/*
- * Copyright (C) 2008 Apple Inc. All rights reserved.
+ * Copyright (C) 2008, 2012, 2013, 2014 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
#ifndef StructureStubInfo_h
#define StructureStubInfo_h
-#include <wtf/Platform.h>
-
-#if ENABLE(JIT)
-
#include "CodeOrigin.h"
#include "Instruction.h"
+#include "JITStubRoutine.h"
#include "MacroAssembler.h"
#include "Opcode.h"
+#include "PolymorphicAccessStructureList.h"
+#include "RegisterSet.h"
+#include "SpillRegistersMode.h"
#include "Structure.h"
+#include "StructureStubClearingWatchpoint.h"
+#include <wtf/OwnPtr.h>
namespace JSC {
- class PolymorphicPutByIdList;
-
- enum AccessType {
- access_get_by_id_self,
- access_get_by_id_proto,
- access_get_by_id_chain,
- access_get_by_id_self_list,
- access_get_by_id_proto_list,
- access_put_by_id_transition_normal,
- access_put_by_id_transition_direct,
- access_put_by_id_replace,
- access_put_by_id_list,
- access_unset,
- access_get_by_id_generic,
- access_put_by_id_generic,
- access_get_array_length,
- access_get_string_length,
- };
-
- inline bool isGetByIdAccess(AccessType accessType)
- {
- switch (accessType) {
- case access_get_by_id_self:
- case access_get_by_id_proto:
- case access_get_by_id_chain:
- case access_get_by_id_self_list:
- case access_get_by_id_proto_list:
- case access_get_by_id_generic:
- case access_get_array_length:
- case access_get_string_length:
- return true;
- default:
- return false;
- }
+#if ENABLE(JIT)
+
+class PolymorphicGetByIdList;
+class PolymorphicPutByIdList;
+
+enum AccessType {
+ access_get_by_id_self,
+ access_get_by_id_chain,
+ access_get_by_id_list,
+ access_put_by_id_transition_normal,
+ access_put_by_id_transition_direct,
+ access_put_by_id_replace,
+ access_put_by_id_list,
+ access_unset,
+ access_in_list
+};
+
+inline bool isGetByIdAccess(AccessType accessType)
+{
+ switch (accessType) {
+ case access_get_by_id_self:
+ case access_get_by_id_chain:
+ case access_get_by_id_list:
+ return true;
+ default:
+ return false;
}
+}
- inline bool isPutByIdAccess(AccessType accessType)
+inline bool isPutByIdAccess(AccessType accessType)
+{
+ switch (accessType) {
+ case access_put_by_id_transition_normal:
+ case access_put_by_id_transition_direct:
+ case access_put_by_id_replace:
+ case access_put_by_id_list:
+ return true;
+ default:
+ return false;
+ }
+}
+
+inline bool isInAccess(AccessType accessType)
+{
+ switch (accessType) {
+ case access_in_list:
+ return true;
+ default:
+ return false;
+ }
+}
+
+struct StructureStubInfo {
+ StructureStubInfo()
+ : accessType(access_unset)
+ , seen(false)
+ , resetByGC(false)
{
- switch (accessType) {
- case access_put_by_id_transition_normal:
- case access_put_by_id_transition_direct:
- case access_put_by_id_replace:
- case access_put_by_id_list:
- case access_put_by_id_generic:
- return true;
- default:
- return false;
- }
}
- struct StructureStubInfo {
- StructureStubInfo()
- : accessType(access_unset)
- , seen(false)
- {
- }
-
- void initGetByIdSelf(JSGlobalData& globalData, JSCell* owner, Structure* baseObjectStructure)
- {
- accessType = access_get_by_id_self;
-
- u.getByIdSelf.baseObjectStructure.set(globalData, owner, baseObjectStructure);
- }
-
- void initGetByIdProto(JSGlobalData& globalData, JSCell* owner, Structure* baseObjectStructure, Structure* prototypeStructure)
- {
- accessType = access_get_by_id_proto;
-
- u.getByIdProto.baseObjectStructure.set(globalData, owner, baseObjectStructure);
- u.getByIdProto.prototypeStructure.set(globalData, owner, prototypeStructure);
- }
-
- void initGetByIdChain(JSGlobalData& globalData, JSCell* owner, Structure* baseObjectStructure, StructureChain* chain)
- {
- accessType = access_get_by_id_chain;
-
- u.getByIdChain.baseObjectStructure.set(globalData, owner, baseObjectStructure);
- u.getByIdChain.chain.set(globalData, owner, chain);
- }
-
- void initGetByIdSelfList(PolymorphicAccessStructureList* structureList, int listSize)
- {
- accessType = access_get_by_id_self_list;
-
- u.getByIdSelfList.structureList = structureList;
- u.getByIdSelfList.listSize = listSize;
- }
-
- void initGetByIdProtoList(PolymorphicAccessStructureList* structureList, int listSize)
- {
- accessType = access_get_by_id_proto_list;
-
- u.getByIdProtoList.structureList = structureList;
- u.getByIdProtoList.listSize = listSize;
- }
-
- // PutById*
-
- void initPutByIdTransition(JSGlobalData& globalData, JSCell* owner, Structure* previousStructure, Structure* structure, StructureChain* chain, bool isDirect)
- {
- if (isDirect)
- accessType = access_put_by_id_transition_direct;
- else
- accessType = access_put_by_id_transition_normal;
-
- u.putByIdTransition.previousStructure.set(globalData, owner, previousStructure);
- u.putByIdTransition.structure.set(globalData, owner, structure);
- u.putByIdTransition.chain.set(globalData, owner, chain);
- }
-
- void initPutByIdReplace(JSGlobalData& globalData, JSCell* owner, Structure* baseObjectStructure)
- {
- accessType = access_put_by_id_replace;
+ void initGetByIdSelf(VM& vm, JSCell* owner, Structure* baseObjectStructure)
+ {
+ accessType = access_get_by_id_self;
+
+ u.getByIdSelf.baseObjectStructure.set(vm, owner, baseObjectStructure);
+ }
+
+ void initGetByIdChain(VM& vm, JSCell* owner, Structure* baseObjectStructure, StructureChain* chain, unsigned count, bool isDirect)
+ {
+ accessType = access_get_by_id_chain;
+
+ u.getByIdChain.baseObjectStructure.set(vm, owner, baseObjectStructure);
+ u.getByIdChain.chain.set(vm, owner, chain);
+ u.getByIdChain.count = count;
+ u.getByIdChain.isDirect = isDirect;
+ }
+
+ void initGetByIdList(PolymorphicGetByIdList* list)
+ {
+ accessType = access_get_by_id_list;
+ u.getByIdList.list = list;
+ }
+
+ // PutById*
+
+ void initPutByIdTransition(VM& vm, JSCell* owner, Structure* previousStructure, Structure* structure, StructureChain* chain, bool isDirect)
+ {
+ if (isDirect)
+ accessType = access_put_by_id_transition_direct;
+ else
+ accessType = access_put_by_id_transition_normal;
+
+ u.putByIdTransition.previousStructure.set(vm, owner, previousStructure);
+ u.putByIdTransition.structure.set(vm, owner, structure);
+ u.putByIdTransition.chain.set(vm, owner, chain);
+ }
+
+ void initPutByIdReplace(VM& vm, JSCell* owner, Structure* baseObjectStructure)
+ {
+ accessType = access_put_by_id_replace;
- u.putByIdReplace.baseObjectStructure.set(globalData, owner, baseObjectStructure);
- }
+ u.putByIdReplace.baseObjectStructure.set(vm, owner, baseObjectStructure);
+ }
- void initPutByIdList(PolymorphicPutByIdList* list)
- {
- accessType = access_put_by_id_list;
- u.putByIdList.list = list;
- }
+ void initPutByIdList(PolymorphicPutByIdList* list)
+ {
+ accessType = access_put_by_id_list;
+ u.putByIdList.list = list;
+ }
+
+ void initInList(PolymorphicAccessStructureList* list, int listSize)
+ {
+ accessType = access_in_list;
+ u.inList.structureList = list;
+ u.inList.listSize = listSize;
+ }
- void reset()
- {
- deref();
- accessType = access_unset;
- stubRoutine = MacroAssemblerCodeRef();
- }
-
- void deref();
+ void reset()
+ {
+ deref();
+ accessType = access_unset;
+ stubRoutine.clear();
+ watchpoints.clear();
+ }
- bool visitWeakReferences();
-
- bool seenOnce()
- {
- return seen;
- }
-
- void setSeen()
- {
- seen = true;
- }
+ void deref();
+
+ // Check if the stub has weak references that are dead. If there are dead ones that imply
+ // that the stub should be entirely reset, this should return false. If there are dead ones
+ // that can be handled internally by the stub and don't require a full reset, then this
+ // should reset them and return true. If there are no dead weak references, return true.
+ // If this method returns true it means that it has left the stub in a state where all
+ // outgoing GC pointers are known to point to currently marked objects; this method is
+ // allowed to accomplish this by either clearing those pointers somehow or by proving that
+ // they have already been marked. It is not allowed to mark new objects.
+ bool visitWeakReferences(RepatchBuffer&);
- unsigned bytecodeIndex;
+ bool seenOnce()
+ {
+ return seen;
+ }
- int8_t accessType;
- int8_t seen;
+ void setSeen()
+ {
+ seen = true;
+ }
+
+ StructureStubClearingWatchpoint* addWatchpoint(CodeBlock* codeBlock)
+ {
+ return WatchpointsOnStructureStubInfo::ensureReferenceAndAddWatchpoint(
+ watchpoints, codeBlock, this);
+ }
+
+ int8_t accessType;
+ bool seen : 1;
+ bool resetByGC : 1;
-#if ENABLE(DFG_JIT)
- CodeOrigin codeOrigin;
-#endif // ENABLE(DFG_JIT)
+ CodeOrigin codeOrigin;
- union {
- struct {
- int8_t registersFlushed;
- int8_t baseGPR;
+ struct {
+ unsigned spillMode : 8;
+ int8_t baseGPR;
#if USE(JSVALUE32_64)
- int8_t valueTagGPR;
+ int8_t valueTagGPR;
#endif
- int8_t valueGPR;
- int8_t scratchGPR;
- int16_t deltaCallToDone;
- int16_t deltaCallToStructCheck;
- int16_t deltaCallToSlowCase;
- int16_t deltaCheckImmToCall;
+ int8_t valueGPR;
+ RegisterSet usedRegisters;
+ int32_t deltaCallToDone;
+ int32_t deltaCallToStorageLoad;
+ int32_t deltaCallToJump;
+ int32_t deltaCallToSlowCase;
+ int32_t deltaCheckImmToCall;
#if USE(JSVALUE64)
- int16_t deltaCallToLoadOrStore;
+ int32_t deltaCallToLoadOrStore;
#else
- int16_t deltaCallToTagLoadOrStore;
- int16_t deltaCallToPayloadLoadOrStore;
+ int32_t deltaCallToTagLoadOrStore;
+ int32_t deltaCallToPayloadLoadOrStore;
#endif
- } dfg;
- struct {
- union {
- struct {
- int16_t structureToCompare;
- int16_t structureCheck;
-#if USE(JSVALUE64)
- int16_t displacementLabel;
-#else
- int16_t displacementLabel1;
- int16_t displacementLabel2;
-#endif
- int16_t putResult;
- int16_t coldPathBegin;
- } get;
- struct {
- int16_t structureToCompare;
-#if USE(JSVALUE64)
- int16_t displacementLabel;
-#else
- int16_t displacementLabel1;
- int16_t displacementLabel2;
-#endif
- } put;
- } u;
- int16_t methodCheckProtoObj;
- int16_t methodCheckProtoStructureToCompare;
- int16_t methodCheckPutFunction;
- } baseline;
- } patch;
-
- union {
- struct {
- // It would be unwise to put anything here, as it will surely be overwritten.
- } unset;
- struct {
- WriteBarrierBase<Structure> baseObjectStructure;
- } getByIdSelf;
- struct {
- WriteBarrierBase<Structure> baseObjectStructure;
- WriteBarrierBase<Structure> prototypeStructure;
- } getByIdProto;
- struct {
- WriteBarrierBase<Structure> baseObjectStructure;
- WriteBarrierBase<StructureChain> chain;
- } getByIdChain;
- struct {
- PolymorphicAccessStructureList* structureList;
- int listSize;
- } getByIdSelfList;
- struct {
- PolymorphicAccessStructureList* structureList;
- int listSize;
- } getByIdProtoList;
- struct {
- WriteBarrierBase<Structure> previousStructure;
- WriteBarrierBase<Structure> structure;
- WriteBarrierBase<StructureChain> chain;
- } putByIdTransition;
- struct {
- WriteBarrierBase<Structure> baseObjectStructure;
- } putByIdReplace;
- struct {
- PolymorphicPutByIdList* list;
- } putByIdList;
- } u;
-
- MacroAssemblerCodeRef stubRoutine;
- CodeLocationCall callReturnLocation;
- CodeLocationLabel hotPathBegin;
- };
-
- inline void* getStructureStubInfoReturnLocation(StructureStubInfo* structureStubInfo)
- {
- return structureStubInfo->callReturnLocation.executableAddress();
- }
+ } patch;
+
+ union {
+ struct {
+ // It would be unwise to put anything here, as it will surely be overwritten.
+ } unset;
+ struct {
+ WriteBarrierBase<Structure> baseObjectStructure;
+ } getByIdSelf;
+ struct {
+ WriteBarrierBase<Structure> baseObjectStructure;
+ WriteBarrierBase<Structure> prototypeStructure;
+ bool isDirect;
+ } getByIdProto;
+ struct {
+ WriteBarrierBase<Structure> baseObjectStructure;
+ WriteBarrierBase<StructureChain> chain;
+ unsigned count : 31;
+ bool isDirect : 1;
+ } getByIdChain;
+ struct {
+ PolymorphicGetByIdList* list;
+ } getByIdList;
+ struct {
+ WriteBarrierBase<Structure> previousStructure;
+ WriteBarrierBase<Structure> structure;
+ WriteBarrierBase<StructureChain> chain;
+ } putByIdTransition;
+ struct {
+ WriteBarrierBase<Structure> baseObjectStructure;
+ } putByIdReplace;
+ struct {
+ PolymorphicPutByIdList* list;
+ } putByIdList;
+ struct {
+ PolymorphicAccessStructureList* structureList;
+ int listSize;
+ } inList;
+ } u;
+
+ RefPtr<JITStubRoutine> stubRoutine;
+ CodeLocationCall callReturnLocation;
+ RefPtr<WatchpointsOnStructureStubInfo> watchpoints;
+};
+
+inline CodeOrigin getStructureStubInfoCodeOrigin(StructureStubInfo& structureStubInfo)
+{
+ return structureStubInfo.codeOrigin;
+}
+
+typedef HashMap<CodeOrigin, StructureStubInfo*, CodeOriginApproximateHash> StubInfoMap;
- inline unsigned getStructureStubInfoBytecodeIndex(StructureStubInfo* structureStubInfo)
- {
- return structureStubInfo->bytecodeIndex;
- }
+#else
-} // namespace JSC
+typedef HashMap<int, void*> StubInfoMap;
#endif // ENABLE(JIT)
+} // namespace JSC
+
#endif // StructureStubInfo_h
projects / apple / javascriptcore.git / blobdiff