WebKit/Source/JavaScriptCore/llint/LLIntEntrypoint.cpp at main · WebKit/WebKit · GitHub

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* 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 "LLIntEntrypoint.h"

#include "CodeBlock.h"

#include "HeapInlines.h"

#include "JITCode.h"

#include "JSCellInlines.h"

#include "LLIntData.h"

#include "LLIntThunks.h"

#include "MaxFrameExtentForSlowPathCall.h"

#include "StackAlignment.h"

namespace JSC { namespace LLInt {

#if CPU(ARM64E) && !ENABLE(C_LOOP)

extern "C" void jsTrampolineProgramPrologue(void);

extern "C" void jsTrampolineModuleProgramPrologue(void);

extern "C" void jsTrampolineEvalPrologue(void);

extern "C" void jsTrampolineFunctionForCallPrologue(void);

extern "C" void jsTrampolineFunctionForConstructPrologue(void);

extern "C" void jsTrampolineFunctionForCallArityCheckPrologue(void);

extern "C" void jsTrampolineFunctionForConstructArityCheckPrologue(void);

template<typename PtrType>

static MacroAssemblerCodeRef<JSEntryPtrTag> entrypointTrampoline(PtrType address)

{

return MacroAssemblerCodeRef<JSEntryPtrTag>::createSelfManagedCodeRef(CodePtr<JSEntryPtrTag>::fromTaggedPtr(retagCodePtr<void*, CFunctionPtrTag, JSEntryPtrTag>(address)));

}

#endif

static void setFunctionEntrypoint(CodeBlock* codeBlock)

{

CodeSpecializationKind kind = codeBlock->specializationKind();

#if ENABLE(JIT)

if (Options::useJIT()) {

if (kind == CodeSpecializationKind::CodeForCall) {

static DirectJITCode* jitCode;

static std::once_flag onceKey;

std::call_once(onceKey, [&] {

auto callRef = functionForCallEntryThunk();

auto callArityCheckRef = functionForCallArityCheckThunk();

jitCode = new DirectJITCode(callRef, callArityCheckRef.code(), JITType::InterpreterThunk, JITCode::ShareAttribute::Shared);

});

codeBlock->setJITCode(*jitCode);

return;

}

ASSERT(kind == CodeSpecializationKind::CodeForConstruct);

static DirectJITCode* jitCode;

static std::once_flag onceKey;

std::call_once(onceKey, [&] {

auto constructRef = functionForConstructEntryThunk();

auto constructArityCheckRef = functionForConstructArityCheckThunk();

jitCode = new DirectJITCode(constructRef, constructArityCheckRef.code(), JITType::InterpreterThunk, JITCode::ShareAttribute::Shared);

});

codeBlock->setJITCode(*jitCode);

return;

}

#endif // ENABLE(JIT)

if (kind == CodeSpecializationKind::CodeForCall) {

static DirectJITCode* jitCode;

static std::once_flag onceKey;

std::call_once(onceKey, [&] {

#if CPU(ARM64E) && !ENABLE(C_LOOP)

jitCode = new DirectJITCode(entrypointTrampoline(jsTrampolineFunctionForCallPrologue), entrypointTrampoline(jsTrampolineFunctionForCallArityCheckPrologue).code(), JITType::InterpreterThunk, JITCode::ShareAttribute::Shared);

#else

jitCode = new DirectJITCode(getCodeRef<JSEntryPtrTag>(llint_function_for_call_prologue), getCodePtr<JSEntryPtrTag>(llint_function_for_call_arity_check), JITType::InterpreterThunk, JITCode::ShareAttribute::Shared);

#endif

});

codeBlock->setJITCode(*jitCode);

} else {

static DirectJITCode* jitCode;

static std::once_flag onceKey;

std::call_once(onceKey, [&] {

#if CPU(ARM64E) && !ENABLE(C_LOOP)

jitCode = new DirectJITCode(entrypointTrampoline(jsTrampolineFunctionForConstructPrologue), entrypointTrampoline(jsTrampolineFunctionForConstructArityCheckPrologue).code(), JITType::InterpreterThunk, JITCode::ShareAttribute::Shared);

#else

jitCode = new DirectJITCode(getCodeRef<JSEntryPtrTag>(llint_function_for_construct_prologue), getCodePtr<JSEntryPtrTag>(llint_function_for_construct_arity_check), JITType::InterpreterThunk, JITCode::ShareAttribute::Shared);

#endif

});

codeBlock->setJITCode(*jitCode);

}

static void setEvalEntrypoint(CodeBlock* codeBlock)

{

#if ENABLE(JIT)

if (Options::useJIT()) {

static NativeJITCode* jitCode;

static std::once_flag onceKey;

std::call_once(onceKey, [&] {

MacroAssemblerCodeRef<JSEntryPtrTag> codeRef = evalEntryThunk();

jitCode = new NativeJITCode(codeRef, JITType::InterpreterThunk, Intrinsic::NoIntrinsic, JITCode::ShareAttribute::Shared);

});

codeBlock->setJITCode(*jitCode);

return;

}

#endif // ENABLE(JIT)

static NativeJITCode* jitCode;

static std::once_flag onceKey;

std::call_once(onceKey, [&] {

#if CPU(ARM64E) && !ENABLE(C_LOOP)

jitCode = new NativeJITCode(entrypointTrampoline(jsTrampolineEvalPrologue), JITType::InterpreterThunk, Intrinsic::NoIntrinsic, JITCode::ShareAttribute::Shared);

#else

jitCode = new NativeJITCode(getCodeRef<JSEntryPtrTag>(llint_eval_prologue), JITType::InterpreterThunk, Intrinsic::NoIntrinsic, JITCode::ShareAttribute::Shared);

#endif

});

codeBlock->setJITCode(*jitCode);

}

static void setProgramEntrypoint(CodeBlock* codeBlock)

{

#if ENABLE(JIT)

if (Options::useJIT()) {

static NativeJITCode* jitCode;

static std::once_flag onceKey;

std::call_once(onceKey, [&] {

MacroAssemblerCodeRef<JSEntryPtrTag> codeRef = programEntryThunk();

jitCode = new NativeJITCode(codeRef, JITType::InterpreterThunk, Intrinsic::NoIntrinsic, JITCode::ShareAttribute::Shared);

});

codeBlock->setJITCode(*jitCode);

return;

}

#endif // ENABLE(JIT)

static NativeJITCode* jitCode;

static std::once_flag onceKey;

std::call_once(onceKey, [&] {

#if CPU(ARM64E) && !ENABLE(C_LOOP)

jitCode = new NativeJITCode(entrypointTrampoline(jsTrampolineProgramPrologue), JITType::InterpreterThunk, Intrinsic::NoIntrinsic, JITCode::ShareAttribute::Shared);

#else

jitCode = new NativeJITCode(getCodeRef<JSEntryPtrTag>(llint_program_prologue), JITType::InterpreterThunk, Intrinsic::NoIntrinsic, JITCode::ShareAttribute::Shared);

#endif

});

codeBlock->setJITCode(*jitCode);

}

static void setModuleProgramEntrypoint(CodeBlock* codeBlock)

{

#if ENABLE(JIT)

if (Options::useJIT()) {

static NativeJITCode* jitCode;

static std::once_flag onceKey;

std::call_once(onceKey, [&] {

MacroAssemblerCodeRef<JSEntryPtrTag> codeRef = moduleProgramEntryThunk();

jitCode = new NativeJITCode(codeRef, JITType::InterpreterThunk, Intrinsic::NoIntrinsic, JITCode::ShareAttribute::Shared);

});

codeBlock->setJITCode(*jitCode);

return;

}

#endif // ENABLE(JIT)

static NativeJITCode* jitCode;

static std::once_flag onceKey;

std::call_once(onceKey, [&] {

#if CPU(ARM64E) && !ENABLE(C_LOOP)

jitCode = new NativeJITCode(entrypointTrampoline(jsTrampolineModuleProgramPrologue), JITType::InterpreterThunk, Intrinsic::NoIntrinsic, JITCode::ShareAttribute::Shared);

#else

jitCode = new NativeJITCode(getCodeRef<JSEntryPtrTag>(llint_module_program_prologue), JITType::InterpreterThunk, Intrinsic::NoIntrinsic, JITCode::ShareAttribute::Shared);

#endif

});

codeBlock->setJITCode(*jitCode);

}

MacroAssemblerCodeRef<JSEntryPtrTag> defaultCall()

{

#if ENABLE(JIT)

if (Options::useJIT())

return defaultCallThunk();

#endif // ENABLE(JIT)

return LLInt::getCodeRef<JSEntryPtrTag>(llint_default_call_trampoline);

}

CodePtr<JITThunkPtrTag> arityFixup()

{

#if ENABLE(JIT)

if (Options::useJIT())

return CodePtr<JITThunkPtrTag>::fromTaggedPtr(g_jscConfig.arityFixupThunk);

#endif

return nullptr;

}

MacroAssemblerCodeRef<JSEntryPtrTag> getHostCallReturnValueEntrypoint()

{

#if ENABLE(JIT)

if (Options::useJIT())

return getHostCallReturnValueThunk();

#endif // ENABLE(JIT)

return LLInt::getCodeRef<JSEntryPtrTag>(llint_get_host_call_return_value);

}

MacroAssemblerCodeRef<JSEntryPtrTag> fuzzerReturnEarlyFromLoopHintEntrypoint()

{

#if ENABLE(JIT)

if (Options::useJIT())

return fuzzerReturnEarlyFromLoopHintThunk();

#endif // ENABLE(JIT)

return LLInt::getCodeRef<JSEntryPtrTag>(fuzzer_return_early_from_loop_hint);

}

MacroAssemblerCodeRef<JSEntryPtrTag> genericReturnPointEntrypoint(OpcodeSize size)

{

#if ENABLE(JIT)

if (Options::useJIT())

return genericReturnPointThunk(size);

#endif // ENABLE(JIT)

switch (size) {

case OpcodeSize::Narrow:

return LLInt::getCodeRef<JSEntryPtrTag>(llint_generic_return_point);

case OpcodeSize::Wide16:

return LLInt::getWide16CodeRef<JSEntryPtrTag>(llint_generic_return_point);

case OpcodeSize::Wide32:

return LLInt::getWide32CodeRef<JSEntryPtrTag>(llint_generic_return_point);

}

RELEASE_ASSERT_NOT_REACHED();

return { };

}

void setEntrypoint(CodeBlock* codeBlock)

{

switch (codeBlock->codeType()) {

case GlobalCode:

setProgramEntrypoint(codeBlock);

return;

case ModuleCode:

setModuleProgramEntrypoint(codeBlock);

return;

case EvalCode:

setEvalEntrypoint(codeBlock);

return;

case FunctionCode:

setFunctionEntrypoint(codeBlock);

return;

}

RELEASE_ASSERT_NOT_REACHED();

}

unsigned frameRegisterCountFor(CodeBlock* codeBlock)

{

ASSERT(static_cast<unsigned>(codeBlock->numCalleeLocals()) == WTF::roundUpToMultipleOf(stackAlignmentRegisters(), static_cast<unsigned>(codeBlock->numCalleeLocals())));

return roundLocalRegisterCountForFramePointerOffset(codeBlock->numCalleeLocals() + maxFrameExtentForSlowPathCallInRegisters);

}

} } // namespace JSC::LLInt

WebKit/Source/JavaScriptCore/llint/LLIntEntrypoint.cpp at main · WebKit/WebKit · GitHub

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