/*
- * Copyright (C) 2009 Apple Inc. All rights reserved.
+ * Copyright (C) 2009, 2012 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 "JIT.h"
-#include "JITInlineMethods.h"
+#include "Arguments.h"
+#include "CopiedSpaceInlines.h"
+#include "Heap.h"
+#include "JITInlines.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)
+#if USE(JSVALUE64)
-void JIT::privateCompileCTIMachineTrampolines(RefPtr<ExecutablePool>* executablePool, JSGlobalData* globalData, CodePtr* ctiStringLengthTrampoline, CodePtr* ctiVirtualCallPreLink, CodePtr* ctiVirtualCallLink, CodePtr* ctiVirtualCall, CodePtr* ctiNativeCallThunk)
+JIT::CodeRef JIT::privateCompileCTINativeCall(VM* vm, NativeFunction)
{
-#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.
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSString, m_value) + OBJECT_OFFSETOF(UString, m_rep)), regT2);
- load32(Address(regT2, OBJECT_OFFSETOF(UString::Rep, len)), 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)
- /* VirtualCallPreLink Trampoline */
- Label virtualCallPreLinkBegin = align();
-
- // regT0 holds callee, regT1 holds argCount.
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_body)), regT2);
- loadPtr(Address(regT2, OBJECT_OFFSETOF(FunctionBodyNode, m_code)), regT2);
- Jump hasCodeBlock1 = branchTestPtr(NonZero, regT2);
-
- // Lazily generate a CodeBlock.
- preserveReturnAddressAfterCall(regT3); // return address
- restoreArgumentReference();
- Call callJSFunction1 = call();
- move(regT0, regT2);
- emitGetJITStubArg(1, regT0); // callee
- emitGetJITStubArg(5, regT1); // argCount
- restoreReturnAddressBeforeReturn(regT3); // return address
- hasCodeBlock1.link(this);
-
- // regT2 holds codeBlock.
- Jump isNativeFunc1 = branch32(Equal, Address(regT2, OBJECT_OFFSETOF(CodeBlock, m_codeType)), Imm32(NativeCode));
-
- // Check argCount matches callee arity.
- Jump arityCheckOkay1 = branch32(Equal, Address(regT2, OBJECT_OFFSETOF(CodeBlock, m_numParameters)), regT1);
- preserveReturnAddressAfterCall(regT3);
- emitPutJITStubArg(regT3, 3); // return address
- emitPutJITStubArg(regT2, 7); // codeBlock
- restoreArgumentReference();
- Call callArityCheck1 = call();
- move(regT1, callFrameRegister);
- emitGetJITStubArg(1, regT0); // callee
- emitGetJITStubArg(5, regT1); // argCount
- restoreReturnAddressBeforeReturn(regT3); // return address
-
- arityCheckOkay1.link(this);
- isNativeFunc1.link(this);
-
- compileOpCallInitializeCallFrame();
-
- preserveReturnAddressAfterCall(regT3);
- emitPutJITStubArg(regT3, 3);
- restoreArgumentReference();
- Call callDontLazyLinkCall = call();
- restoreReturnAddressBeforeReturn(regT3);
- jump(regT0);
-
- /* VirtualCallLink Trampoline */
- Label virtualCallLinkBegin = align();
-
- // regT0 holds callee, regT1 holds argCount.
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_body)), regT2);
- loadPtr(Address(regT2, OBJECT_OFFSETOF(FunctionBodyNode, m_code)), regT2);
- Jump hasCodeBlock2 = branchTestPtr(NonZero, regT2);
-
- // Lazily generate a CodeBlock.
- preserveReturnAddressAfterCall(regT3); // return address
- restoreArgumentReference();
- Call callJSFunction2 = call();
- move(regT0, regT2);
- emitGetJITStubArg(1, regT0); // callee
- emitGetJITStubArg(5, regT1); // argCount
- restoreReturnAddressBeforeReturn(regT3); // return address
- hasCodeBlock2.link(this);
-
- // regT2 holds codeBlock.
- Jump isNativeFunc2 = branch32(Equal, Address(regT2, OBJECT_OFFSETOF(CodeBlock, m_codeType)), Imm32(NativeCode));
-
- // Check argCount matches callee arity.
- Jump arityCheckOkay2 = branch32(Equal, Address(regT2, OBJECT_OFFSETOF(CodeBlock, m_numParameters)), regT1);
- preserveReturnAddressAfterCall(regT3);
- emitPutJITStubArg(regT3, 3); // return address
- emitPutJITStubArg(regT2, 7); // codeBlock
- restoreArgumentReference();
- Call callArityCheck2 = call();
- move(regT1, callFrameRegister);
- emitGetJITStubArg(1, regT0); // callee
- emitGetJITStubArg(5, regT1); // argCount
- restoreReturnAddressBeforeReturn(regT3); // return address
-
- arityCheckOkay2.link(this);
- isNativeFunc2.link(this);
-
- compileOpCallInitializeCallFrame();
-
- preserveReturnAddressAfterCall(regT3);
- emitPutJITStubArg(regT3, 3);
- restoreArgumentReference();
- Call callLazyLinkCall = call();
- restoreReturnAddressBeforeReturn(regT3);
- jump(regT0);
-#endif // ENABLE(JIT_OPTIMIZE_CALL)
-
- /* VirtualCall Trampoline */
- Label virtualCallBegin = align();
-
- // regT0 holds callee, regT1 holds argCount.
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_body)), regT2);
- loadPtr(Address(regT2, OBJECT_OFFSETOF(FunctionBodyNode, m_code)), regT2);
- Jump hasCodeBlock3 = branchTestPtr(NonZero, regT2);
-
- // Lazily generate a CodeBlock.
- preserveReturnAddressAfterCall(regT3); // return address
- restoreArgumentReference();
- Call callJSFunction3 = call();
- move(regT0, regT2);
- emitGetJITStubArg(1, regT0); // callee
- emitGetJITStubArg(5, regT1); // argCount
- restoreReturnAddressBeforeReturn(regT3); // return address
- hasCodeBlock3.link(this);
-
- // regT2 holds codeBlock.
- Jump isNativeFunc3 = branch32(Equal, Address(regT2, OBJECT_OFFSETOF(CodeBlock, m_codeType)), Imm32(NativeCode));
-
- // Check argCount matches callee.
- Jump arityCheckOkay3 = branch32(Equal, Address(regT2, OBJECT_OFFSETOF(CodeBlock, m_numParameters)), regT1);
- preserveReturnAddressAfterCall(regT3);
- emitPutJITStubArg(regT3, 3); // return address
- emitPutJITStubArg(regT2, 7); // codeBlock
- restoreArgumentReference();
- Call callArityCheck3 = call();
- move(regT1, callFrameRegister);
- emitGetJITStubArg(1, regT0); // callee
- emitGetJITStubArg(5, regT1); // argCount
- restoreReturnAddressBeforeReturn(regT3); // return address
-
- arityCheckOkay3.link(this);
- isNativeFunc3.link(this);
- compileOpCallInitializeCallFrame();
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_body)), regT0);
- loadPtr(Address(regT0, OBJECT_OFFSETOF(FunctionBodyNode, m_jitCode)), regT0);
- jump(regT0);
-
-#if PLATFORM(X86)
- 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);
-
- 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) || PLATFORM(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) || PLATFORM(LINUX)
- // ArgList is passed by reference so is stackPointerRegister + 4 * sizeof(Register)
- addPtr(Imm32(OBJECT_OFFSETOF(NativeCallFrameStructure, result)), stackPointerRegister, X86::ecx);
-
- // Plant callee
- emitGetFromCallFrameHeaderPtr(RegisterFile::Callee, X86::eax);
- storePtr(X86::eax, Address(stackPointerRegister, OBJECT_OFFSETOF(NativeCallFrameStructure, callee)));
-
- // Plant callframe
- move(callFrameRegister, X86::edx);
-
- call(Address(X86::eax, OBJECT_OFFSETOF(JSFunction, m_data)));
-
- // JSValue is a non-POD type, so eax points to it
- emitLoad(0, regT1, regT0, X86::eax);
-#else
- emitGetFromCallFrameHeaderPtr(RegisterFile::Callee, X86::edx); // callee
- move(callFrameRegister, X86::ecx); // callFrame
- call(Address(X86::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);
-
- // Check for an exception
- // FIXME: Maybe we can optimize this comparison to JSValue().
- move(ImmPtr(&globalData->exception), regT2);
- Jump sawException1 = branch32(NotEqual, tagFor(0, regT2), Imm32(JSValue::CellTag));
- Jump sawException2 = branch32(NonZero, payloadFor(0, regT2), Imm32(0));
-
- // Grab the return address.
- emitGetFromCallFrameHeaderPtr(RegisterFile::ReturnPC, regT3);
-
- // Restore our caller's "r".
- emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, callFrameRegister);
-
- // Return.
- restoreReturnAddressBeforeReturn(regT3);
- ret();
-
- // Handle an exception
- sawException1.link(this);
- sawException2.link(this);
- // Grab the return address.
- emitGetFromCallFrameHeaderPtr(RegisterFile::ReturnPC, regT1);
- move(ImmPtr(&globalData->exceptionLocation), regT2);
- storePtr(regT1, regT2);
- move(ImmPtr(reinterpret_cast<void*>(ctiVMThrowTrampoline)), 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
-#if ENABLE(JIT_OPTIMIZE_CALL)
- patchBuffer.link(callArityCheck1, FunctionPtr(cti_op_call_arityCheck));
- patchBuffer.link(callJSFunction1, FunctionPtr(cti_op_call_JSFunction));
- patchBuffer.link(callArityCheck2, FunctionPtr(cti_op_call_arityCheck));
- patchBuffer.link(callJSFunction2, FunctionPtr(cti_op_call_JSFunction));
- patchBuffer.link(callDontLazyLinkCall, FunctionPtr(cti_vm_dontLazyLinkCall));
- patchBuffer.link(callLazyLinkCall, FunctionPtr(cti_vm_lazyLinkCall));
-#endif
- patchBuffer.link(callArityCheck3, FunctionPtr(cti_op_call_arityCheck));
- patchBuffer.link(callJSFunction3, FunctionPtr(cti_op_call_JSFunction));
-
- 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)
- *ctiVirtualCallPreLink = trampolineAt(finalCode, virtualCallPreLinkBegin);
- *ctiVirtualCallLink = trampolineAt(finalCode, virtualCallLinkBegin);
-#else
- UNUSED_PARAM(ctiVirtualCallPreLink);
- UNUSED_PARAM(ctiVirtualCallLink);
-#endif
+ return vm->getCTIStub(nativeCallGenerator);
}
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);
+ int dst = currentInstruction[1].u.operand;
+ int src = currentInstruction[2].u.operand;
+
+ if (canBeOptimizedOrInlined()) {
+ // Use simpler approach, since the DFG thinks that the last result register
+ // is always set to the destination on every operation.
+ emitGetVirtualRegister(src, regT0);
+ emitPutVirtualRegister(dst);
+ } else {
+ if (m_codeBlock->isConstantRegisterIndex(src)) {
+ if (!getConstantOperand(src).isNumber())
+ store64(TrustedImm64(JSValue::encode(getConstantOperand(src))), Address(callFrameRegister, dst * sizeof(Register)));
+ else
+ store64(Imm64(JSValue::encode(getConstantOperand(src))), Address(callFrameRegister, dst * sizeof(Register)));
+ if (dst == m_lastResultBytecodeRegister)
+ killLastResultRegister();
+ } else if ((src == m_lastResultBytecodeRegister) || (dst == m_lastResultBytecodeRegister)) {
+ // If either the src or dst is the cached register go though
+ // get/put registers to make sure we track this correctly.
+ emitGetVirtualRegister(src, regT0);
+ emitPutVirtualRegister(dst);
+ } else {
+ // Perform the copy via regT1; do not disturb any mapping in regT0.
+ load64(Address(callFrameRegister, src * sizeof(Register)), regT1);
+ store64(regT1, Address(callFrameRegister, dst * sizeof(Register)));
+ }
}
}
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))));
+ RELEASE_ASSERT(returnValueRegister != callFrameRegister);
+ emitGetVirtualRegister(currentInstruction[1].u.operand, returnValueRegister);
+ restoreReturnAddressBeforeReturn(Address(callFrameRegister, JSStack::ReturnPC * static_cast<int>(sizeof(Register))));
ret();
}
void JIT::emit_op_jmp(Instruction* currentInstruction)
{
unsigned target = currentInstruction[1].u.operand;
- addJump(jump(), target + 1);
-}
-
-void JIT::emit_op_loop(Instruction* currentInstruction)
-{
- unsigned target = currentInstruction[1].u.operand;
- emitTimeoutCheck();
- addJump(jump(), target + 1);
-}
-
-void JIT::emit_op_loop_if_less(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(GreaterThan, regT0, Imm32(getConstantOperand(op1).asInt32())), target + 3);
- return;
- }
-
- if (isOperandConstantImmediateInt(op2)) {
- emitLoad(op1, regT1, regT0);
- addSlowCase(branch32(NotEqual, regT1, Imm32(JSValue::Int32Tag)));
- addJump(branch32(LessThan, regT0, Imm32(getConstantOperand(op2).asInt32())), target + 3);
- return;
- }
-
- emitLoad2(op1, regT1, regT0, op2, regT3, regT2);
- addSlowCase(branch32(NotEqual, regT1, Imm32(JSValue::Int32Tag)));
- addSlowCase(branch32(NotEqual, regT3, Imm32(JSValue::Int32Tag)));
- addJump(branch32(LessThan, regT0, regT2), target + 3);
+ addJump(jump(), target);
}
-void JIT::emitSlow_op_loop_if_less(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+void JIT::emit_op_new_object(Instruction* currentInstruction)
{
- unsigned op1 = currentInstruction[1].u.operand;
- unsigned op2 = currentInstruction[2].u.operand;
- unsigned target = currentInstruction[3].u.operand;
+ Structure* structure = currentInstruction[3].u.objectAllocationProfile->structure();
+ size_t allocationSize = JSObject::allocationSize(structure->inlineCapacity());
+ MarkedAllocator* allocator = &m_vm->heap.allocatorForObjectWithoutDestructor(allocationSize);
- if (!isOperandConstantImmediateInt(op1) && !isOperandConstantImmediateInt(op2))
- linkSlowCase(iter); // int32 check
- linkSlowCase(iter); // int32 check
+ RegisterID resultReg = regT0;
+ RegisterID allocatorReg = regT1;
+ RegisterID scratchReg = regT2;
- JITStubCall stubCall(this, cti_op_loop_if_less);
- stubCall.addArgument(op1);
- stubCall.addArgument(op2);
- stubCall.call();
- emitJumpSlowToHot(branchTest32(NonZero, regT0), target + 3);
+ move(TrustedImmPtr(allocator), allocatorReg);
+ emitAllocateJSObject(allocatorReg, TrustedImmPtr(structure), resultReg, scratchReg);
+ emitPutVirtualRegister(currentInstruction[1].u.operand);
}
-void JIT::emit_op_loop_if_lesseq(Instruction* currentInstruction)
+void JIT::emitSlow_op_new_object(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
- 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 + 3);
- return;
- }
-
- if (isOperandConstantImmediateInt(op2)) {
- emitLoad(op1, regT1, regT0);
- addSlowCase(branch32(NotEqual, regT1, Imm32(JSValue::Int32Tag)));
- addJump(branch32(LessThanOrEqual, regT0, Imm32(getConstantOperand(op2).asInt32())), target + 3);
- 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 + 3);
+ linkSlowCase(iter);
+ JITStubCall stubCall(this, cti_op_new_object);
+ stubCall.addArgument(TrustedImmPtr(currentInstruction[3].u.objectAllocationProfile->structure()));
+ stubCall.call(currentInstruction[1].u.operand);
}
-void JIT::emitSlow_op_loop_if_lesseq(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+void JIT::emit_op_check_has_instance(Instruction* currentInstruction)
{
- unsigned op1 = currentInstruction[1].u.operand;
- unsigned op2 = currentInstruction[2].u.operand;
- unsigned target = currentInstruction[3].u.operand;
+ unsigned baseVal = currentInstruction[3].u.operand;
- if (!isOperandConstantImmediateInt(op1) && !isOperandConstantImmediateInt(op2))
- linkSlowCase(iter); // int32 check
- linkSlowCase(iter); // int32 check
+ emitGetVirtualRegister(baseVal, regT0);
- JITStubCall stubCall(this, cti_op_loop_if_lesseq);
- stubCall.addArgument(op1);
- stubCall.addArgument(op2);
- stubCall.call();
- emitJumpSlowToHot(branchTest32(NonZero, regT0), target + 3);
-}
+ // Check that baseVal is a cell.
+ emitJumpSlowCaseIfNotJSCell(regT0, baseVal);
-void JIT::emit_op_new_object(Instruction* currentInstruction)
-{
- JITStubCall(this, cti_op_new_object).call(currentInstruction[1].u.operand);
+ // Check that baseVal 'ImplementsHasInstance'.
+ loadPtr(Address(regT0, JSCell::structureOffset()), regT0);
+ addSlowCase(branchTest8(Zero, Address(regT0, Structure::typeInfoFlagsOffset()), TrustedImm32(ImplementsDefaultHasInstance)));
}
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;
+ unsigned proto = currentInstruction[3].u.operand;
// Load the operands (baseVal, proto, and value respectively) 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(proto, regT1);
- emitLoadPayload(baseVal, regT0);
- emitLoadPayload(value, regT2);
-
- // Check that baseVal & proto are cells.
- emitJumpSlowCaseIfNotJSCell(proto);
- emitJumpSlowCaseIfNotJSCell(baseVal);
-
- // Check that baseVal is an object, that it 'ImplementsHasInstance' but that it does not 'OverridesHasInstance'.
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSCell, m_structure)), regT0);
- addSlowCase(branch32(NotEqual, Address(regT0, OBJECT_OFFSETOF(Structure, m_typeInfo.m_type)), Imm32(ObjectType))); // FIXME: Maybe remove this test.
- addSlowCase(branchTest32(Zero, Address(regT0, OBJECT_OFFSETOF(Structure, m_typeInfo.m_flags)), Imm32(ImplementsHasInstance))); // FIXME: TOT checks ImplementsDefaultHasInstance.
+ emitGetVirtualRegister(value, regT2);
+ emitGetVirtualRegister(proto, regT1);
- // If value is not an Object, return false.
- emitLoadTag(value, regT0);
- Jump valueIsImmediate = branch32(NotEqual, regT0, Imm32(JSValue::CellTag));
- loadPtr(Address(regT2, OBJECT_OFFSETOF(JSCell, m_structure)), regT0);
- Jump valueIsNotObject = branch32(NotEqual, Address(regT0, OBJECT_OFFSETOF(Structure, m_typeInfo.m_type)), Imm32(ObjectType)); // FIXME: Maybe remove this test.
-
- // Check proto is object.
- loadPtr(Address(regT1, OBJECT_OFFSETOF(JSCell, m_structure)), regT0);
- addSlowCase(branch32(NotEqual, Address(regT0, OBJECT_OFFSETOF(Structure, m_typeInfo.m_type)), Imm32(ObjectType)));
+ // Check that proto are cells. baseVal must be a cell - this is checked by op_check_has_instance.
+ emitJumpSlowCaseIfNotJSCell(regT2, value);
+ emitJumpSlowCaseIfNotJSCell(regT1, proto);
+ // Check that prototype is an object
+ loadPtr(Address(regT1, JSCell::structureOffset()), regT3);
+ addSlowCase(emitJumpIfNotObject(regT3));
+
// 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);
+ move(TrustedImm64(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);
- load32(Address(regT2, OBJECT_OFFSETOF(Structure, m_prototype) + OBJECT_OFFSETOF(JSValue, u.asBits.payload)), regT2);
+ loadPtr(Address(regT2, JSCell::structureOffset()), regT2);
+ load64(Address(regT2, Structure::prototypeOffset()), regT2);
Jump isInstance = branchPtr(Equal, regT2, regT1);
- branch32(NotEqual, regT2, Imm32(0), loop);
+ 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.
- valueIsImmediate.link(this);
- valueIsNotObject.link(this);
- move(Imm32(JSValue::FalseTag), regT0);
+ move(TrustedImm64(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);
- emitStoreBool(dst, regT0);
+ emitPutVirtualRegister(dst);
}
-void JIT::emitSlow_op_instanceof(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+void JIT::emit_op_is_undefined(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;
-
- linkSlowCaseIfNotJSCell(iter, baseVal);
- linkSlowCaseIfNotJSCell(iter, proto);
- linkSlowCase(iter);
- linkSlowCase(iter);
- linkSlowCase(iter);
+
+ emitGetVirtualRegister(value, regT0);
+ Jump isCell = emitJumpIfJSCell(regT0);
- JITStubCall stubCall(this, cti_op_instanceof);
- stubCall.addArgument(value);
- stubCall.addArgument(baseVal);
- stubCall.addArgument(proto);
- stubCall.call(dst);
+ compare64(Equal, regT0, TrustedImm32(ValueUndefined), regT0);
+ Jump done = jump();
+
+ isCell.link(this);
+ loadPtr(Address(regT0, JSCell::structureOffset()), regT1);
+ Jump isMasqueradesAsUndefined = branchTest8(NonZero, Address(regT1, Structure::typeInfoFlagsOffset()), TrustedImm32(MasqueradesAsUndefined));
+ move(TrustedImm32(0), regT0);
+ Jump notMasqueradesAsUndefined = jump();
+
+ isMasqueradesAsUndefined.link(this);
+ move(TrustedImmPtr(m_codeBlock->globalObject()), regT0);
+ loadPtr(Address(regT1, Structure::globalObjectOffset()), regT1);
+ comparePtr(Equal, regT0, regT1, regT0);
+
+ notMasqueradesAsUndefined.link(this);
+ done.link(this);
+ emitTagAsBoolImmediate(regT0);
+ emitPutVirtualRegister(dst);
}
-void JIT::emit_op_new_func(Instruction* currentInstruction)
+void JIT::emit_op_is_boolean(Instruction* currentInstruction)
{
- JITStubCall stubCall(this, cti_op_new_func);
- stubCall.addArgument(ImmPtr(m_codeBlock->function(currentInstruction[2].u.operand)));
- stubCall.call(currentInstruction[1].u.operand);
+ unsigned dst = currentInstruction[1].u.operand;
+ unsigned value = currentInstruction[2].u.operand;
+
+ emitGetVirtualRegister(value, regT0);
+ xor64(TrustedImm32(static_cast<int32_t>(ValueFalse)), regT0);
+ test64(Zero, regT0, TrustedImm32(static_cast<int32_t>(~1)), regT0);
+ emitTagAsBoolImmediate(regT0);
+ emitPutVirtualRegister(dst);
}
-void JIT::emit_op_get_global_var(Instruction* currentInstruction)
+void JIT::emit_op_is_number(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);
+ unsigned dst = currentInstruction[1].u.operand;
+ unsigned value = currentInstruction[2].u.operand;
+
+ emitGetVirtualRegister(value, regT0);
+ test64(NonZero, regT0, tagTypeNumberRegister, regT0);
+ emitTagAsBoolImmediate(regT0);
+ emitPutVirtualRegister(dst);
}
-void JIT::emit_op_put_global_var(Instruction* currentInstruction)
+void JIT::emit_op_is_string(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);
+ unsigned dst = currentInstruction[1].u.operand;
+ unsigned value = currentInstruction[2].u.operand;
+
+ emitGetVirtualRegister(value, regT0);
+ Jump isNotCell = emitJumpIfNotJSCell(regT0);
+
+ loadPtr(Address(regT0, JSCell::structureOffset()), regT1);
+ compare8(Equal, Address(regT1, Structure::typeInfoTypeOffset()), TrustedImm32(StringType), regT0);
+ emitTagAsBoolImmediate(regT0);
+ Jump done = jump();
+
+ isNotCell.link(this);
+ move(TrustedImm32(ValueFalse), regT0);
+
+ done.link(this);
+ emitPutVirtualRegister(dst);
}
-void JIT::emit_op_get_scoped_var(Instruction* currentInstruction)
+void JIT::emit_op_call(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);
+ compileOpCall(op_call, currentInstruction, m_callLinkInfoIndex++);
}
-void JIT::emit_op_put_scoped_var(Instruction* currentInstruction)
+void JIT::emit_op_call_eval(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);
+ compileOpCall(op_call_eval, currentInstruction, m_callLinkInfoIndex);
+}
- 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);
+void JIT::emit_op_call_varargs(Instruction* currentInstruction)
+{
+ compileOpCall(op_call_varargs, currentInstruction, m_callLinkInfoIndex++);
+}
- emitStore(index, regT1, regT0, regT2);
- map(m_bytecodeIndex + OPCODE_LENGTH(op_put_scoped_var), value, regT1, regT0);
+void JIT::emit_op_construct(Instruction* currentInstruction)
+{
+ compileOpCall(op_construct, currentInstruction, m_callLinkInfoIndex++);
}
void JIT::emit_op_tear_off_activation(Instruction* currentInstruction)
{
+ int activation = currentInstruction[1].u.operand;
+ Jump activationNotCreated = branchTest64(Zero, addressFor(activation));
JITStubCall stubCall(this, cti_op_tear_off_activation);
- stubCall.addArgument(currentInstruction[1].u.operand);
+ stubCall.addArgument(activation, regT2);
stubCall.call();
+ activationNotCreated.link(this);
}
-void JIT::emit_op_tear_off_arguments(Instruction*)
+void JIT::emit_op_tear_off_arguments(Instruction* currentInstruction)
{
- JITStubCall(this, cti_op_tear_off_arguments).call();
+ int arguments = currentInstruction[1].u.operand;
+ int activation = currentInstruction[2].u.operand;
+
+ Jump argsNotCreated = branchTest64(Zero, Address(callFrameRegister, sizeof(Register) * (unmodifiedArgumentsRegister(arguments))));
+ JITStubCall stubCall(this, cti_op_tear_off_arguments);
+ stubCall.addArgument(unmodifiedArgumentsRegister(arguments), regT2);
+ stubCall.addArgument(activation, regT2);
+ stubCall.call();
+ argsNotCreated.link(this);
}
-void JIT::emit_op_new_array(Instruction* currentInstruction)
+void JIT::emit_op_ret(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);
+ 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(JSStack::ReturnPC, regT1);
+
+ // Restore our caller's "r".
+ emitGetFromCallFrameHeaderPtr(JSStack::CallerFrame, callFrameRegister);
+
+ // Return.
+ restoreReturnAddressBeforeReturn(regT1);
+ ret();
}
-void JIT::emit_op_resolve(Instruction* currentInstruction)
+void JIT::emit_op_ret_object_or_this(Instruction* currentInstruction)
{
- JITStubCall stubCall(this, cti_op_resolve);
- stubCall.addArgument(ImmPtr(&m_codeBlock->identifier(currentInstruction[2].u.operand)));
- stubCall.call(currentInstruction[1].u.operand);
+ 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 = emitJumpIfNotObject(regT2);
+
+ // Grab the return address.
+ emitGetFromCallFrameHeaderPtr(JSStack::ReturnPC, regT1);
+
+ // Restore our caller's "r".
+ emitGetFromCallFrameHeaderPtr(JSStack::CallerFrame, callFrameRegister);
+
+ // Return.
+ restoreReturnAddressBeforeReturn(regT1);
+ ret();
+
+ // Return 'this' in %eax.
+ notJSCell.link(this);
+ notObject.link(this);
+ emitGetVirtualRegister(currentInstruction[2].u.operand, returnValueRegister);
+
+ // Grab the return address.
+ emitGetFromCallFrameHeaderPtr(JSStack::ReturnPC, regT1);
+
+ // Restore our caller's "r".
+ emitGetFromCallFrameHeaderPtr(JSStack::CallerFrame, callFrameRegister);
+
+ // Return.
+ restoreReturnAddressBeforeReturn(regT1);
+ ret();
}
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)));
+ emitGetVirtualRegister(src, regT0);
+
+ Jump isImm = emitJumpIfNotJSCell(regT0);
+ addSlowCase(branchPtr(NotEqual, Address(regT0, JSCell::structureOffset()), TrustedImmPtr(m_vm->stringStructure.get())));
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);
+ emitPutVirtualRegister(dst);
- 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.addArgument(TrustedImm32(currentInstruction[2].u.operand));
+ stubCall.addArgument(TrustedImm32(currentInstruction[3].u.operand));
stubCall.call(currentInstruction[1].u.operand);
}
-void JIT::emit_op_loop_if_true(Instruction* currentInstruction)
+void JIT::emit_op_not(Instruction* currentInstruction)
{
- unsigned cond = currentInstruction[1].u.operand;
- unsigned target = currentInstruction[2].u.operand;
-
- emitTimeoutCheck();
-
- emitLoad(cond, regT1, regT0);
+ emitGetVirtualRegister(currentInstruction[2].u.operand, regT0);
- Jump isNotInteger = branch32(NotEqual, regT1, Imm32(JSValue::Int32Tag));
- addJump(branch32(NotEqual, regT0, Imm32(0)), target + 2);
- Jump isNotZero = jump();
+ // 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.
+ xor64(TrustedImm32(static_cast<int32_t>(ValueFalse)), regT0);
+ addSlowCase(branchTestPtr(NonZero, regT0, TrustedImm32(static_cast<int32_t>(~1))));
+ xor64(TrustedImm32(static_cast<int32_t>(ValueTrue)), regT0);
- isNotInteger.link(this);
-
- addJump(branch32(Equal, regT1, Imm32(JSValue::TrueTag)), target + 2);
- addSlowCase(branch32(NotEqual, regT1, Imm32(JSValue::FalseTag)));
-
- isNotZero.link(this);
-}
-
-void JIT::emitSlow_op_loop_if_true(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 + 2);
-}
-
-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 + 2);
-
- Jump isNotInteger = branch32(NotEqual, regT1, Imm32(JSValue::Int32Tag));
- Jump isTrue2 = branch32(NotEqual, regT0, Imm32(0));
- addJump(jump(), target + 2);
-
- if (supportsFloatingPoint()) {
- isNotInteger.link(this);
-
- addSlowCase(branch32(Above, regT1, Imm32(JSValue::LowestTag)));
-
- zeroDouble(fpRegT0);
- emitLoadDouble(cond, fpRegT1);
- addJump(branchDouble(DoubleEqual, fpRegT0, fpRegT1), target + 2);
- } 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 + 2); // 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 + 2);
-
- Jump isNotInteger = branch32(NotEqual, regT1, Imm32(JSValue::Int32Tag));
- Jump isFalse2 = branch32(Equal, regT0, Imm32(0));
- addJump(jump(), target + 2);
-
- if (supportsFloatingPoint()) {
- isNotInteger.link(this);
-
- addSlowCase(branch32(Above, regT1, Imm32(JSValue::LowestTag)));
-
- zeroDouble(fpRegT0);
- emitLoadDouble(cond, fpRegT1);
- addJump(branchDouble(DoubleNotEqual, fpRegT0, fpRegT1), target + 2);
- } 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 + 2);
-}
-
-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 + 2);
-
- 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 + 2);
-
- 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 + 2);
-
- 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 + 2);
-
- 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 + 3);
- addJump(branchPtr(NotEqual, regT0, ImmPtr(ptr)), target + 3);
-}
-
-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 + 2);
- 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->functionExpression(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_next_pname(Instruction* currentInstruction)
-{
- int dst = currentInstruction[1].u.operand;
- int iter = currentInstruction[2].u.operand;
- int target = currentInstruction[3].u.operand;
-
- load32(Address(callFrameRegister, (iter * sizeof(Register))), regT0);
-
- JITStubCall stubCall(this, cti_op_next_pname);
- stubCall.addArgument(regT0);
- stubCall.call();
-
- Jump endOfIter = branchTestPtr(Zero, regT0);
- emitStore(dst, regT1, regT0);
- map(m_bytecodeIndex + OPCODE_LENGTH(op_next_pname), dst, regT1, regT0);
- addJump(jump(), target + 3);
- endOfIter.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::DeletedValueTag)));
- 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 + 2);
-}
-
-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 argsNotCell = branch32(NotEqual, tagFor(RegisterFile::ArgumentsRegister, callFrameRegister), Imm32(JSValue::CellTag));
- Jump argsNotNull = branchTestPtr(NonZero, payloadFor(RegisterFile::ArgumentsRegister, callFrameRegister));
-
- // 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();
-
- argsNotCell.link(this);
- argsNotNull.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));
-
- JITStubCall stubCall(this, cti_op_profile_did_call);
- stubCall.addArgument(currentInstruction[1].u.operand);
- stubCall.call();
- noProfiler.link(this);
-}
-
-#else // USE(JSVALUE32_64)
-
-#define RECORD_JUMP_TARGET(targetOffset) \
- do { m_labels[m_bytecodeIndex + (targetOffset)].used(); } while (false)
-
-void JIT::privateCompileCTIMachineTrampolines(RefPtr<ExecutablePool>* executablePool, JSGlobalData* globalData, CodePtr* ctiStringLengthTrampoline, CodePtr* ctiVirtualCallPreLink, CodePtr* ctiVirtualCallLink, CodePtr* ctiVirtualCall, CodePtr* ctiNativeCallThunk)
-{
-#if ENABLE(JIT_OPTIMIZE_PROPERTY_ACCESS)
- // (2) The second function provides fast property access for string length
- Label stringLengthBegin = align();
-
- // Check eax is a string
- Jump string_failureCases1 = emitJumpIfNotJSCell(regT0);
- Jump string_failureCases2 = branchPtr(NotEqual, Address(regT0), ImmPtr(m_globalData->jsStringVPtr));
-
- // Checks out okay! - get the length from the Ustring.
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSString, m_value) + OBJECT_OFFSETOF(UString, m_rep)), regT0);
- load32(Address(regT0, OBJECT_OFFSETOF(UString::Rep, len)), regT0);
-
- Jump string_failureCases3 = branch32(Above, regT0, Imm32(JSImmediate::maxImmediateInt));
-
- // regT0 contains a 64 bit value (is positive, is zero extended) so we don't need sign extend here.
- emitFastArithIntToImmNoCheck(regT0, regT0);
-
- ret();
-#endif
-
- // (3) Trampolines for the slow cases of op_call / op_call_eval / op_construct.
- COMPILE_ASSERT(sizeof(CodeType) == 4, CodeTypeEnumMustBe32Bit);
-
- Label virtualCallPreLinkBegin = align();
-
- // Load the callee CodeBlock* into eax
- loadPtr(Address(regT2, OBJECT_OFFSETOF(JSFunction, m_body)), regT3);
- loadPtr(Address(regT3, OBJECT_OFFSETOF(FunctionBodyNode, m_code)), regT0);
- Jump hasCodeBlock1 = branchTestPtr(NonZero, regT0);
- preserveReturnAddressAfterCall(regT3);
- restoreArgumentReference();
- Call callJSFunction1 = call();
- emitGetJITStubArg(1, regT2);
- emitGetJITStubArg(3, regT1);
- restoreReturnAddressBeforeReturn(regT3);
- hasCodeBlock1.link(this);
-
- Jump isNativeFunc1 = branch32(Equal, Address(regT0, OBJECT_OFFSETOF(CodeBlock, m_codeType)), Imm32(NativeCode));
-
- // Check argCount matches callee arity.
- Jump arityCheckOkay1 = branch32(Equal, Address(regT0, OBJECT_OFFSETOF(CodeBlock, m_numParameters)), regT1);
- preserveReturnAddressAfterCall(regT3);
- emitPutJITStubArg(regT3, 2);
- emitPutJITStubArg(regT0, 4);
- restoreArgumentReference();
- Call callArityCheck1 = call();
- move(regT1, callFrameRegister);
- emitGetJITStubArg(1, regT2);
- emitGetJITStubArg(3, regT1);
- restoreReturnAddressBeforeReturn(regT3);
- arityCheckOkay1.link(this);
- isNativeFunc1.link(this);
-
- compileOpCallInitializeCallFrame();
-
- preserveReturnAddressAfterCall(regT3);
- emitPutJITStubArg(regT3, 2);
- restoreArgumentReference();
- Call callDontLazyLinkCall = call();
- emitGetJITStubArg(1, regT2);
- restoreReturnAddressBeforeReturn(regT3);
-
- jump(regT0);
-
- Label virtualCallLinkBegin = align();
-
- // Load the callee CodeBlock* into eax
- loadPtr(Address(regT2, OBJECT_OFFSETOF(JSFunction, m_body)), regT3);
- loadPtr(Address(regT3, OBJECT_OFFSETOF(FunctionBodyNode, m_code)), regT0);
- Jump hasCodeBlock2 = branchTestPtr(NonZero, regT0);
- preserveReturnAddressAfterCall(regT3);
- restoreArgumentReference();
- Call callJSFunction2 = call();
- emitGetJITStubArg(1, regT2);
- emitGetJITStubArg(3, regT1);
- restoreReturnAddressBeforeReturn(regT3);
- hasCodeBlock2.link(this);
-
- Jump isNativeFunc2 = branch32(Equal, Address(regT0, OBJECT_OFFSETOF(CodeBlock, m_codeType)), Imm32(NativeCode));
-
- // Check argCount matches callee arity.
- Jump arityCheckOkay2 = branch32(Equal, Address(regT0, OBJECT_OFFSETOF(CodeBlock, m_numParameters)), regT1);
- preserveReturnAddressAfterCall(regT3);
- emitPutJITStubArg(regT3, 2);
- emitPutJITStubArg(regT0, 4);
- restoreArgumentReference();
- Call callArityCheck2 = call();
- move(regT1, callFrameRegister);
- emitGetJITStubArg(1, regT2);
- emitGetJITStubArg(3, regT1);
- restoreReturnAddressBeforeReturn(regT3);
- arityCheckOkay2.link(this);
- isNativeFunc2.link(this);
-
- compileOpCallInitializeCallFrame();
-
- preserveReturnAddressAfterCall(regT3);
- emitPutJITStubArg(regT3, 2);
- restoreArgumentReference();
- Call callLazyLinkCall = call();
- restoreReturnAddressBeforeReturn(regT3);
-
- jump(regT0);
-
- Label virtualCallBegin = align();
-
- // Load the callee CodeBlock* into eax
- loadPtr(Address(regT2, OBJECT_OFFSETOF(JSFunction, m_body)), regT3);
- loadPtr(Address(regT3, OBJECT_OFFSETOF(FunctionBodyNode, m_code)), regT0);
- Jump hasCodeBlock3 = branchTestPtr(NonZero, regT0);
- preserveReturnAddressAfterCall(regT3);
- restoreArgumentReference();
- Call callJSFunction3 = call();
- emitGetJITStubArg(1, regT2);
- emitGetJITStubArg(3, regT1);
- restoreReturnAddressBeforeReturn(regT3);
- loadPtr(Address(regT2, OBJECT_OFFSETOF(JSFunction, m_body)), regT3); // reload the function body nody, so we can reload the code pointer.
- hasCodeBlock3.link(this);
-
- Jump isNativeFunc3 = branch32(Equal, Address(regT0, OBJECT_OFFSETOF(CodeBlock, m_codeType)), Imm32(NativeCode));
-
- // Check argCount matches callee arity.
- Jump arityCheckOkay3 = branch32(Equal, Address(regT0, OBJECT_OFFSETOF(CodeBlock, m_numParameters)), regT1);
- preserveReturnAddressAfterCall(regT3);
- emitPutJITStubArg(regT3, 2);
- emitPutJITStubArg(regT0, 4);
- restoreArgumentReference();
- Call callArityCheck3 = call();
- move(regT1, callFrameRegister);
- emitGetJITStubArg(1, regT2);
- emitGetJITStubArg(3, regT1);
- restoreReturnAddressBeforeReturn(regT3);
- loadPtr(Address(regT2, OBJECT_OFFSETOF(JSFunction, m_body)), regT3); // reload the function body nody, so we can reload the code pointer.
- arityCheckOkay3.link(this);
- isNativeFunc3.link(this);
-
- // load ctiCode from the new codeBlock.
- loadPtr(Address(regT3, OBJECT_OFFSETOF(FunctionBodyNode, m_jitCode)), regT0);
-
- compileOpCallInitializeCallFrame();
- jump(regT0);
-
-
- 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 PLATFORM(X86_64)
- emitGetFromCallFrameHeader32(RegisterFile::ArgumentCount, X86::ecx);
-
- // Allocate stack space for our arglist
- subPtr(Imm32(sizeof(ArgList)), stackPointerRegister);
- COMPILE_ASSERT((sizeof(ArgList) & 0xf) == 0, ArgList_should_by_16byte_aligned);
-
- // Set up arguments
- subPtr(Imm32(1), X86::ecx); // Don't include 'this' in argcount
-
- // Push argcount
- storePtr(X86::ecx, Address(stackPointerRegister, OBJECT_OFFSETOF(ArgList, m_argCount)));
-
- // Calculate the start of the callframe header, and store in edx
- addPtr(Imm32(-RegisterFile::CallFrameHeaderSize * (int32_t)sizeof(Register)), callFrameRegister, X86::edx);
-
- // Calculate start of arguments as callframe header - sizeof(Register) * argcount (ecx)
- mul32(Imm32(sizeof(Register)), X86::ecx, X86::ecx);
- subPtr(X86::ecx, X86::edx);
-
- // push pointer to arguments
- storePtr(X86::edx, Address(stackPointerRegister, OBJECT_OFFSETOF(ArgList, m_args)));
-
- // ArgList is passed by reference so is stackPointerRegister
- move(stackPointerRegister, X86::ecx);
-
- // edx currently points to the first argument, edx-sizeof(Register) points to 'this'
- loadPtr(Address(X86::edx, -(int32_t)sizeof(Register)), X86::edx);
-
- emitGetFromCallFrameHeaderPtr(RegisterFile::Callee, X86::esi);
-
- move(callFrameRegister, X86::edi);
-
- call(Address(X86::esi, OBJECT_OFFSETOF(JSFunction, m_data)));
-
- addPtr(Imm32(sizeof(ArgList)), stackPointerRegister);
-#elif PLATFORM(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) || PLATFORM(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;
- };
-#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)), regT1);
- storePtr(regT1, Address(stackPointerRegister, OBJECT_OFFSETOF(NativeCallFrameStructure, thisValue)));
-
-#if COMPILER(MSVC) || PLATFORM(LINUX)
- // ArgList is passed by reference so is stackPointerRegister + 4 * sizeof(Register)
- addPtr(Imm32(OBJECT_OFFSETOF(NativeCallFrameStructure, result)), stackPointerRegister, X86::ecx);
-
- // Plant callee
- emitGetFromCallFrameHeaderPtr(RegisterFile::Callee, X86::eax);
- storePtr(X86::eax, Address(stackPointerRegister, OBJECT_OFFSETOF(NativeCallFrameStructure, callee)));
-
- // Plant callframe
- move(callFrameRegister, X86::edx);
-
- call(Address(X86::eax, OBJECT_OFFSETOF(JSFunction, m_data)));
-
- // JSValue is a non-POD type
- loadPtr(Address(X86::eax), X86::eax);
-#else
- // Plant callee
- emitGetFromCallFrameHeaderPtr(RegisterFile::Callee, X86::edx);
-
- // Plant callframe
- move(callFrameRegister, X86::ecx);
- call(Address(X86::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 ENABLE(JIT_OPTIMIZE_NATIVE_CALL)
-#error "JIT_OPTIMIZE_NATIVE_CALL not yet supported on this platform."
-#else
- breakpoint();
-#endif
-
- // Check for an exception
- 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(reinterpret_cast<void*>(ctiVMThrowTrampoline)), regT2);
- emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, callFrameRegister);
- poke(callFrameRegister, OBJECT_OFFSETOF(struct JITStackFrame, callFrame) / sizeof (void*));
- restoreReturnAddressBeforeReturn(regT2);
- ret();
-
-
-#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(callArityCheck2, FunctionPtr(cti_op_call_arityCheck));
- patchBuffer.link(callArityCheck3, FunctionPtr(cti_op_call_arityCheck));
- patchBuffer.link(callJSFunction1, FunctionPtr(cti_op_call_JSFunction));
- patchBuffer.link(callJSFunction2, FunctionPtr(cti_op_call_JSFunction));
- patchBuffer.link(callJSFunction3, FunctionPtr(cti_op_call_JSFunction));
- patchBuffer.link(callDontLazyLinkCall, FunctionPtr(cti_vm_dontLazyLinkCall));
- patchBuffer.link(callLazyLinkCall, FunctionPtr(cti_vm_lazyLinkCall));
-
- CodeRef finalCode = patchBuffer.finalizeCode();
- *executablePool = finalCode.m_executablePool;
-
- *ctiVirtualCallPreLink = trampolineAt(finalCode, virtualCallPreLinkBegin);
- *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
-}
-
-void JIT::emit_op_mov(Instruction* currentInstruction)
-{
- int dst = currentInstruction[1].u.operand;
- int src = currentInstruction[2].u.operand;
-
- if (m_codeBlock->isConstantRegisterIndex(src)) {
- storePtr(ImmPtr(JSValue::encode(getConstantOperand(src))), Address(callFrameRegister, dst * sizeof(Register)));
- if (dst == m_lastResultBytecodeRegister)
- killLastResultRegister();
- } else if ((src == m_lastResultBytecodeRegister) || (dst == m_lastResultBytecodeRegister)) {
- // If either the src or dst is the cached register go though
- // get/put registers to make sure we track this correctly.
- emitGetVirtualRegister(src, regT0);
- emitPutVirtualRegister(dst);
- } else {
- // Perform the copy via regT1; do not disturb any mapping in regT0.
- loadPtr(Address(callFrameRegister, src * sizeof(Register)), regT1);
- storePtr(regT1, Address(callFrameRegister, dst * sizeof(Register)));
- }
-}
-
-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))));
- ret();
-}
-
-void JIT::emit_op_jmp(Instruction* currentInstruction)
-{
- unsigned target = currentInstruction[1].u.operand;
- addJump(jump(), target + 1);
- RECORD_JUMP_TARGET(target + 1);
-}
-
-void JIT::emit_op_loop(Instruction* currentInstruction)
-{
- emitTimeoutCheck();
-
- unsigned target = currentInstruction[1].u.operand;
- addJump(jump(), target + 1);
-}
-
-void JIT::emit_op_loop_if_less(Instruction* currentInstruction)
-{
- emitTimeoutCheck();
-
- unsigned op1 = currentInstruction[1].u.operand;
- unsigned op2 = currentInstruction[2].u.operand;
- unsigned target = currentInstruction[3].u.operand;
- 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(LessThan, regT0, Imm32(op2imm)), target + 3);
- } else if (isOperandConstantImmediateInt(op1)) {
- emitGetVirtualRegister(op2, regT0);
- emitJumpSlowCaseIfNotImmediateInteger(regT0);
-#if USE(JSVALUE64)
- int32_t op1imm = getConstantOperandImmediateInt(op1);
-#else
- int32_t op1imm = static_cast<int32_t>(JSImmediate::rawValue(getConstantOperand(op1)));
-#endif
- addJump(branch32(GreaterThan, regT0, Imm32(op1imm)), target + 3);
- } else {
- emitGetVirtualRegisters(op1, regT0, op2, regT1);
- emitJumpSlowCaseIfNotImmediateInteger(regT0);
- emitJumpSlowCaseIfNotImmediateInteger(regT1);
- addJump(branch32(LessThan, regT0, regT1), target + 3);
- }
-}
-
-void JIT::emit_op_loop_if_lesseq(Instruction* currentInstruction)
-{
- emitTimeoutCheck();
-
- unsigned op1 = currentInstruction[1].u.operand;
- unsigned op2 = currentInstruction[2].u.operand;
- unsigned target = currentInstruction[3].u.operand;
- 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 + 3);
- } else {
- emitGetVirtualRegisters(op1, regT0, op2, regT1);
- emitJumpSlowCaseIfNotImmediateInteger(regT0);
- emitJumpSlowCaseIfNotImmediateInteger(regT1);
- addJump(branch32(LessThanOrEqual, regT0, regT1), target + 3);
- }
-}
-
-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)
-{
- // Load the operands (baseVal, proto, and value respectively) into registers.
- // We use regT0 for baseVal since we will be done with this first, and we can then use it for the result.
- emitGetVirtualRegister(currentInstruction[3].u.operand, regT0);
- emitGetVirtualRegister(currentInstruction[4].u.operand, regT1);
- emitGetVirtualRegister(currentInstruction[2].u.operand, regT2);
-
- // Check that baseVal & proto are cells.
- emitJumpSlowCaseIfNotJSCell(regT0);
- emitJumpSlowCaseIfNotJSCell(regT1);
-
- // Check that baseVal is an object, that it 'ImplementsHasInstance' but that it does not 'OverridesHasInstance'.
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSCell, m_structure)), regT0);
- addSlowCase(branch32(NotEqual, Address(regT0, OBJECT_OFFSETOF(Structure, m_typeInfo.m_type)), Imm32(ObjectType)));
- addSlowCase(branchTest32(Zero, Address(regT0, OBJECT_OFFSETOF(Structure, m_typeInfo.m_flags)), Imm32(ImplementsDefaultHasInstance)));
-
- // If value is not an Object, return false.
- Jump valueIsImmediate = emitJumpIfNotJSCell(regT2);
- loadPtr(Address(regT2, OBJECT_OFFSETOF(JSCell, m_structure)), regT0);
- Jump valueIsNotObject = branch32(NotEqual, Address(regT0, OBJECT_OFFSETOF(Structure, m_typeInfo.m_type)), Imm32(ObjectType));
-
- // Check proto is object.
- loadPtr(Address(regT1, OBJECT_OFFSETOF(JSCell, m_structure)), regT0);
- addSlowCase(branch32(NotEqual, Address(regT0, OBJECT_OFFSETOF(Structure, m_typeInfo.m_type)), Imm32(ObjectType)));
-
- // 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);
- 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);
- Jump isInstance = branchPtr(Equal, regT2, regT1);
- branchPtr(NotEqual, regT2, ImmPtr(JSValue::encode(jsNull())), loop);
-
- // We get here either by dropping out of the loop, or if value was not an Object. Result is false.
- valueIsImmediate.link(this);
- valueIsNotObject.link(this);
- move(ImmPtr(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(currentInstruction[1].u.operand);
-}
-
-void JIT::emit_op_new_func(Instruction* currentInstruction)
-{
- JITStubCall stubCall(this, cti_op_new_func);
- stubCall.addArgument(ImmPtr(m_codeBlock->function(currentInstruction[2].u.operand)));
- stubCall.call(currentInstruction[1].u.operand);
-}
-
-void JIT::emit_op_call(Instruction* currentInstruction)
-{
- compileOpCall(op_call, currentInstruction, m_callLinkInfoIndex++);
-}
-
-void JIT::emit_op_call_eval(Instruction* currentInstruction)
-{
- 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_construct(Instruction* currentInstruction)
-{
- compileOpCall(op_construct, currentInstruction, m_callLinkInfoIndex++);
-}
-
-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);
- 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);
-}
-
-void JIT::emit_op_get_scoped_var(Instruction* currentInstruction)
-{
- int skip = currentInstruction[3].u.operand + m_codeBlock->needsFullScopeChain();
-
- emitGetFromCallFrameHeaderPtr(RegisterFile::ScopeChain, regT0);
- 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);
- emitPutVirtualRegister(currentInstruction[1].u.operand);
-}
-
-void JIT::emit_op_put_scoped_var(Instruction* currentInstruction)
-{
- int skip = currentInstruction[2].u.operand + m_codeBlock->needsFullScopeChain();
-
- emitGetFromCallFrameHeaderPtr(RegisterFile::ScopeChain, regT1);
- emitGetVirtualRegister(currentInstruction[3].u.operand, regT0);
- 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);
-}
-
-void JIT::emit_op_tear_off_activation(Instruction* currentInstruction)
-{
- JITStubCall stubCall(this, cti_op_tear_off_activation);
- stubCall.addArgument(currentInstruction[1].u.operand, regT2);
- stubCall.call();
-}
-
-void JIT::emit_op_tear_off_arguments(Instruction*)
-{
- JITStubCall(this, cti_op_tear_off_arguments).call();
-}
-
-void JIT::emit_op_ret(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);
-
- // 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_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_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;
- int src = currentInstruction[2].u.operand;
-
- emitGetVirtualRegister(src, regT0);
-
- Jump isImm = emitJumpIfNotJSCell(regT0);
- addSlowCase(branchPtr(NotEqual, Address(regT0), ImmPtr(m_globalData->jsStringVPtr)));
- isImm.link(this);
-
- if (dst != src)
- emitPutVirtualRegister(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_loop_if_true(Instruction* currentInstruction)
-{
- emitTimeoutCheck();
-
- unsigned target = currentInstruction[2].u.operand;
- emitGetVirtualRegister(currentInstruction[1].u.operand, regT0);
-
- Jump isZero = branchPtr(Equal, regT0, ImmPtr(JSValue::encode(jsNumber(m_globalData, 0))));
- addJump(emitJumpIfImmediateInteger(regT0), target + 2);
-
- addJump(branchPtr(Equal, regT0, ImmPtr(JSValue::encode(jsBoolean(true)))), target + 2);
- addSlowCase(branchPtr(NotEqual, regT0, ImmPtr(JSValue::encode(jsBoolean(false)))));
-
- isZero.link(this);
-};
-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)
-{
- // Fast case
- void* globalObject = currentInstruction[2].u.jsCell;
- Identifier* ident = &m_codeBlock->identifier(currentInstruction[3].u.operand);
-
- unsigned currentIndex = m_globalResolveInfoIndex++;
- void* structureAddress = &(m_codeBlock->globalResolveInfo(currentIndex).structure);
- void* offsetAddr = &(m_codeBlock->globalResolveInfo(currentIndex).offset);
-
- // 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
-
- // 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(BaseIndex(regT0, regT1, ScalePtr), regT0);
- emitPutVirtualRegister(currentInstruction[1].u.operand);
- Jump end = jump();
-
- // Slow case
- noMatch.link(this);
- JITStubCall stubCall(this, cti_op_resolve_global);
- stubCall.addArgument(ImmPtr(globalObject));
- stubCall.addArgument(ImmPtr(ident));
- stubCall.addArgument(Imm32(currentIndex));
- stubCall.call(currentInstruction[1].u.operand);
- end.link(this);
-}
-
-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);
- emitPutVirtualRegister(currentInstruction[1].u.operand);
-}
+ emitPutVirtualRegister(currentInstruction[1].u.operand);
+}
void JIT::emit_op_jfalse(Instruction* currentInstruction)
{
unsigned target = currentInstruction[2].u.operand;
emitGetVirtualRegister(currentInstruction[1].u.operand, regT0);
- addJump(branchPtr(Equal, regT0, ImmPtr(JSValue::encode(jsNumber(m_globalData, 0)))), target + 2);
+ addJump(branch64(Equal, regT0, TrustedImm64(JSValue::encode(jsNumber(0)))), target);
Jump isNonZero = emitJumpIfImmediateInteger(regT0);
- addJump(branchPtr(Equal, regT0, ImmPtr(JSValue::encode(jsBoolean(false)))), target + 2);
- addSlowCase(branchPtr(NotEqual, regT0, ImmPtr(JSValue::encode(jsBoolean(true)))));
+ addJump(branch64(Equal, regT0, TrustedImm64(JSValue::encode(jsBoolean(false)))), target);
+ addSlowCase(branch64(NotEqual, regT0, TrustedImm64(JSValue::encode(jsBoolean(true)))));
isNonZero.link(this);
- RECORD_JUMP_TARGET(target + 2);
-};
+}
+
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 + 2);
- Jump wasNotImmediate = jump();
+ loadPtr(Address(regT0, JSCell::structureOffset()), regT2);
+ Jump isNotMasqueradesAsUndefined = branchTest8(Zero, Address(regT2, Structure::typeInfoFlagsOffset()), TrustedImm32(MasqueradesAsUndefined));
+ move(TrustedImmPtr(m_codeBlock->globalObject()), regT0);
+ addJump(branchPtr(Equal, Address(regT2, Structure::globalObjectOffset()), regT0), target);
+ Jump masqueradesGlobalObjectIsForeign = 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 + 2);
+ and64(TrustedImm32(~TagBitUndefined), regT0);
+ addJump(branch64(Equal, regT0, TrustedImm64(JSValue::encode(jsNull()))), target);
- wasNotImmediate.link(this);
- RECORD_JUMP_TARGET(target + 2);
+ isNotMasqueradesAsUndefined.link(this);
+ masqueradesGlobalObjectIsForeign.link(this);
};
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 + 2);
+ loadPtr(Address(regT0, JSCell::structureOffset()), regT2);
+ addJump(branchTest8(Zero, Address(regT2, Structure::typeInfoFlagsOffset()), TrustedImm32(MasqueradesAsUndefined)), target);
+ move(TrustedImmPtr(m_codeBlock->globalObject()), regT0);
+ addJump(branchPtr(NotEqual, Address(regT2, Structure::globalObjectOffset()), regT0), 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 + 2);
+ and64(TrustedImm32(~TagBitUndefined), regT0);
+ addJump(branch64(NotEqual, regT0, TrustedImm64(JSValue::encode(jsNull()))), target);
wasNotImmediate.link(this);
- RECORD_JUMP_TARGET(target + 2);
}
void JIT::emit_op_jneq_ptr(Instruction* currentInstruction)
{
unsigned src = currentInstruction[1].u.operand;
- JSCell* ptr = currentInstruction[2].u.jsCell;
+ Special::Pointer ptr = currentInstruction[2].u.specialPointer;
unsigned target = currentInstruction[3].u.operand;
emitGetVirtualRegister(src, regT0);
- addJump(branchPtr(NotEqual, regT0, ImmPtr(JSValue::encode(JSValue(ptr)))), target + 3);
-
- RECORD_JUMP_TARGET(target + 3);
-}
-
-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 + 2);
- m_jsrSites.append(JSRInfo(storeLocation, label()));
- killLastResultRegister();
- RECORD_JUMP_TARGET(target + 2);
-}
-
-void JIT::emit_op_sret(Instruction* currentInstruction)
-{
- jump(Address(callFrameRegister, sizeof(Register) * currentInstruction[1].u.operand));
- killLastResultRegister();
+ addJump(branchPtr(NotEqual, regT0, TrustedImmPtr(actualPointerFor(m_codeBlock, ptr))), target);
}
void JIT::emit_op_eq(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);
}
-void JIT::emit_op_bitnot(Instruction* currentInstruction)
-{
- 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(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->functionExpression(currentInstruction[2].u.operand)));
- stubCall.call(currentInstruction[1].u.operand);
-}
-
void JIT::emit_op_jtrue(Instruction* currentInstruction)
{
unsigned target = currentInstruction[2].u.operand;
emitGetVirtualRegister(currentInstruction[1].u.operand, regT0);
- Jump isZero = branchPtr(Equal, regT0, ImmPtr(JSValue::encode(jsNumber(m_globalData, 0))));
- addJump(emitJumpIfImmediateInteger(regT0), target + 2);
+ Jump isZero = branch64(Equal, regT0, TrustedImm64(JSValue::encode(jsNumber(0))));
+ addJump(emitJumpIfImmediateInteger(regT0), target);
- addJump(branchPtr(Equal, regT0, ImmPtr(JSValue::encode(jsBoolean(true)))), target + 2);
- addSlowCase(branchPtr(NotEqual, regT0, ImmPtr(JSValue::encode(jsBoolean(false)))));
+ addJump(branch64(Equal, regT0, TrustedImm64(JSValue::encode(jsBoolean(true)))), target);
+ addSlowCase(branch64(NotEqual, regT0, TrustedImm64(JSValue::encode(jsBoolean(false)))));
isZero.link(this);
- RECORD_JUMP_TARGET(target + 2);
}
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);
{
emitGetVirtualRegisters(currentInstruction[2].u.operand, regT0, currentInstruction[3].u.operand, regT1);
emitJumpSlowCaseIfNotImmediateIntegers(regT0, regT1, regT2);
- xorPtr(regT1, regT0);
+ xor64(regT1, regT0);
emitFastArithReTagImmediate(regT0, regT0);
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);
emitJumpSlowCaseIfNotImmediateIntegers(regT0, regT1, regT2);
- orPtr(regT1, regT0);
+ or64(regT1, regT0);
emitPutVirtualRegister(currentInstruction[1].u.operand);
}
#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;
+
+ emitGetVirtualRegister(base, regT0);
+ if (!m_codeBlock->isKnownNotImmediate(base))
+ isNotObject.append(emitJumpIfNotJSCell(regT0));
+ if (base != m_codeBlock->thisRegister() || m_codeBlock->isStrictMode()) {
+ loadPtr(Address(regT0, JSCell::structureOffset()), regT2);
+ isNotObject.append(emitJumpIfNotObject(regT2));
+ }
+
+ // 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);
+ store64(tagTypeNumberRegister, addressFor(i));
+ store32(TrustedImm32(Int32Tag), intTagFor(size));
+ store32(regT3, intPayloadFor(size));
+ Jump end = jump();
+
+ isNotObject.link(this);
+ move(regT0, regT1);
+ and32(TrustedImm32(~TagBitUndefined), regT1);
+ addJump(branch32(Equal, regT1, TrustedImm32(ValueNull)), breakTarget);
+
+ JITStubCall toObjectStubCall(this, cti_to_object);
+ toObjectStubCall.addArgument(regT0);
+ toObjectStubCall.call(base);
+ jump().linkTo(isObject, this);
+
+ end.link(this);
+}
+
void JIT::emit_op_next_pname(Instruction* currentInstruction)
{
- JITStubCall stubCall(this, cti_op_next_pname);
- stubCall.addArgument(currentInstruction[2].u.operand, regT2);
+ 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(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);
+
+ load64(BaseIndex(regT2, regT0, TimesEight), regT2);
+
+ emitPutVirtualRegister(dst, regT2);
+
+ // Increment i
+ add32(TrustedImm32(1), regT0);
+ store32(regT0, intPayloadFor(i));
+
+ // Verify that i is valid:
+ emitGetVirtualRegister(base, regT0);
+
+ // Test base's structure
+ loadPtr(Address(regT0, JSCell::structureOffset()), 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);
+ load64(Address(regT2, Structure::prototypeOffset()), regT2);
+ callHasProperty.append(emitJumpIfNotJSCell(regT2));
+ loadPtr(Address(regT2, JSCell::structureOffset()), regT2);
+ callHasProperty.append(branchPtr(NotEqual, regT2, Address(regT3)));
+ addPtr(TrustedImm32(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);
+ emitGetVirtualRegister(dst, regT1);
+ JITStubCall stubCall(this, cti_has_property);
+ stubCall.addArgument(regT0);
+ stubCall.addArgument(regT1);
stubCall.call();
- Jump endOfIter = branchTestPtr(Zero, regT0);
- emitPutVirtualRegister(currentInstruction[1].u.operand);
- addJump(jump(), currentInstruction[3].u.operand + 3);
- endOfIter.link(this);
+
+ // 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)
+void JIT::emit_op_push_with_scope(Instruction* currentInstruction)
{
- JITStubCall stubCall(this, cti_op_push_scope);
+ JITStubCall stubCall(this, cti_op_push_with_scope);
stubCall.addArgument(currentInstruction[1].u.operand, regT2);
- stubCall.call(currentInstruction[1].u.operand);
+ stubCall.call();
}
void JIT::emit_op_pop_scope(Instruction*)
unsigned src2 = currentInstruction[3].u.operand;
emitGetVirtualRegisters(src1, regT0, src2, regT1);
-
- // Jump to a slow case if either operand is a number, or if both are JSCell*s.
+
+ // Jump slow if both are cells (to cover strings).
move(regT0, regT2);
- orPtr(regT1, regT2);
+ or64(regT1, regT2);
addSlowCase(emitJumpIfJSCell(regT2));
- addSlowCase(emitJumpIfImmediateNumber(regT2));
+
+ // Jump slow if either is a double. First test if it's an integer, which is fine, and then test
+ // if it's a double.
+ Jump leftOK = emitJumpIfImmediateInteger(regT0);
+ addSlowCase(emitJumpIfImmediateNumber(regT0));
+ leftOK.link(this);
+ Jump rightOK = emitJumpIfImmediateInteger(regT1);
+ addSlowCase(emitJumpIfImmediateNumber(regT1));
+ rightOK.link(this);
if (type == OpStrictEq)
- set32(Equal, regT1, regT0, regT0);
+ compare64(Equal, regT1, regT0, regT0);
else
- set32(NotEqual, regT1, regT0, regT0);
+ compare64(NotEqual, regT1, regT0, regT0);
emitTagAsBoolImmediate(regT0);
emitPutVirtualRegister(dst);
compileOpStrictEq(currentInstruction, OpNStrictEq);
}
-void JIT::emit_op_to_jsnumber(Instruction* currentInstruction)
+void JIT::emit_op_to_number(Instruction* currentInstruction)
{
int srcVReg = currentInstruction[2].u.operand;
emitGetVirtualRegister(srcVReg, regT0);
- 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)));
-
- wasImmediate.link(this);
+ addSlowCase(emitJumpIfNotImmediateNumber(regT0));
emitPutVirtualRegister(currentInstruction[1].u.operand);
}
-void JIT::emit_op_push_new_scope(Instruction* currentInstruction)
+void JIT::emit_op_push_name_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, regT2);
- stubCall.call(currentInstruction[1].u.operand);
+ JITStubCall stubCall(this, cti_op_push_name_scope);
+ stubCall.addArgument(TrustedImmPtr(&m_codeBlock->identifier(currentInstruction[1].u.operand)));
+ stubCall.addArgument(currentInstruction[2].u.operand, regT2);
+ stubCall.addArgument(TrustedImm32(currentInstruction[3].u.operand));
+ stubCall.call();
}
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, vm) / sizeof(void*));
+ load64(Address(regT3, OBJECT_OFFSETOF(VM, exception)), regT0);
+ store64(TrustedImm64(JSValue::encode(JSValue())), Address(regT3, OBJECT_OFFSETOF(VM, exception)));
emitPutVirtualRegister(currentInstruction[1].u.operand);
}
-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 + 2);
- RECORD_JUMP_TARGET(currentInstruction[2].u.operand + 2);
-}
-
void JIT::emit_op_switch_imm(Instruction* currentInstruction)
{
unsigned tableIndex = currentInstruction[1].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));
+ m_switches.append(SwitchRecord(jumpTable, m_bytecodeOffset, defaultOffset, SwitchRecord::Immediate));
jumpTable->ctiOffsets.grow(jumpTable->branchOffsets.size());
JITStubCall stubCall(this, cti_op_switch_imm);
stubCall.addArgument(scrutinee, regT2);
- stubCall.addArgument(Imm32(tableIndex));
+ stubCall.addArgument(TrustedImm32(tableIndex));
stubCall.call();
jump(regT0);
}
// 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);
stubCall.addArgument(scrutinee, regT2);
- stubCall.addArgument(Imm32(tableIndex));
+ stubCall.addArgument(TrustedImm32(tableIndex));
stubCall.call();
jump(regT0);
}
// 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);
- stubCall.addArgument(Imm32(tableIndex));
+ stubCall.addArgument(TrustedImm32(tableIndex));
stubCall.call();
jump(regT0);
}
-void JIT::emit_op_new_error(Instruction* currentInstruction)
+void JIT::emit_op_throw_static_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_static_error);
+ if (!m_codeBlock->getConstant(currentInstruction[1].u.operand).isNumber())
+ stubCall.addArgument(TrustedImm64(JSValue::encode(m_codeBlock->getConstant(currentInstruction[1].u.operand))));
+ else
+ stubCall.addArgument(Imm64(JSValue::encode(m_codeBlock->getConstant(currentInstruction[1].u.operand))));
+ stubCall.addArgument(TrustedImm32(currentInstruction[2].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.addArgument(TrustedImm32(currentInstruction[1].u.operand));
+ stubCall.addArgument(TrustedImm32(currentInstruction[2].u.operand));
+ stubCall.addArgument(TrustedImm32(currentInstruction[3].u.operand));
+ stubCall.addArgument(TrustedImm32(currentInstruction[4].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);
+ Jump isMasqueradesAsUndefined = branchTest8(NonZero, Address(regT2, Structure::typeInfoFlagsOffset()), TrustedImm32(MasqueradesAsUndefined));
+ move(TrustedImm32(0), regT0);
+ Jump wasNotMasqueradesAsUndefined = jump();
+ isMasqueradesAsUndefined.link(this);
+ move(TrustedImmPtr(m_codeBlock->globalObject()), regT0);
+ loadPtr(Address(regT2, Structure::globalObjectOffset()), regT2);
+ comparePtr(Equal, regT0, regT2, regT0);
Jump wasNotImmediate = jump();
isImmediate.link(this);
- andPtr(Imm32(~JSImmediate::ExtendedTagBitUndefined), regT0);
- setPtr(Equal, regT0, Imm32(JSImmediate::FullTagTypeNull), regT0);
+ and64(TrustedImm32(~TagBitUndefined), regT0);
+ compare64(Equal, regT0, TrustedImm32(ValueNull), regT0);
wasNotImmediate.link(this);
+ wasNotMasqueradesAsUndefined.link(this);
emitTagAsBoolImmediate(regT0);
emitPutVirtualRegister(dst);
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);
+ Jump isMasqueradesAsUndefined = branchTest8(NonZero, Address(regT2, Structure::typeInfoFlagsOffset()), TrustedImm32(MasqueradesAsUndefined));
+ move(TrustedImm32(1), regT0);
+ Jump wasNotMasqueradesAsUndefined = jump();
+ isMasqueradesAsUndefined.link(this);
+ move(TrustedImmPtr(m_codeBlock->globalObject()), regT0);
+ loadPtr(Address(regT2, Structure::globalObjectOffset()), regT2);
+ comparePtr(NotEqual, regT0, regT2, regT0);
Jump wasNotImmediate = jump();
isImmediate.link(this);
- andPtr(Imm32(~JSImmediate::ExtendedTagBitUndefined), regT0);
- setPtr(NotEqual, regT0, Imm32(JSImmediate::FullTagTypeNull), regT0);
+ and64(TrustedImm32(~TagBitUndefined), regT0);
+ compare64(NotEqual, regT0, TrustedImm32(ValueNull), regT0);
wasNotImmediate.link(this);
+ wasNotMasqueradesAsUndefined.link(this);
emitTagAsBoolImmediate(regT0);
emitPutVirtualRegister(dst);
-
}
void JIT::emit_op_enter(Instruction*)
{
+ emitEnterOptimizationCheck();
+
// 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);
-
}
-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 = branchTest64(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));
- if (m_codeBlock->m_numParameters == 1)
- JITStubCall(this, cti_op_create_arguments_no_params).call();
- else
- JITStubCall(this, cti_op_create_arguments).call();
+ unsigned dst = currentInstruction[1].u.operand;
+
+ Jump argsCreated = branchTest64(NonZero, Address(callFrameRegister, sizeof(Register) * dst));
+ JITStubCall(this, cti_op_create_arguments).call();
+ emitPutVirtualRegister(dst);
+ emitPutVirtualRegister(unmodifiedArgumentsRegister(dst));
argsCreated.link(this);
}
-
-void JIT::emit_op_init_arguments(Instruction*)
-{
- storePtr(ImmPtr(0), Address(callFrameRegister, sizeof(Register) * RegisterFile::ArgumentsRegister));
-}
-void JIT::emit_op_convert_this(Instruction* currentInstruction)
+void JIT::emit_op_init_lazy_reg(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)));
+ unsigned dst = currentInstruction[1].u.operand;
+ store64(TrustedImm64((int64_t)0), Address(callFrameRegister, sizeof(Register) * dst));
}
-void JIT::emit_op_profile_will_call(Instruction* currentInstruction)
+void JIT::emit_op_convert_this(Instruction* currentInstruction)
{
- peek(regT1, OBJECT_OFFSETOF(JITStackFrame, enabledProfilerReference) / sizeof (void*));
- Jump noProfiler = branchTestPtr(Zero, Address(regT1));
-
- JITStubCall stubCall(this, cti_op_profile_will_call);
- stubCall.addArgument(currentInstruction[1].u.operand, regT1);
- stubCall.call();
- noProfiler.link(this);
+ emitGetVirtualRegister(currentInstruction[1].u.operand, regT1);
+ emitJumpSlowCaseIfNotJSCell(regT1);
+ if (shouldEmitProfiling()) {
+ loadPtr(Address(regT1, JSCell::structureOffset()), regT0);
+ emitValueProfilingSite();
+ }
+ addSlowCase(branchPtr(Equal, Address(regT1, JSCell::structureOffset()), TrustedImmPtr(m_vm->stringStructure.get())));
}
-void JIT::emit_op_profile_did_call(Instruction* currentInstruction)
+void JIT::emit_op_get_callee(Instruction* currentInstruction)
{
- peek(regT1, OBJECT_OFFSETOF(JITStackFrame, enabledProfilerReference) / sizeof (void*));
- Jump noProfiler = branchTestPtr(Zero, Address(regT1));
-
- JITStubCall stubCall(this, cti_op_profile_did_call);
- stubCall.addArgument(currentInstruction[1].u.operand, regT1);
- stubCall.call();
- noProfiler.link(this);
+ unsigned result = currentInstruction[1].u.operand;
+ emitGetFromCallFrameHeaderPtr(JSStack::Callee, regT0);
+ emitValueProfilingSite();
+ emitPutVirtualRegister(result);
}
-
-// Slow cases
-
-void JIT::emitSlow_op_convert_this(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+void JIT::emit_op_create_this(Instruction* currentInstruction)
{
- linkSlowCase(iter);
- linkSlowCase(iter);
- JITStubCall stubCall(this, cti_op_convert_this);
- stubCall.addArgument(regT0);
- stubCall.call(currentInstruction[1].u.operand);
-}
+ int callee = currentInstruction[2].u.operand;
+ RegisterID calleeReg = regT0;
+ RegisterID resultReg = regT0;
+ RegisterID allocatorReg = regT1;
+ RegisterID structureReg = regT2;
+ RegisterID scratchReg = regT3;
-void JIT::emitSlow_op_construct_verify(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
-{
- linkSlowCase(iter);
- linkSlowCase(iter);
- emitGetVirtualRegister(currentInstruction[2].u.operand, regT0);
+ emitGetVirtualRegister(callee, calleeReg);
+ loadPtr(Address(calleeReg, JSFunction::offsetOfAllocationProfile() + ObjectAllocationProfile::offsetOfAllocator()), allocatorReg);
+ loadPtr(Address(calleeReg, JSFunction::offsetOfAllocationProfile() + ObjectAllocationProfile::offsetOfStructure()), structureReg);
+ addSlowCase(branchTestPtr(Zero, allocatorReg));
+
+ emitAllocateJSObject(allocatorReg, structureReg, resultReg, scratchReg);
emitPutVirtualRegister(currentInstruction[1].u.operand);
}
-void JIT::emitSlow_op_to_primitive(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+void JIT::emitSlow_op_create_this(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
- linkSlowCase(iter);
+ linkSlowCase(iter); // doesn't have an allocation profile
+ linkSlowCase(iter); // allocation failed
- JITStubCall stubCall(this, cti_op_to_primitive);
- stubCall.addArgument(regT0);
+ JITStubCall stubCall(this, cti_op_create_this);
+ stubCall.addArgument(TrustedImm32(currentInstruction[3].u.operand));
stubCall.call(currentInstruction[1].u.operand);
}
-void JIT::emitSlow_op_get_by_val(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+void JIT::emit_op_profile_will_call(Instruction* currentInstruction)
{
- // The slow void JIT::emitSlow_that handles accesses to arrays (below) may jump back up to here.
- Label beginGetByValSlow(this);
-
- Jump notImm = getSlowCase(iter);
- linkSlowCase(iter);
- linkSlowCase(iter);
- emitFastArithIntToImmNoCheck(regT1, regT1);
-
- notImm.link(this);
- JITStubCall stubCall(this, cti_op_get_by_val);
- stubCall.addArgument(regT0);
- stubCall.addArgument(regT1);
- stubCall.call(currentInstruction[1].u.operand);
- emitJumpSlowToHot(jump(), OPCODE_LENGTH(op_get_by_val));
-
- // This is slow void JIT::emitSlow_that handles accesses to arrays above the fast cut-off.
- // First, check if this is an access to the vector
- linkSlowCase(iter);
- branch32(AboveOrEqual, regT1, Address(regT2, OBJECT_OFFSETOF(ArrayStorage, m_vectorLength)), beginGetByValSlow);
-
- // okay, missed the fast region, but it is still in the vector. Get the value.
- loadPtr(BaseIndex(regT2, regT1, ScalePtr, OBJECT_OFFSETOF(ArrayStorage, m_vector[0])), regT2);
- // Check whether the value loaded is zero; if so we need to return undefined.
- branchTestPtr(Zero, regT2, beginGetByValSlow);
- move(regT2, regT0);
- emitPutVirtualRegister(currentInstruction[1].u.operand, regT0);
+ JITStubCall stubCall(this, cti_op_profile_will_call);
+ stubCall.addArgument(currentInstruction[1].u.operand, regT1);
+ stubCall.call();
}
-void JIT::emitSlow_op_loop_if_less(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+void JIT::emit_op_profile_did_call(Instruction* currentInstruction)
{
- unsigned op1 = currentInstruction[1].u.operand;
- unsigned op2 = currentInstruction[2].u.operand;
- unsigned target = currentInstruction[3].u.operand;
- if (isOperandConstantImmediateInt(op2)) {
- linkSlowCase(iter);
- JITStubCall stubCall(this, cti_op_loop_if_less);
- stubCall.addArgument(regT0);
- stubCall.addArgument(op2, regT2);
- stubCall.call();
- emitJumpSlowToHot(branchTest32(NonZero, regT0), target + 3);
- } else if (isOperandConstantImmediateInt(op1)) {
- linkSlowCase(iter);
- JITStubCall stubCall(this, cti_op_loop_if_less);
- stubCall.addArgument(op1, regT2);
- stubCall.addArgument(regT0);
- stubCall.call();
- emitJumpSlowToHot(branchTest32(NonZero, regT0), target + 3);
- } else {
- linkSlowCase(iter);
- linkSlowCase(iter);
- JITStubCall stubCall(this, cti_op_loop_if_less);
- stubCall.addArgument(regT0);
- stubCall.addArgument(regT1);
- stubCall.call();
- emitJumpSlowToHot(branchTest32(NonZero, regT0), target + 3);
- }
+ JITStubCall stubCall(this, cti_op_profile_did_call);
+ stubCall.addArgument(currentInstruction[1].u.operand, regT1);
+ stubCall.call();
}
-void JIT::emitSlow_op_loop_if_lesseq(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
-{
- unsigned op2 = currentInstruction[2].u.operand;
- unsigned target = currentInstruction[3].u.operand;
- if (isOperandConstantImmediateInt(op2)) {
- linkSlowCase(iter);
- JITStubCall stubCall(this, cti_op_loop_if_lesseq);
- stubCall.addArgument(regT0);
- stubCall.addArgument(currentInstruction[2].u.operand, regT2);
- stubCall.call();
- emitJumpSlowToHot(branchTest32(NonZero, regT0), target + 3);
- } else {
- linkSlowCase(iter);
- linkSlowCase(iter);
- JITStubCall stubCall(this, cti_op_loop_if_lesseq);
- stubCall.addArgument(regT0);
- stubCall.addArgument(regT1);
- stubCall.call();
- emitJumpSlowToHot(branchTest32(NonZero, regT0), target + 3);
- }
-}
-void JIT::emitSlow_op_put_by_val(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
-{
- // Normal slow cases - either is not an immediate imm, or is an array.
- Jump notImm = getSlowCase(iter);
- linkSlowCase(iter);
- linkSlowCase(iter);
- emitFastArithIntToImmNoCheck(regT1, regT1);
+// Slow cases
- notImm.link(this); {
- JITStubCall stubCall(this, cti_op_put_by_val);
- stubCall.addArgument(regT0);
- stubCall.addArgument(regT1);
- stubCall.addArgument(currentInstruction[3].u.operand, regT2);
- stubCall.call();
- emitJumpSlowToHot(jump(), OPCODE_LENGTH(op_put_by_val));
- }
+void JIT::emitSlow_op_convert_this(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+{
+ void* globalThis = m_codeBlock->globalObject()->globalThis();
- // slow cases for immediate int accesses to arrays
linkSlowCase(iter);
- linkSlowCase(iter); {
- JITStubCall stubCall(this, cti_op_put_by_val_array);
- stubCall.addArgument(regT0);
- stubCall.addArgument(regT1);
- stubCall.addArgument(currentInstruction[3].u.operand, regT2);
- stubCall.call();
- }
+ if (shouldEmitProfiling())
+ move(TrustedImm64((JSValue::encode(jsUndefined()))), regT0);
+ Jump isNotUndefined = branch64(NotEqual, regT1, TrustedImm64(JSValue::encode(jsUndefined())));
+ emitValueProfilingSite();
+ move(TrustedImm64(JSValue::encode(JSValue(static_cast<JSCell*>(globalThis)))), regT0);
+ emitPutVirtualRegister(currentInstruction[1].u.operand, regT0);
+ emitJumpSlowToHot(jump(), OPCODE_LENGTH(op_convert_this));
+
+ linkSlowCase(iter);
+ if (shouldEmitProfiling())
+ move(TrustedImm64(JSValue::encode(m_vm->stringStructure.get())), regT0);
+ isNotUndefined.link(this);
+ emitValueProfilingSite();
+ JITStubCall stubCall(this, cti_op_convert_this);
+ stubCall.addArgument(regT1);
+ stubCall.call(currentInstruction[1].u.operand);
}
-void JIT::emitSlow_op_loop_if_true(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+void JIT::emitSlow_op_to_primitive(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
linkSlowCase(iter);
- JITStubCall stubCall(this, cti_op_jtrue);
+
+ JITStubCall stubCall(this, cti_op_to_primitive);
stubCall.addArgument(regT0);
- stubCall.call();
- emitJumpSlowToHot(branchTest32(NonZero, regT0), currentInstruction[2].u.operand + 2);
+ stubCall.call(currentInstruction[1].u.operand);
}
void JIT::emitSlow_op_not(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
linkSlowCase(iter);
- xorPtr(Imm32(static_cast<int32_t>(JSImmediate::FullTagTypeBool)), regT0);
+ xor64(TrustedImm32(static_cast<int32_t>(ValueFalse)), regT0);
JITStubCall stubCall(this, cti_op_not);
stubCall.addArgument(regT0);
stubCall.call(currentInstruction[1].u.operand);
JITStubCall stubCall(this, cti_op_jtrue);
stubCall.addArgument(regT0);
stubCall.call();
- emitJumpSlowToHot(branchTest32(Zero, regT0), currentInstruction[2].u.operand + 2); // inverted!
-}
-
-void JIT::emitSlow_op_bitnot(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
-{
- linkSlowCase(iter);
- JITStubCall stubCall(this, cti_op_bitnot);
- stubCall.addArgument(regT0);
- stubCall.call(currentInstruction[1].u.operand);
+ emitJumpSlowToHot(branchTest32(Zero, regT0), currentInstruction[2].u.operand); // inverted!
}
void JIT::emitSlow_op_jtrue(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
JITStubCall stubCall(this, cti_op_jtrue);
stubCall.addArgument(regT0);
stubCall.call();
- emitJumpSlowToHot(branchTest32(NonZero, regT0), currentInstruction[2].u.operand + 2);
+ emitJumpSlowToHot(branchTest32(NonZero, regT0), currentInstruction[2].u.operand);
}
void JIT::emitSlow_op_bitxor(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
stubCall.addArgument(regT0);
stubCall.addArgument(regT1);
stubCall.call();
- xor32(Imm32(0x1), regT0);
+ xor32(TrustedImm32(0x1), regT0);
emitTagAsBoolImmediate(regT0);
emitPutVirtualRegister(currentInstruction[1].u.operand);
}
void JIT::emitSlow_op_stricteq(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
+ linkSlowCase(iter);
linkSlowCase(iter);
linkSlowCase(iter);
JITStubCall stubCall(this, cti_op_stricteq);
void JIT::emitSlow_op_nstricteq(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
+ linkSlowCase(iter);
linkSlowCase(iter);
linkSlowCase(iter);
JITStubCall stubCall(this, cti_op_nstricteq);
stubCall.call(currentInstruction[1].u.operand);
}
-void JIT::emitSlow_op_instanceof(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+void JIT::emitSlow_op_check_has_instance(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
+ unsigned dst = currentInstruction[1].u.operand;
+ unsigned value = currentInstruction[2].u.operand;
+ unsigned baseVal = currentInstruction[3].u.operand;
+
+ linkSlowCaseIfNotJSCell(iter, baseVal);
linkSlowCase(iter);
- linkSlowCase(iter);
- linkSlowCase(iter);
- linkSlowCase(iter);
+ JITStubCall stubCall(this, cti_op_check_has_instance);
+ stubCall.addArgument(value, regT2);
+ stubCall.addArgument(baseVal, regT2);
+ stubCall.call(dst);
+
+ emitJumpSlowToHot(jump(), currentInstruction[4].u.operand);
+}
+
+void JIT::emitSlow_op_instanceof(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+{
+ unsigned dst = currentInstruction[1].u.operand;
+ unsigned value = currentInstruction[2].u.operand;
+ unsigned proto = currentInstruction[3].u.operand;
+
+ linkSlowCaseIfNotJSCell(iter, value);
+ linkSlowCaseIfNotJSCell(iter, proto);
linkSlowCase(iter);
JITStubCall stubCall(this, cti_op_instanceof);
- stubCall.addArgument(currentInstruction[2].u.operand, regT2);
- stubCall.addArgument(currentInstruction[3].u.operand, regT2);
- stubCall.addArgument(currentInstruction[4].u.operand, regT2);
- stubCall.call(currentInstruction[1].u.operand);
+ stubCall.addArgument(value, regT2);
+ stubCall.addArgument(proto, regT2);
+ stubCall.call(dst);
}
void JIT::emitSlow_op_call(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
- compileOpCallSlowCase(currentInstruction, iter, m_callLinkInfoIndex++, op_call);
+ compileOpCallSlowCase(op_call, currentInstruction, iter, m_callLinkInfoIndex++);
}
void JIT::emitSlow_op_call_eval(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
- compileOpCallSlowCase(currentInstruction, iter, m_callLinkInfoIndex++, op_call_eval);
+ compileOpCallSlowCase(op_call_eval, currentInstruction, iter, m_callLinkInfoIndex);
}
-
+
void JIT::emitSlow_op_call_varargs(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
- compileOpCallVarargsSlowCase(currentInstruction, iter);
+ compileOpCallSlowCase(op_call_varargs, currentInstruction, iter, m_callLinkInfoIndex++);
}
void JIT::emitSlow_op_construct(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
- compileOpCallSlowCase(currentInstruction, iter, m_callLinkInfoIndex++, op_construct);
+ compileOpCallSlowCase(op_construct, currentInstruction, iter, m_callLinkInfoIndex++);
}
-void JIT::emitSlow_op_to_jsnumber(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+void JIT::emitSlow_op_to_number(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
- linkSlowCaseIfNotJSCell(iter, currentInstruction[2].u.operand);
linkSlowCase(iter);
- JITStubCall stubCall(this, cti_op_to_jsnumber);
+ JITStubCall stubCall(this, cti_op_to_number);
+ stubCall.addArgument(regT0);
+ stubCall.call(currentInstruction[1].u.operand);
+}
+
+void JIT::emit_op_get_arguments_length(Instruction* currentInstruction)
+{
+ int dst = currentInstruction[1].u.operand;
+ int argumentsRegister = currentInstruction[2].u.operand;
+ addSlowCase(branchTest64(NonZero, addressFor(argumentsRegister)));
+ emitGetFromCallFrameHeader32(JSStack::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(branchTest64(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(JSStack::ArgumentCount, regT2);
+ addSlowCase(branch32(AboveOrEqual, regT1, regT2));
+
+ neg32(regT1);
+ signExtend32ToPtr(regT1, regT1);
+ load64(BaseIndex(callFrameRegister, regT1, TimesEight, CallFrame::thisArgumentOffset() * static_cast<int>(sizeof(Register))), regT0);
+ emitValueProfilingSite();
+ 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);
+ JITStubCall(this, cti_op_create_arguments).call();
+ emitPutVirtualRegister(arguments);
+ emitPutVirtualRegister(unmodifiedArgumentsRegister(arguments));
+
+ skipArgumentsCreation.link(this);
+ JITStubCall stubCall(this, cti_op_get_by_val_generic);
+ stubCall.addArgument(arguments, regT2);
+ stubCall.addArgument(property, regT2);
+ stubCall.callWithValueProfiling(dst);
+}
+
+void JIT::emit_op_put_to_base(Instruction* currentInstruction)
+{
+ int base = currentInstruction[1].u.operand;
+ int id = currentInstruction[2].u.operand;
+ int value = currentInstruction[3].u.operand;
+
+ PutToBaseOperation* operation = currentInstruction[4].u.putToBaseOperation;
+ switch (operation->m_kind) {
+ case PutToBaseOperation::GlobalVariablePutChecked:
+ addSlowCase(branchTest8(NonZero, AbsoluteAddress(operation->m_predicatePointer)));
+ case PutToBaseOperation::GlobalVariablePut: {
+ JSGlobalObject* globalObject = m_codeBlock->globalObject();
+ if (operation->m_isDynamic) {
+ emitGetVirtualRegister(base, regT0);
+ addSlowCase(branchPtr(NotEqual, regT0, TrustedImmPtr(globalObject)));
+ }
+ emitGetVirtualRegister(value, regT0);
+ store64(regT0, operation->m_registerAddress);
+ if (Heap::isWriteBarrierEnabled())
+ emitWriteBarrier(globalObject, regT0, regT2, ShouldFilterImmediates, WriteBarrierForVariableAccess);
+ return;
+ }
+ case PutToBaseOperation::VariablePut: {
+ emitGetVirtualRegisters(base, regT0, value, regT1);
+ loadPtr(Address(regT0, JSVariableObject::offsetOfRegisters()), regT2);
+ store64(regT1, Address(regT2, operation->m_offset * sizeof(Register)));
+ if (Heap::isWriteBarrierEnabled())
+ emitWriteBarrier(regT0, regT1, regT2, regT3, ShouldFilterImmediates, WriteBarrierForVariableAccess);
+ return;
+ }
+
+ case PutToBaseOperation::GlobalPropertyPut: {
+ emitGetVirtualRegisters(base, regT0, value, regT1);
+ loadPtr(&operation->m_structure, regT2);
+ addSlowCase(branchPtr(NotEqual, Address(regT0, JSCell::structureOffset()), regT2));
+ ASSERT(!operation->m_structure || !operation->m_structure->inlineCapacity());
+ loadPtr(Address(regT0, JSObject::butterflyOffset()), regT2);
+ load32(&operation->m_offsetInButterfly, regT3);
+ signExtend32ToPtr(regT3, regT3);
+ store64(regT1, BaseIndex(regT2, regT3, TimesEight));
+ if (Heap::isWriteBarrierEnabled())
+ emitWriteBarrier(regT0, regT1, regT2, regT3, ShouldFilterImmediates, WriteBarrierForVariableAccess);
+ return;
+ }
+
+ case PutToBaseOperation::Uninitialised:
+ case PutToBaseOperation::Readonly:
+ case PutToBaseOperation::Generic:
+ JITStubCall stubCall(this, cti_op_put_to_base);
+
+ stubCall.addArgument(TrustedImm32(base));
+ stubCall.addArgument(TrustedImmPtr(&m_codeBlock->identifier(id)));
+ stubCall.addArgument(TrustedImm32(value));
+ stubCall.addArgument(TrustedImmPtr(operation));
+ stubCall.call();
+ return;
+ }
+}
+
+#endif // USE(JSVALUE64)
+
+void JIT::emit_op_loop_hint(Instruction*)
+{
+ // Emit the JIT optimization check:
+ if (canBeOptimized())
+ addSlowCase(branchAdd32(PositiveOrZero, TrustedImm32(Options::executionCounterIncrementForLoop()),
+ AbsoluteAddress(m_codeBlock->addressOfJITExecuteCounter())));
+
+ // Emit the watchdog timer check:
+ if (m_vm->watchdog.isEnabled())
+ addSlowCase(branchTest8(NonZero, AbsoluteAddress(m_vm->watchdog.timerDidFireAddress())));
+}
+
+void JIT::emitSlow_op_loop_hint(Instruction*, Vector<SlowCaseEntry>::iterator& iter)
+{
+#if ENABLE(DFG_JIT)
+ // Emit the slow path for the JIT optimization check:
+ if (canBeOptimized()) {
+ linkSlowCase(iter);
+
+ JITStubCall stubCall(this, cti_optimize);
+ stubCall.addArgument(TrustedImm32(m_bytecodeOffset));
+ stubCall.call();
+
+ emitJumpSlowToHot(jump(), OPCODE_LENGTH(op_loop_hint));
+ }
+#endif
+
+ // Emit the slow path of the watchdog timer check:
+ if (m_vm->watchdog.isEnabled()) {
+ linkSlowCase(iter);
+
+ JITStubCall stubCall(this, cti_handle_watchdog_timer);
+ stubCall.call();
+
+ emitJumpSlowToHot(jump(), OPCODE_LENGTH(op_loop_hint));
+ }
+
+}
+
+void JIT::emit_resolve_operations(ResolveOperations* resolveOperations, const int* baseVR, const int* valueVR)
+{
+
+#if USE(JSVALUE32_64)
+ unmap();
+#else
+ killLastResultRegister();
+#endif
+
+ if (resolveOperations->isEmpty()) {
+ addSlowCase(jump());
+ return;
+ }
+
+ const RegisterID value = regT0;
+#if USE(JSVALUE32_64)
+ const RegisterID valueTag = regT1;
+#endif
+ const RegisterID scope = regT2;
+ const RegisterID scratch = regT3;
+
+ JSGlobalObject* globalObject = m_codeBlock->globalObject();
+ ResolveOperation* pc = resolveOperations->data();
+ emitGetFromCallFrameHeaderPtr(JSStack::ScopeChain, scope);
+ bool setBase = false;
+ bool resolvingBase = true;
+ while (resolvingBase) {
+ switch (pc->m_operation) {
+ case ResolveOperation::ReturnGlobalObjectAsBase:
+ move(TrustedImmPtr(globalObject), value);
+#if USE(JSVALUE32_64)
+ move(TrustedImm32(JSValue::CellTag), valueTag);
+#endif
+ emitValueProfilingSite();
+ emitStoreCell(*baseVR, value);
+ return;
+ case ResolveOperation::SetBaseToGlobal:
+ RELEASE_ASSERT(baseVR);
+ setBase = true;
+ move(TrustedImmPtr(globalObject), scratch);
+ emitStoreCell(*baseVR, scratch);
+ resolvingBase = false;
+ ++pc;
+ break;
+ case ResolveOperation::SetBaseToUndefined: {
+ RELEASE_ASSERT(baseVR);
+ setBase = true;
+#if USE(JSVALUE64)
+ move(TrustedImm64(JSValue::encode(jsUndefined())), scratch);
+ emitPutVirtualRegister(*baseVR, scratch);
+#else
+ emitStore(*baseVR, jsUndefined());
+#endif
+ resolvingBase = false;
+ ++pc;
+ break;
+ }
+ case ResolveOperation::SetBaseToScope:
+ RELEASE_ASSERT(baseVR);
+ setBase = true;
+ emitStoreCell(*baseVR, scope);
+ resolvingBase = false;
+ ++pc;
+ break;
+ case ResolveOperation::ReturnScopeAsBase:
+ emitStoreCell(*baseVR, scope);
+ RELEASE_ASSERT(value == regT0);
+ move(scope, value);
+#if USE(JSVALUE32_64)
+ move(TrustedImm32(JSValue::CellTag), valueTag);
+#endif
+ emitValueProfilingSite();
+ return;
+ case ResolveOperation::SkipTopScopeNode: {
+#if USE(JSVALUE32_64)
+ Jump activationNotCreated = branch32(Equal, tagFor(m_codeBlock->activationRegister()), TrustedImm32(JSValue::EmptyValueTag));
+#else
+ Jump activationNotCreated = branchTest64(Zero, addressFor(m_codeBlock->activationRegister()));
+#endif
+ loadPtr(Address(scope, JSScope::offsetOfNext()), scope);
+ activationNotCreated.link(this);
+ ++pc;
+ break;
+ }
+ case ResolveOperation::CheckForDynamicEntriesBeforeGlobalScope: {
+ move(scope, regT3);
+ loadPtr(Address(regT3, JSScope::offsetOfNext()), regT1);
+ Jump atTopOfScope = branchTestPtr(Zero, regT1);
+ Label loopStart = label();
+ loadPtr(Address(regT3, JSCell::structureOffset()), regT2);
+ Jump isActivation = branchPtr(Equal, regT2, TrustedImmPtr(globalObject->activationStructure()));
+ addSlowCase(branchPtr(NotEqual, regT2, TrustedImmPtr(globalObject->nameScopeStructure())));
+ isActivation.link(this);
+ move(regT1, regT3);
+ loadPtr(Address(regT3, JSScope::offsetOfNext()), regT1);
+ branchTestPtr(NonZero, regT1, loopStart);
+ atTopOfScope.link(this);
+ ++pc;
+ break;
+ }
+ case ResolveOperation::SkipScopes: {
+ for (int i = 0; i < pc->m_scopesToSkip; i++)
+ loadPtr(Address(scope, JSScope::offsetOfNext()), scope);
+ ++pc;
+ break;
+ }
+ case ResolveOperation::Fail:
+ addSlowCase(jump());
+ return;
+ default:
+ resolvingBase = false;
+ }
+ }
+ if (baseVR && !setBase)
+ emitStoreCell(*baseVR, scope);
+
+ RELEASE_ASSERT(valueVR);
+ ResolveOperation* resolveValueOperation = pc;
+ switch (resolveValueOperation->m_operation) {
+ case ResolveOperation::GetAndReturnGlobalProperty: {
+ // Verify structure.
+ move(TrustedImmPtr(globalObject), regT2);
+ move(TrustedImmPtr(resolveValueOperation), regT3);
+ loadPtr(Address(regT3, OBJECT_OFFSETOF(ResolveOperation, m_structure)), regT1);
+ addSlowCase(branchPtr(NotEqual, regT1, Address(regT2, JSCell::structureOffset())));
+
+ // Load property.
+ load32(Address(regT3, OBJECT_OFFSETOF(ResolveOperation, m_offset)), regT3);
+
+ // regT2: GlobalObject
+ // regT3: offset
+#if USE(JSVALUE32_64)
+ compileGetDirectOffset(regT2, valueTag, value, regT3, KnownNotFinal);
+#else
+ compileGetDirectOffset(regT2, value, regT3, regT1, KnownNotFinal);
+#endif
+ break;
+ }
+ case ResolveOperation::GetAndReturnGlobalVarWatchable:
+ case ResolveOperation::GetAndReturnGlobalVar: {
+#if USE(JSVALUE32_64)
+ load32(reinterpret_cast<char*>(pc->m_registerAddress) + OBJECT_OFFSETOF(JSValue, u.asBits.tag), valueTag);
+ load32(reinterpret_cast<char*>(pc->m_registerAddress) + OBJECT_OFFSETOF(JSValue, u.asBits.payload), value);
+#else
+ load64(reinterpret_cast<char*>(pc->m_registerAddress), value);
+#endif
+ break;
+ }
+ case ResolveOperation::GetAndReturnScopedVar: {
+ loadPtr(Address(scope, JSVariableObject::offsetOfRegisters()), scope);
+#if USE(JSVALUE32_64)
+ load32(Address(scope, pc->m_offset * sizeof(Register) + OBJECT_OFFSETOF(JSValue, u.asBits.tag)), valueTag);
+ load32(Address(scope, pc->m_offset * sizeof(Register) + OBJECT_OFFSETOF(JSValue, u.asBits.payload)), value);
+#else
+ load64(Address(scope, pc->m_offset * sizeof(Register)), value);
+#endif
+ break;
+ }
+ default:
+ CRASH();
+ return;
+ }
+
+#if USE(JSVALUE32_64)
+ emitStore(*valueVR, valueTag, value);
+#else
+ emitPutVirtualRegister(*valueVR, value);
+#endif
+ emitValueProfilingSite();
+}
+
+void JIT::emitSlow_link_resolve_operations(ResolveOperations* resolveOperations, Vector<SlowCaseEntry>::iterator& iter)
+{
+ if (resolveOperations->isEmpty()) {
+ linkSlowCase(iter);
+ return;
+ }
+
+ ResolveOperation* pc = resolveOperations->data();
+ bool resolvingBase = true;
+ while (resolvingBase) {
+ switch (pc->m_operation) {
+ case ResolveOperation::ReturnGlobalObjectAsBase:
+ return;
+ case ResolveOperation::SetBaseToGlobal:
+ resolvingBase = false;
+ ++pc;
+ break;
+ case ResolveOperation::SetBaseToUndefined: {
+ resolvingBase = false;
+ ++pc;
+ break;
+ }
+ case ResolveOperation::SetBaseToScope:
+ resolvingBase = false;
+ ++pc;
+ break;
+ case ResolveOperation::ReturnScopeAsBase:
+ return;
+ case ResolveOperation::SkipTopScopeNode: {
+ ++pc;
+ break;
+ }
+ case ResolveOperation::SkipScopes:
+ ++pc;
+ break;
+ case ResolveOperation::Fail:
+ linkSlowCase(iter);
+ return;
+ case ResolveOperation::CheckForDynamicEntriesBeforeGlobalScope: {
+ linkSlowCase(iter);
+ ++pc;
+ break;
+ }
+ default:
+ resolvingBase = false;
+ }
+ }
+ ResolveOperation* resolveValueOperation = pc;
+ switch (resolveValueOperation->m_operation) {
+ case ResolveOperation::GetAndReturnGlobalProperty: {
+ linkSlowCase(iter);
+ break;
+ }
+ case ResolveOperation::GetAndReturnGlobalVarWatchable:
+ case ResolveOperation::GetAndReturnGlobalVar:
+ break;
+ case ResolveOperation::GetAndReturnScopedVar:
+ break;
+ default:
+ CRASH();
+ return;
+ }
+}
+
+void JIT::emit_op_resolve(Instruction* currentInstruction)
+{
+ ResolveOperations* operations = currentInstruction[3].u.resolveOperations;
+ int dst = currentInstruction[1].u.operand;
+ emit_resolve_operations(operations, 0, &dst);
+}
+
+void JIT::emitSlow_op_resolve(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+{
+ ResolveOperations* operations = currentInstruction[3].u.resolveOperations;
+ emitSlow_link_resolve_operations(operations, iter);
+ JITStubCall stubCall(this, cti_op_resolve);
+ stubCall.addArgument(TrustedImmPtr(&m_codeBlock->identifier(currentInstruction[2].u.operand)));
+ stubCall.addArgument(TrustedImmPtr(currentInstruction[3].u.resolveOperations));
+ stubCall.callWithValueProfiling(currentInstruction[1].u.operand);
+}
+
+void JIT::emit_op_resolve_base(Instruction* currentInstruction)
+{
+ ResolveOperations* operations = currentInstruction[4].u.resolveOperations;
+ int dst = currentInstruction[1].u.operand;
+ emit_resolve_operations(operations, &dst, 0);
+}
+
+void JIT::emitSlow_op_resolve_base(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+{
+ ResolveOperations* operations = currentInstruction[4].u.resolveOperations;
+ emitSlow_link_resolve_operations(operations, iter);
+ 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.addArgument(TrustedImmPtr(currentInstruction[4].u.resolveOperations));
+ stubCall.addArgument(TrustedImmPtr(currentInstruction[5].u.putToBaseOperation));
+ stubCall.callWithValueProfiling(currentInstruction[1].u.operand);
+}
+
+void JIT::emit_op_resolve_with_base(Instruction* currentInstruction)
+{
+ ResolveOperations* operations = currentInstruction[4].u.resolveOperations;
+ int base = currentInstruction[1].u.operand;
+ int value = currentInstruction[2].u.operand;
+ emit_resolve_operations(operations, &base, &value);
+}
+
+void JIT::emitSlow_op_resolve_with_base(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+{
+ ResolveOperations* operations = currentInstruction[4].u.resolveOperations;
+ emitSlow_link_resolve_operations(operations, iter);
+ JITStubCall stubCall(this, cti_op_resolve_with_base);
+ stubCall.addArgument(TrustedImmPtr(&m_codeBlock->identifier(currentInstruction[3].u.operand)));
+ stubCall.addArgument(TrustedImm32(currentInstruction[1].u.operand));
+ stubCall.addArgument(TrustedImmPtr(currentInstruction[4].u.resolveOperations));
+ stubCall.addArgument(TrustedImmPtr(currentInstruction[5].u.putToBaseOperation));
+ stubCall.callWithValueProfiling(currentInstruction[2].u.operand);
+}
+
+void JIT::emit_op_resolve_with_this(Instruction* currentInstruction)
+{
+ ResolveOperations* operations = currentInstruction[4].u.resolveOperations;
+ int base = currentInstruction[1].u.operand;
+ int value = currentInstruction[2].u.operand;
+ emit_resolve_operations(operations, &base, &value);
+}
+
+void JIT::emitSlow_op_resolve_with_this(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+{
+ ResolveOperations* operations = currentInstruction[4].u.resolveOperations;
+ emitSlow_link_resolve_operations(operations, iter);
+ JITStubCall stubCall(this, cti_op_resolve_with_this);
+ stubCall.addArgument(TrustedImmPtr(&m_codeBlock->identifier(currentInstruction[3].u.operand)));
+ stubCall.addArgument(TrustedImm32(currentInstruction[1].u.operand));
+ stubCall.addArgument(TrustedImmPtr(currentInstruction[4].u.resolveOperations));
+ stubCall.callWithValueProfiling(currentInstruction[2].u.operand);
+}
+
+void JIT::emitSlow_op_put_to_base(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+{
+ int base = currentInstruction[1].u.operand;
+ int id = currentInstruction[2].u.operand;
+ int value = currentInstruction[3].u.operand;
+
+ PutToBaseOperation* putToBaseOperation = currentInstruction[4].u.putToBaseOperation;
+ switch (putToBaseOperation->m_kind) {
+ case PutToBaseOperation::VariablePut:
+ return;
+
+ case PutToBaseOperation::GlobalVariablePutChecked:
+ linkSlowCase(iter);
+ case PutToBaseOperation::GlobalVariablePut:
+ if (!putToBaseOperation->m_isDynamic)
+ return;
+ linkSlowCase(iter);
+ break;
+
+ case PutToBaseOperation::Uninitialised:
+ case PutToBaseOperation::Readonly:
+ case PutToBaseOperation::Generic:
+ return;
+
+ case PutToBaseOperation::GlobalPropertyPut:
+ linkSlowCase(iter);
+ break;
+
+ }
+
+ JITStubCall stubCall(this, cti_op_put_to_base);
+
+ stubCall.addArgument(TrustedImm32(base));
+ stubCall.addArgument(TrustedImmPtr(&m_codeBlock->identifier(id)));
+ stubCall.addArgument(TrustedImm32(value));
+ stubCall.addArgument(TrustedImmPtr(putToBaseOperation));
+ stubCall.call();
+}
+
+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_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 = branchTest64(NonZero, addressFor(dst));
+#endif
+ }
+
+ JITStubCall stubCall(this, cti_op_new_func);
+ stubCall.addArgument(TrustedImmPtr(m_codeBlock->functionDecl(currentInstruction[2].u.operand)));
+ stubCall.call(dst);
+
+ if (currentInstruction[3].u.operand) {
+#if USE(JSVALUE32_64)
+ unmap();
+#else
+ killLastResultRegister();
+#endif
+ lazyJump.link(this);
+ }
+}
+
+void JIT::emit_op_new_func_exp(Instruction* currentInstruction)
+{
+ JITStubCall stubCall(this, cti_op_new_func_exp);
+ stubCall.addArgument(TrustedImmPtr(m_codeBlock->functionExpr(currentInstruction[2].u.operand)));
+ stubCall.call(currentInstruction[1].u.operand);
+}
+
+void JIT::emit_op_new_array(Instruction* currentInstruction)
+{
+ JITStubCall stubCall(this, cti_op_new_array);
+ stubCall.addArgument(TrustedImm32(currentInstruction[2].u.operand));
+ stubCall.addArgument(TrustedImm32(currentInstruction[3].u.operand));
+ stubCall.addArgument(TrustedImmPtr(currentInstruction[4].u.arrayAllocationProfile));
+ stubCall.call(currentInstruction[1].u.operand);
+}
+
+void JIT::emit_op_new_array_with_size(Instruction* currentInstruction)
+{
+ JITStubCall stubCall(this, cti_op_new_array_with_size);
+#if USE(JSVALUE64)
+ stubCall.addArgument(currentInstruction[2].u.operand, regT2);
+#else
+ stubCall.addArgument(currentInstruction[2].u.operand);
+#endif
+ stubCall.addArgument(TrustedImmPtr(currentInstruction[3].u.arrayAllocationProfile));
stubCall.call(currentInstruction[1].u.operand);
}
-#endif // USE(JSVALUE32_64)
+void JIT::emit_op_new_array_buffer(Instruction* currentInstruction)
+{
+ JITStubCall stubCall(this, cti_op_new_array_buffer);
+ stubCall.addArgument(TrustedImm32(currentInstruction[2].u.operand));
+ stubCall.addArgument(TrustedImm32(currentInstruction[3].u.operand));
+ stubCall.addArgument(TrustedImmPtr(currentInstruction[4].u.arrayAllocationProfile));
+ stubCall.call(currentInstruction[1].u.operand);
+}
} // namespace JSC
projects / apple / javascriptcore.git / blobdiff