MipsEVAInstrFormats.td revision 353358 
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-exception
6//
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 Values
22//
23//===----------------------------------------------------------------------===//
24
25// Memory Load/Store EVA
26def 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 EVA
37def 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 EVA
43def 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 Formats
57//
58//===----------------------------------------------------------------------===//
59
60class SPECIAL3_EVA_LOAD_STORE_FM<OPCODE6 Operation> : MipsEVAInst {
61  bits<21> addr;
62  bits<5> hint;
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} = hint;
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;       // CO
81  let Inst{24-6} = 0;
82  let Inst{5-0} = Operation.Value;
83}
84