* config/tc-i386.h (REX_OPCODE): Define.

[deliverable/binutils-gdb.git] / gas / config / tc-i386.h

diff --git a/gas/config/tc-i386.h b/gas/config/tc-i386.h
index d5ba0439b0b7fc8f2cb9955252cb2fe9b038e519..61b5bb909e0dcf24ca1599c3aa475a39174a4591 100644 (file)
--- 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