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/* Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc.
Contributed by David Mosberger-Tang <davidm@hpl.hp.com>.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc.,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include <sysdep.h>
#include <features.h>
.global errno
.common errno,4,4
.type errno, @object
.size errno, 4
.global __errno
__errno = errno
.global _errno
_errno = errno
ENTRY(__syscall_error)
#ifdef _LIBC_REENTRANT
.prologue ASM_UNW_PRLG_RP|ASM_UNW_PRLG_PFS, ASM_UNW_PRLG_GRSAVE(0)
alloc r35=ar.pfs, 0, 4, 0, 0
mov r32=rp
mov r33=r8
mov r34=r1
;;
br.call.sptk.many b0 = __errno_location#
.Lret0: /* force new bundle */
st4 [r8]=r33
mov r1=r34
mov rp=r32
mov r8=-1
mov ar.pfs=r35
#else /* _LIBC_REENTRANT */
/*
* Note that the gp has to be set properly for this to work.
* As long as all syscalls are in the same load unit
* (executable or shared library) as this routine, we should
* be fine. Otherwise, we would have to first load the global
* pointer register from __gp.
*/
addl r2=@ltoff(errno),gp
;;
ld8 r2=[r2]
mov r3=r8
mov r8=-1
;;
st4 [r2]=r3
#endif /* _LIBC_REENTRANT */
ret // ret is #define'd in syscall.h!
END(__syscall_error)
ENTRY(__ia64_syscall)
mov r15=r37 /* syscall number */
break __BREAK_SYSCALL
cmp.eq p6,p0=-1,r10 /* r10 = -1 on error */
(p6) br.cond.spnt.few __syscall_error
ret
PSEUDO_END(__ia64_syscall)
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