projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| bfff8b1b | 1 | /* Copyright (C) 1991-2017 Free Software Foundation, Inc. |
| 19361cb7 | 2 | This file is part of the GNU C Library. |
| 28f540f4 | 3 | |
| 19361cb7 | 4 | The GNU C Library is free software; you can redistribute it and/or |
| 41bdb6e2 AJ |
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. | |
| 28f540f4 | 8 | |
| 19361cb7 UD |
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 | |
| 41bdb6e2 | 12 | Lesser General Public License for more details. |
| 28f540f4 | 13 | |
| 41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
| 59ba27a6 PE |
15 | License along with the GNU C Library; if not, see |
| 16 | <http://www.gnu.org/licenses/>. */ | |
| 28f540f4 RM |
17 | |
| 18 | #include <sysdep.h> | |
| 19 | #define _ERRNO_H | |
| 5107cf1d | 20 | #include <bits/errno.h> |
| 28f540f4 | 21 | |
| a3848485 | 22 | #if IS_IN (rtld) |
| ce460d04 RM |
23 | # include <dl-sysdep.h> /* Defines RTLD_PRIVATE_ERRNO. */ |
| 24 | #endif | |
| 25 | ||
| 28f540f4 RM |
26 | .globl C_SYMBOL_NAME(errno) |
| 27 | .globl syscall_error | |
| 28 | ||
| 28f540f4 | 29 | __syscall_error: |
| 28f540f4 RM |
30 | #if defined (EWOULDBLOCK_sys) && EWOULDBLOCK_sys != EAGAIN |
| 31 | /* We translate the system's EWOULDBLOCK error into EAGAIN. | |
| 32 | The GNU C library always defines EWOULDBLOCK==EAGAIN. | |
| 33 | EWOULDBLOCK_sys is the original number. */ | |
| 34 | cmpl $EWOULDBLOCK_sys, %eax /* Is it the old EWOULDBLOCK? */ | |
| 35 | jne notb /* Branch if not. */ | |
| 36 | movl $EAGAIN, %eax /* Yes; translate it to EAGAIN. */ | |
| 439d1d45 | 37 | notb: |
| edf5b2d7 | 38 | #endif |
| 439d1d45 | 39 | #ifndef PIC |
| d063d164 | 40 | # ifndef NO_TLS_DIRECT_SEG_REFS |
| fe27057d | 41 | movl %eax, %gs:C_SYMBOL_NAME(errno@NTPOFF) |
| d063d164 | 42 | # else |
| 70a8119b RM |
43 | movl %gs:0, %ecx |
| 44 | movl %eax, C_SYMBOL_NAME(errno@NTPOFF)(%ecx) | |
| ee63ca21 | 45 | # endif |
| 439d1d45 | 46 | #else |
| 1d234146 RM |
47 | /* The caller has pushed %ebx and then set it up to |
| 48 | point to the GOT before calling us through the PLT. */ | |
| fe27057d RM |
49 | movl C_SYMBOL_NAME(errno@GOTNTPOFF)(%ebx), %ecx |
| 50 | ||
| 51 | /* Pop %ebx value saved before jumping here. */ | |
| 52 | popl %ebx | |
| d063d164 | 53 | # ifndef NO_TLS_DIRECT_SEG_REFS |
| 70a8119b RM |
54 | addl %gs:0, %ecx |
| 55 | movl %eax, (%ecx) | |
| ee63ca21 | 56 | # else |
| d063d164 | 57 | movl %eax, %gs:0(%ecx) |
| ee63ca21 | 58 | # endif |
| 439d1d45 | 59 | #endif |
| 28f540f4 RM |
60 | movl $-1, %eax |
| 61 | ret | |
| edf5b2d7 | 62 | |
| edf5b2d7 | 63 | #undef __syscall_error |
| 6ed0492f | 64 | END (__syscall_error) |