Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1 | // Copyright 2015 the V8 project authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #include "src/runtime/runtime-utils.h" |
| 6 | |
| 7 | #include "src/arguments.h" |
| 8 | #include "src/base/macros.h" |
| 9 | #include "src/base/platform/mutex.h" |
| 10 | #include "src/conversions-inl.h" |
| 11 | #include "src/factory.h" |
| 12 | |
| 13 | // Implement Atomic accesses to SharedArrayBuffers as defined in the |
| 14 | // SharedArrayBuffer draft spec, found here |
| 15 | // https://github.com/lars-t-hansen/ecmascript_sharedmem |
| 16 | |
| 17 | namespace v8 { |
| 18 | namespace internal { |
| 19 | |
| 20 | namespace { |
| 21 | |
| 22 | inline bool AtomicIsLockFree(uint32_t size) { |
| 23 | return size == 1 || size == 2 || size == 4; |
| 24 | } |
| 25 | |
| 26 | #if V8_CC_GNU |
| 27 | |
| 28 | template <typename T> |
| 29 | inline T CompareExchangeSeqCst(T* p, T oldval, T newval) { |
| 30 | (void)__atomic_compare_exchange_n(p, &oldval, newval, 0, __ATOMIC_SEQ_CST, |
| 31 | __ATOMIC_SEQ_CST); |
| 32 | return oldval; |
| 33 | } |
| 34 | |
| 35 | template <typename T> |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 36 | inline T AddSeqCst(T* p, T value) { |
| 37 | return __atomic_fetch_add(p, value, __ATOMIC_SEQ_CST); |
| 38 | } |
| 39 | |
| 40 | template <typename T> |
| 41 | inline T SubSeqCst(T* p, T value) { |
| 42 | return __atomic_fetch_sub(p, value, __ATOMIC_SEQ_CST); |
| 43 | } |
| 44 | |
| 45 | template <typename T> |
| 46 | inline T AndSeqCst(T* p, T value) { |
| 47 | return __atomic_fetch_and(p, value, __ATOMIC_SEQ_CST); |
| 48 | } |
| 49 | |
| 50 | template <typename T> |
| 51 | inline T OrSeqCst(T* p, T value) { |
| 52 | return __atomic_fetch_or(p, value, __ATOMIC_SEQ_CST); |
| 53 | } |
| 54 | |
| 55 | template <typename T> |
| 56 | inline T XorSeqCst(T* p, T value) { |
| 57 | return __atomic_fetch_xor(p, value, __ATOMIC_SEQ_CST); |
| 58 | } |
| 59 | |
| 60 | template <typename T> |
| 61 | inline T ExchangeSeqCst(T* p, T value) { |
| 62 | return __atomic_exchange_n(p, value, __ATOMIC_SEQ_CST); |
| 63 | } |
| 64 | |
| 65 | #elif V8_CC_MSVC |
| 66 | |
| 67 | #define InterlockedCompareExchange32 _InterlockedCompareExchange |
| 68 | #define InterlockedExchange32 _InterlockedExchange |
| 69 | #define InterlockedExchangeAdd32 _InterlockedExchangeAdd |
| 70 | #define InterlockedAnd32 _InterlockedAnd |
| 71 | #define InterlockedOr32 _InterlockedOr |
| 72 | #define InterlockedXor32 _InterlockedXor |
| 73 | #define InterlockedExchangeAdd16 _InterlockedExchangeAdd16 |
| 74 | #define InterlockedCompareExchange8 _InterlockedCompareExchange8 |
| 75 | #define InterlockedExchangeAdd8 _InterlockedExchangeAdd8 |
| 76 | |
| 77 | #define ATOMIC_OPS(type, suffix, vctype) \ |
| 78 | inline type AddSeqCst(type* p, type value) { \ |
| 79 | return InterlockedExchangeAdd##suffix(reinterpret_cast<vctype*>(p), \ |
| 80 | bit_cast<vctype>(value)); \ |
| 81 | } \ |
| 82 | inline type SubSeqCst(type* p, type value) { \ |
| 83 | return InterlockedExchangeAdd##suffix(reinterpret_cast<vctype*>(p), \ |
| 84 | -bit_cast<vctype>(value)); \ |
| 85 | } \ |
| 86 | inline type AndSeqCst(type* p, type value) { \ |
| 87 | return InterlockedAnd##suffix(reinterpret_cast<vctype*>(p), \ |
| 88 | bit_cast<vctype>(value)); \ |
| 89 | } \ |
| 90 | inline type OrSeqCst(type* p, type value) { \ |
| 91 | return InterlockedOr##suffix(reinterpret_cast<vctype*>(p), \ |
| 92 | bit_cast<vctype>(value)); \ |
| 93 | } \ |
| 94 | inline type XorSeqCst(type* p, type value) { \ |
| 95 | return InterlockedXor##suffix(reinterpret_cast<vctype*>(p), \ |
| 96 | bit_cast<vctype>(value)); \ |
| 97 | } \ |
| 98 | inline type ExchangeSeqCst(type* p, type value) { \ |
| 99 | return InterlockedExchange##suffix(reinterpret_cast<vctype*>(p), \ |
| 100 | bit_cast<vctype>(value)); \ |
| 101 | } \ |
| 102 | \ |
| 103 | inline type CompareExchangeSeqCst(type* p, type oldval, type newval) { \ |
| 104 | return InterlockedCompareExchange##suffix(reinterpret_cast<vctype*>(p), \ |
| 105 | bit_cast<vctype>(newval), \ |
| 106 | bit_cast<vctype>(oldval)); \ |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 107 | } |
| 108 | |
| 109 | ATOMIC_OPS(int8_t, 8, char) |
| 110 | ATOMIC_OPS(uint8_t, 8, char) |
| 111 | ATOMIC_OPS(int16_t, 16, short) /* NOLINT(runtime/int) */ |
| 112 | ATOMIC_OPS(uint16_t, 16, short) /* NOLINT(runtime/int) */ |
| 113 | ATOMIC_OPS(int32_t, 32, long) /* NOLINT(runtime/int) */ |
| 114 | ATOMIC_OPS(uint32_t, 32, long) /* NOLINT(runtime/int) */ |
| 115 | |
| 116 | #undef ATOMIC_OPS_INTEGER |
| 117 | #undef ATOMIC_OPS |
| 118 | |
| 119 | #undef InterlockedCompareExchange32 |
| 120 | #undef InterlockedExchange32 |
| 121 | #undef InterlockedExchangeAdd32 |
| 122 | #undef InterlockedAnd32 |
| 123 | #undef InterlockedOr32 |
| 124 | #undef InterlockedXor32 |
| 125 | #undef InterlockedExchangeAdd16 |
| 126 | #undef InterlockedCompareExchange8 |
| 127 | #undef InterlockedExchangeAdd8 |
| 128 | |
| 129 | #else |
| 130 | |
| 131 | #error Unsupported platform! |
| 132 | |
| 133 | #endif |
| 134 | |
| 135 | template <typename T> |
| 136 | T FromObject(Handle<Object> number); |
| 137 | |
| 138 | template <> |
| 139 | inline uint8_t FromObject<uint8_t>(Handle<Object> number) { |
| 140 | return NumberToUint32(*number); |
| 141 | } |
| 142 | |
| 143 | template <> |
| 144 | inline int8_t FromObject<int8_t>(Handle<Object> number) { |
| 145 | return NumberToInt32(*number); |
| 146 | } |
| 147 | |
| 148 | template <> |
| 149 | inline uint16_t FromObject<uint16_t>(Handle<Object> number) { |
| 150 | return NumberToUint32(*number); |
| 151 | } |
| 152 | |
| 153 | template <> |
| 154 | inline int16_t FromObject<int16_t>(Handle<Object> number) { |
| 155 | return NumberToInt32(*number); |
| 156 | } |
| 157 | |
| 158 | template <> |
| 159 | inline uint32_t FromObject<uint32_t>(Handle<Object> number) { |
| 160 | return NumberToUint32(*number); |
| 161 | } |
| 162 | |
| 163 | template <> |
| 164 | inline int32_t FromObject<int32_t>(Handle<Object> number) { |
| 165 | return NumberToInt32(*number); |
| 166 | } |
| 167 | |
| 168 | |
| 169 | inline Object* ToObject(Isolate* isolate, int8_t t) { return Smi::FromInt(t); } |
| 170 | |
| 171 | inline Object* ToObject(Isolate* isolate, uint8_t t) { return Smi::FromInt(t); } |
| 172 | |
| 173 | inline Object* ToObject(Isolate* isolate, int16_t t) { return Smi::FromInt(t); } |
| 174 | |
| 175 | inline Object* ToObject(Isolate* isolate, uint16_t t) { |
| 176 | return Smi::FromInt(t); |
| 177 | } |
| 178 | |
| 179 | |
| 180 | inline Object* ToObject(Isolate* isolate, int32_t t) { |
| 181 | return *isolate->factory()->NewNumber(t); |
| 182 | } |
| 183 | |
| 184 | |
| 185 | inline Object* ToObject(Isolate* isolate, uint32_t t) { |
| 186 | return *isolate->factory()->NewNumber(t); |
| 187 | } |
| 188 | |
| 189 | |
| 190 | template <typename T> |
| 191 | inline Object* DoCompareExchange(Isolate* isolate, void* buffer, size_t index, |
| 192 | Handle<Object> oldobj, Handle<Object> newobj) { |
| 193 | T oldval = FromObject<T>(oldobj); |
| 194 | T newval = FromObject<T>(newobj); |
| 195 | T result = |
| 196 | CompareExchangeSeqCst(static_cast<T*>(buffer) + index, oldval, newval); |
| 197 | return ToObject(isolate, result); |
| 198 | } |
| 199 | |
| 200 | |
| 201 | template <typename T> |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 202 | inline Object* DoAdd(Isolate* isolate, void* buffer, size_t index, |
| 203 | Handle<Object> obj) { |
| 204 | T value = FromObject<T>(obj); |
| 205 | T result = AddSeqCst(static_cast<T*>(buffer) + index, value); |
| 206 | return ToObject(isolate, result); |
| 207 | } |
| 208 | |
| 209 | |
| 210 | template <typename T> |
| 211 | inline Object* DoSub(Isolate* isolate, void* buffer, size_t index, |
| 212 | Handle<Object> obj) { |
| 213 | T value = FromObject<T>(obj); |
| 214 | T result = SubSeqCst(static_cast<T*>(buffer) + index, value); |
| 215 | return ToObject(isolate, result); |
| 216 | } |
| 217 | |
| 218 | |
| 219 | template <typename T> |
| 220 | inline Object* DoAnd(Isolate* isolate, void* buffer, size_t index, |
| 221 | Handle<Object> obj) { |
| 222 | T value = FromObject<T>(obj); |
| 223 | T result = AndSeqCst(static_cast<T*>(buffer) + index, value); |
| 224 | return ToObject(isolate, result); |
| 225 | } |
| 226 | |
| 227 | |
| 228 | template <typename T> |
| 229 | inline Object* DoOr(Isolate* isolate, void* buffer, size_t index, |
| 230 | Handle<Object> obj) { |
| 231 | T value = FromObject<T>(obj); |
| 232 | T result = OrSeqCst(static_cast<T*>(buffer) + index, value); |
| 233 | return ToObject(isolate, result); |
| 234 | } |
| 235 | |
| 236 | |
| 237 | template <typename T> |
| 238 | inline Object* DoXor(Isolate* isolate, void* buffer, size_t index, |
| 239 | Handle<Object> obj) { |
| 240 | T value = FromObject<T>(obj); |
| 241 | T result = XorSeqCst(static_cast<T*>(buffer) + index, value); |
| 242 | return ToObject(isolate, result); |
| 243 | } |
| 244 | |
| 245 | |
| 246 | template <typename T> |
| 247 | inline Object* DoExchange(Isolate* isolate, void* buffer, size_t index, |
| 248 | Handle<Object> obj) { |
| 249 | T value = FromObject<T>(obj); |
| 250 | T result = ExchangeSeqCst(static_cast<T*>(buffer) + index, value); |
| 251 | return ToObject(isolate, result); |
| 252 | } |
| 253 | |
| 254 | |
| 255 | // Uint8Clamped functions |
| 256 | |
| 257 | uint8_t ClampToUint8(int32_t value) { |
| 258 | if (value < 0) return 0; |
| 259 | if (value > 255) return 255; |
| 260 | return value; |
| 261 | } |
| 262 | |
| 263 | |
| 264 | inline Object* DoCompareExchangeUint8Clamped(Isolate* isolate, void* buffer, |
| 265 | size_t index, |
| 266 | Handle<Object> oldobj, |
| 267 | Handle<Object> newobj) { |
| 268 | typedef int32_t convert_type; |
| 269 | uint8_t oldval = ClampToUint8(FromObject<convert_type>(oldobj)); |
| 270 | uint8_t newval = ClampToUint8(FromObject<convert_type>(newobj)); |
| 271 | uint8_t result = CompareExchangeSeqCst(static_cast<uint8_t*>(buffer) + index, |
| 272 | oldval, newval); |
| 273 | return ToObject(isolate, result); |
| 274 | } |
| 275 | |
| 276 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 277 | #define DO_UINT8_CLAMPED_OP(name, op) \ |
| 278 | inline Object* Do##name##Uint8Clamped(Isolate* isolate, void* buffer, \ |
| 279 | size_t index, Handle<Object> obj) { \ |
| 280 | typedef int32_t convert_type; \ |
| 281 | uint8_t* p = static_cast<uint8_t*>(buffer) + index; \ |
| 282 | convert_type operand = FromObject<convert_type>(obj); \ |
| 283 | uint8_t expected; \ |
| 284 | uint8_t result; \ |
| 285 | do { \ |
| 286 | expected = *p; \ |
| 287 | result = ClampToUint8(static_cast<convert_type>(expected) op operand); \ |
| 288 | } while (CompareExchangeSeqCst(p, expected, result) != expected); \ |
| 289 | return ToObject(isolate, expected); \ |
| 290 | } |
| 291 | |
| 292 | DO_UINT8_CLAMPED_OP(Add, +) |
| 293 | DO_UINT8_CLAMPED_OP(Sub, -) |
| 294 | DO_UINT8_CLAMPED_OP(And, &) |
| 295 | DO_UINT8_CLAMPED_OP(Or, | ) |
| 296 | DO_UINT8_CLAMPED_OP(Xor, ^) |
| 297 | |
| 298 | #undef DO_UINT8_CLAMPED_OP |
| 299 | |
| 300 | |
| 301 | inline Object* DoExchangeUint8Clamped(Isolate* isolate, void* buffer, |
| 302 | size_t index, Handle<Object> obj) { |
| 303 | typedef int32_t convert_type; |
| 304 | uint8_t* p = static_cast<uint8_t*>(buffer) + index; |
| 305 | uint8_t result = ClampToUint8(FromObject<convert_type>(obj)); |
| 306 | uint8_t expected; |
| 307 | do { |
| 308 | expected = *p; |
| 309 | } while (CompareExchangeSeqCst(p, expected, result) != expected); |
| 310 | return ToObject(isolate, expected); |
| 311 | } |
| 312 | |
| 313 | |
| 314 | } // anonymous namespace |
| 315 | |
| 316 | // Duplicated from objects.h |
| 317 | // V has parameters (Type, type, TYPE, C type, element_size) |
| 318 | #define INTEGER_TYPED_ARRAYS(V) \ |
| 319 | V(Uint8, uint8, UINT8, uint8_t, 1) \ |
| 320 | V(Int8, int8, INT8, int8_t, 1) \ |
| 321 | V(Uint16, uint16, UINT16, uint16_t, 2) \ |
| 322 | V(Int16, int16, INT16, int16_t, 2) \ |
| 323 | V(Uint32, uint32, UINT32, uint32_t, 4) \ |
| 324 | V(Int32, int32, INT32, int32_t, 4) |
| 325 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 326 | RUNTIME_FUNCTION(Runtime_ThrowNotIntegerSharedTypedArrayError) { |
| 327 | HandleScope scope(isolate); |
| 328 | DCHECK_EQ(1, args.length()); |
| 329 | CONVERT_ARG_HANDLE_CHECKED(Object, value, 0); |
| 330 | THROW_NEW_ERROR_RETURN_FAILURE( |
| 331 | isolate, |
| 332 | NewTypeError(MessageTemplate::kNotIntegerSharedTypedArray, value)); |
| 333 | } |
| 334 | |
| 335 | RUNTIME_FUNCTION(Runtime_ThrowNotInt32SharedTypedArrayError) { |
| 336 | HandleScope scope(isolate); |
| 337 | DCHECK_EQ(1, args.length()); |
| 338 | CONVERT_ARG_HANDLE_CHECKED(Object, value, 0); |
| 339 | THROW_NEW_ERROR_RETURN_FAILURE( |
| 340 | isolate, NewTypeError(MessageTemplate::kNotInt32SharedTypedArray, value)); |
| 341 | } |
| 342 | |
| 343 | RUNTIME_FUNCTION(Runtime_ThrowInvalidAtomicAccessIndexError) { |
| 344 | HandleScope scope(isolate); |
| 345 | DCHECK_EQ(0, args.length()); |
| 346 | THROW_NEW_ERROR_RETURN_FAILURE( |
| 347 | isolate, NewRangeError(MessageTemplate::kInvalidAtomicAccessIndex)); |
| 348 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 349 | |
| 350 | RUNTIME_FUNCTION(Runtime_AtomicsCompareExchange) { |
| 351 | HandleScope scope(isolate); |
| 352 | DCHECK(args.length() == 4); |
| 353 | CONVERT_ARG_HANDLE_CHECKED(JSTypedArray, sta, 0); |
| 354 | CONVERT_SIZE_ARG_CHECKED(index, 1); |
| 355 | CONVERT_NUMBER_ARG_HANDLE_CHECKED(oldobj, 2); |
| 356 | CONVERT_NUMBER_ARG_HANDLE_CHECKED(newobj, 3); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 357 | CHECK(sta->GetBuffer()->is_shared()); |
| 358 | CHECK_LT(index, NumberToSize(isolate, sta->length())); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 359 | |
| 360 | uint8_t* source = static_cast<uint8_t*>(sta->GetBuffer()->backing_store()) + |
| 361 | NumberToSize(isolate, sta->byte_offset()); |
| 362 | |
| 363 | switch (sta->type()) { |
| 364 | #define TYPED_ARRAY_CASE(Type, typeName, TYPE, ctype, size) \ |
| 365 | case kExternal##Type##Array: \ |
| 366 | return DoCompareExchange<ctype>(isolate, source, index, oldobj, newobj); |
| 367 | |
| 368 | INTEGER_TYPED_ARRAYS(TYPED_ARRAY_CASE) |
| 369 | #undef TYPED_ARRAY_CASE |
| 370 | |
| 371 | case kExternalUint8ClampedArray: |
| 372 | return DoCompareExchangeUint8Clamped(isolate, source, index, oldobj, |
| 373 | newobj); |
| 374 | |
| 375 | default: |
| 376 | break; |
| 377 | } |
| 378 | |
| 379 | UNREACHABLE(); |
| 380 | return isolate->heap()->undefined_value(); |
| 381 | } |
| 382 | |
| 383 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 384 | RUNTIME_FUNCTION(Runtime_AtomicsAdd) { |
| 385 | HandleScope scope(isolate); |
| 386 | DCHECK(args.length() == 3); |
| 387 | CONVERT_ARG_HANDLE_CHECKED(JSTypedArray, sta, 0); |
| 388 | CONVERT_SIZE_ARG_CHECKED(index, 1); |
| 389 | CONVERT_NUMBER_ARG_HANDLE_CHECKED(value, 2); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 390 | CHECK(sta->GetBuffer()->is_shared()); |
| 391 | CHECK_LT(index, NumberToSize(isolate, sta->length())); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 392 | |
| 393 | uint8_t* source = static_cast<uint8_t*>(sta->GetBuffer()->backing_store()) + |
| 394 | NumberToSize(isolate, sta->byte_offset()); |
| 395 | |
| 396 | switch (sta->type()) { |
| 397 | #define TYPED_ARRAY_CASE(Type, typeName, TYPE, ctype, size) \ |
| 398 | case kExternal##Type##Array: \ |
| 399 | return DoAdd<ctype>(isolate, source, index, value); |
| 400 | |
| 401 | INTEGER_TYPED_ARRAYS(TYPED_ARRAY_CASE) |
| 402 | #undef TYPED_ARRAY_CASE |
| 403 | |
| 404 | case kExternalUint8ClampedArray: |
| 405 | return DoAddUint8Clamped(isolate, source, index, value); |
| 406 | |
| 407 | default: |
| 408 | break; |
| 409 | } |
| 410 | |
| 411 | UNREACHABLE(); |
| 412 | return isolate->heap()->undefined_value(); |
| 413 | } |
| 414 | |
| 415 | |
| 416 | RUNTIME_FUNCTION(Runtime_AtomicsSub) { |
| 417 | HandleScope scope(isolate); |
| 418 | DCHECK(args.length() == 3); |
| 419 | CONVERT_ARG_HANDLE_CHECKED(JSTypedArray, sta, 0); |
| 420 | CONVERT_SIZE_ARG_CHECKED(index, 1); |
| 421 | CONVERT_NUMBER_ARG_HANDLE_CHECKED(value, 2); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 422 | CHECK(sta->GetBuffer()->is_shared()); |
| 423 | CHECK_LT(index, NumberToSize(isolate, sta->length())); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 424 | |
| 425 | uint8_t* source = static_cast<uint8_t*>(sta->GetBuffer()->backing_store()) + |
| 426 | NumberToSize(isolate, sta->byte_offset()); |
| 427 | |
| 428 | switch (sta->type()) { |
| 429 | #define TYPED_ARRAY_CASE(Type, typeName, TYPE, ctype, size) \ |
| 430 | case kExternal##Type##Array: \ |
| 431 | return DoSub<ctype>(isolate, source, index, value); |
| 432 | |
| 433 | INTEGER_TYPED_ARRAYS(TYPED_ARRAY_CASE) |
| 434 | #undef TYPED_ARRAY_CASE |
| 435 | |
| 436 | case kExternalUint8ClampedArray: |
| 437 | return DoSubUint8Clamped(isolate, source, index, value); |
| 438 | |
| 439 | default: |
| 440 | break; |
| 441 | } |
| 442 | |
| 443 | UNREACHABLE(); |
| 444 | return isolate->heap()->undefined_value(); |
| 445 | } |
| 446 | |
| 447 | |
| 448 | RUNTIME_FUNCTION(Runtime_AtomicsAnd) { |
| 449 | HandleScope scope(isolate); |
| 450 | DCHECK(args.length() == 3); |
| 451 | CONVERT_ARG_HANDLE_CHECKED(JSTypedArray, sta, 0); |
| 452 | CONVERT_SIZE_ARG_CHECKED(index, 1); |
| 453 | CONVERT_NUMBER_ARG_HANDLE_CHECKED(value, 2); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 454 | CHECK(sta->GetBuffer()->is_shared()); |
| 455 | CHECK_LT(index, NumberToSize(isolate, sta->length())); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 456 | |
| 457 | uint8_t* source = static_cast<uint8_t*>(sta->GetBuffer()->backing_store()) + |
| 458 | NumberToSize(isolate, sta->byte_offset()); |
| 459 | |
| 460 | switch (sta->type()) { |
| 461 | #define TYPED_ARRAY_CASE(Type, typeName, TYPE, ctype, size) \ |
| 462 | case kExternal##Type##Array: \ |
| 463 | return DoAnd<ctype>(isolate, source, index, value); |
| 464 | |
| 465 | INTEGER_TYPED_ARRAYS(TYPED_ARRAY_CASE) |
| 466 | #undef TYPED_ARRAY_CASE |
| 467 | |
| 468 | case kExternalUint8ClampedArray: |
| 469 | return DoAndUint8Clamped(isolate, source, index, value); |
| 470 | |
| 471 | default: |
| 472 | break; |
| 473 | } |
| 474 | |
| 475 | UNREACHABLE(); |
| 476 | return isolate->heap()->undefined_value(); |
| 477 | } |
| 478 | |
| 479 | |
| 480 | RUNTIME_FUNCTION(Runtime_AtomicsOr) { |
| 481 | HandleScope scope(isolate); |
| 482 | DCHECK(args.length() == 3); |
| 483 | CONVERT_ARG_HANDLE_CHECKED(JSTypedArray, sta, 0); |
| 484 | CONVERT_SIZE_ARG_CHECKED(index, 1); |
| 485 | CONVERT_NUMBER_ARG_HANDLE_CHECKED(value, 2); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 486 | CHECK(sta->GetBuffer()->is_shared()); |
| 487 | CHECK_LT(index, NumberToSize(isolate, sta->length())); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 488 | |
| 489 | uint8_t* source = static_cast<uint8_t*>(sta->GetBuffer()->backing_store()) + |
| 490 | NumberToSize(isolate, sta->byte_offset()); |
| 491 | |
| 492 | switch (sta->type()) { |
| 493 | #define TYPED_ARRAY_CASE(Type, typeName, TYPE, ctype, size) \ |
| 494 | case kExternal##Type##Array: \ |
| 495 | return DoOr<ctype>(isolate, source, index, value); |
| 496 | |
| 497 | INTEGER_TYPED_ARRAYS(TYPED_ARRAY_CASE) |
| 498 | #undef TYPED_ARRAY_CASE |
| 499 | |
| 500 | case kExternalUint8ClampedArray: |
| 501 | return DoOrUint8Clamped(isolate, source, index, value); |
| 502 | |
| 503 | default: |
| 504 | break; |
| 505 | } |
| 506 | |
| 507 | UNREACHABLE(); |
| 508 | return isolate->heap()->undefined_value(); |
| 509 | } |
| 510 | |
| 511 | |
| 512 | RUNTIME_FUNCTION(Runtime_AtomicsXor) { |
| 513 | HandleScope scope(isolate); |
| 514 | DCHECK(args.length() == 3); |
| 515 | CONVERT_ARG_HANDLE_CHECKED(JSTypedArray, sta, 0); |
| 516 | CONVERT_SIZE_ARG_CHECKED(index, 1); |
| 517 | CONVERT_NUMBER_ARG_HANDLE_CHECKED(value, 2); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 518 | CHECK(sta->GetBuffer()->is_shared()); |
| 519 | CHECK_LT(index, NumberToSize(isolate, sta->length())); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 520 | |
| 521 | uint8_t* source = static_cast<uint8_t*>(sta->GetBuffer()->backing_store()) + |
| 522 | NumberToSize(isolate, sta->byte_offset()); |
| 523 | |
| 524 | switch (sta->type()) { |
| 525 | #define TYPED_ARRAY_CASE(Type, typeName, TYPE, ctype, size) \ |
| 526 | case kExternal##Type##Array: \ |
| 527 | return DoXor<ctype>(isolate, source, index, value); |
| 528 | |
| 529 | INTEGER_TYPED_ARRAYS(TYPED_ARRAY_CASE) |
| 530 | #undef TYPED_ARRAY_CASE |
| 531 | |
| 532 | case kExternalUint8ClampedArray: |
| 533 | return DoXorUint8Clamped(isolate, source, index, value); |
| 534 | |
| 535 | default: |
| 536 | break; |
| 537 | } |
| 538 | |
| 539 | UNREACHABLE(); |
| 540 | return isolate->heap()->undefined_value(); |
| 541 | } |
| 542 | |
| 543 | |
| 544 | RUNTIME_FUNCTION(Runtime_AtomicsExchange) { |
| 545 | HandleScope scope(isolate); |
| 546 | DCHECK(args.length() == 3); |
| 547 | CONVERT_ARG_HANDLE_CHECKED(JSTypedArray, sta, 0); |
| 548 | CONVERT_SIZE_ARG_CHECKED(index, 1); |
| 549 | CONVERT_NUMBER_ARG_HANDLE_CHECKED(value, 2); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 550 | CHECK(sta->GetBuffer()->is_shared()); |
| 551 | CHECK_LT(index, NumberToSize(isolate, sta->length())); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 552 | |
| 553 | uint8_t* source = static_cast<uint8_t*>(sta->GetBuffer()->backing_store()) + |
| 554 | NumberToSize(isolate, sta->byte_offset()); |
| 555 | |
| 556 | switch (sta->type()) { |
| 557 | #define TYPED_ARRAY_CASE(Type, typeName, TYPE, ctype, size) \ |
| 558 | case kExternal##Type##Array: \ |
| 559 | return DoExchange<ctype>(isolate, source, index, value); |
| 560 | |
| 561 | INTEGER_TYPED_ARRAYS(TYPED_ARRAY_CASE) |
| 562 | #undef TYPED_ARRAY_CASE |
| 563 | |
| 564 | case kExternalUint8ClampedArray: |
| 565 | return DoExchangeUint8Clamped(isolate, source, index, value); |
| 566 | |
| 567 | default: |
| 568 | break; |
| 569 | } |
| 570 | |
| 571 | UNREACHABLE(); |
| 572 | return isolate->heap()->undefined_value(); |
| 573 | } |
| 574 | |
| 575 | |
| 576 | RUNTIME_FUNCTION(Runtime_AtomicsIsLockFree) { |
| 577 | HandleScope scope(isolate); |
| 578 | DCHECK(args.length() == 1); |
| 579 | CONVERT_NUMBER_ARG_HANDLE_CHECKED(size, 0); |
| 580 | uint32_t usize = NumberToUint32(*size); |
| 581 | return isolate->heap()->ToBoolean(AtomicIsLockFree(usize)); |
| 582 | } |
| 583 | } // namespace internal |
| 584 | } // namespace v8 |