freebsd-dev/lib/libc/i386/sys/cerror.S
Julian Elischer f70177e76e Reviewed by: julian and (hsu?)
Submitted by:	 John Birrel(L?)

changes for threadsafe operations
1996-01-22 00:02:33 +00:00

83 lines
2.6 KiB
ArmAsm

/*-
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* William Jolitz.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
*
* $Id: cerror.S,v 1.3 1995/01/23 01:29:43 davidg Exp $
*/
#if defined(SYSLIBC_RCS) && !defined(lint)
.text
.asciz "$Id: cerror.S,v 1.3 1995/01/23 01:29:43 davidg Exp $"
#endif /* SYSLIBC_RCS and not lint */
#include "SYS.h"
#ifdef _THREAD_SAFE
/*
* Threaded version using __error().
*/
.globl ___error
.type ___error,@function
cerror:
pushl %eax
#ifdef PIC
call PIC_PLT(___error)
#else
call ___error
#endif
popl %ecx
movl %ecx,(%eax)
movl $-1,%eax
movl $-1,%edx
ret
#else /* _THREAD_SAFE */
/*
* Non-threaded version using global errno.
*/
.globl _errno
cerror:
#ifdef PIC
PIC_PROLOGUE
movl PIC_GOT(_errno),%ecx
movl %eax,(%ecx)
PIC_EPILOGUE
#else
movl %eax,_errno
#endif
movl $-1,%eax
movl $-1,%edx
ret
#endif /* _THREAD_SAFE */