NativeRegisterContextLinux_ppc64le.h
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//===-- NativeRegisterContextLinux_ppc64le.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
//
//===----------------------------------------------------------------------===//
// This implementation is related to the OpenPOWER ABI for Power Architecture
// 64-bit ELF V2 ABI
#if defined(__powerpc64__)
#ifndef lldb_NativeRegisterContextLinux_ppc64le_h
#define lldb_NativeRegisterContextLinux_ppc64le_h
#include "Plugins/Process/Linux/NativeRegisterContextLinux.h"
#include "Plugins/Process/Utility/lldb-ppc64le-register-enums.h"
#define DECLARE_REGISTER_INFOS_PPC64LE_STRUCT
#include "Plugins/Process/Utility/RegisterInfos_ppc64le.h"
#undef DECLARE_REGISTER_INFOS_PPC64LE_STRUCT
namespace lldb_private {
namespace process_linux {
class NativeProcessLinux;
class NativeRegisterContextLinux_ppc64le : public NativeRegisterContextLinux {
public:
NativeRegisterContextLinux_ppc64le(const ArchSpec &target_arch,
NativeThreadProtocol &native_thread);
uint32_t GetRegisterSetCount() const override;
uint32_t GetUserRegisterCount() const override;
const RegisterSet *GetRegisterSet(uint32_t set_index) 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 watchpoint management functions
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 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);
protected:
bool IsVMX(unsigned reg);
bool IsVSX(unsigned reg);
Status ReadVMX();
Status WriteVMX();
Status ReadVSX();
Status WriteVSX();
void *GetGPRBuffer() override { return &m_gpr_ppc64le; }
void *GetFPRBuffer() override { return &m_fpr_ppc64le; }
size_t GetFPRSize() override { return sizeof(m_fpr_ppc64le); }
private:
GPR m_gpr_ppc64le; // 64-bit general purpose registers.
FPR m_fpr_ppc64le; // floating-point registers including extended register.
VMX m_vmx_ppc64le; // VMX registers.
VSX m_vsx_ppc64le; // Last lower bytes from first VSX registers.
bool IsGPR(unsigned reg) const;
bool IsFPR(unsigned reg) const;
bool IsVMX(unsigned reg) const;
bool IsVSX(unsigned reg) const;
uint32_t CalculateFprOffset(const RegisterInfo *reg_info) const;
uint32_t CalculateVmxOffset(const RegisterInfo *reg_info) const;
uint32_t CalculateVsxOffset(const RegisterInfo *reg_info) const;
Status ReadHardwareDebugInfo();
Status WriteHardwareDebugRegs();
// Debug register info for hardware 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.
long slot; // Saves the value returned from PTRACE_SETHWDEBUG.
int mode; // Defines if watchpoint is read/write/access.
};
std::array<DREG, 4> m_hwp_regs;
// 16 is just a maximum value, query hardware for actual watchpoint count
uint32_t m_max_hwp_supported = 16;
uint32_t m_max_hbp_supported = 16;
bool m_refresh_hwdebug_info = true;
};
} // namespace process_linux
} // namespace lldb_private
#endif // #ifndef lldb_NativeRegisterContextLinux_ppc64le_h
#endif // defined(__powerpc64__)