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From: Peter Wemm <peter@FreeBSD.org>
Subject: PERFORCE change 17894 for review
To: Perforce Change Reviews <perforce@freebsd.org>
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http://people.freebsd.org/~peter/p4db/chv.cgi?CH=17894

Change 17894 by peter@peter_overcee on 2002/09/21 17:49:03

	update lgdt,lidt,lldt,ltr.  Remind me again why lldt, lidt and ltr
	are not inlines?

Affected files ...

.. //depot/projects/hammer/sys/x86_64/x86_64/support.s#4 edit

Differences ...

==== //depot/projects/hammer/sys/x86_64/x86_64/support.s#4 (text+ko) ====

@@ -638,8 +638,7 @@
 /* void lgdt(struct region_descriptor *rdp); */
 ENTRY(lgdt)
 	/* reload the descriptor table */
-	movl	4(%esp),%eax
-	lgdt	(%eax)
+	lgdt	(%rdi)
 
 	/* flush the prefetch q */
 	jmp	1f
@@ -649,37 +648,33 @@
 	movl	$KDSEL,%eax
 	mov	%ax,%ds
 	mov	%ax,%es
-	mov	%ax,%gs
 	mov	%ax,%ss
-	movl	$KPSEL,%eax
-	mov	%ax,%fs
 
 	/* reload code selector by turning return into intersegmental return */
-	movl	(%esp),%eax
-	pushl	%eax
-	movl	$KCSEL,4(%esp)
-	lret
+	popq	%rax
+	pushq	$KCSEL
+	pushq	%rax
+	lretq
 
 /*
  * void lidt(struct region_descriptor *rdp);
  */
 ENTRY(lidt)
-	movl	4(%esp),%eax
-	lidt	(%eax)
+	lidt	(%rdi)
 	ret
 
 /*
  * void lldt(u_short sel)
  */
 ENTRY(lldt)
-	lldt	4(%esp)
+	lldt	%di
 	ret
 
 /*
  * void ltr(u_short sel)
  */
 ENTRY(ltr)
-	ltr	4(%esp)
+	ltr	%di
 	ret
 
 /* void reset_dbregs() */

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