2013-01-03 03:01:50 +08:00
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/* Copyright (C) 1999-2013 Free Software Foundation, Inc.
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2012-04-17 10:02:27 +08:00
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This file is part of the GNU C Library.
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Contributed by David Mosberger-Tang <davidm@hpl.hp.com>.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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2012-04-17 10:10:24 +08:00
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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2012-04-17 10:02:27 +08:00
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#include <sysdep.h>
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#include <features.h>
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#include <tls.h>
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ENTRY(__syscall_error)
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#if RTLD_PRIVATE_ERRNO
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/*
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* Note that the gp has to be set properly for this to work.
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* As long as all syscalls are in the same load unit
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* (executable or shared library) as this routine, we should
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* be fine. Otherwise, we would have to first load the global
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* pointer register from __gp.
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*/
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addl r2=@gprel(rtld_errno),gp
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;;
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st4 [r2]=r8
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mov r8=-1
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#else
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# ifndef NOT_IN_libc
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# define SYSCALL_ERROR_ERRNO __libc_errno
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# else
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# define SYSCALL_ERROR_ERRNO errno
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# endif
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addl r2=@ltoff(@tprel(SYSCALL_ERROR_ERRNO)), gp;;
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ld8 r2=[r2]
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mov r3=r8;;
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mov r8=-1
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add r2=r2,r13;;
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st4 [r2]=r3
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#endif
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ret // ret is #define'd in syscall.h!
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END(__syscall_error)
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ENTRY(__ia64_syscall)
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mov r15=r37 /* syscall number */
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break __BREAK_SYSCALL
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cmp.eq p6,p0=-1,r10 /* r10 = -1 on error */
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(p6) br.cond.spnt.few __syscall_error
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ret
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PSEUDO_END(__ia64_syscall)
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