| //=- MicroMips32r6InstrFormats.td - Mips32r6 Instruction Formats -*- tablegen -*-==// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file describes microMIPS32r6 instruction formats. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| class MMR6Arch<string opstr> { |
| string Arch = "micromipsr6"; |
| string BaseOpcode = opstr; |
| } |
| |
| class POOL32A_BITSWAP_FM_MMR6<bits<6> funct> : MipsR6Inst { |
| bits<5> rd; |
| bits<5> rt; |
| |
| bits<32> Inst; |
| |
| let Inst{31-26} = 0b000000; |
| let Inst{25-21} = rt; |
| let Inst{20-16} = rd; |
| let Inst{15-12} = 0b0000; |
| let Inst{11-6} = funct; |
| let Inst{5-0} = 0b111100; |
| } |
| |
| class CACHE_PREF_FM_MMR6<bits<6> opgroup, bits<4> funct> : MipsR6Inst { |
| bits<21> addr; |
| bits<5> hint; |
| |
| bits<32> Inst; |
| |
| let Inst{31-26} = opgroup; |
| let Inst{25-21} = hint; |
| let Inst{20-16} = addr{20-16}; |
| let Inst{15-12} = funct; |
| let Inst{11-0} = addr{11-0}; |
| } |
| |
| class ARITH_FM_MMR6<string instr_asm, bits<10> funct> : MMR6Arch<instr_asm> { |
| bits<5> rd; |
| bits<5> rt; |
| bits<5> rs; |
| |
| bits<32> Inst; |
| |
| let Inst{31-26} = 0; |
| let Inst{25-21} = rt; |
| let Inst{20-16} = rs; |
| let Inst{15-11} = rd; |
| let Inst{10} = 0; |
| let Inst{9-0} = funct; |
| } |
| |
| class ADDI_FM_MMR6<string instr_asm, bits<6> op> : MMR6Arch<instr_asm> { |
| bits<5> rt; |
| bits<5> rs; |
| bits<16> imm16; |
| |
| bits<32> Inst; |
| |
| let Inst{31-26} = op; |
| let Inst{25-21} = rt; |
| let Inst{20-16} = rs; |
| let Inst{15-0} = imm16; |
| } |
| |
| class SIGN_EXTEND_FM_MMR6<string instr_asm, bits<10> funct> |
| : MMR6Arch<instr_asm> { |
| bits<5> rd; |
| bits<5> rt; |
| |
| bits<32> Inst; |
| |
| let Inst{31-26} = 0b000000; |
| let Inst{25-21} = rd; |
| let Inst{20-16} = rt; |
| let Inst{15-6} = funct; |
| let Inst{5-0} = 0b111100; |
| } |
| |
| class PCREL19_FM_MMR6<bits<2> funct> : MipsR6Inst { |
| bits<5> rt; |
| bits<19> imm; |
| |
| bits<32> Inst; |
| |
| let Inst{31-26} = 0b011110; |
| let Inst{25-21} = rt; |
| let Inst{20-19} = funct; |
| let Inst{18-0} = imm; |
| } |
| |
| class PCREL16_FM_MMR6<bits<5> funct> : MipsR6Inst { |
| bits<5> rt; |
| bits<16> imm; |
| |
| bits<32> Inst; |
| |
| let Inst{31-26} = 0b011110; |
| let Inst{25-21} = rt; |
| let Inst{20-16} = funct; |
| let Inst{15-0} = imm; |
| } |
| |
| class POOL32A_FM_MMR6<bits<10> funct> : MipsR6Inst { |
| bits<5> rd; |
| bits<5> rs; |
| bits<5> rt; |
| |
| bits<32> Inst; |
| |
| let Inst{31-26} = 0b000000; |
| let Inst{25-21} = rt; |
| let Inst{20-16} = rs; |
| let Inst{15-11} = rd; |
| let Inst{10} = 0; |
| let Inst{9-0} = funct; |
| } |
| |
| class POOL32A_2R_FM_MMR6<bits<10> funct> : MipsR6Inst { |
| bits<5> rs; |
| bits<5> rt; |
| |
| bits<32> Inst; |
| |
| let Inst{31-26} = 0b000000; |
| let Inst{25-21} = rt; |
| let Inst{20-16} = rs; |
| let Inst{15-6} = funct; |
| let Inst{5-0} = 0b111100; |
| } |
| |
| class SPECIAL_2R_FM_MMR6<bits<6> funct> : MipsR6Inst { |
| bits<5> rs; |
| bits<5> rt; |
| |
| bits<32> Inst; |
| |
| let Inst{31-26} = 0b000000; |
| let Inst{25-21} = rs; |
| let Inst{20-16} = 0b00000; |
| let Inst{15-11} = rt; |
| let Inst{10-6} = 0b00001; |
| let Inst{5-0} = funct; |
| } |
| |
| class POOL32A_ALIGN_FM_MMR6<bits<6> funct> : MipsR6Inst { |
| bits<5> rd; |
| bits<5> rs; |
| bits<5> rt; |
| bits<2> bp; |
| |
| bits<32> Inst; |
| |
| let Inst{31-26} = 0b000000; |
| let Inst{25-21} = rs; |
| let Inst{20-16} = rt; |
| let Inst{15-11} = rd; |
| let Inst{10-9} = bp; |
| let Inst{8-6} = 0b000; |
| let Inst{5-0} = funct; |
| } |
| |
| class AUI_FM_MMR6 : MipsR6Inst { |
| bits<5> rs; |
| bits<5> rt; |
| bits<16> imm; |
| |
| bits<32> Inst; |
| |
| let Inst{31-26} = 0b000100; |
| let Inst{25-21} = rt; |
| let Inst{20-16} = rs; |
| let Inst{15-0} = imm; |
| } |
| |
| class POOL32A_LSA_FM<bits<6> funct> : MipsR6Inst { |
| bits<5> rd; |
| bits<5> rs; |
| bits<5> rt; |
| bits<2> imm2; |
| |
| bits<32> Inst; |
| |
| let Inst{31-26} = 0b000000; |
| let Inst{25-21} = rt; |
| let Inst{20-16} = rs; |
| let Inst{15-11} = rd; |
| let Inst{10-9} = imm2; |
| let Inst{8-6} = 0b000; |
| let Inst{5-0} = funct; |
| } |
| |
| class CMP_BRANCH_1R_RT_OFF16_FM_MMR6<bits<6> funct> : MipsR6Inst { |
| bits<5> rt; |
| bits<16> offset; |
| |
| bits<32> Inst; |
| |
| let Inst{31-26} = funct; |
| let Inst{25-21} = rt; |
| let Inst{20-16} = 0b00000; |
| let Inst{15-0} = offset; |
| } |
| |
| class CMP_BRANCH_1R_BOTH_OFF16_FM_MMR6<bits<6> funct> : MipsR6Inst { |
| bits<5> rt; |
| bits<16> offset; |
| |
| bits<32> Inst; |
| |
| let Inst{31-26} = funct; |
| let Inst{25-21} = rt; |
| let Inst{20-16} = rt; |
| let Inst{15-0} = offset; |
| } |
| |
| class ERET_FM_MMR6<string instr_asm> : MMR6Arch<instr_asm> { |
| bits<32> Inst; |
| |
| let Inst{31-26} = 0x00; |
| let Inst{25-16} = 0x00; |
| let Inst{15-6} = 0x3cd; |
| let Inst{5-0} = 0x3c; |
| } |
| |
| class ERETNC_FM_MMR6<string instr_asm> : MMR6Arch<instr_asm> { |
| bits<32> Inst; |
| |
| let Inst{31-26} = 0x00; |
| let Inst{25-17} = 0x00; |
| let Inst{16-16} = 0x01; |
| let Inst{15-6} = 0x3cd; |
| let Inst{5-0} = 0x3c; |
| } |