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/*
* Copyright (C) 2020-2021 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 "JITOperationList.h"
#include "Gate.h"
#include "LLIntData.h"
#include "Opcode.h"
#if ENABLE(JIT_CAGE)
#include <WebKitAdditions/JITCageAdditions.h>
#endif
namespace JSC {
#if ENABLE(JIT_OPERATION_VALIDATION)
LazyNeverDestroyed<JITOperationList> jitOperationList;
extern const uintptr_t startOfJITOperationsInJSC __asm("section$start$__DATA_CONST$__jsc_ops");
extern const uintptr_t endOfJITOperationsInJSC __asm("section$end$__DATA_CONST$__jsc_ops");
void JITOperationList::initialize()
{
jitOperationList.construct();
}
static SUPPRESS_ASAN ALWAYS_INLINE void addPointers(HashMap<void*, void*>& map, const uintptr_t* beginOperations, const uintptr_t* endOperations)
{
#if ENABLE(JIT_CAGE)
if (Options::useJITCage()) {
JSC_JIT_CAGED_POINTER_REGISTRATION();
return;
}
#endif
if constexpr (ASSERT_ENABLED) {
for (const uintptr_t* current = beginOperations; current != endOperations; ++current) {
void* codePtr = removeCodePtrTag(bitwise_cast<void*>(*current));
if (codePtr)
map.add(codePtr, WTF::tagNativeCodePtrImpl<OperationPtrTag>(codePtr));
}
}
}
void JITOperationList::populatePointersInJavaScriptCore()
{
static std::once_flag onceKey;
std::call_once(onceKey, [] {
if (Options::useJIT())
addPointers(jitOperationList->m_validatedOperations, &startOfJITOperationsInJSC, &endOfJITOperationsInJSC);
});
}
void JITOperationList::populatePointersInJavaScriptCoreForLLInt()
{
static std::once_flag onceKey;
std::call_once(onceKey, [] {
#define LLINT_OP(name) \
bitwise_cast<uintptr_t>(LLInt::getCodeFunctionPtr<CFunctionPtrTag>(name)), \
bitwise_cast<uintptr_t>(LLInt::getWide16CodeFunctionPtr<CFunctionPtrTag>(name)), \
bitwise_cast<uintptr_t>(LLInt::getWide32CodeFunctionPtr<CFunctionPtrTag>(name)),
#define LLINT_RETURN_LOCATION(name, ...) \
LLINT_OP(name##_return_location)
const uintptr_t operations[] = {
bitwise_cast<uintptr_t>(LLInt::getCodeFunctionPtr<CFunctionPtrTag>(llint_function_for_call_prologue)),
bitwise_cast<uintptr_t>(LLInt::getCodeFunctionPtr<CFunctionPtrTag>(llint_function_for_construct_prologue)),
bitwise_cast<uintptr_t>(LLInt::getCodeFunctionPtr<CFunctionPtrTag>(llint_function_for_call_arity_check)),
bitwise_cast<uintptr_t>(LLInt::getCodeFunctionPtr<CFunctionPtrTag>(llint_function_for_construct_arity_check)),
bitwise_cast<uintptr_t>(LLInt::getCodeFunctionPtr<CFunctionPtrTag>(llint_eval_prologue)),
bitwise_cast<uintptr_t>(LLInt::getCodeFunctionPtr<CFunctionPtrTag>(llint_program_prologue)),
bitwise_cast<uintptr_t>(LLInt::getCodeFunctionPtr<CFunctionPtrTag>(llint_module_program_prologue)),
bitwise_cast<uintptr_t>(LLInt::getCodeFunctionPtr<CFunctionPtrTag>(wasm_function_prologue)),
bitwise_cast<uintptr_t>(LLInt::getCodeFunctionPtr<CFunctionPtrTag>(wasm_function_prologue_no_tls)),
bitwise_cast<uintptr_t>(LLInt::getCodeFunctionPtr<CFunctionPtrTag>(llint_throw_during_call_trampoline)),
bitwise_cast<uintptr_t>(LLInt::getCodeFunctionPtr<CFunctionPtrTag>(llint_handle_uncaught_exception)),
bitwise_cast<uintptr_t>(LLInt::getCodeFunctionPtr<CFunctionPtrTag>(checkpoint_osr_exit_trampoline)),
bitwise_cast<uintptr_t>(LLInt::getCodeFunctionPtr<CFunctionPtrTag>(checkpoint_osr_exit_from_inlined_call_trampoline)),
bitwise_cast<uintptr_t>(LLInt::getCodeFunctionPtr<CFunctionPtrTag>(normal_osr_exit_trampoline)),
bitwise_cast<uintptr_t>(LLInt::getCodeFunctionPtr<CFunctionPtrTag>(fuzzer_return_early_from_loop_hint)),
LLINT_OP(op_catch)
LLINT_OP(llint_generic_return_point)
LLINT_RETURN_LOCATION(op_get_by_id)
LLINT_RETURN_LOCATION(op_get_by_val)
LLINT_RETURN_LOCATION(op_put_by_id)
LLINT_RETURN_LOCATION(op_put_by_val)
JSC_JS_GATE_OPCODES(LLINT_RETURN_LOCATION)
JSC_WASM_GATE_OPCODES(LLINT_RETURN_LOCATION)
};
if (Options::useJIT())
addPointers(jitOperationList->m_validatedOperations, operations, operations + WTF_ARRAY_LENGTH(operations));
#undef LLINT_RETURN_LOCATION
});
}
void JITOperationList::populatePointersInEmbedder(const uintptr_t* beginOperations, const uintptr_t* endOperations)
{
UNUSED_PARAM(beginOperations);
UNUSED_PARAM(endOperations);
if (Options::useJIT())
addPointers(jitOperationList->m_validatedOperations, beginOperations, endOperations);
}
#endif // ENABLE(JIT_OPERATION_VALIDATION)
} // namespace JSC
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