1 /* $OpenBSD: asm.h,v 1.4 2000/08/05 22:07:31 niklas Exp $ */ 2 /* $NetBSD: asm.h,v 1.7 1994/10/27 04:15:56 cgd Exp $ */ 3 4 /*- 5 * Copyright (c) 1990 The Regents of the University of California. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * William Jolitz. 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 * @(#)asm.h 5.5 (Berkeley) 5/7/91 40 */ 41 42 #ifndef _I386_ASM_H_ 43 #define _I386_ASM_H_ 44 45 #ifdef PIC 46 #define PIC_PROLOGUE \ 47 pushl %ebx; \ 48 call 1f; \ 49 1: \ 50 popl %ebx; \ 51 addl $_GLOBAL_OFFSET_TABLE_+[.-1b], %ebx 52 #define PIC_EPILOGUE \ 53 popl %ebx 54 #define PIC_PLT(x) x@PLT 55 #define PIC_GOT(x) x@GOT(%ebx) 56 #define PIC_GOTOFF(x) x@GOTOFF(%ebx) 57 #else 58 #define PIC_PROLOGUE 59 #define PIC_EPILOGUE 60 #define PIC_PLT(x) x 61 #define PIC_GOT(x) x 62 #define PIC_GOTOFF(x) x 63 #endif 64 65 #ifdef __STDC__ 66 # define _C_LABEL(x) _ ## x 67 #else 68 # define _C_LABEL(x) _/**/x 69 #endif 70 #define _ASM_LABEL(x) x 71 72 /* let kernels and others override entrypoint alignment */ 73 #ifndef _ALIGN_TEXT 74 # define _ALIGN_TEXT .align 2, 0x90 75 #endif 76 77 #define _ENTRY(x) \ 78 .text; _ALIGN_TEXT; .globl x; .type x,@function; x: 79 80 #ifdef GPROF 81 # define _PROF_PROLOGUE \ 82 pushl %ebp; movl %esp,%ebp; call PIC_PLT(mcount); popl %ebp 83 #else 84 # define _PROF_PROLOGUE 85 #endif 86 87 #define ENTRY(y) _ENTRY(_C_LABEL(y)); _PROF_PROLOGUE 88 #define NENTRY(y) _ENTRY(_C_LABEL(y)) 89 #define ASENTRY(y) _ENTRY(_ASM_LABEL(y)); _PROF_PROLOGUE 90 91 #define ALTENTRY(name) .globl _C_LABEL(name); _C_LABEL(name): 92 93 #define ASMSTR .asciz 94 95 #define RCSID(x) .text; .asciz x 96 97 #endif /* !_I386_ASM_H_ */ 98