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1 // Copyright 2015 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_INTERPRETER_BYTECODES_H_ | |
6 #define V8_INTERPRETER_BYTECODES_H_ | |
7 | |
8 #include <iosfwd> | |
9 | |
10 // Clients of this interface shouldn't depend on lots of interpreter internals. | |
11 // Do not include anything from src/interpreter here! | |
12 #include "src/utils.h" | |
13 | |
14 namespace v8 { | |
15 namespace internal { | |
16 namespace interpreter { | |
17 | |
18 // The list of bytecodes which are interpreted by the interpreter. | |
19 #define BYTECODE_LIST(V) \ | |
20 V(LoadLiteral0, 1) \ | |
21 V(Return, 0) | |
22 | |
23 enum class Bytecode : uint8_t { | |
24 #define DECLARE_BYTECODE(Name, _) k##Name, | |
25 BYTECODE_LIST(DECLARE_BYTECODE) | |
26 #undef DECLARE_BYTECODE | |
27 #define COUNT_BYTECODE(x, _) +1 | |
28 // The COUNT_BYTECODE macro will turn this into kLast = -1 +1 +1... which will | |
29 // evaluate to the same value as the last real bytecode. | |
30 kLast = -1 BYTECODE_LIST(COUNT_BYTECODE) | |
31 #undef COUNT_BYTECODE | |
32 }; | |
33 | |
34 class Bytecodes { | |
35 public: | |
36 // Returns string representation of |bytecode|. | |
37 static const char* ToString(Bytecode bytecode); | |
38 | |
39 // Returns the number of arguments expected by |bytecode|. | |
40 static const int NumberOfArguments(Bytecode bytecode); | |
41 | |
42 // Returns the size of the bytecode including its arguments. | |
43 static const int Size(Bytecode bytecode); | |
44 | |
45 private: | |
46 Bytecodes() { UNREACHABLE(); } | |
Michael Starzinger
2015/07/21 13:51:45
nit: Better use DISALLOW_IMPLICIT_CONSTRUCTORS(Byt
rmcilroy
2015/07/23 10:43:54
Done.
| |
47 }; | |
48 | |
49 | |
50 std::ostream& operator<<(std::ostream& os, const Bytecode& bytecode); | |
51 | |
52 } // namespace interpreter | |
53 } // namespace internal | |
54 } // namespace v8 | |
55 | |
56 #endif // V8_INTERPRETER_BYTECODES_H_ | |
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