72 lines
2.1 KiB
ArmAsm
72 lines
2.1 KiB
ArmAsm
|
/* Copyright (C) 1996 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., 675 Mass Ave,
|
||
|
|
Cambridge, MA 02139, USA. */
|
||
|
|
|
||
|
|
/* Because the Linux version is in fact m68k/ELF and the start.? file
|
||
|
|
for this system (sysdeps/m68k/elf/start.S) is also used by The Hurd
|
||
|
|
and therefore this files must not contain the definition of the
|
||
|
|
`errno' variable (I don't know why, ask Roland), we have to define
|
||
|
|
it somewhere else.
|
||
|
|
|
||
|
|
...and this place is here. */
|
||
|
|
.bss
|
||
|
|
.globl errno
|
||
|
|
.type errno,@object
|
||
|
|
errno: .space 4
|
||
|
|
.size errno,4
|
||
|
|
.globl _errno
|
||
|
|
.type _errno,@object
|
||
|
|
_errno = errno /* This name is expected by hj libc.so.5 startup code. */
|
||
|
|
.text
|
||
|
|
|
||
|
|
/* The following code is not used at all in the shared library.
|
||
|
|
The PIC system call stubs set errno themselves. */
|
||
|
|
|
||
|
|
#ifndef PIC
|
||
|
|
|
||
|
|
#include <sysdep.h>
|
||
|
|
#define _ERRNO_H
|
||
|
|
#include <errnos.h>
|
||
|
|
|
||
|
|
.globl errno
|
||
|
|
.globl __syscall_error
|
||
|
|
|
||
|
|
/* The syscall stubs jump here when they detect an error. */
|
||
|
|
|
||
|
|
.globl __syscall_error
|
||
|
|
__syscall_error:
|
||
|
|
neg.l %d0
|
||
|
|
|
||
|
|
#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. */
|
||
|
|
move.l #EWOULDBLOCK_sys, %d1
|
||
|
|
cmp.l %d0, %d1
|
||
|
|
jne 1f
|
||
|
|
move.l #EAGAIN, %d0
|
||
|
|
1:
|
||
|
|
#endif
|
||
|
|
|
||
|
|
move.l %d0, errno
|
||
|
|
move.l #-1, %d0
|
||
|
|
/* Copy return value to %a0 for syscalls that are declared to
|
||
|
|
return a pointer. */
|
||
|
|
move.l %d0, %a0
|
||
|
|
rts
|
||
|
|
#endif /* PIC */
|