/*
- * Copyright (C) 2008, 2012 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 "DFGRegisterSet.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 {
+#if ENABLE(JIT)
+
+class PolymorphicGetByIdList;
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_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_get_by_id_generic,
- access_put_by_id_generic,
- access_get_array_length,
- access_get_string_length,
+ access_in_list
};
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:
+ case access_get_by_id_list:
return true;
default:
return false;
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;
+ }
+}
+
+inline bool isInAccess(AccessType accessType)
+{
+ switch (accessType) {
+ case access_in_list:
return true;
default:
return false;
u.getByIdSelf.baseObjectStructure.set(vm, owner, baseObjectStructure);
}
- void initGetByIdProto(VM& vm, JSCell* owner, Structure* baseObjectStructure, Structure* prototypeStructure, bool isDirect)
- {
- accessType = access_get_by_id_proto;
-
- u.getByIdProto.baseObjectStructure.set(vm, owner, baseObjectStructure);
- u.getByIdProto.prototypeStructure.set(vm, owner, prototypeStructure);
- u.getByIdProto.isDirect = isDirect;
- }
-
void initGetByIdChain(VM& vm, JSCell* owner, Structure* baseObjectStructure, StructureChain* chain, unsigned count, bool isDirect)
{
accessType = access_get_by_id_chain;
u.getByIdChain.isDirect = isDirect;
}
- void initGetByIdSelfList(PolymorphicAccessStructureList* structureList, int listSize)
+ void initGetByIdList(PolymorphicGetByIdList* list)
{
- 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;
+ accessType = access_get_by_id_list;
+ u.getByIdList.list = list;
}
// PutById*
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()
{
void deref();
- bool visitWeakReferences();
+ // 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&);
bool seenOnce()
{
return WatchpointsOnStructureStubInfo::ensureReferenceAndAddWatchpoint(
watchpoints, codeBlock, this);
}
-
- unsigned bytecodeIndex;
-
+
int8_t accessType;
bool seen : 1;
bool resetByGC : 1;
-#if ENABLE(DFG_JIT)
CodeOrigin codeOrigin;
-#endif // ENABLE(DFG_JIT)
- 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;
- DFG::RegisterSetPOD usedRegisters;
- int32_t deltaCallToDone;
- int32_t deltaCallToStorageLoad;
- int32_t deltaCallToStructCheck;
- int32_t deltaCallToSlowCase;
- int32_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)
- int32_t deltaCallToLoadOrStore;
+ int32_t deltaCallToLoadOrStore;
#else
- int32_t deltaCallToTagLoadOrStore;
- int32_t deltaCallToPayloadLoadOrStore;
+ int32_t deltaCallToTagLoadOrStore;
+ int32_t deltaCallToPayloadLoadOrStore;
#endif
- } dfg;
- struct {
- union {
- struct {
- int16_t structureToCompare;
- int16_t structureCheck;
- int16_t propertyStorageLoad;
-#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;
- int16_t propertyStorageLoad;
-#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 {
bool isDirect : 1;
} getByIdChain;
struct {
- PolymorphicAccessStructureList* structureList;
- int listSize;
- } getByIdSelfList;
- struct {
- PolymorphicAccessStructureList* structureList;
- int listSize;
- } getByIdProtoList;
+ PolymorphicGetByIdList* list;
+ } getByIdList;
struct {
WriteBarrierBase<Structure> previousStructure;
WriteBarrierBase<Structure> structure;
struct {
PolymorphicPutByIdList* list;
} putByIdList;
+ struct {
+ PolymorphicAccessStructureList* structureList;
+ int listSize;
+ } inList;
} u;
RefPtr<JITStubRoutine> stubRoutine;
CodeLocationCall callReturnLocation;
- CodeLocationLabel hotPathBegin;
RefPtr<WatchpointsOnStructureStubInfo> watchpoints;
};
-inline void* getStructureStubInfoReturnLocation(StructureStubInfo* structureStubInfo)
+inline CodeOrigin getStructureStubInfoCodeOrigin(StructureStubInfo& structureStubInfo)
{
- return structureStubInfo->callReturnLocation.executableAddress();
+ return structureStubInfo.codeOrigin;
}
-inline unsigned getStructureStubInfoBytecodeIndex(StructureStubInfo* structureStubInfo)
-{
- return structureStubInfo->bytecodeIndex;
-}
+typedef HashMap<CodeOrigin, StructureStubInfo*, CodeOriginApproximateHash> StubInfoMap;
-} // namespace JSC
+#else
+
+typedef HashMap<int, void*> StubInfoMap;
#endif // ENABLE(JIT)
+} // namespace JSC
+
#endif // StructureStubInfo_h
projects / apple / javascriptcore.git / blobdiff