Home | History | Annotate | Line # | Download | only in sys
syscall.S revision 1.10 
      1  1.10      ross /*	$NetBSD: syscall.S,v 1.10 2002/03/20 22:06:19 ross Exp $	*/
      2   1.6  christos 
      3   1.1       cgd /*-
      4   1.1       cgd  * Copyright (c) 1990 The Regents of the University of California.
      5   1.1       cgd  * All rights reserved.
      6   1.1       cgd  *
      7   1.1       cgd  * This code is derived from software contributed to Berkeley by
      8   1.1       cgd  * William Jolitz.
      9   1.1       cgd  *
     10   1.1       cgd  * Redistribution and use in source and binary forms, with or without
     11   1.1       cgd  * modification, are permitted provided that the following conditions
     12   1.1       cgd  * are met:
     13   1.1       cgd  * 1. Redistributions of source code must retain the above copyright
     14   1.1       cgd  *    notice, this list of conditions and the following disclaimer.
     15   1.1       cgd  * 2. Redistributions in binary form must reproduce the above copyright
     16   1.1       cgd  *    notice, this list of conditions and the following disclaimer in the
     17   1.1       cgd  *    documentation and/or other materials provided with the distribution.
     18   1.1       cgd  * 3. All advertising materials mentioning features or use of this software
     19   1.1       cgd  *    must display the following acknowledgement:
     20   1.1       cgd  *	This product includes software developed by the University of
     21   1.1       cgd  *	California, Berkeley and its contributors.
     22   1.1       cgd  * 4. Neither the name of the University nor the names of its contributors
     23   1.1       cgd  *    may be used to endorse or promote products derived from this software
     24   1.1       cgd  *    without specific prior written permission.
     25   1.1       cgd  *
     26   1.1       cgd  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     27   1.1       cgd  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     28   1.1       cgd  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     29   1.1       cgd  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     30   1.1       cgd  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     31   1.1       cgd  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     32   1.1       cgd  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     33   1.1       cgd  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     34   1.1       cgd  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     35   1.1       cgd  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     36   1.1       cgd  * SUCH DAMAGE.
     37   1.2       jtc  *
     38   1.2       jtc  *	from: @(#)syscall.s	5.1 (Berkeley) 4/23/90
     39   1.1       cgd  */
     40   1.1       cgd 
     41   1.6  christos #include <machine/asm.h>
     42   1.1       cgd #if defined(SYSLIBC_SCCS) && !defined(lint)
     43  1.10      ross 	RCSID("$NetBSD: syscall.S,v 1.10 2002/03/20 22:06:19 ross Exp $")
     44   1.1       cgd #endif /* SYSLIBC_SCCS and not lint */
     45   1.1       cgd 
     46   1.1       cgd #include "SYS.h"
     47   1.1       cgd 
     48   1.1       cgd ENTRY(syscall)
     49   1.1       cgd 	pop	%ecx	/* rta */
     50   1.1       cgd 	pop	%eax	/* syscall number */
     51   1.1       cgd 	push	%ecx
     52   1.5   mycroft 	int	$0x80
     53   1.1       cgd 	push	%ecx	/* Keep stack frame consistant */
     54   1.4   mycroft 	jc	err
     55   1.1       cgd 	ret
     56   1.4   mycroft err:
     57   1.4   mycroft #ifdef PIC
     58   1.8  christos 	PIC_PROLOGUE
     59   1.9   mycroft 	mov	PIC_GOT(CERROR), %ecx
     60   1.9   mycroft 	PIC_EPILOGUE
     61  1.10      ross 	jmp	*%ecx
     62   1.4   mycroft #else
     63   1.7    kleink 	jmp	CERROR
     64   1.4   mycroft #endif
     65