fc1c61f5 |
1 | /* |
2 | * ia32rtools |
3 | * (C) notaz, 2013,2014 |
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 | |
d8891fcc |
9 | #define NO_OBSOLETE_FUNCS |
10 | #include <ida.hpp> |
11 | #include <idp.hpp> |
12 | #include <bytes.hpp> |
13 | #include <loader.hpp> |
14 | #include <kernwin.hpp> |
15 | |
16 | #include <name.hpp> |
17 | #include <frame.hpp> |
18 | #include <struct.hpp> |
fc1c61f5 |
19 | #include <offset.hpp> |
d8891fcc |
20 | #include <auto.hpp> |
15c7b2a4 |
21 | #include <intel.hpp> |
d8891fcc |
22 | |
23 | #define IS_START(w, y) !strncmp(w, y, strlen(y)) |
24 | #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0])) |
25 | |
97609f07 |
26 | static char **name_cache; |
27 | static size_t name_cache_size; |
28 | |
15c7b2a4 |
29 | // non-local branch targets |
30 | static ea_t *nonlocal_bt; |
31 | static int nonlocal_bt_alloc; |
32 | static int nonlocal_bt_cnt; |
33 | |
d8891fcc |
34 | //-------------------------------------------------------------------------- |
35 | static int idaapi init(void) |
36 | { |
37 | return PLUGIN_OK; |
38 | } |
39 | |
40 | //-------------------------------------------------------------------------- |
41 | static void idaapi term(void) |
42 | { |
97609f07 |
43 | size_t i; |
44 | |
15c7b2a4 |
45 | if (nonlocal_bt != NULL) { |
46 | free(nonlocal_bt); |
47 | nonlocal_bt = NULL; |
48 | } |
49 | nonlocal_bt_alloc = 0; |
97609f07 |
50 | |
51 | if (name_cache != NULL) { |
52 | for (i = 0; i < name_cache_size; i++) |
53 | free(name_cache[i]); |
54 | free(name_cache); |
55 | name_cache = NULL; |
56 | } |
57 | name_cache_size = 0; |
d8891fcc |
58 | } |
59 | |
60 | //-------------------------------------------------------------------------- |
61 | |
62 | static const char *reserved_names[] = { |
63 | "name", |
b587e6ae |
64 | "type", |
d8891fcc |
65 | "offset", |
b587e6ae |
66 | "aam", |
1402b79d |
67 | "text", |
de8a204c |
68 | "size", |
69 | "c", |
97609f07 |
70 | "align", |
d8891fcc |
71 | }; |
72 | |
73 | static int is_name_reserved(const char *name) |
74 | { |
75 | int i; |
76 | for (i = 0; i < ARRAY_SIZE(reserved_names); i++) |
77 | if (strcasecmp(name, reserved_names[i]) == 0) |
78 | return 1; |
79 | |
80 | return 0; |
81 | } |
82 | |
15c7b2a4 |
83 | static int nonlocal_bt_cmp(const void *p1, const void *p2) |
84 | { |
85 | const ea_t *e1 = (const ea_t *)p1, *e2 = (const ea_t *)p2; |
86 | return *e1 - *e2; |
87 | } |
88 | |
89 | static void nonlocal_add(ea_t ea) |
90 | { |
91 | if (nonlocal_bt_cnt >= nonlocal_bt_alloc) { |
92 | nonlocal_bt_alloc += nonlocal_bt_alloc * 2 + 64; |
93 | nonlocal_bt = (ea_t *)realloc(nonlocal_bt, |
94 | nonlocal_bt_alloc * sizeof(nonlocal_bt[0])); |
95 | if (nonlocal_bt == NULL) { |
96 | msg("OOM\n"); |
97 | return; |
98 | } |
99 | } |
100 | nonlocal_bt[nonlocal_bt_cnt++] = ea; |
101 | } |
102 | |
b587e6ae |
103 | // is instruction a (un)conditional jump (not call)? |
104 | static int is_insn_jmp(uint16 itype) |
105 | { |
106 | return itype == NN_jmp || (NN_ja <= itype && itype <= NN_jz); |
107 | } |
108 | |
d53d4cc7 |
109 | static void do_def_line(char *buf, size_t buf_size, const char *line, |
110 | ea_t ea) |
d8891fcc |
111 | { |
d53d4cc7 |
112 | ea_t *ea_ret; |
113 | char *p; |
d8891fcc |
114 | int len; |
115 | |
116 | tag_remove(line, buf, buf_size); // remove color codes |
117 | len = strlen(buf); |
118 | if (len < 9) { |
119 | buf[0] = 0; |
120 | return; |
121 | } |
122 | memmove(buf, buf + 9, len - 9 + 1); // rm address |
15c7b2a4 |
123 | |
d53d4cc7 |
124 | p = buf; |
125 | while (*p && *p != ' ' && *p != ':') |
126 | p++; |
127 | if (*p == ':') { |
128 | ea_ret = (ea_t *)bsearch(&ea, nonlocal_bt, nonlocal_bt_cnt, |
129 | sizeof(nonlocal_bt[0]), nonlocal_bt_cmp); |
130 | if (ea_ret != 0) { |
131 | if (p[1] != ' ') |
132 | msg("no trailing blank in '%s'\n", buf); |
133 | else |
134 | p[1] = ':'; |
15c7b2a4 |
135 | } |
136 | } |
d8891fcc |
137 | } |
138 | |
97609f07 |
139 | static int name_cache_cmp(const void *p1, const void *p2) |
140 | { |
141 | // masm ignores case, so do we |
142 | return stricmp(*(char * const *)p1, *(char * const *)p2); |
143 | } |
144 | |
145 | static void rebuild_name_cache(void) |
146 | { |
147 | size_t i, newsize; |
148 | void *tmp; |
149 | |
150 | // build a sorted name cache |
151 | newsize = get_nlist_size(); |
152 | if (newsize > name_cache_size) { |
153 | tmp = realloc(name_cache, newsize * sizeof(name_cache[0])); |
154 | if (tmp == NULL) { |
155 | msg("OOM for name cache\n"); |
156 | return; |
157 | } |
158 | name_cache = (char **)tmp; |
159 | } |
160 | for (i = 0; i < name_cache_size; i++) |
161 | free(name_cache[i]); |
162 | for (i = 0; i < newsize; i++) |
163 | name_cache[i] = strdup(get_nlist_name(i)); |
164 | |
165 | name_cache_size = newsize; |
166 | qsort(name_cache, name_cache_size, sizeof(name_cache[0]), |
167 | name_cache_cmp); |
168 | } |
169 | |
170 | static void my_rename(ea_t ea, char *name) |
171 | { |
172 | char buf[256]; |
173 | char *p, **pp; |
174 | int n = 0; |
175 | |
176 | qsnprintf(buf, sizeof(buf), "%s", name); |
177 | do { |
178 | p = buf; |
179 | pp = (char **)bsearch(&p, name_cache, name_cache_size, |
180 | sizeof(name_cache[0]), name_cache_cmp); |
181 | if (pp == NULL) |
182 | break; |
183 | |
184 | qsnprintf(buf, sizeof(buf), "%s_g%d", name, n); |
185 | n++; |
186 | } |
187 | while (n < 100); |
188 | |
189 | if (n == 100) |
190 | msg("rename failure? '%s'\n", name); |
191 | |
192 | do_name_anyway(ea, buf); |
193 | rebuild_name_cache(); |
194 | } |
195 | |
ee8e1bea |
196 | static void make_align(ea_t ea) |
197 | { |
198 | ea_t tmp_ea; |
199 | int n; |
200 | |
201 | tmp_ea = next_head(ea, inf.maxEA); |
202 | if ((tmp_ea & 0x03) == 0) { |
203 | n = calc_max_align(tmp_ea); |
204 | if (n > 4) // masm doesn't like more.. |
205 | n = 4; |
206 | msg("%x: align %d\n", ea, 1 << n); |
207 | do_unknown(ea, DOUNK_SIMPLE); |
208 | doAlign(ea, tmp_ea - ea, n); |
209 | } |
210 | } |
211 | |
d8891fcc |
212 | static void idaapi run(int /*arg*/) |
213 | { |
15c7b2a4 |
214 | // isEnabled(ea) // address belongs to disassembly |
d8891fcc |
215 | // ea_t ea = get_screen_ea(); |
ee8e1bea |
216 | // extern foo; |
15c7b2a4 |
217 | // foo = DecodeInstruction(ScreenEA()); |
d8891fcc |
218 | FILE *fout = NULL; |
219 | int fout_line = 0; |
220 | char buf[MAXSTR]; |
1caf86bb |
221 | char buf2[MAXSTR]; |
b587e6ae |
222 | const char *name; |
d8891fcc |
223 | struc_t *frame; |
224 | func_t *func; |
15c7b2a4 |
225 | ea_t ui_ea_block = 0, ea_size; |
226 | ea_t tmp_ea, target_ea; |
d8891fcc |
227 | ea_t ea; |
b587e6ae |
228 | flags_t ea_flags; |
1caf86bb |
229 | uval_t idx; |
d8891fcc |
230 | int i, o, m, n; |
231 | int ret; |
97609f07 |
232 | char **pp; |
d8891fcc |
233 | char *p; |
234 | |
15c7b2a4 |
235 | nonlocal_bt_cnt = 0; |
236 | |
1caf86bb |
237 | // get rid of structs, masm doesn't understand them |
238 | idx = get_first_struc_idx(); |
239 | while (idx != BADNODE) { |
240 | tid_t tid = get_struc_by_idx(idx); |
241 | struc_t *struc = get_struc(tid); |
242 | get_struc_name(tid, buf, sizeof(buf)); |
243 | msg("removing struct '%s'\n", buf); |
244 | //del_struc_members(struc, 0, get_max_offset(struc)); |
245 | del_struc(struc); |
246 | |
247 | idx = get_first_struc_idx(); |
248 | } |
249 | |
97609f07 |
250 | rebuild_name_cache(); |
251 | |
15c7b2a4 |
252 | // 1st pass: walk through all funcs |
97609f07 |
253 | ea = inf.minEA; |
254 | func = get_func(ea); |
d8891fcc |
255 | while (func != NULL) |
256 | { |
15c7b2a4 |
257 | func_tail_iterator_t fti(func); |
258 | if (!fti.main()) { |
259 | msg("%x: func_tail_iterator_t main failed\n", ea); |
260 | return; |
261 | } |
262 | const area_t &f_area = fti.chunk(); |
263 | ea = f_area.startEA; |
264 | |
265 | // rename global syms which conflict with frame member names |
d8891fcc |
266 | frame = get_frame(func); |
267 | if (frame != NULL) |
268 | { |
269 | for (m = 0; m < (int)frame->memqty; m++) |
270 | { |
271 | ret = get_member_name(frame->members[m].id, buf, sizeof(buf)); |
272 | if (ret <= 0) { |
273 | msg("%x: member has no name?\n", ea); |
274 | return; |
275 | } |
276 | if (buf[0] == ' ') // what's this? |
277 | continue; |
278 | if (IS_START(buf, "arg_") || IS_START(buf, "var_")) |
279 | continue; |
280 | |
1caf86bb |
281 | // check for dupe names |
282 | int m1, dupe = 0; |
283 | for (m1 = 0; m1 < m; m1++) { |
284 | get_member_name(frame->members[m1].id, buf2, sizeof(buf2)); |
285 | if (stricmp(buf, buf2) == 0) |
286 | dupe = 1; |
287 | } |
288 | |
289 | if (is_name_reserved(buf) || dupe) { |
d8891fcc |
290 | msg("%x: renaming '%s'\n", ea, buf); |
291 | qstrncat(buf, "_", sizeof(buf)); |
292 | ret = set_member_name(frame, frame->members[m].soff, buf); |
293 | if (!ret) { |
294 | msg("%x: renaming failed\n", ea); |
295 | return; |
296 | } |
297 | } |
298 | |
97609f07 |
299 | p = buf; |
300 | pp = (char **)bsearch(&p, name_cache, name_cache_size, |
301 | sizeof(name_cache[0]), name_cache_cmp); |
302 | if (pp == NULL) |
d8891fcc |
303 | continue; |
304 | |
97609f07 |
305 | tmp_ea = get_name_ea(BADADDR, *pp); |
306 | msg("%x: renaming '%s' because of '%s' at %x\n", |
307 | tmp_ea, *pp, buf, ea); |
308 | my_rename(tmp_ea, *pp); |
d8891fcc |
309 | } |
310 | } |
311 | |
312 | func = get_next_func(ea); |
15c7b2a4 |
313 | } |
314 | |
b587e6ae |
315 | // 2nd pass over whole .text and .(ro)data segments |
15c7b2a4 |
316 | for (ea = inf.minEA; ea != BADADDR; ea = next_head(ea, inf.maxEA)) |
317 | { |
318 | segment_t *seg = getseg(ea); |
b587e6ae |
319 | if (!seg) |
320 | break; |
321 | if (seg->type == SEG_XTRN) |
322 | continue; |
323 | if (seg->type != SEG_CODE && seg->type != SEG_DATA) |
15c7b2a4 |
324 | break; |
325 | |
b587e6ae |
326 | ea_flags = get_flags_novalue(ea); |
15c7b2a4 |
327 | func = get_func(ea); |
328 | if (isCode(ea_flags)) |
329 | { |
330 | if (!decode_insn(ea)) { |
331 | msg("%x: decode_insn() failed\n", ea); |
332 | continue; |
333 | } |
334 | |
b587e6ae |
335 | // masm doesn't understand IDA's float/xmm types |
336 | if (cmd.itype == NN_fld || cmd.itype == NN_fst |
337 | || cmd.itype == NN_movapd || cmd.itype == NN_movlpd) |
338 | { |
339 | for (o = 0; o < UA_MAXOP; o++) { |
340 | if (cmd.Operands[o].type == o_void) |
341 | break; |
342 | |
343 | if (cmd.Operands[o].type == o_mem) { |
344 | tmp_ea = cmd.Operands[o].addr; |
345 | flags_t tmp_ea_flags = get_flags_novalue(tmp_ea); |
feb0ee5d |
346 | // ..but base float is ok.. |
347 | int is_flt = isDwrd(tmp_ea_flags) || isFloat(tmp_ea_flags); |
348 | if (!is_flt && !isUnknown(tmp_ea_flags)) |
349 | { |
b587e6ae |
350 | buf[0] = 0; |
351 | get_name(ea, tmp_ea, buf, sizeof(buf)); |
352 | msg("%x: undefining %x '%s'\n", ea, tmp_ea, buf); |
353 | do_unknown(tmp_ea, DOUNK_EXPAND); |
354 | } |
355 | } |
356 | } |
357 | } |
1caf86bb |
358 | else if (cmd.itype == NN_lea) { |
fc1c61f5 |
359 | // detect code alignment |
1caf86bb |
360 | if (cmd.Operands[0].reg == cmd.Operands[1].reg |
361 | && cmd.Operands[1].type == o_displ |
362 | && cmd.Operands[1].addr == 0) |
363 | { |
ee8e1bea |
364 | // lea eax, [eax+0] |
365 | make_align(ea); |
1caf86bb |
366 | } |
fc1c61f5 |
367 | else if (!isDefArg1(ea_flags) |
368 | && cmd.Operands[1].type == o_mem // why o_mem? |
369 | && cmd.Operands[1].dtyp == dt_dword) |
370 | { |
371 | if (inf.minEA <= cmd.Operands[1].addr |
372 | && cmd.Operands[1].addr < inf.maxEA) |
373 | { |
374 | // lea to segments, like ds:58D6A8h[edx*8] |
375 | msg("%x: lea offset to %x\n", ea, cmd.Operands[1].addr); |
376 | op_offset(ea, 1, REF_OFF32); |
377 | } |
378 | else |
379 | { |
380 | // ds:0[eax*8] -> [eax*8+0] |
381 | msg("%x: dropping ds: for %x\n", ea, cmd.Operands[1].addr); |
382 | op_hex(ea, 1); |
383 | } |
384 | } |
1caf86bb |
385 | } |
ee8e1bea |
386 | else if (cmd.itype == NN_mov && cmd.segpref == 0x1e // 2e? |
387 | && cmd.Operands[0].type == o_reg |
388 | && cmd.Operands[1].type == o_reg |
389 | && cmd.Operands[0].dtyp == cmd.Operands[1].dtyp |
390 | && cmd.Operands[0].reg == cmd.Operands[1].reg) |
391 | { |
392 | // db 2Eh; mov eax, eax |
393 | make_align(ea); |
394 | } |
b587e6ae |
395 | |
15c7b2a4 |
396 | // find non-local branches |
b587e6ae |
397 | if (is_insn_jmp(cmd.itype) && cmd.Operands[0].type == o_near) |
15c7b2a4 |
398 | { |
399 | target_ea = cmd.Operands[0].addr; |
400 | if (func == NULL) |
401 | nonlocal_add(target_ea); |
402 | else { |
403 | ret = get_func_chunknum(func, target_ea); |
404 | if (ret != 0) { |
405 | // a jump to another func or chunk |
406 | // check if it lands on func start |
407 | if (!isFunc(get_flags_novalue(target_ea))) |
408 | nonlocal_add(target_ea); |
409 | } |
410 | } |
411 | } |
412 | } |
413 | else { // not code |
1caf86bb |
414 | int do_undef = 0; |
415 | ea_size = get_item_size(ea); |
416 | |
15c7b2a4 |
417 | if (func == NULL && isOff0(ea_flags)) { |
15c7b2a4 |
418 | for (tmp_ea = 0; tmp_ea < ea_size; tmp_ea += 4) |
419 | nonlocal_add(get_long(ea + tmp_ea)); |
420 | } |
b587e6ae |
421 | |
422 | // IDA vs masm float/mmx/xmm type incompatibility |
423 | if (isDouble(ea_flags) || isTbyt(ea_flags) |
424 | || isPackReal(ea_flags)) |
425 | { |
1caf86bb |
426 | do_undef = 1; |
427 | } |
428 | else if (isOwrd(ea_flags)) { |
b587e6ae |
429 | buf[0] = 0; |
430 | get_name(BADADDR, ea, buf, sizeof(buf)); |
1caf86bb |
431 | if (IS_START(buf, "xmm")) |
432 | do_undef = 1; |
433 | } |
434 | // masm doesn't understand IDA's unicode |
435 | else if (isASCII(ea_flags) && ea_size >= 4 |
436 | && (get_long(ea) & 0xff00ff00) == 0) // lame.. |
437 | { |
438 | do_undef = 1; |
439 | } |
440 | // masm doesn't understand large aligns |
441 | else if (isAlign(ea_flags) && ea_size > 0x10) { |
442 | msg("%x: undefining align %d\n", ea, ea_size); |
b587e6ae |
443 | do_unknown(ea, DOUNK_EXPAND); |
444 | } |
1caf86bb |
445 | |
446 | if (do_undef) { |
b587e6ae |
447 | buf[0] = 0; |
448 | get_name(BADADDR, ea, buf, sizeof(buf)); |
1caf86bb |
449 | msg("%x: undefining '%s'\n", ea, buf); |
450 | do_unknown(ea, DOUNK_EXPAND); |
b587e6ae |
451 | } |
452 | } |
453 | } |
454 | |
455 | // check namelist for reserved names |
456 | n = get_nlist_size(); |
457 | for (i = 0; i < n; i++) { |
458 | ea = get_nlist_ea(i); |
459 | name = get_nlist_name(i); |
460 | if (name == NULL) { |
461 | msg("%x: null name?\n", ea); |
462 | continue; |
463 | } |
464 | |
b25f320a |
465 | // rename vars with '?@' (funcs are ok) |
466 | int change_qat = 0; |
467 | ea_flags = get_flags_novalue(ea); |
468 | if (!isCode(ea_flags) && strpbrk(name, "?@")) |
469 | change_qat = 1; |
470 | |
471 | if (change_qat || is_name_reserved(name)) { |
b587e6ae |
472 | msg("%x: renaming name '%s'\n", ea, name); |
97609f07 |
473 | qsnprintf(buf, sizeof(buf), "%s", name); |
b25f320a |
474 | |
475 | if (change_qat) { |
476 | for (p = buf; *p != 0; p++) { |
477 | if (*p == '?' || *p == '@') { |
478 | qsnprintf(buf2, sizeof(buf2), "%02x", (unsigned char)*p); |
479 | memmove(p + 1, p, strlen(p) + 1); |
480 | memcpy(p, buf2, 2); |
481 | } |
482 | } |
483 | } |
484 | |
97609f07 |
485 | my_rename(ea, buf); |
15c7b2a4 |
486 | } |
487 | } |
488 | |
489 | if (nonlocal_bt_cnt > 1) { |
490 | qsort(nonlocal_bt, nonlocal_bt_cnt, |
491 | sizeof(nonlocal_bt[0]), nonlocal_bt_cmp); |
d8891fcc |
492 | } |
493 | |
494 | char *fname = askfile_c(1, NULL, "Save asm file"); |
495 | if (fname == NULL) |
496 | return; |
497 | fout = qfopen(fname, "w"); |
498 | if (fout == NULL) { |
499 | msg("couldn't open '%s'\n", fname); |
500 | return; |
501 | } |
502 | |
503 | show_wait_box("Saving.."); |
504 | |
505 | // deal with the beginning |
506 | ea = inf.minEA; |
507 | int flags = 0; // calc_default_idaplace_flags(); |
508 | linearray_t ln(&flags); |
509 | idaplace_t pl; |
510 | pl.ea = ea; |
511 | pl.lnnum = 0; |
512 | ln.set_place(&pl); |
513 | n = ln.get_linecnt(); |
514 | for (i = 0; i < n - 1; i++) { |
d53d4cc7 |
515 | do_def_line(buf, sizeof(buf), ln.down(), ea); |
d8891fcc |
516 | if (strstr(buf, "include")) |
517 | continue; |
518 | |
519 | fout_line++; |
520 | qfprintf(fout, "%s\n", buf); |
521 | p = strstr(buf, ".mmx"); |
522 | if (p != NULL) { |
523 | memcpy(p, ".xmm", 4); |
524 | fout_line++; |
525 | qfprintf(fout, "%s\n", buf); |
1402b79d |
526 | continue; |
527 | } |
528 | p = strstr(buf, ".model"); |
529 | if (p != NULL) { |
530 | qstrncpy(p, "include imports.inc", sizeof(buf) - (p - buf)); |
531 | fout_line++; |
532 | qfprintf(fout, "\n%s\n", buf); |
de8a204c |
533 | i++; |
534 | break; |
d8891fcc |
535 | } |
536 | } |
b587e6ae |
537 | pl.lnnum = i; |
d8891fcc |
538 | |
539 | for (;;) |
540 | { |
94cd6e34 |
541 | int drop_large = 0, do_rva = 0, set_scale = 0, jmp_near = 0; |
ed6ebb48 |
542 | int word_imm = 0, dword_imm = 0, do_pushf = 0, do_nops = 0; |
15c7b2a4 |
543 | |
d8891fcc |
544 | if ((ea >> 14) != ui_ea_block) { |
545 | ui_ea_block = ea >> 14; |
546 | showAddr(ea); |
547 | if (wasBreak()) |
548 | break; |
549 | } |
550 | |
551 | segment_t *seg = getseg(ea); |
b587e6ae |
552 | if (!seg || (seg->type != SEG_CODE && seg->type != SEG_DATA)) |
d8891fcc |
553 | goto pass; |
554 | |
b587e6ae |
555 | ea_flags = get_flags_novalue(ea); |
556 | if (isCode(ea_flags)) |
557 | { |
558 | if (!decode_insn(ea)) |
559 | goto pass; |
d8891fcc |
560 | |
1caf86bb |
561 | if (is_insn_jmp(cmd.itype) && cmd.Operands[0].type == o_near |
562 | && cmd.Operands[0].dtyp == dt_dword) |
563 | { |
564 | jmp_near = 1; |
565 | } |
566 | else if ((cmd.itype == NN_pushf || cmd.itype == NN_popf) |
567 | && natop()) |
568 | { |
569 | do_pushf = 1; |
570 | } |
571 | |
b587e6ae |
572 | for (o = 0; o < UA_MAXOP; o++) { |
1caf86bb |
573 | const op_t &opr = cmd.Operands[o]; |
574 | if (opr.type == o_void) |
b587e6ae |
575 | break; |
d8891fcc |
576 | |
1caf86bb |
577 | // correct? |
578 | if (opr.type == o_mem && opr.specval_shorts.high == 0x21) |
b587e6ae |
579 | drop_large = 1; |
1caf86bb |
580 | if (opr.hasSIB && x86_scale(opr) == 0 |
581 | && x86_index(opr) != INDEX_NONE) |
582 | { |
583 | set_scale = 1; |
584 | } |
585 | // annoying alignment variant.. |
586 | if (opr.type == o_imm && opr.dtyp == dt_dword |
587 | && (opr.value < 0x80 || opr.value > 0xffffff80) |
588 | && cmd.size >= opr.offb + 4) |
589 | { |
590 | if (get_long(ea + opr.offb) == opr.value) |
591 | dword_imm = 1; |
592 | } |
593 | else if (opr.type == o_imm && opr.dtyp == dt_word |
594 | && (opr.value < 0x80 || opr.value > 0xff80) |
595 | && cmd.size >= opr.offb + 2) |
596 | { |
597 | if (get_word(ea + opr.offb) == (ushort)opr.value) |
598 | word_imm = 1; |
15c7b2a4 |
599 | } |
ed6ebb48 |
600 | else if (opr.type == o_displ && opr.addr == 0 |
601 | && opr.offb != 0 && opr.hasSIB && opr.sib == 0x24) |
602 | { |
603 | // uses [esp+0] with 0 encoded into op |
604 | do_nops++; |
605 | } |
15c7b2a4 |
606 | } |
b587e6ae |
607 | } |
608 | else { // not code |
609 | if (isOff0(ea_flags)) |
94cd6e34 |
610 | do_rva = 1; |
d8891fcc |
611 | } |
612 | |
613 | pass: |
b587e6ae |
614 | n = ln.get_linecnt(); |
615 | for (i = pl.lnnum; i < n; i++) { |
d53d4cc7 |
616 | do_def_line(buf, sizeof(buf), ln.down(), ea); |
15c7b2a4 |
617 | |
1402b79d |
618 | char *fw; |
619 | for (fw = buf; *fw != 0 && *fw == ' '; ) |
620 | fw++; |
621 | |
1caf86bb |
622 | // patches.. |
b587e6ae |
623 | if (drop_large) { |
1402b79d |
624 | p = strstr(fw, "large "); |
b587e6ae |
625 | if (p != NULL) |
626 | memmove(p, p + 6, strlen(p + 6) + 1); |
627 | } |
94cd6e34 |
628 | while (do_rva) { |
1402b79d |
629 | p = strstr(fw, " rva "); |
b587e6ae |
630 | if (p == NULL) |
631 | break; |
94cd6e34 |
632 | memmove(p + 4 + 3, p + 4, strlen(p + 4) + 1); |
633 | memcpy(p + 1, "offset", 6); |
b587e6ae |
634 | } |
1caf86bb |
635 | if (set_scale) { |
1402b79d |
636 | p = strchr(fw, '['); |
1caf86bb |
637 | if (p != NULL) |
638 | p = strchr(p, '+'); |
639 | if (p != NULL && p[1] == 'e') { |
640 | p += 4; |
641 | // scale is 1, must specify it explicitly so that |
642 | // masm chooses the right scaled reg |
643 | memmove(p + 2, p, strlen(p) + 1); |
644 | memcpy(p, "*1", 2); |
645 | } |
646 | } |
647 | else if (jmp_near) { |
9aaf1dcf |
648 | p = NULL; |
649 | if (fw != buf && fw[0] == 'j') |
650 | p = fw; |
1caf86bb |
651 | while (p && *p != ' ') |
652 | p++; |
653 | while (p && *p == ' ') |
654 | p++; |
655 | if (p != NULL) { |
656 | memmove(p + 9, p, strlen(p) + 1); |
657 | memcpy(p, "near ptr ", 9); |
9aaf1dcf |
658 | jmp_near = 0; |
1caf86bb |
659 | } |
660 | } |
661 | if (word_imm) { |
1402b79d |
662 | p = strstr(fw, ", "); |
1caf86bb |
663 | if (p != NULL && '0' <= p[2] && p[2] <= '9') { |
664 | p += 2; |
665 | memmove(p + 9, p, strlen(p) + 1); |
666 | memcpy(p, "word ptr ", 9); |
667 | } |
668 | } |
669 | else if (dword_imm) { |
1402b79d |
670 | p = strstr(fw, ", "); |
1caf86bb |
671 | if (p != NULL && '0' <= p[2] && p[2] <= '9') { |
672 | p += 2; |
673 | memmove(p + 10, p, strlen(p) + 1); |
674 | memcpy(p, "dword ptr ", 10); |
675 | } |
676 | } |
677 | else if (do_pushf) { |
1402b79d |
678 | p = strstr(fw, "pushf"); |
1caf86bb |
679 | if (p == NULL) |
1402b79d |
680 | p = strstr(fw, "popf"); |
1caf86bb |
681 | if (p != NULL) { |
682 | p = strchr(p, 'f') + 1; |
683 | memmove(p + 1, p, strlen(p) + 1); |
684 | *p = 'd'; |
685 | } |
686 | } |
b587e6ae |
687 | |
de8a204c |
688 | if (fw[0] == 'a' && IS_START(fw, "assume cs")) { |
689 | // "assume cs" causes problems with ext syms |
690 | memmove(fw + 1, fw, strlen(fw) + 1); |
691 | *fw = ';'; |
692 | } |
693 | else if (fw[0] == 'e' && IS_START(fw, "end") && fw[3] == ' ') { |
1402b79d |
694 | fout_line++; |
695 | qfprintf(fout, "include public.inc\n\n"); |
696 | |
697 | // kill entry point |
698 | fw[3] = 0; |
699 | } |
700 | |
b587e6ae |
701 | fout_line++; |
702 | qfprintf(fout, "%s\n", buf); |
703 | } |
d8891fcc |
704 | |
ed6ebb48 |
705 | while (do_nops-- > 0) |
706 | qfprintf(fout, " nop ; adj\n"); |
707 | |
15c7b2a4 |
708 | // note: next_head skips some undefined stuff |
d8891fcc |
709 | ea = next_not_tail(ea); // correct? |
15c7b2a4 |
710 | if (ea == BADADDR) |
d8891fcc |
711 | break; |
712 | |
713 | pl.ea = ea; |
714 | pl.lnnum = 0; |
715 | ln.set_place(&pl); |
d8891fcc |
716 | } |
717 | |
718 | if (fout != NULL) |
719 | qfclose(fout); |
15c7b2a4 |
720 | if (fname != NULL) |
721 | qfree(fname); |
d8891fcc |
722 | |
723 | hide_wait_box(); |
724 | msg("%d lines saved.\n", fout_line); |
725 | } |
726 | |
727 | //-------------------------------------------------------------------------- |
728 | |
3682b4b1 |
729 | static const char comment[] = "Generate disassembly for nasm"; |
d8891fcc |
730 | static const char help[] = "Generate asm file\n"; |
731 | static const char wanted_name[] = "Save asm"; |
3682b4b1 |
732 | static const char wanted_hotkey[] = "Shift-S"; |
d8891fcc |
733 | |
734 | //-------------------------------------------------------------------------- |
735 | // |
736 | // PLUGIN DESCRIPTION BLOCK |
737 | // |
738 | //-------------------------------------------------------------------------- |
739 | plugin_t PLUGIN = |
740 | { |
741 | IDP_INTERFACE_VERSION, |
742 | 0, // plugin flags |
743 | init, // initialize |
744 | term, // terminate. this pointer may be NULL. |
745 | run, // invoke plugin |
746 | comment, // long comment about the plugin |
747 | // it could appear in the status line |
748 | // or as a hint |
749 | help, // multiline help about the plugin |
750 | wanted_name, // the preferred short name of the plugin |
751 | wanted_hotkey // the preferred hotkey to run the plugin |
752 | }; |
753 | |
754 | // vim:ts=2:shiftwidth=2:expandtab |