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Diffstat (limited to 'arch/x86/include/asm/insn.h')
-rw-r--r--arch/x86/include/asm/insn.h12
1 files changed, 11 insertions, 1 deletions
diff --git a/arch/x86/include/asm/insn.h b/arch/x86/include/asm/insn.h
index e7814b74caf8..b3e32b010ab1 100644
--- a/arch/x86/include/asm/insn.h
+++ b/arch/x86/include/asm/insn.h
@@ -91,6 +91,7 @@ struct insn {
#define X86_VEX_B(vex) ((vex) & 0x20) /* VEX3 Byte1 */
#define X86_VEX_L(vex) ((vex) & 0x04) /* VEX3 Byte2, VEX2 Byte1 */
/* VEX bit fields */
+#define X86_EVEX_M(vex) ((vex) & 0x03) /* EVEX Byte1 */
#define X86_VEX3_M(vex) ((vex) & 0x1f) /* VEX3 Byte1 */
#define X86_VEX2_M 1 /* VEX2.M always 1 */
#define X86_VEX_V(vex) (((vex) & 0x78) >> 3) /* VEX3 Byte2, VEX2 Byte1 */
@@ -133,6 +134,13 @@ static inline int insn_is_avx(struct insn *insn)
return (insn->vex_prefix.value != 0);
}
+static inline int insn_is_evex(struct insn *insn)
+{
+ if (!insn->prefixes.got)
+ insn_get_prefixes(insn);
+ return (insn->vex_prefix.nbytes == 4);
+}
+
/* Ensure this instruction is decoded completely */
static inline int insn_complete(struct insn *insn)
{
@@ -144,8 +152,10 @@ static inline insn_byte_t insn_vex_m_bits(struct insn *insn)
{
if (insn->vex_prefix.nbytes == 2) /* 2 bytes VEX */
return X86_VEX2_M;
- else
+ else if (insn->vex_prefix.nbytes == 3) /* 3 bytes VEX */
return X86_VEX3_M(insn->vex_prefix.bytes[1]);
+ else /* EVEX */
+ return X86_EVEX_M(insn->vex_prefix.bytes[1]);
}
static inline insn_byte_t insn_vex_p_bits(struct insn *insn)