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/* $OpenBSD: cerror.S,v 1.11 2015/09/05 06:22:47 guenther Exp $ */
/*
* Copyright (c) 1996 Dale Rahn
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "SYS.h"
#include <machine/asm.h>
#define ERRNOPTR_OFFSET 16
WEAK_ALIAS(__cerror, ___cerror)
.text
.protected _ASM_LABEL(___cerror)
ASENTRY(___cerror)
cmpwi 2, 0
bne- .L_threaded
#if defined (__PIC__)
mflr 3 /* error value is in r0, use r3 */
bcl 20, 31, 1f
1: mflr 4
addis 4, 4, _GLOBAL_OFFSET_TABLE_-1b@ha
addi 4, 4, _GLOBAL_OFFSET_TABLE_-1b@l
lwz 5,_C_LABEL(errno)@got(4)
mtlr 3
#else
addis 5, 0, errno@H
ori 5, 5, errno@L
#endif
b .L_do_store
.L_threaded:
lwz 5, 4(2)
lwz 5, ERRNOPTR_OFFSET(5)
.L_do_store:
stw 0, 0(5)
addi 3, 0, -1
addi 4, 0, -1
blr
END(___cerror)
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