asm.h revision 1.14.2.1
1 /* $NetBSD: asm.h,v 1.14.2.1 2012/10/30 17:19:04 yamt 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 #endif /* !_ARM_ASM_H_ */ 180
Indexes created Thu Oct 02 14:10:14 GMT 2025