gdb/score-tdep.c - gdb
Global variables defined
Data types defined
Functions defined
Macros defined
Source code
- #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;
- struct 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 CORE_ADDR
- score_unwind_sp (struct gdbarch *gdbarch, struct frame_info *next_frame)
- {
- return frame_unwind_register_unsigned (next_frame, SCORE_SP_REGNUM);
- }
- static CORE_ADDR
- score_unwind_pc (struct gdbarch *gdbarch, struct frame_info *next_frame)
- {
- return frame_unwind_register_unsigned (next_frame, SCORE_PC_REGNUM);
- }
- 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 int
- score_print_insn (bfd_vma memaddr, struct disassemble_info *info)
- {
- if (info->endian == BFD_ENDIAN_BIG)
- return print_insn_big_score (memaddr, info);
- else
- return print_insn_little_score (memaddr, info);
- }
- 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)
- {
-
- memcpy (buf, memblock, SCORE_INSTLEN);
- }
- else
- {
-
- 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;
- };
-
- static const struct breakplace bk_table[16] =
- {
-
- {0, 0},
- {0, 0},
- {0, 4},
- {0, 6},
- {0, 0},
- {0, 0},
- {-2, 6},
- {0, 0},
-
- {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)
- {
-
- cbits = (cbits >> 1) & 0x7;
- bk_index = cbits;
- }
- else
- {
-
- 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;
- }
- static const gdb_byte *
- score7_breakpoint_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr,
- int *lenptr)
- {
- enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
- gdb_byte buf[SCORE_INSTLEN] = { 0 };
- int ret;
- unsigned int raw;
- 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 (byte_order == BFD_ENDIAN_BIG)
- {
- if (!(raw & 0x80008000))
- {
-
- static gdb_byte big_breakpoint16[] = { 0x60, 0x02 };
- *pcptr &= ~0x1;
- *lenptr = sizeof (big_breakpoint16);
- return big_breakpoint16;
- }
- else
- {
-
- static gdb_byte big_breakpoint32[] = { 0x80, 0x00, 0x80, 0x06 };
- *pcptr &= ~0x3;
- *lenptr = sizeof (big_breakpoint32);
- return big_breakpoint32;
- }
- }
- else
- {
- if (!(raw & 0x80008000))
- {
-
- static gdb_byte little_breakpoint16[] = { 0x02, 0x60 };
- *pcptr &= ~0x1;
- *lenptr = sizeof (little_breakpoint16);
- return little_breakpoint16;
- }
- else
- {
-
- static gdb_byte little_breakpoint32[] = { 0x06, 0x80, 0x00, 0x80 };
- *pcptr &= ~0x3;
- *lenptr = sizeof (little_breakpoint32);
- return little_breakpoint32;
- }
- }
- }
- static const gdb_byte *
- score3_breakpoint_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr,
- int *lenptr)
- {
- enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
- CORE_ADDR adjust_pc = *pcptr;
- int len;
- static gdb_byte score_break_insns[6][6] = {
-
- { 0x00, 0x20 },
- { 0x80, 0x00, 0x00, 0x06 },
- { 0x80, 0x00, 0x80, 0x00, 0x00, 0x00 },
-
- { 0x20, 0x00 },
- { 0x00, 0x80, 0x06, 0x00 },
- { 0x00, 0x80, 0x00, 0x80, 0x00, 0x00 }};
- gdb_byte *p = NULL;
- int index = 0;
- score3_adjust_pc_and_fetch_inst (&adjust_pc, &len, byte_order);
- index = ((byte_order == BFD_ENDIAN_BIG) ? 0 : 3) + (len / 2 - 1);
- p = score_break_insns[index];
- *pcptr = adjust_pc;
- *lenptr = len;
- return p;
- }
- 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 (regcache, regnum, reg_offset, length,
- readbuf + buf_offset);
- if (writebuf != NULL)
- regcache_cooked_write_part (regcache, 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) == TYPE_CODE_STRUCT
- || TYPE_CODE (type) == TYPE_CODE_UNION
- || TYPE_CODE (type) == 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 struct frame_id
- score_dummy_id (struct gdbarch *gdbarch, struct frame_info *this_frame)
- {
- return frame_id_build (get_frame_register_unsigned (this_frame,
- SCORE_SP_REGNUM),
- get_frame_pc (this_frame));
- }
- static int
- score_type_needs_double_align (struct type *type)
- {
- enum type_code typecode = TYPE_CODE (type);
- 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_NFIELDS (type);
- for (i = 0; i < n; i++)
- if (score_type_needs_double_align (TYPE_FIELD_TYPE (type, i)))
- 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,
- int struct_return, 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;
-
- regcache_cooked_write_unsigned (regcache, SCORE_RA_REGNUM, bp_addr);
-
- 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;
-
- if (struct_return)
- {
- regcache_cooked_write_unsigned (regcache, argreg++, struct_addr);
- stack_offset += SCORE_REGSIZE;
- }
-
- for (argnum = 0; argnum < nargs; argnum++)
- {
- struct value *arg = args[argnum];
- struct type *arg_type = check_typedef (value_type (arg));
- enum type_code typecode = TYPE_CODE (arg_type);
- const gdb_byte *val = value_contents (arg);
- int downward_offset = 0;
- int odd_sized_struct_p;
- int arg_last_part_p = 0;
- arglen = TYPE_LENGTH (arg_type);
- odd_sized_struct_p = (arglen > SCORE_REGSIZE
- && arglen % SCORE_REGSIZE != 0);
-
- if (score_type_needs_double_align (arg_type))
- {
- if (argreg & 1)
- argreg++;
- }
-
- 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);
-
- 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);
-
- 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);
- }
- }
-
- 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))
- {
-
- 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))
- {
-
- 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))
- {
-
- pc = cpc + SCORE16_INSTLEN;
- break;
- }
- else if ((inst->len == 2)
- && ((G_FLD (inst->v, 14, 12) == 3)
- || (G_FLD (inst->v, 14, 12) == 4)
- || (G_FLD (inst->v, 14, 12) == 0x0
- && G_FLD (inst->v, 3, 0) == 0x4)))
- break;
- else if ((inst->len == 4)
- && ((G_FLD (inst->v, 29, 25) == 2)
- || (G_FLD (inst->v, 29, 25) == 4)
- || (G_FLD (inst->v, 29, 25) == 0x0
- && G_FLD (inst->v, 6, 1) == 0x4)))
- 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))
- {
-
- 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))
- {
-
- 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))
- {
-
- pc = cpc + inst->len;
- break;
- }
- else if (inst->len == 2
- && ((G_FLD (inst->v, 14, 12) == 3)
- || (G_FLD (inst->v, 14, 12) == 0x0
- && G_FLD (inst->v, 11, 5) == 0x4)))
- break;
- else if (inst->len == 4
- && ((G_FLD (inst->v, 29, 25) == 2)
- || (G_FLD (inst->v, 29, 25) == 4)))
- break;
- cpc += inst->len;
- }
- return pc;
- }
- static int
- score7_in_function_epilogue_p (struct gdbarch *gdbarch, CORE_ADDR cur_pc)
- {
- inst_t *inst = score7_fetch_inst (gdbarch, cur_pc, NULL);
- if (inst->v == 0x23)
- return 1;
- else if (G_FLD (inst->v, 14, 12) == 0x2
- && G_FLD (inst->v, 3, 0) == 0xa)
- return 1;
- else if (G_FLD (inst->v, 14, 12) == 0x0
- && G_FLD (inst->v, 7, 0) == 0x34)
- return 1;
- else if (G_FLD (inst->v, 29, 15) == 0x2
- && G_FLD (inst->v, 6, 1) == 0x2b)
- return 1;
- 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;
- else
- return 0;
- }
- static int
- score3_in_function_epilogue_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;
- 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;
- else if (inst->len == 2
- && (G_FLD (inst->v, 14, 12) == 0x0)
- && (G_FLD (inst->v, 11, 5) == 0x2))
- return 1;
- 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;
- 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;
- 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;
- 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)
- {
- error (_("Error: malloc size < 0 in file:%s, line:%d!"),
- __FILE__, __LINE__);
- return NULL;
- }
- else if (size == 0)
- return NULL;
- memblock = 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)
- {
-
- }
- else if (cur_pc - prev_pc == 2 && (cur_pc & 0x3) == 0)
- {
-
- *memblock += SCORE_INSTLEN;
- }
- else if (cur_pc - prev_pc == 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;
-
- 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)
- {
-
- score7_adjust_memblock_ptr (&memblock, prev_pc, cur_pc);
- inst = score7_fetch_inst (gdbarch, cur_pc, memblock);
- }
- else
- {
-
- inst = score7_fetch_inst (gdbarch, cur_pc, NULL);
- }
- FIXME
- if (inst->len == 2)
- {
- inst_len = SCORE16_INSTLEN;
- if (G_FLD (inst->v, 14, 12) == 0x2
- && G_FLD (inst->v, 3, 0) == 0xe)
- {
-
- sp_offset += 4;
- if (G_FLD (inst->v, 11, 7) == 0x6
- && ra_offset_p == 0)
- {
-
- ra_offset = sp_offset;
- ra_offset_p = 1;
- }
- else if (G_FLD (inst->v, 11, 7) == 0x4
- && fp_offset_p == 0)
- {
-
- fp_offset = sp_offset;
- fp_offset_p = 1;
- }
- }
- else if (G_FLD (inst->v, 14, 12) == 0x2
- && G_FLD (inst->v, 3, 0) == 0xa)
- {
-
- sp_offset -= 4;
- }
- else if (G_FLD (inst->v, 14, 7) == 0xc1
- && G_FLD (inst->v, 2, 0) == 0x0)
- {
-
- sp_offset += (int) pow (2, G_FLD (inst->v, 6, 3));
- }
- else if (G_FLD (inst->v, 14, 7) == 0xc0
- && G_FLD (inst->v, 2, 0) == 0x0)
- {
-
- sp_offset -= (int) pow (2, 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)
- {
-
- sp_offset += SCORE_INSTLEN;
- if (G_FLD(inst->v, 24, 20) == 0x3)
- {
-
- if (ra_offset_p == 0)
- {
- ra_offset = sp_offset;
- ra_offset_p = 1;
- }
- }
- else if (G_FLD(inst->v, 24, 20) == 0x2)
- {
-
- 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)
- {
-
- if (G_FLD(inst->v, 24, 20) == 0x3)
- {
-
- ra_offset = sp_offset - G_FLD(inst->v, 14, 0);
- ra_offset_p = 1;
- }
- else if (G_FLD(inst->v, 24, 20) == 0x2)
- {
-
- 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)
- {
-
- sp_offset -= SCORE_INSTLEN;
- ra_offset_p = 1;
- }
- else if (G_FLD (inst->v, 29, 15) == 0x1c40
- && G_FLD (inst->v, 2, 0) == 0x0)
- {
-
- sp_offset -= SCORE_INSTLEN;
- fp_offset_p = 1;
- }
- else if (G_FLD (inst->v, 29, 17) == 0x100
- && G_FLD (inst->v, 0, 0) == 0x0)
- {
-
- 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)
- {
-
- 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)
- {
-
- sp_offset -= G_FLD (save_v, 16, 1);
- }
- }
- }
- }
- }
-
- if (ra_offset_p == 1)
- {
- if (this_cache->saved_regs[SCORE_PC_REGNUM].addr == -1)
- this_cache->saved_regs[SCORE_PC_REGNUM].addr =
- sp + sp_offset - ra_offset;
- }
- else
- {
- this_cache->saved_regs[SCORE_PC_REGNUM] =
- this_cache->saved_regs[SCORE_RA_REGNUM];
- }
-
- if (fp_offset_p == 1)
- {
- if (this_cache->saved_regs[SCORE_FP_REGNUM].addr == -1)
- this_cache->saved_regs[SCORE_FP_REGNUM].addr =
- sp + sp_offset - fp_offset;
- }
-
- this_cache->base = sp + sp_offset;
- this_cache->fp = fp;
-
- 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;
- CORE_ADDR prev_pc = -1;
- 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;
- inst = score3_adjust_pc_and_fetch_inst (&cur_pc, &inst_len, byte_order);
- FIXME
- 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)
- {
-
- sp_offset += 4;
- if (G_FLD (inst->v, 4, 0) == 0x3
- && ra_offset_p == 0)
- {
-
- ra_offset = sp_offset;
- ra_offset_p = 1;
- }
- else if (G_FLD (inst->v, 4, 0) == 0x2
- && fp_offset_p == 0)
- {
-
- fp_offset = sp_offset;
- fp_offset_p = 1;
- }
- }
- else if (G_FLD (inst->v, 14, 12) == 0x6
- && G_FLD (inst->v, 11, 10) == 0x3)
- {
-
- 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))
- {
-
- 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))
- {
-
- 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)
- {
-
- sp_offset -= 4;
- }
- else if (G_FLD (inst->v, 14, 12) == 0x6
- && G_FLD (inst->v, 11, 10) == 0x2)
- {
-
- 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)
- {
-
- 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)
- {
-
- if (pc - cur_pc >= 2)
- {
- unsigned int save_v = inst->v;
- 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)
- {
-
- 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)
- {
-
- 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)
- {
-
- 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)
- {
-
- 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)
- {
-
- 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)
- {
-
- 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)
- {
-
- if (pc - cur_pc >= 2)
- {
- unsigned int save_v = inst->v;
- 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)
- {
-
- int imm = G_FLD (inst->v, 16, 1);
- if (imm >> 15)
- imm = -(0xFFFF - imm + 1);
- sp_offset -= imm;
- }
- }
- }
- }
- }
-
- if (ra_offset_p == 1)
- {
- if (this_cache->saved_regs[SCORE_PC_REGNUM].addr == -1)
- this_cache->saved_regs[SCORE_PC_REGNUM].addr =
- sp + sp_offset - ra_offset;
- }
- else
- {
- this_cache->saved_regs[SCORE_PC_REGNUM] =
- this_cache->saved_regs[SCORE_RA_REGNUM];
- }
-
- if (fp_offset_p == 1)
- {
- if (this_cache->saved_regs[SCORE_FP_REGNUM].addr == -1)
- this_cache->saved_regs[SCORE_FP_REGNUM].addr =
- sp + sp_offset - fp_offset;
- }
-
- 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 (*this_cache);
- cache = FRAME_OBSTACK_ZALLOC (struct score_frame_cache);
- (*this_cache) = cache;
- cache->saved_regs = trad_frame_alloc_saved_regs (this_frame);
-
- {
- 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, *this_cache);
- else
- score7_analyze_prologue (start_addr, pc, this_frame, *this_cache);
- }
-
- trad_frame_set_value (cache->saved_regs, SCORE_SP_REGNUM, cache->base);
- return (*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 =
- {
- 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;
- }
- static const struct regcache_map_entry score7_linux_gregmap[] =
- {
- FIXME
- { 7, REGCACHE_MAP_SKIP, 4 },
- { 32, 0, 4 },
- { 1, 55, 4 },
- { 1, 54, 4 },
- { 1, 53, 4 },
- { 1, 52, 4 },
- { 1, 51, 4 },
- { 1, 49, 4 },
- { 1, 38, 4 },
- { 1, 32, 4 },
- { 1, 34, 4 },
- { 1, 33, 4 },
- { 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);
-
- if ((regnum == -1 || regnum == SCORE_EPC_REGNUM)
- && size >= SCORE7_LINUX_EPC_OFFSET + 4)
- regcache_raw_supply (regcache, 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
- };
- 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_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);
- set_gdbarch_unwind_sp (gdbarch, score_unwind_sp);
- set_gdbarch_unwind_pc (gdbarch, score_unwind_pc);
- set_gdbarch_print_insn (gdbarch, score_print_insn);
- switch (target_mach)
- {
- case bfd_mach_score7:
- set_gdbarch_breakpoint_from_pc (gdbarch, score7_breakpoint_from_pc);
- set_gdbarch_skip_prologue (gdbarch, score7_skip_prologue);
- set_gdbarch_in_function_epilogue_p (gdbarch,
- score7_in_function_epilogue_p);
- set_gdbarch_register_name (gdbarch, score7_register_name);
- set_gdbarch_num_regs (gdbarch, SCORE7_NUM_REGS);
-
- set_gdbarch_iterate_over_regset_sections
- (gdbarch, score7_linux_iterate_over_regset_sections);
- break;
- case bfd_mach_score3:
- set_gdbarch_breakpoint_from_pc (gdbarch, score3_breakpoint_from_pc);
- set_gdbarch_skip_prologue (gdbarch, score3_skip_prologue);
- set_gdbarch_in_function_epilogue_p (gdbarch,
- score3_in_function_epilogue_p);
- set_gdbarch_register_name (gdbarch, score3_register_name);
- set_gdbarch_num_regs (gdbarch, SCORE3_NUM_REGS);
- break;
- }
-
- set_gdbarch_have_nonsteppable_watchpoint (gdbarch, 1);
-
- set_gdbarch_return_value (gdbarch, score_return_value);
- set_gdbarch_call_dummy_location (gdbarch, AT_ENTRY_POINT);
- set_gdbarch_dummy_id (gdbarch, score_dummy_id);
- set_gdbarch_push_dummy_call (gdbarch, score_push_dummy_call);
-
- 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;
- }
- extern initialize_file_ftype _initialize_score_tdep;
- void
- _initialize_score_tdep (void)
- {
- gdbarch_register (bfd_arch_score, score_gdbarch_init, NULL);
- }