perf tools: Add AVX-512 support to the instruction decoder used by Intel PT

[mirror_ubuntu-artful-kernel.git] / tools / perf / util / intel-pt-decoder / insn.h

diff --git a/tools/perf/util/intel-pt-decoder/insn.h b/tools/perf/util/intel-pt-decoder/insn.h
index dd12da0f459374dfc7f0fde321b1793f061d639f..e23578c7b1be9d56398ccd33a2b3ef28633b4939 100644 (file)
--- a/tools/perf/util/intel-pt-decoder/insn.h
+++ b/tools/perf/util/intel-pt-decoder/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)