2007-11-01 H.J. Lu <hongjiu.lu@intel.com>

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

diff --git a/gas/config/tc-i386.h b/gas/config/tc-i386.h
index 78c7ad359502049d7fc1ded7e87735ba6a003c6c..bf27842bee0d0f252170998ca27c85d052b48251 100644 (file)
--- a/gas/config/tc-i386.h
+++ b/gas/config/tc-i386.h
@@ -122,8 +122,9 @@ extern const char *i386_comment_chars;
 #define SHORT_MNEM_SUFFIX 's'
 #define LONG_MNEM_SUFFIX  'l'
 #define QWORD_MNEM_SUFFIX  'q'
-/* Intel Syntax */
-#define LONG_DOUBLE_MNEM_SUFFIX 'x'
+/* Intel Syntax.  Use a non-ascii letter since since it never appears
+   in instructions.  */
+#define LONG_DOUBLE_MNEM_SUFFIX '\1'
 
 #define END_OF_INSN '\0'
 
@@ -153,6 +154,33 @@ modrm_byte;
 /* x86-64 extension prefix.  */
 typedef int rex_byte;
 
+/* The SSE5 instructions have a two bit instruction modifier (OC) that 
+   is stored in two separate bytes in the instruction.  Pick apart OC 
+   into the 2 separate bits for instruction.  */
+#define DREX_OC0(x)    (((x) & 1) != 0)
+#define DREX_OC1(x)    (((x) & 2) != 0)
+
+#define DREX_OC0_MASK  (1 << 3)        /* set OC0 in byte 4 */
+#define DREX_OC1_MASK  (1 << 2)        /* set OC1 in byte 3 */
+
+/* OC mappings */
+#define DREX_XMEM_X1_X2_X2 0   /* 4 op insn, dest = src3, src1 = reg/mem */
+#define DREX_X1_XMEM_X2_X2 1   /* 4 op insn, dest = src3, src2 = reg/mem */
+#define DREX_X1_XMEM_X2_X1 2   /* 4 op insn, dest = src1, src2 = reg/mem */
+#define DREX_X1_X2_XMEM_X1 3   /* 4 op insn, dest = src1, src3 = reg/mem */
+
+#define DREX_XMEM_X1_X2           0    /* 3 op insn, src1 = reg/mem */
+#define DREX_X1_XMEM_X2           1    /* 3 op insn, src1 = reg/mem */
+
+/* Information needed to create the DREX byte in SSE5 instructions.  */
+typedef struct
+{
+  unsigned int reg;            /* register */
+  unsigned int rex;            /* REX flags */
+  unsigned int modrm_reg;      /* which arg goes in the modrm.reg field */
+  unsigned int modrm_regmem;   /* which arg goes in the modrm.regmem field */
+} drex_byte;
+
 /* 386 opcode byte to code indirect addressing.  */
 typedef struct
 {
@@ -245,6 +273,8 @@ extern int tc_i386_fix_adjustable (struct fix *);
 extern int i386_parse_name (char *, expressionS *, char *);
 #define md_parse_name(s, e, m, c) i386_parse_name (s, e, c)
 
+#define md_register_arithmetic 0
+
 extern const struct relax_type md_relax_table[];
 #define TC_GENERIC_RELAX_TABLE md_relax_table