diff --git a/src/arch/i386.ins b/src/arch/i386.ins
index 9183bcd..2f59ee0 100644
--- a/src/arch/i386.ins
+++ b/src/arch/i386.ins
@@ -586,6 +586,35 @@
 { "fnop",	0xd9d0,		OP2F, AOT_NONE,   AOT_NONE,  AOT_NONE	},
 /* FWAIT	0x9b		1					*/
 { "fwait",	0x9b,		OP1F, AOT_NONE,   AOT_NONE,  AOT_NONE	},
+/* LOCK		0xf0		1					*/
+{ "lock",	0xf0,		OP1F, AOT_NONE,   AOT_NONE,  AOT_NONE	},
+/* LODSB	0xac		1					*/
+{ "lodsb",	0xac,		OP1F, AOT_NONE,   AOT_NONE,  AOT_NONE	},
+#ifdef ARCH_i386_real
+/* LODSW	0xad		1					*/
+{ "lodsw",	0xad,		OP1F, AOT_NONE,   AOT_NONE,  AOT_NONE	},
+#else
+/* LODSD	0xad		1					*/
+{ "lodsd",	0xad,		OP1F, AOT_NONE,   AOT_NONE,  AOT_NONE	},
+#endif
+/* LOOP		0xe2		1     rel8				*/
+{ "loop",	0xe2,		OP1F, OP_S8,      AOT_NONE,  AOT_NONE	},
+/* LOOPE	0xe1		1     rel8				*/
+{ "loope",	0xe1,		OP1F, OP_S8,      AOT_NONE,  AOT_NONE	},
+/* LOOPNE	0xe0		1     rel8				*/
+{ "loopne",	0xe0,		OP1F, OP_S8,      AOT_NONE,  AOT_NONE	},
+/* LOOPNZ	0xe0		1     rel8				*/
+{ "loopnz",	0xe0,		OP1F, OP_S8,      AOT_NONE,  AOT_NONE	},
+/* LOOPZ	0xe1		1     rel8				*/
+{ "loopz",	0xe1,		OP1F, OP_S8,      AOT_NONE,  AOT_NONE	},
+/* MOV		0x0f20 /r	2     r32         cr0-cr4		*/
+/* FIXME implement */
+/* MOV		0x0f22 /r	2     cr0-cr4     r32			*/
+/* FIXME implement */
+/* MOV		0x0f21 /r	2     r32         dr0-dr7		*/
+/* FIXME implement */
+/* MOV		0x0f23 /r	2     dr0-dr7     r32			*/
+/* FIXME implement */
 /* MOVSB	0xa4		1					*/
 { "movsb",	0xa4,		OP1F, AOT_NONE,   AOT_NONE,  AOT_NONE	},
 #ifdef ARCH_i386_real
diff --git a/test/i386.S b/test/i386.S
index 5b16e73..4b7641e 100644
--- a/test/i386.S
+++ b/test/i386.S
@@ -240,6 +240,14 @@
 	fnclex
 	fninit
 	fwait
+	lock
+	lodsb					/* ac			*/
+	lodsd					/* ad			*/
+	loop	$0x41
+	loope	$0x41
+	loopne	$0x41
+	loopnz	$0x41
+	loopz	$0x41
 	nop					/* 90			*/
 	movsb
 	movsd