| 1 | /* gameplaySP |
| 2 | * |
| 3 | * Copyright (C) 2006 Exophase <exophase@gmail.com> |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or |
| 6 | * modify it under the terms of the GNU General Public License as |
| 7 | * published by the Free Software Foundation; either version 2 of |
| 8 | * the License, or (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 13 | * General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 18 | */ |
| 19 | |
| 20 | // Important todo: |
| 21 | // - stm reglist writeback when base is in the list needs adjustment |
| 22 | // - block memory needs psr swapping and user mode reg swapping |
| 23 | |
| 24 | #include <stdio.h> |
| 25 | #include "common.h" |
| 26 | |
| 27 | u32 memory_region_access_read_u8[16]; |
| 28 | u32 memory_region_access_read_s8[16]; |
| 29 | u32 memory_region_access_read_u16[16]; |
| 30 | u32 memory_region_access_read_s16[16]; |
| 31 | u32 memory_region_access_read_u32[16]; |
| 32 | u32 memory_region_access_write_u8[16]; |
| 33 | u32 memory_region_access_write_u16[16]; |
| 34 | u32 memory_region_access_write_u32[16]; |
| 35 | u32 memory_reads_u8; |
| 36 | u32 memory_reads_s8; |
| 37 | u32 memory_reads_u16; |
| 38 | u32 memory_reads_s16; |
| 39 | u32 memory_reads_u32; |
| 40 | u32 memory_writes_u8; |
| 41 | u32 memory_writes_u16; |
| 42 | u32 memory_writes_u32; |
| 43 | |
| 44 | const u8 bit_count[256] = |
| 45 | { |
| 46 | 0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4, 1, 2, 2, 3, 2, 3, 3, |
| 47 | 4, 2, 3, 3, 4, 3, 4, 4, 5, 1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, |
| 48 | 4, 5, 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, 1, 2, 2, 3, 2, |
| 49 | 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5, 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, |
| 50 | 4, 5, 5, 6, 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, 3, 4, 4, |
| 51 | 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7, 1, 2, 2, 3, 2, 3, 3, 4, 2, 3, |
| 52 | 3, 4, 3, 4, 4, 5, 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, 2, |
| 53 | 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, 3, 4, 4, 5, 4, 5, 5, 6, |
| 54 | 4, 5, 5, 6, 5, 6, 6, 7, 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, |
| 55 | 6, 3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7, 3, 4, 4, 5, 4, 5, |
| 56 | 5, 6, 4, 5, 5, 6, 5, 6, 6, 7, 4, 5, 5, 6, 5, 6, 6, 7, 5, 6, 6, 7, 6, |
| 57 | 7, 7, 8 |
| 58 | }; |
| 59 | |
| 60 | |
| 61 | #ifdef REGISTER_USAGE_ANALYZE |
| 62 | |
| 63 | u64 instructions_total = 0; |
| 64 | |
| 65 | u64 arm_reg_freq[16]; |
| 66 | u64 arm_reg_access_total = 0; |
| 67 | u64 arm_instructions_total = 0; |
| 68 | |
| 69 | u64 thumb_reg_freq[16]; |
| 70 | u64 thumb_reg_access_total = 0; |
| 71 | u64 thumb_instructions_total = 0; |
| 72 | |
| 73 | // mla/long mla's addition operand are not counted yet. |
| 74 | |
| 75 | #define using_register(instruction_set, register, type) \ |
| 76 | instruction_set##_reg_freq[register]++; \ |
| 77 | instruction_set##_reg_access_total++ \ |
| 78 | |
| 79 | #define using_register_list(instruction_set, rlist, count) \ |
| 80 | { \ |
| 81 | u32 i; \ |
| 82 | for(i = 0; i < count; i++) \ |
| 83 | { \ |
| 84 | if((reg_list >> i) & 0x01) \ |
| 85 | { \ |
| 86 | using_register(instruction_set, i, memory_target); \ |
| 87 | } \ |
| 88 | } \ |
| 89 | } \ |
| 90 | |
| 91 | #define using_instruction(instruction_set) \ |
| 92 | instruction_set##_instructions_total++; \ |
| 93 | instructions_total++ \ |
| 94 | |
| 95 | int sort_tagged_element(const void *_a, const void *_b) |
| 96 | { |
| 97 | const u64 *a = _a; |
| 98 | const u64 *b = _b; |
| 99 | |
| 100 | return (int)(b[1] - a[1]); |
| 101 | } |
| 102 | |
| 103 | void print_register_usage() |
| 104 | { |
| 105 | u32 i; |
| 106 | u64 arm_reg_freq_tagged[32]; |
| 107 | u64 thumb_reg_freq_tagged[32]; |
| 108 | double percent; |
| 109 | double percent_total = 0.0; |
| 110 | |
| 111 | for(i = 0; i < 16; i++) |
| 112 | { |
| 113 | arm_reg_freq_tagged[i * 2] = i; |
| 114 | arm_reg_freq_tagged[(i * 2) + 1] = arm_reg_freq[i]; |
| 115 | thumb_reg_freq_tagged[i * 2] = i; |
| 116 | thumb_reg_freq_tagged[(i * 2) + 1] = thumb_reg_freq[i]; |
| 117 | } |
| 118 | |
| 119 | qsort(arm_reg_freq_tagged, 16, sizeof(u64) * 2, sort_tagged_element); |
| 120 | qsort(thumb_reg_freq_tagged, 16, sizeof(u64) * 2, sort_tagged_element); |
| 121 | |
| 122 | printf("ARM register usage (%lf%% ARM instructions):\n", |
| 123 | (arm_instructions_total * 100.0) / instructions_total); |
| 124 | for(i = 0; i < 16; i++) |
| 125 | { |
| 126 | percent = (arm_reg_freq_tagged[(i * 2) + 1] * 100.0) / |
| 127 | arm_reg_access_total; |
| 128 | percent_total += percent; |
| 129 | printf("r%02d: %lf%% (-- %lf%%)\n", |
| 130 | (u32)arm_reg_freq_tagged[(i * 2)], percent, percent_total); |
| 131 | } |
| 132 | |
| 133 | percent_total = 0.0; |
| 134 | |
| 135 | printf("\nThumb register usage (%lf%% Thumb instructions):\n", |
| 136 | (thumb_instructions_total * 100.0) / instructions_total); |
| 137 | for(i = 0; i < 16; i++) |
| 138 | { |
| 139 | percent = (thumb_reg_freq_tagged[(i * 2) + 1] * 100.0) / |
| 140 | thumb_reg_access_total; |
| 141 | percent_total += percent; |
| 142 | printf("r%02d: %lf%% (-- %lf%%)\n", |
| 143 | (u32)thumb_reg_freq_tagged[(i * 2)], percent, percent_total); |
| 144 | } |
| 145 | |
| 146 | memset(arm_reg_freq, 0, sizeof(u64) * 16); |
| 147 | memset(thumb_reg_freq, 0, sizeof(u64) * 16); |
| 148 | arm_reg_access_total = 0; |
| 149 | thumb_reg_access_total = 0; |
| 150 | } |
| 151 | |
| 152 | #else |
| 153 | |
| 154 | #define using_register(instruction_set, register, type) \ |
| 155 | |
| 156 | #define using_register_list(instruction_set, rlist, count) \ |
| 157 | |
| 158 | #define using_instruction(instruction_set) \ |
| 159 | |
| 160 | #endif |
| 161 | |
| 162 | |
| 163 | #define arm_decode_data_proc_reg() \ |
| 164 | u32 rn = (opcode >> 16) & 0x0F; \ |
| 165 | u32 rd = (opcode >> 12) & 0x0F; \ |
| 166 | u32 rm = opcode & 0x0F; \ |
| 167 | using_register(arm, rd, op_dest); \ |
| 168 | using_register(arm, rn, op_src); \ |
| 169 | using_register(arm, rm, op_src) \ |
| 170 | |
| 171 | #define arm_decode_data_proc_imm() \ |
| 172 | u32 rn = (opcode >> 16) & 0x0F; \ |
| 173 | u32 rd = (opcode >> 12) & 0x0F; \ |
| 174 | u32 imm; \ |
| 175 | ror(imm, opcode & 0xFF, ((opcode >> 8) & 0x0F) * 2); \ |
| 176 | using_register(arm, rd, op_dest); \ |
| 177 | using_register(arm, rn, op_src) \ |
| 178 | |
| 179 | #define arm_decode_psr_reg() \ |
| 180 | u32 psr_field = (opcode >> 16) & 0x0F; \ |
| 181 | u32 rd = (opcode >> 12) & 0x0F; \ |
| 182 | u32 rm = opcode & 0x0F; \ |
| 183 | using_register(arm, rd, op_dest); \ |
| 184 | using_register(arm, rm, op_src) \ |
| 185 | |
| 186 | #define arm_decode_psr_imm() \ |
| 187 | u32 psr_field = (opcode >> 16) & 0x0F; \ |
| 188 | u32 rd = (opcode >> 12) & 0x0F; \ |
| 189 | u32 imm; \ |
| 190 | ror(imm, opcode & 0xFF, ((opcode >> 8) & 0x0F) * 2); \ |
| 191 | using_register(arm, rd, op_dest) \ |
| 192 | |
| 193 | #define arm_decode_branchx() \ |
| 194 | u32 rn = opcode & 0x0F; \ |
| 195 | using_register(arm, rn, branch_target) \ |
| 196 | |
| 197 | #define arm_decode_multiply() \ |
| 198 | u32 rd = (opcode >> 16) & 0x0F; \ |
| 199 | u32 rn = (opcode >> 12) & 0x0F; \ |
| 200 | u32 rs = (opcode >> 8) & 0x0F; \ |
| 201 | u32 rm = opcode & 0x0F; \ |
| 202 | using_register(arm, rd, op_dest); \ |
| 203 | using_register(arm, rn, op_src); \ |
| 204 | using_register(arm, rm, op_src) \ |
| 205 | |
| 206 | #define arm_decode_multiply_long() \ |
| 207 | u32 rdhi = (opcode >> 16) & 0x0F; \ |
| 208 | u32 rdlo = (opcode >> 12) & 0x0F; \ |
| 209 | u32 rn = (opcode >> 8) & 0x0F; \ |
| 210 | u32 rm = opcode & 0x0F; \ |
| 211 | using_register(arm, rdhi, op_dest); \ |
| 212 | using_register(arm, rdlo, op_dest); \ |
| 213 | using_register(arm, rn, op_src); \ |
| 214 | using_register(arm, rm, op_src) \ |
| 215 | |
| 216 | #define arm_decode_swap() \ |
| 217 | u32 rn = (opcode >> 16) & 0x0F; \ |
| 218 | u32 rd = (opcode >> 12) & 0x0F; \ |
| 219 | u32 rm = opcode & 0x0F; \ |
| 220 | using_register(arm, rd, memory_target); \ |
| 221 | using_register(arm, rn, memory_base); \ |
| 222 | using_register(arm, rm, memory_target) \ |
| 223 | |
| 224 | #define arm_decode_half_trans_r() \ |
| 225 | u32 rn = (opcode >> 16) & 0x0F; \ |
| 226 | u32 rd = (opcode >> 12) & 0x0F; \ |
| 227 | u32 rm = opcode & 0x0F; \ |
| 228 | using_register(arm, rd, memory_target); \ |
| 229 | using_register(arm, rn, memory_base); \ |
| 230 | using_register(arm, rm, memory_offset) \ |
| 231 | |
| 232 | #define arm_decode_half_trans_of() \ |
| 233 | u32 rn = (opcode >> 16) & 0x0F; \ |
| 234 | u32 rd = (opcode >> 12) & 0x0F; \ |
| 235 | u32 offset = ((opcode >> 4) & 0xF0) | (opcode & 0x0F); \ |
| 236 | using_register(arm, rd, memory_target); \ |
| 237 | using_register(arm, rn, memory_base) \ |
| 238 | |
| 239 | #define arm_decode_data_trans_imm() \ |
| 240 | u32 rn = (opcode >> 16) & 0x0F; \ |
| 241 | u32 rd = (opcode >> 12) & 0x0F; \ |
| 242 | u32 offset = opcode & 0x0FFF; \ |
| 243 | using_register(arm, rd, memory_target); \ |
| 244 | using_register(arm, rn, memory_base) \ |
| 245 | |
| 246 | #define arm_decode_data_trans_reg() \ |
| 247 | u32 rn = (opcode >> 16) & 0x0F; \ |
| 248 | u32 rd = (opcode >> 12) & 0x0F; \ |
| 249 | u32 rm = opcode & 0x0F; \ |
| 250 | using_register(arm, rd, memory_target); \ |
| 251 | using_register(arm, rn, memory_base); \ |
| 252 | using_register(arm, rm, memory_offset) \ |
| 253 | |
| 254 | #define arm_decode_block_trans() \ |
| 255 | u32 rn = (opcode >> 16) & 0x0F; \ |
| 256 | u32 reg_list = opcode & 0xFFFF; \ |
| 257 | using_register(arm, rn, memory_base); \ |
| 258 | using_register_list(arm, reg_list, 16) \ |
| 259 | |
| 260 | #define arm_decode_branch() \ |
| 261 | s32 offset = ((s32)(opcode & 0xFFFFFF) << 8) >> 6 \ |
| 262 | |
| 263 | |
| 264 | #define thumb_decode_shift() \ |
| 265 | u32 imm = (opcode >> 6) & 0x1F; \ |
| 266 | u32 rs = (opcode >> 3) & 0x07; \ |
| 267 | u32 rd = opcode & 0x07; \ |
| 268 | using_register(thumb, rd, op_dest); \ |
| 269 | using_register(thumb, rs, op_shift) \ |
| 270 | |
| 271 | #define thumb_decode_add_sub() \ |
| 272 | u32 rn = (opcode >> 6) & 0x07; \ |
| 273 | u32 rs = (opcode >> 3) & 0x07; \ |
| 274 | u32 rd = opcode & 0x07; \ |
| 275 | using_register(thumb, rd, op_dest); \ |
| 276 | using_register(thumb, rn, op_src); \ |
| 277 | using_register(thumb, rn, op_src) \ |
| 278 | |
| 279 | #define thumb_decode_add_sub_imm() \ |
| 280 | u32 imm = (opcode >> 6) & 0x07; \ |
| 281 | u32 rs = (opcode >> 3) & 0x07; \ |
| 282 | u32 rd = opcode & 0x07; \ |
| 283 | using_register(thumb, rd, op_src_dest); \ |
| 284 | using_register(thumb, rs, op_src) \ |
| 285 | |
| 286 | #define thumb_decode_imm() \ |
| 287 | u32 imm = opcode & 0xFF; \ |
| 288 | using_register(thumb, ((opcode >> 8) & 0x07), op_dest) \ |
| 289 | |
| 290 | #define thumb_decode_alu_op() \ |
| 291 | u32 rs = (opcode >> 3) & 0x07; \ |
| 292 | u32 rd = opcode & 0x07; \ |
| 293 | using_register(thumb, rd, op_src_dest); \ |
| 294 | using_register(thumb, rs, op_src) \ |
| 295 | |
| 296 | #define thumb_decode_hireg_op() \ |
| 297 | u32 rs = (opcode >> 3) & 0x0F; \ |
| 298 | u32 rd = ((opcode >> 4) & 0x08) | (opcode & 0x07); \ |
| 299 | using_register(thumb, rd, op_src_dest); \ |
| 300 | using_register(thumb, rs, op_src) \ |
| 301 | |
| 302 | |
| 303 | #define thumb_decode_mem_reg() \ |
| 304 | u32 ro = (opcode >> 6) & 0x07; \ |
| 305 | u32 rb = (opcode >> 3) & 0x07; \ |
| 306 | u32 rd = opcode & 0x07; \ |
| 307 | using_register(thumb, rd, memory_target); \ |
| 308 | using_register(thumb, rb, memory_base); \ |
| 309 | using_register(thumb, ro, memory_offset) \ |
| 310 | |
| 311 | |
| 312 | #define thumb_decode_mem_imm() \ |
| 313 | u32 imm = (opcode >> 6) & 0x1F; \ |
| 314 | u32 rb = (opcode >> 3) & 0x07; \ |
| 315 | u32 rd = opcode & 0x07; \ |
| 316 | using_register(thumb, rd, memory_target); \ |
| 317 | using_register(thumb, rb, memory_base) \ |
| 318 | |
| 319 | |
| 320 | #define thumb_decode_add_sp() \ |
| 321 | u32 imm = opcode & 0x7F; \ |
| 322 | using_register(thumb, REG_SP, op_dest) \ |
| 323 | |
| 324 | #define thumb_decode_rlist() \ |
| 325 | u32 reg_list = opcode & 0xFF; \ |
| 326 | using_register_list(thumb, rlist, 8) \ |
| 327 | |
| 328 | #define thumb_decode_branch_cond() \ |
| 329 | s32 offset = (s8)(opcode & 0xFF) \ |
| 330 | |
| 331 | #define thumb_decode_swi() \ |
| 332 | u32 comment = opcode & 0xFF \ |
| 333 | |
| 334 | #define thumb_decode_branch() \ |
| 335 | u32 offset = opcode & 0x07FF \ |
| 336 | |
| 337 | |
| 338 | #define get_shift_register(dest) \ |
| 339 | u32 shift = reg[(opcode >> 8) & 0x0F]; \ |
| 340 | using_register(arm, ((opcode >> 8) & 0x0F), op_shift); \ |
| 341 | dest = reg[rm]; \ |
| 342 | if(rm == 15) \ |
| 343 | dest += 4 \ |
| 344 | |
| 345 | |
| 346 | #define calculate_z_flag(dest) \ |
| 347 | z_flag = (dest == 0) \ |
| 348 | |
| 349 | #define calculate_n_flag(dest) \ |
| 350 | n_flag = ((signed)dest < 0) \ |
| 351 | |
| 352 | #define calculate_c_flag_sub(dest, src_a, src_b) \ |
| 353 | c_flag = ((unsigned)src_b <= (unsigned)src_a) \ |
| 354 | |
| 355 | #define calculate_v_flag_sub(dest, src_a, src_b) \ |
| 356 | v_flag = ((signed)src_b > (signed)src_a) != ((signed)dest < 0) \ |
| 357 | |
| 358 | #define calculate_c_flag_add(dest, src_a, src_b) \ |
| 359 | c_flag = ((unsigned)dest < (unsigned)src_a) \ |
| 360 | |
| 361 | #define calculate_v_flag_add(dest, src_a, src_b) \ |
| 362 | v_flag = ((signed)dest < (signed)src_a) != ((signed)src_b < 0) \ |
| 363 | |
| 364 | |
| 365 | #define calculate_reg_sh() \ |
| 366 | u32 reg_sh; \ |
| 367 | switch((opcode >> 4) & 0x07) \ |
| 368 | { \ |
| 369 | /* LSL imm */ \ |
| 370 | case 0x0: \ |
| 371 | { \ |
| 372 | reg_sh = reg[rm] << ((opcode >> 7) & 0x1F); \ |
| 373 | break; \ |
| 374 | } \ |
| 375 | \ |
| 376 | /* LSL reg */ \ |
| 377 | case 0x1: \ |
| 378 | { \ |
| 379 | get_shift_register(reg_sh); \ |
| 380 | if(shift <= 31) \ |
| 381 | reg_sh = reg_sh << shift; \ |
| 382 | else \ |
| 383 | reg_sh = 0; \ |
| 384 | break; \ |
| 385 | } \ |
| 386 | \ |
| 387 | /* LSR imm */ \ |
| 388 | case 0x2: \ |
| 389 | { \ |
| 390 | u32 imm = (opcode >> 7) & 0x1F; \ |
| 391 | if(imm == 0) \ |
| 392 | reg_sh = 0; \ |
| 393 | else \ |
| 394 | reg_sh = reg[rm] >> imm; \ |
| 395 | break; \ |
| 396 | } \ |
| 397 | \ |
| 398 | /* LSR reg */ \ |
| 399 | case 0x3: \ |
| 400 | { \ |
| 401 | get_shift_register(reg_sh); \ |
| 402 | if(shift <= 31) \ |
| 403 | reg_sh = reg_sh >> shift; \ |
| 404 | else \ |
| 405 | reg_sh = 0; \ |
| 406 | break; \ |
| 407 | } \ |
| 408 | \ |
| 409 | /* ASR imm */ \ |
| 410 | case 0x4: \ |
| 411 | { \ |
| 412 | u32 imm = (opcode >> 7) & 0x1F; \ |
| 413 | reg_sh = reg[rm]; \ |
| 414 | \ |
| 415 | if(imm == 0) \ |
| 416 | reg_sh = (s32)reg_sh >> 31; \ |
| 417 | else \ |
| 418 | reg_sh = (s32)reg_sh >> imm; \ |
| 419 | break; \ |
| 420 | } \ |
| 421 | \ |
| 422 | /* ASR reg */ \ |
| 423 | case 0x5: \ |
| 424 | { \ |
| 425 | get_shift_register(reg_sh); \ |
| 426 | if(shift <= 31) \ |
| 427 | reg_sh = (s32)reg_sh >> shift; \ |
| 428 | else \ |
| 429 | reg_sh = (s32)reg_sh >> 31; \ |
| 430 | break; \ |
| 431 | } \ |
| 432 | \ |
| 433 | /* ROR imm */ \ |
| 434 | case 0x6: \ |
| 435 | { \ |
| 436 | u32 imm = (opcode >> 7) & 0x1F; \ |
| 437 | \ |
| 438 | if(imm == 0) \ |
| 439 | reg_sh = (reg[rm] >> 1) | (c_flag << 31); \ |
| 440 | else \ |
| 441 | ror(reg_sh, reg[rm], imm); \ |
| 442 | break; \ |
| 443 | } \ |
| 444 | \ |
| 445 | /* ROR reg */ \ |
| 446 | case 0x7: \ |
| 447 | { \ |
| 448 | get_shift_register(reg_sh); \ |
| 449 | ror(reg_sh, reg_sh, shift); \ |
| 450 | break; \ |
| 451 | } \ |
| 452 | } \ |
| 453 | |
| 454 | #define calculate_reg_sh_flags() \ |
| 455 | u32 reg_sh; \ |
| 456 | switch((opcode >> 4) & 0x07) \ |
| 457 | { \ |
| 458 | /* LSL imm */ \ |
| 459 | case 0x0: \ |
| 460 | { \ |
| 461 | u32 imm = (opcode >> 7) & 0x1F; \ |
| 462 | reg_sh = reg[rm]; \ |
| 463 | \ |
| 464 | if(imm != 0) \ |
| 465 | { \ |
| 466 | c_flag = (reg_sh >> (32 - imm)) & 0x01; \ |
| 467 | reg_sh <<= imm; \ |
| 468 | } \ |
| 469 | \ |
| 470 | break; \ |
| 471 | } \ |
| 472 | \ |
| 473 | /* LSL reg */ \ |
| 474 | case 0x1: \ |
| 475 | { \ |
| 476 | get_shift_register(reg_sh); \ |
| 477 | if(shift != 0) \ |
| 478 | { \ |
| 479 | if(shift > 31) \ |
| 480 | { \ |
| 481 | if(shift == 32) \ |
| 482 | c_flag = reg_sh & 0x01; \ |
| 483 | else \ |
| 484 | c_flag = 0; \ |
| 485 | reg_sh = 0; \ |
| 486 | } \ |
| 487 | else \ |
| 488 | { \ |
| 489 | c_flag = (reg_sh >> (32 - shift)) & 0x01; \ |
| 490 | reg_sh <<= shift; \ |
| 491 | } \ |
| 492 | } \ |
| 493 | break; \ |
| 494 | } \ |
| 495 | \ |
| 496 | /* LSR imm */ \ |
| 497 | case 0x2: \ |
| 498 | { \ |
| 499 | u32 imm = (opcode >> 7) & 0x1F; \ |
| 500 | reg_sh = reg[rm]; \ |
| 501 | if(imm == 0) \ |
| 502 | { \ |
| 503 | c_flag = reg_sh >> 31; \ |
| 504 | reg_sh = 0; \ |
| 505 | } \ |
| 506 | else \ |
| 507 | { \ |
| 508 | c_flag = (reg_sh >> (imm - 1)) & 0x01; \ |
| 509 | reg_sh >>= imm; \ |
| 510 | } \ |
| 511 | break; \ |
| 512 | } \ |
| 513 | \ |
| 514 | /* LSR reg */ \ |
| 515 | case 0x3: \ |
| 516 | { \ |
| 517 | get_shift_register(reg_sh); \ |
| 518 | if(shift != 0) \ |
| 519 | { \ |
| 520 | if(shift > 31) \ |
| 521 | { \ |
| 522 | if(shift == 32) \ |
| 523 | c_flag = (reg_sh >> 31) & 0x01; \ |
| 524 | else \ |
| 525 | c_flag = 0; \ |
| 526 | reg_sh = 0; \ |
| 527 | } \ |
| 528 | else \ |
| 529 | { \ |
| 530 | c_flag = (reg_sh >> (shift - 1)) & 0x01; \ |
| 531 | reg_sh >>= shift; \ |
| 532 | } \ |
| 533 | } \ |
| 534 | break; \ |
| 535 | } \ |
| 536 | \ |
| 537 | /* ASR imm */ \ |
| 538 | case 0x4: \ |
| 539 | { \ |
| 540 | u32 imm = (opcode >> 7) & 0x1F; \ |
| 541 | reg_sh = reg[rm]; \ |
| 542 | if(imm == 0) \ |
| 543 | { \ |
| 544 | reg_sh = (s32)reg_sh >> 31; \ |
| 545 | c_flag = reg_sh & 0x01; \ |
| 546 | } \ |
| 547 | else \ |
| 548 | { \ |
| 549 | c_flag = (reg_sh >> (imm - 1)) & 0x01; \ |
| 550 | reg_sh = (s32)reg_sh >> imm; \ |
| 551 | } \ |
| 552 | break; \ |
| 553 | } \ |
| 554 | \ |
| 555 | /* ASR reg */ \ |
| 556 | case 0x5: \ |
| 557 | { \ |
| 558 | get_shift_register(reg_sh); \ |
| 559 | if(shift != 0) \ |
| 560 | { \ |
| 561 | if(shift > 31) \ |
| 562 | { \ |
| 563 | reg_sh = (s32)reg_sh >> 31; \ |
| 564 | c_flag = reg_sh & 0x01; \ |
| 565 | } \ |
| 566 | else \ |
| 567 | { \ |
| 568 | c_flag = (reg_sh >> (shift - 1)) & 0x01; \ |
| 569 | reg_sh = (s32)reg_sh >> shift; \ |
| 570 | } \ |
| 571 | } \ |
| 572 | break; \ |
| 573 | } \ |
| 574 | \ |
| 575 | /* ROR imm */ \ |
| 576 | case 0x6: \ |
| 577 | { \ |
| 578 | u32 imm = (opcode >> 7) & 0x1F; \ |
| 579 | reg_sh = reg[rm]; \ |
| 580 | if(imm == 0) \ |
| 581 | { \ |
| 582 | u32 old_c_flag = c_flag; \ |
| 583 | c_flag = reg_sh & 0x01; \ |
| 584 | reg_sh = (reg_sh >> 1) | (old_c_flag << 31); \ |
| 585 | } \ |
| 586 | else \ |
| 587 | { \ |
| 588 | c_flag = (reg_sh >> (imm - 1)) & 0x01; \ |
| 589 | ror(reg_sh, reg_sh, imm); \ |
| 590 | } \ |
| 591 | break; \ |
| 592 | } \ |
| 593 | \ |
| 594 | /* ROR reg */ \ |
| 595 | case 0x7: \ |
| 596 | { \ |
| 597 | get_shift_register(reg_sh); \ |
| 598 | if(shift != 0) \ |
| 599 | { \ |
| 600 | c_flag = (reg_sh >> (shift - 1)) & 0x01; \ |
| 601 | ror(reg_sh, reg_sh, shift); \ |
| 602 | } \ |
| 603 | break; \ |
| 604 | } \ |
| 605 | } \ |
| 606 | |
| 607 | #define calculate_reg_offset() \ |
| 608 | u32 reg_offset; \ |
| 609 | switch((opcode >> 5) & 0x03) \ |
| 610 | { \ |
| 611 | /* LSL imm */ \ |
| 612 | case 0x0: \ |
| 613 | { \ |
| 614 | reg_offset = reg[rm] << ((opcode >> 7) & 0x1F); \ |
| 615 | break; \ |
| 616 | } \ |
| 617 | \ |
| 618 | /* LSR imm */ \ |
| 619 | case 0x1: \ |
| 620 | { \ |
| 621 | u32 imm = (opcode >> 7) & 0x1F; \ |
| 622 | if(imm == 0) \ |
| 623 | reg_offset = 0; \ |
| 624 | else \ |
| 625 | reg_offset = reg[rm] >> imm; \ |
| 626 | break; \ |
| 627 | } \ |
| 628 | \ |
| 629 | /* ASR imm */ \ |
| 630 | case 0x2: \ |
| 631 | { \ |
| 632 | u32 imm = (opcode >> 7) & 0x1F; \ |
| 633 | if(imm == 0) \ |
| 634 | reg_offset = (s32)reg[rm] >> 31; \ |
| 635 | else \ |
| 636 | reg_offset = (s32)reg[rm] >> imm; \ |
| 637 | break; \ |
| 638 | } \ |
| 639 | \ |
| 640 | /* ROR imm */ \ |
| 641 | case 0x3: \ |
| 642 | { \ |
| 643 | u32 imm = (opcode >> 7) & 0x1F; \ |
| 644 | if(imm == 0) \ |
| 645 | reg_offset = (reg[rm] >> 1) | (c_flag << 31); \ |
| 646 | else \ |
| 647 | ror(reg_offset, reg[rm], imm); \ |
| 648 | break; \ |
| 649 | } \ |
| 650 | } \ |
| 651 | |
| 652 | #define calculate_flags_add(dest, src_a, src_b) \ |
| 653 | calculate_z_flag(dest); \ |
| 654 | calculate_n_flag(dest); \ |
| 655 | calculate_c_flag_add(dest, src_a, src_b); \ |
| 656 | calculate_v_flag_add(dest, src_a, src_b) \ |
| 657 | |
| 658 | #define calculate_flags_sub(dest, src_a, src_b) \ |
| 659 | calculate_z_flag(dest); \ |
| 660 | calculate_n_flag(dest); \ |
| 661 | calculate_c_flag_sub(dest, src_a, src_b); \ |
| 662 | calculate_v_flag_sub(dest, src_a, src_b) \ |
| 663 | |
| 664 | #define calculate_flags_logic(dest) \ |
| 665 | calculate_z_flag(dest); \ |
| 666 | calculate_n_flag(dest) \ |
| 667 | |
| 668 | #define extract_flags() \ |
| 669 | n_flag = reg[REG_CPSR] >> 31; \ |
| 670 | z_flag = (reg[REG_CPSR] >> 30) & 0x01; \ |
| 671 | c_flag = (reg[REG_CPSR] >> 29) & 0x01; \ |
| 672 | v_flag = (reg[REG_CPSR] >> 28) & 0x01; \ |
| 673 | |
| 674 | #define collapse_flags() \ |
| 675 | reg[REG_CPSR] = (n_flag << 31) | (z_flag << 30) | (c_flag << 29) | \ |
| 676 | (v_flag << 28) | (reg[REG_CPSR] & 0xFF) \ |
| 677 | |
| 678 | #define memory_region(r_dest, l_dest, address) \ |
| 679 | r_dest = memory_regions[address >> 24]; \ |
| 680 | l_dest = memory_limits[address >> 24] \ |
| 681 | |
| 682 | |
| 683 | #define pc_region() \ |
| 684 | memory_region(pc_region, pc_limit, pc) \ |
| 685 | |
| 686 | #define check_pc_region() \ |
| 687 | new_pc_region = (pc >> 15); \ |
| 688 | if(new_pc_region != pc_region) \ |
| 689 | { \ |
| 690 | pc_region = new_pc_region; \ |
| 691 | pc_address_block = memory_map_read[new_pc_region]; \ |
| 692 | \ |
| 693 | if(pc_address_block == NULL) \ |
| 694 | pc_address_block = load_gamepak_page(pc_region & 0x3FF); \ |
| 695 | } \ |
| 696 | |
| 697 | u32 branch_targets = 0; |
| 698 | u32 high_frequency_branch_targets = 0; |
| 699 | |
| 700 | #define BRANCH_ACTIVITY_THRESHOLD 50 |
| 701 | |
| 702 | #define arm_update_pc() \ |
| 703 | pc = reg[REG_PC] \ |
| 704 | |
| 705 | #define arm_pc_offset(val) \ |
| 706 | pc += val; \ |
| 707 | reg[REG_PC] = pc \ |
| 708 | |
| 709 | #define arm_pc_offset_update(val) \ |
| 710 | pc += val; \ |
| 711 | reg[REG_PC] = pc \ |
| 712 | |
| 713 | #define arm_pc_offset_update_direct(val) \ |
| 714 | pc = val; \ |
| 715 | reg[REG_PC] = pc \ |
| 716 | |
| 717 | |
| 718 | // It should be okay to still generate result flags, spsr will overwrite them. |
| 719 | // This is pretty infrequent (returning from interrupt handlers, et al) so |
| 720 | // probably not worth optimizing for. |
| 721 | |
| 722 | #define check_for_interrupts() \ |
| 723 | if((io_registers[REG_IE] & io_registers[REG_IF]) && \ |
| 724 | io_registers[REG_IME] && ((reg[REG_CPSR] & 0x80) == 0)) \ |
| 725 | { \ |
| 726 | reg_mode[MODE_IRQ][6] = reg[REG_PC] + 4; \ |
| 727 | spsr[MODE_IRQ] = reg[REG_CPSR]; \ |
| 728 | reg[REG_CPSR] = 0xD2; \ |
| 729 | reg[REG_PC] = 0x00000018; \ |
| 730 | arm_update_pc(); \ |
| 731 | set_cpu_mode(MODE_IRQ); \ |
| 732 | goto arm_loop; \ |
| 733 | } \ |
| 734 | |
| 735 | #define arm_spsr_restore() \ |
| 736 | if(rd == 15) \ |
| 737 | { \ |
| 738 | if(reg[CPU_MODE] != MODE_USER) \ |
| 739 | { \ |
| 740 | reg[REG_CPSR] = spsr[reg[CPU_MODE]]; \ |
| 741 | extract_flags(); \ |
| 742 | set_cpu_mode(cpu_modes[reg[REG_CPSR] & 0x1F]); \ |
| 743 | check_for_interrupts(); \ |
| 744 | } \ |
| 745 | arm_update_pc(); \ |
| 746 | \ |
| 747 | if(reg[REG_CPSR] & 0x20) \ |
| 748 | goto thumb_loop; \ |
| 749 | } \ |
| 750 | |
| 751 | #define arm_data_proc_flags_reg() \ |
| 752 | arm_decode_data_proc_reg(); \ |
| 753 | calculate_reg_sh_flags() \ |
| 754 | |
| 755 | #define arm_data_proc_reg() \ |
| 756 | arm_decode_data_proc_reg(); \ |
| 757 | calculate_reg_sh() \ |
| 758 | |
| 759 | #define arm_data_proc_flags_imm() \ |
| 760 | arm_decode_data_proc_imm() \ |
| 761 | |
| 762 | #define arm_data_proc_imm() \ |
| 763 | arm_decode_data_proc_imm() \ |
| 764 | |
| 765 | #define arm_data_proc(expr, type) \ |
| 766 | { \ |
| 767 | u32 dest; \ |
| 768 | arm_pc_offset(8); \ |
| 769 | arm_data_proc_##type(); \ |
| 770 | dest = expr; \ |
| 771 | arm_pc_offset(-4); \ |
| 772 | reg[rd] = dest; \ |
| 773 | \ |
| 774 | if(rd == 15) \ |
| 775 | { \ |
| 776 | arm_update_pc(); \ |
| 777 | } \ |
| 778 | } \ |
| 779 | |
| 780 | #define flags_vars(src_a, src_b) \ |
| 781 | u32 dest; \ |
| 782 | const u32 _sa = src_a; \ |
| 783 | const u32 _sb = src_b \ |
| 784 | |
| 785 | #define arm_data_proc_logic_flags(expr, type) \ |
| 786 | { \ |
| 787 | arm_pc_offset(8); \ |
| 788 | arm_data_proc_flags_##type(); \ |
| 789 | u32 dest = expr; \ |
| 790 | calculate_flags_logic(dest); \ |
| 791 | arm_pc_offset(-4); \ |
| 792 | reg[rd] = dest; \ |
| 793 | arm_spsr_restore(); \ |
| 794 | } \ |
| 795 | |
| 796 | #define arm_data_proc_add_flags(src_a, src_b, type) \ |
| 797 | { \ |
| 798 | arm_pc_offset(8); \ |
| 799 | arm_data_proc_##type(); \ |
| 800 | flags_vars(src_a, src_b); \ |
| 801 | dest = _sa + _sb; \ |
| 802 | calculate_flags_add(dest, _sa, _sb); \ |
| 803 | arm_pc_offset(-4); \ |
| 804 | reg[rd] = dest; \ |
| 805 | arm_spsr_restore(); \ |
| 806 | } |
| 807 | |
| 808 | #define arm_data_proc_sub_flags(src_a, src_b, type) \ |
| 809 | { \ |
| 810 | arm_pc_offset(8); \ |
| 811 | arm_data_proc_##type(); \ |
| 812 | flags_vars(src_a, src_b); \ |
| 813 | dest = _sa - _sb; \ |
| 814 | calculate_flags_sub(dest, _sa, _sb); \ |
| 815 | arm_pc_offset(-4); \ |
| 816 | reg[rd] = dest; \ |
| 817 | arm_spsr_restore(); \ |
| 818 | } \ |
| 819 | |
| 820 | #define arm_data_proc_test_logic(expr, type) \ |
| 821 | { \ |
| 822 | arm_pc_offset(8); \ |
| 823 | arm_data_proc_flags_##type(); \ |
| 824 | u32 dest = expr; \ |
| 825 | calculate_flags_logic(dest); \ |
| 826 | arm_pc_offset(-4); \ |
| 827 | } \ |
| 828 | |
| 829 | #define arm_data_proc_test_add(src_a, src_b, type) \ |
| 830 | { \ |
| 831 | arm_pc_offset(8); \ |
| 832 | arm_data_proc_##type(); \ |
| 833 | flags_vars(src_a, src_b); \ |
| 834 | dest = _sa + _sb; \ |
| 835 | calculate_flags_add(dest, _sa, _sb); \ |
| 836 | arm_pc_offset(-4); \ |
| 837 | } \ |
| 838 | |
| 839 | #define arm_data_proc_test_sub(src_a, src_b, type) \ |
| 840 | { \ |
| 841 | arm_pc_offset(8); \ |
| 842 | arm_data_proc_##type(); \ |
| 843 | flags_vars(src_a, src_b); \ |
| 844 | dest = _sa - _sb; \ |
| 845 | calculate_flags_sub(dest, _sa, _sb); \ |
| 846 | arm_pc_offset(-4); \ |
| 847 | } \ |
| 848 | |
| 849 | #define arm_multiply_flags_yes(_dest) \ |
| 850 | calculate_z_flag(_dest); \ |
| 851 | calculate_n_flag(_dest); \ |
| 852 | |
| 853 | #define arm_multiply_flags_no(_dest) \ |
| 854 | |
| 855 | #define arm_multiply_long_flags_yes(_dest_lo, _dest_hi) \ |
| 856 | z_flag = (_dest_lo == 0) & (_dest_hi == 0); \ |
| 857 | calculate_n_flag(_dest_hi) \ |
| 858 | |
| 859 | #define arm_multiply_long_flags_no(_dest_lo, _dest_hi) \ |
| 860 | |
| 861 | #define arm_multiply(add_op, flags) \ |
| 862 | { \ |
| 863 | u32 dest; \ |
| 864 | arm_decode_multiply(); \ |
| 865 | dest = (reg[rm] * reg[rs]) add_op; \ |
| 866 | arm_multiply_flags_##flags(dest); \ |
| 867 | reg[rd] = dest; \ |
| 868 | arm_pc_offset(4); \ |
| 869 | } \ |
| 870 | |
| 871 | #define arm_multiply_long_addop(type) \ |
| 872 | + ((type##64)((((type##64)reg[rdhi]) << 32) | reg[rdlo])); \ |
| 873 | |
| 874 | #define arm_multiply_long(add_op, flags, type) \ |
| 875 | { \ |
| 876 | type##64 dest; \ |
| 877 | u32 dest_lo; \ |
| 878 | u32 dest_hi; \ |
| 879 | arm_decode_multiply_long(); \ |
| 880 | dest = ((type##64)((type##32)reg[rm]) * \ |
| 881 | (type##64)((type##32)reg[rn])) add_op; \ |
| 882 | dest_lo = (u32)dest; \ |
| 883 | dest_hi = (u32)(dest >> 32); \ |
| 884 | arm_multiply_long_flags_##flags(dest_lo, dest_hi); \ |
| 885 | reg[rdlo] = dest_lo; \ |
| 886 | reg[rdhi] = dest_hi; \ |
| 887 | arm_pc_offset(4); \ |
| 888 | } \ |
| 889 | |
| 890 | const u32 psr_masks[16] = |
| 891 | { |
| 892 | 0x00000000, 0x000000FF, 0x0000FF00, 0x0000FFFF, 0x00FF0000, |
| 893 | 0x00FF00FF, 0x00FFFF00, 0x00FFFFFF, 0xFF000000, 0xFF0000FF, |
| 894 | 0xFF00FF00, 0xFF00FFFF, 0xFFFF0000, 0xFFFF00FF, 0xFFFFFF00, |
| 895 | 0xFFFFFFFF |
| 896 | }; |
| 897 | |
| 898 | #define arm_psr_read(dummy, psr_reg) \ |
| 899 | collapse_flags(); \ |
| 900 | reg[rd] = psr_reg \ |
| 901 | |
| 902 | #define arm_psr_store_cpsr(source) \ |
| 903 | reg[REG_CPSR] = (source & store_mask) | (reg[REG_CPSR] & (~store_mask)); \ |
| 904 | extract_flags(); \ |
| 905 | if(store_mask & 0xFF) \ |
| 906 | { \ |
| 907 | set_cpu_mode(cpu_modes[reg[REG_CPSR] & 0x1F]); \ |
| 908 | check_for_interrupts(); \ |
| 909 | } \ |
| 910 | |
| 911 | #define arm_psr_store_spsr(source) \ |
| 912 | u32 _psr = spsr[reg[CPU_MODE]]; \ |
| 913 | spsr[reg[CPU_MODE]] = (source & store_mask) | (_psr & (~store_mask)) \ |
| 914 | |
| 915 | #define arm_psr_store(source, psr_reg) \ |
| 916 | const u32 store_mask = psr_masks[psr_field]; \ |
| 917 | arm_psr_store_##psr_reg(source) \ |
| 918 | |
| 919 | #define arm_psr_src_reg reg[rm] |
| 920 | |
| 921 | #define arm_psr_src_imm imm |
| 922 | |
| 923 | #define arm_psr(op_type, transfer_type, psr_reg) \ |
| 924 | { \ |
| 925 | arm_decode_psr_##op_type(); \ |
| 926 | arm_pc_offset(4); \ |
| 927 | arm_psr_##transfer_type(arm_psr_src_##op_type, psr_reg); \ |
| 928 | } \ |
| 929 | |
| 930 | #define arm_data_trans_reg() \ |
| 931 | arm_decode_data_trans_reg(); \ |
| 932 | calculate_reg_offset() \ |
| 933 | |
| 934 | #define arm_data_trans_imm() \ |
| 935 | arm_decode_data_trans_imm() \ |
| 936 | |
| 937 | #define arm_data_trans_half_reg() \ |
| 938 | arm_decode_half_trans_r() \ |
| 939 | |
| 940 | #define arm_data_trans_half_imm() \ |
| 941 | arm_decode_half_trans_of() \ |
| 942 | |
| 943 | #define aligned_address_mask8 0xF0000000 |
| 944 | #define aligned_address_mask16 0xF0000001 |
| 945 | #define aligned_address_mask32 0xF0000003 |
| 946 | |
| 947 | #define fast_read_memory(size, type, address, dest) \ |
| 948 | { \ |
| 949 | u8 *map; \ |
| 950 | u32 _address = address; \ |
| 951 | \ |
| 952 | if(_address < 0x10000000) \ |
| 953 | { \ |
| 954 | memory_region_access_read_##type[_address >> 24]++; \ |
| 955 | memory_reads_##type++; \ |
| 956 | } \ |
| 957 | if(((_address >> 24) == 0) && (pc >= 0x4000)) \ |
| 958 | { \ |
| 959 | dest = *((type *)((u8 *)&bios_read_protect + (_address & 0x03))); \ |
| 960 | } \ |
| 961 | else \ |
| 962 | \ |
| 963 | if(((_address & aligned_address_mask##size) == 0) && \ |
| 964 | (map = memory_map_read[address >> 15])) \ |
| 965 | { \ |
| 966 | dest = *((type *)((u8 *)map + (_address & 0x7FFF))); \ |
| 967 | } \ |
| 968 | else \ |
| 969 | { \ |
| 970 | dest = (type)read_memory##size(_address); \ |
| 971 | } \ |
| 972 | } \ |
| 973 | |
| 974 | #define fast_read_memory_s16(address, dest) \ |
| 975 | { \ |
| 976 | u8 *map; \ |
| 977 | u32 _address = address; \ |
| 978 | if(_address < 0x10000000) \ |
| 979 | { \ |
| 980 | memory_region_access_read_s16[_address >> 24]++; \ |
| 981 | memory_reads_s16++; \ |
| 982 | } \ |
| 983 | if(((_address & aligned_address_mask16) == 0) && \ |
| 984 | (map = memory_map_read[_address >> 15])) \ |
| 985 | { \ |
| 986 | dest = *((s16 *)((u8 *)map + (_address & 0x7FFF))); \ |
| 987 | } \ |
| 988 | else \ |
| 989 | { \ |
| 990 | dest = (s16)read_memory16_signed(_address); \ |
| 991 | } \ |
| 992 | } \ |
| 993 | |
| 994 | |
| 995 | #define fast_write_memory(size, type, address, value) \ |
| 996 | { \ |
| 997 | u8 *map; \ |
| 998 | u32 _address = (address) & ~(aligned_address_mask##size & 0x03); \ |
| 999 | if(_address < 0x10000000) \ |
| 1000 | { \ |
| 1001 | memory_region_access_write_##type[_address >> 24]++; \ |
| 1002 | memory_writes_##type++; \ |
| 1003 | } \ |
| 1004 | \ |
| 1005 | if(((_address & aligned_address_mask##size) == 0) && \ |
| 1006 | (map = memory_map_write[_address >> 15])) \ |
| 1007 | { \ |
| 1008 | *((type *)((u8 *)map + (_address & 0x7FFF))) = value; \ |
| 1009 | } \ |
| 1010 | else \ |
| 1011 | { \ |
| 1012 | cpu_alert = write_memory##size(_address, value); \ |
| 1013 | if(cpu_alert) \ |
| 1014 | goto alert; \ |
| 1015 | } \ |
| 1016 | } \ |
| 1017 | |
| 1018 | #define load_aligned32(address, dest) \ |
| 1019 | { \ |
| 1020 | u8 *map = memory_map_read[address >> 15]; \ |
| 1021 | if(address < 0x10000000) \ |
| 1022 | { \ |
| 1023 | memory_region_access_read_u32[address >> 24]++; \ |
| 1024 | memory_reads_u32++; \ |
| 1025 | } \ |
| 1026 | if(map) \ |
| 1027 | { \ |
| 1028 | dest = address32(map, address & 0x7FFF); \ |
| 1029 | } \ |
| 1030 | else \ |
| 1031 | { \ |
| 1032 | dest = read_memory32(address); \ |
| 1033 | } \ |
| 1034 | } \ |
| 1035 | |
| 1036 | #define store_aligned32(address, value) \ |
| 1037 | { \ |
| 1038 | u8 *map = memory_map_write[address >> 15]; \ |
| 1039 | if(address < 0x10000000) \ |
| 1040 | { \ |
| 1041 | memory_region_access_write_u32[address >> 24]++; \ |
| 1042 | memory_writes_u32++; \ |
| 1043 | } \ |
| 1044 | if(map) \ |
| 1045 | { \ |
| 1046 | address32(map, address & 0x7FFF) = value; \ |
| 1047 | } \ |
| 1048 | else \ |
| 1049 | { \ |
| 1050 | cpu_alert = write_memory32(address, value); \ |
| 1051 | if(cpu_alert) \ |
| 1052 | goto alert; \ |
| 1053 | } \ |
| 1054 | } \ |
| 1055 | |
| 1056 | #define load_memory_u8(address, dest) \ |
| 1057 | fast_read_memory(8, u8, address, dest) \ |
| 1058 | |
| 1059 | #define load_memory_u16(address, dest) \ |
| 1060 | fast_read_memory(16, u16, address, dest) \ |
| 1061 | |
| 1062 | #define load_memory_u32(address, dest) \ |
| 1063 | fast_read_memory(32, u32, address, dest) \ |
| 1064 | |
| 1065 | #define load_memory_s8(address, dest) \ |
| 1066 | fast_read_memory(8, s8, address, dest) \ |
| 1067 | |
| 1068 | #define load_memory_s16(address, dest) \ |
| 1069 | fast_read_memory_s16(address, dest) \ |
| 1070 | |
| 1071 | #define store_memory_u8(address, value) \ |
| 1072 | fast_write_memory(8, u8, address, value) \ |
| 1073 | |
| 1074 | #define store_memory_u16(address, value) \ |
| 1075 | fast_write_memory(16, u16, address, value) \ |
| 1076 | |
| 1077 | #define store_memory_u32(address, value) \ |
| 1078 | fast_write_memory(32, u32, address, value) \ |
| 1079 | |
| 1080 | #define no_op \ |
| 1081 | |
| 1082 | #define arm_access_memory_writeback_yes(off_op) \ |
| 1083 | reg[rn] = address off_op \ |
| 1084 | |
| 1085 | #define arm_access_memory_writeback_no(off_op) \ |
| 1086 | |
| 1087 | #define arm_access_memory_pc_preadjust_load() \ |
| 1088 | |
| 1089 | #define arm_access_memory_pc_preadjust_store() \ |
| 1090 | u32 reg_op = reg[rd]; \ |
| 1091 | if(rd == 15) \ |
| 1092 | reg_op += 4 \ |
| 1093 | |
| 1094 | #define arm_access_memory_pc_postadjust_load() \ |
| 1095 | arm_update_pc() \ |
| 1096 | |
| 1097 | #define arm_access_memory_pc_postadjust_store() \ |
| 1098 | |
| 1099 | #define load_reg_op reg[rd] \ |
| 1100 | |
| 1101 | #define store_reg_op reg_op \ |
| 1102 | |
| 1103 | #define arm_access_memory(access_type, off_op, off_type, mem_type, \ |
| 1104 | wb, wb_off_op) \ |
| 1105 | { \ |
| 1106 | arm_pc_offset(8); \ |
| 1107 | arm_data_trans_##off_type(); \ |
| 1108 | u32 address = reg[rn] off_op; \ |
| 1109 | arm_access_memory_pc_preadjust_##access_type(); \ |
| 1110 | \ |
| 1111 | arm_pc_offset(-4); \ |
| 1112 | arm_access_memory_writeback_##wb(wb_off_op); \ |
| 1113 | access_type##_memory_##mem_type(address, access_type##_reg_op); \ |
| 1114 | arm_access_memory_pc_postadjust_##access_type(); \ |
| 1115 | } \ |
| 1116 | |
| 1117 | #define word_bit_count(word) \ |
| 1118 | (bit_count[word >> 8] + bit_count[word & 0xFF]) \ |
| 1119 | |
| 1120 | #define sprint_no(access_type, offset_type, writeback_type) \ |
| 1121 | |
| 1122 | #define sprint_yes(access_type, offset_type, writeback_type) \ |
| 1123 | printf("sbit on %s %s %s\n", #access_type, #offset_type, #writeback_type) \ |
| 1124 | |
| 1125 | #define arm_block_writeback_load() \ |
| 1126 | if(!((reg_list >> rn) & 0x01)) \ |
| 1127 | { \ |
| 1128 | reg[rn] = address; \ |
| 1129 | } \ |
| 1130 | |
| 1131 | #define arm_block_writeback_store() \ |
| 1132 | reg[rn] = address \ |
| 1133 | |
| 1134 | #define arm_block_writeback_yes(access_type) \ |
| 1135 | arm_block_writeback_##access_type() \ |
| 1136 | |
| 1137 | #define arm_block_writeback_no(access_type) \ |
| 1138 | |
| 1139 | #define load_block_memory(address, dest) \ |
| 1140 | dest = address32(address_region, (address + offset) & 0x7FFF) \ |
| 1141 | |
| 1142 | #define store_block_memory(address, dest) \ |
| 1143 | address32(address_region, (address + offset) & 0x7FFF) = dest \ |
| 1144 | |
| 1145 | #define arm_block_memory_offset_down_a() \ |
| 1146 | (base - (word_bit_count(reg_list) * 4) + 4) \ |
| 1147 | |
| 1148 | #define arm_block_memory_offset_down_b() \ |
| 1149 | (base - (word_bit_count(reg_list) * 4)) \ |
| 1150 | |
| 1151 | #define arm_block_memory_offset_no() \ |
| 1152 | (base) \ |
| 1153 | |
| 1154 | #define arm_block_memory_offset_up() \ |
| 1155 | (base + 4) \ |
| 1156 | |
| 1157 | #define arm_block_memory_writeback_down() \ |
| 1158 | reg[rn] = base - (word_bit_count(reg_list) * 4) \ |
| 1159 | |
| 1160 | #define arm_block_memory_writeback_up() \ |
| 1161 | reg[rn] = base + (word_bit_count(reg_list) * 4) \ |
| 1162 | |
| 1163 | #define arm_block_memory_writeback_no() \ |
| 1164 | |
| 1165 | #define arm_block_memory_load_pc() \ |
| 1166 | load_aligned32(address, pc); \ |
| 1167 | reg[REG_PC] = pc \ |
| 1168 | |
| 1169 | #define arm_block_memory_store_pc() \ |
| 1170 | store_aligned32(address, pc + 4) \ |
| 1171 | |
| 1172 | #define arm_block_memory(access_type, offset_type, writeback_type, s_bit) \ |
| 1173 | { \ |
| 1174 | arm_decode_block_trans(); \ |
| 1175 | u32 base = reg[rn]; \ |
| 1176 | u32 address = arm_block_memory_offset_##offset_type() & 0xFFFFFFFC; \ |
| 1177 | u32 i; \ |
| 1178 | \ |
| 1179 | arm_block_memory_writeback_##writeback_type(); \ |
| 1180 | \ |
| 1181 | for(i = 0; i < 15; i++) \ |
| 1182 | { \ |
| 1183 | if((reg_list >> i) & 0x01) \ |
| 1184 | { \ |
| 1185 | access_type##_aligned32(address, reg[i]); \ |
| 1186 | address += 4; \ |
| 1187 | } \ |
| 1188 | } \ |
| 1189 | \ |
| 1190 | arm_pc_offset(4); \ |
| 1191 | if(reg_list & 0x8000) \ |
| 1192 | { \ |
| 1193 | arm_block_memory_##access_type##_pc(); \ |
| 1194 | } \ |
| 1195 | } \ |
| 1196 | |
| 1197 | #define arm_swap(type) \ |
| 1198 | { \ |
| 1199 | arm_decode_swap(); \ |
| 1200 | u32 temp; \ |
| 1201 | load_memory_##type(reg[rn], temp); \ |
| 1202 | store_memory_##type(reg[rn], reg[rm]); \ |
| 1203 | reg[rd] = temp; \ |
| 1204 | arm_pc_offset(4); \ |
| 1205 | } \ |
| 1206 | |
| 1207 | #define arm_next_instruction() \ |
| 1208 | { \ |
| 1209 | arm_pc_offset(4); \ |
| 1210 | goto skip_instruction; \ |
| 1211 | } \ |
| 1212 | |
| 1213 | #define thumb_update_pc() \ |
| 1214 | pc = reg[REG_PC] \ |
| 1215 | |
| 1216 | #define thumb_pc_offset(val) \ |
| 1217 | pc += val; \ |
| 1218 | reg[REG_PC] = pc \ |
| 1219 | |
| 1220 | #define thumb_pc_offset_update(val) \ |
| 1221 | pc += val; \ |
| 1222 | reg[REG_PC] = pc \ |
| 1223 | |
| 1224 | #define thumb_pc_offset_update_direct(val) \ |
| 1225 | pc = val; \ |
| 1226 | reg[REG_PC] = pc \ |
| 1227 | |
| 1228 | // Types: add_sub, add_sub_imm, alu_op, imm |
| 1229 | // Affects N/Z/C/V flags |
| 1230 | |
| 1231 | #define thumb_add(type, dest_reg, src_a, src_b) \ |
| 1232 | { \ |
| 1233 | thumb_decode_##type(); \ |
| 1234 | const u32 _sa = src_a; \ |
| 1235 | const u32 _sb = src_b; \ |
| 1236 | u32 dest = _sa + _sb; \ |
| 1237 | calculate_flags_add(dest, src_a, src_b); \ |
| 1238 | reg[dest_reg] = dest; \ |
| 1239 | thumb_pc_offset(2); \ |
| 1240 | } \ |
| 1241 | |
| 1242 | #define thumb_add_noflags(type, dest_reg, src_a, src_b) \ |
| 1243 | { \ |
| 1244 | thumb_decode_##type(); \ |
| 1245 | u32 dest = src_a + src_b; \ |
| 1246 | reg[dest_reg] = dest; \ |
| 1247 | thumb_pc_offset(2); \ |
| 1248 | } \ |
| 1249 | |
| 1250 | #define thumb_sub(type, dest_reg, src_a, src_b) \ |
| 1251 | { \ |
| 1252 | thumb_decode_##type(); \ |
| 1253 | const u32 _sa = src_a; \ |
| 1254 | const u32 _sb = src_b; \ |
| 1255 | u32 dest = _sa - _sb; \ |
| 1256 | calculate_flags_sub(dest, src_a, src_b); \ |
| 1257 | reg[dest_reg] = dest; \ |
| 1258 | thumb_pc_offset(2); \ |
| 1259 | } \ |
| 1260 | |
| 1261 | // Affects N/Z flags |
| 1262 | |
| 1263 | #define thumb_logic(type, dest_reg, expr) \ |
| 1264 | { \ |
| 1265 | thumb_decode_##type(); \ |
| 1266 | u32 dest = expr; \ |
| 1267 | calculate_flags_logic(dest); \ |
| 1268 | reg[dest_reg] = dest; \ |
| 1269 | thumb_pc_offset(2); \ |
| 1270 | } \ |
| 1271 | |
| 1272 | // Decode types: shift, alu_op |
| 1273 | // Operation types: lsl, lsr, asr, ror |
| 1274 | // Affects N/Z/C flags |
| 1275 | |
| 1276 | #define thumb_shift_lsl_reg() \ |
| 1277 | u32 shift = reg[rs]; \ |
| 1278 | u32 dest = reg[rd]; \ |
| 1279 | if(shift != 0) \ |
| 1280 | { \ |
| 1281 | if(shift > 31) \ |
| 1282 | { \ |
| 1283 | if(shift == 32) \ |
| 1284 | c_flag = dest & 0x01; \ |
| 1285 | else \ |
| 1286 | c_flag = 0; \ |
| 1287 | dest = 0; \ |
| 1288 | } \ |
| 1289 | else \ |
| 1290 | { \ |
| 1291 | c_flag = (dest >> (32 - shift)) & 0x01; \ |
| 1292 | dest <<= shift; \ |
| 1293 | } \ |
| 1294 | } \ |
| 1295 | |
| 1296 | #define thumb_shift_lsr_reg() \ |
| 1297 | u32 shift = reg[rs]; \ |
| 1298 | u32 dest = reg[rd]; \ |
| 1299 | if(shift != 0) \ |
| 1300 | { \ |
| 1301 | if(shift > 31) \ |
| 1302 | { \ |
| 1303 | if(shift == 32) \ |
| 1304 | c_flag = dest >> 31; \ |
| 1305 | else \ |
| 1306 | c_flag = 0; \ |
| 1307 | dest = 0; \ |
| 1308 | } \ |
| 1309 | else \ |
| 1310 | { \ |
| 1311 | c_flag = (dest >> (shift - 1)) & 0x01; \ |
| 1312 | dest >>= shift; \ |
| 1313 | } \ |
| 1314 | } \ |
| 1315 | |
| 1316 | #define thumb_shift_asr_reg() \ |
| 1317 | u32 shift = reg[rs]; \ |
| 1318 | u32 dest = reg[rd]; \ |
| 1319 | if(shift != 0) \ |
| 1320 | { \ |
| 1321 | if(shift > 31) \ |
| 1322 | { \ |
| 1323 | dest = (s32)dest >> 31; \ |
| 1324 | c_flag = dest & 0x01; \ |
| 1325 | } \ |
| 1326 | else \ |
| 1327 | { \ |
| 1328 | c_flag = (dest >> (shift - 1)) & 0x01; \ |
| 1329 | dest = (s32)dest >> shift; \ |
| 1330 | } \ |
| 1331 | } \ |
| 1332 | |
| 1333 | #define thumb_shift_ror_reg() \ |
| 1334 | u32 shift = reg[rs]; \ |
| 1335 | u32 dest = reg[rd]; \ |
| 1336 | if(shift != 0) \ |
| 1337 | { \ |
| 1338 | c_flag = (dest >> (shift - 1)) & 0x01; \ |
| 1339 | ror(dest, dest, shift); \ |
| 1340 | } \ |
| 1341 | |
| 1342 | #define thumb_shift_lsl_imm() \ |
| 1343 | u32 dest = reg[rs]; \ |
| 1344 | if(imm != 0) \ |
| 1345 | { \ |
| 1346 | c_flag = (dest >> (32 - imm)) & 0x01; \ |
| 1347 | dest <<= imm; \ |
| 1348 | } \ |
| 1349 | |
| 1350 | #define thumb_shift_lsr_imm() \ |
| 1351 | u32 dest; \ |
| 1352 | if(imm == 0) \ |
| 1353 | { \ |
| 1354 | dest = 0; \ |
| 1355 | c_flag = reg[rs] >> 31; \ |
| 1356 | } \ |
| 1357 | else \ |
| 1358 | { \ |
| 1359 | dest = reg[rs]; \ |
| 1360 | c_flag = (dest >> (imm - 1)) & 0x01; \ |
| 1361 | dest >>= imm; \ |
| 1362 | } \ |
| 1363 | |
| 1364 | #define thumb_shift_asr_imm() \ |
| 1365 | u32 dest; \ |
| 1366 | if(imm == 0) \ |
| 1367 | { \ |
| 1368 | dest = (s32)reg[rs] >> 31; \ |
| 1369 | c_flag = dest & 0x01; \ |
| 1370 | } \ |
| 1371 | else \ |
| 1372 | { \ |
| 1373 | dest = reg[rs]; \ |
| 1374 | c_flag = (dest >> (imm - 1)) & 0x01; \ |
| 1375 | dest = (s32)dest >> imm; \ |
| 1376 | } \ |
| 1377 | |
| 1378 | #define thumb_shift_ror_imm() \ |
| 1379 | u32 dest = reg[rs]; \ |
| 1380 | if(imm == 0) \ |
| 1381 | { \ |
| 1382 | u32 old_c_flag = c_flag; \ |
| 1383 | c_flag = dest & 0x01; \ |
| 1384 | dest = (dest >> 1) | (old_c_flag << 31); \ |
| 1385 | } \ |
| 1386 | else \ |
| 1387 | { \ |
| 1388 | c_flag = (dest >> (imm - 1)) & 0x01; \ |
| 1389 | ror(dest, dest, imm); \ |
| 1390 | } \ |
| 1391 | |
| 1392 | #define thumb_shift(decode_type, op_type, value_type) \ |
| 1393 | { \ |
| 1394 | thumb_decode_##decode_type(); \ |
| 1395 | thumb_shift_##op_type##_##value_type(); \ |
| 1396 | calculate_flags_logic(dest); \ |
| 1397 | reg[rd] = dest; \ |
| 1398 | thumb_pc_offset(2); \ |
| 1399 | } \ |
| 1400 | |
| 1401 | #define thumb_test_add(type, src_a, src_b) \ |
| 1402 | { \ |
| 1403 | thumb_decode_##type(); \ |
| 1404 | const u32 _sa = src_a; \ |
| 1405 | const u32 _sb = src_b; \ |
| 1406 | u32 dest = _sa + _sb; \ |
| 1407 | calculate_flags_add(dest, src_a, src_b); \ |
| 1408 | thumb_pc_offset(2); \ |
| 1409 | } \ |
| 1410 | |
| 1411 | #define thumb_test_sub(type, src_a, src_b) \ |
| 1412 | { \ |
| 1413 | thumb_decode_##type(); \ |
| 1414 | const u32 _sa = src_a; \ |
| 1415 | const u32 _sb = src_b; \ |
| 1416 | u32 dest = _sa - _sb; \ |
| 1417 | calculate_flags_sub(dest, src_a, src_b); \ |
| 1418 | thumb_pc_offset(2); \ |
| 1419 | } \ |
| 1420 | |
| 1421 | #define thumb_test_logic(type, expr) \ |
| 1422 | { \ |
| 1423 | thumb_decode_##type(); \ |
| 1424 | u32 dest = expr; \ |
| 1425 | calculate_flags_logic(dest); \ |
| 1426 | thumb_pc_offset(2); \ |
| 1427 | } |
| 1428 | |
| 1429 | #define thumb_hireg_op(expr) \ |
| 1430 | { \ |
| 1431 | thumb_pc_offset(4); \ |
| 1432 | thumb_decode_hireg_op(); \ |
| 1433 | u32 dest = expr; \ |
| 1434 | thumb_pc_offset(-2); \ |
| 1435 | if(rd == 15) \ |
| 1436 | { \ |
| 1437 | reg[REG_PC] = dest & ~0x01; \ |
| 1438 | thumb_update_pc(); \ |
| 1439 | } \ |
| 1440 | else \ |
| 1441 | { \ |
| 1442 | reg[rd] = dest; \ |
| 1443 | } \ |
| 1444 | } \ |
| 1445 | |
| 1446 | // Operation types: imm, mem_reg, mem_imm |
| 1447 | |
| 1448 | #define thumb_access_memory(access_type, op_type, address, reg_op, \ |
| 1449 | mem_type) \ |
| 1450 | { \ |
| 1451 | thumb_decode_##op_type(); \ |
| 1452 | access_type##_memory_##mem_type(address, reg_op); \ |
| 1453 | thumb_pc_offset(2); \ |
| 1454 | } \ |
| 1455 | |
| 1456 | #define thumb_block_address_preadjust_no_op() \ |
| 1457 | |
| 1458 | #define thumb_block_address_preadjust_up() \ |
| 1459 | address += bit_count[reg_list] * 4 \ |
| 1460 | |
| 1461 | #define thumb_block_address_preadjust_down() \ |
| 1462 | address -= bit_count[reg_list] * 4 \ |
| 1463 | |
| 1464 | #define thumb_block_address_preadjust_push_lr() \ |
| 1465 | address -= (bit_count[reg_list] + 1) * 4 \ |
| 1466 | |
| 1467 | #define thumb_block_address_postadjust_no_op() \ |
| 1468 | |
| 1469 | #define thumb_block_address_postadjust_up() \ |
| 1470 | address += offset \ |
| 1471 | |
| 1472 | #define thumb_block_address_postadjust_down() \ |
| 1473 | address -= offset \ |
| 1474 | |
| 1475 | #define thumb_block_address_postadjust_pop_pc() \ |
| 1476 | load_memory_u32(address + offset, pc); \ |
| 1477 | pc &= ~0x01; \ |
| 1478 | reg[REG_PC] = pc; \ |
| 1479 | address += offset + 4 \ |
| 1480 | |
| 1481 | #define thumb_block_address_postadjust_push_lr() \ |
| 1482 | store_memory_u32(address + offset, reg[REG_LR]); \ |
| 1483 | |
| 1484 | #define thumb_block_memory_wb_load(base_reg) \ |
| 1485 | if(!((reg_list >> base_reg) & 0x01)) \ |
| 1486 | { \ |
| 1487 | reg[base_reg] = address; \ |
| 1488 | } \ |
| 1489 | |
| 1490 | #define thumb_block_memory_wb_store(base_reg) \ |
| 1491 | reg[base_reg] = address \ |
| 1492 | |
| 1493 | #define thumb_block_memory(access_type, pre_op, post_op, base_reg) \ |
| 1494 | { \ |
| 1495 | u32 i; \ |
| 1496 | u32 offset = 0; \ |
| 1497 | thumb_decode_rlist(); \ |
| 1498 | using_register(thumb, base_reg, memory_base); \ |
| 1499 | u32 address = reg[base_reg] & ~0x03; \ |
| 1500 | thumb_block_address_preadjust_##pre_op(); \ |
| 1501 | \ |
| 1502 | for(i = 0; i < 8; i++) \ |
| 1503 | { \ |
| 1504 | if((reg_list >> i) & 1) \ |
| 1505 | { \ |
| 1506 | access_type##_aligned32(address + offset, reg[i]); \ |
| 1507 | offset += 4; \ |
| 1508 | } \ |
| 1509 | } \ |
| 1510 | \ |
| 1511 | thumb_pc_offset(2); \ |
| 1512 | \ |
| 1513 | thumb_block_address_postadjust_##post_op(); \ |
| 1514 | thumb_block_memory_wb_##access_type(base_reg); \ |
| 1515 | } \ |
| 1516 | |
| 1517 | #define thumb_conditional_branch(condition) \ |
| 1518 | { \ |
| 1519 | thumb_decode_branch_cond(); \ |
| 1520 | if(condition) \ |
| 1521 | { \ |
| 1522 | thumb_pc_offset((offset * 2) + 4); \ |
| 1523 | } \ |
| 1524 | else \ |
| 1525 | { \ |
| 1526 | thumb_pc_offset(2); \ |
| 1527 | } \ |
| 1528 | } \ |
| 1529 | |
| 1530 | // When a mode change occurs from non-FIQ to non-FIQ retire the current |
| 1531 | // reg[13] and reg[14] into reg_mode[cpu_mode][5] and reg_mode[cpu_mode][6] |
| 1532 | // respectively and load into reg[13] and reg[14] reg_mode[new_mode][5] and |
| 1533 | // reg_mode[new_mode][6]. When swapping to/from FIQ retire/load reg[8] |
| 1534 | // through reg[14] to/from reg_mode[MODE_FIQ][0] through reg_mode[MODE_FIQ][6]. |
| 1535 | |
| 1536 | u32 reg_mode[7][7]; |
| 1537 | |
| 1538 | u32 cpu_modes[32] = |
| 1539 | { |
| 1540 | MODE_INVALID, MODE_INVALID, MODE_INVALID, MODE_INVALID, MODE_INVALID, |
| 1541 | MODE_INVALID, MODE_INVALID, MODE_INVALID, MODE_INVALID, MODE_INVALID, |
| 1542 | MODE_INVALID, MODE_INVALID, MODE_INVALID, MODE_INVALID, MODE_INVALID, |
| 1543 | MODE_INVALID, MODE_USER, MODE_FIQ, MODE_IRQ, MODE_SUPERVISOR, MODE_INVALID, |
| 1544 | MODE_INVALID, MODE_INVALID, MODE_ABORT, MODE_INVALID, MODE_INVALID, |
| 1545 | MODE_INVALID, MODE_INVALID, MODE_UNDEFINED, MODE_INVALID, MODE_INVALID, |
| 1546 | MODE_USER |
| 1547 | }; |
| 1548 | |
| 1549 | u32 cpu_modes_cpsr[7] = { 0x10, 0x11, 0x12, 0x13, 0x17, 0x1B, 0x1F }; |
| 1550 | |
| 1551 | // When switching modes set spsr[new_mode] to cpsr. Modifying PC as the |
| 1552 | // target of a data proc instruction will set cpsr to spsr[cpu_mode]. |
| 1553 | |
| 1554 | u32 initial_reg[64]; |
| 1555 | u32 *reg = initial_reg; |
| 1556 | u32 spsr[6]; |
| 1557 | |
| 1558 | // ARM/Thumb mode is stored in the flags directly, this is simpler than |
| 1559 | // shadowing it since it has a constant 1bit represenation. |
| 1560 | |
| 1561 | char *reg_names[16] = |
| 1562 | { |
| 1563 | " r0", " r1", " r2", " r3", " r4", " r5", " r6", " r7", |
| 1564 | " r8", " r9", "r10", " fp", " ip", " sp", " lr", " pc" |
| 1565 | }; |
| 1566 | |
| 1567 | char *cpu_mode_names[] = |
| 1568 | { |
| 1569 | "user", "irq", "fiq", "svsr", "abrt", "undf", "invd" |
| 1570 | }; |
| 1571 | |
| 1572 | |
| 1573 | #define execute_arm_instruction() \ |
| 1574 | using_instruction(arm); \ |
| 1575 | check_pc_region(); \ |
| 1576 | pc &= ~0x03; \ |
| 1577 | opcode = address32(pc_address_block, (pc & 0x7FFF)); \ |
| 1578 | condition = opcode >> 28; \ |
| 1579 | \ |
| 1580 | switch(condition) \ |
| 1581 | { \ |
| 1582 | case 0x0: \ |
| 1583 | /* EQ */ \ |
| 1584 | if(!z_flag) \ |
| 1585 | arm_next_instruction(); \ |
| 1586 | break; \ |
| 1587 | \ |
| 1588 | case 0x1: \ |
| 1589 | /* NE */ \ |
| 1590 | if(z_flag) \ |
| 1591 | arm_next_instruction(); \ |
| 1592 | break; \ |
| 1593 | \ |
| 1594 | case 0x2: \ |
| 1595 | /* CS */ \ |
| 1596 | if(!c_flag) \ |
| 1597 | arm_next_instruction(); \ |
| 1598 | break; \ |
| 1599 | \ |
| 1600 | case 0x3: \ |
| 1601 | /* CC */ \ |
| 1602 | if(c_flag) \ |
| 1603 | arm_next_instruction(); \ |
| 1604 | break; \ |
| 1605 | \ |
| 1606 | case 0x4: \ |
| 1607 | /* MI */ \ |
| 1608 | if(!n_flag) \ |
| 1609 | arm_next_instruction(); \ |
| 1610 | break; \ |
| 1611 | \ |
| 1612 | case 0x5: \ |
| 1613 | /* PL */ \ |
| 1614 | if(n_flag) \ |
| 1615 | arm_next_instruction(); \ |
| 1616 | break; \ |
| 1617 | \ |
| 1618 | case 0x6: \ |
| 1619 | /* VS */ \ |
| 1620 | if(!v_flag) \ |
| 1621 | arm_next_instruction(); \ |
| 1622 | break; \ |
| 1623 | \ |
| 1624 | case 0x7: \ |
| 1625 | /* VC */ \ |
| 1626 | if(v_flag) \ |
| 1627 | arm_next_instruction(); \ |
| 1628 | break; \ |
| 1629 | \ |
| 1630 | case 0x8: \ |
| 1631 | /* HI */ \ |
| 1632 | if((c_flag == 0) | z_flag) \ |
| 1633 | arm_next_instruction(); \ |
| 1634 | break; \ |
| 1635 | \ |
| 1636 | case 0x9: \ |
| 1637 | /* LS */ \ |
| 1638 | if(c_flag & (z_flag ^ 1)) \ |
| 1639 | arm_next_instruction(); \ |
| 1640 | break; \ |
| 1641 | \ |
| 1642 | case 0xA: \ |
| 1643 | /* GE */ \ |
| 1644 | if(n_flag != v_flag) \ |
| 1645 | arm_next_instruction(); \ |
| 1646 | break; \ |
| 1647 | \ |
| 1648 | case 0xB: \ |
| 1649 | /* LT */ \ |
| 1650 | if(n_flag == v_flag) \ |
| 1651 | arm_next_instruction(); \ |
| 1652 | break; \ |
| 1653 | \ |
| 1654 | case 0xC: \ |
| 1655 | /* GT */ \ |
| 1656 | if(z_flag | (n_flag != v_flag)) \ |
| 1657 | arm_next_instruction(); \ |
| 1658 | break; \ |
| 1659 | \ |
| 1660 | case 0xD: \ |
| 1661 | /* LE */ \ |
| 1662 | if((z_flag == 0) & (n_flag == v_flag)) \ |
| 1663 | arm_next_instruction(); \ |
| 1664 | break; \ |
| 1665 | \ |
| 1666 | case 0xE: \ |
| 1667 | /* AL */ \ |
| 1668 | break; \ |
| 1669 | \ |
| 1670 | case 0xF: \ |
| 1671 | /* Reserved - treat as "never" */ \ |
| 1672 | quit(); \ |
| 1673 | arm_next_instruction(); \ |
| 1674 | break; \ |
| 1675 | } \ |
| 1676 | \ |
| 1677 | switch((opcode >> 20) & 0xFF) \ |
| 1678 | { \ |
| 1679 | case 0x00: \ |
| 1680 | if((opcode & 0x90) == 0x90) \ |
| 1681 | { \ |
| 1682 | if(opcode & 0x20) \ |
| 1683 | { \ |
| 1684 | /* STRH rd, [rn], -rm */ \ |
| 1685 | arm_access_memory(store, no_op, half_reg, u16, yes, - reg[rm]); \ |
| 1686 | } \ |
| 1687 | else \ |
| 1688 | { \ |
| 1689 | /* MUL rd, rm, rs */ \ |
| 1690 | arm_multiply(no_op, no); \ |
| 1691 | } \ |
| 1692 | } \ |
| 1693 | else \ |
| 1694 | { \ |
| 1695 | /* AND rd, rn, reg_op */ \ |
| 1696 | arm_data_proc(reg[rn] & reg_sh, reg); \ |
| 1697 | } \ |
| 1698 | break; \ |
| 1699 | \ |
| 1700 | case 0x01: \ |
| 1701 | if((opcode & 0x90) == 0x90) \ |
| 1702 | { \ |
| 1703 | switch((opcode >> 5) & 0x03) \ |
| 1704 | { \ |
| 1705 | case 0: \ |
| 1706 | /* MULS rd, rm, rs */ \ |
| 1707 | arm_multiply(no_op, yes); \ |
| 1708 | break; \ |
| 1709 | \ |
| 1710 | case 1: \ |
| 1711 | /* LDRH rd, [rn], -rm */ \ |
| 1712 | arm_access_memory(load, no_op, half_reg, u16, yes, - reg[rm]); \ |
| 1713 | break; \ |
| 1714 | \ |
| 1715 | case 2: \ |
| 1716 | /* LDRSB rd, [rn], -rm */ \ |
| 1717 | arm_access_memory(load, no_op, half_reg, s8, yes, - reg[rm]); \ |
| 1718 | break; \ |
| 1719 | \ |
| 1720 | case 3: \ |
| 1721 | /* LDRSH rd, [rn], -rm */ \ |
| 1722 | arm_access_memory(load, no_op, half_reg, s16, yes, - reg[rm]); \ |
| 1723 | break; \ |
| 1724 | } \ |
| 1725 | } \ |
| 1726 | else \ |
| 1727 | { \ |
| 1728 | /* ANDS rd, rn, reg_op */ \ |
| 1729 | arm_data_proc_logic_flags(reg[rn] & reg_sh, reg); \ |
| 1730 | } \ |
| 1731 | break; \ |
| 1732 | \ |
| 1733 | case 0x02: \ |
| 1734 | if((opcode & 0x90) == 0x90) \ |
| 1735 | { \ |
| 1736 | if(opcode & 0x20) \ |
| 1737 | { \ |
| 1738 | /* STRH rd, [rn], -rm */ \ |
| 1739 | arm_access_memory(store, no_op, half_reg, u16, yes, - reg[rm]); \ |
| 1740 | } \ |
| 1741 | else \ |
| 1742 | { \ |
| 1743 | /* MLA rd, rm, rs, rn */ \ |
| 1744 | arm_multiply(+ reg[rn], no); \ |
| 1745 | } \ |
| 1746 | } \ |
| 1747 | else \ |
| 1748 | { \ |
| 1749 | /* EOR rd, rn, reg_op */ \ |
| 1750 | arm_data_proc(reg[rn] ^ reg_sh, reg); \ |
| 1751 | } \ |
| 1752 | break; \ |
| 1753 | \ |
| 1754 | case 0x03: \ |
| 1755 | if((opcode & 0x90) == 0x90) \ |
| 1756 | { \ |
| 1757 | switch((opcode >> 5) & 0x03) \ |
| 1758 | { \ |
| 1759 | case 0: \ |
| 1760 | /* MLAS rd, rm, rs, rn */ \ |
| 1761 | arm_multiply(+ reg[rn], yes); \ |
| 1762 | break; \ |
| 1763 | \ |
| 1764 | case 1: \ |
| 1765 | /* LDRH rd, [rn], -rm */ \ |
| 1766 | arm_access_memory(load, no_op, half_reg, u16, yes, - reg[rm]); \ |
| 1767 | break; \ |
| 1768 | \ |
| 1769 | case 2: \ |
| 1770 | /* LDRSB rd, [rn], -rm */ \ |
| 1771 | arm_access_memory(load, no_op, half_reg, s8, yes, - reg[rm]); \ |
| 1772 | break; \ |
| 1773 | \ |
| 1774 | case 3: \ |
| 1775 | /* LDRSH rd, [rn], -rm */ \ |
| 1776 | arm_access_memory(load, no_op, half_reg, s16, yes, - reg[rm]); \ |
| 1777 | break; \ |
| 1778 | } \ |
| 1779 | } \ |
| 1780 | else \ |
| 1781 | { \ |
| 1782 | /* EORS rd, rn, reg_op */ \ |
| 1783 | arm_data_proc_logic_flags(reg[rn] ^ reg_sh, reg); \ |
| 1784 | } \ |
| 1785 | break; \ |
| 1786 | \ |
| 1787 | case 0x04: \ |
| 1788 | if((opcode & 0x90) == 0x90) \ |
| 1789 | { \ |
| 1790 | /* STRH rd, [rn], -imm */ \ |
| 1791 | arm_access_memory(store, no_op, half_imm, u16, yes, - offset); \ |
| 1792 | } \ |
| 1793 | else \ |
| 1794 | { \ |
| 1795 | /* SUB rd, rn, reg_op */ \ |
| 1796 | arm_data_proc(reg[rn] - reg_sh, reg); \ |
| 1797 | } \ |
| 1798 | break; \ |
| 1799 | \ |
| 1800 | case 0x05: \ |
| 1801 | if((opcode & 0x90) == 0x90) \ |
| 1802 | { \ |
| 1803 | switch((opcode >> 5) & 0x03) \ |
| 1804 | { \ |
| 1805 | case 1: \ |
| 1806 | /* LDRH rd, [rn], -imm */ \ |
| 1807 | arm_access_memory(load, no_op, half_imm, u16, yes, - offset); \ |
| 1808 | break; \ |
| 1809 | \ |
| 1810 | case 2: \ |
| 1811 | /* LDRSB rd, [rn], -imm */ \ |
| 1812 | arm_access_memory(load, no_op, half_imm, s8, yes, - offset); \ |
| 1813 | break; \ |
| 1814 | \ |
| 1815 | case 3: \ |
| 1816 | /* LDRSH rd, [rn], -imm */ \ |
| 1817 | arm_access_memory(load, no_op, half_imm, s16, yes, - offset); \ |
| 1818 | break; \ |
| 1819 | } \ |
| 1820 | } \ |
| 1821 | else \ |
| 1822 | { \ |
| 1823 | /* SUBS rd, rn, reg_op */ \ |
| 1824 | arm_data_proc_sub_flags(reg[rn], reg_sh, reg); \ |
| 1825 | } \ |
| 1826 | break; \ |
| 1827 | \ |
| 1828 | case 0x06: \ |
| 1829 | if((opcode & 0x90) == 0x90) \ |
| 1830 | { \ |
| 1831 | /* STRH rd, [rn], -imm */ \ |
| 1832 | arm_access_memory(store, no_op, half_imm, u16, yes, - offset); \ |
| 1833 | } \ |
| 1834 | else \ |
| 1835 | { \ |
| 1836 | /* RSB rd, rn, reg_op */ \ |
| 1837 | arm_data_proc(reg_sh - reg[rn], reg); \ |
| 1838 | } \ |
| 1839 | break; \ |
| 1840 | \ |
| 1841 | case 0x07: \ |
| 1842 | if((opcode & 0x90) == 0x90) \ |
| 1843 | { \ |
| 1844 | switch((opcode >> 5) & 0x03) \ |
| 1845 | { \ |
| 1846 | case 1: \ |
| 1847 | /* LDRH rd, [rn], -imm */ \ |
| 1848 | arm_access_memory(load, no_op, half_imm, u16, yes, - offset); \ |
| 1849 | break; \ |
| 1850 | \ |
| 1851 | case 2: \ |
| 1852 | /* LDRSB rd, [rn], -imm */ \ |
| 1853 | arm_access_memory(load, no_op, half_imm, s8, yes, - offset); \ |
| 1854 | break; \ |
| 1855 | \ |
| 1856 | case 3: \ |
| 1857 | /* LDRSH rd, [rn], -imm */ \ |
| 1858 | arm_access_memory(load, no_op, half_imm, s16, yes, - offset); \ |
| 1859 | break; \ |
| 1860 | } \ |
| 1861 | } \ |
| 1862 | else \ |
| 1863 | { \ |
| 1864 | /* RSBS rd, rn, reg_op */ \ |
| 1865 | arm_data_proc_sub_flags(reg_sh, reg[rn], reg); \ |
| 1866 | } \ |
| 1867 | break; \ |
| 1868 | \ |
| 1869 | case 0x08: \ |
| 1870 | if((opcode & 0x90) == 0x90) \ |
| 1871 | { \ |
| 1872 | if(opcode & 0x20) \ |
| 1873 | { \ |
| 1874 | /* STRH rd, [rn], +rm */ \ |
| 1875 | arm_access_memory(store, no_op, half_reg, u16, yes, + reg[rm]); \ |
| 1876 | } \ |
| 1877 | else \ |
| 1878 | { \ |
| 1879 | /* UMULL rd, rm, rs */ \ |
| 1880 | arm_multiply_long(no_op, no, u); \ |
| 1881 | } \ |
| 1882 | } \ |
| 1883 | else \ |
| 1884 | { \ |
| 1885 | /* ADD rd, rn, reg_op */ \ |
| 1886 | arm_data_proc(reg[rn] + reg_sh, reg); \ |
| 1887 | } \ |
| 1888 | break; \ |
| 1889 | \ |
| 1890 | case 0x09: \ |
| 1891 | if((opcode & 0x90) == 0x90) \ |
| 1892 | { \ |
| 1893 | switch((opcode >> 5) & 0x03) \ |
| 1894 | { \ |
| 1895 | case 0: \ |
| 1896 | /* UMULLS rdlo, rdhi, rm, rs */ \ |
| 1897 | arm_multiply_long(no_op, yes, u); \ |
| 1898 | break; \ |
| 1899 | \ |
| 1900 | case 1: \ |
| 1901 | /* LDRH rd, [rn], +rm */ \ |
| 1902 | arm_access_memory(load, no_op, half_reg, u16, yes, + reg[rm]); \ |
| 1903 | break; \ |
| 1904 | \ |
| 1905 | case 2: \ |
| 1906 | /* LDRSB rd, [rn], +rm */ \ |
| 1907 | arm_access_memory(load, no_op, half_reg, s8, yes, + reg[rm]); \ |
| 1908 | break; \ |
| 1909 | \ |
| 1910 | case 3: \ |
| 1911 | /* LDRSH rd, [rn], +rm */ \ |
| 1912 | arm_access_memory(load, no_op, half_reg, s16, yes, + reg[rm]); \ |
| 1913 | break; \ |
| 1914 | } \ |
| 1915 | } \ |
| 1916 | else \ |
| 1917 | { \ |
| 1918 | /* ADDS rd, rn, reg_op */ \ |
| 1919 | arm_data_proc_add_flags(reg[rn], reg_sh, reg); \ |
| 1920 | } \ |
| 1921 | break; \ |
| 1922 | \ |
| 1923 | case 0x0A: \ |
| 1924 | if((opcode & 0x90) == 0x90) \ |
| 1925 | { \ |
| 1926 | if(opcode & 0x20) \ |
| 1927 | { \ |
| 1928 | /* STRH rd, [rn], +rm */ \ |
| 1929 | arm_access_memory(store, no_op, half_reg, u16, yes, + reg[rm]); \ |
| 1930 | } \ |
| 1931 | else \ |
| 1932 | { \ |
| 1933 | /* UMLAL rd, rm, rs */ \ |
| 1934 | arm_multiply_long(arm_multiply_long_addop(u), no, u); \ |
| 1935 | } \ |
| 1936 | } \ |
| 1937 | else \ |
| 1938 | { \ |
| 1939 | /* ADC rd, rn, reg_op */ \ |
| 1940 | arm_data_proc(reg[rn] + reg_sh + c_flag, reg); \ |
| 1941 | } \ |
| 1942 | break; \ |
| 1943 | \ |
| 1944 | case 0x0B: \ |
| 1945 | if((opcode & 0x90) == 0x90) \ |
| 1946 | { \ |
| 1947 | switch((opcode >> 5) & 0x03) \ |
| 1948 | { \ |
| 1949 | case 0: \ |
| 1950 | /* UMLALS rdlo, rdhi, rm, rs */ \ |
| 1951 | arm_multiply_long(arm_multiply_long_addop(u), yes, u); \ |
| 1952 | break; \ |
| 1953 | \ |
| 1954 | case 1: \ |
| 1955 | /* LDRH rd, [rn], +rm */ \ |
| 1956 | arm_access_memory(load, no_op, half_reg, u16, yes, + reg[rm]); \ |
| 1957 | break; \ |
| 1958 | \ |
| 1959 | case 2: \ |
| 1960 | /* LDRSB rd, [rn], +rm */ \ |
| 1961 | arm_access_memory(load, no_op, half_reg, s8, yes, + reg[rm]); \ |
| 1962 | break; \ |
| 1963 | \ |
| 1964 | case 3: \ |
| 1965 | /* LDRSH rd, [rn], +rm */ \ |
| 1966 | arm_access_memory(load, no_op, half_reg, s16, yes, + reg[rm]); \ |
| 1967 | break; \ |
| 1968 | } \ |
| 1969 | } \ |
| 1970 | else \ |
| 1971 | { \ |
| 1972 | /* ADCS rd, rn, reg_op */ \ |
| 1973 | arm_data_proc_add_flags(reg[rn], reg_sh + c_flag, reg); \ |
| 1974 | } \ |
| 1975 | break; \ |
| 1976 | \ |
| 1977 | case 0x0C: \ |
| 1978 | if((opcode & 0x90) == 0x90) \ |
| 1979 | { \ |
| 1980 | if(opcode & 0x20) \ |
| 1981 | { \ |
| 1982 | /* STRH rd, [rn], +imm */ \ |
| 1983 | arm_access_memory(store, no_op, half_imm, u16, yes, + offset); \ |
| 1984 | } \ |
| 1985 | else \ |
| 1986 | { \ |
| 1987 | /* SMULL rd, rm, rs */ \ |
| 1988 | arm_multiply_long(no_op, no, s); \ |
| 1989 | } \ |
| 1990 | } \ |
| 1991 | else \ |
| 1992 | { \ |
| 1993 | /* SBC rd, rn, reg_op */ \ |
| 1994 | arm_data_proc(reg[rn] - (reg_sh + (c_flag ^ 1)), reg); \ |
| 1995 | } \ |
| 1996 | break; \ |
| 1997 | \ |
| 1998 | case 0x0D: \ |
| 1999 | if((opcode & 0x90) == 0x90) \ |
| 2000 | { \ |
| 2001 | switch((opcode >> 5) & 0x03) \ |
| 2002 | { \ |
| 2003 | case 0: \ |
| 2004 | /* SMULLS rdlo, rdhi, rm, rs */ \ |
| 2005 | arm_multiply_long(no_op, yes, s); \ |
| 2006 | break; \ |
| 2007 | \ |
| 2008 | case 1: \ |
| 2009 | /* LDRH rd, [rn], +imm */ \ |
| 2010 | arm_access_memory(load, no_op, half_imm, u16, yes, + offset); \ |
| 2011 | break; \ |
| 2012 | \ |
| 2013 | case 2: \ |
| 2014 | /* LDRSB rd, [rn], +imm */ \ |
| 2015 | arm_access_memory(load, no_op, half_imm, s8, yes, + offset); \ |
| 2016 | break; \ |
| 2017 | \ |
| 2018 | case 3: \ |
| 2019 | /* LDRSH rd, [rn], +imm */ \ |
| 2020 | arm_access_memory(load, no_op, half_imm, s16, yes, + offset); \ |
| 2021 | break; \ |
| 2022 | } \ |
| 2023 | } \ |
| 2024 | else \ |
| 2025 | { \ |
| 2026 | /* SBCS rd, rn, reg_op */ \ |
| 2027 | arm_data_proc_sub_flags(reg[rn], (reg_sh + (c_flag ^ 1)), reg); \ |
| 2028 | } \ |
| 2029 | break; \ |
| 2030 | \ |
| 2031 | case 0x0E: \ |
| 2032 | if((opcode & 0x90) == 0x90) \ |
| 2033 | { \ |
| 2034 | if(opcode & 0x20) \ |
| 2035 | { \ |
| 2036 | /* STRH rd, [rn], +imm */ \ |
| 2037 | arm_access_memory(store, no_op, half_imm, u16, yes, + offset); \ |
| 2038 | } \ |
| 2039 | else \ |
| 2040 | { \ |
| 2041 | /* SMLAL rd, rm, rs */ \ |
| 2042 | arm_multiply_long(arm_multiply_long_addop(s), no, s); \ |
| 2043 | } \ |
| 2044 | } \ |
| 2045 | else \ |
| 2046 | { \ |
| 2047 | /* RSC rd, rn, reg_op */ \ |
| 2048 | arm_data_proc(reg_sh - reg[rn] + c_flag - 1, reg); \ |
| 2049 | } \ |
| 2050 | break; \ |
| 2051 | \ |
| 2052 | case 0x0F: \ |
| 2053 | if((opcode & 0x90) == 0x90) \ |
| 2054 | { \ |
| 2055 | switch((opcode >> 5) & 0x03) \ |
| 2056 | { \ |
| 2057 | case 0: \ |
| 2058 | /* SMLALS rdlo, rdhi, rm, rs */ \ |
| 2059 | arm_multiply_long(arm_multiply_long_addop(s), yes, s); \ |
| 2060 | break; \ |
| 2061 | \ |
| 2062 | case 1: \ |
| 2063 | /* LDRH rd, [rn], +imm */ \ |
| 2064 | arm_access_memory(load, no_op, half_imm, u16, yes, + offset); \ |
| 2065 | break; \ |
| 2066 | \ |
| 2067 | case 2: \ |
| 2068 | /* LDRSB rd, [rn], +imm */ \ |
| 2069 | arm_access_memory(load, no_op, half_imm, s8, yes, + offset); \ |
| 2070 | break; \ |
| 2071 | \ |
| 2072 | case 3: \ |
| 2073 | /* LDRSH rd, [rn], +imm */ \ |
| 2074 | arm_access_memory(load, no_op, half_imm, s16, yes, + offset); \ |
| 2075 | break; \ |
| 2076 | } \ |
| 2077 | } \ |
| 2078 | else \ |
| 2079 | { \ |
| 2080 | /* RSCS rd, rn, reg_op */ \ |
| 2081 | arm_data_proc_sub_flags((reg_sh + c_flag - 1), reg[rn], reg); \ |
| 2082 | } \ |
| 2083 | break; \ |
| 2084 | \ |
| 2085 | case 0x10: \ |
| 2086 | if((opcode & 0x90) == 0x90) \ |
| 2087 | { \ |
| 2088 | if(opcode & 0x20) \ |
| 2089 | { \ |
| 2090 | /* STRH rd, [rn - rm] */ \ |
| 2091 | arm_access_memory(store, - reg[rm], half_reg, u16, no, no_op); \ |
| 2092 | } \ |
| 2093 | else \ |
| 2094 | { \ |
| 2095 | /* SWP rd, rm, [rn] */ \ |
| 2096 | arm_swap(u32); \ |
| 2097 | } \ |
| 2098 | } \ |
| 2099 | else \ |
| 2100 | { \ |
| 2101 | /* MRS rd, cpsr */ \ |
| 2102 | arm_psr(reg, read, reg[REG_CPSR]); \ |
| 2103 | } \ |
| 2104 | break; \ |
| 2105 | \ |
| 2106 | case 0x11: \ |
| 2107 | if((opcode & 0x90) == 0x90) \ |
| 2108 | { \ |
| 2109 | switch((opcode >> 5) & 0x03) \ |
| 2110 | { \ |
| 2111 | case 1: \ |
| 2112 | /* LDRH rd, [rn - rm] */ \ |
| 2113 | arm_access_memory(load, - reg[rm], half_reg, u16, no, no_op); \ |
| 2114 | break; \ |
| 2115 | \ |
| 2116 | case 2: \ |
| 2117 | /* LDRSB rd, [rn - rm] */ \ |
| 2118 | arm_access_memory(load, - reg[rm], half_reg, s8, no, no_op); \ |
| 2119 | break; \ |
| 2120 | \ |
| 2121 | case 3: \ |
| 2122 | /* LDRSH rd, [rn - rm] */ \ |
| 2123 | arm_access_memory(load, - reg[rm], half_reg, s16, no, no_op); \ |
| 2124 | break; \ |
| 2125 | } \ |
| 2126 | } \ |
| 2127 | else \ |
| 2128 | { \ |
| 2129 | /* TST rd, rn, reg_op */ \ |
| 2130 | arm_data_proc_test_logic(reg[rn] & reg_sh, reg); \ |
| 2131 | } \ |
| 2132 | break; \ |
| 2133 | \ |
| 2134 | case 0x12: \ |
| 2135 | if((opcode & 0x90) == 0x90) \ |
| 2136 | { \ |
| 2137 | /* STRH rd, [rn - rm]! */ \ |
| 2138 | arm_access_memory(store, - reg[rm], half_reg, u16, yes, no_op); \ |
| 2139 | } \ |
| 2140 | else \ |
| 2141 | { \ |
| 2142 | if(opcode & 0x10) \ |
| 2143 | { \ |
| 2144 | /* BX rn */ \ |
| 2145 | arm_decode_branchx(); \ |
| 2146 | u32 src = reg[rn]; \ |
| 2147 | if(src & 0x01) \ |
| 2148 | { \ |
| 2149 | src -= 1; \ |
| 2150 | arm_pc_offset_update_direct(src); \ |
| 2151 | reg[REG_CPSR] |= 0x20; \ |
| 2152 | goto thumb_loop; \ |
| 2153 | } \ |
| 2154 | else \ |
| 2155 | { \ |
| 2156 | arm_pc_offset_update_direct(src); \ |
| 2157 | } \ |
| 2158 | } \ |
| 2159 | else \ |
| 2160 | { \ |
| 2161 | /* MSR cpsr, rm */ \ |
| 2162 | arm_psr(reg, store, cpsr); \ |
| 2163 | } \ |
| 2164 | } \ |
| 2165 | break; \ |
| 2166 | \ |
| 2167 | case 0x13: \ |
| 2168 | if((opcode & 0x90) == 0x90) \ |
| 2169 | { \ |
| 2170 | switch((opcode >> 5) & 0x03) \ |
| 2171 | { \ |
| 2172 | case 1: \ |
| 2173 | /* LDRH rd, [rn - rm]! */ \ |
| 2174 | arm_access_memory(load, - reg[rm], half_reg, u16, yes, no_op); \ |
| 2175 | break; \ |
| 2176 | \ |
| 2177 | case 2: \ |
| 2178 | /* LDRSB rd, [rn - rm]! */ \ |
| 2179 | arm_access_memory(load, - reg[rm], half_reg, s8, yes, no_op); \ |
| 2180 | break; \ |
| 2181 | \ |
| 2182 | case 3: \ |
| 2183 | /* LDRSH rd, [rn - rm]! */ \ |
| 2184 | arm_access_memory(load, - reg[rm], half_reg, s16, yes, no_op); \ |
| 2185 | break; \ |
| 2186 | } \ |
| 2187 | } \ |
| 2188 | else \ |
| 2189 | { \ |
| 2190 | /* TEQ rd, rn, reg_op */ \ |
| 2191 | arm_data_proc_test_logic(reg[rn] ^ reg_sh, reg); \ |
| 2192 | } \ |
| 2193 | break; \ |
| 2194 | \ |
| 2195 | case 0x14: \ |
| 2196 | if((opcode & 0x90) == 0x90) \ |
| 2197 | { \ |
| 2198 | if(opcode & 0x20) \ |
| 2199 | { \ |
| 2200 | /* STRH rd, [rn - imm] */ \ |
| 2201 | arm_access_memory(store, - offset, half_imm, u16, no, no_op); \ |
| 2202 | } \ |
| 2203 | else \ |
| 2204 | { \ |
| 2205 | /* SWPB rd, rm, [rn] */ \ |
| 2206 | arm_swap(u8); \ |
| 2207 | } \ |
| 2208 | } \ |
| 2209 | else \ |
| 2210 | { \ |
| 2211 | /* MRS rd, spsr */ \ |
| 2212 | arm_psr(reg, read, spsr[reg[CPU_MODE]]); \ |
| 2213 | } \ |
| 2214 | break; \ |
| 2215 | \ |
| 2216 | case 0x15: \ |
| 2217 | if((opcode & 0x90) == 0x90) \ |
| 2218 | { \ |
| 2219 | switch((opcode >> 5) & 0x03) \ |
| 2220 | { \ |
| 2221 | case 1: \ |
| 2222 | /* LDRH rd, [rn - imm] */ \ |
| 2223 | arm_access_memory(load, - offset, half_imm, u16, no, no_op); \ |
| 2224 | break; \ |
| 2225 | \ |
| 2226 | case 2: \ |
| 2227 | /* LDRSB rd, [rn - imm] */ \ |
| 2228 | arm_access_memory(load, - offset, half_imm, s8, no, no_op); \ |
| 2229 | break; \ |
| 2230 | \ |
| 2231 | case 3: \ |
| 2232 | /* LDRSH rd, [rn - imm] */ \ |
| 2233 | arm_access_memory(load, - offset, half_imm, s16, no, no_op); \ |
| 2234 | break; \ |
| 2235 | } \ |
| 2236 | } \ |
| 2237 | else \ |
| 2238 | { \ |
| 2239 | /* CMP rn, reg_op */ \ |
| 2240 | arm_data_proc_test_sub(reg[rn], reg_sh, reg); \ |
| 2241 | } \ |
| 2242 | break; \ |
| 2243 | \ |
| 2244 | case 0x16: \ |
| 2245 | if((opcode & 0x90) == 0x90) \ |
| 2246 | { \ |
| 2247 | /* STRH rd, [rn - imm]! */ \ |
| 2248 | arm_access_memory(store, - offset, half_imm, u16, yes, no_op); \ |
| 2249 | } \ |
| 2250 | else \ |
| 2251 | { \ |
| 2252 | /* MSR spsr, rm */ \ |
| 2253 | arm_psr(reg, store, spsr); \ |
| 2254 | } \ |
| 2255 | break; \ |
| 2256 | \ |
| 2257 | case 0x17: \ |
| 2258 | if((opcode & 0x90) == 0x90) \ |
| 2259 | { \ |
| 2260 | switch((opcode >> 5) & 0x03) \ |
| 2261 | { \ |
| 2262 | case 1: \ |
| 2263 | /* LDRH rd, [rn - imm]! */ \ |
| 2264 | arm_access_memory(load, - offset, half_imm, u16, yes, no_op); \ |
| 2265 | break; \ |
| 2266 | \ |
| 2267 | case 2: \ |
| 2268 | /* LDRSB rd, [rn - imm]! */ \ |
| 2269 | arm_access_memory(load, - offset, half_imm, s8, yes, no_op); \ |
| 2270 | break; \ |
| 2271 | \ |
| 2272 | case 3: \ |
| 2273 | /* LDRSH rd, [rn - imm]! */ \ |
| 2274 | arm_access_memory(load, - offset, half_imm, s16, yes, no_op); \ |
| 2275 | break; \ |
| 2276 | } \ |
| 2277 | } \ |
| 2278 | else \ |
| 2279 | { \ |
| 2280 | /* CMN rd, rn, reg_op */ \ |
| 2281 | arm_data_proc_test_add(reg[rn], reg_sh, reg); \ |
| 2282 | } \ |
| 2283 | break; \ |
| 2284 | \ |
| 2285 | case 0x18: \ |
| 2286 | if((opcode & 0x90) == 0x90) \ |
| 2287 | { \ |
| 2288 | /* STRH rd, [rn + rm] */ \ |
| 2289 | arm_access_memory(store, + reg[rm], half_reg, u16, no, no_op); \ |
| 2290 | } \ |
| 2291 | else \ |
| 2292 | { \ |
| 2293 | /* ORR rd, rn, reg_op */ \ |
| 2294 | arm_data_proc(reg[rn] | reg_sh, reg); \ |
| 2295 | } \ |
| 2296 | break; \ |
| 2297 | \ |
| 2298 | case 0x19: \ |
| 2299 | if((opcode & 0x90) == 0x90) \ |
| 2300 | { \ |
| 2301 | switch((opcode >> 5) & 0x03) \ |
| 2302 | { \ |
| 2303 | case 1: \ |
| 2304 | /* LDRH rd, [rn + rm] */ \ |
| 2305 | arm_access_memory(load, + reg[rm], half_reg, u16, no, no_op); \ |
| 2306 | break; \ |
| 2307 | \ |
| 2308 | case 2: \ |
| 2309 | /* LDRSB rd, [rn + rm] */ \ |
| 2310 | arm_access_memory(load, + reg[rm], half_reg, s8, no, no_op); \ |
| 2311 | break; \ |
| 2312 | \ |
| 2313 | case 3: \ |
| 2314 | /* LDRSH rd, [rn + rm] */ \ |
| 2315 | arm_access_memory(load, + reg[rm], half_reg, s16, no, no_op); \ |
| 2316 | break; \ |
| 2317 | } \ |
| 2318 | } \ |
| 2319 | else \ |
| 2320 | { \ |
| 2321 | /* ORRS rd, rn, reg_op */ \ |
| 2322 | arm_data_proc_logic_flags(reg[rn] | reg_sh, reg); \ |
| 2323 | } \ |
| 2324 | break; \ |
| 2325 | \ |
| 2326 | case 0x1A: \ |
| 2327 | if((opcode & 0x90) == 0x90) \ |
| 2328 | { \ |
| 2329 | /* STRH rd, [rn + rm]! */ \ |
| 2330 | arm_access_memory(store, + reg[rm], half_reg, u16, yes, no_op); \ |
| 2331 | } \ |
| 2332 | else \ |
| 2333 | { \ |
| 2334 | /* MOV rd, reg_op */ \ |
| 2335 | arm_data_proc(reg_sh, reg); \ |
| 2336 | } \ |
| 2337 | break; \ |
| 2338 | \ |
| 2339 | case 0x1B: \ |
| 2340 | if((opcode & 0x90) == 0x90) \ |
| 2341 | { \ |
| 2342 | switch((opcode >> 5) & 0x03) \ |
| 2343 | { \ |
| 2344 | case 1: \ |
| 2345 | /* LDRH rd, [rn + rm]! */ \ |
| 2346 | arm_access_memory(load, + reg[rm], half_reg, u16, yes, no_op); \ |
| 2347 | break; \ |
| 2348 | \ |
| 2349 | case 2: \ |
| 2350 | /* LDRSB rd, [rn + rm]! */ \ |
| 2351 | arm_access_memory(load, + reg[rm], half_reg, s8, yes, no_op); \ |
| 2352 | break; \ |
| 2353 | \ |
| 2354 | case 3: \ |
| 2355 | /* LDRSH rd, [rn + rm]! */ \ |
| 2356 | arm_access_memory(load, + reg[rm], half_reg, s16, yes, no_op); \ |
| 2357 | break; \ |
| 2358 | } \ |
| 2359 | } \ |
| 2360 | else \ |
| 2361 | { \ |
| 2362 | /* MOVS rd, reg_op */ \ |
| 2363 | arm_data_proc_logic_flags(reg_sh, reg); \ |
| 2364 | } \ |
| 2365 | break; \ |
| 2366 | \ |
| 2367 | case 0x1C: \ |
| 2368 | if((opcode & 0x90) == 0x90) \ |
| 2369 | { \ |
| 2370 | /* STRH rd, [rn + imm] */ \ |
| 2371 | arm_access_memory(store, + offset, half_imm, u16, no, no_op); \ |
| 2372 | } \ |
| 2373 | else \ |
| 2374 | { \ |
| 2375 | /* BIC rd, rn, reg_op */ \ |
| 2376 | arm_data_proc(reg[rn] & (~reg_sh), reg); \ |
| 2377 | } \ |
| 2378 | break; \ |
| 2379 | \ |
| 2380 | case 0x1D: \ |
| 2381 | if((opcode & 0x90) == 0x90) \ |
| 2382 | { \ |
| 2383 | switch((opcode >> 5) & 0x03) \ |
| 2384 | { \ |
| 2385 | case 1: \ |
| 2386 | /* LDRH rd, [rn + imm] */ \ |
| 2387 | arm_access_memory(load, + offset, half_imm, u16, no, no_op); \ |
| 2388 | break; \ |
| 2389 | \ |
| 2390 | case 2: \ |
| 2391 | /* LDRSB rd, [rn + imm] */ \ |
| 2392 | arm_access_memory(load, + offset, half_imm, s8, no, no_op); \ |
| 2393 | break; \ |
| 2394 | \ |
| 2395 | case 3: \ |
| 2396 | /* LDRSH rd, [rn + imm] */ \ |
| 2397 | arm_access_memory(load, + offset, half_imm, s16, no, no_op); \ |
| 2398 | break; \ |
| 2399 | } \ |
| 2400 | } \ |
| 2401 | else \ |
| 2402 | { \ |
| 2403 | /* BICS rd, rn, reg_op */ \ |
| 2404 | arm_data_proc_logic_flags(reg[rn] & (~reg_sh), reg); \ |
| 2405 | } \ |
| 2406 | break; \ |
| 2407 | \ |
| 2408 | case 0x1E: \ |
| 2409 | if((opcode & 0x90) == 0x90) \ |
| 2410 | { \ |
| 2411 | /* STRH rd, [rn + imm]! */ \ |
| 2412 | arm_access_memory(store, + offset, half_imm, u16, yes, no_op); \ |
| 2413 | } \ |
| 2414 | else \ |
| 2415 | { \ |
| 2416 | /* MVN rd, reg_op */ \ |
| 2417 | arm_data_proc(~reg_sh, reg); \ |
| 2418 | } \ |
| 2419 | break; \ |
| 2420 | \ |
| 2421 | case 0x1F: \ |
| 2422 | if((opcode & 0x90) == 0x90) \ |
| 2423 | { \ |
| 2424 | switch((opcode >> 5) & 0x03) \ |
| 2425 | { \ |
| 2426 | case 1: \ |
| 2427 | /* LDRH rd, [rn + imm]! */ \ |
| 2428 | arm_access_memory(load, + offset, half_imm, u16, yes, no_op); \ |
| 2429 | break; \ |
| 2430 | \ |
| 2431 | case 2: \ |
| 2432 | /* LDRSB rd, [rn + imm]! */ \ |
| 2433 | arm_access_memory(load, + offset, half_imm, s8, yes, no_op); \ |
| 2434 | break; \ |
| 2435 | \ |
| 2436 | case 3: \ |
| 2437 | /* LDRSH rd, [rn + imm]! */ \ |
| 2438 | arm_access_memory(load, + offset, half_imm, s16, yes, no_op); \ |
| 2439 | break; \ |
| 2440 | } \ |
| 2441 | } \ |
| 2442 | else \ |
| 2443 | { \ |
| 2444 | /* MVNS rd, rn, reg_op */ \ |
| 2445 | arm_data_proc_logic_flags(~reg_sh, reg); \ |
| 2446 | } \ |
| 2447 | break; \ |
| 2448 | \ |
| 2449 | case 0x20: \ |
| 2450 | /* AND rd, rn, imm */ \ |
| 2451 | arm_data_proc(reg[rn] & imm, imm); \ |
| 2452 | break; \ |
| 2453 | \ |
| 2454 | case 0x21: \ |
| 2455 | /* ANDS rd, rn, imm */ \ |
| 2456 | arm_data_proc_logic_flags(reg[rn] & imm, imm); \ |
| 2457 | break; \ |
| 2458 | \ |
| 2459 | case 0x22: \ |
| 2460 | /* EOR rd, rn, imm */ \ |
| 2461 | arm_data_proc(reg[rn] ^ imm, imm); \ |
| 2462 | break; \ |
| 2463 | \ |
| 2464 | case 0x23: \ |
| 2465 | /* EORS rd, rn, imm */ \ |
| 2466 | arm_data_proc_logic_flags(reg[rn] ^ imm, imm); \ |
| 2467 | break; \ |
| 2468 | \ |
| 2469 | case 0x24: \ |
| 2470 | /* SUB rd, rn, imm */ \ |
| 2471 | arm_data_proc(reg[rn] - imm, imm); \ |
| 2472 | break; \ |
| 2473 | \ |
| 2474 | case 0x25: \ |
| 2475 | /* SUBS rd, rn, imm */ \ |
| 2476 | arm_data_proc_sub_flags(reg[rn], imm, imm); \ |
| 2477 | break; \ |
| 2478 | \ |
| 2479 | case 0x26: \ |
| 2480 | /* RSB rd, rn, imm */ \ |
| 2481 | arm_data_proc(imm - reg[rn], imm); \ |
| 2482 | break; \ |
| 2483 | \ |
| 2484 | case 0x27: \ |
| 2485 | /* RSBS rd, rn, imm */ \ |
| 2486 | arm_data_proc_sub_flags(imm, reg[rn], imm); \ |
| 2487 | break; \ |
| 2488 | \ |
| 2489 | case 0x28: \ |
| 2490 | /* ADD rd, rn, imm */ \ |
| 2491 | arm_data_proc(reg[rn] + imm, imm); \ |
| 2492 | break; \ |
| 2493 | \ |
| 2494 | case 0x29: \ |
| 2495 | /* ADDS rd, rn, imm */ \ |
| 2496 | arm_data_proc_add_flags(reg[rn], imm, imm); \ |
| 2497 | break; \ |
| 2498 | \ |
| 2499 | case 0x2A: \ |
| 2500 | /* ADC rd, rn, imm */ \ |
| 2501 | arm_data_proc(reg[rn] + imm + c_flag, imm); \ |
| 2502 | break; \ |
| 2503 | \ |
| 2504 | case 0x2B: \ |
| 2505 | /* ADCS rd, rn, imm */ \ |
| 2506 | arm_data_proc_add_flags(reg[rn] + imm, c_flag, imm); \ |
| 2507 | break; \ |
| 2508 | \ |
| 2509 | case 0x2C: \ |
| 2510 | /* SBC rd, rn, imm */ \ |
| 2511 | arm_data_proc(reg[rn] - imm + c_flag - 1, imm); \ |
| 2512 | break; \ |
| 2513 | \ |
| 2514 | case 0x2D: \ |
| 2515 | /* SBCS rd, rn, imm */ \ |
| 2516 | arm_data_proc_sub_flags(reg[rn], (imm + (c_flag ^ 1)), imm); \ |
| 2517 | break; \ |
| 2518 | \ |
| 2519 | case 0x2E: \ |
| 2520 | /* RSC rd, rn, imm */ \ |
| 2521 | arm_data_proc(imm - reg[rn] + c_flag - 1, imm); \ |
| 2522 | break; \ |
| 2523 | \ |
| 2524 | case 0x2F: \ |
| 2525 | /* RSCS rd, rn, imm */ \ |
| 2526 | arm_data_proc_sub_flags((imm + c_flag - 1), reg[rn], imm); \ |
| 2527 | break; \ |
| 2528 | \ |
| 2529 | case 0x30 ... 0x31: \ |
| 2530 | /* TST rn, imm */ \ |
| 2531 | arm_data_proc_test_logic(reg[rn] & imm, imm); \ |
| 2532 | break; \ |
| 2533 | \ |
| 2534 | case 0x32: \ |
| 2535 | /* MSR cpsr, imm */ \ |
| 2536 | arm_psr(imm, store, cpsr); \ |
| 2537 | break; \ |
| 2538 | \ |
| 2539 | case 0x33: \ |
| 2540 | /* TEQ rn, imm */ \ |
| 2541 | arm_data_proc_test_logic(reg[rn] ^ imm, imm); \ |
| 2542 | break; \ |
| 2543 | \ |
| 2544 | case 0x34 ... 0x35: \ |
| 2545 | /* CMP rn, imm */ \ |
| 2546 | arm_data_proc_test_sub(reg[rn], imm, imm); \ |
| 2547 | break; \ |
| 2548 | \ |
| 2549 | case 0x36: \ |
| 2550 | /* MSR spsr, imm */ \ |
| 2551 | arm_psr(imm, store, spsr); \ |
| 2552 | break; \ |
| 2553 | \ |
| 2554 | case 0x37: \ |
| 2555 | /* CMN rn, imm */ \ |
| 2556 | arm_data_proc_test_add(reg[rn], imm, imm); \ |
| 2557 | break; \ |
| 2558 | \ |
| 2559 | case 0x38: \ |
| 2560 | /* ORR rd, rn, imm */ \ |
| 2561 | arm_data_proc(reg[rn] | imm, imm); \ |
| 2562 | break; \ |
| 2563 | \ |
| 2564 | case 0x39: \ |
| 2565 | /* ORRS rd, rn, imm */ \ |
| 2566 | arm_data_proc_logic_flags(reg[rn] | imm, imm); \ |
| 2567 | break; \ |
| 2568 | \ |
| 2569 | case 0x3A: \ |
| 2570 | /* MOV rd, imm */ \ |
| 2571 | arm_data_proc(imm, imm); \ |
| 2572 | break; \ |
| 2573 | \ |
| 2574 | case 0x3B: \ |
| 2575 | /* MOVS rd, imm */ \ |
| 2576 | arm_data_proc_logic_flags(imm, imm); \ |
| 2577 | break; \ |
| 2578 | \ |
| 2579 | case 0x3C: \ |
| 2580 | /* BIC rd, rn, imm */ \ |
| 2581 | arm_data_proc(reg[rn] & (~imm), imm); \ |
| 2582 | break; \ |
| 2583 | \ |
| 2584 | case 0x3D: \ |
| 2585 | /* BICS rd, rn, imm */ \ |
| 2586 | arm_data_proc_logic_flags(reg[rn] & (~imm), imm); \ |
| 2587 | break; \ |
| 2588 | \ |
| 2589 | case 0x3E: \ |
| 2590 | /* MVN rd, imm */ \ |
| 2591 | arm_data_proc(~imm, imm); \ |
| 2592 | break; \ |
| 2593 | \ |
| 2594 | case 0x3F: \ |
| 2595 | /* MVNS rd, imm */ \ |
| 2596 | arm_data_proc_logic_flags(~imm, imm); \ |
| 2597 | break; \ |
| 2598 | \ |
| 2599 | case 0x40: \ |
| 2600 | /* STR rd, [rn], -imm */ \ |
| 2601 | arm_access_memory(store, no_op, imm, u32, yes, - offset); \ |
| 2602 | break; \ |
| 2603 | \ |
| 2604 | case 0x41: \ |
| 2605 | /* LDR rd, [rn], -imm */ \ |
| 2606 | arm_access_memory(load, no_op, imm, u32, yes, - offset); \ |
| 2607 | break; \ |
| 2608 | \ |
| 2609 | case 0x42: \ |
| 2610 | /* STRT rd, [rn], -imm */ \ |
| 2611 | arm_access_memory(store, no_op, imm, u32, yes, - offset); \ |
| 2612 | break; \ |
| 2613 | \ |
| 2614 | case 0x43: \ |
| 2615 | /* LDRT rd, [rn], -imm */ \ |
| 2616 | arm_access_memory(load, no_op, imm, u32, yes, - offset); \ |
| 2617 | break; \ |
| 2618 | \ |
| 2619 | case 0x44: \ |
| 2620 | /* STRB rd, [rn], -imm */ \ |
| 2621 | arm_access_memory(store, no_op, imm, u8, yes, - offset); \ |
| 2622 | break; \ |
| 2623 | \ |
| 2624 | case 0x45: \ |
| 2625 | /* LDRB rd, [rn], -imm */ \ |
| 2626 | arm_access_memory(load, no_op, imm, u8, yes, - offset); \ |
| 2627 | break; \ |
| 2628 | \ |
| 2629 | case 0x46: \ |
| 2630 | /* STRBT rd, [rn], -imm */ \ |
| 2631 | arm_access_memory(store, no_op, imm, u8, yes, - offset); \ |
| 2632 | break; \ |
| 2633 | \ |
| 2634 | case 0x47: \ |
| 2635 | /* LDRBT rd, [rn], -imm */ \ |
| 2636 | arm_access_memory(load, no_op, imm, u8, yes, - offset); \ |
| 2637 | break; \ |
| 2638 | \ |
| 2639 | case 0x48: \ |
| 2640 | /* STR rd, [rn], +imm */ \ |
| 2641 | arm_access_memory(store, no_op, imm, u32, yes, + offset); \ |
| 2642 | break; \ |
| 2643 | \ |
| 2644 | case 0x49: \ |
| 2645 | /* LDR rd, [rn], +imm */ \ |
| 2646 | arm_access_memory(load, no_op, imm, u32, yes, + offset); \ |
| 2647 | break; \ |
| 2648 | \ |
| 2649 | case 0x4A: \ |
| 2650 | /* STRT rd, [rn], +imm */ \ |
| 2651 | arm_access_memory(store, no_op, imm, u32, yes, + offset); \ |
| 2652 | break; \ |
| 2653 | \ |
| 2654 | case 0x4B: \ |
| 2655 | /* LDRT rd, [rn], +imm */ \ |
| 2656 | arm_access_memory(load, no_op, imm, u32, yes, + offset); \ |
| 2657 | break; \ |
| 2658 | \ |
| 2659 | case 0x4C: \ |
| 2660 | /* STRB rd, [rn], +imm */ \ |
| 2661 | arm_access_memory(store, no_op, imm, u8, yes, + offset); \ |
| 2662 | break; \ |
| 2663 | \ |
| 2664 | case 0x4D: \ |
| 2665 | /* LDRB rd, [rn], +imm */ \ |
| 2666 | arm_access_memory(load, no_op, imm, u8, yes, + offset); \ |
| 2667 | break; \ |
| 2668 | \ |
| 2669 | case 0x4E: \ |
| 2670 | /* STRBT rd, [rn], +imm */ \ |
| 2671 | arm_access_memory(store, no_op, imm, u8, yes, + offset); \ |
| 2672 | break; \ |
| 2673 | \ |
| 2674 | case 0x4F: \ |
| 2675 | /* LDRBT rd, [rn], +imm */ \ |
| 2676 | arm_access_memory(load, no_op, imm, u8, yes, + offset); \ |
| 2677 | break; \ |
| 2678 | \ |
| 2679 | case 0x50: \ |
| 2680 | /* STR rd, [rn - imm] */ \ |
| 2681 | arm_access_memory(store, - offset, imm, u32, no, no_op); \ |
| 2682 | break; \ |
| 2683 | \ |
| 2684 | case 0x51: \ |
| 2685 | /* LDR rd, [rn - imm] */ \ |
| 2686 | arm_access_memory(load, - offset, imm, u32, no, no_op); \ |
| 2687 | break; \ |
| 2688 | \ |
| 2689 | case 0x52: \ |
| 2690 | /* STR rd, [rn - imm]! */ \ |
| 2691 | arm_access_memory(store, - offset, imm, u32, yes, no_op); \ |
| 2692 | break; \ |
| 2693 | \ |
| 2694 | case 0x53: \ |
| 2695 | /* LDR rd, [rn - imm]! */ \ |
| 2696 | arm_access_memory(load, - offset, imm, u32, yes, no_op); \ |
| 2697 | break; \ |
| 2698 | \ |
| 2699 | case 0x54: \ |
| 2700 | /* STRB rd, [rn - imm] */ \ |
| 2701 | arm_access_memory(store, - offset, imm, u8, no, no_op); \ |
| 2702 | break; \ |
| 2703 | \ |
| 2704 | case 0x55: \ |
| 2705 | /* LDRB rd, [rn - imm] */ \ |
| 2706 | arm_access_memory(load, - offset, imm, u8, no, no_op); \ |
| 2707 | break; \ |
| 2708 | \ |
| 2709 | case 0x56: \ |
| 2710 | /* STRB rd, [rn - imm]! */ \ |
| 2711 | arm_access_memory(store, - offset, imm, u8, yes, no_op); \ |
| 2712 | break; \ |
| 2713 | \ |
| 2714 | case 0x57: \ |
| 2715 | /* LDRB rd, [rn - imm]! */ \ |
| 2716 | arm_access_memory(load, - offset, imm, u8, yes, no_op); \ |
| 2717 | break; \ |
| 2718 | \ |
| 2719 | case 0x58: \ |
| 2720 | /* STR rd, [rn + imm] */ \ |
| 2721 | arm_access_memory(store, + offset, imm, u32, no, no_op); \ |
| 2722 | break; \ |
| 2723 | \ |
| 2724 | case 0x59: \ |
| 2725 | /* LDR rd, [rn + imm] */ \ |
| 2726 | arm_access_memory(load, + offset, imm, u32, no, no_op); \ |
| 2727 | break; \ |
| 2728 | \ |
| 2729 | case 0x5A: \ |
| 2730 | /* STR rd, [rn + imm]! */ \ |
| 2731 | arm_access_memory(store, + offset, imm, u32, yes, no_op); \ |
| 2732 | break; \ |
| 2733 | \ |
| 2734 | case 0x5B: \ |
| 2735 | /* LDR rd, [rn + imm]! */ \ |
| 2736 | arm_access_memory(load, + offset, imm, u32, yes, no_op); \ |
| 2737 | break; \ |
| 2738 | \ |
| 2739 | case 0x5C: \ |
| 2740 | /* STRB rd, [rn + imm] */ \ |
| 2741 | arm_access_memory(store, + offset, imm, u8, no, no_op); \ |
| 2742 | break; \ |
| 2743 | \ |
| 2744 | case 0x5D: \ |
| 2745 | /* LDRB rd, [rn + imm] */ \ |
| 2746 | arm_access_memory(load, + offset, imm, u8, no, no_op); \ |
| 2747 | break; \ |
| 2748 | \ |
| 2749 | case 0x5E: \ |
| 2750 | /* STRB rd, [rn + imm]! */ \ |
| 2751 | arm_access_memory(store, + offset, imm, u8, yes, no_op); \ |
| 2752 | break; \ |
| 2753 | \ |
| 2754 | case 0x5F: \ |
| 2755 | /* LDRBT rd, [rn + imm]! */ \ |
| 2756 | arm_access_memory(load, + offset, imm, u8, yes, no_op); \ |
| 2757 | break; \ |
| 2758 | \ |
| 2759 | case 0x60: \ |
| 2760 | /* STR rd, [rn], -reg_op */ \ |
| 2761 | arm_access_memory(store, no_op, reg, u32, yes, - reg_offset); \ |
| 2762 | break; \ |
| 2763 | \ |
| 2764 | case 0x61: \ |
| 2765 | /* LDR rd, [rn], -reg_op */ \ |
| 2766 | arm_access_memory(load, no_op, reg, u32, yes, - reg_offset); \ |
| 2767 | break; \ |
| 2768 | \ |
| 2769 | case 0x62: \ |
| 2770 | /* STRT rd, [rn], -reg_op */ \ |
| 2771 | arm_access_memory(store, no_op, reg, u32, yes, - reg_offset); \ |
| 2772 | break; \ |
| 2773 | \ |
| 2774 | case 0x63: \ |
| 2775 | /* LDRT rd, [rn], -reg_op */ \ |
| 2776 | arm_access_memory(load, no_op, reg, u32, yes, - reg_offset); \ |
| 2777 | break; \ |
| 2778 | \ |
| 2779 | case 0x64: \ |
| 2780 | /* STRB rd, [rn], -reg_op */ \ |
| 2781 | arm_access_memory(store, no_op, reg, u8, yes, - reg_offset); \ |
| 2782 | break; \ |
| 2783 | \ |
| 2784 | case 0x65: \ |
| 2785 | /* LDRB rd, [rn], -reg_op */ \ |
| 2786 | arm_access_memory(load, no_op, reg, u8, yes, - reg_offset); \ |
| 2787 | break; \ |
| 2788 | \ |
| 2789 | case 0x66: \ |
| 2790 | /* STRBT rd, [rn], -reg_op */ \ |
| 2791 | arm_access_memory(store, no_op, reg, u8, yes, - reg_offset); \ |
| 2792 | break; \ |
| 2793 | \ |
| 2794 | case 0x67: \ |
| 2795 | /* LDRBT rd, [rn], -reg_op */ \ |
| 2796 | arm_access_memory(load, no_op, reg, u8, yes, - reg_offset); \ |
| 2797 | break; \ |
| 2798 | \ |
| 2799 | case 0x68: \ |
| 2800 | /* STR rd, [rn], +reg_op */ \ |
| 2801 | arm_access_memory(store, no_op, reg, u32, yes, + reg_offset); \ |
| 2802 | break; \ |
| 2803 | \ |
| 2804 | case 0x69: \ |
| 2805 | /* LDR rd, [rn], +reg_op */ \ |
| 2806 | arm_access_memory(load, no_op, reg, u32, yes, + reg_offset); \ |
| 2807 | break; \ |
| 2808 | \ |
| 2809 | case 0x6A: \ |
| 2810 | /* STRT rd, [rn], +reg_op */ \ |
| 2811 | arm_access_memory(store, no_op, reg, u32, yes, + reg_offset); \ |
| 2812 | break; \ |
| 2813 | \ |
| 2814 | case 0x6B: \ |
| 2815 | /* LDRT rd, [rn], +reg_op */ \ |
| 2816 | arm_access_memory(load, no_op, reg, u32, yes, + reg_offset); \ |
| 2817 | break; \ |
| 2818 | \ |
| 2819 | case 0x6C: \ |
| 2820 | /* STRB rd, [rn], +reg_op */ \ |
| 2821 | arm_access_memory(store, no_op, reg, u8, yes, + reg_offset); \ |
| 2822 | break; \ |
| 2823 | \ |
| 2824 | case 0x6D: \ |
| 2825 | /* LDRB rd, [rn], +reg_op */ \ |
| 2826 | arm_access_memory(load, no_op, reg, u8, yes, + reg_offset); \ |
| 2827 | break; \ |
| 2828 | \ |
| 2829 | case 0x6E: \ |
| 2830 | /* STRBT rd, [rn], +reg_op */ \ |
| 2831 | arm_access_memory(store, no_op, reg, u8, yes, + reg_offset); \ |
| 2832 | break; \ |
| 2833 | \ |
| 2834 | case 0x6F: \ |
| 2835 | /* LDRBT rd, [rn], +reg_op */ \ |
| 2836 | arm_access_memory(load, no_op, reg, u8, yes, + reg_offset); \ |
| 2837 | break; \ |
| 2838 | \ |
| 2839 | case 0x70: \ |
| 2840 | /* STR rd, [rn - reg_op] */ \ |
| 2841 | arm_access_memory(store, - reg_offset, reg, u32, no, no_op); \ |
| 2842 | break; \ |
| 2843 | \ |
| 2844 | case 0x71: \ |
| 2845 | /* LDR rd, [rn - reg_op] */ \ |
| 2846 | arm_access_memory(load, - reg_offset, reg, u32, no, no_op); \ |
| 2847 | break; \ |
| 2848 | \ |
| 2849 | case 0x72: \ |
| 2850 | /* STR rd, [rn - reg_op]! */ \ |
| 2851 | arm_access_memory(store, - reg_offset, reg, u32, yes, no_op); \ |
| 2852 | break; \ |
| 2853 | \ |
| 2854 | case 0x73: \ |
| 2855 | /* LDR rd, [rn - reg_op]! */ \ |
| 2856 | arm_access_memory(load, - reg_offset, reg, u32, yes, no_op); \ |
| 2857 | break; \ |
| 2858 | \ |
| 2859 | case 0x74: \ |
| 2860 | /* STRB rd, [rn - reg_op] */ \ |
| 2861 | arm_access_memory(store, - reg_offset, reg, u8, no, no_op); \ |
| 2862 | break; \ |
| 2863 | \ |
| 2864 | case 0x75: \ |
| 2865 | /* LDRB rd, [rn - reg_op] */ \ |
| 2866 | arm_access_memory(load, - reg_offset, reg, u8, no, no_op); \ |
| 2867 | break; \ |
| 2868 | \ |
| 2869 | case 0x76: \ |
| 2870 | /* STRB rd, [rn - reg_op]! */ \ |
| 2871 | arm_access_memory(store, - reg_offset, reg, u8, yes, no_op); \ |
| 2872 | break; \ |
| 2873 | \ |
| 2874 | case 0x77: \ |
| 2875 | /* LDRB rd, [rn - reg_op]! */ \ |
| 2876 | arm_access_memory(load, - reg_offset, reg, u8, yes, no_op); \ |
| 2877 | break; \ |
| 2878 | \ |
| 2879 | case 0x78: \ |
| 2880 | /* STR rd, [rn + reg_op] */ \ |
| 2881 | arm_access_memory(store, + reg_offset, reg, u32, no, no_op); \ |
| 2882 | break; \ |
| 2883 | \ |
| 2884 | case 0x79: \ |
| 2885 | /* LDR rd, [rn + reg_op] */ \ |
| 2886 | arm_access_memory(load, + reg_offset, reg, u32, no, no_op); \ |
| 2887 | break; \ |
| 2888 | \ |
| 2889 | case 0x7A: \ |
| 2890 | /* STR rd, [rn + reg_op]! */ \ |
| 2891 | arm_access_memory(store, + reg_offset, reg, u32, yes, no_op); \ |
| 2892 | break; \ |
| 2893 | \ |
| 2894 | case 0x7B: \ |
| 2895 | /* LDR rd, [rn + reg_op]! */ \ |
| 2896 | arm_access_memory(load, + reg_offset, reg, u32, yes, no_op); \ |
| 2897 | break; \ |
| 2898 | \ |
| 2899 | case 0x7C: \ |
| 2900 | /* STRB rd, [rn + reg_op] */ \ |
| 2901 | arm_access_memory(store, + reg_offset, reg, u8, no, no_op); \ |
| 2902 | break; \ |
| 2903 | \ |
| 2904 | case 0x7D: \ |
| 2905 | /* LDRB rd, [rn + reg_op] */ \ |
| 2906 | arm_access_memory(load, + reg_offset, reg, u8, no, no_op); \ |
| 2907 | break; \ |
| 2908 | \ |
| 2909 | case 0x7E: \ |
| 2910 | /* STRB rd, [rn + reg_op]! */ \ |
| 2911 | arm_access_memory(store, + reg_offset, reg, u8, yes, no_op); \ |
| 2912 | break; \ |
| 2913 | \ |
| 2914 | case 0x7F: \ |
| 2915 | /* LDRBT rd, [rn + reg_op]! */ \ |
| 2916 | arm_access_memory(load, + reg_offset, reg, u8, yes, no_op); \ |
| 2917 | break; \ |
| 2918 | \ |
| 2919 | case 0x80: \ |
| 2920 | /* STMDA rn, rlist */ \ |
| 2921 | arm_block_memory(store, down_a, no, no); \ |
| 2922 | break; \ |
| 2923 | \ |
| 2924 | case 0x81: \ |
| 2925 | /* LDMDA rn, rlist */ \ |
| 2926 | arm_block_memory(load, down_a, no, no); \ |
| 2927 | break; \ |
| 2928 | \ |
| 2929 | case 0x82: \ |
| 2930 | /* STMDA rn!, rlist */ \ |
| 2931 | arm_block_memory(store, down_a, down, no); \ |
| 2932 | break; \ |
| 2933 | \ |
| 2934 | case 0x83: \ |
| 2935 | /* LDMDA rn!, rlist */ \ |
| 2936 | arm_block_memory(load, down_a, down, no); \ |
| 2937 | break; \ |
| 2938 | \ |
| 2939 | case 0x84: \ |
| 2940 | /* STMDA rn, rlist^ */ \ |
| 2941 | arm_block_memory(store, down_a, no, yes); \ |
| 2942 | break; \ |
| 2943 | \ |
| 2944 | case 0x85: \ |
| 2945 | /* LDMDA rn, rlist^ */ \ |
| 2946 | arm_block_memory(load, down_a, no, yes); \ |
| 2947 | break; \ |
| 2948 | \ |
| 2949 | case 0x86: \ |
| 2950 | /* STMDA rn!, rlist^ */ \ |
| 2951 | arm_block_memory(store, down_a, down, yes); \ |
| 2952 | break; \ |
| 2953 | \ |
| 2954 | case 0x87: \ |
| 2955 | /* LDMDA rn!, rlist^ */ \ |
| 2956 | arm_block_memory(load, down_a, down, yes); \ |
| 2957 | break; \ |
| 2958 | \ |
| 2959 | case 0x88: \ |
| 2960 | /* STMIA rn, rlist */ \ |
| 2961 | arm_block_memory(store, no, no, no); \ |
| 2962 | break; \ |
| 2963 | \ |
| 2964 | case 0x89: \ |
| 2965 | /* LDMIA rn, rlist */ \ |
| 2966 | arm_block_memory(load, no, no, no); \ |
| 2967 | break; \ |
| 2968 | \ |
| 2969 | case 0x8A: \ |
| 2970 | /* STMIA rn!, rlist */ \ |
| 2971 | arm_block_memory(store, no, up, no); \ |
| 2972 | break; \ |
| 2973 | \ |
| 2974 | case 0x8B: \ |
| 2975 | /* LDMIA rn!, rlist */ \ |
| 2976 | arm_block_memory(load, no, up, no); \ |
| 2977 | break; \ |
| 2978 | \ |
| 2979 | case 0x8C: \ |
| 2980 | /* STMIA rn, rlist^ */ \ |
| 2981 | arm_block_memory(store, no, no, yes); \ |
| 2982 | break; \ |
| 2983 | \ |
| 2984 | case 0x8D: \ |
| 2985 | /* LDMIA rn, rlist^ */ \ |
| 2986 | arm_block_memory(load, no, no, yes); \ |
| 2987 | break; \ |
| 2988 | \ |
| 2989 | case 0x8E: \ |
| 2990 | /* STMIA rn!, rlist^ */ \ |
| 2991 | arm_block_memory(store, no, up, yes); \ |
| 2992 | break; \ |
| 2993 | \ |
| 2994 | case 0x8F: \ |
| 2995 | /* LDMIA rn!, rlist^ */ \ |
| 2996 | arm_block_memory(load, no, up, yes); \ |
| 2997 | break; \ |
| 2998 | \ |
| 2999 | case 0x90: \ |
| 3000 | /* STMDB rn, rlist */ \ |
| 3001 | arm_block_memory(store, down_b, no, no); \ |
| 3002 | break; \ |
| 3003 | \ |
| 3004 | case 0x91: \ |
| 3005 | /* LDMDB rn, rlist */ \ |
| 3006 | arm_block_memory(load, down_b, no, no); \ |
| 3007 | break; \ |
| 3008 | \ |
| 3009 | case 0x92: \ |
| 3010 | /* STMDB rn!, rlist */ \ |
| 3011 | arm_block_memory(store, down_b, down, no); \ |
| 3012 | break; \ |
| 3013 | \ |
| 3014 | case 0x93: \ |
| 3015 | /* LDMDB rn!, rlist */ \ |
| 3016 | arm_block_memory(load, down_b, down, no); \ |
| 3017 | break; \ |
| 3018 | \ |
| 3019 | case 0x94: \ |
| 3020 | /* STMDB rn, rlist^ */ \ |
| 3021 | arm_block_memory(store, down_b, no, yes); \ |
| 3022 | break; \ |
| 3023 | \ |
| 3024 | case 0x95: \ |
| 3025 | /* LDMDB rn, rlist^ */ \ |
| 3026 | arm_block_memory(load, down_b, no, yes); \ |
| 3027 | break; \ |
| 3028 | \ |
| 3029 | case 0x96: \ |
| 3030 | /* STMDB rn!, rlist^ */ \ |
| 3031 | arm_block_memory(store, down_b, down, yes); \ |
| 3032 | break; \ |
| 3033 | \ |
| 3034 | case 0x97: \ |
| 3035 | /* LDMDB rn!, rlist^ */ \ |
| 3036 | arm_block_memory(load, down_b, down, yes); \ |
| 3037 | break; \ |
| 3038 | \ |
| 3039 | case 0x98: \ |
| 3040 | /* STMIB rn, rlist */ \ |
| 3041 | arm_block_memory(store, up, no, no); \ |
| 3042 | break; \ |
| 3043 | \ |
| 3044 | case 0x99: \ |
| 3045 | /* LDMIB rn, rlist */ \ |
| 3046 | arm_block_memory(load, up, no, no); \ |
| 3047 | break; \ |
| 3048 | \ |
| 3049 | case 0x9A: \ |
| 3050 | /* STMIB rn!, rlist */ \ |
| 3051 | arm_block_memory(store, up, up, no); \ |
| 3052 | break; \ |
| 3053 | \ |
| 3054 | case 0x9B: \ |
| 3055 | /* LDMIB rn!, rlist */ \ |
| 3056 | arm_block_memory(load, up, up, no); \ |
| 3057 | break; \ |
| 3058 | \ |
| 3059 | case 0x9C: \ |
| 3060 | /* STMIB rn, rlist^ */ \ |
| 3061 | arm_block_memory(store, up, no, yes); \ |
| 3062 | break; \ |
| 3063 | \ |
| 3064 | case 0x9D: \ |
| 3065 | /* LDMIB rn, rlist^ */ \ |
| 3066 | arm_block_memory(load, up, no, yes); \ |
| 3067 | break; \ |
| 3068 | \ |
| 3069 | case 0x9E: \ |
| 3070 | /* STMIB rn!, rlist^ */ \ |
| 3071 | arm_block_memory(store, up, up, yes); \ |
| 3072 | break; \ |
| 3073 | \ |
| 3074 | case 0x9F: \ |
| 3075 | /* LDMIB rn!, rlist^ */ \ |
| 3076 | arm_block_memory(load, up, up, yes); \ |
| 3077 | break; \ |
| 3078 | \ |
| 3079 | case 0xA0: \ |
| 3080 | case 0xA1: \ |
| 3081 | case 0xA2: \ |
| 3082 | case 0xA3: \ |
| 3083 | case 0xA4: \ |
| 3084 | case 0xA5: \ |
| 3085 | case 0xA6: \ |
| 3086 | case 0xA7: \ |
| 3087 | case 0xA8: \ |
| 3088 | case 0xA9: \ |
| 3089 | case 0xAA: \ |
| 3090 | case 0xAB: \ |
| 3091 | case 0xAC: \ |
| 3092 | case 0xAD: \ |
| 3093 | case 0xAE: \ |
| 3094 | case 0xAF: \ |
| 3095 | { \ |
| 3096 | /* B offset */ \ |
| 3097 | arm_decode_branch(); \ |
| 3098 | arm_pc_offset_update(offset + 8); \ |
| 3099 | break; \ |
| 3100 | } \ |
| 3101 | \ |
| 3102 | case 0xB0 ... 0xBF: \ |
| 3103 | { \ |
| 3104 | /* BL offset */ \ |
| 3105 | arm_decode_branch(); \ |
| 3106 | reg[REG_LR] = pc + 4; \ |
| 3107 | arm_pc_offset_update(offset + 8); \ |
| 3108 | break; \ |
| 3109 | } \ |
| 3110 | \ |
| 3111 | case 0xC0 ... 0xEF: \ |
| 3112 | /* coprocessor instructions, reserved on GBA */ \ |
| 3113 | break; \ |
| 3114 | \ |
| 3115 | case 0xF0 ... 0xFF: \ |
| 3116 | { \ |
| 3117 | /* SWI comment */ \ |
| 3118 | u32 swi_comment = opcode & 0x00FFFFFF; \ |
| 3119 | \ |
| 3120 | switch(swi_comment >> 16) \ |
| 3121 | { \ |
| 3122 | /* Jump to BIOS SWI handler */ \ |
| 3123 | default: \ |
| 3124 | reg_mode[MODE_SUPERVISOR][6] = pc + 4; \ |
| 3125 | collapse_flags(); \ |
| 3126 | spsr[MODE_SUPERVISOR] = reg[REG_CPSR]; \ |
| 3127 | reg[REG_PC] = 0x00000008; \ |
| 3128 | arm_update_pc(); \ |
| 3129 | reg[REG_CPSR] = (reg[REG_CPSR] & ~0x1F) | 0x13; \ |
| 3130 | set_cpu_mode(MODE_SUPERVISOR); \ |
| 3131 | break; \ |
| 3132 | } \ |
| 3133 | break; \ |
| 3134 | } \ |
| 3135 | } \ |
| 3136 | \ |
| 3137 | skip_instruction: \ |
| 3138 | |
| 3139 | #define execute_thumb_instruction() \ |
| 3140 | using_instruction(thumb); \ |
| 3141 | check_pc_region(); \ |
| 3142 | pc &= ~0x01; \ |
| 3143 | opcode = address16(pc_address_block, (pc & 0x7FFF)); \ |
| 3144 | \ |
| 3145 | switch((opcode >> 8) & 0xFF) \ |
| 3146 | { \ |
| 3147 | case 0x00 ... 0x07: \ |
| 3148 | /* LSL rd, rs, offset */ \ |
| 3149 | thumb_shift(shift, lsl, imm); \ |
| 3150 | break; \ |
| 3151 | \ |
| 3152 | case 0x08 ... 0x0F: \ |
| 3153 | /* LSR rd, rs, offset */ \ |
| 3154 | thumb_shift(shift, lsr, imm); \ |
| 3155 | break; \ |
| 3156 | \ |
| 3157 | case 0x10 ... 0x17: \ |
| 3158 | /* ASR rd, rs, offset */ \ |
| 3159 | thumb_shift(shift, asr, imm); \ |
| 3160 | break; \ |
| 3161 | \ |
| 3162 | case 0x18 ... 0x19: \ |
| 3163 | /* ADD rd, rs, rn */ \ |
| 3164 | thumb_add(add_sub, rd, reg[rs], reg[rn]); \ |
| 3165 | break; \ |
| 3166 | \ |
| 3167 | case 0x1A ... 0x1B: \ |
| 3168 | /* SUB rd, rs, rn */ \ |
| 3169 | thumb_sub(add_sub, rd, reg[rs], reg[rn]); \ |
| 3170 | break; \ |
| 3171 | \ |
| 3172 | case 0x1C ... 0x1D: \ |
| 3173 | /* ADD rd, rs, imm */ \ |
| 3174 | thumb_add(add_sub_imm, rd, reg[rs], imm); \ |
| 3175 | break; \ |
| 3176 | \ |
| 3177 | case 0x1E ... 0x1F: \ |
| 3178 | /* SUB rd, rs, imm */ \ |
| 3179 | thumb_sub(add_sub_imm, rd, reg[rs], imm); \ |
| 3180 | break; \ |
| 3181 | \ |
| 3182 | case 0x20: \ |
| 3183 | /* MOV r0, imm */ \ |
| 3184 | thumb_logic(imm, 0, imm); \ |
| 3185 | break; \ |
| 3186 | \ |
| 3187 | case 0x21: \ |
| 3188 | /* MOV r1, imm */ \ |
| 3189 | thumb_logic(imm, 1, imm); \ |
| 3190 | break; \ |
| 3191 | \ |
| 3192 | case 0x22: \ |
| 3193 | /* MOV r2, imm */ \ |
| 3194 | thumb_logic(imm, 2, imm); \ |
| 3195 | break; \ |
| 3196 | \ |
| 3197 | case 0x23: \ |
| 3198 | /* MOV r3, imm */ \ |
| 3199 | thumb_logic(imm, 3, imm); \ |
| 3200 | break; \ |
| 3201 | \ |
| 3202 | case 0x24: \ |
| 3203 | /* MOV r4, imm */ \ |
| 3204 | thumb_logic(imm, 4, imm); \ |
| 3205 | break; \ |
| 3206 | \ |
| 3207 | case 0x25: \ |
| 3208 | /* MOV r5, imm */ \ |
| 3209 | thumb_logic(imm, 5, imm); \ |
| 3210 | break; \ |
| 3211 | \ |
| 3212 | case 0x26: \ |
| 3213 | /* MOV r6, imm */ \ |
| 3214 | thumb_logic(imm, 6, imm); \ |
| 3215 | break; \ |
| 3216 | \ |
| 3217 | case 0x27: \ |
| 3218 | /* MOV r7, imm */ \ |
| 3219 | thumb_logic(imm, 7, imm); \ |
| 3220 | break; \ |
| 3221 | \ |
| 3222 | case 0x28: \ |
| 3223 | /* CMP r0, imm */ \ |
| 3224 | thumb_test_sub(imm, reg[0], imm); \ |
| 3225 | break; \ |
| 3226 | \ |
| 3227 | case 0x29: \ |
| 3228 | /* CMP r1, imm */ \ |
| 3229 | thumb_test_sub(imm, reg[1], imm); \ |
| 3230 | break; \ |
| 3231 | \ |
| 3232 | case 0x2A: \ |
| 3233 | /* CMP r2, imm */ \ |
| 3234 | thumb_test_sub(imm, reg[2], imm); \ |
| 3235 | break; \ |
| 3236 | \ |
| 3237 | case 0x2B: \ |
| 3238 | /* CMP r3, imm */ \ |
| 3239 | thumb_test_sub(imm, reg[3], imm); \ |
| 3240 | break; \ |
| 3241 | \ |
| 3242 | case 0x2C: \ |
| 3243 | /* CMP r4, imm */ \ |
| 3244 | thumb_test_sub(imm, reg[4], imm); \ |
| 3245 | break; \ |
| 3246 | \ |
| 3247 | case 0x2D: \ |
| 3248 | /* CMP r5, imm */ \ |
| 3249 | thumb_test_sub(imm, reg[5], imm); \ |
| 3250 | break; \ |
| 3251 | \ |
| 3252 | case 0x2E: \ |
| 3253 | /* CMP r6, imm */ \ |
| 3254 | thumb_test_sub(imm, reg[6], imm); \ |
| 3255 | break; \ |
| 3256 | \ |
| 3257 | case 0x2F: \ |
| 3258 | /* CMP r7, imm */ \ |
| 3259 | thumb_test_sub(imm, reg[7], imm); \ |
| 3260 | break; \ |
| 3261 | \ |
| 3262 | case 0x30: \ |
| 3263 | /* ADD r0, imm */ \ |
| 3264 | thumb_add(imm, 0, reg[0], imm); \ |
| 3265 | break; \ |
| 3266 | \ |
| 3267 | case 0x31: \ |
| 3268 | /* ADD r1, imm */ \ |
| 3269 | thumb_add(imm, 1, reg[1], imm); \ |
| 3270 | break; \ |
| 3271 | \ |
| 3272 | case 0x32: \ |
| 3273 | /* ADD r2, imm */ \ |
| 3274 | thumb_add(imm, 2, reg[2], imm); \ |
| 3275 | break; \ |
| 3276 | \ |
| 3277 | case 0x33: \ |
| 3278 | /* ADD r3, imm */ \ |
| 3279 | thumb_add(imm, 3, reg[3], imm); \ |
| 3280 | break; \ |
| 3281 | \ |
| 3282 | case 0x34: \ |
| 3283 | /* ADD r4, imm */ \ |
| 3284 | thumb_add(imm, 4, reg[4], imm); \ |
| 3285 | break; \ |
| 3286 | \ |
| 3287 | case 0x35: \ |
| 3288 | /* ADD r5, imm */ \ |
| 3289 | thumb_add(imm, 5, reg[5], imm); \ |
| 3290 | break; \ |
| 3291 | \ |
| 3292 | case 0x36: \ |
| 3293 | /* ADD r6, imm */ \ |
| 3294 | thumb_add(imm, 6, reg[6], imm); \ |
| 3295 | break; \ |
| 3296 | \ |
| 3297 | case 0x37: \ |
| 3298 | /* ADD r7, imm */ \ |
| 3299 | thumb_add(imm, 7, reg[7], imm); \ |
| 3300 | break; \ |
| 3301 | \ |
| 3302 | case 0x38: \ |
| 3303 | /* SUB r0, imm */ \ |
| 3304 | thumb_sub(imm, 0, reg[0], imm); \ |
| 3305 | break; \ |
| 3306 | \ |
| 3307 | case 0x39: \ |
| 3308 | /* SUB r1, imm */ \ |
| 3309 | thumb_sub(imm, 1, reg[1], imm); \ |
| 3310 | break; \ |
| 3311 | \ |
| 3312 | case 0x3A: \ |
| 3313 | /* SUB r2, imm */ \ |
| 3314 | thumb_sub(imm, 2, reg[2], imm); \ |
| 3315 | break; \ |
| 3316 | \ |
| 3317 | case 0x3B: \ |
| 3318 | /* SUB r3, imm */ \ |
| 3319 | thumb_sub(imm, 3, reg[3], imm); \ |
| 3320 | break; \ |
| 3321 | \ |
| 3322 | case 0x3C: \ |
| 3323 | /* SUB r4, imm */ \ |
| 3324 | thumb_sub(imm, 4, reg[4], imm); \ |
| 3325 | break; \ |
| 3326 | \ |
| 3327 | case 0x3D: \ |
| 3328 | /* SUB r5, imm */ \ |
| 3329 | thumb_sub(imm, 5, reg[5], imm); \ |
| 3330 | break; \ |
| 3331 | \ |
| 3332 | case 0x3E: \ |
| 3333 | /* SUB r6, imm */ \ |
| 3334 | thumb_sub(imm, 6, reg[6], imm); \ |
| 3335 | break; \ |
| 3336 | \ |
| 3337 | case 0x3F: \ |
| 3338 | /* SUB r7, imm */ \ |
| 3339 | thumb_sub(imm, 7, reg[7], imm); \ |
| 3340 | break; \ |
| 3341 | \ |
| 3342 | case 0x40: \ |
| 3343 | switch((opcode >> 6) & 0x03) \ |
| 3344 | { \ |
| 3345 | case 0x00: \ |
| 3346 | /* AND rd, rs */ \ |
| 3347 | thumb_logic(alu_op, rd, reg[rd] & reg[rs]); \ |
| 3348 | break; \ |
| 3349 | \ |
| 3350 | case 0x01: \ |
| 3351 | /* EOR rd, rs */ \ |
| 3352 | thumb_logic(alu_op, rd, reg[rd] ^ reg[rs]); \ |
| 3353 | break; \ |
| 3354 | \ |
| 3355 | case 0x02: \ |
| 3356 | /* LSL rd, rs */ \ |
| 3357 | thumb_shift(alu_op, lsl, reg); \ |
| 3358 | break; \ |
| 3359 | \ |
| 3360 | case 0x03: \ |
| 3361 | /* LSR rd, rs */ \ |
| 3362 | thumb_shift(alu_op, lsr, reg); \ |
| 3363 | break; \ |
| 3364 | } \ |
| 3365 | break; \ |
| 3366 | \ |
| 3367 | case 0x41: \ |
| 3368 | switch((opcode >> 6) & 0x03) \ |
| 3369 | { \ |
| 3370 | case 0x00: \ |
| 3371 | /* ASR rd, rs */ \ |
| 3372 | thumb_shift(alu_op, asr, reg); \ |
| 3373 | break; \ |
| 3374 | \ |
| 3375 | case 0x01: \ |
| 3376 | /* ADC rd, rs */ \ |
| 3377 | thumb_add(alu_op, rd, reg[rd] + reg[rs], c_flag); \ |
| 3378 | break; \ |
| 3379 | \ |
| 3380 | case 0x02: \ |
| 3381 | /* SBC rd, rs */ \ |
| 3382 | thumb_sub(alu_op, rd, reg[rd] - reg[rs], (c_flag ^ 1)); \ |
| 3383 | break; \ |
| 3384 | \ |
| 3385 | case 0x03: \ |
| 3386 | /* ROR rd, rs */ \ |
| 3387 | thumb_shift(alu_op, ror, reg); \ |
| 3388 | break; \ |
| 3389 | } \ |
| 3390 | break; \ |
| 3391 | \ |
| 3392 | case 0x42: \ |
| 3393 | switch((opcode >> 6) & 0x03) \ |
| 3394 | { \ |
| 3395 | case 0x00: \ |
| 3396 | /* TST rd, rs */ \ |
| 3397 | thumb_test_logic(alu_op, reg[rd] & reg[rs]); \ |
| 3398 | break; \ |
| 3399 | \ |
| 3400 | case 0x01: \ |
| 3401 | /* NEG rd, rs */ \ |
| 3402 | thumb_sub(alu_op, rd, 0, reg[rs]); \ |
| 3403 | break; \ |
| 3404 | \ |
| 3405 | case 0x02: \ |
| 3406 | /* CMP rd, rs */ \ |
| 3407 | thumb_test_sub(alu_op, reg[rd], reg[rs]); \ |
| 3408 | break; \ |
| 3409 | \ |
| 3410 | case 0x03: \ |
| 3411 | /* CMN rd, rs */ \ |
| 3412 | thumb_test_add(alu_op, reg[rd], reg[rs]); \ |
| 3413 | break; \ |
| 3414 | } \ |
| 3415 | break; \ |
| 3416 | \ |
| 3417 | case 0x43: \ |
| 3418 | switch((opcode >> 6) & 0x03) \ |
| 3419 | { \ |
| 3420 | case 0x00: \ |
| 3421 | /* ORR rd, rs */ \ |
| 3422 | thumb_logic(alu_op, rd, reg[rd] | reg[rs]); \ |
| 3423 | break; \ |
| 3424 | \ |
| 3425 | case 0x01: \ |
| 3426 | /* MUL rd, rs */ \ |
| 3427 | thumb_logic(alu_op, rd, reg[rd] * reg[rs]); \ |
| 3428 | break; \ |
| 3429 | \ |
| 3430 | case 0x02: \ |
| 3431 | /* BIC rd, rs */ \ |
| 3432 | thumb_logic(alu_op, rd, reg[rd] & (~reg[rs])); \ |
| 3433 | break; \ |
| 3434 | \ |
| 3435 | case 0x03: \ |
| 3436 | /* MVN rd, rs */ \ |
| 3437 | thumb_logic(alu_op, rd, ~reg[rs]); \ |
| 3438 | break; \ |
| 3439 | } \ |
| 3440 | break; \ |
| 3441 | \ |
| 3442 | case 0x44: \ |
| 3443 | /* ADD rd, rs */ \ |
| 3444 | thumb_hireg_op(reg[rd] + reg[rs]); \ |
| 3445 | break; \ |
| 3446 | \ |
| 3447 | case 0x45: \ |
| 3448 | /* CMP rd, rs */ \ |
| 3449 | { \ |
| 3450 | thumb_pc_offset(4); \ |
| 3451 | thumb_decode_hireg_op(); \ |
| 3452 | u32 _sa = reg[rd]; \ |
| 3453 | u32 _sb = reg[rs]; \ |
| 3454 | u32 dest = _sa - _sb; \ |
| 3455 | thumb_pc_offset(-2); \ |
| 3456 | calculate_flags_sub(dest, _sa, _sb); \ |
| 3457 | } \ |
| 3458 | break; \ |
| 3459 | \ |
| 3460 | case 0x46: \ |
| 3461 | /* MOV rd, rs */ \ |
| 3462 | thumb_hireg_op(reg[rs]); \ |
| 3463 | break; \ |
| 3464 | \ |
| 3465 | case 0x47: \ |
| 3466 | /* BX rs */ \ |
| 3467 | { \ |
| 3468 | thumb_decode_hireg_op(); \ |
| 3469 | u32 src; \ |
| 3470 | thumb_pc_offset(4); \ |
| 3471 | src = reg[rs]; \ |
| 3472 | if(src & 0x01) \ |
| 3473 | { \ |
| 3474 | src -= 1; \ |
| 3475 | thumb_pc_offset_update_direct(src); \ |
| 3476 | } \ |
| 3477 | else \ |
| 3478 | { \ |
| 3479 | /* Switch to ARM mode */ \ |
| 3480 | thumb_pc_offset_update_direct(src); \ |
| 3481 | reg[REG_CPSR] &= ~0x20; \ |
| 3482 | collapse_flags(); \ |
| 3483 | goto arm_loop; \ |
| 3484 | } \ |
| 3485 | } \ |
| 3486 | break; \ |
| 3487 | \ |
| 3488 | case 0x48: \ |
| 3489 | /* LDR r0, [pc + imm] */ \ |
| 3490 | thumb_access_memory(load, imm, (pc & ~2) + (imm * 4) + 4, reg[0], u32); \ |
| 3491 | break; \ |
| 3492 | \ |
| 3493 | case 0x49: \ |
| 3494 | /* LDR r1, [pc + imm] */ \ |
| 3495 | thumb_access_memory(load, imm, (pc & ~2) + (imm * 4) + 4, reg[1], u32); \ |
| 3496 | break; \ |
| 3497 | \ |
| 3498 | case 0x4A: \ |
| 3499 | /* LDR r2, [pc + imm] */ \ |
| 3500 | thumb_access_memory(load, imm, (pc & ~2) + (imm * 4) + 4, reg[2], u32); \ |
| 3501 | break; \ |
| 3502 | \ |
| 3503 | case 0x4B: \ |
| 3504 | /* LDR r3, [pc + imm] */ \ |
| 3505 | thumb_access_memory(load, imm, (pc & ~2) + (imm * 4) + 4, reg[3], u32); \ |
| 3506 | break; \ |
| 3507 | \ |
| 3508 | case 0x4C: \ |
| 3509 | /* LDR r4, [pc + imm] */ \ |
| 3510 | thumb_access_memory(load, imm, (pc & ~2) + (imm * 4) + 4, reg[4], u32); \ |
| 3511 | break; \ |
| 3512 | \ |
| 3513 | case 0x4D: \ |
| 3514 | /* LDR r5, [pc + imm] */ \ |
| 3515 | thumb_access_memory(load, imm, (pc & ~2) + (imm * 4) + 4, reg[5], u32); \ |
| 3516 | break; \ |
| 3517 | \ |
| 3518 | case 0x4E: \ |
| 3519 | /* LDR r6, [pc + imm] */ \ |
| 3520 | thumb_access_memory(load, imm, (pc & ~2) + (imm * 4) + 4, reg[6], u32); \ |
| 3521 | break; \ |
| 3522 | \ |
| 3523 | case 0x4F: \ |
| 3524 | /* LDR r7, [pc + imm] */ \ |
| 3525 | thumb_access_memory(load, imm, (pc & ~2) + (imm * 4) + 4, reg[7], u32); \ |
| 3526 | break; \ |
| 3527 | \ |
| 3528 | case 0x50 ... 0x51: \ |
| 3529 | /* STR rd, [rb + ro] */ \ |
| 3530 | thumb_access_memory(store, mem_reg, reg[rb] + reg[ro], reg[rd], u32); \ |
| 3531 | break; \ |
| 3532 | \ |
| 3533 | case 0x52 ... 0x53: \ |
| 3534 | /* STRH rd, [rb + ro] */ \ |
| 3535 | thumb_access_memory(store, mem_reg, reg[rb] + reg[ro], reg[rd], u16); \ |
| 3536 | break; \ |
| 3537 | \ |
| 3538 | case 0x54 ... 0x55: \ |
| 3539 | /* STRB rd, [rb + ro] */ \ |
| 3540 | thumb_access_memory(store, mem_reg, reg[rb] + reg[ro], reg[rd], u8); \ |
| 3541 | break; \ |
| 3542 | \ |
| 3543 | case 0x56 ... 0x57: \ |
| 3544 | /* LDSB rd, [rb + ro] */ \ |
| 3545 | thumb_access_memory(load, mem_reg, reg[rb] + reg[ro], reg[rd], s8); \ |
| 3546 | break; \ |
| 3547 | \ |
| 3548 | case 0x58 ... 0x59: \ |
| 3549 | /* LDR rd, [rb + ro] */ \ |
| 3550 | thumb_access_memory(load, mem_reg, reg[rb] + reg[ro], reg[rd], u32); \ |
| 3551 | break; \ |
| 3552 | \ |
| 3553 | case 0x5A ... 0x5B: \ |
| 3554 | /* LDRH rd, [rb + ro] */ \ |
| 3555 | thumb_access_memory(load, mem_reg, reg[rb] + reg[ro], reg[rd], u16); \ |
| 3556 | break; \ |
| 3557 | \ |
| 3558 | case 0x5C ... 0x5D: \ |
| 3559 | /* LDRB rd, [rb + ro] */ \ |
| 3560 | thumb_access_memory(load, mem_reg, reg[rb] + reg[ro], reg[rd], u8); \ |
| 3561 | break; \ |
| 3562 | \ |
| 3563 | case 0x5E ... 0x5F: \ |
| 3564 | /* LDSH rd, [rb + ro] */ \ |
| 3565 | thumb_access_memory(load, mem_reg, reg[rb] + reg[ro], reg[rd], s16); \ |
| 3566 | break; \ |
| 3567 | \ |
| 3568 | case 0x60 ... 0x67: \ |
| 3569 | /* STR rd, [rb + imm] */ \ |
| 3570 | thumb_access_memory(store, mem_imm, reg[rb] + (imm * 4), reg[rd], u32); \ |
| 3571 | break; \ |
| 3572 | \ |
| 3573 | case 0x68 ... 0x6F: \ |
| 3574 | /* LDR rd, [rb + imm] */ \ |
| 3575 | thumb_access_memory(load, mem_imm, reg[rb] + (imm * 4), reg[rd], u32); \ |
| 3576 | break; \ |
| 3577 | \ |
| 3578 | case 0x70 ... 0x77: \ |
| 3579 | /* STRB rd, [rb + imm] */ \ |
| 3580 | thumb_access_memory(store, mem_imm, reg[rb] + imm, reg[rd], u8); \ |
| 3581 | break; \ |
| 3582 | \ |
| 3583 | case 0x78 ... 0x7F: \ |
| 3584 | /* LDRB rd, [rb + imm] */ \ |
| 3585 | thumb_access_memory(load, mem_imm, reg[rb] + imm, reg[rd], u8); \ |
| 3586 | break; \ |
| 3587 | \ |
| 3588 | case 0x80 ... 0x87: \ |
| 3589 | /* STRH rd, [rb + imm] */ \ |
| 3590 | thumb_access_memory(store, mem_imm, reg[rb] + (imm * 2), reg[rd], u16); \ |
| 3591 | break; \ |
| 3592 | \ |
| 3593 | case 0x88 ... 0x8F: \ |
| 3594 | /* LDRH rd, [rb + imm] */ \ |
| 3595 | thumb_access_memory(load, mem_imm, reg[rb] + (imm * 2), reg[rd], u16); \ |
| 3596 | break; \ |
| 3597 | \ |
| 3598 | case 0x90: \ |
| 3599 | /* STR r0, [sp + imm] */ \ |
| 3600 | thumb_access_memory(store, imm, reg[REG_SP] + (imm * 4), reg[0], u32); \ |
| 3601 | break; \ |
| 3602 | \ |
| 3603 | case 0x91: \ |
| 3604 | /* STR r1, [sp + imm] */ \ |
| 3605 | thumb_access_memory(store, imm, reg[REG_SP] + (imm * 4), reg[1], u32); \ |
| 3606 | break; \ |
| 3607 | \ |
| 3608 | case 0x92: \ |
| 3609 | /* STR r2, [sp + imm] */ \ |
| 3610 | thumb_access_memory(store, imm, reg[REG_SP] + (imm * 4), reg[2], u32); \ |
| 3611 | break; \ |
| 3612 | \ |
| 3613 | case 0x93: \ |
| 3614 | /* STR r3, [sp + imm] */ \ |
| 3615 | thumb_access_memory(store, imm, reg[REG_SP] + (imm * 4), reg[3], u32); \ |
| 3616 | break; \ |
| 3617 | \ |
| 3618 | case 0x94: \ |
| 3619 | /* STR r4, [sp + imm] */ \ |
| 3620 | thumb_access_memory(store, imm, reg[REG_SP] + (imm * 4), reg[4], u32); \ |
| 3621 | break; \ |
| 3622 | \ |
| 3623 | case 0x95: \ |
| 3624 | /* STR r5, [sp + imm] */ \ |
| 3625 | thumb_access_memory(store, imm, reg[REG_SP] + (imm * 4), reg[5], u32); \ |
| 3626 | break; \ |
| 3627 | \ |
| 3628 | case 0x96: \ |
| 3629 | /* STR r6, [sp + imm] */ \ |
| 3630 | thumb_access_memory(store, imm, reg[REG_SP] + (imm * 4), reg[6], u32); \ |
| 3631 | break; \ |
| 3632 | \ |
| 3633 | case 0x97: \ |
| 3634 | /* STR r7, [sp + imm] */ \ |
| 3635 | thumb_access_memory(store, imm, reg[REG_SP] + (imm * 4), reg[7], u32); \ |
| 3636 | break; \ |
| 3637 | \ |
| 3638 | case 0x98: \ |
| 3639 | /* LDR r0, [sp + imm] */ \ |
| 3640 | thumb_access_memory(load, imm, reg[REG_SP] + (imm * 4), reg[0], u32); \ |
| 3641 | break; \ |
| 3642 | \ |
| 3643 | case 0x99: \ |
| 3644 | /* LDR r1, [sp + imm] */ \ |
| 3645 | thumb_access_memory(load, imm, reg[REG_SP] + (imm * 4), reg[1], u32); \ |
| 3646 | break; \ |
| 3647 | \ |
| 3648 | case 0x9A: \ |
| 3649 | /* LDR r2, [sp + imm] */ \ |
| 3650 | thumb_access_memory(load, imm, reg[REG_SP] + (imm * 4), reg[2], u32); \ |
| 3651 | break; \ |
| 3652 | \ |
| 3653 | case 0x9B: \ |
| 3654 | /* LDR r3, [sp + imm] */ \ |
| 3655 | thumb_access_memory(load, imm, reg[REG_SP] + (imm * 4), reg[3], u32); \ |
| 3656 | break; \ |
| 3657 | \ |
| 3658 | case 0x9C: \ |
| 3659 | /* LDR r4, [sp + imm] */ \ |
| 3660 | thumb_access_memory(load, imm, reg[REG_SP] + (imm * 4), reg[4], u32); \ |
| 3661 | break; \ |
| 3662 | \ |
| 3663 | case 0x9D: \ |
| 3664 | /* LDR r5, [sp + imm] */ \ |
| 3665 | thumb_access_memory(load, imm, reg[REG_SP] + (imm * 4), reg[5], u32); \ |
| 3666 | break; \ |
| 3667 | \ |
| 3668 | case 0x9E: \ |
| 3669 | /* LDR r6, [sp + imm] */ \ |
| 3670 | thumb_access_memory(load, imm, reg[REG_SP] + (imm * 4), reg[6], u32); \ |
| 3671 | break; \ |
| 3672 | \ |
| 3673 | case 0x9F: \ |
| 3674 | /* LDR r7, [sp + imm] */ \ |
| 3675 | thumb_access_memory(load, imm, reg[REG_SP] + (imm * 4), reg[7], u32); \ |
| 3676 | break; \ |
| 3677 | \ |
| 3678 | case 0xA0: \ |
| 3679 | /* ADD r0, pc, +imm */ \ |
| 3680 | thumb_add_noflags(imm, 0, (pc & ~2) + 4, (imm * 4)); \ |
| 3681 | break; \ |
| 3682 | \ |
| 3683 | case 0xA1: \ |
| 3684 | /* ADD r1, pc, +imm */ \ |
| 3685 | thumb_add_noflags(imm, 1, (pc & ~2) + 4, (imm * 4)); \ |
| 3686 | break; \ |
| 3687 | \ |
| 3688 | case 0xA2: \ |
| 3689 | /* ADD r2, pc, +imm */ \ |
| 3690 | thumb_add_noflags(imm, 2, (pc & ~2) + 4, (imm * 4)); \ |
| 3691 | break; \ |
| 3692 | \ |
| 3693 | case 0xA3: \ |
| 3694 | /* ADD r3, pc, +imm */ \ |
| 3695 | thumb_add_noflags(imm, 3, (pc & ~2) + 4, (imm * 4)); \ |
| 3696 | break; \ |
| 3697 | \ |
| 3698 | case 0xA4: \ |
| 3699 | /* ADD r4, pc, +imm */ \ |
| 3700 | thumb_add_noflags(imm, 4, (pc & ~2) + 4, (imm * 4)); \ |
| 3701 | break; \ |
| 3702 | \ |
| 3703 | case 0xA5: \ |
| 3704 | /* ADD r5, pc, +imm */ \ |
| 3705 | thumb_add_noflags(imm, 5, (pc & ~2) + 4, (imm * 4)); \ |
| 3706 | break; \ |
| 3707 | \ |
| 3708 | case 0xA6: \ |
| 3709 | /* ADD r6, pc, +imm */ \ |
| 3710 | thumb_add_noflags(imm, 6, (pc & ~2) + 4, (imm * 4)); \ |
| 3711 | break; \ |
| 3712 | \ |
| 3713 | case 0xA7: \ |
| 3714 | /* ADD r7, pc, +imm */ \ |
| 3715 | thumb_add_noflags(imm, 7, (pc & ~2) + 4, (imm * 4)); \ |
| 3716 | break; \ |
| 3717 | \ |
| 3718 | case 0xA8: \ |
| 3719 | /* ADD r0, sp, +imm */ \ |
| 3720 | thumb_add_noflags(imm, 0, reg[REG_SP], (imm * 4)); \ |
| 3721 | break; \ |
| 3722 | \ |
| 3723 | case 0xA9: \ |
| 3724 | /* ADD r1, sp, +imm */ \ |
| 3725 | thumb_add_noflags(imm, 1, reg[REG_SP], (imm * 4)); \ |
| 3726 | break; \ |
| 3727 | \ |
| 3728 | case 0xAA: \ |
| 3729 | /* ADD r2, sp, +imm */ \ |
| 3730 | thumb_add_noflags(imm, 2, reg[REG_SP], (imm * 4)); \ |
| 3731 | break; \ |
| 3732 | \ |
| 3733 | case 0xAB: \ |
| 3734 | /* ADD r3, sp, +imm */ \ |
| 3735 | thumb_add_noflags(imm, 3, reg[REG_SP], (imm * 4)); \ |
| 3736 | break; \ |
| 3737 | \ |
| 3738 | case 0xAC: \ |
| 3739 | /* ADD r4, sp, +imm */ \ |
| 3740 | thumb_add_noflags(imm, 4, reg[REG_SP], (imm * 4)); \ |
| 3741 | break; \ |
| 3742 | \ |
| 3743 | case 0xAD: \ |
| 3744 | /* ADD r5, sp, +imm */ \ |
| 3745 | thumb_add_noflags(imm, 5, reg[REG_SP], (imm * 4)); \ |
| 3746 | break; \ |
| 3747 | \ |
| 3748 | case 0xAE: \ |
| 3749 | /* ADD r6, sp, +imm */ \ |
| 3750 | thumb_add_noflags(imm, 6, reg[REG_SP], (imm * 4)); \ |
| 3751 | break; \ |
| 3752 | \ |
| 3753 | case 0xAF: \ |
| 3754 | /* ADD r7, sp, +imm */ \ |
| 3755 | thumb_add_noflags(imm, 7, reg[REG_SP], (imm * 4)); \ |
| 3756 | break; \ |
| 3757 | \ |
| 3758 | case 0xB0 ... 0xB3: \ |
| 3759 | if((opcode >> 7) & 0x01) \ |
| 3760 | { \ |
| 3761 | /* ADD sp, -imm */ \ |
| 3762 | thumb_add_noflags(add_sp, 13, reg[REG_SP], -(imm * 4)); \ |
| 3763 | } \ |
| 3764 | else \ |
| 3765 | { \ |
| 3766 | /* ADD sp, +imm */ \ |
| 3767 | thumb_add_noflags(add_sp, 13, reg[REG_SP], (imm * 4)); \ |
| 3768 | } \ |
| 3769 | break; \ |
| 3770 | \ |
| 3771 | case 0xB4: \ |
| 3772 | /* PUSH rlist */ \ |
| 3773 | thumb_block_memory(store, down, no_op, 13); \ |
| 3774 | break; \ |
| 3775 | \ |
| 3776 | case 0xB5: \ |
| 3777 | /* PUSH rlist, lr */ \ |
| 3778 | thumb_block_memory(store, push_lr, push_lr, 13); \ |
| 3779 | break; \ |
| 3780 | \ |
| 3781 | case 0xBC: \ |
| 3782 | /* POP rlist */ \ |
| 3783 | thumb_block_memory(load, no_op, up, 13); \ |
| 3784 | break; \ |
| 3785 | \ |
| 3786 | case 0xBD: \ |
| 3787 | /* POP rlist, pc */ \ |
| 3788 | thumb_block_memory(load, no_op, pop_pc, 13); \ |
| 3789 | break; \ |
| 3790 | \ |
| 3791 | case 0xC0: \ |
| 3792 | /* STMIA r0!, rlist */ \ |
| 3793 | thumb_block_memory(store, no_op, up, 0); \ |
| 3794 | break; \ |
| 3795 | \ |
| 3796 | case 0xC1: \ |
| 3797 | /* STMIA r1!, rlist */ \ |
| 3798 | thumb_block_memory(store, no_op, up, 1); \ |
| 3799 | break; \ |
| 3800 | \ |
| 3801 | case 0xC2: \ |
| 3802 | /* STMIA r2!, rlist */ \ |
| 3803 | thumb_block_memory(store, no_op, up, 2); \ |
| 3804 | break; \ |
| 3805 | \ |
| 3806 | case 0xC3: \ |
| 3807 | /* STMIA r3!, rlist */ \ |
| 3808 | thumb_block_memory(store, no_op, up, 3); \ |
| 3809 | break; \ |
| 3810 | \ |
| 3811 | case 0xC4: \ |
| 3812 | /* STMIA r4!, rlist */ \ |
| 3813 | thumb_block_memory(store, no_op, up, 4); \ |
| 3814 | break; \ |
| 3815 | \ |
| 3816 | case 0xC5: \ |
| 3817 | /* STMIA r5!, rlist */ \ |
| 3818 | thumb_block_memory(store, no_op, up, 5); \ |
| 3819 | break; \ |
| 3820 | \ |
| 3821 | case 0xC6: \ |
| 3822 | /* STMIA r6!, rlist */ \ |
| 3823 | thumb_block_memory(store, no_op, up, 6); \ |
| 3824 | break; \ |
| 3825 | \ |
| 3826 | case 0xC7: \ |
| 3827 | /* STMIA r7!, rlist */ \ |
| 3828 | thumb_block_memory(store, no_op, up, 7); \ |
| 3829 | break; \ |
| 3830 | \ |
| 3831 | case 0xC8: \ |
| 3832 | /* LDMIA r0!, rlist */ \ |
| 3833 | thumb_block_memory(load, no_op, up, 0); \ |
| 3834 | break; \ |
| 3835 | \ |
| 3836 | case 0xC9: \ |
| 3837 | /* LDMIA r1!, rlist */ \ |
| 3838 | thumb_block_memory(load, no_op, up, 1); \ |
| 3839 | break; \ |
| 3840 | \ |
| 3841 | case 0xCA: \ |
| 3842 | /* LDMIA r2!, rlist */ \ |
| 3843 | thumb_block_memory(load, no_op, up, 2); \ |
| 3844 | break; \ |
| 3845 | \ |
| 3846 | case 0xCB: \ |
| 3847 | /* LDMIA r3!, rlist */ \ |
| 3848 | thumb_block_memory(load, no_op, up, 3); \ |
| 3849 | break; \ |
| 3850 | \ |
| 3851 | case 0xCC: \ |
| 3852 | /* LDMIA r4!, rlist */ \ |
| 3853 | thumb_block_memory(load, no_op, up, 4); \ |
| 3854 | break; \ |
| 3855 | \ |
| 3856 | case 0xCD: \ |
| 3857 | /* LDMIA r5!, rlist */ \ |
| 3858 | thumb_block_memory(load, no_op, up, 5); \ |
| 3859 | break; \ |
| 3860 | \ |
| 3861 | case 0xCE: \ |
| 3862 | /* LDMIA r6!, rlist */ \ |
| 3863 | thumb_block_memory(load, no_op, up, 6); \ |
| 3864 | break; \ |
| 3865 | \ |
| 3866 | case 0xCF: \ |
| 3867 | /* LDMIA r7!, rlist */ \ |
| 3868 | thumb_block_memory(load, no_op, up, 7); \ |
| 3869 | break; \ |
| 3870 | \ |
| 3871 | case 0xD0: \ |
| 3872 | /* BEQ label */ \ |
| 3873 | thumb_conditional_branch(z_flag == 1); \ |
| 3874 | break; \ |
| 3875 | \ |
| 3876 | case 0xD1: \ |
| 3877 | /* BNE label */ \ |
| 3878 | thumb_conditional_branch(z_flag == 0); \ |
| 3879 | break; \ |
| 3880 | \ |
| 3881 | case 0xD2: \ |
| 3882 | /* BCS label */ \ |
| 3883 | thumb_conditional_branch(c_flag == 1); \ |
| 3884 | break; \ |
| 3885 | \ |
| 3886 | case 0xD3: \ |
| 3887 | /* BCC label */ \ |
| 3888 | thumb_conditional_branch(c_flag == 0); \ |
| 3889 | break; \ |
| 3890 | \ |
| 3891 | case 0xD4: \ |
| 3892 | /* BMI label */ \ |
| 3893 | thumb_conditional_branch(n_flag == 1); \ |
| 3894 | break; \ |
| 3895 | \ |
| 3896 | case 0xD5: \ |
| 3897 | /* BPL label */ \ |
| 3898 | thumb_conditional_branch(n_flag == 0); \ |
| 3899 | break; \ |
| 3900 | \ |
| 3901 | case 0xD6: \ |
| 3902 | /* BVS label */ \ |
| 3903 | thumb_conditional_branch(v_flag == 1); \ |
| 3904 | break; \ |
| 3905 | \ |
| 3906 | case 0xD7: \ |
| 3907 | /* BVC label */ \ |
| 3908 | thumb_conditional_branch(v_flag == 0); \ |
| 3909 | break; \ |
| 3910 | \ |
| 3911 | case 0xD8: \ |
| 3912 | /* BHI label */ \ |
| 3913 | thumb_conditional_branch(c_flag & (z_flag ^ 1)); \ |
| 3914 | break; \ |
| 3915 | \ |
| 3916 | case 0xD9: \ |
| 3917 | /* BLS label */ \ |
| 3918 | thumb_conditional_branch((c_flag == 0) | z_flag); \ |
| 3919 | break; \ |
| 3920 | \ |
| 3921 | case 0xDA: \ |
| 3922 | /* BGE label */ \ |
| 3923 | thumb_conditional_branch(n_flag == v_flag); \ |
| 3924 | break; \ |
| 3925 | \ |
| 3926 | case 0xDB: \ |
| 3927 | /* BLT label */ \ |
| 3928 | thumb_conditional_branch(n_flag != v_flag); \ |
| 3929 | break; \ |
| 3930 | \ |
| 3931 | case 0xDC: \ |
| 3932 | /* BGT label */ \ |
| 3933 | thumb_conditional_branch((z_flag == 0) & (n_flag == v_flag)); \ |
| 3934 | break; \ |
| 3935 | \ |
| 3936 | case 0xDD: \ |
| 3937 | /* BLE label */ \ |
| 3938 | thumb_conditional_branch(z_flag | (n_flag != v_flag)); \ |
| 3939 | break; \ |
| 3940 | \ |
| 3941 | case 0xDF: \ |
| 3942 | { \ |
| 3943 | /* SWI comment */ \ |
| 3944 | u32 swi_comment = opcode & 0xFF; \ |
| 3945 | \ |
| 3946 | switch(swi_comment) \ |
| 3947 | { \ |
| 3948 | default: \ |
| 3949 | reg_mode[MODE_SUPERVISOR][6] = pc + 2; \ |
| 3950 | spsr[MODE_SUPERVISOR] = reg[REG_CPSR]; \ |
| 3951 | reg[REG_PC] = 0x00000008; \ |
| 3952 | thumb_update_pc(); \ |
| 3953 | reg[REG_CPSR] = (reg[REG_CPSR] & ~0x3F) | 0x13; \ |
| 3954 | set_cpu_mode(MODE_SUPERVISOR); \ |
| 3955 | collapse_flags(); \ |
| 3956 | goto arm_loop; \ |
| 3957 | } \ |
| 3958 | break; \ |
| 3959 | } \ |
| 3960 | \ |
| 3961 | case 0xE0 ... 0xE7: \ |
| 3962 | { \ |
| 3963 | /* B label */ \ |
| 3964 | thumb_decode_branch(); \ |
| 3965 | thumb_pc_offset_update(((s32)(offset << 21) >> 20) + 4); \ |
| 3966 | break; \ |
| 3967 | } \ |
| 3968 | \ |
| 3969 | case 0xF0 ... 0xF7: \ |
| 3970 | { \ |
| 3971 | /* (low word) BL label */ \ |
| 3972 | thumb_decode_branch(); \ |
| 3973 | reg[REG_LR] = pc + 4 + ((s32)(offset << 21) >> 9); \ |
| 3974 | thumb_pc_offset(2); \ |
| 3975 | break; \ |
| 3976 | } \ |
| 3977 | \ |
| 3978 | case 0xF8 ... 0xFF: \ |
| 3979 | { \ |
| 3980 | /* (high word) BL label */ \ |
| 3981 | thumb_decode_branch(); \ |
| 3982 | u32 lr = (pc + 2) | 0x01; \ |
| 3983 | pc = reg[REG_LR] + (offset * 2); \ |
| 3984 | reg[REG_LR] = lr; \ |
| 3985 | reg[REG_PC] = pc; \ |
| 3986 | break; \ |
| 3987 | } \ |
| 3988 | } \ |
| 3989 | |
| 3990 | void print_arm_registers() |
| 3991 | { |
| 3992 | u32 i, i2, i3; |
| 3993 | |
| 3994 | for(i = 0, i3 = 0; i < 4; i++) |
| 3995 | { |
| 3996 | debug_screen_printf(" "); |
| 3997 | for(i2 = 0; i2 < 4; i2++, i3++) |
| 3998 | { |
| 3999 | debug_screen_printf("R%02d %08x ", i3, reg[i3]); |
| 4000 | } |
| 4001 | debug_screen_newline(1); |
| 4002 | } |
| 4003 | } |
| 4004 | |
| 4005 | void print_thumb_instruction() |
| 4006 | { |
| 4007 | debug_screen_printf("Thumb instruction at PC: %04x", |
| 4008 | read_memory16(reg[REG_PC])); |
| 4009 | debug_screen_newline(1); |
| 4010 | } |
| 4011 | |
| 4012 | void print_arm_instruction() |
| 4013 | { |
| 4014 | debug_screen_printf("ARM instruction at PC: %08x", |
| 4015 | read_memory32(reg[REG_PC])); |
| 4016 | debug_screen_newline(1); |
| 4017 | } |
| 4018 | |
| 4019 | void print_flags() |
| 4020 | { |
| 4021 | u32 cpsr = reg[REG_CPSR]; |
| 4022 | debug_screen_newline(1); |
| 4023 | debug_screen_printf( |
| 4024 | " N: %d Z: %d C: %d V: %d CPSR: %08x SPSR: %08x mode: %s", |
| 4025 | (cpsr >> 31) & 0x01, (cpsr >> 30) & 0x01, (cpsr >> 29) & 0x01, |
| 4026 | (cpsr >> 28) & 0x01, cpsr, spsr[reg[CPU_MODE]], |
| 4027 | cpu_mode_names[reg[CPU_MODE]]); |
| 4028 | debug_screen_newline(2); |
| 4029 | } |
| 4030 | |
| 4031 | const u32 stack_print_lines = 2; |
| 4032 | |
| 4033 | void print_stack() |
| 4034 | { |
| 4035 | u32 i, i2, i3; |
| 4036 | |
| 4037 | debug_screen_printf("Stack:"); |
| 4038 | debug_screen_newline(1); |
| 4039 | |
| 4040 | for(i = 0, i3 = reg[REG_SP]; i < stack_print_lines; i++) |
| 4041 | { |
| 4042 | for(i2 = 0; i2 < 5; i2++, i3 += 4) |
| 4043 | { |
| 4044 | debug_screen_printf(" %08x", read_memory32(i3)); |
| 4045 | } |
| 4046 | if(i != stack_print_lines) |
| 4047 | debug_screen_newline(1); |
| 4048 | } |
| 4049 | |
| 4050 | debug_screen_newline(1); |
| 4051 | } |
| 4052 | |
| 4053 | u32 instruction_count = 0; |
| 4054 | |
| 4055 | u32 output_field = 0; |
| 4056 | const u32 num_output_fields = 2; |
| 4057 | |
| 4058 | u32 last_instruction = 0; |
| 4059 | |
| 4060 | u32 in_interrupt = 0; |
| 4061 | |
| 4062 | u32 debug_on() |
| 4063 | { |
| 4064 | current_debug_state = STEP; |
| 4065 | debug_screen_start(); |
| 4066 | } |
| 4067 | |
| 4068 | u32 debug_off(debug_state new_debug_state) |
| 4069 | { |
| 4070 | current_debug_state = new_debug_state; |
| 4071 | debug_screen_end(); |
| 4072 | } |
| 4073 | |
| 4074 | u32 function_cc step_debug(u32 pc, u32 cycles) |
| 4075 | { |
| 4076 | u32 thumb = 0; |
| 4077 | |
| 4078 | reg[REG_PC] = pc; |
| 4079 | |
| 4080 | if(reg[REG_CPSR] & 0x20) |
| 4081 | thumb = 1; |
| 4082 | |
| 4083 | instruction_count++; |
| 4084 | |
| 4085 | switch(current_debug_state) |
| 4086 | { |
| 4087 | case PC_BREAKPOINT: |
| 4088 | if(reg[REG_PC] == breakpoint_value) |
| 4089 | debug_on(); |
| 4090 | |
| 4091 | break; |
| 4092 | |
| 4093 | case Z_BREAKPOINT: |
| 4094 | if(reg[REG_Z_FLAG] == 1) |
| 4095 | debug_on(); |
| 4096 | |
| 4097 | break; |
| 4098 | |
| 4099 | case VCOUNT_BREAKPOINT: |
| 4100 | if(io_registers[REG_VCOUNT] == breakpoint_value) |
| 4101 | debug_on(); |
| 4102 | |
| 4103 | break; |
| 4104 | |
| 4105 | case COUNTDOWN_BREAKPOINT: |
| 4106 | if(breakpoint_value == 0) |
| 4107 | debug_on(); |
| 4108 | else |
| 4109 | breakpoint_value--; |
| 4110 | |
| 4111 | break; |
| 4112 | |
| 4113 | case COUNTDOWN_BREAKPOINT_B: |
| 4114 | if(breakpoint_value == instruction_count) |
| 4115 | debug_on(); |
| 4116 | |
| 4117 | break; |
| 4118 | |
| 4119 | case COUNTDOWN_BREAKPOINT_C: |
| 4120 | { |
| 4121 | if(pc == 0x18) |
| 4122 | in_interrupt++; |
| 4123 | |
| 4124 | if((breakpoint_value == 0) && (in_interrupt == 0)) |
| 4125 | { |
| 4126 | debug_on(); |
| 4127 | } |
| 4128 | else |
| 4129 | |
| 4130 | if(in_interrupt == 0) |
| 4131 | breakpoint_value--; |
| 4132 | |
| 4133 | if(in_interrupt && (pc == 0x13c)) |
| 4134 | in_interrupt--; |
| 4135 | |
| 4136 | break; |
| 4137 | } |
| 4138 | } |
| 4139 | |
| 4140 | if((current_debug_state == STEP) || |
| 4141 | (current_debug_state == STEP_RUN)) |
| 4142 | { |
| 4143 | u32 key = 0; |
| 4144 | |
| 4145 | SDL_LockMutex(sound_mutex); |
| 4146 | SDL_PauseAudio(1); |
| 4147 | |
| 4148 | if(output_field >= num_output_fields) |
| 4149 | { |
| 4150 | output_field = 0; |
| 4151 | debug_screen_clear(); |
| 4152 | } |
| 4153 | |
| 4154 | if(thumb) |
| 4155 | print_thumb_instruction(cycles); |
| 4156 | else |
| 4157 | print_arm_instruction(cycles); |
| 4158 | |
| 4159 | print_arm_registers(); |
| 4160 | print_flags(); |
| 4161 | print_stack(); |
| 4162 | |
| 4163 | |
| 4164 | printf("%x instructions in, VCOUNT %d, cycles remaining: %d \n", |
| 4165 | instruction_count, io_registers[REG_VCOUNT], cycles); |
| 4166 | |
| 4167 | debug_screen_update(); |
| 4168 | output_field++; |
| 4169 | |
| 4170 | if(current_debug_state != STEP_RUN) |
| 4171 | { |
| 4172 | |
| 4173 | #ifdef STDIO_DEBUG |
| 4174 | key = getchar(); |
| 4175 | #else |
| 4176 | |
| 4177 | gui_action_type next_input = CURSOR_NONE; |
| 4178 | while(next_input == CURSOR_NONE) |
| 4179 | { |
| 4180 | next_input = get_gui_input(); |
| 4181 | |
| 4182 | switch(next_input) |
| 4183 | { |
| 4184 | case CURSOR_BACK: |
| 4185 | key = 'b'; |
| 4186 | break; |
| 4187 | |
| 4188 | case CURSOR_UP: |
| 4189 | key = 'r'; |
| 4190 | break; |
| 4191 | |
| 4192 | case CURSOR_EXIT: |
| 4193 | key = 'q'; |
| 4194 | break; |
| 4195 | |
| 4196 | default: |
| 4197 | key = 'n'; |
| 4198 | break; |
| 4199 | } |
| 4200 | } |
| 4201 | #endif |
| 4202 | } |
| 4203 | |
| 4204 | switch(key) |
| 4205 | { |
| 4206 | case 'd': |
| 4207 | dump_translation_cache(); |
| 4208 | break; |
| 4209 | |
| 4210 | case 'z': |
| 4211 | debug_off(Z_BREAKPOINT); |
| 4212 | break; |
| 4213 | |
| 4214 | #ifdef STDIO_DEBUG |
| 4215 | case 'x': |
| 4216 | printf("break at PC (hex): "); |
| 4217 | scanf("%08x", &breakpoint_value); |
| 4218 | debug_off(PC_BREAKPOINT); |
| 4219 | break; |
| 4220 | |
| 4221 | case 'c': |
| 4222 | printf("break after N instructions (hex): "); |
| 4223 | scanf("%08x", &breakpoint_value); |
| 4224 | breakpoint_value -= 1; |
| 4225 | debug_off(COUNTDOWN_BREAKPOINT); |
| 4226 | break; |
| 4227 | |
| 4228 | case 'f': |
| 4229 | printf("break after N instructions, skip in IRQ (hex): "); |
| 4230 | scanf("%08x", &breakpoint_value); |
| 4231 | breakpoint_value -= 1; |
| 4232 | debug_off(COUNTDOWN_BREAKPOINT_C); |
| 4233 | break; |
| 4234 | |
| 4235 | case 'g': |
| 4236 | printf("break after N instructions (since start): "); |
| 4237 | scanf("%d", &breakpoint_value); |
| 4238 | debug_off(COUNTDOWN_BREAKPOINT_B); |
| 4239 | break; |
| 4240 | |
| 4241 | case 'v': |
| 4242 | printf("break at VCOUNT: "); |
| 4243 | scanf("%d", &breakpoint_value); |
| 4244 | debug_off(VCOUNT_BREAKPOINT); |
| 4245 | break; |
| 4246 | #endif |
| 4247 | |
| 4248 | case 's': |
| 4249 | current_debug_state = STEP_RUN; |
| 4250 | break; |
| 4251 | |
| 4252 | case 'r': |
| 4253 | debug_off(RUN); |
| 4254 | break; |
| 4255 | |
| 4256 | case 'b': |
| 4257 | debug_off(PC_BREAKPOINT); |
| 4258 | break; |
| 4259 | |
| 4260 | case 't': |
| 4261 | global_cycles_per_instruction = 0; |
| 4262 | debug_off(RUN); |
| 4263 | break; |
| 4264 | |
| 4265 | case 'a': |
| 4266 | { |
| 4267 | u8 current_savestate_filename[512]; |
| 4268 | u16 *current_screen = copy_screen(); |
| 4269 | get_savestate_filename_noshot(savestate_slot, |
| 4270 | current_savestate_filename); |
| 4271 | save_state(current_savestate_filename, current_screen); |
| 4272 | free(current_screen); |
| 4273 | break; |
| 4274 | } |
| 4275 | |
| 4276 | case 'q': |
| 4277 | quit(); |
| 4278 | } |
| 4279 | |
| 4280 | SDL_PauseAudio(0); |
| 4281 | SDL_UnlockMutex(sound_mutex); |
| 4282 | } |
| 4283 | |
| 4284 | last_instruction = reg[REG_PC]; |
| 4285 | |
| 4286 | if(thumb) |
| 4287 | reg[REG_PC] = pc + 2; |
| 4288 | else |
| 4289 | reg[REG_PC] = pc + 4; |
| 4290 | |
| 4291 | return 0; |
| 4292 | } |
| 4293 | |
| 4294 | void set_cpu_mode(cpu_mode_type new_mode) |
| 4295 | { |
| 4296 | u32 i; |
| 4297 | cpu_mode_type cpu_mode = reg[CPU_MODE]; |
| 4298 | |
| 4299 | if(cpu_mode != new_mode) |
| 4300 | { |
| 4301 | if(new_mode == MODE_FIQ) |
| 4302 | { |
| 4303 | for(i = 8; i < 15; i++) |
| 4304 | { |
| 4305 | reg_mode[cpu_mode][i - 8] = reg[i]; |
| 4306 | } |
| 4307 | } |
| 4308 | else |
| 4309 | { |
| 4310 | reg_mode[cpu_mode][5] = reg[REG_SP]; |
| 4311 | reg_mode[cpu_mode][6] = reg[REG_LR]; |
| 4312 | } |
| 4313 | |
| 4314 | if(cpu_mode == MODE_FIQ) |
| 4315 | { |
| 4316 | for(i = 8; i < 15; i++) |
| 4317 | { |
| 4318 | reg[i] = reg_mode[new_mode][i - 8]; |
| 4319 | } |
| 4320 | } |
| 4321 | else |
| 4322 | { |
| 4323 | reg[REG_SP] = reg_mode[new_mode][5]; |
| 4324 | reg[REG_LR] = reg_mode[new_mode][6]; |
| 4325 | } |
| 4326 | |
| 4327 | reg[CPU_MODE] = new_mode; |
| 4328 | } |
| 4329 | } |
| 4330 | |
| 4331 | void raise_interrupt(irq_type irq_raised) |
| 4332 | { |
| 4333 | // The specific IRQ must be enabled in IE, master IRQ enable must be on, |
| 4334 | // and it must be on in the flags. |
| 4335 | io_registers[REG_IF] |= irq_raised; |
| 4336 | |
| 4337 | if((io_registers[REG_IE] & irq_raised) && io_registers[REG_IME] && |
| 4338 | ((reg[REG_CPSR] & 0x80) == 0)) |
| 4339 | { |
| 4340 | bios_read_protect = 0xe55ec002; |
| 4341 | |
| 4342 | // Interrupt handler in BIOS |
| 4343 | reg_mode[MODE_IRQ][6] = reg[REG_PC] + 4; |
| 4344 | spsr[MODE_IRQ] = reg[REG_CPSR]; |
| 4345 | reg[REG_CPSR] = 0xD2; |
| 4346 | reg[REG_PC] = 0x00000018; |
| 4347 | |
| 4348 | bios_region_read_allow(); |
| 4349 | |
| 4350 | set_cpu_mode(MODE_IRQ); |
| 4351 | reg[CPU_HALT_STATE] = CPU_ACTIVE; |
| 4352 | reg[CHANGED_PC_STATUS] = 1; |
| 4353 | } |
| 4354 | } |
| 4355 | |
| 4356 | u32 execute_arm(u32 cycles) |
| 4357 | { |
| 4358 | u32 pc = reg[REG_PC]; |
| 4359 | u32 opcode; |
| 4360 | u32 condition; |
| 4361 | u32 n_flag, z_flag, c_flag, v_flag; |
| 4362 | u32 pc_region = (pc >> 15); |
| 4363 | u8 *pc_address_block = memory_map_read[pc_region]; |
| 4364 | u32 new_pc_region; |
| 4365 | s32 cycles_remaining; |
| 4366 | u32 cycles_per_instruction = global_cycles_per_instruction; |
| 4367 | cpu_alert_type cpu_alert; |
| 4368 | |
| 4369 | u32 old_pc; |
| 4370 | |
| 4371 | if(pc_address_block == NULL) |
| 4372 | pc_address_block = load_gamepak_page(pc_region & 0x3FF); |
| 4373 | |
| 4374 | while(1) |
| 4375 | { |
| 4376 | cycles_remaining = cycles; |
| 4377 | pc = reg[REG_PC]; |
| 4378 | extract_flags(); |
| 4379 | |
| 4380 | if(reg[REG_CPSR] & 0x20) |
| 4381 | goto thumb_loop; |
| 4382 | |
| 4383 | do |
| 4384 | { |
| 4385 | arm_loop: |
| 4386 | |
| 4387 | collapse_flags(); |
| 4388 | step_debug(pc, cycles_remaining); |
| 4389 | cycles_per_instruction = global_cycles_per_instruction; |
| 4390 | |
| 4391 | old_pc = pc; |
| 4392 | execute_arm_instruction(); |
| 4393 | cycles_remaining -= cycles_per_instruction; |
| 4394 | } while(cycles_remaining > 0); |
| 4395 | |
| 4396 | collapse_flags(); |
| 4397 | cycles = update_gba(); |
| 4398 | continue; |
| 4399 | |
| 4400 | do |
| 4401 | { |
| 4402 | thumb_loop: |
| 4403 | |
| 4404 | collapse_flags(); |
| 4405 | step_debug(pc, cycles_remaining); |
| 4406 | |
| 4407 | old_pc = pc; |
| 4408 | execute_thumb_instruction(); |
| 4409 | cycles_remaining -= cycles_per_instruction; |
| 4410 | } while(cycles_remaining > 0); |
| 4411 | |
| 4412 | collapse_flags(); |
| 4413 | cycles = update_gba(); |
| 4414 | continue; |
| 4415 | |
| 4416 | alert: |
| 4417 | |
| 4418 | if(cpu_alert == CPU_ALERT_IRQ) |
| 4419 | { |
| 4420 | cycles = cycles_remaining; |
| 4421 | } |
| 4422 | else |
| 4423 | { |
| 4424 | collapse_flags(); |
| 4425 | |
| 4426 | while(reg[CPU_HALT_STATE] != CPU_ACTIVE) |
| 4427 | { |
| 4428 | cycles = update_gba(); |
| 4429 | } |
| 4430 | } |
| 4431 | } |
| 4432 | } |
| 4433 | |
| 4434 | void init_cpu() |
| 4435 | { |
| 4436 | u32 i; |
| 4437 | |
| 4438 | for(i = 0; i < 16; i++) |
| 4439 | { |
| 4440 | reg[i] = 0; |
| 4441 | } |
| 4442 | |
| 4443 | reg[REG_SP] = 0x03007F00; |
| 4444 | reg[REG_PC] = 0x08000000; |
| 4445 | reg[REG_CPSR] = 0x0000001F; |
| 4446 | reg[CPU_HALT_STATE] = CPU_ACTIVE; |
| 4447 | reg[CPU_MODE] = MODE_USER; |
| 4448 | reg[CHANGED_PC_STATUS] = 0; |
| 4449 | |
| 4450 | reg_mode[MODE_USER][5] = 0x03007F00; |
| 4451 | reg_mode[MODE_IRQ][5] = 0x03007FA0; |
| 4452 | reg_mode[MODE_FIQ][5] = 0x03007FA0; |
| 4453 | reg_mode[MODE_SUPERVISOR][5] = 0x03007FE0; |
| 4454 | } |
| 4455 | |
| 4456 | void move_reg(u32 *new_reg) |
| 4457 | { |
| 4458 | u32 i; |
| 4459 | |
| 4460 | for(i = 0; i < 32; i++) |
| 4461 | { |
| 4462 | new_reg[i] = reg[i]; |
| 4463 | } |
| 4464 | |
| 4465 | reg = new_reg; |
| 4466 | } |
| 4467 | |
| 4468 | |
| 4469 | #define cpu_savestate_builder(type) \ |
| 4470 | void cpu_##type##_savestate(file_tag_type savestate_file) \ |
| 4471 | { \ |
| 4472 | file_##type(savestate_file, reg, 0x100); \ |
| 4473 | file_##type##_array(savestate_file, spsr); \ |
| 4474 | file_##type##_array(savestate_file, reg_mode); \ |
| 4475 | } \ |
| 4476 | |
| 4477 | cpu_savestate_builder(read); |
| 4478 | cpu_savestate_builder(write_mem); |
| 4479 | |