kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 1 | // Copyright 2011 the V8 project authors. All rights reserved. |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 2 | // Redistribution and use in source and binary forms, with or without |
| 3 | // modification, are permitted provided that the following conditions are |
| 4 | // met: |
| 5 | // |
| 6 | // * Redistributions of source code must retain the above copyright |
| 7 | // notice, this list of conditions and the following disclaimer. |
| 8 | // * Redistributions in binary form must reproduce the above |
| 9 | // copyright notice, this list of conditions and the following |
| 10 | // disclaimer in the documentation and/or other materials provided |
| 11 | // with the distribution. |
| 12 | // * Neither the name of Google Inc. nor the names of its |
| 13 | // contributors may be used to endorse or promote products derived |
| 14 | // from this software without specific prior written permission. |
| 15 | // |
| 16 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 17 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 18 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 19 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 20 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 21 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 22 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 26 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | |
| 28 | #include "v8.h" |
| 29 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 30 | #if defined(V8_TARGET_ARCH_MIPS) |
| 31 | |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 32 | #include "ic-inl.h" |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 33 | #include "codegen.h" |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 34 | #include "stub-cache.h" |
| 35 | |
| 36 | namespace v8 { |
| 37 | namespace internal { |
| 38 | |
| 39 | #define __ ACCESS_MASM(masm) |
| 40 | |
| 41 | |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 42 | static void ProbeTable(Isolate* isolate, |
| 43 | MacroAssembler* masm, |
| 44 | Code::Flags flags, |
| 45 | StubCache::Table table, |
| 46 | Register name, |
| 47 | Register offset, |
| 48 | Register scratch, |
| 49 | Register scratch2) { |
| 50 | ExternalReference key_offset(isolate->stub_cache()->key_reference(table)); |
| 51 | ExternalReference value_offset(isolate->stub_cache()->value_reference(table)); |
| 52 | |
| 53 | uint32_t key_off_addr = reinterpret_cast<uint32_t>(key_offset.address()); |
| 54 | uint32_t value_off_addr = reinterpret_cast<uint32_t>(value_offset.address()); |
| 55 | |
| 56 | // Check the relative positions of the address fields. |
| 57 | ASSERT(value_off_addr > key_off_addr); |
| 58 | ASSERT((value_off_addr - key_off_addr) % 4 == 0); |
| 59 | ASSERT((value_off_addr - key_off_addr) < (256 * 4)); |
| 60 | |
| 61 | Label miss; |
| 62 | Register offsets_base_addr = scratch; |
| 63 | |
| 64 | // Check that the key in the entry matches the name. |
| 65 | __ li(offsets_base_addr, Operand(key_offset)); |
| 66 | __ sll(scratch2, offset, 1); |
| 67 | __ addu(scratch2, offsets_base_addr, scratch2); |
| 68 | __ lw(scratch2, MemOperand(scratch2)); |
| 69 | __ Branch(&miss, ne, name, Operand(scratch2)); |
| 70 | |
| 71 | // Get the code entry from the cache. |
| 72 | __ Addu(offsets_base_addr, offsets_base_addr, |
| 73 | Operand(value_off_addr - key_off_addr)); |
| 74 | __ sll(scratch2, offset, 1); |
| 75 | __ addu(scratch2, offsets_base_addr, scratch2); |
| 76 | __ lw(scratch2, MemOperand(scratch2)); |
| 77 | |
| 78 | // Check that the flags match what we're looking for. |
| 79 | __ lw(scratch2, FieldMemOperand(scratch2, Code::kFlagsOffset)); |
| 80 | __ And(scratch2, scratch2, Operand(~Code::kFlagsNotUsedInLookup)); |
| 81 | __ Branch(&miss, ne, scratch2, Operand(flags)); |
| 82 | |
| 83 | // Re-load code entry from cache. |
| 84 | __ sll(offset, offset, 1); |
| 85 | __ addu(offset, offset, offsets_base_addr); |
| 86 | __ lw(offset, MemOperand(offset)); |
| 87 | |
| 88 | // Jump to the first instruction in the code stub. |
| 89 | __ Addu(offset, offset, Operand(Code::kHeaderSize - kHeapObjectTag)); |
| 90 | __ Jump(offset); |
| 91 | |
| 92 | // Miss: fall through. |
| 93 | __ bind(&miss); |
| 94 | } |
| 95 | |
| 96 | |
| 97 | // Helper function used to check that the dictionary doesn't contain |
| 98 | // the property. This function may return false negatives, so miss_label |
| 99 | // must always call a backup property check that is complete. |
| 100 | // This function is safe to call if the receiver has fast properties. |
| 101 | // Name must be a symbol and receiver must be a heap object. |
| 102 | MUST_USE_RESULT static MaybeObject* GenerateDictionaryNegativeLookup( |
| 103 | MacroAssembler* masm, |
| 104 | Label* miss_label, |
| 105 | Register receiver, |
| 106 | String* name, |
| 107 | Register scratch0, |
| 108 | Register scratch1) { |
| 109 | ASSERT(name->IsSymbol()); |
| 110 | Counters* counters = masm->isolate()->counters(); |
| 111 | __ IncrementCounter(counters->negative_lookups(), 1, scratch0, scratch1); |
| 112 | __ IncrementCounter(counters->negative_lookups_miss(), 1, scratch0, scratch1); |
| 113 | |
| 114 | Label done; |
| 115 | |
| 116 | const int kInterceptorOrAccessCheckNeededMask = |
| 117 | (1 << Map::kHasNamedInterceptor) | (1 << Map::kIsAccessCheckNeeded); |
| 118 | |
| 119 | // Bail out if the receiver has a named interceptor or requires access checks. |
| 120 | Register map = scratch1; |
| 121 | __ lw(map, FieldMemOperand(receiver, HeapObject::kMapOffset)); |
| 122 | __ lbu(scratch0, FieldMemOperand(map, Map::kBitFieldOffset)); |
| 123 | __ And(at, scratch0, Operand(kInterceptorOrAccessCheckNeededMask)); |
| 124 | __ Branch(miss_label, ne, at, Operand(zero_reg)); |
| 125 | |
| 126 | |
| 127 | // Check that receiver is a JSObject. |
| 128 | __ lbu(scratch0, FieldMemOperand(map, Map::kInstanceTypeOffset)); |
erik.corry@gmail.com | d6076d9 | 2011-06-06 09:39:18 +0000 | [diff] [blame] | 129 | __ Branch(miss_label, lt, scratch0, Operand(FIRST_SPEC_OBJECT_TYPE)); |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 130 | |
| 131 | // Load properties array. |
| 132 | Register properties = scratch0; |
| 133 | __ lw(properties, FieldMemOperand(receiver, JSObject::kPropertiesOffset)); |
| 134 | // Check that the properties array is a dictionary. |
| 135 | __ lw(map, FieldMemOperand(properties, HeapObject::kMapOffset)); |
| 136 | Register tmp = properties; |
| 137 | __ LoadRoot(tmp, Heap::kHashTableMapRootIndex); |
| 138 | __ Branch(miss_label, ne, map, Operand(tmp)); |
| 139 | |
| 140 | // Restore the temporarily used register. |
| 141 | __ lw(properties, FieldMemOperand(receiver, JSObject::kPropertiesOffset)); |
| 142 | |
| 143 | MaybeObject* result = StringDictionaryLookupStub::GenerateNegativeLookup( |
| 144 | masm, |
| 145 | miss_label, |
| 146 | &done, |
| 147 | receiver, |
| 148 | properties, |
| 149 | name, |
| 150 | scratch1); |
| 151 | if (result->IsFailure()) return result; |
| 152 | |
| 153 | __ bind(&done); |
| 154 | __ DecrementCounter(counters->negative_lookups_miss(), 1, scratch0, scratch1); |
| 155 | |
| 156 | return result; |
| 157 | } |
| 158 | |
| 159 | |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 160 | void StubCache::GenerateProbe(MacroAssembler* masm, |
| 161 | Code::Flags flags, |
| 162 | Register receiver, |
| 163 | Register name, |
| 164 | Register scratch, |
fschneider@chromium.org | e03fb64 | 2010-11-01 12:34:09 +0000 | [diff] [blame] | 165 | Register extra, |
| 166 | Register extra2) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 167 | Isolate* isolate = masm->isolate(); |
| 168 | Label miss; |
| 169 | |
| 170 | // Make sure that code is valid. The shifting code relies on the |
| 171 | // entry size being 8. |
| 172 | ASSERT(sizeof(Entry) == 8); |
| 173 | |
| 174 | // Make sure the flags does not name a specific type. |
| 175 | ASSERT(Code::ExtractTypeFromFlags(flags) == 0); |
| 176 | |
| 177 | // Make sure that there are no register conflicts. |
| 178 | ASSERT(!scratch.is(receiver)); |
| 179 | ASSERT(!scratch.is(name)); |
| 180 | ASSERT(!extra.is(receiver)); |
| 181 | ASSERT(!extra.is(name)); |
| 182 | ASSERT(!extra.is(scratch)); |
| 183 | ASSERT(!extra2.is(receiver)); |
| 184 | ASSERT(!extra2.is(name)); |
| 185 | ASSERT(!extra2.is(scratch)); |
| 186 | ASSERT(!extra2.is(extra)); |
| 187 | |
| 188 | // Check scratch, extra and extra2 registers are valid. |
| 189 | ASSERT(!scratch.is(no_reg)); |
| 190 | ASSERT(!extra.is(no_reg)); |
| 191 | ASSERT(!extra2.is(no_reg)); |
| 192 | |
| 193 | // Check that the receiver isn't a smi. |
| 194 | __ JumpIfSmi(receiver, &miss, t0); |
| 195 | |
| 196 | // Get the map of the receiver and compute the hash. |
| 197 | __ lw(scratch, FieldMemOperand(name, String::kHashFieldOffset)); |
| 198 | __ lw(t8, FieldMemOperand(receiver, HeapObject::kMapOffset)); |
| 199 | __ Addu(scratch, scratch, Operand(t8)); |
| 200 | __ Xor(scratch, scratch, Operand(flags)); |
| 201 | __ And(scratch, |
| 202 | scratch, |
| 203 | Operand((kPrimaryTableSize - 1) << kHeapObjectTagSize)); |
| 204 | |
| 205 | // Probe the primary table. |
| 206 | ProbeTable(isolate, masm, flags, kPrimary, name, scratch, extra, extra2); |
| 207 | |
| 208 | // Primary miss: Compute hash for secondary probe. |
| 209 | __ Subu(scratch, scratch, Operand(name)); |
| 210 | __ Addu(scratch, scratch, Operand(flags)); |
| 211 | __ And(scratch, |
| 212 | scratch, |
| 213 | Operand((kSecondaryTableSize - 1) << kHeapObjectTagSize)); |
| 214 | |
| 215 | // Probe the secondary table. |
| 216 | ProbeTable(isolate, masm, flags, kSecondary, name, scratch, extra, extra2); |
| 217 | |
| 218 | // Cache miss: Fall-through and let caller handle the miss by |
| 219 | // entering the runtime system. |
| 220 | __ bind(&miss); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 221 | } |
| 222 | |
| 223 | |
| 224 | void StubCompiler::GenerateLoadGlobalFunctionPrototype(MacroAssembler* masm, |
| 225 | int index, |
| 226 | Register prototype) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 227 | // Load the global or builtins object from the current context. |
| 228 | __ lw(prototype, MemOperand(cp, Context::SlotOffset(Context::GLOBAL_INDEX))); |
| 229 | // Load the global context from the global or builtins object. |
| 230 | __ lw(prototype, |
| 231 | FieldMemOperand(prototype, GlobalObject::kGlobalContextOffset)); |
| 232 | // Load the function from the global context. |
| 233 | __ lw(prototype, MemOperand(prototype, Context::SlotOffset(index))); |
| 234 | // Load the initial map. The global functions all have initial maps. |
| 235 | __ lw(prototype, |
| 236 | FieldMemOperand(prototype, JSFunction::kPrototypeOrInitialMapOffset)); |
| 237 | // Load the prototype from the initial map. |
| 238 | __ lw(prototype, FieldMemOperand(prototype, Map::kPrototypeOffset)); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 239 | } |
| 240 | |
| 241 | |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 242 | void StubCompiler::GenerateDirectLoadGlobalFunctionPrototype( |
| 243 | MacroAssembler* masm, int index, Register prototype, Label* miss) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 244 | Isolate* isolate = masm->isolate(); |
| 245 | // Check we're still in the same context. |
| 246 | __ lw(prototype, MemOperand(cp, Context::SlotOffset(Context::GLOBAL_INDEX))); |
| 247 | ASSERT(!prototype.is(at)); |
| 248 | __ li(at, isolate->global()); |
| 249 | __ Branch(miss, ne, prototype, Operand(at)); |
| 250 | // Get the global function with the given index. |
| 251 | JSFunction* function = |
| 252 | JSFunction::cast(isolate->global_context()->get(index)); |
| 253 | // Load its initial map. The global functions all have initial maps. |
| 254 | __ li(prototype, Handle<Map>(function->initial_map())); |
| 255 | // Load the prototype from the initial map. |
| 256 | __ lw(prototype, FieldMemOperand(prototype, Map::kPrototypeOffset)); |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 257 | } |
| 258 | |
| 259 | |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 260 | // Load a fast property out of a holder object (src). In-object properties |
| 261 | // are loaded directly otherwise the property is loaded from the properties |
| 262 | // fixed array. |
| 263 | void StubCompiler::GenerateFastPropertyLoad(MacroAssembler* masm, |
| 264 | Register dst, Register src, |
| 265 | JSObject* holder, int index) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 266 | // Adjust for the number of properties stored in the holder. |
| 267 | index -= holder->map()->inobject_properties(); |
| 268 | if (index < 0) { |
| 269 | // Get the property straight out of the holder. |
| 270 | int offset = holder->map()->instance_size() + (index * kPointerSize); |
| 271 | __ lw(dst, FieldMemOperand(src, offset)); |
| 272 | } else { |
| 273 | // Calculate the offset into the properties array. |
| 274 | int offset = index * kPointerSize + FixedArray::kHeaderSize; |
| 275 | __ lw(dst, FieldMemOperand(src, JSObject::kPropertiesOffset)); |
| 276 | __ lw(dst, FieldMemOperand(dst, offset)); |
| 277 | } |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 278 | } |
| 279 | |
| 280 | |
| 281 | void StubCompiler::GenerateLoadArrayLength(MacroAssembler* masm, |
| 282 | Register receiver, |
| 283 | Register scratch, |
| 284 | Label* miss_label) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 285 | // Check that the receiver isn't a smi. |
| 286 | __ And(scratch, receiver, Operand(kSmiTagMask)); |
| 287 | __ Branch(miss_label, eq, scratch, Operand(zero_reg)); |
| 288 | |
| 289 | // Check that the object is a JS array. |
| 290 | __ GetObjectType(receiver, scratch, scratch); |
| 291 | __ Branch(miss_label, ne, scratch, Operand(JS_ARRAY_TYPE)); |
| 292 | |
| 293 | // Load length directly from the JS array. |
| 294 | __ lw(v0, FieldMemOperand(receiver, JSArray::kLengthOffset)); |
| 295 | __ Ret(); |
| 296 | } |
| 297 | |
| 298 | |
| 299 | // Generate code to check if an object is a string. If the object is a |
| 300 | // heap object, its map's instance type is left in the scratch1 register. |
| 301 | // If this is not needed, scratch1 and scratch2 may be the same register. |
| 302 | static void GenerateStringCheck(MacroAssembler* masm, |
| 303 | Register receiver, |
| 304 | Register scratch1, |
| 305 | Register scratch2, |
| 306 | Label* smi, |
| 307 | Label* non_string_object) { |
| 308 | // Check that the receiver isn't a smi. |
| 309 | __ JumpIfSmi(receiver, smi, t0); |
| 310 | |
| 311 | // Check that the object is a string. |
| 312 | __ lw(scratch1, FieldMemOperand(receiver, HeapObject::kMapOffset)); |
| 313 | __ lbu(scratch1, FieldMemOperand(scratch1, Map::kInstanceTypeOffset)); |
| 314 | __ And(scratch2, scratch1, Operand(kIsNotStringMask)); |
| 315 | // The cast is to resolve the overload for the argument of 0x0. |
| 316 | __ Branch(non_string_object, |
| 317 | ne, |
| 318 | scratch2, |
| 319 | Operand(static_cast<int32_t>(kStringTag))); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 320 | } |
| 321 | |
| 322 | |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 323 | // Generate code to load the length from a string object and return the length. |
| 324 | // If the receiver object is not a string or a wrapped string object the |
| 325 | // execution continues at the miss label. The register containing the |
| 326 | // receiver is potentially clobbered. |
| 327 | void StubCompiler::GenerateLoadStringLength(MacroAssembler* masm, |
| 328 | Register receiver, |
| 329 | Register scratch1, |
| 330 | Register scratch2, |
| 331 | Label* miss, |
| 332 | bool support_wrappers) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 333 | Label check_wrapper; |
| 334 | |
| 335 | // Check if the object is a string leaving the instance type in the |
| 336 | // scratch1 register. |
| 337 | GenerateStringCheck(masm, receiver, scratch1, scratch2, miss, |
| 338 | support_wrappers ? &check_wrapper : miss); |
| 339 | |
| 340 | // Load length directly from the string. |
| 341 | __ lw(v0, FieldMemOperand(receiver, String::kLengthOffset)); |
| 342 | __ Ret(); |
| 343 | |
| 344 | if (support_wrappers) { |
| 345 | // Check if the object is a JSValue wrapper. |
| 346 | __ bind(&check_wrapper); |
| 347 | __ Branch(miss, ne, scratch1, Operand(JS_VALUE_TYPE)); |
| 348 | |
| 349 | // Unwrap the value and check if the wrapped value is a string. |
| 350 | __ lw(scratch1, FieldMemOperand(receiver, JSValue::kValueOffset)); |
| 351 | GenerateStringCheck(masm, scratch1, scratch2, scratch2, miss, miss); |
| 352 | __ lw(v0, FieldMemOperand(scratch1, String::kLengthOffset)); |
| 353 | __ Ret(); |
| 354 | } |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 355 | } |
| 356 | |
| 357 | |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 358 | void StubCompiler::GenerateLoadFunctionPrototype(MacroAssembler* masm, |
| 359 | Register receiver, |
| 360 | Register scratch1, |
| 361 | Register scratch2, |
| 362 | Label* miss_label) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 363 | __ TryGetFunctionPrototype(receiver, scratch1, scratch2, miss_label); |
| 364 | __ mov(v0, scratch1); |
| 365 | __ Ret(); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 366 | } |
| 367 | |
| 368 | |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 369 | // Generate StoreField code, value is passed in a0 register. |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 370 | // After executing generated code, the receiver_reg and name_reg |
| 371 | // may be clobbered. |
| 372 | void StubCompiler::GenerateStoreField(MacroAssembler* masm, |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 373 | JSObject* object, |
| 374 | int index, |
| 375 | Map* transition, |
| 376 | Register receiver_reg, |
| 377 | Register name_reg, |
| 378 | Register scratch, |
| 379 | Label* miss_label) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 380 | // a0 : value. |
| 381 | Label exit; |
| 382 | |
| 383 | // Check that the receiver isn't a smi. |
| 384 | __ JumpIfSmi(receiver_reg, miss_label, scratch); |
| 385 | |
| 386 | // Check that the map of the receiver hasn't changed. |
| 387 | __ lw(scratch, FieldMemOperand(receiver_reg, HeapObject::kMapOffset)); |
| 388 | __ Branch(miss_label, ne, scratch, Operand(Handle<Map>(object->map()))); |
| 389 | |
| 390 | // Perform global security token check if needed. |
| 391 | if (object->IsJSGlobalProxy()) { |
| 392 | __ CheckAccessGlobalProxy(receiver_reg, scratch, miss_label); |
| 393 | } |
| 394 | |
| 395 | // Stub never generated for non-global objects that require access |
| 396 | // checks. |
| 397 | ASSERT(object->IsJSGlobalProxy() || !object->IsAccessCheckNeeded()); |
| 398 | |
| 399 | // Perform map transition for the receiver if necessary. |
| 400 | if ((transition != NULL) && (object->map()->unused_property_fields() == 0)) { |
| 401 | // The properties must be extended before we can store the value. |
| 402 | // We jump to a runtime call that extends the properties array. |
| 403 | __ push(receiver_reg); |
| 404 | __ li(a2, Operand(Handle<Map>(transition))); |
| 405 | __ Push(a2, a0); |
| 406 | __ TailCallExternalReference( |
| 407 | ExternalReference(IC_Utility(IC::kSharedStoreIC_ExtendStorage), |
| 408 | masm->isolate()), |
| 409 | 3, 1); |
| 410 | return; |
| 411 | } |
| 412 | |
| 413 | if (transition != NULL) { |
| 414 | // Update the map of the object; no write barrier updating is |
| 415 | // needed because the map is never in new space. |
| 416 | __ li(t0, Operand(Handle<Map>(transition))); |
| 417 | __ sw(t0, FieldMemOperand(receiver_reg, HeapObject::kMapOffset)); |
| 418 | } |
| 419 | |
| 420 | // Adjust for the number of properties stored in the object. Even in the |
| 421 | // face of a transition we can use the old map here because the size of the |
| 422 | // object and the number of in-object properties is not going to change. |
| 423 | index -= object->map()->inobject_properties(); |
| 424 | |
| 425 | if (index < 0) { |
| 426 | // Set the property straight into the object. |
| 427 | int offset = object->map()->instance_size() + (index * kPointerSize); |
| 428 | __ sw(a0, FieldMemOperand(receiver_reg, offset)); |
| 429 | |
| 430 | // Skip updating write barrier if storing a smi. |
| 431 | __ JumpIfSmi(a0, &exit, scratch); |
| 432 | |
| 433 | // Update the write barrier for the array address. |
| 434 | // Pass the now unused name_reg as a scratch register. |
| 435 | __ RecordWrite(receiver_reg, Operand(offset), name_reg, scratch); |
| 436 | } else { |
| 437 | // Write to the properties array. |
| 438 | int offset = index * kPointerSize + FixedArray::kHeaderSize; |
| 439 | // Get the properties array. |
| 440 | __ lw(scratch, FieldMemOperand(receiver_reg, JSObject::kPropertiesOffset)); |
| 441 | __ sw(a0, FieldMemOperand(scratch, offset)); |
| 442 | |
| 443 | // Skip updating write barrier if storing a smi. |
| 444 | __ JumpIfSmi(a0, &exit); |
| 445 | |
| 446 | // Update the write barrier for the array address. |
| 447 | // Ok to clobber receiver_reg and name_reg, since we return. |
| 448 | __ RecordWrite(scratch, Operand(offset), name_reg, receiver_reg); |
| 449 | } |
| 450 | |
| 451 | // Return the value (register v0). |
| 452 | __ bind(&exit); |
| 453 | __ mov(v0, a0); |
| 454 | __ Ret(); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 455 | } |
| 456 | |
| 457 | |
| 458 | void StubCompiler::GenerateLoadMiss(MacroAssembler* masm, Code::Kind kind) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 459 | ASSERT(kind == Code::LOAD_IC || kind == Code::KEYED_LOAD_IC); |
| 460 | Code* code = NULL; |
| 461 | if (kind == Code::LOAD_IC) { |
| 462 | code = masm->isolate()->builtins()->builtin(Builtins::kLoadIC_Miss); |
| 463 | } else { |
| 464 | code = masm->isolate()->builtins()->builtin(Builtins::kKeyedLoadIC_Miss); |
| 465 | } |
| 466 | |
| 467 | Handle<Code> ic(code); |
| 468 | __ Jump(ic, RelocInfo::CODE_TARGET); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 469 | } |
| 470 | |
| 471 | |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 472 | static void GenerateCallFunction(MacroAssembler* masm, |
| 473 | Object* object, |
| 474 | const ParameterCount& arguments, |
erik.corry@gmail.com | d6076d9 | 2011-06-06 09:39:18 +0000 | [diff] [blame] | 475 | Label* miss, |
| 476 | Code::ExtraICState extra_ic_state) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 477 | // ----------- S t a t e ------------- |
| 478 | // -- a0: receiver |
| 479 | // -- a1: function to call |
| 480 | // ----------------------------------- |
| 481 | // Check that the function really is a function. |
| 482 | __ JumpIfSmi(a1, miss); |
| 483 | __ GetObjectType(a1, a3, a3); |
| 484 | __ Branch(miss, ne, a3, Operand(JS_FUNCTION_TYPE)); |
| 485 | |
| 486 | // Patch the receiver on the stack with the global proxy if |
| 487 | // necessary. |
| 488 | if (object->IsGlobalObject()) { |
| 489 | __ lw(a3, FieldMemOperand(a0, GlobalObject::kGlobalReceiverOffset)); |
| 490 | __ sw(a3, MemOperand(sp, arguments.immediate() * kPointerSize)); |
| 491 | } |
| 492 | |
| 493 | // Invoke the function. |
erik.corry@gmail.com | d6076d9 | 2011-06-06 09:39:18 +0000 | [diff] [blame] | 494 | CallKind call_kind = CallICBase::Contextual::decode(extra_ic_state) |
| 495 | ? CALL_AS_FUNCTION |
| 496 | : CALL_AS_METHOD; |
| 497 | __ InvokeFunction(a1, arguments, JUMP_FUNCTION, NullCallWrapper(), call_kind); |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 498 | } |
| 499 | |
| 500 | |
| 501 | static void PushInterceptorArguments(MacroAssembler* masm, |
| 502 | Register receiver, |
| 503 | Register holder, |
| 504 | Register name, |
| 505 | JSObject* holder_obj) { |
| 506 | __ push(name); |
| 507 | InterceptorInfo* interceptor = holder_obj->GetNamedInterceptor(); |
| 508 | ASSERT(!masm->isolate()->heap()->InNewSpace(interceptor)); |
| 509 | Register scratch = name; |
| 510 | __ li(scratch, Operand(Handle<Object>(interceptor))); |
| 511 | __ Push(scratch, receiver, holder); |
| 512 | __ lw(scratch, FieldMemOperand(scratch, InterceptorInfo::kDataOffset)); |
| 513 | __ push(scratch); |
| 514 | } |
| 515 | |
| 516 | |
| 517 | static void CompileCallLoadPropertyWithInterceptor(MacroAssembler* masm, |
| 518 | Register receiver, |
| 519 | Register holder, |
| 520 | Register name, |
| 521 | JSObject* holder_obj) { |
| 522 | PushInterceptorArguments(masm, receiver, holder, name, holder_obj); |
| 523 | |
| 524 | ExternalReference ref = |
| 525 | ExternalReference(IC_Utility(IC::kLoadPropertyWithInterceptorOnly), |
| 526 | masm->isolate()); |
| 527 | __ li(a0, Operand(5)); |
| 528 | __ li(a1, Operand(ref)); |
| 529 | |
| 530 | CEntryStub stub(1); |
| 531 | __ CallStub(&stub); |
| 532 | } |
| 533 | |
| 534 | |
| 535 | static const int kFastApiCallArguments = 3; |
| 536 | |
| 537 | |
| 538 | // Reserves space for the extra arguments to FastHandleApiCall in the |
| 539 | // caller's frame. |
| 540 | // |
| 541 | // These arguments are set by CheckPrototypes and GenerateFastApiDirectCall. |
| 542 | static void ReserveSpaceForFastApiCall(MacroAssembler* masm, |
| 543 | Register scratch) { |
| 544 | ASSERT(Smi::FromInt(0) == 0); |
| 545 | for (int i = 0; i < kFastApiCallArguments; i++) { |
| 546 | __ push(zero_reg); |
| 547 | } |
| 548 | } |
| 549 | |
| 550 | |
| 551 | // Undoes the effects of ReserveSpaceForFastApiCall. |
| 552 | static void FreeSpaceForFastApiCall(MacroAssembler* masm) { |
| 553 | __ Drop(kFastApiCallArguments); |
| 554 | } |
| 555 | |
| 556 | |
| 557 | static MaybeObject* GenerateFastApiDirectCall(MacroAssembler* masm, |
| 558 | const CallOptimization& optimization, |
| 559 | int argc) { |
| 560 | // ----------- S t a t e ------------- |
| 561 | // -- sp[0] : holder (set by CheckPrototypes) |
| 562 | // -- sp[4] : callee js function |
| 563 | // -- sp[8] : call data |
| 564 | // -- sp[12] : last js argument |
| 565 | // -- ... |
| 566 | // -- sp[(argc + 3) * 4] : first js argument |
| 567 | // -- sp[(argc + 4) * 4] : receiver |
| 568 | // ----------------------------------- |
| 569 | // Get the function and setup the context. |
| 570 | JSFunction* function = optimization.constant_function(); |
| 571 | __ li(t1, Operand(Handle<JSFunction>(function))); |
| 572 | __ lw(cp, FieldMemOperand(t1, JSFunction::kContextOffset)); |
| 573 | |
| 574 | // Pass the additional arguments FastHandleApiCall expects. |
| 575 | Object* call_data = optimization.api_call_info()->data(); |
| 576 | Handle<CallHandlerInfo> api_call_info_handle(optimization.api_call_info()); |
| 577 | if (masm->isolate()->heap()->InNewSpace(call_data)) { |
| 578 | __ li(a0, api_call_info_handle); |
| 579 | __ lw(t2, FieldMemOperand(a0, CallHandlerInfo::kDataOffset)); |
| 580 | } else { |
| 581 | __ li(t2, Operand(Handle<Object>(call_data))); |
| 582 | } |
| 583 | |
| 584 | // Store js function and call data. |
| 585 | __ sw(t1, MemOperand(sp, 1 * kPointerSize)); |
| 586 | __ sw(t2, MemOperand(sp, 2 * kPointerSize)); |
| 587 | |
| 588 | // a2 points to call data as expected by Arguments |
| 589 | // (refer to layout above). |
| 590 | __ Addu(a2, sp, Operand(2 * kPointerSize)); |
| 591 | |
| 592 | Object* callback = optimization.api_call_info()->callback(); |
| 593 | Address api_function_address = v8::ToCData<Address>(callback); |
| 594 | ApiFunction fun(api_function_address); |
| 595 | |
| 596 | const int kApiStackSpace = 4; |
| 597 | |
| 598 | __ EnterExitFrame(false, kApiStackSpace); |
| 599 | |
| 600 | // NOTE: the O32 abi requires a0 to hold a special pointer when returning a |
| 601 | // struct from the function (which is currently the case). This means we pass |
| 602 | // the first argument in a1 instead of a0. TryCallApiFunctionAndReturn |
| 603 | // will handle setting up a0. |
| 604 | |
| 605 | // a1 = v8::Arguments& |
| 606 | // Arguments is built at sp + 1 (sp is a reserved spot for ra). |
| 607 | __ Addu(a1, sp, kPointerSize); |
| 608 | |
| 609 | // v8::Arguments::implicit_args = data |
| 610 | __ sw(a2, MemOperand(a1, 0 * kPointerSize)); |
| 611 | // v8::Arguments::values = last argument |
| 612 | __ Addu(t0, a2, Operand(argc * kPointerSize)); |
| 613 | __ sw(t0, MemOperand(a1, 1 * kPointerSize)); |
| 614 | // v8::Arguments::length_ = argc |
| 615 | __ li(t0, Operand(argc)); |
| 616 | __ sw(t0, MemOperand(a1, 2 * kPointerSize)); |
| 617 | // v8::Arguments::is_construct_call = 0 |
| 618 | __ sw(zero_reg, MemOperand(a1, 3 * kPointerSize)); |
| 619 | |
| 620 | // Emitting a stub call may try to allocate (if the code is not |
| 621 | // already generated). Do not allow the assembler to perform a |
| 622 | // garbage collection but instead return the allocation failure |
| 623 | // object. |
| 624 | const int kStackUnwindSpace = argc + kFastApiCallArguments + 1; |
| 625 | ExternalReference ref = |
| 626 | ExternalReference(&fun, |
| 627 | ExternalReference::DIRECT_API_CALL, |
| 628 | masm->isolate()); |
| 629 | return masm->TryCallApiFunctionAndReturn(ref, kStackUnwindSpace); |
| 630 | } |
| 631 | |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 632 | class CallInterceptorCompiler BASE_EMBEDDED { |
| 633 | public: |
| 634 | CallInterceptorCompiler(StubCompiler* stub_compiler, |
| 635 | const ParameterCount& arguments, |
erik.corry@gmail.com | d6076d9 | 2011-06-06 09:39:18 +0000 | [diff] [blame] | 636 | Register name, |
| 637 | Code::ExtraICState extra_ic_state) |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 638 | : stub_compiler_(stub_compiler), |
| 639 | arguments_(arguments), |
erik.corry@gmail.com | d6076d9 | 2011-06-06 09:39:18 +0000 | [diff] [blame] | 640 | name_(name), |
| 641 | extra_ic_state_(extra_ic_state) {} |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 642 | |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 643 | MaybeObject* Compile(MacroAssembler* masm, |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 644 | JSObject* object, |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 645 | JSObject* holder, |
| 646 | String* name, |
| 647 | LookupResult* lookup, |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 648 | Register receiver, |
| 649 | Register scratch1, |
| 650 | Register scratch2, |
| 651 | Register scratch3, |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 652 | Label* miss) { |
| 653 | ASSERT(holder->HasNamedInterceptor()); |
| 654 | ASSERT(!holder->GetNamedInterceptor()->getter()->IsUndefined()); |
| 655 | |
| 656 | // Check that the receiver isn't a smi. |
| 657 | __ JumpIfSmi(receiver, miss); |
| 658 | |
| 659 | CallOptimization optimization(lookup); |
| 660 | |
| 661 | if (optimization.is_constant_call()) { |
| 662 | return CompileCacheable(masm, |
| 663 | object, |
| 664 | receiver, |
| 665 | scratch1, |
| 666 | scratch2, |
| 667 | scratch3, |
| 668 | holder, |
| 669 | lookup, |
| 670 | name, |
| 671 | optimization, |
| 672 | miss); |
| 673 | } else { |
| 674 | CompileRegular(masm, |
| 675 | object, |
| 676 | receiver, |
| 677 | scratch1, |
| 678 | scratch2, |
| 679 | scratch3, |
| 680 | name, |
| 681 | holder, |
| 682 | miss); |
| 683 | return masm->isolate()->heap()->undefined_value(); |
| 684 | } |
| 685 | } |
| 686 | |
| 687 | private: |
| 688 | MaybeObject* CompileCacheable(MacroAssembler* masm, |
| 689 | JSObject* object, |
| 690 | Register receiver, |
| 691 | Register scratch1, |
| 692 | Register scratch2, |
| 693 | Register scratch3, |
| 694 | JSObject* interceptor_holder, |
| 695 | LookupResult* lookup, |
| 696 | String* name, |
| 697 | const CallOptimization& optimization, |
| 698 | Label* miss_label) { |
| 699 | ASSERT(optimization.is_constant_call()); |
| 700 | ASSERT(!lookup->holder()->IsGlobalObject()); |
| 701 | |
| 702 | Counters* counters = masm->isolate()->counters(); |
| 703 | |
| 704 | int depth1 = kInvalidProtoDepth; |
| 705 | int depth2 = kInvalidProtoDepth; |
| 706 | bool can_do_fast_api_call = false; |
| 707 | if (optimization.is_simple_api_call() && |
| 708 | !lookup->holder()->IsGlobalObject()) { |
| 709 | depth1 = |
| 710 | optimization.GetPrototypeDepthOfExpectedType(object, |
| 711 | interceptor_holder); |
| 712 | if (depth1 == kInvalidProtoDepth) { |
| 713 | depth2 = |
| 714 | optimization.GetPrototypeDepthOfExpectedType(interceptor_holder, |
| 715 | lookup->holder()); |
| 716 | } |
| 717 | can_do_fast_api_call = (depth1 != kInvalidProtoDepth) || |
| 718 | (depth2 != kInvalidProtoDepth); |
| 719 | } |
| 720 | |
| 721 | __ IncrementCounter(counters->call_const_interceptor(), 1, |
| 722 | scratch1, scratch2); |
| 723 | |
| 724 | if (can_do_fast_api_call) { |
| 725 | __ IncrementCounter(counters->call_const_interceptor_fast_api(), 1, |
| 726 | scratch1, scratch2); |
| 727 | ReserveSpaceForFastApiCall(masm, scratch1); |
| 728 | } |
| 729 | |
| 730 | // Check that the maps from receiver to interceptor's holder |
| 731 | // haven't changed and thus we can invoke interceptor. |
| 732 | Label miss_cleanup; |
| 733 | Label* miss = can_do_fast_api_call ? &miss_cleanup : miss_label; |
| 734 | Register holder = |
| 735 | stub_compiler_->CheckPrototypes(object, receiver, |
| 736 | interceptor_holder, scratch1, |
| 737 | scratch2, scratch3, name, depth1, miss); |
| 738 | |
| 739 | // Invoke an interceptor and if it provides a value, |
| 740 | // branch to |regular_invoke|. |
| 741 | Label regular_invoke; |
| 742 | LoadWithInterceptor(masm, receiver, holder, interceptor_holder, scratch2, |
| 743 | ®ular_invoke); |
| 744 | |
| 745 | // Interceptor returned nothing for this property. Try to use cached |
| 746 | // constant function. |
| 747 | |
| 748 | // Check that the maps from interceptor's holder to constant function's |
| 749 | // holder haven't changed and thus we can use cached constant function. |
| 750 | if (interceptor_holder != lookup->holder()) { |
| 751 | stub_compiler_->CheckPrototypes(interceptor_holder, receiver, |
| 752 | lookup->holder(), scratch1, |
| 753 | scratch2, scratch3, name, depth2, miss); |
| 754 | } else { |
| 755 | // CheckPrototypes has a side effect of fetching a 'holder' |
| 756 | // for API (object which is instanceof for the signature). It's |
| 757 | // safe to omit it here, as if present, it should be fetched |
| 758 | // by the previous CheckPrototypes. |
| 759 | ASSERT(depth2 == kInvalidProtoDepth); |
| 760 | } |
| 761 | |
| 762 | // Invoke function. |
| 763 | if (can_do_fast_api_call) { |
| 764 | MaybeObject* result = GenerateFastApiDirectCall(masm, |
| 765 | optimization, |
| 766 | arguments_.immediate()); |
| 767 | if (result->IsFailure()) return result; |
| 768 | } else { |
erik.corry@gmail.com | d6076d9 | 2011-06-06 09:39:18 +0000 | [diff] [blame] | 769 | CallKind call_kind = CallICBase::Contextual::decode(extra_ic_state_) |
| 770 | ? CALL_AS_FUNCTION |
| 771 | : CALL_AS_METHOD; |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 772 | __ InvokeFunction(optimization.constant_function(), arguments_, |
erik.corry@gmail.com | d6076d9 | 2011-06-06 09:39:18 +0000 | [diff] [blame] | 773 | JUMP_FUNCTION, call_kind); |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 774 | } |
| 775 | |
| 776 | // Deferred code for fast API call case---clean preallocated space. |
| 777 | if (can_do_fast_api_call) { |
| 778 | __ bind(&miss_cleanup); |
| 779 | FreeSpaceForFastApiCall(masm); |
| 780 | __ Branch(miss_label); |
| 781 | } |
| 782 | |
| 783 | // Invoke a regular function. |
| 784 | __ bind(®ular_invoke); |
| 785 | if (can_do_fast_api_call) { |
| 786 | FreeSpaceForFastApiCall(masm); |
| 787 | } |
| 788 | |
| 789 | return masm->isolate()->heap()->undefined_value(); |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 790 | } |
| 791 | |
| 792 | void CompileRegular(MacroAssembler* masm, |
| 793 | JSObject* object, |
| 794 | Register receiver, |
| 795 | Register scratch1, |
| 796 | Register scratch2, |
| 797 | Register scratch3, |
| 798 | String* name, |
| 799 | JSObject* interceptor_holder, |
| 800 | Label* miss_label) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 801 | Register holder = |
| 802 | stub_compiler_->CheckPrototypes(object, receiver, interceptor_holder, |
| 803 | scratch1, scratch2, scratch3, name, |
| 804 | miss_label); |
| 805 | |
| 806 | // Call a runtime function to load the interceptor property. |
| 807 | __ EnterInternalFrame(); |
| 808 | // Save the name_ register across the call. |
| 809 | __ push(name_); |
| 810 | |
| 811 | PushInterceptorArguments(masm, |
| 812 | receiver, |
| 813 | holder, |
| 814 | name_, |
| 815 | interceptor_holder); |
| 816 | |
| 817 | __ CallExternalReference( |
| 818 | ExternalReference( |
| 819 | IC_Utility(IC::kLoadPropertyWithInterceptorForCall), |
| 820 | masm->isolate()), |
| 821 | 5); |
| 822 | |
| 823 | // Restore the name_ register. |
| 824 | __ pop(name_); |
| 825 | __ LeaveInternalFrame(); |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 826 | } |
| 827 | |
| 828 | void LoadWithInterceptor(MacroAssembler* masm, |
| 829 | Register receiver, |
| 830 | Register holder, |
| 831 | JSObject* holder_obj, |
| 832 | Register scratch, |
| 833 | Label* interceptor_succeeded) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 834 | __ EnterInternalFrame(); |
| 835 | |
| 836 | __ Push(holder, name_); |
| 837 | |
| 838 | CompileCallLoadPropertyWithInterceptor(masm, |
| 839 | receiver, |
| 840 | holder, |
| 841 | name_, |
| 842 | holder_obj); |
| 843 | |
| 844 | __ pop(name_); // Restore the name. |
| 845 | __ pop(receiver); // Restore the holder. |
| 846 | __ LeaveInternalFrame(); |
| 847 | |
| 848 | // If interceptor returns no-result sentinel, call the constant function. |
| 849 | __ LoadRoot(scratch, Heap::kNoInterceptorResultSentinelRootIndex); |
| 850 | __ Branch(interceptor_succeeded, ne, v0, Operand(scratch)); |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 851 | } |
| 852 | |
| 853 | StubCompiler* stub_compiler_; |
| 854 | const ParameterCount& arguments_; |
| 855 | Register name_; |
erik.corry@gmail.com | d6076d9 | 2011-06-06 09:39:18 +0000 | [diff] [blame] | 856 | Code::ExtraICState extra_ic_state_; |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 857 | }; |
| 858 | |
| 859 | |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 860 | |
| 861 | // Generate code to check that a global property cell is empty. Create |
| 862 | // the property cell at compilation time if no cell exists for the |
| 863 | // property. |
| 864 | MUST_USE_RESULT static MaybeObject* GenerateCheckPropertyCell( |
| 865 | MacroAssembler* masm, |
| 866 | GlobalObject* global, |
| 867 | String* name, |
| 868 | Register scratch, |
| 869 | Label* miss) { |
| 870 | Object* probe; |
| 871 | { MaybeObject* maybe_probe = global->EnsurePropertyCell(name); |
| 872 | if (!maybe_probe->ToObject(&probe)) return maybe_probe; |
| 873 | } |
| 874 | JSGlobalPropertyCell* cell = JSGlobalPropertyCell::cast(probe); |
| 875 | ASSERT(cell->value()->IsTheHole()); |
| 876 | __ li(scratch, Operand(Handle<Object>(cell))); |
| 877 | __ lw(scratch, |
| 878 | FieldMemOperand(scratch, JSGlobalPropertyCell::kValueOffset)); |
| 879 | __ LoadRoot(at, Heap::kTheHoleValueRootIndex); |
| 880 | __ Branch(miss, ne, scratch, Operand(at)); |
| 881 | return cell; |
| 882 | } |
| 883 | |
| 884 | |
| 885 | // Calls GenerateCheckPropertyCell for each global object in the prototype chain |
| 886 | // from object to (but not including) holder. |
| 887 | MUST_USE_RESULT static MaybeObject* GenerateCheckPropertyCells( |
| 888 | MacroAssembler* masm, |
| 889 | JSObject* object, |
| 890 | JSObject* holder, |
| 891 | String* name, |
| 892 | Register scratch, |
| 893 | Label* miss) { |
| 894 | JSObject* current = object; |
| 895 | while (current != holder) { |
| 896 | if (current->IsGlobalObject()) { |
| 897 | // Returns a cell or a failure. |
| 898 | MaybeObject* result = GenerateCheckPropertyCell( |
| 899 | masm, |
| 900 | GlobalObject::cast(current), |
| 901 | name, |
| 902 | scratch, |
| 903 | miss); |
| 904 | if (result->IsFailure()) return result; |
| 905 | } |
| 906 | ASSERT(current->IsJSObject()); |
| 907 | current = JSObject::cast(current->GetPrototype()); |
| 908 | } |
| 909 | return NULL; |
| 910 | } |
| 911 | |
| 912 | |
| 913 | // Convert and store int passed in register ival to IEEE 754 single precision |
| 914 | // floating point value at memory location (dst + 4 * wordoffset) |
| 915 | // If FPU is available use it for conversion. |
| 916 | static void StoreIntAsFloat(MacroAssembler* masm, |
| 917 | Register dst, |
| 918 | Register wordoffset, |
| 919 | Register ival, |
| 920 | Register fval, |
| 921 | Register scratch1, |
| 922 | Register scratch2) { |
| 923 | if (CpuFeatures::IsSupported(FPU)) { |
| 924 | CpuFeatures::Scope scope(FPU); |
| 925 | __ mtc1(ival, f0); |
| 926 | __ cvt_s_w(f0, f0); |
| 927 | __ sll(scratch1, wordoffset, 2); |
| 928 | __ addu(scratch1, dst, scratch1); |
| 929 | __ swc1(f0, MemOperand(scratch1, 0)); |
| 930 | } else { |
| 931 | // FPU is not available, do manual conversions. |
| 932 | |
| 933 | Label not_special, done; |
| 934 | // Move sign bit from source to destination. This works because the sign |
| 935 | // bit in the exponent word of the double has the same position and polarity |
| 936 | // as the 2's complement sign bit in a Smi. |
| 937 | ASSERT(kBinary32SignMask == 0x80000000u); |
| 938 | |
| 939 | __ And(fval, ival, Operand(kBinary32SignMask)); |
| 940 | // Negate value if it is negative. |
| 941 | __ subu(scratch1, zero_reg, ival); |
| 942 | __ movn(ival, scratch1, fval); |
| 943 | |
| 944 | // We have -1, 0 or 1, which we treat specially. Register ival contains |
| 945 | // absolute value: it is either equal to 1 (special case of -1 and 1), |
| 946 | // greater than 1 (not a special case) or less than 1 (special case of 0). |
| 947 | __ Branch(¬_special, gt, ival, Operand(1)); |
| 948 | |
| 949 | // For 1 or -1 we need to or in the 0 exponent (biased). |
| 950 | static const uint32_t exponent_word_for_1 = |
| 951 | kBinary32ExponentBias << kBinary32ExponentShift; |
| 952 | |
| 953 | __ Xor(scratch1, ival, Operand(1)); |
| 954 | __ li(scratch2, exponent_word_for_1); |
| 955 | __ or_(scratch2, fval, scratch2); |
| 956 | __ movz(fval, scratch2, scratch1); // Only if ival is equal to 1. |
| 957 | __ Branch(&done); |
| 958 | |
| 959 | __ bind(¬_special); |
| 960 | // Count leading zeros. |
| 961 | // Gets the wrong answer for 0, but we already checked for that case above. |
| 962 | Register zeros = scratch2; |
| 963 | __ clz(zeros, ival); |
| 964 | |
| 965 | // Compute exponent and or it into the exponent register. |
| 966 | __ li(scratch1, (kBitsPerInt - 1) + kBinary32ExponentBias); |
| 967 | __ subu(scratch1, scratch1, zeros); |
| 968 | |
| 969 | __ sll(scratch1, scratch1, kBinary32ExponentShift); |
| 970 | __ or_(fval, fval, scratch1); |
| 971 | |
| 972 | // Shift up the source chopping the top bit off. |
| 973 | __ Addu(zeros, zeros, Operand(1)); |
| 974 | // This wouldn't work for 1 and -1 as the shift would be 32 which means 0. |
| 975 | __ sllv(ival, ival, zeros); |
| 976 | // And the top (top 20 bits). |
| 977 | __ srl(scratch1, ival, kBitsPerInt - kBinary32MantissaBits); |
| 978 | __ or_(fval, fval, scratch1); |
| 979 | |
| 980 | __ bind(&done); |
| 981 | |
| 982 | __ sll(scratch1, wordoffset, 2); |
| 983 | __ addu(scratch1, dst, scratch1); |
| 984 | __ sw(fval, MemOperand(scratch1, 0)); |
| 985 | } |
| 986 | } |
| 987 | |
| 988 | |
| 989 | // Convert unsigned integer with specified number of leading zeroes in binary |
| 990 | // representation to IEEE 754 double. |
| 991 | // Integer to convert is passed in register hiword. |
| 992 | // Resulting double is returned in registers hiword:loword. |
| 993 | // This functions does not work correctly for 0. |
| 994 | static void GenerateUInt2Double(MacroAssembler* masm, |
| 995 | Register hiword, |
| 996 | Register loword, |
| 997 | Register scratch, |
| 998 | int leading_zeroes) { |
| 999 | const int meaningful_bits = kBitsPerInt - leading_zeroes - 1; |
| 1000 | const int biased_exponent = HeapNumber::kExponentBias + meaningful_bits; |
| 1001 | |
| 1002 | const int mantissa_shift_for_hi_word = |
| 1003 | meaningful_bits - HeapNumber::kMantissaBitsInTopWord; |
| 1004 | |
| 1005 | const int mantissa_shift_for_lo_word = |
| 1006 | kBitsPerInt - mantissa_shift_for_hi_word; |
| 1007 | |
| 1008 | __ li(scratch, biased_exponent << HeapNumber::kExponentShift); |
| 1009 | if (mantissa_shift_for_hi_word > 0) { |
| 1010 | __ sll(loword, hiword, mantissa_shift_for_lo_word); |
| 1011 | __ srl(hiword, hiword, mantissa_shift_for_hi_word); |
| 1012 | __ or_(hiword, scratch, hiword); |
| 1013 | } else { |
| 1014 | __ mov(loword, zero_reg); |
| 1015 | __ sll(hiword, hiword, mantissa_shift_for_hi_word); |
| 1016 | __ or_(hiword, scratch, hiword); |
| 1017 | } |
| 1018 | |
| 1019 | // If least significant bit of biased exponent was not 1 it was corrupted |
| 1020 | // by most significant bit of mantissa so we should fix that. |
| 1021 | if (!(biased_exponent & 1)) { |
| 1022 | __ li(scratch, 1 << HeapNumber::kExponentShift); |
| 1023 | __ nor(scratch, scratch, scratch); |
| 1024 | __ and_(hiword, hiword, scratch); |
| 1025 | } |
| 1026 | } |
| 1027 | |
| 1028 | |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1029 | #undef __ |
| 1030 | #define __ ACCESS_MASM(masm()) |
| 1031 | |
| 1032 | |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 1033 | Register StubCompiler::CheckPrototypes(JSObject* object, |
| 1034 | Register object_reg, |
| 1035 | JSObject* holder, |
| 1036 | Register holder_reg, |
| 1037 | Register scratch1, |
| 1038 | Register scratch2, |
| 1039 | String* name, |
| 1040 | int save_at_depth, |
| 1041 | Label* miss) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 1042 | // Make sure there's no overlap between holder and object registers. |
| 1043 | ASSERT(!scratch1.is(object_reg) && !scratch1.is(holder_reg)); |
| 1044 | ASSERT(!scratch2.is(object_reg) && !scratch2.is(holder_reg) |
| 1045 | && !scratch2.is(scratch1)); |
| 1046 | |
| 1047 | // Keep track of the current object in register reg. |
| 1048 | Register reg = object_reg; |
| 1049 | int depth = 0; |
| 1050 | |
| 1051 | if (save_at_depth == depth) { |
| 1052 | __ sw(reg, MemOperand(sp)); |
| 1053 | } |
| 1054 | |
| 1055 | // Check the maps in the prototype chain. |
| 1056 | // Traverse the prototype chain from the object and do map checks. |
| 1057 | JSObject* current = object; |
| 1058 | while (current != holder) { |
| 1059 | depth++; |
| 1060 | |
| 1061 | // Only global objects and objects that do not require access |
| 1062 | // checks are allowed in stubs. |
| 1063 | ASSERT(current->IsJSGlobalProxy() || !current->IsAccessCheckNeeded()); |
| 1064 | |
| 1065 | ASSERT(current->GetPrototype()->IsJSObject()); |
| 1066 | JSObject* prototype = JSObject::cast(current->GetPrototype()); |
| 1067 | if (!current->HasFastProperties() && |
| 1068 | !current->IsJSGlobalObject() && |
| 1069 | !current->IsJSGlobalProxy()) { |
| 1070 | if (!name->IsSymbol()) { |
| 1071 | MaybeObject* maybe_lookup_result = heap()->LookupSymbol(name); |
| 1072 | Object* lookup_result = NULL; // Initialization to please compiler. |
| 1073 | if (!maybe_lookup_result->ToObject(&lookup_result)) { |
| 1074 | set_failure(Failure::cast(maybe_lookup_result)); |
| 1075 | return reg; |
| 1076 | } |
| 1077 | name = String::cast(lookup_result); |
| 1078 | } |
| 1079 | ASSERT(current->property_dictionary()->FindEntry(name) == |
| 1080 | StringDictionary::kNotFound); |
| 1081 | |
| 1082 | MaybeObject* negative_lookup = GenerateDictionaryNegativeLookup(masm(), |
| 1083 | miss, |
| 1084 | reg, |
| 1085 | name, |
| 1086 | scratch1, |
| 1087 | scratch2); |
| 1088 | if (negative_lookup->IsFailure()) { |
| 1089 | set_failure(Failure::cast(negative_lookup)); |
| 1090 | return reg; |
| 1091 | } |
| 1092 | |
| 1093 | __ lw(scratch1, FieldMemOperand(reg, HeapObject::kMapOffset)); |
| 1094 | reg = holder_reg; // From now the object is in holder_reg. |
| 1095 | __ lw(reg, FieldMemOperand(scratch1, Map::kPrototypeOffset)); |
| 1096 | } else if (heap()->InNewSpace(prototype)) { |
| 1097 | // Get the map of the current object. |
| 1098 | __ lw(scratch1, FieldMemOperand(reg, HeapObject::kMapOffset)); |
| 1099 | |
| 1100 | // Branch on the result of the map check. |
| 1101 | __ Branch(miss, ne, scratch1, Operand(Handle<Map>(current->map()))); |
| 1102 | |
| 1103 | // Check access rights to the global object. This has to happen |
| 1104 | // after the map check so that we know that the object is |
| 1105 | // actually a global object. |
| 1106 | if (current->IsJSGlobalProxy()) { |
| 1107 | __ CheckAccessGlobalProxy(reg, scratch1, miss); |
| 1108 | // Restore scratch register to be the map of the object. In the |
| 1109 | // new space case below, we load the prototype from the map in |
| 1110 | // the scratch register. |
| 1111 | __ lw(scratch1, FieldMemOperand(reg, HeapObject::kMapOffset)); |
| 1112 | } |
| 1113 | |
| 1114 | reg = holder_reg; // From now the object is in holder_reg. |
| 1115 | // The prototype is in new space; we cannot store a reference |
| 1116 | // to it in the code. Load it from the map. |
| 1117 | __ lw(reg, FieldMemOperand(scratch1, Map::kPrototypeOffset)); |
| 1118 | } else { |
| 1119 | // Check the map of the current object. |
| 1120 | __ lw(scratch1, FieldMemOperand(reg, HeapObject::kMapOffset)); |
| 1121 | // Branch on the result of the map check. |
| 1122 | __ Branch(miss, ne, scratch1, Operand(Handle<Map>(current->map()))); |
| 1123 | // Check access rights to the global object. This has to happen |
| 1124 | // after the map check so that we know that the object is |
| 1125 | // actually a global object. |
| 1126 | if (current->IsJSGlobalProxy()) { |
| 1127 | __ CheckAccessGlobalProxy(reg, scratch1, miss); |
| 1128 | } |
| 1129 | // The prototype is in old space; load it directly. |
| 1130 | reg = holder_reg; // From now the object is in holder_reg. |
| 1131 | __ li(reg, Operand(Handle<JSObject>(prototype))); |
| 1132 | } |
| 1133 | |
| 1134 | if (save_at_depth == depth) { |
| 1135 | __ sw(reg, MemOperand(sp)); |
| 1136 | } |
| 1137 | |
| 1138 | // Go to the next object in the prototype chain. |
| 1139 | current = prototype; |
| 1140 | } |
| 1141 | |
| 1142 | // Check the holder map. |
| 1143 | __ lw(scratch1, FieldMemOperand(reg, HeapObject::kMapOffset)); |
| 1144 | __ Branch(miss, ne, scratch1, Operand(Handle<Map>(current->map()))); |
| 1145 | |
| 1146 | // Log the check depth. |
| 1147 | LOG(masm()->isolate(), IntEvent("check-maps-depth", depth + 1)); |
| 1148 | // Perform security check for access to the global object. |
| 1149 | ASSERT(holder->IsJSGlobalProxy() || !holder->IsAccessCheckNeeded()); |
| 1150 | if (holder->IsJSGlobalProxy()) { |
| 1151 | __ CheckAccessGlobalProxy(reg, scratch1, miss); |
| 1152 | }; |
| 1153 | |
| 1154 | // If we've skipped any global objects, it's not enough to verify |
| 1155 | // that their maps haven't changed. We also need to check that the |
| 1156 | // property cell for the property is still empty. |
| 1157 | |
| 1158 | MaybeObject* result = GenerateCheckPropertyCells(masm(), |
| 1159 | object, |
| 1160 | holder, |
| 1161 | name, |
| 1162 | scratch1, |
| 1163 | miss); |
| 1164 | if (result->IsFailure()) set_failure(Failure::cast(result)); |
| 1165 | |
| 1166 | // Return the register containing the holder. |
| 1167 | return reg; |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 1168 | } |
| 1169 | |
| 1170 | |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1171 | void StubCompiler::GenerateLoadField(JSObject* object, |
| 1172 | JSObject* holder, |
| 1173 | Register receiver, |
| 1174 | Register scratch1, |
| 1175 | Register scratch2, |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 1176 | Register scratch3, |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1177 | int index, |
| 1178 | String* name, |
| 1179 | Label* miss) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 1180 | // Check that the receiver isn't a smi. |
| 1181 | __ And(scratch1, receiver, Operand(kSmiTagMask)); |
| 1182 | __ Branch(miss, eq, scratch1, Operand(zero_reg)); |
| 1183 | |
| 1184 | // Check that the maps haven't changed. |
| 1185 | Register reg = |
| 1186 | CheckPrototypes(object, receiver, holder, scratch1, scratch2, scratch3, |
| 1187 | name, miss); |
| 1188 | GenerateFastPropertyLoad(masm(), v0, reg, holder, index); |
| 1189 | __ Ret(); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1190 | } |
| 1191 | |
| 1192 | |
| 1193 | void StubCompiler::GenerateLoadConstant(JSObject* object, |
| 1194 | JSObject* holder, |
| 1195 | Register receiver, |
| 1196 | Register scratch1, |
| 1197 | Register scratch2, |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 1198 | Register scratch3, |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1199 | Object* value, |
| 1200 | String* name, |
| 1201 | Label* miss) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 1202 | // Check that the receiver isn't a smi. |
| 1203 | __ JumpIfSmi(receiver, miss, scratch1); |
| 1204 | |
| 1205 | // Check that the maps haven't changed. |
| 1206 | Register reg = |
| 1207 | CheckPrototypes(object, receiver, holder, |
| 1208 | scratch1, scratch2, scratch3, name, miss); |
| 1209 | |
| 1210 | // Return the constant value. |
| 1211 | __ li(v0, Operand(Handle<Object>(value))); |
| 1212 | __ Ret(); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1213 | } |
| 1214 | |
| 1215 | |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 1216 | MaybeObject* StubCompiler::GenerateLoadCallback(JSObject* object, |
| 1217 | JSObject* holder, |
| 1218 | Register receiver, |
| 1219 | Register name_reg, |
| 1220 | Register scratch1, |
| 1221 | Register scratch2, |
| 1222 | Register scratch3, |
| 1223 | AccessorInfo* callback, |
| 1224 | String* name, |
| 1225 | Label* miss) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 1226 | // Check that the receiver isn't a smi. |
| 1227 | __ JumpIfSmi(receiver, miss, scratch1); |
| 1228 | |
| 1229 | // Check that the maps haven't changed. |
| 1230 | Register reg = |
| 1231 | CheckPrototypes(object, receiver, holder, scratch1, scratch2, scratch3, |
| 1232 | name, miss); |
| 1233 | |
| 1234 | // Build AccessorInfo::args_ list on the stack and push property name below |
| 1235 | // the exit frame to make GC aware of them and store pointers to them. |
| 1236 | __ push(receiver); |
| 1237 | __ mov(scratch2, sp); // scratch2 = AccessorInfo::args_ |
| 1238 | Handle<AccessorInfo> callback_handle(callback); |
| 1239 | if (heap()->InNewSpace(callback_handle->data())) { |
| 1240 | __ li(scratch3, callback_handle); |
| 1241 | __ lw(scratch3, FieldMemOperand(scratch3, AccessorInfo::kDataOffset)); |
| 1242 | } else { |
| 1243 | __ li(scratch3, Handle<Object>(callback_handle->data())); |
| 1244 | } |
| 1245 | __ Push(reg, scratch3, name_reg); |
| 1246 | __ mov(a2, scratch2); // Saved in case scratch2 == a1. |
| 1247 | __ mov(a1, sp); // a1 (first argument - see note below) = Handle<String> |
| 1248 | |
| 1249 | Address getter_address = v8::ToCData<Address>(callback->getter()); |
| 1250 | ApiFunction fun(getter_address); |
| 1251 | |
| 1252 | // NOTE: the O32 abi requires a0 to hold a special pointer when returning a |
| 1253 | // struct from the function (which is currently the case). This means we pass |
| 1254 | // the arguments in a1-a2 instead of a0-a1. TryCallApiFunctionAndReturn |
| 1255 | // will handle setting up a0. |
| 1256 | |
| 1257 | const int kApiStackSpace = 1; |
| 1258 | |
| 1259 | __ EnterExitFrame(false, kApiStackSpace); |
| 1260 | // Create AccessorInfo instance on the stack above the exit frame with |
| 1261 | // scratch2 (internal::Object **args_) as the data. |
| 1262 | __ sw(a2, MemOperand(sp, kPointerSize)); |
| 1263 | // a2 (second argument - see note above) = AccessorInfo& |
| 1264 | __ Addu(a2, sp, kPointerSize); |
| 1265 | |
| 1266 | // Emitting a stub call may try to allocate (if the code is not |
| 1267 | // already generated). Do not allow the assembler to perform a |
| 1268 | // garbage collection but instead return the allocation failure |
| 1269 | // object. |
| 1270 | ExternalReference ref = |
| 1271 | ExternalReference(&fun, |
| 1272 | ExternalReference::DIRECT_GETTER_CALL, |
| 1273 | masm()->isolate()); |
| 1274 | // 4 args - will be freed later by LeaveExitFrame. |
| 1275 | return masm()->TryCallApiFunctionAndReturn(ref, 4); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1276 | } |
| 1277 | |
| 1278 | |
| 1279 | void StubCompiler::GenerateLoadInterceptor(JSObject* object, |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 1280 | JSObject* interceptor_holder, |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1281 | LookupResult* lookup, |
| 1282 | Register receiver, |
| 1283 | Register name_reg, |
| 1284 | Register scratch1, |
| 1285 | Register scratch2, |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 1286 | Register scratch3, |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1287 | String* name, |
| 1288 | Label* miss) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 1289 | ASSERT(interceptor_holder->HasNamedInterceptor()); |
| 1290 | ASSERT(!interceptor_holder->GetNamedInterceptor()->getter()->IsUndefined()); |
| 1291 | |
| 1292 | // Check that the receiver isn't a smi. |
| 1293 | __ JumpIfSmi(receiver, miss); |
| 1294 | |
| 1295 | // So far the most popular follow ups for interceptor loads are FIELD |
| 1296 | // and CALLBACKS, so inline only them, other cases may be added |
| 1297 | // later. |
| 1298 | bool compile_followup_inline = false; |
| 1299 | if (lookup->IsProperty() && lookup->IsCacheable()) { |
| 1300 | if (lookup->type() == FIELD) { |
| 1301 | compile_followup_inline = true; |
| 1302 | } else if (lookup->type() == CALLBACKS && |
| 1303 | lookup->GetCallbackObject()->IsAccessorInfo() && |
| 1304 | AccessorInfo::cast(lookup->GetCallbackObject())->getter() != NULL) { |
| 1305 | compile_followup_inline = true; |
| 1306 | } |
| 1307 | } |
| 1308 | |
| 1309 | if (compile_followup_inline) { |
| 1310 | // Compile the interceptor call, followed by inline code to load the |
| 1311 | // property from further up the prototype chain if the call fails. |
| 1312 | // Check that the maps haven't changed. |
| 1313 | Register holder_reg = CheckPrototypes(object, receiver, interceptor_holder, |
| 1314 | scratch1, scratch2, scratch3, |
| 1315 | name, miss); |
| 1316 | ASSERT(holder_reg.is(receiver) || holder_reg.is(scratch1)); |
| 1317 | |
| 1318 | // Save necessary data before invoking an interceptor. |
| 1319 | // Requires a frame to make GC aware of pushed pointers. |
| 1320 | __ EnterInternalFrame(); |
| 1321 | |
| 1322 | if (lookup->type() == CALLBACKS && !receiver.is(holder_reg)) { |
| 1323 | // CALLBACKS case needs a receiver to be passed into C++ callback. |
| 1324 | __ Push(receiver, holder_reg, name_reg); |
| 1325 | } else { |
| 1326 | __ Push(holder_reg, name_reg); |
| 1327 | } |
| 1328 | |
| 1329 | // Invoke an interceptor. Note: map checks from receiver to |
| 1330 | // interceptor's holder has been compiled before (see a caller |
| 1331 | // of this method). |
| 1332 | CompileCallLoadPropertyWithInterceptor(masm(), |
| 1333 | receiver, |
| 1334 | holder_reg, |
| 1335 | name_reg, |
| 1336 | interceptor_holder); |
| 1337 | |
| 1338 | // Check if interceptor provided a value for property. If it's |
| 1339 | // the case, return immediately. |
| 1340 | Label interceptor_failed; |
| 1341 | __ LoadRoot(scratch1, Heap::kNoInterceptorResultSentinelRootIndex); |
| 1342 | __ Branch(&interceptor_failed, eq, v0, Operand(scratch1)); |
| 1343 | __ LeaveInternalFrame(); |
| 1344 | __ Ret(); |
| 1345 | |
| 1346 | __ bind(&interceptor_failed); |
| 1347 | __ pop(name_reg); |
| 1348 | __ pop(holder_reg); |
| 1349 | if (lookup->type() == CALLBACKS && !receiver.is(holder_reg)) { |
| 1350 | __ pop(receiver); |
| 1351 | } |
| 1352 | |
| 1353 | __ LeaveInternalFrame(); |
| 1354 | |
| 1355 | // Check that the maps from interceptor's holder to lookup's holder |
| 1356 | // haven't changed. And load lookup's holder into |holder| register. |
| 1357 | if (interceptor_holder != lookup->holder()) { |
| 1358 | holder_reg = CheckPrototypes(interceptor_holder, |
| 1359 | holder_reg, |
| 1360 | lookup->holder(), |
| 1361 | scratch1, |
| 1362 | scratch2, |
| 1363 | scratch3, |
| 1364 | name, |
| 1365 | miss); |
| 1366 | } |
| 1367 | |
| 1368 | if (lookup->type() == FIELD) { |
| 1369 | // We found FIELD property in prototype chain of interceptor's holder. |
| 1370 | // Retrieve a field from field's holder. |
| 1371 | GenerateFastPropertyLoad(masm(), v0, holder_reg, |
| 1372 | lookup->holder(), lookup->GetFieldIndex()); |
| 1373 | __ Ret(); |
| 1374 | } else { |
| 1375 | // We found CALLBACKS property in prototype chain of interceptor's |
| 1376 | // holder. |
| 1377 | ASSERT(lookup->type() == CALLBACKS); |
| 1378 | ASSERT(lookup->GetCallbackObject()->IsAccessorInfo()); |
| 1379 | AccessorInfo* callback = AccessorInfo::cast(lookup->GetCallbackObject()); |
| 1380 | ASSERT(callback != NULL); |
| 1381 | ASSERT(callback->getter() != NULL); |
| 1382 | |
| 1383 | // Tail call to runtime. |
| 1384 | // Important invariant in CALLBACKS case: the code above must be |
| 1385 | // structured to never clobber |receiver| register. |
| 1386 | __ li(scratch2, Handle<AccessorInfo>(callback)); |
| 1387 | // holder_reg is either receiver or scratch1. |
| 1388 | if (!receiver.is(holder_reg)) { |
| 1389 | ASSERT(scratch1.is(holder_reg)); |
| 1390 | __ Push(receiver, holder_reg); |
| 1391 | __ lw(scratch3, |
| 1392 | FieldMemOperand(scratch2, AccessorInfo::kDataOffset)); |
| 1393 | __ Push(scratch3, scratch2, name_reg); |
| 1394 | } else { |
| 1395 | __ push(receiver); |
| 1396 | __ lw(scratch3, |
| 1397 | FieldMemOperand(scratch2, AccessorInfo::kDataOffset)); |
| 1398 | __ Push(holder_reg, scratch3, scratch2, name_reg); |
| 1399 | } |
| 1400 | |
| 1401 | ExternalReference ref = |
| 1402 | ExternalReference(IC_Utility(IC::kLoadCallbackProperty), |
| 1403 | masm()->isolate()); |
| 1404 | __ TailCallExternalReference(ref, 5, 1); |
| 1405 | } |
| 1406 | } else { // !compile_followup_inline |
| 1407 | // Call the runtime system to load the interceptor. |
| 1408 | // Check that the maps haven't changed. |
| 1409 | Register holder_reg = CheckPrototypes(object, receiver, interceptor_holder, |
| 1410 | scratch1, scratch2, scratch3, |
| 1411 | name, miss); |
| 1412 | PushInterceptorArguments(masm(), receiver, holder_reg, |
| 1413 | name_reg, interceptor_holder); |
| 1414 | |
| 1415 | ExternalReference ref = ExternalReference( |
| 1416 | IC_Utility(IC::kLoadPropertyWithInterceptorForLoad), masm()->isolate()); |
| 1417 | __ TailCallExternalReference(ref, 5, 1); |
| 1418 | } |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1419 | } |
| 1420 | |
| 1421 | |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 1422 | void CallStubCompiler::GenerateNameCheck(String* name, Label* miss) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 1423 | if (kind_ == Code::KEYED_CALL_IC) { |
| 1424 | __ Branch(miss, ne, a2, Operand(Handle<String>(name))); |
| 1425 | } |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1426 | } |
| 1427 | |
| 1428 | |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 1429 | void CallStubCompiler::GenerateGlobalReceiverCheck(JSObject* object, |
| 1430 | JSObject* holder, |
| 1431 | String* name, |
| 1432 | Label* miss) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 1433 | ASSERT(holder->IsGlobalObject()); |
| 1434 | |
| 1435 | // Get the number of arguments. |
| 1436 | const int argc = arguments().immediate(); |
| 1437 | |
| 1438 | // Get the receiver from the stack. |
| 1439 | __ lw(a0, MemOperand(sp, argc * kPointerSize)); |
| 1440 | |
| 1441 | // If the object is the holder then we know that it's a global |
| 1442 | // object which can only happen for contextual calls. In this case, |
| 1443 | // the receiver cannot be a smi. |
| 1444 | if (object != holder) { |
| 1445 | __ JumpIfSmi(a0, miss); |
| 1446 | } |
| 1447 | |
| 1448 | // Check that the maps haven't changed. |
| 1449 | CheckPrototypes(object, a0, holder, a3, a1, t0, name, miss); |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1450 | } |
| 1451 | |
| 1452 | |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 1453 | void CallStubCompiler::GenerateLoadFunctionFromCell(JSGlobalPropertyCell* cell, |
| 1454 | JSFunction* function, |
| 1455 | Label* miss) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 1456 | // Get the value from the cell. |
| 1457 | __ li(a3, Operand(Handle<JSGlobalPropertyCell>(cell))); |
| 1458 | __ lw(a1, FieldMemOperand(a3, JSGlobalPropertyCell::kValueOffset)); |
| 1459 | |
| 1460 | // Check that the cell contains the same function. |
| 1461 | if (heap()->InNewSpace(function)) { |
| 1462 | // We can't embed a pointer to a function in new space so we have |
| 1463 | // to verify that the shared function info is unchanged. This has |
| 1464 | // the nice side effect that multiple closures based on the same |
| 1465 | // function can all use this call IC. Before we load through the |
| 1466 | // function, we have to verify that it still is a function. |
| 1467 | __ JumpIfSmi(a1, miss); |
| 1468 | __ GetObjectType(a1, a3, a3); |
| 1469 | __ Branch(miss, ne, a3, Operand(JS_FUNCTION_TYPE)); |
| 1470 | |
| 1471 | // Check the shared function info. Make sure it hasn't changed. |
| 1472 | __ li(a3, Handle<SharedFunctionInfo>(function->shared())); |
| 1473 | __ lw(t0, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset)); |
| 1474 | __ Branch(miss, ne, t0, Operand(a3)); |
| 1475 | } else { |
| 1476 | __ Branch(miss, ne, a1, Operand(Handle<JSFunction>(function))); |
| 1477 | } |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 1478 | } |
| 1479 | |
| 1480 | |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 1481 | MaybeObject* CallStubCompiler::GenerateMissBranch() { |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 1482 | MaybeObject* maybe_obj = |
| 1483 | isolate()->stub_cache()->ComputeCallMiss(arguments().immediate(), |
| 1484 | kind_, |
| 1485 | extra_ic_state_); |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 1486 | Object* obj; |
| 1487 | if (!maybe_obj->ToObject(&obj)) return maybe_obj; |
| 1488 | __ Jump(Handle<Code>(Code::cast(obj)), RelocInfo::CODE_TARGET); |
| 1489 | return obj; |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1490 | } |
| 1491 | |
| 1492 | |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 1493 | MaybeObject* CallStubCompiler::CompileCallField(JSObject* object, |
| 1494 | JSObject* holder, |
| 1495 | int index, |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1496 | String* name) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 1497 | // ----------- S t a t e ------------- |
| 1498 | // -- a2 : name |
| 1499 | // -- ra : return address |
| 1500 | // ----------------------------------- |
| 1501 | Label miss; |
| 1502 | |
| 1503 | GenerateNameCheck(name, &miss); |
| 1504 | |
| 1505 | const int argc = arguments().immediate(); |
| 1506 | |
| 1507 | // Get the receiver of the function from the stack into a0. |
| 1508 | __ lw(a0, MemOperand(sp, argc * kPointerSize)); |
| 1509 | // Check that the receiver isn't a smi. |
| 1510 | __ JumpIfSmi(a0, &miss, t0); |
| 1511 | |
| 1512 | // Do the right check and compute the holder register. |
| 1513 | Register reg = CheckPrototypes(object, a0, holder, a1, a3, t0, name, &miss); |
| 1514 | GenerateFastPropertyLoad(masm(), a1, reg, holder, index); |
| 1515 | |
erik.corry@gmail.com | d6076d9 | 2011-06-06 09:39:18 +0000 | [diff] [blame] | 1516 | GenerateCallFunction(masm(), object, arguments(), &miss, extra_ic_state_); |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 1517 | |
| 1518 | // Handle call cache miss. |
| 1519 | __ bind(&miss); |
| 1520 | MaybeObject* maybe_result = GenerateMissBranch(); |
| 1521 | if (maybe_result->IsFailure()) return maybe_result; |
| 1522 | |
| 1523 | // Return the generated code. |
| 1524 | return GetCode(FIELD, name); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1525 | } |
| 1526 | |
| 1527 | |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 1528 | MaybeObject* CallStubCompiler::CompileArrayPushCall(Object* object, |
| 1529 | JSObject* holder, |
| 1530 | JSGlobalPropertyCell* cell, |
| 1531 | JSFunction* function, |
| 1532 | String* name) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 1533 | // ----------- S t a t e ------------- |
| 1534 | // -- a2 : name |
| 1535 | // -- ra : return address |
| 1536 | // -- sp[(argc - n - 1) * 4] : arg[n] (zero-based) |
| 1537 | // -- ... |
| 1538 | // -- sp[argc * 4] : receiver |
| 1539 | // ----------------------------------- |
| 1540 | |
| 1541 | // If object is not an array, bail out to regular call. |
| 1542 | if (!object->IsJSArray() || cell != NULL) return heap()->undefined_value(); |
| 1543 | |
| 1544 | Label miss; |
| 1545 | |
| 1546 | GenerateNameCheck(name, &miss); |
| 1547 | |
| 1548 | Register receiver = a1; |
| 1549 | |
| 1550 | // Get the receiver from the stack. |
| 1551 | const int argc = arguments().immediate(); |
| 1552 | __ lw(receiver, MemOperand(sp, argc * kPointerSize)); |
| 1553 | |
| 1554 | // Check that the receiver isn't a smi. |
| 1555 | __ JumpIfSmi(receiver, &miss); |
| 1556 | |
| 1557 | // Check that the maps haven't changed. |
| 1558 | CheckPrototypes(JSObject::cast(object), receiver, |
| 1559 | holder, a3, v0, t0, name, &miss); |
| 1560 | |
| 1561 | if (argc == 0) { |
| 1562 | // Nothing to do, just return the length. |
| 1563 | __ lw(v0, FieldMemOperand(receiver, JSArray::kLengthOffset)); |
| 1564 | __ Drop(argc + 1); |
| 1565 | __ Ret(); |
| 1566 | } else { |
| 1567 | Label call_builtin; |
| 1568 | |
| 1569 | Register elements = a3; |
| 1570 | Register end_elements = t1; |
| 1571 | |
| 1572 | // Get the elements array of the object. |
| 1573 | __ lw(elements, FieldMemOperand(receiver, JSArray::kElementsOffset)); |
| 1574 | |
| 1575 | // Check that the elements are in fast mode and writable. |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 1576 | __ CheckMap(elements, |
| 1577 | v0, |
| 1578 | Heap::kFixedArrayMapRootIndex, |
| 1579 | &call_builtin, |
| 1580 | DONT_DO_SMI_CHECK); |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 1581 | |
| 1582 | if (argc == 1) { // Otherwise fall through to call the builtin. |
| 1583 | Label exit, with_write_barrier, attempt_to_grow_elements; |
| 1584 | |
| 1585 | // Get the array's length into v0 and calculate new length. |
| 1586 | __ lw(v0, FieldMemOperand(receiver, JSArray::kLengthOffset)); |
| 1587 | STATIC_ASSERT(kSmiTagSize == 1); |
| 1588 | STATIC_ASSERT(kSmiTag == 0); |
| 1589 | __ Addu(v0, v0, Operand(Smi::FromInt(argc))); |
| 1590 | |
| 1591 | // Get the element's length. |
| 1592 | __ lw(t0, FieldMemOperand(elements, FixedArray::kLengthOffset)); |
| 1593 | |
| 1594 | // Check if we could survive without allocation. |
| 1595 | __ Branch(&attempt_to_grow_elements, gt, v0, Operand(t0)); |
| 1596 | |
| 1597 | // Save new length. |
| 1598 | __ sw(v0, FieldMemOperand(receiver, JSArray::kLengthOffset)); |
| 1599 | |
| 1600 | // Push the element. |
| 1601 | __ lw(t0, MemOperand(sp, (argc - 1) * kPointerSize)); |
| 1602 | // We may need a register containing the address end_elements below, |
| 1603 | // so write back the value in end_elements. |
| 1604 | __ sll(end_elements, v0, kPointerSizeLog2 - kSmiTagSize); |
| 1605 | __ Addu(end_elements, elements, end_elements); |
| 1606 | const int kEndElementsOffset = |
| 1607 | FixedArray::kHeaderSize - kHeapObjectTag - argc * kPointerSize; |
| 1608 | __ sw(t0, MemOperand(end_elements, kEndElementsOffset)); |
| 1609 | __ Addu(end_elements, end_elements, kPointerSize); |
| 1610 | |
| 1611 | // Check for a smi. |
| 1612 | __ JumpIfNotSmi(t0, &with_write_barrier); |
| 1613 | __ bind(&exit); |
| 1614 | __ Drop(argc + 1); |
| 1615 | __ Ret(); |
| 1616 | |
| 1617 | __ bind(&with_write_barrier); |
| 1618 | __ InNewSpace(elements, t0, eq, &exit); |
| 1619 | __ RecordWriteHelper(elements, end_elements, t0); |
| 1620 | __ Drop(argc + 1); |
| 1621 | __ Ret(); |
| 1622 | |
| 1623 | __ bind(&attempt_to_grow_elements); |
| 1624 | // v0: array's length + 1. |
| 1625 | // t0: elements' length. |
| 1626 | |
| 1627 | if (!FLAG_inline_new) { |
| 1628 | __ Branch(&call_builtin); |
| 1629 | } |
| 1630 | |
| 1631 | ExternalReference new_space_allocation_top = |
| 1632 | ExternalReference::new_space_allocation_top_address( |
| 1633 | masm()->isolate()); |
| 1634 | ExternalReference new_space_allocation_limit = |
| 1635 | ExternalReference::new_space_allocation_limit_address( |
| 1636 | masm()->isolate()); |
| 1637 | |
| 1638 | const int kAllocationDelta = 4; |
| 1639 | // Load top and check if it is the end of elements. |
| 1640 | __ sll(end_elements, v0, kPointerSizeLog2 - kSmiTagSize); |
| 1641 | __ Addu(end_elements, elements, end_elements); |
| 1642 | __ Addu(end_elements, end_elements, Operand(kEndElementsOffset)); |
| 1643 | __ li(t3, Operand(new_space_allocation_top)); |
| 1644 | __ lw(t2, MemOperand(t3)); |
| 1645 | __ Branch(&call_builtin, ne, end_elements, Operand(t2)); |
| 1646 | |
| 1647 | __ li(t5, Operand(new_space_allocation_limit)); |
| 1648 | __ lw(t5, MemOperand(t5)); |
| 1649 | __ Addu(t2, t2, Operand(kAllocationDelta * kPointerSize)); |
| 1650 | __ Branch(&call_builtin, hi, t2, Operand(t5)); |
| 1651 | |
| 1652 | // We fit and could grow elements. |
| 1653 | // Update new_space_allocation_top. |
| 1654 | __ sw(t2, MemOperand(t3)); |
| 1655 | // Push the argument. |
| 1656 | __ lw(t2, MemOperand(sp, (argc - 1) * kPointerSize)); |
| 1657 | __ sw(t2, MemOperand(end_elements)); |
| 1658 | // Fill the rest with holes. |
| 1659 | __ LoadRoot(t2, Heap::kTheHoleValueRootIndex); |
| 1660 | for (int i = 1; i < kAllocationDelta; i++) { |
| 1661 | __ sw(t2, MemOperand(end_elements, i * kPointerSize)); |
| 1662 | } |
| 1663 | |
| 1664 | // Update elements' and array's sizes. |
| 1665 | __ sw(v0, FieldMemOperand(receiver, JSArray::kLengthOffset)); |
| 1666 | __ Addu(t0, t0, Operand(Smi::FromInt(kAllocationDelta))); |
| 1667 | __ sw(t0, FieldMemOperand(elements, FixedArray::kLengthOffset)); |
| 1668 | |
| 1669 | // Elements are in new space, so write barrier is not required. |
| 1670 | __ Drop(argc + 1); |
| 1671 | __ Ret(); |
| 1672 | } |
| 1673 | __ bind(&call_builtin); |
| 1674 | __ TailCallExternalReference(ExternalReference(Builtins::c_ArrayPush, |
| 1675 | masm()->isolate()), |
| 1676 | argc + 1, |
| 1677 | 1); |
| 1678 | } |
| 1679 | |
| 1680 | // Handle call cache miss. |
| 1681 | __ bind(&miss); |
| 1682 | MaybeObject* maybe_result = GenerateMissBranch(); |
| 1683 | if (maybe_result->IsFailure()) return maybe_result; |
| 1684 | |
| 1685 | // Return the generated code. |
| 1686 | return GetCode(function); |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 1687 | } |
| 1688 | |
| 1689 | |
| 1690 | MaybeObject* CallStubCompiler::CompileArrayPopCall(Object* object, |
| 1691 | JSObject* holder, |
| 1692 | JSGlobalPropertyCell* cell, |
| 1693 | JSFunction* function, |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1694 | String* name) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 1695 | // ----------- S t a t e ------------- |
| 1696 | // -- a2 : name |
| 1697 | // -- ra : return address |
| 1698 | // -- sp[(argc - n - 1) * 4] : arg[n] (zero-based) |
| 1699 | // -- ... |
| 1700 | // -- sp[argc * 4] : receiver |
| 1701 | // ----------------------------------- |
| 1702 | |
| 1703 | // If object is not an array, bail out to regular call. |
| 1704 | if (!object->IsJSArray() || cell != NULL) return heap()->undefined_value(); |
| 1705 | |
| 1706 | Label miss, return_undefined, call_builtin; |
| 1707 | |
| 1708 | Register receiver = a1; |
| 1709 | Register elements = a3; |
| 1710 | |
| 1711 | GenerateNameCheck(name, &miss); |
| 1712 | |
| 1713 | // Get the receiver from the stack. |
| 1714 | const int argc = arguments().immediate(); |
| 1715 | __ lw(receiver, MemOperand(sp, argc * kPointerSize)); |
| 1716 | |
| 1717 | // Check that the receiver isn't a smi. |
| 1718 | __ JumpIfSmi(receiver, &miss); |
| 1719 | |
| 1720 | // Check that the maps haven't changed. |
| 1721 | CheckPrototypes(JSObject::cast(object), |
| 1722 | receiver, holder, elements, t0, v0, name, &miss); |
| 1723 | |
| 1724 | // Get the elements array of the object. |
| 1725 | __ lw(elements, FieldMemOperand(receiver, JSArray::kElementsOffset)); |
| 1726 | |
| 1727 | // Check that the elements are in fast mode and writable. |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 1728 | __ CheckMap(elements, |
| 1729 | v0, |
| 1730 | Heap::kFixedArrayMapRootIndex, |
| 1731 | &call_builtin, |
| 1732 | DONT_DO_SMI_CHECK); |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 1733 | |
| 1734 | // Get the array's length into t0 and calculate new length. |
| 1735 | __ lw(t0, FieldMemOperand(receiver, JSArray::kLengthOffset)); |
| 1736 | __ Subu(t0, t0, Operand(Smi::FromInt(1))); |
| 1737 | __ Branch(&return_undefined, lt, t0, Operand(zero_reg)); |
| 1738 | |
| 1739 | // Get the last element. |
| 1740 | __ LoadRoot(t2, Heap::kTheHoleValueRootIndex); |
| 1741 | STATIC_ASSERT(kSmiTagSize == 1); |
| 1742 | STATIC_ASSERT(kSmiTag == 0); |
| 1743 | // We can't address the last element in one operation. Compute the more |
| 1744 | // expensive shift first, and use an offset later on. |
| 1745 | __ sll(t1, t0, kPointerSizeLog2 - kSmiTagSize); |
| 1746 | __ Addu(elements, elements, t1); |
| 1747 | __ lw(v0, MemOperand(elements, FixedArray::kHeaderSize - kHeapObjectTag)); |
| 1748 | __ Branch(&call_builtin, eq, v0, Operand(t2)); |
| 1749 | |
| 1750 | // Set the array's length. |
| 1751 | __ sw(t0, FieldMemOperand(receiver, JSArray::kLengthOffset)); |
| 1752 | |
| 1753 | // Fill with the hole. |
| 1754 | __ sw(t2, MemOperand(elements, FixedArray::kHeaderSize - kHeapObjectTag)); |
| 1755 | __ Drop(argc + 1); |
| 1756 | __ Ret(); |
| 1757 | |
| 1758 | __ bind(&return_undefined); |
| 1759 | __ LoadRoot(v0, Heap::kUndefinedValueRootIndex); |
| 1760 | __ Drop(argc + 1); |
| 1761 | __ Ret(); |
| 1762 | |
| 1763 | __ bind(&call_builtin); |
| 1764 | __ TailCallExternalReference(ExternalReference(Builtins::c_ArrayPop, |
| 1765 | masm()->isolate()), |
| 1766 | argc + 1, |
| 1767 | 1); |
| 1768 | |
| 1769 | // Handle call cache miss. |
| 1770 | __ bind(&miss); |
| 1771 | MaybeObject* maybe_result = GenerateMissBranch(); |
| 1772 | if (maybe_result->IsFailure()) return maybe_result; |
| 1773 | |
| 1774 | // Return the generated code. |
| 1775 | return GetCode(function); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1776 | } |
| 1777 | |
| 1778 | |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 1779 | MaybeObject* CallStubCompiler::CompileStringCharCodeAtCall( |
| 1780 | Object* object, |
| 1781 | JSObject* holder, |
| 1782 | JSGlobalPropertyCell* cell, |
| 1783 | JSFunction* function, |
| 1784 | String* name) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 1785 | // ----------- S t a t e ------------- |
| 1786 | // -- a2 : function name |
| 1787 | // -- ra : return address |
| 1788 | // -- sp[(argc - n - 1) * 4] : arg[n] (zero-based) |
| 1789 | // -- ... |
| 1790 | // -- sp[argc * 4] : receiver |
| 1791 | // ----------------------------------- |
| 1792 | |
| 1793 | // If object is not a string, bail out to regular call. |
| 1794 | if (!object->IsString() || cell != NULL) return heap()->undefined_value(); |
| 1795 | |
| 1796 | const int argc = arguments().immediate(); |
| 1797 | |
| 1798 | Label miss; |
| 1799 | Label name_miss; |
| 1800 | Label index_out_of_range; |
| 1801 | |
| 1802 | Label* index_out_of_range_label = &index_out_of_range; |
| 1803 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 1804 | if (kind_ == Code::CALL_IC && |
| 1805 | (CallICBase::StringStubState::decode(extra_ic_state_) == |
| 1806 | DEFAULT_STRING_STUB)) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 1807 | index_out_of_range_label = &miss; |
| 1808 | } |
| 1809 | |
| 1810 | GenerateNameCheck(name, &name_miss); |
| 1811 | |
| 1812 | // Check that the maps starting from the prototype haven't changed. |
| 1813 | GenerateDirectLoadGlobalFunctionPrototype(masm(), |
| 1814 | Context::STRING_FUNCTION_INDEX, |
| 1815 | v0, |
| 1816 | &miss); |
| 1817 | ASSERT(object != holder); |
| 1818 | CheckPrototypes(JSObject::cast(object->GetPrototype()), v0, holder, |
| 1819 | a1, a3, t0, name, &miss); |
| 1820 | |
| 1821 | Register receiver = a1; |
| 1822 | Register index = t1; |
| 1823 | Register scratch = a3; |
| 1824 | Register result = v0; |
| 1825 | __ lw(receiver, MemOperand(sp, argc * kPointerSize)); |
| 1826 | if (argc > 0) { |
| 1827 | __ lw(index, MemOperand(sp, (argc - 1) * kPointerSize)); |
| 1828 | } else { |
| 1829 | __ LoadRoot(index, Heap::kUndefinedValueRootIndex); |
| 1830 | } |
| 1831 | |
| 1832 | StringCharCodeAtGenerator char_code_at_generator(receiver, |
| 1833 | index, |
| 1834 | scratch, |
| 1835 | result, |
| 1836 | &miss, // When not a string. |
| 1837 | &miss, // When not a number. |
| 1838 | index_out_of_range_label, |
| 1839 | STRING_INDEX_IS_NUMBER); |
| 1840 | char_code_at_generator.GenerateFast(masm()); |
| 1841 | __ Drop(argc + 1); |
| 1842 | __ Ret(); |
| 1843 | |
| 1844 | StubRuntimeCallHelper call_helper; |
| 1845 | char_code_at_generator.GenerateSlow(masm(), call_helper); |
| 1846 | |
| 1847 | if (index_out_of_range.is_linked()) { |
| 1848 | __ bind(&index_out_of_range); |
| 1849 | __ LoadRoot(v0, Heap::kNanValueRootIndex); |
| 1850 | __ Drop(argc + 1); |
| 1851 | __ Ret(); |
| 1852 | } |
| 1853 | |
| 1854 | __ bind(&miss); |
| 1855 | // Restore function name in a2. |
| 1856 | __ li(a2, Handle<String>(name)); |
| 1857 | __ bind(&name_miss); |
| 1858 | MaybeObject* maybe_result = GenerateMissBranch(); |
| 1859 | if (maybe_result->IsFailure()) return maybe_result; |
| 1860 | |
| 1861 | // Return the generated code. |
| 1862 | return GetCode(function); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1863 | } |
| 1864 | |
| 1865 | |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 1866 | MaybeObject* CallStubCompiler::CompileStringCharAtCall( |
| 1867 | Object* object, |
| 1868 | JSObject* holder, |
| 1869 | JSGlobalPropertyCell* cell, |
| 1870 | JSFunction* function, |
| 1871 | String* name) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 1872 | // ----------- S t a t e ------------- |
| 1873 | // -- a2 : function name |
| 1874 | // -- ra : return address |
| 1875 | // -- sp[(argc - n - 1) * 4] : arg[n] (zero-based) |
| 1876 | // -- ... |
| 1877 | // -- sp[argc * 4] : receiver |
| 1878 | // ----------------------------------- |
| 1879 | |
| 1880 | // If object is not a string, bail out to regular call. |
| 1881 | if (!object->IsString() || cell != NULL) return heap()->undefined_value(); |
| 1882 | |
| 1883 | const int argc = arguments().immediate(); |
| 1884 | |
| 1885 | Label miss; |
| 1886 | Label name_miss; |
| 1887 | Label index_out_of_range; |
| 1888 | Label* index_out_of_range_label = &index_out_of_range; |
| 1889 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 1890 | if (kind_ == Code::CALL_IC && |
| 1891 | (CallICBase::StringStubState::decode(extra_ic_state_) == |
| 1892 | DEFAULT_STRING_STUB)) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 1893 | index_out_of_range_label = &miss; |
| 1894 | } |
| 1895 | |
| 1896 | GenerateNameCheck(name, &name_miss); |
| 1897 | |
| 1898 | // Check that the maps starting from the prototype haven't changed. |
| 1899 | GenerateDirectLoadGlobalFunctionPrototype(masm(), |
| 1900 | Context::STRING_FUNCTION_INDEX, |
| 1901 | v0, |
| 1902 | &miss); |
| 1903 | ASSERT(object != holder); |
| 1904 | CheckPrototypes(JSObject::cast(object->GetPrototype()), v0, holder, |
| 1905 | a1, a3, t0, name, &miss); |
| 1906 | |
| 1907 | Register receiver = v0; |
| 1908 | Register index = t1; |
| 1909 | Register scratch1 = a1; |
| 1910 | Register scratch2 = a3; |
| 1911 | Register result = v0; |
| 1912 | __ lw(receiver, MemOperand(sp, argc * kPointerSize)); |
| 1913 | if (argc > 0) { |
| 1914 | __ lw(index, MemOperand(sp, (argc - 1) * kPointerSize)); |
| 1915 | } else { |
| 1916 | __ LoadRoot(index, Heap::kUndefinedValueRootIndex); |
| 1917 | } |
| 1918 | |
| 1919 | StringCharAtGenerator char_at_generator(receiver, |
| 1920 | index, |
| 1921 | scratch1, |
| 1922 | scratch2, |
| 1923 | result, |
| 1924 | &miss, // When not a string. |
| 1925 | &miss, // When not a number. |
| 1926 | index_out_of_range_label, |
| 1927 | STRING_INDEX_IS_NUMBER); |
| 1928 | char_at_generator.GenerateFast(masm()); |
| 1929 | __ Drop(argc + 1); |
| 1930 | __ Ret(); |
| 1931 | |
| 1932 | StubRuntimeCallHelper call_helper; |
| 1933 | char_at_generator.GenerateSlow(masm(), call_helper); |
| 1934 | |
| 1935 | if (index_out_of_range.is_linked()) { |
| 1936 | __ bind(&index_out_of_range); |
| 1937 | __ LoadRoot(v0, Heap::kEmptyStringRootIndex); |
| 1938 | __ Drop(argc + 1); |
| 1939 | __ Ret(); |
| 1940 | } |
| 1941 | |
| 1942 | __ bind(&miss); |
| 1943 | // Restore function name in a2. |
| 1944 | __ li(a2, Handle<String>(name)); |
| 1945 | __ bind(&name_miss); |
| 1946 | MaybeObject* maybe_result = GenerateMissBranch(); |
| 1947 | if (maybe_result->IsFailure()) return maybe_result; |
| 1948 | |
| 1949 | // Return the generated code. |
| 1950 | return GetCode(function); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1951 | } |
| 1952 | |
| 1953 | |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 1954 | MaybeObject* CallStubCompiler::CompileStringFromCharCodeCall( |
| 1955 | Object* object, |
| 1956 | JSObject* holder, |
| 1957 | JSGlobalPropertyCell* cell, |
| 1958 | JSFunction* function, |
| 1959 | String* name) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 1960 | // ----------- S t a t e ------------- |
| 1961 | // -- a2 : function name |
| 1962 | // -- ra : return address |
| 1963 | // -- sp[(argc - n - 1) * 4] : arg[n] (zero-based) |
| 1964 | // -- ... |
| 1965 | // -- sp[argc * 4] : receiver |
| 1966 | // ----------------------------------- |
| 1967 | |
| 1968 | const int argc = arguments().immediate(); |
| 1969 | |
| 1970 | // If the object is not a JSObject or we got an unexpected number of |
| 1971 | // arguments, bail out to the regular call. |
| 1972 | if (!object->IsJSObject() || argc != 1) return heap()->undefined_value(); |
| 1973 | |
| 1974 | Label miss; |
| 1975 | GenerateNameCheck(name, &miss); |
| 1976 | |
| 1977 | if (cell == NULL) { |
| 1978 | __ lw(a1, MemOperand(sp, 1 * kPointerSize)); |
| 1979 | |
| 1980 | STATIC_ASSERT(kSmiTag == 0); |
| 1981 | __ JumpIfSmi(a1, &miss); |
| 1982 | |
| 1983 | CheckPrototypes(JSObject::cast(object), a1, holder, v0, a3, t0, name, |
| 1984 | &miss); |
| 1985 | } else { |
| 1986 | ASSERT(cell->value() == function); |
| 1987 | GenerateGlobalReceiverCheck(JSObject::cast(object), holder, name, &miss); |
| 1988 | GenerateLoadFunctionFromCell(cell, function, &miss); |
| 1989 | } |
| 1990 | |
| 1991 | // Load the char code argument. |
| 1992 | Register code = a1; |
| 1993 | __ lw(code, MemOperand(sp, 0 * kPointerSize)); |
| 1994 | |
| 1995 | // Check the code is a smi. |
| 1996 | Label slow; |
| 1997 | STATIC_ASSERT(kSmiTag == 0); |
| 1998 | __ JumpIfNotSmi(code, &slow); |
| 1999 | |
| 2000 | // Convert the smi code to uint16. |
| 2001 | __ And(code, code, Operand(Smi::FromInt(0xffff))); |
| 2002 | |
| 2003 | StringCharFromCodeGenerator char_from_code_generator(code, v0); |
| 2004 | char_from_code_generator.GenerateFast(masm()); |
| 2005 | __ Drop(argc + 1); |
| 2006 | __ Ret(); |
| 2007 | |
| 2008 | StubRuntimeCallHelper call_helper; |
| 2009 | char_from_code_generator.GenerateSlow(masm(), call_helper); |
| 2010 | |
| 2011 | // Tail call the full function. We do not have to patch the receiver |
| 2012 | // because the function makes no use of it. |
| 2013 | __ bind(&slow); |
erik.corry@gmail.com | d6076d9 | 2011-06-06 09:39:18 +0000 | [diff] [blame] | 2014 | __ InvokeFunction(function, arguments(), JUMP_FUNCTION, CALL_AS_METHOD); |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 2015 | |
| 2016 | __ bind(&miss); |
| 2017 | // a2: function name. |
| 2018 | MaybeObject* maybe_result = GenerateMissBranch(); |
| 2019 | if (maybe_result->IsFailure()) return maybe_result; |
| 2020 | |
| 2021 | // Return the generated code. |
| 2022 | return (cell == NULL) ? GetCode(function) : GetCode(NORMAL, name); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 2023 | } |
| 2024 | |
| 2025 | |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 2026 | MaybeObject* CallStubCompiler::CompileMathFloorCall(Object* object, |
| 2027 | JSObject* holder, |
| 2028 | JSGlobalPropertyCell* cell, |
| 2029 | JSFunction* function, |
| 2030 | String* name) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 2031 | // ----------- S t a t e ------------- |
| 2032 | // -- a2 : function name |
| 2033 | // -- ra : return address |
| 2034 | // -- sp[(argc - n - 1) * 4] : arg[n] (zero-based) |
| 2035 | // -- ... |
| 2036 | // -- sp[argc * 4] : receiver |
| 2037 | // ----------------------------------- |
| 2038 | |
| 2039 | if (!CpuFeatures::IsSupported(FPU)) |
| 2040 | return heap()->undefined_value(); |
| 2041 | CpuFeatures::Scope scope_fpu(FPU); |
| 2042 | |
| 2043 | const int argc = arguments().immediate(); |
| 2044 | |
| 2045 | // If the object is not a JSObject or we got an unexpected number of |
| 2046 | // arguments, bail out to the regular call. |
| 2047 | if (!object->IsJSObject() || argc != 1) return heap()->undefined_value(); |
| 2048 | |
| 2049 | Label miss, slow; |
| 2050 | GenerateNameCheck(name, &miss); |
| 2051 | |
| 2052 | if (cell == NULL) { |
| 2053 | __ lw(a1, MemOperand(sp, 1 * kPointerSize)); |
| 2054 | |
| 2055 | STATIC_ASSERT(kSmiTag == 0); |
| 2056 | __ JumpIfSmi(a1, &miss); |
| 2057 | |
| 2058 | CheckPrototypes(JSObject::cast(object), a1, holder, a0, a3, t0, name, |
| 2059 | &miss); |
| 2060 | } else { |
| 2061 | ASSERT(cell->value() == function); |
| 2062 | GenerateGlobalReceiverCheck(JSObject::cast(object), holder, name, &miss); |
| 2063 | GenerateLoadFunctionFromCell(cell, function, &miss); |
| 2064 | } |
| 2065 | |
| 2066 | // Load the (only) argument into v0. |
| 2067 | __ lw(v0, MemOperand(sp, 0 * kPointerSize)); |
| 2068 | |
| 2069 | // If the argument is a smi, just return. |
| 2070 | STATIC_ASSERT(kSmiTag == 0); |
| 2071 | __ And(t0, v0, Operand(kSmiTagMask)); |
| 2072 | __ Drop(argc + 1, eq, t0, Operand(zero_reg)); |
| 2073 | __ Ret(eq, t0, Operand(zero_reg)); |
| 2074 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2075 | __ CheckMap(v0, a1, Heap::kHeapNumberMapRootIndex, &slow, DONT_DO_SMI_CHECK); |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 2076 | |
| 2077 | Label wont_fit_smi, no_fpu_error, restore_fcsr_and_return; |
| 2078 | |
| 2079 | // If fpu is enabled, we use the floor instruction. |
| 2080 | |
| 2081 | // Load the HeapNumber value. |
| 2082 | __ ldc1(f0, FieldMemOperand(v0, HeapNumber::kValueOffset)); |
| 2083 | |
| 2084 | // Backup FCSR. |
| 2085 | __ cfc1(a3, FCSR); |
| 2086 | // Clearing FCSR clears the exception mask with no side-effects. |
| 2087 | __ ctc1(zero_reg, FCSR); |
| 2088 | // Convert the argument to an integer. |
| 2089 | __ floor_w_d(f0, f0); |
| 2090 | |
| 2091 | // Start checking for special cases. |
| 2092 | // Get the argument exponent and clear the sign bit. |
| 2093 | __ lw(t1, FieldMemOperand(v0, HeapNumber::kValueOffset + kPointerSize)); |
| 2094 | __ And(t2, t1, Operand(~HeapNumber::kSignMask)); |
| 2095 | __ srl(t2, t2, HeapNumber::kMantissaBitsInTopWord); |
| 2096 | |
| 2097 | // Retrieve FCSR and check for fpu errors. |
| 2098 | __ cfc1(t5, FCSR); |
erik.corry@gmail.com | d6076d9 | 2011-06-06 09:39:18 +0000 | [diff] [blame] | 2099 | __ And(t5, t5, Operand(kFCSRExceptionFlagMask)); |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 2100 | __ Branch(&no_fpu_error, eq, t5, Operand(zero_reg)); |
| 2101 | |
| 2102 | // Check for NaN, Infinity, and -Infinity. |
| 2103 | // They are invariant through a Math.Floor call, so just |
| 2104 | // return the original argument. |
| 2105 | __ Subu(t3, t2, Operand(HeapNumber::kExponentMask |
| 2106 | >> HeapNumber::kMantissaBitsInTopWord)); |
| 2107 | __ Branch(&restore_fcsr_and_return, eq, t3, Operand(zero_reg)); |
| 2108 | // We had an overflow or underflow in the conversion. Check if we |
| 2109 | // have a big exponent. |
| 2110 | // If greater or equal, the argument is already round and in v0. |
| 2111 | __ Branch(&restore_fcsr_and_return, ge, t3, |
| 2112 | Operand(HeapNumber::kMantissaBits)); |
| 2113 | __ Branch(&wont_fit_smi); |
| 2114 | |
| 2115 | __ bind(&no_fpu_error); |
| 2116 | // Move the result back to v0. |
| 2117 | __ mfc1(v0, f0); |
| 2118 | // Check if the result fits into a smi. |
| 2119 | __ Addu(a1, v0, Operand(0x40000000)); |
| 2120 | __ Branch(&wont_fit_smi, lt, a1, Operand(zero_reg)); |
| 2121 | // Tag the result. |
| 2122 | STATIC_ASSERT(kSmiTag == 0); |
| 2123 | __ sll(v0, v0, kSmiTagSize); |
| 2124 | |
| 2125 | // Check for -0. |
| 2126 | __ Branch(&restore_fcsr_and_return, ne, v0, Operand(zero_reg)); |
| 2127 | // t1 already holds the HeapNumber exponent. |
| 2128 | __ And(t0, t1, Operand(HeapNumber::kSignMask)); |
| 2129 | // If our HeapNumber is negative it was -0, so load its address and return. |
| 2130 | // Else v0 is loaded with 0, so we can also just return. |
| 2131 | __ Branch(&restore_fcsr_and_return, eq, t0, Operand(zero_reg)); |
| 2132 | __ lw(v0, MemOperand(sp, 0 * kPointerSize)); |
| 2133 | |
| 2134 | __ bind(&restore_fcsr_and_return); |
| 2135 | // Restore FCSR and return. |
| 2136 | __ ctc1(a3, FCSR); |
| 2137 | |
| 2138 | __ Drop(argc + 1); |
| 2139 | __ Ret(); |
| 2140 | |
| 2141 | __ bind(&wont_fit_smi); |
| 2142 | // Restore FCSR and fall to slow case. |
| 2143 | __ ctc1(a3, FCSR); |
| 2144 | |
| 2145 | __ bind(&slow); |
| 2146 | // Tail call the full function. We do not have to patch the receiver |
| 2147 | // because the function makes no use of it. |
erik.corry@gmail.com | d6076d9 | 2011-06-06 09:39:18 +0000 | [diff] [blame] | 2148 | __ InvokeFunction(function, arguments(), JUMP_FUNCTION, CALL_AS_METHOD); |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 2149 | |
| 2150 | __ bind(&miss); |
| 2151 | // a2: function name. |
| 2152 | MaybeObject* obj = GenerateMissBranch(); |
| 2153 | if (obj->IsFailure()) return obj; |
| 2154 | |
| 2155 | // Return the generated code. |
| 2156 | return (cell == NULL) ? GetCode(function) : GetCode(NORMAL, name); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 2157 | } |
| 2158 | |
| 2159 | |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 2160 | MaybeObject* CallStubCompiler::CompileMathAbsCall(Object* object, |
| 2161 | JSObject* holder, |
| 2162 | JSGlobalPropertyCell* cell, |
| 2163 | JSFunction* function, |
| 2164 | String* name) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 2165 | // ----------- S t a t e ------------- |
| 2166 | // -- a2 : function name |
| 2167 | // -- ra : return address |
| 2168 | // -- sp[(argc - n - 1) * 4] : arg[n] (zero-based) |
| 2169 | // -- ... |
| 2170 | // -- sp[argc * 4] : receiver |
| 2171 | // ----------------------------------- |
| 2172 | |
| 2173 | const int argc = arguments().immediate(); |
| 2174 | |
| 2175 | // If the object is not a JSObject or we got an unexpected number of |
| 2176 | // arguments, bail out to the regular call. |
| 2177 | if (!object->IsJSObject() || argc != 1) return heap()->undefined_value(); |
| 2178 | |
| 2179 | Label miss; |
| 2180 | GenerateNameCheck(name, &miss); |
| 2181 | |
| 2182 | if (cell == NULL) { |
| 2183 | __ lw(a1, MemOperand(sp, 1 * kPointerSize)); |
| 2184 | |
| 2185 | STATIC_ASSERT(kSmiTag == 0); |
| 2186 | __ JumpIfSmi(a1, &miss); |
| 2187 | |
| 2188 | CheckPrototypes(JSObject::cast(object), a1, holder, v0, a3, t0, name, |
| 2189 | &miss); |
| 2190 | } else { |
| 2191 | ASSERT(cell->value() == function); |
| 2192 | GenerateGlobalReceiverCheck(JSObject::cast(object), holder, name, &miss); |
| 2193 | GenerateLoadFunctionFromCell(cell, function, &miss); |
| 2194 | } |
| 2195 | |
| 2196 | // Load the (only) argument into v0. |
| 2197 | __ lw(v0, MemOperand(sp, 0 * kPointerSize)); |
| 2198 | |
| 2199 | // Check if the argument is a smi. |
| 2200 | Label not_smi; |
| 2201 | STATIC_ASSERT(kSmiTag == 0); |
| 2202 | __ JumpIfNotSmi(v0, ¬_smi); |
| 2203 | |
| 2204 | // Do bitwise not or do nothing depending on the sign of the |
| 2205 | // argument. |
| 2206 | __ sra(t0, v0, kBitsPerInt - 1); |
| 2207 | __ Xor(a1, v0, t0); |
| 2208 | |
| 2209 | // Add 1 or do nothing depending on the sign of the argument. |
| 2210 | __ Subu(v0, a1, t0); |
| 2211 | |
| 2212 | // If the result is still negative, go to the slow case. |
| 2213 | // This only happens for the most negative smi. |
| 2214 | Label slow; |
| 2215 | __ Branch(&slow, lt, v0, Operand(zero_reg)); |
| 2216 | |
| 2217 | // Smi case done. |
| 2218 | __ Drop(argc + 1); |
| 2219 | __ Ret(); |
| 2220 | |
| 2221 | // Check if the argument is a heap number and load its exponent and |
| 2222 | // sign. |
| 2223 | __ bind(¬_smi); |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2224 | __ CheckMap(v0, a1, Heap::kHeapNumberMapRootIndex, &slow, DONT_DO_SMI_CHECK); |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 2225 | __ lw(a1, FieldMemOperand(v0, HeapNumber::kExponentOffset)); |
| 2226 | |
| 2227 | // Check the sign of the argument. If the argument is positive, |
| 2228 | // just return it. |
| 2229 | Label negative_sign; |
| 2230 | __ And(t0, a1, Operand(HeapNumber::kSignMask)); |
| 2231 | __ Branch(&negative_sign, ne, t0, Operand(zero_reg)); |
| 2232 | __ Drop(argc + 1); |
| 2233 | __ Ret(); |
| 2234 | |
| 2235 | // If the argument is negative, clear the sign, and return a new |
| 2236 | // number. |
| 2237 | __ bind(&negative_sign); |
| 2238 | __ Xor(a1, a1, Operand(HeapNumber::kSignMask)); |
| 2239 | __ lw(a3, FieldMemOperand(v0, HeapNumber::kMantissaOffset)); |
| 2240 | __ LoadRoot(t2, Heap::kHeapNumberMapRootIndex); |
| 2241 | __ AllocateHeapNumber(v0, t0, t1, t2, &slow); |
| 2242 | __ sw(a1, FieldMemOperand(v0, HeapNumber::kExponentOffset)); |
| 2243 | __ sw(a3, FieldMemOperand(v0, HeapNumber::kMantissaOffset)); |
| 2244 | __ Drop(argc + 1); |
| 2245 | __ Ret(); |
| 2246 | |
| 2247 | // Tail call the full function. We do not have to patch the receiver |
| 2248 | // because the function makes no use of it. |
| 2249 | __ bind(&slow); |
erik.corry@gmail.com | d6076d9 | 2011-06-06 09:39:18 +0000 | [diff] [blame] | 2250 | __ InvokeFunction(function, arguments(), JUMP_FUNCTION, CALL_AS_METHOD); |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 2251 | |
| 2252 | __ bind(&miss); |
| 2253 | // a2: function name. |
| 2254 | MaybeObject* maybe_result = GenerateMissBranch(); |
| 2255 | if (maybe_result->IsFailure()) return maybe_result; |
| 2256 | |
| 2257 | // Return the generated code. |
| 2258 | return (cell == NULL) ? GetCode(function) : GetCode(NORMAL, name); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 2259 | } |
| 2260 | |
| 2261 | |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 2262 | MaybeObject* CallStubCompiler::CompileFastApiCall( |
| 2263 | const CallOptimization& optimization, |
| 2264 | Object* object, |
| 2265 | JSObject* holder, |
| 2266 | JSGlobalPropertyCell* cell, |
| 2267 | JSFunction* function, |
| 2268 | String* name) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 2269 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2270 | Counters* counters = isolate()->counters(); |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 2271 | |
| 2272 | ASSERT(optimization.is_simple_api_call()); |
| 2273 | // Bail out if object is a global object as we don't want to |
| 2274 | // repatch it to global receiver. |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2275 | if (object->IsGlobalObject()) return heap()->undefined_value(); |
| 2276 | if (cell != NULL) return heap()->undefined_value(); |
ager@chromium.org | ea91cc5 | 2011-05-23 06:06:11 +0000 | [diff] [blame] | 2277 | if (!object->IsJSObject()) return heap()->undefined_value(); |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 2278 | int depth = optimization.GetPrototypeDepthOfExpectedType( |
| 2279 | JSObject::cast(object), holder); |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2280 | if (depth == kInvalidProtoDepth) return heap()->undefined_value(); |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 2281 | |
| 2282 | Label miss, miss_before_stack_reserved; |
| 2283 | |
| 2284 | GenerateNameCheck(name, &miss_before_stack_reserved); |
| 2285 | |
| 2286 | // Get the receiver from the stack. |
| 2287 | const int argc = arguments().immediate(); |
| 2288 | __ lw(a1, MemOperand(sp, argc * kPointerSize)); |
| 2289 | |
| 2290 | // Check that the receiver isn't a smi. |
| 2291 | __ JumpIfSmi(a1, &miss_before_stack_reserved); |
| 2292 | |
| 2293 | __ IncrementCounter(counters->call_const(), 1, a0, a3); |
| 2294 | __ IncrementCounter(counters->call_const_fast_api(), 1, a0, a3); |
| 2295 | |
| 2296 | ReserveSpaceForFastApiCall(masm(), a0); |
| 2297 | |
| 2298 | // Check that the maps haven't changed and find a Holder as a side effect. |
| 2299 | CheckPrototypes(JSObject::cast(object), a1, holder, a0, a3, t0, name, |
| 2300 | depth, &miss); |
| 2301 | |
| 2302 | MaybeObject* result = GenerateFastApiDirectCall(masm(), optimization, argc); |
| 2303 | if (result->IsFailure()) return result; |
| 2304 | |
| 2305 | __ bind(&miss); |
| 2306 | FreeSpaceForFastApiCall(masm()); |
| 2307 | |
| 2308 | __ bind(&miss_before_stack_reserved); |
| 2309 | MaybeObject* maybe_result = GenerateMissBranch(); |
| 2310 | if (maybe_result->IsFailure()) return maybe_result; |
| 2311 | |
| 2312 | // Return the generated code. |
| 2313 | return GetCode(function); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 2314 | } |
| 2315 | |
| 2316 | |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 2317 | MaybeObject* CallStubCompiler::CompileCallConstant(Object* object, |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 2318 | JSObject* holder, |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 2319 | JSFunction* function, |
| 2320 | String* name, |
| 2321 | CheckType check) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 2322 | // ----------- S t a t e ------------- |
| 2323 | // -- a2 : name |
| 2324 | // -- ra : return address |
| 2325 | // ----------------------------------- |
| 2326 | if (HasCustomCallGenerator(function)) { |
| 2327 | MaybeObject* maybe_result = CompileCustomCall( |
| 2328 | object, holder, NULL, function, name); |
| 2329 | Object* result; |
| 2330 | if (!maybe_result->ToObject(&result)) return maybe_result; |
| 2331 | // Undefined means bail out to regular compiler. |
| 2332 | if (!result->IsUndefined()) return result; |
| 2333 | } |
| 2334 | |
| 2335 | Label miss; |
| 2336 | |
| 2337 | GenerateNameCheck(name, &miss); |
| 2338 | |
| 2339 | // Get the receiver from the stack. |
| 2340 | const int argc = arguments().immediate(); |
| 2341 | __ lw(a1, MemOperand(sp, argc * kPointerSize)); |
| 2342 | |
| 2343 | // Check that the receiver isn't a smi. |
| 2344 | if (check != NUMBER_CHECK) { |
| 2345 | __ And(t1, a1, Operand(kSmiTagMask)); |
| 2346 | __ Branch(&miss, eq, t1, Operand(zero_reg)); |
| 2347 | } |
| 2348 | |
| 2349 | // Make sure that it's okay not to patch the on stack receiver |
| 2350 | // unless we're doing a receiver map check. |
| 2351 | ASSERT(!object->IsGlobalObject() || check == RECEIVER_MAP_CHECK); |
| 2352 | |
| 2353 | SharedFunctionInfo* function_info = function->shared(); |
| 2354 | switch (check) { |
| 2355 | case RECEIVER_MAP_CHECK: |
| 2356 | __ IncrementCounter(masm()->isolate()->counters()->call_const(), |
| 2357 | 1, a0, a3); |
| 2358 | |
| 2359 | // Check that the maps haven't changed. |
| 2360 | CheckPrototypes(JSObject::cast(object), a1, holder, a0, a3, t0, name, |
| 2361 | &miss); |
| 2362 | |
| 2363 | // Patch the receiver on the stack with the global proxy if |
| 2364 | // necessary. |
| 2365 | if (object->IsGlobalObject()) { |
| 2366 | __ lw(a3, FieldMemOperand(a1, GlobalObject::kGlobalReceiverOffset)); |
| 2367 | __ sw(a3, MemOperand(sp, argc * kPointerSize)); |
| 2368 | } |
| 2369 | break; |
| 2370 | |
| 2371 | case STRING_CHECK: |
| 2372 | if (!function->IsBuiltin() && !function_info->strict_mode()) { |
| 2373 | // Calling non-strict non-builtins with a value as the receiver |
| 2374 | // requires boxing. |
| 2375 | __ jmp(&miss); |
| 2376 | } else { |
| 2377 | // Check that the object is a two-byte string or a symbol. |
| 2378 | __ GetObjectType(a1, a3, a3); |
| 2379 | __ Branch(&miss, Ugreater_equal, a3, Operand(FIRST_NONSTRING_TYPE)); |
| 2380 | // Check that the maps starting from the prototype haven't changed. |
| 2381 | GenerateDirectLoadGlobalFunctionPrototype( |
| 2382 | masm(), Context::STRING_FUNCTION_INDEX, a0, &miss); |
| 2383 | CheckPrototypes(JSObject::cast(object->GetPrototype()), a0, holder, a3, |
| 2384 | a1, t0, name, &miss); |
| 2385 | } |
| 2386 | break; |
| 2387 | |
| 2388 | case NUMBER_CHECK: { |
| 2389 | if (!function->IsBuiltin() && !function_info->strict_mode()) { |
| 2390 | // Calling non-strict non-builtins with a value as the receiver |
| 2391 | // requires boxing. |
| 2392 | __ jmp(&miss); |
| 2393 | } else { |
| 2394 | Label fast; |
| 2395 | // Check that the object is a smi or a heap number. |
| 2396 | __ And(t1, a1, Operand(kSmiTagMask)); |
| 2397 | __ Branch(&fast, eq, t1, Operand(zero_reg)); |
| 2398 | __ GetObjectType(a1, a0, a0); |
| 2399 | __ Branch(&miss, ne, a0, Operand(HEAP_NUMBER_TYPE)); |
| 2400 | __ bind(&fast); |
| 2401 | // Check that the maps starting from the prototype haven't changed. |
| 2402 | GenerateDirectLoadGlobalFunctionPrototype( |
| 2403 | masm(), Context::NUMBER_FUNCTION_INDEX, a0, &miss); |
| 2404 | CheckPrototypes(JSObject::cast(object->GetPrototype()), a0, holder, a3, |
| 2405 | a1, t0, name, &miss); |
| 2406 | } |
| 2407 | break; |
| 2408 | } |
| 2409 | |
| 2410 | case BOOLEAN_CHECK: { |
| 2411 | if (!function->IsBuiltin() && !function_info->strict_mode()) { |
| 2412 | // Calling non-strict non-builtins with a value as the receiver |
| 2413 | // requires boxing. |
| 2414 | __ jmp(&miss); |
| 2415 | } else { |
| 2416 | Label fast; |
| 2417 | // Check that the object is a boolean. |
| 2418 | __ LoadRoot(t0, Heap::kTrueValueRootIndex); |
| 2419 | __ Branch(&fast, eq, a1, Operand(t0)); |
| 2420 | __ LoadRoot(t0, Heap::kFalseValueRootIndex); |
| 2421 | __ Branch(&miss, ne, a1, Operand(t0)); |
| 2422 | __ bind(&fast); |
| 2423 | // Check that the maps starting from the prototype haven't changed. |
| 2424 | GenerateDirectLoadGlobalFunctionPrototype( |
| 2425 | masm(), Context::BOOLEAN_FUNCTION_INDEX, a0, &miss); |
| 2426 | CheckPrototypes(JSObject::cast(object->GetPrototype()), a0, holder, a3, |
| 2427 | a1, t0, name, &miss); |
| 2428 | } |
| 2429 | break; |
| 2430 | } |
| 2431 | |
| 2432 | default: |
| 2433 | UNREACHABLE(); |
| 2434 | } |
| 2435 | |
erik.corry@gmail.com | d6076d9 | 2011-06-06 09:39:18 +0000 | [diff] [blame] | 2436 | CallKind call_kind = CallICBase::Contextual::decode(extra_ic_state_) |
| 2437 | ? CALL_AS_FUNCTION |
| 2438 | : CALL_AS_METHOD; |
| 2439 | __ InvokeFunction(function, arguments(), JUMP_FUNCTION, call_kind); |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 2440 | |
| 2441 | // Handle call cache miss. |
| 2442 | __ bind(&miss); |
| 2443 | |
| 2444 | MaybeObject* maybe_result = GenerateMissBranch(); |
| 2445 | if (maybe_result->IsFailure()) return maybe_result; |
| 2446 | |
| 2447 | // Return the generated code. |
| 2448 | return GetCode(function); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 2449 | } |
| 2450 | |
| 2451 | |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 2452 | MaybeObject* CallStubCompiler::CompileCallInterceptor(JSObject* object, |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 2453 | JSObject* holder, |
| 2454 | String* name) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 2455 | // ----------- S t a t e ------------- |
| 2456 | // -- a2 : name |
| 2457 | // -- ra : return address |
| 2458 | // ----------------------------------- |
| 2459 | |
| 2460 | Label miss; |
| 2461 | |
| 2462 | GenerateNameCheck(name, &miss); |
| 2463 | |
| 2464 | // Get the number of arguments. |
| 2465 | const int argc = arguments().immediate(); |
| 2466 | |
| 2467 | LookupResult lookup; |
| 2468 | LookupPostInterceptor(holder, name, &lookup); |
| 2469 | |
| 2470 | // Get the receiver from the stack. |
| 2471 | __ lw(a1, MemOperand(sp, argc * kPointerSize)); |
| 2472 | |
erik.corry@gmail.com | d6076d9 | 2011-06-06 09:39:18 +0000 | [diff] [blame] | 2473 | CallInterceptorCompiler compiler(this, arguments(), a2, extra_ic_state_); |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 2474 | MaybeObject* result = compiler.Compile(masm(), |
| 2475 | object, |
| 2476 | holder, |
| 2477 | name, |
| 2478 | &lookup, |
| 2479 | a1, |
| 2480 | a3, |
| 2481 | t0, |
| 2482 | a0, |
| 2483 | &miss); |
| 2484 | if (result->IsFailure()) { |
| 2485 | return result; |
| 2486 | } |
| 2487 | |
| 2488 | // Move returned value, the function to call, to a1. |
| 2489 | __ mov(a1, v0); |
| 2490 | // Restore receiver. |
| 2491 | __ lw(a0, MemOperand(sp, argc * kPointerSize)); |
| 2492 | |
erik.corry@gmail.com | d6076d9 | 2011-06-06 09:39:18 +0000 | [diff] [blame] | 2493 | GenerateCallFunction(masm(), object, arguments(), &miss, extra_ic_state_); |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 2494 | |
| 2495 | // Handle call cache miss. |
| 2496 | __ bind(&miss); |
| 2497 | MaybeObject* maybe_result = GenerateMissBranch(); |
| 2498 | if (maybe_result->IsFailure()) return maybe_result; |
| 2499 | |
| 2500 | // Return the generated code. |
| 2501 | return GetCode(INTERCEPTOR, name); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 2502 | } |
| 2503 | |
| 2504 | |
erik.corry@gmail.com | d6076d9 | 2011-06-06 09:39:18 +0000 | [diff] [blame] | 2505 | MaybeObject* CallStubCompiler::CompileCallGlobal(JSObject* object, |
| 2506 | GlobalObject* holder, |
| 2507 | JSGlobalPropertyCell* cell, |
| 2508 | JSFunction* function, |
| 2509 | String* name) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 2510 | // ----------- S t a t e ------------- |
| 2511 | // -- a2 : name |
| 2512 | // -- ra : return address |
| 2513 | // ----------------------------------- |
| 2514 | |
| 2515 | if (HasCustomCallGenerator(function)) { |
| 2516 | MaybeObject* maybe_result = CompileCustomCall( |
| 2517 | object, holder, cell, function, name); |
| 2518 | Object* result; |
| 2519 | if (!maybe_result->ToObject(&result)) return maybe_result; |
| 2520 | // Undefined means bail out to regular compiler. |
| 2521 | if (!result->IsUndefined()) return result; |
| 2522 | } |
| 2523 | |
| 2524 | Label miss; |
| 2525 | |
| 2526 | GenerateNameCheck(name, &miss); |
| 2527 | |
| 2528 | // Get the number of arguments. |
| 2529 | const int argc = arguments().immediate(); |
| 2530 | |
| 2531 | GenerateGlobalReceiverCheck(object, holder, name, &miss); |
| 2532 | GenerateLoadFunctionFromCell(cell, function, &miss); |
| 2533 | |
| 2534 | // Patch the receiver on the stack with the global proxy if |
| 2535 | // necessary. |
| 2536 | if (object->IsGlobalObject()) { |
| 2537 | __ lw(a3, FieldMemOperand(a0, GlobalObject::kGlobalReceiverOffset)); |
| 2538 | __ sw(a3, MemOperand(sp, argc * kPointerSize)); |
| 2539 | } |
| 2540 | |
| 2541 | // Setup the context (function already in r1). |
| 2542 | __ lw(cp, FieldMemOperand(a1, JSFunction::kContextOffset)); |
| 2543 | |
| 2544 | // Jump to the cached code (tail call). |
| 2545 | Counters* counters = masm()->isolate()->counters(); |
| 2546 | __ IncrementCounter(counters->call_global_inline(), 1, a3, t0); |
| 2547 | ASSERT(function->is_compiled()); |
| 2548 | Handle<Code> code(function->code()); |
| 2549 | ParameterCount expected(function->shared()->formal_parameter_count()); |
erik.corry@gmail.com | d6076d9 | 2011-06-06 09:39:18 +0000 | [diff] [blame] | 2550 | CallKind call_kind = CallICBase::Contextual::decode(extra_ic_state_) |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2551 | ? CALL_AS_FUNCTION |
| 2552 | : CALL_AS_METHOD; |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 2553 | if (V8::UseCrankshaft()) { |
| 2554 | UNIMPLEMENTED_MIPS(); |
| 2555 | } else { |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2556 | __ InvokeCode(code, expected, arguments(), RelocInfo::CODE_TARGET, |
| 2557 | JUMP_FUNCTION, call_kind); |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 2558 | } |
| 2559 | |
| 2560 | // Handle call cache miss. |
| 2561 | __ bind(&miss); |
| 2562 | __ IncrementCounter(counters->call_global_inline_miss(), 1, a1, a3); |
| 2563 | MaybeObject* maybe_result = GenerateMissBranch(); |
| 2564 | if (maybe_result->IsFailure()) return maybe_result; |
| 2565 | |
| 2566 | // Return the generated code. |
| 2567 | return GetCode(NORMAL, name); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 2568 | } |
| 2569 | |
| 2570 | |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 2571 | MaybeObject* StoreStubCompiler::CompileStoreField(JSObject* object, |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 2572 | int index, |
| 2573 | Map* transition, |
| 2574 | String* name) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 2575 | // ----------- S t a t e ------------- |
| 2576 | // -- a0 : value |
| 2577 | // -- a1 : receiver |
| 2578 | // -- a2 : name |
| 2579 | // -- ra : return address |
| 2580 | // ----------------------------------- |
| 2581 | Label miss; |
| 2582 | |
| 2583 | // Name register might be clobbered. |
| 2584 | GenerateStoreField(masm(), |
| 2585 | object, |
| 2586 | index, |
| 2587 | transition, |
| 2588 | a1, a2, a3, |
| 2589 | &miss); |
| 2590 | __ bind(&miss); |
| 2591 | __ li(a2, Operand(Handle<String>(name))); // Restore name. |
| 2592 | Handle<Code> ic = masm()->isolate()->builtins()->Builtins::StoreIC_Miss(); |
| 2593 | __ Jump(ic, RelocInfo::CODE_TARGET); |
| 2594 | |
| 2595 | // Return the generated code. |
| 2596 | return GetCode(transition == NULL ? FIELD : MAP_TRANSITION, name); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 2597 | } |
| 2598 | |
| 2599 | |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 2600 | MaybeObject* StoreStubCompiler::CompileStoreCallback(JSObject* object, |
| 2601 | AccessorInfo* callback, |
| 2602 | String* name) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 2603 | // ----------- S t a t e ------------- |
| 2604 | // -- a0 : value |
| 2605 | // -- a1 : receiver |
| 2606 | // -- a2 : name |
| 2607 | // -- ra : return address |
| 2608 | // ----------------------------------- |
| 2609 | Label miss; |
| 2610 | |
| 2611 | // Check that the object isn't a smi. |
| 2612 | __ JumpIfSmi(a1, &miss); |
| 2613 | |
| 2614 | // Check that the map of the object hasn't changed. |
| 2615 | __ lw(a3, FieldMemOperand(a1, HeapObject::kMapOffset)); |
| 2616 | __ Branch(&miss, ne, a3, Operand(Handle<Map>(object->map()))); |
| 2617 | |
| 2618 | // Perform global security token check if needed. |
| 2619 | if (object->IsJSGlobalProxy()) { |
| 2620 | __ CheckAccessGlobalProxy(a1, a3, &miss); |
| 2621 | } |
| 2622 | |
| 2623 | // Stub never generated for non-global objects that require access |
| 2624 | // checks. |
| 2625 | ASSERT(object->IsJSGlobalProxy() || !object->IsAccessCheckNeeded()); |
| 2626 | |
| 2627 | __ push(a1); // Receiver. |
| 2628 | __ li(a3, Operand(Handle<AccessorInfo>(callback))); // Callback info. |
| 2629 | __ Push(a3, a2, a0); |
| 2630 | |
| 2631 | // Do tail-call to the runtime system. |
| 2632 | ExternalReference store_callback_property = |
| 2633 | ExternalReference(IC_Utility(IC::kStoreCallbackProperty), |
| 2634 | masm()->isolate()); |
| 2635 | __ TailCallExternalReference(store_callback_property, 4, 1); |
| 2636 | |
| 2637 | // Handle store cache miss. |
| 2638 | __ bind(&miss); |
| 2639 | Handle<Code> ic = masm()->isolate()->builtins()->StoreIC_Miss(); |
| 2640 | __ Jump(ic, RelocInfo::CODE_TARGET); |
| 2641 | |
| 2642 | // Return the generated code. |
| 2643 | return GetCode(CALLBACKS, name); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 2644 | } |
| 2645 | |
| 2646 | |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 2647 | MaybeObject* StoreStubCompiler::CompileStoreInterceptor(JSObject* receiver, |
| 2648 | String* name) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 2649 | // ----------- S t a t e ------------- |
| 2650 | // -- a0 : value |
| 2651 | // -- a1 : receiver |
| 2652 | // -- a2 : name |
| 2653 | // -- ra : return address |
| 2654 | // ----------------------------------- |
| 2655 | Label miss; |
| 2656 | |
| 2657 | // Check that the object isn't a smi. |
| 2658 | __ JumpIfSmi(a1, &miss); |
| 2659 | |
| 2660 | // Check that the map of the object hasn't changed. |
| 2661 | __ lw(a3, FieldMemOperand(a1, HeapObject::kMapOffset)); |
| 2662 | __ Branch(&miss, ne, a3, Operand(Handle<Map>(receiver->map()))); |
| 2663 | |
| 2664 | // Perform global security token check if needed. |
| 2665 | if (receiver->IsJSGlobalProxy()) { |
| 2666 | __ CheckAccessGlobalProxy(a1, a3, &miss); |
| 2667 | } |
| 2668 | |
| 2669 | // Stub is never generated for non-global objects that require access |
| 2670 | // checks. |
| 2671 | ASSERT(receiver->IsJSGlobalProxy() || !receiver->IsAccessCheckNeeded()); |
| 2672 | |
| 2673 | __ Push(a1, a2, a0); // Receiver, name, value. |
| 2674 | |
| 2675 | __ li(a0, Operand(Smi::FromInt(strict_mode_))); |
| 2676 | __ push(a0); // Strict mode. |
| 2677 | |
| 2678 | // Do tail-call to the runtime system. |
| 2679 | ExternalReference store_ic_property = |
| 2680 | ExternalReference(IC_Utility(IC::kStoreInterceptorProperty), |
| 2681 | masm()->isolate()); |
| 2682 | __ TailCallExternalReference(store_ic_property, 4, 1); |
| 2683 | |
| 2684 | // Handle store cache miss. |
| 2685 | __ bind(&miss); |
| 2686 | Handle<Code> ic = masm()->isolate()->builtins()->Builtins::StoreIC_Miss(); |
| 2687 | __ Jump(ic, RelocInfo::CODE_TARGET); |
| 2688 | |
| 2689 | // Return the generated code. |
| 2690 | return GetCode(INTERCEPTOR, name); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 2691 | } |
| 2692 | |
| 2693 | |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 2694 | MaybeObject* StoreStubCompiler::CompileStoreGlobal(GlobalObject* object, |
| 2695 | JSGlobalPropertyCell* cell, |
| 2696 | String* name) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 2697 | // ----------- S t a t e ------------- |
| 2698 | // -- a0 : value |
| 2699 | // -- a1 : receiver |
| 2700 | // -- a2 : name |
| 2701 | // -- ra : return address |
| 2702 | // ----------------------------------- |
| 2703 | Label miss; |
| 2704 | |
| 2705 | // Check that the map of the global has not changed. |
| 2706 | __ lw(a3, FieldMemOperand(a1, HeapObject::kMapOffset)); |
| 2707 | __ Branch(&miss, ne, a3, Operand(Handle<Map>(object->map()))); |
| 2708 | |
| 2709 | // Check that the value in the cell is not the hole. If it is, this |
| 2710 | // cell could have been deleted and reintroducing the global needs |
| 2711 | // to update the property details in the property dictionary of the |
| 2712 | // global object. We bail out to the runtime system to do that. |
| 2713 | __ li(t0, Operand(Handle<JSGlobalPropertyCell>(cell))); |
| 2714 | __ LoadRoot(t1, Heap::kTheHoleValueRootIndex); |
| 2715 | __ lw(t2, FieldMemOperand(t0, JSGlobalPropertyCell::kValueOffset)); |
| 2716 | __ Branch(&miss, eq, t1, Operand(t2)); |
| 2717 | |
| 2718 | // Store the value in the cell. |
| 2719 | __ sw(a0, FieldMemOperand(t0, JSGlobalPropertyCell::kValueOffset)); |
| 2720 | __ mov(v0, a0); // Stored value must be returned in v0. |
| 2721 | Counters* counters = masm()->isolate()->counters(); |
| 2722 | __ IncrementCounter(counters->named_store_global_inline(), 1, a1, a3); |
| 2723 | __ Ret(); |
| 2724 | |
| 2725 | // Handle store cache miss. |
| 2726 | __ bind(&miss); |
| 2727 | __ IncrementCounter(counters->named_store_global_inline_miss(), 1, a1, a3); |
| 2728 | Handle<Code> ic = masm()->isolate()->builtins()->StoreIC_Miss(); |
| 2729 | __ Jump(ic, RelocInfo::CODE_TARGET); |
| 2730 | |
| 2731 | // Return the generated code. |
| 2732 | return GetCode(NORMAL, name); |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 2733 | } |
| 2734 | |
| 2735 | |
| 2736 | MaybeObject* LoadStubCompiler::CompileLoadNonexistent(String* name, |
| 2737 | JSObject* object, |
| 2738 | JSObject* last) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 2739 | // ----------- S t a t e ------------- |
| 2740 | // -- a0 : receiver |
| 2741 | // -- ra : return address |
| 2742 | // ----------------------------------- |
| 2743 | Label miss; |
| 2744 | |
| 2745 | // Check that the receiver is not a smi. |
| 2746 | __ JumpIfSmi(a0, &miss); |
| 2747 | |
| 2748 | // Check the maps of the full prototype chain. |
| 2749 | CheckPrototypes(object, a0, last, a3, a1, t0, name, &miss); |
| 2750 | |
| 2751 | // If the last object in the prototype chain is a global object, |
| 2752 | // check that the global property cell is empty. |
| 2753 | if (last->IsGlobalObject()) { |
| 2754 | MaybeObject* cell = GenerateCheckPropertyCell(masm(), |
| 2755 | GlobalObject::cast(last), |
| 2756 | name, |
| 2757 | a1, |
| 2758 | &miss); |
| 2759 | if (cell->IsFailure()) { |
| 2760 | miss.Unuse(); |
| 2761 | return cell; |
| 2762 | } |
| 2763 | } |
| 2764 | |
| 2765 | // Return undefined if maps of the full prototype chain is still the same. |
| 2766 | __ LoadRoot(v0, Heap::kUndefinedValueRootIndex); |
| 2767 | __ Ret(); |
| 2768 | |
| 2769 | __ bind(&miss); |
| 2770 | GenerateLoadMiss(masm(), Code::LOAD_IC); |
| 2771 | |
| 2772 | // Return the generated code. |
| 2773 | return GetCode(NONEXISTENT, heap()->empty_string()); |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 2774 | } |
| 2775 | |
| 2776 | |
| 2777 | MaybeObject* LoadStubCompiler::CompileLoadField(JSObject* object, |
| 2778 | JSObject* holder, |
| 2779 | int index, |
| 2780 | String* name) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 2781 | // ----------- S t a t e ------------- |
| 2782 | // -- a0 : receiver |
| 2783 | // -- a2 : name |
| 2784 | // -- ra : return address |
| 2785 | // ----------------------------------- |
| 2786 | Label miss; |
| 2787 | |
| 2788 | __ mov(v0, a0); |
| 2789 | |
| 2790 | GenerateLoadField(object, holder, v0, a3, a1, t0, index, name, &miss); |
| 2791 | __ bind(&miss); |
| 2792 | GenerateLoadMiss(masm(), Code::LOAD_IC); |
| 2793 | |
| 2794 | // Return the generated code. |
| 2795 | return GetCode(FIELD, name); |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 2796 | } |
| 2797 | |
| 2798 | |
| 2799 | MaybeObject* LoadStubCompiler::CompileLoadCallback(String* name, |
| 2800 | JSObject* object, |
| 2801 | JSObject* holder, |
| 2802 | AccessorInfo* callback) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 2803 | // ----------- S t a t e ------------- |
| 2804 | // -- a0 : receiver |
| 2805 | // -- a2 : name |
| 2806 | // -- ra : return address |
| 2807 | // ----------------------------------- |
| 2808 | Label miss; |
| 2809 | |
| 2810 | MaybeObject* result = GenerateLoadCallback(object, holder, a0, a2, a3, a1, t0, |
| 2811 | callback, name, &miss); |
| 2812 | if (result->IsFailure()) { |
| 2813 | miss.Unuse(); |
| 2814 | return result; |
| 2815 | } |
| 2816 | |
| 2817 | __ bind(&miss); |
| 2818 | GenerateLoadMiss(masm(), Code::LOAD_IC); |
| 2819 | |
| 2820 | // Return the generated code. |
| 2821 | return GetCode(CALLBACKS, name); |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 2822 | } |
| 2823 | |
| 2824 | |
| 2825 | MaybeObject* LoadStubCompiler::CompileLoadConstant(JSObject* object, |
| 2826 | JSObject* holder, |
| 2827 | Object* value, |
| 2828 | String* name) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 2829 | // ----------- S t a t e ------------- |
| 2830 | // -- a0 : receiver |
| 2831 | // -- a2 : name |
| 2832 | // -- ra : return address |
| 2833 | // ----------------------------------- |
| 2834 | Label miss; |
| 2835 | |
| 2836 | GenerateLoadConstant(object, holder, a0, a3, a1, t0, value, name, &miss); |
| 2837 | __ bind(&miss); |
| 2838 | GenerateLoadMiss(masm(), Code::LOAD_IC); |
| 2839 | |
| 2840 | // Return the generated code. |
| 2841 | return GetCode(CONSTANT_FUNCTION, name); |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 2842 | } |
| 2843 | |
| 2844 | |
| 2845 | MaybeObject* LoadStubCompiler::CompileLoadInterceptor(JSObject* object, |
| 2846 | JSObject* holder, |
| 2847 | String* name) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 2848 | // ----------- S t a t e ------------- |
| 2849 | // -- a0 : receiver |
| 2850 | // -- a2 : name |
| 2851 | // -- ra : return address |
| 2852 | // -- [sp] : receiver |
| 2853 | // ----------------------------------- |
| 2854 | Label miss; |
| 2855 | |
| 2856 | LookupResult lookup; |
| 2857 | LookupPostInterceptor(holder, name, &lookup); |
| 2858 | GenerateLoadInterceptor(object, |
| 2859 | holder, |
| 2860 | &lookup, |
| 2861 | a0, |
| 2862 | a2, |
| 2863 | a3, |
| 2864 | a1, |
| 2865 | t0, |
| 2866 | name, |
| 2867 | &miss); |
| 2868 | __ bind(&miss); |
| 2869 | GenerateLoadMiss(masm(), Code::LOAD_IC); |
| 2870 | |
| 2871 | // Return the generated code. |
| 2872 | return GetCode(INTERCEPTOR, name); |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 2873 | } |
| 2874 | |
| 2875 | |
| 2876 | MaybeObject* LoadStubCompiler::CompileLoadGlobal(JSObject* object, |
| 2877 | GlobalObject* holder, |
| 2878 | JSGlobalPropertyCell* cell, |
| 2879 | String* name, |
| 2880 | bool is_dont_delete) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 2881 | // ----------- S t a t e ------------- |
| 2882 | // -- a0 : receiver |
| 2883 | // -- a2 : name |
| 2884 | // -- ra : return address |
| 2885 | // ----------------------------------- |
| 2886 | Label miss; |
| 2887 | |
| 2888 | // If the object is the holder then we know that it's a global |
| 2889 | // object which can only happen for contextual calls. In this case, |
| 2890 | // the receiver cannot be a smi. |
| 2891 | if (object != holder) { |
| 2892 | __ And(t0, a0, Operand(kSmiTagMask)); |
| 2893 | __ Branch(&miss, eq, t0, Operand(zero_reg)); |
| 2894 | } |
| 2895 | |
| 2896 | // Check that the map of the global has not changed. |
| 2897 | CheckPrototypes(object, a0, holder, a3, t0, a1, name, &miss); |
| 2898 | |
| 2899 | // Get the value from the cell. |
| 2900 | __ li(a3, Operand(Handle<JSGlobalPropertyCell>(cell))); |
| 2901 | __ lw(t0, FieldMemOperand(a3, JSGlobalPropertyCell::kValueOffset)); |
| 2902 | |
| 2903 | // Check for deleted property if property can actually be deleted. |
| 2904 | if (!is_dont_delete) { |
| 2905 | __ LoadRoot(at, Heap::kTheHoleValueRootIndex); |
| 2906 | __ Branch(&miss, eq, t0, Operand(at)); |
| 2907 | } |
| 2908 | |
| 2909 | __ mov(v0, t0); |
| 2910 | Counters* counters = masm()->isolate()->counters(); |
| 2911 | __ IncrementCounter(counters->named_load_global_stub(), 1, a1, a3); |
| 2912 | __ Ret(); |
| 2913 | |
| 2914 | __ bind(&miss); |
| 2915 | __ IncrementCounter(counters->named_load_global_stub_miss(), 1, a1, a3); |
| 2916 | GenerateLoadMiss(masm(), Code::LOAD_IC); |
| 2917 | |
| 2918 | // Return the generated code. |
| 2919 | return GetCode(NORMAL, name); |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 2920 | } |
| 2921 | |
| 2922 | |
| 2923 | MaybeObject* KeyedLoadStubCompiler::CompileLoadField(String* name, |
| 2924 | JSObject* receiver, |
| 2925 | JSObject* holder, |
| 2926 | int index) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 2927 | // ----------- S t a t e ------------- |
| 2928 | // -- ra : return address |
| 2929 | // -- a0 : key |
| 2930 | // -- a1 : receiver |
| 2931 | // ----------------------------------- |
| 2932 | Label miss; |
| 2933 | |
| 2934 | // Check the key is the cached one. |
| 2935 | __ Branch(&miss, ne, a0, Operand(Handle<String>(name))); |
| 2936 | |
| 2937 | GenerateLoadField(receiver, holder, a1, a2, a3, t0, index, name, &miss); |
| 2938 | __ bind(&miss); |
| 2939 | GenerateLoadMiss(masm(), Code::KEYED_LOAD_IC); |
| 2940 | |
| 2941 | return GetCode(FIELD, name); |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 2942 | } |
| 2943 | |
| 2944 | |
| 2945 | MaybeObject* KeyedLoadStubCompiler::CompileLoadCallback( |
| 2946 | String* name, |
| 2947 | JSObject* receiver, |
| 2948 | JSObject* holder, |
| 2949 | AccessorInfo* callback) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 2950 | // ----------- S t a t e ------------- |
| 2951 | // -- ra : return address |
| 2952 | // -- a0 : key |
| 2953 | // -- a1 : receiver |
| 2954 | // ----------------------------------- |
| 2955 | Label miss; |
| 2956 | |
| 2957 | // Check the key is the cached one. |
| 2958 | __ Branch(&miss, ne, a0, Operand(Handle<String>(name))); |
| 2959 | |
| 2960 | MaybeObject* result = GenerateLoadCallback(receiver, holder, a1, a0, a2, a3, |
| 2961 | t0, callback, name, &miss); |
| 2962 | if (result->IsFailure()) { |
| 2963 | miss.Unuse(); |
| 2964 | return result; |
| 2965 | } |
| 2966 | |
| 2967 | __ bind(&miss); |
| 2968 | GenerateLoadMiss(masm(), Code::KEYED_LOAD_IC); |
| 2969 | |
| 2970 | return GetCode(CALLBACKS, name); |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 2971 | } |
| 2972 | |
| 2973 | |
| 2974 | MaybeObject* KeyedLoadStubCompiler::CompileLoadConstant(String* name, |
| 2975 | JSObject* receiver, |
| 2976 | JSObject* holder, |
| 2977 | Object* value) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 2978 | // ----------- S t a t e ------------- |
| 2979 | // -- ra : return address |
| 2980 | // -- a0 : key |
| 2981 | // -- a1 : receiver |
| 2982 | // ----------------------------------- |
| 2983 | Label miss; |
| 2984 | |
| 2985 | // Check the key is the cached one. |
| 2986 | __ Branch(&miss, ne, a0, Operand(Handle<String>(name))); |
| 2987 | |
| 2988 | GenerateLoadConstant(receiver, holder, a1, a2, a3, t0, value, name, &miss); |
| 2989 | __ bind(&miss); |
| 2990 | GenerateLoadMiss(masm(), Code::KEYED_LOAD_IC); |
| 2991 | |
| 2992 | // Return the generated code. |
| 2993 | return GetCode(CONSTANT_FUNCTION, name); |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 2994 | } |
| 2995 | |
| 2996 | |
| 2997 | MaybeObject* KeyedLoadStubCompiler::CompileLoadInterceptor(JSObject* receiver, |
| 2998 | JSObject* holder, |
| 2999 | String* name) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3000 | // ----------- S t a t e ------------- |
| 3001 | // -- ra : return address |
| 3002 | // -- a0 : key |
| 3003 | // -- a1 : receiver |
| 3004 | // ----------------------------------- |
| 3005 | Label miss; |
| 3006 | |
| 3007 | // Check the key is the cached one. |
| 3008 | __ Branch(&miss, ne, a0, Operand(Handle<String>(name))); |
| 3009 | |
| 3010 | LookupResult lookup; |
| 3011 | LookupPostInterceptor(holder, name, &lookup); |
| 3012 | GenerateLoadInterceptor(receiver, |
| 3013 | holder, |
| 3014 | &lookup, |
| 3015 | a1, |
| 3016 | a0, |
| 3017 | a2, |
| 3018 | a3, |
| 3019 | t0, |
| 3020 | name, |
| 3021 | &miss); |
| 3022 | __ bind(&miss); |
| 3023 | GenerateLoadMiss(masm(), Code::KEYED_LOAD_IC); |
| 3024 | |
| 3025 | return GetCode(INTERCEPTOR, name); |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 3026 | } |
| 3027 | |
| 3028 | |
| 3029 | MaybeObject* KeyedLoadStubCompiler::CompileLoadArrayLength(String* name) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3030 | // ----------- S t a t e ------------- |
| 3031 | // -- ra : return address |
| 3032 | // -- a0 : key |
| 3033 | // -- a1 : receiver |
| 3034 | // ----------------------------------- |
| 3035 | Label miss; |
| 3036 | |
| 3037 | // Check the key is the cached one. |
| 3038 | __ Branch(&miss, ne, a0, Operand(Handle<String>(name))); |
| 3039 | |
| 3040 | GenerateLoadArrayLength(masm(), a1, a2, &miss); |
| 3041 | __ bind(&miss); |
| 3042 | GenerateLoadMiss(masm(), Code::KEYED_LOAD_IC); |
| 3043 | |
| 3044 | return GetCode(CALLBACKS, name); |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 3045 | } |
| 3046 | |
| 3047 | |
| 3048 | MaybeObject* KeyedLoadStubCompiler::CompileLoadStringLength(String* name) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3049 | // ----------- S t a t e ------------- |
| 3050 | // -- ra : return address |
| 3051 | // -- a0 : key |
| 3052 | // -- a1 : receiver |
| 3053 | // ----------------------------------- |
| 3054 | Label miss; |
| 3055 | |
| 3056 | Counters* counters = masm()->isolate()->counters(); |
| 3057 | __ IncrementCounter(counters->keyed_load_string_length(), 1, a2, a3); |
| 3058 | |
| 3059 | // Check the key is the cached one. |
| 3060 | __ Branch(&miss, ne, a0, Operand(Handle<String>(name))); |
| 3061 | |
| 3062 | GenerateLoadStringLength(masm(), a1, a2, a3, &miss, true); |
| 3063 | __ bind(&miss); |
| 3064 | __ DecrementCounter(counters->keyed_load_string_length(), 1, a2, a3); |
| 3065 | |
| 3066 | GenerateLoadMiss(masm(), Code::KEYED_LOAD_IC); |
| 3067 | |
| 3068 | return GetCode(CALLBACKS, name); |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 3069 | } |
| 3070 | |
| 3071 | |
| 3072 | MaybeObject* KeyedLoadStubCompiler::CompileLoadFunctionPrototype(String* name) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3073 | // ----------- S t a t e ------------- |
| 3074 | // -- ra : return address |
| 3075 | // -- a0 : key |
| 3076 | // -- a1 : receiver |
| 3077 | // ----------------------------------- |
| 3078 | Label miss; |
| 3079 | |
| 3080 | Counters* counters = masm()->isolate()->counters(); |
| 3081 | __ IncrementCounter(counters->keyed_load_function_prototype(), 1, a2, a3); |
| 3082 | |
| 3083 | // Check the name hasn't changed. |
| 3084 | __ Branch(&miss, ne, a0, Operand(Handle<String>(name))); |
| 3085 | |
| 3086 | GenerateLoadFunctionPrototype(masm(), a1, a2, a3, &miss); |
| 3087 | __ bind(&miss); |
| 3088 | __ DecrementCounter(counters->keyed_load_function_prototype(), 1, a2, a3); |
| 3089 | GenerateLoadMiss(masm(), Code::KEYED_LOAD_IC); |
| 3090 | |
| 3091 | return GetCode(CALLBACKS, name); |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 3092 | } |
| 3093 | |
| 3094 | |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 3095 | MaybeObject* KeyedLoadStubCompiler::CompileLoadElement(Map* receiver_map) { |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 3096 | // ----------- S t a t e ------------- |
| 3097 | // -- ra : return address |
| 3098 | // -- a0 : key |
| 3099 | // -- a1 : receiver |
| 3100 | // ----------------------------------- |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 3101 | Code* stub; |
sgjesse@chromium.org | 6db8871 | 2011-07-11 11:41:22 +0000 | [diff] [blame] | 3102 | JSObject::ElementsKind elements_kind = receiver_map->elements_kind(); |
| 3103 | MaybeObject* maybe_stub = KeyedLoadElementStub(elements_kind).TryGetCode(); |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 3104 | if (!maybe_stub->To(&stub)) return maybe_stub; |
| 3105 | __ DispatchMap(a1, |
| 3106 | a2, |
| 3107 | Handle<Map>(receiver_map), |
| 3108 | Handle<Code>(stub), |
| 3109 | DO_SMI_CHECK); |
| 3110 | |
| 3111 | Handle<Code> ic = isolate()->builtins()->KeyedLoadIC_Miss(); |
| 3112 | __ Jump(ic, RelocInfo::CODE_TARGET); |
| 3113 | |
| 3114 | // Return the generated code. |
| 3115 | return GetCode(NORMAL, NULL); |
| 3116 | } |
| 3117 | |
| 3118 | |
| 3119 | MaybeObject* KeyedLoadStubCompiler::CompileLoadMegamorphic( |
| 3120 | MapList* receiver_maps, |
| 3121 | CodeList* handler_ics) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3122 | // ----------- S t a t e ------------- |
| 3123 | // -- ra : return address |
| 3124 | // -- a0 : key |
| 3125 | // -- a1 : receiver |
| 3126 | // ----------------------------------- |
| 3127 | Label miss; |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3128 | __ JumpIfSmi(a1, &miss); |
| 3129 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 3130 | int receiver_count = receiver_maps->length(); |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3131 | __ lw(a2, FieldMemOperand(a1, HeapObject::kMapOffset)); |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 3132 | for (int current = 0; current < receiver_count; ++current) { |
| 3133 | Handle<Map> map(receiver_maps->at(current)); |
| 3134 | Handle<Code> code(handler_ics->at(current)); |
| 3135 | __ Jump(code, RelocInfo::CODE_TARGET, eq, a2, Operand(map)); |
| 3136 | } |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3137 | |
| 3138 | __ bind(&miss); |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 3139 | Handle<Code> miss_ic = isolate()->builtins()->KeyedLoadIC_Miss(); |
| 3140 | __ Jump(miss_ic, RelocInfo::CODE_TARGET); |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3141 | |
| 3142 | // Return the generated code. |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 3143 | return GetCode(NORMAL, NULL, MEGAMORPHIC); |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 3144 | } |
| 3145 | |
| 3146 | |
| 3147 | MaybeObject* KeyedStoreStubCompiler::CompileStoreField(JSObject* object, |
| 3148 | int index, |
| 3149 | Map* transition, |
| 3150 | String* name) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3151 | // ----------- S t a t e ------------- |
| 3152 | // -- a0 : value |
| 3153 | // -- a1 : key |
| 3154 | // -- a2 : receiver |
| 3155 | // -- ra : return address |
| 3156 | // ----------------------------------- |
| 3157 | |
| 3158 | Label miss; |
| 3159 | |
| 3160 | Counters* counters = masm()->isolate()->counters(); |
| 3161 | __ IncrementCounter(counters->keyed_store_field(), 1, a3, t0); |
| 3162 | |
| 3163 | // Check that the name has not changed. |
| 3164 | __ Branch(&miss, ne, a1, Operand(Handle<String>(name))); |
| 3165 | |
| 3166 | // a3 is used as scratch register. a1 and a2 keep their values if a jump to |
| 3167 | // the miss label is generated. |
| 3168 | GenerateStoreField(masm(), |
| 3169 | object, |
| 3170 | index, |
| 3171 | transition, |
| 3172 | a2, a1, a3, |
| 3173 | &miss); |
| 3174 | __ bind(&miss); |
| 3175 | |
| 3176 | __ DecrementCounter(counters->keyed_store_field(), 1, a3, t0); |
| 3177 | Handle<Code> ic = masm()->isolate()->builtins()->KeyedStoreIC_Miss(); |
| 3178 | __ Jump(ic, RelocInfo::CODE_TARGET); |
| 3179 | |
| 3180 | // Return the generated code. |
| 3181 | return GetCode(transition == NULL ? FIELD : MAP_TRANSITION, name); |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 3182 | } |
| 3183 | |
| 3184 | |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 3185 | MaybeObject* KeyedStoreStubCompiler::CompileStoreElement(Map* receiver_map) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3186 | // ----------- S t a t e ------------- |
| 3187 | // -- a0 : value |
| 3188 | // -- a1 : key |
| 3189 | // -- a2 : receiver |
| 3190 | // -- ra : return address |
| 3191 | // -- a3 : scratch |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3192 | // ----------------------------------- |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 3193 | Code* stub; |
sgjesse@chromium.org | 6db8871 | 2011-07-11 11:41:22 +0000 | [diff] [blame] | 3194 | JSObject::ElementsKind elements_kind = receiver_map->elements_kind(); |
| 3195 | bool is_js_array = receiver_map->instance_type() == JS_ARRAY_TYPE; |
| 3196 | MaybeObject* maybe_stub = |
| 3197 | KeyedStoreElementStub(is_js_array, elements_kind).TryGetCode(); |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 3198 | if (!maybe_stub->To(&stub)) return maybe_stub; |
| 3199 | __ DispatchMap(a2, |
| 3200 | a3, |
| 3201 | Handle<Map>(receiver_map), |
| 3202 | Handle<Code>(stub), |
| 3203 | DO_SMI_CHECK); |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3204 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 3205 | Handle<Code> ic = isolate()->builtins()->KeyedStoreIC_Miss(); |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3206 | __ Jump(ic, RelocInfo::CODE_TARGET); |
| 3207 | |
| 3208 | // Return the generated code. |
| 3209 | return GetCode(NORMAL, NULL); |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 3210 | } |
| 3211 | |
| 3212 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 3213 | MaybeObject* KeyedStoreStubCompiler::CompileStoreMegamorphic( |
| 3214 | MapList* receiver_maps, |
| 3215 | CodeList* handler_ics) { |
| 3216 | // ----------- S t a t e ------------- |
| 3217 | // -- a0 : value |
| 3218 | // -- a1 : key |
| 3219 | // -- a2 : receiver |
| 3220 | // -- ra : return address |
| 3221 | // -- a3 : scratch |
| 3222 | // ----------------------------------- |
| 3223 | Label miss; |
| 3224 | __ JumpIfSmi(a2, &miss); |
| 3225 | |
| 3226 | int receiver_count = receiver_maps->length(); |
| 3227 | __ lw(a3, FieldMemOperand(a2, HeapObject::kMapOffset)); |
| 3228 | for (int current = 0; current < receiver_count; ++current) { |
| 3229 | Handle<Map> map(receiver_maps->at(current)); |
| 3230 | Handle<Code> code(handler_ics->at(current)); |
| 3231 | __ Jump(code, RelocInfo::CODE_TARGET, eq, a3, Operand(map)); |
| 3232 | } |
| 3233 | |
| 3234 | __ bind(&miss); |
| 3235 | Handle<Code> miss_ic = isolate()->builtins()->KeyedStoreIC_Miss(); |
| 3236 | __ Jump(miss_ic, RelocInfo::CODE_TARGET); |
| 3237 | |
| 3238 | // Return the generated code. |
| 3239 | return GetCode(NORMAL, NULL, MEGAMORPHIC); |
| 3240 | } |
| 3241 | |
| 3242 | |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 3243 | MaybeObject* ConstructStubCompiler::CompileConstructStub(JSFunction* function) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3244 | // a0 : argc |
| 3245 | // a1 : constructor |
| 3246 | // ra : return address |
| 3247 | // [sp] : last argument |
| 3248 | Label generic_stub_call; |
| 3249 | |
| 3250 | // Use t7 for holding undefined which is used in several places below. |
| 3251 | __ LoadRoot(t7, Heap::kUndefinedValueRootIndex); |
| 3252 | |
| 3253 | #ifdef ENABLE_DEBUGGER_SUPPORT |
| 3254 | // Check to see whether there are any break points in the function code. If |
| 3255 | // there are jump to the generic constructor stub which calls the actual |
| 3256 | // code for the function thereby hitting the break points. |
| 3257 | __ lw(t5, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset)); |
| 3258 | __ lw(a2, FieldMemOperand(t5, SharedFunctionInfo::kDebugInfoOffset)); |
| 3259 | __ Branch(&generic_stub_call, ne, a2, Operand(t7)); |
| 3260 | #endif |
| 3261 | |
| 3262 | // Load the initial map and verify that it is in fact a map. |
| 3263 | // a1: constructor function |
| 3264 | // t7: undefined |
| 3265 | __ lw(a2, FieldMemOperand(a1, JSFunction::kPrototypeOrInitialMapOffset)); |
| 3266 | __ And(t0, a2, Operand(kSmiTagMask)); |
| 3267 | __ Branch(&generic_stub_call, eq, t0, Operand(zero_reg)); |
| 3268 | __ GetObjectType(a2, a3, t0); |
| 3269 | __ Branch(&generic_stub_call, ne, t0, Operand(MAP_TYPE)); |
| 3270 | |
| 3271 | #ifdef DEBUG |
| 3272 | // Cannot construct functions this way. |
| 3273 | // a0: argc |
| 3274 | // a1: constructor function |
| 3275 | // a2: initial map |
| 3276 | // t7: undefined |
| 3277 | __ lbu(a3, FieldMemOperand(a2, Map::kInstanceTypeOffset)); |
| 3278 | __ Check(ne, "Function constructed by construct stub.", |
| 3279 | a3, Operand(JS_FUNCTION_TYPE)); |
| 3280 | #endif |
| 3281 | |
| 3282 | // Now allocate the JSObject in new space. |
| 3283 | // a0: argc |
| 3284 | // a1: constructor function |
| 3285 | // a2: initial map |
| 3286 | // t7: undefined |
| 3287 | __ lbu(a3, FieldMemOperand(a2, Map::kInstanceSizeOffset)); |
| 3288 | __ AllocateInNewSpace(a3, |
| 3289 | t4, |
| 3290 | t5, |
| 3291 | t6, |
| 3292 | &generic_stub_call, |
| 3293 | SIZE_IN_WORDS); |
| 3294 | |
| 3295 | // Allocated the JSObject, now initialize the fields. Map is set to initial |
| 3296 | // map and properties and elements are set to empty fixed array. |
| 3297 | // a0: argc |
| 3298 | // a1: constructor function |
| 3299 | // a2: initial map |
| 3300 | // a3: object size (in words) |
| 3301 | // t4: JSObject (not tagged) |
| 3302 | // t7: undefined |
| 3303 | __ LoadRoot(t6, Heap::kEmptyFixedArrayRootIndex); |
| 3304 | __ mov(t5, t4); |
| 3305 | __ sw(a2, MemOperand(t5, JSObject::kMapOffset)); |
| 3306 | __ sw(t6, MemOperand(t5, JSObject::kPropertiesOffset)); |
| 3307 | __ sw(t6, MemOperand(t5, JSObject::kElementsOffset)); |
| 3308 | __ Addu(t5, t5, Operand(3 * kPointerSize)); |
| 3309 | ASSERT_EQ(0 * kPointerSize, JSObject::kMapOffset); |
| 3310 | ASSERT_EQ(1 * kPointerSize, JSObject::kPropertiesOffset); |
| 3311 | ASSERT_EQ(2 * kPointerSize, JSObject::kElementsOffset); |
| 3312 | |
| 3313 | |
| 3314 | // Calculate the location of the first argument. The stack contains only the |
| 3315 | // argc arguments. |
| 3316 | __ sll(a1, a0, kPointerSizeLog2); |
| 3317 | __ Addu(a1, a1, sp); |
| 3318 | |
| 3319 | // Fill all the in-object properties with undefined. |
| 3320 | // a0: argc |
| 3321 | // a1: first argument |
| 3322 | // a3: object size (in words) |
| 3323 | // t4: JSObject (not tagged) |
| 3324 | // t5: First in-object property of JSObject (not tagged) |
| 3325 | // t7: undefined |
| 3326 | // Fill the initialized properties with a constant value or a passed argument |
| 3327 | // depending on the this.x = ...; assignment in the function. |
| 3328 | SharedFunctionInfo* shared = function->shared(); |
| 3329 | for (int i = 0; i < shared->this_property_assignments_count(); i++) { |
| 3330 | if (shared->IsThisPropertyAssignmentArgument(i)) { |
| 3331 | Label not_passed, next; |
| 3332 | // Check if the argument assigned to the property is actually passed. |
| 3333 | int arg_number = shared->GetThisPropertyAssignmentArgument(i); |
| 3334 | __ Branch(¬_passed, less_equal, a0, Operand(arg_number)); |
| 3335 | // Argument passed - find it on the stack. |
| 3336 | __ lw(a2, MemOperand(a1, (arg_number + 1) * -kPointerSize)); |
| 3337 | __ sw(a2, MemOperand(t5)); |
| 3338 | __ Addu(t5, t5, kPointerSize); |
| 3339 | __ jmp(&next); |
| 3340 | __ bind(¬_passed); |
| 3341 | // Set the property to undefined. |
| 3342 | __ sw(t7, MemOperand(t5)); |
| 3343 | __ Addu(t5, t5, Operand(kPointerSize)); |
| 3344 | __ bind(&next); |
| 3345 | } else { |
| 3346 | // Set the property to the constant value. |
| 3347 | Handle<Object> constant(shared->GetThisPropertyAssignmentConstant(i)); |
| 3348 | __ li(a2, Operand(constant)); |
| 3349 | __ sw(a2, MemOperand(t5)); |
| 3350 | __ Addu(t5, t5, kPointerSize); |
| 3351 | } |
| 3352 | } |
| 3353 | |
| 3354 | // Fill the unused in-object property fields with undefined. |
| 3355 | ASSERT(function->has_initial_map()); |
| 3356 | for (int i = shared->this_property_assignments_count(); |
| 3357 | i < function->initial_map()->inobject_properties(); |
| 3358 | i++) { |
| 3359 | __ sw(t7, MemOperand(t5)); |
| 3360 | __ Addu(t5, t5, kPointerSize); |
| 3361 | } |
| 3362 | |
| 3363 | // a0: argc |
| 3364 | // t4: JSObject (not tagged) |
| 3365 | // Move argc to a1 and the JSObject to return to v0 and tag it. |
| 3366 | __ mov(a1, a0); |
| 3367 | __ mov(v0, t4); |
| 3368 | __ Or(v0, v0, Operand(kHeapObjectTag)); |
| 3369 | |
| 3370 | // v0: JSObject |
| 3371 | // a1: argc |
| 3372 | // Remove caller arguments and receiver from the stack and return. |
| 3373 | __ sll(t0, a1, kPointerSizeLog2); |
| 3374 | __ Addu(sp, sp, t0); |
| 3375 | __ Addu(sp, sp, Operand(kPointerSize)); |
| 3376 | Counters* counters = masm()->isolate()->counters(); |
| 3377 | __ IncrementCounter(counters->constructed_objects(), 1, a1, a2); |
| 3378 | __ IncrementCounter(counters->constructed_objects_stub(), 1, a1, a2); |
| 3379 | __ Ret(); |
| 3380 | |
| 3381 | // Jump to the generic stub in case the specialized code cannot handle the |
| 3382 | // construction. |
| 3383 | __ bind(&generic_stub_call); |
| 3384 | Handle<Code> generic_construct_stub = |
| 3385 | masm()->isolate()->builtins()->JSConstructStubGeneric(); |
| 3386 | __ Jump(generic_construct_stub, RelocInfo::CODE_TARGET); |
| 3387 | |
| 3388 | // Return the generated code. |
| 3389 | return GetCode(); |
| 3390 | } |
| 3391 | |
| 3392 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 3393 | #undef __ |
| 3394 | #define __ ACCESS_MASM(masm) |
| 3395 | |
| 3396 | |
sgjesse@chromium.org | 6db8871 | 2011-07-11 11:41:22 +0000 | [diff] [blame] | 3397 | void KeyedLoadStubCompiler::GenerateLoadDictionaryElement( |
| 3398 | MacroAssembler* masm) { |
| 3399 | // ---------- S t a t e -------------- |
| 3400 | // -- ra : return address |
| 3401 | // -- a0 : key |
| 3402 | // -- a1 : receiver |
| 3403 | // ----------------------------------- |
| 3404 | Label slow, miss_force_generic; |
| 3405 | |
| 3406 | Register key = a0; |
| 3407 | Register receiver = a1; |
| 3408 | |
| 3409 | __ JumpIfNotSmi(key, &miss_force_generic); |
| 3410 | __ lw(t0, FieldMemOperand(receiver, JSObject::kElementsOffset)); |
| 3411 | __ sra(a2, a0, kSmiTagSize); |
| 3412 | __ LoadFromNumberDictionary(&slow, t0, a0, v0, a2, a3, t1); |
| 3413 | __ Ret(); |
| 3414 | |
| 3415 | // Slow case, key and receiver still in a0 and a1. |
| 3416 | __ bind(&slow); |
| 3417 | __ IncrementCounter( |
| 3418 | masm->isolate()->counters()->keyed_load_external_array_slow(), |
| 3419 | 1, a2, a3); |
| 3420 | // Entry registers are intact. |
| 3421 | // ---------- S t a t e -------------- |
| 3422 | // -- ra : return address |
| 3423 | // -- a0 : key |
| 3424 | // -- a1 : receiver |
| 3425 | // ----------------------------------- |
| 3426 | Handle<Code> slow_ic = |
| 3427 | masm->isolate()->builtins()->KeyedLoadIC_Slow(); |
| 3428 | __ Jump(slow_ic, RelocInfo::CODE_TARGET); |
| 3429 | |
| 3430 | // Miss case, call the runtime. |
| 3431 | __ bind(&miss_force_generic); |
| 3432 | |
| 3433 | // ---------- S t a t e -------------- |
| 3434 | // -- ra : return address |
| 3435 | // -- a0 : key |
| 3436 | // -- a1 : receiver |
| 3437 | // ----------------------------------- |
| 3438 | |
| 3439 | Handle<Code> miss_ic = |
| 3440 | masm->isolate()->builtins()->KeyedLoadIC_MissForceGeneric(); |
| 3441 | __ Jump(miss_ic, RelocInfo::CODE_TARGET); |
| 3442 | } |
| 3443 | |
| 3444 | |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 3445 | static bool IsElementTypeSigned(JSObject::ElementsKind elements_kind) { |
| 3446 | switch (elements_kind) { |
| 3447 | case JSObject::EXTERNAL_BYTE_ELEMENTS: |
| 3448 | case JSObject::EXTERNAL_SHORT_ELEMENTS: |
| 3449 | case JSObject::EXTERNAL_INT_ELEMENTS: |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3450 | return true; |
| 3451 | |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 3452 | case JSObject::EXTERNAL_UNSIGNED_BYTE_ELEMENTS: |
| 3453 | case JSObject::EXTERNAL_UNSIGNED_SHORT_ELEMENTS: |
| 3454 | case JSObject::EXTERNAL_UNSIGNED_INT_ELEMENTS: |
| 3455 | case JSObject::EXTERNAL_PIXEL_ELEMENTS: |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3456 | return false; |
| 3457 | |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 3458 | case JSObject::EXTERNAL_FLOAT_ELEMENTS: |
| 3459 | case JSObject::EXTERNAL_DOUBLE_ELEMENTS: |
| 3460 | case JSObject::FAST_ELEMENTS: |
| 3461 | case JSObject::FAST_DOUBLE_ELEMENTS: |
| 3462 | case JSObject::DICTIONARY_ELEMENTS: |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 3463 | case JSObject::NON_STRICT_ARGUMENTS_ELEMENTS: |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3464 | UNREACHABLE(); |
| 3465 | return false; |
| 3466 | } |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 3467 | return false; |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 3468 | } |
| 3469 | |
| 3470 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 3471 | void KeyedLoadStubCompiler::GenerateLoadExternalArray( |
| 3472 | MacroAssembler* masm, |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 3473 | JSObject::ElementsKind elements_kind) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3474 | // ---------- S t a t e -------------- |
| 3475 | // -- ra : return address |
| 3476 | // -- a0 : key |
| 3477 | // -- a1 : receiver |
| 3478 | // ----------------------------------- |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 3479 | Label miss_force_generic, slow, failed_allocation; |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3480 | |
| 3481 | Register key = a0; |
| 3482 | Register receiver = a1; |
| 3483 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 3484 | // This stub is meant to be tail-jumped to, the receiver must already |
| 3485 | // have been verified by the caller to not be a smi. |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3486 | |
| 3487 | // Check that the key is a smi. |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 3488 | __ JumpIfNotSmi(key, &miss_force_generic); |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3489 | |
| 3490 | __ lw(a3, FieldMemOperand(receiver, JSObject::kElementsOffset)); |
| 3491 | // a3: elements array |
| 3492 | |
| 3493 | // Check that the index is in range. |
| 3494 | __ lw(t1, FieldMemOperand(a3, ExternalArray::kLengthOffset)); |
| 3495 | __ sra(t2, key, kSmiTagSize); |
| 3496 | // Unsigned comparison catches both negative and too-large values. |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 3497 | __ Branch(&miss_force_generic, Ugreater_equal, key, Operand(t1)); |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3498 | |
| 3499 | __ lw(a3, FieldMemOperand(a3, ExternalArray::kExternalPointerOffset)); |
| 3500 | // a3: base pointer of external storage |
| 3501 | |
| 3502 | // We are not untagging smi key and instead work with it |
| 3503 | // as if it was premultiplied by 2. |
| 3504 | ASSERT((kSmiTag == 0) && (kSmiTagSize == 1)); |
| 3505 | |
| 3506 | Register value = a2; |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 3507 | switch (elements_kind) { |
| 3508 | case JSObject::EXTERNAL_BYTE_ELEMENTS: |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3509 | __ srl(t2, key, 1); |
| 3510 | __ addu(t3, a3, t2); |
| 3511 | __ lb(value, MemOperand(t3, 0)); |
| 3512 | break; |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 3513 | case JSObject::EXTERNAL_PIXEL_ELEMENTS: |
| 3514 | case JSObject::EXTERNAL_UNSIGNED_BYTE_ELEMENTS: |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3515 | __ srl(t2, key, 1); |
| 3516 | __ addu(t3, a3, t2); |
| 3517 | __ lbu(value, MemOperand(t3, 0)); |
| 3518 | break; |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 3519 | case JSObject::EXTERNAL_SHORT_ELEMENTS: |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3520 | __ addu(t3, a3, key); |
| 3521 | __ lh(value, MemOperand(t3, 0)); |
| 3522 | break; |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 3523 | case JSObject::EXTERNAL_UNSIGNED_SHORT_ELEMENTS: |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3524 | __ addu(t3, a3, key); |
| 3525 | __ lhu(value, MemOperand(t3, 0)); |
| 3526 | break; |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 3527 | case JSObject::EXTERNAL_INT_ELEMENTS: |
| 3528 | case JSObject::EXTERNAL_UNSIGNED_INT_ELEMENTS: |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3529 | __ sll(t2, key, 1); |
| 3530 | __ addu(t3, a3, t2); |
| 3531 | __ lw(value, MemOperand(t3, 0)); |
| 3532 | break; |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 3533 | case JSObject::EXTERNAL_FLOAT_ELEMENTS: |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3534 | __ sll(t3, t2, 2); |
| 3535 | __ addu(t3, a3, t3); |
| 3536 | if (CpuFeatures::IsSupported(FPU)) { |
| 3537 | CpuFeatures::Scope scope(FPU); |
| 3538 | __ lwc1(f0, MemOperand(t3, 0)); |
| 3539 | } else { |
| 3540 | __ lw(value, MemOperand(t3, 0)); |
| 3541 | } |
| 3542 | break; |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 3543 | case JSObject::EXTERNAL_DOUBLE_ELEMENTS: |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3544 | __ sll(t2, key, 2); |
| 3545 | __ addu(t3, a3, t2); |
| 3546 | if (CpuFeatures::IsSupported(FPU)) { |
| 3547 | CpuFeatures::Scope scope(FPU); |
| 3548 | __ ldc1(f0, MemOperand(t3, 0)); |
| 3549 | } else { |
| 3550 | // t3: pointer to the beginning of the double we want to load. |
| 3551 | __ lw(a2, MemOperand(t3, 0)); |
| 3552 | __ lw(a3, MemOperand(t3, Register::kSizeInBytes)); |
| 3553 | } |
| 3554 | break; |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 3555 | case JSObject::FAST_ELEMENTS: |
| 3556 | case JSObject::FAST_DOUBLE_ELEMENTS: |
| 3557 | case JSObject::DICTIONARY_ELEMENTS: |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 3558 | case JSObject::NON_STRICT_ARGUMENTS_ELEMENTS: |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3559 | UNREACHABLE(); |
| 3560 | break; |
| 3561 | } |
| 3562 | |
| 3563 | // For integer array types: |
| 3564 | // a2: value |
| 3565 | // For float array type: |
| 3566 | // f0: value (if FPU is supported) |
| 3567 | // a2: value (if FPU is not supported) |
| 3568 | // For double array type: |
| 3569 | // f0: value (if FPU is supported) |
| 3570 | // a2/a3: value (if FPU is not supported) |
| 3571 | |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 3572 | if (elements_kind == JSObject::EXTERNAL_INT_ELEMENTS) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3573 | // For the Int and UnsignedInt array types, we need to see whether |
| 3574 | // the value can be represented in a Smi. If not, we need to convert |
| 3575 | // it to a HeapNumber. |
| 3576 | Label box_int; |
| 3577 | __ Subu(t3, value, Operand(0xC0000000)); // Non-smi value gives neg result. |
| 3578 | __ Branch(&box_int, lt, t3, Operand(zero_reg)); |
| 3579 | // Tag integer as smi and return it. |
| 3580 | __ sll(v0, value, kSmiTagSize); |
| 3581 | __ Ret(); |
| 3582 | |
| 3583 | __ bind(&box_int); |
| 3584 | // Allocate a HeapNumber for the result and perform int-to-double |
| 3585 | // conversion. |
| 3586 | // The arm version uses a temporary here to save r0, but we don't need to |
| 3587 | // (a0 is not modified). |
| 3588 | __ LoadRoot(t1, Heap::kHeapNumberMapRootIndex); |
| 3589 | __ AllocateHeapNumber(v0, a3, t0, t1, &slow); |
| 3590 | |
| 3591 | if (CpuFeatures::IsSupported(FPU)) { |
| 3592 | CpuFeatures::Scope scope(FPU); |
| 3593 | __ mtc1(value, f0); |
| 3594 | __ cvt_d_w(f0, f0); |
| 3595 | __ sdc1(f0, MemOperand(v0, HeapNumber::kValueOffset - kHeapObjectTag)); |
| 3596 | __ Ret(); |
| 3597 | } else { |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 3598 | Register dst1 = t2; |
| 3599 | Register dst2 = t3; |
| 3600 | FloatingPointHelper::Destination dest = |
| 3601 | FloatingPointHelper::kCoreRegisters; |
| 3602 | FloatingPointHelper::ConvertIntToDouble(masm, |
| 3603 | value, |
| 3604 | dest, |
| 3605 | f0, |
| 3606 | dst1, |
| 3607 | dst2, |
| 3608 | t1, |
| 3609 | f2); |
| 3610 | __ sw(dst1, FieldMemOperand(v0, HeapNumber::kMantissaOffset)); |
| 3611 | __ sw(dst2, FieldMemOperand(v0, HeapNumber::kExponentOffset)); |
| 3612 | __ Ret(); |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3613 | } |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 3614 | } else if (elements_kind == JSObject::EXTERNAL_UNSIGNED_INT_ELEMENTS) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3615 | // The test is different for unsigned int values. Since we need |
| 3616 | // the value to be in the range of a positive smi, we can't |
| 3617 | // handle either of the top two bits being set in the value. |
| 3618 | if (CpuFeatures::IsSupported(FPU)) { |
| 3619 | CpuFeatures::Scope scope(FPU); |
| 3620 | Label pl_box_int; |
| 3621 | __ And(t2, value, Operand(0xC0000000)); |
| 3622 | __ Branch(&pl_box_int, ne, t2, Operand(zero_reg)); |
| 3623 | |
| 3624 | // It can fit in an Smi. |
| 3625 | // Tag integer as smi and return it. |
| 3626 | __ sll(v0, value, kSmiTagSize); |
| 3627 | __ Ret(); |
| 3628 | |
| 3629 | __ bind(&pl_box_int); |
| 3630 | // Allocate a HeapNumber for the result and perform int-to-double |
| 3631 | // conversion. Don't use a0 and a1 as AllocateHeapNumber clobbers all |
| 3632 | // registers - also when jumping due to exhausted young space. |
| 3633 | __ LoadRoot(t6, Heap::kHeapNumberMapRootIndex); |
| 3634 | __ AllocateHeapNumber(v0, t2, t3, t6, &slow); |
| 3635 | |
| 3636 | // This is replaced by a macro: |
| 3637 | // __ mtc1(value, f0); // LS 32-bits. |
| 3638 | // __ mtc1(zero_reg, f1); // MS 32-bits are all zero. |
| 3639 | // __ cvt_d_l(f0, f0); // Use 64 bit conv to get correct unsigned 32-bit. |
| 3640 | |
ricow@chromium.org | 4668a2c | 2011-08-29 10:41:00 +0000 | [diff] [blame^] | 3641 | __ Cvt_d_uw(f0, value, f22); |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3642 | |
| 3643 | __ sdc1(f0, MemOperand(v0, HeapNumber::kValueOffset - kHeapObjectTag)); |
| 3644 | |
| 3645 | __ Ret(); |
| 3646 | } else { |
| 3647 | // Check whether unsigned integer fits into smi. |
| 3648 | Label box_int_0, box_int_1, done; |
| 3649 | __ And(t2, value, Operand(0x80000000)); |
| 3650 | __ Branch(&box_int_0, ne, t2, Operand(zero_reg)); |
| 3651 | __ And(t2, value, Operand(0x40000000)); |
| 3652 | __ Branch(&box_int_1, ne, t2, Operand(zero_reg)); |
| 3653 | |
| 3654 | // Tag integer as smi and return it. |
| 3655 | __ sll(v0, value, kSmiTagSize); |
| 3656 | __ Ret(); |
| 3657 | |
| 3658 | Register hiword = value; // a2. |
| 3659 | Register loword = a3; |
| 3660 | |
| 3661 | __ bind(&box_int_0); |
| 3662 | // Integer does not have leading zeros. |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 3663 | GenerateUInt2Double(masm, hiword, loword, t0, 0); |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3664 | __ Branch(&done); |
| 3665 | |
| 3666 | __ bind(&box_int_1); |
| 3667 | // Integer has one leading zero. |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 3668 | GenerateUInt2Double(masm, hiword, loword, t0, 1); |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3669 | |
| 3670 | |
| 3671 | __ bind(&done); |
| 3672 | // Integer was converted to double in registers hiword:loword. |
| 3673 | // Wrap it into a HeapNumber. Don't use a0 and a1 as AllocateHeapNumber |
| 3674 | // clobbers all registers - also when jumping due to exhausted young |
| 3675 | // space. |
| 3676 | __ LoadRoot(t6, Heap::kHeapNumberMapRootIndex); |
| 3677 | __ AllocateHeapNumber(t2, t3, t5, t6, &slow); |
| 3678 | |
| 3679 | __ sw(hiword, FieldMemOperand(t2, HeapNumber::kExponentOffset)); |
| 3680 | __ sw(loword, FieldMemOperand(t2, HeapNumber::kMantissaOffset)); |
| 3681 | |
| 3682 | __ mov(v0, t2); |
| 3683 | __ Ret(); |
| 3684 | } |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 3685 | } else if (elements_kind == JSObject::EXTERNAL_FLOAT_ELEMENTS) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3686 | // For the floating-point array type, we need to always allocate a |
| 3687 | // HeapNumber. |
| 3688 | if (CpuFeatures::IsSupported(FPU)) { |
| 3689 | CpuFeatures::Scope scope(FPU); |
| 3690 | // Allocate a HeapNumber for the result. Don't use a0 and a1 as |
| 3691 | // AllocateHeapNumber clobbers all registers - also when jumping due to |
| 3692 | // exhausted young space. |
| 3693 | __ LoadRoot(t6, Heap::kHeapNumberMapRootIndex); |
| 3694 | __ AllocateHeapNumber(v0, t3, t5, t6, &slow); |
| 3695 | // The float (single) value is already in fpu reg f0 (if we use float). |
| 3696 | __ cvt_d_s(f0, f0); |
| 3697 | __ sdc1(f0, MemOperand(v0, HeapNumber::kValueOffset - kHeapObjectTag)); |
| 3698 | __ Ret(); |
| 3699 | } else { |
| 3700 | // Allocate a HeapNumber for the result. Don't use a0 and a1 as |
| 3701 | // AllocateHeapNumber clobbers all registers - also when jumping due to |
| 3702 | // exhausted young space. |
| 3703 | __ LoadRoot(t6, Heap::kHeapNumberMapRootIndex); |
| 3704 | __ AllocateHeapNumber(v0, t3, t5, t6, &slow); |
| 3705 | // FPU is not available, do manual single to double conversion. |
| 3706 | |
| 3707 | // a2: floating point value (binary32). |
| 3708 | // v0: heap number for result |
| 3709 | |
| 3710 | // Extract mantissa to t4. |
| 3711 | __ And(t4, value, Operand(kBinary32MantissaMask)); |
| 3712 | |
| 3713 | // Extract exponent to t5. |
| 3714 | __ srl(t5, value, kBinary32MantissaBits); |
| 3715 | __ And(t5, t5, Operand(kBinary32ExponentMask >> kBinary32MantissaBits)); |
| 3716 | |
| 3717 | Label exponent_rebiased; |
| 3718 | __ Branch(&exponent_rebiased, eq, t5, Operand(zero_reg)); |
| 3719 | |
| 3720 | __ li(t0, 0x7ff); |
| 3721 | __ Xor(t1, t5, Operand(0xFF)); |
| 3722 | __ movz(t5, t0, t1); // Set t5 to 0x7ff only if t5 is equal to 0xff. |
| 3723 | __ Branch(&exponent_rebiased, eq, t0, Operand(0xff)); |
| 3724 | |
| 3725 | // Rebias exponent. |
| 3726 | __ Addu(t5, |
| 3727 | t5, |
| 3728 | Operand(-kBinary32ExponentBias + HeapNumber::kExponentBias)); |
| 3729 | |
| 3730 | __ bind(&exponent_rebiased); |
| 3731 | __ And(a2, value, Operand(kBinary32SignMask)); |
| 3732 | value = no_reg; |
| 3733 | __ sll(t0, t5, HeapNumber::kMantissaBitsInTopWord); |
| 3734 | __ or_(a2, a2, t0); |
| 3735 | |
| 3736 | // Shift mantissa. |
| 3737 | static const int kMantissaShiftForHiWord = |
| 3738 | kBinary32MantissaBits - HeapNumber::kMantissaBitsInTopWord; |
| 3739 | |
| 3740 | static const int kMantissaShiftForLoWord = |
| 3741 | kBitsPerInt - kMantissaShiftForHiWord; |
| 3742 | |
| 3743 | __ srl(t0, t4, kMantissaShiftForHiWord); |
| 3744 | __ or_(a2, a2, t0); |
| 3745 | __ sll(a0, t4, kMantissaShiftForLoWord); |
| 3746 | |
| 3747 | __ sw(a2, FieldMemOperand(v0, HeapNumber::kExponentOffset)); |
| 3748 | __ sw(a0, FieldMemOperand(v0, HeapNumber::kMantissaOffset)); |
| 3749 | __ Ret(); |
| 3750 | } |
| 3751 | |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 3752 | } else if (elements_kind == JSObject::EXTERNAL_DOUBLE_ELEMENTS) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3753 | if (CpuFeatures::IsSupported(FPU)) { |
| 3754 | CpuFeatures::Scope scope(FPU); |
| 3755 | // Allocate a HeapNumber for the result. Don't use a0 and a1 as |
| 3756 | // AllocateHeapNumber clobbers all registers - also when jumping due to |
| 3757 | // exhausted young space. |
| 3758 | __ LoadRoot(t6, Heap::kHeapNumberMapRootIndex); |
| 3759 | __ AllocateHeapNumber(v0, t3, t5, t6, &slow); |
| 3760 | // The double value is already in f0 |
| 3761 | __ sdc1(f0, FieldMemOperand(v0, HeapNumber::kValueOffset)); |
| 3762 | __ Ret(); |
| 3763 | } else { |
| 3764 | // Allocate a HeapNumber for the result. Don't use a0 and a1 as |
| 3765 | // AllocateHeapNumber clobbers all registers - also when jumping due to |
| 3766 | // exhausted young space. |
| 3767 | __ LoadRoot(t6, Heap::kHeapNumberMapRootIndex); |
| 3768 | __ AllocateHeapNumber(v0, t3, t5, t6, &slow); |
| 3769 | |
| 3770 | __ sw(a2, FieldMemOperand(v0, HeapNumber::kMantissaOffset)); |
| 3771 | __ sw(a3, FieldMemOperand(v0, HeapNumber::kExponentOffset)); |
| 3772 | __ Ret(); |
| 3773 | } |
| 3774 | |
| 3775 | } else { |
| 3776 | // Tag integer as smi and return it. |
| 3777 | __ sll(v0, value, kSmiTagSize); |
| 3778 | __ Ret(); |
| 3779 | } |
| 3780 | |
| 3781 | // Slow case, key and receiver still in a0 and a1. |
| 3782 | __ bind(&slow); |
| 3783 | __ IncrementCounter( |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 3784 | masm->isolate()->counters()->keyed_load_external_array_slow(), |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3785 | 1, a2, a3); |
| 3786 | |
| 3787 | // ---------- S t a t e -------------- |
| 3788 | // -- ra : return address |
| 3789 | // -- a0 : key |
| 3790 | // -- a1 : receiver |
| 3791 | // ----------------------------------- |
| 3792 | |
| 3793 | __ Push(a1, a0); |
| 3794 | |
| 3795 | __ TailCallRuntime(Runtime::kKeyedGetProperty, 2, 1); |
| 3796 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 3797 | __ bind(&miss_force_generic); |
| 3798 | Code* stub = masm->isolate()->builtins()->builtin( |
| 3799 | Builtins::kKeyedLoadIC_MissForceGeneric); |
| 3800 | __ Jump(Handle<Code>(stub), RelocInfo::CODE_TARGET); |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 3801 | } |
| 3802 | |
| 3803 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 3804 | void KeyedStoreStubCompiler::GenerateStoreExternalArray( |
| 3805 | MacroAssembler* masm, |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 3806 | JSObject::ElementsKind elements_kind) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3807 | // ---------- S t a t e -------------- |
| 3808 | // -- a0 : value |
| 3809 | // -- a1 : key |
| 3810 | // -- a2 : receiver |
| 3811 | // -- ra : return address |
| 3812 | // ----------------------------------- |
| 3813 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 3814 | Label slow, check_heap_number, miss_force_generic; |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3815 | |
| 3816 | // Register usage. |
| 3817 | Register value = a0; |
| 3818 | Register key = a1; |
| 3819 | Register receiver = a2; |
| 3820 | // a3 mostly holds the elements array or the destination external array. |
| 3821 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 3822 | // This stub is meant to be tail-jumped to, the receiver must already |
| 3823 | // have been verified by the caller to not be a smi. |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3824 | |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 3825 | // Check that the key is a smi. |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 3826 | __ JumpIfNotSmi(key, &miss_force_generic); |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3827 | |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 3828 | __ lw(a3, FieldMemOperand(receiver, JSObject::kElementsOffset)); |
| 3829 | |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3830 | // Check that the index is in range. |
| 3831 | __ SmiUntag(t0, key); |
| 3832 | __ lw(t1, FieldMemOperand(a3, ExternalArray::kLengthOffset)); |
| 3833 | // Unsigned comparison catches both negative and too-large values. |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 3834 | __ Branch(&miss_force_generic, Ugreater_equal, key, Operand(t1)); |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3835 | |
| 3836 | // Handle both smis and HeapNumbers in the fast path. Go to the |
| 3837 | // runtime for all other kinds of values. |
| 3838 | // a3: external array. |
| 3839 | // t0: key (integer). |
| 3840 | |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 3841 | if (elements_kind == JSObject::EXTERNAL_PIXEL_ELEMENTS) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3842 | // Double to pixel conversion is only implemented in the runtime for now. |
| 3843 | __ JumpIfNotSmi(value, &slow); |
| 3844 | } else { |
| 3845 | __ JumpIfNotSmi(value, &check_heap_number); |
| 3846 | } |
| 3847 | __ SmiUntag(t1, value); |
| 3848 | __ lw(a3, FieldMemOperand(a3, ExternalArray::kExternalPointerOffset)); |
| 3849 | |
| 3850 | // a3: base pointer of external storage. |
| 3851 | // t0: key (integer). |
| 3852 | // t1: value (integer). |
| 3853 | |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 3854 | switch (elements_kind) { |
| 3855 | case JSObject::EXTERNAL_PIXEL_ELEMENTS: { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3856 | // Clamp the value to [0..255]. |
| 3857 | // v0 is used as a scratch register here. |
| 3858 | Label done; |
| 3859 | __ li(v0, Operand(255)); |
| 3860 | // Normal branch: nop in delay slot. |
| 3861 | __ Branch(&done, gt, t1, Operand(v0)); |
| 3862 | // Use delay slot in this branch. |
| 3863 | __ Branch(USE_DELAY_SLOT, &done, lt, t1, Operand(zero_reg)); |
| 3864 | __ mov(v0, zero_reg); // In delay slot. |
| 3865 | __ mov(v0, t1); // Value is in range 0..255. |
| 3866 | __ bind(&done); |
| 3867 | __ mov(t1, v0); |
| 3868 | __ addu(t8, a3, t0); |
| 3869 | __ sb(t1, MemOperand(t8, 0)); |
| 3870 | } |
| 3871 | break; |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 3872 | case JSObject::EXTERNAL_BYTE_ELEMENTS: |
| 3873 | case JSObject::EXTERNAL_UNSIGNED_BYTE_ELEMENTS: |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3874 | __ addu(t8, a3, t0); |
| 3875 | __ sb(t1, MemOperand(t8, 0)); |
| 3876 | break; |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 3877 | case JSObject::EXTERNAL_SHORT_ELEMENTS: |
| 3878 | case JSObject::EXTERNAL_UNSIGNED_SHORT_ELEMENTS: |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3879 | __ sll(t8, t0, 1); |
| 3880 | __ addu(t8, a3, t8); |
| 3881 | __ sh(t1, MemOperand(t8, 0)); |
| 3882 | break; |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 3883 | case JSObject::EXTERNAL_INT_ELEMENTS: |
| 3884 | case JSObject::EXTERNAL_UNSIGNED_INT_ELEMENTS: |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3885 | __ sll(t8, t0, 2); |
| 3886 | __ addu(t8, a3, t8); |
| 3887 | __ sw(t1, MemOperand(t8, 0)); |
| 3888 | break; |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 3889 | case JSObject::EXTERNAL_FLOAT_ELEMENTS: |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3890 | // Perform int-to-float conversion and store to memory. |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 3891 | StoreIntAsFloat(masm, a3, t0, t1, t2, t3, t4); |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3892 | break; |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 3893 | case JSObject::EXTERNAL_DOUBLE_ELEMENTS: |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3894 | __ sll(t8, t0, 3); |
| 3895 | __ addu(a3, a3, t8); |
| 3896 | // a3: effective address of the double element |
| 3897 | FloatingPointHelper::Destination destination; |
| 3898 | if (CpuFeatures::IsSupported(FPU)) { |
| 3899 | destination = FloatingPointHelper::kFPURegisters; |
| 3900 | } else { |
| 3901 | destination = FloatingPointHelper::kCoreRegisters; |
| 3902 | } |
| 3903 | FloatingPointHelper::ConvertIntToDouble( |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 3904 | masm, t1, destination, |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3905 | f0, t2, t3, // These are: double_dst, dst1, dst2. |
| 3906 | t0, f2); // These are: scratch2, single_scratch. |
| 3907 | if (destination == FloatingPointHelper::kFPURegisters) { |
| 3908 | CpuFeatures::Scope scope(FPU); |
| 3909 | __ sdc1(f0, MemOperand(a3, 0)); |
| 3910 | } else { |
| 3911 | __ sw(t2, MemOperand(a3, 0)); |
| 3912 | __ sw(t3, MemOperand(a3, Register::kSizeInBytes)); |
| 3913 | } |
| 3914 | break; |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 3915 | case JSObject::FAST_ELEMENTS: |
| 3916 | case JSObject::FAST_DOUBLE_ELEMENTS: |
| 3917 | case JSObject::DICTIONARY_ELEMENTS: |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 3918 | case JSObject::NON_STRICT_ARGUMENTS_ELEMENTS: |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3919 | UNREACHABLE(); |
| 3920 | break; |
| 3921 | } |
| 3922 | |
| 3923 | // Entry registers are intact, a0 holds the value which is the return value. |
| 3924 | __ mov(v0, value); |
| 3925 | __ Ret(); |
| 3926 | |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 3927 | if (elements_kind != JSObject::EXTERNAL_PIXEL_ELEMENTS) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3928 | // a3: external array. |
| 3929 | // t0: index (integer). |
| 3930 | __ bind(&check_heap_number); |
| 3931 | __ GetObjectType(value, t1, t2); |
| 3932 | __ Branch(&slow, ne, t2, Operand(HEAP_NUMBER_TYPE)); |
| 3933 | |
| 3934 | __ lw(a3, FieldMemOperand(a3, ExternalArray::kExternalPointerOffset)); |
| 3935 | |
| 3936 | // a3: base pointer of external storage. |
| 3937 | // t0: key (integer). |
| 3938 | |
| 3939 | // The WebGL specification leaves the behavior of storing NaN and |
| 3940 | // +/-Infinity into integer arrays basically undefined. For more |
| 3941 | // reproducible behavior, convert these to zero. |
| 3942 | |
| 3943 | if (CpuFeatures::IsSupported(FPU)) { |
| 3944 | CpuFeatures::Scope scope(FPU); |
| 3945 | |
| 3946 | __ ldc1(f0, FieldMemOperand(a0, HeapNumber::kValueOffset)); |
| 3947 | |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 3948 | if (elements_kind == JSObject::EXTERNAL_FLOAT_ELEMENTS) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3949 | __ cvt_s_d(f0, f0); |
| 3950 | __ sll(t8, t0, 2); |
| 3951 | __ addu(t8, a3, t8); |
| 3952 | __ swc1(f0, MemOperand(t8, 0)); |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 3953 | } else if (elements_kind == JSObject::EXTERNAL_DOUBLE_ELEMENTS) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3954 | __ sll(t8, t0, 3); |
| 3955 | __ addu(t8, a3, t8); |
| 3956 | __ sdc1(f0, MemOperand(t8, 0)); |
| 3957 | } else { |
erik.corry@gmail.com | d6076d9 | 2011-06-06 09:39:18 +0000 | [diff] [blame] | 3958 | __ EmitECMATruncate(t3, f0, f2, t2, t1, t5); |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3959 | |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 3960 | switch (elements_kind) { |
| 3961 | case JSObject::EXTERNAL_BYTE_ELEMENTS: |
| 3962 | case JSObject::EXTERNAL_UNSIGNED_BYTE_ELEMENTS: |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3963 | __ addu(t8, a3, t0); |
| 3964 | __ sb(t3, MemOperand(t8, 0)); |
| 3965 | break; |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 3966 | case JSObject::EXTERNAL_SHORT_ELEMENTS: |
| 3967 | case JSObject::EXTERNAL_UNSIGNED_SHORT_ELEMENTS: |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3968 | __ sll(t8, t0, 1); |
| 3969 | __ addu(t8, a3, t8); |
| 3970 | __ sh(t3, MemOperand(t8, 0)); |
| 3971 | break; |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 3972 | case JSObject::EXTERNAL_INT_ELEMENTS: |
| 3973 | case JSObject::EXTERNAL_UNSIGNED_INT_ELEMENTS: |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3974 | __ sll(t8, t0, 2); |
| 3975 | __ addu(t8, a3, t8); |
| 3976 | __ sw(t3, MemOperand(t8, 0)); |
| 3977 | break; |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 3978 | case JSObject::EXTERNAL_PIXEL_ELEMENTS: |
| 3979 | case JSObject::EXTERNAL_FLOAT_ELEMENTS: |
| 3980 | case JSObject::EXTERNAL_DOUBLE_ELEMENTS: |
| 3981 | case JSObject::FAST_ELEMENTS: |
| 3982 | case JSObject::FAST_DOUBLE_ELEMENTS: |
| 3983 | case JSObject::DICTIONARY_ELEMENTS: |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 3984 | case JSObject::NON_STRICT_ARGUMENTS_ELEMENTS: |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3985 | UNREACHABLE(); |
| 3986 | break; |
| 3987 | } |
| 3988 | } |
| 3989 | |
| 3990 | // Entry registers are intact, a0 holds the value |
| 3991 | // which is the return value. |
| 3992 | __ mov(v0, value); |
| 3993 | __ Ret(); |
| 3994 | } else { |
| 3995 | // FPU is not available, do manual conversions. |
| 3996 | |
| 3997 | __ lw(t3, FieldMemOperand(value, HeapNumber::kExponentOffset)); |
| 3998 | __ lw(t4, FieldMemOperand(value, HeapNumber::kMantissaOffset)); |
| 3999 | |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 4000 | if (elements_kind == JSObject::EXTERNAL_FLOAT_ELEMENTS) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 4001 | Label done, nan_or_infinity_or_zero; |
| 4002 | static const int kMantissaInHiWordShift = |
| 4003 | kBinary32MantissaBits - HeapNumber::kMantissaBitsInTopWord; |
| 4004 | |
| 4005 | static const int kMantissaInLoWordShift = |
| 4006 | kBitsPerInt - kMantissaInHiWordShift; |
| 4007 | |
| 4008 | // Test for all special exponent values: zeros, subnormal numbers, NaNs |
| 4009 | // and infinities. All these should be converted to 0. |
| 4010 | __ li(t5, HeapNumber::kExponentMask); |
| 4011 | __ and_(t6, t3, t5); |
| 4012 | __ Branch(&nan_or_infinity_or_zero, eq, t6, Operand(zero_reg)); |
| 4013 | |
| 4014 | __ xor_(t1, t6, t5); |
| 4015 | __ li(t2, kBinary32ExponentMask); |
| 4016 | __ movz(t6, t2, t1); // Only if t6 is equal to t5. |
| 4017 | __ Branch(&nan_or_infinity_or_zero, eq, t6, Operand(t5)); |
| 4018 | |
| 4019 | // Rebias exponent. |
| 4020 | __ srl(t6, t6, HeapNumber::kExponentShift); |
| 4021 | __ Addu(t6, |
| 4022 | t6, |
| 4023 | Operand(kBinary32ExponentBias - HeapNumber::kExponentBias)); |
| 4024 | |
| 4025 | __ li(t1, Operand(kBinary32MaxExponent)); |
| 4026 | __ Slt(t1, t1, t6); |
| 4027 | __ And(t2, t3, Operand(HeapNumber::kSignMask)); |
| 4028 | __ Or(t2, t2, Operand(kBinary32ExponentMask)); |
| 4029 | __ movn(t3, t2, t1); // Only if t6 is gt kBinary32MaxExponent. |
| 4030 | __ Branch(&done, gt, t6, Operand(kBinary32MaxExponent)); |
| 4031 | |
| 4032 | __ Slt(t1, t6, Operand(kBinary32MinExponent)); |
| 4033 | __ And(t2, t3, Operand(HeapNumber::kSignMask)); |
| 4034 | __ movn(t3, t2, t1); // Only if t6 is lt kBinary32MinExponent. |
| 4035 | __ Branch(&done, lt, t6, Operand(kBinary32MinExponent)); |
| 4036 | |
| 4037 | __ And(t7, t3, Operand(HeapNumber::kSignMask)); |
| 4038 | __ And(t3, t3, Operand(HeapNumber::kMantissaMask)); |
| 4039 | __ sll(t3, t3, kMantissaInHiWordShift); |
| 4040 | __ or_(t7, t7, t3); |
| 4041 | __ srl(t4, t4, kMantissaInLoWordShift); |
| 4042 | __ or_(t7, t7, t4); |
| 4043 | __ sll(t6, t6, kBinary32ExponentShift); |
| 4044 | __ or_(t3, t7, t6); |
| 4045 | |
| 4046 | __ bind(&done); |
| 4047 | __ sll(t9, a1, 2); |
| 4048 | __ addu(t9, a2, t9); |
| 4049 | __ sw(t3, MemOperand(t9, 0)); |
| 4050 | |
| 4051 | // Entry registers are intact, a0 holds the value which is the return |
| 4052 | // value. |
| 4053 | __ mov(v0, value); |
| 4054 | __ Ret(); |
| 4055 | |
| 4056 | __ bind(&nan_or_infinity_or_zero); |
| 4057 | __ And(t7, t3, Operand(HeapNumber::kSignMask)); |
| 4058 | __ And(t3, t3, Operand(HeapNumber::kMantissaMask)); |
| 4059 | __ or_(t6, t6, t7); |
| 4060 | __ sll(t3, t3, kMantissaInHiWordShift); |
| 4061 | __ or_(t6, t6, t3); |
| 4062 | __ srl(t4, t4, kMantissaInLoWordShift); |
| 4063 | __ or_(t3, t6, t4); |
| 4064 | __ Branch(&done); |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 4065 | } else if (elements_kind == JSObject::EXTERNAL_DOUBLE_ELEMENTS) { |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 4066 | __ sll(t8, t0, 3); |
| 4067 | __ addu(t8, a3, t8); |
| 4068 | // t8: effective address of destination element. |
| 4069 | __ sw(t4, MemOperand(t8, 0)); |
| 4070 | __ sw(t3, MemOperand(t8, Register::kSizeInBytes)); |
| 4071 | __ Ret(); |
| 4072 | } else { |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 4073 | bool is_signed_type = IsElementTypeSigned(elements_kind); |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 4074 | int meaningfull_bits = is_signed_type ? (kBitsPerInt - 1) : kBitsPerInt; |
| 4075 | int32_t min_value = is_signed_type ? 0x80000000 : 0x00000000; |
| 4076 | |
| 4077 | Label done, sign; |
| 4078 | |
| 4079 | // Test for all special exponent values: zeros, subnormal numbers, NaNs |
| 4080 | // and infinities. All these should be converted to 0. |
| 4081 | __ li(t5, HeapNumber::kExponentMask); |
| 4082 | __ and_(t6, t3, t5); |
| 4083 | __ movz(t3, zero_reg, t6); // Only if t6 is equal to zero. |
| 4084 | __ Branch(&done, eq, t6, Operand(zero_reg)); |
| 4085 | |
| 4086 | __ xor_(t2, t6, t5); |
| 4087 | __ movz(t3, zero_reg, t2); // Only if t6 is equal to t5. |
| 4088 | __ Branch(&done, eq, t6, Operand(t5)); |
| 4089 | |
| 4090 | // Unbias exponent. |
| 4091 | __ srl(t6, t6, HeapNumber::kExponentShift); |
| 4092 | __ Subu(t6, t6, Operand(HeapNumber::kExponentBias)); |
| 4093 | // If exponent is negative then result is 0. |
| 4094 | __ slt(t2, t6, zero_reg); |
| 4095 | __ movn(t3, zero_reg, t2); // Only if exponent is negative. |
| 4096 | __ Branch(&done, lt, t6, Operand(zero_reg)); |
| 4097 | |
| 4098 | // If exponent is too big then result is minimal value. |
| 4099 | __ slti(t1, t6, meaningfull_bits - 1); |
| 4100 | __ li(t2, min_value); |
| 4101 | __ movz(t3, t2, t1); // Only if t6 is ge meaningfull_bits - 1. |
| 4102 | __ Branch(&done, ge, t6, Operand(meaningfull_bits - 1)); |
| 4103 | |
| 4104 | __ And(t5, t3, Operand(HeapNumber::kSignMask)); |
| 4105 | __ And(t3, t3, Operand(HeapNumber::kMantissaMask)); |
| 4106 | __ Or(t3, t3, Operand(1u << HeapNumber::kMantissaBitsInTopWord)); |
| 4107 | |
| 4108 | __ li(t9, HeapNumber::kMantissaBitsInTopWord); |
| 4109 | __ subu(t6, t9, t6); |
| 4110 | __ slt(t1, t6, zero_reg); |
| 4111 | __ srlv(t2, t3, t6); |
| 4112 | __ movz(t3, t2, t1); // Only if t6 is positive. |
| 4113 | __ Branch(&sign, ge, t6, Operand(zero_reg)); |
| 4114 | |
| 4115 | __ subu(t6, zero_reg, t6); |
| 4116 | __ sllv(t3, t3, t6); |
| 4117 | __ li(t9, meaningfull_bits); |
| 4118 | __ subu(t6, t9, t6); |
| 4119 | __ srlv(t4, t4, t6); |
| 4120 | __ or_(t3, t3, t4); |
| 4121 | |
| 4122 | __ bind(&sign); |
| 4123 | __ subu(t2, t3, zero_reg); |
| 4124 | __ movz(t3, t2, t5); // Only if t5 is zero. |
| 4125 | |
| 4126 | __ bind(&done); |
| 4127 | |
| 4128 | // Result is in t3. |
| 4129 | // This switch block should be exactly the same as above (FPU mode). |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 4130 | switch (elements_kind) { |
| 4131 | case JSObject::EXTERNAL_BYTE_ELEMENTS: |
| 4132 | case JSObject::EXTERNAL_UNSIGNED_BYTE_ELEMENTS: |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 4133 | __ addu(t8, a3, t0); |
| 4134 | __ sb(t3, MemOperand(t8, 0)); |
| 4135 | break; |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 4136 | case JSObject::EXTERNAL_SHORT_ELEMENTS: |
| 4137 | case JSObject::EXTERNAL_UNSIGNED_SHORT_ELEMENTS: |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 4138 | __ sll(t8, t0, 1); |
| 4139 | __ addu(t8, a3, t8); |
| 4140 | __ sh(t3, MemOperand(t8, 0)); |
| 4141 | break; |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 4142 | case JSObject::EXTERNAL_INT_ELEMENTS: |
| 4143 | case JSObject::EXTERNAL_UNSIGNED_INT_ELEMENTS: |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 4144 | __ sll(t8, t0, 2); |
| 4145 | __ addu(t8, a3, t8); |
| 4146 | __ sw(t3, MemOperand(t8, 0)); |
| 4147 | break; |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 4148 | case JSObject::EXTERNAL_PIXEL_ELEMENTS: |
| 4149 | case JSObject::EXTERNAL_FLOAT_ELEMENTS: |
| 4150 | case JSObject::EXTERNAL_DOUBLE_ELEMENTS: |
| 4151 | case JSObject::FAST_ELEMENTS: |
| 4152 | case JSObject::FAST_DOUBLE_ELEMENTS: |
| 4153 | case JSObject::DICTIONARY_ELEMENTS: |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 4154 | case JSObject::NON_STRICT_ARGUMENTS_ELEMENTS: |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 4155 | UNREACHABLE(); |
| 4156 | break; |
| 4157 | } |
| 4158 | } |
| 4159 | } |
| 4160 | } |
| 4161 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 4162 | // Slow case, key and receiver still in a0 and a1. |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 4163 | __ bind(&slow); |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 4164 | __ IncrementCounter( |
| 4165 | masm->isolate()->counters()->keyed_load_external_array_slow(), |
| 4166 | 1, a2, a3); |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 4167 | // Entry registers are intact. |
| 4168 | // ---------- S t a t e -------------- |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 4169 | // -- ra : return address |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 4170 | // -- a0 : key |
| 4171 | // -- a1 : receiver |
| 4172 | // ----------------------------------- |
| 4173 | Handle<Code> slow_ic = |
| 4174 | masm->isolate()->builtins()->KeyedStoreIC_Slow(); |
| 4175 | __ Jump(slow_ic, RelocInfo::CODE_TARGET); |
| 4176 | |
| 4177 | // Miss case, call the runtime. |
| 4178 | __ bind(&miss_force_generic); |
| 4179 | |
| 4180 | // ---------- S t a t e -------------- |
| 4181 | // -- ra : return address |
| 4182 | // -- a0 : key |
| 4183 | // -- a1 : receiver |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 4184 | // ----------------------------------- |
| 4185 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 4186 | Handle<Code> miss_ic = |
| 4187 | masm->isolate()->builtins()->KeyedStoreIC_MissForceGeneric(); |
| 4188 | __ Jump(miss_ic, RelocInfo::CODE_TARGET); |
| 4189 | } |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 4190 | |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 4191 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 4192 | void KeyedLoadStubCompiler::GenerateLoadFastElement(MacroAssembler* masm) { |
| 4193 | // ----------- S t a t e ------------- |
| 4194 | // -- ra : return address |
| 4195 | // -- a0 : key |
| 4196 | // -- a1 : receiver |
| 4197 | // ----------------------------------- |
| 4198 | Label miss_force_generic; |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 4199 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 4200 | // This stub is meant to be tail-jumped to, the receiver must already |
| 4201 | // have been verified by the caller to not be a smi. |
| 4202 | |
| 4203 | // Check that the key is a smi. |
| 4204 | __ JumpIfNotSmi(a0, &miss_force_generic); |
| 4205 | |
| 4206 | // Get the elements array. |
| 4207 | __ lw(a2, FieldMemOperand(a1, JSObject::kElementsOffset)); |
| 4208 | __ AssertFastElements(a2); |
| 4209 | |
| 4210 | // Check that the key is within bounds. |
| 4211 | __ lw(a3, FieldMemOperand(a2, FixedArray::kLengthOffset)); |
| 4212 | __ Branch(&miss_force_generic, hs, a0, Operand(a3)); |
| 4213 | |
| 4214 | // Load the result and make sure it's not the hole. |
| 4215 | __ Addu(a3, a2, Operand(FixedArray::kHeaderSize - kHeapObjectTag)); |
| 4216 | ASSERT(kSmiTag == 0 && kSmiTagSize < kPointerSizeLog2); |
| 4217 | __ sll(t0, a0, kPointerSizeLog2 - kSmiTagSize); |
| 4218 | __ Addu(t0, t0, a3); |
| 4219 | __ lw(t0, MemOperand(t0)); |
| 4220 | __ LoadRoot(t1, Heap::kTheHoleValueRootIndex); |
| 4221 | __ Branch(&miss_force_generic, eq, t0, Operand(t1)); |
| 4222 | __ mov(v0, t0); |
| 4223 | __ Ret(); |
| 4224 | |
| 4225 | __ bind(&miss_force_generic); |
| 4226 | Code* stub = masm->isolate()->builtins()->builtin( |
| 4227 | Builtins::kKeyedLoadIC_MissForceGeneric); |
| 4228 | __ Jump(Handle<Code>(stub), RelocInfo::CODE_TARGET); |
| 4229 | } |
| 4230 | |
| 4231 | |
svenpanne@chromium.org | 84bcc55 | 2011-07-18 09:50:57 +0000 | [diff] [blame] | 4232 | void KeyedLoadStubCompiler::GenerateLoadFastDoubleElement( |
| 4233 | MacroAssembler* masm) { |
rossberg@chromium.org | 717967f | 2011-07-20 13:44:42 +0000 | [diff] [blame] | 4234 | // ----------- S t a t e ------------- |
| 4235 | // -- ra : return address |
| 4236 | // -- a0 : key |
| 4237 | // -- a1 : receiver |
| 4238 | // ----------------------------------- |
| 4239 | Label miss_force_generic, slow_allocate_heapnumber; |
| 4240 | |
| 4241 | Register key_reg = a0; |
| 4242 | Register receiver_reg = a1; |
| 4243 | Register elements_reg = a2; |
| 4244 | Register heap_number_reg = a2; |
| 4245 | Register indexed_double_offset = a3; |
| 4246 | Register scratch = t0; |
| 4247 | Register scratch2 = t1; |
| 4248 | Register scratch3 = t2; |
| 4249 | Register heap_number_map = t3; |
| 4250 | |
| 4251 | // This stub is meant to be tail-jumped to, the receiver must already |
| 4252 | // have been verified by the caller to not be a smi. |
| 4253 | |
| 4254 | // Check that the key is a smi. |
| 4255 | __ JumpIfNotSmi(key_reg, &miss_force_generic); |
| 4256 | |
| 4257 | // Get the elements array. |
| 4258 | __ lw(elements_reg, |
| 4259 | FieldMemOperand(receiver_reg, JSObject::kElementsOffset)); |
| 4260 | |
| 4261 | // Check that the key is within bounds. |
| 4262 | __ lw(scratch, FieldMemOperand(elements_reg, FixedArray::kLengthOffset)); |
| 4263 | __ Branch(&miss_force_generic, hs, key_reg, Operand(scratch)); |
| 4264 | |
| 4265 | // Load the upper word of the double in the fixed array and test for NaN. |
| 4266 | __ sll(scratch2, key_reg, kDoubleSizeLog2 - kSmiTagSize); |
| 4267 | __ Addu(indexed_double_offset, elements_reg, Operand(scratch2)); |
| 4268 | uint32_t upper_32_offset = FixedArray::kHeaderSize + sizeof(kHoleNanLower32); |
| 4269 | __ lw(scratch, FieldMemOperand(indexed_double_offset, upper_32_offset)); |
| 4270 | __ Branch(&miss_force_generic, eq, scratch, Operand(kHoleNanUpper32)); |
| 4271 | |
| 4272 | // Non-NaN. Allocate a new heap number and copy the double value into it. |
| 4273 | __ LoadRoot(heap_number_map, Heap::kHeapNumberMapRootIndex); |
| 4274 | __ AllocateHeapNumber(heap_number_reg, scratch2, scratch3, |
| 4275 | heap_number_map, &slow_allocate_heapnumber); |
| 4276 | |
| 4277 | // Don't need to reload the upper 32 bits of the double, it's already in |
| 4278 | // scratch. |
| 4279 | __ sw(scratch, FieldMemOperand(heap_number_reg, |
| 4280 | HeapNumber::kExponentOffset)); |
| 4281 | __ lw(scratch, FieldMemOperand(indexed_double_offset, |
| 4282 | FixedArray::kHeaderSize)); |
| 4283 | __ sw(scratch, FieldMemOperand(heap_number_reg, |
| 4284 | HeapNumber::kMantissaOffset)); |
| 4285 | |
| 4286 | __ mov(v0, heap_number_reg); |
| 4287 | __ Ret(); |
| 4288 | |
| 4289 | __ bind(&slow_allocate_heapnumber); |
| 4290 | Handle<Code> slow_ic = |
| 4291 | masm->isolate()->builtins()->KeyedLoadIC_Slow(); |
| 4292 | __ Jump(slow_ic, RelocInfo::CODE_TARGET); |
| 4293 | |
| 4294 | __ bind(&miss_force_generic); |
| 4295 | Handle<Code> miss_ic = |
| 4296 | masm->isolate()->builtins()->KeyedLoadIC_MissForceGeneric(); |
| 4297 | __ Jump(miss_ic, RelocInfo::CODE_TARGET); |
svenpanne@chromium.org | 84bcc55 | 2011-07-18 09:50:57 +0000 | [diff] [blame] | 4298 | } |
| 4299 | |
| 4300 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 4301 | void KeyedStoreStubCompiler::GenerateStoreFastElement(MacroAssembler* masm, |
| 4302 | bool is_js_array) { |
| 4303 | // ----------- S t a t e ------------- |
| 4304 | // -- a0 : value |
| 4305 | // -- a1 : key |
| 4306 | // -- a2 : receiver |
| 4307 | // -- ra : return address |
| 4308 | // -- a3 : scratch |
| 4309 | // -- a4 : scratch (elements) |
| 4310 | // ----------------------------------- |
| 4311 | Label miss_force_generic; |
| 4312 | |
| 4313 | Register value_reg = a0; |
| 4314 | Register key_reg = a1; |
| 4315 | Register receiver_reg = a2; |
| 4316 | Register scratch = a3; |
| 4317 | Register elements_reg = t0; |
| 4318 | Register scratch2 = t1; |
| 4319 | Register scratch3 = t2; |
| 4320 | |
| 4321 | // This stub is meant to be tail-jumped to, the receiver must already |
| 4322 | // have been verified by the caller to not be a smi. |
| 4323 | |
| 4324 | // Check that the key is a smi. |
sgjesse@chromium.org | 6db8871 | 2011-07-11 11:41:22 +0000 | [diff] [blame] | 4325 | __ JumpIfNotSmi(key_reg, &miss_force_generic); |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 4326 | |
| 4327 | // Get the elements array and make sure it is a fast element array, not 'cow'. |
| 4328 | __ lw(elements_reg, |
| 4329 | FieldMemOperand(receiver_reg, JSObject::kElementsOffset)); |
| 4330 | __ CheckMap(elements_reg, |
| 4331 | scratch, |
| 4332 | Heap::kFixedArrayMapRootIndex, |
| 4333 | &miss_force_generic, |
| 4334 | DONT_DO_SMI_CHECK); |
| 4335 | |
| 4336 | // Check that the key is within bounds. |
| 4337 | if (is_js_array) { |
| 4338 | __ lw(scratch, FieldMemOperand(receiver_reg, JSArray::kLengthOffset)); |
| 4339 | } else { |
| 4340 | __ lw(scratch, FieldMemOperand(elements_reg, FixedArray::kLengthOffset)); |
| 4341 | } |
| 4342 | // Compare smis. |
| 4343 | __ Branch(&miss_force_generic, hs, key_reg, Operand(scratch)); |
| 4344 | |
| 4345 | __ Addu(scratch, |
| 4346 | elements_reg, Operand(FixedArray::kHeaderSize - kHeapObjectTag)); |
| 4347 | ASSERT(kSmiTag == 0 && kSmiTagSize < kPointerSizeLog2); |
| 4348 | __ sll(scratch2, key_reg, kPointerSizeLog2 - kSmiTagSize); |
| 4349 | __ Addu(scratch3, scratch2, scratch); |
| 4350 | __ sw(value_reg, MemOperand(scratch3)); |
| 4351 | __ RecordWrite(scratch, Operand(scratch2), receiver_reg , elements_reg); |
| 4352 | |
| 4353 | // value_reg (a0) is preserved. |
| 4354 | // Done. |
| 4355 | __ Ret(); |
| 4356 | |
| 4357 | __ bind(&miss_force_generic); |
| 4358 | Handle<Code> ic = |
| 4359 | masm->isolate()->builtins()->KeyedStoreIC_MissForceGeneric(); |
| 4360 | __ Jump(ic, RelocInfo::CODE_TARGET); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 4361 | } |
| 4362 | |
| 4363 | |
svenpanne@chromium.org | 84bcc55 | 2011-07-18 09:50:57 +0000 | [diff] [blame] | 4364 | void KeyedStoreStubCompiler::GenerateStoreFastDoubleElement( |
| 4365 | MacroAssembler* masm, |
| 4366 | bool is_js_array) { |
rossberg@chromium.org | 717967f | 2011-07-20 13:44:42 +0000 | [diff] [blame] | 4367 | // ----------- S t a t e ------------- |
| 4368 | // -- a0 : value |
| 4369 | // -- a1 : key |
| 4370 | // -- a2 : receiver |
| 4371 | // -- ra : return address |
| 4372 | // -- a3 : scratch |
| 4373 | // -- t0 : scratch (elements_reg) |
| 4374 | // -- t1 : scratch (mantissa_reg) |
| 4375 | // -- t2 : scratch (exponent_reg) |
| 4376 | // -- t3 : scratch4 |
| 4377 | // ----------------------------------- |
| 4378 | Label miss_force_generic, smi_value, is_nan, maybe_nan, have_double_value; |
| 4379 | |
| 4380 | Register value_reg = a0; |
| 4381 | Register key_reg = a1; |
| 4382 | Register receiver_reg = a2; |
| 4383 | Register scratch = a3; |
| 4384 | Register elements_reg = t0; |
| 4385 | Register mantissa_reg = t1; |
| 4386 | Register exponent_reg = t2; |
| 4387 | Register scratch4 = t3; |
| 4388 | |
| 4389 | // This stub is meant to be tail-jumped to, the receiver must already |
| 4390 | // have been verified by the caller to not be a smi. |
| 4391 | __ JumpIfNotSmi(key_reg, &miss_force_generic); |
| 4392 | |
| 4393 | __ lw(elements_reg, |
| 4394 | FieldMemOperand(receiver_reg, JSObject::kElementsOffset)); |
| 4395 | |
| 4396 | // Check that the key is within bounds. |
| 4397 | if (is_js_array) { |
| 4398 | __ lw(scratch, FieldMemOperand(receiver_reg, JSArray::kLengthOffset)); |
| 4399 | } else { |
| 4400 | __ lw(scratch, |
| 4401 | FieldMemOperand(elements_reg, FixedArray::kLengthOffset)); |
| 4402 | } |
| 4403 | // Compare smis, unsigned compare catches both negative and out-of-bound |
| 4404 | // indexes. |
| 4405 | __ Branch(&miss_force_generic, hs, key_reg, Operand(scratch)); |
| 4406 | |
| 4407 | // Handle smi values specially. |
| 4408 | __ JumpIfSmi(value_reg, &smi_value); |
| 4409 | |
| 4410 | // Ensure that the object is a heap number |
| 4411 | __ CheckMap(value_reg, |
| 4412 | scratch, |
| 4413 | masm->isolate()->factory()->heap_number_map(), |
| 4414 | &miss_force_generic, |
| 4415 | DONT_DO_SMI_CHECK); |
| 4416 | |
| 4417 | // Check for nan: all NaN values have a value greater (signed) than 0x7ff00000 |
| 4418 | // in the exponent. |
| 4419 | __ li(scratch, Operand(kNaNOrInfinityLowerBoundUpper32)); |
| 4420 | __ lw(exponent_reg, FieldMemOperand(value_reg, HeapNumber::kExponentOffset)); |
| 4421 | __ Branch(&maybe_nan, ge, exponent_reg, Operand(scratch)); |
| 4422 | |
| 4423 | __ lw(mantissa_reg, FieldMemOperand(value_reg, HeapNumber::kMantissaOffset)); |
| 4424 | |
| 4425 | __ bind(&have_double_value); |
| 4426 | __ sll(scratch4, key_reg, kDoubleSizeLog2 - kSmiTagSize); |
| 4427 | __ Addu(scratch, elements_reg, Operand(scratch4)); |
| 4428 | __ sw(mantissa_reg, FieldMemOperand(scratch, FixedDoubleArray::kHeaderSize)); |
| 4429 | uint32_t offset = FixedDoubleArray::kHeaderSize + sizeof(kHoleNanLower32); |
| 4430 | __ sw(exponent_reg, FieldMemOperand(scratch, offset)); |
ricow@chromium.org | 4668a2c | 2011-08-29 10:41:00 +0000 | [diff] [blame^] | 4431 | __ Ret(USE_DELAY_SLOT); |
| 4432 | __ mov(v0, value_reg); // In delay slot. |
rossberg@chromium.org | 717967f | 2011-07-20 13:44:42 +0000 | [diff] [blame] | 4433 | |
| 4434 | __ bind(&maybe_nan); |
| 4435 | // Could be NaN or Infinity. If fraction is not zero, it's NaN, otherwise |
| 4436 | // it's an Infinity, and the non-NaN code path applies. |
| 4437 | __ li(scratch, Operand(kNaNOrInfinityLowerBoundUpper32)); |
| 4438 | __ Branch(&is_nan, gt, exponent_reg, Operand(scratch)); |
| 4439 | __ lw(mantissa_reg, FieldMemOperand(value_reg, HeapNumber::kMantissaOffset)); |
| 4440 | __ Branch(&have_double_value, eq, mantissa_reg, Operand(zero_reg)); |
| 4441 | |
| 4442 | __ bind(&is_nan); |
| 4443 | // Load canonical NaN for storing into the double array. |
| 4444 | uint64_t nan_int64 = BitCast<uint64_t>( |
| 4445 | FixedDoubleArray::canonical_not_the_hole_nan_as_double()); |
| 4446 | __ li(mantissa_reg, Operand(static_cast<uint32_t>(nan_int64))); |
| 4447 | __ li(exponent_reg, Operand(static_cast<uint32_t>(nan_int64 >> 32))); |
| 4448 | __ jmp(&have_double_value); |
| 4449 | |
| 4450 | __ bind(&smi_value); |
| 4451 | __ Addu(scratch, elements_reg, |
| 4452 | Operand(FixedDoubleArray::kHeaderSize - kHeapObjectTag)); |
| 4453 | __ sll(scratch4, key_reg, kDoubleSizeLog2 - kSmiTagSize); |
| 4454 | __ Addu(scratch, scratch, scratch4); |
| 4455 | // scratch is now effective address of the double element |
| 4456 | |
| 4457 | FloatingPointHelper::Destination destination; |
| 4458 | if (CpuFeatures::IsSupported(FPU)) { |
| 4459 | destination = FloatingPointHelper::kFPURegisters; |
| 4460 | } else { |
| 4461 | destination = FloatingPointHelper::kCoreRegisters; |
| 4462 | } |
lrn@chromium.org | d4e9e22 | 2011-08-03 12:01:58 +0000 | [diff] [blame] | 4463 | |
| 4464 | Register untagged_value = receiver_reg; |
| 4465 | __ SmiUntag(untagged_value, value_reg); |
rossberg@chromium.org | 717967f | 2011-07-20 13:44:42 +0000 | [diff] [blame] | 4466 | FloatingPointHelper::ConvertIntToDouble( |
lrn@chromium.org | d4e9e22 | 2011-08-03 12:01:58 +0000 | [diff] [blame] | 4467 | masm, |
| 4468 | untagged_value, |
| 4469 | destination, |
| 4470 | f0, |
| 4471 | mantissa_reg, |
| 4472 | exponent_reg, |
| 4473 | scratch4, |
| 4474 | f2); |
rossberg@chromium.org | 717967f | 2011-07-20 13:44:42 +0000 | [diff] [blame] | 4475 | if (destination == FloatingPointHelper::kFPURegisters) { |
| 4476 | CpuFeatures::Scope scope(FPU); |
| 4477 | __ sdc1(f0, MemOperand(scratch, 0)); |
| 4478 | } else { |
| 4479 | __ sw(mantissa_reg, MemOperand(scratch, 0)); |
| 4480 | __ sw(exponent_reg, MemOperand(scratch, Register::kSizeInBytes)); |
| 4481 | } |
ricow@chromium.org | 4668a2c | 2011-08-29 10:41:00 +0000 | [diff] [blame^] | 4482 | __ Ret(USE_DELAY_SLOT); |
| 4483 | __ mov(v0, value_reg); // In delay slot. |
rossberg@chromium.org | 717967f | 2011-07-20 13:44:42 +0000 | [diff] [blame] | 4484 | |
| 4485 | // Handle store cache miss, replacing the ic with the generic stub. |
| 4486 | __ bind(&miss_force_generic); |
| 4487 | Handle<Code> ic = |
| 4488 | masm->isolate()->builtins()->KeyedStoreIC_MissForceGeneric(); |
| 4489 | __ Jump(ic, RelocInfo::CODE_TARGET); |
svenpanne@chromium.org | 84bcc55 | 2011-07-18 09:50:57 +0000 | [diff] [blame] | 4490 | } |
| 4491 | |
| 4492 | |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 4493 | #undef __ |
| 4494 | |
| 4495 | } } // namespace v8::internal |
| 4496 | |
erik.corry@gmail.com | 9dfbea4 | 2010-05-21 12:58:28 +0000 | [diff] [blame] | 4497 | #endif // V8_TARGET_ARCH_MIPS |