atomic.S revision 1.14
1 /* $NetBSD: atomic.S,v 1.14 2009/01/12 02:53:29 pooka Exp $ */ 2 3 /*- 4 * Copyright (c) 2007 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe, and by Andrew Doran. 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/param.h> 33 #include <machine/asm.h> 34 35 #ifdef _HARDKERNEL 36 #define LOCK(n) .Lpatch/**/n: lock 37 #define ALIAS(f, t) STRONG_ALIAS(f,t) 38 #define ENDLABEL(a) _ALIGN_TEXT; LABEL(a) 39 #else 40 #define LOCK(n) lock 41 #define ALIAS(f, t) WEAK_ALIAS(f,t) 42 #define ENDLABEL(a) /* nothing */ 43 #endif 44 45 .text 46 47 /* 32-bit */ 48 49 ENTRY(_atomic_add_32) 50 LOCK(1) 51 addl %esi, (%rdi) 52 ret 53 54 ENTRY(_atomic_add_32_nv) 55 movl %esi, %eax 56 LOCK(2) 57 xaddl %eax, (%rdi) 58 addl %esi, %eax 59 ret 60 61 ENTRY(_atomic_and_32) 62 LOCK(3) 63 andl %esi, (%rdi) 64 ret 65 66 ENTRY(_atomic_and_32_nv) 67 movl (%rdi), %eax 68 1: 69 movl %eax, %ecx 70 andl %esi, %ecx 71 LOCK(4) 72 cmpxchgl %ecx, (%rdi) 73 jnz 1b 74 movl %ecx, %eax 75 ret 76 77 ENTRY(_atomic_dec_32) 78 LOCK(5) 79 decl (%rdi) 80 ret 81 82 ENTRY(_atomic_dec_32_nv) 83 movl $-1, %eax 84 LOCK(6) 85 xaddl %eax, (%rdi) 86 decl %eax 87 ret 88 89 ENTRY(_atomic_inc_32) 90 LOCK(7) 91 incl (%rdi) 92 ret 93 94 ENTRY(_atomic_inc_32_nv) 95 movl $1, %eax 96 LOCK(8) 97 xaddl %eax, (%rdi) 98 incl %eax 99 ret 100 101 ENTRY(_atomic_or_32) 102 LOCK(9) 103 orl %esi, (%rdi) 104 ret 105 106 ENTRY(_atomic_or_32_nv) 107 movl (%rdi), %eax 108 1: 109 movl %eax, %ecx 110 orl %esi, %ecx 111 LOCK(10) 112 cmpxchgl %ecx, (%rdi) 113 jnz 1b 114 movl %ecx, %eax 115 ret 116 117 ENTRY(_atomic_swap_32) 118 movl %esi, %eax 119 xchgl %eax, (%rdi) 120 ret 121 122 ENTRY(_atomic_cas_32) 123 movl %esi, %eax 124 LOCK(12) 125 cmpxchgl %edx, (%rdi) 126 /* %eax now contains the old value */ 127 ret 128 129 ENTRY(_atomic_cas_32_ni) 130 movl %esi, %eax 131 cmpxchgl %edx, (%rdi) 132 /* %eax now contains the old value */ 133 ret 134 135 /* 64-bit */ 136 137 ENTRY(_atomic_add_64) 138 LOCK(13) 139 addq %rsi, (%rdi) 140 ret 141 142 ENTRY(_atomic_add_64_nv) 143 movq %rsi, %rax 144 LOCK(14) 145 xaddq %rax, (%rdi) 146 addq %rsi, %rax 147 ret 148 149 ENTRY(_atomic_and_64) 150 LOCK(15) 151 andq %rsi, (%rdi) 152 ret 153 154 ENTRY(_atomic_and_64_nv) 155 movq (%rdi), %rax 156 1: 157 movq %rax, %rcx 158 andq %rsi, %rcx 159 LOCK(16) 160 cmpxchgq %rcx, (%rdi) 161 jnz 1b 162 movq %rcx, %rax 163 ret 164 165 ENTRY(_atomic_dec_64) 166 LOCK(17) 167 decq (%rdi) 168 ret 169 170 ENTRY(_atomic_dec_64_nv) 171 movq $-1, %rax 172 LOCK(18) 173 xaddq %rax, (%rdi) 174 decq %rax 175 ret 176 177 ENTRY(_atomic_inc_64) 178 LOCK(19) 179 incq (%rdi) 180 ret 181 182 ENTRY(_atomic_inc_64_nv) 183 movq $1, %rax 184 LOCK(20) 185 xaddq %rax, (%rdi) 186 incq %rax 187 ret 188 189 ENTRY(_atomic_or_64) 190 LOCK(21) 191 orq %rsi, (%rdi) 192 ret 193 194 ENTRY(_atomic_or_64_nv) 195 movq (%rdi), %rax 196 1: 197 movq %rax, %rcx 198 orq %rsi, %rcx 199 LOCK(22) 200 cmpxchgq %rcx, (%rdi) 201 jnz 1b 202 movq %rcx, %rax 203 ret 204 205 ENTRY(_atomic_swap_64) 206 movq %rsi, %rax 207 xchgq %rax, (%rdi) 208 ret 209 210 ENTRY(_atomic_cas_64) 211 movq %rsi, %rax 212 LOCK(24) 213 cmpxchgq %rdx, (%rdi) 214 /* %eax now contains the old value */ 215 ret 216 217 ENTRY(_atomic_cas_64_ni) 218 movq %rsi, %rax 219 cmpxchgq %rdx, (%rdi) 220 /* %eax now contains the old value */ 221 ret 222 223 /* memory barriers */ 224 225 ENTRY(_membar_consumer) 226 LOCK(25) 227 addq $0, -8(%rsp) 228 ret 229 ENDLABEL(membar_consumer_end) 230 231 ENTRY(_membar_producer) 232 /* A store is enough */ 233 movq $0, -8(%rsp) 234 ret 235 ENDLABEL(membar_producer_end) 236 237 ENTRY(_membar_sync) 238 LOCK(26) 239 addq $0, -8(%rsp) 240 ret 241 ENDLABEL(membar_sync_end) 242 243 #ifdef _HARDKERNEL 244 ENTRY(sse2_lfence) 245 lfence 246 ret 247 ENDLABEL(sse2_lfence_end) 248 249 ENTRY(sse2_mfence) 250 mfence 251 ret 252 ENDLABEL(sse2_mfence_end) 253 254 atomic_lockpatch: 255 .globl atomic_lockpatch 256 .quad .Lpatch1, .Lpatch2, .Lpatch3, .Lpatch4, .Lpatch5 257 .quad .Lpatch6, .Lpatch7, .Lpatch8, .Lpatch9, .Lpatch10 258 .quad .Lpatch12, .Lpatch13, .Lpatch14, .Lpatch15 259 .quad .Lpatch16, .Lpatch17, .Lpatch18, .Lpatch19, .Lpatch20 260 .quad .Lpatch21, .Lpatch22, .Lpatch24, .Lpatch25 261 .quad .Lpatch26, 0 262 #endif /* _HARDKERNEL */ 263 264 ALIAS(atomic_add_32,_atomic_add_32) 265 ALIAS(atomic_add_64,_atomic_add_64) 266 ALIAS(atomic_add_int,_atomic_add_32) 267 ALIAS(atomic_add_long,_atomic_add_64) 268 ALIAS(atomic_add_ptr,_atomic_add_64) 269 270 ALIAS(atomic_add_32_nv,_atomic_add_32_nv) 271 ALIAS(atomic_add_64_nv,_atomic_add_64_nv) 272 ALIAS(atomic_add_int_nv,_atomic_add_32_nv) 273 ALIAS(atomic_add_long_nv,_atomic_add_64_nv) 274 ALIAS(atomic_add_ptr_nv,_atomic_add_64_nv) 275 276 ALIAS(atomic_and_32,_atomic_and_32) 277 ALIAS(atomic_and_64,_atomic_and_64) 278 ALIAS(atomic_and_uint,_atomic_and_32) 279 ALIAS(atomic_and_ulong,_atomic_and_64) 280 ALIAS(atomic_and_ptr,_atomic_and_64) 281 282 ALIAS(atomic_and_32_nv,_atomic_and_32_nv) 283 ALIAS(atomic_and_64_nv,_atomic_and_64_nv) 284 ALIAS(atomic_and_uint_nv,_atomic_and_32_nv) 285 ALIAS(atomic_and_ulong_nv,_atomic_and_64_nv) 286 ALIAS(atomic_and_ptr_nv,_atomic_and_64_nv) 287 288 ALIAS(atomic_dec_32,_atomic_dec_32) 289 ALIAS(atomic_dec_64,_atomic_dec_64) 290 ALIAS(atomic_dec_uint,_atomic_dec_32) 291 ALIAS(atomic_dec_ulong,_atomic_dec_64) 292 ALIAS(atomic_dec_ptr,_atomic_dec_64) 293 294 ALIAS(atomic_dec_32_nv,_atomic_dec_32_nv) 295 ALIAS(atomic_dec_64_nv,_atomic_dec_64_nv) 296 ALIAS(atomic_dec_uint_nv,_atomic_dec_32_nv) 297 ALIAS(atomic_dec_ulong_nv,_atomic_dec_64_nv) 298 ALIAS(atomic_dec_ptr_nv,_atomic_dec_64_nv) 299 300 ALIAS(atomic_inc_32,_atomic_inc_32) 301 ALIAS(atomic_inc_64,_atomic_inc_64) 302 ALIAS(atomic_inc_uint,_atomic_inc_32) 303 ALIAS(atomic_inc_ulong,_atomic_inc_64) 304 ALIAS(atomic_inc_ptr,_atomic_inc_64) 305 306 ALIAS(atomic_inc_32_nv,_atomic_inc_32_nv) 307 ALIAS(atomic_inc_64_nv,_atomic_inc_64_nv) 308 ALIAS(atomic_inc_uint_nv,_atomic_inc_32_nv) 309 ALIAS(atomic_inc_ulong_nv,_atomic_inc_64_nv) 310 ALIAS(atomic_inc_ptr_nv,_atomic_inc_64_nv) 311 312 ALIAS(atomic_or_32,_atomic_or_32) 313 ALIAS(atomic_or_uint,_atomic_or_32) 314 ALIAS(atomic_or_ulong,_atomic_or_64) 315 ALIAS(atomic_or_ptr,_atomic_or_64) 316 317 ALIAS(atomic_or_32_nv,_atomic_or_32_nv) 318 ALIAS(atomic_or_64_nv,_atomic_or_64_nv) 319 ALIAS(atomic_or_uint_nv,_atomic_or_32_nv) 320 ALIAS(atomic_or_ulong_nv,_atomic_or_64_nv) 321 ALIAS(atomic_or_ptr_nv,_atomic_or_64_nv) 322 323 ALIAS(atomic_swap_32,_atomic_swap_32) 324 ALIAS(atomic_swap_64,_atomic_swap_64) 325 ALIAS(atomic_swap_uint,_atomic_swap_32) 326 ALIAS(atomic_swap_ulong,_atomic_swap_64) 327 ALIAS(atomic_swap_ptr,_atomic_swap_64) 328 329 ALIAS(atomic_cas_32,_atomic_cas_32) 330 ALIAS(atomic_cas_64,_atomic_cas_64) 331 ALIAS(atomic_cas_uint,_atomic_cas_32) 332 ALIAS(atomic_cas_ulong,_atomic_cas_64) 333 ALIAS(atomic_cas_ptr,_atomic_cas_64) 334 335 ALIAS(atomic_cas_32_ni,_atomic_cas_32_ni) 336 ALIAS(atomic_cas_64_ni,_atomic_cas_64_ni) 337 ALIAS(atomic_cas_uint_ni,_atomic_cas_32_ni) 338 ALIAS(atomic_cas_ulong_ni,_atomic_cas_64_ni) 339 ALIAS(atomic_cas_ptr_ni,_atomic_cas_64_ni) 340 341 ALIAS(membar_consumer,_membar_consumer) 342 ALIAS(membar_producer,_membar_producer) 343 ALIAS(membar_enter,_membar_consumer) 344 ALIAS(membar_exit,_membar_producer) 345 ALIAS(membar_sync,_membar_sync) 346 347 STRONG_ALIAS(_atomic_add_int,_atomic_add_32) 348 STRONG_ALIAS(_atomic_add_long,_atomic_add_64) 349 STRONG_ALIAS(_atomic_add_ptr,_atomic_add_64) 350 351 STRONG_ALIAS(_atomic_add_int_nv,_atomic_add_32_nv) 352 STRONG_ALIAS(_atomic_add_long_nv,_atomic_add_64_nv) 353 STRONG_ALIAS(_atomic_add_ptr_nv,_atomic_add_64_nv) 354 355 STRONG_ALIAS(_atomic_and_uint,_atomic_and_32) 356 STRONG_ALIAS(_atomic_and_ulong,_atomic_and_64) 357 STRONG_ALIAS(_atomic_and_ptr,_atomic_and_64) 358 359 STRONG_ALIAS(_atomic_and_uint_nv,_atomic_and_32_nv) 360 STRONG_ALIAS(_atomic_and_ulong_nv,_atomic_and_64_nv) 361 STRONG_ALIAS(_atomic_and_ptr_nv,_atomic_and_64_nv) 362 363 STRONG_ALIAS(_atomic_dec_uint,_atomic_dec_32) 364 STRONG_ALIAS(_atomic_dec_ulong,_atomic_dec_64) 365 STRONG_ALIAS(_atomic_dec_ptr,_atomic_dec_64) 366 367 STRONG_ALIAS(_atomic_dec_uint_nv,_atomic_dec_32_nv) 368 STRONG_ALIAS(_atomic_dec_ulong_nv,_atomic_dec_64_nv) 369 STRONG_ALIAS(_atomic_dec_ptr_nv,_atomic_dec_64_nv) 370 371 STRONG_ALIAS(_atomic_inc_uint,_atomic_inc_32) 372 STRONG_ALIAS(_atomic_inc_ulong,_atomic_inc_64) 373 STRONG_ALIAS(_atomic_inc_ptr,_atomic_inc_64) 374 375 STRONG_ALIAS(_atomic_inc_uint_nv,_atomic_inc_32_nv) 376 STRONG_ALIAS(_atomic_inc_ulong_nv,_atomic_inc_64_nv) 377 STRONG_ALIAS(_atomic_inc_ptr_nv,_atomic_inc_64_nv) 378 379 STRONG_ALIAS(_atomic_or_uint,_atomic_or_32) 380 STRONG_ALIAS(_atomic_or_ulong,_atomic_or_64) 381 STRONG_ALIAS(_atomic_or_ptr,_atomic_or_64) 382 383 STRONG_ALIAS(_atomic_or_uint_nv,_atomic_or_32_nv) 384 STRONG_ALIAS(_atomic_or_ulong_nv,_atomic_or_64_nv) 385 STRONG_ALIAS(_atomic_or_ptr_nv,_atomic_or_64_nv) 386 387 STRONG_ALIAS(_atomic_swap_uint,_atomic_swap_32) 388 STRONG_ALIAS(_atomic_swap_ulong,_atomic_swap_64) 389 STRONG_ALIAS(_atomic_swap_ptr,_atomic_swap_64) 390 391 STRONG_ALIAS(_atomic_cas_uint,_atomic_cas_32) 392 STRONG_ALIAS(_atomic_cas_ulong,_atomic_cas_64) 393 STRONG_ALIAS(_atomic_cas_ptr,_atomic_cas_64) 394 395 STRONG_ALIAS(_atomic_cas_uint_ni,_atomic_cas_32_ni) 396 STRONG_ALIAS(_atomic_cas_ulong_ni,_atomic_cas_64_ni) 397 STRONG_ALIAS(_atomic_cas_ptr_ni,_atomic_cas_64_ni) 398 399 STRONG_ALIAS(_membar_enter,_membar_consumer) 400 STRONG_ALIAS(_membar_exit,_membar_producer) 401
Indexes created Tue Sep 30 11:09:46 GMT 2025