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WasmBBQJIT64.cpp
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4969 lines (4477 loc) · 195 KB
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/*
* Copyright (C) 2019-2023 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.
*/
#include "config.h"
#include "WasmBBQJIT64.h"
WTF_ALLOW_UNSAFE_BUFFER_USAGE_BEGIN
#include "WasmBBQJIT.h"
#if ENABLE(WEBASSEMBLY_BBQJIT)
#if USE(JSVALUE64)
#include "B3Common.h"
#include "B3ValueRep.h"
#include "BinarySwitch.h"
#include "BytecodeStructs.h"
#include "CCallHelpers.h"
#include "CPU.h"
#include "CompilerTimingScope.h"
#include "GPRInfo.h"
#include "JSCast.h"
#include "JSWebAssemblyArrayInlines.h"
#include "JSWebAssemblyException.h"
#include "JSWebAssemblyStruct.h"
#include "MacroAssembler.h"
#include "RegisterSet.h"
#include "WasmBBQDisassembler.h"
#include "WasmCallingConvention.h"
#include "WasmCompilationMode.h"
#include "WasmFaultSignalHandler.h"
#include "WasmFormat.h"
#include "WasmFunctionParser.h"
#include "WasmIRGeneratorHelpers.h"
#include "WasmMemoryInformation.h"
#include "WasmModule.h"
#include "WasmModuleInformation.h"
#include "WasmOMGIRGenerator.h"
#include "WasmOperations.h"
#include "WasmOps.h"
#include "WasmThunks.h"
#include "WasmTypeDefinition.h"
#include "WebAssemblyFunctionBase.h"
#include "WebAssemblyGCStructure.h"
#include <bit>
#include <wtf/Assertions.h>
#include <wtf/Compiler.h>
#include <wtf/HashFunctions.h>
#include <wtf/HashMap.h>
#include <wtf/MathExtras.h>
#include <wtf/PlatformRegisters.h>
#include <wtf/SmallSet.h>
#include <wtf/StdLibExtras.h>
namespace JSC { namespace Wasm { namespace BBQJITImpl {
Location Location::fromArgumentLocation(ArgumentLocation argLocation, TypeKind)
{
switch (argLocation.location.kind()) {
case ValueLocation::Kind::GPRRegister:
return Location::fromGPR(argLocation.location.jsr().gpr());
case ValueLocation::Kind::FPRRegister:
return Location::fromFPR(argLocation.location.fpr());
case ValueLocation::Kind::StackArgument:
return Location::fromStackArgument(argLocation.location.offsetFromSP());
case ValueLocation::Kind::Stack:
return Location::fromStack(argLocation.location.offsetFromFP());
}
RELEASE_ASSERT_NOT_REACHED();
}
bool Location::isRegister() const
{
return isGPR() || isFPR();
}
uint32_t NODELETE BBQJIT::sizeOfType(TypeKind type)
{
switch (type) {
case TypeKind::I32:
case TypeKind::F32:
return 4;
case TypeKind::I64:
case TypeKind::F64:
return 8;
case TypeKind::V128:
return 16;
case TypeKind::I31ref:
case TypeKind::Func:
case TypeKind::Funcref:
case TypeKind::Ref:
case TypeKind::RefNull:
case TypeKind::Rec:
case TypeKind::Sub:
case TypeKind::Subfinal:
case TypeKind::Struct:
case TypeKind::Structref:
case TypeKind::Exnref:
case TypeKind::Externref:
case TypeKind::Array:
case TypeKind::Arrayref:
case TypeKind::Eqref:
case TypeKind::Anyref:
case TypeKind::Noexnref:
case TypeKind::Noneref:
case TypeKind::Nofuncref:
case TypeKind::Noexternref:
return sizeof(EncodedJSValue);
case TypeKind::Void:
return 0;
}
return 0;
}
// This function is intentionally not using implicitSlots since arguments and results should not include implicit slot.
Location ControlData::allocateArgumentOrResult(BBQJIT& generator, TypeKind type, unsigned i, RegisterSet& remainingGPRs, RegisterSet& remainingFPRs)
{
switch (type) {
case TypeKind::V128:
case TypeKind::F32:
case TypeKind::F64: {
if (remainingFPRs.isEmpty())
return generator.canonicalSlot(Value::fromTemp(type, this->enclosedHeight() + i));
auto reg = *remainingFPRs.begin();
remainingFPRs.remove(reg);
return Location::fromFPR(reg.fpr());
}
default:
if (remainingGPRs.isEmpty())
return generator.canonicalSlot(Value::fromTemp(type, this->enclosedHeight() + i));
auto reg = *remainingGPRs.begin();
remainingGPRs.remove(reg);
return Location::fromGPR(reg.gpr());
}
}
Value BBQJIT::instanceValue()
{
return Value::pinned(TypeKind::I64, Location::fromGPR(GPRInfo::wasmContextInstancePointer));
}
// Tables
[[nodiscard]] PartialResult BBQJIT::addTableGet(unsigned tableIndex, Value index, Value& result)
{
// FIXME: Emit this inline <https://bugs.webkit.org/show_bug.cgi?id=198506>.
ASSERT(index.type() == TypeKind::I32);
TypeKind returnType = m_info.tables[tableIndex].wasmType().kind;
ASSERT(typeKindSizeInBytes(returnType) == 8);
Vector<Value, 8> arguments = {
instanceValue(),
Value::fromI32(tableIndex),
index
};
result = topValue(returnType);
emitCCall(&operationGetWasmTableElement, arguments, result);
Location resultLocation = loadIfNecessary(result);
LOG_INSTRUCTION("TableGet", tableIndex, index, RESULT(result));
recordJumpToThrowException(ExceptionType::OutOfBoundsTableAccess, m_jit.branchTest64(ResultCondition::Zero, resultLocation.asGPR()));
return { };
}
[[nodiscard]] PartialResult BBQJIT::getGlobal(uint32_t index, Value& result)
{
const Wasm::GlobalInformation& global = m_info.globals[index];
Type type = global.type;
int32_t offset = JSWebAssemblyInstance::offsetOfGlobal(m_info, index);
Value globalValue = Value::pinned(type.kind, Location::fromGlobal(offset));
switch (global.bindingMode) {
case Wasm::GlobalInformation::BindingMode::EmbeddedInInstance:
result = topValue(type.kind);
emitLoad(globalValue, loadIfNecessary(result));
break;
case Wasm::GlobalInformation::BindingMode::Portable:
ASSERT(global.mutability == Wasm::Mutability::Mutable);
m_jit.loadPtr(Address(GPRInfo::wasmContextInstancePointer, offset), wasmScratchGPR);
result = topValue(type.kind);
Location resultLocation = allocate(result);
switch (type.kind) {
case TypeKind::I32:
m_jit.load32(Address(wasmScratchGPR), resultLocation.asGPR());
break;
case TypeKind::I64:
m_jit.load64(Address(wasmScratchGPR), resultLocation.asGPR());
break;
case TypeKind::F32:
m_jit.loadFloat(Address(wasmScratchGPR), resultLocation.asFPR());
break;
case TypeKind::F64:
m_jit.loadDouble(Address(wasmScratchGPR), resultLocation.asFPR());
break;
case TypeKind::V128:
m_jit.loadVector(Address(wasmScratchGPR), resultLocation.asFPR());
break;
case TypeKind::Func:
case TypeKind::Funcref:
case TypeKind::Ref:
case TypeKind::RefNull:
case TypeKind::Rec:
case TypeKind::Sub:
case TypeKind::Subfinal:
case TypeKind::Struct:
case TypeKind::Structref:
case TypeKind::Exnref:
case TypeKind::Externref:
case TypeKind::Array:
case TypeKind::Arrayref:
case TypeKind::I31ref:
case TypeKind::Eqref:
case TypeKind::Anyref:
case TypeKind::Noexnref:
case TypeKind::Noneref:
case TypeKind::Nofuncref:
case TypeKind::Noexternref:
m_jit.load64(Address(wasmScratchGPR), resultLocation.asGPR());
break;
case TypeKind::Void:
break;
}
break;
}
LOG_INSTRUCTION("GetGlobal", index, RESULT(result));
return { };
}
[[nodiscard]] PartialResult BBQJIT::setGlobal(uint32_t index, Value value)
{
const Wasm::GlobalInformation& global = m_info.globals[index];
Type type = global.type;
int32_t offset = JSWebAssemblyInstance::offsetOfGlobal(m_info, index);
Location valueLocation = locationOf(value);
switch (global.bindingMode) {
case Wasm::GlobalInformation::BindingMode::EmbeddedInInstance: {
emitMove(value, Location::fromGlobal(offset));
consume(value);
if (isRefType(type))
emitWriteBarrier(GPRInfo::wasmContextInstancePointer);
break;
}
case Wasm::GlobalInformation::BindingMode::Portable: {
ASSERT(global.mutability == Wasm::Mutability::Mutable);
m_jit.loadPtr(Address(GPRInfo::wasmContextInstancePointer, offset), wasmScratchGPR);
Location valueLocation;
if (value.isConst() && value.isFloat()) {
ScratchScope<0, 1> scratches(*this);
valueLocation = Location::fromFPR(scratches.fpr(0));
emitMoveConst(value, valueLocation);
} else if (value.isConst()) {
ScratchScope<1, 0> scratches(*this);
valueLocation = Location::fromGPR(scratches.gpr(0));
emitMoveConst(value, valueLocation);
} else
valueLocation = loadIfNecessary(value);
ASSERT(valueLocation.isRegister());
consume(value);
switch (type.kind) {
case TypeKind::I32:
m_jit.store32(valueLocation.asGPR(), Address(wasmScratchGPR));
break;
case TypeKind::I64:
m_jit.store64(valueLocation.asGPR(), Address(wasmScratchGPR));
break;
case TypeKind::F32:
m_jit.storeFloat(valueLocation.asFPR(), Address(wasmScratchGPR));
break;
case TypeKind::F64:
m_jit.storeDouble(valueLocation.asFPR(), Address(wasmScratchGPR));
break;
case TypeKind::V128:
m_jit.storeVector(valueLocation.asFPR(), Address(wasmScratchGPR));
break;
case TypeKind::Func:
case TypeKind::Funcref:
case TypeKind::Ref:
case TypeKind::RefNull:
case TypeKind::Rec:
case TypeKind::Sub:
case TypeKind::Subfinal:
case TypeKind::Struct:
case TypeKind::Structref:
case TypeKind::Exnref:
case TypeKind::Externref:
case TypeKind::Array:
case TypeKind::Arrayref:
case TypeKind::I31ref:
case TypeKind::Eqref:
case TypeKind::Anyref:
case TypeKind::Noexnref:
case TypeKind::Noneref:
case TypeKind::Nofuncref:
case TypeKind::Noexternref:
m_jit.store64(valueLocation.asGPR(), Address(wasmScratchGPR));
break;
case TypeKind::Void:
break;
}
if (isRefType(type)) {
m_jit.loadPtr(Address(wasmScratchGPR, Wasm::Global::offsetOfOwner() - Wasm::Global::offsetOfValue()), wasmScratchGPR);
emitWriteBarrier(wasmScratchGPR);
}
break;
}
}
LOG_INSTRUCTION("SetGlobal", index, value, valueLocation);
return { };
}
// Memory
[[nodiscard]] PartialResult BBQJIT::load(LoadOpType loadOp, Value pointer, Value& result, uint64_t uoffset, uint8_t memoryIndex)
{
bool offsetAndSizeOverflows = m_info.memory(memoryIndex).isMemory64()
? sumOverflows<uint64_t>(uoffset, sizeOfLoadOp(loadOp))
: sumOverflows<uint32_t>(uoffset, sizeOfLoadOp(loadOp));
if (offsetAndSizeOverflows) [[unlikely]] {
// FIXME: Same issue as in AirIRGenerator::load(): https://bugs.webkit.org/show_bug.cgi?id=166435
emitThrowException(ExceptionType::OutOfBoundsMemoryAccess);
consume(pointer);
// Unreachable at runtime, so we just add a constant that makes the types work out.
switch (loadOp) {
case LoadOpType::I32Load8S:
case LoadOpType::I32Load16S:
case LoadOpType::I32Load:
case LoadOpType::I32Load16U:
case LoadOpType::I32Load8U:
result = Value::fromI32(0);
break;
case LoadOpType::I64Load8S:
case LoadOpType::I64Load8U:
case LoadOpType::I64Load16S:
case LoadOpType::I64Load32U:
case LoadOpType::I64Load32S:
case LoadOpType::I64Load:
case LoadOpType::I64Load16U:
result = Value::fromI64(0);
break;
case LoadOpType::F32Load:
result = Value::fromF32(0);
break;
case LoadOpType::F64Load:
result = Value::fromF64(0);
break;
}
} else {
result = emitCheckAndPrepareAndMaterializePointerApply(pointer, uoffset, sizeOfLoadOp(loadOp), memoryIndex, [&](auto location) -> Value {
consume(pointer);
Value result = topValue(typeOfLoadOp(loadOp));
Location resultLocation = allocate(result);
switch (loadOp) {
case LoadOpType::I32Load8S:
m_jit.load8SignedExtendTo32(location, resultLocation.asGPR());
break;
case LoadOpType::I64Load8S:
m_jit.load8SignedExtendTo64(location, resultLocation.asGPR());
break;
case LoadOpType::I32Load8U:
m_jit.load8(location, resultLocation.asGPR());
break;
case LoadOpType::I64Load8U:
m_jit.load8(location, resultLocation.asGPR());
break;
case LoadOpType::I32Load16S:
m_jit.load16SignedExtendTo32(location, resultLocation.asGPR());
break;
case LoadOpType::I64Load16S:
m_jit.load16SignedExtendTo64(location, resultLocation.asGPR());
break;
case LoadOpType::I32Load16U:
m_jit.load16(location, resultLocation.asGPR());
break;
case LoadOpType::I64Load16U:
m_jit.load16(location, resultLocation.asGPR());
break;
case LoadOpType::I32Load:
m_jit.load32(location, resultLocation.asGPR());
break;
case LoadOpType::I64Load32U:
m_jit.load32(location, resultLocation.asGPR());
break;
case LoadOpType::I64Load32S:
m_jit.load32SignedExtendTo64(location, resultLocation.asGPR());
break;
case LoadOpType::I64Load:
m_jit.load64(location, resultLocation.asGPR());
break;
case LoadOpType::F32Load:
m_jit.loadFloat(location, resultLocation.asFPR());
break;
case LoadOpType::F64Load:
m_jit.loadDouble(location, resultLocation.asFPR());
break;
}
return result;
});
}
LOG_INSTRUCTION(LOAD_OP_NAMES[(unsigned)loadOp - (unsigned)I32Load], memoryIndex, pointer, uoffset, RESULT(result));
return { };
}
[[nodiscard]] PartialResult BBQJIT::store(StoreOpType storeOp, Value pointer, Value value, uint64_t uoffset, uint8_t memoryIndex)
{
Location valueLocation = locationOf(value);
bool offsetAndSizeOverflows = m_info.memory(memoryIndex).isMemory64()
? sumOverflows<uint64_t>(uoffset, sizeOfStoreOp(storeOp))
: sumOverflows<uint32_t>(uoffset, sizeOfStoreOp(storeOp));
if (offsetAndSizeOverflows) [[unlikely]] {
// FIXME: Same issue as in AirIRGenerator::load(): https://bugs.webkit.org/show_bug.cgi?id=166435
emitThrowException(ExceptionType::OutOfBoundsMemoryAccess);
consume(pointer);
consume(value);
} else {
emitCheckAndPrepareAndMaterializePointerApply(pointer, uoffset, sizeOfStoreOp(storeOp), memoryIndex, [&](auto location) -> void {
Location valueLocation;
if (value.isConst() && value.isFloat()) {
ScratchScope<0, 1> scratches(*this);
valueLocation = Location::fromFPR(scratches.fpr(0));
emitMoveConst(value, valueLocation);
} else if (value.isConst()) {
ScratchScope<1, 0> scratches(*this);
valueLocation = Location::fromGPR(scratches.gpr(0));
emitMoveConst(value, valueLocation);
} else
valueLocation = loadIfNecessary(value);
ASSERT(valueLocation.isRegister());
consume(value);
consume(pointer);
switch (storeOp) {
case StoreOpType::I64Store8:
case StoreOpType::I32Store8:
m_jit.store8(valueLocation.asGPR(), location);
return;
case StoreOpType::I64Store16:
case StoreOpType::I32Store16:
m_jit.store16(valueLocation.asGPR(), location);
return;
case StoreOpType::I64Store32:
case StoreOpType::I32Store:
m_jit.store32(valueLocation.asGPR(), location);
return;
case StoreOpType::I64Store:
m_jit.store64(valueLocation.asGPR(), location);
return;
case StoreOpType::F32Store:
m_jit.storeFloat(valueLocation.asFPR(), location);
return;
case StoreOpType::F64Store:
m_jit.storeDouble(valueLocation.asFPR(), location);
return;
}
});
}
LOG_INSTRUCTION(STORE_OP_NAMES[(unsigned)storeOp - (unsigned)I32Store], memoryIndex, pointer, uoffset, value, valueLocation);
return { };
}
void BBQJIT::emitSanitizeAtomicResult(ExtAtomicOpType op, TypeKind resultType, GPRReg source, GPRReg dest)
{
switch (resultType) {
case TypeKind::I64: {
switch (accessWidth(op)) {
case Width8:
m_jit.zeroExtend8To32(source, dest);
return;
case Width16:
m_jit.zeroExtend16To32(source, dest);
return;
case Width32:
m_jit.zeroExtend32ToWord(source, dest);
return;
case Width64:
m_jit.move(source, dest);
return;
case Width128:
RELEASE_ASSERT_NOT_REACHED();
return;
}
return;
}
case TypeKind::I32:
switch (accessWidth(op)) {
case Width8:
m_jit.zeroExtend8To32(source, dest);
return;
case Width16:
m_jit.zeroExtend16To32(source, dest);
return;
case Width32:
case Width64:
m_jit.move(source, dest);
return;
case Width128:
RELEASE_ASSERT_NOT_REACHED();
return;
}
return;
default:
RELEASE_ASSERT_NOT_REACHED();
return;
}
}
void BBQJIT::emitSanitizeAtomicResult(ExtAtomicOpType op, TypeKind resultType, GPRReg result)
{
emitSanitizeAtomicResult(op, resultType, result, result);
}
template<typename Functor>
void BBQJIT::emitAtomicOpGeneric(ExtAtomicOpType op, Address address, GPRReg oldGPR, GPRReg scratchGPR, const Functor& functor)
{
Width accessWidth = this->accessWidth(op);
// We need a CAS loop or a LL/SC loop. Using prepare/attempt jargon, we want:
//
// Block #reloop:
// Prepare
// Operation
// Attempt
// Successors: Then:#done, Else:#reloop
// Block #done:
// Move oldValue, result
// Prepare
auto reloopLabel = m_jit.label();
switch (accessWidth) {
case Width8:
#if CPU(ARM64)
m_jit.loadLinkAcq8(address, oldGPR);
#else
m_jit.load8SignedExtendTo32(address, oldGPR);
#endif
break;
case Width16:
#if CPU(ARM64)
m_jit.loadLinkAcq16(address, oldGPR);
#else
m_jit.load16SignedExtendTo32(address, oldGPR);
#endif
break;
case Width32:
#if CPU(ARM64)
m_jit.loadLinkAcq32(address, oldGPR);
#else
m_jit.load32(address, oldGPR);
#endif
break;
case Width64:
#if CPU(ARM64)
m_jit.loadLinkAcq64(address, oldGPR);
#else
m_jit.load64(address, oldGPR);
#endif
break;
case Width128:
RELEASE_ASSERT_NOT_REACHED();
}
// Operation
functor(oldGPR, scratchGPR);
#if CPU(X86_64)
switch (accessWidth) {
case Width8:
m_jit.branchAtomicStrongCAS8(StatusCondition::Failure, oldGPR, scratchGPR, address).linkTo(reloopLabel, &m_jit);
break;
case Width16:
m_jit.branchAtomicStrongCAS16(StatusCondition::Failure, oldGPR, scratchGPR, address).linkTo(reloopLabel, &m_jit);
break;
case Width32:
m_jit.branchAtomicStrongCAS32(StatusCondition::Failure, oldGPR, scratchGPR, address).linkTo(reloopLabel, &m_jit);
break;
case Width64:
m_jit.branchAtomicStrongCAS64(StatusCondition::Failure, oldGPR, scratchGPR, address).linkTo(reloopLabel, &m_jit);
break;
case Width128:
RELEASE_ASSERT_NOT_REACHED();
}
#elif CPU(ARM64)
switch (accessWidth) {
case Width8:
m_jit.storeCondRel8(scratchGPR, address, scratchGPR);
break;
case Width16:
m_jit.storeCondRel16(scratchGPR, address, scratchGPR);
break;
case Width32:
m_jit.storeCondRel32(scratchGPR, address, scratchGPR);
break;
case Width64:
m_jit.storeCondRel64(scratchGPR, address, scratchGPR);
break;
case Width128:
RELEASE_ASSERT_NOT_REACHED();
}
m_jit.branchTest32(ResultCondition::NonZero, scratchGPR).linkTo(reloopLabel, &m_jit);
#endif
}
[[nodiscard]] Value BBQJIT::emitAtomicLoadOp(ExtAtomicOpType loadOp, Type valueType, Location pointer, uint32_t uoffset)
{
ASSERT(pointer.isGPR());
// For Atomic access, we need SimpleAddress (uoffset = 0).
if (uoffset)
m_jit.add64(TrustedImm64(static_cast<int64_t>(uoffset)), pointer.asGPR());
Address address = Address(pointer.asGPR());
if (accessWidth(loadOp) != Width8)
recordJumpToThrowException(ExceptionType::UnalignedMemoryAccess, m_jit.branchTest64(ResultCondition::NonZero, pointer.asGPR(), TrustedImm64(sizeOfAtomicOpMemoryAccess(loadOp) - 1)));
Value result = topValue(valueType.kind);
Location resultLocation = allocate(result);
if (!(isARM64_LSE() || isX86_64())) {
ScratchScope<1, 0> scratches(*this);
emitAtomicOpGeneric(loadOp, address, resultLocation.asGPR(), scratches.gpr(0), [&](GPRReg oldGPR, GPRReg newGPR) {
emitSanitizeAtomicResult(loadOp, canonicalWidth(accessWidth(loadOp)) == Width64 ? TypeKind::I64 : TypeKind::I32, oldGPR, newGPR);
});
emitSanitizeAtomicResult(loadOp, valueType.kind, resultLocation.asGPR());
return result;
}
m_jit.move(TrustedImm32(0), resultLocation.asGPR());
switch (loadOp) {
case ExtAtomicOpType::I32AtomicLoad: {
#if CPU(ARM64)
m_jit.atomicXchgAdd32(resultLocation.asGPR(), address, resultLocation.asGPR());
#else
m_jit.atomicXchgAdd32(resultLocation.asGPR(), address);
#endif
break;
}
case ExtAtomicOpType::I64AtomicLoad: {
#if CPU(ARM64)
m_jit.atomicXchgAdd64(resultLocation.asGPR(), address, resultLocation.asGPR());
#else
m_jit.atomicXchgAdd64(resultLocation.asGPR(), address);
#endif
break;
}
case ExtAtomicOpType::I32AtomicLoad8U: {
#if CPU(ARM64)
m_jit.atomicXchgAdd8(resultLocation.asGPR(), address, resultLocation.asGPR());
#else
m_jit.atomicXchgAdd8(resultLocation.asGPR(), address);
#endif
break;
}
case ExtAtomicOpType::I32AtomicLoad16U: {
#if CPU(ARM64)
m_jit.atomicXchgAdd16(resultLocation.asGPR(), address, resultLocation.asGPR());
#else
m_jit.atomicXchgAdd16(resultLocation.asGPR(), address);
#endif
break;
}
case ExtAtomicOpType::I64AtomicLoad8U: {
#if CPU(ARM64)
m_jit.atomicXchgAdd8(resultLocation.asGPR(), address, resultLocation.asGPR());
#else
m_jit.atomicXchgAdd8(resultLocation.asGPR(), address);
#endif
break;
}
case ExtAtomicOpType::I64AtomicLoad16U: {
#if CPU(ARM64)
m_jit.atomicXchgAdd16(resultLocation.asGPR(), address, resultLocation.asGPR());
#else
m_jit.atomicXchgAdd16(resultLocation.asGPR(), address);
#endif
break;
}
case ExtAtomicOpType::I64AtomicLoad32U: {
#if CPU(ARM64)
m_jit.atomicXchgAdd32(resultLocation.asGPR(), address, resultLocation.asGPR());
#else
m_jit.atomicXchgAdd32(resultLocation.asGPR(), address);
#endif
break;
}
default:
RELEASE_ASSERT_NOT_REACHED();
break;
}
emitSanitizeAtomicResult(loadOp, valueType.kind, resultLocation.asGPR());
return result;
}
void BBQJIT::emitAtomicStoreOp(ExtAtomicOpType storeOp, Type, Location pointer, Value value, uint32_t uoffset)
{
ASSERT(pointer.isGPR());
// For Atomic access, we need SimpleAddress (uoffset = 0).
if (uoffset)
m_jit.add64(TrustedImm64(static_cast<int64_t>(uoffset)), pointer.asGPR());
Address address = Address(pointer.asGPR());
if (accessWidth(storeOp) != Width8)
recordJumpToThrowException(ExceptionType::UnalignedMemoryAccess, m_jit.branchTest64(ResultCondition::NonZero, pointer.asGPR(), TrustedImm64(sizeOfAtomicOpMemoryAccess(storeOp) - 1)));
GPRReg scratch1GPR = InvalidGPRReg;
GPRReg scratch2GPR = InvalidGPRReg;
Location valueLocation;
if (value.isConst()) {
ScratchScope<3, 0> scratches(*this);
valueLocation = Location::fromGPR(scratches.gpr(0));
emitMoveConst(value, valueLocation);
scratch1GPR = scratches.gpr(1);
scratch2GPR = scratches.gpr(2);
} else {
ScratchScope<2, 0> scratches(*this);
valueLocation = loadIfNecessary(value);
scratch1GPR = scratches.gpr(0);
scratch2GPR = scratches.gpr(1);
}
ASSERT(valueLocation.isRegister());
consume(value);
if (!(isARM64_LSE() || isX86_64())) {
emitAtomicOpGeneric(storeOp, address, scratch1GPR, scratch2GPR, [&](GPRReg, GPRReg newGPR) {
m_jit.move(valueLocation.asGPR(), newGPR);
});
return;
}
switch (storeOp) {
case ExtAtomicOpType::I32AtomicStore: {
#if CPU(ARM64)
m_jit.atomicXchg32(valueLocation.asGPR(), address, scratch1GPR);
#else
m_jit.store32(valueLocation.asGPR(), address);
#endif
break;
}
case ExtAtomicOpType::I64AtomicStore: {
#if CPU(ARM64)
m_jit.atomicXchg64(valueLocation.asGPR(), address, scratch1GPR);
#else
m_jit.store64(valueLocation.asGPR(), address);
#endif
break;
}
case ExtAtomicOpType::I32AtomicStore8U: {
#if CPU(ARM64)
m_jit.atomicXchg8(valueLocation.asGPR(), address, scratch1GPR);
#else
m_jit.store8(valueLocation.asGPR(), address);
#endif
break;
}
case ExtAtomicOpType::I32AtomicStore16U: {
#if CPU(ARM64)
m_jit.atomicXchg16(valueLocation.asGPR(), address, scratch1GPR);
#else
m_jit.store16(valueLocation.asGPR(), address);
#endif
break;
}
case ExtAtomicOpType::I64AtomicStore8U: {
#if CPU(ARM64)
m_jit.atomicXchg8(valueLocation.asGPR(), address, scratch1GPR);
#else
m_jit.store8(valueLocation.asGPR(), address);
#endif
break;
}
case ExtAtomicOpType::I64AtomicStore16U: {
#if CPU(ARM64)
m_jit.atomicXchg16(valueLocation.asGPR(), address, scratch1GPR);
#else
m_jit.store16(valueLocation.asGPR(), address);
#endif
break;
}
case ExtAtomicOpType::I64AtomicStore32U: {
#if CPU(ARM64)
m_jit.atomicXchg32(valueLocation.asGPR(), address, scratch1GPR);
#else
m_jit.store32(valueLocation.asGPR(), address);
#endif
break;
}
default:
RELEASE_ASSERT_NOT_REACHED();
break;
}
}
Value BBQJIT::emitAtomicBinaryRMWOp(ExtAtomicOpType op, Type valueType, Location pointer, Value value, uint32_t uoffset)
{
ASSERT(pointer.isGPR());
// For Atomic access, we need SimpleAddress (uoffset = 0).
if (uoffset)
m_jit.add64(TrustedImm64(static_cast<int64_t>(uoffset)), pointer.asGPR());
Address address = Address(pointer.asGPR());
if (accessWidth(op) != Width8)
recordJumpToThrowException(ExceptionType::UnalignedMemoryAccess, m_jit.branchTest64(ResultCondition::NonZero, pointer.asGPR(), TrustedImm64(sizeOfAtomicOpMemoryAccess(op) - 1)));
Value result = topValue(valueType.kind);
Location resultLocation = allocate(result);
GPRReg scratchGPR = InvalidGPRReg;
Location valueLocation;
if (value.isConst()) {
ScratchScope<2, 0> scratches(*this);
valueLocation = Location::fromGPR(scratches.gpr(0));
emitMoveConst(value, valueLocation);
scratchGPR = scratches.gpr(1);
} else {
ScratchScope<1, 0> scratches(*this);
valueLocation = loadIfNecessary(value);
scratchGPR = scratches.gpr(0);
}
ASSERT(valueLocation.isRegister());
consume(value);
switch (op) {
case ExtAtomicOpType::I32AtomicRmw8AddU:
case ExtAtomicOpType::I32AtomicRmw16AddU:
case ExtAtomicOpType::I32AtomicRmwAdd:
case ExtAtomicOpType::I64AtomicRmw8AddU:
case ExtAtomicOpType::I64AtomicRmw16AddU:
case ExtAtomicOpType::I64AtomicRmw32AddU:
case ExtAtomicOpType::I64AtomicRmwAdd:
if (isX86() || isARM64_LSE()) {
switch (accessWidth(op)) {
case Width8:
#if CPU(ARM64)
m_jit.atomicXchgAdd8(valueLocation.asGPR(), address, resultLocation.asGPR());
#else
m_jit.move(valueLocation.asGPR(), resultLocation.asGPR());
m_jit.atomicXchgAdd8(resultLocation.asGPR(), address);
#endif
break;
case Width16:
#if CPU(ARM64)
m_jit.atomicXchgAdd16(valueLocation.asGPR(), address, resultLocation.asGPR());
#else
m_jit.move(valueLocation.asGPR(), resultLocation.asGPR());
m_jit.atomicXchgAdd16(resultLocation.asGPR(), address);
#endif
break;
case Width32:
#if CPU(ARM64)
m_jit.atomicXchgAdd32(valueLocation.asGPR(), address, resultLocation.asGPR());
#else
m_jit.move(valueLocation.asGPR(), resultLocation.asGPR());
m_jit.atomicXchgAdd32(resultLocation.asGPR(), address);
#endif
break;
case Width64:
#if CPU(ARM64)
m_jit.atomicXchgAdd64(valueLocation.asGPR(), address, resultLocation.asGPR());
#else
m_jit.move(valueLocation.asGPR(), resultLocation.asGPR());
m_jit.atomicXchgAdd64(resultLocation.asGPR(), address);
#endif
break;
default:
RELEASE_ASSERT_NOT_REACHED();
break;
}
emitSanitizeAtomicResult(op, valueType.kind, resultLocation.asGPR());
return result;
}
break;
case ExtAtomicOpType::I32AtomicRmw8SubU:
case ExtAtomicOpType::I32AtomicRmw16SubU:
case ExtAtomicOpType::I32AtomicRmwSub:
case ExtAtomicOpType::I64AtomicRmw8SubU:
case ExtAtomicOpType::I64AtomicRmw16SubU:
case ExtAtomicOpType::I64AtomicRmw32SubU:
case ExtAtomicOpType::I64AtomicRmwSub:
if (isX86() || isARM64_LSE()) {
m_jit.move(valueLocation.asGPR(), scratchGPR);
if (valueType.isI64())
m_jit.neg64(scratchGPR);
else
m_jit.neg32(scratchGPR);
switch (accessWidth(op)) {
case Width8:
#if CPU(ARM64)
m_jit.atomicXchgAdd8(scratchGPR, address, resultLocation.asGPR());
#else
m_jit.move(scratchGPR, resultLocation.asGPR());
m_jit.atomicXchgAdd8(resultLocation.asGPR(), address);
#endif
break;
case Width16:
#if CPU(ARM64)
m_jit.atomicXchgAdd16(scratchGPR, address, resultLocation.asGPR());
#else
m_jit.move(scratchGPR, resultLocation.asGPR());
m_jit.atomicXchgAdd16(resultLocation.asGPR(), address);
#endif
break;
case Width32:
#if CPU(ARM64)
m_jit.atomicXchgAdd32(scratchGPR, address, resultLocation.asGPR());
#else
m_jit.move(scratchGPR, resultLocation.asGPR());
m_jit.atomicXchgAdd32(resultLocation.asGPR(), address);
#endif
break;
case Width64:
#if CPU(ARM64)
m_jit.atomicXchgAdd64(scratchGPR, address, resultLocation.asGPR());
#else
m_jit.move(scratchGPR, resultLocation.asGPR());
m_jit.atomicXchgAdd64(resultLocation.asGPR(), address);
#endif
break;
default:
RELEASE_ASSERT_NOT_REACHED();
break;
}
emitSanitizeAtomicResult(op, valueType.kind, resultLocation.asGPR());
return result;
}
break;
case ExtAtomicOpType::I32AtomicRmw8AndU:
case ExtAtomicOpType::I32AtomicRmw16AndU:
case ExtAtomicOpType::I32AtomicRmwAnd:
case ExtAtomicOpType::I64AtomicRmw8AndU:
case ExtAtomicOpType::I64AtomicRmw16AndU:
case ExtAtomicOpType::I64AtomicRmw32AndU:
case ExtAtomicOpType::I64AtomicRmwAnd:
#if CPU(ARM64)
if (isARM64_LSE()) {
m_jit.move(valueLocation.asGPR(), scratchGPR);
if (valueType.isI64())
m_jit.not64(scratchGPR);
else
m_jit.not32(scratchGPR);
switch (accessWidth(op)) {
case Width8:
m_jit.atomicXchgClear8(scratchGPR, address, resultLocation.asGPR());
break;
case Width16:
m_jit.atomicXchgClear16(scratchGPR, address, resultLocation.asGPR());
break;
case Width32:
m_jit.atomicXchgClear32(scratchGPR, address, resultLocation.asGPR());
break;
case Width64:
m_jit.atomicXchgClear64(scratchGPR, address, resultLocation.asGPR());
break;
default:
RELEASE_ASSERT_NOT_REACHED();