#include "config.h"
#include "FTLJITCode.h"
#if ENABLE(FTL_JIT)
#include "FTLState.h"
namespace JSC { namespace FTL {
using namespace B3;
JITCode::JITCode()
: JSC::JITCode(FTLJIT)
{
}
JITCode::~JITCode()
{
if (FTL::shouldDumpDisassembly()) {
dataLog("Destroying FTL JIT code at ");
CommaPrinter comma;
dataLog(comma, m_b3Code);
dataLog(comma, m_arityCheckEntrypoint);
dataLog("\n");
}
}
void JITCode::initializeB3Code(CodeRef b3Code)
{
m_b3Code = b3Code;
}
void JITCode::initializeB3Byproducts(std::unique_ptr<OpaqueByproducts> byproducts)
{
m_b3Byproducts = WTFMove(byproducts);
}
void JITCode::initializeAddressForCall(CodePtr address)
{
m_addressForCall = address;
}
void JITCode::initializeArityCheckEntrypoint(CodeRef entrypoint)
{
m_arityCheckEntrypoint = entrypoint;
}
JITCode::CodePtr JITCode::addressForCall(ArityCheckMode arityCheck)
{
switch (arityCheck) {
case ArityCheckNotRequired:
return m_addressForCall;
case MustCheckArity:
return m_arityCheckEntrypoint.code();
}
RELEASE_ASSERT_NOT_REACHED();
return CodePtr();
}
void* JITCode::executableAddressAtOffset(size_t offset)
{
return reinterpret_cast<char*>(m_addressForCall.executableAddress()) + offset;
}
void* JITCode::dataAddressAtOffset(size_t)
{
RELEASE_ASSERT_NOT_REACHED();
return 0;
}
unsigned JITCode::offsetOf(void*)
{
RELEASE_ASSERT_NOT_REACHED();
return 0;
}
size_t JITCode::size()
{
return 1000;
}
bool JITCode::contains(void*)
{
RELEASE_ASSERT_NOT_REACHED();
return false;
}
JITCode* JITCode::ftl()
{
return this;
}
DFG::CommonData* JITCode::dfgCommon()
{
return &common;
}
void JITCode::validateReferences(const TrackedReferences& trackedReferences)
{
common.validateReferences(trackedReferences);
for (OSRExit& exit : osrExit)
exit.m_descriptor->validateReferences(trackedReferences);
}
RegisterSet JITCode::liveRegistersToPreserveAtExceptionHandlingCallSite(CodeBlock*, CallSiteIndex callSiteIndex)
{
for (OSRExit& exit : osrExit) {
if (exit.m_exceptionHandlerCallSiteIndex.bits() == callSiteIndex.bits()) {
RELEASE_ASSERT(exit.isExceptionHandler());
RELEASE_ASSERT(exit.isGenericUnwindHandler());
return ValueRep::usedRegisters(exit.m_valueReps);
}
}
return RegisterSet();
}
std::optional<CodeOrigin> JITCode::findPC(CodeBlock* codeBlock, void* pc)
{
for (OSRExit& exit : osrExit) {
if (ExecutableMemoryHandle* handle = exit.m_code.executableMemory()) {
if (handle->start() <= pc && pc < handle->end())
return std::optional<CodeOrigin>(exit.m_codeOriginForExitProfile);
}
}
for (std::unique_ptr<LazySlowPath>& lazySlowPath : lazySlowPaths) {
if (ExecutableMemoryHandle* handle = lazySlowPath->stub().executableMemory()) {
if (handle->start() <= pc && pc < handle->end())
return std::optional<CodeOrigin>(codeBlock->codeOrigin(lazySlowPath->callSiteIndex()));
}
}
return std::nullopt;
}
} }
#endif // ENABLE(FTL_JIT)