/*
- * 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
#include "JIT.h"
#include "Arguments.h"
-#include "CopiedSpaceInlineMethods.h"
+#include "CopiedSpaceInlines.h"
#include "Heap.h"
-#include "JITInlineMethods.h"
+#include "JITInlines.h"
#include "JITStubCall.h"
#include "JSArray.h"
#include "JSCell.h"
#if USE(JSVALUE64)
-PassRefPtr<ExecutableMemoryHandle> JIT::privateCompileCTIMachineTrampolines(JSGlobalData* globalData, TrampolineStructure *trampolines)
+JIT::CodeRef JIT::privateCompileCTINativeCall(VM* vm, NativeFunction)
{
- // (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, JSCell::classInfoOffset()), TrustedImmPtr(&JSString::s_info));
-
- // Checks out okay! - get the length from the Ustring.
- load32(Address(regT0, OBJECT_OFFSETOF(JSString, m_length)), regT0);
-
- Jump string_failureCases3 = branch32(LessThan, regT0, TrustedImm32(0));
-
- // regT0 contains a 64 bit value (is positive, is zero extended) so we don't need sign extend here.
- emitFastArithIntToImmNoCheck(regT0, regT0);
-
- ret();
-
- // (3) Trampolines for the slow cases of op_call / op_call_eval / op_construct.
- COMPILE_ASSERT(sizeof(CodeType) == 4, CodeTypeEnumMustBe32Bit);
-
- JumpList callSlowCase;
- JumpList constructSlowCase;
-
- // VirtualCallLink Trampoline
- // regT0 holds callee; callFrame is moved and partially initialized.
- Label virtualCallLinkBegin = align();
- callSlowCase.append(emitJumpIfNotJSCell(regT0));
- callSlowCase.append(emitJumpIfNotType(regT0, regT1, JSFunctionType));
-
- // Finish canonical initialization before JS function call.
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_scopeChain)), regT1);
- emitPutCellToCallFrameHeader(regT1, RegisterFile::ScopeChain);
-
- // Also initialize ReturnPC for use by lazy linking and exceptions.
- preserveReturnAddressAfterCall(regT3);
- emitPutToCallFrameHeader(regT3, RegisterFile::ReturnPC);
-
- storePtr(callFrameRegister, &m_globalData->topCallFrame);
- restoreArgumentReference();
- Call callLazyLinkCall = call();
- restoreReturnAddressBeforeReturn(regT3);
- jump(regT0);
-
- // VirtualConstructLink Trampoline
- // regT0 holds callee; callFrame is moved and partially initialized.
- Label virtualConstructLinkBegin = align();
- constructSlowCase.append(emitJumpIfNotJSCell(regT0));
- constructSlowCase.append(emitJumpIfNotType(regT0, regT1, JSFunctionType));
-
- // Finish canonical initialization before JS function call.
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_scopeChain)), regT1);
- emitPutCellToCallFrameHeader(regT1, RegisterFile::ScopeChain);
-
- // Also initialize ReturnPC for use by lazy linking and exeptions.
- preserveReturnAddressAfterCall(regT3);
- emitPutToCallFrameHeader(regT3, RegisterFile::ReturnPC);
-
- storePtr(callFrameRegister, &m_globalData->topCallFrame);
- restoreArgumentReference();
- Call callLazyLinkConstruct = call();
- restoreReturnAddressBeforeReturn(regT3);
- jump(regT0);
-
- // VirtualCall Trampoline
- // regT0 holds callee; regT2 will hold the FunctionExecutable.
- Label virtualCallBegin = align();
- callSlowCase.append(emitJumpIfNotJSCell(regT0));
- callSlowCase.append(emitJumpIfNotType(regT0, regT1, JSFunctionType));
-
- // Finish canonical initialization before JS function call.
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_scopeChain)), regT1);
- emitPutCellToCallFrameHeader(regT1, RegisterFile::ScopeChain);
-
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_executable)), regT2);
- Jump hasCodeBlock1 = branch32(GreaterThanOrEqual, Address(regT2, OBJECT_OFFSETOF(FunctionExecutable, m_numParametersForCall)), TrustedImm32(0));
- preserveReturnAddressAfterCall(regT3);
- storePtr(callFrameRegister, &m_globalData->topCallFrame);
- restoreArgumentReference();
- Call callCompileCall = call();
- restoreReturnAddressBeforeReturn(regT3);
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_executable)), regT2);
-
- hasCodeBlock1.link(this);
- loadPtr(Address(regT2, OBJECT_OFFSETOF(FunctionExecutable, m_jitCodeForCallWithArityCheck)), regT0);
- jump(regT0);
-
- // VirtualConstruct Trampoline
- // regT0 holds callee; regT2 will hold the FunctionExecutable.
- Label virtualConstructBegin = align();
- constructSlowCase.append(emitJumpIfNotJSCell(regT0));
- constructSlowCase.append(emitJumpIfNotType(regT0, regT1, JSFunctionType));
-
- // Finish canonical initialization before JS function call.
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_scopeChain)), regT1);
- emitPutCellToCallFrameHeader(regT1, RegisterFile::ScopeChain);
-
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_executable)), regT2);
- Jump hasCodeBlock2 = branch32(GreaterThanOrEqual, Address(regT2, OBJECT_OFFSETOF(FunctionExecutable, m_numParametersForConstruct)), TrustedImm32(0));
- preserveReturnAddressAfterCall(regT3);
- storePtr(callFrameRegister, &m_globalData->topCallFrame);
- restoreArgumentReference();
- Call callCompileConstruct = call();
- restoreReturnAddressBeforeReturn(regT3);
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_executable)), regT2);
-
- hasCodeBlock2.link(this);
- loadPtr(Address(regT2, OBJECT_OFFSETOF(FunctionExecutable, m_jitCodeForConstructWithArityCheck)), regT0);
- jump(regT0);
-
- callSlowCase.link(this);
- // Finish canonical initialization before JS function call.
- emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, regT2);
- emitGetFromCallFrameHeaderPtr(RegisterFile::ScopeChain, regT2, regT2);
- emitPutCellToCallFrameHeader(regT2, RegisterFile::ScopeChain);
-
- // Also initialize ReturnPC and CodeBlock, like a JS function would.
- preserveReturnAddressAfterCall(regT3);
- emitPutToCallFrameHeader(regT3, RegisterFile::ReturnPC);
- emitPutImmediateToCallFrameHeader(0, RegisterFile::CodeBlock);
-
- storePtr(callFrameRegister, &m_globalData->topCallFrame);
- restoreArgumentReference();
- Call callCallNotJSFunction = call();
- emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, callFrameRegister);
- restoreReturnAddressBeforeReturn(regT3);
- ret();
-
- constructSlowCase.link(this);
- // Finish canonical initialization before JS function call.
- emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, regT2);
- emitGetFromCallFrameHeaderPtr(RegisterFile::ScopeChain, regT2, regT2);
- emitPutCellToCallFrameHeader(regT2, RegisterFile::ScopeChain);
-
- // Also initialize ReturnPC and CodeBlock, like a JS function would.
- preserveReturnAddressAfterCall(regT3);
- emitPutToCallFrameHeader(regT3, RegisterFile::ReturnPC);
- emitPutImmediateToCallFrameHeader(0, RegisterFile::CodeBlock);
-
- storePtr(callFrameRegister, &m_globalData->topCallFrame);
- restoreArgumentReference();
- Call callConstructNotJSFunction = call();
- emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, callFrameRegister);
- restoreReturnAddressBeforeReturn(regT3);
- ret();
-
- // NativeCall Trampoline
- Label nativeCallThunk = privateCompileCTINativeCall(globalData);
- Label nativeConstructThunk = privateCompileCTINativeCall(globalData, true);
-
- Call string_failureCases1Call = makeTailRecursiveCall(string_failureCases1);
- Call string_failureCases2Call = makeTailRecursiveCall(string_failureCases2);
- Call string_failureCases3Call = makeTailRecursiveCall(string_failureCases3);
-
- // All trampolines constructed! copy the code, link up calls, and set the pointers on the Machine object.
- LinkBuffer patchBuffer(*m_globalData, this, GLOBAL_THUNK_ID);
-
- 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));
- patchBuffer.link(callLazyLinkCall, FunctionPtr(cti_vm_lazyLinkCall));
- patchBuffer.link(callLazyLinkConstruct, FunctionPtr(cti_vm_lazyLinkConstruct));
- patchBuffer.link(callCompileCall, FunctionPtr(cti_op_call_jitCompile));
- patchBuffer.link(callCompileConstruct, FunctionPtr(cti_op_construct_jitCompile));
- patchBuffer.link(callCallNotJSFunction, FunctionPtr(cti_op_call_NotJSFunction));
- patchBuffer.link(callConstructNotJSFunction, FunctionPtr(cti_op_construct_NotJSConstruct));
-
- CodeRef finalCode = patchBuffer.finalizeCode();
- RefPtr<ExecutableMemoryHandle> executableMemory = finalCode.executableMemory();
-
- trampolines->ctiVirtualCallLink = patchBuffer.trampolineAt(virtualCallLinkBegin);
- trampolines->ctiVirtualConstructLink = patchBuffer.trampolineAt(virtualConstructLinkBegin);
- trampolines->ctiVirtualCall = patchBuffer.trampolineAt(virtualCallBegin);
- trampolines->ctiVirtualConstruct = patchBuffer.trampolineAt(virtualConstructBegin);
- trampolines->ctiNativeCall = patchBuffer.trampolineAt(nativeCallThunk);
- trampolines->ctiNativeConstruct = patchBuffer.trampolineAt(nativeConstructThunk);
- trampolines->ctiStringLengthTrampoline = patchBuffer.trampolineAt(stringLengthBegin);
-
- return executableMemory.release();
-}
-
-JIT::Label JIT::privateCompileCTINativeCall(JSGlobalData* globalData, bool isConstruct)
-{
- int executableOffsetToFunction = isConstruct ? OBJECT_OFFSETOF(NativeExecutable, m_constructor) : OBJECT_OFFSETOF(NativeExecutable, m_function);
-
- Label nativeCallThunk = align();
-
- emitPutImmediateToCallFrameHeader(0, RegisterFile::CodeBlock);
- storePtr(callFrameRegister, &m_globalData->topCallFrame);
-
-#if CPU(X86_64)
- // Load caller frame's scope chain into this callframe so that whatever we call can
- // get to its global data.
- emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, regT0);
- emitGetFromCallFrameHeaderPtr(RegisterFile::ScopeChain, regT1, regT0);
- emitPutCellToCallFrameHeader(regT1, RegisterFile::ScopeChain);
-
- peek(regT1);
- emitPutToCallFrameHeader(regT1, RegisterFile::ReturnPC);
-
- // Calling convention: f(edi, esi, edx, ecx, ...);
- // Host function signature: f(ExecState*);
- move(callFrameRegister, X86Registers::edi);
-
- subPtr(TrustedImm32(16 - sizeof(void*)), stackPointerRegister); // Align stack after call.
-
- emitGetFromCallFrameHeaderPtr(RegisterFile::Callee, X86Registers::esi);
- loadPtr(Address(X86Registers::esi, OBJECT_OFFSETOF(JSFunction, m_executable)), X86Registers::r9);
- move(regT0, callFrameRegister); // Eagerly restore caller frame register to avoid loading from stack.
- call(Address(X86Registers::r9, executableOffsetToFunction));
-
- addPtr(TrustedImm32(16 - sizeof(void*)), stackPointerRegister);
-
-#elif CPU(ARM)
- // Load caller frame's scope chain into this callframe so that whatever we call can
- // get to its global data.
- emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, regT2);
- emitGetFromCallFrameHeaderPtr(RegisterFile::ScopeChain, regT1, regT2);
- emitPutCellToCallFrameHeader(regT1, RegisterFile::ScopeChain);
-
- preserveReturnAddressAfterCall(regT3); // Callee preserved
- emitPutToCallFrameHeader(regT3, RegisterFile::ReturnPC);
-
- // Calling convention: f(r0 == regT0, r1 == regT1, ...);
- // Host function signature: f(ExecState*);
- move(callFrameRegister, ARMRegisters::r0);
-
- emitGetFromCallFrameHeaderPtr(RegisterFile::Callee, ARMRegisters::r1);
- move(regT2, callFrameRegister); // Eagerly restore caller frame register to avoid loading from stack.
- loadPtr(Address(ARMRegisters::r1, OBJECT_OFFSETOF(JSFunction, m_executable)), regT2);
- call(Address(regT2, executableOffsetToFunction));
-
- restoreReturnAddressBeforeReturn(regT3);
-
-#elif CPU(MIPS)
- // Load caller frame's scope chain into this callframe so that whatever we call can
- // get to its global data.
- emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, regT0);
- emitGetFromCallFrameHeaderPtr(RegisterFile::ScopeChain, regT1, regT0);
- emitPutCellToCallFrameHeader(regT1, RegisterFile::ScopeChain);
-
- preserveReturnAddressAfterCall(regT3); // Callee preserved
- emitPutToCallFrameHeader(regT3, RegisterFile::ReturnPC);
-
- // Calling convention: f(a0, a1, a2, a3);
- // Host function signature: f(ExecState*);
-
- // Allocate stack space for 16 bytes (8-byte aligned)
- // 16 bytes (unused) for 4 arguments
- subPtr(TrustedImm32(16), stackPointerRegister);
-
- // Setup arg0
- move(callFrameRegister, MIPSRegisters::a0);
-
- // Call
- emitGetFromCallFrameHeaderPtr(RegisterFile::Callee, MIPSRegisters::a2);
- loadPtr(Address(MIPSRegisters::a2, OBJECT_OFFSETOF(JSFunction, m_executable)), regT2);
- move(regT0, callFrameRegister); // Eagerly restore caller frame register to avoid loading from stack.
- call(Address(regT2, executableOffsetToFunction));
-
- // Restore stack space
- addPtr(TrustedImm32(16), stackPointerRegister);
-
- restoreReturnAddressBeforeReturn(regT3);
-
-#else
-#error "JIT not supported on this platform."
- UNUSED_PARAM(executableOffsetToFunction);
- breakpoint();
-#endif
-
- // Check for an exception
- loadPtr(&(globalData->exception), regT2);
- Jump exceptionHandler = branchTestPtr(NonZero, regT2);
-
- // Return.
- ret();
-
- // Handle an exception
- exceptionHandler.link(this);
-
- // Grab the return address.
- preserveReturnAddressAfterCall(regT1);
-
- move(TrustedImmPtr(&globalData->exceptionLocation), regT2);
- storePtr(regT1, regT2);
- poke(callFrameRegister, OBJECT_OFFSETOF(struct JITStackFrame, callFrame) / sizeof(void*));
-
- storePtr(callFrameRegister, &m_globalData->topCallFrame);
- // Set the return address.
- move(TrustedImmPtr(FunctionPtr(ctiVMThrowTrampoline).value()), regT1);
- restoreReturnAddressBeforeReturn(regT1);
-
- ret();
-
- return nativeCallThunk;
-}
-
-JIT::CodeRef JIT::privateCompileCTINativeCall(JSGlobalData* globalData, NativeFunction)
-{
- return CodeRef::createSelfManagedCodeRef(globalData->jitStubs->ctiNativeCall());
+ return vm->getCTIStub(nativeCallGenerator);
}
void JIT::emit_op_mov(Instruction* currentInstruction)
int dst = currentInstruction[1].u.operand;
int src = currentInstruction[2].u.operand;
- if (canBeOptimized()) {
+ 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);
} else {
if (m_codeBlock->isConstantRegisterIndex(src)) {
if (!getConstantOperand(src).isNumber())
- storePtr(TrustedImmPtr(JSValue::encode(getConstantOperand(src))), Address(callFrameRegister, dst * sizeof(Register)));
+ store64(TrustedImm64(JSValue::encode(getConstantOperand(src))), Address(callFrameRegister, dst * sizeof(Register)));
else
- storePtr(ImmPtr(JSValue::encode(getConstantOperand(src))), Address(callFrameRegister, dst * sizeof(Register)));
+ store64(Imm64(JSValue::encode(getConstantOperand(src))), Address(callFrameRegister, dst * sizeof(Register)));
if (dst == m_lastResultBytecodeRegister)
killLastResultRegister();
} else if ((src == m_lastResultBytecodeRegister) || (dst == m_lastResultBytecodeRegister)) {
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)));
+ load64(Address(callFrameRegister, src * sizeof(Register)), regT1);
+ store64(regT1, Address(callFrameRegister, dst * sizeof(Register)));
}
}
}
void JIT::emit_op_end(Instruction* currentInstruction)
{
- ASSERT(returnValueRegister != callFrameRegister);
+ RELEASE_ASSERT(returnValueRegister != callFrameRegister);
emitGetVirtualRegister(currentInstruction[1].u.operand, returnValueRegister);
- restoreReturnAddressBeforeReturn(Address(callFrameRegister, RegisterFile::ReturnPC * static_cast<int>(sizeof(Register))));
+ restoreReturnAddressBeforeReturn(Address(callFrameRegister, JSStack::ReturnPC * static_cast<int>(sizeof(Register))));
ret();
}
void JIT::emit_op_new_object(Instruction* currentInstruction)
{
- emitAllocateJSFinalObject(TrustedImmPtr(m_codeBlock->globalObject()->emptyObjectStructure()), regT0, regT1);
-
+ Structure* structure = currentInstruction[3].u.objectAllocationProfile->structure();
+ size_t allocationSize = JSObject::allocationSize(structure->inlineCapacity());
+ MarkedAllocator* allocator = &m_vm->heap.allocatorForObjectWithoutDestructor(allocationSize);
+
+ RegisterID resultReg = regT0;
+ RegisterID allocatorReg = regT1;
+ RegisterID scratchReg = regT2;
+
+ move(TrustedImmPtr(allocator), allocatorReg);
+ emitAllocateJSObject(allocatorReg, TrustedImmPtr(structure), resultReg, scratchReg);
emitPutVirtualRegister(currentInstruction[1].u.operand);
}
void JIT::emitSlow_op_new_object(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
linkSlowCase(iter);
- JITStubCall(this, cti_op_new_object).call(currentInstruction[1].u.operand);
+ JITStubCall stubCall(this, cti_op_new_object);
+ stubCall.addArgument(TrustedImmPtr(currentInstruction[3].u.objectAllocationProfile->structure()));
+ stubCall.call(currentInstruction[1].u.operand);
}
void JIT::emit_op_check_has_instance(Instruction* currentInstruction)
{
- unsigned baseVal = currentInstruction[1].u.operand;
+ unsigned baseVal = currentInstruction[3].u.operand;
emitGetVirtualRegister(baseVal, regT0);
// Check that baseVal 'ImplementsHasInstance'.
loadPtr(Address(regT0, JSCell::structureOffset()), regT0);
- addSlowCase(branchTest8(Zero, Address(regT0, Structure::typeInfoFlagsOffset()), TrustedImm32(ImplementsHasInstance)));
+ 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.
emitGetVirtualRegister(value, regT2);
- emitGetVirtualRegister(baseVal, regT0);
emitGetVirtualRegister(proto, regT1);
// Check that proto are cells. baseVal must be a cell - this is checked by op_check_has_instance.
loadPtr(Address(regT1, JSCell::structureOffset()), regT3);
addSlowCase(emitJumpIfNotObject(regT3));
- // Fixme: this check is only needed because the JSC API allows HasInstance to be overridden; we should deprecate this.
- // Check that baseVal 'ImplementsDefaultHasInstance'.
- loadPtr(Address(regT0, JSCell::structureOffset()), regT0);
- addSlowCase(branchTest8(Zero, Address(regT0, Structure::typeInfoFlagsOffset()), TrustedImm32(ImplementsDefaultHasInstance)));
-
// Optimistically load the result true, and start looping.
// Initially, regT1 still contains proto and regT2 still contains value.
// As we loop regT2 will be updated with its prototype, recursively walking the prototype chain.
- move(TrustedImmPtr(JSValue::encode(jsBoolean(true))), 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, JSCell::structureOffset()), regT2);
- loadPtr(Address(regT2, Structure::prototypeOffset()), regT2);
+ load64(Address(regT2, Structure::prototypeOffset()), regT2);
Jump isInstance = branchPtr(Equal, regT2, regT1);
emitJumpIfJSCell(regT2).linkTo(loop, this);
// We get here either by dropping out of the loop, or if value was not an Object. Result is false.
- move(TrustedImmPtr(JSValue::encode(jsBoolean(false))), 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);
emitGetVirtualRegister(value, regT0);
Jump isCell = emitJumpIfJSCell(regT0);
- comparePtr(Equal, regT0, TrustedImm32(ValueUndefined), regT0);
+ compare64(Equal, regT0, TrustedImm32(ValueUndefined), regT0);
Jump done = jump();
isCell.link(this);
loadPtr(Address(regT0, JSCell::structureOffset()), regT1);
- test8(NonZero, Address(regT1, Structure::typeInfoFlagsOffset()), TrustedImm32(MasqueradesAsUndefined), regT0);
-
+ 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);
unsigned value = currentInstruction[2].u.operand;
emitGetVirtualRegister(value, regT0);
- xorPtr(TrustedImm32(static_cast<int32_t>(ValueFalse)), regT0);
- testPtr(Zero, regT0, TrustedImm32(static_cast<int32_t>(~1)), regT0);
+ xor64(TrustedImm32(static_cast<int32_t>(ValueFalse)), regT0);
+ test64(Zero, regT0, TrustedImm32(static_cast<int32_t>(~1)), regT0);
emitTagAsBoolImmediate(regT0);
emitPutVirtualRegister(dst);
}
unsigned value = currentInstruction[2].u.operand;
emitGetVirtualRegister(value, regT0);
- testPtr(NonZero, regT0, tagTypeNumberRegister, regT0);
+ test64(NonZero, regT0, tagTypeNumberRegister, regT0);
emitTagAsBoolImmediate(regT0);
emitPutVirtualRegister(dst);
}
void JIT::emit_op_tear_off_activation(Instruction* currentInstruction)
{
- unsigned activation = currentInstruction[1].u.operand;
- unsigned arguments = currentInstruction[2].u.operand;
- Jump activationCreated = branchTestPtr(NonZero, addressFor(activation));
- Jump argumentsNotCreated = branchTestPtr(Zero, addressFor(arguments));
- activationCreated.link(this);
+ int activation = currentInstruction[1].u.operand;
+ Jump activationNotCreated = branchTest64(Zero, addressFor(activation));
JITStubCall stubCall(this, cti_op_tear_off_activation);
stubCall.addArgument(activation, regT2);
- stubCall.addArgument(unmodifiedArgumentsRegister(arguments), regT2);
stubCall.call();
- argumentsNotCreated.link(this);
+ activationNotCreated.link(this);
}
void JIT::emit_op_tear_off_arguments(Instruction* currentInstruction)
{
- unsigned dst = currentInstruction[1].u.operand;
+ int arguments = currentInstruction[1].u.operand;
+ int activation = currentInstruction[2].u.operand;
- Jump argsNotCreated = branchTestPtr(Zero, Address(callFrameRegister, sizeof(Register) * (unmodifiedArgumentsRegister(dst))));
+ Jump argsNotCreated = branchTest64(Zero, Address(callFrameRegister, sizeof(Register) * (unmodifiedArgumentsRegister(arguments))));
JITStubCall stubCall(this, cti_op_tear_off_arguments);
- stubCall.addArgument(unmodifiedArgumentsRegister(dst), regT2);
+ stubCall.addArgument(unmodifiedArgumentsRegister(arguments), regT2);
+ stubCall.addArgument(activation, regT2);
stubCall.call();
argsNotCreated.link(this);
}
void JIT::emit_op_ret(Instruction* currentInstruction)
{
- emitOptimizationCheck(RetOptimizationCheck);
-
ASSERT(callFrameRegister != regT1);
ASSERT(regT1 != returnValueRegister);
ASSERT(returnValueRegister != callFrameRegister);
emitGetVirtualRegister(currentInstruction[1].u.operand, returnValueRegister);
// Grab the return address.
- emitGetFromCallFrameHeaderPtr(RegisterFile::ReturnPC, regT1);
+ emitGetFromCallFrameHeaderPtr(JSStack::ReturnPC, regT1);
// Restore our caller's "r".
- emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, callFrameRegister);
+ emitGetFromCallFrameHeaderPtr(JSStack::CallerFrame, callFrameRegister);
// Return.
restoreReturnAddressBeforeReturn(regT1);
void JIT::emit_op_ret_object_or_this(Instruction* currentInstruction)
{
- emitOptimizationCheck(RetOptimizationCheck);
-
ASSERT(callFrameRegister != regT1);
ASSERT(regT1 != returnValueRegister);
ASSERT(returnValueRegister != callFrameRegister);
Jump notObject = emitJumpIfNotObject(regT2);
// Grab the return address.
- emitGetFromCallFrameHeaderPtr(RegisterFile::ReturnPC, regT1);
+ emitGetFromCallFrameHeaderPtr(JSStack::ReturnPC, regT1);
// Restore our caller's "r".
- emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, callFrameRegister);
+ emitGetFromCallFrameHeaderPtr(JSStack::CallerFrame, callFrameRegister);
// Return.
restoreReturnAddressBeforeReturn(regT1);
emitGetVirtualRegister(currentInstruction[2].u.operand, returnValueRegister);
// Grab the return address.
- emitGetFromCallFrameHeaderPtr(RegisterFile::ReturnPC, regT1);
+ emitGetFromCallFrameHeaderPtr(JSStack::ReturnPC, regT1);
// Restore our caller's "r".
- emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, callFrameRegister);
+ emitGetFromCallFrameHeaderPtr(JSStack::CallerFrame, callFrameRegister);
// Return.
restoreReturnAddressBeforeReturn(regT1);
ret();
}
-void JIT::emit_op_resolve(Instruction* currentInstruction)
-{
- JITStubCall stubCall(this, cti_op_resolve);
- stubCall.addArgument(TrustedImmPtr(&m_codeBlock->identifier(currentInstruction[2].u.operand)));
- stubCall.callWithValueProfiling(currentInstruction[1].u.operand);
-}
-
void JIT::emit_op_to_primitive(Instruction* currentInstruction)
{
int dst = currentInstruction[1].u.operand;
emitGetVirtualRegister(src, regT0);
Jump isImm = emitJumpIfNotJSCell(regT0);
- addSlowCase(branchPtr(NotEqual, Address(regT0, JSCell::classInfoOffset()), TrustedImmPtr(&JSString::s_info)));
+ addSlowCase(branchPtr(NotEqual, Address(regT0, JSCell::structureOffset()), TrustedImmPtr(m_vm->stringStructure.get())));
isImm.link(this);
if (dst != src)
stubCall.call(currentInstruction[1].u.operand);
}
-void JIT::emit_op_resolve_base(Instruction* currentInstruction)
-{
- 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.callWithValueProfiling(currentInstruction[1].u.operand);
-}
-
-void JIT::emit_op_ensure_property_exists(Instruction* currentInstruction)
-{
- JITStubCall stubCall(this, cti_op_ensure_property_exists);
- stubCall.addArgument(TrustedImm32(currentInstruction[1].u.operand));
- stubCall.addArgument(TrustedImmPtr(&m_codeBlock->identifier(currentInstruction[2].u.operand)));
- stubCall.call(currentInstruction[1].u.operand);
-}
-
-void JIT::emit_op_resolve_skip(Instruction* currentInstruction)
-{
- JITStubCall stubCall(this, cti_op_resolve_skip);
- stubCall.addArgument(TrustedImmPtr(&m_codeBlock->identifier(currentInstruction[2].u.operand)));
- stubCall.addArgument(TrustedImm32(currentInstruction[3].u.operand));
- stubCall.callWithValueProfiling(currentInstruction[1].u.operand);
-}
-
-void JIT::emit_op_resolve_global(Instruction* currentInstruction, bool)
-{
- // Fast case
- void* globalObject = m_codeBlock->globalObject();
- unsigned currentIndex = m_globalResolveInfoIndex++;
- GlobalResolveInfo* resolveInfoAddress = &(m_codeBlock->globalResolveInfo(currentIndex));
-
- // Check Structure of global object
- move(TrustedImmPtr(globalObject), regT0);
- move(TrustedImmPtr(resolveInfoAddress), regT2);
- loadPtr(Address(regT2, OBJECT_OFFSETOF(GlobalResolveInfo, structure)), regT1);
- addSlowCase(branchPtr(NotEqual, regT1, Address(regT0, JSCell::structureOffset()))); // Structures don't match
-
- // Load cached property
- // Assume that the global object always uses external storage.
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSGlobalObject, m_propertyStorage)), regT0);
- load32(Address(regT2, OBJECT_OFFSETOF(GlobalResolveInfo, offset)), regT1);
- loadPtr(BaseIndex(regT0, regT1, ScalePtr), regT0);
- emitValueProfilingSite();
- emitPutVirtualRegister(currentInstruction[1].u.operand);
-}
-
-void JIT::emitSlow_op_resolve_global(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
-{
- unsigned dst = currentInstruction[1].u.operand;
- Identifier* ident = &m_codeBlock->identifier(currentInstruction[2].u.operand);
-
- unsigned currentIndex = m_globalResolveInfoIndex++;
-
- linkSlowCase(iter);
- JITStubCall stubCall(this, cti_op_resolve_global);
- stubCall.addArgument(TrustedImmPtr(ident));
- stubCall.addArgument(TrustedImm32(currentIndex));
- stubCall.addArgument(regT0);
- stubCall.callWithValueProfiling(dst);
-}
-
void JIT::emit_op_not(Instruction* currentInstruction)
{
emitGetVirtualRegister(currentInstruction[2].u.operand, regT0);
// Invert against JSValue(false); if the value was tagged as a boolean, then all bits will be
// clear other than the low bit (which will be 0 or 1 for false or true inputs respectively).
// Then invert against JSValue(true), which will add the tag back in, and flip the low bit.
- xorPtr(TrustedImm32(static_cast<int32_t>(ValueFalse)), regT0);
+ xor64(TrustedImm32(static_cast<int32_t>(ValueFalse)), regT0);
addSlowCase(branchTestPtr(NonZero, regT0, TrustedImm32(static_cast<int32_t>(~1))));
- xorPtr(TrustedImm32(static_cast<int32_t>(ValueTrue)), regT0);
+ xor64(TrustedImm32(static_cast<int32_t>(ValueTrue)), regT0);
emitPutVirtualRegister(currentInstruction[1].u.operand);
}
unsigned target = currentInstruction[2].u.operand;
emitGetVirtualRegister(currentInstruction[1].u.operand, regT0);
- addJump(branchPtr(Equal, regT0, TrustedImmPtr(JSValue::encode(jsNumber(0)))), target);
+ addJump(branch64(Equal, regT0, TrustedImm64(JSValue::encode(jsNumber(0)))), target);
Jump isNonZero = emitJumpIfImmediateInteger(regT0);
- addJump(branchPtr(Equal, regT0, TrustedImmPtr(JSValue::encode(jsBoolean(false)))), target);
- addSlowCase(branchPtr(NotEqual, regT0, TrustedImmPtr(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);
}
// First, handle JSCell cases - check MasqueradesAsUndefined bit on the structure.
loadPtr(Address(regT0, JSCell::structureOffset()), regT2);
- addJump(branchTest8(NonZero, Address(regT2, Structure::typeInfoFlagsOffset()), TrustedImm32(MasqueradesAsUndefined)), target);
- Jump wasNotImmediate = jump();
+ 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(TrustedImm32(~TagBitUndefined), regT0);
- addJump(branchPtr(Equal, regT0, TrustedImmPtr(JSValue::encode(jsNull()))), target);
+ and64(TrustedImm32(~TagBitUndefined), regT0);
+ addJump(branch64(Equal, regT0, TrustedImm64(JSValue::encode(jsNull()))), target);
- wasNotImmediate.link(this);
+ isNotMasqueradesAsUndefined.link(this);
+ masqueradesGlobalObjectIsForeign.link(this);
};
void JIT::emit_op_jneq_null(Instruction* currentInstruction)
{
// First, handle JSCell cases - check MasqueradesAsUndefined bit on the structure.
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(TrustedImm32(~TagBitUndefined), regT0);
- addJump(branchPtr(NotEqual, regT0, TrustedImmPtr(JSValue::encode(jsNull()))), target);
+ and64(TrustedImm32(~TagBitUndefined), regT0);
+ addJump(branch64(NotEqual, regT0, TrustedImm64(JSValue::encode(jsNull()))), target);
wasNotImmediate.link(this);
}
void JIT::emit_op_jneq_ptr(Instruction* currentInstruction)
{
unsigned src = currentInstruction[1].u.operand;
- JSCell* ptr = currentInstruction[2].u.jsCell.get();
+ Special::Pointer ptr = currentInstruction[2].u.specialPointer;
unsigned target = currentInstruction[3].u.operand;
emitGetVirtualRegister(src, regT0);
- addJump(branchPtr(NotEqual, regT0, TrustedImmPtr(JSValue::encode(JSValue(ptr)))), target);
+ addJump(branchPtr(NotEqual, regT0, TrustedImmPtr(actualPointerFor(m_codeBlock, ptr))), target);
}
void JIT::emit_op_eq(Instruction* currentInstruction)
emitPutVirtualRegister(currentInstruction[1].u.operand);
}
-void JIT::emit_op_resolve_with_base(Instruction* currentInstruction)
-{
- 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.callWithValueProfiling(currentInstruction[2].u.operand);
-}
-
-void JIT::emit_op_resolve_with_this(Instruction* currentInstruction)
-{
- 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.callWithValueProfiling(currentInstruction[2].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, TrustedImmPtr(JSValue::encode(jsNumber(0))));
+ Jump isZero = branch64(Equal, regT0, TrustedImm64(JSValue::encode(jsNumber(0))));
addJump(emitJumpIfImmediateInteger(regT0), target);
- addJump(branchPtr(Equal, regT0, TrustedImmPtr(JSValue::encode(jsBoolean(true)))), target);
- addSlowCase(branchPtr(NotEqual, regT0, TrustedImmPtr(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);
}
{
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);
}
{
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);
}
getPnamesStubCall.addArgument(regT0);
getPnamesStubCall.call(dst);
load32(Address(regT0, OBJECT_OFFSETOF(JSPropertyNameIterator, m_jsStringsSize)), regT3);
- storePtr(tagTypeNumberRegister, payloadFor(i));
+ store64(tagTypeNumberRegister, addressFor(i));
store32(TrustedImm32(Int32Tag), intTagFor(size));
store32(regT3, intPayloadFor(size));
Jump end = jump();
loadPtr(addressFor(it), regT1);
loadPtr(Address(regT1, OBJECT_OFFSETOF(JSPropertyNameIterator, m_jsStrings)), regT2);
- loadPtr(BaseIndex(regT2, regT0, TimesEight), regT2);
+ load64(BaseIndex(regT2, regT0, TimesEight), regT2);
emitPutVirtualRegister(dst, regT2);
addJump(branchTestPtr(Zero, Address(regT3)), target);
Label checkPrototype(this);
- loadPtr(Address(regT2, Structure::prototypeOffset()), regT2);
+ load64(Address(regT2, Structure::prototypeOffset()), regT2);
callHasProperty.append(emitJumpIfNotJSCell(regT2));
loadPtr(Address(regT2, JSCell::structureOffset()), regT2);
callHasProperty.append(branchPtr(NotEqual, regT2, Address(regT3)));
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*)
// Jump slow if both are cells (to cover strings).
move(regT0, regT2);
- orPtr(regT1, regT2);
+ or64(regT1, regT2);
addSlowCase(emitJumpIfJSCell(regT2));
// Jump slow if either is a double. First test if it's an integer, which is fine, and then test
rightOK.link(this);
if (type == OpStrictEq)
- comparePtr(Equal, regT1, regT0, regT0);
+ compare64(Equal, regT1, regT0, regT0);
else
- comparePtr(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, JSCell::structureOffset()), regT2);
- addSlowCase(branch8(NotEqual, Address(regT2, Structure::typeInfoTypeOffset()), TrustedImm32(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(TrustedImmPtr(&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.
move(regT0, callFrameRegister);
- peek(regT3, OBJECT_OFFSETOF(struct JITStackFrame, globalData) / sizeof(void*));
- loadPtr(Address(regT3, OBJECT_OFFSETOF(JSGlobalData, exception)), regT0);
- storePtr(TrustedImmPtr(JSValue::encode(JSValue())), Address(regT3, OBJECT_OFFSETOF(JSGlobalData, exception)));
+ 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(TrustedImm32(currentInstruction[1].u.operand));
- stubCall.call();
- addJump(jump(), currentInstruction[2].u.operand);
-}
-
void JIT::emit_op_switch_imm(Instruction* currentInstruction)
{
unsigned tableIndex = currentInstruction[1].u.operand;
jump(regT0);
}
-void JIT::emit_op_throw_reference_error(Instruction* currentInstruction)
+void JIT::emit_op_throw_static_error(Instruction* currentInstruction)
{
- JITStubCall stubCall(this, cti_op_throw_reference_error);
+ JITStubCall stubCall(this, cti_op_throw_static_error);
if (!m_codeBlock->getConstant(currentInstruction[1].u.operand).isNumber())
- stubCall.addArgument(TrustedImmPtr(JSValue::encode(m_codeBlock->getConstant(currentInstruction[1].u.operand))));
+ stubCall.addArgument(TrustedImm64(JSValue::encode(m_codeBlock->getConstant(currentInstruction[1].u.operand))));
else
- stubCall.addArgument(ImmPtr(JSValue::encode(m_codeBlock->getConstant(currentInstruction[1].u.operand))));
+ stubCall.addArgument(Imm64(JSValue::encode(m_codeBlock->getConstant(currentInstruction[1].u.operand))));
+ stubCall.addArgument(TrustedImm32(currentInstruction[2].u.operand));
stubCall.call();
}
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
}
Jump isImmediate = emitJumpIfNotJSCell(regT0);
loadPtr(Address(regT0, JSCell::structureOffset()), regT2);
- test8(NonZero, Address(regT2, Structure::typeInfoFlagsOffset()), TrustedImm32(MasqueradesAsUndefined), regT0);
-
+ 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(TrustedImm32(~TagBitUndefined), regT0);
- comparePtr(Equal, regT0, TrustedImm32(ValueNull), regT0);
+ and64(TrustedImm32(~TagBitUndefined), regT0);
+ compare64(Equal, regT0, TrustedImm32(ValueNull), regT0);
wasNotImmediate.link(this);
+ wasNotMasqueradesAsUndefined.link(this);
emitTagAsBoolImmediate(regT0);
emitPutVirtualRegister(dst);
Jump isImmediate = emitJumpIfNotJSCell(regT0);
loadPtr(Address(regT0, JSCell::structureOffset()), regT2);
- test8(Zero, Address(regT2, Structure::typeInfoFlagsOffset()), TrustedImm32(MasqueradesAsUndefined), regT0);
-
+ 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(TrustedImm32(~TagBitUndefined), regT0);
- comparePtr(NotEqual, regT0, TrustedImm32(ValueNull), 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_create_activation(Instruction* currentInstruction)
{
unsigned dst = currentInstruction[1].u.operand;
- Jump activationCreated = branchTestPtr(NonZero, Address(callFrameRegister, sizeof(Register) * dst));
+ 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);
{
unsigned dst = currentInstruction[1].u.operand;
- Jump argsCreated = branchTestPtr(NonZero, Address(callFrameRegister, sizeof(Register) * dst));
+ Jump argsCreated = branchTest64(NonZero, Address(callFrameRegister, sizeof(Register) * dst));
JITStubCall(this, cti_op_create_arguments).call();
emitPutVirtualRegister(dst);
emitPutVirtualRegister(unmodifiedArgumentsRegister(dst));
{
unsigned dst = currentInstruction[1].u.operand;
- storePtr(TrustedImmPtr(0), Address(callFrameRegister, sizeof(Register) * dst));
+ store64(TrustedImm64((int64_t)0), Address(callFrameRegister, sizeof(Register) * dst));
}
void JIT::emit_op_convert_this(Instruction* currentInstruction)
{
- emitGetVirtualRegister(currentInstruction[1].u.operand, regT0);
+ emitGetVirtualRegister(currentInstruction[1].u.operand, regT1);
- emitJumpSlowCaseIfNotJSCell(regT0);
- addSlowCase(branchPtr(Equal, Address(regT0, JSCell::classInfoOffset()), TrustedImmPtr(&JSString::s_info)));
+ 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_get_callee(Instruction* currentInstruction)
{
unsigned result = currentInstruction[1].u.operand;
- emitGetFromCallFrameHeaderPtr(RegisterFile::Callee, regT0);
+ emitGetFromCallFrameHeaderPtr(JSStack::Callee, regT0);
+ emitValueProfilingSite();
emitPutVirtualRegister(result);
}
void JIT::emit_op_create_this(Instruction* currentInstruction)
{
- emitGetVirtualRegister(currentInstruction[2].u.operand, regT2);
- emitJumpSlowCaseIfNotJSCell(regT2, currentInstruction[2].u.operand);
- loadPtr(Address(regT2, JSCell::structureOffset()), regT1);
- addSlowCase(emitJumpIfNotObject(regT1));
-
- // now we know that the prototype is an object, but we don't know if it's got an
- // inheritor ID
-
- loadPtr(Address(regT2, JSObject::offsetOfInheritorID()), regT2);
- addSlowCase(branchTestPtr(Zero, regT2));
-
- // now regT2 contains the inheritorID, which is the structure that the newly
- // allocated object will have.
-
- emitAllocateJSFinalObject(regT2, regT0, regT1);
-
+ int callee = currentInstruction[2].u.operand;
+ RegisterID calleeReg = regT0;
+ RegisterID resultReg = regT0;
+ RegisterID allocatorReg = regT1;
+ RegisterID structureReg = regT2;
+ RegisterID scratchReg = regT3;
+
+ 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_create_this(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
- linkSlowCaseIfNotJSCell(iter, currentInstruction[2].u.operand); // not a cell
- linkSlowCase(iter); // not an object
- linkSlowCase(iter); // doesn't have an inheritor ID
+ linkSlowCase(iter); // doesn't have an allocation profile
linkSlowCase(iter); // allocation failed
+
JITStubCall stubCall(this, cti_op_create_this);
- stubCall.addArgument(currentInstruction[2].u.operand, regT1);
+ stubCall.addArgument(TrustedImm32(currentInstruction[3].u.operand));
stubCall.call(currentInstruction[1].u.operand);
}
void JIT::emit_op_profile_will_call(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);
-
}
void JIT::emit_op_profile_did_call(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);
}
void JIT::emitSlow_op_convert_this(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
- void* globalThis = m_codeBlock->globalObject()->globalScopeChain()->globalThis.get();
+ void* globalThis = m_codeBlock->globalObject()->globalThis();
linkSlowCase(iter);
- Jump isNotUndefined = branchPtr(NotEqual, regT0, TrustedImmPtr(JSValue::encode(jsUndefined())));
- move(TrustedImmPtr(globalThis), regT0);
+ 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));
- isNotUndefined.link(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(regT0);
+ stubCall.addArgument(regT1);
stubCall.call(currentInstruction[1].u.operand);
}
void JIT::emitSlow_op_not(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
linkSlowCase(iter);
- xorPtr(TrustedImm32(static_cast<int32_t>(ValueFalse)), regT0);
+ xor64(TrustedImm32(static_cast<int32_t>(ValueFalse)), regT0);
JITStubCall stubCall(this, cti_op_not);
stubCall.addArgument(regT0);
stubCall.call(currentInstruction[1].u.operand);
void JIT::emitSlow_op_check_has_instance(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
- unsigned baseVal = currentInstruction[1].u.operand;
+ unsigned dst = currentInstruction[1].u.operand;
+ unsigned value = currentInstruction[2].u.operand;
+ unsigned baseVal = currentInstruction[3].u.operand;
linkSlowCaseIfNotJSCell(iter, baseVal);
linkSlowCase(iter);
JITStubCall stubCall(this, cti_op_check_has_instance);
+ stubCall.addArgument(value, regT2);
stubCall.addArgument(baseVal, regT2);
- stubCall.call();
+ 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 baseVal = currentInstruction[3].u.operand;
- unsigned proto = currentInstruction[4].u.operand;
+ unsigned proto = currentInstruction[3].u.operand;
linkSlowCaseIfNotJSCell(iter, value);
linkSlowCaseIfNotJSCell(iter, proto);
linkSlowCase(iter);
- linkSlowCase(iter);
JITStubCall stubCall(this, cti_op_instanceof);
stubCall.addArgument(value, regT2);
- stubCall.addArgument(baseVal, regT2);
stubCall.addArgument(proto, regT2);
stubCall.call(dst);
}
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);
}
{
int dst = currentInstruction[1].u.operand;
int argumentsRegister = currentInstruction[2].u.operand;
- addSlowCase(branchTestPtr(NonZero, addressFor(argumentsRegister)));
- emitGetFromCallFrameHeader32(RegisterFile::ArgumentCount, regT0);
+ addSlowCase(branchTest64(NonZero, addressFor(argumentsRegister)));
+ emitGetFromCallFrameHeader32(JSStack::ArgumentCount, regT0);
sub32(TrustedImm32(1), regT0);
emitFastArithReTagImmediate(regT0, regT0);
emitPutVirtualRegister(dst, regT0);
int dst = currentInstruction[1].u.operand;
int argumentsRegister = currentInstruction[2].u.operand;
int property = currentInstruction[3].u.operand;
- addSlowCase(branchTestPtr(NonZero, addressFor(argumentsRegister)));
+ 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(RegisterFile::ArgumentCount, regT2);
+ emitGetFromCallFrameHeader32(JSStack::ArgumentCount, regT2);
addSlowCase(branch32(AboveOrEqual, regT1, regT2));
neg32(regT1);
signExtend32ToPtr(regT1, regT1);
- loadPtr(BaseIndex(callFrameRegister, regT1, TimesEight, CallFrame::thisArgumentOffset() * static_cast<int>(sizeof(Register))), regT0);
+ load64(BaseIndex(callFrameRegister, regT1, TimesEight, CallFrame::thisArgumentOffset() * static_cast<int>(sizeof(Register))), regT0);
+ emitValueProfilingSite();
emitPutVirtualRegister(dst, regT0);
}
emitPutVirtualRegister(unmodifiedArgumentsRegister(arguments));
skipArgumentsCreation.link(this);
- JITStubCall stubCall(this, cti_op_get_by_val);
+ JITStubCall stubCall(this, cti_op_get_by_val_generic);
stubCall.addArgument(arguments, regT2);
stubCall.addArgument(property, regT2);
- stubCall.call(dst);
+ 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_resolve_global_dynamic(Instruction* currentInstruction)
+void JIT::emit_op_loop_hint(Instruction*)
{
- int skip = currentInstruction[5].u.operand;
-
- emitGetFromCallFrameHeaderPtr(RegisterFile::ScopeChain, regT0);
-
- bool checkTopLevel = m_codeBlock->codeType() == FunctionCode && m_codeBlock->needsFullScopeChain();
- ASSERT(skip || !checkTopLevel);
- if (checkTopLevel && skip--) {
- Jump activationNotCreated;
- if (checkTopLevel)
- activationNotCreated = branchTestPtr(Zero, addressFor(m_codeBlock->activationRegister()));
- loadPtr(Address(regT0, OBJECT_OFFSETOF(ScopeChainNode, object)), regT1);
- addSlowCase(checkStructure(regT1, m_globalData->activationStructure.get()));
- loadPtr(Address(regT0, OBJECT_OFFSETOF(ScopeChainNode, next)), regT0);
- activationNotCreated.link(this);
+ // 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));
}
- while (skip--) {
- loadPtr(Address(regT0, OBJECT_OFFSETOF(ScopeChainNode, object)), regT1);
- addSlowCase(checkStructure(regT1, m_globalData->activationStructure.get()));
- loadPtr(Address(regT0, OBJECT_OFFSETOF(ScopeChainNode, next)), regT0);
+#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));
}
- emit_op_resolve_global(currentInstruction, true);
+
}
-void JIT::emitSlow_op_resolve_global_dynamic(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+void JIT::emit_resolve_operations(ResolveOperations* resolveOperations, const int* baseVR, const int* valueVR)
{
- unsigned dst = currentInstruction[1].u.operand;
- Identifier* ident = &m_codeBlock->identifier(currentInstruction[2].u.operand);
- int skip = currentInstruction[5].u.operand;
- while (skip--)
+
+#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);
- JITStubCall resolveStubCall(this, cti_op_resolve);
- resolveStubCall.addArgument(TrustedImmPtr(ident));
- resolveStubCall.call(dst);
- emitJumpSlowToHot(jump(), OPCODE_LENGTH(op_resolve_global_dynamic));
-
- unsigned currentIndex = m_globalResolveInfoIndex++;
-
- linkSlowCase(iter); // We managed to skip all the nodes in the scope chain, but the cache missed.
- JITStubCall stubCall(this, cti_op_resolve_global);
- stubCall.addArgument(TrustedImmPtr(ident));
- stubCall.addArgument(TrustedImm32(currentIndex));
- stubCall.addArgument(regT0);
- stubCall.callWithValueProfiling(dst);
+ 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)
#if USE(JSVALUE32_64)
lazyJump = branch32(NotEqual, tagFor(dst), TrustedImm32(JSValue::EmptyValueTag));
#else
- lazyJump = branchTestPtr(NonZero, addressFor(dst));
+ lazyJump = branchTest64(NonZero, addressFor(dst));
#endif
}
- FunctionExecutable* executable = m_codeBlock->functionDecl(currentInstruction[2].u.operand);
- emitGetFromCallFrameHeaderPtr(RegisterFile::ScopeChain, regT2);
- emitAllocateJSFunction(executable, regT2, regT0, regT1);
-
- emitStoreCell(dst, regT0);
+ 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)
}
}
-void JIT::emitSlow_op_new_func(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
-{
- linkSlowCase(iter);
- JITStubCall stubCall(this, cti_op_new_func);
- stubCall.addArgument(TrustedImmPtr(m_codeBlock->functionDecl(currentInstruction[2].u.operand)));
- stubCall.call(currentInstruction[1].u.operand);
-}
-
void JIT::emit_op_new_func_exp(Instruction* currentInstruction)
{
- FunctionExecutable* executable = m_codeBlock->functionExpr(currentInstruction[2].u.operand);
-
- // We only inline the allocation of a anonymous function expressions
- // If we want to be able to allocate a named function expression, we would
- // need to be able to do inline allocation of a JSStaticScopeObject.
- if (executable->name().isNull()) {
- emitGetFromCallFrameHeaderPtr(RegisterFile::ScopeChain, regT2);
- emitAllocateJSFunction(executable, regT2, regT0, regT1);
- emitStoreCell(currentInstruction[1].u.operand, regT0);
- return;
- }
-
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::emitSlow_op_new_func_exp(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
-{
- FunctionExecutable* executable = m_codeBlock->functionExpr(currentInstruction[2].u.operand);
- if (!executable->name().isNull())
- return;
- linkSlowCase(iter);
- JITStubCall stubCall(this, cti_op_new_func_exp);
- stubCall.addArgument(TrustedImmPtr(executable));
- stubCall.call(currentInstruction[1].u.operand);
-}
-
void JIT::emit_op_new_array(Instruction* currentInstruction)
{
- int length = currentInstruction[3].u.operand;
- if (CopiedSpace::isOversize(JSArray::storageSize(length))) {
- JITStubCall stubCall(this, cti_op_new_array);
- stubCall.addArgument(TrustedImm32(currentInstruction[2].u.operand));
- stubCall.addArgument(TrustedImm32(currentInstruction[3].u.operand));
- stubCall.call(currentInstruction[1].u.operand);
- return;
- }
- int dst = currentInstruction[1].u.operand;
- int values = currentInstruction[2].u.operand;
-
- emitAllocateJSArray(values, length, regT0, regT1, regT2);
- emitStoreCell(dst, regT0);
-}
-
-void JIT::emitSlow_op_new_array(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
-{
- // If the allocation would be oversize, we will already make the proper stub call above in
- // emit_op_new_array.
- int length = currentInstruction[3].u.operand;
- if (CopiedSpace::isOversize(JSArray::storageSize(length)))
- return;
- linkSlowCase(iter); // Not enough space in CopiedSpace for storage.
- linkSlowCase(iter); // Not enough space in MarkedSpace for cell.
-
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);
}
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);
}
projects / apple / javascriptcore.git / blobdiff