+++ /dev/null
-/* Target-dependent code for the S+core architecture, for GDB,
- the GNU Debugger.
-
- Copyright (C) 2006-2022 Free Software Foundation, Inc.
-
- Contributed by Qinwei (qinwei@sunnorth.com.cn)
- Contributed by Ching-Peng Lin (cplin@sunplus.com)
-
- This file is part of GDB.
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>. */
-
-#include "defs.h"
-#include "inferior.h"
-#include "symtab.h"
-#include "objfiles.h"
-#include "gdbcore.h"
-#include "target.h"
-#include "arch-utils.h"
-#include "regcache.h"
-#include "regset.h"
-#include "dis-asm.h"
-#include "frame-unwind.h"
-#include "frame-base.h"
-#include "trad-frame.h"
-#include "dwarf2/frame.h"
-#include "score-tdep.h"
-
-#define G_FLD(_i,_ms,_ls) \
- ((unsigned)((_i) << (31 - (_ms))) >> (31 - (_ms) + (_ls)))
-
-typedef struct{
- unsigned long long v;
- unsigned long long raw;
- unsigned int len;
-}inst_t;
-
-struct score_frame_cache
-{
- CORE_ADDR base;
- CORE_ADDR fp;
- trad_frame_saved_reg *saved_regs;
-};
-
-static int target_mach = bfd_mach_score7;
-
-static struct type *
-score_register_type (struct gdbarch *gdbarch, int regnum)
-{
- gdb_assert (regnum >= 0
- && regnum < ((target_mach == bfd_mach_score7)
- ? SCORE7_NUM_REGS : SCORE3_NUM_REGS));
- return builtin_type (gdbarch)->builtin_uint32;
-}
-
-static const char *
-score7_register_name (struct gdbarch *gdbarch, int regnum)
-{
- const char *score_register_names[] = {
- "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
- "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
- "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
- "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31",
-
- "PSR", "COND", "ECR", "EXCPVEC", "CCR",
- "EPC", "EMA", "TLBLOCK", "TLBPT", "PEADDR",
- "TLBRPT", "PEVN", "PECTX", "LIMPFN", "LDMPFN",
- "PREV", "DREG", "PC", "DSAVE", "COUNTER",
- "LDCR", "STCR", "CEH", "CEL",
- };
-
- gdb_assert (regnum >= 0 && regnum < SCORE7_NUM_REGS);
- return score_register_names[regnum];
-}
-
-static const char *
-score3_register_name (struct gdbarch *gdbarch, int regnum)
-{
- const char *score_register_names[] = {
- "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
- "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
- "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
- "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31",
-
- "PSR", "COND", "ECR", "EXCPVEC", "CCR",
- "EPC", "EMA", "PREV", "DREG", "DSAVE",
- "COUNTER", "LDCR", "STCR", "CEH", "CEL",
- "", "", "PC",
- };
-
- gdb_assert (regnum >= 0 && regnum < SCORE3_NUM_REGS);
- return score_register_names[regnum];
-}
-
-#if WITH_SIM
-static int
-score_register_sim_regno (struct gdbarch *gdbarch, int regnum)
-{
- gdb_assert (regnum >= 0
- && regnum < ((target_mach == bfd_mach_score7)
- ? SCORE7_NUM_REGS : SCORE3_NUM_REGS));
- return regnum;
-}
-#endif
-
-static inst_t *
-score7_fetch_inst (struct gdbarch *gdbarch, CORE_ADDR addr, gdb_byte *memblock)
-{
- enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
- static inst_t inst = { 0, 0, 0 };
- gdb_byte buf[SCORE_INSTLEN] = { 0 };
- int big;
- int ret;
-
- if (target_has_execution () && memblock != NULL)
- {
- /* Fetch instruction from local MEMBLOCK. */
- memcpy (buf, memblock, SCORE_INSTLEN);
- }
- else
- {
- /* Fetch instruction from target. */
- ret = target_read_memory (addr & ~0x3, buf, SCORE_INSTLEN);
- if (ret)
- {
- error (_("Error: target_read_memory in file:%s, line:%d!"),
- __FILE__, __LINE__);
- return 0;
- }
- }
-
- inst.raw = extract_unsigned_integer (buf, SCORE_INSTLEN, byte_order);
- inst.len = (inst.raw & 0x80008000) ? 4 : 2;
- inst.v = ((inst.raw >> 16 & 0x7FFF) << 15) | (inst.raw & 0x7FFF);
- big = (byte_order == BFD_ENDIAN_BIG);
- if (inst.len == 2)
- {
- if (big ^ ((addr & 0x2) == 2))
- inst.v = G_FLD (inst.v, 29, 15);
- else
- inst.v = G_FLD (inst.v, 14, 0);
- }
- return &inst;
-}
-
-static inst_t *
-score3_adjust_pc_and_fetch_inst (CORE_ADDR *pcptr, int *lenptr,
- enum bfd_endian byte_order)
-{
- static inst_t inst = { 0, 0, 0 };
-
- struct breakplace
- {
- int break_offset;
- int inst_len;
- };
- /* raw table 1 (column 2, 3, 4)
- * 0 1 0 * # 2
- * 0 1 1 0 # 3
- 0 1 1 0 * # 6
- table 2 (column 1, 2, 3)
- * 0 0 * * # 0, 4
- 0 1 0 * * # 2
- 1 1 0 * * # 6
- */
-
- static const struct breakplace bk_table[16] =
- {
- /* table 1 */
- {0, 0},
- {0, 0},
- {0, 4},
- {0, 6},
- {0, 0},
- {0, 0},
- {-2, 6},
- {0, 0},
- /* table 2 */
- {0, 2},
- {0, 0},
- {-2, 4},
- {0, 0},
- {0, 2},
- {0, 0},
- {-4, 6},
- {0, 0}
- };
-
-#define EXTRACT_LEN 2
- CORE_ADDR adjust_pc = *pcptr & ~0x1;
- gdb_byte buf[5][EXTRACT_LEN] =
- {
- {'\0', '\0'},
- {'\0', '\0'},
- {'\0', '\0'},
- {'\0', '\0'},
- {'\0', '\0'}
- };
- int ret;
- unsigned int raw;
- unsigned int cbits = 0;
- int bk_index;
- int i, count;
-
- inst.v = 0;
- inst.raw = 0;
- inst.len = 0;
-
- adjust_pc -= 4;
- for (i = 0; i < 5; i++)
- {
- ret = target_read_memory (adjust_pc + 2 * i, buf[i], EXTRACT_LEN);
- if (ret != 0)
- {
- buf[i][0] = '\0';
- buf[i][1] = '\0';
- if (i == 2)
- error (_("Error: target_read_memory in file:%s, line:%d!"),
- __FILE__, __LINE__);
- }
-
- raw = extract_unsigned_integer (buf[i], EXTRACT_LEN, byte_order);
- cbits = (cbits << 1) | (raw >> 15);
- }
- adjust_pc += 4;
-
- if (cbits & 0x4)
- {
- /* table 1 */
- cbits = (cbits >> 1) & 0x7;
- bk_index = cbits;
- }
- else
- {
- /* table 2 */
- cbits = (cbits >> 2) & 0x7;
- bk_index = cbits + 8;
- }
-
- gdb_assert (!((bk_table[bk_index].break_offset == 0)
- && (bk_table[bk_index].inst_len == 0)));
-
- inst.len = bk_table[bk_index].inst_len;
-
- i = (bk_table[bk_index].break_offset + 4) / 2;
- count = inst.len / 2;
- for (; count > 0; i++, count--)
- {
- inst.raw = (inst.raw << 16)
- | extract_unsigned_integer (buf[i], EXTRACT_LEN, byte_order);
- }
-
- switch (inst.len)
- {
- case 2:
- inst.v = inst.raw & 0x7FFF;
- break;
- case 4:
- inst.v = ((inst.raw >> 16 & 0x7FFF) << 15) | (inst.raw & 0x7FFF);
- break;
- case 6:
- inst.v = ((inst.raw >> 32 & 0x7FFF) << 30)
- | ((inst.raw >> 16 & 0x7FFF) << 15) | (inst.raw & 0x7FFF);
- break;
- }
-
- if (pcptr)
- *pcptr = adjust_pc + bk_table[bk_index].break_offset;
- if (lenptr)
- *lenptr = bk_table[bk_index].inst_len;
-
-#undef EXTRACT_LEN
-
- return &inst;
-}
-
-/* Implement the breakpoint_kind_from_pc gdbarch method. */
-
-static int
-score7_breakpoint_kind_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr)
-{
- int ret;
- unsigned int raw;
- enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
- gdb_byte buf[SCORE_INSTLEN] = { 0 };
-
- if ((ret = target_read_memory (*pcptr & ~0x3, buf, SCORE_INSTLEN)) != 0)
- {
- error (_("Error: target_read_memory in file:%s, line:%d!"),
- __FILE__, __LINE__);
- }
- raw = extract_unsigned_integer (buf, SCORE_INSTLEN, byte_order);
-
- if (!(raw & 0x80008000))
- {
- /* 16bits instruction. */
- *pcptr &= ~0x1;
- return 2;
- }
- else
- {
- /* 32bits instruction. */
- *pcptr &= ~0x3;
- return 4;
- }
-}
-
-/* Implement the sw_breakpoint_from_kind gdbarch method. */
-
-static const gdb_byte *
-score7_sw_breakpoint_from_kind (struct gdbarch *gdbarch, int kind, int *size)
-{
- enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
-
- *size = kind;
-
- if (kind == 4)
- {
- static gdb_byte big_breakpoint32[] = { 0x80, 0x00, 0x80, 0x06 };
- static gdb_byte little_breakpoint32[] = { 0x06, 0x80, 0x00, 0x80 };
-
- if (byte_order == BFD_ENDIAN_BIG)
- return big_breakpoint32;
- else
- return little_breakpoint32;
- }
- else
- {
- static gdb_byte big_breakpoint16[] = { 0x60, 0x02 };
- static gdb_byte little_breakpoint16[] = { 0x02, 0x60 };
-
- if (byte_order == BFD_ENDIAN_BIG)
- return big_breakpoint16;
- else
- return little_breakpoint16;
- }
-}
-
-/* Implement the breakpoint_kind_from_pc gdbarch method. */
-
-static int
-score3_breakpoint_kind_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr)
-{
- enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
- int len;
-
- score3_adjust_pc_and_fetch_inst (pcptr, &len, byte_order);
-
- return len;
-}
-
-/* Implement the sw_breakpoint_from_kind gdbarch method. */
-
-static const gdb_byte *
-score3_sw_breakpoint_from_kind (struct gdbarch *gdbarch, int kind, int *size)
-{
- int index = 0;
- enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
- static gdb_byte score_break_insns[6][6] = {
- /* The following three instructions are big endian. */
- { 0x00, 0x20 },
- { 0x80, 0x00, 0x00, 0x06 },
- { 0x80, 0x00, 0x80, 0x00, 0x00, 0x00 },
- /* The following three instructions are little endian. */
- { 0x20, 0x00 },
- { 0x00, 0x80, 0x06, 0x00 },
- { 0x00, 0x80, 0x00, 0x80, 0x00, 0x00 }};
-
- *size = kind;
-
- index = ((byte_order == BFD_ENDIAN_BIG) ? 0 : 3) + (kind / 2 - 1);
- return score_break_insns[index];
-}
-
-static CORE_ADDR
-score_adjust_breakpoint_address (struct gdbarch *gdbarch, CORE_ADDR bpaddr)
-{
- CORE_ADDR adjust_pc = bpaddr;
-
- if (target_mach == bfd_mach_score3)
- score3_adjust_pc_and_fetch_inst (&adjust_pc, NULL,
- gdbarch_byte_order (gdbarch));
- else
- adjust_pc = align_down (adjust_pc, 2);
-
- return adjust_pc;
-}
-
-static CORE_ADDR
-score_frame_align (struct gdbarch *gdbarch, CORE_ADDR addr)
-{
- return align_down (addr, 16);
-}
-
-static void
-score_xfer_register (struct regcache *regcache, int regnum, int length,
- enum bfd_endian endian, gdb_byte *readbuf,
- const gdb_byte *writebuf, int buf_offset)
-{
- int reg_offset = 0;
- gdb_assert (regnum >= 0
- && regnum < ((target_mach == bfd_mach_score7)
- ? SCORE7_NUM_REGS : SCORE3_NUM_REGS));
-
- switch (endian)
- {
- case BFD_ENDIAN_BIG:
- reg_offset = SCORE_REGSIZE - length;
- break;
- case BFD_ENDIAN_LITTLE:
- reg_offset = 0;
- break;
- case BFD_ENDIAN_UNKNOWN:
- reg_offset = 0;
- break;
- default:
- error (_("Error: score_xfer_register in file:%s, line:%d!"),
- __FILE__, __LINE__);
- }
-
- if (readbuf != NULL)
- regcache->cooked_read_part (regnum, reg_offset, length,
- readbuf + buf_offset);
- if (writebuf != NULL)
- regcache->cooked_write_part (regnum, reg_offset, length,
- writebuf + buf_offset);
-}
-
-static enum return_value_convention
-score_return_value (struct gdbarch *gdbarch, struct value *function,
- struct type *type, struct regcache *regcache,
- gdb_byte * readbuf, const gdb_byte * writebuf)
-{
- if (type->code () == TYPE_CODE_STRUCT
- || type->code () == TYPE_CODE_UNION
- || type->code () == TYPE_CODE_ARRAY)
- return RETURN_VALUE_STRUCT_CONVENTION;
- else
- {
- int offset;
- int regnum;
- for (offset = 0, regnum = SCORE_A0_REGNUM;
- offset < TYPE_LENGTH (type);
- offset += SCORE_REGSIZE, regnum++)
- {
- int xfer = SCORE_REGSIZE;
-
- if (offset + xfer > TYPE_LENGTH (type))
- xfer = TYPE_LENGTH (type) - offset;
- score_xfer_register (regcache, regnum, xfer,
- gdbarch_byte_order(gdbarch),
- readbuf, writebuf, offset);
- }
- return RETURN_VALUE_REGISTER_CONVENTION;
- }
-}
-
-static int
-score_type_needs_double_align (struct type *type)
-{
- enum type_code typecode = type->code ();
-
- if ((typecode == TYPE_CODE_INT && TYPE_LENGTH (type) == 8)
- || (typecode == TYPE_CODE_FLT && TYPE_LENGTH (type) == 8))
- return 1;
- else if (typecode == TYPE_CODE_STRUCT || typecode == TYPE_CODE_UNION)
- {
- int i, n;
-
- n = type->num_fields ();
- for (i = 0; i < n; i++)
- if (score_type_needs_double_align (type->field (i).type ()))
- return 1;
- return 0;
- }
- return 0;
-}
-
-static CORE_ADDR
-score_push_dummy_call (struct gdbarch *gdbarch, struct value *function,
- struct regcache *regcache, CORE_ADDR bp_addr,
- int nargs, struct value **args, CORE_ADDR sp,
- function_call_return_method return_method,
- CORE_ADDR struct_addr)
-{
- enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
- int argnum;
- int argreg;
- int arglen = 0;
- CORE_ADDR stack_offset = 0;
- CORE_ADDR addr = 0;
-
- /* Step 1, Save RA. */
- regcache_cooked_write_unsigned (regcache, SCORE_RA_REGNUM, bp_addr);
-
- /* Step 2, Make space on the stack for the args. */
- struct_addr = align_down (struct_addr, 16);
- sp = align_down (sp, 16);
- for (argnum = 0; argnum < nargs; argnum++)
- arglen += align_up (TYPE_LENGTH (value_type (args[argnum])),
- SCORE_REGSIZE);
- sp -= align_up (arglen, 16);
-
- argreg = SCORE_BEGIN_ARG_REGNUM;
-
- /* Step 3, Check if struct return then save the struct address to
- r4 and increase the stack_offset by 4. */
- if (return_method == return_method_struct)
- {
- regcache_cooked_write_unsigned (regcache, argreg++, struct_addr);
- stack_offset += SCORE_REGSIZE;
- }
-
- /* Step 4, Load arguments:
- If arg length is too long (> 4 bytes), then split the arg and
- save every parts. */
- for (argnum = 0; argnum < nargs; argnum++)
- {
- struct value *arg = args[argnum];
- struct type *arg_type = check_typedef (value_type (arg));
- enum type_code typecode = arg_type->code ();
- const gdb_byte *val = value_contents (arg).data ();
- int downward_offset = 0;
- int arg_last_part_p = 0;
-
- arglen = TYPE_LENGTH (arg_type);
-
- /* If a arg should be aligned to 8 bytes (long long or double),
- the value should be put to even register numbers. */
- if (score_type_needs_double_align (arg_type))
- {
- if (argreg & 1)
- argreg++;
- }
-
- /* If sizeof a block < SCORE_REGSIZE, then Score GCC will chose
- the default "downward"/"upward" method:
-
- Example:
-
- struct struc
- {
- char a; char b; char c;
- } s = {'a', 'b', 'c'};
-
- Big endian: s = {X, 'a', 'b', 'c'}
- Little endian: s = {'a', 'b', 'c', X}
-
- Where X is a hole. */
-
- if (gdbarch_byte_order(gdbarch) == BFD_ENDIAN_BIG
- && (typecode == TYPE_CODE_STRUCT
- || typecode == TYPE_CODE_UNION)
- && argreg > SCORE_LAST_ARG_REGNUM
- && arglen < SCORE_REGSIZE)
- downward_offset += (SCORE_REGSIZE - arglen);
-
- while (arglen > 0)
- {
- int partial_len = arglen < SCORE_REGSIZE ? arglen : SCORE_REGSIZE;
- ULONGEST regval = extract_unsigned_integer (val, partial_len,
- byte_order);
-
- /* The last part of a arg should shift left when
- gdbarch_byte_order is BFD_ENDIAN_BIG. */
- if (byte_order == BFD_ENDIAN_BIG
- && arg_last_part_p == 1
- && (typecode == TYPE_CODE_STRUCT
- || typecode == TYPE_CODE_UNION))
- regval <<= ((SCORE_REGSIZE - partial_len) * TARGET_CHAR_BIT);
-
- /* Always increase the stack_offset and save args to stack. */
- addr = sp + stack_offset + downward_offset;
- write_memory (addr, val, partial_len);
-
- if (argreg <= SCORE_LAST_ARG_REGNUM)
- {
- regcache_cooked_write_unsigned (regcache, argreg++, regval);
- if (arglen > SCORE_REGSIZE && arglen < SCORE_REGSIZE * 2)
- arg_last_part_p = 1;
- }
-
- val += partial_len;
- arglen -= partial_len;
- stack_offset += align_up (partial_len, SCORE_REGSIZE);
- }
- }
-
- /* Step 5, Save SP. */
- regcache_cooked_write_unsigned (regcache, SCORE_SP_REGNUM, sp);
-
- return sp;
-}
-
-static CORE_ADDR
-score7_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR pc)
-{
- CORE_ADDR cpc = pc;
- int iscan = 32, stack_sub = 0;
- while (iscan-- > 0)
- {
- inst_t *inst = score7_fetch_inst (gdbarch, cpc, NULL);
- if (!inst)
- break;
- if ((inst->len == 4) && !stack_sub
- && (G_FLD (inst->v, 29, 25) == 0x1
- && G_FLD (inst->v, 24, 20) == 0x0))
- {
- /* addi r0, offset */
- stack_sub = cpc + SCORE_INSTLEN;
- pc = cpc + SCORE_INSTLEN;
- }
- else if ((inst->len == 4)
- && (G_FLD (inst->v, 29, 25) == 0x0)
- && (G_FLD (inst->v, 24, 20) == 0x2)
- && (G_FLD (inst->v, 19, 15) == 0x0)
- && (G_FLD (inst->v, 14, 10) == 0xF)
- && (G_FLD (inst->v, 9, 0) == 0x56))
- {
- /* mv r2, r0 */
- pc = cpc + SCORE_INSTLEN;
- break;
- }
- else if ((inst->len == 2)
- && (G_FLD (inst->v, 14, 12) == 0x0)
- && (G_FLD (inst->v, 11, 8) == 0x2)
- && (G_FLD (inst->v, 7, 4) == 0x0)
- && (G_FLD (inst->v, 3, 0) == 0x3))
- {
- /* mv! r2, r0 */
- pc = cpc + SCORE16_INSTLEN;
- break;
- }
- else if ((inst->len == 2)
- && ((G_FLD (inst->v, 14, 12) == 3) /* j15 form */
- || (G_FLD (inst->v, 14, 12) == 4) /* b15 form */
- || (G_FLD (inst->v, 14, 12) == 0x0
- && G_FLD (inst->v, 3, 0) == 0x4))) /* br! */
- break;
- else if ((inst->len == 4)
- && ((G_FLD (inst->v, 29, 25) == 2) /* j32 form */
- || (G_FLD (inst->v, 29, 25) == 4) /* b32 form */
- || (G_FLD (inst->v, 29, 25) == 0x0
- && G_FLD (inst->v, 6, 1) == 0x4))) /* br */
- break;
-
- cpc += (inst->len == 2) ? SCORE16_INSTLEN : SCORE_INSTLEN;
- }
- return pc;
-}
-
-static CORE_ADDR
-score3_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR pc)
-{
- CORE_ADDR cpc = pc;
- int iscan = 32, stack_sub = 0;
- while (iscan-- > 0)
- {
- inst_t *inst
- = score3_adjust_pc_and_fetch_inst (&cpc, NULL,
- gdbarch_byte_order (gdbarch));
-
- if (!inst)
- break;
- if (inst->len == 4 && !stack_sub
- && (G_FLD (inst->v, 29, 25) == 0x1)
- && (G_FLD (inst->v, 19, 17) == 0x0)
- && (G_FLD (inst->v, 24, 20) == 0x0))
- {
- /* addi r0, offset */
- stack_sub = cpc + inst->len;
- pc = cpc + inst->len;
- }
- else if (inst->len == 4
- && (G_FLD (inst->v, 29, 25) == 0x0)
- && (G_FLD (inst->v, 24, 20) == 0x2)
- && (G_FLD (inst->v, 19, 15) == 0x0)
- && (G_FLD (inst->v, 14, 10) == 0xF)
- && (G_FLD (inst->v, 9, 0) == 0x56))
- {
- /* mv r2, r0 */
- pc = cpc + inst->len;
- break;
- }
- else if ((inst->len == 2)
- && (G_FLD (inst->v, 14, 10) == 0x10)
- && (G_FLD (inst->v, 9, 5) == 0x2)
- && (G_FLD (inst->v, 4, 0) == 0x0))
- {
- /* mv! r2, r0 */
- pc = cpc + inst->len;
- break;
- }
- else if (inst->len == 2
- && ((G_FLD (inst->v, 14, 12) == 3) /* b15 form */
- || (G_FLD (inst->v, 14, 12) == 0x0
- && G_FLD (inst->v, 11, 5) == 0x4))) /* br! */
- break;
- else if (inst->len == 4
- && ((G_FLD (inst->v, 29, 25) == 2) /* j32 form */
- || (G_FLD (inst->v, 29, 25) == 4))) /* b32 form */
- break;
-
- cpc += inst->len;
- }
- return pc;
-}
-
-/* Implement the stack_frame_destroyed_p gdbarch method. */
-
-static int
-score7_stack_frame_destroyed_p (struct gdbarch *gdbarch, CORE_ADDR cur_pc)
-{
- inst_t *inst = score7_fetch_inst (gdbarch, cur_pc, NULL);
-
- if (inst->v == 0x23)
- return 1; /* mv! r0, r2 */
- else if (G_FLD (inst->v, 14, 12) == 0x2
- && G_FLD (inst->v, 3, 0) == 0xa)
- return 1; /* pop! */
- else if (G_FLD (inst->v, 14, 12) == 0x0
- && G_FLD (inst->v, 7, 0) == 0x34)
- return 1; /* br! r3 */
- else if (G_FLD (inst->v, 29, 15) == 0x2
- && G_FLD (inst->v, 6, 1) == 0x2b)
- return 1; /* mv r0, r2 */
- else if (G_FLD (inst->v, 29, 25) == 0x0
- && G_FLD (inst->v, 6, 1) == 0x4
- && G_FLD (inst->v, 19, 15) == 0x3)
- return 1; /* br r3 */
- else
- return 0;
-}
-
-/* Implement the stack_frame_destroyed_p gdbarch method. */
-
-static int
-score3_stack_frame_destroyed_p (struct gdbarch *gdbarch, CORE_ADDR cur_pc)
-{
- CORE_ADDR pc = cur_pc;
- inst_t *inst
- = score3_adjust_pc_and_fetch_inst (&pc, NULL,
- gdbarch_byte_order (gdbarch));
-
- if (inst->len == 2
- && (G_FLD (inst->v, 14, 10) == 0x10)
- && (G_FLD (inst->v, 9, 5) == 0x0)
- && (G_FLD (inst->v, 4, 0) == 0x2))
- return 1; /* mv! r0, r2 */
- else if (inst->len == 4
- && (G_FLD (inst->v, 29, 25) == 0x0)
- && (G_FLD (inst->v, 24, 20) == 0x2)
- && (G_FLD (inst->v, 19, 15) == 0x0)
- && (G_FLD (inst->v, 14, 10) == 0xF)
- && (G_FLD (inst->v, 9, 0) == 0x56))
- return 1; /* mv r0, r2 */
- else if (inst->len == 2
- && (G_FLD (inst->v, 14, 12) == 0x0)
- && (G_FLD (inst->v, 11, 5) == 0x2))
- return 1; /* pop! */
- else if (inst->len == 2
- && (G_FLD (inst->v, 14, 12) == 0x0)
- && (G_FLD (inst->v, 11, 7) == 0x0)
- && (G_FLD (inst->v, 6, 5) == 0x2))
- return 1; /* rpop! */
- else if (inst->len == 2
- && (G_FLD (inst->v, 14, 12) == 0x0)
- && (G_FLD (inst->v, 11, 5) == 0x4)
- && (G_FLD (inst->v, 4, 0) == 0x3))
- return 1; /* br! r3 */
- else if (inst->len == 4
- && (G_FLD (inst->v, 29, 25) == 0x0)
- && (G_FLD (inst->v, 24, 20) == 0x0)
- && (G_FLD (inst->v, 19, 15) == 0x3)
- && (G_FLD (inst->v, 14, 10) == 0xF)
- && (G_FLD (inst->v, 9, 0) == 0x8))
- return 1; /* br r3 */
- else
- return 0;
-}
-
-static gdb_byte *
-score7_malloc_and_get_memblock (CORE_ADDR addr, CORE_ADDR size)
-{
- int ret;
- gdb_byte *memblock = NULL;
-
- if (size == 0)
- return NULL;
-
- memblock = (gdb_byte *) xmalloc (size);
- memset (memblock, 0, size);
- ret = target_read_memory (addr & ~0x3, memblock, size);
- if (ret)
- {
- error (_("Error: target_read_memory in file:%s, line:%d!"),
- __FILE__, __LINE__);
- return NULL;
- }
- return memblock;
-}
-
-static void
-score7_free_memblock (gdb_byte *memblock)
-{
- xfree (memblock);
-}
-
-static void
-score7_adjust_memblock_ptr (gdb_byte **memblock, CORE_ADDR prev_pc,
- CORE_ADDR cur_pc)
-{
- if (prev_pc == -1)
- {
- /* First time call this function, do nothing. */
- }
- else if (cur_pc - prev_pc == 2 && (cur_pc & 0x3) == 0)
- {
- /* First 16-bit instruction, then 32-bit instruction. */
- *memblock += SCORE_INSTLEN;
- }
- else if (cur_pc - prev_pc == 4)
- {
- /* Is 32-bit instruction, increase MEMBLOCK by 4. */
- *memblock += SCORE_INSTLEN;
- }
-}
-
-static void
-score7_analyze_prologue (CORE_ADDR startaddr, CORE_ADDR pc,
- struct frame_info *this_frame,
- struct score_frame_cache *this_cache)
-{
- struct gdbarch *gdbarch = get_frame_arch (this_frame);
- CORE_ADDR sp;
- CORE_ADDR fp;
- CORE_ADDR cur_pc = startaddr;
-
- int sp_offset = 0;
- int ra_offset = 0;
- int fp_offset = 0;
- int ra_offset_p = 0;
- int fp_offset_p = 0;
- int inst_len = 0;
-
- gdb_byte *memblock = NULL;
- gdb_byte *memblock_ptr = NULL;
- CORE_ADDR prev_pc = -1;
-
- /* Allocate MEMBLOCK if PC - STARTADDR > 0. */
- memblock_ptr = memblock =
- score7_malloc_and_get_memblock (startaddr, pc - startaddr);
-
- sp = get_frame_register_unsigned (this_frame, SCORE_SP_REGNUM);
- fp = get_frame_register_unsigned (this_frame, SCORE_FP_REGNUM);
-
- for (; cur_pc < pc; prev_pc = cur_pc, cur_pc += inst_len)
- {
- inst_t *inst = NULL;
- if (memblock != NULL)
- {
- /* Reading memory block from target successfully and got all
- the instructions(from STARTADDR to PC) needed. */
- score7_adjust_memblock_ptr (&memblock, prev_pc, cur_pc);
- inst = score7_fetch_inst (gdbarch, cur_pc, memblock);
- }
- else
- {
- /* Otherwise, we fetch 4 bytes from target, and GDB also
- work correctly. */
- inst = score7_fetch_inst (gdbarch, cur_pc, NULL);
- }
-
- /* FIXME: make a full-power prologue analyzer. */
- if (inst->len == 2)
- {
- inst_len = SCORE16_INSTLEN;
-
- if (G_FLD (inst->v, 14, 12) == 0x2
- && G_FLD (inst->v, 3, 0) == 0xe)
- {
- /* push! */
- sp_offset += 4;
-
- if (G_FLD (inst->v, 11, 7) == 0x6
- && ra_offset_p == 0)
- {
- /* push! r3, [r0] */
- ra_offset = sp_offset;
- ra_offset_p = 1;
- }
- else if (G_FLD (inst->v, 11, 7) == 0x4
- && fp_offset_p == 0)
- {
- /* push! r2, [r0] */
- fp_offset = sp_offset;
- fp_offset_p = 1;
- }
- }
- else if (G_FLD (inst->v, 14, 12) == 0x2
- && G_FLD (inst->v, 3, 0) == 0xa)
- {
- /* pop! */
- sp_offset -= 4;
- }
- else if (G_FLD (inst->v, 14, 7) == 0xc1
- && G_FLD (inst->v, 2, 0) == 0x0)
- {
- /* subei! r0, n */
- sp_offset += (int) pow (2.0, G_FLD (inst->v, 6, 3));
- }
- else if (G_FLD (inst->v, 14, 7) == 0xc0
- && G_FLD (inst->v, 2, 0) == 0x0)
- {
- /* addei! r0, n */
- /* Solaris 11+gcc 5.5 has ambiguous overloads of pow, so we
- pass 2.0 instead of 2 to get the right one. */
- sp_offset -= (int) pow (2.0, G_FLD (inst->v, 6, 3));
- }
- }
- else
- {
- inst_len = SCORE_INSTLEN;
-
- if (G_FLD(inst->v, 29, 25) == 0x3
- && G_FLD(inst->v, 2, 0) == 0x4
- && G_FLD(inst->v, 19, 15) == 0)
- {
- /* sw rD, [r0, offset]+ */
- sp_offset += SCORE_INSTLEN;
-
- if (G_FLD(inst->v, 24, 20) == 0x3)
- {
- /* rD = r3 */
- if (ra_offset_p == 0)
- {
- ra_offset = sp_offset;
- ra_offset_p = 1;
- }
- }
- else if (G_FLD(inst->v, 24, 20) == 0x2)
- {
- /* rD = r2 */
- if (fp_offset_p == 0)
- {
- fp_offset = sp_offset;
- fp_offset_p = 1;
- }
- }
- }
- else if (G_FLD(inst->v, 29, 25) == 0x14
- && G_FLD(inst->v, 19,15) == 0)
- {
- /* sw rD, [r0, offset] */
- if (G_FLD(inst->v, 24, 20) == 0x3)
- {
- /* rD = r3 */
- ra_offset = sp_offset - G_FLD(inst->v, 14, 0);
- ra_offset_p = 1;
- }
- else if (G_FLD(inst->v, 24, 20) == 0x2)
- {
- /* rD = r2 */
- fp_offset = sp_offset - G_FLD(inst->v, 14, 0);
- fp_offset_p = 1;
- }
- }
- else if (G_FLD (inst->v, 29, 15) == 0x1c60
- && G_FLD (inst->v, 2, 0) == 0x0)
- {
- /* lw r3, [r0]+, 4 */
- sp_offset -= SCORE_INSTLEN;
- ra_offset_p = 1;
- }
- else if (G_FLD (inst->v, 29, 15) == 0x1c40
- && G_FLD (inst->v, 2, 0) == 0x0)
- {
- /* lw r2, [r0]+, 4 */
- sp_offset -= SCORE_INSTLEN;
- fp_offset_p = 1;
- }
-
- else if (G_FLD (inst->v, 29, 17) == 0x100
- && G_FLD (inst->v, 0, 0) == 0x0)
- {
- /* addi r0, -offset */
- sp_offset += 65536 - G_FLD (inst->v, 16, 1);
- }
- else if (G_FLD (inst->v, 29, 17) == 0x110
- && G_FLD (inst->v, 0, 0) == 0x0)
- {
- /* addi r2, offset */
- if (pc - cur_pc > 4)
- {
- unsigned int save_v = inst->v;
- inst_t *inst2 =
- score7_fetch_inst (gdbarch, cur_pc + SCORE_INSTLEN, NULL);
- if (inst2->v == 0x23)
- {
- /* mv! r0, r2 */
- sp_offset -= G_FLD (save_v, 16, 1);
- }
- }
- }
- }
- }
-
- /* Save RA. */
- if (ra_offset_p == 1)
- {
- if (this_cache->saved_regs[SCORE_PC_REGNUM].is_realreg ()
- && this_cache->saved_regs[SCORE_PC_REGNUM].realreg ()
- == SCORE_PC_REGNUM)
- this_cache->saved_regs[SCORE_PC_REGNUM].set_addr (sp + sp_offset
- - ra_offset);
- }
- else
- {
- this_cache->saved_regs[SCORE_PC_REGNUM] =
- this_cache->saved_regs[SCORE_RA_REGNUM];
- }
-
- /* Save FP. */
- if (fp_offset_p == 1)
- {
- if (this_cache->saved_regs[SCORE_FP_REGNUM].is_realreg ()
- && this_cache->saved_regs[SCORE_FP_REGNUM].realreg ()
- == SCORE_FP_REGNUM)
- this_cache->saved_regs[SCORE_FP_REGNUM].set_addr (sp + sp_offset
- - fp_offset);
- }
-
- /* Save SP and FP. */
- this_cache->base = sp + sp_offset;
- this_cache->fp = fp;
-
- /* Don't forget to free MEMBLOCK if we allocated it. */
- if (memblock_ptr != NULL)
- score7_free_memblock (memblock_ptr);
-}
-
-static void
-score3_analyze_prologue (CORE_ADDR startaddr, CORE_ADDR pc,
- struct frame_info *this_frame,
- struct score_frame_cache *this_cache)
-{
- CORE_ADDR sp;
- CORE_ADDR fp;
- CORE_ADDR cur_pc = startaddr;
- enum bfd_endian byte_order
- = gdbarch_byte_order (get_frame_arch (this_frame));
-
- int sp_offset = 0;
- int ra_offset = 0;
- int fp_offset = 0;
- int ra_offset_p = 0;
- int fp_offset_p = 0;
- int inst_len = 0;
-
- sp = get_frame_register_unsigned (this_frame, SCORE_SP_REGNUM);
- fp = get_frame_register_unsigned (this_frame, SCORE_FP_REGNUM);
-
- for (; cur_pc < pc; cur_pc += inst_len)
- {
- inst_t *inst = NULL;
-
- inst = score3_adjust_pc_and_fetch_inst (&cur_pc, &inst_len, byte_order);
-
- /* FIXME: make a full-power prologue analyzer. */
- if (inst->len == 2)
- {
- if (G_FLD (inst->v, 14, 12) == 0x0
- && G_FLD (inst->v, 11, 7) == 0x0
- && G_FLD (inst->v, 6, 5) == 0x3)
- {
- /* push! */
- sp_offset += 4;
-
- if (G_FLD (inst->v, 4, 0) == 0x3
- && ra_offset_p == 0)
- {
- /* push! r3, [r0] */
- ra_offset = sp_offset;
- ra_offset_p = 1;
- }
- else if (G_FLD (inst->v, 4, 0) == 0x2
- && fp_offset_p == 0)
- {
- /* push! r2, [r0] */
- fp_offset = sp_offset;
- fp_offset_p = 1;
- }
- }
- else if (G_FLD (inst->v, 14, 12) == 0x6
- && G_FLD (inst->v, 11, 10) == 0x3)
- {
- /* rpush! */
- int start_r = G_FLD (inst->v, 9, 5);
- int cnt = G_FLD (inst->v, 4, 0);
-
- if ((ra_offset_p == 0)
- && (start_r <= SCORE_RA_REGNUM)
- && (SCORE_RA_REGNUM < start_r + cnt))
- {
- /* rpush! contains r3 */
- ra_offset_p = 1;
- ra_offset = sp_offset + 4 * (SCORE_RA_REGNUM - start_r) + 4;
- }
-
- if ((fp_offset_p == 0)
- && (start_r <= SCORE_FP_REGNUM)
- && (SCORE_FP_REGNUM < start_r + cnt))
- {
- /* rpush! contains r2 */
- fp_offset_p = 1;
- fp_offset = sp_offset + 4 * (SCORE_FP_REGNUM - start_r) + 4;
- }
-
- sp_offset += 4 * cnt;
- }
- else if (G_FLD (inst->v, 14, 12) == 0x0
- && G_FLD (inst->v, 11, 7) == 0x0
- && G_FLD (inst->v, 6, 5) == 0x2)
- {
- /* pop! */
- sp_offset -= 4;
- }
- else if (G_FLD (inst->v, 14, 12) == 0x6
- && G_FLD (inst->v, 11, 10) == 0x2)
- {
- /* rpop! */
- sp_offset -= 4 * G_FLD (inst->v, 4, 0);
- }
- else if (G_FLD (inst->v, 14, 12) == 0x5
- && G_FLD (inst->v, 11, 10) == 0x3
- && G_FLD (inst->v, 9, 6) == 0x0)
- {
- /* addi! r0, -offset */
- int imm = G_FLD (inst->v, 5, 0);
- if (imm >> 5)
- imm = -(0x3F - imm + 1);
- sp_offset -= imm;
- }
- else if (G_FLD (inst->v, 14, 12) == 0x5
- && G_FLD (inst->v, 11, 10) == 0x3
- && G_FLD (inst->v, 9, 6) == 0x2)
- {
- /* addi! r2, offset */
- if (pc - cur_pc >= 2)
- {
- inst_t *inst2;
-
- cur_pc += inst->len;
- inst2 = score3_adjust_pc_and_fetch_inst (&cur_pc, NULL,
- byte_order);
-
- if (inst2->len == 2
- && G_FLD (inst2->v, 14, 10) == 0x10
- && G_FLD (inst2->v, 9, 5) == 0x0
- && G_FLD (inst2->v, 4, 0) == 0x2)
- {
- /* mv! r0, r2 */
- int imm = G_FLD (inst->v, 5, 0);
- if (imm >> 5)
- imm = -(0x3F - imm + 1);
- sp_offset -= imm;
- }
- }
- }
- }
- else if (inst->len == 4)
- {
- if (G_FLD (inst->v, 29, 25) == 0x3
- && G_FLD (inst->v, 2, 0) == 0x4
- && G_FLD (inst->v, 24, 20) == 0x3
- && G_FLD (inst->v, 19, 15) == 0x0)
- {
- /* sw r3, [r0, offset]+ */
- sp_offset += inst->len;
- if (ra_offset_p == 0)
- {
- ra_offset = sp_offset;
- ra_offset_p = 1;
- }
- }
- else if (G_FLD (inst->v, 29, 25) == 0x3
- && G_FLD (inst->v, 2, 0) == 0x4
- && G_FLD (inst->v, 24, 20) == 0x2
- && G_FLD (inst->v, 19, 15) == 0x0)
- {
- /* sw r2, [r0, offset]+ */
- sp_offset += inst->len;
- if (fp_offset_p == 0)
- {
- fp_offset = sp_offset;
- fp_offset_p = 1;
- }
- }
- else if (G_FLD (inst->v, 29, 25) == 0x7
- && G_FLD (inst->v, 2, 0) == 0x0
- && G_FLD (inst->v, 24, 20) == 0x3
- && G_FLD (inst->v, 19, 15) == 0x0)
- {
- /* lw r3, [r0]+, 4 */
- sp_offset -= inst->len;
- ra_offset_p = 1;
- }
- else if (G_FLD (inst->v, 29, 25) == 0x7
- && G_FLD (inst->v, 2, 0) == 0x0
- && G_FLD (inst->v, 24, 20) == 0x2
- && G_FLD (inst->v, 19, 15) == 0x0)
- {
- /* lw r2, [r0]+, 4 */
- sp_offset -= inst->len;
- fp_offset_p = 1;
- }
- else if (G_FLD (inst->v, 29, 25) == 0x1
- && G_FLD (inst->v, 19, 17) == 0x0
- && G_FLD (inst->v, 24, 20) == 0x0
- && G_FLD (inst->v, 0, 0) == 0x0)
- {
- /* addi r0, -offset */
- int imm = G_FLD (inst->v, 16, 1);
- if (imm >> 15)
- imm = -(0xFFFF - imm + 1);
- sp_offset -= imm;
- }
- else if (G_FLD (inst->v, 29, 25) == 0x1
- && G_FLD (inst->v, 19, 17) == 0x0
- && G_FLD (inst->v, 24, 20) == 0x2
- && G_FLD (inst->v, 0, 0) == 0x0)
- {
- /* addi r2, offset */
- if (pc - cur_pc >= 2)
- {
- inst_t *inst2;
-
- cur_pc += inst->len;
- inst2 = score3_adjust_pc_and_fetch_inst (&cur_pc, NULL,
- byte_order);
-
- if (inst2->len == 2
- && G_FLD (inst2->v, 14, 10) == 0x10
- && G_FLD (inst2->v, 9, 5) == 0x0
- && G_FLD (inst2->v, 4, 0) == 0x2)
- {
- /* mv! r0, r2 */
- int imm = G_FLD (inst->v, 16, 1);
- if (imm >> 15)
- imm = -(0xFFFF - imm + 1);
- sp_offset -= imm;
- }
- }
- }
- }
- }
-
- /* Save RA. */
- if (ra_offset_p == 1)
- {
- if (this_cache->saved_regs[SCORE_PC_REGNUM].is_realreg ()
- && this_cache->saved_regs[SCORE_PC_REGNUM].realreg ()
- == SCORE_PC_REGNUM)
- this_cache->saved_regs[SCORE_PC_REGNUM].set_addr (sp + sp_offset
- - ra_offset);
- }
- else
- {
- this_cache->saved_regs[SCORE_PC_REGNUM] =
- this_cache->saved_regs[SCORE_RA_REGNUM];
- }
-
- /* Save FP. */
- if (fp_offset_p == 1)
- {
- if (this_cache->saved_regs[SCORE_FP_REGNUM].is_realreg ()
- && this_cache->saved_regs[SCORE_FP_REGNUM].realreg ()
- == SCORE_FP_REGNUM)
- this_cache->saved_regs[SCORE_FP_REGNUM].set_addr (sp + sp_offset
- - fp_offset);
- }
-
- /* Save SP and FP. */
- this_cache->base = sp + sp_offset;
- this_cache->fp = fp;
-}
-
-static struct score_frame_cache *
-score_make_prologue_cache (struct frame_info *this_frame, void **this_cache)
-{
- struct score_frame_cache *cache;
-
- if ((*this_cache) != NULL)
- return (struct score_frame_cache *) (*this_cache);
-
- cache = FRAME_OBSTACK_ZALLOC (struct score_frame_cache);
- (*this_cache) = cache;
- cache->saved_regs = trad_frame_alloc_saved_regs (this_frame);
-
- /* Analyze the prologue. */
- {
- const CORE_ADDR pc = get_frame_pc (this_frame);
- CORE_ADDR start_addr;
-
- find_pc_partial_function (pc, NULL, &start_addr, NULL);
- if (start_addr == 0)
- return cache;
-
- if (target_mach == bfd_mach_score3)
- score3_analyze_prologue (start_addr, pc, this_frame,
- (struct score_frame_cache *) *this_cache);
- else
- score7_analyze_prologue (start_addr, pc, this_frame,
- (struct score_frame_cache *) *this_cache);
- }
-
- /* Save SP. */
- cache->saved_regs[SCORE_SP_REGNUM].set_value (cache->base);
-
- return (struct score_frame_cache *) (*this_cache);
-}
-
-static void
-score_prologue_this_id (struct frame_info *this_frame, void **this_cache,
- struct frame_id *this_id)
-{
- struct score_frame_cache *info = score_make_prologue_cache (this_frame,
- this_cache);
- (*this_id) = frame_id_build (info->base, get_frame_func (this_frame));
-}
-
-static struct value *
-score_prologue_prev_register (struct frame_info *this_frame,
- void **this_cache, int regnum)
-{
- struct score_frame_cache *info = score_make_prologue_cache (this_frame,
- this_cache);
- return trad_frame_get_prev_register (this_frame, info->saved_regs, regnum);
-}
-
-static const struct frame_unwind score_prologue_unwind =
-{
- "score prologue",
- NORMAL_FRAME,
- default_frame_unwind_stop_reason,
- score_prologue_this_id,
- score_prologue_prev_register,
- NULL,
- default_frame_sniffer,
- NULL
-};
-
-static CORE_ADDR
-score_prologue_frame_base_address (struct frame_info *this_frame,
- void **this_cache)
-{
- struct score_frame_cache *info =
- score_make_prologue_cache (this_frame, this_cache);
- return info->fp;
-}
-
-static const struct frame_base score_prologue_frame_base =
-{
- &score_prologue_unwind,
- score_prologue_frame_base_address,
- score_prologue_frame_base_address,
- score_prologue_frame_base_address,
-};
-
-static const struct frame_base *
-score_prologue_frame_base_sniffer (struct frame_info *this_frame)
-{
- return &score_prologue_frame_base;
-}
-
-/* Core file support. */
-
-static const struct regcache_map_entry score7_linux_gregmap[] =
- {
- /* FIXME: According to the current Linux kernel, r0 is preceded by
- 9 rather than 7 words. */
- { 7, REGCACHE_MAP_SKIP, 4 },
- { 32, 0, 4 }, /* r0 ... r31 */
- { 1, 55, 4 }, /* CEL */
- { 1, 54, 4 }, /* CEH */
- { 1, 53, 4 }, /* sr0, i.e. cnt or COUNTER */
- { 1, 52, 4 }, /* sr1, i.e. lcr or LDCR */
- { 1, 51, 4 }, /* sr2, i.e. scr or STCR */
- { 1, 49, 4 }, /* PC (same slot as EPC) */
- { 1, 38, 4 }, /* EMA */
- { 1, 32, 4 }, /* PSR */
- { 1, 34, 4 }, /* ECR */
- { 1, 33, 4 }, /* COND */
- { 0 }
- };
-
-#define SCORE7_LINUX_EPC_OFFSET (44 * 4)
-#define SCORE7_LINUX_SIZEOF_GREGSET (49 * 4)
-
-static void
-score7_linux_supply_gregset(const struct regset *regset,
- struct regcache *regcache,
- int regnum, const void *buf,
- size_t size)
-{
- regcache_supply_regset (regset, regcache, regnum, buf, size);
-
- /* Supply the EPC from the same slot as the PC. Note that the
- collect function will store the PC in that slot. */
- if ((regnum == -1 || regnum == SCORE_EPC_REGNUM)
- && size >= SCORE7_LINUX_EPC_OFFSET + 4)
- regcache->raw_supply
- (SCORE_EPC_REGNUM, (const gdb_byte *) buf + SCORE7_LINUX_EPC_OFFSET);
-}
-
-static const struct regset score7_linux_gregset =
- {
- score7_linux_gregmap,
- score7_linux_supply_gregset,
- regcache_collect_regset
- };
-
-/* Iterate over core file register note sections. */
-
-static void
-score7_linux_iterate_over_regset_sections (struct gdbarch *gdbarch,
- iterate_over_regset_sections_cb *cb,
- void *cb_data,
- const struct regcache *regcache)
-{
- cb (".reg", SCORE7_LINUX_SIZEOF_GREGSET, SCORE7_LINUX_SIZEOF_GREGSET,
- &score7_linux_gregset, NULL, cb_data);
-}
-
-static struct gdbarch *
-score_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
-{
- struct gdbarch *gdbarch;
- target_mach = info.bfd_arch_info->mach;
-
- arches = gdbarch_list_lookup_by_info (arches, &info);
- if (arches != NULL)
- {
- return (arches->gdbarch);
- }
- gdbarch = gdbarch_alloc (&info, NULL);
-
- set_gdbarch_short_bit (gdbarch, 16);
- set_gdbarch_int_bit (gdbarch, 32);
- set_gdbarch_float_bit (gdbarch, 32);
- set_gdbarch_double_bit (gdbarch, 64);
- set_gdbarch_long_double_bit (gdbarch, 64);
-#if WITH_SIM
- set_gdbarch_register_sim_regno (gdbarch, score_register_sim_regno);
-#endif
- set_gdbarch_pc_regnum (gdbarch, SCORE_PC_REGNUM);
- set_gdbarch_sp_regnum (gdbarch, SCORE_SP_REGNUM);
- set_gdbarch_adjust_breakpoint_address (gdbarch,
- score_adjust_breakpoint_address);
- set_gdbarch_register_type (gdbarch, score_register_type);
- set_gdbarch_frame_align (gdbarch, score_frame_align);
- set_gdbarch_inner_than (gdbarch, core_addr_lessthan);
-
- switch (target_mach)
- {
- case bfd_mach_score7:
- set_gdbarch_breakpoint_kind_from_pc (gdbarch,
- score7_breakpoint_kind_from_pc);
- set_gdbarch_sw_breakpoint_from_kind (gdbarch,
- score7_sw_breakpoint_from_kind);
- set_gdbarch_skip_prologue (gdbarch, score7_skip_prologue);
- set_gdbarch_stack_frame_destroyed_p (gdbarch,
- score7_stack_frame_destroyed_p);
- set_gdbarch_register_name (gdbarch, score7_register_name);
- set_gdbarch_num_regs (gdbarch, SCORE7_NUM_REGS);
- /* Core file support. */
- set_gdbarch_iterate_over_regset_sections
- (gdbarch, score7_linux_iterate_over_regset_sections);
- break;
-
- case bfd_mach_score3:
- set_gdbarch_breakpoint_kind_from_pc (gdbarch,
- score3_breakpoint_kind_from_pc);
- set_gdbarch_sw_breakpoint_from_kind (gdbarch,
- score3_sw_breakpoint_from_kind);
- set_gdbarch_skip_prologue (gdbarch, score3_skip_prologue);
- set_gdbarch_stack_frame_destroyed_p (gdbarch,
- score3_stack_frame_destroyed_p);
- set_gdbarch_register_name (gdbarch, score3_register_name);
- set_gdbarch_num_regs (gdbarch, SCORE3_NUM_REGS);
- break;
- }
-
- /* Watchpoint hooks. */
- set_gdbarch_have_nonsteppable_watchpoint (gdbarch, 1);
-
- /* Dummy frame hooks. */
- set_gdbarch_return_value (gdbarch, score_return_value);
- set_gdbarch_call_dummy_location (gdbarch, AT_ENTRY_POINT);
- set_gdbarch_push_dummy_call (gdbarch, score_push_dummy_call);
-
- /* Normal frame hooks. */
- dwarf2_append_unwinders (gdbarch);
- frame_base_append_sniffer (gdbarch, dwarf2_frame_base_sniffer);
- frame_unwind_append_unwinder (gdbarch, &score_prologue_unwind);
- frame_base_append_sniffer (gdbarch, score_prologue_frame_base_sniffer);
-
- return gdbarch;
-}
-
-void _initialize_score_tdep ();
-void
-_initialize_score_tdep ()
-{
- gdbarch_register (bfd_arch_score, score_gdbarch_init, NULL);
-}
projects / binutils-gdb.git / commitdiff