| //===- ARMDisassembler.h - Disassembler for ARM/Thumb ISA -------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file is part of the ARM Disassembler. |
| // It contains the header for ARMDisassembler and ThumbDisassembler, both are |
| // subclasses of MCDisassembler. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef ARMDISASSEMBLER_H |
| #define ARMDISASSEMBLER_H |
| |
| #include "llvm/MC/MCDisassembler.h" |
| |
| namespace llvm { |
| |
| class MCInst; |
| class MemoryObject; |
| class raw_ostream; |
| |
| struct EDInstInfo; |
| |
| /// ARMDisassembler - ARM disassembler for all ARM platforms. |
| class ARMDisassembler : public MCDisassembler { |
| public: |
| /// Constructor - Initializes the disassembler. |
| /// |
| ARMDisassembler() : |
| MCDisassembler() { |
| } |
| |
| ~ARMDisassembler() { |
| } |
| |
| /// getInstruction - See MCDisassembler. |
| bool getInstruction(MCInst &instr, |
| uint64_t &size, |
| const MemoryObject ®ion, |
| uint64_t address, |
| raw_ostream &vStream) const; |
| |
| /// getEDInfo - See MCDisassembler. |
| EDInstInfo *getEDInfo() const; |
| private: |
| }; |
| |
| // Forward declaration. |
| class ARMBasicMCBuilder; |
| |
| /// Session - Keep track of the IT Block progression. |
| class Session { |
| friend class ARMBasicMCBuilder; |
| public: |
| Session() : ITCounter(0), ITState(0) {} |
| ~Session() {} |
| /// InitIT - Initializes ITCounter/ITState. |
| bool InitIT(unsigned short bits7_0); |
| /// UpdateIT - Updates ITCounter/ITState as IT Block progresses. |
| void UpdateIT(); |
| |
| private: |
| unsigned ITCounter; // Possible values: 0, 1, 2, 3, 4. |
| unsigned ITState; // A2.5.2 Consists of IT[7:5] and IT[4:0] initially. |
| }; |
| |
| /// ThumbDisassembler - Thumb disassembler for all ARM platforms. |
| class ThumbDisassembler : public MCDisassembler { |
| public: |
| /// Constructor - Initializes the disassembler. |
| /// |
| ThumbDisassembler() : |
| MCDisassembler(), SO() { |
| } |
| |
| ~ThumbDisassembler() { |
| } |
| |
| /// getInstruction - See MCDisassembler. |
| bool getInstruction(MCInst &instr, |
| uint64_t &size, |
| const MemoryObject ®ion, |
| uint64_t address, |
| raw_ostream &vStream) const; |
| |
| /// getEDInfo - See MCDisassembler. |
| EDInstInfo *getEDInfo() const; |
| private: |
| Session SO; |
| }; |
| |
| } // namespace llvm |
| |
| #endif |