RegisterInfo_arm.h

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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
 
#ifndef LLDB_SOURCE_PLUGINS_PROCESS_UTILITY_REGISTERINFO_ARM_H
#define LLDB_SOURCE_PLUGINS_PROCESS_UTILITY_REGISTERINFO_ARM_H
 
#include "RegisterInfoAndSetInterface.h"
#include "lldb/Target/RegisterContext.h"
#include "lldb/lldb-private.h"
 
class RegisterInfo_arm : public lldb_private::RegisterInfoAndSetInterface {
public:
  enum { GPRegSet = 0, FPRegSet, TLSRegSet };
 
  struct GPR {
    uint32_t r[16]; // R0-R15
    uint32_t cpsr;  // CPSR
  };
 
  struct QReg {
    uint8_t bytes[16];
  };
 
  struct FPU {
    union {
      uint32_t s[32];
      uint64_t d[32];
      QReg q[16]; // the 128-bit NEON registers
    } floats;
    uint32_t fpscr;
  };
  struct EXC {
    uint32_t exception;
    uint32_t fsr; /* Fault status */
    uint32_t far; /* Virtual Fault Address */
  };
 
  struct TLS {
    uint32_t tpidruro;
  };
 
  struct DBG {
    uint32_t bvr[16];
    uint32_t bcr[16];
    uint32_t wvr[16];
    uint32_t wcr[16];
  };
 
  RegisterInfo_arm(const lldb_private::ArchSpec &target_arch,
                        bool has_tls_reg = false);
 
  size_t GetGPRSize() const override;
 
  size_t GetFPRSize() const override;
 
  const lldb_private::RegisterInfo *GetRegisterInfo() const override;
 
  uint32_t GetRegisterCount() const override;
 
  const lldb_private::RegisterSet *
  GetRegisterSet(size_t reg_set) const override;
 
  size_t GetRegisterSetCount() const override;
 
  size_t GetRegisterSetFromRegisterIndex(uint32_t reg_index) const override;
 
private:
  const lldb_private::RegisterInfo *m_register_info_p;
  uint32_t m_register_info_count;
  // Only provide information about the TLS register to users of this class that
  // can handle it. Currently, only `NativeRegisterContextLinux_arm` reads it.
  bool m_has_tls_reg;
};
 
#endif // LLDB_SOURCE_PLUGINS_PROCESS_UTILITY_REGISTERINFO_ARM_H