| 1 | /* The common simulator framework for GDB, the GNU Debugger. |
| 2 | |
| 3 | Copyright 2002, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc. |
| 4 | |
| 5 | Contributed by Andrew Cagney and Red Hat. |
| 6 | |
| 7 | This file is part of GDB. |
| 8 | |
| 9 | This program is free software; you can redistribute it and/or modify |
| 10 | it under the terms of the GNU General Public License as published by |
| 11 | the Free Software Foundation; either version 3 of the License, or |
| 12 | (at your option) any later version. |
| 13 | |
| 14 | This program is distributed in the hope that it will be useful, |
| 15 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | GNU General Public License for more details. |
| 18 | |
| 19 | You should have received a copy of the GNU General Public License |
| 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 21 | |
| 22 | |
| 23 | #ifndef N |
| 24 | #error "N must be #defined" |
| 25 | #endif |
| 26 | #ifndef M |
| 27 | #define M N |
| 28 | #endif |
| 29 | |
| 30 | /* N: The number of bytes of data to transfer. |
| 31 | M: The number of bytes in the type used to transfer the data */ |
| 32 | |
| 33 | #if (N > M) |
| 34 | #error "N (nr bytes of data) must be <= M (nr of bytes in data type)" |
| 35 | #endif |
| 36 | |
| 37 | |
| 38 | #include "symcat.h" |
| 39 | |
| 40 | /* NOTE: see end of file for #undef of these macros */ |
| 41 | |
| 42 | #define unsigned_M XCONCAT2(unsigned_,M) |
| 43 | |
| 44 | #define T2H_M XCONCAT2(T2H_,M) |
| 45 | #define H2T_M XCONCAT2(H2T_,M) |
| 46 | #define SWAP_M XCONCAT2(SWAP_,M) |
| 47 | |
| 48 | #define sim_core_read_aligned_N XCONCAT2(sim_core_read_aligned_,N) |
| 49 | #define sim_core_read_unaligned_N XCONCAT2(sim_core_read_unaligned_,N) |
| 50 | #define sim_core_read_misaligned_N XCONCAT2(sim_core_read_misaligned_,N) |
| 51 | #define sim_core_write_aligned_N XCONCAT2(sim_core_write_aligned_,N) |
| 52 | #define sim_core_write_unaligned_N XCONCAT2(sim_core_write_unaligned_,N) |
| 53 | #define sim_core_write_misaligned_N XCONCAT2(sim_core_write_misaligned_,N) |
| 54 | #define sim_core_trace_M XCONCAT2(sim_core_trace_,M) |
| 55 | #define sim_core_dummy_M XCONCAT2(sim_core_dummy_,M) |
| 56 | |
| 57 | |
| 58 | #if (M == N && N > 1) |
| 59 | /* dummy variable used as a return value when nothing else is |
| 60 | available and the compiler is complaining */ |
| 61 | static unsigned_M sim_core_dummy_M; |
| 62 | #endif |
| 63 | |
| 64 | |
| 65 | /* TAGS: sim_core_trace_1 sim_core_trace_2 */ |
| 66 | /* TAGS: sim_core_trace_4 sim_core_trace_8 */ |
| 67 | /* TAGS: sim_core_trace_16 */ |
| 68 | |
| 69 | #if (M == N) |
| 70 | STATIC_SIM_CORE(void) |
| 71 | sim_core_trace_M (sim_cpu *cpu, |
| 72 | sim_cia cia, |
| 73 | int line_nr, |
| 74 | transfer_type type, |
| 75 | unsigned map, |
| 76 | address_word addr, |
| 77 | unsigned_M val, |
| 78 | int nr_bytes) |
| 79 | { |
| 80 | const char *transfer = (type == read_transfer ? "read" : "write"); |
| 81 | const char *direction = (type == read_transfer ? "->" : "<-"); |
| 82 | |
| 83 | if (TRACE_DEBUG_P (cpu)) |
| 84 | trace_printf (CPU_STATE (cpu), cpu, "sim-n-core.h:%d: ", line_nr); |
| 85 | |
| 86 | #if (M == 16) |
| 87 | trace_printf (CPU_STATE (cpu), cpu, |
| 88 | "%s-%d %s:0x%08lx %s 0x%08lx%08lx%08lx%08lx\n", |
| 89 | transfer, nr_bytes, |
| 90 | map_to_str (map), |
| 91 | (unsigned long) addr, |
| 92 | direction, |
| 93 | (unsigned long) V4_16 (val, 0), |
| 94 | (unsigned long) V4_16 (val, 1), |
| 95 | (unsigned long) V4_16 (val, 2), |
| 96 | (unsigned long) V4_16 (val, 3)); |
| 97 | #endif |
| 98 | #if (M == 8) |
| 99 | trace_printf (CPU_STATE (cpu), cpu, |
| 100 | "%s-%d %s:0x%08lx %s 0x%08lx%08lx\n", |
| 101 | transfer, nr_bytes, |
| 102 | map_to_str (map), |
| 103 | (unsigned long) addr, |
| 104 | direction, |
| 105 | (unsigned long) V4_8 (val, 0), |
| 106 | (unsigned long) V4_8 (val, 1)); |
| 107 | #endif |
| 108 | #if (M == 4) |
| 109 | trace_printf (CPU_STATE (cpu), cpu, |
| 110 | "%s-%d %s:0x%08lx %s 0x%08lx\n", |
| 111 | transfer, |
| 112 | nr_bytes, |
| 113 | map_to_str (map), |
| 114 | (unsigned long) addr, |
| 115 | direction, |
| 116 | (unsigned long) val); |
| 117 | #endif |
| 118 | #if (M == 2) |
| 119 | trace_printf (CPU_STATE (cpu), cpu, |
| 120 | "%s-%d %s:0x%08lx %s 0x%04lx\n", |
| 121 | transfer, |
| 122 | nr_bytes, |
| 123 | map_to_str (map), |
| 124 | (unsigned long) addr, |
| 125 | direction, |
| 126 | (unsigned long) val); |
| 127 | #endif |
| 128 | #if (M == 1) |
| 129 | trace_printf (CPU_STATE (cpu), cpu, |
| 130 | "%s-%d %s:0x%08lx %s 0x%02lx\n", |
| 131 | transfer, |
| 132 | nr_bytes, |
| 133 | map_to_str (map), |
| 134 | (unsigned long) addr, |
| 135 | direction, |
| 136 | (unsigned long) val); |
| 137 | #endif |
| 138 | } |
| 139 | #endif |
| 140 | |
| 141 | |
| 142 | /* TAGS: sim_core_read_aligned_1 sim_core_read_aligned_2 */ |
| 143 | /* TAGS: sim_core_read_aligned_4 sim_core_read_aligned_8 */ |
| 144 | /* TAGS: sim_core_read_aligned_16 */ |
| 145 | |
| 146 | #if (M == N) |
| 147 | INLINE_SIM_CORE(unsigned_M) |
| 148 | sim_core_read_aligned_N(sim_cpu *cpu, |
| 149 | sim_cia cia, |
| 150 | unsigned map, |
| 151 | address_word xaddr) |
| 152 | { |
| 153 | sim_cpu_core *cpu_core = CPU_CORE (cpu); |
| 154 | sim_core_common *core = &cpu_core->common; |
| 155 | unsigned_M val; |
| 156 | sim_core_mapping *mapping; |
| 157 | address_word addr; |
| 158 | #if WITH_XOR_ENDIAN != 0 |
| 159 | if (WITH_XOR_ENDIAN) |
| 160 | addr = xaddr ^ cpu_core->xor[(N - 1) % WITH_XOR_ENDIAN]; |
| 161 | else |
| 162 | #endif |
| 163 | addr = xaddr; |
| 164 | mapping = sim_core_find_mapping (core, map, addr, N, read_transfer, 1 /*abort*/, cpu, cia); |
| 165 | do |
| 166 | { |
| 167 | #if (WITH_DEVICES) |
| 168 | if (WITH_CALLBACK_MEMORY && mapping->device != NULL) |
| 169 | { |
| 170 | unsigned_M data; |
| 171 | if (device_io_read_buffer (mapping->device, &data, mapping->space, addr, N, CPU_STATE (cpu), cpu, cia) != N) |
| 172 | device_error (mapping->device, "internal error - %s - io_read_buffer should not fail", |
| 173 | XSTRING (sim_core_read_aligned_N)); |
| 174 | val = T2H_M (data); |
| 175 | break; |
| 176 | } |
| 177 | #endif |
| 178 | #if (WITH_HW) |
| 179 | if (WITH_CALLBACK_MEMORY && mapping->device != NULL) |
| 180 | { |
| 181 | unsigned_M data; |
| 182 | sim_cpu_hw_io_read_buffer (cpu, cia, mapping->device, &data, mapping->space, addr, N); |
| 183 | val = T2H_M (data); |
| 184 | break; |
| 185 | } |
| 186 | #endif |
| 187 | val = T2H_M (*(unsigned_M*) sim_core_translate (mapping, addr)); |
| 188 | } |
| 189 | while (0); |
| 190 | PROFILE_COUNT_CORE (cpu, addr, N, map); |
| 191 | if (TRACE_P (cpu, TRACE_CORE_IDX)) |
| 192 | sim_core_trace_M (cpu, cia, __LINE__, read_transfer, map, addr, val, N); |
| 193 | return val; |
| 194 | } |
| 195 | #endif |
| 196 | |
| 197 | /* TAGS: sim_core_read_unaligned_1 sim_core_read_unaligned_2 */ |
| 198 | /* TAGS: sim_core_read_unaligned_4 sim_core_read_unaligned_8 */ |
| 199 | /* TAGS: sim_core_read_unaligned_16 */ |
| 200 | |
| 201 | #if (M == N && N > 1) |
| 202 | INLINE_SIM_CORE(unsigned_M) |
| 203 | sim_core_read_unaligned_N(sim_cpu *cpu, |
| 204 | sim_cia cia, |
| 205 | unsigned map, |
| 206 | address_word addr) |
| 207 | { |
| 208 | int alignment = N - 1; |
| 209 | /* if hardwired to forced alignment just do it */ |
| 210 | if (WITH_ALIGNMENT == FORCED_ALIGNMENT) |
| 211 | return sim_core_read_aligned_N (cpu, cia, map, addr & ~alignment); |
| 212 | else if ((addr & alignment) == 0) |
| 213 | return sim_core_read_aligned_N (cpu, cia, map, addr); |
| 214 | else |
| 215 | switch (CURRENT_ALIGNMENT) |
| 216 | { |
| 217 | case STRICT_ALIGNMENT: |
| 218 | SIM_CORE_SIGNAL (CPU_STATE (cpu), cpu, cia, map, N, addr, |
| 219 | read_transfer, sim_core_unaligned_signal); |
| 220 | case NONSTRICT_ALIGNMENT: |
| 221 | { |
| 222 | unsigned_M val; |
| 223 | if (sim_core_xor_read_buffer (CPU_STATE (cpu), cpu, map, &val, addr, N) != N) |
| 224 | SIM_CORE_SIGNAL (CPU_STATE (cpu), cpu, cia, map, N, addr, |
| 225 | read_transfer, sim_core_unaligned_signal); |
| 226 | val = T2H_M(val); |
| 227 | PROFILE_COUNT_CORE (cpu, addr, N, map); |
| 228 | if (TRACE_P (cpu, TRACE_CORE_IDX)) |
| 229 | sim_core_trace_M (cpu, cia, __LINE__, read_transfer, map, addr, val, N); |
| 230 | return val; |
| 231 | } |
| 232 | case FORCED_ALIGNMENT: |
| 233 | return sim_core_read_aligned_N (cpu, cia, map, addr & ~alignment); |
| 234 | case MIXED_ALIGNMENT: |
| 235 | sim_engine_abort (CPU_STATE (cpu), cpu, cia, |
| 236 | "internal error - %s - mixed alignment", |
| 237 | XSTRING (sim_core_read_unaligned_N)); |
| 238 | default: |
| 239 | sim_engine_abort (CPU_STATE (cpu), cpu, cia, |
| 240 | "internal error - %s - bad switch", |
| 241 | XSTRING (sim_core_read_unaligned_N)); |
| 242 | /* to keep some compilers happy, we return a dummy */ |
| 243 | return sim_core_dummy_M; |
| 244 | } |
| 245 | } |
| 246 | #endif |
| 247 | |
| 248 | /* TAGS: sim_core_read_misaligned_3 sim_core_read_misaligned_5 */ |
| 249 | /* TAGS: sim_core_read_misaligned_6 sim_core_read_misaligned_7 */ |
| 250 | |
| 251 | #if (M != N) |
| 252 | INLINE_SIM_CORE(unsigned_M) |
| 253 | sim_core_read_misaligned_N(sim_cpu *cpu, |
| 254 | sim_cia cia, |
| 255 | unsigned map, |
| 256 | address_word addr) |
| 257 | { |
| 258 | unsigned_M val = 0; |
| 259 | if (sim_core_xor_read_buffer (CPU_STATE (cpu), cpu, map, &val, addr, N) != N) |
| 260 | SIM_CORE_SIGNAL (CPU_STATE (cpu), cpu, cia, map, N, addr, |
| 261 | read_transfer, sim_core_unaligned_signal); |
| 262 | if (CURRENT_HOST_BYTE_ORDER != CURRENT_TARGET_BYTE_ORDER) |
| 263 | val = SWAP_M (val); |
| 264 | if (CURRENT_TARGET_BYTE_ORDER == BIG_ENDIAN) |
| 265 | val >>= (M - N) * 8; |
| 266 | PROFILE_COUNT_CORE (cpu, addr, N, map); |
| 267 | if (TRACE_P (cpu, TRACE_CORE_IDX)) |
| 268 | sim_core_trace_M (cpu, cia, __LINE__, read_transfer, map, addr, val, N); |
| 269 | return val; |
| 270 | } |
| 271 | #endif |
| 272 | |
| 273 | /* TAGS: sim_core_write_aligned_1 sim_core_write_aligned_2 */ |
| 274 | /* TAGS: sim_core_write_aligned_4 sim_core_write_aligned_8 */ |
| 275 | /* TAGS: sim_core_write_aligned_16 */ |
| 276 | |
| 277 | #if (M == N) |
| 278 | INLINE_SIM_CORE(void) |
| 279 | sim_core_write_aligned_N(sim_cpu *cpu, |
| 280 | sim_cia cia, |
| 281 | unsigned map, |
| 282 | address_word xaddr, |
| 283 | unsigned_M val) |
| 284 | { |
| 285 | sim_cpu_core *cpu_core = CPU_CORE (cpu); |
| 286 | sim_core_common *core = &cpu_core->common; |
| 287 | sim_core_mapping *mapping; |
| 288 | address_word addr; |
| 289 | #if WITH_XOR_ENDIAN != 0 |
| 290 | if (WITH_XOR_ENDIAN) |
| 291 | addr = xaddr ^ cpu_core->xor[(N - 1) % WITH_XOR_ENDIAN]; |
| 292 | else |
| 293 | #endif |
| 294 | addr = xaddr; |
| 295 | mapping = sim_core_find_mapping (core, map, addr, N, write_transfer, 1 /*abort*/, cpu, cia); |
| 296 | do |
| 297 | { |
| 298 | #if (WITH_DEVICES) |
| 299 | if (WITH_CALLBACK_MEMORY && mapping->device != NULL) |
| 300 | { |
| 301 | unsigned_M data = H2T_M (val); |
| 302 | if (device_io_write_buffer (mapping->device, &data, mapping->space, addr, N, CPU_STATE (cpu), cpu, cia) != N) |
| 303 | device_error (mapping->device, "internal error - %s - io_write_buffer should not fail", |
| 304 | XSTRING (sim_core_write_aligned_N)); |
| 305 | break; |
| 306 | } |
| 307 | #endif |
| 308 | #if (WITH_HW) |
| 309 | if (WITH_CALLBACK_MEMORY && mapping->device != NULL) |
| 310 | { |
| 311 | unsigned_M data = H2T_M (val); |
| 312 | sim_cpu_hw_io_write_buffer (cpu, cia, mapping->device, &data, mapping->space, addr, N); |
| 313 | break; |
| 314 | } |
| 315 | #endif |
| 316 | *(unsigned_M*) sim_core_translate (mapping, addr) = H2T_M (val); |
| 317 | } |
| 318 | while (0); |
| 319 | PROFILE_COUNT_CORE (cpu, addr, N, map); |
| 320 | if (TRACE_P (cpu, TRACE_CORE_IDX)) |
| 321 | sim_core_trace_M (cpu, cia, __LINE__, write_transfer, map, addr, val, N); |
| 322 | } |
| 323 | #endif |
| 324 | |
| 325 | /* TAGS: sim_core_write_unaligned_1 sim_core_write_unaligned_2 */ |
| 326 | /* TAGS: sim_core_write_unaligned_4 sim_core_write_unaligned_8 */ |
| 327 | /* TAGS: sim_core_write_unaligned_16 */ |
| 328 | |
| 329 | #if (M == N && N > 1) |
| 330 | INLINE_SIM_CORE(void) |
| 331 | sim_core_write_unaligned_N(sim_cpu *cpu, |
| 332 | sim_cia cia, |
| 333 | unsigned map, |
| 334 | address_word addr, |
| 335 | unsigned_M val) |
| 336 | { |
| 337 | int alignment = N - 1; |
| 338 | /* if hardwired to forced alignment just do it */ |
| 339 | if (WITH_ALIGNMENT == FORCED_ALIGNMENT) |
| 340 | sim_core_write_aligned_N (cpu, cia, map, addr & ~alignment, val); |
| 341 | else if ((addr & alignment) == 0) |
| 342 | sim_core_write_aligned_N (cpu, cia, map, addr, val); |
| 343 | else |
| 344 | switch (CURRENT_ALIGNMENT) |
| 345 | { |
| 346 | case STRICT_ALIGNMENT: |
| 347 | SIM_CORE_SIGNAL (CPU_STATE (cpu), cpu, cia, map, N, addr, |
| 348 | write_transfer, sim_core_unaligned_signal); |
| 349 | break; |
| 350 | case NONSTRICT_ALIGNMENT: |
| 351 | { |
| 352 | unsigned_M data = H2T_M (val); |
| 353 | if (sim_core_xor_write_buffer (CPU_STATE (cpu), cpu, map, &data, addr, N) != N) |
| 354 | SIM_CORE_SIGNAL (CPU_STATE (cpu), cpu, cia, map, N, addr, |
| 355 | write_transfer, sim_core_unaligned_signal); |
| 356 | PROFILE_COUNT_CORE (cpu, addr, N, map); |
| 357 | if (TRACE_P (cpu, TRACE_CORE_IDX)) |
| 358 | sim_core_trace_M (cpu, cia, __LINE__, write_transfer, map, addr, val, N); |
| 359 | break; |
| 360 | } |
| 361 | case FORCED_ALIGNMENT: |
| 362 | sim_core_write_aligned_N (cpu, cia, map, addr & ~alignment, val); |
| 363 | break; |
| 364 | case MIXED_ALIGNMENT: |
| 365 | sim_engine_abort (CPU_STATE (cpu), cpu, cia, |
| 366 | "internal error - %s - mixed alignment", |
| 367 | XSTRING (sim_core_write_unaligned_N)); |
| 368 | break; |
| 369 | default: |
| 370 | sim_engine_abort (CPU_STATE (cpu), cpu, cia, |
| 371 | "internal error - %s - bad switch", |
| 372 | XSTRING (sim_core_write_unaligned_N)); |
| 373 | break; |
| 374 | } |
| 375 | } |
| 376 | #endif |
| 377 | |
| 378 | /* TAGS: sim_core_write_misaligned_3 sim_core_write_misaligned_5 */ |
| 379 | /* TAGS: sim_core_write_misaligned_6 sim_core_write_misaligned_7 */ |
| 380 | |
| 381 | #if (M != N) |
| 382 | INLINE_SIM_CORE(void) |
| 383 | sim_core_write_misaligned_N(sim_cpu *cpu, |
| 384 | sim_cia cia, |
| 385 | unsigned map, |
| 386 | address_word addr, |
| 387 | unsigned_M val) |
| 388 | { |
| 389 | unsigned_M data = val; |
| 390 | if (CURRENT_TARGET_BYTE_ORDER == BIG_ENDIAN) |
| 391 | data <<= (M - N) * 8; |
| 392 | if (CURRENT_HOST_BYTE_ORDER != CURRENT_TARGET_BYTE_ORDER) |
| 393 | data = SWAP_M (data); |
| 394 | if (sim_core_xor_write_buffer (CPU_STATE (cpu), cpu, map, &data, addr, N) != N) |
| 395 | SIM_CORE_SIGNAL (CPU_STATE (cpu), cpu, cia, map, N, addr, |
| 396 | write_transfer, sim_core_unaligned_signal); |
| 397 | PROFILE_COUNT_CORE (cpu, addr, N, map); |
| 398 | if (TRACE_P (cpu, TRACE_CORE_IDX)) |
| 399 | sim_core_trace_M (cpu, cia, __LINE__, write_transfer, map, addr, val, N); |
| 400 | } |
| 401 | #endif |
| 402 | |
| 403 | |
| 404 | /* NOTE: see start of file for #define of these macros */ |
| 405 | #undef unsigned_M |
| 406 | #undef T2H_M |
| 407 | #undef H2T_M |
| 408 | #undef SWAP_M |
| 409 | #undef sim_core_read_aligned_N |
| 410 | #undef sim_core_read_unaligned_N |
| 411 | #undef sim_core_read_misaligned_N |
| 412 | #undef sim_core_write_aligned_N |
| 413 | #undef sim_core_write_unaligned_N |
| 414 | #undef sim_core_write_misaligned_N |
| 415 | #undef sim_core_trace_M |
| 416 | #undef sim_core_dummy_M |
| 417 | #undef M |
| 418 | #undef N |