Home | History | Annotate | Line # | Download | only in i386
SYS.h revision 1.1 
      1 /*-
      2  * Copyright (c) 1990 The Regents of the University of California.
      3  * All rights reserved.
      4  *
      5  * This code is derived from software contributed to Berkeley by
      6  * William Jolitz.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  * 3. All advertising materials mentioning features or use of this software
     17  *    must display the following acknowledgement:
     18  *	This product includes software developed by the University of
     19  *	California, Berkeley and its contributors.
     20  * 4. Neither the name of the University nor the names of its contributors
     21  *    may be used to endorse or promote products derived from this software
     22  *    without specific prior written permission.
     23  *
     24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     34  * SUCH DAMAGE.
     35  *
     36  *	from: @(#)SYS.h	5.5 (Berkeley) 5/7/91
     37  *	$Id: SYS.h,v 1.1 1993/10/07 00:18:55 cgd Exp $
     38  */
     39 
     40 #include <machine/asm.h>
     41 #include <sys/syscall.h>
     42 
     43 #ifdef PIC
     44 #define PIC_PROLOGUE	\
     45 	pushl	%ebx;	\
     46 	call	1f;	\
     47 1:			\
     48 	popl	%ebx;	\
     49 	addl	$_GLOBAL_OFFSET_TABLE_+[.-1b], %ebx
     50 #define PIC_EPILOGUE	\
     51 	popl	%ebx
     52 #define PIC_PLT(x)	x@PLT
     53 #define PIC_GOT(x)	x@GOT(%ebx)
     54 #define PIC_GOTOFF(x)	x@GOTOFF(%ebx)
     55 #else
     56 #define PIC_PROLOGUE
     57 #define PIC_EPILOGUE
     58 #define PIC_PLT(x)	x
     59 #define PIC_GOT(x)	x
     60 #define PIC_GOTOFF(x)	x
     61 #endif
     62 
     63 #define	SYSCALL(x)	2: jmp cerror; ENTRY(x); lea SYS_/**/x,%eax; LCALL(7,0); jb 2b
     64 #define	RSYSCALL(x)	SYSCALL(x); ret
     65 #define	PSEUDO(x,y)	ENTRY(x); lea SYS_/**/y, %eax; ; LCALL(7,0); ret
     66 #define	CALL(x,y)	call _/**/y; addl $4*x,%esp
     67 /* gas fucks up offset -- although we don't currently need it, do for BCS */
     68 #define	LCALL(x,y)	.byte 0x9a ; .long y; .word x
     69 
     70 	.globl	cerror
     71