1 /* $NetBSD: asm.h,v 1.5 2003/08/07 16:26:53 agc 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 * from: @(#)asm.h 5.5 (Berkeley) 5/7/91 35 * 36 * $FreeBSD$ 37 */ 38 39 #ifndef _MACHINE_ASM_H_ 40 #define _MACHINE_ASM_H_ 41 #include <sys/cdefs.h> 42 43 #ifdef __ELF__ 44 # define _C_LABEL(x) x 45 #else 46 # ifdef __STDC__ 47 # define _C_LABEL(x) _ ## x 48 # else 49 # define _C_LABEL(x) _/**/x 50 # endif 51 #endif 52 #define _ASM_LABEL(x) x 53 54 #ifndef _JB_MAGIC__SETJMP 55 #define _JB_MAGIC__SETJMP 0x4278f500 56 #define _JB_MAGIC_SETJMP 0x4278f501 57 #endif 58 #if 0 59 #ifdef __STDC__ 60 # define __CONCAT(x,y) x ## y 61 # define __STRING(x) #x 62 #else 63 # define __CONCAT(x,y) x/**/y 64 # define __STRING(x) "x" 65 #endif 66 #endif 67 68 #define I32_bit (1 << 7) /* IRQ disable */ 69 #define F32_bit (1 << 6) /* FIQ disable */ 70 71 #define CPU_CONTROL_32BP_ENABLE 0x00000010 /* P: 32-bit exception handlers */ 72 #define CPU_CONTROL_32BD_ENABLE 0x00000020 /* D: 32-bit addressing */ 73 74 #ifndef _ALIGN_TEXT 75 # define _ALIGN_TEXT .align 0 76 #endif 77 78 /* 79 * gas/arm uses @ as a single comment character and thus cannot be used here 80 * Instead it recognised the # instead of an @ symbols in .type directives 81 * We define a couple of macros so that assembly code will not be dependant 82 * on one or the other. 83 */ 84 #define _ASM_TYPE_FUNCTION #function 85 #define _ASM_TYPE_OBJECT #object 86 #define GLOBAL(X) .globl x 87 #define _ENTRY(x) \ 88 .text; _ALIGN_TEXT; .globl x; .type x,_ASM_TYPE_FUNCTION; x: 89 90 #ifdef GPROF 91 # ifdef __ELF__ 92 # define _PROF_PROLOGUE \ 93 mov ip, lr; bl __mcount 94 # else 95 # define _PROF_PROLOGUE \ 96 mov ip,lr; bl mcount 97 # endif 98 #else 99 # define _PROF_PROLOGUE 100 #endif 101 102 #define ENTRY(y) _ENTRY(_C_LABEL(y)); _PROF_PROLOGUE 103 #define ENTRY_NP(y) _ENTRY(_C_LABEL(y)) 104 #define ASENTRY(y) _ENTRY(_ASM_LABEL(y)); _PROF_PROLOGUE 105 #define ASENTRY_NP(y) _ENTRY(_ASM_LABEL(y)) 106 107 #define ASMSTR .asciz 108 109 #if defined(__ELF__) && defined(PIC) 110 #ifdef __STDC__ 111 #define PIC_SYM(x,y) x ## ( ## y ## ) 112 #else 113 #define PIC_SYM(x,y) x/**/(/**/y/**/) 114 #endif 115 #else 116 #define PIC_SYM(x,y) x 117 #endif 118 119 #undef __FBSDID 120 #if !defined(lint) && !defined(STRIP_FBSDID) 121 #define __FBSDID(s) .ident s 122 #else 123 #define __FBSDID(s) /* nothing */ 124 #endif 125 126 127 #ifdef __ELF__ 128 #define WEAK_ALIAS(alias,sym) \ 129 .weak alias; \ 130 alias = sym 131 #endif 132 133 #ifdef __STDC__ 134 #define WARN_REFERENCES(sym,msg) \ 135 .stabs msg ## ,30,0,0,0 ; \ 136 .stabs __STRING(_C_LABEL(sym)) ## ,1,0,0,0 137 #elif defined(__ELF__) 138 #define WARN_REFERENCES(sym,msg) \ 139 .stabs msg,30,0,0,0 ; \ 140 .stabs __STRING(sym),1,0,0,0 141 #else 142 #define WARN_REFERENCES(sym,msg) \ 143 .stabs msg,30,0,0,0 ; \ 144 .stabs __STRING(_/**/sym),1,0,0,0 145 #endif /* __STDC__ */ 146 147 #endif /* !_MACHINE_ASM_H_ */ 148