MipsEVAInstrFormats.td
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//===- MipsEVAInstrFormats.td - Mips Instruction Formats ---*- tablegen -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file describes Mips32r6 instruction formats.
//
//===----------------------------------------------------------------------===//
class MipsEVAInst : MipsInst<(outs), (ins), "", [], NoItinerary, FrmOther>,
StdArch {
let DecoderNamespace = "Mips";
let EncodingPredicates = [HasStdEnc];
}
//===----------------------------------------------------------------------===//
//
// Field Values
//
//===----------------------------------------------------------------------===//
// Memory Load/Store EVA
def OPCODE6_LBE : OPCODE6<0b101100>;
def OPCODE6_LBuE : OPCODE6<0b101000>;
def OPCODE6_LHE : OPCODE6<0b101101>;
def OPCODE6_LHuE : OPCODE6<0b101001>;
def OPCODE6_LWE : OPCODE6<0b101111>;
def OPCODE6_SBE : OPCODE6<0b011100>;
def OPCODE6_SHE : OPCODE6<0b011101>;
def OPCODE6_SWE : OPCODE6<0b011111>;
// load/store left/right EVA
def OPCODE6_LWLE : OPCODE6<0b011001>;
def OPCODE6_LWRE : OPCODE6<0b011010>;
def OPCODE6_SWLE : OPCODE6<0b100001>;
def OPCODE6_SWRE : OPCODE6<0b100010>;
// Load-linked EVA, Store-conditional EVA
def OPCODE6_LLE : OPCODE6<0b101110>;
def OPCODE6_SCE : OPCODE6<0b011110>;
def OPCODE6_TLBINV : OPCODE6<0b000011>;
def OPCODE6_TLBINVF : OPCODE6<0b000100>;
def OPCODE6_CACHEE : OPCODE6<0b011011>;
def OPCODE6_PREFE : OPCODE6<0b100011>;
def OPGROUP_COP0_TLB : OPGROUP<0b010000>;
//===----------------------------------------------------------------------===//
//
// Encoding Formats
//
//===----------------------------------------------------------------------===//
class SPECIAL3_EVA_LOAD_STORE_FM<OPCODE6 Operation> : MipsEVAInst {
bits<21> addr;
bits<5> hint;
bits<5> base = addr{20-16};
bits<9> offset = addr{8-0};
bits<32> Inst;
let Inst{31-26} = OPGROUP_SPECIAL3.Value;
let Inst{25-21} = base;
let Inst{20-16} = hint;
let Inst{15-7} = offset;
let Inst{6} = 0;
let Inst{5-0} = Operation.Value;
}
class TLB_FM<OPCODE6 Operation> : MipsEVAInst {
bits<32> Inst;
let Inst{31-26} = OPGROUP_COP0_TLB.Value;
let Inst{25} = 1; // CO
let Inst{24-6} = 0;
let Inst{5-0} = Operation.Value;
}