| 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 "common.h" |
| 25 | |
| 26 | u32 memory_region_access_read_u8[16]; |
| 27 | u32 memory_region_access_read_s8[16]; |
| 28 | u32 memory_region_access_read_u16[16]; |
| 29 | u32 memory_region_access_read_s16[16]; |
| 30 | u32 memory_region_access_read_u32[16]; |
| 31 | u32 memory_region_access_write_u8[16]; |
| 32 | u32 memory_region_access_write_u16[16]; |
| 33 | u32 memory_region_access_write_u32[16]; |
| 34 | u32 memory_reads_u8; |
| 35 | u32 memory_reads_s8; |
| 36 | u32 memory_reads_u16; |
| 37 | u32 memory_reads_s16; |
| 38 | u32 memory_reads_u32; |
| 39 | u32 memory_writes_u8; |
| 40 | u32 memory_writes_u16; |
| 41 | u32 memory_writes_u32; |
| 42 | |
| 43 | const u8 bit_count[256] = |
| 44 | { |
| 45 | 0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4, 1, 2, 2, 3, 2, 3, 3, |
| 46 | 4, 2, 3, 3, 4, 3, 4, 4, 5, 1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, |
| 47 | 4, 5, 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, 1, 2, 2, 3, 2, |
| 48 | 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5, 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, |
| 49 | 4, 5, 5, 6, 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, 3, 4, 4, |
| 50 | 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7, 1, 2, 2, 3, 2, 3, 3, 4, 2, 3, |
| 51 | 3, 4, 3, 4, 4, 5, 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, 2, |
| 52 | 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, 3, 4, 4, 5, 4, 5, 5, 6, |
| 53 | 4, 5, 5, 6, 5, 6, 6, 7, 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, |
| 54 | 6, 3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7, 3, 4, 4, 5, 4, 5, |
| 55 | 5, 6, 4, 5, 5, 6, 5, 6, 6, 7, 4, 5, 5, 6, 5, 6, 6, 7, 5, 6, 6, 7, 6, |
| 56 | 7, 7, 8 |
| 57 | }; |
| 58 | |
| 59 | |
| 60 | #ifdef REGISTER_USAGE_ANALYZE |
| 61 | |
| 62 | u64 instructions_total = 0; |
| 63 | |
| 64 | u64 arm_reg_freq[16]; |
| 65 | u64 arm_reg_access_total = 0; |
| 66 | u64 arm_instructions_total = 0; |
| 67 | |
| 68 | u64 thumb_reg_freq[16]; |
| 69 | u64 thumb_reg_access_total = 0; |
| 70 | u64 thumb_instructions_total = 0; |
| 71 | |
| 72 | // mla/long mla's addition operand are not counted yet. |
| 73 | |
| 74 | #define using_register(instruction_set, register, type) \ |
| 75 | instruction_set##_reg_freq[register]++; \ |
| 76 | instruction_set##_reg_access_total++ \ |
| 77 | |
| 78 | #define using_register_list(instruction_set, rlist, count) \ |
| 79 | { \ |
| 80 | u32 i; \ |
| 81 | for(i = 0; i < count; i++) \ |
| 82 | { \ |
| 83 | if((reg_list >> i) & 0x01) \ |
| 84 | { \ |
| 85 | using_register(instruction_set, i, memory_target); \ |
| 86 | } \ |
| 87 | } \ |
| 88 | } \ |
| 89 | |
| 90 | #define using_instruction(instruction_set) \ |
| 91 | instruction_set##_instructions_total++; \ |
| 92 | instructions_total++ \ |
| 93 | |
| 94 | int sort_tagged_element(const void *_a, const void *_b) |
| 95 | { |
| 96 | const u64 *a = _a; |
| 97 | const u64 *b = _b; |
| 98 | |
| 99 | return (int)(b[1] - a[1]); |
| 100 | } |
| 101 | |
| 102 | void print_register_usage() |
| 103 | { |
| 104 | u32 i; |
| 105 | u64 arm_reg_freq_tagged[32]; |
| 106 | u64 thumb_reg_freq_tagged[32]; |
| 107 | double percent; |
| 108 | double percent_total = 0.0; |
| 109 | |
| 110 | for(i = 0; i < 16; i++) |
| 111 | { |
| 112 | arm_reg_freq_tagged[i * 2] = i; |
| 113 | arm_reg_freq_tagged[(i * 2) + 1] = arm_reg_freq[i]; |
| 114 | thumb_reg_freq_tagged[i * 2] = i; |
| 115 | thumb_reg_freq_tagged[(i * 2) + 1] = thumb_reg_freq[i]; |
| 116 | } |
| 117 | |
| 118 | qsort(arm_reg_freq_tagged, 16, sizeof(u64) * 2, sort_tagged_element); |
| 119 | qsort(thumb_reg_freq_tagged, 16, sizeof(u64) * 2, sort_tagged_element); |
| 120 | |
| 121 | printf("ARM register usage (%lf%% ARM instructions):\n", |
| 122 | (arm_instructions_total * 100.0) / instructions_total); |
| 123 | for(i = 0; i < 16; i++) |
| 124 | { |
| 125 | percent = (arm_reg_freq_tagged[(i * 2) + 1] * 100.0) / |
| 126 | arm_reg_access_total; |
| 127 | percent_total += percent; |
| 128 | printf("r%02d: %lf%% (-- %lf%%)\n", |
| 129 | (u32)arm_reg_freq_tagged[(i * 2)], percent, percent_total); |
| 130 | } |
| 131 | |
| 132 | percent_total = 0.0; |
| 133 | |
| 134 | printf("\nThumb register usage (%lf%% Thumb instructions):\n", |
| 135 | (thumb_instructions_total * 100.0) / instructions_total); |
| 136 | for(i = 0; i < 16; i++) |
| 137 | { |
| 138 | percent = (thumb_reg_freq_tagged[(i * 2) + 1] * 100.0) / |
| 139 | thumb_reg_access_total; |
| 140 | percent_total += percent; |
| 141 | printf("r%02d: %lf%% (-- %lf%%)\n", |
| 142 | (u32)thumb_reg_freq_tagged[(i * 2)], percent, percent_total); |
| 143 | } |
| 144 | |
| 145 | memset(arm_reg_freq, 0, sizeof(u64) * 16); |
| 146 | memset(thumb_reg_freq, 0, sizeof(u64) * 16); |
| 147 | arm_reg_access_total = 0; |
| 148 | thumb_reg_access_total = 0; |
| 149 | } |
| 150 | |
| 151 | #else |
| 152 | |
| 153 | #define using_register(instruction_set, register, type) \ |
| 154 | |
| 155 | #define using_register_list(instruction_set, rlist, count) \ |
| 156 | |
| 157 | #define using_instruction(instruction_set) \ |
| 158 | |
| 159 | #endif |
| 160 | |
| 161 | |
| 162 | #define arm_decode_data_proc_reg() \ |
| 163 | u32 rn = (opcode >> 16) & 0x0F; \ |
| 164 | u32 rd = (opcode >> 12) & 0x0F; \ |
| 165 | u32 rm = opcode & 0x0F; \ |
| 166 | using_register(arm, rd, op_dest); \ |
| 167 | using_register(arm, rn, op_src); \ |
| 168 | using_register(arm, rm, op_src) \ |
| 169 | |
| 170 | #define arm_decode_data_proc_imm() \ |
| 171 | u32 rn = (opcode >> 16) & 0x0F; \ |
| 172 | u32 rd = (opcode >> 12) & 0x0F; \ |
| 173 | u32 imm; \ |
| 174 | ror(imm, opcode & 0xFF, ((opcode >> 8) & 0x0F) * 2); \ |
| 175 | using_register(arm, rd, op_dest); \ |
| 176 | using_register(arm, rn, op_src) \ |
| 177 | |
| 178 | #define arm_decode_psr_reg() \ |
| 179 | u32 psr_field = (opcode >> 16) & 0x0F; \ |
| 180 | u32 rd = (opcode >> 12) & 0x0F; \ |
| 181 | u32 rm = opcode & 0x0F; \ |
| 182 | using_register(arm, rd, op_dest); \ |
| 183 | using_register(arm, rm, op_src) \ |
| 184 | |
| 185 | #define arm_decode_psr_imm() \ |
| 186 | u32 psr_field = (opcode >> 16) & 0x0F; \ |
| 187 | u32 rd = (opcode >> 12) & 0x0F; \ |
| 188 | u32 imm; \ |
| 189 | ror(imm, opcode & 0xFF, ((opcode >> 8) & 0x0F) * 2); \ |
| 190 | using_register(arm, rd, op_dest) \ |
| 191 | |
| 192 | #define arm_decode_branchx() \ |
| 193 | u32 rn = opcode & 0x0F; \ |
| 194 | using_register(arm, rn, branch_target) \ |
| 195 | |
| 196 | #define arm_decode_multiply() \ |
| 197 | u32 rd = (opcode >> 16) & 0x0F; \ |
| 198 | u32 rn = (opcode >> 12) & 0x0F; \ |
| 199 | u32 rs = (opcode >> 8) & 0x0F; \ |
| 200 | u32 rm = opcode & 0x0F; \ |
| 201 | using_register(arm, rd, op_dest); \ |
| 202 | using_register(arm, rn, op_src); \ |
| 203 | using_register(arm, rm, op_src) \ |
| 204 | |
| 205 | #define arm_decode_multiply_long() \ |
| 206 | u32 rdhi = (opcode >> 16) & 0x0F; \ |
| 207 | u32 rdlo = (opcode >> 12) & 0x0F; \ |
| 208 | u32 rn = (opcode >> 8) & 0x0F; \ |
| 209 | u32 rm = opcode & 0x0F; \ |
| 210 | using_register(arm, rdhi, op_dest); \ |
| 211 | using_register(arm, rdlo, op_dest); \ |
| 212 | using_register(arm, rn, op_src); \ |
| 213 | using_register(arm, rm, op_src) \ |
| 214 | |
| 215 | #define arm_decode_swap() \ |
| 216 | u32 rn = (opcode >> 16) & 0x0F; \ |
| 217 | u32 rd = (opcode >> 12) & 0x0F; \ |
| 218 | u32 rm = opcode & 0x0F; \ |
| 219 | using_register(arm, rd, memory_target); \ |
| 220 | using_register(arm, rn, memory_base); \ |
| 221 | using_register(arm, rm, memory_target) \ |
| 222 | |
| 223 | #define arm_decode_half_trans_r() \ |
| 224 | u32 rn = (opcode >> 16) & 0x0F; \ |
| 225 | u32 rd = (opcode >> 12) & 0x0F; \ |
| 226 | u32 rm = opcode & 0x0F; \ |
| 227 | using_register(arm, rd, memory_target); \ |
| 228 | using_register(arm, rn, memory_base); \ |
| 229 | using_register(arm, rm, memory_offset) \ |
| 230 | |
| 231 | #define arm_decode_half_trans_of() \ |
| 232 | u32 rn = (opcode >> 16) & 0x0F; \ |
| 233 | u32 rd = (opcode >> 12) & 0x0F; \ |
| 234 | u32 offset = ((opcode >> 4) & 0xF0) | (opcode & 0x0F); \ |
| 235 | using_register(arm, rd, memory_target); \ |
| 236 | using_register(arm, rn, memory_base) \ |
| 237 | |
| 238 | #define arm_decode_data_trans_imm() \ |
| 239 | u32 rn = (opcode >> 16) & 0x0F; \ |
| 240 | u32 rd = (opcode >> 12) & 0x0F; \ |
| 241 | u32 offset = opcode & 0x0FFF; \ |
| 242 | using_register(arm, rd, memory_target); \ |
| 243 | using_register(arm, rn, memory_base) \ |
| 244 | |
| 245 | #define arm_decode_data_trans_reg() \ |
| 246 | u32 rn = (opcode >> 16) & 0x0F; \ |
| 247 | u32 rd = (opcode >> 12) & 0x0F; \ |
| 248 | u32 rm = opcode & 0x0F; \ |
| 249 | using_register(arm, rd, memory_target); \ |
| 250 | using_register(arm, rn, memory_base); \ |
| 251 | using_register(arm, rm, memory_offset) \ |
| 252 | |
| 253 | #define arm_decode_block_trans() \ |
| 254 | u32 rn = (opcode >> 16) & 0x0F; \ |
| 255 | u32 reg_list = opcode & 0xFFFF; \ |
| 256 | using_register(arm, rn, memory_base); \ |
| 257 | using_register_list(arm, reg_list, 16) \ |
| 258 | |
| 259 | #define arm_decode_branch() \ |
| 260 | s32 offset = ((s32)(opcode & 0xFFFFFF) << 8) >> 6 \ |
| 261 | |
| 262 | |
| 263 | #define thumb_decode_shift() \ |
| 264 | u32 imm = (opcode >> 6) & 0x1F; \ |
| 265 | u32 rs = (opcode >> 3) & 0x07; \ |
| 266 | u32 rd = opcode & 0x07; \ |
| 267 | using_register(thumb, rd, op_dest); \ |
| 268 | using_register(thumb, rs, op_shift) \ |
| 269 | |
| 270 | #define thumb_decode_add_sub() \ |
| 271 | u32 rn = (opcode >> 6) & 0x07; \ |
| 272 | u32 rs = (opcode >> 3) & 0x07; \ |
| 273 | u32 rd = opcode & 0x07; \ |
| 274 | using_register(thumb, rd, op_dest); \ |
| 275 | using_register(thumb, rn, op_src); \ |
| 276 | using_register(thumb, rn, op_src) \ |
| 277 | |
| 278 | #define thumb_decode_add_sub_imm() \ |
| 279 | u32 imm = (opcode >> 6) & 0x07; \ |
| 280 | u32 rs = (opcode >> 3) & 0x07; \ |
| 281 | u32 rd = opcode & 0x07; \ |
| 282 | using_register(thumb, rd, op_src_dest); \ |
| 283 | using_register(thumb, rs, op_src) \ |
| 284 | |
| 285 | #define thumb_decode_imm() \ |
| 286 | u32 imm = opcode & 0xFF; \ |
| 287 | using_register(thumb, ((opcode >> 8) & 0x07), op_dest) \ |
| 288 | |
| 289 | #define thumb_decode_alu_op() \ |
| 290 | u32 rs = (opcode >> 3) & 0x07; \ |
| 291 | u32 rd = opcode & 0x07; \ |
| 292 | using_register(thumb, rd, op_src_dest); \ |
| 293 | using_register(thumb, rs, op_src) \ |
| 294 | |
| 295 | #define thumb_decode_hireg_op() \ |
| 296 | u32 rs = (opcode >> 3) & 0x0F; \ |
| 297 | u32 rd = ((opcode >> 4) & 0x08) | (opcode & 0x07); \ |
| 298 | using_register(thumb, rd, op_src_dest); \ |
| 299 | using_register(thumb, rs, op_src) \ |
| 300 | |
| 301 | |
| 302 | #define thumb_decode_mem_reg() \ |
| 303 | u32 ro = (opcode >> 6) & 0x07; \ |
| 304 | u32 rb = (opcode >> 3) & 0x07; \ |
| 305 | u32 rd = opcode & 0x07; \ |
| 306 | using_register(thumb, rd, memory_target); \ |
| 307 | using_register(thumb, rb, memory_base); \ |
| 308 | using_register(thumb, ro, memory_offset) \ |
| 309 | |
| 310 | |
| 311 | #define thumb_decode_mem_imm() \ |
| 312 | u32 imm = (opcode >> 6) & 0x1F; \ |
| 313 | u32 rb = (opcode >> 3) & 0x07; \ |
| 314 | u32 rd = opcode & 0x07; \ |
| 315 | using_register(thumb, rd, memory_target); \ |
| 316 | using_register(thumb, rb, memory_base) \ |
| 317 | |
| 318 | |
| 319 | #define thumb_decode_add_sp() \ |
| 320 | u32 imm = opcode & 0x7F; \ |
| 321 | using_register(thumb, REG_SP, op_dest) \ |
| 322 | |
| 323 | #define thumb_decode_rlist() \ |
| 324 | u32 reg_list = opcode & 0xFF; \ |
| 325 | using_register_list(thumb, rlist, 8) \ |
| 326 | |
| 327 | #define thumb_decode_branch_cond() \ |
| 328 | s32 offset = (s8)(opcode & 0xFF) \ |
| 329 | |
| 330 | #define thumb_decode_swi() \ |
| 331 | u32 comment = opcode & 0xFF \ |
| 332 | |
| 333 | #define thumb_decode_branch() \ |
| 334 | u32 offset = opcode & 0x07FF \ |
| 335 | |
| 336 | |
| 337 | #define get_shift_register(dest) \ |
| 338 | u32 shift = reg[(opcode >> 8) & 0x0F]; \ |
| 339 | using_register(arm, ((opcode >> 8) & 0x0F), op_shift); \ |
| 340 | dest = reg[rm]; \ |
| 341 | if(rm == 15) \ |
| 342 | dest += 4 \ |
| 343 | |
| 344 | |
| 345 | #define calculate_z_flag(dest) \ |
| 346 | z_flag = (dest == 0) \ |
| 347 | |
| 348 | #define calculate_n_flag(dest) \ |
| 349 | n_flag = ((signed)dest < 0) \ |
| 350 | |
| 351 | #define calculate_c_flag_sub(dest, src_a, src_b) \ |
| 352 | c_flag = ((unsigned)src_b <= (unsigned)src_a) \ |
| 353 | |
| 354 | #define calculate_v_flag_sub(dest, src_a, src_b) \ |
| 355 | v_flag = ((signed)src_b > (signed)src_a) != ((signed)dest < 0) \ |
| 356 | |
| 357 | #define calculate_c_flag_add(dest, src_a, src_b) \ |
| 358 | c_flag = ((unsigned)dest < (unsigned)src_a) \ |
| 359 | |
| 360 | #define calculate_v_flag_add(dest, src_a, src_b) \ |
| 361 | v_flag = ((signed)dest < (signed)src_a) != ((signed)src_b < 0) \ |
| 362 | |
| 363 | |
| 364 | #define calculate_reg_sh() \ |
| 365 | u32 reg_sh = 0; \ |
| 366 | switch((opcode >> 4) & 0x07) \ |
| 367 | { \ |
| 368 | /* LSL imm */ \ |
| 369 | case 0x0: \ |
| 370 | { \ |
| 371 | reg_sh = reg[rm] << ((opcode >> 7) & 0x1F); \ |
| 372 | break; \ |
| 373 | } \ |
| 374 | \ |
| 375 | /* LSL reg */ \ |
| 376 | case 0x1: \ |
| 377 | { \ |
| 378 | get_shift_register(reg_sh); \ |
| 379 | if(shift <= 31) \ |
| 380 | reg_sh = reg_sh << shift; \ |
| 381 | else \ |
| 382 | reg_sh = 0; \ |
| 383 | break; \ |
| 384 | } \ |
| 385 | \ |
| 386 | /* LSR imm */ \ |
| 387 | case 0x2: \ |
| 388 | { \ |
| 389 | u32 imm = (opcode >> 7) & 0x1F; \ |
| 390 | if(imm == 0) \ |
| 391 | reg_sh = 0; \ |
| 392 | else \ |
| 393 | reg_sh = reg[rm] >> imm; \ |
| 394 | break; \ |
| 395 | } \ |
| 396 | \ |
| 397 | /* LSR reg */ \ |
| 398 | case 0x3: \ |
| 399 | { \ |
| 400 | get_shift_register(reg_sh); \ |
| 401 | if(shift <= 31) \ |
| 402 | reg_sh = reg_sh >> shift; \ |
| 403 | else \ |
| 404 | reg_sh = 0; \ |
| 405 | break; \ |
| 406 | } \ |
| 407 | \ |
| 408 | /* ASR imm */ \ |
| 409 | case 0x4: \ |
| 410 | { \ |
| 411 | u32 imm = (opcode >> 7) & 0x1F; \ |
| 412 | reg_sh = reg[rm]; \ |
| 413 | \ |
| 414 | if(imm == 0) \ |
| 415 | reg_sh = (s32)reg_sh >> 31; \ |
| 416 | else \ |
| 417 | reg_sh = (s32)reg_sh >> imm; \ |
| 418 | break; \ |
| 419 | } \ |
| 420 | \ |
| 421 | /* ASR reg */ \ |
| 422 | case 0x5: \ |
| 423 | { \ |
| 424 | get_shift_register(reg_sh); \ |
| 425 | if(shift <= 31) \ |
| 426 | reg_sh = (s32)reg_sh >> shift; \ |
| 427 | else \ |
| 428 | reg_sh = (s32)reg_sh >> 31; \ |
| 429 | break; \ |
| 430 | } \ |
| 431 | \ |
| 432 | /* ROR imm */ \ |
| 433 | case 0x6: \ |
| 434 | { \ |
| 435 | u32 imm = (opcode >> 7) & 0x1F; \ |
| 436 | \ |
| 437 | if(imm == 0) \ |
| 438 | reg_sh = (reg[rm] >> 1) | (c_flag << 31); \ |
| 439 | else \ |
| 440 | ror(reg_sh, reg[rm], imm); \ |
| 441 | break; \ |
| 442 | } \ |
| 443 | \ |
| 444 | /* ROR reg */ \ |
| 445 | case 0x7: \ |
| 446 | { \ |
| 447 | get_shift_register(reg_sh); \ |
| 448 | ror(reg_sh, reg_sh, shift); \ |
| 449 | break; \ |
| 450 | } \ |
| 451 | } \ |
| 452 | |
| 453 | #define calculate_reg_sh_flags() \ |
| 454 | u32 reg_sh = 0; \ |
| 455 | switch((opcode >> 4) & 0x07) \ |
| 456 | { \ |
| 457 | /* LSL imm */ \ |
| 458 | case 0x0: \ |
| 459 | { \ |
| 460 | u32 imm = (opcode >> 7) & 0x1F; \ |
| 461 | reg_sh = reg[rm]; \ |
| 462 | \ |
| 463 | if(imm != 0) \ |
| 464 | { \ |
| 465 | c_flag = (reg_sh >> (32 - imm)) & 0x01; \ |
| 466 | reg_sh <<= imm; \ |
| 467 | } \ |
| 468 | \ |
| 469 | break; \ |
| 470 | } \ |
| 471 | \ |
| 472 | /* LSL reg */ \ |
| 473 | case 0x1: \ |
| 474 | { \ |
| 475 | get_shift_register(reg_sh); \ |
| 476 | if(shift != 0) \ |
| 477 | { \ |
| 478 | if(shift > 31) \ |
| 479 | { \ |
| 480 | if(shift == 32) \ |
| 481 | c_flag = reg_sh & 0x01; \ |
| 482 | else \ |
| 483 | c_flag = 0; \ |
| 484 | reg_sh = 0; \ |
| 485 | } \ |
| 486 | else \ |
| 487 | { \ |
| 488 | c_flag = (reg_sh >> (32 - shift)) & 0x01; \ |
| 489 | reg_sh <<= shift; \ |
| 490 | } \ |
| 491 | } \ |
| 492 | break; \ |
| 493 | } \ |
| 494 | \ |
| 495 | /* LSR imm */ \ |
| 496 | case 0x2: \ |
| 497 | { \ |
| 498 | u32 imm = (opcode >> 7) & 0x1F; \ |
| 499 | reg_sh = reg[rm]; \ |
| 500 | if(imm == 0) \ |
| 501 | { \ |
| 502 | c_flag = reg_sh >> 31; \ |
| 503 | reg_sh = 0; \ |
| 504 | } \ |
| 505 | else \ |
| 506 | { \ |
| 507 | c_flag = (reg_sh >> (imm - 1)) & 0x01; \ |
| 508 | reg_sh >>= imm; \ |
| 509 | } \ |
| 510 | break; \ |
| 511 | } \ |
| 512 | \ |
| 513 | /* LSR reg */ \ |
| 514 | case 0x3: \ |
| 515 | { \ |
| 516 | get_shift_register(reg_sh); \ |
| 517 | if(shift != 0) \ |
| 518 | { \ |
| 519 | if(shift > 31) \ |
| 520 | { \ |
| 521 | if(shift == 32) \ |
| 522 | c_flag = (reg_sh >> 31) & 0x01; \ |
| 523 | else \ |
| 524 | c_flag = 0; \ |
| 525 | reg_sh = 0; \ |
| 526 | } \ |
| 527 | else \ |
| 528 | { \ |
| 529 | c_flag = (reg_sh >> (shift - 1)) & 0x01; \ |
| 530 | reg_sh >>= shift; \ |
| 531 | } \ |
| 532 | } \ |
| 533 | break; \ |
| 534 | } \ |
| 535 | \ |
| 536 | /* ASR imm */ \ |
| 537 | case 0x4: \ |
| 538 | { \ |
| 539 | u32 imm = (opcode >> 7) & 0x1F; \ |
| 540 | reg_sh = reg[rm]; \ |
| 541 | if(imm == 0) \ |
| 542 | { \ |
| 543 | reg_sh = (s32)reg_sh >> 31; \ |
| 544 | c_flag = reg_sh & 0x01; \ |
| 545 | } \ |
| 546 | else \ |
| 547 | { \ |
| 548 | c_flag = (reg_sh >> (imm - 1)) & 0x01; \ |
| 549 | reg_sh = (s32)reg_sh >> imm; \ |
| 550 | } \ |
| 551 | break; \ |
| 552 | } \ |
| 553 | \ |
| 554 | /* ASR reg */ \ |
| 555 | case 0x5: \ |
| 556 | { \ |
| 557 | get_shift_register(reg_sh); \ |
| 558 | if(shift != 0) \ |
| 559 | { \ |
| 560 | if(shift > 31) \ |
| 561 | { \ |
| 562 | reg_sh = (s32)reg_sh >> 31; \ |
| 563 | c_flag = reg_sh & 0x01; \ |
| 564 | } \ |
| 565 | else \ |
| 566 | { \ |
| 567 | c_flag = (reg_sh >> (shift - 1)) & 0x01; \ |
| 568 | reg_sh = (s32)reg_sh >> shift; \ |
| 569 | } \ |
| 570 | } \ |
| 571 | break; \ |
| 572 | } \ |
| 573 | \ |
| 574 | /* ROR imm */ \ |
| 575 | case 0x6: \ |
| 576 | { \ |
| 577 | u32 imm = (opcode >> 7) & 0x1F; \ |
| 578 | reg_sh = reg[rm]; \ |
| 579 | if(imm == 0) \ |
| 580 | { \ |
| 581 | u32 old_c_flag = c_flag; \ |
| 582 | c_flag = reg_sh & 0x01; \ |
| 583 | reg_sh = (reg_sh >> 1) | (old_c_flag << 31); \ |
| 584 | } \ |
| 585 | else \ |
| 586 | { \ |
| 587 | c_flag = (reg_sh >> (imm - 1)) & 0x01; \ |
| 588 | ror(reg_sh, reg_sh, imm); \ |
| 589 | } \ |
| 590 | break; \ |
| 591 | } \ |
| 592 | \ |
| 593 | /* ROR reg */ \ |
| 594 | case 0x7: \ |
| 595 | { \ |
| 596 | get_shift_register(reg_sh); \ |
| 597 | if(shift != 0) \ |
| 598 | { \ |
| 599 | c_flag = (reg_sh >> (shift - 1)) & 0x01; \ |
| 600 | ror(reg_sh, reg_sh, shift); \ |
| 601 | } \ |
| 602 | break; \ |
| 603 | } \ |
| 604 | } \ |
| 605 | |
| 606 | #define calculate_reg_offset() \ |
| 607 | u32 reg_offset = 0; \ |
| 608 | switch((opcode >> 5) & 0x03) \ |
| 609 | { \ |
| 610 | /* LSL imm */ \ |
| 611 | case 0x0: \ |
| 612 | { \ |
| 613 | reg_offset = reg[rm] << ((opcode >> 7) & 0x1F); \ |
| 614 | break; \ |
| 615 | } \ |
| 616 | \ |
| 617 | /* LSR imm */ \ |
| 618 | case 0x1: \ |
| 619 | { \ |
| 620 | u32 imm = (opcode >> 7) & 0x1F; \ |
| 621 | if(imm == 0) \ |
| 622 | reg_offset = 0; \ |
| 623 | else \ |
| 624 | reg_offset = reg[rm] >> imm; \ |
| 625 | break; \ |
| 626 | } \ |
| 627 | \ |
| 628 | /* ASR imm */ \ |
| 629 | case 0x2: \ |
| 630 | { \ |
| 631 | u32 imm = (opcode >> 7) & 0x1F; \ |
| 632 | if(imm == 0) \ |
| 633 | reg_offset = (s32)reg[rm] >> 31; \ |
| 634 | else \ |
| 635 | reg_offset = (s32)reg[rm] >> imm; \ |
| 636 | break; \ |
| 637 | } \ |
| 638 | \ |
| 639 | /* ROR imm */ \ |
| 640 | case 0x3: \ |
| 641 | { \ |
| 642 | u32 imm = (opcode >> 7) & 0x1F; \ |
| 643 | if(imm == 0) \ |
| 644 | reg_offset = (reg[rm] >> 1) | (c_flag << 31); \ |
| 645 | else \ |
| 646 | ror(reg_offset, reg[rm], imm); \ |
| 647 | break; \ |
| 648 | } \ |
| 649 | } \ |
| 650 | |
| 651 | #define calculate_flags_add(dest, src_a, src_b) \ |
| 652 | calculate_z_flag(dest); \ |
| 653 | calculate_n_flag(dest); \ |
| 654 | calculate_c_flag_add(dest, src_a, src_b); \ |
| 655 | calculate_v_flag_add(dest, src_a, src_b) \ |
| 656 | |
| 657 | #define calculate_flags_sub(dest, src_a, src_b) \ |
| 658 | calculate_z_flag(dest); \ |
| 659 | calculate_n_flag(dest); \ |
| 660 | calculate_c_flag_sub(dest, src_a, src_b); \ |
| 661 | calculate_v_flag_sub(dest, src_a, src_b) \ |
| 662 | |
| 663 | #define calculate_flags_logic(dest) \ |
| 664 | calculate_z_flag(dest); \ |
| 665 | calculate_n_flag(dest) \ |
| 666 | |
| 667 | #define extract_flags() \ |
| 668 | n_flag = reg[REG_CPSR] >> 31; \ |
| 669 | z_flag = (reg[REG_CPSR] >> 30) & 0x01; \ |
| 670 | c_flag = (reg[REG_CPSR] >> 29) & 0x01; \ |
| 671 | v_flag = (reg[REG_CPSR] >> 28) & 0x01; \ |
| 672 | |
| 673 | #define collapse_flags() \ |
| 674 | reg[REG_CPSR] = (n_flag << 31) | (z_flag << 30) | (c_flag << 29) | \ |
| 675 | (v_flag << 28) | (reg[REG_CPSR] & 0xFF) \ |
| 676 | |
| 677 | #define memory_region(r_dest, l_dest, address) \ |
| 678 | r_dest = memory_regions[address >> 24]; \ |
| 679 | l_dest = memory_limits[address >> 24] \ |
| 680 | |
| 681 | |
| 682 | #define pc_region() \ |
| 683 | memory_region(pc_region, pc_limit, pc) \ |
| 684 | |
| 685 | #define check_pc_region() \ |
| 686 | new_pc_region = (pc >> 15); \ |
| 687 | if(new_pc_region != pc_region) \ |
| 688 | { \ |
| 689 | pc_region = new_pc_region; \ |
| 690 | pc_address_block = memory_map_read[new_pc_region]; \ |
| 691 | \ |
| 692 | if(pc_address_block == NULL) \ |
| 693 | pc_address_block = load_gamepak_page(pc_region & 0x3FF); \ |
| 694 | } \ |
| 695 | |
| 696 | u32 branch_targets = 0; |
| 697 | u32 high_frequency_branch_targets = 0; |
| 698 | |
| 699 | #define BRANCH_ACTIVITY_THRESHOLD 50 |
| 700 | |
| 701 | #define arm_update_pc() \ |
| 702 | pc = reg[REG_PC] \ |
| 703 | |
| 704 | #define arm_pc_offset(val) \ |
| 705 | pc += val; \ |
| 706 | reg[REG_PC] = pc \ |
| 707 | |
| 708 | #define arm_pc_offset_update(val) \ |
| 709 | pc += val; \ |
| 710 | reg[REG_PC] = pc \ |
| 711 | |
| 712 | #define arm_pc_offset_update_direct(val) \ |
| 713 | pc = val; \ |
| 714 | reg[REG_PC] = pc \ |
| 715 | |
| 716 | |
| 717 | // It should be okay to still generate result flags, spsr will overwrite them. |
| 718 | // This is pretty infrequent (returning from interrupt handlers, et al) so |
| 719 | // probably not worth optimizing for. |
| 720 | |
| 721 | #define check_for_interrupts() \ |
| 722 | if((io_registers[REG_IE] & io_registers[REG_IF]) && \ |
| 723 | io_registers[REG_IME] && ((reg[REG_CPSR] & 0x80) == 0)) \ |
| 724 | { \ |
| 725 | reg_mode[MODE_IRQ][6] = reg[REG_PC] + 4; \ |
| 726 | spsr[MODE_IRQ] = reg[REG_CPSR]; \ |
| 727 | reg[REG_CPSR] = 0xD2; \ |
| 728 | reg[REG_PC] = 0x00000018; \ |
| 729 | arm_update_pc(); \ |
| 730 | set_cpu_mode(MODE_IRQ); \ |
| 731 | goto arm_loop; \ |
| 732 | } \ |
| 733 | |
| 734 | #define arm_spsr_restore() \ |
| 735 | if(rd == 15) \ |
| 736 | { \ |
| 737 | if(reg[CPU_MODE] != MODE_USER) \ |
| 738 | { \ |
| 739 | reg[REG_CPSR] = spsr[reg[CPU_MODE]]; \ |
| 740 | extract_flags(); \ |
| 741 | set_cpu_mode(cpu_modes[reg[REG_CPSR] & 0x1F]); \ |
| 742 | check_for_interrupts(); \ |
| 743 | } \ |
| 744 | arm_update_pc(); \ |
| 745 | \ |
| 746 | if(reg[REG_CPSR] & 0x20) \ |
| 747 | goto thumb_loop; \ |
| 748 | } \ |
| 749 | |
| 750 | #define arm_data_proc_flags_reg() \ |
| 751 | arm_decode_data_proc_reg(); \ |
| 752 | calculate_reg_sh_flags() \ |
| 753 | |
| 754 | #define arm_data_proc_reg() \ |
| 755 | arm_decode_data_proc_reg(); \ |
| 756 | calculate_reg_sh() \ |
| 757 | |
| 758 | #define arm_data_proc_flags_imm() \ |
| 759 | arm_decode_data_proc_imm() \ |
| 760 | |
| 761 | #define arm_data_proc_imm() \ |
| 762 | arm_decode_data_proc_imm() \ |
| 763 | |
| 764 | #define arm_data_proc(expr, type) \ |
| 765 | { \ |
| 766 | u32 dest; \ |
| 767 | arm_pc_offset(8); \ |
| 768 | arm_data_proc_##type(); \ |
| 769 | dest = expr; \ |
| 770 | arm_pc_offset(-4); \ |
| 771 | reg[rd] = dest; \ |
| 772 | \ |
| 773 | if(rd == 15) \ |
| 774 | { \ |
| 775 | arm_update_pc(); \ |
| 776 | } \ |
| 777 | } \ |
| 778 | |
| 779 | #define flags_vars(src_a, src_b) \ |
| 780 | u32 dest; \ |
| 781 | const u32 _sa = src_a; \ |
| 782 | const u32 _sb = src_b \ |
| 783 | |
| 784 | #define arm_data_proc_logic_flags(expr, type) \ |
| 785 | { \ |
| 786 | arm_pc_offset(8); \ |
| 787 | arm_data_proc_flags_##type(); \ |
| 788 | u32 dest = expr; \ |
| 789 | calculate_flags_logic(dest); \ |
| 790 | arm_pc_offset(-4); \ |
| 791 | reg[rd] = dest; \ |
| 792 | arm_spsr_restore(); \ |
| 793 | } \ |
| 794 | |
| 795 | #define arm_data_proc_add_flags(src_a, src_b, type) \ |
| 796 | { \ |
| 797 | arm_pc_offset(8); \ |
| 798 | arm_data_proc_##type(); \ |
| 799 | flags_vars(src_a, src_b); \ |
| 800 | dest = _sa + _sb; \ |
| 801 | calculate_flags_add(dest, _sa, _sb); \ |
| 802 | arm_pc_offset(-4); \ |
| 803 | reg[rd] = dest; \ |
| 804 | arm_spsr_restore(); \ |
| 805 | } |
| 806 | |
| 807 | #define arm_data_proc_sub_flags(src_a, src_b, type) \ |
| 808 | { \ |
| 809 | arm_pc_offset(8); \ |
| 810 | arm_data_proc_##type(); \ |
| 811 | flags_vars(src_a, src_b); \ |
| 812 | dest = _sa - _sb; \ |
| 813 | calculate_flags_sub(dest, _sa, _sb); \ |
| 814 | arm_pc_offset(-4); \ |
| 815 | reg[rd] = dest; \ |
| 816 | arm_spsr_restore(); \ |
| 817 | } \ |
| 818 | |
| 819 | #define arm_data_proc_test_logic(expr, type) \ |
| 820 | { \ |
| 821 | arm_pc_offset(8); \ |
| 822 | arm_data_proc_flags_##type(); \ |
| 823 | u32 dest = expr; \ |
| 824 | calculate_flags_logic(dest); \ |
| 825 | arm_pc_offset(-4); \ |
| 826 | } \ |
| 827 | |
| 828 | #define arm_data_proc_test_add(src_a, src_b, type) \ |
| 829 | { \ |
| 830 | arm_pc_offset(8); \ |
| 831 | arm_data_proc_##type(); \ |
| 832 | flags_vars(src_a, src_b); \ |
| 833 | dest = _sa + _sb; \ |
| 834 | calculate_flags_add(dest, _sa, _sb); \ |
| 835 | arm_pc_offset(-4); \ |
| 836 | } \ |
| 837 | |
| 838 | #define arm_data_proc_test_sub(src_a, src_b, type) \ |
| 839 | { \ |
| 840 | arm_pc_offset(8); \ |
| 841 | arm_data_proc_##type(); \ |
| 842 | flags_vars(src_a, src_b); \ |
| 843 | dest = _sa - _sb; \ |
| 844 | calculate_flags_sub(dest, _sa, _sb); \ |
| 845 | arm_pc_offset(-4); \ |
| 846 | } \ |
| 847 | |
| 848 | #define arm_multiply_flags_yes(_dest) \ |
| 849 | calculate_z_flag(_dest); \ |
| 850 | calculate_n_flag(_dest); \ |
| 851 | |
| 852 | #define arm_multiply_flags_no(_dest) \ |
| 853 | |
| 854 | #define arm_multiply_long_flags_yes(_dest_lo, _dest_hi) \ |
| 855 | z_flag = (_dest_lo == 0) & (_dest_hi == 0); \ |
| 856 | calculate_n_flag(_dest_hi) \ |
| 857 | |
| 858 | #define arm_multiply_long_flags_no(_dest_lo, _dest_hi) \ |
| 859 | |
| 860 | #define arm_multiply(add_op, flags) \ |
| 861 | { \ |
| 862 | u32 dest; \ |
| 863 | arm_decode_multiply(); \ |
| 864 | dest = (reg[rm] * reg[rs]) add_op; \ |
| 865 | arm_multiply_flags_##flags(dest); \ |
| 866 | reg[rd] = dest; \ |
| 867 | arm_pc_offset(4); \ |
| 868 | } \ |
| 869 | |
| 870 | #define arm_multiply_long_addop(type) \ |
| 871 | + ((type##64)((((type##64)reg[rdhi]) << 32) | reg[rdlo])); \ |
| 872 | |
| 873 | #define arm_multiply_long(add_op, flags, type) \ |
| 874 | { \ |
| 875 | type##64 dest; \ |
| 876 | u32 dest_lo; \ |
| 877 | u32 dest_hi; \ |
| 878 | arm_decode_multiply_long(); \ |
| 879 | dest = ((type##64)((type##32)reg[rm]) * \ |
| 880 | (type##64)((type##32)reg[rn])) add_op; \ |
| 881 | dest_lo = (u32)dest; \ |
| 882 | dest_hi = (u32)(dest >> 32); \ |
| 883 | arm_multiply_long_flags_##flags(dest_lo, dest_hi); \ |
| 884 | reg[rdlo] = dest_lo; \ |
| 885 | reg[rdhi] = dest_hi; \ |
| 886 | arm_pc_offset(4); \ |
| 887 | } \ |
| 888 | |
| 889 | const u32 psr_masks[16] = |
| 890 | { |
| 891 | 0x00000000, 0x000000FF, 0x0000FF00, 0x0000FFFF, 0x00FF0000, |
| 892 | 0x00FF00FF, 0x00FFFF00, 0x00FFFFFF, 0xFF000000, 0xFF0000FF, |
| 893 | 0xFF00FF00, 0xFF00FFFF, 0xFFFF0000, 0xFFFF00FF, 0xFFFFFF00, |
| 894 | 0xFFFFFFFF |
| 895 | }; |
| 896 | |
| 897 | #define arm_psr_read(dummy, psr_reg) \ |
| 898 | collapse_flags(); \ |
| 899 | reg[rd] = psr_reg \ |
| 900 | |
| 901 | #define arm_psr_store_cpsr(source) \ |
| 902 | reg[REG_CPSR] = (source & store_mask) | (reg[REG_CPSR] & (~store_mask)); \ |
| 903 | extract_flags(); \ |
| 904 | if(store_mask & 0xFF) \ |
| 905 | { \ |
| 906 | set_cpu_mode(cpu_modes[reg[REG_CPSR] & 0x1F]); \ |
| 907 | check_for_interrupts(); \ |
| 908 | } \ |
| 909 | |
| 910 | #define arm_psr_store_spsr(source) \ |
| 911 | u32 _psr = spsr[reg[CPU_MODE]]; \ |
| 912 | spsr[reg[CPU_MODE]] = (source & store_mask) | (_psr & (~store_mask)) \ |
| 913 | |
| 914 | #define arm_psr_store(source, psr_reg) \ |
| 915 | const u32 store_mask = psr_masks[psr_field]; \ |
| 916 | arm_psr_store_##psr_reg(source) \ |
| 917 | |
| 918 | #define arm_psr_src_reg reg[rm] |
| 919 | |
| 920 | #define arm_psr_src_imm imm |
| 921 | |
| 922 | #define arm_psr(op_type, transfer_type, psr_reg) \ |
| 923 | { \ |
| 924 | arm_decode_psr_##op_type(); \ |
| 925 | arm_pc_offset(4); \ |
| 926 | arm_psr_##transfer_type(arm_psr_src_##op_type, psr_reg); \ |
| 927 | } \ |
| 928 | |
| 929 | #define arm_data_trans_reg() \ |
| 930 | arm_decode_data_trans_reg(); \ |
| 931 | calculate_reg_offset() \ |
| 932 | |
| 933 | #define arm_data_trans_imm() \ |
| 934 | arm_decode_data_trans_imm() \ |
| 935 | |
| 936 | #define arm_data_trans_half_reg() \ |
| 937 | arm_decode_half_trans_r() \ |
| 938 | |
| 939 | #define arm_data_trans_half_imm() \ |
| 940 | arm_decode_half_trans_of() \ |
| 941 | |
| 942 | #define aligned_address_mask8 0xF0000000 |
| 943 | #define aligned_address_mask16 0xF0000001 |
| 944 | #define aligned_address_mask32 0xF0000003 |
| 945 | |
| 946 | #define fast_read_memory(size, type, address, dest) \ |
| 947 | { \ |
| 948 | u8 *map; \ |
| 949 | u32 _address = address; \ |
| 950 | \ |
| 951 | if(_address < 0x10000000) \ |
| 952 | { \ |
| 953 | memory_region_access_read_##type[_address >> 24]++; \ |
| 954 | memory_reads_##type++; \ |
| 955 | } \ |
| 956 | if(((_address >> 24) == 0) && (pc >= 0x4000)) \ |
| 957 | { \ |
| 958 | dest = *((type *)((u8 *)&bios_read_protect + (_address & 0x03))); \ |
| 959 | } \ |
| 960 | else \ |
| 961 | \ |
| 962 | if(((_address & aligned_address_mask##size) == 0) && \ |
| 963 | (map = memory_map_read[_address >> 15])) \ |
| 964 | { \ |
| 965 | dest = *((type *)((u8 *)map + (_address & 0x7FFF))); \ |
| 966 | } \ |
| 967 | else \ |
| 968 | { \ |
| 969 | dest = (type)read_memory##size(_address); \ |
| 970 | } \ |
| 971 | } \ |
| 972 | |
| 973 | #define fast_read_memory_s16(address, dest) \ |
| 974 | { \ |
| 975 | u8 *map; \ |
| 976 | u32 _address = address; \ |
| 977 | if(_address < 0x10000000) \ |
| 978 | { \ |
| 979 | memory_region_access_read_s16[_address >> 24]++; \ |
| 980 | memory_reads_s16++; \ |
| 981 | } \ |
| 982 | if(((_address & aligned_address_mask16) == 0) && \ |
| 983 | (map = memory_map_read[_address >> 15])) \ |
| 984 | { \ |
| 985 | dest = *((s16 *)((u8 *)map + (_address & 0x7FFF))); \ |
| 986 | } \ |
| 987 | else \ |
| 988 | { \ |
| 989 | dest = (s16)read_memory16_signed(_address); \ |
| 990 | } \ |
| 991 | } \ |
| 992 | |
| 993 | |
| 994 | #define fast_write_memory(size, type, address, value) \ |
| 995 | { \ |
| 996 | u8 *map; \ |
| 997 | u32 _address = (address) & ~(aligned_address_mask##size & 0x03); \ |
| 998 | if(_address < 0x10000000) \ |
| 999 | { \ |
| 1000 | memory_region_access_write_##type[_address >> 24]++; \ |
| 1001 | memory_writes_##type++; \ |
| 1002 | } \ |
| 1003 | \ |
| 1004 | if(((_address & aligned_address_mask##size) == 0) && \ |
| 1005 | (map = memory_map_write[_address >> 15])) \ |
| 1006 | { \ |
| 1007 | *((type *)((u8 *)map + (_address & 0x7FFF))) = value; \ |
| 1008 | } \ |
| 1009 | else \ |
| 1010 | { \ |
| 1011 | cpu_alert = write_memory##size(_address, value); \ |
| 1012 | if(cpu_alert) \ |
| 1013 | goto alert; \ |
| 1014 | } \ |
| 1015 | } \ |
| 1016 | |
| 1017 | #define load_aligned32(address, dest) \ |
| 1018 | { \ |
| 1019 | u32 _address = address; \ |
| 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 | u32 _address = address; \ |
| 1039 | u8 *map = memory_map_write[_address >> 15]; \ |
| 1040 | if(_address < 0x10000000) \ |
| 1041 | { \ |
| 1042 | memory_region_access_write_u32[_address >> 24]++; \ |
| 1043 | memory_writes_u32++; \ |
| 1044 | } \ |
| 1045 | if(map) \ |
| 1046 | { \ |
| 1047 | address32(map, _address & 0x7FFF) = value; \ |
| 1048 | } \ |
| 1049 | else \ |
| 1050 | { \ |
| 1051 | cpu_alert = write_memory32(_address, value); \ |
| 1052 | if(cpu_alert) \ |
| 1053 | goto alert; \ |
| 1054 | } \ |
| 1055 | } \ |
| 1056 | |
| 1057 | #define load_memory_u8(address, dest) \ |
| 1058 | fast_read_memory(8, u8, address, dest) \ |
| 1059 | |
| 1060 | #define load_memory_u16(address, dest) \ |
| 1061 | fast_read_memory(16, u16, address, dest) \ |
| 1062 | |
| 1063 | #define load_memory_u32(address, dest) \ |
| 1064 | fast_read_memory(32, u32, address, dest) \ |
| 1065 | |
| 1066 | #define load_memory_s8(address, dest) \ |
| 1067 | fast_read_memory(8, s8, address, dest) \ |
| 1068 | |
| 1069 | #define load_memory_s16(address, dest) \ |
| 1070 | fast_read_memory_s16(address, dest) \ |
| 1071 | |
| 1072 | #define store_memory_u8(address, value) \ |
| 1073 | fast_write_memory(8, u8, address, value) \ |
| 1074 | |
| 1075 | #define store_memory_u16(address, value) \ |
| 1076 | fast_write_memory(16, u16, address, value) \ |
| 1077 | |
| 1078 | #define store_memory_u32(address, value) \ |
| 1079 | fast_write_memory(32, u32, address, value) \ |
| 1080 | |
| 1081 | #define no_op \ |
| 1082 | |
| 1083 | #define arm_access_memory_writeback_yes(off_op) \ |
| 1084 | reg[rn] = address off_op \ |
| 1085 | |
| 1086 | #define arm_access_memory_writeback_no(off_op) \ |
| 1087 | |
| 1088 | #define arm_access_memory_pc_preadjust_load() \ |
| 1089 | |
| 1090 | #define arm_access_memory_pc_preadjust_store() \ |
| 1091 | u32 reg_op = reg[rd]; \ |
| 1092 | if(rd == 15) \ |
| 1093 | reg_op += 4 \ |
| 1094 | |
| 1095 | #define arm_access_memory_pc_postadjust_load() \ |
| 1096 | arm_update_pc() \ |
| 1097 | |
| 1098 | #define arm_access_memory_pc_postadjust_store() \ |
| 1099 | |
| 1100 | #define load_reg_op reg[rd] \ |
| 1101 | |
| 1102 | #define store_reg_op reg_op \ |
| 1103 | |
| 1104 | #define arm_access_memory(access_type, off_op, off_type, mem_type, \ |
| 1105 | wb, wb_off_op) \ |
| 1106 | { \ |
| 1107 | arm_pc_offset(8); \ |
| 1108 | arm_data_trans_##off_type(); \ |
| 1109 | u32 address = reg[rn] off_op; \ |
| 1110 | arm_access_memory_pc_preadjust_##access_type(); \ |
| 1111 | \ |
| 1112 | arm_pc_offset(-4); \ |
| 1113 | arm_access_memory_writeback_##wb(wb_off_op); \ |
| 1114 | access_type##_memory_##mem_type(address, access_type##_reg_op); \ |
| 1115 | arm_access_memory_pc_postadjust_##access_type(); \ |
| 1116 | } \ |
| 1117 | |
| 1118 | #define word_bit_count(word) \ |
| 1119 | (bit_count[word >> 8] + bit_count[word & 0xFF]) \ |
| 1120 | |
| 1121 | #define sprint_no(access_type, offset_type, writeback_type) \ |
| 1122 | |
| 1123 | #define sprint_yes(access_type, offset_type, writeback_type) \ |
| 1124 | printf("sbit on %s %s %s\n", #access_type, #offset_type, #writeback_type) \ |
| 1125 | |
| 1126 | #define arm_block_writeback_load() \ |
| 1127 | if(!((reg_list >> rn) & 0x01)) \ |
| 1128 | { \ |
| 1129 | reg[rn] = address; \ |
| 1130 | } \ |
| 1131 | |
| 1132 | #define arm_block_writeback_store() \ |
| 1133 | reg[rn] = address \ |
| 1134 | |
| 1135 | #define arm_block_writeback_yes(access_type) \ |
| 1136 | arm_block_writeback_##access_type() \ |
| 1137 | |
| 1138 | #define arm_block_writeback_no(access_type) \ |
| 1139 | |
| 1140 | #define load_block_memory(address, dest) \ |
| 1141 | dest = address32(address_region, (address + offset) & 0x7FFF) \ |
| 1142 | |
| 1143 | #define store_block_memory(address, dest) \ |
| 1144 | address32(address_region, (address + offset) & 0x7FFF) = dest \ |
| 1145 | |
| 1146 | #define arm_block_memory_offset_down_a() \ |
| 1147 | (base - (word_bit_count(reg_list) * 4) + 4) \ |
| 1148 | |
| 1149 | #define arm_block_memory_offset_down_b() \ |
| 1150 | (base - (word_bit_count(reg_list) * 4)) \ |
| 1151 | |
| 1152 | #define arm_block_memory_offset_no() \ |
| 1153 | (base) \ |
| 1154 | |
| 1155 | #define arm_block_memory_offset_up() \ |
| 1156 | (base + 4) \ |
| 1157 | |
| 1158 | #define arm_block_memory_writeback_down() \ |
| 1159 | reg[rn] = base - (word_bit_count(reg_list) * 4) \ |
| 1160 | |
| 1161 | #define arm_block_memory_writeback_up() \ |
| 1162 | reg[rn] = base + (word_bit_count(reg_list) * 4) \ |
| 1163 | |
| 1164 | #define arm_block_memory_writeback_no() \ |
| 1165 | |
| 1166 | #define arm_block_memory_load_pc() \ |
| 1167 | load_aligned32(address, pc); \ |
| 1168 | reg[REG_PC] = pc \ |
| 1169 | |
| 1170 | #define arm_block_memory_store_pc() \ |
| 1171 | store_aligned32(address, pc + 4) \ |
| 1172 | |
| 1173 | #define arm_block_memory(access_type, offset_type, writeback_type, s_bit) \ |
| 1174 | { \ |
| 1175 | arm_decode_block_trans(); \ |
| 1176 | u32 base = reg[rn]; \ |
| 1177 | u32 address = arm_block_memory_offset_##offset_type() & 0xFFFFFFFC; \ |
| 1178 | u32 i; \ |
| 1179 | \ |
| 1180 | arm_block_memory_writeback_##writeback_type(); \ |
| 1181 | \ |
| 1182 | for(i = 0; i < 15; i++) \ |
| 1183 | { \ |
| 1184 | if((reg_list >> i) & 0x01) \ |
| 1185 | { \ |
| 1186 | access_type##_aligned32(address, reg[i]); \ |
| 1187 | address += 4; \ |
| 1188 | } \ |
| 1189 | } \ |
| 1190 | \ |
| 1191 | arm_pc_offset(4); \ |
| 1192 | if(reg_list & 0x8000) \ |
| 1193 | { \ |
| 1194 | arm_block_memory_##access_type##_pc(); \ |
| 1195 | } \ |
| 1196 | } \ |
| 1197 | |
| 1198 | #define arm_swap(type) \ |
| 1199 | { \ |
| 1200 | arm_decode_swap(); \ |
| 1201 | u32 temp; \ |
| 1202 | load_memory_##type(reg[rn], temp); \ |
| 1203 | store_memory_##type(reg[rn], reg[rm]); \ |
| 1204 | reg[rd] = temp; \ |
| 1205 | arm_pc_offset(4); \ |
| 1206 | } \ |
| 1207 | |
| 1208 | #define arm_next_instruction() \ |
| 1209 | { \ |
| 1210 | arm_pc_offset(4); \ |
| 1211 | goto skip_instruction; \ |
| 1212 | } \ |
| 1213 | |
| 1214 | #define thumb_update_pc() \ |
| 1215 | pc = reg[REG_PC] \ |
| 1216 | |
| 1217 | #define thumb_pc_offset(val) \ |
| 1218 | pc += val; \ |
| 1219 | reg[REG_PC] = pc \ |
| 1220 | |
| 1221 | #define thumb_pc_offset_update(val) \ |
| 1222 | pc += val; \ |
| 1223 | reg[REG_PC] = pc \ |
| 1224 | |
| 1225 | #define thumb_pc_offset_update_direct(val) \ |
| 1226 | pc = val; \ |
| 1227 | reg[REG_PC] = pc \ |
| 1228 | |
| 1229 | // Types: add_sub, add_sub_imm, alu_op, imm |
| 1230 | // Affects N/Z/C/V flags |
| 1231 | |
| 1232 | #define thumb_add(type, dest_reg, src_a, src_b) \ |
| 1233 | { \ |
| 1234 | thumb_decode_##type(); \ |
| 1235 | const u32 _sa = src_a; \ |
| 1236 | const u32 _sb = src_b; \ |
| 1237 | u32 dest = _sa + _sb; \ |
| 1238 | calculate_flags_add(dest, _sa, _sb); \ |
| 1239 | reg[dest_reg] = dest; \ |
| 1240 | thumb_pc_offset(2); \ |
| 1241 | } \ |
| 1242 | |
| 1243 | #define thumb_add_noflags(type, dest_reg, src_a, src_b) \ |
| 1244 | { \ |
| 1245 | thumb_decode_##type(); \ |
| 1246 | u32 dest = (src_a) + (src_b); \ |
| 1247 | reg[dest_reg] = dest; \ |
| 1248 | thumb_pc_offset(2); \ |
| 1249 | } \ |
| 1250 | |
| 1251 | #define thumb_sub(type, dest_reg, src_a, src_b) \ |
| 1252 | { \ |
| 1253 | thumb_decode_##type(); \ |
| 1254 | const u32 _sa = src_a; \ |
| 1255 | const u32 _sb = src_b; \ |
| 1256 | u32 dest = _sa - _sb; \ |
| 1257 | calculate_flags_sub(dest, _sa, _sb); \ |
| 1258 | reg[dest_reg] = dest; \ |
| 1259 | thumb_pc_offset(2); \ |
| 1260 | } \ |
| 1261 | |
| 1262 | // Affects N/Z flags |
| 1263 | |
| 1264 | #define thumb_logic(type, dest_reg, expr) \ |
| 1265 | { \ |
| 1266 | thumb_decode_##type(); \ |
| 1267 | u32 dest = expr; \ |
| 1268 | calculate_flags_logic(dest); \ |
| 1269 | reg[dest_reg] = dest; \ |
| 1270 | thumb_pc_offset(2); \ |
| 1271 | } \ |
| 1272 | |
| 1273 | // Decode types: shift, alu_op |
| 1274 | // Operation types: lsl, lsr, asr, ror |
| 1275 | // Affects N/Z/C flags |
| 1276 | |
| 1277 | #define thumb_shift_lsl_reg() \ |
| 1278 | u32 shift = reg[rs]; \ |
| 1279 | u32 dest = reg[rd]; \ |
| 1280 | if(shift != 0) \ |
| 1281 | { \ |
| 1282 | if(shift > 31) \ |
| 1283 | { \ |
| 1284 | if(shift == 32) \ |
| 1285 | c_flag = dest & 0x01; \ |
| 1286 | else \ |
| 1287 | c_flag = 0; \ |
| 1288 | dest = 0; \ |
| 1289 | } \ |
| 1290 | else \ |
| 1291 | { \ |
| 1292 | c_flag = (dest >> (32 - shift)) & 0x01; \ |
| 1293 | dest <<= shift; \ |
| 1294 | } \ |
| 1295 | } \ |
| 1296 | |
| 1297 | #define thumb_shift_lsr_reg() \ |
| 1298 | u32 shift = reg[rs]; \ |
| 1299 | u32 dest = reg[rd]; \ |
| 1300 | if(shift != 0) \ |
| 1301 | { \ |
| 1302 | if(shift > 31) \ |
| 1303 | { \ |
| 1304 | if(shift == 32) \ |
| 1305 | c_flag = dest >> 31; \ |
| 1306 | else \ |
| 1307 | c_flag = 0; \ |
| 1308 | dest = 0; \ |
| 1309 | } \ |
| 1310 | else \ |
| 1311 | { \ |
| 1312 | c_flag = (dest >> (shift - 1)) & 0x01; \ |
| 1313 | dest >>= shift; \ |
| 1314 | } \ |
| 1315 | } \ |
| 1316 | |
| 1317 | #define thumb_shift_asr_reg() \ |
| 1318 | u32 shift = reg[rs]; \ |
| 1319 | u32 dest = reg[rd]; \ |
| 1320 | if(shift != 0) \ |
| 1321 | { \ |
| 1322 | if(shift > 31) \ |
| 1323 | { \ |
| 1324 | dest = (s32)dest >> 31; \ |
| 1325 | c_flag = dest & 0x01; \ |
| 1326 | } \ |
| 1327 | else \ |
| 1328 | { \ |
| 1329 | c_flag = (dest >> (shift - 1)) & 0x01; \ |
| 1330 | dest = (s32)dest >> shift; \ |
| 1331 | } \ |
| 1332 | } \ |
| 1333 | |
| 1334 | #define thumb_shift_ror_reg() \ |
| 1335 | u32 shift = reg[rs]; \ |
| 1336 | u32 dest = reg[rd]; \ |
| 1337 | if(shift != 0) \ |
| 1338 | { \ |
| 1339 | c_flag = (dest >> (shift - 1)) & 0x01; \ |
| 1340 | ror(dest, dest, shift); \ |
| 1341 | } \ |
| 1342 | |
| 1343 | #define thumb_shift_lsl_imm() \ |
| 1344 | u32 dest = reg[rs]; \ |
| 1345 | if(imm != 0) \ |
| 1346 | { \ |
| 1347 | c_flag = (dest >> (32 - imm)) & 0x01; \ |
| 1348 | dest <<= imm; \ |
| 1349 | } \ |
| 1350 | |
| 1351 | #define thumb_shift_lsr_imm() \ |
| 1352 | u32 dest; \ |
| 1353 | if(imm == 0) \ |
| 1354 | { \ |
| 1355 | dest = 0; \ |
| 1356 | c_flag = reg[rs] >> 31; \ |
| 1357 | } \ |
| 1358 | else \ |
| 1359 | { \ |
| 1360 | dest = reg[rs]; \ |
| 1361 | c_flag = (dest >> (imm - 1)) & 0x01; \ |
| 1362 | dest >>= imm; \ |
| 1363 | } \ |
| 1364 | |
| 1365 | #define thumb_shift_asr_imm() \ |
| 1366 | u32 dest; \ |
| 1367 | if(imm == 0) \ |
| 1368 | { \ |
| 1369 | dest = (s32)reg[rs] >> 31; \ |
| 1370 | c_flag = dest & 0x01; \ |
| 1371 | } \ |
| 1372 | else \ |
| 1373 | { \ |
| 1374 | dest = reg[rs]; \ |
| 1375 | c_flag = (dest >> (imm - 1)) & 0x01; \ |
| 1376 | dest = (s32)dest >> imm; \ |
| 1377 | } \ |
| 1378 | |
| 1379 | #define thumb_shift_ror_imm() \ |
| 1380 | u32 dest = reg[rs]; \ |
| 1381 | if(imm == 0) \ |
| 1382 | { \ |
| 1383 | u32 old_c_flag = c_flag; \ |
| 1384 | c_flag = dest & 0x01; \ |
| 1385 | dest = (dest >> 1) | (old_c_flag << 31); \ |
| 1386 | } \ |
| 1387 | else \ |
| 1388 | { \ |
| 1389 | c_flag = (dest >> (imm - 1)) & 0x01; \ |
| 1390 | ror(dest, dest, imm); \ |
| 1391 | } \ |
| 1392 | |
| 1393 | #define thumb_shift(decode_type, op_type, value_type) \ |
| 1394 | { \ |
| 1395 | thumb_decode_##decode_type(); \ |
| 1396 | thumb_shift_##op_type##_##value_type(); \ |
| 1397 | calculate_flags_logic(dest); \ |
| 1398 | reg[rd] = dest; \ |
| 1399 | thumb_pc_offset(2); \ |
| 1400 | } \ |
| 1401 | |
| 1402 | #define thumb_test_add(type, src_a, src_b) \ |
| 1403 | { \ |
| 1404 | thumb_decode_##type(); \ |
| 1405 | const u32 _sa = src_a; \ |
| 1406 | const u32 _sb = src_b; \ |
| 1407 | u32 dest = _sa + _sb; \ |
| 1408 | calculate_flags_add(dest, src_a, src_b); \ |
| 1409 | thumb_pc_offset(2); \ |
| 1410 | } \ |
| 1411 | |
| 1412 | #define thumb_test_sub(type, src_a, src_b) \ |
| 1413 | { \ |
| 1414 | thumb_decode_##type(); \ |
| 1415 | const u32 _sa = src_a; \ |
| 1416 | const u32 _sb = src_b; \ |
| 1417 | u32 dest = _sa - _sb; \ |
| 1418 | calculate_flags_sub(dest, src_a, src_b); \ |
| 1419 | thumb_pc_offset(2); \ |
| 1420 | } \ |
| 1421 | |
| 1422 | #define thumb_test_logic(type, expr) \ |
| 1423 | { \ |
| 1424 | thumb_decode_##type(); \ |
| 1425 | u32 dest = expr; \ |
| 1426 | calculate_flags_logic(dest); \ |
| 1427 | thumb_pc_offset(2); \ |
| 1428 | } |
| 1429 | |
| 1430 | #define thumb_hireg_op(expr) \ |
| 1431 | { \ |
| 1432 | thumb_pc_offset(4); \ |
| 1433 | thumb_decode_hireg_op(); \ |
| 1434 | u32 dest = expr; \ |
| 1435 | thumb_pc_offset(-2); \ |
| 1436 | if(rd == 15) \ |
| 1437 | { \ |
| 1438 | reg[REG_PC] = dest & ~0x01; \ |
| 1439 | thumb_update_pc(); \ |
| 1440 | } \ |
| 1441 | else \ |
| 1442 | { \ |
| 1443 | reg[rd] = dest; \ |
| 1444 | } \ |
| 1445 | } \ |
| 1446 | |
| 1447 | // Operation types: imm, mem_reg, mem_imm |
| 1448 | |
| 1449 | #define thumb_access_memory(access_type, op_type, address, reg_op, \ |
| 1450 | mem_type) \ |
| 1451 | { \ |
| 1452 | thumb_decode_##op_type(); \ |
| 1453 | access_type##_memory_##mem_type(address, reg_op); \ |
| 1454 | thumb_pc_offset(2); \ |
| 1455 | } \ |
| 1456 | |
| 1457 | #define thumb_block_address_preadjust_no_op() \ |
| 1458 | |
| 1459 | #define thumb_block_address_preadjust_up() \ |
| 1460 | address += bit_count[reg_list] * 4 \ |
| 1461 | |
| 1462 | #define thumb_block_address_preadjust_down() \ |
| 1463 | address -= bit_count[reg_list] * 4 \ |
| 1464 | |
| 1465 | #define thumb_block_address_preadjust_push_lr() \ |
| 1466 | address -= (bit_count[reg_list] + 1) * 4 \ |
| 1467 | |
| 1468 | #define thumb_block_address_postadjust_no_op() \ |
| 1469 | |
| 1470 | #define thumb_block_address_postadjust_up() \ |
| 1471 | address += offset \ |
| 1472 | |
| 1473 | #define thumb_block_address_postadjust_down() \ |
| 1474 | address -= offset \ |
| 1475 | |
| 1476 | #define thumb_block_address_postadjust_pop_pc() \ |
| 1477 | load_memory_u32(address + offset, pc); \ |
| 1478 | pc &= ~0x01; \ |
| 1479 | reg[REG_PC] = pc; \ |
| 1480 | address += offset + 4 \ |
| 1481 | |
| 1482 | #define thumb_block_address_postadjust_push_lr() \ |
| 1483 | store_memory_u32(address + offset, reg[REG_LR]); \ |
| 1484 | |
| 1485 | #define thumb_block_memory_wb_load(base_reg) \ |
| 1486 | if(!((reg_list >> base_reg) & 0x01)) \ |
| 1487 | { \ |
| 1488 | reg[base_reg] = address; \ |
| 1489 | } \ |
| 1490 | |
| 1491 | #define thumb_block_memory_wb_store(base_reg) \ |
| 1492 | reg[base_reg] = address \ |
| 1493 | |
| 1494 | #define thumb_block_memory(access_type, pre_op, post_op, base_reg) \ |
| 1495 | { \ |
| 1496 | u32 i; \ |
| 1497 | u32 offset = 0; \ |
| 1498 | thumb_decode_rlist(); \ |
| 1499 | using_register(thumb, base_reg, memory_base); \ |
| 1500 | u32 address = reg[base_reg] & ~0x03; \ |
| 1501 | thumb_block_address_preadjust_##pre_op(); \ |
| 1502 | \ |
| 1503 | for(i = 0; i < 8; i++) \ |
| 1504 | { \ |
| 1505 | if((reg_list >> i) & 1) \ |
| 1506 | { \ |
| 1507 | access_type##_aligned32(address + offset, reg[i]); \ |
| 1508 | offset += 4; \ |
| 1509 | } \ |
| 1510 | } \ |
| 1511 | \ |
| 1512 | thumb_pc_offset(2); \ |
| 1513 | \ |
| 1514 | thumb_block_address_postadjust_##post_op(); \ |
| 1515 | thumb_block_memory_wb_##access_type(base_reg); \ |
| 1516 | } \ |
| 1517 | |
| 1518 | #define thumb_conditional_branch(condition) \ |
| 1519 | { \ |
| 1520 | thumb_decode_branch_cond(); \ |
| 1521 | if(condition) \ |
| 1522 | { \ |
| 1523 | thumb_pc_offset((offset * 2) + 4); \ |
| 1524 | } \ |
| 1525 | else \ |
| 1526 | { \ |
| 1527 | thumb_pc_offset(2); \ |
| 1528 | } \ |
| 1529 | } \ |
| 1530 | |
| 1531 | // When a mode change occurs from non-FIQ to non-FIQ retire the current |
| 1532 | // reg[13] and reg[14] into reg_mode[cpu_mode][5] and reg_mode[cpu_mode][6] |
| 1533 | // respectively and load into reg[13] and reg[14] reg_mode[new_mode][5] and |
| 1534 | // reg_mode[new_mode][6]. When swapping to/from FIQ retire/load reg[8] |
| 1535 | // through reg[14] to/from reg_mode[MODE_FIQ][0] through reg_mode[MODE_FIQ][6]. |
| 1536 | |
| 1537 | u32 reg_mode[7][7]; |
| 1538 | |
| 1539 | u32 cpu_modes[32] = |
| 1540 | { |
| 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_INVALID, MODE_INVALID, MODE_INVALID, MODE_INVALID, |
| 1544 | MODE_INVALID, MODE_USER, MODE_FIQ, MODE_IRQ, MODE_SUPERVISOR, MODE_INVALID, |
| 1545 | MODE_INVALID, MODE_INVALID, MODE_ABORT, MODE_INVALID, MODE_INVALID, |
| 1546 | MODE_INVALID, MODE_INVALID, MODE_UNDEFINED, MODE_INVALID, MODE_INVALID, |
| 1547 | MODE_USER |
| 1548 | }; |
| 1549 | |
| 1550 | u32 cpu_modes_cpsr[7] = { 0x10, 0x11, 0x12, 0x13, 0x17, 0x1B, 0x1F }; |
| 1551 | |
| 1552 | // When switching modes set spsr[new_mode] to cpsr. Modifying PC as the |
| 1553 | // target of a data proc instruction will set cpsr to spsr[cpu_mode]. |
| 1554 | |
| 1555 | u32 initial_reg[64]; |
| 1556 | u32 *reg = initial_reg; |
| 1557 | u32 spsr[6]; |
| 1558 | |
| 1559 | // ARM/Thumb mode is stored in the flags directly, this is simpler than |
| 1560 | // shadowing it since it has a constant 1bit represenation. |
| 1561 | |
| 1562 | char *reg_names[16] = |
| 1563 | { |
| 1564 | " r0", " r1", " r2", " r3", " r4", " r5", " r6", " r7", |
| 1565 | " r8", " r9", "r10", " fp", " ip", " sp", " lr", " pc" |
| 1566 | }; |
| 1567 | |
| 1568 | char *cpu_mode_names[] = |
| 1569 | { |
| 1570 | "user", "irq", "fiq", "svsr", "abrt", "undf", "invd" |
| 1571 | }; |
| 1572 | |
| 1573 | |
| 1574 | #define execute_arm_instruction() \ |
| 1575 | using_instruction(arm); \ |
| 1576 | check_pc_region(); \ |
| 1577 | pc &= ~0x03; \ |
| 1578 | opcode = address32(pc_address_block, (pc & 0x7FFF)); \ |
| 1579 | condition = opcode >> 28; \ |
| 1580 | \ |
| 1581 | switch(condition) \ |
| 1582 | { \ |
| 1583 | case 0x0: \ |
| 1584 | /* EQ */ \ |
| 1585 | if(!z_flag) \ |
| 1586 | arm_next_instruction(); \ |
| 1587 | break; \ |
| 1588 | \ |
| 1589 | case 0x1: \ |
| 1590 | /* NE */ \ |
| 1591 | if(z_flag) \ |
| 1592 | arm_next_instruction(); \ |
| 1593 | break; \ |
| 1594 | \ |
| 1595 | case 0x2: \ |
| 1596 | /* CS */ \ |
| 1597 | if(!c_flag) \ |
| 1598 | arm_next_instruction(); \ |
| 1599 | break; \ |
| 1600 | \ |
| 1601 | case 0x3: \ |
| 1602 | /* CC */ \ |
| 1603 | if(c_flag) \ |
| 1604 | arm_next_instruction(); \ |
| 1605 | break; \ |
| 1606 | \ |
| 1607 | case 0x4: \ |
| 1608 | /* MI */ \ |
| 1609 | if(!n_flag) \ |
| 1610 | arm_next_instruction(); \ |
| 1611 | break; \ |
| 1612 | \ |
| 1613 | case 0x5: \ |
| 1614 | /* PL */ \ |
| 1615 | if(n_flag) \ |
| 1616 | arm_next_instruction(); \ |
| 1617 | break; \ |
| 1618 | \ |
| 1619 | case 0x6: \ |
| 1620 | /* VS */ \ |
| 1621 | if(!v_flag) \ |
| 1622 | arm_next_instruction(); \ |
| 1623 | break; \ |
| 1624 | \ |
| 1625 | case 0x7: \ |
| 1626 | /* VC */ \ |
| 1627 | if(v_flag) \ |
| 1628 | arm_next_instruction(); \ |
| 1629 | break; \ |
| 1630 | \ |
| 1631 | case 0x8: \ |
| 1632 | /* HI */ \ |
| 1633 | if((c_flag == 0) | z_flag) \ |
| 1634 | arm_next_instruction(); \ |
| 1635 | break; \ |
| 1636 | \ |
| 1637 | case 0x9: \ |
| 1638 | /* LS */ \ |
| 1639 | if(c_flag & (z_flag ^ 1)) \ |
| 1640 | arm_next_instruction(); \ |
| 1641 | break; \ |
| 1642 | \ |
| 1643 | case 0xA: \ |
| 1644 | /* GE */ \ |
| 1645 | if(n_flag != v_flag) \ |
| 1646 | arm_next_instruction(); \ |
| 1647 | break; \ |
| 1648 | \ |
| 1649 | case 0xB: \ |
| 1650 | /* LT */ \ |
| 1651 | if(n_flag == v_flag) \ |
| 1652 | arm_next_instruction(); \ |
| 1653 | break; \ |
| 1654 | \ |
| 1655 | case 0xC: \ |
| 1656 | /* GT */ \ |
| 1657 | if(z_flag | (n_flag != v_flag)) \ |
| 1658 | arm_next_instruction(); \ |
| 1659 | break; \ |
| 1660 | \ |
| 1661 | case 0xD: \ |
| 1662 | /* LE */ \ |
| 1663 | if((z_flag == 0) & (n_flag == v_flag)) \ |
| 1664 | arm_next_instruction(); \ |
| 1665 | break; \ |
| 1666 | \ |
| 1667 | case 0xE: \ |
| 1668 | /* AL */ \ |
| 1669 | break; \ |
| 1670 | \ |
| 1671 | case 0xF: \ |
| 1672 | /* Reserved - treat as "never" */ \ |
| 1673 | quit(); \ |
| 1674 | arm_next_instruction(); \ |
| 1675 | break; \ |
| 1676 | } \ |
| 1677 | \ |
| 1678 | switch((opcode >> 20) & 0xFF) \ |
| 1679 | { \ |
| 1680 | case 0x00: \ |
| 1681 | if((opcode & 0x90) == 0x90) \ |
| 1682 | { \ |
| 1683 | if(opcode & 0x20) \ |
| 1684 | { \ |
| 1685 | /* STRH rd, [rn], -rm */ \ |
| 1686 | arm_access_memory(store, no_op, half_reg, u16, yes, - reg[rm]); \ |
| 1687 | } \ |
| 1688 | else \ |
| 1689 | { \ |
| 1690 | /* MUL rd, rm, rs */ \ |
| 1691 | arm_multiply(no_op, no); \ |
| 1692 | } \ |
| 1693 | } \ |
| 1694 | else \ |
| 1695 | { \ |
| 1696 | /* AND rd, rn, reg_op */ \ |
| 1697 | arm_data_proc(reg[rn] & reg_sh, reg); \ |
| 1698 | } \ |
| 1699 | break; \ |
| 1700 | \ |
| 1701 | case 0x01: \ |
| 1702 | if((opcode & 0x90) == 0x90) \ |
| 1703 | { \ |
| 1704 | switch((opcode >> 5) & 0x03) \ |
| 1705 | { \ |
| 1706 | case 0: \ |
| 1707 | /* MULS rd, rm, rs */ \ |
| 1708 | arm_multiply(no_op, yes); \ |
| 1709 | break; \ |
| 1710 | \ |
| 1711 | case 1: \ |
| 1712 | /* LDRH rd, [rn], -rm */ \ |
| 1713 | arm_access_memory(load, no_op, half_reg, u16, yes, - reg[rm]); \ |
| 1714 | break; \ |
| 1715 | \ |
| 1716 | case 2: \ |
| 1717 | /* LDRSB rd, [rn], -rm */ \ |
| 1718 | arm_access_memory(load, no_op, half_reg, s8, yes, - reg[rm]); \ |
| 1719 | break; \ |
| 1720 | \ |
| 1721 | case 3: \ |
| 1722 | /* LDRSH rd, [rn], -rm */ \ |
| 1723 | arm_access_memory(load, no_op, half_reg, s16, yes, - reg[rm]); \ |
| 1724 | break; \ |
| 1725 | } \ |
| 1726 | } \ |
| 1727 | else \ |
| 1728 | { \ |
| 1729 | /* ANDS rd, rn, reg_op */ \ |
| 1730 | arm_data_proc_logic_flags(reg[rn] & reg_sh, reg); \ |
| 1731 | } \ |
| 1732 | break; \ |
| 1733 | \ |
| 1734 | case 0x02: \ |
| 1735 | if((opcode & 0x90) == 0x90) \ |
| 1736 | { \ |
| 1737 | if(opcode & 0x20) \ |
| 1738 | { \ |
| 1739 | /* STRH rd, [rn], -rm */ \ |
| 1740 | arm_access_memory(store, no_op, half_reg, u16, yes, - reg[rm]); \ |
| 1741 | } \ |
| 1742 | else \ |
| 1743 | { \ |
| 1744 | /* MLA rd, rm, rs, rn */ \ |
| 1745 | arm_multiply(+ reg[rn], no); \ |
| 1746 | } \ |
| 1747 | } \ |
| 1748 | else \ |
| 1749 | { \ |
| 1750 | /* EOR rd, rn, reg_op */ \ |
| 1751 | arm_data_proc(reg[rn] ^ reg_sh, reg); \ |
| 1752 | } \ |
| 1753 | break; \ |
| 1754 | \ |
| 1755 | case 0x03: \ |
| 1756 | if((opcode & 0x90) == 0x90) \ |
| 1757 | { \ |
| 1758 | switch((opcode >> 5) & 0x03) \ |
| 1759 | { \ |
| 1760 | case 0: \ |
| 1761 | /* MLAS rd, rm, rs, rn */ \ |
| 1762 | arm_multiply(+ reg[rn], yes); \ |
| 1763 | break; \ |
| 1764 | \ |
| 1765 | case 1: \ |
| 1766 | /* LDRH rd, [rn], -rm */ \ |
| 1767 | arm_access_memory(load, no_op, half_reg, u16, yes, - reg[rm]); \ |
| 1768 | break; \ |
| 1769 | \ |
| 1770 | case 2: \ |
| 1771 | /* LDRSB rd, [rn], -rm */ \ |
| 1772 | arm_access_memory(load, no_op, half_reg, s8, yes, - reg[rm]); \ |
| 1773 | break; \ |
| 1774 | \ |
| 1775 | case 3: \ |
| 1776 | /* LDRSH rd, [rn], -rm */ \ |
| 1777 | arm_access_memory(load, no_op, half_reg, s16, yes, - reg[rm]); \ |
| 1778 | break; \ |
| 1779 | } \ |
| 1780 | } \ |
| 1781 | else \ |
| 1782 | { \ |
| 1783 | /* EORS rd, rn, reg_op */ \ |
| 1784 | arm_data_proc_logic_flags(reg[rn] ^ reg_sh, reg); \ |
| 1785 | } \ |
| 1786 | break; \ |
| 1787 | \ |
| 1788 | case 0x04: \ |
| 1789 | if((opcode & 0x90) == 0x90) \ |
| 1790 | { \ |
| 1791 | /* STRH rd, [rn], -imm */ \ |
| 1792 | arm_access_memory(store, no_op, half_imm, u16, yes, - offset); \ |
| 1793 | } \ |
| 1794 | else \ |
| 1795 | { \ |
| 1796 | /* SUB rd, rn, reg_op */ \ |
| 1797 | arm_data_proc(reg[rn] - reg_sh, reg); \ |
| 1798 | } \ |
| 1799 | break; \ |
| 1800 | \ |
| 1801 | case 0x05: \ |
| 1802 | if((opcode & 0x90) == 0x90) \ |
| 1803 | { \ |
| 1804 | switch((opcode >> 5) & 0x03) \ |
| 1805 | { \ |
| 1806 | case 1: \ |
| 1807 | /* LDRH rd, [rn], -imm */ \ |
| 1808 | arm_access_memory(load, no_op, half_imm, u16, yes, - offset); \ |
| 1809 | break; \ |
| 1810 | \ |
| 1811 | case 2: \ |
| 1812 | /* LDRSB rd, [rn], -imm */ \ |
| 1813 | arm_access_memory(load, no_op, half_imm, s8, yes, - offset); \ |
| 1814 | break; \ |
| 1815 | \ |
| 1816 | case 3: \ |
| 1817 | /* LDRSH rd, [rn], -imm */ \ |
| 1818 | arm_access_memory(load, no_op, half_imm, s16, yes, - offset); \ |
| 1819 | break; \ |
| 1820 | } \ |
| 1821 | } \ |
| 1822 | else \ |
| 1823 | { \ |
| 1824 | /* SUBS rd, rn, reg_op */ \ |
| 1825 | arm_data_proc_sub_flags(reg[rn], reg_sh, reg); \ |
| 1826 | } \ |
| 1827 | break; \ |
| 1828 | \ |
| 1829 | case 0x06: \ |
| 1830 | if((opcode & 0x90) == 0x90) \ |
| 1831 | { \ |
| 1832 | /* STRH rd, [rn], -imm */ \ |
| 1833 | arm_access_memory(store, no_op, half_imm, u16, yes, - offset); \ |
| 1834 | } \ |
| 1835 | else \ |
| 1836 | { \ |
| 1837 | /* RSB rd, rn, reg_op */ \ |
| 1838 | arm_data_proc(reg_sh - reg[rn], reg); \ |
| 1839 | } \ |
| 1840 | break; \ |
| 1841 | \ |
| 1842 | case 0x07: \ |
| 1843 | if((opcode & 0x90) == 0x90) \ |
| 1844 | { \ |
| 1845 | switch((opcode >> 5) & 0x03) \ |
| 1846 | { \ |
| 1847 | case 1: \ |
| 1848 | /* LDRH rd, [rn], -imm */ \ |
| 1849 | arm_access_memory(load, no_op, half_imm, u16, yes, - offset); \ |
| 1850 | break; \ |
| 1851 | \ |
| 1852 | case 2: \ |
| 1853 | /* LDRSB rd, [rn], -imm */ \ |
| 1854 | arm_access_memory(load, no_op, half_imm, s8, yes, - offset); \ |
| 1855 | break; \ |
| 1856 | \ |
| 1857 | case 3: \ |
| 1858 | /* LDRSH rd, [rn], -imm */ \ |
| 1859 | arm_access_memory(load, no_op, half_imm, s16, yes, - offset); \ |
| 1860 | break; \ |
| 1861 | } \ |
| 1862 | } \ |
| 1863 | else \ |
| 1864 | { \ |
| 1865 | /* RSBS rd, rn, reg_op */ \ |
| 1866 | arm_data_proc_sub_flags(reg_sh, reg[rn], reg); \ |
| 1867 | } \ |
| 1868 | break; \ |
| 1869 | \ |
| 1870 | case 0x08: \ |
| 1871 | if((opcode & 0x90) == 0x90) \ |
| 1872 | { \ |
| 1873 | if(opcode & 0x20) \ |
| 1874 | { \ |
| 1875 | /* STRH rd, [rn], +rm */ \ |
| 1876 | arm_access_memory(store, no_op, half_reg, u16, yes, + reg[rm]); \ |
| 1877 | } \ |
| 1878 | else \ |
| 1879 | { \ |
| 1880 | /* UMULL rd, rm, rs */ \ |
| 1881 | arm_multiply_long(no_op, no, u); \ |
| 1882 | } \ |
| 1883 | } \ |
| 1884 | else \ |
| 1885 | { \ |
| 1886 | /* ADD rd, rn, reg_op */ \ |
| 1887 | arm_data_proc(reg[rn] + reg_sh, reg); \ |
| 1888 | } \ |
| 1889 | break; \ |
| 1890 | \ |
| 1891 | case 0x09: \ |
| 1892 | if((opcode & 0x90) == 0x90) \ |
| 1893 | { \ |
| 1894 | switch((opcode >> 5) & 0x03) \ |
| 1895 | { \ |
| 1896 | case 0: \ |
| 1897 | /* UMULLS rdlo, rdhi, rm, rs */ \ |
| 1898 | arm_multiply_long(no_op, yes, u); \ |
| 1899 | break; \ |
| 1900 | \ |
| 1901 | case 1: \ |
| 1902 | /* LDRH rd, [rn], +rm */ \ |
| 1903 | arm_access_memory(load, no_op, half_reg, u16, yes, + reg[rm]); \ |
| 1904 | break; \ |
| 1905 | \ |
| 1906 | case 2: \ |
| 1907 | /* LDRSB rd, [rn], +rm */ \ |
| 1908 | arm_access_memory(load, no_op, half_reg, s8, yes, + reg[rm]); \ |
| 1909 | break; \ |
| 1910 | \ |
| 1911 | case 3: \ |
| 1912 | /* LDRSH rd, [rn], +rm */ \ |
| 1913 | arm_access_memory(load, no_op, half_reg, s16, yes, + reg[rm]); \ |
| 1914 | break; \ |
| 1915 | } \ |
| 1916 | } \ |
| 1917 | else \ |
| 1918 | { \ |
| 1919 | /* ADDS rd, rn, reg_op */ \ |
| 1920 | arm_data_proc_add_flags(reg[rn], reg_sh, reg); \ |
| 1921 | } \ |
| 1922 | break; \ |
| 1923 | \ |
| 1924 | case 0x0A: \ |
| 1925 | if((opcode & 0x90) == 0x90) \ |
| 1926 | { \ |
| 1927 | if(opcode & 0x20) \ |
| 1928 | { \ |
| 1929 | /* STRH rd, [rn], +rm */ \ |
| 1930 | arm_access_memory(store, no_op, half_reg, u16, yes, + reg[rm]); \ |
| 1931 | } \ |
| 1932 | else \ |
| 1933 | { \ |
| 1934 | /* UMLAL rd, rm, rs */ \ |
| 1935 | arm_multiply_long(arm_multiply_long_addop(u), no, u); \ |
| 1936 | } \ |
| 1937 | } \ |
| 1938 | else \ |
| 1939 | { \ |
| 1940 | /* ADC rd, rn, reg_op */ \ |
| 1941 | arm_data_proc(reg[rn] + reg_sh + c_flag, reg); \ |
| 1942 | } \ |
| 1943 | break; \ |
| 1944 | \ |
| 1945 | case 0x0B: \ |
| 1946 | if((opcode & 0x90) == 0x90) \ |
| 1947 | { \ |
| 1948 | switch((opcode >> 5) & 0x03) \ |
| 1949 | { \ |
| 1950 | case 0: \ |
| 1951 | /* UMLALS rdlo, rdhi, rm, rs */ \ |
| 1952 | arm_multiply_long(arm_multiply_long_addop(u), yes, u); \ |
| 1953 | break; \ |
| 1954 | \ |
| 1955 | case 1: \ |
| 1956 | /* LDRH rd, [rn], +rm */ \ |
| 1957 | arm_access_memory(load, no_op, half_reg, u16, yes, + reg[rm]); \ |
| 1958 | break; \ |
| 1959 | \ |
| 1960 | case 2: \ |
| 1961 | /* LDRSB rd, [rn], +rm */ \ |
| 1962 | arm_access_memory(load, no_op, half_reg, s8, yes, + reg[rm]); \ |
| 1963 | break; \ |
| 1964 | \ |
| 1965 | case 3: \ |
| 1966 | /* LDRSH rd, [rn], +rm */ \ |
| 1967 | arm_access_memory(load, no_op, half_reg, s16, yes, + reg[rm]); \ |
| 1968 | break; \ |
| 1969 | } \ |
| 1970 | } \ |
| 1971 | else \ |
| 1972 | { \ |
| 1973 | /* ADCS rd, rn, reg_op */ \ |
| 1974 | arm_data_proc_add_flags(reg[rn], reg_sh + c_flag, reg); \ |
| 1975 | } \ |
| 1976 | break; \ |
| 1977 | \ |
| 1978 | case 0x0C: \ |
| 1979 | if((opcode & 0x90) == 0x90) \ |
| 1980 | { \ |
| 1981 | if(opcode & 0x20) \ |
| 1982 | { \ |
| 1983 | /* STRH rd, [rn], +imm */ \ |
| 1984 | arm_access_memory(store, no_op, half_imm, u16, yes, + offset); \ |
| 1985 | } \ |
| 1986 | else \ |
| 1987 | { \ |
| 1988 | /* SMULL rd, rm, rs */ \ |
| 1989 | arm_multiply_long(no_op, no, s); \ |
| 1990 | } \ |
| 1991 | } \ |
| 1992 | else \ |
| 1993 | { \ |
| 1994 | /* SBC rd, rn, reg_op */ \ |
| 1995 | arm_data_proc(reg[rn] - (reg_sh + (c_flag ^ 1)), reg); \ |
| 1996 | } \ |
| 1997 | break; \ |
| 1998 | \ |
| 1999 | case 0x0D: \ |
| 2000 | if((opcode & 0x90) == 0x90) \ |
| 2001 | { \ |
| 2002 | switch((opcode >> 5) & 0x03) \ |
| 2003 | { \ |
| 2004 | case 0: \ |
| 2005 | /* SMULLS rdlo, rdhi, rm, rs */ \ |
| 2006 | arm_multiply_long(no_op, yes, s); \ |
| 2007 | break; \ |
| 2008 | \ |
| 2009 | case 1: \ |
| 2010 | /* LDRH rd, [rn], +imm */ \ |
| 2011 | arm_access_memory(load, no_op, half_imm, u16, yes, + offset); \ |
| 2012 | break; \ |
| 2013 | \ |
| 2014 | case 2: \ |
| 2015 | /* LDRSB rd, [rn], +imm */ \ |
| 2016 | arm_access_memory(load, no_op, half_imm, s8, yes, + offset); \ |
| 2017 | break; \ |
| 2018 | \ |
| 2019 | case 3: \ |
| 2020 | /* LDRSH rd, [rn], +imm */ \ |
| 2021 | arm_access_memory(load, no_op, half_imm, s16, yes, + offset); \ |
| 2022 | break; \ |
| 2023 | } \ |
| 2024 | } \ |
| 2025 | else \ |
| 2026 | { \ |
| 2027 | /* SBCS rd, rn, reg_op */ \ |
| 2028 | arm_data_proc_sub_flags(reg[rn], (reg_sh + (c_flag ^ 1)), reg); \ |
| 2029 | } \ |
| 2030 | break; \ |
| 2031 | \ |
| 2032 | case 0x0E: \ |
| 2033 | if((opcode & 0x90) == 0x90) \ |
| 2034 | { \ |
| 2035 | if(opcode & 0x20) \ |
| 2036 | { \ |
| 2037 | /* STRH rd, [rn], +imm */ \ |
| 2038 | arm_access_memory(store, no_op, half_imm, u16, yes, + offset); \ |
| 2039 | } \ |
| 2040 | else \ |
| 2041 | { \ |
| 2042 | /* SMLAL rd, rm, rs */ \ |
| 2043 | arm_multiply_long(arm_multiply_long_addop(s), no, s); \ |
| 2044 | } \ |
| 2045 | } \ |
| 2046 | else \ |
| 2047 | { \ |
| 2048 | /* RSC rd, rn, reg_op */ \ |
| 2049 | arm_data_proc(reg_sh - reg[rn] + c_flag - 1, reg); \ |
| 2050 | } \ |
| 2051 | break; \ |
| 2052 | \ |
| 2053 | case 0x0F: \ |
| 2054 | if((opcode & 0x90) == 0x90) \ |
| 2055 | { \ |
| 2056 | switch((opcode >> 5) & 0x03) \ |
| 2057 | { \ |
| 2058 | case 0: \ |
| 2059 | /* SMLALS rdlo, rdhi, rm, rs */ \ |
| 2060 | arm_multiply_long(arm_multiply_long_addop(s), yes, s); \ |
| 2061 | break; \ |
| 2062 | \ |
| 2063 | case 1: \ |
| 2064 | /* LDRH rd, [rn], +imm */ \ |
| 2065 | arm_access_memory(load, no_op, half_imm, u16, yes, + offset); \ |
| 2066 | break; \ |
| 2067 | \ |
| 2068 | case 2: \ |
| 2069 | /* LDRSB rd, [rn], +imm */ \ |
| 2070 | arm_access_memory(load, no_op, half_imm, s8, yes, + offset); \ |
| 2071 | break; \ |
| 2072 | \ |
| 2073 | case 3: \ |
| 2074 | /* LDRSH rd, [rn], +imm */ \ |
| 2075 | arm_access_memory(load, no_op, half_imm, s16, yes, + offset); \ |
| 2076 | break; \ |
| 2077 | } \ |
| 2078 | } \ |
| 2079 | else \ |
| 2080 | { \ |
| 2081 | /* RSCS rd, rn, reg_op */ \ |
| 2082 | arm_data_proc_sub_flags((reg_sh + c_flag - 1), reg[rn], reg); \ |
| 2083 | } \ |
| 2084 | break; \ |
| 2085 | \ |
| 2086 | case 0x10: \ |
| 2087 | if((opcode & 0x90) == 0x90) \ |
| 2088 | { \ |
| 2089 | if(opcode & 0x20) \ |
| 2090 | { \ |
| 2091 | /* STRH rd, [rn - rm] */ \ |
| 2092 | arm_access_memory(store, - reg[rm], half_reg, u16, no, no_op); \ |
| 2093 | } \ |
| 2094 | else \ |
| 2095 | { \ |
| 2096 | /* SWP rd, rm, [rn] */ \ |
| 2097 | arm_swap(u32); \ |
| 2098 | } \ |
| 2099 | } \ |
| 2100 | else \ |
| 2101 | { \ |
| 2102 | /* MRS rd, cpsr */ \ |
| 2103 | arm_psr(reg, read, reg[REG_CPSR]); \ |
| 2104 | } \ |
| 2105 | break; \ |
| 2106 | \ |
| 2107 | case 0x11: \ |
| 2108 | if((opcode & 0x90) == 0x90) \ |
| 2109 | { \ |
| 2110 | switch((opcode >> 5) & 0x03) \ |
| 2111 | { \ |
| 2112 | case 1: \ |
| 2113 | /* LDRH rd, [rn - rm] */ \ |
| 2114 | arm_access_memory(load, - reg[rm], half_reg, u16, no, no_op); \ |
| 2115 | break; \ |
| 2116 | \ |
| 2117 | case 2: \ |
| 2118 | /* LDRSB rd, [rn - rm] */ \ |
| 2119 | arm_access_memory(load, - reg[rm], half_reg, s8, no, no_op); \ |
| 2120 | break; \ |
| 2121 | \ |
| 2122 | case 3: \ |
| 2123 | /* LDRSH rd, [rn - rm] */ \ |
| 2124 | arm_access_memory(load, - reg[rm], half_reg, s16, no, no_op); \ |
| 2125 | break; \ |
| 2126 | } \ |
| 2127 | } \ |
| 2128 | else \ |
| 2129 | { \ |
| 2130 | /* TST rd, rn, reg_op */ \ |
| 2131 | arm_data_proc_test_logic(reg[rn] & reg_sh, reg); \ |
| 2132 | } \ |
| 2133 | break; \ |
| 2134 | \ |
| 2135 | case 0x12: \ |
| 2136 | if((opcode & 0x90) == 0x90) \ |
| 2137 | { \ |
| 2138 | /* STRH rd, [rn - rm]! */ \ |
| 2139 | arm_access_memory(store, - reg[rm], half_reg, u16, yes, no_op); \ |
| 2140 | } \ |
| 2141 | else \ |
| 2142 | { \ |
| 2143 | if(opcode & 0x10) \ |
| 2144 | { \ |
| 2145 | /* BX rn */ \ |
| 2146 | arm_decode_branchx(); \ |
| 2147 | u32 src = reg[rn]; \ |
| 2148 | if(src & 0x01) \ |
| 2149 | { \ |
| 2150 | src -= 1; \ |
| 2151 | arm_pc_offset_update_direct(src); \ |
| 2152 | reg[REG_CPSR] |= 0x20; \ |
| 2153 | goto thumb_loop; \ |
| 2154 | } \ |
| 2155 | else \ |
| 2156 | { \ |
| 2157 | arm_pc_offset_update_direct(src); \ |
| 2158 | } \ |
| 2159 | } \ |
| 2160 | else \ |
| 2161 | { \ |
| 2162 | /* MSR cpsr, rm */ \ |
| 2163 | arm_psr(reg, store, cpsr); \ |
| 2164 | } \ |
| 2165 | } \ |
| 2166 | break; \ |
| 2167 | \ |
| 2168 | case 0x13: \ |
| 2169 | if((opcode & 0x90) == 0x90) \ |
| 2170 | { \ |
| 2171 | switch((opcode >> 5) & 0x03) \ |
| 2172 | { \ |
| 2173 | case 1: \ |
| 2174 | /* LDRH rd, [rn - rm]! */ \ |
| 2175 | arm_access_memory(load, - reg[rm], half_reg, u16, yes, no_op); \ |
| 2176 | break; \ |
| 2177 | \ |
| 2178 | case 2: \ |
| 2179 | /* LDRSB rd, [rn - rm]! */ \ |
| 2180 | arm_access_memory(load, - reg[rm], half_reg, s8, yes, no_op); \ |
| 2181 | break; \ |
| 2182 | \ |
| 2183 | case 3: \ |
| 2184 | /* LDRSH rd, [rn - rm]! */ \ |
| 2185 | arm_access_memory(load, - reg[rm], half_reg, s16, yes, no_op); \ |
| 2186 | break; \ |
| 2187 | } \ |
| 2188 | } \ |
| 2189 | else \ |
| 2190 | { \ |
| 2191 | /* TEQ rd, rn, reg_op */ \ |
| 2192 | arm_data_proc_test_logic(reg[rn] ^ reg_sh, reg); \ |
| 2193 | } \ |
| 2194 | break; \ |
| 2195 | \ |
| 2196 | case 0x14: \ |
| 2197 | if((opcode & 0x90) == 0x90) \ |
| 2198 | { \ |
| 2199 | if(opcode & 0x20) \ |
| 2200 | { \ |
| 2201 | /* STRH rd, [rn - imm] */ \ |
| 2202 | arm_access_memory(store, - offset, half_imm, u16, no, no_op); \ |
| 2203 | } \ |
| 2204 | else \ |
| 2205 | { \ |
| 2206 | /* SWPB rd, rm, [rn] */ \ |
| 2207 | arm_swap(u8); \ |
| 2208 | } \ |
| 2209 | } \ |
| 2210 | else \ |
| 2211 | { \ |
| 2212 | /* MRS rd, spsr */ \ |
| 2213 | arm_psr(reg, read, spsr[reg[CPU_MODE]]); \ |
| 2214 | } \ |
| 2215 | break; \ |
| 2216 | \ |
| 2217 | case 0x15: \ |
| 2218 | if((opcode & 0x90) == 0x90) \ |
| 2219 | { \ |
| 2220 | switch((opcode >> 5) & 0x03) \ |
| 2221 | { \ |
| 2222 | case 1: \ |
| 2223 | /* LDRH rd, [rn - imm] */ \ |
| 2224 | arm_access_memory(load, - offset, half_imm, u16, no, no_op); \ |
| 2225 | break; \ |
| 2226 | \ |
| 2227 | case 2: \ |
| 2228 | /* LDRSB rd, [rn - imm] */ \ |
| 2229 | arm_access_memory(load, - offset, half_imm, s8, no, no_op); \ |
| 2230 | break; \ |
| 2231 | \ |
| 2232 | case 3: \ |
| 2233 | /* LDRSH rd, [rn - imm] */ \ |
| 2234 | arm_access_memory(load, - offset, half_imm, s16, no, no_op); \ |
| 2235 | break; \ |
| 2236 | } \ |
| 2237 | } \ |
| 2238 | else \ |
| 2239 | { \ |
| 2240 | /* CMP rn, reg_op */ \ |
| 2241 | arm_data_proc_test_sub(reg[rn], reg_sh, reg); \ |
| 2242 | } \ |
| 2243 | break; \ |
| 2244 | \ |
| 2245 | case 0x16: \ |
| 2246 | if((opcode & 0x90) == 0x90) \ |
| 2247 | { \ |
| 2248 | /* STRH rd, [rn - imm]! */ \ |
| 2249 | arm_access_memory(store, - offset, half_imm, u16, yes, no_op); \ |
| 2250 | } \ |
| 2251 | else \ |
| 2252 | { \ |
| 2253 | /* MSR spsr, rm */ \ |
| 2254 | arm_psr(reg, store, spsr); \ |
| 2255 | } \ |
| 2256 | break; \ |
| 2257 | \ |
| 2258 | case 0x17: \ |
| 2259 | if((opcode & 0x90) == 0x90) \ |
| 2260 | { \ |
| 2261 | switch((opcode >> 5) & 0x03) \ |
| 2262 | { \ |
| 2263 | case 1: \ |
| 2264 | /* LDRH rd, [rn - imm]! */ \ |
| 2265 | arm_access_memory(load, - offset, half_imm, u16, yes, no_op); \ |
| 2266 | break; \ |
| 2267 | \ |
| 2268 | case 2: \ |
| 2269 | /* LDRSB rd, [rn - imm]! */ \ |
| 2270 | arm_access_memory(load, - offset, half_imm, s8, yes, no_op); \ |
| 2271 | break; \ |
| 2272 | \ |
| 2273 | case 3: \ |
| 2274 | /* LDRSH rd, [rn - imm]! */ \ |
| 2275 | arm_access_memory(load, - offset, half_imm, s16, yes, no_op); \ |
| 2276 | break; \ |
| 2277 | } \ |
| 2278 | } \ |
| 2279 | else \ |
| 2280 | { \ |
| 2281 | /* CMN rd, rn, reg_op */ \ |
| 2282 | arm_data_proc_test_add(reg[rn], reg_sh, reg); \ |
| 2283 | } \ |
| 2284 | break; \ |
| 2285 | \ |
| 2286 | case 0x18: \ |
| 2287 | if((opcode & 0x90) == 0x90) \ |
| 2288 | { \ |
| 2289 | /* STRH rd, [rn + rm] */ \ |
| 2290 | arm_access_memory(store, + reg[rm], half_reg, u16, no, no_op); \ |
| 2291 | } \ |
| 2292 | else \ |
| 2293 | { \ |
| 2294 | /* ORR rd, rn, reg_op */ \ |
| 2295 | arm_data_proc(reg[rn] | reg_sh, reg); \ |
| 2296 | } \ |
| 2297 | break; \ |
| 2298 | \ |
| 2299 | case 0x19: \ |
| 2300 | if((opcode & 0x90) == 0x90) \ |
| 2301 | { \ |
| 2302 | switch((opcode >> 5) & 0x03) \ |
| 2303 | { \ |
| 2304 | case 1: \ |
| 2305 | /* LDRH rd, [rn + rm] */ \ |
| 2306 | arm_access_memory(load, + reg[rm], half_reg, u16, no, no_op); \ |
| 2307 | break; \ |
| 2308 | \ |
| 2309 | case 2: \ |
| 2310 | /* LDRSB rd, [rn + rm] */ \ |
| 2311 | arm_access_memory(load, + reg[rm], half_reg, s8, no, no_op); \ |
| 2312 | break; \ |
| 2313 | \ |
| 2314 | case 3: \ |
| 2315 | /* LDRSH rd, [rn + rm] */ \ |
| 2316 | arm_access_memory(load, + reg[rm], half_reg, s16, no, no_op); \ |
| 2317 | break; \ |
| 2318 | } \ |
| 2319 | } \ |
| 2320 | else \ |
| 2321 | { \ |
| 2322 | /* ORRS rd, rn, reg_op */ \ |
| 2323 | arm_data_proc_logic_flags(reg[rn] | reg_sh, reg); \ |
| 2324 | } \ |
| 2325 | break; \ |
| 2326 | \ |
| 2327 | case 0x1A: \ |
| 2328 | if((opcode & 0x90) == 0x90) \ |
| 2329 | { \ |
| 2330 | /* STRH rd, [rn + rm]! */ \ |
| 2331 | arm_access_memory(store, + reg[rm], half_reg, u16, yes, no_op); \ |
| 2332 | } \ |
| 2333 | else \ |
| 2334 | { \ |
| 2335 | /* MOV rd, reg_op */ \ |
| 2336 | arm_data_proc(reg_sh, reg); \ |
| 2337 | } \ |
| 2338 | break; \ |
| 2339 | \ |
| 2340 | case 0x1B: \ |
| 2341 | if((opcode & 0x90) == 0x90) \ |
| 2342 | { \ |
| 2343 | switch((opcode >> 5) & 0x03) \ |
| 2344 | { \ |
| 2345 | case 1: \ |
| 2346 | /* LDRH rd, [rn + rm]! */ \ |
| 2347 | arm_access_memory(load, + reg[rm], half_reg, u16, yes, no_op); \ |
| 2348 | break; \ |
| 2349 | \ |
| 2350 | case 2: \ |
| 2351 | /* LDRSB rd, [rn + rm]! */ \ |
| 2352 | arm_access_memory(load, + reg[rm], half_reg, s8, yes, no_op); \ |
| 2353 | break; \ |
| 2354 | \ |
| 2355 | case 3: \ |
| 2356 | /* LDRSH rd, [rn + rm]! */ \ |
| 2357 | arm_access_memory(load, + reg[rm], half_reg, s16, yes, no_op); \ |
| 2358 | break; \ |
| 2359 | } \ |
| 2360 | } \ |
| 2361 | else \ |
| 2362 | { \ |
| 2363 | /* MOVS rd, reg_op */ \ |
| 2364 | arm_data_proc_logic_flags(reg_sh, reg); \ |
| 2365 | } \ |
| 2366 | break; \ |
| 2367 | \ |
| 2368 | case 0x1C: \ |
| 2369 | if((opcode & 0x90) == 0x90) \ |
| 2370 | { \ |
| 2371 | /* STRH rd, [rn + imm] */ \ |
| 2372 | arm_access_memory(store, + offset, half_imm, u16, no, no_op); \ |
| 2373 | } \ |
| 2374 | else \ |
| 2375 | { \ |
| 2376 | /* BIC rd, rn, reg_op */ \ |
| 2377 | arm_data_proc(reg[rn] & (~reg_sh), reg); \ |
| 2378 | } \ |
| 2379 | break; \ |
| 2380 | \ |
| 2381 | case 0x1D: \ |
| 2382 | if((opcode & 0x90) == 0x90) \ |
| 2383 | { \ |
| 2384 | switch((opcode >> 5) & 0x03) \ |
| 2385 | { \ |
| 2386 | case 1: \ |
| 2387 | /* LDRH rd, [rn + imm] */ \ |
| 2388 | arm_access_memory(load, + offset, half_imm, u16, no, no_op); \ |
| 2389 | break; \ |
| 2390 | \ |
| 2391 | case 2: \ |
| 2392 | /* LDRSB rd, [rn + imm] */ \ |
| 2393 | arm_access_memory(load, + offset, half_imm, s8, no, no_op); \ |
| 2394 | break; \ |
| 2395 | \ |
| 2396 | case 3: \ |
| 2397 | /* LDRSH rd, [rn + imm] */ \ |
| 2398 | arm_access_memory(load, + offset, half_imm, s16, no, no_op); \ |
| 2399 | break; \ |
| 2400 | } \ |
| 2401 | } \ |
| 2402 | else \ |
| 2403 | { \ |
| 2404 | /* BICS rd, rn, reg_op */ \ |
| 2405 | arm_data_proc_logic_flags(reg[rn] & (~reg_sh), reg); \ |
| 2406 | } \ |
| 2407 | break; \ |
| 2408 | \ |
| 2409 | case 0x1E: \ |
| 2410 | if((opcode & 0x90) == 0x90) \ |
| 2411 | { \ |
| 2412 | /* STRH rd, [rn + imm]! */ \ |
| 2413 | arm_access_memory(store, + offset, half_imm, u16, yes, no_op); \ |
| 2414 | } \ |
| 2415 | else \ |
| 2416 | { \ |
| 2417 | /* MVN rd, reg_op */ \ |
| 2418 | arm_data_proc(~reg_sh, reg); \ |
| 2419 | } \ |
| 2420 | break; \ |
| 2421 | \ |
| 2422 | case 0x1F: \ |
| 2423 | if((opcode & 0x90) == 0x90) \ |
| 2424 | { \ |
| 2425 | switch((opcode >> 5) & 0x03) \ |
| 2426 | { \ |
| 2427 | case 1: \ |
| 2428 | /* LDRH rd, [rn + imm]! */ \ |
| 2429 | arm_access_memory(load, + offset, half_imm, u16, yes, no_op); \ |
| 2430 | break; \ |
| 2431 | \ |
| 2432 | case 2: \ |
| 2433 | /* LDRSB rd, [rn + imm]! */ \ |
| 2434 | arm_access_memory(load, + offset, half_imm, s8, yes, no_op); \ |
| 2435 | break; \ |
| 2436 | \ |
| 2437 | case 3: \ |
| 2438 | /* LDRSH rd, [rn + imm]! */ \ |
| 2439 | arm_access_memory(load, + offset, half_imm, s16, yes, no_op); \ |
| 2440 | break; \ |
| 2441 | } \ |
| 2442 | } \ |
| 2443 | else \ |
| 2444 | { \ |
| 2445 | /* MVNS rd, rn, reg_op */ \ |
| 2446 | arm_data_proc_logic_flags(~reg_sh, reg); \ |
| 2447 | } \ |
| 2448 | break; \ |
| 2449 | \ |
| 2450 | case 0x20: \ |
| 2451 | /* AND rd, rn, imm */ \ |
| 2452 | arm_data_proc(reg[rn] & imm, imm); \ |
| 2453 | break; \ |
| 2454 | \ |
| 2455 | case 0x21: \ |
| 2456 | /* ANDS rd, rn, imm */ \ |
| 2457 | arm_data_proc_logic_flags(reg[rn] & imm, imm); \ |
| 2458 | break; \ |
| 2459 | \ |
| 2460 | case 0x22: \ |
| 2461 | /* EOR rd, rn, imm */ \ |
| 2462 | arm_data_proc(reg[rn] ^ imm, imm); \ |
| 2463 | break; \ |
| 2464 | \ |
| 2465 | case 0x23: \ |
| 2466 | /* EORS rd, rn, imm */ \ |
| 2467 | arm_data_proc_logic_flags(reg[rn] ^ imm, imm); \ |
| 2468 | break; \ |
| 2469 | \ |
| 2470 | case 0x24: \ |
| 2471 | /* SUB rd, rn, imm */ \ |
| 2472 | arm_data_proc(reg[rn] - imm, imm); \ |
| 2473 | break; \ |
| 2474 | \ |
| 2475 | case 0x25: \ |
| 2476 | /* SUBS rd, rn, imm */ \ |
| 2477 | arm_data_proc_sub_flags(reg[rn], imm, imm); \ |
| 2478 | break; \ |
| 2479 | \ |
| 2480 | case 0x26: \ |
| 2481 | /* RSB rd, rn, imm */ \ |
| 2482 | arm_data_proc(imm - reg[rn], imm); \ |
| 2483 | break; \ |
| 2484 | \ |
| 2485 | case 0x27: \ |
| 2486 | /* RSBS rd, rn, imm */ \ |
| 2487 | arm_data_proc_sub_flags(imm, reg[rn], imm); \ |
| 2488 | break; \ |
| 2489 | \ |
| 2490 | case 0x28: \ |
| 2491 | /* ADD rd, rn, imm */ \ |
| 2492 | arm_data_proc(reg[rn] + imm, imm); \ |
| 2493 | break; \ |
| 2494 | \ |
| 2495 | case 0x29: \ |
| 2496 | /* ADDS rd, rn, imm */ \ |
| 2497 | arm_data_proc_add_flags(reg[rn], imm, imm); \ |
| 2498 | break; \ |
| 2499 | \ |
| 2500 | case 0x2A: \ |
| 2501 | /* ADC rd, rn, imm */ \ |
| 2502 | arm_data_proc(reg[rn] + imm + c_flag, imm); \ |
| 2503 | break; \ |
| 2504 | \ |
| 2505 | case 0x2B: \ |
| 2506 | /* ADCS rd, rn, imm */ \ |
| 2507 | arm_data_proc_add_flags(reg[rn] + imm, c_flag, imm); \ |
| 2508 | break; \ |
| 2509 | \ |
| 2510 | case 0x2C: \ |
| 2511 | /* SBC rd, rn, imm */ \ |
| 2512 | arm_data_proc(reg[rn] - imm + c_flag - 1, imm); \ |
| 2513 | break; \ |
| 2514 | \ |
| 2515 | case 0x2D: \ |
| 2516 | /* SBCS rd, rn, imm */ \ |
| 2517 | arm_data_proc_sub_flags(reg[rn], (imm + (c_flag ^ 1)), imm); \ |
| 2518 | break; \ |
| 2519 | \ |
| 2520 | case 0x2E: \ |
| 2521 | /* RSC rd, rn, imm */ \ |
| 2522 | arm_data_proc(imm - reg[rn] + c_flag - 1, imm); \ |
| 2523 | break; \ |
| 2524 | \ |
| 2525 | case 0x2F: \ |
| 2526 | /* RSCS rd, rn, imm */ \ |
| 2527 | arm_data_proc_sub_flags((imm + c_flag - 1), reg[rn], imm); \ |
| 2528 | break; \ |
| 2529 | \ |
| 2530 | case 0x30 ... 0x31: \ |
| 2531 | /* TST rn, imm */ \ |
| 2532 | arm_data_proc_test_logic(reg[rn] & imm, imm); \ |
| 2533 | break; \ |
| 2534 | \ |
| 2535 | case 0x32: \ |
| 2536 | /* MSR cpsr, imm */ \ |
| 2537 | arm_psr(imm, store, cpsr); \ |
| 2538 | break; \ |
| 2539 | \ |
| 2540 | case 0x33: \ |
| 2541 | /* TEQ rn, imm */ \ |
| 2542 | arm_data_proc_test_logic(reg[rn] ^ imm, imm); \ |
| 2543 | break; \ |
| 2544 | \ |
| 2545 | case 0x34 ... 0x35: \ |
| 2546 | /* CMP rn, imm */ \ |
| 2547 | arm_data_proc_test_sub(reg[rn], imm, imm); \ |
| 2548 | break; \ |
| 2549 | \ |
| 2550 | case 0x36: \ |
| 2551 | /* MSR spsr, imm */ \ |
| 2552 | arm_psr(imm, store, spsr); \ |
| 2553 | break; \ |
| 2554 | \ |
| 2555 | case 0x37: \ |
| 2556 | /* CMN rn, imm */ \ |
| 2557 | arm_data_proc_test_add(reg[rn], imm, imm); \ |
| 2558 | break; \ |
| 2559 | \ |
| 2560 | case 0x38: \ |
| 2561 | /* ORR rd, rn, imm */ \ |
| 2562 | arm_data_proc(reg[rn] | imm, imm); \ |
| 2563 | break; \ |
| 2564 | \ |
| 2565 | case 0x39: \ |
| 2566 | /* ORRS rd, rn, imm */ \ |
| 2567 | arm_data_proc_logic_flags(reg[rn] | imm, imm); \ |
| 2568 | break; \ |
| 2569 | \ |
| 2570 | case 0x3A: \ |
| 2571 | /* MOV rd, imm */ \ |
| 2572 | arm_data_proc(imm, imm); \ |
| 2573 | break; \ |
| 2574 | \ |
| 2575 | case 0x3B: \ |
| 2576 | /* MOVS rd, imm */ \ |
| 2577 | arm_data_proc_logic_flags(imm, imm); \ |
| 2578 | break; \ |
| 2579 | \ |
| 2580 | case 0x3C: \ |
| 2581 | /* BIC rd, rn, imm */ \ |
| 2582 | arm_data_proc(reg[rn] & (~imm), imm); \ |
| 2583 | break; \ |
| 2584 | \ |
| 2585 | case 0x3D: \ |
| 2586 | /* BICS rd, rn, imm */ \ |
| 2587 | arm_data_proc_logic_flags(reg[rn] & (~imm), imm); \ |
| 2588 | break; \ |
| 2589 | \ |
| 2590 | case 0x3E: \ |
| 2591 | /* MVN rd, imm */ \ |
| 2592 | arm_data_proc(~imm, imm); \ |
| 2593 | break; \ |
| 2594 | \ |
| 2595 | case 0x3F: \ |
| 2596 | /* MVNS rd, imm */ \ |
| 2597 | arm_data_proc_logic_flags(~imm, imm); \ |
| 2598 | break; \ |
| 2599 | \ |
| 2600 | case 0x40: \ |
| 2601 | /* STR rd, [rn], -imm */ \ |
| 2602 | arm_access_memory(store, no_op, imm, u32, yes, - offset); \ |
| 2603 | break; \ |
| 2604 | \ |
| 2605 | case 0x41: \ |
| 2606 | /* LDR rd, [rn], -imm */ \ |
| 2607 | arm_access_memory(load, no_op, imm, u32, yes, - offset); \ |
| 2608 | break; \ |
| 2609 | \ |
| 2610 | case 0x42: \ |
| 2611 | /* STRT rd, [rn], -imm */ \ |
| 2612 | arm_access_memory(store, no_op, imm, u32, yes, - offset); \ |
| 2613 | break; \ |
| 2614 | \ |
| 2615 | case 0x43: \ |
| 2616 | /* LDRT rd, [rn], -imm */ \ |
| 2617 | arm_access_memory(load, no_op, imm, u32, yes, - offset); \ |
| 2618 | break; \ |
| 2619 | \ |
| 2620 | case 0x44: \ |
| 2621 | /* STRB rd, [rn], -imm */ \ |
| 2622 | arm_access_memory(store, no_op, imm, u8, yes, - offset); \ |
| 2623 | break; \ |
| 2624 | \ |
| 2625 | case 0x45: \ |
| 2626 | /* LDRB rd, [rn], -imm */ \ |
| 2627 | arm_access_memory(load, no_op, imm, u8, yes, - offset); \ |
| 2628 | break; \ |
| 2629 | \ |
| 2630 | case 0x46: \ |
| 2631 | /* STRBT rd, [rn], -imm */ \ |
| 2632 | arm_access_memory(store, no_op, imm, u8, yes, - offset); \ |
| 2633 | break; \ |
| 2634 | \ |
| 2635 | case 0x47: \ |
| 2636 | /* LDRBT rd, [rn], -imm */ \ |
| 2637 | arm_access_memory(load, no_op, imm, u8, yes, - offset); \ |
| 2638 | break; \ |
| 2639 | \ |
| 2640 | case 0x48: \ |
| 2641 | /* STR rd, [rn], +imm */ \ |
| 2642 | arm_access_memory(store, no_op, imm, u32, yes, + offset); \ |
| 2643 | break; \ |
| 2644 | \ |
| 2645 | case 0x49: \ |
| 2646 | /* LDR rd, [rn], +imm */ \ |
| 2647 | arm_access_memory(load, no_op, imm, u32, yes, + offset); \ |
| 2648 | break; \ |
| 2649 | \ |
| 2650 | case 0x4A: \ |
| 2651 | /* STRT rd, [rn], +imm */ \ |
| 2652 | arm_access_memory(store, no_op, imm, u32, yes, + offset); \ |
| 2653 | break; \ |
| 2654 | \ |
| 2655 | case 0x4B: \ |
| 2656 | /* LDRT rd, [rn], +imm */ \ |
| 2657 | arm_access_memory(load, no_op, imm, u32, yes, + offset); \ |
| 2658 | break; \ |
| 2659 | \ |
| 2660 | case 0x4C: \ |
| 2661 | /* STRB rd, [rn], +imm */ \ |
| 2662 | arm_access_memory(store, no_op, imm, u8, yes, + offset); \ |
| 2663 | break; \ |
| 2664 | \ |
| 2665 | case 0x4D: \ |
| 2666 | /* LDRB rd, [rn], +imm */ \ |
| 2667 | arm_access_memory(load, no_op, imm, u8, yes, + offset); \ |
| 2668 | break; \ |
| 2669 | \ |
| 2670 | case 0x4E: \ |
| 2671 | /* STRBT rd, [rn], +imm */ \ |
| 2672 | arm_access_memory(store, no_op, imm, u8, yes, + offset); \ |
| 2673 | break; \ |
| 2674 | \ |
| 2675 | case 0x4F: \ |
| 2676 | /* LDRBT rd, [rn], +imm */ \ |
| 2677 | arm_access_memory(load, no_op, imm, u8, yes, + offset); \ |
| 2678 | break; \ |
| 2679 | \ |
| 2680 | case 0x50: \ |
| 2681 | /* STR rd, [rn - imm] */ \ |
| 2682 | arm_access_memory(store, - offset, imm, u32, no, no_op); \ |
| 2683 | break; \ |
| 2684 | \ |
| 2685 | case 0x51: \ |
| 2686 | /* LDR rd, [rn - imm] */ \ |
| 2687 | arm_access_memory(load, - offset, imm, u32, no, no_op); \ |
| 2688 | break; \ |
| 2689 | \ |
| 2690 | case 0x52: \ |
| 2691 | /* STR rd, [rn - imm]! */ \ |
| 2692 | arm_access_memory(store, - offset, imm, u32, yes, no_op); \ |
| 2693 | break; \ |
| 2694 | \ |
| 2695 | case 0x53: \ |
| 2696 | /* LDR rd, [rn - imm]! */ \ |
| 2697 | arm_access_memory(load, - offset, imm, u32, yes, no_op); \ |
| 2698 | break; \ |
| 2699 | \ |
| 2700 | case 0x54: \ |
| 2701 | /* STRB rd, [rn - imm] */ \ |
| 2702 | arm_access_memory(store, - offset, imm, u8, no, no_op); \ |
| 2703 | break; \ |
| 2704 | \ |
| 2705 | case 0x55: \ |
| 2706 | /* LDRB rd, [rn - imm] */ \ |
| 2707 | arm_access_memory(load, - offset, imm, u8, no, no_op); \ |
| 2708 | break; \ |
| 2709 | \ |
| 2710 | case 0x56: \ |
| 2711 | /* STRB rd, [rn - imm]! */ \ |
| 2712 | arm_access_memory(store, - offset, imm, u8, yes, no_op); \ |
| 2713 | break; \ |
| 2714 | \ |
| 2715 | case 0x57: \ |
| 2716 | /* LDRB rd, [rn - imm]! */ \ |
| 2717 | arm_access_memory(load, - offset, imm, u8, yes, no_op); \ |
| 2718 | break; \ |
| 2719 | \ |
| 2720 | case 0x58: \ |
| 2721 | /* STR rd, [rn + imm] */ \ |
| 2722 | arm_access_memory(store, + offset, imm, u32, no, no_op); \ |
| 2723 | break; \ |
| 2724 | \ |
| 2725 | case 0x59: \ |
| 2726 | /* LDR rd, [rn + imm] */ \ |
| 2727 | arm_access_memory(load, + offset, imm, u32, no, no_op); \ |
| 2728 | break; \ |
| 2729 | \ |
| 2730 | case 0x5A: \ |
| 2731 | /* STR rd, [rn + imm]! */ \ |
| 2732 | arm_access_memory(store, + offset, imm, u32, yes, no_op); \ |
| 2733 | break; \ |
| 2734 | \ |
| 2735 | case 0x5B: \ |
| 2736 | /* LDR rd, [rn + imm]! */ \ |
| 2737 | arm_access_memory(load, + offset, imm, u32, yes, no_op); \ |
| 2738 | break; \ |
| 2739 | \ |
| 2740 | case 0x5C: \ |
| 2741 | /* STRB rd, [rn + imm] */ \ |
| 2742 | arm_access_memory(store, + offset, imm, u8, no, no_op); \ |
| 2743 | break; \ |
| 2744 | \ |
| 2745 | case 0x5D: \ |
| 2746 | /* LDRB rd, [rn + imm] */ \ |
| 2747 | arm_access_memory(load, + offset, imm, u8, no, no_op); \ |
| 2748 | break; \ |
| 2749 | \ |
| 2750 | case 0x5E: \ |
| 2751 | /* STRB rd, [rn + imm]! */ \ |
| 2752 | arm_access_memory(store, + offset, imm, u8, yes, no_op); \ |
| 2753 | break; \ |
| 2754 | \ |
| 2755 | case 0x5F: \ |
| 2756 | /* LDRBT rd, [rn + imm]! */ \ |
| 2757 | arm_access_memory(load, + offset, imm, u8, yes, no_op); \ |
| 2758 | break; \ |
| 2759 | \ |
| 2760 | case 0x60: \ |
| 2761 | /* STR rd, [rn], -reg_op */ \ |
| 2762 | arm_access_memory(store, no_op, reg, u32, yes, - reg_offset); \ |
| 2763 | break; \ |
| 2764 | \ |
| 2765 | case 0x61: \ |
| 2766 | /* LDR rd, [rn], -reg_op */ \ |
| 2767 | arm_access_memory(load, no_op, reg, u32, yes, - reg_offset); \ |
| 2768 | break; \ |
| 2769 | \ |
| 2770 | case 0x62: \ |
| 2771 | /* STRT rd, [rn], -reg_op */ \ |
| 2772 | arm_access_memory(store, no_op, reg, u32, yes, - reg_offset); \ |
| 2773 | break; \ |
| 2774 | \ |
| 2775 | case 0x63: \ |
| 2776 | /* LDRT rd, [rn], -reg_op */ \ |
| 2777 | arm_access_memory(load, no_op, reg, u32, yes, - reg_offset); \ |
| 2778 | break; \ |
| 2779 | \ |
| 2780 | case 0x64: \ |
| 2781 | /* STRB rd, [rn], -reg_op */ \ |
| 2782 | arm_access_memory(store, no_op, reg, u8, yes, - reg_offset); \ |
| 2783 | break; \ |
| 2784 | \ |
| 2785 | case 0x65: \ |
| 2786 | /* LDRB rd, [rn], -reg_op */ \ |
| 2787 | arm_access_memory(load, no_op, reg, u8, yes, - reg_offset); \ |
| 2788 | break; \ |
| 2789 | \ |
| 2790 | case 0x66: \ |
| 2791 | /* STRBT rd, [rn], -reg_op */ \ |
| 2792 | arm_access_memory(store, no_op, reg, u8, yes, - reg_offset); \ |
| 2793 | break; \ |
| 2794 | \ |
| 2795 | case 0x67: \ |
| 2796 | /* LDRBT rd, [rn], -reg_op */ \ |
| 2797 | arm_access_memory(load, no_op, reg, u8, yes, - reg_offset); \ |
| 2798 | break; \ |
| 2799 | \ |
| 2800 | case 0x68: \ |
| 2801 | /* STR rd, [rn], +reg_op */ \ |
| 2802 | arm_access_memory(store, no_op, reg, u32, yes, + reg_offset); \ |
| 2803 | break; \ |
| 2804 | \ |
| 2805 | case 0x69: \ |
| 2806 | /* LDR rd, [rn], +reg_op */ \ |
| 2807 | arm_access_memory(load, no_op, reg, u32, yes, + reg_offset); \ |
| 2808 | break; \ |
| 2809 | \ |
| 2810 | case 0x6A: \ |
| 2811 | /* STRT rd, [rn], +reg_op */ \ |
| 2812 | arm_access_memory(store, no_op, reg, u32, yes, + reg_offset); \ |
| 2813 | break; \ |
| 2814 | \ |
| 2815 | case 0x6B: \ |
| 2816 | /* LDRT rd, [rn], +reg_op */ \ |
| 2817 | arm_access_memory(load, no_op, reg, u32, yes, + reg_offset); \ |
| 2818 | break; \ |
| 2819 | \ |
| 2820 | case 0x6C: \ |
| 2821 | /* STRB rd, [rn], +reg_op */ \ |
| 2822 | arm_access_memory(store, no_op, reg, u8, yes, + reg_offset); \ |
| 2823 | break; \ |
| 2824 | \ |
| 2825 | case 0x6D: \ |
| 2826 | /* LDRB rd, [rn], +reg_op */ \ |
| 2827 | arm_access_memory(load, no_op, reg, u8, yes, + reg_offset); \ |
| 2828 | break; \ |
| 2829 | \ |
| 2830 | case 0x6E: \ |
| 2831 | /* STRBT rd, [rn], +reg_op */ \ |
| 2832 | arm_access_memory(store, no_op, reg, u8, yes, + reg_offset); \ |
| 2833 | break; \ |
| 2834 | \ |
| 2835 | case 0x6F: \ |
| 2836 | /* LDRBT rd, [rn], +reg_op */ \ |
| 2837 | arm_access_memory(load, no_op, reg, u8, yes, + reg_offset); \ |
| 2838 | break; \ |
| 2839 | \ |
| 2840 | case 0x70: \ |
| 2841 | /* STR rd, [rn - reg_op] */ \ |
| 2842 | arm_access_memory(store, - reg_offset, reg, u32, no, no_op); \ |
| 2843 | break; \ |
| 2844 | \ |
| 2845 | case 0x71: \ |
| 2846 | /* LDR rd, [rn - reg_op] */ \ |
| 2847 | arm_access_memory(load, - reg_offset, reg, u32, no, no_op); \ |
| 2848 | break; \ |
| 2849 | \ |
| 2850 | case 0x72: \ |
| 2851 | /* STR rd, [rn - reg_op]! */ \ |
| 2852 | arm_access_memory(store, - reg_offset, reg, u32, yes, no_op); \ |
| 2853 | break; \ |
| 2854 | \ |
| 2855 | case 0x73: \ |
| 2856 | /* LDR rd, [rn - reg_op]! */ \ |
| 2857 | arm_access_memory(load, - reg_offset, reg, u32, yes, no_op); \ |
| 2858 | break; \ |
| 2859 | \ |
| 2860 | case 0x74: \ |
| 2861 | /* STRB rd, [rn - reg_op] */ \ |
| 2862 | arm_access_memory(store, - reg_offset, reg, u8, no, no_op); \ |
| 2863 | break; \ |
| 2864 | \ |
| 2865 | case 0x75: \ |
| 2866 | /* LDRB rd, [rn - reg_op] */ \ |
| 2867 | arm_access_memory(load, - reg_offset, reg, u8, no, no_op); \ |
| 2868 | break; \ |
| 2869 | \ |
| 2870 | case 0x76: \ |
| 2871 | /* STRB rd, [rn - reg_op]! */ \ |
| 2872 | arm_access_memory(store, - reg_offset, reg, u8, yes, no_op); \ |
| 2873 | break; \ |
| 2874 | \ |
| 2875 | case 0x77: \ |
| 2876 | /* LDRB rd, [rn - reg_op]! */ \ |
| 2877 | arm_access_memory(load, - reg_offset, reg, u8, yes, no_op); \ |
| 2878 | break; \ |
| 2879 | \ |
| 2880 | case 0x78: \ |
| 2881 | /* STR rd, [rn + reg_op] */ \ |
| 2882 | arm_access_memory(store, + reg_offset, reg, u32, no, no_op); \ |
| 2883 | break; \ |
| 2884 | \ |
| 2885 | case 0x79: \ |
| 2886 | /* LDR rd, [rn + reg_op] */ \ |
| 2887 | arm_access_memory(load, + reg_offset, reg, u32, no, no_op); \ |
| 2888 | break; \ |
| 2889 | \ |
| 2890 | case 0x7A: \ |
| 2891 | /* STR rd, [rn + reg_op]! */ \ |
| 2892 | arm_access_memory(store, + reg_offset, reg, u32, yes, no_op); \ |
| 2893 | break; \ |
| 2894 | \ |
| 2895 | case 0x7B: \ |
| 2896 | /* LDR rd, [rn + reg_op]! */ \ |
| 2897 | arm_access_memory(load, + reg_offset, reg, u32, yes, no_op); \ |
| 2898 | break; \ |
| 2899 | \ |
| 2900 | case 0x7C: \ |
| 2901 | /* STRB rd, [rn + reg_op] */ \ |
| 2902 | arm_access_memory(store, + reg_offset, reg, u8, no, no_op); \ |
| 2903 | break; \ |
| 2904 | \ |
| 2905 | case 0x7D: \ |
| 2906 | /* LDRB rd, [rn + reg_op] */ \ |
| 2907 | arm_access_memory(load, + reg_offset, reg, u8, no, no_op); \ |
| 2908 | break; \ |
| 2909 | \ |
| 2910 | case 0x7E: \ |
| 2911 | /* STRB rd, [rn + reg_op]! */ \ |
| 2912 | arm_access_memory(store, + reg_offset, reg, u8, yes, no_op); \ |
| 2913 | break; \ |
| 2914 | \ |
| 2915 | case 0x7F: \ |
| 2916 | /* LDRBT rd, [rn + reg_op]! */ \ |
| 2917 | arm_access_memory(load, + reg_offset, reg, u8, yes, no_op); \ |
| 2918 | break; \ |
| 2919 | \ |
| 2920 | case 0x80: \ |
| 2921 | /* STMDA rn, rlist */ \ |
| 2922 | arm_block_memory(store, down_a, no, no); \ |
| 2923 | break; \ |
| 2924 | \ |
| 2925 | case 0x81: \ |
| 2926 | /* LDMDA rn, rlist */ \ |
| 2927 | arm_block_memory(load, down_a, no, no); \ |
| 2928 | break; \ |
| 2929 | \ |
| 2930 | case 0x82: \ |
| 2931 | /* STMDA rn!, rlist */ \ |
| 2932 | arm_block_memory(store, down_a, down, no); \ |
| 2933 | break; \ |
| 2934 | \ |
| 2935 | case 0x83: \ |
| 2936 | /* LDMDA rn!, rlist */ \ |
| 2937 | arm_block_memory(load, down_a, down, no); \ |
| 2938 | break; \ |
| 2939 | \ |
| 2940 | case 0x84: \ |
| 2941 | /* STMDA rn, rlist^ */ \ |
| 2942 | arm_block_memory(store, down_a, no, yes); \ |
| 2943 | break; \ |
| 2944 | \ |
| 2945 | case 0x85: \ |
| 2946 | /* LDMDA rn, rlist^ */ \ |
| 2947 | arm_block_memory(load, down_a, no, yes); \ |
| 2948 | break; \ |
| 2949 | \ |
| 2950 | case 0x86: \ |
| 2951 | /* STMDA rn!, rlist^ */ \ |
| 2952 | arm_block_memory(store, down_a, down, yes); \ |
| 2953 | break; \ |
| 2954 | \ |
| 2955 | case 0x87: \ |
| 2956 | /* LDMDA rn!, rlist^ */ \ |
| 2957 | arm_block_memory(load, down_a, down, yes); \ |
| 2958 | break; \ |
| 2959 | \ |
| 2960 | case 0x88: \ |
| 2961 | /* STMIA rn, rlist */ \ |
| 2962 | arm_block_memory(store, no, no, no); \ |
| 2963 | break; \ |
| 2964 | \ |
| 2965 | case 0x89: \ |
| 2966 | /* LDMIA rn, rlist */ \ |
| 2967 | arm_block_memory(load, no, no, no); \ |
| 2968 | break; \ |
| 2969 | \ |
| 2970 | case 0x8A: \ |
| 2971 | /* STMIA rn!, rlist */ \ |
| 2972 | arm_block_memory(store, no, up, no); \ |
| 2973 | break; \ |
| 2974 | \ |
| 2975 | case 0x8B: \ |
| 2976 | /* LDMIA rn!, rlist */ \ |
| 2977 | arm_block_memory(load, no, up, no); \ |
| 2978 | break; \ |
| 2979 | \ |
| 2980 | case 0x8C: \ |
| 2981 | /* STMIA rn, rlist^ */ \ |
| 2982 | arm_block_memory(store, no, no, yes); \ |
| 2983 | break; \ |
| 2984 | \ |
| 2985 | case 0x8D: \ |
| 2986 | /* LDMIA rn, rlist^ */ \ |
| 2987 | arm_block_memory(load, no, no, yes); \ |
| 2988 | break; \ |
| 2989 | \ |
| 2990 | case 0x8E: \ |
| 2991 | /* STMIA rn!, rlist^ */ \ |
| 2992 | arm_block_memory(store, no, up, yes); \ |
| 2993 | break; \ |
| 2994 | \ |
| 2995 | case 0x8F: \ |
| 2996 | /* LDMIA rn!, rlist^ */ \ |
| 2997 | arm_block_memory(load, no, up, yes); \ |
| 2998 | break; \ |
| 2999 | \ |
| 3000 | case 0x90: \ |
| 3001 | /* STMDB rn, rlist */ \ |
| 3002 | arm_block_memory(store, down_b, no, no); \ |
| 3003 | break; \ |
| 3004 | \ |
| 3005 | case 0x91: \ |
| 3006 | /* LDMDB rn, rlist */ \ |
| 3007 | arm_block_memory(load, down_b, no, no); \ |
| 3008 | break; \ |
| 3009 | \ |
| 3010 | case 0x92: \ |
| 3011 | /* STMDB rn!, rlist */ \ |
| 3012 | arm_block_memory(store, down_b, down, no); \ |
| 3013 | break; \ |
| 3014 | \ |
| 3015 | case 0x93: \ |
| 3016 | /* LDMDB rn!, rlist */ \ |
| 3017 | arm_block_memory(load, down_b, down, no); \ |
| 3018 | break; \ |
| 3019 | \ |
| 3020 | case 0x94: \ |
| 3021 | /* STMDB rn, rlist^ */ \ |
| 3022 | arm_block_memory(store, down_b, no, yes); \ |
| 3023 | break; \ |
| 3024 | \ |
| 3025 | case 0x95: \ |
| 3026 | /* LDMDB rn, rlist^ */ \ |
| 3027 | arm_block_memory(load, down_b, no, yes); \ |
| 3028 | break; \ |
| 3029 | \ |
| 3030 | case 0x96: \ |
| 3031 | /* STMDB rn!, rlist^ */ \ |
| 3032 | arm_block_memory(store, down_b, down, yes); \ |
| 3033 | break; \ |
| 3034 | \ |
| 3035 | case 0x97: \ |
| 3036 | /* LDMDB rn!, rlist^ */ \ |
| 3037 | arm_block_memory(load, down_b, down, yes); \ |
| 3038 | break; \ |
| 3039 | \ |
| 3040 | case 0x98: \ |
| 3041 | /* STMIB rn, rlist */ \ |
| 3042 | arm_block_memory(store, up, no, no); \ |
| 3043 | break; \ |
| 3044 | \ |
| 3045 | case 0x99: \ |
| 3046 | /* LDMIB rn, rlist */ \ |
| 3047 | arm_block_memory(load, up, no, no); \ |
| 3048 | break; \ |
| 3049 | \ |
| 3050 | case 0x9A: \ |
| 3051 | /* STMIB rn!, rlist */ \ |
| 3052 | arm_block_memory(store, up, up, no); \ |
| 3053 | break; \ |
| 3054 | \ |
| 3055 | case 0x9B: \ |
| 3056 | /* LDMIB rn!, rlist */ \ |
| 3057 | arm_block_memory(load, up, up, no); \ |
| 3058 | break; \ |
| 3059 | \ |
| 3060 | case 0x9C: \ |
| 3061 | /* STMIB rn, rlist^ */ \ |
| 3062 | arm_block_memory(store, up, no, yes); \ |
| 3063 | break; \ |
| 3064 | \ |
| 3065 | case 0x9D: \ |
| 3066 | /* LDMIB rn, rlist^ */ \ |
| 3067 | arm_block_memory(load, up, no, yes); \ |
| 3068 | break; \ |
| 3069 | \ |
| 3070 | case 0x9E: \ |
| 3071 | /* STMIB rn!, rlist^ */ \ |
| 3072 | arm_block_memory(store, up, up, yes); \ |
| 3073 | break; \ |
| 3074 | \ |
| 3075 | case 0x9F: \ |
| 3076 | /* LDMIB rn!, rlist^ */ \ |
| 3077 | arm_block_memory(load, up, up, yes); \ |
| 3078 | break; \ |
| 3079 | \ |
| 3080 | case 0xA0: \ |
| 3081 | case 0xA1: \ |
| 3082 | case 0xA2: \ |
| 3083 | case 0xA3: \ |
| 3084 | case 0xA4: \ |
| 3085 | case 0xA5: \ |
| 3086 | case 0xA6: \ |
| 3087 | case 0xA7: \ |
| 3088 | case 0xA8: \ |
| 3089 | case 0xA9: \ |
| 3090 | case 0xAA: \ |
| 3091 | case 0xAB: \ |
| 3092 | case 0xAC: \ |
| 3093 | case 0xAD: \ |
| 3094 | case 0xAE: \ |
| 3095 | case 0xAF: \ |
| 3096 | { \ |
| 3097 | /* B offset */ \ |
| 3098 | arm_decode_branch(); \ |
| 3099 | arm_pc_offset_update(offset + 8); \ |
| 3100 | break; \ |
| 3101 | } \ |
| 3102 | \ |
| 3103 | case 0xB0 ... 0xBF: \ |
| 3104 | { \ |
| 3105 | /* BL offset */ \ |
| 3106 | arm_decode_branch(); \ |
| 3107 | reg[REG_LR] = pc + 4; \ |
| 3108 | arm_pc_offset_update(offset + 8); \ |
| 3109 | break; \ |
| 3110 | } \ |
| 3111 | \ |
| 3112 | case 0xC0 ... 0xEF: \ |
| 3113 | /* coprocessor instructions, reserved on GBA */ \ |
| 3114 | break; \ |
| 3115 | \ |
| 3116 | case 0xF0 ... 0xFF: \ |
| 3117 | { \ |
| 3118 | /* SWI comment */ \ |
| 3119 | u32 swi_comment = opcode & 0x00FFFFFF; \ |
| 3120 | \ |
| 3121 | switch(swi_comment >> 16) \ |
| 3122 | { \ |
| 3123 | /* Jump to BIOS SWI handler */ \ |
| 3124 | default: \ |
| 3125 | reg_mode[MODE_SUPERVISOR][6] = pc + 4; \ |
| 3126 | collapse_flags(); \ |
| 3127 | spsr[MODE_SUPERVISOR] = reg[REG_CPSR]; \ |
| 3128 | reg[REG_PC] = 0x00000008; \ |
| 3129 | arm_update_pc(); \ |
| 3130 | reg[REG_CPSR] = (reg[REG_CPSR] & ~0x1F) | 0x13; \ |
| 3131 | set_cpu_mode(MODE_SUPERVISOR); \ |
| 3132 | break; \ |
| 3133 | } \ |
| 3134 | break; \ |
| 3135 | } \ |
| 3136 | } \ |
| 3137 | \ |
| 3138 | skip_instruction: \ |
| 3139 | |
| 3140 | #define execute_thumb_instruction() \ |
| 3141 | using_instruction(thumb); \ |
| 3142 | check_pc_region(); \ |
| 3143 | pc &= ~0x01; \ |
| 3144 | opcode = address16(pc_address_block, (pc & 0x7FFF)); \ |
| 3145 | \ |
| 3146 | switch((opcode >> 8) & 0xFF) \ |
| 3147 | { \ |
| 3148 | case 0x00 ... 0x07: \ |
| 3149 | /* LSL rd, rs, offset */ \ |
| 3150 | thumb_shift(shift, lsl, imm); \ |
| 3151 | break; \ |
| 3152 | \ |
| 3153 | case 0x08 ... 0x0F: \ |
| 3154 | /* LSR rd, rs, offset */ \ |
| 3155 | thumb_shift(shift, lsr, imm); \ |
| 3156 | break; \ |
| 3157 | \ |
| 3158 | case 0x10 ... 0x17: \ |
| 3159 | /* ASR rd, rs, offset */ \ |
| 3160 | thumb_shift(shift, asr, imm); \ |
| 3161 | break; \ |
| 3162 | \ |
| 3163 | case 0x18 ... 0x19: \ |
| 3164 | /* ADD rd, rs, rn */ \ |
| 3165 | thumb_add(add_sub, rd, reg[rs], reg[rn]); \ |
| 3166 | break; \ |
| 3167 | \ |
| 3168 | case 0x1A ... 0x1B: \ |
| 3169 | /* SUB rd, rs, rn */ \ |
| 3170 | thumb_sub(add_sub, rd, reg[rs], reg[rn]); \ |
| 3171 | break; \ |
| 3172 | \ |
| 3173 | case 0x1C ... 0x1D: \ |
| 3174 | /* ADD rd, rs, imm */ \ |
| 3175 | thumb_add(add_sub_imm, rd, reg[rs], imm); \ |
| 3176 | break; \ |
| 3177 | \ |
| 3178 | case 0x1E ... 0x1F: \ |
| 3179 | /* SUB rd, rs, imm */ \ |
| 3180 | thumb_sub(add_sub_imm, rd, reg[rs], imm); \ |
| 3181 | break; \ |
| 3182 | \ |
| 3183 | case 0x20: \ |
| 3184 | /* MOV r0, imm */ \ |
| 3185 | thumb_logic(imm, 0, imm); \ |
| 3186 | break; \ |
| 3187 | \ |
| 3188 | case 0x21: \ |
| 3189 | /* MOV r1, imm */ \ |
| 3190 | thumb_logic(imm, 1, imm); \ |
| 3191 | break; \ |
| 3192 | \ |
| 3193 | case 0x22: \ |
| 3194 | /* MOV r2, imm */ \ |
| 3195 | thumb_logic(imm, 2, imm); \ |
| 3196 | break; \ |
| 3197 | \ |
| 3198 | case 0x23: \ |
| 3199 | /* MOV r3, imm */ \ |
| 3200 | thumb_logic(imm, 3, imm); \ |
| 3201 | break; \ |
| 3202 | \ |
| 3203 | case 0x24: \ |
| 3204 | /* MOV r4, imm */ \ |
| 3205 | thumb_logic(imm, 4, imm); \ |
| 3206 | break; \ |
| 3207 | \ |
| 3208 | case 0x25: \ |
| 3209 | /* MOV r5, imm */ \ |
| 3210 | thumb_logic(imm, 5, imm); \ |
| 3211 | break; \ |
| 3212 | \ |
| 3213 | case 0x26: \ |
| 3214 | /* MOV r6, imm */ \ |
| 3215 | thumb_logic(imm, 6, imm); \ |
| 3216 | break; \ |
| 3217 | \ |
| 3218 | case 0x27: \ |
| 3219 | /* MOV r7, imm */ \ |
| 3220 | thumb_logic(imm, 7, imm); \ |
| 3221 | break; \ |
| 3222 | \ |
| 3223 | case 0x28: \ |
| 3224 | /* CMP r0, imm */ \ |
| 3225 | thumb_test_sub(imm, reg[0], imm); \ |
| 3226 | break; \ |
| 3227 | \ |
| 3228 | case 0x29: \ |
| 3229 | /* CMP r1, imm */ \ |
| 3230 | thumb_test_sub(imm, reg[1], imm); \ |
| 3231 | break; \ |
| 3232 | \ |
| 3233 | case 0x2A: \ |
| 3234 | /* CMP r2, imm */ \ |
| 3235 | thumb_test_sub(imm, reg[2], imm); \ |
| 3236 | break; \ |
| 3237 | \ |
| 3238 | case 0x2B: \ |
| 3239 | /* CMP r3, imm */ \ |
| 3240 | thumb_test_sub(imm, reg[3], imm); \ |
| 3241 | break; \ |
| 3242 | \ |
| 3243 | case 0x2C: \ |
| 3244 | /* CMP r4, imm */ \ |
| 3245 | thumb_test_sub(imm, reg[4], imm); \ |
| 3246 | break; \ |
| 3247 | \ |
| 3248 | case 0x2D: \ |
| 3249 | /* CMP r5, imm */ \ |
| 3250 | thumb_test_sub(imm, reg[5], imm); \ |
| 3251 | break; \ |
| 3252 | \ |
| 3253 | case 0x2E: \ |
| 3254 | /* CMP r6, imm */ \ |
| 3255 | thumb_test_sub(imm, reg[6], imm); \ |
| 3256 | break; \ |
| 3257 | \ |
| 3258 | case 0x2F: \ |
| 3259 | /* CMP r7, imm */ \ |
| 3260 | thumb_test_sub(imm, reg[7], imm); \ |
| 3261 | break; \ |
| 3262 | \ |
| 3263 | case 0x30: \ |
| 3264 | /* ADD r0, imm */ \ |
| 3265 | thumb_add(imm, 0, reg[0], imm); \ |
| 3266 | break; \ |
| 3267 | \ |
| 3268 | case 0x31: \ |
| 3269 | /* ADD r1, imm */ \ |
| 3270 | thumb_add(imm, 1, reg[1], imm); \ |
| 3271 | break; \ |
| 3272 | \ |
| 3273 | case 0x32: \ |
| 3274 | /* ADD r2, imm */ \ |
| 3275 | thumb_add(imm, 2, reg[2], imm); \ |
| 3276 | break; \ |
| 3277 | \ |
| 3278 | case 0x33: \ |
| 3279 | /* ADD r3, imm */ \ |
| 3280 | thumb_add(imm, 3, reg[3], imm); \ |
| 3281 | break; \ |
| 3282 | \ |
| 3283 | case 0x34: \ |
| 3284 | /* ADD r4, imm */ \ |
| 3285 | thumb_add(imm, 4, reg[4], imm); \ |
| 3286 | break; \ |
| 3287 | \ |
| 3288 | case 0x35: \ |
| 3289 | /* ADD r5, imm */ \ |
| 3290 | thumb_add(imm, 5, reg[5], imm); \ |
| 3291 | break; \ |
| 3292 | \ |
| 3293 | case 0x36: \ |
| 3294 | /* ADD r6, imm */ \ |
| 3295 | thumb_add(imm, 6, reg[6], imm); \ |
| 3296 | break; \ |
| 3297 | \ |
| 3298 | case 0x37: \ |
| 3299 | /* ADD r7, imm */ \ |
| 3300 | thumb_add(imm, 7, reg[7], imm); \ |
| 3301 | break; \ |
| 3302 | \ |
| 3303 | case 0x38: \ |
| 3304 | /* SUB r0, imm */ \ |
| 3305 | thumb_sub(imm, 0, reg[0], imm); \ |
| 3306 | break; \ |
| 3307 | \ |
| 3308 | case 0x39: \ |
| 3309 | /* SUB r1, imm */ \ |
| 3310 | thumb_sub(imm, 1, reg[1], imm); \ |
| 3311 | break; \ |
| 3312 | \ |
| 3313 | case 0x3A: \ |
| 3314 | /* SUB r2, imm */ \ |
| 3315 | thumb_sub(imm, 2, reg[2], imm); \ |
| 3316 | break; \ |
| 3317 | \ |
| 3318 | case 0x3B: \ |
| 3319 | /* SUB r3, imm */ \ |
| 3320 | thumb_sub(imm, 3, reg[3], imm); \ |
| 3321 | break; \ |
| 3322 | \ |
| 3323 | case 0x3C: \ |
| 3324 | /* SUB r4, imm */ \ |
| 3325 | thumb_sub(imm, 4, reg[4], imm); \ |
| 3326 | break; \ |
| 3327 | \ |
| 3328 | case 0x3D: \ |
| 3329 | /* SUB r5, imm */ \ |
| 3330 | thumb_sub(imm, 5, reg[5], imm); \ |
| 3331 | break; \ |
| 3332 | \ |
| 3333 | case 0x3E: \ |
| 3334 | /* SUB r6, imm */ \ |
| 3335 | thumb_sub(imm, 6, reg[6], imm); \ |
| 3336 | break; \ |
| 3337 | \ |
| 3338 | case 0x3F: \ |
| 3339 | /* SUB r7, imm */ \ |
| 3340 | thumb_sub(imm, 7, reg[7], imm); \ |
| 3341 | break; \ |
| 3342 | \ |
| 3343 | case 0x40: \ |
| 3344 | switch((opcode >> 6) & 0x03) \ |
| 3345 | { \ |
| 3346 | case 0x00: \ |
| 3347 | /* AND rd, rs */ \ |
| 3348 | thumb_logic(alu_op, rd, reg[rd] & reg[rs]); \ |
| 3349 | break; \ |
| 3350 | \ |
| 3351 | case 0x01: \ |
| 3352 | /* EOR rd, rs */ \ |
| 3353 | thumb_logic(alu_op, rd, reg[rd] ^ reg[rs]); \ |
| 3354 | break; \ |
| 3355 | \ |
| 3356 | case 0x02: \ |
| 3357 | /* LSL rd, rs */ \ |
| 3358 | thumb_shift(alu_op, lsl, reg); \ |
| 3359 | break; \ |
| 3360 | \ |
| 3361 | case 0x03: \ |
| 3362 | /* LSR rd, rs */ \ |
| 3363 | thumb_shift(alu_op, lsr, reg); \ |
| 3364 | break; \ |
| 3365 | } \ |
| 3366 | break; \ |
| 3367 | \ |
| 3368 | case 0x41: \ |
| 3369 | switch((opcode >> 6) & 0x03) \ |
| 3370 | { \ |
| 3371 | case 0x00: \ |
| 3372 | /* ASR rd, rs */ \ |
| 3373 | thumb_shift(alu_op, asr, reg); \ |
| 3374 | break; \ |
| 3375 | \ |
| 3376 | case 0x01: \ |
| 3377 | /* ADC rd, rs */ \ |
| 3378 | thumb_add(alu_op, rd, reg[rd] + reg[rs], c_flag); \ |
| 3379 | break; \ |
| 3380 | \ |
| 3381 | case 0x02: \ |
| 3382 | /* SBC rd, rs */ \ |
| 3383 | thumb_sub(alu_op, rd, reg[rd] - reg[rs], (c_flag ^ 1)); \ |
| 3384 | break; \ |
| 3385 | \ |
| 3386 | case 0x03: \ |
| 3387 | /* ROR rd, rs */ \ |
| 3388 | thumb_shift(alu_op, ror, reg); \ |
| 3389 | break; \ |
| 3390 | } \ |
| 3391 | break; \ |
| 3392 | \ |
| 3393 | case 0x42: \ |
| 3394 | switch((opcode >> 6) & 0x03) \ |
| 3395 | { \ |
| 3396 | case 0x00: \ |
| 3397 | /* TST rd, rs */ \ |
| 3398 | thumb_test_logic(alu_op, reg[rd] & reg[rs]); \ |
| 3399 | break; \ |
| 3400 | \ |
| 3401 | case 0x01: \ |
| 3402 | /* NEG rd, rs */ \ |
| 3403 | thumb_sub(alu_op, rd, 0, reg[rs]); \ |
| 3404 | break; \ |
| 3405 | \ |
| 3406 | case 0x02: \ |
| 3407 | /* CMP rd, rs */ \ |
| 3408 | thumb_test_sub(alu_op, reg[rd], reg[rs]); \ |
| 3409 | break; \ |
| 3410 | \ |
| 3411 | case 0x03: \ |
| 3412 | /* CMN rd, rs */ \ |
| 3413 | thumb_test_add(alu_op, reg[rd], reg[rs]); \ |
| 3414 | break; \ |
| 3415 | } \ |
| 3416 | break; \ |
| 3417 | \ |
| 3418 | case 0x43: \ |
| 3419 | switch((opcode >> 6) & 0x03) \ |
| 3420 | { \ |
| 3421 | case 0x00: \ |
| 3422 | /* ORR rd, rs */ \ |
| 3423 | thumb_logic(alu_op, rd, reg[rd] | reg[rs]); \ |
| 3424 | break; \ |
| 3425 | \ |
| 3426 | case 0x01: \ |
| 3427 | /* MUL rd, rs */ \ |
| 3428 | thumb_logic(alu_op, rd, reg[rd] * reg[rs]); \ |
| 3429 | break; \ |
| 3430 | \ |
| 3431 | case 0x02: \ |
| 3432 | /* BIC rd, rs */ \ |
| 3433 | thumb_logic(alu_op, rd, reg[rd] & (~reg[rs])); \ |
| 3434 | break; \ |
| 3435 | \ |
| 3436 | case 0x03: \ |
| 3437 | /* MVN rd, rs */ \ |
| 3438 | thumb_logic(alu_op, rd, ~reg[rs]); \ |
| 3439 | break; \ |
| 3440 | } \ |
| 3441 | break; \ |
| 3442 | \ |
| 3443 | case 0x44: \ |
| 3444 | /* ADD rd, rs */ \ |
| 3445 | thumb_hireg_op(reg[rd] + reg[rs]); \ |
| 3446 | break; \ |
| 3447 | \ |
| 3448 | case 0x45: \ |
| 3449 | /* CMP rd, rs */ \ |
| 3450 | { \ |
| 3451 | thumb_pc_offset(4); \ |
| 3452 | thumb_decode_hireg_op(); \ |
| 3453 | u32 _sa = reg[rd]; \ |
| 3454 | u32 _sb = reg[rs]; \ |
| 3455 | u32 dest = _sa - _sb; \ |
| 3456 | thumb_pc_offset(-2); \ |
| 3457 | calculate_flags_sub(dest, _sa, _sb); \ |
| 3458 | } \ |
| 3459 | break; \ |
| 3460 | \ |
| 3461 | case 0x46: \ |
| 3462 | /* MOV rd, rs */ \ |
| 3463 | thumb_hireg_op(reg[rs]); \ |
| 3464 | break; \ |
| 3465 | \ |
| 3466 | case 0x47: \ |
| 3467 | /* BX rs */ \ |
| 3468 | { \ |
| 3469 | thumb_decode_hireg_op(); \ |
| 3470 | u32 src; \ |
| 3471 | thumb_pc_offset(4); \ |
| 3472 | src = reg[rs]; \ |
| 3473 | if(src & 0x01) \ |
| 3474 | { \ |
| 3475 | src -= 1; \ |
| 3476 | thumb_pc_offset_update_direct(src); \ |
| 3477 | } \ |
| 3478 | else \ |
| 3479 | { \ |
| 3480 | /* Switch to ARM mode */ \ |
| 3481 | thumb_pc_offset_update_direct(src); \ |
| 3482 | reg[REG_CPSR] &= ~0x20; \ |
| 3483 | collapse_flags(); \ |
| 3484 | goto arm_loop; \ |
| 3485 | } \ |
| 3486 | } \ |
| 3487 | break; \ |
| 3488 | \ |
| 3489 | case 0x48: \ |
| 3490 | /* LDR r0, [pc + imm] */ \ |
| 3491 | thumb_access_memory(load, imm, (pc & ~2) + (imm * 4) + 4, reg[0], u32); \ |
| 3492 | break; \ |
| 3493 | \ |
| 3494 | case 0x49: \ |
| 3495 | /* LDR r1, [pc + imm] */ \ |
| 3496 | thumb_access_memory(load, imm, (pc & ~2) + (imm * 4) + 4, reg[1], u32); \ |
| 3497 | break; \ |
| 3498 | \ |
| 3499 | case 0x4A: \ |
| 3500 | /* LDR r2, [pc + imm] */ \ |
| 3501 | thumb_access_memory(load, imm, (pc & ~2) + (imm * 4) + 4, reg[2], u32); \ |
| 3502 | break; \ |
| 3503 | \ |
| 3504 | case 0x4B: \ |
| 3505 | /* LDR r3, [pc + imm] */ \ |
| 3506 | thumb_access_memory(load, imm, (pc & ~2) + (imm * 4) + 4, reg[3], u32); \ |
| 3507 | break; \ |
| 3508 | \ |
| 3509 | case 0x4C: \ |
| 3510 | /* LDR r4, [pc + imm] */ \ |
| 3511 | thumb_access_memory(load, imm, (pc & ~2) + (imm * 4) + 4, reg[4], u32); \ |
| 3512 | break; \ |
| 3513 | \ |
| 3514 | case 0x4D: \ |
| 3515 | /* LDR r5, [pc + imm] */ \ |
| 3516 | thumb_access_memory(load, imm, (pc & ~2) + (imm * 4) + 4, reg[5], u32); \ |
| 3517 | break; \ |
| 3518 | \ |
| 3519 | case 0x4E: \ |
| 3520 | /* LDR r6, [pc + imm] */ \ |
| 3521 | thumb_access_memory(load, imm, (pc & ~2) + (imm * 4) + 4, reg[6], u32); \ |
| 3522 | break; \ |
| 3523 | \ |
| 3524 | case 0x4F: \ |
| 3525 | /* LDR r7, [pc + imm] */ \ |
| 3526 | thumb_access_memory(load, imm, (pc & ~2) + (imm * 4) + 4, reg[7], u32); \ |
| 3527 | break; \ |
| 3528 | \ |
| 3529 | case 0x50 ... 0x51: \ |
| 3530 | /* STR rd, [rb + ro] */ \ |
| 3531 | thumb_access_memory(store, mem_reg, reg[rb] + reg[ro], reg[rd], u32); \ |
| 3532 | break; \ |
| 3533 | \ |
| 3534 | case 0x52 ... 0x53: \ |
| 3535 | /* STRH rd, [rb + ro] */ \ |
| 3536 | thumb_access_memory(store, mem_reg, reg[rb] + reg[ro], reg[rd], u16); \ |
| 3537 | break; \ |
| 3538 | \ |
| 3539 | case 0x54 ... 0x55: \ |
| 3540 | /* STRB rd, [rb + ro] */ \ |
| 3541 | thumb_access_memory(store, mem_reg, reg[rb] + reg[ro], reg[rd], u8); \ |
| 3542 | break; \ |
| 3543 | \ |
| 3544 | case 0x56 ... 0x57: \ |
| 3545 | /* LDSB rd, [rb + ro] */ \ |
| 3546 | thumb_access_memory(load, mem_reg, reg[rb] + reg[ro], reg[rd], s8); \ |
| 3547 | break; \ |
| 3548 | \ |
| 3549 | case 0x58 ... 0x59: \ |
| 3550 | /* LDR rd, [rb + ro] */ \ |
| 3551 | thumb_access_memory(load, mem_reg, reg[rb] + reg[ro], reg[rd], u32); \ |
| 3552 | break; \ |
| 3553 | \ |
| 3554 | case 0x5A ... 0x5B: \ |
| 3555 | /* LDRH rd, [rb + ro] */ \ |
| 3556 | thumb_access_memory(load, mem_reg, reg[rb] + reg[ro], reg[rd], u16); \ |
| 3557 | break; \ |
| 3558 | \ |
| 3559 | case 0x5C ... 0x5D: \ |
| 3560 | /* LDRB rd, [rb + ro] */ \ |
| 3561 | thumb_access_memory(load, mem_reg, reg[rb] + reg[ro], reg[rd], u8); \ |
| 3562 | break; \ |
| 3563 | \ |
| 3564 | case 0x5E ... 0x5F: \ |
| 3565 | /* LDSH rd, [rb + ro] */ \ |
| 3566 | thumb_access_memory(load, mem_reg, reg[rb] + reg[ro], reg[rd], s16); \ |
| 3567 | break; \ |
| 3568 | \ |
| 3569 | case 0x60 ... 0x67: \ |
| 3570 | /* STR rd, [rb + imm] */ \ |
| 3571 | thumb_access_memory(store, mem_imm, reg[rb] + (imm * 4), reg[rd], u32); \ |
| 3572 | break; \ |
| 3573 | \ |
| 3574 | case 0x68 ... 0x6F: \ |
| 3575 | /* LDR rd, [rb + imm] */ \ |
| 3576 | thumb_access_memory(load, mem_imm, reg[rb] + (imm * 4), reg[rd], u32); \ |
| 3577 | break; \ |
| 3578 | \ |
| 3579 | case 0x70 ... 0x77: \ |
| 3580 | /* STRB rd, [rb + imm] */ \ |
| 3581 | thumb_access_memory(store, mem_imm, reg[rb] + imm, reg[rd], u8); \ |
| 3582 | break; \ |
| 3583 | \ |
| 3584 | case 0x78 ... 0x7F: \ |
| 3585 | /* LDRB rd, [rb + imm] */ \ |
| 3586 | thumb_access_memory(load, mem_imm, reg[rb] + imm, reg[rd], u8); \ |
| 3587 | break; \ |
| 3588 | \ |
| 3589 | case 0x80 ... 0x87: \ |
| 3590 | /* STRH rd, [rb + imm] */ \ |
| 3591 | thumb_access_memory(store, mem_imm, reg[rb] + (imm * 2), reg[rd], u16); \ |
| 3592 | break; \ |
| 3593 | \ |
| 3594 | case 0x88 ... 0x8F: \ |
| 3595 | /* LDRH rd, [rb + imm] */ \ |
| 3596 | thumb_access_memory(load, mem_imm, reg[rb] + (imm * 2), reg[rd], u16); \ |
| 3597 | break; \ |
| 3598 | \ |
| 3599 | case 0x90: \ |
| 3600 | /* STR r0, [sp + imm] */ \ |
| 3601 | thumb_access_memory(store, imm, reg[REG_SP] + (imm * 4), reg[0], u32); \ |
| 3602 | break; \ |
| 3603 | \ |
| 3604 | case 0x91: \ |
| 3605 | /* STR r1, [sp + imm] */ \ |
| 3606 | thumb_access_memory(store, imm, reg[REG_SP] + (imm * 4), reg[1], u32); \ |
| 3607 | break; \ |
| 3608 | \ |
| 3609 | case 0x92: \ |
| 3610 | /* STR r2, [sp + imm] */ \ |
| 3611 | thumb_access_memory(store, imm, reg[REG_SP] + (imm * 4), reg[2], u32); \ |
| 3612 | break; \ |
| 3613 | \ |
| 3614 | case 0x93: \ |
| 3615 | /* STR r3, [sp + imm] */ \ |
| 3616 | thumb_access_memory(store, imm, reg[REG_SP] + (imm * 4), reg[3], u32); \ |
| 3617 | break; \ |
| 3618 | \ |
| 3619 | case 0x94: \ |
| 3620 | /* STR r4, [sp + imm] */ \ |
| 3621 | thumb_access_memory(store, imm, reg[REG_SP] + (imm * 4), reg[4], u32); \ |
| 3622 | break; \ |
| 3623 | \ |
| 3624 | case 0x95: \ |
| 3625 | /* STR r5, [sp + imm] */ \ |
| 3626 | thumb_access_memory(store, imm, reg[REG_SP] + (imm * 4), reg[5], u32); \ |
| 3627 | break; \ |
| 3628 | \ |
| 3629 | case 0x96: \ |
| 3630 | /* STR r6, [sp + imm] */ \ |
| 3631 | thumb_access_memory(store, imm, reg[REG_SP] + (imm * 4), reg[6], u32); \ |
| 3632 | break; \ |
| 3633 | \ |
| 3634 | case 0x97: \ |
| 3635 | /* STR r7, [sp + imm] */ \ |
| 3636 | thumb_access_memory(store, imm, reg[REG_SP] + (imm * 4), reg[7], u32); \ |
| 3637 | break; \ |
| 3638 | \ |
| 3639 | case 0x98: \ |
| 3640 | /* LDR r0, [sp + imm] */ \ |
| 3641 | thumb_access_memory(load, imm, reg[REG_SP] + (imm * 4), reg[0], u32); \ |
| 3642 | break; \ |
| 3643 | \ |
| 3644 | case 0x99: \ |
| 3645 | /* LDR r1, [sp + imm] */ \ |
| 3646 | thumb_access_memory(load, imm, reg[REG_SP] + (imm * 4), reg[1], u32); \ |
| 3647 | break; \ |
| 3648 | \ |
| 3649 | case 0x9A: \ |
| 3650 | /* LDR r2, [sp + imm] */ \ |
| 3651 | thumb_access_memory(load, imm, reg[REG_SP] + (imm * 4), reg[2], u32); \ |
| 3652 | break; \ |
| 3653 | \ |
| 3654 | case 0x9B: \ |
| 3655 | /* LDR r3, [sp + imm] */ \ |
| 3656 | thumb_access_memory(load, imm, reg[REG_SP] + (imm * 4), reg[3], u32); \ |
| 3657 | break; \ |
| 3658 | \ |
| 3659 | case 0x9C: \ |
| 3660 | /* LDR r4, [sp + imm] */ \ |
| 3661 | thumb_access_memory(load, imm, reg[REG_SP] + (imm * 4), reg[4], u32); \ |
| 3662 | break; \ |
| 3663 | \ |
| 3664 | case 0x9D: \ |
| 3665 | /* LDR r5, [sp + imm] */ \ |
| 3666 | thumb_access_memory(load, imm, reg[REG_SP] + (imm * 4), reg[5], u32); \ |
| 3667 | break; \ |
| 3668 | \ |
| 3669 | case 0x9E: \ |
| 3670 | /* LDR r6, [sp + imm] */ \ |
| 3671 | thumb_access_memory(load, imm, reg[REG_SP] + (imm * 4), reg[6], u32); \ |
| 3672 | break; \ |
| 3673 | \ |
| 3674 | case 0x9F: \ |
| 3675 | /* LDR r7, [sp + imm] */ \ |
| 3676 | thumb_access_memory(load, imm, reg[REG_SP] + (imm * 4), reg[7], u32); \ |
| 3677 | break; \ |
| 3678 | \ |
| 3679 | case 0xA0: \ |
| 3680 | /* ADD r0, pc, +imm */ \ |
| 3681 | thumb_add_noflags(imm, 0, (pc & ~2) + 4, (imm * 4)); \ |
| 3682 | break; \ |
| 3683 | \ |
| 3684 | case 0xA1: \ |
| 3685 | /* ADD r1, pc, +imm */ \ |
| 3686 | thumb_add_noflags(imm, 1, (pc & ~2) + 4, (imm * 4)); \ |
| 3687 | break; \ |
| 3688 | \ |
| 3689 | case 0xA2: \ |
| 3690 | /* ADD r2, pc, +imm */ \ |
| 3691 | thumb_add_noflags(imm, 2, (pc & ~2) + 4, (imm * 4)); \ |
| 3692 | break; \ |
| 3693 | \ |
| 3694 | case 0xA3: \ |
| 3695 | /* ADD r3, pc, +imm */ \ |
| 3696 | thumb_add_noflags(imm, 3, (pc & ~2) + 4, (imm * 4)); \ |
| 3697 | break; \ |
| 3698 | \ |
| 3699 | case 0xA4: \ |
| 3700 | /* ADD r4, pc, +imm */ \ |
| 3701 | thumb_add_noflags(imm, 4, (pc & ~2) + 4, (imm * 4)); \ |
| 3702 | break; \ |
| 3703 | \ |
| 3704 | case 0xA5: \ |
| 3705 | /* ADD r5, pc, +imm */ \ |
| 3706 | thumb_add_noflags(imm, 5, (pc & ~2) + 4, (imm * 4)); \ |
| 3707 | break; \ |
| 3708 | \ |
| 3709 | case 0xA6: \ |
| 3710 | /* ADD r6, pc, +imm */ \ |
| 3711 | thumb_add_noflags(imm, 6, (pc & ~2) + 4, (imm * 4)); \ |
| 3712 | break; \ |
| 3713 | \ |
| 3714 | case 0xA7: \ |
| 3715 | /* ADD r7, pc, +imm */ \ |
| 3716 | thumb_add_noflags(imm, 7, (pc & ~2) + 4, (imm * 4)); \ |
| 3717 | break; \ |
| 3718 | \ |
| 3719 | case 0xA8: \ |
| 3720 | /* ADD r0, sp, +imm */ \ |
| 3721 | thumb_add_noflags(imm, 0, reg[REG_SP], (imm * 4)); \ |
| 3722 | break; \ |
| 3723 | \ |
| 3724 | case 0xA9: \ |
| 3725 | /* ADD r1, sp, +imm */ \ |
| 3726 | thumb_add_noflags(imm, 1, reg[REG_SP], (imm * 4)); \ |
| 3727 | break; \ |
| 3728 | \ |
| 3729 | case 0xAA: \ |
| 3730 | /* ADD r2, sp, +imm */ \ |
| 3731 | thumb_add_noflags(imm, 2, reg[REG_SP], (imm * 4)); \ |
| 3732 | break; \ |
| 3733 | \ |
| 3734 | case 0xAB: \ |
| 3735 | /* ADD r3, sp, +imm */ \ |
| 3736 | thumb_add_noflags(imm, 3, reg[REG_SP], (imm * 4)); \ |
| 3737 | break; \ |
| 3738 | \ |
| 3739 | case 0xAC: \ |
| 3740 | /* ADD r4, sp, +imm */ \ |
| 3741 | thumb_add_noflags(imm, 4, reg[REG_SP], (imm * 4)); \ |
| 3742 | break; \ |
| 3743 | \ |
| 3744 | case 0xAD: \ |
| 3745 | /* ADD r5, sp, +imm */ \ |
| 3746 | thumb_add_noflags(imm, 5, reg[REG_SP], (imm * 4)); \ |
| 3747 | break; \ |
| 3748 | \ |
| 3749 | case 0xAE: \ |
| 3750 | /* ADD r6, sp, +imm */ \ |
| 3751 | thumb_add_noflags(imm, 6, reg[REG_SP], (imm * 4)); \ |
| 3752 | break; \ |
| 3753 | \ |
| 3754 | case 0xAF: \ |
| 3755 | /* ADD r7, sp, +imm */ \ |
| 3756 | thumb_add_noflags(imm, 7, reg[REG_SP], (imm * 4)); \ |
| 3757 | break; \ |
| 3758 | \ |
| 3759 | case 0xB0 ... 0xB3: \ |
| 3760 | if((opcode >> 7) & 0x01) \ |
| 3761 | { \ |
| 3762 | /* ADD sp, -imm */ \ |
| 3763 | thumb_add_noflags(add_sp, 13, reg[REG_SP], -(imm * 4)); \ |
| 3764 | } \ |
| 3765 | else \ |
| 3766 | { \ |
| 3767 | /* ADD sp, +imm */ \ |
| 3768 | thumb_add_noflags(add_sp, 13, reg[REG_SP], (imm * 4)); \ |
| 3769 | } \ |
| 3770 | break; \ |
| 3771 | \ |
| 3772 | case 0xB4: \ |
| 3773 | /* PUSH rlist */ \ |
| 3774 | thumb_block_memory(store, down, no_op, 13); \ |
| 3775 | break; \ |
| 3776 | \ |
| 3777 | case 0xB5: \ |
| 3778 | /* PUSH rlist, lr */ \ |
| 3779 | thumb_block_memory(store, push_lr, push_lr, 13); \ |
| 3780 | break; \ |
| 3781 | \ |
| 3782 | case 0xBC: \ |
| 3783 | /* POP rlist */ \ |
| 3784 | thumb_block_memory(load, no_op, up, 13); \ |
| 3785 | break; \ |
| 3786 | \ |
| 3787 | case 0xBD: \ |
| 3788 | /* POP rlist, pc */ \ |
| 3789 | thumb_block_memory(load, no_op, pop_pc, 13); \ |
| 3790 | break; \ |
| 3791 | \ |
| 3792 | case 0xC0: \ |
| 3793 | /* STMIA r0!, rlist */ \ |
| 3794 | thumb_block_memory(store, no_op, up, 0); \ |
| 3795 | break; \ |
| 3796 | \ |
| 3797 | case 0xC1: \ |
| 3798 | /* STMIA r1!, rlist */ \ |
| 3799 | thumb_block_memory(store, no_op, up, 1); \ |
| 3800 | break; \ |
| 3801 | \ |
| 3802 | case 0xC2: \ |
| 3803 | /* STMIA r2!, rlist */ \ |
| 3804 | thumb_block_memory(store, no_op, up, 2); \ |
| 3805 | break; \ |
| 3806 | \ |
| 3807 | case 0xC3: \ |
| 3808 | /* STMIA r3!, rlist */ \ |
| 3809 | thumb_block_memory(store, no_op, up, 3); \ |
| 3810 | break; \ |
| 3811 | \ |
| 3812 | case 0xC4: \ |
| 3813 | /* STMIA r4!, rlist */ \ |
| 3814 | thumb_block_memory(store, no_op, up, 4); \ |
| 3815 | break; \ |
| 3816 | \ |
| 3817 | case 0xC5: \ |
| 3818 | /* STMIA r5!, rlist */ \ |
| 3819 | thumb_block_memory(store, no_op, up, 5); \ |
| 3820 | break; \ |
| 3821 | \ |
| 3822 | case 0xC6: \ |
| 3823 | /* STMIA r6!, rlist */ \ |
| 3824 | thumb_block_memory(store, no_op, up, 6); \ |
| 3825 | break; \ |
| 3826 | \ |
| 3827 | case 0xC7: \ |
| 3828 | /* STMIA r7!, rlist */ \ |
| 3829 | thumb_block_memory(store, no_op, up, 7); \ |
| 3830 | break; \ |
| 3831 | \ |
| 3832 | case 0xC8: \ |
| 3833 | /* LDMIA r0!, rlist */ \ |
| 3834 | thumb_block_memory(load, no_op, up, 0); \ |
| 3835 | break; \ |
| 3836 | \ |
| 3837 | case 0xC9: \ |
| 3838 | /* LDMIA r1!, rlist */ \ |
| 3839 | thumb_block_memory(load, no_op, up, 1); \ |
| 3840 | break; \ |
| 3841 | \ |
| 3842 | case 0xCA: \ |
| 3843 | /* LDMIA r2!, rlist */ \ |
| 3844 | thumb_block_memory(load, no_op, up, 2); \ |
| 3845 | break; \ |
| 3846 | \ |
| 3847 | case 0xCB: \ |
| 3848 | /* LDMIA r3!, rlist */ \ |
| 3849 | thumb_block_memory(load, no_op, up, 3); \ |
| 3850 | break; \ |
| 3851 | \ |
| 3852 | case 0xCC: \ |
| 3853 | /* LDMIA r4!, rlist */ \ |
| 3854 | thumb_block_memory(load, no_op, up, 4); \ |
| 3855 | break; \ |
| 3856 | \ |
| 3857 | case 0xCD: \ |
| 3858 | /* LDMIA r5!, rlist */ \ |
| 3859 | thumb_block_memory(load, no_op, up, 5); \ |
| 3860 | break; \ |
| 3861 | \ |
| 3862 | case 0xCE: \ |
| 3863 | /* LDMIA r6!, rlist */ \ |
| 3864 | thumb_block_memory(load, no_op, up, 6); \ |
| 3865 | break; \ |
| 3866 | \ |
| 3867 | case 0xCF: \ |
| 3868 | /* LDMIA r7!, rlist */ \ |
| 3869 | thumb_block_memory(load, no_op, up, 7); \ |
| 3870 | break; \ |
| 3871 | \ |
| 3872 | case 0xD0: \ |
| 3873 | /* BEQ label */ \ |
| 3874 | thumb_conditional_branch(z_flag == 1); \ |
| 3875 | break; \ |
| 3876 | \ |
| 3877 | case 0xD1: \ |
| 3878 | /* BNE label */ \ |
| 3879 | thumb_conditional_branch(z_flag == 0); \ |
| 3880 | break; \ |
| 3881 | \ |
| 3882 | case 0xD2: \ |
| 3883 | /* BCS label */ \ |
| 3884 | thumb_conditional_branch(c_flag == 1); \ |
| 3885 | break; \ |
| 3886 | \ |
| 3887 | case 0xD3: \ |
| 3888 | /* BCC label */ \ |
| 3889 | thumb_conditional_branch(c_flag == 0); \ |
| 3890 | break; \ |
| 3891 | \ |
| 3892 | case 0xD4: \ |
| 3893 | /* BMI label */ \ |
| 3894 | thumb_conditional_branch(n_flag == 1); \ |
| 3895 | break; \ |
| 3896 | \ |
| 3897 | case 0xD5: \ |
| 3898 | /* BPL label */ \ |
| 3899 | thumb_conditional_branch(n_flag == 0); \ |
| 3900 | break; \ |
| 3901 | \ |
| 3902 | case 0xD6: \ |
| 3903 | /* BVS label */ \ |
| 3904 | thumb_conditional_branch(v_flag == 1); \ |
| 3905 | break; \ |
| 3906 | \ |
| 3907 | case 0xD7: \ |
| 3908 | /* BVC label */ \ |
| 3909 | thumb_conditional_branch(v_flag == 0); \ |
| 3910 | break; \ |
| 3911 | \ |
| 3912 | case 0xD8: \ |
| 3913 | /* BHI label */ \ |
| 3914 | thumb_conditional_branch(c_flag & (z_flag ^ 1)); \ |
| 3915 | break; \ |
| 3916 | \ |
| 3917 | case 0xD9: \ |
| 3918 | /* BLS label */ \ |
| 3919 | thumb_conditional_branch((c_flag == 0) | z_flag); \ |
| 3920 | break; \ |
| 3921 | \ |
| 3922 | case 0xDA: \ |
| 3923 | /* BGE label */ \ |
| 3924 | thumb_conditional_branch(n_flag == v_flag); \ |
| 3925 | break; \ |
| 3926 | \ |
| 3927 | case 0xDB: \ |
| 3928 | /* BLT label */ \ |
| 3929 | thumb_conditional_branch(n_flag != v_flag); \ |
| 3930 | break; \ |
| 3931 | \ |
| 3932 | case 0xDC: \ |
| 3933 | /* BGT label */ \ |
| 3934 | thumb_conditional_branch((z_flag == 0) & (n_flag == v_flag)); \ |
| 3935 | break; \ |
| 3936 | \ |
| 3937 | case 0xDD: \ |
| 3938 | /* BLE label */ \ |
| 3939 | thumb_conditional_branch(z_flag | (n_flag != v_flag)); \ |
| 3940 | break; \ |
| 3941 | \ |
| 3942 | case 0xDF: \ |
| 3943 | { \ |
| 3944 | /* SWI comment */ \ |
| 3945 | u32 swi_comment = opcode & 0xFF; \ |
| 3946 | \ |
| 3947 | switch(swi_comment) \ |
| 3948 | { \ |
| 3949 | default: \ |
| 3950 | reg_mode[MODE_SUPERVISOR][6] = pc + 2; \ |
| 3951 | spsr[MODE_SUPERVISOR] = reg[REG_CPSR]; \ |
| 3952 | reg[REG_PC] = 0x00000008; \ |
| 3953 | thumb_update_pc(); \ |
| 3954 | reg[REG_CPSR] = (reg[REG_CPSR] & ~0x3F) | 0x13; \ |
| 3955 | set_cpu_mode(MODE_SUPERVISOR); \ |
| 3956 | collapse_flags(); \ |
| 3957 | goto arm_loop; \ |
| 3958 | } \ |
| 3959 | break; \ |
| 3960 | } \ |
| 3961 | \ |
| 3962 | case 0xE0 ... 0xE7: \ |
| 3963 | { \ |
| 3964 | /* B label */ \ |
| 3965 | thumb_decode_branch(); \ |
| 3966 | thumb_pc_offset_update(((s32)(offset << 21) >> 20) + 4); \ |
| 3967 | break; \ |
| 3968 | } \ |
| 3969 | \ |
| 3970 | case 0xF0 ... 0xF7: \ |
| 3971 | { \ |
| 3972 | /* (low word) BL label */ \ |
| 3973 | thumb_decode_branch(); \ |
| 3974 | reg[REG_LR] = pc + 4 + ((s32)(offset << 21) >> 9); \ |
| 3975 | thumb_pc_offset(2); \ |
| 3976 | break; \ |
| 3977 | } \ |
| 3978 | \ |
| 3979 | case 0xF8 ... 0xFF: \ |
| 3980 | { \ |
| 3981 | /* (high word) BL label */ \ |
| 3982 | thumb_decode_branch(); \ |
| 3983 | u32 lr = (pc + 2) | 0x01; \ |
| 3984 | pc = reg[REG_LR] + (offset * 2); \ |
| 3985 | reg[REG_LR] = lr; \ |
| 3986 | reg[REG_PC] = pc; \ |
| 3987 | break; \ |
| 3988 | } \ |
| 3989 | } \ |
| 3990 | |
| 3991 | void print_arm_registers() |
| 3992 | { |
| 3993 | u32 i, i2, i3; |
| 3994 | |
| 3995 | for(i = 0, i3 = 0; i < 4; i++) |
| 3996 | { |
| 3997 | debug_screen_printf(" "); |
| 3998 | for(i2 = 0; i2 < 4; i2++, i3++) |
| 3999 | { |
| 4000 | debug_screen_printf("R%02d %08x ", i3, reg[i3]); |
| 4001 | } |
| 4002 | debug_screen_newline(1); |
| 4003 | } |
| 4004 | } |
| 4005 | |
| 4006 | void print_thumb_instruction() |
| 4007 | { |
| 4008 | debug_screen_printf("Thumb instruction at PC: %04x", |
| 4009 | read_memory16(reg[REG_PC])); |
| 4010 | debug_screen_newline(1); |
| 4011 | } |
| 4012 | |
| 4013 | void print_arm_instruction() |
| 4014 | { |
| 4015 | debug_screen_printf("ARM instruction at PC: %08x", |
| 4016 | read_memory32(reg[REG_PC])); |
| 4017 | debug_screen_newline(1); |
| 4018 | } |
| 4019 | |
| 4020 | void print_flags() |
| 4021 | { |
| 4022 | u32 cpsr = reg[REG_CPSR]; |
| 4023 | debug_screen_newline(1); |
| 4024 | debug_screen_printf( |
| 4025 | " N: %d Z: %d C: %d V: %d CPSR: %08x SPSR: %08x mode: %s", |
| 4026 | (cpsr >> 31) & 0x01, (cpsr >> 30) & 0x01, (cpsr >> 29) & 0x01, |
| 4027 | (cpsr >> 28) & 0x01, cpsr, spsr[reg[CPU_MODE]], |
| 4028 | cpu_mode_names[reg[CPU_MODE]]); |
| 4029 | debug_screen_newline(2); |
| 4030 | } |
| 4031 | |
| 4032 | const u32 stack_print_lines = 2; |
| 4033 | |
| 4034 | void print_stack() |
| 4035 | { |
| 4036 | u32 i, i2, i3; |
| 4037 | |
| 4038 | debug_screen_printf("Stack:"); |
| 4039 | debug_screen_newline(1); |
| 4040 | |
| 4041 | for(i = 0, i3 = reg[REG_SP]; i < stack_print_lines; i++) |
| 4042 | { |
| 4043 | for(i2 = 0; i2 < 5; i2++, i3 += 4) |
| 4044 | { |
| 4045 | debug_screen_printf(" %08x", read_memory32(i3)); |
| 4046 | } |
| 4047 | if(i != stack_print_lines) |
| 4048 | debug_screen_newline(1); |
| 4049 | } |
| 4050 | |
| 4051 | debug_screen_newline(1); |
| 4052 | } |
| 4053 | |
| 4054 | u32 instruction_count = 0; |
| 4055 | |
| 4056 | u32 output_field = 0; |
| 4057 | const u32 num_output_fields = 2; |
| 4058 | |
| 4059 | u32 last_instruction = 0; |
| 4060 | |
| 4061 | u32 in_interrupt = 0; |
| 4062 | |
| 4063 | void debug_on() |
| 4064 | { |
| 4065 | current_debug_state = STEP; |
| 4066 | debug_screen_start(); |
| 4067 | } |
| 4068 | |
| 4069 | void debug_off(debug_state new_debug_state) |
| 4070 | { |
| 4071 | current_debug_state = new_debug_state; |
| 4072 | debug_screen_end(); |
| 4073 | } |
| 4074 | |
| 4075 | void function_cc step_debug(u32 pc, u32 cycles) |
| 4076 | { |
| 4077 | u32 thumb = 0; |
| 4078 | |
| 4079 | reg[REG_PC] = pc; |
| 4080 | |
| 4081 | if(reg[REG_CPSR] & 0x20) |
| 4082 | thumb = 1; |
| 4083 | |
| 4084 | instruction_count++; |
| 4085 | |
| 4086 | switch(current_debug_state) |
| 4087 | { |
| 4088 | case PC_BREAKPOINT: |
| 4089 | if(reg[REG_PC] == breakpoint_value) |
| 4090 | debug_on(); |
| 4091 | |
| 4092 | break; |
| 4093 | |
| 4094 | case Z_BREAKPOINT: |
| 4095 | if(reg[REG_Z_FLAG] == 1) |
| 4096 | debug_on(); |
| 4097 | |
| 4098 | break; |
| 4099 | |
| 4100 | case VCOUNT_BREAKPOINT: |
| 4101 | if(io_registers[REG_VCOUNT] == breakpoint_value) |
| 4102 | debug_on(); |
| 4103 | |
| 4104 | break; |
| 4105 | |
| 4106 | case COUNTDOWN_BREAKPOINT: |
| 4107 | if(breakpoint_value == 0) |
| 4108 | debug_on(); |
| 4109 | else |
| 4110 | breakpoint_value--; |
| 4111 | |
| 4112 | break; |
| 4113 | |
| 4114 | case COUNTDOWN_BREAKPOINT_B: |
| 4115 | if(breakpoint_value == instruction_count) |
| 4116 | debug_on(); |
| 4117 | |
| 4118 | break; |
| 4119 | |
| 4120 | case COUNTDOWN_BREAKPOINT_C: |
| 4121 | { |
| 4122 | if(pc == 0x18) |
| 4123 | in_interrupt++; |
| 4124 | |
| 4125 | if((breakpoint_value == 0) && (in_interrupt == 0)) |
| 4126 | { |
| 4127 | debug_on(); |
| 4128 | } |
| 4129 | else |
| 4130 | |
| 4131 | if(in_interrupt == 0) |
| 4132 | breakpoint_value--; |
| 4133 | |
| 4134 | if(in_interrupt && (pc == 0x13c)) |
| 4135 | in_interrupt--; |
| 4136 | |
| 4137 | break; |
| 4138 | } |
| 4139 | |
| 4140 | default: |
| 4141 | break; |
| 4142 | } |
| 4143 | |
| 4144 | if((current_debug_state == STEP) || |
| 4145 | (current_debug_state == STEP_RUN)) |
| 4146 | { |
| 4147 | u32 key = 0; |
| 4148 | |
| 4149 | SDL_LockMutex(sound_mutex); |
| 4150 | SDL_PauseAudio(1); |
| 4151 | |
| 4152 | if(output_field >= num_output_fields) |
| 4153 | { |
| 4154 | output_field = 0; |
| 4155 | debug_screen_clear(); |
| 4156 | } |
| 4157 | |
| 4158 | if(thumb) |
| 4159 | print_thumb_instruction(cycles); |
| 4160 | else |
| 4161 | print_arm_instruction(cycles); |
| 4162 | |
| 4163 | print_arm_registers(); |
| 4164 | print_flags(); |
| 4165 | print_stack(); |
| 4166 | |
| 4167 | |
| 4168 | printf("%x instructions in, VCOUNT %d, cycles remaining: %d \n", |
| 4169 | instruction_count, io_registers[REG_VCOUNT], cycles); |
| 4170 | |
| 4171 | debug_screen_update(); |
| 4172 | output_field++; |
| 4173 | |
| 4174 | if(current_debug_state != STEP_RUN) |
| 4175 | { |
| 4176 | |
| 4177 | #ifdef STDIO_DEBUG |
| 4178 | key = getchar(); |
| 4179 | #else |
| 4180 | |
| 4181 | gui_action_type next_input = CURSOR_NONE; |
| 4182 | while(next_input == CURSOR_NONE) |
| 4183 | { |
| 4184 | next_input = get_gui_input(); |
| 4185 | |
| 4186 | switch(next_input) |
| 4187 | { |
| 4188 | case CURSOR_BACK: |
| 4189 | key = 'b'; |
| 4190 | break; |
| 4191 | |
| 4192 | case CURSOR_UP: |
| 4193 | key = 'r'; |
| 4194 | break; |
| 4195 | |
| 4196 | case CURSOR_EXIT: |
| 4197 | key = 'q'; |
| 4198 | break; |
| 4199 | |
| 4200 | default: |
| 4201 | key = 'n'; |
| 4202 | break; |
| 4203 | } |
| 4204 | } |
| 4205 | #endif |
| 4206 | } |
| 4207 | |
| 4208 | switch(key) |
| 4209 | { |
| 4210 | case 'd': |
| 4211 | dump_translation_cache(); |
| 4212 | break; |
| 4213 | |
| 4214 | case 'z': |
| 4215 | debug_off(Z_BREAKPOINT); |
| 4216 | break; |
| 4217 | |
| 4218 | #ifdef STDIO_DEBUG |
| 4219 | case 'x': |
| 4220 | printf("break at PC (hex): "); |
| 4221 | scanf("%08x", &breakpoint_value); |
| 4222 | debug_off(PC_BREAKPOINT); |
| 4223 | break; |
| 4224 | |
| 4225 | case 'c': |
| 4226 | printf("break after N instructions (hex): "); |
| 4227 | scanf("%08x", &breakpoint_value); |
| 4228 | breakpoint_value -= 1; |
| 4229 | debug_off(COUNTDOWN_BREAKPOINT); |
| 4230 | break; |
| 4231 | |
| 4232 | case 'f': |
| 4233 | printf("break after N instructions, skip in IRQ (hex): "); |
| 4234 | scanf("%08x", &breakpoint_value); |
| 4235 | breakpoint_value -= 1; |
| 4236 | debug_off(COUNTDOWN_BREAKPOINT_C); |
| 4237 | break; |
| 4238 | |
| 4239 | case 'g': |
| 4240 | printf("break after N instructions (since start): "); |
| 4241 | scanf("%d", &breakpoint_value); |
| 4242 | debug_off(COUNTDOWN_BREAKPOINT_B); |
| 4243 | break; |
| 4244 | |
| 4245 | case 'v': |
| 4246 | printf("break at VCOUNT: "); |
| 4247 | scanf("%d", &breakpoint_value); |
| 4248 | debug_off(VCOUNT_BREAKPOINT); |
| 4249 | break; |
| 4250 | #endif |
| 4251 | |
| 4252 | case 's': |
| 4253 | current_debug_state = STEP_RUN; |
| 4254 | break; |
| 4255 | |
| 4256 | case 'r': |
| 4257 | debug_off(RUN); |
| 4258 | break; |
| 4259 | |
| 4260 | case 'b': |
| 4261 | debug_off(PC_BREAKPOINT); |
| 4262 | break; |
| 4263 | |
| 4264 | case 't': |
| 4265 | global_cycles_per_instruction = 0; |
| 4266 | debug_off(RUN); |
| 4267 | break; |
| 4268 | |
| 4269 | case 'a': |
| 4270 | { |
| 4271 | char current_savestate_filename[512]; |
| 4272 | u16 *current_screen = copy_screen(); |
| 4273 | get_savestate_filename_noshot(savestate_slot, |
| 4274 | current_savestate_filename); |
| 4275 | save_state(current_savestate_filename, current_screen); |
| 4276 | free(current_screen); |
| 4277 | break; |
| 4278 | } |
| 4279 | |
| 4280 | case 'q': |
| 4281 | quit(); |
| 4282 | } |
| 4283 | |
| 4284 | SDL_PauseAudio(0); |
| 4285 | SDL_UnlockMutex(sound_mutex); |
| 4286 | } |
| 4287 | |
| 4288 | last_instruction = reg[REG_PC]; |
| 4289 | |
| 4290 | if(thumb) |
| 4291 | reg[REG_PC] = pc + 2; |
| 4292 | else |
| 4293 | reg[REG_PC] = pc + 4; |
| 4294 | } |
| 4295 | |
| 4296 | void set_cpu_mode(cpu_mode_type new_mode) |
| 4297 | { |
| 4298 | u32 i; |
| 4299 | cpu_mode_type cpu_mode = reg[CPU_MODE]; |
| 4300 | |
| 4301 | if(cpu_mode != new_mode) |
| 4302 | { |
| 4303 | if(new_mode == MODE_FIQ) |
| 4304 | { |
| 4305 | for(i = 8; i < 15; i++) |
| 4306 | { |
| 4307 | reg_mode[cpu_mode][i - 8] = reg[i]; |
| 4308 | } |
| 4309 | } |
| 4310 | else |
| 4311 | { |
| 4312 | reg_mode[cpu_mode][5] = reg[REG_SP]; |
| 4313 | reg_mode[cpu_mode][6] = reg[REG_LR]; |
| 4314 | } |
| 4315 | |
| 4316 | if(cpu_mode == MODE_FIQ) |
| 4317 | { |
| 4318 | for(i = 8; i < 15; i++) |
| 4319 | { |
| 4320 | reg[i] = reg_mode[new_mode][i - 8]; |
| 4321 | } |
| 4322 | } |
| 4323 | else |
| 4324 | { |
| 4325 | reg[REG_SP] = reg_mode[new_mode][5]; |
| 4326 | reg[REG_LR] = reg_mode[new_mode][6]; |
| 4327 | } |
| 4328 | |
| 4329 | reg[CPU_MODE] = new_mode; |
| 4330 | } |
| 4331 | } |
| 4332 | |
| 4333 | void raise_interrupt(irq_type irq_raised) |
| 4334 | { |
| 4335 | // The specific IRQ must be enabled in IE, master IRQ enable must be on, |
| 4336 | // and it must be on in the flags. |
| 4337 | io_registers[REG_IF] |= irq_raised; |
| 4338 | |
| 4339 | if((io_registers[REG_IE] & irq_raised) && io_registers[REG_IME] && |
| 4340 | ((reg[REG_CPSR] & 0x80) == 0)) |
| 4341 | { |
| 4342 | bios_read_protect = 0xe55ec002; |
| 4343 | |
| 4344 | // Interrupt handler in BIOS |
| 4345 | reg_mode[MODE_IRQ][6] = reg[REG_PC] + 4; |
| 4346 | spsr[MODE_IRQ] = reg[REG_CPSR]; |
| 4347 | reg[REG_CPSR] = 0xD2; |
| 4348 | reg[REG_PC] = 0x00000018; |
| 4349 | |
| 4350 | bios_region_read_allow(); |
| 4351 | |
| 4352 | set_cpu_mode(MODE_IRQ); |
| 4353 | reg[CPU_HALT_STATE] = CPU_ACTIVE; |
| 4354 | reg[CHANGED_PC_STATUS] = 1; |
| 4355 | } |
| 4356 | } |
| 4357 | |
| 4358 | void execute_arm(u32 cycles) |
| 4359 | { |
| 4360 | u32 pc = reg[REG_PC]; |
| 4361 | u32 opcode; |
| 4362 | u32 condition; |
| 4363 | u32 n_flag, z_flag, c_flag, v_flag; |
| 4364 | u32 pc_region = (pc >> 15); |
| 4365 | u8 *pc_address_block = memory_map_read[pc_region]; |
| 4366 | u32 new_pc_region; |
| 4367 | s32 cycles_remaining; |
| 4368 | u32 cycles_per_instruction = global_cycles_per_instruction; |
| 4369 | cpu_alert_type cpu_alert; |
| 4370 | |
| 4371 | u32 old_pc; |
| 4372 | |
| 4373 | if(pc_address_block == NULL) |
| 4374 | pc_address_block = load_gamepak_page(pc_region & 0x3FF); |
| 4375 | |
| 4376 | while(1) |
| 4377 | { |
| 4378 | cycles_remaining = cycles; |
| 4379 | pc = reg[REG_PC]; |
| 4380 | extract_flags(); |
| 4381 | |
| 4382 | if(reg[REG_CPSR] & 0x20) |
| 4383 | goto thumb_loop; |
| 4384 | |
| 4385 | do |
| 4386 | { |
| 4387 | arm_loop: |
| 4388 | |
| 4389 | collapse_flags(); |
| 4390 | step_debug(pc, cycles_remaining); |
| 4391 | cycles_per_instruction = global_cycles_per_instruction; |
| 4392 | |
| 4393 | old_pc = pc; |
| 4394 | execute_arm_instruction(); |
| 4395 | cycles_remaining -= cycles_per_instruction; |
| 4396 | } while(cycles_remaining > 0); |
| 4397 | |
| 4398 | collapse_flags(); |
| 4399 | cycles = update_gba(); |
| 4400 | continue; |
| 4401 | |
| 4402 | do |
| 4403 | { |
| 4404 | thumb_loop: |
| 4405 | |
| 4406 | collapse_flags(); |
| 4407 | step_debug(pc, cycles_remaining); |
| 4408 | |
| 4409 | old_pc = pc; |
| 4410 | execute_thumb_instruction(); |
| 4411 | cycles_remaining -= cycles_per_instruction; |
| 4412 | } while(cycles_remaining > 0); |
| 4413 | |
| 4414 | collapse_flags(); |
| 4415 | cycles = update_gba(); |
| 4416 | continue; |
| 4417 | |
| 4418 | alert: |
| 4419 | |
| 4420 | if(cpu_alert == CPU_ALERT_IRQ) |
| 4421 | { |
| 4422 | cycles = cycles_remaining; |
| 4423 | } |
| 4424 | else |
| 4425 | { |
| 4426 | collapse_flags(); |
| 4427 | |
| 4428 | while(reg[CPU_HALT_STATE] != CPU_ACTIVE) |
| 4429 | { |
| 4430 | cycles = update_gba(); |
| 4431 | } |
| 4432 | } |
| 4433 | } |
| 4434 | } |
| 4435 | |
| 4436 | void init_cpu() |
| 4437 | { |
| 4438 | u32 i; |
| 4439 | |
| 4440 | for(i = 0; i < 16; i++) |
| 4441 | { |
| 4442 | reg[i] = 0; |
| 4443 | } |
| 4444 | |
| 4445 | reg[REG_SP] = 0x03007F00; |
| 4446 | reg[REG_PC] = 0x08000000; |
| 4447 | reg[REG_CPSR] = 0x0000001F; |
| 4448 | reg[CPU_HALT_STATE] = CPU_ACTIVE; |
| 4449 | reg[CPU_MODE] = MODE_USER; |
| 4450 | reg[CHANGED_PC_STATUS] = 0; |
| 4451 | |
| 4452 | reg_mode[MODE_USER][5] = 0x03007F00; |
| 4453 | reg_mode[MODE_IRQ][5] = 0x03007FA0; |
| 4454 | reg_mode[MODE_FIQ][5] = 0x03007FA0; |
| 4455 | reg_mode[MODE_SUPERVISOR][5] = 0x03007FE0; |
| 4456 | } |
| 4457 | |
| 4458 | void move_reg(u32 *new_reg) |
| 4459 | { |
| 4460 | u32 i; |
| 4461 | |
| 4462 | for(i = 0; i < 32; i++) |
| 4463 | { |
| 4464 | new_reg[i] = reg[i]; |
| 4465 | } |
| 4466 | |
| 4467 | reg = new_reg; |
| 4468 | } |
| 4469 | |
| 4470 | |
| 4471 | #define cpu_savestate_builder(type) \ |
| 4472 | void cpu_##type##_savestate(file_tag_type savestate_file) \ |
| 4473 | { \ |
| 4474 | file_##type(savestate_file, reg, 0x100); \ |
| 4475 | file_##type##_array(savestate_file, spsr); \ |
| 4476 | file_##type##_array(savestate_file, reg_mode); \ |
| 4477 | } \ |
| 4478 | |
| 4479 | cpu_savestate_builder(read); |
| 4480 | cpu_savestate_builder(write_mem); |
| 4481 | |