--- np2/i386c/ia32/instructions/fpu/fpdummy.c	2004/02/05 16:43:45	1.2
+++ np2/i386c/ia32/instructions/fpu/fpdummy.c	2012/01/29 03:22:24	1.12
@@ -1,23 +1,142 @@
-/*	$Id: fpdummy.c,v 1.2 2004/02/05 16:43:45 monaka Exp $	*/
-
 #include "compiler.h"
 #include "cpu.h"
 #include "ia32.mcr"
+#include "fp.h"
 
 
 void
-FWAIT(void)
+ESC0(void)
 {
+	UINT32 op, madr;
+
+	GET_PCBYTE(op);
+	TRACEOUT(("use FPU d8 %.2x", op));
+	if (op >= 0xc0) {
+		EXCEPTION(NM_EXCEPTION, 0);
+	} else {
+		madr = calc_ea_dst(op);
+		EXCEPTION(NM_EXCEPTION, 0);
+	}
 }
 
 void
-ESC0(void)
+ESC1(void)
+{
+	UINT32 op, madr;
+
+	GET_PCBYTE(op);
+	TRACEOUT(("use FPU d9 %.2x", op));
+	if (op >= 0xc0) {
+		EXCEPTION(NM_EXCEPTION, 0);
+	} else {
+		madr = calc_ea_dst(op);
+		if ((op & 0x38) == 0x38) {
+			TRACEOUT(("FSTCW"));
+			cpu_vmemorywrite_w(CPU_INST_SEGREG_INDEX, madr, 0xffff);
+		}
+	}
+}
+
+void
+ESC2(void)
+{
+	UINT32 op, madr;
+
+	GET_PCBYTE(op);
+	TRACEOUT(("use FPU da %.2x", op));
+	if (op >= 0xc0) {
+		EXCEPTION(NM_EXCEPTION, 0);
+	} else {
+		madr = calc_ea_dst(op);
+		EXCEPTION(NM_EXCEPTION, 0);
+	}
+}
+
+void
+ESC3(void)
+{
+	UINT32 op, madr;
+
+	GET_PCBYTE(op);
+	TRACEOUT(("use FPU db %.2x", op));
+	if (op >= 0xc0) {
+		if (op != 0xe3) {
+			EXCEPTION(NM_EXCEPTION, 0);
+		}
+		/* FNINIT */
+		(void)madr;
+	} else {
+		madr = calc_ea_dst(op);
+		EXCEPTION(NM_EXCEPTION, 0);
+	}
+}
+
+void
+ESC4(void)
+{
+	UINT32 op, madr;
+
+	GET_PCBYTE(op);
+	TRACEOUT(("use FPU dc %.2x", op));
+	if (op >= 0xc0) {
+		EXCEPTION(NM_EXCEPTION, 0);
+	} else {
+		madr = calc_ea_dst(op);
+		EXCEPTION(NM_EXCEPTION, 0);
+	}
+}
+
+void
+ESC5(void)
+{
+	UINT32 op, madr;
+
+	GET_PCBYTE(op);
+	TRACEOUT(("use FPU dd %.2x", op));
+	if (op >= 0xc0) {
+		EXCEPTION(NM_EXCEPTION, 0);
+	} else {
+		madr = calc_ea_dst(op);
+		if (((op >> 3) & 7) != 7) {
+			EXCEPTION(NM_EXCEPTION, 0);
+		}
+		/* FSTSW */
+		TRACEOUT(("FSTSW"));
+		cpu_vmemorywrite_w(CPU_INST_SEGREG_INDEX, madr, 0xffff);
+	}
+}
+
+void
+ESC6(void)
+{
+	UINT32 op, madr;
+
+	GET_PCBYTE(op);
+	TRACEOUT(("use FPU de %.2x", op));
+	if (op >= 0xc0) {
+		EXCEPTION(NM_EXCEPTION, 0);
+	} else {
+		madr = calc_ea_dst(op);
+		EXCEPTION(NM_EXCEPTION, 0);
+	}
+}
+
+void
+ESC7(void)
 {
-	DWORD op, madr;
+	UINT32 op, madr;
 
 	GET_PCBYTE(op);
+	TRACEOUT(("use FPU df %.2x", op));
 	if (op >= 0xc0) {
+		if (op != 0xe0) {
+			EXCEPTION(NM_EXCEPTION, 0);
+		}
+		/* FSTSW AX */
+		TRACEOUT(("FSTSW AX"));
+		CPU_AX = 0xffff;
 	} else {
 		madr = calc_ea_dst(op);
+		EXCEPTION(NM_EXCEPTION, 0);
 	}
 }