PERFORCE change 28174 for review

[Peter Wemm]

http://perforce.freebsd.org/chv.cgi?CH=28174

Change 28174 by peter at peter_overcee on 2003/04/04 21:21:26

	convert copyout to x86-64

Affected files ...

.. //depot/projects/hammer/sys/x86_64/x86_64/support.s#9 edit

Differences ...

==== //depot/projects/hammer/sys/x86_64/x86_64/support.s#9 (text+ko) ====

@@ -65,14 +65,14 @@
  * copyout(from_kernel, to_user, len)  - MP SAFE
  */
 ENTRY(copyout)
-	movl	PCPU(CURPCB),%eax
-	movl	$copyout_fault,PCB_ONFAULT(%eax)
-	pushl	%esi
-	pushl	%edi
-	pushl	%ebx
-	movl	16(%esp),%esi
-	movl	20(%esp),%edi
-	movl	24(%esp),%ebx
+	movq	PCPU(CURPCB),%rax
+	movq	$copyout_fault,PCB_ONFAULT(%rax)
+	pushq	%rsi
+	pushq	%rdi
+	pushq	%rbx
+	movq	32(%rsp),%rsi
+	movq	40(%rsp),%rdi
+	movq	48(%rsp),%rbx
 	testl	%ebx,%ebx			/* anything to do? */
 	jz	done_copyout
 
@@ -86,8 +86,8 @@
 	/*
 	 * First, prevent address wrapping.
 	 */
-	movl	%edi,%eax
-	addl	%ebx,%eax
+	movq	%rdi,%rax
+	addq	%rbx,%rax
 	jc	copyout_fault
 /*
  * XXX STOP USING VM_MAXUSER_ADDRESS.
@@ -95,38 +95,38 @@
  * looks like there is an off by one error, and of course it caused an off
  * by one error in several places.
  */
-	cmpl	$VM_MAXUSER_ADDRESS,%eax
+	cmpq	$VM_MAXUSER_ADDRESS,%rax
 	ja	copyout_fault
 
-	/* bcopy(%esi, %edi, %ebx) */
-	movl	%ebx,%ecx
+	/* bcopy(%rsi, %rdi, %rbx) */
+	movq	%rbx,%rcx
 
-	shrl	$2,%ecx
+	shrq	$3,%rcx
 	cld
 	rep
-	movsl
+	movsq
 	movb	%bl,%cl
-	andb	$3,%cl
+	andb	$7,%cl
 	rep
 	movsb
 
 done_copyout:
-	popl	%ebx
-	popl	%edi
-	popl	%esi
-	xorl	%eax,%eax
-	movl	PCPU(CURPCB),%edx
-	movl	%eax,PCB_ONFAULT(%edx)
+	popq	%rbx
+	popq	%rdi
+	popq	%rsi
+	xorq	%rax,%rax
+	movq	PCPU(CURPCB),%rdx
+	movq	%rax,PCB_ONFAULT(%rdx)
 	ret
 
 	ALIGN_TEXT
 copyout_fault:
-	popl	%ebx
-	popl	%edi
-	popl	%esi
-	movl	PCPU(CURPCB),%edx
-	movl	$0,PCB_ONFAULT(%edx)
-	movl	$EFAULT,%eax
+	popq	%rbx
+	popq	%rdi
+	popq	%rsi
+	movq	PCPU(CURPCB),%rdx
+	movq	$0,PCB_ONFAULT(%rdx)
+	movq	$EFAULT,%rax
 	ret
 
 /*