asm.h revision 1.14.10.1
1 /* $NetBSD: asm.h,v 1.14.10.1 2012/11/28 22:40:28 matt 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 __BIT(n) (1 << (n)) 43 #define __BITS(hi,lo) ((~((~0)<<((hi)+1)))&((~0)<<(lo))) 44 45 #define _C_LABEL(x) x 46 #define _ASM_LABEL(x) x 47 48 #ifdef __STDC__ 49 # define __CONCAT(x,y) x ## y 50 # define __STRING(x) #x 51 #else 52 # define __CONCAT(x,y) x/**/y 53 # define __STRING(x) "x" 54 #endif 55 56 #ifndef _ALIGN_TEXT 57 # define _ALIGN_TEXT .align 0 58 #endif 59 60 /* 61 * gas/arm uses @ as a single comment character and thus cannot be used here 62 * Instead it recognised the # instead of an @ symbols in .type directives 63 * We define a couple of macros so that assembly code will not be dependent 64 * on one or the other. 65 */ 66 #define _ASM_TYPE_FUNCTION %function 67 #define _ASM_TYPE_OBJECT %object 68 #ifdef __thumb__ 69 #define _ENTRY(x) \ 70 .text; _ALIGN_TEXT; .globl x; .type x,_ASM_TYPE_FUNCTION; .thumb_func; x: 71 #else 72 #define _ENTRY(x) \ 73 .text; _ALIGN_TEXT; .globl x; .type x,_ASM_TYPE_FUNCTION; x: 74 #endif 75 #define _END(x) .size x,.-x 76 77 #ifdef GPROF 78 # define _PROF_PROLOGUE \ 79 mov ip, lr; bl __mcount 80 #else 81 # define _PROF_PROLOGUE 82 #endif 83 84 #define ENTRY(y) _ENTRY(_C_LABEL(y)); _PROF_PROLOGUE 85 #define ENTRY_NP(y) _ENTRY(_C_LABEL(y)) 86 #define END(y) _END(_C_LABEL(y)) 87 #define ASENTRY(y) _ENTRY(_ASM_LABEL(y)); _PROF_PROLOGUE 88 #define ASENTRY_NP(y) _ENTRY(_ASM_LABEL(y)) 89 #define ASEND(y) _END(_ASM_LABEL(y)) 90 91 #define ASMSTR .asciz 92 93 #if defined(PIC) 94 #ifdef __thumb__ 95 #define PLT_SYM(x) x 96 #define GOT_SYM(x) PIC_SYM(x, GOTOFF) 97 #define GOT_GET(x,got,sym) \ 98 ldr x, sym; \ 99 add x, got; \ 100 ldr x, [x] 101 #else 102 #define PLT_SYM(x) PIC_SYM(x, PLT) 103 #define GOT_SYM(x) PIC_SYM(x, GOT) 104 #define GOT_GET(x,got,sym) \ 105 ldr x, sym; \ 106 ldr x, [x, got] 107 #endif /* __thumb__ */ 108 109 #define GOT_INIT(got,gotsym,pclabel) \ 110 ldr got, gotsym; \ 111 add got, got, pc; \ 112 pclabel: 113 #define GOT_INITSYM(gotsym,pclabel) \ 114 gotsym: .word _C_LABEL(_GLOBAL_OFFSET_TABLE_) + (. - (pclabel+4)) 115 116 #ifdef __STDC__ 117 #define PIC_SYM(x,y) x ## ( ## y ## ) 118 #else 119 #define PIC_SYM(x,y) x/**/(/**/y/**/) 120 #endif 121 122 #else 123 #define PLT_SYM(x) x 124 #define GOT_SYM(x) x 125 #define GOT_GET(x,got,sym) \ 126 ldr x, sym; 127 #define GOT_INIT(got,gotsym,pclabel) 128 #define GOT_INITSYM(gotsym,pclabel) 129 #define PIC_SYM(x,y) x 130 #endif /* PIC */ 131 132 #define RCSID(x) .pushsection ".ident"; .asciz x; .popsection 133 134 #define WEAK_ALIAS(alias,sym) \ 135 .weak alias; \ 136 alias = sym 137 138 /* 139 * STRONG_ALIAS: create a strong alias. 140 */ 141 #define STRONG_ALIAS(alias,sym) \ 142 .globl alias; \ 143 alias = sym 144 145 #ifdef __STDC__ 146 #define WARN_REFERENCES(sym,msg) \ 147 .pushsection .gnu.warning. ## sym; \ 148 .ascii msg; \ 149 .popsection 150 #else 151 #define WARN_REFERENCES(sym,msg) \ 152 .pushsection .gnu.warning./**/sym; \ 153 .ascii msg; \ 154 .popsection 155 #endif /* __STDC__ */ 156 157 #ifdef __thumb__ 158 # define XPUSH push 159 # define XPOP pop 160 # define XPOPRET pop {pc} 161 #else 162 # define XPUSH stmfd sp!, 163 # define XPOP ldmfd sp!, 164 # ifdef _ARM_ARCH_5 165 # define XPOPRET ldmfd sp!, {pc} 166 # else 167 # define XPOPRET ldmfd sp!, {lr}; mov pc, lr 168 # endif 169 #endif 170 171 #if defined (_ARM_ARCH_4T) 172 # define RET bx lr 173 # define RETc(c) __CONCAT(bx,c) lr 174 #else 175 # define RET mov pc, lr 176 # define RETc(c) __CONCAT(mov,c) pc, lr 177 #endif 178 179 .macro lsl a,b,c 180 mov \a, \b, lsl \c 181 .endm 182 .macro lsrs a,b,c 183 movs \a, \b, lsr \c 184 .endm 185 .macro lsr a,b,c 186 mov \a, \b, lsr \c 187 .endm 188 189 #endif /* !_ARM_ASM_H_ */ 190
Indexes created Thu Oct 02 14:10:14 GMT 2025