syscall-i386-freebsd-2.0.S
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- /* ==== syscall.S ============================================================
- * Copyright (c) 1990 The Regents of the University of California.
- * Copyright (c) 1995 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
- *
- */
- #ifndef lint
- .text
- .asciz "syscall-i386-freebsd-2.0.S,v 1.2 1995/05/26 07:44:29 proven Exp";
- #endif
- #if defined(SYSLIBC_SCCS) && !defined(lint)
- .asciz "@(#)syscall.s 5.1 (Berkeley) 4/23/90"
- #endif /* SYSLIBC_SCCS and not lint */
- #include <sys/syscall.h>
- #ifdef __STDC__
- #ifdef __ELF__
- #define NAME(X) machdep_sys_##X
- #else
- #define NAME(X) _machdep_sys_##X
- #endif
- #else
- #ifdef __ELF__
- #define NAME(X) machdep_sys_/**/X
- #else
- #define NAME(X) _machdep_sys_/**/X
- #endif
- #endif
- #ifdef __ELF__
- #define END(X) 5: ; .type NAME(X),@function ; .size NAME(X),5b - NAME(X)
- #define KERNCALL int $0x80
- #else
- #define END(X)
- #define KERNCALL .byte 0x9a; .long 0; .word 7;
- #endif
- /*
- * 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 NAME(fork);
- NAME(fork):;
- movl $(SYS_fork), %eax;
- KERNCALL;
- cmpl $0, %edx
- je 2f
- movl $0, %eax
- 2:
- ret;
- END(fork)
- /* ==========================================================================
- * machdep_sys___syscall()
- */
- _machdep_sys___syscall:;
- movl $(SYS___syscall), %eax;
- KERNCALL;
- jb 3f;
- ret
- /* ==========================================================================
- * machdep_sys_sigsuspend()
- */
- .globl NAME(sigsuspend);
- NAME(sigsuspend):;
- movl 4(%esp),%eax # fetch mask arg
- movl (%eax),%eax # indirect to mask arg
- movl %eax,4(%esp)
- movl $(SYS_sigsuspend), %eax;
- KERNCALL;
- jb 3f;
- ret
- 3:
- neg %eax
- movl $0xffffffff,%edx
- ret
- END(sigsuspend)
- /* ==========================================================================
- * machdep_sys_sigprocmask()
- */
- .globl NAME(sigprocmask);
- NAME(sigprocmask):;
- movl 8(%esp),%ecx
- movl (%ecx),%ecx
- movl %ecx,8(%esp)
- movl $ SYS_sigprocmask , %eax
- KERNCALL;
- jb 4f;
- ret
- 4:
- neg %eax
- movl $0xffffffff,%edx
- ret
- END(sigprocmask)
- /* ==========================================================================
- * machdep_sys_lseek()
- */
- .globl NAME(lseek);
- NAME(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
- END(lseek)
- /* ==========================================================================
- * machdep_sys_ftruncate() ; Added by Monty
- */
- .globl NAME(ftruncate);
- NAME(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
- END(ftruncate)
- /* ==========================================================================
- * machdep_sys_setjmp()
- */
- .globl NAME(setjmp);
- NAME(setjmp):;
- movl 4(%esp),%eax
- movl 0(%esp),%edx
- movl %edx, 0(%eax) /* rta */
- movl %ebx, 4(%eax)
- movl %esp, 8(%eax)
- movl %ebp,12(%eax)
- movl %esi,16(%eax)
- movl %edi,20(%eax)
- xorl %eax,%eax
- ret
- END(setjmp)
- /* ==========================================================================
- * machdep_sys_longjmp()
- */
- .globl NAME(longjmp);
- NAME(longjmp):;
- movl 4(%esp),%edx
- movl 8(%esp),%eax
- movl 0(%edx),%ecx
- movl 4(%edx),%ebx
- movl 8(%edx),%esp
- movl 12(%edx),%ebp
- movl 16(%edx),%esi
- movl 20(%edx),%edi
- testl %eax,%eax
- jnz 1f
- incl %eax
- 1:
- movl %ecx,0(%esp)
- ret
- END(longjmp)