From 60a1502afcd909c408239a4397b231b26c1d52c4 Mon Sep 17 00:00:00 2001 From: Michael Snyder Date: Tue, 9 Mar 2010 18:25:41 +0000 Subject: [PATCH] 2010-03-09 Michael Snyder * i386-tdep.c (i386_record_lea_modrm_addr): Use extract_signed_int after target_read_memory to get host byte order. (i386_process_record): Ditto. --- gdb/ChangeLog | 6 +++ gdb/i386-tdep.c | 113 +++++++++++++++++++++++++++----------------------------- 2 files changed, 60 insertions(+), 59 deletions(-) diff --git a/gdb/ChangeLog b/gdb/ChangeLog index d8a8914..e917cd4 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,9 @@ +2010-03-09 Michael Snyder + + * i386-tdep.c (i386_record_lea_modrm_addr): Use extract_signed_int + after target_read_memory to get host byte order. + (i386_process_record): Ditto. + 2010-03-09 Keith Seitz Based on work from Daniel Jacobowitz diff --git a/gdb/i386-tdep.c b/gdb/i386-tdep.c index 115bcb9..f386237 100644 --- a/gdb/i386-tdep.c +++ b/gdb/i386-tdep.c @@ -2948,10 +2948,9 @@ static int i386_record_lea_modrm_addr (struct i386_record_s *irp, uint64_t *addr) { struct gdbarch *gdbarch = irp->gdbarch; - int8_t addr8; - int16_t addr16; - int32_t addr32; - ULONGEST addr64; + enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); + gdb_byte buf[4]; + ULONGEST offset64; *addr = 0; if (irp->aflag) @@ -2987,7 +2986,7 @@ i386_record_lea_modrm_addr (struct i386_record_s *irp, uint64_t *addr) if ((base & 7) == 5) { base = 0xff; - if (target_read_memory (irp->addr, (gdb_byte *) &addr32, 4)) + if (target_read_memory (irp->addr, buf, 4)) { if (record_debug) printf_unfiltered (_("Process record: error reading " @@ -2996,7 +2995,7 @@ i386_record_lea_modrm_addr (struct i386_record_s *irp, uint64_t *addr) return -1; } irp->addr += 4; - *addr = addr32; + *addr = extract_signed_integer (buf, 4, byte_order); if (irp->regmap[X86_RECORD_R8_REGNUM] && !havesib) *addr += irp->addr + irp->rip_offset; } @@ -3006,7 +3005,7 @@ i386_record_lea_modrm_addr (struct i386_record_s *irp, uint64_t *addr) } break; case 1: - if (target_read_memory (irp->addr, &addr8, 1)) + if (target_read_memory (irp->addr, buf, 1)) { if (record_debug) printf_unfiltered (_("Process record: error reading memory " @@ -3015,10 +3014,10 @@ i386_record_lea_modrm_addr (struct i386_record_s *irp, uint64_t *addr) return -1; } irp->addr++; - *addr = addr8; + *addr = (int8_t) buf[0]; break; case 2: - if (target_read_memory (irp->addr, (gdb_byte *) &addr32, 4)) + if (target_read_memory (irp->addr, buf, 4)) { if (record_debug) printf_unfiltered (_("Process record: error reading memory " @@ -3026,34 +3025,34 @@ i386_record_lea_modrm_addr (struct i386_record_s *irp, uint64_t *addr) paddress (gdbarch, irp->addr)); return -1; } - *addr = addr32; + *addr = extract_signed_integer (buf, 4, byte_order); irp->addr += 4; break; } - addr64 = 0; + offset64 = 0; if (base != 0xff) { if (base == 4 && irp->popl_esp_hack) *addr += irp->popl_esp_hack; regcache_raw_read_unsigned (irp->regcache, irp->regmap[base], - &addr64); + &offset64); } if (irp->aflag == 2) { - *addr += addr64; + *addr += offset64; } else - *addr = (uint32_t) (addr64 + *addr); + *addr = (uint32_t) (offset64 + *addr); if (havesib && (index != 4 || scale != 0)) { regcache_raw_read_unsigned (irp->regcache, irp->regmap[index], - &addr64); + &offset64); if (irp->aflag == 2) - *addr += addr64 << scale; + *addr += offset64 << scale; else - *addr = (uint32_t) (*addr + (addr64 << scale)); + *addr = (uint32_t) (*addr + (offset64 << scale)); } } else @@ -3064,7 +3063,7 @@ i386_record_lea_modrm_addr (struct i386_record_s *irp, uint64_t *addr) case 0: if (irp->rm == 6) { - if (target_read_memory (irp->addr, (gdb_byte *) &addr16, 2)) + if (target_read_memory (irp->addr, buf, 2)) { if (record_debug) printf_unfiltered (_("Process record: error reading " @@ -3073,7 +3072,7 @@ i386_record_lea_modrm_addr (struct i386_record_s *irp, uint64_t *addr) return -1; } irp->addr += 2; - *addr = addr16; + *addr = extract_signed_integer (buf, 2, byte_order); irp->rm = 0; goto no_rm; } @@ -3083,7 +3082,7 @@ i386_record_lea_modrm_addr (struct i386_record_s *irp, uint64_t *addr) } break; case 1: - if (target_read_memory (irp->addr, &addr8, 1)) + if (target_read_memory (irp->addr, buf, 1)) { if (record_debug) printf_unfiltered (_("Process record: error reading memory " @@ -3092,10 +3091,10 @@ i386_record_lea_modrm_addr (struct i386_record_s *irp, uint64_t *addr) return -1; } irp->addr++; - *addr = addr8; + *addr = (int8_t) buf[0]; break; case 2: - if (target_read_memory (irp->addr, (gdb_byte *) &addr16, 2)) + if (target_read_memory (irp->addr, buf, 2)) { if (record_debug) printf_unfiltered (_("Process record: error reading memory " @@ -3104,7 +3103,7 @@ i386_record_lea_modrm_addr (struct i386_record_s *irp, uint64_t *addr) return -1; } irp->addr += 2; - *addr = addr16; + *addr = extract_signed_integer (buf, 2, byte_order); break; } @@ -3113,66 +3112,66 @@ i386_record_lea_modrm_addr (struct i386_record_s *irp, uint64_t *addr) case 0: regcache_raw_read_unsigned (irp->regcache, irp->regmap[X86_RECORD_REBX_REGNUM], - &addr64); - *addr = (uint32_t) (*addr + addr64); + &offset64); + *addr = (uint32_t) (*addr + offset64); regcache_raw_read_unsigned (irp->regcache, irp->regmap[X86_RECORD_RESI_REGNUM], - &addr64); - *addr = (uint32_t) (*addr + addr64); + &offset64); + *addr = (uint32_t) (*addr + offset64); break; case 1: regcache_raw_read_unsigned (irp->regcache, irp->regmap[X86_RECORD_REBX_REGNUM], - &addr64); - *addr = (uint32_t) (*addr + addr64); + &offset64); + *addr = (uint32_t) (*addr + offset64); regcache_raw_read_unsigned (irp->regcache, irp->regmap[X86_RECORD_REDI_REGNUM], - &addr64); - *addr = (uint32_t) (*addr + addr64); + &offset64); + *addr = (uint32_t) (*addr + offset64); break; case 2: regcache_raw_read_unsigned (irp->regcache, irp->regmap[X86_RECORD_REBP_REGNUM], - &addr64); - *addr = (uint32_t) (*addr + addr64); + &offset64); + *addr = (uint32_t) (*addr + offset64); regcache_raw_read_unsigned (irp->regcache, irp->regmap[X86_RECORD_RESI_REGNUM], - &addr64); - *addr = (uint32_t) (*addr + addr64); + &offset64); + *addr = (uint32_t) (*addr + offset64); break; case 3: regcache_raw_read_unsigned (irp->regcache, irp->regmap[X86_RECORD_REBP_REGNUM], - &addr64); - *addr = (uint32_t) (*addr + addr64); + &offset64); + *addr = (uint32_t) (*addr + offset64); regcache_raw_read_unsigned (irp->regcache, irp->regmap[X86_RECORD_REDI_REGNUM], - &addr64); - *addr = (uint32_t) (*addr + addr64); + &offset64); + *addr = (uint32_t) (*addr + offset64); break; case 4: regcache_raw_read_unsigned (irp->regcache, irp->regmap[X86_RECORD_RESI_REGNUM], - &addr64); - *addr = (uint32_t) (*addr + addr64); + &offset64); + *addr = (uint32_t) (*addr + offset64); break; case 5: regcache_raw_read_unsigned (irp->regcache, irp->regmap[X86_RECORD_REDI_REGNUM], - &addr64); - *addr = (uint32_t) (*addr + addr64); + &offset64); + *addr = (uint32_t) (*addr + offset64); break; case 6: regcache_raw_read_unsigned (irp->regcache, irp->regmap[X86_RECORD_REBP_REGNUM], - &addr64); - *addr = (uint32_t) (*addr + addr64); + &offset64); + *addr = (uint32_t) (*addr + offset64); break; case 7: regcache_raw_read_unsigned (irp->regcache, irp->regmap[X86_RECORD_REBX_REGNUM], - &addr64); - *addr = (uint32_t) (*addr + addr64); + &offset64); + *addr = (uint32_t) (*addr + offset64); break; } *addr &= 0xffff; @@ -3309,11 +3308,13 @@ int i386_process_record (struct gdbarch *gdbarch, struct regcache *regcache, CORE_ADDR input_addr) { + enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); int prefixes = 0; int regnum = 0; uint32_t opcode; uint8_t opcode8; ULONGEST addr; + gdb_byte buf[MAX_REGISTER_SIZE]; struct i386_record_s ir; struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); int rex = 0; @@ -4100,9 +4101,7 @@ i386_process_record (struct gdbarch *gdbarch, struct regcache *regcache, ir.ot = ir.dflag + OT_WORD; if (ir.aflag == 2) { - uint64_t addr64; - - if (target_read_memory (ir.addr, (gdb_byte *) &addr64, 8)) + if (target_read_memory (ir.addr, buf, 8)) { if (record_debug) printf_unfiltered (_("Process record: error reading " @@ -4111,13 +4110,11 @@ i386_process_record (struct gdbarch *gdbarch, struct regcache *regcache, return -1; } ir.addr += 8; - addr = addr64; + addr = extract_unsigned_integer (buf, 8, byte_order); } else if (ir.aflag) { - uint32_t addr32; - - if (target_read_memory (ir.addr, (gdb_byte *) &addr32, 4)) + if (target_read_memory (ir.addr, buf, 4)) { if (record_debug) printf_unfiltered (_("Process record: error reading " @@ -4126,13 +4123,11 @@ i386_process_record (struct gdbarch *gdbarch, struct regcache *regcache, return -1; } ir.addr += 4; - addr = addr32; + addr = extract_unsigned_integer (buf, 4, byte_order); } else { - uint16_t addr16; - - if (target_read_memory (ir.addr, (gdb_byte *) &addr16, 2)) + if (target_read_memory (ir.addr, buf, 2)) { if (record_debug) printf_unfiltered (_("Process record: error reading " @@ -4141,7 +4136,7 @@ i386_process_record (struct gdbarch *gdbarch, struct regcache *regcache, return -1; } ir.addr += 2; - addr = addr16; + addr = extract_unsigned_integer (buf, 2, byte_order); } if (record_arch_list_add_mem (addr, 1 << ir.ot)) return -1; -- 2.7.4