/*
* Copyright (C) 2009 Apple Inc. All rights reserved.
+ * Copyright (C) 2010 Patrick Gansterer <paroga@paroga.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
*/
#include "config.h"
-#include "JIT.h"
-
-#if ENABLE(JIT)
-
-#include "JITInlineMethods.h"
-#include "JITStubCall.h"
-#include "JSArray.h"
-#include "JSCell.h"
-#include "JSFunction.h"
-#include "JSPropertyNameIterator.h"
-#include "LinkBuffer.h"
-
-namespace JSC {
-
-#if USE(JSVALUE32_64)
-
-void JIT::privateCompileCTIMachineTrampolines(RefPtr<ExecutablePool>* executablePool, JSGlobalData* globalData, CodePtr* ctiStringLengthTrampoline, CodePtr* ctiVirtualCallLink, CodePtr* ctiVirtualCall, CodePtr* ctiNativeCallThunk)
-{
-#if ENABLE(JIT_OPTIMIZE_PROPERTY_ACCESS)
- // (1) This function provides fast property access for string length
- Label stringLengthBegin = align();
-
- // regT0 holds payload, regT1 holds tag
-
- Jump string_failureCases1 = branch32(NotEqual, regT1, Imm32(JSValue::CellTag));
- Jump string_failureCases2 = branchPtr(NotEqual, Address(regT0), ImmPtr(m_globalData->jsStringVPtr));
-
- // Checks out okay! - get the length from the Ustring.
- load32(Address(regT0, OBJECT_OFFSETOF(JSString, m_stringLength)), regT2);
-
- Jump string_failureCases3 = branch32(Above, regT2, Imm32(INT_MAX));
- move(regT2, regT0);
- move(Imm32(JSValue::Int32Tag), regT1);
-
- ret();
-#endif
-
- // (2) Trampolines for the slow cases of op_call / op_call_eval / op_construct.
-
-#if ENABLE(JIT_OPTIMIZE_CALL)
- // VirtualCallLink Trampoline
- // regT0 holds callee, regT1 holds argCount. regT2 will hold the FunctionExecutable.
- Label virtualCallLinkBegin = align();
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_executable)), regT2);
-
- Jump isNativeFunc2 = branch32(Equal, Address(regT2, OBJECT_OFFSETOF(FunctionExecutable, m_numParameters)), Imm32(0));
-
- Jump hasCodeBlock2 = branch32(GreaterThan, Address(regT2, OBJECT_OFFSETOF(FunctionExecutable, m_numParameters)), Imm32(0));
- preserveReturnAddressAfterCall(regT3);
- restoreArgumentReference();
- Call callJSFunction2 = call();
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_executable)), regT2);
- emitGetJITStubArg(2, regT1); // argCount
- restoreReturnAddressBeforeReturn(regT3);
- hasCodeBlock2.link(this);
-
- // Check argCount matches callee arity.
- Jump arityCheckOkay2 = branch32(Equal, Address(regT2, OBJECT_OFFSETOF(FunctionExecutable, m_numParameters)), regT1);
- preserveReturnAddressAfterCall(regT3);
- emitPutJITStubArg(regT3, 1); // return address
- restoreArgumentReference();
- Call callArityCheck2 = call();
- move(regT1, callFrameRegister);
- emitGetJITStubArg(2, regT1); // argCount
- restoreReturnAddressBeforeReturn(regT3);
- arityCheckOkay2.link(this);
-
- isNativeFunc2.link(this);
-
- compileOpCallInitializeCallFrame();
-
- preserveReturnAddressAfterCall(regT3);
- emitPutJITStubArg(regT3, 1); // return address
- restoreArgumentReference();
- Call callLazyLinkCall = call();
- restoreReturnAddressBeforeReturn(regT3);
- jump(regT0);
-#endif // ENABLE(JIT_OPTIMIZE_CALL)
-
- // VirtualCall Trampoline
- // regT0 holds callee, regT1 holds argCount. regT2 will hold the FunctionExecutable.
- Label virtualCallBegin = align();
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_executable)), regT2);
-
- Jump isNativeFunc3 = branch32(Equal, Address(regT2, OBJECT_OFFSETOF(FunctionExecutable, m_numParameters)), Imm32(0));
-
- Jump hasCodeBlock3 = branch32(GreaterThan, Address(regT2, OBJECT_OFFSETOF(FunctionExecutable, m_numParameters)), Imm32(0));
- preserveReturnAddressAfterCall(regT3);
- restoreArgumentReference();
- Call callJSFunction1 = call();
- emitGetJITStubArg(2, regT1); // argCount
- restoreReturnAddressBeforeReturn(regT3);
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_executable)), regT2);
- hasCodeBlock3.link(this);
-
- // Check argCount matches callee arity.
- Jump arityCheckOkay3 = branch32(Equal, Address(regT2, OBJECT_OFFSETOF(FunctionExecutable, m_numParameters)), regT1);
- preserveReturnAddressAfterCall(regT3);
- emitPutJITStubArg(regT3, 1); // return address
- restoreArgumentReference();
- Call callArityCheck1 = call();
- move(regT1, callFrameRegister);
- emitGetJITStubArg(2, regT1); // argCount
- restoreReturnAddressBeforeReturn(regT3);
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_executable)), regT2);
- arityCheckOkay3.link(this);
-
- isNativeFunc3.link(this);
-
- compileOpCallInitializeCallFrame();
- loadPtr(Address(regT2, OBJECT_OFFSETOF(FunctionExecutable, m_jitCode)), regT0);
- jump(regT0);
-
-#if CPU(X86) || CPU(ARM_TRADITIONAL)
- Label nativeCallThunk = align();
- preserveReturnAddressAfterCall(regT0);
- emitPutToCallFrameHeader(regT0, RegisterFile::ReturnPC); // Push return address
-
- // Load caller frame's scope chain into this callframe so that whatever we call can
- // get to its global data.
- emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, regT1);
- emitGetFromCallFrameHeaderPtr(RegisterFile::ScopeChain, regT1, regT1);
- emitPutToCallFrameHeader(regT1, RegisterFile::ScopeChain);
-
-#if CPU(X86)
- emitGetFromCallFrameHeader32(RegisterFile::ArgumentCount, regT0);
-
- /* We have two structs that we use to describe the stackframe we set up for our
- * call to native code. NativeCallFrameStructure describes the how we set up the stack
- * in advance of the call. NativeFunctionCalleeSignature describes the callframe
- * as the native code expects it. We do this as we are using the fastcall calling
- * convention which results in the callee popping its arguments off the stack, but
- * not the rest of the callframe so we need a nice way to ensure we increment the
- * stack pointer by the right amount after the call.
- */
-
-#if COMPILER(MSVC) || OS(LINUX)
-#if COMPILER(MSVC)
-#pragma pack(push)
-#pragma pack(4)
-#endif // COMPILER(MSVC)
- struct NativeCallFrameStructure {
- // CallFrame* callFrame; // passed in EDX
- JSObject* callee;
- JSValue thisValue;
- ArgList* argPointer;
- ArgList args;
- JSValue result;
- };
- struct NativeFunctionCalleeSignature {
- JSObject* callee;
- JSValue thisValue;
- ArgList* argPointer;
- };
-#if COMPILER(MSVC)
-#pragma pack(pop)
-#endif // COMPILER(MSVC)
-#else
- struct NativeCallFrameStructure {
- // CallFrame* callFrame; // passed in ECX
- // JSObject* callee; // passed in EDX
- JSValue thisValue;
- ArgList* argPointer;
- ArgList args;
- };
- struct NativeFunctionCalleeSignature {
- JSValue thisValue;
- ArgList* argPointer;
- };
-#endif
-
- const int NativeCallFrameSize = (sizeof(NativeCallFrameStructure) + 15) & ~15;
- // Allocate system stack frame
- subPtr(Imm32(NativeCallFrameSize), stackPointerRegister);
-
- // Set up arguments
- subPtr(Imm32(1), regT0); // Don't include 'this' in argcount
-
- // push argcount
- storePtr(regT0, Address(stackPointerRegister, OBJECT_OFFSETOF(NativeCallFrameStructure, args) + OBJECT_OFFSETOF(ArgList, m_argCount)));
-
- // Calculate the start of the callframe header, and store in regT1
- addPtr(Imm32(-RegisterFile::CallFrameHeaderSize * (int)sizeof(Register)), callFrameRegister, regT1);
-
- // Calculate start of arguments as callframe header - sizeof(Register) * argcount (regT0)
- mul32(Imm32(sizeof(Register)), regT0, regT0);
- subPtr(regT0, regT1);
- storePtr(regT1, Address(stackPointerRegister, OBJECT_OFFSETOF(NativeCallFrameStructure, args) + OBJECT_OFFSETOF(ArgList, m_args)));
-
- // ArgList is passed by reference so is stackPointerRegister + 4 * sizeof(Register)
- addPtr(Imm32(OBJECT_OFFSETOF(NativeCallFrameStructure, args)), stackPointerRegister, regT0);
- storePtr(regT0, Address(stackPointerRegister, OBJECT_OFFSETOF(NativeCallFrameStructure, argPointer)));
-
- // regT1 currently points to the first argument, regT1 - sizeof(Register) points to 'this'
- loadPtr(Address(regT1, -(int)sizeof(Register) + OBJECT_OFFSETOF(JSValue, u.asBits.payload)), regT2);
- loadPtr(Address(regT1, -(int)sizeof(Register) + OBJECT_OFFSETOF(JSValue, u.asBits.tag)), regT3);
- storePtr(regT2, Address(stackPointerRegister, OBJECT_OFFSETOF(NativeCallFrameStructure, thisValue) + OBJECT_OFFSETOF(JSValue, u.asBits.payload)));
- storePtr(regT3, Address(stackPointerRegister, OBJECT_OFFSETOF(NativeCallFrameStructure, thisValue) + OBJECT_OFFSETOF(JSValue, u.asBits.tag)));
-
-#if COMPILER(MSVC) || OS(LINUX)
- // ArgList is passed by reference so is stackPointerRegister + 4 * sizeof(Register)
- addPtr(Imm32(OBJECT_OFFSETOF(NativeCallFrameStructure, result)), stackPointerRegister, X86Registers::ecx);
-
- // Plant callee
- emitGetFromCallFrameHeaderPtr(RegisterFile::Callee, X86Registers::eax);
- storePtr(X86Registers::eax, Address(stackPointerRegister, OBJECT_OFFSETOF(NativeCallFrameStructure, callee)));
-
- // Plant callframe
- move(callFrameRegister, X86Registers::edx);
-
- call(Address(X86Registers::eax, OBJECT_OFFSETOF(JSFunction, m_data)));
-
- // JSValue is a non-POD type, so eax points to it
- emitLoad(0, regT1, regT0, X86Registers::eax);
-#else
- emitGetFromCallFrameHeaderPtr(RegisterFile::Callee, X86Registers::edx); // callee
- move(callFrameRegister, X86Registers::ecx); // callFrame
- call(Address(X86Registers::edx, OBJECT_OFFSETOF(JSFunction, m_data)));
-#endif
-
- // We've put a few temporaries on the stack in addition to the actual arguments
- // so pull them off now
- addPtr(Imm32(NativeCallFrameSize - sizeof(NativeFunctionCalleeSignature)), stackPointerRegister);
-
-#elif CPU(ARM_TRADITIONAL)
- emitGetFromCallFrameHeader32(RegisterFile::ArgumentCount, regT0);
-
- // Allocate stack space for our arglist
- COMPILE_ASSERT((sizeof(ArgList) & 0x7) == 0 && sizeof(JSValue) == 8 && sizeof(Register) == 8, ArgList_should_by_8byte_aligned);
- subPtr(Imm32(sizeof(ArgList)), stackPointerRegister);
-
- // Set up arguments
- subPtr(Imm32(1), regT0); // Don't include 'this' in argcount
-
- // Push argcount
- storePtr(regT0, Address(stackPointerRegister, OBJECT_OFFSETOF(ArgList, m_argCount)));
-
- // Calculate the start of the callframe header, and store in regT1
- move(callFrameRegister, regT1);
- sub32(Imm32(RegisterFile::CallFrameHeaderSize * (int32_t)sizeof(Register)), regT1);
-
- // Calculate start of arguments as callframe header - sizeof(Register) * argcount (regT1)
- mul32(Imm32(sizeof(Register)), regT0, regT0);
- subPtr(regT0, regT1);
-
- // push pointer to arguments
- storePtr(regT1, Address(stackPointerRegister, OBJECT_OFFSETOF(ArgList, m_args)));
-
- // Argument passing method:
- // r0 - points to return value
- // r1 - callFrame
- // r2 - callee
- // stack: this(JSValue) and a pointer to ArgList
-
- move(stackPointerRegister, regT3);
- subPtr(Imm32(8), stackPointerRegister);
- move(stackPointerRegister, regT0);
- subPtr(Imm32(8 + 4 + 4 /* padding */), stackPointerRegister);
-
- // Setup arg4:
- storePtr(regT3, Address(stackPointerRegister, 8));
-
- // Setup arg3
- // regT1 currently points to the first argument, regT1-sizeof(Register) points to 'this'
- load32(Address(regT1, -(int32_t)sizeof(void*) * 2), regT3);
- storePtr(regT3, Address(stackPointerRegister, 0));
- load32(Address(regT1, -(int32_t)sizeof(void*)), regT3);
- storePtr(regT3, Address(stackPointerRegister, 4));
-
- // Setup arg2:
- emitGetFromCallFrameHeaderPtr(RegisterFile::Callee, regT2);
-
- // Setup arg1:
- move(callFrameRegister, regT1);
-
- call(Address(regT2, OBJECT_OFFSETOF(JSFunction, m_data)));
-
- // Load return value
- load32(Address(stackPointerRegister, 16), regT0);
- load32(Address(stackPointerRegister, 20), regT1);
-
- addPtr(Imm32(sizeof(ArgList) + 16 + 8), stackPointerRegister);
-#endif
-
- // Check for an exception
- move(ImmPtr(&globalData->exception), regT2);
- Jump sawException = branch32(NotEqual, tagFor(0, regT2), Imm32(JSValue::EmptyValueTag));
-
- // Grab the return address.
- emitGetFromCallFrameHeaderPtr(RegisterFile::ReturnPC, regT3);
-
- // Restore our caller's "r".
- emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, callFrameRegister);
-
- // Return.
- restoreReturnAddressBeforeReturn(regT3);
- ret();
-
- // Handle an exception
- sawException.link(this);
- // Grab the return address.
- emitGetFromCallFrameHeaderPtr(RegisterFile::ReturnPC, regT1);
- move(ImmPtr(&globalData->exceptionLocation), regT2);
- storePtr(regT1, regT2);
- move(ImmPtr(FunctionPtr(ctiVMThrowTrampoline).value()), regT2);
- emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, callFrameRegister);
- poke(callFrameRegister, OBJECT_OFFSETOF(struct JITStackFrame, callFrame) / sizeof (void*));
- restoreReturnAddressBeforeReturn(regT2);
- ret();
-
-#elif ENABLE(JIT_OPTIMIZE_NATIVE_CALL)
-#error "JIT_OPTIMIZE_NATIVE_CALL not yet supported on this platform."
-#else
- breakpoint();
-#endif
-
-#if ENABLE(JIT_OPTIMIZE_PROPERTY_ACCESS)
- Call string_failureCases1Call = makeTailRecursiveCall(string_failureCases1);
- Call string_failureCases2Call = makeTailRecursiveCall(string_failureCases2);
- Call string_failureCases3Call = makeTailRecursiveCall(string_failureCases3);
-#endif
-
- // All trampolines constructed! copy the code, link up calls, and set the pointers on the Machine object.
- LinkBuffer patchBuffer(this, m_globalData->executableAllocator.poolForSize(m_assembler.size()));
-
-#if ENABLE(JIT_OPTIMIZE_PROPERTY_ACCESS)
- patchBuffer.link(string_failureCases1Call, FunctionPtr(cti_op_get_by_id_string_fail));
- patchBuffer.link(string_failureCases2Call, FunctionPtr(cti_op_get_by_id_string_fail));
- patchBuffer.link(string_failureCases3Call, FunctionPtr(cti_op_get_by_id_string_fail));
-#endif
- patchBuffer.link(callArityCheck1, FunctionPtr(cti_op_call_arityCheck));
- patchBuffer.link(callJSFunction1, FunctionPtr(cti_op_call_JSFunction));
-#if ENABLE(JIT_OPTIMIZE_CALL)
- patchBuffer.link(callArityCheck2, FunctionPtr(cti_op_call_arityCheck));
- patchBuffer.link(callJSFunction2, FunctionPtr(cti_op_call_JSFunction));
- patchBuffer.link(callLazyLinkCall, FunctionPtr(cti_vm_lazyLinkCall));
-#endif
-
- CodeRef finalCode = patchBuffer.finalizeCode();
- *executablePool = finalCode.m_executablePool;
-
- *ctiVirtualCall = trampolineAt(finalCode, virtualCallBegin);
- *ctiNativeCallThunk = trampolineAt(finalCode, nativeCallThunk);
-#if ENABLE(JIT_OPTIMIZE_PROPERTY_ACCESS)
- *ctiStringLengthTrampoline = trampolineAt(finalCode, stringLengthBegin);
-#else
- UNUSED_PARAM(ctiStringLengthTrampoline);
-#endif
-#if ENABLE(JIT_OPTIMIZE_CALL)
- *ctiVirtualCallLink = trampolineAt(finalCode, virtualCallLinkBegin);
-#else
- UNUSED_PARAM(ctiVirtualCallLink);
-#endif
-}
-
-void JIT::emit_op_mov(Instruction* currentInstruction)
-{
- unsigned dst = currentInstruction[1].u.operand;
- unsigned src = currentInstruction[2].u.operand;
-
- if (m_codeBlock->isConstantRegisterIndex(src))
- emitStore(dst, getConstantOperand(src));
- else {
- emitLoad(src, regT1, regT0);
- emitStore(dst, regT1, regT0);
- map(m_bytecodeIndex + OPCODE_LENGTH(op_mov), dst, regT1, regT0);
- }
-}
-
-void JIT::emit_op_end(Instruction* currentInstruction)
-{
- if (m_codeBlock->needsFullScopeChain())
- JITStubCall(this, cti_op_end).call();
- ASSERT(returnValueRegister != callFrameRegister);
- emitLoad(currentInstruction[1].u.operand, regT1, regT0);
- restoreReturnAddressBeforeReturn(Address(callFrameRegister, RegisterFile::ReturnPC * static_cast<int>(sizeof(Register))));
- ret();
-}
-
-void JIT::emit_op_jmp(Instruction* currentInstruction)
-{
- unsigned target = currentInstruction[1].u.operand;
- addJump(jump(), target);
-}
-
-void JIT::emit_op_loop_if_lesseq(Instruction* currentInstruction)
-{
- unsigned op1 = currentInstruction[1].u.operand;
- unsigned op2 = currentInstruction[2].u.operand;
- unsigned target = currentInstruction[3].u.operand;
-
- emitTimeoutCheck();
-
- if (isOperandConstantImmediateInt(op1)) {
- emitLoad(op2, regT1, regT0);
- addSlowCase(branch32(NotEqual, regT1, Imm32(JSValue::Int32Tag)));
- addJump(branch32(GreaterThanOrEqual, regT0, Imm32(getConstantOperand(op1).asInt32())), target);
- return;
- }
-
- if (isOperandConstantImmediateInt(op2)) {
- emitLoad(op1, regT1, regT0);
- addSlowCase(branch32(NotEqual, regT1, Imm32(JSValue::Int32Tag)));
- addJump(branch32(LessThanOrEqual, regT0, Imm32(getConstantOperand(op2).asInt32())), target);
- return;
- }
-
- emitLoad2(op1, regT1, regT0, op2, regT3, regT2);
- addSlowCase(branch32(NotEqual, regT1, Imm32(JSValue::Int32Tag)));
- addSlowCase(branch32(NotEqual, regT3, Imm32(JSValue::Int32Tag)));
- addJump(branch32(LessThanOrEqual, regT0, regT2), target);
-}
-
-void JIT::emitSlow_op_loop_if_lesseq(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
-{
- unsigned op1 = currentInstruction[1].u.operand;
- unsigned op2 = currentInstruction[2].u.operand;
- unsigned target = currentInstruction[3].u.operand;
-
- if (!isOperandConstantImmediateInt(op1) && !isOperandConstantImmediateInt(op2))
- linkSlowCase(iter); // int32 check
- linkSlowCase(iter); // int32 check
-
- JITStubCall stubCall(this, cti_op_loop_if_lesseq);
- stubCall.addArgument(op1);
- stubCall.addArgument(op2);
- stubCall.call();
- emitJumpSlowToHot(branchTest32(NonZero, regT0), target);
-}
-
-void JIT::emit_op_new_object(Instruction* currentInstruction)
-{
- JITStubCall(this, cti_op_new_object).call(currentInstruction[1].u.operand);
-}
-
-void JIT::emit_op_instanceof(Instruction* currentInstruction)
-{
- unsigned dst = currentInstruction[1].u.operand;
- unsigned value = currentInstruction[2].u.operand;
- unsigned baseVal = currentInstruction[3].u.operand;
- unsigned proto = currentInstruction[4].u.operand;
-
- // Load the operands into registers.
- // We use regT0 for baseVal since we will be done with this first, and we can then use it for the result.
- emitLoadPayload(value, regT2);
- emitLoadPayload(baseVal, regT0);
- emitLoadPayload(proto, regT1);
-
- // Check that value, baseVal, and proto are cells.
- emitJumpSlowCaseIfNotJSCell(value);
- emitJumpSlowCaseIfNotJSCell(baseVal);
- emitJumpSlowCaseIfNotJSCell(proto);
-
- // Check that baseVal 'ImplementsDefaultHasInstance'.
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSCell, m_structure)), regT0);
- addSlowCase(branchTest32(Zero, Address(regT0, OBJECT_OFFSETOF(Structure, m_typeInfo.m_flags)), Imm32(ImplementsDefaultHasInstance)));
-
- // Optimistically load the result true, and start looping.
- // Initially, regT1 still contains proto and regT2 still contains value.
- // As we loop regT2 will be updated with its prototype, recursively walking the prototype chain.
- move(Imm32(JSValue::TrueTag), regT0);
- Label loop(this);
-
- // Load the prototype of the cell in regT2. If this is equal to regT1 - WIN!
- // Otherwise, check if we've hit null - if we have then drop out of the loop, if not go again.
- loadPtr(Address(regT2, OBJECT_OFFSETOF(JSCell, m_structure)), regT2);
- load32(Address(regT2, OBJECT_OFFSETOF(Structure, m_prototype) + OBJECT_OFFSETOF(JSValue, u.asBits.payload)), regT2);
- Jump isInstance = branchPtr(Equal, regT2, regT1);
- branchTest32(NonZero, regT2).linkTo(loop, this);
-
- // We get here either by dropping out of the loop, or if value was not an Object. Result is false.
- move(Imm32(JSValue::FalseTag), regT0);
-
- // isInstance jumps right down to here, to skip setting the result to false (it has already set true).
- isInstance.link(this);
- emitStoreBool(dst, regT0);
-}
-
-void JIT::emitSlow_op_instanceof(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
-{
- unsigned dst = currentInstruction[1].u.operand;
- unsigned value = currentInstruction[2].u.operand;
- unsigned baseVal = currentInstruction[3].u.operand;
- unsigned proto = currentInstruction[4].u.operand;
-
- linkSlowCaseIfNotJSCell(iter, value);
- linkSlowCaseIfNotJSCell(iter, baseVal);
- linkSlowCaseIfNotJSCell(iter, proto);
- linkSlowCase(iter);
-
- JITStubCall stubCall(this, cti_op_instanceof);
- stubCall.addArgument(value);
- stubCall.addArgument(baseVal);
- stubCall.addArgument(proto);
- stubCall.call(dst);
-}
-
-void JIT::emit_op_new_func(Instruction* currentInstruction)
-{
- JITStubCall stubCall(this, cti_op_new_func);
- stubCall.addArgument(ImmPtr(m_codeBlock->functionDecl(currentInstruction[2].u.operand)));
- stubCall.call(currentInstruction[1].u.operand);
-}
-
-void JIT::emit_op_get_global_var(Instruction* currentInstruction)
-{
- int dst = currentInstruction[1].u.operand;
- JSGlobalObject* globalObject = static_cast<JSGlobalObject*>(currentInstruction[2].u.jsCell);
- ASSERT(globalObject->isGlobalObject());
- int index = currentInstruction[3].u.operand;
-
- loadPtr(&globalObject->d()->registers, regT2);
-
- emitLoad(index, regT1, regT0, regT2);
- emitStore(dst, regT1, regT0);
- map(m_bytecodeIndex + OPCODE_LENGTH(op_get_global_var), dst, regT1, regT0);
-}
-
-void JIT::emit_op_put_global_var(Instruction* currentInstruction)
-{
- JSGlobalObject* globalObject = static_cast<JSGlobalObject*>(currentInstruction[1].u.jsCell);
- ASSERT(globalObject->isGlobalObject());
- int index = currentInstruction[2].u.operand;
- int value = currentInstruction[3].u.operand;
-
- emitLoad(value, regT1, regT0);
-
- loadPtr(&globalObject->d()->registers, regT2);
- emitStore(index, regT1, regT0, regT2);
- map(m_bytecodeIndex + OPCODE_LENGTH(op_put_global_var), value, regT1, regT0);
-}
-
-void JIT::emit_op_get_scoped_var(Instruction* currentInstruction)
-{
- int dst = currentInstruction[1].u.operand;
- int index = currentInstruction[2].u.operand;
- int skip = currentInstruction[3].u.operand + m_codeBlock->needsFullScopeChain();
-
- emitGetFromCallFrameHeaderPtr(RegisterFile::ScopeChain, regT2);
- while (skip--)
- loadPtr(Address(regT2, OBJECT_OFFSETOF(ScopeChainNode, next)), regT2);
-
- loadPtr(Address(regT2, OBJECT_OFFSETOF(ScopeChainNode, object)), regT2);
- loadPtr(Address(regT2, OBJECT_OFFSETOF(JSVariableObject, d)), regT2);
- loadPtr(Address(regT2, OBJECT_OFFSETOF(JSVariableObject::JSVariableObjectData, registers)), regT2);
-
- emitLoad(index, regT1, regT0, regT2);
- emitStore(dst, regT1, regT0);
- map(m_bytecodeIndex + OPCODE_LENGTH(op_get_scoped_var), dst, regT1, regT0);
-}
-
-void JIT::emit_op_put_scoped_var(Instruction* currentInstruction)
-{
- int index = currentInstruction[1].u.operand;
- int skip = currentInstruction[2].u.operand + m_codeBlock->needsFullScopeChain();
- int value = currentInstruction[3].u.operand;
-
- emitLoad(value, regT1, regT0);
-
- emitGetFromCallFrameHeaderPtr(RegisterFile::ScopeChain, regT2);
- while (skip--)
- loadPtr(Address(regT2, OBJECT_OFFSETOF(ScopeChainNode, next)), regT2);
-
- loadPtr(Address(regT2, OBJECT_OFFSETOF(ScopeChainNode, object)), regT2);
- loadPtr(Address(regT2, OBJECT_OFFSETOF(JSVariableObject, d)), regT2);
- loadPtr(Address(regT2, OBJECT_OFFSETOF(JSVariableObject::JSVariableObjectData, registers)), regT2);
-
- emitStore(index, regT1, regT0, regT2);
- map(m_bytecodeIndex + OPCODE_LENGTH(op_put_scoped_var), value, regT1, regT0);
-}
-
-void JIT::emit_op_tear_off_activation(Instruction* currentInstruction)
-{
- JITStubCall stubCall(this, cti_op_tear_off_activation);
- stubCall.addArgument(currentInstruction[1].u.operand);
- stubCall.call();
-}
-
-void JIT::emit_op_tear_off_arguments(Instruction*)
-{
- JITStubCall(this, cti_op_tear_off_arguments).call();
-}
-
-void JIT::emit_op_new_array(Instruction* currentInstruction)
-{
- JITStubCall stubCall(this, cti_op_new_array);
- stubCall.addArgument(Imm32(currentInstruction[2].u.operand));
- stubCall.addArgument(Imm32(currentInstruction[3].u.operand));
- stubCall.call(currentInstruction[1].u.operand);
-}
-
-void JIT::emit_op_resolve(Instruction* currentInstruction)
-{
- JITStubCall stubCall(this, cti_op_resolve);
- stubCall.addArgument(ImmPtr(&m_codeBlock->identifier(currentInstruction[2].u.operand)));
- stubCall.call(currentInstruction[1].u.operand);
-}
-
-void JIT::emit_op_to_primitive(Instruction* currentInstruction)
-{
- int dst = currentInstruction[1].u.operand;
- int src = currentInstruction[2].u.operand;
-
- emitLoad(src, regT1, regT0);
-
- Jump isImm = branch32(NotEqual, regT1, Imm32(JSValue::CellTag));
- addSlowCase(branchPtr(NotEqual, Address(regT0), ImmPtr(m_globalData->jsStringVPtr)));
- isImm.link(this);
-
- if (dst != src)
- emitStore(dst, regT1, regT0);
- map(m_bytecodeIndex + OPCODE_LENGTH(op_to_primitive), dst, regT1, regT0);
-}
-
-void JIT::emitSlow_op_to_primitive(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
-{
- int dst = currentInstruction[1].u.operand;
-
- linkSlowCase(iter);
-
- JITStubCall stubCall(this, cti_op_to_primitive);
- stubCall.addArgument(regT1, regT0);
- stubCall.call(dst);
-}
-
-void JIT::emit_op_strcat(Instruction* currentInstruction)
-{
- JITStubCall stubCall(this, cti_op_strcat);
- stubCall.addArgument(Imm32(currentInstruction[2].u.operand));
- stubCall.addArgument(Imm32(currentInstruction[3].u.operand));
- stubCall.call(currentInstruction[1].u.operand);
-}
-
-void JIT::emit_op_resolve_base(Instruction* currentInstruction)
-{
- JITStubCall stubCall(this, cti_op_resolve_base);
- stubCall.addArgument(ImmPtr(&m_codeBlock->identifier(currentInstruction[2].u.operand)));
- stubCall.call(currentInstruction[1].u.operand);
-}
-
-void JIT::emit_op_resolve_skip(Instruction* currentInstruction)
-{
- JITStubCall stubCall(this, cti_op_resolve_skip);
- stubCall.addArgument(ImmPtr(&m_codeBlock->identifier(currentInstruction[2].u.operand)));
- stubCall.addArgument(Imm32(currentInstruction[3].u.operand + m_codeBlock->needsFullScopeChain()));
- stubCall.call(currentInstruction[1].u.operand);
-}
-
-void JIT::emit_op_resolve_global(Instruction* currentInstruction)
-{
- // FIXME: Optimize to use patching instead of so many memory accesses.
-
- unsigned dst = currentInstruction[1].u.operand;
- void* globalObject = currentInstruction[2].u.jsCell;
-
- unsigned currentIndex = m_globalResolveInfoIndex++;
- void* structureAddress = &(m_codeBlock->globalResolveInfo(currentIndex).structure);
- void* offsetAddr = &(m_codeBlock->globalResolveInfo(currentIndex).offset);
-
- // Verify structure.
- move(ImmPtr(globalObject), regT0);
- loadPtr(structureAddress, regT1);
- addSlowCase(branchPtr(NotEqual, regT1, Address(regT0, OBJECT_OFFSETOF(JSCell, m_structure))));
-
- // Load property.
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSGlobalObject, m_externalStorage)), regT2);
- load32(offsetAddr, regT3);
- load32(BaseIndex(regT2, regT3, TimesEight), regT0); // payload
- load32(BaseIndex(regT2, regT3, TimesEight, 4), regT1); // tag
- emitStore(dst, regT1, regT0);
- map(m_bytecodeIndex + OPCODE_LENGTH(op_resolve_global), dst, regT1, regT0);
-}
-
-void JIT::emitSlow_op_resolve_global(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
-{
- unsigned dst = currentInstruction[1].u.operand;
- void* globalObject = currentInstruction[2].u.jsCell;
- Identifier* ident = &m_codeBlock->identifier(currentInstruction[3].u.operand);
-
- unsigned currentIndex = m_globalResolveInfoIndex++;
-
- linkSlowCase(iter);
- JITStubCall stubCall(this, cti_op_resolve_global);
- stubCall.addArgument(ImmPtr(globalObject));
- stubCall.addArgument(ImmPtr(ident));
- stubCall.addArgument(Imm32(currentIndex));
- stubCall.call(dst);
-}
-
-void JIT::emit_op_not(Instruction* currentInstruction)
-{
- unsigned dst = currentInstruction[1].u.operand;
- unsigned src = currentInstruction[2].u.operand;
-
- emitLoadTag(src, regT0);
-
- xor32(Imm32(JSValue::FalseTag), regT0);
- addSlowCase(branchTest32(NonZero, regT0, Imm32(~1)));
- xor32(Imm32(JSValue::TrueTag), regT0);
-
- emitStoreBool(dst, regT0, (dst == src));
-}
-
-void JIT::emitSlow_op_not(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
-{
- unsigned dst = currentInstruction[1].u.operand;
- unsigned src = currentInstruction[2].u.operand;
-
- linkSlowCase(iter);
-
- JITStubCall stubCall(this, cti_op_not);
- stubCall.addArgument(src);
- stubCall.call(dst);
-}
-
-void JIT::emit_op_jfalse(Instruction* currentInstruction)
-{
- unsigned cond = currentInstruction[1].u.operand;
- unsigned target = currentInstruction[2].u.operand;
-
- emitLoad(cond, regT1, regT0);
-
- Jump isTrue = branch32(Equal, regT1, Imm32(JSValue::TrueTag));
- addJump(branch32(Equal, regT1, Imm32(JSValue::FalseTag)), target);
-
- Jump isNotInteger = branch32(NotEqual, regT1, Imm32(JSValue::Int32Tag));
- Jump isTrue2 = branch32(NotEqual, regT0, Imm32(0));
- addJump(jump(), target);
-
- if (supportsFloatingPoint()) {
- isNotInteger.link(this);
-
- addSlowCase(branch32(Above, regT1, Imm32(JSValue::LowestTag)));
-
- zeroDouble(fpRegT0);
- emitLoadDouble(cond, fpRegT1);
- addJump(branchDouble(DoubleEqualOrUnordered, fpRegT0, fpRegT1), target);
- } else
- addSlowCase(isNotInteger);
-
- isTrue.link(this);
- isTrue2.link(this);
-}
-
-void JIT::emitSlow_op_jfalse(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
-{
- unsigned cond = currentInstruction[1].u.operand;
- unsigned target = currentInstruction[2].u.operand;
-
- linkSlowCase(iter);
- JITStubCall stubCall(this, cti_op_jtrue);
- stubCall.addArgument(cond);
- stubCall.call();
- emitJumpSlowToHot(branchTest32(Zero, regT0), target); // Inverted.
-}
-
-void JIT::emit_op_jtrue(Instruction* currentInstruction)
-{
- unsigned cond = currentInstruction[1].u.operand;
- unsigned target = currentInstruction[2].u.operand;
-
- emitLoad(cond, regT1, regT0);
-
- Jump isFalse = branch32(Equal, regT1, Imm32(JSValue::FalseTag));
- addJump(branch32(Equal, regT1, Imm32(JSValue::TrueTag)), target);
-
- Jump isNotInteger = branch32(NotEqual, regT1, Imm32(JSValue::Int32Tag));
- Jump isFalse2 = branch32(Equal, regT0, Imm32(0));
- addJump(jump(), target);
-
- if (supportsFloatingPoint()) {
- isNotInteger.link(this);
-
- addSlowCase(branch32(Above, regT1, Imm32(JSValue::LowestTag)));
-
- zeroDouble(fpRegT0);
- emitLoadDouble(cond, fpRegT1);
- addJump(branchDouble(DoubleNotEqual, fpRegT0, fpRegT1), target);
- } else
- addSlowCase(isNotInteger);
-
- isFalse.link(this);
- isFalse2.link(this);
-}
-
-void JIT::emitSlow_op_jtrue(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
-{
- unsigned cond = currentInstruction[1].u.operand;
- unsigned target = currentInstruction[2].u.operand;
-
- linkSlowCase(iter);
- JITStubCall stubCall(this, cti_op_jtrue);
- stubCall.addArgument(cond);
- stubCall.call();
- emitJumpSlowToHot(branchTest32(NonZero, regT0), target);
-}
-
-void JIT::emit_op_jeq_null(Instruction* currentInstruction)
-{
- unsigned src = currentInstruction[1].u.operand;
- unsigned target = currentInstruction[2].u.operand;
-
- emitLoad(src, regT1, regT0);
-
- Jump isImmediate = branch32(NotEqual, regT1, Imm32(JSValue::CellTag));
-
- // First, handle JSCell cases - check MasqueradesAsUndefined bit on the structure.
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSCell, m_structure)), regT2);
- addJump(branchTest32(NonZero, Address(regT2, OBJECT_OFFSETOF(Structure, m_typeInfo.m_flags)), Imm32(MasqueradesAsUndefined)), target);
-
- Jump wasNotImmediate = jump();
-
- // Now handle the immediate cases - undefined & null
- isImmediate.link(this);
-
- set32(Equal, regT1, Imm32(JSValue::NullTag), regT2);
- set32(Equal, regT1, Imm32(JSValue::UndefinedTag), regT1);
- or32(regT2, regT1);
-
- addJump(branchTest32(NonZero, regT1), target);
-
- wasNotImmediate.link(this);
-}
-
-void JIT::emit_op_jneq_null(Instruction* currentInstruction)
-{
- unsigned src = currentInstruction[1].u.operand;
- unsigned target = currentInstruction[2].u.operand;
-
- emitLoad(src, regT1, regT0);
-
- Jump isImmediate = branch32(NotEqual, regT1, Imm32(JSValue::CellTag));
-
- // First, handle JSCell cases - check MasqueradesAsUndefined bit on the structure.
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSCell, m_structure)), regT2);
- addJump(branchTest32(Zero, Address(regT2, OBJECT_OFFSETOF(Structure, m_typeInfo.m_flags)), Imm32(MasqueradesAsUndefined)), target);
-
- Jump wasNotImmediate = jump();
-
- // Now handle the immediate cases - undefined & null
- isImmediate.link(this);
-
- set32(Equal, regT1, Imm32(JSValue::NullTag), regT2);
- set32(Equal, regT1, Imm32(JSValue::UndefinedTag), regT1);
- or32(regT2, regT1);
-
- addJump(branchTest32(Zero, regT1), target);
-
- wasNotImmediate.link(this);
-}
-
-void JIT::emit_op_jneq_ptr(Instruction* currentInstruction)
-{
- unsigned src = currentInstruction[1].u.operand;
- JSCell* ptr = currentInstruction[2].u.jsCell;
- unsigned target = currentInstruction[3].u.operand;
-
- emitLoad(src, regT1, regT0);
- addJump(branch32(NotEqual, regT1, Imm32(JSValue::CellTag)), target);
- addJump(branchPtr(NotEqual, regT0, ImmPtr(ptr)), target);
-}
-
-void JIT::emit_op_jsr(Instruction* currentInstruction)
-{
- int retAddrDst = currentInstruction[1].u.operand;
- int target = currentInstruction[2].u.operand;
- DataLabelPtr storeLocation = storePtrWithPatch(ImmPtr(0), Address(callFrameRegister, sizeof(Register) * retAddrDst));
- addJump(jump(), target);
- m_jsrSites.append(JSRInfo(storeLocation, label()));
-}
-
-void JIT::emit_op_sret(Instruction* currentInstruction)
-{
- jump(Address(callFrameRegister, sizeof(Register) * currentInstruction[1].u.operand));
-}
-
-void JIT::emit_op_eq(Instruction* currentInstruction)
-{
- unsigned dst = currentInstruction[1].u.operand;
- unsigned src1 = currentInstruction[2].u.operand;
- unsigned src2 = currentInstruction[3].u.operand;
-
- emitLoad2(src1, regT1, regT0, src2, regT3, regT2);
- addSlowCase(branch32(NotEqual, regT1, regT3));
- addSlowCase(branch32(Equal, regT1, Imm32(JSValue::CellTag)));
- addSlowCase(branch32(Below, regT1, Imm32(JSValue::LowestTag)));
-
- set8(Equal, regT0, regT2, regT0);
- or32(Imm32(JSValue::FalseTag), regT0);
-
- emitStoreBool(dst, regT0);
-}
-
-void JIT::emitSlow_op_eq(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
-{
- unsigned dst = currentInstruction[1].u.operand;
- unsigned op1 = currentInstruction[2].u.operand;
- unsigned op2 = currentInstruction[3].u.operand;
-
- JumpList storeResult;
- JumpList genericCase;
-
- genericCase.append(getSlowCase(iter)); // tags not equal
-
- linkSlowCase(iter); // tags equal and JSCell
- genericCase.append(branchPtr(NotEqual, Address(regT0), ImmPtr(m_globalData->jsStringVPtr)));
- genericCase.append(branchPtr(NotEqual, Address(regT2), ImmPtr(m_globalData->jsStringVPtr)));
-
- // String case.
- JITStubCall stubCallEqStrings(this, cti_op_eq_strings);
- stubCallEqStrings.addArgument(regT0);
- stubCallEqStrings.addArgument(regT2);
- stubCallEqStrings.call();
- storeResult.append(jump());
-
- // Generic case.
- genericCase.append(getSlowCase(iter)); // doubles
- genericCase.link(this);
- JITStubCall stubCallEq(this, cti_op_eq);
- stubCallEq.addArgument(op1);
- stubCallEq.addArgument(op2);
- stubCallEq.call(regT0);
-
- storeResult.link(this);
- or32(Imm32(JSValue::FalseTag), regT0);
- emitStoreBool(dst, regT0);
-}
-
-void JIT::emit_op_neq(Instruction* currentInstruction)
-{
- unsigned dst = currentInstruction[1].u.operand;
- unsigned src1 = currentInstruction[2].u.operand;
- unsigned src2 = currentInstruction[3].u.operand;
-
- emitLoad2(src1, regT1, regT0, src2, regT3, regT2);
- addSlowCase(branch32(NotEqual, regT1, regT3));
- addSlowCase(branch32(Equal, regT1, Imm32(JSValue::CellTag)));
- addSlowCase(branch32(Below, regT1, Imm32(JSValue::LowestTag)));
-
- set8(NotEqual, regT0, regT2, regT0);
- or32(Imm32(JSValue::FalseTag), regT0);
-
- emitStoreBool(dst, regT0);
-}
-
-void JIT::emitSlow_op_neq(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
-{
- unsigned dst = currentInstruction[1].u.operand;
-
- JumpList storeResult;
- JumpList genericCase;
-
- genericCase.append(getSlowCase(iter)); // tags not equal
-
- linkSlowCase(iter); // tags equal and JSCell
- genericCase.append(branchPtr(NotEqual, Address(regT0), ImmPtr(m_globalData->jsStringVPtr)));
- genericCase.append(branchPtr(NotEqual, Address(regT2), ImmPtr(m_globalData->jsStringVPtr)));
-
- // String case.
- JITStubCall stubCallEqStrings(this, cti_op_eq_strings);
- stubCallEqStrings.addArgument(regT0);
- stubCallEqStrings.addArgument(regT2);
- stubCallEqStrings.call(regT0);
- storeResult.append(jump());
-
- // Generic case.
- genericCase.append(getSlowCase(iter)); // doubles
- genericCase.link(this);
- JITStubCall stubCallEq(this, cti_op_eq);
- stubCallEq.addArgument(regT1, regT0);
- stubCallEq.addArgument(regT3, regT2);
- stubCallEq.call(regT0);
-
- storeResult.link(this);
- xor32(Imm32(0x1), regT0);
- or32(Imm32(JSValue::FalseTag), regT0);
- emitStoreBool(dst, regT0);
-}
-
-void JIT::compileOpStrictEq(Instruction* currentInstruction, CompileOpStrictEqType type)
-{
- unsigned dst = currentInstruction[1].u.operand;
- unsigned src1 = currentInstruction[2].u.operand;
- unsigned src2 = currentInstruction[3].u.operand;
-
- emitLoadTag(src1, regT0);
- emitLoadTag(src2, regT1);
-
- // Jump to a slow case if either operand is double, or if both operands are
- // cells and/or Int32s.
- move(regT0, regT2);
- and32(regT1, regT2);
- addSlowCase(branch32(Below, regT2, Imm32(JSValue::LowestTag)));
- addSlowCase(branch32(AboveOrEqual, regT2, Imm32(JSValue::CellTag)));
-
- if (type == OpStrictEq)
- set8(Equal, regT0, regT1, regT0);
- else
- set8(NotEqual, regT0, regT1, regT0);
-
- or32(Imm32(JSValue::FalseTag), regT0);
-
- emitStoreBool(dst, regT0);
-}
-
-void JIT::emit_op_stricteq(Instruction* currentInstruction)
-{
- compileOpStrictEq(currentInstruction, OpStrictEq);
-}
-
-void JIT::emitSlow_op_stricteq(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
-{
- unsigned dst = currentInstruction[1].u.operand;
- unsigned src1 = currentInstruction[2].u.operand;
- unsigned src2 = currentInstruction[3].u.operand;
-
- linkSlowCase(iter);
- linkSlowCase(iter);
-
- JITStubCall stubCall(this, cti_op_stricteq);
- stubCall.addArgument(src1);
- stubCall.addArgument(src2);
- stubCall.call(dst);
-}
-
-void JIT::emit_op_nstricteq(Instruction* currentInstruction)
-{
- compileOpStrictEq(currentInstruction, OpNStrictEq);
-}
-
-void JIT::emitSlow_op_nstricteq(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
-{
- unsigned dst = currentInstruction[1].u.operand;
- unsigned src1 = currentInstruction[2].u.operand;
- unsigned src2 = currentInstruction[3].u.operand;
-
- linkSlowCase(iter);
- linkSlowCase(iter);
-
- JITStubCall stubCall(this, cti_op_nstricteq);
- stubCall.addArgument(src1);
- stubCall.addArgument(src2);
- stubCall.call(dst);
-}
-
-void JIT::emit_op_eq_null(Instruction* currentInstruction)
-{
- unsigned dst = currentInstruction[1].u.operand;
- unsigned src = currentInstruction[2].u.operand;
-
- emitLoad(src, regT1, regT0);
- Jump isImmediate = branch32(NotEqual, regT1, Imm32(JSValue::CellTag));
-
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSCell, m_structure)), regT1);
- setTest8(NonZero, Address(regT1, OBJECT_OFFSETOF(Structure, m_typeInfo.m_flags)), Imm32(MasqueradesAsUndefined), regT1);
-
- Jump wasNotImmediate = jump();
-
- isImmediate.link(this);
-
- set8(Equal, regT1, Imm32(JSValue::NullTag), regT2);
- set8(Equal, regT1, Imm32(JSValue::UndefinedTag), regT1);
- or32(regT2, regT1);
-
- wasNotImmediate.link(this);
-
- or32(Imm32(JSValue::FalseTag), regT1);
-
- emitStoreBool(dst, regT1);
-}
-
-void JIT::emit_op_neq_null(Instruction* currentInstruction)
-{
- unsigned dst = currentInstruction[1].u.operand;
- unsigned src = currentInstruction[2].u.operand;
-
- emitLoad(src, regT1, regT0);
- Jump isImmediate = branch32(NotEqual, regT1, Imm32(JSValue::CellTag));
-
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSCell, m_structure)), regT1);
- setTest8(Zero, Address(regT1, OBJECT_OFFSETOF(Structure, m_typeInfo.m_flags)), Imm32(MasqueradesAsUndefined), regT1);
-
- Jump wasNotImmediate = jump();
-
- isImmediate.link(this);
-
- set8(NotEqual, regT1, Imm32(JSValue::NullTag), regT2);
- set8(NotEqual, regT1, Imm32(JSValue::UndefinedTag), regT1);
- and32(regT2, regT1);
-
- wasNotImmediate.link(this);
-
- or32(Imm32(JSValue::FalseTag), regT1);
-
- emitStoreBool(dst, regT1);
-}
-
-void JIT::emit_op_resolve_with_base(Instruction* currentInstruction)
-{
- JITStubCall stubCall(this, cti_op_resolve_with_base);
- stubCall.addArgument(ImmPtr(&m_codeBlock->identifier(currentInstruction[3].u.operand)));
- stubCall.addArgument(Imm32(currentInstruction[1].u.operand));
- stubCall.call(currentInstruction[2].u.operand);
-}
-
-void JIT::emit_op_new_func_exp(Instruction* currentInstruction)
-{
- JITStubCall stubCall(this, cti_op_new_func_exp);
- stubCall.addArgument(ImmPtr(m_codeBlock->functionExpr(currentInstruction[2].u.operand)));
- stubCall.call(currentInstruction[1].u.operand);
-}
-
-void JIT::emit_op_new_regexp(Instruction* currentInstruction)
-{
- JITStubCall stubCall(this, cti_op_new_regexp);
- stubCall.addArgument(ImmPtr(m_codeBlock->regexp(currentInstruction[2].u.operand)));
- stubCall.call(currentInstruction[1].u.operand);
-}
-
-void JIT::emit_op_throw(Instruction* currentInstruction)
-{
- unsigned exception = currentInstruction[1].u.operand;
- JITStubCall stubCall(this, cti_op_throw);
- stubCall.addArgument(exception);
- stubCall.call();
-
-#ifndef NDEBUG
- // cti_op_throw always changes it's return address,
- // this point in the code should never be reached.
- breakpoint();
-#endif
-}
-
-void JIT::emit_op_get_pnames(Instruction* currentInstruction)
-{
- int dst = currentInstruction[1].u.operand;
- int base = currentInstruction[2].u.operand;
- int i = currentInstruction[3].u.operand;
- int size = currentInstruction[4].u.operand;
- int breakTarget = currentInstruction[5].u.operand;
-
- JumpList isNotObject;
-
- emitLoad(base, regT1, regT0);
- if (!m_codeBlock->isKnownNotImmediate(base))
- isNotObject.append(branch32(NotEqual, regT1, Imm32(JSValue::CellTag)));
- if (base != m_codeBlock->thisRegister()) {
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSCell, m_structure)), regT2);
- isNotObject.append(branch32(NotEqual, Address(regT2, OBJECT_OFFSETOF(Structure, m_typeInfo.m_type)), Imm32(ObjectType)));
- }
-
- // We could inline the case where you have a valid cache, but
- // this call doesn't seem to be hot.
- Label isObject(this);
- JITStubCall getPnamesStubCall(this, cti_op_get_pnames);
- getPnamesStubCall.addArgument(regT0);
- getPnamesStubCall.call(dst);
- load32(Address(regT0, OBJECT_OFFSETOF(JSPropertyNameIterator, m_jsStringsSize)), regT3);
- store32(Imm32(0), addressFor(i));
- store32(regT3, addressFor(size));
- Jump end = jump();
-
- isNotObject.link(this);
- addJump(branch32(Equal, regT1, Imm32(JSValue::NullTag)), breakTarget);
- addJump(branch32(Equal, regT1, Imm32(JSValue::UndefinedTag)), breakTarget);
- JITStubCall toObjectStubCall(this, cti_to_object);
- toObjectStubCall.addArgument(regT1, regT0);
- toObjectStubCall.call(base);
- jump().linkTo(isObject, this);
-
- end.link(this);
-}
-
-void JIT::emit_op_next_pname(Instruction* currentInstruction)
-{
- int dst = currentInstruction[1].u.operand;
- int base = currentInstruction[2].u.operand;
- int i = currentInstruction[3].u.operand;
- int size = currentInstruction[4].u.operand;
- int it = currentInstruction[5].u.operand;
- int target = currentInstruction[6].u.operand;
-
- JumpList callHasProperty;
-
- Label begin(this);
- load32(addressFor(i), regT0);
- Jump end = branch32(Equal, regT0, addressFor(size));
-
- // Grab key @ i
- loadPtr(addressFor(it), regT1);
- loadPtr(Address(regT1, OBJECT_OFFSETOF(JSPropertyNameIterator, m_jsStrings)), regT2);
- load32(BaseIndex(regT2, regT0, TimesEight), regT2);
- store32(Imm32(JSValue::CellTag), tagFor(dst));
- store32(regT2, payloadFor(dst));
-
- // Increment i
- add32(Imm32(1), regT0);
- store32(regT0, addressFor(i));
-
- // Verify that i is valid:
- loadPtr(addressFor(base), regT0);
-
- // Test base's structure
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSCell, m_structure)), regT2);
- callHasProperty.append(branchPtr(NotEqual, regT2, Address(Address(regT1, OBJECT_OFFSETOF(JSPropertyNameIterator, m_cachedStructure)))));
-
- // Test base's prototype chain
- loadPtr(Address(Address(regT1, OBJECT_OFFSETOF(JSPropertyNameIterator, m_cachedPrototypeChain))), regT3);
- loadPtr(Address(regT3, OBJECT_OFFSETOF(StructureChain, m_vector)), regT3);
- addJump(branchTestPtr(Zero, Address(regT3)), target);
-
- Label checkPrototype(this);
- callHasProperty.append(branch32(Equal, Address(regT2, OBJECT_OFFSETOF(Structure, m_prototype) + OBJECT_OFFSETOF(JSValue, u.asBits.tag)), Imm32(JSValue::NullTag)));
- loadPtr(Address(regT2, OBJECT_OFFSETOF(Structure, m_prototype) + OBJECT_OFFSETOF(JSValue, u.asBits.payload)), regT2);
- loadPtr(Address(regT2, OBJECT_OFFSETOF(JSCell, m_structure)), regT2);
- callHasProperty.append(branchPtr(NotEqual, regT2, Address(regT3)));
- addPtr(Imm32(sizeof(Structure*)), regT3);
- branchTestPtr(NonZero, Address(regT3)).linkTo(checkPrototype, this);
-
- // Continue loop.
- addJump(jump(), target);
-
- // Slow case: Ask the object if i is valid.
- callHasProperty.link(this);
- loadPtr(addressFor(dst), regT1);
- JITStubCall stubCall(this, cti_has_property);
- stubCall.addArgument(regT0);
- stubCall.addArgument(regT1);
- stubCall.call();
-
- // Test for valid key.
- addJump(branchTest32(NonZero, regT0), target);
- jump().linkTo(begin, this);
-
- // End of loop.
- end.link(this);
-}
-
-void JIT::emit_op_push_scope(Instruction* currentInstruction)
-{
- JITStubCall stubCall(this, cti_op_push_scope);
- stubCall.addArgument(currentInstruction[1].u.operand);
- stubCall.call(currentInstruction[1].u.operand);
-}
-
-void JIT::emit_op_pop_scope(Instruction*)
-{
- JITStubCall(this, cti_op_pop_scope).call();
-}
-
-void JIT::emit_op_to_jsnumber(Instruction* currentInstruction)
-{
- int dst = currentInstruction[1].u.operand;
- int src = currentInstruction[2].u.operand;
-
- emitLoad(src, regT1, regT0);
-
- Jump isInt32 = branch32(Equal, regT1, Imm32(JSValue::Int32Tag));
- addSlowCase(branch32(AboveOrEqual, regT1, Imm32(JSValue::EmptyValueTag)));
- isInt32.link(this);
-
- if (src != dst)
- emitStore(dst, regT1, regT0);
- map(m_bytecodeIndex + OPCODE_LENGTH(op_to_jsnumber), dst, regT1, regT0);
-}
-
-void JIT::emitSlow_op_to_jsnumber(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
-{
- int dst = currentInstruction[1].u.operand;
-
- linkSlowCase(iter);
-
- JITStubCall stubCall(this, cti_op_to_jsnumber);
- stubCall.addArgument(regT1, regT0);
- stubCall.call(dst);
-}
-
-void JIT::emit_op_push_new_scope(Instruction* currentInstruction)
-{
- JITStubCall stubCall(this, cti_op_push_new_scope);
- stubCall.addArgument(ImmPtr(&m_codeBlock->identifier(currentInstruction[2].u.operand)));
- stubCall.addArgument(currentInstruction[3].u.operand);
- stubCall.call(currentInstruction[1].u.operand);
-}
-
-void JIT::emit_op_catch(Instruction* currentInstruction)
-{
- unsigned exception = currentInstruction[1].u.operand;
-
- // This opcode only executes after a return from cti_op_throw.
-
- // cti_op_throw may have taken us to a call frame further up the stack; reload
- // the call frame pointer to adjust.
- peek(callFrameRegister, OBJECT_OFFSETOF(struct JITStackFrame, callFrame) / sizeof (void*));
-
- // Now store the exception returned by cti_op_throw.
- emitStore(exception, regT1, regT0);
- map(m_bytecodeIndex + OPCODE_LENGTH(op_catch), exception, regT1, regT0);
-}
-
-void JIT::emit_op_jmp_scopes(Instruction* currentInstruction)
-{
- JITStubCall stubCall(this, cti_op_jmp_scopes);
- stubCall.addArgument(Imm32(currentInstruction[1].u.operand));
- stubCall.call();
- addJump(jump(), currentInstruction[2].u.operand);
-}
-
-void JIT::emit_op_switch_imm(Instruction* currentInstruction)
-{
- unsigned tableIndex = currentInstruction[1].u.operand;
- unsigned defaultOffset = currentInstruction[2].u.operand;
- unsigned scrutinee = currentInstruction[3].u.operand;
-
- // create jump table for switch destinations, track this switch statement.
- SimpleJumpTable* jumpTable = &m_codeBlock->immediateSwitchJumpTable(tableIndex);
- m_switches.append(SwitchRecord(jumpTable, m_bytecodeIndex, defaultOffset, SwitchRecord::Immediate));
- jumpTable->ctiOffsets.grow(jumpTable->branchOffsets.size());
-
- JITStubCall stubCall(this, cti_op_switch_imm);
- stubCall.addArgument(scrutinee);
- stubCall.addArgument(Imm32(tableIndex));
- stubCall.call();
- jump(regT0);
-}
-
-void JIT::emit_op_switch_char(Instruction* currentInstruction)
-{
- unsigned tableIndex = currentInstruction[1].u.operand;
- unsigned defaultOffset = currentInstruction[2].u.operand;
- unsigned scrutinee = currentInstruction[3].u.operand;
-
- // create jump table for switch destinations, track this switch statement.
- SimpleJumpTable* jumpTable = &m_codeBlock->characterSwitchJumpTable(tableIndex);
- m_switches.append(SwitchRecord(jumpTable, m_bytecodeIndex, defaultOffset, SwitchRecord::Character));
- jumpTable->ctiOffsets.grow(jumpTable->branchOffsets.size());
-
- JITStubCall stubCall(this, cti_op_switch_char);
- stubCall.addArgument(scrutinee);
- stubCall.addArgument(Imm32(tableIndex));
- stubCall.call();
- jump(regT0);
-}
-
-void JIT::emit_op_switch_string(Instruction* currentInstruction)
-{
- unsigned tableIndex = currentInstruction[1].u.operand;
- unsigned defaultOffset = currentInstruction[2].u.operand;
- unsigned scrutinee = currentInstruction[3].u.operand;
-
- // create jump table for switch destinations, track this switch statement.
- StringJumpTable* jumpTable = &m_codeBlock->stringSwitchJumpTable(tableIndex);
- m_switches.append(SwitchRecord(jumpTable, m_bytecodeIndex, defaultOffset));
-
- JITStubCall stubCall(this, cti_op_switch_string);
- stubCall.addArgument(scrutinee);
- stubCall.addArgument(Imm32(tableIndex));
- stubCall.call();
- jump(regT0);
-}
-
-void JIT::emit_op_new_error(Instruction* currentInstruction)
-{
- unsigned dst = currentInstruction[1].u.operand;
- unsigned type = currentInstruction[2].u.operand;
- unsigned message = currentInstruction[3].u.operand;
-
- JITStubCall stubCall(this, cti_op_new_error);
- stubCall.addArgument(Imm32(type));
- stubCall.addArgument(m_codeBlock->getConstant(message));
- stubCall.addArgument(Imm32(m_bytecodeIndex));
- stubCall.call(dst);
-}
-
-void JIT::emit_op_debug(Instruction* currentInstruction)
-{
- JITStubCall stubCall(this, cti_op_debug);
- stubCall.addArgument(Imm32(currentInstruction[1].u.operand));
- stubCall.addArgument(Imm32(currentInstruction[2].u.operand));
- stubCall.addArgument(Imm32(currentInstruction[3].u.operand));
- stubCall.call();
-}
-
-
-void JIT::emit_op_enter(Instruction*)
-{
- // Even though JIT code doesn't use them, we initialize our constant
- // registers to zap stale pointers, to avoid unnecessarily prolonging
- // object lifetime and increasing GC pressure.
- for (int i = 0; i < m_codeBlock->m_numVars; ++i)
- emitStore(i, jsUndefined());
-}
-
-void JIT::emit_op_enter_with_activation(Instruction* currentInstruction)
-{
- emit_op_enter(currentInstruction);
-
- JITStubCall(this, cti_op_push_activation).call(currentInstruction[1].u.operand);
-}
-
-void JIT::emit_op_create_arguments(Instruction*)
-{
- Jump argsCreated = branch32(NotEqual, tagFor(RegisterFile::ArgumentsRegister, callFrameRegister), Imm32(JSValue::EmptyValueTag));
-
- // If we get here the arguments pointer is a null cell - i.e. arguments need lazy creation.
- if (m_codeBlock->m_numParameters == 1)
- JITStubCall(this, cti_op_create_arguments_no_params).call();
- else
- JITStubCall(this, cti_op_create_arguments).call();
-
- argsCreated.link(this);
-}
-
-void JIT::emit_op_init_arguments(Instruction*)
-{
- emitStore(RegisterFile::ArgumentsRegister, JSValue(), callFrameRegister);
-}
-
-void JIT::emit_op_convert_this(Instruction* currentInstruction)
-{
- unsigned thisRegister = currentInstruction[1].u.operand;
-
- emitLoad(thisRegister, regT1, regT0);
-
- addSlowCase(branch32(NotEqual, regT1, Imm32(JSValue::CellTag)));
-
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSCell, m_structure)), regT2);
- addSlowCase(branchTest32(NonZero, Address(regT2, OBJECT_OFFSETOF(Structure, m_typeInfo.m_flags)), Imm32(NeedsThisConversion)));
-
- map(m_bytecodeIndex + OPCODE_LENGTH(op_convert_this), thisRegister, regT1, regT0);
-}
-
-void JIT::emitSlow_op_convert_this(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
-{
- unsigned thisRegister = currentInstruction[1].u.operand;
-
- linkSlowCase(iter);
- linkSlowCase(iter);
-
- JITStubCall stubCall(this, cti_op_convert_this);
- stubCall.addArgument(regT1, regT0);
- stubCall.call(thisRegister);
-}
-
-void JIT::emit_op_profile_will_call(Instruction* currentInstruction)
-{
- peek(regT2, OBJECT_OFFSETOF(JITStackFrame, enabledProfilerReference) / sizeof (void*));
- Jump noProfiler = branchTestPtr(Zero, Address(regT2));
-
- JITStubCall stubCall(this, cti_op_profile_will_call);
- stubCall.addArgument(currentInstruction[1].u.operand);
- stubCall.call();
- noProfiler.link(this);
-}
-
-void JIT::emit_op_profile_did_call(Instruction* currentInstruction)
-{
- peek(regT2, OBJECT_OFFSETOF(JITStackFrame, enabledProfilerReference) / sizeof (void*));
- Jump noProfiler = branchTestPtr(Zero, Address(regT2));
+#if ENABLE(JIT)
+#include "JIT.h"
- JITStubCall stubCall(this, cti_op_profile_did_call);
- stubCall.addArgument(currentInstruction[1].u.operand);
- stubCall.call();
- noProfiler.link(this);
-}
+#include "Arguments.h"
+#include "JITInlineMethods.h"
+#include "JITStubCall.h"
+#include "JSArray.h"
+#include "JSCell.h"
+#include "JSFunction.h"
+#include "JSPropertyNameIterator.h"
+#include "LinkBuffer.h"
-#else // USE(JSVALUE32_64)
+namespace JSC {
-#define RECORD_JUMP_TARGET(targetOffset) \
- do { m_labels[m_bytecodeIndex + (targetOffset)].used(); } while (false)
+#if USE(JSVALUE64)
-void JIT::privateCompileCTIMachineTrampolines(RefPtr<ExecutablePool>* executablePool, JSGlobalData* globalData, CodePtr* ctiStringLengthTrampoline, CodePtr* ctiVirtualCallLink, CodePtr* ctiVirtualCall, CodePtr* ctiNativeCallThunk)
+void JIT::privateCompileCTIMachineTrampolines(RefPtr<ExecutablePool>* executablePool, JSGlobalData* globalData, TrampolineStructure *trampolines)
{
#if ENABLE(JIT_OPTIMIZE_PROPERTY_ACCESS)
// (2) The second function provides fast property access for string length
// Check eax is a string
Jump string_failureCases1 = emitJumpIfNotJSCell(regT0);
- Jump string_failureCases2 = branchPtr(NotEqual, Address(regT0), ImmPtr(m_globalData->jsStringVPtr));
+ Jump string_failureCases2 = branchPtr(NotEqual, Address(regT0), TrustedImmPtr(m_globalData->jsStringVPtr));
// Checks out okay! - get the length from the Ustring.
- load32(Address(regT0, OBJECT_OFFSETOF(JSString, m_stringLength)), regT0);
+ load32(Address(regT0, OBJECT_OFFSETOF(JSString, m_length)), regT0);
- Jump string_failureCases3 = branch32(Above, regT0, Imm32(JSImmediate::maxImmediateInt));
+ Jump string_failureCases3 = branch32(LessThan, regT0, TrustedImm32(0));
// regT0 contains a 64 bit value (is positive, is zero extended) so we don't need sign extend here.
emitFastArithIntToImmNoCheck(regT0, regT0);
// VirtualCallLink Trampoline
// regT0 holds callee, regT1 holds argCount. regT2 will hold the FunctionExecutable.
+ JumpList callLinkFailures;
Label virtualCallLinkBegin = align();
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_executable)), regT2);
-
- Jump isNativeFunc2 = branch32(Equal, Address(regT2, OBJECT_OFFSETOF(FunctionExecutable, m_numParameters)), Imm32(0));
-
- Jump hasCodeBlock2 = branch32(GreaterThan, Address(regT2, OBJECT_OFFSETOF(FunctionExecutable, m_numParameters)), Imm32(0));
- preserveReturnAddressAfterCall(regT3);
- restoreArgumentReference();
- Call callJSFunction2 = call();
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_executable)), regT2);
- emitGetJITStubArg(2, regT1); // argCount
- restoreReturnAddressBeforeReturn(regT3);
- hasCodeBlock2.link(this);
-
- // Check argCount matches callee arity.
- Jump arityCheckOkay2 = branch32(Equal, Address(regT2, OBJECT_OFFSETOF(FunctionExecutable, m_numParameters)), regT1);
+ compileOpCallInitializeCallFrame();
preserveReturnAddressAfterCall(regT3);
- emitPutJITStubArg(regT3, 1); // return address
+ emitPutToCallFrameHeader(regT3, RegisterFile::ReturnPC);
restoreArgumentReference();
- Call callArityCheck2 = call();
- move(regT1, callFrameRegister);
- emitGetJITStubArg(2, regT1); // argCount
+ Call callLazyLinkCall = call();
+ callLinkFailures.append(branchTestPtr(Zero, regT0));
restoreReturnAddressBeforeReturn(regT3);
- arityCheckOkay2.link(this);
-
- isNativeFunc2.link(this);
+ emitGetFromCallFrameHeader32(RegisterFile::ArgumentCount, regT1);
+ jump(regT0);
+ // VirtualConstructLink Trampoline
+ // regT0 holds callee, regT1 holds argCount. regT2 will hold the FunctionExecutable.
+ Label virtualConstructLinkBegin = align();
compileOpCallInitializeCallFrame();
preserveReturnAddressAfterCall(regT3);
- emitPutJITStubArg(regT3, 1); // return address
+ emitPutToCallFrameHeader(regT3, RegisterFile::ReturnPC);
restoreArgumentReference();
- Call callLazyLinkCall = call();
+ Call callLazyLinkConstruct = call();
+ callLinkFailures.append(branchTestPtr(Zero, regT0));
restoreReturnAddressBeforeReturn(regT3);
+ emitGetFromCallFrameHeader32(RegisterFile::ArgumentCount, regT1);
jump(regT0);
// VirtualCall Trampoline
// regT0 holds callee, regT1 holds argCount. regT2 will hold the FunctionExecutable.
Label virtualCallBegin = align();
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_executable)), regT2);
+ compileOpCallInitializeCallFrame();
- Jump isNativeFunc3 = branch32(Equal, Address(regT2, OBJECT_OFFSETOF(FunctionExecutable, m_numParameters)), Imm32(0));
+ loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_executable)), regT2);
- Jump hasCodeBlock3 = branch32(GreaterThan, Address(regT2, OBJECT_OFFSETOF(FunctionExecutable, m_numParameters)), Imm32(0));
+ Jump hasCodeBlock3 = branch32(GreaterThanOrEqual, Address(regT2, OBJECT_OFFSETOF(FunctionExecutable, m_numParametersForCall)), TrustedImm32(0));
preserveReturnAddressAfterCall(regT3);
restoreArgumentReference();
- Call callJSFunction1 = call();
- emitGetJITStubArg(2, regT1); // argCount
+ Call callCompileCall = call();
+ callLinkFailures.append(branchTestPtr(Zero, regT0));
+ emitGetFromCallFrameHeader32(RegisterFile::ArgumentCount, regT1);
restoreReturnAddressBeforeReturn(regT3);
loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_executable)), regT2);
hasCodeBlock3.link(this);
-
- // Check argCount matches callee arity.
- Jump arityCheckOkay3 = branch32(Equal, Address(regT2, OBJECT_OFFSETOF(FunctionExecutable, m_numParameters)), regT1);
- preserveReturnAddressAfterCall(regT3);
- emitPutJITStubArg(regT3, 1); // return address
- restoreArgumentReference();
- Call callArityCheck1 = call();
- move(regT1, callFrameRegister);
- emitGetJITStubArg(2, regT1); // argCount
- restoreReturnAddressBeforeReturn(regT3);
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_executable)), regT2);
- arityCheckOkay3.link(this);
-
- isNativeFunc3.link(this);
- compileOpCallInitializeCallFrame();
- loadPtr(Address(regT2, OBJECT_OFFSETOF(FunctionExecutable, m_jitCode)), regT0);
+ loadPtr(Address(regT2, OBJECT_OFFSETOF(FunctionExecutable, m_jitCodeForCallWithArityCheck)), regT0);
jump(regT0);
- Label nativeCallThunk = align();
- preserveReturnAddressAfterCall(regT0);
- emitPutToCallFrameHeader(regT0, RegisterFile::ReturnPC); // Push return address
+ // VirtualConstruct Trampoline
+ // regT0 holds callee, regT1 holds argCount. regT2 will hold the FunctionExecutable.
+ Label virtualConstructBegin = align();
+ compileOpCallInitializeCallFrame();
- // Load caller frame's scope chain into this callframe so that whatever we call can
- // get to its global data.
- emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, regT1);
- emitGetFromCallFrameHeaderPtr(RegisterFile::ScopeChain, regT1, regT1);
- emitPutToCallFrameHeader(regT1, RegisterFile::ScopeChain);
-
+ loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_executable)), regT2);
-#if CPU(X86_64)
- emitGetFromCallFrameHeader32(RegisterFile::ArgumentCount, X86Registers::ecx);
+ Jump hasCodeBlock4 = branch32(GreaterThanOrEqual, Address(regT2, OBJECT_OFFSETOF(FunctionExecutable, m_numParametersForConstruct)), TrustedImm32(0));
+ preserveReturnAddressAfterCall(regT3);
+ restoreArgumentReference();
+ Call callCompileConstruct = call();
+ callLinkFailures.append(branchTestPtr(Zero, regT0));
+ emitGetFromCallFrameHeader32(RegisterFile::ArgumentCount, regT1);
+ restoreReturnAddressBeforeReturn(regT3);
+ loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_executable)), regT2);
+ hasCodeBlock4.link(this);
- // Allocate stack space for our arglist
- subPtr(Imm32(sizeof(ArgList)), stackPointerRegister);
- COMPILE_ASSERT((sizeof(ArgList) & 0xf) == 0, ArgList_should_by_16byte_aligned);
+ loadPtr(Address(regT2, OBJECT_OFFSETOF(FunctionExecutable, m_jitCodeForConstructWithArityCheck)), regT0);
+ jump(regT0);
- // Set up arguments
- subPtr(Imm32(1), X86Registers::ecx); // Don't include 'this' in argcount
+ // If the parser fails we want to be able to be able to keep going,
+ // So we handle this as a parse failure.
+ callLinkFailures.link(this);
+ emitGetFromCallFrameHeaderPtr(RegisterFile::ReturnPC, regT1);
+ emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, callFrameRegister);
+ restoreReturnAddressBeforeReturn(regT1);
+ move(TrustedImmPtr(&globalData->exceptionLocation), regT2);
+ storePtr(regT1, regT2);
+ poke(callFrameRegister, 1 + OBJECT_OFFSETOF(struct JITStackFrame, callFrame) / sizeof(void*));
+ poke(TrustedImmPtr(FunctionPtr(ctiVMThrowTrampoline).value()));
+ ret();
- // Push argcount
- storePtr(X86Registers::ecx, Address(stackPointerRegister, OBJECT_OFFSETOF(ArgList, m_argCount)));
+ // NativeCall Trampoline
+ Label nativeCallThunk = privateCompileCTINativeCall(globalData);
+ Label nativeConstructThunk = privateCompileCTINativeCall(globalData, true);
- // Calculate the start of the callframe header, and store in edx
- addPtr(Imm32(-RegisterFile::CallFrameHeaderSize * (int32_t)sizeof(Register)), callFrameRegister, X86Registers::edx);
-
- // Calculate start of arguments as callframe header - sizeof(Register) * argcount (ecx)
- mul32(Imm32(sizeof(Register)), X86Registers::ecx, X86Registers::ecx);
- subPtr(X86Registers::ecx, X86Registers::edx);
+#if ENABLE(JIT_OPTIMIZE_PROPERTY_ACCESS)
+ Call string_failureCases1Call = makeTailRecursiveCall(string_failureCases1);
+ Call string_failureCases2Call = makeTailRecursiveCall(string_failureCases2);
+ Call string_failureCases3Call = makeTailRecursiveCall(string_failureCases3);
+#endif
- // push pointer to arguments
- storePtr(X86Registers::edx, Address(stackPointerRegister, OBJECT_OFFSETOF(ArgList, m_args)));
-
- // ArgList is passed by reference so is stackPointerRegister
- move(stackPointerRegister, X86Registers::ecx);
-
- // edx currently points to the first argument, edx-sizeof(Register) points to 'this'
- loadPtr(Address(X86Registers::edx, -(int32_t)sizeof(Register)), X86Registers::edx);
-
- emitGetFromCallFrameHeaderPtr(RegisterFile::Callee, X86Registers::esi);
+ // All trampolines constructed! copy the code, link up calls, and set the pointers on the Machine object.
+ LinkBuffer patchBuffer(*m_globalData, this, m_globalData->executableAllocator);
- move(callFrameRegister, X86Registers::edi);
+#if ENABLE(JIT_OPTIMIZE_PROPERTY_ACCESS)
+ patchBuffer.link(string_failureCases1Call, FunctionPtr(cti_op_get_by_id_string_fail));
+ patchBuffer.link(string_failureCases2Call, FunctionPtr(cti_op_get_by_id_string_fail));
+ patchBuffer.link(string_failureCases3Call, FunctionPtr(cti_op_get_by_id_string_fail));
+#endif
+#if ENABLE(JIT_OPTIMIZE_CALL)
+ patchBuffer.link(callLazyLinkCall, FunctionPtr(cti_vm_lazyLinkCall));
+ patchBuffer.link(callLazyLinkConstruct, FunctionPtr(cti_vm_lazyLinkConstruct));
+#endif
+ patchBuffer.link(callCompileCall, FunctionPtr(cti_op_call_jitCompile));
+ patchBuffer.link(callCompileConstruct, FunctionPtr(cti_op_construct_jitCompile));
- call(Address(X86Registers::esi, OBJECT_OFFSETOF(JSFunction, m_data)));
-
- addPtr(Imm32(sizeof(ArgList)), stackPointerRegister);
-#elif CPU(X86)
- emitGetFromCallFrameHeader32(RegisterFile::ArgumentCount, regT0);
+ CodeRef finalCode = patchBuffer.finalizeCode();
+ *executablePool = finalCode.m_executablePool;
- /* We have two structs that we use to describe the stackframe we set up for our
- * call to native code. NativeCallFrameStructure describes the how we set up the stack
- * in advance of the call. NativeFunctionCalleeSignature describes the callframe
- * as the native code expects it. We do this as we are using the fastcall calling
- * convention which results in the callee popping its arguments off the stack, but
- * not the rest of the callframe so we need a nice way to ensure we increment the
- * stack pointer by the right amount after the call.
- */
-#if COMPILER(MSVC) || OS(LINUX)
- struct NativeCallFrameStructure {
- // CallFrame* callFrame; // passed in EDX
- JSObject* callee;
- JSValue thisValue;
- ArgList* argPointer;
- ArgList args;
- JSValue result;
- };
- struct NativeFunctionCalleeSignature {
- JSObject* callee;
- JSValue thisValue;
- ArgList* argPointer;
- };
-#else
- struct NativeCallFrameStructure {
- // CallFrame* callFrame; // passed in ECX
- // JSObject* callee; // passed in EDX
- JSValue thisValue;
- ArgList* argPointer;
- ArgList args;
- };
- struct NativeFunctionCalleeSignature {
- JSValue thisValue;
- ArgList* argPointer;
- };
+ trampolines->ctiVirtualCallLink = patchBuffer.trampolineAt(virtualCallLinkBegin);
+ trampolines->ctiVirtualConstructLink = patchBuffer.trampolineAt(virtualConstructLinkBegin);
+ trampolines->ctiVirtualCall = patchBuffer.trampolineAt(virtualCallBegin);
+ trampolines->ctiVirtualConstruct = patchBuffer.trampolineAt(virtualConstructBegin);
+ trampolines->ctiNativeCall = patchBuffer.trampolineAt(nativeCallThunk);
+ trampolines->ctiNativeConstruct = patchBuffer.trampolineAt(nativeConstructThunk);
+#if ENABLE(JIT_OPTIMIZE_PROPERTY_ACCESS)
+ trampolines->ctiStringLengthTrampoline = patchBuffer.trampolineAt(stringLengthBegin);
#endif
- const int NativeCallFrameSize = (sizeof(NativeCallFrameStructure) + 15) & ~15;
- // Allocate system stack frame
- subPtr(Imm32(NativeCallFrameSize), stackPointerRegister);
+}
- // Set up arguments
- subPtr(Imm32(1), regT0); // Don't include 'this' in argcount
+JIT::Label JIT::privateCompileCTINativeCall(JSGlobalData* globalData, bool isConstruct)
+{
+ int executableOffsetToFunction = isConstruct ? OBJECT_OFFSETOF(NativeExecutable, m_constructor) : OBJECT_OFFSETOF(NativeExecutable, m_function);
- // push argcount
- storePtr(regT0, Address(stackPointerRegister, OBJECT_OFFSETOF(NativeCallFrameStructure, args) + OBJECT_OFFSETOF(ArgList, m_argCount)));
-
- // Calculate the start of the callframe header, and store in regT1
- addPtr(Imm32(-RegisterFile::CallFrameHeaderSize * (int)sizeof(Register)), callFrameRegister, regT1);
+ Label nativeCallThunk = align();
- // Calculate start of arguments as callframe header - sizeof(Register) * argcount (regT0)
- mul32(Imm32(sizeof(Register)), regT0, regT0);
- subPtr(regT0, regT1);
- storePtr(regT1, Address(stackPointerRegister, OBJECT_OFFSETOF(NativeCallFrameStructure, args) + OBJECT_OFFSETOF(ArgList, m_args)));
+ emitPutImmediateToCallFrameHeader(0, RegisterFile::CodeBlock);
- // ArgList is passed by reference so is stackPointerRegister + 4 * sizeof(Register)
- addPtr(Imm32(OBJECT_OFFSETOF(NativeCallFrameStructure, args)), stackPointerRegister, regT0);
- storePtr(regT0, Address(stackPointerRegister, OBJECT_OFFSETOF(NativeCallFrameStructure, argPointer)));
-
- // regT1 currently points to the first argument, regT1 - sizeof(Register) points to 'this'
- loadPtr(Address(regT1, -(int)sizeof(Register)), regT1);
- storePtr(regT1, Address(stackPointerRegister, OBJECT_OFFSETOF(NativeCallFrameStructure, thisValue)));
-
-#if COMPILER(MSVC) || OS(LINUX)
- // ArgList is passed by reference so is stackPointerRegister + 4 * sizeof(Register)
- addPtr(Imm32(OBJECT_OFFSETOF(NativeCallFrameStructure, result)), stackPointerRegister, X86Registers::ecx);
-
- // Plant callee
- emitGetFromCallFrameHeaderPtr(RegisterFile::Callee, X86Registers::eax);
- storePtr(X86Registers::eax, Address(stackPointerRegister, OBJECT_OFFSETOF(NativeCallFrameStructure, callee)));
+#if CPU(X86_64)
+ // Load caller frame's scope chain into this callframe so that whatever we call can
+ // get to its global data.
+ emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, regT0);
+ emitGetFromCallFrameHeaderPtr(RegisterFile::ScopeChain, regT1, regT0);
+ emitPutCellToCallFrameHeader(regT1, RegisterFile::ScopeChain);
- // Plant callframe
- move(callFrameRegister, X86Registers::edx);
+ peek(regT1);
+ emitPutToCallFrameHeader(regT1, RegisterFile::ReturnPC);
- call(Address(X86Registers::eax, OBJECT_OFFSETOF(JSFunction, m_data)));
+ // Calling convention: f(edi, esi, edx, ecx, ...);
+ // Host function signature: f(ExecState*);
+ move(callFrameRegister, X86Registers::edi);
- // JSValue is a non-POD type
- loadPtr(Address(X86Registers::eax), X86Registers::eax);
-#else
- // Plant callee
- emitGetFromCallFrameHeaderPtr(RegisterFile::Callee, X86Registers::edx);
+ subPtr(TrustedImm32(16 - sizeof(void*)), stackPointerRegister); // Align stack after call.
- // Plant callframe
- move(callFrameRegister, X86Registers::ecx);
- call(Address(X86Registers::edx, OBJECT_OFFSETOF(JSFunction, m_data)));
-#endif
+ emitGetFromCallFrameHeaderPtr(RegisterFile::Callee, X86Registers::esi);
+ loadPtr(Address(X86Registers::esi, OBJECT_OFFSETOF(JSFunction, m_executable)), X86Registers::r9);
+ move(regT0, callFrameRegister); // Eagerly restore caller frame register to avoid loading from stack.
+ call(Address(X86Registers::r9, executableOffsetToFunction));
- // We've put a few temporaries on the stack in addition to the actual arguments
- // so pull them off now
- addPtr(Imm32(NativeCallFrameSize - sizeof(NativeFunctionCalleeSignature)), stackPointerRegister);
+ addPtr(TrustedImm32(16 - sizeof(void*)), stackPointerRegister);
#elif CPU(ARM)
- emitGetFromCallFrameHeader32(RegisterFile::ArgumentCount, regT0);
+ // Load caller frame's scope chain into this callframe so that whatever we call can
+ // get to its global data.
+ emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, regT2);
+ emitGetFromCallFrameHeaderPtr(RegisterFile::ScopeChain, regT1, regT2);
+ emitPutCellToCallFrameHeader(regT1, RegisterFile::ScopeChain);
- // Allocate stack space for our arglist
- COMPILE_ASSERT((sizeof(ArgList) & 0x7) == 0, ArgList_should_by_8byte_aligned);
- subPtr(Imm32(sizeof(ArgList)), stackPointerRegister);
+ preserveReturnAddressAfterCall(regT3); // Callee preserved
+ emitPutToCallFrameHeader(regT3, RegisterFile::ReturnPC);
- // Set up arguments
- subPtr(Imm32(1), regT0); // Don't include 'this' in argcount
+ // Calling convention: f(r0 == regT0, r1 == regT1, ...);
+ // Host function signature: f(ExecState*);
+ move(callFrameRegister, ARMRegisters::r0);
- // Push argcount
- storePtr(regT0, Address(stackPointerRegister, OBJECT_OFFSETOF(ArgList, m_argCount)));
+ emitGetFromCallFrameHeaderPtr(RegisterFile::Callee, ARMRegisters::r1);
+ move(regT2, callFrameRegister); // Eagerly restore caller frame register to avoid loading from stack.
+ loadPtr(Address(ARMRegisters::r1, OBJECT_OFFSETOF(JSFunction, m_executable)), regT2);
+ call(Address(regT2, executableOffsetToFunction));
- // Calculate the start of the callframe header, and store in regT1
- move(callFrameRegister, regT1);
- sub32(Imm32(RegisterFile::CallFrameHeaderSize * (int32_t)sizeof(Register)), regT1);
+ restoreReturnAddressBeforeReturn(regT3);
- // Calculate start of arguments as callframe header - sizeof(Register) * argcount (regT1)
- mul32(Imm32(sizeof(Register)), regT0, regT0);
- subPtr(regT0, regT1);
+#elif CPU(MIPS)
+ // Load caller frame's scope chain into this callframe so that whatever we call can
+ // get to its global data.
+ emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, regT0);
+ emitGetFromCallFrameHeaderPtr(RegisterFile::ScopeChain, regT1, regT0);
+ emitPutCellToCallFrameHeader(regT1, RegisterFile::ScopeChain);
- // push pointer to arguments
- storePtr(regT1, Address(stackPointerRegister, OBJECT_OFFSETOF(ArgList, m_args)));
+ preserveReturnAddressAfterCall(regT3); // Callee preserved
+ emitPutToCallFrameHeader(regT3, RegisterFile::ReturnPC);
- // Setup arg3: regT1 currently points to the first argument, regT1-sizeof(Register) points to 'this'
- loadPtr(Address(regT1, -(int32_t)sizeof(Register)), regT2);
+ // Calling convention: f(a0, a1, a2, a3);
+ // Host function signature: f(ExecState*);
- // Setup arg2:
- emitGetFromCallFrameHeaderPtr(RegisterFile::Callee, regT1);
+ // Allocate stack space for 16 bytes (8-byte aligned)
+ // 16 bytes (unused) for 4 arguments
+ subPtr(TrustedImm32(16), stackPointerRegister);
- // Setup arg1:
- move(callFrameRegister, regT0);
+ // Setup arg0
+ move(callFrameRegister, MIPSRegisters::a0);
- // Setup arg4: This is a plain hack
- move(stackPointerRegister, ARMRegisters::r3);
+ // Call
+ emitGetFromCallFrameHeaderPtr(RegisterFile::Callee, MIPSRegisters::a2);
+ loadPtr(Address(MIPSRegisters::a2, OBJECT_OFFSETOF(JSFunction, m_executable)), regT2);
+ move(regT0, callFrameRegister); // Eagerly restore caller frame register to avoid loading from stack.
+ call(Address(regT2, executableOffsetToFunction));
- call(Address(regT1, OBJECT_OFFSETOF(JSFunction, m_data)));
+ // Restore stack space
+ addPtr(TrustedImm32(16), stackPointerRegister);
- addPtr(Imm32(sizeof(ArgList)), stackPointerRegister);
+ restoreReturnAddressBeforeReturn(regT3);
#elif ENABLE(JIT_OPTIMIZE_NATIVE_CALL)
#error "JIT_OPTIMIZE_NATIVE_CALL not yet supported on this platform."
#else
+ UNUSED_PARAM(executableOffsetToFunction);
breakpoint();
#endif
loadPtr(&(globalData->exception), regT2);
Jump exceptionHandler = branchTestPtr(NonZero, regT2);
- // Grab the return address.
- emitGetFromCallFrameHeaderPtr(RegisterFile::ReturnPC, regT1);
-
- // Restore our caller's "r".
- emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, callFrameRegister);
-
// Return.
- restoreReturnAddressBeforeReturn(regT1);
ret();
// Handle an exception
exceptionHandler.link(this);
+
// Grab the return address.
- emitGetFromCallFrameHeaderPtr(RegisterFile::ReturnPC, regT1);
- move(ImmPtr(&globalData->exceptionLocation), regT2);
- storePtr(regT1, regT2);
- move(ImmPtr(FunctionPtr(ctiVMThrowTrampoline).value()), regT2);
- emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, callFrameRegister);
- poke(callFrameRegister, OBJECT_OFFSETOF(struct JITStackFrame, callFrame) / sizeof (void*));
- restoreReturnAddressBeforeReturn(regT2);
- ret();
-
+ preserveReturnAddressAfterCall(regT1);
-#if ENABLE(JIT_OPTIMIZE_PROPERTY_ACCESS)
- Call string_failureCases1Call = makeTailRecursiveCall(string_failureCases1);
- Call string_failureCases2Call = makeTailRecursiveCall(string_failureCases2);
- Call string_failureCases3Call = makeTailRecursiveCall(string_failureCases3);
-#endif
+ move(TrustedImmPtr(&globalData->exceptionLocation), regT2);
+ storePtr(regT1, regT2);
+ poke(callFrameRegister, OBJECT_OFFSETOF(struct JITStackFrame, callFrame) / sizeof(void*));
- // All trampolines constructed! copy the code, link up calls, and set the pointers on the Machine object.
- LinkBuffer patchBuffer(this, m_globalData->executableAllocator.poolForSize(m_assembler.size()));
+ // Set the return address.
+ move(TrustedImmPtr(FunctionPtr(ctiVMThrowTrampoline).value()), regT1);
+ restoreReturnAddressBeforeReturn(regT1);
-#if ENABLE(JIT_OPTIMIZE_PROPERTY_ACCESS)
- patchBuffer.link(string_failureCases1Call, FunctionPtr(cti_op_get_by_id_string_fail));
- patchBuffer.link(string_failureCases2Call, FunctionPtr(cti_op_get_by_id_string_fail));
- patchBuffer.link(string_failureCases3Call, FunctionPtr(cti_op_get_by_id_string_fail));
-#endif
- patchBuffer.link(callArityCheck1, FunctionPtr(cti_op_call_arityCheck));
- patchBuffer.link(callJSFunction1, FunctionPtr(cti_op_call_JSFunction));
-#if ENABLE(JIT_OPTIMIZE_CALL)
- patchBuffer.link(callArityCheck2, FunctionPtr(cti_op_call_arityCheck));
- patchBuffer.link(callJSFunction2, FunctionPtr(cti_op_call_JSFunction));
- patchBuffer.link(callLazyLinkCall, FunctionPtr(cti_vm_lazyLinkCall));
-#endif
+ ret();
- CodeRef finalCode = patchBuffer.finalizeCode();
- *executablePool = finalCode.m_executablePool;
+ return nativeCallThunk;
+}
- *ctiVirtualCallLink = trampolineAt(finalCode, virtualCallLinkBegin);
- *ctiVirtualCall = trampolineAt(finalCode, virtualCallBegin);
- *ctiNativeCallThunk = trampolineAt(finalCode, nativeCallThunk);
-#if ENABLE(JIT_OPTIMIZE_PROPERTY_ACCESS)
- *ctiStringLengthTrampoline = trampolineAt(finalCode, stringLengthBegin);
-#else
- UNUSED_PARAM(ctiStringLengthTrampoline);
-#endif
+JIT::CodePtr JIT::privateCompileCTINativeCall(PassRefPtr<ExecutablePool>, JSGlobalData* globalData, NativeFunction)
+{
+ return globalData->jitStubs->ctiNativeCall();
}
void JIT::emit_op_mov(Instruction* currentInstruction)
void JIT::emit_op_end(Instruction* currentInstruction)
{
- if (m_codeBlock->needsFullScopeChain())
- JITStubCall(this, cti_op_end).call();
ASSERT(returnValueRegister != callFrameRegister);
emitGetVirtualRegister(currentInstruction[1].u.operand, returnValueRegister);
restoreReturnAddressBeforeReturn(Address(callFrameRegister, RegisterFile::ReturnPC * static_cast<int>(sizeof(Register))));
{
unsigned target = currentInstruction[1].u.operand;
addJump(jump(), target);
- RECORD_JUMP_TARGET(target);
}
void JIT::emit_op_loop_if_lesseq(Instruction* currentInstruction)
if (isOperandConstantImmediateInt(op2)) {
emitGetVirtualRegister(op1, regT0);
emitJumpSlowCaseIfNotImmediateInteger(regT0);
-#if USE(JSVALUE64)
int32_t op2imm = getConstantOperandImmediateInt(op2);
-#else
- int32_t op2imm = static_cast<int32_t>(JSImmediate::rawValue(getConstantOperand(op2)));
-#endif
addJump(branch32(LessThanOrEqual, regT0, Imm32(op2imm)), target);
} else {
emitGetVirtualRegisters(op1, regT0, op2, regT1);
JITStubCall(this, cti_op_new_object).call(currentInstruction[1].u.operand);
}
+void JIT::emit_op_check_has_instance(Instruction* currentInstruction)
+{
+ unsigned baseVal = currentInstruction[1].u.operand;
+
+ emitGetVirtualRegister(baseVal, regT0);
+
+ // Check that baseVal is a cell.
+ emitJumpSlowCaseIfNotJSCell(regT0, baseVal);
+
+ // Check that baseVal 'ImplementsHasInstance'.
+ loadPtr(Address(regT0, JSCell::structureOffset()), regT0);
+ addSlowCase(branchTest8(Zero, Address(regT0, Structure::typeInfoFlagsOffset()), TrustedImm32(ImplementsHasInstance)));
+}
+
void JIT::emit_op_instanceof(Instruction* currentInstruction)
{
unsigned dst = currentInstruction[1].u.operand;
emitGetVirtualRegister(baseVal, regT0);
emitGetVirtualRegister(proto, regT1);
- // Check that baseVal & proto are cells.
+ // Check that proto are cells. baseVal must be a cell - this is checked by op_check_has_instance.
emitJumpSlowCaseIfNotJSCell(regT2, value);
- emitJumpSlowCaseIfNotJSCell(regT0, baseVal);
emitJumpSlowCaseIfNotJSCell(regT1, proto);
+ // Check that prototype is an object
+ loadPtr(Address(regT1, JSCell::structureOffset()), regT3);
+ addSlowCase(branch8(NotEqual, Address(regT3, Structure::typeInfoTypeOffset()), TrustedImm32(ObjectType)));
+
+ // Fixme: this check is only needed because the JSC API allows HasInstance to be overridden; we should deprecate this.
// Check that baseVal 'ImplementsDefaultHasInstance'.
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSCell, m_structure)), regT0);
- addSlowCase(branchTest32(Zero, Address(regT0, OBJECT_OFFSETOF(Structure, m_typeInfo.m_flags)), Imm32(ImplementsDefaultHasInstance)));
+ loadPtr(Address(regT0, JSCell::structureOffset()), regT0);
+ addSlowCase(branchTest8(Zero, Address(regT0, Structure::typeInfoFlagsOffset()), TrustedImm32(ImplementsDefaultHasInstance)));
// Optimistically load the result true, and start looping.
// Initially, regT1 still contains proto and regT2 still contains value.
// As we loop regT2 will be updated with its prototype, recursively walking the prototype chain.
- move(ImmPtr(JSValue::encode(jsBoolean(true))), regT0);
+ move(TrustedImmPtr(JSValue::encode(jsBoolean(true))), regT0);
Label loop(this);
// Load the prototype of the object in regT2. If this is equal to regT1 - WIN!
// Otherwise, check if we've hit null - if we have then drop out of the loop, if not go again.
- loadPtr(Address(regT2, OBJECT_OFFSETOF(JSCell, m_structure)), regT2);
- loadPtr(Address(regT2, OBJECT_OFFSETOF(Structure, m_prototype)), regT2);
+ loadPtr(Address(regT2, JSCell::structureOffset()), regT2);
+ loadPtr(Address(regT2, Structure::prototypeOffset()), regT2);
Jump isInstance = branchPtr(Equal, regT2, regT1);
emitJumpIfJSCell(regT2).linkTo(loop, this);
// We get here either by dropping out of the loop, or if value was not an Object. Result is false.
- move(ImmPtr(JSValue::encode(jsBoolean(false))), regT0);
+ move(TrustedImmPtr(JSValue::encode(jsBoolean(false))), regT0);
// isInstance jumps right down to here, to skip setting the result to false (it has already set true).
isInstance.link(this);
emitPutVirtualRegister(dst);
}
-void JIT::emit_op_new_func(Instruction* currentInstruction)
-{
- JITStubCall stubCall(this, cti_op_new_func);
- stubCall.addArgument(ImmPtr(m_codeBlock->functionDecl(currentInstruction[2].u.operand)));
- stubCall.call(currentInstruction[1].u.operand);
-}
-
void JIT::emit_op_call(Instruction* currentInstruction)
{
compileOpCall(op_call, currentInstruction, m_callLinkInfoIndex++);
compileOpCall(op_call_eval, currentInstruction, m_callLinkInfoIndex++);
}
-void JIT::emit_op_load_varargs(Instruction* currentInstruction)
-{
- int argCountDst = currentInstruction[1].u.operand;
- int argsOffset = currentInstruction[2].u.operand;
-
- JITStubCall stubCall(this, cti_op_load_varargs);
- stubCall.addArgument(Imm32(argsOffset));
- stubCall.call();
- // Stores a naked int32 in the register file.
- store32(returnValueRegister, Address(callFrameRegister, argCountDst * sizeof(Register)));
-}
-
void JIT::emit_op_call_varargs(Instruction* currentInstruction)
{
compileOpCallVarargs(currentInstruction);
void JIT::emit_op_get_global_var(Instruction* currentInstruction)
{
- JSVariableObject* globalObject = static_cast<JSVariableObject*>(currentInstruction[2].u.jsCell);
- move(ImmPtr(globalObject), regT0);
- emitGetVariableObjectRegister(regT0, currentInstruction[3].u.operand, regT0);
+ JSVariableObject* globalObject = m_codeBlock->globalObject();
+ loadPtr(&globalObject->m_registers, regT0);
+ loadPtr(Address(regT0, currentInstruction[2].u.operand * sizeof(Register)), regT0);
emitPutVirtualRegister(currentInstruction[1].u.operand);
}
void JIT::emit_op_put_global_var(Instruction* currentInstruction)
{
- emitGetVirtualRegister(currentInstruction[3].u.operand, regT1);
- JSVariableObject* globalObject = static_cast<JSVariableObject*>(currentInstruction[1].u.jsCell);
- move(ImmPtr(globalObject), regT0);
- emitPutVariableObjectRegister(regT1, regT0, currentInstruction[2].u.operand);
+ emitGetVirtualRegister(currentInstruction[2].u.operand, regT1);
+ JSVariableObject* globalObject = m_codeBlock->globalObject();
+ loadPtr(&globalObject->m_registers, regT0);
+ storePtr(regT1, Address(regT0, currentInstruction[1].u.operand * sizeof(Register)));
}
void JIT::emit_op_get_scoped_var(Instruction* currentInstruction)
{
- int skip = currentInstruction[3].u.operand + m_codeBlock->needsFullScopeChain();
+ int skip = currentInstruction[3].u.operand;
emitGetFromCallFrameHeaderPtr(RegisterFile::ScopeChain, regT0);
+ bool checkTopLevel = m_codeBlock->codeType() == FunctionCode && m_codeBlock->needsFullScopeChain();
+ ASSERT(skip || !checkTopLevel);
+ if (checkTopLevel && skip--) {
+ Jump activationNotCreated;
+ if (checkTopLevel)
+ activationNotCreated = branchTestPtr(Zero, addressFor(m_codeBlock->activationRegister()));
+ loadPtr(Address(regT0, OBJECT_OFFSETOF(ScopeChainNode, next)), regT0);
+ activationNotCreated.link(this);
+ }
while (skip--)
loadPtr(Address(regT0, OBJECT_OFFSETOF(ScopeChainNode, next)), regT0);
loadPtr(Address(regT0, OBJECT_OFFSETOF(ScopeChainNode, object)), regT0);
- emitGetVariableObjectRegister(regT0, currentInstruction[2].u.operand, regT0);
+ loadPtr(Address(regT0, OBJECT_OFFSETOF(JSVariableObject, m_registers)), regT0);
+ loadPtr(Address(regT0, currentInstruction[2].u.operand * sizeof(Register)), regT0);
emitPutVirtualRegister(currentInstruction[1].u.operand);
}
void JIT::emit_op_put_scoped_var(Instruction* currentInstruction)
{
- int skip = currentInstruction[2].u.operand + m_codeBlock->needsFullScopeChain();
+ int skip = currentInstruction[2].u.operand;
emitGetFromCallFrameHeaderPtr(RegisterFile::ScopeChain, regT1);
emitGetVirtualRegister(currentInstruction[3].u.operand, regT0);
+ bool checkTopLevel = m_codeBlock->codeType() == FunctionCode && m_codeBlock->needsFullScopeChain();
+ ASSERT(skip || !checkTopLevel);
+ if (checkTopLevel && skip--) {
+ Jump activationNotCreated;
+ if (checkTopLevel)
+ activationNotCreated = branchTestPtr(Zero, addressFor(m_codeBlock->activationRegister()));
+ loadPtr(Address(regT1, OBJECT_OFFSETOF(ScopeChainNode, next)), regT1);
+ activationNotCreated.link(this);
+ }
while (skip--)
loadPtr(Address(regT1, OBJECT_OFFSETOF(ScopeChainNode, next)), regT1);
loadPtr(Address(regT1, OBJECT_OFFSETOF(ScopeChainNode, object)), regT1);
- emitPutVariableObjectRegister(regT0, regT1, currentInstruction[1].u.operand);
+ loadPtr(Address(regT1, OBJECT_OFFSETOF(JSVariableObject, m_registers)), regT1);
+ storePtr(regT0, Address(regT1, currentInstruction[1].u.operand * sizeof(Register)));
}
void JIT::emit_op_tear_off_activation(Instruction* currentInstruction)
{
+ unsigned activation = currentInstruction[1].u.operand;
+ unsigned arguments = currentInstruction[2].u.operand;
+ Jump activationCreated = branchTestPtr(NonZero, addressFor(activation));
+ Jump argumentsNotCreated = branchTestPtr(Zero, addressFor(arguments));
+ activationCreated.link(this);
JITStubCall stubCall(this, cti_op_tear_off_activation);
- stubCall.addArgument(currentInstruction[1].u.operand, regT2);
+ stubCall.addArgument(activation, regT2);
+ stubCall.addArgument(unmodifiedArgumentsRegister(arguments), regT2);
+ stubCall.call();
+ argumentsNotCreated.link(this);
+}
+
+void JIT::emit_op_tear_off_arguments(Instruction* currentInstruction)
+{
+ unsigned dst = currentInstruction[1].u.operand;
+
+ Jump argsNotCreated = branchTestPtr(Zero, Address(callFrameRegister, sizeof(Register) * (unmodifiedArgumentsRegister(dst))));
+ JITStubCall stubCall(this, cti_op_tear_off_arguments);
+ stubCall.addArgument(unmodifiedArgumentsRegister(dst), regT2);
stubCall.call();
+ argsNotCreated.link(this);
}
-void JIT::emit_op_tear_off_arguments(Instruction*)
+void JIT::emit_op_ret(Instruction* currentInstruction)
{
- JITStubCall(this, cti_op_tear_off_arguments).call();
+ ASSERT(callFrameRegister != regT1);
+ ASSERT(regT1 != returnValueRegister);
+ ASSERT(returnValueRegister != callFrameRegister);
+
+ // Return the result in %eax.
+ emitGetVirtualRegister(currentInstruction[1].u.operand, returnValueRegister);
+
+ // Grab the return address.
+ emitGetFromCallFrameHeaderPtr(RegisterFile::ReturnPC, regT1);
+
+ // Restore our caller's "r".
+ emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, callFrameRegister);
+
+ // Return.
+ restoreReturnAddressBeforeReturn(regT1);
+ ret();
}
-void JIT::emit_op_ret(Instruction* currentInstruction)
+void JIT::emit_op_ret_object_or_this(Instruction* currentInstruction)
{
- // We could JIT generate the deref, only calling out to C when the refcount hits zero.
- if (m_codeBlock->needsFullScopeChain())
- JITStubCall(this, cti_op_ret_scopeChain).call();
-
ASSERT(callFrameRegister != regT1);
ASSERT(regT1 != returnValueRegister);
ASSERT(returnValueRegister != callFrameRegister);
// Return the result in %eax.
emitGetVirtualRegister(currentInstruction[1].u.operand, returnValueRegister);
+ Jump notJSCell = emitJumpIfNotJSCell(returnValueRegister);
+ loadPtr(Address(returnValueRegister, JSCell::structureOffset()), regT2);
+ Jump notObject = branch8(NotEqual, Address(regT2, Structure::typeInfoTypeOffset()), TrustedImm32(ObjectType));
// Grab the return address.
emitGetFromCallFrameHeaderPtr(RegisterFile::ReturnPC, regT1);
// Return.
restoreReturnAddressBeforeReturn(regT1);
ret();
-}
-void JIT::emit_op_new_array(Instruction* currentInstruction)
-{
- JITStubCall stubCall(this, cti_op_new_array);
- stubCall.addArgument(Imm32(currentInstruction[2].u.operand));
- stubCall.addArgument(Imm32(currentInstruction[3].u.operand));
- stubCall.call(currentInstruction[1].u.operand);
+ // Return 'this' in %eax.
+ notJSCell.link(this);
+ notObject.link(this);
+ emitGetVirtualRegister(currentInstruction[2].u.operand, returnValueRegister);
+
+ // Grab the return address.
+ emitGetFromCallFrameHeaderPtr(RegisterFile::ReturnPC, regT1);
+
+ // Restore our caller's "r".
+ emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, callFrameRegister);
+
+ // Return.
+ restoreReturnAddressBeforeReturn(regT1);
+ ret();
}
void JIT::emit_op_resolve(Instruction* currentInstruction)
{
JITStubCall stubCall(this, cti_op_resolve);
- stubCall.addArgument(ImmPtr(&m_codeBlock->identifier(currentInstruction[2].u.operand)));
+ stubCall.addArgument(TrustedImmPtr(&m_codeBlock->identifier(currentInstruction[2].u.operand)));
stubCall.call(currentInstruction[1].u.operand);
}
-void JIT::emit_op_construct_verify(Instruction* currentInstruction)
-{
- emitGetVirtualRegister(currentInstruction[1].u.operand, regT0);
-
- emitJumpSlowCaseIfNotJSCell(regT0);
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSCell, m_structure)), regT2);
- addSlowCase(branch32(NotEqual, Address(regT2, OBJECT_OFFSETOF(Structure, m_typeInfo) + OBJECT_OFFSETOF(TypeInfo, m_type)), Imm32(ObjectType)));
-
-}
-
void JIT::emit_op_to_primitive(Instruction* currentInstruction)
{
int dst = currentInstruction[1].u.operand;
emitGetVirtualRegister(src, regT0);
Jump isImm = emitJumpIfNotJSCell(regT0);
- addSlowCase(branchPtr(NotEqual, Address(regT0), ImmPtr(m_globalData->jsStringVPtr)));
+ addSlowCase(branchPtr(NotEqual, Address(regT0), TrustedImmPtr(m_globalData->jsStringVPtr)));
isImm.link(this);
if (dst != src)
void JIT::emit_op_resolve_base(Instruction* currentInstruction)
{
- JITStubCall stubCall(this, cti_op_resolve_base);
- stubCall.addArgument(ImmPtr(&m_codeBlock->identifier(currentInstruction[2].u.operand)));
+ JITStubCall stubCall(this, currentInstruction[3].u.operand ? cti_op_resolve_base_strict_put : cti_op_resolve_base);
+ stubCall.addArgument(TrustedImmPtr(&m_codeBlock->identifier(currentInstruction[2].u.operand)));
+ stubCall.call(currentInstruction[1].u.operand);
+}
+
+void JIT::emit_op_ensure_property_exists(Instruction* currentInstruction)
+{
+ JITStubCall stubCall(this, cti_op_ensure_property_exists);
+ stubCall.addArgument(Imm32(currentInstruction[1].u.operand));
+ stubCall.addArgument(TrustedImmPtr(&m_codeBlock->identifier(currentInstruction[2].u.operand)));
stubCall.call(currentInstruction[1].u.operand);
}
void JIT::emit_op_resolve_skip(Instruction* currentInstruction)
{
JITStubCall stubCall(this, cti_op_resolve_skip);
- stubCall.addArgument(ImmPtr(&m_codeBlock->identifier(currentInstruction[2].u.operand)));
- stubCall.addArgument(Imm32(currentInstruction[3].u.operand + m_codeBlock->needsFullScopeChain()));
+ stubCall.addArgument(TrustedImmPtr(&m_codeBlock->identifier(currentInstruction[2].u.operand)));
+ stubCall.addArgument(Imm32(currentInstruction[3].u.operand));
stubCall.call(currentInstruction[1].u.operand);
}
-void JIT::emit_op_resolve_global(Instruction* currentInstruction)
+void JIT::emit_op_resolve_global(Instruction* currentInstruction, bool)
{
// Fast case
- void* globalObject = currentInstruction[2].u.jsCell;
- Identifier* ident = &m_codeBlock->identifier(currentInstruction[3].u.operand);
-
+ void* globalObject = m_codeBlock->globalObject();
unsigned currentIndex = m_globalResolveInfoIndex++;
- void* structureAddress = &(m_codeBlock->globalResolveInfo(currentIndex).structure);
- void* offsetAddr = &(m_codeBlock->globalResolveInfo(currentIndex).offset);
+ GlobalResolveInfo* resolveInfoAddress = &(m_codeBlock->globalResolveInfo(currentIndex));
// Check Structure of global object
- move(ImmPtr(globalObject), regT0);
- loadPtr(structureAddress, regT1);
- Jump noMatch = branchPtr(NotEqual, regT1, Address(regT0, OBJECT_OFFSETOF(JSCell, m_structure))); // Structures don't match
+ move(TrustedImmPtr(globalObject), regT0);
+ move(TrustedImmPtr(resolveInfoAddress), regT2);
+ loadPtr(Address(regT2, OBJECT_OFFSETOF(GlobalResolveInfo, structure)), regT1);
+ addSlowCase(branchPtr(NotEqual, regT1, Address(regT0, JSCell::structureOffset()))); // Structures don't match
// Load cached property
// Assume that the global object always uses external storage.
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSGlobalObject, m_externalStorage)), regT0);
- load32(offsetAddr, regT1);
+ loadPtr(Address(regT0, OBJECT_OFFSETOF(JSGlobalObject, m_propertyStorage)), regT0);
+ load32(Address(regT2, OBJECT_OFFSETOF(GlobalResolveInfo, offset)), regT1);
loadPtr(BaseIndex(regT0, regT1, ScalePtr), regT0);
emitPutVirtualRegister(currentInstruction[1].u.operand);
- Jump end = jump();
+}
- // Slow case
- noMatch.link(this);
+void JIT::emitSlow_op_resolve_global(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+{
+ unsigned dst = currentInstruction[1].u.operand;
+ Identifier* ident = &m_codeBlock->identifier(currentInstruction[2].u.operand);
+
+ unsigned currentIndex = m_globalResolveInfoIndex++;
+
+ linkSlowCase(iter);
JITStubCall stubCall(this, cti_op_resolve_global);
- stubCall.addArgument(ImmPtr(globalObject));
- stubCall.addArgument(ImmPtr(ident));
+ stubCall.addArgument(TrustedImmPtr(ident));
stubCall.addArgument(Imm32(currentIndex));
- stubCall.call(currentInstruction[1].u.operand);
- end.link(this);
+ stubCall.addArgument(regT0);
+ stubCall.call(dst);
}
void JIT::emit_op_not(Instruction* currentInstruction)
{
emitGetVirtualRegister(currentInstruction[2].u.operand, regT0);
- xorPtr(Imm32(static_cast<int32_t>(JSImmediate::FullTagTypeBool)), regT0);
- addSlowCase(branchTestPtr(NonZero, regT0, Imm32(static_cast<int32_t>(~JSImmediate::ExtendedPayloadBitBoolValue))));
- xorPtr(Imm32(static_cast<int32_t>(JSImmediate::FullTagTypeBool | JSImmediate::ExtendedPayloadBitBoolValue)), regT0);
+
+ // Invert against JSValue(false); if the value was tagged as a boolean, then all bits will be
+ // clear other than the low bit (which will be 0 or 1 for false or true inputs respectively).
+ // Then invert against JSValue(true), which will add the tag back in, and flip the low bit.
+ xorPtr(TrustedImm32(static_cast<int32_t>(ValueFalse)), regT0);
+ addSlowCase(branchTestPtr(NonZero, regT0, TrustedImm32(static_cast<int32_t>(~1))));
+ xorPtr(TrustedImm32(static_cast<int32_t>(ValueTrue)), regT0);
+
emitPutVirtualRegister(currentInstruction[1].u.operand);
}
unsigned target = currentInstruction[2].u.operand;
emitGetVirtualRegister(currentInstruction[1].u.operand, regT0);
- addJump(branchPtr(Equal, regT0, ImmPtr(JSValue::encode(jsNumber(m_globalData, 0)))), target);
+ addJump(branchPtr(Equal, regT0, TrustedImmPtr(JSValue::encode(jsNumber(0)))), target);
Jump isNonZero = emitJumpIfImmediateInteger(regT0);
- addJump(branchPtr(Equal, regT0, ImmPtr(JSValue::encode(jsBoolean(false)))), target);
- addSlowCase(branchPtr(NotEqual, regT0, ImmPtr(JSValue::encode(jsBoolean(true)))));
+ addJump(branchPtr(Equal, regT0, TrustedImmPtr(JSValue::encode(jsBoolean(false)))), target);
+ addSlowCase(branchPtr(NotEqual, regT0, TrustedImmPtr(JSValue::encode(jsBoolean(true)))));
isNonZero.link(this);
- RECORD_JUMP_TARGET(target);
-};
+}
+
void JIT::emit_op_jeq_null(Instruction* currentInstruction)
{
unsigned src = currentInstruction[1].u.operand;
Jump isImmediate = emitJumpIfNotJSCell(regT0);
// First, handle JSCell cases - check MasqueradesAsUndefined bit on the structure.
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSCell, m_structure)), regT2);
- addJump(branchTest32(NonZero, Address(regT2, OBJECT_OFFSETOF(Structure, m_typeInfo.m_flags)), Imm32(MasqueradesAsUndefined)), target);
+ loadPtr(Address(regT0, JSCell::structureOffset()), regT2);
+ addJump(branchTest8(NonZero, Address(regT2, Structure::typeInfoFlagsOffset()), TrustedImm32(MasqueradesAsUndefined)), target);
Jump wasNotImmediate = jump();
// Now handle the immediate cases - undefined & null
isImmediate.link(this);
- andPtr(Imm32(~JSImmediate::ExtendedTagBitUndefined), regT0);
- addJump(branchPtr(Equal, regT0, ImmPtr(JSValue::encode(jsNull()))), target);
+ andPtr(TrustedImm32(~TagBitUndefined), regT0);
+ addJump(branchPtr(Equal, regT0, TrustedImmPtr(JSValue::encode(jsNull()))), target);
wasNotImmediate.link(this);
- RECORD_JUMP_TARGET(target);
};
void JIT::emit_op_jneq_null(Instruction* currentInstruction)
{
Jump isImmediate = emitJumpIfNotJSCell(regT0);
// First, handle JSCell cases - check MasqueradesAsUndefined bit on the structure.
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSCell, m_structure)), regT2);
- addJump(branchTest32(Zero, Address(regT2, OBJECT_OFFSETOF(Structure, m_typeInfo.m_flags)), Imm32(MasqueradesAsUndefined)), target);
+ loadPtr(Address(regT0, JSCell::structureOffset()), regT2);
+ addJump(branchTest8(Zero, Address(regT2, Structure::typeInfoFlagsOffset()), TrustedImm32(MasqueradesAsUndefined)), target);
Jump wasNotImmediate = jump();
// Now handle the immediate cases - undefined & null
isImmediate.link(this);
- andPtr(Imm32(~JSImmediate::ExtendedTagBitUndefined), regT0);
- addJump(branchPtr(NotEqual, regT0, ImmPtr(JSValue::encode(jsNull()))), target);
+ andPtr(TrustedImm32(~TagBitUndefined), regT0);
+ addJump(branchPtr(NotEqual, regT0, TrustedImmPtr(JSValue::encode(jsNull()))), target);
wasNotImmediate.link(this);
- RECORD_JUMP_TARGET(target);
}
void JIT::emit_op_jneq_ptr(Instruction* currentInstruction)
{
unsigned src = currentInstruction[1].u.operand;
- JSCell* ptr = currentInstruction[2].u.jsCell;
+ JSCell* ptr = currentInstruction[2].u.jsCell.get();
unsigned target = currentInstruction[3].u.operand;
emitGetVirtualRegister(src, regT0);
- addJump(branchPtr(NotEqual, regT0, ImmPtr(JSValue::encode(JSValue(ptr)))), target);
-
- RECORD_JUMP_TARGET(target);
+ addJump(branchPtr(NotEqual, regT0, TrustedImmPtr(JSValue::encode(JSValue(ptr)))), target);
}
void JIT::emit_op_jsr(Instruction* currentInstruction)
{
int retAddrDst = currentInstruction[1].u.operand;
int target = currentInstruction[2].u.operand;
- DataLabelPtr storeLocation = storePtrWithPatch(ImmPtr(0), Address(callFrameRegister, sizeof(Register) * retAddrDst));
+ DataLabelPtr storeLocation = storePtrWithPatch(TrustedImmPtr(0), Address(callFrameRegister, sizeof(Register) * retAddrDst));
addJump(jump(), target);
m_jsrSites.append(JSRInfo(storeLocation, label()));
killLastResultRegister();
- RECORD_JUMP_TARGET(target);
}
void JIT::emit_op_sret(Instruction* currentInstruction)
{
emitGetVirtualRegisters(currentInstruction[2].u.operand, regT0, currentInstruction[3].u.operand, regT1);
emitJumpSlowCaseIfNotImmediateIntegers(regT0, regT1, regT2);
- set32(Equal, regT1, regT0, regT0);
+ compare32(Equal, regT1, regT0, regT0);
emitTagAsBoolImmediate(regT0);
emitPutVirtualRegister(currentInstruction[1].u.operand);
}
{
emitGetVirtualRegister(currentInstruction[2].u.operand, regT0);
emitJumpSlowCaseIfNotImmediateInteger(regT0);
-#if USE(JSVALUE64)
not32(regT0);
emitFastArithIntToImmNoCheck(regT0, regT0);
-#else
- xorPtr(Imm32(~JSImmediate::TagTypeNumber), regT0);
-#endif
emitPutVirtualRegister(currentInstruction[1].u.operand);
}
void JIT::emit_op_resolve_with_base(Instruction* currentInstruction)
{
JITStubCall stubCall(this, cti_op_resolve_with_base);
- stubCall.addArgument(ImmPtr(&m_codeBlock->identifier(currentInstruction[3].u.operand)));
+ stubCall.addArgument(TrustedImmPtr(&m_codeBlock->identifier(currentInstruction[3].u.operand)));
stubCall.addArgument(Imm32(currentInstruction[1].u.operand));
stubCall.call(currentInstruction[2].u.operand);
}
void JIT::emit_op_new_func_exp(Instruction* currentInstruction)
{
JITStubCall stubCall(this, cti_op_new_func_exp);
- stubCall.addArgument(ImmPtr(m_codeBlock->functionExpr(currentInstruction[2].u.operand)));
+ stubCall.addArgument(TrustedImmPtr(m_codeBlock->functionExpr(currentInstruction[2].u.operand)));
stubCall.call(currentInstruction[1].u.operand);
}
unsigned target = currentInstruction[2].u.operand;
emitGetVirtualRegister(currentInstruction[1].u.operand, regT0);
- Jump isZero = branchPtr(Equal, regT0, ImmPtr(JSValue::encode(jsNumber(m_globalData, 0))));
+ Jump isZero = branchPtr(Equal, regT0, TrustedImmPtr(JSValue::encode(jsNumber(0))));
addJump(emitJumpIfImmediateInteger(regT0), target);
- addJump(branchPtr(Equal, regT0, ImmPtr(JSValue::encode(jsBoolean(true)))), target);
- addSlowCase(branchPtr(NotEqual, regT0, ImmPtr(JSValue::encode(jsBoolean(false)))));
+ addJump(branchPtr(Equal, regT0, TrustedImmPtr(JSValue::encode(jsBoolean(true)))), target);
+ addSlowCase(branchPtr(NotEqual, regT0, TrustedImmPtr(JSValue::encode(jsBoolean(false)))));
isZero.link(this);
- RECORD_JUMP_TARGET(target);
}
void JIT::emit_op_neq(Instruction* currentInstruction)
{
emitGetVirtualRegisters(currentInstruction[2].u.operand, regT0, currentInstruction[3].u.operand, regT1);
emitJumpSlowCaseIfNotImmediateIntegers(regT0, regT1, regT2);
- set32(NotEqual, regT1, regT0, regT0);
+ compare32(NotEqual, regT1, regT0, regT0);
emitTagAsBoolImmediate(regT0);
emitPutVirtualRegister(currentInstruction[1].u.operand);
emitPutVirtualRegister(currentInstruction[1].u.operand);
}
-void JIT::emit_op_new_regexp(Instruction* currentInstruction)
-{
- JITStubCall stubCall(this, cti_op_new_regexp);
- stubCall.addArgument(ImmPtr(m_codeBlock->regexp(currentInstruction[2].u.operand)));
- stubCall.call(currentInstruction[1].u.operand);
-}
-
void JIT::emit_op_bitor(Instruction* currentInstruction)
{
emitGetVirtualRegisters(currentInstruction[2].u.operand, regT0, currentInstruction[3].u.operand, regT1);
emitGetVirtualRegister(base, regT0);
if (!m_codeBlock->isKnownNotImmediate(base))
isNotObject.append(emitJumpIfNotJSCell(regT0));
- if (base != m_codeBlock->thisRegister()) {
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSCell, m_structure)), regT2);
- isNotObject.append(branch32(NotEqual, Address(regT2, OBJECT_OFFSETOF(Structure, m_typeInfo.m_type)), Imm32(ObjectType)));
+ if (base != m_codeBlock->thisRegister() || m_codeBlock->isStrictMode()) {
+ loadPtr(Address(regT0, JSCell::structureOffset()), regT2);
+ isNotObject.append(branch8(NotEqual, Address(regT2, Structure::typeInfoTypeOffset()), TrustedImm32(ObjectType)));
}
// We could inline the case where you have a valid cache, but
getPnamesStubCall.addArgument(regT0);
getPnamesStubCall.call(dst);
load32(Address(regT0, OBJECT_OFFSETOF(JSPropertyNameIterator, m_jsStringsSize)), regT3);
- store32(Imm32(0), addressFor(i));
- store32(regT3, addressFor(size));
+ storePtr(tagTypeNumberRegister, payloadFor(i));
+ store32(TrustedImm32(Int32Tag), intTagFor(size));
+ store32(regT3, intPayloadFor(size));
Jump end = jump();
isNotObject.link(this);
move(regT0, regT1);
- and32(Imm32(~JSImmediate::ExtendedTagBitUndefined), regT1);
- addJump(branch32(Equal, regT1, Imm32(JSImmediate::FullTagTypeNull)), breakTarget);
+ and32(TrustedImm32(~TagBitUndefined), regT1);
+ addJump(branch32(Equal, regT1, TrustedImm32(ValueNull)), breakTarget);
JITStubCall toObjectStubCall(this, cti_to_object);
toObjectStubCall.addArgument(regT0);
JumpList callHasProperty;
Label begin(this);
- load32(addressFor(i), regT0);
- Jump end = branch32(Equal, regT0, addressFor(size));
+ load32(intPayloadFor(i), regT0);
+ Jump end = branch32(Equal, regT0, intPayloadFor(size));
// Grab key @ i
loadPtr(addressFor(it), regT1);
loadPtr(Address(regT1, OBJECT_OFFSETOF(JSPropertyNameIterator, m_jsStrings)), regT2);
-#if USE(JSVALUE64)
loadPtr(BaseIndex(regT2, regT0, TimesEight), regT2);
-#else
- loadPtr(BaseIndex(regT2, regT0, TimesFour), regT2);
-#endif
emitPutVirtualRegister(dst, regT2);
// Increment i
- add32(Imm32(1), regT0);
- store32(regT0, addressFor(i));
+ add32(TrustedImm32(1), regT0);
+ store32(regT0, intPayloadFor(i));
// Verify that i is valid:
emitGetVirtualRegister(base, regT0);
// Test base's structure
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSCell, m_structure)), regT2);
+ loadPtr(Address(regT0, JSCell::structureOffset()), regT2);
callHasProperty.append(branchPtr(NotEqual, regT2, Address(Address(regT1, OBJECT_OFFSETOF(JSPropertyNameIterator, m_cachedStructure)))));
// Test base's prototype chain
addJump(branchTestPtr(Zero, Address(regT3)), target);
Label checkPrototype(this);
- loadPtr(Address(regT2, OBJECT_OFFSETOF(Structure, m_prototype)), regT2);
+ loadPtr(Address(regT2, Structure::prototypeOffset()), regT2);
callHasProperty.append(emitJumpIfNotJSCell(regT2));
- loadPtr(Address(regT2, OBJECT_OFFSETOF(JSCell, m_structure)), regT2);
+ loadPtr(Address(regT2, JSCell::structureOffset()), regT2);
callHasProperty.append(branchPtr(NotEqual, regT2, Address(regT3)));
- addPtr(Imm32(sizeof(Structure*)), regT3);
+ addPtr(TrustedImm32(sizeof(Structure*)), regT3);
branchTestPtr(NonZero, Address(regT3)).linkTo(checkPrototype, this);
// Continue loop.
addSlowCase(emitJumpIfImmediateNumber(regT2));
if (type == OpStrictEq)
- set32(Equal, regT1, regT0, regT0);
+ compare32(Equal, regT1, regT0, regT0);
else
- set32(NotEqual, regT1, regT0, regT0);
+ compare32(NotEqual, regT1, regT0, regT0);
emitTagAsBoolImmediate(regT0);
emitPutVirtualRegister(dst);
Jump wasImmediate = emitJumpIfImmediateInteger(regT0);
emitJumpSlowCaseIfNotJSCell(regT0, srcVReg);
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSCell, m_structure)), regT2);
- addSlowCase(branch32(NotEqual, Address(regT2, OBJECT_OFFSETOF(Structure, m_typeInfo.m_type)), Imm32(NumberType)));
+ loadPtr(Address(regT0, JSCell::structureOffset()), regT2);
+ addSlowCase(branch8(NotEqual, Address(regT2, Structure::typeInfoTypeOffset()), TrustedImm32(NumberType)));
wasImmediate.link(this);
void JIT::emit_op_push_new_scope(Instruction* currentInstruction)
{
JITStubCall stubCall(this, cti_op_push_new_scope);
- stubCall.addArgument(ImmPtr(&m_codeBlock->identifier(currentInstruction[2].u.operand)));
+ stubCall.addArgument(TrustedImmPtr(&m_codeBlock->identifier(currentInstruction[2].u.operand)));
stubCall.addArgument(currentInstruction[3].u.operand, regT2);
stubCall.call(currentInstruction[1].u.operand);
}
void JIT::emit_op_catch(Instruction* currentInstruction)
{
killLastResultRegister(); // FIXME: Implicitly treat op_catch as a labeled statement, and remove this line of code.
- peek(callFrameRegister, OBJECT_OFFSETOF(struct JITStackFrame, callFrame) / sizeof (void*));
+ move(regT0, callFrameRegister);
+ peek(regT3, OBJECT_OFFSETOF(struct JITStackFrame, globalData) / sizeof(void*));
+ loadPtr(Address(regT3, OBJECT_OFFSETOF(JSGlobalData, exception)), regT0);
+ storePtr(TrustedImmPtr(JSValue::encode(JSValue())), Address(regT3, OBJECT_OFFSETOF(JSGlobalData, exception)));
emitPutVirtualRegister(currentInstruction[1].u.operand);
}
stubCall.addArgument(Imm32(currentInstruction[1].u.operand));
stubCall.call();
addJump(jump(), currentInstruction[2].u.operand);
- RECORD_JUMP_TARGET(currentInstruction[2].u.operand);
}
void JIT::emit_op_switch_imm(Instruction* currentInstruction)
// create jump table for switch destinations, track this switch statement.
SimpleJumpTable* jumpTable = &m_codeBlock->immediateSwitchJumpTable(tableIndex);
- m_switches.append(SwitchRecord(jumpTable, m_bytecodeIndex, defaultOffset, SwitchRecord::Immediate));
+ m_switches.append(SwitchRecord(jumpTable, m_bytecodeOffset, defaultOffset, SwitchRecord::Immediate));
jumpTable->ctiOffsets.grow(jumpTable->branchOffsets.size());
JITStubCall stubCall(this, cti_op_switch_imm);
// create jump table for switch destinations, track this switch statement.
SimpleJumpTable* jumpTable = &m_codeBlock->characterSwitchJumpTable(tableIndex);
- m_switches.append(SwitchRecord(jumpTable, m_bytecodeIndex, defaultOffset, SwitchRecord::Character));
+ m_switches.append(SwitchRecord(jumpTable, m_bytecodeOffset, defaultOffset, SwitchRecord::Character));
jumpTable->ctiOffsets.grow(jumpTable->branchOffsets.size());
JITStubCall stubCall(this, cti_op_switch_char);
// create jump table for switch destinations, track this switch statement.
StringJumpTable* jumpTable = &m_codeBlock->stringSwitchJumpTable(tableIndex);
- m_switches.append(SwitchRecord(jumpTable, m_bytecodeIndex, defaultOffset));
+ m_switches.append(SwitchRecord(jumpTable, m_bytecodeOffset, defaultOffset));
JITStubCall stubCall(this, cti_op_switch_string);
stubCall.addArgument(scrutinee, regT2);
jump(regT0);
}
-void JIT::emit_op_new_error(Instruction* currentInstruction)
+void JIT::emit_op_throw_reference_error(Instruction* currentInstruction)
{
- JITStubCall stubCall(this, cti_op_new_error);
- stubCall.addArgument(Imm32(currentInstruction[2].u.operand));
- stubCall.addArgument(ImmPtr(JSValue::encode(m_codeBlock->getConstant(currentInstruction[3].u.operand))));
- stubCall.addArgument(Imm32(m_bytecodeIndex));
- stubCall.call(currentInstruction[1].u.operand);
+ JITStubCall stubCall(this, cti_op_throw_reference_error);
+ stubCall.addArgument(ImmPtr(JSValue::encode(m_codeBlock->getConstant(currentInstruction[1].u.operand))));
+ stubCall.call();
}
void JIT::emit_op_debug(Instruction* currentInstruction)
{
+#if ENABLE(DEBUG_WITH_BREAKPOINT)
+ UNUSED_PARAM(currentInstruction);
+ breakpoint();
+#else
JITStubCall stubCall(this, cti_op_debug);
stubCall.addArgument(Imm32(currentInstruction[1].u.operand));
stubCall.addArgument(Imm32(currentInstruction[2].u.operand));
stubCall.addArgument(Imm32(currentInstruction[3].u.operand));
stubCall.call();
+#endif
}
void JIT::emit_op_eq_null(Instruction* currentInstruction)
emitGetVirtualRegister(src1, regT0);
Jump isImmediate = emitJumpIfNotJSCell(regT0);
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSCell, m_structure)), regT2);
- setTest32(NonZero, Address(regT2, OBJECT_OFFSETOF(Structure, m_typeInfo.m_flags)), Imm32(MasqueradesAsUndefined), regT0);
+ loadPtr(Address(regT0, JSCell::structureOffset()), regT2);
+ test8(NonZero, Address(regT2, Structure::typeInfoFlagsOffset()), TrustedImm32(MasqueradesAsUndefined), regT0);
Jump wasNotImmediate = jump();
isImmediate.link(this);
- andPtr(Imm32(~JSImmediate::ExtendedTagBitUndefined), regT0);
- setPtr(Equal, regT0, Imm32(JSImmediate::FullTagTypeNull), regT0);
+ andPtr(TrustedImm32(~TagBitUndefined), regT0);
+ comparePtr(Equal, regT0, TrustedImm32(ValueNull), regT0);
wasNotImmediate.link(this);
emitGetVirtualRegister(src1, regT0);
Jump isImmediate = emitJumpIfNotJSCell(regT0);
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSCell, m_structure)), regT2);
- setTest32(Zero, Address(regT2, OBJECT_OFFSETOF(Structure, m_typeInfo.m_flags)), Imm32(MasqueradesAsUndefined), regT0);
+ loadPtr(Address(regT0, JSCell::structureOffset()), regT2);
+ test8(Zero, Address(regT2, Structure::typeInfoFlagsOffset()), TrustedImm32(MasqueradesAsUndefined), regT0);
Jump wasNotImmediate = jump();
isImmediate.link(this);
- andPtr(Imm32(~JSImmediate::ExtendedTagBitUndefined), regT0);
- setPtr(NotEqual, regT0, Imm32(JSImmediate::FullTagTypeNull), regT0);
+ andPtr(TrustedImm32(~TagBitUndefined), regT0);
+ comparePtr(NotEqual, regT0, TrustedImm32(ValueNull), regT0);
wasNotImmediate.link(this);
emitTagAsBoolImmediate(regT0);
emitPutVirtualRegister(dst);
-
}
void JIT::emit_op_enter(Instruction*)
}
-void JIT::emit_op_enter_with_activation(Instruction* currentInstruction)
+void JIT::emit_op_create_activation(Instruction* currentInstruction)
{
- // Even though CTI doesn't use them, we initialize our constant
- // registers to zap stale pointers, to avoid unnecessarily prolonging
- // object lifetime and increasing GC pressure.
- size_t count = m_codeBlock->m_numVars;
- for (size_t j = 0; j < count; ++j)
- emitInitRegister(j);
-
+ unsigned dst = currentInstruction[1].u.operand;
+
+ Jump activationCreated = branchTestPtr(NonZero, Address(callFrameRegister, sizeof(Register) * dst));
JITStubCall(this, cti_op_push_activation).call(currentInstruction[1].u.operand);
+ emitPutVirtualRegister(dst);
+ activationCreated.link(this);
}
-void JIT::emit_op_create_arguments(Instruction*)
+void JIT::emit_op_create_arguments(Instruction* currentInstruction)
{
- Jump argsCreated = branchTestPtr(NonZero, Address(callFrameRegister, sizeof(Register) * RegisterFile::ArgumentsRegister));
+ unsigned dst = currentInstruction[1].u.operand;
+
+ Jump argsCreated = branchTestPtr(NonZero, Address(callFrameRegister, sizeof(Register) * dst));
if (m_codeBlock->m_numParameters == 1)
JITStubCall(this, cti_op_create_arguments_no_params).call();
else
JITStubCall(this, cti_op_create_arguments).call();
+ emitPutVirtualRegister(dst);
+ emitPutVirtualRegister(unmodifiedArgumentsRegister(dst));
argsCreated.link(this);
}
-
-void JIT::emit_op_init_arguments(Instruction*)
+
+void JIT::emit_op_init_lazy_reg(Instruction* currentInstruction)
{
- storePtr(ImmPtr(0), Address(callFrameRegister, sizeof(Register) * RegisterFile::ArgumentsRegister));
+ unsigned dst = currentInstruction[1].u.operand;
+
+ storePtr(TrustedImmPtr(0), Address(callFrameRegister, sizeof(Register) * dst));
}
void JIT::emit_op_convert_this(Instruction* currentInstruction)
emitGetVirtualRegister(currentInstruction[1].u.operand, regT0);
emitJumpSlowCaseIfNotJSCell(regT0);
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSCell, m_structure)), regT1);
- addSlowCase(branchTest32(NonZero, Address(regT1, OBJECT_OFFSETOF(Structure, m_typeInfo.m_flags)), Imm32(NeedsThisConversion)));
+ loadPtr(Address(regT0, JSCell::structureOffset()), regT1);
+ addSlowCase(branchTest8(NonZero, Address(regT1, Structure::typeInfoFlagsOffset()), TrustedImm32(NeedsThisConversion)));
+}
+
+void JIT::emit_op_convert_this_strict(Instruction* currentInstruction)
+{
+ emitGetVirtualRegister(currentInstruction[1].u.operand, regT0);
+ Jump notNull = branchTestPtr(NonZero, regT0);
+ move(TrustedImmPtr(JSValue::encode(jsNull())), regT0);
+ emitPutVirtualRegister(currentInstruction[1].u.operand, regT0);
+ Jump setThis = jump();
+ notNull.link(this);
+ Jump isImmediate = emitJumpIfNotJSCell(regT0);
+ loadPtr(Address(regT0, JSCell::structureOffset()), regT1);
+ Jump notAnObject = branch8(NotEqual, Address(regT1, Structure::typeInfoTypeOffset()), TrustedImm32(ObjectType));
+ addSlowCase(branchTest8(NonZero, Address(regT1, Structure::typeInfoFlagsOffset()), TrustedImm32(NeedsThisConversion)));
+ isImmediate.link(this);
+ notAnObject.link(this);
+ setThis.link(this);
+}
+
+void JIT::emit_op_get_callee(Instruction* currentInstruction)
+{
+ unsigned result = currentInstruction[1].u.operand;
+ emitGetFromCallFrameHeaderPtr(RegisterFile::Callee, regT0);
+ emitPutVirtualRegister(result);
+}
+void JIT::emit_op_create_this(Instruction* currentInstruction)
+{
+ JITStubCall stubCall(this, cti_op_create_this);
+ stubCall.addArgument(currentInstruction[2].u.operand, regT1);
+ stubCall.call(currentInstruction[1].u.operand);
}
void JIT::emit_op_profile_will_call(Instruction* currentInstruction)
{
- peek(regT1, OBJECT_OFFSETOF(JITStackFrame, enabledProfilerReference) / sizeof (void*));
+ peek(regT1, OBJECT_OFFSETOF(JITStackFrame, enabledProfilerReference) / sizeof(void*));
Jump noProfiler = branchTestPtr(Zero, Address(regT1));
JITStubCall stubCall(this, cti_op_profile_will_call);
void JIT::emit_op_profile_did_call(Instruction* currentInstruction)
{
- peek(regT1, OBJECT_OFFSETOF(JITStackFrame, enabledProfilerReference) / sizeof (void*));
+ peek(regT1, OBJECT_OFFSETOF(JITStackFrame, enabledProfilerReference) / sizeof(void*));
Jump noProfiler = branchTestPtr(Zero, Address(regT1));
JITStubCall stubCall(this, cti_op_profile_did_call);
stubCall.call(currentInstruction[1].u.operand);
}
-void JIT::emitSlow_op_construct_verify(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+void JIT::emitSlow_op_convert_this_strict(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
linkSlowCase(iter);
- linkSlowCase(iter);
- emitGetVirtualRegister(currentInstruction[2].u.operand, regT0);
- emitPutVirtualRegister(currentInstruction[1].u.operand);
+ JITStubCall stubCall(this, cti_op_convert_this_strict);
+ stubCall.addArgument(regT0);
+ stubCall.call(currentInstruction[1].u.operand);
}
void JIT::emitSlow_op_to_primitive(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
stubCall.call(currentInstruction[1].u.operand);
}
-void JIT::emitSlow_op_get_by_val(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
-{
- unsigned dst = currentInstruction[1].u.operand;
- unsigned base = currentInstruction[2].u.operand;
- unsigned property = currentInstruction[3].u.operand;
-
- linkSlowCase(iter); // property int32 check
- linkSlowCaseIfNotJSCell(iter, base); // base cell check
- linkSlowCase(iter); // base array check
- linkSlowCase(iter); // vector length check
- linkSlowCase(iter); // empty value
-
- JITStubCall stubCall(this, cti_op_get_by_val);
- stubCall.addArgument(base, regT2);
- stubCall.addArgument(property, regT2);
- stubCall.call(dst);
-}
-
void JIT::emitSlow_op_loop_if_lesseq(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
unsigned op2 = currentInstruction[2].u.operand;
void JIT::emitSlow_op_not(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
linkSlowCase(iter);
- xorPtr(Imm32(static_cast<int32_t>(JSImmediate::FullTagTypeBool)), regT0);
+ xorPtr(TrustedImm32(static_cast<int32_t>(ValueFalse)), regT0);
JITStubCall stubCall(this, cti_op_not);
stubCall.addArgument(regT0);
stubCall.call(currentInstruction[1].u.operand);
stubCall.addArgument(regT0);
stubCall.addArgument(regT1);
stubCall.call();
- xor32(Imm32(0x1), regT0);
+ xor32(TrustedImm32(0x1), regT0);
emitTagAsBoolImmediate(regT0);
emitPutVirtualRegister(currentInstruction[1].u.operand);
}
stubCall.call(currentInstruction[1].u.operand);
}
+void JIT::emitSlow_op_check_has_instance(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+{
+ unsigned baseVal = currentInstruction[1].u.operand;
+
+ linkSlowCaseIfNotJSCell(iter, baseVal);
+ linkSlowCase(iter);
+ JITStubCall stubCall(this, cti_op_check_has_instance);
+ stubCall.addArgument(baseVal, regT2);
+ stubCall.call();
+}
+
void JIT::emitSlow_op_instanceof(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
unsigned dst = currentInstruction[1].u.operand;
unsigned proto = currentInstruction[4].u.operand;
linkSlowCaseIfNotJSCell(iter, value);
- linkSlowCaseIfNotJSCell(iter, baseVal);
linkSlowCaseIfNotJSCell(iter, proto);
linkSlowCase(iter);
+ linkSlowCase(iter);
JITStubCall stubCall(this, cti_op_instanceof);
stubCall.addArgument(value, regT2);
stubCall.addArgument(baseVal, regT2);
stubCall.call(currentInstruction[1].u.operand);
}
-#endif // USE(JSVALUE32_64)
+void JIT::emit_op_get_arguments_length(Instruction* currentInstruction)
+{
+ int dst = currentInstruction[1].u.operand;
+ int argumentsRegister = currentInstruction[2].u.operand;
+ addSlowCase(branchTestPtr(NonZero, addressFor(argumentsRegister)));
+ emitGetFromCallFrameHeader32(RegisterFile::ArgumentCount, regT0);
+ sub32(TrustedImm32(1), regT0);
+ emitFastArithReTagImmediate(regT0, regT0);
+ emitPutVirtualRegister(dst, regT0);
+}
+
+void JIT::emitSlow_op_get_arguments_length(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+{
+ linkSlowCase(iter);
+ unsigned dst = currentInstruction[1].u.operand;
+ unsigned base = currentInstruction[2].u.operand;
+ Identifier* ident = &(m_codeBlock->identifier(currentInstruction[3].u.operand));
+
+ emitGetVirtualRegister(base, regT0);
+ JITStubCall stubCall(this, cti_op_get_by_id_generic);
+ stubCall.addArgument(regT0);
+ stubCall.addArgument(TrustedImmPtr(ident));
+ stubCall.call(dst);
+}
+
+void JIT::emit_op_get_argument_by_val(Instruction* currentInstruction)
+{
+ int dst = currentInstruction[1].u.operand;
+ int argumentsRegister = currentInstruction[2].u.operand;
+ int property = currentInstruction[3].u.operand;
+ addSlowCase(branchTestPtr(NonZero, addressFor(argumentsRegister)));
+ emitGetVirtualRegister(property, regT1);
+ addSlowCase(emitJumpIfNotImmediateInteger(regT1));
+ add32(TrustedImm32(1), regT1);
+ // regT1 now contains the integer index of the argument we want, including this
+ emitGetFromCallFrameHeader32(RegisterFile::ArgumentCount, regT2);
+ addSlowCase(branch32(AboveOrEqual, regT1, regT2));
+
+ Jump skipOutofLineParams;
+ int numArgs = m_codeBlock->m_numParameters;
+ if (numArgs) {
+ Jump notInInPlaceArgs = branch32(AboveOrEqual, regT1, Imm32(numArgs));
+ addPtr(Imm32(static_cast<unsigned>(-(RegisterFile::CallFrameHeaderSize + numArgs) * sizeof(Register))), callFrameRegister, regT0);
+ loadPtr(BaseIndex(regT0, regT1, TimesEight, 0), regT0);
+ skipOutofLineParams = jump();
+ notInInPlaceArgs.link(this);
+ }
+
+ addPtr(Imm32(static_cast<unsigned>(-(RegisterFile::CallFrameHeaderSize + numArgs) * sizeof(Register))), callFrameRegister, regT0);
+ mul32(TrustedImm32(sizeof(Register)), regT2, regT2);
+ subPtr(regT2, regT0);
+ loadPtr(BaseIndex(regT0, regT1, TimesEight, 0), regT0);
+ if (numArgs)
+ skipOutofLineParams.link(this);
+ emitPutVirtualRegister(dst, regT0);
+}
+
+void JIT::emitSlow_op_get_argument_by_val(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+{
+ unsigned dst = currentInstruction[1].u.operand;
+ unsigned arguments = currentInstruction[2].u.operand;
+ unsigned property = currentInstruction[3].u.operand;
+
+ linkSlowCase(iter);
+ Jump skipArgumentsCreation = jump();
+
+ linkSlowCase(iter);
+ linkSlowCase(iter);
+ if (m_codeBlock->m_numParameters == 1)
+ JITStubCall(this, cti_op_create_arguments_no_params).call();
+ else
+ JITStubCall(this, cti_op_create_arguments).call();
+ emitPutVirtualRegister(arguments);
+ emitPutVirtualRegister(unmodifiedArgumentsRegister(arguments));
+
+ skipArgumentsCreation.link(this);
+ JITStubCall stubCall(this, cti_op_get_by_val);
+ stubCall.addArgument(arguments, regT2);
+ stubCall.addArgument(property, regT2);
+ stubCall.call(dst);
+}
+
+#endif // USE(JSVALUE64)
+
+void JIT::emit_op_resolve_global_dynamic(Instruction* currentInstruction)
+{
+ int skip = currentInstruction[5].u.operand;
+
+ emitGetFromCallFrameHeaderPtr(RegisterFile::ScopeChain, regT0);
+
+ bool checkTopLevel = m_codeBlock->codeType() == FunctionCode && m_codeBlock->needsFullScopeChain();
+ ASSERT(skip || !checkTopLevel);
+ if (checkTopLevel && skip--) {
+ Jump activationNotCreated;
+ if (checkTopLevel)
+ activationNotCreated = branchTestPtr(Zero, addressFor(m_codeBlock->activationRegister()));
+ loadPtr(Address(regT0, OBJECT_OFFSETOF(ScopeChainNode, object)), regT1);
+ addSlowCase(checkStructure(regT1, m_globalData->activationStructure.get()));
+ loadPtr(Address(regT0, OBJECT_OFFSETOF(ScopeChainNode, next)), regT0);
+ activationNotCreated.link(this);
+ }
+ while (skip--) {
+ loadPtr(Address(regT0, OBJECT_OFFSETOF(ScopeChainNode, object)), regT1);
+ addSlowCase(checkStructure(regT1, m_globalData->activationStructure.get()));
+ loadPtr(Address(regT0, OBJECT_OFFSETOF(ScopeChainNode, next)), regT0);
+ }
+ emit_op_resolve_global(currentInstruction, true);
+}
+
+void JIT::emitSlow_op_resolve_global_dynamic(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+{
+ unsigned dst = currentInstruction[1].u.operand;
+ Identifier* ident = &m_codeBlock->identifier(currentInstruction[2].u.operand);
+ int skip = currentInstruction[5].u.operand;
+ while (skip--)
+ linkSlowCase(iter);
+ JITStubCall resolveStubCall(this, cti_op_resolve);
+ resolveStubCall.addArgument(TrustedImmPtr(ident));
+ resolveStubCall.call(dst);
+ emitJumpSlowToHot(jump(), OPCODE_LENGTH(op_resolve_global_dynamic));
+
+ unsigned currentIndex = m_globalResolveInfoIndex++;
+
+ linkSlowCase(iter); // We managed to skip all the nodes in the scope chain, but the cache missed.
+ JITStubCall stubCall(this, cti_op_resolve_global);
+ stubCall.addArgument(TrustedImmPtr(ident));
+ stubCall.addArgument(Imm32(currentIndex));
+ stubCall.addArgument(regT0);
+ stubCall.call(dst);
+}
+
+void JIT::emit_op_new_regexp(Instruction* currentInstruction)
+{
+ JITStubCall stubCall(this, cti_op_new_regexp);
+ stubCall.addArgument(TrustedImmPtr(m_codeBlock->regexp(currentInstruction[2].u.operand)));
+ stubCall.call(currentInstruction[1].u.operand);
+}
+
+void JIT::emit_op_load_varargs(Instruction* currentInstruction)
+{
+ int argCountDst = currentInstruction[1].u.operand;
+ int argsOffset = currentInstruction[2].u.operand;
+ int registerOffset = currentInstruction[3].u.operand;
+ ASSERT(argsOffset <= registerOffset);
+
+ int expectedParams = m_codeBlock->m_numParameters - 1;
+ // Don't do inline copying if we aren't guaranteed to have a single stream
+ // of arguments
+ if (expectedParams) {
+ JITStubCall stubCall(this, cti_op_load_varargs);
+ stubCall.addArgument(Imm32(argsOffset));
+ stubCall.call();
+ // Stores a naked int32 in the register file.
+ store32(returnValueRegister, Address(callFrameRegister, argCountDst * sizeof(Register)));
+ return;
+ }
+
+#if USE(JSVALUE32_64)
+ addSlowCase(branch32(NotEqual, tagFor(argsOffset), TrustedImm32(JSValue::EmptyValueTag)));
+#else
+ addSlowCase(branchTestPtr(NonZero, addressFor(argsOffset)));
+#endif
+ // Load arg count into regT0
+ emitGetFromCallFrameHeader32(RegisterFile::ArgumentCount, regT0);
+ store32(TrustedImm32(Int32Tag), intTagFor(argCountDst));
+ store32(regT0, intPayloadFor(argCountDst));
+ Jump endBranch = branch32(Equal, regT0, TrustedImm32(1));
+
+ mul32(TrustedImm32(sizeof(Register)), regT0, regT3);
+ addPtr(TrustedImm32(static_cast<unsigned>(sizeof(Register) - RegisterFile::CallFrameHeaderSize * sizeof(Register))), callFrameRegister, regT1);
+ subPtr(regT3, regT1); // regT1 is now the start of the out of line arguments
+ addPtr(Imm32(argsOffset * sizeof(Register)), callFrameRegister, regT2); // regT2 is the target buffer
+
+ // Bounds check the registerfile
+ addPtr(regT2, regT3);
+ addPtr(Imm32((registerOffset - argsOffset) * sizeof(Register)), regT3);
+ addSlowCase(branchPtr(Below, AbsoluteAddress(m_globalData->interpreter->registerFile().addressOfEnd()), regT3));
+
+ sub32(TrustedImm32(1), regT0);
+ Label loopStart = label();
+ loadPtr(BaseIndex(regT1, regT0, TimesEight, static_cast<unsigned>(0 - 2 * sizeof(Register))), regT3);
+ storePtr(regT3, BaseIndex(regT2, regT0, TimesEight, static_cast<unsigned>(0 - sizeof(Register))));
+#if USE(JSVALUE32_64)
+ loadPtr(BaseIndex(regT1, regT0, TimesEight, static_cast<unsigned>(sizeof(void*) - 2 * sizeof(Register))), regT3);
+ storePtr(regT3, BaseIndex(regT2, regT0, TimesEight, static_cast<unsigned>(sizeof(void*) - sizeof(Register))));
+#endif
+ branchSubPtr(NonZero, TrustedImm32(1), regT0).linkTo(loopStart, this);
+ endBranch.link(this);
+}
+
+void JIT::emitSlow_op_load_varargs(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+{
+ int argCountDst = currentInstruction[1].u.operand;
+ int argsOffset = currentInstruction[2].u.operand;
+ int expectedParams = m_codeBlock->m_numParameters - 1;
+ if (expectedParams)
+ return;
+
+ linkSlowCase(iter);
+ linkSlowCase(iter);
+ JITStubCall stubCall(this, cti_op_load_varargs);
+ stubCall.addArgument(Imm32(argsOffset));
+ stubCall.call();
+
+ store32(TrustedImm32(Int32Tag), intTagFor(argCountDst));
+ store32(returnValueRegister, intPayloadFor(argCountDst));
+}
+
+void JIT::emit_op_new_func(Instruction* currentInstruction)
+{
+ Jump lazyJump;
+ int dst = currentInstruction[1].u.operand;
+ if (currentInstruction[3].u.operand) {
+#if USE(JSVALUE32_64)
+ lazyJump = branch32(NotEqual, tagFor(dst), TrustedImm32(JSValue::EmptyValueTag));
+#else
+ lazyJump = branchTestPtr(NonZero, addressFor(dst));
+#endif
+ }
+ JITStubCall stubCall(this, cti_op_new_func);
+ stubCall.addArgument(TrustedImmPtr(m_codeBlock->functionDecl(currentInstruction[2].u.operand)));
+ stubCall.call(currentInstruction[1].u.operand);
+ if (currentInstruction[3].u.operand)
+ lazyJump.link(this);
+}
+
+void JIT::emit_op_new_array(Instruction* currentInstruction)
+{
+ JITStubCall stubCall(this, cti_op_new_array);
+ stubCall.addArgument(Imm32(currentInstruction[2].u.operand));
+ stubCall.addArgument(Imm32(currentInstruction[3].u.operand));
+ stubCall.call(currentInstruction[1].u.operand);
+}
+
+void JIT::emit_op_new_array_buffer(Instruction* currentInstruction)
+{
+ JITStubCall stubCall(this, cti_op_new_array_buffer);
+ stubCall.addArgument(Imm32(currentInstruction[2].u.operand));
+ stubCall.addArgument(Imm32(currentInstruction[3].u.operand));
+ stubCall.call(currentInstruction[1].u.operand);
+}
} // namespace JSC
projects / apple / javascriptcore.git / blobdiff