Line data    Source code

       1             : // Copyright 2017 the V8 project authors. All rights reserved.
       2             : // Use of this source code is governed by a BSD-style license that can be
       3             : // found in the LICENSE file.
       4             : 
       5             : #ifndef V8_WASM_MEMORY_TRACING_H_
       6             : #define V8_WASM_MEMORY_TRACING_H_
       7             : 
       8             : #include <cstdint>
       9             : 
      10             : #include "src/machine-type.h"
      11             : #include "src/wasm/wasm-tier.h"
      12             : 
      13             : namespace v8 {
      14             : namespace internal {
      15             : namespace wasm {
      16             : 
      17             : // This struct is create in generated code, hence use low-level types.
      18             : struct MemoryTracingInfo {
      19             :   uint32_t address;
      20             :   uint8_t is_store;  // 0 or 1
      21             :   uint8_t mem_rep;
      22             :   static_assert(
      23             :       std::is_same<decltype(mem_rep),
      24             :                    std::underlying_type<MachineRepresentation>::type>::value,
      25             :       "MachineRepresentation uses uint8_t");
      26             : 
      27             :   MemoryTracingInfo(uint32_t addr, bool is_store, MachineRepresentation rep)
      28          36 :       : address(addr), is_store(is_store), mem_rep(static_cast<uint8_t>(rep)) {}
      29             : };
      30             : 
      31             : // Callback for tracing a memory operation for debugging.
      32             : // Triggered by --wasm-trace-memory.
      33             : void TraceMemoryOperation(ExecutionTier, const MemoryTracingInfo* info,
      34             :                           int func_index, int position, uint8_t* mem_start);
      35             : 
      36             : }  // namespace wasm
      37             : }  // namespace internal
      38             : }  // namespace v8
      39             : 
      40             : #endif  // V8_WASM_MEMORY_TRACING_H_