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-rw-r--r--src/x86.h17
1 files changed, 11 insertions, 6 deletions
diff --git a/src/x86.h b/src/x86.h
index 52e4f9b..b4df9c8 100644
--- a/src/x86.h
+++ b/src/x86.h
@@ -25,6 +25,9 @@
*/
// XXX: no BOUND (0x62): ambiguous with EVEX prefix - can't be arsed!
+// XXX: no LES (0xC4) or DES (0xC5) either for similar reasons. better to report
+// an unknown instruction than to potentially misinterpret an AVX thing.
+// these are all legacy instructions that won't really be used much anyway.
/* Instruction prefixes: segments */
#define X86_SEG_PREFIXES(X) \
@@ -188,10 +191,6 @@
X(X86_XOREAXI, 0x35) \
X(X86_CMPEAXI, 0x3D) \
X(X86_PUSHIW, 0x68) \
- X(X86_MOVALII, 0xA0) /* From offset (indirect) */ \
- X(X86_MOVEAXII, 0xA1) /* From offset (indirect) */ \
- X(X86_MOVIIAL, 0xA2) /* To offset (indirect) */ \
- X(X86_MOVIIEAX, 0xA3) /* To offset (indirect) */ \
X(X86_TESTEAXI, 0xA9) \
X(X86_MOVEAXI, 0xB8) \
X(X86_MOVECXI, 0xB9) \
@@ -204,6 +203,13 @@
X(X86_CALL, 0xE8) \
X(X86_JMPIW, 0xE9)
+/* Single-byte opcodes with a word-sized immediate operand (indirect) */
+#define X86_OPS_1BYTE_IWI(X) \
+ X(X86_MOVALII, 0xA0) /* From offset (indirect) */ \
+ X(X86_MOVEAXII, 0xA1) /* From offset (indirect) */ \
+ X(X86_MOVIIAL, 0xA2) /* To offset (indirect) */ \
+ X(X86_MOVIIEAX, 0xA3) /* To offset (indirect) */ \
+
/* Single-byte opcodes with 16-bit immediate operands, regardless of prefixes */
#define X86_OPS_1BYTE_I16(X) \
X(X86_RETI16, 0xC2) \
@@ -259,8 +265,6 @@
X(X86_LEA, 0x8D) \
X(X86_MOVSM, 0x8E) /* Store 4 bytes to segment register */ \
X(X86_POPM, 0x8F) \
- X(X86_LES, 0xC4) \
- X(X86_LDS, 0xC5) \
X(X86_SHIFTM18, 0xD0) /* Shift/roll by 1 place */ \
X(X86_SHIFTM1W, 0xD1) /* Shift/roll by 1 place */ \
X(X86_SHIFTMCL8, 0xD2) /* Shift/roll by CL places */ \
@@ -297,6 +301,7 @@
X86_OPS_1BYTE_NO(X) \
X86_OPS_1BYTE_I8(X) \
X86_OPS_1BYTE_IW(X) \
+ X86_OPS_1BYTE_IWI(X) \
X86_OPS_1BYTE_I16(X) \
X86_OPS_1BYTE_MRM(X) \
X86_OPS_1BYTE_MRM_I8(X) \