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Diffstat (limited to 'arch/x86/include/asm/insn.h')
-rw-r--r--arch/x86/include/asm/insn.h32
1 files changed, 28 insertions, 4 deletions
diff --git a/arch/x86/include/asm/insn.h b/arch/x86/include/asm/insn.h
index 1b29f58f73..7152ea809e 100644
--- a/arch/x86/include/asm/insn.h
+++ b/arch/x86/include/asm/insn.h
@@ -112,10 +112,15 @@ struct insn {
#define X86_SIB_INDEX(sib) (((sib) & 0x38) >> 3)
#define X86_SIB_BASE(sib) ((sib) & 0x07)
-#define X86_REX_W(rex) ((rex) & 8)
-#define X86_REX_R(rex) ((rex) & 4)
-#define X86_REX_X(rex) ((rex) & 2)
-#define X86_REX_B(rex) ((rex) & 1)
+#define X86_REX2_M(rex) ((rex) & 0x80) /* REX2 M0 */
+#define X86_REX2_R(rex) ((rex) & 0x40) /* REX2 R4 */
+#define X86_REX2_X(rex) ((rex) & 0x20) /* REX2 X4 */
+#define X86_REX2_B(rex) ((rex) & 0x10) /* REX2 B4 */
+
+#define X86_REX_W(rex) ((rex) & 8) /* REX or REX2 W */
+#define X86_REX_R(rex) ((rex) & 4) /* REX or REX2 R3 */
+#define X86_REX_X(rex) ((rex) & 2) /* REX or REX2 X3 */
+#define X86_REX_B(rex) ((rex) & 1) /* REX or REX2 B3 */
/* VEX bit flags */
#define X86_VEX_W(vex) ((vex) & 0x80) /* VEX3 Byte2 */
@@ -161,6 +166,18 @@ static inline void insn_get_attribute(struct insn *insn)
/* Instruction uses RIP-relative addressing */
extern int insn_rip_relative(struct insn *insn);
+static inline int insn_is_rex2(struct insn *insn)
+{
+ if (!insn->prefixes.got)
+ insn_get_prefixes(insn);
+ return insn->rex_prefix.nbytes == 2;
+}
+
+static inline insn_byte_t insn_rex2_m_bit(struct insn *insn)
+{
+ return X86_REX2_M(insn->rex_prefix.bytes[1]);
+}
+
static inline int insn_is_avx(struct insn *insn)
{
if (!insn->prefixes.got)
@@ -198,6 +215,13 @@ static inline insn_byte_t insn_vex_p_bits(struct insn *insn)
return X86_VEX_P(insn->vex_prefix.bytes[2]);
}
+static inline insn_byte_t insn_vex_w_bit(struct insn *insn)
+{
+ if (insn->vex_prefix.nbytes < 3)
+ return 0;
+ return X86_VEX_W(insn->vex_prefix.bytes[2]);
+}
+
/* Get the last prefix id from last prefix or VEX prefix */
static inline int insn_last_prefix_id(struct insn *insn)
{