1 /* $NetBSD: asm.h,v 1.20 2002/01/13 12:44:31 drochner 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. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * @(#)asm.h 5.5 (Berkeley) 5/7/91 39 */ 40 41 #ifndef _I386_ASM_H_ 42 #define _I386_ASM_H_ 43 44 #ifdef PIC 45 #define PIC_PROLOGUE \ 46 pushl %ebx; \ 47 call 1f; \ 48 1: \ 49 popl %ebx; \ 50 addl $_GLOBAL_OFFSET_TABLE_+[.-1b], %ebx 51 #define PIC_EPILOGUE \ 52 popl %ebx 53 #define PIC_PLT(x) x@PLT 54 #define PIC_GOT(x) x@GOT(%ebx) 55 #define PIC_GOTOFF(x) x@GOTOFF(%ebx) 56 #else 57 #define PIC_PROLOGUE 58 #define PIC_EPILOGUE 59 #define PIC_PLT(x) x 60 #define PIC_GOT(x) x 61 #define PIC_GOTOFF(x) x 62 #endif 63 64 #ifdef __ELF__ 65 # define _C_LABEL(x) x 66 #else 67 # ifdef __STDC__ 68 # define _C_LABEL(x) _ ## x 69 # else 70 # define _C_LABEL(x) _/**/x 71 # endif 72 #endif 73 #define _ASM_LABEL(x) x 74 75 #ifdef __STDC__ 76 # define __CONCAT(x,y) x ## y 77 # define __STRING(x) #x 78 #else 79 # define __CONCAT(x,y) x/**/y 80 # define __STRING(x) "x" 81 #endif 82 83 /* let kernels and others override entrypoint alignment */ 84 #ifndef _ALIGN_TEXT 85 # ifdef __ELF__ 86 # define _ALIGN_TEXT .align 4 87 # else 88 # define _ALIGN_TEXT .align 2 89 # endif 90 #endif 91 92 #define _ENTRY(x) \ 93 .text; _ALIGN_TEXT; .globl x; .type x,@function; x: 94 95 #ifdef GPROF 96 # ifdef __ELF__ 97 # define _PROF_PROLOGUE \ 98 pushl %ebp; movl %esp,%ebp; call PIC_PLT(__mcount); popl %ebp 99 # else 100 # define _PROF_PROLOGUE \ 101 pushl %ebp; movl %esp,%ebp; call PIC_PLT(mcount); popl %ebp 102 # endif 103 #else 104 # define _PROF_PROLOGUE 105 #endif 106 107 #define ENTRY(y) _ENTRY(_C_LABEL(y)); _PROF_PROLOGUE 108 #define NENTRY(y) _ENTRY(_C_LABEL(y)) 109 #define ASENTRY(y) _ENTRY(_ASM_LABEL(y)); _PROF_PROLOGUE 110 111 #define ASMSTR .asciz 112 113 #ifdef __ELF__ 114 #define RCSID(x) .section ".ident"; .asciz x 115 #else 116 #define RCSID(x) .text; .asciz x 117 #endif 118 119 #ifdef NO_KERNEL_RCSIDS 120 #define __KERNEL_RCSID(_n, _s) /* nothing */ 121 #else 122 #define __KERNEL_RCSID(_n, _s) RCSID(_s) 123 #endif 124 125 #ifdef __ELF__ 126 #define WEAK_ALIAS(alias,sym) \ 127 .weak alias; \ 128 alias = sym 129 #endif 130 131 #ifdef __STDC__ 132 #define WARN_REFERENCES(sym,msg) \ 133 .stabs msg ## ,30,0,0,0 ; \ 134 .stabs __STRING(_C_LABEL(sym)) ## ,1,0,0,0 135 #elif defined(__ELF__) 136 #define WARN_REFERENCES(sym,msg) \ 137 .stabs msg,30,0,0,0 ; \ 138 .stabs __STRING(sym),1,0,0,0 139 #else 140 #define WARN_REFERENCES(sym,msg) \ 141 .stabs msg,30,0,0,0 ; \ 142 .stabs __STRING(_/**/sym),1,0,0,0 143 #endif /* __STDC__ */ 144 145 #endif /* !_I386_ASM_H_ */ 146