/* $NetBSD: unixsys.S,v 1.2 2011/06/20 12:39:21 nonaka Exp $ */
/* $OpenBSD: unixsys.S,v 1.6 2005/05/24 20:38:20 uwe Exp $ */
/*
* Copyright (c) 2005 Uwe Stuehler <
[email protected]>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <machine/asm.h>
#include "compat_linux.h"
.text
#define RSYSCALL(x) \
ENTRY(__CONCAT(u,x)) \
swi __CONCAT(__NR_,x); \
b 1f
RSYSCALL(exit)
RSYSCALL(read)
RSYSCALL(write)
RSYSCALL(open)
RSYSCALL(close)
RSYSCALL(lseek32)
RSYSCALL(ioctl)
RSYSCALL(stat)
RSYSCALL(fstat)
1:
cmn r0, #4096
movcc pc, lr
rsb r0, r0, #0
ldr r1, .Lerrno /* XXX clobbers arg1 */
str r0, [r1]
mvn r0, #0
mov pc, lr
Lerrno:
.word errno
/* XXX only works for up to four arguments. */
ENTRY(syscall)
swi __NR_syscall
b 1b
ENTRY(uselect)
str r4, [sp, #-4]!
ldr r4, [sp, #4]
swi __NR_select
ldr r4, [sp], #4
cmn r0, #4096
movcc pc, lr
rsb r0, r0, #0
str r1, [sp, #-4]!
ldr r1, .Lerrno
str r0, [r1]
ldr r1, [sp], #4
mvn r0, #0
mov pc, lr
data
.global errno
errno:
.word 0
