1 /* Copyright (C) 2001-2015 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>
24 # include <dl-sysdep.h> /* Defines RTLD_PRIVATE_ERRNO. */
27 .globl C_SYMBOL_NAME(errno)
31 #if defined (EWOULDBLOCK_sys) && EWOULDBLOCK_sys != EAGAIN
32 /* We translate the system's EWOULDBLOCK error into EAGAIN.
33 The GNU C library always defines EWOULDBLOCK==EAGAIN.
34 EWOULDBLOCK_sys is the original number. */
35 cmp $EWOULDBLOCK_sys, %RAX_LP /* Is it the old EWOULDBLOCK? */
36 jne notb /* Branch if not. */
37 movl $EAGAIN, %eax /* Yes; translate it to EAGAIN. */
41 movq C_SYMBOL_NAME(errno@GOTTPOFF)(%rip), %rcx
42 movl %eax, %fs:0(%rcx)
44 movl %eax, %fs:C_SYMBOL_NAME(errno@TPOFF)
49 #undef __syscall_error