1 /* Copyright (C) 1999-2013 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by David Mosberger-Tang <davidm@hpl.hp.com>.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
23 ENTRY(__syscall_error)
24 #if RTLD_PRIVATE_ERRNO
26 * Note that the gp has to be set properly for this to work.
27 * As long as all syscalls are in the same load unit
28 * (executable or shared library) as this routine, we should
29 * be fine. Otherwise, we would have to first load the global
30 * pointer register from __gp.
32 addl r2=@gprel(rtld_errno),gp
38 # define SYSCALL_ERROR_ERRNO __libc_errno
40 # define SYSCALL_ERROR_ERRNO errno
42 addl r2=@ltoff(@tprel(SYSCALL_ERROR_ERRNO)), gp;;
49 ret // ret is #define'd in syscall.h!
53 mov r15=r37 /* syscall number */
55 cmp.eq p6,p0=-1,r10 /* r10 = -1 on error */
56 (p6) br.cond.spnt.few __syscall_error
58 PSEUDO_END(__ia64_syscall)