asm.h revision 137462
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: head/sys/arm/include/asm.h 137462 2004-11-09 16:45:55Z cognet $ 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# define _PROF_PROLOGUE \ 92 mov ip, lr; bl _mcount 93#else 94# define _PROF_PROLOGUE 95#endif 96 97#define ENTRY(y) _ENTRY(_C_LABEL(y)); _PROF_PROLOGUE 98#define ENTRY_NP(y) _ENTRY(_C_LABEL(y)) 99#define ASENTRY(y) _ENTRY(_ASM_LABEL(y)); _PROF_PROLOGUE 100#define ASENTRY_NP(y) _ENTRY(_ASM_LABEL(y)) 101 102#define ASMSTR .asciz 103 104#if defined(__ELF__) && defined(PIC) 105#ifdef __STDC__ 106#define PIC_SYM(x,y) x ## ( ## y ## ) 107#else 108#define PIC_SYM(x,y) x/**/(/**/y/**/) 109#endif 110#else 111#define PIC_SYM(x,y) x 112#endif 113 114#undef __FBSDID 115#if !defined(lint) && !defined(STRIP_FBSDID) 116#define __FBSDID(s) .ident s 117#else 118#define __FBSDID(s) /* nothing */ 119#endif 120 121 122#ifdef __ELF__ 123#define WEAK_ALIAS(alias,sym) \ 124 .weak alias; \ 125 alias = sym 126#endif 127 128#ifdef __STDC__ 129#define WARN_REFERENCES(sym,msg) \ 130 .stabs msg ## ,30,0,0,0 ; \ 131 .stabs __STRING(_C_LABEL(sym)) ## ,1,0,0,0 132#elif defined(__ELF__) 133#define WARN_REFERENCES(sym,msg) \ 134 .stabs msg,30,0,0,0 ; \ 135 .stabs __STRING(sym),1,0,0,0 136#else 137#define WARN_REFERENCES(sym,msg) \ 138 .stabs msg,30,0,0,0 ; \ 139 .stabs __STRING(_/**/sym),1,0,0,0 140#endif /* __STDC__ */ 141 142 143#if defined (__ARM_ARCH_6__) || defined (__ARM_ARCH_6J__) 144#define _ARM_ARCH_6 145#endif 146 147#if defined (_ARM_ARCH_6) || defined (__ARM_ARCH_5__) || \ 148 defined (__ARM_ARCH_5T__) || defined (__ARM_ARCH_5TE__) || \ 149 defined (__ARM_ARCH_5TEJ__) 150#define _ARM_ARCH_5 151#endif 152 153#if defined (_ARM_ARCH_5) || defined (__ARM_ARCH_4T__) 154#define _ARM_ARCH_4T 155#endif 156 157 158#if defined (_ARM_ARCH_4T) 159# define RET bx lr 160# define RETeq bxeq lr 161# define RETne bxne lr 162# ifdef __STDC__ 163# define RETc(c) bx##c lr 164# else 165# define RETc(c) bx/**/c lr 166# endif 167#else 168# define RET mov pc, lr 169# define RETeq moveq pc, lr 170# define RETne movne pc, lr 171# ifdef __STDC__ 172# define RETc(c) mov##c pc, lr 173# else 174# define RETc(c) mov/**/c pc, lr 175# endif 176#endif 177 178#endif /* !_MACHINE_ASM_H_ */ 179