--- np2/i386c/ia32/instructions/system_inst.c	2004/02/04 13:24:35	1.13
+++ np2/i386c/ia32/instructions/system_inst.c	2004/02/18 20:11:37	1.16
@@ -1,4 +1,4 @@
-/*	$Id: system_inst.c,v 1.13 2004/02/04 13:24:35 monaka Exp $	*/
+/*	$Id: system_inst.c,v 1.16 2004/02/18 20:11:37 yui Exp $	*/
 
 /*
  * Copyright (c) 2003 NONAKA Kimihiro
@@ -44,7 +44,7 @@ LGDT_Ms(DWORD op)
 	if (op < 0xc0) {
 		if (!CPU_STAT_PM || !CPU_STAT_VM86 || CPU_STAT_CPL == 0) {
 			CPU_WORKCLOCK(11);
-			madr = get_ea(op);
+			madr = calc_ea_dst(op);
 			limit = cpu_vmemoryread_w(CPU_INST_SEGREG_INDEX, madr);
 			base = cpu_vmemoryread_d(CPU_INST_SEGREG_INDEX, madr + 2);
 			if (!CPU_INST_OP32) {
@@ -79,7 +79,7 @@ SGDT_Ms(DWORD op)
 		if (!CPU_INST_OP32) {
 			base &= 0x00ffffff;
 		}
-		madr = get_ea(op);
+		madr = calc_ea_dst(op);
 		cpu_vmemorywrite_w(CPU_INST_SEGREG_INDEX, madr, limit);
 		cpu_vmemorywrite_d(CPU_INST_SEGREG_INDEX, madr + 2, base);
 		return;
@@ -102,7 +102,7 @@ LLDT_Ew(DWORD op)
 				madr = calc_ea_dst(op);
 				src = cpu_vmemoryread_w(CPU_INST_SEGREG_INDEX, madr);
 			}
-			load_ldtr(src, GP_EXCEPTION);
+			load_ldtr((WORD)src, GP_EXCEPTION);
 			return;
 		}
 		VERBOSE(("LLDT: CPL(%d) != 0", CPU_STAT_CPL));
@@ -153,7 +153,7 @@ LTR_Ew(DWORD op)
 				madr = calc_ea_dst(op);
 				src = cpu_vmemoryread_w(CPU_INST_SEGREG_INDEX, madr);
 			}
-			load_tr(src);
+			load_tr((WORD)src);
 			return;
 		}
 		VERBOSE(("LTR: CPL(%d) != 0", CPU_STAT_CPL));
@@ -199,7 +199,7 @@ LIDT_Ms(DWORD op)
 	if (op < 0xc0) {
 		if (!CPU_STAT_PM || !CPU_STAT_VM86 || CPU_STAT_CPL == 0) {
 			CPU_WORKCLOCK(11);
-			madr = get_ea(op);
+			madr = calc_ea_dst(op);
 			limit = cpu_vmemoryread_w(CPU_INST_SEGREG_INDEX, madr);
 			base = cpu_vmemoryread_d(CPU_INST_SEGREG_INDEX, madr + 2);
 			if (!CPU_INST_OP32) {
@@ -234,7 +234,7 @@ SIDT_Ms(DWORD op)
 		if (!CPU_INST_OP32) {
 			base &= 0x00ffffff;
 		}
-		madr = get_ea(op);
+		madr = calc_ea_dst(op);
 		cpu_vmemorywrite_w(CPU_INST_SEGREG_INDEX, madr, limit);
 		cpu_vmemorywrite_d(CPU_INST_SEGREG_INDEX, madr + 2, base);
 		return;
@@ -314,6 +314,8 @@ MOV_CdRd(void)
 					change_pm(0);
 				}
 			}
+
+			CPU_STAT_WP = (BYTE)((CPU_CR0 & CPU_CR0_WP) >> 12);
 			break;
 
 		case 2: /* CR2 */
@@ -493,7 +495,7 @@ ARPL_EwGw(void)
 				CPU_FLAGL |= Z_FLAG;
 				dst &= ~3;
 				dst |= (src & 3);
-				*(reg16_b20[op]) = dst;
+				*(reg16_b20[op]) = (WORD)dst;
 			} else {
 				CPU_FLAGL &= ~Z_FLAG;
 			}
@@ -505,7 +507,7 @@ ARPL_EwGw(void)
 				CPU_FLAGL |= Z_FLAG;
 				dst &= ~3;
 				dst |= (src & 3);
-				cpu_vmemorywrite_w(CPU_INST_SEGREG_INDEX, madr, dst);
+				cpu_vmemorywrite_w(CPU_INST_SEGREG_INDEX, madr, (WORD)dst);
 			} else {
 				CPU_FLAGL &= ~Z_FLAG;
 			}
@@ -526,27 +528,30 @@ LAR_GwEw(void)
 	WORD *out;
 	DWORD op;
 	DWORD h;
-	int user_mode;
 	int rv;
 	WORD selector;
 
 	if (CPU_STAT_PM && !CPU_STAT_VM86) {
 		PREPART_REG16_EA(op, selector, out, 5, 11);
 
-		user_mode = CPU_IS_USER_MODE();
-		rv = parse_selector(&sel, selector, user_mode);
+		rv = parse_selector(&sel, selector);
 		if (rv < 0) {
 			CPU_FLAGL &= ~Z_FLAG;
 			return;
 		}
 
 		if (sel.desc.s) {
-			if (!(sel.desc.u.seg.c && !sel.desc.u.seg.ec) &&
-			    ((sel.desc.dpl < CPU_STAT_CPL) || (sel.desc.dpl < sel.rpl))) {
-				CPU_FLAGL &= ~Z_FLAG;
-				return;
+			/* code or data segment */
+			if (!(sel.desc.u.seg.c && sel.desc.u.seg.ec)) {
+				/* not conforming code segment */
+				if ((sel.desc.dpl < CPU_STAT_CPL)
+				 || (sel.desc.dpl < sel.rpl)) {
+					CPU_FLAGL &= ~Z_FLAG;
+					return;
+				}
 			}
 		} else {
+			/* system segment */
 			switch (sel.desc.type) {
 			case CPU_SYSDESC_TYPE_TSS_16:
 			case CPU_SYSDESC_TYPE_LDT:
@@ -564,8 +569,8 @@ LAR_GwEw(void)
 			}
 		}
 
-		h = cpu_lmemoryread_d(sel.addr + 4, user_mode);
-		*out = h & 0xff00;
+		h = cpu_kmemoryread_d(sel.addr + 4);
+		*out = h & 0xff00;							// read DWORD?
 		CPU_FLAGL |= Z_FLAG;
 		return;
 	}
@@ -580,27 +585,30 @@ LAR_GdEw(void)
 	DWORD *out;
 	DWORD op;
 	DWORD h;
-	int user_mode;
 	int rv;
 	WORD selector;
 
 	if (CPU_STAT_PM && !CPU_STAT_VM86) {
-		PREPART_REG32_EA(op, selector, out, 5, 11);
+		PREPART_REG32_EA(op, selector, out, 5, 11);		// EA16?
 
-		user_mode = CPU_IS_USER_MODE();
-		rv = parse_selector(&sel, selector, user_mode);
+		rv = parse_selector(&sel, selector);
 		if (rv < 0) {
 			CPU_FLAGL &= ~Z_FLAG;
 			return;
 		}
 
 		if (sel.desc.s) {
-			if (!(sel.desc.u.seg.c && !sel.desc.u.seg.ec)
-			 && ((sel.desc.dpl < CPU_STAT_CPL) || (sel.desc.dpl < sel.rpl))) {
-				CPU_FLAGL &= ~Z_FLAG;
-				return;
+			/* code or data segment */
+			if (!(sel.desc.u.seg.c && sel.desc.u.seg.ec)) {
+				/* not conforming code segment */
+				if ((sel.desc.dpl < CPU_STAT_CPL)
+				 || (sel.desc.dpl < sel.rpl)) {
+					CPU_FLAGL &= ~Z_FLAG;
+					return;
+				}
 			}
 		} else {
+			/* system segment */
 			switch (sel.desc.type) {
 			case CPU_SYSDESC_TYPE_TSS_16:
 			case CPU_SYSDESC_TYPE_LDT:
@@ -618,7 +626,7 @@ LAR_GdEw(void)
 			}
 		}
 
-		h = cpu_lmemoryread_d(sel.addr + 4, user_mode);
+		h = cpu_kmemoryread_d(sel.addr + 4);
 		*out = h & 0x00ffff00;	/* 0x00fxff00, x? */
 		CPU_FLAGL |= Z_FLAG;
 		return;
@@ -639,19 +647,24 @@ LSL_GwEw(void)
 	if (CPU_STAT_PM && !CPU_STAT_VM86) {
 		PREPART_REG16_EA(op, selector, out, 5, 11);
 
-		rv = parse_selector(&sel, selector, CPU_IS_USER_MODE());
+		rv = parse_selector(&sel, selector);
 		if (rv < 0) {
 			CPU_FLAGL &= ~Z_FLAG;
 			return;
 		}
 
 		if (sel.desc.s) {
-			if (!(sel.desc.u.seg.c && !sel.desc.u.seg.ec)
-			 && ((sel.desc.dpl < CPU_STAT_CPL) || (sel.desc.dpl < sel.rpl))) {
-				CPU_FLAGL &= ~Z_FLAG;
-				return;
+			/* code or data segment */
+			if (!(sel.desc.u.seg.c && sel.desc.u.seg.ec)) {
+				/* not conforming code segment */
+				if ((sel.desc.dpl < CPU_STAT_CPL)
+				 || (sel.desc.dpl < sel.rpl)) {
+					CPU_FLAGL &= ~Z_FLAG;
+					return;
+				}
 			}
 		} else {
+			/* system segment */
 			switch (sel.desc.type) {
 			case CPU_SYSDESC_TYPE_TSS_16:
 			case CPU_SYSDESC_TYPE_LDT:
@@ -684,21 +697,26 @@ LSL_GdEw(void)
 	WORD selector;
 
 	if (CPU_STAT_PM && !CPU_STAT_VM86) {
-		PREPART_REG32_EA(op, selector, out, 5, 11);
+		PREPART_REG32_EA(op, selector, out, 5, 11);		// EA16?
 
-		rv = parse_selector(&sel, selector, CPU_IS_USER_MODE());
+		rv = parse_selector(&sel, selector);
 		if (rv < 0) {
 			CPU_FLAGL &= ~Z_FLAG;
 			return;
 		}
 
 		if (sel.desc.s) {
-			if (!(sel.desc.u.seg.c && !sel.desc.u.seg.ec)
-			 && ((CPU_STAT_CPL > sel.desc.dpl) || (sel.rpl > sel.desc.dpl))) {
-				CPU_FLAGL &= ~Z_FLAG;
-				return;
+			/* code or data segment */
+			if (!(sel.desc.u.seg.c && sel.desc.u.seg.ec)) {
+				/* not conforming code segment */
+				if ((sel.desc.dpl < CPU_STAT_CPL)
+				 || (sel.desc.dpl < sel.rpl)) {
+					CPU_FLAGL &= ~Z_FLAG;
+					return;
+				}
 			}
 		} else {
+			/* system segment */
 			switch (sel.desc.type) {
 			case CPU_SYSDESC_TYPE_TSS_16:
 			case CPU_SYSDESC_TYPE_LDT:
@@ -739,7 +757,7 @@ VERR_Ew(DWORD op)
 			selector = cpu_vmemoryread_w(CPU_INST_SEGREG_INDEX, madr);
 		}
 
-		rv = parse_selector(&sel, selector, CPU_IS_USER_MODE());
+		rv = parse_selector(&sel, selector);
 		if (rv < 0) {
 			CPU_FLAGL &= ~Z_FLAG;
 			return;
@@ -750,17 +768,21 @@ VERR_Ew(DWORD op)
 			CPU_FLAGL &= ~Z_FLAG;
 			return;
 		}
-		/* non-conforming code segment && (CPL > DPL || RPL > DPL) */
-		if ((sel.desc.u.seg.c && !sel.desc.u.seg.ec)
-		 && ((CPU_STAT_CPL > sel.desc.dpl) || (sel.rpl > sel.desc.dpl))) {
-			CPU_FLAGL &= ~Z_FLAG;
-			return;
+		/* not conforming code segment && (CPL > DPL || RPL > DPL) */
+		if (!(sel.desc.u.seg.c && sel.desc.u.seg.ec)) {
+			/* not conforming code segment */
+			if ((sel.desc.dpl < CPU_STAT_CPL)
+			 || (sel.desc.dpl < sel.rpl)) {
+				CPU_FLAGL &= ~Z_FLAG;
+				return;
+			}
 		}
 		/* code segment is not readable */
 		if (sel.desc.u.seg.c && !sel.desc.u.seg.wr) {
 			CPU_FLAGL &= ~Z_FLAG;
 			return;
 		}
+
 		CPU_FLAGL |= Z_FLAG;
 		return;
 	}
@@ -786,7 +808,7 @@ VERW_Ew(DWORD op)
 			selector = cpu_vmemoryread_w(CPU_INST_SEGREG_INDEX, madr);
 		}
 
-		rv = parse_selector(&sel, selector, CPU_IS_USER_MODE());
+		rv = parse_selector(&sel, selector);
 		if (rv < 0) {
 			CPU_FLAGL &= ~Z_FLAG;
 			return;
@@ -807,6 +829,7 @@ VERW_Ew(DWORD op)
 			CPU_FLAGL &= ~Z_FLAG;
 			return;
 		}
+
 		CPU_FLAGL |= Z_FLAG;
 		return;
 	}
@@ -864,7 +887,7 @@ INVLPG(DWORD op)
 
 	if (op < 0xc0) {
 		CPU_WORKCLOCK(11);
-		madr = get_ea(op);
+		madr = calc_ea_dst(op);
 		tlb_flush_page(madr);
 		return;
 	}
@@ -889,6 +912,7 @@ HLT(void)
 
 	CPU_HALT();
 	CPU_EIP--;
+	CPU_STAT_HLT = 1;
 }
 
 void