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-rw-r--r--include/opcode/i386.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/opcode/i386.h b/include/opcode/i386.h
index 58cbf06d4b..8d271bef94 100644
--- a/include/opcode/i386.h
+++ b/include/opcode/i386.h
@@ -77,6 +77,7 @@
#define XACQUIRE_PREFIX_OPCODE 0xf2
#define XRELEASE_PREFIX_OPCODE 0xf3
#define BND_PREFIX_OPCODE 0xf2
+#define NOTRACK_PREFIX_OPCODE 0x3e
#define TWO_BYTE_OPCODE_ESCAPE 0x0f
#define NOP_OPCODE (char) 0x90