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1128 lines (944 loc) · 41.2 KB
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/*
* Copyright (C) 2008, 2012, 2013 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef JITInlines_h
#define JITInlines_h
#if ENABLE(JIT)
#include "CallFrameInlines.h"
namespace JSC {
ALWAYS_INLINE bool JIT::isOperandConstantImmediateDouble(int src)
{
return m_codeBlock->isConstantRegisterIndex(src) && getConstantOperand(src).isDouble();
}
ALWAYS_INLINE JSValue JIT::getConstantOperand(int src)
{
ASSERT(m_codeBlock->isConstantRegisterIndex(src));
return m_codeBlock->getConstant(src);
}
ALWAYS_INLINE void JIT::emitPutIntToCallFrameHeader(RegisterID from, JSStack::CallFrameHeaderEntry entry)
{
#if USE(JSVALUE32_64)
store32(TrustedImm32(Int32Tag), intTagFor(entry, callFrameRegister));
store32(from, intPayloadFor(entry, callFrameRegister));
#else
store64(from, addressFor(entry, callFrameRegister));
#endif
}
ALWAYS_INLINE void JIT::emitGetFromCallFrameHeaderPtr(JSStack::CallFrameHeaderEntry entry, RegisterID to, RegisterID from)
{
loadPtr(Address(from, entry * sizeof(Register)), to);
}
ALWAYS_INLINE void JIT::emitGetFromCallFrameHeader32(JSStack::CallFrameHeaderEntry entry, RegisterID to, RegisterID from)
{
load32(Address(from, entry * sizeof(Register)), to);
}
#if USE(JSVALUE64)
ALWAYS_INLINE void JIT::emitGetFromCallFrameHeader64(JSStack::CallFrameHeaderEntry entry, RegisterID to, RegisterID from)
{
load64(Address(from, entry * sizeof(Register)), to);
}
#endif
ALWAYS_INLINE void JIT::emitLoadCharacterString(RegisterID src, RegisterID dst, JumpList& failures)
{
failures.append(branchPtr(NotEqual, Address(src, JSCell::structureOffset()), TrustedImmPtr(m_vm->stringStructure.get())));
failures.append(branch32(NotEqual, MacroAssembler::Address(src, ThunkHelpers::jsStringLengthOffset()), TrustedImm32(1)));
loadPtr(MacroAssembler::Address(src, ThunkHelpers::jsStringValueOffset()), dst);
failures.append(branchTest32(Zero, dst));
loadPtr(MacroAssembler::Address(dst, StringImpl::flagsOffset()), regT1);
loadPtr(MacroAssembler::Address(dst, StringImpl::dataOffset()), dst);
JumpList is16Bit;
JumpList cont8Bit;
is16Bit.append(branchTest32(Zero, regT1, TrustedImm32(StringImpl::flagIs8Bit())));
load8(MacroAssembler::Address(dst, 0), dst);
cont8Bit.append(jump());
is16Bit.link(this);
load16(MacroAssembler::Address(dst, 0), dst);
cont8Bit.link(this);
}
ALWAYS_INLINE JIT::Call JIT::emitNakedCall(CodePtr function)
{
ASSERT(m_bytecodeOffset != (unsigned)-1); // This method should only be called during hot/cold path generation, so that m_bytecodeOffset is set.
Call nakedCall = nearCall();
m_calls.append(CallRecord(nakedCall, m_bytecodeOffset, function.executableAddress()));
return nakedCall;
}
ALWAYS_INLINE void JIT::updateTopCallFrame()
{
ASSERT(static_cast<int>(m_bytecodeOffset) >= 0);
#if USE(JSVALUE32_64)
Instruction* instruction = m_codeBlock->instructions().begin() + m_bytecodeOffset + 1;
uint32_t locationBits = CallFrame::Location::encodeAsBytecodeInstruction(instruction);
#else
uint32_t locationBits = CallFrame::Location::encodeAsBytecodeOffset(m_bytecodeOffset + 1);
#endif
store32(TrustedImm32(locationBits), intTagFor(JSStack::ArgumentCount));
storePtr(callFrameRegister, &m_vm->topCallFrame);
}
ALWAYS_INLINE MacroAssembler::Call JIT::appendCallWithExceptionCheck(const FunctionPtr& function)
{
updateTopCallFrame();
MacroAssembler::Call call = appendCall(function);
exceptionCheck();
return call;
}
ALWAYS_INLINE MacroAssembler::Call JIT::appendCallWithCallFrameRollbackOnException(const FunctionPtr& function)
{
updateTopCallFrame(); // The callee is responsible for setting topCallFrame to their caller
MacroAssembler::Call call = appendCall(function);
exceptionCheckWithCallFrameRollback();
return call;
}
ALWAYS_INLINE MacroAssembler::Call JIT::appendCallWithExceptionCheckSetJSValueResult(const FunctionPtr& function, int dst)
{
MacroAssembler::Call call = appendCallWithExceptionCheck(function);
#if USE(JSVALUE64)
emitPutVirtualRegister(dst, returnValueGPR);
#else
emitStore(dst, returnValueGPR2, returnValueGPR);
#endif
return call;
}
ALWAYS_INLINE MacroAssembler::Call JIT::appendCallWithExceptionCheckSetJSValueResultWithProfile(const FunctionPtr& function, int dst)
{
MacroAssembler::Call call = appendCallWithExceptionCheck(function);
emitValueProfilingSite(regT4);
#if USE(JSVALUE64)
emitPutVirtualRegister(dst, returnValueGPR);
#else
emitStore(dst, returnValueGPR2, returnValueGPR);
#endif
return call;
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(C_JITOperation_E operation)
{
setupArgumentsExecState();
return appendCallWithExceptionCheck(operation);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(C_JITOperation_EO operation, GPRReg arg)
{
setupArgumentsWithExecState(arg);
return appendCallWithExceptionCheck(operation);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(C_JITOperation_ESt operation, Structure* structure)
{
setupArgumentsWithExecState(TrustedImmPtr(structure));
return appendCallWithExceptionCheck(operation);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(C_JITOperation_EZ operation, int32_t arg)
{
setupArgumentsWithExecState(TrustedImm32(arg));
return appendCallWithExceptionCheck(operation);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(J_JITOperation_E operation, int dst)
{
setupArgumentsExecState();
return appendCallWithExceptionCheckSetJSValueResult(operation, dst);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(J_JITOperation_EAapJcpZ operation, int dst, ArrayAllocationProfile* arg1, GPRReg arg2, int32_t arg3)
{
setupArgumentsWithExecState(TrustedImmPtr(arg1), arg2, TrustedImm32(arg3));
return appendCallWithExceptionCheckSetJSValueResult(operation, dst);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(J_JITOperation_EAapJcpZ operation, int dst, ArrayAllocationProfile* arg1, const JSValue* arg2, int32_t arg3)
{
setupArgumentsWithExecState(TrustedImmPtr(arg1), TrustedImmPtr(arg2), TrustedImm32(arg3));
return appendCallWithExceptionCheckSetJSValueResult(operation, dst);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(J_JITOperation_EC operation, int dst, JSCell* cell)
{
setupArgumentsWithExecState(TrustedImmPtr(cell));
return appendCallWithExceptionCheckSetJSValueResult(operation, dst);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(V_JITOperation_EC operation, JSCell* cell)
{
setupArgumentsWithExecState(TrustedImmPtr(cell));
return appendCallWithExceptionCheck(operation);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(J_JITOperation_EP operation, int dst, void* pointer)
{
setupArgumentsWithExecState(TrustedImmPtr(pointer));
return appendCallWithExceptionCheckSetJSValueResult(operation, dst);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(WithProfileTag, J_JITOperation_EPc operation, int dst, Instruction* bytecodePC)
{
setupArgumentsWithExecState(TrustedImmPtr(bytecodePC));
return appendCallWithExceptionCheckSetJSValueResultWithProfile(operation, dst);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(J_JITOperation_EZ operation, int dst, int32_t arg)
{
setupArgumentsWithExecState(TrustedImm32(arg));
return appendCallWithExceptionCheckSetJSValueResult(operation, dst);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(P_JITOperation_EZ operation, int32_t op)
{
setupArgumentsWithExecState(TrustedImm32(op));
return appendCallWithExceptionCheck(operation);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(S_JITOperation_ECC operation, RegisterID regOp1, RegisterID regOp2)
{
setupArgumentsWithExecState(regOp1, regOp2);
return appendCallWithExceptionCheck(operation);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(S_JITOperation_EOJss operation, RegisterID regOp1, RegisterID regOp2)
{
setupArgumentsWithExecState(regOp1, regOp2);
return appendCallWithExceptionCheck(operation);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(V_JITOperation_E operation)
{
setupArgumentsExecState();
return appendCallWithExceptionCheck(operation);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(V_JITOperation_EC operation, RegisterID regOp)
{
setupArgumentsWithExecState(regOp);
return appendCallWithExceptionCheck(operation);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(V_JITOperation_ECC operation, RegisterID regOp1, RegisterID regOp2)
{
setupArgumentsWithExecState(regOp1, regOp2);
return appendCallWithExceptionCheck(operation);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(V_JITOperation_EPc operation, Instruction* bytecodePC)
{
setupArgumentsWithExecState(TrustedImmPtr(bytecodePC));
return appendCallWithExceptionCheck(operation);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(V_JITOperation_EZ operation, int32_t op)
{
setupArgumentsWithExecState(TrustedImm32(op));
return appendCallWithExceptionCheck(operation);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperationWithCallFrameRollbackOnException(J_JITOperation_E operation)
{
setupArgumentsExecState();
return appendCallWithCallFrameRollbackOnException(operation);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperationWithCallFrameRollbackOnException(V_JITOperation_ECb operation, CodeBlock* pointer)
{
setupArgumentsWithExecState(TrustedImmPtr(pointer));
return appendCallWithCallFrameRollbackOnException(operation);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperationWithCallFrameRollbackOnException(Z_JITOperation_E operation)
{
setupArgumentsExecState();
return appendCallWithCallFrameRollbackOnException(operation);
}
#if USE(JSVALUE64)
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(F_JITOperation_EJZ operation, GPRReg arg1, int32_t arg3)
{
setupArgumentsWithExecState(arg1, TrustedImm32(arg3));
return appendCallWithExceptionCheck(operation);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(F_JITOperation_EFJJ operation, GPRReg arg1, GPRReg arg2, GPRReg arg3)
{
setupArgumentsWithExecState(arg1, arg2, arg3);
return appendCallWithExceptionCheck(operation);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(V_JITOperation_ESsiJJI operation, StructureStubInfo* stubInfo, RegisterID regOp1, RegisterID regOp2, StringImpl* uid)
{
setupArgumentsWithExecState(TrustedImmPtr(stubInfo), regOp1, regOp2, TrustedImmPtr(uid));
return appendCallWithExceptionCheck(operation);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(V_JITOperation_EJJJ operation, RegisterID regOp1, RegisterID regOp2, RegisterID regOp3)
{
setupArgumentsWithExecState(regOp1, regOp2, regOp3);
return appendCallWithExceptionCheck(operation);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(JIT::WithProfileTag, J_JITOperation_ESsiJI operation, int dst, StructureStubInfo* stubInfo, GPRReg arg1, StringImpl* uid)
{
setupArgumentsWithExecState(TrustedImmPtr(stubInfo), arg1, TrustedImmPtr(uid));
return appendCallWithExceptionCheckSetJSValueResultWithProfile(operation, dst);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(JIT::WithProfileTag, J_JITOperation_EJJ operation, int dst, GPRReg arg1, GPRReg arg2)
{
setupArgumentsWithExecState(arg1, arg2);
return appendCallWithExceptionCheckSetJSValueResultWithProfile(operation, dst);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(J_JITOperation_EAapJ operation, int dst, ArrayAllocationProfile* arg1, GPRReg arg2)
{
setupArgumentsWithExecState(TrustedImmPtr(arg1), arg2);
return appendCallWithExceptionCheckSetJSValueResult(operation, dst);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(J_JITOperation_EJ operation, int dst, GPRReg arg1)
{
setupArgumentsWithExecState(arg1);
return appendCallWithExceptionCheckSetJSValueResult(operation, dst);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(J_JITOperation_EJIdc operation, int dst, GPRReg arg1, const Identifier* arg2)
{
setupArgumentsWithExecState(arg1, TrustedImmPtr(arg2));
return appendCallWithExceptionCheckSetJSValueResult(operation, dst);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(J_JITOperation_EJJ operation, int dst, GPRReg arg1, GPRReg arg2)
{
setupArgumentsWithExecState(arg1, arg2);
return appendCallWithExceptionCheckSetJSValueResult(operation, dst);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperationNoExceptionCheck(V_JITOperation_EJ operation, GPRReg arg1)
{
setupArgumentsWithExecState(arg1);
updateTopCallFrame();
return appendCall(operation);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(P_JITOperation_EJS operation, GPRReg arg1, size_t arg2)
{
setupArgumentsWithExecState(arg1, TrustedImmPtr(arg2));
return appendCallWithExceptionCheck(operation);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(S_JITOperation_EJ operation, RegisterID regOp)
{
setupArgumentsWithExecState(regOp);
return appendCallWithExceptionCheck(operation);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(S_JITOperation_EJJ operation, RegisterID regOp1, RegisterID regOp2)
{
setupArgumentsWithExecState(regOp1, regOp2);
return appendCallWithExceptionCheck(operation);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(V_JITOperation_EIdJZ operation, const Identifier* identOp1, RegisterID regOp2, int32_t op3)
{
setupArgumentsWithExecState(TrustedImmPtr(identOp1), regOp2, TrustedImm32(op3));
return appendCallWithExceptionCheck(operation);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(V_JITOperation_EJ operation, RegisterID regOp)
{
setupArgumentsWithExecState(regOp);
return appendCallWithExceptionCheck(operation);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(V_JITOperation_EJIdJJ operation, RegisterID regOp1, const Identifier* identOp2, RegisterID regOp3, RegisterID regOp4)
{
setupArgumentsWithExecState(regOp1, TrustedImmPtr(identOp2), regOp3, regOp4);
return appendCallWithExceptionCheck(operation);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(V_JITOperation_EJZ operation, RegisterID regOp1, int32_t op2)
{
setupArgumentsWithExecState(regOp1, TrustedImm32(op2));
return appendCallWithExceptionCheck(operation);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(V_JITOperation_EJZJ operation, RegisterID regOp1, int32_t op2, RegisterID regOp3)
{
setupArgumentsWithExecState(regOp1, TrustedImm32(op2), regOp3);
return appendCallWithExceptionCheck(operation);
}
#else // USE(JSVALUE32_64)
// EncodedJSValue in JSVALUE32_64 is a 64-bit integer. When being compiled in ARM EABI, it must be aligned even-numbered register (r0, r2 or [sp]).
// To avoid assemblies from using wrong registers, let's occupy r1 or r3 with a dummy argument when necessary.
#if (COMPILER_SUPPORTS(EABI) && CPU(ARM)) || CPU(MIPS)
#define EABI_32BIT_DUMMY_ARG TrustedImm32(0),
#else
#define EABI_32BIT_DUMMY_ARG
#endif
// JSVALUE32_64 is a 64-bit integer that cannot be put half in an argument register and half on stack when using SH4 architecture.
// To avoid this, let's occupy the 4th argument register (r7) with a dummy argument when necessary. This must only be done when there
// is no other 32-bit value argument behind this 64-bit JSValue.
#if CPU(SH4)
#define SH4_32BIT_DUMMY_ARG TrustedImm32(0),
#else
#define SH4_32BIT_DUMMY_ARG
#endif
ALWAYS_INLINE MacroAssembler::Call JIT::callOperationNoExceptionCheck(V_JITOperation_EJ operation, GPRReg arg1Tag, GPRReg arg1Payload)
{
setupArgumentsWithExecState(EABI_32BIT_DUMMY_ARG arg1Payload, arg1Tag);
updateTopCallFrame();
return appendCall(operation);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(F_JITOperation_EJZ operation, GPRReg arg1Tag, GPRReg arg1Payload, int32_t arg2)
{
#if CPU(SH4)
// We have to put arg3 in the 4th argument register (r7) as 64-bit value arg2 will be put on stack for sh4 architecure.
setupArgumentsWithExecState(arg1Payload, arg1Tag, TrustedImm32(arg2));
#else
setupArgumentsWithExecState(EABI_32BIT_DUMMY_ARG arg1Payload, arg1Tag, TrustedImm32(arg2));
#endif
return appendCallWithExceptionCheck(operation);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(F_JITOperation_EFJJ operation, GPRReg arg1, GPRReg arg2Tag, GPRReg arg2Payload, GPRReg arg3Tag, GPRReg arg3Payload)
{
setupArgumentsWithExecState(arg1, arg2Payload, arg2Tag, arg3Payload, arg3Tag);
return appendCallWithExceptionCheck(operation);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(J_JITOperation_EAapJ operation, int dst, ArrayAllocationProfile* arg1, GPRReg arg2Tag, GPRReg arg2Payload)
{
setupArgumentsWithExecState(TrustedImmPtr(arg1), arg2Payload, arg2Tag);
return appendCallWithExceptionCheckSetJSValueResult(operation, dst);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(J_JITOperation_EJ operation, int dst, GPRReg arg1Tag, GPRReg arg1Payload)
{
setupArgumentsWithExecState(EABI_32BIT_DUMMY_ARG arg1Payload, arg1Tag);
return appendCallWithExceptionCheckSetJSValueResult(operation, dst);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(JIT::WithProfileTag, J_JITOperation_ESsiJI operation, int dst, StructureStubInfo* stubInfo, GPRReg arg1Tag, GPRReg arg1Payload, StringImpl* uid)
{
setupArgumentsWithExecState(TrustedImmPtr(stubInfo), arg1Payload, arg1Tag, TrustedImmPtr(uid));
return appendCallWithExceptionCheckSetJSValueResultWithProfile(operation, dst);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(J_JITOperation_EJIdc operation, int dst, GPRReg arg1Tag, GPRReg arg1Payload, const Identifier* arg2)
{
setupArgumentsWithExecState(EABI_32BIT_DUMMY_ARG arg1Payload, arg1Tag, TrustedImmPtr(arg2));
return appendCallWithExceptionCheckSetJSValueResult(operation, dst);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(J_JITOperation_EJJ operation, int dst, GPRReg arg1Tag, GPRReg arg1Payload, GPRReg arg2Tag, GPRReg arg2Payload)
{
setupArgumentsWithExecState(EABI_32BIT_DUMMY_ARG arg1Payload, arg1Tag, SH4_32BIT_DUMMY_ARG arg2Payload, arg2Tag);
return appendCallWithExceptionCheckSetJSValueResult(operation, dst);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(JIT::WithProfileTag, J_JITOperation_EJJ operation, int dst, GPRReg arg1Tag, GPRReg arg1Payload, GPRReg arg2Tag, GPRReg arg2Payload)
{
setupArgumentsWithExecState(EABI_32BIT_DUMMY_ARG arg1Payload, arg1Tag, SH4_32BIT_DUMMY_ARG arg2Payload, arg2Tag);
return appendCallWithExceptionCheckSetJSValueResultWithProfile(operation, dst);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(P_JITOperation_EJS operation, GPRReg arg1Tag, GPRReg arg1Payload, size_t arg2)
{
setupArgumentsWithExecState(EABI_32BIT_DUMMY_ARG arg1Payload, arg1Tag, TrustedImmPtr(arg2));
return appendCallWithExceptionCheck(operation);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(S_JITOperation_EJ operation, RegisterID argTag, RegisterID argPayload)
{
setupArgumentsWithExecState(EABI_32BIT_DUMMY_ARG argPayload, argTag);
return appendCallWithExceptionCheck(operation);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(S_JITOperation_EJJ operation, RegisterID arg1Tag, RegisterID arg1Payload, RegisterID arg2Tag, RegisterID arg2Payload)
{
setupArgumentsWithExecState(EABI_32BIT_DUMMY_ARG arg1Payload, arg1Tag, SH4_32BIT_DUMMY_ARG arg2Payload, arg2Tag);
return appendCallWithExceptionCheck(operation);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(V_JITOperation_ECICC operation, RegisterID regOp1, const Identifier* identOp2, RegisterID regOp3, RegisterID regOp4)
{
setupArgumentsWithExecState(regOp1, TrustedImmPtr(identOp2), regOp3, regOp4);
return appendCallWithExceptionCheck(operation);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(V_JITOperation_EJ operation, RegisterID regOp1Tag, RegisterID regOp1Payload)
{
setupArgumentsWithExecState(EABI_32BIT_DUMMY_ARG regOp1Payload, regOp1Tag);
return appendCallWithExceptionCheck(operation);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(V_JITOperation_EIdJZ operation, const Identifier* identOp1, RegisterID regOp2Tag, RegisterID regOp2Payload, int32_t op3)
{
setupArgumentsWithExecState(TrustedImmPtr(identOp1), regOp2Payload, regOp2Tag, TrustedImm32(op3));
return appendCallWithExceptionCheck(operation);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(V_JITOperation_ESsiJJI operation, StructureStubInfo* stubInfo, RegisterID regOp1Tag, RegisterID regOp1Payload, RegisterID regOp2Tag, RegisterID regOp2Payload, StringImpl* uid)
{
setupArgumentsWithExecState(TrustedImmPtr(stubInfo), regOp1Payload, regOp1Tag, regOp2Payload, regOp2Tag, TrustedImmPtr(uid));
return appendCallWithExceptionCheck(operation);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(V_JITOperation_EJJJ operation, RegisterID regOp1Tag, RegisterID regOp1Payload, RegisterID regOp2Tag, RegisterID regOp2Payload, RegisterID regOp3Tag, RegisterID regOp3Payload)
{
setupArgumentsWithExecState(EABI_32BIT_DUMMY_ARG regOp1Payload, regOp1Tag, SH4_32BIT_DUMMY_ARG regOp2Payload, regOp2Tag, regOp3Payload, regOp3Tag);
return appendCallWithExceptionCheck(operation);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(V_JITOperation_EJZ operation, RegisterID regOp1Tag, RegisterID regOp1Payload, int32_t op2)
{
setupArgumentsWithExecState(EABI_32BIT_DUMMY_ARG regOp1Payload, regOp1Tag, TrustedImm32(op2));
return appendCallWithExceptionCheck(operation);
}
ALWAYS_INLINE MacroAssembler::Call JIT::callOperation(V_JITOperation_EJZJ operation, RegisterID regOp1Tag, RegisterID regOp1Payload, int32_t op2, RegisterID regOp3Tag, RegisterID regOp3Payload)
{
setupArgumentsWithExecState(EABI_32BIT_DUMMY_ARG regOp1Payload, regOp1Tag, TrustedImm32(op2), EABI_32BIT_DUMMY_ARG regOp3Payload, regOp3Tag);
return appendCallWithExceptionCheck(operation);
}
#undef EABI_32BIT_DUMMY_ARG
#undef SH4_32BIT_DUMMY_ARG
#endif // USE(JSVALUE32_64)
ALWAYS_INLINE JIT::Jump JIT::checkStructure(RegisterID reg, Structure* structure)
{
return branchPtr(NotEqual, Address(reg, JSCell::structureOffset()), TrustedImmPtr(structure));
}
ALWAYS_INLINE void JIT::linkSlowCaseIfNotJSCell(Vector<SlowCaseEntry>::iterator& iter, int vReg)
{
if (!m_codeBlock->isKnownNotImmediate(vReg))
linkSlowCase(iter);
}
ALWAYS_INLINE void JIT::addSlowCase(Jump jump)
{
ASSERT(m_bytecodeOffset != (unsigned)-1); // This method should only be called during hot/cold path generation, so that m_bytecodeOffset is set.
m_slowCases.append(SlowCaseEntry(jump, m_bytecodeOffset));
}
ALWAYS_INLINE void JIT::addSlowCase(JumpList jumpList)
{
ASSERT(m_bytecodeOffset != (unsigned)-1); // This method should only be called during hot/cold path generation, so that m_bytecodeOffset is set.
const JumpList::JumpVector& jumpVector = jumpList.jumps();
size_t size = jumpVector.size();
for (size_t i = 0; i < size; ++i)
m_slowCases.append(SlowCaseEntry(jumpVector[i], m_bytecodeOffset));
}
ALWAYS_INLINE void JIT::addSlowCase()
{
ASSERT(m_bytecodeOffset != (unsigned)-1); // This method should only be called during hot/cold path generation, so that m_bytecodeOffset is set.
Jump emptyJump; // Doing it this way to make Windows happy.
m_slowCases.append(SlowCaseEntry(emptyJump, m_bytecodeOffset));
}
ALWAYS_INLINE void JIT::addJump(Jump jump, int relativeOffset)
{
ASSERT(m_bytecodeOffset != (unsigned)-1); // This method should only be called during hot/cold path generation, so that m_bytecodeOffset is set.
m_jmpTable.append(JumpTable(jump, m_bytecodeOffset + relativeOffset));
}
ALWAYS_INLINE void JIT::emitJumpSlowToHot(Jump jump, int relativeOffset)
{
ASSERT(m_bytecodeOffset != (unsigned)-1); // This method should only be called during hot/cold path generation, so that m_bytecodeOffset is set.
jump.linkTo(m_labels[m_bytecodeOffset + relativeOffset], this);
}
ALWAYS_INLINE JIT::Jump JIT::emitJumpIfNotObject(RegisterID structureReg)
{
return branch8(Below, Address(structureReg, Structure::typeInfoTypeOffset()), TrustedImm32(ObjectType));
}
#if ENABLE(SAMPLING_FLAGS)
ALWAYS_INLINE void JIT::setSamplingFlag(int32_t flag)
{
ASSERT(flag >= 1);
ASSERT(flag <= 32);
or32(TrustedImm32(1u << (flag - 1)), AbsoluteAddress(SamplingFlags::addressOfFlags()));
}
ALWAYS_INLINE void JIT::clearSamplingFlag(int32_t flag)
{
ASSERT(flag >= 1);
ASSERT(flag <= 32);
and32(TrustedImm32(~(1u << (flag - 1))), AbsoluteAddress(SamplingFlags::addressOfFlags()));
}
#endif
#if ENABLE(SAMPLING_COUNTERS)
ALWAYS_INLINE void JIT::emitCount(AbstractSamplingCounter& counter, int32_t count)
{
add64(TrustedImm32(count), AbsoluteAddress(counter.addressOfCounter()));
}
#endif
#if ENABLE(OPCODE_SAMPLING)
#if CPU(X86_64)
ALWAYS_INLINE void JIT::sampleInstruction(Instruction* instruction, bool inHostFunction)
{
move(TrustedImmPtr(m_interpreter->sampler()->sampleSlot()), X86Registers::ecx);
storePtr(TrustedImmPtr(m_interpreter->sampler()->encodeSample(instruction, inHostFunction)), X86Registers::ecx);
}
#else
ALWAYS_INLINE void JIT::sampleInstruction(Instruction* instruction, bool inHostFunction)
{
storePtr(TrustedImmPtr(m_interpreter->sampler()->encodeSample(instruction, inHostFunction)), m_interpreter->sampler()->sampleSlot());
}
#endif
#endif
#if ENABLE(CODEBLOCK_SAMPLING)
#if CPU(X86_64)
ALWAYS_INLINE void JIT::sampleCodeBlock(CodeBlock* codeBlock)
{
move(TrustedImmPtr(m_interpreter->sampler()->codeBlockSlot()), X86Registers::ecx);
storePtr(TrustedImmPtr(codeBlock), X86Registers::ecx);
}
#else
ALWAYS_INLINE void JIT::sampleCodeBlock(CodeBlock* codeBlock)
{
storePtr(TrustedImmPtr(codeBlock), m_interpreter->sampler()->codeBlockSlot());
}
#endif
#endif
ALWAYS_INLINE bool JIT::isOperandConstantImmediateChar(int src)
{
return m_codeBlock->isConstantRegisterIndex(src) && getConstantOperand(src).isString() && asString(getConstantOperand(src).asCell())->length() == 1;
}
template<typename StructureType>
inline void JIT::emitAllocateJSObject(RegisterID allocator, StructureType structure, RegisterID result, RegisterID scratch)
{
loadPtr(Address(allocator, MarkedAllocator::offsetOfFreeListHead()), result);
addSlowCase(branchTestPtr(Zero, result));
// remove the object from the free list
loadPtr(Address(result), scratch);
storePtr(scratch, Address(allocator, MarkedAllocator::offsetOfFreeListHead()));
// initialize the object's structure
storePtr(structure, Address(result, JSCell::structureOffset()));
// initialize the object's property storage pointer
storePtr(TrustedImmPtr(0), Address(result, JSObject::butterflyOffset()));
}
#if ENABLE(VALUE_PROFILER)
inline void JIT::emitValueProfilingSite(ValueProfile* valueProfile, RegisterID bucketCounterRegister)
{
ASSERT(shouldEmitProfiling());
ASSERT(valueProfile);
const RegisterID value = regT0;
#if USE(JSVALUE32_64)
const RegisterID valueTag = regT1;
#endif
const RegisterID scratch = regT3;
if (ValueProfile::numberOfBuckets == 1) {
// We're in a simple configuration: only one bucket, so we can just do a direct
// store.
#if USE(JSVALUE64)
store64(value, valueProfile->m_buckets);
#else
EncodedValueDescriptor* descriptor = bitwise_cast<EncodedValueDescriptor*>(valueProfile->m_buckets);
store32(value, &descriptor->asBits.payload);
store32(valueTag, &descriptor->asBits.tag);
#endif
return;
}
if (m_randomGenerator.getUint32() & 1)
add32(TrustedImm32(1), bucketCounterRegister);
else
add32(TrustedImm32(3), bucketCounterRegister);
and32(TrustedImm32(ValueProfile::bucketIndexMask), bucketCounterRegister);
move(TrustedImmPtr(valueProfile->m_buckets), scratch);
#if USE(JSVALUE64)
store64(value, BaseIndex(scratch, bucketCounterRegister, TimesEight));
#elif USE(JSVALUE32_64)
store32(value, BaseIndex(scratch, bucketCounterRegister, TimesEight, OBJECT_OFFSETOF(JSValue, u.asBits.payload)));
store32(valueTag, BaseIndex(scratch, bucketCounterRegister, TimesEight, OBJECT_OFFSETOF(JSValue, u.asBits.tag)));
#endif
}
inline void JIT::emitValueProfilingSite(unsigned bytecodeOffset, RegisterID bucketCounterRegister)
{
if (!shouldEmitProfiling())
return;
emitValueProfilingSite(m_codeBlock->valueProfileForBytecodeOffset(bytecodeOffset), bucketCounterRegister);
}
inline void JIT::emitValueProfilingSite(RegisterID bucketCounterRegister)
{
emitValueProfilingSite(m_bytecodeOffset, bucketCounterRegister);
}
#endif // ENABLE(VALUE_PROFILER)
inline void JIT::emitArrayProfilingSite(RegisterID structureAndIndexingType, RegisterID scratch, ArrayProfile* arrayProfile)
{
UNUSED_PARAM(scratch); // We had found this scratch register useful here before, so I will keep it for now.
RegisterID structure = structureAndIndexingType;
RegisterID indexingType = structureAndIndexingType;
if (shouldEmitProfiling())
storePtr(structure, arrayProfile->addressOfLastSeenStructure());
load8(Address(structure, Structure::indexingTypeOffset()), indexingType);
}
inline void JIT::emitArrayProfilingSiteForBytecodeIndex(RegisterID structureAndIndexingType, RegisterID scratch, unsigned bytecodeIndex)
{
#if ENABLE(VALUE_PROFILER)
emitArrayProfilingSite(structureAndIndexingType, scratch, m_codeBlock->getOrAddArrayProfile(bytecodeIndex));
#else
UNUSED_PARAM(bytecodeIndex);
emitArrayProfilingSite(structureAndIndexingType, scratch, 0);
#endif
}
inline void JIT::emitArrayProfileStoreToHoleSpecialCase(ArrayProfile* arrayProfile)
{
#if ENABLE(VALUE_PROFILER)
store8(TrustedImm32(1), arrayProfile->addressOfMayStoreToHole());
#else
UNUSED_PARAM(arrayProfile);
#endif
}
inline void JIT::emitArrayProfileOutOfBoundsSpecialCase(ArrayProfile* arrayProfile)
{
#if ENABLE(VALUE_PROFILER)
store8(TrustedImm32(1), arrayProfile->addressOfOutOfBounds());
#else
UNUSED_PARAM(arrayProfile);
#endif
}
static inline bool arrayProfileSaw(ArrayModes arrayModes, IndexingType capability)
{
#if ENABLE(VALUE_PROFILER)
return arrayModesInclude(arrayModes, capability);
#else
UNUSED_PARAM(arrayModes);
UNUSED_PARAM(capability);
return false;
#endif
}
inline JITArrayMode JIT::chooseArrayMode(ArrayProfile* profile)
{
#if ENABLE(VALUE_PROFILER)
ConcurrentJITLocker locker(m_codeBlock->m_lock);
profile->computeUpdatedPrediction(locker, m_codeBlock);
ArrayModes arrayModes = profile->observedArrayModes(locker);
if (arrayProfileSaw(arrayModes, DoubleShape))
return JITDouble;
if (arrayProfileSaw(arrayModes, Int32Shape))
return JITInt32;
if (arrayProfileSaw(arrayModes, ArrayStorageShape))
return JITArrayStorage;
return JITContiguous;
#else
UNUSED_PARAM(profile);
return JITContiguous;
#endif
}
#if USE(JSVALUE32_64)
inline void JIT::emitLoadTag(int index, RegisterID tag)
{
if (m_codeBlock->isConstantRegisterIndex(index)) {
move(Imm32(getConstantOperand(index).tag()), tag);
return;
}
load32(tagFor(index), tag);
}
inline void JIT::emitLoadPayload(int index, RegisterID payload)
{
if (m_codeBlock->isConstantRegisterIndex(index)) {
move(Imm32(getConstantOperand(index).payload()), payload);
return;
}
load32(payloadFor(index), payload);
}
inline void JIT::emitLoad(const JSValue& v, RegisterID tag, RegisterID payload)
{
move(Imm32(v.payload()), payload);
move(Imm32(v.tag()), tag);
}
inline void JIT::emitLoad(int index, RegisterID tag, RegisterID payload, RegisterID base)
{
RELEASE_ASSERT(tag != payload);
if (base == callFrameRegister) {
RELEASE_ASSERT(payload != base);
emitLoadPayload(index, payload);
emitLoadTag(index, tag);
return;
}
if (payload == base) { // avoid stomping base
load32(tagFor(index, base), tag);
load32(payloadFor(index, base), payload);
return;
}
load32(payloadFor(index, base), payload);
load32(tagFor(index, base), tag);
}
inline void JIT::emitLoad2(int index1, RegisterID tag1, RegisterID payload1, int index2, RegisterID tag2, RegisterID payload2)
{
emitLoad(index2, tag2, payload2);
emitLoad(index1, tag1, payload1);
}
inline void JIT::emitLoadDouble(int index, FPRegisterID value)
{
if (m_codeBlock->isConstantRegisterIndex(index)) {
WriteBarrier<Unknown>& inConstantPool = m_codeBlock->constantRegister(index);
loadDouble(&inConstantPool, value);
} else
loadDouble(addressFor(index), value);
}
inline void JIT::emitLoadInt32ToDouble(int index, FPRegisterID value)
{
if (m_codeBlock->isConstantRegisterIndex(index)) {
WriteBarrier<Unknown>& inConstantPool = m_codeBlock->constantRegister(index);
char* bytePointer = reinterpret_cast<char*>(&inConstantPool);
convertInt32ToDouble(AbsoluteAddress(bytePointer + OBJECT_OFFSETOF(JSValue, u.asBits.payload)), value);
} else
convertInt32ToDouble(payloadFor(index), value);
}
inline void JIT::emitStore(int index, RegisterID tag, RegisterID payload, RegisterID base)
{
store32(payload, payloadFor(index, base));
store32(tag, tagFor(index, base));
}
inline void JIT::emitStoreInt32(int index, RegisterID payload, bool indexIsInt32)
{
store32(payload, payloadFor(index, callFrameRegister));
if (!indexIsInt32)
store32(TrustedImm32(JSValue::Int32Tag), tagFor(index, callFrameRegister));
}
inline void JIT::emitStoreInt32(int index, TrustedImm32 payload, bool indexIsInt32)
{
store32(payload, payloadFor(index, callFrameRegister));
if (!indexIsInt32)
store32(TrustedImm32(JSValue::Int32Tag), tagFor(index, callFrameRegister));
}
inline void JIT::emitStoreCell(int index, RegisterID payload, bool indexIsCell)
{
store32(payload, payloadFor(index, callFrameRegister));
if (!indexIsCell)
store32(TrustedImm32(JSValue::CellTag), tagFor(index, callFrameRegister));
}
inline void JIT::emitStoreBool(int index, RegisterID payload, bool indexIsBool)
{
store32(payload, payloadFor(index, callFrameRegister));
if (!indexIsBool)
store32(TrustedImm32(JSValue::BooleanTag), tagFor(index, callFrameRegister));
}
inline void JIT::emitStoreDouble(int index, FPRegisterID value)
{
storeDouble(value, addressFor(index));
}
inline void JIT::emitStore(int index, const JSValue constant, RegisterID base)
{
store32(Imm32(constant.payload()), payloadFor(index, base));
store32(Imm32(constant.tag()), tagFor(index, base));
}
ALWAYS_INLINE void JIT::emitInitRegister(int dst)
{
emitStore(dst, jsUndefined());
}
inline void JIT::emitJumpSlowCaseIfNotJSCell(int virtualRegisterIndex)
{
if (!m_codeBlock->isKnownNotImmediate(virtualRegisterIndex)) {
if (m_codeBlock->isConstantRegisterIndex(virtualRegisterIndex))
addSlowCase(jump());
else
addSlowCase(emitJumpIfNotJSCell(virtualRegisterIndex));
}
}
inline void JIT::emitJumpSlowCaseIfNotJSCell(int virtualRegisterIndex, RegisterID tag)
{
if (!m_codeBlock->isKnownNotImmediate(virtualRegisterIndex)) {
if (m_codeBlock->isConstantRegisterIndex(virtualRegisterIndex))
addSlowCase(jump());
else
addSlowCase(branch32(NotEqual, tag, TrustedImm32(JSValue::CellTag)));
}
}
ALWAYS_INLINE bool JIT::isOperandConstantImmediateInt(int src)
{
return m_codeBlock->isConstantRegisterIndex(src) && getConstantOperand(src).isInt32();
}
ALWAYS_INLINE bool JIT::getOperandConstantImmediateInt(int op1, int op2, int& op, int32_t& constant)
{
if (isOperandConstantImmediateInt(op1)) {
constant = getConstantOperand(op1).asInt32();
op = op2;
return true;
}
if (isOperandConstantImmediateInt(op2)) {
constant = getConstantOperand(op2).asInt32();
op = op1;
return true;
}
return false;
}
#else // USE(JSVALUE32_64)
// get arg puts an arg from the SF register array into a h/w register
ALWAYS_INLINE void JIT::emitGetVirtualRegister(int src, RegisterID dst)
{
ASSERT(m_bytecodeOffset != (unsigned)-1); // This method should only be called during hot/cold path generation, so that m_bytecodeOffset is set.
// TODO: we want to reuse values that are already in registers if we can - add a register allocator!
if (m_codeBlock->isConstantRegisterIndex(src)) {
JSValue value = m_codeBlock->getConstant(src);
if (!value.isNumber())
move(TrustedImm64(JSValue::encode(value)), dst);
else
move(Imm64(JSValue::encode(value)), dst);
return;
}
load64(Address(callFrameRegister, src * sizeof(Register)), dst);
}
ALWAYS_INLINE void JIT::emitGetVirtualRegister(VirtualRegister src, RegisterID dst)
{
emitGetVirtualRegister(src.offset(), dst);
}
ALWAYS_INLINE void JIT::emitGetVirtualRegisters(int src1, RegisterID dst1, int src2, RegisterID dst2)
{
emitGetVirtualRegister(src1, dst1);
emitGetVirtualRegister(src2, dst2);