diff --git a/gen/gen_code.cpp b/gen/gen_code.cpp
index 3af1a06..dcb6f56 100644
--- a/gen/gen_code.cpp
+++ b/gen/gen_code.cpp
@@ -633,6 +633,7 @@
 			{ "cmpsb", 0xA6 },
 			{ "cmpsw", 0x66, 0xA7 },
 			{ "cmpsd", 0xA7 },
+			{ "int3", 0xCC },
 			{ "scasb", 0xAE },
 			{ "scasw", 0x66, 0xAF },
 			{ "scasd", 0xAF },
@@ -728,6 +729,7 @@
 			{ "fyl2xp1", 0xD9, 0xF9 },
 		};
 		putGeneric(tbl, NUM_OF_ARRAY(tbl));
+		puts("void int_(uint8 x) { db(0xCD); db(x); }");
 	}
 	{
 		const struct Tbl {
@@ -1676,6 +1678,7 @@
 		{ "aas", 0x3F },
 		{ "daa", 0x27 },
 		{ "das", 0x2F },
+		{ "into", 0xCE },
 		{ "popad", 0x61 },
 		{ "popfd", 0x9D },
 		{ "pusha", 0x60 },
diff --git a/test/make_nm.cpp b/test/make_nm.cpp
index 8df5092..956c20b 100644
--- a/test/make_nm.cpp
+++ b/test/make_nm.cpp
@@ -473,6 +473,7 @@
 			"aas",
 			"daa",
 			"das",
+			"into",
 			"popad",
 			"popfd",
 			"pusha",
@@ -497,6 +498,7 @@
 			"cmpsb",
 			"cmpsw",
 			"cmpsd",
+			"int3",
 			"movsb",
 			"movsw",
 			"movsd",
@@ -598,6 +600,7 @@
 		put("fldenv", MEM);
 		put("fstcw", MEM);
 		put("fnstcw", MEM);
+		put(isXbyak_ ? "int_" : "int", IMM8);
 	}
 	void putJmp() const
 	{
diff --git a/xbyak/xbyak_mnemonic.h b/xbyak/xbyak_mnemonic.h
index 5d70295..a3ffb78 100644
--- a/xbyak/xbyak_mnemonic.h
+++ b/xbyak/xbyak_mnemonic.h
@@ -311,6 +311,8 @@
 void imul(const Operand& op) { opR_ModM(op, 0, 5, 0xF6); }
 void inc(const Operand& op) { opIncDec(op, 0x40, 0); }
 void insertps(const Xmm& xmm, const Operand& op, uint8 imm) { opGen(xmm, op, 0x21, 0x66, isXMM_XMMorMEM, imm, 0x3A); }
+void int3() { db(0xCC); }
+void int_(uint8 x) { db(0xCD); db(x); }
 void ja(const Label& label, LabelType type = T_AUTO) { opJmp(label, type, 0x77, 0x87, 0x0F); }//-V524
 void ja(const char *label, LabelType type = T_AUTO) { ja(std::string(label), type); }//-V524
 void ja(const void *addr) { opJmpAbs(addr, T_NEAR, 0x77, 0x87, 0x0F); }//-V524
@@ -1589,6 +1591,7 @@
 void aas() { db(0x3F); }
 void daa() { db(0x27); }
 void das() { db(0x2F); }
+void into() { db(0xCE); }
 void popad() { db(0x61); }
 void popfd() { db(0x9D); }
 void pusha() { db(0x60); }