asm.h revision 1.12.12.1
1 /* $NetBSD: asm.h,v 1.12.12.1 2014/02/15 16:18:36 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 /* .syntax unified */ 43 44 #ifdef __thumb__ 45 #define THUMB_INSN(n) n 46 #else 47 #define THUMB_INSN(n) 48 #endif 49 50 #define UPPER16(n) (((n) >> 16) & 0xffff) 51 #define LOWER16(n) ((n) & 0xffff) 52 53 #define __BIT(n) (1 << (n)) 54 #define __BITS(hi,lo) ((~((~0)<<((hi)+1)))&((~0)<<(lo))) 55 56 #define _C_LABEL(x) x 57 #define _ASM_LABEL(x) x 58 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 67 #ifndef _ALIGN_TEXT 68 # define _ALIGN_TEXT .align 2 69 #endif 70 71 #ifndef _TEXT_SECTION 72 #define _TEXT_SECTION .text 73 #endif 74 /* 75 * gas/arm uses @ as a single comment character and thus cannot be used here 76 * Instead it recognised the # instead of an @ symbols in .type directives 77 * We define a couple of macros so that assembly code will not be dependent 78 * on one or the other. 79 */ 80 #define _ASM_TYPE_FUNCTION %function 81 #define _ASM_TYPE_OBJECT %object 82 #define _THUMB_ENTRY(x) \ 83 _TEXT_SECTION; _ALIGN_TEXT; .globl x; .type x,_ASM_TYPE_FUNCTION; \ 84 .thumb_func; .code 16; x: 85 #define _ARM_ENTRY(x) \ 86 _TEXT_SECTION; _ALIGN_TEXT; .globl x; .type x,_ASM_TYPE_FUNCTION; \ 87 .code 32; x: 88 #ifdef __thumb__ 89 #define _ENTRY(x) _THUMB_ENTRY(x) 90 #else 91 #define _ENTRY(x) _ARM_ENTRY(x) 92 #endif 93 #define _END(x) .size x,.-x 94 95 #ifdef GPROF 96 # define _PROF_PROLOGUE \ 97 mov ip, lr; bl __mcount 98 #else 99 # define _PROF_PROLOGUE 100 #endif 101 102 #define ENTRY(y) _ENTRY(_C_LABEL(y)); _PROF_PROLOGUE 103 #define ENTRY_NP(y) _ENTRY(_C_LABEL(y)) 104 #define END(y) _END(_C_LABEL(y)) 105 #define ARM_ENTRY(y) _ARM_ENTRY(_C_LABEL(y)); _PROF_PROLOGUE 106 #define ARM_ENTRY_NP(y) _ARM_ENTRY(_C_LABEL(y)) 107 #define THUMB_ENTRY(y) _THUMB_ENTRY(_C_LABEL(y)); _PROF_PROLOGUE 108 #define THUMB_ENTRY_NP(y) _THUMB_ENTRY(_C_LABEL(y)) 109 #define END(y) _END(_C_LABEL(y)) 110 #define ASENTRY(y) _ENTRY(_ASM_LABEL(y)); _PROF_PROLOGUE 111 #define ASENTRY_NP(y) _ENTRY(_ASM_LABEL(y)) 112 #define ASEND(y) _END(_ASM_LABEL(y)) 113 #define ARM_ASENTRY(y) _ARM_ENTRY(_ASM_LABEL(y)); _PROF_PROLOGUE 114 #define ARM_ASENTRY_NP(y) _ARM_ENTRY(_ASM_LABEL(y)) 115 #define THUMB_ASENTRY(y) _THUMB_ENTRY(_ASM_LABEL(y)); _PROF_PROLOGUE 116 #define THUMB_ASENTRY_NP(y) _THUMB_ENTRY(_ASM_LABEL(y)) 117 118 #define ASMSTR .asciz 119 120 #ifdef __PIC__ 121 #define REL_SYM(a, b) ((a) - (b)) 122 #define PLT_SYM(x) x 123 #define GOT_SYM(x) PIC_SYM(x, GOT) 124 #define GOT_GET(x,got,sym) \ 125 ldr x, sym; \ 126 ldr x, [x, got] 127 #define GOT_INIT(got,gotsym,pclabel) \ 128 ldr got, gotsym; \ 129 pclabel: add got, got, pc 130 #ifdef __thumb__ 131 #define GOT_INITSYM(gotsym,pclabel) \ 132 .align 0; \ 133 gotsym: .word _C_LABEL(_GLOBAL_OFFSET_TABLE_) - (pclabel+4) 134 #else 135 #define GOT_INITSYM(gotsym,pclabel) \ 136 .align 0; \ 137 gotsym: .word _C_LABEL(_GLOBAL_OFFSET_TABLE_) - (pclabel+8) 138 #endif 139 140 #ifdef __STDC__ 141 #define PIC_SYM(x,y) x ## ( ## y ## ) 142 #else 143 #define PIC_SYM(x,y) x/**/(/**/y/**/) 144 #endif 145 146 #else 147 #define REL_SYM(a, b) (a) 148 #define PLT_SYM(x) x 149 #define GOT_SYM(x) x 150 #define GOT_GET(x,got,sym) \ 151 ldr x, sym; 152 #define GOT_INIT(got,gotsym,pclabel) 153 #define GOT_INITSYM(gotsym,pclabel) 154 #define PIC_SYM(x,y) x 155 #endif /* __PIC__ */ 156 157 #define RCSID(x) .pushsection ".ident"; .asciz x; .popsection 158 159 #define WEAK_ALIAS(alias,sym) \ 160 .weak alias; \ 161 alias = sym 162 163 /* 164 * STRONG_ALIAS: create a strong alias. 165 */ 166 #define STRONG_ALIAS(alias,sym) \ 167 .globl alias; \ 168 alias = sym 169 170 #ifdef __STDC__ 171 #define WARN_REFERENCES(sym,msg) \ 172 .pushsection .gnu.warning. ## sym; \ 173 .ascii msg; \ 174 .popsection 175 #else 176 #define WARN_REFERENCES(sym,msg) \ 177 .pushsection .gnu.warning./**/sym; \ 178 .ascii msg; \ 179 .popsection 180 #endif /* __STDC__ */ 181 182 #ifdef __thumb__ 183 # define XPUSH push 184 # define XPOP pop 185 # define XPOPRET pop {pc} 186 #else 187 # define XPUSH stmfd sp!, 188 # define XPOP ldmfd sp!, 189 # ifdef _ARM_ARCH_5 190 # define XPOPRET ldmfd sp!, {pc} 191 # else 192 # define XPOPRET ldmfd sp!, {lr}; mov pc, lr 193 # endif 194 #endif 195 196 #if defined (_ARM_ARCH_4T) 197 # define RET bx lr 198 # define RETr(r) bx r 199 # if defined(__thumb__) 200 # if defined(_ARM_ARCH_7) 201 # define RETc(c) it c; __CONCAT(bx,c) lr 202 # endif 203 # else 204 # define RETc(c) __CONCAT(bx,c) lr 205 # endif 206 #else 207 # define RET mov pc, lr 208 # define RETr(r) mov pc, r 209 # define RETc(c) __CONCAT(mov,c) pc, lr 210 #endif 211 212 #ifdef _ARM_ARCH_7 213 #define KMODTRAMPOLINE(n) \ 214 _ENTRY(__wrap_ ## n) \ 215 movw ip, #:lower16:n; \ 216 movt ip, #:upper16:n; \ 217 bx ip 218 #elif defined(_ARM_ARCH_4T) 219 #define KMODTRAMPOLINE(n) \ 220 _ENTRY(__wrap_ ## n) \ 221 ldr ip, [pc]; \ 222 bx ip; \ 223 .word n 224 #else 225 #define KMODTRAMPOLINE(n) \ 226 _ENTRY(__wrap_ ## n) \ 227 ldr pc, [pc, #-4]; \ 228 .word n 229 #endif 230 231 .macro lsls a,b,c 232 movs \a, \b, lsl \c 233 .endm 234 .macro lsl a,b,c 235 mov \a, \b, lsl \c 236 .endm 237 .macro lsrs a,b,c 238 movs \a, \b, lsr \c 239 .endm 240 .macro lsr a,b,c 241 mov \a, \b, lsr \c 242 .endm 243 .macro negs a,b 244 rsbs \a, \b, #0 245 .endm 246 .macro neg a,b 247 rsb \a, \b, #0 248 .endm 249 .macro ldrd a,b,c,d 250 ldrald \a, \c, \d 251 .endm 252 .macro strd a,b,c,d 253 strald \a, \c, \d 254 .endm 255 #define strbge strgeb 256 #define strbgt strgtb 257 #define ldrbge ldrgeb 258 #define ldrbgt ldrgtb 259 #define ldmdbeq ldmeqdb 260 #define ldrtne ldrnet 261 #define ldrtge ldrget 262 #define ldrtgt ldrgtt 263 #define ldrbtge ldrgebt 264 #define ldrbtgt ldrgtbt 265 #define strtge strget 266 #define strtne strnet 267 #define strbtge strgebt 268 #define strbtgt strgtbt 269 270 #endif /* !_ARM_ASM_H_ */ 271
Indexes created Thu Oct 02 14:10:14 GMT 2025