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1541 lines (1395 loc) · 56.2 KB
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/*
* Copyright (C) 2015 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 WASMFunctionCompiler_h
#define WASMFunctionCompiler_h
#if ENABLE(WEBASSEMBLY)
#include "BinarySwitch.h"
#include "CCallHelpers.h"
#include "JIT.h"
#include "JITOperations.h"
#include "JSArrayBuffer.h"
#include "LinkBuffer.h"
#include "MaxFrameExtentForSlowPathCall.h"
#define UNUSED 0
namespace JSC {
static int32_t JIT_OPERATION operationConvertJSValueToInt32(ExecState* exec, EncodedJSValue value)
{
return JSValue::decode(value).toInt32(exec);
}
static double JIT_OPERATION operationConvertJSValueToDouble(ExecState* exec, EncodedJSValue value)
{
return JSValue::decode(value).toNumber(exec);
}
#if !CPU(X86) && !CPU(X86_64)
static int32_t JIT_OPERATION operationDiv(int32_t left, int32_t right)
{
return left / right;
}
static int32_t JIT_OPERATION operationMod(int32_t left, int32_t right)
{
return left % right;
}
static uint32_t JIT_OPERATION operationUnsignedDiv(uint32_t left, uint32_t right)
{
return left / right;
}
static uint32_t JIT_OPERATION operationUnsignedMod(uint32_t left, uint32_t right)
{
return left % right;
}
#endif
#if !USE(JSVALUE64)
static double JIT_OPERATION operationConvertUnsignedInt32ToDouble(uint32_t value)
{
return static_cast<double>(value);
}
#endif
static size_t sizeOfMemoryType(WASMMemoryType memoryType)
{
switch (memoryType) {
case WASMMemoryType::I8:
return 1;
case WASMMemoryType::I16:
return 2;
case WASMMemoryType::I32:
case WASMMemoryType::F32:
return 4;
case WASMMemoryType::F64:
return 8;
default:
ASSERT_NOT_REACHED();
}
RELEASE_ASSERT_NOT_REACHED();
return 0;
}
class WASMFunctionCompiler : private CCallHelpers {
public:
typedef int Expression;
typedef int Statement;
typedef int ExpressionList;
struct MemoryAddress {
MemoryAddress(void*) { }
MemoryAddress(int, uint32_t offset)
: offset(offset)
{
}
uint32_t offset;
};
struct JumpTarget {
Label label;
JumpList jumpList;
};
enum class JumpCondition { Zero, NonZero };
WASMFunctionCompiler(VM& vm, CodeBlock* codeBlock, JSWASMModule* module, unsigned stackHeight)
: CCallHelpers(&vm, codeBlock)
, m_module(module)
, m_stackHeight(stackHeight)
{
}
void startFunction(const Vector<WASMType>& arguments, uint32_t numberOfI32LocalVariables, uint32_t numberOfF32LocalVariables, uint32_t numberOfF64LocalVariables)
{
m_calleeSaveSpace = WTF::roundUpToMultipleOf(sizeof(StackSlot), RegisterSet::webAssemblyCalleeSaveRegisters().numberOfSetRegisters() * sizeof(void*));
m_codeBlock->setCalleeSaveRegisters(RegisterSet::webAssemblyCalleeSaveRegisters());
emitFunctionPrologue();
emitPutToCallFrameHeader(m_codeBlock, JSStack::CodeBlock);
m_beginLabel = label();
addPtr(TrustedImm32(-m_calleeSaveSpace - WTF::roundUpToMultipleOf(stackAlignmentRegisters(), m_stackHeight) * sizeof(StackSlot) - maxFrameExtentForSlowPathCall), GPRInfo::callFrameRegister, GPRInfo::regT1);
m_stackOverflow = branchPtr(Above, AbsoluteAddress(m_vm->addressOfStackLimit()), GPRInfo::regT1);
move(GPRInfo::regT1, stackPointerRegister);
checkStackPointerAlignment();
emitSaveCalleeSaves();
emitMaterializeTagCheckRegisters();
m_numberOfLocals = arguments.size() + numberOfI32LocalVariables + numberOfF32LocalVariables + numberOfF64LocalVariables;
unsigned localIndex = 0;
for (size_t i = 0; i < arguments.size(); ++i) {
// FIXME: No need to do type conversion if the caller is a WebAssembly function.
// https://bugs.webkit.org/show_bug.cgi?id=149310
Address address(GPRInfo::callFrameRegister, CallFrame::argumentOffset(i) * sizeof(Register));
#if USE(JSVALUE64)
JSValueRegs valueRegs(GPRInfo::regT0);
#else
JSValueRegs valueRegs(GPRInfo::regT1, GPRInfo::regT0);
#endif
loadValue(address, valueRegs);
switch (arguments[i]) {
case WASMType::I32:
convertValueToInt32(valueRegs, GPRInfo::regT0);
store32(GPRInfo::regT0, localAddress(localIndex++));
break;
case WASMType::F32:
case WASMType::F64:
#if USE(JSVALUE64)
convertValueToDouble(valueRegs, FPRInfo::fpRegT0, GPRInfo::regT1);
#else
convertValueToDouble(valueRegs, FPRInfo::fpRegT0, GPRInfo::regT2, FPRInfo::fpRegT1);
#endif
if (arguments[i] == WASMType::F32)
convertDoubleToFloat(FPRInfo::fpRegT0, FPRInfo::fpRegT0);
storeDouble(FPRInfo::fpRegT0, localAddress(localIndex++));
break;
default:
ASSERT_NOT_REACHED();
}
}
for (uint32_t i = 0; i < numberOfI32LocalVariables; ++i)
store32(TrustedImm32(0), localAddress(localIndex++));
for (uint32_t i = 0; i < numberOfF32LocalVariables; ++i)
store32(TrustedImm32(0), localAddress(localIndex++));
for (uint32_t i = 0; i < numberOfF64LocalVariables; ++i) {
#if USE(JSVALUE64)
store64(TrustedImm64(0), localAddress(localIndex++));
#else
store32(TrustedImm32(0), localAddress(localIndex));
store32(TrustedImm32(0), localAddress(localIndex).withOffset(4));
localIndex++;
#endif
}
m_codeBlock->setNumParameters(1 + arguments.size());
}
void endFunction()
{
ASSERT(!m_tempStackTop);
// FIXME: Remove these if the last statement is a return statement.
#if USE(JSVALUE64)
JSValueRegs returnValueRegs(GPRInfo::returnValueGPR);
#else
JSValueRegs returnValueRegs(GPRInfo::returnValueGPR2, GPRInfo::returnValueGPR);
#endif
moveTrustedValue(jsUndefined(), returnValueRegs);
emitRestoreCalleeSaves();
emitFunctionEpilogue();
ret();
m_stackOverflow.link(this);
if (maxFrameExtentForSlowPathCall)
addPtr(TrustedImm32(-maxFrameExtentForSlowPathCall), stackPointerRegister);
setupArgumentsWithExecState(TrustedImmPtr(m_codeBlock));
appendCallWithExceptionCheck(operationThrowStackOverflowError);
// FIXME: Implement arity check.
Label arityCheck = label();
emitFunctionPrologue();
emitPutToCallFrameHeader(m_codeBlock, JSStack::CodeBlock);
jump(m_beginLabel);
if (!m_divideErrorJumpList.empty()) {
m_divideErrorJumpList.link(this);
setupArgumentsExecState();
appendCallWithExceptionCheck(operationThrowDivideError);
}
if (!m_outOfBoundsErrorJumpList.empty()) {
m_outOfBoundsErrorJumpList.link(this);
setupArgumentsExecState();
appendCallWithExceptionCheck(operationThrowOutOfBoundsAccessError);
}
if (!m_exceptionChecks.empty()) {
m_exceptionChecks.link(this);
copyCalleeSavesToVMCalleeSavesBuffer();
// lookupExceptionHandler is passed two arguments, the VM and the exec (the CallFrame*).
move(TrustedImmPtr(vm()), GPRInfo::argumentGPR0);
move(GPRInfo::callFrameRegister, GPRInfo::argumentGPR1);
#if CPU(X86)
// FIXME: should use the call abstraction, but this is currently in the SpeculativeJIT layer!
poke(GPRInfo::argumentGPR0);
poke(GPRInfo::argumentGPR1, 1);
#endif
m_calls.append(std::make_pair(call(), FunctionPtr(lookupExceptionHandlerFromCallerFrame).value()));
jumpToExceptionHandler();
}
LinkBuffer patchBuffer(*m_vm, *this, m_codeBlock, JITCompilationMustSucceed);
for (const auto& iterator : m_calls)
patchBuffer.link(iterator.first, FunctionPtr(iterator.second));
for (size_t i = 0; i < m_callCompilationInfo.size(); ++i) {
CallCompilationInfo& compilationInfo = m_callCompilationInfo[i];
CallLinkInfo& info = *compilationInfo.callLinkInfo;
info.setCallLocations(patchBuffer.locationOfNearCall(compilationInfo.callReturnLocation),
patchBuffer.locationOf(compilationInfo.hotPathBegin),
patchBuffer.locationOfNearCall(compilationInfo.hotPathOther));
}
MacroAssemblerCodePtr withArityCheck = patchBuffer.locationOf(arityCheck);
CodeRef result = FINALIZE_CODE(patchBuffer, ("Baseline JIT code for WebAssembly"));
m_codeBlock->setJITCode(adoptRef(new DirectJITCode(result, withArityCheck, JITCode::BaselineJIT)));
m_codeBlock->capabilityLevel();
}
int buildSetLocal(WASMOpKind opKind, uint32_t localIndex, int, WASMType type)
{
switch (type) {
case WASMType::I32:
case WASMType::F32:
load32(temporaryAddress(m_tempStackTop - 1), GPRInfo::regT0);
store32(GPRInfo::regT0, localAddress(localIndex));
break;
case WASMType::F64:
loadDouble(temporaryAddress(m_tempStackTop - 1), FPRInfo::fpRegT0);
storeDouble(FPRInfo::fpRegT0, localAddress(localIndex));
break;
default:
ASSERT_NOT_REACHED();
}
if (opKind == WASMOpKind::Statement)
m_tempStackTop--;
return UNUSED;
}
int buildSetGlobal(WASMOpKind opKind, uint32_t globalIndex, int, WASMType type)
{
move(TrustedImmPtr(&m_module->globalVariables()[globalIndex]), GPRInfo::regT0);
switch (type) {
case WASMType::I32:
case WASMType::F32:
load32(temporaryAddress(m_tempStackTop - 1), GPRInfo::regT1);
store32(GPRInfo::regT1, GPRInfo::regT0);
break;
case WASMType::F64:
loadDouble(temporaryAddress(m_tempStackTop - 1), FPRInfo::fpRegT0);
storeDouble(FPRInfo::fpRegT0, GPRInfo::regT0);
break;
default:
ASSERT_NOT_REACHED();
}
if (opKind == WASMOpKind::Statement)
m_tempStackTop--;
return UNUSED;
}
void buildReturn(int, WASMExpressionType returnType)
{
#if USE(JSVALUE64)
JSValueRegs returnValueRegs(GPRInfo::returnValueGPR);
#else
JSValueRegs returnValueRegs(GPRInfo::returnValueGPR2, GPRInfo::returnValueGPR);
#endif
switch (returnType) {
case WASMExpressionType::I32:
load32(temporaryAddress(m_tempStackTop - 1), GPRInfo::returnValueGPR);
#if USE(JSVALUE64)
or64(GPRInfo::tagTypeNumberRegister, GPRInfo::returnValueGPR);
#else
move(TrustedImm32(JSValue::Int32Tag), GPRInfo::returnValueGPR2);
#endif
m_tempStackTop--;
break;
case WASMExpressionType::F32:
case WASMExpressionType::F64:
loadDouble(temporaryAddress(m_tempStackTop - 1), FPRInfo::fpRegT0);
if (returnType == WASMExpressionType::F32)
convertFloatToDouble(FPRInfo::fpRegT0, FPRInfo::fpRegT0);
convertDoubleToValue(FPRInfo::fpRegT0, returnValueRegs);
m_tempStackTop--;
break;
case WASMExpressionType::Void:
moveTrustedValue(jsUndefined(), returnValueRegs);
break;
default:
ASSERT_NOT_REACHED();
}
emitRestoreCalleeSaves();
emitFunctionEpilogue();
ret();
}
int buildImmediateI32(uint32_t immediate)
{
store32(Imm32(immediate), temporaryAddress(m_tempStackTop++));
return UNUSED;
}
int buildImmediateF32(float immediate)
{
store32(Imm32(bitwise_cast<int32_t>(immediate)), temporaryAddress(m_tempStackTop++));
return UNUSED;
}
int buildImmediateF64(double immediate)
{
#if USE(JSVALUE64)
store64(Imm64(bitwise_cast<int64_t>(immediate)), temporaryAddress(m_tempStackTop++));
#else
union {
double doubleValue;
int32_t int32Values[2];
} u = { immediate };
m_tempStackTop++;
store32(Imm32(u.int32Values[0]), temporaryAddress(m_tempStackTop - 1));
store32(Imm32(u.int32Values[1]), temporaryAddress(m_tempStackTop - 1).withOffset(4));
#endif
return UNUSED;
}
int buildGetLocal(uint32_t localIndex, WASMType type)
{
switch (type) {
case WASMType::I32:
case WASMType::F32:
load32(localAddress(localIndex), GPRInfo::regT0);
store32(GPRInfo::regT0, temporaryAddress(m_tempStackTop++));
break;
case WASMType::F64:
loadDouble(localAddress(localIndex), FPRInfo::fpRegT0);
storeDouble(FPRInfo::fpRegT0, temporaryAddress(m_tempStackTop++));
break;
default:
ASSERT_NOT_REACHED();
}
return UNUSED;
}
int buildGetGlobal(uint32_t globalIndex, WASMType type)
{
move(TrustedImmPtr(&m_module->globalVariables()[globalIndex]), GPRInfo::regT0);
switch (type) {
case WASMType::I32:
case WASMType::F32:
load32(GPRInfo::regT0, GPRInfo::regT0);
store32(GPRInfo::regT0, temporaryAddress(m_tempStackTop++));
break;
case WASMType::F64:
loadDouble(GPRInfo::regT0, FPRInfo::fpRegT0);
storeDouble(FPRInfo::fpRegT0, temporaryAddress(m_tempStackTop++));
break;
default:
ASSERT_NOT_REACHED();
}
return UNUSED;
}
int buildConvertType(int, WASMExpressionType fromType, WASMExpressionType toType, WASMTypeConversion conversion)
{
switch (fromType) {
case WASMExpressionType::I32:
load32(temporaryAddress(m_tempStackTop - 1), GPRInfo::regT0);
ASSERT(toType == WASMExpressionType::F32 || toType == WASMExpressionType::F64);
if (conversion == WASMTypeConversion::ConvertSigned)
convertInt32ToDouble(GPRInfo::regT0, FPRInfo::fpRegT0);
else {
ASSERT(conversion == WASMTypeConversion::ConvertUnsigned);
#if USE(JSVALUE64)
convertInt64ToDouble(GPRInfo::regT0, FPRInfo::fpRegT0);
#else
callOperation(operationConvertUnsignedInt32ToDouble, GPRInfo::regT0, FPRInfo::fpRegT0);
#endif
}
if (toType == WASMExpressionType::F32)
convertDoubleToFloat(FPRInfo::fpRegT0, FPRInfo::fpRegT0);
storeDouble(FPRInfo::fpRegT0, temporaryAddress(m_tempStackTop - 1));
break;
case WASMExpressionType::F32:
loadDouble(temporaryAddress(m_tempStackTop - 1), FPRInfo::fpRegT0);
switch (toType) {
case WASMExpressionType::I32:
ASSERT(conversion == WASMTypeConversion::ConvertSigned);
convertFloatToDouble(FPRInfo::fpRegT0, FPRInfo::fpRegT0);
truncateDoubleToInt32(FPRInfo::fpRegT0, GPRInfo::regT0);
store32(GPRInfo::regT0, temporaryAddress(m_tempStackTop - 1));
break;
case WASMExpressionType::F64:
ASSERT(conversion == WASMTypeConversion::Promote);
convertFloatToDouble(FPRInfo::fpRegT0, FPRInfo::fpRegT0);
storeDouble(FPRInfo::fpRegT0, temporaryAddress(m_tempStackTop - 1));
break;
default:
ASSERT_NOT_REACHED();
}
break;
case WASMExpressionType::F64:
loadDouble(temporaryAddress(m_tempStackTop - 1), FPRInfo::fpRegT0);
switch (toType) {
case WASMExpressionType::I32:
ASSERT(conversion == WASMTypeConversion::ConvertSigned);
truncateDoubleToInt32(FPRInfo::fpRegT0, GPRInfo::regT0);
store32(GPRInfo::regT0, temporaryAddress(m_tempStackTop - 1));
break;
case WASMExpressionType::F32:
ASSERT(conversion == WASMTypeConversion::Demote);
convertDoubleToFloat(FPRInfo::fpRegT0, FPRInfo::fpRegT0);
storeDouble(FPRInfo::fpRegT0, temporaryAddress(m_tempStackTop - 1));
break;
default:
ASSERT_NOT_REACHED();
}
break;
default:
ASSERT_NOT_REACHED();
}
return UNUSED;
}
int buildLoad(const MemoryAddress& memoryAddress, WASMExpressionType expressionType, WASMMemoryType memoryType, MemoryAccessConversion conversion)
{
const ArrayBuffer* arrayBuffer = m_module->arrayBuffer()->impl();
move(TrustedImmPtr(arrayBuffer->data()), GPRInfo::regT0);
load32(temporaryAddress(m_tempStackTop - 1), GPRInfo::regT1);
if (memoryAddress.offset)
add32(TrustedImm32(memoryAddress.offset), GPRInfo::regT1, GPRInfo::regT1);
and32(TrustedImm32(~(sizeOfMemoryType(memoryType) - 1)), GPRInfo::regT1);
ASSERT(arrayBuffer->byteLength() < (unsigned)(1 << 31));
if (arrayBuffer->byteLength() >= sizeOfMemoryType(memoryType))
m_outOfBoundsErrorJumpList.append(branch32(Above, GPRInfo::regT1, TrustedImm32(arrayBuffer->byteLength() - sizeOfMemoryType(memoryType))));
else
m_outOfBoundsErrorJumpList.append(jump());
BaseIndex address = BaseIndex(GPRInfo::regT0, GPRInfo::regT1, TimesOne);
switch (expressionType) {
case WASMExpressionType::I32:
switch (memoryType) {
case WASMMemoryType::I8:
if (conversion == MemoryAccessConversion::SignExtend)
load8SignedExtendTo32(address, GPRInfo::regT0);
else {
ASSERT(conversion == MemoryAccessConversion::ZeroExtend);
load8(address, GPRInfo::regT0);
}
break;
case WASMMemoryType::I16:
if (conversion == MemoryAccessConversion::SignExtend)
load16SignedExtendTo32(address, GPRInfo::regT0);
else {
ASSERT(conversion == MemoryAccessConversion::ZeroExtend);
load16(address, GPRInfo::regT0);
}
break;
case WASMMemoryType::I32:
load32(address, GPRInfo::regT0);
break;
default:
ASSERT_NOT_REACHED();
}
store32(GPRInfo::regT0, temporaryAddress(m_tempStackTop - 1));
break;
case WASMExpressionType::F32:
ASSERT(memoryType == WASMMemoryType::F32 && conversion == MemoryAccessConversion::NoConversion);
load32(address, GPRInfo::regT0);
store32(GPRInfo::regT0, temporaryAddress(m_tempStackTop - 1));
break;
case WASMExpressionType::F64:
ASSERT(memoryType == WASMMemoryType::F64 && conversion == MemoryAccessConversion::NoConversion);
loadDouble(address, FPRInfo::fpRegT0);
storeDouble(FPRInfo::fpRegT0, temporaryAddress(m_tempStackTop - 1));
break;
default:
ASSERT_NOT_REACHED();
}
return UNUSED;
}
int buildStore(WASMOpKind opKind, const MemoryAddress& memoryAddress, WASMExpressionType expressionType, WASMMemoryType memoryType, int)
{
const ArrayBuffer* arrayBuffer = m_module->arrayBuffer()->impl();
move(TrustedImmPtr(arrayBuffer->data()), GPRInfo::regT0);
load32(temporaryAddress(m_tempStackTop - 2), GPRInfo::regT1);
if (memoryAddress.offset)
add32(TrustedImm32(memoryAddress.offset), GPRInfo::regT1, GPRInfo::regT1);
and32(TrustedImm32(~(sizeOfMemoryType(memoryType) - 1)), GPRInfo::regT1);
ASSERT(arrayBuffer->byteLength() < (1u << 31));
if (arrayBuffer->byteLength() >= sizeOfMemoryType(memoryType))
m_outOfBoundsErrorJumpList.append(branch32(Above, GPRInfo::regT1, TrustedImm32(arrayBuffer->byteLength() - sizeOfMemoryType(memoryType))));
else
m_outOfBoundsErrorJumpList.append(jump());
BaseIndex address = BaseIndex(GPRInfo::regT0, GPRInfo::regT1, TimesOne);
switch (expressionType) {
case WASMExpressionType::I32:
load32(temporaryAddress(m_tempStackTop - 1), GPRInfo::regT2);
switch (memoryType) {
case WASMMemoryType::I8:
store8(GPRInfo::regT2, address);
break;
case WASMMemoryType::I16:
store16(GPRInfo::regT2, address);
break;
case WASMMemoryType::I32:
store32(GPRInfo::regT2, address);
break;
default:
ASSERT_NOT_REACHED();
}
break;
case WASMExpressionType::F32:
ASSERT(memoryType == WASMMemoryType::F32);
load32(temporaryAddress(m_tempStackTop - 1), GPRInfo::regT2);
store32(GPRInfo::regT2, address);
break;
case WASMExpressionType::F64:
ASSERT(memoryType == WASMMemoryType::F64);
loadDouble(temporaryAddress(m_tempStackTop - 1), FPRInfo::fpRegT0);
storeDouble(FPRInfo::fpRegT0, address);
break;
default:
ASSERT_NOT_REACHED();
}
m_tempStackTop -= 2;
if (opKind == WASMOpKind::Expression) {
switch (expressionType) {
case WASMExpressionType::I32:
case WASMExpressionType::F32:
store32(GPRInfo::regT2, temporaryAddress(m_tempStackTop++));
break;
case WASMExpressionType::F64:
storeDouble(FPRInfo::fpRegT0, temporaryAddress(m_tempStackTop++));
break;
default:
ASSERT_NOT_REACHED();
}
}
return UNUSED;
}
int buildUnaryI32(int, WASMOpExpressionI32 op)
{
load32(temporaryAddress(m_tempStackTop - 1), GPRInfo::regT0);
switch (op) {
case WASMOpExpressionI32::Negate:
neg32(GPRInfo::regT0);
break;
case WASMOpExpressionI32::BitNot:
xor32(TrustedImm32(-1), GPRInfo::regT0);
break;
case WASMOpExpressionI32::CountLeadingZeros:
countLeadingZeros32(GPRInfo::regT0, GPRInfo::regT0);
break;
case WASMOpExpressionI32::LogicalNot: {
// FIXME: Don't use branches.
Jump zero = branchTest32(Zero, GPRInfo::regT0);
move(TrustedImm32(0), GPRInfo::regT0);
Jump end = jump();
zero.link(this);
move(TrustedImm32(1), GPRInfo::regT0);
end.link(this);
break;
}
case WASMOpExpressionI32::Abs: {
// FIXME: Don't use branches.
Jump end = branchTest32(PositiveOrZero, GPRInfo::regT0);
neg32(GPRInfo::regT0);
end.link(this);
break;
}
default:
ASSERT_NOT_REACHED();
}
store32(GPRInfo::regT0, temporaryAddress(m_tempStackTop - 1));
return UNUSED;
}
int buildUnaryF32(int, WASMOpExpressionF32 op)
{
loadDouble(temporaryAddress(m_tempStackTop - 1), FPRInfo::fpRegT1);
switch (op) {
case WASMOpExpressionF32::Negate:
convertFloatToDouble(FPRInfo::fpRegT1, FPRInfo::fpRegT1);
negateDouble(FPRInfo::fpRegT1, FPRInfo::fpRegT0);
convertDoubleToFloat(FPRInfo::fpRegT0, FPRInfo::fpRegT0);
break;
case WASMOpExpressionF32::Abs:
convertFloatToDouble(FPRInfo::fpRegT1, FPRInfo::fpRegT1);
absDouble(FPRInfo::fpRegT1, FPRInfo::fpRegT0);
convertDoubleToFloat(FPRInfo::fpRegT0, FPRInfo::fpRegT0);
break;
case WASMOpExpressionF32::Ceil:
callOperation(ceilf, FPRInfo::fpRegT1, FPRInfo::fpRegT0);
break;
case WASMOpExpressionF32::Floor:
callOperation(floorf, FPRInfo::fpRegT1, FPRInfo::fpRegT0);
break;
case WASMOpExpressionF32::Sqrt:
convertFloatToDouble(FPRInfo::fpRegT1, FPRInfo::fpRegT1);
sqrtDouble(FPRInfo::fpRegT1, FPRInfo::fpRegT0);
convertDoubleToFloat(FPRInfo::fpRegT0, FPRInfo::fpRegT0);
break;
default:
ASSERT_NOT_REACHED();
}
storeDouble(FPRInfo::fpRegT0, temporaryAddress(m_tempStackTop - 1));
return UNUSED;
}
int buildUnaryF64(int, WASMOpExpressionF64 op)
{
loadDouble(temporaryAddress(m_tempStackTop - 1), FPRInfo::fpRegT1);
switch (op) {
case WASMOpExpressionF64::Negate:
negateDouble(FPRInfo::fpRegT1, FPRInfo::fpRegT0);
break;
case WASMOpExpressionF64::Abs:
absDouble(FPRInfo::fpRegT1, FPRInfo::fpRegT0);
break;
case WASMOpExpressionF64::Sqrt:
sqrtDouble(FPRInfo::fpRegT1, FPRInfo::fpRegT0);
break;
case WASMOpExpressionF64::Ceil:
case WASMOpExpressionF64::Floor:
case WASMOpExpressionF64::Cos:
case WASMOpExpressionF64::Sin:
case WASMOpExpressionF64::Tan:
case WASMOpExpressionF64::ACos:
case WASMOpExpressionF64::ASin:
case WASMOpExpressionF64::ATan:
case WASMOpExpressionF64::Exp:
case WASMOpExpressionF64::Ln:
D_JITOperation_D operation;
switch (op) {
case WASMOpExpressionF64::Ceil:
operation = ceil;
break;
case WASMOpExpressionF64::Floor:
operation = floor;
break;
case WASMOpExpressionF64::Cos:
operation = cos;
break;
case WASMOpExpressionF64::Sin:
operation = sin;
break;
case WASMOpExpressionF64::Tan:
operation = tan;
break;
case WASMOpExpressionF64::ACos:
operation = acos;
break;
case WASMOpExpressionF64::ASin:
operation = asin;
break;
case WASMOpExpressionF64::ATan:
operation = atan;
break;
case WASMOpExpressionF64::Exp:
operation = exp;
break;
case WASMOpExpressionF64::Ln:
operation = log;
break;
default:
RELEASE_ASSERT_NOT_REACHED();
}
callOperation(operation, FPRInfo::fpRegT1, FPRInfo::fpRegT0);
break;
default:
ASSERT_NOT_REACHED();
}
storeDouble(FPRInfo::fpRegT0, temporaryAddress(m_tempStackTop - 1));
return UNUSED;
}
int buildBinaryI32(int, int, WASMOpExpressionI32 op)
{
load32(temporaryAddress(m_tempStackTop - 2), GPRInfo::regT0);
load32(temporaryAddress(m_tempStackTop - 1), GPRInfo::regT1);
switch (op) {
case WASMOpExpressionI32::Add:
add32(GPRInfo::regT1, GPRInfo::regT0);
break;
case WASMOpExpressionI32::Sub:
sub32(GPRInfo::regT1, GPRInfo::regT0);
break;
case WASMOpExpressionI32::Mul:
mul32(GPRInfo::regT1, GPRInfo::regT0);
break;
case WASMOpExpressionI32::SDiv:
case WASMOpExpressionI32::UDiv:
case WASMOpExpressionI32::SMod:
case WASMOpExpressionI32::UMod: {
m_divideErrorJumpList.append(branchTest32(Zero, GPRInfo::regT1));
if (op == WASMOpExpressionI32::SDiv || op == WASMOpExpressionI32::SMod) {
Jump denominatorNotNeg1 = branch32(NotEqual, GPRInfo::regT1, TrustedImm32(-1));
m_divideErrorJumpList.append(branch32(Equal, GPRInfo::regT0, TrustedImm32(-2147483647-1)));
denominatorNotNeg1.link(this);
}
#if CPU(X86) || CPU(X86_64)
ASSERT(GPRInfo::regT0 == X86Registers::eax);
move(GPRInfo::regT1, X86Registers::ecx);
if (op == WASMOpExpressionI32::SDiv || op == WASMOpExpressionI32::SMod) {
x86ConvertToDoubleWord32();
x86Div32(X86Registers::ecx);
} else {
ASSERT(op == WASMOpExpressionI32::UDiv || op == WASMOpExpressionI32::UMod);
xor32(X86Registers::edx, X86Registers::edx);
m_assembler.divl_r(X86Registers::ecx);
}
if (op == WASMOpExpressionI32::SMod || op == WASMOpExpressionI32::UMod)
move(X86Registers::edx, GPRInfo::regT0);
#else
// FIXME: We should be able to do an inline div on ARMv7 and ARM64.
switch (op) {
case WASMOpExpressionI32::SDiv:
callOperation(operationDiv, GPRInfo::regT0, GPRInfo::regT1, GPRInfo::regT0);
break;
case WASMOpExpressionI32::UDiv:
callOperation(operationUnsignedDiv, GPRInfo::regT0, GPRInfo::regT1, GPRInfo::regT0);
break;
case WASMOpExpressionI32::SMod:
callOperation(operationMod, GPRInfo::regT0, GPRInfo::regT1, GPRInfo::regT0);
break;
case WASMOpExpressionI32::UMod:
callOperation(operationUnsignedMod, GPRInfo::regT0, GPRInfo::regT1, GPRInfo::regT0);
break;
default:
ASSERT_NOT_REACHED();
}
#endif
break;
}
case WASMOpExpressionI32::BitOr:
or32(GPRInfo::regT1, GPRInfo::regT0);
break;
case WASMOpExpressionI32::BitAnd:
and32(GPRInfo::regT1, GPRInfo::regT0);
break;
case WASMOpExpressionI32::BitXor:
xor32(GPRInfo::regT1, GPRInfo::regT0);
break;
case WASMOpExpressionI32::LeftShift:
lshift32(GPRInfo::regT1, GPRInfo::regT0);
break;
case WASMOpExpressionI32::ArithmeticRightShift:
rshift32(GPRInfo::regT1, GPRInfo::regT0);
break;
case WASMOpExpressionI32::LogicalRightShift:
urshift32(GPRInfo::regT1, GPRInfo::regT0);
break;
default:
ASSERT_NOT_REACHED();
}
m_tempStackTop--;
store32(GPRInfo::regT0, temporaryAddress(m_tempStackTop - 1));
return UNUSED;
}
int buildBinaryF32(int, int, WASMOpExpressionF32 op)
{
loadDouble(temporaryAddress(m_tempStackTop - 2), FPRInfo::fpRegT0);
loadDouble(temporaryAddress(m_tempStackTop - 1), FPRInfo::fpRegT1);
convertFloatToDouble(FPRInfo::fpRegT0, FPRInfo::fpRegT0);
convertFloatToDouble(FPRInfo::fpRegT1, FPRInfo::fpRegT1);
switch (op) {
case WASMOpExpressionF32::Add:
addDouble(FPRInfo::fpRegT1, FPRInfo::fpRegT0);
break;
case WASMOpExpressionF32::Sub:
subDouble(FPRInfo::fpRegT1, FPRInfo::fpRegT0);
break;
case WASMOpExpressionF32::Mul:
mulDouble(FPRInfo::fpRegT1, FPRInfo::fpRegT0);
break;
case WASMOpExpressionF32::Div:
divDouble(FPRInfo::fpRegT1, FPRInfo::fpRegT0);
break;
default:
RELEASE_ASSERT_NOT_REACHED();
}
convertDoubleToFloat(FPRInfo::fpRegT0, FPRInfo::fpRegT0);
m_tempStackTop--;
storeDouble(FPRInfo::fpRegT0, temporaryAddress(m_tempStackTop - 1));
return UNUSED;
}
int buildBinaryF64(int, int, WASMOpExpressionF64 op)
{
loadDouble(temporaryAddress(m_tempStackTop - 2), FPRInfo::fpRegT0);
loadDouble(temporaryAddress(m_tempStackTop - 1), FPRInfo::fpRegT1);
switch (op) {
case WASMOpExpressionF64::Add:
addDouble(FPRInfo::fpRegT1, FPRInfo::fpRegT0);
break;
case WASMOpExpressionF64::Sub:
subDouble(FPRInfo::fpRegT1, FPRInfo::fpRegT0);
break;
case WASMOpExpressionF64::Mul:
mulDouble(FPRInfo::fpRegT1, FPRInfo::fpRegT0);
break;
case WASMOpExpressionF64::Div:
divDouble(FPRInfo::fpRegT1, FPRInfo::fpRegT0);
break;
case WASMOpExpressionF64::Mod:
case WASMOpExpressionF64::ATan2:
case WASMOpExpressionF64::Pow:
D_JITOperation_DD operation;
switch (op) {
case WASMOpExpressionF64::Mod:
operation = fmod;
break;
case WASMOpExpressionF64::ATan2:
operation = atan2;
break;
case WASMOpExpressionF64::Pow:
operation = pow;
break;
default:
RELEASE_ASSERT_NOT_REACHED();
}
callOperation(operation, FPRInfo::fpRegT0, FPRInfo::fpRegT1, FPRInfo::fpRegT0);
break;
default:
ASSERT_NOT_REACHED();
}
m_tempStackTop--;
storeDouble(FPRInfo::fpRegT0, temporaryAddress(m_tempStackTop - 1));
return UNUSED;
}
int buildRelationalI32(int, int, WASMOpExpressionI32 op)
{
load32(temporaryAddress(m_tempStackTop - 2), GPRInfo::regT0);
load32(temporaryAddress(m_tempStackTop - 1), GPRInfo::regT1);
RelationalCondition condition;
switch (op) {
case WASMOpExpressionI32::EqualI32:
condition = Equal;
break;
case WASMOpExpressionI32::NotEqualI32:
condition = NotEqual;
break;
case WASMOpExpressionI32::SLessThanI32:
condition = LessThan;
break;
case WASMOpExpressionI32::ULessThanI32:
condition = Below;
break;
case WASMOpExpressionI32::SLessThanOrEqualI32:
condition = LessThanOrEqual;
break;
case WASMOpExpressionI32::ULessThanOrEqualI32:
condition = BelowOrEqual;
break;
case WASMOpExpressionI32::SGreaterThanI32:
condition = GreaterThan;
break;
case WASMOpExpressionI32::UGreaterThanI32:
condition = Above;
break;
case WASMOpExpressionI32::SGreaterThanOrEqualI32:
condition = GreaterThanOrEqual;
break;
case WASMOpExpressionI32::UGreaterThanOrEqualI32:
condition = AboveOrEqual;
break;
default:
RELEASE_ASSERT_NOT_REACHED();
}
compare32(condition, GPRInfo::regT0, GPRInfo::regT1, GPRInfo::regT0);
m_tempStackTop--;
store32(GPRInfo::regT0, temporaryAddress(m_tempStackTop - 1));
return UNUSED;
}
int buildRelationalF32(int, int, WASMOpExpressionI32 op)
{
loadDouble(temporaryAddress(m_tempStackTop - 2), FPRInfo::fpRegT0);
loadDouble(temporaryAddress(m_tempStackTop - 1), FPRInfo::fpRegT1);
convertFloatToDouble(FPRInfo::fpRegT0, FPRInfo::fpRegT0);
convertFloatToDouble(FPRInfo::fpRegT1, FPRInfo::fpRegT1);
DoubleCondition condition;
switch (op) {
case WASMOpExpressionI32::EqualF32:
condition = DoubleEqual;
break;
case WASMOpExpressionI32::NotEqualF32:
condition = DoubleNotEqual;
break;
case WASMOpExpressionI32::LessThanF32:
condition = DoubleLessThan;
break;
case WASMOpExpressionI32::LessThanOrEqualF32:
condition = DoubleLessThanOrEqual;
break;
case WASMOpExpressionI32::GreaterThanF32:
condition = DoubleGreaterThan;
break;
case WASMOpExpressionI32::GreaterThanOrEqualF32:
condition = DoubleGreaterThanOrEqual;
break;
default:
RELEASE_ASSERT_NOT_REACHED();
}
m_tempStackTop--;
Jump trueCase = branchDouble(condition, FPRInfo::fpRegT0, FPRInfo::fpRegT1);
store32(TrustedImm32(0), temporaryAddress(m_tempStackTop - 1));
Jump end = jump();
trueCase.link(this);
store32(TrustedImm32(1), temporaryAddress(m_tempStackTop - 1));
end.link(this);
return UNUSED;
}
int buildRelationalF64(int, int, WASMOpExpressionI32 op)
{
loadDouble(temporaryAddress(m_tempStackTop - 2), FPRInfo::fpRegT0);
loadDouble(temporaryAddress(m_tempStackTop - 1), FPRInfo::fpRegT1);
DoubleCondition condition;
switch (op) {
case WASMOpExpressionI32::EqualF64:
condition = DoubleEqual;
break;
case WASMOpExpressionI32::NotEqualF64:
condition = DoubleNotEqual;
break;
case WASMOpExpressionI32::LessThanF64:
condition = DoubleLessThan;
break;
case WASMOpExpressionI32::LessThanOrEqualF64:
condition = DoubleLessThanOrEqual;
break;
case WASMOpExpressionI32::GreaterThanF64:
condition = DoubleGreaterThan;
break;
case WASMOpExpressionI32::GreaterThanOrEqualF64:
condition = DoubleGreaterThanOrEqual;