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72 lines
2.1 KiB
ArmAsm
72 lines
2.1 KiB
ArmAsm
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/* Copyright (C) 1996 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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/* Because the Linux version is in fact m68k/ELF and the start.? file
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for this system (sysdeps/m68k/elf/start.S) is also used by The Hurd
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and therefore this files must not contain the definition of the
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`errno' variable (I don't know why, ask Roland), we have to define
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it somewhere else.
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...and this place is here. */
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.bss
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.globl errno
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.type errno,@object
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errno: .space 4
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.size errno,4
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.globl _errno
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.type _errno,@object
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_errno = errno /* This name is expected by hj libc.so.5 startup code. */
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.text
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/* The following code is not used at all in the shared library.
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The PIC system call stubs set errno themselves. */
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#ifndef PIC
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#include <sysdep.h>
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#define _ERRNO_H
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#include <errnos.h>
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.globl errno
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.globl __syscall_error
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/* The syscall stubs jump here when they detect an error. */
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.globl __syscall_error
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__syscall_error:
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neg.l %d0
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#if defined (EWOULDBLOCK_sys) && EWOULDBLOCK_sys != EAGAIN
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/* We translate the system's EWOULDBLOCK error into EAGAIN.
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The GNU C library always defines EWOULDBLOCK==EAGAIN.
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EWOULDBLOCK_sys is the original number. */
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move.l #EWOULDBLOCK_sys, %d1
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cmp.l %d0, %d1
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jne 1f
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move.l #EAGAIN, %d0
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1:
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#endif
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move.l %d0, errno
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move.l #-1, %d0
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/* Copy return value to %a0 for syscalls that are declared to
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return a pointer. */
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move.l %d0, %a0
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rts
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#endif /* PIC */
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