| 1 | /* Target-dependent code for the S+core architecture, for GDB, |
| 2 | the GNU Debugger. |
| 3 | |
| 4 | Copyright (C) 2006-2014 Free Software Foundation, Inc. |
| 5 | |
| 6 | Contributed by Qinwei (qinwei@sunnorth.com.cn) |
| 7 | Contributed by Ching-Peng Lin (cplin@sunplus.com) |
| 8 | |
| 9 | This file is part of GDB. |
| 10 | |
| 11 | This program is free software; you can redistribute it and/or modify |
| 12 | it under the terms of the GNU General Public License as published by |
| 13 | the Free Software Foundation; either version 3 of the License, or |
| 14 | (at your option) any later version. |
| 15 | |
| 16 | This program is distributed in the hope that it will be useful, |
| 17 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 19 | GNU General Public License for more details. |
| 20 | |
| 21 | You should have received a copy of the GNU General Public License |
| 22 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 23 | |
| 24 | #include "defs.h" |
| 25 | #include "gdb_assert.h" |
| 26 | #include "inferior.h" |
| 27 | #include "symtab.h" |
| 28 | #include "objfiles.h" |
| 29 | #include "gdbcore.h" |
| 30 | #include "target.h" |
| 31 | #include "arch-utils.h" |
| 32 | #include "regcache.h" |
| 33 | #include "regset.h" |
| 34 | #include "dis-asm.h" |
| 35 | #include "frame-unwind.h" |
| 36 | #include "frame-base.h" |
| 37 | #include "trad-frame.h" |
| 38 | #include "dwarf2-frame.h" |
| 39 | #include "score-tdep.h" |
| 40 | |
| 41 | #define G_FLD(_i,_ms,_ls) \ |
| 42 | ((unsigned)((_i) << (31 - (_ms))) >> (31 - (_ms) + (_ls))) |
| 43 | |
| 44 | typedef struct{ |
| 45 | unsigned long long v; |
| 46 | unsigned long long raw; |
| 47 | unsigned int len; |
| 48 | }inst_t; |
| 49 | |
| 50 | struct score_frame_cache |
| 51 | { |
| 52 | CORE_ADDR base; |
| 53 | CORE_ADDR fp; |
| 54 | struct trad_frame_saved_reg *saved_regs; |
| 55 | }; |
| 56 | |
| 57 | static int target_mach = bfd_mach_score7; |
| 58 | |
| 59 | static struct type * |
| 60 | score_register_type (struct gdbarch *gdbarch, int regnum) |
| 61 | { |
| 62 | gdb_assert (regnum >= 0 |
| 63 | && regnum < ((target_mach == bfd_mach_score7) |
| 64 | ? SCORE7_NUM_REGS : SCORE3_NUM_REGS)); |
| 65 | return builtin_type (gdbarch)->builtin_uint32; |
| 66 | } |
| 67 | |
| 68 | static CORE_ADDR |
| 69 | score_unwind_sp (struct gdbarch *gdbarch, struct frame_info *next_frame) |
| 70 | { |
| 71 | return frame_unwind_register_unsigned (next_frame, SCORE_SP_REGNUM); |
| 72 | } |
| 73 | |
| 74 | static CORE_ADDR |
| 75 | score_unwind_pc (struct gdbarch *gdbarch, struct frame_info *next_frame) |
| 76 | { |
| 77 | return frame_unwind_register_unsigned (next_frame, SCORE_PC_REGNUM); |
| 78 | } |
| 79 | |
| 80 | static const char * |
| 81 | score7_register_name (struct gdbarch *gdbarch, int regnum) |
| 82 | { |
| 83 | const char *score_register_names[] = { |
| 84 | "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", |
| 85 | "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", |
| 86 | "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", |
| 87 | "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31", |
| 88 | |
| 89 | "PSR", "COND", "ECR", "EXCPVEC", "CCR", |
| 90 | "EPC", "EMA", "TLBLOCK", "TLBPT", "PEADDR", |
| 91 | "TLBRPT", "PEVN", "PECTX", "LIMPFN", "LDMPFN", |
| 92 | "PREV", "DREG", "PC", "DSAVE", "COUNTER", |
| 93 | "LDCR", "STCR", "CEH", "CEL", |
| 94 | }; |
| 95 | |
| 96 | gdb_assert (regnum >= 0 && regnum < SCORE7_NUM_REGS); |
| 97 | return score_register_names[regnum]; |
| 98 | } |
| 99 | |
| 100 | static const char * |
| 101 | score3_register_name (struct gdbarch *gdbarch, int regnum) |
| 102 | { |
| 103 | const char *score_register_names[] = { |
| 104 | "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", |
| 105 | "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", |
| 106 | "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", |
| 107 | "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31", |
| 108 | |
| 109 | "PSR", "COND", "ECR", "EXCPVEC", "CCR", |
| 110 | "EPC", "EMA", "PREV", "DREG", "DSAVE", |
| 111 | "COUNTER", "LDCR", "STCR", "CEH", "CEL", |
| 112 | "", "", "PC", |
| 113 | }; |
| 114 | |
| 115 | gdb_assert (regnum >= 0 && regnum < SCORE3_NUM_REGS); |
| 116 | return score_register_names[regnum]; |
| 117 | } |
| 118 | |
| 119 | #if WITH_SIM |
| 120 | static int |
| 121 | score_register_sim_regno (struct gdbarch *gdbarch, int regnum) |
| 122 | { |
| 123 | gdb_assert (regnum >= 0 |
| 124 | && regnum < ((target_mach == bfd_mach_score7) |
| 125 | ? SCORE7_NUM_REGS : SCORE3_NUM_REGS)); |
| 126 | return regnum; |
| 127 | } |
| 128 | #endif |
| 129 | |
| 130 | static int |
| 131 | score_print_insn (bfd_vma memaddr, struct disassemble_info *info) |
| 132 | { |
| 133 | if (info->endian == BFD_ENDIAN_BIG) |
| 134 | return print_insn_big_score (memaddr, info); |
| 135 | else |
| 136 | return print_insn_little_score (memaddr, info); |
| 137 | } |
| 138 | |
| 139 | static inst_t * |
| 140 | score7_fetch_inst (struct gdbarch *gdbarch, CORE_ADDR addr, gdb_byte *memblock) |
| 141 | { |
| 142 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
| 143 | static inst_t inst = { 0, 0, 0 }; |
| 144 | gdb_byte buf[SCORE_INSTLEN] = { 0 }; |
| 145 | int big; |
| 146 | int ret; |
| 147 | |
| 148 | if (target_has_execution && memblock != NULL) |
| 149 | { |
| 150 | /* Fetch instruction from local MEMBLOCK. */ |
| 151 | memcpy (buf, memblock, SCORE_INSTLEN); |
| 152 | } |
| 153 | else |
| 154 | { |
| 155 | /* Fetch instruction from target. */ |
| 156 | ret = target_read_memory (addr & ~0x3, buf, SCORE_INSTLEN); |
| 157 | if (ret) |
| 158 | { |
| 159 | error (_("Error: target_read_memory in file:%s, line:%d!"), |
| 160 | __FILE__, __LINE__); |
| 161 | return 0; |
| 162 | } |
| 163 | } |
| 164 | |
| 165 | inst.raw = extract_unsigned_integer (buf, SCORE_INSTLEN, byte_order); |
| 166 | inst.len = (inst.raw & 0x80008000) ? 4 : 2; |
| 167 | inst.v = ((inst.raw >> 16 & 0x7FFF) << 15) | (inst.raw & 0x7FFF); |
| 168 | big = (byte_order == BFD_ENDIAN_BIG); |
| 169 | if (inst.len == 2) |
| 170 | { |
| 171 | if (big ^ ((addr & 0x2) == 2)) |
| 172 | inst.v = G_FLD (inst.v, 29, 15); |
| 173 | else |
| 174 | inst.v = G_FLD (inst.v, 14, 0); |
| 175 | } |
| 176 | return &inst; |
| 177 | } |
| 178 | |
| 179 | static inst_t * |
| 180 | score3_adjust_pc_and_fetch_inst (CORE_ADDR *pcptr, int *lenptr, |
| 181 | enum bfd_endian byte_order) |
| 182 | { |
| 183 | static inst_t inst = { 0, 0, 0 }; |
| 184 | |
| 185 | struct breakplace |
| 186 | { |
| 187 | int break_offset; |
| 188 | int inst_len; |
| 189 | }; |
| 190 | /* raw table 1 (column 2, 3, 4) |
| 191 | * 0 1 0 * # 2 |
| 192 | * 0 1 1 0 # 3 |
| 193 | 0 1 1 0 * # 6 |
| 194 | table 2 (column 1, 2, 3) |
| 195 | * 0 0 * * # 0, 4 |
| 196 | 0 1 0 * * # 2 |
| 197 | 1 1 0 * * # 6 |
| 198 | */ |
| 199 | |
| 200 | static const struct breakplace bk_table[16] = |
| 201 | { |
| 202 | /* table 1 */ |
| 203 | {0, 0}, |
| 204 | {0, 0}, |
| 205 | {0, 4}, |
| 206 | {0, 6}, |
| 207 | {0, 0}, |
| 208 | {0, 0}, |
| 209 | {-2, 6}, |
| 210 | {0, 0}, |
| 211 | /* table 2 */ |
| 212 | {0, 2}, |
| 213 | {0, 0}, |
| 214 | {-2, 4}, |
| 215 | {0, 0}, |
| 216 | {0, 2}, |
| 217 | {0, 0}, |
| 218 | {-4, 6}, |
| 219 | {0, 0} |
| 220 | }; |
| 221 | |
| 222 | #define EXTRACT_LEN 2 |
| 223 | CORE_ADDR adjust_pc = *pcptr & ~0x1; |
| 224 | gdb_byte buf[5][EXTRACT_LEN] = |
| 225 | { |
| 226 | {'\0', '\0'}, |
| 227 | {'\0', '\0'}, |
| 228 | {'\0', '\0'}, |
| 229 | {'\0', '\0'}, |
| 230 | {'\0', '\0'} |
| 231 | }; |
| 232 | int ret; |
| 233 | unsigned int raw; |
| 234 | unsigned int cbits = 0; |
| 235 | int bk_index; |
| 236 | int i, count; |
| 237 | |
| 238 | inst.v = 0; |
| 239 | inst.raw = 0; |
| 240 | inst.len = 0; |
| 241 | |
| 242 | adjust_pc -= 4; |
| 243 | for (i = 0; i < 5; i++) |
| 244 | { |
| 245 | ret = target_read_memory (adjust_pc + 2 * i, buf[i], EXTRACT_LEN); |
| 246 | if (ret != 0) |
| 247 | { |
| 248 | buf[i][0] = '\0'; |
| 249 | buf[i][1] = '\0'; |
| 250 | if (i == 2) |
| 251 | error (_("Error: target_read_memory in file:%s, line:%d!"), |
| 252 | __FILE__, __LINE__); |
| 253 | } |
| 254 | |
| 255 | raw = extract_unsigned_integer (buf[i], EXTRACT_LEN, byte_order); |
| 256 | cbits = (cbits << 1) | (raw >> 15); |
| 257 | } |
| 258 | adjust_pc += 4; |
| 259 | |
| 260 | if (cbits & 0x4) |
| 261 | { |
| 262 | /* table 1 */ |
| 263 | cbits = (cbits >> 1) & 0x7; |
| 264 | bk_index = cbits; |
| 265 | } |
| 266 | else |
| 267 | { |
| 268 | /* table 2 */ |
| 269 | cbits = (cbits >> 2) & 0x7; |
| 270 | bk_index = cbits + 8; |
| 271 | } |
| 272 | |
| 273 | gdb_assert (!((bk_table[bk_index].break_offset == 0) |
| 274 | && (bk_table[bk_index].inst_len == 0))); |
| 275 | |
| 276 | inst.len = bk_table[bk_index].inst_len; |
| 277 | |
| 278 | i = (bk_table[bk_index].break_offset + 4) / 2; |
| 279 | count = inst.len / 2; |
| 280 | for (; count > 0; i++, count--) |
| 281 | { |
| 282 | inst.raw = (inst.raw << 16) |
| 283 | | extract_unsigned_integer (buf[i], EXTRACT_LEN, byte_order); |
| 284 | } |
| 285 | |
| 286 | switch (inst.len) |
| 287 | { |
| 288 | case 2: |
| 289 | inst.v = inst.raw & 0x7FFF; |
| 290 | break; |
| 291 | case 4: |
| 292 | inst.v = ((inst.raw >> 16 & 0x7FFF) << 15) | (inst.raw & 0x7FFF); |
| 293 | break; |
| 294 | case 6: |
| 295 | inst.v = ((inst.raw >> 32 & 0x7FFF) << 30) |
| 296 | | ((inst.raw >> 16 & 0x7FFF) << 15) | (inst.raw & 0x7FFF); |
| 297 | break; |
| 298 | } |
| 299 | |
| 300 | if (pcptr) |
| 301 | *pcptr = adjust_pc + bk_table[bk_index].break_offset; |
| 302 | if (lenptr) |
| 303 | *lenptr = bk_table[bk_index].inst_len; |
| 304 | |
| 305 | #undef EXTRACT_LEN |
| 306 | |
| 307 | return &inst; |
| 308 | } |
| 309 | |
| 310 | static const gdb_byte * |
| 311 | score7_breakpoint_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr, |
| 312 | int *lenptr) |
| 313 | { |
| 314 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
| 315 | gdb_byte buf[SCORE_INSTLEN] = { 0 }; |
| 316 | int ret; |
| 317 | unsigned int raw; |
| 318 | |
| 319 | if ((ret = target_read_memory (*pcptr & ~0x3, buf, SCORE_INSTLEN)) != 0) |
| 320 | { |
| 321 | error (_("Error: target_read_memory in file:%s, line:%d!"), |
| 322 | __FILE__, __LINE__); |
| 323 | } |
| 324 | raw = extract_unsigned_integer (buf, SCORE_INSTLEN, byte_order); |
| 325 | |
| 326 | if (byte_order == BFD_ENDIAN_BIG) |
| 327 | { |
| 328 | if (!(raw & 0x80008000)) |
| 329 | { |
| 330 | /* 16bits instruction. */ |
| 331 | static gdb_byte big_breakpoint16[] = { 0x60, 0x02 }; |
| 332 | *pcptr &= ~0x1; |
| 333 | *lenptr = sizeof (big_breakpoint16); |
| 334 | return big_breakpoint16; |
| 335 | } |
| 336 | else |
| 337 | { |
| 338 | /* 32bits instruction. */ |
| 339 | static gdb_byte big_breakpoint32[] = { 0x80, 0x00, 0x80, 0x06 }; |
| 340 | *pcptr &= ~0x3; |
| 341 | *lenptr = sizeof (big_breakpoint32); |
| 342 | return big_breakpoint32; |
| 343 | } |
| 344 | } |
| 345 | else |
| 346 | { |
| 347 | if (!(raw & 0x80008000)) |
| 348 | { |
| 349 | /* 16bits instruction. */ |
| 350 | static gdb_byte little_breakpoint16[] = { 0x02, 0x60 }; |
| 351 | *pcptr &= ~0x1; |
| 352 | *lenptr = sizeof (little_breakpoint16); |
| 353 | return little_breakpoint16; |
| 354 | } |
| 355 | else |
| 356 | { |
| 357 | /* 32bits instruction. */ |
| 358 | static gdb_byte little_breakpoint32[] = { 0x06, 0x80, 0x00, 0x80 }; |
| 359 | *pcptr &= ~0x3; |
| 360 | *lenptr = sizeof (little_breakpoint32); |
| 361 | return little_breakpoint32; |
| 362 | } |
| 363 | } |
| 364 | } |
| 365 | |
| 366 | static const gdb_byte * |
| 367 | score3_breakpoint_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr, |
| 368 | int *lenptr) |
| 369 | { |
| 370 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
| 371 | CORE_ADDR adjust_pc = *pcptr; |
| 372 | int len; |
| 373 | static gdb_byte score_break_insns[6][6] = { |
| 374 | /* The following three instructions are big endian. */ |
| 375 | { 0x00, 0x20 }, |
| 376 | { 0x80, 0x00, 0x00, 0x06 }, |
| 377 | { 0x80, 0x00, 0x80, 0x00, 0x00, 0x00 }, |
| 378 | /* The following three instructions are little endian. */ |
| 379 | { 0x20, 0x00 }, |
| 380 | { 0x00, 0x80, 0x06, 0x00 }, |
| 381 | { 0x00, 0x80, 0x00, 0x80, 0x00, 0x00 }}; |
| 382 | |
| 383 | gdb_byte *p = NULL; |
| 384 | int index = 0; |
| 385 | |
| 386 | score3_adjust_pc_and_fetch_inst (&adjust_pc, &len, byte_order); |
| 387 | |
| 388 | index = ((byte_order == BFD_ENDIAN_BIG) ? 0 : 3) + (len / 2 - 1); |
| 389 | p = score_break_insns[index]; |
| 390 | |
| 391 | *pcptr = adjust_pc; |
| 392 | *lenptr = len; |
| 393 | |
| 394 | return p; |
| 395 | } |
| 396 | |
| 397 | static CORE_ADDR |
| 398 | score_adjust_breakpoint_address (struct gdbarch *gdbarch, CORE_ADDR bpaddr) |
| 399 | { |
| 400 | CORE_ADDR adjust_pc = bpaddr; |
| 401 | |
| 402 | if (target_mach == bfd_mach_score3) |
| 403 | score3_adjust_pc_and_fetch_inst (&adjust_pc, NULL, |
| 404 | gdbarch_byte_order (gdbarch)); |
| 405 | else |
| 406 | adjust_pc = align_down (adjust_pc, 2); |
| 407 | |
| 408 | return adjust_pc; |
| 409 | } |
| 410 | |
| 411 | static CORE_ADDR |
| 412 | score_frame_align (struct gdbarch *gdbarch, CORE_ADDR addr) |
| 413 | { |
| 414 | return align_down (addr, 16); |
| 415 | } |
| 416 | |
| 417 | static void |
| 418 | score_xfer_register (struct regcache *regcache, int regnum, int length, |
| 419 | enum bfd_endian endian, gdb_byte *readbuf, |
| 420 | const gdb_byte *writebuf, int buf_offset) |
| 421 | { |
| 422 | int reg_offset = 0; |
| 423 | gdb_assert (regnum >= 0 |
| 424 | && regnum < ((target_mach == bfd_mach_score7) |
| 425 | ? SCORE7_NUM_REGS : SCORE3_NUM_REGS)); |
| 426 | |
| 427 | switch (endian) |
| 428 | { |
| 429 | case BFD_ENDIAN_BIG: |
| 430 | reg_offset = SCORE_REGSIZE - length; |
| 431 | break; |
| 432 | case BFD_ENDIAN_LITTLE: |
| 433 | reg_offset = 0; |
| 434 | break; |
| 435 | case BFD_ENDIAN_UNKNOWN: |
| 436 | reg_offset = 0; |
| 437 | break; |
| 438 | default: |
| 439 | error (_("Error: score_xfer_register in file:%s, line:%d!"), |
| 440 | __FILE__, __LINE__); |
| 441 | } |
| 442 | |
| 443 | if (readbuf != NULL) |
| 444 | regcache_cooked_read_part (regcache, regnum, reg_offset, length, |
| 445 | readbuf + buf_offset); |
| 446 | if (writebuf != NULL) |
| 447 | regcache_cooked_write_part (regcache, regnum, reg_offset, length, |
| 448 | writebuf + buf_offset); |
| 449 | } |
| 450 | |
| 451 | static enum return_value_convention |
| 452 | score_return_value (struct gdbarch *gdbarch, struct value *function, |
| 453 | struct type *type, struct regcache *regcache, |
| 454 | gdb_byte * readbuf, const gdb_byte * writebuf) |
| 455 | { |
| 456 | if (TYPE_CODE (type) == TYPE_CODE_STRUCT |
| 457 | || TYPE_CODE (type) == TYPE_CODE_UNION |
| 458 | || TYPE_CODE (type) == TYPE_CODE_ARRAY) |
| 459 | return RETURN_VALUE_STRUCT_CONVENTION; |
| 460 | else |
| 461 | { |
| 462 | int offset; |
| 463 | int regnum; |
| 464 | for (offset = 0, regnum = SCORE_A0_REGNUM; |
| 465 | offset < TYPE_LENGTH (type); |
| 466 | offset += SCORE_REGSIZE, regnum++) |
| 467 | { |
| 468 | int xfer = SCORE_REGSIZE; |
| 469 | |
| 470 | if (offset + xfer > TYPE_LENGTH (type)) |
| 471 | xfer = TYPE_LENGTH (type) - offset; |
| 472 | score_xfer_register (regcache, regnum, xfer, |
| 473 | gdbarch_byte_order(gdbarch), |
| 474 | readbuf, writebuf, offset); |
| 475 | } |
| 476 | return RETURN_VALUE_REGISTER_CONVENTION; |
| 477 | } |
| 478 | } |
| 479 | |
| 480 | static struct frame_id |
| 481 | score_dummy_id (struct gdbarch *gdbarch, struct frame_info *this_frame) |
| 482 | { |
| 483 | return frame_id_build (get_frame_register_unsigned (this_frame, |
| 484 | SCORE_SP_REGNUM), |
| 485 | get_frame_pc (this_frame)); |
| 486 | } |
| 487 | |
| 488 | static int |
| 489 | score_type_needs_double_align (struct type *type) |
| 490 | { |
| 491 | enum type_code typecode = TYPE_CODE (type); |
| 492 | |
| 493 | if ((typecode == TYPE_CODE_INT && TYPE_LENGTH (type) == 8) |
| 494 | || (typecode == TYPE_CODE_FLT && TYPE_LENGTH (type) == 8)) |
| 495 | return 1; |
| 496 | else if (typecode == TYPE_CODE_STRUCT || typecode == TYPE_CODE_UNION) |
| 497 | { |
| 498 | int i, n; |
| 499 | |
| 500 | n = TYPE_NFIELDS (type); |
| 501 | for (i = 0; i < n; i++) |
| 502 | if (score_type_needs_double_align (TYPE_FIELD_TYPE (type, i))) |
| 503 | return 1; |
| 504 | return 0; |
| 505 | } |
| 506 | return 0; |
| 507 | } |
| 508 | |
| 509 | static CORE_ADDR |
| 510 | score_push_dummy_call (struct gdbarch *gdbarch, struct value *function, |
| 511 | struct regcache *regcache, CORE_ADDR bp_addr, |
| 512 | int nargs, struct value **args, CORE_ADDR sp, |
| 513 | int struct_return, CORE_ADDR struct_addr) |
| 514 | { |
| 515 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
| 516 | int argnum; |
| 517 | int argreg; |
| 518 | int arglen = 0; |
| 519 | CORE_ADDR stack_offset = 0; |
| 520 | CORE_ADDR addr = 0; |
| 521 | |
| 522 | /* Step 1, Save RA. */ |
| 523 | regcache_cooked_write_unsigned (regcache, SCORE_RA_REGNUM, bp_addr); |
| 524 | |
| 525 | /* Step 2, Make space on the stack for the args. */ |
| 526 | struct_addr = align_down (struct_addr, 16); |
| 527 | sp = align_down (sp, 16); |
| 528 | for (argnum = 0; argnum < nargs; argnum++) |
| 529 | arglen += align_up (TYPE_LENGTH (value_type (args[argnum])), |
| 530 | SCORE_REGSIZE); |
| 531 | sp -= align_up (arglen, 16); |
| 532 | |
| 533 | argreg = SCORE_BEGIN_ARG_REGNUM; |
| 534 | |
| 535 | /* Step 3, Check if struct return then save the struct address to |
| 536 | r4 and increase the stack_offset by 4. */ |
| 537 | if (struct_return) |
| 538 | { |
| 539 | regcache_cooked_write_unsigned (regcache, argreg++, struct_addr); |
| 540 | stack_offset += SCORE_REGSIZE; |
| 541 | } |
| 542 | |
| 543 | /* Step 4, Load arguments: |
| 544 | If arg length is too long (> 4 bytes), then split the arg and |
| 545 | save every parts. */ |
| 546 | for (argnum = 0; argnum < nargs; argnum++) |
| 547 | { |
| 548 | struct value *arg = args[argnum]; |
| 549 | struct type *arg_type = check_typedef (value_type (arg)); |
| 550 | enum type_code typecode = TYPE_CODE (arg_type); |
| 551 | const gdb_byte *val = value_contents (arg); |
| 552 | int downward_offset = 0; |
| 553 | int odd_sized_struct_p; |
| 554 | int arg_last_part_p = 0; |
| 555 | |
| 556 | arglen = TYPE_LENGTH (arg_type); |
| 557 | odd_sized_struct_p = (arglen > SCORE_REGSIZE |
| 558 | && arglen % SCORE_REGSIZE != 0); |
| 559 | |
| 560 | /* If a arg should be aligned to 8 bytes (long long or double), |
| 561 | the value should be put to even register numbers. */ |
| 562 | if (score_type_needs_double_align (arg_type)) |
| 563 | { |
| 564 | if (argreg & 1) |
| 565 | argreg++; |
| 566 | } |
| 567 | |
| 568 | /* If sizeof a block < SCORE_REGSIZE, then Score GCC will chose |
| 569 | the default "downward"/"upward" method: |
| 570 | |
| 571 | Example: |
| 572 | |
| 573 | struct struc |
| 574 | { |
| 575 | char a; char b; char c; |
| 576 | } s = {'a', 'b', 'c'}; |
| 577 | |
| 578 | Big endian: s = {X, 'a', 'b', 'c'} |
| 579 | Little endian: s = {'a', 'b', 'c', X} |
| 580 | |
| 581 | Where X is a hole. */ |
| 582 | |
| 583 | if (gdbarch_byte_order(gdbarch) == BFD_ENDIAN_BIG |
| 584 | && (typecode == TYPE_CODE_STRUCT |
| 585 | || typecode == TYPE_CODE_UNION) |
| 586 | && argreg > SCORE_LAST_ARG_REGNUM |
| 587 | && arglen < SCORE_REGSIZE) |
| 588 | downward_offset += (SCORE_REGSIZE - arglen); |
| 589 | |
| 590 | while (arglen > 0) |
| 591 | { |
| 592 | int partial_len = arglen < SCORE_REGSIZE ? arglen : SCORE_REGSIZE; |
| 593 | ULONGEST regval = extract_unsigned_integer (val, partial_len, |
| 594 | byte_order); |
| 595 | |
| 596 | /* The last part of a arg should shift left when |
| 597 | gdbarch_byte_order is BFD_ENDIAN_BIG. */ |
| 598 | if (byte_order == BFD_ENDIAN_BIG |
| 599 | && arg_last_part_p == 1 |
| 600 | && (typecode == TYPE_CODE_STRUCT |
| 601 | || typecode == TYPE_CODE_UNION)) |
| 602 | regval <<= ((SCORE_REGSIZE - partial_len) * TARGET_CHAR_BIT); |
| 603 | |
| 604 | /* Always increase the stack_offset and save args to stack. */ |
| 605 | addr = sp + stack_offset + downward_offset; |
| 606 | write_memory (addr, val, partial_len); |
| 607 | |
| 608 | if (argreg <= SCORE_LAST_ARG_REGNUM) |
| 609 | { |
| 610 | regcache_cooked_write_unsigned (regcache, argreg++, regval); |
| 611 | if (arglen > SCORE_REGSIZE && arglen < SCORE_REGSIZE * 2) |
| 612 | arg_last_part_p = 1; |
| 613 | } |
| 614 | |
| 615 | val += partial_len; |
| 616 | arglen -= partial_len; |
| 617 | stack_offset += align_up (partial_len, SCORE_REGSIZE); |
| 618 | } |
| 619 | } |
| 620 | |
| 621 | /* Step 5, Save SP. */ |
| 622 | regcache_cooked_write_unsigned (regcache, SCORE_SP_REGNUM, sp); |
| 623 | |
| 624 | return sp; |
| 625 | } |
| 626 | |
| 627 | static CORE_ADDR |
| 628 | score7_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR pc) |
| 629 | { |
| 630 | CORE_ADDR cpc = pc; |
| 631 | int iscan = 32, stack_sub = 0; |
| 632 | while (iscan-- > 0) |
| 633 | { |
| 634 | inst_t *inst = score7_fetch_inst (gdbarch, cpc, NULL); |
| 635 | if (!inst) |
| 636 | break; |
| 637 | if ((inst->len == 4) && !stack_sub |
| 638 | && (G_FLD (inst->v, 29, 25) == 0x1 |
| 639 | && G_FLD (inst->v, 24, 20) == 0x0)) |
| 640 | { |
| 641 | /* addi r0, offset */ |
| 642 | stack_sub = cpc + SCORE_INSTLEN; |
| 643 | pc = cpc + SCORE_INSTLEN; |
| 644 | } |
| 645 | else if ((inst->len == 4) |
| 646 | && (G_FLD (inst->v, 29, 25) == 0x0) |
| 647 | && (G_FLD (inst->v, 24, 20) == 0x2) |
| 648 | && (G_FLD (inst->v, 19, 15) == 0x0) |
| 649 | && (G_FLD (inst->v, 14, 10) == 0xF) |
| 650 | && (G_FLD (inst->v, 9, 0) == 0x56)) |
| 651 | { |
| 652 | /* mv r2, r0 */ |
| 653 | pc = cpc + SCORE_INSTLEN; |
| 654 | break; |
| 655 | } |
| 656 | else if ((inst->len == 2) |
| 657 | && (G_FLD (inst->v, 14, 12) == 0x0) |
| 658 | && (G_FLD (inst->v, 11, 8) == 0x2) |
| 659 | && (G_FLD (inst->v, 7, 4) == 0x0) |
| 660 | && (G_FLD (inst->v, 3, 0) == 0x3)) |
| 661 | { |
| 662 | /* mv! r2, r0 */ |
| 663 | pc = cpc + SCORE16_INSTLEN; |
| 664 | break; |
| 665 | } |
| 666 | else if ((inst->len == 2) |
| 667 | && ((G_FLD (inst->v, 14, 12) == 3) /* j15 form */ |
| 668 | || (G_FLD (inst->v, 14, 12) == 4) /* b15 form */ |
| 669 | || (G_FLD (inst->v, 14, 12) == 0x0 |
| 670 | && G_FLD (inst->v, 3, 0) == 0x4))) /* br! */ |
| 671 | break; |
| 672 | else if ((inst->len == 4) |
| 673 | && ((G_FLD (inst->v, 29, 25) == 2) /* j32 form */ |
| 674 | || (G_FLD (inst->v, 29, 25) == 4) /* b32 form */ |
| 675 | || (G_FLD (inst->v, 29, 25) == 0x0 |
| 676 | && G_FLD (inst->v, 6, 1) == 0x4))) /* br */ |
| 677 | break; |
| 678 | |
| 679 | cpc += (inst->len == 2) ? SCORE16_INSTLEN : SCORE_INSTLEN; |
| 680 | } |
| 681 | return pc; |
| 682 | } |
| 683 | |
| 684 | static CORE_ADDR |
| 685 | score3_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR pc) |
| 686 | { |
| 687 | CORE_ADDR cpc = pc; |
| 688 | int iscan = 32, stack_sub = 0; |
| 689 | while (iscan-- > 0) |
| 690 | { |
| 691 | inst_t *inst |
| 692 | = score3_adjust_pc_and_fetch_inst (&cpc, NULL, |
| 693 | gdbarch_byte_order (gdbarch)); |
| 694 | |
| 695 | if (!inst) |
| 696 | break; |
| 697 | if (inst->len == 4 && !stack_sub |
| 698 | && (G_FLD (inst->v, 29, 25) == 0x1) |
| 699 | && (G_FLD (inst->v, 19, 17) == 0x0) |
| 700 | && (G_FLD (inst->v, 24, 20) == 0x0)) |
| 701 | { |
| 702 | /* addi r0, offset */ |
| 703 | stack_sub = cpc + inst->len; |
| 704 | pc = cpc + inst->len; |
| 705 | } |
| 706 | else if (inst->len == 4 |
| 707 | && (G_FLD (inst->v, 29, 25) == 0x0) |
| 708 | && (G_FLD (inst->v, 24, 20) == 0x2) |
| 709 | && (G_FLD (inst->v, 19, 15) == 0x0) |
| 710 | && (G_FLD (inst->v, 14, 10) == 0xF) |
| 711 | && (G_FLD (inst->v, 9, 0) == 0x56)) |
| 712 | { |
| 713 | /* mv r2, r0 */ |
| 714 | pc = cpc + inst->len; |
| 715 | break; |
| 716 | } |
| 717 | else if ((inst->len == 2) |
| 718 | && (G_FLD (inst->v, 14, 10) == 0x10) |
| 719 | && (G_FLD (inst->v, 9, 5) == 0x2) |
| 720 | && (G_FLD (inst->v, 4, 0) == 0x0)) |
| 721 | { |
| 722 | /* mv! r2, r0 */ |
| 723 | pc = cpc + inst->len; |
| 724 | break; |
| 725 | } |
| 726 | else if (inst->len == 2 |
| 727 | && ((G_FLD (inst->v, 14, 12) == 3) /* b15 form */ |
| 728 | || (G_FLD (inst->v, 14, 12) == 0x0 |
| 729 | && G_FLD (inst->v, 11, 5) == 0x4))) /* br! */ |
| 730 | break; |
| 731 | else if (inst->len == 4 |
| 732 | && ((G_FLD (inst->v, 29, 25) == 2) /* j32 form */ |
| 733 | || (G_FLD (inst->v, 29, 25) == 4))) /* b32 form */ |
| 734 | break; |
| 735 | |
| 736 | cpc += inst->len; |
| 737 | } |
| 738 | return pc; |
| 739 | } |
| 740 | |
| 741 | static int |
| 742 | score7_in_function_epilogue_p (struct gdbarch *gdbarch, CORE_ADDR cur_pc) |
| 743 | { |
| 744 | inst_t *inst = score7_fetch_inst (gdbarch, cur_pc, NULL); |
| 745 | |
| 746 | if (inst->v == 0x23) |
| 747 | return 1; /* mv! r0, r2 */ |
| 748 | else if (G_FLD (inst->v, 14, 12) == 0x2 |
| 749 | && G_FLD (inst->v, 3, 0) == 0xa) |
| 750 | return 1; /* pop! */ |
| 751 | else if (G_FLD (inst->v, 14, 12) == 0x0 |
| 752 | && G_FLD (inst->v, 7, 0) == 0x34) |
| 753 | return 1; /* br! r3 */ |
| 754 | else if (G_FLD (inst->v, 29, 15) == 0x2 |
| 755 | && G_FLD (inst->v, 6, 1) == 0x2b) |
| 756 | return 1; /* mv r0, r2 */ |
| 757 | else if (G_FLD (inst->v, 29, 25) == 0x0 |
| 758 | && G_FLD (inst->v, 6, 1) == 0x4 |
| 759 | && G_FLD (inst->v, 19, 15) == 0x3) |
| 760 | return 1; /* br r3 */ |
| 761 | else |
| 762 | return 0; |
| 763 | } |
| 764 | |
| 765 | static int |
| 766 | score3_in_function_epilogue_p (struct gdbarch *gdbarch, CORE_ADDR cur_pc) |
| 767 | { |
| 768 | CORE_ADDR pc = cur_pc; |
| 769 | inst_t *inst |
| 770 | = score3_adjust_pc_and_fetch_inst (&pc, NULL, |
| 771 | gdbarch_byte_order (gdbarch)); |
| 772 | |
| 773 | if (inst->len == 2 |
| 774 | && (G_FLD (inst->v, 14, 10) == 0x10) |
| 775 | && (G_FLD (inst->v, 9, 5) == 0x0) |
| 776 | && (G_FLD (inst->v, 4, 0) == 0x2)) |
| 777 | return 1; /* mv! r0, r2 */ |
| 778 | else if (inst->len == 4 |
| 779 | && (G_FLD (inst->v, 29, 25) == 0x0) |
| 780 | && (G_FLD (inst->v, 24, 20) == 0x2) |
| 781 | && (G_FLD (inst->v, 19, 15) == 0x0) |
| 782 | && (G_FLD (inst->v, 14, 10) == 0xF) |
| 783 | && (G_FLD (inst->v, 9, 0) == 0x56)) |
| 784 | return 1; /* mv r0, r2 */ |
| 785 | else if (inst->len == 2 |
| 786 | && (G_FLD (inst->v, 14, 12) == 0x0) |
| 787 | && (G_FLD (inst->v, 11, 5) == 0x2)) |
| 788 | return 1; /* pop! */ |
| 789 | else if (inst->len == 2 |
| 790 | && (G_FLD (inst->v, 14, 12) == 0x0) |
| 791 | && (G_FLD (inst->v, 11, 7) == 0x0) |
| 792 | && (G_FLD (inst->v, 6, 5) == 0x2)) |
| 793 | return 1; /* rpop! */ |
| 794 | else if (inst->len == 2 |
| 795 | && (G_FLD (inst->v, 14, 12) == 0x0) |
| 796 | && (G_FLD (inst->v, 11, 5) == 0x4) |
| 797 | && (G_FLD (inst->v, 4, 0) == 0x3)) |
| 798 | return 1; /* br! r3 */ |
| 799 | else if (inst->len == 4 |
| 800 | && (G_FLD (inst->v, 29, 25) == 0x0) |
| 801 | && (G_FLD (inst->v, 24, 20) == 0x0) |
| 802 | && (G_FLD (inst->v, 19, 15) == 0x3) |
| 803 | && (G_FLD (inst->v, 14, 10) == 0xF) |
| 804 | && (G_FLD (inst->v, 9, 0) == 0x8)) |
| 805 | return 1; /* br r3 */ |
| 806 | else |
| 807 | return 0; |
| 808 | } |
| 809 | |
| 810 | static gdb_byte * |
| 811 | score7_malloc_and_get_memblock (CORE_ADDR addr, CORE_ADDR size) |
| 812 | { |
| 813 | int ret; |
| 814 | gdb_byte *memblock = NULL; |
| 815 | |
| 816 | if (size < 0) |
| 817 | { |
| 818 | error (_("Error: malloc size < 0 in file:%s, line:%d!"), |
| 819 | __FILE__, __LINE__); |
| 820 | return NULL; |
| 821 | } |
| 822 | else if (size == 0) |
| 823 | return NULL; |
| 824 | |
| 825 | memblock = xmalloc (size); |
| 826 | memset (memblock, 0, size); |
| 827 | ret = target_read_memory (addr & ~0x3, memblock, size); |
| 828 | if (ret) |
| 829 | { |
| 830 | error (_("Error: target_read_memory in file:%s, line:%d!"), |
| 831 | __FILE__, __LINE__); |
| 832 | return NULL; |
| 833 | } |
| 834 | return memblock; |
| 835 | } |
| 836 | |
| 837 | static void |
| 838 | score7_free_memblock (gdb_byte *memblock) |
| 839 | { |
| 840 | xfree (memblock); |
| 841 | } |
| 842 | |
| 843 | static void |
| 844 | score7_adjust_memblock_ptr (gdb_byte **memblock, CORE_ADDR prev_pc, |
| 845 | CORE_ADDR cur_pc) |
| 846 | { |
| 847 | if (prev_pc == -1) |
| 848 | { |
| 849 | /* First time call this function, do nothing. */ |
| 850 | } |
| 851 | else if (cur_pc - prev_pc == 2 && (cur_pc & 0x3) == 0) |
| 852 | { |
| 853 | /* First 16-bit instruction, then 32-bit instruction. */ |
| 854 | *memblock += SCORE_INSTLEN; |
| 855 | } |
| 856 | else if (cur_pc - prev_pc == 4) |
| 857 | { |
| 858 | /* Is 32-bit instruction, increase MEMBLOCK by 4. */ |
| 859 | *memblock += SCORE_INSTLEN; |
| 860 | } |
| 861 | } |
| 862 | |
| 863 | static void |
| 864 | score7_analyze_prologue (CORE_ADDR startaddr, CORE_ADDR pc, |
| 865 | struct frame_info *this_frame, |
| 866 | struct score_frame_cache *this_cache) |
| 867 | { |
| 868 | struct gdbarch *gdbarch = get_frame_arch (this_frame); |
| 869 | CORE_ADDR sp; |
| 870 | CORE_ADDR fp; |
| 871 | CORE_ADDR cur_pc = startaddr; |
| 872 | |
| 873 | int sp_offset = 0; |
| 874 | int ra_offset = 0; |
| 875 | int fp_offset = 0; |
| 876 | int ra_offset_p = 0; |
| 877 | int fp_offset_p = 0; |
| 878 | int inst_len = 0; |
| 879 | |
| 880 | gdb_byte *memblock = NULL; |
| 881 | gdb_byte *memblock_ptr = NULL; |
| 882 | CORE_ADDR prev_pc = -1; |
| 883 | |
| 884 | /* Allocate MEMBLOCK if PC - STARTADDR > 0. */ |
| 885 | memblock_ptr = memblock = |
| 886 | score7_malloc_and_get_memblock (startaddr, pc - startaddr); |
| 887 | |
| 888 | sp = get_frame_register_unsigned (this_frame, SCORE_SP_REGNUM); |
| 889 | fp = get_frame_register_unsigned (this_frame, SCORE_FP_REGNUM); |
| 890 | |
| 891 | for (; cur_pc < pc; prev_pc = cur_pc, cur_pc += inst_len) |
| 892 | { |
| 893 | inst_t *inst = NULL; |
| 894 | if (memblock != NULL) |
| 895 | { |
| 896 | /* Reading memory block from target succefully and got all |
| 897 | the instructions(from STARTADDR to PC) needed. */ |
| 898 | score7_adjust_memblock_ptr (&memblock, prev_pc, cur_pc); |
| 899 | inst = score7_fetch_inst (gdbarch, cur_pc, memblock); |
| 900 | } |
| 901 | else |
| 902 | { |
| 903 | /* Otherwise, we fetch 4 bytes from target, and GDB also |
| 904 | work correctly. */ |
| 905 | inst = score7_fetch_inst (gdbarch, cur_pc, NULL); |
| 906 | } |
| 907 | |
| 908 | /* FIXME: make a full-power prologue analyzer. */ |
| 909 | if (inst->len == 2) |
| 910 | { |
| 911 | inst_len = SCORE16_INSTLEN; |
| 912 | |
| 913 | if (G_FLD (inst->v, 14, 12) == 0x2 |
| 914 | && G_FLD (inst->v, 3, 0) == 0xe) |
| 915 | { |
| 916 | /* push! */ |
| 917 | sp_offset += 4; |
| 918 | |
| 919 | if (G_FLD (inst->v, 11, 7) == 0x6 |
| 920 | && ra_offset_p == 0) |
| 921 | { |
| 922 | /* push! r3, [r0] */ |
| 923 | ra_offset = sp_offset; |
| 924 | ra_offset_p = 1; |
| 925 | } |
| 926 | else if (G_FLD (inst->v, 11, 7) == 0x4 |
| 927 | && fp_offset_p == 0) |
| 928 | { |
| 929 | /* push! r2, [r0] */ |
| 930 | fp_offset = sp_offset; |
| 931 | fp_offset_p = 1; |
| 932 | } |
| 933 | } |
| 934 | else if (G_FLD (inst->v, 14, 12) == 0x2 |
| 935 | && G_FLD (inst->v, 3, 0) == 0xa) |
| 936 | { |
| 937 | /* pop! */ |
| 938 | sp_offset -= 4; |
| 939 | } |
| 940 | else if (G_FLD (inst->v, 14, 7) == 0xc1 |
| 941 | && G_FLD (inst->v, 2, 0) == 0x0) |
| 942 | { |
| 943 | /* subei! r0, n */ |
| 944 | sp_offset += (int) pow (2, G_FLD (inst->v, 6, 3)); |
| 945 | } |
| 946 | else if (G_FLD (inst->v, 14, 7) == 0xc0 |
| 947 | && G_FLD (inst->v, 2, 0) == 0x0) |
| 948 | { |
| 949 | /* addei! r0, n */ |
| 950 | sp_offset -= (int) pow (2, G_FLD (inst->v, 6, 3)); |
| 951 | } |
| 952 | } |
| 953 | else |
| 954 | { |
| 955 | inst_len = SCORE_INSTLEN; |
| 956 | |
| 957 | if (G_FLD(inst->v, 29, 25) == 0x3 |
| 958 | && G_FLD(inst->v, 2, 0) == 0x4 |
| 959 | && G_FLD(inst->v, 19, 15) == 0) |
| 960 | { |
| 961 | /* sw rD, [r0, offset]+ */ |
| 962 | sp_offset += SCORE_INSTLEN; |
| 963 | |
| 964 | if (G_FLD(inst->v, 24, 20) == 0x3) |
| 965 | { |
| 966 | /* rD = r3 */ |
| 967 | if (ra_offset_p == 0) |
| 968 | { |
| 969 | ra_offset = sp_offset; |
| 970 | ra_offset_p = 1; |
| 971 | } |
| 972 | } |
| 973 | else if (G_FLD(inst->v, 24, 20) == 0x2) |
| 974 | { |
| 975 | /* rD = r2 */ |
| 976 | if (fp_offset_p == 0) |
| 977 | { |
| 978 | fp_offset = sp_offset; |
| 979 | fp_offset_p = 1; |
| 980 | } |
| 981 | } |
| 982 | } |
| 983 | else if (G_FLD(inst->v, 29, 25) == 0x14 |
| 984 | && G_FLD(inst->v, 19,15) == 0) |
| 985 | { |
| 986 | /* sw rD, [r0, offset] */ |
| 987 | if (G_FLD(inst->v, 24, 20) == 0x3) |
| 988 | { |
| 989 | /* rD = r3 */ |
| 990 | ra_offset = sp_offset - G_FLD(inst->v, 14, 0); |
| 991 | ra_offset_p = 1; |
| 992 | } |
| 993 | else if (G_FLD(inst->v, 24, 20) == 0x2) |
| 994 | { |
| 995 | /* rD = r2 */ |
| 996 | fp_offset = sp_offset - G_FLD(inst->v, 14, 0); |
| 997 | fp_offset_p = 1; |
| 998 | } |
| 999 | } |
| 1000 | else if (G_FLD (inst->v, 29, 15) == 0x1c60 |
| 1001 | && G_FLD (inst->v, 2, 0) == 0x0) |
| 1002 | { |
| 1003 | /* lw r3, [r0]+, 4 */ |
| 1004 | sp_offset -= SCORE_INSTLEN; |
| 1005 | ra_offset_p = 1; |
| 1006 | } |
| 1007 | else if (G_FLD (inst->v, 29, 15) == 0x1c40 |
| 1008 | && G_FLD (inst->v, 2, 0) == 0x0) |
| 1009 | { |
| 1010 | /* lw r2, [r0]+, 4 */ |
| 1011 | sp_offset -= SCORE_INSTLEN; |
| 1012 | fp_offset_p = 1; |
| 1013 | } |
| 1014 | |
| 1015 | else if (G_FLD (inst->v, 29, 17) == 0x100 |
| 1016 | && G_FLD (inst->v, 0, 0) == 0x0) |
| 1017 | { |
| 1018 | /* addi r0, -offset */ |
| 1019 | sp_offset += 65536 - G_FLD (inst->v, 16, 1); |
| 1020 | } |
| 1021 | else if (G_FLD (inst->v, 29, 17) == 0x110 |
| 1022 | && G_FLD (inst->v, 0, 0) == 0x0) |
| 1023 | { |
| 1024 | /* addi r2, offset */ |
| 1025 | if (pc - cur_pc > 4) |
| 1026 | { |
| 1027 | unsigned int save_v = inst->v; |
| 1028 | inst_t *inst2 = |
| 1029 | score7_fetch_inst (gdbarch, cur_pc + SCORE_INSTLEN, NULL); |
| 1030 | if (inst2->v == 0x23) |
| 1031 | { |
| 1032 | /* mv! r0, r2 */ |
| 1033 | sp_offset -= G_FLD (save_v, 16, 1); |
| 1034 | } |
| 1035 | } |
| 1036 | } |
| 1037 | } |
| 1038 | } |
| 1039 | |
| 1040 | /* Save RA. */ |
| 1041 | if (ra_offset_p == 1) |
| 1042 | { |
| 1043 | if (this_cache->saved_regs[SCORE_PC_REGNUM].addr == -1) |
| 1044 | this_cache->saved_regs[SCORE_PC_REGNUM].addr = |
| 1045 | sp + sp_offset - ra_offset; |
| 1046 | } |
| 1047 | else |
| 1048 | { |
| 1049 | this_cache->saved_regs[SCORE_PC_REGNUM] = |
| 1050 | this_cache->saved_regs[SCORE_RA_REGNUM]; |
| 1051 | } |
| 1052 | |
| 1053 | /* Save FP. */ |
| 1054 | if (fp_offset_p == 1) |
| 1055 | { |
| 1056 | if (this_cache->saved_regs[SCORE_FP_REGNUM].addr == -1) |
| 1057 | this_cache->saved_regs[SCORE_FP_REGNUM].addr = |
| 1058 | sp + sp_offset - fp_offset; |
| 1059 | } |
| 1060 | |
| 1061 | /* Save SP and FP. */ |
| 1062 | this_cache->base = sp + sp_offset; |
| 1063 | this_cache->fp = fp; |
| 1064 | |
| 1065 | /* Don't forget to free MEMBLOCK if we allocated it. */ |
| 1066 | if (memblock_ptr != NULL) |
| 1067 | score7_free_memblock (memblock_ptr); |
| 1068 | } |
| 1069 | |
| 1070 | static void |
| 1071 | score3_analyze_prologue (CORE_ADDR startaddr, CORE_ADDR pc, |
| 1072 | struct frame_info *this_frame, |
| 1073 | struct score_frame_cache *this_cache) |
| 1074 | { |
| 1075 | CORE_ADDR sp; |
| 1076 | CORE_ADDR fp; |
| 1077 | CORE_ADDR cur_pc = startaddr; |
| 1078 | enum bfd_endian byte_order |
| 1079 | = gdbarch_byte_order (get_frame_arch (this_frame)); |
| 1080 | |
| 1081 | int sp_offset = 0; |
| 1082 | int ra_offset = 0; |
| 1083 | int fp_offset = 0; |
| 1084 | int ra_offset_p = 0; |
| 1085 | int fp_offset_p = 0; |
| 1086 | int inst_len = 0; |
| 1087 | |
| 1088 | CORE_ADDR prev_pc = -1; |
| 1089 | |
| 1090 | sp = get_frame_register_unsigned (this_frame, SCORE_SP_REGNUM); |
| 1091 | fp = get_frame_register_unsigned (this_frame, SCORE_FP_REGNUM); |
| 1092 | |
| 1093 | for (; cur_pc < pc; prev_pc = cur_pc, cur_pc += inst_len) |
| 1094 | { |
| 1095 | inst_t *inst = NULL; |
| 1096 | |
| 1097 | inst = score3_adjust_pc_and_fetch_inst (&cur_pc, &inst_len, byte_order); |
| 1098 | |
| 1099 | /* FIXME: make a full-power prologue analyzer. */ |
| 1100 | if (inst->len == 2) |
| 1101 | { |
| 1102 | if (G_FLD (inst->v, 14, 12) == 0x0 |
| 1103 | && G_FLD (inst->v, 11, 7) == 0x0 |
| 1104 | && G_FLD (inst->v, 6, 5) == 0x3) |
| 1105 | { |
| 1106 | /* push! */ |
| 1107 | sp_offset += 4; |
| 1108 | |
| 1109 | if (G_FLD (inst->v, 4, 0) == 0x3 |
| 1110 | && ra_offset_p == 0) |
| 1111 | { |
| 1112 | /* push! r3, [r0] */ |
| 1113 | ra_offset = sp_offset; |
| 1114 | ra_offset_p = 1; |
| 1115 | } |
| 1116 | else if (G_FLD (inst->v, 4, 0) == 0x2 |
| 1117 | && fp_offset_p == 0) |
| 1118 | { |
| 1119 | /* push! r2, [r0] */ |
| 1120 | fp_offset = sp_offset; |
| 1121 | fp_offset_p = 1; |
| 1122 | } |
| 1123 | } |
| 1124 | else if (G_FLD (inst->v, 14, 12) == 0x6 |
| 1125 | && G_FLD (inst->v, 11, 10) == 0x3) |
| 1126 | { |
| 1127 | /* rpush! */ |
| 1128 | int start_r = G_FLD (inst->v, 9, 5); |
| 1129 | int cnt = G_FLD (inst->v, 4, 0); |
| 1130 | |
| 1131 | if ((ra_offset_p == 0) |
| 1132 | && (start_r <= SCORE_RA_REGNUM) |
| 1133 | && (SCORE_RA_REGNUM < start_r + cnt)) |
| 1134 | { |
| 1135 | /* rpush! contains r3 */ |
| 1136 | ra_offset_p = 1; |
| 1137 | ra_offset = sp_offset + 4 * (SCORE_RA_REGNUM - start_r) + 4; |
| 1138 | } |
| 1139 | |
| 1140 | if ((fp_offset_p == 0) |
| 1141 | && (start_r <= SCORE_FP_REGNUM) |
| 1142 | && (SCORE_FP_REGNUM < start_r + cnt)) |
| 1143 | { |
| 1144 | /* rpush! contains r2 */ |
| 1145 | fp_offset_p = 1; |
| 1146 | fp_offset = sp_offset + 4 * (SCORE_FP_REGNUM - start_r) + 4; |
| 1147 | } |
| 1148 | |
| 1149 | sp_offset += 4 * cnt; |
| 1150 | } |
| 1151 | else if (G_FLD (inst->v, 14, 12) == 0x0 |
| 1152 | && G_FLD (inst->v, 11, 7) == 0x0 |
| 1153 | && G_FLD (inst->v, 6, 5) == 0x2) |
| 1154 | { |
| 1155 | /* pop! */ |
| 1156 | sp_offset -= 4; |
| 1157 | } |
| 1158 | else if (G_FLD (inst->v, 14, 12) == 0x6 |
| 1159 | && G_FLD (inst->v, 11, 10) == 0x2) |
| 1160 | { |
| 1161 | /* rpop! */ |
| 1162 | sp_offset -= 4 * G_FLD (inst->v, 4, 0); |
| 1163 | } |
| 1164 | else if (G_FLD (inst->v, 14, 12) == 0x5 |
| 1165 | && G_FLD (inst->v, 11, 10) == 0x3 |
| 1166 | && G_FLD (inst->v, 9, 6) == 0x0) |
| 1167 | { |
| 1168 | /* addi! r0, -offset */ |
| 1169 | int imm = G_FLD (inst->v, 5, 0); |
| 1170 | if (imm >> 5) |
| 1171 | imm = -(0x3F - imm + 1); |
| 1172 | sp_offset -= imm; |
| 1173 | } |
| 1174 | else if (G_FLD (inst->v, 14, 12) == 0x5 |
| 1175 | && G_FLD (inst->v, 11, 10) == 0x3 |
| 1176 | && G_FLD (inst->v, 9, 6) == 0x2) |
| 1177 | { |
| 1178 | /* addi! r2, offset */ |
| 1179 | if (pc - cur_pc >= 2) |
| 1180 | { |
| 1181 | unsigned int save_v = inst->v; |
| 1182 | inst_t *inst2; |
| 1183 | |
| 1184 | cur_pc += inst->len; |
| 1185 | inst2 = score3_adjust_pc_and_fetch_inst (&cur_pc, NULL, |
| 1186 | byte_order); |
| 1187 | |
| 1188 | if (inst2->len == 2 |
| 1189 | && G_FLD (inst2->v, 14, 10) == 0x10 |
| 1190 | && G_FLD (inst2->v, 9, 5) == 0x0 |
| 1191 | && G_FLD (inst2->v, 4, 0) == 0x2) |
| 1192 | { |
| 1193 | /* mv! r0, r2 */ |
| 1194 | int imm = G_FLD (inst->v, 5, 0); |
| 1195 | if (imm >> 5) |
| 1196 | imm = -(0x3F - imm + 1); |
| 1197 | sp_offset -= imm; |
| 1198 | } |
| 1199 | } |
| 1200 | } |
| 1201 | } |
| 1202 | else if (inst->len == 4) |
| 1203 | { |
| 1204 | if (G_FLD (inst->v, 29, 25) == 0x3 |
| 1205 | && G_FLD (inst->v, 2, 0) == 0x4 |
| 1206 | && G_FLD (inst->v, 24, 20) == 0x3 |
| 1207 | && G_FLD (inst->v, 19, 15) == 0x0) |
| 1208 | { |
| 1209 | /* sw r3, [r0, offset]+ */ |
| 1210 | sp_offset += inst->len; |
| 1211 | if (ra_offset_p == 0) |
| 1212 | { |
| 1213 | ra_offset = sp_offset; |
| 1214 | ra_offset_p = 1; |
| 1215 | } |
| 1216 | } |
| 1217 | else if (G_FLD (inst->v, 29, 25) == 0x3 |
| 1218 | && G_FLD (inst->v, 2, 0) == 0x4 |
| 1219 | && G_FLD (inst->v, 24, 20) == 0x2 |
| 1220 | && G_FLD (inst->v, 19, 15) == 0x0) |
| 1221 | { |
| 1222 | /* sw r2, [r0, offset]+ */ |
| 1223 | sp_offset += inst->len; |
| 1224 | if (fp_offset_p == 0) |
| 1225 | { |
| 1226 | fp_offset = sp_offset; |
| 1227 | fp_offset_p = 1; |
| 1228 | } |
| 1229 | } |
| 1230 | else if (G_FLD (inst->v, 29, 25) == 0x7 |
| 1231 | && G_FLD (inst->v, 2, 0) == 0x0 |
| 1232 | && G_FLD (inst->v, 24, 20) == 0x3 |
| 1233 | && G_FLD (inst->v, 19, 15) == 0x0) |
| 1234 | { |
| 1235 | /* lw r3, [r0]+, 4 */ |
| 1236 | sp_offset -= inst->len; |
| 1237 | ra_offset_p = 1; |
| 1238 | } |
| 1239 | else if (G_FLD (inst->v, 29, 25) == 0x7 |
| 1240 | && G_FLD (inst->v, 2, 0) == 0x0 |
| 1241 | && G_FLD (inst->v, 24, 20) == 0x2 |
| 1242 | && G_FLD (inst->v, 19, 15) == 0x0) |
| 1243 | { |
| 1244 | /* lw r2, [r0]+, 4 */ |
| 1245 | sp_offset -= inst->len; |
| 1246 | fp_offset_p = 1; |
| 1247 | } |
| 1248 | else if (G_FLD (inst->v, 29, 25) == 0x1 |
| 1249 | && G_FLD (inst->v, 19, 17) == 0x0 |
| 1250 | && G_FLD (inst->v, 24, 20) == 0x0 |
| 1251 | && G_FLD (inst->v, 0, 0) == 0x0) |
| 1252 | { |
| 1253 | /* addi r0, -offset */ |
| 1254 | int imm = G_FLD (inst->v, 16, 1); |
| 1255 | if (imm >> 15) |
| 1256 | imm = -(0xFFFF - imm + 1); |
| 1257 | sp_offset -= imm; |
| 1258 | } |
| 1259 | else if (G_FLD (inst->v, 29, 25) == 0x1 |
| 1260 | && G_FLD (inst->v, 19, 17) == 0x0 |
| 1261 | && G_FLD (inst->v, 24, 20) == 0x2 |
| 1262 | && G_FLD (inst->v, 0, 0) == 0x0) |
| 1263 | { |
| 1264 | /* addi r2, offset */ |
| 1265 | if (pc - cur_pc >= 2) |
| 1266 | { |
| 1267 | unsigned int save_v = inst->v; |
| 1268 | inst_t *inst2; |
| 1269 | |
| 1270 | cur_pc += inst->len; |
| 1271 | inst2 = score3_adjust_pc_and_fetch_inst (&cur_pc, NULL, |
| 1272 | byte_order); |
| 1273 | |
| 1274 | if (inst2->len == 2 |
| 1275 | && G_FLD (inst2->v, 14, 10) == 0x10 |
| 1276 | && G_FLD (inst2->v, 9, 5) == 0x0 |
| 1277 | && G_FLD (inst2->v, 4, 0) == 0x2) |
| 1278 | { |
| 1279 | /* mv! r0, r2 */ |
| 1280 | int imm = G_FLD (inst->v, 16, 1); |
| 1281 | if (imm >> 15) |
| 1282 | imm = -(0xFFFF - imm + 1); |
| 1283 | sp_offset -= imm; |
| 1284 | } |
| 1285 | } |
| 1286 | } |
| 1287 | } |
| 1288 | } |
| 1289 | |
| 1290 | /* Save RA. */ |
| 1291 | if (ra_offset_p == 1) |
| 1292 | { |
| 1293 | if (this_cache->saved_regs[SCORE_PC_REGNUM].addr == -1) |
| 1294 | this_cache->saved_regs[SCORE_PC_REGNUM].addr = |
| 1295 | sp + sp_offset - ra_offset; |
| 1296 | } |
| 1297 | else |
| 1298 | { |
| 1299 | this_cache->saved_regs[SCORE_PC_REGNUM] = |
| 1300 | this_cache->saved_regs[SCORE_RA_REGNUM]; |
| 1301 | } |
| 1302 | |
| 1303 | /* Save FP. */ |
| 1304 | if (fp_offset_p == 1) |
| 1305 | { |
| 1306 | if (this_cache->saved_regs[SCORE_FP_REGNUM].addr == -1) |
| 1307 | this_cache->saved_regs[SCORE_FP_REGNUM].addr = |
| 1308 | sp + sp_offset - fp_offset; |
| 1309 | } |
| 1310 | |
| 1311 | /* Save SP and FP. */ |
| 1312 | this_cache->base = sp + sp_offset; |
| 1313 | this_cache->fp = fp; |
| 1314 | } |
| 1315 | |
| 1316 | static struct score_frame_cache * |
| 1317 | score_make_prologue_cache (struct frame_info *this_frame, void **this_cache) |
| 1318 | { |
| 1319 | struct score_frame_cache *cache; |
| 1320 | |
| 1321 | if ((*this_cache) != NULL) |
| 1322 | return (*this_cache); |
| 1323 | |
| 1324 | cache = FRAME_OBSTACK_ZALLOC (struct score_frame_cache); |
| 1325 | (*this_cache) = cache; |
| 1326 | cache->saved_regs = trad_frame_alloc_saved_regs (this_frame); |
| 1327 | |
| 1328 | /* Analyze the prologue. */ |
| 1329 | { |
| 1330 | const CORE_ADDR pc = get_frame_pc (this_frame); |
| 1331 | CORE_ADDR start_addr; |
| 1332 | |
| 1333 | find_pc_partial_function (pc, NULL, &start_addr, NULL); |
| 1334 | if (start_addr == 0) |
| 1335 | return cache; |
| 1336 | |
| 1337 | if (target_mach == bfd_mach_score3) |
| 1338 | score3_analyze_prologue (start_addr, pc, this_frame, *this_cache); |
| 1339 | else |
| 1340 | score7_analyze_prologue (start_addr, pc, this_frame, *this_cache); |
| 1341 | } |
| 1342 | |
| 1343 | /* Save SP. */ |
| 1344 | trad_frame_set_value (cache->saved_regs, SCORE_SP_REGNUM, cache->base); |
| 1345 | |
| 1346 | return (*this_cache); |
| 1347 | } |
| 1348 | |
| 1349 | static void |
| 1350 | score_prologue_this_id (struct frame_info *this_frame, void **this_cache, |
| 1351 | struct frame_id *this_id) |
| 1352 | { |
| 1353 | struct score_frame_cache *info = score_make_prologue_cache (this_frame, |
| 1354 | this_cache); |
| 1355 | (*this_id) = frame_id_build (info->base, get_frame_func (this_frame)); |
| 1356 | } |
| 1357 | |
| 1358 | static struct value * |
| 1359 | score_prologue_prev_register (struct frame_info *this_frame, |
| 1360 | void **this_cache, int regnum) |
| 1361 | { |
| 1362 | struct score_frame_cache *info = score_make_prologue_cache (this_frame, |
| 1363 | this_cache); |
| 1364 | return trad_frame_get_prev_register (this_frame, info->saved_regs, regnum); |
| 1365 | } |
| 1366 | |
| 1367 | static const struct frame_unwind score_prologue_unwind = |
| 1368 | { |
| 1369 | NORMAL_FRAME, |
| 1370 | default_frame_unwind_stop_reason, |
| 1371 | score_prologue_this_id, |
| 1372 | score_prologue_prev_register, |
| 1373 | NULL, |
| 1374 | default_frame_sniffer, |
| 1375 | NULL |
| 1376 | }; |
| 1377 | |
| 1378 | static CORE_ADDR |
| 1379 | score_prologue_frame_base_address (struct frame_info *this_frame, |
| 1380 | void **this_cache) |
| 1381 | { |
| 1382 | struct score_frame_cache *info = |
| 1383 | score_make_prologue_cache (this_frame, this_cache); |
| 1384 | return info->fp; |
| 1385 | } |
| 1386 | |
| 1387 | static const struct frame_base score_prologue_frame_base = |
| 1388 | { |
| 1389 | &score_prologue_unwind, |
| 1390 | score_prologue_frame_base_address, |
| 1391 | score_prologue_frame_base_address, |
| 1392 | score_prologue_frame_base_address, |
| 1393 | }; |
| 1394 | |
| 1395 | static const struct frame_base * |
| 1396 | score_prologue_frame_base_sniffer (struct frame_info *this_frame) |
| 1397 | { |
| 1398 | return &score_prologue_frame_base; |
| 1399 | } |
| 1400 | |
| 1401 | /* Core file support (dirty hack) |
| 1402 | |
| 1403 | The core file MUST be generated by GNU/Linux on S+core. */ |
| 1404 | |
| 1405 | static void |
| 1406 | score7_linux_supply_gregset(const struct regset *regset, |
| 1407 | struct regcache *regcache, |
| 1408 | int regnum, const void *gregs_buf, size_t len) |
| 1409 | { |
| 1410 | int regno; |
| 1411 | elf_gregset_t *gregs; |
| 1412 | |
| 1413 | gdb_assert (regset != NULL); |
| 1414 | gdb_assert ((regcache != NULL) && (gregs_buf != NULL)); |
| 1415 | |
| 1416 | gregs = (elf_gregset_t *) gregs_buf; |
| 1417 | |
| 1418 | for (regno = 0; regno < 32; regno++) |
| 1419 | if (regnum == -1 || regnum == regno) |
| 1420 | regcache_raw_supply (regcache, regno, gregs->regs + regno); |
| 1421 | |
| 1422 | { |
| 1423 | struct sreg { |
| 1424 | int regnum; |
| 1425 | void *buf; |
| 1426 | } sregs [] = { |
| 1427 | { 55, &(gregs->cel) }, /* CEL */ |
| 1428 | { 54, &(gregs->ceh) }, /* CEH */ |
| 1429 | { 53, &(gregs->sr0) }, /* sr0, i.e. cnt or COUNTER */ |
| 1430 | { 52, &(gregs->sr1) }, /* sr1, i.e. lcr or LDCR */ |
| 1431 | { 51, &(gregs->sr1) }, /* sr2, i.e. scr or STCR */ |
| 1432 | |
| 1433 | /* Exception occured at this address, exactly the PC we want */ |
| 1434 | { 49, &(gregs->cp0_epc) }, /* PC */ |
| 1435 | |
| 1436 | { 38, &(gregs->cp0_ema) }, /* EMA */ |
| 1437 | { 37, &(gregs->cp0_epc) }, /* EPC */ |
| 1438 | { 34, &(gregs->cp0_ecr) }, /* ECR */ |
| 1439 | { 33, &(gregs->cp0_condition) }, /* COND */ |
| 1440 | { 32, &(gregs->cp0_psr) }, /* PSR */ |
| 1441 | }; |
| 1442 | |
| 1443 | for (regno = 0; regno < sizeof(sregs)/sizeof(sregs[0]); regno++) |
| 1444 | if (regnum == -1 || regnum == sregs[regno].regnum) |
| 1445 | regcache_raw_supply (regcache, |
| 1446 | sregs[regno].regnum, sregs[regno].buf); |
| 1447 | } |
| 1448 | } |
| 1449 | |
| 1450 | /* Return the appropriate register set from the core section identified |
| 1451 | by SECT_NAME and SECT_SIZE. */ |
| 1452 | |
| 1453 | static const struct regset * |
| 1454 | score7_linux_regset_from_core_section(struct gdbarch *gdbarch, |
| 1455 | const char *sect_name, size_t sect_size) |
| 1456 | { |
| 1457 | struct gdbarch_tdep *tdep; |
| 1458 | |
| 1459 | gdb_assert (gdbarch != NULL); |
| 1460 | gdb_assert (sect_name != NULL); |
| 1461 | |
| 1462 | tdep = gdbarch_tdep (gdbarch); |
| 1463 | |
| 1464 | if (strcmp(sect_name, ".reg") == 0 && sect_size == sizeof(elf_gregset_t)) |
| 1465 | { |
| 1466 | if (tdep->gregset == NULL) |
| 1467 | tdep->gregset = regset_alloc (gdbarch, |
| 1468 | score7_linux_supply_gregset, NULL); |
| 1469 | return tdep->gregset; |
| 1470 | } |
| 1471 | |
| 1472 | return NULL; |
| 1473 | } |
| 1474 | |
| 1475 | static struct gdbarch * |
| 1476 | score_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) |
| 1477 | { |
| 1478 | struct gdbarch *gdbarch; |
| 1479 | struct gdbarch_tdep *tdep; |
| 1480 | target_mach = info.bfd_arch_info->mach; |
| 1481 | |
| 1482 | arches = gdbarch_list_lookup_by_info (arches, &info); |
| 1483 | if (arches != NULL) |
| 1484 | { |
| 1485 | return (arches->gdbarch); |
| 1486 | } |
| 1487 | tdep = xcalloc(1, sizeof(struct gdbarch_tdep)); |
| 1488 | gdbarch = gdbarch_alloc (&info, tdep); |
| 1489 | |
| 1490 | set_gdbarch_short_bit (gdbarch, 16); |
| 1491 | set_gdbarch_int_bit (gdbarch, 32); |
| 1492 | set_gdbarch_float_bit (gdbarch, 32); |
| 1493 | set_gdbarch_double_bit (gdbarch, 64); |
| 1494 | set_gdbarch_long_double_bit (gdbarch, 64); |
| 1495 | #if WITH_SIM |
| 1496 | set_gdbarch_register_sim_regno (gdbarch, score_register_sim_regno); |
| 1497 | #endif |
| 1498 | set_gdbarch_pc_regnum (gdbarch, SCORE_PC_REGNUM); |
| 1499 | set_gdbarch_sp_regnum (gdbarch, SCORE_SP_REGNUM); |
| 1500 | set_gdbarch_adjust_breakpoint_address (gdbarch, |
| 1501 | score_adjust_breakpoint_address); |
| 1502 | set_gdbarch_register_type (gdbarch, score_register_type); |
| 1503 | set_gdbarch_frame_align (gdbarch, score_frame_align); |
| 1504 | set_gdbarch_inner_than (gdbarch, core_addr_lessthan); |
| 1505 | set_gdbarch_unwind_sp (gdbarch, score_unwind_sp); |
| 1506 | set_gdbarch_unwind_pc (gdbarch, score_unwind_pc); |
| 1507 | set_gdbarch_print_insn (gdbarch, score_print_insn); |
| 1508 | |
| 1509 | switch (target_mach) |
| 1510 | { |
| 1511 | case bfd_mach_score7: |
| 1512 | set_gdbarch_breakpoint_from_pc (gdbarch, score7_breakpoint_from_pc); |
| 1513 | set_gdbarch_skip_prologue (gdbarch, score7_skip_prologue); |
| 1514 | set_gdbarch_in_function_epilogue_p (gdbarch, |
| 1515 | score7_in_function_epilogue_p); |
| 1516 | set_gdbarch_register_name (gdbarch, score7_register_name); |
| 1517 | set_gdbarch_num_regs (gdbarch, SCORE7_NUM_REGS); |
| 1518 | /* Core file support. */ |
| 1519 | set_gdbarch_regset_from_core_section (gdbarch, |
| 1520 | score7_linux_regset_from_core_section); |
| 1521 | break; |
| 1522 | |
| 1523 | case bfd_mach_score3: |
| 1524 | set_gdbarch_breakpoint_from_pc (gdbarch, score3_breakpoint_from_pc); |
| 1525 | set_gdbarch_skip_prologue (gdbarch, score3_skip_prologue); |
| 1526 | set_gdbarch_in_function_epilogue_p (gdbarch, |
| 1527 | score3_in_function_epilogue_p); |
| 1528 | set_gdbarch_register_name (gdbarch, score3_register_name); |
| 1529 | set_gdbarch_num_regs (gdbarch, SCORE3_NUM_REGS); |
| 1530 | break; |
| 1531 | } |
| 1532 | |
| 1533 | /* Watchpoint hooks. */ |
| 1534 | set_gdbarch_have_nonsteppable_watchpoint (gdbarch, 1); |
| 1535 | |
| 1536 | /* Dummy frame hooks. */ |
| 1537 | set_gdbarch_return_value (gdbarch, score_return_value); |
| 1538 | set_gdbarch_call_dummy_location (gdbarch, AT_ENTRY_POINT); |
| 1539 | set_gdbarch_dummy_id (gdbarch, score_dummy_id); |
| 1540 | set_gdbarch_push_dummy_call (gdbarch, score_push_dummy_call); |
| 1541 | |
| 1542 | /* Normal frame hooks. */ |
| 1543 | dwarf2_append_unwinders (gdbarch); |
| 1544 | frame_base_append_sniffer (gdbarch, dwarf2_frame_base_sniffer); |
| 1545 | frame_unwind_append_unwinder (gdbarch, &score_prologue_unwind); |
| 1546 | frame_base_append_sniffer (gdbarch, score_prologue_frame_base_sniffer); |
| 1547 | |
| 1548 | return gdbarch; |
| 1549 | } |
| 1550 | |
| 1551 | extern initialize_file_ftype _initialize_score_tdep; |
| 1552 | |
| 1553 | void |
| 1554 | _initialize_score_tdep (void) |
| 1555 | { |
| 1556 | gdbarch_register (bfd_arch_score, score_gdbarch_init, NULL); |
| 1557 | } |