1 /* Target-dependent code for the S+core architecture, for GDB,
4 Copyright (C) 2006, 2007 Free Software Foundation, Inc.
6 Contributed by Qinwei (qinwei@sunnorth.com.cn)
7 Contributed by Ching-Peng Lin (cplin@sunplus.com)
9 This file is part of GDB.
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 2 of the License, or
14 (at your option) any later version.
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.
21 You should have received a copy of the GNU General Public License
22 along with this program; if not, write to the Free Software
23 Foundation, Inc., 51 Franklin Street, Fifth Floor,
24 Boston, MA 02110-1301, USA. */
27 #include "gdb_assert.h"
33 #include "arch-utils.h"
36 #include "frame-unwind.h"
37 #include "frame-base.h"
38 #include "trad-frame.h"
39 #include "dwarf2-frame.h"
40 #include "score-tdep.h"
42 #define G_FLD(_i,_ms,_ls) (((_i) << (31 - (_ms))) >> (31 - (_ms) + (_ls)))
43 #define RM_PBITS(_raw) ((G_FLD(_raw, 31, 16) << 15) | G_FLD(_raw, 14, 0))
51 struct score_frame_cache
54 struct trad_frame_saved_reg *saved_regs;
58 /* If S+core GCC will generate these instructions in the prologue:
64 then .pdr section is used. */
75 typedef struct frame_extra_info
78 unsigned int pdr[P_SIZE];
90 score_compare_pdr_entries (const void *a, const void *b)
92 CORE_ADDR lhs = bfd_get_32 (the_bfd, (bfd_byte *) a);
93 CORE_ADDR rhs = bfd_get_32 (the_bfd, (bfd_byte *) b);
103 score_analyze_pdr_section (CORE_ADDR startaddr, CORE_ADDR pc,
104 struct frame_info *next_frame,
105 struct score_frame_cache *this_cache)
108 struct obj_section *sec;
109 extra_info_t *fci_ext;
110 CORE_ADDR leaf_ra_stack_addr = -1;
112 gdb_assert (startaddr <= pc);
113 gdb_assert (this_cache != NULL);
115 fci_ext = frame_obstack_zalloc (sizeof (extra_info_t));
116 if ((sec = find_pc_section (pc)) == NULL)
118 error ("Can't find section in file:%s, line:%d!", __FILE__, __LINE__);
122 /* Anylyze .pdr section and get coresponding fields. */
124 static struct obj_priv *priv = NULL;
129 priv = obstack_alloc (&sec->objfile->objfile_obstack,
130 sizeof (struct obj_priv));
131 if ((bfdsec = bfd_get_section_by_name (sec->objfile->obfd, ".pdr")))
133 priv->size = bfd_section_size (sec->objfile->obfd, bfdsec);
134 priv->contents = obstack_alloc (&sec->objfile->objfile_obstack,
136 bfd_get_section_contents (sec->objfile->obfd, bfdsec,
137 priv->contents, 0, priv->size);
138 the_bfd = sec->objfile->obfd;
139 qsort (priv->contents, priv->size / 32, 32,
140 score_compare_pdr_entries);
148 int low = 0, mid, high = priv->size / 32;
154 mid = (low + high) / 2;
155 ptr = priv->contents + mid * 32;
156 pdr_pc = bfd_get_signed_32 (sec->objfile->obfd, ptr);
157 pdr_pc += ANOFFSET (sec->objfile->section_offsets,
158 SECT_OFF_TEXT (sec->objfile));
159 if (pdr_pc == startaddr)
161 if (pdr_pc > startaddr)
170 gdb_assert (bfd_get_32 (sec->objfile->obfd, ptr) == startaddr);
171 #define EXT_PDR(_pi) bfd_get_32(sec->objfile->obfd, ptr+((_pi)<<2))
172 fci_ext->pdr[PI_SYM] = EXT_PDR (PI_SYM);
173 fci_ext->pdr[PI_R_MSK] = EXT_PDR (PI_R_MSK);
174 fci_ext->pdr[PI_R_OFF] = EXT_PDR (PI_R_OFF);
175 fci_ext->pdr[PI_R_LEF] = EXT_PDR (PI_R_LEF);
176 fci_ext->pdr[PI_F_OFF] = EXT_PDR (PI_F_OFF);
177 fci_ext->pdr[PI_F_REG] = EXT_PDR (PI_F_REG);
178 fci_ext->pdr[PI_RAREG] = EXT_PDR (PI_RAREG);
187 score_register_type (struct gdbarch *gdbarch, int regnum)
189 gdb_assert (regnum >= 0 && regnum < SCORE_NUM_REGS);
190 return builtin_type_uint32;
194 score_read_unsigned_register (int regnum)
197 regcache_cooked_read_unsigned (current_regcache, regnum, &val);
204 return score_read_unsigned_register (SCORE_SP_REGNUM);
208 score_unwind_pc (struct gdbarch *gdbarch, struct frame_info *next_frame)
210 return frame_unwind_register_unsigned (next_frame, SCORE_PC_REGNUM);
214 score_register_name (int regnum)
216 const char *score_register_names[] = {
217 "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
218 "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
219 "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
220 "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31",
222 "PSR", "COND", "ECR", "EXCPVEC",
223 "CCR", "EPC", "EMA", "TLBLOCK",
224 "TLBPT", "PEADDR", "TLBRPT", "PEVN",
225 "PECTX", "LIMPFN", "LDMPFN", "PREV",
226 "DREG", "PC", "DSAVE", "COUNTER",
227 "LDCR", "STCR", "CEH", "CEL",
230 gdb_assert (regnum >= 0 && regnum < SCORE_NUM_REGS);
231 return score_register_names[regnum];
235 score_register_sim_regno (int regnum)
237 gdb_assert (regnum >= 0 && regnum < SCORE_NUM_REGS);
242 score_print_insn (bfd_vma memaddr, struct disassemble_info *info)
244 if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
245 return print_insn_big_score (memaddr, info);
247 return print_insn_little_score (memaddr, info);
250 static const gdb_byte *
251 score_breakpoint_from_pc (CORE_ADDR *pcptr, int *lenptr)
253 gdb_byte buf[SCORE_INSTLEN] = { 0 };
257 if ((ret = target_read_memory (*pcptr & ~0x3, buf, SCORE_INSTLEN)) != 0)
259 memory_error (ret, *pcptr);
261 raw = extract_unsigned_integer (buf, SCORE_INSTLEN);
263 if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
265 if (!(raw & 0x80008000))
267 /* 16bits instruction. */
268 static gdb_byte big_breakpoint16[] = { 0x60, 0x02 };
270 *lenptr = sizeof (big_breakpoint16);
271 return big_breakpoint16;
275 /* 32bits instruction. */
276 static gdb_byte big_breakpoint32[] = { 0x80, 0x00, 0x80, 0x06 };
278 *lenptr = sizeof (big_breakpoint32);
279 return big_breakpoint32;
284 if (!(raw & 0x80008000))
286 /* 16bits instruction. */
287 static gdb_byte little_breakpoint16[] = { 0x02, 0x60 };
289 *lenptr = sizeof (little_breakpoint16);
290 return little_breakpoint16;
294 /* 32bits instruction. */
295 static gdb_byte little_breakpoint32[] = { 0x06, 0x80, 0x00, 0x80 };
297 *lenptr = sizeof (little_breakpoint32);
298 return little_breakpoint32;
304 score_frame_align (struct gdbarch *gdbarch, CORE_ADDR addr)
306 return align_down (addr, 16);
310 score_xfer_register (struct regcache *regcache, int regnum, int length,
311 enum bfd_endian endian, gdb_byte *readbuf,
312 const gdb_byte *writebuf, int buf_offset)
315 gdb_assert (regnum >= 0 && regnum < SCORE_NUM_REGS);
320 reg_offset = SCORE_REGSIZE - length;
322 case BFD_ENDIAN_LITTLE:
325 case BFD_ENDIAN_UNKNOWN:
329 internal_error (__FILE__, __LINE__, _("score_xfer_register error!"));
333 regcache_cooked_read_part (regcache, regnum, reg_offset, length,
334 readbuf + buf_offset);
335 if (writebuf != NULL)
336 regcache_cooked_write_part (regcache, regnum, reg_offset, length,
337 writebuf + buf_offset);
340 static enum return_value_convention
341 score_return_value (struct gdbarch *gdbarch, struct type *type,
342 struct regcache *regcache,
343 gdb_byte * readbuf, const gdb_byte * writebuf)
345 if (TYPE_CODE (type) == TYPE_CODE_STRUCT
346 || TYPE_CODE (type) == TYPE_CODE_UNION
347 || TYPE_CODE (type) == TYPE_CODE_ARRAY)
348 return RETURN_VALUE_STRUCT_CONVENTION;
353 for (offset = 0, regnum = SCORE_A0_REGNUM;
354 offset < TYPE_LENGTH (type);
355 offset += SCORE_REGSIZE, regnum++)
357 int xfer = SCORE_REGSIZE;
358 if (offset + xfer > TYPE_LENGTH (type))
359 xfer = TYPE_LENGTH (type) - offset;
360 score_xfer_register (regcache, regnum, xfer, TARGET_BYTE_ORDER,
361 readbuf, writebuf, offset);
363 return RETURN_VALUE_REGISTER_CONVENTION;
367 static struct frame_id
368 score_unwind_dummy_id (struct gdbarch *gdbarch, struct frame_info *next_frame)
370 return frame_id_build (
371 frame_unwind_register_unsigned (next_frame, SCORE_SP_REGNUM),
372 frame_pc_unwind (next_frame));
376 score_type_needs_double_align (struct type *type)
378 enum type_code typecode = TYPE_CODE (type);
380 if (typecode == TYPE_CODE_INT && TYPE_LENGTH (type) == 8)
382 if (typecode == TYPE_CODE_FLT && TYPE_LENGTH (type) == 8)
384 else if (typecode == TYPE_CODE_STRUCT || typecode == TYPE_CODE_UNION)
388 n = TYPE_NFIELDS (type);
389 for (i = 0; i < n; i++)
390 if (score_type_needs_double_align (TYPE_FIELD_TYPE (type, i)))
398 score_push_dummy_call (struct gdbarch *gdbarch, struct value *function,
399 struct regcache *regcache, CORE_ADDR bp_addr,
400 int nargs, struct value **args, CORE_ADDR sp,
401 int struct_return, CORE_ADDR struct_addr)
406 CORE_ADDR stack_offset = 0;
409 /* Step 1, Save RA. */
410 regcache_cooked_write_unsigned (regcache, SCORE_RA_REGNUM, bp_addr);
412 /* Step 2, Make space on the stack for the args. */
413 struct_addr = align_down (struct_addr, 16);
414 sp = align_down (sp, 16);
415 for (argnum = 0; argnum < nargs; argnum++)
416 arglen += align_up (TYPE_LENGTH (value_type (args[argnum])),
418 sp -= align_up (arglen, 16);
420 argreg = SCORE_BEGIN_ARG_REGNUM;
422 /* Step 3, Check if struct return then save the struct address to r4 and
423 increase the stack_offset by 4. */
426 regcache_cooked_write_unsigned (regcache, argreg++, struct_addr);
427 stack_offset += SCORE_REGSIZE;
430 /* Step 4, Load arguments:
431 If arg length is too long (> 4 bytes),
432 then split the arg and save every parts. */
433 for (argnum = 0; argnum < nargs; argnum++)
435 struct value *arg = args[argnum];
436 struct type *arg_type = check_typedef (value_type (arg));
437 arglen = TYPE_LENGTH (arg_type);
438 enum type_code typecode = TYPE_CODE (arg_type);
439 const gdb_byte *val = value_contents (arg);
440 int downward_offset = 0;
442 int odd_sized_struct_p = (arglen > SCORE_REGSIZE
443 && arglen % SCORE_REGSIZE != 0);
444 int arg_last_part_p = 0;
446 /* If a arg should be aligned to 8 bytes (long long or double),
447 the value should be put to even register numbers. */
448 if (score_type_needs_double_align (arg_type))
454 /* If sizeof a block < SCORE_REGSIZE, then Score GCC will chose
455 the default "downward"/"upward" method:
461 char a; char b; char c;
462 } s = {'a', 'b', 'c'};
464 Big endian: s = {X, 'a', 'b', 'c'}
465 Little endian: s = {'a', 'b', 'c', X}
467 Where X is a hole. */
469 if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG
470 && (typecode == TYPE_CODE_STRUCT
471 || typecode == TYPE_CODE_UNION)
472 && argreg > SCORE_LAST_ARG_REGNUM
473 && arglen < SCORE_REGSIZE)
474 downward_offset += (SCORE_REGSIZE - arglen);
478 int partial_len = arglen < SCORE_REGSIZE ? arglen : SCORE_REGSIZE;
479 ULONGEST regval = extract_unsigned_integer (val, partial_len);
481 /* The last part of a arg should shift left when
482 TARGET_BYTE_ORDER is BFD_ENDIAN_BIG. */
483 if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG
484 && arg_last_part_p == 1
485 && (typecode == TYPE_CODE_STRUCT
486 || typecode == TYPE_CODE_UNION))
487 regval <<= ((SCORE_REGSIZE - partial_len) * TARGET_CHAR_BIT);
489 /* Always increase the stack_offset and save args to stack. */
490 addr = sp + stack_offset + downward_offset;
491 write_memory (addr, val, partial_len);
493 if (argreg <= SCORE_LAST_ARG_REGNUM)
495 regcache_cooked_write_unsigned (regcache, argreg++, regval);
496 if (arglen > SCORE_REGSIZE && arglen < SCORE_REGSIZE * 2)
501 arglen -= partial_len;
502 stack_offset += align_up (partial_len, SCORE_REGSIZE);
506 /* Step 5, Save SP. */
507 regcache_cooked_write_unsigned (regcache, SCORE_SP_REGNUM, sp);
513 score_fetch_instruction (CORE_ADDR addr)
515 static inst_t inst = { 0, 0 };
516 char buf[SCORE_INSTLEN];
518 int ret = target_read_memory (addr & ~0x3, buf, SCORE_INSTLEN);
523 memory_error (ret, addr);
526 inst.raw = extract_unsigned_integer (buf, SCORE_INSTLEN);
527 inst.is15 = !(inst.raw & 0x80008000);
528 inst.v = RM_PBITS (inst.raw);
529 big = (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG);
533 if (big ^ ((addr & 0x2) == 2))
534 inst.v = G_FLD (inst.v, 29, 15);
536 inst.v = G_FLD (inst.v, 14, 0);
542 score_skip_prologue (CORE_ADDR pc)
545 int iscan = 32, stack_sub = 0;
548 inst_t *inst = score_fetch_instruction (cpc);
551 if (!inst->is15 && !stack_sub
552 && (G_FLD (inst->v, 29, 25) == 0x1
553 && G_FLD (inst->v, 24, 20) == 0x0))
555 /* addi r0, offset */
556 pc = stack_sub = cpc + SCORE_INSTLEN;
559 && inst->v == RM_PBITS (0x8040bc56))
562 pc = cpc + SCORE_INSTLEN;
566 && inst->v == RM_PBITS (0x0203))
569 pc = cpc + SCORE16_INSTLEN;
573 && ((G_FLD (inst->v, 14, 12) == 3) /* j15 form */
574 || (G_FLD (inst->v, 14, 12) == 4) /* b15 form */
575 || (G_FLD (inst->v, 14, 12) == 0x0
576 && G_FLD (inst->v, 3, 0) == 0x4))) /* br! */
579 && ((G_FLD (inst->v, 29, 25) == 2) /* j32 form */
580 || (G_FLD (inst->v, 29, 25) == 4) /* b32 form */
581 || (G_FLD (inst->v, 29, 25) == 0x0
582 && G_FLD (inst->v, 6, 1) == 0x4))) /* br */
585 cpc += inst->is15 ? SCORE16_INSTLEN : SCORE_INSTLEN;
591 score_in_function_epilogue_p (struct gdbarch *gdbarch, CORE_ADDR cur_pc)
593 inst_t *inst = score_fetch_instruction (cur_pc);
596 return 1; /* mv! r0, r2 */
597 else if (G_FLD (inst->v, 14, 12) == 0x2
598 && G_FLD (inst->v, 3, 0) == 0xa)
600 else if (G_FLD (inst->v, 14, 12) == 0x0
601 && G_FLD (inst->v, 7, 0) == 0x34)
602 return 1; /* br! r3 */
603 else if (G_FLD (inst->v, 29, 15) == 0x2
604 && G_FLD (inst->v, 6, 1) == 0x2b)
605 return 1; /* mv r0, r2 */
606 else if (G_FLD (inst->v, 29, 25) == 0x0
607 && G_FLD (inst->v, 6, 1) == 0x4
608 && G_FLD (inst->v, 19, 15) == 0x3)
609 return 1; /* br r3 */
615 score_analyze_prologue (CORE_ADDR startaddr, CORE_ADDR pc,
616 struct frame_info *next_frame,
617 struct score_frame_cache *this_cache)
620 CORE_ADDR cur_pc = startaddr;
629 sp = frame_unwind_register_unsigned (next_frame, SCORE_SP_REGNUM);
631 for (; cur_pc < pc; cur_pc += inst_len)
633 inst_t *inst = score_fetch_instruction (cur_pc);
636 inst_len = SCORE16_INSTLEN;
638 if (G_FLD (inst->v, 14, 12) == 0x2
639 && G_FLD (inst->v, 3, 0) == 0xe)
644 if (G_FLD (inst->v, 11, 7) == 0x6
648 ra_offset = sp_offset;
651 else if (G_FLD (inst->v, 11, 7) == 0x4
655 fp_offset = sp_offset;
659 else if (G_FLD (inst->v, 14, 12) == 0x2
660 && G_FLD (inst->v, 3, 0) == 0xa)
665 else if (G_FLD (inst->v, 14, 7) == 0xc1
666 && G_FLD (inst->v, 2, 0) == 0x0)
669 sp_offset += (int) pow (2, G_FLD (inst->v, 6, 3));
671 else if (G_FLD (inst->v, 14, 7) == 0xc0
672 && G_FLD (inst->v, 2, 0) == 0x0)
675 sp_offset -= (int) pow (2, G_FLD (inst->v, 6, 3));
680 inst_len = SCORE_INSTLEN;
682 if (G_FLD (inst->v, 29, 15) == 0xc60
683 && G_FLD (inst->v, 2, 0) == 0x4)
685 /* sw r3, [r0, offset]+ */
686 sp_offset += SCORE_INSTLEN;
687 if (ra_offset_p == 0)
689 ra_offset = sp_offset;
693 if (G_FLD (inst->v, 29, 15) == 0xc40
694 && G_FLD (inst->v, 2, 0) == 0x4)
696 /* sw r2, [r0, offset]+ */
697 sp_offset += SCORE_INSTLEN;
698 if (fp_offset_p == 0)
700 fp_offset = sp_offset;
704 else if (G_FLD (inst->v, 29, 15) == 0x1c60
705 && G_FLD (inst->v, 2, 0) == 0x0)
707 /* lw r3, [r0]+, 4 */
708 sp_offset -= SCORE_INSTLEN;
711 else if (G_FLD (inst->v, 29, 15) == 0x1c40
712 && G_FLD (inst->v, 2, 0) == 0x0)
714 /* lw r2, [r0]+, 4 */
715 sp_offset -= SCORE_INSTLEN;
719 else if (G_FLD (inst->v, 29, 17) == 0x100
720 && G_FLD (inst->v, 0, 0) == 0x0)
722 /* addi r0, -offset */
723 sp_offset += 65536 - G_FLD (inst->v, 16, 1);
725 else if (G_FLD (inst->v, 29, 17) == 0x110
726 && G_FLD (inst->v, 0, 0) == 0x0)
728 /* addi r2, offset */
731 unsigned int save_v = inst->v;
733 score_fetch_instruction (cur_pc + SCORE_INSTLEN);
734 if (inst2->v == 0x23)
736 sp_offset -= G_FLD (save_v, 16, 1);
743 if (ra_offset_p == 1)
745 if (this_cache->saved_regs[SCORE_PC_REGNUM].addr == -1)
746 this_cache->saved_regs[SCORE_PC_REGNUM].addr =
747 sp + sp_offset - ra_offset;
751 this_cache->saved_regs[SCORE_PC_REGNUM] =
752 this_cache->saved_regs[SCORE_RA_REGNUM];
756 if (fp_offset_p == 1)
758 if (this_cache->saved_regs[SCORE_FP_REGNUM].addr == -1)
759 this_cache->saved_regs[SCORE_FP_REGNUM].addr =
760 sp + sp_offset - fp_offset;
765 frame_unwind_register_unsigned (next_frame, SCORE_SP_REGNUM) + sp_offset;
768 static struct score_frame_cache *
769 score_make_prologue_cache (struct frame_info *next_frame, void **this_cache)
771 struct score_frame_cache *cache;
773 if ((*this_cache) != NULL)
774 return (*this_cache);
776 cache = FRAME_OBSTACK_ZALLOC (struct score_frame_cache);
777 (*this_cache) = cache;
778 cache->saved_regs = trad_frame_alloc_saved_regs (next_frame);
780 /* Analyze the prologue. */
782 const CORE_ADDR pc = frame_pc_unwind (next_frame);
783 CORE_ADDR start_addr;
785 find_pc_partial_function (pc, NULL, &start_addr, NULL);
788 score_analyze_prologue (start_addr, pc, next_frame, *this_cache);
792 trad_frame_set_value (cache->saved_regs, SCORE_SP_REGNUM, cache->base);
794 return (*this_cache);
798 score_prologue_this_id (struct frame_info *next_frame, void **this_cache,
799 struct frame_id *this_id)
801 struct score_frame_cache *info = score_make_prologue_cache (next_frame,
803 (*this_id) = frame_id_build (info->base, frame_func_unwind (next_frame));
807 score_prologue_prev_register (struct frame_info *next_frame,
809 int regnum, int *optimizedp,
810 enum lval_type *lvalp, CORE_ADDR * addrp,
811 int *realnump, gdb_byte * valuep)
813 struct score_frame_cache *info = score_make_prologue_cache (next_frame,
815 trad_frame_get_prev_register (next_frame, info->saved_regs, regnum,
816 optimizedp, lvalp, addrp, realnump, valuep);
819 static const struct frame_unwind score_prologue_unwind =
822 score_prologue_this_id,
823 score_prologue_prev_register
826 static const struct frame_unwind *
827 score_prologue_sniffer (struct frame_info *next_frame)
829 return &score_prologue_unwind;
833 score_prologue_frame_base_address (struct frame_info *next_frame,
836 struct score_frame_cache *info =
837 score_make_prologue_cache (next_frame, this_cache);
841 static const struct frame_base score_prologue_frame_base =
843 &score_prologue_unwind,
844 score_prologue_frame_base_address,
845 score_prologue_frame_base_address,
846 score_prologue_frame_base_address,
849 static const struct frame_base *
850 score_prologue_frame_base_sniffer (struct frame_info *next_frame)
852 return &score_prologue_frame_base;
855 static struct gdbarch *
856 score_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
858 struct gdbarch *gdbarch;
860 arches = gdbarch_list_lookup_by_info (arches, &info);
863 return (arches->gdbarch);
865 gdbarch = gdbarch_alloc (&info, 0);
867 set_gdbarch_short_bit (gdbarch, 16);
868 set_gdbarch_int_bit (gdbarch, 32);
869 set_gdbarch_float_bit (gdbarch, 32);
870 set_gdbarch_double_bit (gdbarch, 64);
871 set_gdbarch_long_double_bit (gdbarch, 64);
872 set_gdbarch_register_sim_regno (gdbarch, score_register_sim_regno);
873 set_gdbarch_pc_regnum (gdbarch, SCORE_PC_REGNUM);
874 set_gdbarch_sp_regnum (gdbarch, SCORE_SP_REGNUM);
875 set_gdbarch_num_regs (gdbarch, SCORE_NUM_REGS);
876 set_gdbarch_register_name (gdbarch, score_register_name);
877 set_gdbarch_breakpoint_from_pc (gdbarch, score_breakpoint_from_pc);
878 set_gdbarch_register_type (gdbarch, score_register_type);
879 set_gdbarch_frame_align (gdbarch, score_frame_align);
880 set_gdbarch_inner_than (gdbarch, core_addr_lessthan);
881 set_gdbarch_read_sp (gdbarch, score_read_sp);
882 set_gdbarch_unwind_pc (gdbarch, score_unwind_pc);
883 set_gdbarch_print_insn (gdbarch, score_print_insn);
884 set_gdbarch_skip_prologue (gdbarch, score_skip_prologue);
885 set_gdbarch_in_function_epilogue_p (gdbarch, score_in_function_epilogue_p);
886 set_gdbarch_call_dummy_location (gdbarch, AT_ENTRY_POINT);
887 set_gdbarch_return_value (gdbarch, score_return_value);
888 set_gdbarch_unwind_dummy_id (gdbarch, score_unwind_dummy_id);
889 set_gdbarch_push_dummy_call (gdbarch, score_push_dummy_call);
891 frame_unwind_append_sniffer (gdbarch, dwarf2_frame_sniffer);
892 frame_base_append_sniffer (gdbarch, dwarf2_frame_base_sniffer);
893 frame_unwind_append_sniffer (gdbarch, score_prologue_sniffer);
894 frame_base_append_sniffer (gdbarch, score_prologue_frame_base_sniffer);
899 extern initialize_file_ftype _initialize_score_tdep;
902 _initialize_score_tdep (void)
904 gdbarch_register (bfd_arch_score, score_gdbarch_init, NULL);