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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)