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 | |
d1e4ebd9 |
26 | void do_memhandler_pre(); |
27 | void do_memhandler_post(); |
be516ebe |
28 | |
29 | /* Linker */ |
d1e4ebd9 |
30 | static void set_jump_target(void *addr, void *target) |
be516ebe |
31 | { |
d9e2b173 |
32 | u_int *ptr = NDRC_WRITE_OFFSET(addr); |
d1e4ebd9 |
33 | intptr_t offset = (u_char *)target - (u_char *)addr; |
34 | |
3968e69e |
35 | if ((*ptr&0xFC000000) == 0x14000000) { // b |
d1e4ebd9 |
36 | assert(offset>=-134217728LL&&offset<134217728LL); |
37 | *ptr=(*ptr&0xFC000000)|((offset>>2)&0x3ffffff); |
38 | } |
3968e69e |
39 | else if ((*ptr&0xff000000) == 0x54000000 // b.cond |
40 | || (*ptr&0x7e000000) == 0x34000000) { // cbz/cbnz |
d1e4ebd9 |
41 | // Conditional branch are limited to +/- 1MB |
42 | // block max size is 256k so branching beyond the +/- 1MB limit |
3d680478 |
43 | // should only happen when jumping to an already compiled block (see add_jump_out) |
d1e4ebd9 |
44 | // a workaround would be to do a trampoline jump via a stub at the end of the block |
3968e69e |
45 | assert(-1048576 <= offset && offset < 1048576); |
4a2e3735 |
46 | *ptr=(*ptr&0xFF00001F)|(((offset>>2)&0x7ffff)<<5); |
d1e4ebd9 |
47 | } |
3968e69e |
48 | else if((*ptr&0x9f000000)==0x10000000) { // adr |
d1e4ebd9 |
49 | // generated by do_miniht_insert |
50 | assert(offset>=-1048576LL&&offset<1048576LL); |
51 | *ptr=(*ptr&0x9F00001F)|(offset&0x3)<<29|((offset>>2)&0x7ffff)<<5; |
52 | } |
53 | else |
3968e69e |
54 | abort(); // should not happen |
be516ebe |
55 | } |
56 | |
57 | // from a pointer to external jump stub (which was produced by emit_extjump2) |
58 | // find where the jumping insn is |
59 | static void *find_extjump_insn(void *stub) |
60 | { |
d1e4ebd9 |
61 | int *ptr = (int *)stub + 2; |
62 | assert((*ptr&0x9f000000) == 0x10000000); // adr |
63 | int offset = (((signed int)(*ptr<<8)>>13)<<2)|((*ptr>>29)&0x3); |
64 | return ptr + offset / 4; |
be516ebe |
65 | } |
66 | |
104df9d3 |
67 | #if 0 |
be516ebe |
68 | // find where external branch is liked to using addr of it's stub: |
3968e69e |
69 | // get address that the stub loads (dyna_linker arg1), |
be516ebe |
70 | // treat it as a pointer to branch insn, |
71 | // return addr where that branch jumps to |
72 | static void *get_pointer(void *stub) |
73 | { |
d1e4ebd9 |
74 | int *i_ptr = find_extjump_insn(stub); |
3968e69e |
75 | if ((*i_ptr&0xfc000000) == 0x14000000) // b |
76 | return i_ptr + ((signed int)(*i_ptr<<6)>>6); |
77 | if ((*i_ptr&0xff000000) == 0x54000000 // b.cond |
78 | || (*i_ptr&0x7e000000) == 0x34000000) // cbz/cbnz |
79 | return i_ptr + ((signed int)(*i_ptr<<8)>>13); |
be516ebe |
80 | assert(0); |
81 | return NULL; |
82 | } |
104df9d3 |
83 | #endif |
be516ebe |
84 | |
be516ebe |
85 | // Allocate a specific ARM register. |
86 | static void alloc_arm_reg(struct regstat *cur,int i,signed char reg,int hr) |
87 | { |
88 | int n; |
89 | int dirty=0; |
90 | |
91 | // see if it's already allocated (and dealloc it) |
92 | for(n=0;n<HOST_REGS;n++) |
93 | { |
94 | if(n!=EXCLUDE_REG&&cur->regmap[n]==reg) { |
95 | dirty=(cur->dirty>>n)&1; |
96 | cur->regmap[n]=-1; |
97 | } |
98 | } |
99 | |
100 | cur->regmap[hr]=reg; |
101 | cur->dirty&=~(1<<hr); |
102 | cur->dirty|=dirty<<hr; |
103 | cur->isconst&=~(1<<hr); |
104 | } |
105 | |
106 | // Alloc cycle count into dedicated register |
107 | static void alloc_cc(struct regstat *cur,int i) |
108 | { |
109 | alloc_arm_reg(cur,i,CCREG,HOST_CCREG); |
110 | } |
111 | |
112 | /* Special alloc */ |
113 | |
114 | |
115 | /* Assembler */ |
116 | |
117 | static unused const char *regname[32] = { |
d1e4ebd9 |
118 | "w0", "w1", "w2", "w3", "w4", "w5", "w6", "w7", |
119 | "w8", "w9", "w10", "w11", "w12", "w13", "w14", "w15", |
120 | "ip0", "ip1", "w18", "w19", "w20", "w21", "w22", "w23", |
121 | "w24", "w25", "w26", "w27", "w28", "wfp", "wlr", "wsp" |
122 | }; |
123 | |
124 | static unused const char *regname64[32] = { |
125 | "x0", "x1", "x2", "x3", "x4", "x5", "x6", "x7", |
126 | "x8", "x9", "x10", "x11", "x12", "x13", "x14", "x15", |
127 | "ip0", "ip1", "x18", "x19", "x20", "x21", "x22", "x23", |
128 | "x24", "x25", "x26", "x27", "x28", "fp", "lr", "sp" |
129 | }; |
130 | |
131 | enum { |
132 | COND_EQ, COND_NE, COND_CS, COND_CC, COND_MI, COND_PL, COND_VS, COND_VC, |
133 | COND_HI, COND_LS, COND_GE, COND_LT, COND_GT, COND_LE, COND_AW, COND_NV |
134 | }; |
135 | |
136 | static unused const char *condname[16] = { |
137 | "eq", "ne", "cs", "cc", "mi", "pl", "vs", "vc", |
138 | "hi", "ls", "ge", "lt", "gt", "le", "aw", "nv" |
be516ebe |
139 | }; |
140 | |
be516ebe |
141 | static void output_w32(u_int word) |
142 | { |
d9e2b173 |
143 | *((u_int *)NDRC_WRITE_OFFSET(out)) = word; |
be516ebe |
144 | out += 4; |
145 | } |
146 | |
3968e69e |
147 | static u_int rn_rd(u_int rn, u_int rd) |
148 | { |
149 | assert(rn < 31); |
150 | assert(rd < 31); |
151 | return (rn << 5) | rd; |
152 | } |
153 | |
be516ebe |
154 | static u_int rm_rn_rd(u_int rm, u_int rn, u_int rd) |
155 | { |
d1e4ebd9 |
156 | assert(rm < 32); |
157 | assert(rn < 32); |
158 | assert(rd < 32); |
be516ebe |
159 | return (rm << 16) | (rn << 5) | rd; |
160 | } |
161 | |
3968e69e |
162 | static u_int rm_ra_rn_rd(u_int rm, u_int ra, u_int rn, u_int rd) |
163 | { |
164 | assert(ra < 32); |
165 | return rm_rn_rd(rm, rn, rd) | (ra << 10); |
166 | } |
167 | |
d1e4ebd9 |
168 | static u_int imm7_rt2_rn_rt(u_int imm7, u_int rt2, u_int rn, u_int rt) |
169 | { |
170 | assert(imm7 < 0x80); |
171 | assert(rt2 < 31); |
172 | assert(rn < 32); |
173 | assert(rt < 31); |
174 | return (imm7 << 15) | (rt2 << 10) | (rn << 5) | rt; |
175 | } |
176 | |
687b4580 |
177 | static u_int rm_imm6_rn_rd(u_int rm, u_int imm6, u_int rn, u_int rd) |
178 | { |
179 | assert(imm6 <= 63); |
180 | return rm_rn_rd(rm, rn, rd) | (imm6 << 10); |
181 | } |
182 | |
be516ebe |
183 | static u_int imm16_rd(u_int imm16, u_int rd) |
184 | { |
185 | assert(imm16 < 0x10000); |
186 | assert(rd < 31); |
187 | return (imm16 << 5) | rd; |
188 | } |
189 | |
687b4580 |
190 | static u_int imm12_rn_rd(u_int imm12, u_int rn, u_int rd) |
191 | { |
192 | assert(imm12 < 0x1000); |
d1e4ebd9 |
193 | assert(rn < 32); |
194 | assert(rd < 32); |
195 | return (imm12 << 10) | (rn << 5) | rd; |
196 | } |
197 | |
198 | static u_int imm9_rn_rt(u_int imm9, u_int rn, u_int rd) |
199 | { |
200 | assert(imm9 < 0x200); |
687b4580 |
201 | assert(rn < 31); |
202 | assert(rd < 31); |
d1e4ebd9 |
203 | return (imm9 << 12) | (rn << 5) | rd; |
687b4580 |
204 | } |
205 | |
d1e4ebd9 |
206 | static u_int imm19_rt(u_int imm19, u_int rt) |
207 | { |
208 | assert(imm19 < 0x80000); |
209 | assert(rt < 31); |
210 | return (imm19 << 5) | rt; |
211 | } |
212 | |
213 | static u_int n_immr_imms_rn_rd(u_int n, u_int immr, u_int imms, u_int rn, u_int rd) |
214 | { |
215 | assert(n < 2); |
216 | assert(immr < 0x40); |
217 | assert(imms < 0x40); |
218 | assert(rn < 32); |
219 | assert(rd < 32); |
220 | return (n << 22) | (immr << 16) | (imms << 10) | (rn << 5) | rd; |
221 | } |
222 | |
223 | static u_int genjmp(const u_char *addr) |
be516ebe |
224 | { |
225 | intptr_t offset = addr - out; |
d1e4ebd9 |
226 | if ((uintptr_t)addr < 3) return 0; // a branch that will be patched later |
be516ebe |
227 | if (offset < -134217728 || offset > 134217727) { |
d1e4ebd9 |
228 | SysPrintf("%s: out of range: %p %lx\n", __func__, addr, offset); |
229 | abort(); |
be516ebe |
230 | return 0; |
231 | } |
d1e4ebd9 |
232 | return ((u_int)offset >> 2) & 0x03ffffff; |
be516ebe |
233 | } |
234 | |
d1e4ebd9 |
235 | static u_int genjmpcc(const u_char *addr) |
be516ebe |
236 | { |
237 | intptr_t offset = addr - out; |
d1e4ebd9 |
238 | if ((uintptr_t)addr < 3) return 0; |
be516ebe |
239 | if (offset < -1048576 || offset > 1048572) { |
d1e4ebd9 |
240 | SysPrintf("%s: out of range: %p %lx\n", __func__, addr, offset); |
241 | abort(); |
242 | return 0; |
243 | } |
244 | return ((u_int)offset >> 2) & 0x7ffff; |
245 | } |
246 | |
247 | static uint32_t is_mask(u_int value) |
248 | { |
249 | return value && ((value + 1) & value) == 0; |
250 | } |
251 | |
252 | // This function returns true if the argument contains a |
253 | // non-empty sequence of ones (possibly rotated) with the remainder zero. |
254 | static uint32_t is_rotated_mask(u_int value) |
255 | { |
3968e69e |
256 | if (value == 0 || value == ~0) |
be516ebe |
257 | return 0; |
d1e4ebd9 |
258 | if (is_mask((value - 1) | value)) |
259 | return 1; |
260 | return is_mask((~value - 1) | ~value); |
261 | } |
262 | |
263 | static void gen_logical_imm(u_int value, u_int *immr, u_int *imms) |
264 | { |
265 | int lzeros, tzeros, ones; |
266 | assert(value != 0); |
267 | if (is_mask((value - 1) | value)) { |
268 | lzeros = __builtin_clz(value); |
269 | tzeros = __builtin_ctz(value); |
270 | ones = 32 - lzeros - tzeros; |
271 | *immr = (32 - tzeros) & 31; |
272 | *imms = ones - 1; |
273 | return; |
be516ebe |
274 | } |
d1e4ebd9 |
275 | value = ~value; |
276 | if (is_mask((value - 1) | value)) { |
277 | lzeros = __builtin_clz(value); |
278 | tzeros = __builtin_ctz(value); |
279 | ones = 32 - lzeros - tzeros; |
3968e69e |
280 | *immr = lzeros; |
d1e4ebd9 |
281 | *imms = 31 - ones; |
282 | return; |
283 | } |
3968e69e |
284 | abort(); |
be516ebe |
285 | } |
286 | |
287 | static void emit_mov(u_int rs, u_int rt) |
288 | { |
687b4580 |
289 | assem_debug("mov %s,%s\n", regname[rt], regname[rs]); |
d1e4ebd9 |
290 | output_w32(0x2a000000 | rm_rn_rd(rs, WZR, rt)); |
291 | } |
292 | |
293 | static void emit_mov64(u_int rs, u_int rt) |
294 | { |
295 | assem_debug("mov %s,%s\n", regname64[rt], regname64[rs]); |
296 | output_w32(0xaa000000 | rm_rn_rd(rs, WZR, rt)); |
be516ebe |
297 | } |
298 | |
687b4580 |
299 | static void emit_add(u_int rs1, u_int rs2, u_int rt) |
be516ebe |
300 | { |
d1e4ebd9 |
301 | assem_debug("add %s,%s,%s\n", regname[rt], regname[rs1], regname[rs2]); |
302 | output_w32(0x0b000000 | rm_rn_rd(rs2, rs1, rt)); |
be516ebe |
303 | } |
304 | |
d1e4ebd9 |
305 | static void emit_add64(u_int rs1, u_int rs2, u_int rt) |
be516ebe |
306 | { |
d1e4ebd9 |
307 | assem_debug("add %s,%s,%s\n", regname64[rt], regname64[rs1], regname64[rs2]); |
308 | output_w32(0x8b000000 | rm_rn_rd(rs2, rs1, rt)); |
be516ebe |
309 | } |
310 | |
d1e4ebd9 |
311 | static void emit_adds64(u_int rs1, u_int rs2, u_int rt) |
be516ebe |
312 | { |
3968e69e |
313 | assem_debug("adds %s,%s,%s\n",regname64[rt],regname64[rs1],regname64[rs2]); |
d1e4ebd9 |
314 | output_w32(0xab000000 | rm_rn_rd(rs2, rs1, rt)); |
315 | } |
39b71d9a |
316 | #define emit_adds_ptr emit_adds64 |
d1e4ebd9 |
317 | |
318 | static void emit_neg(u_int rs, u_int rt) |
319 | { |
320 | assem_debug("neg %s,%s\n",regname[rt],regname[rs]); |
321 | output_w32(0x4b000000 | rm_rn_rd(rs, WZR, rt)); |
be516ebe |
322 | } |
323 | |
687b4580 |
324 | static void emit_sub(u_int rs1, u_int rs2, u_int rt) |
be516ebe |
325 | { |
d1e4ebd9 |
326 | assem_debug("sub %s,%s,%s\n", regname[rt], regname[rs1], regname[rs2]); |
687b4580 |
327 | output_w32(0x4b000000 | rm_imm6_rn_rd(rs2, 0, rs1, rt)); |
be516ebe |
328 | } |
329 | |
3968e69e |
330 | static void emit_sub_asrimm(u_int rs1, u_int rs2, u_int shift, u_int rt) |
331 | { |
332 | assem_debug("sub %s,%s,%s,asr #%u\n",regname[rt],regname[rs1],regname[rs2],shift); |
333 | output_w32(0x4b800000 | rm_imm6_rn_rd(rs2, shift, rs1, rt)); |
334 | } |
335 | |
d1e4ebd9 |
336 | static void emit_movz(u_int imm, u_int rt) |
be516ebe |
337 | { |
d1e4ebd9 |
338 | assem_debug("movz %s,#%#x\n", regname[rt], imm); |
339 | output_w32(0x52800000 | imm16_rd(imm, rt)); |
340 | } |
341 | |
342 | static void emit_movz_lsl16(u_int imm, u_int rt) |
343 | { |
344 | assem_debug("movz %s,#%#x,lsl #16\n", regname[rt], imm); |
345 | output_w32(0x52a00000 | imm16_rd(imm, rt)); |
346 | } |
347 | |
348 | static void emit_movn(u_int imm, u_int rt) |
349 | { |
350 | assem_debug("movn %s,#%#x\n", regname[rt], imm); |
351 | output_w32(0x12800000 | imm16_rd(imm, rt)); |
352 | } |
353 | |
354 | static void emit_movn_lsl16(u_int imm,u_int rt) |
355 | { |
356 | assem_debug("movn %s,#%#x,lsl #16\n", regname[rt], imm); |
357 | output_w32(0x12a00000 | imm16_rd(imm, rt)); |
358 | } |
359 | |
360 | static void emit_movk(u_int imm,u_int rt) |
361 | { |
362 | assem_debug("movk %s,#%#x\n", regname[rt], imm); |
363 | output_w32(0x72800000 | imm16_rd(imm, rt)); |
364 | } |
365 | |
366 | static void emit_movk_lsl16(u_int imm,u_int rt) |
367 | { |
368 | assert(imm<65536); |
3968e69e |
369 | assem_debug("movk %s,#%#x,lsl #16\n", regname[rt], imm); |
d1e4ebd9 |
370 | output_w32(0x72a00000 | imm16_rd(imm, rt)); |
be516ebe |
371 | } |
372 | |
373 | static void emit_zeroreg(u_int rt) |
374 | { |
d1e4ebd9 |
375 | emit_movz(0, rt); |
be516ebe |
376 | } |
377 | |
be516ebe |
378 | static void emit_movimm(u_int imm, u_int rt) |
379 | { |
d1e4ebd9 |
380 | if (imm < 65536) |
381 | emit_movz(imm, rt); |
382 | else if ((~imm) < 65536) |
383 | emit_movn(~imm, rt); |
384 | else if ((imm&0xffff) == 0) |
385 | emit_movz_lsl16(imm >> 16, rt); |
386 | else if (((~imm)&0xffff) == 0) |
387 | emit_movn_lsl16(~imm >> 16, rt); |
388 | else if (is_rotated_mask(imm)) { |
389 | u_int immr, imms; |
390 | gen_logical_imm(imm, &immr, &imms); |
391 | assem_debug("orr %s,wzr,#%#x\n", regname[rt], imm); |
392 | output_w32(0x32000000 | n_immr_imms_rn_rd(0, immr, imms, WZR, rt)); |
393 | } |
be516ebe |
394 | else { |
d1e4ebd9 |
395 | emit_movz(imm & 0xffff, rt); |
396 | emit_movk_lsl16(imm >> 16, rt); |
be516ebe |
397 | } |
398 | } |
399 | |
aaece508 |
400 | static void emit_movimm64(uint64_t imm, u_int rt) |
401 | { |
402 | u_int shift, op, imm16, insns = 0; |
403 | for (shift = 0; shift < 4; shift++) { |
404 | imm16 = (imm >> shift * 16) & 0xffff; |
405 | if (!imm16) |
406 | continue; |
407 | op = insns ? 0xf2800000 : 0xd2800000; |
408 | assem_debug("mov%c %s,#%#x", insns ? 'k' : 'z', regname64[rt], imm16); |
409 | if (shift) |
410 | assem_debug(",lsl #%u", shift * 16); |
411 | assem_debug("\n"); |
412 | output_w32(op | (shift << 21) | imm16_rd(imm16, rt)); |
413 | insns++; |
414 | } |
415 | if (!insns) { |
416 | assem_debug("movz %s,#0\n", regname64[rt]); |
417 | output_w32(0xd2800000 | imm16_rd(0, rt)); |
418 | } |
419 | } |
420 | |
687b4580 |
421 | static void emit_readword(void *addr, u_int rt) |
422 | { |
423 | uintptr_t offset = (u_char *)addr - (u_char *)&dynarec_local; |
424 | if (!(offset & 3) && offset <= 16380) { |
425 | assem_debug("ldr %s,[x%d+%#lx]\n", regname[rt], FP, offset); |
426 | output_w32(0xb9400000 | imm12_rn_rd(offset >> 2, FP, rt)); |
427 | } |
428 | else |
3968e69e |
429 | abort(); |
687b4580 |
430 | } |
431 | |
d1e4ebd9 |
432 | static void emit_readdword(void *addr, u_int rt) |
433 | { |
434 | uintptr_t offset = (u_char *)addr - (u_char *)&dynarec_local; |
435 | if (!(offset & 7) && offset <= 32760) { |
436 | assem_debug("ldr %s,[x%d+%#lx]\n", regname64[rt], FP, offset); |
437 | output_w32(0xf9400000 | imm12_rn_rd(offset >> 3, FP, rt)); |
438 | } |
3968e69e |
439 | else |
440 | abort(); |
441 | } |
39b71d9a |
442 | #define emit_readptr emit_readdword |
3968e69e |
443 | |
444 | static void emit_readshword(void *addr, u_int rt) |
445 | { |
446 | uintptr_t offset = (u_char *)addr - (u_char *)&dynarec_local; |
447 | if (!(offset & 1) && offset <= 8190) { |
448 | assem_debug("ldrsh %s,[x%d+%#lx]\n", regname[rt], FP, offset); |
449 | output_w32(0x79c00000 | imm12_rn_rd(offset >> 1, FP, rt)); |
450 | } |
d1e4ebd9 |
451 | else |
452 | assert(0); |
453 | } |
454 | |
be516ebe |
455 | static void emit_loadreg(u_int r, u_int hr) |
456 | { |
d1e4ebd9 |
457 | int is64 = 0; |
be516ebe |
458 | if (r == 0) |
459 | emit_zeroreg(hr); |
460 | else { |
33788798 |
461 | void *addr; |
be516ebe |
462 | switch (r) { |
7c3a5182 |
463 | //case HIREG: addr = &hi; break; |
464 | //case LOREG: addr = &lo; break; |
be516ebe |
465 | case CCREG: addr = &cycle_count; break; |
bc7c5acb |
466 | case CSREG: addr = &psxRegs.CP0.n.SR; break; |
d1e4ebd9 |
467 | case INVCP: addr = &invc_ptr; is64 = 1; break; |
37387d8b |
468 | case ROREG: addr = &ram_offset; is64 = 1; break; |
33788798 |
469 | default: |
470 | assert(r < 34); |
471 | addr = &psxRegs.GPR.r[r]; |
472 | break; |
be516ebe |
473 | } |
d1e4ebd9 |
474 | if (is64) |
475 | emit_readdword(addr, hr); |
476 | else |
477 | emit_readword(addr, hr); |
be516ebe |
478 | } |
479 | } |
480 | |
687b4580 |
481 | static void emit_writeword(u_int rt, void *addr) |
482 | { |
483 | uintptr_t offset = (u_char *)addr - (u_char *)&dynarec_local; |
484 | if (!(offset & 3) && offset <= 16380) { |
485 | assem_debug("str %s,[x%d+%#lx]\n", regname[rt], FP, offset); |
486 | output_w32(0xb9000000 | imm12_rn_rd(offset >> 2, FP, rt)); |
487 | } |
488 | else |
489 | assert(0); |
490 | } |
491 | |
d1e4ebd9 |
492 | static void emit_writedword(u_int rt, void *addr) |
493 | { |
494 | uintptr_t offset = (u_char *)addr - (u_char *)&dynarec_local; |
495 | if (!(offset & 7) && offset <= 32760) { |
496 | assem_debug("str %s,[x%d+%#lx]\n", regname64[rt], FP, offset); |
3968e69e |
497 | output_w32(0xf9000000 | imm12_rn_rd(offset >> 3, FP, rt)); |
d1e4ebd9 |
498 | } |
499 | else |
3968e69e |
500 | abort(); |
d1e4ebd9 |
501 | } |
502 | |
687b4580 |
503 | static void emit_storereg(u_int r, u_int hr) |
be516ebe |
504 | { |
505 | assert(r < 64); |
7c3a5182 |
506 | void *addr = &psxRegs.GPR.r[r]; |
be516ebe |
507 | switch (r) { |
7c3a5182 |
508 | //case HIREG: addr = &hi; break; |
509 | //case LOREG: addr = &lo; break; |
be516ebe |
510 | case CCREG: addr = &cycle_count; break; |
7c3a5182 |
511 | default: assert(r < 34); break; |
be516ebe |
512 | } |
687b4580 |
513 | emit_writeword(hr, addr); |
be516ebe |
514 | } |
515 | |
516 | static void emit_test(u_int rs, u_int rt) |
517 | { |
d1e4ebd9 |
518 | assem_debug("tst %s,%s\n", regname[rs], regname[rt]); |
519 | output_w32(0x6a000000 | rm_rn_rd(rt, rs, WZR)); |
be516ebe |
520 | } |
521 | |
d1e4ebd9 |
522 | static void emit_testimm(u_int rs, u_int imm) |
be516ebe |
523 | { |
d1e4ebd9 |
524 | u_int immr, imms; |
687b4580 |
525 | assem_debug("tst %s,#%#x\n", regname[rs], imm); |
d1e4ebd9 |
526 | assert(is_rotated_mask(imm)); // good enough for PCSX |
527 | gen_logical_imm(imm, &immr, &imms); |
3968e69e |
528 | output_w32(0x72000000 | n_immr_imms_rn_rd(0, immr, imms, rs, WZR)); |
be516ebe |
529 | } |
530 | |
531 | static void emit_not(u_int rs,u_int rt) |
532 | { |
533 | assem_debug("mvn %s,%s\n",regname[rt],regname[rs]); |
d1e4ebd9 |
534 | output_w32(0x2a200000 | rm_rn_rd(rs, WZR, rt)); |
be516ebe |
535 | } |
536 | |
be516ebe |
537 | static void emit_and(u_int rs1,u_int rs2,u_int rt) |
538 | { |
539 | assem_debug("and %s,%s,%s\n",regname[rt],regname[rs1],regname[rs2]); |
d1e4ebd9 |
540 | output_w32(0x0a000000 | rm_rn_rd(rs2, rs1, rt)); |
be516ebe |
541 | } |
542 | |
543 | static void emit_or(u_int rs1,u_int rs2,u_int rt) |
544 | { |
545 | assem_debug("orr %s,%s,%s\n",regname[rt],regname[rs1],regname[rs2]); |
d1e4ebd9 |
546 | output_w32(0x2a000000 | rm_rn_rd(rs2, rs1, rt)); |
be516ebe |
547 | } |
548 | |
3968e69e |
549 | static void emit_bic(u_int rs1,u_int rs2,u_int rt) |
550 | { |
551 | assem_debug("bic %s,%s,%s\n",regname[rt],regname[rs1],regname[rs2]); |
552 | output_w32(0x0a200000 | rm_rn_rd(rs2, rs1, rt)); |
553 | } |
554 | |
be516ebe |
555 | static void emit_orrshl_imm(u_int rs,u_int imm,u_int rt) |
556 | { |
be516ebe |
557 | assem_debug("orr %s,%s,%s,lsl #%d\n",regname[rt],regname[rt],regname[rs],imm); |
d1e4ebd9 |
558 | output_w32(0x2a000000 | rm_imm6_rn_rd(rs, imm, rt, rt)); |
be516ebe |
559 | } |
560 | |
561 | static void emit_orrshr_imm(u_int rs,u_int imm,u_int rt) |
562 | { |
be516ebe |
563 | assem_debug("orr %s,%s,%s,lsr #%d\n",regname[rt],regname[rt],regname[rs],imm); |
d1e4ebd9 |
564 | output_w32(0x2a400000 | rm_imm6_rn_rd(rs, imm, rt, rt)); |
be516ebe |
565 | } |
566 | |
3968e69e |
567 | static void emit_bicsar_imm(u_int rs,u_int imm,u_int rt) |
568 | { |
569 | assem_debug("bic %s,%s,%s,asr #%d\n",regname[rt],regname[rt],regname[rs],imm); |
570 | output_w32(0x0aa00000 | rm_imm6_rn_rd(rs, imm, rt, rt)); |
571 | } |
572 | |
be516ebe |
573 | static void emit_xor(u_int rs1,u_int rs2,u_int rt) |
574 | { |
575 | assem_debug("eor %s,%s,%s\n",regname[rt],regname[rs1],regname[rs2]); |
d1e4ebd9 |
576 | output_w32(0x4a000000 | rm_rn_rd(rs2, rs1, rt)); |
be516ebe |
577 | } |
578 | |
3968e69e |
579 | static void emit_xorsar_imm(u_int rs1, u_int rs2, u_int imm, u_int rt) |
580 | { |
581 | assem_debug("eor %s,%s,%s,asr #%d\n",regname[rt],regname[rs1],regname[rs2],imm); |
582 | output_w32(0x4a800000 | rm_imm6_rn_rd(rs2, imm, rs1, rt)); |
583 | } |
584 | |
d1e4ebd9 |
585 | static void emit_addimm_s(u_int s, u_int is64, u_int rs, uintptr_t imm, u_int rt) |
be516ebe |
586 | { |
d1e4ebd9 |
587 | unused const char *st = s ? "s" : ""; |
588 | s = s ? 0x20000000 : 0; |
589 | is64 = is64 ? 0x80000000 : 0; |
687b4580 |
590 | if (imm < 4096) { |
d1e4ebd9 |
591 | assem_debug("add%s %s,%s,%#lx\n", st, regname[rt], regname[rs], imm); |
592 | output_w32(0x11000000 | is64 | s | imm12_rn_rd(imm, rs, rt)); |
687b4580 |
593 | } |
594 | else if (-imm < 4096) { |
3968e69e |
595 | assem_debug("sub%s %s,%s,%#lx\n", st, regname[rt], regname[rs], -imm); |
d1e4ebd9 |
596 | output_w32(0x51000000 | is64 | s | imm12_rn_rd(-imm, rs, rt)); |
597 | } |
598 | else if (imm < 16777216) { |
599 | assem_debug("add %s,%s,#%#lx\n",regname[rt],regname[rt],imm&0xfff000); |
600 | output_w32(0x11400000 | is64 | imm12_rn_rd(imm >> 12, rs, rt)); |
601 | if ((imm & 0xfff) || s) { |
602 | assem_debug("add%s %s,%s,#%#lx\n",st,regname[rt],regname[rs],imm&0xfff); |
3968e69e |
603 | output_w32(0x11000000 | is64 | s | imm12_rn_rd(imm & 0xfff, rt, rt)); |
d1e4ebd9 |
604 | } |
605 | } |
606 | else if (-imm < 16777216) { |
607 | assem_debug("sub %s,%s,#%#lx\n",regname[rt],regname[rt],-imm&0xfff000); |
608 | output_w32(0x51400000 | is64 | imm12_rn_rd(-imm >> 12, rs, rt)); |
609 | if ((imm & 0xfff) || s) { |
610 | assem_debug("sub%s %s,%s,#%#lx\n",st,regname[rt],regname[rs],-imm&0xfff); |
611 | output_w32(0x51000000 | is64 | s | imm12_rn_rd(-imm & 0xfff, rt, rt)); |
612 | } |
687b4580 |
613 | } |
614 | else |
3968e69e |
615 | abort(); |
be516ebe |
616 | } |
617 | |
d1e4ebd9 |
618 | static void emit_addimm(u_int rs, uintptr_t imm, u_int rt) |
619 | { |
9b495f6e |
620 | if (imm == 0) { |
621 | emit_mov(rs, rt); |
622 | return; |
623 | } |
d1e4ebd9 |
624 | emit_addimm_s(0, 0, rs, imm, rt); |
625 | } |
626 | |
627 | static void emit_addimm64(u_int rs, uintptr_t imm, u_int rt) |
628 | { |
629 | emit_addimm_s(0, 1, rs, imm, rt); |
630 | } |
631 | |
bc7c5acb |
632 | static void emit_addimm_ptr(u_int rs, uintptr_t imm, u_int rt) |
633 | { |
634 | emit_addimm64(rs, imm, rt); |
635 | } |
636 | |
be516ebe |
637 | static void emit_addimm_and_set_flags(int imm, u_int rt) |
638 | { |
d1e4ebd9 |
639 | emit_addimm_s(1, 0, rt, imm, rt); |
be516ebe |
640 | } |
641 | |
d1e4ebd9 |
642 | static void emit_logicop_imm(u_int op, u_int rs, u_int imm, u_int rt) |
be516ebe |
643 | { |
d1e4ebd9 |
644 | const char *names[] = { "and", "orr", "eor", "ands" }; |
645 | const char *name = names[op]; |
646 | u_int immr, imms; |
647 | op = op << 29; |
648 | if (is_rotated_mask(imm)) { |
649 | gen_logical_imm(imm, &immr, &imms); |
650 | assem_debug("%s %s,%s,#%#x\n", name, regname[rt], regname[rs], imm); |
651 | output_w32(op | 0x12000000 | n_immr_imms_rn_rd(0, immr, imms, rs, rt)); |
652 | } |
653 | else { |
654 | if (rs == HOST_TEMPREG || rt != HOST_TEMPREG) |
655 | host_tempreg_acquire(); |
656 | emit_movimm(imm, HOST_TEMPREG); |
657 | assem_debug("%s %s,%s,%s\n", name, regname[rt], regname[rs], regname[HOST_TEMPREG]); |
658 | output_w32(op | 0x0a000000 | rm_rn_rd(HOST_TEMPREG, rs, rt)); |
659 | if (rs == HOST_TEMPREG || rt != HOST_TEMPREG) |
660 | host_tempreg_release(); |
661 | } |
662 | (void)name; |
be516ebe |
663 | } |
664 | |
d1e4ebd9 |
665 | static void emit_andimm(u_int rs, u_int imm, u_int rt) |
be516ebe |
666 | { |
d1e4ebd9 |
667 | if (imm == 0) |
668 | emit_zeroreg(rt); |
669 | else |
670 | emit_logicop_imm(0, rs, imm, rt); |
be516ebe |
671 | } |
672 | |
d1e4ebd9 |
673 | static void emit_orimm(u_int rs, u_int imm, u_int rt) |
be516ebe |
674 | { |
d1e4ebd9 |
675 | if (imm == 0) { |
676 | if (rs != rt) |
677 | emit_mov(rs, rt); |
678 | } |
679 | else |
680 | emit_logicop_imm(1, rs, imm, rt); |
be516ebe |
681 | } |
682 | |
d1e4ebd9 |
683 | static void emit_xorimm(u_int rs, u_int imm, u_int rt) |
be516ebe |
684 | { |
d1e4ebd9 |
685 | if (imm == 0) { |
686 | if (rs != rt) |
687 | emit_mov(rs, rt); |
688 | } |
689 | else |
690 | emit_logicop_imm(2, rs, imm, rt); |
be516ebe |
691 | } |
692 | |
d1e4ebd9 |
693 | static void emit_sbfm(u_int rs,u_int imm,u_int rt) |
be516ebe |
694 | { |
d1e4ebd9 |
695 | assem_debug("sbfm %s,%s,#0,#%d\n",regname[rt],regname[rs],imm); |
696 | output_w32(0x13000000 | n_immr_imms_rn_rd(0, 0, imm, rs, rt)); |
be516ebe |
697 | } |
698 | |
d1e4ebd9 |
699 | static void emit_ubfm(u_int rs,u_int imm,u_int rt) |
be516ebe |
700 | { |
d1e4ebd9 |
701 | assem_debug("ubfm %s,%s,#0,#%d\n",regname[rt],regname[rs],imm); |
702 | output_w32(0x53000000 | n_immr_imms_rn_rd(0, 0, imm, rs, rt)); |
be516ebe |
703 | } |
704 | |
705 | static void emit_shlimm(u_int rs,u_int imm,u_int rt) |
706 | { |
be516ebe |
707 | assem_debug("lsl %s,%s,#%d\n",regname[rt],regname[rs],imm); |
d1e4ebd9 |
708 | output_w32(0x53000000 | n_immr_imms_rn_rd(0, (31-imm)+1, 31-imm, rs, rt)); |
be516ebe |
709 | } |
710 | |
3968e69e |
711 | static void emit_shrimm(u_int rs,u_int imm,u_int rt) |
be516ebe |
712 | { |
3968e69e |
713 | assem_debug("lsr %s,%s,#%d\n",regname[rt],regname[rs],imm); |
714 | output_w32(0x53000000 | n_immr_imms_rn_rd(0, imm, 31, rs, rt)); |
be516ebe |
715 | } |
716 | |
3968e69e |
717 | static void emit_shrimm64(u_int rs,u_int imm,u_int rt) |
be516ebe |
718 | { |
be516ebe |
719 | assem_debug("lsr %s,%s,#%d\n",regname[rt],regname[rs],imm); |
3968e69e |
720 | output_w32(0xd3400000 | n_immr_imms_rn_rd(0, imm, 63, rs, rt)); |
be516ebe |
721 | } |
722 | |
723 | static void emit_sarimm(u_int rs,u_int imm,u_int rt) |
724 | { |
be516ebe |
725 | assem_debug("asr %s,%s,#%d\n",regname[rt],regname[rs],imm); |
d1e4ebd9 |
726 | output_w32(0x13000000 | n_immr_imms_rn_rd(0, imm, 31, rs, rt)); |
be516ebe |
727 | } |
728 | |
729 | static void emit_rorimm(u_int rs,u_int imm,u_int rt) |
730 | { |
3968e69e |
731 | assem_debug("ror %s,%s,#%d\n",regname[rt],regname[rs],imm); |
d1e4ebd9 |
732 | output_w32(0x13800000 | rm_imm6_rn_rd(rs, imm, rs, rt)); |
be516ebe |
733 | } |
734 | |
735 | static void emit_signextend16(u_int rs, u_int rt) |
736 | { |
737 | assem_debug("sxth %s,%s\n", regname[rt], regname[rs]); |
d1e4ebd9 |
738 | output_w32(0x13000000 | n_immr_imms_rn_rd(0, 0, 15, rs, rt)); |
be516ebe |
739 | } |
740 | |
d1e4ebd9 |
741 | static void emit_shl(u_int rs,u_int rshift,u_int rt) |
be516ebe |
742 | { |
3968e69e |
743 | assem_debug("lsl %s,%s,%s\n",regname[rt],regname[rs],regname[rshift]); |
d1e4ebd9 |
744 | output_w32(0x1ac02000 | rm_rn_rd(rshift, rs, rt)); |
be516ebe |
745 | } |
746 | |
d1e4ebd9 |
747 | static void emit_shr(u_int rs,u_int rshift,u_int rt) |
be516ebe |
748 | { |
d1e4ebd9 |
749 | assem_debug("lsr %s,%s,%s\n",regname[rt],regname[rs],regname[rshift]); |
750 | output_w32(0x1ac02400 | rm_rn_rd(rshift, rs, rt)); |
be516ebe |
751 | } |
752 | |
d1e4ebd9 |
753 | static void emit_sar(u_int rs,u_int rshift,u_int rt) |
be516ebe |
754 | { |
d1e4ebd9 |
755 | assem_debug("asr %s,%s,%s\n",regname[rt],regname[rs],regname[rshift]); |
756 | output_w32(0x1ac02800 | rm_rn_rd(rshift, rs, rt)); |
be516ebe |
757 | } |
758 | |
d1e4ebd9 |
759 | static void emit_cmpimm(u_int rs, u_int imm) |
be516ebe |
760 | { |
d1e4ebd9 |
761 | if (imm < 4096) { |
762 | assem_debug("cmp %s,%#x\n", regname[rs], imm); |
763 | output_w32(0x71000000 | imm12_rn_rd(imm, rs, WZR)); |
764 | } |
765 | else if (-imm < 4096) { |
766 | assem_debug("cmn %s,%#x\n", regname[rs], imm); |
767 | output_w32(0x31000000 | imm12_rn_rd(-imm, rs, WZR)); |
768 | } |
769 | else if (imm < 16777216 && !(imm & 0xfff)) { |
3968e69e |
770 | assem_debug("cmp %s,#%#x\n", regname[rs], imm); |
d1e4ebd9 |
771 | output_w32(0x71400000 | imm12_rn_rd(imm >> 12, rs, WZR)); |
772 | } |
773 | else { |
774 | host_tempreg_acquire(); |
775 | emit_movimm(imm, HOST_TEMPREG); |
776 | assem_debug("cmp %s,%s\n", regname[rs], regname[HOST_TEMPREG]); |
777 | output_w32(0x6b000000 | rm_rn_rd(HOST_TEMPREG, rs, WZR)); |
778 | host_tempreg_release(); |
779 | } |
be516ebe |
780 | } |
781 | |
d1e4ebd9 |
782 | static void emit_cmov_imm(u_int cond0, u_int cond1, u_int imm, u_int rt) |
be516ebe |
783 | { |
d1e4ebd9 |
784 | assert(imm == 0 || imm == 1); |
785 | assert(cond0 < 0x10); |
786 | assert(cond1 < 0x10); |
787 | if (imm) { |
788 | assem_debug("csinc %s,%s,%s,%s\n",regname[rt],regname[rt],regname[WZR],condname[cond1]); |
789 | output_w32(0x1a800400 | (cond1 << 12) | rm_rn_rd(WZR, rt, rt)); |
790 | } else { |
791 | assem_debug("csel %s,%s,%s,%s\n",regname[rt],regname[WZR],regname[rt],condname[cond0]); |
792 | output_w32(0x1a800000 | (cond0 << 12) | rm_rn_rd(rt, WZR, rt)); |
793 | } |
be516ebe |
794 | } |
795 | |
d1e4ebd9 |
796 | static void emit_cmovne_imm(u_int imm,u_int rt) |
be516ebe |
797 | { |
d1e4ebd9 |
798 | emit_cmov_imm(COND_NE, COND_EQ, imm, rt); |
be516ebe |
799 | } |
800 | |
d1e4ebd9 |
801 | static void emit_cmovl_imm(u_int imm,u_int rt) |
be516ebe |
802 | { |
d1e4ebd9 |
803 | emit_cmov_imm(COND_LT, COND_GE, imm, rt); |
be516ebe |
804 | } |
805 | |
806 | static void emit_cmovb_imm(int imm,u_int rt) |
807 | { |
d1e4ebd9 |
808 | emit_cmov_imm(COND_CC, COND_CS, imm, rt); |
be516ebe |
809 | } |
810 | |
3968e69e |
811 | static void emit_cmoveq_reg(u_int rs,u_int rt) |
be516ebe |
812 | { |
3968e69e |
813 | assem_debug("csel %s,%s,%s,eq\n",regname[rt],regname[rs],regname[rt]); |
814 | output_w32(0x1a800000 | (COND_EQ << 12) | rm_rn_rd(rt, rs, rt)); |
be516ebe |
815 | } |
816 | |
817 | static void emit_cmovne_reg(u_int rs,u_int rt) |
818 | { |
d1e4ebd9 |
819 | assem_debug("csel %s,%s,%s,ne\n",regname[rt],regname[rs],regname[rt]); |
820 | output_w32(0x1a800000 | (COND_NE << 12) | rm_rn_rd(rt, rs, rt)); |
be516ebe |
821 | } |
822 | |
823 | static void emit_cmovl_reg(u_int rs,u_int rt) |
824 | { |
d1e4ebd9 |
825 | assem_debug("csel %s,%s,%s,lt\n",regname[rt],regname[rs],regname[rt]); |
826 | output_w32(0x1a800000 | (COND_LT << 12) | rm_rn_rd(rt, rs, rt)); |
be516ebe |
827 | } |
828 | |
e3c6bdb5 |
829 | static void emit_cmovb_reg(u_int rs,u_int rt) |
830 | { |
831 | assem_debug("csel %s,%s,%s,cc\n",regname[rt],regname[rs],regname[rt]); |
832 | output_w32(0x1a800000 | (COND_CC << 12) | rm_rn_rd(rt, rs, rt)); |
833 | } |
834 | |
be516ebe |
835 | static void emit_cmovs_reg(u_int rs,u_int rt) |
836 | { |
d1e4ebd9 |
837 | assem_debug("csel %s,%s,%s,mi\n",regname[rt],regname[rs],regname[rt]); |
838 | output_w32(0x1a800000 | (COND_MI << 12) | rm_rn_rd(rt, rs, rt)); |
be516ebe |
839 | } |
840 | |
3968e69e |
841 | static void emit_csinvle_reg(u_int rs1,u_int rs2,u_int rt) |
842 | { |
843 | assem_debug("csinv %s,%s,%s,le\n",regname[rt],regname[rs1],regname[rs2]); |
844 | output_w32(0x5a800000 | (COND_LE << 12) | rm_rn_rd(rs2, rs1, rt)); |
845 | } |
846 | |
be516ebe |
847 | static void emit_slti32(u_int rs,int imm,u_int rt) |
848 | { |
849 | if(rs!=rt) emit_zeroreg(rt); |
850 | emit_cmpimm(rs,imm); |
851 | if(rs==rt) emit_movimm(0,rt); |
852 | emit_cmovl_imm(1,rt); |
853 | } |
854 | |
855 | static void emit_sltiu32(u_int rs,int imm,u_int rt) |
856 | { |
857 | if(rs!=rt) emit_zeroreg(rt); |
858 | emit_cmpimm(rs,imm); |
859 | if(rs==rt) emit_movimm(0,rt); |
860 | emit_cmovb_imm(1,rt); |
861 | } |
862 | |
863 | static void emit_cmp(u_int rs,u_int rt) |
864 | { |
865 | assem_debug("cmp %s,%s\n",regname[rs],regname[rt]); |
d1e4ebd9 |
866 | output_w32(0x6b000000 | rm_rn_rd(rt, rs, WZR)); |
be516ebe |
867 | } |
868 | |
882a08fc |
869 | static void emit_cmpcs(u_int rs,u_int rt) |
870 | { |
871 | assem_debug("ccmp %s,%s,#0,cs\n",regname[rs],regname[rt]); |
872 | output_w32(0x7a400000 | (COND_CS << 12) | rm_rn_rd(rt, rs, 0)); |
873 | } |
874 | |
be516ebe |
875 | static void emit_set_gz32(u_int rs, u_int rt) |
876 | { |
877 | //assem_debug("set_gz32\n"); |
878 | emit_cmpimm(rs,1); |
879 | emit_movimm(1,rt); |
880 | emit_cmovl_imm(0,rt); |
881 | } |
882 | |
883 | static void emit_set_nz32(u_int rs, u_int rt) |
884 | { |
885 | //assem_debug("set_nz32\n"); |
d1e4ebd9 |
886 | if(rs!=rt) emit_mov(rs,rt); |
887 | emit_test(rs,rs); |
888 | emit_cmovne_imm(1,rt); |
be516ebe |
889 | } |
890 | |
891 | static void emit_set_if_less32(u_int rs1, u_int rs2, u_int rt) |
892 | { |
893 | //assem_debug("set if less (%%%s,%%%s),%%%s\n",regname[rs1],regname[rs2],regname[rt]); |
894 | if(rs1!=rt&&rs2!=rt) emit_zeroreg(rt); |
895 | emit_cmp(rs1,rs2); |
896 | if(rs1==rt||rs2==rt) emit_movimm(0,rt); |
897 | emit_cmovl_imm(1,rt); |
898 | } |
899 | |
900 | static void emit_set_if_carry32(u_int rs1, u_int rs2, u_int rt) |
901 | { |
902 | //assem_debug("set if carry (%%%s,%%%s),%%%s\n",regname[rs1],regname[rs2],regname[rt]); |
903 | if(rs1!=rt&&rs2!=rt) emit_zeroreg(rt); |
904 | emit_cmp(rs1,rs2); |
905 | if(rs1==rt||rs2==rt) emit_movimm(0,rt); |
906 | emit_cmovb_imm(1,rt); |
907 | } |
908 | |
2a014d73 |
909 | static int can_jump_or_call(const void *a) |
910 | { |
911 | intptr_t diff = (u_char *)a - out; |
912 | return (-134217728 <= diff && diff <= 134217727); |
913 | } |
914 | |
d1e4ebd9 |
915 | static void emit_call(const void *a) |
be516ebe |
916 | { |
d1e4ebd9 |
917 | intptr_t diff = (u_char *)a - out; |
918 | assem_debug("bl %p (%p+%lx)%s\n", a, out, diff, func_name(a)); |
687b4580 |
919 | assert(!(diff & 3)); |
920 | if (-134217728 <= diff && diff <= 134217727) |
921 | output_w32(0x94000000 | ((diff >> 2) & 0x03ffffff)); |
922 | else |
3968e69e |
923 | abort(); |
be516ebe |
924 | } |
925 | |
d1e4ebd9 |
926 | static void emit_jmp(const void *a) |
be516ebe |
927 | { |
d1e4ebd9 |
928 | assem_debug("b %p (%p+%lx)%s\n", a, out, (u_char *)a - out, func_name(a)); |
929 | u_int offset = genjmp(a); |
930 | output_w32(0x14000000 | offset); |
be516ebe |
931 | } |
932 | |
d1e4ebd9 |
933 | static void emit_jne(const void *a) |
be516ebe |
934 | { |
d1e4ebd9 |
935 | assem_debug("bne %p\n", a); |
936 | u_int offset = genjmpcc(a); |
937 | output_w32(0x54000000 | (offset << 5) | COND_NE); |
be516ebe |
938 | } |
939 | |
7c3a5182 |
940 | static void emit_jeq(const void *a) |
be516ebe |
941 | { |
d1e4ebd9 |
942 | assem_debug("beq %p\n", a); |
943 | u_int offset = genjmpcc(a); |
944 | output_w32(0x54000000 | (offset << 5) | COND_EQ); |
be516ebe |
945 | } |
946 | |
7c3a5182 |
947 | static void emit_js(const void *a) |
be516ebe |
948 | { |
d1e4ebd9 |
949 | assem_debug("bmi %p\n", a); |
950 | u_int offset = genjmpcc(a); |
951 | output_w32(0x54000000 | (offset << 5) | COND_MI); |
be516ebe |
952 | } |
953 | |
7c3a5182 |
954 | static void emit_jns(const void *a) |
be516ebe |
955 | { |
d1e4ebd9 |
956 | assem_debug("bpl %p\n", a); |
957 | u_int offset = genjmpcc(a); |
958 | output_w32(0x54000000 | (offset << 5) | COND_PL); |
be516ebe |
959 | } |
960 | |
7c3a5182 |
961 | static void emit_jl(const void *a) |
be516ebe |
962 | { |
d1e4ebd9 |
963 | assem_debug("blt %p\n", a); |
964 | u_int offset = genjmpcc(a); |
965 | output_w32(0x54000000 | (offset << 5) | COND_LT); |
be516ebe |
966 | } |
967 | |
7c3a5182 |
968 | static void emit_jge(const void *a) |
be516ebe |
969 | { |
d1e4ebd9 |
970 | assem_debug("bge %p\n", a); |
971 | u_int offset = genjmpcc(a); |
972 | output_w32(0x54000000 | (offset << 5) | COND_GE); |
be516ebe |
973 | } |
974 | |
7c3a5182 |
975 | static void emit_jno(const void *a) |
be516ebe |
976 | { |
d1e4ebd9 |
977 | assem_debug("bvc %p\n", a); |
978 | u_int offset = genjmpcc(a); |
979 | output_w32(0x54000000 | (offset << 5) | COND_VC); |
be516ebe |
980 | } |
981 | |
7c3a5182 |
982 | static void emit_jc(const void *a) |
be516ebe |
983 | { |
d1e4ebd9 |
984 | assem_debug("bcs %p\n", a); |
985 | u_int offset = genjmpcc(a); |
986 | output_w32(0x54000000 | (offset << 5) | COND_CS); |
be516ebe |
987 | } |
988 | |
3968e69e |
989 | static void emit_cb(u_int isnz, u_int is64, const void *a, u_int r) |
be516ebe |
990 | { |
3968e69e |
991 | assem_debug("cb%sz %s,%p\n", isnz?"n":"", is64?regname64[r]:regname[r], a); |
d1e4ebd9 |
992 | u_int offset = genjmpcc(a); |
3968e69e |
993 | is64 = is64 ? 0x80000000 : 0; |
994 | isnz = isnz ? 0x01000000 : 0; |
995 | output_w32(0x34000000 | is64 | isnz | imm19_rt(offset, r)); |
996 | } |
997 | |
9b495f6e |
998 | static void *emit_cbz(u_int r, const void *a) |
3968e69e |
999 | { |
9b495f6e |
1000 | void *ret = out; |
3968e69e |
1001 | emit_cb(0, 0, a, r); |
9b495f6e |
1002 | return ret; |
be516ebe |
1003 | } |
1004 | |
1005 | static void emit_jmpreg(u_int r) |
1006 | { |
3968e69e |
1007 | assem_debug("br %s\n", regname64[r]); |
d1e4ebd9 |
1008 | output_w32(0xd61f0000 | rm_rn_rd(0, r, 0)); |
be516ebe |
1009 | } |
1010 | |
1011 | static void emit_retreg(u_int r) |
1012 | { |
d1e4ebd9 |
1013 | assem_debug("ret %s\n", r == LR ? "" : regname64[r]); |
be516ebe |
1014 | output_w32(0xd65f0000 | rm_rn_rd(0, r, 0)); |
1015 | } |
1016 | |
1017 | static void emit_ret(void) |
1018 | { |
1019 | emit_retreg(LR); |
1020 | } |
1021 | |
d1e4ebd9 |
1022 | static void emit_adr(void *addr, u_int rt) |
1023 | { |
1024 | intptr_t offset = (u_char *)addr - out; |
1025 | assert(-1048576 <= offset && offset < 1048576); |
3968e69e |
1026 | assert(rt < 31); |
d1e4ebd9 |
1027 | assem_debug("adr x%d,#%#lx\n", rt, offset); |
1028 | output_w32(0x10000000 | ((offset&0x3) << 29) | (((offset>>2)&0x7ffff) << 5) | rt); |
1029 | } |
1030 | |
3968e69e |
1031 | static void emit_adrp(void *addr, u_int rt) |
1032 | { |
1033 | intptr_t offset = ((intptr_t)addr & ~0xfffl) - ((intptr_t)out & ~0xfffl); |
1034 | assert(-4294967296l <= offset && offset < 4294967296l); |
1035 | assert(rt < 31); |
1036 | offset >>= 12; |
1037 | assem_debug("adrp %s,#%#lx(000)\n",regname64[rt],offset); |
1038 | output_w32(0x90000000 | ((offset&0x3)<<29) | (((offset>>2)&0x7ffff)<<5) | rt); |
1039 | } |
1040 | |
be516ebe |
1041 | static void emit_readword_indexed(int offset, u_int rs, u_int rt) |
1042 | { |
d1e4ebd9 |
1043 | assem_debug("ldur %s,[%s+%#x]\n",regname[rt],regname64[rs],offset); |
1044 | assert(-256 <= offset && offset < 256); |
1045 | output_w32(0xb8400000 | imm9_rn_rt(offset&0x1ff, rs, rt)); |
1046 | } |
1047 | |
1048 | static void emit_strb_dualindexed(u_int rs1, u_int rs2, u_int rt) |
1049 | { |
1050 | assem_debug("strb %s, [%s,%s]\n",regname[rt],regname64[rs1],regname[rs2]); |
1051 | output_w32(0x38204800 | rm_rn_rd(rs2, rs1, rt)); |
1052 | } |
1053 | |
1054 | static void emit_strh_dualindexed(u_int rs1, u_int rs2, u_int rt) |
1055 | { |
1056 | assem_debug("strh %s, [%s,%s]\n",regname[rt],regname64[rs1],regname[rs2]); |
1057 | output_w32(0x78204800 | rm_rn_rd(rs2, rs1, rt)); |
1058 | } |
1059 | |
1060 | static void emit_str_dualindexed(u_int rs1, u_int rs2, u_int rt) |
1061 | { |
1062 | assem_debug("str %s, [%s,%s]\n",regname[rt],regname64[rs1],regname[rs2]); |
1063 | output_w32(0xb8204800 | rm_rn_rd(rs2, rs1, rt)); |
1064 | } |
1065 | |
1066 | static void emit_readdword_dualindexedx8(u_int rs1, u_int rs2, u_int rt) |
1067 | { |
1068 | assem_debug("ldr %s, [%s,%s, uxtw #3]\n",regname64[rt],regname64[rs1],regname[rs2]); |
1069 | output_w32(0xf8605800 | rm_rn_rd(rs2, rs1, rt)); |
1070 | } |
39b71d9a |
1071 | #define emit_readptr_dualindexedx_ptrlen emit_readdword_dualindexedx8 |
d1e4ebd9 |
1072 | |
1073 | static void emit_ldrb_dualindexed(u_int rs1, u_int rs2, u_int rt) |
1074 | { |
1075 | assem_debug("ldrb %s, [%s,%s]\n",regname[rt],regname64[rs1],regname[rs2]); |
1076 | output_w32(0x38604800 | rm_rn_rd(rs2, rs1, rt)); |
1077 | } |
1078 | |
1079 | static void emit_ldrsb_dualindexed(u_int rs1, u_int rs2, u_int rt) |
1080 | { |
1081 | assem_debug("ldrsb %s, [%s,%s]\n",regname[rt],regname64[rs1],regname[rs2]); |
1082 | output_w32(0x38a04800 | rm_rn_rd(rs2, rs1, rt)); |
1083 | } |
1084 | |
1085 | static void emit_ldrh_dualindexed(u_int rs1, u_int rs2, u_int rt) |
1086 | { |
1087 | assem_debug("ldrh %s, [%s,%s, uxtw]\n",regname[rt],regname64[rs1],regname[rs2]); |
1088 | output_w32(0x78604800 | rm_rn_rd(rs2, rs1, rt)); |
1089 | } |
1090 | |
1091 | static void emit_ldrsh_dualindexed(u_int rs1, u_int rs2, u_int rt) |
1092 | { |
1093 | assem_debug("ldrsh %s, [%s,%s, uxtw]\n",regname[rt],regname64[rs1],regname[rs2]); |
1094 | output_w32(0x78a04800 | rm_rn_rd(rs2, rs1, rt)); |
1095 | } |
1096 | |
1097 | static void emit_ldr_dualindexed(u_int rs1, u_int rs2, u_int rt) |
1098 | { |
1099 | assem_debug("ldr %s, [%s,%s, uxtw]\n",regname[rt],regname64[rs1],regname[rs2]); |
1100 | output_w32(0xb8604800 | rm_rn_rd(rs2, rs1, rt)); |
be516ebe |
1101 | } |
1102 | |
be516ebe |
1103 | static void emit_movsbl_indexed(int offset, u_int rs, u_int rt) |
1104 | { |
d1e4ebd9 |
1105 | assem_debug("ldursb %s,[%s+%#x]\n",regname[rt],regname64[rs],offset); |
1106 | assert(-256 <= offset && offset < 256); |
1107 | output_w32(0x38c00000 | imm9_rn_rt(offset&0x1ff, rs, rt)); |
be516ebe |
1108 | } |
1109 | |
1110 | static void emit_movswl_indexed(int offset, u_int rs, u_int rt) |
1111 | { |
d1e4ebd9 |
1112 | assem_debug("ldursh %s,[%s+%#x]\n",regname[rt],regname64[rs],offset); |
1113 | assert(-256 <= offset && offset < 256); |
1114 | output_w32(0x78c00000 | imm9_rn_rt(offset&0x1ff, rs, rt)); |
be516ebe |
1115 | } |
1116 | |
1117 | static void emit_movzbl_indexed(int offset, u_int rs, u_int rt) |
1118 | { |
d1e4ebd9 |
1119 | assem_debug("ldurb %s,[%s+%#x]\n",regname[rt],regname64[rs],offset); |
1120 | assert(-256 <= offset && offset < 256); |
1121 | output_w32(0x38400000 | imm9_rn_rt(offset&0x1ff, rs, rt)); |
be516ebe |
1122 | } |
1123 | |
1124 | static void emit_movzwl_indexed(int offset, u_int rs, u_int rt) |
1125 | { |
d1e4ebd9 |
1126 | assem_debug("ldurh %s,[%s+%#x]\n",regname[rt],regname64[rs],offset); |
1127 | assert(-256 <= offset && offset < 256); |
1128 | output_w32(0x78400000 | imm9_rn_rt(offset&0x1ff, rs, rt)); |
be516ebe |
1129 | } |
1130 | |
be516ebe |
1131 | static void emit_writeword_indexed(u_int rt, int offset, u_int rs) |
1132 | { |
3968e69e |
1133 | if (!(offset & 3) && (u_int)offset <= 16380) { |
1134 | assem_debug("str %s,[%s+%#x]\n", regname[rt], regname[rs], offset); |
687b4580 |
1135 | output_w32(0xb9000000 | imm12_rn_rd(offset >> 2, rs, rt)); |
3968e69e |
1136 | } |
1137 | else if (-256 <= offset && offset < 256) { |
1138 | assem_debug("stur %s,[%s+%#x]\n", regname[rt], regname[rs], offset); |
1139 | output_w32(0xb8000000 | imm9_rn_rt(offset & 0x1ff, rs, rt)); |
1140 | } |
687b4580 |
1141 | else |
1142 | assert(0); |
be516ebe |
1143 | } |
1144 | |
1145 | static void emit_writehword_indexed(u_int rt, int offset, u_int rs) |
1146 | { |
3968e69e |
1147 | if (!(offset & 1) && (u_int)offset <= 8190) { |
1148 | assem_debug("strh %s,[%s+%#x]\n", regname[rt], regname64[rs], offset); |
687b4580 |
1149 | output_w32(0x79000000 | imm12_rn_rd(offset >> 1, rs, rt)); |
3968e69e |
1150 | } |
1151 | else if (-256 <= offset && offset < 256) { |
1152 | assem_debug("sturh %s,[%s+%#x]\n", regname[rt], regname64[rs], offset); |
1153 | output_w32(0x78000000 | imm9_rn_rt(offset & 0x1ff, rs, rt)); |
1154 | } |
687b4580 |
1155 | else |
1156 | assert(0); |
be516ebe |
1157 | } |
1158 | |
1159 | static void emit_writebyte_indexed(u_int rt, int offset, u_int rs) |
1160 | { |
3968e69e |
1161 | if ((u_int)offset < 4096) { |
1162 | assem_debug("strb %s,[%s+%#x]\n", regname[rt], regname64[rs], offset); |
687b4580 |
1163 | output_w32(0x39000000 | imm12_rn_rd(offset, rs, rt)); |
3968e69e |
1164 | } |
1165 | else if (-256 <= offset && offset < 256) { |
1166 | assem_debug("sturb %s,[%s+%#x]\n", regname[rt], regname64[rs], offset); |
1167 | output_w32(0x38000000 | imm9_rn_rt(offset & 0x1ff, rs, rt)); |
1168 | } |
687b4580 |
1169 | else |
1170 | assert(0); |
be516ebe |
1171 | } |
1172 | |
3968e69e |
1173 | static void emit_umull(u_int rs1, u_int rs2, u_int rt) |
be516ebe |
1174 | { |
3968e69e |
1175 | assem_debug("umull %s,%s,%s\n",regname64[rt],regname[rs1],regname[rs2]); |
1176 | output_w32(0x9ba00000 | rm_ra_rn_rd(rs2, WZR, rs1, rt)); |
be516ebe |
1177 | } |
1178 | |
3968e69e |
1179 | static void emit_smull(u_int rs1, u_int rs2, u_int rt) |
be516ebe |
1180 | { |
3968e69e |
1181 | assem_debug("smull %s,%s,%s\n",regname64[rt],regname[rs1],regname[rs2]); |
1182 | output_w32(0x9b200000 | rm_ra_rn_rd(rs2, WZR, rs1, rt)); |
1183 | } |
1184 | |
1185 | static void emit_msub(u_int rs1, u_int rs2, u_int rs3, u_int rt) |
1186 | { |
1187 | assem_debug("msub %s,%s,%s,%s\n",regname[rt],regname[rs1],regname[rs2],regname[rs3]); |
1188 | output_w32(0x1b008000 | rm_ra_rn_rd(rs2, rs3, rs1, rt)); |
1189 | } |
1190 | |
1191 | static void emit_sdiv(u_int rs1, u_int rs2, u_int rt) |
1192 | { |
1193 | assem_debug("sdiv %s,%s,%s\n",regname[rt],regname[rs1],regname[rs2]); |
1194 | output_w32(0x1ac00c00 | rm_rn_rd(rs2, rs1, rt)); |
be516ebe |
1195 | } |
1196 | |
3968e69e |
1197 | static void emit_udiv(u_int rs1, u_int rs2, u_int rt) |
1198 | { |
1199 | assem_debug("udiv %s,%s,%s\n",regname[rt],regname[rs1],regname[rs2]); |
1200 | output_w32(0x1ac00800 | rm_rn_rd(rs2, rs1, rt)); |
1201 | } |
1202 | |
1203 | static void emit_clz(u_int rs, u_int rt) |
be516ebe |
1204 | { |
1205 | assem_debug("clz %s,%s\n",regname[rt],regname[rs]); |
3968e69e |
1206 | output_w32(0x5ac01000 | rn_rd(rs, rt)); |
be516ebe |
1207 | } |
1208 | |
be516ebe |
1209 | // special case for checking invalid_code |
9b495f6e |
1210 | static void emit_ldrb_indexedsr12_reg(u_int rbase, u_int r, u_int rt) |
1211 | { |
1212 | emit_shrimm(r, 12, rt); |
1213 | assem_debug("ldrb %s,[%s,%s,uxtw]\n",regname[rt],regname64[rbase],regname[rt]); |
1214 | output_w32(0x38604800 | rm_rn_rd(rt, rbase, rt)); |
be516ebe |
1215 | } |
1216 | |
3968e69e |
1217 | // special for loadlr_assemble, rs2 is destroyed |
1218 | static void emit_bic_lsl(u_int rs1,u_int rs2,u_int shift,u_int rt) |
be516ebe |
1219 | { |
3968e69e |
1220 | emit_shl(rs2, shift, rs2); |
1221 | emit_bic(rs1, rs2, rt); |
be516ebe |
1222 | } |
1223 | |
3968e69e |
1224 | static void emit_bic_lsr(u_int rs1,u_int rs2,u_int shift,u_int rt) |
be516ebe |
1225 | { |
3968e69e |
1226 | emit_shr(rs2, shift, rs2); |
1227 | emit_bic(rs1, rs2, rt); |
be516ebe |
1228 | } |
1229 | |
687b4580 |
1230 | static void emit_ldst(int is_st, int is64, u_int rt, u_int rn, u_int ofs) |
be516ebe |
1231 | { |
687b4580 |
1232 | u_int op = 0xb9000000; |
d1e4ebd9 |
1233 | unused const char *ldst = is_st ? "st" : "ld"; |
1234 | unused char rp = is64 ? 'x' : 'w'; |
687b4580 |
1235 | assem_debug("%sr %c%d,[x%d,#%#x]\n", ldst, rp, rt, rn, ofs); |
1236 | is64 = is64 ? 1 : 0; |
1237 | assert((ofs & ((1 << (2+is64)) - 1)) == 0); |
1238 | ofs = (ofs >> (2+is64)); |
687b4580 |
1239 | if (!is_st) op |= 0x00400000; |
1240 | if (is64) op |= 0x40000000; |
d1e4ebd9 |
1241 | output_w32(op | imm12_rn_rd(ofs, rn, rt)); |
be516ebe |
1242 | } |
1243 | |
687b4580 |
1244 | static void emit_ldstp(int is_st, int is64, u_int rt1, u_int rt2, u_int rn, int ofs) |
be516ebe |
1245 | { |
687b4580 |
1246 | u_int op = 0x29000000; |
d1e4ebd9 |
1247 | unused const char *ldst = is_st ? "st" : "ld"; |
1248 | unused char rp = is64 ? 'x' : 'w'; |
687b4580 |
1249 | assem_debug("%sp %c%d,%c%d,[x%d,#%#x]\n", ldst, rp, rt1, rp, rt2, rn, ofs); |
1250 | is64 = is64 ? 1 : 0; |
1251 | assert((ofs & ((1 << (2+is64)) - 1)) == 0); |
1252 | ofs = (ofs >> (2+is64)); |
1253 | assert(-64 <= ofs && ofs <= 63); |
1254 | ofs &= 0x7f; |
1255 | if (!is_st) op |= 0x00400000; |
1256 | if (is64) op |= 0x80000000; |
d1e4ebd9 |
1257 | output_w32(op | imm7_rt2_rn_rt(ofs, rt2, rn, rt1)); |
687b4580 |
1258 | } |
1259 | |
1260 | static void save_load_regs_all(int is_store, u_int reglist) |
1261 | { |
1262 | int ofs = 0, c = 0; |
1263 | u_int r, pair[2]; |
1264 | for (r = 0; reglist; r++, reglist >>= 1) { |
1265 | if (reglist & 1) |
1266 | pair[c++] = r; |
1267 | if (c == 2) { |
1268 | emit_ldstp(is_store, 1, pair[0], pair[1], SP, SSP_CALLEE_REGS + ofs); |
1269 | ofs += 8 * 2; |
1270 | c = 0; |
1271 | } |
1272 | } |
1273 | if (c) { |
1274 | emit_ldst(is_store, 1, pair[0], SP, SSP_CALLEE_REGS + ofs); |
1275 | ofs += 8; |
1276 | } |
1277 | assert(ofs <= SSP_CALLER_REGS); |
be516ebe |
1278 | } |
1279 | |
1280 | // Save registers before function call |
1281 | static void save_regs(u_int reglist) |
1282 | { |
1283 | reglist &= CALLER_SAVE_REGS; // only save the caller-save registers |
687b4580 |
1284 | save_load_regs_all(1, reglist); |
be516ebe |
1285 | } |
1286 | |
1287 | // Restore registers after function call |
1288 | static void restore_regs(u_int reglist) |
1289 | { |
1290 | reglist &= CALLER_SAVE_REGS; |
687b4580 |
1291 | save_load_regs_all(0, reglist); |
be516ebe |
1292 | } |
1293 | |
1294 | /* Stubs/epilogue */ |
1295 | |
1296 | static void literal_pool(int n) |
1297 | { |
1298 | (void)literals; |
1299 | } |
1300 | |
1301 | static void literal_pool_jumpover(int n) |
1302 | { |
1303 | } |
1304 | |
d1e4ebd9 |
1305 | // parsed by get_pointer, find_extjump_insn |
104df9d3 |
1306 | static void emit_extjump(u_char *addr, u_int target) |
be516ebe |
1307 | { |
d1e4ebd9 |
1308 | assert(((addr[3]&0xfc)==0x14) || ((addr[3]&0xff)==0x54)); // b or b.cond |
be516ebe |
1309 | |
d1e4ebd9 |
1310 | emit_movz(target & 0xffff, 0); |
1311 | emit_movk_lsl16(target >> 16, 0); |
1312 | |
1313 | // addr is in the current recompiled block (max 256k) |
1314 | // offset shouldn't exceed +/-1MB |
1315 | emit_adr(addr, 1); |
104df9d3 |
1316 | emit_far_jump(dyna_linker); |
be516ebe |
1317 | } |
1318 | |
d1e4ebd9 |
1319 | static void check_extjump2(void *src) |
be516ebe |
1320 | { |
d1e4ebd9 |
1321 | u_int *ptr = src; |
1322 | assert((ptr[0] & 0xffe0001f) == 0x52800000); // movz r0, #val |
1323 | (void)ptr; |
be516ebe |
1324 | } |
1325 | |
1326 | // put rt_val into rt, potentially making use of rs with value rs_val |
d1e4ebd9 |
1327 | static void emit_movimm_from(u_int rs_val, u_int rs, u_int rt_val, u_int rt) |
be516ebe |
1328 | { |
d1e4ebd9 |
1329 | int diff = rt_val - rs_val; |
3968e69e |
1330 | if ((-4096 < diff && diff < 4096) |
1331 | || (-16777216 < diff && diff < 16777216 && !(diff & 0xfff))) |
687b4580 |
1332 | emit_addimm(rs, diff, rt); |
3968e69e |
1333 | else if (rt_val == ~rs_val) |
1334 | emit_not(rs, rt); |
d1e4ebd9 |
1335 | else if (is_rotated_mask(rs_val ^ rt_val)) |
1336 | emit_xorimm(rs, rs_val ^ rt_val, rt); |
687b4580 |
1337 | else |
d1e4ebd9 |
1338 | emit_movimm(rt_val, rt); |
be516ebe |
1339 | } |
1340 | |
d1e4ebd9 |
1341 | // return 1 if the above function can do it's job cheaply |
687b4580 |
1342 | static int is_similar_value(u_int v1, u_int v2) |
be516ebe |
1343 | { |
687b4580 |
1344 | int diff = v1 - v2; |
3968e69e |
1345 | return (-4096 < diff && diff < 4096) |
1346 | || (-16777216 < diff && diff < 16777216 && !(diff & 0xfff)) |
1347 | || v1 == ~v2 |
d1e4ebd9 |
1348 | || is_rotated_mask(v1 ^ v2); |
1349 | } |
1350 | |
37387d8b |
1351 | static void emit_movimm_from64(u_int rs_val, u_int rs, uintptr_t rt_val, u_int rt) |
1352 | { |
1353 | if (rt_val < 0x100000000ull) { |
1354 | emit_movimm_from(rs_val, rs, rt_val, rt); |
1355 | return; |
1356 | } |
1357 | // just move the whole thing. At least on Linux all addresses |
1358 | // seem to be 48bit, so 3 insns - not great not terrible |
aaece508 |
1359 | emit_movimm64(rt_val, rt); |
37387d8b |
1360 | } |
1361 | |
1362 | // trashes x2 |
d1e4ebd9 |
1363 | static void pass_args64(u_int a0, u_int a1) |
1364 | { |
1365 | if(a0==1&&a1==0) { |
1366 | // must swap |
1367 | emit_mov64(a0,2); emit_mov64(a1,1); emit_mov64(2,0); |
1368 | } |
1369 | else if(a0!=0&&a1==0) { |
1370 | emit_mov64(a1,1); |
1371 | if (a0>=0) emit_mov64(a0,0); |
1372 | } |
1373 | else { |
1374 | if(a0>=0&&a0!=0) emit_mov64(a0,0); |
1375 | if(a1>=0&&a1!=1) emit_mov64(a1,1); |
1376 | } |
be516ebe |
1377 | } |
1378 | |
d1e4ebd9 |
1379 | static void loadstore_extend(enum stub_type type, u_int rs, u_int rt) |
1380 | { |
1381 | switch(type) { |
1382 | case LOADB_STUB: emit_sbfm(rs, 7, rt); break; |
1383 | case LOADBU_STUB: |
1384 | case STOREB_STUB: emit_ubfm(rs, 7, rt); break; |
1385 | case LOADH_STUB: emit_sbfm(rs, 15, rt); break; |
1386 | case LOADHU_STUB: |
1387 | case STOREH_STUB: emit_ubfm(rs, 15, rt); break; |
1388 | case LOADW_STUB: |
1389 | case STOREW_STUB: if (rs != rt) emit_mov(rs, rt); break; |
3968e69e |
1390 | default: assert(0); |
d1e4ebd9 |
1391 | } |
1392 | } |
1393 | |
1394 | #include "pcsxmem.h" |
be516ebe |
1395 | //#include "pcsxmem_inline.c" |
1396 | |
1397 | static void do_readstub(int n) |
1398 | { |
1399 | assem_debug("do_readstub %x\n",start+stubs[n].a*4); |
d1e4ebd9 |
1400 | set_jump_target(stubs[n].addr, out); |
1401 | enum stub_type type = stubs[n].type; |
1402 | int i = stubs[n].a; |
1403 | int rs = stubs[n].b; |
1404 | const struct regstat *i_regs = (void *)stubs[n].c; |
1405 | u_int reglist = stubs[n].e; |
1406 | const signed char *i_regmap = i_regs->regmap; |
1407 | int rt; |
cf95b4f0 |
1408 | if(dops[i].itype==C1LS||dops[i].itype==C2LS||dops[i].itype==LOADLR) { |
d1e4ebd9 |
1409 | rt=get_reg(i_regmap,FTEMP); |
1410 | }else{ |
cf95b4f0 |
1411 | rt=get_reg(i_regmap,dops[i].rt1); |
d1e4ebd9 |
1412 | } |
1413 | assert(rs>=0); |
1414 | int r,temp=-1,temp2=HOST_TEMPREG,regs_saved=0; |
1415 | void *restore_jump = NULL, *handler_jump = NULL; |
1416 | reglist|=(1<<rs); |
1417 | for (r = 0; r < HOST_CCREG; r++) { |
1418 | if (r != EXCLUDE_REG && ((1 << r) & reglist) == 0) { |
1419 | temp = r; |
1420 | break; |
1421 | } |
1422 | } |
cf95b4f0 |
1423 | if(rt>=0&&dops[i].rt1!=0) |
d1e4ebd9 |
1424 | reglist&=~(1<<rt); |
1425 | if(temp==-1) { |
1426 | save_regs(reglist); |
1427 | regs_saved=1; |
1428 | temp=(rs==0)?2:0; |
1429 | } |
1430 | if((regs_saved||(reglist&2)==0)&&temp!=1&&rs!=1) |
1431 | temp2=1; |
1432 | emit_readdword(&mem_rtab,temp); |
1433 | emit_shrimm(rs,12,temp2); |
1434 | emit_readdword_dualindexedx8(temp,temp2,temp2); |
1435 | emit_adds64(temp2,temp2,temp2); |
1436 | handler_jump=out; |
1437 | emit_jc(0); |
cf95b4f0 |
1438 | if(dops[i].itype==C1LS||dops[i].itype==C2LS||(rt>=0&&dops[i].rt1!=0)) { |
d1e4ebd9 |
1439 | switch(type) { |
1440 | case LOADB_STUB: emit_ldrsb_dualindexed(temp2,rs,rt); break; |
1441 | case LOADBU_STUB: emit_ldrb_dualindexed(temp2,rs,rt); break; |
1442 | case LOADH_STUB: emit_ldrsh_dualindexed(temp2,rs,rt); break; |
1443 | case LOADHU_STUB: emit_ldrh_dualindexed(temp2,rs,rt); break; |
1444 | case LOADW_STUB: emit_ldr_dualindexed(temp2,rs,rt); break; |
3968e69e |
1445 | default: assert(0); |
d1e4ebd9 |
1446 | } |
1447 | } |
1448 | if(regs_saved) { |
1449 | restore_jump=out; |
1450 | emit_jmp(0); // jump to reg restore |
1451 | } |
1452 | else |
1453 | emit_jmp(stubs[n].retaddr); // return address |
1454 | set_jump_target(handler_jump, out); |
1455 | |
1456 | if(!regs_saved) |
1457 | save_regs(reglist); |
1458 | void *handler=NULL; |
1459 | if(type==LOADB_STUB||type==LOADBU_STUB) |
1460 | handler=jump_handler_read8; |
1461 | if(type==LOADH_STUB||type==LOADHU_STUB) |
1462 | handler=jump_handler_read16; |
1463 | if(type==LOADW_STUB) |
1464 | handler=jump_handler_read32; |
1465 | assert(handler); |
1466 | pass_args64(rs,temp2); |
1467 | int cc=get_reg(i_regmap,CCREG); |
1468 | if(cc<0) |
1469 | emit_loadreg(CCREG,2); |
2330734f |
1470 | emit_addimm(cc<0?2:cc,(int)stubs[n].d,2); |
2a014d73 |
1471 | emit_far_call(handler); |
d1e4ebd9 |
1472 | // (no cycle reload after read) |
cf95b4f0 |
1473 | if(dops[i].itype==C1LS||dops[i].itype==C2LS||(rt>=0&&dops[i].rt1!=0)) { |
d1e4ebd9 |
1474 | loadstore_extend(type,0,rt); |
1475 | } |
1476 | if(restore_jump) |
1477 | set_jump_target(restore_jump, out); |
1478 | restore_regs(reglist); |
1479 | emit_jmp(stubs[n].retaddr); |
be516ebe |
1480 | } |
1481 | |
81dbbf4c |
1482 | static void inline_readstub(enum stub_type type, int i, u_int addr, |
1483 | const signed char regmap[], int target, int adj, u_int reglist) |
be516ebe |
1484 | { |
d1e4ebd9 |
1485 | int rs=get_reg(regmap,target); |
1486 | int rt=get_reg(regmap,target); |
9de8a0c3 |
1487 | if(rs<0) rs=get_reg_temp(regmap); |
d1e4ebd9 |
1488 | assert(rs>=0); |
1489 | u_int is_dynamic=0; |
1490 | uintptr_t host_addr = 0; |
1491 | void *handler; |
1492 | int cc=get_reg(regmap,CCREG); |
2330734f |
1493 | //if(pcsx_direct_read(type,addr,adj,cc,target?rs:-1,rt)) |
d1e4ebd9 |
1494 | // return; |
1495 | handler = get_direct_memhandler(mem_rtab, addr, type, &host_addr); |
1496 | if (handler == NULL) { |
cf95b4f0 |
1497 | if(rt<0||dops[i].rt1==0) |
d1e4ebd9 |
1498 | return; |
37387d8b |
1499 | if (addr != host_addr) |
1500 | emit_movimm_from64(addr, rs, host_addr, rs); |
d1e4ebd9 |
1501 | switch(type) { |
1502 | case LOADB_STUB: emit_movsbl_indexed(0,rs,rt); break; |
1503 | case LOADBU_STUB: emit_movzbl_indexed(0,rs,rt); break; |
1504 | case LOADH_STUB: emit_movswl_indexed(0,rs,rt); break; |
1505 | case LOADHU_STUB: emit_movzwl_indexed(0,rs,rt); break; |
1506 | case LOADW_STUB: emit_readword_indexed(0,rs,rt); break; |
1507 | default: assert(0); |
1508 | } |
1509 | return; |
1510 | } |
37387d8b |
1511 | is_dynamic = pcsxmem_is_handler_dynamic(addr); |
1512 | if (is_dynamic) { |
d1e4ebd9 |
1513 | if(type==LOADB_STUB||type==LOADBU_STUB) |
1514 | handler=jump_handler_read8; |
1515 | if(type==LOADH_STUB||type==LOADHU_STUB) |
1516 | handler=jump_handler_read16; |
1517 | if(type==LOADW_STUB) |
1518 | handler=jump_handler_read32; |
1519 | } |
1520 | |
1521 | // call a memhandler |
cf95b4f0 |
1522 | if(rt>=0&&dops[i].rt1!=0) |
d1e4ebd9 |
1523 | reglist&=~(1<<rt); |
1524 | save_regs(reglist); |
1525 | if(target==0) |
1526 | emit_movimm(addr,0); |
1527 | else if(rs!=0) |
1528 | emit_mov(rs,0); |
1529 | if(cc<0) |
1530 | emit_loadreg(CCREG,2); |
2330734f |
1531 | emit_addimm(cc<0?2:cc,adj,2); |
3968e69e |
1532 | if(is_dynamic) { |
1533 | uintptr_t l1 = ((uintptr_t *)mem_rtab)[addr>>12] << 1; |
aaece508 |
1534 | intptr_t offset = (l1 & ~0xfffl) - ((intptr_t)out & ~0xfffl); |
1535 | if (-4294967296l <= offset && offset < 4294967296l) { |
1536 | emit_adrp((void *)l1, 1); |
1537 | emit_addimm64(1, l1 & 0xfff, 1); |
1538 | } |
1539 | else |
1540 | emit_movimm64(l1, 1); |
3968e69e |
1541 | } |
d1e4ebd9 |
1542 | else |
2a014d73 |
1543 | emit_far_call(do_memhandler_pre); |
d1e4ebd9 |
1544 | |
2a014d73 |
1545 | emit_far_call(handler); |
d1e4ebd9 |
1546 | |
1547 | // (no cycle reload after read) |
cf95b4f0 |
1548 | if(rt>=0&&dops[i].rt1!=0) |
d1e4ebd9 |
1549 | loadstore_extend(type, 0, rt); |
1550 | restore_regs(reglist); |
be516ebe |
1551 | } |
1552 | |
1553 | static void do_writestub(int n) |
1554 | { |
1555 | assem_debug("do_writestub %x\n",start+stubs[n].a*4); |
d1e4ebd9 |
1556 | set_jump_target(stubs[n].addr, out); |
1557 | enum stub_type type=stubs[n].type; |
1558 | int i=stubs[n].a; |
1559 | int rs=stubs[n].b; |
1560 | struct regstat *i_regs=(struct regstat *)stubs[n].c; |
1561 | u_int reglist=stubs[n].e; |
1562 | signed char *i_regmap=i_regs->regmap; |
1563 | int rt,r; |
cf95b4f0 |
1564 | if(dops[i].itype==C1LS||dops[i].itype==C2LS) { |
d1e4ebd9 |
1565 | rt=get_reg(i_regmap,r=FTEMP); |
1566 | }else{ |
cf95b4f0 |
1567 | rt=get_reg(i_regmap,r=dops[i].rs2); |
d1e4ebd9 |
1568 | } |
1569 | assert(rs>=0); |
1570 | assert(rt>=0); |
1571 | int rtmp,temp=-1,temp2,regs_saved=0; |
1572 | void *restore_jump = NULL, *handler_jump = NULL; |
1573 | int reglist2=reglist|(1<<rs)|(1<<rt); |
1574 | for (rtmp = 0; rtmp < HOST_CCREG; rtmp++) { |
1575 | if (rtmp != EXCLUDE_REG && ((1 << rtmp) & reglist) == 0) { |
1576 | temp = rtmp; |
1577 | break; |
1578 | } |
1579 | } |
1580 | if(temp==-1) { |
1581 | save_regs(reglist); |
1582 | regs_saved=1; |
1583 | for(rtmp=0;rtmp<=3;rtmp++) |
1584 | if(rtmp!=rs&&rtmp!=rt) |
1585 | {temp=rtmp;break;} |
1586 | } |
1587 | if((regs_saved||(reglist2&8)==0)&&temp!=3&&rs!=3&&rt!=3) |
1588 | temp2=3; |
1589 | else { |
1590 | host_tempreg_acquire(); |
1591 | temp2=HOST_TEMPREG; |
1592 | } |
1593 | emit_readdword(&mem_wtab,temp); |
1594 | emit_shrimm(rs,12,temp2); |
1595 | emit_readdword_dualindexedx8(temp,temp2,temp2); |
1596 | emit_adds64(temp2,temp2,temp2); |
1597 | handler_jump=out; |
1598 | emit_jc(0); |
1599 | switch(type) { |
1600 | case STOREB_STUB: emit_strb_dualindexed(temp2,rs,rt); break; |
1601 | case STOREH_STUB: emit_strh_dualindexed(temp2,rs,rt); break; |
1602 | case STOREW_STUB: emit_str_dualindexed(temp2,rs,rt); break; |
1603 | default: assert(0); |
1604 | } |
1605 | if(regs_saved) { |
1606 | restore_jump=out; |
1607 | emit_jmp(0); // jump to reg restore |
1608 | } |
1609 | else |
1610 | emit_jmp(stubs[n].retaddr); // return address (invcode check) |
1611 | set_jump_target(handler_jump, out); |
1612 | |
d1e4ebd9 |
1613 | if(!regs_saved) |
1614 | save_regs(reglist); |
1615 | void *handler=NULL; |
1616 | switch(type) { |
1617 | case STOREB_STUB: handler=jump_handler_write8; break; |
1618 | case STOREH_STUB: handler=jump_handler_write16; break; |
1619 | case STOREW_STUB: handler=jump_handler_write32; break; |
3968e69e |
1620 | default: assert(0); |
d1e4ebd9 |
1621 | } |
1622 | assert(handler); |
1623 | pass_args(rs,rt); |
1624 | if(temp2!=3) { |
1625 | emit_mov64(temp2,3); |
1626 | host_tempreg_release(); |
1627 | } |
1628 | int cc=get_reg(i_regmap,CCREG); |
1629 | if(cc<0) |
1630 | emit_loadreg(CCREG,2); |
2330734f |
1631 | emit_addimm(cc<0?2:cc,(int)stubs[n].d,2); |
d1e4ebd9 |
1632 | // returns new cycle_count |
2a014d73 |
1633 | emit_far_call(handler); |
2330734f |
1634 | emit_addimm(0,-(int)stubs[n].d,cc<0?2:cc); |
d1e4ebd9 |
1635 | if(cc<0) |
1636 | emit_storereg(CCREG,2); |
1637 | if(restore_jump) |
1638 | set_jump_target(restore_jump, out); |
1639 | restore_regs(reglist); |
1640 | emit_jmp(stubs[n].retaddr); |
be516ebe |
1641 | } |
1642 | |
81dbbf4c |
1643 | static void inline_writestub(enum stub_type type, int i, u_int addr, |
1644 | const signed char regmap[], int target, int adj, u_int reglist) |
be516ebe |
1645 | { |
9de8a0c3 |
1646 | int rs = get_reg_temp(regmap); |
687b4580 |
1647 | int rt = get_reg(regmap,target); |
1648 | assert(rs >= 0); |
1649 | assert(rt >= 0); |
1650 | uintptr_t host_addr = 0; |
1651 | void *handler = get_direct_memhandler(mem_wtab, addr, type, &host_addr); |
1652 | if (handler == NULL) { |
37387d8b |
1653 | if (addr != host_addr) |
1654 | emit_movimm_from64(addr, rs, host_addr, rs); |
d1e4ebd9 |
1655 | switch (type) { |
687b4580 |
1656 | case STOREB_STUB: emit_writebyte_indexed(rt, 0, rs); break; |
1657 | case STOREH_STUB: emit_writehword_indexed(rt, 0, rs); break; |
1658 | case STOREW_STUB: emit_writeword_indexed(rt, 0, rs); break; |
1659 | default: assert(0); |
1660 | } |
1661 | return; |
1662 | } |
1663 | |
1664 | // call a memhandler |
1665 | save_regs(reglist); |
687b4580 |
1666 | emit_writeword(rs, &address); // some handlers still need it |
d1e4ebd9 |
1667 | loadstore_extend(type, rt, 0); |
1668 | int cc, cc_use; |
1669 | cc = cc_use = get_reg(regmap, CCREG); |
1670 | if (cc < 0) |
1671 | emit_loadreg(CCREG, (cc_use = 2)); |
2330734f |
1672 | emit_addimm(cc_use, adj, 2); |
d1e4ebd9 |
1673 | |
2a014d73 |
1674 | emit_far_call(do_memhandler_pre); |
1675 | emit_far_call(handler); |
1676 | emit_far_call(do_memhandler_post); |
2330734f |
1677 | emit_addimm(0, -adj, cc_use); |
d1e4ebd9 |
1678 | if (cc < 0) |
1679 | emit_storereg(CCREG, cc_use); |
687b4580 |
1680 | restore_regs(reglist); |
be516ebe |
1681 | } |
1682 | |
3968e69e |
1683 | /* Special assem */ |
1684 | |
81dbbf4c |
1685 | static void c2op_prologue(u_int op, int i, const struct regstat *i_regs, u_int reglist) |
3968e69e |
1686 | { |
1687 | save_load_regs_all(1, reglist); |
32631e6a |
1688 | cop2_do_stall_check(op, i, i_regs, 0); |
3968e69e |
1689 | #ifdef PCNT |
1690 | emit_movimm(op, 0); |
2a014d73 |
1691 | emit_far_call(pcnt_gte_start); |
3968e69e |
1692 | #endif |
1693 | // pointer to cop2 regs |
1694 | emit_addimm64(FP, (u_char *)&psxRegs.CP2D.r[0] - (u_char *)&dynarec_local, 0); |
1695 | } |
1696 | |
1697 | static void c2op_epilogue(u_int op,u_int reglist) |
1698 | { |
1699 | #ifdef PCNT |
1700 | emit_movimm(op, 0); |
2a014d73 |
1701 | emit_far_call(pcnt_gte_end); |
3968e69e |
1702 | #endif |
1703 | save_load_regs_all(0, reglist); |
be516ebe |
1704 | } |
1705 | |
81dbbf4c |
1706 | static void c2op_assemble(int i, const struct regstat *i_regs) |
be516ebe |
1707 | { |
3968e69e |
1708 | u_int c2op=source[i]&0x3f; |
1709 | u_int hr,reglist_full=0,reglist; |
1710 | int need_flags,need_ir; |
1711 | for(hr=0;hr<HOST_REGS;hr++) { |
1712 | if(i_regs->regmap[hr]>=0) reglist_full|=1<<hr; |
1713 | } |
1714 | reglist=reglist_full&CALLER_SAVE_REGS; |
1715 | |
1716 | if (gte_handlers[c2op]!=NULL) { |
1717 | need_flags=!(gte_unneeded[i+1]>>63); // +1 because of how liveness detection works |
1718 | need_ir=(gte_unneeded[i+1]&0xe00)!=0xe00; |
1719 | assem_debug("gte op %08x, unneeded %016lx, need_flags %d, need_ir %d\n", |
1720 | source[i],gte_unneeded[i+1],need_flags,need_ir); |
d62c125a |
1721 | if(HACK_ENABLED(NDHACK_GTE_NO_FLAGS)) |
3968e69e |
1722 | need_flags=0; |
1723 | //int shift = (source[i] >> 19) & 1; |
1724 | //int lm = (source[i] >> 10) & 1; |
1725 | switch(c2op) { |
1726 | default: |
1727 | (void)need_ir; |
81dbbf4c |
1728 | c2op_prologue(c2op, i, i_regs, reglist); |
3968e69e |
1729 | emit_movimm(source[i],1); // opcode |
1730 | emit_writeword(1,&psxRegs.code); |
2a014d73 |
1731 | emit_far_call(need_flags?gte_handlers[c2op]:gte_handlers_nf[c2op]); |
3968e69e |
1732 | break; |
1733 | } |
1734 | c2op_epilogue(c2op,reglist); |
1735 | } |
1736 | } |
1737 | |
1738 | static void c2op_ctc2_31_assemble(signed char sl, signed char temp) |
1739 | { |
1740 | //value = value & 0x7ffff000; |
1741 | //if (value & 0x7f87e000) value |= 0x80000000; |
1742 | emit_andimm(sl, 0x7fffe000, temp); |
1743 | emit_testimm(temp, 0xff87ffff); |
1744 | emit_andimm(sl, 0x7ffff000, temp); |
1745 | host_tempreg_acquire(); |
1746 | emit_orimm(temp, 0x80000000, HOST_TEMPREG); |
1747 | emit_cmovne_reg(HOST_TEMPREG, temp); |
1748 | host_tempreg_release(); |
1749 | assert(0); // testing needed |
1750 | } |
1751 | |
1752 | static void do_mfc2_31_one(u_int copr,signed char temp) |
1753 | { |
1754 | emit_readshword(®_cop2d[copr],temp); |
1755 | emit_bicsar_imm(temp,31,temp); |
1756 | emit_cmpimm(temp,0xf80); |
1757 | emit_csinvle_reg(temp,WZR,temp); // if (temp > 0xf80) temp = ~0; |
1758 | emit_andimm(temp,0xf80,temp); |
1759 | } |
1760 | |
1761 | static void c2op_mfc2_29_assemble(signed char tl, signed char temp) |
1762 | { |
1763 | if (temp < 0) { |
1764 | host_tempreg_acquire(); |
1765 | temp = HOST_TEMPREG; |
1766 | } |
1767 | do_mfc2_31_one(9,temp); |
1768 | emit_shrimm(temp,7,tl); |
1769 | do_mfc2_31_one(10,temp); |
1770 | emit_orrshr_imm(temp,2,tl); |
1771 | do_mfc2_31_one(11,temp); |
1772 | emit_orrshl_imm(temp,3,tl); |
1773 | emit_writeword(tl,®_cop2d[29]); |
1774 | |
1775 | if (temp == HOST_TEMPREG) |
1776 | host_tempreg_release(); |
be516ebe |
1777 | } |
1778 | |
2330734f |
1779 | static void multdiv_assemble_arm64(int i, const struct regstat *i_regs) |
be516ebe |
1780 | { |
3968e69e |
1781 | // case 0x18: MULT |
1782 | // case 0x19: MULTU |
1783 | // case 0x1A: DIV |
1784 | // case 0x1B: DIVU |
cf95b4f0 |
1785 | if(dops[i].rs1&&dops[i].rs2) |
3968e69e |
1786 | { |
cf95b4f0 |
1787 | switch(dops[i].opcode2) |
3968e69e |
1788 | { |
1789 | case 0x18: // MULT |
1790 | case 0x19: // MULTU |
1791 | { |
cf95b4f0 |
1792 | signed char m1=get_reg(i_regs->regmap,dops[i].rs1); |
1793 | signed char m2=get_reg(i_regs->regmap,dops[i].rs2); |
3968e69e |
1794 | signed char hi=get_reg(i_regs->regmap,HIREG); |
1795 | signed char lo=get_reg(i_regs->regmap,LOREG); |
1796 | assert(m1>=0); |
1797 | assert(m2>=0); |
1798 | assert(hi>=0); |
1799 | assert(lo>=0); |
1800 | |
cf95b4f0 |
1801 | if(dops[i].opcode2==0x18) // MULT |
3968e69e |
1802 | emit_smull(m1,m2,hi); |
1803 | else // MULTU |
1804 | emit_umull(m1,m2,hi); |
1805 | |
1806 | emit_mov(hi,lo); |
1807 | emit_shrimm64(hi,32,hi); |
1808 | break; |
1809 | } |
1810 | case 0x1A: // DIV |
1811 | case 0x1B: // DIVU |
1812 | { |
cf95b4f0 |
1813 | signed char numerator=get_reg(i_regs->regmap,dops[i].rs1); |
1814 | signed char denominator=get_reg(i_regs->regmap,dops[i].rs2); |
3968e69e |
1815 | signed char quotient=get_reg(i_regs->regmap,LOREG); |
1816 | signed char remainder=get_reg(i_regs->regmap,HIREG); |
1817 | assert(numerator>=0); |
1818 | assert(denominator>=0); |
1819 | assert(quotient>=0); |
1820 | assert(remainder>=0); |
1821 | |
cf95b4f0 |
1822 | if (dops[i].opcode2 == 0x1A) // DIV |
3968e69e |
1823 | emit_sdiv(numerator,denominator,quotient); |
1824 | else // DIVU |
1825 | emit_udiv(numerator,denominator,quotient); |
1826 | emit_msub(quotient,denominator,numerator,remainder); |
1827 | |
1828 | // div 0 quotient (remainder is already correct) |
1829 | host_tempreg_acquire(); |
cf95b4f0 |
1830 | if (dops[i].opcode2 == 0x1A) // DIV |
3968e69e |
1831 | emit_sub_asrimm(0,numerator,31,HOST_TEMPREG); |
1832 | else |
1833 | emit_movimm(~0,HOST_TEMPREG); |
1834 | emit_test(denominator,denominator); |
1835 | emit_cmoveq_reg(HOST_TEMPREG,quotient); |
1836 | host_tempreg_release(); |
1837 | break; |
1838 | } |
1839 | default: |
1840 | assert(0); |
1841 | } |
1842 | } |
1843 | else |
1844 | { |
1845 | signed char hr=get_reg(i_regs->regmap,HIREG); |
1846 | signed char lr=get_reg(i_regs->regmap,LOREG); |
cf95b4f0 |
1847 | if ((dops[i].opcode2==0x1A || dops[i].opcode2==0x1B) && dops[i].rs2==0) // div 0 |
3968e69e |
1848 | { |
cf95b4f0 |
1849 | if (dops[i].rs1) { |
1850 | signed char numerator = get_reg(i_regs->regmap, dops[i].rs1); |
3968e69e |
1851 | assert(numerator >= 0); |
1852 | if (hr >= 0) |
1853 | emit_mov(numerator,hr); |
1854 | if (lr >= 0) { |
cf95b4f0 |
1855 | if (dops[i].opcode2 == 0x1A) // DIV |
3968e69e |
1856 | emit_sub_asrimm(0,numerator,31,lr); |
1857 | else |
1858 | emit_movimm(~0,lr); |
1859 | } |
1860 | } |
1861 | else { |
1862 | if (hr >= 0) emit_zeroreg(hr); |
1863 | if (lr >= 0) emit_movimm(~0,lr); |
1864 | } |
1865 | } |
1866 | else |
1867 | { |
1868 | // Multiply by zero is zero. |
1869 | if (hr >= 0) emit_zeroreg(hr); |
1870 | if (lr >= 0) emit_zeroreg(lr); |
1871 | } |
1872 | } |
be516ebe |
1873 | } |
1874 | #define multdiv_assemble multdiv_assemble_arm64 |
1875 | |
d1e4ebd9 |
1876 | static void do_jump_vaddr(u_int rs) |
1877 | { |
1878 | if (rs != 0) |
1879 | emit_mov(rs, 0); |
104df9d3 |
1880 | emit_far_call(ndrc_get_addr_ht); |
d1e4ebd9 |
1881 | emit_jmpreg(0); |
1882 | } |
1883 | |
be516ebe |
1884 | static void do_preload_rhash(u_int r) { |
1885 | // Don't need this for ARM. On x86, this puts the value 0xf8 into the |
1886 | // register. On ARM the hash can be done with a single instruction (below) |
1887 | } |
1888 | |
1889 | static void do_preload_rhtbl(u_int ht) { |
d1e4ebd9 |
1890 | emit_addimm64(FP, (u_char *)&mini_ht - (u_char *)&dynarec_local, ht); |
be516ebe |
1891 | } |
1892 | |
1893 | static void do_rhash(u_int rs,u_int rh) { |
1894 | emit_andimm(rs, 0xf8, rh); |
1895 | } |
1896 | |
d1e4ebd9 |
1897 | static void do_miniht_load(int ht, u_int rh) { |
1898 | emit_add64(ht, rh, ht); |
1899 | emit_ldst(0, 0, rh, ht, 0); |
be516ebe |
1900 | } |
1901 | |
d1e4ebd9 |
1902 | static void do_miniht_jump(u_int rs, u_int rh, u_int ht) { |
1903 | emit_cmp(rh, rs); |
1904 | void *jaddr = out; |
1905 | emit_jeq(0); |
1906 | do_jump_vaddr(rs); |
1907 | |
1908 | set_jump_target(jaddr, out); |
1909 | assem_debug("ldr %s,[%s,#8]\n",regname64[ht], regname64[ht]); |
1910 | output_w32(0xf9400000 | imm12_rn_rd(8 >> 3, ht, ht)); |
1911 | emit_jmpreg(ht); |
be516ebe |
1912 | } |
1913 | |
d1e4ebd9 |
1914 | // parsed by set_jump_target? |
be516ebe |
1915 | static void do_miniht_insert(u_int return_address,u_int rt,int temp) { |
d1e4ebd9 |
1916 | emit_movz_lsl16((return_address>>16)&0xffff,rt); |
1917 | emit_movk(return_address&0xffff,rt); |
1918 | add_to_linker(out,return_address,1); |
1919 | emit_adr(out,temp); |
1920 | emit_writedword(temp,&mini_ht[(return_address&0xFF)>>3][1]); |
1921 | emit_writeword(rt,&mini_ht[(return_address&0xFF)>>3][0]); |
be516ebe |
1922 | } |
1923 | |
d9e2b173 |
1924 | static unused void clear_cache_arm64(char *start, char *end) |
be516ebe |
1925 | { |
919981d0 |
1926 | // Don't rely on GCC's __clear_cache implementation, as it caches |
1927 | // icache/dcache cache line sizes, that can vary between cores on |
1928 | // big.LITTLE architectures. |
1929 | uint64_t addr, ctr_el0; |
1930 | static size_t icache_line_size = 0xffff, dcache_line_size = 0xffff; |
1931 | size_t isize, dsize; |
1932 | |
1933 | __asm__ volatile("mrs %0, ctr_el0" : "=r"(ctr_el0)); |
1934 | isize = 4 << ((ctr_el0 >> 0) & 0xf); |
1935 | dsize = 4 << ((ctr_el0 >> 16) & 0xf); |
1936 | |
1937 | // use the global minimum cache line size |
1938 | icache_line_size = isize = icache_line_size < isize ? icache_line_size : isize; |
1939 | dcache_line_size = dsize = dcache_line_size < dsize ? dcache_line_size : dsize; |
1940 | |
1941 | /* If CTR_EL0.IDC is enabled, Data cache clean to the Point of Unification is |
1942 | not required for instruction to data coherence. */ |
1943 | if ((ctr_el0 & (1 << 28)) == 0x0) { |
1944 | addr = (uint64_t)start & ~(uint64_t)(dsize - 1); |
1945 | for (; addr < (uint64_t)end; addr += dsize) |
1946 | // use "civac" instead of "cvau", as this is the suggested workaround for |
1947 | // Cortex-A53 errata 819472, 826319, 827319 and 824069. |
1948 | __asm__ volatile("dc civac, %0" : : "r"(addr) : "memory"); |
be516ebe |
1949 | } |
919981d0 |
1950 | __asm__ volatile("dsb ish" : : : "memory"); |
be516ebe |
1951 | |
919981d0 |
1952 | /* If CTR_EL0.DIC is enabled, Instruction cache cleaning to the Point of |
1953 | Unification is not required for instruction to data coherence. */ |
1954 | if ((ctr_el0 & (1 << 29)) == 0x0) { |
1955 | addr = (uint64_t)start & ~(uint64_t)(isize - 1); |
1956 | for (; addr < (uint64_t)end; addr += isize) |
1957 | __asm__ volatile("ic ivau, %0" : : "r"(addr) : "memory"); |
1958 | |
1959 | __asm__ volatile("dsb ish" : : : "memory"); |
be516ebe |
1960 | } |
919981d0 |
1961 | |
1962 | __asm__ volatile("isb" : : : "memory"); |
be516ebe |
1963 | } |
1964 | |
1965 | // CPU-architecture-specific initialization |
2a014d73 |
1966 | static void arch_init(void) |
1967 | { |
1968 | uintptr_t diff = (u_char *)&ndrc->tramp.f - (u_char *)&ndrc->tramp.ops; |
d9e2b173 |
1969 | struct tramp_insns *ops = NDRC_WRITE_OFFSET(ndrc->tramp.ops); |
2a014d73 |
1970 | size_t i; |
1971 | assert(!(diff & 3)); |
d9e2b173 |
1972 | start_tcache_write(ops, (u_char *)ops + sizeof(ndrc->tramp.ops)); |
2a014d73 |
1973 | for (i = 0; i < ARRAY_SIZE(ndrc->tramp.ops); i++) { |
d9e2b173 |
1974 | ops[i].ldr = 0x58000000 | imm19_rt(diff >> 2, 17); // ldr x17, [=val] |
1975 | ops[i].br = 0xd61f0000 | rm_rn_rd(0, 17, 0); // br x17 |
2a014d73 |
1976 | } |
1977 | end_tcache_write(ops, (u_char *)ops + sizeof(ndrc->tramp.ops)); |
be516ebe |
1978 | } |
1979 | |
1980 | // vim:shiftwidth=2:expandtab |