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nuke bcopyw and bcopyb. It is unclear what they were for, and nothing 

called them.
This commit is contained in:
perry 2001-05-16 05:01:28 +00:00
parent c15945130c
commit 4201bf1ae0
1 changed files with 1 additions and 86 deletions
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87
sys/arch/i386/i386/locore.s
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@ -1,4 +1,4 @@
/* $NetBSD: locore.s,v 1.237 2001/05/16 04:18:52 perry Exp $ */
/* $NetBSD: locore.s,v 1.238 2001/05/16 05:01:28 perry Exp $ */
/*-
* Copyright (c) 1998, 2000 The NetBSD Foundation, Inc.
@ -780,91 +780,6 @@ ENTRY(fillw)
popl %edi
ret
/*
* XXX Note: bcopyb doesn't seem to be used *anywhere*. Why does it exist?
* -- Perry Metzger, May 7, 2001
*/
/*
* bcopyb(caddr_t from, caddr_t to, size_t len);
* Copy len bytes, one byte at a time.
*/
/* LINTSTUB: Func: void bcopyb(caddr_t from, caddr_t to, size_t len) */
ENTRY(bcopyb)
pushl %esi
pushl %edi
movl 12(%esp),%esi
movl 16(%esp),%edi
movl 20(%esp),%ecx
cmpl %esi,%edi # potentially overlapping?
jnb 1f
cld # no; copy forward
rep
movsb
popl %edi
popl %esi
ret
ALIGN_TEXT
1: addl %ecx,%edi # copy backward
addl %ecx,%esi
std
decl %edi
decl %esi
rep
movsb
popl %edi
popl %esi
cld
ret
/*
* XXX Note: bcopyw doesn't seem to be used *anywhere*. Why does it exist?
* -- Perry Metzger, May 7, 2001
*/
/*
* bcopyw(caddr_t from, caddr_t to, size_t len);
* Copy len bytes, two bytes at a time.
*/
/* LINTSTUB: Func: void bcopyw(caddr_t from, caddr_t to, size_t len) */
ENTRY(bcopyw)
pushl %esi
pushl %edi
movl 12(%esp),%esi
movl 16(%esp),%edi
movl 20(%esp),%ecx
cmpl %esi,%edi # potentially overlapping?
jnb 1f
cld # no; copy forward
shrl $1,%ecx # copy by 16-bit words
rep
movsw
adc %ecx,%ecx # any bytes left?
rep
movsb
popl %edi
popl %esi
ret
ALIGN_TEXT
1: addl %ecx,%edi # copy backward
addl %ecx,%esi
std
andl $1,%ecx # any fractional bytes?
decl %edi
decl %esi
rep
movsb
movl 20(%esp),%ecx # copy remainder by 16-bit words
shrl $1,%ecx
decl %esi
decl %edi
rep
movsw
popl %edi
popl %esi
cld
ret
/*
* XXX Note: bcopy was obsoleted some time ago in favor of the mem* functions.
* It seems to only be legitimately called *inside* locore.s given that