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85 lines
2.5 KiB
TableGen
85 lines
2.5 KiB
TableGen
//===- MipsEVAInstrFormats.td - Mips Instruction Formats ---*- tablegen -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file describes Mips32r6 instruction formats.
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//
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//===----------------------------------------------------------------------===//
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class MipsEVAInst : MipsInst<(outs), (ins), "", [], NoItinerary, FrmOther>,
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PredicateControl, StdArch {
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let DecoderNamespace = "Mips";
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let EncodingPredicates = [HasStdEnc];
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}
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//===----------------------------------------------------------------------===//
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//
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// Field Values
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//
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//===----------------------------------------------------------------------===//
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// Memory Load/Store EVA
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def OPCODE6_LBE : OPCODE6<0b101100>;
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def OPCODE6_LBuE : OPCODE6<0b101000>;
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def OPCODE6_LHE : OPCODE6<0b101101>;
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def OPCODE6_LHuE : OPCODE6<0b101001>;
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def OPCODE6_LWE : OPCODE6<0b101111>;
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def OPCODE6_SBE : OPCODE6<0b011100>;
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def OPCODE6_SHE : OPCODE6<0b011101>;
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def OPCODE6_SWE : OPCODE6<0b011111>;
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// load/store left/right EVA
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def OPCODE6_LWLE : OPCODE6<0b011001>;
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def OPCODE6_LWRE : OPCODE6<0b011010>;
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def OPCODE6_SWLE : OPCODE6<0b100001>;
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def OPCODE6_SWRE : OPCODE6<0b100010>;
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// Load-linked EVA, Store-conditional EVA
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def OPCODE6_LLE : OPCODE6<0b101110>;
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def OPCODE6_SCE : OPCODE6<0b011110>;
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def OPCODE6_TLBINV : OPCODE6<0b000011>;
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def OPCODE6_TLBINVF : OPCODE6<0b000100>;
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def OPCODE6_CACHEE : OPCODE6<0b011011>;
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def OPCODE6_PREFE : OPCODE6<0b100011>;
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def OPGROUP_COP0_TLB : OPGROUP<0b010000>;
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//===----------------------------------------------------------------------===//
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//
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// Encoding Formats
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//
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//===----------------------------------------------------------------------===//
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class SPECIAL3_EVA_LOAD_STORE_FM<OPCODE6 Operation> : MipsEVAInst {
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bits<21> addr;
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bits<5> hint;
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bits<5> base = addr{20-16};
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bits<9> offset = addr{8-0};
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bits<32> Inst;
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let Inst{31-26} = OPGROUP_SPECIAL3.Value;
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let Inst{25-21} = base;
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let Inst{20-16} = hint;
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let Inst{15-7} = offset;
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let Inst{6} = 0;
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let Inst{5-0} = Operation.Value;
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}
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class TLB_FM<OPCODE6 Operation> : MipsEVAInst {
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bits<32> Inst;
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let Inst{31-26} = OPGROUP_COP0_TLB.Value;
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let Inst{25} = 1; // CO
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let Inst{24-6} = 0;
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let Inst{5-0} = Operation.Value;
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}
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