1 /* Copyright (C) 1999-2023 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
22 ENTRY(__syscall_error)
23 #if RTLD_PRIVATE_ERRNO
25 * Note that the gp has to be set properly for this to work.
26 * As long as all syscalls are in the same load unit
27 * (executable or shared library) as this routine, we should
28 * be fine. Otherwise, we would have to first load the global
29 * pointer register from __gp.
31 addl r2=@gprel(rtld_errno),gp
37 # define SYSCALL_ERROR_ERRNO __libc_errno
39 # define SYSCALL_ERROR_ERRNO errno
41 addl r2=@ltoff(@tprel(SYSCALL_ERROR_ERRNO)), gp;;
48 ret // ret is #define'd in syscall.h!
52 mov r15=r37 /* syscall number */
53 break __IA64_BREAK_SYSCALL
54 cmp.eq p6,p0=-1,r10 /* r10 = -1 on error */
55 (p6) br.cond.spnt.few __syscall_error
57 PSEUDO_END(__ia64_syscall)