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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef V8_IA32_MACRO_ASSEMBLER_IA32_H_ | 5 #ifndef V8_IA32_MACRO_ASSEMBLER_IA32_H_ |
6 #define V8_IA32_MACRO_ASSEMBLER_IA32_H_ | 6 #define V8_IA32_MACRO_ASSEMBLER_IA32_H_ |
7 | 7 |
8 #include "src/assembler.h" | 8 #include "src/assembler.h" |
9 #include "src/bailout-reason.h" | 9 #include "src/bailout-reason.h" |
10 #include "src/frames.h" | 10 #include "src/frames.h" |
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253 // Leave the current exit frame. Expects the return value in | 253 // Leave the current exit frame. Expects the return value in |
254 // register eax (untouched). | 254 // register eax (untouched). |
255 void LeaveApiExitFrame(bool restore_context); | 255 void LeaveApiExitFrame(bool restore_context); |
256 | 256 |
257 // Find the function context up the context chain. | 257 // Find the function context up the context chain. |
258 void LoadContext(Register dst, int context_chain_length); | 258 void LoadContext(Register dst, int context_chain_length); |
259 | 259 |
260 // Load the global proxy from the current context. | 260 // Load the global proxy from the current context. |
261 void LoadGlobalProxy(Register dst); | 261 void LoadGlobalProxy(Register dst); |
262 | 262 |
263 // Conditionally load the cached Array transitioned map of type | |
264 // transitioned_kind from the native context if the map in register | |
265 // map_in_out is the cached Array map in the native context of | |
266 // expected_kind. | |
267 void LoadTransitionedArrayMapConditional(ElementsKind expected_kind, | |
268 ElementsKind transitioned_kind, | |
269 Register map_in_out, | |
270 Register scratch, | |
271 Label* no_map_match); | |
272 | |
273 // Load the global function with the given index. | 263 // Load the global function with the given index. |
274 void LoadGlobalFunction(int index, Register function); | 264 void LoadGlobalFunction(int index, Register function); |
275 | 265 |
276 // Load the initial map from the global function. The registers | 266 // Load the initial map from the global function. The registers |
277 // function and map can be the same. | 267 // function and map can be the same. |
278 void LoadGlobalFunctionInitialMap(Register function, Register map); | 268 void LoadGlobalFunctionInitialMap(Register function, Register map); |
279 | 269 |
280 // Push and pop the registers that can hold pointers. | 270 // Push and pop the registers that can hold pointers. |
281 void PushSafepointRegisters() { pushad(); } | 271 void PushSafepointRegisters() { pushad(); } |
282 void PopSafepointRegisters() { popad(); } | 272 void PopSafepointRegisters() { popad(); } |
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384 void SafeMove(Register dst, const Immediate& x); | 374 void SafeMove(Register dst, const Immediate& x); |
385 void SafePush(const Immediate& x); | 375 void SafePush(const Immediate& x); |
386 | 376 |
387 // Compare object type for heap object. | 377 // Compare object type for heap object. |
388 // Incoming register is heap_object and outgoing register is map. | 378 // Incoming register is heap_object and outgoing register is map. |
389 void CmpObjectType(Register heap_object, InstanceType type, Register map); | 379 void CmpObjectType(Register heap_object, InstanceType type, Register map); |
390 | 380 |
391 // Compare instance type for map. | 381 // Compare instance type for map. |
392 void CmpInstanceType(Register map, InstanceType type); | 382 void CmpInstanceType(Register map, InstanceType type); |
393 | 383 |
394 // Check if a map for a JSObject indicates that the object can have both smi | |
395 // and HeapObject elements. Jump to the specified label if it does not. | |
396 void CheckFastObjectElements(Register map, Label* fail, | |
397 Label::Distance distance = Label::kFar); | |
398 | |
399 // Check if a map for a JSObject indicates that the object has fast smi only | |
400 // elements. Jump to the specified label if it does not. | |
401 void CheckFastSmiElements(Register map, Label* fail, | |
402 Label::Distance distance = Label::kFar); | |
403 | |
404 // Check to see if maybe_number can be stored as a double in | |
405 // FastDoubleElements. If it can, store it at the index specified by key in | |
406 // the FastDoubleElements array elements, otherwise jump to fail. | |
407 void StoreNumberToDoubleElements(Register maybe_number, Register elements, | |
408 Register key, Register scratch1, | |
409 XMMRegister scratch2, Label* fail, | |
410 int offset = 0); | |
411 | |
412 // Compare an object's map with the specified map. | 384 // Compare an object's map with the specified map. |
413 void CompareMap(Register obj, Handle<Map> map); | 385 void CompareMap(Register obj, Handle<Map> map); |
414 | 386 |
415 // Check if the map of an object is equal to a specified map and branch to | 387 // Check if the map of an object is equal to a specified map and branch to |
416 // label if not. Skip the smi check if not required (object is known to be a | 388 // label if not. Skip the smi check if not required (object is known to be a |
417 // heap object). If mode is ALLOW_ELEMENT_TRANSITION_MAPS, then also match | 389 // heap object). If mode is ALLOW_ELEMENT_TRANSITION_MAPS, then also match |
418 // against maps that are ElementsKind transition maps of the specified map. | 390 // against maps that are ElementsKind transition maps of the specified map. |
419 void CheckMap(Register obj, Handle<Map> map, Label* fail, | 391 void CheckMap(Register obj, Handle<Map> map, Label* fail, |
420 SmiCheckType smi_check_type); | 392 SmiCheckType smi_check_type); |
421 | 393 |
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936 // AllocationMemento support. Arrays may have an associated | 908 // AllocationMemento support. Arrays may have an associated |
937 // AllocationMemento object that can be checked for in order to pretransition | 909 // AllocationMemento object that can be checked for in order to pretransition |
938 // to another type. | 910 // to another type. |
939 // On entry, receiver_reg should point to the array object. | 911 // On entry, receiver_reg should point to the array object. |
940 // scratch_reg gets clobbered. | 912 // scratch_reg gets clobbered. |
941 // If allocation info is present, conditional code is set to equal. | 913 // If allocation info is present, conditional code is set to equal. |
942 void TestJSArrayForAllocationMemento(Register receiver_reg, | 914 void TestJSArrayForAllocationMemento(Register receiver_reg, |
943 Register scratch_reg, | 915 Register scratch_reg, |
944 Label* no_memento_found); | 916 Label* no_memento_found); |
945 | 917 |
946 void JumpIfJSArrayHasAllocationMemento(Register receiver_reg, | |
947 Register scratch_reg, | |
948 Label* memento_found) { | |
949 Label no_memento_found; | |
950 TestJSArrayForAllocationMemento(receiver_reg, scratch_reg, | |
951 &no_memento_found); | |
952 j(equal, memento_found); | |
953 bind(&no_memento_found); | |
954 } | |
955 | |
956 // Jumps to found label if a prototype map has dictionary elements. | |
957 void JumpIfDictionaryInPrototypeChain(Register object, Register scratch0, | |
958 Register scratch1, Label* found); | |
959 | |
960 private: | 918 private: |
961 bool generating_stub_; | 919 bool generating_stub_; |
962 bool has_frame_; | 920 bool has_frame_; |
963 // This handle will be patched with the code object on installation. | 921 // This handle will be patched with the code object on installation. |
964 Handle<Object> code_object_; | 922 Handle<Object> code_object_; |
965 | 923 |
966 // Helper functions for generating invokes. | 924 // Helper functions for generating invokes. |
967 void InvokePrologue(const ParameterCount& expected, | 925 void InvokePrologue(const ParameterCount& expected, |
968 const ParameterCount& actual, Label* done, | 926 const ParameterCount& actual, Label* done, |
969 bool* definitely_mismatches, InvokeFlag flag, | 927 bool* definitely_mismatches, InvokeFlag flag, |
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1053 inline Operand NativeContextOperand() { | 1011 inline Operand NativeContextOperand() { |
1054 return ContextOperand(esi, Context::NATIVE_CONTEXT_INDEX); | 1012 return ContextOperand(esi, Context::NATIVE_CONTEXT_INDEX); |
1055 } | 1013 } |
1056 | 1014 |
1057 #define ACCESS_MASM(masm) masm-> | 1015 #define ACCESS_MASM(masm) masm-> |
1058 | 1016 |
1059 } // namespace internal | 1017 } // namespace internal |
1060 } // namespace v8 | 1018 } // namespace v8 |
1061 | 1019 |
1062 #endif // V8_IA32_MACRO_ASSEMBLER_IA32_H_ | 1020 #endif // V8_IA32_MACRO_ASSEMBLER_IA32_H_ |
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