diff --git a/sys/pc98/i386/machdep.c b/sys/pc98/i386/machdep.c
index 792d46f7dd1..4e5f055b199 100644
--- a/sys/pc98/i386/machdep.c
+++ b/sys/pc98/i386/machdep.c
@@ -35,7 +35,7 @@
  * SUCH DAMAGE.
  *
  *	from: @(#)machdep.c	7.4 (Berkeley) 6/3/91
- *	$Id: machdep.c,v 1.49 1997/08/06 09:43:45 kato Exp $
+ *	$Id: machdep.c,v 1.50 1997/08/09 01:56:34 kato Exp $
  */
 
 #include "apm.h"
@@ -683,7 +683,6 @@ sigreturn(p, uap, retval)
 		 * hardware check for invalid selectors, excess privilege in
 		 * other selectors, invalid %eip's and invalid %esp's.
 		 */
-#define	CS_SECURE(cs)	(ISPL(cs) == SEL_UPL)
 		if (!CS_SECURE(scp->sc_cs)) {
 #ifdef DEBUG
     			printf("sigreturn: cs = 0x%x\n", scp->sc_cs);
diff --git a/sys/pc98/i386/trap.c b/sys/pc98/i386/trap.c
index eca49a39990..4727c1a0209 100644
--- a/sys/pc98/i386/trap.c
+++ b/sys/pc98/i386/trap.c
@@ -35,7 +35,7 @@
  * SUCH DAMAGE.
  *
  *	from: @(#)trap.c	7.4 (Berkeley) 5/13/91
- *	$Id: trap.c,v 1.28 1997/08/10 10:53:49 kato Exp $
+ *	$Id: trap.c,v 1.29 1997/08/13 11:00:09 kato Exp $
  */
 
 /*
@@ -226,7 +226,7 @@ trap(frame)
 		asm("sti");
 #endif	/* CPU_BUGGY_CYRIX */
 
-        if ((ISPL(frame.tf_cs) == SEL_UPL) || (frame.tf_eflags & PSL_VM)) {
+        if (CS_SECURE(frame.tf_cs) || (frame.tf_eflags & PSL_VM)) {
 		/* user trap */
 
 		sticks = p->p_sticks;
@@ -772,7 +772,7 @@ trap_fatal(frame)
 		printf("\n\nFatal trap %d: %s while in %s mode\n",
 			type, trap_msg[type],
         		frame->tf_eflags & PSL_VM ? "vm86" :
-			ISPL(frame->tf_cs) == SEL_UPL ? "user" : "kernel");
+			CS_SECURE(frame->tf_cs) ? "user" : "kernel");
 #ifdef SMP
 	printf("cpuid = %d\n", cpuid);
 #endif
@@ -785,7 +785,7 @@ trap_fatal(frame)
 	}
 	printf("instruction pointer	= 0x%x:0x%x\n",
 	       frame->tf_cs & 0xffff, frame->tf_eip);
-        if ((ISPL(frame->tf_cs) == SEL_UPL) || (frame->tf_eflags & PSL_VM)) {
+        if (CS_SECURE(frame->tf_cs) || (frame->tf_eflags & PSL_VM)) {
 		ss = frame->tf_ss & 0xffff;
 		esp = frame->tf_esp;
 	} else {
@@ -935,7 +935,7 @@ syscall(frame)
 	u_int code;
 
 	sticks = p->p_sticks;
-	if (ISPL(frame.tf_cs) != SEL_UPL)
+	if (!CS_SECURE(frame.tf_cs))
 		panic("syscall");
 
 	p->p_md.md_regs = &frame;
diff --git a/sys/pc98/pc98/machdep.c b/sys/pc98/pc98/machdep.c
index 792d46f7dd1..4e5f055b199 100644
--- a/sys/pc98/pc98/machdep.c
+++ b/sys/pc98/pc98/machdep.c
@@ -35,7 +35,7 @@
  * SUCH DAMAGE.
  *
  *	from: @(#)machdep.c	7.4 (Berkeley) 6/3/91
- *	$Id: machdep.c,v 1.49 1997/08/06 09:43:45 kato Exp $
+ *	$Id: machdep.c,v 1.50 1997/08/09 01:56:34 kato Exp $
  */
 
 #include "apm.h"
@@ -683,7 +683,6 @@ sigreturn(p, uap, retval)
 		 * hardware check for invalid selectors, excess privilege in
 		 * other selectors, invalid %eip's and invalid %esp's.
 		 */
-#define	CS_SECURE(cs)	(ISPL(cs) == SEL_UPL)
 		if (!CS_SECURE(scp->sc_cs)) {
 #ifdef DEBUG
     			printf("sigreturn: cs = 0x%x\n", scp->sc_cs);
diff --git a/sys/pc98/pc98/npx.c b/sys/pc98/pc98/npx.c
index 8aa2b41b755..6c6a7df19b8 100644
--- a/sys/pc98/pc98/npx.c
+++ b/sys/pc98/pc98/npx.c
@@ -32,7 +32,7 @@
  * SUCH DAMAGE.
  *
  *	from: @(#)npx.c	7.2 (Berkeley) 5/12/91
- *	$Id: npx.c,v 1.24 1997/07/21 13:13:43 kato Exp $
+ *	$Id: npx.c,v 1.25 1997/08/09 01:55:51 kato Exp $
  */
 
 #include "npx.h"
@@ -560,7 +560,7 @@ npxintr(unit)
 	 * Pass exception to process.
 	 */
 	frame = (struct intrframe *)&unit;	/* XXX */
-	if ((ISPL(frame->if_cs) == SEL_UPL) || (frame->if_eflags & PSL_VM)) {
+	if (CS_SECURE(frame->if_cs) || (frame->if_eflags & PSL_VM)) {
 		/*
 		 * Interrupt is essentially a trap, so we can afford to call
 		 * the SIGFPE handler (if any) as soon as the interrupt