LLVM  9.0.0svn
MCFixedLenDisassembler.h
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1 //===-- llvm/MC/MCFixedLenDisassembler.h - Decoder driver -------*- C++ -*-===//
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 // Fixed length disassembler decoder state machine driver.
9 //===----------------------------------------------------------------------===//
10 #ifndef LLVM_MC_MCFIXEDLENDISASSEMBLER_H
11 #define LLVM_MC_MCFIXEDLENDISASSEMBLER_H
12 
13 namespace llvm {
14 
15 namespace MCD {
16 // Disassembler state machine opcodes.
17 enum DecoderOps {
18  OPC_ExtractField = 1, // OPC_ExtractField(uint8_t Start, uint8_t Len)
19  OPC_FilterValue, // OPC_FilterValue(uleb128 Val, uint16_t NumToSkip)
20  OPC_CheckField, // OPC_CheckField(uint8_t Start, uint8_t Len,
21  // uleb128 Val, uint16_t NumToSkip)
22  OPC_CheckPredicate, // OPC_CheckPredicate(uleb128 PIdx, uint16_t NumToSkip)
23  OPC_Decode, // OPC_Decode(uleb128 Opcode, uleb128 DIdx)
24  OPC_TryDecode, // OPC_TryDecode(uleb128 Opcode, uleb128 DIdx,
25  // uint16_t NumToSkip)
26  OPC_SoftFail, // OPC_SoftFail(uleb128 PMask, uleb128 NMask)
27  OPC_Fail // OPC_Fail()
28 };
29 
30 } // namespace MCDecode
31 } // namespace llvm
32 
33 #endif
This class represents lattice values for constants.
Definition: AllocatorList.h:23