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253 lines (219 loc) · 6.65 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.
*/
#include "config.h"
#include "JITCode.h"
#include "LLIntThunks.h"
#include "JSCInlines.h"
#include "RegisterPreservationWrapperGenerator.h"
#include <wtf/PrintStream.h>
namespace JSC {
JITCode::JITCode(JITType jitType)
: m_jitType(jitType)
{
}
JITCode::~JITCode()
{
}
JSValue JITCode::execute(VM* vm, ProtoCallFrame* protoCallFrame)
{
JSValue result = JSValue::decode(callToJavaScript(executableAddress(), vm, protoCallFrame));
return vm->exception() ? jsNull() : result;
}
DFG::CommonData* JITCode::dfgCommon()
{
RELEASE_ASSERT_NOT_REACHED();
return 0;
}
DFG::JITCode* JITCode::dfg()
{
RELEASE_ASSERT_NOT_REACHED();
return 0;
}
FTL::JITCode* JITCode::ftl()
{
RELEASE_ASSERT_NOT_REACHED();
return 0;
}
FTL::ForOSREntryJITCode* JITCode::ftlForOSREntry()
{
RELEASE_ASSERT_NOT_REACHED();
return 0;
}
JITCodeWithCodeRef::JITCodeWithCodeRef(JITType jitType)
: JITCode(jitType)
{
}
JITCodeWithCodeRef::JITCodeWithCodeRef(CodeRef ref, JITType jitType)
: JITCode(jitType)
, m_ref(ref)
{
}
JITCodeWithCodeRef::~JITCodeWithCodeRef()
{
}
void* JITCodeWithCodeRef::executableAddressAtOffset(size_t offset)
{
RELEASE_ASSERT(m_ref);
return reinterpret_cast<char*>(m_ref.code().executableAddress()) + offset;
}
void* JITCodeWithCodeRef::dataAddressAtOffset(size_t offset)
{
RELEASE_ASSERT(m_ref);
ASSERT(offset <= size()); // use <= instead of < because it is valid to ask for an address at the exclusive end of the code.
return reinterpret_cast<char*>(m_ref.code().dataLocation()) + offset;
}
unsigned JITCodeWithCodeRef::offsetOf(void* pointerIntoCode)
{
RELEASE_ASSERT(m_ref);
intptr_t result = reinterpret_cast<intptr_t>(pointerIntoCode) - reinterpret_cast<intptr_t>(m_ref.code().executableAddress());
ASSERT(static_cast<intptr_t>(static_cast<unsigned>(result)) == result);
return static_cast<unsigned>(result);
}
size_t JITCodeWithCodeRef::size()
{
RELEASE_ASSERT(m_ref);
return m_ref.size();
}
bool JITCodeWithCodeRef::contains(void* address)
{
RELEASE_ASSERT(m_ref);
return m_ref.executableMemory()->contains(address);
}
DirectJITCode::DirectJITCode(JITType jitType)
: JITCodeWithCodeRef(jitType)
{
}
DirectJITCode::DirectJITCode(JITCode::CodeRef ref, JITCode::CodePtr withArityCheck, JITType jitType)
: JITCodeWithCodeRef(ref, jitType)
, m_withArityCheck(withArityCheck)
{
}
DirectJITCode::~DirectJITCode()
{
}
void DirectJITCode::initializeCodeRef(JITCode::CodeRef ref, JITCode::CodePtr withArityCheck)
{
RELEASE_ASSERT(!m_ref);
m_ref = ref;
m_withArityCheck = withArityCheck;
}
DirectJITCode::RegisterPreservationWrappers* DirectJITCode::ensureWrappers()
{
if (!m_wrappers)
m_wrappers = std::make_unique<RegisterPreservationWrappers>();
return m_wrappers.get();
}
JITCode::CodePtr DirectJITCode::addressForCall(
VM& vm, ExecutableBase* executable, ArityCheckMode arity,
RegisterPreservationMode registers)
{
switch (arity) {
case ArityCheckNotRequired:
switch (registers) {
case RegisterPreservationNotRequired:
RELEASE_ASSERT(m_ref);
return m_ref.code();
case MustPreserveRegisters: {
#if ENABLE(JIT)
RegisterPreservationWrappers* wrappers = ensureWrappers();
if (!wrappers->withoutArityCheck)
wrappers->withoutArityCheck = generateRegisterPreservationWrapper(vm, executable, m_ref.code());
return wrappers->withoutArityCheck.code();
#else
UNUSED_PARAM(vm);
UNUSED_PARAM(executable);
RELEASE_ASSERT_NOT_REACHED();
#endif
} }
case MustCheckArity:
switch (registers) {
case RegisterPreservationNotRequired:
RELEASE_ASSERT(m_withArityCheck);
return m_withArityCheck;
case MustPreserveRegisters: {
#if ENABLE(JIT)
RegisterPreservationWrappers* wrappers = ensureWrappers();
if (!wrappers->withArityCheck)
wrappers->withArityCheck = generateRegisterPreservationWrapper(vm, executable, m_withArityCheck);
return wrappers->withArityCheck.code();
#else
RELEASE_ASSERT_NOT_REACHED();
#endif
} }
}
RELEASE_ASSERT_NOT_REACHED();
return CodePtr();
}
NativeJITCode::NativeJITCode(JITType jitType)
: JITCodeWithCodeRef(jitType)
{
}
NativeJITCode::NativeJITCode(CodeRef ref, JITType jitType)
: JITCodeWithCodeRef(ref, jitType)
{
}
NativeJITCode::~NativeJITCode()
{
}
void NativeJITCode::initializeCodeRef(CodeRef ref)
{
ASSERT(!m_ref);
m_ref = ref;
}
JITCode::CodePtr NativeJITCode::addressForCall(
VM&, ExecutableBase*, ArityCheckMode, RegisterPreservationMode)
{
RELEASE_ASSERT(!!m_ref);
return m_ref.code();
}
} // namespace JSC
namespace WTF {
void printInternal(PrintStream& out, JSC::JITCode::JITType type)
{
switch (type) {
case JSC::JITCode::None:
out.print("None");
return;
case JSC::JITCode::HostCallThunk:
out.print("Host");
return;
case JSC::JITCode::InterpreterThunk:
out.print("LLInt");
return;
case JSC::JITCode::BaselineJIT:
out.print("Baseline");
return;
case JSC::JITCode::DFGJIT:
out.print("DFG");
return;
case JSC::JITCode::FTLJIT:
out.print("FTL");
return;
default:
CRASH();
return;
}
}
} // namespace WTF