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381 lines (337 loc) · 18.9 KB
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/*
* Copyright (C) 2011-2023 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 "LLIntData.h"
#include "ArithProfile.h"
#include "BaselineJITCode.h"
#include "CodeBlock.h"
#include "DFGJITCode.h"
#include "JSCConfig.h"
#include "LLIntCLoop.h"
#include "LLIntEntrypoint.h"
#include "LLIntPCRanges.h"
#include "LLIntSlowPaths.h"
#include "LLIntThunks.h"
#include "Opcode.h"
#include "WriteBarrier.h"
#define STATIC_ASSERT(cond) static_assert(cond, "LLInt assumes " #cond)
namespace JSC {
namespace LLInt {
Opcode g_opcodeMap[numOpcodeIDs + numWasmOpcodeIDs] = { };
Opcode g_opcodeMapWide16[numOpcodeIDs + numWasmOpcodeIDs] = { };
Opcode g_opcodeMapWide32[numOpcodeIDs + numWasmOpcodeIDs] = { };
#if !ENABLE(C_LOOP)
extern "C" void SYSV_ABI llint_entry(void*, void*, void*);
#if ENABLE(WEBASSEMBLY)
extern "C" void wasm_entry(void*, void*, void*);
#endif // ENABLE(WEBASSEMBLY)
#endif // !ENABLE(C_LOOP)
#if CPU(ARM64E)
extern "C" void vmEntryToJavaScriptTrampoline(void);
extern "C" void tailCallJSEntryTrampoline(void);
extern "C" void tailCallJSEntrySlowPathTrampoline(void);
extern "C" void tailCallWithoutUntagJSEntryTrampoline(void);
extern "C" void wasmTailCallJSEntrySlowPathTrampoline(void);
extern "C" void exceptionHandlerTrampoline(void);
extern "C" void returnFromLLIntTrampoline(void);
#endif
#if ENABLE(CSS_SELECTOR_JIT) && CPU(ARM64E) && !ENABLE(C_LOOP)
extern "C" void vmEntryToCSSJITAfter(void);
JSC_ANNOTATE_JIT_OPERATION_RETURN(vmEntryToCSSJITAfter);
#endif
#if !ENABLE(C_LOOP)
static void neuterOpcodeMaps()
{
#if CPU(ARM64E)
#define SET_CRASH_TARGET(entry) do { \
void* crashTarget = bitwise_cast<void*>(llint_check_vm_entry_permission); \
uint64_t address = bitwise_cast<uint64_t>(&entry); \
uint64_t newTag = (bitwise_cast<uint64_t>(BytecodePtrTag) << 48) | address; \
void* signedTarget = ptrauth_auth_and_resign(crashTarget, ptrauth_key_function_pointer, 0, ptrauth_key_process_dependent_code, newTag); \
entry = bitwise_cast<Opcode>(signedTarget); \
} while (false)
#else
#define SET_CRASH_TARGET(entry) do { \
entry = bitwise_cast<Opcode>(llint_check_vm_entry_permission); \
} while (false)
#endif
for (unsigned i = 0; i < numOpcodeIDs + numWasmOpcodeIDs; ++i) {
SET_CRASH_TARGET(g_opcodeMap[i]);
SET_CRASH_TARGET(g_opcodeMapWide16[i]);
SET_CRASH_TARGET(g_opcodeMapWide32[i]);
}
#undef SET_CRASH_TARGET
}
#endif
void initialize()
{
#if ENABLE(C_LOOP)
CLoop::initialize();
#else // !ENABLE(C_LOOP)
if (UNLIKELY(g_jscConfig.vmEntryDisallowed))
neuterOpcodeMaps();
else {
llint_entry(&g_opcodeMap, &g_opcodeMapWide16, &g_opcodeMapWide32);
#if ENABLE(WEBASSEMBLY)
wasm_entry(&g_opcodeMap[numOpcodeIDs], &g_opcodeMapWide16[numOpcodeIDs], &g_opcodeMapWide32[numOpcodeIDs]);
#endif // ENABLE(WEBASSEMBLY)
}
static_assert(llint_throw_from_slow_path_trampoline < UINT8_MAX);
static_assert(wasm_throw_from_slow_path_trampoline < UINT8_MAX);
for (unsigned i = 0; i < maxBytecodeStructLength + 1; ++i) {
g_jscConfig.llint.exceptionInstructions[i] = llint_throw_from_slow_path_trampoline;
g_jscConfig.llint.wasmExceptionInstructions[i] = wasm_throw_from_slow_path_trampoline;
}
JITOperationList::populatePointersInJavaScriptCoreForLLInt();
#if CPU(ARM64E)
#if ENABLE(JIT_CAGE)
if (Options::useJITCage())
g_jscConfig.llint.gateMap[static_cast<unsigned>(Gate::jitCagePtr)] = jitCagePtrThunk().code().taggedPtr();
#endif
#define INITIALIZE_JS_GATE(name, tag) \
do { \
static LazyNeverDestroyed<MacroAssemblerCodeRef<NativeToJITGatePtrTag>> codeRef8; \
static LazyNeverDestroyed<MacroAssemblerCodeRef<NativeToJITGatePtrTag>> codeRef16; \
static LazyNeverDestroyed<MacroAssemblerCodeRef<NativeToJITGatePtrTag>> codeRef32; \
if (Options::useJIT()) { \
codeRef8.construct(createJSGateThunk(retagCodePtr<void*, CFunctionPtrTag, OperationPtrTag>(LLInt::getCodeFunctionPtr<CFunctionPtrTag>(name##_return_location)), tag, #name)); \
codeRef16.construct(createJSGateThunk(retagCodePtr<void*, CFunctionPtrTag, OperationPtrTag>(LLInt::getWide16CodeFunctionPtr<CFunctionPtrTag>(name##_return_location)), tag, #name "_wide16")); \
codeRef32.construct(createJSGateThunk(retagCodePtr<void*, CFunctionPtrTag, OperationPtrTag>(LLInt::getWide32CodeFunctionPtr<CFunctionPtrTag>(name##_return_location)), tag, #name "_wide32")); \
} else { \
codeRef8.construct(LLInt::getCodeRef<NativeToJITGatePtrTag>(js_trampoline_##name)); \
codeRef16.construct(LLInt::getWide16CodeRef<NativeToJITGatePtrTag>(js_trampoline_##name)); \
codeRef32.construct(LLInt::getWide32CodeRef<NativeToJITGatePtrTag>(js_trampoline_##name)); \
} \
g_jscConfig.llint.gateMap[static_cast<unsigned>(Gate::name)] = codeRef8.get().code().taggedPtr(); \
g_jscConfig.llint.gateMap[static_cast<unsigned>(Gate::name##_wide16)] = codeRef16.get().code().taggedPtr(); \
g_jscConfig.llint.gateMap[static_cast<unsigned>(Gate::name##_wide32)] = codeRef32.get().code().taggedPtr(); \
} while (0);
JSC_JS_GATE_OPCODES(INITIALIZE_JS_GATE)
#if ENABLE(WEBASSEMBLY)
#define INITIALIZE_WASM_GATE(name, tag) \
do { \
static LazyNeverDestroyed<MacroAssemblerCodeRef<NativeToJITGatePtrTag>> codeRef8; \
static LazyNeverDestroyed<MacroAssemblerCodeRef<NativeToJITGatePtrTag>> codeRef16; \
static LazyNeverDestroyed<MacroAssemblerCodeRef<NativeToJITGatePtrTag>> codeRef32; \
if (Options::useJIT()) { \
codeRef8.construct(createWasmGateThunk(retagCodePtr<void*, CFunctionPtrTag, OperationPtrTag>(LLInt::getCodeFunctionPtr<CFunctionPtrTag>(name##_return_location)), tag, #name)); \
codeRef16.construct(createWasmGateThunk(retagCodePtr<void*, CFunctionPtrTag, OperationPtrTag>(LLInt::getWide16CodeFunctionPtr<CFunctionPtrTag>(name##_return_location)), tag, #name "_wide16")); \
codeRef32.construct(createWasmGateThunk(retagCodePtr<void*, CFunctionPtrTag, OperationPtrTag>(LLInt::getWide32CodeFunctionPtr<CFunctionPtrTag>(name##_return_location)), tag, #name "_wide32")); \
} else { \
codeRef8.construct(LLInt::getCodeRef<NativeToJITGatePtrTag>(wasm_trampoline_##name)); \
codeRef16.construct(LLInt::getWide16CodeRef<NativeToJITGatePtrTag>(wasm_trampoline_##name)); \
codeRef32.construct(LLInt::getWide32CodeRef<NativeToJITGatePtrTag>(wasm_trampoline_##name)); \
} \
g_jscConfig.llint.gateMap[static_cast<unsigned>(Gate::name)] = codeRef8.get().code().taggedPtr(); \
g_jscConfig.llint.gateMap[static_cast<unsigned>(Gate::name##_wide16)] = codeRef16.get().code().taggedPtr(); \
g_jscConfig.llint.gateMap[static_cast<unsigned>(Gate::name##_wide32)] = codeRef32.get().code().taggedPtr(); \
} while (0);
JSC_WASM_GATE_OPCODES(INITIALIZE_WASM_GATE)
#endif // ENABLE(WEBASSEMBLY)
{
static LazyNeverDestroyed<MacroAssemblerCodeRef<NativeToJITGatePtrTag>> codeRef;
if (Options::useJIT())
codeRef.construct(createJSGateThunk(retagCodePtr<void*, CFunctionPtrTag, OperationPtrTag>(&vmEntryToJavaScriptGateAfter), JSEntryPtrTag, "vmEntryToJavaScript"));
else
codeRef.construct(MacroAssemblerCodeRef<NativeToJITGatePtrTag>::createSelfManagedCodeRef(CodePtr<NativeToJITGatePtrTag>::fromTaggedPtr(retagCodePtr<void*, CFunctionPtrTag, NativeToJITGatePtrTag>(&vmEntryToJavaScriptTrampoline))));
g_jscConfig.llint.gateMap[static_cast<unsigned>(Gate::vmEntryToJavaScript)] = codeRef.get().code().taggedPtr();
}
{
static LazyNeverDestroyed<MacroAssemblerCodeRef<NativeToJITGatePtrTag>> codeRef;
if (Options::useJIT())
codeRef.construct(createTailCallGate(JSEntryPtrTag, true));
else
codeRef.construct(MacroAssemblerCodeRef<NativeToJITGatePtrTag>::createSelfManagedCodeRef(CodePtr<NativeToJITGatePtrTag>::fromTaggedPtr(retagCodePtr<void*, CFunctionPtrTag, NativeToJITGatePtrTag>(&tailCallJSEntryTrampoline))));
g_jscConfig.llint.gateMap[static_cast<unsigned>(Gate::tailCallJSEntryPtrTag)]= codeRef.get().code().taggedPtr();
}
{
static LazyNeverDestroyed<MacroAssemblerCodeRef<NativeToJITGatePtrTag>> codeRef;
if (Options::useJIT())
codeRef.construct(createTailCallGate(JSEntryPtrTag, true));
else
codeRef.construct(MacroAssemblerCodeRef<NativeToJITGatePtrTag>::createSelfManagedCodeRef(CodePtr<NativeToJITGatePtrTag>::fromTaggedPtr(retagCodePtr<void*, CFunctionPtrTag, NativeToJITGatePtrTag>(&tailCallJSEntrySlowPathTrampoline))));
g_jscConfig.llint.gateMap[static_cast<unsigned>(Gate::tailCallJSEntrySlowPathPtrTag)] = codeRef.get().code().taggedPtr();
}
{
static LazyNeverDestroyed<MacroAssemblerCodeRef<NativeToJITGatePtrTag>> codeRef;
if (Options::useJIT())
codeRef.construct(createTailCallGate(JSEntryPtrTag, false));
else
codeRef.construct(MacroAssemblerCodeRef<NativeToJITGatePtrTag>::createSelfManagedCodeRef(CodePtr<NativeToJITGatePtrTag>::fromTaggedPtr(retagCodePtr<void*, CFunctionPtrTag, NativeToJITGatePtrTag>(&tailCallWithoutUntagJSEntryTrampoline))));
g_jscConfig.llint.gateMap[static_cast<unsigned>(Gate::tailCallWithoutUntagJSEntryPtrTag)]= codeRef.get().code().taggedPtr();
}
{
static LazyNeverDestroyed<MacroAssemblerCodeRef<NativeToJITGatePtrTag>> codeRef;
if (Options::useJIT())
codeRef.construct(createWasmTailCallGate(JSEntrySlowPathPtrTag));
else
codeRef.construct(MacroAssemblerCodeRef<NativeToJITGatePtrTag>::createSelfManagedCodeRef(CodePtr<NativeToJITGatePtrTag>::fromTaggedPtr(retagCodePtr<void*, CFunctionPtrTag, NativeToJITGatePtrTag>(&wasmTailCallJSEntrySlowPathTrampoline))));
g_jscConfig.llint.gateMap[static_cast<unsigned>(Gate::wasmTailCallJSEntrySlowPathPtrTag)]= codeRef.get().code().taggedPtr();
}
{
static LazyNeverDestroyed<MacroAssemblerCodeRef<NativeToJITGatePtrTag>> codeRef;
if (Options::useJIT())
codeRef.construct(exceptionHandlerGateThunk());
else
codeRef.construct(MacroAssemblerCodeRef<NativeToJITGatePtrTag>::createSelfManagedCodeRef(CodePtr<NativeToJITGatePtrTag>::fromTaggedPtr(retagCodePtr<void*, CFunctionPtrTag, NativeToJITGatePtrTag>(&exceptionHandlerTrampoline))));
g_jscConfig.llint.gateMap[static_cast<unsigned>(Gate::exceptionHandler)] = codeRef.get().code().taggedPtr();
}
{
static LazyNeverDestroyed<MacroAssemblerCodeRef<NativeToJITGatePtrTag>> codeRef;
if (Options::useJIT())
codeRef.construct(returnFromLLIntGateThunk());
else
codeRef.construct(MacroAssemblerCodeRef<NativeToJITGatePtrTag>::createSelfManagedCodeRef(CodePtr<NativeToJITGatePtrTag>::fromTaggedPtr(retagCodePtr<void*, CFunctionPtrTag, NativeToJITGatePtrTag>(&returnFromLLIntTrampoline))));
g_jscConfig.llint.gateMap[static_cast<unsigned>(Gate::returnFromLLInt)] = codeRef.get().code().taggedPtr();
}
if (Options::useJIT()) {
g_jscConfig.llint.gateMap[static_cast<unsigned>(Gate::loopOSREntry)] = loopOSREntryGateThunk().code().taggedPtr();
g_jscConfig.llint.gateMap[static_cast<unsigned>(Gate::entryOSREntry)] = entryOSREntryGateThunk().code().taggedPtr();
g_jscConfig.llint.gateMap[static_cast<unsigned>(Gate::wasmOSREntry)] = wasmOSREntryGateThunk().code().taggedPtr();
} else {
g_jscConfig.llint.gateMap[static_cast<unsigned>(Gate::loopOSREntry)] = LLInt::getCodeRef<NativeToJITGatePtrTag>(loop_osr_entry_gate).code().taggedPtr();
g_jscConfig.llint.gateMap[static_cast<unsigned>(Gate::entryOSREntry)] = nullptr;
g_jscConfig.llint.gateMap[static_cast<unsigned>(Gate::wasmOSREntry)] = nullptr;
}
#define INITIALIZE_TAG_AND_UNTAG_THUNKS(name) \
do { \
static LazyNeverDestroyed<MacroAssemblerCodeRef<NativeToJITGatePtrTag>> tagCodeRef; \
static LazyNeverDestroyed<MacroAssemblerCodeRef<NativeToJITGatePtrTag>> untagCodeRef; \
if (Options::useJIT()) { \
tagCodeRef.construct(tagGateThunk(retagCodePtr<void*, CFunctionPtrTag, OperationPtrTag>(name##TagGateAfter))); \
untagCodeRef.construct(untagGateThunk(retagCodePtr<void*, CFunctionPtrTag, OperationPtrTag>(name##UntagGateAfter))); \
} else { \
tagCodeRef.construct(LLInt::getCodeRef<NativeToJITGatePtrTag>(js_trampoline_##name##_tag)); \
untagCodeRef.construct(LLInt::getCodeRef<NativeToJITGatePtrTag>(js_trampoline_##name##_untag)); \
} \
g_jscConfig.llint.gateMap[static_cast<unsigned>(Gate::name##Tag)] = tagCodeRef.get().code().taggedPtr(); \
g_jscConfig.llint.gateMap[static_cast<unsigned>(Gate::name##Untag)] = untagCodeRef.get().code().taggedPtr(); \
} while (0);
INITIALIZE_TAG_AND_UNTAG_THUNKS(llint_function_for_call_arity_check);
INITIALIZE_TAG_AND_UNTAG_THUNKS(llint_function_for_construct_arity_check);
#endif // CPU(ARM64E)
#endif // ENABLE(C_LOOP)
g_jscConfig.defaultCallThunk = defaultCall().code().taggedPtr();
}
IGNORE_WARNINGS_BEGIN("missing-noreturn")
void Data::performAssertions(VM& vm)
{
UNUSED_PARAM(vm);
// Assertions to match LowLevelInterpreter.asm. If you change any of this code, be
// prepared to change LowLevelInterpreter.asm as well!!
#if USE(JSVALUE64)
const ptrdiff_t CallFrameHeaderSlots = 5;
#else // USE(JSVALUE64) // i.e. 32-bit version
const ptrdiff_t CallFrameHeaderSlots = 4;
#endif
const ptrdiff_t MachineRegisterSize = sizeof(CPURegister);
const ptrdiff_t SlotSize = 8;
STATIC_ASSERT(sizeof(Register) == SlotSize);
STATIC_ASSERT(CallFrame::headerSizeInRegisters == CallFrameHeaderSlots);
ASSERT(!CallFrame::callerFrameOffset());
STATIC_ASSERT(CallerFrameAndPC::sizeInRegisters == (MachineRegisterSize * 2) / SlotSize);
ASSERT(CallFrame::returnPCOffset() == CallFrame::callerFrameOffset() + MachineRegisterSize);
ASSERT(static_cast<std::underlying_type_t<CallFrameSlot>>(CallFrameSlot::codeBlock) * sizeof(Register) == CallFrame::returnPCOffset() + MachineRegisterSize);
STATIC_ASSERT(CallFrameSlot::callee * sizeof(Register) == CallFrameSlot::codeBlock * sizeof(Register) + SlotSize);
STATIC_ASSERT(CallFrameSlot::argumentCountIncludingThis * sizeof(Register) == CallFrameSlot::callee * sizeof(Register) + SlotSize);
STATIC_ASSERT(CallFrameSlot::thisArgument * sizeof(Register) == CallFrameSlot::argumentCountIncludingThis * sizeof(Register) + SlotSize);
STATIC_ASSERT(CallFrame::headerSizeInRegisters == CallFrameSlot::thisArgument);
ASSERT(CallFrame::argumentOffsetIncludingThis(0) == CallFrameSlot::thisArgument);
#if CPU(BIG_ENDIAN)
STATIC_ASSERT(TagOffset == 0);
STATIC_ASSERT(PayloadOffset == 4);
#else
STATIC_ASSERT(TagOffset == 4);
STATIC_ASSERT(PayloadOffset == 0);
#endif
#if ENABLE(C_LOOP)
ASSERT(CodeBlock::llintBaselineCalleeSaveSpaceAsVirtualRegisters() == 1);
#elif USE(JSVALUE32_64)
ASSERT(CodeBlock::llintBaselineCalleeSaveSpaceAsVirtualRegisters() == 1);
#elif (CPU(X86_64) && !OS(WINDOWS)) || CPU(ARM64)
ASSERT(CodeBlock::llintBaselineCalleeSaveSpaceAsVirtualRegisters() == 4);
#elif (CPU(X86_64) && OS(WINDOWS))
ASSERT(CodeBlock::llintBaselineCalleeSaveSpaceAsVirtualRegisters() == 4);
#endif
ASSERT(!(reinterpret_cast<ptrdiff_t>((reinterpret_cast<WriteBarrier<JSCell>*>(0x4000)->slot())) - 0x4000));
// FIXME: make these assertions less horrible.
#if ASSERT_ENABLED
Vector<int> testVector;
testVector.resize(42);
ASSERT(bitwise_cast<uint32_t*>(&testVector)[sizeof(void*)/sizeof(uint32_t) + 1] == 42);
ASSERT(bitwise_cast<int**>(&testVector)[0] == testVector.begin());
#endif
{
UnaryArithProfile arithProfile;
arithProfile.argSawInt32();
ASSERT(arithProfile.bits() == UnaryArithProfile::observedIntBits());
ASSERT(arithProfile.argObservedType().isOnlyInt32());
}
{
UnaryArithProfile arithProfile;
arithProfile.argSawNumber();
ASSERT(arithProfile.bits() == UnaryArithProfile::observedNumberBits());
ASSERT(arithProfile.argObservedType().isOnlyNumber());
}
{
BinaryArithProfile arithProfile;
arithProfile.lhsSawInt32();
arithProfile.rhsSawInt32();
ASSERT(arithProfile.bits() == BinaryArithProfile::observedIntIntBits());
ASSERT(arithProfile.lhsObservedType().isOnlyInt32());
ASSERT(arithProfile.rhsObservedType().isOnlyInt32());
}
{
BinaryArithProfile arithProfile;
arithProfile.lhsSawNumber();
arithProfile.rhsSawInt32();
ASSERT(arithProfile.bits() == BinaryArithProfile::observedNumberIntBits());
ASSERT(arithProfile.lhsObservedType().isOnlyNumber());
ASSERT(arithProfile.rhsObservedType().isOnlyInt32());
}
{
BinaryArithProfile arithProfile;
arithProfile.lhsSawNumber();
arithProfile.rhsSawNumber();
ASSERT(arithProfile.bits() == BinaryArithProfile::observedNumberNumberBits());
ASSERT(arithProfile.lhsObservedType().isOnlyNumber());
ASSERT(arithProfile.rhsObservedType().isOnlyNumber());
}
{
BinaryArithProfile arithProfile;
arithProfile.lhsSawInt32();
arithProfile.rhsSawNumber();
ASSERT(arithProfile.bits() == BinaryArithProfile::observedIntNumberBits());
ASSERT(arithProfile.lhsObservedType().isOnlyInt32());
ASSERT(arithProfile.rhsObservedType().isOnlyNumber());
}
#if ENABLE(DFG_JIT)
// We share the same layout for particular fields in all JITData to make our data IC assume this.
RELEASE_ASSERT(BaselineJITData::offsetOfGlobalObject() == DFG::JITData::offsetOfGlobalObject());
RELEASE_ASSERT(BaselineJITData::offsetOfStackOffset() == DFG::JITData::offsetOfStackOffset());
#endif
}
IGNORE_WARNINGS_END
} } // namespace JSC::LLInt