| /* Copyright (C) 1999-2014 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 |
| # ifndef NOT_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) |
