1//===-- BPFInstrFormats.td - BPF 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
9class BPFOpClass<bits<3> val> {
10  bits<3> Value = val;
11}
12
13def BPF_LD    : BPFOpClass<0x0>;
14def BPF_LDX   : BPFOpClass<0x1>;
15def BPF_ST    : BPFOpClass<0x2>;
16def BPF_STX   : BPFOpClass<0x3>;
17def BPF_ALU   : BPFOpClass<0x4>;
18def BPF_JMP   : BPFOpClass<0x5>;
19def BPF_JMP32 : BPFOpClass<0x6>;
20def BPF_ALU64 : BPFOpClass<0x7>;
21
22class BPFSrcType<bits<1> val> {
23  bits<1> Value = val;
24}
25
26def BPF_K : BPFSrcType<0x0>;
27def BPF_X : BPFSrcType<0x1>;
28
29class BPFArithOp<bits<4> val> {
30  bits<4> Value = val;
31}
32
33def BPF_ADD  : BPFArithOp<0x0>;
34def BPF_SUB  : BPFArithOp<0x1>;
35def BPF_MUL  : BPFArithOp<0x2>;
36def BPF_DIV  : BPFArithOp<0x3>;
37def BPF_OR   : BPFArithOp<0x4>;
38def BPF_AND  : BPFArithOp<0x5>;
39def BPF_LSH  : BPFArithOp<0x6>;
40def BPF_RSH  : BPFArithOp<0x7>;
41def BPF_NEG  : BPFArithOp<0x8>;
42def BPF_XOR  : BPFArithOp<0xa>;
43def BPF_MOV  : BPFArithOp<0xb>;
44def BPF_ARSH : BPFArithOp<0xc>;
45def BPF_END  : BPFArithOp<0xd>;
46
47class BPFEndDir<bits<1> val> {
48  bits<1> Value = val;
49}
50
51def BPF_TO_LE : BPFSrcType<0x0>;
52def BPF_TO_BE : BPFSrcType<0x1>;
53
54class BPFJumpOp<bits<4> val> {
55  bits<4> Value = val;
56}
57
58def BPF_JA   : BPFJumpOp<0x0>;
59def BPF_JEQ  : BPFJumpOp<0x1>;
60def BPF_JGT  : BPFJumpOp<0x2>;
61def BPF_JGE  : BPFJumpOp<0x3>;
62def BPF_JNE  : BPFJumpOp<0x5>;
63def BPF_JSGT : BPFJumpOp<0x6>;
64def BPF_JSGE : BPFJumpOp<0x7>;
65def BPF_CALL : BPFJumpOp<0x8>;
66def BPF_EXIT : BPFJumpOp<0x9>;
67def BPF_JLT  : BPFJumpOp<0xa>;
68def BPF_JLE  : BPFJumpOp<0xb>;
69def BPF_JSLT : BPFJumpOp<0xc>;
70def BPF_JSLE : BPFJumpOp<0xd>;
71
72class BPFWidthModifer<bits<2> val> {
73  bits<2> Value = val;
74}
75
76def BPF_W  : BPFWidthModifer<0x0>;
77def BPF_H  : BPFWidthModifer<0x1>;
78def BPF_B  : BPFWidthModifer<0x2>;
79def BPF_DW : BPFWidthModifer<0x3>;
80
81class BPFModeModifer<bits<3> val> {
82  bits<3> Value = val;
83}
84
85def BPF_IMM  : BPFModeModifer<0x0>;
86def BPF_ABS  : BPFModeModifer<0x1>;
87def BPF_IND  : BPFModeModifer<0x2>;
88def BPF_MEM  : BPFModeModifer<0x3>;
89def BPF_XADD : BPFModeModifer<0x6>;
90
91class InstBPF<dag outs, dag ins, string asmstr, list<dag> pattern>
92  : Instruction {
93  field bits<64> Inst;
94  field bits<64> SoftFail = 0;
95  let Size = 8;
96
97  let Namespace = "BPF";
98  let DecoderNamespace = "BPF";
99
100  BPFOpClass BPFClass;
101  let Inst{58-56} = BPFClass.Value;
102
103  dag OutOperandList = outs;
104  dag InOperandList = ins;
105  let AsmString = asmstr;
106  let Pattern = pattern;
107}
108
109// Pseudo instructions
110class Pseudo<dag outs, dag ins, string asmstr, list<dag> pattern>
111  : InstBPF<outs, ins, asmstr, pattern> {
112  let Inst{63-0} = 0;
113  let isPseudo = 1;
114}
115