Tristan Matthews | 0461646 | 2013-11-14 16:09:34 -0500 | [diff] [blame] | 1 | /* |
| 2 | * Stack-less Just-In-Time compiler |
| 3 | * |
| 4 | * Copyright 2009-2010 Zoltan Herczeg (hzmester@freemail.hu). All rights reserved. |
| 5 | * |
| 6 | * Redistribution and use in source and binary forms, with or without modification, are |
| 7 | * permitted provided that the following conditions are met: |
| 8 | * |
| 9 | * 1. Redistributions of source code must retain the above copyright notice, this list of |
| 10 | * conditions and the following disclaimer. |
| 11 | * |
| 12 | * 2. Redistributions in binary form must reproduce the above copyright notice, this list |
| 13 | * of conditions and the following disclaimer in the documentation and/or other materials |
| 14 | * provided with the distribution. |
| 15 | * |
| 16 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) AND CONTRIBUTORS ``AS IS'' AND ANY |
| 17 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 18 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT |
| 19 | * SHALL THE COPYRIGHT HOLDER(S) OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 20 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED |
| 21 | * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
| 22 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 23 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
| 24 | * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 25 | */ |
| 26 | |
| 27 | SLJIT_API_FUNC_ATTRIBUTE SLJIT_CONST char* sljit_get_platform_name() |
| 28 | { |
| 29 | #if (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7) |
| 30 | return "arm-v7"; |
| 31 | #elif (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) |
| 32 | return "arm-v5"; |
| 33 | #else |
| 34 | #error "Internal error: Unknown ARM architecture" |
| 35 | #endif |
| 36 | } |
| 37 | |
| 38 | /* Last register + 1. */ |
| 39 | #define TMP_REG1 (SLJIT_NO_REGISTERS + 1) |
| 40 | #define TMP_REG2 (SLJIT_NO_REGISTERS + 2) |
| 41 | #define TMP_REG3 (SLJIT_NO_REGISTERS + 3) |
| 42 | #define TMP_PC (SLJIT_NO_REGISTERS + 4) |
| 43 | |
| 44 | #define TMP_FREG1 (SLJIT_FLOAT_REG4 + 1) |
| 45 | #define TMP_FREG2 (SLJIT_FLOAT_REG4 + 2) |
| 46 | |
| 47 | /* In ARM instruction words. |
| 48 | Cache lines are usually 32 byte aligned. */ |
| 49 | #define CONST_POOL_ALIGNMENT 8 |
| 50 | #define CONST_POOL_EMPTY 0xffffffff |
| 51 | |
| 52 | #define ALIGN_INSTRUCTION(ptr) \ |
| 53 | (sljit_uw*)(((sljit_uw)(ptr) + (CONST_POOL_ALIGNMENT * sizeof(sljit_uw)) - 1) & ~((CONST_POOL_ALIGNMENT * sizeof(sljit_uw)) - 1)) |
| 54 | #define MAX_DIFFERENCE(max_diff) \ |
| 55 | (((max_diff) / (int)sizeof(sljit_uw)) - (CONST_POOL_ALIGNMENT - 1)) |
| 56 | |
| 57 | /* See sljit_emit_enter if you want to change them. */ |
| 58 | static SLJIT_CONST sljit_ub reg_map[SLJIT_NO_REGISTERS + 5] = { |
| 59 | 0, 0, 1, 2, 10, 11, 4, 5, 6, 7, 8, 13, 3, 12, 14, 15 |
| 60 | }; |
| 61 | |
| 62 | #define RM(rm) (reg_map[rm]) |
| 63 | #define RD(rd) (reg_map[rd] << 12) |
| 64 | #define RN(rn) (reg_map[rn] << 16) |
| 65 | |
| 66 | /* --------------------------------------------------------------------- */ |
| 67 | /* Instrucion forms */ |
| 68 | /* --------------------------------------------------------------------- */ |
| 69 | |
| 70 | /* The instruction includes the AL condition. |
| 71 | INST_NAME - CONDITIONAL remove this flag. */ |
| 72 | #define COND_MASK 0xf0000000 |
| 73 | #define CONDITIONAL 0xe0000000 |
| 74 | #define PUSH_POOL 0xff000000 |
| 75 | |
| 76 | /* DP - Data Processing instruction (use with EMIT_DATA_PROCESS_INS). */ |
| 77 | #define ADC_DP 0x5 |
| 78 | #define ADD_DP 0x4 |
| 79 | #define AND_DP 0x0 |
| 80 | #define B 0xea000000 |
| 81 | #define BIC_DP 0xe |
| 82 | #define BL 0xeb000000 |
| 83 | #define BLX 0xe12fff30 |
| 84 | #define BX 0xe12fff10 |
| 85 | #define CLZ 0xe16f0f10 |
| 86 | #define CMP_DP 0xa |
| 87 | #define DEBUGGER 0xe1200070 |
| 88 | #define EOR_DP 0x1 |
| 89 | #define MOV_DP 0xd |
| 90 | #define MUL 0xe0000090 |
| 91 | #define MVN_DP 0xf |
| 92 | #define NOP 0xe1a00000 |
| 93 | #define ORR_DP 0xc |
| 94 | #define PUSH 0xe92d0000 |
| 95 | #define POP 0xe8bd0000 |
| 96 | #define RSB_DP 0x3 |
| 97 | #define RSC_DP 0x7 |
| 98 | #define SBC_DP 0x6 |
| 99 | #define SMULL 0xe0c00090 |
| 100 | #define SUB_DP 0x2 |
| 101 | #define VABS_F64 0xeeb00bc0 |
| 102 | #define VADD_F64 0xee300b00 |
| 103 | #define VCMP_F64 0xeeb40b40 |
| 104 | #define VDIV_F64 0xee800b00 |
| 105 | #define VMOV_F64 0xeeb00b40 |
| 106 | #define VMRS 0xeef1fa10 |
| 107 | #define VMUL_F64 0xee200b00 |
| 108 | #define VNEG_F64 0xeeb10b40 |
| 109 | #define VSTR 0xed000b00 |
| 110 | #define VSUB_F64 0xee300b40 |
| 111 | |
| 112 | #if (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7) |
| 113 | /* Arm v7 specific instructions. */ |
| 114 | #define MOVW 0xe3000000 |
| 115 | #define MOVT 0xe3400000 |
| 116 | #define SXTB 0xe6af0070 |
| 117 | #define SXTH 0xe6bf0070 |
| 118 | #define UXTB 0xe6ef0070 |
| 119 | #define UXTH 0xe6ff0070 |
| 120 | #endif |
| 121 | |
| 122 | #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) |
| 123 | |
| 124 | static int push_cpool(struct sljit_compiler *compiler) |
| 125 | { |
| 126 | /* Pushing the constant pool into the instruction stream. */ |
| 127 | sljit_uw* inst; |
| 128 | sljit_uw* cpool_ptr; |
| 129 | sljit_uw* cpool_end; |
| 130 | int i; |
| 131 | |
| 132 | /* The label could point the address after the constant pool. */ |
| 133 | if (compiler->last_label && compiler->last_label->size == compiler->size) |
| 134 | compiler->last_label->size += compiler->cpool_fill + (CONST_POOL_ALIGNMENT - 1) + 1; |
| 135 | |
| 136 | SLJIT_ASSERT(compiler->cpool_fill > 0 && compiler->cpool_fill <= CPOOL_SIZE); |
| 137 | inst = (sljit_uw*)ensure_buf(compiler, sizeof(sljit_uw)); |
| 138 | FAIL_IF(!inst); |
| 139 | compiler->size++; |
| 140 | *inst = 0xff000000 | compiler->cpool_fill; |
| 141 | |
| 142 | for (i = 0; i < CONST_POOL_ALIGNMENT - 1; i++) { |
| 143 | inst = (sljit_uw*)ensure_buf(compiler, sizeof(sljit_uw)); |
| 144 | FAIL_IF(!inst); |
| 145 | compiler->size++; |
| 146 | *inst = 0; |
| 147 | } |
| 148 | |
| 149 | cpool_ptr = compiler->cpool; |
| 150 | cpool_end = cpool_ptr + compiler->cpool_fill; |
| 151 | while (cpool_ptr < cpool_end) { |
| 152 | inst = (sljit_uw*)ensure_buf(compiler, sizeof(sljit_uw)); |
| 153 | FAIL_IF(!inst); |
| 154 | compiler->size++; |
| 155 | *inst = *cpool_ptr++; |
| 156 | } |
| 157 | compiler->cpool_diff = CONST_POOL_EMPTY; |
| 158 | compiler->cpool_fill = 0; |
| 159 | return SLJIT_SUCCESS; |
| 160 | } |
| 161 | |
| 162 | static int push_inst(struct sljit_compiler *compiler, sljit_uw inst) |
| 163 | { |
| 164 | sljit_uw* ptr; |
| 165 | |
| 166 | if (SLJIT_UNLIKELY(compiler->cpool_diff != CONST_POOL_EMPTY && compiler->size - compiler->cpool_diff >= MAX_DIFFERENCE(4092))) |
| 167 | FAIL_IF(push_cpool(compiler)); |
| 168 | |
| 169 | ptr = (sljit_uw*)ensure_buf(compiler, sizeof(sljit_uw)); |
| 170 | FAIL_IF(!ptr); |
| 171 | compiler->size++; |
| 172 | *ptr = inst; |
| 173 | return SLJIT_SUCCESS; |
| 174 | } |
| 175 | |
| 176 | static int push_inst_with_literal(struct sljit_compiler *compiler, sljit_uw inst, sljit_uw literal) |
| 177 | { |
| 178 | sljit_uw* ptr; |
| 179 | sljit_uw cpool_index = CPOOL_SIZE; |
| 180 | sljit_uw* cpool_ptr; |
| 181 | sljit_uw* cpool_end; |
| 182 | sljit_ub* cpool_unique_ptr; |
| 183 | |
| 184 | if (SLJIT_UNLIKELY(compiler->cpool_diff != CONST_POOL_EMPTY && compiler->size - compiler->cpool_diff >= MAX_DIFFERENCE(4092))) |
| 185 | FAIL_IF(push_cpool(compiler)); |
| 186 | else if (compiler->cpool_fill > 0) { |
| 187 | cpool_ptr = compiler->cpool; |
| 188 | cpool_end = cpool_ptr + compiler->cpool_fill; |
| 189 | cpool_unique_ptr = compiler->cpool_unique; |
| 190 | do { |
| 191 | if ((*cpool_ptr == literal) && !(*cpool_unique_ptr)) { |
| 192 | cpool_index = cpool_ptr - compiler->cpool; |
| 193 | break; |
| 194 | } |
| 195 | cpool_ptr++; |
| 196 | cpool_unique_ptr++; |
| 197 | } while (cpool_ptr < cpool_end); |
| 198 | } |
| 199 | |
| 200 | if (cpool_index == CPOOL_SIZE) { |
| 201 | /* Must allocate a new entry in the literal pool. */ |
| 202 | if (compiler->cpool_fill < CPOOL_SIZE) { |
| 203 | cpool_index = compiler->cpool_fill; |
| 204 | compiler->cpool_fill++; |
| 205 | } |
| 206 | else { |
| 207 | FAIL_IF(push_cpool(compiler)); |
| 208 | cpool_index = 0; |
| 209 | compiler->cpool_fill = 1; |
| 210 | } |
| 211 | } |
| 212 | |
| 213 | SLJIT_ASSERT((inst & 0xfff) == 0); |
| 214 | ptr = (sljit_uw*)ensure_buf(compiler, sizeof(sljit_uw)); |
| 215 | FAIL_IF(!ptr); |
| 216 | compiler->size++; |
| 217 | *ptr = inst | cpool_index; |
| 218 | |
| 219 | compiler->cpool[cpool_index] = literal; |
| 220 | compiler->cpool_unique[cpool_index] = 0; |
| 221 | if (compiler->cpool_diff == CONST_POOL_EMPTY) |
| 222 | compiler->cpool_diff = compiler->size; |
| 223 | return SLJIT_SUCCESS; |
| 224 | } |
| 225 | |
| 226 | static int push_inst_with_unique_literal(struct sljit_compiler *compiler, sljit_uw inst, sljit_uw literal) |
| 227 | { |
| 228 | sljit_uw* ptr; |
| 229 | if (SLJIT_UNLIKELY((compiler->cpool_diff != CONST_POOL_EMPTY && compiler->size - compiler->cpool_diff >= MAX_DIFFERENCE(4092)) || compiler->cpool_fill >= CPOOL_SIZE)) |
| 230 | FAIL_IF(push_cpool(compiler)); |
| 231 | |
| 232 | SLJIT_ASSERT(compiler->cpool_fill < CPOOL_SIZE && (inst & 0xfff) == 0); |
| 233 | ptr = (sljit_uw*)ensure_buf(compiler, sizeof(sljit_uw)); |
| 234 | FAIL_IF(!ptr); |
| 235 | compiler->size++; |
| 236 | *ptr = inst | compiler->cpool_fill; |
| 237 | |
| 238 | compiler->cpool[compiler->cpool_fill] = literal; |
| 239 | compiler->cpool_unique[compiler->cpool_fill] = 1; |
| 240 | compiler->cpool_fill++; |
| 241 | if (compiler->cpool_diff == CONST_POOL_EMPTY) |
| 242 | compiler->cpool_diff = compiler->size; |
| 243 | return SLJIT_SUCCESS; |
| 244 | } |
| 245 | |
| 246 | static SLJIT_INLINE int prepare_blx(struct sljit_compiler *compiler) |
| 247 | { |
| 248 | /* Place for at least two instruction (doesn't matter whether the first has a literal). */ |
| 249 | if (SLJIT_UNLIKELY(compiler->cpool_diff != CONST_POOL_EMPTY && compiler->size - compiler->cpool_diff >= MAX_DIFFERENCE(4088))) |
| 250 | return push_cpool(compiler); |
| 251 | return SLJIT_SUCCESS; |
| 252 | } |
| 253 | |
| 254 | static SLJIT_INLINE int emit_blx(struct sljit_compiler *compiler) |
| 255 | { |
| 256 | /* Must follow tightly the previous instruction (to be able to convert it to bl instruction). */ |
| 257 | SLJIT_ASSERT(compiler->cpool_diff == CONST_POOL_EMPTY || compiler->size - compiler->cpool_diff < MAX_DIFFERENCE(4092)); |
| 258 | return push_inst(compiler, BLX | RM(TMP_REG1)); |
| 259 | } |
| 260 | |
| 261 | static sljit_uw patch_pc_relative_loads(sljit_uw *last_pc_patch, sljit_uw *code_ptr, sljit_uw* const_pool, sljit_uw cpool_size) |
| 262 | { |
| 263 | sljit_uw diff; |
| 264 | sljit_uw ind; |
| 265 | sljit_uw counter = 0; |
| 266 | sljit_uw* clear_const_pool = const_pool; |
| 267 | sljit_uw* clear_const_pool_end = const_pool + cpool_size; |
| 268 | |
| 269 | SLJIT_ASSERT(const_pool - code_ptr <= CONST_POOL_ALIGNMENT); |
| 270 | /* Set unused flag for all literals in the constant pool. |
| 271 | I.e.: unused literals can belong to branches, which can be encoded as B or BL. |
| 272 | We can "compress" the constant pool by discarding these literals. */ |
| 273 | while (clear_const_pool < clear_const_pool_end) |
| 274 | *clear_const_pool++ = (sljit_uw)(-1); |
| 275 | |
| 276 | while (last_pc_patch < code_ptr) { |
| 277 | /* Data transfer instruction with Rn == r15. */ |
| 278 | if ((*last_pc_patch & 0x0c0f0000) == 0x040f0000) { |
| 279 | diff = const_pool - last_pc_patch; |
| 280 | ind = (*last_pc_patch) & 0xfff; |
| 281 | |
| 282 | /* Must be a load instruction with immediate offset. */ |
| 283 | SLJIT_ASSERT(ind < cpool_size && !(*last_pc_patch & (1 << 25)) && (*last_pc_patch & (1 << 20))); |
| 284 | if ((int)const_pool[ind] < 0) { |
| 285 | const_pool[ind] = counter; |
| 286 | ind = counter; |
| 287 | counter++; |
| 288 | } |
| 289 | else |
| 290 | ind = const_pool[ind]; |
| 291 | |
| 292 | SLJIT_ASSERT(diff >= 1); |
| 293 | if (diff >= 2 || ind > 0) { |
| 294 | diff = (diff + ind - 2) << 2; |
| 295 | SLJIT_ASSERT(diff <= 0xfff); |
| 296 | *last_pc_patch = (*last_pc_patch & ~0xfff) | diff; |
| 297 | } |
| 298 | else |
| 299 | *last_pc_patch = (*last_pc_patch & ~(0xfff | (1 << 23))) | 0x004; |
| 300 | } |
| 301 | last_pc_patch++; |
| 302 | } |
| 303 | return counter; |
| 304 | } |
| 305 | |
| 306 | /* In some rare ocasions we may need future patches. The probability is close to 0 in practice. */ |
| 307 | struct future_patch { |
| 308 | struct future_patch* next; |
| 309 | int index; |
| 310 | int value; |
| 311 | }; |
| 312 | |
| 313 | static SLJIT_INLINE int resolve_const_pool_index(struct future_patch **first_patch, sljit_uw cpool_current_index, sljit_uw *cpool_start_address, sljit_uw *buf_ptr) |
| 314 | { |
| 315 | int value; |
| 316 | struct future_patch *curr_patch, *prev_patch; |
| 317 | |
| 318 | /* Using the values generated by patch_pc_relative_loads. */ |
| 319 | if (!*first_patch) |
| 320 | value = (int)cpool_start_address[cpool_current_index]; |
| 321 | else { |
| 322 | curr_patch = *first_patch; |
| 323 | prev_patch = 0; |
| 324 | while (1) { |
| 325 | if (!curr_patch) { |
| 326 | value = (int)cpool_start_address[cpool_current_index]; |
| 327 | break; |
| 328 | } |
| 329 | if ((sljit_uw)curr_patch->index == cpool_current_index) { |
| 330 | value = curr_patch->value; |
| 331 | if (prev_patch) |
| 332 | prev_patch->next = curr_patch->next; |
| 333 | else |
| 334 | *first_patch = curr_patch->next; |
| 335 | SLJIT_FREE(curr_patch); |
| 336 | break; |
| 337 | } |
| 338 | prev_patch = curr_patch; |
| 339 | curr_patch = curr_patch->next; |
| 340 | } |
| 341 | } |
| 342 | |
| 343 | if (value >= 0) { |
| 344 | if ((sljit_uw)value > cpool_current_index) { |
| 345 | curr_patch = (struct future_patch*)SLJIT_MALLOC(sizeof(struct future_patch)); |
| 346 | if (!curr_patch) { |
| 347 | while (*first_patch) { |
| 348 | curr_patch = *first_patch; |
| 349 | *first_patch = (*first_patch)->next; |
| 350 | SLJIT_FREE(curr_patch); |
| 351 | } |
| 352 | return SLJIT_ERR_ALLOC_FAILED; |
| 353 | } |
| 354 | curr_patch->next = *first_patch; |
| 355 | curr_patch->index = value; |
| 356 | curr_patch->value = cpool_start_address[value]; |
| 357 | *first_patch = curr_patch; |
| 358 | } |
| 359 | cpool_start_address[value] = *buf_ptr; |
| 360 | } |
| 361 | return SLJIT_SUCCESS; |
| 362 | } |
| 363 | |
| 364 | #else |
| 365 | |
| 366 | static int push_inst(struct sljit_compiler *compiler, sljit_uw inst) |
| 367 | { |
| 368 | sljit_uw* ptr; |
| 369 | |
| 370 | ptr = (sljit_uw*)ensure_buf(compiler, sizeof(sljit_uw)); |
| 371 | FAIL_IF(!ptr); |
| 372 | compiler->size++; |
| 373 | *ptr = inst; |
| 374 | return SLJIT_SUCCESS; |
| 375 | } |
| 376 | |
| 377 | static SLJIT_INLINE int emit_imm(struct sljit_compiler *compiler, int reg, sljit_w imm) |
| 378 | { |
| 379 | FAIL_IF(push_inst(compiler, MOVW | RD(reg) | ((imm << 4) & 0xf0000) | (imm & 0xfff))); |
| 380 | return push_inst(compiler, MOVT | RD(reg) | ((imm >> 12) & 0xf0000) | ((imm >> 16) & 0xfff)); |
| 381 | } |
| 382 | |
| 383 | #endif |
| 384 | |
| 385 | static SLJIT_INLINE int detect_jump_type(struct sljit_jump *jump, sljit_uw *code_ptr, sljit_uw *code) |
| 386 | { |
| 387 | sljit_w diff; |
| 388 | |
| 389 | if (jump->flags & SLJIT_REWRITABLE_JUMP) |
| 390 | return 0; |
| 391 | |
| 392 | #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) |
| 393 | if (jump->flags & IS_BL) |
| 394 | code_ptr--; |
| 395 | |
| 396 | if (jump->flags & JUMP_ADDR) |
| 397 | diff = ((sljit_w)jump->u.target - (sljit_w)(code_ptr + 2)); |
| 398 | else { |
| 399 | SLJIT_ASSERT(jump->flags & JUMP_LABEL); |
| 400 | diff = ((sljit_w)(code + jump->u.label->size) - (sljit_w)(code_ptr + 2)); |
| 401 | } |
| 402 | |
| 403 | /* Branch to Thumb code has not been optimized yet. */ |
| 404 | if (diff & 0x3) |
| 405 | return 0; |
| 406 | |
| 407 | diff >>= 2; |
| 408 | if (jump->flags & IS_BL) { |
| 409 | if (diff <= 0x01ffffff && diff >= -0x02000000) { |
| 410 | *code_ptr = (BL - CONDITIONAL) | (*(code_ptr + 1) & COND_MASK); |
| 411 | jump->flags |= PATCH_B; |
| 412 | return 1; |
| 413 | } |
| 414 | } |
| 415 | else { |
| 416 | if (diff <= 0x01ffffff && diff >= -0x02000000) { |
| 417 | *code_ptr = (B - CONDITIONAL) | (*code_ptr & COND_MASK); |
| 418 | jump->flags |= PATCH_B; |
| 419 | } |
| 420 | } |
| 421 | #else |
| 422 | if (jump->flags & JUMP_ADDR) |
| 423 | diff = ((sljit_w)jump->u.target - (sljit_w)code_ptr); |
| 424 | else { |
| 425 | SLJIT_ASSERT(jump->flags & JUMP_LABEL); |
| 426 | diff = ((sljit_w)(code + jump->u.label->size) - (sljit_w)code_ptr); |
| 427 | } |
| 428 | |
| 429 | /* Branch to Thumb code has not been optimized yet. */ |
| 430 | if (diff & 0x3) |
| 431 | return 0; |
| 432 | |
| 433 | diff >>= 2; |
| 434 | if (diff <= 0x01ffffff && diff >= -0x02000000) { |
| 435 | code_ptr -= 2; |
| 436 | *code_ptr = ((jump->flags & IS_BL) ? (BL - CONDITIONAL) : (B - CONDITIONAL)) | (code_ptr[2] & COND_MASK); |
| 437 | jump->flags |= PATCH_B; |
| 438 | return 1; |
| 439 | } |
| 440 | #endif |
| 441 | return 0; |
| 442 | } |
| 443 | |
| 444 | static SLJIT_INLINE void inline_set_jump_addr(sljit_uw addr, sljit_uw new_addr, int flush) |
| 445 | { |
| 446 | #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) |
| 447 | sljit_uw *ptr = (sljit_uw*)addr; |
| 448 | sljit_uw *inst = (sljit_uw*)ptr[0]; |
| 449 | sljit_uw mov_pc = ptr[1]; |
| 450 | int bl = (mov_pc & 0x0000f000) != RD(TMP_PC); |
| 451 | sljit_w diff = (sljit_w)(((sljit_w)new_addr - (sljit_w)(inst + 2)) >> 2); |
| 452 | |
| 453 | if (diff <= 0x7fffff && diff >= -0x800000) { |
| 454 | /* Turn to branch. */ |
| 455 | if (!bl) { |
| 456 | inst[0] = (mov_pc & COND_MASK) | (B - CONDITIONAL) | (diff & 0xffffff); |
| 457 | if (flush) { |
| 458 | SLJIT_CACHE_FLUSH(inst, inst + 1); |
| 459 | } |
| 460 | } else { |
| 461 | inst[0] = (mov_pc & COND_MASK) | (BL - CONDITIONAL) | (diff & 0xffffff); |
| 462 | inst[1] = NOP; |
| 463 | if (flush) { |
| 464 | SLJIT_CACHE_FLUSH(inst, inst + 2); |
| 465 | } |
| 466 | } |
| 467 | } else { |
| 468 | /* Get the position of the constant. */ |
| 469 | if (mov_pc & (1 << 23)) |
| 470 | ptr = inst + ((mov_pc & 0xfff) >> 2) + 2; |
| 471 | else |
| 472 | ptr = inst + 1; |
| 473 | |
| 474 | if (*inst != mov_pc) { |
| 475 | inst[0] = mov_pc; |
| 476 | if (!bl) { |
| 477 | if (flush) { |
| 478 | SLJIT_CACHE_FLUSH(inst, inst + 1); |
| 479 | } |
| 480 | } else { |
| 481 | inst[1] = BLX | RM(TMP_REG1); |
| 482 | if (flush) { |
| 483 | SLJIT_CACHE_FLUSH(inst, inst + 2); |
| 484 | } |
| 485 | } |
| 486 | } |
| 487 | *ptr = new_addr; |
| 488 | } |
| 489 | #else |
| 490 | sljit_uw *inst = (sljit_uw*)addr; |
| 491 | SLJIT_ASSERT((inst[0] & 0xfff00000) == MOVW && (inst[1] & 0xfff00000) == MOVT); |
| 492 | inst[0] = MOVW | (inst[0] & 0xf000) | ((new_addr << 4) & 0xf0000) | (new_addr & 0xfff); |
| 493 | inst[1] = MOVT | (inst[1] & 0xf000) | ((new_addr >> 12) & 0xf0000) | ((new_addr >> 16) & 0xfff); |
| 494 | if (flush) { |
| 495 | SLJIT_CACHE_FLUSH(inst, inst + 2); |
| 496 | } |
| 497 | #endif |
| 498 | } |
| 499 | |
| 500 | static sljit_uw get_immediate(sljit_uw imm); |
| 501 | |
| 502 | static SLJIT_INLINE void inline_set_const(sljit_uw addr, sljit_w new_constant, int flush) |
| 503 | { |
| 504 | #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) |
| 505 | sljit_uw *ptr = (sljit_uw*)addr; |
| 506 | sljit_uw *inst = (sljit_uw*)ptr[0]; |
| 507 | sljit_uw ldr_literal = ptr[1]; |
| 508 | sljit_uw src2; |
| 509 | |
| 510 | src2 = get_immediate(new_constant); |
| 511 | if (src2) { |
| 512 | *inst = 0xe3a00000 | (ldr_literal & 0xf000) | src2; |
| 513 | if (flush) { |
| 514 | SLJIT_CACHE_FLUSH(inst, inst + 1); |
| 515 | } |
| 516 | return; |
| 517 | } |
| 518 | |
| 519 | src2 = get_immediate(~new_constant); |
| 520 | if (src2) { |
| 521 | *inst = 0xe3e00000 | (ldr_literal & 0xf000) | src2; |
| 522 | if (flush) { |
| 523 | SLJIT_CACHE_FLUSH(inst, inst + 1); |
| 524 | } |
| 525 | return; |
| 526 | } |
| 527 | |
| 528 | if (ldr_literal & (1 << 23)) |
| 529 | ptr = inst + ((ldr_literal & 0xfff) >> 2) + 2; |
| 530 | else |
| 531 | ptr = inst + 1; |
| 532 | |
| 533 | if (*inst != ldr_literal) { |
| 534 | *inst = ldr_literal; |
| 535 | if (flush) { |
| 536 | SLJIT_CACHE_FLUSH(inst, inst + 1); |
| 537 | } |
| 538 | } |
| 539 | *ptr = new_constant; |
| 540 | #else |
| 541 | sljit_uw *inst = (sljit_uw*)addr; |
| 542 | SLJIT_ASSERT((inst[0] & 0xfff00000) == MOVW && (inst[1] & 0xfff00000) == MOVT); |
| 543 | inst[0] = MOVW | (inst[0] & 0xf000) | ((new_constant << 4) & 0xf0000) | (new_constant & 0xfff); |
| 544 | inst[1] = MOVT | (inst[1] & 0xf000) | ((new_constant >> 12) & 0xf0000) | ((new_constant >> 16) & 0xfff); |
| 545 | if (flush) { |
| 546 | SLJIT_CACHE_FLUSH(inst, inst + 2); |
| 547 | } |
| 548 | #endif |
| 549 | } |
| 550 | |
| 551 | SLJIT_API_FUNC_ATTRIBUTE void* sljit_generate_code(struct sljit_compiler *compiler) |
| 552 | { |
| 553 | struct sljit_memory_fragment *buf; |
| 554 | sljit_uw *code; |
| 555 | sljit_uw *code_ptr; |
| 556 | sljit_uw *buf_ptr; |
| 557 | sljit_uw *buf_end; |
| 558 | sljit_uw size; |
| 559 | sljit_uw word_count; |
| 560 | #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) |
| 561 | sljit_uw cpool_size; |
| 562 | sljit_uw cpool_skip_alignment; |
| 563 | sljit_uw cpool_current_index; |
| 564 | sljit_uw *cpool_start_address; |
| 565 | sljit_uw *last_pc_patch; |
| 566 | struct future_patch *first_patch; |
| 567 | #endif |
| 568 | |
| 569 | struct sljit_label *label; |
| 570 | struct sljit_jump *jump; |
| 571 | struct sljit_const *const_; |
| 572 | |
| 573 | CHECK_ERROR_PTR(); |
| 574 | check_sljit_generate_code(compiler); |
| 575 | reverse_buf(compiler); |
| 576 | |
| 577 | /* Second code generation pass. */ |
| 578 | #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) |
| 579 | size = compiler->size + (compiler->patches << 1); |
| 580 | if (compiler->cpool_fill > 0) |
| 581 | size += compiler->cpool_fill + CONST_POOL_ALIGNMENT - 1; |
| 582 | #else |
| 583 | size = compiler->size; |
| 584 | #endif |
| 585 | code = (sljit_uw*)SLJIT_MALLOC_EXEC(size * sizeof(sljit_uw)); |
| 586 | PTR_FAIL_WITH_EXEC_IF(code); |
| 587 | buf = compiler->buf; |
| 588 | |
| 589 | #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) |
| 590 | cpool_size = 0; |
| 591 | cpool_skip_alignment = 0; |
| 592 | cpool_current_index = 0; |
| 593 | cpool_start_address = NULL; |
| 594 | first_patch = NULL; |
| 595 | last_pc_patch = code; |
| 596 | #endif |
| 597 | |
| 598 | code_ptr = code; |
| 599 | word_count = 0; |
| 600 | |
| 601 | label = compiler->labels; |
| 602 | jump = compiler->jumps; |
| 603 | const_ = compiler->consts; |
| 604 | |
| 605 | if (label && label->size == 0) { |
| 606 | label->addr = (sljit_uw)code; |
| 607 | label->size = 0; |
| 608 | label = label->next; |
| 609 | } |
| 610 | |
| 611 | do { |
| 612 | buf_ptr = (sljit_uw*)buf->memory; |
| 613 | buf_end = buf_ptr + (buf->used_size >> 2); |
| 614 | do { |
| 615 | word_count++; |
| 616 | #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) |
| 617 | if (cpool_size > 0) { |
| 618 | if (cpool_skip_alignment > 0) { |
| 619 | buf_ptr++; |
| 620 | cpool_skip_alignment--; |
| 621 | } |
| 622 | else { |
| 623 | if (SLJIT_UNLIKELY(resolve_const_pool_index(&first_patch, cpool_current_index, cpool_start_address, buf_ptr))) { |
| 624 | SLJIT_FREE_EXEC(code); |
| 625 | compiler->error = SLJIT_ERR_ALLOC_FAILED; |
| 626 | return NULL; |
| 627 | } |
| 628 | buf_ptr++; |
| 629 | if (++cpool_current_index >= cpool_size) { |
| 630 | SLJIT_ASSERT(!first_patch); |
| 631 | cpool_size = 0; |
| 632 | if (label && label->size == word_count) { |
| 633 | /* Points after the current instruction. */ |
| 634 | label->addr = (sljit_uw)code_ptr; |
| 635 | label->size = code_ptr - code; |
| 636 | label = label->next; |
| 637 | } |
| 638 | } |
| 639 | } |
| 640 | } |
| 641 | else if ((*buf_ptr & 0xff000000) != PUSH_POOL) { |
| 642 | #endif |
| 643 | *code_ptr = *buf_ptr++; |
| 644 | /* These structures are ordered by their address. */ |
| 645 | SLJIT_ASSERT(!label || label->size >= word_count); |
| 646 | SLJIT_ASSERT(!jump || jump->addr >= word_count); |
| 647 | SLJIT_ASSERT(!const_ || const_->addr >= word_count); |
| 648 | if (jump && jump->addr == word_count) { |
| 649 | #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) |
| 650 | if (detect_jump_type(jump, code_ptr, code)) |
| 651 | code_ptr--; |
| 652 | jump->addr = (sljit_uw)code_ptr; |
| 653 | #else |
| 654 | jump->addr = (sljit_uw)(code_ptr - 2); |
| 655 | if (detect_jump_type(jump, code_ptr, code)) |
| 656 | code_ptr -= 2; |
| 657 | #endif |
| 658 | jump = jump->next; |
| 659 | } |
| 660 | if (label && label->size == word_count) { |
| 661 | /* code_ptr can be affected above. */ |
| 662 | label->addr = (sljit_uw)(code_ptr + 1); |
| 663 | label->size = (code_ptr + 1) - code; |
| 664 | label = label->next; |
| 665 | } |
| 666 | if (const_ && const_->addr == word_count) { |
| 667 | #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) |
| 668 | const_->addr = (sljit_uw)code_ptr; |
| 669 | #else |
| 670 | const_->addr = (sljit_uw)(code_ptr - 1); |
| 671 | #endif |
| 672 | const_ = const_->next; |
| 673 | } |
| 674 | code_ptr++; |
| 675 | #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) |
| 676 | } |
| 677 | else { |
| 678 | /* Fortunately, no need to shift. */ |
| 679 | cpool_size = *buf_ptr++ & ~PUSH_POOL; |
| 680 | SLJIT_ASSERT(cpool_size > 0); |
| 681 | cpool_start_address = ALIGN_INSTRUCTION(code_ptr + 1); |
| 682 | cpool_current_index = patch_pc_relative_loads(last_pc_patch, code_ptr, cpool_start_address, cpool_size); |
| 683 | if (cpool_current_index > 0) { |
| 684 | /* Unconditional branch. */ |
| 685 | *code_ptr = B | (((cpool_start_address - code_ptr) + cpool_current_index - 2) & ~PUSH_POOL); |
| 686 | code_ptr = cpool_start_address + cpool_current_index; |
| 687 | } |
| 688 | cpool_skip_alignment = CONST_POOL_ALIGNMENT - 1; |
| 689 | cpool_current_index = 0; |
| 690 | last_pc_patch = code_ptr; |
| 691 | } |
| 692 | #endif |
| 693 | } while (buf_ptr < buf_end); |
| 694 | buf = buf->next; |
| 695 | } while (buf); |
| 696 | |
| 697 | SLJIT_ASSERT(!label); |
| 698 | SLJIT_ASSERT(!jump); |
| 699 | SLJIT_ASSERT(!const_); |
| 700 | |
| 701 | #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) |
| 702 | SLJIT_ASSERT(cpool_size == 0); |
| 703 | if (compiler->cpool_fill > 0) { |
| 704 | cpool_start_address = ALIGN_INSTRUCTION(code_ptr); |
| 705 | cpool_current_index = patch_pc_relative_loads(last_pc_patch, code_ptr, cpool_start_address, compiler->cpool_fill); |
| 706 | if (cpool_current_index > 0) |
| 707 | code_ptr = cpool_start_address + cpool_current_index; |
| 708 | |
| 709 | buf_ptr = compiler->cpool; |
| 710 | buf_end = buf_ptr + compiler->cpool_fill; |
| 711 | cpool_current_index = 0; |
| 712 | while (buf_ptr < buf_end) { |
| 713 | if (SLJIT_UNLIKELY(resolve_const_pool_index(&first_patch, cpool_current_index, cpool_start_address, buf_ptr))) { |
| 714 | SLJIT_FREE_EXEC(code); |
| 715 | compiler->error = SLJIT_ERR_ALLOC_FAILED; |
| 716 | return NULL; |
| 717 | } |
| 718 | buf_ptr++; |
| 719 | cpool_current_index++; |
| 720 | } |
| 721 | SLJIT_ASSERT(!first_patch); |
| 722 | } |
| 723 | #endif |
| 724 | |
| 725 | jump = compiler->jumps; |
| 726 | while (jump) { |
| 727 | buf_ptr = (sljit_uw*)jump->addr; |
| 728 | |
| 729 | if (jump->flags & PATCH_B) { |
| 730 | if (!(jump->flags & JUMP_ADDR)) { |
| 731 | SLJIT_ASSERT(jump->flags & JUMP_LABEL); |
| 732 | SLJIT_ASSERT(((sljit_w)jump->u.label->addr - (sljit_w)(buf_ptr + 2)) <= 0x01ffffff && ((sljit_w)jump->u.label->addr - (sljit_w)(buf_ptr + 2)) >= -0x02000000); |
| 733 | *buf_ptr |= (((sljit_w)jump->u.label->addr - (sljit_w)(buf_ptr + 2)) >> 2) & 0x00ffffff; |
| 734 | } |
| 735 | else { |
| 736 | SLJIT_ASSERT(((sljit_w)jump->u.target - (sljit_w)(buf_ptr + 2)) <= 0x01ffffff && ((sljit_w)jump->u.target - (sljit_w)(buf_ptr + 2)) >= -0x02000000); |
| 737 | *buf_ptr |= (((sljit_w)jump->u.target - (sljit_w)(buf_ptr + 2)) >> 2) & 0x00ffffff; |
| 738 | } |
| 739 | } |
| 740 | else if (jump->flags & SLJIT_REWRITABLE_JUMP) { |
| 741 | #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) |
| 742 | jump->addr = (sljit_uw)code_ptr; |
| 743 | code_ptr[0] = (sljit_uw)buf_ptr; |
| 744 | code_ptr[1] = *buf_ptr; |
| 745 | inline_set_jump_addr((sljit_uw)code_ptr, (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target, 0); |
| 746 | code_ptr += 2; |
| 747 | #else |
| 748 | inline_set_jump_addr((sljit_uw)buf_ptr, (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target, 0); |
| 749 | #endif |
| 750 | } |
| 751 | else { |
| 752 | #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) |
| 753 | if (jump->flags & IS_BL) |
| 754 | buf_ptr--; |
| 755 | if (*buf_ptr & (1 << 23)) |
| 756 | buf_ptr += ((*buf_ptr & 0xfff) >> 2) + 2; |
| 757 | else |
| 758 | buf_ptr += 1; |
| 759 | *buf_ptr = (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target; |
| 760 | #else |
| 761 | inline_set_jump_addr((sljit_uw)buf_ptr, (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target, 0); |
| 762 | #endif |
| 763 | } |
| 764 | jump = jump->next; |
| 765 | } |
| 766 | |
| 767 | #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) |
| 768 | const_ = compiler->consts; |
| 769 | while (const_) { |
| 770 | buf_ptr = (sljit_uw*)const_->addr; |
| 771 | const_->addr = (sljit_uw)code_ptr; |
| 772 | |
| 773 | code_ptr[0] = (sljit_uw)buf_ptr; |
| 774 | code_ptr[1] = *buf_ptr; |
| 775 | if (*buf_ptr & (1 << 23)) |
| 776 | buf_ptr += ((*buf_ptr & 0xfff) >> 2) + 2; |
| 777 | else |
| 778 | buf_ptr += 1; |
| 779 | /* Set the value again (can be a simple constant). */ |
| 780 | inline_set_const((sljit_uw)code_ptr, *buf_ptr, 0); |
| 781 | code_ptr += 2; |
| 782 | |
| 783 | const_ = const_->next; |
| 784 | } |
| 785 | #endif |
| 786 | |
| 787 | SLJIT_ASSERT(code_ptr - code <= (int)size); |
| 788 | |
| 789 | SLJIT_CACHE_FLUSH(code, code_ptr); |
| 790 | compiler->error = SLJIT_ERR_COMPILED; |
| 791 | compiler->executable_size = size * sizeof(sljit_uw); |
| 792 | return code; |
| 793 | } |
| 794 | |
| 795 | /* emit_op inp_flags. |
| 796 | WRITE_BACK must be the first, since it is a flag. */ |
| 797 | #define WRITE_BACK 0x01 |
| 798 | #define ALLOW_IMM 0x02 |
| 799 | #define ALLOW_INV_IMM 0x04 |
| 800 | #define ALLOW_ANY_IMM (ALLOW_IMM | ALLOW_INV_IMM) |
| 801 | #define ARG_TEST 0x08 |
| 802 | |
| 803 | /* Creates an index in data_transfer_insts array. */ |
| 804 | #define WORD_DATA 0x00 |
| 805 | #define BYTE_DATA 0x10 |
| 806 | #define HALF_DATA 0x20 |
| 807 | #define SIGNED_DATA 0x40 |
| 808 | #define LOAD_DATA 0x80 |
| 809 | |
| 810 | #define EMIT_INSTRUCTION(inst) \ |
| 811 | FAIL_IF(push_inst(compiler, (inst))) |
| 812 | |
| 813 | /* Condition: AL. */ |
| 814 | #define EMIT_DATA_PROCESS_INS(opcode, set_flags, dst, src1, src2) \ |
| 815 | (0xe0000000 | ((opcode) << 21) | (set_flags) | RD(dst) | RN(src1) | (src2)) |
| 816 | |
| 817 | static int emit_op(struct sljit_compiler *compiler, int op, int inp_flags, |
| 818 | int dst, sljit_w dstw, |
| 819 | int src1, sljit_w src1w, |
| 820 | int src2, sljit_w src2w); |
| 821 | |
| 822 | SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_enter(struct sljit_compiler *compiler, int args, int temporaries, int generals, int local_size) |
| 823 | { |
| 824 | int size; |
| 825 | sljit_uw push; |
| 826 | |
| 827 | CHECK_ERROR(); |
| 828 | check_sljit_emit_enter(compiler, args, temporaries, generals, local_size); |
| 829 | |
| 830 | compiler->temporaries = temporaries; |
| 831 | compiler->generals = generals; |
| 832 | |
| 833 | /* Push general registers, temporary registers |
| 834 | stmdb sp!, {..., lr} */ |
| 835 | push = PUSH | (1 << 14); |
| 836 | if (temporaries >= 5) |
| 837 | push |= 1 << 11; |
| 838 | if (temporaries >= 4) |
| 839 | push |= 1 << 10; |
| 840 | if (generals >= 5) |
| 841 | push |= 1 << 8; |
| 842 | if (generals >= 4) |
| 843 | push |= 1 << 7; |
| 844 | if (generals >= 3) |
| 845 | push |= 1 << 6; |
| 846 | if (generals >= 2) |
| 847 | push |= 1 << 5; |
| 848 | if (generals >= 1) |
| 849 | push |= 1 << 4; |
| 850 | EMIT_INSTRUCTION(push); |
| 851 | |
| 852 | /* Stack must be aligned to 8 bytes: */ |
| 853 | size = (1 + generals) * sizeof(sljit_uw); |
| 854 | if (temporaries >= 4) |
| 855 | size += (temporaries - 3) * sizeof(sljit_uw); |
| 856 | local_size += size; |
| 857 | local_size = (local_size + 7) & ~7; |
| 858 | local_size -= size; |
| 859 | compiler->local_size = local_size; |
| 860 | if (local_size > 0) |
| 861 | FAIL_IF(emit_op(compiler, SLJIT_SUB, ALLOW_IMM, SLJIT_LOCALS_REG, 0, SLJIT_LOCALS_REG, 0, SLJIT_IMM, local_size)); |
| 862 | |
| 863 | if (args >= 1) |
| 864 | EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, SLJIT_GENERAL_REG1, SLJIT_UNUSED, RM(SLJIT_TEMPORARY_REG1))); |
| 865 | if (args >= 2) |
| 866 | EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, SLJIT_GENERAL_REG2, SLJIT_UNUSED, RM(SLJIT_TEMPORARY_REG2))); |
| 867 | if (args >= 3) |
| 868 | EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, SLJIT_GENERAL_REG3, SLJIT_UNUSED, RM(SLJIT_TEMPORARY_REG3))); |
| 869 | |
| 870 | return SLJIT_SUCCESS; |
| 871 | } |
| 872 | |
| 873 | SLJIT_API_FUNC_ATTRIBUTE void sljit_fake_enter(struct sljit_compiler *compiler, int args, int temporaries, int generals, int local_size) |
| 874 | { |
| 875 | int size; |
| 876 | |
| 877 | CHECK_ERROR_VOID(); |
| 878 | check_sljit_fake_enter(compiler, args, temporaries, generals, local_size); |
| 879 | |
| 880 | compiler->temporaries = temporaries; |
| 881 | compiler->generals = generals; |
| 882 | |
| 883 | size = (1 + generals) * sizeof(sljit_uw); |
| 884 | if (temporaries >= 4) |
| 885 | size += (temporaries - 3) * sizeof(sljit_uw); |
| 886 | local_size += size; |
| 887 | local_size = (local_size + 7) & ~7; |
| 888 | local_size -= size; |
| 889 | compiler->local_size = local_size; |
| 890 | } |
| 891 | |
| 892 | SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_return(struct sljit_compiler *compiler, int src, sljit_w srcw) |
| 893 | { |
| 894 | sljit_uw pop; |
| 895 | |
| 896 | CHECK_ERROR(); |
| 897 | check_sljit_emit_return(compiler, src, srcw); |
| 898 | |
| 899 | if (src != SLJIT_UNUSED && src != SLJIT_RETURN_REG) |
| 900 | FAIL_IF(emit_op(compiler, SLJIT_MOV, ALLOW_ANY_IMM, SLJIT_RETURN_REG, 0, TMP_REG1, 0, src, srcw)); |
| 901 | |
| 902 | if (compiler->local_size > 0) |
| 903 | FAIL_IF(emit_op(compiler, SLJIT_ADD, ALLOW_IMM, SLJIT_LOCALS_REG, 0, SLJIT_LOCALS_REG, 0, SLJIT_IMM, compiler->local_size)); |
| 904 | |
| 905 | pop = POP | (1 << 15); |
| 906 | /* Push general registers, temporary registers |
| 907 | ldmia sp!, {..., pc} */ |
| 908 | if (compiler->temporaries >= 5) |
| 909 | pop |= 1 << 11; |
| 910 | if (compiler->temporaries >= 4) |
| 911 | pop |= 1 << 10; |
| 912 | if (compiler->generals >= 5) |
| 913 | pop |= 1 << 8; |
| 914 | if (compiler->generals >= 4) |
| 915 | pop |= 1 << 7; |
| 916 | if (compiler->generals >= 3) |
| 917 | pop |= 1 << 6; |
| 918 | if (compiler->generals >= 2) |
| 919 | pop |= 1 << 5; |
| 920 | if (compiler->generals >= 1) |
| 921 | pop |= 1 << 4; |
| 922 | |
| 923 | return push_inst(compiler, pop); |
| 924 | } |
| 925 | |
| 926 | /* --------------------------------------------------------------------- */ |
| 927 | /* Operators */ |
| 928 | /* --------------------------------------------------------------------- */ |
| 929 | |
| 930 | /* s/l - store/load (1 bit) |
| 931 | u/s - signed/unsigned (1 bit) |
| 932 | w/b/h/N - word/byte/half/NOT allowed (2 bit) |
| 933 | It contans 16 items, but not all are different. */ |
| 934 | |
| 935 | static sljit_w data_transfer_insts[16] = { |
| 936 | /* s u w */ 0xe5000000 /* str */, |
| 937 | /* s u b */ 0xe5400000 /* strb */, |
| 938 | /* s u h */ 0xe10000b0 /* strh */, |
| 939 | /* s u N */ 0x00000000 /* not allowed */, |
| 940 | /* s s w */ 0xe5000000 /* str */, |
| 941 | /* s s b */ 0xe5400000 /* strb */, |
| 942 | /* s s h */ 0xe10000b0 /* strh */, |
| 943 | /* s s N */ 0x00000000 /* not allowed */, |
| 944 | |
| 945 | /* l u w */ 0xe5100000 /* ldr */, |
| 946 | /* l u b */ 0xe5500000 /* ldrb */, |
| 947 | /* l u h */ 0xe11000b0 /* ldrh */, |
| 948 | /* l u N */ 0x00000000 /* not allowed */, |
| 949 | /* l s w */ 0xe5100000 /* ldr */, |
| 950 | /* l s b */ 0xe11000d0 /* ldrsb */, |
| 951 | /* l s h */ 0xe11000f0 /* ldrsh */, |
| 952 | /* l s N */ 0x00000000 /* not allowed */, |
| 953 | }; |
| 954 | |
| 955 | #define EMIT_DATA_TRANSFER(type, add, wb, target, base1, base2) \ |
| 956 | (data_transfer_insts[(type) >> 4] | ((add) << 23) | ((wb) << 21) | (reg_map[target] << 12) | (reg_map[base1] << 16) | (base2)) |
| 957 | /* Normal ldr/str instruction. |
| 958 | Type2: ldrsb, ldrh, ldrsh */ |
| 959 | #define IS_TYPE1_TRANSFER(type) \ |
| 960 | (data_transfer_insts[(type) >> 4] & 0x04000000) |
| 961 | #define TYPE2_TRANSFER_IMM(imm) \ |
| 962 | (((imm) & 0xf) | (((imm) & 0xf0) << 4) | (1 << 22)) |
| 963 | |
| 964 | /* flags: */ |
| 965 | /* Arguments are swapped. */ |
| 966 | #define ARGS_SWAPPED 0x01 |
| 967 | /* Inverted immediate. */ |
| 968 | #define INV_IMM 0x02 |
| 969 | /* Source and destination is register. */ |
| 970 | #define REG_DEST 0x04 |
| 971 | #define REG_SOURCE 0x08 |
| 972 | /* One instruction is enough. */ |
| 973 | #define FAST_DEST 0x10 |
| 974 | /* Multiple instructions are required. */ |
| 975 | #define SLOW_DEST 0x20 |
| 976 | /* SET_FLAGS must be (1 << 20) as it is also the value of S bit (can be used for optimization). */ |
| 977 | #define SET_FLAGS (1 << 20) |
| 978 | /* dst: reg |
| 979 | src1: reg |
| 980 | src2: reg or imm (if allowed) |
| 981 | SRC2_IMM must be (1 << 25) as it is also the value of I bit (can be used for optimization). */ |
| 982 | #define SRC2_IMM (1 << 25) |
| 983 | |
| 984 | #define EMIT_DATA_PROCESS_INS_AND_RETURN(opcode) \ |
| 985 | return push_inst(compiler, EMIT_DATA_PROCESS_INS(opcode, flags & SET_FLAGS, dst, src1, (src2 & SRC2_IMM) ? src2 : RM(src2))) |
| 986 | |
| 987 | #define EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(opcode, dst, src1, src2) \ |
| 988 | return push_inst(compiler, EMIT_DATA_PROCESS_INS(opcode, flags & SET_FLAGS, dst, src1, src2)) |
| 989 | |
| 990 | #define EMIT_SHIFT_INS_AND_RETURN(opcode) \ |
| 991 | SLJIT_ASSERT(!(flags & INV_IMM) && !(src2 & SRC2_IMM)); \ |
| 992 | if (compiler->shift_imm != 0x20) { \ |
| 993 | SLJIT_ASSERT(src1 == TMP_REG1); \ |
| 994 | SLJIT_ASSERT(!(flags & ARGS_SWAPPED)); \ |
| 995 | return push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, flags & SET_FLAGS, dst, SLJIT_UNUSED, (compiler->shift_imm << 7) | (opcode << 5) | reg_map[src2])); \ |
| 996 | } \ |
| 997 | return push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, flags & SET_FLAGS, dst, SLJIT_UNUSED, (reg_map[(flags & ARGS_SWAPPED) ? src1 : src2] << 8) | (opcode << 5) | 0x10 | ((flags & ARGS_SWAPPED) ? reg_map[src2] : reg_map[src1]))); |
| 998 | |
| 999 | static SLJIT_INLINE int emit_single_op(struct sljit_compiler *compiler, int op, int flags, |
| 1000 | int dst, int src1, int src2) |
| 1001 | { |
| 1002 | sljit_w mul_inst; |
| 1003 | |
| 1004 | switch (GET_OPCODE(op)) { |
| 1005 | case SLJIT_ADD: |
| 1006 | SLJIT_ASSERT(!(flags & INV_IMM)); |
| 1007 | EMIT_DATA_PROCESS_INS_AND_RETURN(ADD_DP); |
| 1008 | |
| 1009 | case SLJIT_ADDC: |
| 1010 | SLJIT_ASSERT(!(flags & INV_IMM)); |
| 1011 | EMIT_DATA_PROCESS_INS_AND_RETURN(ADC_DP); |
| 1012 | |
| 1013 | case SLJIT_SUB: |
| 1014 | SLJIT_ASSERT(!(flags & INV_IMM)); |
| 1015 | if (!(flags & ARGS_SWAPPED)) |
| 1016 | EMIT_DATA_PROCESS_INS_AND_RETURN(SUB_DP); |
| 1017 | EMIT_DATA_PROCESS_INS_AND_RETURN(RSB_DP); |
| 1018 | |
| 1019 | case SLJIT_SUBC: |
| 1020 | SLJIT_ASSERT(!(flags & INV_IMM)); |
| 1021 | if (!(flags & ARGS_SWAPPED)) |
| 1022 | EMIT_DATA_PROCESS_INS_AND_RETURN(SBC_DP); |
| 1023 | EMIT_DATA_PROCESS_INS_AND_RETURN(RSC_DP); |
| 1024 | |
| 1025 | case SLJIT_MUL: |
| 1026 | SLJIT_ASSERT(!(flags & INV_IMM)); |
| 1027 | SLJIT_ASSERT(!(src2 & SRC2_IMM)); |
| 1028 | if (SLJIT_UNLIKELY(op & SLJIT_SET_O)) |
| 1029 | mul_inst = SMULL | (reg_map[TMP_REG3] << 16) | (reg_map[dst] << 12); |
| 1030 | else |
| 1031 | mul_inst = MUL | (reg_map[dst] << 16); |
| 1032 | |
| 1033 | if (dst != src2) |
| 1034 | FAIL_IF(push_inst(compiler, mul_inst | (reg_map[src1] << 8) | reg_map[src2])); |
| 1035 | else if (dst != src1) |
| 1036 | FAIL_IF(push_inst(compiler, mul_inst | (reg_map[src2] << 8) | reg_map[src1])); |
| 1037 | else { |
| 1038 | /* Rm and Rd must not be the same register. */ |
| 1039 | SLJIT_ASSERT(dst != TMP_REG1); |
| 1040 | FAIL_IF(push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG1, SLJIT_UNUSED, reg_map[src2]))); |
| 1041 | FAIL_IF(push_inst(compiler, mul_inst | (reg_map[src2] << 8) | reg_map[TMP_REG1])); |
| 1042 | } |
| 1043 | |
| 1044 | if (!(op & SLJIT_SET_O)) |
| 1045 | return SLJIT_SUCCESS; |
| 1046 | |
| 1047 | /* We need to use TMP_REG3. */ |
| 1048 | compiler->cache_arg = 0; |
| 1049 | compiler->cache_argw = 0; |
| 1050 | /* cmp TMP_REG2, dst asr #31. */ |
| 1051 | return push_inst(compiler, EMIT_DATA_PROCESS_INS(CMP_DP, SET_FLAGS, SLJIT_UNUSED, TMP_REG3, RM(dst) | 0xfc0)); |
| 1052 | |
| 1053 | case SLJIT_AND: |
| 1054 | if (!(flags & INV_IMM)) |
| 1055 | EMIT_DATA_PROCESS_INS_AND_RETURN(AND_DP); |
| 1056 | EMIT_DATA_PROCESS_INS_AND_RETURN(BIC_DP); |
| 1057 | |
| 1058 | case SLJIT_OR: |
| 1059 | SLJIT_ASSERT(!(flags & INV_IMM)); |
| 1060 | EMIT_DATA_PROCESS_INS_AND_RETURN(ORR_DP); |
| 1061 | |
| 1062 | case SLJIT_XOR: |
| 1063 | SLJIT_ASSERT(!(flags & INV_IMM)); |
| 1064 | EMIT_DATA_PROCESS_INS_AND_RETURN(EOR_DP); |
| 1065 | |
| 1066 | case SLJIT_SHL: |
| 1067 | EMIT_SHIFT_INS_AND_RETURN(0); |
| 1068 | |
| 1069 | case SLJIT_LSHR: |
| 1070 | EMIT_SHIFT_INS_AND_RETURN(1); |
| 1071 | |
| 1072 | case SLJIT_ASHR: |
| 1073 | EMIT_SHIFT_INS_AND_RETURN(2); |
| 1074 | |
| 1075 | case SLJIT_MOV: |
| 1076 | SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & ARGS_SWAPPED)); |
| 1077 | if (dst != src2) { |
| 1078 | if (src2 & SRC2_IMM) { |
| 1079 | if (flags & INV_IMM) |
| 1080 | EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MVN_DP, dst, SLJIT_UNUSED, src2); |
| 1081 | EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MOV_DP, dst, SLJIT_UNUSED, src2); |
| 1082 | } |
| 1083 | EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MOV_DP, dst, SLJIT_UNUSED, reg_map[src2]); |
| 1084 | } |
| 1085 | return SLJIT_SUCCESS; |
| 1086 | |
| 1087 | case SLJIT_MOV_UB: |
| 1088 | case SLJIT_MOV_SB: |
| 1089 | SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & ARGS_SWAPPED)); |
| 1090 | if ((flags & (REG_DEST | REG_SOURCE)) == (REG_DEST | REG_SOURCE)) { |
| 1091 | #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) |
| 1092 | if (op == SLJIT_MOV_UB) |
| 1093 | return push_inst(compiler, EMIT_DATA_PROCESS_INS(AND_DP, 0, dst, src2, SRC2_IMM | 0xff)); |
| 1094 | EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, dst, SLJIT_UNUSED, (24 << 7) | reg_map[src2])); |
| 1095 | return push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, 0, dst, SLJIT_UNUSED, (24 << 7) | (op == SLJIT_MOV_UB ? 0x20 : 0x40) | reg_map[dst])); |
| 1096 | #else |
| 1097 | return push_inst(compiler, (op == SLJIT_MOV_UB ? UXTB : SXTB) | RD(dst) | RM(src2)); |
| 1098 | #endif |
| 1099 | } |
| 1100 | else if (dst != src2) { |
| 1101 | SLJIT_ASSERT(src2 & SRC2_IMM); |
| 1102 | if (flags & INV_IMM) |
| 1103 | EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MVN_DP, dst, SLJIT_UNUSED, src2); |
| 1104 | EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MOV_DP, dst, SLJIT_UNUSED, src2); |
| 1105 | } |
| 1106 | return SLJIT_SUCCESS; |
| 1107 | |
| 1108 | case SLJIT_MOV_UH: |
| 1109 | case SLJIT_MOV_SH: |
| 1110 | SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & ARGS_SWAPPED)); |
| 1111 | if ((flags & (REG_DEST | REG_SOURCE)) == (REG_DEST | REG_SOURCE)) { |
| 1112 | #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) |
| 1113 | EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, dst, SLJIT_UNUSED, (16 << 7) | reg_map[src2])); |
| 1114 | return push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, 0, dst, SLJIT_UNUSED, (16 << 7) | (op == SLJIT_MOV_UH ? 0x20 : 0x40) | reg_map[dst])); |
| 1115 | #else |
| 1116 | return push_inst(compiler, (op == SLJIT_MOV_UH ? UXTH : SXTH) | RD(dst) | RM(src2)); |
| 1117 | #endif |
| 1118 | } |
| 1119 | else if (dst != src2) { |
| 1120 | SLJIT_ASSERT(src2 & SRC2_IMM); |
| 1121 | if (flags & INV_IMM) |
| 1122 | EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MVN_DP, dst, SLJIT_UNUSED, src2); |
| 1123 | EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MOV_DP, dst, SLJIT_UNUSED, src2); |
| 1124 | } |
| 1125 | return SLJIT_SUCCESS; |
| 1126 | |
| 1127 | case SLJIT_NOT: |
| 1128 | if (src2 & SRC2_IMM) { |
| 1129 | if (flags & INV_IMM) |
| 1130 | EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MOV_DP, dst, SLJIT_UNUSED, src2); |
| 1131 | EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MVN_DP, dst, SLJIT_UNUSED, src2); |
| 1132 | } |
| 1133 | EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(MVN_DP, dst, SLJIT_UNUSED, RM(src2)); |
| 1134 | |
| 1135 | case SLJIT_CLZ: |
| 1136 | SLJIT_ASSERT(!(flags & INV_IMM)); |
| 1137 | SLJIT_ASSERT(!(src2 & SRC2_IMM)); |
| 1138 | FAIL_IF(push_inst(compiler, CLZ | RD(dst) | RM(src2))); |
| 1139 | if (flags & SET_FLAGS) |
| 1140 | EMIT_FULL_DATA_PROCESS_INS_AND_RETURN(CMP_DP, SLJIT_UNUSED, dst, SRC2_IMM); |
| 1141 | return SLJIT_SUCCESS; |
| 1142 | } |
| 1143 | SLJIT_ASSERT_STOP(); |
| 1144 | return SLJIT_SUCCESS; |
| 1145 | } |
| 1146 | |
| 1147 | #undef EMIT_DATA_PROCESS_INS_AND_RETURN |
| 1148 | #undef EMIT_FULL_DATA_PROCESS_INS_AND_RETURN |
| 1149 | #undef EMIT_SHIFT_INS_AND_RETURN |
| 1150 | |
| 1151 | /* Tests whether the immediate can be stored in the 12 bit imm field. |
| 1152 | Returns with 0 if not possible. */ |
| 1153 | static sljit_uw get_immediate(sljit_uw imm) |
| 1154 | { |
| 1155 | int rol; |
| 1156 | |
| 1157 | if (imm <= 0xff) |
| 1158 | return SRC2_IMM | imm; |
| 1159 | |
| 1160 | if (!(imm & 0xff000000)) { |
| 1161 | imm <<= 8; |
| 1162 | rol = 8; |
| 1163 | } |
| 1164 | else { |
| 1165 | imm = (imm << 24) | (imm >> 8); |
| 1166 | rol = 0; |
| 1167 | } |
| 1168 | |
| 1169 | if (!(imm & 0xff000000)) { |
| 1170 | imm <<= 8; |
| 1171 | rol += 4; |
| 1172 | } |
| 1173 | |
| 1174 | if (!(imm & 0xf0000000)) { |
| 1175 | imm <<= 4; |
| 1176 | rol += 2; |
| 1177 | } |
| 1178 | |
| 1179 | if (!(imm & 0xc0000000)) { |
| 1180 | imm <<= 2; |
| 1181 | rol += 1; |
| 1182 | } |
| 1183 | |
| 1184 | if (!(imm & 0x00ffffff)) |
| 1185 | return SRC2_IMM | (imm >> 24) | (rol << 8); |
| 1186 | else |
| 1187 | return 0; |
| 1188 | } |
| 1189 | |
| 1190 | #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) |
| 1191 | static int generate_int(struct sljit_compiler *compiler, int reg, sljit_uw imm, int positive) |
| 1192 | { |
| 1193 | sljit_uw mask; |
| 1194 | sljit_uw imm1; |
| 1195 | sljit_uw imm2; |
| 1196 | int rol; |
| 1197 | |
| 1198 | /* Step1: Search a zero byte (8 continous zero bit). */ |
| 1199 | mask = 0xff000000; |
| 1200 | rol = 8; |
| 1201 | while(1) { |
| 1202 | if (!(imm & mask)) { |
| 1203 | /* Rol imm by rol. */ |
| 1204 | imm = (imm << rol) | (imm >> (32 - rol)); |
| 1205 | /* Calculate arm rol. */ |
| 1206 | rol = 4 + (rol >> 1); |
| 1207 | break; |
| 1208 | } |
| 1209 | rol += 2; |
| 1210 | mask >>= 2; |
| 1211 | if (mask & 0x3) { |
| 1212 | /* rol by 8. */ |
| 1213 | imm = (imm << 8) | (imm >> 24); |
| 1214 | mask = 0xff00; |
| 1215 | rol = 24; |
| 1216 | while (1) { |
| 1217 | if (!(imm & mask)) { |
| 1218 | /* Rol imm by rol. */ |
| 1219 | imm = (imm << rol) | (imm >> (32 - rol)); |
| 1220 | /* Calculate arm rol. */ |
| 1221 | rol = (rol >> 1) - 8; |
| 1222 | break; |
| 1223 | } |
| 1224 | rol += 2; |
| 1225 | mask >>= 2; |
| 1226 | if (mask & 0x3) |
| 1227 | return 0; |
| 1228 | } |
| 1229 | break; |
| 1230 | } |
| 1231 | } |
| 1232 | |
| 1233 | /* The low 8 bit must be zero. */ |
| 1234 | SLJIT_ASSERT(!(imm & 0xff)); |
| 1235 | |
| 1236 | if (!(imm & 0xff000000)) { |
| 1237 | imm1 = SRC2_IMM | ((imm >> 16) & 0xff) | (((rol + 4) & 0xf) << 8); |
| 1238 | imm2 = SRC2_IMM | ((imm >> 8) & 0xff) | (((rol + 8) & 0xf) << 8); |
| 1239 | } |
| 1240 | else if (imm & 0xc0000000) { |
| 1241 | imm1 = SRC2_IMM | ((imm >> 24) & 0xff) | ((rol & 0xf) << 8); |
| 1242 | imm <<= 8; |
| 1243 | rol += 4; |
| 1244 | |
| 1245 | if (!(imm & 0xff000000)) { |
| 1246 | imm <<= 8; |
| 1247 | rol += 4; |
| 1248 | } |
| 1249 | |
| 1250 | if (!(imm & 0xf0000000)) { |
| 1251 | imm <<= 4; |
| 1252 | rol += 2; |
| 1253 | } |
| 1254 | |
| 1255 | if (!(imm & 0xc0000000)) { |
| 1256 | imm <<= 2; |
| 1257 | rol += 1; |
| 1258 | } |
| 1259 | |
| 1260 | if (!(imm & 0x00ffffff)) |
| 1261 | imm2 = SRC2_IMM | (imm >> 24) | ((rol & 0xf) << 8); |
| 1262 | else |
| 1263 | return 0; |
| 1264 | } |
| 1265 | else { |
| 1266 | if (!(imm & 0xf0000000)) { |
| 1267 | imm <<= 4; |
| 1268 | rol += 2; |
| 1269 | } |
| 1270 | |
| 1271 | if (!(imm & 0xc0000000)) { |
| 1272 | imm <<= 2; |
| 1273 | rol += 1; |
| 1274 | } |
| 1275 | |
| 1276 | imm1 = SRC2_IMM | ((imm >> 24) & 0xff) | ((rol & 0xf) << 8); |
| 1277 | imm <<= 8; |
| 1278 | rol += 4; |
| 1279 | |
| 1280 | if (!(imm & 0xf0000000)) { |
| 1281 | imm <<= 4; |
| 1282 | rol += 2; |
| 1283 | } |
| 1284 | |
| 1285 | if (!(imm & 0xc0000000)) { |
| 1286 | imm <<= 2; |
| 1287 | rol += 1; |
| 1288 | } |
| 1289 | |
| 1290 | if (!(imm & 0x00ffffff)) |
| 1291 | imm2 = SRC2_IMM | (imm >> 24) | ((rol & 0xf) << 8); |
| 1292 | else |
| 1293 | return 0; |
| 1294 | } |
| 1295 | |
| 1296 | EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(positive ? MOV_DP : MVN_DP, 0, reg, SLJIT_UNUSED, imm1)); |
| 1297 | EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(positive ? ORR_DP : BIC_DP, 0, reg, reg, imm2)); |
| 1298 | return 1; |
| 1299 | } |
| 1300 | #endif |
| 1301 | |
| 1302 | static int load_immediate(struct sljit_compiler *compiler, int reg, sljit_uw imm) |
| 1303 | { |
| 1304 | sljit_uw tmp; |
| 1305 | |
| 1306 | #if (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7) |
| 1307 | if (!(imm & ~0xffff)) |
| 1308 | return push_inst(compiler, MOVW | RD(reg) | ((imm << 4) & 0xf0000) | (imm & 0xfff)); |
| 1309 | #endif |
| 1310 | |
| 1311 | /* Create imm by 1 inst. */ |
| 1312 | tmp = get_immediate(imm); |
| 1313 | if (tmp) { |
| 1314 | EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, reg, SLJIT_UNUSED, tmp)); |
| 1315 | return SLJIT_SUCCESS; |
| 1316 | } |
| 1317 | |
| 1318 | tmp = get_immediate(~imm); |
| 1319 | if (tmp) { |
| 1320 | EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MVN_DP, 0, reg, SLJIT_UNUSED, tmp)); |
| 1321 | return SLJIT_SUCCESS; |
| 1322 | } |
| 1323 | |
| 1324 | #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) |
| 1325 | /* Create imm by 2 inst. */ |
| 1326 | FAIL_IF(generate_int(compiler, reg, imm, 1)); |
| 1327 | FAIL_IF(generate_int(compiler, reg, ~imm, 0)); |
| 1328 | |
| 1329 | /* Load integer. */ |
| 1330 | return push_inst_with_literal(compiler, EMIT_DATA_TRANSFER(WORD_DATA | LOAD_DATA, 1, 0, reg, TMP_PC, 0), imm); |
| 1331 | #else |
| 1332 | return emit_imm(compiler, reg, imm); |
| 1333 | #endif |
| 1334 | } |
| 1335 | |
| 1336 | /* Can perform an operation using at most 1 instruction. */ |
| 1337 | static int getput_arg_fast(struct sljit_compiler *compiler, int inp_flags, int reg, int arg, sljit_w argw) |
| 1338 | { |
| 1339 | sljit_uw imm; |
| 1340 | |
| 1341 | if (arg & SLJIT_IMM) { |
| 1342 | imm = get_immediate(argw); |
| 1343 | if (imm) { |
| 1344 | if (inp_flags & ARG_TEST) |
| 1345 | return 1; |
| 1346 | EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, reg, SLJIT_UNUSED, imm)); |
| 1347 | return -1; |
| 1348 | } |
| 1349 | imm = get_immediate(~argw); |
| 1350 | if (imm) { |
| 1351 | if (inp_flags & ARG_TEST) |
| 1352 | return 1; |
| 1353 | EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MVN_DP, 0, reg, SLJIT_UNUSED, imm)); |
| 1354 | return -1; |
| 1355 | } |
| 1356 | return (inp_flags & ARG_TEST) ? SLJIT_SUCCESS : 0; |
| 1357 | } |
| 1358 | |
| 1359 | SLJIT_ASSERT(arg & SLJIT_MEM); |
| 1360 | |
| 1361 | /* Fast loads/stores. */ |
| 1362 | if (arg & 0xf) { |
| 1363 | if (!(arg & 0xf0)) { |
| 1364 | if (IS_TYPE1_TRANSFER(inp_flags)) { |
| 1365 | if (argw >= 0 && argw <= 0xfff) { |
| 1366 | if (inp_flags & ARG_TEST) |
| 1367 | return 1; |
| 1368 | EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, inp_flags & WRITE_BACK, reg, arg & 0xf, argw)); |
| 1369 | return -1; |
| 1370 | } |
| 1371 | if (argw < 0 && argw >= -0xfff) { |
| 1372 | if (inp_flags & ARG_TEST) |
| 1373 | return 1; |
| 1374 | EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 0, inp_flags & WRITE_BACK, reg, arg & 0xf, -argw)); |
| 1375 | return -1; |
| 1376 | } |
| 1377 | } |
| 1378 | else { |
| 1379 | if (argw >= 0 && argw <= 0xff) { |
| 1380 | if (inp_flags & ARG_TEST) |
| 1381 | return 1; |
| 1382 | EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, inp_flags & WRITE_BACK, reg, arg & 0xf, TYPE2_TRANSFER_IMM(argw))); |
| 1383 | return -1; |
| 1384 | } |
| 1385 | if (argw < 0 && argw >= -0xff) { |
| 1386 | if (inp_flags & ARG_TEST) |
| 1387 | return 1; |
| 1388 | argw = -argw; |
| 1389 | EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 0, inp_flags & WRITE_BACK, reg, arg & 0xf, TYPE2_TRANSFER_IMM(argw))); |
| 1390 | return -1; |
| 1391 | } |
| 1392 | } |
| 1393 | } |
| 1394 | else if ((argw & 0x3) == 0 || IS_TYPE1_TRANSFER(inp_flags)) { |
| 1395 | if (inp_flags & ARG_TEST) |
| 1396 | return 1; |
| 1397 | EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, inp_flags & WRITE_BACK, reg, arg & 0xf, |
| 1398 | RM((arg >> 4) & 0xf) | (IS_TYPE1_TRANSFER(inp_flags) ? SRC2_IMM : 0) | ((argw & 0x3) << 7))); |
| 1399 | return -1; |
| 1400 | } |
| 1401 | } |
| 1402 | |
| 1403 | return (inp_flags & ARG_TEST) ? SLJIT_SUCCESS : 0; |
| 1404 | } |
| 1405 | |
| 1406 | /* See getput_arg below. |
| 1407 | Note: can_cache is called only for binary operators. Those |
| 1408 | operators always uses word arguments without write back. */ |
| 1409 | static int can_cache(int arg, sljit_w argw, int next_arg, sljit_w next_argw) |
| 1410 | { |
| 1411 | /* Immediate caching is not supported as it would be an operation on constant arguments. */ |
| 1412 | if (arg & SLJIT_IMM) |
| 1413 | return 0; |
| 1414 | |
| 1415 | /* Always a simple operation. */ |
| 1416 | if (arg & 0xf0) |
| 1417 | return 0; |
| 1418 | |
| 1419 | if (!(arg & 0xf)) { |
| 1420 | /* Immediate access. */ |
| 1421 | if ((next_arg & SLJIT_MEM) && ((sljit_uw)argw - (sljit_uw)next_argw <= 0xfff || (sljit_uw)next_argw - (sljit_uw)argw <= 0xfff)) |
| 1422 | return 1; |
| 1423 | return 0; |
| 1424 | } |
| 1425 | |
| 1426 | if (argw <= 0xfffff && argw >= -0xfffff) |
| 1427 | return 0; |
| 1428 | |
| 1429 | if (argw == next_argw && (next_arg & SLJIT_MEM)) |
| 1430 | return 1; |
| 1431 | |
| 1432 | if (arg == next_arg && ((sljit_uw)argw - (sljit_uw)next_argw <= 0xfff || (sljit_uw)next_argw - (sljit_uw)argw <= 0xfff)) |
| 1433 | return 1; |
| 1434 | |
| 1435 | return 0; |
| 1436 | } |
| 1437 | |
| 1438 | #define GETPUT_ARG_DATA_TRANSFER(add, wb, target, base, imm) \ |
| 1439 | if (max_delta & 0xf00) \ |
| 1440 | FAIL_IF(push_inst(compiler, EMIT_DATA_TRANSFER(inp_flags, add, wb, target, base, imm))); \ |
| 1441 | else \ |
| 1442 | FAIL_IF(push_inst(compiler, EMIT_DATA_TRANSFER(inp_flags, add, wb, target, base, TYPE2_TRANSFER_IMM(imm)))); |
| 1443 | |
| 1444 | #define TEST_WRITE_BACK() \ |
| 1445 | if (inp_flags & WRITE_BACK) { \ |
| 1446 | tmp_r = arg & 0xf; \ |
| 1447 | if (reg == tmp_r) { \ |
| 1448 | /* This can only happen for stores */ \ |
| 1449 | /* since ldr reg, [reg, ...]! has no meaning */ \ |
| 1450 | SLJIT_ASSERT(!(inp_flags & LOAD_DATA)); \ |
| 1451 | EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG3, SLJIT_UNUSED, RM(reg))); \ |
| 1452 | reg = TMP_REG3; \ |
| 1453 | } \ |
| 1454 | } |
| 1455 | |
| 1456 | /* Emit the necessary instructions. See can_cache above. */ |
| 1457 | static int getput_arg(struct sljit_compiler *compiler, int inp_flags, int reg, int arg, sljit_w argw, int next_arg, sljit_w next_argw) |
| 1458 | { |
| 1459 | int tmp_r; |
| 1460 | sljit_w max_delta; |
| 1461 | sljit_w sign; |
| 1462 | |
| 1463 | if (arg & SLJIT_IMM) { |
| 1464 | SLJIT_ASSERT(inp_flags & LOAD_DATA); |
| 1465 | return load_immediate(compiler, reg, argw); |
| 1466 | } |
| 1467 | |
| 1468 | SLJIT_ASSERT(arg & SLJIT_MEM); |
| 1469 | |
| 1470 | tmp_r = (inp_flags & LOAD_DATA) ? reg : TMP_REG3; |
| 1471 | max_delta = IS_TYPE1_TRANSFER(inp_flags) ? 0xfff : 0xff; |
| 1472 | |
| 1473 | if ((arg & 0xf) == SLJIT_UNUSED) { |
| 1474 | /* Write back is not used. */ |
| 1475 | if ((compiler->cache_arg & SLJIT_IMM) && (((sljit_uw)argw - (sljit_uw)compiler->cache_argw) <= (sljit_uw)max_delta || ((sljit_uw)compiler->cache_argw - (sljit_uw)argw) <= (sljit_uw)max_delta)) { |
| 1476 | if (((sljit_uw)argw - (sljit_uw)compiler->cache_argw) <= (sljit_uw)max_delta) { |
| 1477 | sign = 1; |
| 1478 | argw = argw - compiler->cache_argw; |
| 1479 | } |
| 1480 | else { |
| 1481 | sign = 0; |
| 1482 | argw = compiler->cache_argw - argw; |
| 1483 | } |
| 1484 | |
| 1485 | if (max_delta & 0xf00) { |
| 1486 | EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, sign, 0, reg, TMP_REG3, argw)); |
| 1487 | } |
| 1488 | else { |
| 1489 | EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, sign, 0, reg, TMP_REG3, TYPE2_TRANSFER_IMM(argw))); |
| 1490 | } |
| 1491 | return SLJIT_SUCCESS; |
| 1492 | } |
| 1493 | |
| 1494 | /* With write back, we can create some sophisticated loads, but |
| 1495 | it is hard to decide whether we should convert downward (0s) or upward (1s). */ |
| 1496 | if ((next_arg & SLJIT_MEM) && ((sljit_uw)argw - (sljit_uw)next_argw <= (sljit_uw)max_delta || (sljit_uw)next_argw - (sljit_uw)argw <= (sljit_uw)max_delta)) { |
| 1497 | SLJIT_ASSERT(inp_flags & LOAD_DATA); |
| 1498 | |
| 1499 | compiler->cache_arg = SLJIT_IMM; |
| 1500 | compiler->cache_argw = argw; |
| 1501 | tmp_r = TMP_REG3; |
| 1502 | } |
| 1503 | |
| 1504 | FAIL_IF(load_immediate(compiler, tmp_r, argw)); |
| 1505 | GETPUT_ARG_DATA_TRANSFER(1, 0, reg, tmp_r, 0); |
| 1506 | return SLJIT_SUCCESS; |
| 1507 | } |
| 1508 | |
| 1509 | /* Extended imm addressing for [reg+imm] format. */ |
| 1510 | sign = (max_delta << 8) | 0xff; |
| 1511 | if (!(arg & 0xf0) && argw <= sign && argw >= -sign) { |
| 1512 | TEST_WRITE_BACK(); |
| 1513 | if (argw >= 0) { |
| 1514 | sign = 1; |
| 1515 | } |
| 1516 | else { |
| 1517 | sign = 0; |
| 1518 | argw = -argw; |
| 1519 | } |
| 1520 | |
| 1521 | /* Optimization: add is 0x4, sub is 0x2. Sign is 1 for add and 0 for sub. */ |
| 1522 | if (max_delta & 0xf00) |
| 1523 | EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(SUB_DP << sign, 0, tmp_r, arg & 0xf, SRC2_IMM | (argw >> 12) | 0xa00)); |
| 1524 | else |
| 1525 | EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(SUB_DP << sign, 0, tmp_r, arg & 0xf, SRC2_IMM | (argw >> 8) | 0xc00)); |
| 1526 | |
| 1527 | argw &= max_delta; |
| 1528 | GETPUT_ARG_DATA_TRANSFER(sign, inp_flags & WRITE_BACK, reg, tmp_r, argw); |
| 1529 | return SLJIT_SUCCESS; |
| 1530 | } |
| 1531 | |
| 1532 | if (arg & 0xf0) { |
| 1533 | SLJIT_ASSERT((argw & 0x3) && !(max_delta & 0xf00)); |
| 1534 | if (inp_flags & WRITE_BACK) |
| 1535 | tmp_r = arg & 0xf; |
| 1536 | EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(ADD_DP, 0, tmp_r, arg & 0xf, RM((arg >> 4) & 0xf) | ((argw & 0x3) << 7))); |
| 1537 | EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, 0, reg, tmp_r, TYPE2_TRANSFER_IMM(0))); |
| 1538 | return SLJIT_SUCCESS; |
| 1539 | } |
| 1540 | |
| 1541 | if (compiler->cache_arg == arg && ((sljit_uw)argw - (sljit_uw)compiler->cache_argw) <= (sljit_uw)max_delta) { |
| 1542 | SLJIT_ASSERT(!(inp_flags & WRITE_BACK)); |
| 1543 | argw = argw - compiler->cache_argw; |
| 1544 | GETPUT_ARG_DATA_TRANSFER(1, 0, reg, TMP_REG3, argw); |
| 1545 | return SLJIT_SUCCESS; |
| 1546 | } |
| 1547 | |
| 1548 | if (compiler->cache_arg == arg && ((sljit_uw)compiler->cache_argw - (sljit_uw)argw) <= (sljit_uw)max_delta) { |
| 1549 | SLJIT_ASSERT(!(inp_flags & WRITE_BACK)); |
| 1550 | argw = compiler->cache_argw - argw; |
| 1551 | GETPUT_ARG_DATA_TRANSFER(0, 0, reg, TMP_REG3, argw); |
| 1552 | return SLJIT_SUCCESS; |
| 1553 | } |
| 1554 | |
| 1555 | if ((compiler->cache_arg & SLJIT_IMM) && compiler->cache_argw == argw) { |
| 1556 | TEST_WRITE_BACK(); |
| 1557 | EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, inp_flags & WRITE_BACK, reg, arg & 0xf, RM(TMP_REG3) | (max_delta & 0xf00 ? SRC2_IMM : 0))); |
| 1558 | return SLJIT_SUCCESS; |
| 1559 | } |
| 1560 | |
| 1561 | if (argw == next_argw && (next_arg & SLJIT_MEM)) { |
| 1562 | SLJIT_ASSERT(inp_flags & LOAD_DATA); |
| 1563 | FAIL_IF(load_immediate(compiler, TMP_REG3, argw)); |
| 1564 | |
| 1565 | compiler->cache_arg = SLJIT_IMM; |
| 1566 | compiler->cache_argw = argw; |
| 1567 | |
| 1568 | TEST_WRITE_BACK(); |
| 1569 | EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, inp_flags & WRITE_BACK, reg, arg & 0xf, RM(TMP_REG3) | (max_delta & 0xf00 ? SRC2_IMM : 0))); |
| 1570 | return SLJIT_SUCCESS; |
| 1571 | } |
| 1572 | |
| 1573 | if (arg == next_arg && !(inp_flags & WRITE_BACK) && ((sljit_uw)argw - (sljit_uw)next_argw <= (sljit_uw)max_delta || (sljit_uw)next_argw - (sljit_uw)argw <= (sljit_uw)max_delta)) { |
| 1574 | SLJIT_ASSERT(inp_flags & LOAD_DATA); |
| 1575 | FAIL_IF(load_immediate(compiler, TMP_REG3, argw)); |
| 1576 | EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(ADD_DP, 0, TMP_REG3, TMP_REG3, reg_map[arg & 0xf])); |
| 1577 | |
| 1578 | compiler->cache_arg = arg; |
| 1579 | compiler->cache_argw = argw; |
| 1580 | |
| 1581 | GETPUT_ARG_DATA_TRANSFER(1, 0, reg, TMP_REG3, 0); |
| 1582 | return SLJIT_SUCCESS; |
| 1583 | } |
| 1584 | |
| 1585 | if ((arg & 0xf) == tmp_r) { |
| 1586 | compiler->cache_arg = SLJIT_IMM; |
| 1587 | compiler->cache_argw = argw; |
| 1588 | tmp_r = TMP_REG3; |
| 1589 | } |
| 1590 | |
| 1591 | FAIL_IF(load_immediate(compiler, tmp_r, argw)); |
| 1592 | EMIT_INSTRUCTION(EMIT_DATA_TRANSFER(inp_flags, 1, inp_flags & WRITE_BACK, reg, arg & 0xf, reg_map[tmp_r] | (max_delta & 0xf00 ? SRC2_IMM : 0))); |
| 1593 | return SLJIT_SUCCESS; |
| 1594 | } |
| 1595 | |
| 1596 | static int emit_op(struct sljit_compiler *compiler, int op, int inp_flags, |
| 1597 | int dst, sljit_w dstw, |
| 1598 | int src1, sljit_w src1w, |
| 1599 | int src2, sljit_w src2w) |
| 1600 | { |
| 1601 | /* arg1 goes to TMP_REG1 or src reg |
| 1602 | arg2 goes to TMP_REG2, imm or src reg |
| 1603 | TMP_REG3 can be used for caching |
| 1604 | result goes to TMP_REG2, so put result can use TMP_REG1 and TMP_REG3. */ |
| 1605 | |
| 1606 | /* We prefers register and simple consts. */ |
| 1607 | int dst_r; |
| 1608 | int src1_r; |
| 1609 | int src2_r = 0; |
| 1610 | int sugg_src2_r = TMP_REG2; |
| 1611 | int flags = GET_FLAGS(op) ? SET_FLAGS : 0; |
| 1612 | |
| 1613 | compiler->cache_arg = 0; |
| 1614 | compiler->cache_argw = 0; |
| 1615 | |
| 1616 | /* Destination check. */ |
| 1617 | if (dst >= SLJIT_TEMPORARY_REG1 && dst <= TMP_REG3) { |
| 1618 | dst_r = dst; |
| 1619 | flags |= REG_DEST; |
| 1620 | if (op >= SLJIT_MOV && op <= SLJIT_MOVU_SI) |
| 1621 | sugg_src2_r = dst_r; |
| 1622 | } |
| 1623 | else if (dst == SLJIT_UNUSED) { |
| 1624 | if (op >= SLJIT_MOV && op <= SLJIT_MOVU_SI && !(src2 & SLJIT_MEM)) |
| 1625 | return SLJIT_SUCCESS; |
| 1626 | dst_r = TMP_REG2; |
| 1627 | } |
| 1628 | else { |
| 1629 | SLJIT_ASSERT(dst & SLJIT_MEM); |
| 1630 | if (getput_arg_fast(compiler, inp_flags | ARG_TEST, TMP_REG2, dst, dstw)) { |
| 1631 | flags |= FAST_DEST; |
| 1632 | dst_r = TMP_REG2; |
| 1633 | } |
| 1634 | else { |
| 1635 | flags |= SLOW_DEST; |
| 1636 | dst_r = 0; |
| 1637 | } |
| 1638 | } |
| 1639 | |
| 1640 | /* Source 1. */ |
| 1641 | if (src1 >= SLJIT_TEMPORARY_REG1 && src1 <= TMP_REG3) |
| 1642 | src1_r = src1; |
| 1643 | else if (src2 >= SLJIT_TEMPORARY_REG1 && src2 <= TMP_REG3) { |
| 1644 | flags |= ARGS_SWAPPED; |
| 1645 | src1_r = src2; |
| 1646 | src2 = src1; |
| 1647 | src2w = src1w; |
| 1648 | } |
| 1649 | else { |
| 1650 | if ((inp_flags & ALLOW_ANY_IMM) && (src1 & SLJIT_IMM)) { |
| 1651 | /* The second check will generate a hit. */ |
| 1652 | src2_r = get_immediate(src1w); |
| 1653 | if (src2_r) { |
| 1654 | flags |= ARGS_SWAPPED; |
| 1655 | src1 = src2; |
| 1656 | src1w = src2w; |
| 1657 | } |
| 1658 | if (inp_flags & ALLOW_INV_IMM) { |
| 1659 | src2_r = get_immediate(~src1w); |
| 1660 | if (src2_r) { |
| 1661 | flags |= ARGS_SWAPPED | INV_IMM; |
| 1662 | src1 = src2; |
| 1663 | src1w = src2w; |
| 1664 | } |
| 1665 | } |
| 1666 | } |
| 1667 | |
| 1668 | src1_r = 0; |
| 1669 | if (getput_arg_fast(compiler, inp_flags | LOAD_DATA, TMP_REG1, src1, src1w)) { |
| 1670 | FAIL_IF(compiler->error); |
| 1671 | src1_r = TMP_REG1; |
| 1672 | } |
| 1673 | } |
| 1674 | |
| 1675 | /* Source 2. */ |
| 1676 | if (src2_r == 0) { |
| 1677 | if (src2 >= SLJIT_TEMPORARY_REG1 && src2 <= TMP_REG3) { |
| 1678 | src2_r = src2; |
| 1679 | flags |= REG_SOURCE; |
| 1680 | if (!(flags & REG_DEST) && op >= SLJIT_MOV && op <= SLJIT_MOVU_SI) |
| 1681 | dst_r = src2_r; |
| 1682 | } |
| 1683 | else do { /* do { } while(0) is used because of breaks. */ |
| 1684 | if ((inp_flags & ALLOW_ANY_IMM) && (src2 & SLJIT_IMM)) { |
| 1685 | src2_r = get_immediate(src2w); |
| 1686 | if (src2_r) |
| 1687 | break; |
| 1688 | if (inp_flags & ALLOW_INV_IMM) { |
| 1689 | src2_r = get_immediate(~src2w); |
| 1690 | if (src2_r) { |
| 1691 | flags |= INV_IMM; |
| 1692 | break; |
| 1693 | } |
| 1694 | } |
| 1695 | } |
| 1696 | |
| 1697 | /* src2_r is 0. */ |
| 1698 | if (getput_arg_fast(compiler, inp_flags | LOAD_DATA, sugg_src2_r, src2, src2w)) { |
| 1699 | FAIL_IF(compiler->error); |
| 1700 | src2_r = sugg_src2_r; |
| 1701 | } |
| 1702 | } while (0); |
| 1703 | } |
| 1704 | |
| 1705 | /* src1_r, src2_r and dst_r can be zero (=unprocessed) or non-zero. |
| 1706 | If they are zero, they must not be registers. */ |
| 1707 | if (src1_r == 0 && src2_r == 0 && dst_r == 0) { |
| 1708 | if (!can_cache(src1, src1w, src2, src2w) && can_cache(src1, src1w, dst, dstw)) { |
| 1709 | SLJIT_ASSERT(!(flags & ARGS_SWAPPED)); |
| 1710 | flags |= ARGS_SWAPPED; |
| 1711 | FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG1, src2, src2w, src1, src1w)); |
| 1712 | FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG2, src1, src1w, dst, dstw)); |
| 1713 | } |
| 1714 | else { |
| 1715 | FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG1, src1, src1w, src2, src2w)); |
| 1716 | FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG2, src2, src2w, dst, dstw)); |
| 1717 | } |
| 1718 | src1_r = TMP_REG1; |
| 1719 | src2_r = TMP_REG2; |
| 1720 | } |
| 1721 | else if (src1_r == 0 && src2_r == 0) { |
| 1722 | FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG1, src1, src1w, src2, src2w)); |
| 1723 | src1_r = TMP_REG1; |
| 1724 | } |
| 1725 | else if (src1_r == 0 && dst_r == 0) { |
| 1726 | FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG1, src1, src1w, dst, dstw)); |
| 1727 | src1_r = TMP_REG1; |
| 1728 | } |
| 1729 | else if (src2_r == 0 && dst_r == 0) { |
| 1730 | FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, sugg_src2_r, src2, src2w, dst, dstw)); |
| 1731 | src2_r = sugg_src2_r; |
| 1732 | } |
| 1733 | |
| 1734 | if (dst_r == 0) |
| 1735 | dst_r = TMP_REG2; |
| 1736 | |
| 1737 | if (src1_r == 0) { |
| 1738 | FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, TMP_REG1, src1, src1w, 0, 0)); |
| 1739 | src1_r = TMP_REG1; |
| 1740 | } |
| 1741 | |
| 1742 | if (src2_r == 0) { |
| 1743 | FAIL_IF(getput_arg(compiler, inp_flags | LOAD_DATA, sugg_src2_r, src2, src2w, 0, 0)); |
| 1744 | src2_r = sugg_src2_r; |
| 1745 | } |
| 1746 | |
| 1747 | FAIL_IF(emit_single_op(compiler, op, flags, dst_r, src1_r, src2_r)); |
| 1748 | |
| 1749 | if (flags & (FAST_DEST | SLOW_DEST)) { |
| 1750 | if (flags & FAST_DEST) |
| 1751 | FAIL_IF(getput_arg_fast(compiler, inp_flags, dst_r, dst, dstw)); |
| 1752 | else |
| 1753 | FAIL_IF(getput_arg(compiler, inp_flags, dst_r, dst, dstw, 0, 0)); |
| 1754 | } |
| 1755 | return SLJIT_SUCCESS; |
| 1756 | } |
| 1757 | |
| 1758 | SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_op0(struct sljit_compiler *compiler, int op) |
| 1759 | { |
| 1760 | CHECK_ERROR(); |
| 1761 | check_sljit_emit_op0(compiler, op); |
| 1762 | |
| 1763 | op = GET_OPCODE(op); |
| 1764 | switch (op) { |
| 1765 | case SLJIT_BREAKPOINT: |
| 1766 | EMIT_INSTRUCTION(DEBUGGER); |
| 1767 | break; |
| 1768 | case SLJIT_NOP: |
| 1769 | EMIT_INSTRUCTION(NOP); |
| 1770 | break; |
| 1771 | } |
| 1772 | |
| 1773 | return SLJIT_SUCCESS; |
| 1774 | } |
| 1775 | |
| 1776 | SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_op1(struct sljit_compiler *compiler, int op, |
| 1777 | int dst, sljit_w dstw, |
| 1778 | int src, sljit_w srcw) |
| 1779 | { |
| 1780 | CHECK_ERROR(); |
| 1781 | check_sljit_emit_op1(compiler, op, dst, dstw, src, srcw); |
| 1782 | |
| 1783 | switch (GET_OPCODE(op)) { |
| 1784 | case SLJIT_MOV: |
| 1785 | case SLJIT_MOV_UI: |
| 1786 | case SLJIT_MOV_SI: |
| 1787 | return emit_op(compiler, SLJIT_MOV, ALLOW_ANY_IMM, dst, dstw, TMP_REG1, 0, src, srcw); |
| 1788 | |
| 1789 | case SLJIT_MOV_UB: |
| 1790 | return emit_op(compiler, SLJIT_MOV_UB, ALLOW_ANY_IMM | BYTE_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (unsigned char)srcw : srcw); |
| 1791 | |
| 1792 | case SLJIT_MOV_SB: |
| 1793 | return emit_op(compiler, SLJIT_MOV_SB, ALLOW_ANY_IMM | SIGNED_DATA | BYTE_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (signed char)srcw : srcw); |
| 1794 | |
| 1795 | case SLJIT_MOV_UH: |
| 1796 | return emit_op(compiler, SLJIT_MOV_UH, ALLOW_ANY_IMM | HALF_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (unsigned short)srcw : srcw); |
| 1797 | |
| 1798 | case SLJIT_MOV_SH: |
| 1799 | return emit_op(compiler, SLJIT_MOV_SH, ALLOW_ANY_IMM | SIGNED_DATA | HALF_DATA, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (signed short)srcw : srcw); |
| 1800 | |
| 1801 | case SLJIT_MOVU: |
| 1802 | case SLJIT_MOVU_UI: |
| 1803 | case SLJIT_MOVU_SI: |
| 1804 | return emit_op(compiler, SLJIT_MOV, ALLOW_ANY_IMM | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, srcw); |
| 1805 | |
| 1806 | case SLJIT_MOVU_UB: |
| 1807 | return emit_op(compiler, SLJIT_MOV_UB, ALLOW_ANY_IMM | BYTE_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (unsigned char)srcw : srcw); |
| 1808 | |
| 1809 | case SLJIT_MOVU_SB: |
| 1810 | return emit_op(compiler, SLJIT_MOV_SB, ALLOW_ANY_IMM | SIGNED_DATA | BYTE_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (signed char)srcw : srcw); |
| 1811 | |
| 1812 | case SLJIT_MOVU_UH: |
| 1813 | return emit_op(compiler, SLJIT_MOV_UH, ALLOW_ANY_IMM | HALF_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (unsigned short)srcw : srcw); |
| 1814 | |
| 1815 | case SLJIT_MOVU_SH: |
| 1816 | return emit_op(compiler, SLJIT_MOV_SH, ALLOW_ANY_IMM | SIGNED_DATA | HALF_DATA | WRITE_BACK, dst, dstw, TMP_REG1, 0, src, (src & SLJIT_IMM) ? (signed short)srcw : srcw); |
| 1817 | |
| 1818 | case SLJIT_NOT: |
| 1819 | return emit_op(compiler, op, ALLOW_ANY_IMM, dst, dstw, TMP_REG1, 0, src, srcw); |
| 1820 | |
| 1821 | case SLJIT_NEG: |
| 1822 | #if (defined SLJIT_VERBOSE && SLJIT_VERBOSE) || (defined SLJIT_DEBUG && SLJIT_DEBUG) |
| 1823 | compiler->skip_checks = 1; |
| 1824 | #endif |
| 1825 | return sljit_emit_op2(compiler, SLJIT_SUB | GET_FLAGS(op), dst, dstw, SLJIT_IMM, 0, src, srcw); |
| 1826 | |
| 1827 | case SLJIT_CLZ: |
| 1828 | return emit_op(compiler, op, 0, dst, dstw, TMP_REG1, 0, src, srcw); |
| 1829 | } |
| 1830 | |
| 1831 | return SLJIT_SUCCESS; |
| 1832 | } |
| 1833 | |
| 1834 | SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_op2(struct sljit_compiler *compiler, int op, |
| 1835 | int dst, sljit_w dstw, |
| 1836 | int src1, sljit_w src1w, |
| 1837 | int src2, sljit_w src2w) |
| 1838 | { |
| 1839 | CHECK_ERROR(); |
| 1840 | check_sljit_emit_op2(compiler, op, dst, dstw, src1, src1w, src2, src2w); |
| 1841 | |
| 1842 | switch (GET_OPCODE(op)) { |
| 1843 | case SLJIT_ADD: |
| 1844 | case SLJIT_ADDC: |
| 1845 | case SLJIT_SUB: |
| 1846 | case SLJIT_SUBC: |
| 1847 | case SLJIT_OR: |
| 1848 | case SLJIT_XOR: |
| 1849 | return emit_op(compiler, op, ALLOW_IMM, dst, dstw, src1, src1w, src2, src2w); |
| 1850 | |
| 1851 | case SLJIT_MUL: |
| 1852 | return emit_op(compiler, op, 0, dst, dstw, src1, src1w, src2, src2w); |
| 1853 | |
| 1854 | case SLJIT_AND: |
| 1855 | return emit_op(compiler, op, ALLOW_ANY_IMM, dst, dstw, src1, src1w, src2, src2w); |
| 1856 | |
| 1857 | case SLJIT_SHL: |
| 1858 | case SLJIT_LSHR: |
| 1859 | case SLJIT_ASHR: |
| 1860 | if (src2 & SLJIT_IMM) { |
| 1861 | compiler->shift_imm = src2w & 0x1f; |
| 1862 | return emit_op(compiler, op, 0, dst, dstw, TMP_REG1, 0, src1, src1w); |
| 1863 | } |
| 1864 | else { |
| 1865 | compiler->shift_imm = 0x20; |
| 1866 | return emit_op(compiler, op, 0, dst, dstw, src1, src1w, src2, src2w); |
| 1867 | } |
| 1868 | } |
| 1869 | |
| 1870 | return SLJIT_SUCCESS; |
| 1871 | } |
| 1872 | |
| 1873 | /* --------------------------------------------------------------------- */ |
| 1874 | /* Floating point operators */ |
| 1875 | /* --------------------------------------------------------------------- */ |
| 1876 | |
| 1877 | #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) |
| 1878 | |
| 1879 | /* 0 - no fpu |
| 1880 | 1 - vfp */ |
| 1881 | static int arm_fpu_type = -1; |
| 1882 | |
| 1883 | static void init_compiler() |
| 1884 | { |
| 1885 | if (arm_fpu_type != -1) |
| 1886 | return; |
| 1887 | |
| 1888 | /* TODO: Only the OS can help to determine the correct fpu type. */ |
| 1889 | arm_fpu_type = 1; |
| 1890 | } |
| 1891 | |
| 1892 | SLJIT_API_FUNC_ATTRIBUTE int sljit_is_fpu_available(void) |
| 1893 | { |
| 1894 | if (arm_fpu_type == -1) |
| 1895 | init_compiler(); |
| 1896 | return arm_fpu_type; |
| 1897 | } |
| 1898 | |
| 1899 | #else |
| 1900 | |
| 1901 | #define arm_fpu_type 1 |
| 1902 | |
| 1903 | SLJIT_API_FUNC_ATTRIBUTE int sljit_is_fpu_available(void) |
| 1904 | { |
| 1905 | /* Always available. */ |
| 1906 | return 1; |
| 1907 | } |
| 1908 | |
| 1909 | #endif |
| 1910 | |
| 1911 | #define EMIT_FPU_DATA_TRANSFER(add, load, base, freg, offs) \ |
| 1912 | (VSTR | ((add) << 23) | ((load) << 20) | (reg_map[base] << 16) | (freg << 12) | (offs)) |
| 1913 | #define EMIT_FPU_OPERATION(opcode, dst, src1, src2) \ |
| 1914 | ((opcode) | ((dst) << 12) | (src1) | ((src2) << 16)) |
| 1915 | |
| 1916 | static int emit_fpu_data_transfer(struct sljit_compiler *compiler, int fpu_reg, int load, int arg, sljit_w argw) |
| 1917 | { |
| 1918 | SLJIT_ASSERT(arg & SLJIT_MEM); |
| 1919 | |
| 1920 | /* Fast loads and stores. */ |
| 1921 | if ((arg & 0xf) && !(arg & 0xf0) && (argw & 0x3) == 0) { |
| 1922 | if (argw >= 0 && argw <= 0x3ff) { |
| 1923 | EMIT_INSTRUCTION(EMIT_FPU_DATA_TRANSFER(1, load, arg & 0xf, fpu_reg, argw >> 2)); |
| 1924 | return SLJIT_SUCCESS; |
| 1925 | } |
| 1926 | if (argw < 0 && argw >= -0x3ff) { |
| 1927 | EMIT_INSTRUCTION(EMIT_FPU_DATA_TRANSFER(0, load, arg & 0xf, fpu_reg, (-argw) >> 2)); |
| 1928 | return SLJIT_SUCCESS; |
| 1929 | } |
| 1930 | if (argw >= 0 && argw <= 0x3ffff) { |
| 1931 | SLJIT_ASSERT(get_immediate(argw & 0x3fc00)); |
| 1932 | EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(ADD_DP, 0, TMP_REG1, arg & 0xf, get_immediate(argw & 0x3fc00))); |
| 1933 | argw &= 0x3ff; |
| 1934 | EMIT_INSTRUCTION(EMIT_FPU_DATA_TRANSFER(1, load, TMP_REG1, fpu_reg, argw >> 2)); |
| 1935 | return SLJIT_SUCCESS; |
| 1936 | } |
| 1937 | if (argw < 0 && argw >= -0x3ffff) { |
| 1938 | argw = -argw; |
| 1939 | SLJIT_ASSERT(get_immediate(argw & 0x3fc00)); |
| 1940 | EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(SUB_DP, 0, TMP_REG1, arg & 0xf, get_immediate(argw & 0x3fc00))); |
| 1941 | argw &= 0x3ff; |
| 1942 | EMIT_INSTRUCTION(EMIT_FPU_DATA_TRANSFER(0, load, TMP_REG1, fpu_reg, argw >> 2)); |
| 1943 | return SLJIT_SUCCESS; |
| 1944 | } |
| 1945 | } |
| 1946 | |
| 1947 | if (arg & 0xf0) { |
| 1948 | EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(ADD_DP, 0, TMP_REG1, arg & 0xf, RM((arg >> 4) & 0xf) | ((argw & 0x3) << 7))); |
| 1949 | EMIT_INSTRUCTION(EMIT_FPU_DATA_TRANSFER(1, load, TMP_REG1, fpu_reg, 0)); |
| 1950 | return SLJIT_SUCCESS; |
| 1951 | } |
| 1952 | |
| 1953 | if (compiler->cache_arg == arg && ((argw - compiler->cache_argw) & 0x3) == 0) { |
| 1954 | if (((sljit_uw)argw - (sljit_uw)compiler->cache_argw) <= 0x3ff) { |
| 1955 | EMIT_INSTRUCTION(EMIT_FPU_DATA_TRANSFER(1, load, TMP_REG3, fpu_reg, (argw - compiler->cache_argw) >> 2)); |
| 1956 | return SLJIT_SUCCESS; |
| 1957 | } |
| 1958 | if (((sljit_uw)compiler->cache_argw - (sljit_uw)argw) <= 0x3ff) { |
| 1959 | EMIT_INSTRUCTION(EMIT_FPU_DATA_TRANSFER(0, load, TMP_REG3, fpu_reg, (compiler->cache_argw - argw) >> 2)); |
| 1960 | return SLJIT_SUCCESS; |
| 1961 | } |
| 1962 | } |
| 1963 | |
| 1964 | compiler->cache_arg = arg; |
| 1965 | compiler->cache_argw = argw; |
| 1966 | if (arg & 0xf) { |
| 1967 | FAIL_IF(load_immediate(compiler, TMP_REG1, argw)); |
| 1968 | EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(ADD_DP, 0, TMP_REG3, arg & 0xf, reg_map[TMP_REG1])); |
| 1969 | } |
| 1970 | else |
| 1971 | FAIL_IF(load_immediate(compiler, TMP_REG3, argw)); |
| 1972 | |
| 1973 | EMIT_INSTRUCTION(EMIT_FPU_DATA_TRANSFER(1, load, TMP_REG3, fpu_reg, 0)); |
| 1974 | return SLJIT_SUCCESS; |
| 1975 | } |
| 1976 | |
| 1977 | SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_fop1(struct sljit_compiler *compiler, int op, |
| 1978 | int dst, sljit_w dstw, |
| 1979 | int src, sljit_w srcw) |
| 1980 | { |
| 1981 | int dst_freg; |
| 1982 | |
| 1983 | CHECK_ERROR(); |
| 1984 | check_sljit_emit_fop1(compiler, op, dst, dstw, src, srcw); |
| 1985 | |
| 1986 | compiler->cache_arg = 0; |
| 1987 | compiler->cache_argw = 0; |
| 1988 | |
| 1989 | if (GET_OPCODE(op) == SLJIT_FCMP) { |
| 1990 | if (dst > SLJIT_FLOAT_REG4) { |
| 1991 | FAIL_IF(emit_fpu_data_transfer(compiler, TMP_FREG1, 1, dst, dstw)); |
| 1992 | dst = TMP_FREG1; |
| 1993 | } |
| 1994 | if (src > SLJIT_FLOAT_REG4) { |
| 1995 | FAIL_IF(emit_fpu_data_transfer(compiler, TMP_FREG2, 1, src, srcw)); |
| 1996 | src = TMP_FREG2; |
| 1997 | } |
| 1998 | EMIT_INSTRUCTION(VCMP_F64 | (dst << 12) | src); |
| 1999 | EMIT_INSTRUCTION(VMRS); |
| 2000 | return SLJIT_SUCCESS; |
| 2001 | } |
| 2002 | |
| 2003 | dst_freg = (dst > SLJIT_FLOAT_REG4) ? TMP_FREG1 : dst; |
| 2004 | |
| 2005 | if (src > SLJIT_FLOAT_REG4) { |
| 2006 | FAIL_IF(emit_fpu_data_transfer(compiler, dst_freg, 1, src, srcw)); |
| 2007 | src = dst_freg; |
| 2008 | } |
| 2009 | |
| 2010 | switch (op) { |
| 2011 | case SLJIT_FMOV: |
| 2012 | if (src != dst_freg && dst_freg != TMP_FREG1) |
| 2013 | EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VMOV_F64, dst_freg, src, 0)); |
| 2014 | break; |
| 2015 | case SLJIT_FNEG: |
| 2016 | EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VNEG_F64, dst_freg, src, 0)); |
| 2017 | break; |
| 2018 | case SLJIT_FABS: |
| 2019 | EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VABS_F64, dst_freg, src, 0)); |
| 2020 | break; |
| 2021 | } |
| 2022 | |
| 2023 | if (dst_freg == TMP_FREG1) |
| 2024 | FAIL_IF(emit_fpu_data_transfer(compiler, src, 0, dst, dstw)); |
| 2025 | |
| 2026 | return SLJIT_SUCCESS; |
| 2027 | } |
| 2028 | |
| 2029 | SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_fop2(struct sljit_compiler *compiler, int op, |
| 2030 | int dst, sljit_w dstw, |
| 2031 | int src1, sljit_w src1w, |
| 2032 | int src2, sljit_w src2w) |
| 2033 | { |
| 2034 | int dst_freg; |
| 2035 | |
| 2036 | CHECK_ERROR(); |
| 2037 | check_sljit_emit_fop2(compiler, op, dst, dstw, src1, src1w, src2, src2w); |
| 2038 | |
| 2039 | compiler->cache_arg = 0; |
| 2040 | compiler->cache_argw = 0; |
| 2041 | |
| 2042 | dst_freg = (dst > SLJIT_FLOAT_REG4) ? TMP_FREG1 : dst; |
| 2043 | |
| 2044 | if (src2 > SLJIT_FLOAT_REG4) { |
| 2045 | FAIL_IF(emit_fpu_data_transfer(compiler, TMP_FREG2, 1, src2, src2w)); |
| 2046 | src2 = TMP_FREG2; |
| 2047 | } |
| 2048 | |
| 2049 | if (src1 > SLJIT_FLOAT_REG4) { |
| 2050 | FAIL_IF(emit_fpu_data_transfer(compiler, TMP_FREG1, 1, src1, src1w)); |
| 2051 | src1 = TMP_FREG1; |
| 2052 | } |
| 2053 | |
| 2054 | switch (op) { |
| 2055 | case SLJIT_FADD: |
| 2056 | EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VADD_F64, dst_freg, src2, src1)); |
| 2057 | break; |
| 2058 | |
| 2059 | case SLJIT_FSUB: |
| 2060 | EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VSUB_F64, dst_freg, src2, src1)); |
| 2061 | break; |
| 2062 | |
| 2063 | case SLJIT_FMUL: |
| 2064 | EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VMUL_F64, dst_freg, src2, src1)); |
| 2065 | break; |
| 2066 | |
| 2067 | case SLJIT_FDIV: |
| 2068 | EMIT_INSTRUCTION(EMIT_FPU_OPERATION(VDIV_F64, dst_freg, src2, src1)); |
| 2069 | break; |
| 2070 | } |
| 2071 | |
| 2072 | if (dst_freg == TMP_FREG1) |
| 2073 | FAIL_IF(emit_fpu_data_transfer(compiler, TMP_FREG1, 0, dst, dstw)); |
| 2074 | |
| 2075 | return SLJIT_SUCCESS; |
| 2076 | } |
| 2077 | |
| 2078 | /* --------------------------------------------------------------------- */ |
| 2079 | /* Other instructions */ |
| 2080 | /* --------------------------------------------------------------------- */ |
| 2081 | |
| 2082 | SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_fast_enter(struct sljit_compiler *compiler, int dst, sljit_w dstw, int args, int temporaries, int generals, int local_size) |
| 2083 | { |
| 2084 | int size; |
| 2085 | |
| 2086 | CHECK_ERROR(); |
| 2087 | check_sljit_emit_fast_enter(compiler, dst, dstw, args, temporaries, generals, local_size); |
| 2088 | |
| 2089 | compiler->temporaries = temporaries; |
| 2090 | compiler->generals = generals; |
| 2091 | |
| 2092 | size = (1 + generals) * sizeof(sljit_uw); |
| 2093 | if (temporaries >= 4) |
| 2094 | size += (temporaries - 3) * sizeof(sljit_uw); |
| 2095 | local_size += size; |
| 2096 | local_size = (local_size + 7) & ~7; |
| 2097 | local_size -= size; |
| 2098 | compiler->local_size = local_size; |
| 2099 | |
| 2100 | if (dst >= SLJIT_TEMPORARY_REG1 && dst <= SLJIT_NO_REGISTERS) |
| 2101 | return push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, 0, dst, SLJIT_UNUSED, RM(TMP_REG3))); |
| 2102 | else if (dst & SLJIT_MEM) { |
| 2103 | if (getput_arg_fast(compiler, WORD_DATA, TMP_REG3, dst, dstw)) |
| 2104 | return compiler->error; |
| 2105 | EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG2, SLJIT_UNUSED, RM(TMP_REG3))); |
| 2106 | compiler->cache_arg = 0; |
| 2107 | compiler->cache_argw = 0; |
| 2108 | return getput_arg(compiler, WORD_DATA, TMP_REG2, dst, dstw, 0, 0); |
| 2109 | } |
| 2110 | |
| 2111 | return SLJIT_SUCCESS; |
| 2112 | } |
| 2113 | |
| 2114 | SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_fast_return(struct sljit_compiler *compiler, int src, sljit_w srcw) |
| 2115 | { |
| 2116 | CHECK_ERROR(); |
| 2117 | check_sljit_emit_fast_return(compiler, src, srcw); |
| 2118 | |
| 2119 | if (src >= SLJIT_TEMPORARY_REG1 && src <= SLJIT_NO_REGISTERS) |
| 2120 | EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG3, SLJIT_UNUSED, RM(src))); |
| 2121 | else if (src & SLJIT_MEM) { |
| 2122 | if (getput_arg_fast(compiler, WORD_DATA | LOAD_DATA, TMP_REG3, src, srcw)) |
| 2123 | FAIL_IF(compiler->error); |
| 2124 | else { |
| 2125 | compiler->cache_arg = 0; |
| 2126 | compiler->cache_argw = 0; |
| 2127 | FAIL_IF(getput_arg(compiler, WORD_DATA | LOAD_DATA, TMP_REG2, src, srcw, 0, 0)); |
| 2128 | EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG3, SLJIT_UNUSED, RM(TMP_REG2))); |
| 2129 | } |
| 2130 | } |
| 2131 | else if (src & SLJIT_IMM) |
| 2132 | FAIL_IF(load_immediate(compiler, TMP_REG3, srcw)); |
| 2133 | return push_inst(compiler, BLX | RM(TMP_REG3)); |
| 2134 | } |
| 2135 | |
| 2136 | /* --------------------------------------------------------------------- */ |
| 2137 | /* Conditional instructions */ |
| 2138 | /* --------------------------------------------------------------------- */ |
| 2139 | |
| 2140 | static sljit_uw get_cc(int type) |
| 2141 | { |
| 2142 | switch (type) { |
| 2143 | case SLJIT_C_EQUAL: |
| 2144 | case SLJIT_C_MUL_NOT_OVERFLOW: |
| 2145 | case SLJIT_C_FLOAT_EQUAL: |
| 2146 | return 0x00000000; |
| 2147 | |
| 2148 | case SLJIT_C_NOT_EQUAL: |
| 2149 | case SLJIT_C_MUL_OVERFLOW: |
| 2150 | case SLJIT_C_FLOAT_NOT_EQUAL: |
| 2151 | return 0x10000000; |
| 2152 | |
| 2153 | case SLJIT_C_LESS: |
| 2154 | case SLJIT_C_FLOAT_LESS: |
| 2155 | return 0x30000000; |
| 2156 | |
| 2157 | case SLJIT_C_GREATER_EQUAL: |
| 2158 | case SLJIT_C_FLOAT_GREATER_EQUAL: |
| 2159 | return 0x20000000; |
| 2160 | |
| 2161 | case SLJIT_C_GREATER: |
| 2162 | case SLJIT_C_FLOAT_GREATER: |
| 2163 | return 0x80000000; |
| 2164 | |
| 2165 | case SLJIT_C_LESS_EQUAL: |
| 2166 | case SLJIT_C_FLOAT_LESS_EQUAL: |
| 2167 | return 0x90000000; |
| 2168 | |
| 2169 | case SLJIT_C_SIG_LESS: |
| 2170 | return 0xb0000000; |
| 2171 | |
| 2172 | case SLJIT_C_SIG_GREATER_EQUAL: |
| 2173 | return 0xa0000000; |
| 2174 | |
| 2175 | case SLJIT_C_SIG_GREATER: |
| 2176 | return 0xc0000000; |
| 2177 | |
| 2178 | case SLJIT_C_SIG_LESS_EQUAL: |
| 2179 | return 0xd0000000; |
| 2180 | |
| 2181 | case SLJIT_C_OVERFLOW: |
| 2182 | case SLJIT_C_FLOAT_NAN: |
| 2183 | return 0x60000000; |
| 2184 | |
| 2185 | case SLJIT_C_NOT_OVERFLOW: |
| 2186 | case SLJIT_C_FLOAT_NOT_NAN: |
| 2187 | return 0x70000000; |
| 2188 | |
| 2189 | default: /* SLJIT_JUMP */ |
| 2190 | return 0xe0000000; |
| 2191 | } |
| 2192 | } |
| 2193 | |
| 2194 | SLJIT_API_FUNC_ATTRIBUTE struct sljit_label* sljit_emit_label(struct sljit_compiler *compiler) |
| 2195 | { |
| 2196 | struct sljit_label *label; |
| 2197 | |
| 2198 | CHECK_ERROR_PTR(); |
| 2199 | check_sljit_emit_label(compiler); |
| 2200 | |
| 2201 | if (compiler->last_label && compiler->last_label->size == compiler->size) |
| 2202 | return compiler->last_label; |
| 2203 | |
| 2204 | label = (struct sljit_label*)ensure_abuf(compiler, sizeof(struct sljit_label)); |
| 2205 | PTR_FAIL_IF(!label); |
| 2206 | set_label(label, compiler); |
| 2207 | return label; |
| 2208 | } |
| 2209 | |
| 2210 | SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_jump(struct sljit_compiler *compiler, int type) |
| 2211 | { |
| 2212 | struct sljit_jump *jump; |
| 2213 | |
| 2214 | CHECK_ERROR_PTR(); |
| 2215 | check_sljit_emit_jump(compiler, type); |
| 2216 | |
| 2217 | jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump)); |
| 2218 | PTR_FAIL_IF(!jump); |
| 2219 | set_jump(jump, compiler, type & SLJIT_REWRITABLE_JUMP); |
| 2220 | type &= 0xff; |
| 2221 | |
| 2222 | /* In ARM, we don't need to touch the arguments. */ |
| 2223 | #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) |
| 2224 | if (type >= SLJIT_FAST_CALL) |
| 2225 | PTR_FAIL_IF(prepare_blx(compiler)); |
| 2226 | PTR_FAIL_IF(push_inst_with_unique_literal(compiler, ((EMIT_DATA_TRANSFER(WORD_DATA | LOAD_DATA, 1, 0, |
| 2227 | type <= SLJIT_JUMP ? TMP_PC : TMP_REG1, TMP_PC, 0)) & ~COND_MASK) | get_cc(type), 0)); |
| 2228 | |
| 2229 | if (jump->flags & SLJIT_REWRITABLE_JUMP) { |
| 2230 | jump->addr = compiler->size; |
| 2231 | compiler->patches++; |
| 2232 | } |
| 2233 | |
| 2234 | if (type >= SLJIT_FAST_CALL) { |
| 2235 | jump->flags |= IS_BL; |
| 2236 | PTR_FAIL_IF(emit_blx(compiler)); |
| 2237 | } |
| 2238 | |
| 2239 | if (!(jump->flags & SLJIT_REWRITABLE_JUMP)) |
| 2240 | jump->addr = compiler->size; |
| 2241 | #else |
| 2242 | if (type >= SLJIT_FAST_CALL) |
| 2243 | jump->flags |= IS_BL; |
| 2244 | PTR_FAIL_IF(emit_imm(compiler, TMP_REG1, 0)); |
| 2245 | PTR_FAIL_IF(push_inst(compiler, (((type <= SLJIT_JUMP ? BX : BLX) | RM(TMP_REG1)) & ~COND_MASK) | get_cc(type))); |
| 2246 | jump->addr = compiler->size; |
| 2247 | #endif |
| 2248 | return jump; |
| 2249 | } |
| 2250 | |
| 2251 | SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_ijump(struct sljit_compiler *compiler, int type, int src, sljit_w srcw) |
| 2252 | { |
| 2253 | struct sljit_jump *jump; |
| 2254 | |
| 2255 | CHECK_ERROR(); |
| 2256 | check_sljit_emit_ijump(compiler, type, src, srcw); |
| 2257 | |
| 2258 | /* In ARM, we don't need to touch the arguments. */ |
| 2259 | if (src & SLJIT_IMM) { |
| 2260 | jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump)); |
| 2261 | FAIL_IF(!jump); |
| 2262 | set_jump(jump, compiler, JUMP_ADDR | ((type >= SLJIT_FAST_CALL) ? IS_BL : 0)); |
| 2263 | jump->u.target = srcw; |
| 2264 | |
| 2265 | #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) |
| 2266 | if (type >= SLJIT_FAST_CALL) |
| 2267 | FAIL_IF(prepare_blx(compiler)); |
| 2268 | FAIL_IF(push_inst_with_unique_literal(compiler, EMIT_DATA_TRANSFER(WORD_DATA | LOAD_DATA, 1, 0, type <= SLJIT_JUMP ? TMP_PC : TMP_REG1, TMP_PC, 0), 0)); |
| 2269 | if (type >= SLJIT_FAST_CALL) |
| 2270 | FAIL_IF(emit_blx(compiler)); |
| 2271 | #else |
| 2272 | FAIL_IF(emit_imm(compiler, TMP_REG1, 0)); |
| 2273 | FAIL_IF(push_inst(compiler, (type <= SLJIT_JUMP ? BX : BLX) | RM(TMP_REG1))); |
| 2274 | #endif |
| 2275 | jump->addr = compiler->size; |
| 2276 | } |
| 2277 | else { |
| 2278 | if (src >= SLJIT_TEMPORARY_REG1 && src <= SLJIT_NO_REGISTERS) |
| 2279 | return push_inst(compiler, (type <= SLJIT_JUMP ? BX : BLX) | RM(src)); |
| 2280 | |
| 2281 | SLJIT_ASSERT(src & SLJIT_MEM); |
| 2282 | FAIL_IF(emit_op(compiler, SLJIT_MOV, ALLOW_ANY_IMM, TMP_REG2, 0, TMP_REG1, 0, src, srcw)); |
| 2283 | return push_inst(compiler, (type <= SLJIT_JUMP ? BX : BLX) | RM(TMP_REG2)); |
| 2284 | } |
| 2285 | |
| 2286 | return SLJIT_SUCCESS; |
| 2287 | } |
| 2288 | |
| 2289 | SLJIT_API_FUNC_ATTRIBUTE int sljit_emit_cond_value(struct sljit_compiler *compiler, int op, int dst, sljit_w dstw, int type) |
| 2290 | { |
| 2291 | int reg; |
| 2292 | sljit_uw cc; |
| 2293 | |
| 2294 | CHECK_ERROR(); |
| 2295 | check_sljit_emit_cond_value(compiler, op, dst, dstw, type); |
| 2296 | |
| 2297 | if (dst == SLJIT_UNUSED) |
| 2298 | return SLJIT_SUCCESS; |
| 2299 | |
| 2300 | cc = get_cc(type); |
| 2301 | if (GET_OPCODE(op) == SLJIT_OR) { |
| 2302 | if (dst >= SLJIT_TEMPORARY_REG1 && dst <= SLJIT_NO_REGISTERS) { |
| 2303 | EMIT_INSTRUCTION((EMIT_DATA_PROCESS_INS(ORR_DP, 0, dst, dst, SRC2_IMM | 1) & ~COND_MASK) | cc); |
| 2304 | if (op & SLJIT_SET_E) |
| 2305 | return push_inst(compiler, EMIT_DATA_PROCESS_INS(MOV_DP, SET_FLAGS, TMP_REG1, SLJIT_UNUSED, RM(dst))); |
| 2306 | return SLJIT_SUCCESS; |
| 2307 | } |
| 2308 | |
| 2309 | EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG1, SLJIT_UNUSED, SRC2_IMM | 0)); |
| 2310 | EMIT_INSTRUCTION((EMIT_DATA_PROCESS_INS(MOV_DP, 0, TMP_REG1, SLJIT_UNUSED, SRC2_IMM | 1) & ~COND_MASK) | cc); |
| 2311 | #if (defined SLJIT_VERBOSE && SLJIT_VERBOSE) || (defined SLJIT_DEBUG && SLJIT_DEBUG) |
| 2312 | compiler->skip_checks = 1; |
| 2313 | #endif |
| 2314 | return emit_op(compiler, op, ALLOW_IMM, dst, dstw, TMP_REG1, 0, dst, dstw); |
| 2315 | } |
| 2316 | |
| 2317 | reg = (dst >= SLJIT_TEMPORARY_REG1 && dst <= SLJIT_NO_REGISTERS) ? dst : TMP_REG2; |
| 2318 | |
| 2319 | EMIT_INSTRUCTION(EMIT_DATA_PROCESS_INS(MOV_DP, 0, reg, SLJIT_UNUSED, SRC2_IMM | 0)); |
| 2320 | EMIT_INSTRUCTION((EMIT_DATA_PROCESS_INS(MOV_DP, 0, reg, SLJIT_UNUSED, SRC2_IMM | 1) & ~COND_MASK) | cc); |
| 2321 | |
| 2322 | if (reg == TMP_REG2) |
| 2323 | return emit_op(compiler, SLJIT_MOV, ALLOW_ANY_IMM, dst, dstw, TMP_REG1, 0, TMP_REG2, 0); |
| 2324 | return SLJIT_SUCCESS; |
| 2325 | } |
| 2326 | |
| 2327 | SLJIT_API_FUNC_ATTRIBUTE struct sljit_const* sljit_emit_const(struct sljit_compiler *compiler, int dst, sljit_w dstw, sljit_w init_value) |
| 2328 | { |
| 2329 | struct sljit_const *const_; |
| 2330 | int reg; |
| 2331 | |
| 2332 | CHECK_ERROR_PTR(); |
| 2333 | check_sljit_emit_const(compiler, dst, dstw, init_value); |
| 2334 | |
| 2335 | const_ = (struct sljit_const*)ensure_abuf(compiler, sizeof(struct sljit_const)); |
| 2336 | PTR_FAIL_IF(!const_); |
| 2337 | |
| 2338 | reg = (dst >= SLJIT_TEMPORARY_REG1 && dst <= SLJIT_NO_REGISTERS) ? dst : TMP_REG2; |
| 2339 | |
| 2340 | #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) |
| 2341 | PTR_FAIL_IF(push_inst_with_unique_literal(compiler, EMIT_DATA_TRANSFER(WORD_DATA | LOAD_DATA, 1, 0, reg, TMP_PC, 0), init_value)); |
| 2342 | compiler->patches++; |
| 2343 | #else |
| 2344 | PTR_FAIL_IF(emit_imm(compiler, reg, init_value)); |
| 2345 | #endif |
| 2346 | set_const(const_, compiler); |
| 2347 | |
| 2348 | if (reg == TMP_REG2 && dst != SLJIT_UNUSED) |
| 2349 | if (emit_op(compiler, SLJIT_MOV, ALLOW_ANY_IMM, dst, dstw, TMP_REG1, 0, TMP_REG2, 0)) |
| 2350 | return NULL; |
| 2351 | return const_; |
| 2352 | } |
| 2353 | |
| 2354 | SLJIT_API_FUNC_ATTRIBUTE void sljit_set_jump_addr(sljit_uw addr, sljit_uw new_addr) |
| 2355 | { |
| 2356 | inline_set_jump_addr(addr, new_addr, 1); |
| 2357 | } |
| 2358 | |
| 2359 | SLJIT_API_FUNC_ATTRIBUTE void sljit_set_const(sljit_uw addr, sljit_w new_constant) |
| 2360 | { |
| 2361 | inline_set_const(addr, new_constant, 1); |
| 2362 | } |