1 /* Copyright (C) 1991-2013 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 <http://www.gnu.org/licenses/>. */
20 #include <bits/errno.h>
25 # include <dl-sysdep.h> /* Defines RTLD_PRIVATE_ERRNO. */
28 .globl C_SYMBOL_NAME(errno)
32 #if defined (EWOULDBLOCK_sys) && EWOULDBLOCK_sys != EAGAIN
33 /* We translate the system's EWOULDBLOCK error into EAGAIN.
34 The GNU C library always defines EWOULDBLOCK==EAGAIN.
35 EWOULDBLOCK_sys is the original number. */
36 cmpl $EWOULDBLOCK_sys, %eax /* Is it the old EWOULDBLOCK? */
37 jne notb /* Branch if not. */
38 movl $EAGAIN, %eax /* Yes; translate it to EAGAIN. */
42 # ifndef NO_TLS_DIRECT_SEG_REFS
43 movl %eax, %gs:C_SYMBOL_NAME(errno@NTPOFF)
46 movl %eax, C_SYMBOL_NAME(errno@NTPOFF)(%ecx)
49 /* The caller has pushed %ebx and then set it up to
50 point to the GOT before calling us through the PLT. */
51 movl C_SYMBOL_NAME(errno@GOTNTPOFF)(%ebx), %ecx
53 /* Pop %ebx value saved before jumping here. */
55 # ifndef NO_TLS_DIRECT_SEG_REFS
59 movl %eax, %gs:0(%ecx)
65 #undef __syscall_error