diff --git a/src/arch/i386.ins b/src/arch/i386.ins
index 1022e0d..505efdd 100644
--- a/src/arch/i386.ins
+++ b/src/arch/i386.ins
@@ -415,10 +415,27 @@
 { "fclex",	0x9bdbe2,	OP3F, AOT_NONE,   AOT_NONE,  AOT_NONE	},
 /* FCMOVcc								*/
 /* FIXME implement */
+/* FFREE	0xddc0 + i	2					*/
+{ "ffree",	0xddc0,		OP2F, OP_st0,     AOT_NONE,  AOT_NONE	},
+{ "ffree",	0xddc1,		OP2F, OP_st1,     AOT_NONE,  AOT_NONE	},
+{ "ffree",	0xddc2,		OP2F, OP_st2,     AOT_NONE,  AOT_NONE	},
+{ "ffree",	0xddc3,		OP2F, OP_st3,     AOT_NONE,  AOT_NONE	},
+{ "ffree",	0xddc4,		OP2F, OP_st4,     AOT_NONE,  AOT_NONE	},
+{ "ffree",	0xddc5,		OP2F, OP_st5,     AOT_NONE,  AOT_NONE	},
+{ "ffree",	0xddc6,		OP2F, OP_st6,     AOT_NONE,  AOT_NONE	},
+{ "ffree",	0xddc7,		OP2F, OP_st7,     AOT_NONE,  AOT_NONE	},
 /* FIADD	0xda /0		1     m32int				*/
 /* FIXME implement */
 /* FIADD	0xde /0		1     m64int				*/
 /* FIXME implement */
+/* FILD		0xdf /0		1     m16int				*/
+/* FIXME implement */
+/* FILD		0xdb /0		1     m32int				*/
+/* FIXME implement */
+/* FILD		0xdf /5		1     m64int				*/
+/* FIXME implement */
+/* FINCSTP	0xd9f7		2					*/
+{ "fincstp",	0xd9f7,		OP3F, AOT_NONE,   AOT_NONE,  AOT_NONE	},
 /* FINIT	0x9bdbe3	3					*/
 { "finit",	0x9bdbe3,	OP3F, AOT_NONE,   AOT_NONE,  AOT_NONE	},
 /* FIST		0xdf /2		1     m16int				*/
diff --git a/test/i386.S b/test/i386.S
index c06cfbb..a6ee527 100644
--- a/test/i386.S
+++ b/test/i386.S
@@ -142,6 +142,14 @@
 	faddp	%st7, %st0
 	fchs
 	fclex
+	ffree	%st0				/* dd c0		*/
+	ffree	%st1				/* dd c1		*/
+	ffree	%st2				/* dd c2		*/
+	ffree	%st3				/* dd c3		*/
+	ffree	%st4				/* dd c4		*/
+	ffree	%st5				/* dd c5		*/
+	ffree	%st6				/* dd c6		*/
+	ffree	%st7				/* dd c7		*/
 	finit
 	fld	%st0				/* d9 c0		*/
 	fld	%st1