| 1 | /* |
| 2 | * Copyright (C) 2014-2020 Paul Cercueil <paul@crapouillou.net> |
| 3 | * |
| 4 | * This library is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU Lesser General Public |
| 6 | * License as published by the Free Software Foundation; either |
| 7 | * version 2.1 of the License, or (at your option) any later version. |
| 8 | * |
| 9 | * This library is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 12 | * Lesser General Public License for more details. |
| 13 | */ |
| 14 | |
| 15 | #include "blockcache.h" |
| 16 | #include "debug.h" |
| 17 | #include "disassembler.h" |
| 18 | #include "emitter.h" |
| 19 | #include "optimizer.h" |
| 20 | #include "regcache.h" |
| 21 | |
| 22 | #include <lightning.h> |
| 23 | #include <stdbool.h> |
| 24 | #include <stddef.h> |
| 25 | |
| 26 | typedef void (*lightrec_rec_func_t)(const struct block *, |
| 27 | const struct opcode *, u32); |
| 28 | |
| 29 | /* Forward declarations */ |
| 30 | static void rec_SPECIAL(const struct block *block, |
| 31 | const struct opcode *op, u32 pc); |
| 32 | static void rec_REGIMM(const struct block *block, |
| 33 | const struct opcode *op, u32 pc); |
| 34 | static void rec_CP0(const struct block *block, const struct opcode *op, u32 pc); |
| 35 | static void rec_CP2(const struct block *block, const struct opcode *op, u32 pc); |
| 36 | |
| 37 | |
| 38 | static void unknown_opcode(const struct block *block, |
| 39 | const struct opcode *op, u32 pc) |
| 40 | { |
| 41 | pr_warn("Unknown opcode: 0x%08x at PC 0x%08x\n", op->opcode, pc); |
| 42 | } |
| 43 | |
| 44 | static void lightrec_emit_end_of_block(const struct block *block, |
| 45 | const struct opcode *op, u32 pc, |
| 46 | s8 reg_new_pc, u32 imm, u8 ra_reg, |
| 47 | u32 link, bool update_cycles) |
| 48 | { |
| 49 | struct lightrec_state *state = block->state; |
| 50 | struct regcache *reg_cache = state->reg_cache; |
| 51 | u32 cycles = state->cycles; |
| 52 | jit_state_t *_jit = block->_jit; |
| 53 | |
| 54 | jit_note(__FILE__, __LINE__); |
| 55 | |
| 56 | if (link) { |
| 57 | /* Update the $ra register */ |
| 58 | u8 link_reg = lightrec_alloc_reg_out(reg_cache, _jit, ra_reg); |
| 59 | jit_movi(link_reg, link); |
| 60 | lightrec_free_reg(reg_cache, link_reg); |
| 61 | } |
| 62 | |
| 63 | if (reg_new_pc < 0) { |
| 64 | reg_new_pc = lightrec_alloc_reg(reg_cache, _jit, JIT_V0); |
| 65 | lightrec_lock_reg(reg_cache, _jit, reg_new_pc); |
| 66 | |
| 67 | jit_movi(reg_new_pc, imm); |
| 68 | } |
| 69 | |
| 70 | if (has_delay_slot(op->c) && |
| 71 | !(op->flags & (LIGHTREC_NO_DS | LIGHTREC_LOCAL_BRANCH))) { |
| 72 | cycles += lightrec_cycles_of_opcode(op->next->c); |
| 73 | |
| 74 | /* Recompile the delay slot */ |
| 75 | if (op->next->c.opcode) |
| 76 | lightrec_rec_opcode(block, op->next, pc + 4); |
| 77 | } |
| 78 | |
| 79 | /* Store back remaining registers */ |
| 80 | lightrec_storeback_regs(reg_cache, _jit); |
| 81 | |
| 82 | jit_movr(JIT_V0, reg_new_pc); |
| 83 | |
| 84 | if (cycles && update_cycles) { |
| 85 | jit_subi(LIGHTREC_REG_CYCLE, LIGHTREC_REG_CYCLE, cycles); |
| 86 | pr_debug("EOB: %u cycles\n", cycles); |
| 87 | } |
| 88 | |
| 89 | if (op->next && ((op->flags & LIGHTREC_NO_DS) || op->next->next)) |
| 90 | state->branches[state->nb_branches++] = jit_jmpi(); |
| 91 | } |
| 92 | |
| 93 | void lightrec_emit_eob(const struct block *block, |
| 94 | const struct opcode *op, u32 pc) |
| 95 | { |
| 96 | struct lightrec_state *state = block->state; |
| 97 | struct regcache *reg_cache = state->reg_cache; |
| 98 | jit_state_t *_jit = block->_jit; |
| 99 | |
| 100 | lightrec_storeback_regs(reg_cache, _jit); |
| 101 | |
| 102 | jit_movi(JIT_V0, pc); |
| 103 | jit_subi(LIGHTREC_REG_CYCLE, LIGHTREC_REG_CYCLE, |
| 104 | state->cycles - lightrec_cycles_of_opcode(op->c)); |
| 105 | |
| 106 | state->branches[state->nb_branches++] = jit_jmpi(); |
| 107 | } |
| 108 | |
| 109 | static void rec_special_JR(const struct block *block, |
| 110 | const struct opcode *op, u32 pc) |
| 111 | { |
| 112 | struct regcache *reg_cache = block->state->reg_cache; |
| 113 | jit_state_t *_jit = block->_jit; |
| 114 | u8 rs = lightrec_request_reg_in(reg_cache, _jit, op->r.rs, JIT_V0); |
| 115 | |
| 116 | _jit_name(block->_jit, __func__); |
| 117 | lightrec_lock_reg(reg_cache, _jit, rs); |
| 118 | lightrec_emit_end_of_block(block, op, pc, rs, 0, 31, 0, true); |
| 119 | } |
| 120 | |
| 121 | static void rec_special_JALR(const struct block *block, |
| 122 | const struct opcode *op, u32 pc) |
| 123 | { |
| 124 | struct regcache *reg_cache = block->state->reg_cache; |
| 125 | jit_state_t *_jit = block->_jit; |
| 126 | u8 rs = lightrec_request_reg_in(reg_cache, _jit, op->r.rs, JIT_V0); |
| 127 | |
| 128 | _jit_name(block->_jit, __func__); |
| 129 | lightrec_lock_reg(reg_cache, _jit, rs); |
| 130 | lightrec_emit_end_of_block(block, op, pc, rs, 0, op->r.rd, pc + 8, true); |
| 131 | } |
| 132 | |
| 133 | static void rec_J(const struct block *block, const struct opcode *op, u32 pc) |
| 134 | { |
| 135 | _jit_name(block->_jit, __func__); |
| 136 | lightrec_emit_end_of_block(block, op, pc, -1, |
| 137 | (pc & 0xf0000000) | (op->j.imm << 2), 31, 0, true); |
| 138 | } |
| 139 | |
| 140 | static void rec_JAL(const struct block *block, const struct opcode *op, u32 pc) |
| 141 | { |
| 142 | _jit_name(block->_jit, __func__); |
| 143 | lightrec_emit_end_of_block(block, op, pc, -1, |
| 144 | (pc & 0xf0000000) | (op->j.imm << 2), |
| 145 | 31, pc + 8, true); |
| 146 | } |
| 147 | |
| 148 | static void rec_b(const struct block *block, const struct opcode *op, u32 pc, |
| 149 | jit_code_t code, u32 link, bool unconditional, bool bz) |
| 150 | { |
| 151 | struct regcache *reg_cache = block->state->reg_cache; |
| 152 | struct native_register *regs_backup; |
| 153 | jit_state_t *_jit = block->_jit; |
| 154 | struct lightrec_branch *branch; |
| 155 | jit_node_t *addr; |
| 156 | u8 link_reg; |
| 157 | u32 offset, cycles = block->state->cycles; |
| 158 | bool is_forward = (s16)op->i.imm >= -1; |
| 159 | |
| 160 | jit_note(__FILE__, __LINE__); |
| 161 | |
| 162 | if (!(op->flags & LIGHTREC_NO_DS)) |
| 163 | cycles += lightrec_cycles_of_opcode(op->next->c); |
| 164 | |
| 165 | block->state->cycles = 0; |
| 166 | |
| 167 | if (cycles) |
| 168 | jit_subi(LIGHTREC_REG_CYCLE, LIGHTREC_REG_CYCLE, cycles); |
| 169 | |
| 170 | if (!unconditional) { |
| 171 | u8 rs = lightrec_alloc_reg_in_ext(reg_cache, _jit, op->i.rs), |
| 172 | rt = bz ? 0 : lightrec_alloc_reg_in_ext(reg_cache, |
| 173 | _jit, op->i.rt); |
| 174 | |
| 175 | /* Generate the branch opcode */ |
| 176 | addr = jit_new_node_pww(code, NULL, rs, rt); |
| 177 | |
| 178 | lightrec_free_regs(reg_cache); |
| 179 | regs_backup = lightrec_regcache_enter_branch(reg_cache); |
| 180 | } |
| 181 | |
| 182 | if (op->flags & LIGHTREC_LOCAL_BRANCH) { |
| 183 | if (op->next && !(op->flags & LIGHTREC_NO_DS)) { |
| 184 | /* Recompile the delay slot */ |
| 185 | if (op->next->opcode) |
| 186 | lightrec_rec_opcode(block, op->next, pc + 4); |
| 187 | } |
| 188 | |
| 189 | if (link) { |
| 190 | /* Update the $ra register */ |
| 191 | link_reg = lightrec_alloc_reg_out(reg_cache, _jit, 31); |
| 192 | jit_movi(link_reg, link); |
| 193 | lightrec_free_reg(reg_cache, link_reg); |
| 194 | } |
| 195 | |
| 196 | /* Store back remaining registers */ |
| 197 | lightrec_storeback_regs(reg_cache, _jit); |
| 198 | |
| 199 | offset = op->offset + 1 + (s16)op->i.imm; |
| 200 | pr_debug("Adding local branch to offset 0x%x\n", offset << 2); |
| 201 | branch = &block->state->local_branches[ |
| 202 | block->state->nb_local_branches++]; |
| 203 | |
| 204 | branch->target = offset; |
| 205 | if (is_forward) |
| 206 | branch->branch = jit_jmpi(); |
| 207 | else |
| 208 | branch->branch = jit_bgti(LIGHTREC_REG_CYCLE, 0); |
| 209 | } |
| 210 | |
| 211 | if (!(op->flags & LIGHTREC_LOCAL_BRANCH) || !is_forward) { |
| 212 | lightrec_emit_end_of_block(block, op, pc, -1, |
| 213 | pc + 4 + ((s16)op->i.imm << 2), |
| 214 | 31, link, false); |
| 215 | } |
| 216 | |
| 217 | if (!unconditional) { |
| 218 | jit_patch(addr); |
| 219 | lightrec_regcache_leave_branch(reg_cache, regs_backup); |
| 220 | |
| 221 | if (bz && link) { |
| 222 | /* Update the $ra register */ |
| 223 | link_reg = lightrec_alloc_reg_out_ext(reg_cache, |
| 224 | _jit, 31); |
| 225 | jit_movi(link_reg, (s32)link); |
| 226 | lightrec_free_reg(reg_cache, link_reg); |
| 227 | } |
| 228 | |
| 229 | if (!(op->flags & LIGHTREC_NO_DS) && op->next->opcode) |
| 230 | lightrec_rec_opcode(block, op->next, pc + 4); |
| 231 | } |
| 232 | } |
| 233 | |
| 234 | static void rec_BNE(const struct block *block, const struct opcode *op, u32 pc) |
| 235 | { |
| 236 | _jit_name(block->_jit, __func__); |
| 237 | rec_b(block, op, pc, jit_code_beqr, 0, false, false); |
| 238 | } |
| 239 | |
| 240 | static void rec_BEQ(const struct block *block, const struct opcode *op, u32 pc) |
| 241 | { |
| 242 | _jit_name(block->_jit, __func__); |
| 243 | rec_b(block, op, pc, jit_code_bner, 0, |
| 244 | op->i.rs == op->i.rt, false); |
| 245 | } |
| 246 | |
| 247 | static void rec_BLEZ(const struct block *block, const struct opcode *op, u32 pc) |
| 248 | { |
| 249 | _jit_name(block->_jit, __func__); |
| 250 | rec_b(block, op, pc, jit_code_bgti, 0, op->i.rs == 0, true); |
| 251 | } |
| 252 | |
| 253 | static void rec_BGTZ(const struct block *block, const struct opcode *op, u32 pc) |
| 254 | { |
| 255 | _jit_name(block->_jit, __func__); |
| 256 | rec_b(block, op, pc, jit_code_blei, 0, false, true); |
| 257 | } |
| 258 | |
| 259 | static void rec_regimm_BLTZ(const struct block *block, |
| 260 | const struct opcode *op, u32 pc) |
| 261 | { |
| 262 | _jit_name(block->_jit, __func__); |
| 263 | rec_b(block, op, pc, jit_code_bgei, 0, false, true); |
| 264 | } |
| 265 | |
| 266 | static void rec_regimm_BLTZAL(const struct block *block, |
| 267 | const struct opcode *op, u32 pc) |
| 268 | { |
| 269 | _jit_name(block->_jit, __func__); |
| 270 | rec_b(block, op, pc, jit_code_bgei, pc + 8, false, true); |
| 271 | } |
| 272 | |
| 273 | static void rec_regimm_BGEZ(const struct block *block, |
| 274 | const struct opcode *op, u32 pc) |
| 275 | { |
| 276 | _jit_name(block->_jit, __func__); |
| 277 | rec_b(block, op, pc, jit_code_blti, 0, !op->i.rs, true); |
| 278 | } |
| 279 | |
| 280 | static void rec_regimm_BGEZAL(const struct block *block, |
| 281 | const struct opcode *op, u32 pc) |
| 282 | { |
| 283 | _jit_name(block->_jit, __func__); |
| 284 | rec_b(block, op, pc, jit_code_blti, pc + 8, !op->i.rs, true); |
| 285 | } |
| 286 | |
| 287 | static void rec_alu_imm(const struct block *block, const struct opcode *op, |
| 288 | jit_code_t code, bool sign_extend) |
| 289 | { |
| 290 | struct regcache *reg_cache = block->state->reg_cache; |
| 291 | jit_state_t *_jit = block->_jit; |
| 292 | u8 rs, rt; |
| 293 | |
| 294 | jit_note(__FILE__, __LINE__); |
| 295 | rs = lightrec_alloc_reg_in_ext(reg_cache, _jit, op->i.rs); |
| 296 | rt = lightrec_alloc_reg_out_ext(reg_cache, _jit, op->i.rt); |
| 297 | |
| 298 | if (sign_extend) |
| 299 | jit_new_node_www(code, rt, rs, (s32)(s16) op->i.imm); |
| 300 | else |
| 301 | jit_new_node_www(code, rt, rs, (u32)(u16) op->i.imm); |
| 302 | |
| 303 | lightrec_free_reg(reg_cache, rs); |
| 304 | lightrec_free_reg(reg_cache, rt); |
| 305 | } |
| 306 | |
| 307 | static void rec_alu_special(const struct block *block, const struct opcode *op, |
| 308 | jit_code_t code, bool out_ext) |
| 309 | { |
| 310 | struct regcache *reg_cache = block->state->reg_cache; |
| 311 | jit_state_t *_jit = block->_jit; |
| 312 | u8 rd, rt, rs; |
| 313 | |
| 314 | jit_note(__FILE__, __LINE__); |
| 315 | rs = lightrec_alloc_reg_in_ext(reg_cache, _jit, op->r.rs); |
| 316 | rt = lightrec_alloc_reg_in_ext(reg_cache, _jit, op->r.rt); |
| 317 | |
| 318 | if (out_ext) |
| 319 | rd = lightrec_alloc_reg_out_ext(reg_cache, _jit, op->r.rd); |
| 320 | else |
| 321 | rd = lightrec_alloc_reg_out(reg_cache, _jit, op->r.rd); |
| 322 | |
| 323 | jit_new_node_www(code, rd, rs, rt); |
| 324 | |
| 325 | lightrec_free_reg(reg_cache, rs); |
| 326 | lightrec_free_reg(reg_cache, rt); |
| 327 | lightrec_free_reg(reg_cache, rd); |
| 328 | } |
| 329 | |
| 330 | static void rec_alu_shiftv(const struct block *block, |
| 331 | const struct opcode *op, jit_code_t code) |
| 332 | { |
| 333 | struct regcache *reg_cache = block->state->reg_cache; |
| 334 | jit_state_t *_jit = block->_jit; |
| 335 | u8 rd, rt, rs, temp; |
| 336 | |
| 337 | jit_note(__FILE__, __LINE__); |
| 338 | rs = lightrec_alloc_reg_in(reg_cache, _jit, op->r.rs); |
| 339 | temp = lightrec_alloc_reg_temp(reg_cache, _jit); |
| 340 | |
| 341 | if (code == jit_code_rshr) { |
| 342 | rt = lightrec_alloc_reg_in_ext(reg_cache, _jit, op->r.rt); |
| 343 | rd = lightrec_alloc_reg_out_ext(reg_cache, _jit, op->r.rd); |
| 344 | } else { |
| 345 | rt = lightrec_alloc_reg_in(reg_cache, _jit, op->r.rt); |
| 346 | rd = lightrec_alloc_reg_out(reg_cache, _jit, op->r.rd); |
| 347 | } |
| 348 | |
| 349 | jit_andi(temp, rs, 0x1f); |
| 350 | |
| 351 | #if __WORDSIZE == 64 |
| 352 | if (code == jit_code_rshr_u) { |
| 353 | jit_extr_ui(rd, rt); |
| 354 | jit_new_node_www(code, rd, rd, temp); |
| 355 | } |
| 356 | #endif |
| 357 | |
| 358 | if (__WORDSIZE == 32 || code != jit_code_rshr_u) |
| 359 | jit_new_node_www(code, rd, rt, temp); |
| 360 | |
| 361 | lightrec_free_reg(reg_cache, rs); |
| 362 | lightrec_free_reg(reg_cache, temp); |
| 363 | lightrec_free_reg(reg_cache, rt); |
| 364 | lightrec_free_reg(reg_cache, rd); |
| 365 | } |
| 366 | |
| 367 | static void rec_ADDIU(const struct block *block, |
| 368 | const struct opcode *op, u32 pc) |
| 369 | { |
| 370 | _jit_name(block->_jit, __func__); |
| 371 | rec_alu_imm(block, op, jit_code_addi, true); |
| 372 | } |
| 373 | |
| 374 | static void rec_ADDI(const struct block *block, const struct opcode *op, u32 pc) |
| 375 | { |
| 376 | /* TODO: Handle the exception? */ |
| 377 | _jit_name(block->_jit, __func__); |
| 378 | rec_alu_imm(block, op, jit_code_addi, true); |
| 379 | } |
| 380 | |
| 381 | static void rec_SLTIU(const struct block *block, |
| 382 | const struct opcode *op, u32 pc) |
| 383 | { |
| 384 | _jit_name(block->_jit, __func__); |
| 385 | rec_alu_imm(block, op, jit_code_lti_u, true); |
| 386 | } |
| 387 | |
| 388 | static void rec_SLTI(const struct block *block, const struct opcode *op, u32 pc) |
| 389 | { |
| 390 | _jit_name(block->_jit, __func__); |
| 391 | rec_alu_imm(block, op, jit_code_lti, true); |
| 392 | } |
| 393 | |
| 394 | static void rec_ANDI(const struct block *block, const struct opcode *op, u32 pc) |
| 395 | { |
| 396 | struct regcache *reg_cache = block->state->reg_cache; |
| 397 | jit_state_t *_jit = block->_jit; |
| 398 | u8 rs, rt; |
| 399 | |
| 400 | _jit_name(block->_jit, __func__); |
| 401 | jit_note(__FILE__, __LINE__); |
| 402 | rs = lightrec_alloc_reg_in(reg_cache, _jit, op->i.rs); |
| 403 | rt = lightrec_alloc_reg_out_ext(reg_cache, _jit, op->i.rt); |
| 404 | |
| 405 | /* PSX code uses ANDI 0xff / ANDI 0xffff a lot, which are basically |
| 406 | * casts to uint8_t / uint16_t. */ |
| 407 | if (op->i.imm == 0xff) |
| 408 | jit_extr_uc(rt, rs); |
| 409 | else if (op->i.imm == 0xffff) |
| 410 | jit_extr_us(rt, rs); |
| 411 | else |
| 412 | jit_andi(rt, rs, (u32)(u16) op->i.imm); |
| 413 | |
| 414 | lightrec_free_reg(reg_cache, rs); |
| 415 | lightrec_free_reg(reg_cache, rt); |
| 416 | } |
| 417 | |
| 418 | static void rec_ORI(const struct block *block, const struct opcode *op, u32 pc) |
| 419 | { |
| 420 | _jit_name(block->_jit, __func__); |
| 421 | rec_alu_imm(block, op, jit_code_ori, false); |
| 422 | } |
| 423 | |
| 424 | static void rec_XORI(const struct block *block, const struct opcode *op, u32 pc) |
| 425 | { |
| 426 | _jit_name(block->_jit, __func__); |
| 427 | rec_alu_imm(block, op, jit_code_xori, false); |
| 428 | } |
| 429 | |
| 430 | static void rec_LUI(const struct block *block, const struct opcode *op, u32 pc) |
| 431 | { |
| 432 | struct regcache *reg_cache = block->state->reg_cache; |
| 433 | jit_state_t *_jit = block->_jit; |
| 434 | u8 rt; |
| 435 | |
| 436 | jit_name(__func__); |
| 437 | jit_note(__FILE__, __LINE__); |
| 438 | rt = lightrec_alloc_reg_out_ext(reg_cache, _jit, op->i.rt); |
| 439 | |
| 440 | jit_movi(rt, (s32)(op->i.imm << 16)); |
| 441 | |
| 442 | lightrec_free_reg(reg_cache, rt); |
| 443 | } |
| 444 | |
| 445 | static void rec_special_ADDU(const struct block *block, |
| 446 | const struct opcode *op, u32 pc) |
| 447 | { |
| 448 | _jit_name(block->_jit, __func__); |
| 449 | rec_alu_special(block, op, jit_code_addr, false); |
| 450 | } |
| 451 | |
| 452 | static void rec_special_ADD(const struct block *block, |
| 453 | const struct opcode *op, u32 pc) |
| 454 | { |
| 455 | /* TODO: Handle the exception? */ |
| 456 | _jit_name(block->_jit, __func__); |
| 457 | rec_alu_special(block, op, jit_code_addr, false); |
| 458 | } |
| 459 | |
| 460 | static void rec_special_SUBU(const struct block *block, |
| 461 | const struct opcode *op, u32 pc) |
| 462 | { |
| 463 | _jit_name(block->_jit, __func__); |
| 464 | rec_alu_special(block, op, jit_code_subr, false); |
| 465 | } |
| 466 | |
| 467 | static void rec_special_SUB(const struct block *block, |
| 468 | const struct opcode *op, u32 pc) |
| 469 | { |
| 470 | /* TODO: Handle the exception? */ |
| 471 | _jit_name(block->_jit, __func__); |
| 472 | rec_alu_special(block, op, jit_code_subr, false); |
| 473 | } |
| 474 | |
| 475 | static void rec_special_AND(const struct block *block, |
| 476 | const struct opcode *op, u32 pc) |
| 477 | { |
| 478 | _jit_name(block->_jit, __func__); |
| 479 | rec_alu_special(block, op, jit_code_andr, false); |
| 480 | } |
| 481 | |
| 482 | static void rec_special_OR(const struct block *block, |
| 483 | const struct opcode *op, u32 pc) |
| 484 | { |
| 485 | _jit_name(block->_jit, __func__); |
| 486 | rec_alu_special(block, op, jit_code_orr, false); |
| 487 | } |
| 488 | |
| 489 | static void rec_special_XOR(const struct block *block, |
| 490 | const struct opcode *op, u32 pc) |
| 491 | { |
| 492 | _jit_name(block->_jit, __func__); |
| 493 | rec_alu_special(block, op, jit_code_xorr, false); |
| 494 | } |
| 495 | |
| 496 | static void rec_special_NOR(const struct block *block, |
| 497 | const struct opcode *op, u32 pc) |
| 498 | { |
| 499 | struct regcache *reg_cache = block->state->reg_cache; |
| 500 | jit_state_t *_jit = block->_jit; |
| 501 | u8 rd; |
| 502 | |
| 503 | jit_name(__func__); |
| 504 | rec_alu_special(block, op, jit_code_orr, false); |
| 505 | rd = lightrec_alloc_reg_out(reg_cache, _jit, op->r.rd); |
| 506 | |
| 507 | jit_comr(rd, rd); |
| 508 | |
| 509 | lightrec_free_reg(reg_cache, rd); |
| 510 | } |
| 511 | |
| 512 | static void rec_special_SLTU(const struct block *block, |
| 513 | const struct opcode *op, u32 pc) |
| 514 | { |
| 515 | _jit_name(block->_jit, __func__); |
| 516 | rec_alu_special(block, op, jit_code_ltr_u, true); |
| 517 | } |
| 518 | |
| 519 | static void rec_special_SLT(const struct block *block, |
| 520 | const struct opcode *op, u32 pc) |
| 521 | { |
| 522 | _jit_name(block->_jit, __func__); |
| 523 | rec_alu_special(block, op, jit_code_ltr, true); |
| 524 | } |
| 525 | |
| 526 | static void rec_special_SLLV(const struct block *block, |
| 527 | const struct opcode *op, u32 pc) |
| 528 | { |
| 529 | _jit_name(block->_jit, __func__); |
| 530 | rec_alu_shiftv(block, op, jit_code_lshr); |
| 531 | } |
| 532 | |
| 533 | static void rec_special_SRLV(const struct block *block, |
| 534 | const struct opcode *op, u32 pc) |
| 535 | { |
| 536 | _jit_name(block->_jit, __func__); |
| 537 | rec_alu_shiftv(block, op, jit_code_rshr_u); |
| 538 | } |
| 539 | |
| 540 | static void rec_special_SRAV(const struct block *block, |
| 541 | const struct opcode *op, u32 pc) |
| 542 | { |
| 543 | _jit_name(block->_jit, __func__); |
| 544 | rec_alu_shiftv(block, op, jit_code_rshr); |
| 545 | } |
| 546 | |
| 547 | static void rec_alu_shift(const struct block *block, |
| 548 | const struct opcode *op, jit_code_t code) |
| 549 | { |
| 550 | struct regcache *reg_cache = block->state->reg_cache; |
| 551 | jit_state_t *_jit = block->_jit; |
| 552 | u8 rd, rt; |
| 553 | |
| 554 | jit_note(__FILE__, __LINE__); |
| 555 | |
| 556 | if (code == jit_code_rshi) { |
| 557 | rt = lightrec_alloc_reg_in_ext(reg_cache, _jit, op->r.rt); |
| 558 | rd = lightrec_alloc_reg_out_ext(reg_cache, _jit, op->r.rd); |
| 559 | } else { |
| 560 | rt = lightrec_alloc_reg_in(reg_cache, _jit, op->r.rt); |
| 561 | rd = lightrec_alloc_reg_out(reg_cache, _jit, op->r.rd); |
| 562 | } |
| 563 | |
| 564 | #if __WORDSIZE == 64 |
| 565 | if (code == jit_code_rshi_u) { |
| 566 | jit_extr_ui(rd, rt); |
| 567 | jit_new_node_www(code, rd, rd, op->r.imm); |
| 568 | } |
| 569 | #endif |
| 570 | if (__WORDSIZE == 32 || code != jit_code_rshi_u) |
| 571 | jit_new_node_www(code, rd, rt, op->r.imm); |
| 572 | |
| 573 | lightrec_free_reg(reg_cache, rt); |
| 574 | lightrec_free_reg(reg_cache, rd); |
| 575 | } |
| 576 | |
| 577 | static void rec_special_SLL(const struct block *block, |
| 578 | const struct opcode *op, u32 pc) |
| 579 | { |
| 580 | _jit_name(block->_jit, __func__); |
| 581 | rec_alu_shift(block, op, jit_code_lshi); |
| 582 | } |
| 583 | |
| 584 | static void rec_special_SRL(const struct block *block, |
| 585 | const struct opcode *op, u32 pc) |
| 586 | { |
| 587 | _jit_name(block->_jit, __func__); |
| 588 | rec_alu_shift(block, op, jit_code_rshi_u); |
| 589 | } |
| 590 | |
| 591 | static void rec_special_SRA(const struct block *block, |
| 592 | const struct opcode *op, u32 pc) |
| 593 | { |
| 594 | _jit_name(block->_jit, __func__); |
| 595 | rec_alu_shift(block, op, jit_code_rshi); |
| 596 | } |
| 597 | |
| 598 | static void rec_alu_mult(const struct block *block, |
| 599 | const struct opcode *op, bool is_signed) |
| 600 | { |
| 601 | struct regcache *reg_cache = block->state->reg_cache; |
| 602 | jit_state_t *_jit = block->_jit; |
| 603 | u8 lo, hi, rs, rt; |
| 604 | |
| 605 | jit_note(__FILE__, __LINE__); |
| 606 | |
| 607 | lo = lightrec_alloc_reg_out(reg_cache, _jit, REG_LO); |
| 608 | if (!(op->flags & LIGHTREC_MULT32)) |
| 609 | hi = lightrec_alloc_reg_out_ext(reg_cache, _jit, REG_HI); |
| 610 | else if (__WORDSIZE == 64) |
| 611 | hi = lightrec_alloc_reg_temp(reg_cache, _jit); |
| 612 | |
| 613 | if (__WORDSIZE == 32 || !is_signed) { |
| 614 | rs = lightrec_alloc_reg_in(reg_cache, _jit, op->r.rs); |
| 615 | rt = lightrec_alloc_reg_in(reg_cache, _jit, op->r.rt); |
| 616 | } else { |
| 617 | rs = lightrec_alloc_reg_in_ext(reg_cache, _jit, op->r.rs); |
| 618 | rt = lightrec_alloc_reg_in_ext(reg_cache, _jit, op->r.rt); |
| 619 | } |
| 620 | |
| 621 | #if __WORDSIZE == 32 |
| 622 | /* On 32-bit systems, do a 32*32->64 bit operation, or a 32*32->32 bit |
| 623 | * operation if the MULT was detected a 32-bit only. */ |
| 624 | if (!(op->flags & LIGHTREC_MULT32)) { |
| 625 | if (is_signed) |
| 626 | jit_qmulr(lo, hi, rs, rt); |
| 627 | else |
| 628 | jit_qmulr_u(lo, hi, rs, rt); |
| 629 | } else { |
| 630 | jit_mulr(lo, rs, rt); |
| 631 | } |
| 632 | #else |
| 633 | /* On 64-bit systems, do a 64*64->64 bit operation. |
| 634 | * The input registers must be 32 bits, so we first sign-extend (if |
| 635 | * mult) or clear (if multu) the input registers. */ |
| 636 | if (is_signed) { |
| 637 | jit_mulr(lo, rs, rt); |
| 638 | } else { |
| 639 | jit_extr_ui(lo, rt); |
| 640 | jit_extr_ui(hi, rs); |
| 641 | jit_mulr(lo, hi, lo); |
| 642 | } |
| 643 | |
| 644 | /* The 64-bit output value is in $lo, store the upper 32 bits in $hi */ |
| 645 | if (!(op->flags & LIGHTREC_MULT32)) |
| 646 | jit_rshi(hi, lo, 32); |
| 647 | #endif |
| 648 | |
| 649 | lightrec_free_reg(reg_cache, rs); |
| 650 | lightrec_free_reg(reg_cache, rt); |
| 651 | lightrec_free_reg(reg_cache, lo); |
| 652 | if (__WORDSIZE == 64 || !(op->flags & LIGHTREC_MULT32)) |
| 653 | lightrec_free_reg(reg_cache, hi); |
| 654 | } |
| 655 | |
| 656 | static void rec_alu_div(const struct block *block, |
| 657 | const struct opcode *op, bool is_signed) |
| 658 | { |
| 659 | struct regcache *reg_cache = block->state->reg_cache; |
| 660 | jit_state_t *_jit = block->_jit; |
| 661 | jit_node_t *branch, *to_end; |
| 662 | u8 lo, hi, rs, rt; |
| 663 | |
| 664 | jit_note(__FILE__, __LINE__); |
| 665 | lo = lightrec_alloc_reg_out(reg_cache, _jit, REG_LO); |
| 666 | hi = lightrec_alloc_reg_out(reg_cache, _jit, REG_HI); |
| 667 | |
| 668 | if (__WORDSIZE == 32 || !is_signed) { |
| 669 | rs = lightrec_alloc_reg_in(reg_cache, _jit, op->r.rs); |
| 670 | rt = lightrec_alloc_reg_in(reg_cache, _jit, op->r.rt); |
| 671 | } else { |
| 672 | rs = lightrec_alloc_reg_in_ext(reg_cache, _jit, op->r.rs); |
| 673 | rt = lightrec_alloc_reg_in_ext(reg_cache, _jit, op->r.rt); |
| 674 | } |
| 675 | |
| 676 | /* Jump to special handler if dividing by zero */ |
| 677 | branch = jit_beqi(rt, 0); |
| 678 | |
| 679 | #if __WORDSIZE == 32 |
| 680 | if (is_signed) |
| 681 | jit_qdivr(lo, hi, rs, rt); |
| 682 | else |
| 683 | jit_qdivr_u(lo, hi, rs, rt); |
| 684 | #else |
| 685 | /* On 64-bit systems, the input registers must be 32 bits, so we first sign-extend |
| 686 | * (if div) or clear (if divu) the input registers. */ |
| 687 | if (is_signed) { |
| 688 | jit_qdivr(lo, hi, rs, rt); |
| 689 | } else { |
| 690 | jit_extr_ui(lo, rt); |
| 691 | jit_extr_ui(hi, rs); |
| 692 | jit_qdivr_u(lo, hi, hi, lo); |
| 693 | } |
| 694 | #endif |
| 695 | |
| 696 | /* Jump above the div-by-zero handler */ |
| 697 | to_end = jit_jmpi(); |
| 698 | |
| 699 | jit_patch(branch); |
| 700 | |
| 701 | if (is_signed) { |
| 702 | jit_lti(lo, rs, 0); |
| 703 | jit_lshi(lo, lo, 1); |
| 704 | jit_subi(lo, lo, 1); |
| 705 | } else { |
| 706 | jit_movi(lo, 0xffffffff); |
| 707 | } |
| 708 | |
| 709 | jit_movr(hi, rs); |
| 710 | |
| 711 | jit_patch(to_end); |
| 712 | |
| 713 | lightrec_free_reg(reg_cache, rs); |
| 714 | lightrec_free_reg(reg_cache, rt); |
| 715 | lightrec_free_reg(reg_cache, lo); |
| 716 | lightrec_free_reg(reg_cache, hi); |
| 717 | } |
| 718 | |
| 719 | static void rec_special_MULT(const struct block *block, |
| 720 | const struct opcode *op, u32 pc) |
| 721 | { |
| 722 | _jit_name(block->_jit, __func__); |
| 723 | rec_alu_mult(block, op, true); |
| 724 | } |
| 725 | |
| 726 | static void rec_special_MULTU(const struct block *block, |
| 727 | const struct opcode *op, u32 pc) |
| 728 | { |
| 729 | _jit_name(block->_jit, __func__); |
| 730 | rec_alu_mult(block, op, false); |
| 731 | } |
| 732 | |
| 733 | static void rec_special_DIV(const struct block *block, |
| 734 | const struct opcode *op, u32 pc) |
| 735 | { |
| 736 | _jit_name(block->_jit, __func__); |
| 737 | rec_alu_div(block, op, true); |
| 738 | } |
| 739 | |
| 740 | static void rec_special_DIVU(const struct block *block, |
| 741 | const struct opcode *op, u32 pc) |
| 742 | { |
| 743 | _jit_name(block->_jit, __func__); |
| 744 | rec_alu_div(block, op, false); |
| 745 | } |
| 746 | |
| 747 | static void rec_alu_mv_lo_hi(const struct block *block, u8 dst, u8 src) |
| 748 | { |
| 749 | struct regcache *reg_cache = block->state->reg_cache; |
| 750 | jit_state_t *_jit = block->_jit; |
| 751 | |
| 752 | jit_note(__FILE__, __LINE__); |
| 753 | src = lightrec_alloc_reg_in(reg_cache, _jit, src); |
| 754 | dst = lightrec_alloc_reg_out_ext(reg_cache, _jit, dst); |
| 755 | |
| 756 | #if __WORDSIZE == 32 |
| 757 | jit_movr(dst, src); |
| 758 | #else |
| 759 | jit_extr_i(dst, src); |
| 760 | #endif |
| 761 | |
| 762 | lightrec_free_reg(reg_cache, src); |
| 763 | lightrec_free_reg(reg_cache, dst); |
| 764 | } |
| 765 | |
| 766 | static void rec_special_MFHI(const struct block *block, |
| 767 | const struct opcode *op, u32 pc) |
| 768 | { |
| 769 | _jit_name(block->_jit, __func__); |
| 770 | rec_alu_mv_lo_hi(block, op->r.rd, REG_HI); |
| 771 | } |
| 772 | |
| 773 | static void rec_special_MTHI(const struct block *block, |
| 774 | const struct opcode *op, u32 pc) |
| 775 | { |
| 776 | _jit_name(block->_jit, __func__); |
| 777 | rec_alu_mv_lo_hi(block, REG_HI, op->r.rs); |
| 778 | } |
| 779 | |
| 780 | static void rec_special_MFLO(const struct block *block, |
| 781 | const struct opcode *op, u32 pc) |
| 782 | { |
| 783 | _jit_name(block->_jit, __func__); |
| 784 | rec_alu_mv_lo_hi(block, op->r.rd, REG_LO); |
| 785 | } |
| 786 | |
| 787 | static void rec_special_MTLO(const struct block *block, |
| 788 | const struct opcode *op, u32 pc) |
| 789 | { |
| 790 | _jit_name(block->_jit, __func__); |
| 791 | rec_alu_mv_lo_hi(block, REG_LO, op->r.rs); |
| 792 | } |
| 793 | |
| 794 | static void rec_io(const struct block *block, const struct opcode *op, |
| 795 | bool load_rt, bool read_rt) |
| 796 | { |
| 797 | struct regcache *reg_cache = block->state->reg_cache; |
| 798 | jit_state_t *_jit = block->_jit; |
| 799 | bool is_tagged = op->flags & (LIGHTREC_HW_IO | LIGHTREC_DIRECT_IO); |
| 800 | u32 offset; |
| 801 | u8 tmp, tmp2, tmp3; |
| 802 | |
| 803 | jit_note(__FILE__, __LINE__); |
| 804 | |
| 805 | tmp = lightrec_alloc_reg(reg_cache, _jit, JIT_R0); |
| 806 | |
| 807 | if (is_tagged) { |
| 808 | offset = offsetof(struct lightrec_state, rw_func); |
| 809 | } else { |
| 810 | tmp3 = lightrec_alloc_reg(reg_cache, _jit, JIT_R1); |
| 811 | offset = offsetof(struct lightrec_state, rw_generic_func); |
| 812 | } |
| 813 | |
| 814 | tmp2 = lightrec_alloc_reg_temp(reg_cache, _jit); |
| 815 | jit_ldxi(tmp2, LIGHTREC_REG_STATE, offset); |
| 816 | |
| 817 | lightrec_clean_reg_if_loaded(reg_cache, _jit, op->i.rs, false); |
| 818 | |
| 819 | if (read_rt && likely(op->i.rt)) |
| 820 | lightrec_clean_reg_if_loaded(reg_cache, _jit, op->i.rt, true); |
| 821 | else if (load_rt) |
| 822 | lightrec_clean_reg_if_loaded(reg_cache, _jit, op->i.rt, false); |
| 823 | |
| 824 | if (is_tagged) { |
| 825 | jit_movi(tmp, op->opcode); |
| 826 | } else { |
| 827 | jit_movi(tmp, (uintptr_t)op); |
| 828 | jit_movi(tmp3, (uintptr_t)block); |
| 829 | } |
| 830 | |
| 831 | jit_callr(tmp2); |
| 832 | |
| 833 | lightrec_free_reg(reg_cache, tmp); |
| 834 | lightrec_free_reg(reg_cache, tmp2); |
| 835 | if (!is_tagged) |
| 836 | lightrec_free_reg(reg_cache, tmp3); |
| 837 | lightrec_regcache_mark_live(reg_cache, _jit); |
| 838 | } |
| 839 | |
| 840 | static void rec_store_direct_no_invalidate(const struct block *block, |
| 841 | const struct opcode *op, |
| 842 | jit_code_t code) |
| 843 | { |
| 844 | struct lightrec_state *state = block->state; |
| 845 | struct regcache *reg_cache = state->reg_cache; |
| 846 | jit_state_t *_jit = block->_jit; |
| 847 | jit_node_t *to_not_ram, *to_end; |
| 848 | u8 tmp, tmp2, rs, rt; |
| 849 | s16 imm; |
| 850 | |
| 851 | jit_note(__FILE__, __LINE__); |
| 852 | rs = lightrec_alloc_reg_in(reg_cache, _jit, op->i.rs); |
| 853 | tmp = lightrec_alloc_reg_temp(reg_cache, _jit); |
| 854 | tmp2 = lightrec_alloc_reg_temp(reg_cache, _jit); |
| 855 | |
| 856 | /* Convert to KUNSEG and avoid RAM mirrors */ |
| 857 | if (state->mirrors_mapped) { |
| 858 | imm = (s16)op->i.imm; |
| 859 | jit_andi(tmp, rs, 0x1f800000 | (4 * RAM_SIZE - 1)); |
| 860 | } else if (op->i.imm) { |
| 861 | imm = 0; |
| 862 | jit_addi(tmp, rs, (s16)op->i.imm); |
| 863 | jit_andi(tmp, tmp, 0x1f800000 | (RAM_SIZE - 1)); |
| 864 | } else { |
| 865 | imm = 0; |
| 866 | jit_andi(tmp, rs, 0x1f800000 | (RAM_SIZE - 1)); |
| 867 | } |
| 868 | |
| 869 | lightrec_free_reg(reg_cache, rs); |
| 870 | |
| 871 | if (state->offset_ram != state->offset_scratch) { |
| 872 | to_not_ram = jit_bmsi(tmp, BIT(28)); |
| 873 | |
| 874 | jit_movi(tmp2, state->offset_ram); |
| 875 | |
| 876 | to_end = jit_jmpi(); |
| 877 | jit_patch(to_not_ram); |
| 878 | |
| 879 | jit_movi(tmp2, state->offset_scratch); |
| 880 | jit_patch(to_end); |
| 881 | } else if (state->offset_ram) { |
| 882 | jit_movi(tmp2, state->offset_ram); |
| 883 | } |
| 884 | |
| 885 | if (state->offset_ram || state->offset_scratch) |
| 886 | jit_addr(tmp, tmp, tmp2); |
| 887 | |
| 888 | lightrec_free_reg(reg_cache, tmp2); |
| 889 | |
| 890 | rt = lightrec_alloc_reg_in(reg_cache, _jit, op->i.rt); |
| 891 | jit_new_node_www(code, imm, tmp, rt); |
| 892 | |
| 893 | lightrec_free_reg(reg_cache, rt); |
| 894 | lightrec_free_reg(reg_cache, tmp); |
| 895 | } |
| 896 | |
| 897 | static void rec_store_direct(const struct block *block, const struct opcode *op, |
| 898 | jit_code_t code) |
| 899 | { |
| 900 | struct lightrec_state *state = block->state; |
| 901 | struct regcache *reg_cache = state->reg_cache; |
| 902 | jit_state_t *_jit = block->_jit; |
| 903 | jit_node_t *to_not_ram, *to_end; |
| 904 | u8 tmp, tmp2, tmp3, rs, rt; |
| 905 | |
| 906 | jit_note(__FILE__, __LINE__); |
| 907 | |
| 908 | rs = lightrec_alloc_reg_in(reg_cache, _jit, op->i.rs); |
| 909 | tmp2 = lightrec_alloc_reg_temp(reg_cache, _jit); |
| 910 | tmp3 = lightrec_alloc_reg_in(reg_cache, _jit, 0); |
| 911 | |
| 912 | /* Convert to KUNSEG and avoid RAM mirrors */ |
| 913 | if (op->i.imm) { |
| 914 | jit_addi(tmp2, rs, (s16)op->i.imm); |
| 915 | jit_andi(tmp2, tmp2, 0x1f800000 | (RAM_SIZE - 1)); |
| 916 | } else { |
| 917 | jit_andi(tmp2, rs, 0x1f800000 | (RAM_SIZE - 1)); |
| 918 | } |
| 919 | |
| 920 | lightrec_free_reg(reg_cache, rs); |
| 921 | tmp = lightrec_alloc_reg_temp(reg_cache, _jit); |
| 922 | |
| 923 | to_not_ram = jit_bgti(tmp2, RAM_SIZE); |
| 924 | |
| 925 | /* Compute the offset to the code LUT */ |
| 926 | jit_andi(tmp, tmp2, (RAM_SIZE - 1) & ~3); |
| 927 | #if __WORDSIZE == 64 |
| 928 | jit_lshi(tmp, tmp, 1); |
| 929 | #endif |
| 930 | jit_addr(tmp, LIGHTREC_REG_STATE, tmp); |
| 931 | |
| 932 | /* Write NULL to the code LUT to invalidate any block that's there */ |
| 933 | jit_stxi(offsetof(struct lightrec_state, code_lut), tmp, tmp3); |
| 934 | |
| 935 | if (state->offset_ram != state->offset_scratch) { |
| 936 | jit_movi(tmp, state->offset_ram); |
| 937 | |
| 938 | to_end = jit_jmpi(); |
| 939 | } |
| 940 | |
| 941 | jit_patch(to_not_ram); |
| 942 | |
| 943 | if (state->offset_ram || state->offset_scratch) |
| 944 | jit_movi(tmp, state->offset_scratch); |
| 945 | |
| 946 | if (state->offset_ram != state->offset_scratch) |
| 947 | jit_patch(to_end); |
| 948 | |
| 949 | if (state->offset_ram || state->offset_scratch) |
| 950 | jit_addr(tmp2, tmp2, tmp); |
| 951 | |
| 952 | lightrec_free_reg(reg_cache, tmp); |
| 953 | lightrec_free_reg(reg_cache, tmp3); |
| 954 | |
| 955 | rt = lightrec_alloc_reg_in(reg_cache, _jit, op->i.rt); |
| 956 | jit_new_node_www(code, 0, tmp2, rt); |
| 957 | |
| 958 | lightrec_free_reg(reg_cache, rt); |
| 959 | lightrec_free_reg(reg_cache, tmp2); |
| 960 | } |
| 961 | |
| 962 | static void rec_store(const struct block *block, const struct opcode *op, |
| 963 | jit_code_t code) |
| 964 | { |
| 965 | if (op->flags & LIGHTREC_NO_INVALIDATE) { |
| 966 | rec_store_direct_no_invalidate(block, op, code); |
| 967 | } else if (op->flags & LIGHTREC_DIRECT_IO) { |
| 968 | if (block->state->invalidate_from_dma_only) |
| 969 | rec_store_direct_no_invalidate(block, op, code); |
| 970 | else |
| 971 | rec_store_direct(block, op, code); |
| 972 | } else { |
| 973 | rec_io(block, op, true, false); |
| 974 | } |
| 975 | } |
| 976 | |
| 977 | static void rec_SB(const struct block *block, const struct opcode *op, u32 pc) |
| 978 | { |
| 979 | _jit_name(block->_jit, __func__); |
| 980 | rec_store(block, op, jit_code_stxi_c); |
| 981 | } |
| 982 | |
| 983 | static void rec_SH(const struct block *block, const struct opcode *op, u32 pc) |
| 984 | { |
| 985 | _jit_name(block->_jit, __func__); |
| 986 | rec_store(block, op, jit_code_stxi_s); |
| 987 | } |
| 988 | |
| 989 | static void rec_SW(const struct block *block, const struct opcode *op, u32 pc) |
| 990 | { |
| 991 | _jit_name(block->_jit, __func__); |
| 992 | rec_store(block, op, jit_code_stxi_i); |
| 993 | } |
| 994 | |
| 995 | static void rec_SWL(const struct block *block, const struct opcode *op, u32 pc) |
| 996 | { |
| 997 | _jit_name(block->_jit, __func__); |
| 998 | rec_io(block, op, true, false); |
| 999 | } |
| 1000 | |
| 1001 | static void rec_SWR(const struct block *block, const struct opcode *op, u32 pc) |
| 1002 | { |
| 1003 | _jit_name(block->_jit, __func__); |
| 1004 | rec_io(block, op, true, false); |
| 1005 | } |
| 1006 | |
| 1007 | static void rec_SWC2(const struct block *block, const struct opcode *op, u32 pc) |
| 1008 | { |
| 1009 | _jit_name(block->_jit, __func__); |
| 1010 | rec_io(block, op, false, false); |
| 1011 | } |
| 1012 | |
| 1013 | static void rec_load_direct(const struct block *block, const struct opcode *op, |
| 1014 | jit_code_t code) |
| 1015 | { |
| 1016 | struct lightrec_state *state = block->state; |
| 1017 | struct regcache *reg_cache = state->reg_cache; |
| 1018 | jit_state_t *_jit = block->_jit; |
| 1019 | jit_node_t *to_not_ram, *to_not_bios, *to_end, *to_end2; |
| 1020 | u8 tmp, rs, rt, addr_reg; |
| 1021 | s16 imm; |
| 1022 | |
| 1023 | if (!op->i.rt) |
| 1024 | return; |
| 1025 | |
| 1026 | jit_note(__FILE__, __LINE__); |
| 1027 | rs = lightrec_alloc_reg_in(reg_cache, _jit, op->i.rs); |
| 1028 | rt = lightrec_alloc_reg_out_ext(reg_cache, _jit, op->i.rt); |
| 1029 | |
| 1030 | if ((state->offset_ram == state->offset_bios && |
| 1031 | state->offset_ram == state->offset_scratch && |
| 1032 | state->mirrors_mapped) || !op->i.imm) { |
| 1033 | addr_reg = rs; |
| 1034 | imm = (s16)op->i.imm; |
| 1035 | } else { |
| 1036 | jit_addi(rt, rs, (s16)op->i.imm); |
| 1037 | addr_reg = rt; |
| 1038 | imm = 0; |
| 1039 | |
| 1040 | if (op->i.rs != op->i.rt) |
| 1041 | lightrec_free_reg(reg_cache, rs); |
| 1042 | } |
| 1043 | |
| 1044 | tmp = lightrec_alloc_reg_temp(reg_cache, _jit); |
| 1045 | |
| 1046 | if (state->offset_ram == state->offset_bios && |
| 1047 | state->offset_ram == state->offset_scratch) { |
| 1048 | if (!state->mirrors_mapped) { |
| 1049 | jit_andi(tmp, addr_reg, BIT(28)); |
| 1050 | jit_rshi_u(tmp, tmp, 28 - 22); |
| 1051 | jit_ori(tmp, tmp, 0x1f800000 | (RAM_SIZE - 1)); |
| 1052 | jit_andr(rt, addr_reg, tmp); |
| 1053 | } else { |
| 1054 | jit_andi(rt, addr_reg, 0x1fffffff); |
| 1055 | } |
| 1056 | |
| 1057 | if (state->offset_ram) |
| 1058 | jit_movi(tmp, state->offset_ram); |
| 1059 | } else { |
| 1060 | to_not_ram = jit_bmsi(addr_reg, BIT(28)); |
| 1061 | |
| 1062 | /* Convert to KUNSEG and avoid RAM mirrors */ |
| 1063 | jit_andi(rt, addr_reg, RAM_SIZE - 1); |
| 1064 | |
| 1065 | if (state->offset_ram) |
| 1066 | jit_movi(tmp, state->offset_ram); |
| 1067 | |
| 1068 | to_end = jit_jmpi(); |
| 1069 | |
| 1070 | jit_patch(to_not_ram); |
| 1071 | |
| 1072 | if (state->offset_bios != state->offset_scratch) |
| 1073 | to_not_bios = jit_bmci(addr_reg, BIT(22)); |
| 1074 | |
| 1075 | /* Convert to KUNSEG */ |
| 1076 | jit_andi(rt, addr_reg, 0x1fc00000 | (BIOS_SIZE - 1)); |
| 1077 | |
| 1078 | jit_movi(tmp, state->offset_bios); |
| 1079 | |
| 1080 | if (state->offset_bios != state->offset_scratch) { |
| 1081 | to_end2 = jit_jmpi(); |
| 1082 | |
| 1083 | jit_patch(to_not_bios); |
| 1084 | |
| 1085 | /* Convert to KUNSEG */ |
| 1086 | jit_andi(rt, addr_reg, 0x1f800fff); |
| 1087 | |
| 1088 | if (state->offset_scratch) |
| 1089 | jit_movi(tmp, state->offset_scratch); |
| 1090 | |
| 1091 | jit_patch(to_end2); |
| 1092 | } |
| 1093 | |
| 1094 | jit_patch(to_end); |
| 1095 | } |
| 1096 | |
| 1097 | if (state->offset_ram || state->offset_bios || state->offset_scratch) |
| 1098 | jit_addr(rt, rt, tmp); |
| 1099 | |
| 1100 | jit_new_node_www(code, rt, rt, imm); |
| 1101 | |
| 1102 | lightrec_free_reg(reg_cache, addr_reg); |
| 1103 | lightrec_free_reg(reg_cache, rt); |
| 1104 | lightrec_free_reg(reg_cache, tmp); |
| 1105 | } |
| 1106 | |
| 1107 | static void rec_load(const struct block *block, const struct opcode *op, |
| 1108 | jit_code_t code) |
| 1109 | { |
| 1110 | if (op->flags & LIGHTREC_DIRECT_IO) |
| 1111 | rec_load_direct(block, op, code); |
| 1112 | else |
| 1113 | rec_io(block, op, false, true); |
| 1114 | } |
| 1115 | |
| 1116 | static void rec_LB(const struct block *block, const struct opcode *op, u32 pc) |
| 1117 | { |
| 1118 | _jit_name(block->_jit, __func__); |
| 1119 | rec_load(block, op, jit_code_ldxi_c); |
| 1120 | } |
| 1121 | |
| 1122 | static void rec_LBU(const struct block *block, const struct opcode *op, u32 pc) |
| 1123 | { |
| 1124 | _jit_name(block->_jit, __func__); |
| 1125 | rec_load(block, op, jit_code_ldxi_uc); |
| 1126 | } |
| 1127 | |
| 1128 | static void rec_LH(const struct block *block, const struct opcode *op, u32 pc) |
| 1129 | { |
| 1130 | _jit_name(block->_jit, __func__); |
| 1131 | rec_load(block, op, jit_code_ldxi_s); |
| 1132 | } |
| 1133 | |
| 1134 | static void rec_LHU(const struct block *block, const struct opcode *op, u32 pc) |
| 1135 | { |
| 1136 | _jit_name(block->_jit, __func__); |
| 1137 | rec_load(block, op, jit_code_ldxi_us); |
| 1138 | } |
| 1139 | |
| 1140 | static void rec_LWL(const struct block *block, const struct opcode *op, u32 pc) |
| 1141 | { |
| 1142 | _jit_name(block->_jit, __func__); |
| 1143 | rec_io(block, op, true, true); |
| 1144 | } |
| 1145 | |
| 1146 | static void rec_LWR(const struct block *block, const struct opcode *op, u32 pc) |
| 1147 | { |
| 1148 | _jit_name(block->_jit, __func__); |
| 1149 | rec_io(block, op, true, true); |
| 1150 | } |
| 1151 | |
| 1152 | static void rec_LW(const struct block *block, const struct opcode *op, u32 pc) |
| 1153 | { |
| 1154 | _jit_name(block->_jit, __func__); |
| 1155 | rec_load(block, op, jit_code_ldxi_i); |
| 1156 | } |
| 1157 | |
| 1158 | static void rec_LWC2(const struct block *block, const struct opcode *op, u32 pc) |
| 1159 | { |
| 1160 | _jit_name(block->_jit, __func__); |
| 1161 | rec_io(block, op, false, false); |
| 1162 | } |
| 1163 | |
| 1164 | static void rec_break_syscall(const struct block *block, |
| 1165 | const struct opcode *op, u32 pc, bool is_break) |
| 1166 | { |
| 1167 | struct regcache *reg_cache = block->state->reg_cache; |
| 1168 | jit_state_t *_jit = block->_jit; |
| 1169 | u32 offset; |
| 1170 | u8 tmp; |
| 1171 | |
| 1172 | jit_note(__FILE__, __LINE__); |
| 1173 | |
| 1174 | if (is_break) |
| 1175 | offset = offsetof(struct lightrec_state, break_func); |
| 1176 | else |
| 1177 | offset = offsetof(struct lightrec_state, syscall_func); |
| 1178 | |
| 1179 | tmp = lightrec_alloc_reg_temp(reg_cache, _jit); |
| 1180 | jit_ldxi(tmp, LIGHTREC_REG_STATE, offset); |
| 1181 | jit_callr(tmp); |
| 1182 | lightrec_free_reg(reg_cache, tmp); |
| 1183 | |
| 1184 | lightrec_regcache_mark_live(reg_cache, _jit); |
| 1185 | |
| 1186 | /* TODO: the return address should be "pc - 4" if we're a delay slot */ |
| 1187 | lightrec_emit_end_of_block(block, op, pc, -1, pc, 31, 0, true); |
| 1188 | } |
| 1189 | |
| 1190 | static void rec_special_SYSCALL(const struct block *block, |
| 1191 | const struct opcode *op, u32 pc) |
| 1192 | { |
| 1193 | _jit_name(block->_jit, __func__); |
| 1194 | rec_break_syscall(block, op, pc, false); |
| 1195 | } |
| 1196 | |
| 1197 | static void rec_special_BREAK(const struct block *block, |
| 1198 | const struct opcode *op, u32 pc) |
| 1199 | { |
| 1200 | _jit_name(block->_jit, __func__); |
| 1201 | rec_break_syscall(block, op, pc, true); |
| 1202 | } |
| 1203 | |
| 1204 | static void rec_mfc(const struct block *block, const struct opcode *op) |
| 1205 | { |
| 1206 | u8 tmp, tmp2; |
| 1207 | struct lightrec_state *state = block->state; |
| 1208 | struct regcache *reg_cache = state->reg_cache; |
| 1209 | jit_state_t *_jit = block->_jit; |
| 1210 | |
| 1211 | jit_note(__FILE__, __LINE__); |
| 1212 | |
| 1213 | tmp = lightrec_alloc_reg(reg_cache, _jit, JIT_R0); |
| 1214 | tmp2 = lightrec_alloc_reg_temp(reg_cache, _jit); |
| 1215 | |
| 1216 | jit_ldxi(tmp2, LIGHTREC_REG_STATE, |
| 1217 | offsetof(struct lightrec_state, mfc_func)); |
| 1218 | |
| 1219 | lightrec_clean_reg_if_loaded(reg_cache, _jit, op->i.rt, true); |
| 1220 | |
| 1221 | jit_movi(tmp, op->opcode); |
| 1222 | jit_callr(tmp2); |
| 1223 | lightrec_free_reg(reg_cache, tmp); |
| 1224 | lightrec_free_reg(reg_cache, tmp2); |
| 1225 | |
| 1226 | lightrec_regcache_mark_live(reg_cache, _jit); |
| 1227 | } |
| 1228 | |
| 1229 | static void rec_mtc(const struct block *block, const struct opcode *op, u32 pc) |
| 1230 | { |
| 1231 | struct lightrec_state *state = block->state; |
| 1232 | struct regcache *reg_cache = state->reg_cache; |
| 1233 | jit_state_t *_jit = block->_jit; |
| 1234 | u8 tmp, tmp2; |
| 1235 | |
| 1236 | jit_note(__FILE__, __LINE__); |
| 1237 | |
| 1238 | tmp = lightrec_alloc_reg(reg_cache, _jit, JIT_R0); |
| 1239 | tmp2 = lightrec_alloc_reg_temp(reg_cache, _jit); |
| 1240 | jit_ldxi(tmp2, LIGHTREC_REG_STATE, |
| 1241 | offsetof(struct lightrec_state, mtc_func)); |
| 1242 | |
| 1243 | lightrec_clean_reg_if_loaded(reg_cache, _jit, op->i.rs, false); |
| 1244 | lightrec_clean_reg_if_loaded(reg_cache, _jit, op->i.rt, false); |
| 1245 | |
| 1246 | jit_movi(tmp, op->opcode); |
| 1247 | jit_callr(tmp2); |
| 1248 | lightrec_free_reg(reg_cache, tmp); |
| 1249 | lightrec_free_reg(reg_cache, tmp2); |
| 1250 | |
| 1251 | lightrec_regcache_mark_live(reg_cache, _jit); |
| 1252 | |
| 1253 | if (op->i.op == OP_CP0 && !(op->flags & LIGHTREC_NO_DS) && |
| 1254 | (op->r.rd == 12 || op->r.rd == 13)) |
| 1255 | lightrec_emit_end_of_block(block, op, pc, -1, pc + 4, 0, 0, true); |
| 1256 | } |
| 1257 | |
| 1258 | static void rec_cp0_MFC0(const struct block *block, |
| 1259 | const struct opcode *op, u32 pc) |
| 1260 | { |
| 1261 | _jit_name(block->_jit, __func__); |
| 1262 | rec_mfc(block, op); |
| 1263 | } |
| 1264 | |
| 1265 | static void rec_cp0_CFC0(const struct block *block, |
| 1266 | const struct opcode *op, u32 pc) |
| 1267 | { |
| 1268 | _jit_name(block->_jit, __func__); |
| 1269 | rec_mfc(block, op); |
| 1270 | } |
| 1271 | |
| 1272 | static void rec_cp0_MTC0(const struct block *block, |
| 1273 | const struct opcode *op, u32 pc) |
| 1274 | { |
| 1275 | _jit_name(block->_jit, __func__); |
| 1276 | rec_mtc(block, op, pc); |
| 1277 | } |
| 1278 | |
| 1279 | static void rec_cp0_CTC0(const struct block *block, |
| 1280 | const struct opcode *op, u32 pc) |
| 1281 | { |
| 1282 | _jit_name(block->_jit, __func__); |
| 1283 | rec_mtc(block, op, pc); |
| 1284 | } |
| 1285 | |
| 1286 | static void rec_cp2_basic_MFC2(const struct block *block, |
| 1287 | const struct opcode *op, u32 pc) |
| 1288 | { |
| 1289 | _jit_name(block->_jit, __func__); |
| 1290 | rec_mfc(block, op); |
| 1291 | } |
| 1292 | |
| 1293 | static void rec_cp2_basic_CFC2(const struct block *block, |
| 1294 | const struct opcode *op, u32 pc) |
| 1295 | { |
| 1296 | _jit_name(block->_jit, __func__); |
| 1297 | rec_mfc(block, op); |
| 1298 | } |
| 1299 | |
| 1300 | static void rec_cp2_basic_MTC2(const struct block *block, |
| 1301 | const struct opcode *op, u32 pc) |
| 1302 | { |
| 1303 | _jit_name(block->_jit, __func__); |
| 1304 | rec_mtc(block, op, pc); |
| 1305 | } |
| 1306 | |
| 1307 | static void rec_cp2_basic_CTC2(const struct block *block, |
| 1308 | const struct opcode *op, u32 pc) |
| 1309 | { |
| 1310 | _jit_name(block->_jit, __func__); |
| 1311 | rec_mtc(block, op, pc); |
| 1312 | } |
| 1313 | |
| 1314 | static void rec_cp0_RFE(const struct block *block, |
| 1315 | const struct opcode *op, u32 pc) |
| 1316 | { |
| 1317 | struct lightrec_state *state = block->state; |
| 1318 | jit_state_t *_jit = block->_jit; |
| 1319 | u8 tmp; |
| 1320 | |
| 1321 | jit_name(__func__); |
| 1322 | jit_note(__FILE__, __LINE__); |
| 1323 | |
| 1324 | tmp = lightrec_alloc_reg_temp(state->reg_cache, _jit); |
| 1325 | jit_ldxi(tmp, LIGHTREC_REG_STATE, |
| 1326 | offsetof(struct lightrec_state, rfe_func)); |
| 1327 | jit_callr(tmp); |
| 1328 | lightrec_free_reg(state->reg_cache, tmp); |
| 1329 | |
| 1330 | lightrec_regcache_mark_live(state->reg_cache, _jit); |
| 1331 | } |
| 1332 | |
| 1333 | static void rec_CP(const struct block *block, const struct opcode *op, u32 pc) |
| 1334 | { |
| 1335 | struct regcache *reg_cache = block->state->reg_cache; |
| 1336 | jit_state_t *_jit = block->_jit; |
| 1337 | u8 tmp, tmp2; |
| 1338 | |
| 1339 | jit_name(__func__); |
| 1340 | jit_note(__FILE__, __LINE__); |
| 1341 | |
| 1342 | tmp = lightrec_alloc_reg(reg_cache, _jit, JIT_R0); |
| 1343 | tmp2 = lightrec_alloc_reg_temp(reg_cache, _jit); |
| 1344 | |
| 1345 | jit_ldxi(tmp2, LIGHTREC_REG_STATE, |
| 1346 | offsetof(struct lightrec_state, cp_func)); |
| 1347 | |
| 1348 | jit_movi(tmp, op->opcode); |
| 1349 | jit_callr(tmp2); |
| 1350 | lightrec_free_reg(reg_cache, tmp); |
| 1351 | lightrec_free_reg(reg_cache, tmp2); |
| 1352 | |
| 1353 | lightrec_regcache_mark_live(reg_cache, _jit); |
| 1354 | } |
| 1355 | |
| 1356 | static void rec_meta_unload(const struct block *block, |
| 1357 | const struct opcode *op, u32 pc) |
| 1358 | { |
| 1359 | struct lightrec_state *state = block->state; |
| 1360 | struct regcache *reg_cache = state->reg_cache; |
| 1361 | jit_state_t *_jit = block->_jit; |
| 1362 | |
| 1363 | jit_name(__func__); |
| 1364 | jit_note(__FILE__, __LINE__); |
| 1365 | |
| 1366 | pr_debug("Unloading reg %s\n", lightrec_reg_name(op->i.rs)); |
| 1367 | lightrec_clean_reg_if_loaded(reg_cache, _jit, op->i.rs, true); |
| 1368 | } |
| 1369 | |
| 1370 | static void rec_meta_BEQZ(const struct block *block, |
| 1371 | const struct opcode *op, u32 pc) |
| 1372 | { |
| 1373 | _jit_name(block->_jit, __func__); |
| 1374 | rec_b(block, op, pc, jit_code_bnei, 0, false, true); |
| 1375 | } |
| 1376 | |
| 1377 | static void rec_meta_BNEZ(const struct block *block, |
| 1378 | const struct opcode *op, u32 pc) |
| 1379 | { |
| 1380 | _jit_name(block->_jit, __func__); |
| 1381 | rec_b(block, op, pc, jit_code_beqi, 0, false, true); |
| 1382 | } |
| 1383 | |
| 1384 | static void rec_meta_MOV(const struct block *block, |
| 1385 | const struct opcode *op, u32 pc) |
| 1386 | { |
| 1387 | struct lightrec_state *state = block->state; |
| 1388 | struct regcache *reg_cache = state->reg_cache; |
| 1389 | jit_state_t *_jit = block->_jit; |
| 1390 | u8 rs, rd; |
| 1391 | |
| 1392 | _jit_name(block->_jit, __func__); |
| 1393 | jit_note(__FILE__, __LINE__); |
| 1394 | rs = op->r.rs ? lightrec_alloc_reg_in(reg_cache, _jit, op->r.rs) : 0; |
| 1395 | rd = lightrec_alloc_reg_out_ext(reg_cache, _jit, op->r.rd); |
| 1396 | |
| 1397 | if (op->r.rs == 0) { |
| 1398 | jit_movi(rd, 0); |
| 1399 | } else { |
| 1400 | #if __WORDSIZE == 32 |
| 1401 | jit_movr(rd, rs); |
| 1402 | #else |
| 1403 | jit_extr_i(rd, rs); |
| 1404 | #endif |
| 1405 | } |
| 1406 | |
| 1407 | lightrec_free_reg(state->reg_cache, rs); |
| 1408 | lightrec_free_reg(state->reg_cache, rd); |
| 1409 | } |
| 1410 | |
| 1411 | static void rec_meta_sync(const struct block *block, |
| 1412 | const struct opcode *op, u32 pc) |
| 1413 | { |
| 1414 | struct lightrec_state *state = block->state; |
| 1415 | struct lightrec_branch_target *target; |
| 1416 | jit_state_t *_jit = block->_jit; |
| 1417 | |
| 1418 | jit_name(__func__); |
| 1419 | jit_note(__FILE__, __LINE__); |
| 1420 | |
| 1421 | jit_subi(LIGHTREC_REG_CYCLE, LIGHTREC_REG_CYCLE, state->cycles); |
| 1422 | state->cycles = 0; |
| 1423 | |
| 1424 | lightrec_storeback_regs(state->reg_cache, _jit); |
| 1425 | lightrec_regcache_reset(state->reg_cache); |
| 1426 | |
| 1427 | pr_debug("Adding branch target at offset 0x%x\n", |
| 1428 | op->offset << 2); |
| 1429 | target = &state->targets[state->nb_targets++]; |
| 1430 | target->offset = op->offset; |
| 1431 | target->label = jit_indirect(); |
| 1432 | } |
| 1433 | |
| 1434 | static const lightrec_rec_func_t rec_standard[64] = { |
| 1435 | [OP_SPECIAL] = rec_SPECIAL, |
| 1436 | [OP_REGIMM] = rec_REGIMM, |
| 1437 | [OP_J] = rec_J, |
| 1438 | [OP_JAL] = rec_JAL, |
| 1439 | [OP_BEQ] = rec_BEQ, |
| 1440 | [OP_BNE] = rec_BNE, |
| 1441 | [OP_BLEZ] = rec_BLEZ, |
| 1442 | [OP_BGTZ] = rec_BGTZ, |
| 1443 | [OP_ADDI] = rec_ADDI, |
| 1444 | [OP_ADDIU] = rec_ADDIU, |
| 1445 | [OP_SLTI] = rec_SLTI, |
| 1446 | [OP_SLTIU] = rec_SLTIU, |
| 1447 | [OP_ANDI] = rec_ANDI, |
| 1448 | [OP_ORI] = rec_ORI, |
| 1449 | [OP_XORI] = rec_XORI, |
| 1450 | [OP_LUI] = rec_LUI, |
| 1451 | [OP_CP0] = rec_CP0, |
| 1452 | [OP_CP2] = rec_CP2, |
| 1453 | [OP_LB] = rec_LB, |
| 1454 | [OP_LH] = rec_LH, |
| 1455 | [OP_LWL] = rec_LWL, |
| 1456 | [OP_LW] = rec_LW, |
| 1457 | [OP_LBU] = rec_LBU, |
| 1458 | [OP_LHU] = rec_LHU, |
| 1459 | [OP_LWR] = rec_LWR, |
| 1460 | [OP_SB] = rec_SB, |
| 1461 | [OP_SH] = rec_SH, |
| 1462 | [OP_SWL] = rec_SWL, |
| 1463 | [OP_SW] = rec_SW, |
| 1464 | [OP_SWR] = rec_SWR, |
| 1465 | [OP_LWC2] = rec_LWC2, |
| 1466 | [OP_SWC2] = rec_SWC2, |
| 1467 | |
| 1468 | [OP_META_REG_UNLOAD] = rec_meta_unload, |
| 1469 | [OP_META_BEQZ] = rec_meta_BEQZ, |
| 1470 | [OP_META_BNEZ] = rec_meta_BNEZ, |
| 1471 | [OP_META_MOV] = rec_meta_MOV, |
| 1472 | [OP_META_SYNC] = rec_meta_sync, |
| 1473 | }; |
| 1474 | |
| 1475 | static const lightrec_rec_func_t rec_special[64] = { |
| 1476 | [OP_SPECIAL_SLL] = rec_special_SLL, |
| 1477 | [OP_SPECIAL_SRL] = rec_special_SRL, |
| 1478 | [OP_SPECIAL_SRA] = rec_special_SRA, |
| 1479 | [OP_SPECIAL_SLLV] = rec_special_SLLV, |
| 1480 | [OP_SPECIAL_SRLV] = rec_special_SRLV, |
| 1481 | [OP_SPECIAL_SRAV] = rec_special_SRAV, |
| 1482 | [OP_SPECIAL_JR] = rec_special_JR, |
| 1483 | [OP_SPECIAL_JALR] = rec_special_JALR, |
| 1484 | [OP_SPECIAL_SYSCALL] = rec_special_SYSCALL, |
| 1485 | [OP_SPECIAL_BREAK] = rec_special_BREAK, |
| 1486 | [OP_SPECIAL_MFHI] = rec_special_MFHI, |
| 1487 | [OP_SPECIAL_MTHI] = rec_special_MTHI, |
| 1488 | [OP_SPECIAL_MFLO] = rec_special_MFLO, |
| 1489 | [OP_SPECIAL_MTLO] = rec_special_MTLO, |
| 1490 | [OP_SPECIAL_MULT] = rec_special_MULT, |
| 1491 | [OP_SPECIAL_MULTU] = rec_special_MULTU, |
| 1492 | [OP_SPECIAL_DIV] = rec_special_DIV, |
| 1493 | [OP_SPECIAL_DIVU] = rec_special_DIVU, |
| 1494 | [OP_SPECIAL_ADD] = rec_special_ADD, |
| 1495 | [OP_SPECIAL_ADDU] = rec_special_ADDU, |
| 1496 | [OP_SPECIAL_SUB] = rec_special_SUB, |
| 1497 | [OP_SPECIAL_SUBU] = rec_special_SUBU, |
| 1498 | [OP_SPECIAL_AND] = rec_special_AND, |
| 1499 | [OP_SPECIAL_OR] = rec_special_OR, |
| 1500 | [OP_SPECIAL_XOR] = rec_special_XOR, |
| 1501 | [OP_SPECIAL_NOR] = rec_special_NOR, |
| 1502 | [OP_SPECIAL_SLT] = rec_special_SLT, |
| 1503 | [OP_SPECIAL_SLTU] = rec_special_SLTU, |
| 1504 | }; |
| 1505 | |
| 1506 | static const lightrec_rec_func_t rec_regimm[64] = { |
| 1507 | [OP_REGIMM_BLTZ] = rec_regimm_BLTZ, |
| 1508 | [OP_REGIMM_BGEZ] = rec_regimm_BGEZ, |
| 1509 | [OP_REGIMM_BLTZAL] = rec_regimm_BLTZAL, |
| 1510 | [OP_REGIMM_BGEZAL] = rec_regimm_BGEZAL, |
| 1511 | }; |
| 1512 | |
| 1513 | static const lightrec_rec_func_t rec_cp0[64] = { |
| 1514 | [OP_CP0_MFC0] = rec_cp0_MFC0, |
| 1515 | [OP_CP0_CFC0] = rec_cp0_CFC0, |
| 1516 | [OP_CP0_MTC0] = rec_cp0_MTC0, |
| 1517 | [OP_CP0_CTC0] = rec_cp0_CTC0, |
| 1518 | [OP_CP0_RFE] = rec_cp0_RFE, |
| 1519 | }; |
| 1520 | |
| 1521 | static const lightrec_rec_func_t rec_cp2_basic[64] = { |
| 1522 | [OP_CP2_BASIC_MFC2] = rec_cp2_basic_MFC2, |
| 1523 | [OP_CP2_BASIC_CFC2] = rec_cp2_basic_CFC2, |
| 1524 | [OP_CP2_BASIC_MTC2] = rec_cp2_basic_MTC2, |
| 1525 | [OP_CP2_BASIC_CTC2] = rec_cp2_basic_CTC2, |
| 1526 | }; |
| 1527 | |
| 1528 | static void rec_SPECIAL(const struct block *block, |
| 1529 | const struct opcode *op, u32 pc) |
| 1530 | { |
| 1531 | lightrec_rec_func_t f = rec_special[op->r.op]; |
| 1532 | if (likely(f)) |
| 1533 | (*f)(block, op, pc); |
| 1534 | else |
| 1535 | unknown_opcode(block, op, pc); |
| 1536 | } |
| 1537 | |
| 1538 | static void rec_REGIMM(const struct block *block, |
| 1539 | const struct opcode *op, u32 pc) |
| 1540 | { |
| 1541 | lightrec_rec_func_t f = rec_regimm[op->r.rt]; |
| 1542 | if (likely(f)) |
| 1543 | (*f)(block, op, pc); |
| 1544 | else |
| 1545 | unknown_opcode(block, op, pc); |
| 1546 | } |
| 1547 | |
| 1548 | static void rec_CP0(const struct block *block, const struct opcode *op, u32 pc) |
| 1549 | { |
| 1550 | lightrec_rec_func_t f = rec_cp0[op->r.rs]; |
| 1551 | if (likely(f)) |
| 1552 | (*f)(block, op, pc); |
| 1553 | else |
| 1554 | rec_CP(block, op, pc); |
| 1555 | } |
| 1556 | |
| 1557 | static void rec_CP2(const struct block *block, const struct opcode *op, u32 pc) |
| 1558 | { |
| 1559 | if (op->r.op == OP_CP2_BASIC) { |
| 1560 | lightrec_rec_func_t f = rec_cp2_basic[op->r.rs]; |
| 1561 | if (likely(f)) { |
| 1562 | (*f)(block, op, pc); |
| 1563 | return; |
| 1564 | } |
| 1565 | } |
| 1566 | |
| 1567 | rec_CP(block, op, pc); |
| 1568 | } |
| 1569 | |
| 1570 | void lightrec_rec_opcode(const struct block *block, |
| 1571 | const struct opcode *op, u32 pc) |
| 1572 | { |
| 1573 | lightrec_rec_func_t f = rec_standard[op->i.op]; |
| 1574 | if (likely(f)) |
| 1575 | (*f)(block, op, pc); |
| 1576 | else |
| 1577 | unknown_opcode(block, op, pc); |
| 1578 | } |