chromium/v8/src/codegen/code-desc.h

// Copyright 2019 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.

#ifndef V8_CODEGEN_CODE_DESC_H_
#define V8_CODEGEN_CODE_DESC_H_

#include "src/common/globals.h"

namespace v8 {
namespace internal {

// A CodeDesc describes a buffer holding instructions and relocation
// information. The instructions start at the beginning of the buffer
// and grow forward, the relocation information starts at the end of
// the buffer and grows backward. Inlined metadata sections may exist
// at the end of the instructions.
//
//  |<--------------- buffer_size ----------------------------------->|
//  |<---------------- instr_size ------------->|      |<-reloc_size->|
//  |--------------+----------------------------+------+--------------|
//  | instructions |         data               | free |  reloc info  |
//  +--------------+----------------------------+------+--------------+

// TODO(jgruber): Add a single chokepoint for specifying the instruction area
// layout (i.e. the order of inlined metadata fields).
// TODO(jgruber): Systematically maintain inlined metadata offsets and sizes
// to simplify CodeDesc initialization.

class CodeDesc { … };

}  // namespace internal
}  // namespace v8

#endif  // V8_CODEGEN_CODE_DESC_H_