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// Copyright 2017 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.
#if !V8_ENABLE_WEBASSEMBLY
#error This header should only be included if WebAssembly is enabled.
#endif // !V8_ENABLE_WEBASSEMBLY
#ifndef V8_WASM_MEMORY_TRACING_H_
#define V8_WASM_MEMORY_TRACING_H_
#include <cstdint>
#include "src/base/optional.h"
#include "src/codegen/machine-type.h"
#include "src/wasm/wasm-tier.h"
namespace v8 {
namespace internal {
namespace wasm {
// This struct is create in generated code, hence use low-level types.
struct MemoryTracingInfo {
uintptr_t offset;
uint8_t is_store; // 0 or 1
uint8_t mem_rep;
static_assert(
std::is_same<decltype(mem_rep),
std::underlying_type<MachineRepresentation>::type>::value,
"MachineRepresentation uses uint8_t");
MemoryTracingInfo(uintptr_t offset, bool is_store, MachineRepresentation rep)
: offset(offset),
is_store(is_store),
mem_rep(static_cast<uint8_t>(rep)) {}
};
// Callback for tracing a memory operation for debugging.
// Triggered by --wasm-trace-memory.
V8_EXPORT_PRIVATE void TraceMemoryOperation(base::Optional<ExecutionTier>,
const MemoryTracingInfo* info,
int func_index, int position,
uint8_t* mem_start);
} // namespace wasm
} // namespace internal
} // namespace v8
#endif // V8_WASM_MEMORY_TRACING_H_
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