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1 // Copyright 2015 the V8 project authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef V8_WASM_AST_DECODER_H_ | 5 #ifndef V8_WASM_AST_DECODER_H_ |
6 #define V8_WASM_AST_DECODER_H_ | 6 #define V8_WASM_AST_DECODER_H_ |
7 | 7 |
8 #include "src/signature.h" | 8 #include "src/signature.h" |
9 #include "src/wasm/decoder.h" | 9 #include "src/wasm/decoder.h" |
10 #include "src/wasm/wasm-opcodes.h" | 10 #include "src/wasm/wasm-opcodes.h" |
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39 inline ImmI8Operand(Decoder* decoder, const byte* pc) { | 39 inline ImmI8Operand(Decoder* decoder, const byte* pc) { |
40 value = bit_cast<int8_t>(decoder->checked_read_u8(pc, 1, "immi8")); | 40 value = bit_cast<int8_t>(decoder->checked_read_u8(pc, 1, "immi8")); |
41 length = 1; | 41 length = 1; |
42 } | 42 } |
43 }; | 43 }; |
44 | 44 |
45 struct ImmI32Operand { | 45 struct ImmI32Operand { |
46 int32_t value; | 46 int32_t value; |
47 int length; | 47 int length; |
48 inline ImmI32Operand(Decoder* decoder, const byte* pc) { | 48 inline ImmI32Operand(Decoder* decoder, const byte* pc) { |
49 value = | 49 value = bit_cast<int32_t>(decoder->checked_read_u32(pc, 1, "immi32")); |
50 bit_cast<int32_t>(decoder->checked_read_i32v(pc, 1, &length, "immi32")); | 50 length = 4; |
51 } | 51 } |
52 }; | 52 }; |
53 | 53 |
54 struct ImmI64Operand { | 54 struct ImmI64Operand { |
55 int64_t value; | 55 int64_t value; |
56 int length; | 56 int length; |
57 inline ImmI64Operand(Decoder* decoder, const byte* pc) { | 57 inline ImmI64Operand(Decoder* decoder, const byte* pc) { |
58 value = | 58 value = bit_cast<int64_t>(decoder->checked_read_u64(pc, 1, "immi64")); |
59 bit_cast<int64_t>(decoder->checked_read_i64v(pc, 1, &length, "immi64")); | 59 length = 8; |
60 } | 60 } |
61 }; | 61 }; |
62 | 62 |
63 struct ImmF32Operand { | 63 struct ImmF32Operand { |
64 float value; | 64 float value; |
65 int length; | 65 int length; |
66 inline ImmF32Operand(Decoder* decoder, const byte* pc) { | 66 inline ImmF32Operand(Decoder* decoder, const byte* pc) { |
67 value = bit_cast<float>(decoder->checked_read_u32(pc, 1, "immf32")); | 67 value = bit_cast<float>(decoder->checked_read_u32(pc, 1, "immf32")); |
68 length = 4; | 68 length = 4; |
69 } | 69 } |
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274 // Computes the length of the opcode at the given address. | 274 // Computes the length of the opcode at the given address. |
275 int OpcodeLength(const byte* pc, const byte* end); | 275 int OpcodeLength(const byte* pc, const byte* end); |
276 | 276 |
277 // Computes the arity (number of sub-nodes) of the opcode at the given address. | 277 // Computes the arity (number of sub-nodes) of the opcode at the given address. |
278 int OpcodeArity(FunctionEnv* env, const byte* pc, const byte* end); | 278 int OpcodeArity(FunctionEnv* env, const byte* pc, const byte* end); |
279 } // namespace wasm | 279 } // namespace wasm |
280 } // namespace internal | 280 } // namespace internal |
281 } // namespace v8 | 281 } // namespace v8 |
282 | 282 |
283 #endif // V8_WASM_AST_DECODER_H_ | 283 #endif // V8_WASM_AST_DECODER_H_ |
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