LCOV - code coverage report
Current view: top level - src - code-reference.h (source / functions) Hit Total Coverage
Test: app.info Lines: 0 1 0.0 %
Date: 2019-01-20 Functions: 0 0 -

          Line data    Source code
       1             : // Copyright 2018 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_CODE_REFERENCE_H_
       6             : #define V8_CODE_REFERENCE_H_
       7             : 
       8             : #include "src/handles.h"
       9             : #include "src/objects/code.h"
      10             : 
      11             : namespace v8 {
      12             : namespace internal {
      13             : 
      14             : class Code;
      15             : 
      16             : namespace wasm {
      17             : class WasmCode;
      18             : }
      19             : 
      20             : class CodeReference {
      21             :  public:
      22           0 :   CodeReference() : kind_(JS), js_code_() {}
      23             :   explicit CodeReference(const wasm::WasmCode* wasm_code)
      24             :       : kind_(WASM), wasm_code_(wasm_code) {}
      25             :   explicit CodeReference(Handle<Code> js_code) : kind_(JS), js_code_(js_code) {}
      26             : 
      27             :   Address constant_pool() const;
      28             :   Address instruction_start() const;
      29             :   Address instruction_end() const;
      30             :   int instruction_size() const;
      31             :   const byte* relocation_start() const;
      32             :   const byte* relocation_end() const;
      33             :   int relocation_size() const;
      34             :   Address code_comments() const;
      35             :   bool is_null() const {
      36             :     return kind_ == JS ? js_code_.is_null() : wasm_code_ == nullptr;
      37             :   }
      38             : 
      39             :   Handle<Code> as_js_code() const {
      40             :     DCHECK_EQ(JS, kind_);
      41             :     return js_code_;
      42             :   }
      43             : 
      44             :   const wasm::WasmCode* as_wasm_code() const {
      45             :     DCHECK_EQ(WASM, kind_);
      46             :     return wasm_code_;
      47             :   }
      48             : 
      49             :  private:
      50             :   enum { JS, WASM } kind_;
      51             :   union {
      52             :     const wasm::WasmCode* wasm_code_;
      53             :     Handle<Code> js_code_;
      54             :   };
      55             : 
      56             :   DISALLOW_NEW_AND_DELETE();
      57             : };
      58             : ASSERT_TRIVIALLY_COPYABLE(CodeReference);
      59             : 
      60             : }  // namespace internal
      61             : }  // namespace v8
      62             : 
      63             : #endif  // V8_CODE_REFERENCE_H_

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