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SYS.h revision 1.11 
      1 /*	$NetBSD: SYS.h,v 1.11 1999/05/02 23:19:49 kleink Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1990 The Regents of the University of California.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to Berkeley by
      8  * the Systems Programming Group of the University of Utah Computer
      9  * Science Department.
     10  *
     11  * Redistribution and use in source and binary forms, with or without
     12  * modification, are permitted provided that the following conditions
     13  * are met:
     14  * 1. Redistributions of source code must retain the above copyright
     15  *    notice, this list of conditions and the following disclaimer.
     16  * 2. Redistributions in binary form must reproduce the above copyright
     17  *    notice, this list of conditions and the following disclaimer in the
     18  *    documentation and/or other materials provided with the distribution.
     19  * 3. All advertising materials mentioning features or use of this software
     20  *    must display the following acknowledgement:
     21  *	This product includes software developed by the University of
     22  *	California, Berkeley and its contributors.
     23  * 4. Neither the name of the University nor the names of its contributors
     24  *    may be used to endorse or promote products derived from this software
     25  *    without specific prior written permission.
     26  *
     27  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     28  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     29  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     30  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     31  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     32  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     33  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     34  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     35  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     36  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     37  * SUCH DAMAGE.
     38  *
     39  *	from: @(#)SYS.h	5.5 (Berkeley) 5/7/91
     40  */
     41 
     42 #include <sys/syscall.h>
     43 #include <machine/asm.h>
     44 
     45 #ifdef __STDC__
     46 #define	IMMEDIATE	#
     47 #define SYSTRAP(x)	movl IMMEDIATE SYS_ ## x ## ,d0; trap IMMEDIATE 0
     48 #else
     49 #define SYSTRAP(x)	movl #SYS_/**/x,d0; trap #0
     50 #endif
     51 
     52 #ifdef __ELF__
     53 #define CERROR		_C_LABEL(__cerror)
     54 #define CURBRK		_C_LABEL(__curbrk)
     55 #else
     56 #define CERROR		_ASM_LABEL(cerror)
     57 #define CURBRK		_ASM_LABEL(curbrk)
     58 #endif
     59 
     60 #define _SYSCALL_NOERROR(x,y)						\
     61 	ENTRY(x);							\
     62 	SYSTRAP(y)
     63 
     64 #define _SYSCALL(x,y)							\
     65 	.even;								\
     66 	err: jra PIC_PLT(CERROR);					\
     67 	_SYSCALL_NOERROR(x,y);						\
     68 	jcs err
     69 
     70 #define SYSCALL_NOERROR(x)						\
     71 	_SYSCALL_NOERROR(x,x)
     72 
     73 #define SYSCALL(x)							\
     74 	_SYSCALL(x,x)
     75 
     76 #define PSEUDO_NOERROR(x,y)						\
     77 	_SYSCALL_NOERROR(x,y);						\
     78 	rts
     79 
     80 #define PSEUDO(x,y)							\
     81 	_SYSCALL(x,y);							\
     82 	rts
     83 
     84 #define RSYSCALL_NOERROR(x)						\
     85 	PSEUDO_NOERROR(x,x)
     86 
     87 #define RSYSCALL(x)							\
     88 	PSEUDO(x,x)
     89 
     90 #define	ASMSTR		.asciz
     91 
     92 	.globl	CERROR
     93