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/* Copyright (C) 1999-2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
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 Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <sysdep.h>
#include <features.h>
#include <tls.h>
ENTRY(__syscall_error)
#if RTLD_PRIVATE_ERRNO
/*
* 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=@gprel(rtld_errno),gp
;;
st4 [r2]=r8
mov r8=-1
#else
# if IS_IN (libc)
# define SYSCALL_ERROR_ERRNO __libc_errno
# else
# define SYSCALL_ERROR_ERRNO errno
# endif
addl r2=@ltoff(@tprel(SYSCALL_ERROR_ERRNO)), gp;;
ld8 r2=[r2]
mov r3=r8;;
mov r8=-1
add r2=r2,r13;;
st4 [r2]=r3
#endif
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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