Changeset 40846 in webkit for trunk/JavaScriptCore/bytecode/CodeBlock.h

Timestamp:

Feb 10, 2009, 8:57:08 PM (16 years ago)

Author:

[email protected]

Message:

2009-02-10 Gavin Barraclough <​[email protected]>

Reviewed by Oliver Hunt.

Reduce use of void* / reinterpret_cast in JIT repatching code,
add strong types for Calls and for the various types of pointers
we retain into the JIT generated instruction stream.

No performance impact.

• assembler/AbstractMacroAssembler.h: (JSC::AbstractMacroAssembler::ImmPtr::ImmPtr): (JSC::AbstractMacroAssembler::ImmPtr::asIntptr): (JSC::AbstractMacroAssembler::Imm32::Imm32): (JSC::AbstractMacroAssembler::Label::Label): (JSC::AbstractMacroAssembler::DataLabelPtr::DataLabelPtr): (JSC::AbstractMacroAssembler::Call::Call): (JSC::AbstractMacroAssembler::Call::link): (JSC::AbstractMacroAssembler::Call::linkTo): (JSC::AbstractMacroAssembler::Jump::Jump): (JSC::AbstractMacroAssembler::Jump::linkTo): (JSC::AbstractMacroAssembler::CodeLocationCommon::CodeLocationCommon): (JSC::AbstractMacroAssembler::CodeLocationCommon::operator bool): (JSC::AbstractMacroAssembler::CodeLocationCommon::reset): (JSC::AbstractMacroAssembler::CodeLocationLabel::CodeLocationLabel): (JSC::AbstractMacroAssembler::CodeLocationLabel::addressForSwitch): (JSC::AbstractMacroAssembler::CodeLocationLabel::addressForExceptionHandler): (JSC::AbstractMacroAssembler::CodeLocationLabel::addressForJSR): (JSC::AbstractMacroAssembler::CodeLocationLabel::getJumpDestination): (JSC::AbstractMacroAssembler::CodeLocationJump::CodeLocationJump): (JSC::AbstractMacroAssembler::CodeLocationJump::relink): (JSC::AbstractMacroAssembler::CodeLocationCall::CodeLocationCall): (JSC::AbstractMacroAssembler::CodeLocationCall::relink): (JSC::AbstractMacroAssembler::CodeLocationCall::calleeReturnAddressValue): (JSC::AbstractMacroAssembler::CodeLocationDataLabel32::CodeLocationDataLabel32): (JSC::AbstractMacroAssembler::CodeLocationDataLabel32::repatch): (JSC::AbstractMacroAssembler::CodeLocationDataLabelPtr::CodeLocationDataLabelPtr): (JSC::AbstractMacroAssembler::CodeLocationDataLabelPtr::repatch): (JSC::AbstractMacroAssembler::ProcessorReturnAddress::ProcessorReturnAddress): (JSC::AbstractMacroAssembler::ProcessorReturnAddress::relinkCallerToFunction): (JSC::AbstractMacroAssembler::ProcessorReturnAddress::operator void*): (JSC::AbstractMacroAssembler::PatchBuffer::entry): (JSC::AbstractMacroAssembler::PatchBuffer::trampolineAt): (JSC::AbstractMacroAssembler::PatchBuffer::link): (JSC::AbstractMacroAssembler::PatchBuffer::linkTailRecursive): (JSC::AbstractMacroAssembler::PatchBuffer::patch): (JSC::AbstractMacroAssembler::PatchBuffer::locationOf): (JSC::AbstractMacroAssembler::PatchBuffer::returnAddressOffset): (JSC::AbstractMacroAssembler::differenceBetween): (JSC::::CodeLocationCommon::labelAtOffset): (JSC::::CodeLocationCommon::jumpAtOffset): (JSC::::CodeLocationCommon::callAtOffset): (JSC::::CodeLocationCommon::dataLabelPtrAtOffset): (JSC::::CodeLocationCommon::dataLabel32AtOffset):
• assembler/MacroAssemblerX86Common.h: (JSC::MacroAssemblerX86Common::call):
• assembler/X86Assembler.h: (JSC::X86Assembler::getCallReturnOffset):
• bytecode/CodeBlock.h: (JSC::CallLinkInfo::CallLinkInfo): (JSC::getStructureStubInfoReturnLocation): (JSC::getCallLinkInfoReturnLocation):
• bytecode/Instruction.h: (JSC::PolymorphicAccessStructureList::PolymorphicStubInfo::set): (JSC::PolymorphicAccessStructureList::PolymorphicAccessStructureList):
• bytecode/JumpTable.h: (JSC::StringJumpTable::ctiForValue): (JSC::SimpleJumpTable::ctiForValue):
• bytecode/StructureStubInfo.h: (JSC::StructureStubInfo::StructureStubInfo):
• bytecompiler/BytecodeGenerator.cpp: (JSC::BytecodeGenerator::emitCatch): (JSC::prepareJumpTableForStringSwitch):
• interpreter/Interpreter.cpp: (JSC::Interpreter::cti_op_get_by_id_self_fail): (JSC::getPolymorphicAccessStructureListSlot): (JSC::Interpreter::cti_op_throw): (JSC::Interpreter::cti_op_switch_imm): (JSC::Interpreter::cti_op_switch_char): (JSC::Interpreter::cti_op_switch_string): (JSC::Interpreter::cti_vm_throw):
• jit/JIT.cpp: (JSC::ctiSetReturnAddress): (JSC::ctiPatchCallByReturnAddress): (JSC::JIT::privateCompile): (JSC::JIT::privateCompileCTIMachineTrampolines):
• jit/JIT.h: (JSC::CallRecord::CallRecord): (JSC::JIT::compileGetByIdSelf): (JSC::JIT::compileGetByIdProto): (JSC::JIT::compileGetByIdChain): (JSC::JIT::compilePutByIdReplace): (JSC::JIT::compilePutByIdTransition): (JSC::JIT::compilePatchGetArrayLength): (JSC::JIT::emitCTICall):
• jit/JITCall.cpp: (JSC::JIT::unlinkCall): (JSC::JIT::linkCall):
• jit/JITInlineMethods.h: (JSC::JIT::emitNakedCall): (JSC::JIT::emitCTICall_internal):
• jit/JITPropertyAccess.cpp: (JSC::JIT::compileGetByIdSlowCase): (JSC::JIT::compilePutByIdSlowCase): (JSC::JIT::privateCompilePutByIdTransition): (JSC::JIT::patchGetByIdSelf): (JSC::JIT::patchPutByIdReplace): (JSC::JIT::privateCompilePatchGetArrayLength): (JSC::JIT::privateCompileGetByIdSelf): (JSC::JIT::privateCompileGetByIdProto): (JSC::JIT::privateCompileGetByIdSelfList): (JSC::JIT::privateCompileGetByIdProtoList): (JSC::JIT::privateCompileGetByIdChainList): (JSC::JIT::privateCompileGetByIdChain): (JSC::JIT::privateCompilePutByIdReplace):

File:

• trunk/JavaScriptCore/bytecode/CodeBlock.h (modified) (3 diffs)

trunk/JavaScriptCore/bytecode/CodeBlock.h

@@ -60 +60 @@
         uint32_t scopeDepth;
 #if ENABLE(JIT)
-        void* nativeCode;
+        MacroAssembler::CodeLocationLabel nativeCode;
 #endif
     };
@@ -119 +119 @@
     struct CallLinkInfo {
         CallLinkInfo()
-            : callReturnLocation(0)
-            , hotPathBegin(0)
-            , hotPathOther(0)
-            , coldPathOther(0)
-            , callee(0)
+            : callee(0)
         {
         }
     
         unsigned bytecodeIndex;
-        void* callReturnLocation;
-        void* hotPathBegin;
-        void* hotPathOther;
-        void* coldPathOther;
+        MacroAssembler::CodeLocationCall callReturnLocation;
+        MacroAssembler::CodeLocationDataLabelPtr hotPathBegin;
+        MacroAssembler::CodeLocationCall hotPathOther;
+        MacroAssembler::CodeLocationLabel coldPathOther;
         CodeBlock* callee;
         unsigned position;
@@ -182 +178 @@
     inline void* getStructureStubInfoReturnLocation(StructureStubInfo* structureStubInfo)
     {
-        return structureStubInfo->callReturnLocation;
+        return structureStubInfo->callReturnLocation.calleeReturnAddressValue();
     }
 
     inline void* getCallLinkInfoReturnLocation(CallLinkInfo* callLinkInfo)
     {
-        return callLinkInfo->callReturnLocation;
+        return callLinkInfo->callReturnLocation.calleeReturnAddressValue();
     }