projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| f7a9f785 | 1 | /* Copyright (C) 1999-2016 Free Software Foundation, Inc. |
| d5efd131 MF |
2 | This file is part of the GNU C Library. |
| 3 | Contributed by David Mosberger-Tang <davidm@hpl.hp.com>. | |
| 4 | ||
| 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. | |
| 9 | ||
| 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. | |
| 14 | ||
| 15 | You should have received a copy of the GNU Lesser General Public | |
| 75efb018 MF |
16 | License along with the GNU C Library; if not, see |
| 17 | <http://www.gnu.org/licenses/>. */ | |
| d5efd131 MF |
18 | |
| 19 | #include <sysdep.h> | |
| 20 | #include <features.h> | |
| 21 | #include <tls.h> | |
| 22 | ||
| 23 | ENTRY(__syscall_error) | |
| 24 | #if RTLD_PRIVATE_ERRNO | |
| 25 | /* | |
| 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. | |
| 31 | */ | |
| 32 | addl r2=@gprel(rtld_errno),gp | |
| 33 | ;; | |
| 34 | st4 [r2]=r8 | |
| 35 | mov r8=-1 | |
| 36 | #else | |
| 4f41c682 | 37 | # if IS_IN (libc) |
| d5efd131 MF |
38 | # define SYSCALL_ERROR_ERRNO __libc_errno |
| 39 | # else | |
| 40 | # define SYSCALL_ERROR_ERRNO errno | |
| 41 | # endif | |
| 42 | addl r2=@ltoff(@tprel(SYSCALL_ERROR_ERRNO)), gp;; | |
| 43 | ld8 r2=[r2] | |
| 44 | mov r3=r8;; | |
| 45 | mov r8=-1 | |
| 46 | add r2=r2,r13;; | |
| 47 | st4 [r2]=r3 | |
| 48 | #endif | |
| 49 | ret // ret is #define'd in syscall.h! | |
| 50 | END(__syscall_error) | |
| 51 | ||
| 52 | ENTRY(__ia64_syscall) | |
| 53 | mov r15=r37 /* syscall number */ | |
| 54 | break __BREAK_SYSCALL | |
| 55 | cmp.eq p6,p0=-1,r10 /* r10 = -1 on error */ | |
| 56 | (p6) br.cond.spnt.few __syscall_error | |
| 57 | ret | |
| 58 | PSEUDO_END(__ia64_syscall) |