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