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- /* Copyright (C) 2001-2019 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
- #include <sysdep.h>
- #define _ERRNO_H
- #include <bits/errno.h>
- #include <tls.h>
- #if IS_IN (rtld)
- # include <dl-sysdep.h> /* Defines RTLD_PRIVATE_ERRNO. */
- #endif
- .globl C_SYMBOL_NAME(errno)
- .globl syscall_error
- __syscall_error:
- #if defined (EWOULDBLOCK_sys) && EWOULDBLOCK_sys != EAGAIN
- /* We translate the system's EWOULDBLOCK error into EAGAIN.
- The GNU C library always defines EWOULDBLOCK==EAGAIN.
- EWOULDBLOCK_sys is the original number. */
- cmp $EWOULDBLOCK_sys, %RAX_LP /* Is it the old EWOULDBLOCK? */
- jne notb /* Branch if not. */
- movl $EAGAIN, %eax /* Yes; translate it to EAGAIN. */
- notb:
- #endif
- #ifdef PIC
- movq C_SYMBOL_NAME(errno@GOTTPOFF)(%rip), %rcx
- movl %eax, %fs:0(%rcx)
- #else
- movl %eax, %fs:C_SYMBOL_NAME(errno@TPOFF)
- #endif
- or $-1, %RAX_LP
- ret
- #undef __syscall_error
- END (__syscall_error)
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