systrap.h

微内核软实时操作系统

/*
 * Copyright (c) 2005, Kohsuke Ohtani
 * All rights reserved.
 *
 * 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. Neither the name of the author nor the names of any co-contributors 
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
 */

#define SYSCALL0(name) \
	.global name; .align 4,0x90; \
name##: movl	$(SYS_##name), %eax; \
	int	$0x40; \
	ret

#define SYSCALL1(name) \
	.global name; .align 4,0x90; \
name##: pushl	%ebx; \
	movl	8(%esp), %ebx; \
	movl	$(SYS_##name), %eax; \
	int	$0x40; \
	popl	%ebx; \
	ret

#define SYSCALL2(name) \
	.global name; .align 4,0x90; \
name##: pushl	%ebx; \
	movl	8(%esp), %ebx; \
	movl	12(%esp), %ecx; \
	movl	$(SYS_##name), %eax; \
	int	$0x40; \
	popl	%ebx; \
	ret

#define SYSCALL3(name) \
	.global name; .align 4,0x90; \
name##: pushl	%ebx; \
	movl	8(%esp), %ebx; \
	movl	12(%esp), %ecx; \
	movl	16(%esp), %edx; \
	movl	$(SYS_##name), %eax; \
	int	$0x40; \
	popl	%ebx; \
	ret

#define SYSCALL4(name) \
	.global name; .align 4,0x90; \
name##: pushl	%esi; \
	pushl	%ebx; \
	movl	12(%esp), %ebx; \
	movl	16(%esp), %ecx; \
	movl	20(%esp), %edx; \
	movl	24(%esp), %esi; \
	movl	$(SYS_##name), %eax; \
	int	$0x40; \
	popl	%ebx; \
	popl	%esi; \
	ret