7637b6cc |
1 | /* |
2 | * ia32rtools |
2c10ea1f |
3 | * (C) notaz, 2013-2015 |
7637b6cc |
4 | * |
5 | * This work is licensed under the terms of 3-clause BSD license. |
6 | * See COPYING file in the top-level directory. |
7 | */ |
8 | |
33c35af6 |
9 | #define _GNU_SOURCE |
c36e914d |
10 | #include <stdio.h> |
11 | #include <stdlib.h> |
12 | #include <string.h> |
13 | |
14 | #include "my_assert.h" |
15 | #include "my_str.h" |
9ea60b8d |
16 | #include "common.h" |
c36e914d |
17 | |
18 | #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0])) |
19 | #define IS(w, y) !strcmp(w, y) |
39b168b8 |
20 | #define IS_START(w, y) !strncmp(w, y, strlen(y)) |
c36e914d |
21 | |
22 | #include "protoparse.h" |
23 | |
06c5d854 |
24 | static const char *asmfn; |
c36e914d |
25 | static int asmln; |
06c5d854 |
26 | static FILE *g_fhdr; |
c36e914d |
27 | |
940e8e66 |
28 | #define anote(fmt, ...) \ |
29 | printf("%s:%d: note: " fmt, asmfn, asmln, ##__VA_ARGS__) |
c36e914d |
30 | #define awarn(fmt, ...) \ |
940e8e66 |
31 | printf("%s:%d: warning: " fmt, asmfn, asmln, ##__VA_ARGS__) |
c36e914d |
32 | #define aerr(fmt, ...) do { \ |
940e8e66 |
33 | printf("%s:%d: error: " fmt, asmfn, asmln, ##__VA_ARGS__); \ |
33c35af6 |
34 | fcloseall(); \ |
c36e914d |
35 | exit(1); \ |
36 | } while (0) |
37 | |
054f95b2 |
38 | #include "masm_tools.h" |
39 | |
69a3cdfc |
40 | enum op_flags { |
5e49b270 |
41 | OPF_RMD = (1 << 0), /* removed from code generation */ |
87bf6cec |
42 | OPF_DATA = (1 << 1), /* data processing - writes to dst opr */ |
43 | OPF_FLAGS = (1 << 2), /* sets flags */ |
5c024ef7 |
44 | OPF_JMP = (1 << 3), /* branch, call */ |
04abc5d6 |
45 | OPF_CJMP = (1 << 4), /* cond. branch (cc or jecxz/loop) */ |
5c024ef7 |
46 | OPF_CC = (1 << 5), /* uses flags */ |
47 | OPF_TAIL = (1 << 6), /* ret or tail call */ |
48 | OPF_RSAVE = (1 << 7), /* push/pop is local reg save/load */ |
49 | OPF_REP = (1 << 8), /* prefixed by rep */ |
50 | OPF_REPZ = (1 << 9), /* rep is repe/repz */ |
51 | OPF_REPNZ = (1 << 10), /* rep is repne/repnz */ |
9af2d373 |
52 | OPF_FARG = (1 << 11), /* push collected as func arg */ |
53 | OPF_FARGNR = (1 << 12), /* push collected as func arg (no reuse) */ |
54 | OPF_EBP_S = (1 << 13), /* ebp used as scratch here, not BP */ |
55 | OPF_DF = (1 << 14), /* DF flag set */ |
56 | OPF_ATAIL = (1 << 15), /* tail call with reused arg frame */ |
57 | OPF_32BIT = (1 << 16), /* 32bit division */ |
58 | OPF_LOCK = (1 << 17), /* op has lock prefix */ |
59 | OPF_VAPUSH = (1 << 18), /* vararg ptr push (as call arg) */ |
26677139 |
60 | OPF_DONE = (1 << 19), /* already fully handled by analysis */ |
25a330eb |
61 | OPF_PPUSH = (1 << 20), /* part of complex push-pop graph */ |
b2bd20c0 |
62 | OPF_NOREGS = (1 << 21), /* don't track regs of this op */ |
d4a985bd |
63 | OPF_FPUSH = (1 << 22), /* pushes x87 stack */ |
64 | OPF_FPOP = (1 << 23), /* pops x87 stack */ |
65 | OPF_FSHIFT = (1 << 24), /* x87 stack shift is actually needed */ |
c36e914d |
66 | }; |
67 | |
68 | enum op_op { |
69 | OP_INVAL, |
33c35af6 |
70 | OP_NOP, |
c36e914d |
71 | OP_PUSH, |
72 | OP_POP, |
16057ce1 |
73 | OP_PUSHA, |
74 | OP_POPA, |
591721d7 |
75 | OP_LEAVE, |
c36e914d |
76 | OP_MOV, |
850c9265 |
77 | OP_LEA, |
78 | OP_MOVZX, |
79 | OP_MOVSX, |
108e9fe3 |
80 | OP_XCHG, |
850c9265 |
81 | OP_NOT, |
04abc5d6 |
82 | OP_XLAT, |
5101a5f9 |
83 | OP_CDQ, |
622eb2ef |
84 | OP_BSWAP, |
092f64e1 |
85 | OP_LODS, |
33c35af6 |
86 | OP_STOS, |
d4e3b5db |
87 | OP_MOVS, |
7ba45c34 |
88 | OP_CMPS, |
591721d7 |
89 | OP_SCAS, |
90 | OP_STD, |
91 | OP_CLD, |
c36e914d |
92 | OP_RET, |
93 | OP_ADD, |
91977a1c |
94 | OP_SUB, |
850c9265 |
95 | OP_AND, |
96 | OP_OR, |
97 | OP_XOR, |
98 | OP_SHL, |
99 | OP_SHR, |
100 | OP_SAR, |
04abc5d6 |
101 | OP_SHLD, |
3b2f4044 |
102 | OP_SHRD, |
d4e3b5db |
103 | OP_ROL, |
104 | OP_ROR, |
cb090db0 |
105 | OP_RCL, |
106 | OP_RCR, |
69a3cdfc |
107 | OP_ADC, |
850c9265 |
108 | OP_SBB, |
1f84f6b3 |
109 | OP_BSF, |
850c9265 |
110 | OP_INC, |
111 | OP_DEC, |
5101a5f9 |
112 | OP_NEG, |
850c9265 |
113 | OP_MUL, |
114 | OP_IMUL, |
5101a5f9 |
115 | OP_DIV, |
116 | OP_IDIV, |
c36e914d |
117 | OP_TEST, |
118 | OP_CMP, |
119 | OP_CALL, |
120 | OP_JMP, |
5c024ef7 |
121 | OP_JECXZ, |
04abc5d6 |
122 | OP_LOOP, |
092f64e1 |
123 | OP_JCC, |
124 | OP_SCC, |
d4a985bd |
125 | // x87 |
126 | OP_FLD, |
127 | OP_FILD, |
128 | OP_FLDc, |
129 | OP_FST, |
16057ce1 |
130 | OP_FIST, |
d4a985bd |
131 | OP_FADD, |
132 | OP_FDIV, |
133 | OP_FMUL, |
134 | OP_FSUB, |
135 | OP_FDIVR, |
136 | OP_FSUBR, |
137 | OP_FIADD, |
138 | OP_FIDIV, |
139 | OP_FIMUL, |
140 | OP_FISUB, |
141 | OP_FIDIVR, |
142 | OP_FISUBR, |
16057ce1 |
143 | OP_FCOM, |
144 | OP_FNSTSW, |
fe18df39 |
145 | OP_FCHS, |
497a6d6b |
146 | OP_FCOS, |
147 | OP_FPATAN, |
148 | OP_FPTAN, |
149 | OP_FSIN, |
150 | OP_FSQRT, |
fe18df39 |
151 | OP_FXCH, |
152 | OP_FYL2X, |
d4a985bd |
153 | // mmx |
154 | OP_EMMS, |
155 | // pseudo-ops for lib calls |
622eb2ef |
156 | OPP_ALLSHL, |
157 | OPP_ALLSHR, |
d4a985bd |
158 | OPP_FTOL, |
8c83cc48 |
159 | OPP_CIPOW, |
11437ea1 |
160 | OPP_ABORT, |
d4a985bd |
161 | // undefined |
162 | OP_UD2, |
c36e914d |
163 | }; |
164 | |
165 | enum opr_type { |
87bf6cec |
166 | OPT_UNSPEC, |
167 | OPT_REG, |
168 | OPT_REGMEM, |
169 | OPT_LABEL, |
850c9265 |
170 | OPT_OFFSET, |
87bf6cec |
171 | OPT_CONST, |
c36e914d |
172 | }; |
173 | |
2b43685d |
174 | // must be sorted (larger len must be further in enum) |
c36e914d |
175 | enum opr_lenmod { |
91977a1c |
176 | OPLM_UNSPEC, |
177 | OPLM_BYTE, |
178 | OPLM_WORD, |
179 | OPLM_DWORD, |
90307a99 |
180 | OPLM_QWORD, |
c36e914d |
181 | }; |
182 | |
e83ea7ed |
183 | #define MAX_EXITS 128 |
184 | |
850c9265 |
185 | #define MAX_OPERANDS 3 |
92d715b6 |
186 | #define NAMELEN 112 |
c36e914d |
187 | |
b2bd20c0 |
188 | #define OPR_INIT(type_, lmod_, reg_) \ |
189 | { type_, lmod_, reg_, } |
190 | |
c36e914d |
191 | struct parsed_opr { |
91977a1c |
192 | enum opr_type type; |
193 | enum opr_lenmod lmod; |
b2bd20c0 |
194 | int reg; |
7ba45c34 |
195 | unsigned int is_ptr:1; // pointer in C |
196 | unsigned int is_array:1; // array in C |
a3684be1 |
197 | unsigned int type_from_var:1; // .. in header, sometimes wrong |
2b43685d |
198 | unsigned int size_mismatch:1; // type override differs from C |
199 | unsigned int size_lt:1; // type override is larger than C |
ddaf8bd7 |
200 | unsigned int had_ds:1; // had ds: prefix |
c7ed83dd |
201 | const struct parsed_proto *pp; // for OPT_LABEL |
91977a1c |
202 | unsigned int val; |
92d715b6 |
203 | char name[NAMELEN]; |
c36e914d |
204 | }; |
205 | |
206 | struct parsed_op { |
91977a1c |
207 | enum op_op op; |
208 | struct parsed_opr operand[MAX_OPERANDS]; |
69a3cdfc |
209 | unsigned int flags; |
092f64e1 |
210 | unsigned char pfo; |
211 | unsigned char pfo_inv; |
212 | unsigned char operand_cnt; |
3a5101d7 |
213 | unsigned char p_argnum; // arg push: altered before call arg # |
214 | unsigned char p_arggrp; // arg push: arg group # for above |
215 | unsigned char p_argpass;// arg push: arg of host func |
216 | short p_argnext;// arg push: same arg pushed elsewhere or -1 |
69a3cdfc |
217 | int regmask_src; // all referensed regs |
218 | int regmask_dst; |
940e8e66 |
219 | int pfomask; // flagop: parsed_flag_op that can't be delayed |
940e8e66 |
220 | int cc_scratch; // scratch storage during analysis |
4c45fa73 |
221 | int bt_i; // branch target for branches |
222 | struct parsed_data *btj;// branch targets for jumptables |
c7ed83dd |
223 | struct parsed_proto *pp;// parsed_proto for OP_CALL |
91977a1c |
224 | void *datap; |
8eb12e72 |
225 | int asmln; |
91977a1c |
226 | }; |
227 | |
69a3cdfc |
228 | // datap: |
865f1aca |
229 | // on start: function/data type hint (sctproto) |
230 | // after analysis: |
2c10ea1f |
231 | // (OPF_CC) - points to one of (OPF_FLAGS) that affects cc op |
25a330eb |
232 | // OP_PUSH - points to OP_POP in complex push/pop graph |
233 | // OP_POP - points to OP_PUSH in simple push/pop pair |
16057ce1 |
234 | // OP_FCOM - needed_status_word_bits | (is_z_check << 16) |
69a3cdfc |
235 | |
91977a1c |
236 | struct parsed_equ { |
237 | char name[64]; |
238 | enum opr_lenmod lmod; |
239 | int offset; |
c36e914d |
240 | }; |
241 | |
4c45fa73 |
242 | struct parsed_data { |
243 | char label[256]; |
244 | enum opr_type type; |
245 | enum opr_lenmod lmod; |
246 | int count; |
247 | int count_alloc; |
248 | struct { |
249 | union { |
250 | char *label; |
63df67be |
251 | unsigned int val; |
4c45fa73 |
252 | } u; |
253 | int bt_i; |
254 | } *d; |
255 | }; |
256 | |
257 | struct label_ref { |
258 | int i; |
259 | struct label_ref *next; |
260 | }; |
261 | |
1bafb621 |
262 | enum ida_func_attr { |
263 | IDAFA_BP_FRAME = (1 << 0), |
264 | IDAFA_LIB_FUNC = (1 << 1), |
265 | IDAFA_STATIC = (1 << 2), |
266 | IDAFA_NORETURN = (1 << 3), |
267 | IDAFA_THUNK = (1 << 4), |
268 | IDAFA_FPD = (1 << 5), |
269 | }; |
270 | |
7e08c224 |
271 | enum sct_func_attr { |
226e8df1 |
272 | SCTFA_CLEAR_SF = (1 << 0), // clear stack frame |
273 | SCTFA_CLEAR_REGS = (1 << 1), // clear registers (mask) |
7e08c224 |
274 | }; |
275 | |
d4a985bd |
276 | enum x87_const { |
277 | X87_CONST_1 = 1, |
278 | X87_CONST_2T, |
279 | X87_CONST_2E, |
280 | X87_CONST_PI, |
281 | X87_CONST_LG2, |
282 | X87_CONST_LN2, |
283 | X87_CONST_Z, |
284 | }; |
285 | |
3a5101d7 |
286 | // note: limited to 32k due to p_argnext |
287 | #define MAX_OPS 4096 |
288 | #define MAX_ARG_GRP 2 |
c36e914d |
289 | |
290 | static struct parsed_op ops[MAX_OPS]; |
91977a1c |
291 | static struct parsed_equ *g_eqs; |
292 | static int g_eqcnt; |
d7857c3a |
293 | static char *g_labels[MAX_OPS]; |
4c45fa73 |
294 | static struct label_ref g_label_refs[MAX_OPS]; |
bd96f656 |
295 | static const struct parsed_proto *g_func_pp; |
4c45fa73 |
296 | static struct parsed_data *g_func_pd; |
297 | static int g_func_pd_cnt; |
d4a985bd |
298 | static int g_func_lmods; |
91977a1c |
299 | static char g_func[256]; |
300 | static char g_comment[256]; |
301 | static int g_bp_frame; |
1bafb621 |
302 | static int g_sp_frame; |
a2c1d768 |
303 | static int g_stack_frame_used; |
1bafb621 |
304 | static int g_stack_fsz; |
4c45fa73 |
305 | static int g_ida_func_attr; |
7e08c224 |
306 | static int g_sct_func_attr; |
307 | static int g_stack_clear_start; // in dwords |
308 | static int g_stack_clear_len; |
226e8df1 |
309 | static int g_regmask_init; |
30c8c549 |
310 | static int g_skip_func; |
89ff3147 |
311 | static int g_allow_regfunc; |
8c83cc48 |
312 | static int g_allow_user_icall; |
92d715b6 |
313 | static int g_quiet_pp; |
9af2d373 |
314 | static int g_header_mode; |
92d715b6 |
315 | |
91977a1c |
316 | #define ferr(op_, fmt, ...) do { \ |
bfacdc83 |
317 | printf("%s:%d: error %u: [%s] '%s': " fmt, asmfn, (op_)->asmln, \ |
318 | __LINE__, g_func, dump_op(op_), ##__VA_ARGS__); \ |
33c35af6 |
319 | fcloseall(); \ |
91977a1c |
320 | exit(1); \ |
321 | } while (0) |
de50b98b |
322 | #define fnote(op_, fmt, ...) \ |
8eb12e72 |
323 | printf("%s:%d: note: [%s] '%s': " fmt, asmfn, (op_)->asmln, g_func, \ |
de50b98b |
324 | dump_op(op_), ##__VA_ARGS__) |
91977a1c |
325 | |
26677139 |
326 | #define ferr_assert(op_, cond) do { \ |
2b70f6d3 |
327 | if (!(cond)) ferr(op_, "assertion '%s' failed\n", #cond); \ |
26677139 |
328 | } while (0) |
329 | |
90307a99 |
330 | const char *regs_r32[] = { |
331 | "eax", "ebx", "ecx", "edx", "esi", "edi", "ebp", "esp", |
332 | // not r32, but list here for easy parsing and printing |
333 | "mm0", "mm1", "mm2", "mm3", "mm4", "mm5", "mm6", "mm7", |
d4a985bd |
334 | "st", "st(1)", "st(2)", "st(3)", "st(4)", "st(5)", "st(6)", "st(7)" |
90307a99 |
335 | }; |
91977a1c |
336 | const char *regs_r16[] = { "ax", "bx", "cx", "dx", "si", "di", "bp", "sp" }; |
337 | const char *regs_r8l[] = { "al", "bl", "cl", "dl" }; |
338 | const char *regs_r8h[] = { "ah", "bh", "ch", "dh" }; |
339 | |
d4a985bd |
340 | enum x86_regs { |
341 | xUNSPEC = -1, |
342 | xAX, xBX, xCX, xDX, |
343 | xSI, xDI, xBP, xSP, |
344 | xMM0, xMM1, xMM2, xMM3, // mmx |
345 | xMM4, xMM5, xMM6, xMM7, |
346 | xST0, xST1, xST2, xST3, // x87 |
347 | xST4, xST5, xST6, xST7, |
348 | }; |
349 | |
350 | #define mxAX (1 << xAX) |
226e8df1 |
351 | #define mxCX (1 << xCX) |
d4a985bd |
352 | #define mxDX (1 << xDX) |
353 | #define mxST0 (1 << xST0) |
354 | #define mxST1 (1 << xST1) |
fe18df39 |
355 | #define mxST1_0 (mxST1 | mxST0) |
356 | #define mxST7_2 (0xfc << xST0) |
357 | #define mxSTa (0xff << xST0) |
91977a1c |
358 | |
69a3cdfc |
359 | // possible basic comparison types (without inversion) |
360 | enum parsed_flag_op { |
361 | PFO_O, // 0 OF=1 |
362 | PFO_C, // 2 CF=1 |
363 | PFO_Z, // 4 ZF=1 |
364 | PFO_BE, // 6 CF=1||ZF=1 |
365 | PFO_S, // 8 SF=1 |
366 | PFO_P, // a PF=1 |
367 | PFO_L, // c SF!=OF |
368 | PFO_LE, // e ZF=1||SF!=OF |
369 | }; |
370 | |
90307a99 |
371 | #define PFOB_O (1 << PFO_O) |
372 | #define PFOB_C (1 << PFO_C) |
373 | #define PFOB_Z (1 << PFO_Z) |
374 | #define PFOB_S (1 << PFO_S) |
375 | |
69a3cdfc |
376 | static const char *parsed_flag_op_names[] = { |
377 | "o", "c", "z", "be", "s", "p", "l", "le" |
378 | }; |
379 | |
91977a1c |
380 | static int char_array_i(const char *array[], size_t len, const char *s) |
381 | { |
382 | int i; |
c36e914d |
383 | |
91977a1c |
384 | for (i = 0; i < len; i++) |
385 | if (IS(s, array[i])) |
386 | return i; |
c36e914d |
387 | |
91977a1c |
388 | return -1; |
389 | } |
390 | |
63df67be |
391 | static void printf_number(char *buf, size_t buf_size, |
392 | unsigned long number) |
91977a1c |
393 | { |
5101a5f9 |
394 | // output in C-friendly form |
395 | snprintf(buf, buf_size, number < 10 ? "%lu" : "0x%02lx", number); |
396 | } |
91977a1c |
397 | |
fdd5548a |
398 | static int check_segment_prefix(const char *s) |
399 | { |
400 | if (s[0] == 0 || s[1] != 's' || s[2] != ':') |
401 | return 0; |
402 | |
403 | switch (s[0]) { |
404 | case 'c': return 1; |
405 | case 'd': return 2; |
406 | case 's': return 3; |
407 | case 'e': return 4; |
408 | case 'f': return 5; |
409 | case 'g': return 6; |
410 | default: return 0; |
411 | } |
412 | } |
413 | |
5101a5f9 |
414 | static int parse_reg(enum opr_lenmod *reg_lmod, const char *s) |
415 | { |
416 | int reg; |
91977a1c |
417 | |
5101a5f9 |
418 | reg = char_array_i(regs_r32, ARRAY_SIZE(regs_r32), s); |
90307a99 |
419 | if (reg >= 8) { |
420 | *reg_lmod = OPLM_QWORD; |
421 | return reg; |
422 | } |
5101a5f9 |
423 | if (reg >= 0) { |
424 | *reg_lmod = OPLM_DWORD; |
425 | return reg; |
91977a1c |
426 | } |
5101a5f9 |
427 | reg = char_array_i(regs_r16, ARRAY_SIZE(regs_r16), s); |
428 | if (reg >= 0) { |
429 | *reg_lmod = OPLM_WORD; |
430 | return reg; |
431 | } |
432 | reg = char_array_i(regs_r8h, ARRAY_SIZE(regs_r8h), s); |
433 | if (reg >= 0) { |
434 | *reg_lmod = OPLM_BYTE; |
435 | return reg; |
436 | } |
437 | reg = char_array_i(regs_r8l, ARRAY_SIZE(regs_r8l), s); |
438 | if (reg >= 0) { |
439 | *reg_lmod = OPLM_BYTE; |
440 | return reg; |
850c9265 |
441 | } |
442 | |
443 | return -1; |
91977a1c |
444 | } |
445 | |
5101a5f9 |
446 | static int parse_indmode(char *name, int *regmask, int need_c_cvt) |
447 | { |
448 | enum opr_lenmod lmod; |
449 | char cvtbuf[256]; |
450 | char *d = cvtbuf; |
451 | char *s = name; |
452 | char w[64]; |
453 | long number; |
454 | int reg; |
455 | int c = 0; |
456 | |
457 | *d = 0; |
458 | |
459 | while (*s != 0) { |
460 | d += strlen(d); |
461 | while (my_isblank(*s)) |
462 | s++; |
463 | for (; my_issep(*s); d++, s++) |
464 | *d = *s; |
465 | while (my_isblank(*s)) |
466 | s++; |
467 | *d = 0; |
468 | |
fdd5548a |
469 | // skip '?s:' prefixes |
470 | if (check_segment_prefix(s)) |
87bf6cec |
471 | s += 3; |
472 | |
5101a5f9 |
473 | s = next_idt(w, sizeof(w), s); |
474 | if (w[0] == 0) |
475 | break; |
476 | c++; |
477 | |
478 | reg = parse_reg(&lmod, w); |
479 | if (reg >= 0) { |
480 | *regmask |= 1 << reg; |
481 | goto pass; |
482 | } |
483 | |
484 | if ('0' <= w[0] && w[0] <= '9') { |
485 | number = parse_number(w); |
486 | printf_number(d, sizeof(cvtbuf) - (d - cvtbuf), number); |
487 | continue; |
488 | } |
489 | |
490 | // probably some label/identifier - pass |
491 | |
492 | pass: |
493 | snprintf(d, sizeof(cvtbuf) - (d - cvtbuf), "%s", w); |
494 | } |
495 | |
496 | if (need_c_cvt) |
497 | strcpy(name, cvtbuf); |
498 | |
499 | return c; |
500 | } |
501 | |
4c45fa73 |
502 | static int is_reg_in_str(const char *s) |
503 | { |
504 | int i; |
505 | |
506 | if (strlen(s) < 3 || (s[3] && !my_issep(s[3]) && !my_isblank(s[3]))) |
507 | return 0; |
508 | |
509 | for (i = 0; i < ARRAY_SIZE(regs_r32); i++) |
510 | if (!strncmp(s, regs_r32[i], 3)) |
511 | return 1; |
512 | |
513 | return 0; |
514 | } |
515 | |
09bc6fd5 |
516 | static const char *parse_stack_el(const char *name, char *extra_reg, |
30620174 |
517 | int *base_val, int early_try) |
d4e3b5db |
518 | { |
4c45fa73 |
519 | const char *p, *p2, *s; |
1bafb621 |
520 | char *endp = NULL; |
d4e3b5db |
521 | char buf[32]; |
30620174 |
522 | long val = -1; |
d4e3b5db |
523 | int len; |
524 | |
09bc6fd5 |
525 | if (g_bp_frame || early_try) |
526 | { |
527 | p = name; |
528 | if (IS_START(p + 3, "+ebp+") && is_reg_in_str(p)) { |
529 | p += 4; |
530 | if (extra_reg != NULL) { |
531 | strncpy(extra_reg, name, 3); |
532 | extra_reg[4] = 0; |
533 | } |
4c45fa73 |
534 | } |
4c45fa73 |
535 | |
09bc6fd5 |
536 | if (IS_START(p, "ebp+")) { |
537 | p += 4; |
4c45fa73 |
538 | |
09bc6fd5 |
539 | p2 = strchr(p, '+'); |
540 | if (p2 != NULL && is_reg_in_str(p)) { |
541 | if (extra_reg != NULL) { |
542 | strncpy(extra_reg, p, p2 - p); |
543 | extra_reg[p2 - p] = 0; |
544 | } |
545 | p = p2 + 1; |
4c45fa73 |
546 | } |
4c45fa73 |
547 | |
09bc6fd5 |
548 | if (!('0' <= *p && *p <= '9')) |
549 | return p; |
4c45fa73 |
550 | |
09bc6fd5 |
551 | return NULL; |
552 | } |
4c45fa73 |
553 | } |
554 | |
39b168b8 |
555 | if (!IS_START(name, "esp+")) |
d4e3b5db |
556 | return NULL; |
557 | |
037f4971 |
558 | s = name + 4; |
559 | p = strchr(s, '+'); |
d4e3b5db |
560 | if (p) { |
037f4971 |
561 | if (is_reg_in_str(s)) { |
562 | if (extra_reg != NULL) { |
563 | strncpy(extra_reg, s, p - s); |
564 | extra_reg[p - s] = 0; |
565 | } |
566 | s = p + 1; |
567 | p = strchr(s, '+'); |
568 | if (p == NULL) |
569 | aerr("%s IDA stackvar not set?\n", __func__); |
570 | } |
1bafb621 |
571 | if (!('0' <= *s && *s <= '9')) { |
037f4971 |
572 | aerr("%s IDA stackvar offset not set?\n", __func__); |
d4e3b5db |
573 | return NULL; |
1bafb621 |
574 | } |
575 | if (s[0] == '0' && s[1] == 'x') |
576 | s += 2; |
577 | len = p - s; |
d4e3b5db |
578 | if (len < sizeof(buf) - 1) { |
1bafb621 |
579 | strncpy(buf, s, len); |
d4e3b5db |
580 | buf[len] = 0; |
1bafb621 |
581 | val = strtol(buf, &endp, 16); |
582 | if (val == 0 || *endp != 0) { |
583 | aerr("%s num parse fail for '%s'\n", __func__, buf); |
584 | return NULL; |
585 | } |
d4e3b5db |
586 | } |
587 | p++; |
588 | } |
589 | else |
590 | p = name + 4; |
591 | |
592 | if ('0' <= *p && *p <= '9') |
593 | return NULL; |
594 | |
30620174 |
595 | if (base_val != NULL) |
596 | *base_val = val; |
d4e3b5db |
597 | return p; |
598 | } |
599 | |
850c9265 |
600 | static int guess_lmod_from_name(struct parsed_opr *opr) |
601 | { |
04abc5d6 |
602 | if (IS_START(opr->name, "dword_") || IS_START(opr->name, "off_")) { |
850c9265 |
603 | opr->lmod = OPLM_DWORD; |
604 | return 1; |
605 | } |
04abc5d6 |
606 | if (IS_START(opr->name, "word_")) { |
850c9265 |
607 | opr->lmod = OPLM_WORD; |
608 | return 1; |
609 | } |
04abc5d6 |
610 | if (IS_START(opr->name, "byte_")) { |
850c9265 |
611 | opr->lmod = OPLM_BYTE; |
612 | return 1; |
613 | } |
04abc5d6 |
614 | if (IS_START(opr->name, "qword_")) { |
90307a99 |
615 | opr->lmod = OPLM_QWORD; |
616 | return 1; |
617 | } |
850c9265 |
618 | return 0; |
619 | } |
620 | |
3ebea2cf |
621 | static int guess_lmod_from_c_type(enum opr_lenmod *lmod, |
622 | const struct parsed_type *c_type) |
06c5d854 |
623 | { |
11437ea1 |
624 | static const char *qword_types[] = { |
625 | "uint64_t", "int64_t", "__int64", |
626 | }; |
06c5d854 |
627 | static const char *dword_types[] = { |
c0de9015 |
628 | "uint32_t", "int", "_DWORD", "UINT_PTR", "DWORD", |
4741fdfe |
629 | "WPARAM", "LPARAM", "UINT", "__int32", |
09bc6fd5 |
630 | "LONG", "HIMC", "BOOL", "size_t", |
feb0ee5d |
631 | "float", |
06c5d854 |
632 | }; |
633 | static const char *word_types[] = { |
fe18709a |
634 | "uint16_t", "int16_t", "_WORD", "WORD", |
2b43685d |
635 | "unsigned __int16", "__int16", |
06c5d854 |
636 | }; |
637 | static const char *byte_types[] = { |
2b43685d |
638 | "uint8_t", "int8_t", "char", |
89ff3147 |
639 | "unsigned __int8", "__int8", "BYTE", "_BYTE", |
4741fdfe |
640 | "CHAR", "_UNKNOWN", |
b4878d2b |
641 | // structures.. deal the same as with _UNKNOWN for now |
642 | "CRITICAL_SECTION", |
06c5d854 |
643 | }; |
3ebea2cf |
644 | const char *n; |
06c5d854 |
645 | int i; |
646 | |
3ebea2cf |
647 | if (c_type->is_ptr) { |
648 | *lmod = OPLM_DWORD; |
06c5d854 |
649 | return 1; |
650 | } |
651 | |
3ebea2cf |
652 | n = skip_type_mod(c_type->name); |
06c5d854 |
653 | |
3ebea2cf |
654 | for (i = 0; i < ARRAY_SIZE(dword_types); i++) { |
655 | if (IS(n, dword_types[i])) { |
656 | *lmod = OPLM_DWORD; |
06c5d854 |
657 | return 1; |
658 | } |
659 | } |
660 | |
661 | for (i = 0; i < ARRAY_SIZE(word_types); i++) { |
3ebea2cf |
662 | if (IS(n, word_types[i])) { |
663 | *lmod = OPLM_WORD; |
06c5d854 |
664 | return 1; |
665 | } |
666 | } |
667 | |
668 | for (i = 0; i < ARRAY_SIZE(byte_types); i++) { |
3ebea2cf |
669 | if (IS(n, byte_types[i])) { |
670 | *lmod = OPLM_BYTE; |
06c5d854 |
671 | return 1; |
672 | } |
673 | } |
674 | |
11437ea1 |
675 | for (i = 0; i < ARRAY_SIZE(qword_types); i++) { |
676 | if (IS(n, qword_types[i])) { |
677 | *lmod = OPLM_QWORD; |
678 | return 1; |
679 | } |
680 | } |
681 | |
06c5d854 |
682 | return 0; |
683 | } |
684 | |
c7ed83dd |
685 | static char *default_cast_to(char *buf, size_t buf_size, |
686 | struct parsed_opr *opr) |
687 | { |
688 | buf[0] = 0; |
689 | |
865f1aca |
690 | if (!opr->is_ptr || strchr(opr->name, '[')) |
c7ed83dd |
691 | return buf; |
692 | if (opr->pp == NULL || opr->pp->type.name == NULL |
693 | || opr->pp->is_fptr) |
694 | { |
695 | snprintf(buf, buf_size, "%s", "(void *)"); |
696 | return buf; |
697 | } |
698 | |
699 | snprintf(buf, buf_size, "(%s)", opr->pp->type.name); |
700 | return buf; |
701 | } |
702 | |
4c45fa73 |
703 | static enum opr_type lmod_from_directive(const char *d) |
704 | { |
705 | if (IS(d, "dd")) |
706 | return OPLM_DWORD; |
707 | else if (IS(d, "dw")) |
708 | return OPLM_WORD; |
709 | else if (IS(d, "db")) |
710 | return OPLM_BYTE; |
711 | |
712 | aerr("unhandled directive: '%s'\n", d); |
713 | return OPLM_UNSPEC; |
714 | } |
715 | |
5101a5f9 |
716 | static void setup_reg_opr(struct parsed_opr *opr, int reg, enum opr_lenmod lmod, |
717 | int *regmask) |
718 | { |
719 | opr->type = OPT_REG; |
720 | opr->reg = reg; |
721 | opr->lmod = lmod; |
722 | *regmask |= 1 << reg; |
723 | } |
724 | |
39b168b8 |
725 | static struct parsed_equ *equ_find(struct parsed_op *po, const char *name, |
726 | int *extra_offs); |
87bf6cec |
727 | |
69a3cdfc |
728 | static int parse_operand(struct parsed_opr *opr, |
729 | int *regmask, int *regmask_indirect, |
1bafb621 |
730 | char words[16][256], int wordc, int w, unsigned int op_flags) |
c36e914d |
731 | { |
92d715b6 |
732 | const struct parsed_proto *pp = NULL; |
850c9265 |
733 | enum opr_lenmod tmplmod; |
63df67be |
734 | unsigned long number; |
89ff3147 |
735 | char buf[256]; |
850c9265 |
736 | int ret, len; |
1bafb621 |
737 | int wordc_in; |
89ff3147 |
738 | char *p; |
850c9265 |
739 | int i; |
c36e914d |
740 | |
1bafb621 |
741 | if (w >= wordc) |
742 | aerr("parse_operand w %d, wordc %d\n", w, wordc); |
c36e914d |
743 | |
1bafb621 |
744 | opr->reg = xUNSPEC; |
91977a1c |
745 | |
1bafb621 |
746 | for (i = w; i < wordc; i++) { |
747 | len = strlen(words[i]); |
748 | if (words[i][len - 1] == ',') { |
749 | words[i][len - 1] = 0; |
750 | wordc = i + 1; |
751 | break; |
752 | } |
753 | } |
c36e914d |
754 | |
1bafb621 |
755 | wordc_in = wordc - w; |
c36e914d |
756 | |
1bafb621 |
757 | if ((op_flags & OPF_JMP) && wordc_in > 0 |
758 | && !('0' <= words[w][0] && words[w][0] <= '9')) |
759 | { |
760 | const char *label = NULL; |
761 | |
762 | if (wordc_in == 3 && !strncmp(words[w], "near", 4) |
763 | && IS(words[w + 1], "ptr")) |
764 | label = words[w + 2]; |
765 | else if (wordc_in == 2 && IS(words[w], "short")) |
766 | label = words[w + 1]; |
767 | else if (wordc_in == 1 |
768 | && strchr(words[w], '[') == NULL |
769 | && parse_reg(&tmplmod, words[w]) < 0) |
770 | label = words[w]; |
771 | |
772 | if (label != NULL) { |
773 | opr->type = OPT_LABEL; |
fdd5548a |
774 | ret = check_segment_prefix(label); |
775 | if (ret != 0) { |
776 | if (ret >= 5) |
777 | aerr("fs/gs used\n"); |
ddaf8bd7 |
778 | opr->had_ds = 1; |
39b168b8 |
779 | label += 3; |
ddaf8bd7 |
780 | } |
1bafb621 |
781 | strcpy(opr->name, label); |
782 | return wordc; |
783 | } |
784 | } |
c36e914d |
785 | |
1bafb621 |
786 | if (wordc_in >= 3) { |
787 | if (IS(words[w + 1], "ptr")) { |
788 | if (IS(words[w], "dword")) |
789 | opr->lmod = OPLM_DWORD; |
790 | else if (IS(words[w], "word")) |
791 | opr->lmod = OPLM_WORD; |
792 | else if (IS(words[w], "byte")) |
793 | opr->lmod = OPLM_BYTE; |
90307a99 |
794 | else if (IS(words[w], "qword")) |
795 | opr->lmod = OPLM_QWORD; |
1bafb621 |
796 | else |
797 | aerr("type parsing failed\n"); |
798 | w += 2; |
799 | wordc_in = wordc - w; |
800 | } |
801 | } |
802 | |
39b168b8 |
803 | if (wordc_in == 2) { |
804 | if (IS(words[w], "offset")) { |
805 | opr->type = OPT_OFFSET; |
27ebfaed |
806 | opr->lmod = OPLM_DWORD; |
39b168b8 |
807 | strcpy(opr->name, words[w + 1]); |
27ebfaed |
808 | pp = proto_parse(g_fhdr, opr->name, 1); |
809 | goto do_label; |
39b168b8 |
810 | } |
811 | if (IS(words[w], "(offset")) { |
89ff3147 |
812 | p = strchr(words[w + 1], ')'); |
39b168b8 |
813 | if (p == NULL) |
814 | aerr("parse of bracketed offset failed\n"); |
815 | *p = 0; |
816 | opr->type = OPT_OFFSET; |
817 | strcpy(opr->name, words[w + 1]); |
818 | return wordc; |
819 | } |
1bafb621 |
820 | } |
c36e914d |
821 | |
1bafb621 |
822 | if (wordc_in != 1) |
850c9265 |
823 | aerr("parse_operand 1 word expected\n"); |
c36e914d |
824 | |
fdd5548a |
825 | ret = check_segment_prefix(words[w]); |
826 | if (ret != 0) { |
827 | if (ret >= 5) |
828 | aerr("fs/gs used\n"); |
ddaf8bd7 |
829 | opr->had_ds = 1; |
89ff3147 |
830 | memmove(words[w], words[w] + 3, strlen(words[w]) - 2); |
ddaf8bd7 |
831 | } |
89ff3147 |
832 | strcpy(opr->name, words[w]); |
c36e914d |
833 | |
850c9265 |
834 | if (words[w][0] == '[') { |
835 | opr->type = OPT_REGMEM; |
836 | ret = sscanf(words[w], "[%[^]]]", opr->name); |
837 | if (ret != 1) |
838 | aerr("[] parse failure\n"); |
87bf6cec |
839 | |
5101a5f9 |
840 | parse_indmode(opr->name, regmask_indirect, 1); |
30620174 |
841 | if (opr->lmod == OPLM_UNSPEC |
842 | && parse_stack_el(opr->name, NULL, NULL, 1)) |
09bc6fd5 |
843 | { |
87bf6cec |
844 | // might be an equ |
d4e3b5db |
845 | struct parsed_equ *eq = |
30620174 |
846 | equ_find(NULL, parse_stack_el(opr->name, NULL, NULL, 1), &i); |
87bf6cec |
847 | if (eq) |
848 | opr->lmod = eq->lmod; |
d4a985bd |
849 | |
850 | // might be unaligned access |
851 | g_func_lmods |= 1 << OPLM_BYTE; |
87bf6cec |
852 | } |
850c9265 |
853 | return wordc; |
854 | } |
855 | else if (strchr(words[w], '[')) { |
856 | // label[reg] form |
89ff3147 |
857 | p = strchr(words[w], '['); |
850c9265 |
858 | opr->type = OPT_REGMEM; |
89ff3147 |
859 | parse_indmode(p, regmask_indirect, 0); |
860 | strncpy(buf, words[w], p - words[w]); |
861 | buf[p - words[w]] = 0; |
862 | pp = proto_parse(g_fhdr, buf, 1); |
863 | goto do_label; |
850c9265 |
864 | } |
865 | else if (('0' <= words[w][0] && words[w][0] <= '9') |
866 | || words[w][0] == '-') |
867 | { |
5101a5f9 |
868 | number = parse_number(words[w]); |
91977a1c |
869 | opr->type = OPT_CONST; |
5101a5f9 |
870 | opr->val = number; |
871 | printf_number(opr->name, sizeof(opr->name), number); |
91977a1c |
872 | return wordc; |
850c9265 |
873 | } |
c36e914d |
874 | |
5101a5f9 |
875 | ret = parse_reg(&tmplmod, opr->name); |
876 | if (ret >= 0) { |
877 | setup_reg_opr(opr, ret, tmplmod, regmask); |
850c9265 |
878 | return wordc; |
879 | } |
880 | |
881 | // most likely var in data segment |
882 | opr->type = OPT_LABEL; |
92d715b6 |
883 | pp = proto_parse(g_fhdr, opr->name, g_quiet_pp); |
89ff3147 |
884 | |
885 | do_label: |
bd96f656 |
886 | if (pp != NULL) { |
1cd4a663 |
887 | if (pp->is_fptr || pp->is_func) { |
06c5d854 |
888 | opr->lmod = OPLM_DWORD; |
889 | opr->is_ptr = 1; |
890 | } |
2b43685d |
891 | else { |
840257f6 |
892 | tmplmod = OPLM_UNSPEC; |
bd96f656 |
893 | if (!guess_lmod_from_c_type(&tmplmod, &pp->type)) |
2b43685d |
894 | anote("unhandled C type '%s' for '%s'\n", |
bd96f656 |
895 | pp->type.name, opr->name); |
2b43685d |
896 | |
a3684be1 |
897 | if (opr->lmod == OPLM_UNSPEC) { |
2b43685d |
898 | opr->lmod = tmplmod; |
a3684be1 |
899 | opr->type_from_var = 1; |
900 | } |
2b43685d |
901 | else if (opr->lmod != tmplmod) { |
902 | opr->size_mismatch = 1; |
903 | if (tmplmod < opr->lmod) |
904 | opr->size_lt = 1; |
905 | } |
a652aa9f |
906 | opr->is_ptr = pp->type.is_ptr; |
3ebea2cf |
907 | } |
bd96f656 |
908 | opr->is_array = pp->type.is_array; |
06c5d854 |
909 | } |
c7ed83dd |
910 | opr->pp = pp; |
06c5d854 |
911 | |
850c9265 |
912 | if (opr->lmod == OPLM_UNSPEC) |
913 | guess_lmod_from_name(opr); |
850c9265 |
914 | return wordc; |
c36e914d |
915 | } |
916 | |
33c35af6 |
917 | static const struct { |
918 | const char *name; |
919 | unsigned int flags; |
920 | } pref_table[] = { |
921 | { "rep", OPF_REP }, |
7ba45c34 |
922 | { "repe", OPF_REP|OPF_REPZ }, |
923 | { "repz", OPF_REP|OPF_REPZ }, |
924 | { "repne", OPF_REP|OPF_REPNZ }, |
925 | { "repnz", OPF_REP|OPF_REPNZ }, |
037f4971 |
926 | { "lock", OPF_LOCK }, // ignored for now.. |
33c35af6 |
927 | }; |
928 | |
5c024ef7 |
929 | #define OPF_CJMP_CC (OPF_JMP|OPF_CJMP|OPF_CC) |
930 | |
c36e914d |
931 | static const struct { |
850c9265 |
932 | const char *name; |
933 | enum op_op op; |
092f64e1 |
934 | unsigned short minopr; |
935 | unsigned short maxopr; |
69a3cdfc |
936 | unsigned int flags; |
092f64e1 |
937 | unsigned char pfo; |
938 | unsigned char pfo_inv; |
c36e914d |
939 | } op_table[] = { |
33c35af6 |
940 | { "nop", OP_NOP, 0, 0, 0 }, |
69a3cdfc |
941 | { "push", OP_PUSH, 1, 1, 0 }, |
942 | { "pop", OP_POP, 1, 1, OPF_DATA }, |
16057ce1 |
943 | { "pusha",OP_PUSHA, 0, 0, 0 }, |
944 | { "popa", OP_POPA, 0, 0, OPF_DATA }, |
591721d7 |
945 | { "leave",OP_LEAVE, 0, 0, OPF_DATA }, |
69a3cdfc |
946 | { "mov" , OP_MOV, 2, 2, OPF_DATA }, |
947 | { "lea", OP_LEA, 2, 2, OPF_DATA }, |
948 | { "movzx",OP_MOVZX, 2, 2, OPF_DATA }, |
949 | { "movsx",OP_MOVSX, 2, 2, OPF_DATA }, |
108e9fe3 |
950 | { "xchg", OP_XCHG, 2, 2, OPF_DATA }, |
69a3cdfc |
951 | { "not", OP_NOT, 1, 1, OPF_DATA }, |
04abc5d6 |
952 | { "xlat", OP_XLAT, 0, 0, OPF_DATA }, |
5101a5f9 |
953 | { "cdq", OP_CDQ, 0, 0, OPF_DATA }, |
622eb2ef |
954 | { "bswap",OP_BSWAP, 1, 1, OPF_DATA }, |
092f64e1 |
955 | { "lodsb",OP_LODS, 0, 0, OPF_DATA }, |
956 | { "lodsw",OP_LODS, 0, 0, OPF_DATA }, |
957 | { "lodsd",OP_LODS, 0, 0, OPF_DATA }, |
33c35af6 |
958 | { "stosb",OP_STOS, 0, 0, OPF_DATA }, |
959 | { "stosw",OP_STOS, 0, 0, OPF_DATA }, |
960 | { "stosd",OP_STOS, 0, 0, OPF_DATA }, |
d4e3b5db |
961 | { "movsb",OP_MOVS, 0, 0, OPF_DATA }, |
962 | { "movsw",OP_MOVS, 0, 0, OPF_DATA }, |
963 | { "movsd",OP_MOVS, 0, 0, OPF_DATA }, |
7ba45c34 |
964 | { "cmpsb",OP_CMPS, 0, 0, OPF_DATA|OPF_FLAGS }, |
965 | { "cmpsw",OP_CMPS, 0, 0, OPF_DATA|OPF_FLAGS }, |
966 | { "cmpsd",OP_CMPS, 0, 0, OPF_DATA|OPF_FLAGS }, |
591721d7 |
967 | { "scasb",OP_SCAS, 0, 0, OPF_DATA|OPF_FLAGS }, |
968 | { "scasw",OP_SCAS, 0, 0, OPF_DATA|OPF_FLAGS }, |
969 | { "scasd",OP_SCAS, 0, 0, OPF_DATA|OPF_FLAGS }, |
970 | { "std", OP_STD, 0, 0, OPF_DATA }, // special flag |
971 | { "cld", OP_CLD, 0, 0, OPF_DATA }, |
69a3cdfc |
972 | { "add", OP_ADD, 2, 2, OPF_DATA|OPF_FLAGS }, |
973 | { "sub", OP_SUB, 2, 2, OPF_DATA|OPF_FLAGS }, |
974 | { "and", OP_AND, 2, 2, OPF_DATA|OPF_FLAGS }, |
975 | { "or", OP_OR, 2, 2, OPF_DATA|OPF_FLAGS }, |
976 | { "xor", OP_XOR, 2, 2, OPF_DATA|OPF_FLAGS }, |
977 | { "shl", OP_SHL, 2, 2, OPF_DATA|OPF_FLAGS }, |
978 | { "shr", OP_SHR, 2, 2, OPF_DATA|OPF_FLAGS }, |
979 | { "sal", OP_SHL, 2, 2, OPF_DATA|OPF_FLAGS }, |
980 | { "sar", OP_SAR, 2, 2, OPF_DATA|OPF_FLAGS }, |
04abc5d6 |
981 | { "shld", OP_SHLD, 3, 3, OPF_DATA|OPF_FLAGS }, |
3b2f4044 |
982 | { "shrd", OP_SHRD, 3, 3, OPF_DATA|OPF_FLAGS }, |
d4e3b5db |
983 | { "rol", OP_ROL, 2, 2, OPF_DATA|OPF_FLAGS }, |
984 | { "ror", OP_ROR, 2, 2, OPF_DATA|OPF_FLAGS }, |
092f64e1 |
985 | { "rcl", OP_RCL, 2, 2, OPF_DATA|OPF_FLAGS|OPF_CC, PFO_C }, |
986 | { "rcr", OP_RCR, 2, 2, OPF_DATA|OPF_FLAGS|OPF_CC, PFO_C }, |
987 | { "adc", OP_ADC, 2, 2, OPF_DATA|OPF_FLAGS|OPF_CC, PFO_C }, |
988 | { "sbb", OP_SBB, 2, 2, OPF_DATA|OPF_FLAGS|OPF_CC, PFO_C }, |
1f84f6b3 |
989 | { "bsf", OP_BSF, 2, 2, OPF_DATA|OPF_FLAGS }, |
69a3cdfc |
990 | { "inc", OP_INC, 1, 1, OPF_DATA|OPF_FLAGS }, |
991 | { "dec", OP_DEC, 1, 1, OPF_DATA|OPF_FLAGS }, |
5101a5f9 |
992 | { "neg", OP_NEG, 1, 1, OPF_DATA|OPF_FLAGS }, |
993 | { "mul", OP_MUL, 1, 1, OPF_DATA|OPF_FLAGS }, |
69a3cdfc |
994 | { "imul", OP_IMUL, 1, 3, OPF_DATA|OPF_FLAGS }, |
5101a5f9 |
995 | { "div", OP_DIV, 1, 1, OPF_DATA|OPF_FLAGS }, |
996 | { "idiv", OP_IDIV, 1, 1, OPF_DATA|OPF_FLAGS }, |
69a3cdfc |
997 | { "test", OP_TEST, 2, 2, OPF_FLAGS }, |
998 | { "cmp", OP_CMP, 2, 2, OPF_FLAGS }, |
a3684be1 |
999 | { "retn", OP_RET, 0, 1, OPF_TAIL }, |
de50b98b |
1000 | { "call", OP_CALL, 1, 1, OPF_JMP|OPF_DATA|OPF_FLAGS }, |
69a3cdfc |
1001 | { "jmp", OP_JMP, 1, 1, OPF_JMP }, |
5c024ef7 |
1002 | { "jecxz",OP_JECXZ, 1, 1, OPF_JMP|OPF_CJMP }, |
04abc5d6 |
1003 | { "loop", OP_LOOP, 1, 1, OPF_JMP|OPF_CJMP|OPF_DATA }, |
092f64e1 |
1004 | { "jo", OP_JCC, 1, 1, OPF_CJMP_CC, PFO_O, 0 }, // 70 OF=1 |
1005 | { "jno", OP_JCC, 1, 1, OPF_CJMP_CC, PFO_O, 1 }, // 71 OF=0 |
1006 | { "jc", OP_JCC, 1, 1, OPF_CJMP_CC, PFO_C, 0 }, // 72 CF=1 |
1007 | { "jb", OP_JCC, 1, 1, OPF_CJMP_CC, PFO_C, 0 }, // 72 |
1008 | { "jnc", OP_JCC, 1, 1, OPF_CJMP_CC, PFO_C, 1 }, // 73 CF=0 |
1009 | { "jnb", OP_JCC, 1, 1, OPF_CJMP_CC, PFO_C, 1 }, // 73 |
1010 | { "jae", OP_JCC, 1, 1, OPF_CJMP_CC, PFO_C, 1 }, // 73 |
1011 | { "jz", OP_JCC, 1, 1, OPF_CJMP_CC, PFO_Z, 0 }, // 74 ZF=1 |
1012 | { "je", OP_JCC, 1, 1, OPF_CJMP_CC, PFO_Z, 0 }, // 74 |
1013 | { "jnz", OP_JCC, 1, 1, OPF_CJMP_CC, PFO_Z, 1 }, // 75 ZF=0 |
1014 | { "jne", OP_JCC, 1, 1, OPF_CJMP_CC, PFO_Z, 1 }, // 75 |
1015 | { "jbe", OP_JCC, 1, 1, OPF_CJMP_CC, PFO_BE, 0 }, // 76 CF=1||ZF=1 |
1016 | { "jna", OP_JCC, 1, 1, OPF_CJMP_CC, PFO_BE, 0 }, // 76 |
1017 | { "ja", OP_JCC, 1, 1, OPF_CJMP_CC, PFO_BE, 1 }, // 77 CF=0&&ZF=0 |
1018 | { "jnbe", OP_JCC, 1, 1, OPF_CJMP_CC, PFO_BE, 1 }, // 77 |
1019 | { "js", OP_JCC, 1, 1, OPF_CJMP_CC, PFO_S, 0 }, // 78 SF=1 |
1020 | { "jns", OP_JCC, 1, 1, OPF_CJMP_CC, PFO_S, 1 }, // 79 SF=0 |
1021 | { "jp", OP_JCC, 1, 1, OPF_CJMP_CC, PFO_P, 0 }, // 7a PF=1 |
1022 | { "jpe", OP_JCC, 1, 1, OPF_CJMP_CC, PFO_P, 0 }, // 7a |
1023 | { "jnp", OP_JCC, 1, 1, OPF_CJMP_CC, PFO_P, 1 }, // 7b PF=0 |
1024 | { "jpo", OP_JCC, 1, 1, OPF_CJMP_CC, PFO_P, 1 }, // 7b |
1025 | { "jl", OP_JCC, 1, 1, OPF_CJMP_CC, PFO_L, 0 }, // 7c SF!=OF |
1026 | { "jnge", OP_JCC, 1, 1, OPF_CJMP_CC, PFO_L, 0 }, // 7c |
1027 | { "jge", OP_JCC, 1, 1, OPF_CJMP_CC, PFO_L, 1 }, // 7d SF=OF |
1028 | { "jnl", OP_JCC, 1, 1, OPF_CJMP_CC, PFO_L, 1 }, // 7d |
1029 | { "jle", OP_JCC, 1, 1, OPF_CJMP_CC, PFO_LE, 0 }, // 7e ZF=1||SF!=OF |
1030 | { "jng", OP_JCC, 1, 1, OPF_CJMP_CC, PFO_LE, 0 }, // 7e |
1031 | { "jg", OP_JCC, 1, 1, OPF_CJMP_CC, PFO_LE, 1 }, // 7f ZF=0&&SF=OF |
1032 | { "jnle", OP_JCC, 1, 1, OPF_CJMP_CC, PFO_LE, 1 }, // 7f |
1033 | { "seto", OP_SCC, 1, 1, OPF_DATA|OPF_CC, PFO_O, 0 }, |
1034 | { "setno", OP_SCC, 1, 1, OPF_DATA|OPF_CC, PFO_O, 1 }, |
1035 | { "setc", OP_SCC, 1, 1, OPF_DATA|OPF_CC, PFO_C, 0 }, |
1036 | { "setb", OP_SCC, 1, 1, OPF_DATA|OPF_CC, PFO_C, 0 }, |
1037 | { "setnc", OP_SCC, 1, 1, OPF_DATA|OPF_CC, PFO_C, 1 }, |
1038 | { "setae", OP_SCC, 1, 1, OPF_DATA|OPF_CC, PFO_C, 1 }, |
1039 | { "setnb", OP_SCC, 1, 1, OPF_DATA|OPF_CC, PFO_C, 1 }, |
1040 | { "setz", OP_SCC, 1, 1, OPF_DATA|OPF_CC, PFO_Z, 0 }, |
1041 | { "sete", OP_SCC, 1, 1, OPF_DATA|OPF_CC, PFO_Z, 0 }, |
1042 | { "setnz", OP_SCC, 1, 1, OPF_DATA|OPF_CC, PFO_Z, 1 }, |
1043 | { "setne", OP_SCC, 1, 1, OPF_DATA|OPF_CC, PFO_Z, 1 }, |
1044 | { "setbe", OP_SCC, 1, 1, OPF_DATA|OPF_CC, PFO_BE, 0 }, |
1045 | { "setna", OP_SCC, 1, 1, OPF_DATA|OPF_CC, PFO_BE, 0 }, |
1046 | { "seta", OP_SCC, 1, 1, OPF_DATA|OPF_CC, PFO_BE, 1 }, |
1047 | { "setnbe", OP_SCC, 1, 1, OPF_DATA|OPF_CC, PFO_BE, 1 }, |
1048 | { "sets", OP_SCC, 1, 1, OPF_DATA|OPF_CC, PFO_S, 0 }, |
1049 | { "setns", OP_SCC, 1, 1, OPF_DATA|OPF_CC, PFO_S, 1 }, |
1050 | { "setp", OP_SCC, 1, 1, OPF_DATA|OPF_CC, PFO_P, 0 }, |
1051 | { "setpe", OP_SCC, 1, 1, OPF_DATA|OPF_CC, PFO_P, 0 }, |
1052 | { "setnp", OP_SCC, 1, 1, OPF_DATA|OPF_CC, PFO_P, 1 }, |
1053 | { "setpo", OP_SCC, 1, 1, OPF_DATA|OPF_CC, PFO_P, 1 }, |
1054 | { "setl", OP_SCC, 1, 1, OPF_DATA|OPF_CC, PFO_L, 0 }, |
1055 | { "setnge", OP_SCC, 1, 1, OPF_DATA|OPF_CC, PFO_L, 0 }, |
1056 | { "setge", OP_SCC, 1, 1, OPF_DATA|OPF_CC, PFO_L, 1 }, |
1057 | { "setnl", OP_SCC, 1, 1, OPF_DATA|OPF_CC, PFO_L, 1 }, |
1058 | { "setle", OP_SCC, 1, 1, OPF_DATA|OPF_CC, PFO_LE, 0 }, |
1059 | { "setng", OP_SCC, 1, 1, OPF_DATA|OPF_CC, PFO_LE, 0 }, |
1060 | { "setg", OP_SCC, 1, 1, OPF_DATA|OPF_CC, PFO_LE, 1 }, |
1061 | { "setnle", OP_SCC, 1, 1, OPF_DATA|OPF_CC, PFO_LE, 1 }, |
90307a99 |
1062 | // x87 |
d4a985bd |
1063 | { "fld", OP_FLD, 1, 1, OPF_FPUSH }, |
1064 | { "fild", OP_FILD, 1, 1, OPF_FPUSH }, |
1065 | { "fld1", OP_FLDc, 0, 0, OPF_FPUSH }, |
fe18df39 |
1066 | { "fldln2", OP_FLDc, 0, 0, OPF_FPUSH }, |
d4a985bd |
1067 | { "fldz", OP_FLDc, 0, 0, OPF_FPUSH }, |
d4a985bd |
1068 | { "fst", OP_FST, 1, 1, 0 }, |
16057ce1 |
1069 | { "fstp", OP_FST, 1, 1, OPF_FPOP }, |
1070 | { "fist", OP_FIST, 1, 1, 0 }, |
1071 | { "fistp", OP_FIST, 1, 1, OPF_FPOP }, |
d4a985bd |
1072 | { "fadd", OP_FADD, 0, 2, 0 }, |
1073 | { "faddp", OP_FADD, 0, 2, OPF_FPOP }, |
1074 | { "fdiv", OP_FDIV, 0, 2, 0 }, |
1075 | { "fdivp", OP_FDIV, 0, 2, OPF_FPOP }, |
1076 | { "fmul", OP_FMUL, 0, 2, 0 }, |
1077 | { "fmulp", OP_FMUL, 0, 2, OPF_FPOP }, |
1078 | { "fsub", OP_FSUB, 0, 2, 0 }, |
1079 | { "fsubp", OP_FSUB, 0, 2, OPF_FPOP }, |
1080 | { "fdivr", OP_FDIVR, 0, 2, 0 }, |
1081 | { "fdivrp", OP_FDIVR, 0, 2, OPF_FPOP }, |
1082 | { "fsubr", OP_FSUBR, 0, 2, 0 }, |
1083 | { "fsubrp", OP_FSUBR, 0, 2, OPF_FPOP }, |
1084 | { "fiadd", OP_FIADD, 1, 1, 0 }, |
1085 | { "fidiv", OP_FIDIV, 1, 1, 0 }, |
1086 | { "fimul", OP_FIMUL, 1, 1, 0 }, |
1087 | { "fisub", OP_FISUB, 1, 1, 0 }, |
1088 | { "fidivr", OP_FIDIVR, 1, 1, 0 }, |
1089 | { "fisubr", OP_FISUBR, 1, 1, 0 }, |
16057ce1 |
1090 | { "fcom", OP_FCOM, 0, 1, 0 }, |
1091 | { "fcomp", OP_FCOM, 0, 1, OPF_FPOP }, |
1092 | { "fnstsw", OP_FNSTSW, 1, 1, OPF_DATA }, |
fe18df39 |
1093 | { "fchs", OP_FCHS, 0, 0, 0 }, |
497a6d6b |
1094 | { "fcos", OP_FCOS, 0, 0, 0 }, |
1095 | { "fpatan", OP_FPATAN, 0, 0, OPF_FPOP }, |
1096 | { "fptan", OP_FPTAN, 0, 0, OPF_FPUSH }, |
1097 | { "fsin", OP_FSIN, 0, 0, 0 }, |
1098 | { "fsqrt", OP_FSQRT, 0, 0, 0 }, |
fe18df39 |
1099 | { "fxch", OP_FXCH, 1, 1, 0 }, |
1100 | { "fyl2x", OP_FYL2X, 0, 0, OPF_FPOP }, |
90307a99 |
1101 | // mmx |
d4a985bd |
1102 | { "emms", OP_EMMS, 0, 0, OPF_DATA }, |
1103 | { "movq", OP_MOV, 2, 2, OPF_DATA }, |
1104 | // pseudo-ops for lib calls |
622eb2ef |
1105 | { "_allshl",OPP_ALLSHL }, |
1106 | { "_allshr",OPP_ALLSHR }, |
d4a985bd |
1107 | { "_ftol", OPP_FTOL }, |
8c83cc48 |
1108 | { "_CIpow", OPP_CIPOW }, |
2c10ea1f |
1109 | // must be last |
1110 | { "ud2", OP_UD2 }, |
69a3cdfc |
1111 | }; |
c36e914d |
1112 | |
1113 | static void parse_op(struct parsed_op *op, char words[16][256], int wordc) |
1114 | { |
bfa4a6ee |
1115 | enum opr_lenmod lmod = OPLM_UNSPEC; |
33c35af6 |
1116 | int prefix_flags = 0; |
69a3cdfc |
1117 | int regmask_ind; |
1118 | int regmask; |
33c35af6 |
1119 | int op_w = 0; |
91977a1c |
1120 | int opr = 0; |
33c35af6 |
1121 | int w = 0; |
acd03176 |
1122 | int i, j; |
c36e914d |
1123 | |
33c35af6 |
1124 | for (i = 0; i < ARRAY_SIZE(pref_table); i++) { |
1125 | if (IS(words[w], pref_table[i].name)) { |
1126 | prefix_flags = pref_table[i].flags; |
1127 | break; |
1128 | } |
1129 | } |
1130 | |
1131 | if (prefix_flags) { |
1132 | if (wordc <= 1) |
1133 | aerr("lone prefix: '%s'\n", words[0]); |
1134 | w++; |
1135 | } |
1136 | |
1137 | op_w = w; |
91977a1c |
1138 | for (i = 0; i < ARRAY_SIZE(op_table); i++) { |
33c35af6 |
1139 | if (IS(words[w], op_table[i].name)) |
69a3cdfc |
1140 | break; |
1141 | } |
c36e914d |
1142 | |
2c10ea1f |
1143 | if (i == ARRAY_SIZE(op_table)) { |
30c8c549 |
1144 | if (!g_skip_func) |
1145 | aerr("unhandled op: '%s'\n", words[0]); |
2c10ea1f |
1146 | i--; // OP_UD2 |
1147 | } |
33c35af6 |
1148 | w++; |
c36e914d |
1149 | |
69a3cdfc |
1150 | op->op = op_table[i].op; |
33c35af6 |
1151 | op->flags = op_table[i].flags | prefix_flags; |
092f64e1 |
1152 | op->pfo = op_table[i].pfo; |
1153 | op->pfo_inv = op_table[i].pfo_inv; |
69a3cdfc |
1154 | op->regmask_src = op->regmask_dst = 0; |
8eb12e72 |
1155 | op->asmln = asmln; |
69a3cdfc |
1156 | |
2c10ea1f |
1157 | if (op->op == OP_UD2) |
1158 | return; |
1159 | |
92d715b6 |
1160 | for (opr = 0; opr < op_table[i].maxopr; opr++) { |
1161 | if (opr >= op_table[i].minopr && w >= wordc) |
1162 | break; |
1163 | |
69a3cdfc |
1164 | regmask = regmask_ind = 0; |
1165 | w = parse_operand(&op->operand[opr], ®mask, ®mask_ind, |
1166 | words, wordc, w, op->flags); |
1167 | |
1168 | if (opr == 0 && (op->flags & OPF_DATA)) |
1169 | op->regmask_dst = regmask; |
92d715b6 |
1170 | else |
1171 | op->regmask_src |= regmask; |
1172 | op->regmask_src |= regmask_ind; |
d4a985bd |
1173 | |
1174 | if (op->operand[opr].lmod != OPLM_UNSPEC) |
1175 | g_func_lmods |= 1 << op->operand[opr].lmod; |
91977a1c |
1176 | } |
c36e914d |
1177 | |
91977a1c |
1178 | if (w < wordc) |
1179 | aerr("parse_op %s incomplete: %d/%d\n", |
1180 | words[0], w, wordc); |
5101a5f9 |
1181 | |
1182 | // special cases |
1183 | op->operand_cnt = opr; |
1184 | if (!strncmp(op_table[i].name, "set", 3)) |
1185 | op->operand[0].lmod = OPLM_BYTE; |
1186 | |
5101a5f9 |
1187 | switch (op->op) { |
92d715b6 |
1188 | // first operand is not dst |
1189 | case OP_CMP: |
1190 | case OP_TEST: |
1191 | op->regmask_src |= op->regmask_dst; |
1192 | op->regmask_dst = 0; |
1193 | break; |
1194 | |
1195 | // first operand is src too |
1196 | case OP_NOT: |
1197 | case OP_ADD: |
1198 | case OP_AND: |
1199 | case OP_OR: |
1200 | case OP_RCL: |
1201 | case OP_RCR: |
1202 | case OP_ADC: |
1203 | case OP_INC: |
1204 | case OP_DEC: |
1205 | case OP_NEG: |
622eb2ef |
1206 | case OP_BSWAP: |
92d715b6 |
1207 | // more below.. |
1208 | op->regmask_src |= op->regmask_dst; |
1209 | break; |
1210 | |
1211 | // special |
1212 | case OP_XCHG: |
1213 | op->regmask_src |= op->regmask_dst; |
1214 | op->regmask_dst |= op->regmask_src; |
1215 | goto check_align; |
1216 | |
1217 | case OP_SUB: |
1218 | case OP_SBB: |
1219 | case OP_XOR: |
1220 | if (op->operand[0].type == OPT_REG && op->operand[1].type == OPT_REG |
1221 | && op->operand[0].lmod == op->operand[1].lmod |
1222 | && op->operand[0].reg == op->operand[1].reg |
1223 | && IS(op->operand[0].name, op->operand[1].name)) // ! ah, al.. |
1224 | { |
1225 | op->regmask_src = 0; |
1226 | } |
1227 | else |
1228 | op->regmask_src |= op->regmask_dst; |
1229 | break; |
1230 | |
1231 | // ops with implicit argumets |
04abc5d6 |
1232 | case OP_XLAT: |
1233 | op->operand_cnt = 2; |
1234 | setup_reg_opr(&op->operand[0], xAX, OPLM_BYTE, &op->regmask_src); |
1235 | op->regmask_dst = op->regmask_src; |
3947cf24 |
1236 | setup_reg_opr(&op->operand[1], xBX, OPLM_DWORD, &op->regmask_src); |
04abc5d6 |
1237 | break; |
1238 | |
5101a5f9 |
1239 | case OP_CDQ: |
1240 | op->operand_cnt = 2; |
1241 | setup_reg_opr(&op->operand[0], xDX, OPLM_DWORD, &op->regmask_dst); |
1242 | setup_reg_opr(&op->operand[1], xAX, OPLM_DWORD, &op->regmask_src); |
1243 | break; |
1244 | |
092f64e1 |
1245 | case OP_LODS: |
33c35af6 |
1246 | case OP_STOS: |
591721d7 |
1247 | case OP_SCAS: |
591721d7 |
1248 | if (words[op_w][4] == 'b') |
33c35af6 |
1249 | lmod = OPLM_BYTE; |
591721d7 |
1250 | else if (words[op_w][4] == 'w') |
33c35af6 |
1251 | lmod = OPLM_WORD; |
591721d7 |
1252 | else if (words[op_w][4] == 'd') |
33c35af6 |
1253 | lmod = OPLM_DWORD; |
acd03176 |
1254 | j = 0; |
3947cf24 |
1255 | op->regmask_src = 0; |
acd03176 |
1256 | setup_reg_opr(&op->operand[j++], op->op == OP_LODS ? xSI : xDI, |
3947cf24 |
1257 | OPLM_DWORD, &op->regmask_src); |
d4e3b5db |
1258 | op->regmask_dst = op->regmask_src; |
3947cf24 |
1259 | setup_reg_opr(&op->operand[j++], xAX, lmod, |
092f64e1 |
1260 | op->op == OP_LODS ? &op->regmask_dst : &op->regmask_src); |
3947cf24 |
1261 | if (op->flags & OPF_REP) { |
1262 | setup_reg_opr(&op->operand[j++], xCX, OPLM_DWORD, &op->regmask_src); |
1263 | op->regmask_dst |= 1 << xCX; |
1264 | } |
acd03176 |
1265 | op->operand_cnt = j; |
33c35af6 |
1266 | break; |
1267 | |
d4e3b5db |
1268 | case OP_MOVS: |
7ba45c34 |
1269 | case OP_CMPS: |
7ba45c34 |
1270 | if (words[op_w][4] == 'b') |
d4e3b5db |
1271 | lmod = OPLM_BYTE; |
7ba45c34 |
1272 | else if (words[op_w][4] == 'w') |
d4e3b5db |
1273 | lmod = OPLM_WORD; |
7ba45c34 |
1274 | else if (words[op_w][4] == 'd') |
d4e3b5db |
1275 | lmod = OPLM_DWORD; |
acd03176 |
1276 | j = 0; |
3947cf24 |
1277 | op->regmask_src = 0; |
1278 | // note: lmod is not correct, don't have where to place it |
acd03176 |
1279 | setup_reg_opr(&op->operand[j++], xDI, lmod, &op->regmask_src); |
1280 | setup_reg_opr(&op->operand[j++], xSI, OPLM_DWORD, &op->regmask_src); |
1281 | if (op->flags & OPF_REP) |
1282 | setup_reg_opr(&op->operand[j++], xCX, OPLM_DWORD, &op->regmask_src); |
1283 | op->operand_cnt = j; |
d4e3b5db |
1284 | op->regmask_dst = op->regmask_src; |
1285 | break; |
1286 | |
04abc5d6 |
1287 | case OP_LOOP: |
1288 | op->regmask_dst = 1 << xCX; |
1289 | // fallthrough |
5c024ef7 |
1290 | case OP_JECXZ: |
04abc5d6 |
1291 | op->operand_cnt = 2; |
5c024ef7 |
1292 | op->regmask_src = 1 << xCX; |
04abc5d6 |
1293 | op->operand[1].type = OPT_REG; |
1294 | op->operand[1].reg = xCX; |
1295 | op->operand[1].lmod = OPLM_DWORD; |
5c024ef7 |
1296 | break; |
1297 | |
5101a5f9 |
1298 | case OP_IMUL: |
b2bd20c0 |
1299 | if (op->operand_cnt == 2) { |
1300 | if (op->operand[0].type != OPT_REG) |
1301 | aerr("reg expected\n"); |
1302 | op->regmask_src |= 1 << op->operand[0].reg; |
1303 | } |
5101a5f9 |
1304 | if (op->operand_cnt != 1) |
1305 | break; |
1306 | // fallthrough |
1307 | case OP_MUL: |
1308 | // singleop mul |
92d715b6 |
1309 | op->regmask_src |= op->regmask_dst; |
5101a5f9 |
1310 | op->regmask_dst = (1 << xDX) | (1 << xAX); |
5101a5f9 |
1311 | if (op->operand[0].lmod == OPLM_UNSPEC) |
1312 | op->operand[0].lmod = OPLM_DWORD; |
1313 | break; |
1314 | |
1315 | case OP_DIV: |
1316 | case OP_IDIV: |
1317 | // we could set up operands for edx:eax, but there is no real need to |
1318 | // (see is_opr_modified()) |
92d715b6 |
1319 | op->regmask_src |= op->regmask_dst; |
1320 | op->regmask_dst = (1 << xDX) | (1 << xAX); |
5101a5f9 |
1321 | if (op->operand[0].lmod == OPLM_UNSPEC) |
1322 | op->operand[0].lmod = OPLM_DWORD; |
1323 | break; |
1324 | |
1325 | case OP_SHL: |
1326 | case OP_SHR: |
1327 | case OP_SAR: |
d4e3b5db |
1328 | case OP_ROL: |
1329 | case OP_ROR: |
92d715b6 |
1330 | op->regmask_src |= op->regmask_dst; |
5101a5f9 |
1331 | if (op->operand[1].lmod == OPLM_UNSPEC) |
1332 | op->operand[1].lmod = OPLM_BYTE; |
1333 | break; |
1334 | |
acd03176 |
1335 | case OP_SHLD: |
3b2f4044 |
1336 | case OP_SHRD: |
92d715b6 |
1337 | op->regmask_src |= op->regmask_dst; |
3b2f4044 |
1338 | if (op->operand[2].lmod == OPLM_UNSPEC) |
1339 | op->operand[2].lmod = OPLM_BYTE; |
1340 | break; |
1341 | |
7ba45c34 |
1342 | case OP_PUSH: |
92d715b6 |
1343 | op->regmask_src |= op->regmask_dst; |
1344 | op->regmask_dst = 0; |
7ba45c34 |
1345 | if (op->operand[0].lmod == OPLM_UNSPEC |
1346 | && (op->operand[0].type == OPT_CONST |
1347 | || op->operand[0].type == OPT_OFFSET |
1348 | || op->operand[0].type == OPT_LABEL)) |
1349 | op->operand[0].lmod = OPLM_DWORD; |
1350 | break; |
1351 | |
3ebea2cf |
1352 | // alignment |
1353 | case OP_MOV: |
092f64e1 |
1354 | check_align: |
3ebea2cf |
1355 | if (op->operand[0].type == OPT_REG && op->operand[1].type == OPT_REG |
092f64e1 |
1356 | && op->operand[0].lmod == op->operand[1].lmod |
1357 | && op->operand[0].reg == op->operand[1].reg |
92d715b6 |
1358 | && IS(op->operand[0].name, op->operand[1].name)) // ! ah, al.. |
3ebea2cf |
1359 | { |
b2bd20c0 |
1360 | op->flags |= OPF_RMD | OPF_DONE | OPF_NOREGS; |
092f64e1 |
1361 | op->regmask_src = op->regmask_dst = 0; |
3ebea2cf |
1362 | } |
1363 | break; |
1364 | |
de50b98b |
1365 | case OP_LEA: |
1366 | if (op->operand[0].type == OPT_REG |
1367 | && op->operand[1].type == OPT_REGMEM) |
1368 | { |
1369 | char buf[16]; |
1370 | snprintf(buf, sizeof(buf), "%s+0", op->operand[0].name); |
1371 | if (IS(buf, op->operand[1].name)) |
b2bd20c0 |
1372 | op->flags |= OPF_RMD | OPF_DONE | OPF_NOREGS; |
de50b98b |
1373 | } |
1374 | break; |
1375 | |
89ff3147 |
1376 | case OP_CALL: |
1377 | // trashed regs must be explicitly detected later |
1378 | op->regmask_dst = 0; |
1379 | break; |
1380 | |
92d715b6 |
1381 | case OP_LEAVE: |
1382 | op->regmask_dst = (1 << xBP) | (1 << xSP); |
1383 | op->regmask_src = 1 << xBP; |
1384 | break; |
1385 | |
d4a985bd |
1386 | case OP_FLD: |
1387 | case OP_FILD: |
1388 | op->regmask_dst |= mxST0; |
1389 | break; |
1390 | |
1391 | case OP_FLDc: |
1392 | op->regmask_dst |= mxST0; |
1393 | if (IS(words[op_w] + 3, "1")) |
1394 | op->operand[0].val = X87_CONST_1; |
fe18df39 |
1395 | else if (IS(words[op_w] + 3, "ln2")) |
1396 | op->operand[0].val = X87_CONST_LN2; |
d4a985bd |
1397 | else if (IS(words[op_w] + 3, "z")) |
1398 | op->operand[0].val = X87_CONST_Z; |
1399 | else |
1400 | aerr("TODO\n"); |
1401 | break; |
1402 | |
1403 | case OP_FST: |
16057ce1 |
1404 | case OP_FIST: |
d4a985bd |
1405 | op->regmask_src |= mxST0; |
1406 | break; |
1407 | |
1408 | case OP_FADD: |
1409 | case OP_FDIV: |
1410 | case OP_FMUL: |
1411 | case OP_FSUB: |
1412 | case OP_FDIVR: |
1413 | case OP_FSUBR: |
1414 | op->regmask_src |= mxST0; |
1415 | if (op->operand_cnt == 2) |
1416 | op->regmask_src |= op->regmask_dst; |
1417 | else if (op->operand_cnt == 1) { |
1418 | memcpy(&op->operand[1], &op->operand[0], sizeof(op->operand[1])); |
1419 | op->operand[0].type = OPT_REG; |
1420 | op->operand[0].lmod = OPLM_QWORD; |
1421 | op->operand[0].reg = xST0; |
1422 | op->regmask_dst |= mxST0; |
1423 | } |
1424 | else |
1425 | // IDA doesn't use this |
1426 | aerr("no operands?\n"); |
1427 | break; |
1428 | |
1429 | case OP_FIADD: |
1430 | case OP_FIDIV: |
1431 | case OP_FIMUL: |
1432 | case OP_FISUB: |
1433 | case OP_FIDIVR: |
1434 | case OP_FISUBR: |
fe18df39 |
1435 | case OP_FCHS: |
497a6d6b |
1436 | case OP_FCOS: |
1437 | case OP_FSIN: |
1438 | case OP_FSQRT: |
fe18df39 |
1439 | case OP_FXCH: |
d4a985bd |
1440 | op->regmask_src |= mxST0; |
1441 | op->regmask_dst |= mxST0; |
1442 | break; |
1443 | |
497a6d6b |
1444 | case OP_FPATAN: |
fe18df39 |
1445 | case OP_FYL2X: |
497a6d6b |
1446 | op->regmask_src |= mxST0 | mxST1; |
1447 | op->regmask_dst |= mxST0; |
1448 | break; |
1449 | |
1450 | case OP_FPTAN: |
1451 | aerr("TODO\n"); |
1452 | break; |
1453 | |
16057ce1 |
1454 | case OP_FCOM: |
1455 | op->regmask_src |= mxST0; |
1456 | break; |
1457 | |
5101a5f9 |
1458 | default: |
1459 | break; |
1460 | } |
2b70f6d3 |
1461 | |
1462 | if (op->operand[0].type == OPT_REG |
2b70f6d3 |
1463 | && op->operand[1].type == OPT_CONST) |
1464 | { |
acd03176 |
1465 | struct parsed_opr *op1 = &op->operand[1]; |
1466 | if ((op->op == OP_AND && op1->val == 0) |
1467 | || (op->op == OP_OR |
1468 | && (op1->val == ~0 |
1469 | || (op->operand[0].lmod == OPLM_WORD && op1->val == 0xffff) |
1470 | || (op->operand[0].lmod == OPLM_BYTE && op1->val == 0xff)))) |
2b70f6d3 |
1471 | { |
1472 | op->regmask_src = 0; |
1473 | } |
1474 | } |
c36e914d |
1475 | } |
1476 | |
092f64e1 |
1477 | static const char *op_name(struct parsed_op *po) |
850c9265 |
1478 | { |
092f64e1 |
1479 | static char buf[16]; |
1480 | char *p; |
850c9265 |
1481 | int i; |
1482 | |
092f64e1 |
1483 | if (po->op == OP_JCC || po->op == OP_SCC) { |
1484 | p = buf; |
1485 | *p++ = (po->op == OP_JCC) ? 'j' : 's'; |
1486 | if (po->pfo_inv) |
1487 | *p++ = 'n'; |
1488 | strcpy(p, parsed_flag_op_names[po->pfo]); |
1489 | return buf; |
1490 | } |
1491 | |
850c9265 |
1492 | for (i = 0; i < ARRAY_SIZE(op_table); i++) |
092f64e1 |
1493 | if (op_table[i].op == po->op) |
850c9265 |
1494 | return op_table[i].name; |
1495 | |
1496 | return "???"; |
1497 | } |
1498 | |
1499 | // debug |
1500 | static const char *dump_op(struct parsed_op *po) |
1501 | { |
1502 | static char out[128]; |
1503 | char *p = out; |
1504 | int i; |
1505 | |
4c45fa73 |
1506 | if (po == NULL) |
1507 | return "???"; |
1508 | |
092f64e1 |
1509 | snprintf(out, sizeof(out), "%s", op_name(po)); |
850c9265 |
1510 | for (i = 0; i < po->operand_cnt; i++) { |
1511 | p += strlen(p); |
1512 | if (i > 0) |
1513 | *p++ = ','; |
1514 | snprintf(p, sizeof(out) - (p - out), |
1515 | po->operand[i].type == OPT_REGMEM ? " [%s]" : " %s", |
1516 | po->operand[i].name); |
1517 | } |
1518 | |
1519 | return out; |
1520 | } |
1521 | |
4c45fa73 |
1522 | static const char *lmod_type_u(struct parsed_op *po, |
1523 | enum opr_lenmod lmod) |
1524 | { |
1525 | switch (lmod) { |
90307a99 |
1526 | case OPLM_QWORD: |
1527 | return "u64"; |
4c45fa73 |
1528 | case OPLM_DWORD: |
1529 | return "u32"; |
1530 | case OPLM_WORD: |
1531 | return "u16"; |
1532 | case OPLM_BYTE: |
1533 | return "u8"; |
1534 | default: |
1535 | ferr(po, "invalid lmod: %d\n", lmod); |
1536 | return "(_invalid_)"; |
1537 | } |
1538 | } |
1539 | |
d4e3b5db |
1540 | static const char *lmod_cast_u(struct parsed_op *po, |
1541 | enum opr_lenmod lmod) |
1542 | { |
1543 | switch (lmod) { |
90307a99 |
1544 | case OPLM_QWORD: |
1545 | return ""; |
d4e3b5db |
1546 | case OPLM_DWORD: |
1547 | return ""; |
1548 | case OPLM_WORD: |
1549 | return "(u16)"; |
1550 | case OPLM_BYTE: |
1551 | return "(u8)"; |
1552 | default: |
1553 | ferr(po, "invalid lmod: %d\n", lmod); |
1554 | return "(_invalid_)"; |
1555 | } |
1556 | } |
1557 | |
1558 | static const char *lmod_cast_u_ptr(struct parsed_op *po, |
1559 | enum opr_lenmod lmod) |
1560 | { |
1561 | switch (lmod) { |
90307a99 |
1562 | case OPLM_QWORD: |
1563 | return "*(u64 *)"; |
d4e3b5db |
1564 | case OPLM_DWORD: |
1565 | return "*(u32 *)"; |
1566 | case OPLM_WORD: |
1567 | return "*(u16 *)"; |
1568 | case OPLM_BYTE: |
1569 | return "*(u8 *)"; |
1570 | default: |
1571 | ferr(po, "invalid lmod: %d\n", lmod); |
1572 | return "(_invalid_)"; |
1573 | } |
1574 | } |
1575 | |
1576 | static const char *lmod_cast_s(struct parsed_op *po, |
1577 | enum opr_lenmod lmod) |
1578 | { |
1579 | switch (lmod) { |
90307a99 |
1580 | case OPLM_QWORD: |
1581 | return "(s64)"; |
d4e3b5db |
1582 | case OPLM_DWORD: |
1583 | return "(s32)"; |
1584 | case OPLM_WORD: |
1585 | return "(s16)"; |
1586 | case OPLM_BYTE: |
1587 | return "(s8)"; |
1588 | default: |
1589 | ferr(po, "%s: invalid lmod: %d\n", __func__, lmod); |
1590 | return "(_invalid_)"; |
1591 | } |
1592 | } |
1593 | |
1594 | static const char *lmod_cast(struct parsed_op *po, |
1595 | enum opr_lenmod lmod, int is_signed) |
1596 | { |
1597 | return is_signed ? |
1598 | lmod_cast_s(po, lmod) : |
1599 | lmod_cast_u(po, lmod); |
1600 | } |
1601 | |
1602 | static int lmod_bytes(struct parsed_op *po, enum opr_lenmod lmod) |
1603 | { |
1604 | switch (lmod) { |
90307a99 |
1605 | case OPLM_QWORD: |
1606 | return 8; |
d4e3b5db |
1607 | case OPLM_DWORD: |
1608 | return 4; |
1609 | case OPLM_WORD: |
1610 | return 2; |
1611 | case OPLM_BYTE: |
1612 | return 1; |
1613 | default: |
1614 | ferr(po, "%s: invalid lmod: %d\n", __func__, lmod); |
1615 | return 0; |
1616 | } |
1617 | } |
1618 | |
91977a1c |
1619 | static const char *opr_name(struct parsed_op *po, int opr_num) |
c36e914d |
1620 | { |
91977a1c |
1621 | if (opr_num >= po->operand_cnt) |
1622 | ferr(po, "opr OOR: %d/%d\n", opr_num, po->operand_cnt); |
1623 | return po->operand[opr_num].name; |
c36e914d |
1624 | } |
1625 | |
91977a1c |
1626 | static unsigned int opr_const(struct parsed_op *po, int opr_num) |
c36e914d |
1627 | { |
91977a1c |
1628 | if (opr_num >= po->operand_cnt) |
1629 | ferr(po, "opr OOR: %d/%d\n", opr_num, po->operand_cnt); |
1630 | if (po->operand[opr_num].type != OPT_CONST) |
1631 | ferr(po, "opr %d: const expected\n", opr_num); |
1632 | return po->operand[opr_num].val; |
1633 | } |
c36e914d |
1634 | |
91977a1c |
1635 | static const char *opr_reg_p(struct parsed_op *po, struct parsed_opr *popr) |
1636 | { |
90307a99 |
1637 | if ((unsigned int)popr->reg >= ARRAY_SIZE(regs_r32)) |
91977a1c |
1638 | ferr(po, "invalid reg: %d\n", popr->reg); |
1639 | return regs_r32[popr->reg]; |
1640 | } |
c36e914d |
1641 | |
e7f5bc39 |
1642 | static int check_simple_cast(const char *cast, int *bits, int *is_signed) |
1643 | { |
1644 | if (IS_START(cast, "(s8)") || IS_START(cast, "(u8)")) |
1645 | *bits = 8; |
1646 | else if (IS_START(cast, "(s16)") || IS_START(cast, "(u16)")) |
1647 | *bits = 16; |
1648 | else if (IS_START(cast, "(s32)") || IS_START(cast, "(u32)")) |
1649 | *bits = 32; |
1650 | else if (IS_START(cast, "(s64)") || IS_START(cast, "(u64)")) |
1651 | *bits = 64; |
1652 | else |
1653 | return -1; |
1654 | |
1655 | *is_signed = cast[1] == 's' ? 1 : 0; |
1656 | return 0; |
1657 | } |
1658 | |
1659 | static int check_deref_cast(const char *cast, int *bits) |
1660 | { |
1661 | if (IS_START(cast, "*(u8 *)")) |
1662 | *bits = 8; |
1663 | else if (IS_START(cast, "*(u16 *)")) |
1664 | *bits = 16; |
1665 | else if (IS_START(cast, "*(u32 *)")) |
1666 | *bits = 32; |
1667 | else if (IS_START(cast, "*(u64 *)")) |
1668 | *bits = 64; |
1669 | else |
1670 | return -1; |
1671 | |
1672 | return 0; |
1673 | } |
1674 | |
a2c1d768 |
1675 | // cast1 is the "final" cast |
1676 | static const char *simplify_cast(const char *cast1, const char *cast2) |
1677 | { |
1678 | static char buf[256]; |
e7f5bc39 |
1679 | int bits1, bits2; |
1680 | int s1, s2; |
a2c1d768 |
1681 | |
1682 | if (cast1[0] == 0) |
1683 | return cast2; |
1684 | if (cast2[0] == 0) |
1685 | return cast1; |
1686 | if (IS(cast1, cast2)) |
1687 | return cast1; |
e7f5bc39 |
1688 | |
1689 | if (check_simple_cast(cast1, &bits1, &s1) == 0 |
1690 | && check_simple_cast(cast2, &bits2, &s2) == 0) |
1691 | { |
1692 | if (bits1 <= bits2) |
1693 | return cast1; |
1694 | } |
1695 | if (check_simple_cast(cast1, &bits1, &s1) == 0 |
1696 | && check_deref_cast(cast2, &bits2) == 0) |
1697 | { |
1698 | if (bits1 == bits2) { |
1699 | snprintf(buf, sizeof(buf), "*(%c%d *)", s1 ? 's' : 'u', bits1); |
1700 | return buf; |
1701 | } |
1702 | } |
1703 | |
1cd4a663 |
1704 | if (strchr(cast1, '*') && IS_START(cast2, "(u32)")) |
1705 | return cast1; |
a2c1d768 |
1706 | |
1707 | snprintf(buf, sizeof(buf), "%s%s", cast1, cast2); |
1708 | return buf; |
1709 | } |
1710 | |
1711 | static const char *simplify_cast_num(const char *cast, unsigned int val) |
1712 | { |
1713 | if (IS(cast, "(u8)") && val < 0x100) |
1714 | return ""; |
1715 | if (IS(cast, "(s8)") && val < 0x80) |
1716 | return ""; |
1717 | if (IS(cast, "(u16)") && val < 0x10000) |
1718 | return ""; |
1719 | if (IS(cast, "(s16)") && val < 0x8000) |
1720 | return ""; |
1721 | if (IS(cast, "(s32)") && val < 0x80000000) |
1722 | return ""; |
1723 | |
1724 | return cast; |
1725 | } |
1726 | |
39b168b8 |
1727 | static struct parsed_equ *equ_find(struct parsed_op *po, const char *name, |
1728 | int *extra_offs) |
91977a1c |
1729 | { |
39b168b8 |
1730 | const char *p; |
1731 | char *endp; |
1732 | int namelen; |
850c9265 |
1733 | int i; |
1734 | |
39b168b8 |
1735 | *extra_offs = 0; |
1736 | namelen = strlen(name); |
1737 | |
1738 | p = strchr(name, '+'); |
1739 | if (p != NULL) { |
1740 | namelen = p - name; |
1741 | if (namelen <= 0) |
1742 | ferr(po, "equ parse failed for '%s'\n", name); |
1743 | |
1744 | if (IS_START(p, "0x")) |
1745 | p += 2; |
1746 | *extra_offs = strtol(p, &endp, 16); |
1747 | if (*endp != 0) |
1748 | ferr(po, "equ parse failed for '%s'\n", name); |
1749 | } |
1750 | |
850c9265 |
1751 | for (i = 0; i < g_eqcnt; i++) |
39b168b8 |
1752 | if (strncmp(g_eqs[i].name, name, namelen) == 0 |
1753 | && g_eqs[i].name[namelen] == 0) |
850c9265 |
1754 | break; |
87bf6cec |
1755 | if (i >= g_eqcnt) { |
1756 | if (po != NULL) |
1757 | ferr(po, "unresolved equ name: '%s'\n", name); |
1758 | return NULL; |
1759 | } |
850c9265 |
1760 | |
1761 | return &g_eqs[i]; |
1762 | } |
1763 | |
1cd4a663 |
1764 | static int is_stack_access(struct parsed_op *po, |
1765 | const struct parsed_opr *popr) |
850c9265 |
1766 | { |
30620174 |
1767 | return (parse_stack_el(popr->name, NULL, NULL, 0) |
1cd4a663 |
1768 | || (g_bp_frame && !(po->flags & OPF_EBP_S) |
1769 | && IS_START(popr->name, "ebp"))); |
1770 | } |
1771 | |
1772 | static void parse_stack_access(struct parsed_op *po, |
1773 | const char *name, char *ofs_reg, int *offset_out, |
037f4971 |
1774 | int *stack_ra_out, const char **bp_arg_out, int is_lea) |
1cd4a663 |
1775 | { |
1776 | const char *bp_arg = ""; |
1777 | const char *p = NULL; |
91977a1c |
1778 | struct parsed_equ *eq; |
4f12f671 |
1779 | char *endp = NULL; |
d4e3b5db |
1780 | int stack_ra = 0; |
39b168b8 |
1781 | int offset = 0; |
91977a1c |
1782 | |
1cd4a663 |
1783 | ofs_reg[0] = 0; |
a3684be1 |
1784 | |
1785 | if (IS_START(name, "ebp-") |
1786 | || (IS_START(name, "ebp+") && '0' <= name[4] && name[4] <= '9')) |
1787 | { |
1788 | p = name + 4; |
1789 | if (IS_START(p, "0x")) |
1790 | p += 2; |
1791 | offset = strtoul(p, &endp, 16); |
1792 | if (name[3] == '-') |
1793 | offset = -offset; |
1794 | if (*endp != 0) |
1795 | ferr(po, "ebp- parse of '%s' failed\n", name); |
1796 | } |
1797 | else { |
30620174 |
1798 | bp_arg = parse_stack_el(name, ofs_reg, NULL, 0); |
4f12f671 |
1799 | eq = equ_find(po, bp_arg, &offset); |
1800 | if (eq == NULL) |
1801 | ferr(po, "detected but missing eq\n"); |
1802 | offset += eq->offset; |
1803 | } |
39b168b8 |
1804 | |
d4e3b5db |
1805 | if (!strncmp(name, "ebp", 3)) |
1806 | stack_ra = 4; |
1807 | |
037f4971 |
1808 | // yes it sometimes LEAs ra for compares.. |
1809 | if (!is_lea && ofs_reg[0] == 0 |
1810 | && stack_ra <= offset && offset < stack_ra + 4) |
1811 | { |
39b168b8 |
1812 | ferr(po, "reference to ra? %d %d\n", offset, stack_ra); |
037f4971 |
1813 | } |
d4e3b5db |
1814 | |
1cd4a663 |
1815 | *offset_out = offset; |
30620174 |
1816 | if (stack_ra_out) |
1817 | *stack_ra_out = stack_ra; |
1cd4a663 |
1818 | if (bp_arg_out) |
1819 | *bp_arg_out = bp_arg; |
1820 | } |
1821 | |
30620174 |
1822 | static int parse_stack_esp_offset(struct parsed_op *po, |
1823 | const char *name, int *offset_out) |
1824 | { |
1825 | char ofs_reg[16] = { 0, }; |
1826 | struct parsed_equ *eq; |
1827 | const char *bp_arg; |
1828 | char *endp = NULL; |
1829 | int base_val = 0; |
1830 | int offset = 0; |
1831 | |
1832 | if (strstr(name, "esp") == NULL) |
1833 | return -1; |
1834 | bp_arg = parse_stack_el(name, ofs_reg, &base_val, 0); |
1835 | if (bp_arg == NULL) { |
1836 | // just plain offset? |
1837 | if (!IS_START(name, "esp+")) |
1838 | return -1; |
1839 | offset = strtol(name + 4, &endp, 0); |
1840 | if (endp == NULL || *endp != 0) |
1841 | return -1; |
1842 | *offset_out = offset; |
1843 | return 0; |
1844 | } |
1845 | |
1846 | if (ofs_reg[0] != 0) |
1847 | return -1; |
1848 | eq = equ_find(po, bp_arg, &offset); |
1849 | if (eq == NULL) |
1850 | ferr(po, "detected but missing eq\n"); |
1851 | offset += eq->offset; |
1852 | *offset_out = base_val + offset; |
1853 | return 0; |
1854 | } |
1855 | |
5f70a34f |
1856 | static int stack_frame_access(struct parsed_op *po, |
1cd4a663 |
1857 | struct parsed_opr *popr, char *buf, size_t buf_size, |
1858 | const char *name, const char *cast, int is_src, int is_lea) |
1859 | { |
1860 | enum opr_lenmod tmp_lmod = OPLM_UNSPEC; |
1861 | const char *prefix = ""; |
1862 | const char *bp_arg = NULL; |
1863 | char ofs_reg[16] = { 0, }; |
1864 | int i, arg_i, arg_s; |
1865 | int unaligned = 0; |
1866 | int stack_ra = 0; |
1867 | int offset = 0; |
5f70a34f |
1868 | int retval = -1; |
1cd4a663 |
1869 | int sf_ofs; |
1870 | int lim; |
1871 | |
1872 | if (po->flags & OPF_EBP_S) |
1873 | ferr(po, "stack_frame_access while ebp is scratch\n"); |
1874 | |
037f4971 |
1875 | parse_stack_access(po, name, ofs_reg, &offset, |
1876 | &stack_ra, &bp_arg, is_lea); |
1cd4a663 |
1877 | |
93b5bd18 |
1878 | snprintf(g_comment, sizeof(g_comment), "%s", bp_arg); |
1879 | |
4f12f671 |
1880 | if (offset > stack_ra) |
1881 | { |
39b168b8 |
1882 | arg_i = (offset - stack_ra - 4) / 4; |
bd96f656 |
1883 | if (arg_i < 0 || arg_i >= g_func_pp->argc_stack) |
4f12f671 |
1884 | { |
bd96f656 |
1885 | if (g_func_pp->is_vararg |
1886 | && arg_i == g_func_pp->argc_stack && is_lea) |
1887 | { |
4f12f671 |
1888 | // should be va_list |
1889 | if (cast[0] == 0) |
1890 | cast = "(u32)"; |
1891 | snprintf(buf, buf_size, "%sap", cast); |
5f70a34f |
1892 | return -1; |
4f12f671 |
1893 | } |
1894 | ferr(po, "offset %d (%s,%d) doesn't map to any arg\n", |
1895 | offset, bp_arg, arg_i); |
1896 | } |
4c45fa73 |
1897 | if (ofs_reg[0] != 0) |
7ba45c34 |
1898 | ferr(po, "offset reg on arg access?\n"); |
91977a1c |
1899 | |
bd96f656 |
1900 | for (i = arg_s = 0; i < g_func_pp->argc; i++) { |
1901 | if (g_func_pp->arg[i].reg != NULL) |
91977a1c |
1902 | continue; |
1903 | if (arg_s == arg_i) |
1904 | break; |
1905 | arg_s++; |
1906 | } |
bd96f656 |
1907 | if (i == g_func_pp->argc) |
91977a1c |
1908 | ferr(po, "arg %d not in prototype?\n", arg_i); |
850c9265 |
1909 | |
bd96f656 |
1910 | popr->is_ptr = g_func_pp->arg[i].type.is_ptr; |
5f70a34f |
1911 | retval = i; |
de50b98b |
1912 | |
1913 | switch (popr->lmod) |
7ba45c34 |
1914 | { |
1915 | case OPLM_BYTE: |
4f12f671 |
1916 | if (is_lea) |
1917 | ferr(po, "lea/byte to arg?\n"); |
7ba45c34 |
1918 | if (is_src && (offset & 3) == 0) |
a2c1d768 |
1919 | snprintf(buf, buf_size, "%sa%d", |
1920 | simplify_cast(cast, "(u8)"), i + 1); |
7ba45c34 |
1921 | else |
a2c1d768 |
1922 | snprintf(buf, buf_size, "%sBYTE%d(a%d)", |
1923 | cast, offset & 3, i + 1); |
7ba45c34 |
1924 | break; |
1925 | |
1926 | case OPLM_WORD: |
4f12f671 |
1927 | if (is_lea) |
1928 | ferr(po, "lea/word to arg?\n"); |
a3684be1 |
1929 | if (offset & 1) { |
1930 | unaligned = 1; |
1931 | if (!is_src) { |
1932 | if (offset & 2) |
1933 | ferr(po, "problematic arg store\n"); |
a2c1d768 |
1934 | snprintf(buf, buf_size, "%s((char *)&a%d + 1)", |
1935 | simplify_cast(cast, "*(u16 *)"), i + 1); |
a3684be1 |
1936 | } |
1937 | else |
1938 | ferr(po, "unaligned arg word load\n"); |
1939 | } |
1940 | else if (is_src && (offset & 2) == 0) |
a2c1d768 |
1941 | snprintf(buf, buf_size, "%sa%d", |
1942 | simplify_cast(cast, "(u16)"), i + 1); |
7ba45c34 |
1943 | else |
a2c1d768 |
1944 | snprintf(buf, buf_size, "%s%sWORD(a%d)", |
1945 | cast, (offset & 2) ? "HI" : "LO", i + 1); |
7ba45c34 |
1946 | break; |
1947 | |
1948 | case OPLM_DWORD: |
3ebea2cf |
1949 | if (cast[0]) |
1950 | prefix = cast; |
1951 | else if (is_src) |
1952 | prefix = "(u32)"; |
a3684be1 |
1953 | |
de50b98b |
1954 | if (offset & 3) { |
a3684be1 |
1955 | unaligned = 1; |
2b43685d |
1956 | if (is_lea) |
1957 | snprintf(buf, buf_size, "(u32)&a%d + %d", |
1958 | i + 1, offset & 3); |
a3684be1 |
1959 | else if (!is_src) |
1960 | ferr(po, "unaligned arg store\n"); |
1961 | else { |
1962 | // mov edx, [ebp+arg_4+2]; movsx ecx, dx |
2b43685d |
1963 | snprintf(buf, buf_size, "%s(a%d >> %d)", |
1964 | prefix, i + 1, (offset & 3) * 8); |
a3684be1 |
1965 | } |
de50b98b |
1966 | } |
1967 | else { |
1968 | snprintf(buf, buf_size, "%s%sa%d", |
1969 | prefix, is_lea ? "&" : "", i + 1); |
1970 | } |
7ba45c34 |
1971 | break; |
1972 | |
1973 | default: |
de50b98b |
1974 | ferr(po, "bp_arg bad lmod: %d\n", popr->lmod); |
7ba45c34 |
1975 | } |
1976 | |
a3684be1 |
1977 | if (unaligned) |
93b5bd18 |
1978 | strcat(g_comment, " unaligned"); |
a3684be1 |
1979 | |
7ba45c34 |
1980 | // common problem |
bd96f656 |
1981 | guess_lmod_from_c_type(&tmp_lmod, &g_func_pp->arg[i].type); |
a2c1d768 |
1982 | if (tmp_lmod != OPLM_DWORD |
de041e5b |
1983 | && (unaligned || (!is_src && lmod_bytes(po, tmp_lmod) |
1984 | < lmod_bytes(po, popr->lmod) + (offset & 3)))) |
a2c1d768 |
1985 | { |
1986 | ferr(po, "bp_arg arg%d/w offset %d and type '%s' is too small\n", |
1987 | i + 1, offset, g_func_pp->arg[i].type.name); |
1988 | } |
4741fdfe |
1989 | // can't check this because msvc likes to reuse |
1990 | // arg space for scratch.. |
1991 | //if (popr->is_ptr && popr->lmod != OPLM_DWORD) |
1992 | // ferr(po, "bp_arg arg%d: non-dword ptr access\n", i + 1); |
91977a1c |
1993 | } |
4f12f671 |
1994 | else |
1995 | { |
1bafb621 |
1996 | if (g_stack_fsz == 0) |
1997 | ferr(po, "stack var access without stackframe\n"); |
a2c1d768 |
1998 | g_stack_frame_used = 1; |
850c9265 |
1999 | |
39b168b8 |
2000 | sf_ofs = g_stack_fsz + offset; |
de50b98b |
2001 | lim = (ofs_reg[0] != 0) ? -4 : 0; |
2002 | if (offset > 0 || sf_ofs < lim) |
39b168b8 |
2003 | ferr(po, "bp_stack offset %d/%d\n", offset, g_stack_fsz); |
850c9265 |
2004 | |
2005 | if (is_lea) |
33c35af6 |
2006 | prefix = "(u32)&"; |
3ebea2cf |
2007 | else |
2008 | prefix = cast; |
850c9265 |
2009 | |
de50b98b |
2010 | switch (popr->lmod) |
850c9265 |
2011 | { |
2012 | case OPLM_BYTE: |
7ba45c34 |
2013 | snprintf(buf, buf_size, "%ssf.b[%d%s%s]", |
2014 | prefix, sf_ofs, ofs_reg[0] ? "+" : "", ofs_reg); |
850c9265 |
2015 | break; |
7ba45c34 |
2016 | |
850c9265 |
2017 | case OPLM_WORD: |
7ba45c34 |
2018 | if ((sf_ofs & 1) || ofs_reg[0] != 0) { |
2019 | // known unaligned or possibly unaligned |
2020 | strcat(g_comment, " unaligned"); |
2021 | if (prefix[0] == 0) |
2022 | prefix = "*(u16 *)&"; |
2023 | snprintf(buf, buf_size, "%ssf.b[%d%s%s]", |
2024 | prefix, sf_ofs, ofs_reg[0] ? "+" : "", ofs_reg); |
2025 | break; |
2026 | } |
2027 | snprintf(buf, buf_size, "%ssf.w[%d]", prefix, sf_ofs / 2); |
850c9265 |
2028 | break; |
7ba45c34 |
2029 | |
850c9265 |
2030 | case OPLM_DWORD: |
7ba45c34 |
2031 | if ((sf_ofs & 3) || ofs_reg[0] != 0) { |
2032 | // known unaligned or possibly unaligned |
2033 | strcat(g_comment, " unaligned"); |
2034 | if (prefix[0] == 0) |
2035 | prefix = "*(u32 *)&"; |
2036 | snprintf(buf, buf_size, "%ssf.b[%d%s%s]", |
2037 | prefix, sf_ofs, ofs_reg[0] ? "+" : "", ofs_reg); |
2038 | break; |
2039 | } |
2040 | snprintf(buf, buf_size, "%ssf.d[%d]", prefix, sf_ofs / 4); |
850c9265 |
2041 | break; |
7ba45c34 |
2042 | |
d4a985bd |
2043 | case OPLM_QWORD: |
2044 | ferr_assert(po, !(sf_ofs & 7)); |
2045 | ferr_assert(po, ofs_reg[0] == 0); |
8c83cc48 |
2046 | // only used for x87 int64/float, float sets is_lea |
2047 | if (is_lea) |
2048 | snprintf(buf, buf_size, "%ssf.q[%d]", prefix, sf_ofs / 8); |
2049 | else |
2050 | snprintf(buf, buf_size, "*(s64 *)&sf.q[%d]", sf_ofs / 8); |
d4a985bd |
2051 | break; |
2052 | |
850c9265 |
2053 | default: |
de50b98b |
2054 | ferr(po, "bp_stack bad lmod: %d\n", popr->lmod); |
850c9265 |
2055 | } |
91977a1c |
2056 | } |
5f70a34f |
2057 | |
2058 | return retval; |
91977a1c |
2059 | } |
c36e914d |
2060 | |
89ff3147 |
2061 | static void check_func_pp(struct parsed_op *po, |
2062 | const struct parsed_proto *pp, const char *pfx) |
2063 | { |
179b79a9 |
2064 | enum opr_lenmod tmp_lmod; |
b74c31e3 |
2065 | char buf[256]; |
179b79a9 |
2066 | int ret, i; |
b74c31e3 |
2067 | |
89ff3147 |
2068 | if (pp->argc_reg != 0) { |
8c83cc48 |
2069 | if (!g_allow_user_icall && !pp->is_fastcall) { |
b74c31e3 |
2070 | pp_print(buf, sizeof(buf), pp); |
2071 | ferr(po, "%s: unexpected reg arg in icall: %s\n", pfx, buf); |
2072 | } |
89ff3147 |
2073 | if (pp->argc_stack > 0 && pp->argc_reg != 2) |
2074 | ferr(po, "%s: %d reg arg(s) with %d stack arg(s)\n", |
2075 | pfx, pp->argc_reg, pp->argc_stack); |
2076 | } |
179b79a9 |
2077 | |
2078 | // fptrs must use 32bit args, callsite might have no information and |
2079 | // lack a cast to smaller types, which results in incorrectly masked |
2080 | // args passed (callee may assume masked args, it does on ARM) |
61e29183 |
2081 | if (!pp->is_osinc) { |
179b79a9 |
2082 | for (i = 0; i < pp->argc; i++) { |
2083 | ret = guess_lmod_from_c_type(&tmp_lmod, &pp->arg[i].type); |
2084 | if (ret && tmp_lmod != OPLM_DWORD) |
2085 | ferr(po, "reference to %s with arg%d '%s'\n", pp->name, |
2086 | i + 1, pp->arg[i].type.name); |
2087 | } |
2088 | } |
89ff3147 |
2089 | } |
2090 | |
7aca4698 |
2091 | static const char *check_label_read_ref(struct parsed_op *po, |
2092 | const char *name) |
3ebea2cf |
2093 | { |
840257f6 |
2094 | const struct parsed_proto *pp; |
2095 | |
36595fd2 |
2096 | pp = proto_parse(g_fhdr, name, 0); |
840257f6 |
2097 | if (pp == NULL) |
2098 | ferr(po, "proto_parse failed for ref '%s'\n", name); |
2099 | |
89ff3147 |
2100 | if (pp->is_func) |
2101 | check_func_pp(po, pp, "ref"); |
7aca4698 |
2102 | |
2103 | return pp->name; |
3ebea2cf |
2104 | } |
2105 | |
91977a1c |
2106 | static char *out_src_opr(char *buf, size_t buf_size, |
591721d7 |
2107 | struct parsed_op *po, struct parsed_opr *popr, const char *cast, |
3ebea2cf |
2108 | int is_lea) |
91977a1c |
2109 | { |
850c9265 |
2110 | char tmp1[256], tmp2[256]; |
2111 | char expr[256]; |
7aca4698 |
2112 | const char *name; |
a2c1d768 |
2113 | char *p; |
850c9265 |
2114 | int ret; |
2115 | |
3ebea2cf |
2116 | if (cast == NULL) |
2117 | cast = ""; |
2118 | |
91977a1c |
2119 | switch (popr->type) { |
2120 | case OPT_REG: |
850c9265 |
2121 | if (is_lea) |
2122 | ferr(po, "lea from reg?\n"); |
2123 | |
91977a1c |
2124 | switch (popr->lmod) { |
90307a99 |
2125 | case OPLM_QWORD: |
2126 | snprintf(buf, buf_size, "%s%s.q", cast, opr_reg_p(po, popr)); |
2127 | break; |
91977a1c |
2128 | case OPLM_DWORD: |
3ebea2cf |
2129 | snprintf(buf, buf_size, "%s%s", cast, opr_reg_p(po, popr)); |
91977a1c |
2130 | break; |
850c9265 |
2131 | case OPLM_WORD: |
a2c1d768 |
2132 | snprintf(buf, buf_size, "%s%s", |
2133 | simplify_cast(cast, "(u16)"), opr_reg_p(po, popr)); |
850c9265 |
2134 | break; |
2135 | case OPLM_BYTE: |
5101a5f9 |
2136 | if (popr->name[1] == 'h') // XXX.. |
a2c1d768 |
2137 | snprintf(buf, buf_size, "%s(%s >> 8)", |
2138 | simplify_cast(cast, "(u8)"), opr_reg_p(po, popr)); |
5101a5f9 |
2139 | else |
a2c1d768 |
2140 | snprintf(buf, buf_size, "%s%s", |
2141 | simplify_cast(cast, "(u8)"), opr_reg_p(po, popr)); |
850c9265 |
2142 | break; |
91977a1c |
2143 | default: |
2144 | ferr(po, "invalid src lmod: %d\n", popr->lmod); |
2145 | } |
2146 | break; |
850c9265 |
2147 | |
91977a1c |
2148 | case OPT_REGMEM: |
1cd4a663 |
2149 | if (is_stack_access(po, popr)) { |
de50b98b |
2150 | stack_frame_access(po, popr, buf, buf_size, |
3ebea2cf |
2151 | popr->name, cast, 1, is_lea); |
91977a1c |
2152 | break; |
2153 | } |
850c9265 |
2154 | |
2155 | strcpy(expr, popr->name); |
2156 | if (strchr(expr, '[')) { |
2157 | // special case: '[' can only be left for label[reg] form |
2158 | ret = sscanf(expr, "%[^[][%[^]]]", tmp1, tmp2); |
2159 | if (ret != 2) |
2160 | ferr(po, "parse failure for '%s'\n", expr); |
a2c1d768 |
2161 | if (tmp1[0] == '(') { |
2162 | // (off_4FFF50+3)[eax] |
2163 | p = strchr(tmp1 + 1, ')'); |
2164 | if (p == NULL || p[1] != 0) |
2165 | ferr(po, "parse failure (2) for '%s'\n", expr); |
2166 | *p = 0; |
2167 | memmove(tmp1, tmp1 + 1, strlen(tmp1)); |
2168 | } |
33c35af6 |
2169 | snprintf(expr, sizeof(expr), "(u32)&%s + %s", tmp1, tmp2); |
850c9265 |
2170 | } |
2171 | |
2172 | // XXX: do we need more parsing? |
2173 | if (is_lea) { |
2174 | snprintf(buf, buf_size, "%s", expr); |
2175 | break; |
2176 | } |
2177 | |
a2c1d768 |
2178 | snprintf(buf, buf_size, "%s(%s)", |
2179 | simplify_cast(cast, lmod_cast_u_ptr(po, popr->lmod)), expr); |
91977a1c |
2180 | break; |
850c9265 |
2181 | |
91977a1c |
2182 | case OPT_LABEL: |
7aca4698 |
2183 | name = check_label_read_ref(po, popr->name); |
3ebea2cf |
2184 | if (cast[0] == 0 && popr->is_ptr) |
2185 | cast = "(u32)"; |
2b43685d |
2186 | |
850c9265 |
2187 | if (is_lea) |
7aca4698 |
2188 | snprintf(buf, buf_size, "(u32)&%s", name); |
2b43685d |
2189 | else if (popr->size_lt) |
2190 | snprintf(buf, buf_size, "%s%s%s%s", cast, |
2191 | lmod_cast_u_ptr(po, popr->lmod), |
7aca4698 |
2192 | popr->is_array ? "" : "&", name); |
850c9265 |
2193 | else |
7aca4698 |
2194 | snprintf(buf, buf_size, "%s%s%s", cast, name, |
7ba45c34 |
2195 | popr->is_array ? "[0]" : ""); |
850c9265 |
2196 | break; |
2197 | |
2198 | case OPT_OFFSET: |
7aca4698 |
2199 | name = check_label_read_ref(po, popr->name); |
3ebea2cf |
2200 | if (cast[0] == 0) |
2201 | cast = "(u32)"; |
850c9265 |
2202 | if (is_lea) |
2203 | ferr(po, "lea an offset?\n"); |
7aca4698 |
2204 | snprintf(buf, buf_size, "%s&%s", cast, name); |
91977a1c |
2205 | break; |
850c9265 |
2206 | |
91977a1c |
2207 | case OPT_CONST: |
850c9265 |
2208 | if (is_lea) |
2209 | ferr(po, "lea from const?\n"); |
2210 | |
a2c1d768 |
2211 | printf_number(tmp1, sizeof(tmp1), popr->val); |
ddaf8bd7 |
2212 | if (popr->val == 0 && strchr(cast, '*')) |
2213 | snprintf(buf, buf_size, "NULL"); |
2214 | else |
2215 | snprintf(buf, buf_size, "%s%s", |
2216 | simplify_cast_num(cast, popr->val), tmp1); |
91977a1c |
2217 | break; |
850c9265 |
2218 | |
91977a1c |
2219 | default: |
2220 | ferr(po, "invalid src type: %d\n", popr->type); |
2221 | } |
2222 | |
2223 | return buf; |
2224 | } |
c36e914d |
2225 | |
de50b98b |
2226 | // note: may set is_ptr (we find that out late for ebp frame..) |
91977a1c |
2227 | static char *out_dst_opr(char *buf, size_t buf_size, |
2228 | struct parsed_op *po, struct parsed_opr *popr) |
2229 | { |
2230 | switch (popr->type) { |
2231 | case OPT_REG: |
2232 | switch (popr->lmod) { |
90307a99 |
2233 | case OPLM_QWORD: |
2234 | snprintf(buf, buf_size, "%s.q", opr_reg_p(po, popr)); |
2235 | break; |
91977a1c |
2236 | case OPLM_DWORD: |
2237 | snprintf(buf, buf_size, "%s", opr_reg_p(po, popr)); |
2238 | break; |
850c9265 |
2239 | case OPLM_WORD: |
2240 | // ugh.. |
2241 | snprintf(buf, buf_size, "LOWORD(%s)", opr_reg_p(po, popr)); |
2242 | break; |
2243 | case OPLM_BYTE: |
2244 | // ugh.. |
5101a5f9 |
2245 | if (popr->name[1] == 'h') // XXX.. |
2246 | snprintf(buf, buf_size, "BYTE1(%s)", opr_reg_p(po, popr)); |
2247 | else |
2248 | snprintf(buf, buf_size, "LOBYTE(%s)", opr_reg_p(po, popr)); |
850c9265 |
2249 | break; |
91977a1c |
2250 | default: |
2251 | ferr(po, "invalid dst lmod: %d\n", popr->lmod); |
2252 | } |
2253 | break; |
850c9265 |
2254 | |
2255 | case OPT_REGMEM: |
1cd4a663 |
2256 | if (is_stack_access(po, popr)) { |
de50b98b |
2257 | stack_frame_access(po, popr, buf, buf_size, |
3ebea2cf |
2258 | popr->name, "", 0, 0); |
850c9265 |
2259 | break; |
2260 | } |
2261 | |
3ebea2cf |
2262 | return out_src_opr(buf, buf_size, po, popr, NULL, 0); |
850c9265 |
2263 | |
bfa4a6ee |
2264 | case OPT_LABEL: |
2b43685d |
2265 | if (popr->size_mismatch) |
2266 | snprintf(buf, buf_size, "%s%s%s", |
2267 | lmod_cast_u_ptr(po, popr->lmod), |
2268 | popr->is_array ? "" : "&", popr->name); |
2269 | else |
2270 | snprintf(buf, buf_size, "%s%s", popr->name, |
2271 | popr->is_array ? "[0]" : ""); |
bfa4a6ee |
2272 | break; |
2273 | |
91977a1c |
2274 | default: |
2275 | ferr(po, "invalid dst type: %d\n", popr->type); |
2276 | } |
2277 | |
2278 | return buf; |
2279 | } |
c36e914d |
2280 | |
3ebea2cf |
2281 | static char *out_src_opr_u32(char *buf, size_t buf_size, |
2282 | struct parsed_op *po, struct parsed_opr *popr) |
2283 | { |
2284 | return out_src_opr(buf, buf_size, po, popr, NULL, 0); |
2285 | } |
2286 | |
d4a985bd |
2287 | static char *out_src_opr_float(char *buf, size_t buf_size, |
fe18df39 |
2288 | struct parsed_op *po, struct parsed_opr *popr, int need_float_stack) |
d4a985bd |
2289 | { |
2290 | const char *cast = NULL; |
2291 | char tmp[256]; |
2292 | |
2293 | switch (popr->type) { |
2294 | case OPT_REG: |
2295 | if (popr->reg < xST0 || popr->reg > xST7) |
2296 | ferr(po, "bad reg: %d\n", popr->reg); |
2297 | |
fe18df39 |
2298 | if (need_float_stack) { |
2299 | if (popr->reg == xST0) |
2300 | snprintf(buf, buf_size, "f_st[f_stp & 7]"); |
2301 | else |
2302 | snprintf(buf, buf_size, "f_st[(f_stp + %d) & 7]", |
2303 | popr->reg - xST0); |
2304 | } |
2305 | else |
2306 | snprintf(buf, buf_size, "f_st%d", popr->reg - xST0); |
d4a985bd |
2307 | break; |
2308 | |
2309 | case OPT_REGMEM: |
2310 | case OPT_LABEL: |
2311 | case OPT_OFFSET: |
2312 | switch (popr->lmod) { |
2313 | case OPLM_QWORD: |
2314 | cast = "double"; |
2315 | break; |
2316 | case OPLM_DWORD: |
2317 | cast = "float"; |
2318 | break; |
2319 | default: |
2320 | ferr(po, "unhandled lmod: %d\n", popr->lmod); |
2321 | break; |
2322 | } |
2323 | out_src_opr(tmp, sizeof(tmp), po, popr, "", 1); |
11437ea1 |
2324 | snprintf(buf, buf_size, "*(%s *)(%s)", cast, tmp); |
d4a985bd |
2325 | break; |
2326 | |
2327 | default: |
2328 | ferr(po, "invalid float type: %d\n", popr->type); |
2329 | } |
2330 | |
2331 | return buf; |
2332 | } |
2333 | |
2334 | static char *out_dst_opr_float(char *buf, size_t buf_size, |
fe18df39 |
2335 | struct parsed_op *po, struct parsed_opr *popr, int need_float_stack) |
d4a985bd |
2336 | { |
2337 | // same? |
fe18df39 |
2338 | return out_src_opr_float(buf, buf_size, po, popr, need_float_stack); |
d4a985bd |
2339 | } |
2340 | |
91977a1c |
2341 | static void out_test_for_cc(char *buf, size_t buf_size, |
940e8e66 |
2342 | struct parsed_op *po, enum parsed_flag_op pfo, int is_inv, |
69a3cdfc |
2343 | enum opr_lenmod lmod, const char *expr) |
91977a1c |
2344 | { |
69a3cdfc |
2345 | const char *cast, *scast; |
91977a1c |
2346 | |
69a3cdfc |
2347 | cast = lmod_cast_u(po, lmod); |
2348 | scast = lmod_cast_s(po, lmod); |
2349 | |
2350 | switch (pfo) { |
2351 | case PFO_Z: |
8c83cc48 |
2352 | case PFO_BE: // CF==1||ZF==1; CF=0 |
850c9265 |
2353 | snprintf(buf, buf_size, "(%s%s %s 0)", |
940e8e66 |
2354 | cast, expr, is_inv ? "!=" : "=="); |
91977a1c |
2355 | break; |
850c9265 |
2356 | |
5101a5f9 |
2357 | case PFO_S: |
2358 | case PFO_L: // SF!=OF; OF=0 |
2359 | snprintf(buf, buf_size, "(%s%s %s 0)", |
940e8e66 |
2360 | scast, expr, is_inv ? ">=" : "<"); |
5101a5f9 |
2361 | break; |
2362 | |
8c83cc48 |
2363 | case PFO_LE: // ZF==1||SF!=OF; OF=0 |
69a3cdfc |
2364 | snprintf(buf, buf_size, "(%s%s %s 0)", |
940e8e66 |
2365 | scast, expr, is_inv ? ">" : "<="); |
850c9265 |
2366 | break; |
2367 | |
8c83cc48 |
2368 | case PFO_C: // CF=0 |
2369 | case PFO_O: // OF=0 |
2370 | snprintf(buf, buf_size, "(%d)", !!is_inv); |
2371 | break; |
2372 | |
91977a1c |
2373 | default: |
69a3cdfc |
2374 | ferr(po, "%s: unhandled parsed_flag_op: %d\n", __func__, pfo); |
91977a1c |
2375 | } |
2376 | } |
c36e914d |
2377 | |
850c9265 |
2378 | static void out_cmp_for_cc(char *buf, size_t buf_size, |
16057ce1 |
2379 | struct parsed_op *po, enum parsed_flag_op pfo, int is_inv, |
2380 | int is_neg) |
850c9265 |
2381 | { |
a2c1d768 |
2382 | const char *cast, *scast, *cast_use; |
2383 | char buf1[256], buf2[256]; |
2384 | enum opr_lenmod lmod; |
2385 | |
90307a99 |
2386 | if (po->op != OP_DEC && po->operand[0].lmod != po->operand[1].lmod) |
a2c1d768 |
2387 | ferr(po, "%s: lmod mismatch: %d %d\n", __func__, |
2388 | po->operand[0].lmod, po->operand[1].lmod); |
2389 | lmod = po->operand[0].lmod; |
850c9265 |
2390 | |
69a3cdfc |
2391 | cast = lmod_cast_u(po, lmod); |
2392 | scast = lmod_cast_s(po, lmod); |
850c9265 |
2393 | |
a2c1d768 |
2394 | switch (pfo) { |
2395 | case PFO_C: |
2396 | case PFO_Z: |
2397 | case PFO_BE: // !a |
2398 | cast_use = cast; |
2399 | break; |
2400 | |
2401 | case PFO_S: |
2402 | case PFO_L: // !ge |
2403 | case PFO_LE: |
2404 | cast_use = scast; |
2405 | break; |
2406 | |
2407 | default: |
2408 | ferr(po, "%s: unhandled parsed_flag_op: %d\n", __func__, pfo); |
2409 | } |
2410 | |
2411 | out_src_opr(buf1, sizeof(buf1), po, &po->operand[0], cast_use, 0); |
90307a99 |
2412 | if (po->op == OP_DEC) |
2413 | snprintf(buf2, sizeof(buf2), "1"); |
16057ce1 |
2414 | else { |
2415 | char cast_op2[64]; |
2416 | snprintf(cast_op2, sizeof(cast_op2) - 1, "%s", cast_use); |
2417 | if (is_neg) |
2418 | strcat(cast_op2, "-"); |
2419 | out_src_opr(buf2, sizeof(buf2), po, &po->operand[1], cast_op2, 0); |
2420 | } |
a2c1d768 |
2421 | |
69a3cdfc |
2422 | switch (pfo) { |
5101a5f9 |
2423 | case PFO_C: |
2424 | // note: must be unsigned compare |
a2c1d768 |
2425 | snprintf(buf, buf_size, "(%s %s %s)", |
2426 | buf1, is_inv ? ">=" : "<", buf2); |
5101a5f9 |
2427 | break; |
2428 | |
69a3cdfc |
2429 | case PFO_Z: |
a2c1d768 |
2430 | snprintf(buf, buf_size, "(%s %s %s)", |
2431 | buf1, is_inv ? "!=" : "==", buf2); |
850c9265 |
2432 | break; |
2433 | |
5101a5f9 |
2434 | case PFO_BE: // !a |
850c9265 |
2435 | // note: must be unsigned compare |
a2c1d768 |
2436 | snprintf(buf, buf_size, "(%s %s %s)", |
2437 | buf1, is_inv ? ">" : "<=", buf2); |
2438 | |
2439 | // annoying case |
2440 | if (is_inv && lmod == OPLM_BYTE |
2441 | && po->operand[1].type == OPT_CONST |
2442 | && po->operand[1].val == 0xff) |
2443 | { |
2444 | snprintf(g_comment, sizeof(g_comment), "if %s", buf); |
2445 | snprintf(buf, buf_size, "(0)"); |
2446 | } |
5101a5f9 |
2447 | break; |
2448 | |
2449 | // note: must be signed compare |
2450 | case PFO_S: |
2451 | snprintf(buf, buf_size, "(%s(%s - %s) %s 0)", |
a2c1d768 |
2452 | scast, buf1, buf2, is_inv ? ">=" : "<"); |
850c9265 |
2453 | break; |
2454 | |
5101a5f9 |
2455 | case PFO_L: // !ge |
a2c1d768 |
2456 | snprintf(buf, buf_size, "(%s %s %s)", |
2457 | buf1, is_inv ? ">=" : "<", buf2); |
850c9265 |
2458 | break; |
2459 | |
90307a99 |
2460 | case PFO_LE: // !g |
a2c1d768 |
2461 | snprintf(buf, buf_size, "(%s %s %s)", |
2462 | buf1, is_inv ? ">" : "<=", buf2); |
5101a5f9 |
2463 | break; |
2464 | |
850c9265 |
2465 | default: |
a2c1d768 |
2466 | break; |
850c9265 |
2467 | } |
2468 | } |
2469 | |
69a3cdfc |
2470 | static void out_cmp_test(char *buf, size_t buf_size, |
940e8e66 |
2471 | struct parsed_op *po, enum parsed_flag_op pfo, int is_inv) |
69a3cdfc |
2472 | { |
2473 | char buf1[256], buf2[256], buf3[256]; |
2474 | |
2475 | if (po->op == OP_TEST) { |
2476 | if (IS(opr_name(po, 0), opr_name(po, 1))) { |
3ebea2cf |
2477 | out_src_opr_u32(buf3, sizeof(buf3), po, &po->operand[0]); |
69a3cdfc |
2478 | } |
2479 | else { |
3ebea2cf |
2480 | out_src_opr_u32(buf1, sizeof(buf1), po, &po->operand[0]); |
2481 | out_src_opr_u32(buf2, sizeof(buf2), po, &po->operand[1]); |
69a3cdfc |
2482 | snprintf(buf3, sizeof(buf3), "(%s & %s)", buf1, buf2); |
2483 | } |
940e8e66 |
2484 | out_test_for_cc(buf, buf_size, po, pfo, is_inv, |
69a3cdfc |
2485 | po->operand[0].lmod, buf3); |
2486 | } |
2487 | else if (po->op == OP_CMP) { |
16057ce1 |
2488 | out_cmp_for_cc(buf, buf_size, po, pfo, is_inv, 0); |
69a3cdfc |
2489 | } |
2490 | else |
2491 | ferr(po, "%s: unhandled op: %d\n", __func__, po->op); |
2492 | } |
2493 | |
850c9265 |
2494 | static void propagate_lmod(struct parsed_op *po, struct parsed_opr *popr1, |
91977a1c |
2495 | struct parsed_opr *popr2) |
2496 | { |
2497 | if (popr1->lmod == OPLM_UNSPEC && popr2->lmod == OPLM_UNSPEC) |
2498 | ferr(po, "missing lmod for both operands\n"); |
2499 | |
2500 | if (popr1->lmod == OPLM_UNSPEC) |
2501 | popr1->lmod = popr2->lmod; |
2502 | else if (popr2->lmod == OPLM_UNSPEC) |
2503 | popr2->lmod = popr1->lmod; |
a3684be1 |
2504 | else if (popr1->lmod != popr2->lmod) { |
2505 | if (popr1->type_from_var) { |
2506 | popr1->size_mismatch = 1; |
2507 | if (popr1->lmod < popr2->lmod) |
2508 | popr1->size_lt = 1; |
2509 | popr1->lmod = popr2->lmod; |
2510 | } |
2511 | else if (popr2->type_from_var) { |
2512 | popr2->size_mismatch = 1; |
2513 | if (popr2->lmod < popr1->lmod) |
2514 | popr2->size_lt = 1; |
2515 | popr2->lmod = popr1->lmod; |
2516 | } |
2517 | else |
2518 | ferr(po, "conflicting lmods: %d vs %d\n", |
2519 | popr1->lmod, popr2->lmod); |
2520 | } |
91977a1c |
2521 | } |
c36e914d |
2522 | |
850c9265 |
2523 | static const char *op_to_c(struct parsed_op *po) |
2524 | { |
2525 | switch (po->op) |
2526 | { |
2527 | case OP_ADD: |
5101a5f9 |
2528 | case OP_ADC: |
850c9265 |
2529 | return "+"; |
2530 | case OP_SUB: |
5101a5f9 |
2531 | case OP_SBB: |
850c9265 |
2532 | return "-"; |
2533 | case OP_AND: |
2534 | return "&"; |
2535 | case OP_OR: |
2536 | return "|"; |
2537 | case OP_XOR: |
2538 | return "^"; |
2539 | case OP_SHL: |
2540 | return "<<"; |
2541 | case OP_SHR: |
2542 | return ">>"; |
2543 | case OP_MUL: |
2544 | case OP_IMUL: |
2545 | return "*"; |
2546 | default: |
2547 | ferr(po, "op_to_c was supplied with %d\n", po->op); |
2548 | } |
2549 | } |
2550 | |
de50b98b |
2551 | // last op in stream - unconditional branch or ret |
2552 | #define LAST_OP(_i) ((ops[_i].flags & OPF_TAIL) \ |
092f64e1 |
2553 | || ((ops[_i].flags & (OPF_JMP|OPF_CJMP|OPF_RMD)) == OPF_JMP \ |
037f4971 |
2554 | && ops[_i].op != OP_CALL)) |
de50b98b |
2555 | |
db63af51 |
2556 | #define check_i(po, i) \ |
2557 | if ((i) < 0) \ |
2558 | ferr(po, "bad " #i ": %d\n", i) |
2559 | |
e83ea7ed |
2560 | // note: this skips over calls and rm'd stuff assuming they're handled |
2561 | // so it's intended to use at one of final passes |
2562 | static int scan_for_pop(int i, int opcnt, int magic, int reg, |
93b5bd18 |
2563 | int depth, int seen_noreturn, int flags_set) |
850c9265 |
2564 | { |
87bf6cec |
2565 | struct parsed_op *po; |
e83ea7ed |
2566 | int relevant; |
87bf6cec |
2567 | int ret = 0; |
4c45fa73 |
2568 | int j; |
87bf6cec |
2569 | |
850c9265 |
2570 | for (; i < opcnt; i++) { |
87bf6cec |
2571 | po = &ops[i]; |
2572 | if (po->cc_scratch == magic) |
b2bd20c0 |
2573 | return ret; // already checked |
87bf6cec |
2574 | po->cc_scratch = magic; |
2575 | |
89ff3147 |
2576 | if (po->flags & OPF_TAIL) { |
2577 | if (po->op == OP_CALL) { |
b2bd20c0 |
2578 | if (po->pp != NULL && po->pp->is_noreturn) |
93b5bd18 |
2579 | seen_noreturn = 1; |
2580 | else |
2581 | return -1; |
89ff3147 |
2582 | } |
93b5bd18 |
2583 | else |
2584 | return -1; // deadend |
89ff3147 |
2585 | } |
87bf6cec |
2586 | |
e83ea7ed |
2587 | if (po->flags & (OPF_RMD|OPF_DONE|OPF_FARG)) |
850c9265 |
2588 | continue; |
2589 | |
87bf6cec |
2590 | if ((po->flags & OPF_JMP) && po->op != OP_CALL) { |
4c45fa73 |
2591 | if (po->btj != NULL) { |
2592 | // jumptable |
da87ae38 |
2593 | for (j = 0; j < po->btj->count; j++) { |
db63af51 |
2594 | check_i(po, po->btj->d[j].bt_i); |
e83ea7ed |
2595 | ret |= scan_for_pop(po->btj->d[j].bt_i, opcnt, magic, reg, |
93b5bd18 |
2596 | depth, seen_noreturn, flags_set); |
4c45fa73 |
2597 | if (ret < 0) |
2598 | return ret; // dead end |
2599 | } |
da87ae38 |
2600 | return ret; |
4c45fa73 |
2601 | } |
2602 | |
db63af51 |
2603 | check_i(po, po->bt_i); |
5c024ef7 |
2604 | if (po->flags & OPF_CJMP) { |
e83ea7ed |
2605 | ret |= scan_for_pop(po->bt_i, opcnt, magic, reg, |
93b5bd18 |
2606 | depth, seen_noreturn, flags_set); |
87bf6cec |
2607 | if (ret < 0) |
2608 | return ret; // dead end |
2609 | } |
2610 | else { |
2611 | i = po->bt_i - 1; |
2612 | } |
2613 | continue; |
2614 | } |
2615 | |
e83ea7ed |
2616 | relevant = 0; |
d4e3b5db |
2617 | if ((po->op == OP_POP || po->op == OP_PUSH) |
e83ea7ed |
2618 | && po->operand[0].type == OPT_REG && po->operand[0].reg == reg) |
87bf6cec |
2619 | { |
e83ea7ed |
2620 | relevant = 1; |
2621 | } |
2622 | |
2623 | if (po->op == OP_PUSH) { |
2624 | depth++; |
e83ea7ed |
2625 | } |
2626 | else if (po->op == OP_POP) { |
b2bd20c0 |
2627 | if (relevant && depth == 0) { |
2628 | po->flags |= flags_set; |
e83ea7ed |
2629 | return 1; |
2630 | } |
b2bd20c0 |
2631 | depth--; |
87bf6cec |
2632 | } |
850c9265 |
2633 | } |
2634 | |
93b5bd18 |
2635 | // for noreturn, assume msvc skipped stack cleanup |
2636 | return seen_noreturn ? 1 : -1; |
850c9265 |
2637 | } |
2638 | |
e83ea7ed |
2639 | // scan for 'reg' pop backwards starting from i |
2640 | // intended to use for register restore search, so other reg |
2641 | // references are considered an error |
2642 | static int scan_for_rsave_pop_reg(int i, int magic, int reg, int set_flags) |
850c9265 |
2643 | { |
e83ea7ed |
2644 | struct parsed_op *po; |
2645 | struct label_ref *lr; |
2646 | int ret = 0; |
2647 | |
2648 | ops[i].cc_scratch = magic; |
2649 | |
2650 | while (1) |
2651 | { |
2652 | if (g_labels[i] != NULL) { |
2653 | lr = &g_label_refs[i]; |
2654 | for (; lr != NULL; lr = lr->next) { |
2655 | check_i(&ops[i], lr->i); |
2656 | ret |= scan_for_rsave_pop_reg(lr->i, magic, reg, set_flags); |
2657 | if (ret < 0) |
2658 | return ret; |
2659 | } |
2660 | if (i > 0 && LAST_OP(i - 1)) |
2661 | return ret; |
2662 | } |
2663 | |
2664 | i--; |
2665 | if (i < 0) |
2666 | break; |
2667 | |
2668 | if (ops[i].cc_scratch == magic) |
2669 | return ret; |
2670 | ops[i].cc_scratch = magic; |
2671 | |
2672 | po = &ops[i]; |
2673 | if (po->op == OP_POP && po->operand[0].reg == reg) { |
2674 | if (po->flags & (OPF_RMD|OPF_DONE)) |
2675 | return -1; |
2676 | |
2677 | po->flags |= set_flags; |
2678 | return 1; |
2679 | } |
2680 | |
2681 | // this also covers the case where we reach corresponding push |
2682 | if ((po->regmask_dst | po->regmask_src) & (1 << reg)) |
2683 | return -1; |
2684 | } |
2685 | |
2686 | // nothing interesting on this path |
2687 | return 0; |
2688 | } |
2689 | |
2690 | static void find_reachable_exits(int i, int opcnt, int magic, |
2691 | int *exits, int *exit_count) |
2692 | { |
2693 | struct parsed_op *po; |
850c9265 |
2694 | int j; |
2695 | |
e83ea7ed |
2696 | for (; i < opcnt; i++) |
2697 | { |
2698 | po = &ops[i]; |
2699 | if (po->cc_scratch == magic) |
2700 | return; |
2701 | po->cc_scratch = magic; |
2702 | |
2703 | if (po->flags & OPF_TAIL) { |
2704 | ferr_assert(po, *exit_count < MAX_EXITS); |
2705 | exits[*exit_count] = i; |
2706 | (*exit_count)++; |
2707 | return; |
2708 | } |
850c9265 |
2709 | |
e83ea7ed |
2710 | if ((po->flags & OPF_JMP) && po->op != OP_CALL) { |
2711 | if (po->flags & OPF_RMD) |
69a3cdfc |
2712 | continue; |
850c9265 |
2713 | |
e83ea7ed |
2714 | if (po->btj != NULL) { |
2715 | for (j = 0; j < po->btj->count; j++) { |
2716 | check_i(po, po->btj->d[j].bt_i); |
2717 | find_reachable_exits(po->btj->d[j].bt_i, opcnt, magic, |
2718 | exits, exit_count); |
2719 | } |
2720 | return; |
850c9265 |
2721 | } |
2722 | |
e83ea7ed |
2723 | check_i(po, po->bt_i); |
2724 | if (po->flags & OPF_CJMP) |
2725 | find_reachable_exits(po->bt_i, opcnt, magic, exits, exit_count); |
2726 | else |
2727 | i = po->bt_i - 1; |
2728 | continue; |
850c9265 |
2729 | } |
2730 | } |
e83ea7ed |
2731 | } |
2732 | |
2733 | // scan for 'reg' pop backwards starting from exits (all paths) |
2734 | static int scan_for_pop_ret(int i, int opcnt, int reg, int set_flags) |
2735 | { |
2736 | static int exits[MAX_EXITS]; |
2737 | static int exit_count; |
2738 | int j, ret; |
850c9265 |
2739 | |
e83ea7ed |
2740 | if (!set_flags) { |
2741 | exit_count = 0; |
2742 | find_reachable_exits(i, opcnt, i + opcnt * 15, exits, |
2743 | &exit_count); |
2744 | ferr_assert(&ops[i], exit_count > 0); |
2745 | } |
2746 | |
2747 | for (j = 0; j < exit_count; j++) { |
2748 | ret = scan_for_rsave_pop_reg(exits[j], i + opcnt * 16 + set_flags, |
2749 | reg, set_flags); |
2750 | if (ret == -1) |
2751 | return -1; |
2752 | } |
2753 | |
b2bd20c0 |
2754 | return 1; |
850c9265 |
2755 | } |
2756 | |
e83ea7ed |
2757 | // scan for one or more pop of push <const> |
2758 | static int scan_for_pop_const_r(int i, int opcnt, int magic, |
2759 | int push_i, int is_probe) |
9af2d373 |
2760 | { |
25a330eb |
2761 | struct parsed_op *po; |
e83ea7ed |
2762 | struct label_ref *lr; |
2763 | int ret = 0; |
9af2d373 |
2764 | int j; |
2765 | |
e83ea7ed |
2766 | for (; i < opcnt; i++) |
2767 | { |
2768 | po = &ops[i]; |
2769 | if (po->cc_scratch == magic) |
2770 | return ret; // already checked |
2771 | po->cc_scratch = magic; |
2772 | |
2773 | if (po->flags & OPF_JMP) { |
2774 | if (po->flags & OPF_RMD) |
2775 | continue; |
2776 | if (po->op == OP_CALL) |
2777 | return -1; |
2778 | |
2779 | if (po->btj != NULL) { |
2780 | for (j = 0; j < po->btj->count; j++) { |
2781 | check_i(po, po->btj->d[j].bt_i); |
2782 | ret |= scan_for_pop_const_r(po->btj->d[j].bt_i, opcnt, magic, |
2783 | push_i, is_probe); |
2784 | if (ret < 0) |
2785 | return ret; |
2786 | } |
2787 | return ret; |
2788 | } |
25a330eb |
2789 | |
e83ea7ed |
2790 | check_i(po, po->bt_i); |
2791 | if (po->flags & OPF_CJMP) { |
2792 | ret |= scan_for_pop_const_r(po->bt_i, opcnt, magic, push_i, |
2793 | is_probe); |
2794 | if (ret < 0) |
2795 | return ret; |
2796 | } |
2797 | else { |
2798 | i = po->bt_i - 1; |
2799 | } |
25a330eb |
2800 | continue; |
2801 | } |
2802 | |
e83ea7ed |
2803 | if ((po->flags & (OPF_TAIL|OPF_RSAVE)) || po->op == OP_PUSH) |
2804 | return -1; |
2805 | |
2806 | if (g_labels[i] != NULL) { |
2807 | // all refs must be visited |
2808 | lr = &g_label_refs[i]; |
2809 | for (; lr != NULL; lr = lr->next) { |
2810 | check_i(po, lr->i); |
2811 | if (ops[lr->i].cc_scratch != magic) |
2812 | return -1; |
2813 | } |
2814 | if (i > 0 && !LAST_OP(i - 1) && ops[i - 1].cc_scratch != magic) |
2815 | return -1; |
2816 | } |
2817 | |
2818 | if (po->op == OP_POP) |
9af2d373 |
2819 | { |
e83ea7ed |
2820 | if (po->flags & (OPF_RMD|OPF_DONE)) |
2821 | return -1; |
2822 | |
2823 | if (!is_probe) { |
2824 | po->flags |= OPF_DONE; |
2825 | po->datap = &ops[push_i]; |
2826 | } |
2827 | return 1; |
9af2d373 |
2828 | } |
e83ea7ed |
2829 | } |
9af2d373 |
2830 | |
e83ea7ed |
2831 | return -1; |
2832 | } |
25a330eb |
2833 | |
e83ea7ed |
2834 | static void scan_for_pop_const(int i, int opcnt, int magic) |
2835 | { |
2836 | int ret; |
2837 | |
2838 | ret = scan_for_pop_const_r(i + 1, opcnt, magic, i, 1); |
2839 | if (ret == 1) { |
2840 | ops[i].flags |= OPF_RMD | OPF_DONE; |
2841 | scan_for_pop_const_r(i + 1, opcnt, magic + 1, i, 0); |
2842 | } |
2843 | } |
2844 | |
2845 | // check if all branch targets within a marked path are also marked |
2846 | // note: the path checked must not be empty or end with a branch |
2847 | static int check_path_branches(int opcnt, int magic) |
2848 | { |
2849 | struct parsed_op *po; |
2850 | int i, j; |
2851 | |
2852 | for (i = 0; i < opcnt; i++) { |
2853 | po = &ops[i]; |
2854 | if (po->cc_scratch != magic) |
2855 | continue; |
2856 | |
2857 | if (po->flags & OPF_JMP) { |
2858 | if ((po->flags & OPF_RMD) || po->op == OP_CALL) |
2859 | continue; |
2860 | |
2861 | if (po->btj != NULL) { |
2862 | for (j = 0; j < po->btj->count; j++) { |
2863 | check_i(po, po->btj->d[j].bt_i); |
2864 | if (ops[po->btj->d[j].bt_i].cc_scratch != magic) |
2865 | return 0; |
2866 | } |
25a330eb |
2867 | } |
e83ea7ed |
2868 | |
2869 | check_i(po, po->bt_i); |
2870 | if (ops[po->bt_i].cc_scratch != magic) |
2871 | return 0; |
2872 | if ((po->flags & OPF_CJMP) && ops[i + 1].cc_scratch != magic) |
2873 | return 0; |
2874 | } |
2875 | } |
2876 | |
2877 | return 1; |
2878 | } |
2879 | |
2880 | // scan for multiple pushes for given pop |
2881 | static int scan_pushes_for_pop_r(int i, int magic, int pop_i, |
2882 | int is_probe) |
2883 | { |
2884 | int reg = ops[pop_i].operand[0].reg; |
2885 | struct parsed_op *po; |
2886 | struct label_ref *lr; |
2887 | int ret = 0; |
2888 | |
2889 | ops[i].cc_scratch = magic; |
2890 | |
2891 | while (1) |
2892 | { |
2893 | if (g_labels[i] != NULL) { |
2894 | lr = &g_label_refs[i]; |
2895 | for (; lr != NULL; lr = lr->next) { |
2896 | check_i(&ops[i], lr->i); |
2897 | ret |= scan_pushes_for_pop_r(lr->i, magic, pop_i, is_probe); |
2898 | if (ret < 0) |
2899 | return ret; |
25a330eb |
2900 | } |
e83ea7ed |
2901 | if (i > 0 && LAST_OP(i - 1)) |
2902 | return ret; |
2903 | } |
2904 | |
2905 | i--; |
2906 | if (i < 0) |
9af2d373 |
2907 | break; |
e83ea7ed |
2908 | |
2909 | if (ops[i].cc_scratch == magic) |
2910 | return ret; |
2911 | ops[i].cc_scratch = magic; |
2912 | |
2913 | po = &ops[i]; |
2914 | if (po->op == OP_CALL) |
2915 | return -1; |
2916 | if ((po->flags & (OPF_TAIL|OPF_RSAVE)) || po->op == OP_POP) |
2917 | return -1; |
2918 | |
2919 | if (po->op == OP_PUSH) |
2920 | { |
2921 | if (po->datap != NULL) |
2922 | return -1; |
2923 | if (po->operand[0].type == OPT_REG && po->operand[0].reg == reg) |
2924 | // leave this case for reg save/restore handlers |
2925 | return -1; |
2926 | |
2927 | if (!is_probe) { |
2928 | po->flags |= OPF_PPUSH | OPF_DONE; |
2929 | po->datap = &ops[pop_i]; |
2930 | } |
2931 | return 1; |
2932 | } |
2933 | } |
2934 | |
2935 | return -1; |
2936 | } |
2937 | |
2938 | static void scan_pushes_for_pop(int i, int opcnt, int *regmask_pp) |
2939 | { |
2940 | int magic = i + opcnt * 14; |
2941 | int ret; |
2942 | |
2943 | ret = scan_pushes_for_pop_r(i, magic, i, 1); |
2944 | if (ret == 1) { |
2945 | ret = check_path_branches(opcnt, magic); |
2946 | if (ret == 1) { |
2947 | ops[i].flags |= OPF_PPUSH | OPF_DONE; |
2948 | *regmask_pp |= 1 << ops[i].operand[0].reg; |
2949 | scan_pushes_for_pop_r(i, magic + 1, i, 0); |
9af2d373 |
2950 | } |
2951 | } |
2952 | } |
2953 | |
591721d7 |
2954 | static void scan_propagate_df(int i, int opcnt) |
2955 | { |
2956 | struct parsed_op *po = &ops[i]; |
2957 | int j; |
2958 | |
2959 | for (; i < opcnt; i++) { |
2960 | po = &ops[i]; |
2961 | if (po->flags & OPF_DF) |
2962 | return; // already resolved |
2963 | po->flags |= OPF_DF; |
2964 | |
2965 | if (po->op == OP_CALL) |
2966 | ferr(po, "call with DF set?\n"); |
2967 | |
2968 | if (po->flags & OPF_JMP) { |
2969 | if (po->btj != NULL) { |
2970 | // jumptable |
db63af51 |
2971 | for (j = 0; j < po->btj->count; j++) { |
2972 | check_i(po, po->btj->d[j].bt_i); |
591721d7 |
2973 | scan_propagate_df(po->btj->d[j].bt_i, opcnt); |
db63af51 |
2974 | } |
591721d7 |
2975 | return; |
2976 | } |
2977 | |
b2bd20c0 |
2978 | if (po->flags & OPF_RMD) |
2979 | continue; |
db63af51 |
2980 | check_i(po, po->bt_i); |
5c024ef7 |
2981 | if (po->flags & OPF_CJMP) |
591721d7 |
2982 | scan_propagate_df(po->bt_i, opcnt); |
2983 | else |
2984 | i = po->bt_i - 1; |
2985 | continue; |
2986 | } |
2987 | |
2988 | if (po->flags & OPF_TAIL) |
2989 | break; |
2990 | |
2991 | if (po->op == OP_CLD) { |
5e49b270 |
2992 | po->flags |= OPF_RMD | OPF_DONE; |
591721d7 |
2993 | return; |
2994 | } |
2995 | } |
2996 | |
2997 | ferr(po, "missing DF clear?\n"); |
2998 | } |
2999 | |
db63af51 |
3000 | // is operand 'opr' referenced by parsed_op 'po'? |
3001 | static int is_opr_referenced(const struct parsed_opr *opr, |
3002 | const struct parsed_op *po) |
3003 | { |
3004 | int i, mask; |
3005 | |
3006 | if (opr->type == OPT_REG) { |
3007 | mask = po->regmask_dst | po->regmask_src; |
3008 | if (po->op == OP_CALL) |
3009 | mask |= (1 << xAX) | (1 << xCX) | (1 << xDX); |
3010 | if ((1 << opr->reg) & mask) |
3011 | return 1; |
3012 | else |
3013 | return 0; |
3014 | } |
3015 | |
3016 | for (i = 0; i < po->operand_cnt; i++) |
3017 | if (IS(po->operand[0].name, opr->name)) |
3018 | return 1; |
3019 | |
3020 | return 0; |
3021 | } |
3022 | |
3023 | // is operand 'opr' read by parsed_op 'po'? |
3024 | static int is_opr_read(const struct parsed_opr *opr, |
3025 | const struct parsed_op *po) |
3026 | { |
db63af51 |
3027 | if (opr->type == OPT_REG) { |
b2bd20c0 |
3028 | if (po->regmask_src & (1 << opr->reg)) |
db63af51 |
3029 | return 1; |
3030 | else |
3031 | return 0; |
3032 | } |
3033 | |
3034 | // yes I'm lazy |
3035 | return 0; |
3036 | } |
3037 | |
1cd4a663 |
3038 | // is operand 'opr' modified by parsed_op 'po'? |
5101a5f9 |
3039 | static int is_opr_modified(const struct parsed_opr *opr, |
69a3cdfc |
3040 | const struct parsed_op *po) |
3041 | { |
89ff3147 |
3042 | int mask; |
3043 | |
89ff3147 |
3044 | if (opr->type == OPT_REG) { |
3045 | if (po->op == OP_CALL) { |
b2bd20c0 |
3046 | mask = po->regmask_dst; |
3047 | mask |= (1 << xAX) | (1 << xCX) | (1 << xDX); // ? |
3048 | if (mask & (1 << opr->reg)) |
89ff3147 |
3049 | return 1; |
3050 | else |
3051 | return 0; |
3052 | } |
3053 | |
b2bd20c0 |
3054 | if (po->regmask_dst & (1 << opr->reg)) |
3055 | return 1; |
3056 | else |
3057 | return 0; |
69a3cdfc |
3058 | } |
3059 | |
3060 | return IS(po->operand[0].name, opr->name); |
3061 | } |
3062 | |
5101a5f9 |
3063 | // is any operand of parsed_op 'po_test' modified by parsed_op 'po'? |
3064 | static int is_any_opr_modified(const struct parsed_op *po_test, |
89ff3147 |
3065 | const struct parsed_op *po, int c_mode) |
5101a5f9 |
3066 | { |
89ff3147 |
3067 | int mask; |
5101a5f9 |
3068 | int i; |
3069 | |
3070 | if ((po->flags & OPF_RMD) || !(po->flags & OPF_DATA)) |
3071 | return 0; |
3072 | |
de50b98b |
3073 | if (po_test->operand_cnt == 1 && po_test->operand[0].type == OPT_CONST) |
3074 | return 0; |
3075 | |
3076 | if ((po_test->regmask_src | po_test->regmask_dst) & po->regmask_dst) |
3077 | return 1; |
3078 | |
3079 | // in reality, it can wreck any register, but in decompiled C |
2b43685d |
3080 | // version it can only overwrite eax or edx:eax |
89ff3147 |
3081 | mask = (1 << xAX) | (1 << xDX); |
3082 | if (!c_mode) |
3083 | mask |= 1 << xCX; |
3084 | |
de50b98b |
3085 | if (po->op == OP_CALL |
89ff3147 |
3086 | && ((po_test->regmask_src | po_test->regmask_dst) & mask)) |
5101a5f9 |
3087 | return 1; |
3088 | |
3089 | for (i = 0; i < po_test->operand_cnt; i++) |
3090 | if (IS(po_test->operand[i].name, po->operand[0].name)) |
3091 | return 1; |
3092 | |
3093 | return 0; |
3094 | } |
3095 | |
940e8e66 |
3096 | // scan for any po_test operand modification in range given |
89ff3147 |
3097 | static int scan_for_mod(struct parsed_op *po_test, int i, int opcnt, |
3098 | int c_mode) |
69a3cdfc |
3099 | { |
2b43685d |
3100 | if (po_test->operand_cnt == 1 && po_test->operand[0].type == OPT_CONST) |
3101 | return -1; |
3102 | |
69a3cdfc |
3103 | for (; i < opcnt; i++) { |
89ff3147 |
3104 | if (is_any_opr_modified(po_test, &ops[i], c_mode)) |
69a3cdfc |
3105 | return i; |
3106 | } |
3107 | |
3108 | return -1; |
3109 | } |
3110 | |
940e8e66 |
3111 | // scan for po_test operand[0] modification in range given |
3112 | static int scan_for_mod_opr0(struct parsed_op *po_test, |
3113 | int i, int opcnt) |
3114 | { |
3115 | for (; i < opcnt; i++) { |
3116 | if (is_opr_modified(&po_test->operand[0], &ops[i])) |
3117 | return i; |
3118 | } |
3119 | |
3120 | return -1; |
3121 | } |
3122 | |
7f20f633 |
3123 | static int try_resolve_const(int i, const struct parsed_opr *opr, |
3124 | int magic, unsigned int *val); |
3125 | |
3126 | static int scan_for_flag_set(int i, int opcnt, int magic, |
3127 | int *branched, int *setters, int *setter_cnt) |
69a3cdfc |
3128 | { |
04f8a628 |
3129 | struct label_ref *lr; |
2b43685d |
3130 | int ret; |
de50b98b |
3131 | |
3132 | while (i >= 0) { |
04f8a628 |
3133 | if (ops[i].cc_scratch == magic) { |
04abc5d6 |
3134 | // is this a problem? |
3135 | //ferr(&ops[i], "%s looped\n", __func__); |
3136 | return 0; |
04f8a628 |
3137 | } |
3138 | ops[i].cc_scratch = magic; |
3139 | |
d7857c3a |
3140 | if (g_labels[i] != NULL) { |
2b43685d |
3141 | *branched = 1; |
04f8a628 |
3142 | |
3143 | lr = &g_label_refs[i]; |
3144 | for (; lr->next; lr = lr->next) { |
92d715b6 |
3145 | check_i(&ops[i], lr->i); |
7f20f633 |
3146 | ret = scan_for_flag_set(lr->i, opcnt, magic, |
04f8a628 |
3147 | branched, setters, setter_cnt); |
3148 | if (ret < 0) |
3149 | return ret; |
3150 | } |
3151 | |
92d715b6 |
3152 | check_i(&ops[i], lr->i); |
de50b98b |
3153 | if (i > 0 && LAST_OP(i - 1)) { |
94d447fb |
3154 | i = lr->i; |
de50b98b |
3155 | continue; |
3156 | } |
7f20f633 |
3157 | ret = scan_for_flag_set(lr->i, opcnt, magic, |
04f8a628 |
3158 | branched, setters, setter_cnt); |
2b43685d |
3159 | if (ret < 0) |
3160 | return ret; |
de50b98b |
3161 | } |
3162 | i--; |
3163 | |
2b43685d |
3164 | if (ops[i].flags & OPF_FLAGS) { |
3165 | setters[*setter_cnt] = i; |
3166 | (*setter_cnt)++; |
7f20f633 |
3167 | |
3168 | if (ops[i].flags & OPF_REP) { |
3169 | struct parsed_opr opr = OPR_INIT(OPT_REG, OPLM_DWORD, xCX); |
3170 | unsigned int uval; |
3171 | |
3172 | ret = try_resolve_const(i, &opr, i + opcnt * 7, &uval); |
3173 | if (ret != 1 || uval == 0) { |
3174 | // can't treat it as full setter because of ecx=0 case, |
3175 | // also disallow delayed compare |
3176 | *branched = 1; |
3177 | continue; |
3178 | } |
3179 | } |
3180 | |
2b43685d |
3181 | return 0; |
3182 | } |
69a3cdfc |
3183 | |
5c024ef7 |
3184 | if ((ops[i].flags & (OPF_JMP|OPF_CJMP)) == OPF_JMP) |
69a3cdfc |
3185 | return -1; |
69a3cdfc |
3186 | } |
3187 | |
3188 | return -1; |
3189 | } |
3190 | |
5101a5f9 |
3191 | // scan back for cdq, if anything modifies edx, fail |
3192 | static int scan_for_cdq_edx(int i) |
3193 | { |
cdfaeed7 |
3194 | while (i >= 0) { |
d7857c3a |
3195 | if (g_labels[i] != NULL) { |
cdfaeed7 |
3196 | if (g_label_refs[i].next != NULL) |
3197 | return -1; |
3198 | if (i > 0 && LAST_OP(i - 1)) { |
3199 | i = g_label_refs[i].i; |
3200 | continue; |
3201 | } |
3202 | return -1; |
3203 | } |
3204 | i--; |
3205 | |
5101a5f9 |
3206 | if (ops[i].op == OP_CDQ) |
3207 | return i; |
3208 | |
3209 | if (ops[i].regmask_dst & (1 << xDX)) |
3210 | return -1; |
5101a5f9 |
3211 | } |
3212 | |
3213 | return -1; |
3214 | } |
3215 | |
64c59faf |
3216 | static int scan_for_reg_clear(int i, int reg) |
3217 | { |
cdfaeed7 |
3218 | while (i >= 0) { |
d7857c3a |
3219 | if (g_labels[i] != NULL) { |
cdfaeed7 |
3220 | if (g_label_refs[i].next != NULL) |
3221 | return -1; |
3222 | if (i > 0 && LAST_OP(i - 1)) { |
3223 | i = g_label_refs[i].i; |
3224 | continue; |
3225 | } |
3226 | return -1; |
3227 | } |
3228 | i--; |
3229 | |
64c59faf |
3230 | if (ops[i].op == OP_XOR |
3231 | && ops[i].operand[0].lmod == OPLM_DWORD |
3232 | && ops[i].operand[0].reg == ops[i].operand[1].reg |
3233 | && ops[i].operand[0].reg == reg) |
3234 | return i; |
3235 | |
3236 | if (ops[i].regmask_dst & (1 << reg)) |
3237 | return -1; |
64c59faf |
3238 | } |
3239 | |
3240 | return -1; |
3241 | } |
3242 | |
ee2361b9 |
3243 | static void patch_esp_adjust(struct parsed_op *po, int adj) |
3244 | { |
3245 | ferr_assert(po, po->op == OP_ADD); |
3246 | ferr_assert(po, IS(opr_name(po, 0), "esp")); |
3247 | ferr_assert(po, po->operand[1].type == OPT_CONST); |
3248 | |
3249 | // this is a bit of a hack, but deals with use of |
3250 | // single adj for multiple calls |
3251 | po->operand[1].val -= adj; |
3252 | po->flags |= OPF_RMD; |
3253 | if (po->operand[1].val == 0) |
3254 | po->flags |= OPF_DONE; |
3255 | ferr_assert(po, (int)po->operand[1].val >= 0); |
3256 | } |
3257 | |
1bafb621 |
3258 | // scan for positive, constant esp adjust |
ee2361b9 |
3259 | // multipath case is preliminary |
9af2d373 |
3260 | static int scan_for_esp_adjust(int i, int opcnt, |
ee2361b9 |
3261 | int adj_expect, int *adj, int *is_multipath, int do_update) |
1bafb621 |
3262 | { |
bfacdc83 |
3263 | int adj_expect_unknown = 0; |
7ba45c34 |
3264 | struct parsed_op *po; |
46411e6c |
3265 | int first_pop = -1; |
bfacdc83 |
3266 | int adj_best = 0; |
4741fdfe |
3267 | |
ee2361b9 |
3268 | *adj = *is_multipath = 0; |
bfacdc83 |
3269 | if (adj_expect < 0) { |
3270 | adj_expect_unknown = 1; |
3271 | adj_expect = 32 * 4; // enough? |
3272 | } |
7ba45c34 |
3273 | |
9af2d373 |
3274 | for (; i < opcnt && *adj < adj_expect; i++) { |
d7857c3a |
3275 | if (g_labels[i] != NULL) |
ee2361b9 |
3276 | *is_multipath = 1; |
a2c1d768 |
3277 | |
5e49b270 |
3278 | po = &ops[i]; |
3279 | if (po->flags & OPF_DONE) |
3280 | continue; |
3281 | |
7ba45c34 |
3282 | if (po->op == OP_ADD && po->operand[0].reg == xSP) { |
3283 | if (po->operand[1].type != OPT_CONST) |
1bafb621 |
3284 | ferr(&ops[i], "non-const esp adjust?\n"); |
7ba45c34 |
3285 | *adj += po->operand[1].val; |
1bafb621 |
3286 | if (*adj & 3) |
3287 | ferr(&ops[i], "unaligned esp adjust: %x\n", *adj); |
ee2361b9 |
3288 | if (do_update) { |
3289 | if (!*is_multipath) |
3290 | patch_esp_adjust(po, adj_expect); |
3291 | else |
3292 | po->flags |= OPF_RMD; |
3293 | } |
1bafb621 |
3294 | return i; |
3295 | } |
5e49b270 |
3296 | else if (po->op == OP_PUSH) { |
5c024ef7 |
3297 | //if (first_pop == -1) |
3298 | // first_pop = -2; // none |
7ba45c34 |
3299 | *adj -= lmod_bytes(po, po->operand[0].lmod); |
46411e6c |
3300 | } |
5e49b270 |
3301 | else if (po->op == OP_POP) { |
91ca764a |
3302 | if (!(po->flags & OPF_DONE)) { |
3303 | // seems like msvc only uses 'pop ecx' for stack realignment.. |
3304 | if (po->operand[0].type != OPT_REG || po->operand[0].reg != xCX) |
3305 | break; |
3306 | if (first_pop == -1 && *adj >= 0) |
3307 | first_pop = i; |
3308 | } |
ee2361b9 |
3309 | if (do_update && *adj >= 0) { |
3310 | po->flags |= OPF_RMD; |
3311 | if (!*is_multipath) |
b2bd20c0 |
3312 | po->flags |= OPF_DONE | OPF_NOREGS; |
ee2361b9 |
3313 | } |
3314 | |
7ba45c34 |
3315 | *adj += lmod_bytes(po, po->operand[0].lmod); |
bfacdc83 |
3316 | if (*adj > adj_best) |
3317 | adj_best = *adj; |
46411e6c |
3318 | } |
e56ab892 |
3319 | else if (po->flags & (OPF_JMP|OPF_TAIL)) { |
4741fdfe |
3320 | if (po->op == OP_JMP && po->btj == NULL) { |
5e49b270 |
3321 | if (po->bt_i <= i) |
3322 | break; |
4741fdfe |
3323 | i = po->bt_i - 1; |
3324 | continue; |
3325 | } |
e56ab892 |
3326 | if (po->op != OP_CALL) |
a2c1d768 |
3327 | break; |
e56ab892 |
3328 | if (po->operand[0].type != OPT_LABEL) |
a2c1d768 |
3329 | break; |
91ca764a |
3330 | if (po->pp != NULL && po->pp->is_stdcall) |
89ff3147 |
3331 | break; |
bfacdc83 |
3332 | if (adj_expect_unknown && first_pop >= 0) |
3333 | break; |
91ca764a |
3334 | // assume it's another cdecl call |
e56ab892 |
3335 | } |
a2c1d768 |
3336 | } |
7ba45c34 |
3337 | |
108e9fe3 |
3338 | if (first_pop >= 0) { |
bfacdc83 |
3339 | // probably only 'pop ecx' was used |
3340 | *adj = adj_best; |
46411e6c |
3341 | return first_pop; |
1bafb621 |
3342 | } |
3343 | |
3344 | return -1; |
3345 | } |
3346 | |
a3684be1 |
3347 | static void scan_fwd_set_flags(int i, int opcnt, int magic, int flags) |
3348 | { |
3349 | struct parsed_op *po; |
3350 | int j; |
3351 | |
3352 | if (i < 0) |
3353 | ferr(ops, "%s: followed bad branch?\n", __func__); |
3354 | |
3355 | for (; i < opcnt; i++) { |
3356 | po = &ops[i]; |
3357 | if (po->cc_scratch == magic) |
3358 | return; |
3359 | po->cc_scratch = magic; |
3360 | po->flags |= flags; |
3361 | |
3362 | if ((po->flags & OPF_JMP) && po->op != OP_CALL) { |
3363 | if (po->btj != NULL) { |
3364 | // jumptable |
3365 | for (j = 0; j < po->btj->count; j++) |
3366 | scan_fwd_set_flags(po->btj->d[j].bt_i, opcnt, magic, flags); |
3367 | return; |
3368 | } |
3369 | |
3370 | scan_fwd_set_flags(po->bt_i, opcnt, magic, flags); |
5c024ef7 |
3371 | if (!(po->flags & OPF_CJMP)) |
a3684be1 |
3372 | return; |
3373 | } |
3374 | if (po->flags & OPF_TAIL) |
3375 | return; |
3376 | } |
3377 | } |
3378 | |
1cd4a663 |
3379 | static const struct parsed_proto *try_recover_pp( |
93b5bd18 |
3380 | struct parsed_op *po, const struct parsed_opr *opr, |
3381 | int is_call, int *search_instead) |
1cd4a663 |
3382 | { |
3383 | const struct parsed_proto *pp = NULL; |
89ff3147 |
3384 | char buf[256]; |
3385 | char *p; |
1cd4a663 |
3386 | |
3387 | // maybe an arg of g_func? |
3388 | if (opr->type == OPT_REGMEM && is_stack_access(po, opr)) |
3389 | { |
3390 | char ofs_reg[16] = { 0, }; |
3391 | int arg, arg_s, arg_i; |
3392 | int stack_ra = 0; |
3393 | int offset = 0; |
3394 | |
9af2d373 |
3395 | if (g_header_mode) |
3396 | return NULL; |
3397 | |
1cd4a663 |
3398 | parse_stack_access(po, opr->name, ofs_reg, |
037f4971 |
3399 | &offset, &stack_ra, NULL, 0); |
1cd4a663 |
3400 | if (ofs_reg[0] != 0) |
3401 | ferr(po, "offset reg on arg access?\n"); |
da87ae38 |
3402 | if (offset <= stack_ra) { |
3403 | // search who set the stack var instead |
3404 | if (search_instead != NULL) |
3405 | *search_instead = 1; |
3406 | return NULL; |
3407 | } |
1cd4a663 |
3408 | |
3409 | arg_i = (offset - stack_ra - 4) / 4; |
3410 | for (arg = arg_s = 0; arg < g_func_pp->argc; arg++) { |
3411 | if (g_func_pp->arg[arg].reg != NULL) |
3412 | continue; |
3413 | if (arg_s == arg_i) |
3414 | break; |
3415 | arg_s++; |
3416 | } |
3417 | if (arg == g_func_pp->argc) |
3418 | ferr(po, "stack arg %d not in prototype?\n", arg_i); |
3419 | |
93b5bd18 |
3420 | pp = g_func_pp->arg[arg].pp; |
3421 | if (is_call) { |
3422 | if (pp == NULL) |
3423 | ferr(po, "icall arg: arg%d has no pp\n", arg + 1); |
3424 | check_func_pp(po, pp, "icall arg"); |
3425 | } |
89ff3147 |
3426 | } |
3427 | else if (opr->type == OPT_REGMEM && strchr(opr->name + 1, '[')) { |
3428 | // label[index] |
3429 | p = strchr(opr->name + 1, '['); |
3430 | memcpy(buf, opr->name, p - opr->name); |
3431 | buf[p - opr->name] = 0; |
92d715b6 |
3432 | pp = proto_parse(g_fhdr, buf, g_quiet_pp); |
1cd4a663 |
3433 | } |
3434 | else if (opr->type == OPT_OFFSET || opr->type == OPT_LABEL) { |
9af2d373 |
3435 | pp = proto_parse(g_fhdr, opr->name, g_quiet_pp); |
3436 | if (pp == NULL) { |
3437 | if (!g_header_mode) |
3438 | ferr(po, "proto_parse failed for icall to '%s'\n", opr->name); |
3439 | } |
3440 | else |
3441 | check_func_pp(po, pp, "reg-fptr ref"); |
1cd4a663 |
3442 | } |
3443 | |
3444 | return pp; |
3445 | } |
3446 | |
da87ae38 |
3447 | static void scan_for_call_type(int i, const struct parsed_opr *opr, |
db63af51 |
3448 | int magic, const struct parsed_proto **pp_found, int *pp_i, |
3449 | int *multi) |
1cd4a663 |
3450 | { |
3451 | const struct parsed_proto *pp = NULL; |
3452 | struct parsed_op *po; |
3453 | struct label_ref *lr; |
3454 | |
037f4971 |
3455 | ops[i].cc_scratch = magic; |
1cd4a663 |
3456 | |
037f4971 |
3457 | while (1) { |
d7857c3a |
3458 | if (g_labels[i] != NULL) { |
1cd4a663 |
3459 | lr = &g_label_refs[i]; |
92d715b6 |
3460 | for (; lr != NULL; lr = lr->next) { |
3461 | check_i(&ops[i], lr->i); |
db63af51 |
3462 | scan_for_call_type(lr->i, opr, magic, pp_found, pp_i, multi); |
92d715b6 |
3463 | } |
46411e6c |
3464 | if (i > 0 && LAST_OP(i - 1)) |
3465 | return; |
1cd4a663 |
3466 | } |
037f4971 |
3467 | |
1cd4a663 |
3468 | i--; |
037f4971 |
3469 | if (i < 0) |
3470 | break; |
3471 | |
3472 | if (ops[i].cc_scratch == magic) |
3473 | return; |
3474 | ops[i].cc_scratch = magic; |
1cd4a663 |
3475 | |
3476 | if (!(ops[i].flags & OPF_DATA)) |
3477 | continue; |
3478 | if (!is_opr_modified(opr, &ops[i])) |
3479 | continue; |
3480 | if (ops[i].op != OP_MOV && ops[i].op != OP_LEA) { |
3481 | // most probably trashed by some processing |
3482 | *pp_found = NULL; |
3483 | return; |
3484 | } |
3485 | |
3486 | opr = &ops[i].operand[1]; |
3487 | if (opr->type != OPT_REG) |
3488 | break; |
3489 | } |
3490 | |
3491 | po = (i >= 0) ? &ops[i] : ops; |
3492 | |
3493 | if (i < 0) { |
3494 | // reached the top - can only be an arg-reg |
04abc5d6 |
3495 | if (opr->type != OPT_REG || g_func_pp == NULL) |
1cd4a663 |
3496 | return; |
3497 | |
3498 | for (i = 0; i < g_func_pp->argc; i++) { |
3499 | if (g_func_pp->arg[i].reg == NULL) |
3500 | continue; |
3501 | if (IS(opr->name, g_func_pp->arg[i].reg)) |
3502 | break; |
3503 | } |
3504 | if (i == g_func_pp->argc) |
3505 | return; |
93b5bd18 |
3506 | pp = g_func_pp->arg[i].pp; |
1cd4a663 |
3507 | if (pp == NULL) |
46411e6c |
3508 | ferr(po, "icall: arg%d (%s) is not a fptr?\n", |
3509 | i + 1, g_func_pp->arg[i].reg); |
89ff3147 |
3510 | check_func_pp(po, pp, "icall reg-arg"); |
1cd4a663 |
3511 | } |
3512 | else |
93b5bd18 |
3513 | pp = try_recover_pp(po, opr, 1, NULL); |
1cd4a663 |
3514 | |
89ff3147 |
3515 | if (*pp_found != NULL && pp != NULL && *pp_found != pp) { |
1cd4a663 |
3516 | if (!IS((*pp_found)->ret_type.name, pp->ret_type.name) |
3517 | || (*pp_found)->is_stdcall != pp->is_stdcall |
89ff3147 |
3518 | || (*pp_found)->is_fptr != pp->is_fptr |
1cd4a663 |
3519 | || (*pp_found)->argc != pp->argc |
3520 | || (*pp_found)->argc_reg != pp->argc_reg |
3521 | || (*pp_found)->argc_stack != pp->argc_stack) |
3522 | { |
3523 | ferr(po, "icall: parsed_proto mismatch\n"); |
3524 | } |
89ff3147 |
3525 | *multi = 1; |
1cd4a663 |
3526 | } |
db63af51 |
3527 | if (pp != NULL) { |
1cd4a663 |
3528 | *pp_found = pp; |
db63af51 |
3529 | *pp_i = po - ops; |
3530 | } |
1cd4a663 |
3531 | } |
3532 | |
66bdb2b0 |
3533 | static void add_label_ref(struct label_ref *lr, int op_i) |
9af2d373 |
3534 | { |
66bdb2b0 |
3535 | struct label_ref *lr_new; |
9af2d373 |
3536 | |
66bdb2b0 |
3537 | if (lr->i == -1) { |
3538 | lr->i = op_i; |
3539 | return; |
3540 | } |
9af2d373 |
3541 | |
66bdb2b0 |
3542 | lr_new = calloc(1, sizeof(*lr_new)); |
3543 | lr_new->i = op_i; |
3544 | lr_new->next = lr->next; |
3545 | lr->next = lr_new; |
3546 | } |
3547 | |
3548 | static struct parsed_data *try_resolve_jumptab(int i, int opcnt) |
3549 | { |
3550 | struct parsed_op *po = &ops[i]; |
3551 | struct parsed_data *pd; |
3552 | char label[NAMELEN], *p; |
3553 | int len, j, l; |
3554 | |
3555 | p = strchr(po->operand[0].name, '['); |
3556 | if (p == NULL) |
3557 | return NULL; |
3558 | |
3559 | len = p - po->operand[0].name; |
3560 | strncpy(label, po->operand[0].name, len); |
3561 | label[len] = 0; |
3562 | |
3563 | for (j = 0, pd = NULL; j < g_func_pd_cnt; j++) { |
3564 | if (IS(g_func_pd[j].label, label)) { |
3565 | pd = &g_func_pd[j]; |
3566 | break; |
3567 | } |
3568 | } |
3569 | if (pd == NULL) |
3570 | //ferr(po, "label '%s' not parsed?\n", label); |
3571 | return NULL; |
3572 | |
3573 | if (pd->type != OPT_OFFSET) |
3574 | ferr(po, "label '%s' with non-offset data?\n", label); |
3575 | |
3576 | // find all labels, link |
3577 | for (j = 0; j < pd->count; j++) { |
3578 | for (l = 0; l < opcnt; l++) { |
3579 | if (g_labels[l] != NULL && IS(g_labels[l], pd->d[j].u.label)) { |
3580 | add_label_ref(&g_label_refs[l], i); |
3581 | pd->d[j].bt_i = l; |
3582 | break; |
3583 | } |
3584 | } |
3585 | } |
3586 | |
3587 | return pd; |
3588 | } |
3589 | |
3590 | static void clear_labels(int count) |
3591 | { |
3592 | int i; |
3593 | |
3594 | for (i = 0; i < count; i++) { |
3595 | if (g_labels[i] != NULL) { |
3596 | free(g_labels[i]); |
3597 | g_labels[i] = NULL; |
3598 | } |
3599 | } |
3600 | } |
3601 | |
b2bd20c0 |
3602 | static int get_pp_arg_regmask_src(const struct parsed_proto *pp) |
3603 | { |
3604 | int regmask = 0; |
3605 | int i, reg; |
3606 | |
3607 | for (i = 0; i < pp->argc; i++) { |
3608 | if (pp->arg[i].reg != NULL) { |
3609 | reg = char_array_i(regs_r32, |
3610 | ARRAY_SIZE(regs_r32), pp->arg[i].reg); |
3611 | if (reg < 0) |
3612 | ferr(ops, "arg '%s' of func '%s' is not a reg?\n", |
3613 | pp->arg[i].reg, pp->name); |
3614 | regmask |= 1 << reg; |
3615 | } |
3616 | } |
3617 | |
3618 | return regmask; |
3619 | } |
3620 | |
3621 | static int get_pp_arg_regmask_dst(const struct parsed_proto *pp) |
3622 | { |
4d247254 |
3623 | int regmask = 0; |
3624 | int i, reg; |
3625 | |
3626 | if (pp->has_retreg) { |
3627 | for (i = 0; i < pp->argc; i++) { |
3628 | if (pp->arg[i].type.is_retreg) { |
3629 | reg = char_array_i(regs_r32, |
3630 | ARRAY_SIZE(regs_r32), pp->arg[i].reg); |
3631 | ferr_assert(ops, reg >= 0); |
3632 | regmask |= 1 << reg; |
3633 | } |
3634 | } |
3635 | } |
3636 | |
b2bd20c0 |
3637 | if (strstr(pp->ret_type.name, "int64")) |
4d247254 |
3638 | return regmask | (1 << xAX) | (1 << xDX); |
d4a985bd |
3639 | if (IS(pp->ret_type.name, "float") |
3640 | || IS(pp->ret_type.name, "double")) |
3641 | { |
4d247254 |
3642 | return regmask | mxST0; |
d4a985bd |
3643 | } |
b2bd20c0 |
3644 | if (strcasecmp(pp->ret_type.name, "void") == 0) |
4d247254 |
3645 | return regmask; |
b2bd20c0 |
3646 | |
4d247254 |
3647 | return regmask | mxAX; |
b2bd20c0 |
3648 | } |
3649 | |
93b5bd18 |
3650 | static int are_ops_same(struct parsed_op *po1, struct parsed_op *po2) |
3651 | { |
3652 | return po1->op == po2->op && po1->operand_cnt == po2->operand_cnt |
3653 | && memcmp(po1->operand, po2->operand, |
3654 | sizeof(po1->operand[0]) * po1->operand_cnt) == 0; |
3655 | } |
3656 | |
66bdb2b0 |
3657 | static void resolve_branches_parse_calls(int opcnt) |
3658 | { |
d4a985bd |
3659 | static const struct { |
3660 | const char *name; |
3661 | enum op_op op; |
3662 | unsigned int flags; |
3663 | unsigned int regmask_src; |
3664 | unsigned int regmask_dst; |
3665 | } pseudo_ops[] = { |
622eb2ef |
3666 | { "__allshl", OPP_ALLSHL, OPF_DATA, mxAX|mxDX|mxCX, mxAX|mxDX }, |
3667 | { "__allshr", OPP_ALLSHR, OPF_DATA, mxAX|mxDX|mxCX, mxAX|mxDX }, |
3668 | { "__ftol", OPP_FTOL, OPF_FPOP, mxST0, mxAX | mxDX }, |
8c83cc48 |
3669 | { "__CIpow", OPP_CIPOW, OPF_FPOP, mxST0|mxST1, mxST0 }, |
d4a985bd |
3670 | }; |
66bdb2b0 |
3671 | const struct parsed_proto *pp_c; |
3672 | struct parsed_proto *pp; |
3673 | struct parsed_data *pd; |
3674 | struct parsed_op *po; |
3675 | const char *tmpname; |
b2bd20c0 |
3676 | int i, l; |
3677 | int ret; |
66bdb2b0 |
3678 | |
3679 | for (i = 0; i < opcnt; i++) |
3680 | { |
3681 | po = &ops[i]; |
3682 | po->bt_i = -1; |
3683 | po->btj = NULL; |
3684 | |
865f1aca |
3685 | if (po->datap != NULL) { |
3686 | pp = calloc(1, sizeof(*pp)); |
3687 | my_assert_not(pp, NULL); |
3688 | |
3689 | ret = parse_protostr(po->datap, pp); |
3690 | if (ret < 0) |
3691 | ferr(po, "bad protostr supplied: %s\n", (char *)po->datap); |
3692 | free(po->datap); |
3693 | po->datap = NULL; |
3694 | po->pp = pp; |
3695 | } |
3696 | |
66bdb2b0 |
3697 | if (po->op == OP_CALL) { |
3698 | pp = NULL; |
3699 | |
865f1aca |
3700 | if (po->pp != NULL) |
3701 | pp = po->pp; |
3702 | else if (po->operand[0].type == OPT_LABEL) |
3703 | { |
66bdb2b0 |
3704 | tmpname = opr_name(po, 0); |
3705 | if (IS_START(tmpname, "loc_")) |
3706 | ferr(po, "call to loc_*\n"); |
16057ce1 |
3707 | if (IS(tmpname, "__alloca_probe")) |
3708 | continue; |
d4a985bd |
3709 | |
3710 | // convert some calls to pseudo-ops |
3711 | for (l = 0; l < ARRAY_SIZE(pseudo_ops); l++) { |
3712 | if (!IS(tmpname, pseudo_ops[l].name)) |
3713 | continue; |
3714 | |
3715 | po->op = pseudo_ops[l].op; |
3716 | po->operand_cnt = 0; |
3717 | po->regmask_src = pseudo_ops[l].regmask_src; |
3718 | po->regmask_dst = pseudo_ops[l].regmask_dst; |
3719 | po->flags = pseudo_ops[l].flags; |
3720 | po->flags |= po->regmask_dst ? OPF_DATA : 0; |
3721 | break; |
3722 | } |
3723 | if (l < ARRAY_SIZE(pseudo_ops)) |
3724 | continue; |
3725 | |
66bdb2b0 |
3726 | pp_c = proto_parse(g_fhdr, tmpname, g_header_mode); |
3727 | if (!g_header_mode && pp_c == NULL) |
3728 | ferr(po, "proto_parse failed for call '%s'\n", tmpname); |
3729 | |
3730 | if (pp_c != NULL) { |
3731 | pp = proto_clone(pp_c); |
3732 | my_assert_not(pp, NULL); |
3733 | } |
3734 | } |
66bdb2b0 |
3735 | |
3736 | if (pp != NULL) { |
3737 | if (pp->is_fptr) |
3738 | check_func_pp(po, pp, "fptr var call"); |
3739 | if (pp->is_noreturn) |
3740 | po->flags |= OPF_TAIL; |
3741 | } |
3742 | po->pp = pp; |
3743 | continue; |
3744 | } |
3745 | |
3746 | if (!(po->flags & OPF_JMP) || po->op == OP_RET) |
3747 | continue; |
3748 | |
3749 | if (po->operand[0].type == OPT_REGMEM) { |
3750 | pd = try_resolve_jumptab(i, opcnt); |
3751 | if (pd == NULL) |
3752 | goto tailcall; |
3753 | |
3754 | po->btj = pd; |
3755 | continue; |
3756 | } |
3757 | |
3758 | for (l = 0; l < opcnt; l++) { |
3759 | if (g_labels[l] != NULL |
3760 | && IS(po->operand[0].name, g_labels[l])) |
3761 | { |
3762 | if (l == i + 1 && po->op == OP_JMP) { |
3763 | // yet another alignment type.. |
3764 | po->flags |= OPF_RMD|OPF_DONE; |
3765 | break; |
3766 | } |
3767 | add_label_ref(&g_label_refs[l], i); |
3768 | po->bt_i = l; |
3769 | break; |
3770 | } |
3771 | } |
3772 | |
3773 | if (po->bt_i != -1 || (po->flags & OPF_RMD)) |
3774 | continue; |
3775 | |
3776 | if (po->operand[0].type == OPT_LABEL) |
3777 | // assume tail call |
3778 | goto tailcall; |
3779 | |
3780 | ferr(po, "unhandled branch\n"); |
3781 | |
3782 | tailcall: |
3783 | po->op = OP_CALL; |
3784 | po->flags |= OPF_TAIL; |
3785 | if (i > 0 && ops[i - 1].op == OP_POP) |
3786 | po->flags |= OPF_ATAIL; |
3787 | i--; // reprocess |
3788 | } |
9af2d373 |
3789 | } |
3790 | |
3791 | static void scan_prologue_epilogue(int opcnt) |
3792 | { |
16057ce1 |
3793 | int ecx_push = 0, esp_sub = 0, pusha = 0; |
3794 | int sandard_epilogue; |
9af2d373 |
3795 | int found; |
3796 | int i, j, l; |
3797 | |
3798 | if (ops[0].op == OP_PUSH && IS(opr_name(&ops[0], 0), "ebp") |
3799 | && ops[1].op == OP_MOV |
3800 | && IS(opr_name(&ops[1], 0), "ebp") |
3801 | && IS(opr_name(&ops[1], 1), "esp")) |
3802 | { |
3803 | g_bp_frame = 1; |
b2bd20c0 |
3804 | ops[0].flags |= OPF_RMD | OPF_DONE | OPF_NOREGS; |
3805 | ops[1].flags |= OPF_RMD | OPF_DONE | OPF_NOREGS; |
9af2d373 |
3806 | i = 2; |
3807 | |
16057ce1 |
3808 | if (ops[i].op == OP_PUSHA) { |
3809 | ops[i].flags |= OPF_RMD | OPF_DONE | OPF_NOREGS; |
3810 | pusha = 1; |
3811 | i++; |
3812 | } |
3813 | |
3814 | if (ops[i].op == OP_SUB && IS(opr_name(&ops[i], 0), "esp")) { |
3815 | g_stack_fsz = opr_const(&ops[i], 1); |
3816 | ops[i].flags |= OPF_RMD | OPF_DONE | OPF_NOREGS; |
9af2d373 |
3817 | i++; |
3818 | } |
3819 | else { |
3820 | // another way msvc builds stack frame.. |
9af2d373 |
3821 | while (ops[i].op == OP_PUSH && IS(opr_name(&ops[i], 0), "ecx")) { |
3822 | g_stack_fsz += 4; |
b2bd20c0 |
3823 | ops[i].flags |= OPF_RMD | OPF_DONE | OPF_NOREGS; |
9af2d373 |
3824 | ecx_push++; |
3825 | i++; |
3826 | } |
3827 | // and another way.. |
3828 | if (i == 2 && ops[i].op == OP_MOV && ops[i].operand[0].reg == xAX |
3829 | && ops[i].operand[1].type == OPT_CONST |
3830 | && ops[i + 1].op == OP_CALL |
3831 | && IS(opr_name(&ops[i + 1], 0), "__alloca_probe")) |
3832 | { |
3833 | g_stack_fsz += ops[i].operand[1].val; |
b2bd20c0 |
3834 | ops[i].flags |= OPF_RMD | OPF_DONE | OPF_NOREGS; |
9af2d373 |
3835 | i++; |
b2bd20c0 |
3836 | ops[i].flags |= OPF_RMD | OPF_DONE | OPF_NOREGS; |
9af2d373 |
3837 | i++; |
3838 | } |
3839 | } |
3840 | |
3841 | found = 0; |
3842 | do { |
3843 | for (; i < opcnt; i++) |
66bdb2b0 |
3844 | if (ops[i].flags & OPF_TAIL) |
9af2d373 |
3845 | break; |
3846 | j = i - 1; |
3847 | if (i == opcnt && (ops[j].flags & OPF_JMP)) { |
66bdb2b0 |
3848 | if (ops[j].bt_i != -1 || ops[j].btj != NULL) |
3849 | break; |
3850 | i--; |
9af2d373 |
3851 | j--; |
3852 | } |
3853 | |
16057ce1 |
3854 | sandard_epilogue = 0; |
3855 | if (ops[j].op == OP_POP && IS(opr_name(&ops[j], 0), "ebp")) |
3856 | { |
3857 | ops[j].flags |= OPF_RMD | OPF_DONE | OPF_NOREGS; |
3858 | // the standard epilogue is sometimes even used without a sf |
3859 | if (ops[j - 1].op == OP_MOV |
3860 | && IS(opr_name(&ops[j - 1], 0), "esp") |
3861 | && IS(opr_name(&ops[j - 1], 1), "ebp")) |
3862 | sandard_epilogue = 1; |
3863 | } |
3864 | else if (ops[j].op == OP_LEAVE) |
9af2d373 |
3865 | { |
b2bd20c0 |
3866 | ops[j].flags |= OPF_RMD | OPF_DONE | OPF_NOREGS; |
16057ce1 |
3867 | sandard_epilogue = 1; |
9af2d373 |
3868 | } |
66bdb2b0 |
3869 | else if (ops[i].op == OP_CALL && ops[i].pp != NULL |
3870 | && ops[i].pp->is_noreturn) |
3871 | { |
3872 | // on noreturn, msvc sometimes cleans stack, sometimes not |
3873 | i++; |
3874 | found = 1; |
3875 | continue; |
3876 | } |
9af2d373 |
3877 | else if (!(g_ida_func_attr & IDAFA_NORETURN)) |
3878 | ferr(&ops[j], "'pop ebp' expected\n"); |
3879 | |
16057ce1 |
3880 | if (g_stack_fsz != 0 || sandard_epilogue) { |
bfacdc83 |
3881 | if (ops[j].op == OP_LEAVE) |
3882 | j--; |
16057ce1 |
3883 | else if (sandard_epilogue) // mov esp, ebp |
9af2d373 |
3884 | { |
b2bd20c0 |
3885 | ops[j - 1].flags |= OPF_RMD | OPF_DONE | OPF_NOREGS; |
bfacdc83 |
3886 | j -= 2; |
9af2d373 |
3887 | } |
bfacdc83 |
3888 | else if (!(g_ida_func_attr & IDAFA_NORETURN)) |
9af2d373 |
3889 | { |
bfacdc83 |
3890 | ferr(&ops[j], "esp restore expected\n"); |
9af2d373 |
3891 | } |
3892 | |
bfacdc83 |
3893 | if (ecx_push && j >= 0 && ops[j].op == OP_POP |
3894 | && IS(opr_name(&ops[j], 0), "ecx")) |
9af2d373 |
3895 | { |
bfacdc83 |
3896 | ferr(&ops[j], "unexpected ecx pop\n"); |
9af2d373 |
3897 | } |
3898 | } |
3899 | |
16057ce1 |
3900 | if (pusha) { |
3901 | if (ops[j].op == OP_POPA) |
3902 | ops[j].flags |= OPF_RMD | OPF_DONE | OPF_NOREGS; |
3903 | else |
3904 | ferr(&ops[j], "popa expected\n"); |
3905 | } |
3906 | |
9af2d373 |
3907 | found = 1; |
3908 | i++; |
3909 | } while (i < opcnt); |
3910 | |
66bdb2b0 |
3911 | if (!found) |
3912 | ferr(ops, "missing ebp epilogue\n"); |
9af2d373 |
3913 | return; |
3914 | } |
3915 | |
3916 | // non-bp frame |
3917 | i = 0; |
3918 | while (ops[i].op == OP_PUSH && IS(opr_name(&ops[i], 0), "ecx")) { |
b2bd20c0 |
3919 | ops[i].flags |= OPF_RMD | OPF_DONE | OPF_NOREGS; |
9af2d373 |
3920 | g_stack_fsz += 4; |
3921 | ecx_push++; |
3922 | i++; |
3923 | } |
3924 | |
3925 | for (; i < opcnt; i++) { |
3926 | if (ops[i].op == OP_PUSH || (ops[i].flags & (OPF_JMP|OPF_TAIL))) |
3927 | break; |
3928 | if (ops[i].op == OP_SUB && ops[i].operand[0].reg == xSP |
3929 | && ops[i].operand[1].type == OPT_CONST) |
3930 | { |
3931 | g_stack_fsz = ops[i].operand[1].val; |
b2bd20c0 |
3932 | ops[i].flags |= OPF_RMD | OPF_DONE | OPF_NOREGS; |
16057ce1 |
3933 | i++; |
3934 | esp_sub = 1; |
3935 | break; |
3936 | } |
3937 | else if (ops[i].op == OP_MOV && ops[i].operand[0].reg == xAX |
3938 | && ops[i].operand[1].type == OPT_CONST |
3939 | && ops[i + 1].op == OP_CALL |
3940 | && IS(opr_name(&ops[i + 1], 0), "__alloca_probe")) |
3941 | { |
3942 | g_stack_fsz += ops[i].operand[1].val; |
3943 | ops[i].flags |= OPF_RMD | OPF_DONE | OPF_NOREGS; |
3944 | i++; |
3945 | ops[i].flags |= OPF_RMD | OPF_DONE | OPF_NOREGS; |
3946 | i++; |
9af2d373 |
3947 | esp_sub = 1; |
3948 | break; |
3949 | } |
3950 | } |
3951 | |
3952 | if (ecx_push && !esp_sub) { |
3953 | // could actually be args for a call.. |
3954 | for (; i < opcnt; i++) |
3955 | if (ops[i].op != OP_PUSH) |
3956 | break; |
3957 | |
3958 | if (ops[i].op == OP_CALL && ops[i].operand[0].type == OPT_LABEL) { |
3959 | const struct parsed_proto *pp; |
3960 | pp = proto_parse(g_fhdr, opr_name(&ops[i], 0), 1); |
3961 | j = pp ? pp->argc_stack : 0; |
3962 | while (i > 0 && j > 0) { |
3963 | i--; |
3964 | if (ops[i].op == OP_PUSH) { |
b2bd20c0 |
3965 | ops[i].flags &= ~(OPF_RMD | OPF_DONE | OPF_NOREGS); |
9af2d373 |
3966 | j--; |
3967 | } |
3968 | } |
3969 | if (j != 0) |
3970 | ferr(&ops[i], "unhandled prologue\n"); |
3971 | |
3972 | // recheck |
3973 | i = g_stack_fsz = ecx_push = 0; |
3974 | while (ops[i].op == OP_PUSH && IS(opr_name(&ops[i], 0), "ecx")) { |
3975 | if (!(ops[i].flags & OPF_RMD)) |
3976 | break; |
3977 | g_stack_fsz += 4; |
3978 | ecx_push++; |
3979 | i++; |
3980 | } |
3981 | } |
3982 | } |
3983 | |
3984 | found = 0; |
3985 | if (ecx_push || esp_sub) |
3986 | { |
3987 | g_sp_frame = 1; |
3988 | |
9af2d373 |
3989 | do { |
3990 | for (; i < opcnt; i++) |
66bdb2b0 |
3991 | if (ops[i].flags & OPF_TAIL) |
9af2d373 |
3992 | break; |
fe18df39 |
3993 | |
9af2d373 |
3994 | j = i - 1; |
3995 | if (i == opcnt && (ops[j].flags & OPF_JMP)) { |
66bdb2b0 |
3996 | if (ops[j].bt_i != -1 || ops[j].btj != NULL) |
3997 | break; |
3998 | i--; |
9af2d373 |
3999 | j--; |
4000 | } |
4001 | |
4002 | if (ecx_push > 0) { |
4003 | for (l = 0; l < ecx_push; l++) { |
4004 | if (ops[j].op == OP_POP && IS(opr_name(&ops[j], 0), "ecx")) |
4005 | /* pop ecx */; |
4006 | else if (ops[j].op == OP_ADD |
4007 | && IS(opr_name(&ops[j], 0), "esp") |
4008 | && ops[j].operand[1].type == OPT_CONST) |
4009 | { |
4010 | /* add esp, N */ |
5e49b270 |
4011 | l += ops[j].operand[1].val / 4 - 1; |
9af2d373 |
4012 | } |
4013 | else |
4014 | ferr(&ops[j], "'pop ecx' expected\n"); |
4015 | |
b2bd20c0 |
4016 | ops[j].flags |= OPF_RMD | OPF_DONE | OPF_NOREGS; |
9af2d373 |
4017 | j--; |
4018 | } |
4019 | if (l != ecx_push) |
4020 | ferr(&ops[j], "epilogue scan failed\n"); |
4021 | |
4022 | found = 1; |
4023 | } |
4024 | |
4025 | if (esp_sub) { |
4026 | if (ops[j].op != OP_ADD |
4027 | || !IS(opr_name(&ops[j], 0), "esp") |
4028 | || ops[j].operand[1].type != OPT_CONST |
4029 | || ops[j].operand[1].val != g_stack_fsz) |
622eb2ef |
4030 | { |
4031 | if (ops[i].op == OP_CALL && ops[i].pp != NULL |
4032 | && ops[i].pp->is_noreturn) |
4033 | { |
4034 | // noreturn tailcall with no epilogue |
4035 | i++; |
4036 | continue; |
4037 | } |
9af2d373 |
4038 | ferr(&ops[j], "'add esp' expected\n"); |
622eb2ef |
4039 | } |
9af2d373 |
4040 | |
b2bd20c0 |
4041 | ops[j].flags |= OPF_RMD | OPF_DONE | OPF_NOREGS; |
9af2d373 |
4042 | ops[j].operand[1].val = 0; // hack for stack arg scanner |
4043 | found = 1; |
4044 | } |
4045 | |
4046 | i++; |
4047 | } while (i < opcnt); |
66bdb2b0 |
4048 | |
4049 | if (!found) |
4050 | ferr(ops, "missing esp epilogue\n"); |
9af2d373 |
4051 | } |
4052 | } |
4053 | |
23fd0b11 |
4054 | // find an instruction that changed opr before i op |
db63af51 |
4055 | // *op_i must be set to -1 by the caller |
865f1aca |
4056 | // *is_caller is set to 1 if one source is determined to be g_func arg |
92d715b6 |
4057 | // returns 1 if found, *op_i is then set to origin |
865f1aca |
4058 | // returns -1 if multiple origins are found |
23fd0b11 |
4059 | static int resolve_origin(int i, const struct parsed_opr *opr, |
92d715b6 |
4060 | int magic, int *op_i, int *is_caller) |
1f84f6b3 |
4061 | { |
4062 | struct label_ref *lr; |
4063 | int ret = 0; |
4064 | |
1f84f6b3 |
4065 | while (1) { |
d7857c3a |
4066 | if (g_labels[i] != NULL) { |
1f84f6b3 |
4067 | lr = &g_label_refs[i]; |
92d715b6 |
4068 | for (; lr != NULL; lr = lr->next) { |
4069 | check_i(&ops[i], lr->i); |
4070 | ret |= resolve_origin(lr->i, opr, magic, op_i, is_caller); |
4071 | } |
1f84f6b3 |
4072 | if (i > 0 && LAST_OP(i - 1)) |
4073 | return ret; |
4074 | } |
4075 | |
4076 | i--; |
92d715b6 |
4077 | if (i < 0) { |
4078 | if (is_caller != NULL) |
4079 | *is_caller = 1; |
1f84f6b3 |
4080 | return -1; |
92d715b6 |
4081 | } |
1f84f6b3 |
4082 | |
4083 | if (ops[i].cc_scratch == magic) |
ebc4dc43 |
4084 | return ret; |
1f84f6b3 |
4085 | ops[i].cc_scratch = magic; |
4086 | |
4087 | if (!(ops[i].flags & OPF_DATA)) |
4088 | continue; |
4089 | if (!is_opr_modified(opr, &ops[i])) |
4090 | continue; |
23fd0b11 |
4091 | |
4092 | if (*op_i >= 0) { |
93b5bd18 |
4093 | if (*op_i == i || are_ops_same(&ops[*op_i], &ops[i])) |
ebc4dc43 |
4094 | return ret | 1; |
4095 | |
23fd0b11 |
4096 | return -1; |
4097 | } |
4098 | |
4099 | *op_i = i; |
ebc4dc43 |
4100 | return ret | 1; |
23fd0b11 |
4101 | } |
4102 | } |
4103 | |
db63af51 |
4104 | // find an instruction that previously referenced opr |
4105 | // if multiple results are found - fail |
4106 | // *op_i must be set to -1 by the caller |
4107 | // returns 1 if found, *op_i is then set to referencer insn |
4108 | static int resolve_last_ref(int i, const struct parsed_opr *opr, |
4109 | int magic, int *op_i) |
4110 | { |
4111 | struct label_ref *lr; |
4112 | int ret = 0; |
4113 | |
db63af51 |
4114 | while (1) { |
4115 | if (g_labels[i] != NULL) { |
4116 | lr = &g_label_refs[i]; |
4117 | for (; lr != NULL; lr = lr->next) { |
4118 | check_i(&ops[i], lr->i); |
4119 | ret |= resolve_last_ref(lr->i, opr, magic, op_i); |
4120 | } |
4121 | if (i > 0 && LAST_OP(i - 1)) |
4122 | return ret; |
4123 | } |
4124 | |
4125 | i--; |
4126 | if (i < 0) |
4127 | return -1; |
4128 | |
4129 | if (ops[i].cc_scratch == magic) |
4130 | return 0; |
4131 | ops[i].cc_scratch = magic; |
4132 | |
4133 | if (!is_opr_referenced(opr, &ops[i])) |
4134 | continue; |
4135 | |
4136 | if (*op_i >= 0) |
4137 | return -1; |
4138 | |
4139 | *op_i = i; |
4140 | return 1; |
4141 | } |
4142 | } |
4143 | |
16057ce1 |
4144 | // adjust datap of all reachable 'op' insns when moving back |
4145 | // returns 1 if at least 1 op was found |
4146 | // returns -1 if path without an op was found |
4147 | static int adjust_prev_op(int i, enum op_op op, int magic, void *datap) |
4148 | { |
4149 | struct label_ref *lr; |
4150 | int ret = 0; |
4151 | |
4152 | if (ops[i].cc_scratch == magic) |
4153 | return 0; |
4154 | ops[i].cc_scratch = magic; |
4155 | |
4156 | while (1) { |
4157 | if (g_labels[i] != NULL) { |
4158 | lr = &g_label_refs[i]; |
4159 | for (; lr != NULL; lr = lr->next) { |
4160 | check_i(&ops[i], lr->i); |
4161 | ret |= adjust_prev_op(lr->i, op, magic, datap); |
4162 | } |
4163 | if (i > 0 && LAST_OP(i - 1)) |
4164 | return ret; |
4165 | } |
4166 | |
4167 | i--; |
4168 | if (i < 0) |
4169 | return -1; |
4170 | |
4171 | if (ops[i].cc_scratch == magic) |
4172 | return 0; |
4173 | ops[i].cc_scratch = magic; |
4174 | |
4175 | if (ops[i].op != op) |
4176 | continue; |
4177 | |
4178 | ops[i].datap = datap; |
4179 | return 1; |
4180 | } |
4181 | } |
4182 | |
db63af51 |
4183 | // find next instruction that reads opr |
db63af51 |
4184 | // *op_i must be set to -1 by the caller |
b2bd20c0 |
4185 | // on return, *op_i is set to first referencer insn |
4186 | // returns 1 if exactly 1 referencer is found |
db63af51 |
4187 | static int find_next_read(int i, int opcnt, |
4188 | const struct parsed_opr *opr, int magic, int *op_i) |
4189 | { |
4190 | struct parsed_op *po; |
4191 | int j, ret = 0; |
4192 | |
4193 | for (; i < opcnt; i++) |
4194 | { |
4195 | if (ops[i].cc_scratch == magic) |
b2bd20c0 |
4196 | return ret; |
db63af51 |
4197 | ops[i].cc_scratch = magic; |
4198 | |
4199 | po = &ops[i]; |
4200 | if ((po->flags & OPF_JMP) && po->op != OP_CALL) { |
4201 | if (po->btj != NULL) { |
4202 | // jumptable |
4203 | for (j = 0; j < po->btj->count; j++) { |
4204 | check_i(po, po->btj->d[j].bt_i); |
4205 | ret |= find_next_read(po->btj->d[j].bt_i, opcnt, opr, |
4206 | magic, op_i); |
4207 | } |
4208 | return ret; |
4209 | } |
4210 | |
4211 | if (po->flags & OPF_RMD) |
4212 | continue; |
4213 | check_i(po, po->bt_i); |
4214 | if (po->flags & OPF_CJMP) { |
b2bd20c0 |
4215 | ret |= find_next_read(po->bt_i, opcnt, opr, magic, op_i); |
db63af51 |
4216 | if (ret < 0) |
4217 | return ret; |
4218 | } |
b2bd20c0 |
4219 | else |
4220 | i = po->bt_i - 1; |
db63af51 |
4221 | continue; |
4222 | } |
4223 | |
4224 | if (!is_opr_read(opr, po)) { |
16057ce1 |
4225 | int full_opr = 1; |
4226 | if (opr->type == OPT_REG && po->operand[0].type == OPT_REG |
4227 | && opr->reg == po->operand[0].reg && (po->flags & OPF_DATA)) |
acd03176 |
4228 | { |
16057ce1 |
4229 | full_opr = po->operand[0].lmod >= opr->lmod; |
4230 | } |
4231 | if (is_opr_modified(opr, po) && full_opr) { |
db63af51 |
4232 | // it's overwritten |
b2bd20c0 |
4233 | return ret; |
acd03176 |
4234 | } |
db63af51 |
4235 | if (po->flags & OPF_TAIL) |
b2bd20c0 |
4236 | return ret; |
db63af51 |
4237 | continue; |
4238 | } |
4239 | |
4240 | if (*op_i >= 0) |
4241 | return -1; |
4242 | |
4243 | *op_i = i; |
4244 | return 1; |
4245 | } |
4246 | |
4247 | return 0; |
4248 | } |
4249 | |
16057ce1 |
4250 | // find next instruction that reads opr |
4251 | // *op_i must be set to -1 by the caller |
4252 | // on return, *op_i is set to first flag user insn |
4253 | // returns 1 if exactly 1 flag user is found |
4254 | static int find_next_flag_use(int i, int opcnt, int magic, int *op_i) |
4255 | { |
4256 | struct parsed_op *po; |
4257 | int j, ret = 0; |
4258 | |
4259 | for (; i < opcnt; i++) |
4260 | { |
4261 | if (ops[i].cc_scratch == magic) |
4262 | return ret; |
4263 | ops[i].cc_scratch = magic; |
4264 | |
4265 | po = &ops[i]; |
4266 | if (po->op == OP_CALL) |
4267 | return -1; |
4268 | if (po->flags & OPF_JMP) { |
4269 | if (po->btj != NULL) { |
4270 | // jumptable |
4271 | for (j = 0; j < po->btj->count; j++) { |
4272 | check_i(po, po->btj->d[j].bt_i); |
4273 | ret |= find_next_flag_use(po->btj->d[j].bt_i, opcnt, |
4274 | magic, op_i); |
4275 | } |
4276 | return ret; |
4277 | } |
4278 | |
4279 | if (po->flags & OPF_RMD) |
4280 | continue; |
4281 | check_i(po, po->bt_i); |
4282 | if (po->flags & OPF_CJMP) |
4283 | goto found; |
4284 | else |
4285 | i = po->bt_i - 1; |
4286 | continue; |
4287 | } |
4288 | |
4289 | if (!(po->flags & OPF_CC)) { |
4290 | if (po->flags & OPF_FLAGS) |
4291 | // flags changed |
4292 | return ret; |
4293 | if (po->flags & OPF_TAIL) |
4294 | return ret; |
4295 | continue; |
4296 | } |
4297 | |
4298 | found: |
4299 | if (*op_i >= 0) |
4300 | return -1; |
4301 | |
4302 | *op_i = i; |
4303 | return 1; |
4304 | } |
4305 | |
4306 | return 0; |
4307 | } |
4308 | |
23fd0b11 |
4309 | static int try_resolve_const(int i, const struct parsed_opr *opr, |
4310 | int magic, unsigned int *val) |
4311 | { |
4312 | int s_i = -1; |
92d715b6 |
4313 | int ret; |
23fd0b11 |
4314 | |
92d715b6 |
4315 | ret = resolve_origin(i, opr, magic, &s_i, NULL); |
23fd0b11 |
4316 | if (ret == 1) { |
4317 | i = s_i; |
1f84f6b3 |
4318 | if (ops[i].op != OP_MOV && ops[i].operand[1].type != OPT_CONST) |
4319 | return -1; |
4320 | |
4321 | *val = ops[i].operand[1].val; |
4322 | return 1; |
4323 | } |
23fd0b11 |
4324 | |
4325 | return -1; |
1f84f6b3 |
4326 | } |
4327 | |
16057ce1 |
4328 | static int resolve_used_bits(int i, int opcnt, int reg, |
4329 | int *mask, int *is_z_check) |
4330 | { |
4331 | struct parsed_opr opr = OPR_INIT(OPT_REG, OPLM_WORD, reg); |
4332 | int j = -1, k = -1; |
4333 | int ret; |
4334 | |
4335 | ret = find_next_read(i, opcnt, &opr, i + opcnt * 20, &j); |
4336 | if (ret != 1) |
4337 | return -1; |
4338 | |
4339 | find_next_read(j + 1, opcnt, &opr, i + opcnt * 20 + 1, &k); |
4340 | if (k != -1) { |
4341 | fnote(&ops[j], "(first read)\n"); |
4342 | ferr(&ops[k], "TODO: bit resolve: multiple readers\n"); |
4343 | } |
4344 | |
4345 | if (ops[j].op != OP_TEST || ops[j].operand[1].type != OPT_CONST) |
4346 | ferr(&ops[j], "TODO: bit resolve: not a const test\n"); |
4347 | |
4348 | ferr_assert(&ops[j], ops[j].operand[0].type == OPT_REG); |
4349 | ferr_assert(&ops[j], ops[j].operand[0].reg == reg); |
4350 | |
4351 | *mask = ops[j].operand[1].val; |
4352 | if (ops[j].operand[0].lmod == OPLM_BYTE |
4353 | && ops[j].operand[0].name[1] == 'h') |
4354 | { |
4355 | *mask <<= 8; |
4356 | } |
4357 | ferr_assert(&ops[j], (*mask & ~0xffff) == 0); |
4358 | |
4359 | *is_z_check = 0; |
4360 | ret = find_next_flag_use(j + 1, opcnt, i + opcnt * 20 + 2, &k); |
4361 | if (ret == 1) |
4362 | *is_z_check = ops[k].pfo == PFO_Z; |
4363 | |
4364 | return 0; |
4365 | } |
4366 | |
93b5bd18 |
4367 | static const struct parsed_proto *resolve_deref(int i, int magic, |
4368 | struct parsed_opr *opr, int level) |
4369 | { |
4370 | struct parsed_opr opr_s = OPR_INIT(OPT_REG, OPLM_DWORD, 0); |
4371 | const struct parsed_proto *pp = NULL; |
4372 | int from_caller = 0; |
4373 | char s_reg[4]; |
4374 | int offset = 0; |
4375 | int len = 0; |
4376 | int j = -1; |
4377 | int k = -1; |
4378 | int reg; |
4379 | int ret; |
4380 | |
4381 | ret = sscanf(opr->name, "%3s+%x%n", s_reg, &offset, &len); |
4382 | if (ret != 2 || len != strlen(opr->name)) { |
4383 | ret = sscanf(opr->name, "%3s%n", s_reg, &len); |
4384 | if (ret != 1 || len != strlen(opr->name)) |
4385 | return NULL; |
4386 | } |
4387 | |
4388 | reg = char_array_i(regs_r32, ARRAY_SIZE(regs_r32), s_reg); |
4389 | if (reg < 0) |
4390 | return NULL; |
4391 | |
4392 | opr_s.reg = reg; |
4393 | ret = resolve_origin(i, &opr_s, i + magic, &j, NULL); |
4394 | if (ret != 1) |
4395 | return NULL; |
4396 | |
4397 | if (ops[j].op == OP_MOV && ops[j].operand[1].type == OPT_REGMEM |
4398 | && strlen(ops[j].operand[1].name) == 3 |
4399 | && ops[j].operand[0].lmod == OPLM_DWORD |
4400 | && ops[j].pp == NULL // no hint |
4401 | && level == 0) |
4402 | { |
4403 | // allow one simple dereference (com/directx) |
4404 | reg = char_array_i(regs_r32, ARRAY_SIZE(regs_r32), |
4405 | ops[j].operand[1].name); |
4406 | if (reg < 0) |
4407 | return NULL; |
4408 | opr_s.reg = reg; |
4409 | ret = resolve_origin(j, &opr_s, j + magic, &k, NULL); |
4410 | if (ret != 1) |
4411 | return NULL; |
4412 | j = k; |
4413 | } |
4414 | if (ops[j].op != OP_MOV || ops[j].operand[0].lmod != OPLM_DWORD) |
4415 | return NULL; |
4416 | |
4417 | if (ops[j].pp != NULL) { |
4418 | // type hint in asm |
4419 | pp = ops[j].pp; |
4420 | } |
4421 | else if (ops[j].operand[1].type == OPT_REGMEM) { |
4422 | pp = try_recover_pp(&ops[j], &ops[j].operand[1], 0, NULL); |
4423 | if (pp == NULL) { |
4424 | // maybe structure ptr in structure |
4425 | pp = resolve_deref(j, magic, &ops[j].operand[1], level + 1); |
4426 | } |
4427 | } |
4428 | else if (ops[j].operand[1].type == OPT_LABEL) |
4429 | pp = proto_parse(g_fhdr, ops[j].operand[1].name, g_quiet_pp); |
4430 | else if (ops[j].operand[1].type == OPT_REG) { |
4431 | // maybe arg reg? |
4432 | k = -1; |
4433 | ret = resolve_origin(j, &ops[j].operand[1], i + magic, |
4434 | &k, &from_caller); |
4435 | if (ret != 1 && from_caller && k == -1 && g_func_pp != NULL) { |
4436 | for (k = 0; k < g_func_pp->argc; k++) { |
4437 | if (g_func_pp->arg[k].reg == NULL) |
4438 | continue; |
4439 | if (IS(g_func_pp->arg[k].reg, ops[j].operand[1].name)) { |
4440 | pp = g_func_pp->arg[k].pp; |
4441 | break; |
4442 | } |
4443 | } |
4444 | } |
4445 | } |
4446 | |
4447 | if (pp == NULL) |
4448 | return NULL; |
4449 | if (pp->is_func || pp->is_fptr || !pp->type.is_struct) { |
4450 | if (offset != 0) |
4451 | ferr(&ops[j], "expected struct, got '%s %s'\n", |
4452 | pp->type.name, pp->name); |
4453 | return NULL; |
4454 | } |
4455 | |
4456 | return proto_lookup_struct(g_fhdr, pp->type.name, offset); |
4457 | } |
4458 | |
865f1aca |
4459 | static const struct parsed_proto *resolve_icall(int i, int opcnt, |
4460 | int *pp_i, int *multi_src) |
4461 | { |
4462 | const struct parsed_proto *pp = NULL; |
4463 | int search_advice = 0; |
865f1aca |
4464 | |
4465 | *multi_src = 0; |
4466 | *pp_i = -1; |
4467 | |
4468 | switch (ops[i].operand[0].type) { |
4469 | case OPT_REGMEM: |
4470 | // try to resolve struct member calls |
93b5bd18 |
4471 | pp = resolve_deref(i, i + opcnt * 19, &ops[i].operand[0], 0); |
4472 | if (pp != NULL) |
865f1aca |
4473 | break; |
865f1aca |
4474 | // fallthrough |
4475 | case OPT_LABEL: |
4476 | case OPT_OFFSET: |
93b5bd18 |
4477 | pp = try_recover_pp(&ops[i], &ops[i].operand[0], |
4478 | 1, &search_advice); |
865f1aca |
4479 | if (!search_advice) |
4480 | break; |
4481 | // fallthrough |
4482 | default: |
4483 | scan_for_call_type(i, &ops[i].operand[0], i + opcnt * 9, &pp, |
4484 | pp_i, multi_src); |
4485 | break; |
4486 | } |
4487 | |
4488 | return pp; |
4489 | } |
4490 | |
26677139 |
4491 | static struct parsed_proto *process_call_early(int i, int opcnt, |
4492 | int *adj_i) |
4493 | { |
4494 | struct parsed_op *po = &ops[i]; |
4495 | struct parsed_proto *pp; |
4496 | int multipath = 0; |
4497 | int adj = 0; |
bfacdc83 |
4498 | int j, ret; |
26677139 |
4499 | |
4500 | pp = po->pp; |
4501 | if (pp == NULL || pp->is_vararg || pp->argc_reg != 0) |
4502 | // leave for later |
4503 | return NULL; |
4504 | |
4505 | // look for and make use of esp adjust |
4506 | *adj_i = ret = -1; |
4507 | if (!pp->is_stdcall && pp->argc_stack > 0) |
4508 | ret = scan_for_esp_adjust(i + 1, opcnt, |
ee2361b9 |
4509 | pp->argc_stack * 4, &adj, &multipath, 0); |
26677139 |
4510 | if (ret >= 0) { |
4511 | if (pp->argc_stack > adj / 4) |
4512 | return NULL; |
4513 | if (multipath) |
4514 | return NULL; |
bfacdc83 |
4515 | if (ops[ret].op == OP_POP) { |
4516 | for (j = 1; j < adj / 4; j++) { |
4517 | if (ops[ret + j].op != OP_POP |
4518 | || ops[ret + j].operand[0].reg != xCX) |
4519 | { |
4520 | return NULL; |
4521 | } |
4522 | } |
4523 | } |
26677139 |
4524 | } |
4525 | |
4526 | *adj_i = ret; |
4527 | return pp; |
4528 | } |
4529 | |
9af2d373 |
4530 | static struct parsed_proto *process_call(int i, int opcnt) |
4531 | { |
4532 | struct parsed_op *po = &ops[i]; |
4533 | const struct parsed_proto *pp_c; |
4534 | struct parsed_proto *pp; |
4535 | const char *tmpname; |
db63af51 |
4536 | int call_i = -1, ref_i = -1; |
26677139 |
4537 | int adj = 0, multipath = 0; |
9af2d373 |
4538 | int ret, arg; |
4539 | |
4540 | tmpname = opr_name(po, 0); |
4541 | pp = po->pp; |
4542 | if (pp == NULL) |
4543 | { |
4544 | // indirect call |
db63af51 |
4545 | pp_c = resolve_icall(i, opcnt, &call_i, &multipath); |
9af2d373 |
4546 | if (pp_c != NULL) { |
4547 | if (!pp_c->is_func && !pp_c->is_fptr) |
4548 | ferr(po, "call to non-func: %s\n", pp_c->name); |
4549 | pp = proto_clone(pp_c); |
4550 | my_assert_not(pp, NULL); |
26677139 |
4551 | if (multipath) |
9af2d373 |
4552 | // not resolved just to single func |
4553 | pp->is_fptr = 1; |
4554 | |
4555 | switch (po->operand[0].type) { |
4556 | case OPT_REG: |
4557 | // we resolved this call and no longer need the register |
4558 | po->regmask_src &= ~(1 << po->operand[0].reg); |
db63af51 |
4559 | |
4560 | if (!multipath && i != call_i && ops[call_i].op == OP_MOV |
4561 | && ops[call_i].operand[1].type == OPT_LABEL) |
4562 | { |
4563 | // no other source users? |
e83ea7ed |
4564 | ret = resolve_last_ref(i, &po->operand[0], i + opcnt * 10, |
db63af51 |
4565 | &ref_i); |
4566 | if (ret == 1 && call_i == ref_i) { |
4567 | // and nothing uses it after us? |
4568 | ref_i = -1; |
b2bd20c0 |
4569 | find_next_read(i + 1, opcnt, &po->operand[0], |
4570 | i + opcnt * 11, &ref_i); |
4571 | if (ref_i == -1) |
db63af51 |
4572 | // then also don't need the source mov |
b2bd20c0 |
4573 | ops[call_i].flags |= OPF_RMD | OPF_NOREGS; |
db63af51 |
4574 | } |
4575 | } |
9af2d373 |
4576 | break; |
4577 | case OPT_REGMEM: |
4578 | pp->is_fptr = 1; |
4579 | break; |
4580 | default: |
4581 | break; |
4582 | } |
4583 | } |
4584 | if (pp == NULL) { |
4585 | pp = calloc(1, sizeof(*pp)); |
4586 | my_assert_not(pp, NULL); |
4587 | |
4588 | pp->is_fptr = 1; |
ee2361b9 |
4589 | ret = scan_for_esp_adjust(i + 1, opcnt, |
bfacdc83 |
4590 | -1, &adj, &multipath, 0); |
26677139 |
4591 | if (ret < 0 || adj < 0) { |
9af2d373 |
4592 | if (!g_allow_regfunc) |
4593 | ferr(po, "non-__cdecl indirect call unhandled yet\n"); |
4594 | pp->is_unresolved = 1; |
26677139 |
4595 | adj = 0; |
9af2d373 |
4596 | } |
26677139 |
4597 | adj /= 4; |
4598 | if (adj > ARRAY_SIZE(pp->arg)) |
4599 | ferr(po, "esp adjust too large: %d\n", adj); |
9af2d373 |
4600 | pp->ret_type.name = strdup("int"); |
26677139 |
4601 | pp->argc = pp->argc_stack = adj; |
9af2d373 |
4602 | for (arg = 0; arg < pp->argc; arg++) |
4603 | pp->arg[arg].type.name = strdup("int"); |
4604 | } |
4605 | po->pp = pp; |
4606 | } |
4607 | |
4608 | // look for and make use of esp adjust |
91ca764a |
4609 | multipath = 0; |
9af2d373 |
4610 | ret = -1; |
bfacdc83 |
4611 | if (!pp->is_stdcall && pp->argc_stack > 0) { |
4612 | int adj_expect = pp->is_vararg ? -1 : pp->argc_stack * 4; |
9af2d373 |
4613 | ret = scan_for_esp_adjust(i + 1, opcnt, |
bfacdc83 |
4614 | adj_expect, &adj, &multipath, 0); |
4615 | } |
9af2d373 |
4616 | if (ret >= 0) { |
4617 | if (pp->is_vararg) { |
26677139 |
4618 | if (adj / 4 < pp->argc_stack) { |
4619 | fnote(po, "(this call)\n"); |
4620 | ferr(&ops[ret], "esp adjust is too small: %x < %x\n", |
4621 | adj, pp->argc_stack * 4); |
4622 | } |
9af2d373 |
4623 | // modify pp to make it have varargs as normal args |
4624 | arg = pp->argc; |
26677139 |
4625 | pp->argc += adj / 4 - pp->argc_stack; |
9af2d373 |
4626 | for (; arg < pp->argc; arg++) { |
4627 | pp->arg[arg].type.name = strdup("int"); |
4628 | pp->argc_stack++; |
4629 | } |
4630 | if (pp->argc > ARRAY_SIZE(pp->arg)) |
4631 | ferr(po, "too many args for '%s'\n", tmpname); |
4632 | } |
26677139 |
4633 | if (pp->argc_stack > adj / 4) { |
9af2d373 |
4634 | fnote(po, "(this call)\n"); |
4635 | ferr(&ops[ret], "stack tracking failed for '%s': %x %x\n", |
26677139 |
4636 | tmpname, pp->argc_stack * 4, adj); |
9af2d373 |
4637 | } |
4638 | |
ee2361b9 |
4639 | scan_for_esp_adjust(i + 1, opcnt, |
4640 | pp->argc_stack * 4, &adj, &multipath, 1); |
9af2d373 |
4641 | } |
4642 | else if (pp->is_vararg) |
4643 | ferr(po, "missing esp_adjust for vararg func '%s'\n", |
4644 | pp->name); |
4645 | |
4646 | return pp; |
4647 | } |
4648 | |
30620174 |
4649 | static int collect_call_args_no_push(int i, struct parsed_proto *pp, |
4650 | int *regmask_ffca) |
4651 | { |
4652 | struct parsed_op *po; |
4653 | int offset = 0; |
4654 | int base_arg; |
4655 | int j, arg; |
4656 | int ret; |
4657 | |
4658 | for (base_arg = 0; base_arg < pp->argc; base_arg++) |
4659 | if (pp->arg[base_arg].reg == NULL) |
4660 | break; |
4661 | |
4662 | for (j = i; j > 0; ) |
4663 | { |
4664 | ferr_assert(&ops[j], g_labels[j] == NULL); |
4665 | j--; |
4666 | |
4667 | po = &ops[j]; |
4668 | ferr_assert(po, po->op != OP_PUSH); |
4669 | if (po->op == OP_FST) |
4670 | { |
4671 | if (po->operand[0].type != OPT_REGMEM) |
4672 | continue; |
4673 | ret = parse_stack_esp_offset(po, po->operand[0].name, &offset); |
4674 | if (ret != 0) |
4675 | continue; |
4676 | if (offset < 0 || offset >= pp->argc_stack * 4 || (offset & 3)) |
4677 | ferr(po, "bad offset %d (%d args)\n", offset, pp->argc_stack); |
4678 | |
4679 | arg = base_arg + offset / 4; |
4680 | po->p_argnext = -1; |
4681 | po->p_argnum = arg + 1; |
4682 | ferr_assert(po, pp->arg[arg].datap == NULL); |
4683 | pp->arg[arg].datap = po; |
4684 | po->flags |= OPF_DONE | OPF_FARGNR | OPF_FARG; |
4685 | if (regmask_ffca != NULL) |
4686 | *regmask_ffca |= 1 << arg; |
4687 | } |
4688 | else if (po->op == OP_SUB && po->operand[0].reg == xSP |
4689 | && po->operand[1].type == OPT_CONST) |
4690 | { |
4691 | po->flags |= OPF_RMD | OPF_DONE | OPF_FARGNR | OPF_FARG; |
4692 | break; |
4693 | } |
4694 | } |
4695 | |
4696 | for (arg = base_arg; arg < pp->argc; arg++) { |
4697 | ferr_assert(&ops[i], pp->arg[arg].reg == NULL); |
4698 | po = pp->arg[arg].datap; |
4699 | if (po == NULL) |
4700 | ferr(&ops[i], "arg %d/%d not found\n", arg, pp->argc); |
4701 | if (po->operand[0].lmod == OPLM_QWORD) |
4702 | arg++; |
4703 | } |
4704 | |
4705 | return 0; |
4706 | } |
4707 | |
4708 | static int collect_call_args_early(int i, struct parsed_proto *pp, |
4709 | int *regmask, int *regmask_ffca) |
26677139 |
4710 | { |
30620174 |
4711 | struct parsed_op *po; |
26677139 |
4712 | int arg, ret; |
4713 | int j; |
4714 | |
4715 | for (arg = 0; arg < pp->argc; arg++) |
4716 | if (pp->arg[arg].reg == NULL) |
4717 | break; |
4718 | |
4719 | // first see if it can be easily done |
4720 | for (j = i; j > 0 && arg < pp->argc; ) |
4721 | { |
4722 | if (g_labels[j] != NULL) |
4723 | return -1; |
4724 | j--; |
4725 | |
30620174 |
4726 | po = &ops[j]; |
4727 | if (po->op == OP_CALL) |
26677139 |
4728 | return -1; |
30620174 |
4729 | else if (po->op == OP_ADD && po->operand[0].reg == xSP) |
26677139 |
4730 | return -1; |
30620174 |
4731 | else if (po->op == OP_POP) |
26677139 |
4732 | return -1; |
30620174 |
4733 | else if (po->flags & OPF_CJMP) |
26677139 |
4734 | return -1; |
30620174 |
4735 | else if (po->op == OP_PUSH) { |
4736 | if (po->flags & (OPF_FARG|OPF_FARGNR)) |
26677139 |
4737 | return -1; |
622eb2ef |
4738 | if (!g_header_mode) { |
30620174 |
4739 | ret = scan_for_mod(po, j + 1, i, 1); |
622eb2ef |
4740 | if (ret >= 0) |
4741 | return -1; |
4742 | } |
26677139 |
4743 | |
4744 | if (pp->arg[arg].type.is_va_list) |
4745 | return -1; |
4746 | |
4747 | // next arg |
4748 | for (arg++; arg < pp->argc; arg++) |
4749 | if (pp->arg[arg].reg == NULL) |
4750 | break; |
4751 | } |
30620174 |
4752 | else if (po->op == OP_SUB && po->operand[0].reg == xSP |
4753 | && po->operand[1].type == OPT_CONST) |
4754 | { |
4755 | if (po->flags & (OPF_RMD|OPF_DONE)) |
4756 | return -1; |
4757 | if (po->operand[1].val != pp->argc_stack * 4) |
4758 | ferr(po, "unexpected esp adjust: %d\n", |
4759 | po->operand[1].val * 4); |
4760 | ferr_assert(po, pp->argc - arg == pp->argc_stack); |
4761 | return collect_call_args_no_push(i, pp, regmask_ffca); |
4762 | } |
26677139 |
4763 | } |
4764 | |
4765 | if (arg < pp->argc) |
4766 | return -1; |
4767 | |
4768 | // now do it |
4769 | for (arg = 0; arg < pp->argc; arg++) |
4770 | if (pp->arg[arg].reg == NULL) |
4771 | break; |
4772 | |
4773 | for (j = i; j > 0 && arg < pp->argc; ) |
4774 | { |
4775 | j--; |
4776 | |
4777 | if (ops[j].op == OP_PUSH) |
4778 | { |
4779 | ops[j].p_argnext = -1; |
4780 | ferr_assert(&ops[j], pp->arg[arg].datap == NULL); |
4781 | pp->arg[arg].datap = &ops[j]; |
4782 | |
30620174 |
4783 | if (regmask != NULL && ops[j].operand[0].type == OPT_REG) |
26677139 |
4784 | *regmask |= 1 << ops[j].operand[0].reg; |
4785 | |
5e49b270 |
4786 | ops[j].flags |= OPF_RMD | OPF_DONE | OPF_FARGNR | OPF_FARG; |
26677139 |
4787 | ops[j].flags &= ~OPF_RSAVE; |
4788 | |
4789 | // next arg |
4790 | for (arg++; arg < pp->argc; arg++) |
4791 | if (pp->arg[arg].reg == NULL) |
4792 | break; |
4793 | } |
4794 | } |
4795 | |
4796 | return 0; |
4797 | } |
4798 | |
8c83cc48 |
4799 | static int sync_argnum(struct parsed_op *po, int argnum) |
4800 | { |
4801 | struct parsed_op *po_tmp; |
4802 | |
4803 | // see if other branches don't have higher argnum |
4804 | for (po_tmp = po; po_tmp != NULL; ) { |
4805 | if (argnum < po_tmp->p_argnum) |
4806 | argnum = po_tmp->p_argnum; |
4807 | // note: p_argnext is active on current collect_call_args only |
4808 | po_tmp = po_tmp->p_argnext >= 0 ? &ops[po_tmp->p_argnext] : NULL; |
4809 | } |
4810 | |
4811 | // make all argnums consistent |
4812 | for (po_tmp = po; po_tmp != NULL; ) { |
4813 | if (po_tmp->p_argnum != 0) |
4814 | po_tmp->p_argnum = argnum; |
4815 | po_tmp = po_tmp->p_argnext >= 0 ? &ops[po_tmp->p_argnext] : NULL; |
4816 | } |
4817 | |
4818 | return argnum; |
4819 | } |
4820 | |
89ff3147 |
4821 | static int collect_call_args_r(struct parsed_op *po, int i, |
8c83cc48 |
4822 | struct parsed_proto *pp, int *regmask, int *arg_grp, |
4823 | int arg, int argnum, int magic, int need_op_saving, int may_reuse) |
e56ab892 |
4824 | { |
4825 | struct parsed_proto *pp_tmp; |
3a5101d7 |
4826 | struct parsed_op *po_tmp; |
e56ab892 |
4827 | struct label_ref *lr; |
2b43685d |
4828 | int need_to_save_current; |
3a5101d7 |
4829 | int arg_grp_current = 0; |
4830 | int save_args_seen = 0; |
e56ab892 |
4831 | int ret = 0; |
5f70a34f |
4832 | int reg; |
23fd0b11 |
4833 | char buf[32]; |
4834 | int j, k; |
e56ab892 |
4835 | |
a3684be1 |
4836 | if (i < 0) { |
a2c1d768 |
4837 | ferr(po, "dead label encountered\n"); |
a3684be1 |
4838 | return -1; |
4839 | } |
e56ab892 |
4840 | |
8c83cc48 |
4841 | for (; arg < pp->argc; arg++, argnum++) |
e56ab892 |
4842 | if (pp->arg[arg].reg == NULL) |
4843 | break; |
a3684be1 |
4844 | magic = (magic & 0xffffff) | (arg << 24); |
e56ab892 |
4845 | |
89ff3147 |
4846 | for (j = i; j >= 0 && (arg < pp->argc || pp->is_unresolved); ) |
e56ab892 |
4847 | { |
a3684be1 |
4848 | if (((ops[j].cc_scratch ^ magic) & 0xffffff) == 0) { |
4849 | if (ops[j].cc_scratch != magic) { |
4850 | ferr(&ops[j], "arg collect hit same path with diff args for %s\n", |
4851 | pp->name); |
4852 | return -1; |
4853 | } |
4854 | // ok: have already been here |
4855 | return 0; |
4856 | } |
4857 | ops[j].cc_scratch = magic; |
4858 | |
d7857c3a |
4859 | if (g_labels[j] != NULL && g_label_refs[j].i != -1) { |
e56ab892 |
4860 | lr = &g_label_refs[j]; |
4861 | if (lr->next != NULL) |
4862 | need_op_saving = 1; |
a652aa9f |
4863 | for (; lr->next; lr = lr->next) { |
92d715b6 |
4864 | check_i(&ops[j], lr->i); |
5c024ef7 |
4865 | if ((ops[lr->i].flags & (OPF_JMP|OPF_CJMP)) != OPF_JMP) |
a652aa9f |
4866 | may_reuse = 1; |
8c83cc48 |
4867 | ret = collect_call_args_r(po, lr->i, pp, regmask, arg_grp, |
4868 | arg, argnum, magic, need_op_saving, may_reuse); |
a3684be1 |
4869 | if (ret < 0) |
4870 | return ret; |
a652aa9f |
4871 | } |
e56ab892 |
4872 | |
92d715b6 |
4873 | check_i(&ops[j], lr->i); |
5c024ef7 |
4874 | if ((ops[lr->i].flags & (OPF_JMP|OPF_CJMP)) != OPF_JMP) |
a652aa9f |
4875 | may_reuse = 1; |
de50b98b |
4876 | if (j > 0 && LAST_OP(j - 1)) { |
e56ab892 |
4877 | // follow last branch in reverse |
4878 | j = lr->i; |
4879 | continue; |
4880 | } |
4881 | need_op_saving = 1; |
8c83cc48 |
4882 | ret = collect_call_args_r(po, lr->i, pp, regmask, arg_grp, |
4883 | arg, argnum, magic, need_op_saving, may_reuse); |
a3684be1 |
4884 | if (ret < 0) |
4885 | return ret; |
e56ab892 |
4886 | } |
4887 | j--; |
4888 | |
4889 | if (ops[j].op == OP_CALL) |
4890 | { |
89ff3147 |
4891 | if (pp->is_unresolved) |
4892 | break; |
4893 | |
092f64e1 |
4894 | pp_tmp = ops[j].pp; |
e56ab892 |
4895 | if (pp_tmp == NULL) |
7ae48d73 |
4896 | ferr(po, "arg collect hit unparsed call '%s'\n", |
4897 | ops[j].operand[0].name); |
a652aa9f |
4898 | if (may_reuse && pp_tmp->argc_stack > 0) |
de50b98b |
4899 | ferr(po, "arg collect %d/%d hit '%s' with %d stack args\n", |
4900 | arg, pp->argc, opr_name(&ops[j], 0), pp_tmp->argc_stack); |
e56ab892 |
4901 | } |
fdd5548a |
4902 | // esp adjust of 0 means we collected it before |
4903 | else if (ops[j].op == OP_ADD && ops[j].operand[0].reg == xSP |
4904 | && (ops[j].operand[1].type != OPT_CONST |
4905 | || ops[j].operand[1].val != 0)) |
4906 | { |
89ff3147 |
4907 | if (pp->is_unresolved) |
4908 | break; |
4909 | |
2b70f6d3 |
4910 | fnote(po, "(this call)\n"); |
4911 | ferr(&ops[j], "arg collect %d/%d hit esp adjust of %d\n", |
fdd5548a |
4912 | arg, pp->argc, ops[j].operand[1].val); |
de50b98b |
4913 | } |
5e49b270 |
4914 | else if (ops[j].op == OP_POP && !(ops[j].flags & OPF_DONE)) |
9af2d373 |
4915 | { |
89ff3147 |
4916 | if (pp->is_unresolved) |
4917 | break; |
4918 | |
2b70f6d3 |
4919 | fnote(po, "(this call)\n"); |
4920 | ferr(&ops[j], "arg collect %d/%d hit pop\n", arg, pp->argc); |
de50b98b |
4921 | } |
5c024ef7 |
4922 | else if (ops[j].flags & OPF_CJMP) |
de50b98b |
4923 | { |
89ff3147 |
4924 | if (pp->is_unresolved) |
4925 | break; |
4926 | |
a652aa9f |
4927 | may_reuse = 1; |
de50b98b |
4928 | } |
91ca764a |
4929 | else if (ops[j].op == OP_PUSH |
4930 | && !(ops[j].flags & (OPF_FARGNR|OPF_DONE))) |
e56ab892 |
4931 | { |
89ff3147 |
4932 | if (pp->is_unresolved && (ops[j].flags & OPF_RMD)) |
4933 | break; |
4934 | |
3a5101d7 |
4935 | ops[j].p_argnext = -1; |
4936 | po_tmp = pp->arg[arg].datap; |
4937 | if (po_tmp != NULL) |
4938 | ops[j].p_argnext = po_tmp - ops; |
e56ab892 |
4939 | pp->arg[arg].datap = &ops[j]; |
3a5101d7 |
4940 | |
8c83cc48 |
4941 | argnum = sync_argnum(&ops[j], argnum); |
4942 | |
2b43685d |
4943 | need_to_save_current = 0; |
5f70a34f |
4944 | reg = -1; |
4945 | if (ops[j].operand[0].type == OPT_REG) |
4946 | reg = ops[j].operand[0].reg; |
4947 | |
e56ab892 |
4948 | if (!need_op_saving) { |
89ff3147 |
4949 | ret = scan_for_mod(&ops[j], j + 1, i, 1); |
2b43685d |
4950 | need_to_save_current = (ret >= 0); |
e56ab892 |
4951 | } |
2b43685d |
4952 | if (need_op_saving || need_to_save_current) { |
8c83cc48 |
4953 | // mark this arg as one that needs operand saving |
4954 | pp->arg[arg].is_saved = 1; |
3a5101d7 |
4955 | |
8c83cc48 |
4956 | if (save_args_seen & (1 << (argnum - 1))) { |
3a5101d7 |
4957 | save_args_seen = 0; |
4958 | arg_grp_current++; |
4959 | if (arg_grp_current >= MAX_ARG_GRP) |
4960 | ferr(&ops[j], "out of arg groups (arg%d), f %s\n", |
8c83cc48 |
4961 | argnum, pp->name); |
3a5101d7 |
4962 | } |
e56ab892 |
4963 | } |
5f70a34f |
4964 | else if (ops[j].p_argnum == 0) |
e56ab892 |
4965 | ops[j].flags |= OPF_RMD; |
4966 | |
a652aa9f |
4967 | // some PUSHes are reused by different calls on other branches, |
de50b98b |
4968 | // but that can't happen if we didn't branch, so they |
4969 | // can be removed from future searches (handles nested calls) |
a652aa9f |
4970 | if (!may_reuse) |
9af2d373 |
4971 | ops[j].flags |= OPF_FARGNR; |
de50b98b |
4972 | |
9af2d373 |
4973 | ops[j].flags |= OPF_FARG; |
da87ae38 |
4974 | ops[j].flags &= ~OPF_RSAVE; |
4975 | |
23fd0b11 |
4976 | // check for __VALIST |
04abc5d6 |
4977 | if (!pp->is_unresolved && g_func_pp != NULL |
4978 | && pp->arg[arg].type.is_va_list) |
4979 | { |
23fd0b11 |
4980 | k = -1; |
92d715b6 |
4981 | ret = resolve_origin(j, &ops[j].operand[0], |
4982 | magic + 1, &k, NULL); |
5f70a34f |
4983 | if (ret == 1 && k >= 0) |
23fd0b11 |
4984 | { |
5f70a34f |
4985 | if (ops[k].op == OP_LEA) { |
acd03176 |
4986 | if (!g_func_pp->is_vararg) |
4987 | ferr(&ops[k], "lea <arg> used, but %s is not vararg?\n", |
4988 | g_func_pp->name); |
4989 | |
5f70a34f |
4990 | snprintf(buf, sizeof(buf), "arg_%X", |
4991 | g_func_pp->argc_stack * 4); |
acd03176 |
4992 | if (strstr(ops[k].operand[1].name, buf) |
4993 | || strstr(ops[k].operand[1].name, "arglist")) |
5f70a34f |
4994 | { |
b2bd20c0 |
4995 | ops[k].flags |= OPF_RMD | OPF_NOREGS | OPF_DONE; |
4996 | ops[j].flags |= OPF_RMD | OPF_NOREGS | OPF_VAPUSH; |
8c83cc48 |
4997 | pp->arg[arg].is_saved = 0; |
5f70a34f |
4998 | reg = -1; |
4999 | } |
5000 | else |
acd03176 |
5001 | ferr(&ops[k], "va_list arg detection failed\n"); |
5f70a34f |
5002 | } |
5003 | // check for va_list from g_func_pp arg too |
5004 | else if (ops[k].op == OP_MOV |
5005 | && is_stack_access(&ops[k], &ops[k].operand[1])) |
5006 | { |
5007 | ret = stack_frame_access(&ops[k], &ops[k].operand[1], |
5008 | buf, sizeof(buf), ops[k].operand[1].name, "", 1, 0); |
5009 | if (ret >= 0) { |
5e49b270 |
5010 | ops[k].flags |= OPF_RMD | OPF_DONE; |
5f70a34f |
5011 | ops[j].flags |= OPF_RMD; |
5012 | ops[j].p_argpass = ret + 1; |
8c83cc48 |
5013 | pp->arg[arg].is_saved = 0; |
5f70a34f |
5014 | reg = -1; |
5015 | } |
5016 | } |
23fd0b11 |
5017 | } |
5018 | } |
5019 | |
8c83cc48 |
5020 | if (pp->arg[arg].is_saved) { |
5021 | ops[j].flags &= ~OPF_RMD; |
5022 | ops[j].p_argnum = argnum; |
5023 | } |
23fd0b11 |
5024 | |
5025 | // tracking reg usage |
5f70a34f |
5026 | if (reg >= 0) |
5027 | *regmask |= 1 << reg; |
23fd0b11 |
5028 | |
89ff3147 |
5029 | arg++; |
8c83cc48 |
5030 | argnum++; |
89ff3147 |
5031 | if (!pp->is_unresolved) { |
5032 | // next arg |
8c83cc48 |
5033 | for (; arg < pp->argc; arg++, argnum++) |
89ff3147 |
5034 | if (pp->arg[arg].reg == NULL) |
5035 | break; |
5036 | } |
a3684be1 |
5037 | magic = (magic & 0xffffff) | (arg << 24); |
e56ab892 |
5038 | } |
3a5101d7 |
5039 | |
5040 | if (ops[j].p_arggrp > arg_grp_current) { |
5041 | save_args_seen = 0; |
5042 | arg_grp_current = ops[j].p_arggrp; |
5043 | } |
5044 | if (ops[j].p_argnum > 0) |
5045 | save_args_seen |= 1 << (ops[j].p_argnum - 1); |
e56ab892 |
5046 | } |
5047 | |
5048 | if (arg < pp->argc) { |
5049 | ferr(po, "arg collect failed for '%s': %d/%d\n", |
5050 | pp->name, arg, pp->argc); |
89ff3147 |
5051 | return -1; |
e56ab892 |
5052 | } |
89ff3147 |
5053 | |
3a5101d7 |
5054 | if (arg_grp_current > *arg_grp) |
5055 | *arg_grp = arg_grp_current; |
5056 | |
89ff3147 |
5057 | return arg; |
5058 | } |
5059 | |
5060 | static int collect_call_args(struct parsed_op *po, int i, |
8c83cc48 |
5061 | struct parsed_proto *pp, int *regmask, int magic) |
89ff3147 |
5062 | { |
3a5101d7 |
5063 | // arg group is for cases when pushes for |
5064 | // multiple funcs are going on |
5065 | struct parsed_op *po_tmp; |
3a5101d7 |
5066 | int arg_grp = 0; |
89ff3147 |
5067 | int ret; |
5068 | int a; |
5069 | |
8c83cc48 |
5070 | ret = collect_call_args_r(po, i, pp, regmask, &arg_grp, |
5071 | 0, 1, magic, 0, 0); |
89ff3147 |
5072 | if (ret < 0) |
5073 | return ret; |
5074 | |
3a5101d7 |
5075 | if (arg_grp != 0) { |
5076 | // propagate arg_grp |
5077 | for (a = 0; a < pp->argc; a++) { |
5078 | if (pp->arg[a].reg != NULL) |
5079 | continue; |
5080 | |
5081 | po_tmp = pp->arg[a].datap; |
5082 | while (po_tmp != NULL) { |
5083 | po_tmp->p_arggrp = arg_grp; |
8c83cc48 |
5084 | po_tmp = po_tmp->p_argnext >= 0 ? &ops[po_tmp->p_argnext] : NULL; |
3a5101d7 |
5085 | } |
5086 | } |
5087 | } |
3a5101d7 |
5088 | |
89ff3147 |
5089 | if (pp->is_unresolved) { |
5090 | pp->argc += ret; |
5091 | pp->argc_stack += ret; |
5092 | for (a = 0; a < pp->argc; a++) |
5093 | if (pp->arg[a].type.name == NULL) |
5094 | pp->arg[a].type.name = strdup("int"); |
5095 | } |
5096 | |
e56ab892 |
5097 | return ret; |
5098 | } |
5099 | |
b2bd20c0 |
5100 | static void reg_use_pass(int i, int opcnt, unsigned char *cbits, |
5101 | int regmask_now, int *regmask, |
5102 | int regmask_save_now, int *regmask_save, |
5103 | int *regmask_init, int regmask_arg) |
5104 | { |
5105 | struct parsed_op *po; |
5106 | int already_saved; |
5107 | int regmask_new; |
5108 | int regmask_op; |
5109 | int flags_set; |
5110 | int ret, reg; |
5111 | int j; |
5112 | |
5113 | for (; i < opcnt; i++) |
5114 | { |
5115 | po = &ops[i]; |
5116 | if (cbits[i >> 3] & (1 << (i & 7))) |
5117 | return; |
5118 | cbits[i >> 3] |= (1 << (i & 7)); |
5119 | |
5120 | if ((po->flags & OPF_JMP) && po->op != OP_CALL) { |
5121 | if (po->flags & (OPF_RMD|OPF_DONE)) |
5122 | continue; |
5123 | if (po->btj != NULL) { |
5124 | for (j = 0; j < po->btj->count; j++) { |
5125 | check_i(po, po->btj->d[j].bt_i); |
5126 | reg_use_pass(po->btj->d[j].bt_i, opcnt, cbits, |
5127 | regmask_now, regmask, regmask_save_now, regmask_save, |
5128 | regmask_init, regmask_arg); |
5129 | } |
5130 | return; |
5131 | } |
5132 | |
5133 | check_i(po, po->bt_i); |
5134 | if (po->flags & OPF_CJMP) |
5135 | reg_use_pass(po->bt_i, opcnt, cbits, |
5136 | regmask_now, regmask, regmask_save_now, regmask_save, |
5137 | regmask_init, regmask_arg); |
5138 | else |
5139 | i = po->bt_i - 1; |
5140 | continue; |
5141 | } |
5142 | |
5143 | if (po->op == OP_PUSH && !(po->flags & (OPF_FARG|OPF_DONE)) |
5144 | && !g_func_pp->is_userstack |
5145 | && po->operand[0].type == OPT_REG) |
5146 | { |
5147 | reg = po->operand[0].reg; |
5148 | ferr_assert(po, reg >= 0); |
5149 | |
5150 | already_saved = 0; |
5151 | flags_set = OPF_RSAVE | OPF_RMD | OPF_DONE; |
5152 | if (regmask_now & (1 << reg)) { |
5153 | already_saved = regmask_save_now & (1 << reg); |
5154 | flags_set = OPF_RSAVE | OPF_DONE; |
5155 | } |
5156 | |
93b5bd18 |
5157 | ret = scan_for_pop(i + 1, opcnt, i + opcnt * 3, reg, 0, 0, 0); |
b2bd20c0 |
5158 | if (ret == 1) { |
93b5bd18 |
5159 | scan_for_pop(i + 1, opcnt, i + opcnt * 4, |
5160 | reg, 0, 0, flags_set); |
b2bd20c0 |
5161 | } |
5162 | else { |
5163 | ret = scan_for_pop_ret(i + 1, opcnt, po->operand[0].reg, 0); |
5164 | if (ret == 1) { |
5165 | scan_for_pop_ret(i + 1, opcnt, po->operand[0].reg, |
5166 | flags_set); |
5167 | } |
5168 | } |
5169 | if (ret == 1) { |
5170 | ferr_assert(po, !already_saved); |
5171 | po->flags |= flags_set; |
5172 | |
5173 | if (regmask_now & (1 << reg)) { |
5174 | regmask_save_now |= (1 << reg); |
5175 | *regmask_save |= regmask_save_now; |
5176 | } |
5177 | continue; |
5178 | } |
5179 | } |
5180 | else if (po->op == OP_POP && (po->flags & OPF_RSAVE)) { |
5181 | reg = po->operand[0].reg; |
5182 | ferr_assert(po, reg >= 0); |
5183 | |
5184 | if (regmask_save_now & (1 << reg)) |
5185 | regmask_save_now &= ~(1 << reg); |
5186 | else |
5187 | regmask_now &= ~(1 << reg); |
5188 | continue; |
5189 | } |
5190 | else if (po->op == OP_CALL) { |
5191 | if ((po->regmask_dst & (1 << xAX)) |
5192 | && !(po->regmask_dst & (1 << xDX))) |
5193 | { |
5194 | if (po->flags & OPF_TAIL) |
5195 | // don't need eax, will do "return f();" or "f(); return;" |
5196 | po->regmask_dst &= ~(1 << xAX); |
5197 | else { |
5198 | struct parsed_opr opr = OPR_INIT(OPT_REG, OPLM_DWORD, xAX); |
5199 | j = -1; |
5200 | find_next_read(i + 1, opcnt, &opr, i + opcnt * 17, &j); |
5201 | if (j == -1) |
5202 | // not used |
5203 | po->regmask_dst &= ~(1 << xAX); |
5204 | } |
5205 | } |
fe18df39 |
5206 | |
5207 | // not "full stack" mode and have something in stack |
5208 | if (!(regmask_now & mxST7_2) && (regmask_now & mxST1_0)) |
5209 | ferr(po, "float stack is not empty on func call\n"); |
b2bd20c0 |
5210 | } |
5211 | |
5212 | if (po->flags & OPF_NOREGS) |
5213 | continue; |
5214 | |
acd03176 |
5215 | // if incomplete register is used, clear it on init to avoid |
5216 | // later use of uninitialized upper part in some situations |
5217 | if ((po->flags & OPF_DATA) && po->operand[0].type == OPT_REG |
5218 | && po->operand[0].lmod != OPLM_DWORD) |
5219 | { |
5220 | reg = po->operand[0].reg; |
5221 | ferr_assert(po, reg >= 0); |
5222 | |
5223 | if (!(regmask_now & (1 << reg))) |
5224 | *regmask_init |= 1 << reg; |
5225 | } |
5226 | |
b2bd20c0 |
5227 | regmask_op = po->regmask_src | po->regmask_dst; |
5228 | |
5229 | regmask_new = po->regmask_src & ~regmask_now & ~regmask_arg; |
5230 | regmask_new &= ~(1 << xSP); |
5231 | if (g_bp_frame && !(po->flags & OPF_EBP_S)) |
5232 | regmask_new &= ~(1 << xBP); |
5233 | |
b2bd20c0 |
5234 | if (regmask_new != 0) |
5235 | fnote(po, "uninitialized reg mask: %x\n", regmask_new); |
5236 | |
5237 | if (regmask_op & (1 << xBP)) { |
5238 | if (g_bp_frame && !(po->flags & OPF_EBP_S)) { |
5239 | if (po->regmask_dst & (1 << xBP)) |
5240 | // compiler decided to drop bp frame and use ebp as scratch |
5241 | scan_fwd_set_flags(i + 1, opcnt, i + opcnt * 5, OPF_EBP_S); |
5242 | else |
5243 | regmask_op &= ~(1 << xBP); |
5244 | } |
5245 | } |
5246 | |
622eb2ef |
5247 | if (po->flags & OPF_FPUSH) { |
5248 | if (regmask_now & mxST1) |
5249 | regmask_now |= mxSTa; // switch to "full stack" mode |
5250 | if (regmask_now & mxSTa) |
5251 | po->flags |= OPF_FSHIFT; |
5252 | if (!(regmask_now & mxST7_2)) { |
5253 | regmask_now = |
5254 | (regmask_now & ~mxST1_0) | ((regmask_now & mxST0) << 1); |
5255 | } |
5256 | } |
5257 | |
b2bd20c0 |
5258 | regmask_now |= regmask_op; |
5259 | *regmask |= regmask_now; |
5260 | |
d4a985bd |
5261 | // released regs |
5262 | if (po->flags & OPF_FPOP) { |
fe18df39 |
5263 | if ((regmask_now & mxSTa) == 0) |
d4a985bd |
5264 | ferr(po, "float pop on empty stack?\n"); |
fe18df39 |
5265 | if (regmask_now & (mxST7_2 | mxST1)) |
d4a985bd |
5266 | po->flags |= OPF_FSHIFT; |
fe18df39 |
5267 | if (!(regmask_now & mxST7_2)) { |
5268 | regmask_now = |
5269 | (regmask_now & ~mxST1_0) | ((regmask_now & mxST1) >> 1); |
5270 | } |
d4a985bd |
5271 | } |
5272 | |
5273 | if (po->flags & OPF_TAIL) { |
16057ce1 |
5274 | if (!(regmask_now & mxST7_2)) { |
5275 | if (get_pp_arg_regmask_dst(g_func_pp) & mxST0) { |
5276 | if (!(regmask_now & mxST0)) |
5277 | ferr(po, "no st0 on float return, mask: %x\n", |
5278 | regmask_now); |
5279 | } |
5280 | else if (regmask_now & mxST1_0) |
5281 | ferr(po, "float regs on tail: %x\n", regmask_now); |
5282 | } |
4d247254 |
5283 | |
5284 | // there is support for "conditional tailcall", sort of |
5285 | if (!(po->flags & OPF_CC)) |
5286 | return; |
d4a985bd |
5287 | } |
b2bd20c0 |
5288 | } |
5289 | } |
5290 | |
89ff3147 |
5291 | static void pp_insert_reg_arg(struct parsed_proto *pp, const char *reg) |
5292 | { |
5293 | int i; |
5294 | |
5295 | for (i = 0; i < pp->argc; i++) |
5296 | if (pp->arg[i].reg == NULL) |
5297 | break; |
5298 | |
5299 | if (pp->argc_stack) |
5300 | memmove(&pp->arg[i + 1], &pp->arg[i], |
5301 | sizeof(pp->arg[0]) * pp->argc_stack); |
5302 | memset(&pp->arg[i], 0, sizeof(pp->arg[i])); |
5303 | pp->arg[i].reg = strdup(reg); |
5304 | pp->arg[i].type.name = strdup("int"); |
5305 | pp->argc++; |
5306 | pp->argc_reg++; |
5307 | } |
5308 | |
04f8a628 |
5309 | static void output_std_flags(FILE *fout, struct parsed_op *po, |
5310 | int *pfomask, const char *dst_opr_text) |
5311 | { |
5312 | if (*pfomask & (1 << PFO_Z)) { |
5313 | fprintf(fout, "\n cond_z = (%s%s == 0);", |
5314 | lmod_cast_u(po, po->operand[0].lmod), dst_opr_text); |
5315 | *pfomask &= ~(1 << PFO_Z); |
5316 | } |
5317 | if (*pfomask & (1 << PFO_S)) { |
5318 | fprintf(fout, "\n cond_s = (%s%s < 0);", |
5319 | lmod_cast_s(po, po->operand[0].lmod), dst_opr_text); |
5320 | *pfomask &= ~(1 << PFO_S); |
5321 | } |
5322 | } |
5323 | |
c0de9015 |
5324 | enum { |
5325 | OPP_FORCE_NORETURN = (1 << 0), |
5326 | OPP_SIMPLE_ARGS = (1 << 1), |
5327 | OPP_ALIGN = (1 << 2), |
5328 | }; |
5329 | |
c0050df6 |
5330 | static void output_pp_attrs(FILE *fout, const struct parsed_proto *pp, |
c0de9015 |
5331 | int flags) |
c0050df6 |
5332 | { |
c0de9015 |
5333 | const char *cconv = ""; |
5334 | |
c0050df6 |
5335 | if (pp->is_fastcall) |
c0de9015 |
5336 | cconv = "__fastcall "; |
c0050df6 |
5337 | else if (pp->is_stdcall && pp->argc_reg == 0) |
c0de9015 |
5338 | cconv = "__stdcall "; |
5339 | |
5340 | fprintf(fout, (flags & OPP_ALIGN) ? "%-16s" : "%s", cconv); |
5341 | |
5342 | if (pp->is_noreturn || (flags & OPP_FORCE_NORETURN)) |
c0050df6 |
5343 | fprintf(fout, "noreturn "); |
5344 | } |
5345 | |
c0de9015 |
5346 | static void output_pp(FILE *fout, const struct parsed_proto *pp, |
5347 | int flags) |
5348 | { |
5349 | int i; |
5350 | |
5351 | fprintf(fout, (flags & OPP_ALIGN) ? "%-5s" : "%s ", |
5352 | pp->ret_type.name); |
5353 | if (pp->is_fptr) |
5354 | fprintf(fout, "("); |
5355 | output_pp_attrs(fout, pp, flags); |
5356 | if (pp->is_fptr) |
5357 | fprintf(fout, "*"); |
5358 | fprintf(fout, "%s", pp->name); |
5359 | if (pp->is_fptr) |
5360 | fprintf(fout, ")"); |
5361 | |
5362 | fprintf(fout, "("); |
5363 | for (i = 0; i < pp->argc; i++) { |
5364 | if (i > 0) |
5365 | fprintf(fout, ", "); |
93b5bd18 |
5366 | if (pp->arg[i].pp != NULL && pp->arg[i].pp->is_func |
5367 | && !(flags & OPP_SIMPLE_ARGS)) |
5368 | { |
c0de9015 |
5369 | // func pointer |
93b5bd18 |
5370 | output_pp(fout, pp->arg[i].pp, 0); |
c0de9015 |
5371 | } |
5372 | else if (pp->arg[i].type.is_retreg) { |
5373 | fprintf(fout, "u32 *r_%s", pp->arg[i].reg); |
5374 | } |
5375 | else { |
5376 | fprintf(fout, "%s", pp->arg[i].type.name); |
5377 | if (!pp->is_fptr) |
5378 | fprintf(fout, " a%d", i + 1); |
5379 | } |
5380 | } |
5381 | if (pp->is_vararg) { |
5382 | if (i > 0) |
5383 | fprintf(fout, ", "); |
5384 | fprintf(fout, "..."); |
5385 | } |
5386 | fprintf(fout, ")"); |
5387 | } |
5388 | |
3a5101d7 |
5389 | static char *saved_arg_name(char *buf, size_t buf_size, int grp, int num) |
5390 | { |
5391 | char buf1[16]; |
5392 | |
5393 | buf1[0] = 0; |
5394 | if (grp > 0) |
5395 | snprintf(buf1, sizeof(buf1), "%d", grp); |
5396 | snprintf(buf, buf_size, "s%s_a%d", buf1, num); |
5397 | |
5398 | return buf; |
5399 | } |
5400 | |
9af2d373 |
5401 | static void gen_x_cleanup(int opcnt); |
5402 | |
91977a1c |
5403 | static void gen_func(FILE *fout, FILE *fhdr, const char *funcn, int opcnt) |
5404 | { |
69a3cdfc |
5405 | struct parsed_op *po, *delayed_flag_op = NULL, *tmp_op; |
850c9265 |
5406 | struct parsed_opr *last_arith_dst = NULL; |
3ebea2cf |
5407 | char buf1[256], buf2[256], buf3[256], cast[64]; |
ddaf8bd7 |
5408 | struct parsed_proto *pp, *pp_tmp; |
4c45fa73 |
5409 | struct parsed_data *pd; |
3a5101d7 |
5410 | int save_arg_vars[MAX_ARG_GRP] = { 0, }; |
b2bd20c0 |
5411 | unsigned char cbits[MAX_OPS / 8]; |
497a6d6b |
5412 | const char *float_type; |
fe18df39 |
5413 | const char *float_st0; |
5414 | const char *float_st1; |
5415 | int need_float_stack = 0; |
16057ce1 |
5416 | int need_float_sw = 0; // status word |
108e9fe3 |
5417 | int need_tmp_var = 0; |
2fe80fdb |
5418 | int need_tmp64 = 0; |
fe18df39 |
5419 | int cond_vars = 0; |
91977a1c |
5420 | int had_decl = 0; |
3ebea2cf |
5421 | int label_pending = 0; |
497a6d6b |
5422 | int need_double = 0; |
16057ce1 |
5423 | int regmask_save = 0; // used regs saved/restored in this func |
b2bd20c0 |
5424 | int regmask_arg; // regs from this function args (fastcall, etc) |
5425 | int regmask_ret; // regs needed on ret |
25a330eb |
5426 | int regmask_now; // temp |
5427 | int regmask_init = 0; // regs that need zero initialization |
5428 | int regmask_pp = 0; // regs used in complex push-pop graph |
30620174 |
5429 | int regmask_ffca = 0; // float function call args |
25a330eb |
5430 | int regmask = 0; // used regs |
940e8e66 |
5431 | int pfomask = 0; |
64c59faf |
5432 | int found = 0; |
fe18df39 |
5433 | int dead_dst; |
91977a1c |
5434 | int no_output; |
4c45fa73 |
5435 | int i, j, l; |
91977a1c |
5436 | int arg; |
91977a1c |
5437 | int reg; |
5438 | int ret; |
5439 | |
1bafb621 |
5440 | g_bp_frame = g_sp_frame = g_stack_fsz = 0; |
a2c1d768 |
5441 | g_stack_frame_used = 0; |
226e8df1 |
5442 | if (g_sct_func_attr & SCTFA_CLEAR_REGS) |
5443 | regmask_init = g_regmask_init; |
91977a1c |
5444 | |
36595fd2 |
5445 | g_func_pp = proto_parse(fhdr, funcn, 0); |
bd96f656 |
5446 | if (g_func_pp == NULL) |
91977a1c |
5447 | ferr(ops, "proto_parse failed for '%s'\n", funcn); |
5448 | |
b2bd20c0 |
5449 | regmask_arg = get_pp_arg_regmask_src(g_func_pp); |
5450 | regmask_ret = get_pp_arg_regmask_dst(g_func_pp); |
5451 | |
91977a1c |
5452 | // pass1: |
87bf6cec |
5453 | // - resolve all branches |
66bdb2b0 |
5454 | // - parse calls with labels |
5455 | resolve_branches_parse_calls(opcnt); |
840257f6 |
5456 | |
66bdb2b0 |
5457 | // pass2: |
5458 | // - handle ebp/esp frame, remove ops related to it |
5459 | scan_prologue_epilogue(opcnt); |
87bf6cec |
5460 | |
5461 | // pass3: |
a2c1d768 |
5462 | // - remove dead labels |
b2bd20c0 |
5463 | // - set regs needed at ret |
1bafb621 |
5464 | for (i = 0; i < opcnt; i++) |
5465 | { |
d7857c3a |
5466 | if (g_labels[i] != NULL && g_label_refs[i].i == -1) { |
5467 | free(g_labels[i]); |
5468 | g_labels[i] = NULL; |
5469 | } |
b2bd20c0 |
5470 | |
5471 | if (ops[i].op == OP_RET) |
5472 | ops[i].regmask_src |= regmask_ret; |
66bdb2b0 |
5473 | } |
a2c1d768 |
5474 | |
66bdb2b0 |
5475 | // pass4: |
5476 | // - process trivial calls |
5477 | for (i = 0; i < opcnt; i++) |
5478 | { |
69a3cdfc |
5479 | po = &ops[i]; |
5e49b270 |
5480 | if (po->flags & (OPF_RMD|OPF_DONE)) |
91977a1c |
5481 | continue; |
850c9265 |
5482 | |
d4e3b5db |
5483 | if (po->op == OP_CALL) |
26677139 |
5484 | { |
5485 | pp = process_call_early(i, opcnt, &j); |
5486 | if (pp != NULL) { |
30620174 |
5487 | if (!(po->flags & OPF_ATAIL)) { |
26677139 |
5488 | // since we know the args, try to collect them |
30620174 |
5489 | ret = collect_call_args_early(i, pp, ®mask, ®mask_ffca); |
5490 | if (ret != 0) |
26677139 |
5491 | pp = NULL; |
30620174 |
5492 | } |
26677139 |
5493 | } |
5494 | |
5495 | if (pp != NULL) { |
5496 | if (j >= 0) { |
5497 | // commit esp adjust |
5e49b270 |
5498 | if (ops[j].op != OP_POP) |
5499 | patch_esp_adjust(&ops[j], pp->argc_stack * 4); |
bfacdc83 |
5500 | else { |
5501 | for (l = 0; l < pp->argc_stack; l++) |
b2bd20c0 |
5502 | ops[j + l].flags |= OPF_DONE | OPF_RMD | OPF_NOREGS; |
bfacdc83 |
5503 | } |
26677139 |
5504 | } |
5505 | |
5506 | if (strstr(pp->ret_type.name, "int64")) |
5507 | need_tmp64 = 1; |
5508 | |
5509 | po->flags |= OPF_DONE; |
5510 | } |
5511 | } |
5512 | } |
5513 | |
66bdb2b0 |
5514 | // pass5: |
b2bd20c0 |
5515 | // - process calls, stage 2 |
5516 | // - handle some push/pop pairs |
5517 | // - scan for STD/CLD, propagate DF |
16057ce1 |
5518 | // - try to resolve needed x87 status word bits |
26677139 |
5519 | for (i = 0; i < opcnt; i++) |
5520 | { |
16057ce1 |
5521 | int mask, z_check; |
5522 | |
26677139 |
5523 | po = &ops[i]; |
b2bd20c0 |
5524 | if (po->flags & OPF_RMD) |
26677139 |
5525 | continue; |
5526 | |
b2bd20c0 |
5527 | if (po->op == OP_CALL) |
69a3cdfc |
5528 | { |
b2bd20c0 |
5529 | if (!(po->flags & OPF_DONE)) { |
5530 | pp = process_call(i, opcnt); |
91977a1c |
5531 | |
b2bd20c0 |
5532 | if (!pp->is_unresolved && !(po->flags & OPF_ATAIL)) { |
5533 | // since we know the args, collect them |
8c83cc48 |
5534 | collect_call_args(po, i, pp, ®mask, i + opcnt * 2); |
b2bd20c0 |
5535 | } |
5536 | // for unresolved, collect after other passes |
89ff3147 |
5537 | } |
2b43685d |
5538 | |
b2bd20c0 |
5539 | pp = po->pp; |
5540 | ferr_assert(po, pp != NULL); |
5541 | |
5542 | po->regmask_src |= get_pp_arg_regmask_src(pp); |
5543 | po->regmask_dst |= get_pp_arg_regmask_dst(pp); |
5544 | |
d4a985bd |
5545 | if (po->regmask_dst & mxST0) |
5546 | po->flags |= OPF_FPUSH; |
5547 | |
2b43685d |
5548 | if (strstr(pp->ret_type.name, "int64")) |
2fe80fdb |
5549 | need_tmp64 = 1; |
b2bd20c0 |
5550 | |
5551 | continue; |
91977a1c |
5552 | } |
b2bd20c0 |
5553 | |
5554 | if (po->flags & OPF_DONE) |
5555 | continue; |
5556 | |
16057ce1 |
5557 | switch (po->op) { |
5558 | case OP_PUSH: |
5559 | if (!(po->flags & OPF_FARG) && !(po->flags & OPF_RSAVE) |
5560 | && po->operand[0].type == OPT_CONST) |
5561 | { |
5562 | scan_for_pop_const(i, opcnt, i + opcnt * 12); |
5563 | } |
5564 | break; |
5565 | |
5566 | case OP_POP: |
e83ea7ed |
5567 | scan_pushes_for_pop(i, opcnt, ®mask_pp); |
16057ce1 |
5568 | break; |
5569 | |
5570 | case OP_STD: |
b2bd20c0 |
5571 | po->flags |= OPF_DF | OPF_RMD | OPF_DONE; |
5572 | scan_propagate_df(i + 1, opcnt); |
16057ce1 |
5573 | break; |
5574 | |
5575 | case OP_FNSTSW: |
5576 | need_float_sw = 1; |
5577 | if (po->operand[0].type != OPT_REG || po->operand[0].reg != xAX) |
5578 | ferr(po, "TODO: fnstsw to mem\n"); |
5579 | ret = resolve_used_bits(i + 1, opcnt, xAX, &mask, &z_check); |
5580 | if (ret != 0) |
5581 | ferr(po, "fnstsw resolve failed\n"); |
5582 | ret = adjust_prev_op(i, OP_FCOM, i + opcnt * 21, |
5583 | (void *)(long)(mask | (z_check << 16))); |
5584 | if (ret != 1) |
5585 | ferr(po, "failed to find fcom: %d\n", ret); |
5586 | break; |
5587 | |
5588 | default: |
5589 | break; |
b2bd20c0 |
5590 | } |
d4e3b5db |
5591 | } |
5592 | |
66bdb2b0 |
5593 | // pass6: |
d4e3b5db |
5594 | // - find POPs for PUSHes, rm both |
5595 | // - scan for all used registers |
b2bd20c0 |
5596 | memset(cbits, 0, sizeof(cbits)); |
226e8df1 |
5597 | reg_use_pass(0, opcnt, cbits, regmask_init, ®mask, |
b2bd20c0 |
5598 | 0, ®mask_save, ®mask_init, regmask_arg); |
5599 | |
11437ea1 |
5600 | need_float_stack = !!(regmask & mxST7_2); |
5601 | |
b2bd20c0 |
5602 | // pass7: |
d4e3b5db |
5603 | // - find flag set ops for their users |
b2bd20c0 |
5604 | // - do unresolved calls |
1bafb621 |
5605 | // - declare indirect functions |
16057ce1 |
5606 | // - other op specific processing |
26677139 |
5607 | for (i = 0; i < opcnt; i++) |
5608 | { |
d4e3b5db |
5609 | po = &ops[i]; |
5e49b270 |
5610 | if (po->flags & (OPF_RMD|OPF_DONE)) |
d4e3b5db |
5611 | continue; |
5612 | |
d4e3b5db |
5613 | if (po->flags & OPF_CC) |
5614 | { |
2b43685d |
5615 | int setters[16], cnt = 0, branched = 0; |
5616 | |
7f20f633 |
5617 | ret = scan_for_flag_set(i, opcnt, i + opcnt * 6, |
04f8a628 |
5618 | &branched, setters, &cnt); |
2b43685d |
5619 | if (ret < 0 || cnt <= 0) |
5620 | ferr(po, "unable to trace flag setter(s)\n"); |
5621 | if (cnt > ARRAY_SIZE(setters)) |
5622 | ferr(po, "too many flag setters\n"); |
d4e3b5db |
5623 | |
2b43685d |
5624 | for (j = 0; j < cnt; j++) |
5625 | { |
5626 | tmp_op = &ops[setters[j]]; // flag setter |
5627 | pfomask = 0; |
5628 | |
5629 | // to get nicer code, we try to delay test and cmp; |
5630 | // if we can't because of operand modification, or if we |
591721d7 |
5631 | // have arith op, or branch, make it calculate flags explicitly |
5632 | if (tmp_op->op == OP_TEST || tmp_op->op == OP_CMP) |
5633 | { |
89ff3147 |
5634 | if (branched || scan_for_mod(tmp_op, setters[j] + 1, i, 0) >= 0) |
092f64e1 |
5635 | pfomask = 1 << po->pfo; |
2b43685d |
5636 | } |
4741fdfe |
5637 | else if (tmp_op->op == OP_CMPS || tmp_op->op == OP_SCAS) { |
092f64e1 |
5638 | pfomask = 1 << po->pfo; |
591721d7 |
5639 | } |
2b43685d |
5640 | else { |
04f8a628 |
5641 | // see if we'll be able to handle based on op result |
5642 | if ((tmp_op->op != OP_AND && tmp_op->op != OP_OR |
092f64e1 |
5643 | && po->pfo != PFO_Z && po->pfo != PFO_S |
5644 | && po->pfo != PFO_P) |
04f8a628 |
5645 | || branched |
2b43685d |
5646 | || scan_for_mod_opr0(tmp_op, setters[j] + 1, i) >= 0) |
092f64e1 |
5647 | { |
5648 | pfomask = 1 << po->pfo; |
5649 | } |
2fe80fdb |
5650 | |
c8dbc5be |
5651 | if (tmp_op->op == OP_ADD && po->pfo == PFO_C) { |
5652 | propagate_lmod(tmp_op, &tmp_op->operand[0], |
5653 | &tmp_op->operand[1]); |
5654 | if (tmp_op->operand[0].lmod == OPLM_DWORD) |
5655 | need_tmp64 = 1; |
5656 | } |
2b43685d |
5657 | } |
5658 | if (pfomask) { |
5659 | tmp_op->pfomask |= pfomask; |
cb090db0 |
5660 | cond_vars |= pfomask; |
2b43685d |
5661 | } |
04f8a628 |
5662 | // note: may overwrite, currently not a problem |
5663 | po->datap = tmp_op; |
d4e3b5db |
5664 | } |
5665 | |
cb090db0 |
5666 | if (po->op == OP_RCL || po->op == OP_RCR |
5667 | || po->op == OP_ADC || po->op == OP_SBB) |
5668 | cond_vars |= 1 << PFO_C; |
d4e3b5db |
5669 | } |
092f64e1 |
5670 | |
622eb2ef |
5671 | switch (po->op) { |
5672 | case OP_CMPS: |
5673 | case OP_SCAS: |
cb090db0 |
5674 | cond_vars |= 1 << PFO_Z; |
622eb2ef |
5675 | break; |
5676 | |
5677 | case OP_MUL: |
c8dbc5be |
5678 | if (po->operand[0].lmod == OPLM_DWORD) |
5679 | need_tmp64 = 1; |
622eb2ef |
5680 | break; |
5681 | |
5682 | case OP_IMUL: |
5683 | if (po->operand_cnt == 1 && po->operand[0].lmod == OPLM_DWORD) |
5684 | need_tmp64 = 1; |
5685 | break; |
5686 | |
5687 | case OP_CALL: |
26677139 |
5688 | // note: resolved non-reg calls are OPF_DONE already |
092f64e1 |
5689 | pp = po->pp; |
b2bd20c0 |
5690 | ferr_assert(po, pp != NULL); |
89ff3147 |
5691 | |
5692 | if (pp->is_unresolved) { |
ddaf8bd7 |
5693 | int regmask_stack = 0; |
8c83cc48 |
5694 | collect_call_args(po, i, pp, ®mask, i + opcnt * 2); |
89ff3147 |
5695 | |
b74c31e3 |
5696 | // this is pretty rough guess: |
5697 | // see ecx and edx were pushed (and not their saved versions) |
5698 | for (arg = 0; arg < pp->argc; arg++) { |
8c83cc48 |
5699 | if (pp->arg[arg].reg != NULL && !pp->arg[arg].is_saved) |
b74c31e3 |
5700 | continue; |
5701 | |
5702 | tmp_op = pp->arg[arg].datap; |
5703 | if (tmp_op == NULL) |
5704 | ferr(po, "parsed_op missing for arg%d\n", arg); |
8c83cc48 |
5705 | if (tmp_op->operand[0].type == OPT_REG) |
b74c31e3 |
5706 | regmask_stack |= 1 << tmp_op->operand[0].reg; |
5707 | } |
5708 | |
ddaf8bd7 |
5709 | if (!((regmask_stack & (1 << xCX)) |
5710 | && (regmask_stack & (1 << xDX)))) |
89ff3147 |
5711 | { |
5712 | if (pp->argc_stack != 0 |
c0050df6 |
5713 | || ((regmask | regmask_arg) & ((1 << xCX)|(1 << xDX)))) |
89ff3147 |
5714 | { |
5715 | pp_insert_reg_arg(pp, "ecx"); |
c0050df6 |
5716 | pp->is_fastcall = 1; |
ddaf8bd7 |
5717 | regmask_init |= 1 << xCX; |
89ff3147 |
5718 | regmask |= 1 << xCX; |
5719 | } |
5720 | if (pp->argc_stack != 0 |
5721 | || ((regmask | regmask_arg) & (1 << xDX))) |
5722 | { |
5723 | pp_insert_reg_arg(pp, "edx"); |
ddaf8bd7 |
5724 | regmask_init |= 1 << xDX; |
89ff3147 |
5725 | regmask |= 1 << xDX; |
5726 | } |
5727 | } |
c0050df6 |
5728 | |
5729 | // note: __cdecl doesn't fall into is_unresolved category |
5730 | if (pp->argc_stack > 0) |
5731 | pp->is_stdcall = 1; |
ddaf8bd7 |
5732 | } |
622eb2ef |
5733 | break; |
5734 | |
5735 | case OP_MOV: |
5736 | if (po->operand[0].pp != NULL && po->operand[1].pp != NULL) |
27ebfaed |
5737 | { |
622eb2ef |
5738 | // <var> = offset <something> |
5739 | if ((po->operand[1].pp->is_func || po->operand[1].pp->is_fptr) |
5740 | && !IS_START(po->operand[1].name, "off_")) |
5741 | { |
5742 | if (!po->operand[0].pp->is_fptr) |
5743 | ferr(po, "%s not declared as fptr when it should be\n", |
5744 | po->operand[0].name); |
5745 | if (pp_cmp_func(po->operand[0].pp, po->operand[1].pp)) { |
5746 | pp_print(buf1, sizeof(buf1), po->operand[0].pp); |
5747 | pp_print(buf2, sizeof(buf2), po->operand[1].pp); |
5748 | fnote(po, "var: %s\n", buf1); |
5749 | fnote(po, "func: %s\n", buf2); |
5750 | ferr(po, "^ mismatch\n"); |
5751 | } |
27ebfaed |
5752 | } |
5753 | } |
622eb2ef |
5754 | break; |
5755 | |
5756 | case OP_DIV: |
5757 | case OP_IDIV: |
acd03176 |
5758 | if (po->operand[0].lmod == OPLM_DWORD) { |
5759 | // 32bit division is common, look for it |
5760 | if (po->op == OP_DIV) |
5761 | ret = scan_for_reg_clear(i, xDX); |
5762 | else |
5763 | ret = scan_for_cdq_edx(i); |
5764 | if (ret >= 0) |
5765 | po->flags |= OPF_32BIT; |
5766 | else |
5767 | need_tmp64 = 1; |
5768 | } |
cb090db0 |
5769 | else |
acd03176 |
5770 | need_tmp_var = 1; |
622eb2ef |
5771 | break; |
5772 | |
5773 | case OP_CLD: |
5e49b270 |
5774 | po->flags |= OPF_RMD | OPF_DONE; |
622eb2ef |
5775 | break; |
5776 | |
5777 | case OP_RCL: |
5778 | case OP_RCR: |
5779 | case OP_XCHG: |
5780 | need_tmp_var = 1; |
5781 | break; |
5782 | |
5783 | case OP_FLD: |
5784 | if (po->operand[0].lmod == OPLM_QWORD) |
5785 | need_double = 1; |
5786 | break; |
5787 | |
5788 | case OPP_ALLSHL: |
5789 | case OPP_ALLSHR: |
5790 | need_tmp64 = 1; |
5791 | break; |
5792 | |
5793 | case OPP_FTOL: { |
d4a985bd |
5794 | struct parsed_opr opr = OPR_INIT(OPT_REG, OPLM_DWORD, xDX); |
5795 | j = -1; |
5796 | find_next_read(i + 1, opcnt, &opr, i + opcnt * 18, &j); |
5797 | if (j == -1) |
5798 | po->flags |= OPF_32BIT; |
622eb2ef |
5799 | break; |
d4a985bd |
5800 | } |
cb090db0 |
5801 | |
622eb2ef |
5802 | default: |
5803 | break; |
5804 | } |
8c83cc48 |
5805 | |
5806 | // this might need it's own pass... |
5807 | if (po->op != OP_FST && po->p_argnum > 0) |
5808 | save_arg_vars[po->p_arggrp] |= 1 << (po->p_argnum - 1); |
11437ea1 |
5809 | |
5810 | // correct for "full stack" mode late enable |
5811 | if ((po->flags & (OPF_PPUSH|OPF_FPOP)) && need_float_stack) |
5812 | po->flags |= OPF_FSHIFT; |
91977a1c |
5813 | } |
5814 | |
497a6d6b |
5815 | float_type = need_double ? "double" : "float"; |
fe18df39 |
5816 | float_st0 = need_float_stack ? "f_st[f_stp & 7]" : "f_st0"; |
5817 | float_st1 = need_float_stack ? "f_st[(f_stp + 1) & 7]" : "f_st1"; |
497a6d6b |
5818 | |
60fe410c |
5819 | // output starts here |
5820 | |
5821 | // define userstack size |
5822 | if (g_func_pp->is_userstack) { |
5823 | fprintf(fout, "#ifndef US_SZ_%s\n", g_func_pp->name); |
5824 | fprintf(fout, "#define US_SZ_%s USERSTACK_SIZE\n", g_func_pp->name); |
5825 | fprintf(fout, "#endif\n"); |
5826 | } |
5827 | |
5828 | // the function itself |
c0de9015 |
5829 | ferr_assert(ops, !g_func_pp->is_fptr); |
5830 | output_pp(fout, g_func_pp, |
5831 | (g_ida_func_attr & IDAFA_NORETURN) ? OPP_FORCE_NORETURN : 0); |
5832 | fprintf(fout, "\n{\n"); |
60fe410c |
5833 | |
5834 | // declare indirect functions |
5835 | for (i = 0; i < opcnt; i++) { |
5836 | po = &ops[i]; |
5837 | if (po->flags & OPF_RMD) |
5838 | continue; |
5839 | |
5840 | if (po->op == OP_CALL) { |
5841 | pp = po->pp; |
5842 | if (pp == NULL) |
5843 | ferr(po, "NULL pp\n"); |
5844 | |
5845 | if (pp->is_fptr && !(pp->name[0] != 0 && pp->is_arg)) { |
5846 | if (pp->name[0] != 0) { |
5847 | memmove(pp->name + 2, pp->name, strlen(pp->name) + 1); |
5848 | memcpy(pp->name, "i_", 2); |
5849 | |
5850 | // might be declared already |
5851 | found = 0; |
5852 | for (j = 0; j < i; j++) { |
5853 | if (ops[j].op == OP_CALL && (pp_tmp = ops[j].pp)) { |
5854 | if (pp_tmp->is_fptr && IS(pp->name, pp_tmp->name)) { |
5855 | found = 1; |
5856 | break; |
5857 | } |
5858 | } |
5859 | } |
5860 | if (found) |
5861 | continue; |
5862 | } |
5863 | else |
5864 | snprintf(pp->name, sizeof(pp->name), "icall%d", i); |
5865 | |
c0de9015 |
5866 | fprintf(fout, " "); |
5867 | output_pp(fout, pp, OPP_SIMPLE_ARGS); |
5868 | fprintf(fout, ";\n"); |
60fe410c |
5869 | } |
5870 | } |
5871 | } |
da87ae38 |
5872 | |
4c45fa73 |
5873 | // output LUTs/jumptables |
5874 | for (i = 0; i < g_func_pd_cnt; i++) { |
5875 | pd = &g_func_pd[i]; |
5876 | fprintf(fout, " static const "); |
5877 | if (pd->type == OPT_OFFSET) { |
5878 | fprintf(fout, "void *jt_%s[] =\n { ", pd->label); |
5879 | |
5880 | for (j = 0; j < pd->count; j++) { |
5881 | if (j > 0) |
5882 | fprintf(fout, ", "); |
5883 | fprintf(fout, "&&%s", pd->d[j].u.label); |
5884 | } |
5885 | } |
5886 | else { |
5887 | fprintf(fout, "%s %s[] =\n { ", |
5888 | lmod_type_u(ops, pd->lmod), pd->label); |
5889 | |
5890 | for (j = 0; j < pd->count; j++) { |
5891 | if (j > 0) |
5892 | fprintf(fout, ", "); |
5893 | fprintf(fout, "%u", pd->d[j].u.val); |
5894 | } |
5895 | } |
5896 | fprintf(fout, " };\n"); |
1f84f6b3 |
5897 | had_decl = 1; |
4c45fa73 |
5898 | } |
5899 | |
4f12f671 |
5900 | // declare stack frame, va_arg |
1f84f6b3 |
5901 | if (g_stack_fsz) { |
d4a985bd |
5902 | fprintf(fout, " union { u32 d[%d];", (g_stack_fsz + 3) / 4); |
5903 | if (g_func_lmods & (1 << OPLM_WORD)) |
5904 | fprintf(fout, " u16 w[%d];", (g_stack_fsz + 1) / 2); |
5905 | if (g_func_lmods & (1 << OPLM_BYTE)) |
5906 | fprintf(fout, " u8 b[%d];", g_stack_fsz); |
5907 | if (g_func_lmods & (1 << OPLM_QWORD)) |
5908 | fprintf(fout, " double q[%d];", (g_stack_fsz + 7) / 8); |
5909 | fprintf(fout, " } sf;\n"); |
1f84f6b3 |
5910 | had_decl = 1; |
5911 | } |
5912 | |
5913 | if (g_func_pp->is_userstack) { |
60fe410c |
5914 | fprintf(fout, " u32 fake_sf[US_SZ_%s / 4];\n", g_func_pp->name); |
5915 | fprintf(fout, " u32 *esp = &fake_sf[sizeof(fake_sf) / 4];\n"); |
1f84f6b3 |
5916 | had_decl = 1; |
5917 | } |
850c9265 |
5918 | |
1f84f6b3 |
5919 | if (g_func_pp->is_vararg) { |
4f12f671 |
5920 | fprintf(fout, " va_list ap;\n"); |
1f84f6b3 |
5921 | had_decl = 1; |
5922 | } |
4f12f671 |
5923 | |
940e8e66 |
5924 | // declare arg-registers |
bd96f656 |
5925 | for (i = 0; i < g_func_pp->argc; i++) { |
5926 | if (g_func_pp->arg[i].reg != NULL) { |
91977a1c |
5927 | reg = char_array_i(regs_r32, |
bd96f656 |
5928 | ARRAY_SIZE(regs_r32), g_func_pp->arg[i].reg); |
75ad0378 |
5929 | if (regmask & (1 << reg)) { |
1f84f6b3 |
5930 | if (g_func_pp->arg[i].type.is_retreg) |
5931 | fprintf(fout, " u32 %s = *r_%s;\n", |
5932 | g_func_pp->arg[i].reg, g_func_pp->arg[i].reg); |
5933 | else |
5934 | fprintf(fout, " u32 %s = (u32)a%d;\n", |
5935 | g_func_pp->arg[i].reg, i + 1); |
75ad0378 |
5936 | } |
1f84f6b3 |
5937 | else { |
5938 | if (g_func_pp->arg[i].type.is_retreg) |
5939 | ferr(ops, "retreg '%s' is unused?\n", |
5940 | g_func_pp->arg[i].reg); |
75ad0378 |
5941 | fprintf(fout, " // %s = a%d; // unused\n", |
5942 | g_func_pp->arg[i].reg, i + 1); |
1f84f6b3 |
5943 | } |
91977a1c |
5944 | had_decl = 1; |
5945 | } |
5946 | } |
5947 | |
25a330eb |
5948 | // declare normal registers |
75ad0378 |
5949 | regmask_now = regmask & ~regmask_arg; |
5950 | regmask_now &= ~(1 << xSP); |
90307a99 |
5951 | if (regmask_now & 0x00ff) { |
91977a1c |
5952 | for (reg = 0; reg < 8; reg++) { |
75ad0378 |
5953 | if (regmask_now & (1 << reg)) { |
ddaf8bd7 |
5954 | fprintf(fout, " u32 %s", regs_r32[reg]); |
5955 | if (regmask_init & (1 << reg)) |
5956 | fprintf(fout, " = 0"); |
5957 | fprintf(fout, ";\n"); |
91977a1c |
5958 | had_decl = 1; |
5959 | } |
5960 | } |
5961 | } |
d4a985bd |
5962 | // ... mmx |
90307a99 |
5963 | if (regmask_now & 0xff00) { |
5964 | for (reg = 8; reg < 16; reg++) { |
5965 | if (regmask_now & (1 << reg)) { |
5966 | fprintf(fout, " mmxr %s", regs_r32[reg]); |
5967 | if (regmask_init & (1 << reg)) |
5968 | fprintf(fout, " = { 0, }"); |
5969 | fprintf(fout, ";\n"); |
5970 | had_decl = 1; |
5971 | } |
5972 | } |
5973 | } |
d4a985bd |
5974 | // ... x87 |
fe18df39 |
5975 | if (need_float_stack) { |
5976 | fprintf(fout, " %s f_st[8];\n", float_type); |
5977 | fprintf(fout, " int f_stp = 0;\n"); |
5978 | had_decl = 1; |
5979 | } |
5980 | else { |
5981 | if (regmask_now & 0xff0000) { |
5982 | for (reg = 16; reg < 24; reg++) { |
5983 | if (regmask_now & (1 << reg)) { |
5984 | fprintf(fout, " %s f_st%d", float_type, reg - 16); |
5985 | if (regmask_init & (1 << reg)) |
5986 | fprintf(fout, " = 0"); |
5987 | fprintf(fout, ";\n"); |
5988 | had_decl = 1; |
5989 | } |
d4a985bd |
5990 | } |
5991 | } |
5992 | } |
91977a1c |
5993 | |
16057ce1 |
5994 | if (need_float_sw) { |
5995 | fprintf(fout, " u16 f_sw;\n"); |
5996 | had_decl = 1; |
5997 | } |
5998 | |
d4e3b5db |
5999 | if (regmask_save) { |
6000 | for (reg = 0; reg < 8; reg++) { |
6001 | if (regmask_save & (1 << reg)) { |
6002 | fprintf(fout, " u32 s_%s;\n", regs_r32[reg]); |
6003 | had_decl = 1; |
6004 | } |
6005 | } |
6006 | } |
6007 | |
3a5101d7 |
6008 | for (i = 0; i < ARRAY_SIZE(save_arg_vars); i++) { |
6009 | if (save_arg_vars[i] == 0) |
6010 | continue; |
69a3cdfc |
6011 | for (reg = 0; reg < 32; reg++) { |
3a5101d7 |
6012 | if (save_arg_vars[i] & (1 << reg)) { |
6013 | fprintf(fout, " u32 %s;\n", |
6014 | saved_arg_name(buf1, sizeof(buf1), i, reg + 1)); |
69a3cdfc |
6015 | had_decl = 1; |
6016 | } |
6017 | } |
6018 | } |
6019 | |
30620174 |
6020 | if (regmask_ffca) { |
6021 | for (reg = 0; reg < 32; reg++) { |
6022 | if (regmask_ffca & (1 << reg)) { |
6023 | fprintf(fout, " %s fs_%d;\n", float_type, reg + 1); |
6024 | had_decl = 1; |
6025 | } |
6026 | } |
6027 | } |
6028 | |
25a330eb |
6029 | // declare push-pop temporaries |
6030 | if (regmask_pp) { |
6031 | for (reg = 0; reg < 8; reg++) { |
6032 | if (regmask_pp & (1 << reg)) { |
6033 | fprintf(fout, " u32 pp_%s;\n", regs_r32[reg]); |
6034 | had_decl = 1; |
6035 | } |
6036 | } |
6037 | } |
6038 | |
cb090db0 |
6039 | if (cond_vars) { |
69a3cdfc |
6040 | for (i = 0; i < 8; i++) { |
cb090db0 |
6041 | if (cond_vars & (1 << i)) { |
69a3cdfc |
6042 | fprintf(fout, " u32 cond_%s;\n", parsed_flag_op_names[i]); |
6043 | had_decl = 1; |
6044 | } |
6045 | } |
6046 | } |
6047 | |
108e9fe3 |
6048 | if (need_tmp_var) { |
6049 | fprintf(fout, " u32 tmp;\n"); |
6050 | had_decl = 1; |
6051 | } |
6052 | |
2fe80fdb |
6053 | if (need_tmp64) { |
6054 | fprintf(fout, " u64 tmp64;\n"); |
87bf6cec |
6055 | had_decl = 1; |
6056 | } |
6057 | |
91977a1c |
6058 | if (had_decl) |
6059 | fprintf(fout, "\n"); |
6060 | |
7e08c224 |
6061 | // do stack clear, if needed |
6062 | if (g_sct_func_attr & SCTFA_CLEAR_SF) { |
6063 | fprintf(fout, " "); |
6064 | if (g_stack_clear_len != 0) { |
6065 | if (g_stack_clear_len <= 4) { |
6066 | for (i = 0; i < g_stack_clear_len; i++) |
6067 | fprintf(fout, "sf.d[%d] = ", g_stack_clear_start + i); |
6068 | fprintf(fout, "0;\n"); |
6069 | } |
6070 | else { |
6071 | fprintf(fout, "memset(&sf[%d], 0, %d);\n", |
6072 | g_stack_clear_start, g_stack_clear_len * 4); |
6073 | } |
6074 | } |
6075 | else |
6076 | fprintf(fout, "memset(&sf, 0, sizeof(sf));\n"); |
6077 | } |
6078 | |
bd96f656 |
6079 | if (g_func_pp->is_vararg) { |
6080 | if (g_func_pp->argc_stack == 0) |
4f12f671 |
6081 | ferr(ops, "vararg func without stack args?\n"); |
bd96f656 |
6082 | fprintf(fout, " va_start(ap, a%d);\n", g_func_pp->argc); |
4f12f671 |
6083 | } |
6084 | |
91977a1c |
6085 | // output ops |
69a3cdfc |
6086 | for (i = 0; i < opcnt; i++) |
6087 | { |
d7857c3a |
6088 | if (g_labels[i] != NULL) { |
91977a1c |
6089 | fprintf(fout, "\n%s:\n", g_labels[i]); |
3ebea2cf |
6090 | label_pending = 1; |
2b43685d |
6091 | |
6092 | delayed_flag_op = NULL; |
6093 | last_arith_dst = NULL; |
3ebea2cf |
6094 | } |
91977a1c |
6095 | |
69a3cdfc |
6096 | po = &ops[i]; |
6097 | if (po->flags & OPF_RMD) |
91977a1c |
6098 | continue; |
6099 | |
6100 | no_output = 0; |
6101 | |
91977a1c |
6102 | #define assert_operand_cnt(n_) \ |
850c9265 |
6103 | if (po->operand_cnt != n_) \ |
6104 | ferr(po, "operand_cnt is %d/%d\n", po->operand_cnt, n_) |
6105 | |
69a3cdfc |
6106 | // conditional/flag using op? |
6107 | if (po->flags & OPF_CC) |
850c9265 |
6108 | { |
940e8e66 |
6109 | int is_delayed = 0; |
69a3cdfc |
6110 | |
04f8a628 |
6111 | tmp_op = po->datap; |
850c9265 |
6112 | |
69a3cdfc |
6113 | // we go through all this trouble to avoid using parsed_flag_op, |
6114 | // which makes generated code much nicer |
6115 | if (delayed_flag_op != NULL) |
850c9265 |
6116 | { |
092f64e1 |
6117 | out_cmp_test(buf1, sizeof(buf1), delayed_flag_op, |
6118 | po->pfo, po->pfo_inv); |
940e8e66 |
6119 | is_delayed = 1; |
91977a1c |
6120 | } |
850c9265 |
6121 | else if (last_arith_dst != NULL |
092f64e1 |
6122 | && (po->pfo == PFO_Z || po->pfo == PFO_S || po->pfo == PFO_P |
04f8a628 |
6123 | || (tmp_op && (tmp_op->op == OP_AND || tmp_op->op == OP_OR)) |
6124 | )) |
850c9265 |
6125 | { |
3ebea2cf |
6126 | out_src_opr_u32(buf3, sizeof(buf3), po, last_arith_dst); |
092f64e1 |
6127 | out_test_for_cc(buf1, sizeof(buf1), po, po->pfo, po->pfo_inv, |
850c9265 |
6128 | last_arith_dst->lmod, buf3); |
940e8e66 |
6129 | is_delayed = 1; |
850c9265 |
6130 | } |
04f8a628 |
6131 | else if (tmp_op != NULL) { |
7ba45c34 |
6132 | // use preprocessed flag calc results |
092f64e1 |
6133 | if (!(tmp_op->pfomask & (1 << po->pfo))) |
6134 | ferr(po, "not prepared for pfo %d\n", po->pfo); |
69a3cdfc |
6135 | |
092f64e1 |
6136 | // note: pfo_inv was not yet applied |
69a3cdfc |
6137 | snprintf(buf1, sizeof(buf1), "(%scond_%s)", |
092f64e1 |
6138 | po->pfo_inv ? "!" : "", parsed_flag_op_names[po->pfo]); |
69a3cdfc |
6139 | } |
6140 | else { |
6141 | ferr(po, "all methods of finding comparison failed\n"); |
6142 | } |
850c9265 |
6143 | |
69a3cdfc |
6144 | if (po->flags & OPF_JMP) { |
092f64e1 |
6145 | fprintf(fout, " if %s", buf1); |
850c9265 |
6146 | } |
cb090db0 |
6147 | else if (po->op == OP_RCL || po->op == OP_RCR |
6148 | || po->op == OP_ADC || po->op == OP_SBB) |
6149 | { |
940e8e66 |
6150 | if (is_delayed) |
6151 | fprintf(fout, " cond_%s = %s;\n", |
092f64e1 |
6152 | parsed_flag_op_names[po->pfo], buf1); |
850c9265 |
6153 | } |
5101a5f9 |
6154 | else if (po->flags & OPF_DATA) { // SETcc |
850c9265 |
6155 | out_dst_opr(buf2, sizeof(buf2), po, &po->operand[0]); |
6156 | fprintf(fout, " %s = %s;", buf2, buf1); |
91977a1c |
6157 | } |
69a3cdfc |
6158 | else { |
6159 | ferr(po, "unhandled conditional op\n"); |
6160 | } |
91977a1c |
6161 | } |
6162 | |
940e8e66 |
6163 | pfomask = po->pfomask; |
6164 | |
850c9265 |
6165 | switch (po->op) |
91977a1c |
6166 | { |
6167 | case OP_MOV: |
6168 | assert_operand_cnt(2); |
850c9265 |
6169 | propagate_lmod(po, &po->operand[0], &po->operand[1]); |
de50b98b |
6170 | out_dst_opr(buf1, sizeof(buf1), po, &po->operand[0]); |
c7ed83dd |
6171 | default_cast_to(buf3, sizeof(buf3), &po->operand[0]); |
de50b98b |
6172 | fprintf(fout, " %s = %s;", buf1, |
3ebea2cf |
6173 | out_src_opr(buf2, sizeof(buf2), po, &po->operand[1], |
c7ed83dd |
6174 | buf3, 0)); |
850c9265 |
6175 | break; |
6176 | |
6177 | case OP_LEA: |
6178 | assert_operand_cnt(2); |
87bf6cec |
6179 | po->operand[1].lmod = OPLM_DWORD; // always |
850c9265 |
6180 | fprintf(fout, " %s = %s;", |
6181 | out_dst_opr(buf1, sizeof(buf1), po, &po->operand[0]), |
3ebea2cf |
6182 | out_src_opr(buf2, sizeof(buf2), po, &po->operand[1], |
6183 | NULL, 1)); |
850c9265 |
6184 | break; |
6185 | |
6186 | case OP_MOVZX: |
6187 | assert_operand_cnt(2); |
91977a1c |
6188 | fprintf(fout, " %s = %s;", |
850c9265 |
6189 | out_dst_opr(buf1, sizeof(buf1), po, &po->operand[0]), |
3ebea2cf |
6190 | out_src_opr_u32(buf2, sizeof(buf2), po, &po->operand[1])); |
850c9265 |
6191 | break; |
6192 | |
6193 | case OP_MOVSX: |
6194 | assert_operand_cnt(2); |
6195 | switch (po->operand[1].lmod) { |
6196 | case OPLM_BYTE: |
6197 | strcpy(buf3, "(s8)"); |
6198 | break; |
6199 | case OPLM_WORD: |
6200 | strcpy(buf3, "(s16)"); |
6201 | break; |
6202 | default: |
6203 | ferr(po, "invalid src lmod: %d\n", po->operand[1].lmod); |
6204 | } |
a2c1d768 |
6205 | fprintf(fout, " %s = %s;", |
850c9265 |
6206 | out_dst_opr(buf1, sizeof(buf1), po, &po->operand[0]), |
a2c1d768 |
6207 | out_src_opr(buf2, sizeof(buf2), po, &po->operand[1], |
6208 | buf3, 0)); |
850c9265 |
6209 | break; |
6210 | |
108e9fe3 |
6211 | case OP_XCHG: |
6212 | assert_operand_cnt(2); |
6213 | propagate_lmod(po, &po->operand[0], &po->operand[1]); |
6214 | fprintf(fout, " tmp = %s;", |
6215 | out_src_opr(buf1, sizeof(buf1), po, &po->operand[0], "", 0)); |
6216 | fprintf(fout, " %s = %s;", |
6217 | out_dst_opr(buf1, sizeof(buf1), po, &po->operand[0]), |
c7ed83dd |
6218 | out_src_opr(buf2, sizeof(buf2), po, &po->operand[1], |
6219 | default_cast_to(buf3, sizeof(buf3), &po->operand[0]), 0)); |
6220 | fprintf(fout, " %s = %stmp;", |
6221 | out_dst_opr(buf1, sizeof(buf1), po, &po->operand[1]), |
6222 | default_cast_to(buf3, sizeof(buf3), &po->operand[1])); |
108e9fe3 |
6223 | snprintf(g_comment, sizeof(g_comment), "xchg"); |
6224 | break; |
6225 | |
850c9265 |
6226 | case OP_NOT: |
6227 | assert_operand_cnt(1); |
6228 | out_dst_opr(buf1, sizeof(buf1), po, &po->operand[0]); |
6229 | fprintf(fout, " %s = ~%s;", buf1, buf1); |
6230 | break; |
6231 | |
04abc5d6 |
6232 | case OP_XLAT: |
6233 | assert_operand_cnt(2); |
6234 | out_dst_opr(buf1, sizeof(buf1), po, &po->operand[0]); |
6235 | out_src_opr_u32(buf2, sizeof(buf2), po, &po->operand[1]); |
6236 | fprintf(fout, " %s = *(u8 *)(%s + %s);", buf1, buf2, buf1); |
6237 | strcpy(g_comment, "xlat"); |
6238 | break; |
6239 | |
5101a5f9 |
6240 | case OP_CDQ: |
6241 | assert_operand_cnt(2); |
6242 | fprintf(fout, " %s = (s32)%s >> 31;", |
6243 | out_dst_opr(buf1, sizeof(buf1), po, &po->operand[0]), |
3ebea2cf |
6244 | out_src_opr_u32(buf2, sizeof(buf2), po, &po->operand[1])); |
5101a5f9 |
6245 | strcpy(g_comment, "cdq"); |
6246 | break; |
6247 | |
622eb2ef |
6248 | case OP_BSWAP: |
6249 | assert_operand_cnt(1); |
6250 | out_dst_opr(buf1, sizeof(buf1), po, &po->operand[0]); |
6251 | fprintf(fout, " %s = __builtin_bswap32(%s);", buf1, buf1); |
6252 | break; |
6253 | |
092f64e1 |
6254 | case OP_LODS: |
092f64e1 |
6255 | if (po->flags & OPF_REP) { |
acd03176 |
6256 | assert_operand_cnt(3); |
092f64e1 |
6257 | // hmh.. |
6258 | ferr(po, "TODO\n"); |
6259 | } |
6260 | else { |
acd03176 |
6261 | assert_operand_cnt(2); |
3947cf24 |
6262 | fprintf(fout, " %s = %sesi; esi %c= %d;", |
6263 | out_dst_opr(buf1, sizeof(buf1), po, &po->operand[1]), |
6264 | lmod_cast_u_ptr(po, po->operand[1].lmod), |
092f64e1 |
6265 | (po->flags & OPF_DF) ? '-' : '+', |
3947cf24 |
6266 | lmod_bytes(po, po->operand[1].lmod)); |
092f64e1 |
6267 | strcpy(g_comment, "lods"); |
6268 | } |
6269 | break; |
6270 | |
33c35af6 |
6271 | case OP_STOS: |
33c35af6 |
6272 | if (po->flags & OPF_REP) { |
acd03176 |
6273 | assert_operand_cnt(3); |
591721d7 |
6274 | fprintf(fout, " for (; ecx != 0; ecx--, edi %c= %d)\n", |
6275 | (po->flags & OPF_DF) ? '-' : '+', |
3947cf24 |
6276 | lmod_bytes(po, po->operand[1].lmod)); |
d4e3b5db |
6277 | fprintf(fout, " %sedi = eax;", |
3947cf24 |
6278 | lmod_cast_u_ptr(po, po->operand[1].lmod)); |
33c35af6 |
6279 | strcpy(g_comment, "rep stos"); |
6280 | } |
6281 | else { |
acd03176 |
6282 | assert_operand_cnt(2); |
092f64e1 |
6283 | fprintf(fout, " %sedi = eax; edi %c= %d;", |
3947cf24 |
6284 | lmod_cast_u_ptr(po, po->operand[1].lmod), |
591721d7 |
6285 | (po->flags & OPF_DF) ? '-' : '+', |
3947cf24 |
6286 | lmod_bytes(po, po->operand[1].lmod)); |
33c35af6 |
6287 | strcpy(g_comment, "stos"); |
6288 | } |
6289 | break; |
6290 | |
d4e3b5db |
6291 | case OP_MOVS: |
d4e3b5db |
6292 | j = lmod_bytes(po, po->operand[0].lmod); |
6293 | strcpy(buf1, lmod_cast_u_ptr(po, po->operand[0].lmod)); |
591721d7 |
6294 | l = (po->flags & OPF_DF) ? '-' : '+'; |
d4e3b5db |
6295 | if (po->flags & OPF_REP) { |
acd03176 |
6296 | assert_operand_cnt(3); |
d4e3b5db |
6297 | fprintf(fout, |
591721d7 |
6298 | " for (; ecx != 0; ecx--, edi %c= %d, esi %c= %d)\n", |
6299 | l, j, l, j); |
d4e3b5db |
6300 | fprintf(fout, |
6301 | " %sedi = %sesi;", buf1, buf1); |
6302 | strcpy(g_comment, "rep movs"); |
6303 | } |
6304 | else { |
acd03176 |
6305 | assert_operand_cnt(2); |
092f64e1 |
6306 | fprintf(fout, " %sedi = %sesi; edi %c= %d; esi %c= %d;", |
591721d7 |
6307 | buf1, buf1, l, j, l, j); |
d4e3b5db |
6308 | strcpy(g_comment, "movs"); |
6309 | } |
6310 | break; |
6311 | |
7ba45c34 |
6312 | case OP_CMPS: |
7ba45c34 |
6313 | // repe ~ repeat while ZF=1 |
7ba45c34 |
6314 | j = lmod_bytes(po, po->operand[0].lmod); |
6315 | strcpy(buf1, lmod_cast_u_ptr(po, po->operand[0].lmod)); |
591721d7 |
6316 | l = (po->flags & OPF_DF) ? '-' : '+'; |
7ba45c34 |
6317 | if (po->flags & OPF_REP) { |
acd03176 |
6318 | assert_operand_cnt(3); |
7ba45c34 |
6319 | fprintf(fout, |
7f20f633 |
6320 | " while (ecx != 0) {\n"); |
4741fdfe |
6321 | if (pfomask & (1 << PFO_C)) { |
6322 | // ugh.. |
6323 | fprintf(fout, |
05381e4a |
6324 | " cond_c = %sesi < %sedi;\n", buf1, buf1); |
4741fdfe |
6325 | pfomask &= ~(1 << PFO_C); |
6326 | } |
7ba45c34 |
6327 | fprintf(fout, |
05381e4a |
6328 | " cond_z = (%sesi == %sedi); esi %c= %d, edi %c= %d;\n", |
1f84f6b3 |
6329 | buf1, buf1, l, j, l, j); |
6330 | fprintf(fout, |
7f20f633 |
6331 | " ecx--;\n" |
1f84f6b3 |
6332 | " if (cond_z %s 0) break;\n", |
6333 | (po->flags & OPF_REPZ) ? "==" : "!="); |
7ba45c34 |
6334 | fprintf(fout, |
4741fdfe |
6335 | " }"); |
7ba45c34 |
6336 | snprintf(g_comment, sizeof(g_comment), "rep%s cmps", |
6337 | (po->flags & OPF_REPZ) ? "e" : "ne"); |
6338 | } |
6339 | else { |
acd03176 |
6340 | assert_operand_cnt(2); |
7ba45c34 |
6341 | fprintf(fout, |
05381e4a |
6342 | " cond_z = (%sesi == %sedi); esi %c= %d; edi %c= %d;", |
591721d7 |
6343 | buf1, buf1, l, j, l, j); |
7ba45c34 |
6344 | strcpy(g_comment, "cmps"); |
6345 | } |
6346 | pfomask &= ~(1 << PFO_Z); |
6347 | last_arith_dst = NULL; |
6348 | delayed_flag_op = NULL; |
6349 | break; |
6350 | |
591721d7 |
6351 | case OP_SCAS: |
6352 | // only does ZF (for now) |
6353 | // repe ~ repeat while ZF=1 |
3947cf24 |
6354 | j = lmod_bytes(po, po->operand[1].lmod); |
591721d7 |
6355 | l = (po->flags & OPF_DF) ? '-' : '+'; |
6356 | if (po->flags & OPF_REP) { |
acd03176 |
6357 | assert_operand_cnt(3); |
591721d7 |
6358 | fprintf(fout, |
7f20f633 |
6359 | " while (ecx != 0) {\n"); |
591721d7 |
6360 | fprintf(fout, |
1f84f6b3 |
6361 | " cond_z = (%seax == %sedi); edi %c= %d;\n", |
3947cf24 |
6362 | lmod_cast_u(po, po->operand[1].lmod), |
6363 | lmod_cast_u_ptr(po, po->operand[1].lmod), l, j); |
1f84f6b3 |
6364 | fprintf(fout, |
7f20f633 |
6365 | " ecx--;\n" |
1f84f6b3 |
6366 | " if (cond_z %s 0) break;\n", |
591721d7 |
6367 | (po->flags & OPF_REPZ) ? "==" : "!="); |
6368 | fprintf(fout, |
1f84f6b3 |
6369 | " }"); |
591721d7 |
6370 | snprintf(g_comment, sizeof(g_comment), "rep%s scas", |
6371 | (po->flags & OPF_REPZ) ? "e" : "ne"); |
6372 | } |
6373 | else { |
acd03176 |
6374 | assert_operand_cnt(2); |
05381e4a |
6375 | fprintf(fout, " cond_z = (%seax == %sedi); edi %c= %d;", |
3947cf24 |
6376 | lmod_cast_u(po, po->operand[1].lmod), |
6377 | lmod_cast_u_ptr(po, po->operand[1].lmod), l, j); |
591721d7 |
6378 | strcpy(g_comment, "scas"); |
6379 | } |
6380 | pfomask &= ~(1 << PFO_Z); |
6381 | last_arith_dst = NULL; |
6382 | delayed_flag_op = NULL; |
6383 | break; |
6384 | |
850c9265 |
6385 | // arithmetic w/flags |
850c9265 |
6386 | case OP_AND: |
2b70f6d3 |
6387 | if (po->operand[1].type == OPT_CONST && !po->operand[1].val) |
6388 | goto dualop_arith_const; |
6389 | propagate_lmod(po, &po->operand[0], &po->operand[1]); |
6390 | goto dualop_arith; |
6391 | |
850c9265 |
6392 | case OP_OR: |
5101a5f9 |
6393 | propagate_lmod(po, &po->operand[0], &po->operand[1]); |
2b70f6d3 |
6394 | if (po->operand[1].type == OPT_CONST) { |
6395 | j = lmod_bytes(po, po->operand[0].lmod); |
6396 | if (((1ull << j * 8) - 1) == po->operand[1].val) |
6397 | goto dualop_arith_const; |
6398 | } |
6399 | goto dualop_arith; |
6400 | |
850c9265 |
6401 | dualop_arith: |
6402 | assert_operand_cnt(2); |
850c9265 |
6403 | fprintf(fout, " %s %s= %s;", |
6404 | out_dst_opr(buf1, sizeof(buf1), po, &po->operand[0]), |
6405 | op_to_c(po), |
3ebea2cf |
6406 | out_src_opr_u32(buf2, sizeof(buf2), po, &po->operand[1])); |
04f8a628 |
6407 | output_std_flags(fout, po, &pfomask, buf1); |
6408 | last_arith_dst = &po->operand[0]; |
6409 | delayed_flag_op = NULL; |
6410 | break; |
6411 | |
2b70f6d3 |
6412 | dualop_arith_const: |
6413 | // and 0, or ~0 used instead mov |
6414 | assert_operand_cnt(2); |
6415 | fprintf(fout, " %s = %s;", |
6416 | out_dst_opr(buf1, sizeof(buf1), po, &po->operand[0]), |
6417 | out_src_opr(buf2, sizeof(buf2), po, &po->operand[1], |
6418 | default_cast_to(buf3, sizeof(buf3), &po->operand[0]), 0)); |
6419 | output_std_flags(fout, po, &pfomask, buf1); |
6420 | last_arith_dst = &po->operand[0]; |
6421 | delayed_flag_op = NULL; |
6422 | break; |
6423 | |
04f8a628 |
6424 | case OP_SHL: |
6425 | case OP_SHR: |
6426 | assert_operand_cnt(2); |
6427 | out_dst_opr(buf1, sizeof(buf1), po, &po->operand[0]); |
6428 | if (pfomask & (1 << PFO_C)) { |
6429 | if (po->operand[1].type == OPT_CONST) { |
6430 | l = lmod_bytes(po, po->operand[0].lmod) * 8; |
6431 | j = po->operand[1].val; |
6432 | j %= l; |
6433 | if (j != 0) { |
6434 | if (po->op == OP_SHL) |
6435 | j = l - j; |
6436 | else |
6437 | j -= 1; |
cb090db0 |
6438 | fprintf(fout, " cond_c = (%s >> %d) & 1;\n", |
6439 | buf1, j); |
04f8a628 |
6440 | } |
6441 | else |
6442 | ferr(po, "zero shift?\n"); |
6443 | } |
6444 | else |
6445 | ferr(po, "TODO\n"); |
6446 | pfomask &= ~(1 << PFO_C); |
840257f6 |
6447 | } |
04abc5d6 |
6448 | fprintf(fout, " %s %s= %s", buf1, op_to_c(po), |
04f8a628 |
6449 | out_src_opr_u32(buf2, sizeof(buf2), po, &po->operand[1])); |
04abc5d6 |
6450 | if (po->operand[1].type != OPT_CONST) |
6451 | fprintf(fout, " & 0x1f"); |
6452 | fprintf(fout, ";"); |
04f8a628 |
6453 | output_std_flags(fout, po, &pfomask, buf1); |
850c9265 |
6454 | last_arith_dst = &po->operand[0]; |
69a3cdfc |
6455 | delayed_flag_op = NULL; |
850c9265 |
6456 | break; |
6457 | |
d4e3b5db |
6458 | case OP_SAR: |
6459 | assert_operand_cnt(2); |
6460 | out_dst_opr(buf1, sizeof(buf1), po, &po->operand[0]); |
6461 | fprintf(fout, " %s = %s%s >> %s;", buf1, |
6462 | lmod_cast_s(po, po->operand[0].lmod), buf1, |
3ebea2cf |
6463 | out_src_opr_u32(buf2, sizeof(buf2), po, &po->operand[1])); |
04f8a628 |
6464 | output_std_flags(fout, po, &pfomask, buf1); |
d4e3b5db |
6465 | last_arith_dst = &po->operand[0]; |
6466 | delayed_flag_op = NULL; |
6467 | break; |
6468 | |
04abc5d6 |
6469 | case OP_SHLD: |
3b2f4044 |
6470 | case OP_SHRD: |
6471 | assert_operand_cnt(3); |
6472 | propagate_lmod(po, &po->operand[0], &po->operand[1]); |
6473 | l = lmod_bytes(po, po->operand[0].lmod) * 8; |
3b2f4044 |
6474 | out_src_opr_u32(buf3, sizeof(buf3), po, &po->operand[2]); |
acd03176 |
6475 | if (po->operand[2].type != OPT_CONST) { |
6476 | // no handling for "undefined" case, hopefully not needed |
6477 | snprintf(buf2, sizeof(buf2), "(%s & 0x1f)", buf3); |
6478 | strcpy(buf3, buf2); |
6479 | } |
6480 | out_src_opr_u32(buf2, sizeof(buf2), po, &po->operand[1]); |
6481 | out_dst_opr(buf1, sizeof(buf1), po, &po->operand[0]); |
04abc5d6 |
6482 | if (po->op == OP_SHLD) { |
6483 | fprintf(fout, " %s <<= %s; %s |= %s >> (%d - %s);", |
6484 | buf1, buf3, buf1, buf2, l, buf3); |
6485 | strcpy(g_comment, "shld"); |
6486 | } |
6487 | else { |
6488 | fprintf(fout, " %s >>= %s; %s |= %s << (%d - %s);", |
6489 | buf1, buf3, buf1, buf2, l, buf3); |
6490 | strcpy(g_comment, "shrd"); |
6491 | } |
3b2f4044 |
6492 | output_std_flags(fout, po, &pfomask, buf1); |
6493 | last_arith_dst = &po->operand[0]; |
6494 | delayed_flag_op = NULL; |
6495 | break; |
6496 | |
d4e3b5db |
6497 | case OP_ROL: |
6498 | case OP_ROR: |
6499 | assert_operand_cnt(2); |
6500 | out_dst_opr(buf1, sizeof(buf1), po, &po->operand[0]); |
6501 | if (po->operand[1].type == OPT_CONST) { |
6502 | j = po->operand[1].val; |
6503 | j %= lmod_bytes(po, po->operand[0].lmod) * 8; |
6504 | fprintf(fout, po->op == OP_ROL ? |
6505 | " %s = (%s << %d) | (%s >> %d);" : |
6506 | " %s = (%s >> %d) | (%s << %d);", |
6507 | buf1, buf1, j, buf1, |
6508 | lmod_bytes(po, po->operand[0].lmod) * 8 - j); |
6509 | } |
6510 | else |
6511 | ferr(po, "TODO\n"); |
04f8a628 |
6512 | output_std_flags(fout, po, &pfomask, buf1); |
d4e3b5db |
6513 | last_arith_dst = &po->operand[0]; |
6514 | delayed_flag_op = NULL; |
6515 | break; |
6516 | |
cb090db0 |
6517 | case OP_RCL: |
6518 | case OP_RCR: |
6519 | assert_operand_cnt(2); |
6520 | out_dst_opr(buf1, sizeof(buf1), po, &po->operand[0]); |
6521 | l = lmod_bytes(po, po->operand[0].lmod) * 8; |
6522 | if (po->operand[1].type == OPT_CONST) { |
6523 | j = po->operand[1].val % l; |
6524 | if (j == 0) |
6525 | ferr(po, "zero rotate\n"); |
6526 | fprintf(fout, " tmp = (%s >> %d) & 1;\n", |
6527 | buf1, (po->op == OP_RCL) ? (l - j) : (j - 1)); |
6528 | if (po->op == OP_RCL) { |
6529 | fprintf(fout, |
6530 | " %s = (%s << %d) | (cond_c << %d)", |
6531 | buf1, buf1, j, j - 1); |
6532 | if (j != 1) |
6533 | fprintf(fout, " | (%s >> %d)", buf1, l + 1 - j); |
6534 | } |
6535 | else { |
6536 | fprintf(fout, |
6537 | " %s = (%s >> %d) | (cond_c << %d)", |
6538 | buf1, buf1, j, l - j); |
6539 | if (j != 1) |
6540 | fprintf(fout, " | (%s << %d)", buf1, l + 1 - j); |
6541 | } |
6542 | fprintf(fout, ";\n"); |
6543 | fprintf(fout, " cond_c = tmp;"); |
6544 | } |
6545 | else |
6546 | ferr(po, "TODO\n"); |
6547 | strcpy(g_comment, (po->op == OP_RCL) ? "rcl" : "rcr"); |
6548 | output_std_flags(fout, po, &pfomask, buf1); |
6549 | last_arith_dst = &po->operand[0]; |
6550 | delayed_flag_op = NULL; |
6551 | break; |
6552 | |
5101a5f9 |
6553 | case OP_XOR: |
850c9265 |
6554 | assert_operand_cnt(2); |
6555 | propagate_lmod(po, &po->operand[0], &po->operand[1]); |
5101a5f9 |
6556 | if (IS(opr_name(po, 0), opr_name(po, 1))) { |
6557 | // special case for XOR |
7f20f633 |
6558 | int z = PFOB_O | PFOB_C | PFOB_S | (1 << PFO_L); |
6559 | for (j = 0; j <= PFO_LE; j++) { |
6560 | if (pfomask & (1 << j)) { |
6561 | fprintf(fout, " cond_%s = %d;\n", |
6562 | parsed_flag_op_names[j], (1 << j) & z ? 0 : 1); |
6563 | pfomask &= ~(1 << j); |
6564 | } |
2fe80fdb |
6565 | } |
5101a5f9 |
6566 | fprintf(fout, " %s = 0;", |
6567 | out_dst_opr(buf1, sizeof(buf1), po, &po->operand[0])); |
6568 | last_arith_dst = &po->operand[0]; |
6569 | delayed_flag_op = NULL; |
850c9265 |
6570 | break; |
850c9265 |
6571 | } |
5101a5f9 |
6572 | goto dualop_arith; |
6573 | |
2fe80fdb |
6574 | case OP_ADD: |
6575 | assert_operand_cnt(2); |
6576 | propagate_lmod(po, &po->operand[0], &po->operand[1]); |
6577 | if (pfomask & (1 << PFO_C)) { |
c8dbc5be |
6578 | out_src_opr_u32(buf1, sizeof(buf1), po, &po->operand[0]); |
6579 | out_src_opr_u32(buf2, sizeof(buf2), po, &po->operand[1]); |
6580 | if (po->operand[0].lmod == OPLM_DWORD) { |
6581 | fprintf(fout, " tmp64 = (u64)%s + %s;\n", buf1, buf2); |
6582 | fprintf(fout, " cond_c = tmp64 >> 32;\n"); |
6583 | fprintf(fout, " %s = (u32)tmp64;", |
6584 | out_dst_opr(buf1, sizeof(buf1), po, &po->operand[0])); |
d4a985bd |
6585 | strcat(g_comment, " add64"); |
c8dbc5be |
6586 | } |
6587 | else { |
6588 | fprintf(fout, " cond_c = ((u32)%s + %s) >> %d;\n", |
6589 | buf1, buf2, lmod_bytes(po, po->operand[0].lmod) * 8); |
6590 | fprintf(fout, " %s += %s;", |
6591 | out_dst_opr(buf1, sizeof(buf1), po, &po->operand[0]), |
6592 | buf2); |
6593 | } |
2fe80fdb |
6594 | pfomask &= ~(1 << PFO_C); |
6595 | output_std_flags(fout, po, &pfomask, buf1); |
6596 | last_arith_dst = &po->operand[0]; |
6597 | delayed_flag_op = NULL; |
6598 | break; |
6599 | } |
16057ce1 |
6600 | if (pfomask & (1 << PFO_LE)) { |
6601 | out_cmp_for_cc(buf1, sizeof(buf1), po, PFO_LE, 0, 1); |
6602 | fprintf(fout, " cond_%s = %s;\n", |
6603 | parsed_flag_op_names[PFO_LE], buf1); |
6604 | pfomask &= ~(1 << PFO_LE); |
6605 | } |
2fe80fdb |
6606 | goto dualop_arith; |
6607 | |
6608 | case OP_SUB: |
6609 | assert_operand_cnt(2); |
6610 | propagate_lmod(po, &po->operand[0], &po->operand[1]); |
3b2f4044 |
6611 | if (pfomask & ~((1 << PFO_Z) | (1 << PFO_S))) { |
6612 | for (j = 0; j <= PFO_LE; j++) { |
6613 | if (!(pfomask & (1 << j))) |
6614 | continue; |
6615 | if (j == PFO_Z || j == PFO_S) |
6616 | continue; |
6617 | |
16057ce1 |
6618 | out_cmp_for_cc(buf1, sizeof(buf1), po, j, 0, 0); |
3b2f4044 |
6619 | fprintf(fout, " cond_%s = %s;\n", |
6620 | parsed_flag_op_names[j], buf1); |
6621 | pfomask &= ~(1 << j); |
6622 | } |
2fe80fdb |
6623 | } |
6624 | goto dualop_arith; |
6625 | |
5101a5f9 |
6626 | case OP_ADC: |
850c9265 |
6627 | case OP_SBB: |
5101a5f9 |
6628 | assert_operand_cnt(2); |
6629 | propagate_lmod(po, &po->operand[0], &po->operand[1]); |
a2c1d768 |
6630 | out_dst_opr(buf1, sizeof(buf1), po, &po->operand[0]); |
840257f6 |
6631 | if (po->op == OP_SBB |
6632 | && IS(po->operand[0].name, po->operand[1].name)) |
6633 | { |
6634 | // avoid use of unitialized var |
a2c1d768 |
6635 | fprintf(fout, " %s = -cond_c;", buf1); |
94d447fb |
6636 | // carry remains what it was |
6637 | pfomask &= ~(1 << PFO_C); |
840257f6 |
6638 | } |
6639 | else { |
a2c1d768 |
6640 | fprintf(fout, " %s %s= %s + cond_c;", buf1, op_to_c(po), |
3ebea2cf |
6641 | out_src_opr_u32(buf2, sizeof(buf2), po, &po->operand[1])); |
840257f6 |
6642 | } |
a2c1d768 |
6643 | output_std_flags(fout, po, &pfomask, buf1); |
5101a5f9 |
6644 | last_arith_dst = &po->operand[0]; |
6645 | delayed_flag_op = NULL; |
850c9265 |
6646 | break; |
6647 | |
1f84f6b3 |
6648 | case OP_BSF: |
6649 | assert_operand_cnt(2); |
6650 | out_src_opr_u32(buf2, sizeof(buf2), po, &po->operand[1]); |
6651 | fprintf(fout, " %s = %s ? __builtin_ffs(%s) - 1 : 0;", |
6652 | out_dst_opr(buf1, sizeof(buf1), po, &po->operand[0]), |
6653 | buf2, buf2); |
6654 | output_std_flags(fout, po, &pfomask, buf1); |
6655 | last_arith_dst = &po->operand[0]; |
6656 | delayed_flag_op = NULL; |
d4a985bd |
6657 | strcat(g_comment, " bsf"); |
1f84f6b3 |
6658 | break; |
6659 | |
850c9265 |
6660 | case OP_DEC: |
90307a99 |
6661 | if (pfomask & ~(PFOB_S | PFOB_S | PFOB_C)) { |
6662 | for (j = 0; j <= PFO_LE; j++) { |
6663 | if (!(pfomask & (1 << j))) |
6664 | continue; |
6665 | if (j == PFO_Z || j == PFO_S || j == PFO_C) |
6666 | continue; |
6667 | |
16057ce1 |
6668 | out_cmp_for_cc(buf1, sizeof(buf1), po, j, 0, 0); |
90307a99 |
6669 | fprintf(fout, " cond_%s = %s;\n", |
6670 | parsed_flag_op_names[j], buf1); |
6671 | pfomask &= ~(1 << j); |
6672 | } |
6673 | } |
6674 | // fallthrough |
6675 | |
6676 | case OP_INC: |
6677 | if (pfomask & (1 << PFO_C)) |
6678 | // carry is unaffected by inc/dec.. wtf? |
6679 | ferr(po, "carry propagation needed\n"); |
6680 | |
850c9265 |
6681 | out_dst_opr(buf1, sizeof(buf1), po, &po->operand[0]); |
1bafb621 |
6682 | if (po->operand[0].type == OPT_REG) { |
6683 | strcpy(buf2, po->op == OP_INC ? "++" : "--"); |
6684 | fprintf(fout, " %s%s;", buf1, buf2); |
6685 | } |
6686 | else { |
6687 | strcpy(buf2, po->op == OP_INC ? "+" : "-"); |
6688 | fprintf(fout, " %s %s= 1;", buf1, buf2); |
6689 | } |
a2c1d768 |
6690 | output_std_flags(fout, po, &pfomask, buf1); |
5101a5f9 |
6691 | last_arith_dst = &po->operand[0]; |
6692 | delayed_flag_op = NULL; |
6693 | break; |
6694 | |
6695 | case OP_NEG: |
6696 | out_dst_opr(buf1, sizeof(buf1), po, &po->operand[0]); |
3ebea2cf |
6697 | out_src_opr_u32(buf2, sizeof(buf2), po, &po->operand[0]); |
5101a5f9 |
6698 | fprintf(fout, " %s = -%s%s;", buf1, |
6699 | lmod_cast_s(po, po->operand[0].lmod), buf2); |
850c9265 |
6700 | last_arith_dst = &po->operand[0]; |
69a3cdfc |
6701 | delayed_flag_op = NULL; |
940e8e66 |
6702 | if (pfomask & (1 << PFO_C)) { |
6703 | fprintf(fout, "\n cond_c = (%s != 0);", buf1); |
6704 | pfomask &= ~(1 << PFO_C); |
6705 | } |
850c9265 |
6706 | break; |
6707 | |
6708 | case OP_IMUL: |
de50b98b |
6709 | if (po->operand_cnt == 2) { |
6710 | propagate_lmod(po, &po->operand[0], &po->operand[1]); |
850c9265 |
6711 | goto dualop_arith; |
de50b98b |
6712 | } |
87bf6cec |
6713 | if (po->operand_cnt == 3) |
6714 | ferr(po, "TODO imul3\n"); |
6715 | // fallthrough |
6716 | case OP_MUL: |
6717 | assert_operand_cnt(1); |
c8dbc5be |
6718 | switch (po->operand[0].lmod) { |
6719 | case OPLM_DWORD: |
6720 | strcpy(buf1, po->op == OP_IMUL ? "(s64)(s32)" : "(u64)"); |
6721 | fprintf(fout, " tmp64 = %seax * %s%s;\n", buf1, buf1, |
6722 | out_src_opr_u32(buf2, sizeof(buf2), po, &po->operand[0])); |
6723 | fprintf(fout, " edx = tmp64 >> 32;\n"); |
6724 | fprintf(fout, " eax = tmp64;"); |
6725 | break; |
6726 | case OPLM_BYTE: |
6727 | strcpy(buf1, po->op == OP_IMUL ? "(s16)(s8)" : "(u16)(u8)"); |
6728 | fprintf(fout, " LOWORD(eax) = %seax * %s;", buf1, |
6729 | out_src_opr(buf2, sizeof(buf2), po, &po->operand[0], |
6730 | buf1, 0)); |
6731 | break; |
6732 | default: |
6733 | ferr(po, "TODO: unhandled mul type\n"); |
6734 | break; |
6735 | } |
87bf6cec |
6736 | last_arith_dst = NULL; |
69a3cdfc |
6737 | delayed_flag_op = NULL; |
91977a1c |
6738 | break; |
6739 | |
5101a5f9 |
6740 | case OP_DIV: |
6741 | case OP_IDIV: |
6742 | assert_operand_cnt(1); |
cb090db0 |
6743 | out_src_opr_u32(buf1, sizeof(buf1), po, &po->operand[0]); |
acd03176 |
6744 | strcpy(cast, lmod_cast(po, po->operand[0].lmod, |
cb090db0 |
6745 | po->op == OP_IDIV)); |
6746 | switch (po->operand[0].lmod) { |
6747 | case OPLM_DWORD: |
6748 | if (po->flags & OPF_32BIT) |
acd03176 |
6749 | snprintf(buf2, sizeof(buf2), "%seax", cast); |
cb090db0 |
6750 | else { |
6751 | fprintf(fout, " tmp64 = ((u64)edx << 32) | eax;\n"); |
acd03176 |
6752 | snprintf(buf2, sizeof(buf2), "%stmp64", |
cb090db0 |
6753 | (po->op == OP_IDIV) ? "(s64)" : ""); |
6754 | } |
6755 | if (po->operand[0].type == OPT_REG |
6756 | && po->operand[0].reg == xDX) |
6757 | { |
acd03176 |
6758 | fprintf(fout, " eax = %s / %s%s;\n", buf2, cast, buf1); |
6759 | fprintf(fout, " edx = %s %% %s%s;", buf2, cast, buf1); |
6760 | } |
6761 | else { |
6762 | fprintf(fout, " edx = %s %% %s%s;\n", buf2, cast, buf1); |
6763 | fprintf(fout, " eax = %s / %s%s;", buf2, cast, buf1); |
6764 | } |
6765 | break; |
6766 | case OPLM_WORD: |
6767 | fprintf(fout, " tmp = (edx << 16) | (eax & 0xffff);\n"); |
6768 | snprintf(buf2, sizeof(buf2), "%stmp", |
6769 | (po->op == OP_IDIV) ? "(s32)" : ""); |
6770 | if (po->operand[0].type == OPT_REG |
6771 | && po->operand[0].reg == xDX) |
6772 | { |
6773 | fprintf(fout, " LOWORD(eax) = %s / %s%s;\n", |
6774 | buf2, cast, buf1); |
6775 | fprintf(fout, " LOWORD(edx) = %s %% %s%s;", |
6776 | buf2, cast, buf1); |
cb090db0 |
6777 | } |
6778 | else { |
acd03176 |
6779 | fprintf(fout, " LOWORD(edx) = %s %% %s%s;\n", |
6780 | buf2, cast, buf1); |
6781 | fprintf(fout, " LOWORD(eax) = %s / %s%s;", |
6782 | buf2, cast, buf1); |
cb090db0 |
6783 | } |
d4a985bd |
6784 | strcat(g_comment, " div16"); |
cb090db0 |
6785 | break; |
6786 | default: |
acd03176 |
6787 | ferr(po, "unhandled div lmod %d\n", po->operand[0].lmod); |
5101a5f9 |
6788 | } |
87bf6cec |
6789 | last_arith_dst = NULL; |
6790 | delayed_flag_op = NULL; |
5101a5f9 |
6791 | break; |
6792 | |
91977a1c |
6793 | case OP_TEST: |
6794 | case OP_CMP: |
850c9265 |
6795 | propagate_lmod(po, &po->operand[0], &po->operand[1]); |
940e8e66 |
6796 | if (pfomask != 0) { |
69a3cdfc |
6797 | for (j = 0; j < 8; j++) { |
940e8e66 |
6798 | if (pfomask & (1 << j)) { |
69a3cdfc |
6799 | out_cmp_test(buf1, sizeof(buf1), po, j, 0); |
6800 | fprintf(fout, " cond_%s = %s;", |
6801 | parsed_flag_op_names[j], buf1); |
6802 | } |
6803 | } |
940e8e66 |
6804 | pfomask = 0; |
69a3cdfc |
6805 | } |
6806 | else |
6807 | no_output = 1; |
7ba45c34 |
6808 | last_arith_dst = NULL; |
69a3cdfc |
6809 | delayed_flag_op = po; |
91977a1c |
6810 | break; |
6811 | |
092f64e1 |
6812 | case OP_SCC: |
6813 | // SETcc - should already be handled |
6814 | break; |
6815 | |
69a3cdfc |
6816 | // note: we reuse OP_Jcc for SETcc, only flags differ |
092f64e1 |
6817 | case OP_JCC: |
6818 | fprintf(fout, "\n goto %s;", po->operand[0].name); |
850c9265 |
6819 | break; |
6820 | |
5c024ef7 |
6821 | case OP_JECXZ: |
6822 | fprintf(fout, " if (ecx == 0)\n"); |
6823 | fprintf(fout, " goto %s;", po->operand[0].name); |
d4a985bd |
6824 | strcat(g_comment, " jecxz"); |
5c024ef7 |
6825 | break; |
6826 | |
04abc5d6 |
6827 | case OP_LOOP: |
3947cf24 |
6828 | fprintf(fout, " if (--ecx != 0)\n"); |
04abc5d6 |
6829 | fprintf(fout, " goto %s;", po->operand[0].name); |
d4a985bd |
6830 | strcat(g_comment, " loop"); |
04abc5d6 |
6831 | break; |
6832 | |
850c9265 |
6833 | case OP_JMP: |
87bf6cec |
6834 | assert_operand_cnt(1); |
de50b98b |
6835 | last_arith_dst = NULL; |
6836 | delayed_flag_op = NULL; |
6837 | |
4c45fa73 |
6838 | if (po->operand[0].type == OPT_REGMEM) { |
6839 | ret = sscanf(po->operand[0].name, "%[^[][%[^*]*4]", |
6840 | buf1, buf2); |
6841 | if (ret != 2) |
6842 | ferr(po, "parse failure for jmp '%s'\n", |
6843 | po->operand[0].name); |
6844 | fprintf(fout, " goto *jt_%s[%s];", buf1, buf2); |
6845 | break; |
6846 | } |
6847 | else if (po->operand[0].type != OPT_LABEL) |
6848 | ferr(po, "unhandled jmp type\n"); |
87bf6cec |
6849 | |
850c9265 |
6850 | fprintf(fout, " goto %s;", po->operand[0].name); |
91977a1c |
6851 | break; |
6852 | |
6853 | case OP_CALL: |
5101a5f9 |
6854 | assert_operand_cnt(1); |
092f64e1 |
6855 | pp = po->pp; |
89ff3147 |
6856 | my_assert_not(pp, NULL); |
91977a1c |
6857 | |
092f64e1 |
6858 | strcpy(buf3, " "); |
6859 | if (po->flags & OPF_CC) { |
6860 | // we treat conditional branch to another func |
6861 | // (yes such code exists..) as conditional tailcall |
6862 | strcat(buf3, " "); |
6863 | fprintf(fout, " {\n"); |
6864 | } |
6865 | |
8eb12e72 |
6866 | if (pp->is_fptr && !pp->is_arg) { |
092f64e1 |
6867 | fprintf(fout, "%s%s = %s;\n", buf3, pp->name, |
1cd4a663 |
6868 | out_src_opr(buf1, sizeof(buf1), po, &po->operand[0], |
6869 | "(void *)", 0)); |
8eb12e72 |
6870 | if (pp->is_unresolved) |
6871 | fprintf(fout, "%sunresolved_call(\"%s:%d\", %s);\n", |
6872 | buf3, asmfn, po->asmln, pp->name); |
6873 | } |
1bafb621 |
6874 | |
092f64e1 |
6875 | fprintf(fout, "%s", buf3); |
2b43685d |
6876 | if (strstr(pp->ret_type.name, "int64")) { |
87bf6cec |
6877 | if (po->flags & OPF_TAIL) |
2b43685d |
6878 | ferr(po, "int64 and tail?\n"); |
2fe80fdb |
6879 | fprintf(fout, "tmp64 = "); |
2b43685d |
6880 | } |
6881 | else if (!IS(pp->ret_type.name, "void")) { |
6882 | if (po->flags & OPF_TAIL) { |
d4a985bd |
6883 | if (regmask_ret & mxAX) { |
840257f6 |
6884 | fprintf(fout, "return "); |
6885 | if (g_func_pp->ret_type.is_ptr != pp->ret_type.is_ptr) |
6886 | fprintf(fout, "(%s)", g_func_pp->ret_type.name); |
6887 | } |
d4a985bd |
6888 | else if (regmask_ret & mxST0) |
6889 | ferr(po, "float tailcall\n"); |
2b43685d |
6890 | } |
d4a985bd |
6891 | else if (po->regmask_dst & mxAX) { |
87bf6cec |
6892 | fprintf(fout, "eax = "); |
2b43685d |
6893 | if (pp->ret_type.is_ptr) |
6894 | fprintf(fout, "(u32)"); |
6895 | } |
d4a985bd |
6896 | else if (po->regmask_dst & mxST0) { |
fe18df39 |
6897 | ferr_assert(po, po->flags & OPF_FPUSH); |
6898 | if (need_float_stack) |
6899 | fprintf(fout, "f_st[--f_stp & 7] = "); |
6900 | else |
6901 | fprintf(fout, "f_st0 = "); |
d4a985bd |
6902 | } |
91977a1c |
6903 | } |
87bf6cec |
6904 | |
ddaf8bd7 |
6905 | if (pp->name[0] == 0) |
6906 | ferr(po, "missing pp->name\n"); |
6907 | fprintf(fout, "%s%s(", pp->name, |
6908 | pp->has_structarg ? "_sa" : ""); |
39b168b8 |
6909 | |
2fe80fdb |
6910 | if (po->flags & OPF_ATAIL) { |
6911 | if (pp->argc_stack != g_func_pp->argc_stack |
6912 | || (pp->argc_stack > 0 |
6913 | && pp->is_stdcall != g_func_pp->is_stdcall)) |
6914 | ferr(po, "incompatible tailcall\n"); |
1f84f6b3 |
6915 | if (g_func_pp->has_retreg) |
6916 | ferr(po, "TODO: retreg+tailcall\n"); |
87bf6cec |
6917 | |
2fe80fdb |
6918 | for (arg = j = 0; arg < pp->argc; arg++) { |
6919 | if (arg > 0) |
6920 | fprintf(fout, ", "); |
87bf6cec |
6921 | |
2fe80fdb |
6922 | cast[0] = 0; |
6923 | if (pp->arg[arg].type.is_ptr) |
6924 | snprintf(cast, sizeof(cast), "(%s)", |
6925 | pp->arg[arg].type.name); |
91977a1c |
6926 | |
2fe80fdb |
6927 | if (pp->arg[arg].reg != NULL) { |
6928 | fprintf(fout, "%s%s", cast, pp->arg[arg].reg); |
6929 | continue; |
6930 | } |
6931 | // stack arg |
6932 | for (; j < g_func_pp->argc; j++) |
6933 | if (g_func_pp->arg[j].reg == NULL) |
6934 | break; |
6935 | fprintf(fout, "%sa%d", cast, j + 1); |
6936 | j++; |
69a3cdfc |
6937 | } |
2fe80fdb |
6938 | } |
6939 | else { |
6940 | for (arg = 0; arg < pp->argc; arg++) { |
6941 | if (arg > 0) |
6942 | fprintf(fout, ", "); |
6943 | |
6944 | cast[0] = 0; |
6945 | if (pp->arg[arg].type.is_ptr) |
6946 | snprintf(cast, sizeof(cast), "(%s)", |
6947 | pp->arg[arg].type.name); |
6948 | |
6949 | if (pp->arg[arg].reg != NULL) { |
1f84f6b3 |
6950 | if (pp->arg[arg].type.is_retreg) |
6951 | fprintf(fout, "&%s", pp->arg[arg].reg); |
8c83cc48 |
6952 | else if (IS(pp->arg[arg].reg, "ebp") |
6953 | && !(po->flags & OPF_EBP_S)) |
6954 | { |
6955 | // rare special case |
6956 | fprintf(fout, "%s(u32)&sf.b[sizeof(sf)]", cast); |
6957 | strcat(g_comment, " bp_ref"); |
6958 | } |
1f84f6b3 |
6959 | else |
6960 | fprintf(fout, "%s%s", cast, pp->arg[arg].reg); |
2fe80fdb |
6961 | continue; |
6962 | } |
6963 | |
6964 | // stack arg |
6965 | tmp_op = pp->arg[arg].datap; |
6966 | if (tmp_op == NULL) |
6967 | ferr(po, "parsed_op missing for arg%d\n", arg); |
23fd0b11 |
6968 | |
6969 | if (tmp_op->flags & OPF_VAPUSH) { |
6970 | fprintf(fout, "ap"); |
6971 | } |
30620174 |
6972 | else if (tmp_op->op == OP_FST) { |
6973 | fprintf(fout, "fs_%d", tmp_op->p_argnum); |
6974 | if (tmp_op->operand[0].lmod == OPLM_QWORD) |
6975 | arg++; |
6976 | } |
5f70a34f |
6977 | else if (tmp_op->p_argpass != 0) { |
6978 | fprintf(fout, "a%d", tmp_op->p_argpass); |
6979 | } |
8c83cc48 |
6980 | else if (pp->arg[arg].is_saved) { |
6981 | ferr_assert(po, tmp_op->p_argnum > 0); |
3a5101d7 |
6982 | fprintf(fout, "%s%s", cast, |
6983 | saved_arg_name(buf1, sizeof(buf1), |
6984 | tmp_op->p_arggrp, tmp_op->p_argnum)); |
2fe80fdb |
6985 | } |
6986 | else { |
6987 | fprintf(fout, "%s", |
6988 | out_src_opr(buf1, sizeof(buf1), |
6989 | tmp_op, &tmp_op->operand[0], cast, 0)); |
6990 | } |
69a3cdfc |
6991 | } |
91977a1c |
6992 | } |
6993 | fprintf(fout, ");"); |
87bf6cec |
6994 | |
2b43685d |
6995 | if (strstr(pp->ret_type.name, "int64")) { |
6996 | fprintf(fout, "\n"); |
092f64e1 |
6997 | fprintf(fout, "%sedx = tmp64 >> 32;\n", buf3); |
6998 | fprintf(fout, "%seax = tmp64;", buf3); |
2b43685d |
6999 | } |
7000 | |
89ff3147 |
7001 | if (pp->is_unresolved) { |
8eb12e72 |
7002 | snprintf(buf2, sizeof(buf2), " unresolved %dreg", |
89ff3147 |
7003 | pp->argc_reg); |
092f64e1 |
7004 | strcat(g_comment, buf2); |
89ff3147 |
7005 | } |
7006 | |
87bf6cec |
7007 | if (po->flags & OPF_TAIL) { |
840257f6 |
7008 | ret = 0; |
ddaf8bd7 |
7009 | if (i == opcnt - 1 || pp->is_noreturn) |
840257f6 |
7010 | ret = 0; |
7011 | else if (IS(pp->ret_type.name, "void")) |
7012 | ret = 1; |
b2bd20c0 |
7013 | else if (!(regmask_ret & (1 << xAX))) |
840257f6 |
7014 | ret = 1; |
7015 | // else already handled as 'return f()' |
7016 | |
7017 | if (ret) { |
acd03176 |
7018 | fprintf(fout, "\n%sreturn;", buf3); |
7019 | strcat(g_comment, " ^ tailcall"); |
3ebea2cf |
7020 | } |
89ff3147 |
7021 | else |
ddaf8bd7 |
7022 | strcat(g_comment, " tailcall"); |
acd03176 |
7023 | |
7024 | if ((regmask_ret & (1 << xAX)) |
7025 | && IS(pp->ret_type.name, "void") && !pp->is_noreturn) |
7026 | { |
7027 | ferr(po, "int func -> void func tailcall?\n"); |
7028 | } |
87bf6cec |
7029 | } |
ddaf8bd7 |
7030 | if (pp->is_noreturn) |
7031 | strcat(g_comment, " noreturn"); |
2fe80fdb |
7032 | if ((po->flags & OPF_ATAIL) && pp->argc_stack > 0) |
7033 | strcat(g_comment, " argframe"); |
092f64e1 |
7034 | if (po->flags & OPF_CC) |
7035 | strcat(g_comment, " cond"); |
7036 | |
7037 | if (po->flags & OPF_CC) |
7038 | fprintf(fout, "\n }"); |
7039 | |
87bf6cec |
7040 | delayed_flag_op = NULL; |
7041 | last_arith_dst = NULL; |
91977a1c |
7042 | break; |
7043 | |
7044 | case OP_RET: |
bd96f656 |
7045 | if (g_func_pp->is_vararg) |
4f12f671 |
7046 | fprintf(fout, " va_end(ap);\n"); |
1f84f6b3 |
7047 | if (g_func_pp->has_retreg) { |
7048 | for (arg = 0; arg < g_func_pp->argc; arg++) |
7049 | if (g_func_pp->arg[arg].type.is_retreg) |
7050 | fprintf(fout, " *r_%s = %s;\n", |
7051 | g_func_pp->arg[arg].reg, g_func_pp->arg[arg].reg); |
7052 | } |
4f12f671 |
7053 | |
16057ce1 |
7054 | if (regmask_ret & mxST0) { |
7055 | fprintf(fout, " return %s;", float_st0); |
7056 | } |
7057 | else if (!(regmask_ret & mxAX)) { |
3ebea2cf |
7058 | if (i != opcnt - 1 || label_pending) |
7059 | fprintf(fout, " return;"); |
7060 | } |
bd96f656 |
7061 | else if (g_func_pp->ret_type.is_ptr) { |
d4e3b5db |
7062 | fprintf(fout, " return (%s)eax;", |
bd96f656 |
7063 | g_func_pp->ret_type.name); |
3ebea2cf |
7064 | } |
2fe80fdb |
7065 | else if (IS(g_func_pp->ret_type.name, "__int64")) |
7066 | fprintf(fout, " return ((u64)edx << 32) | eax;"); |
91977a1c |
7067 | else |
7068 | fprintf(fout, " return eax;"); |
de50b98b |
7069 | |
7070 | last_arith_dst = NULL; |
7071 | delayed_flag_op = NULL; |
91977a1c |
7072 | break; |
7073 | |
7074 | case OP_PUSH: |
1f84f6b3 |
7075 | out_src_opr_u32(buf1, sizeof(buf1), po, &po->operand[0]); |
5f70a34f |
7076 | if (po->p_argnum != 0) { |
69a3cdfc |
7077 | // special case - saved func arg |
3a5101d7 |
7078 | fprintf(fout, " %s = %s;", |
7079 | saved_arg_name(buf2, sizeof(buf2), |
7080 | po->p_arggrp, po->p_argnum), buf1); |
69a3cdfc |
7081 | break; |
7082 | } |
d4e3b5db |
7083 | else if (po->flags & OPF_RSAVE) { |
d4e3b5db |
7084 | fprintf(fout, " s_%s = %s;", buf1, buf1); |
7085 | break; |
7086 | } |
25a330eb |
7087 | else if (po->flags & OPF_PPUSH) { |
7088 | tmp_op = po->datap; |
7089 | ferr_assert(po, tmp_op != NULL); |
7090 | out_dst_opr(buf2, sizeof(buf2), po, &tmp_op->operand[0]); |
7091 | fprintf(fout, " pp_%s = %s;", buf2, buf1); |
7092 | break; |
7093 | } |
1f84f6b3 |
7094 | else if (g_func_pp->is_userstack) { |
7095 | fprintf(fout, " *(--esp) = %s;", buf1); |
7096 | break; |
7097 | } |
e56ab892 |
7098 | if (!(g_ida_func_attr & IDAFA_NORETURN)) |
7099 | ferr(po, "stray push encountered\n"); |
7100 | no_output = 1; |
91977a1c |
7101 | break; |
7102 | |
7103 | case OP_POP: |
25a330eb |
7104 | out_dst_opr(buf1, sizeof(buf1), po, &po->operand[0]); |
d4e3b5db |
7105 | if (po->flags & OPF_RSAVE) { |
d4e3b5db |
7106 | fprintf(fout, " %s = s_%s;", buf1, buf1); |
7107 | break; |
7108 | } |
25a330eb |
7109 | else if (po->flags & OPF_PPUSH) { |
e83ea7ed |
7110 | // push/pop graph / non-const |
25a330eb |
7111 | ferr_assert(po, po->datap == NULL); |
7112 | fprintf(fout, " %s = pp_%s;", buf1, buf1); |
7113 | break; |
7114 | } |
5c024ef7 |
7115 | else if (po->datap != NULL) { |
7116 | // push/pop pair |
7117 | tmp_op = po->datap; |
5c024ef7 |
7118 | fprintf(fout, " %s = %s;", buf1, |
7119 | out_src_opr(buf2, sizeof(buf2), |
7120 | tmp_op, &tmp_op->operand[0], |
c7ed83dd |
7121 | default_cast_to(buf3, sizeof(buf3), &po->operand[0]), 0)); |
5c024ef7 |
7122 | break; |
7123 | } |
1f84f6b3 |
7124 | else if (g_func_pp->is_userstack) { |
25a330eb |
7125 | fprintf(fout, " %s = *esp++;", buf1); |
1f84f6b3 |
7126 | break; |
7127 | } |
7128 | else |
7129 | ferr(po, "stray pop encountered\n"); |
91977a1c |
7130 | break; |
7131 | |
33c35af6 |
7132 | case OP_NOP: |
2b43685d |
7133 | no_output = 1; |
33c35af6 |
7134 | break; |
7135 | |
622eb2ef |
7136 | // pseudo ops |
7137 | case OPP_ALLSHL: |
7138 | case OPP_ALLSHR: |
7139 | fprintf(fout, " tmp64 = ((u64)edx << 32) | eax;\n"); |
8c83cc48 |
7140 | fprintf(fout, " tmp64 = (s64)tmp64 %s LOBYTE(ecx);\n", |
622eb2ef |
7141 | po->op == OPP_ALLSHL ? "<<" : ">>"); |
7142 | fprintf(fout, " edx = tmp64 >> 32; eax = tmp64;"); |
7143 | strcat(g_comment, po->op == OPP_ALLSHL |
7144 | ? " allshl" : " allshr"); |
7145 | break; |
7146 | |
d4a985bd |
7147 | // x87 |
7148 | case OP_FLD: |
fe18df39 |
7149 | if (need_float_stack) { |
7150 | out_src_opr_float(buf1, sizeof(buf1), |
7151 | po, &po->operand[0], 1); |
7152 | if (po->regmask_src & mxSTa) { |
7153 | fprintf(fout, " f_st[(f_stp - 1) & 7] = %s; f_stp--;", |
7154 | buf1); |
7155 | } |
7156 | else |
7157 | fprintf(fout, " f_st[--f_stp & 7] = %s;", buf1); |
7158 | } |
7159 | else { |
7160 | if (po->flags & OPF_FSHIFT) |
7161 | fprintf(fout, " f_st1 = f_st0;"); |
7162 | if (po->operand[0].type == OPT_REG |
7163 | && po->operand[0].reg == xST0) |
7164 | { |
7165 | strcat(g_comment, " fld st"); |
7166 | break; |
7167 | } |
7168 | fprintf(fout, " f_st0 = %s;", |
7169 | out_src_opr_float(buf1, sizeof(buf1), |
7170 | po, &po->operand[0], 0)); |
d4a985bd |
7171 | } |
d4a985bd |
7172 | strcat(g_comment, " fld"); |
7173 | break; |
7174 | |
7175 | case OP_FILD: |
fe18df39 |
7176 | out_src_opr(buf1, sizeof(buf1), po, &po->operand[0], |
7177 | lmod_cast(po, po->operand[0].lmod, 1), 0); |
7178 | snprintf(buf2, sizeof(buf2), "(%s)%s", float_type, buf1); |
7179 | if (need_float_stack) { |
7180 | fprintf(fout, " f_st[--f_stp & 7] = %s;", buf2); |
7181 | } |
7182 | else { |
7183 | if (po->flags & OPF_FSHIFT) |
7184 | fprintf(fout, " f_st1 = f_st0;"); |
7185 | fprintf(fout, " f_st0 = %s;", buf2); |
7186 | } |
d4a985bd |
7187 | strcat(g_comment, " fild"); |
7188 | break; |
7189 | |
7190 | case OP_FLDc: |
fe18df39 |
7191 | if (need_float_stack) |
7192 | fprintf(fout, " f_st[--f_stp & 7] = "); |
7193 | else { |
7194 | if (po->flags & OPF_FSHIFT) |
7195 | fprintf(fout, " f_st1 = f_st0;"); |
7196 | fprintf(fout, " f_st0 = "); |
7197 | } |
d4a985bd |
7198 | switch (po->operand[0].val) { |
fe18df39 |
7199 | case X87_CONST_1: fprintf(fout, "1.0;"); break; |
7200 | case X87_CONST_LN2: fprintf(fout, "0.693147180559945;"); break; |
7201 | case X87_CONST_Z: fprintf(fout, "0.0;"); break; |
d4a985bd |
7202 | default: ferr(po, "TODO\n"); break; |
7203 | } |
7204 | break; |
7205 | |
7206 | case OP_FST: |
30620174 |
7207 | if (po->flags & OPF_FARG) { |
7208 | // store to stack as func arg |
7209 | snprintf(buf1, sizeof(buf1), "fs_%d", po->p_argnum); |
7210 | dead_dst = 0; |
7211 | } |
7212 | else { |
7213 | out_dst_opr_float(buf1, sizeof(buf1), po, &po->operand[0], |
7214 | need_float_stack); |
7215 | dead_dst = po->operand[0].type == OPT_REG |
7216 | && po->operand[0].reg == xST0; |
fe18df39 |
7217 | } |
30620174 |
7218 | if (!dead_dst) |
7219 | fprintf(fout, " %s = %s;", buf1, float_st0); |
16057ce1 |
7220 | if (po->flags & OPF_FSHIFT) { |
7221 | if (need_float_stack) |
7222 | fprintf(fout, " f_stp++;"); |
7223 | else |
fe18df39 |
7224 | fprintf(fout, " f_st0 = f_st1;"); |
d4a985bd |
7225 | } |
fe18df39 |
7226 | if (dead_dst && !(po->flags & OPF_FSHIFT)) |
7227 | no_output = 1; |
7228 | else |
7229 | strcat(g_comment, " fst"); |
d4a985bd |
7230 | break; |
7231 | |
16057ce1 |
7232 | case OP_FIST: |
7233 | fprintf(fout, " %s = %s%s;", |
7234 | out_dst_opr(buf1, sizeof(buf1), po, &po->operand[0]), |
7235 | lmod_cast(po, po->operand[0].lmod, 1), float_st0); |
7236 | if (po->flags & OPF_FSHIFT) { |
7237 | if (need_float_stack) |
7238 | fprintf(fout, " f_stp++;"); |
7239 | else |
7240 | fprintf(fout, " f_st0 = f_st1;"); |
7241 | } |
7242 | strcat(g_comment, " fist"); |
7243 | break; |
7244 | |
d4a985bd |
7245 | case OP_FADD: |
7246 | case OP_FDIV: |
7247 | case OP_FMUL: |
7248 | case OP_FSUB: |
fe18df39 |
7249 | out_dst_opr_float(buf1, sizeof(buf1), po, &po->operand[0], |
7250 | need_float_stack); |
7251 | out_src_opr_float(buf2, sizeof(buf2), po, &po->operand[1], |
7252 | need_float_stack); |
7253 | dead_dst = (po->flags & OPF_FPOP) |
7254 | && po->operand[0].type == OPT_REG |
7255 | && po->operand[0].reg == xST0; |
d4a985bd |
7256 | switch (po->op) { |
7257 | case OP_FADD: j = '+'; break; |
7258 | case OP_FDIV: j = '/'; break; |
7259 | case OP_FMUL: j = '*'; break; |
7260 | case OP_FSUB: j = '-'; break; |
7261 | default: j = 'x'; break; |
7262 | } |
fe18df39 |
7263 | if (need_float_stack) { |
7264 | if (!dead_dst) |
7265 | fprintf(fout, " %s %c= %s;", buf1, j, buf2); |
7266 | if (po->flags & OPF_FSHIFT) |
7267 | fprintf(fout, " f_stp++;"); |
d4a985bd |
7268 | } |
7269 | else { |
fe18df39 |
7270 | if (po->flags & OPF_FSHIFT) { |
7271 | // note: assumes only 2 regs handled |
7272 | if (!dead_dst) |
7273 | fprintf(fout, " f_st0 = f_st1 %c f_st0;", j); |
7274 | else |
7275 | fprintf(fout, " f_st0 = f_st1;"); |
7276 | } |
7277 | else if (!dead_dst) |
7278 | fprintf(fout, " %s %c= %s;", buf1, j, buf2); |
d4a985bd |
7279 | } |
fe18df39 |
7280 | no_output = (dead_dst && !(po->flags & OPF_FSHIFT)); |
d4a985bd |
7281 | break; |
7282 | |
7283 | case OP_FDIVR: |
7284 | case OP_FSUBR: |
fe18df39 |
7285 | out_dst_opr_float(buf1, sizeof(buf1), po, &po->operand[0], |
7286 | need_float_stack); |
7287 | out_src_opr_float(buf2, sizeof(buf2), po, &po->operand[1], |
7288 | need_float_stack); |
7289 | out_src_opr_float(buf3, sizeof(buf3), po, &po->operand[0], |
7290 | need_float_stack); |
7291 | dead_dst = (po->flags & OPF_FPOP) |
7292 | && po->operand[0].type == OPT_REG |
7293 | && po->operand[0].reg == xST0; |
7294 | j = po->op == OP_FDIVR ? '/' : '-'; |
7295 | if (need_float_stack) { |
7296 | if (!dead_dst) |
7297 | fprintf(fout, " %s = %s %c %s;", buf1, buf2, j, buf3); |
7298 | if (po->flags & OPF_FSHIFT) |
7299 | fprintf(fout, " f_stp++;"); |
7300 | } |
7301 | else { |
7302 | if (po->flags & OPF_FSHIFT) { |
7303 | if (!dead_dst) |
7304 | fprintf(fout, " f_st0 = f_st0 %c f_st1;", j); |
7305 | else |
7306 | fprintf(fout, " f_st0 = f_st1;"); |
7307 | } |
7308 | else if (!dead_dst) |
7309 | fprintf(fout, " %s = %s %c %s;", buf1, buf2, j, buf3); |
7310 | } |
7311 | no_output = (dead_dst && !(po->flags & OPF_FSHIFT)); |
d4a985bd |
7312 | break; |
7313 | |
7314 | case OP_FIADD: |
7315 | case OP_FIDIV: |
7316 | case OP_FIMUL: |
7317 | case OP_FISUB: |
7318 | switch (po->op) { |
7319 | case OP_FIADD: j = '+'; break; |
7320 | case OP_FIDIV: j = '/'; break; |
7321 | case OP_FIMUL: j = '*'; break; |
7322 | case OP_FISUB: j = '-'; break; |
7323 | default: j = 'x'; break; |
7324 | } |
fe18df39 |
7325 | fprintf(fout, " %s %c= (%s)%s;", float_st0, |
7326 | j, float_type, |
d4a985bd |
7327 | out_src_opr(buf1, sizeof(buf1), po, &po->operand[0], |
7328 | lmod_cast(po, po->operand[0].lmod, 1), 0)); |
7329 | break; |
7330 | |
7331 | case OP_FIDIVR: |
7332 | case OP_FISUBR: |
fe18df39 |
7333 | fprintf(fout, " %s = %s %c %s;", float_st0, |
7334 | out_src_opr_float(buf2, sizeof(buf2), po, &po->operand[1], |
7335 | need_float_stack), |
7336 | po->op == OP_FIDIVR ? '/' : '-', float_st0); |
7337 | break; |
7338 | |
16057ce1 |
7339 | case OP_FCOM: { |
7340 | int mask, z_check; |
7341 | ferr_assert(po, po->datap != NULL); |
7342 | mask = (long)po->datap & 0xffff; |
7343 | z_check = ((long)po->datap >> 16) & 1; |
7344 | out_src_opr_float(buf1, sizeof(buf1), po, &po->operand[0], |
7345 | need_float_stack); |
7346 | if (mask == 0x0100) { // C0 -> < |
7347 | fprintf(fout, " f_sw = %s < %s ? 0x0100 : 0;", |
7348 | float_st0, buf1); |
7349 | } |
7350 | else if (mask == 0x4000) { // C3 -> = |
7351 | fprintf(fout, " f_sw = %s == %s ? 0x4000 : 0;", |
7352 | float_st0, buf1); |
7353 | } |
7354 | else if (mask == 0x4100) { // C3, C0 |
7355 | if (z_check) { |
7356 | fprintf(fout, " f_sw = %s <= %s ? 0x4100 : 0;", |
7357 | float_st0, buf1); |
7358 | strcat(g_comment, " z_chk_det"); |
7359 | } |
7360 | else { |
7361 | fprintf(fout, " f_sw = %s == %s ? 0x4000 : " |
7362 | "(%s < %s ? 0x0100 : 0);", |
7363 | float_st0, buf1, float_st0, buf1); |
7364 | } |
7365 | } |
7366 | else |
7367 | ferr(po, "unhandled sw mask: %x\n", mask); |
7368 | if (po->flags & OPF_FSHIFT) { |
7369 | if (need_float_stack) |
7370 | fprintf(fout, " f_stp++;"); |
7371 | else |
7372 | fprintf(fout, " f_st0 = f_st1;"); |
7373 | } |
7374 | break; |
7375 | } |
7376 | |
7377 | case OP_FNSTSW: |
7378 | fprintf(fout, " %s = f_sw;", |
7379 | out_dst_opr(buf1, sizeof(buf1), po, &po->operand[0])); |
7380 | break; |
7381 | |
fe18df39 |
7382 | case OP_FCHS: |
7383 | fprintf(fout, " %s = -%s;", float_st0, float_st0); |
d4a985bd |
7384 | break; |
7385 | |
497a6d6b |
7386 | case OP_FCOS: |
fe18df39 |
7387 | fprintf(fout, " %s = cos%s(%s);", float_st0, |
7388 | need_double ? "" : "f", float_st0); |
497a6d6b |
7389 | break; |
7390 | |
7391 | case OP_FPATAN: |
fe18df39 |
7392 | if (need_float_stack) { |
7393 | fprintf(fout, " %s = atan%s(%s / %s);", float_st1, |
7394 | need_double ? "" : "f", float_st1, float_st0); |
7395 | fprintf(fout, " f_stp++;"); |
7396 | } |
7397 | else { |
7398 | fprintf(fout, " f_st0 = atan%s(f_st1 / f_st0);", |
7399 | need_double ? "" : "f"); |
7400 | } |
7401 | break; |
7402 | |
7403 | case OP_FYL2X: |
7404 | if (need_float_stack) { |
7405 | fprintf(fout, " %s = %s * log2%s(%s);", float_st1, |
7406 | float_st1, need_double ? "" : "f", float_st0); |
7407 | fprintf(fout, " f_stp++;"); |
7408 | } |
7409 | else { |
7410 | fprintf(fout, " f_st0 = f_st1 * log2%s(f_st0);", |
7411 | need_double ? "" : "f"); |
7412 | } |
8c83cc48 |
7413 | strcat(g_comment, " fyl2x"); |
497a6d6b |
7414 | break; |
7415 | |
7416 | case OP_FSIN: |
fe18df39 |
7417 | fprintf(fout, " %s = sin%s(%s);", float_st0, |
7418 | need_double ? "" : "f", float_st0); |
497a6d6b |
7419 | break; |
7420 | |
7421 | case OP_FSQRT: |
fe18df39 |
7422 | fprintf(fout, " %s = sqrt%s(%s);", float_st0, |
7423 | need_double ? "" : "f", float_st0); |
7424 | break; |
7425 | |
7426 | case OP_FXCH: |
7427 | dead_dst = po->operand[0].type == OPT_REG |
7428 | && po->operand[0].reg == xST0; |
7429 | if (!dead_dst) { |
7430 | out_src_opr_float(buf1, sizeof(buf1), po, &po->operand[0], |
7431 | need_float_stack); |
7432 | fprintf(fout, " { %s t = %s; %s = %s; %s = t; }", float_type, |
7433 | float_st0, float_st0, buf1, buf1); |
7434 | strcat(g_comment, " fxch"); |
7435 | } |
7436 | else |
7437 | no_output = 1; |
497a6d6b |
7438 | break; |
7439 | |
d4a985bd |
7440 | case OPP_FTOL: |
7441 | ferr_assert(po, po->flags & OPF_32BIT); |
fe18df39 |
7442 | fprintf(fout, " eax = (s32)%s;", float_st0); |
7443 | if (po->flags & OPF_FSHIFT) { |
7444 | if (need_float_stack) |
7445 | fprintf(fout, " f_stp++;"); |
7446 | else |
7447 | fprintf(fout, " f_st0 = f_st1;"); |
7448 | } |
d4a985bd |
7449 | strcat(g_comment, " ftol"); |
7450 | break; |
7451 | |
8c83cc48 |
7452 | case OPP_CIPOW: |
7453 | if (need_float_stack) { |
7454 | fprintf(fout, " %s = pow%s(%s, %s);", float_st1, |
7455 | need_double ? "" : "f", float_st1, float_st0); |
7456 | fprintf(fout, " f_stp++;"); |
7457 | } |
7458 | else { |
7459 | fprintf(fout, " f_st0 = pow%s(f_st1, f_st0);", |
7460 | need_double ? "" : "f"); |
7461 | } |
7462 | strcat(g_comment, " CIpow"); |
7463 | break; |
7464 | |
11437ea1 |
7465 | case OPP_ABORT: |
7466 | fprintf(fout, " do_skip_code_abort();"); |
7467 | break; |
7468 | |
90307a99 |
7469 | // mmx |
7470 | case OP_EMMS: |
11437ea1 |
7471 | fprintf(fout, " do_emms();"); |
90307a99 |
7472 | break; |
7473 | |
91977a1c |
7474 | default: |
7475 | no_output = 1; |
69a3cdfc |
7476 | ferr(po, "unhandled op type %d, flags %x\n", |
7477 | po->op, po->flags); |
91977a1c |
7478 | break; |
7479 | } |
7480 | |
7481 | if (g_comment[0] != 0) { |
ddaf8bd7 |
7482 | char *p = g_comment; |
7483 | while (my_isblank(*p)) |
7484 | p++; |
7485 | fprintf(fout, " // %s", p); |
91977a1c |
7486 | g_comment[0] = 0; |
7487 | no_output = 0; |
7488 | } |
7489 | if (!no_output) |
7490 | fprintf(fout, "\n"); |
5101a5f9 |
7491 | |
2b43685d |
7492 | // some sanity checking |
591721d7 |
7493 | if (po->flags & OPF_REP) { |
7494 | if (po->op != OP_STOS && po->op != OP_MOVS |
7495 | && po->op != OP_CMPS && po->op != OP_SCAS) |
7496 | ferr(po, "unexpected rep\n"); |
7497 | if (!(po->flags & (OPF_REPZ|OPF_REPNZ)) |
7498 | && (po->op == OP_CMPS || po->op == OP_SCAS)) |
7499 | ferr(po, "cmps/scas with plain rep\n"); |
7500 | } |
7501 | if ((po->flags & (OPF_REPZ|OPF_REPNZ)) |
7502 | && po->op != OP_CMPS && po->op != OP_SCAS) |
2b43685d |
7503 | ferr(po, "unexpected repz/repnz\n"); |
7504 | |
940e8e66 |
7505 | if (pfomask != 0) |
7ba45c34 |
7506 | ferr(po, "missed flag calc, pfomask=%x\n", pfomask); |
940e8e66 |
7507 | |
5101a5f9 |
7508 | // see is delayed flag stuff is still valid |
7509 | if (delayed_flag_op != NULL && delayed_flag_op != po) { |
89ff3147 |
7510 | if (is_any_opr_modified(delayed_flag_op, po, 0)) |
5101a5f9 |
7511 | delayed_flag_op = NULL; |
7512 | } |
7513 | |
7514 | if (last_arith_dst != NULL && last_arith_dst != &po->operand[0]) { |
7515 | if (is_opr_modified(last_arith_dst, po)) |
7516 | last_arith_dst = NULL; |
7517 | } |
3ebea2cf |
7518 | |
7519 | label_pending = 0; |
91977a1c |
7520 | } |
7521 | |
a2c1d768 |
7522 | if (g_stack_fsz && !g_stack_frame_used) |
7523 | fprintf(fout, " (void)sf;\n"); |
7524 | |
91977a1c |
7525 | fprintf(fout, "}\n\n"); |
7526 | |
9af2d373 |
7527 | gen_x_cleanup(opcnt); |
7528 | } |
7529 | |
7530 | static void gen_x_cleanup(int opcnt) |
7531 | { |
7532 | int i; |
7533 | |
91977a1c |
7534 | for (i = 0; i < opcnt; i++) { |
4c45fa73 |
7535 | struct label_ref *lr, *lr_del; |
7536 | |
7537 | lr = g_label_refs[i].next; |
7538 | while (lr != NULL) { |
7539 | lr_del = lr; |
7540 | lr = lr->next; |
7541 | free(lr_del); |
7542 | } |
7543 | g_label_refs[i].i = -1; |
7544 | g_label_refs[i].next = NULL; |
7545 | |
91977a1c |
7546 | if (ops[i].op == OP_CALL) { |
092f64e1 |
7547 | if (ops[i].pp) |
7548 | proto_release(ops[i].pp); |
91977a1c |
7549 | } |
7550 | } |
bd96f656 |
7551 | g_func_pp = NULL; |
91977a1c |
7552 | } |
c36e914d |
7553 | |
92d715b6 |
7554 | struct func_proto_dep; |
7555 | |
7556 | struct func_prototype { |
7557 | char name[NAMELEN]; |
7558 | int id; |
7559 | int argc_stack; |
7560 | int regmask_dep; |
91ca764a |
7561 | int has_ret:3; // -1, 0, 1: unresolved, no, yes |
92d715b6 |
7562 | unsigned int dep_resolved:1; |
7563 | unsigned int is_stdcall:1; |
7564 | struct func_proto_dep *dep_func; |
7565 | int dep_func_cnt; |
91ca764a |
7566 | const struct parsed_proto *pp; // seed pp, if any |
92d715b6 |
7567 | }; |
7568 | |
7569 | struct func_proto_dep { |
7570 | char *name; |
7571 | struct func_prototype *proto; |
7572 | int regmask_live; // .. at the time of call |
7573 | unsigned int ret_dep:1; // return from this is caller's return |
7574 | }; |
7575 | |
7576 | static struct func_prototype *hg_fp; |
7577 | static int hg_fp_cnt; |
7578 | |
5fa1256f |
7579 | static struct scanned_var { |
7580 | char name[NAMELEN]; |
7581 | enum opr_lenmod lmod; |
7582 | unsigned int is_seeded:1; |
61e29183 |
7583 | unsigned int is_c_str:1; |
c0de9015 |
7584 | const struct parsed_proto *pp; // seed pp, if any |
5fa1256f |
7585 | } *hg_vars; |
7586 | static int hg_var_cnt; |
7587 | |
8c999988 |
7588 | static char **hg_refs; |
7589 | static int hg_ref_cnt; |
7590 | |
9af2d373 |
7591 | static void output_hdr_fp(FILE *fout, const struct func_prototype *fp, |
7592 | int count); |
7593 | |
8c999988 |
7594 | static struct func_prototype *hg_fp_add(const char *funcn) |
ebc4dc43 |
7595 | { |
7596 | struct func_prototype *fp; |
7597 | |
7598 | if ((hg_fp_cnt & 0xff) == 0) { |
7599 | hg_fp = realloc(hg_fp, sizeof(hg_fp[0]) * (hg_fp_cnt + 0x100)); |
7600 | my_assert_not(hg_fp, NULL); |
7601 | memset(hg_fp + hg_fp_cnt, 0, sizeof(hg_fp[0]) * 0x100); |
7602 | } |
7603 | |
7604 | fp = &hg_fp[hg_fp_cnt]; |
7605 | snprintf(fp->name, sizeof(fp->name), "%s", funcn); |
7606 | fp->id = hg_fp_cnt; |
7607 | fp->argc_stack = -1; |
7608 | hg_fp_cnt++; |
7609 | |
7610 | return fp; |
7611 | } |
7612 | |
92d715b6 |
7613 | static struct func_proto_dep *hg_fp_find_dep(struct func_prototype *fp, |
7614 | const char *name) |
7615 | { |
7616 | int i; |
7617 | |
7618 | for (i = 0; i < fp->dep_func_cnt; i++) |
7619 | if (IS(fp->dep_func[i].name, name)) |
7620 | return &fp->dep_func[i]; |
7621 | |
7622 | return NULL; |
7623 | } |
7624 | |
7625 | static void hg_fp_add_dep(struct func_prototype *fp, const char *name) |
7626 | { |
7627 | // is it a dupe? |
7628 | if (hg_fp_find_dep(fp, name)) |
7629 | return; |
7630 | |
7631 | if ((fp->dep_func_cnt & 0xff) == 0) { |
7632 | fp->dep_func = realloc(fp->dep_func, |
7633 | sizeof(fp->dep_func[0]) * (fp->dep_func_cnt + 0x100)); |
7634 | my_assert_not(fp->dep_func, NULL); |
7635 | memset(&fp->dep_func[fp->dep_func_cnt], 0, |
7636 | sizeof(fp->dep_func[0]) * 0x100); |
7637 | } |
7638 | fp->dep_func[fp->dep_func_cnt].name = strdup(name); |
7639 | fp->dep_func_cnt++; |
7640 | } |
7641 | |
7642 | static int hg_fp_cmp_name(const void *p1_, const void *p2_) |
7643 | { |
7644 | const struct func_prototype *p1 = p1_, *p2 = p2_; |
7645 | return strcmp(p1->name, p2->name); |
7646 | } |
7647 | |
7648 | #if 0 |
7649 | static int hg_fp_cmp_id(const void *p1_, const void *p2_) |
7650 | { |
7651 | const struct func_prototype *p1 = p1_, *p2 = p2_; |
7652 | return p1->id - p2->id; |
7653 | } |
7654 | #endif |
7655 | |
8c999988 |
7656 | static void hg_ref_add(const char *name) |
7657 | { |
7658 | if ((hg_ref_cnt & 0xff) == 0) { |
7659 | hg_refs = realloc(hg_refs, sizeof(hg_refs[0]) * (hg_ref_cnt + 0x100)); |
7660 | my_assert_not(hg_refs, NULL); |
7661 | memset(hg_refs + hg_ref_cnt, 0, sizeof(hg_refs[0]) * 0x100); |
7662 | } |
7663 | |
7664 | hg_refs[hg_ref_cnt] = strdup(name); |
7665 | my_assert_not(hg_refs[hg_ref_cnt], NULL); |
7666 | hg_ref_cnt++; |
7667 | } |
7668 | |
91ca764a |
7669 | // recursive register dep pass |
7670 | // - track saved regs (part 2) |
7671 | // - try to figure out arg-regs |
7672 | // - calculate reg deps |
7673 | static void gen_hdr_dep_pass(int i, int opcnt, unsigned char *cbits, |
7674 | struct func_prototype *fp, int regmask_save, int regmask_dst, |
7675 | int *regmask_dep, int *has_ret) |
7676 | { |
7677 | struct func_proto_dep *dep; |
7678 | struct parsed_op *po; |
7679 | int from_caller = 0; |
91ca764a |
7680 | int j, l; |
7681 | int reg; |
7682 | int ret; |
7683 | |
7684 | for (; i < opcnt; i++) |
7685 | { |
7686 | if (cbits[i >> 3] & (1 << (i & 7))) |
7687 | return; |
7688 | cbits[i >> 3] |= (1 << (i & 7)); |
7689 | |
7690 | po = &ops[i]; |
7691 | |
7692 | if ((po->flags & OPF_JMP) && po->op != OP_CALL) { |
04abc5d6 |
7693 | if (po->flags & OPF_RMD) |
7694 | continue; |
7695 | |
91ca764a |
7696 | if (po->btj != NULL) { |
7697 | // jumptable |
7698 | for (j = 0; j < po->btj->count; j++) { |
db63af51 |
7699 | check_i(po, po->btj->d[j].bt_i); |
91ca764a |
7700 | gen_hdr_dep_pass(po->btj->d[j].bt_i, opcnt, cbits, fp, |
7701 | regmask_save, regmask_dst, regmask_dep, has_ret); |
7702 | } |
7703 | return; |
7704 | } |
7705 | |
db63af51 |
7706 | check_i(po, po->bt_i); |
91ca764a |
7707 | if (po->flags & OPF_CJMP) { |
7708 | gen_hdr_dep_pass(po->bt_i, opcnt, cbits, fp, |
7709 | regmask_save, regmask_dst, regmask_dep, has_ret); |
7710 | } |
7711 | else { |
7712 | i = po->bt_i - 1; |
7713 | } |
7714 | continue; |
7715 | } |
7716 | |
7717 | if (po->flags & OPF_FARG) |
7718 | /* (just calculate register deps) */; |
7719 | else if (po->op == OP_PUSH && po->operand[0].type == OPT_REG) |
7720 | { |
7721 | reg = po->operand[0].reg; |
b2bd20c0 |
7722 | ferr_assert(po, reg >= 0); |
91ca764a |
7723 | |
7724 | if (po->flags & OPF_RSAVE) { |
7725 | regmask_save |= 1 << reg; |
7726 | continue; |
7727 | } |
7728 | if (po->flags & OPF_DONE) |
7729 | continue; |
7730 | |
93b5bd18 |
7731 | ret = scan_for_pop(i + 1, opcnt, i + opcnt * 2, reg, 0, 0, 0); |
91ca764a |
7732 | if (ret == 1) { |
7733 | regmask_save |= 1 << reg; |
7734 | po->flags |= OPF_RMD; |
93b5bd18 |
7735 | scan_for_pop(i + 1, opcnt, i + opcnt * 3, reg, 0, 0, OPF_RMD); |
91ca764a |
7736 | continue; |
7737 | } |
7738 | } |
7739 | else if (po->flags & OPF_RMD) |
7740 | continue; |
7741 | else if (po->op == OP_CALL) { |
7742 | po->regmask_dst |= 1 << xAX; |
7743 | |
7744 | dep = hg_fp_find_dep(fp, po->operand[0].name); |
7745 | if (dep != NULL) |
7746 | dep->regmask_live = regmask_save | regmask_dst; |
7747 | } |
7748 | else if (po->op == OP_RET) { |
7749 | if (po->operand_cnt > 0) { |
7750 | fp->is_stdcall = 1; |
7751 | if (fp->argc_stack >= 0 |
7752 | && fp->argc_stack != po->operand[0].val / 4) |
7753 | ferr(po, "ret mismatch? (%d)\n", fp->argc_stack * 4); |
7754 | fp->argc_stack = po->operand[0].val / 4; |
7755 | } |
7756 | } |
7757 | |
ebc4dc43 |
7758 | // if has_ret is 0, there is uninitialized eax path, |
7759 | // which means it's most likely void func |
91ca764a |
7760 | if (*has_ret != 0 && (po->flags & OPF_TAIL)) { |
7761 | if (po->op == OP_CALL) { |
7762 | j = i; |
7763 | ret = 1; |
7764 | } |
7765 | else { |
b2bd20c0 |
7766 | struct parsed_opr opr = OPR_INIT(OPT_REG, OPLM_DWORD, xAX); |
91ca764a |
7767 | j = -1; |
7768 | from_caller = 0; |
7769 | ret = resolve_origin(i, &opr, i + opcnt * 4, &j, &from_caller); |
7770 | } |
7771 | |
ebc4dc43 |
7772 | if (ret != 1 && from_caller) { |
91ca764a |
7773 | // unresolved eax - probably void func |
7774 | *has_ret = 0; |
7775 | } |
7776 | else { |
ebc4dc43 |
7777 | if (j >= 0 && ops[j].op == OP_CALL) { |
7778 | dep = hg_fp_find_dep(fp, ops[j].operand[0].name); |
91ca764a |
7779 | if (dep != NULL) |
7780 | dep->ret_dep = 1; |
7781 | else |
7782 | *has_ret = 1; |
7783 | } |
7784 | else |
7785 | *has_ret = 1; |
7786 | } |
7787 | } |
7788 | |
7789 | l = regmask_save | regmask_dst; |
7790 | if (g_bp_frame && !(po->flags & OPF_EBP_S)) |
7791 | l |= 1 << xBP; |
7792 | |
7793 | l = po->regmask_src & ~l; |
7794 | #if 0 |
7795 | if (l) |
7796 | fnote(po, "dep |= %04x, dst %04x, save %04x (f %x)\n", |
7797 | l, regmask_dst, regmask_save, po->flags); |
7798 | #endif |
7799 | *regmask_dep |= l; |
7800 | regmask_dst |= po->regmask_dst; |
7801 | |
7802 | if (po->flags & OPF_TAIL) |
7803 | return; |
7804 | } |
7805 | } |
7806 | |
92d715b6 |
7807 | static void gen_hdr(const char *funcn, int opcnt) |
7808 | { |
91ca764a |
7809 | unsigned char cbits[MAX_OPS / 8]; |
ebc4dc43 |
7810 | const struct parsed_proto *pp_c; |
9af2d373 |
7811 | struct parsed_proto *pp; |
92d715b6 |
7812 | struct func_prototype *fp; |
92d715b6 |
7813 | struct parsed_op *po; |
26677139 |
7814 | int regmask_dummy = 0; |
91ca764a |
7815 | int regmask_dep; |
92d715b6 |
7816 | int max_bp_offset = 0; |
91ca764a |
7817 | int has_ret; |
bfacdc83 |
7818 | int i, j, l; |
7819 | int ret; |
92d715b6 |
7820 | |
ebc4dc43 |
7821 | pp_c = proto_parse(g_fhdr, funcn, 1); |
7822 | if (pp_c != NULL) |
7823 | // already in seed, will add to hg_fp later |
9af2d373 |
7824 | return; |
ebc4dc43 |
7825 | |
7826 | fp = hg_fp_add(funcn); |
9af2d373 |
7827 | |
7828 | g_bp_frame = g_sp_frame = g_stack_fsz = 0; |
7829 | g_stack_frame_used = 0; |
7830 | |
92d715b6 |
7831 | // pass1: |
66bdb2b0 |
7832 | // - resolve all branches |
7833 | // - parse calls with labels |
7834 | resolve_branches_parse_calls(opcnt); |
7835 | |
7836 | // pass2: |
9af2d373 |
7837 | // - handle ebp/esp frame, remove ops related to it |
7838 | scan_prologue_epilogue(opcnt); |
7839 | |
66bdb2b0 |
7840 | // pass3: |
7841 | // - remove dead labels |
92d715b6 |
7842 | // - collect calls |
92d715b6 |
7843 | for (i = 0; i < opcnt; i++) |
7844 | { |
66bdb2b0 |
7845 | if (g_labels[i] != NULL && g_label_refs[i].i == -1) { |
7846 | free(g_labels[i]); |
7847 | g_labels[i] = NULL; |
7848 | } |
92d715b6 |
7849 | |
66bdb2b0 |
7850 | po = &ops[i]; |
5e49b270 |
7851 | if (po->flags & (OPF_RMD|OPF_DONE)) |
92d715b6 |
7852 | continue; |
7853 | |
7854 | if (po->op == OP_CALL) { |
66bdb2b0 |
7855 | if (po->operand[0].type == OPT_LABEL) |
7856 | hg_fp_add_dep(fp, opr_name(po, 0)); |
7857 | else if (po->pp != NULL) |
7858 | hg_fp_add_dep(fp, po->pp->name); |
92d715b6 |
7859 | } |
92d715b6 |
7860 | } |
7861 | |
66bdb2b0 |
7862 | // pass4: |
92d715b6 |
7863 | // - remove dead labels |
9af2d373 |
7864 | // - handle push <const>/pop pairs |
92d715b6 |
7865 | for (i = 0; i < opcnt; i++) |
7866 | { |
d7857c3a |
7867 | if (g_labels[i] != NULL && g_label_refs[i].i == -1) { |
7868 | free(g_labels[i]); |
7869 | g_labels[i] = NULL; |
7870 | } |
9af2d373 |
7871 | |
91ca764a |
7872 | po = &ops[i]; |
7873 | if (po->flags & (OPF_RMD|OPF_DONE)) |
7874 | continue; |
7875 | |
7876 | if (po->op == OP_PUSH && po->operand[0].type == OPT_CONST) |
e83ea7ed |
7877 | scan_for_pop_const(i, opcnt, i + opcnt * 13); |
91ca764a |
7878 | } |
7879 | |
66bdb2b0 |
7880 | // pass5: |
91ca764a |
7881 | // - process trivial calls |
7882 | for (i = 0; i < opcnt; i++) |
7883 | { |
9af2d373 |
7884 | po = &ops[i]; |
5e49b270 |
7885 | if (po->flags & (OPF_RMD|OPF_DONE)) |
9af2d373 |
7886 | continue; |
7887 | |
26677139 |
7888 | if (po->op == OP_CALL) |
7889 | { |
7890 | pp = process_call_early(i, opcnt, &j); |
7891 | if (pp != NULL) { |
7892 | if (!(po->flags & OPF_ATAIL)) |
7893 | // since we know the args, try to collect them |
30620174 |
7894 | if (collect_call_args_early(i, pp, NULL, NULL) != 0) |
26677139 |
7895 | pp = NULL; |
7896 | } |
7897 | |
7898 | if (pp != NULL) { |
7899 | if (j >= 0) { |
7900 | // commit esp adjust |
5e49b270 |
7901 | if (ops[j].op != OP_POP) |
7902 | patch_esp_adjust(&ops[j], pp->argc_stack * 4); |
bfacdc83 |
7903 | else { |
7904 | for (l = 0; l < pp->argc_stack; l++) |
b2bd20c0 |
7905 | ops[j + l].flags |= OPF_DONE | OPF_RMD | OPF_NOREGS; |
bfacdc83 |
7906 | } |
26677139 |
7907 | } |
7908 | |
7909 | po->flags |= OPF_DONE; |
7910 | } |
7911 | } |
26677139 |
7912 | } |
7913 | |
66bdb2b0 |
7914 | // pass6: |
5e49b270 |
7915 | // - track saved regs (simple) |
26677139 |
7916 | // - process calls |
7917 | for (i = 0; i < opcnt; i++) |
7918 | { |
7919 | po = &ops[i]; |
5e49b270 |
7920 | if (po->flags & (OPF_RMD|OPF_DONE)) |
26677139 |
7921 | continue; |
7922 | |
e83ea7ed |
7923 | if (po->op == OP_PUSH && po->operand[0].type == OPT_REG |
7924 | && po->operand[0].reg != xCX) |
5e49b270 |
7925 | { |
e83ea7ed |
7926 | ret = scan_for_pop_ret(i + 1, opcnt, po->operand[0].reg, 0); |
b2bd20c0 |
7927 | if (ret == 1) { |
91ca764a |
7928 | // regmask_save |= 1 << po->operand[0].reg; // do it later |
7929 | po->flags |= OPF_RSAVE | OPF_RMD | OPF_DONE; |
e83ea7ed |
7930 | scan_for_pop_ret(i + 1, opcnt, po->operand[0].reg, OPF_RMD); |
5e49b270 |
7931 | } |
7932 | } |
e83ea7ed |
7933 | else if (po->op == OP_CALL) |
26677139 |
7934 | { |
9af2d373 |
7935 | pp = process_call(i, opcnt); |
7936 | |
7937 | if (!pp->is_unresolved && !(po->flags & OPF_ATAIL)) { |
9af2d373 |
7938 | // since we know the args, collect them |
8c83cc48 |
7939 | ret = collect_call_args(po, i, pp, ®mask_dummy, |
7940 | i + opcnt * 1); |
9af2d373 |
7941 | } |
7942 | } |
92d715b6 |
7943 | } |
7944 | |
66bdb2b0 |
7945 | // pass7 |
91ca764a |
7946 | memset(cbits, 0, sizeof(cbits)); |
7947 | regmask_dep = 0; |
7948 | has_ret = -1; |
7949 | |
7950 | gen_hdr_dep_pass(0, opcnt, cbits, fp, 0, 0, ®mask_dep, &has_ret); |
7951 | |
7952 | // find unreachable code - must be fixed in IDA |
92d715b6 |
7953 | for (i = 0; i < opcnt; i++) |
7954 | { |
91ca764a |
7955 | if (cbits[i >> 3] & (1 << (i & 7))) |
9af2d373 |
7956 | continue; |
92d715b6 |
7957 | |
04abc5d6 |
7958 | if (g_labels[i] == NULL && i > 0 && ops[i - 1].op == OP_CALL |
7959 | && ops[i - 1].pp != NULL && ops[i - 1].pp->is_osinc) |
7960 | { |
7961 | // the compiler sometimes still generates code after |
7962 | // noreturn OS functions |
7963 | break; |
7964 | } |
91ca764a |
7965 | if (ops[i].op != OP_NOP) |
7966 | ferr(&ops[i], "unreachable code\n"); |
92d715b6 |
7967 | } |
7968 | |
9af2d373 |
7969 | for (i = 0; i < g_eqcnt; i++) { |
92d715b6 |
7970 | if (g_eqs[i].offset > max_bp_offset && g_eqs[i].offset < 4*32) |
7971 | max_bp_offset = g_eqs[i].offset; |
9af2d373 |
7972 | } |
92d715b6 |
7973 | |
9af2d373 |
7974 | if (fp->argc_stack < 0) { |
92d715b6 |
7975 | max_bp_offset = (max_bp_offset + 3) & ~3; |
9af2d373 |
7976 | fp->argc_stack = max_bp_offset / 4; |
7977 | if ((g_ida_func_attr & IDAFA_BP_FRAME) && fp->argc_stack > 0) |
92d715b6 |
7978 | fp->argc_stack--; |
7979 | } |
7980 | |
622eb2ef |
7981 | fp->regmask_dep = regmask_dep & ~((1 << xSP) | mxSTa); |
92d715b6 |
7982 | fp->has_ret = has_ret; |
91ca764a |
7983 | #if 0 |
7984 | printf("// has_ret %d, regmask_dep %x\n", |
7985 | fp->has_ret, fp->regmask_dep); |
7986 | output_hdr_fp(stdout, fp, 1); |
ebc4dc43 |
7987 | if (IS(funcn, "sub_10007F72")) exit(1); |
91ca764a |
7988 | #endif |
9af2d373 |
7989 | |
7990 | gen_x_cleanup(opcnt); |
92d715b6 |
7991 | } |
7992 | |
7993 | static void hg_fp_resolve_deps(struct func_prototype *fp) |
7994 | { |
7995 | struct func_prototype fp_s; |
91ca764a |
7996 | int dep; |
92d715b6 |
7997 | int i; |
7998 | |
7999 | // this thing is recursive, so mark first.. |
8000 | fp->dep_resolved = 1; |
8001 | |
8002 | for (i = 0; i < fp->dep_func_cnt; i++) { |
8003 | strcpy(fp_s.name, fp->dep_func[i].name); |
8004 | fp->dep_func[i].proto = bsearch(&fp_s, hg_fp, hg_fp_cnt, |
8005 | sizeof(hg_fp[0]), hg_fp_cmp_name); |
8006 | if (fp->dep_func[i].proto != NULL) { |
8007 | if (!fp->dep_func[i].proto->dep_resolved) |
8008 | hg_fp_resolve_deps(fp->dep_func[i].proto); |
8009 | |
91ca764a |
8010 | dep = ~fp->dep_func[i].regmask_live |
8011 | & fp->dep_func[i].proto->regmask_dep; |
8012 | fp->regmask_dep |= dep; |
8013 | // printf("dep %s %s |= %x\n", fp->name, |
8014 | // fp->dep_func[i].name, dep); |
92d715b6 |
8015 | |
ebc4dc43 |
8016 | if (fp->has_ret == -1 && fp->dep_func[i].ret_dep) |
92d715b6 |
8017 | fp->has_ret = fp->dep_func[i].proto->has_ret; |
8018 | } |
8019 | } |
8020 | } |
8021 | |
8c999988 |
8022 | // make all thiscall/edx arg functions referenced from .data fastcall |
8023 | static void do_func_refs_from_data(void) |
8024 | { |
8025 | struct func_prototype *fp, fp_s; |
8026 | int i; |
8027 | |
8028 | for (i = 0; i < hg_ref_cnt; i++) { |
8029 | strcpy(fp_s.name, hg_refs[i]); |
8030 | fp = bsearch(&fp_s, hg_fp, hg_fp_cnt, |
8031 | sizeof(hg_fp[0]), hg_fp_cmp_name); |
8032 | if (fp == NULL) |
8033 | continue; |
8034 | |
8035 | if (fp->argc_stack != 0 && (fp->regmask_dep & (mxCX | mxDX))) |
8036 | fp->regmask_dep |= mxCX | mxDX; |
8037 | } |
8038 | } |
8039 | |
9af2d373 |
8040 | static void output_hdr_fp(FILE *fout, const struct func_prototype *fp, |
8041 | int count) |
92d715b6 |
8042 | { |
61e29183 |
8043 | const struct parsed_proto *pp; |
8044 | char *p, namebuf[NAMELEN]; |
8045 | const char *name; |
92d715b6 |
8046 | int regmask_dep; |
226e8df1 |
8047 | int argc_normal; |
9af2d373 |
8048 | int j, arg; |
92d715b6 |
8049 | |
9af2d373 |
8050 | for (; count > 0; count--, fp++) { |
92d715b6 |
8051 | if (fp->has_ret == -1) |
8052 | fprintf(fout, "// ret unresolved\n"); |
8053 | #if 0 |
8054 | fprintf(fout, "// dep:"); |
8055 | for (j = 0; j < fp->dep_func_cnt; j++) { |
8056 | fprintf(fout, " %s/", fp->dep_func[j].name); |
8057 | if (fp->dep_func[j].proto != NULL) |
8058 | fprintf(fout, "%04x/%d", fp->dep_func[j].proto->regmask_dep, |
8059 | fp->dep_func[j].proto->has_ret); |
8060 | } |
8061 | fprintf(fout, "\n"); |
8062 | #endif |
8063 | |
61e29183 |
8064 | p = strchr(fp->name, '@'); |
8065 | if (p != NULL) { |
8066 | memcpy(namebuf, fp->name, p - fp->name); |
8067 | namebuf[p - fp->name] = 0; |
8068 | name = namebuf; |
8069 | } |
8070 | else |
8071 | name = fp->name; |
8072 | if (name[0] == '_') |
8073 | name++; |
8074 | |
8075 | pp = proto_parse(g_fhdr, name, 1); |
8076 | if (pp != NULL && pp->is_include) |
8077 | continue; |
8078 | |
c0de9015 |
8079 | if (fp->pp != NULL) { |
4e81a3a2 |
8080 | // part of seed, output later |
8081 | continue; |
c0de9015 |
8082 | } |
8083 | |
92d715b6 |
8084 | regmask_dep = fp->regmask_dep; |
226e8df1 |
8085 | argc_normal = fp->argc_stack; |
92d715b6 |
8086 | |
91ca764a |
8087 | fprintf(fout, "%-5s", fp->pp ? fp->pp->ret_type.name : |
8088 | (fp->has_ret ? "int" : "void")); |
226e8df1 |
8089 | if (regmask_dep && (fp->is_stdcall || fp->argc_stack > 0) |
8090 | && (regmask_dep & ~mxCX) == 0) |
8091 | { |
8092 | fprintf(fout, "/*__thiscall*/ "); |
8093 | argc_normal++; |
8094 | regmask_dep = 0; |
8095 | } |
8096 | else if (regmask_dep && (fp->is_stdcall || fp->argc_stack == 0) |
8097 | && (regmask_dep & ~(mxCX | mxDX)) == 0) |
92d715b6 |
8098 | { |
9af2d373 |
8099 | fprintf(fout, " __fastcall "); |
226e8df1 |
8100 | if (!(regmask_dep & (1 << xDX)) && fp->argc_stack == 0) |
8101 | argc_normal = 1; |
92d715b6 |
8102 | else |
226e8df1 |
8103 | argc_normal += 2; |
92d715b6 |
8104 | regmask_dep = 0; |
8105 | } |
8106 | else if (regmask_dep && !fp->is_stdcall) { |
8107 | fprintf(fout, "/*__usercall*/ "); |
92d715b6 |
8108 | } |
8109 | else if (regmask_dep) { |
8110 | fprintf(fout, "/*__userpurge*/ "); |
92d715b6 |
8111 | } |
8112 | else if (fp->is_stdcall) |
9af2d373 |
8113 | fprintf(fout, " __stdcall "); |
92d715b6 |
8114 | else |
9af2d373 |
8115 | fprintf(fout, " __cdecl "); |
92d715b6 |
8116 | |
61e29183 |
8117 | fprintf(fout, "%s(", name); |
92d715b6 |
8118 | |
8119 | arg = 0; |
8120 | for (j = 0; j < xSP; j++) { |
8121 | if (regmask_dep & (1 << j)) { |
8122 | arg++; |
8123 | if (arg != 1) |
8124 | fprintf(fout, ", "); |
91ca764a |
8125 | if (fp->pp != NULL) |
8126 | fprintf(fout, "%s", fp->pp->arg[arg - 1].type.name); |
8127 | else |
8128 | fprintf(fout, "int"); |
8129 | fprintf(fout, " a%d/*<%s>*/", arg, regs_r32[j]); |
92d715b6 |
8130 | } |
8131 | } |
8132 | |
226e8df1 |
8133 | for (j = 0; j < argc_normal; j++) { |
92d715b6 |
8134 | arg++; |
8135 | if (arg != 1) |
8136 | fprintf(fout, ", "); |
91ca764a |
8137 | if (fp->pp != NULL) { |
8138 | fprintf(fout, "%s", fp->pp->arg[arg - 1].type.name); |
8139 | if (!fp->pp->arg[arg - 1].type.is_ptr) |
8140 | fprintf(fout, " "); |
8141 | } |
8142 | else |
8143 | fprintf(fout, "int "); |
8144 | fprintf(fout, "a%d", arg); |
92d715b6 |
8145 | } |
8146 | |
8147 | fprintf(fout, ");\n"); |
8148 | } |
8149 | } |
8150 | |
9af2d373 |
8151 | static void output_hdr(FILE *fout) |
8152 | { |
5fa1256f |
8153 | static const char *lmod_c_names[] = { |
8154 | [OPLM_UNSPEC] = "???", |
8155 | [OPLM_BYTE] = "uint8_t", |
8156 | [OPLM_WORD] = "uint16_t", |
8157 | [OPLM_DWORD] = "uint32_t", |
8158 | [OPLM_QWORD] = "uint64_t", |
8159 | }; |
8160 | const struct scanned_var *var; |
ebc4dc43 |
8161 | struct func_prototype *fp; |
c0de9015 |
8162 | char line[256] = { 0, }; |
ebc4dc43 |
8163 | char name[256]; |
9af2d373 |
8164 | int i; |
8165 | |
ebc4dc43 |
8166 | // add stuff from headers |
8167 | for (i = 0; i < pp_cache_size; i++) { |
8168 | if (pp_cache[i].is_cinc && !pp_cache[i].is_stdcall) |
8169 | snprintf(name, sizeof(name), "_%s", pp_cache[i].name); |
8170 | else |
8171 | snprintf(name, sizeof(name), "%s", pp_cache[i].name); |
8172 | fp = hg_fp_add(name); |
8173 | fp->pp = &pp_cache[i]; |
8174 | fp->argc_stack = fp->pp->argc_stack; |
8175 | fp->is_stdcall = fp->pp->is_stdcall; |
b2bd20c0 |
8176 | fp->regmask_dep = get_pp_arg_regmask_src(fp->pp); |
ebc4dc43 |
8177 | fp->has_ret = !IS(fp->pp->ret_type.name, "void"); |
8178 | } |
8179 | |
9af2d373 |
8180 | // resolve deps |
8181 | qsort(hg_fp, hg_fp_cnt, sizeof(hg_fp[0]), hg_fp_cmp_name); |
8182 | for (i = 0; i < hg_fp_cnt; i++) |
8183 | hg_fp_resolve_deps(&hg_fp[i]); |
8184 | |
8c999988 |
8185 | // adjust functions referenced from data segment |
8186 | do_func_refs_from_data(); |
8187 | |
9af2d373 |
8188 | // note: messes up .proto ptr, don't use |
8189 | //qsort(hg_fp, hg_fp_cnt, sizeof(hg_fp[0]), hg_fp_cmp_id); |
8190 | |
5fa1256f |
8191 | // output variables |
8192 | for (i = 0; i < hg_var_cnt; i++) { |
8193 | var = &hg_vars[i]; |
8194 | |
4e81a3a2 |
8195 | if (var->pp != NULL) |
8196 | // part of seed |
8197 | continue; |
c0de9015 |
8198 | else if (var->is_c_str) |
61e29183 |
8199 | fprintf(fout, "extern %-8s %s[];", "char", var->name); |
8200 | else |
8201 | fprintf(fout, "extern %-8s %s;", |
8202 | lmod_c_names[var->lmod], var->name); |
5fa1256f |
8203 | |
8204 | if (var->is_seeded) |
8205 | fprintf(fout, " // seeded"); |
8206 | fprintf(fout, "\n"); |
8207 | } |
8208 | |
8209 | fprintf(fout, "\n"); |
8210 | |
8211 | // output function prototypes |
9af2d373 |
8212 | output_hdr_fp(fout, hg_fp, hg_fp_cnt); |
c0de9015 |
8213 | |
4e81a3a2 |
8214 | // seed passthrough |
8215 | fprintf(fout, "\n// - seed -\n"); |
c0de9015 |
8216 | |
8217 | rewind(g_fhdr); |
4e81a3a2 |
8218 | while (fgets(line, sizeof(line), g_fhdr)) |
8219 | fwrite(line, 1, strlen(line), fout); |
9af2d373 |
8220 | } |
8221 | |
61e29183 |
8222 | // '=' needs special treatment |
8223 | // also ' quote |
bfa4a6ee |
8224 | static char *next_word_s(char *w, size_t wsize, char *s) |
8225 | { |
61e29183 |
8226 | size_t i; |
bfa4a6ee |
8227 | |
61e29183 |
8228 | s = sskip(s); |
bfa4a6ee |
8229 | |
61e29183 |
8230 | i = 0; |
8c999988 |
8231 | if (*s == '\'' && s[1] != '\r' && s[1] != '\n') { |
61e29183 |
8232 | w[0] = s[0]; |
8233 | for (i = 1; i < wsize - 1; i++) { |
8234 | if (s[i] == 0) { |
8235 | printf("warning: missing closing quote: \"%s\"\n", s); |
8236 | break; |
8237 | } |
8238 | if (s[i] == '\'') |
8239 | break; |
8240 | w[i] = s[i]; |
8241 | } |
8242 | } |
bfa4a6ee |
8243 | |
61e29183 |
8244 | for (; i < wsize - 1; i++) { |
8245 | if (s[i] == 0 || my_isblank(s[i]) || (s[i] == '=' && i > 0)) |
8246 | break; |
8247 | w[i] = s[i]; |
8248 | } |
8249 | w[i] = 0; |
8250 | |
8251 | if (s[i] != 0 && !my_isblank(s[i]) && s[i] != '=') |
8252 | printf("warning: '%s' truncated\n", w); |
bfa4a6ee |
8253 | |
61e29183 |
8254 | return s + i; |
bfa4a6ee |
8255 | } |
8256 | |
4c20744d |
8257 | static int cmpstringp(const void *p1, const void *p2) |
8258 | { |
8259 | return strcmp(*(char * const *)p1, *(char * const *)p2); |
8260 | } |
8261 | |
8262 | static int is_xref_needed(char *p, char **rlist, int rlist_len) |
8263 | { |
8264 | char *p2; |
8265 | |
8266 | p = sskip(p); |
8267 | if (strstr(p, "...")) |
8268 | // unable to determine, assume needed |
8269 | return 1; |
8270 | |
8271 | if (*p == '.') // .text, .data, ... |
8272 | // ref from other data or non-function -> no |
8273 | return 0; |
8274 | |
8275 | p2 = strpbrk(p, "+:\r\n\x18"); |
8276 | if (p2 != NULL) |
8277 | *p2 = 0; |
8278 | if (bsearch(&p, rlist, rlist_len, sizeof(rlist[0]), cmpstringp)) |
8279 | // referenced from removed code |
8280 | return 0; |
8281 | |
8282 | return 1; |
8283 | } |
8284 | |
8c999988 |
8285 | static int ida_xrefs_show_need(FILE *fasm, char *p, |
4c20744d |
8286 | char **rlist, int rlist_len) |
8287 | { |
8288 | int found_need = 0; |
8289 | char line[256]; |
8290 | long pos; |
8291 | |
8292 | p = strrchr(p, ';'); |
8293 | if (p != NULL && *p == ';' && IS_START(p + 2, "DATA XREF: ")) { |
8294 | p += 13; |
8295 | if (is_xref_needed(p, rlist, rlist_len)) |
8296 | return 1; |
8297 | } |
8298 | |
8299 | pos = ftell(fasm); |
8300 | while (1) |
8301 | { |
8302 | if (!my_fgets(line, sizeof(line), fasm)) |
8303 | break; |
8304 | // non-first line is always indented |
8305 | if (!my_isblank(line[0])) |
8306 | break; |
8307 | |
8308 | // should be no content, just comment |
8309 | p = sskip(line); |
8310 | if (*p != ';') |
8311 | break; |
8312 | |
8313 | p = strrchr(p, ';'); |
8314 | p += 2; |
8315 | // it's printed once, but no harm to check again |
8316 | if (IS_START(p, "DATA XREF: ")) |
8317 | p += 11; |
8318 | |
8319 | if (is_xref_needed(p, rlist, rlist_len)) { |
8320 | found_need = 1; |
8321 | break; |
8322 | } |
8323 | } |
8324 | fseek(fasm, pos, SEEK_SET); |
8325 | return found_need; |
8326 | } |
8327 | |
8328 | static void scan_variables(FILE *fasm, char **rlist, int rlist_len) |
5fa1256f |
8329 | { |
5fa1256f |
8330 | struct scanned_var *var; |
8331 | char line[256] = { 0, }; |
8c999988 |
8332 | char words[4][256]; |
8333 | int no_identifier; |
5fa1256f |
8334 | char *p = NULL; |
8335 | int wordc; |
61e29183 |
8336 | int l; |
5fa1256f |
8337 | |
8338 | while (!feof(fasm)) |
8339 | { |
8340 | // skip to next data section |
8341 | while (my_fgets(line, sizeof(line), fasm)) |
8342 | { |
8343 | asmln++; |
8344 | |
8345 | p = sskip(line); |
8346 | if (*p == 0 || *p == ';') |
8347 | continue; |
8348 | |
8349 | p = sskip(next_word_s(words[0], sizeof(words[0]), p)); |
8350 | if (*p == 0 || *p == ';') |
8351 | continue; |
8352 | |
8353 | if (*p != 's' || !IS_START(p, "segment para public")) |
8354 | continue; |
8355 | |
8356 | break; |
8357 | } |
8358 | |
8359 | if (p == NULL || !IS_START(p, "segment para public")) |
8360 | break; |
8361 | p = sskip(p + 19); |
8362 | |
8363 | if (!IS_START(p, "'DATA'")) |
8364 | continue; |
8365 | |
8366 | // now process it |
8367 | while (my_fgets(line, sizeof(line), fasm)) |
8368 | { |
8369 | asmln++; |
8370 | |
8371 | p = line; |
8c999988 |
8372 | no_identifier = my_isblank(*p); |
5fa1256f |
8373 | |
8374 | p = sskip(p); |
8375 | if (*p == 0 || *p == ';') |
8376 | continue; |
8377 | |
8378 | for (wordc = 0; wordc < ARRAY_SIZE(words); wordc++) { |
8379 | words[wordc][0] = 0; |
8380 | p = sskip(next_word_s(words[wordc], sizeof(words[0]), p)); |
8381 | if (*p == 0 || *p == ';') { |
8382 | wordc++; |
8383 | break; |
8384 | } |
8385 | } |
8386 | |
8387 | if (wordc == 2 && IS(words[1], "ends")) |
8388 | break; |
61e29183 |
8389 | if (wordc < 2) |
8390 | continue; |
5fa1256f |
8391 | |
8c999988 |
8392 | if (no_identifier) { |
8393 | if (wordc >= 3 && IS(words[0], "dd") && IS(words[1], "offset")) |
8394 | hg_ref_add(words[2]); |
8395 | continue; |
8396 | } |
8397 | |
9ea60b8d |
8398 | if (IS_START(words[0], "__IMPORT_DESCRIPTOR_")) { |
8399 | // when this starts, we don't need anything from this section |
8400 | break; |
8401 | } |
8402 | |
4c20744d |
8403 | // check refs comment(s) |
8c999988 |
8404 | if (!ida_xrefs_show_need(fasm, p, rlist, rlist_len)) |
4c20744d |
8405 | continue; |
8406 | |
5fa1256f |
8407 | if ((hg_var_cnt & 0xff) == 0) { |
8408 | hg_vars = realloc(hg_vars, sizeof(hg_vars[0]) |
8409 | * (hg_var_cnt + 0x100)); |
8410 | my_assert_not(hg_vars, NULL); |
8411 | memset(hg_vars + hg_var_cnt, 0, sizeof(hg_vars[0]) * 0x100); |
8412 | } |
8413 | |
8414 | var = &hg_vars[hg_var_cnt++]; |
8415 | snprintf(var->name, sizeof(var->name), "%s", words[0]); |
8416 | |
8417 | // maybe already in seed header? |
c0de9015 |
8418 | var->pp = proto_parse(g_fhdr, var->name, 1); |
8419 | if (var->pp != NULL) { |
8420 | if (var->pp->is_fptr) { |
5fa1256f |
8421 | var->lmod = OPLM_DWORD; |
8422 | //var->is_ptr = 1; |
8423 | } |
c0de9015 |
8424 | else if (var->pp->is_func) |
8425 | aerr("func?\n"); |
8426 | else if (!guess_lmod_from_c_type(&var->lmod, &var->pp->type)) |
5fa1256f |
8427 | aerr("unhandled C type '%s' for '%s'\n", |
c0de9015 |
8428 | var->pp->type.name, var->name); |
5fa1256f |
8429 | |
8430 | var->is_seeded = 1; |
8431 | continue; |
8432 | } |
8433 | |
8c999988 |
8434 | if (IS(words[1], "dd")) { |
5fa1256f |
8435 | var->lmod = OPLM_DWORD; |
8c999988 |
8436 | if (wordc >= 4 && IS(words[2], "offset")) |
8437 | hg_ref_add(words[3]); |
8438 | } |
5fa1256f |
8439 | else if (IS(words[1], "dw")) |
8440 | var->lmod = OPLM_WORD; |
61e29183 |
8441 | else if (IS(words[1], "db")) { |
5fa1256f |
8442 | var->lmod = OPLM_BYTE; |
61e29183 |
8443 | if (wordc >= 3 && (l = strlen(words[2])) > 4) { |
8444 | if (words[2][0] == '\'' && IS(words[2] + l - 2, ",0")) |
8445 | var->is_c_str = 1; |
8446 | } |
8447 | } |
5fa1256f |
8448 | else if (IS(words[1], "dq")) |
8449 | var->lmod = OPLM_QWORD; |
8450 | //else if (IS(words[1], "dt")) |
8451 | else |
8452 | aerr("type '%s' not known\n", words[1]); |
8453 | } |
8454 | } |
8455 | |
8456 | rewind(fasm); |
8457 | asmln = 0; |
8458 | } |
8459 | |
8460 | static void set_label(int i, const char *name) |
8461 | { |
8462 | const char *p; |
8463 | int len; |
8464 | |
8465 | len = strlen(name); |
8466 | p = strchr(name, ':'); |
8467 | if (p != NULL) |
8468 | len = p - name; |
8469 | |
8470 | if (g_labels[i] != NULL && !IS_START(g_labels[i], "algn_")) |
8471 | aerr("dupe label '%s' vs '%s'?\n", name, g_labels[i]); |
8472 | g_labels[i] = realloc(g_labels[i], len + 1); |
8473 | my_assert_not(g_labels[i], NULL); |
8474 | memcpy(g_labels[i], name, len); |
8475 | g_labels[i][len] = 0; |
8476 | } |
8477 | |
e56ab892 |
8478 | struct chunk_item { |
8479 | char *name; |
8480 | long fptr; |
de50b98b |
8481 | int asmln; |
e56ab892 |
8482 | }; |
8483 | |
cdfaeed7 |
8484 | static struct chunk_item *func_chunks; |
8485 | static int func_chunk_cnt; |
8486 | static int func_chunk_alloc; |
8487 | |
8488 | static void add_func_chunk(FILE *fasm, const char *name, int line) |
8489 | { |
8490 | if (func_chunk_cnt >= func_chunk_alloc) { |
8491 | func_chunk_alloc *= 2; |
8492 | func_chunks = realloc(func_chunks, |
8493 | func_chunk_alloc * sizeof(func_chunks[0])); |
8494 | my_assert_not(func_chunks, NULL); |
8495 | } |
8496 | func_chunks[func_chunk_cnt].fptr = ftell(fasm); |
8497 | func_chunks[func_chunk_cnt].name = strdup(name); |
8498 | func_chunks[func_chunk_cnt].asmln = line; |
8499 | func_chunk_cnt++; |
8500 | } |
8501 | |
e56ab892 |
8502 | static int cmp_chunks(const void *p1, const void *p2) |
8503 | { |
8504 | const struct chunk_item *c1 = p1, *c2 = p2; |
8505 | return strcmp(c1->name, c2->name); |
8506 | } |
8507 | |
cdfaeed7 |
8508 | static void scan_ahead(FILE *fasm) |
8509 | { |
8510 | char words[2][256]; |
8511 | char line[256]; |
8512 | long oldpos; |
8513 | int oldasmln; |
8514 | int wordc; |
8515 | char *p; |
8516 | int i; |
8517 | |
8518 | oldpos = ftell(fasm); |
8519 | oldasmln = asmln; |
8520 | |
5fa1256f |
8521 | while (my_fgets(line, sizeof(line), fasm)) |
cdfaeed7 |
8522 | { |
8523 | wordc = 0; |
8524 | asmln++; |
8525 | |
8526 | p = sskip(line); |
8527 | if (*p == 0) |
8528 | continue; |
8529 | |
8530 | if (*p == ';') |
8531 | { |
8532 | // get rid of random tabs |
8533 | for (i = 0; line[i] != 0; i++) |
8534 | if (line[i] == '\t') |
8535 | line[i] = ' '; |
8536 | |
8537 | if (p[2] == 'S' && IS_START(p, "; START OF FUNCTION CHUNK FOR ")) |
8538 | { |
8539 | p += 30; |
8540 | next_word(words[0], sizeof(words[0]), p); |
8541 | if (words[0][0] == 0) |
8542 | aerr("missing name for func chunk?\n"); |
8543 | |
8544 | add_func_chunk(fasm, words[0], asmln); |
8545 | } |
46b388c2 |
8546 | else if (IS_START(p, "; sctend")) |
8547 | break; |
8548 | |
cdfaeed7 |
8549 | continue; |
8550 | } // *p == ';' |
8551 | |
8552 | for (wordc = 0; wordc < ARRAY_SIZE(words); wordc++) { |
8553 | words[wordc][0] = 0; |
8554 | p = sskip(next_word_s(words[wordc], sizeof(words[0]), p)); |
8555 | if (*p == 0 || *p == ';') { |
8556 | wordc++; |
8557 | break; |
8558 | } |
8559 | } |
8560 | |
8561 | if (wordc == 2 && IS(words[1], "ends")) |
8562 | break; |
8563 | } |
8564 | |
8565 | fseek(fasm, oldpos, SEEK_SET); |
8566 | asmln = oldasmln; |
8567 | } |
8568 | |
91977a1c |
8569 | int main(int argc, char *argv[]) |
8570 | { |
06c5d854 |
8571 | FILE *fout, *fasm, *frlist; |
4c45fa73 |
8572 | struct parsed_data *pd = NULL; |
8573 | int pd_alloc = 0; |
8574 | char **rlist = NULL; |
8575 | int rlist_len = 0; |
8576 | int rlist_alloc = 0; |
e56ab892 |
8577 | int func_chunks_used = 0; |
8578 | int func_chunks_sorted = 0; |
e56ab892 |
8579 | int func_chunk_i = -1; |
8580 | long func_chunk_ret = 0; |
de50b98b |
8581 | int func_chunk_ret_ln = 0; |
cdfaeed7 |
8582 | int scanned_ahead = 0; |
91977a1c |
8583 | char line[256]; |
a2c1d768 |
8584 | char words[20][256]; |
4c45fa73 |
8585 | enum opr_lenmod lmod; |
ddaf8bd7 |
8586 | char *sctproto = NULL; |
91977a1c |
8587 | int in_func = 0; |
4c45fa73 |
8588 | int pending_endp = 0; |
11437ea1 |
8589 | int skip_code = 0; |
8590 | int skip_code_end = 0; |
940e8e66 |
8591 | int skip_warned = 0; |
91977a1c |
8592 | int eq_alloc; |
bfa4a6ee |
8593 | int verbose = 0; |
1f84f6b3 |
8594 | int multi_seg = 0; |
46b388c2 |
8595 | int end = 0; |
bfa4a6ee |
8596 | int arg_out; |
89ff3147 |
8597 | int arg; |
91977a1c |
8598 | int pi = 0; |
e56ab892 |
8599 | int i, j; |
8600 | int ret, len; |
91977a1c |
8601 | char *p; |
8602 | int wordc; |
8603 | |
89ff3147 |
8604 | for (arg = 1; arg < argc; arg++) { |
8605 | if (IS(argv[arg], "-v")) |
8606 | verbose = 1; |
8607 | else if (IS(argv[arg], "-rf")) |
8608 | g_allow_regfunc = 1; |
8c83cc48 |
8609 | else if (IS(argv[arg], "-uc")) |
8610 | g_allow_user_icall = 1; |
1f84f6b3 |
8611 | else if (IS(argv[arg], "-m")) |
8612 | multi_seg = 1; |
92d715b6 |
8613 | else if (IS(argv[arg], "-hdr")) |
9af2d373 |
8614 | g_header_mode = g_quiet_pp = g_allow_regfunc = 1; |
89ff3147 |
8615 | else |
8616 | break; |
bfa4a6ee |
8617 | } |
8618 | |
8619 | if (argc < arg + 3) { |
315b77eb |
8620 | printf("usage:\n%s [-v] [-rf] [-m] <.c> <.asm> <hdr.h> [rlist]*\n" |
8621 | "%s -hdr <out.h> <.asm> <seed.h> [rlist]*\n" |
8622 | "options:\n" |
8623 | " -hdr - header generation mode\n" |
8624 | " -rf - allow unannotated indirect calls\n" |
8c83cc48 |
8625 | " -uc - allow ind. calls/refs to __usercall\n" |
315b77eb |
8626 | " -m - allow multiple .text sections\n" |
8627 | "[rlist] is a file with function names to skip," |
8628 | " one per line\n", |
92d715b6 |
8629 | argv[0], argv[0]); |
91977a1c |
8630 | return 1; |
8631 | } |
8632 | |
bfa4a6ee |
8633 | arg_out = arg++; |
91977a1c |
8634 | |
bfa4a6ee |
8635 | asmfn = argv[arg++]; |
91977a1c |
8636 | fasm = fopen(asmfn, "r"); |
8637 | my_assert_not(fasm, NULL); |
8638 | |
bfa4a6ee |
8639 | hdrfn = argv[arg++]; |
06c5d854 |
8640 | g_fhdr = fopen(hdrfn, "r"); |
8641 | my_assert_not(g_fhdr, NULL); |
bfa4a6ee |
8642 | |
8643 | rlist_alloc = 64; |
8644 | rlist = malloc(rlist_alloc * sizeof(rlist[0])); |
8645 | my_assert_not(rlist, NULL); |
8646 | // needs special handling.. |
8647 | rlist[rlist_len++] = "__alloca_probe"; |
8648 | |
e56ab892 |
8649 | func_chunk_alloc = 32; |
8650 | func_chunks = malloc(func_chunk_alloc * sizeof(func_chunks[0])); |
8651 | my_assert_not(func_chunks, NULL); |
8652 | |
a2c1d768 |
8653 | memset(words, 0, sizeof(words)); |
8654 | |
bfa4a6ee |
8655 | for (; arg < argc; arg++) { |
11437ea1 |
8656 | int skip_func = 0; |
8657 | |
bfa4a6ee |
8658 | frlist = fopen(argv[arg], "r"); |
8659 | my_assert_not(frlist, NULL); |
8660 | |
5fa1256f |
8661 | while (my_fgets(line, sizeof(line), frlist)) { |
bfa4a6ee |
8662 | p = sskip(line); |
1cd4a663 |
8663 | if (*p == 0 || *p == ';') |
8664 | continue; |
8665 | if (*p == '#') { |
89ff3147 |
8666 | if (IS_START(p, "#if 0") |
8667 | || (g_allow_regfunc && IS_START(p, "#if NO_REGFUNC"))) |
8668 | { |
1cd4a663 |
8669 | skip_func = 1; |
89ff3147 |
8670 | } |
1cd4a663 |
8671 | else if (IS_START(p, "#endif")) |
8672 | skip_func = 0; |
8673 | continue; |
8674 | } |
8675 | if (skip_func) |
bfa4a6ee |
8676 | continue; |
8677 | |
8678 | p = next_word(words[0], sizeof(words[0]), p); |
8679 | if (words[0][0] == 0) |
8680 | continue; |
8681 | |
8682 | if (rlist_len >= rlist_alloc) { |
8683 | rlist_alloc = rlist_alloc * 2 + 64; |
8684 | rlist = realloc(rlist, rlist_alloc * sizeof(rlist[0])); |
8685 | my_assert_not(rlist, NULL); |
8686 | } |
8687 | rlist[rlist_len++] = strdup(words[0]); |
8688 | } |
8689 | |
8690 | fclose(frlist); |
8691 | frlist = NULL; |
8692 | } |
8693 | |
8694 | if (rlist_len > 0) |
8695 | qsort(rlist, rlist_len, sizeof(rlist[0]), cmpstringp); |
8696 | |
8697 | fout = fopen(argv[arg_out], "w"); |
91977a1c |
8698 | my_assert_not(fout, NULL); |
8699 | |
8700 | eq_alloc = 128; |
8701 | g_eqs = malloc(eq_alloc * sizeof(g_eqs[0])); |
8702 | my_assert_not(g_eqs, NULL); |
8703 | |
4c45fa73 |
8704 | for (i = 0; i < ARRAY_SIZE(g_label_refs); i++) { |
8705 | g_label_refs[i].i = -1; |
8706 | g_label_refs[i].next = NULL; |
8707 | } |
8708 | |
5fa1256f |
8709 | if (g_header_mode) |
4c20744d |
8710 | scan_variables(fasm, rlist, rlist_len); |
5fa1256f |
8711 | |
8712 | while (my_fgets(line, sizeof(line), fasm)) |
91977a1c |
8713 | { |
4c45fa73 |
8714 | wordc = 0; |
91977a1c |
8715 | asmln++; |
8716 | |
8717 | p = sskip(line); |
1bafb621 |
8718 | if (*p == 0) |
91977a1c |
8719 | continue; |
8720 | |
de50b98b |
8721 | // get rid of random tabs |
8722 | for (i = 0; line[i] != 0; i++) |
8723 | if (line[i] == '\t') |
8724 | line[i] = ' '; |
8725 | |
e56ab892 |
8726 | if (*p == ';') |
8727 | { |
e56ab892 |
8728 | if (p[2] == '=' && IS_START(p, "; =============== S U B")) |
8729 | goto do_pending_endp; // eww.. |
8730 | |
8731 | if (p[2] == 'A' && IS_START(p, "; Attributes:")) |
8732 | { |
8733 | static const char *attrs[] = { |
8734 | "bp-based frame", |
8735 | "library function", |
8736 | "static", |
8737 | "noreturn", |
8738 | "thunk", |
8739 | "fpd=", |
8740 | }; |
8741 | |
8742 | // parse IDA's attribute-list comment |
8743 | g_ida_func_attr = 0; |
8744 | p = sskip(p + 13); |
8745 | |
8746 | for (; *p != 0; p = sskip(p)) { |
8747 | for (i = 0; i < ARRAY_SIZE(attrs); i++) { |
8748 | if (!strncmp(p, attrs[i], strlen(attrs[i]))) { |
8749 | g_ida_func_attr |= 1 << i; |
8750 | p += strlen(attrs[i]); |
8751 | break; |
8752 | } |
8753 | } |
8754 | if (i == ARRAY_SIZE(attrs)) { |
8755 | anote("unparsed IDA attr: %s\n", p); |
1bafb621 |
8756 | break; |
8757 | } |
e56ab892 |
8758 | if (IS(attrs[i], "fpd=")) { |
8759 | p = next_word(words[0], sizeof(words[0]), p); |
8760 | // ignore for now.. |
8761 | } |
1bafb621 |
8762 | } |
e56ab892 |
8763 | } |
7e08c224 |
8764 | else if (p[2] == 's' && IS_START(p, "; sctattr:")) |
8765 | { |
8766 | static const char *attrs[] = { |
8767 | "clear_sf", |
226e8df1 |
8768 | "clear_regmask", |
7e08c224 |
8769 | }; |
8770 | |
8771 | // parse manual attribute-list comment |
8772 | g_sct_func_attr = 0; |
8773 | p = sskip(p + 10); |
8774 | |
8775 | for (; *p != 0; p = sskip(p)) { |
8776 | for (i = 0; i < ARRAY_SIZE(attrs); i++) { |
8777 | if (!strncmp(p, attrs[i], strlen(attrs[i]))) { |
8778 | g_sct_func_attr |= 1 << i; |
8779 | p += strlen(attrs[i]); |
8780 | break; |
8781 | } |
8782 | } |
226e8df1 |
8783 | if (*p == '=') { |
8784 | j = ret = 0; |
8785 | if (i == 0) |
8786 | // clear_sf=start,len (in dwords) |
8787 | ret = sscanf(p, "=%d,%d%n", &g_stack_clear_start, |
8788 | &g_stack_clear_len, &j); |
8789 | else if (i == 1) |
8790 | // clear_regmask=<mask> |
6135d8e6 |
8791 | ret = sscanf(p, "=%x%n", &g_regmask_init, &j) + 1; |
7e08c224 |
8792 | if (ret < 2) { |
226e8df1 |
8793 | anote("unparsed attr value: %s\n", p); |
7e08c224 |
8794 | break; |
8795 | } |
8796 | p += j; |
8797 | } |
8798 | else if (i == ARRAY_SIZE(attrs)) { |
8799 | anote("unparsed sct attr: %s\n", p); |
8800 | break; |
8801 | } |
8802 | } |
8803 | } |
e56ab892 |
8804 | else if (p[2] == 'S' && IS_START(p, "; START OF FUNCTION CHUNK FOR ")) |
8805 | { |
8806 | p += 30; |
8807 | next_word(words[0], sizeof(words[0]), p); |
8808 | if (words[0][0] == 0) |
cdfaeed7 |
8809 | aerr("missing name for func chunk?\n"); |
8810 | |
8811 | if (!scanned_ahead) { |
8812 | add_func_chunk(fasm, words[0], asmln); |
8813 | func_chunks_sorted = 0; |
e56ab892 |
8814 | } |
e56ab892 |
8815 | } |
8816 | else if (p[2] == 'E' && IS_START(p, "; END OF FUNCTION CHUNK")) |
8817 | { |
8818 | if (func_chunk_i >= 0) { |
8819 | if (func_chunk_i < func_chunk_cnt |
8820 | && IS(func_chunks[func_chunk_i].name, g_func)) |
8821 | { |
8822 | // move on to next chunk |
8823 | ret = fseek(fasm, func_chunks[func_chunk_i].fptr, SEEK_SET); |
8824 | if (ret) |
8825 | aerr("seek failed for '%s' chunk #%d\n", |
8826 | g_func, func_chunk_i); |
de50b98b |
8827 | asmln = func_chunks[func_chunk_i].asmln; |
e56ab892 |
8828 | func_chunk_i++; |
8829 | } |
8830 | else { |
8831 | if (func_chunk_ret == 0) |
8832 | aerr("no return from chunk?\n"); |
8833 | fseek(fasm, func_chunk_ret, SEEK_SET); |
de50b98b |
8834 | asmln = func_chunk_ret_ln; |
e56ab892 |
8835 | func_chunk_ret = 0; |
8836 | pending_endp = 1; |
8837 | } |
1bafb621 |
8838 | } |
e56ab892 |
8839 | } |
8840 | else if (p[2] == 'F' && IS_START(p, "; FUNCTION CHUNK AT ")) { |
8841 | func_chunks_used = 1; |
8842 | p += 20; |
8843 | if (IS_START(g_func, "sub_")) { |
8844 | unsigned long addr = strtoul(p, NULL, 16); |
8845 | unsigned long f_addr = strtoul(g_func + 4, NULL, 16); |
cdfaeed7 |
8846 | if (addr > f_addr && !scanned_ahead) { |
b2bd20c0 |
8847 | //anote("scan_ahead caused by '%s', addr %lx\n", |
8848 | // g_func, addr); |
cdfaeed7 |
8849 | scan_ahead(fasm); |
8850 | scanned_ahead = 1; |
8851 | func_chunks_sorted = 0; |
8852 | } |
1bafb621 |
8853 | } |
8854 | } |
8855 | continue; |
e56ab892 |
8856 | } // *p == ';' |
1bafb621 |
8857 | |
06c5d854 |
8858 | parse_words: |
a2c1d768 |
8859 | for (i = wordc; i < ARRAY_SIZE(words); i++) |
8860 | words[i][0] = 0; |
cdfaeed7 |
8861 | for (wordc = 0; wordc < ARRAY_SIZE(words); wordc++) { |
bfa4a6ee |
8862 | p = sskip(next_word_s(words[wordc], sizeof(words[0]), p)); |
91977a1c |
8863 | if (*p == 0 || *p == ';') { |
8864 | wordc++; |
8865 | break; |
8866 | } |
8867 | } |
a2c1d768 |
8868 | if (*p != 0 && *p != ';') |
8869 | aerr("too many words\n"); |
91977a1c |
8870 | |
11437ea1 |
8871 | if (skip_code_end) { |
8872 | skip_code_end = 0; |
8873 | skip_code = 0; |
8874 | } |
8875 | |
8876 | // allow asm patches in comments |
ddaf8bd7 |
8877 | if (*p == ';') { |
8878 | if (IS_START(p, "; sctpatch:")) { |
8879 | p = sskip(p + 11); |
8880 | if (*p == 0 || *p == ';') |
8881 | continue; |
8882 | goto parse_words; // lame |
8883 | } |
8884 | if (IS_START(p, "; sctproto:")) { |
8885 | sctproto = strdup(p + 11); |
8886 | } |
46b388c2 |
8887 | else if (IS_START(p, "; sctend")) { |
8888 | end = 1; |
8889 | if (!pending_endp) |
8890 | break; |
8891 | } |
11437ea1 |
8892 | else if (IS_START(p, "; sctskip_start")) { |
8893 | if (in_func && !g_skip_func) { |
8894 | if (!skip_code) { |
8895 | ops[pi].op = OPP_ABORT; |
8896 | ops[pi].asmln = asmln; |
8897 | pi++; |
8898 | } |
8899 | skip_code = 1; |
8900 | } |
8901 | } |
8902 | else if (IS_START(p, "; sctskip_end")) { |
8903 | if (skip_code) |
8904 | skip_code_end = 1; |
8905 | } |
06c5d854 |
8906 | } |
8907 | |
91977a1c |
8908 | if (wordc == 0) { |
8909 | // shouldn't happen |
8910 | awarn("wordc == 0?\n"); |
8911 | continue; |
8912 | } |
8913 | |
8914 | // don't care about this: |
8915 | if (words[0][0] == '.' |
8916 | || IS(words[0], "include") |
8917 | || IS(words[0], "assume") || IS(words[1], "segment") |
8918 | || IS(words[0], "align")) |
8919 | { |
8920 | continue; |
8921 | } |
8922 | |
4c45fa73 |
8923 | do_pending_endp: |
8924 | // do delayed endp processing to collect switch jumptables |
8925 | if (pending_endp) { |
30c8c549 |
8926 | if (in_func && !g_skip_func && !end && wordc >= 2 |
4c45fa73 |
8927 | && ((words[0][0] == 'd' && words[0][2] == 0) |
8928 | || (words[1][0] == 'd' && words[1][2] == 0))) |
8929 | { |
8930 | i = 1; |
8931 | if (words[1][0] == 'd' && words[1][2] == 0) { |
8932 | // label |
8933 | if (g_func_pd_cnt >= pd_alloc) { |
8934 | pd_alloc = pd_alloc * 2 + 16; |
8935 | g_func_pd = realloc(g_func_pd, |
8936 | sizeof(g_func_pd[0]) * pd_alloc); |
8937 | my_assert_not(g_func_pd, NULL); |
8938 | } |
8939 | pd = &g_func_pd[g_func_pd_cnt]; |
8940 | g_func_pd_cnt++; |
8941 | memset(pd, 0, sizeof(*pd)); |
8942 | strcpy(pd->label, words[0]); |
8943 | pd->type = OPT_CONST; |
8944 | pd->lmod = lmod_from_directive(words[1]); |
8945 | i = 2; |
8946 | } |
8947 | else { |
da87ae38 |
8948 | if (pd == NULL) { |
8949 | if (verbose) |
8950 | anote("skipping alignment byte?\n"); |
8951 | continue; |
8952 | } |
4c45fa73 |
8953 | lmod = lmod_from_directive(words[0]); |
8954 | if (lmod != pd->lmod) |
8955 | aerr("lmod change? %d->%d\n", pd->lmod, lmod); |
8956 | } |
8957 | |
8958 | if (pd->count_alloc < pd->count + wordc) { |
8959 | pd->count_alloc = pd->count_alloc * 2 + 14 + wordc; |
8960 | pd->d = realloc(pd->d, sizeof(pd->d[0]) * pd->count_alloc); |
8961 | my_assert_not(pd->d, NULL); |
8962 | } |
8963 | for (; i < wordc; i++) { |
8964 | if (IS(words[i], "offset")) { |
8965 | pd->type = OPT_OFFSET; |
8966 | i++; |
8967 | } |
8968 | p = strchr(words[i], ','); |
8969 | if (p != NULL) |
8970 | *p = 0; |
8971 | if (pd->type == OPT_OFFSET) |
8972 | pd->d[pd->count].u.label = strdup(words[i]); |
8973 | else |
8974 | pd->d[pd->count].u.val = parse_number(words[i]); |
8975 | pd->d[pd->count].bt_i = -1; |
8976 | pd->count++; |
8977 | } |
8978 | continue; |
8979 | } |
8980 | |
30c8c549 |
8981 | if (in_func && !g_skip_func) { |
9af2d373 |
8982 | if (g_header_mode) |
92d715b6 |
8983 | gen_hdr(g_func, pi); |
8984 | else |
8985 | gen_func(fout, g_fhdr, g_func, pi); |
8986 | } |
4c45fa73 |
8987 | |
8988 | pending_endp = 0; |
8989 | in_func = 0; |
8990 | g_ida_func_attr = 0; |
7e08c224 |
8991 | g_sct_func_attr = 0; |
8992 | g_stack_clear_start = 0; |
8993 | g_stack_clear_len = 0; |
226e8df1 |
8994 | g_regmask_init = 0; |
4c45fa73 |
8995 | skip_warned = 0; |
30c8c549 |
8996 | g_skip_func = 0; |
4c45fa73 |
8997 | g_func[0] = 0; |
e56ab892 |
8998 | func_chunks_used = 0; |
8999 | func_chunk_i = -1; |
4c45fa73 |
9000 | if (pi != 0) { |
9001 | memset(&ops, 0, pi * sizeof(ops[0])); |
d7857c3a |
9002 | clear_labels(pi); |
4c45fa73 |
9003 | pi = 0; |
9004 | } |
9005 | g_eqcnt = 0; |
9006 | for (i = 0; i < g_func_pd_cnt; i++) { |
9007 | pd = &g_func_pd[i]; |
9008 | if (pd->type == OPT_OFFSET) { |
9009 | for (j = 0; j < pd->count; j++) |
9010 | free(pd->d[j].u.label); |
9011 | } |
9012 | free(pd->d); |
9013 | pd->d = NULL; |
9014 | } |
9015 | g_func_pd_cnt = 0; |
d4a985bd |
9016 | g_func_lmods = 0; |
4c45fa73 |
9017 | pd = NULL; |
46b388c2 |
9018 | |
9019 | if (end) |
9020 | break; |
4c45fa73 |
9021 | if (wordc == 0) |
9022 | continue; |
9023 | } |
9024 | |
91977a1c |
9025 | if (IS(words[1], "proc")) { |
9026 | if (in_func) |
9027 | aerr("proc '%s' while in_func '%s'?\n", |
9028 | words[0], g_func); |
bfa4a6ee |
9029 | p = words[0]; |
ddaf8bd7 |
9030 | if (bsearch(&p, rlist, rlist_len, sizeof(rlist[0]), cmpstringp)) |
30c8c549 |
9031 | g_skip_func = 1; |
91977a1c |
9032 | strcpy(g_func, words[0]); |
d4e3b5db |
9033 | set_label(0, words[0]); |
91977a1c |
9034 | in_func = 1; |
9035 | continue; |
9036 | } |
9037 | |
e56ab892 |
9038 | if (IS(words[1], "endp")) |
9039 | { |
91977a1c |
9040 | if (!in_func) |
9041 | aerr("endp '%s' while not in_func?\n", words[0]); |
9042 | if (!IS(g_func, words[0])) |
9043 | aerr("endp '%s' while in_func '%s'?\n", |
9044 | words[0], g_func); |
11437ea1 |
9045 | if (skip_code) |
9046 | aerr("endp '%s' while skipping code\n", words[0]); |
bfa4a6ee |
9047 | |
ddaf8bd7 |
9048 | if ((g_ida_func_attr & IDAFA_THUNK) && pi == 1 |
9049 | && ops[0].op == OP_JMP && ops[0].operand[0].had_ds) |
9050 | { |
9051 | // import jump |
30c8c549 |
9052 | g_skip_func = 1; |
ddaf8bd7 |
9053 | } |
9054 | |
30c8c549 |
9055 | if (!g_skip_func && func_chunks_used) { |
e56ab892 |
9056 | // start processing chunks |
9057 | struct chunk_item *ci, key = { g_func, 0 }; |
9058 | |
9059 | func_chunk_ret = ftell(fasm); |
de50b98b |
9060 | func_chunk_ret_ln = asmln; |
e56ab892 |
9061 | if (!func_chunks_sorted) { |
9062 | qsort(func_chunks, func_chunk_cnt, |
9063 | sizeof(func_chunks[0]), cmp_chunks); |
9064 | func_chunks_sorted = 1; |
9065 | } |
9066 | ci = bsearch(&key, func_chunks, func_chunk_cnt, |
9067 | sizeof(func_chunks[0]), cmp_chunks); |
9068 | if (ci == NULL) |
9069 | aerr("'%s' needs chunks, but none found\n", g_func); |
9070 | func_chunk_i = ci - func_chunks; |
9071 | for (; func_chunk_i > 0; func_chunk_i--) |
9072 | if (!IS(func_chunks[func_chunk_i - 1].name, g_func)) |
9073 | break; |
9074 | |
9075 | ret = fseek(fasm, func_chunks[func_chunk_i].fptr, SEEK_SET); |
9076 | if (ret) |
9077 | aerr("seek failed for '%s' chunk #%d\n", g_func, func_chunk_i); |
de50b98b |
9078 | asmln = func_chunks[func_chunk_i].asmln; |
e56ab892 |
9079 | func_chunk_i++; |
9080 | continue; |
9081 | } |
4c45fa73 |
9082 | pending_endp = 1; |
91977a1c |
9083 | continue; |
9084 | } |
9085 | |
1f84f6b3 |
9086 | if (wordc == 2 && IS(words[1], "ends")) { |
46b388c2 |
9087 | if (!multi_seg) { |
9088 | end = 1; |
9089 | if (pending_endp) |
9090 | goto do_pending_endp; |
1f84f6b3 |
9091 | break; |
46b388c2 |
9092 | } |
1f84f6b3 |
9093 | |
9094 | // scan for next text segment |
5fa1256f |
9095 | while (my_fgets(line, sizeof(line), fasm)) { |
1f84f6b3 |
9096 | asmln++; |
9097 | p = sskip(line); |
9098 | if (*p == 0 || *p == ';') |
9099 | continue; |
9100 | |
9101 | if (strstr(p, "segment para public 'CODE' use32")) |
9102 | break; |
9103 | } |
9104 | |
9105 | continue; |
9106 | } |
a2c1d768 |
9107 | |
bfa4a6ee |
9108 | p = strchr(words[0], ':'); |
9109 | if (p != NULL) { |
d4e3b5db |
9110 | set_label(pi, words[0]); |
bfa4a6ee |
9111 | continue; |
9112 | } |
9113 | |
11437ea1 |
9114 | if (!in_func || g_skip_func || skip_code) { |
30c8c549 |
9115 | if (!skip_warned && !g_skip_func && g_labels[pi] != NULL) { |
bfa4a6ee |
9116 | if (verbose) |
9117 | anote("skipping from '%s'\n", g_labels[pi]); |
9118 | skip_warned = 1; |
9119 | } |
d7857c3a |
9120 | free(g_labels[pi]); |
9121 | g_labels[pi] = NULL; |
bfa4a6ee |
9122 | continue; |
9123 | } |
9124 | |
ddaf8bd7 |
9125 | if (wordc > 1 && IS(words[1], "=")) |
9126 | { |
91977a1c |
9127 | if (wordc != 5) |
9128 | aerr("unhandled equ, wc=%d\n", wordc); |
9129 | if (g_eqcnt >= eq_alloc) { |
9130 | eq_alloc *= 2; |
9131 | g_eqs = realloc(g_eqs, eq_alloc * sizeof(g_eqs[0])); |
9132 | my_assert_not(g_eqs, NULL); |
9133 | } |
9134 | |
9135 | len = strlen(words[0]); |
9136 | if (len > sizeof(g_eqs[0].name) - 1) |
9137 | aerr("equ name too long: %d\n", len); |
9138 | strcpy(g_eqs[g_eqcnt].name, words[0]); |
9139 | |
9140 | if (!IS(words[3], "ptr")) |
9141 | aerr("unhandled equ\n"); |
9142 | if (IS(words[2], "dword")) |
9143 | g_eqs[g_eqcnt].lmod = OPLM_DWORD; |
9144 | else if (IS(words[2], "word")) |
9145 | g_eqs[g_eqcnt].lmod = OPLM_WORD; |
9146 | else if (IS(words[2], "byte")) |
9147 | g_eqs[g_eqcnt].lmod = OPLM_BYTE; |
90307a99 |
9148 | else if (IS(words[2], "qword")) |
9149 | g_eqs[g_eqcnt].lmod = OPLM_QWORD; |
91977a1c |
9150 | else |
9151 | aerr("bad lmod: '%s'\n", words[2]); |
9152 | |
9153 | g_eqs[g_eqcnt].offset = parse_number(words[4]); |
9154 | g_eqcnt++; |
9155 | continue; |
9156 | } |
9157 | |
9158 | if (pi >= ARRAY_SIZE(ops)) |
9159 | aerr("too many ops\n"); |
9160 | |
91977a1c |
9161 | parse_op(&ops[pi], words, wordc); |
ddaf8bd7 |
9162 | |
865f1aca |
9163 | ops[pi].datap = sctproto; |
9164 | sctproto = NULL; |
91977a1c |
9165 | pi++; |
91977a1c |
9166 | } |
9167 | |
9af2d373 |
9168 | if (g_header_mode) |
92d715b6 |
9169 | output_hdr(fout); |
9170 | |
91977a1c |
9171 | fclose(fout); |
9172 | fclose(fasm); |
06c5d854 |
9173 | fclose(g_fhdr); |
91977a1c |
9174 | |
9175 | return 0; |
c36e914d |
9176 | } |
91977a1c |
9177 | |
9178 | // vim:ts=2:shiftwidth=2:expandtab |