Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 | /* * Copyright (c) 2007 Apple Inc. All rights reserved. * Copyright (c) 2004-2006 Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this * file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_LICENSE_HEADER_END@ */ #define __APPLE_API_PRIVATE #include <machine/cpu_capabilities.h> #undef __APPLE_API_PRIVATE #include <architecture/ppc/mode_independent_asm.h> /* These are the functions in <libkern/OSAtomic.h>. * The actual primitives are implemented on the commpage. */ /* int32_t OSAtomicAdd32( int32_t theAmount, int32_t *theValue ); */ MI_ENTRY_POINT(_OSAtomicAdd32) ba _COMM_PAGE_ATOMIC_ADD32 /* int32_t OSAtomicOr32( int32_t theMask, int32_t *theValue ); */ MI_ENTRY_POINT(_OSAtomicOr32) mflr r12 // save return address mr r5,r4 // move ptr to where compare-and-swap wants it mr r11,r3 // copy mask 1: lwz r3,0(r5) // get old value or r4,r3,r11 // make new value bla _COMM_PAGE_COMPARE_AND_SWAP32 // preserves r4,r5,r9-r12 cmpwi r3,0 // did swap occur? beq-- 1b // compare-and-swap failed, try again mtlr r12 // restore return adddress mr r3,r4 // return new value blr /* int32_t OSAtomicAnd32( int32_t theMask, int32_t *theValue ); */ MI_ENTRY_POINT(_OSAtomicAnd32) mflr r12 // save return address mr r5,r4 // move ptr to where compare-and-swap wants it mr r11,r3 // copy mask 1: lwz r3,0(r5) // get old value and r4,r3,r11 // make new value bla _COMM_PAGE_COMPARE_AND_SWAP32 // preserves r4,r5,r9-r12 cmpwi r3,0 // did swap occur? beq-- 1b // compare-and-swap failed, try again mtlr r12 // restore return adddress mr r3,r4 // return new value blr /* int32_t OSAtomicXor32( int32_t theMask, int32_t *theValue ); */ MI_ENTRY_POINT(_OSAtomicXor32) mflr r12 // save return address mr r5,r4 // move ptr to where compare-and-swap wants it mr r11,r3 // copy mask 1: lwz r3,0(r5) // get old value xor r4,r3,r11 // make new value bla _COMM_PAGE_COMPARE_AND_SWAP32 // preserves r4,r5,r9-r12 cmpwi r3,0 // did swap occur? beq-- 1b // compare-and-swap failed, try again mtlr r12 // restore return adddress mr r3,r4 // return new value blr /* int32_t OSAtomicOr32Orig( int32_t theMask, int32_t *theValue ); */ MI_ENTRY_POINT(_OSAtomicOr32Orig) mflr r12 // save return address mr r5,r4 // move ptr to where compare-and-swap wants it mr r11,r3 // copy mask 1: lwz r3,0(r5) // get old value mr r10,r3 // save old value or r4,r3,r11 // make new value bla _COMM_PAGE_COMPARE_AND_SWAP32 // preserves r4,r5,r9-r12 cmpwi r3,0 // did swap occur? beq-- 1b // compare-and-swap failed, try again mtlr r12 // restore return adddress mr r3,r10 // return old value blr /* int32_t OSAtomicAnd32Orig( int32_t theMask, int32_t *theValue ); */ MI_ENTRY_POINT(_OSAtomicAnd32Orig) mflr r12 // save return address mr r5,r4 // move ptr to where compare-and-swap wants it mr r11,r3 // copy mask 1: lwz r3,0(r5) // get old value mr r10,r3 // save old value and r4,r3,r11 // make new value bla _COMM_PAGE_COMPARE_AND_SWAP32 // preserves r4,r5,r9-r12 cmpwi r3,0 // did swap occur? beq-- 1b // compare-and-swap failed, try again mtlr r12 // restore return adddress mr r3,r10 // return old value blr /* int32_t OSAtomicXor32Orig( int32_t theMask, int32_t *theValue ); */ MI_ENTRY_POINT(_OSAtomicXor32Orig) mflr r12 // save return address mr r5,r4 // move ptr to where compare-and-swap wants it mr r11,r3 // copy mask 1: lwz r3,0(r5) // get old value mr r10,r3 // save old value xor r4,r3,r11 // make new value bla _COMM_PAGE_COMPARE_AND_SWAP32 // preserves r4,r5,r9-r12 cmpwi r3,0 // did swap occur? beq-- 1b // compare-and-swap failed, try again mtlr r12 // restore return adddress mr r3,r10 // return old value blr /* int64_t OSAtomicAdd64( int64_t theAmount, int64_t *theValue ); */ #if defined(__ppc64__) MI_ENTRY_POINT(_OSAtomicAdd64) ba _COMM_PAGE_ATOMIC_ADD64 #endif /* defined(__ppc64__) */ /* bool OSAtomicCompareAndSwap32( int32_t oldValue, int32_t newValue, int32_t *theValue ); */ /* bool OSAtomicCompareAndSwap64( int64_t oldValue, int64_t newValue, int64_t *theValue ); */ /* bool OSAtomicCompareAndSwapPtr( void* oldValue, void* newValue, void* *theValue ); */ /* bool OSAtomicCompareAndSwapInt( int oldValue, int newValue, int *theValue ); */ /* bool OSAtomicCompareAndSwapLong( long oldValue, long newValue, long *theValue ); */ MI_ENTRY_POINT(_OSAtomicCompareAndSwap32) ba _COMM_PAGE_COMPARE_AND_SWAP32 MI_ENTRY_POINT(_OSAtomicCompareAndSwapInt) ba _COMM_PAGE_COMPARE_AND_SWAP32 #if defined(__ppc64__) MI_ENTRY_POINT(_OSAtomicCompareAndSwap64) ba _COMM_PAGE_COMPARE_AND_SWAP64 MI_ENTRY_POINT(_OSAtomicCompareAndSwapPtr) ba _COMM_PAGE_COMPARE_AND_SWAP64 MI_ENTRY_POINT(_OSAtomicCompareAndSwapLong) ba _COMM_PAGE_COMPARE_AND_SWAP64 #else /* !defined(__ppc64__) */ MI_ENTRY_POINT(_OSAtomicCompareAndSwapPtr) ba _COMM_PAGE_COMPARE_AND_SWAP32 MI_ENTRY_POINT(_OSAtomicCompareAndSwapLong) ba _COMM_PAGE_COMPARE_AND_SWAP32 #endif /* defined(__ppc64__) */ /* bool OSAtomicTestAndSet( uint32_t n, void *theAddress ); */ MI_ENTRY_POINT(_OSAtomicTestAndSet) mflr r12 // save return srwi r5,r3,3 // get byte offset of n rlwinm r6,r3,0,0x7 // get bit position within byte add r4,r4,r5 // r4 points to byte containing the bit lis r10,0x8000 // light bit 0 rlwimi r6,r4,3,0x18 // r6 is bit position within word clrrgi r5,r4,2 // point to word containing the bit srw r10,r10,r6 // get mask for bit addi r9,r6,1 // save bit position + 1 1: lwz r3,0(r5) // get old word rlwnm r11,r3,r9,0x1 // right justify old value of bit or r4,r3,r10 // set it in new word bla _COMM_PAGE_COMPARE_AND_SWAP32 // preserves r4,r5,r9-r12 cmpwi r3,0 // did swap occur? beq-- 1b // compare-and-swap failed, try again mtlr r12 // restore return adddress mr r3,r11 // return original value of bit blr /* bool OSAtomicTestAndClear( uint32_t n, void *theAddress ); */ MI_ENTRY_POINT(_OSAtomicTestAndClear) mflr r12 // save return srwi r5,r3,3 // get byte offset of n rlwinm r6,r3,0,0x7 // get bit position within byte add r4,r4,r5 // r4 points to byte containing the bit lis r10,0x8000 // light bit 0 rlwimi r6,r4,3,0x18 // r6 is bit position within word clrrgi r5,r4,2 // point to word containing the bit srw r10,r10,r6 // get mask for bit addi r9,r6,1 // save bit position + 1 1: lwz r3,0(r5) // get old word rlwnm r11,r3,r9,0x1 // right justify old value of bit andc r4,r3,r10 // clear it in new word bla _COMM_PAGE_COMPARE_AND_SWAP32 // preserves r4,r5,r9-r12 cmpwi r3,0 // did swap occur? beq-- 1b // compare-and-swap failed, try again mtlr r12 // restore return adddress mr r3,r11 // return original value of bit blr /* int32_t OSAtomicAdd32Barrier( int32_t theAmount, int32_t *theValue ); */ MI_ENTRY_POINT(_OSAtomicAdd32Barrier) mflr r12 // save return address mr r5,r4 // move ptr to where compare-and-swap wants it mr r11,r3 // copy theAmount 1: lwz r3,0(r5) // get old value add r4,r3,r11 // make new value bla _COMM_PAGE_COMPARE_AND_SWAP32B // preserves r4,r5,r9-r12 cmpwi r3,0 // did swap occur? beq-- 1b // compare-and-swap failed, try again mtlr r12 // restore return adddress mr r3,r4 // return new value blr /* int32_t OSAtomicOr32Barrier( int32_t theMask, int32_t *theValue ); */ MI_ENTRY_POINT(_OSAtomicOr32Barrier) mflr r12 // save return address mr r5,r4 // move ptr to where compare-and-swap wants it mr r11,r3 // copy mask 1: lwz r3,0(r5) // get old value or r4,r3,r11 // make new value bla _COMM_PAGE_COMPARE_AND_SWAP32B // preserves r4,r5,r9-r12 cmpwi r3,0 // did swap occur? beq-- 1b // compare-and-swap failed, try again mtlr r12 // restore return adddress mr r3,r4 // return new value blr /* int32_t OSAtomicAnd32Barrier( int32_t theMask, int32_t *theValue ); */ MI_ENTRY_POINT(_OSAtomicAnd32Barrier) mflr r12 // save return address mr r5,r4 // move ptr to where compare-and-swap wants it mr r11,r3 // copy mask 1: lwz r3,0(r5) // get old value and r4,r3,r11 // make new value bla _COMM_PAGE_COMPARE_AND_SWAP32B // preserves r4,r5,r9-r12 cmpwi r3,0 // did swap occur? beq-- 1b // compare-and-swap failed, try again mtlr r12 // restore return adddress mr r3,r4 // return new value blr /* int32_t OSAtomicXor32Barrier( int32_t theMask, int32_t *theValue ); */ MI_ENTRY_POINT(_OSAtomicXor32Barrier) mflr r12 // save return address mr r5,r4 // move ptr to where compare-and-swap wants it mr r11,r3 // copy mask 1: lwz r3,0(r5) // get old value xor r4,r3,r11 // make new value bla _COMM_PAGE_COMPARE_AND_SWAP32B // preserves r4,r5,r9-r12 cmpwi r3,0 // did swap occur? beq-- 1b // compare-and-swap failed, try again mtlr r12 // restore return adddress mr r3,r4 // return new value blr /* int32_t OSAtomicOr32OrigBarrier( int32_t theMask, int32_t *theValue ); */ MI_ENTRY_POINT(_OSAtomicOr32OrigBarrier) mflr r12 // save return address mr r5,r4 // move ptr to where compare-and-swap wants it mr r11,r3 // copy mask 1: lwz r3,0(r5) // get old value mr r10,r3 // save old value or r4,r3,r11 // make new value bla _COMM_PAGE_COMPARE_AND_SWAP32B // preserves r4,r5,r9-r12 cmpwi r3,0 // did swap occur? beq-- 1b // compare-and-swap failed, try again mtlr r12 // restore return adddress mr r3,r10 // return old value blr /* int32_t OSAtomicAnd32OrigBarrier( int32_t theMask, int32_t *theValue ); */ MI_ENTRY_POINT(_OSAtomicAnd32OrigBarrier) mflr r12 // save return address mr r5,r4 // move ptr to where compare-and-swap wants it mr r11,r3 // copy mask 1: lwz r3,0(r5) // get old value mr r10,r3 // save old value and r4,r3,r11 // make new value bla _COMM_PAGE_COMPARE_AND_SWAP32B // preserves r4,r5,r9-r12 cmpwi r3,0 // did swap occur? beq-- 1b // compare-and-swap failed, try again mtlr r12 // restore return adddress mr r3,r10 // return old value blr /* int32_t OSAtomicXor32OrigBarrier( int32_t theMask, int32_t *theValue ); */ MI_ENTRY_POINT(_OSAtomicXor32OrigBarrier) mflr r12 // save return address mr r5,r4 // move ptr to where compare-and-swap wants it mr r11,r3 // copy mask 1: lwz r3,0(r5) // get old value mr r10,r3 // save old value xor r4,r3,r11 // make new value bla _COMM_PAGE_COMPARE_AND_SWAP32B // preserves r4,r5,r9-r12 cmpwi r3,0 // did swap occur? beq-- 1b // compare-and-swap failed, try again mtlr r12 // restore return adddress mr r3,r10 // return old value blr /* int64_t OSAtomicAdd64Barrier( int64_t theAmount, int64_t *theValue ); */ #if defined(__ppc64__) MI_ENTRY_POINT(_OSAtomicAdd64Barrier) mflr r12 // save return address mr r5,r4 // move ptr to where compare-and-swap wants it mr r11,r3 // copy theAmount 1: ld r3,0(r5) // get old value add r4,r3,r11 // make new value bla _COMM_PAGE_COMPARE_AND_SWAP64B // preserves r4,r5,r9-r12 cmpwi r3,0 // did swap occur? beq-- 1b // compare-and-swap failed, try again mtlr r12 // restore return adddress mr r3,r4 // return new value blr #endif /* defined(__ppc64__) */ /* bool OSAtomicCompareAndSwap32Barrier( int32_t oldValue, int32_t newValue, int32_t *theValue ); */ /* bool OSAtomicCompareAndSwap64Barrier( int64_t oldValue, int64_t newValue, int64_t *theValue ); */ /* bool OSAtomicCompareAndSwapPtrBarrier( void* oldValue, void* newValue, void* *theValue ); */ /* bool OSAtomicCompareAndSwapIntBarrier( int oldValue, int newValue, int *theValue ); */ /* bool OSAtomicCompareAndSwapLongBarrier( long oldValue, long newValue, long *theValue ); */ MI_ENTRY_POINT(_OSAtomicCompareAndSwap32Barrier) ba _COMM_PAGE_COMPARE_AND_SWAP32B MI_ENTRY_POINT(_OSAtomicCompareAndSwapIntBarrier) ba _COMM_PAGE_COMPARE_AND_SWAP32B #if defined(__ppc64__) MI_ENTRY_POINT(_OSAtomicCompareAndSwap64Barrier) ba _COMM_PAGE_COMPARE_AND_SWAP64B MI_ENTRY_POINT(_OSAtomicCompareAndSwapPtrBarrier) ba _COMM_PAGE_COMPARE_AND_SWAP64B MI_ENTRY_POINT(_OSAtomicCompareAndSwapLongBarrier) ba _COMM_PAGE_COMPARE_AND_SWAP64B #else /* !defined(__ppc64__) */ MI_ENTRY_POINT(_OSAtomicCompareAndSwapPtrBarrier) ba _COMM_PAGE_COMPARE_AND_SWAP32B MI_ENTRY_POINT(_OSAtomicCompareAndSwapLongBarrier) ba _COMM_PAGE_COMPARE_AND_SWAP32B #endif /* defined(__ppc64__) */ /* bool OSAtomicTestAndSetBarrier( uint32_t n, void *theAddress ); */ MI_ENTRY_POINT(_OSAtomicTestAndSetBarrier) mflr r12 // save return srwi r5,r3,3 // get byte offset of n rlwinm r6,r3,0,0x7 // get bit position within byte add r4,r4,r5 // r4 points to byte containing the bit lis r10,0x8000 // light bit 0 rlwimi r6,r4,3,0x18 // r6 is bit position within word clrrgi r5,r4,2 // point to word containing the bit srw r10,r10,r6 // get mask for bit addi r9,r6,1 // save bit position + 1 1: lwz r3,0(r5) // get old word rlwnm r11,r3,r9,0x1 // right justify old value of bit or r4,r3,r10 // set it in new word bla _COMM_PAGE_COMPARE_AND_SWAP32B // preserves r4,r5,r9-r12 cmpwi r3,0 // did swap occur? beq-- 1b // compare-and-swap failed, try again mtlr r12 // restore return adddress mr r3,r11 // return original value of bit blr /* bool OSAtomicTestAndClearBarrier( uint32_t n, void *theAddress ); */ MI_ENTRY_POINT(_OSAtomicTestAndClearBarrier) mflr r12 // save return srwi r5,r3,3 // get byte offset of n rlwinm r6,r3,0,0x7 // get bit position within byte add r4,r4,r5 // r4 points to byte containing the bit lis r10,0x8000 // light bit 0 rlwimi r6,r4,3,0x18 // r6 is bit position within word clrrgi r5,r4,2 // point to word containing the bit srw r10,r10,r6 // get mask for bit addi r9,r6,1 // save bit position + 1 1: lwz r3,0(r5) // get old word rlwnm r11,r3,r9,0x1 // right justify old value of bit andc r4,r3,r10 // clear it in new word bla _COMM_PAGE_COMPARE_AND_SWAP32B // preserves r4,r5,r9-r12 cmpwi r3,0 // did swap occur? beq-- 1b // compare-and-swap failed, try again mtlr r12 // restore return adddress mr r3,r11 // return original value of bit blr /* bool OSSpinLockTry( OSSpinLock *lock ); */ MI_ENTRY_POINT(_OSSpinLockTry) .globl __spin_lock_try __spin_lock_try: ba _COMM_PAGE_SPINLOCK_TRY /* void OSSpinLockLock( OSSpinLock *lock ); */ MI_ENTRY_POINT(_OSSpinLockLock) .globl _spin_lock .globl __spin_lock _spin_lock: __spin_lock: ba _COMM_PAGE_SPINLOCK_LOCK /* void OSSpinLockUnlock( OSSpinLock *lock ); */ MI_ENTRY_POINT(_OSSpinLockUnlock) .globl _spin_unlock .globl __spin_unlock _spin_unlock: __spin_unlock: ba _COMM_PAGE_SPINLOCK_UNLOCK /* void OSMemoryBarrier( void ); */ MI_ENTRY_POINT(_OSMemoryBarrier) ba _COMM_PAGE_MEMORY_BARRIER /* void OSAtomicEnqueue( OSQueueHead *list, void *new, size_t offset); */ MI_ENTRY_POINT(_OSAtomicEnqueue) ba _COMM_PAGE_ENQUEUE /* void* OSAtomicDequeue( OSQueueHead *list, size_t offset); */ MI_ENTRY_POINT(_OSAtomicDequeue) ba _COMM_PAGE_DEQUEUE |