NativeRegisterContextLinux_arm.h
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//===-- NativeRegisterContextLinux_arm.h ---------------------*- C++ -*-===//
//
// 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
//
//===----------------------------------------------------------------------===//
#if defined(__arm__) || defined(__arm64__) || defined(__aarch64__)
#ifndef lldb_NativeRegisterContextLinux_arm_h
#define lldb_NativeRegisterContextLinux_arm_h
#include "Plugins/Process/Linux/NativeRegisterContextLinux.h"
#include "Plugins/Process/Utility/lldb-arm-register-enums.h"
namespace lldb_private {
namespace process_linux {
class NativeProcessLinux;
class NativeRegisterContextLinux_arm : public NativeRegisterContextLinux {
public:
NativeRegisterContextLinux_arm(const ArchSpec &target_arch,
NativeThreadProtocol &native_thread);
uint32_t GetRegisterSetCount() const override;
const RegisterSet *GetRegisterSet(uint32_t set_index) const override;
uint32_t GetUserRegisterCount() const override;
Status ReadRegister(const RegisterInfo *reg_info,
RegisterValue ®_value) override;
Status WriteRegister(const RegisterInfo *reg_info,
const RegisterValue ®_value) override;
Status ReadAllRegisterValues(lldb::DataBufferSP &data_sp) override;
Status WriteAllRegisterValues(const lldb::DataBufferSP &data_sp) override;
// Hardware breakpoints/watchpoint management functions
uint32_t NumSupportedHardwareBreakpoints() override;
uint32_t SetHardwareBreakpoint(lldb::addr_t addr, size_t size) override;
bool ClearHardwareBreakpoint(uint32_t hw_idx) override;
Status ClearAllHardwareBreakpoints() override;
Status GetHardwareBreakHitIndex(uint32_t &bp_index,
lldb::addr_t trap_addr) override;
uint32_t NumSupportedHardwareWatchpoints() override;
uint32_t SetHardwareWatchpoint(lldb::addr_t addr, size_t size,
uint32_t watch_flags) override;
bool ClearHardwareWatchpoint(uint32_t hw_index) override;
Status ClearAllHardwareWatchpoints() override;
Status GetWatchpointHitIndex(uint32_t &wp_index,
lldb::addr_t trap_addr) override;
lldb::addr_t GetWatchpointHitAddress(uint32_t wp_index) override;
lldb::addr_t GetWatchpointAddress(uint32_t wp_index) override;
uint32_t GetWatchpointSize(uint32_t wp_index);
bool WatchpointIsEnabled(uint32_t wp_index);
// Debug register type select
enum DREGType { eDREGTypeWATCH = 0, eDREGTypeBREAK };
protected:
Status DoReadRegisterValue(uint32_t offset, const char *reg_name,
uint32_t size, RegisterValue &value) override;
Status DoWriteRegisterValue(uint32_t offset, const char *reg_name,
const RegisterValue &value) override;
Status ReadGPR() override;
Status WriteGPR() override;
Status ReadFPR() override;
Status WriteFPR() override;
void *GetGPRBuffer() override { return &m_gpr_arm; }
void *GetFPRBuffer() override { return &m_fpr; }
size_t GetFPRSize() override { return sizeof(m_fpr); }
private:
struct RegInfo {
uint32_t num_registers;
uint32_t num_gpr_registers;
uint32_t num_fpr_registers;
uint32_t last_gpr;
uint32_t first_fpr;
uint32_t last_fpr;
uint32_t first_fpr_v;
uint32_t last_fpr_v;
uint32_t gpr_flags;
};
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;
};
uint32_t m_gpr_arm[k_num_gpr_registers_arm];
RegInfo m_reg_info;
FPU m_fpr;
// Debug register info for hardware breakpoints and watchpoints management.
struct DREG {
lldb::addr_t address; // Breakpoint/watchpoint address value.
lldb::addr_t hit_addr; // Address at which last watchpoint trigger exception
// occurred.
lldb::addr_t real_addr; // Address value that should cause target to stop.
uint32_t control; // Breakpoint/watchpoint control value.
uint32_t refcount; // Serves as enable/disable and reference counter.
};
struct DREG m_hbr_regs[16]; // Arm native linux hardware breakpoints
struct DREG m_hwp_regs[16]; // Arm native linux hardware watchpoints
uint32_t m_max_hwp_supported;
uint32_t m_max_hbp_supported;
bool m_refresh_hwdebug_info;
bool IsGPR(unsigned reg) const;
bool IsFPR(unsigned reg) const;
Status ReadHardwareDebugInfo();
Status WriteHardwareDebugRegs(int hwbType, int hwb_index);
uint32_t CalculateFprOffset(const RegisterInfo *reg_info) const;
};
} // namespace process_linux
} // namespace lldb_private
#endif // #ifndef lldb_NativeRegisterContextLinux_arm_h
#endif // defined(__arm__) || defined(__arm64__) || defined(__aarch64__)