syscall-i386-netbsd-1.3.S
上传用户:tsgydb
上传日期:2007-04-14
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文件大小:5k
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MySQL数据库
开发平台:
Visual C++
- /* ==== 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
- /* ==========================================================================
- * machdep_sys_fork()
- */
- .globl _C_LABEL(machdep_sys_fork);
- _C_LABEL(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;
- int $0x80;
- jb 3f;
- ret
- #ifndef SYS___sigsuspend14
- /* ==========================================================================
- * machdep_sys_sigsuspend()
- */
- .globl _C_LABEL(machdep_sys_sigsuspend);
- _C_LABEL(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;
- int $0x80;
- jb 3f;
- ret
- #endif
- 3:
- neg %eax
- movl $0xffffffff,%edx
- ret
- /* ==========================================================================
- * machdep_sys_lseek()
- */
- .globl _C_LABEL(machdep_sys_lseek);
- _C_LABEL(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 _C_LABEL(machdep_sys_ftruncate);
- _C_LABEL(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
- #ifndef SYS___sigprocmask14
- /* ==========================================================================
- * machdep_sys_sigprocmask()
- */
- .globl _C_LABEL(machdep_sys_sigprocmask);
- _C_LABEL(machdep_sys_sigprocmask):;
- movl 8(%esp),%ecx
- movl (%ecx),%ecx
- movl %ecx,8(%esp)
- movl $(SYS_sigprocmask), %eax;
- int $0x80;
- jb 3b;
- ret
- #endif
- /* ==========================================================================
- * machdep_sys_pipe()
- */
- .globl _C_LABEL(machdep_sys_pipe);
- _C_LABEL(machdep_sys_pipe):;
- movl $(SYS_pipe), %eax;
- int $0x80;
- jb 3b;
- movl 4(%esp),%ecx
- movl %eax,(%ecx)
- movl %edx,4(%ecx)
- xorl %eax,%eax
- ret
- /* ==========================================================================
- * machdep_sys_fstat()
- */
- .globl _C_LABEL(machdep_sys_fstat);
- _C_LABEL(machdep_sys_fstat):;
- movl $(SYS___fstat13), %eax;
- int $0x80;
- jb 4f;
- ret
- 4:
- neg %eax
- movl $0xffffffff,%edx
- ret