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1 // Copyright 2010 the V8 project authors. All rights reserved. | 1 // Copyright 2010 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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1031 // void Decoder::DecodeTypeVFP(Instr* instr) | 1031 // void Decoder::DecodeTypeVFP(Instr* instr) |
1032 // vmov: Sn = Rt | 1032 // vmov: Sn = Rt |
1033 // vmov: Rt = Sn | 1033 // vmov: Rt = Sn |
1034 // vcvt: Dd = Sm | 1034 // vcvt: Dd = Sm |
1035 // vcvt: Sd = Dm | 1035 // vcvt: Sd = Dm |
1036 // Dd = vadd(Dn, Dm) | 1036 // Dd = vadd(Dn, Dm) |
1037 // Dd = vsub(Dn, Dm) | 1037 // Dd = vsub(Dn, Dm) |
1038 // Dd = vmul(Dn, Dm) | 1038 // Dd = vmul(Dn, Dm) |
1039 // Dd = vdiv(Dn, Dm) | 1039 // Dd = vdiv(Dn, Dm) |
1040 // vcmp(Dd, Dm) | 1040 // vcmp(Dd, Dm) |
1041 // VMRS | 1041 // vmrs |
| 1042 // Dd = vsqrt(Dm) |
1042 void Decoder::DecodeTypeVFP(Instr* instr) { | 1043 void Decoder::DecodeTypeVFP(Instr* instr) { |
1043 ASSERT((instr->TypeField() == 7) && (instr->Bit(24) == 0x0) ); | 1044 ASSERT((instr->TypeField() == 7) && (instr->Bit(24) == 0x0) ); |
1044 ASSERT(instr->Bits(11, 9) == 0x5); | 1045 ASSERT(instr->Bits(11, 9) == 0x5); |
1045 | 1046 |
1046 if (instr->Bit(4) == 0) { | 1047 if (instr->Bit(4) == 0) { |
1047 if (instr->Opc1Field() == 0x7) { | 1048 if (instr->Opc1Field() == 0x7) { |
1048 // Other data processing instructions | 1049 // Other data processing instructions |
1049 if ((instr->Opc2Field() == 0x7) && (instr->Opc3Field() == 0x3)) { | 1050 if ((instr->Opc2Field() == 0x7) && (instr->Opc3Field() == 0x3)) { |
1050 DecodeVCVTBetweenDoubleAndSingle(instr); | 1051 DecodeVCVTBetweenDoubleAndSingle(instr); |
1051 } else if ((instr->Opc2Field() == 0x8) && (instr->Opc3Field() & 0x1)) { | 1052 } else if ((instr->Opc2Field() == 0x8) && (instr->Opc3Field() & 0x1)) { |
1052 DecodeVCVTBetweenFloatingPointAndInteger(instr); | 1053 DecodeVCVTBetweenFloatingPointAndInteger(instr); |
1053 } else if (((instr->Opc2Field() >> 1) == 0x6) && | 1054 } else if (((instr->Opc2Field() >> 1) == 0x6) && |
1054 (instr->Opc3Field() & 0x1)) { | 1055 (instr->Opc3Field() & 0x1)) { |
1055 DecodeVCVTBetweenFloatingPointAndInteger(instr); | 1056 DecodeVCVTBetweenFloatingPointAndInteger(instr); |
1056 } else if (((instr->Opc2Field() == 0x4) || (instr->Opc2Field() == 0x5)) && | 1057 } else if (((instr->Opc2Field() == 0x4) || (instr->Opc2Field() == 0x5)) && |
1057 (instr->Opc3Field() & 0x1)) { | 1058 (instr->Opc3Field() & 0x1)) { |
1058 DecodeVCMP(instr); | 1059 DecodeVCMP(instr); |
| 1060 } else if (((instr->Opc2Field() == 0x1)) && (instr->Opc3Field() == 0x3)) { |
| 1061 Format(instr, "vsqrt.f64'cond 'Dd, 'Dm"); |
1059 } else { | 1062 } else { |
1060 Unknown(instr); // Not used by V8. | 1063 Unknown(instr); // Not used by V8. |
1061 } | 1064 } |
1062 } else if (instr->Opc1Field() == 0x3) { | 1065 } else if (instr->Opc1Field() == 0x3) { |
1063 if (instr->SzField() == 0x1) { | 1066 if (instr->SzField() == 0x1) { |
1064 if (instr->Opc3Field() & 0x1) { | 1067 if (instr->Opc3Field() & 0x1) { |
1065 Format(instr, "vsub.f64'cond 'Dd, 'Dn, 'Dm"); | 1068 Format(instr, "vsub.f64'cond 'Dd, 'Dn, 'Dm"); |
1066 } else { | 1069 } else { |
1067 Format(instr, "vadd.f64'cond 'Dd, 'Dn, 'Dm"); | 1070 Format(instr, "vadd.f64'cond 'Dd, 'Dn, 'Dm"); |
1068 } | 1071 } |
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1389 pc += d.InstructionDecode(buffer, pc); | 1392 pc += d.InstructionDecode(buffer, pc); |
1390 fprintf(f, "%p %08x %s\n", | 1393 fprintf(f, "%p %08x %s\n", |
1391 prev_pc, *reinterpret_cast<int32_t*>(prev_pc), buffer.start()); | 1394 prev_pc, *reinterpret_cast<int32_t*>(prev_pc), buffer.start()); |
1392 } | 1395 } |
1393 } | 1396 } |
1394 | 1397 |
1395 | 1398 |
1396 } // namespace disasm | 1399 } // namespace disasm |
1397 | 1400 |
1398 #endif // V8_TARGET_ARCH_ARM | 1401 #endif // V8_TARGET_ARCH_ARM |
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