/*
- * 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
#if USE(JSVALUE32_64)
#include "JIT.h"
-#include "JITInlineMethods.h"
+#include "JITInlines.h"
#include "JITStubCall.h"
#include "JSArray.h"
#include "JSCell.h"
#include "JSFunction.h"
#include "JSPropertyNameIterator.h"
+#include "JSVariableObject.h"
#include "LinkBuffer.h"
namespace JSC {
-PassRefPtr<ExecutableMemoryHandle> JIT::privateCompileCTIMachineTrampolines(JSGlobalData* globalData, TrampolineStructure *trampolines)
-{
- // (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, TrustedImm32(JSValue::CellTag));
- 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)), regT2);
-
- Jump string_failureCases3 = branch32(Above, regT2, TrustedImm32(INT_MAX));
- move(regT2, regT0);
- move(TrustedImm32(JSValue::Int32Tag), regT1);
-
- ret();
-
- JumpList callSlowCase;
- JumpList constructSlowCase;
-
- // VirtualCallLink Trampoline
- // regT1, regT0 holds callee; callFrame is moved and partially initialized.
- Label virtualCallLinkBegin = align();
- callSlowCase.append(branch32(NotEqual, regT1, TrustedImm32(JSValue::CellTag)));
- 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
- // regT1, regT0 holds callee; callFrame is moved and partially initialized.
- Label virtualConstructLinkBegin = align();
- constructSlowCase.append(branch32(NotEqual, regT1, TrustedImm32(JSValue::CellTag)));
- 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
- // regT1, regT0 holds callee; regT2 will hold the FunctionExecutable.
- Label virtualCallBegin = align();
- callSlowCase.append(branch32(NotEqual, regT1, TrustedImm32(JSValue::CellTag)));
- 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
- // regT1, regT0 holds callee; regT2 will hold the FunctionExecutable.
- Label virtualConstructBegin = align();
- constructSlowCase.append(branch32(NotEqual, regT1, TrustedImm32(JSValue::CellTag)));
- 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)
- // 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(ecx, edx, ...);
- // Host function signature: f(ExecState*);
- move(callFrameRegister, X86Registers::ecx);
-
- subPtr(TrustedImm32(16 - sizeof(void*)), stackPointerRegister); // Align stack after call.
-
- // call the function
- emitGetFromCallFrameHeaderPtr(RegisterFile::Callee, regT1);
- loadPtr(Address(regT1, OBJECT_OFFSETOF(JSFunction, m_executable)), regT1);
- move(regT0, callFrameRegister); // Eagerly restore caller frame register to avoid loading from stack.
- call(Address(regT1, 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);
-
- // call the function
- 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(SH4)
- // 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 == regT4, r1 == regT5, ...);
- // Host function signature: f(ExecState*);
- move(callFrameRegister, regT4);
-
- emitGetFromCallFrameHeaderPtr(RegisterFile::Callee, regT5);
- move(regT2, callFrameRegister); // Eagerly restore caller frame register to avoid loading from stack.
- loadPtr(Address(regT5, OBJECT_OFFSETOF(JSFunction, m_executable)), regT2);
-
- call(Address(regT2, executableOffsetToFunction), regT0);
- 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 // CPU(X86)
-
- // Check for an exception
- Jump sawException = branch32(NotEqual, AbsoluteAddress(reinterpret_cast<char*>(&globalData->exception) + OBJECT_OFFSETOF(JSValue, u.asBits.tag)), TrustedImm32(JSValue::EmptyValueTag));
-
- // Return.
- ret();
-
- // Handle an exception
- sawException.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 func)
+JIT::CodeRef JIT::privateCompileCTINativeCall(VM* vm, NativeFunction func)
{
Call nativeCall;
- emitPutImmediateToCallFrameHeader(0, RegisterFile::CodeBlock);
- storePtr(callFrameRegister, &m_globalData->topCallFrame);
+ emitPutImmediateToCallFrameHeader(0, JSStack::CodeBlock);
+ storePtr(callFrameRegister, &m_vm->topCallFrame);
#if CPU(X86)
// 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);
+ emitGetFromCallFrameHeaderPtr(JSStack::CallerFrame, regT0);
+ emitGetFromCallFrameHeaderPtr(JSStack::ScopeChain, regT1, regT0);
+ emitPutCellToCallFrameHeader(regT1, JSStack::ScopeChain);
peek(regT1);
- emitPutToCallFrameHeader(regT1, RegisterFile::ReturnPC);
+ emitPutToCallFrameHeader(regT1, JSStack::ReturnPC);
// Calling convention: f(ecx, edx, ...);
// Host function signature: f(ExecState*);
#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);
+ emitGetFromCallFrameHeaderPtr(JSStack::CallerFrame, regT2);
+ emitGetFromCallFrameHeaderPtr(JSStack::ScopeChain, regT1, regT2);
+ emitPutCellToCallFrameHeader(regT1, JSStack::ScopeChain);
preserveReturnAddressAfterCall(regT3); // Callee preserved
- emitPutToCallFrameHeader(regT3, RegisterFile::ReturnPC);
+ emitPutToCallFrameHeader(regT3, JSStack::ReturnPC);
// Calling convention: f(r0 == regT0, r1 == regT1, ...);
// Host function signature: f(ExecState*);
move(callFrameRegister, ARMRegisters::r0);
- emitGetFromCallFrameHeaderPtr(RegisterFile::Callee, ARMRegisters::r1);
+ emitGetFromCallFrameHeaderPtr(JSStack::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);
#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);
+ emitGetFromCallFrameHeaderPtr(JSStack::CallerFrame, regT0);
+ emitGetFromCallFrameHeaderPtr(JSStack::ScopeChain, regT1, regT0);
+ emitPutCellToCallFrameHeader(regT1, JSStack::ScopeChain);
preserveReturnAddressAfterCall(regT3); // Callee preserved
- emitPutToCallFrameHeader(regT3, RegisterFile::ReturnPC);
+ emitPutToCallFrameHeader(regT3, JSStack::ReturnPC);
// Calling convention: f(a0, a1, a2, a3);
// Host function signature: f(ExecState*);
move(callFrameRegister, MIPSRegisters::a0);
// Call
- emitGetFromCallFrameHeaderPtr(RegisterFile::Callee, MIPSRegisters::a2);
+ emitGetFromCallFrameHeaderPtr(JSStack::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.
#elif CPU(SH4)
// 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);
+ emitGetFromCallFrameHeaderPtr(JSStack::CallerFrame, regT2);
+ emitGetFromCallFrameHeaderPtr(JSStack::ScopeChain, regT1, regT2);
+ emitPutCellToCallFrameHeader(regT1, JSStack::ScopeChain);
preserveReturnAddressAfterCall(regT3); // Callee preserved
- emitPutToCallFrameHeader(regT3, RegisterFile::ReturnPC);
+ emitPutToCallFrameHeader(regT3, JSStack::ReturnPC);
// Calling convention: f(r0 == regT4, r1 == regT5, ...);
// Host function signature: f(ExecState*);
move(callFrameRegister, regT4);
- emitGetFromCallFrameHeaderPtr(RegisterFile::Callee, regT5);
+ emitGetFromCallFrameHeaderPtr(JSStack::Callee, regT5);
move(regT2, callFrameRegister); // Eagerly restore caller frame register to avoid loading from stack.
loadPtr(Address(regT5, OBJECT_OFFSETOF(JSFunction, m_executable)), regT2);
#endif // CPU(X86)
// Check for an exception
- Jump sawException = branch32(NotEqual, AbsoluteAddress(reinterpret_cast<char*>(&globalData->exception) + OBJECT_OFFSETOF(JSValue, u.asBits.tag)), TrustedImm32(JSValue::EmptyValueTag));
+ Jump sawException = branch32(NotEqual, AbsoluteAddress(reinterpret_cast<char*>(&vm->exception) + OBJECT_OFFSETOF(JSValue, u.asBits.tag)), TrustedImm32(JSValue::EmptyValueTag));
// Return.
ret();
// Grab the return address.
preserveReturnAddressAfterCall(regT1);
- move(TrustedImmPtr(&globalData->exceptionLocation), regT2);
+ move(TrustedImmPtr(&vm->exceptionLocation), regT2);
storePtr(regT1, regT2);
poke(callFrameRegister, OBJECT_OFFSETOF(struct JITStackFrame, callFrame) / sizeof(void*));
- storePtr(callFrameRegister, &m_globalData->topCallFrame);
+ storePtr(callFrameRegister, &m_vm->topCallFrame);
// Set the return address.
move(TrustedImmPtr(FunctionPtr(ctiVMThrowTrampoline).value()), regT1);
restoreReturnAddressBeforeReturn(regT1);
ret();
// 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);
+ LinkBuffer patchBuffer(*m_vm, this, GLOBAL_THUNK_ID);
patchBuffer.link(nativeCall, FunctionPtr(func));
- return patchBuffer.finalizeCode();
+ return FINALIZE_CODE(patchBuffer, ("JIT CTI native call"));
}
void JIT::emit_op_mov(Instruction* currentInstruction)
{
ASSERT(returnValueRegister != callFrameRegister);
emitLoad(currentInstruction[1].u.operand, regT1, regT0);
- 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);
-
- emitStoreCell(currentInstruction[1].u.operand, regT0);
+ 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);
+ emitStoreCell(currentInstruction[1].u.operand, resultReg);
}
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;
emitLoadPayload(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 into registers.
// We use regT0 for baseVal since we will be done with this first, and we can then use it for the result.
emitLoadPayload(value, regT2);
- emitLoadPayload(baseVal, regT0);
emitLoadPayload(proto, regT1);
// Check that 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.
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);
stubCall.addArgument(baseVal);
- 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);
- stubCall.addArgument(baseVal);
stubCall.addArgument(proto);
stubCall.call(dst);
}
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);
+ compare32(Equal, regT0, regT1, regT0);
+
+ notMasqueradesAsUndefined.link(this);
done.link(this);
emitStoreBool(dst, regT0);
}
void JIT::emit_op_tear_off_activation(Instruction* currentInstruction)
{
unsigned activation = currentInstruction[1].u.operand;
- unsigned arguments = currentInstruction[2].u.operand;
- Jump activationCreated = branch32(NotEqual, tagFor(activation), TrustedImm32(JSValue::EmptyValueTag));
- Jump argumentsNotCreated = branch32(Equal, tagFor(arguments), TrustedImm32(JSValue::EmptyValueTag));
- activationCreated.link(this);
+ Jump activationNotCreated = branch32(Equal, tagFor(activation), TrustedImm32(JSValue::EmptyValueTag));
JITStubCall stubCall(this, cti_op_tear_off_activation);
- stubCall.addArgument(currentInstruction[1].u.operand);
- stubCall.addArgument(unmodifiedArgumentsRegister(currentInstruction[2].u.operand));
+ stubCall.addArgument(activation);
stubCall.call();
- argumentsNotCreated.link(this);
+ activationNotCreated.link(this);
}
void JIT::emit_op_tear_off_arguments(Instruction* currentInstruction)
{
- int dst = currentInstruction[1].u.operand;
+ int arguments = currentInstruction[1].u.operand;
+ int activation = currentInstruction[2].u.operand;
- Jump argsNotCreated = branch32(Equal, tagFor(unmodifiedArgumentsRegister(dst)), TrustedImm32(JSValue::EmptyValueTag));
+ Jump argsNotCreated = branch32(Equal, tagFor(unmodifiedArgumentsRegister(arguments)), TrustedImm32(JSValue::EmptyValueTag));
JITStubCall stubCall(this, cti_op_tear_off_arguments);
- stubCall.addArgument(unmodifiedArgumentsRegister(dst));
+ stubCall.addArgument(unmodifiedArgumentsRegister(arguments));
+ stubCall.addArgument(activation);
stubCall.call();
argsNotCreated.link(this);
}
-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;
emitLoad(src, regT1, regT0);
Jump isImm = branch32(NotEqual, regT1, TrustedImm32(JSValue::CellTag));
- 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 dynamic)
-{
- // FIXME: Optimize to use patching instead of so many memory accesses.
-
- unsigned dst = currentInstruction[1].u.operand;
- void* globalObject = m_codeBlock->globalObject();
-
- unsigned currentIndex = m_globalResolveInfoIndex++;
- GlobalResolveInfo* resolveInfoAddress = &m_codeBlock->globalResolveInfo(currentIndex);
-
-
- // Verify structure.
- move(TrustedImmPtr(globalObject), regT0);
- move(TrustedImmPtr(resolveInfoAddress), regT3);
- loadPtr(Address(regT3, OBJECT_OFFSETOF(GlobalResolveInfo, structure)), regT1);
- addSlowCase(branchPtr(NotEqual, regT1, Address(regT0, JSCell::structureOffset())));
-
- // Load property.
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSGlobalObject, m_propertyStorage)), regT2);
- load32(Address(regT3, OBJECT_OFFSETOF(GlobalResolveInfo, offset)), regT3);
- load32(BaseIndex(regT2, regT3, TimesEight, OBJECT_OFFSETOF(JSValue, u.asBits.payload)), regT0); // payload
- load32(BaseIndex(regT2, regT3, TimesEight, OBJECT_OFFSETOF(JSValue, u.asBits.tag)), regT1); // tag
- emitValueProfilingSite();
- emitStore(dst, regT1, regT0);
- map(m_bytecodeOffset + (dynamic ? OPCODE_LENGTH(op_resolve_global_dynamic) : 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;
- 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.callWithValueProfiling(dst);
-}
-
void JIT::emit_op_not(Instruction* currentInstruction)
{
unsigned dst = currentInstruction[1].u.operand;
// 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);
-
ASSERT((JSValue::UndefinedTag + 1 == JSValue::NullTag) && (JSValue::NullTag & 0x1));
or32(TrustedImm32(1), regT1);
addJump(branch32(Equal, regT1, TrustedImm32(JSValue::NullTag)), 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
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;
emitLoad(src, regT1, regT0);
addJump(branch32(NotEqual, regT1, TrustedImm32(JSValue::CellTag)), target);
- addJump(branchPtr(NotEqual, regT0, TrustedImmPtr(ptr)), target);
+ addJump(branchPtr(NotEqual, regT0, TrustedImmPtr(actualPointerFor(m_codeBlock, ptr))), target);
}
void JIT::emit_op_eq(Instruction* currentInstruction)
genericCase.append(getSlowCase(iter)); // tags not equal
linkSlowCase(iter); // tags equal and JSCell
- genericCase.append(branchPtr(NotEqual, Address(regT0, JSCell::classInfoOffset()), TrustedImmPtr(&JSString::s_info)));
- genericCase.append(branchPtr(NotEqual, Address(regT2, JSCell::classInfoOffset()), TrustedImmPtr(&JSString::s_info)));
+ genericCase.append(branchPtr(NotEqual, Address(regT0, JSCell::structureOffset()), TrustedImmPtr(m_vm->stringStructure.get())));
+ genericCase.append(branchPtr(NotEqual, Address(regT2, JSCell::structureOffset()), TrustedImmPtr(m_vm->stringStructure.get())));
// String case.
JITStubCall stubCallEqStrings(this, cti_op_eq_strings);
genericCase.append(getSlowCase(iter)); // tags not equal
linkSlowCase(iter); // tags equal and JSCell
- genericCase.append(branchPtr(NotEqual, Address(regT0, JSCell::classInfoOffset()), TrustedImmPtr(&JSString::s_info)));
- genericCase.append(branchPtr(NotEqual, Address(regT2, JSCell::classInfoOffset()), TrustedImmPtr(&JSString::s_info)));
+ genericCase.append(branchPtr(NotEqual, Address(regT0, JSCell::structureOffset()), TrustedImmPtr(m_vm->stringStructure.get())));
+ genericCase.append(branchPtr(NotEqual, Address(regT2, JSCell::structureOffset()), TrustedImmPtr(m_vm->stringStructure.get())));
// String case.
JITStubCall stubCallEqStrings(this, cti_op_eq_strings);
// Jump to a slow case if both are strings.
Jump notCell = branch32(NotEqual, regT1, TrustedImm32(JSValue::CellTag));
- Jump firstNotString = branchPtr(NotEqual, Address(regT0, JSCell::classInfoOffset()), TrustedImmPtr(&JSString::s_info));
- addSlowCase(branchPtr(Equal, Address(regT2, JSCell::classInfoOffset()), TrustedImmPtr(&JSString::s_info)));
+ Jump firstNotString = branchPtr(NotEqual, Address(regT0, JSCell::structureOffset()), TrustedImmPtr(m_vm->stringStructure.get()));
+ addSlowCase(branchPtr(Equal, Address(regT2, JSCell::structureOffset()), TrustedImmPtr(m_vm->stringStructure.get())));
notCell.link(this);
firstNotString.link(this);
emitLoad(src, regT1, regT0);
Jump isImmediate = branch32(NotEqual, regT1, TrustedImm32(JSValue::CellTag));
- loadPtr(Address(regT0, JSCell::structureOffset()), regT1);
- test8(NonZero, Address(regT1, Structure::typeInfoFlagsOffset()), TrustedImm32(MasqueradesAsUndefined), regT1);
-
+ loadPtr(Address(regT0, JSCell::structureOffset()), regT2);
+ Jump isMasqueradesAsUndefined = branchTest8(NonZero, Address(regT2, Structure::typeInfoFlagsOffset()), TrustedImm32(MasqueradesAsUndefined));
+ move(TrustedImm32(0), regT1);
+ Jump wasNotMasqueradesAsUndefined = jump();
+
+ isMasqueradesAsUndefined.link(this);
+ move(TrustedImmPtr(m_codeBlock->globalObject()), regT0);
+ loadPtr(Address(regT2, Structure::globalObjectOffset()), regT2);
+ compare32(Equal, regT0, regT2, regT1);
Jump wasNotImmediate = jump();
isImmediate.link(this);
or32(regT2, regT1);
wasNotImmediate.link(this);
+ wasNotMasqueradesAsUndefined.link(this);
emitStoreBool(dst, regT1);
}
emitLoad(src, regT1, regT0);
Jump isImmediate = branch32(NotEqual, regT1, TrustedImm32(JSValue::CellTag));
- loadPtr(Address(regT0, JSCell::structureOffset()), regT1);
- test8(Zero, Address(regT1, Structure::typeInfoFlagsOffset()), TrustedImm32(MasqueradesAsUndefined), regT1);
-
+ loadPtr(Address(regT0, JSCell::structureOffset()), regT2);
+ Jump isMasqueradesAsUndefined = branchTest8(NonZero, Address(regT2, Structure::typeInfoFlagsOffset()), TrustedImm32(MasqueradesAsUndefined));
+ move(TrustedImm32(1), regT1);
+ Jump wasNotMasqueradesAsUndefined = jump();
+
+ isMasqueradesAsUndefined.link(this);
+ move(TrustedImmPtr(m_codeBlock->globalObject()), regT0);
+ loadPtr(Address(regT2, Structure::globalObjectOffset()), regT2);
+ compare32(NotEqual, regT0, regT2, regT1);
Jump wasNotImmediate = jump();
isImmediate.link(this);
and32(regT2, regT1);
wasNotImmediate.link(this);
+ wasNotMasqueradesAsUndefined.link(this);
emitStoreBool(dst, regT1);
}
-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_throw(Instruction* currentInstruction)
{
unsigned exception = currentInstruction[1].u.operand;
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);
- stubCall.call(currentInstruction[1].u.operand);
+ stubCall.call();
}
void JIT::emit_op_pop_scope(Instruction*)
JITStubCall(this, cti_op_pop_scope).call();
}
-void JIT::emit_op_to_jsnumber(Instruction* currentInstruction)
+void JIT::emit_op_to_number(Instruction* currentInstruction)
{
int dst = currentInstruction[1].u.operand;
int src = currentInstruction[2].u.operand;
emitLoad(src, regT1, regT0);
Jump isInt32 = branch32(Equal, regT1, TrustedImm32(JSValue::Int32Tag));
- addSlowCase(branch32(AboveOrEqual, regT1, TrustedImm32(JSValue::EmptyValueTag)));
+ addSlowCase(branch32(AboveOrEqual, regT1, TrustedImm32(JSValue::LowestTag)));
isInt32.link(this);
if (src != dst)
emitStore(dst, regT1, regT0);
- map(m_bytecodeOffset + OPCODE_LENGTH(op_to_jsnumber), dst, regT1, regT0);
+ map(m_bytecodeOffset + OPCODE_LENGTH(op_to_number), dst, regT1, regT0);
}
-void JIT::emitSlow_op_to_jsnumber(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+void JIT::emitSlow_op_to_number(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
int dst = currentInstruction[1].u.operand;
linkSlowCase(iter);
- JITStubCall stubCall(this, cti_op_to_jsnumber);
+ JITStubCall stubCall(this, cti_op_to_number);
stubCall.addArgument(regT1, regT0);
stubCall.call(dst);
}
-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);
- 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);
+ stubCall.addArgument(TrustedImm32(currentInstruction[3].u.operand));
+ stubCall.call();
}
void JIT::emit_op_catch(Instruction* currentInstruction)
move(regT0, callFrameRegister);
// Now store the exception returned by cti_op_throw.
- loadPtr(Address(stackPointerRegister, OBJECT_OFFSETOF(struct JITStackFrame, globalData)), regT3);
- load32(Address(regT3, OBJECT_OFFSETOF(JSGlobalData, exception) + OBJECT_OFFSETOF(JSValue, u.asBits.payload)), regT0);
- load32(Address(regT3, OBJECT_OFFSETOF(JSGlobalData, exception) + OBJECT_OFFSETOF(JSValue, u.asBits.tag)), regT1);
- store32(TrustedImm32(JSValue().payload()), Address(regT3, OBJECT_OFFSETOF(JSGlobalData, exception) + OBJECT_OFFSETOF(JSValue, u.asBits.payload)));
- store32(TrustedImm32(JSValue().tag()), Address(regT3, OBJECT_OFFSETOF(JSGlobalData, exception) + OBJECT_OFFSETOF(JSValue, u.asBits.tag)));
+ loadPtr(Address(stackPointerRegister, OBJECT_OFFSETOF(struct JITStackFrame, vm)), regT3);
+ load32(Address(regT3, OBJECT_OFFSETOF(VM, exception) + OBJECT_OFFSETOF(JSValue, u.asBits.payload)), regT0);
+ load32(Address(regT3, OBJECT_OFFSETOF(VM, exception) + OBJECT_OFFSETOF(JSValue, u.asBits.tag)), regT1);
+ store32(TrustedImm32(JSValue().payload()), Address(regT3, OBJECT_OFFSETOF(VM, exception) + OBJECT_OFFSETOF(JSValue, u.asBits.payload)));
+ store32(TrustedImm32(JSValue().tag()), Address(regT3, OBJECT_OFFSETOF(VM, exception) + OBJECT_OFFSETOF(JSValue, u.asBits.tag)));
unsigned exception = currentInstruction[1].u.operand;
emitStore(exception, regT1, regT0);
map(m_bytecodeOffset + OPCODE_LENGTH(op_catch), exception, regT1, regT0);
}
-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)
{
unsigned message = currentInstruction[1].u.operand;
- JITStubCall stubCall(this, cti_op_throw_reference_error);
+ JITStubCall stubCall(this, cti_op_throw_static_error);
stubCall.addArgument(m_codeBlock->getConstant(message));
+ stubCall.addArgument(TrustedImm32(currentInstruction[2].u.operand));
stubCall.call();
}
stubCall.addArgument(Imm32(currentInstruction[1].u.operand));
stubCall.addArgument(Imm32(currentInstruction[2].u.operand));
stubCall.addArgument(Imm32(currentInstruction[3].u.operand));
+ stubCall.addArgument(Imm32(currentInstruction[4].u.operand));
stubCall.call();
#endif
}
void JIT::emit_op_enter(Instruction*)
{
+ emitEnterOptimizationCheck();
+
// 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.
void JIT::emit_op_get_callee(Instruction* currentInstruction)
{
int dst = currentInstruction[1].u.operand;
- emitGetFromCallFrameHeaderPtr(RegisterFile::Callee, regT0);
- emitStoreCell(dst, regT0);
+ emitGetFromCallFrameHeaderPtr(JSStack::Callee, regT0);
+ move(TrustedImm32(JSValue::CellTag), regT1);
+ emitValueProfilingSite();
+ emitStore(dst, regT1, regT0);
}
void JIT::emit_op_create_this(Instruction* currentInstruction)
{
- emitLoad(currentInstruction[2].u.operand, regT1, regT0);
- emitJumpSlowCaseIfNotJSCell(currentInstruction[2].u.operand, regT1);
- loadPtr(Address(regT0, 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(regT0, 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;
- emitStoreCell(currentInstruction[1].u.operand, regT0);
+ emitLoadPayload(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);
+ emitStoreCell(currentInstruction[1].u.operand, resultReg);
}
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
- unsigned protoRegister = currentInstruction[2].u.operand;
- emitLoad(protoRegister, regT1, regT0);
+
JITStubCall stubCall(this, cti_op_create_this);
- stubCall.addArgument(regT1, regT0);
+ stubCall.addArgument(TrustedImm32(currentInstruction[3].u.operand));
stubCall.call(currentInstruction[1].u.operand);
}
{
unsigned thisRegister = currentInstruction[1].u.operand;
- emitLoad(thisRegister, regT1, regT0);
+ emitLoad(thisRegister, regT3, regT2);
- addSlowCase(branch32(NotEqual, regT1, TrustedImm32(JSValue::CellTag)));
- addSlowCase(branchPtr(Equal, Address(regT0, JSCell::classInfoOffset()), TrustedImmPtr(&JSString::s_info)));
-
- map(m_bytecodeOffset + OPCODE_LENGTH(op_convert_this), thisRegister, regT1, regT0);
+ addSlowCase(branch32(NotEqual, regT3, TrustedImm32(JSValue::CellTag)));
+ if (shouldEmitProfiling()) {
+ loadPtr(Address(regT2, JSCell::structureOffset()), regT0);
+ move(regT3, regT1);
+ emitValueProfilingSite();
+ }
+ addSlowCase(branchPtr(Equal, Address(regT2, JSCell::structureOffset()), TrustedImmPtr(m_vm->stringStructure.get())));
}
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();
unsigned thisRegister = currentInstruction[1].u.operand;
linkSlowCase(iter);
- Jump isNotUndefined = branch32(NotEqual, regT1, TrustedImm32(JSValue::UndefinedTag));
+ if (shouldEmitProfiling()) {
+ move(TrustedImm32(JSValue::UndefinedTag), regT1);
+ move(TrustedImm32(0), regT0);
+ }
+ Jump isNotUndefined = branch32(NotEqual, regT3, TrustedImm32(JSValue::UndefinedTag));
+ emitValueProfilingSite();
move(TrustedImmPtr(globalThis), regT0);
move(TrustedImm32(JSValue::CellTag), regT1);
emitStore(thisRegister, regT1, regT0);
emitJumpSlowToHot(jump(), OPCODE_LENGTH(op_convert_this));
- isNotUndefined.link(this);
linkSlowCase(iter);
+ if (shouldEmitProfiling()) {
+ move(TrustedImm32(JSValue::CellTag), regT1);
+ move(TrustedImmPtr(m_vm->stringStructure.get()), regT0);
+ }
+ isNotUndefined.link(this);
+ emitValueProfilingSite();
JITStubCall stubCall(this, cti_op_convert_this);
- stubCall.addArgument(regT1, regT0);
+ stubCall.addArgument(regT3, regT2);
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);
}
void JIT::emit_op_get_arguments_length(Instruction* currentInstruction)
int dst = currentInstruction[1].u.operand;
int argumentsRegister = currentInstruction[2].u.operand;
addSlowCase(branch32(NotEqual, tagFor(argumentsRegister), TrustedImm32(JSValue::EmptyValueTag)));
- load32(payloadFor(RegisterFile::ArgumentCount), regT0);
+ load32(payloadFor(JSStack::ArgumentCount), regT0);
sub32(TrustedImm32(1), regT0);
emitStoreInt32(dst, regT0);
}
addSlowCase(branch32(NotEqual, regT1, TrustedImm32(JSValue::Int32Tag)));
add32(TrustedImm32(1), regT2);
// regT2 now contains the integer index of the argument we want, including this
- load32(payloadFor(RegisterFile::ArgumentCount), regT3);
+ load32(payloadFor(JSStack::ArgumentCount), regT3);
addSlowCase(branch32(AboveOrEqual, regT2, regT3));
neg32(regT2);
loadPtr(BaseIndex(callFrameRegister, regT2, TimesEight, OBJECT_OFFSETOF(JSValue, u.asBits.payload) + CallFrame::thisArgumentOffset() * static_cast<int>(sizeof(Register))), regT0);
loadPtr(BaseIndex(callFrameRegister, regT2, TimesEight, OBJECT_OFFSETOF(JSValue, u.asBits.tag) + CallFrame::thisArgumentOffset() * static_cast<int>(sizeof(Register))), regT1);
+ emitValueProfilingSite();
emitStore(dst, regT1, regT0);
}
emitStore(unmodifiedArgumentsRegister(arguments), regT1, regT0);
skipArgumentsCreation.link(this);
- JITStubCall stubCall(this, cti_op_get_by_val);
+ JITStubCall stubCall(this, cti_op_get_by_val_generic);
stubCall.addArgument(arguments);
stubCall.addArgument(property);
- 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)
+ addSlowCase(branchPtr(NotEqual, payloadFor(base), TrustedImmPtr(globalObject)));
+
+ emitLoad(value, regT1, regT0);
+ storePtr(regT0, reinterpret_cast<char*>(operation->m_registerAddress) + OBJECT_OFFSETOF(JSValue, u.asBits.payload));
+ storePtr(regT1, reinterpret_cast<char*>(operation->m_registerAddress) + OBJECT_OFFSETOF(JSValue, u.asBits.tag));
+ if (Heap::isWriteBarrierEnabled())
+ emitWriteBarrier(globalObject, regT0, regT2, ShouldFilterImmediates, WriteBarrierForVariableAccess);
+ break;
+ }
+ case PutToBaseOperation::VariablePut: {
+ loadPtr(payloadFor(base), regT3);
+ emitLoad(value, regT1, regT0);
+ loadPtr(Address(regT3, JSVariableObject::offsetOfRegisters()), regT2);
+ store32(regT0, Address(regT2, operation->m_offset * sizeof(Register) + OBJECT_OFFSETOF(JSValue, u.asBits.payload)));
+ store32(regT1, Address(regT2, operation->m_offset * sizeof(Register) + OBJECT_OFFSETOF(JSValue, u.asBits.tag)));
+ if (Heap::isWriteBarrierEnabled())
+ emitWriteBarrier(regT3, regT1, regT0, regT2, ShouldFilterImmediates, WriteBarrierForVariableAccess);
+ break;
+ }
+
+ case PutToBaseOperation::GlobalPropertyPut: {
+ JSGlobalObject* globalObject = m_codeBlock->globalObject();
+ loadPtr(payloadFor(base), regT3);
+ emitLoad(value, regT1, regT0);
+ loadPtr(&operation->m_structure, regT2);
+ addSlowCase(branchPtr(NotEqual, Address(regT3, JSCell::structureOffset()), regT2));
+ ASSERT(!operation->m_structure || !operation->m_structure->inlineCapacity());
+ loadPtr(Address(regT3, JSObject::butterflyOffset()), regT2);
+ load32(&operation->m_offsetInButterfly, regT3);
+ storePtr(regT0, BaseIndex(regT2, regT3, TimesEight, OBJECT_OFFSETOF(JSValue, u.asBits.payload)));
+ storePtr(regT1, BaseIndex(regT2, regT3, TimesEight, OBJECT_OFFSETOF(JSValue, u.asBits.tag)));
+ if (Heap::isWriteBarrierEnabled())
+ emitWriteBarrier(globalObject, regT1, regT2, ShouldFilterImmediates, WriteBarrierForVariableAccess);
+ break;
+ }
+
+ 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();
+ break;
+ }
}
} // namespace JSC
projects / apple / javascriptcore.git / blobdiff