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 unused __attribute__((unused)) |
27 | |
d1e4ebd9 |
28 | void do_memhandler_pre(); |
29 | void do_memhandler_post(); |
be516ebe |
30 | |
31 | /* Linker */ |
d1e4ebd9 |
32 | static void set_jump_target(void *addr, void *target) |
be516ebe |
33 | { |
d9e2b173 |
34 | u_int *ptr = NDRC_WRITE_OFFSET(addr); |
d1e4ebd9 |
35 | intptr_t offset = (u_char *)target - (u_char *)addr; |
36 | |
3968e69e |
37 | if ((*ptr&0xFC000000) == 0x14000000) { // b |
d1e4ebd9 |
38 | assert(offset>=-134217728LL&&offset<134217728LL); |
39 | *ptr=(*ptr&0xFC000000)|((offset>>2)&0x3ffffff); |
40 | } |
3968e69e |
41 | else if ((*ptr&0xff000000) == 0x54000000 // b.cond |
42 | || (*ptr&0x7e000000) == 0x34000000) { // cbz/cbnz |
d1e4ebd9 |
43 | // Conditional branch are limited to +/- 1MB |
44 | // block max size is 256k so branching beyond the +/- 1MB limit |
3d680478 |
45 | // should only happen when jumping to an already compiled block (see add_jump_out) |
d1e4ebd9 |
46 | // a workaround would be to do a trampoline jump via a stub at the end of the block |
3968e69e |
47 | assert(-1048576 <= offset && offset < 1048576); |
d1e4ebd9 |
48 | *ptr=(*ptr&0xFF00000F)|(((offset>>2)&0x7ffff)<<5); |
49 | } |
3968e69e |
50 | else if((*ptr&0x9f000000)==0x10000000) { // adr |
d1e4ebd9 |
51 | // generated by do_miniht_insert |
52 | assert(offset>=-1048576LL&&offset<1048576LL); |
53 | *ptr=(*ptr&0x9F00001F)|(offset&0x3)<<29|((offset>>2)&0x7ffff)<<5; |
54 | } |
55 | else |
3968e69e |
56 | abort(); // should not happen |
be516ebe |
57 | } |
58 | |
59 | // from a pointer to external jump stub (which was produced by emit_extjump2) |
60 | // find where the jumping insn is |
61 | static void *find_extjump_insn(void *stub) |
62 | { |
d1e4ebd9 |
63 | int *ptr = (int *)stub + 2; |
64 | assert((*ptr&0x9f000000) == 0x10000000); // adr |
65 | int offset = (((signed int)(*ptr<<8)>>13)<<2)|((*ptr>>29)&0x3); |
66 | return ptr + offset / 4; |
be516ebe |
67 | } |
68 | |
104df9d3 |
69 | #if 0 |
be516ebe |
70 | // find where external branch is liked to using addr of it's stub: |
3968e69e |
71 | // get address that the stub loads (dyna_linker arg1), |
be516ebe |
72 | // treat it as a pointer to branch insn, |
73 | // return addr where that branch jumps to |
74 | static void *get_pointer(void *stub) |
75 | { |
d1e4ebd9 |
76 | int *i_ptr = find_extjump_insn(stub); |
3968e69e |
77 | if ((*i_ptr&0xfc000000) == 0x14000000) // b |
78 | return i_ptr + ((signed int)(*i_ptr<<6)>>6); |
79 | if ((*i_ptr&0xff000000) == 0x54000000 // b.cond |
80 | || (*i_ptr&0x7e000000) == 0x34000000) // cbz/cbnz |
81 | return i_ptr + ((signed int)(*i_ptr<<8)>>13); |
be516ebe |
82 | assert(0); |
83 | return NULL; |
84 | } |
104df9d3 |
85 | #endif |
be516ebe |
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 | { |
d9e2b173 |
145 | *((u_int *)NDRC_WRITE_OFFSET(out)) = word; |
be516ebe |
146 | out += 4; |
147 | } |
148 | |
3968e69e |
149 | static u_int rn_rd(u_int rn, u_int rd) |
150 | { |
151 | assert(rn < 31); |
152 | assert(rd < 31); |
153 | return (rn << 5) | rd; |
154 | } |
155 | |
be516ebe |
156 | static u_int rm_rn_rd(u_int rm, u_int rn, u_int rd) |
157 | { |
d1e4ebd9 |
158 | assert(rm < 32); |
159 | assert(rn < 32); |
160 | assert(rd < 32); |
be516ebe |
161 | return (rm << 16) | (rn << 5) | rd; |
162 | } |
163 | |
3968e69e |
164 | static u_int rm_ra_rn_rd(u_int rm, u_int ra, u_int rn, u_int rd) |
165 | { |
166 | assert(ra < 32); |
167 | return rm_rn_rd(rm, rn, rd) | (ra << 10); |
168 | } |
169 | |
d1e4ebd9 |
170 | static u_int imm7_rt2_rn_rt(u_int imm7, u_int rt2, u_int rn, u_int rt) |
171 | { |
172 | assert(imm7 < 0x80); |
173 | assert(rt2 < 31); |
174 | assert(rn < 32); |
175 | assert(rt < 31); |
176 | return (imm7 << 15) | (rt2 << 10) | (rn << 5) | rt; |
177 | } |
178 | |
687b4580 |
179 | static u_int rm_imm6_rn_rd(u_int rm, u_int imm6, u_int rn, u_int rd) |
180 | { |
181 | assert(imm6 <= 63); |
182 | return rm_rn_rd(rm, rn, rd) | (imm6 << 10); |
183 | } |
184 | |
be516ebe |
185 | static u_int imm16_rd(u_int imm16, u_int rd) |
186 | { |
187 | assert(imm16 < 0x10000); |
188 | assert(rd < 31); |
189 | return (imm16 << 5) | rd; |
190 | } |
191 | |
687b4580 |
192 | static u_int imm12_rn_rd(u_int imm12, u_int rn, u_int rd) |
193 | { |
194 | assert(imm12 < 0x1000); |
d1e4ebd9 |
195 | assert(rn < 32); |
196 | assert(rd < 32); |
197 | return (imm12 << 10) | (rn << 5) | rd; |
198 | } |
199 | |
200 | static u_int imm9_rn_rt(u_int imm9, u_int rn, u_int rd) |
201 | { |
202 | assert(imm9 < 0x200); |
687b4580 |
203 | assert(rn < 31); |
204 | assert(rd < 31); |
d1e4ebd9 |
205 | return (imm9 << 12) | (rn << 5) | rd; |
687b4580 |
206 | } |
207 | |
d1e4ebd9 |
208 | static u_int imm19_rt(u_int imm19, u_int rt) |
209 | { |
210 | assert(imm19 < 0x80000); |
211 | assert(rt < 31); |
212 | return (imm19 << 5) | rt; |
213 | } |
214 | |
215 | static u_int n_immr_imms_rn_rd(u_int n, u_int immr, u_int imms, u_int rn, u_int rd) |
216 | { |
217 | assert(n < 2); |
218 | assert(immr < 0x40); |
219 | assert(imms < 0x40); |
220 | assert(rn < 32); |
221 | assert(rd < 32); |
222 | return (n << 22) | (immr << 16) | (imms << 10) | (rn << 5) | rd; |
223 | } |
224 | |
225 | static u_int genjmp(const u_char *addr) |
be516ebe |
226 | { |
227 | intptr_t offset = addr - out; |
d1e4ebd9 |
228 | if ((uintptr_t)addr < 3) return 0; // a branch that will be patched later |
be516ebe |
229 | if (offset < -134217728 || offset > 134217727) { |
d1e4ebd9 |
230 | SysPrintf("%s: out of range: %p %lx\n", __func__, addr, offset); |
231 | abort(); |
be516ebe |
232 | return 0; |
233 | } |
d1e4ebd9 |
234 | return ((u_int)offset >> 2) & 0x03ffffff; |
be516ebe |
235 | } |
236 | |
d1e4ebd9 |
237 | static u_int genjmpcc(const u_char *addr) |
be516ebe |
238 | { |
239 | intptr_t offset = addr - out; |
d1e4ebd9 |
240 | if ((uintptr_t)addr < 3) return 0; |
be516ebe |
241 | if (offset < -1048576 || offset > 1048572) { |
d1e4ebd9 |
242 | SysPrintf("%s: out of range: %p %lx\n", __func__, addr, offset); |
243 | abort(); |
244 | return 0; |
245 | } |
246 | return ((u_int)offset >> 2) & 0x7ffff; |
247 | } |
248 | |
249 | static uint32_t is_mask(u_int value) |
250 | { |
251 | return value && ((value + 1) & value) == 0; |
252 | } |
253 | |
254 | // This function returns true if the argument contains a |
255 | // non-empty sequence of ones (possibly rotated) with the remainder zero. |
256 | static uint32_t is_rotated_mask(u_int value) |
257 | { |
3968e69e |
258 | if (value == 0 || value == ~0) |
be516ebe |
259 | return 0; |
d1e4ebd9 |
260 | if (is_mask((value - 1) | value)) |
261 | return 1; |
262 | return is_mask((~value - 1) | ~value); |
263 | } |
264 | |
265 | static void gen_logical_imm(u_int value, u_int *immr, u_int *imms) |
266 | { |
267 | int lzeros, tzeros, ones; |
268 | assert(value != 0); |
269 | if (is_mask((value - 1) | value)) { |
270 | lzeros = __builtin_clz(value); |
271 | tzeros = __builtin_ctz(value); |
272 | ones = 32 - lzeros - tzeros; |
273 | *immr = (32 - tzeros) & 31; |
274 | *imms = ones - 1; |
275 | return; |
be516ebe |
276 | } |
d1e4ebd9 |
277 | value = ~value; |
278 | if (is_mask((value - 1) | value)) { |
279 | lzeros = __builtin_clz(value); |
280 | tzeros = __builtin_ctz(value); |
281 | ones = 32 - lzeros - tzeros; |
3968e69e |
282 | *immr = lzeros; |
d1e4ebd9 |
283 | *imms = 31 - ones; |
284 | return; |
285 | } |
3968e69e |
286 | abort(); |
be516ebe |
287 | } |
288 | |
289 | static void emit_mov(u_int rs, u_int rt) |
290 | { |
687b4580 |
291 | assem_debug("mov %s,%s\n", regname[rt], regname[rs]); |
d1e4ebd9 |
292 | output_w32(0x2a000000 | rm_rn_rd(rs, WZR, rt)); |
293 | } |
294 | |
295 | static void emit_mov64(u_int rs, u_int rt) |
296 | { |
297 | assem_debug("mov %s,%s\n", regname64[rt], regname64[rs]); |
298 | output_w32(0xaa000000 | rm_rn_rd(rs, WZR, rt)); |
be516ebe |
299 | } |
300 | |
687b4580 |
301 | static void emit_add(u_int rs1, u_int rs2, u_int rt) |
be516ebe |
302 | { |
d1e4ebd9 |
303 | assem_debug("add %s,%s,%s\n", regname[rt], regname[rs1], regname[rs2]); |
304 | output_w32(0x0b000000 | rm_rn_rd(rs2, rs1, rt)); |
be516ebe |
305 | } |
306 | |
d1e4ebd9 |
307 | static void emit_add64(u_int rs1, u_int rs2, u_int rt) |
be516ebe |
308 | { |
d1e4ebd9 |
309 | assem_debug("add %s,%s,%s\n", regname64[rt], regname64[rs1], regname64[rs2]); |
310 | output_w32(0x8b000000 | rm_rn_rd(rs2, rs1, rt)); |
be516ebe |
311 | } |
312 | |
d1e4ebd9 |
313 | static void emit_adds64(u_int rs1, u_int rs2, u_int rt) |
be516ebe |
314 | { |
3968e69e |
315 | assem_debug("adds %s,%s,%s\n",regname64[rt],regname64[rs1],regname64[rs2]); |
d1e4ebd9 |
316 | output_w32(0xab000000 | rm_rn_rd(rs2, rs1, rt)); |
317 | } |
39b71d9a |
318 | #define emit_adds_ptr emit_adds64 |
d1e4ebd9 |
319 | |
320 | static void emit_neg(u_int rs, u_int rt) |
321 | { |
322 | assem_debug("neg %s,%s\n",regname[rt],regname[rs]); |
323 | output_w32(0x4b000000 | rm_rn_rd(rs, WZR, rt)); |
be516ebe |
324 | } |
325 | |
687b4580 |
326 | static void emit_sub(u_int rs1, u_int rs2, u_int rt) |
be516ebe |
327 | { |
d1e4ebd9 |
328 | assem_debug("sub %s,%s,%s\n", regname[rt], regname[rs1], regname[rs2]); |
687b4580 |
329 | output_w32(0x4b000000 | rm_imm6_rn_rd(rs2, 0, rs1, rt)); |
be516ebe |
330 | } |
331 | |
3968e69e |
332 | static void emit_sub_asrimm(u_int rs1, u_int rs2, u_int shift, u_int rt) |
333 | { |
334 | assem_debug("sub %s,%s,%s,asr #%u\n",regname[rt],regname[rs1],regname[rs2],shift); |
335 | output_w32(0x4b800000 | rm_imm6_rn_rd(rs2, shift, rs1, rt)); |
336 | } |
337 | |
d1e4ebd9 |
338 | static void emit_movz(u_int imm, u_int rt) |
be516ebe |
339 | { |
d1e4ebd9 |
340 | assem_debug("movz %s,#%#x\n", regname[rt], imm); |
341 | output_w32(0x52800000 | imm16_rd(imm, rt)); |
342 | } |
343 | |
344 | static void emit_movz_lsl16(u_int imm, u_int rt) |
345 | { |
346 | assem_debug("movz %s,#%#x,lsl #16\n", regname[rt], imm); |
347 | output_w32(0x52a00000 | imm16_rd(imm, rt)); |
348 | } |
349 | |
350 | static void emit_movn(u_int imm, u_int rt) |
351 | { |
352 | assem_debug("movn %s,#%#x\n", regname[rt], imm); |
353 | output_w32(0x12800000 | imm16_rd(imm, rt)); |
354 | } |
355 | |
356 | static void emit_movn_lsl16(u_int imm,u_int rt) |
357 | { |
358 | assem_debug("movn %s,#%#x,lsl #16\n", regname[rt], imm); |
359 | output_w32(0x12a00000 | imm16_rd(imm, rt)); |
360 | } |
361 | |
362 | static void emit_movk(u_int imm,u_int rt) |
363 | { |
364 | assem_debug("movk %s,#%#x\n", regname[rt], imm); |
365 | output_w32(0x72800000 | imm16_rd(imm, rt)); |
366 | } |
367 | |
368 | static void emit_movk_lsl16(u_int imm,u_int rt) |
369 | { |
370 | assert(imm<65536); |
3968e69e |
371 | assem_debug("movk %s,#%#x,lsl #16\n", regname[rt], imm); |
d1e4ebd9 |
372 | output_w32(0x72a00000 | imm16_rd(imm, rt)); |
be516ebe |
373 | } |
374 | |
375 | static void emit_zeroreg(u_int rt) |
376 | { |
d1e4ebd9 |
377 | emit_movz(0, rt); |
be516ebe |
378 | } |
379 | |
be516ebe |
380 | static void emit_movimm(u_int imm, u_int rt) |
381 | { |
d1e4ebd9 |
382 | if (imm < 65536) |
383 | emit_movz(imm, rt); |
384 | else if ((~imm) < 65536) |
385 | emit_movn(~imm, rt); |
386 | else if ((imm&0xffff) == 0) |
387 | emit_movz_lsl16(imm >> 16, rt); |
388 | else if (((~imm)&0xffff) == 0) |
389 | emit_movn_lsl16(~imm >> 16, rt); |
390 | else if (is_rotated_mask(imm)) { |
391 | u_int immr, imms; |
392 | gen_logical_imm(imm, &immr, &imms); |
393 | assem_debug("orr %s,wzr,#%#x\n", regname[rt], imm); |
394 | output_w32(0x32000000 | n_immr_imms_rn_rd(0, immr, imms, WZR, rt)); |
395 | } |
be516ebe |
396 | else { |
d1e4ebd9 |
397 | emit_movz(imm & 0xffff, rt); |
398 | emit_movk_lsl16(imm >> 16, rt); |
be516ebe |
399 | } |
400 | } |
401 | |
aaece508 |
402 | static void emit_movimm64(uint64_t imm, u_int rt) |
403 | { |
404 | u_int shift, op, imm16, insns = 0; |
405 | for (shift = 0; shift < 4; shift++) { |
406 | imm16 = (imm >> shift * 16) & 0xffff; |
407 | if (!imm16) |
408 | continue; |
409 | op = insns ? 0xf2800000 : 0xd2800000; |
410 | assem_debug("mov%c %s,#%#x", insns ? 'k' : 'z', regname64[rt], imm16); |
411 | if (shift) |
412 | assem_debug(",lsl #%u", shift * 16); |
413 | assem_debug("\n"); |
414 | output_w32(op | (shift << 21) | imm16_rd(imm16, rt)); |
415 | insns++; |
416 | } |
417 | if (!insns) { |
418 | assem_debug("movz %s,#0\n", regname64[rt]); |
419 | output_w32(0xd2800000 | imm16_rd(0, rt)); |
420 | } |
421 | } |
422 | |
687b4580 |
423 | static void emit_readword(void *addr, u_int rt) |
424 | { |
425 | uintptr_t offset = (u_char *)addr - (u_char *)&dynarec_local; |
426 | if (!(offset & 3) && offset <= 16380) { |
427 | assem_debug("ldr %s,[x%d+%#lx]\n", regname[rt], FP, offset); |
428 | output_w32(0xb9400000 | imm12_rn_rd(offset >> 2, FP, rt)); |
429 | } |
430 | else |
3968e69e |
431 | abort(); |
687b4580 |
432 | } |
433 | |
d1e4ebd9 |
434 | static void emit_readdword(void *addr, u_int rt) |
435 | { |
436 | uintptr_t offset = (u_char *)addr - (u_char *)&dynarec_local; |
437 | if (!(offset & 7) && offset <= 32760) { |
438 | assem_debug("ldr %s,[x%d+%#lx]\n", regname64[rt], FP, offset); |
439 | output_w32(0xf9400000 | imm12_rn_rd(offset >> 3, FP, rt)); |
440 | } |
3968e69e |
441 | else |
442 | abort(); |
443 | } |
39b71d9a |
444 | #define emit_readptr emit_readdword |
3968e69e |
445 | |
446 | static void emit_readshword(void *addr, u_int rt) |
447 | { |
448 | uintptr_t offset = (u_char *)addr - (u_char *)&dynarec_local; |
449 | if (!(offset & 1) && offset <= 8190) { |
450 | assem_debug("ldrsh %s,[x%d+%#lx]\n", regname[rt], FP, offset); |
451 | output_w32(0x79c00000 | imm12_rn_rd(offset >> 1, FP, rt)); |
452 | } |
d1e4ebd9 |
453 | else |
454 | assert(0); |
455 | } |
456 | |
be516ebe |
457 | static void emit_loadreg(u_int r, u_int hr) |
458 | { |
d1e4ebd9 |
459 | int is64 = 0; |
be516ebe |
460 | if (r == 0) |
461 | emit_zeroreg(hr); |
462 | else { |
33788798 |
463 | void *addr; |
be516ebe |
464 | switch (r) { |
7c3a5182 |
465 | //case HIREG: addr = &hi; break; |
466 | //case LOREG: addr = &lo; break; |
be516ebe |
467 | case CCREG: addr = &cycle_count; break; |
468 | case CSREG: addr = &Status; break; |
d1e4ebd9 |
469 | case INVCP: addr = &invc_ptr; is64 = 1; break; |
37387d8b |
470 | case ROREG: addr = &ram_offset; is64 = 1; break; |
33788798 |
471 | default: |
472 | assert(r < 34); |
473 | addr = &psxRegs.GPR.r[r]; |
474 | break; |
be516ebe |
475 | } |
d1e4ebd9 |
476 | if (is64) |
477 | emit_readdword(addr, hr); |
478 | else |
479 | emit_readword(addr, hr); |
be516ebe |
480 | } |
481 | } |
482 | |
687b4580 |
483 | static void emit_writeword(u_int rt, void *addr) |
484 | { |
485 | uintptr_t offset = (u_char *)addr - (u_char *)&dynarec_local; |
486 | if (!(offset & 3) && offset <= 16380) { |
487 | assem_debug("str %s,[x%d+%#lx]\n", regname[rt], FP, offset); |
488 | output_w32(0xb9000000 | imm12_rn_rd(offset >> 2, FP, rt)); |
489 | } |
490 | else |
491 | assert(0); |
492 | } |
493 | |
d1e4ebd9 |
494 | static void emit_writedword(u_int rt, void *addr) |
495 | { |
496 | uintptr_t offset = (u_char *)addr - (u_char *)&dynarec_local; |
497 | if (!(offset & 7) && offset <= 32760) { |
498 | assem_debug("str %s,[x%d+%#lx]\n", regname64[rt], FP, offset); |
3968e69e |
499 | output_w32(0xf9000000 | imm12_rn_rd(offset >> 3, FP, rt)); |
d1e4ebd9 |
500 | } |
501 | else |
3968e69e |
502 | abort(); |
d1e4ebd9 |
503 | } |
504 | |
687b4580 |
505 | static void emit_storereg(u_int r, u_int hr) |
be516ebe |
506 | { |
507 | assert(r < 64); |
7c3a5182 |
508 | void *addr = &psxRegs.GPR.r[r]; |
be516ebe |
509 | switch (r) { |
7c3a5182 |
510 | //case HIREG: addr = &hi; break; |
511 | //case LOREG: addr = &lo; break; |
be516ebe |
512 | case CCREG: addr = &cycle_count; break; |
7c3a5182 |
513 | default: assert(r < 34); break; |
be516ebe |
514 | } |
687b4580 |
515 | emit_writeword(hr, addr); |
be516ebe |
516 | } |
517 | |
518 | static void emit_test(u_int rs, u_int rt) |
519 | { |
d1e4ebd9 |
520 | assem_debug("tst %s,%s\n", regname[rs], regname[rt]); |
521 | output_w32(0x6a000000 | rm_rn_rd(rt, rs, WZR)); |
be516ebe |
522 | } |
523 | |
d1e4ebd9 |
524 | static void emit_testimm(u_int rs, u_int imm) |
be516ebe |
525 | { |
d1e4ebd9 |
526 | u_int immr, imms; |
687b4580 |
527 | assem_debug("tst %s,#%#x\n", regname[rs], imm); |
d1e4ebd9 |
528 | assert(is_rotated_mask(imm)); // good enough for PCSX |
529 | gen_logical_imm(imm, &immr, &imms); |
3968e69e |
530 | output_w32(0x72000000 | n_immr_imms_rn_rd(0, immr, imms, rs, WZR)); |
be516ebe |
531 | } |
532 | |
533 | static void emit_not(u_int rs,u_int rt) |
534 | { |
535 | assem_debug("mvn %s,%s\n",regname[rt],regname[rs]); |
d1e4ebd9 |
536 | output_w32(0x2a200000 | rm_rn_rd(rs, WZR, rt)); |
be516ebe |
537 | } |
538 | |
be516ebe |
539 | static void emit_and(u_int rs1,u_int rs2,u_int rt) |
540 | { |
541 | assem_debug("and %s,%s,%s\n",regname[rt],regname[rs1],regname[rs2]); |
d1e4ebd9 |
542 | output_w32(0x0a000000 | rm_rn_rd(rs2, rs1, rt)); |
be516ebe |
543 | } |
544 | |
545 | static void emit_or(u_int rs1,u_int rs2,u_int rt) |
546 | { |
547 | assem_debug("orr %s,%s,%s\n",regname[rt],regname[rs1],regname[rs2]); |
d1e4ebd9 |
548 | output_w32(0x2a000000 | rm_rn_rd(rs2, rs1, rt)); |
be516ebe |
549 | } |
550 | |
3968e69e |
551 | static void emit_bic(u_int rs1,u_int rs2,u_int rt) |
552 | { |
553 | assem_debug("bic %s,%s,%s\n",regname[rt],regname[rs1],regname[rs2]); |
554 | output_w32(0x0a200000 | rm_rn_rd(rs2, rs1, rt)); |
555 | } |
556 | |
be516ebe |
557 | static void emit_orrshl_imm(u_int rs,u_int imm,u_int rt) |
558 | { |
be516ebe |
559 | assem_debug("orr %s,%s,%s,lsl #%d\n",regname[rt],regname[rt],regname[rs],imm); |
d1e4ebd9 |
560 | output_w32(0x2a000000 | rm_imm6_rn_rd(rs, imm, rt, rt)); |
be516ebe |
561 | } |
562 | |
563 | static void emit_orrshr_imm(u_int rs,u_int imm,u_int rt) |
564 | { |
be516ebe |
565 | assem_debug("orr %s,%s,%s,lsr #%d\n",regname[rt],regname[rt],regname[rs],imm); |
d1e4ebd9 |
566 | output_w32(0x2a400000 | rm_imm6_rn_rd(rs, imm, rt, rt)); |
be516ebe |
567 | } |
568 | |
3968e69e |
569 | static void emit_bicsar_imm(u_int rs,u_int imm,u_int rt) |
570 | { |
571 | assem_debug("bic %s,%s,%s,asr #%d\n",regname[rt],regname[rt],regname[rs],imm); |
572 | output_w32(0x0aa00000 | rm_imm6_rn_rd(rs, imm, rt, rt)); |
573 | } |
574 | |
be516ebe |
575 | static void emit_xor(u_int rs1,u_int rs2,u_int rt) |
576 | { |
577 | assem_debug("eor %s,%s,%s\n",regname[rt],regname[rs1],regname[rs2]); |
d1e4ebd9 |
578 | output_w32(0x4a000000 | rm_rn_rd(rs2, rs1, rt)); |
be516ebe |
579 | } |
580 | |
3968e69e |
581 | static void emit_xorsar_imm(u_int rs1, u_int rs2, u_int imm, u_int rt) |
582 | { |
583 | assem_debug("eor %s,%s,%s,asr #%d\n",regname[rt],regname[rs1],regname[rs2],imm); |
584 | output_w32(0x4a800000 | rm_imm6_rn_rd(rs2, imm, rs1, rt)); |
585 | } |
586 | |
d1e4ebd9 |
587 | static void emit_addimm_s(u_int s, u_int is64, u_int rs, uintptr_t imm, u_int rt) |
be516ebe |
588 | { |
d1e4ebd9 |
589 | unused const char *st = s ? "s" : ""; |
590 | s = s ? 0x20000000 : 0; |
591 | is64 = is64 ? 0x80000000 : 0; |
687b4580 |
592 | if (imm < 4096) { |
d1e4ebd9 |
593 | assem_debug("add%s %s,%s,%#lx\n", st, regname[rt], regname[rs], imm); |
594 | output_w32(0x11000000 | is64 | s | imm12_rn_rd(imm, rs, rt)); |
687b4580 |
595 | } |
596 | else if (-imm < 4096) { |
3968e69e |
597 | assem_debug("sub%s %s,%s,%#lx\n", st, regname[rt], regname[rs], -imm); |
d1e4ebd9 |
598 | output_w32(0x51000000 | is64 | s | imm12_rn_rd(-imm, rs, rt)); |
599 | } |
600 | else if (imm < 16777216) { |
601 | assem_debug("add %s,%s,#%#lx\n",regname[rt],regname[rt],imm&0xfff000); |
602 | output_w32(0x11400000 | is64 | imm12_rn_rd(imm >> 12, rs, rt)); |
603 | if ((imm & 0xfff) || s) { |
604 | assem_debug("add%s %s,%s,#%#lx\n",st,regname[rt],regname[rs],imm&0xfff); |
3968e69e |
605 | output_w32(0x11000000 | is64 | s | imm12_rn_rd(imm & 0xfff, rt, rt)); |
d1e4ebd9 |
606 | } |
607 | } |
608 | else if (-imm < 16777216) { |
609 | assem_debug("sub %s,%s,#%#lx\n",regname[rt],regname[rt],-imm&0xfff000); |
610 | output_w32(0x51400000 | is64 | imm12_rn_rd(-imm >> 12, rs, rt)); |
611 | if ((imm & 0xfff) || s) { |
612 | assem_debug("sub%s %s,%s,#%#lx\n",st,regname[rt],regname[rs],-imm&0xfff); |
613 | output_w32(0x51000000 | is64 | s | imm12_rn_rd(-imm & 0xfff, rt, rt)); |
614 | } |
687b4580 |
615 | } |
616 | else |
3968e69e |
617 | abort(); |
be516ebe |
618 | } |
619 | |
d1e4ebd9 |
620 | static void emit_addimm(u_int rs, uintptr_t imm, u_int rt) |
621 | { |
622 | emit_addimm_s(0, 0, rs, imm, rt); |
623 | } |
624 | |
625 | static void emit_addimm64(u_int rs, uintptr_t imm, u_int rt) |
626 | { |
627 | emit_addimm_s(0, 1, rs, imm, rt); |
628 | } |
629 | |
be516ebe |
630 | static void emit_addimm_and_set_flags(int imm, u_int rt) |
631 | { |
d1e4ebd9 |
632 | emit_addimm_s(1, 0, rt, imm, rt); |
be516ebe |
633 | } |
634 | |
d1e4ebd9 |
635 | static void emit_logicop_imm(u_int op, u_int rs, u_int imm, u_int rt) |
be516ebe |
636 | { |
d1e4ebd9 |
637 | const char *names[] = { "and", "orr", "eor", "ands" }; |
638 | const char *name = names[op]; |
639 | u_int immr, imms; |
640 | op = op << 29; |
641 | if (is_rotated_mask(imm)) { |
642 | gen_logical_imm(imm, &immr, &imms); |
643 | assem_debug("%s %s,%s,#%#x\n", name, regname[rt], regname[rs], imm); |
644 | output_w32(op | 0x12000000 | n_immr_imms_rn_rd(0, immr, imms, rs, rt)); |
645 | } |
646 | else { |
647 | if (rs == HOST_TEMPREG || rt != HOST_TEMPREG) |
648 | host_tempreg_acquire(); |
649 | emit_movimm(imm, HOST_TEMPREG); |
650 | assem_debug("%s %s,%s,%s\n", name, regname[rt], regname[rs], regname[HOST_TEMPREG]); |
651 | output_w32(op | 0x0a000000 | rm_rn_rd(HOST_TEMPREG, rs, rt)); |
652 | if (rs == HOST_TEMPREG || rt != HOST_TEMPREG) |
653 | host_tempreg_release(); |
654 | } |
655 | (void)name; |
be516ebe |
656 | } |
657 | |
d1e4ebd9 |
658 | static void emit_andimm(u_int rs, u_int imm, u_int rt) |
be516ebe |
659 | { |
d1e4ebd9 |
660 | if (imm == 0) |
661 | emit_zeroreg(rt); |
662 | else |
663 | emit_logicop_imm(0, rs, imm, rt); |
be516ebe |
664 | } |
665 | |
d1e4ebd9 |
666 | static void emit_orimm(u_int rs, u_int imm, u_int rt) |
be516ebe |
667 | { |
d1e4ebd9 |
668 | if (imm == 0) { |
669 | if (rs != rt) |
670 | emit_mov(rs, rt); |
671 | } |
672 | else |
673 | emit_logicop_imm(1, rs, imm, rt); |
be516ebe |
674 | } |
675 | |
d1e4ebd9 |
676 | static void emit_xorimm(u_int rs, u_int imm, u_int rt) |
be516ebe |
677 | { |
d1e4ebd9 |
678 | if (imm == 0) { |
679 | if (rs != rt) |
680 | emit_mov(rs, rt); |
681 | } |
682 | else |
683 | emit_logicop_imm(2, rs, imm, rt); |
be516ebe |
684 | } |
685 | |
d1e4ebd9 |
686 | static void emit_sbfm(u_int rs,u_int imm,u_int rt) |
be516ebe |
687 | { |
d1e4ebd9 |
688 | assem_debug("sbfm %s,%s,#0,#%d\n",regname[rt],regname[rs],imm); |
689 | output_w32(0x13000000 | n_immr_imms_rn_rd(0, 0, imm, rs, rt)); |
be516ebe |
690 | } |
691 | |
d1e4ebd9 |
692 | static void emit_ubfm(u_int rs,u_int imm,u_int rt) |
be516ebe |
693 | { |
d1e4ebd9 |
694 | assem_debug("ubfm %s,%s,#0,#%d\n",regname[rt],regname[rs],imm); |
695 | output_w32(0x53000000 | n_immr_imms_rn_rd(0, 0, imm, rs, rt)); |
be516ebe |
696 | } |
697 | |
698 | static void emit_shlimm(u_int rs,u_int imm,u_int rt) |
699 | { |
be516ebe |
700 | assem_debug("lsl %s,%s,#%d\n",regname[rt],regname[rs],imm); |
d1e4ebd9 |
701 | output_w32(0x53000000 | n_immr_imms_rn_rd(0, (31-imm)+1, 31-imm, rs, rt)); |
be516ebe |
702 | } |
703 | |
3968e69e |
704 | static void emit_shrimm(u_int rs,u_int imm,u_int rt) |
be516ebe |
705 | { |
3968e69e |
706 | assem_debug("lsr %s,%s,#%d\n",regname[rt],regname[rs],imm); |
707 | output_w32(0x53000000 | n_immr_imms_rn_rd(0, imm, 31, rs, rt)); |
be516ebe |
708 | } |
709 | |
3968e69e |
710 | static void emit_shrimm64(u_int rs,u_int imm,u_int rt) |
be516ebe |
711 | { |
be516ebe |
712 | assem_debug("lsr %s,%s,#%d\n",regname[rt],regname[rs],imm); |
3968e69e |
713 | output_w32(0xd3400000 | n_immr_imms_rn_rd(0, imm, 63, rs, rt)); |
be516ebe |
714 | } |
715 | |
716 | static void emit_sarimm(u_int rs,u_int imm,u_int rt) |
717 | { |
be516ebe |
718 | assem_debug("asr %s,%s,#%d\n",regname[rt],regname[rs],imm); |
d1e4ebd9 |
719 | output_w32(0x13000000 | n_immr_imms_rn_rd(0, imm, 31, rs, rt)); |
be516ebe |
720 | } |
721 | |
722 | static void emit_rorimm(u_int rs,u_int imm,u_int rt) |
723 | { |
3968e69e |
724 | assem_debug("ror %s,%s,#%d\n",regname[rt],regname[rs],imm); |
d1e4ebd9 |
725 | output_w32(0x13800000 | rm_imm6_rn_rd(rs, imm, rs, rt)); |
be516ebe |
726 | } |
727 | |
728 | static void emit_signextend16(u_int rs, u_int rt) |
729 | { |
730 | assem_debug("sxth %s,%s\n", regname[rt], regname[rs]); |
d1e4ebd9 |
731 | output_w32(0x13000000 | n_immr_imms_rn_rd(0, 0, 15, rs, rt)); |
be516ebe |
732 | } |
733 | |
d1e4ebd9 |
734 | static void emit_shl(u_int rs,u_int rshift,u_int rt) |
be516ebe |
735 | { |
3968e69e |
736 | assem_debug("lsl %s,%s,%s\n",regname[rt],regname[rs],regname[rshift]); |
d1e4ebd9 |
737 | output_w32(0x1ac02000 | rm_rn_rd(rshift, rs, rt)); |
be516ebe |
738 | } |
739 | |
d1e4ebd9 |
740 | static void emit_shr(u_int rs,u_int rshift,u_int rt) |
be516ebe |
741 | { |
d1e4ebd9 |
742 | assem_debug("lsr %s,%s,%s\n",regname[rt],regname[rs],regname[rshift]); |
743 | output_w32(0x1ac02400 | rm_rn_rd(rshift, rs, rt)); |
be516ebe |
744 | } |
745 | |
d1e4ebd9 |
746 | static void emit_sar(u_int rs,u_int rshift,u_int rt) |
be516ebe |
747 | { |
d1e4ebd9 |
748 | assem_debug("asr %s,%s,%s\n",regname[rt],regname[rs],regname[rshift]); |
749 | output_w32(0x1ac02800 | rm_rn_rd(rshift, rs, rt)); |
be516ebe |
750 | } |
751 | |
d1e4ebd9 |
752 | static void emit_cmpimm(u_int rs, u_int imm) |
be516ebe |
753 | { |
d1e4ebd9 |
754 | if (imm < 4096) { |
755 | assem_debug("cmp %s,%#x\n", regname[rs], imm); |
756 | output_w32(0x71000000 | imm12_rn_rd(imm, rs, WZR)); |
757 | } |
758 | else if (-imm < 4096) { |
759 | assem_debug("cmn %s,%#x\n", regname[rs], imm); |
760 | output_w32(0x31000000 | imm12_rn_rd(-imm, rs, WZR)); |
761 | } |
762 | else if (imm < 16777216 && !(imm & 0xfff)) { |
3968e69e |
763 | assem_debug("cmp %s,#%#x\n", regname[rs], imm); |
d1e4ebd9 |
764 | output_w32(0x71400000 | imm12_rn_rd(imm >> 12, rs, WZR)); |
765 | } |
766 | else { |
767 | host_tempreg_acquire(); |
768 | emit_movimm(imm, HOST_TEMPREG); |
769 | assem_debug("cmp %s,%s\n", regname[rs], regname[HOST_TEMPREG]); |
770 | output_w32(0x6b000000 | rm_rn_rd(HOST_TEMPREG, rs, WZR)); |
771 | host_tempreg_release(); |
772 | } |
be516ebe |
773 | } |
774 | |
d1e4ebd9 |
775 | static void emit_cmov_imm(u_int cond0, u_int cond1, u_int imm, u_int rt) |
be516ebe |
776 | { |
d1e4ebd9 |
777 | assert(imm == 0 || imm == 1); |
778 | assert(cond0 < 0x10); |
779 | assert(cond1 < 0x10); |
780 | if (imm) { |
781 | assem_debug("csinc %s,%s,%s,%s\n",regname[rt],regname[rt],regname[WZR],condname[cond1]); |
782 | output_w32(0x1a800400 | (cond1 << 12) | rm_rn_rd(WZR, rt, rt)); |
783 | } else { |
784 | assem_debug("csel %s,%s,%s,%s\n",regname[rt],regname[WZR],regname[rt],condname[cond0]); |
785 | output_w32(0x1a800000 | (cond0 << 12) | rm_rn_rd(rt, WZR, rt)); |
786 | } |
be516ebe |
787 | } |
788 | |
d1e4ebd9 |
789 | static void emit_cmovne_imm(u_int imm,u_int rt) |
be516ebe |
790 | { |
d1e4ebd9 |
791 | emit_cmov_imm(COND_NE, COND_EQ, imm, rt); |
be516ebe |
792 | } |
793 | |
d1e4ebd9 |
794 | static void emit_cmovl_imm(u_int imm,u_int rt) |
be516ebe |
795 | { |
d1e4ebd9 |
796 | emit_cmov_imm(COND_LT, COND_GE, imm, rt); |
be516ebe |
797 | } |
798 | |
799 | static void emit_cmovb_imm(int imm,u_int rt) |
800 | { |
d1e4ebd9 |
801 | emit_cmov_imm(COND_CC, COND_CS, imm, rt); |
be516ebe |
802 | } |
803 | |
3968e69e |
804 | static void emit_cmoveq_reg(u_int rs,u_int rt) |
be516ebe |
805 | { |
3968e69e |
806 | assem_debug("csel %s,%s,%s,eq\n",regname[rt],regname[rs],regname[rt]); |
807 | output_w32(0x1a800000 | (COND_EQ << 12) | rm_rn_rd(rt, rs, rt)); |
be516ebe |
808 | } |
809 | |
810 | static void emit_cmovne_reg(u_int rs,u_int rt) |
811 | { |
d1e4ebd9 |
812 | assem_debug("csel %s,%s,%s,ne\n",regname[rt],regname[rs],regname[rt]); |
813 | output_w32(0x1a800000 | (COND_NE << 12) | rm_rn_rd(rt, rs, rt)); |
be516ebe |
814 | } |
815 | |
816 | static void emit_cmovl_reg(u_int rs,u_int rt) |
817 | { |
d1e4ebd9 |
818 | assem_debug("csel %s,%s,%s,lt\n",regname[rt],regname[rs],regname[rt]); |
819 | output_w32(0x1a800000 | (COND_LT << 12) | rm_rn_rd(rt, rs, rt)); |
be516ebe |
820 | } |
821 | |
e3c6bdb5 |
822 | static void emit_cmovb_reg(u_int rs,u_int rt) |
823 | { |
824 | assem_debug("csel %s,%s,%s,cc\n",regname[rt],regname[rs],regname[rt]); |
825 | output_w32(0x1a800000 | (COND_CC << 12) | rm_rn_rd(rt, rs, rt)); |
826 | } |
827 | |
be516ebe |
828 | static void emit_cmovs_reg(u_int rs,u_int rt) |
829 | { |
d1e4ebd9 |
830 | assem_debug("csel %s,%s,%s,mi\n",regname[rt],regname[rs],regname[rt]); |
831 | output_w32(0x1a800000 | (COND_MI << 12) | rm_rn_rd(rt, rs, rt)); |
be516ebe |
832 | } |
833 | |
3968e69e |
834 | static void emit_csinvle_reg(u_int rs1,u_int rs2,u_int rt) |
835 | { |
836 | assem_debug("csinv %s,%s,%s,le\n",regname[rt],regname[rs1],regname[rs2]); |
837 | output_w32(0x5a800000 | (COND_LE << 12) | rm_rn_rd(rs2, rs1, rt)); |
838 | } |
839 | |
be516ebe |
840 | static void emit_slti32(u_int rs,int imm,u_int rt) |
841 | { |
842 | if(rs!=rt) emit_zeroreg(rt); |
843 | emit_cmpimm(rs,imm); |
844 | if(rs==rt) emit_movimm(0,rt); |
845 | emit_cmovl_imm(1,rt); |
846 | } |
847 | |
848 | static void emit_sltiu32(u_int rs,int imm,u_int rt) |
849 | { |
850 | if(rs!=rt) emit_zeroreg(rt); |
851 | emit_cmpimm(rs,imm); |
852 | if(rs==rt) emit_movimm(0,rt); |
853 | emit_cmovb_imm(1,rt); |
854 | } |
855 | |
856 | static void emit_cmp(u_int rs,u_int rt) |
857 | { |
858 | assem_debug("cmp %s,%s\n",regname[rs],regname[rt]); |
d1e4ebd9 |
859 | output_w32(0x6b000000 | rm_rn_rd(rt, rs, WZR)); |
be516ebe |
860 | } |
861 | |
882a08fc |
862 | static void emit_cmpcs(u_int rs,u_int rt) |
863 | { |
864 | assem_debug("ccmp %s,%s,#0,cs\n",regname[rs],regname[rt]); |
865 | output_w32(0x7a400000 | (COND_CS << 12) | rm_rn_rd(rt, rs, 0)); |
866 | } |
867 | |
be516ebe |
868 | static void emit_set_gz32(u_int rs, u_int rt) |
869 | { |
870 | //assem_debug("set_gz32\n"); |
871 | emit_cmpimm(rs,1); |
872 | emit_movimm(1,rt); |
873 | emit_cmovl_imm(0,rt); |
874 | } |
875 | |
876 | static void emit_set_nz32(u_int rs, u_int rt) |
877 | { |
878 | //assem_debug("set_nz32\n"); |
d1e4ebd9 |
879 | if(rs!=rt) emit_mov(rs,rt); |
880 | emit_test(rs,rs); |
881 | emit_cmovne_imm(1,rt); |
be516ebe |
882 | } |
883 | |
884 | static void emit_set_if_less32(u_int rs1, u_int rs2, u_int rt) |
885 | { |
886 | //assem_debug("set if less (%%%s,%%%s),%%%s\n",regname[rs1],regname[rs2],regname[rt]); |
887 | if(rs1!=rt&&rs2!=rt) emit_zeroreg(rt); |
888 | emit_cmp(rs1,rs2); |
889 | if(rs1==rt||rs2==rt) emit_movimm(0,rt); |
890 | emit_cmovl_imm(1,rt); |
891 | } |
892 | |
893 | static void emit_set_if_carry32(u_int rs1, u_int rs2, u_int rt) |
894 | { |
895 | //assem_debug("set if carry (%%%s,%%%s),%%%s\n",regname[rs1],regname[rs2],regname[rt]); |
896 | if(rs1!=rt&&rs2!=rt) emit_zeroreg(rt); |
897 | emit_cmp(rs1,rs2); |
898 | if(rs1==rt||rs2==rt) emit_movimm(0,rt); |
899 | emit_cmovb_imm(1,rt); |
900 | } |
901 | |
2a014d73 |
902 | static int can_jump_or_call(const void *a) |
903 | { |
904 | intptr_t diff = (u_char *)a - out; |
905 | return (-134217728 <= diff && diff <= 134217727); |
906 | } |
907 | |
d1e4ebd9 |
908 | static void emit_call(const void *a) |
be516ebe |
909 | { |
d1e4ebd9 |
910 | intptr_t diff = (u_char *)a - out; |
911 | assem_debug("bl %p (%p+%lx)%s\n", a, out, diff, func_name(a)); |
687b4580 |
912 | assert(!(diff & 3)); |
913 | if (-134217728 <= diff && diff <= 134217727) |
914 | output_w32(0x94000000 | ((diff >> 2) & 0x03ffffff)); |
915 | else |
3968e69e |
916 | abort(); |
be516ebe |
917 | } |
918 | |
d1e4ebd9 |
919 | static void emit_jmp(const void *a) |
be516ebe |
920 | { |
d1e4ebd9 |
921 | assem_debug("b %p (%p+%lx)%s\n", a, out, (u_char *)a - out, func_name(a)); |
922 | u_int offset = genjmp(a); |
923 | output_w32(0x14000000 | offset); |
be516ebe |
924 | } |
925 | |
d1e4ebd9 |
926 | static void emit_jne(const void *a) |
be516ebe |
927 | { |
d1e4ebd9 |
928 | assem_debug("bne %p\n", a); |
929 | u_int offset = genjmpcc(a); |
930 | output_w32(0x54000000 | (offset << 5) | COND_NE); |
be516ebe |
931 | } |
932 | |
7c3a5182 |
933 | static void emit_jeq(const void *a) |
be516ebe |
934 | { |
d1e4ebd9 |
935 | assem_debug("beq %p\n", a); |
936 | u_int offset = genjmpcc(a); |
937 | output_w32(0x54000000 | (offset << 5) | COND_EQ); |
be516ebe |
938 | } |
939 | |
7c3a5182 |
940 | static void emit_js(const void *a) |
be516ebe |
941 | { |
d1e4ebd9 |
942 | assem_debug("bmi %p\n", a); |
943 | u_int offset = genjmpcc(a); |
944 | output_w32(0x54000000 | (offset << 5) | COND_MI); |
be516ebe |
945 | } |
946 | |
7c3a5182 |
947 | static void emit_jns(const void *a) |
be516ebe |
948 | { |
d1e4ebd9 |
949 | assem_debug("bpl %p\n", a); |
950 | u_int offset = genjmpcc(a); |
951 | output_w32(0x54000000 | (offset << 5) | COND_PL); |
be516ebe |
952 | } |
953 | |
7c3a5182 |
954 | static void emit_jl(const void *a) |
be516ebe |
955 | { |
d1e4ebd9 |
956 | assem_debug("blt %p\n", a); |
957 | u_int offset = genjmpcc(a); |
958 | output_w32(0x54000000 | (offset << 5) | COND_LT); |
be516ebe |
959 | } |
960 | |
7c3a5182 |
961 | static void emit_jge(const void *a) |
be516ebe |
962 | { |
d1e4ebd9 |
963 | assem_debug("bge %p\n", a); |
964 | u_int offset = genjmpcc(a); |
965 | output_w32(0x54000000 | (offset << 5) | COND_GE); |
be516ebe |
966 | } |
967 | |
7c3a5182 |
968 | static void emit_jno(const void *a) |
be516ebe |
969 | { |
d1e4ebd9 |
970 | assem_debug("bvc %p\n", a); |
971 | u_int offset = genjmpcc(a); |
972 | output_w32(0x54000000 | (offset << 5) | COND_VC); |
be516ebe |
973 | } |
974 | |
7c3a5182 |
975 | static void emit_jc(const void *a) |
be516ebe |
976 | { |
d1e4ebd9 |
977 | assem_debug("bcs %p\n", a); |
978 | u_int offset = genjmpcc(a); |
979 | output_w32(0x54000000 | (offset << 5) | COND_CS); |
be516ebe |
980 | } |
981 | |
3968e69e |
982 | static void emit_cb(u_int isnz, u_int is64, const void *a, u_int r) |
be516ebe |
983 | { |
3968e69e |
984 | assem_debug("cb%sz %s,%p\n", isnz?"n":"", is64?regname64[r]:regname[r], a); |
d1e4ebd9 |
985 | u_int offset = genjmpcc(a); |
3968e69e |
986 | is64 = is64 ? 0x80000000 : 0; |
987 | isnz = isnz ? 0x01000000 : 0; |
988 | output_w32(0x34000000 | is64 | isnz | imm19_rt(offset, r)); |
989 | } |
990 | |
104df9d3 |
991 | static unused void emit_cbz(const void *a, u_int r) |
3968e69e |
992 | { |
993 | emit_cb(0, 0, a, r); |
be516ebe |
994 | } |
995 | |
996 | static void emit_jmpreg(u_int r) |
997 | { |
3968e69e |
998 | assem_debug("br %s\n", regname64[r]); |
d1e4ebd9 |
999 | output_w32(0xd61f0000 | rm_rn_rd(0, r, 0)); |
be516ebe |
1000 | } |
1001 | |
1002 | static void emit_retreg(u_int r) |
1003 | { |
d1e4ebd9 |
1004 | assem_debug("ret %s\n", r == LR ? "" : regname64[r]); |
be516ebe |
1005 | output_w32(0xd65f0000 | rm_rn_rd(0, r, 0)); |
1006 | } |
1007 | |
1008 | static void emit_ret(void) |
1009 | { |
1010 | emit_retreg(LR); |
1011 | } |
1012 | |
d1e4ebd9 |
1013 | static void emit_adr(void *addr, u_int rt) |
1014 | { |
1015 | intptr_t offset = (u_char *)addr - out; |
1016 | assert(-1048576 <= offset && offset < 1048576); |
3968e69e |
1017 | assert(rt < 31); |
d1e4ebd9 |
1018 | assem_debug("adr x%d,#%#lx\n", rt, offset); |
1019 | output_w32(0x10000000 | ((offset&0x3) << 29) | (((offset>>2)&0x7ffff) << 5) | rt); |
1020 | } |
1021 | |
3968e69e |
1022 | static void emit_adrp(void *addr, u_int rt) |
1023 | { |
1024 | intptr_t offset = ((intptr_t)addr & ~0xfffl) - ((intptr_t)out & ~0xfffl); |
1025 | assert(-4294967296l <= offset && offset < 4294967296l); |
1026 | assert(rt < 31); |
1027 | offset >>= 12; |
1028 | assem_debug("adrp %s,#%#lx(000)\n",regname64[rt],offset); |
1029 | output_w32(0x90000000 | ((offset&0x3)<<29) | (((offset>>2)&0x7ffff)<<5) | rt); |
1030 | } |
1031 | |
be516ebe |
1032 | static void emit_readword_indexed(int offset, u_int rs, u_int rt) |
1033 | { |
d1e4ebd9 |
1034 | assem_debug("ldur %s,[%s+%#x]\n",regname[rt],regname64[rs],offset); |
1035 | assert(-256 <= offset && offset < 256); |
1036 | output_w32(0xb8400000 | imm9_rn_rt(offset&0x1ff, rs, rt)); |
1037 | } |
1038 | |
1039 | static void emit_strb_dualindexed(u_int rs1, u_int rs2, u_int rt) |
1040 | { |
1041 | assem_debug("strb %s, [%s,%s]\n",regname[rt],regname64[rs1],regname[rs2]); |
1042 | output_w32(0x38204800 | rm_rn_rd(rs2, rs1, rt)); |
1043 | } |
1044 | |
1045 | static void emit_strh_dualindexed(u_int rs1, u_int rs2, u_int rt) |
1046 | { |
1047 | assem_debug("strh %s, [%s,%s]\n",regname[rt],regname64[rs1],regname[rs2]); |
1048 | output_w32(0x78204800 | rm_rn_rd(rs2, rs1, rt)); |
1049 | } |
1050 | |
1051 | static void emit_str_dualindexed(u_int rs1, u_int rs2, u_int rt) |
1052 | { |
1053 | assem_debug("str %s, [%s,%s]\n",regname[rt],regname64[rs1],regname[rs2]); |
1054 | output_w32(0xb8204800 | rm_rn_rd(rs2, rs1, rt)); |
1055 | } |
1056 | |
1057 | static void emit_readdword_dualindexedx8(u_int rs1, u_int rs2, u_int rt) |
1058 | { |
1059 | assem_debug("ldr %s, [%s,%s, uxtw #3]\n",regname64[rt],regname64[rs1],regname[rs2]); |
1060 | output_w32(0xf8605800 | rm_rn_rd(rs2, rs1, rt)); |
1061 | } |
39b71d9a |
1062 | #define emit_readptr_dualindexedx_ptrlen emit_readdword_dualindexedx8 |
d1e4ebd9 |
1063 | |
1064 | static void emit_ldrb_dualindexed(u_int rs1, u_int rs2, u_int rt) |
1065 | { |
1066 | assem_debug("ldrb %s, [%s,%s]\n",regname[rt],regname64[rs1],regname[rs2]); |
1067 | output_w32(0x38604800 | rm_rn_rd(rs2, rs1, rt)); |
1068 | } |
1069 | |
1070 | static void emit_ldrsb_dualindexed(u_int rs1, u_int rs2, u_int rt) |
1071 | { |
1072 | assem_debug("ldrsb %s, [%s,%s]\n",regname[rt],regname64[rs1],regname[rs2]); |
1073 | output_w32(0x38a04800 | rm_rn_rd(rs2, rs1, rt)); |
1074 | } |
1075 | |
1076 | static void emit_ldrh_dualindexed(u_int rs1, u_int rs2, u_int rt) |
1077 | { |
1078 | assem_debug("ldrh %s, [%s,%s, uxtw]\n",regname[rt],regname64[rs1],regname[rs2]); |
1079 | output_w32(0x78604800 | rm_rn_rd(rs2, rs1, rt)); |
1080 | } |
1081 | |
1082 | static void emit_ldrsh_dualindexed(u_int rs1, u_int rs2, u_int rt) |
1083 | { |
1084 | assem_debug("ldrsh %s, [%s,%s, uxtw]\n",regname[rt],regname64[rs1],regname[rs2]); |
1085 | output_w32(0x78a04800 | rm_rn_rd(rs2, rs1, rt)); |
1086 | } |
1087 | |
1088 | static void emit_ldr_dualindexed(u_int rs1, u_int rs2, u_int rt) |
1089 | { |
1090 | assem_debug("ldr %s, [%s,%s, uxtw]\n",regname[rt],regname64[rs1],regname[rs2]); |
1091 | output_w32(0xb8604800 | rm_rn_rd(rs2, rs1, rt)); |
be516ebe |
1092 | } |
1093 | |
be516ebe |
1094 | static void emit_movsbl_indexed(int offset, u_int rs, u_int rt) |
1095 | { |
d1e4ebd9 |
1096 | assem_debug("ldursb %s,[%s+%#x]\n",regname[rt],regname64[rs],offset); |
1097 | assert(-256 <= offset && offset < 256); |
1098 | output_w32(0x38c00000 | imm9_rn_rt(offset&0x1ff, rs, rt)); |
be516ebe |
1099 | } |
1100 | |
1101 | static void emit_movswl_indexed(int offset, u_int rs, u_int rt) |
1102 | { |
d1e4ebd9 |
1103 | assem_debug("ldursh %s,[%s+%#x]\n",regname[rt],regname64[rs],offset); |
1104 | assert(-256 <= offset && offset < 256); |
1105 | output_w32(0x78c00000 | imm9_rn_rt(offset&0x1ff, rs, rt)); |
be516ebe |
1106 | } |
1107 | |
1108 | static void emit_movzbl_indexed(int offset, u_int rs, u_int rt) |
1109 | { |
d1e4ebd9 |
1110 | assem_debug("ldurb %s,[%s+%#x]\n",regname[rt],regname64[rs],offset); |
1111 | assert(-256 <= offset && offset < 256); |
1112 | output_w32(0x38400000 | imm9_rn_rt(offset&0x1ff, rs, rt)); |
be516ebe |
1113 | } |
1114 | |
1115 | static void emit_movzwl_indexed(int offset, u_int rs, u_int rt) |
1116 | { |
d1e4ebd9 |
1117 | assem_debug("ldurh %s,[%s+%#x]\n",regname[rt],regname64[rs],offset); |
1118 | assert(-256 <= offset && offset < 256); |
1119 | output_w32(0x78400000 | imm9_rn_rt(offset&0x1ff, rs, rt)); |
be516ebe |
1120 | } |
1121 | |
be516ebe |
1122 | static void emit_writeword_indexed(u_int rt, int offset, u_int rs) |
1123 | { |
3968e69e |
1124 | if (!(offset & 3) && (u_int)offset <= 16380) { |
1125 | assem_debug("str %s,[%s+%#x]\n", regname[rt], regname[rs], offset); |
687b4580 |
1126 | output_w32(0xb9000000 | imm12_rn_rd(offset >> 2, rs, rt)); |
3968e69e |
1127 | } |
1128 | else if (-256 <= offset && offset < 256) { |
1129 | assem_debug("stur %s,[%s+%#x]\n", regname[rt], regname[rs], offset); |
1130 | output_w32(0xb8000000 | imm9_rn_rt(offset & 0x1ff, rs, rt)); |
1131 | } |
687b4580 |
1132 | else |
1133 | assert(0); |
be516ebe |
1134 | } |
1135 | |
1136 | static void emit_writehword_indexed(u_int rt, int offset, u_int rs) |
1137 | { |
3968e69e |
1138 | if (!(offset & 1) && (u_int)offset <= 8190) { |
1139 | assem_debug("strh %s,[%s+%#x]\n", regname[rt], regname64[rs], offset); |
687b4580 |
1140 | output_w32(0x79000000 | imm12_rn_rd(offset >> 1, rs, rt)); |
3968e69e |
1141 | } |
1142 | else if (-256 <= offset && offset < 256) { |
1143 | assem_debug("sturh %s,[%s+%#x]\n", regname[rt], regname64[rs], offset); |
1144 | output_w32(0x78000000 | imm9_rn_rt(offset & 0x1ff, rs, rt)); |
1145 | } |
687b4580 |
1146 | else |
1147 | assert(0); |
be516ebe |
1148 | } |
1149 | |
1150 | static void emit_writebyte_indexed(u_int rt, int offset, u_int rs) |
1151 | { |
3968e69e |
1152 | if ((u_int)offset < 4096) { |
1153 | assem_debug("strb %s,[%s+%#x]\n", regname[rt], regname64[rs], offset); |
687b4580 |
1154 | output_w32(0x39000000 | imm12_rn_rd(offset, rs, rt)); |
3968e69e |
1155 | } |
1156 | else if (-256 <= offset && offset < 256) { |
1157 | assem_debug("sturb %s,[%s+%#x]\n", regname[rt], regname64[rs], offset); |
1158 | output_w32(0x38000000 | imm9_rn_rt(offset & 0x1ff, rs, rt)); |
1159 | } |
687b4580 |
1160 | else |
1161 | assert(0); |
be516ebe |
1162 | } |
1163 | |
3968e69e |
1164 | static void emit_umull(u_int rs1, u_int rs2, u_int rt) |
be516ebe |
1165 | { |
3968e69e |
1166 | assem_debug("umull %s,%s,%s\n",regname64[rt],regname[rs1],regname[rs2]); |
1167 | output_w32(0x9ba00000 | rm_ra_rn_rd(rs2, WZR, rs1, rt)); |
be516ebe |
1168 | } |
1169 | |
3968e69e |
1170 | static void emit_smull(u_int rs1, u_int rs2, u_int rt) |
be516ebe |
1171 | { |
3968e69e |
1172 | assem_debug("smull %s,%s,%s\n",regname64[rt],regname[rs1],regname[rs2]); |
1173 | output_w32(0x9b200000 | rm_ra_rn_rd(rs2, WZR, rs1, rt)); |
1174 | } |
1175 | |
1176 | static void emit_msub(u_int rs1, u_int rs2, u_int rs3, u_int rt) |
1177 | { |
1178 | assem_debug("msub %s,%s,%s,%s\n",regname[rt],regname[rs1],regname[rs2],regname[rs3]); |
1179 | output_w32(0x1b008000 | rm_ra_rn_rd(rs2, rs3, rs1, rt)); |
1180 | } |
1181 | |
1182 | static void emit_sdiv(u_int rs1, u_int rs2, u_int rt) |
1183 | { |
1184 | assem_debug("sdiv %s,%s,%s\n",regname[rt],regname[rs1],regname[rs2]); |
1185 | output_w32(0x1ac00c00 | rm_rn_rd(rs2, rs1, rt)); |
be516ebe |
1186 | } |
1187 | |
3968e69e |
1188 | static void emit_udiv(u_int rs1, u_int rs2, u_int rt) |
1189 | { |
1190 | assem_debug("udiv %s,%s,%s\n",regname[rt],regname[rs1],regname[rs2]); |
1191 | output_w32(0x1ac00800 | rm_rn_rd(rs2, rs1, rt)); |
1192 | } |
1193 | |
1194 | static void emit_clz(u_int rs, u_int rt) |
be516ebe |
1195 | { |
1196 | assem_debug("clz %s,%s\n",regname[rt],regname[rs]); |
3968e69e |
1197 | output_w32(0x5ac01000 | rn_rd(rs, rt)); |
be516ebe |
1198 | } |
1199 | |
be516ebe |
1200 | // special case for checking invalid_code |
d1e4ebd9 |
1201 | static void emit_cmpmem_indexedsr12_reg(u_int rbase, u_int r, u_int imm) |
be516ebe |
1202 | { |
d1e4ebd9 |
1203 | host_tempreg_acquire(); |
1204 | emit_shrimm(r, 12, HOST_TEMPREG); |
3968e69e |
1205 | assem_debug("ldrb %s,[%s,%s,uxtw]\n",regname[HOST_TEMPREG],regname64[rbase],regname[HOST_TEMPREG]); |
1206 | output_w32(0x38604800 | rm_rn_rd(HOST_TEMPREG, rbase, HOST_TEMPREG)); |
d1e4ebd9 |
1207 | emit_cmpimm(HOST_TEMPREG, imm); |
1208 | host_tempreg_release(); |
be516ebe |
1209 | } |
1210 | |
3968e69e |
1211 | // special for loadlr_assemble, rs2 is destroyed |
1212 | static void emit_bic_lsl(u_int rs1,u_int rs2,u_int shift,u_int rt) |
be516ebe |
1213 | { |
3968e69e |
1214 | emit_shl(rs2, shift, rs2); |
1215 | emit_bic(rs1, rs2, rt); |
be516ebe |
1216 | } |
1217 | |
3968e69e |
1218 | static void emit_bic_lsr(u_int rs1,u_int rs2,u_int shift,u_int rt) |
be516ebe |
1219 | { |
3968e69e |
1220 | emit_shr(rs2, shift, rs2); |
1221 | emit_bic(rs1, rs2, rt); |
be516ebe |
1222 | } |
1223 | |
687b4580 |
1224 | static void emit_ldst(int is_st, int is64, u_int rt, u_int rn, u_int ofs) |
be516ebe |
1225 | { |
687b4580 |
1226 | u_int op = 0xb9000000; |
d1e4ebd9 |
1227 | unused const char *ldst = is_st ? "st" : "ld"; |
1228 | unused char rp = is64 ? 'x' : 'w'; |
687b4580 |
1229 | assem_debug("%sr %c%d,[x%d,#%#x]\n", ldst, rp, rt, rn, ofs); |
1230 | is64 = is64 ? 1 : 0; |
1231 | assert((ofs & ((1 << (2+is64)) - 1)) == 0); |
1232 | ofs = (ofs >> (2+is64)); |
687b4580 |
1233 | if (!is_st) op |= 0x00400000; |
1234 | if (is64) op |= 0x40000000; |
d1e4ebd9 |
1235 | output_w32(op | imm12_rn_rd(ofs, rn, rt)); |
be516ebe |
1236 | } |
1237 | |
687b4580 |
1238 | static void emit_ldstp(int is_st, int is64, u_int rt1, u_int rt2, u_int rn, int ofs) |
be516ebe |
1239 | { |
687b4580 |
1240 | u_int op = 0x29000000; |
d1e4ebd9 |
1241 | unused const char *ldst = is_st ? "st" : "ld"; |
1242 | unused char rp = is64 ? 'x' : 'w'; |
687b4580 |
1243 | assem_debug("%sp %c%d,%c%d,[x%d,#%#x]\n", ldst, rp, rt1, rp, rt2, rn, ofs); |
1244 | is64 = is64 ? 1 : 0; |
1245 | assert((ofs & ((1 << (2+is64)) - 1)) == 0); |
1246 | ofs = (ofs >> (2+is64)); |
1247 | assert(-64 <= ofs && ofs <= 63); |
1248 | ofs &= 0x7f; |
1249 | if (!is_st) op |= 0x00400000; |
1250 | if (is64) op |= 0x80000000; |
d1e4ebd9 |
1251 | output_w32(op | imm7_rt2_rn_rt(ofs, rt2, rn, rt1)); |
687b4580 |
1252 | } |
1253 | |
1254 | static void save_load_regs_all(int is_store, u_int reglist) |
1255 | { |
1256 | int ofs = 0, c = 0; |
1257 | u_int r, pair[2]; |
1258 | for (r = 0; reglist; r++, reglist >>= 1) { |
1259 | if (reglist & 1) |
1260 | pair[c++] = r; |
1261 | if (c == 2) { |
1262 | emit_ldstp(is_store, 1, pair[0], pair[1], SP, SSP_CALLEE_REGS + ofs); |
1263 | ofs += 8 * 2; |
1264 | c = 0; |
1265 | } |
1266 | } |
1267 | if (c) { |
1268 | emit_ldst(is_store, 1, pair[0], SP, SSP_CALLEE_REGS + ofs); |
1269 | ofs += 8; |
1270 | } |
1271 | assert(ofs <= SSP_CALLER_REGS); |
be516ebe |
1272 | } |
1273 | |
1274 | // Save registers before function call |
1275 | static void save_regs(u_int reglist) |
1276 | { |
1277 | reglist &= CALLER_SAVE_REGS; // only save the caller-save registers |
687b4580 |
1278 | save_load_regs_all(1, reglist); |
be516ebe |
1279 | } |
1280 | |
1281 | // Restore registers after function call |
1282 | static void restore_regs(u_int reglist) |
1283 | { |
1284 | reglist &= CALLER_SAVE_REGS; |
687b4580 |
1285 | save_load_regs_all(0, reglist); |
be516ebe |
1286 | } |
1287 | |
1288 | /* Stubs/epilogue */ |
1289 | |
1290 | static void literal_pool(int n) |
1291 | { |
1292 | (void)literals; |
1293 | } |
1294 | |
1295 | static void literal_pool_jumpover(int n) |
1296 | { |
1297 | } |
1298 | |
d1e4ebd9 |
1299 | // parsed by get_pointer, find_extjump_insn |
104df9d3 |
1300 | static void emit_extjump(u_char *addr, u_int target) |
be516ebe |
1301 | { |
d1e4ebd9 |
1302 | assert(((addr[3]&0xfc)==0x14) || ((addr[3]&0xff)==0x54)); // b or b.cond |
be516ebe |
1303 | |
d1e4ebd9 |
1304 | emit_movz(target & 0xffff, 0); |
1305 | emit_movk_lsl16(target >> 16, 0); |
1306 | |
1307 | // addr is in the current recompiled block (max 256k) |
1308 | // offset shouldn't exceed +/-1MB |
1309 | emit_adr(addr, 1); |
104df9d3 |
1310 | emit_far_jump(dyna_linker); |
be516ebe |
1311 | } |
1312 | |
d1e4ebd9 |
1313 | static void check_extjump2(void *src) |
be516ebe |
1314 | { |
d1e4ebd9 |
1315 | u_int *ptr = src; |
1316 | assert((ptr[0] & 0xffe0001f) == 0x52800000); // movz r0, #val |
1317 | (void)ptr; |
be516ebe |
1318 | } |
1319 | |
1320 | // put rt_val into rt, potentially making use of rs with value rs_val |
d1e4ebd9 |
1321 | static void emit_movimm_from(u_int rs_val, u_int rs, u_int rt_val, u_int rt) |
be516ebe |
1322 | { |
d1e4ebd9 |
1323 | int diff = rt_val - rs_val; |
3968e69e |
1324 | if ((-4096 < diff && diff < 4096) |
1325 | || (-16777216 < diff && diff < 16777216 && !(diff & 0xfff))) |
687b4580 |
1326 | emit_addimm(rs, diff, rt); |
3968e69e |
1327 | else if (rt_val == ~rs_val) |
1328 | emit_not(rs, rt); |
d1e4ebd9 |
1329 | else if (is_rotated_mask(rs_val ^ rt_val)) |
1330 | emit_xorimm(rs, rs_val ^ rt_val, rt); |
687b4580 |
1331 | else |
d1e4ebd9 |
1332 | emit_movimm(rt_val, rt); |
be516ebe |
1333 | } |
1334 | |
d1e4ebd9 |
1335 | // return 1 if the above function can do it's job cheaply |
687b4580 |
1336 | static int is_similar_value(u_int v1, u_int v2) |
be516ebe |
1337 | { |
687b4580 |
1338 | int diff = v1 - v2; |
3968e69e |
1339 | return (-4096 < diff && diff < 4096) |
1340 | || (-16777216 < diff && diff < 16777216 && !(diff & 0xfff)) |
1341 | || v1 == ~v2 |
d1e4ebd9 |
1342 | || is_rotated_mask(v1 ^ v2); |
1343 | } |
1344 | |
37387d8b |
1345 | static void emit_movimm_from64(u_int rs_val, u_int rs, uintptr_t rt_val, u_int rt) |
1346 | { |
1347 | if (rt_val < 0x100000000ull) { |
1348 | emit_movimm_from(rs_val, rs, rt_val, rt); |
1349 | return; |
1350 | } |
1351 | // just move the whole thing. At least on Linux all addresses |
1352 | // seem to be 48bit, so 3 insns - not great not terrible |
aaece508 |
1353 | emit_movimm64(rt_val, rt); |
37387d8b |
1354 | } |
1355 | |
1356 | // trashes x2 |
d1e4ebd9 |
1357 | static void pass_args64(u_int a0, u_int a1) |
1358 | { |
1359 | if(a0==1&&a1==0) { |
1360 | // must swap |
1361 | emit_mov64(a0,2); emit_mov64(a1,1); emit_mov64(2,0); |
1362 | } |
1363 | else if(a0!=0&&a1==0) { |
1364 | emit_mov64(a1,1); |
1365 | if (a0>=0) emit_mov64(a0,0); |
1366 | } |
1367 | else { |
1368 | if(a0>=0&&a0!=0) emit_mov64(a0,0); |
1369 | if(a1>=0&&a1!=1) emit_mov64(a1,1); |
1370 | } |
be516ebe |
1371 | } |
1372 | |
d1e4ebd9 |
1373 | static void loadstore_extend(enum stub_type type, u_int rs, u_int rt) |
1374 | { |
1375 | switch(type) { |
1376 | case LOADB_STUB: emit_sbfm(rs, 7, rt); break; |
1377 | case LOADBU_STUB: |
1378 | case STOREB_STUB: emit_ubfm(rs, 7, rt); break; |
1379 | case LOADH_STUB: emit_sbfm(rs, 15, rt); break; |
1380 | case LOADHU_STUB: |
1381 | case STOREH_STUB: emit_ubfm(rs, 15, rt); break; |
1382 | case LOADW_STUB: |
1383 | case STOREW_STUB: if (rs != rt) emit_mov(rs, rt); break; |
3968e69e |
1384 | default: assert(0); |
d1e4ebd9 |
1385 | } |
1386 | } |
1387 | |
1388 | #include "pcsxmem.h" |
be516ebe |
1389 | //#include "pcsxmem_inline.c" |
1390 | |
1391 | static void do_readstub(int n) |
1392 | { |
1393 | assem_debug("do_readstub %x\n",start+stubs[n].a*4); |
d1e4ebd9 |
1394 | set_jump_target(stubs[n].addr, out); |
1395 | enum stub_type type = stubs[n].type; |
1396 | int i = stubs[n].a; |
1397 | int rs = stubs[n].b; |
1398 | const struct regstat *i_regs = (void *)stubs[n].c; |
1399 | u_int reglist = stubs[n].e; |
1400 | const signed char *i_regmap = i_regs->regmap; |
1401 | int rt; |
cf95b4f0 |
1402 | if(dops[i].itype==C1LS||dops[i].itype==C2LS||dops[i].itype==LOADLR) { |
d1e4ebd9 |
1403 | rt=get_reg(i_regmap,FTEMP); |
1404 | }else{ |
cf95b4f0 |
1405 | rt=get_reg(i_regmap,dops[i].rt1); |
d1e4ebd9 |
1406 | } |
1407 | assert(rs>=0); |
1408 | int r,temp=-1,temp2=HOST_TEMPREG,regs_saved=0; |
1409 | void *restore_jump = NULL, *handler_jump = NULL; |
1410 | reglist|=(1<<rs); |
1411 | for (r = 0; r < HOST_CCREG; r++) { |
1412 | if (r != EXCLUDE_REG && ((1 << r) & reglist) == 0) { |
1413 | temp = r; |
1414 | break; |
1415 | } |
1416 | } |
cf95b4f0 |
1417 | if(rt>=0&&dops[i].rt1!=0) |
d1e4ebd9 |
1418 | reglist&=~(1<<rt); |
1419 | if(temp==-1) { |
1420 | save_regs(reglist); |
1421 | regs_saved=1; |
1422 | temp=(rs==0)?2:0; |
1423 | } |
1424 | if((regs_saved||(reglist&2)==0)&&temp!=1&&rs!=1) |
1425 | temp2=1; |
1426 | emit_readdword(&mem_rtab,temp); |
1427 | emit_shrimm(rs,12,temp2); |
1428 | emit_readdword_dualindexedx8(temp,temp2,temp2); |
1429 | emit_adds64(temp2,temp2,temp2); |
1430 | handler_jump=out; |
1431 | emit_jc(0); |
cf95b4f0 |
1432 | if(dops[i].itype==C1LS||dops[i].itype==C2LS||(rt>=0&&dops[i].rt1!=0)) { |
d1e4ebd9 |
1433 | switch(type) { |
1434 | case LOADB_STUB: emit_ldrsb_dualindexed(temp2,rs,rt); break; |
1435 | case LOADBU_STUB: emit_ldrb_dualindexed(temp2,rs,rt); break; |
1436 | case LOADH_STUB: emit_ldrsh_dualindexed(temp2,rs,rt); break; |
1437 | case LOADHU_STUB: emit_ldrh_dualindexed(temp2,rs,rt); break; |
1438 | case LOADW_STUB: emit_ldr_dualindexed(temp2,rs,rt); break; |
3968e69e |
1439 | default: assert(0); |
d1e4ebd9 |
1440 | } |
1441 | } |
1442 | if(regs_saved) { |
1443 | restore_jump=out; |
1444 | emit_jmp(0); // jump to reg restore |
1445 | } |
1446 | else |
1447 | emit_jmp(stubs[n].retaddr); // return address |
1448 | set_jump_target(handler_jump, out); |
1449 | |
1450 | if(!regs_saved) |
1451 | save_regs(reglist); |
1452 | void *handler=NULL; |
1453 | if(type==LOADB_STUB||type==LOADBU_STUB) |
1454 | handler=jump_handler_read8; |
1455 | if(type==LOADH_STUB||type==LOADHU_STUB) |
1456 | handler=jump_handler_read16; |
1457 | if(type==LOADW_STUB) |
1458 | handler=jump_handler_read32; |
1459 | assert(handler); |
1460 | pass_args64(rs,temp2); |
1461 | int cc=get_reg(i_regmap,CCREG); |
1462 | if(cc<0) |
1463 | emit_loadreg(CCREG,2); |
2330734f |
1464 | emit_addimm(cc<0?2:cc,(int)stubs[n].d,2); |
2a014d73 |
1465 | emit_far_call(handler); |
d1e4ebd9 |
1466 | // (no cycle reload after read) |
cf95b4f0 |
1467 | if(dops[i].itype==C1LS||dops[i].itype==C2LS||(rt>=0&&dops[i].rt1!=0)) { |
d1e4ebd9 |
1468 | loadstore_extend(type,0,rt); |
1469 | } |
1470 | if(restore_jump) |
1471 | set_jump_target(restore_jump, out); |
1472 | restore_regs(reglist); |
1473 | emit_jmp(stubs[n].retaddr); |
be516ebe |
1474 | } |
1475 | |
81dbbf4c |
1476 | static void inline_readstub(enum stub_type type, int i, u_int addr, |
1477 | const signed char regmap[], int target, int adj, u_int reglist) |
be516ebe |
1478 | { |
d1e4ebd9 |
1479 | int rs=get_reg(regmap,target); |
1480 | int rt=get_reg(regmap,target); |
9de8a0c3 |
1481 | if(rs<0) rs=get_reg_temp(regmap); |
d1e4ebd9 |
1482 | assert(rs>=0); |
1483 | u_int is_dynamic=0; |
1484 | uintptr_t host_addr = 0; |
1485 | void *handler; |
1486 | int cc=get_reg(regmap,CCREG); |
2330734f |
1487 | //if(pcsx_direct_read(type,addr,adj,cc,target?rs:-1,rt)) |
d1e4ebd9 |
1488 | // return; |
1489 | handler = get_direct_memhandler(mem_rtab, addr, type, &host_addr); |
1490 | if (handler == NULL) { |
cf95b4f0 |
1491 | if(rt<0||dops[i].rt1==0) |
d1e4ebd9 |
1492 | return; |
37387d8b |
1493 | if (addr != host_addr) |
1494 | emit_movimm_from64(addr, rs, host_addr, rs); |
d1e4ebd9 |
1495 | switch(type) { |
1496 | case LOADB_STUB: emit_movsbl_indexed(0,rs,rt); break; |
1497 | case LOADBU_STUB: emit_movzbl_indexed(0,rs,rt); break; |
1498 | case LOADH_STUB: emit_movswl_indexed(0,rs,rt); break; |
1499 | case LOADHU_STUB: emit_movzwl_indexed(0,rs,rt); break; |
1500 | case LOADW_STUB: emit_readword_indexed(0,rs,rt); break; |
1501 | default: assert(0); |
1502 | } |
1503 | return; |
1504 | } |
37387d8b |
1505 | is_dynamic = pcsxmem_is_handler_dynamic(addr); |
1506 | if (is_dynamic) { |
d1e4ebd9 |
1507 | if(type==LOADB_STUB||type==LOADBU_STUB) |
1508 | handler=jump_handler_read8; |
1509 | if(type==LOADH_STUB||type==LOADHU_STUB) |
1510 | handler=jump_handler_read16; |
1511 | if(type==LOADW_STUB) |
1512 | handler=jump_handler_read32; |
1513 | } |
1514 | |
1515 | // call a memhandler |
cf95b4f0 |
1516 | if(rt>=0&&dops[i].rt1!=0) |
d1e4ebd9 |
1517 | reglist&=~(1<<rt); |
1518 | save_regs(reglist); |
1519 | if(target==0) |
1520 | emit_movimm(addr,0); |
1521 | else if(rs!=0) |
1522 | emit_mov(rs,0); |
1523 | if(cc<0) |
1524 | emit_loadreg(CCREG,2); |
2330734f |
1525 | emit_addimm(cc<0?2:cc,adj,2); |
3968e69e |
1526 | if(is_dynamic) { |
1527 | uintptr_t l1 = ((uintptr_t *)mem_rtab)[addr>>12] << 1; |
aaece508 |
1528 | intptr_t offset = (l1 & ~0xfffl) - ((intptr_t)out & ~0xfffl); |
1529 | if (-4294967296l <= offset && offset < 4294967296l) { |
1530 | emit_adrp((void *)l1, 1); |
1531 | emit_addimm64(1, l1 & 0xfff, 1); |
1532 | } |
1533 | else |
1534 | emit_movimm64(l1, 1); |
3968e69e |
1535 | } |
d1e4ebd9 |
1536 | else |
2a014d73 |
1537 | emit_far_call(do_memhandler_pre); |
d1e4ebd9 |
1538 | |
2a014d73 |
1539 | emit_far_call(handler); |
d1e4ebd9 |
1540 | |
1541 | // (no cycle reload after read) |
cf95b4f0 |
1542 | if(rt>=0&&dops[i].rt1!=0) |
d1e4ebd9 |
1543 | loadstore_extend(type, 0, rt); |
1544 | restore_regs(reglist); |
be516ebe |
1545 | } |
1546 | |
1547 | static void do_writestub(int n) |
1548 | { |
1549 | assem_debug("do_writestub %x\n",start+stubs[n].a*4); |
d1e4ebd9 |
1550 | set_jump_target(stubs[n].addr, out); |
1551 | enum stub_type type=stubs[n].type; |
1552 | int i=stubs[n].a; |
1553 | int rs=stubs[n].b; |
1554 | struct regstat *i_regs=(struct regstat *)stubs[n].c; |
1555 | u_int reglist=stubs[n].e; |
1556 | signed char *i_regmap=i_regs->regmap; |
1557 | int rt,r; |
cf95b4f0 |
1558 | if(dops[i].itype==C1LS||dops[i].itype==C2LS) { |
d1e4ebd9 |
1559 | rt=get_reg(i_regmap,r=FTEMP); |
1560 | }else{ |
cf95b4f0 |
1561 | rt=get_reg(i_regmap,r=dops[i].rs2); |
d1e4ebd9 |
1562 | } |
1563 | assert(rs>=0); |
1564 | assert(rt>=0); |
1565 | int rtmp,temp=-1,temp2,regs_saved=0; |
1566 | void *restore_jump = NULL, *handler_jump = NULL; |
1567 | int reglist2=reglist|(1<<rs)|(1<<rt); |
1568 | for (rtmp = 0; rtmp < HOST_CCREG; rtmp++) { |
1569 | if (rtmp != EXCLUDE_REG && ((1 << rtmp) & reglist) == 0) { |
1570 | temp = rtmp; |
1571 | break; |
1572 | } |
1573 | } |
1574 | if(temp==-1) { |
1575 | save_regs(reglist); |
1576 | regs_saved=1; |
1577 | for(rtmp=0;rtmp<=3;rtmp++) |
1578 | if(rtmp!=rs&&rtmp!=rt) |
1579 | {temp=rtmp;break;} |
1580 | } |
1581 | if((regs_saved||(reglist2&8)==0)&&temp!=3&&rs!=3&&rt!=3) |
1582 | temp2=3; |
1583 | else { |
1584 | host_tempreg_acquire(); |
1585 | temp2=HOST_TEMPREG; |
1586 | } |
1587 | emit_readdword(&mem_wtab,temp); |
1588 | emit_shrimm(rs,12,temp2); |
1589 | emit_readdword_dualindexedx8(temp,temp2,temp2); |
1590 | emit_adds64(temp2,temp2,temp2); |
1591 | handler_jump=out; |
1592 | emit_jc(0); |
1593 | switch(type) { |
1594 | case STOREB_STUB: emit_strb_dualindexed(temp2,rs,rt); break; |
1595 | case STOREH_STUB: emit_strh_dualindexed(temp2,rs,rt); break; |
1596 | case STOREW_STUB: emit_str_dualindexed(temp2,rs,rt); break; |
1597 | default: assert(0); |
1598 | } |
1599 | if(regs_saved) { |
1600 | restore_jump=out; |
1601 | emit_jmp(0); // jump to reg restore |
1602 | } |
1603 | else |
1604 | emit_jmp(stubs[n].retaddr); // return address (invcode check) |
1605 | set_jump_target(handler_jump, out); |
1606 | |
d1e4ebd9 |
1607 | if(!regs_saved) |
1608 | save_regs(reglist); |
1609 | void *handler=NULL; |
1610 | switch(type) { |
1611 | case STOREB_STUB: handler=jump_handler_write8; break; |
1612 | case STOREH_STUB: handler=jump_handler_write16; break; |
1613 | case STOREW_STUB: handler=jump_handler_write32; break; |
3968e69e |
1614 | default: assert(0); |
d1e4ebd9 |
1615 | } |
1616 | assert(handler); |
1617 | pass_args(rs,rt); |
1618 | if(temp2!=3) { |
1619 | emit_mov64(temp2,3); |
1620 | host_tempreg_release(); |
1621 | } |
1622 | int cc=get_reg(i_regmap,CCREG); |
1623 | if(cc<0) |
1624 | emit_loadreg(CCREG,2); |
2330734f |
1625 | emit_addimm(cc<0?2:cc,(int)stubs[n].d,2); |
d1e4ebd9 |
1626 | // returns new cycle_count |
2a014d73 |
1627 | emit_far_call(handler); |
2330734f |
1628 | emit_addimm(0,-(int)stubs[n].d,cc<0?2:cc); |
d1e4ebd9 |
1629 | if(cc<0) |
1630 | emit_storereg(CCREG,2); |
1631 | if(restore_jump) |
1632 | set_jump_target(restore_jump, out); |
1633 | restore_regs(reglist); |
1634 | emit_jmp(stubs[n].retaddr); |
be516ebe |
1635 | } |
1636 | |
81dbbf4c |
1637 | static void inline_writestub(enum stub_type type, int i, u_int addr, |
1638 | const signed char regmap[], int target, int adj, u_int reglist) |
be516ebe |
1639 | { |
9de8a0c3 |
1640 | int rs = get_reg_temp(regmap); |
687b4580 |
1641 | int rt = get_reg(regmap,target); |
1642 | assert(rs >= 0); |
1643 | assert(rt >= 0); |
1644 | uintptr_t host_addr = 0; |
1645 | void *handler = get_direct_memhandler(mem_wtab, addr, type, &host_addr); |
1646 | if (handler == NULL) { |
37387d8b |
1647 | if (addr != host_addr) |
1648 | emit_movimm_from64(addr, rs, host_addr, rs); |
d1e4ebd9 |
1649 | switch (type) { |
687b4580 |
1650 | case STOREB_STUB: emit_writebyte_indexed(rt, 0, rs); break; |
1651 | case STOREH_STUB: emit_writehword_indexed(rt, 0, rs); break; |
1652 | case STOREW_STUB: emit_writeword_indexed(rt, 0, rs); break; |
1653 | default: assert(0); |
1654 | } |
1655 | return; |
1656 | } |
1657 | |
1658 | // call a memhandler |
1659 | save_regs(reglist); |
687b4580 |
1660 | emit_writeword(rs, &address); // some handlers still need it |
d1e4ebd9 |
1661 | loadstore_extend(type, rt, 0); |
1662 | int cc, cc_use; |
1663 | cc = cc_use = get_reg(regmap, CCREG); |
1664 | if (cc < 0) |
1665 | emit_loadreg(CCREG, (cc_use = 2)); |
2330734f |
1666 | emit_addimm(cc_use, adj, 2); |
d1e4ebd9 |
1667 | |
2a014d73 |
1668 | emit_far_call(do_memhandler_pre); |
1669 | emit_far_call(handler); |
1670 | emit_far_call(do_memhandler_post); |
2330734f |
1671 | emit_addimm(0, -adj, cc_use); |
d1e4ebd9 |
1672 | if (cc < 0) |
1673 | emit_storereg(CCREG, cc_use); |
687b4580 |
1674 | restore_regs(reglist); |
be516ebe |
1675 | } |
1676 | |
3968e69e |
1677 | /* Special assem */ |
1678 | |
81dbbf4c |
1679 | static void c2op_prologue(u_int op, int i, const struct regstat *i_regs, u_int reglist) |
3968e69e |
1680 | { |
1681 | save_load_regs_all(1, reglist); |
32631e6a |
1682 | cop2_do_stall_check(op, i, i_regs, 0); |
3968e69e |
1683 | #ifdef PCNT |
1684 | emit_movimm(op, 0); |
2a014d73 |
1685 | emit_far_call(pcnt_gte_start); |
3968e69e |
1686 | #endif |
1687 | // pointer to cop2 regs |
1688 | emit_addimm64(FP, (u_char *)&psxRegs.CP2D.r[0] - (u_char *)&dynarec_local, 0); |
1689 | } |
1690 | |
1691 | static void c2op_epilogue(u_int op,u_int reglist) |
1692 | { |
1693 | #ifdef PCNT |
1694 | emit_movimm(op, 0); |
2a014d73 |
1695 | emit_far_call(pcnt_gte_end); |
3968e69e |
1696 | #endif |
1697 | save_load_regs_all(0, reglist); |
be516ebe |
1698 | } |
1699 | |
81dbbf4c |
1700 | static void c2op_assemble(int i, const struct regstat *i_regs) |
be516ebe |
1701 | { |
3968e69e |
1702 | u_int c2op=source[i]&0x3f; |
1703 | u_int hr,reglist_full=0,reglist; |
1704 | int need_flags,need_ir; |
1705 | for(hr=0;hr<HOST_REGS;hr++) { |
1706 | if(i_regs->regmap[hr]>=0) reglist_full|=1<<hr; |
1707 | } |
1708 | reglist=reglist_full&CALLER_SAVE_REGS; |
1709 | |
1710 | if (gte_handlers[c2op]!=NULL) { |
1711 | need_flags=!(gte_unneeded[i+1]>>63); // +1 because of how liveness detection works |
1712 | need_ir=(gte_unneeded[i+1]&0xe00)!=0xe00; |
1713 | assem_debug("gte op %08x, unneeded %016lx, need_flags %d, need_ir %d\n", |
1714 | source[i],gte_unneeded[i+1],need_flags,need_ir); |
d62c125a |
1715 | if(HACK_ENABLED(NDHACK_GTE_NO_FLAGS)) |
3968e69e |
1716 | need_flags=0; |
1717 | //int shift = (source[i] >> 19) & 1; |
1718 | //int lm = (source[i] >> 10) & 1; |
1719 | switch(c2op) { |
1720 | default: |
1721 | (void)need_ir; |
81dbbf4c |
1722 | c2op_prologue(c2op, i, i_regs, reglist); |
3968e69e |
1723 | emit_movimm(source[i],1); // opcode |
1724 | emit_writeword(1,&psxRegs.code); |
2a014d73 |
1725 | emit_far_call(need_flags?gte_handlers[c2op]:gte_handlers_nf[c2op]); |
3968e69e |
1726 | break; |
1727 | } |
1728 | c2op_epilogue(c2op,reglist); |
1729 | } |
1730 | } |
1731 | |
1732 | static void c2op_ctc2_31_assemble(signed char sl, signed char temp) |
1733 | { |
1734 | //value = value & 0x7ffff000; |
1735 | //if (value & 0x7f87e000) value |= 0x80000000; |
1736 | emit_andimm(sl, 0x7fffe000, temp); |
1737 | emit_testimm(temp, 0xff87ffff); |
1738 | emit_andimm(sl, 0x7ffff000, temp); |
1739 | host_tempreg_acquire(); |
1740 | emit_orimm(temp, 0x80000000, HOST_TEMPREG); |
1741 | emit_cmovne_reg(HOST_TEMPREG, temp); |
1742 | host_tempreg_release(); |
1743 | assert(0); // testing needed |
1744 | } |
1745 | |
1746 | static void do_mfc2_31_one(u_int copr,signed char temp) |
1747 | { |
1748 | emit_readshword(®_cop2d[copr],temp); |
1749 | emit_bicsar_imm(temp,31,temp); |
1750 | emit_cmpimm(temp,0xf80); |
1751 | emit_csinvle_reg(temp,WZR,temp); // if (temp > 0xf80) temp = ~0; |
1752 | emit_andimm(temp,0xf80,temp); |
1753 | } |
1754 | |
1755 | static void c2op_mfc2_29_assemble(signed char tl, signed char temp) |
1756 | { |
1757 | if (temp < 0) { |
1758 | host_tempreg_acquire(); |
1759 | temp = HOST_TEMPREG; |
1760 | } |
1761 | do_mfc2_31_one(9,temp); |
1762 | emit_shrimm(temp,7,tl); |
1763 | do_mfc2_31_one(10,temp); |
1764 | emit_orrshr_imm(temp,2,tl); |
1765 | do_mfc2_31_one(11,temp); |
1766 | emit_orrshl_imm(temp,3,tl); |
1767 | emit_writeword(tl,®_cop2d[29]); |
1768 | |
1769 | if (temp == HOST_TEMPREG) |
1770 | host_tempreg_release(); |
be516ebe |
1771 | } |
1772 | |
2330734f |
1773 | static void multdiv_assemble_arm64(int i, const struct regstat *i_regs) |
be516ebe |
1774 | { |
3968e69e |
1775 | // case 0x18: MULT |
1776 | // case 0x19: MULTU |
1777 | // case 0x1A: DIV |
1778 | // case 0x1B: DIVU |
cf95b4f0 |
1779 | if(dops[i].rs1&&dops[i].rs2) |
3968e69e |
1780 | { |
cf95b4f0 |
1781 | switch(dops[i].opcode2) |
3968e69e |
1782 | { |
1783 | case 0x18: // MULT |
1784 | case 0x19: // MULTU |
1785 | { |
cf95b4f0 |
1786 | signed char m1=get_reg(i_regs->regmap,dops[i].rs1); |
1787 | signed char m2=get_reg(i_regs->regmap,dops[i].rs2); |
3968e69e |
1788 | signed char hi=get_reg(i_regs->regmap,HIREG); |
1789 | signed char lo=get_reg(i_regs->regmap,LOREG); |
1790 | assert(m1>=0); |
1791 | assert(m2>=0); |
1792 | assert(hi>=0); |
1793 | assert(lo>=0); |
1794 | |
cf95b4f0 |
1795 | if(dops[i].opcode2==0x18) // MULT |
3968e69e |
1796 | emit_smull(m1,m2,hi); |
1797 | else // MULTU |
1798 | emit_umull(m1,m2,hi); |
1799 | |
1800 | emit_mov(hi,lo); |
1801 | emit_shrimm64(hi,32,hi); |
1802 | break; |
1803 | } |
1804 | case 0x1A: // DIV |
1805 | case 0x1B: // DIVU |
1806 | { |
cf95b4f0 |
1807 | signed char numerator=get_reg(i_regs->regmap,dops[i].rs1); |
1808 | signed char denominator=get_reg(i_regs->regmap,dops[i].rs2); |
3968e69e |
1809 | signed char quotient=get_reg(i_regs->regmap,LOREG); |
1810 | signed char remainder=get_reg(i_regs->regmap,HIREG); |
1811 | assert(numerator>=0); |
1812 | assert(denominator>=0); |
1813 | assert(quotient>=0); |
1814 | assert(remainder>=0); |
1815 | |
cf95b4f0 |
1816 | if (dops[i].opcode2 == 0x1A) // DIV |
3968e69e |
1817 | emit_sdiv(numerator,denominator,quotient); |
1818 | else // DIVU |
1819 | emit_udiv(numerator,denominator,quotient); |
1820 | emit_msub(quotient,denominator,numerator,remainder); |
1821 | |
1822 | // div 0 quotient (remainder is already correct) |
1823 | host_tempreg_acquire(); |
cf95b4f0 |
1824 | if (dops[i].opcode2 == 0x1A) // DIV |
3968e69e |
1825 | emit_sub_asrimm(0,numerator,31,HOST_TEMPREG); |
1826 | else |
1827 | emit_movimm(~0,HOST_TEMPREG); |
1828 | emit_test(denominator,denominator); |
1829 | emit_cmoveq_reg(HOST_TEMPREG,quotient); |
1830 | host_tempreg_release(); |
1831 | break; |
1832 | } |
1833 | default: |
1834 | assert(0); |
1835 | } |
1836 | } |
1837 | else |
1838 | { |
1839 | signed char hr=get_reg(i_regs->regmap,HIREG); |
1840 | signed char lr=get_reg(i_regs->regmap,LOREG); |
cf95b4f0 |
1841 | if ((dops[i].opcode2==0x1A || dops[i].opcode2==0x1B) && dops[i].rs2==0) // div 0 |
3968e69e |
1842 | { |
cf95b4f0 |
1843 | if (dops[i].rs1) { |
1844 | signed char numerator = get_reg(i_regs->regmap, dops[i].rs1); |
3968e69e |
1845 | assert(numerator >= 0); |
1846 | if (hr >= 0) |
1847 | emit_mov(numerator,hr); |
1848 | if (lr >= 0) { |
cf95b4f0 |
1849 | if (dops[i].opcode2 == 0x1A) // DIV |
3968e69e |
1850 | emit_sub_asrimm(0,numerator,31,lr); |
1851 | else |
1852 | emit_movimm(~0,lr); |
1853 | } |
1854 | } |
1855 | else { |
1856 | if (hr >= 0) emit_zeroreg(hr); |
1857 | if (lr >= 0) emit_movimm(~0,lr); |
1858 | } |
1859 | } |
1860 | else |
1861 | { |
1862 | // Multiply by zero is zero. |
1863 | if (hr >= 0) emit_zeroreg(hr); |
1864 | if (lr >= 0) emit_zeroreg(lr); |
1865 | } |
1866 | } |
be516ebe |
1867 | } |
1868 | #define multdiv_assemble multdiv_assemble_arm64 |
1869 | |
d1e4ebd9 |
1870 | static void do_jump_vaddr(u_int rs) |
1871 | { |
1872 | if (rs != 0) |
1873 | emit_mov(rs, 0); |
104df9d3 |
1874 | emit_far_call(ndrc_get_addr_ht); |
d1e4ebd9 |
1875 | emit_jmpreg(0); |
1876 | } |
1877 | |
be516ebe |
1878 | static void do_preload_rhash(u_int r) { |
1879 | // Don't need this for ARM. On x86, this puts the value 0xf8 into the |
1880 | // register. On ARM the hash can be done with a single instruction (below) |
1881 | } |
1882 | |
1883 | static void do_preload_rhtbl(u_int ht) { |
d1e4ebd9 |
1884 | emit_addimm64(FP, (u_char *)&mini_ht - (u_char *)&dynarec_local, ht); |
be516ebe |
1885 | } |
1886 | |
1887 | static void do_rhash(u_int rs,u_int rh) { |
1888 | emit_andimm(rs, 0xf8, rh); |
1889 | } |
1890 | |
d1e4ebd9 |
1891 | static void do_miniht_load(int ht, u_int rh) { |
1892 | emit_add64(ht, rh, ht); |
1893 | emit_ldst(0, 0, rh, ht, 0); |
be516ebe |
1894 | } |
1895 | |
d1e4ebd9 |
1896 | static void do_miniht_jump(u_int rs, u_int rh, u_int ht) { |
1897 | emit_cmp(rh, rs); |
1898 | void *jaddr = out; |
1899 | emit_jeq(0); |
1900 | do_jump_vaddr(rs); |
1901 | |
1902 | set_jump_target(jaddr, out); |
1903 | assem_debug("ldr %s,[%s,#8]\n",regname64[ht], regname64[ht]); |
1904 | output_w32(0xf9400000 | imm12_rn_rd(8 >> 3, ht, ht)); |
1905 | emit_jmpreg(ht); |
be516ebe |
1906 | } |
1907 | |
d1e4ebd9 |
1908 | // parsed by set_jump_target? |
be516ebe |
1909 | static void do_miniht_insert(u_int return_address,u_int rt,int temp) { |
d1e4ebd9 |
1910 | emit_movz_lsl16((return_address>>16)&0xffff,rt); |
1911 | emit_movk(return_address&0xffff,rt); |
1912 | add_to_linker(out,return_address,1); |
1913 | emit_adr(out,temp); |
1914 | emit_writedword(temp,&mini_ht[(return_address&0xFF)>>3][1]); |
1915 | emit_writeword(rt,&mini_ht[(return_address&0xFF)>>3][0]); |
be516ebe |
1916 | } |
1917 | |
d9e2b173 |
1918 | static unused void clear_cache_arm64(char *start, char *end) |
be516ebe |
1919 | { |
919981d0 |
1920 | // Don't rely on GCC's __clear_cache implementation, as it caches |
1921 | // icache/dcache cache line sizes, that can vary between cores on |
1922 | // big.LITTLE architectures. |
1923 | uint64_t addr, ctr_el0; |
1924 | static size_t icache_line_size = 0xffff, dcache_line_size = 0xffff; |
1925 | size_t isize, dsize; |
1926 | |
1927 | __asm__ volatile("mrs %0, ctr_el0" : "=r"(ctr_el0)); |
1928 | isize = 4 << ((ctr_el0 >> 0) & 0xf); |
1929 | dsize = 4 << ((ctr_el0 >> 16) & 0xf); |
1930 | |
1931 | // use the global minimum cache line size |
1932 | icache_line_size = isize = icache_line_size < isize ? icache_line_size : isize; |
1933 | dcache_line_size = dsize = dcache_line_size < dsize ? dcache_line_size : dsize; |
1934 | |
1935 | /* If CTR_EL0.IDC is enabled, Data cache clean to the Point of Unification is |
1936 | not required for instruction to data coherence. */ |
1937 | if ((ctr_el0 & (1 << 28)) == 0x0) { |
1938 | addr = (uint64_t)start & ~(uint64_t)(dsize - 1); |
1939 | for (; addr < (uint64_t)end; addr += dsize) |
1940 | // use "civac" instead of "cvau", as this is the suggested workaround for |
1941 | // Cortex-A53 errata 819472, 826319, 827319 and 824069. |
1942 | __asm__ volatile("dc civac, %0" : : "r"(addr) : "memory"); |
be516ebe |
1943 | } |
919981d0 |
1944 | __asm__ volatile("dsb ish" : : : "memory"); |
be516ebe |
1945 | |
919981d0 |
1946 | /* If CTR_EL0.DIC is enabled, Instruction cache cleaning to the Point of |
1947 | Unification is not required for instruction to data coherence. */ |
1948 | if ((ctr_el0 & (1 << 29)) == 0x0) { |
1949 | addr = (uint64_t)start & ~(uint64_t)(isize - 1); |
1950 | for (; addr < (uint64_t)end; addr += isize) |
1951 | __asm__ volatile("ic ivau, %0" : : "r"(addr) : "memory"); |
1952 | |
1953 | __asm__ volatile("dsb ish" : : : "memory"); |
be516ebe |
1954 | } |
919981d0 |
1955 | |
1956 | __asm__ volatile("isb" : : : "memory"); |
be516ebe |
1957 | } |
1958 | |
1959 | // CPU-architecture-specific initialization |
2a014d73 |
1960 | static void arch_init(void) |
1961 | { |
1962 | uintptr_t diff = (u_char *)&ndrc->tramp.f - (u_char *)&ndrc->tramp.ops; |
d9e2b173 |
1963 | struct tramp_insns *ops = NDRC_WRITE_OFFSET(ndrc->tramp.ops); |
2a014d73 |
1964 | size_t i; |
1965 | assert(!(diff & 3)); |
d9e2b173 |
1966 | start_tcache_write(ops, (u_char *)ops + sizeof(ndrc->tramp.ops)); |
2a014d73 |
1967 | for (i = 0; i < ARRAY_SIZE(ndrc->tramp.ops); i++) { |
d9e2b173 |
1968 | ops[i].ldr = 0x58000000 | imm19_rt(diff >> 2, 17); // ldr x17, [=val] |
1969 | ops[i].br = 0xd61f0000 | rm_rn_rd(0, 17, 0); // br x17 |
2a014d73 |
1970 | } |
1971 | end_tcache_write(ops, (u_char *)ops + sizeof(ndrc->tramp.ops)); |
be516ebe |
1972 | } |
1973 | |
1974 | // vim:shiftwidth=2:expandtab |