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Issue 2799923002: MIPS[64]: Implement fill.df, copy_u.df, copy_s.df instructions in simulator (Closed)
Patch Set: Rebase Created 3 years, 7 months ago
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1 // Copyright 2012 the V8 project authors. All rights reserved. 1 // Copyright 2012 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 // A Disassembler object is used to disassemble a block of code instruction by 5 // A Disassembler object is used to disassemble a block of code instruction by
6 // instruction. The default implementation of the NameConverter object can be 6 // instruction. The default implementation of the NameConverter object can be
7 // overriden to modify register names or to do symbol lookup on addresses. 7 // overriden to modify register names or to do symbol lookup on addresses.
8 // 8 //
9 // The example below will disassemble a block of code and print it to stdout. 9 // The example below will disassemble a block of code and print it to stdout.
10 // 10 //
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52 out_buffer_[out_buffer_pos_] = '\0'; 52 out_buffer_[out_buffer_pos_] = '\0';
53 } 53 }
54 54
55 ~Decoder() {} 55 ~Decoder() {}
56 56
57 // Writes one disassembled instruction into 'buffer' (0-terminated). 57 // Writes one disassembled instruction into 'buffer' (0-terminated).
58 // Returns the length of the disassembled machine instruction in bytes. 58 // Returns the length of the disassembled machine instruction in bytes.
59 int InstructionDecode(byte* instruction); 59 int InstructionDecode(byte* instruction);
60 60
61 private: 61 private:
62 const uint32_t kMsaI8Mask = ((3U << 24) | ((1 << 6) - 1));
63 const uint32_t kMsaI5Mask = ((7U << 23) | ((1 << 6) - 1));
64 const uint32_t kMsaMI10Mask = (15U << 2);
65 const uint32_t kMsaBITMask = ((7U << 23) | ((1 << 6) - 1));
66 const uint32_t kMsaELMMask = (15U << 22);
67 const uint32_t kMsa3RMask = ((7U << 23) | ((1 << 6) - 1));
68 const uint32_t kMsa3RFMask = ((15U << 22) | ((1 << 6) - 1));
69 const uint32_t kMsaVECMask = (23U << 21);
70 const uint32_t kMsa2RMask = (7U << 18);
71 const uint32_t kMsa2RFMask = (15U << 17);
72
73 // Bottleneck functions to print into the out_buffer. 62 // Bottleneck functions to print into the out_buffer.
74 void PrintChar(const char ch); 63 void PrintChar(const char ch);
75 void Print(const char* str); 64 void Print(const char* str);
76 65
77 // Printing of common values. 66 // Printing of common values.
78 void PrintRegister(int reg); 67 void PrintRegister(int reg);
79 void PrintFPURegister(int freg); 68 void PrintFPURegister(int freg);
80 void PrintMSARegister(int wreg); 69 void PrintMSARegister(int wreg);
81 void PrintFPUStatusRegister(int freg); 70 void PrintFPUStatusRegister(int freg);
82 void PrintMSAControlRegister(int creg); 71 void PrintMSAControlRegister(int creg);
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2728 *reinterpret_cast<int32_t*>(prev_pc), buffer.start()); 2717 *reinterpret_cast<int32_t*>(prev_pc), buffer.start());
2729 } 2718 }
2730 } 2719 }
2731 2720
2732 2721
2733 #undef UNSUPPORTED 2722 #undef UNSUPPORTED
2734 2723
2735 } // namespace disasm 2724 } // namespace disasm
2736 2725
2737 #endif // V8_TARGET_ARCH_MIPS 2726 #endif // V8_TARGET_ARCH_MIPS
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