/*
- * Copyright (C) 2009 Apple Inc. All rights reserved.
+ * Copyright (C) 2009, 2012, 2013, 2014 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 "JITStubCall.h"
+#include "CCallHelpers.h"
+#include "Debugger.h"
+#include "Exception.h"
+#include "JITInlines.h"
#include "JSArray.h"
#include "JSCell.h"
+#include "JSEnvironmentRecord.h"
#include "JSFunction.h"
-#include "JSPropertyNameIterator.h"
+#include "JSNameScope.h"
+#include "JSPropertyNameEnumerator.h"
#include "LinkBuffer.h"
+#include "MaxFrameExtentForSlowPathCall.h"
+#include "RepatchBuffer.h"
+#include "SlowPathCall.h"
+#include "TypeProfilerLog.h"
+#include "VirtualRegister.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);
+ emitFunctionPrologue();
+ 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);
-
- 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.
-
- move(regT0, callFrameRegister); // Eagerly restore caller frame register to avoid loading from stack.
+ subPtr(TrustedImm32(8), stackPointerRegister); // Align stack for call.
+ storePtr(X86Registers::ecx, Address(stackPointerRegister));
// call the function
nativeCall = call();
- 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 the function
- nativeCall = call();
-
- restoreReturnAddressBeforeReturn(regT3);
+ addPtr(TrustedImm32(8), stackPointerRegister);
-#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
+#elif CPU(ARM) || CPU(SH4) || CPU(MIPS)
+#if CPU(MIPS)
+ // Allocate stack space for (unused) 16 bytes (8-byte aligned) for 4 arguments.
subPtr(TrustedImm32(16), stackPointerRegister);
+#endif
- // Setup arg0
- move(callFrameRegister, MIPSRegisters::a0);
+ // Calling convention is f(argumentGPR0, argumentGPR1, ...).
+ // Host function signature is f(ExecState*).
+ move(callFrameRegister, argumentGPR0);
+
+ emitGetFromCallFrameHeaderPtr(JSStack::Callee, argumentGPR1);
+ loadPtr(Address(argumentGPR1, OBJECT_OFFSETOF(JSFunction, m_executable)), regT2);
- // 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 the function
nativeCall = call();
+#if CPU(MIPS)
// Restore stack space
addPtr(TrustedImm32(16), stackPointerRegister);
-
- 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 the function
- nativeCall = call();
+#endif
restoreReturnAddressBeforeReturn(regT3);
#else
#error "JIT not supported on this platform."
- breakpoint();
+ abortWithReason(JITNotSupported);
#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(vm->addressOfException()), TrustedImm32(0));
+ emitFunctionEpilogue();
// Return.
ret();
// Handle an exception
sawException.link(this);
- // Grab the return address.
- preserveReturnAddressAfterCall(regT1);
+ storePtr(callFrameRegister, &m_vm->topCallFrame);
- 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);
+#if CPU(X86)
+ addPtr(TrustedImm32(-4), stackPointerRegister);
+ loadPtr(Address(callFrameRegister), X86Registers::ecx);
+ push(X86Registers::ecx);
+#else
+ loadPtr(Address(callFrameRegister), argumentGPR0);
+#endif
+ move(TrustedImmPtr(FunctionPtr(operationVMHandleException).value()), regT3);
+ call(regT3);
- ret();
+#if CPU(X86)
+ addPtr(TrustedImm32(8), stackPointerRegister);
+#endif
+
+ jumpToExceptionHandler();
// 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)
{
- unsigned dst = currentInstruction[1].u.operand;
- unsigned src = currentInstruction[2].u.operand;
-
+ int dst = currentInstruction[1].u.operand;
+ int src = currentInstruction[2].u.operand;
+
if (m_codeBlock->isConstantRegisterIndex(src))
emitStore(dst, getConstantOperand(src));
else {
emitLoad(src, regT1, regT0);
emitStore(dst, regT1, regT0);
- map(m_bytecodeOffset + OPCODE_LENGTH(op_mov), dst, regT1, regT0);
}
}
void JIT::emit_op_end(Instruction* currentInstruction)
{
- ASSERT(returnValueRegister != callFrameRegister);
+ ASSERT(returnValueGPR != callFrameRegister);
emitLoad(currentInstruction[1].u.operand, regT1, regT0);
- restoreReturnAddressBeforeReturn(Address(callFrameRegister, RegisterFile::ReturnPC * static_cast<int>(sizeof(Register))));
+ emitFunctionEpilogue();
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 = JSFinalObject::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);
+ int dst = currentInstruction[1].u.operand;
+ Structure* structure = currentInstruction[3].u.objectAllocationProfile->structure();
+ callOperation(operationNewObject, structure);
+ emitStoreCell(dst, returnValueGPR);
}
void JIT::emit_op_check_has_instance(Instruction* currentInstruction)
{
- unsigned baseVal = currentInstruction[1].u.operand;
+ int baseVal = currentInstruction[3].u.operand;
emitLoadPayload(baseVal, regT0);
emitJumpSlowCaseIfNotJSCell(baseVal);
// Check that baseVal 'ImplementsHasInstance'.
- loadPtr(Address(regT0, JSCell::structureOffset()), regT0);
- addSlowCase(branchTest8(Zero, Address(regT0, Structure::typeInfoFlagsOffset()), TrustedImm32(ImplementsHasInstance)));
+ addSlowCase(branchTest8(Zero, Address(regT0, JSCell::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;
+ int dst = currentInstruction[1].u.operand;
+ int value = currentInstruction[2].u.operand;
+ int 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.
emitJumpSlowCaseIfNotJSCell(proto);
// Check that prototype is an object
- 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)));
+ addSlowCase(emitJumpIfCellNotObject(regT1));
// Optimistically load the result true, and start looping.
// Initially, regT1 still contains proto and regT2 still contains value.
// Load the prototype of the cell in regT2. If this is equal to regT1 - WIN!
// Otherwise, check if we've hit null - if we have then drop out of the loop, if not go again.
- loadPtr(Address(regT2, JSCell::structureOffset()), regT2);
+ loadPtr(Address(regT2, JSCell::structureIDOffset()), regT2);
load32(Address(regT2, Structure::prototypeOffset() + OBJECT_OFFSETOF(JSValue, u.asBits.payload)), regT2);
Jump isInstance = branchPtr(Equal, regT2, regT1);
branchTest32(NonZero, regT2).linkTo(loop, this);
void JIT::emitSlow_op_check_has_instance(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
- unsigned baseVal = currentInstruction[1].u.operand;
+ int dst = currentInstruction[1].u.operand;
+ int value = currentInstruction[2].u.operand;
+ int baseVal = currentInstruction[3].u.operand;
linkSlowCaseIfNotJSCell(iter, baseVal);
linkSlowCase(iter);
- JITStubCall stubCall(this, cti_op_check_has_instance);
- stubCall.addArgument(baseVal);
- stubCall.call();
+ emitLoad(value, regT1, regT0);
+ emitLoad(baseVal, regT3, regT2);
+ callOperation(operationCheckHasInstance, dst, regT1, regT0, regT3, regT2);
+
+ 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;
+ int dst = currentInstruction[1].u.operand;
+ int value = currentInstruction[2].u.operand;
+ int 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);
+ emitLoad(value, regT1, regT0);
+ emitLoad(proto, regT3, regT2);
+ callOperation(operationInstanceOf, dst, regT1, regT0, regT3, regT2);
}
void JIT::emit_op_is_undefined(Instruction* currentInstruction)
{
- unsigned dst = currentInstruction[1].u.operand;
- unsigned value = currentInstruction[2].u.operand;
+ int dst = currentInstruction[1].u.operand;
+ int value = currentInstruction[2].u.operand;
emitLoad(value, regT1, regT0);
Jump isCell = branch32(Equal, regT1, TrustedImm32(JSValue::CellTag));
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(regT0, JSCell::typeInfoFlagsOffset()), TrustedImm32(MasqueradesAsUndefined));
+ move(TrustedImm32(0), regT0);
+ Jump notMasqueradesAsUndefined = jump();
+ isMasqueradesAsUndefined.link(this);
+ loadPtr(Address(regT0, JSCell::structureIDOffset()), regT1);
+ 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_is_boolean(Instruction* currentInstruction)
{
- unsigned dst = currentInstruction[1].u.operand;
- unsigned value = currentInstruction[2].u.operand;
+ int dst = currentInstruction[1].u.operand;
+ int value = currentInstruction[2].u.operand;
emitLoadTag(value, regT0);
compare32(Equal, regT0, TrustedImm32(JSValue::BooleanTag), regT0);
void JIT::emit_op_is_number(Instruction* currentInstruction)
{
- unsigned dst = currentInstruction[1].u.operand;
- unsigned value = currentInstruction[2].u.operand;
+ int dst = currentInstruction[1].u.operand;
+ int value = currentInstruction[2].u.operand;
emitLoadTag(value, regT0);
add32(TrustedImm32(1), regT0);
void JIT::emit_op_is_string(Instruction* currentInstruction)
{
- unsigned dst = currentInstruction[1].u.operand;
- unsigned value = currentInstruction[2].u.operand;
+ int dst = currentInstruction[1].u.operand;
+ int value = currentInstruction[2].u.operand;
emitLoad(value, regT1, regT0);
Jump isNotCell = branch32(NotEqual, regT1, TrustedImm32(JSValue::CellTag));
- loadPtr(Address(regT0, JSCell::structureOffset()), regT1);
- compare8(Equal, Address(regT1, Structure::typeInfoTypeOffset()), TrustedImm32(StringType), regT0);
+ compare8(Equal, Address(regT0, JSCell::typeInfoTypeOffset()), TrustedImm32(StringType), regT0);
Jump done = jump();
isNotCell.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);
- JITStubCall stubCall(this, cti_op_tear_off_activation);
- stubCall.addArgument(currentInstruction[1].u.operand);
- stubCall.addArgument(unmodifiedArgumentsRegister(currentInstruction[2].u.operand));
- stubCall.call();
- argumentsNotCreated.link(this);
-}
-
-void JIT::emit_op_tear_off_arguments(Instruction* currentInstruction)
+void JIT::emit_op_is_object(Instruction* currentInstruction)
{
int dst = currentInstruction[1].u.operand;
+ int value = currentInstruction[2].u.operand;
- Jump argsNotCreated = branch32(Equal, tagFor(unmodifiedArgumentsRegister(dst)), TrustedImm32(JSValue::EmptyValueTag));
- JITStubCall stubCall(this, cti_op_tear_off_arguments);
- stubCall.addArgument(unmodifiedArgumentsRegister(dst));
- stubCall.call();
- argsNotCreated.link(this);
-}
+ emitLoad(value, regT1, regT0);
+ Jump isNotCell = branch32(NotEqual, regT1, TrustedImm32(JSValue::CellTag));
-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);
+ compare8(AboveOrEqual, Address(regT0, JSCell::typeInfoTypeOffset()), TrustedImm32(ObjectType), regT0);
+ Jump done = jump();
+
+ isNotCell.link(this);
+ move(TrustedImm32(0), regT0);
+
+ done.link(this);
+ emitStoreBool(dst, regT0);
}
void JIT::emit_op_to_primitive(Instruction* currentInstruction)
emitLoad(src, regT1, regT0);
Jump isImm = branch32(NotEqual, regT1, TrustedImm32(JSValue::CellTag));
- addSlowCase(branchPtr(NotEqual, Address(regT0, JSCell::classInfoOffset()), TrustedImmPtr(&JSString::s_info)));
+ addSlowCase(emitJumpIfCellObject(regT0));
isImm.link(this);
if (dst != src)
emitStore(dst, regT1, regT0);
- map(m_bytecodeOffset + OPCODE_LENGTH(op_to_primitive), dst, regT1, regT0);
}
void JIT::emitSlow_op_to_primitive(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
- int dst = currentInstruction[1].u.operand;
-
linkSlowCase(iter);
- JITStubCall stubCall(this, cti_op_to_primitive);
- stubCall.addArgument(regT1, regT0);
- stubCall.call(dst);
+ JITSlowPathCall slowPathCall(this, currentInstruction, slow_path_to_primitive);
+ slowPathCall.call();
}
void JIT::emit_op_strcat(Instruction* currentInstruction)
{
- JITStubCall stubCall(this, cti_op_strcat);
- stubCall.addArgument(TrustedImm32(currentInstruction[2].u.operand));
- stubCall.addArgument(TrustedImm32(currentInstruction[3].u.operand));
- 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);
+ JITSlowPathCall slowPathCall(this, currentInstruction, slow_path_strcat);
+ slowPathCall.call();
}
void JIT::emit_op_not(Instruction* currentInstruction)
{
- unsigned dst = currentInstruction[1].u.operand;
- unsigned src = currentInstruction[2].u.operand;
+ int dst = currentInstruction[1].u.operand;
+ int src = currentInstruction[2].u.operand;
emitLoadTag(src, regT0);
void JIT::emitSlow_op_not(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
- unsigned dst = currentInstruction[1].u.operand;
- unsigned src = currentInstruction[2].u.operand;
-
linkSlowCase(iter);
- JITStubCall stubCall(this, cti_op_not);
- stubCall.addArgument(src);
- stubCall.call(dst);
+ JITSlowPathCall slowPathCall(this, currentInstruction, slow_path_not);
+ slowPathCall.call();
}
void JIT::emit_op_jfalse(Instruction* currentInstruction)
{
- unsigned cond = currentInstruction[1].u.operand;
+ int cond = currentInstruction[1].u.operand;
unsigned target = currentInstruction[2].u.operand;
emitLoad(cond, regT1, regT0);
void JIT::emitSlow_op_jfalse(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
- unsigned cond = currentInstruction[1].u.operand;
+ int cond = currentInstruction[1].u.operand;
unsigned target = currentInstruction[2].u.operand;
linkSlowCase(iter);
notNumber.link(this);
}
- JITStubCall stubCall(this, cti_op_jtrue);
- stubCall.addArgument(cond);
- stubCall.call();
- emitJumpSlowToHot(branchTest32(Zero, regT0), target); // Inverted.
+ callOperation(operationConvertJSValueToBoolean, regT1, regT0);
+ emitJumpSlowToHot(branchTest32(Zero, returnValueGPR), target); // Inverted.
}
void JIT::emit_op_jtrue(Instruction* currentInstruction)
{
- unsigned cond = currentInstruction[1].u.operand;
+ int cond = currentInstruction[1].u.operand;
unsigned target = currentInstruction[2].u.operand;
emitLoad(cond, regT1, regT0);
void JIT::emitSlow_op_jtrue(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
- unsigned cond = currentInstruction[1].u.operand;
+ int cond = currentInstruction[1].u.operand;
unsigned target = currentInstruction[2].u.operand;
linkSlowCase(iter);
notNumber.link(this);
}
- JITStubCall stubCall(this, cti_op_jtrue);
- stubCall.addArgument(cond);
- stubCall.call();
- emitJumpSlowToHot(branchTest32(NonZero, regT0), target);
+ callOperation(operationConvertJSValueToBoolean, regT1, regT0);
+ emitJumpSlowToHot(branchTest32(NonZero, returnValueGPR), target);
}
void JIT::emit_op_jeq_null(Instruction* currentInstruction)
{
- unsigned src = currentInstruction[1].u.operand;
+ int src = currentInstruction[1].u.operand;
unsigned target = currentInstruction[2].u.operand;
emitLoad(src, regT1, regT0);
Jump isImmediate = branch32(NotEqual, regT1, TrustedImm32(JSValue::CellTag));
- // 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(regT0, JSCell::typeInfoFlagsOffset()), TrustedImm32(MasqueradesAsUndefined));
+ loadPtr(Address(regT0, JSCell::structureIDOffset()), regT2);
+ 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)
{
- unsigned src = currentInstruction[1].u.operand;
+ int src = currentInstruction[1].u.operand;
unsigned target = currentInstruction[2].u.operand;
emitLoad(src, regT1, regT0);
Jump isImmediate = branch32(NotEqual, regT1, TrustedImm32(JSValue::CellTag));
- // 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);
-
+ addJump(branchTest8(Zero, Address(regT0, JSCell::typeInfoFlagsOffset()), TrustedImm32(MasqueradesAsUndefined)), target);
+ loadPtr(Address(regT0, JSCell::structureIDOffset()), regT2);
+ 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();
+ int src = currentInstruction[1].u.operand;
+ 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)
{
- unsigned dst = currentInstruction[1].u.operand;
- unsigned src1 = currentInstruction[2].u.operand;
- unsigned src2 = currentInstruction[3].u.operand;
+ int dst = currentInstruction[1].u.operand;
+ int src1 = currentInstruction[2].u.operand;
+ int src2 = currentInstruction[3].u.operand;
emitLoad2(src1, regT1, regT0, src2, regT3, regT2);
addSlowCase(branch32(NotEqual, regT1, regT3));
void JIT::emitSlow_op_eq(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
- unsigned dst = currentInstruction[1].u.operand;
- unsigned op1 = currentInstruction[2].u.operand;
- unsigned op2 = currentInstruction[3].u.operand;
+ int dst = currentInstruction[1].u.operand;
+ int op1 = currentInstruction[2].u.operand;
+ int op2 = currentInstruction[3].u.operand;
JumpList storeResult;
JumpList genericCase;
genericCase.append(getSlowCase(iter)); // tags not equal
linkSlowCase(iter); // tags equal and JSCell
- genericCase.append(branchPtr(NotEqual, Address(regT0, 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::structureIDOffset()), TrustedImmPtr(m_vm->stringStructure.get())));
+ genericCase.append(branchPtr(NotEqual, Address(regT2, JSCell::structureIDOffset()), TrustedImmPtr(m_vm->stringStructure.get())));
// String case.
- JITStubCall stubCallEqStrings(this, cti_op_eq_strings);
- stubCallEqStrings.addArgument(regT0);
- stubCallEqStrings.addArgument(regT2);
- stubCallEqStrings.call();
+ callOperation(operationCompareStringEq, regT0, regT2);
storeResult.append(jump());
// Generic case.
genericCase.append(getSlowCase(iter)); // doubles
genericCase.link(this);
- JITStubCall stubCallEq(this, cti_op_eq);
- stubCallEq.addArgument(op1);
- stubCallEq.addArgument(op2);
- stubCallEq.call(regT0);
+ emitLoad(op1, regT1, regT0);
+ emitLoad(op2, regT3, regT2);
+ callOperation(operationCompareEq, regT1, regT0, regT3, regT2);
storeResult.link(this);
- emitStoreBool(dst, regT0);
+ emitStoreBool(dst, returnValueGPR);
}
void JIT::emit_op_neq(Instruction* currentInstruction)
{
- unsigned dst = currentInstruction[1].u.operand;
- unsigned src1 = currentInstruction[2].u.operand;
- unsigned src2 = currentInstruction[3].u.operand;
+ int dst = currentInstruction[1].u.operand;
+ int src1 = currentInstruction[2].u.operand;
+ int src2 = currentInstruction[3].u.operand;
emitLoad2(src1, regT1, regT0, src2, regT3, regT2);
addSlowCase(branch32(NotEqual, regT1, regT3));
void JIT::emitSlow_op_neq(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
- unsigned dst = currentInstruction[1].u.operand;
+ int dst = currentInstruction[1].u.operand;
JumpList storeResult;
JumpList genericCase;
genericCase.append(getSlowCase(iter)); // tags not equal
linkSlowCase(iter); // tags equal and JSCell
- genericCase.append(branchPtr(NotEqual, Address(regT0, 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::structureIDOffset()), TrustedImmPtr(m_vm->stringStructure.get())));
+ genericCase.append(branchPtr(NotEqual, Address(regT2, JSCell::structureIDOffset()), TrustedImmPtr(m_vm->stringStructure.get())));
// String case.
- JITStubCall stubCallEqStrings(this, cti_op_eq_strings);
- stubCallEqStrings.addArgument(regT0);
- stubCallEqStrings.addArgument(regT2);
- stubCallEqStrings.call(regT0);
+ callOperation(operationCompareStringEq, regT0, regT2);
storeResult.append(jump());
// Generic case.
genericCase.append(getSlowCase(iter)); // doubles
genericCase.link(this);
- JITStubCall stubCallEq(this, cti_op_eq);
- stubCallEq.addArgument(regT1, regT0);
- stubCallEq.addArgument(regT3, regT2);
- stubCallEq.call(regT0);
+ callOperation(operationCompareEq, regT1, regT0, regT3, regT2);
storeResult.link(this);
- xor32(TrustedImm32(0x1), regT0);
- emitStoreBool(dst, regT0);
+ xor32(TrustedImm32(0x1), returnValueGPR);
+ emitStoreBool(dst, returnValueGPR);
}
void JIT::compileOpStrictEq(Instruction* currentInstruction, CompileOpStrictEqType type)
{
- unsigned dst = currentInstruction[1].u.operand;
- unsigned src1 = currentInstruction[2].u.operand;
- unsigned src2 = currentInstruction[3].u.operand;
+ int dst = currentInstruction[1].u.operand;
+ int src1 = currentInstruction[2].u.operand;
+ int src2 = currentInstruction[3].u.operand;
emitLoad2(src1, regT1, regT0, src2, regT3, regT2);
addSlowCase(branch32(NotEqual, regT1, regT3));
addSlowCase(branch32(Below, regT1, TrustedImm32(JSValue::LowestTag)));
- // Jump to a slow case if both are strings.
+ // Jump to a slow case if both are strings or symbols (non object).
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 firstIsObject = emitJumpIfCellObject(regT0);
+ addSlowCase(emitJumpIfCellNotObject(regT2));
notCell.link(this);
- firstNotString.link(this);
+ firstIsObject.link(this);
// Simply compare the payloads.
if (type == OpStrictEq)
void JIT::emitSlow_op_stricteq(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
- unsigned dst = currentInstruction[1].u.operand;
- unsigned src1 = currentInstruction[2].u.operand;
- unsigned src2 = currentInstruction[3].u.operand;
-
linkSlowCase(iter);
linkSlowCase(iter);
linkSlowCase(iter);
- JITStubCall stubCall(this, cti_op_stricteq);
- stubCall.addArgument(src1);
- stubCall.addArgument(src2);
- stubCall.call(dst);
+ JITSlowPathCall slowPathCall(this, currentInstruction, slow_path_stricteq);
+ slowPathCall.call();
}
void JIT::emit_op_nstricteq(Instruction* currentInstruction)
void JIT::emitSlow_op_nstricteq(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
- unsigned dst = currentInstruction[1].u.operand;
- unsigned src1 = currentInstruction[2].u.operand;
- unsigned src2 = currentInstruction[3].u.operand;
-
linkSlowCase(iter);
linkSlowCase(iter);
linkSlowCase(iter);
- JITStubCall stubCall(this, cti_op_nstricteq);
- stubCall.addArgument(src1);
- stubCall.addArgument(src2);
- stubCall.call(dst);
+ JITSlowPathCall slowPathCall(this, currentInstruction, slow_path_nstricteq);
+ slowPathCall.call();
}
void JIT::emit_op_eq_null(Instruction* currentInstruction)
{
- unsigned dst = currentInstruction[1].u.operand;
- unsigned src = currentInstruction[2].u.operand;
+ int dst = currentInstruction[1].u.operand;
+ int src = currentInstruction[2].u.operand;
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);
+ Jump isMasqueradesAsUndefined = branchTest8(NonZero, Address(regT0, JSCell::typeInfoFlagsOffset()), TrustedImm32(MasqueradesAsUndefined));
+ move(TrustedImm32(0), regT1);
+ Jump wasNotMasqueradesAsUndefined = jump();
+ isMasqueradesAsUndefined.link(this);
+ loadPtr(Address(regT0, JSCell::structureIDOffset()), regT2);
+ 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);
}
void JIT::emit_op_neq_null(Instruction* currentInstruction)
{
- unsigned dst = currentInstruction[1].u.operand;
- unsigned src = currentInstruction[2].u.operand;
+ int dst = currentInstruction[1].u.operand;
+ int src = currentInstruction[2].u.operand;
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);
+ Jump isMasqueradesAsUndefined = branchTest8(NonZero, Address(regT0, JSCell::typeInfoFlagsOffset()), TrustedImm32(MasqueradesAsUndefined));
+ move(TrustedImm32(1), regT1);
+ Jump wasNotMasqueradesAsUndefined = jump();
+ isMasqueradesAsUndefined.link(this);
+ loadPtr(Address(regT0, JSCell::structureIDOffset()), regT2);
+ 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;
- JITStubCall stubCall(this, cti_op_throw);
- stubCall.addArgument(exception);
- stubCall.call();
-
-#ifndef NDEBUG
- // cti_op_throw always changes it's return address,
- // this point in the code should never be reached.
- breakpoint();
-#endif
+ ASSERT(regT0 == returnValueGPR);
+ emitLoad(currentInstruction[1].u.operand, regT1, regT0);
+ callOperationNoExceptionCheck(operationThrow, regT1, regT0);
+ jumpToExceptionHandler();
}
-void JIT::emit_op_get_pnames(Instruction* currentInstruction)
+void JIT::emit_op_push_with_scope(Instruction* currentInstruction)
{
int dst = currentInstruction[1].u.operand;
- int base = currentInstruction[2].u.operand;
- int i = currentInstruction[3].u.operand;
- int size = currentInstruction[4].u.operand;
- int breakTarget = currentInstruction[5].u.operand;
-
- JumpList isNotObject;
-
- emitLoad(base, regT1, regT0);
- if (!m_codeBlock->isKnownNotImmediate(base))
- isNotObject.append(branch32(NotEqual, regT1, TrustedImm32(JSValue::CellTag)));
- if (base != m_codeBlock->thisRegister() || m_codeBlock->isStrictMode()) {
- loadPtr(Address(regT0, JSCell::structureOffset()), regT2);
- isNotObject.append(emitJumpIfNotObject(regT2));
- }
-
- // We could inline the case where you have a valid cache, but
- // this call doesn't seem to be hot.
- Label isObject(this);
- JITStubCall getPnamesStubCall(this, cti_op_get_pnames);
- getPnamesStubCall.addArgument(regT0);
- getPnamesStubCall.call(dst);
- load32(Address(regT0, OBJECT_OFFSETOF(JSPropertyNameIterator, m_jsStringsSize)), regT3);
- store32(TrustedImm32(Int32Tag), intTagFor(i));
- store32(TrustedImm32(0), intPayloadFor(i));
- store32(TrustedImm32(Int32Tag), intTagFor(size));
- store32(regT3, payloadFor(size));
- Jump end = jump();
-
- isNotObject.link(this);
- addJump(branch32(Equal, regT1, TrustedImm32(JSValue::NullTag)), breakTarget);
- addJump(branch32(Equal, regT1, TrustedImm32(JSValue::UndefinedTag)), breakTarget);
- JITStubCall toObjectStubCall(this, cti_to_object);
- toObjectStubCall.addArgument(regT1, regT0);
- toObjectStubCall.call(base);
- jump().linkTo(isObject, this);
+ emitLoad(currentInstruction[2].u.operand, regT1, regT0);
+ callOperation(operationPushWithScope, dst, regT1, regT0);
+}
- end.link(this);
+void JIT::emit_op_pop_scope(Instruction* currentInstruction)
+{
+ int scope = currentInstruction[1].u.operand;
+ callOperation(operationPopScope, scope);
}
-void JIT::emit_op_next_pname(Instruction* currentInstruction)
+void JIT::emit_op_to_number(Instruction* currentInstruction)
{
int dst = currentInstruction[1].u.operand;
- int base = currentInstruction[2].u.operand;
- int i = currentInstruction[3].u.operand;
- int size = currentInstruction[4].u.operand;
- int it = currentInstruction[5].u.operand;
- int target = currentInstruction[6].u.operand;
-
- JumpList callHasProperty;
-
- Label begin(this);
- load32(intPayloadFor(i), regT0);
- Jump end = branch32(Equal, regT0, intPayloadFor(size));
-
- // Grab key @ i
- loadPtr(payloadFor(it), regT1);
- loadPtr(Address(regT1, OBJECT_OFFSETOF(JSPropertyNameIterator, m_jsStrings)), regT2);
- load32(BaseIndex(regT2, regT0, TimesEight), regT2);
- store32(TrustedImm32(JSValue::CellTag), tagFor(dst));
- store32(regT2, payloadFor(dst));
-
- // Increment i
- add32(TrustedImm32(1), regT0);
- store32(regT0, intPayloadFor(i));
-
- // Verify that i is valid:
- loadPtr(payloadFor(base), regT0);
-
- // Test base's structure
- loadPtr(Address(regT0, JSCell::structureOffset()), regT2);
- callHasProperty.append(branchPtr(NotEqual, regT2, Address(Address(regT1, OBJECT_OFFSETOF(JSPropertyNameIterator, m_cachedStructure)))));
-
- // Test base's prototype chain
- loadPtr(Address(Address(regT1, OBJECT_OFFSETOF(JSPropertyNameIterator, m_cachedPrototypeChain))), regT3);
- loadPtr(Address(regT3, OBJECT_OFFSETOF(StructureChain, m_vector)), regT3);
- addJump(branchTestPtr(Zero, Address(regT3)), target);
-
- Label checkPrototype(this);
- callHasProperty.append(branch32(Equal, Address(regT2, Structure::prototypeOffset() + OBJECT_OFFSETOF(JSValue, u.asBits.tag)), TrustedImm32(JSValue::NullTag)));
- loadPtr(Address(regT2, Structure::prototypeOffset() + OBJECT_OFFSETOF(JSValue, u.asBits.payload)), regT2);
- loadPtr(Address(regT2, JSCell::structureOffset()), regT2);
- callHasProperty.append(branchPtr(NotEqual, regT2, Address(regT3)));
- addPtr(TrustedImm32(sizeof(Structure*)), regT3);
- branchTestPtr(NonZero, Address(regT3)).linkTo(checkPrototype, this);
-
- // Continue loop.
- addJump(jump(), target);
+ int src = currentInstruction[2].u.operand;
- // Slow case: Ask the object if i is valid.
- callHasProperty.link(this);
- loadPtr(addressFor(dst), regT1);
- JITStubCall stubCall(this, cti_has_property);
- stubCall.addArgument(regT0);
- stubCall.addArgument(regT1);
- stubCall.call();
+ emitLoad(src, regT1, regT0);
- // Test for valid key.
- addJump(branchTest32(NonZero, regT0), target);
- jump().linkTo(begin, this);
+ Jump isInt32 = branch32(Equal, regT1, TrustedImm32(JSValue::Int32Tag));
+ addSlowCase(branch32(AboveOrEqual, regT1, TrustedImm32(JSValue::LowestTag)));
+ isInt32.link(this);
- // End of loop.
- end.link(this);
+ if (src != dst)
+ emitStore(dst, regT1, regT0);
}
-void JIT::emit_op_push_scope(Instruction* currentInstruction)
+void JIT::emitSlow_op_to_number(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
- JITStubCall stubCall(this, cti_op_push_scope);
- stubCall.addArgument(currentInstruction[1].u.operand);
- stubCall.call(currentInstruction[1].u.operand);
-}
+ linkSlowCase(iter);
-void JIT::emit_op_pop_scope(Instruction*)
-{
- JITStubCall(this, cti_op_pop_scope).call();
+ JITSlowPathCall slowPathCall(this, currentInstruction, slow_path_to_number);
+ slowPathCall.call();
}
-void JIT::emit_op_to_jsnumber(Instruction* currentInstruction)
+void JIT::emit_op_to_string(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)));
- isInt32.link(this);
+ addSlowCase(branch32(NotEqual, regT1, TrustedImm32(JSValue::CellTag)));
+ addSlowCase(branch8(NotEqual, Address(regT0, JSCell::typeInfoTypeOffset()), TrustedImm32(StringType)));
if (src != dst)
emitStore(dst, regT1, regT0);
- map(m_bytecodeOffset + OPCODE_LENGTH(op_to_jsnumber), dst, regT1, regT0);
}
-void JIT::emitSlow_op_to_jsnumber(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+void JIT::emitSlow_op_to_string(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
- int dst = currentInstruction[1].u.operand;
-
- linkSlowCase(iter);
+ linkSlowCase(iter); // Not JSCell.
+ linkSlowCase(iter); // Not JSString.
- JITStubCall stubCall(this, cti_op_to_jsnumber);
- stubCall.addArgument(regT1, regT0);
- stubCall.call(dst);
+ JITSlowPathCall slowPathCall(this, currentInstruction, slow_path_to_string);
+ slowPathCall.call();
}
-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);
+ int dst = currentInstruction[1].u.operand;
+ emitLoad(currentInstruction[2].u.operand, regT1, regT0);
+ if (currentInstruction[4].u.operand == JSNameScope::CatchScope) {
+ callOperation(operationPushCatchScope, dst, jsCast<SymbolTable*>(getConstantOperand(currentInstruction[3].u.operand)), regT1, regT0);
+ return;
+ }
+
+ RELEASE_ASSERT(currentInstruction[4].u.operand == JSNameScope::FunctionNameScope);
+ callOperation(operationPushFunctionNameScope, dst, jsCast<SymbolTable*>(getConstantOperand(currentInstruction[3].u.operand)), regT1, regT0);
}
void JIT::emit_op_catch(Instruction* currentInstruction)
{
- // cti_op_throw returns the callFrame for the handler.
- move(regT0, callFrameRegister);
+ move(TrustedImmPtr(m_vm), regT3);
+ // operationThrow returns the callFrame for the handler.
+ load32(Address(regT3, VM::callFrameForThrowOffset()), callFrameRegister);
+ load32(Address(regT3, VM::vmEntryFrameForThrowOffset()), regT0);
+ store32(regT0, Address(regT3, VM::topVMEntryFrameOffset()));
+
+ addPtr(TrustedImm32(stackPointerOffsetFor(codeBlock()) * sizeof(Register)), callFrameRegister, stackPointerRegister);
+
+ // Now store the exception returned by operationThrow.
+ load32(Address(regT3, VM::exceptionOffset()), regT2);
+ move(TrustedImm32(JSValue::CellTag), regT1);
- // 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)));
+ store32(TrustedImm32(0), Address(regT3, VM::exceptionOffset()));
unsigned exception = currentInstruction[1].u.operand;
- emitStore(exception, regT1, regT0);
- map(m_bytecodeOffset + OPCODE_LENGTH(op_catch), exception, regT1, regT0);
-}
+ emitStore(exception, regT1, regT2);
-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);
+ load32(Address(regT2, Exception::valueOffset() + OBJECT_OFFSETOF(JSValue, u.asBits.payload)), regT0);
+ load32(Address(regT2, Exception::valueOffset() + OBJECT_OFFSETOF(JSValue, u.asBits.tag)), regT1);
+
+ unsigned thrownValue = currentInstruction[2].u.operand;
+ emitStore(thrownValue, regT1, regT0);
}
void JIT::emit_op_switch_imm(Instruction* currentInstruction)
{
- unsigned tableIndex = currentInstruction[1].u.operand;
+ size_t tableIndex = currentInstruction[1].u.operand;
unsigned defaultOffset = currentInstruction[2].u.operand;
unsigned scrutinee = currentInstruction[3].u.operand;
// create jump table for switch destinations, track this switch statement.
- SimpleJumpTable* jumpTable = &m_codeBlock->immediateSwitchJumpTable(tableIndex);
+ SimpleJumpTable* jumpTable = &m_codeBlock->switchJumpTable(tableIndex);
m_switches.append(SwitchRecord(jumpTable, m_bytecodeOffset, defaultOffset, SwitchRecord::Immediate));
- jumpTable->ctiOffsets.grow(jumpTable->branchOffsets.size());
+ jumpTable->ensureCTITable();
- JITStubCall stubCall(this, cti_op_switch_imm);
- stubCall.addArgument(scrutinee);
- stubCall.addArgument(TrustedImm32(tableIndex));
- stubCall.call();
- jump(regT0);
+ emitLoad(scrutinee, regT1, regT0);
+ callOperation(operationSwitchImmWithUnknownKeyType, regT1, regT0, tableIndex);
+ jump(returnValueGPR);
}
void JIT::emit_op_switch_char(Instruction* currentInstruction)
{
- unsigned tableIndex = currentInstruction[1].u.operand;
+ size_t tableIndex = currentInstruction[1].u.operand;
unsigned defaultOffset = currentInstruction[2].u.operand;
unsigned scrutinee = currentInstruction[3].u.operand;
// create jump table for switch destinations, track this switch statement.
- SimpleJumpTable* jumpTable = &m_codeBlock->characterSwitchJumpTable(tableIndex);
+ SimpleJumpTable* jumpTable = &m_codeBlock->switchJumpTable(tableIndex);
m_switches.append(SwitchRecord(jumpTable, m_bytecodeOffset, defaultOffset, SwitchRecord::Character));
- jumpTable->ctiOffsets.grow(jumpTable->branchOffsets.size());
+ jumpTable->ensureCTITable();
- JITStubCall stubCall(this, cti_op_switch_char);
- stubCall.addArgument(scrutinee);
- stubCall.addArgument(TrustedImm32(tableIndex));
- stubCall.call();
- jump(regT0);
+ emitLoad(scrutinee, regT1, regT0);
+ callOperation(operationSwitchCharWithUnknownKeyType, regT1, regT0, tableIndex);
+ jump(returnValueGPR);
}
void JIT::emit_op_switch_string(Instruction* currentInstruction)
{
- unsigned tableIndex = currentInstruction[1].u.operand;
+ size_t tableIndex = currentInstruction[1].u.operand;
unsigned defaultOffset = currentInstruction[2].u.operand;
unsigned scrutinee = currentInstruction[3].u.operand;
StringJumpTable* jumpTable = &m_codeBlock->stringSwitchJumpTable(tableIndex);
m_switches.append(SwitchRecord(jumpTable, m_bytecodeOffset, defaultOffset));
- JITStubCall stubCall(this, cti_op_switch_string);
- stubCall.addArgument(scrutinee);
- stubCall.addArgument(TrustedImm32(tableIndex));
- stubCall.call();
- jump(regT0);
+ emitLoad(scrutinee, regT1, regT0);
+ callOperation(operationSwitchStringWithUnknownKeyType, regT1, regT0, tableIndex);
+ jump(returnValueGPR);
}
-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);
- stubCall.addArgument(m_codeBlock->getConstant(message));
- stubCall.call();
+ emitLoad(m_codeBlock->getConstant(currentInstruction[1].u.operand), regT1, regT0);
+ callOperation(operationThrowStaticError, regT1, regT0, currentInstruction[2].u.operand);
}
void JIT::emit_op_debug(Instruction* currentInstruction)
{
-#if ENABLE(DEBUG_WITH_BREAKPOINT)
- UNUSED_PARAM(currentInstruction);
- breakpoint();
-#else
- JITStubCall stubCall(this, cti_op_debug);
- stubCall.addArgument(Imm32(currentInstruction[1].u.operand));
- stubCall.addArgument(Imm32(currentInstruction[2].u.operand));
- stubCall.addArgument(Imm32(currentInstruction[3].u.operand));
- stubCall.call();
-#endif
+ load32(codeBlock()->debuggerRequestsAddress(), regT0);
+ Jump noDebuggerRequests = branchTest32(Zero, regT0);
+ callOperation(operationDebug, currentInstruction[1].u.operand);
+ noDebuggerRequests.link(this);
}
-void JIT::emit_op_enter(Instruction*)
+void JIT::emit_op_enter(Instruction* currentInstruction)
{
+ 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.
for (int i = 0; i < m_codeBlock->m_numVars; ++i)
- emitStore(i, jsUndefined());
-}
+ emitStore(virtualRegisterForLocal(i).offset(), jsUndefined());
-void JIT::emit_op_create_activation(Instruction* currentInstruction)
-{
- unsigned activation = currentInstruction[1].u.operand;
-
- Jump activationCreated = branch32(NotEqual, tagFor(activation), TrustedImm32(JSValue::EmptyValueTag));
- JITStubCall(this, cti_op_push_activation).call(activation);
- activationCreated.link(this);
+ JITSlowPathCall slowPathCall(this, currentInstruction, slow_path_enter);
+ slowPathCall.call();
}
-void JIT::emit_op_create_arguments(Instruction* currentInstruction)
+void JIT::emit_op_create_lexical_environment(Instruction* currentInstruction)
{
- unsigned dst = currentInstruction[1].u.operand;
-
- Jump argsCreated = branch32(NotEqual, tagFor(dst), TrustedImm32(JSValue::EmptyValueTag));
+ int lexicalEnvironment = currentInstruction[1].u.operand;
+ int scope = currentInstruction[2].u.operand;
- JITStubCall(this, cti_op_create_arguments).call();
- emitStore(dst, regT1, regT0);
- emitStore(unmodifiedArgumentsRegister(dst), regT1, regT0);
-
- argsCreated.link(this);
-}
-
-void JIT::emit_op_init_lazy_reg(Instruction* currentInstruction)
-{
- unsigned dst = currentInstruction[1].u.operand;
-
- emitStore(dst, JSValue());
+ emitLoadPayload(currentInstruction[2].u.operand, regT0);
+ callOperation(operationCreateActivation, regT0);
+ emitStoreCell(lexicalEnvironment, returnValueGPR);
+ emitStoreCell(scope, returnValueGPR);
}
-void JIT::emit_op_get_callee(Instruction* currentInstruction)
+void JIT::emit_op_get_scope(Instruction* currentInstruction)
{
int dst = currentInstruction[1].u.operand;
- emitGetFromCallFrameHeaderPtr(RegisterFile::Callee, regT0);
+ emitGetFromCallFrameHeaderPtr(JSStack::Callee, regT0);
+ loadPtr(Address(regT0, JSFunction::offsetOfScopeChain()), regT0);
emitStoreCell(dst, 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;
+ WriteBarrierBase<JSCell>* cachedFunction = ¤tInstruction[4].u.jsCell;
+ RegisterID calleeReg = regT0;
+ RegisterID rareDataReg = regT4;
+ RegisterID resultReg = regT0;
+ RegisterID allocatorReg = regT1;
+ RegisterID structureReg = regT2;
+ RegisterID cachedFunctionReg = regT4;
+ RegisterID scratchReg = regT3;
+
+ emitLoadPayload(callee, calleeReg);
+ loadPtr(Address(calleeReg, JSFunction::offsetOfRareData()), rareDataReg);
+ addSlowCase(branchTestPtr(Zero, rareDataReg));
+ loadPtr(Address(rareDataReg, FunctionRareData::offsetOfAllocationProfile() + ObjectAllocationProfile::offsetOfAllocator()), allocatorReg);
+ loadPtr(Address(rareDataReg, FunctionRareData::offsetOfAllocationProfile() + ObjectAllocationProfile::offsetOfStructure()), structureReg);
+ addSlowCase(branchTestPtr(Zero, allocatorReg));
+
+ loadPtr(cachedFunction, cachedFunctionReg);
+ Jump hasSeenMultipleCallees = branchPtr(Equal, cachedFunctionReg, TrustedImmPtr(JSCell::seenMultipleCalleeObjects()));
+ addSlowCase(branchPtr(NotEqual, calleeReg, cachedFunctionReg));
+ hasSeenMultipleCallees.link(this);
- emitStoreCell(currentInstruction[1].u.operand, regT0);
+ 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 rare data
+ 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.call(currentInstruction[1].u.operand);
+ linkSlowCase(iter); // cached function didn't match
+
+ JITSlowPathCall slowPathCall(this, currentInstruction, slow_path_create_this);
+ slowPathCall.call();
}
-void JIT::emit_op_convert_this(Instruction* currentInstruction)
+void JIT::emit_op_to_this(Instruction* currentInstruction)
{
- unsigned thisRegister = currentInstruction[1].u.operand;
-
- emitLoad(thisRegister, regT1, regT0);
+ WriteBarrierBase<Structure>* cachedStructure = ¤tInstruction[2].u.structure;
+ int thisRegister = currentInstruction[1].u.operand;
- addSlowCase(branch32(NotEqual, regT1, TrustedImm32(JSValue::CellTag)));
- addSlowCase(branchPtr(Equal, Address(regT0, JSCell::classInfoOffset()), TrustedImmPtr(&JSString::s_info)));
+ emitLoad(thisRegister, regT3, regT2);
- map(m_bytecodeOffset + OPCODE_LENGTH(op_convert_this), thisRegister, regT1, regT0);
+ addSlowCase(branch32(NotEqual, regT3, TrustedImm32(JSValue::CellTag)));
+ addSlowCase(branch8(NotEqual, Address(regT2, JSCell::typeInfoTypeOffset()), TrustedImm32(FinalObjectType)));
+ loadPtr(Address(regT2, JSCell::structureIDOffset()), regT0);
+ loadPtr(cachedStructure, regT2);
+ addSlowCase(branchPtr(NotEqual, regT0, regT2));
}
-void JIT::emitSlow_op_convert_this(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+void JIT::emitSlow_op_to_this(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
- void* globalThis = m_codeBlock->globalObject()->globalScopeChain()->globalThis.get();
- unsigned thisRegister = currentInstruction[1].u.operand;
-
linkSlowCase(iter);
- Jump isNotUndefined = branch32(NotEqual, regT1, TrustedImm32(JSValue::UndefinedTag));
- move(TrustedImmPtr(globalThis), regT0);
- move(TrustedImm32(JSValue::CellTag), regT1);
- emitStore(thisRegister, regT1, regT0);
- emitJumpSlowToHot(jump(), OPCODE_LENGTH(op_convert_this));
+ linkSlowCase(iter);
+ linkSlowCase(iter);
+ JITSlowPathCall slowPathCall(this, currentInstruction, slow_path_to_this);
+ slowPathCall.call();
+}
+
+void JIT::emit_op_check_tdz(Instruction* currentInstruction)
+{
+ emitLoadTag(currentInstruction[1].u.operand, regT0);
+ addSlowCase(branch32(Equal, regT0, TrustedImm32(JSValue::EmptyValueTag)));
+}
- isNotUndefined.link(this);
+void JIT::emitSlow_op_check_tdz(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+{
linkSlowCase(iter);
- JITStubCall stubCall(this, cti_op_convert_this);
- stubCall.addArgument(regT1, regT0);
- stubCall.call(thisRegister);
+ JITSlowPathCall slowPathCall(this, currentInstruction, slow_path_throw_tdz_error);
+ slowPathCall.call();
}
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);
+ load32(m_vm->enabledProfilerAddress(), regT0);
+ Jump profilerDone = branchTestPtr(Zero, regT0);
+ emitLoad(currentInstruction[1].u.operand, regT1, regT0);
+ callOperation(operationProfileWillCall, regT1, regT0);
+ profilerDone.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);
+ load32(m_vm->enabledProfilerAddress(), regT0);
+ Jump profilerDone = branchTestPtr(Zero, regT0);
+ emitLoad(currentInstruction[1].u.operand, regT1, regT0);
+ callOperation(operationProfileDidCall, regT1, regT0);
+ profilerDone.link(this);
}
-void JIT::emit_op_get_arguments_length(Instruction* currentInstruction)
+void JIT::emit_op_has_structure_property(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);
- sub32(TrustedImm32(1), regT0);
- emitStoreInt32(dst, regT0);
+ int base = currentInstruction[2].u.operand;
+ int enumerator = currentInstruction[4].u.operand;
+
+ emitLoadPayload(base, regT0);
+ emitJumpSlowCaseIfNotJSCell(base);
+
+ emitLoadPayload(enumerator, regT1);
+
+ load32(Address(regT0, JSCell::structureIDOffset()), regT0);
+ addSlowCase(branch32(NotEqual, regT0, Address(regT1, JSPropertyNameEnumerator::cachedStructureIDOffset())));
+
+ move(TrustedImm32(1), regT0);
+ emitStoreBool(dst, regT0);
}
-void JIT::emitSlow_op_get_arguments_length(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+void JIT::privateCompileHasIndexedProperty(ByValInfo* byValInfo, ReturnAddressPtr returnAddress, JITArrayMode arrayMode)
+{
+ Instruction* currentInstruction = m_codeBlock->instructions().begin() + byValInfo->bytecodeIndex;
+
+ PatchableJump badType;
+
+ // FIXME: Add support for other types like TypedArrays and Arguments.
+ // See https://bugs.webkit.org/show_bug.cgi?id=135033 and https://bugs.webkit.org/show_bug.cgi?id=135034.
+ JumpList slowCases = emitLoadForArrayMode(currentInstruction, arrayMode, badType);
+ move(TrustedImm32(1), regT0);
+ Jump done = jump();
+
+ LinkBuffer patchBuffer(*m_vm, *this, m_codeBlock);
+
+ patchBuffer.link(badType, CodeLocationLabel(MacroAssemblerCodePtr::createFromExecutableAddress(returnAddress.value())).labelAtOffset(byValInfo->returnAddressToSlowPath));
+ patchBuffer.link(slowCases, CodeLocationLabel(MacroAssemblerCodePtr::createFromExecutableAddress(returnAddress.value())).labelAtOffset(byValInfo->returnAddressToSlowPath));
+
+ patchBuffer.link(done, byValInfo->badTypeJump.labelAtOffset(byValInfo->badTypeJumpToDone));
+
+ byValInfo->stubRoutine = FINALIZE_CODE_FOR_STUB(
+ m_codeBlock, patchBuffer,
+ ("Baseline has_indexed_property stub for %s, return point %p", toCString(*m_codeBlock).data(), returnAddress.value()));
+
+ RepatchBuffer repatchBuffer(m_codeBlock);
+ repatchBuffer.relink(byValInfo->badTypeJump, CodeLocationLabel(byValInfo->stubRoutine->code().code()));
+ repatchBuffer.relinkCallerToFunction(returnAddress, FunctionPtr(operationHasIndexedPropertyGeneric));
+}
+
+void JIT::emit_op_has_indexed_property(Instruction* currentInstruction)
{
- linkSlowCase(iter);
int dst = currentInstruction[1].u.operand;
int base = currentInstruction[2].u.operand;
- int ident = currentInstruction[3].u.operand;
+ int property = currentInstruction[3].u.operand;
+ ArrayProfile* profile = currentInstruction[4].u.arrayProfile;
- JITStubCall stubCall(this, cti_op_get_by_id_generic);
- stubCall.addArgument(base);
- stubCall.addArgument(TrustedImmPtr(&(m_codeBlock->identifier(ident))));
- stubCall.call(dst);
+ emitLoadPayload(base, regT0);
+ emitJumpSlowCaseIfNotJSCell(base);
+
+ emitLoadPayload(property, regT1);
+
+ // This is technically incorrect - we're zero-extending an int32. On the hot path this doesn't matter.
+ // We check the value as if it was a uint32 against the m_vectorLength - which will always fail if
+ // number was signed since m_vectorLength is always less than intmax (since the total allocation
+ // size is always less than 4Gb). As such zero extending will have been correct (and extending the value
+ // to 64-bits is necessary since it's used in the address calculation. We zero extend rather than sign
+ // extending since it makes it easier to re-tag the value in the slow case.
+ zeroExtend32ToPtr(regT1, regT1);
+
+ emitArrayProfilingSiteWithCell(regT0, regT2, profile);
+ and32(TrustedImm32(IndexingShapeMask), regT2);
+
+ JITArrayMode mode = chooseArrayMode(profile);
+ PatchableJump badType;
+
+ // FIXME: Add support for other types like TypedArrays and Arguments.
+ // See https://bugs.webkit.org/show_bug.cgi?id=135033 and https://bugs.webkit.org/show_bug.cgi?id=135034.
+ JumpList slowCases = emitLoadForArrayMode(currentInstruction, mode, badType);
+ move(TrustedImm32(1), regT0);
+
+ addSlowCase(badType);
+ addSlowCase(slowCases);
+
+ Label done = label();
+
+ emitStoreBool(dst, regT0);
+
+ m_byValCompilationInfo.append(ByValCompilationInfo(m_bytecodeOffset, badType, mode, done));
}
-void JIT::emit_op_get_argument_by_val(Instruction* currentInstruction)
+void JIT::emitSlow_op_has_indexed_property(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
int dst = currentInstruction[1].u.operand;
- int argumentsRegister = currentInstruction[2].u.operand;
+ int base = currentInstruction[2].u.operand;
int property = currentInstruction[3].u.operand;
- addSlowCase(branch32(NotEqual, tagFor(argumentsRegister), TrustedImm32(JSValue::EmptyValueTag)));
- emitLoad(property, regT1, regT2);
- 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);
- addSlowCase(branch32(AboveOrEqual, regT2, regT3));
+ ArrayProfile* profile = currentInstruction[4].u.arrayProfile;
+
+ linkSlowCaseIfNotJSCell(iter, base); // base cell check
+ linkSlowCase(iter); // base array check
+ linkSlowCase(iter); // vector length check
+ linkSlowCase(iter); // empty value
+
+ Label slowPath = label();
+ emitLoad(base, regT1, regT0);
+ emitLoad(property, regT3, regT2);
+ Call call = callOperation(operationHasIndexedPropertyDefault, dst, regT1, regT0, regT3, regT2, profile);
+
+ m_byValCompilationInfo[m_byValInstructionIndex].slowPathTarget = slowPath;
+ m_byValCompilationInfo[m_byValInstructionIndex].returnAddress = call;
+ m_byValInstructionIndex++;
+}
+
+void JIT::emit_op_get_direct_pname(Instruction* currentInstruction)
+{
+ int dst = currentInstruction[1].u.operand;
+ int base = currentInstruction[2].u.operand;
+ int index = currentInstruction[4].u.operand;
+ int enumerator = currentInstruction[5].u.operand;
+
+ // Check that base is a cell
+ emitLoadPayload(base, regT0);
+ emitJumpSlowCaseIfNotJSCell(base);
+
+ // Check the structure
+ emitLoadPayload(enumerator, regT1);
+ load32(Address(regT0, JSCell::structureIDOffset()), regT2);
+ addSlowCase(branch32(NotEqual, regT2, Address(regT1, JSPropertyNameEnumerator::cachedStructureIDOffset())));
+
+ // Compute the offset
+ emitLoadPayload(index, regT2);
+ // If index is less than the enumerator's cached inline storage, then it's an inline access
+ Jump outOfLineAccess = branch32(AboveOrEqual, regT2, Address(regT1, JSPropertyNameEnumerator::cachedInlineCapacityOffset()));
+ addPtr(TrustedImm32(JSObject::offsetOfInlineStorage()), regT0);
+ load32(BaseIndex(regT0, regT2, TimesEight, OBJECT_OFFSETOF(JSValue, u.asBits.tag)), regT1);
+ load32(BaseIndex(regT0, regT2, TimesEight, OBJECT_OFFSETOF(JSValue, u.asBits.payload)), regT0);
+
+ Jump done = jump();
+
+ // Otherwise it's out of line
+ outOfLineAccess.link(this);
+ loadPtr(Address(regT0, JSObject::butterflyOffset()), regT0);
+ sub32(Address(regT1, JSPropertyNameEnumerator::cachedInlineCapacityOffset()), regT2);
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);
+ int32_t offsetOfFirstProperty = static_cast<int32_t>(offsetInButterfly(firstOutOfLineOffset)) * sizeof(EncodedJSValue);
+ load32(BaseIndex(regT0, regT2, TimesEight, offsetOfFirstProperty + OBJECT_OFFSETOF(JSValue, u.asBits.tag)), regT1);
+ load32(BaseIndex(regT0, regT2, TimesEight, offsetOfFirstProperty + OBJECT_OFFSETOF(JSValue, u.asBits.payload)), regT0);
+
+ done.link(this);
+ emitValueProfilingSite();
emitStore(dst, regT1, regT0);
}
-void JIT::emitSlow_op_get_argument_by_val(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+void JIT::emitSlow_op_get_direct_pname(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
- unsigned dst = currentInstruction[1].u.operand;
- unsigned arguments = currentInstruction[2].u.operand;
- unsigned property = currentInstruction[3].u.operand;
-
+ int base = currentInstruction[2].u.operand;
+ linkSlowCaseIfNotJSCell(iter, base);
linkSlowCase(iter);
- Jump skipArgumentsCreation = jump();
- linkSlowCase(iter);
- linkSlowCase(iter);
- JITStubCall(this, cti_op_create_arguments).call();
- emitStore(arguments, regT1, regT0);
- emitStore(unmodifiedArgumentsRegister(arguments), regT1, regT0);
+ JITSlowPathCall slowPathCall(this, currentInstruction, slow_path_get_direct_pname);
+ slowPathCall.call();
+}
+
+void JIT::emit_op_enumerator_structure_pname(Instruction* currentInstruction)
+{
+ int dst = currentInstruction[1].u.operand;
+ int enumerator = currentInstruction[2].u.operand;
+ int index = currentInstruction[3].u.operand;
+
+ emitLoadPayload(index, regT0);
+ emitLoadPayload(enumerator, regT1);
+ Jump inBounds = branch32(Below, regT0, Address(regT1, JSPropertyNameEnumerator::endStructurePropertyIndexOffset()));
+
+ move(TrustedImm32(JSValue::NullTag), regT2);
+ move(TrustedImm32(0), regT0);
+
+ Jump done = jump();
+ inBounds.link(this);
+
+ loadPtr(Address(regT1, JSPropertyNameEnumerator::cachedPropertyNamesVectorOffset()), regT1);
+ loadPtr(BaseIndex(regT1, regT0, timesPtr()), regT0);
+ move(TrustedImm32(JSValue::CellTag), regT2);
+
+ done.link(this);
+ emitStore(dst, regT2, regT0);
+}
+
+void JIT::emit_op_enumerator_generic_pname(Instruction* currentInstruction)
+{
+ int dst = currentInstruction[1].u.operand;
+ int enumerator = currentInstruction[2].u.operand;
+ int index = currentInstruction[3].u.operand;
+
+ emitLoadPayload(index, regT0);
+ emitLoadPayload(enumerator, regT1);
+ Jump inBounds = branch32(Below, regT0, Address(regT1, JSPropertyNameEnumerator::endGenericPropertyIndexOffset()));
+
+ move(TrustedImm32(JSValue::NullTag), regT2);
+ move(TrustedImm32(0), regT0);
+
+ Jump done = jump();
+ inBounds.link(this);
+
+ loadPtr(Address(regT1, JSPropertyNameEnumerator::cachedPropertyNamesVectorOffset()), regT1);
+ loadPtr(BaseIndex(regT1, regT0, timesPtr()), regT0);
+ move(TrustedImm32(JSValue::CellTag), regT2);
- skipArgumentsCreation.link(this);
- JITStubCall stubCall(this, cti_op_get_by_val);
- stubCall.addArgument(arguments);
- stubCall.addArgument(property);
- stubCall.call(dst);
+ done.link(this);
+ emitStore(dst, regT2, regT0);
+}
+
+void JIT::emit_op_profile_type(Instruction* currentInstruction)
+{
+ TypeLocation* cachedTypeLocation = currentInstruction[2].u.location;
+ int valueToProfile = currentInstruction[1].u.operand;
+
+ // Load payload in T0. Load tag in T3.
+ emitLoadPayload(valueToProfile, regT0);
+ emitLoadTag(valueToProfile, regT3);
+
+ JumpList jumpToEnd;
+
+ // Compile in a predictive type check, if possible, to see if we can skip writing to the log.
+ // These typechecks are inlined to match those of the 32-bit JSValue type checks.
+ if (cachedTypeLocation->m_lastSeenType == TypeUndefined)
+ jumpToEnd.append(branch32(Equal, regT3, TrustedImm32(JSValue::UndefinedTag)));
+ else if (cachedTypeLocation->m_lastSeenType == TypeNull)
+ jumpToEnd.append(branch32(Equal, regT3, TrustedImm32(JSValue::NullTag)));
+ else if (cachedTypeLocation->m_lastSeenType == TypeBoolean)
+ jumpToEnd.append(branch32(Equal, regT3, TrustedImm32(JSValue::BooleanTag)));
+ else if (cachedTypeLocation->m_lastSeenType == TypeMachineInt)
+ jumpToEnd.append(branch32(Equal, regT3, TrustedImm32(JSValue::Int32Tag)));
+ else if (cachedTypeLocation->m_lastSeenType == TypeNumber) {
+ jumpToEnd.append(branch32(Below, regT3, TrustedImm32(JSValue::LowestTag)));
+ jumpToEnd.append(branch32(Equal, regT3, TrustedImm32(JSValue::Int32Tag)));
+ } else if (cachedTypeLocation->m_lastSeenType == TypeString) {
+ Jump isNotCell = branch32(NotEqual, regT3, TrustedImm32(JSValue::CellTag));
+ jumpToEnd.append(branch8(Equal, Address(regT0, JSCell::typeInfoTypeOffset()), TrustedImm32(StringType)));
+ isNotCell.link(this);
+ }
+
+ // Load the type profiling log into T2.
+ TypeProfilerLog* cachedTypeProfilerLog = m_vm->typeProfilerLog();
+ move(TrustedImmPtr(cachedTypeProfilerLog), regT2);
+
+ // Load the next log entry into T1.
+ loadPtr(Address(regT2, TypeProfilerLog::currentLogEntryOffset()), regT1);
+
+ // Store the JSValue onto the log entry.
+ store32(regT0, Address(regT1, TypeProfilerLog::LogEntry::valueOffset() + OBJECT_OFFSETOF(JSValue, u.asBits.payload)));
+ store32(regT3, Address(regT1, TypeProfilerLog::LogEntry::valueOffset() + OBJECT_OFFSETOF(JSValue, u.asBits.tag)));
+
+ // Store the structureID of the cell if argument is a cell, otherwise, store 0 on the log entry.
+ Jump notCell = branch32(NotEqual, regT3, TrustedImm32(JSValue::CellTag));
+ load32(Address(regT0, JSCell::structureIDOffset()), regT0);
+ store32(regT0, Address(regT1, TypeProfilerLog::LogEntry::structureIDOffset()));
+ Jump skipNotCell = jump();
+ notCell.link(this);
+ store32(TrustedImm32(0), Address(regT1, TypeProfilerLog::LogEntry::structureIDOffset()));
+ skipNotCell.link(this);
+
+ // Store the typeLocation on the log entry.
+ move(TrustedImmPtr(cachedTypeLocation), regT0);
+ store32(regT0, Address(regT1, TypeProfilerLog::LogEntry::locationOffset()));
+
+ // Increment the current log entry.
+ addPtr(TrustedImm32(sizeof(TypeProfilerLog::LogEntry)), regT1);
+ store32(regT1, Address(regT2, TypeProfilerLog::currentLogEntryOffset()));
+ jumpToEnd.append(branchPtr(NotEqual, regT1, TrustedImmPtr(cachedTypeProfilerLog->logEndPtr())));
+ // Clear the log if we're at the end of the log.
+ callOperation(operationProcessTypeProfilerLog);
+
+ jumpToEnd.link(this);
}
} // namespace JSC
projects / apple / javascriptcore.git / blobdiff