citra/src/core/arm/disassembler/arm_disasm.h

// Copyright 2006 The Android Open Source Project

#ifndef ARMDIS_H
#define ARMDIS_H

#include <stdint.h>

// Note: this list of opcodes must match the list used to initialize
// the opflags[] array in opcode.cpp.
enum Opcode {
    OP_INVALID,
    OP_UNDEFINED,
    OP_ADC,
    OP_ADD,
    OP_AND,
    OP_B,
    OP_BL,
    OP_BIC,
    OP_BKPT,
    OP_BLX,
    OP_BX,
    OP_CDP,
    OP_CLZ,
    OP_CMN,
    OP_CMP,
    OP_EOR,
    OP_LDC,
    OP_LDM,
    OP_LDR,
    OP_LDRB,
    OP_LDRBT,
    OP_LDRH,
    OP_LDRSB,
    OP_LDRSH,
    OP_LDRT,
    OP_MCR,
    OP_MLA,
    OP_MOV,
    OP_MRC,
    OP_MRS,
    OP_MSR,
    OP_MUL,
    OP_MVN,
    OP_ORR,
    OP_PLD,
    OP_RSB,
    OP_RSC,
    OP_SBC,
    OP_SMLAL,
    OP_SMULL,
    OP_STC,
    OP_STM,
    OP_STR,
    OP_STRB,
    OP_STRBT,
    OP_STRH,
    OP_STRT,
    OP_SUB,
    OP_SWI,
    OP_SWP,
    OP_SWPB,
    OP_TEQ,
    OP_TST,
    OP_UMLAL,
    OP_UMULL,

    // Define thumb opcodes
    OP_THUMB_UNDEFINED,
    OP_THUMB_ADC,
    OP_THUMB_ADD,
    OP_THUMB_AND,
    OP_THUMB_ASR,
    OP_THUMB_B,
    OP_THUMB_BIC,
    OP_THUMB_BKPT,
    OP_THUMB_BL,
    OP_THUMB_BLX,
    OP_THUMB_BX,
    OP_THUMB_CMN,
    OP_THUMB_CMP,
    OP_THUMB_EOR,
    OP_THUMB_LDMIA,
    OP_THUMB_LDR,
    OP_THUMB_LDRB,
    OP_THUMB_LDRH,
    OP_THUMB_LDRSB,
    OP_THUMB_LDRSH,
    OP_THUMB_LSL,
    OP_THUMB_LSR,
    OP_THUMB_MOV,
    OP_THUMB_MUL,
    OP_THUMB_MVN,
    OP_THUMB_NEG,
    OP_THUMB_ORR,
    OP_THUMB_POP,
    OP_THUMB_PUSH,
    OP_THUMB_ROR,
    OP_THUMB_SBC,
    OP_THUMB_STMIA,
    OP_THUMB_STR,
    OP_THUMB_STRB,
    OP_THUMB_STRH,
    OP_THUMB_SUB,
    OP_THUMB_SWI,
    OP_THUMB_TST,

    OP_END                // must be last
};

class ARM_Disasm {
 public:
  static char *disasm(uint32_t addr, uint32_t insn, char *buffer);
  static Opcode decode(uint32_t insn);

 private:
  static Opcode decode00(uint32_t insn);
  static Opcode decode01(uint32_t insn);
  static Opcode decode10(uint32_t insn);
  static Opcode decode11(uint32_t insn);
  static Opcode decode_mul(uint32_t insn);
  static Opcode decode_ldrh(uint32_t insn);
  static Opcode decode_alu(uint32_t insn);

  static char *disasm_alu(Opcode opcode, uint32_t insn, char *ptr);
  static char *disasm_branch(uint32_t addr, Opcode opcode, uint32_t insn, char *ptr);
  static char *disasm_bx(uint32_t insn, char *ptr);
  static char *disasm_bkpt(uint32_t insn, char *ptr);
  static char *disasm_clz(uint32_t insn, char *ptr);
  static char *disasm_memblock(Opcode opcode, uint32_t insn, char *ptr);
  static char *disasm_mem(uint32_t insn, char *ptr);
  static char *disasm_memhalf(uint32_t insn, char *ptr);
  static char *disasm_mcr(Opcode opcode, uint32_t insn, char *ptr);
  static char *disasm_mla(Opcode opcode, uint32_t insn, char *ptr);
  static char *disasm_umlal(Opcode opcode, uint32_t insn, char *ptr);
  static char *disasm_mul(Opcode opcode, uint32_t insn, char *ptr);
  static char *disasm_mrs(uint32_t insn, char *ptr);
  static char *disasm_msr(uint32_t insn, char *ptr);
  static char *disasm_pld(uint32_t insn, char *ptr);
  static char *disasm_swi(uint32_t insn, char *ptr);
  static char *disasm_swp(Opcode opcode, uint32_t insn, char *ptr);
};

extern char *disasm_insn_thumb(uint32_t pc, uint32_t insn1, uint32_t insn2, char *result);
extern Opcode decode_insn_thumb(uint32_t given);

#endif /* ARMDIS_H */