1129198Scognet/* $NetBSD: asm.h,v 1.5 2003/08/07 16:26:53 agc Exp $ */ 2129198Scognet 3139735Simp/*- 4129198Scognet * Copyright (c) 1990 The Regents of the University of California. 5129198Scognet * All rights reserved. 6129198Scognet * 7129198Scognet * This code is derived from software contributed to Berkeley by 8129198Scognet * William Jolitz. 9129198Scognet * 10129198Scognet * Redistribution and use in source and binary forms, with or without 11129198Scognet * modification, are permitted provided that the following conditions 12129198Scognet * are met: 13129198Scognet * 1. Redistributions of source code must retain the above copyright 14129198Scognet * notice, this list of conditions and the following disclaimer. 15129198Scognet * 2. Redistributions in binary form must reproduce the above copyright 16129198Scognet * notice, this list of conditions and the following disclaimer in the 17129198Scognet * documentation and/or other materials provided with the distribution. 18129198Scognet * 3. Neither the name of the University nor the names of its contributors 19129198Scognet * may be used to endorse or promote products derived from this software 20129198Scognet * without specific prior written permission. 21129198Scognet * 22129198Scognet * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23129198Scognet * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24129198Scognet * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25129198Scognet * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26129198Scognet * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27129198Scognet * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28129198Scognet * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29129198Scognet * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30129198Scognet * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31129198Scognet * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32129198Scognet * SUCH DAMAGE. 33129198Scognet * 34129198Scognet * from: @(#)asm.h 5.5 (Berkeley) 5/7/91 35129198Scognet * 36129198Scognet * $FreeBSD$ 37129198Scognet */ 38129198Scognet 39129198Scognet#ifndef _MACHINE_ASM_H_ 40129198Scognet#define _MACHINE_ASM_H_ 41129198Scognet#include <sys/cdefs.h> 42129198Scognet 43251510Sandrew#define _C_LABEL(x) x 44129198Scognet#define _ASM_LABEL(x) x 45129198Scognet 46129198Scognet#define I32_bit (1 << 7) /* IRQ disable */ 47129198Scognet#define F32_bit (1 << 6) /* FIQ disable */ 48129198Scognet 49129198Scognet#define CPU_CONTROL_32BP_ENABLE 0x00000010 /* P: 32-bit exception handlers */ 50129198Scognet#define CPU_CONTROL_32BD_ENABLE 0x00000020 /* D: 32-bit addressing */ 51129198Scognet 52129198Scognet#ifndef _ALIGN_TEXT 53129198Scognet# define _ALIGN_TEXT .align 0 54129198Scognet#endif 55129198Scognet 56271337Sian#if defined(__ARM_EABI__) && !defined(_STANDALONE) 57248361Sandrew#define STOP_UNWINDING .cantunwind 58248361Sandrew#define _FNSTART .fnstart 59248361Sandrew#define _FNEND .fnend 60248361Sandrew#else 61248361Sandrew#define STOP_UNWINDING 62248361Sandrew#define _FNSTART 63248361Sandrew#define _FNEND 64248361Sandrew#endif 65248361Sandrew 66129198Scognet/* 67129198Scognet * gas/arm uses @ as a single comment character and thus cannot be used here 68129198Scognet * Instead it recognised the # instead of an @ symbols in .type directives 69251510Sandrew * We define a couple of macros so that assembly code will not be dependent 70129198Scognet * on one or the other. 71129198Scognet */ 72129198Scognet#define _ASM_TYPE_FUNCTION #function 73129198Scognet#define _ASM_TYPE_OBJECT #object 74129198Scognet#define GLOBAL(X) .globl x 75129198Scognet#define _ENTRY(x) \ 76248361Sandrew .text; _ALIGN_TEXT; .globl x; .type x,_ASM_TYPE_FUNCTION; x: _FNSTART 77251510Sandrew#define _END(x) .size x, . - x; _FNEND 78248361Sandrew 79269796Sian/* 80269796Sian * EENTRY()/EEND() mark "extra" entry/exit points from a function. 81269796Sian * The unwind info cannot handle the concept of a nested function, or a function 82269796Sian * with multiple .fnstart directives, but some of our assembler code is written 83269796Sian * with multiple labels to allow entry at several points. The EENTRY() macro 84269796Sian * defines such an extra entry point without a new .fnstart, so that it's 85269796Sian * basically just a label that you can jump to. The EEND() macro does nothing 86269796Sian * at all, except document the exit point associated with the same-named entry. 87269796Sian */ 88269796Sian#define _EENTRY(x) .globl x; .type x,_ASM_TYPE_FUNCTION; x: 89269796Sian#define _EEND(x) /* nothing */ 90269796Sian 91129198Scognet#ifdef GPROF 92129198Scognet# define _PROF_PROLOGUE \ 93169768Scognet mov ip, lr; bl __mcount 94129198Scognet#else 95129198Scognet# define _PROF_PROLOGUE 96129198Scognet#endif 97129198Scognet 98129198Scognet#define ENTRY(y) _ENTRY(_C_LABEL(y)); _PROF_PROLOGUE 99269796Sian#define EENTRY(y) _EENTRY(_C_LABEL(y)); _PROF_PROLOGUE 100129198Scognet#define ENTRY_NP(y) _ENTRY(_C_LABEL(y)) 101269796Sian#define EENTRY_NP(y) _EENTRY(_C_LABEL(y)) 102251510Sandrew#define END(y) _END(_C_LABEL(y)) 103269796Sian#define EEND(y) 104129198Scognet#define ASENTRY(y) _ENTRY(_ASM_LABEL(y)); _PROF_PROLOGUE 105269796Sian#define ASEENTRY(y) _EENTRY(_ASM_LABEL(y)); _PROF_PROLOGUE 106129198Scognet#define ASENTRY_NP(y) _ENTRY(_ASM_LABEL(y)) 107269796Sian#define ASEENTRY_NP(y) _EENTRY(_ASM_LABEL(y)) 108251510Sandrew#define ASEND(y) _END(_ASM_LABEL(y)) 109269796Sian#define ASEEND(y) 110129198Scognet 111129198Scognet#define ASMSTR .asciz 112129198Scognet 113251510Sandrew#if defined(PIC) 114251510Sandrew#define PLT_SYM(x) PIC_SYM(x, PLT) 115251510Sandrew#define GOT_SYM(x) PIC_SYM(x, GOT) 116251510Sandrew#define GOT_GET(x,got,sym) \ 117251510Sandrew ldr x, sym; \ 118251510Sandrew ldr x, [x, got] 119251510Sandrew#define GOT_INIT(got,gotsym,pclabel) \ 120251510Sandrew ldr got, gotsym; \ 121251510Sandrew add got, got, pc; \ 122251510Sandrew pclabel: 123251510Sandrew#define GOT_INITSYM(gotsym,pclabel) \ 124251510Sandrew gotsym: .word _C_LABEL(_GLOBAL_OFFSET_TABLE_) + (. - (pclabel+4)) 125251510Sandrew 126129198Scognet#ifdef __STDC__ 127129198Scognet#define PIC_SYM(x,y) x ## ( ## y ## ) 128129198Scognet#else 129129198Scognet#define PIC_SYM(x,y) x/**/(/**/y/**/) 130129198Scognet#endif 131251510Sandrew 132129198Scognet#else 133251510Sandrew#define PLT_SYM(x) x 134251510Sandrew#define GOT_SYM(x) x 135251510Sandrew#define GOT_GET(x,got,sym) \ 136251510Sandrew ldr x, sym; 137251510Sandrew#define GOT_INIT(got,gotsym,pclabel) 138251510Sandrew#define GOT_INITSYM(gotsym,pclabel) 139129198Scognet#define PIC_SYM(x,y) x 140251510Sandrew#endif /* PIC */ 141129198Scognet 142129198Scognet#undef __FBSDID 143129198Scognet#if !defined(lint) && !defined(STRIP_FBSDID) 144129198Scognet#define __FBSDID(s) .ident s 145129198Scognet#else 146129198Scognet#define __FBSDID(s) /* nothing */ 147129198Scognet#endif 148129198Scognet 149129198Scognet 150129198Scognet#define WEAK_ALIAS(alias,sym) \ 151129198Scognet .weak alias; \ 152129198Scognet alias = sym 153129198Scognet 154129198Scognet#ifdef __STDC__ 155129198Scognet#define WARN_REFERENCES(sym,msg) \ 156129198Scognet .stabs msg ## ,30,0,0,0 ; \ 157129198Scognet .stabs __STRING(_C_LABEL(sym)) ## ,1,0,0,0 158251510Sandrew#else 159129198Scognet#define WARN_REFERENCES(sym,msg) \ 160129198Scognet .stabs msg,30,0,0,0 ; \ 161129198Scognet .stabs __STRING(sym),1,0,0,0 162129198Scognet#endif /* __STDC__ */ 163129198Scognet 164239268Sgonzo/* Exactly one of the __ARM_ARCH_*__ macros will be defined by the compiler. */ 165239268Sgonzo/* The _ARM_ARCH_* macros are deprecated and will be removed soon. */ 166239268Sgonzo/* This should be moved into another header so it can be used in 167239268Sgonzo * both asm and C code. machine/asm.h cannot be included in C code. */ 168239268Sgonzo#if defined (__ARM_ARCH_7__) || defined (__ARM_ARCH_7A__) 169239268Sgonzo#define _ARM_ARCH_7 170239268Sgonzo#define _HAVE_ARMv7_INSTRUCTIONS 1 171239268Sgonzo#endif 172137462Scognet 173239268Sgonzo#if defined (_HAVE_ARMv7_INSTRUCTIONS) || defined (__ARM_ARCH_6__) || \ 174239268Sgonzo defined (__ARM_ARCH_6J__) || defined (__ARM_ARCH_6K__) || \ 175239268Sgonzo defined (__ARM_ARCH_6Z__) || defined (__ARM_ARCH_6ZK__) 176137462Scognet#define _ARM_ARCH_6 177239268Sgonzo#define _HAVE_ARMv6_INSTRUCTIONS 1 178137462Scognet#endif 179137462Scognet 180239268Sgonzo#if defined (_HAVE_ARMv6_INSTRUCTIONS) || defined (__ARM_ARCH_5TE__) || \ 181172613Scognet defined (__ARM_ARCH_5TEJ__) || defined (__ARM_ARCH_5E__) 182239268Sgonzo#define _ARM_ARCH_5E 183239268Sgonzo#define _HAVE_ARMv5E_INSTRUCTIONS 1 184137462Scognet#endif 185137462Scognet 186239268Sgonzo#if defined (_HAVE_ARMv5E_INSTRUCTIONS) || defined (__ARM_ARCH_5__) || \ 187239268Sgonzo defined (__ARM_ARCH_5T__) 188239268Sgonzo#define _ARM_ARCH_5 189239268Sgonzo#define _HAVE_ARMv5_INSTRUCTIONS 1 190172613Scognet#endif 191172613Scognet 192239268Sgonzo#if defined (_HAVE_ARMv5_INSTRUCTIONS) || defined (__ARM_ARCH_4T__) 193137462Scognet#define _ARM_ARCH_4T 194239268Sgonzo#define _HAVE_ARMv4T_INSTRUCTIONS 1 195137462Scognet#endif 196137462Scognet 197239268Sgonzo/* FreeBSD requires ARMv4, so this is always set. */ 198239268Sgonzo#define _HAVE_ARMv4_INSTRUCTIONS 1 199137462Scognet 200239268Sgonzo#if defined (_HAVE_ARMv4T_INSTRUCTIONS) 201137462Scognet# define RET bx lr 202137462Scognet# define RETeq bxeq lr 203137462Scognet# define RETne bxne lr 204239268Sgonzo# define RETc(c) bx##c lr 205137462Scognet#else 206137462Scognet# define RET mov pc, lr 207137462Scognet# define RETeq moveq pc, lr 208137462Scognet# define RETne movne pc, lr 209239268Sgonzo# define RETc(c) mov##c pc, lr 210137462Scognet#endif 211137462Scognet 212129198Scognet#endif /* !_MACHINE_ASM_H_ */ 213