asm.h revision 1.12.16.1
1 /* $NetBSD: asm.h,v 1.12.16.1 2011/03/05 20:49:35 rmind 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 37 #ifndef _ARM32_ASM_H_ 38 #define _ARM32_ASM_H_ 39 40 #include <arm/cdefs.h> 41 42 #define _C_LABEL(x) x 43 #define _ASM_LABEL(x) x 44 45 #ifdef __STDC__ 46 # define __CONCAT(x,y) x ## y 47 # define __STRING(x) #x 48 #else 49 # define __CONCAT(x,y) x/**/y 50 # define __STRING(x) "x" 51 #endif 52 53 #ifndef _ALIGN_TEXT 54 # define _ALIGN_TEXT .align 0 55 #endif 56 57 /* 58 * gas/arm uses @ as a single comment character and thus cannot be used here 59 * Instead it recognised the # instead of an @ symbols in .type directives 60 * We define a couple of macros so that assembly code will not be dependant 61 * on one or the other. 62 */ 63 #define _ASM_TYPE_FUNCTION %function 64 #define _ASM_TYPE_OBJECT %object 65 #ifdef __thumb__ 66 #define _ENTRY(x) \ 67 .text; _ALIGN_TEXT; .globl x; .type x,_ASM_TYPE_FUNCTION; .thumb_func; x: 68 #else 69 #define _ENTRY(x) \ 70 .text; _ALIGN_TEXT; .globl x; .type x,_ASM_TYPE_FUNCTION; x: 71 #endif 72 #define _END(x) .size x,.-x 73 74 #ifdef GPROF 75 # define _PROF_PROLOGUE \ 76 mov ip, lr; bl __mcount 77 #else 78 # define _PROF_PROLOGUE 79 #endif 80 81 #define ENTRY(y) _ENTRY(_C_LABEL(y)); _PROF_PROLOGUE 82 #define ENTRY_NP(y) _ENTRY(_C_LABEL(y)) 83 #define END(y) _END(_C_LABEL(y)) 84 #define ASENTRY(y) _ENTRY(_ASM_LABEL(y)); _PROF_PROLOGUE 85 #define ASENTRY_NP(y) _ENTRY(_ASM_LABEL(y)) 86 #define ASEND(y) _END(_ASM_LABEL(y)) 87 88 #define ASMSTR .asciz 89 90 #if defined(PIC) 91 #ifdef __thumb__ 92 #define PLT_SYM(x) x 93 #define GOT_SYM(x) PIC_SYM(x, GOTOFF) 94 #define GOT_GET(x,got,sym) \ 95 ldr x, sym; \ 96 add x, got; \ 97 ldr x, [x] 98 #else 99 #define PLT_SYM(x) PIC_SYM(x, PLT) 100 #define GOT_SYM(x) PIC_SYM(x, GOT) 101 #define GOT_GET(x,got,sym) \ 102 ldr x, sym; \ 103 ldr x, [x, got] 104 #endif /* __thumb__ */ 105 106 #define GOT_INIT(got,gotsym,pclabel) \ 107 ldr got, gotsym; \ 108 add got, got, pc; \ 109 pclabel: 110 #define GOT_INITSYM(gotsym,pclabel) \ 111 gotsym: .word _C_LABEL(_GLOBAL_OFFSET_TABLE_) + (. - (pclabel+4)) 112 113 #ifdef __STDC__ 114 #define PIC_SYM(x,y) x ## ( ## y ## ) 115 #else 116 #define PIC_SYM(x,y) x/**/(/**/y/**/) 117 #endif 118 119 #else 120 #define PLT_SYM(x) x 121 #define GOT_SYM(x) x 122 #define GOT_GET(x,got,sym) \ 123 ldr x, sym; 124 #define GOT_INIT(got,gotsym,pclabel) 125 #define GOT_INITSYM(gotsym,pclabel) 126 #define PIC_SYM(x,y) x 127 #endif /* PIC */ 128 129 #define RCSID(x) .pushsection ".ident"; .asciz x; .popsection 130 131 #define WEAK_ALIAS(alias,sym) \ 132 .weak alias; \ 133 alias = sym 134 135 /* 136 * STRONG_ALIAS: create a strong alias. 137 */ 138 #define STRONG_ALIAS(alias,sym) \ 139 .globl alias; \ 140 alias = sym 141 142 #ifdef __STDC__ 143 #define WARN_REFERENCES(sym,msg) \ 144 .pushsection .gnu.warning. ## sym; \ 145 .ascii msg; \ 146 .popsection 147 #else 148 #define WARN_REFERENCES(sym,msg) \ 149 .pushsection .gnu.warning./**/sym; \ 150 .ascii msg; \ 151 .popsection 152 #endif /* __STDC__ */ 153 154 #ifdef __thumb__ 155 # define XPUSH push 156 # define XPOP pop 157 # define XPOPRET pop {pc} 158 #else 159 # define XPUSH stmfd sp!, 160 # define XPOP ldmfd sp!, 161 # ifdef _ARM_ARCH_5 162 # define XPOPRET ldmfd sp!, {pc} 163 # else 164 # define XPOPRET ldmfd sp!, {lr}; mov pc, lr 165 # endif 166 #endif 167 168 #if defined (_ARM_ARCH_4T) 169 # define RET bx lr 170 # define RETc(c) __CONCAT(bx,c) lr 171 #else 172 # define RET mov pc, lr 173 # define RETc(c) __CONCAT(mov,c) pc, lr 174 #endif 175 176 #endif /* !_ARM_ASM_H_ */ 177
Indexes created Thu Oct 02 14:10:14 GMT 2025