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Use single movl instruction rather than pushl/popl pair.

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This commit is contained in:
junyoung 2002-10-04 03:20:59 +00:00
parent 8b656df79c
commit 8ab9e2ef57
1 changed files with 17 additions and 20 deletions
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37
sys/arch/i386/i386/locore.s
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@ -1,4 +1,4 @@
/* $NetBSD: locore.s,v 1.261 2002/10/01 12:56:55 fvdl Exp $ */
/* $NetBSD: locore.s,v 1.262 2002/10/04 03:20:59 junyoung Exp $ */
/*-
* Copyright (c) 1998, 2000 The NetBSD Foundation, Inc.
@ -980,11 +980,10 @@ ENTRY(copyout)
ENTRY(i386_copyout)
pushl %esi
pushl %edi
pushl $0
movl 16(%esp),%esi
movl 20(%esp),%edi
movl 24(%esp),%eax
movl 12(%esp),%esi
movl 16(%esp),%edi
movl 20(%esp),%eax
/*
* We check that the end of the destination buffer is not past the end
@ -1058,10 +1057,10 @@ ENTRY(i386_copyout)
rep
movsb
popl PCB_ONFAULT(%edx)
xorl %eax,%eax
popl %edi
popl %esi
xorl %eax,%eax
popl %eax,PCB_ONFAULT(%edx)
ret
#endif /* I386_CPU */
@ -1070,11 +1069,10 @@ ENTRY(i386_copyout)
ENTRY(i486_copyout)
pushl %esi
pushl %edi
pushl $0
movl 16(%esp),%esi
movl 20(%esp),%edi
movl 24(%esp),%eax
movl 12(%esp),%esi
movl 16(%esp),%edi
movl 20(%esp),%eax
/*
* We check that the end of the destination buffer is not past the end
@ -1100,10 +1098,10 @@ ENTRY(i486_copyout)
rep
movsb
popl PCB_ONFAULT(%edx)
xorl %eax,%eax
popl %edi
popl %esi
xorl %eax,%eax
movl %eax,PCB_ONFAULT(%edx)
ret
#endif /* I486_CPU || I586_CPU || I686_CPU */
@ -1123,12 +1121,11 @@ ENTRY(i386_copyin)
pushl %esi
pushl %edi
GET_CURPCB(%eax)
pushl $0
movl $_C_LABEL(copy_fault),PCB_ONFAULT(%eax)
movl 16(%esp),%esi
movl 20(%esp),%edi
movl 24(%esp),%eax
movl 12(%esp),%esi
movl 16(%esp),%edi
movl 20(%esp),%eax
/*
* We check that the end of the destination buffer is not past the end
@ -1153,10 +1150,10 @@ ENTRY(i386_copyin)
movsb
GET_CURPCB(%edx)
popl PCB_ONFAULT(%edx)
xorl %eax,%eax
popl %edi
popl %esi
xorl %eax,%eax
movl %eax,PCB_ONFAULT(%edx)
ret
#endif /* I386_CPU || I486_CPU || I586_CPU || I686_CPU */
@ -1167,7 +1164,7 @@ NENTRY(copy_efault)
/* LINTSTUB: Ignore */
NENTRY(copy_fault)
GET_CURPCB(%edx)
popl PCB_ONFAULT(%edx)
movl $0,PCB_ONFAULT(%edx)
popl %edi
popl %esi
ret