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/* ==== syscall.S ============================================================
* Copyright (c) 1990 The Regents of the University of California.
* Copyright (c) 1993 Chris Provenzano, proven@mit.edu
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* William Jolitz.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* Description : Machine dependent syscalls for i386/i486/i586
*
* 1.00 93/08/26 proven
* -Started coding this file.
*
* 1.01 93/11/13 proven
* -The functions readv() and writev() added.
*/
#ifndef lint
.text
.asciz "$Id$";
#endif
#if defined(SYSLIBC_SCCS) && !defined(lint)
.asciz "@(#)syscall.s 5.1 (Berkeley) 4/23/90"
#endif /* SYSLIBC_SCCS and not lint */
#include <machine/asm.h>
#include <sys/syscall.h>
/*
* Initial asm stuff for all functions.
*/
.text
.align 2
/* ==========================================================================
* error code for all syscalls. The error value is returned as the negative
* of the errno value.
*/
1:
neg %eax
ret
/* ==========================================================================
* machdep_sys_fork()
*/
.globl _machdep_sys_fork;
_machdep_sys_fork:;
movl $(SYS_fork), %eax;
.byte 0x9a; .long 0; .word 7;
cmpl $0, %edx
je 2f
movl $0, %eax
2:
ret;
/* ==========================================================================
* machdep_sys___syscall()
*/
_machdep_sys___syscall:;
movl $(SYS___syscall), %eax;
.byte 0x9a; .long 0; .word 7;
jb 3f;
ret
/* ==========================================================================
* machdep_sys_sigsuspend()
*/
.globl _machdep_sys_sigsuspend;
_machdep_sys_sigsuspend:;
movl 4(%esp),%eax # fetch mask arg
movl (%eax),%eax # indirect to mask arg
movl %eax,4(%esp)
movl $(SYS_sigsuspend), %eax;
.byte 0x9a; .long 0; .word 7;
jb 3f;
ret
3:
neg %eax
movl $0xffffffff,%edx
ret
/* ==========================================================================
* machdep_sys_lseek()
*/
.globl _machdep_sys_lseek;
_machdep_sys_lseek:;
pushl %ebp;
movl %esp,%ebp;
pushl 0x14(%ebp);
pushl 0x10(%ebp);
pushl 0xc(%ebp);
pushl $0x0;
pushl 0x8(%ebp);
pushl $0x0;
pushl $(SYS_lseek);
call _machdep_sys___syscall;
leave
ret
/* ==========================================================================
* machdep_sys_ftruncate() ; Added by Monty
*/
.globl _machdep_sys_ftruncate;
_machdep_sys_ftruncate:;
pushl %ebp;
movl %esp,%ebp;
pushl 0x10(%ebp);
pushl 0xc(%ebp);
pushl $0x0; # Why this?
pushl 0x8(%ebp);
pushl $0x0; # And this?
pushl $(SYS_ftruncate);
call _machdep_sys___syscall;
leave
ret
|
