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1//===- MipsEVAInstrFormats.td - Mips Instruction Formats ---*- tablegen -*-===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8//9// This file describes Mips32r6 instruction formats.10//11//===----------------------------------------------------------------------===//12 13class MipsEVAInst : MipsInst<(outs), (ins), "", [], NoItinerary, FrmOther>,14 StdArch {15 let DecoderNamespace = "Mips";16 let EncodingPredicates = [HasStdEnc];17}18 19//===----------------------------------------------------------------------===//20//21// Field Values22//23//===----------------------------------------------------------------------===//24 25// Memory Load/Store EVA26def OPCODE6_LBE : OPCODE6<0b101100>;27def OPCODE6_LBuE : OPCODE6<0b101000>;28def OPCODE6_LHE : OPCODE6<0b101101>;29def OPCODE6_LHuE : OPCODE6<0b101001>;30def OPCODE6_LWE : OPCODE6<0b101111>;31 32def OPCODE6_SBE : OPCODE6<0b011100>;33def OPCODE6_SHE : OPCODE6<0b011101>;34def OPCODE6_SWE : OPCODE6<0b011111>;35 36// load/store left/right EVA37def OPCODE6_LWLE : OPCODE6<0b011001>;38def OPCODE6_LWRE : OPCODE6<0b011010>;39def OPCODE6_SWLE : OPCODE6<0b100001>;40def OPCODE6_SWRE : OPCODE6<0b100010>;41 42// Load-linked EVA, Store-conditional EVA43def OPCODE6_LLE : OPCODE6<0b101110>;44def OPCODE6_SCE : OPCODE6<0b011110>;45 46def OPCODE6_TLBINV : OPCODE6<0b000011>;47def OPCODE6_TLBINVF : OPCODE6<0b000100>;48 49def OPCODE6_CACHEE : OPCODE6<0b011011>;50def OPCODE6_PREFE : OPCODE6<0b100011>;51 52def OPGROUP_COP0_TLB : OPGROUP<0b010000>;53 54//===----------------------------------------------------------------------===//55//56// Encoding Formats57//58//===----------------------------------------------------------------------===//59 60class SPECIAL3_EVA_LOAD_STORE_FM<OPCODE6 Operation> : MipsEVAInst {61 bits<21> addr;62 bits<5> rt;63 bits<5> base = addr{20-16};64 bits<9> offset = addr{8-0};65 66 bits<32> Inst;67 68 let Inst{31-26} = OPGROUP_SPECIAL3.Value;69 let Inst{25-21} = base;70 let Inst{20-16} = rt;71 let Inst{15-7} = offset;72 let Inst{6} = 0;73 let Inst{5-0} = Operation.Value;74}75 76class TLB_FM<OPCODE6 Operation> : MipsEVAInst {77 bits<32> Inst;78 79 let Inst{31-26} = OPGROUP_COP0_TLB.Value;80 let Inst{25} = 1; // CO81 let Inst{24-6} = 0;82 let Inst{5-0} = Operation.Value;83}84