ARM dependent assembler and low-level definitions.

This commit is contained in:
Ulrich Drepper 1997-06-12 21:23:19 +00:00
parent 57771f2025
commit 7eff60903d

49
sysdeps/unix/arm/sysdep.S Normal file
View File

@ -0,0 +1,49 @@
/* Copyright (C) 1991, 92, 93, 94, 95, 96, 97 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 Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <sysdep.h>
#define _ERRNO_H
#include <errnos.h>
.globl C_SYMBOL_NAME(errno)
.globl syscall_error
_errno_loc: .long C_SYMBOL_NAME(errno)
#undef syscall_error
#ifdef NO_UNDERSCORES
__syscall_error:
#else
syscall_error:
#endif
#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 r0, $EWOULDBLOCK_sys /* Is it the old EWOULDBLOCK? */
moveq r0, $EAGAIN /* Yes; translate it to EAGAIN. */
#endif
#ifndef PIC
ldr r1, _errno_loc
str r0, [r1]
#endif
mvn r0, $0
RETINSTR(mov, pc, r14)
#undef __syscall_error
END (__syscall_error)