blob: 16be7da1ff9a0899d345ea4f42d8027f0ff26446 [file] [log] [blame]
// Copyright 2020 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "src/builtins/builtins.h"
#include "src/deoptimizer/deoptimizer.h"
#include "src/snapshot/embedded/embedded-data.h"
extern "C" {
void Builtins_InterpreterEnterAtBytecode();
void Builtins_InterpreterEnterAtNextBytecode();
void Builtins_ContinueToCodeStubBuiltinWithResult();
void Builtins_ContinueToCodeStubBuiltin();
void Builtins_ContinueToJavaScriptBuiltinWithResult();
void Builtins_ContinueToJavaScriptBuiltin();
void construct_stub_create_deopt_addr();
void construct_stub_invoke_deopt_addr();
void Builtins_BaselineOrInterpreterEnterAtBytecode();
void Builtins_BaselineOrInterpreterEnterAtNextBytecode();
void Builtins_RestartFrameTrampoline();
typedef void (*function_ptr)();
}
namespace v8 {
namespace internal {
extern "C" const uint8_t v8_Default_embedded_blob_code_[];
extern "C" uint32_t v8_Default_embedded_blob_code_size_;
// List of allowed builtin addresses that we can return to in the deoptimizer.
constexpr function_ptr builtins[] = {
&Builtins_InterpreterEnterAtBytecode,
&Builtins_InterpreterEnterAtNextBytecode,
&Builtins_ContinueToCodeStubBuiltinWithResult,
&Builtins_ContinueToCodeStubBuiltin,
&Builtins_ContinueToJavaScriptBuiltinWithResult,
&Builtins_ContinueToJavaScriptBuiltin,
&construct_stub_create_deopt_addr,
&construct_stub_invoke_deopt_addr,
&Builtins_BaselineOrInterpreterEnterAtBytecode,
&Builtins_BaselineOrInterpreterEnterAtNextBytecode,
&Builtins_RestartFrameTrampoline,
};
bool Deoptimizer::IsValidReturnAddress(Address address, Isolate* isolate) {
EmbeddedData d = EmbeddedData::FromBlobForPc(isolate, address);
Address code_start = reinterpret_cast<Address>(d.code());
Address offset = address - code_start;
if (offset >= v8_Default_embedded_blob_code_size_) return false;
Address blob_start =
reinterpret_cast<Address>(v8_Default_embedded_blob_code_);
Address original_address = blob_start + offset;
for (function_ptr builtin : builtins) {
if (original_address == FUNCTION_ADDR(builtin)) {
return true;
}
}
return false;
}
} // namespace internal
} // namespace v8