diff options
Diffstat (limited to 'include/opcode/i386.h')
| -rw-r--r-- | include/opcode/i386.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/opcode/i386.h b/include/opcode/i386.h index dec7652..2823d02 100644 --- a/include/opcode/i386.h +++ b/include/opcode/i386.h @@ -112,9 +112,13 @@ /* x86-64 extension prefix. */ #define REX_OPCODE 0x40 +#define REX2_OPCODE 0xd5 + /* Non-zero if OPCODE is the rex prefix. */ #define REX_PREFIX_P(opcode) (((opcode) & 0xf0) == REX_OPCODE) +/* M0 in rex2 prefix represents map0 or map1. */ +#define REX2_M 0x8 /* Indicates 64 bit operand size. */ #define REX_W 8 /* High extension to reg field of modrm byte. */ |