1 //=- Mips32r6InstrFormats.td - Mips32r6 Instruction Formats -*- tablegen -*-==//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file describes Mips32r6 instruction formats.
12 //===----------------------------------------------------------------------===//
14 class MipsR6Inst : MipsInst<(outs), (ins), "", [], NoItinerary, FrmOther>,
16 let DecoderNamespace = "Mips32r6_64r6";
17 let EncodingPredicates = [HasStdEnc];
20 //===----------------------------------------------------------------------===//
24 //===----------------------------------------------------------------------===//
26 def OPGROUP_COP1 { bits<6> Value = 0b010001; }
27 def OPGROUP_AUI { bits<6> Value = 0b001111; }
28 def OPGROUP_DAUI { bits<6> Value = 0b011101; }
29 def OPGROUP_PCREL { bits<6> Value = 0b111011; }
30 def OPGROUP_REGIMM { bits<6> Value = 0b000001; }
31 def OPGROUP_SPECIAL { bits<6> Value = 0b000000; }
32 def OPGROUP_SPECIAL3 { bits<6> Value = 0b011111; }
34 class OPCODE2<bits<2> Val> {
37 def OPCODE2_ADDIUPC : OPCODE2<0b00>;
38 def OPCODE2_LWPC : OPCODE2<0b01>;
39 def OPCODE2_LWUPC : OPCODE2<0b10>;
41 class OPCODE5<bits<5> Val> {
44 def OPCODE5_ALUIPC : OPCODE5<0b11111>;
45 def OPCODE5_AUIPC : OPCODE5<0b11110>;
46 def OPCODE5_DAHI : OPCODE5<0b00110>;
47 def OPCODE5_DATI : OPCODE5<0b11110>;
49 class OPCODE6<bits<6> Val> {
52 def OPCODE6_ALIGN : OPCODE6<0b100000>;
53 def OPCODE6_DALIGN : OPCODE6<0b100100>;
54 def OPCODE6_BITSWAP : OPCODE6<0b100000>;
55 def OPCODE6_DBITSWAP : OPCODE6<0b100100>;
57 class FIELD_FMT<bits<5> Val> {
60 def FIELD_FMT_S : FIELD_FMT<0b10000>;
61 def FIELD_FMT_D : FIELD_FMT<0b10001>;
63 class FIELD_CMP_COND<bits<5> Val> {
66 def FIELD_CMP_COND_F : FIELD_CMP_COND<0b00000>;
67 def FIELD_CMP_COND_UN : FIELD_CMP_COND<0b00001>;
68 def FIELD_CMP_COND_EQ : FIELD_CMP_COND<0b00010>;
69 def FIELD_CMP_COND_UEQ : FIELD_CMP_COND<0b00011>;
70 def FIELD_CMP_COND_OLT : FIELD_CMP_COND<0b00100>;
71 def FIELD_CMP_COND_ULT : FIELD_CMP_COND<0b00101>;
72 def FIELD_CMP_COND_OLE : FIELD_CMP_COND<0b00110>;
73 def FIELD_CMP_COND_ULE : FIELD_CMP_COND<0b00111>;
74 def FIELD_CMP_COND_SF : FIELD_CMP_COND<0b01000>;
75 def FIELD_CMP_COND_NGLE : FIELD_CMP_COND<0b01001>;
76 def FIELD_CMP_COND_SEQ : FIELD_CMP_COND<0b01010>;
77 def FIELD_CMP_COND_NGL : FIELD_CMP_COND<0b01011>;
78 def FIELD_CMP_COND_LT : FIELD_CMP_COND<0b01100>;
79 def FIELD_CMP_COND_NGE : FIELD_CMP_COND<0b01101>;
80 def FIELD_CMP_COND_LE : FIELD_CMP_COND<0b01110>;
81 def FIELD_CMP_COND_NGT : FIELD_CMP_COND<0b01111>;
83 class FIELD_CMP_FORMAT<bits<5> Val> {
86 def FIELD_CMP_FORMAT_S : FIELD_CMP_FORMAT<0b10100>;
87 def FIELD_CMP_FORMAT_D : FIELD_CMP_FORMAT<0b10101>;
89 //===----------------------------------------------------------------------===//
93 //===----------------------------------------------------------------------===//
95 class AUI_FM : MipsR6Inst {
102 let Inst{31-26} = OPGROUP_AUI.Value;
103 let Inst{25-21} = rs;
104 let Inst{20-16} = rt;
105 let Inst{15-0} = imm;
108 class DAUI_FM : AUI_FM {
109 let Inst{31-26} = OPGROUP_DAUI.Value;
112 class COP1_2R_FM<bits<6> funct, FIELD_FMT Format> : MipsR6Inst {
118 let Inst{31-26} = OPGROUP_COP1.Value;
119 let Inst{25-21} = Format.Value;
120 let Inst{20-16} = 0b00000;
121 let Inst{15-11} = fs;
123 let Inst{5-0} = funct;
126 class COP1_3R_FM<bits<6> funct, FIELD_FMT Format> : MipsR6Inst {
133 let Inst{31-26} = OPGROUP_COP1.Value;
134 let Inst{25-21} = Format.Value;
135 let Inst{20-16} = ft;
136 let Inst{15-11} = fs;
138 let Inst{5-0} = funct;
141 class PCREL16_FM<OPCODE5 Operation> : MipsR6Inst {
147 let Inst{31-26} = OPGROUP_PCREL.Value;
148 let Inst{25-21} = rs;
149 let Inst{20-16} = Operation.Value;
150 let Inst{15-0} = imm;
153 class PCREL19_FM<OPCODE2 Operation> : MipsR6Inst {
159 let Inst{31-26} = OPGROUP_PCREL.Value;
160 let Inst{25-21} = rs;
161 let Inst{20-19} = Operation.Value;
162 let Inst{18-0} = imm;
165 class SPECIAL3_2R_FM<OPCODE6 Operation> : MipsR6Inst {
171 let Inst{31-26} = OPGROUP_SPECIAL3.Value;
172 let Inst{25-21} = 0b00000;
173 let Inst{20-16} = rt;
174 let Inst{15-11} = rd;
175 let Inst{10-6} = 0b00000;
176 let Inst{5-0} = Operation.Value;
179 class SPECIAL_3R_FM<bits<5> mulop, bits<6> funct> : MipsR6Inst {
186 let Inst{31-26} = OPGROUP_SPECIAL.Value;
187 let Inst{25-21} = rs;
188 let Inst{20-16} = rt;
189 let Inst{15-11} = rd;
190 let Inst{10-6} = mulop;
191 let Inst{5-0} = funct;
194 class SPECIAL3_ALIGN_FM<OPCODE6 Operation> : MipsR6Inst {
202 let Inst{31-26} = OPGROUP_SPECIAL3.Value;
203 let Inst{25-21} = rs;
204 let Inst{20-16} = rt;
205 let Inst{15-11} = rd;
206 let Inst{10-8} = 0b010;
208 let Inst{5-0} = Operation.Value;
211 class SPECIAL3_DALIGN_FM<OPCODE6 Operation> : MipsR6Inst {
219 let Inst{31-26} = OPGROUP_SPECIAL3.Value;
220 let Inst{25-21} = rs;
221 let Inst{20-16} = rt;
222 let Inst{15-11} = rd;
223 let Inst{10-9} = 0b01;
225 let Inst{5-0} = Operation.Value;
228 class REGIMM_FM<OPCODE5 Operation> : MipsR6Inst {
234 let Inst{31-26} = OPGROUP_REGIMM.Value;
235 let Inst{25-21} = rs;
236 let Inst{20-16} = Operation.Value;
237 let Inst{15-0} = imm;
240 class COP1_CMP_CONDN_FM<FIELD_CMP_FORMAT Format,
241 FIELD_CMP_COND Cond> : MipsR6Inst {
248 let Inst{31-26} = OPGROUP_COP1.Value;
249 let Inst{25-21} = Format.Value;
250 let Inst{20-16} = ft;
251 let Inst{15-11} = fs;
254 let Inst{4-0} = Cond.Value;