diff options
Diffstat (limited to 'gas/config/tc-i386.h')
| -rw-r--r-- | gas/config/tc-i386.h | 20 |
1 files changed, 11 insertions, 9 deletions
diff --git a/gas/config/tc-i386.h b/gas/config/tc-i386.h index d5ba043..61b5bb9 100644 --- a/gas/config/tc-i386.h +++ b/gas/config/tc-i386.h @@ -467,15 +467,17 @@ typedef struct modrm_byte; /* x86-64 extension prefix. */ -typedef struct - { - unsigned int mode64; - unsigned int extX; /* Used to extend modrm reg field. */ - unsigned int extY; /* Used to extend SIB index field. */ - unsigned int extZ; /* Used to extend modrm reg/mem, SIB base, modrm base fields. */ - unsigned int empty; /* Used to old-style byte registers to new style. */ - } -rex_byte; +typedef int rex_byte; +#define REX_OPCODE 0x40 + +/* Indicates 64 bit operand size. */ +#define REX_MODE64 8 +/* High extension to reg field of modrm byte. */ +#define REX_EXTX 4 +/* High extension to SIB index field. */ +#define REX_EXTY 2 +/* High extension to base field of modrm or SIB, or reg field of opcode. */ +#define REX_EXTZ 1 /* 386 opcode byte to code indirect addressing. */ typedef struct |