| 1 | /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
| 2 | * Mupen64plus/PCSX - assem_arm64.c * |
| 3 | * Copyright (C) 2009-2011 Ari64 * |
| 4 | * Copyright (C) 2009-2018 Gillou68310 * |
| 5 | * Copyright (C) 2021 notaz * |
| 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 | |
| 23 | #include "pcnt.h" |
| 24 | #include "arm_features.h" |
| 25 | |
| 26 | /* Linker */ |
| 27 | static void set_jump_target(void *addr, void *target) |
| 28 | { |
| 29 | u_int *ptr = NDRC_WRITE_OFFSET(addr); |
| 30 | intptr_t offset = (u_char *)target - (u_char *)addr; |
| 31 | |
| 32 | if ((*ptr&0xFC000000) == 0x14000000) { // b |
| 33 | assert(offset>=-134217728LL&&offset<134217728LL); |
| 34 | *ptr=(*ptr&0xFC000000)|((offset>>2)&0x3ffffff); |
| 35 | } |
| 36 | else if ((*ptr&0xff000000) == 0x54000000 // b.cond |
| 37 | || (*ptr&0x7e000000) == 0x34000000) { // cbz/cbnz |
| 38 | // Conditional branch are limited to +/- 1MB |
| 39 | // block max size is 256k so branching beyond the +/- 1MB limit |
| 40 | // should only happen when jumping to an already compiled block (see add_jump_out) |
| 41 | // a workaround would be to do a trampoline jump via a stub at the end of the block |
| 42 | assert(-1048576 <= offset && offset < 1048576); |
| 43 | *ptr=(*ptr&0xFF00001F)|(((offset>>2)&0x7ffff)<<5); |
| 44 | } |
| 45 | else if((*ptr&0x9f000000)==0x10000000) { // adr |
| 46 | // generated by do_miniht_insert |
| 47 | assert(offset>=-1048576LL&&offset<1048576LL); |
| 48 | *ptr=(*ptr&0x9F00001F)|(offset&0x3)<<29|((offset>>2)&0x7ffff)<<5; |
| 49 | } |
| 50 | else |
| 51 | abort(); // should not happen |
| 52 | } |
| 53 | |
| 54 | // from a pointer to external jump stub (which was produced by emit_extjump2) |
| 55 | // find where the jumping insn is |
| 56 | static void *find_extjump_insn(void *stub) |
| 57 | { |
| 58 | int *ptr = (int *)stub + 2; |
| 59 | assert((*ptr&0x9f000000) == 0x10000000); // adr |
| 60 | int offset = (((signed int)(*ptr<<8)>>13)<<2)|((*ptr>>29)&0x3); |
| 61 | return ptr + offset / 4; |
| 62 | } |
| 63 | |
| 64 | #if 0 |
| 65 | // find where external branch is liked to using addr of it's stub: |
| 66 | // get address that the stub loads (dyna_linker arg1), |
| 67 | // treat it as a pointer to branch insn, |
| 68 | // return addr where that branch jumps to |
| 69 | static void *get_pointer(void *stub) |
| 70 | { |
| 71 | int *i_ptr = find_extjump_insn(stub); |
| 72 | if ((*i_ptr&0xfc000000) == 0x14000000) // b |
| 73 | return i_ptr + ((signed int)(*i_ptr<<6)>>6); |
| 74 | if ((*i_ptr&0xff000000) == 0x54000000 // b.cond |
| 75 | || (*i_ptr&0x7e000000) == 0x34000000) // cbz/cbnz |
| 76 | return i_ptr + ((signed int)(*i_ptr<<8)>>13); |
| 77 | assert(0); |
| 78 | return NULL; |
| 79 | } |
| 80 | #endif |
| 81 | |
| 82 | // Allocate a specific ARM register. |
| 83 | static void alloc_arm_reg(struct regstat *cur,int i,signed char reg,int hr) |
| 84 | { |
| 85 | int n; |
| 86 | int dirty=0; |
| 87 | |
| 88 | // see if it's already allocated (and dealloc it) |
| 89 | for(n=0;n<HOST_REGS;n++) |
| 90 | { |
| 91 | if(n!=EXCLUDE_REG&&cur->regmap[n]==reg) { |
| 92 | dirty=(cur->dirty>>n)&1; |
| 93 | cur->regmap[n]=-1; |
| 94 | } |
| 95 | } |
| 96 | |
| 97 | cur->regmap[hr]=reg; |
| 98 | cur->dirty&=~(1<<hr); |
| 99 | cur->dirty|=dirty<<hr; |
| 100 | cur->isconst&=~(1<<hr); |
| 101 | } |
| 102 | |
| 103 | // Alloc cycle count into dedicated register |
| 104 | static void alloc_cc(struct regstat *cur,int i) |
| 105 | { |
| 106 | alloc_arm_reg(cur,i,CCREG,HOST_CCREG); |
| 107 | } |
| 108 | |
| 109 | /* Special alloc */ |
| 110 | |
| 111 | |
| 112 | /* Assembler */ |
| 113 | |
| 114 | static unused const char *regname[32] = { |
| 115 | "w0", "w1", "w2", "w3", "w4", "w5", "w6", "w7", |
| 116 | "w8", "w9", "w10", "w11", "w12", "w13", "w14", "w15", |
| 117 | "ip0", "ip1", "w18", "w19", "w20", "w21", "w22", "w23", |
| 118 | "w24", "w25", "w26", "w27", "w28", "wfp", "wlr", "wsp" |
| 119 | }; |
| 120 | |
| 121 | static unused const char *regname64[32] = { |
| 122 | "x0", "x1", "x2", "x3", "x4", "x5", "x6", "x7", |
| 123 | "x8", "x9", "x10", "x11", "x12", "x13", "x14", "x15", |
| 124 | "ip0", "ip1", "x18", "x19", "x20", "x21", "x22", "x23", |
| 125 | "x24", "x25", "x26", "x27", "x28", "fp", "lr", "sp" |
| 126 | }; |
| 127 | |
| 128 | enum { |
| 129 | COND_EQ, COND_NE, COND_CS, COND_CC, COND_MI, COND_PL, COND_VS, COND_VC, |
| 130 | COND_HI, COND_LS, COND_GE, COND_LT, COND_GT, COND_LE, COND_AW, COND_NV |
| 131 | }; |
| 132 | |
| 133 | static unused const char *condname[16] = { |
| 134 | "eq", "ne", "cs", "cc", "mi", "pl", "vs", "vc", |
| 135 | "hi", "ls", "ge", "lt", "gt", "le", "aw", "nv" |
| 136 | }; |
| 137 | |
| 138 | static void output_w32(u_int word) |
| 139 | { |
| 140 | *((u_int *)NDRC_WRITE_OFFSET(out)) = word; |
| 141 | out += 4; |
| 142 | } |
| 143 | |
| 144 | static u_int rn_rd(u_int rn, u_int rd) |
| 145 | { |
| 146 | assert(rn < 31); |
| 147 | assert(rd < 31); |
| 148 | return (rn << 5) | rd; |
| 149 | } |
| 150 | |
| 151 | static u_int rm_rn_rd(u_int rm, u_int rn, u_int rd) |
| 152 | { |
| 153 | assert(rm < 32); |
| 154 | assert(rn < 32); |
| 155 | assert(rd < 32); |
| 156 | return (rm << 16) | (rn << 5) | rd; |
| 157 | } |
| 158 | |
| 159 | static u_int rm_ra_rn_rd(u_int rm, u_int ra, u_int rn, u_int rd) |
| 160 | { |
| 161 | assert(ra < 32); |
| 162 | return rm_rn_rd(rm, rn, rd) | (ra << 10); |
| 163 | } |
| 164 | |
| 165 | static u_int imm7_rt2_rn_rt(u_int imm7, u_int rt2, u_int rn, u_int rt) |
| 166 | { |
| 167 | assert(imm7 < 0x80); |
| 168 | assert(rt2 < 31); |
| 169 | assert(rn < 32); |
| 170 | assert(rt < 31); |
| 171 | return (imm7 << 15) | (rt2 << 10) | (rn << 5) | rt; |
| 172 | } |
| 173 | |
| 174 | static u_int rm_imm6_rn_rd(u_int rm, u_int imm6, u_int rn, u_int rd) |
| 175 | { |
| 176 | assert(imm6 <= 63); |
| 177 | return rm_rn_rd(rm, rn, rd) | (imm6 << 10); |
| 178 | } |
| 179 | |
| 180 | static u_int imm16_rd(u_int imm16, u_int rd) |
| 181 | { |
| 182 | assert(imm16 < 0x10000); |
| 183 | assert(rd < 31); |
| 184 | return (imm16 << 5) | rd; |
| 185 | } |
| 186 | |
| 187 | static u_int imm12_rn_rd(u_int imm12, u_int rn, u_int rd) |
| 188 | { |
| 189 | assert(imm12 < 0x1000); |
| 190 | assert(rn < 32); |
| 191 | assert(rd < 32); |
| 192 | return (imm12 << 10) | (rn << 5) | rd; |
| 193 | } |
| 194 | |
| 195 | static u_int imm9_rn_rt(u_int imm9, u_int rn, u_int rd) |
| 196 | { |
| 197 | assert(imm9 < 0x200); |
| 198 | assert(rn < 31); |
| 199 | assert(rd < 31); |
| 200 | return (imm9 << 12) | (rn << 5) | rd; |
| 201 | } |
| 202 | |
| 203 | static u_int imm19_rt(u_int imm19, u_int rt) |
| 204 | { |
| 205 | assert(imm19 < 0x80000); |
| 206 | assert(rt < 31); |
| 207 | return (imm19 << 5) | rt; |
| 208 | } |
| 209 | |
| 210 | static u_int n_immr_imms_rn_rd(u_int n, u_int immr, u_int imms, u_int rn, u_int rd) |
| 211 | { |
| 212 | assert(n < 2); |
| 213 | assert(immr < 0x40); |
| 214 | assert(imms < 0x40); |
| 215 | assert(rn < 32); |
| 216 | assert(rd < 32); |
| 217 | return (n << 22) | (immr << 16) | (imms << 10) | (rn << 5) | rd; |
| 218 | } |
| 219 | |
| 220 | static u_int genjmp(const u_char *addr) |
| 221 | { |
| 222 | intptr_t offset = addr - out; |
| 223 | if ((uintptr_t)addr < 3) return 0; // a branch that will be patched later |
| 224 | if (offset < -134217728 || offset > 134217727) { |
| 225 | SysPrintf("%s: out of range: %p %lx\n", __func__, addr, offset); |
| 226 | abort(); |
| 227 | return 0; |
| 228 | } |
| 229 | return ((u_int)offset >> 2) & 0x03ffffff; |
| 230 | } |
| 231 | |
| 232 | static u_int genjmpcc(const u_char *addr) |
| 233 | { |
| 234 | intptr_t offset = addr - out; |
| 235 | if ((uintptr_t)addr < 3) return 0; |
| 236 | if (offset < -1048576 || offset > 1048572) { |
| 237 | SysPrintf("%s: out of range: %p %lx\n", __func__, addr, offset); |
| 238 | abort(); |
| 239 | return 0; |
| 240 | } |
| 241 | return ((u_int)offset >> 2) & 0x7ffff; |
| 242 | } |
| 243 | |
| 244 | static uint32_t is_mask(u_int value) |
| 245 | { |
| 246 | return value && ((value + 1) & value) == 0; |
| 247 | } |
| 248 | |
| 249 | // This function returns true if the argument contains a |
| 250 | // non-empty sequence of ones (possibly rotated) with the remainder zero. |
| 251 | static uint32_t is_rotated_mask(u_int value) |
| 252 | { |
| 253 | if (value == 0 || value == ~0) |
| 254 | return 0; |
| 255 | if (is_mask((value - 1) | value)) |
| 256 | return 1; |
| 257 | return is_mask((~value - 1) | ~value); |
| 258 | } |
| 259 | |
| 260 | static void gen_logical_imm(u_int value, u_int *immr, u_int *imms) |
| 261 | { |
| 262 | int lzeros, tzeros, ones; |
| 263 | assert(value != 0); |
| 264 | if (is_mask((value - 1) | value)) { |
| 265 | lzeros = __builtin_clz(value); |
| 266 | tzeros = __builtin_ctz(value); |
| 267 | ones = 32 - lzeros - tzeros; |
| 268 | *immr = (32 - tzeros) & 31; |
| 269 | *imms = ones - 1; |
| 270 | return; |
| 271 | } |
| 272 | value = ~value; |
| 273 | if (is_mask((value - 1) | value)) { |
| 274 | lzeros = __builtin_clz(value); |
| 275 | tzeros = __builtin_ctz(value); |
| 276 | ones = 32 - lzeros - tzeros; |
| 277 | *immr = lzeros; |
| 278 | *imms = 31 - ones; |
| 279 | return; |
| 280 | } |
| 281 | abort(); |
| 282 | } |
| 283 | |
| 284 | static void emit_mov(u_int rs, u_int rt) |
| 285 | { |
| 286 | assem_debug("mov %s,%s\n", regname[rt], regname[rs]); |
| 287 | output_w32(0x2a000000 | rm_rn_rd(rs, WZR, rt)); |
| 288 | } |
| 289 | |
| 290 | static void emit_mov64(u_int rs, u_int rt) |
| 291 | { |
| 292 | assem_debug("mov %s,%s\n", regname64[rt], regname64[rs]); |
| 293 | output_w32(0xaa000000 | rm_rn_rd(rs, WZR, rt)); |
| 294 | } |
| 295 | |
| 296 | static void emit_add(u_int rs1, u_int rs2, u_int rt) |
| 297 | { |
| 298 | assem_debug("add %s,%s,%s\n", regname[rt], regname[rs1], regname[rs2]); |
| 299 | output_w32(0x0b000000 | rm_rn_rd(rs2, rs1, rt)); |
| 300 | } |
| 301 | |
| 302 | static void emit_adds(u_int rs1, u_int rs2, u_int rt) |
| 303 | { |
| 304 | assem_debug("adds %s,%s,%s\n", regname[rt], regname[rs1], regname[rs2]); |
| 305 | output_w32(0x2b000000 | rm_rn_rd(rs2, rs1, rt)); |
| 306 | } |
| 307 | |
| 308 | static void emit_add64(u_int rs1, u_int rs2, u_int rt) |
| 309 | { |
| 310 | assem_debug("add %s,%s,%s\n", regname64[rt], regname64[rs1], regname64[rs2]); |
| 311 | output_w32(0x8b000000 | rm_rn_rd(rs2, rs1, rt)); |
| 312 | } |
| 313 | |
| 314 | static void emit_adds64(u_int rs1, u_int rs2, u_int rt) |
| 315 | { |
| 316 | assem_debug("adds %s,%s,%s\n",regname64[rt],regname64[rs1],regname64[rs2]); |
| 317 | output_w32(0xab000000 | rm_rn_rd(rs2, rs1, rt)); |
| 318 | } |
| 319 | #define emit_adds_ptr emit_adds64 |
| 320 | |
| 321 | static void emit_add_lsrimm(u_int rs1, u_int rs2, u_int shift, u_int rt) |
| 322 | { |
| 323 | assem_debug("add %s,%s,%s,lsr #%u\n",regname[rt],regname[rs1],regname[rs2],shift); |
| 324 | output_w32(0x0b400000 | rm_imm6_rn_rd(rs2, shift, rs1, rt)); |
| 325 | } |
| 326 | |
| 327 | static void emit_neg(u_int rs, u_int rt) |
| 328 | { |
| 329 | assem_debug("neg %s,%s\n",regname[rt],regname[rs]); |
| 330 | output_w32(0x4b000000 | rm_rn_rd(rs, WZR, rt)); |
| 331 | } |
| 332 | |
| 333 | static void emit_negs(u_int rs, u_int rt) |
| 334 | { |
| 335 | assem_debug("negs %s,%s\n",regname[rt],regname[rs]); |
| 336 | output_w32(0x6b000000 | rm_rn_rd(rs, WZR, rt)); |
| 337 | } |
| 338 | |
| 339 | static void emit_sub(u_int rs1, u_int rs2, u_int rt) |
| 340 | { |
| 341 | assem_debug("sub %s,%s,%s\n", regname[rt], regname[rs1], regname[rs2]); |
| 342 | output_w32(0x4b000000 | rm_imm6_rn_rd(rs2, 0, rs1, rt)); |
| 343 | } |
| 344 | |
| 345 | static void emit_subs(u_int rs1, u_int rs2, u_int rt) |
| 346 | { |
| 347 | assem_debug("subs %s,%s,%s\n", regname[rt], regname[rs1], regname[rs2]); |
| 348 | output_w32(0x6b000000 | rm_imm6_rn_rd(rs2, 0, rs1, rt)); |
| 349 | } |
| 350 | |
| 351 | static unused void emit_sub_asrimm(u_int rs1, u_int rs2, u_int shift, u_int rt) |
| 352 | { |
| 353 | assem_debug("sub %s,%s,%s,asr #%u\n",regname[rt],regname[rs1],regname[rs2],shift); |
| 354 | output_w32(0x4b800000 | rm_imm6_rn_rd(rs2, shift, rs1, rt)); |
| 355 | } |
| 356 | |
| 357 | static void emit_movz(u_int imm, u_int rt) |
| 358 | { |
| 359 | assem_debug("movz %s,#%#x\n", regname[rt], imm); |
| 360 | output_w32(0x52800000 | imm16_rd(imm, rt)); |
| 361 | } |
| 362 | |
| 363 | static void emit_movz_lsl16(u_int imm, u_int rt) |
| 364 | { |
| 365 | assem_debug("movz %s,#%#x,lsl #16\n", regname[rt], imm); |
| 366 | output_w32(0x52a00000 | imm16_rd(imm, rt)); |
| 367 | } |
| 368 | |
| 369 | static void emit_movn(u_int imm, u_int rt) |
| 370 | { |
| 371 | assem_debug("movn %s,#%#x\n", regname[rt], imm); |
| 372 | output_w32(0x12800000 | imm16_rd(imm, rt)); |
| 373 | } |
| 374 | |
| 375 | static void emit_movn_lsl16(u_int imm,u_int rt) |
| 376 | { |
| 377 | assem_debug("movn %s,#%#x,lsl #16\n", regname[rt], imm); |
| 378 | output_w32(0x12a00000 | imm16_rd(imm, rt)); |
| 379 | } |
| 380 | |
| 381 | static void emit_movk(u_int imm,u_int rt) |
| 382 | { |
| 383 | assem_debug("movk %s,#%#x\n", regname[rt], imm); |
| 384 | output_w32(0x72800000 | imm16_rd(imm, rt)); |
| 385 | } |
| 386 | |
| 387 | static void emit_movk_lsl16(u_int imm,u_int rt) |
| 388 | { |
| 389 | assert(imm<65536); |
| 390 | assem_debug("movk %s,#%#x,lsl #16\n", regname[rt], imm); |
| 391 | output_w32(0x72a00000 | imm16_rd(imm, rt)); |
| 392 | } |
| 393 | |
| 394 | static void emit_zeroreg(u_int rt) |
| 395 | { |
| 396 | emit_movz(0, rt); |
| 397 | } |
| 398 | |
| 399 | static void emit_movimm(u_int imm, u_int rt) |
| 400 | { |
| 401 | if (imm < 65536) |
| 402 | emit_movz(imm, rt); |
| 403 | else if ((~imm) < 65536) |
| 404 | emit_movn(~imm, rt); |
| 405 | else if ((imm&0xffff) == 0) |
| 406 | emit_movz_lsl16(imm >> 16, rt); |
| 407 | else if (((~imm)&0xffff) == 0) |
| 408 | emit_movn_lsl16(~imm >> 16, rt); |
| 409 | else if (is_rotated_mask(imm)) { |
| 410 | u_int immr, imms; |
| 411 | gen_logical_imm(imm, &immr, &imms); |
| 412 | assem_debug("orr %s,wzr,#%#x\n", regname[rt], imm); |
| 413 | output_w32(0x32000000 | n_immr_imms_rn_rd(0, immr, imms, WZR, rt)); |
| 414 | } |
| 415 | else { |
| 416 | emit_movz(imm & 0xffff, rt); |
| 417 | emit_movk_lsl16(imm >> 16, rt); |
| 418 | } |
| 419 | } |
| 420 | |
| 421 | static void emit_movimm64(uint64_t imm, u_int rt) |
| 422 | { |
| 423 | u_int shift, op, imm16, insns = 0; |
| 424 | for (shift = 0; shift < 4; shift++) { |
| 425 | imm16 = (imm >> shift * 16) & 0xffff; |
| 426 | if (!imm16) |
| 427 | continue; |
| 428 | op = insns ? 0xf2800000 : 0xd2800000; |
| 429 | assem_debug("mov%c %s,#%#x", insns ? 'k' : 'z', regname64[rt], imm16); |
| 430 | if (shift) |
| 431 | assem_debug(",lsl #%u", shift * 16); |
| 432 | assem_debug("\n"); |
| 433 | output_w32(op | (shift << 21) | imm16_rd(imm16, rt)); |
| 434 | insns++; |
| 435 | } |
| 436 | if (!insns) { |
| 437 | assem_debug("movz %s,#0\n", regname64[rt]); |
| 438 | output_w32(0xd2800000 | imm16_rd(0, rt)); |
| 439 | } |
| 440 | } |
| 441 | |
| 442 | static void emit_readword(void *addr, u_int rt) |
| 443 | { |
| 444 | uintptr_t offset = (u_char *)addr - (u_char *)&dynarec_local; |
| 445 | if (!(offset & 3) && offset <= 16380) { |
| 446 | assem_debug("ldr %s,[x%d+%#lx]%s\n", regname[rt], FP, offset, fpofs_name(offset)); |
| 447 | output_w32(0xb9400000 | imm12_rn_rd(offset >> 2, FP, rt)); |
| 448 | } |
| 449 | else |
| 450 | abort(); |
| 451 | } |
| 452 | |
| 453 | static void emit_readdword(void *addr, u_int rt) |
| 454 | { |
| 455 | uintptr_t offset = (u_char *)addr - (u_char *)&dynarec_local; |
| 456 | if (!(offset & 7) && offset <= 32760) { |
| 457 | assem_debug("ldr %s,[x%d+%#lx]%s\n", regname64[rt], FP, offset, fpofs_name(offset)); |
| 458 | output_w32(0xf9400000 | imm12_rn_rd(offset >> 3, FP, rt)); |
| 459 | } |
| 460 | else |
| 461 | abort(); |
| 462 | } |
| 463 | #define emit_readptr emit_readdword |
| 464 | |
| 465 | static void emit_readshword(void *addr, u_int rt) |
| 466 | { |
| 467 | uintptr_t offset = (u_char *)addr - (u_char *)&dynarec_local; |
| 468 | if (!(offset & 1) && offset <= 8190) { |
| 469 | assem_debug("ldrsh %s,[x%d+%#lx]\n", regname[rt], FP, offset); |
| 470 | output_w32(0x79c00000 | imm12_rn_rd(offset >> 1, FP, rt)); |
| 471 | } |
| 472 | else |
| 473 | assert(0); |
| 474 | } |
| 475 | |
| 476 | static void emit_loadreg(u_int r, u_int hr) |
| 477 | { |
| 478 | int is64 = 0; |
| 479 | if (r == 0) |
| 480 | emit_zeroreg(hr); |
| 481 | else { |
| 482 | void *addr; |
| 483 | switch (r) { |
| 484 | //case HIREG: addr = &hi; break; |
| 485 | //case LOREG: addr = &lo; break; |
| 486 | case CCREG: addr = &cycle_count; break; |
| 487 | case CSREG: addr = &psxRegs.CP0.n.SR; break; |
| 488 | case INVCP: addr = &invc_ptr; is64 = 1; break; |
| 489 | case ROREG: addr = &ram_offset; is64 = 1; break; |
| 490 | default: |
| 491 | assert(r < 34); |
| 492 | addr = &psxRegs.GPR.r[r]; |
| 493 | break; |
| 494 | } |
| 495 | if (is64) |
| 496 | emit_readdword(addr, hr); |
| 497 | else |
| 498 | emit_readword(addr, hr); |
| 499 | } |
| 500 | } |
| 501 | |
| 502 | static void emit_writeword(u_int rt, void *addr) |
| 503 | { |
| 504 | uintptr_t offset = (u_char *)addr - (u_char *)&dynarec_local; |
| 505 | if (!(offset & 3) && offset <= 16380) { |
| 506 | assem_debug("str %s,[x%d+%#lx]%s\n", regname[rt], FP, offset, fpofs_name(offset)); |
| 507 | output_w32(0xb9000000 | imm12_rn_rd(offset >> 2, FP, rt)); |
| 508 | } |
| 509 | else |
| 510 | assert(0); |
| 511 | } |
| 512 | |
| 513 | static void emit_writedword(u_int rt, void *addr) |
| 514 | { |
| 515 | uintptr_t offset = (u_char *)addr - (u_char *)&dynarec_local; |
| 516 | if (!(offset & 7) && offset <= 32760) { |
| 517 | assem_debug("str %s,[x%d+%#lx]%s\n", regname64[rt], FP, offset, fpofs_name(offset)); |
| 518 | output_w32(0xf9000000 | imm12_rn_rd(offset >> 3, FP, rt)); |
| 519 | } |
| 520 | else |
| 521 | abort(); |
| 522 | } |
| 523 | |
| 524 | static void emit_storereg(u_int r, u_int hr) |
| 525 | { |
| 526 | assert(r < 64); |
| 527 | void *addr = &psxRegs.GPR.r[r]; |
| 528 | switch (r) { |
| 529 | //case HIREG: addr = &hi; break; |
| 530 | //case LOREG: addr = &lo; break; |
| 531 | case CCREG: addr = &cycle_count; break; |
| 532 | default: assert(r < 34); break; |
| 533 | } |
| 534 | emit_writeword(hr, addr); |
| 535 | } |
| 536 | |
| 537 | static void emit_test(u_int rs, u_int rt) |
| 538 | { |
| 539 | assem_debug("tst %s,%s\n", regname[rs], regname[rt]); |
| 540 | output_w32(0x6a000000 | rm_rn_rd(rt, rs, WZR)); |
| 541 | } |
| 542 | |
| 543 | static void emit_testimm(u_int rs, u_int imm) |
| 544 | { |
| 545 | u_int immr, imms; |
| 546 | assem_debug("tst %s,#%#x\n", regname[rs], imm); |
| 547 | assert(is_rotated_mask(imm)); // good enough for PCSX |
| 548 | gen_logical_imm(imm, &immr, &imms); |
| 549 | output_w32(0x72000000 | n_immr_imms_rn_rd(0, immr, imms, rs, WZR)); |
| 550 | } |
| 551 | |
| 552 | static void emit_not(u_int rs,u_int rt) |
| 553 | { |
| 554 | assem_debug("mvn %s,%s\n",regname[rt],regname[rs]); |
| 555 | output_w32(0x2a200000 | rm_rn_rd(rs, WZR, rt)); |
| 556 | } |
| 557 | |
| 558 | static void emit_and(u_int rs1,u_int rs2,u_int rt) |
| 559 | { |
| 560 | assem_debug("and %s,%s,%s\n",regname[rt],regname[rs1],regname[rs2]); |
| 561 | output_w32(0x0a000000 | rm_rn_rd(rs2, rs1, rt)); |
| 562 | } |
| 563 | |
| 564 | static void emit_or(u_int rs1,u_int rs2,u_int rt) |
| 565 | { |
| 566 | assem_debug("orr %s,%s,%s\n",regname[rt],regname[rs1],regname[rs2]); |
| 567 | output_w32(0x2a000000 | rm_rn_rd(rs2, rs1, rt)); |
| 568 | } |
| 569 | |
| 570 | static void emit_bic(u_int rs1,u_int rs2,u_int rt) |
| 571 | { |
| 572 | assem_debug("bic %s,%s,%s\n",regname[rt],regname[rs1],regname[rs2]); |
| 573 | output_w32(0x0a200000 | rm_rn_rd(rs2, rs1, rt)); |
| 574 | } |
| 575 | |
| 576 | static void emit_orrshl_imm(u_int rs,u_int imm,u_int rt) |
| 577 | { |
| 578 | assem_debug("orr %s,%s,%s,lsl #%d\n",regname[rt],regname[rt],regname[rs],imm); |
| 579 | output_w32(0x2a000000 | rm_imm6_rn_rd(rs, imm, rt, rt)); |
| 580 | } |
| 581 | |
| 582 | static void emit_orrshr_imm(u_int rs,u_int imm,u_int rt) |
| 583 | { |
| 584 | assem_debug("orr %s,%s,%s,lsr #%d\n",regname[rt],regname[rt],regname[rs],imm); |
| 585 | output_w32(0x2a400000 | rm_imm6_rn_rd(rs, imm, rt, rt)); |
| 586 | } |
| 587 | |
| 588 | static void emit_orn_asrimm(u_int rs1, u_int rs2, u_int shift, u_int rt) |
| 589 | { |
| 590 | assem_debug("orn %s,%s,%s,asr #%u\n",regname[rt],regname[rs1],regname[rs2],shift); |
| 591 | output_w32(0x2aa00000 | rm_imm6_rn_rd(rs2, shift, rs1, rt)); |
| 592 | } |
| 593 | |
| 594 | static void emit_bicsar_imm(u_int rs,u_int imm,u_int rt) |
| 595 | { |
| 596 | assem_debug("bic %s,%s,%s,asr #%d\n",regname[rt],regname[rt],regname[rs],imm); |
| 597 | output_w32(0x0aa00000 | rm_imm6_rn_rd(rs, imm, rt, rt)); |
| 598 | } |
| 599 | |
| 600 | static void emit_xor(u_int rs1,u_int rs2,u_int rt) |
| 601 | { |
| 602 | assem_debug("eor %s,%s,%s\n",regname[rt],regname[rs1],regname[rs2]); |
| 603 | output_w32(0x4a000000 | rm_rn_rd(rs2, rs1, rt)); |
| 604 | } |
| 605 | |
| 606 | static void emit_xorsar_imm(u_int rs1, u_int rs2, u_int imm, u_int rt) |
| 607 | { |
| 608 | assem_debug("eor %s,%s,%s,asr #%d\n",regname[rt],regname[rs1],regname[rs2],imm); |
| 609 | output_w32(0x4a800000 | rm_imm6_rn_rd(rs2, imm, rs1, rt)); |
| 610 | } |
| 611 | |
| 612 | static void emit_addimm_s(u_int s, u_int is64, u_int rs, uintptr_t imm, u_int rt) |
| 613 | { |
| 614 | unused const char *st = s ? "s" : ""; |
| 615 | s = s ? 0x20000000 : 0; |
| 616 | is64 = is64 ? 0x80000000 : 0; |
| 617 | if (imm < 4096) { |
| 618 | assem_debug("add%s %s,%s,%#lx\n", st, regname[rt], regname[rs], imm); |
| 619 | output_w32(0x11000000 | is64 | s | imm12_rn_rd(imm, rs, rt)); |
| 620 | } |
| 621 | else if (-imm < 4096) { |
| 622 | assem_debug("sub%s %s,%s,%#lx\n", st, regname[rt], regname[rs], -imm); |
| 623 | output_w32(0x51000000 | is64 | s | imm12_rn_rd(-imm, rs, rt)); |
| 624 | } |
| 625 | else if (imm < 16777216 && (!(imm & 0xfff) || !s)) { |
| 626 | assem_debug("add%s %s,%s,#%#lx\n", st, regname[rt], regname[rs], imm&0xfff000); |
| 627 | output_w32(0x11400000 | is64 | s | imm12_rn_rd(imm >> 12, rs, rt)); |
| 628 | if (imm & 0xfff) { |
| 629 | assem_debug("add %s,%s,#%#lx\n", regname[rt], regname[rt], imm&0xfff); |
| 630 | output_w32(0x11000000 | is64 | imm12_rn_rd(imm & 0xfff, rt, rt)); |
| 631 | } |
| 632 | } |
| 633 | else if (-imm < 16777216 && (!(-imm & 0xfff) || !s)) { |
| 634 | assem_debug("sub%s %s,%s,#%#lx\n", st, regname[rt], regname[rs], -imm&0xfff000); |
| 635 | output_w32(0x51400000 | is64 | s | imm12_rn_rd(-imm >> 12, rs, rt)); |
| 636 | if (-imm & 0xfff) { |
| 637 | assem_debug("sub %s,%s,#%#lx\n", regname[rt], regname[rt], -imm&0xfff); |
| 638 | output_w32(0x51000000 | is64 | imm12_rn_rd(-imm & 0xfff, rt, rt)); |
| 639 | } |
| 640 | } |
| 641 | else { |
| 642 | u_int tmp = rt; |
| 643 | assert(!is64); |
| 644 | if (rs == rt) { |
| 645 | host_tempreg_acquire(); |
| 646 | tmp = HOST_TEMPREG; |
| 647 | } |
| 648 | emit_movimm(imm, tmp); |
| 649 | assem_debug("add%s %s,%s,%s\n", st, regname[rt], regname[rs], regname[tmp]); |
| 650 | output_w32(0x0b000000 | s | rm_rn_rd(rs, tmp, rt)); |
| 651 | if (tmp == HOST_TEMPREG) |
| 652 | host_tempreg_release(); |
| 653 | } |
| 654 | } |
| 655 | |
| 656 | static void emit_addimm(u_int rs, uintptr_t imm, u_int rt) |
| 657 | { |
| 658 | if (imm == 0) { |
| 659 | emit_mov(rs, rt); |
| 660 | return; |
| 661 | } |
| 662 | emit_addimm_s(0, 0, rs, imm, rt); |
| 663 | } |
| 664 | |
| 665 | static void emit_addimm64(u_int rs, uintptr_t imm, u_int rt) |
| 666 | { |
| 667 | emit_addimm_s(0, 1, rs, imm, rt); |
| 668 | } |
| 669 | |
| 670 | static void emit_addimm_ptr(u_int rs, uintptr_t imm, u_int rt) |
| 671 | { |
| 672 | emit_addimm64(rs, imm, rt); |
| 673 | } |
| 674 | |
| 675 | static void emit_addimm_and_set_flags(int imm, u_int rt) |
| 676 | { |
| 677 | emit_addimm_s(1, 0, rt, imm, rt); |
| 678 | } |
| 679 | |
| 680 | static void emit_addimm_and_set_flags3(u_int rs, int imm, u_int rt) |
| 681 | { |
| 682 | emit_addimm_s(1, 0, rs, imm, rt); |
| 683 | } |
| 684 | |
| 685 | static void emit_logicop_imm(u_int op, u_int rs, u_int imm, u_int rt) |
| 686 | { |
| 687 | const char *names[] = { "and", "orr", "eor", "ands" }; |
| 688 | const char *name = names[op]; |
| 689 | u_int immr, imms; |
| 690 | op = op << 29; |
| 691 | if (is_rotated_mask(imm)) { |
| 692 | gen_logical_imm(imm, &immr, &imms); |
| 693 | assem_debug("%s %s,%s,#%#x\n", name, regname[rt], regname[rs], imm); |
| 694 | output_w32(op | 0x12000000 | n_immr_imms_rn_rd(0, immr, imms, rs, rt)); |
| 695 | } |
| 696 | else { |
| 697 | if (rs == HOST_TEMPREG || rt != HOST_TEMPREG) |
| 698 | host_tempreg_acquire(); |
| 699 | emit_movimm(imm, HOST_TEMPREG); |
| 700 | assem_debug("%s %s,%s,%s\n", name, regname[rt], regname[rs], regname[HOST_TEMPREG]); |
| 701 | output_w32(op | 0x0a000000 | rm_rn_rd(HOST_TEMPREG, rs, rt)); |
| 702 | if (rs == HOST_TEMPREG || rt != HOST_TEMPREG) |
| 703 | host_tempreg_release(); |
| 704 | } |
| 705 | (void)name; |
| 706 | } |
| 707 | |
| 708 | static void emit_andimm(u_int rs, u_int imm, u_int rt) |
| 709 | { |
| 710 | if (imm == 0) |
| 711 | emit_zeroreg(rt); |
| 712 | else |
| 713 | emit_logicop_imm(0, rs, imm, rt); |
| 714 | } |
| 715 | |
| 716 | static void emit_orimm(u_int rs, u_int imm, u_int rt) |
| 717 | { |
| 718 | if (imm == 0) { |
| 719 | if (rs != rt) |
| 720 | emit_mov(rs, rt); |
| 721 | } |
| 722 | else |
| 723 | emit_logicop_imm(1, rs, imm, rt); |
| 724 | } |
| 725 | |
| 726 | static void emit_xorimm(u_int rs, u_int imm, u_int rt) |
| 727 | { |
| 728 | if (imm == 0) { |
| 729 | if (rs != rt) |
| 730 | emit_mov(rs, rt); |
| 731 | } |
| 732 | else |
| 733 | emit_logicop_imm(2, rs, imm, rt); |
| 734 | } |
| 735 | |
| 736 | static void emit_sbfm(u_int rs,u_int imm,u_int rt) |
| 737 | { |
| 738 | assem_debug("sbfm %s,%s,#0,#%d\n",regname[rt],regname[rs],imm); |
| 739 | output_w32(0x13000000 | n_immr_imms_rn_rd(0, 0, imm, rs, rt)); |
| 740 | } |
| 741 | |
| 742 | static void emit_ubfm(u_int rs,u_int imm,u_int rt) |
| 743 | { |
| 744 | assem_debug("ubfm %s,%s,#0,#%d\n",regname[rt],regname[rs],imm); |
| 745 | output_w32(0x53000000 | n_immr_imms_rn_rd(0, 0, imm, rs, rt)); |
| 746 | } |
| 747 | |
| 748 | static void emit_shlimm(u_int rs,u_int imm,u_int rt) |
| 749 | { |
| 750 | assem_debug("lsl %s,%s,#%d\n",regname[rt],regname[rs],imm); |
| 751 | output_w32(0x53000000 | n_immr_imms_rn_rd(0, (31-imm)+1, 31-imm, rs, rt)); |
| 752 | } |
| 753 | |
| 754 | static void emit_shrimm(u_int rs,u_int imm,u_int rt) |
| 755 | { |
| 756 | assem_debug("lsr %s,%s,#%d\n",regname[rt],regname[rs],imm); |
| 757 | output_w32(0x53000000 | n_immr_imms_rn_rd(0, imm, 31, rs, rt)); |
| 758 | } |
| 759 | |
| 760 | static void emit_shrimm64(u_int rs,u_int imm,u_int rt) |
| 761 | { |
| 762 | assem_debug("lsr %s,%s,#%d\n",regname[rt],regname[rs],imm); |
| 763 | output_w32(0xd3400000 | n_immr_imms_rn_rd(0, imm, 63, rs, rt)); |
| 764 | } |
| 765 | |
| 766 | static void emit_sarimm(u_int rs,u_int imm,u_int rt) |
| 767 | { |
| 768 | assem_debug("asr %s,%s,#%d\n",regname[rt],regname[rs],imm); |
| 769 | output_w32(0x13000000 | n_immr_imms_rn_rd(0, imm, 31, rs, rt)); |
| 770 | } |
| 771 | |
| 772 | static void emit_rorimm(u_int rs,u_int imm,u_int rt) |
| 773 | { |
| 774 | assem_debug("ror %s,%s,#%d\n",regname[rt],regname[rs],imm); |
| 775 | output_w32(0x13800000 | rm_imm6_rn_rd(rs, imm, rs, rt)); |
| 776 | } |
| 777 | |
| 778 | static void emit_signextend16(u_int rs, u_int rt) |
| 779 | { |
| 780 | assem_debug("sxth %s,%s\n", regname[rt], regname[rs]); |
| 781 | output_w32(0x13000000 | n_immr_imms_rn_rd(0, 0, 15, rs, rt)); |
| 782 | } |
| 783 | |
| 784 | static void emit_shl(u_int rs,u_int rshift,u_int rt) |
| 785 | { |
| 786 | assem_debug("lsl %s,%s,%s\n",regname[rt],regname[rs],regname[rshift]); |
| 787 | output_w32(0x1ac02000 | rm_rn_rd(rshift, rs, rt)); |
| 788 | } |
| 789 | |
| 790 | static void emit_shr(u_int rs,u_int rshift,u_int rt) |
| 791 | { |
| 792 | assem_debug("lsr %s,%s,%s\n",regname[rt],regname[rs],regname[rshift]); |
| 793 | output_w32(0x1ac02400 | rm_rn_rd(rshift, rs, rt)); |
| 794 | } |
| 795 | |
| 796 | static void emit_sar(u_int rs,u_int rshift,u_int rt) |
| 797 | { |
| 798 | assem_debug("asr %s,%s,%s\n",regname[rt],regname[rs],regname[rshift]); |
| 799 | output_w32(0x1ac02800 | rm_rn_rd(rshift, rs, rt)); |
| 800 | } |
| 801 | |
| 802 | static void emit_cmpimm(u_int rs, u_int imm) |
| 803 | { |
| 804 | if (imm < 4096) { |
| 805 | assem_debug("cmp %s,%#x\n", regname[rs], imm); |
| 806 | output_w32(0x71000000 | imm12_rn_rd(imm, rs, WZR)); |
| 807 | } |
| 808 | else if (-imm < 4096) { |
| 809 | assem_debug("cmn %s,%#x\n", regname[rs], imm); |
| 810 | output_w32(0x31000000 | imm12_rn_rd(-imm, rs, WZR)); |
| 811 | } |
| 812 | else if (imm < 16777216 && !(imm & 0xfff)) { |
| 813 | assem_debug("cmp %s,#%#x\n", regname[rs], imm); |
| 814 | output_w32(0x71400000 | imm12_rn_rd(imm >> 12, rs, WZR)); |
| 815 | } |
| 816 | else { |
| 817 | host_tempreg_acquire(); |
| 818 | emit_movimm(imm, HOST_TEMPREG); |
| 819 | assem_debug("cmp %s,%s\n", regname[rs], regname[HOST_TEMPREG]); |
| 820 | output_w32(0x6b000000 | rm_rn_rd(HOST_TEMPREG, rs, WZR)); |
| 821 | host_tempreg_release(); |
| 822 | } |
| 823 | } |
| 824 | |
| 825 | static void emit_cmov_imm(u_int cond0, u_int cond1, u_int imm, u_int rt) |
| 826 | { |
| 827 | assert(imm == 0 || imm == 1); |
| 828 | assert(cond0 < 0x10); |
| 829 | assert(cond1 < 0x10); |
| 830 | if (imm) { |
| 831 | assem_debug("csinc %s,%s,%s,%s\n",regname[rt],regname[rt],regname[WZR],condname[cond1]); |
| 832 | output_w32(0x1a800400 | (cond1 << 12) | rm_rn_rd(WZR, rt, rt)); |
| 833 | } else { |
| 834 | assem_debug("csel %s,%s,%s,%s\n",regname[rt],regname[WZR],regname[rt],condname[cond0]); |
| 835 | output_w32(0x1a800000 | (cond0 << 12) | rm_rn_rd(rt, WZR, rt)); |
| 836 | } |
| 837 | } |
| 838 | |
| 839 | static void emit_cmovne_imm(u_int imm,u_int rt) |
| 840 | { |
| 841 | emit_cmov_imm(COND_NE, COND_EQ, imm, rt); |
| 842 | } |
| 843 | |
| 844 | static void emit_cmovl_imm(u_int imm,u_int rt) |
| 845 | { |
| 846 | emit_cmov_imm(COND_LT, COND_GE, imm, rt); |
| 847 | } |
| 848 | |
| 849 | static void emit_cmovb_imm(int imm,u_int rt) |
| 850 | { |
| 851 | emit_cmov_imm(COND_CC, COND_CS, imm, rt); |
| 852 | } |
| 853 | |
| 854 | static void emit_cmoveq_reg(u_int rs,u_int rt) |
| 855 | { |
| 856 | assem_debug("csel %s,%s,%s,eq\n",regname[rt],regname[rs],regname[rt]); |
| 857 | output_w32(0x1a800000 | (COND_EQ << 12) | rm_rn_rd(rt, rs, rt)); |
| 858 | } |
| 859 | |
| 860 | static void emit_cmovne_reg(u_int rs,u_int rt) |
| 861 | { |
| 862 | assem_debug("csel %s,%s,%s,ne\n",regname[rt],regname[rs],regname[rt]); |
| 863 | output_w32(0x1a800000 | (COND_NE << 12) | rm_rn_rd(rt, rs, rt)); |
| 864 | } |
| 865 | |
| 866 | static void emit_cmovl_reg(u_int rs,u_int rt) |
| 867 | { |
| 868 | assem_debug("csel %s,%s,%s,lt\n",regname[rt],regname[rs],regname[rt]); |
| 869 | output_w32(0x1a800000 | (COND_LT << 12) | rm_rn_rd(rt, rs, rt)); |
| 870 | } |
| 871 | |
| 872 | static void emit_cmovb_reg(u_int rs,u_int rt) |
| 873 | { |
| 874 | assem_debug("csel %s,%s,%s,cc\n",regname[rt],regname[rs],regname[rt]); |
| 875 | output_w32(0x1a800000 | (COND_CC << 12) | rm_rn_rd(rt, rs, rt)); |
| 876 | } |
| 877 | |
| 878 | static void emit_cmovs_reg(u_int rs,u_int rt) |
| 879 | { |
| 880 | assem_debug("csel %s,%s,%s,mi\n",regname[rt],regname[rs],regname[rt]); |
| 881 | output_w32(0x1a800000 | (COND_MI << 12) | rm_rn_rd(rt, rs, rt)); |
| 882 | } |
| 883 | |
| 884 | static void emit_csinvle_reg(u_int rs1,u_int rs2,u_int rt) |
| 885 | { |
| 886 | assem_debug("csinv %s,%s,%s,le\n",regname[rt],regname[rs1],regname[rs2]); |
| 887 | output_w32(0x5a800000 | (COND_LE << 12) | rm_rn_rd(rs2, rs1, rt)); |
| 888 | } |
| 889 | |
| 890 | static void emit_csinvne_reg(u_int rs1,u_int rs2,u_int rt) |
| 891 | { |
| 892 | assem_debug("csinv %s,%s,%s,ne\n",regname[rt],regname[rs1],regname[rs2]); |
| 893 | output_w32(0x5a800000 | (COND_NE << 12) | rm_rn_rd(rs2, rs1, rt)); |
| 894 | } |
| 895 | |
| 896 | static void emit_slti32(u_int rs,int imm,u_int rt) |
| 897 | { |
| 898 | if(rs!=rt) emit_zeroreg(rt); |
| 899 | emit_cmpimm(rs,imm); |
| 900 | if(rs==rt) emit_movimm(0,rt); |
| 901 | emit_cmovl_imm(1,rt); |
| 902 | } |
| 903 | |
| 904 | static void emit_sltiu32(u_int rs,int imm,u_int rt) |
| 905 | { |
| 906 | if(rs!=rt) emit_zeroreg(rt); |
| 907 | emit_cmpimm(rs,imm); |
| 908 | if(rs==rt) emit_movimm(0,rt); |
| 909 | emit_cmovb_imm(1,rt); |
| 910 | } |
| 911 | |
| 912 | static void emit_cmp(u_int rs,u_int rt) |
| 913 | { |
| 914 | assem_debug("cmp %s,%s\n",regname[rs],regname[rt]); |
| 915 | output_w32(0x6b000000 | rm_rn_rd(rt, rs, WZR)); |
| 916 | } |
| 917 | |
| 918 | static void emit_cmpcs(u_int rs,u_int rt) |
| 919 | { |
| 920 | assem_debug("ccmp %s,%s,#0,cs\n",regname[rs],regname[rt]); |
| 921 | output_w32(0x7a400000 | (COND_CS << 12) | rm_rn_rd(rt, rs, 0)); |
| 922 | } |
| 923 | |
| 924 | static void emit_set_gz32(u_int rs, u_int rt) |
| 925 | { |
| 926 | //assem_debug("set_gz32\n"); |
| 927 | emit_cmpimm(rs,1); |
| 928 | emit_movimm(1,rt); |
| 929 | emit_cmovl_imm(0,rt); |
| 930 | } |
| 931 | |
| 932 | static void emit_set_nz32(u_int rs, u_int rt) |
| 933 | { |
| 934 | //assem_debug("set_nz32\n"); |
| 935 | if(rs!=rt) emit_mov(rs,rt); |
| 936 | emit_test(rs,rs); |
| 937 | emit_cmovne_imm(1,rt); |
| 938 | } |
| 939 | |
| 940 | static void emit_set_if_less32(u_int rs1, u_int rs2, u_int rt) |
| 941 | { |
| 942 | //assem_debug("set if less (%%%s,%%%s),%%%s\n",regname[rs1],regname[rs2],regname[rt]); |
| 943 | if(rs1!=rt&&rs2!=rt) emit_zeroreg(rt); |
| 944 | emit_cmp(rs1,rs2); |
| 945 | if(rs1==rt||rs2==rt) emit_movimm(0,rt); |
| 946 | emit_cmovl_imm(1,rt); |
| 947 | } |
| 948 | |
| 949 | static void emit_set_if_carry32(u_int rs1, u_int rs2, u_int rt) |
| 950 | { |
| 951 | //assem_debug("set if carry (%%%s,%%%s),%%%s\n",regname[rs1],regname[rs2],regname[rt]); |
| 952 | if(rs1!=rt&&rs2!=rt) emit_zeroreg(rt); |
| 953 | emit_cmp(rs1,rs2); |
| 954 | if(rs1==rt||rs2==rt) emit_movimm(0,rt); |
| 955 | emit_cmovb_imm(1,rt); |
| 956 | } |
| 957 | |
| 958 | static int can_jump_or_call(const void *a) |
| 959 | { |
| 960 | intptr_t diff = (u_char *)a - out; |
| 961 | return (-134217728 <= diff && diff <= 134217727); |
| 962 | } |
| 963 | |
| 964 | static void emit_call(const void *a) |
| 965 | { |
| 966 | intptr_t diff = (u_char *)a - out; |
| 967 | assem_debug("bl %p (%p+%lx)%s\n", a, out, diff, func_name(a)); |
| 968 | assert(!(diff & 3)); |
| 969 | if (-134217728 <= diff && diff <= 134217727) |
| 970 | output_w32(0x94000000 | ((diff >> 2) & 0x03ffffff)); |
| 971 | else |
| 972 | abort(); |
| 973 | } |
| 974 | |
| 975 | static void emit_jmp(const void *a) |
| 976 | { |
| 977 | assem_debug("b %p (%p+%lx)%s\n", a, out, (u_char *)a - out, func_name(a)); |
| 978 | u_int offset = genjmp(a); |
| 979 | output_w32(0x14000000 | offset); |
| 980 | } |
| 981 | |
| 982 | static void emit_jne(const void *a) |
| 983 | { |
| 984 | assem_debug("bne %p\n", a); |
| 985 | u_int offset = genjmpcc(a); |
| 986 | output_w32(0x54000000 | (offset << 5) | COND_NE); |
| 987 | } |
| 988 | |
| 989 | static void emit_jeq(const void *a) |
| 990 | { |
| 991 | assem_debug("beq %p\n", a); |
| 992 | u_int offset = genjmpcc(a); |
| 993 | output_w32(0x54000000 | (offset << 5) | COND_EQ); |
| 994 | } |
| 995 | |
| 996 | static void emit_js(const void *a) |
| 997 | { |
| 998 | assem_debug("bmi %p\n", a); |
| 999 | u_int offset = genjmpcc(a); |
| 1000 | output_w32(0x54000000 | (offset << 5) | COND_MI); |
| 1001 | } |
| 1002 | |
| 1003 | static void emit_jns(const void *a) |
| 1004 | { |
| 1005 | assem_debug("bpl %p\n", a); |
| 1006 | u_int offset = genjmpcc(a); |
| 1007 | output_w32(0x54000000 | (offset << 5) | COND_PL); |
| 1008 | } |
| 1009 | |
| 1010 | static void emit_jl(const void *a) |
| 1011 | { |
| 1012 | assem_debug("blt %p\n", a); |
| 1013 | u_int offset = genjmpcc(a); |
| 1014 | output_w32(0x54000000 | (offset << 5) | COND_LT); |
| 1015 | } |
| 1016 | |
| 1017 | static void emit_jge(const void *a) |
| 1018 | { |
| 1019 | assem_debug("bge %p\n", a); |
| 1020 | u_int offset = genjmpcc(a); |
| 1021 | output_w32(0x54000000 | (offset << 5) | COND_GE); |
| 1022 | } |
| 1023 | |
| 1024 | static void emit_jo(const void *a) |
| 1025 | { |
| 1026 | assem_debug("bvs %p\n", a); |
| 1027 | u_int offset = genjmpcc(a); |
| 1028 | output_w32(0x54000000 | (offset << 5) | COND_VS); |
| 1029 | } |
| 1030 | |
| 1031 | static void emit_jno(const void *a) |
| 1032 | { |
| 1033 | assem_debug("bvc %p\n", a); |
| 1034 | u_int offset = genjmpcc(a); |
| 1035 | output_w32(0x54000000 | (offset << 5) | COND_VC); |
| 1036 | } |
| 1037 | |
| 1038 | static void emit_jc(const void *a) |
| 1039 | { |
| 1040 | assem_debug("bcs %p\n", a); |
| 1041 | u_int offset = genjmpcc(a); |
| 1042 | output_w32(0x54000000 | (offset << 5) | COND_CS); |
| 1043 | } |
| 1044 | |
| 1045 | static void emit_cb(u_int isnz, u_int is64, const void *a, u_int r) |
| 1046 | { |
| 1047 | assem_debug("cb%sz %s,%p\n", isnz?"n":"", is64?regname64[r]:regname[r], a); |
| 1048 | u_int offset = genjmpcc(a); |
| 1049 | is64 = is64 ? 0x80000000 : 0; |
| 1050 | isnz = isnz ? 0x01000000 : 0; |
| 1051 | output_w32(0x34000000 | is64 | isnz | imm19_rt(offset, r)); |
| 1052 | } |
| 1053 | |
| 1054 | static void *emit_cbz(u_int r, const void *a) |
| 1055 | { |
| 1056 | void *ret = out; |
| 1057 | emit_cb(0, 0, a, r); |
| 1058 | return ret; |
| 1059 | } |
| 1060 | |
| 1061 | static void emit_jmpreg(u_int r) |
| 1062 | { |
| 1063 | assem_debug("br %s\n", regname64[r]); |
| 1064 | output_w32(0xd61f0000 | rm_rn_rd(0, r, 0)); |
| 1065 | } |
| 1066 | |
| 1067 | static void emit_retreg(u_int r) |
| 1068 | { |
| 1069 | assem_debug("ret %s\n", r == LR ? "" : regname64[r]); |
| 1070 | output_w32(0xd65f0000 | rm_rn_rd(0, r, 0)); |
| 1071 | } |
| 1072 | |
| 1073 | static void emit_ret(void) |
| 1074 | { |
| 1075 | emit_retreg(LR); |
| 1076 | } |
| 1077 | |
| 1078 | static void emit_adr(void *addr, u_int rt) |
| 1079 | { |
| 1080 | intptr_t offset = (u_char *)addr - out; |
| 1081 | assert(-1048576 <= offset && offset < 1048576); |
| 1082 | assert(rt < 31); |
| 1083 | assem_debug("adr x%d,#%#lx\n", rt, offset); |
| 1084 | output_w32(0x10000000 | ((offset&0x3) << 29) | (((offset>>2)&0x7ffff) << 5) | rt); |
| 1085 | } |
| 1086 | |
| 1087 | static void emit_adrp(void *addr, u_int rt) |
| 1088 | { |
| 1089 | intptr_t offset = ((intptr_t)addr & ~0xfffl) - ((intptr_t)out & ~0xfffl); |
| 1090 | assert(-4294967296l <= offset && offset < 4294967296l); |
| 1091 | assert(rt < 31); |
| 1092 | offset >>= 12; |
| 1093 | assem_debug("adrp %s,#%#lx(000)\n",regname64[rt],offset); |
| 1094 | output_w32(0x90000000 | ((offset&0x3)<<29) | (((offset>>2)&0x7ffff)<<5) | rt); |
| 1095 | } |
| 1096 | |
| 1097 | static void emit_readword_indexed(int offset, u_int rs, u_int rt) |
| 1098 | { |
| 1099 | assem_debug("ldur %s,[%s+%#x]\n",regname[rt],regname64[rs],offset); |
| 1100 | assert(-256 <= offset && offset < 256); |
| 1101 | output_w32(0xb8400000 | imm9_rn_rt(offset&0x1ff, rs, rt)); |
| 1102 | } |
| 1103 | |
| 1104 | static void emit_strb_dualindexed(u_int rs1, u_int rs2, u_int rt) |
| 1105 | { |
| 1106 | assem_debug("strb %s, [%s,%s]\n",regname[rt],regname64[rs1],regname[rs2]); |
| 1107 | output_w32(0x38204800 | rm_rn_rd(rs2, rs1, rt)); |
| 1108 | } |
| 1109 | |
| 1110 | static void emit_strh_dualindexed(u_int rs1, u_int rs2, u_int rt) |
| 1111 | { |
| 1112 | assem_debug("strh %s, [%s,%s]\n",regname[rt],regname64[rs1],regname[rs2]); |
| 1113 | output_w32(0x78204800 | rm_rn_rd(rs2, rs1, rt)); |
| 1114 | } |
| 1115 | |
| 1116 | static void emit_str_dualindexed(u_int rs1, u_int rs2, u_int rt) |
| 1117 | { |
| 1118 | assem_debug("str %s, [%s,%s]\n",regname[rt],regname64[rs1],regname[rs2]); |
| 1119 | output_w32(0xb8204800 | rm_rn_rd(rs2, rs1, rt)); |
| 1120 | } |
| 1121 | |
| 1122 | static void emit_readdword_dualindexedx8(u_int rs1, u_int rs2, u_int rt) |
| 1123 | { |
| 1124 | assem_debug("ldr %s, [%s,%s, uxtw #3]\n",regname64[rt],regname64[rs1],regname[rs2]); |
| 1125 | output_w32(0xf8605800 | rm_rn_rd(rs2, rs1, rt)); |
| 1126 | } |
| 1127 | #define emit_readptr_dualindexedx_ptrlen emit_readdword_dualindexedx8 |
| 1128 | |
| 1129 | static void emit_ldrb_dualindexed(u_int rs1, u_int rs2, u_int rt) |
| 1130 | { |
| 1131 | assem_debug("ldrb %s, [%s,%s]\n",regname[rt],regname64[rs1],regname[rs2]); |
| 1132 | output_w32(0x38604800 | rm_rn_rd(rs2, rs1, rt)); |
| 1133 | } |
| 1134 | |
| 1135 | static void emit_ldrsb_dualindexed(u_int rs1, u_int rs2, u_int rt) |
| 1136 | { |
| 1137 | assem_debug("ldrsb %s, [%s,%s]\n",regname[rt],regname64[rs1],regname[rs2]); |
| 1138 | output_w32(0x38a04800 | rm_rn_rd(rs2, rs1, rt)); |
| 1139 | } |
| 1140 | |
| 1141 | static void emit_ldrh_dualindexed(u_int rs1, u_int rs2, u_int rt) |
| 1142 | { |
| 1143 | assem_debug("ldrh %s, [%s,%s, uxtw]\n",regname[rt],regname64[rs1],regname[rs2]); |
| 1144 | output_w32(0x78604800 | rm_rn_rd(rs2, rs1, rt)); |
| 1145 | } |
| 1146 | |
| 1147 | static void emit_ldrsh_dualindexed(u_int rs1, u_int rs2, u_int rt) |
| 1148 | { |
| 1149 | assem_debug("ldrsh %s, [%s,%s, uxtw]\n",regname[rt],regname64[rs1],regname[rs2]); |
| 1150 | output_w32(0x78a04800 | rm_rn_rd(rs2, rs1, rt)); |
| 1151 | } |
| 1152 | |
| 1153 | static void emit_ldr_dualindexed(u_int rs1, u_int rs2, u_int rt) |
| 1154 | { |
| 1155 | assem_debug("ldr %s, [%s,%s, uxtw]\n",regname[rt],regname64[rs1],regname[rs2]); |
| 1156 | output_w32(0xb8604800 | rm_rn_rd(rs2, rs1, rt)); |
| 1157 | } |
| 1158 | |
| 1159 | static void emit_movsbl_indexed(int offset, u_int rs, u_int rt) |
| 1160 | { |
| 1161 | assem_debug("ldursb %s,[%s+%#x]\n",regname[rt],regname64[rs],offset); |
| 1162 | assert(-256 <= offset && offset < 256); |
| 1163 | output_w32(0x38c00000 | imm9_rn_rt(offset&0x1ff, rs, rt)); |
| 1164 | } |
| 1165 | |
| 1166 | static void emit_movswl_indexed(int offset, u_int rs, u_int rt) |
| 1167 | { |
| 1168 | assem_debug("ldursh %s,[%s+%#x]\n",regname[rt],regname64[rs],offset); |
| 1169 | assert(-256 <= offset && offset < 256); |
| 1170 | output_w32(0x78c00000 | imm9_rn_rt(offset&0x1ff, rs, rt)); |
| 1171 | } |
| 1172 | |
| 1173 | static void emit_movzbl_indexed(int offset, u_int rs, u_int rt) |
| 1174 | { |
| 1175 | assem_debug("ldurb %s,[%s+%#x]\n",regname[rt],regname64[rs],offset); |
| 1176 | assert(-256 <= offset && offset < 256); |
| 1177 | output_w32(0x38400000 | imm9_rn_rt(offset&0x1ff, rs, rt)); |
| 1178 | } |
| 1179 | |
| 1180 | static void emit_movzwl_indexed(int offset, u_int rs, u_int rt) |
| 1181 | { |
| 1182 | assem_debug("ldurh %s,[%s+%#x]\n",regname[rt],regname64[rs],offset); |
| 1183 | assert(-256 <= offset && offset < 256); |
| 1184 | output_w32(0x78400000 | imm9_rn_rt(offset&0x1ff, rs, rt)); |
| 1185 | } |
| 1186 | |
| 1187 | static void emit_writeword_indexed(u_int rt, int offset, u_int rs) |
| 1188 | { |
| 1189 | if (!(offset & 3) && (u_int)offset <= 16380) { |
| 1190 | assem_debug("str %s,[%s+%#x]\n", regname[rt], regname[rs], offset); |
| 1191 | output_w32(0xb9000000 | imm12_rn_rd(offset >> 2, rs, rt)); |
| 1192 | } |
| 1193 | else if (-256 <= offset && offset < 256) { |
| 1194 | assem_debug("stur %s,[%s+%#x]\n", regname[rt], regname[rs], offset); |
| 1195 | output_w32(0xb8000000 | imm9_rn_rt(offset & 0x1ff, rs, rt)); |
| 1196 | } |
| 1197 | else |
| 1198 | assert(0); |
| 1199 | } |
| 1200 | |
| 1201 | static void emit_writehword_indexed(u_int rt, int offset, u_int rs) |
| 1202 | { |
| 1203 | if (!(offset & 1) && (u_int)offset <= 8190) { |
| 1204 | assem_debug("strh %s,[%s+%#x]\n", regname[rt], regname64[rs], offset); |
| 1205 | output_w32(0x79000000 | imm12_rn_rd(offset >> 1, rs, rt)); |
| 1206 | } |
| 1207 | else if (-256 <= offset && offset < 256) { |
| 1208 | assem_debug("sturh %s,[%s+%#x]\n", regname[rt], regname64[rs], offset); |
| 1209 | output_w32(0x78000000 | imm9_rn_rt(offset & 0x1ff, rs, rt)); |
| 1210 | } |
| 1211 | else |
| 1212 | assert(0); |
| 1213 | } |
| 1214 | |
| 1215 | static void emit_writebyte_indexed(u_int rt, int offset, u_int rs) |
| 1216 | { |
| 1217 | if ((u_int)offset < 4096) { |
| 1218 | assem_debug("strb %s,[%s+%#x]\n", regname[rt], regname64[rs], offset); |
| 1219 | output_w32(0x39000000 | imm12_rn_rd(offset, rs, rt)); |
| 1220 | } |
| 1221 | else if (-256 <= offset && offset < 256) { |
| 1222 | assem_debug("sturb %s,[%s+%#x]\n", regname[rt], regname64[rs], offset); |
| 1223 | output_w32(0x38000000 | imm9_rn_rt(offset & 0x1ff, rs, rt)); |
| 1224 | } |
| 1225 | else |
| 1226 | assert(0); |
| 1227 | } |
| 1228 | |
| 1229 | static void emit_umull(u_int rs1, u_int rs2, u_int rt) |
| 1230 | { |
| 1231 | assem_debug("umull %s,%s,%s\n",regname64[rt],regname[rs1],regname[rs2]); |
| 1232 | output_w32(0x9ba00000 | rm_ra_rn_rd(rs2, WZR, rs1, rt)); |
| 1233 | } |
| 1234 | |
| 1235 | static void emit_smull(u_int rs1, u_int rs2, u_int rt) |
| 1236 | { |
| 1237 | assem_debug("smull %s,%s,%s\n",regname64[rt],regname[rs1],regname[rs2]); |
| 1238 | output_w32(0x9b200000 | rm_ra_rn_rd(rs2, WZR, rs1, rt)); |
| 1239 | } |
| 1240 | |
| 1241 | static void emit_msub(u_int rs1, u_int rs2, u_int rs3, u_int rt) |
| 1242 | { |
| 1243 | assem_debug("msub %s,%s,%s,%s\n",regname[rt],regname[rs1],regname[rs2],regname[rs3]); |
| 1244 | output_w32(0x1b008000 | rm_ra_rn_rd(rs2, rs3, rs1, rt)); |
| 1245 | } |
| 1246 | |
| 1247 | static void emit_sdiv(u_int rs1, u_int rs2, u_int rt) |
| 1248 | { |
| 1249 | assem_debug("sdiv %s,%s,%s\n",regname[rt],regname[rs1],regname[rs2]); |
| 1250 | output_w32(0x1ac00c00 | rm_rn_rd(rs2, rs1, rt)); |
| 1251 | } |
| 1252 | |
| 1253 | static void emit_udiv(u_int rs1, u_int rs2, u_int rt) |
| 1254 | { |
| 1255 | assem_debug("udiv %s,%s,%s\n",regname[rt],regname[rs1],regname[rs2]); |
| 1256 | output_w32(0x1ac00800 | rm_rn_rd(rs2, rs1, rt)); |
| 1257 | } |
| 1258 | |
| 1259 | static void emit_clz(u_int rs, u_int rt) |
| 1260 | { |
| 1261 | assem_debug("clz %s,%s\n",regname[rt],regname[rs]); |
| 1262 | output_w32(0x5ac01000 | rn_rd(rs, rt)); |
| 1263 | } |
| 1264 | |
| 1265 | // special case for checking invalid_code |
| 1266 | static void emit_ldrb_indexedsr12_reg(u_int rbase, u_int r, u_int rt) |
| 1267 | { |
| 1268 | emit_shrimm(r, 12, rt); |
| 1269 | assem_debug("ldrb %s,[%s,%s,uxtw]\n",regname[rt],regname64[rbase],regname[rt]); |
| 1270 | output_w32(0x38604800 | rm_rn_rd(rt, rbase, rt)); |
| 1271 | } |
| 1272 | |
| 1273 | // special for loadlr_assemble, rs2 is destroyed |
| 1274 | static void emit_bic_lsl(u_int rs1,u_int rs2,u_int shift,u_int rt) |
| 1275 | { |
| 1276 | emit_shl(rs2, shift, rs2); |
| 1277 | emit_bic(rs1, rs2, rt); |
| 1278 | } |
| 1279 | |
| 1280 | static void emit_bic_lsr(u_int rs1,u_int rs2,u_int shift,u_int rt) |
| 1281 | { |
| 1282 | emit_shr(rs2, shift, rs2); |
| 1283 | emit_bic(rs1, rs2, rt); |
| 1284 | } |
| 1285 | |
| 1286 | static void emit_ldst(int is_st, int is64, u_int rt, u_int rn, u_int ofs) |
| 1287 | { |
| 1288 | u_int op = 0xb9000000; |
| 1289 | unused const char *ldst = is_st ? "st" : "ld"; |
| 1290 | unused char rp = is64 ? 'x' : 'w'; |
| 1291 | assem_debug("%sr %c%d,[x%d,#%#x]\n", ldst, rp, rt, rn, ofs); |
| 1292 | is64 = is64 ? 1 : 0; |
| 1293 | assert((ofs & ((1 << (2+is64)) - 1)) == 0); |
| 1294 | ofs = (ofs >> (2+is64)); |
| 1295 | if (!is_st) op |= 0x00400000; |
| 1296 | if (is64) op |= 0x40000000; |
| 1297 | output_w32(op | imm12_rn_rd(ofs, rn, rt)); |
| 1298 | } |
| 1299 | |
| 1300 | static void emit_ldstp(int is_st, int is64, u_int rt1, u_int rt2, u_int rn, int ofs) |
| 1301 | { |
| 1302 | u_int op = 0x29000000; |
| 1303 | unused const char *ldst = is_st ? "st" : "ld"; |
| 1304 | unused char rp = is64 ? 'x' : 'w'; |
| 1305 | assem_debug("%sp %c%d,%c%d,[x%d,#%#x]\n", ldst, rp, rt1, rp, rt2, rn, ofs); |
| 1306 | is64 = is64 ? 1 : 0; |
| 1307 | assert((ofs & ((1 << (2+is64)) - 1)) == 0); |
| 1308 | ofs = (ofs >> (2+is64)); |
| 1309 | assert(-64 <= ofs && ofs <= 63); |
| 1310 | ofs &= 0x7f; |
| 1311 | if (!is_st) op |= 0x00400000; |
| 1312 | if (is64) op |= 0x80000000; |
| 1313 | output_w32(op | imm7_rt2_rn_rt(ofs, rt2, rn, rt1)); |
| 1314 | } |
| 1315 | |
| 1316 | static void save_load_regs_all(int is_store, u_int reglist) |
| 1317 | { |
| 1318 | int ofs = 0, c = 0; |
| 1319 | u_int r, pair[2]; |
| 1320 | for (r = 0; reglist; r++, reglist >>= 1) { |
| 1321 | if (reglist & 1) |
| 1322 | pair[c++] = r; |
| 1323 | if (c == 2) { |
| 1324 | emit_ldstp(is_store, 1, pair[0], pair[1], SP, SSP_CALLEE_REGS + ofs); |
| 1325 | ofs += 8 * 2; |
| 1326 | c = 0; |
| 1327 | } |
| 1328 | } |
| 1329 | if (c) { |
| 1330 | emit_ldst(is_store, 1, pair[0], SP, SSP_CALLEE_REGS + ofs); |
| 1331 | ofs += 8; |
| 1332 | } |
| 1333 | assert(ofs <= SSP_CALLER_REGS); |
| 1334 | } |
| 1335 | |
| 1336 | // Save registers before function call |
| 1337 | static void save_regs(u_int reglist) |
| 1338 | { |
| 1339 | reglist &= CALLER_SAVE_REGS; // only save the caller-save registers |
| 1340 | save_load_regs_all(1, reglist); |
| 1341 | } |
| 1342 | |
| 1343 | // Restore registers after function call |
| 1344 | static void restore_regs(u_int reglist) |
| 1345 | { |
| 1346 | reglist &= CALLER_SAVE_REGS; |
| 1347 | save_load_regs_all(0, reglist); |
| 1348 | } |
| 1349 | |
| 1350 | /* Stubs/epilogue */ |
| 1351 | |
| 1352 | static void literal_pool(int n) |
| 1353 | { |
| 1354 | (void)literals; |
| 1355 | } |
| 1356 | |
| 1357 | static void literal_pool_jumpover(int n) |
| 1358 | { |
| 1359 | } |
| 1360 | |
| 1361 | // parsed by get_pointer, find_extjump_insn |
| 1362 | static void emit_extjump(u_char *addr, u_int target) |
| 1363 | { |
| 1364 | assert(((addr[3]&0xfc)==0x14) || ((addr[3]&0xff)==0x54)); // b or b.cond |
| 1365 | |
| 1366 | emit_movz(target & 0xffff, 0); |
| 1367 | emit_movk_lsl16(target >> 16, 0); |
| 1368 | |
| 1369 | // addr is in the current recompiled block (max 256k) |
| 1370 | // offset shouldn't exceed +/-1MB |
| 1371 | emit_adr(addr, 1); |
| 1372 | emit_far_jump(dyna_linker); |
| 1373 | } |
| 1374 | |
| 1375 | static void check_extjump2(void *src) |
| 1376 | { |
| 1377 | u_int *ptr = src; |
| 1378 | assert((ptr[0] & 0xffe0001f) == 0x52800000); // movz r0, #val |
| 1379 | (void)ptr; |
| 1380 | } |
| 1381 | |
| 1382 | // put rt_val into rt, potentially making use of rs with value rs_val |
| 1383 | static void emit_movimm_from(u_int rs_val, u_int rs, u_int rt_val, u_int rt) |
| 1384 | { |
| 1385 | int diff = rt_val - rs_val; |
| 1386 | if ((-4096 < diff && diff < 4096) |
| 1387 | || (-16777216 < diff && diff < 16777216 && !(diff & 0xfff))) |
| 1388 | emit_addimm(rs, diff, rt); |
| 1389 | else if (rt_val == ~rs_val) |
| 1390 | emit_not(rs, rt); |
| 1391 | else if (is_rotated_mask(rs_val ^ rt_val)) |
| 1392 | emit_xorimm(rs, rs_val ^ rt_val, rt); |
| 1393 | else |
| 1394 | emit_movimm(rt_val, rt); |
| 1395 | } |
| 1396 | |
| 1397 | // return 1 if the above function can do it's job cheaply |
| 1398 | static int is_similar_value(u_int v1, u_int v2) |
| 1399 | { |
| 1400 | int diff = v1 - v2; |
| 1401 | return (-4096 < diff && diff < 4096) |
| 1402 | || (-16777216 < diff && diff < 16777216 && !(diff & 0xfff)) |
| 1403 | || v1 == ~v2 |
| 1404 | || is_rotated_mask(v1 ^ v2); |
| 1405 | } |
| 1406 | |
| 1407 | static void emit_movimm_from64(u_int rs_val, u_int rs, uintptr_t rt_val, u_int rt) |
| 1408 | { |
| 1409 | if (rt_val < 0x100000000ull) { |
| 1410 | emit_movimm_from(rs_val, rs, rt_val, rt); |
| 1411 | return; |
| 1412 | } |
| 1413 | // just move the whole thing. At least on Linux all addresses |
| 1414 | // seem to be 48bit, so 3 insns - not great not terrible |
| 1415 | emit_movimm64(rt_val, rt); |
| 1416 | } |
| 1417 | |
| 1418 | // trashes x2 |
| 1419 | static void pass_args64(u_int a0, u_int a1) |
| 1420 | { |
| 1421 | if(a0==1&&a1==0) { |
| 1422 | // must swap |
| 1423 | emit_mov64(a0,2); emit_mov64(a1,1); emit_mov64(2,0); |
| 1424 | } |
| 1425 | else if(a0!=0&&a1==0) { |
| 1426 | emit_mov64(a1,1); |
| 1427 | if (a0>=0) emit_mov64(a0,0); |
| 1428 | } |
| 1429 | else { |
| 1430 | if(a0>=0&&a0!=0) emit_mov64(a0,0); |
| 1431 | if(a1>=0&&a1!=1) emit_mov64(a1,1); |
| 1432 | } |
| 1433 | } |
| 1434 | |
| 1435 | static void loadstore_extend(enum stub_type type, u_int rs, u_int rt) |
| 1436 | { |
| 1437 | switch(type) { |
| 1438 | case LOADB_STUB: emit_sbfm(rs, 7, rt); break; |
| 1439 | case LOADBU_STUB: |
| 1440 | case STOREB_STUB: emit_ubfm(rs, 7, rt); break; |
| 1441 | case LOADH_STUB: emit_sbfm(rs, 15, rt); break; |
| 1442 | case LOADHU_STUB: |
| 1443 | case STOREH_STUB: emit_ubfm(rs, 15, rt); break; |
| 1444 | case LOADW_STUB: |
| 1445 | case STOREW_STUB: if (rs != rt) emit_mov(rs, rt); break; |
| 1446 | default: assert(0); |
| 1447 | } |
| 1448 | } |
| 1449 | |
| 1450 | #include "pcsxmem.h" |
| 1451 | //#include "pcsxmem_inline.c" |
| 1452 | |
| 1453 | static void do_readstub(int n) |
| 1454 | { |
| 1455 | assem_debug("do_readstub %x\n",start+stubs[n].a*4); |
| 1456 | set_jump_target(stubs[n].addr, out); |
| 1457 | enum stub_type type = stubs[n].type; |
| 1458 | int i = stubs[n].a; |
| 1459 | int rs = stubs[n].b; |
| 1460 | const struct regstat *i_regs = (void *)stubs[n].c; |
| 1461 | u_int reglist = stubs[n].e; |
| 1462 | const signed char *i_regmap = i_regs->regmap; |
| 1463 | int rt; |
| 1464 | if(dops[i].itype==C2LS||dops[i].itype==LOADLR) { |
| 1465 | rt=get_reg(i_regmap,FTEMP); |
| 1466 | }else{ |
| 1467 | rt=get_reg(i_regmap,dops[i].rt1); |
| 1468 | } |
| 1469 | assert(rs>=0); |
| 1470 | int r,temp=-1,temp2=HOST_TEMPREG,regs_saved=0; |
| 1471 | void *restore_jump = NULL, *handler_jump = NULL; |
| 1472 | reglist|=(1<<rs); |
| 1473 | for (r = 0; r < HOST_CCREG; r++) { |
| 1474 | if (r != EXCLUDE_REG && ((1 << r) & reglist) == 0) { |
| 1475 | temp = r; |
| 1476 | break; |
| 1477 | } |
| 1478 | } |
| 1479 | if(rt>=0&&dops[i].rt1!=0) |
| 1480 | reglist&=~(1<<rt); |
| 1481 | if(temp==-1) { |
| 1482 | save_regs(reglist); |
| 1483 | regs_saved=1; |
| 1484 | temp=(rs==0)?2:0; |
| 1485 | } |
| 1486 | if((regs_saved||(reglist&2)==0)&&temp!=1&&rs!=1) |
| 1487 | temp2=1; |
| 1488 | emit_readdword(&mem_rtab,temp); |
| 1489 | emit_shrimm(rs,12,temp2); |
| 1490 | emit_readdword_dualindexedx8(temp,temp2,temp2); |
| 1491 | emit_adds64(temp2,temp2,temp2); |
| 1492 | handler_jump=out; |
| 1493 | emit_jc(0); |
| 1494 | if(dops[i].itype==C2LS||(rt>=0&&dops[i].rt1!=0)) { |
| 1495 | switch(type) { |
| 1496 | case LOADB_STUB: emit_ldrsb_dualindexed(temp2,rs,rt); break; |
| 1497 | case LOADBU_STUB: emit_ldrb_dualindexed(temp2,rs,rt); break; |
| 1498 | case LOADH_STUB: emit_ldrsh_dualindexed(temp2,rs,rt); break; |
| 1499 | case LOADHU_STUB: emit_ldrh_dualindexed(temp2,rs,rt); break; |
| 1500 | case LOADW_STUB: emit_ldr_dualindexed(temp2,rs,rt); break; |
| 1501 | default: assert(0); |
| 1502 | } |
| 1503 | } |
| 1504 | if(regs_saved) { |
| 1505 | restore_jump=out; |
| 1506 | emit_jmp(0); // jump to reg restore |
| 1507 | } |
| 1508 | else |
| 1509 | emit_jmp(stubs[n].retaddr); // return address |
| 1510 | set_jump_target(handler_jump, out); |
| 1511 | |
| 1512 | if(!regs_saved) |
| 1513 | save_regs(reglist); |
| 1514 | void *handler=NULL; |
| 1515 | if(type==LOADB_STUB||type==LOADBU_STUB) |
| 1516 | handler=jump_handler_read8; |
| 1517 | if(type==LOADH_STUB||type==LOADHU_STUB) |
| 1518 | handler=jump_handler_read16; |
| 1519 | if(type==LOADW_STUB) |
| 1520 | handler=jump_handler_read32; |
| 1521 | assert(handler); |
| 1522 | pass_args64(rs,temp2); |
| 1523 | int cc=get_reg(i_regmap,CCREG); |
| 1524 | if(cc<0) |
| 1525 | emit_loadreg(CCREG,2); |
| 1526 | emit_addimm(cc<0?2:cc,(int)stubs[n].d,2); |
| 1527 | emit_far_call(handler); |
| 1528 | // (no cycle reload after read) |
| 1529 | if(dops[i].itype==C2LS||(rt>=0&&dops[i].rt1!=0)) { |
| 1530 | loadstore_extend(type,0,rt); |
| 1531 | } |
| 1532 | if(restore_jump) |
| 1533 | set_jump_target(restore_jump, out); |
| 1534 | restore_regs(reglist); |
| 1535 | emit_jmp(stubs[n].retaddr); |
| 1536 | } |
| 1537 | |
| 1538 | static void inline_readstub(enum stub_type type, int i, u_int addr, |
| 1539 | const signed char regmap[], int target, int adj, u_int reglist) |
| 1540 | { |
| 1541 | int ra = cinfo[i].addr; |
| 1542 | int rt = get_reg(regmap, target); |
| 1543 | assert(ra >= 0); |
| 1544 | u_int is_dynamic=0; |
| 1545 | uintptr_t host_addr = 0; |
| 1546 | void *handler; |
| 1547 | int cc=get_reg(regmap,CCREG); |
| 1548 | //if(pcsx_direct_read(type,addr,adj,cc,target?ra:-1,rt)) |
| 1549 | // return; |
| 1550 | handler = get_direct_memhandler(mem_rtab, addr, type, &host_addr); |
| 1551 | if (handler == NULL) { |
| 1552 | if(rt<0||dops[i].rt1==0) |
| 1553 | return; |
| 1554 | if (addr != host_addr) |
| 1555 | emit_movimm_from64(addr, ra, host_addr, ra); |
| 1556 | switch(type) { |
| 1557 | case LOADB_STUB: emit_movsbl_indexed(0,ra,rt); break; |
| 1558 | case LOADBU_STUB: emit_movzbl_indexed(0,ra,rt); break; |
| 1559 | case LOADH_STUB: emit_movswl_indexed(0,ra,rt); break; |
| 1560 | case LOADHU_STUB: emit_movzwl_indexed(0,ra,rt); break; |
| 1561 | case LOADW_STUB: emit_readword_indexed(0,ra,rt); break; |
| 1562 | default: assert(0); |
| 1563 | } |
| 1564 | return; |
| 1565 | } |
| 1566 | is_dynamic = pcsxmem_is_handler_dynamic(addr); |
| 1567 | if (is_dynamic) { |
| 1568 | if(type==LOADB_STUB||type==LOADBU_STUB) |
| 1569 | handler=jump_handler_read8; |
| 1570 | if(type==LOADH_STUB||type==LOADHU_STUB) |
| 1571 | handler=jump_handler_read16; |
| 1572 | if(type==LOADW_STUB) |
| 1573 | handler=jump_handler_read32; |
| 1574 | } |
| 1575 | |
| 1576 | // call a memhandler |
| 1577 | if(rt>=0&&dops[i].rt1!=0) |
| 1578 | reglist&=~(1<<rt); |
| 1579 | save_regs(reglist); |
| 1580 | if(target==0) |
| 1581 | emit_movimm(addr,0); |
| 1582 | else if(ra!=0) |
| 1583 | emit_mov(ra,0); |
| 1584 | if(cc<0) |
| 1585 | emit_loadreg(CCREG,2); |
| 1586 | emit_addimm(cc<0?2:cc,adj,2); |
| 1587 | if(is_dynamic) { |
| 1588 | uintptr_t l1 = ((uintptr_t *)mem_rtab)[addr>>12] << 1; |
| 1589 | intptr_t offset = (l1 & ~0xfffl) - ((intptr_t)out & ~0xfffl); |
| 1590 | if (-4294967296l <= offset && offset < 4294967296l) { |
| 1591 | emit_adrp((void *)l1, 1); |
| 1592 | emit_addimm64(1, l1 & 0xfff, 1); |
| 1593 | } |
| 1594 | else |
| 1595 | emit_movimm64(l1, 1); |
| 1596 | } |
| 1597 | else |
| 1598 | emit_far_call(do_memhandler_pre); |
| 1599 | |
| 1600 | emit_far_call(handler); |
| 1601 | |
| 1602 | // (no cycle reload after read) |
| 1603 | if(rt>=0&&dops[i].rt1!=0) |
| 1604 | loadstore_extend(type, 0, rt); |
| 1605 | restore_regs(reglist); |
| 1606 | } |
| 1607 | |
| 1608 | static void do_writestub(int n) |
| 1609 | { |
| 1610 | assem_debug("do_writestub %x\n",start+stubs[n].a*4); |
| 1611 | set_jump_target(stubs[n].addr, out); |
| 1612 | enum stub_type type=stubs[n].type; |
| 1613 | int i=stubs[n].a; |
| 1614 | int rs=stubs[n].b; |
| 1615 | struct regstat *i_regs=(struct regstat *)stubs[n].c; |
| 1616 | u_int reglist=stubs[n].e; |
| 1617 | signed char *i_regmap=i_regs->regmap; |
| 1618 | int rt,r; |
| 1619 | if(dops[i].itype==C2LS) { |
| 1620 | rt=get_reg(i_regmap,r=FTEMP); |
| 1621 | }else{ |
| 1622 | rt=get_reg(i_regmap,r=dops[i].rs2); |
| 1623 | } |
| 1624 | assert(rs>=0); |
| 1625 | assert(rt>=0); |
| 1626 | int rtmp,temp=-1,temp2,regs_saved=0; |
| 1627 | void *restore_jump = NULL, *handler_jump = NULL; |
| 1628 | int reglist2=reglist|(1<<rs)|(1<<rt); |
| 1629 | for (rtmp = 0; rtmp < HOST_CCREG; rtmp++) { |
| 1630 | if (rtmp != EXCLUDE_REG && ((1 << rtmp) & reglist) == 0) { |
| 1631 | temp = rtmp; |
| 1632 | break; |
| 1633 | } |
| 1634 | } |
| 1635 | if(temp==-1) { |
| 1636 | save_regs(reglist); |
| 1637 | regs_saved=1; |
| 1638 | for(rtmp=0;rtmp<=3;rtmp++) |
| 1639 | if(rtmp!=rs&&rtmp!=rt) |
| 1640 | {temp=rtmp;break;} |
| 1641 | } |
| 1642 | if((regs_saved||(reglist2&8)==0)&&temp!=3&&rs!=3&&rt!=3) |
| 1643 | temp2=3; |
| 1644 | else { |
| 1645 | host_tempreg_acquire(); |
| 1646 | temp2=HOST_TEMPREG; |
| 1647 | } |
| 1648 | emit_readdword(&mem_wtab,temp); |
| 1649 | emit_shrimm(rs,12,temp2); |
| 1650 | emit_readdword_dualindexedx8(temp,temp2,temp2); |
| 1651 | emit_adds64(temp2,temp2,temp2); |
| 1652 | handler_jump=out; |
| 1653 | emit_jc(0); |
| 1654 | switch(type) { |
| 1655 | case STOREB_STUB: emit_strb_dualindexed(temp2,rs,rt); break; |
| 1656 | case STOREH_STUB: emit_strh_dualindexed(temp2,rs,rt); break; |
| 1657 | case STOREW_STUB: emit_str_dualindexed(temp2,rs,rt); break; |
| 1658 | default: assert(0); |
| 1659 | } |
| 1660 | if(regs_saved) { |
| 1661 | restore_jump=out; |
| 1662 | emit_jmp(0); // jump to reg restore |
| 1663 | } |
| 1664 | else |
| 1665 | emit_jmp(stubs[n].retaddr); // return address (invcode check) |
| 1666 | set_jump_target(handler_jump, out); |
| 1667 | |
| 1668 | if(!regs_saved) |
| 1669 | save_regs(reglist); |
| 1670 | void *handler=NULL; |
| 1671 | switch(type) { |
| 1672 | case STOREB_STUB: handler=jump_handler_write8; break; |
| 1673 | case STOREH_STUB: handler=jump_handler_write16; break; |
| 1674 | case STOREW_STUB: handler=jump_handler_write32; break; |
| 1675 | default: assert(0); |
| 1676 | } |
| 1677 | assert(handler); |
| 1678 | pass_args(rs,rt); |
| 1679 | if(temp2!=3) { |
| 1680 | emit_mov64(temp2,3); |
| 1681 | host_tempreg_release(); |
| 1682 | } |
| 1683 | int cc=get_reg(i_regmap,CCREG); |
| 1684 | if(cc<0) |
| 1685 | emit_loadreg(CCREG,2); |
| 1686 | emit_addimm(cc<0?2:cc,(int)stubs[n].d,2); |
| 1687 | // returns new cycle_count |
| 1688 | emit_far_call(handler); |
| 1689 | emit_addimm(0,-(int)stubs[n].d,cc<0?2:cc); |
| 1690 | if(cc<0) |
| 1691 | emit_storereg(CCREG,2); |
| 1692 | if(restore_jump) |
| 1693 | set_jump_target(restore_jump, out); |
| 1694 | restore_regs(reglist); |
| 1695 | emit_jmp(stubs[n].retaddr); |
| 1696 | } |
| 1697 | |
| 1698 | static void inline_writestub(enum stub_type type, int i, u_int addr, |
| 1699 | const signed char regmap[], int target, int adj, u_int reglist) |
| 1700 | { |
| 1701 | int ra = cinfo[i].addr; |
| 1702 | int rt = get_reg(regmap,target); |
| 1703 | assert(ra >= 0); |
| 1704 | assert(rt >= 0); |
| 1705 | uintptr_t host_addr = 0; |
| 1706 | void *handler = get_direct_memhandler(mem_wtab, addr, type, &host_addr); |
| 1707 | if (handler == NULL) { |
| 1708 | if (addr != host_addr) |
| 1709 | emit_movimm_from64(addr, ra, host_addr, ra); |
| 1710 | switch (type) { |
| 1711 | case STOREB_STUB: emit_writebyte_indexed(rt, 0, ra); break; |
| 1712 | case STOREH_STUB: emit_writehword_indexed(rt, 0, ra); break; |
| 1713 | case STOREW_STUB: emit_writeword_indexed(rt, 0, ra); break; |
| 1714 | default: assert(0); |
| 1715 | } |
| 1716 | return; |
| 1717 | } |
| 1718 | |
| 1719 | // call a memhandler |
| 1720 | save_regs(reglist); |
| 1721 | emit_writeword(ra, &address); // some handlers still need it |
| 1722 | loadstore_extend(type, rt, 0); |
| 1723 | int cc, cc_use; |
| 1724 | cc = cc_use = get_reg(regmap, CCREG); |
| 1725 | if (cc < 0) |
| 1726 | emit_loadreg(CCREG, (cc_use = 2)); |
| 1727 | emit_addimm(cc_use, adj, 2); |
| 1728 | |
| 1729 | emit_far_call(do_memhandler_pre); |
| 1730 | emit_far_call(handler); |
| 1731 | emit_far_call(do_memhandler_post); |
| 1732 | emit_addimm(0, -adj, cc_use); |
| 1733 | if (cc < 0) |
| 1734 | emit_storereg(CCREG, cc_use); |
| 1735 | restore_regs(reglist); |
| 1736 | } |
| 1737 | |
| 1738 | /* Special assem */ |
| 1739 | |
| 1740 | static void c2op_prologue(u_int op, int i, const struct regstat *i_regs, u_int reglist) |
| 1741 | { |
| 1742 | save_load_regs_all(1, reglist); |
| 1743 | cop2_do_stall_check(op, i, i_regs, 0); |
| 1744 | #ifdef PCNT |
| 1745 | emit_movimm(op, 0); |
| 1746 | emit_far_call(pcnt_gte_start); |
| 1747 | #endif |
| 1748 | // pointer to cop2 regs |
| 1749 | emit_addimm64(FP, (u_char *)&psxRegs.CP2D.r[0] - (u_char *)&dynarec_local, 0); |
| 1750 | } |
| 1751 | |
| 1752 | static void c2op_epilogue(u_int op,u_int reglist) |
| 1753 | { |
| 1754 | #ifdef PCNT |
| 1755 | emit_movimm(op, 0); |
| 1756 | emit_far_call(pcnt_gte_end); |
| 1757 | #endif |
| 1758 | save_load_regs_all(0, reglist); |
| 1759 | } |
| 1760 | |
| 1761 | static void c2op_assemble(int i, const struct regstat *i_regs) |
| 1762 | { |
| 1763 | u_int c2op=source[i]&0x3f; |
| 1764 | u_int hr,reglist_full=0,reglist; |
| 1765 | int need_flags,need_ir; |
| 1766 | for(hr=0;hr<HOST_REGS;hr++) { |
| 1767 | if(i_regs->regmap[hr]>=0) reglist_full|=1<<hr; |
| 1768 | } |
| 1769 | reglist=reglist_full&CALLER_SAVE_REGS; |
| 1770 | |
| 1771 | if (gte_handlers[c2op]!=NULL) { |
| 1772 | need_flags=!(gte_unneeded[i+1]>>63); // +1 because of how liveness detection works |
| 1773 | need_ir=(gte_unneeded[i+1]&0xe00)!=0xe00; |
| 1774 | assem_debug("gte op %08x, unneeded %016lx, need_flags %d, need_ir %d\n", |
| 1775 | source[i],gte_unneeded[i+1],need_flags,need_ir); |
| 1776 | if(HACK_ENABLED(NDHACK_GTE_NO_FLAGS)) |
| 1777 | need_flags=0; |
| 1778 | //int shift = (source[i] >> 19) & 1; |
| 1779 | //int lm = (source[i] >> 10) & 1; |
| 1780 | switch(c2op) { |
| 1781 | default: |
| 1782 | (void)need_ir; |
| 1783 | c2op_prologue(c2op, i, i_regs, reglist); |
| 1784 | emit_movimm(source[i],1); // opcode |
| 1785 | emit_writeword(1,&psxRegs.code); |
| 1786 | emit_far_call(need_flags?gte_handlers[c2op]:gte_handlers_nf[c2op]); |
| 1787 | break; |
| 1788 | } |
| 1789 | c2op_epilogue(c2op,reglist); |
| 1790 | } |
| 1791 | } |
| 1792 | |
| 1793 | static void c2op_ctc2_31_assemble(signed char sl, signed char temp) |
| 1794 | { |
| 1795 | //value = value & 0x7ffff000; |
| 1796 | //if (value & 0x7f87e000) value |= 0x80000000; |
| 1797 | emit_andimm(sl, 0x7fffe000, temp); |
| 1798 | emit_testimm(temp, 0xff87ffff); |
| 1799 | emit_andimm(sl, 0x7ffff000, temp); |
| 1800 | host_tempreg_acquire(); |
| 1801 | emit_orimm(temp, 0x80000000, HOST_TEMPREG); |
| 1802 | emit_cmovne_reg(HOST_TEMPREG, temp); |
| 1803 | host_tempreg_release(); |
| 1804 | assert(0); // testing needed |
| 1805 | } |
| 1806 | |
| 1807 | static void do_mfc2_31_one(u_int copr,signed char temp) |
| 1808 | { |
| 1809 | emit_readshword(®_cop2d[copr],temp); |
| 1810 | emit_bicsar_imm(temp,31,temp); |
| 1811 | emit_cmpimm(temp,0xf80); |
| 1812 | emit_csinvle_reg(temp,WZR,temp); // if (temp > 0xf80) temp = ~0; |
| 1813 | emit_andimm(temp,0xf80,temp); |
| 1814 | } |
| 1815 | |
| 1816 | static void c2op_mfc2_29_assemble(signed char tl, signed char temp) |
| 1817 | { |
| 1818 | if (temp < 0) { |
| 1819 | host_tempreg_acquire(); |
| 1820 | temp = HOST_TEMPREG; |
| 1821 | } |
| 1822 | do_mfc2_31_one(9,temp); |
| 1823 | emit_shrimm(temp,7,tl); |
| 1824 | do_mfc2_31_one(10,temp); |
| 1825 | emit_orrshr_imm(temp,2,tl); |
| 1826 | do_mfc2_31_one(11,temp); |
| 1827 | emit_orrshl_imm(temp,3,tl); |
| 1828 | emit_writeword(tl,®_cop2d[29]); |
| 1829 | |
| 1830 | if (temp == HOST_TEMPREG) |
| 1831 | host_tempreg_release(); |
| 1832 | } |
| 1833 | |
| 1834 | static void multdiv_assemble_arm64(int i, const struct regstat *i_regs) |
| 1835 | { |
| 1836 | // case 0x18: MULT |
| 1837 | // case 0x19: MULTU |
| 1838 | // case 0x1A: DIV |
| 1839 | // case 0x1B: DIVU |
| 1840 | if(dops[i].rs1&&dops[i].rs2) |
| 1841 | { |
| 1842 | switch(dops[i].opcode2) |
| 1843 | { |
| 1844 | case 0x18: // MULT |
| 1845 | case 0x19: // MULTU |
| 1846 | { |
| 1847 | signed char m1=get_reg(i_regs->regmap,dops[i].rs1); |
| 1848 | signed char m2=get_reg(i_regs->regmap,dops[i].rs2); |
| 1849 | signed char hi=get_reg(i_regs->regmap,HIREG); |
| 1850 | signed char lo=get_reg(i_regs->regmap,LOREG); |
| 1851 | assert(m1>=0); |
| 1852 | assert(m2>=0); |
| 1853 | assert(hi>=0); |
| 1854 | assert(lo>=0); |
| 1855 | |
| 1856 | if(dops[i].opcode2==0x18) // MULT |
| 1857 | emit_smull(m1,m2,hi); |
| 1858 | else // MULTU |
| 1859 | emit_umull(m1,m2,hi); |
| 1860 | |
| 1861 | emit_mov(hi,lo); |
| 1862 | emit_shrimm64(hi,32,hi); |
| 1863 | break; |
| 1864 | } |
| 1865 | case 0x1A: // DIV |
| 1866 | case 0x1B: // DIVU |
| 1867 | { |
| 1868 | signed char numerator=get_reg(i_regs->regmap,dops[i].rs1); |
| 1869 | signed char denominator=get_reg(i_regs->regmap,dops[i].rs2); |
| 1870 | signed char quotient=get_reg(i_regs->regmap,LOREG); |
| 1871 | signed char remainder=get_reg(i_regs->regmap,HIREG); |
| 1872 | assert(numerator>=0); |
| 1873 | assert(denominator>=0); |
| 1874 | assert(quotient>=0); |
| 1875 | assert(remainder>=0); |
| 1876 | |
| 1877 | if (dops[i].opcode2 == 0x1A) // DIV |
| 1878 | emit_sdiv(numerator,denominator,quotient); |
| 1879 | else // DIVU |
| 1880 | emit_udiv(numerator,denominator,quotient); |
| 1881 | emit_msub(quotient,denominator,numerator,remainder); |
| 1882 | |
| 1883 | // div 0 quotient (remainder is already correct) |
| 1884 | host_tempreg_acquire(); |
| 1885 | if (dops[i].opcode2 == 0x1A) { // DIV |
| 1886 | emit_add_lsrimm(WZR,numerator,31,HOST_TEMPREG); |
| 1887 | emit_orn_asrimm(HOST_TEMPREG,numerator,31,HOST_TEMPREG); |
| 1888 | } |
| 1889 | else |
| 1890 | emit_movimm(~0,HOST_TEMPREG); |
| 1891 | emit_test(denominator,denominator); |
| 1892 | emit_cmoveq_reg(HOST_TEMPREG,quotient); |
| 1893 | host_tempreg_release(); |
| 1894 | break; |
| 1895 | } |
| 1896 | default: |
| 1897 | assert(0); |
| 1898 | } |
| 1899 | } |
| 1900 | else |
| 1901 | { |
| 1902 | signed char hr=get_reg(i_regs->regmap,HIREG); |
| 1903 | signed char lr=get_reg(i_regs->regmap,LOREG); |
| 1904 | if ((dops[i].opcode2==0x1A || dops[i].opcode2==0x1B) && dops[i].rs2==0) // div 0 |
| 1905 | { |
| 1906 | if (dops[i].rs1) { |
| 1907 | signed char numerator = get_reg(i_regs->regmap, dops[i].rs1); |
| 1908 | assert(numerator >= 0); |
| 1909 | if (hr >= 0) |
| 1910 | emit_mov(numerator,hr); |
| 1911 | if (lr >= 0) { |
| 1912 | if (dops[i].opcode2 == 0x1A) { // DIV |
| 1913 | emit_add_lsrimm(WZR,numerator,31,lr); |
| 1914 | emit_orn_asrimm(lr,numerator,31,lr); |
| 1915 | } |
| 1916 | else |
| 1917 | emit_movimm(~0,lr); |
| 1918 | } |
| 1919 | } |
| 1920 | else { |
| 1921 | if (hr >= 0) emit_zeroreg(hr); |
| 1922 | if (lr >= 0) emit_movimm(~0,lr); |
| 1923 | } |
| 1924 | } |
| 1925 | else if ((dops[i].opcode2==0x1A || dops[i].opcode2==0x1B) && dops[i].rs1==0) |
| 1926 | { |
| 1927 | signed char denominator = get_reg(i_regs->regmap, dops[i].rs2); |
| 1928 | assert(denominator >= 0); |
| 1929 | if (hr >= 0) emit_zeroreg(hr); |
| 1930 | if (lr >= 0) { |
| 1931 | emit_zeroreg(lr); |
| 1932 | emit_test(denominator, denominator); |
| 1933 | emit_csinvne_reg(lr, lr, lr); |
| 1934 | } |
| 1935 | } |
| 1936 | else |
| 1937 | { |
| 1938 | // Multiply by zero is zero. |
| 1939 | if (hr >= 0) emit_zeroreg(hr); |
| 1940 | if (lr >= 0) emit_zeroreg(lr); |
| 1941 | } |
| 1942 | } |
| 1943 | } |
| 1944 | #define multdiv_assemble multdiv_assemble_arm64 |
| 1945 | |
| 1946 | static void do_jump_vaddr(u_int rs) |
| 1947 | { |
| 1948 | if (rs != 0) |
| 1949 | emit_mov(rs, 0); |
| 1950 | emit_far_call(ndrc_get_addr_ht); |
| 1951 | emit_jmpreg(0); |
| 1952 | } |
| 1953 | |
| 1954 | static void do_preload_rhash(u_int r) { |
| 1955 | // Don't need this for ARM. On x86, this puts the value 0xf8 into the |
| 1956 | // register. On ARM the hash can be done with a single instruction (below) |
| 1957 | } |
| 1958 | |
| 1959 | static void do_preload_rhtbl(u_int ht) { |
| 1960 | emit_addimm64(FP, (u_char *)&mini_ht - (u_char *)&dynarec_local, ht); |
| 1961 | } |
| 1962 | |
| 1963 | static void do_rhash(u_int rs,u_int rh) { |
| 1964 | emit_andimm(rs, 0xf8, rh); |
| 1965 | } |
| 1966 | |
| 1967 | static void do_miniht_load(int ht, u_int rh) { |
| 1968 | emit_add64(ht, rh, ht); |
| 1969 | emit_ldst(0, 0, rh, ht, 0); |
| 1970 | } |
| 1971 | |
| 1972 | static void do_miniht_jump(u_int rs, u_int rh, u_int ht) { |
| 1973 | emit_cmp(rh, rs); |
| 1974 | void *jaddr = out; |
| 1975 | emit_jeq(0); |
| 1976 | do_jump_vaddr(rs); |
| 1977 | |
| 1978 | set_jump_target(jaddr, out); |
| 1979 | assem_debug("ldr %s,[%s,#8]\n",regname64[ht], regname64[ht]); |
| 1980 | output_w32(0xf9400000 | imm12_rn_rd(8 >> 3, ht, ht)); |
| 1981 | emit_jmpreg(ht); |
| 1982 | } |
| 1983 | |
| 1984 | // parsed by set_jump_target? |
| 1985 | static void do_miniht_insert(u_int return_address,u_int rt,int temp) { |
| 1986 | emit_movz_lsl16((return_address>>16)&0xffff,rt); |
| 1987 | emit_movk(return_address&0xffff,rt); |
| 1988 | add_to_linker(out,return_address,1); |
| 1989 | emit_adr(out,temp); |
| 1990 | emit_writedword(temp,&mini_ht[(return_address&0xFF)>>3][1]); |
| 1991 | emit_writeword(rt,&mini_ht[(return_address&0xFF)>>3][0]); |
| 1992 | } |
| 1993 | |
| 1994 | static unused void clear_cache_arm64(char *start, char *end) |
| 1995 | { |
| 1996 | // Don't rely on GCC's __clear_cache implementation, as it caches |
| 1997 | // icache/dcache cache line sizes, that can vary between cores on |
| 1998 | // big.LITTLE architectures. |
| 1999 | uint64_t addr, ctr_el0; |
| 2000 | static size_t icache_line_size = 0xffff, dcache_line_size = 0xffff; |
| 2001 | size_t isize, dsize; |
| 2002 | |
| 2003 | __asm__ volatile("mrs %0, ctr_el0" : "=r"(ctr_el0)); |
| 2004 | isize = 4 << ((ctr_el0 >> 0) & 0xf); |
| 2005 | dsize = 4 << ((ctr_el0 >> 16) & 0xf); |
| 2006 | |
| 2007 | // use the global minimum cache line size |
| 2008 | icache_line_size = isize = icache_line_size < isize ? icache_line_size : isize; |
| 2009 | dcache_line_size = dsize = dcache_line_size < dsize ? dcache_line_size : dsize; |
| 2010 | |
| 2011 | /* If CTR_EL0.IDC is enabled, Data cache clean to the Point of Unification is |
| 2012 | not required for instruction to data coherence. */ |
| 2013 | if ((ctr_el0 & (1 << 28)) == 0x0) { |
| 2014 | addr = (uint64_t)start & ~(uint64_t)(dsize - 1); |
| 2015 | for (; addr < (uint64_t)end; addr += dsize) |
| 2016 | // use "civac" instead of "cvau", as this is the suggested workaround for |
| 2017 | // Cortex-A53 errata 819472, 826319, 827319 and 824069. |
| 2018 | __asm__ volatile("dc civac, %0" : : "r"(addr) : "memory"); |
| 2019 | } |
| 2020 | __asm__ volatile("dsb ish" : : : "memory"); |
| 2021 | |
| 2022 | /* If CTR_EL0.DIC is enabled, Instruction cache cleaning to the Point of |
| 2023 | Unification is not required for instruction to data coherence. */ |
| 2024 | if ((ctr_el0 & (1 << 29)) == 0x0) { |
| 2025 | addr = (uint64_t)start & ~(uint64_t)(isize - 1); |
| 2026 | for (; addr < (uint64_t)end; addr += isize) |
| 2027 | __asm__ volatile("ic ivau, %0" : : "r"(addr) : "memory"); |
| 2028 | |
| 2029 | __asm__ volatile("dsb ish" : : : "memory"); |
| 2030 | } |
| 2031 | |
| 2032 | __asm__ volatile("isb" : : : "memory"); |
| 2033 | } |
| 2034 | |
| 2035 | // CPU-architecture-specific initialization |
| 2036 | static void arch_init(void) |
| 2037 | { |
| 2038 | uintptr_t diff = (u_char *)&ndrc->tramp.f - (u_char *)&ndrc->tramp.ops; |
| 2039 | struct tramp_insns *ops = NDRC_WRITE_OFFSET(ndrc->tramp.ops); |
| 2040 | size_t i; |
| 2041 | assert(!(diff & 3)); |
| 2042 | start_tcache_write(ops, (u_char *)ops + sizeof(ndrc->tramp.ops)); |
| 2043 | for (i = 0; i < ARRAY_SIZE(ndrc->tramp.ops); i++) { |
| 2044 | ops[i].ldr = 0x58000000 | imm19_rt(diff >> 2, 17); // ldr x17, [=val] |
| 2045 | ops[i].br = 0xd61f0000 | rm_rn_rd(0, 17, 0); // br x17 |
| 2046 | } |
| 2047 | end_tcache_write(ops, (u_char *)ops + sizeof(ndrc->tramp.ops)); |
| 2048 | } |
| 2049 | |
| 2050 | // vim:shiftwidth=2:expandtab |