| Dan Albert | 287553d | 2017-02-16 10:47:51 -0800 | [diff] [blame] | 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_ */ |