Home | History | Annotate | Download | only in machine
      1 /*	$NetBSD: asm.h,v 1.40 2011/06/16 13:16:20 joerg 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  * William Jolitz.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. Neither the name of the University nor the names of its contributors
     19  *    may be used to endorse or promote products derived from this software
     20  *    without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     32  * SUCH DAMAGE.
     33  *
     34  *	@(#)asm.h	5.5 (Berkeley) 5/7/91
     35  */
     36 
     37 #ifndef _I386_ASM_H_
     38 #define _I386_ASM_H_
     39 
     40 #define PIC_PROLOGUE	\
     41 	pushl	%ebx;	\
     42 	call	666f;	\
     43 666:			\
     44 	popl	%ebx;	\
     45 	addl	$_GLOBAL_OFFSET_TABLE_+[.-666b], %ebx
     46 #define PIC_EPILOGUE	\
     47 	popl	%ebx
     48 #define PIC_PLT(x)	x@PLT
     49 #define PIC_GOT(x)	x@GOT(%ebx)
     50 #define PIC_GOTOFF(x)	x@GOTOFF(%ebx)
     51 
     52 /* let kernels and others override entrypoint alignment */
     53 #if !defined(_ALIGN_TEXT) && !defined(_KERNEL)
     54 # ifdef _STANDALONE
     55 #  define _ALIGN_TEXT .align 1
     56 # elif defined __ELF__
     57 #  define _ALIGN_TEXT .align 16
     58 # else
     59 #  define _ALIGN_TEXT .align 4
     60 # endif
     61 #endif
     62 
     63 #endif /* !_I386_ASM_H_ */
     64