1 //===-- NativeRegisterContextLinux_ppc64le.h --------------------*- C++ -*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 // This implementation is related to the OpenPOWER ABI for Power Architecture 10 // 64-bit ELF V2 ABI 11 12 #if defined(__powerpc64__) 13 14 #ifndef lldb_NativeRegisterContextLinux_ppc64le_h 15 #define lldb_NativeRegisterContextLinux_ppc64le_h 16 17 #include "Plugins/Process/Linux/NativeRegisterContextLinux.h" 18 #include "Plugins/Process/Utility/lldb-ppc64le-register-enums.h" 19 20 #define DECLARE_REGISTER_INFOS_PPC64LE_STRUCT 21 #include "Plugins/Process/Utility/RegisterInfos_ppc64le.h" 22 #undef DECLARE_REGISTER_INFOS_PPC64LE_STRUCT 23 24 namespace lldb_private { 25 namespace process_linux { 26 27 class NativeProcessLinux; 28 29 class NativeRegisterContextLinux_ppc64le : public NativeRegisterContextLinux { 30 public: 31 NativeRegisterContextLinux_ppc64le(const ArchSpec &target_arch, 32 NativeThreadProtocol &native_thread); 33 34 uint32_t GetRegisterSetCount() const override; 35 36 uint32_t GetUserRegisterCount() const override; 37 38 const RegisterSet *GetRegisterSet(uint32_t set_index) const override; 39 40 Status ReadRegister(const RegisterInfo *reg_info, 41 RegisterValue ®_value) override; 42 43 Status WriteRegister(const RegisterInfo *reg_info, 44 const RegisterValue ®_value) override; 45 46 Status ReadAllRegisterValues(lldb::WritableDataBufferSP &data_sp) override; 47 48 Status WriteAllRegisterValues(const lldb::DataBufferSP &data_sp) override; 49 50 // Hardware watchpoint management functions 51 52 uint32_t NumSupportedHardwareWatchpoints() override; 53 54 uint32_t SetHardwareWatchpoint(lldb::addr_t addr, size_t size, 55 uint32_t watch_flags) override; 56 57 bool ClearHardwareWatchpoint(uint32_t hw_index) override; 58 59 Status GetWatchpointHitIndex(uint32_t &wp_index, 60 lldb::addr_t trap_addr) override; 61 62 lldb::addr_t GetWatchpointHitAddress(uint32_t wp_index) override; 63 64 lldb::addr_t GetWatchpointAddress(uint32_t wp_index) override; 65 66 uint32_t GetWatchpointSize(uint32_t wp_index); 67 68 bool WatchpointIsEnabled(uint32_t wp_index); 69 70 protected: 71 bool IsVMX(unsigned reg); 72 73 bool IsVSX(unsigned reg); 74 75 Status ReadVMX(); 76 77 Status WriteVMX(); 78 79 Status ReadVSX(); 80 81 Status WriteVSX(); 82 GetGPRBuffer()83 void *GetGPRBuffer() override { return &m_gpr_ppc64le; } 84 GetFPRBuffer()85 void *GetFPRBuffer() override { return &m_fpr_ppc64le; } 86 GetFPRSize()87 size_t GetFPRSize() override { return sizeof(m_fpr_ppc64le); } 88 89 private: 90 GPR m_gpr_ppc64le; // 64-bit general purpose registers. 91 FPR m_fpr_ppc64le; // floating-point registers including extended register. 92 VMX m_vmx_ppc64le; // VMX registers. 93 VSX m_vsx_ppc64le; // Last lower bytes from first VSX registers. 94 95 bool IsGPR(unsigned reg) const; 96 97 bool IsFPR(unsigned reg) const; 98 99 bool IsVMX(unsigned reg) const; 100 101 bool IsVSX(unsigned reg) const; 102 103 uint32_t CalculateFprOffset(const RegisterInfo *reg_info) const; 104 105 uint32_t CalculateVmxOffset(const RegisterInfo *reg_info) const; 106 107 uint32_t CalculateVsxOffset(const RegisterInfo *reg_info) const; 108 109 Status ReadHardwareDebugInfo(); 110 111 Status WriteHardwareDebugRegs(); 112 113 // Debug register info for hardware watchpoints management. 114 struct DREG { 115 lldb::addr_t address; // Breakpoint/watchpoint address value. 116 lldb::addr_t hit_addr; // Address at which last watchpoint trigger 117 // exception occurred. 118 lldb::addr_t real_addr; // Address value that should cause target to stop. 119 uint32_t control; // Breakpoint/watchpoint control value. 120 uint32_t refcount; // Serves as enable/disable and reference counter. 121 long slot; // Saves the value returned from PTRACE_SETHWDEBUG. 122 int mode; // Defines if watchpoint is read/write/access. 123 }; 124 125 std::array<DREG, 16> m_hwp_regs; 126 127 // 16 is just a maximum value, query hardware for actual watchpoint count 128 uint32_t m_max_hwp_supported = 16; 129 uint32_t m_max_hbp_supported = 16; 130 bool m_refresh_hwdebug_info = true; 131 }; 132 133 } // namespace process_linux 134 } // namespace lldb_private 135 136 #endif // #ifndef lldb_NativeRegisterContextLinux_ppc64le_h 137 138 #endif // defined(__powerpc64__) 139