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-rw-r--r--deps/v8/src/code-desc.h83
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diff --git a/deps/v8/src/code-desc.h b/deps/v8/src/code-desc.h
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--- a/deps/v8/src/code-desc.h
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-// 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_CODE_DESC_H_
-#define V8_CODE_DESC_H_
-
-#include "src/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 {
- public:
- static void Initialize(CodeDesc* desc, Assembler* assembler,
- int safepoint_table_offset, int handler_table_offset,
- int constant_pool_offset, int code_comments_offset,
- int reloc_info_offset);
-
-#ifdef DEBUG
- static void Verify(const CodeDesc* desc);
-#else
- inline static void Verify(const CodeDesc* desc) {}
-#endif
-
- public:
- byte* buffer = nullptr;
- int buffer_size = 0;
-
- // The instruction area contains executable code plus inlined metadata.
-
- int instr_size = 0;
-
- // Metadata packed into the instructions area.
-
- int safepoint_table_offset = 0;
- int safepoint_table_size = 0;
-
- int handler_table_offset = 0;
- int handler_table_size = 0;
-
- int constant_pool_offset = 0;
- int constant_pool_size = 0;
-
- int code_comments_offset = 0;
- int code_comments_size = 0;
-
- // Relocation info is located at the end of the buffer and not part of the
- // instructions area.
-
- int reloc_offset = 0;
- int reloc_size = 0;
-
- // Unwinding information.
- // TODO(jgruber,mstarzinger): Pack this into the inlined metadata section.
-
- byte* unwinding_info = nullptr;
- int unwinding_info_size = 0;
-
- Assembler* origin = nullptr;
-};
-
-} // namespace internal
-} // namespace v8
-
-#endif // V8_CODE_DESC_H_