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04277e02 | 1 | /* Copyright (C) 1991-2019 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 | 15 | License along with the GNU C Library; if not, see |
5a82c748 | 16 | <https://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) |