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