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335 lines (285 loc) · 9.5 KB
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/*
* Copyright (C) 2008-2023 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 "JITCode.h"
#include "DFGJITCode.h"
#include "FTLJITCode.h"
#include <wtf/PrintStream.h>
WTF_ALLOW_UNSAFE_BUFFER_USAGE_BEGIN
namespace JSC {
DEFINE_ALLOCATOR_WITH_HEAP_IDENTIFIER(DirectJITCode);
JITCode::JITCode(JITType jitType, CodePtr<JSEntryPtrTag> code, ShareAttribute shareAttribute)
: m_jitType(jitType)
, m_shareAttribute(shareAttribute)
, m_addressForCall(code)
{
}
JITCode::~JITCode() = default;
ASCIILiteral JITCode::typeName(JITType jitType)
{
switch (jitType) {
case JITType::None:
return "None"_s;
case JITType::HostCallThunk:
return "Host"_s;
case JITType::InterpreterThunk:
return "LLInt"_s;
case JITType::BaselineJIT:
return "Baseline"_s;
case JITType::DFGJIT:
return "DFG"_s;
case JITType::FTLJIT:
return "FTL"_s;
default:
CRASH();
return ""_s;
}
}
bool JITCode::isUnlinked() const
{
switch (m_jitType) {
case JITType::None:
case JITType::HostCallThunk:
case JITType::InterpreterThunk:
case JITType::BaselineJIT:
return true;
case JITType::DFGJIT:
#if ENABLE(DFG_JIT)
return static_cast<const DFG::JITCode*>(this)->isUnlinked();
#else
return false;
#endif
case JITType::FTLJIT:
#if ENABLE(FTL_JIT)
return static_cast<const FTL::JITCode*>(this)->isUnlinked();
#else
return false;
#endif
}
return true;
}
void JITCode::validateReferences(const TrackedReferences&)
{
}
DFG::CommonData* JITCode::dfgCommon()
{
RELEASE_ASSERT_NOT_REACHED();
return nullptr;
}
const DFG::CommonData* JITCode::dfgCommon() const
{
RELEASE_ASSERT_NOT_REACHED();
return nullptr;
}
DFG::JITCode* JITCode::dfg()
{
RELEASE_ASSERT_NOT_REACHED();
return nullptr;
}
FTL::JITCode* JITCode::ftl()
{
RELEASE_ASSERT_NOT_REACHED();
return nullptr;
}
FTL::ForOSREntryJITCode* JITCode::ftlForOSREntry()
{
RELEASE_ASSERT_NOT_REACHED();
return nullptr;
}
void JITCode::shrinkToFit()
{
}
const RegisterAtOffsetList* JITCode::calleeSaveRegisters() const
{
#if ENABLE(FTL_JIT)
if (m_jitType == JITType::FTLJIT)
return static_cast<const FTL::JITCode*>(this)->calleeSaveRegisters();
#endif
#if ENABLE(DFG_JIT)
if (m_jitType == JITType::DFGJIT)
return &RegisterAtOffsetList::dfgCalleeSaveRegisters();
#endif
#if !ENABLE(C_LOOP)
return &RegisterAtOffsetList::llintBaselineCalleeSaveRegisters();
#else
return nullptr;
#endif
}
JITCode::CodeRef<JSEntryPtrTag> JITCode::swapCodeRefForDebugger(JITCode::CodeRef<JSEntryPtrTag>)
{
return CodeRef<JSEntryPtrTag>();
}
CodePtr<JSEntryPtrTag> JITCode::swapCodePtrWithArityCheckForDebugger(CodePtr<JSEntryPtrTag>)
{
return CodePtr<JSEntryPtrTag>();
}
JITCodeWithCodeRef::JITCodeWithCodeRef(JITType jitType)
: JITCode(jitType)
{
}
JITCodeWithCodeRef::JITCodeWithCodeRef(CodeRef<JSEntryPtrTag> ref, JITType jitType, JITCode::ShareAttribute shareAttribute)
: JITCode(jitType, ref.code(), shareAttribute)
, m_executableMemory(ref.executableMemory())
{
}
JITCodeWithCodeRef::~JITCodeWithCodeRef()
{
if ((Options::dumpDisassembly() || ((jitType() == JITType::BaselineJIT) && Options::dumpBaselineDisassembly()) || (isOptimizingJIT(jitType()) && Options::dumpDFGDisassembly()))
&& m_executableMemory)
dataLog("Destroying JIT code at ", pointerDump(m_executableMemory.get()), "\n");
}
void* JITCodeWithCodeRef::executableAddressAtOffset(size_t offset)
{
RELEASE_ASSERT(m_addressForCall);
assertIsTaggedWith<JSEntryPtrTag>(m_addressForCall.taggedPtr());
if (!offset)
return m_addressForCall.taggedPtr();
char* executableAddress = untagCodePtr<char*, JSEntryPtrTag>(m_addressForCall.taggedPtr());
return tagCodePtr<JSEntryPtrTag>(executableAddress + offset);
}
void* JITCodeWithCodeRef::dataAddressAtOffset(size_t offset)
{
RELEASE_ASSERT(m_addressForCall);
ASSERT(offset <= size()); // use <= instead of < because it is valid to ask for an address at the exclusive end of the code.
return m_addressForCall.dataLocation<char*>() + offset;
}
unsigned JITCodeWithCodeRef::offsetOf(void* pointerIntoCode)
{
RELEASE_ASSERT(m_addressForCall);
intptr_t result = reinterpret_cast<intptr_t>(pointerIntoCode) - m_addressForCall.taggedPtr<intptr_t>();
ASSERT(static_cast<intptr_t>(static_cast<unsigned>(result)) == result);
return static_cast<unsigned>(result);
}
size_t JITCodeWithCodeRef::size()
{
if (auto* memory = m_executableMemory.get())
return memory->sizeInBytes();
return 0;
}
bool JITCodeWithCodeRef::contains(void* address)
{
RELEASE_ASSERT(m_executableMemory);
return m_executableMemory->contains(address);
}
JITCode::CodeRef<JSEntryPtrTag> JITCodeWithCodeRef::swapCodeRefForDebugger(JITCode::CodeRef<JSEntryPtrTag> ref)
{
ASSERT(canSwapCodeRefForDebugger());
RELEASE_ASSERT(m_addressForCall);
RELEASE_ASSERT(ref);
CodeRef<JSEntryPtrTag> old;
if (m_executableMemory) {
old = CodeRef<JSEntryPtrTag>(m_executableMemory.releaseNonNull());
RELEASE_ASSERT(old.code() == m_addressForCall);
} else
old = CodeRef<JSEntryPtrTag>::createSelfManagedCodeRef(m_addressForCall);
m_addressForCall = ref.code();
m_executableMemory = ref.executableMemory();
return old;
}
DirectJITCode::DirectJITCode(JITType jitType)
: JITCodeWithCodeRef(jitType)
{
}
DirectJITCode::DirectJITCode(JITCode::CodeRef<JSEntryPtrTag> ref, CodePtr<JSEntryPtrTag> withArityCheck, JITType jitType, JITCode::ShareAttribute shareAttribute)
: JITCodeWithCodeRef(ref, jitType, shareAttribute)
, m_withArityCheck(withArityCheck)
{
ASSERT(m_addressForCall);
ASSERT(m_withArityCheck);
}
DirectJITCode::DirectJITCode(JITCode::CodeRef<JSEntryPtrTag> ref, CodePtr<JSEntryPtrTag> withArityCheck, JITType jitType, Intrinsic intrinsic, JITCode::ShareAttribute shareAttribute)
: JITCodeWithCodeRef(ref, jitType, shareAttribute)
, m_withArityCheck(withArityCheck)
{
m_intrinsic = intrinsic;
ASSERT(m_addressForCall);
ASSERT(m_withArityCheck);
}
DirectJITCode::~DirectJITCode() = default;
void DirectJITCode::initializeCodeRefForDFG(JITCode::CodeRef<JSEntryPtrTag> ref, CodePtr<JSEntryPtrTag> withArityCheck)
{
RELEASE_ASSERT(!m_addressForCall);
m_addressForCall = ref.code();
m_executableMemory = ref.executableMemory();
m_withArityCheck = withArityCheck;
ASSERT(m_addressForCall);
ASSERT(m_withArityCheck);
}
CodePtr<JSEntryPtrTag> DirectJITCode::addressForCall(ArityCheckMode arity)
{
switch (arity) {
case ArityCheckMode::ArityCheckNotRequired:
RELEASE_ASSERT(m_addressForCall);
return m_addressForCall;
case ArityCheckMode::MustCheckArity:
RELEASE_ASSERT(m_withArityCheck);
return m_withArityCheck;
}
RELEASE_ASSERT_NOT_REACHED();
return CodePtr<JSEntryPtrTag>();
}
CodePtr<JSEntryPtrTag> DirectJITCode::swapCodePtrWithArityCheckForDebugger(CodePtr<JSEntryPtrTag> withArityCheck)
{
RELEASE_ASSERT(m_withArityCheck);
RELEASE_ASSERT(withArityCheck);
auto old = m_withArityCheck;
m_withArityCheck = withArityCheck;
return old;
}
NativeJITCode::NativeJITCode(JITType jitType)
: JITCodeWithCodeRef(jitType)
{
}
NativeJITCode::NativeJITCode(CodeRef<JSEntryPtrTag> ref, JITType jitType, Intrinsic intrinsic, JITCode::ShareAttribute shareAttribute)
: JITCodeWithCodeRef(ref, jitType, shareAttribute)
{
m_intrinsic = intrinsic;
}
NativeJITCode::~NativeJITCode() = default;
CodePtr<JSEntryPtrTag> NativeJITCode::addressForCall(ArityCheckMode arity)
{
RELEASE_ASSERT(m_addressForCall);
ASSERT_UNUSED(arity, arity == ArityCheckMode::ArityCheckNotRequired || arity == ArityCheckMode::MustCheckArity);
return m_addressForCall;
}
NativeDOMJITCode::NativeDOMJITCode(CodeRef<JSEntryPtrTag> ref, JITType type, Intrinsic intrinsic, const DOMJIT::Signature* signature)
: NativeJITCode(ref, type, intrinsic)
, m_signature(signature)
{
}
#if ENABLE(JIT)
RegisterSet JITCode::liveRegistersToPreserveAtExceptionHandlingCallSite(CodeBlock*, CallSiteIndex)
{
return { };
}
#endif
} // namespace JSC
namespace WTF {
void printInternal(PrintStream& out, JSC::JITType type)
{
out.print(JSC::JITCode::typeName(type));
}
} // namespace WTF
WTF_ALLOW_UNSAFE_BUFFER_USAGE_END