SparcInstrFormats.td revision c42077d37194a1872dc402522d4d7a0e81f83047
1//===- SparcV8InstrFormats.td - SparcV8 Instr Formats ------*- tablegen -*-===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file was developed by the LLVM research group and is distributed under 6// the University of Illinois Open Source License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9 10//===----------------------------------------------------------------------===// 11// Format #2 instruction classes in the SparcV8 12//===----------------------------------------------------------------------===// 13 14class F2 : InstV8 { // Format 2 instructions 15 bits<3> op2; 16 bits<22> imm22; 17 let op = 0; // op = 0 18 let Inst{24-22} = op2; 19 let Inst{21-0} = imm22; 20} 21 22// Specific F2 classes: SparcV8 manual, page 44 23// 24class F2_1<bits<3> op2Val, string name> : F2 { 25 bits<5> rd; 26 bits<22> imm; 27 28 let op2 = op2Val; 29 let Name = name; 30 31 let Inst{29-25} = rd; 32} 33 34class F2_2<bits<4> condVal, bits<3> op2Val, string name> : F2 { 35 bits<4> cond; 36 bit annul = 0; // currently unused 37 38 let cond = condVal; 39 let op2 = op2Val; 40 let Name = name; 41 42 let Inst{29} = annul; 43 let Inst{28-25} = cond; 44} 45 46//===----------------------------------------------------------------------===// 47// Format #3 instruction classes in the SparcV8 48//===----------------------------------------------------------------------===// 49 50class F3 : InstV8 { 51 bits<5> rd; 52 bits<6> op3; 53 bits<5> rs1; 54 let op{1} = 1; // Op = 2 or 3 55 let Inst{29-25} = rd; 56 let Inst{24-19} = op3; 57 let Inst{18-14} = rs1; 58} 59 60// Specific F3 classes: SparcV8 manual, page 44 61// 62class F3_1<bits<2> opVal, bits<6> op3val, string name> : F3 { 63 bits<8> asi; 64 bits<5> rs2; 65 66 let op = opVal; 67 let op3 = op3val; 68 let Name = name; 69 70 let Inst{13} = 0; // i field = 0 71 let Inst{12-5} = asi; // address space identifier 72 let Inst{4-0} = rs2; 73} 74 75class F3_2<bits<2> opVal, bits<6> op3val, string name> : F3 { 76 bits<13> simm13; 77 78 let op = opVal; 79 let op3 = op3val; 80 let Name = name; 81 82 let Inst{13} = 1; // i field = 1 83 let Inst{12-0} = simm13; 84} 85 86// floating-point 87class F3_3<bits<2> opVal, bits<6> op3val, bits<9> opfval, string name> : F3 { 88 bits<8> asi; 89 bits<5> rs2; 90 91 let op = opVal; 92 let op3 = op3val; 93 let Name = name; 94 95 let Inst{13-5} = opfval; // fp opcode 96 let Inst{4-0} = rs2; 97} 98