diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/opcode/ChangeLog | 9 | ||||
| -rw-r--r-- | include/opcode/i386.h | 26 |
2 files changed, 34 insertions, 1 deletions
diff --git a/include/opcode/ChangeLog b/include/opcode/ChangeLog index 389bd91..c8c5ef6 100644 --- a/include/opcode/ChangeLog +++ b/include/opcode/ChangeLog @@ -1,3 +1,12 @@ +2009-01-28 Doug Evans <dje@google.com> + + * opcode/i386.h: Add multiple inclusion protection. + (EAX_REG_NUM,ECX_REG_NUM,EDX_REGNUM,EBX_REG_NUM,ESI_REG_NUM) + (EDI_REG_NUM): New macros. + (MODRM_MOD_FIELD,MODRM_REG_FIELD,MODRM_RM_FIELD): New macros. + (SIB_SCALE_FIELD,SIB_INDEX_FIELD,SIB_BASE_FIELD): New macros. + (REG_PREFIX_P): New macro. + 2009-01-09 Peter Bergner <bergner@vnet.ibm.com> * ppc.h (struct powerpc_opcode): New field "deprecated". diff --git a/include/opcode/i386.h b/include/opcode/i386.h index f59eeea..4311cd6 100644 --- a/include/opcode/i386.h +++ b/include/opcode/i386.h @@ -35,6 +35,9 @@ The affected opcode map is dceX, dcfX, deeX, defX. */ +#ifndef OPCODE_I386_H +#define OPCODE_I386_H + #ifndef SYSV386_COMPAT /* Set non-zero for broken, compatible instructions. Set to zero for non-broken opcodes at your peril. gcc generates SystemV/386 @@ -72,8 +75,14 @@ #define NOP_OPCODE (char) 0x90 /* register numbers */ -#define EBP_REG_NUM 5 +#define EAX_REG_NUM 0 +#define ECX_REG_NUM 1 +#define EDX_REG_NUM 2 +#define EBX_REG_NUM 3 #define ESP_REG_NUM 4 +#define EBP_REG_NUM 5 +#define ESI_REG_NUM 6 +#define EDI_REG_NUM 7 /* modrm_byte.regmem for twobyte escape */ #define ESCAPE_TO_TWO_BYTE_ADDRESSING ESP_REG_NUM @@ -87,9 +96,22 @@ #define REGMEM_FIELD_HAS_REG 0x3/* always = 0x3 */ #define REGMEM_FIELD_HAS_MEM (~REGMEM_FIELD_HAS_REG) +/* Extract fields from the mod/rm byte. */ +#define MODRM_MOD_FIELD(modrm) (((modrm) >> 6) & 3) +#define MODRM_REG_FIELD(modrm) (((modrm) >> 3) & 7) +#define MODRM_RM_FIELD(modrm) (((modrm) >> 0) & 7) + +/* Extract fields from the sib byte. */ +#define SIB_SCALE_FIELD(sib) (((sib) >> 6) & 3) +#define SIB_INDEX_FIELD(sib) (((sib) >> 3) & 7) +#define SIB_BASE_FIELD(sib) (((sib) >> 0) & 7) + /* x86-64 extension prefix. */ #define REX_OPCODE 0x40 +/* Non-zero if OPCODE is the rex prefix. */ +#define REX_PREFIX_P(opcode) (((opcode) & 0xf0) == REX_OPCODE) + /* Indicates 64 bit operand size. */ #define REX_W 8 /* High extension to reg field of modrm byte. */ @@ -113,3 +135,5 @@ /* max size of register name in insn mnemonics. */ #define MAX_REG_NAME_SIZE 8 + +#endif /* OPCODE_I386_H */ |