2016-01-04 17:05:18 +01:00
|
|
|
/* Copyright (C) 1996-2016 Free Software Foundation, Inc.
|
1996-11-20 04:45:46 +01:00
|
|
|
This file is part of the GNU C Library.
|
|
|
|
Contributed by David Mosberger <davidm@azstarnet.com>, 1996.
|
Wed Feb 14 00:21:17 1996 David Mosberger-Tang <davidm@azstarnet.com>
* sysdeps/unix/sysv/linux/alpha/Makefile,
sysdeps/unix/sysv/linux/alpha/brk.S,
sysdeps/unix/sysv/linux/alpha/fpu_control.c,
sysdeps/unix/sysv/linux/alpha/fpu_control.h,
sysdeps/unix/sysv/linux/alpha/ieee_get_fp_control.S,
sysdeps/unix/sysv/linux/alpha/ieee_set_fp_control.S,
sysdeps/unix/sysv/linux/alpha/pipe.S,
sysdeps/unix/sysv/linux/alpha/setfpucw.c,
sysdeps/unix/sysv/linux/alpha/sigprocmask.c,
sysdeps/unix/sysv/linux/alpha/speed.c,
sysdeps/unix/sysv/linux/alpha/start.S,
sysdeps/unix/sysv/linux/alpha/syscall.S,
sysdeps/unix/sysv/linux/alpha/syscalls.list,
sysdeps/unix/sysv/linux/alpha/sysdep.S,
sysdeps/unix/sysv/linux/alpha/sysdep.h: New files.
1996-03-19 20:51:23 +01:00
|
|
|
|
1996-11-20 04:45:46 +01:00
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
2001-07-06 06:56:23 +02:00
|
|
|
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.
|
Wed Feb 14 00:21:17 1996 David Mosberger-Tang <davidm@azstarnet.com>
* sysdeps/unix/sysv/linux/alpha/Makefile,
sysdeps/unix/sysv/linux/alpha/brk.S,
sysdeps/unix/sysv/linux/alpha/fpu_control.c,
sysdeps/unix/sysv/linux/alpha/fpu_control.h,
sysdeps/unix/sysv/linux/alpha/ieee_get_fp_control.S,
sysdeps/unix/sysv/linux/alpha/ieee_set_fp_control.S,
sysdeps/unix/sysv/linux/alpha/pipe.S,
sysdeps/unix/sysv/linux/alpha/setfpucw.c,
sysdeps/unix/sysv/linux/alpha/sigprocmask.c,
sysdeps/unix/sysv/linux/alpha/speed.c,
sysdeps/unix/sysv/linux/alpha/start.S,
sysdeps/unix/sysv/linux/alpha/syscall.S,
sysdeps/unix/sysv/linux/alpha/syscalls.list,
sysdeps/unix/sysv/linux/alpha/sysdep.S,
sysdeps/unix/sysv/linux/alpha/sysdep.h: New files.
1996-03-19 20:51:23 +01:00
|
|
|
|
1996-11-20 04:45:46 +01:00
|
|
|
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
|
2001-07-06 06:56:23 +02:00
|
|
|
Lesser General Public License for more details.
|
Wed Feb 14 00:21:17 1996 David Mosberger-Tang <davidm@azstarnet.com>
* sysdeps/unix/sysv/linux/alpha/Makefile,
sysdeps/unix/sysv/linux/alpha/brk.S,
sysdeps/unix/sysv/linux/alpha/fpu_control.c,
sysdeps/unix/sysv/linux/alpha/fpu_control.h,
sysdeps/unix/sysv/linux/alpha/ieee_get_fp_control.S,
sysdeps/unix/sysv/linux/alpha/ieee_set_fp_control.S,
sysdeps/unix/sysv/linux/alpha/pipe.S,
sysdeps/unix/sysv/linux/alpha/setfpucw.c,
sysdeps/unix/sysv/linux/alpha/sigprocmask.c,
sysdeps/unix/sysv/linux/alpha/speed.c,
sysdeps/unix/sysv/linux/alpha/start.S,
sysdeps/unix/sysv/linux/alpha/syscall.S,
sysdeps/unix/sysv/linux/alpha/syscalls.list,
sysdeps/unix/sysv/linux/alpha/sysdep.S,
sysdeps/unix/sysv/linux/alpha/sysdep.h: New files.
1996-03-19 20:51:23 +01:00
|
|
|
|
2001-07-06 06:56:23 +02:00
|
|
|
You should have received a copy of the GNU Lesser General Public
|
2012-03-10 00:56:38 +01:00
|
|
|
License along with the GNU C Library. If not, see
|
|
|
|
<http://www.gnu.org/licenses/>. */
|
Wed Feb 14 00:21:17 1996 David Mosberger-Tang <davidm@azstarnet.com>
* sysdeps/unix/sysv/linux/alpha/Makefile,
sysdeps/unix/sysv/linux/alpha/brk.S,
sysdeps/unix/sysv/linux/alpha/fpu_control.c,
sysdeps/unix/sysv/linux/alpha/fpu_control.h,
sysdeps/unix/sysv/linux/alpha/ieee_get_fp_control.S,
sysdeps/unix/sysv/linux/alpha/ieee_set_fp_control.S,
sysdeps/unix/sysv/linux/alpha/pipe.S,
sysdeps/unix/sysv/linux/alpha/setfpucw.c,
sysdeps/unix/sysv/linux/alpha/sigprocmask.c,
sysdeps/unix/sysv/linux/alpha/speed.c,
sysdeps/unix/sysv/linux/alpha/start.S,
sysdeps/unix/sysv/linux/alpha/syscall.S,
sysdeps/unix/sysv/linux/alpha/syscalls.list,
sysdeps/unix/sysv/linux/alpha/sysdep.S,
sysdeps/unix/sysv/linux/alpha/sysdep.h: New files.
1996-03-19 20:51:23 +01:00
|
|
|
|
|
|
|
#include <sysdep.h>
|
|
|
|
|
|
|
|
/*
|
|
|
|
* This is for COMPATIBILITY with Linux/x86 only. Linux/Alpha system
|
2013-06-05 22:26:40 +02:00
|
|
|
* calls return an error indication in a3. This allows arbitrary 64bit
|
2000-03-10 09:40:34 +01:00
|
|
|
* values to be returned in v0 (because negative values are not
|
|
|
|
* mistaken as error numbers). However, C allows only one value to
|
|
|
|
* be returned, so the interface below folds the error indication passed in
|
Wed Feb 14 00:21:17 1996 David Mosberger-Tang <davidm@azstarnet.com>
* sysdeps/unix/sysv/linux/alpha/Makefile,
sysdeps/unix/sysv/linux/alpha/brk.S,
sysdeps/unix/sysv/linux/alpha/fpu_control.c,
sysdeps/unix/sysv/linux/alpha/fpu_control.h,
sysdeps/unix/sysv/linux/alpha/ieee_get_fp_control.S,
sysdeps/unix/sysv/linux/alpha/ieee_set_fp_control.S,
sysdeps/unix/sysv/linux/alpha/pipe.S,
sysdeps/unix/sysv/linux/alpha/setfpucw.c,
sysdeps/unix/sysv/linux/alpha/sigprocmask.c,
sysdeps/unix/sysv/linux/alpha/speed.c,
sysdeps/unix/sysv/linux/alpha/start.S,
sysdeps/unix/sysv/linux/alpha/syscall.S,
sysdeps/unix/sysv/linux/alpha/syscalls.list,
sysdeps/unix/sysv/linux/alpha/sysdep.S,
sysdeps/unix/sysv/linux/alpha/sysdep.h: New files.
1996-03-19 20:51:23 +01:00
|
|
|
* a3 back into v0: it sets v0 to -errno if an error occurs. Thus,
|
|
|
|
* no negative 64bit numbers can be returned. To avoid this problem,
|
|
|
|
* use assembly stubs wherever possible/convenient.
|
|
|
|
*
|
|
|
|
* Usage:
|
|
|
|
*
|
2012-02-16 01:27:55 +01:00
|
|
|
* long syscall(syscall_number, arg1, arg2, arg3, arg4, arg5, arg6)
|
Wed Feb 14 00:21:17 1996 David Mosberger-Tang <davidm@azstarnet.com>
* sysdeps/unix/sysv/linux/alpha/Makefile,
sysdeps/unix/sysv/linux/alpha/brk.S,
sysdeps/unix/sysv/linux/alpha/fpu_control.c,
sysdeps/unix/sysv/linux/alpha/fpu_control.h,
sysdeps/unix/sysv/linux/alpha/ieee_get_fp_control.S,
sysdeps/unix/sysv/linux/alpha/ieee_set_fp_control.S,
sysdeps/unix/sysv/linux/alpha/pipe.S,
sysdeps/unix/sysv/linux/alpha/setfpucw.c,
sysdeps/unix/sysv/linux/alpha/sigprocmask.c,
sysdeps/unix/sysv/linux/alpha/speed.c,
sysdeps/unix/sysv/linux/alpha/start.S,
sysdeps/unix/sysv/linux/alpha/syscall.S,
sysdeps/unix/sysv/linux/alpha/syscalls.list,
sysdeps/unix/sysv/linux/alpha/sysdep.S,
sysdeps/unix/sysv/linux/alpha/sysdep.h: New files.
1996-03-19 20:51:23 +01:00
|
|
|
*
|
|
|
|
* syscall_number = the index of the system call we're invoking
|
2012-02-16 01:27:55 +01:00
|
|
|
* arg1-arg6 = up to 6 integer arguments to the system call
|
Wed Feb 14 00:21:17 1996 David Mosberger-Tang <davidm@azstarnet.com>
* sysdeps/unix/sysv/linux/alpha/Makefile,
sysdeps/unix/sysv/linux/alpha/brk.S,
sysdeps/unix/sysv/linux/alpha/fpu_control.c,
sysdeps/unix/sysv/linux/alpha/fpu_control.h,
sysdeps/unix/sysv/linux/alpha/ieee_get_fp_control.S,
sysdeps/unix/sysv/linux/alpha/ieee_set_fp_control.S,
sysdeps/unix/sysv/linux/alpha/pipe.S,
sysdeps/unix/sysv/linux/alpha/setfpucw.c,
sysdeps/unix/sysv/linux/alpha/sigprocmask.c,
sysdeps/unix/sysv/linux/alpha/speed.c,
sysdeps/unix/sysv/linux/alpha/start.S,
sysdeps/unix/sysv/linux/alpha/syscall.S,
sysdeps/unix/sysv/linux/alpha/syscalls.list,
sysdeps/unix/sysv/linux/alpha/sysdep.S,
sysdeps/unix/sysv/linux/alpha/sysdep.h: New files.
1996-03-19 20:51:23 +01:00
|
|
|
*
|
|
|
|
* We need to do some arg shifting: the kernel expects the
|
2012-02-16 01:27:55 +01:00
|
|
|
* syscall number in v0 and the first six args in a0-a5.
|
Wed Feb 14 00:21:17 1996 David Mosberger-Tang <davidm@azstarnet.com>
* sysdeps/unix/sysv/linux/alpha/Makefile,
sysdeps/unix/sysv/linux/alpha/brk.S,
sysdeps/unix/sysv/linux/alpha/fpu_control.c,
sysdeps/unix/sysv/linux/alpha/fpu_control.h,
sysdeps/unix/sysv/linux/alpha/ieee_get_fp_control.S,
sysdeps/unix/sysv/linux/alpha/ieee_set_fp_control.S,
sysdeps/unix/sysv/linux/alpha/pipe.S,
sysdeps/unix/sysv/linux/alpha/setfpucw.c,
sysdeps/unix/sysv/linux/alpha/sigprocmask.c,
sysdeps/unix/sysv/linux/alpha/speed.c,
sysdeps/unix/sysv/linux/alpha/start.S,
sysdeps/unix/sysv/linux/alpha/syscall.S,
sysdeps/unix/sysv/linux/alpha/syscalls.list,
sysdeps/unix/sysv/linux/alpha/sysdep.S,
sysdeps/unix/sysv/linux/alpha/sysdep.h: New files.
1996-03-19 20:51:23 +01:00
|
|
|
*
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
Wed May 22 00:40:50 1996 David Mosberger-Tang <davidm@azstarnet.com>
* sysdeps/alpha/_mcount.S, sysdeps/alpha/bb_init_func.S,
sysdeps/alpha/bsd-setjmp.S, sysdeps/alpha/ffs.S,
sysdeps/alpha/htonl.S, sysdeps/alpha/htons.S, sysdeps/alpha/memchr.S,
sysdeps/alpha/setjmp.S, sysdeps/alpha/strlen.S,
sysdeps/alpha/udiv_qrnnd.S, sysdeps/unix/sysv/linux/alpha/brk.S,
sysdeps/unix/sysv/linux/alpha/ieee_get_fp_control.S,
sysdeps/unix/sysv/linux/alpha/ieee_set_fp_control.S,
sysdeps/unix/sysv/linux/alpha/pipe.S,
sysdeps/unix/sysv/linux/sigsuspend.S,
sysdeps/unix/sysv/linux/alpha/syscall.S,
sysdeps/unix/sysv/linux/alpha/sysdep.S: Remove include of regdef.h.
sysdep.h includes it now. Replace ENTRY by LEAF with appropriate
framesize declaration. Replace "lda pv,sym/jsr pv" by "jsr sym".
1996-05-23 07:32:12 +02:00
|
|
|
LEAF(__syscall, 0)
|
1996-11-07 02:34:35 +01:00
|
|
|
#ifdef PROF
|
|
|
|
ldgp gp, 0(pv)
|
1996-11-20 04:45:46 +01:00
|
|
|
.set noat
|
1996-11-07 02:34:35 +01:00
|
|
|
lda AT, _mcount
|
|
|
|
jsr AT, (AT), _mcount
|
1996-11-20 04:45:46 +01:00
|
|
|
.set at
|
1996-11-07 02:34:35 +01:00
|
|
|
.prologue 1
|
|
|
|
#else
|
|
|
|
.prologue 0
|
|
|
|
#endif
|
|
|
|
|
1996-06-19 08:38:13 +02:00
|
|
|
mov a0, v0 /* Syscall number -> v0 */
|
|
|
|
mov a1, a0 /* arg1-arg5 -> a0-a4 */
|
|
|
|
mov a2, a1
|
|
|
|
mov a3, a2
|
|
|
|
mov a4, a3
|
|
|
|
mov a5, a4
|
2012-02-16 01:27:55 +01:00
|
|
|
ldq a5,0(sp) /* arg6 -> a5 */
|
1996-06-19 08:38:13 +02:00
|
|
|
|
|
|
|
call_pal PAL_callsys /* Invoke system call */
|
2012-09-28 19:51:01 +02:00
|
|
|
bne a3, SYSCALL_ERROR_LABEL
|
Wed Feb 14 00:21:17 1996 David Mosberger-Tang <davidm@azstarnet.com>
* sysdeps/unix/sysv/linux/alpha/Makefile,
sysdeps/unix/sysv/linux/alpha/brk.S,
sysdeps/unix/sysv/linux/alpha/fpu_control.c,
sysdeps/unix/sysv/linux/alpha/fpu_control.h,
sysdeps/unix/sysv/linux/alpha/ieee_get_fp_control.S,
sysdeps/unix/sysv/linux/alpha/ieee_set_fp_control.S,
sysdeps/unix/sysv/linux/alpha/pipe.S,
sysdeps/unix/sysv/linux/alpha/setfpucw.c,
sysdeps/unix/sysv/linux/alpha/sigprocmask.c,
sysdeps/unix/sysv/linux/alpha/speed.c,
sysdeps/unix/sysv/linux/alpha/start.S,
sysdeps/unix/sysv/linux/alpha/syscall.S,
sysdeps/unix/sysv/linux/alpha/syscalls.list,
sysdeps/unix/sysv/linux/alpha/sysdep.S,
sysdeps/unix/sysv/linux/alpha/sysdep.h: New files.
1996-03-19 20:51:23 +01:00
|
|
|
ret
|
|
|
|
|
2012-09-28 19:51:01 +02:00
|
|
|
PSEUDO_END(__syscall)
|
1996-11-20 04:45:46 +01:00
|
|
|
|
2005-05-26 16:30:48 +02:00
|
|
|
weak_alias (__syscall, syscall)
|