be516ebe |
1 | /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
2 | * Mupen64plus/PCSX - assem_arm64.c * |
3 | * Copyright (C) 2009-2011 Ari64 * |
d1e4ebd9 |
4 | * Copyright (C) 2009-2018 Gillou68310 * |
5 | * Copyright (C) 2021 notaz * |
be516ebe |
6 | * * |
7 | * This program is free software; you can redistribute it and/or modify * |
8 | * it under the terms of the GNU General Public License as published by * |
9 | * the Free Software Foundation; either version 2 of the License, or * |
10 | * (at your option) any later version. * |
11 | * * |
12 | * This program is distributed in the hope that it will be useful, * |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
15 | * GNU General Public License for more details. * |
16 | * * |
17 | * You should have received a copy of the GNU General Public License * |
18 | * along with this program; if not, write to the * |
19 | * Free Software Foundation, Inc., * |
20 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * |
21 | * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ |
22 | |
3968e69e |
23 | #include "pcnt.h" |
be516ebe |
24 | #include "arm_features.h" |
25 | |
be516ebe |
26 | #define CALLER_SAVE_REGS 0x0007ffff |
27 | |
28 | #define unused __attribute__((unused)) |
29 | |
d1e4ebd9 |
30 | void do_memhandler_pre(); |
31 | void do_memhandler_post(); |
be516ebe |
32 | |
33 | /* Linker */ |
d1e4ebd9 |
34 | static void set_jump_target(void *addr, void *target) |
be516ebe |
35 | { |
d1e4ebd9 |
36 | u_int *ptr = addr; |
37 | intptr_t offset = (u_char *)target - (u_char *)addr; |
38 | |
3968e69e |
39 | if ((*ptr&0xFC000000) == 0x14000000) { // b |
d1e4ebd9 |
40 | assert(offset>=-134217728LL&&offset<134217728LL); |
41 | *ptr=(*ptr&0xFC000000)|((offset>>2)&0x3ffffff); |
42 | } |
3968e69e |
43 | else if ((*ptr&0xff000000) == 0x54000000 // b.cond |
44 | || (*ptr&0x7e000000) == 0x34000000) { // cbz/cbnz |
d1e4ebd9 |
45 | // Conditional branch are limited to +/- 1MB |
46 | // block max size is 256k so branching beyond the +/- 1MB limit |
47 | // should only happen when jumping to an already compiled block (see add_link) |
48 | // a workaround would be to do a trampoline jump via a stub at the end of the block |
3968e69e |
49 | assert(-1048576 <= offset && offset < 1048576); |
d1e4ebd9 |
50 | *ptr=(*ptr&0xFF00000F)|(((offset>>2)&0x7ffff)<<5); |
51 | } |
3968e69e |
52 | else if((*ptr&0x9f000000)==0x10000000) { // adr |
d1e4ebd9 |
53 | // generated by do_miniht_insert |
54 | assert(offset>=-1048576LL&&offset<1048576LL); |
55 | *ptr=(*ptr&0x9F00001F)|(offset&0x3)<<29|((offset>>2)&0x7ffff)<<5; |
56 | } |
57 | else |
3968e69e |
58 | abort(); // should not happen |
be516ebe |
59 | } |
60 | |
61 | // from a pointer to external jump stub (which was produced by emit_extjump2) |
62 | // find where the jumping insn is |
63 | static void *find_extjump_insn(void *stub) |
64 | { |
d1e4ebd9 |
65 | int *ptr = (int *)stub + 2; |
66 | assert((*ptr&0x9f000000) == 0x10000000); // adr |
67 | int offset = (((signed int)(*ptr<<8)>>13)<<2)|((*ptr>>29)&0x3); |
68 | return ptr + offset / 4; |
be516ebe |
69 | } |
70 | |
71 | // find where external branch is liked to using addr of it's stub: |
3968e69e |
72 | // get address that the stub loads (dyna_linker arg1), |
be516ebe |
73 | // treat it as a pointer to branch insn, |
74 | // return addr where that branch jumps to |
75 | static void *get_pointer(void *stub) |
76 | { |
d1e4ebd9 |
77 | int *i_ptr = find_extjump_insn(stub); |
3968e69e |
78 | if ((*i_ptr&0xfc000000) == 0x14000000) // b |
79 | return i_ptr + ((signed int)(*i_ptr<<6)>>6); |
80 | if ((*i_ptr&0xff000000) == 0x54000000 // b.cond |
81 | || (*i_ptr&0x7e000000) == 0x34000000) // cbz/cbnz |
82 | return i_ptr + ((signed int)(*i_ptr<<8)>>13); |
be516ebe |
83 | assert(0); |
84 | return NULL; |
85 | } |
86 | |
be516ebe |
87 | // Allocate a specific ARM register. |
88 | static void alloc_arm_reg(struct regstat *cur,int i,signed char reg,int hr) |
89 | { |
90 | int n; |
91 | int dirty=0; |
92 | |
93 | // see if it's already allocated (and dealloc it) |
94 | for(n=0;n<HOST_REGS;n++) |
95 | { |
96 | if(n!=EXCLUDE_REG&&cur->regmap[n]==reg) { |
97 | dirty=(cur->dirty>>n)&1; |
98 | cur->regmap[n]=-1; |
99 | } |
100 | } |
101 | |
102 | cur->regmap[hr]=reg; |
103 | cur->dirty&=~(1<<hr); |
104 | cur->dirty|=dirty<<hr; |
105 | cur->isconst&=~(1<<hr); |
106 | } |
107 | |
108 | // Alloc cycle count into dedicated register |
109 | static void alloc_cc(struct regstat *cur,int i) |
110 | { |
111 | alloc_arm_reg(cur,i,CCREG,HOST_CCREG); |
112 | } |
113 | |
114 | /* Special alloc */ |
115 | |
116 | |
117 | /* Assembler */ |
118 | |
119 | static unused const char *regname[32] = { |
d1e4ebd9 |
120 | "w0", "w1", "w2", "w3", "w4", "w5", "w6", "w7", |
121 | "w8", "w9", "w10", "w11", "w12", "w13", "w14", "w15", |
122 | "ip0", "ip1", "w18", "w19", "w20", "w21", "w22", "w23", |
123 | "w24", "w25", "w26", "w27", "w28", "wfp", "wlr", "wsp" |
124 | }; |
125 | |
126 | static unused const char *regname64[32] = { |
127 | "x0", "x1", "x2", "x3", "x4", "x5", "x6", "x7", |
128 | "x8", "x9", "x10", "x11", "x12", "x13", "x14", "x15", |
129 | "ip0", "ip1", "x18", "x19", "x20", "x21", "x22", "x23", |
130 | "x24", "x25", "x26", "x27", "x28", "fp", "lr", "sp" |
131 | }; |
132 | |
133 | enum { |
134 | COND_EQ, COND_NE, COND_CS, COND_CC, COND_MI, COND_PL, COND_VS, COND_VC, |
135 | COND_HI, COND_LS, COND_GE, COND_LT, COND_GT, COND_LE, COND_AW, COND_NV |
136 | }; |
137 | |
138 | static unused const char *condname[16] = { |
139 | "eq", "ne", "cs", "cc", "mi", "pl", "vs", "vc", |
140 | "hi", "ls", "ge", "lt", "gt", "le", "aw", "nv" |
be516ebe |
141 | }; |
142 | |
be516ebe |
143 | static void output_w32(u_int word) |
144 | { |
145 | *((u_int *)out) = word; |
146 | out += 4; |
147 | } |
148 | |
d1e4ebd9 |
149 | static void output_w64(uint64_t dword) |
150 | { |
151 | *((uint64_t *)out) = dword; |
152 | out+=8; |
153 | } |
154 | |
155 | /* |
687b4580 |
156 | static u_int rm_rd(u_int rm, u_int rd) |
157 | { |
158 | assert(rm < 31); |
159 | assert(rd < 31); |
160 | return (rm << 16) | rd; |
161 | } |
d1e4ebd9 |
162 | */ |
687b4580 |
163 | |
3968e69e |
164 | static u_int rn_rd(u_int rn, u_int rd) |
165 | { |
166 | assert(rn < 31); |
167 | assert(rd < 31); |
168 | return (rn << 5) | rd; |
169 | } |
170 | |
be516ebe |
171 | static u_int rm_rn_rd(u_int rm, u_int rn, u_int rd) |
172 | { |
d1e4ebd9 |
173 | assert(rm < 32); |
174 | assert(rn < 32); |
175 | assert(rd < 32); |
be516ebe |
176 | return (rm << 16) | (rn << 5) | rd; |
177 | } |
178 | |
3968e69e |
179 | static u_int rm_ra_rn_rd(u_int rm, u_int ra, u_int rn, u_int rd) |
180 | { |
181 | assert(ra < 32); |
182 | return rm_rn_rd(rm, rn, rd) | (ra << 10); |
183 | } |
184 | |
d1e4ebd9 |
185 | static u_int imm7_rt2_rn_rt(u_int imm7, u_int rt2, u_int rn, u_int rt) |
186 | { |
187 | assert(imm7 < 0x80); |
188 | assert(rt2 < 31); |
189 | assert(rn < 32); |
190 | assert(rt < 31); |
191 | return (imm7 << 15) | (rt2 << 10) | (rn << 5) | rt; |
192 | } |
193 | |
687b4580 |
194 | static u_int rm_imm6_rn_rd(u_int rm, u_int imm6, u_int rn, u_int rd) |
195 | { |
196 | assert(imm6 <= 63); |
197 | return rm_rn_rd(rm, rn, rd) | (imm6 << 10); |
198 | } |
199 | |
be516ebe |
200 | static u_int imm16_rd(u_int imm16, u_int rd) |
201 | { |
202 | assert(imm16 < 0x10000); |
203 | assert(rd < 31); |
204 | return (imm16 << 5) | rd; |
205 | } |
206 | |
687b4580 |
207 | static u_int imm12_rn_rd(u_int imm12, u_int rn, u_int rd) |
208 | { |
209 | assert(imm12 < 0x1000); |
d1e4ebd9 |
210 | assert(rn < 32); |
211 | assert(rd < 32); |
212 | return (imm12 << 10) | (rn << 5) | rd; |
213 | } |
214 | |
215 | static u_int imm9_rn_rt(u_int imm9, u_int rn, u_int rd) |
216 | { |
217 | assert(imm9 < 0x200); |
687b4580 |
218 | assert(rn < 31); |
219 | assert(rd < 31); |
d1e4ebd9 |
220 | return (imm9 << 12) | (rn << 5) | rd; |
687b4580 |
221 | } |
222 | |
d1e4ebd9 |
223 | static u_int imm19_rt(u_int imm19, u_int rt) |
224 | { |
225 | assert(imm19 < 0x80000); |
226 | assert(rt < 31); |
227 | return (imm19 << 5) | rt; |
228 | } |
229 | |
230 | static u_int n_immr_imms_rn_rd(u_int n, u_int immr, u_int imms, u_int rn, u_int rd) |
231 | { |
232 | assert(n < 2); |
233 | assert(immr < 0x40); |
234 | assert(imms < 0x40); |
235 | assert(rn < 32); |
236 | assert(rd < 32); |
237 | return (n << 22) | (immr << 16) | (imms << 10) | (rn << 5) | rd; |
238 | } |
239 | |
240 | static u_int genjmp(const u_char *addr) |
be516ebe |
241 | { |
242 | intptr_t offset = addr - out; |
d1e4ebd9 |
243 | if ((uintptr_t)addr < 3) return 0; // a branch that will be patched later |
be516ebe |
244 | if (offset < -134217728 || offset > 134217727) { |
d1e4ebd9 |
245 | SysPrintf("%s: out of range: %p %lx\n", __func__, addr, offset); |
246 | abort(); |
be516ebe |
247 | return 0; |
248 | } |
d1e4ebd9 |
249 | return ((u_int)offset >> 2) & 0x03ffffff; |
be516ebe |
250 | } |
251 | |
d1e4ebd9 |
252 | static u_int genjmpcc(const u_char *addr) |
be516ebe |
253 | { |
254 | intptr_t offset = addr - out; |
d1e4ebd9 |
255 | if ((uintptr_t)addr < 3) return 0; |
be516ebe |
256 | if (offset < -1048576 || offset > 1048572) { |
d1e4ebd9 |
257 | SysPrintf("%s: out of range: %p %lx\n", __func__, addr, offset); |
258 | abort(); |
259 | return 0; |
260 | } |
261 | return ((u_int)offset >> 2) & 0x7ffff; |
262 | } |
263 | |
264 | static uint32_t is_mask(u_int value) |
265 | { |
266 | return value && ((value + 1) & value) == 0; |
267 | } |
268 | |
269 | // This function returns true if the argument contains a |
270 | // non-empty sequence of ones (possibly rotated) with the remainder zero. |
271 | static uint32_t is_rotated_mask(u_int value) |
272 | { |
3968e69e |
273 | if (value == 0 || value == ~0) |
be516ebe |
274 | return 0; |
d1e4ebd9 |
275 | if (is_mask((value - 1) | value)) |
276 | return 1; |
277 | return is_mask((~value - 1) | ~value); |
278 | } |
279 | |
280 | static void gen_logical_imm(u_int value, u_int *immr, u_int *imms) |
281 | { |
282 | int lzeros, tzeros, ones; |
283 | assert(value != 0); |
284 | if (is_mask((value - 1) | value)) { |
285 | lzeros = __builtin_clz(value); |
286 | tzeros = __builtin_ctz(value); |
287 | ones = 32 - lzeros - tzeros; |
288 | *immr = (32 - tzeros) & 31; |
289 | *imms = ones - 1; |
290 | return; |
be516ebe |
291 | } |
d1e4ebd9 |
292 | value = ~value; |
293 | if (is_mask((value - 1) | value)) { |
294 | lzeros = __builtin_clz(value); |
295 | tzeros = __builtin_ctz(value); |
296 | ones = 32 - lzeros - tzeros; |
3968e69e |
297 | *immr = lzeros; |
d1e4ebd9 |
298 | *imms = 31 - ones; |
299 | return; |
300 | } |
3968e69e |
301 | abort(); |
be516ebe |
302 | } |
303 | |
304 | static void emit_mov(u_int rs, u_int rt) |
305 | { |
687b4580 |
306 | assem_debug("mov %s,%s\n", regname[rt], regname[rs]); |
d1e4ebd9 |
307 | output_w32(0x2a000000 | rm_rn_rd(rs, WZR, rt)); |
308 | } |
309 | |
310 | static void emit_mov64(u_int rs, u_int rt) |
311 | { |
312 | assem_debug("mov %s,%s\n", regname64[rt], regname64[rs]); |
313 | output_w32(0xaa000000 | rm_rn_rd(rs, WZR, rt)); |
be516ebe |
314 | } |
315 | |
687b4580 |
316 | static void emit_add(u_int rs1, u_int rs2, u_int rt) |
be516ebe |
317 | { |
d1e4ebd9 |
318 | assem_debug("add %s,%s,%s\n", regname[rt], regname[rs1], regname[rs2]); |
319 | output_w32(0x0b000000 | rm_rn_rd(rs2, rs1, rt)); |
be516ebe |
320 | } |
321 | |
d1e4ebd9 |
322 | static void emit_add64(u_int rs1, u_int rs2, u_int rt) |
be516ebe |
323 | { |
d1e4ebd9 |
324 | assem_debug("add %s,%s,%s\n", regname64[rt], regname64[rs1], regname64[rs2]); |
325 | output_w32(0x8b000000 | rm_rn_rd(rs2, rs1, rt)); |
be516ebe |
326 | } |
327 | |
d1e4ebd9 |
328 | static void emit_adds64(u_int rs1, u_int rs2, u_int rt) |
be516ebe |
329 | { |
3968e69e |
330 | assem_debug("adds %s,%s,%s\n",regname64[rt],regname64[rs1],regname64[rs2]); |
d1e4ebd9 |
331 | output_w32(0xab000000 | rm_rn_rd(rs2, rs1, rt)); |
332 | } |
333 | |
334 | static void emit_neg(u_int rs, u_int rt) |
335 | { |
336 | assem_debug("neg %s,%s\n",regname[rt],regname[rs]); |
337 | output_w32(0x4b000000 | rm_rn_rd(rs, WZR, rt)); |
be516ebe |
338 | } |
339 | |
687b4580 |
340 | static void emit_sub(u_int rs1, u_int rs2, u_int rt) |
be516ebe |
341 | { |
d1e4ebd9 |
342 | assem_debug("sub %s,%s,%s\n", regname[rt], regname[rs1], regname[rs2]); |
687b4580 |
343 | output_w32(0x4b000000 | rm_imm6_rn_rd(rs2, 0, rs1, rt)); |
be516ebe |
344 | } |
345 | |
3968e69e |
346 | static void emit_sub_asrimm(u_int rs1, u_int rs2, u_int shift, u_int rt) |
347 | { |
348 | assem_debug("sub %s,%s,%s,asr #%u\n",regname[rt],regname[rs1],regname[rs2],shift); |
349 | output_w32(0x4b800000 | rm_imm6_rn_rd(rs2, shift, rs1, rt)); |
350 | } |
351 | |
d1e4ebd9 |
352 | static void emit_movz(u_int imm, u_int rt) |
be516ebe |
353 | { |
d1e4ebd9 |
354 | assem_debug("movz %s,#%#x\n", regname[rt], imm); |
355 | output_w32(0x52800000 | imm16_rd(imm, rt)); |
356 | } |
357 | |
358 | static void emit_movz_lsl16(u_int imm, u_int rt) |
359 | { |
360 | assem_debug("movz %s,#%#x,lsl #16\n", regname[rt], imm); |
361 | output_w32(0x52a00000 | imm16_rd(imm, rt)); |
362 | } |
363 | |
364 | static void emit_movn(u_int imm, u_int rt) |
365 | { |
366 | assem_debug("movn %s,#%#x\n", regname[rt], imm); |
367 | output_w32(0x12800000 | imm16_rd(imm, rt)); |
368 | } |
369 | |
370 | static void emit_movn_lsl16(u_int imm,u_int rt) |
371 | { |
372 | assem_debug("movn %s,#%#x,lsl #16\n", regname[rt], imm); |
373 | output_w32(0x12a00000 | imm16_rd(imm, rt)); |
374 | } |
375 | |
376 | static void emit_movk(u_int imm,u_int rt) |
377 | { |
378 | assem_debug("movk %s,#%#x\n", regname[rt], imm); |
379 | output_w32(0x72800000 | imm16_rd(imm, rt)); |
380 | } |
381 | |
382 | static void emit_movk_lsl16(u_int imm,u_int rt) |
383 | { |
384 | assert(imm<65536); |
3968e69e |
385 | assem_debug("movk %s,#%#x,lsl #16\n", regname[rt], imm); |
d1e4ebd9 |
386 | output_w32(0x72a00000 | imm16_rd(imm, rt)); |
be516ebe |
387 | } |
388 | |
389 | static void emit_zeroreg(u_int rt) |
390 | { |
d1e4ebd9 |
391 | emit_movz(0, rt); |
be516ebe |
392 | } |
393 | |
be516ebe |
394 | static void emit_movimm(u_int imm, u_int rt) |
395 | { |
d1e4ebd9 |
396 | if (imm < 65536) |
397 | emit_movz(imm, rt); |
398 | else if ((~imm) < 65536) |
399 | emit_movn(~imm, rt); |
400 | else if ((imm&0xffff) == 0) |
401 | emit_movz_lsl16(imm >> 16, rt); |
402 | else if (((~imm)&0xffff) == 0) |
403 | emit_movn_lsl16(~imm >> 16, rt); |
404 | else if (is_rotated_mask(imm)) { |
405 | u_int immr, imms; |
406 | gen_logical_imm(imm, &immr, &imms); |
407 | assem_debug("orr %s,wzr,#%#x\n", regname[rt], imm); |
408 | output_w32(0x32000000 | n_immr_imms_rn_rd(0, immr, imms, WZR, rt)); |
409 | } |
be516ebe |
410 | else { |
d1e4ebd9 |
411 | emit_movz(imm & 0xffff, rt); |
412 | emit_movk_lsl16(imm >> 16, rt); |
be516ebe |
413 | } |
414 | } |
415 | |
687b4580 |
416 | static void emit_readword(void *addr, u_int rt) |
417 | { |
418 | uintptr_t offset = (u_char *)addr - (u_char *)&dynarec_local; |
419 | if (!(offset & 3) && offset <= 16380) { |
420 | assem_debug("ldr %s,[x%d+%#lx]\n", regname[rt], FP, offset); |
421 | output_w32(0xb9400000 | imm12_rn_rd(offset >> 2, FP, rt)); |
422 | } |
423 | else |
3968e69e |
424 | abort(); |
687b4580 |
425 | } |
426 | |
d1e4ebd9 |
427 | static void emit_readdword(void *addr, u_int rt) |
428 | { |
429 | uintptr_t offset = (u_char *)addr - (u_char *)&dynarec_local; |
430 | if (!(offset & 7) && offset <= 32760) { |
431 | assem_debug("ldr %s,[x%d+%#lx]\n", regname64[rt], FP, offset); |
432 | output_w32(0xf9400000 | imm12_rn_rd(offset >> 3, FP, rt)); |
433 | } |
3968e69e |
434 | else |
435 | abort(); |
436 | } |
437 | |
438 | static void emit_readshword(void *addr, u_int rt) |
439 | { |
440 | uintptr_t offset = (u_char *)addr - (u_char *)&dynarec_local; |
441 | if (!(offset & 1) && offset <= 8190) { |
442 | assem_debug("ldrsh %s,[x%d+%#lx]\n", regname[rt], FP, offset); |
443 | output_w32(0x79c00000 | imm12_rn_rd(offset >> 1, FP, rt)); |
444 | } |
d1e4ebd9 |
445 | else |
446 | assert(0); |
447 | } |
448 | |
be516ebe |
449 | static void emit_loadreg(u_int r, u_int hr) |
450 | { |
d1e4ebd9 |
451 | int is64 = 0; |
be516ebe |
452 | assert(r < 64); |
453 | if (r == 0) |
454 | emit_zeroreg(hr); |
455 | else { |
7c3a5182 |
456 | void *addr = &psxRegs.GPR.r[r]; |
be516ebe |
457 | switch (r) { |
7c3a5182 |
458 | //case HIREG: addr = &hi; break; |
459 | //case LOREG: addr = &lo; break; |
be516ebe |
460 | case CCREG: addr = &cycle_count; break; |
461 | case CSREG: addr = &Status; break; |
d1e4ebd9 |
462 | case INVCP: addr = &invc_ptr; is64 = 1; break; |
7c3a5182 |
463 | default: assert(r < 34); break; |
be516ebe |
464 | } |
d1e4ebd9 |
465 | if (is64) |
466 | emit_readdword(addr, hr); |
467 | else |
468 | emit_readword(addr, hr); |
be516ebe |
469 | } |
470 | } |
471 | |
687b4580 |
472 | static void emit_writeword(u_int rt, void *addr) |
473 | { |
474 | uintptr_t offset = (u_char *)addr - (u_char *)&dynarec_local; |
475 | if (!(offset & 3) && offset <= 16380) { |
476 | assem_debug("str %s,[x%d+%#lx]\n", regname[rt], FP, offset); |
477 | output_w32(0xb9000000 | imm12_rn_rd(offset >> 2, FP, rt)); |
478 | } |
479 | else |
480 | assert(0); |
481 | } |
482 | |
d1e4ebd9 |
483 | static void emit_writedword(u_int rt, void *addr) |
484 | { |
485 | uintptr_t offset = (u_char *)addr - (u_char *)&dynarec_local; |
486 | if (!(offset & 7) && offset <= 32760) { |
487 | assem_debug("str %s,[x%d+%#lx]\n", regname64[rt], FP, offset); |
3968e69e |
488 | output_w32(0xf9000000 | imm12_rn_rd(offset >> 3, FP, rt)); |
d1e4ebd9 |
489 | } |
490 | else |
3968e69e |
491 | abort(); |
d1e4ebd9 |
492 | } |
493 | |
687b4580 |
494 | static void emit_storereg(u_int r, u_int hr) |
be516ebe |
495 | { |
496 | assert(r < 64); |
7c3a5182 |
497 | void *addr = &psxRegs.GPR.r[r]; |
be516ebe |
498 | switch (r) { |
7c3a5182 |
499 | //case HIREG: addr = &hi; break; |
500 | //case LOREG: addr = &lo; break; |
be516ebe |
501 | case CCREG: addr = &cycle_count; break; |
7c3a5182 |
502 | default: assert(r < 34); break; |
be516ebe |
503 | } |
687b4580 |
504 | emit_writeword(hr, addr); |
be516ebe |
505 | } |
506 | |
507 | static void emit_test(u_int rs, u_int rt) |
508 | { |
d1e4ebd9 |
509 | assem_debug("tst %s,%s\n", regname[rs], regname[rt]); |
510 | output_w32(0x6a000000 | rm_rn_rd(rt, rs, WZR)); |
be516ebe |
511 | } |
512 | |
d1e4ebd9 |
513 | static void emit_testimm(u_int rs, u_int imm) |
be516ebe |
514 | { |
d1e4ebd9 |
515 | u_int immr, imms; |
687b4580 |
516 | assem_debug("tst %s,#%#x\n", regname[rs], imm); |
d1e4ebd9 |
517 | assert(is_rotated_mask(imm)); // good enough for PCSX |
518 | gen_logical_imm(imm, &immr, &imms); |
3968e69e |
519 | output_w32(0x72000000 | n_immr_imms_rn_rd(0, immr, imms, rs, WZR)); |
be516ebe |
520 | } |
521 | |
522 | static void emit_not(u_int rs,u_int rt) |
523 | { |
524 | assem_debug("mvn %s,%s\n",regname[rt],regname[rs]); |
d1e4ebd9 |
525 | output_w32(0x2a200000 | rm_rn_rd(rs, WZR, rt)); |
be516ebe |
526 | } |
527 | |
be516ebe |
528 | static void emit_and(u_int rs1,u_int rs2,u_int rt) |
529 | { |
530 | assem_debug("and %s,%s,%s\n",regname[rt],regname[rs1],regname[rs2]); |
d1e4ebd9 |
531 | output_w32(0x0a000000 | rm_rn_rd(rs2, rs1, rt)); |
be516ebe |
532 | } |
533 | |
534 | static void emit_or(u_int rs1,u_int rs2,u_int rt) |
535 | { |
536 | assem_debug("orr %s,%s,%s\n",regname[rt],regname[rs1],regname[rs2]); |
d1e4ebd9 |
537 | output_w32(0x2a000000 | rm_rn_rd(rs2, rs1, rt)); |
be516ebe |
538 | } |
539 | |
3968e69e |
540 | static void emit_bic(u_int rs1,u_int rs2,u_int rt) |
541 | { |
542 | assem_debug("bic %s,%s,%s\n",regname[rt],regname[rs1],regname[rs2]); |
543 | output_w32(0x0a200000 | rm_rn_rd(rs2, rs1, rt)); |
544 | } |
545 | |
be516ebe |
546 | static void emit_orrshl_imm(u_int rs,u_int imm,u_int rt) |
547 | { |
be516ebe |
548 | assem_debug("orr %s,%s,%s,lsl #%d\n",regname[rt],regname[rt],regname[rs],imm); |
d1e4ebd9 |
549 | output_w32(0x2a000000 | rm_imm6_rn_rd(rs, imm, rt, rt)); |
be516ebe |
550 | } |
551 | |
552 | static void emit_orrshr_imm(u_int rs,u_int imm,u_int rt) |
553 | { |
be516ebe |
554 | assem_debug("orr %s,%s,%s,lsr #%d\n",regname[rt],regname[rt],regname[rs],imm); |
d1e4ebd9 |
555 | output_w32(0x2a400000 | rm_imm6_rn_rd(rs, imm, rt, rt)); |
be516ebe |
556 | } |
557 | |
3968e69e |
558 | static void emit_bicsar_imm(u_int rs,u_int imm,u_int rt) |
559 | { |
560 | assem_debug("bic %s,%s,%s,asr #%d\n",regname[rt],regname[rt],regname[rs],imm); |
561 | output_w32(0x0aa00000 | rm_imm6_rn_rd(rs, imm, rt, rt)); |
562 | } |
563 | |
be516ebe |
564 | static void emit_xor(u_int rs1,u_int rs2,u_int rt) |
565 | { |
566 | assem_debug("eor %s,%s,%s\n",regname[rt],regname[rs1],regname[rs2]); |
d1e4ebd9 |
567 | output_w32(0x4a000000 | rm_rn_rd(rs2, rs1, rt)); |
be516ebe |
568 | } |
569 | |
3968e69e |
570 | static void emit_xorsar_imm(u_int rs1, u_int rs2, u_int imm, u_int rt) |
571 | { |
572 | assem_debug("eor %s,%s,%s,asr #%d\n",regname[rt],regname[rs1],regname[rs2],imm); |
573 | output_w32(0x4a800000 | rm_imm6_rn_rd(rs2, imm, rs1, rt)); |
574 | } |
575 | |
d1e4ebd9 |
576 | static void emit_addimm_s(u_int s, u_int is64, u_int rs, uintptr_t imm, u_int rt) |
be516ebe |
577 | { |
d1e4ebd9 |
578 | unused const char *st = s ? "s" : ""; |
579 | s = s ? 0x20000000 : 0; |
580 | is64 = is64 ? 0x80000000 : 0; |
687b4580 |
581 | if (imm < 4096) { |
d1e4ebd9 |
582 | assem_debug("add%s %s,%s,%#lx\n", st, regname[rt], regname[rs], imm); |
583 | output_w32(0x11000000 | is64 | s | imm12_rn_rd(imm, rs, rt)); |
687b4580 |
584 | } |
585 | else if (-imm < 4096) { |
3968e69e |
586 | assem_debug("sub%s %s,%s,%#lx\n", st, regname[rt], regname[rs], -imm); |
d1e4ebd9 |
587 | output_w32(0x51000000 | is64 | s | imm12_rn_rd(-imm, rs, rt)); |
588 | } |
589 | else if (imm < 16777216) { |
590 | assem_debug("add %s,%s,#%#lx\n",regname[rt],regname[rt],imm&0xfff000); |
591 | output_w32(0x11400000 | is64 | imm12_rn_rd(imm >> 12, rs, rt)); |
592 | if ((imm & 0xfff) || s) { |
593 | assem_debug("add%s %s,%s,#%#lx\n",st,regname[rt],regname[rs],imm&0xfff); |
3968e69e |
594 | output_w32(0x11000000 | is64 | s | imm12_rn_rd(imm & 0xfff, rt, rt)); |
d1e4ebd9 |
595 | } |
596 | } |
597 | else if (-imm < 16777216) { |
598 | assem_debug("sub %s,%s,#%#lx\n",regname[rt],regname[rt],-imm&0xfff000); |
599 | output_w32(0x51400000 | is64 | imm12_rn_rd(-imm >> 12, rs, rt)); |
600 | if ((imm & 0xfff) || s) { |
601 | assem_debug("sub%s %s,%s,#%#lx\n",st,regname[rt],regname[rs],-imm&0xfff); |
602 | output_w32(0x51000000 | is64 | s | imm12_rn_rd(-imm & 0xfff, rt, rt)); |
603 | } |
687b4580 |
604 | } |
605 | else |
3968e69e |
606 | abort(); |
be516ebe |
607 | } |
608 | |
d1e4ebd9 |
609 | static void emit_addimm(u_int rs, uintptr_t imm, u_int rt) |
610 | { |
611 | emit_addimm_s(0, 0, rs, imm, rt); |
612 | } |
613 | |
614 | static void emit_addimm64(u_int rs, uintptr_t imm, u_int rt) |
615 | { |
616 | emit_addimm_s(0, 1, rs, imm, rt); |
617 | } |
618 | |
be516ebe |
619 | static void emit_addimm_and_set_flags(int imm, u_int rt) |
620 | { |
d1e4ebd9 |
621 | emit_addimm_s(1, 0, rt, imm, rt); |
be516ebe |
622 | } |
623 | |
624 | static void emit_addimm_no_flags(u_int imm,u_int rt) |
625 | { |
626 | emit_addimm(rt,imm,rt); |
627 | } |
628 | |
d1e4ebd9 |
629 | static void emit_logicop_imm(u_int op, u_int rs, u_int imm, u_int rt) |
be516ebe |
630 | { |
d1e4ebd9 |
631 | const char *names[] = { "and", "orr", "eor", "ands" }; |
632 | const char *name = names[op]; |
633 | u_int immr, imms; |
634 | op = op << 29; |
635 | if (is_rotated_mask(imm)) { |
636 | gen_logical_imm(imm, &immr, &imms); |
637 | assem_debug("%s %s,%s,#%#x\n", name, regname[rt], regname[rs], imm); |
638 | output_w32(op | 0x12000000 | n_immr_imms_rn_rd(0, immr, imms, rs, rt)); |
639 | } |
640 | else { |
641 | if (rs == HOST_TEMPREG || rt != HOST_TEMPREG) |
642 | host_tempreg_acquire(); |
643 | emit_movimm(imm, HOST_TEMPREG); |
644 | assem_debug("%s %s,%s,%s\n", name, regname[rt], regname[rs], regname[HOST_TEMPREG]); |
645 | output_w32(op | 0x0a000000 | rm_rn_rd(HOST_TEMPREG, rs, rt)); |
646 | if (rs == HOST_TEMPREG || rt != HOST_TEMPREG) |
647 | host_tempreg_release(); |
648 | } |
649 | (void)name; |
be516ebe |
650 | } |
651 | |
d1e4ebd9 |
652 | static void emit_andimm(u_int rs, u_int imm, u_int rt) |
be516ebe |
653 | { |
d1e4ebd9 |
654 | if (imm == 0) |
655 | emit_zeroreg(rt); |
656 | else |
657 | emit_logicop_imm(0, rs, imm, rt); |
be516ebe |
658 | } |
659 | |
d1e4ebd9 |
660 | static void emit_orimm(u_int rs, u_int imm, u_int rt) |
be516ebe |
661 | { |
d1e4ebd9 |
662 | if (imm == 0) { |
663 | if (rs != rt) |
664 | emit_mov(rs, rt); |
665 | } |
666 | else |
667 | emit_logicop_imm(1, rs, imm, rt); |
be516ebe |
668 | } |
669 | |
d1e4ebd9 |
670 | static void emit_xorimm(u_int rs, u_int imm, u_int rt) |
be516ebe |
671 | { |
d1e4ebd9 |
672 | if (imm == 0) { |
673 | if (rs != rt) |
674 | emit_mov(rs, rt); |
675 | } |
676 | else |
677 | emit_logicop_imm(2, rs, imm, rt); |
be516ebe |
678 | } |
679 | |
d1e4ebd9 |
680 | static void emit_sbfm(u_int rs,u_int imm,u_int rt) |
be516ebe |
681 | { |
d1e4ebd9 |
682 | assem_debug("sbfm %s,%s,#0,#%d\n",regname[rt],regname[rs],imm); |
683 | output_w32(0x13000000 | n_immr_imms_rn_rd(0, 0, imm, rs, rt)); |
be516ebe |
684 | } |
685 | |
d1e4ebd9 |
686 | static void emit_ubfm(u_int rs,u_int imm,u_int rt) |
be516ebe |
687 | { |
d1e4ebd9 |
688 | assem_debug("ubfm %s,%s,#0,#%d\n",regname[rt],regname[rs],imm); |
689 | output_w32(0x53000000 | n_immr_imms_rn_rd(0, 0, imm, rs, rt)); |
be516ebe |
690 | } |
691 | |
692 | static void emit_shlimm(u_int rs,u_int imm,u_int rt) |
693 | { |
be516ebe |
694 | assem_debug("lsl %s,%s,#%d\n",regname[rt],regname[rs],imm); |
d1e4ebd9 |
695 | output_w32(0x53000000 | n_immr_imms_rn_rd(0, (31-imm)+1, 31-imm, rs, rt)); |
be516ebe |
696 | } |
697 | |
3968e69e |
698 | static void emit_shrimm(u_int rs,u_int imm,u_int rt) |
be516ebe |
699 | { |
3968e69e |
700 | assem_debug("lsr %s,%s,#%d\n",regname[rt],regname[rs],imm); |
701 | output_w32(0x53000000 | n_immr_imms_rn_rd(0, imm, 31, rs, rt)); |
be516ebe |
702 | } |
703 | |
3968e69e |
704 | static void emit_shrimm64(u_int rs,u_int imm,u_int rt) |
be516ebe |
705 | { |
be516ebe |
706 | assem_debug("lsr %s,%s,#%d\n",regname[rt],regname[rs],imm); |
3968e69e |
707 | output_w32(0xd3400000 | n_immr_imms_rn_rd(0, imm, 63, rs, rt)); |
be516ebe |
708 | } |
709 | |
710 | static void emit_sarimm(u_int rs,u_int imm,u_int rt) |
711 | { |
be516ebe |
712 | assem_debug("asr %s,%s,#%d\n",regname[rt],regname[rs],imm); |
d1e4ebd9 |
713 | output_w32(0x13000000 | n_immr_imms_rn_rd(0, imm, 31, rs, rt)); |
be516ebe |
714 | } |
715 | |
716 | static void emit_rorimm(u_int rs,u_int imm,u_int rt) |
717 | { |
3968e69e |
718 | assem_debug("ror %s,%s,#%d\n",regname[rt],regname[rs],imm); |
d1e4ebd9 |
719 | output_w32(0x13800000 | rm_imm6_rn_rd(rs, imm, rs, rt)); |
be516ebe |
720 | } |
721 | |
722 | static void emit_signextend16(u_int rs, u_int rt) |
723 | { |
724 | assem_debug("sxth %s,%s\n", regname[rt], regname[rs]); |
d1e4ebd9 |
725 | output_w32(0x13000000 | n_immr_imms_rn_rd(0, 0, 15, rs, rt)); |
be516ebe |
726 | } |
727 | |
d1e4ebd9 |
728 | static void emit_shl(u_int rs,u_int rshift,u_int rt) |
be516ebe |
729 | { |
3968e69e |
730 | assem_debug("lsl %s,%s,%s\n",regname[rt],regname[rs],regname[rshift]); |
d1e4ebd9 |
731 | output_w32(0x1ac02000 | rm_rn_rd(rshift, rs, rt)); |
be516ebe |
732 | } |
733 | |
d1e4ebd9 |
734 | static void emit_shr(u_int rs,u_int rshift,u_int rt) |
be516ebe |
735 | { |
d1e4ebd9 |
736 | assem_debug("lsr %s,%s,%s\n",regname[rt],regname[rs],regname[rshift]); |
737 | output_w32(0x1ac02400 | rm_rn_rd(rshift, rs, rt)); |
be516ebe |
738 | } |
739 | |
d1e4ebd9 |
740 | static void emit_sar(u_int rs,u_int rshift,u_int rt) |
be516ebe |
741 | { |
d1e4ebd9 |
742 | assem_debug("asr %s,%s,%s\n",regname[rt],regname[rs],regname[rshift]); |
743 | output_w32(0x1ac02800 | rm_rn_rd(rshift, rs, rt)); |
be516ebe |
744 | } |
745 | |
d1e4ebd9 |
746 | static void emit_cmpimm(u_int rs, u_int imm) |
be516ebe |
747 | { |
d1e4ebd9 |
748 | if (imm < 4096) { |
749 | assem_debug("cmp %s,%#x\n", regname[rs], imm); |
750 | output_w32(0x71000000 | imm12_rn_rd(imm, rs, WZR)); |
751 | } |
752 | else if (-imm < 4096) { |
753 | assem_debug("cmn %s,%#x\n", regname[rs], imm); |
754 | output_w32(0x31000000 | imm12_rn_rd(-imm, rs, WZR)); |
755 | } |
756 | else if (imm < 16777216 && !(imm & 0xfff)) { |
3968e69e |
757 | assem_debug("cmp %s,#%#x\n", regname[rs], imm); |
d1e4ebd9 |
758 | output_w32(0x71400000 | imm12_rn_rd(imm >> 12, rs, WZR)); |
759 | } |
760 | else { |
761 | host_tempreg_acquire(); |
762 | emit_movimm(imm, HOST_TEMPREG); |
763 | assem_debug("cmp %s,%s\n", regname[rs], regname[HOST_TEMPREG]); |
764 | output_w32(0x6b000000 | rm_rn_rd(HOST_TEMPREG, rs, WZR)); |
765 | host_tempreg_release(); |
766 | } |
be516ebe |
767 | } |
768 | |
d1e4ebd9 |
769 | static void emit_cmov_imm(u_int cond0, u_int cond1, u_int imm, u_int rt) |
be516ebe |
770 | { |
d1e4ebd9 |
771 | assert(imm == 0 || imm == 1); |
772 | assert(cond0 < 0x10); |
773 | assert(cond1 < 0x10); |
774 | if (imm) { |
775 | assem_debug("csinc %s,%s,%s,%s\n",regname[rt],regname[rt],regname[WZR],condname[cond1]); |
776 | output_w32(0x1a800400 | (cond1 << 12) | rm_rn_rd(WZR, rt, rt)); |
777 | } else { |
778 | assem_debug("csel %s,%s,%s,%s\n",regname[rt],regname[WZR],regname[rt],condname[cond0]); |
779 | output_w32(0x1a800000 | (cond0 << 12) | rm_rn_rd(rt, WZR, rt)); |
780 | } |
be516ebe |
781 | } |
782 | |
d1e4ebd9 |
783 | static void emit_cmovne_imm(u_int imm,u_int rt) |
be516ebe |
784 | { |
d1e4ebd9 |
785 | emit_cmov_imm(COND_NE, COND_EQ, imm, rt); |
be516ebe |
786 | } |
787 | |
d1e4ebd9 |
788 | static void emit_cmovl_imm(u_int imm,u_int rt) |
be516ebe |
789 | { |
d1e4ebd9 |
790 | emit_cmov_imm(COND_LT, COND_GE, imm, rt); |
be516ebe |
791 | } |
792 | |
793 | static void emit_cmovb_imm(int imm,u_int rt) |
794 | { |
d1e4ebd9 |
795 | emit_cmov_imm(COND_CC, COND_CS, imm, rt); |
be516ebe |
796 | } |
797 | |
3968e69e |
798 | static void emit_cmoveq_reg(u_int rs,u_int rt) |
be516ebe |
799 | { |
3968e69e |
800 | assem_debug("csel %s,%s,%s,eq\n",regname[rt],regname[rs],regname[rt]); |
801 | output_w32(0x1a800000 | (COND_EQ << 12) | rm_rn_rd(rt, rs, rt)); |
be516ebe |
802 | } |
803 | |
804 | static void emit_cmovne_reg(u_int rs,u_int rt) |
805 | { |
d1e4ebd9 |
806 | assem_debug("csel %s,%s,%s,ne\n",regname[rt],regname[rs],regname[rt]); |
807 | output_w32(0x1a800000 | (COND_NE << 12) | rm_rn_rd(rt, rs, rt)); |
be516ebe |
808 | } |
809 | |
810 | static void emit_cmovl_reg(u_int rs,u_int rt) |
811 | { |
d1e4ebd9 |
812 | assem_debug("csel %s,%s,%s,lt\n",regname[rt],regname[rs],regname[rt]); |
813 | output_w32(0x1a800000 | (COND_LT << 12) | rm_rn_rd(rt, rs, rt)); |
be516ebe |
814 | } |
815 | |
816 | static void emit_cmovs_reg(u_int rs,u_int rt) |
817 | { |
d1e4ebd9 |
818 | assem_debug("csel %s,%s,%s,mi\n",regname[rt],regname[rs],regname[rt]); |
819 | output_w32(0x1a800000 | (COND_MI << 12) | rm_rn_rd(rt, rs, rt)); |
be516ebe |
820 | } |
821 | |
3968e69e |
822 | static void emit_csinvle_reg(u_int rs1,u_int rs2,u_int rt) |
823 | { |
824 | assem_debug("csinv %s,%s,%s,le\n",regname[rt],regname[rs1],regname[rs2]); |
825 | output_w32(0x5a800000 | (COND_LE << 12) | rm_rn_rd(rs2, rs1, rt)); |
826 | } |
827 | |
be516ebe |
828 | static void emit_slti32(u_int rs,int imm,u_int rt) |
829 | { |
830 | if(rs!=rt) emit_zeroreg(rt); |
831 | emit_cmpimm(rs,imm); |
832 | if(rs==rt) emit_movimm(0,rt); |
833 | emit_cmovl_imm(1,rt); |
834 | } |
835 | |
836 | static void emit_sltiu32(u_int rs,int imm,u_int rt) |
837 | { |
838 | if(rs!=rt) emit_zeroreg(rt); |
839 | emit_cmpimm(rs,imm); |
840 | if(rs==rt) emit_movimm(0,rt); |
841 | emit_cmovb_imm(1,rt); |
842 | } |
843 | |
844 | static void emit_cmp(u_int rs,u_int rt) |
845 | { |
846 | assem_debug("cmp %s,%s\n",regname[rs],regname[rt]); |
d1e4ebd9 |
847 | output_w32(0x6b000000 | rm_rn_rd(rt, rs, WZR)); |
be516ebe |
848 | } |
849 | |
850 | static void emit_set_gz32(u_int rs, u_int rt) |
851 | { |
852 | //assem_debug("set_gz32\n"); |
853 | emit_cmpimm(rs,1); |
854 | emit_movimm(1,rt); |
855 | emit_cmovl_imm(0,rt); |
856 | } |
857 | |
858 | static void emit_set_nz32(u_int rs, u_int rt) |
859 | { |
860 | //assem_debug("set_nz32\n"); |
d1e4ebd9 |
861 | if(rs!=rt) emit_mov(rs,rt); |
862 | emit_test(rs,rs); |
863 | emit_cmovne_imm(1,rt); |
be516ebe |
864 | } |
865 | |
866 | static void emit_set_if_less32(u_int rs1, u_int rs2, u_int rt) |
867 | { |
868 | //assem_debug("set if less (%%%s,%%%s),%%%s\n",regname[rs1],regname[rs2],regname[rt]); |
869 | if(rs1!=rt&&rs2!=rt) emit_zeroreg(rt); |
870 | emit_cmp(rs1,rs2); |
871 | if(rs1==rt||rs2==rt) emit_movimm(0,rt); |
872 | emit_cmovl_imm(1,rt); |
873 | } |
874 | |
875 | static void emit_set_if_carry32(u_int rs1, u_int rs2, u_int rt) |
876 | { |
877 | //assem_debug("set if carry (%%%s,%%%s),%%%s\n",regname[rs1],regname[rs2],regname[rt]); |
878 | if(rs1!=rt&&rs2!=rt) emit_zeroreg(rt); |
879 | emit_cmp(rs1,rs2); |
880 | if(rs1==rt||rs2==rt) emit_movimm(0,rt); |
881 | emit_cmovb_imm(1,rt); |
882 | } |
883 | |
2a014d73 |
884 | static int can_jump_or_call(const void *a) |
885 | { |
886 | intptr_t diff = (u_char *)a - out; |
887 | return (-134217728 <= diff && diff <= 134217727); |
888 | } |
889 | |
d1e4ebd9 |
890 | static void emit_call(const void *a) |
be516ebe |
891 | { |
d1e4ebd9 |
892 | intptr_t diff = (u_char *)a - out; |
893 | assem_debug("bl %p (%p+%lx)%s\n", a, out, diff, func_name(a)); |
687b4580 |
894 | assert(!(diff & 3)); |
895 | if (-134217728 <= diff && diff <= 134217727) |
896 | output_w32(0x94000000 | ((diff >> 2) & 0x03ffffff)); |
897 | else |
3968e69e |
898 | abort(); |
be516ebe |
899 | } |
900 | |
d1e4ebd9 |
901 | static void emit_jmp(const void *a) |
be516ebe |
902 | { |
d1e4ebd9 |
903 | assem_debug("b %p (%p+%lx)%s\n", a, out, (u_char *)a - out, func_name(a)); |
904 | u_int offset = genjmp(a); |
905 | output_w32(0x14000000 | offset); |
be516ebe |
906 | } |
907 | |
d1e4ebd9 |
908 | static void emit_jne(const void *a) |
be516ebe |
909 | { |
d1e4ebd9 |
910 | assem_debug("bne %p\n", a); |
911 | u_int offset = genjmpcc(a); |
912 | output_w32(0x54000000 | (offset << 5) | COND_NE); |
be516ebe |
913 | } |
914 | |
7c3a5182 |
915 | static void emit_jeq(const void *a) |
be516ebe |
916 | { |
d1e4ebd9 |
917 | assem_debug("beq %p\n", a); |
918 | u_int offset = genjmpcc(a); |
919 | output_w32(0x54000000 | (offset << 5) | COND_EQ); |
be516ebe |
920 | } |
921 | |
7c3a5182 |
922 | static void emit_js(const void *a) |
be516ebe |
923 | { |
d1e4ebd9 |
924 | assem_debug("bmi %p\n", a); |
925 | u_int offset = genjmpcc(a); |
926 | output_w32(0x54000000 | (offset << 5) | COND_MI); |
be516ebe |
927 | } |
928 | |
7c3a5182 |
929 | static void emit_jns(const void *a) |
be516ebe |
930 | { |
d1e4ebd9 |
931 | assem_debug("bpl %p\n", a); |
932 | u_int offset = genjmpcc(a); |
933 | output_w32(0x54000000 | (offset << 5) | COND_PL); |
be516ebe |
934 | } |
935 | |
7c3a5182 |
936 | static void emit_jl(const void *a) |
be516ebe |
937 | { |
d1e4ebd9 |
938 | assem_debug("blt %p\n", a); |
939 | u_int offset = genjmpcc(a); |
940 | output_w32(0x54000000 | (offset << 5) | COND_LT); |
be516ebe |
941 | } |
942 | |
7c3a5182 |
943 | static void emit_jge(const void *a) |
be516ebe |
944 | { |
d1e4ebd9 |
945 | assem_debug("bge %p\n", a); |
946 | u_int offset = genjmpcc(a); |
947 | output_w32(0x54000000 | (offset << 5) | COND_GE); |
be516ebe |
948 | } |
949 | |
7c3a5182 |
950 | static void emit_jno(const void *a) |
be516ebe |
951 | { |
d1e4ebd9 |
952 | assem_debug("bvc %p\n", a); |
953 | u_int offset = genjmpcc(a); |
954 | output_w32(0x54000000 | (offset << 5) | COND_VC); |
be516ebe |
955 | } |
956 | |
7c3a5182 |
957 | static void emit_jc(const void *a) |
be516ebe |
958 | { |
d1e4ebd9 |
959 | assem_debug("bcs %p\n", a); |
960 | u_int offset = genjmpcc(a); |
961 | output_w32(0x54000000 | (offset << 5) | COND_CS); |
be516ebe |
962 | } |
963 | |
3968e69e |
964 | static void emit_cb(u_int isnz, u_int is64, const void *a, u_int r) |
be516ebe |
965 | { |
3968e69e |
966 | assem_debug("cb%sz %s,%p\n", isnz?"n":"", is64?regname64[r]:regname[r], a); |
d1e4ebd9 |
967 | u_int offset = genjmpcc(a); |
3968e69e |
968 | is64 = is64 ? 0x80000000 : 0; |
969 | isnz = isnz ? 0x01000000 : 0; |
970 | output_w32(0x34000000 | is64 | isnz | imm19_rt(offset, r)); |
971 | } |
972 | |
973 | static void emit_cbz(const void *a, u_int r) |
974 | { |
975 | emit_cb(0, 0, a, r); |
be516ebe |
976 | } |
977 | |
978 | static void emit_jmpreg(u_int r) |
979 | { |
3968e69e |
980 | assem_debug("br %s\n", regname64[r]); |
d1e4ebd9 |
981 | output_w32(0xd61f0000 | rm_rn_rd(0, r, 0)); |
be516ebe |
982 | } |
983 | |
984 | static void emit_retreg(u_int r) |
985 | { |
d1e4ebd9 |
986 | assem_debug("ret %s\n", r == LR ? "" : regname64[r]); |
be516ebe |
987 | output_w32(0xd65f0000 | rm_rn_rd(0, r, 0)); |
988 | } |
989 | |
990 | static void emit_ret(void) |
991 | { |
992 | emit_retreg(LR); |
993 | } |
994 | |
d1e4ebd9 |
995 | static void emit_adr(void *addr, u_int rt) |
996 | { |
997 | intptr_t offset = (u_char *)addr - out; |
998 | assert(-1048576 <= offset && offset < 1048576); |
3968e69e |
999 | assert(rt < 31); |
d1e4ebd9 |
1000 | assem_debug("adr x%d,#%#lx\n", rt, offset); |
1001 | output_w32(0x10000000 | ((offset&0x3) << 29) | (((offset>>2)&0x7ffff) << 5) | rt); |
1002 | } |
1003 | |
3968e69e |
1004 | static void emit_adrp(void *addr, u_int rt) |
1005 | { |
1006 | intptr_t offset = ((intptr_t)addr & ~0xfffl) - ((intptr_t)out & ~0xfffl); |
1007 | assert(-4294967296l <= offset && offset < 4294967296l); |
1008 | assert(rt < 31); |
1009 | offset >>= 12; |
1010 | assem_debug("adrp %s,#%#lx(000)\n",regname64[rt],offset); |
1011 | output_w32(0x90000000 | ((offset&0x3)<<29) | (((offset>>2)&0x7ffff)<<5) | rt); |
1012 | } |
1013 | |
be516ebe |
1014 | static void emit_readword_indexed(int offset, u_int rs, u_int rt) |
1015 | { |
d1e4ebd9 |
1016 | assem_debug("ldur %s,[%s+%#x]\n",regname[rt],regname64[rs],offset); |
1017 | assert(-256 <= offset && offset < 256); |
1018 | output_w32(0xb8400000 | imm9_rn_rt(offset&0x1ff, rs, rt)); |
1019 | } |
1020 | |
1021 | static void emit_strb_dualindexed(u_int rs1, u_int rs2, u_int rt) |
1022 | { |
1023 | assem_debug("strb %s, [%s,%s]\n",regname[rt],regname64[rs1],regname[rs2]); |
1024 | output_w32(0x38204800 | rm_rn_rd(rs2, rs1, rt)); |
1025 | } |
1026 | |
1027 | static void emit_strh_dualindexed(u_int rs1, u_int rs2, u_int rt) |
1028 | { |
1029 | assem_debug("strh %s, [%s,%s]\n",regname[rt],regname64[rs1],regname[rs2]); |
1030 | output_w32(0x78204800 | rm_rn_rd(rs2, rs1, rt)); |
1031 | } |
1032 | |
1033 | static void emit_str_dualindexed(u_int rs1, u_int rs2, u_int rt) |
1034 | { |
1035 | assem_debug("str %s, [%s,%s]\n",regname[rt],regname64[rs1],regname[rs2]); |
1036 | output_w32(0xb8204800 | rm_rn_rd(rs2, rs1, rt)); |
1037 | } |
1038 | |
1039 | static void emit_readdword_dualindexedx8(u_int rs1, u_int rs2, u_int rt) |
1040 | { |
1041 | assem_debug("ldr %s, [%s,%s, uxtw #3]\n",regname64[rt],regname64[rs1],regname[rs2]); |
1042 | output_w32(0xf8605800 | rm_rn_rd(rs2, rs1, rt)); |
1043 | } |
1044 | |
1045 | static void emit_ldrb_dualindexed(u_int rs1, u_int rs2, u_int rt) |
1046 | { |
1047 | assem_debug("ldrb %s, [%s,%s]\n",regname[rt],regname64[rs1],regname[rs2]); |
1048 | output_w32(0x38604800 | rm_rn_rd(rs2, rs1, rt)); |
1049 | } |
1050 | |
1051 | static void emit_ldrsb_dualindexed(u_int rs1, u_int rs2, u_int rt) |
1052 | { |
1053 | assem_debug("ldrsb %s, [%s,%s]\n",regname[rt],regname64[rs1],regname[rs2]); |
1054 | output_w32(0x38a04800 | rm_rn_rd(rs2, rs1, rt)); |
1055 | } |
1056 | |
1057 | static void emit_ldrh_dualindexed(u_int rs1, u_int rs2, u_int rt) |
1058 | { |
1059 | assem_debug("ldrh %s, [%s,%s, uxtw]\n",regname[rt],regname64[rs1],regname[rs2]); |
1060 | output_w32(0x78604800 | rm_rn_rd(rs2, rs1, rt)); |
1061 | } |
1062 | |
1063 | static void emit_ldrsh_dualindexed(u_int rs1, u_int rs2, u_int rt) |
1064 | { |
1065 | assem_debug("ldrsh %s, [%s,%s, uxtw]\n",regname[rt],regname64[rs1],regname[rs2]); |
1066 | output_w32(0x78a04800 | rm_rn_rd(rs2, rs1, rt)); |
1067 | } |
1068 | |
1069 | static void emit_ldr_dualindexed(u_int rs1, u_int rs2, u_int rt) |
1070 | { |
1071 | assem_debug("ldr %s, [%s,%s, uxtw]\n",regname[rt],regname64[rs1],regname[rs2]); |
1072 | output_w32(0xb8604800 | rm_rn_rd(rs2, rs1, rt)); |
be516ebe |
1073 | } |
1074 | |
be516ebe |
1075 | static void emit_movsbl_indexed(int offset, u_int rs, u_int rt) |
1076 | { |
d1e4ebd9 |
1077 | assem_debug("ldursb %s,[%s+%#x]\n",regname[rt],regname64[rs],offset); |
1078 | assert(-256 <= offset && offset < 256); |
1079 | output_w32(0x38c00000 | imm9_rn_rt(offset&0x1ff, rs, rt)); |
be516ebe |
1080 | } |
1081 | |
1082 | static void emit_movswl_indexed(int offset, u_int rs, u_int rt) |
1083 | { |
d1e4ebd9 |
1084 | assem_debug("ldursh %s,[%s+%#x]\n",regname[rt],regname64[rs],offset); |
1085 | assert(-256 <= offset && offset < 256); |
1086 | output_w32(0x78c00000 | imm9_rn_rt(offset&0x1ff, rs, rt)); |
be516ebe |
1087 | } |
1088 | |
1089 | static void emit_movzbl_indexed(int offset, u_int rs, u_int rt) |
1090 | { |
d1e4ebd9 |
1091 | assem_debug("ldurb %s,[%s+%#x]\n",regname[rt],regname64[rs],offset); |
1092 | assert(-256 <= offset && offset < 256); |
1093 | output_w32(0x38400000 | imm9_rn_rt(offset&0x1ff, rs, rt)); |
be516ebe |
1094 | } |
1095 | |
1096 | static void emit_movzwl_indexed(int offset, u_int rs, u_int rt) |
1097 | { |
d1e4ebd9 |
1098 | assem_debug("ldurh %s,[%s+%#x]\n",regname[rt],regname64[rs],offset); |
1099 | assert(-256 <= offset && offset < 256); |
1100 | output_w32(0x78400000 | imm9_rn_rt(offset&0x1ff, rs, rt)); |
be516ebe |
1101 | } |
1102 | |
be516ebe |
1103 | static void emit_writeword_indexed(u_int rt, int offset, u_int rs) |
1104 | { |
3968e69e |
1105 | if (!(offset & 3) && (u_int)offset <= 16380) { |
1106 | assem_debug("str %s,[%s+%#x]\n", regname[rt], regname[rs], offset); |
687b4580 |
1107 | output_w32(0xb9000000 | imm12_rn_rd(offset >> 2, rs, rt)); |
3968e69e |
1108 | } |
1109 | else if (-256 <= offset && offset < 256) { |
1110 | assem_debug("stur %s,[%s+%#x]\n", regname[rt], regname[rs], offset); |
1111 | output_w32(0xb8000000 | imm9_rn_rt(offset & 0x1ff, rs, rt)); |
1112 | } |
687b4580 |
1113 | else |
1114 | assert(0); |
be516ebe |
1115 | } |
1116 | |
1117 | static void emit_writehword_indexed(u_int rt, int offset, u_int rs) |
1118 | { |
3968e69e |
1119 | if (!(offset & 1) && (u_int)offset <= 8190) { |
1120 | assem_debug("strh %s,[%s+%#x]\n", regname[rt], regname64[rs], offset); |
687b4580 |
1121 | output_w32(0x79000000 | imm12_rn_rd(offset >> 1, rs, rt)); |
3968e69e |
1122 | } |
1123 | else if (-256 <= offset && offset < 256) { |
1124 | assem_debug("sturh %s,[%s+%#x]\n", regname[rt], regname64[rs], offset); |
1125 | output_w32(0x78000000 | imm9_rn_rt(offset & 0x1ff, rs, rt)); |
1126 | } |
687b4580 |
1127 | else |
1128 | assert(0); |
be516ebe |
1129 | } |
1130 | |
1131 | static void emit_writebyte_indexed(u_int rt, int offset, u_int rs) |
1132 | { |
3968e69e |
1133 | if ((u_int)offset < 4096) { |
1134 | assem_debug("strb %s,[%s+%#x]\n", regname[rt], regname64[rs], offset); |
687b4580 |
1135 | output_w32(0x39000000 | imm12_rn_rd(offset, rs, rt)); |
3968e69e |
1136 | } |
1137 | else if (-256 <= offset && offset < 256) { |
1138 | assem_debug("sturb %s,[%s+%#x]\n", regname[rt], regname64[rs], offset); |
1139 | output_w32(0x38000000 | imm9_rn_rt(offset & 0x1ff, rs, rt)); |
1140 | } |
687b4580 |
1141 | else |
1142 | assert(0); |
be516ebe |
1143 | } |
1144 | |
3968e69e |
1145 | static void emit_umull(u_int rs1, u_int rs2, u_int rt) |
be516ebe |
1146 | { |
3968e69e |
1147 | assem_debug("umull %s,%s,%s\n",regname64[rt],regname[rs1],regname[rs2]); |
1148 | output_w32(0x9ba00000 | rm_ra_rn_rd(rs2, WZR, rs1, rt)); |
be516ebe |
1149 | } |
1150 | |
3968e69e |
1151 | static void emit_smull(u_int rs1, u_int rs2, u_int rt) |
be516ebe |
1152 | { |
3968e69e |
1153 | assem_debug("smull %s,%s,%s\n",regname64[rt],regname[rs1],regname[rs2]); |
1154 | output_w32(0x9b200000 | rm_ra_rn_rd(rs2, WZR, rs1, rt)); |
1155 | } |
1156 | |
1157 | static void emit_msub(u_int rs1, u_int rs2, u_int rs3, u_int rt) |
1158 | { |
1159 | assem_debug("msub %s,%s,%s,%s\n",regname[rt],regname[rs1],regname[rs2],regname[rs3]); |
1160 | output_w32(0x1b008000 | rm_ra_rn_rd(rs2, rs3, rs1, rt)); |
1161 | } |
1162 | |
1163 | static void emit_sdiv(u_int rs1, u_int rs2, u_int rt) |
1164 | { |
1165 | assem_debug("sdiv %s,%s,%s\n",regname[rt],regname[rs1],regname[rs2]); |
1166 | output_w32(0x1ac00c00 | rm_rn_rd(rs2, rs1, rt)); |
be516ebe |
1167 | } |
1168 | |
3968e69e |
1169 | static void emit_udiv(u_int rs1, u_int rs2, u_int rt) |
1170 | { |
1171 | assem_debug("udiv %s,%s,%s\n",regname[rt],regname[rs1],regname[rs2]); |
1172 | output_w32(0x1ac00800 | rm_rn_rd(rs2, rs1, rt)); |
1173 | } |
1174 | |
1175 | static void emit_clz(u_int rs, u_int rt) |
be516ebe |
1176 | { |
1177 | assem_debug("clz %s,%s\n",regname[rt],regname[rs]); |
3968e69e |
1178 | output_w32(0x5ac01000 | rn_rd(rs, rt)); |
be516ebe |
1179 | } |
1180 | |
be516ebe |
1181 | // special case for checking invalid_code |
d1e4ebd9 |
1182 | static void emit_cmpmem_indexedsr12_reg(u_int rbase, u_int r, u_int imm) |
be516ebe |
1183 | { |
d1e4ebd9 |
1184 | host_tempreg_acquire(); |
1185 | emit_shrimm(r, 12, HOST_TEMPREG); |
3968e69e |
1186 | assem_debug("ldrb %s,[%s,%s,uxtw]\n",regname[HOST_TEMPREG],regname64[rbase],regname[HOST_TEMPREG]); |
1187 | output_w32(0x38604800 | rm_rn_rd(HOST_TEMPREG, rbase, HOST_TEMPREG)); |
d1e4ebd9 |
1188 | emit_cmpimm(HOST_TEMPREG, imm); |
1189 | host_tempreg_release(); |
be516ebe |
1190 | } |
1191 | |
3968e69e |
1192 | // special for loadlr_assemble, rs2 is destroyed |
1193 | static void emit_bic_lsl(u_int rs1,u_int rs2,u_int shift,u_int rt) |
be516ebe |
1194 | { |
3968e69e |
1195 | emit_shl(rs2, shift, rs2); |
1196 | emit_bic(rs1, rs2, rt); |
be516ebe |
1197 | } |
1198 | |
3968e69e |
1199 | static void emit_bic_lsr(u_int rs1,u_int rs2,u_int shift,u_int rt) |
be516ebe |
1200 | { |
3968e69e |
1201 | emit_shr(rs2, shift, rs2); |
1202 | emit_bic(rs1, rs2, rt); |
be516ebe |
1203 | } |
1204 | |
d1e4ebd9 |
1205 | static void emit_loadlp_ofs(u_int ofs, u_int rt) |
1206 | { |
1207 | output_w32(0x58000000 | imm19_rt(ofs, rt)); |
1208 | } |
1209 | |
687b4580 |
1210 | static void emit_ldst(int is_st, int is64, u_int rt, u_int rn, u_int ofs) |
be516ebe |
1211 | { |
687b4580 |
1212 | u_int op = 0xb9000000; |
d1e4ebd9 |
1213 | unused const char *ldst = is_st ? "st" : "ld"; |
1214 | unused char rp = is64 ? 'x' : 'w'; |
687b4580 |
1215 | assem_debug("%sr %c%d,[x%d,#%#x]\n", ldst, rp, rt, rn, ofs); |
1216 | is64 = is64 ? 1 : 0; |
1217 | assert((ofs & ((1 << (2+is64)) - 1)) == 0); |
1218 | ofs = (ofs >> (2+is64)); |
687b4580 |
1219 | if (!is_st) op |= 0x00400000; |
1220 | if (is64) op |= 0x40000000; |
d1e4ebd9 |
1221 | output_w32(op | imm12_rn_rd(ofs, rn, rt)); |
be516ebe |
1222 | } |
1223 | |
687b4580 |
1224 | static void emit_ldstp(int is_st, int is64, u_int rt1, u_int rt2, u_int rn, int ofs) |
be516ebe |
1225 | { |
687b4580 |
1226 | u_int op = 0x29000000; |
d1e4ebd9 |
1227 | unused const char *ldst = is_st ? "st" : "ld"; |
1228 | unused char rp = is64 ? 'x' : 'w'; |
687b4580 |
1229 | assem_debug("%sp %c%d,%c%d,[x%d,#%#x]\n", ldst, rp, rt1, rp, rt2, rn, ofs); |
1230 | is64 = is64 ? 1 : 0; |
1231 | assert((ofs & ((1 << (2+is64)) - 1)) == 0); |
1232 | ofs = (ofs >> (2+is64)); |
1233 | assert(-64 <= ofs && ofs <= 63); |
1234 | ofs &= 0x7f; |
1235 | if (!is_st) op |= 0x00400000; |
1236 | if (is64) op |= 0x80000000; |
d1e4ebd9 |
1237 | output_w32(op | imm7_rt2_rn_rt(ofs, rt2, rn, rt1)); |
687b4580 |
1238 | } |
1239 | |
1240 | static void save_load_regs_all(int is_store, u_int reglist) |
1241 | { |
1242 | int ofs = 0, c = 0; |
1243 | u_int r, pair[2]; |
1244 | for (r = 0; reglist; r++, reglist >>= 1) { |
1245 | if (reglist & 1) |
1246 | pair[c++] = r; |
1247 | if (c == 2) { |
1248 | emit_ldstp(is_store, 1, pair[0], pair[1], SP, SSP_CALLEE_REGS + ofs); |
1249 | ofs += 8 * 2; |
1250 | c = 0; |
1251 | } |
1252 | } |
1253 | if (c) { |
1254 | emit_ldst(is_store, 1, pair[0], SP, SSP_CALLEE_REGS + ofs); |
1255 | ofs += 8; |
1256 | } |
1257 | assert(ofs <= SSP_CALLER_REGS); |
be516ebe |
1258 | } |
1259 | |
1260 | // Save registers before function call |
1261 | static void save_regs(u_int reglist) |
1262 | { |
1263 | reglist &= CALLER_SAVE_REGS; // only save the caller-save registers |
687b4580 |
1264 | save_load_regs_all(1, reglist); |
be516ebe |
1265 | } |
1266 | |
1267 | // Restore registers after function call |
1268 | static void restore_regs(u_int reglist) |
1269 | { |
1270 | reglist &= CALLER_SAVE_REGS; |
687b4580 |
1271 | save_load_regs_all(0, reglist); |
be516ebe |
1272 | } |
1273 | |
1274 | /* Stubs/epilogue */ |
1275 | |
1276 | static void literal_pool(int n) |
1277 | { |
1278 | (void)literals; |
1279 | } |
1280 | |
1281 | static void literal_pool_jumpover(int n) |
1282 | { |
1283 | } |
1284 | |
d1e4ebd9 |
1285 | // parsed by get_pointer, find_extjump_insn |
1286 | static void emit_extjump2(u_char *addr, u_int target, void *linker) |
be516ebe |
1287 | { |
d1e4ebd9 |
1288 | assert(((addr[3]&0xfc)==0x14) || ((addr[3]&0xff)==0x54)); // b or b.cond |
be516ebe |
1289 | |
d1e4ebd9 |
1290 | emit_movz(target & 0xffff, 0); |
1291 | emit_movk_lsl16(target >> 16, 0); |
1292 | |
1293 | // addr is in the current recompiled block (max 256k) |
1294 | // offset shouldn't exceed +/-1MB |
1295 | emit_adr(addr, 1); |
2a014d73 |
1296 | emit_far_jump(linker); |
be516ebe |
1297 | } |
1298 | |
d1e4ebd9 |
1299 | static void check_extjump2(void *src) |
be516ebe |
1300 | { |
d1e4ebd9 |
1301 | u_int *ptr = src; |
1302 | assert((ptr[0] & 0xffe0001f) == 0x52800000); // movz r0, #val |
1303 | (void)ptr; |
be516ebe |
1304 | } |
1305 | |
1306 | // put rt_val into rt, potentially making use of rs with value rs_val |
d1e4ebd9 |
1307 | static void emit_movimm_from(u_int rs_val, u_int rs, u_int rt_val, u_int rt) |
be516ebe |
1308 | { |
d1e4ebd9 |
1309 | int diff = rt_val - rs_val; |
3968e69e |
1310 | if ((-4096 < diff && diff < 4096) |
1311 | || (-16777216 < diff && diff < 16777216 && !(diff & 0xfff))) |
687b4580 |
1312 | emit_addimm(rs, diff, rt); |
3968e69e |
1313 | else if (rt_val == ~rs_val) |
1314 | emit_not(rs, rt); |
d1e4ebd9 |
1315 | else if (is_rotated_mask(rs_val ^ rt_val)) |
1316 | emit_xorimm(rs, rs_val ^ rt_val, rt); |
687b4580 |
1317 | else |
d1e4ebd9 |
1318 | emit_movimm(rt_val, rt); |
be516ebe |
1319 | } |
1320 | |
d1e4ebd9 |
1321 | // return 1 if the above function can do it's job cheaply |
687b4580 |
1322 | static int is_similar_value(u_int v1, u_int v2) |
be516ebe |
1323 | { |
687b4580 |
1324 | int diff = v1 - v2; |
3968e69e |
1325 | return (-4096 < diff && diff < 4096) |
1326 | || (-16777216 < diff && diff < 16777216 && !(diff & 0xfff)) |
1327 | || v1 == ~v2 |
d1e4ebd9 |
1328 | || is_rotated_mask(v1 ^ v2); |
1329 | } |
1330 | |
1331 | // trashes r2 |
1332 | static void pass_args64(u_int a0, u_int a1) |
1333 | { |
1334 | if(a0==1&&a1==0) { |
1335 | // must swap |
1336 | emit_mov64(a0,2); emit_mov64(a1,1); emit_mov64(2,0); |
1337 | } |
1338 | else if(a0!=0&&a1==0) { |
1339 | emit_mov64(a1,1); |
1340 | if (a0>=0) emit_mov64(a0,0); |
1341 | } |
1342 | else { |
1343 | if(a0>=0&&a0!=0) emit_mov64(a0,0); |
1344 | if(a1>=0&&a1!=1) emit_mov64(a1,1); |
1345 | } |
be516ebe |
1346 | } |
1347 | |
d1e4ebd9 |
1348 | static void loadstore_extend(enum stub_type type, u_int rs, u_int rt) |
1349 | { |
1350 | switch(type) { |
1351 | case LOADB_STUB: emit_sbfm(rs, 7, rt); break; |
1352 | case LOADBU_STUB: |
1353 | case STOREB_STUB: emit_ubfm(rs, 7, rt); break; |
1354 | case LOADH_STUB: emit_sbfm(rs, 15, rt); break; |
1355 | case LOADHU_STUB: |
1356 | case STOREH_STUB: emit_ubfm(rs, 15, rt); break; |
1357 | case LOADW_STUB: |
1358 | case STOREW_STUB: if (rs != rt) emit_mov(rs, rt); break; |
3968e69e |
1359 | default: assert(0); |
d1e4ebd9 |
1360 | } |
1361 | } |
1362 | |
1363 | #include "pcsxmem.h" |
be516ebe |
1364 | //#include "pcsxmem_inline.c" |
1365 | |
1366 | static void do_readstub(int n) |
1367 | { |
1368 | assem_debug("do_readstub %x\n",start+stubs[n].a*4); |
d1e4ebd9 |
1369 | set_jump_target(stubs[n].addr, out); |
1370 | enum stub_type type = stubs[n].type; |
1371 | int i = stubs[n].a; |
1372 | int rs = stubs[n].b; |
1373 | const struct regstat *i_regs = (void *)stubs[n].c; |
1374 | u_int reglist = stubs[n].e; |
1375 | const signed char *i_regmap = i_regs->regmap; |
1376 | int rt; |
1377 | if(itype[i]==C1LS||itype[i]==C2LS||itype[i]==LOADLR) { |
1378 | rt=get_reg(i_regmap,FTEMP); |
1379 | }else{ |
1380 | rt=get_reg(i_regmap,rt1[i]); |
1381 | } |
1382 | assert(rs>=0); |
1383 | int r,temp=-1,temp2=HOST_TEMPREG,regs_saved=0; |
1384 | void *restore_jump = NULL, *handler_jump = NULL; |
1385 | reglist|=(1<<rs); |
1386 | for (r = 0; r < HOST_CCREG; r++) { |
1387 | if (r != EXCLUDE_REG && ((1 << r) & reglist) == 0) { |
1388 | temp = r; |
1389 | break; |
1390 | } |
1391 | } |
1392 | if(rt>=0&&rt1[i]!=0) |
1393 | reglist&=~(1<<rt); |
1394 | if(temp==-1) { |
1395 | save_regs(reglist); |
1396 | regs_saved=1; |
1397 | temp=(rs==0)?2:0; |
1398 | } |
1399 | if((regs_saved||(reglist&2)==0)&&temp!=1&&rs!=1) |
1400 | temp2=1; |
1401 | emit_readdword(&mem_rtab,temp); |
1402 | emit_shrimm(rs,12,temp2); |
1403 | emit_readdword_dualindexedx8(temp,temp2,temp2); |
1404 | emit_adds64(temp2,temp2,temp2); |
1405 | handler_jump=out; |
1406 | emit_jc(0); |
1407 | if(itype[i]==C1LS||itype[i]==C2LS||(rt>=0&&rt1[i]!=0)) { |
1408 | switch(type) { |
1409 | case LOADB_STUB: emit_ldrsb_dualindexed(temp2,rs,rt); break; |
1410 | case LOADBU_STUB: emit_ldrb_dualindexed(temp2,rs,rt); break; |
1411 | case LOADH_STUB: emit_ldrsh_dualindexed(temp2,rs,rt); break; |
1412 | case LOADHU_STUB: emit_ldrh_dualindexed(temp2,rs,rt); break; |
1413 | case LOADW_STUB: emit_ldr_dualindexed(temp2,rs,rt); break; |
3968e69e |
1414 | default: assert(0); |
d1e4ebd9 |
1415 | } |
1416 | } |
1417 | if(regs_saved) { |
1418 | restore_jump=out; |
1419 | emit_jmp(0); // jump to reg restore |
1420 | } |
1421 | else |
1422 | emit_jmp(stubs[n].retaddr); // return address |
1423 | set_jump_target(handler_jump, out); |
1424 | |
1425 | if(!regs_saved) |
1426 | save_regs(reglist); |
1427 | void *handler=NULL; |
1428 | if(type==LOADB_STUB||type==LOADBU_STUB) |
1429 | handler=jump_handler_read8; |
1430 | if(type==LOADH_STUB||type==LOADHU_STUB) |
1431 | handler=jump_handler_read16; |
1432 | if(type==LOADW_STUB) |
1433 | handler=jump_handler_read32; |
1434 | assert(handler); |
1435 | pass_args64(rs,temp2); |
1436 | int cc=get_reg(i_regmap,CCREG); |
1437 | if(cc<0) |
1438 | emit_loadreg(CCREG,2); |
1439 | emit_addimm(cc<0?2:cc,CLOCK_ADJUST((int)stubs[n].d+1),2); |
2a014d73 |
1440 | emit_far_call(handler); |
d1e4ebd9 |
1441 | // (no cycle reload after read) |
1442 | if(itype[i]==C1LS||itype[i]==C2LS||(rt>=0&&rt1[i]!=0)) { |
1443 | loadstore_extend(type,0,rt); |
1444 | } |
1445 | if(restore_jump) |
1446 | set_jump_target(restore_jump, out); |
1447 | restore_regs(reglist); |
1448 | emit_jmp(stubs[n].retaddr); |
be516ebe |
1449 | } |
1450 | |
1451 | static void inline_readstub(enum stub_type type, int i, u_int addr, signed char regmap[], int target, int adj, u_int reglist) |
1452 | { |
d1e4ebd9 |
1453 | int rs=get_reg(regmap,target); |
1454 | int rt=get_reg(regmap,target); |
1455 | if(rs<0) rs=get_reg(regmap,-1); |
1456 | assert(rs>=0); |
1457 | u_int is_dynamic=0; |
1458 | uintptr_t host_addr = 0; |
1459 | void *handler; |
1460 | int cc=get_reg(regmap,CCREG); |
1461 | //if(pcsx_direct_read(type,addr,CLOCK_ADJUST(adj+1),cc,target?rs:-1,rt)) |
1462 | // return; |
1463 | handler = get_direct_memhandler(mem_rtab, addr, type, &host_addr); |
1464 | if (handler == NULL) { |
1465 | if(rt<0||rt1[i]==0) |
1466 | return; |
1467 | if (addr != host_addr) { |
1468 | if (host_addr >= 0x100000000ull) |
1469 | abort(); // ROREG not implemented |
1470 | emit_movimm_from(addr, rs, host_addr, rs); |
1471 | } |
1472 | switch(type) { |
1473 | case LOADB_STUB: emit_movsbl_indexed(0,rs,rt); break; |
1474 | case LOADBU_STUB: emit_movzbl_indexed(0,rs,rt); break; |
1475 | case LOADH_STUB: emit_movswl_indexed(0,rs,rt); break; |
1476 | case LOADHU_STUB: emit_movzwl_indexed(0,rs,rt); break; |
1477 | case LOADW_STUB: emit_readword_indexed(0,rs,rt); break; |
1478 | default: assert(0); |
1479 | } |
1480 | return; |
1481 | } |
1482 | is_dynamic=pcsxmem_is_handler_dynamic(addr); |
1483 | if(is_dynamic) { |
1484 | if(type==LOADB_STUB||type==LOADBU_STUB) |
1485 | handler=jump_handler_read8; |
1486 | if(type==LOADH_STUB||type==LOADHU_STUB) |
1487 | handler=jump_handler_read16; |
1488 | if(type==LOADW_STUB) |
1489 | handler=jump_handler_read32; |
1490 | } |
1491 | |
1492 | // call a memhandler |
1493 | if(rt>=0&&rt1[i]!=0) |
1494 | reglist&=~(1<<rt); |
1495 | save_regs(reglist); |
1496 | if(target==0) |
1497 | emit_movimm(addr,0); |
1498 | else if(rs!=0) |
1499 | emit_mov(rs,0); |
1500 | if(cc<0) |
1501 | emit_loadreg(CCREG,2); |
1502 | emit_addimm(cc<0?2:cc,CLOCK_ADJUST(adj+1),2); |
3968e69e |
1503 | if(is_dynamic) { |
1504 | uintptr_t l1 = ((uintptr_t *)mem_rtab)[addr>>12] << 1; |
1505 | emit_adrp((void *)l1, 1); |
1506 | emit_addimm64(1, l1 & 0xfff, 1); |
1507 | } |
d1e4ebd9 |
1508 | else |
2a014d73 |
1509 | emit_far_call(do_memhandler_pre); |
d1e4ebd9 |
1510 | |
2a014d73 |
1511 | emit_far_call(handler); |
d1e4ebd9 |
1512 | |
1513 | // (no cycle reload after read) |
1514 | if(rt>=0&&rt1[i]!=0) |
1515 | loadstore_extend(type, 0, rt); |
1516 | restore_regs(reglist); |
be516ebe |
1517 | } |
1518 | |
1519 | static void do_writestub(int n) |
1520 | { |
1521 | assem_debug("do_writestub %x\n",start+stubs[n].a*4); |
d1e4ebd9 |
1522 | set_jump_target(stubs[n].addr, out); |
1523 | enum stub_type type=stubs[n].type; |
1524 | int i=stubs[n].a; |
1525 | int rs=stubs[n].b; |
1526 | struct regstat *i_regs=(struct regstat *)stubs[n].c; |
1527 | u_int reglist=stubs[n].e; |
1528 | signed char *i_regmap=i_regs->regmap; |
1529 | int rt,r; |
1530 | if(itype[i]==C1LS||itype[i]==C2LS) { |
1531 | rt=get_reg(i_regmap,r=FTEMP); |
1532 | }else{ |
1533 | rt=get_reg(i_regmap,r=rs2[i]); |
1534 | } |
1535 | assert(rs>=0); |
1536 | assert(rt>=0); |
1537 | int rtmp,temp=-1,temp2,regs_saved=0; |
1538 | void *restore_jump = NULL, *handler_jump = NULL; |
1539 | int reglist2=reglist|(1<<rs)|(1<<rt); |
1540 | for (rtmp = 0; rtmp < HOST_CCREG; rtmp++) { |
1541 | if (rtmp != EXCLUDE_REG && ((1 << rtmp) & reglist) == 0) { |
1542 | temp = rtmp; |
1543 | break; |
1544 | } |
1545 | } |
1546 | if(temp==-1) { |
1547 | save_regs(reglist); |
1548 | regs_saved=1; |
1549 | for(rtmp=0;rtmp<=3;rtmp++) |
1550 | if(rtmp!=rs&&rtmp!=rt) |
1551 | {temp=rtmp;break;} |
1552 | } |
1553 | if((regs_saved||(reglist2&8)==0)&&temp!=3&&rs!=3&&rt!=3) |
1554 | temp2=3; |
1555 | else { |
1556 | host_tempreg_acquire(); |
1557 | temp2=HOST_TEMPREG; |
1558 | } |
1559 | emit_readdword(&mem_wtab,temp); |
1560 | emit_shrimm(rs,12,temp2); |
1561 | emit_readdword_dualindexedx8(temp,temp2,temp2); |
1562 | emit_adds64(temp2,temp2,temp2); |
1563 | handler_jump=out; |
1564 | emit_jc(0); |
1565 | switch(type) { |
1566 | case STOREB_STUB: emit_strb_dualindexed(temp2,rs,rt); break; |
1567 | case STOREH_STUB: emit_strh_dualindexed(temp2,rs,rt); break; |
1568 | case STOREW_STUB: emit_str_dualindexed(temp2,rs,rt); break; |
1569 | default: assert(0); |
1570 | } |
1571 | if(regs_saved) { |
1572 | restore_jump=out; |
1573 | emit_jmp(0); // jump to reg restore |
1574 | } |
1575 | else |
1576 | emit_jmp(stubs[n].retaddr); // return address (invcode check) |
1577 | set_jump_target(handler_jump, out); |
1578 | |
1579 | // TODO FIXME: regalloc should prefer callee-saved regs |
1580 | if(!regs_saved) |
1581 | save_regs(reglist); |
1582 | void *handler=NULL; |
1583 | switch(type) { |
1584 | case STOREB_STUB: handler=jump_handler_write8; break; |
1585 | case STOREH_STUB: handler=jump_handler_write16; break; |
1586 | case STOREW_STUB: handler=jump_handler_write32; break; |
3968e69e |
1587 | default: assert(0); |
d1e4ebd9 |
1588 | } |
1589 | assert(handler); |
1590 | pass_args(rs,rt); |
1591 | if(temp2!=3) { |
1592 | emit_mov64(temp2,3); |
1593 | host_tempreg_release(); |
1594 | } |
1595 | int cc=get_reg(i_regmap,CCREG); |
1596 | if(cc<0) |
1597 | emit_loadreg(CCREG,2); |
1598 | emit_addimm(cc<0?2:cc,CLOCK_ADJUST((int)stubs[n].d+1),2); |
1599 | // returns new cycle_count |
2a014d73 |
1600 | emit_far_call(handler); |
d1e4ebd9 |
1601 | emit_addimm(0,-CLOCK_ADJUST((int)stubs[n].d+1),cc<0?2:cc); |
1602 | if(cc<0) |
1603 | emit_storereg(CCREG,2); |
1604 | if(restore_jump) |
1605 | set_jump_target(restore_jump, out); |
1606 | restore_regs(reglist); |
1607 | emit_jmp(stubs[n].retaddr); |
be516ebe |
1608 | } |
1609 | |
1610 | static void inline_writestub(enum stub_type type, int i, u_int addr, signed char regmap[], int target, int adj, u_int reglist) |
1611 | { |
687b4580 |
1612 | int rs = get_reg(regmap,-1); |
1613 | int rt = get_reg(regmap,target); |
1614 | assert(rs >= 0); |
1615 | assert(rt >= 0); |
1616 | uintptr_t host_addr = 0; |
1617 | void *handler = get_direct_memhandler(mem_wtab, addr, type, &host_addr); |
1618 | if (handler == NULL) { |
d1e4ebd9 |
1619 | if (addr != host_addr) { |
1620 | if (host_addr >= 0x100000000ull) |
1621 | abort(); // ROREG not implemented |
687b4580 |
1622 | emit_movimm_from(addr, rs, host_addr, rs); |
d1e4ebd9 |
1623 | } |
1624 | switch (type) { |
687b4580 |
1625 | case STOREB_STUB: emit_writebyte_indexed(rt, 0, rs); break; |
1626 | case STOREH_STUB: emit_writehword_indexed(rt, 0, rs); break; |
1627 | case STOREW_STUB: emit_writeword_indexed(rt, 0, rs); break; |
1628 | default: assert(0); |
1629 | } |
1630 | return; |
1631 | } |
1632 | |
1633 | // call a memhandler |
1634 | save_regs(reglist); |
687b4580 |
1635 | emit_writeword(rs, &address); // some handlers still need it |
d1e4ebd9 |
1636 | loadstore_extend(type, rt, 0); |
1637 | int cc, cc_use; |
1638 | cc = cc_use = get_reg(regmap, CCREG); |
1639 | if (cc < 0) |
1640 | emit_loadreg(CCREG, (cc_use = 2)); |
1641 | emit_addimm(cc_use, CLOCK_ADJUST(adj+1), 2); |
1642 | |
2a014d73 |
1643 | emit_far_call(do_memhandler_pre); |
1644 | emit_far_call(handler); |
1645 | emit_far_call(do_memhandler_post); |
d1e4ebd9 |
1646 | emit_addimm(0, -CLOCK_ADJUST(adj+1), cc_use); |
1647 | if (cc < 0) |
1648 | emit_storereg(CCREG, cc_use); |
687b4580 |
1649 | restore_regs(reglist); |
be516ebe |
1650 | } |
1651 | |
3968e69e |
1652 | static int verify_code_arm64(const void *source, const void *copy, u_int size) |
be516ebe |
1653 | { |
3968e69e |
1654 | int ret = memcmp(source, copy, size); |
1655 | //printf("%s %p,%#x = %d\n", __func__, source, size, ret); |
1656 | return ret; |
1657 | } |
1658 | |
1659 | // this output is parsed by verify_dirty, get_bounds, isclean, get_clean_addr |
1660 | static void do_dirty_stub_base(u_int vaddr) |
1661 | { |
1662 | assert(slen <= MAXBLOCK); |
1663 | emit_loadlp_ofs(0, 0); // ldr x1, source |
1664 | emit_loadlp_ofs(0, 1); // ldr x2, copy |
1665 | emit_movz(slen*4, 2); |
2a014d73 |
1666 | emit_far_call(verify_code_arm64); |
3968e69e |
1667 | void *jmp = out; |
1668 | emit_cbz(0, 0); |
1669 | emit_movz(vaddr & 0xffff, 0); |
1670 | emit_movk_lsl16(vaddr >> 16, 0); |
2a014d73 |
1671 | emit_far_call(get_addr); |
3968e69e |
1672 | emit_jmpreg(0); |
1673 | set_jump_target(jmp, out); |
1674 | } |
1675 | |
1676 | static void assert_dirty_stub(const u_int *ptr) |
1677 | { |
1678 | assert((ptr[0] & 0xff00001f) == 0x58000000); // ldr x0, source |
1679 | assert((ptr[1] & 0xff00001f) == 0x58000001); // ldr x1, copy |
1680 | assert((ptr[2] & 0xffe0001f) == 0x52800002); // movz w2, #slen*4 |
1681 | assert( ptr[8] == 0xd61f0000); // br x0 |
be516ebe |
1682 | } |
1683 | |
d1e4ebd9 |
1684 | static void set_loadlp(u_int *loadl, void *lit) |
be516ebe |
1685 | { |
d1e4ebd9 |
1686 | uintptr_t ofs = (u_char *)lit - (u_char *)loadl; |
1687 | assert((*loadl & ~0x1f) == 0x58000000); |
1688 | assert((ofs & 3) == 0); |
1689 | assert(ofs < 0x100000); |
1690 | *loadl |= (ofs >> 2) << 5; |
1691 | } |
1692 | |
d1e4ebd9 |
1693 | static void do_dirty_stub_emit_literals(u_int *loadlps) |
1694 | { |
1695 | set_loadlp(&loadlps[0], out); |
1696 | output_w64((uintptr_t)source); |
1697 | set_loadlp(&loadlps[1], out); |
1698 | output_w64((uintptr_t)copy); |
be516ebe |
1699 | } |
1700 | |
d1e4ebd9 |
1701 | static void *do_dirty_stub(int i) |
be516ebe |
1702 | { |
1703 | assem_debug("do_dirty_stub %x\n",start+i*4); |
d1e4ebd9 |
1704 | u_int *loadlps = (void *)out; |
3968e69e |
1705 | do_dirty_stub_base(start + i*4); |
d1e4ebd9 |
1706 | void *entry = out; |
be516ebe |
1707 | load_regs_entry(i); |
d1e4ebd9 |
1708 | if (entry == out) |
1709 | entry = instr_addr[i]; |
1710 | emit_jmp(instr_addr[i]); |
1711 | do_dirty_stub_emit_literals(loadlps); |
1712 | return entry; |
be516ebe |
1713 | } |
1714 | |
3968e69e |
1715 | static void do_dirty_stub_ds(void) |
be516ebe |
1716 | { |
d1e4ebd9 |
1717 | u_int *loadlps = (void *)out; |
3968e69e |
1718 | do_dirty_stub_base(start + 1); |
1719 | void *lit_jumpover = out; |
d1e4ebd9 |
1720 | emit_jmp(out + 8*2); |
1721 | do_dirty_stub_emit_literals(loadlps); |
3968e69e |
1722 | set_jump_target(lit_jumpover, out); |
be516ebe |
1723 | } |
1724 | |
3968e69e |
1725 | static uint64_t get_from_ldr_literal(const u_int *i) |
1726 | { |
1727 | signed int ofs; |
1728 | assert((i[0] & 0xff000000) == 0x58000000); |
1729 | ofs = i[0] << 8; |
1730 | ofs >>= 5+8; |
1731 | return *(uint64_t *)(i + ofs); |
1732 | } |
be516ebe |
1733 | |
3968e69e |
1734 | static uint64_t get_from_movz(const u_int *i) |
1735 | { |
1736 | assert((i[0] & 0x7fe00000) == 0x52800000); |
1737 | return (i[0] >> 5) & 0xffff; |
1738 | } |
be516ebe |
1739 | |
3968e69e |
1740 | // Find the "clean" entry point from a "dirty" entry point |
1741 | // by skipping past the call to verify_code |
1742 | static void *get_clean_addr(u_int *addr) |
be516ebe |
1743 | { |
3968e69e |
1744 | assert_dirty_stub(addr); |
1745 | return addr + 9; |
be516ebe |
1746 | } |
be516ebe |
1747 | |
3968e69e |
1748 | static int verify_dirty(const u_int *ptr) |
be516ebe |
1749 | { |
3968e69e |
1750 | const void *source, *copy; |
1751 | u_int len; |
1752 | assert_dirty_stub(ptr); |
1753 | source = (void *)get_from_ldr_literal(&ptr[0]); // ldr x1, source |
1754 | copy = (void *)get_from_ldr_literal(&ptr[1]); // ldr x1, copy |
1755 | len = get_from_movz(&ptr[2]); // movz w3, #slen*4 |
1756 | return !memcmp(source, copy, len); |
1757 | } |
1758 | |
1759 | static int isclean(void *addr) |
1760 | { |
1761 | const u_int *ptr = addr; |
1762 | if ((*ptr >> 24) == 0x58) { // the only place ldr (literal) is used |
1763 | assert_dirty_stub(ptr); |
1764 | return 0; |
1765 | } |
1766 | return 1; |
1767 | } |
1768 | |
1769 | // get source that block at addr was compiled from (host pointers) |
1770 | static void get_bounds(void *addr, u_char **start, u_char **end) |
1771 | { |
1772 | const u_int *ptr = addr; |
1773 | assert_dirty_stub(ptr); |
1774 | *start = (u_char *)get_from_ldr_literal(&ptr[0]); // ldr x1, source |
1775 | *end = *start + get_from_movz(&ptr[2]); // movz w3, #slen*4 |
1776 | } |
1777 | |
1778 | /* Special assem */ |
1779 | |
1780 | static void c2op_prologue(u_int op,u_int reglist) |
1781 | { |
1782 | save_load_regs_all(1, reglist); |
1783 | #ifdef PCNT |
1784 | emit_movimm(op, 0); |
2a014d73 |
1785 | emit_far_call(pcnt_gte_start); |
3968e69e |
1786 | #endif |
1787 | // pointer to cop2 regs |
1788 | emit_addimm64(FP, (u_char *)&psxRegs.CP2D.r[0] - (u_char *)&dynarec_local, 0); |
1789 | } |
1790 | |
1791 | static void c2op_epilogue(u_int op,u_int reglist) |
1792 | { |
1793 | #ifdef PCNT |
1794 | emit_movimm(op, 0); |
2a014d73 |
1795 | emit_far_call(pcnt_gte_end); |
3968e69e |
1796 | #endif |
1797 | save_load_regs_all(0, reglist); |
be516ebe |
1798 | } |
1799 | |
1800 | static void c2op_assemble(int i,struct regstat *i_regs) |
1801 | { |
3968e69e |
1802 | u_int c2op=source[i]&0x3f; |
1803 | u_int hr,reglist_full=0,reglist; |
1804 | int need_flags,need_ir; |
1805 | for(hr=0;hr<HOST_REGS;hr++) { |
1806 | if(i_regs->regmap[hr]>=0) reglist_full|=1<<hr; |
1807 | } |
1808 | reglist=reglist_full&CALLER_SAVE_REGS; |
1809 | |
1810 | if (gte_handlers[c2op]!=NULL) { |
1811 | need_flags=!(gte_unneeded[i+1]>>63); // +1 because of how liveness detection works |
1812 | need_ir=(gte_unneeded[i+1]&0xe00)!=0xe00; |
1813 | assem_debug("gte op %08x, unneeded %016lx, need_flags %d, need_ir %d\n", |
1814 | source[i],gte_unneeded[i+1],need_flags,need_ir); |
1815 | if(new_dynarec_hacks&NDHACK_GTE_NO_FLAGS) |
1816 | need_flags=0; |
1817 | //int shift = (source[i] >> 19) & 1; |
1818 | //int lm = (source[i] >> 10) & 1; |
1819 | switch(c2op) { |
1820 | default: |
1821 | (void)need_ir; |
1822 | c2op_prologue(c2op,reglist); |
1823 | emit_movimm(source[i],1); // opcode |
1824 | emit_writeword(1,&psxRegs.code); |
2a014d73 |
1825 | emit_far_call(need_flags?gte_handlers[c2op]:gte_handlers_nf[c2op]); |
3968e69e |
1826 | break; |
1827 | } |
1828 | c2op_epilogue(c2op,reglist); |
1829 | } |
1830 | } |
1831 | |
1832 | static void c2op_ctc2_31_assemble(signed char sl, signed char temp) |
1833 | { |
1834 | //value = value & 0x7ffff000; |
1835 | //if (value & 0x7f87e000) value |= 0x80000000; |
1836 | emit_andimm(sl, 0x7fffe000, temp); |
1837 | emit_testimm(temp, 0xff87ffff); |
1838 | emit_andimm(sl, 0x7ffff000, temp); |
1839 | host_tempreg_acquire(); |
1840 | emit_orimm(temp, 0x80000000, HOST_TEMPREG); |
1841 | emit_cmovne_reg(HOST_TEMPREG, temp); |
1842 | host_tempreg_release(); |
1843 | assert(0); // testing needed |
1844 | } |
1845 | |
1846 | static void do_mfc2_31_one(u_int copr,signed char temp) |
1847 | { |
1848 | emit_readshword(®_cop2d[copr],temp); |
1849 | emit_bicsar_imm(temp,31,temp); |
1850 | emit_cmpimm(temp,0xf80); |
1851 | emit_csinvle_reg(temp,WZR,temp); // if (temp > 0xf80) temp = ~0; |
1852 | emit_andimm(temp,0xf80,temp); |
1853 | } |
1854 | |
1855 | static void c2op_mfc2_29_assemble(signed char tl, signed char temp) |
1856 | { |
1857 | if (temp < 0) { |
1858 | host_tempreg_acquire(); |
1859 | temp = HOST_TEMPREG; |
1860 | } |
1861 | do_mfc2_31_one(9,temp); |
1862 | emit_shrimm(temp,7,tl); |
1863 | do_mfc2_31_one(10,temp); |
1864 | emit_orrshr_imm(temp,2,tl); |
1865 | do_mfc2_31_one(11,temp); |
1866 | emit_orrshl_imm(temp,3,tl); |
1867 | emit_writeword(tl,®_cop2d[29]); |
1868 | |
1869 | if (temp == HOST_TEMPREG) |
1870 | host_tempreg_release(); |
be516ebe |
1871 | } |
1872 | |
1873 | static void multdiv_assemble_arm64(int i,struct regstat *i_regs) |
1874 | { |
3968e69e |
1875 | // case 0x18: MULT |
1876 | // case 0x19: MULTU |
1877 | // case 0x1A: DIV |
1878 | // case 0x1B: DIVU |
1879 | if(rs1[i]&&rs2[i]) |
1880 | { |
1881 | switch(opcode2[i]) |
1882 | { |
1883 | case 0x18: // MULT |
1884 | case 0x19: // MULTU |
1885 | { |
1886 | signed char m1=get_reg(i_regs->regmap,rs1[i]); |
1887 | signed char m2=get_reg(i_regs->regmap,rs2[i]); |
1888 | signed char hi=get_reg(i_regs->regmap,HIREG); |
1889 | signed char lo=get_reg(i_regs->regmap,LOREG); |
1890 | assert(m1>=0); |
1891 | assert(m2>=0); |
1892 | assert(hi>=0); |
1893 | assert(lo>=0); |
1894 | |
1895 | if(opcode2[i]==0x18) // MULT |
1896 | emit_smull(m1,m2,hi); |
1897 | else // MULTU |
1898 | emit_umull(m1,m2,hi); |
1899 | |
1900 | emit_mov(hi,lo); |
1901 | emit_shrimm64(hi,32,hi); |
1902 | break; |
1903 | } |
1904 | case 0x1A: // DIV |
1905 | case 0x1B: // DIVU |
1906 | { |
1907 | signed char numerator=get_reg(i_regs->regmap,rs1[i]); |
1908 | signed char denominator=get_reg(i_regs->regmap,rs2[i]); |
1909 | signed char quotient=get_reg(i_regs->regmap,LOREG); |
1910 | signed char remainder=get_reg(i_regs->regmap,HIREG); |
1911 | assert(numerator>=0); |
1912 | assert(denominator>=0); |
1913 | assert(quotient>=0); |
1914 | assert(remainder>=0); |
1915 | |
1916 | if (opcode2[i] == 0x1A) // DIV |
1917 | emit_sdiv(numerator,denominator,quotient); |
1918 | else // DIVU |
1919 | emit_udiv(numerator,denominator,quotient); |
1920 | emit_msub(quotient,denominator,numerator,remainder); |
1921 | |
1922 | // div 0 quotient (remainder is already correct) |
1923 | host_tempreg_acquire(); |
1924 | if (opcode2[i] == 0x1A) // DIV |
1925 | emit_sub_asrimm(0,numerator,31,HOST_TEMPREG); |
1926 | else |
1927 | emit_movimm(~0,HOST_TEMPREG); |
1928 | emit_test(denominator,denominator); |
1929 | emit_cmoveq_reg(HOST_TEMPREG,quotient); |
1930 | host_tempreg_release(); |
1931 | break; |
1932 | } |
1933 | default: |
1934 | assert(0); |
1935 | } |
1936 | } |
1937 | else |
1938 | { |
1939 | signed char hr=get_reg(i_regs->regmap,HIREG); |
1940 | signed char lr=get_reg(i_regs->regmap,LOREG); |
1941 | if ((opcode2[i]==0x1A || opcode2[i]==0x1B) && rs2[i]==0) // div 0 |
1942 | { |
1943 | if (rs1[i]) { |
1944 | signed char numerator = get_reg(i_regs->regmap, rs1[i]); |
1945 | assert(numerator >= 0); |
1946 | if (hr >= 0) |
1947 | emit_mov(numerator,hr); |
1948 | if (lr >= 0) { |
1949 | if (opcode2[i] == 0x1A) // DIV |
1950 | emit_sub_asrimm(0,numerator,31,lr); |
1951 | else |
1952 | emit_movimm(~0,lr); |
1953 | } |
1954 | } |
1955 | else { |
1956 | if (hr >= 0) emit_zeroreg(hr); |
1957 | if (lr >= 0) emit_movimm(~0,lr); |
1958 | } |
1959 | } |
1960 | else |
1961 | { |
1962 | // Multiply by zero is zero. |
1963 | if (hr >= 0) emit_zeroreg(hr); |
1964 | if (lr >= 0) emit_zeroreg(lr); |
1965 | } |
1966 | } |
be516ebe |
1967 | } |
1968 | #define multdiv_assemble multdiv_assemble_arm64 |
1969 | |
d1e4ebd9 |
1970 | static void do_jump_vaddr(u_int rs) |
1971 | { |
1972 | if (rs != 0) |
1973 | emit_mov(rs, 0); |
2a014d73 |
1974 | emit_far_call(get_addr_ht); |
d1e4ebd9 |
1975 | emit_jmpreg(0); |
1976 | } |
1977 | |
be516ebe |
1978 | static void do_preload_rhash(u_int r) { |
1979 | // Don't need this for ARM. On x86, this puts the value 0xf8 into the |
1980 | // register. On ARM the hash can be done with a single instruction (below) |
1981 | } |
1982 | |
1983 | static void do_preload_rhtbl(u_int ht) { |
d1e4ebd9 |
1984 | emit_addimm64(FP, (u_char *)&mini_ht - (u_char *)&dynarec_local, ht); |
be516ebe |
1985 | } |
1986 | |
1987 | static void do_rhash(u_int rs,u_int rh) { |
1988 | emit_andimm(rs, 0xf8, rh); |
1989 | } |
1990 | |
d1e4ebd9 |
1991 | static void do_miniht_load(int ht, u_int rh) { |
1992 | emit_add64(ht, rh, ht); |
1993 | emit_ldst(0, 0, rh, ht, 0); |
be516ebe |
1994 | } |
1995 | |
d1e4ebd9 |
1996 | static void do_miniht_jump(u_int rs, u_int rh, u_int ht) { |
1997 | emit_cmp(rh, rs); |
1998 | void *jaddr = out; |
1999 | emit_jeq(0); |
2000 | do_jump_vaddr(rs); |
2001 | |
2002 | set_jump_target(jaddr, out); |
2003 | assem_debug("ldr %s,[%s,#8]\n",regname64[ht], regname64[ht]); |
2004 | output_w32(0xf9400000 | imm12_rn_rd(8 >> 3, ht, ht)); |
2005 | emit_jmpreg(ht); |
be516ebe |
2006 | } |
2007 | |
d1e4ebd9 |
2008 | // parsed by set_jump_target? |
be516ebe |
2009 | static void do_miniht_insert(u_int return_address,u_int rt,int temp) { |
d1e4ebd9 |
2010 | emit_movz_lsl16((return_address>>16)&0xffff,rt); |
2011 | emit_movk(return_address&0xffff,rt); |
2012 | add_to_linker(out,return_address,1); |
2013 | emit_adr(out,temp); |
2014 | emit_writedword(temp,&mini_ht[(return_address&0xFF)>>3][1]); |
2015 | emit_writeword(rt,&mini_ht[(return_address&0xFF)>>3][0]); |
be516ebe |
2016 | } |
2017 | |
919981d0 |
2018 | static void clear_cache_arm64(char *start, char *end) |
be516ebe |
2019 | { |
919981d0 |
2020 | // Don't rely on GCC's __clear_cache implementation, as it caches |
2021 | // icache/dcache cache line sizes, that can vary between cores on |
2022 | // big.LITTLE architectures. |
2023 | uint64_t addr, ctr_el0; |
2024 | static size_t icache_line_size = 0xffff, dcache_line_size = 0xffff; |
2025 | size_t isize, dsize; |
2026 | |
2027 | __asm__ volatile("mrs %0, ctr_el0" : "=r"(ctr_el0)); |
2028 | isize = 4 << ((ctr_el0 >> 0) & 0xf); |
2029 | dsize = 4 << ((ctr_el0 >> 16) & 0xf); |
2030 | |
2031 | // use the global minimum cache line size |
2032 | icache_line_size = isize = icache_line_size < isize ? icache_line_size : isize; |
2033 | dcache_line_size = dsize = dcache_line_size < dsize ? dcache_line_size : dsize; |
2034 | |
2035 | /* If CTR_EL0.IDC is enabled, Data cache clean to the Point of Unification is |
2036 | not required for instruction to data coherence. */ |
2037 | if ((ctr_el0 & (1 << 28)) == 0x0) { |
2038 | addr = (uint64_t)start & ~(uint64_t)(dsize - 1); |
2039 | for (; addr < (uint64_t)end; addr += dsize) |
2040 | // use "civac" instead of "cvau", as this is the suggested workaround for |
2041 | // Cortex-A53 errata 819472, 826319, 827319 and 824069. |
2042 | __asm__ volatile("dc civac, %0" : : "r"(addr) : "memory"); |
be516ebe |
2043 | } |
919981d0 |
2044 | __asm__ volatile("dsb ish" : : : "memory"); |
be516ebe |
2045 | |
919981d0 |
2046 | /* If CTR_EL0.DIC is enabled, Instruction cache cleaning to the Point of |
2047 | Unification is not required for instruction to data coherence. */ |
2048 | if ((ctr_el0 & (1 << 29)) == 0x0) { |
2049 | addr = (uint64_t)start & ~(uint64_t)(isize - 1); |
2050 | for (; addr < (uint64_t)end; addr += isize) |
2051 | __asm__ volatile("ic ivau, %0" : : "r"(addr) : "memory"); |
2052 | |
2053 | __asm__ volatile("dsb ish" : : : "memory"); |
be516ebe |
2054 | } |
919981d0 |
2055 | |
2056 | __asm__ volatile("isb" : : : "memory"); |
be516ebe |
2057 | } |
2058 | |
2059 | // CPU-architecture-specific initialization |
2a014d73 |
2060 | static void arch_init(void) |
2061 | { |
2062 | uintptr_t diff = (u_char *)&ndrc->tramp.f - (u_char *)&ndrc->tramp.ops; |
2063 | struct tramp_insns *ops = ndrc->tramp.ops; |
2064 | size_t i; |
2065 | assert(!(diff & 3)); |
2066 | start_tcache_write(ops, (u_char *)ops + sizeof(ndrc->tramp.ops)); |
2067 | for (i = 0; i < ARRAY_SIZE(ndrc->tramp.ops); i++) { |
2068 | ops[i].ldr = 0x58000000 | imm19_rt(diff >> 2, 17); // ldr x17, [=val] |
2069 | ops[i].br = 0xd61f0000 | rm_rn_rd(0, 17, 0); // br x17 |
2070 | } |
2071 | end_tcache_write(ops, (u_char *)ops + sizeof(ndrc->tramp.ops)); |
be516ebe |
2072 | } |
2073 | |
2074 | // vim:shiftwidth=2:expandtab |