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::DataBufferSP &data_sp) override; 47 48 Status WriteAllRegisterValues(const lldb::DataBufferSP &data_sp) override; 49 50 //------------------------------------------------------------------ 51 // Hardware watchpoint management functions 52 //------------------------------------------------------------------ 53 54 uint32_t NumSupportedHardwareWatchpoints() override; 55 56 uint32_t SetHardwareWatchpoint(lldb::addr_t addr, size_t size, 57 uint32_t watch_flags) override; 58 59 bool ClearHardwareWatchpoint(uint32_t hw_index) override; 60 61 Status GetWatchpointHitIndex(uint32_t &wp_index, 62 lldb::addr_t trap_addr) override; 63 64 lldb::addr_t GetWatchpointHitAddress(uint32_t wp_index) override; 65 66 lldb::addr_t GetWatchpointAddress(uint32_t wp_index) override; 67 68 uint32_t GetWatchpointSize(uint32_t wp_index); 69 70 bool WatchpointIsEnabled(uint32_t wp_index); 71 72 protected: 73 Status DoReadGPR(void *buf, size_t buf_size) override; 74 75 Status DoWriteGPR(void *buf, size_t buf_size) override; 76 77 Status DoReadFPR(void *buf, size_t buf_size) override; 78 79 Status DoWriteFPR(void *buf, size_t buf_size) override; 80 81 bool IsVMX(unsigned reg); 82 83 bool IsVSX(unsigned reg); 84 85 Status ReadVMX(); 86 87 Status WriteVMX(); 88 89 Status ReadVSX(); 90 91 Status WriteVSX(); 92 93 void *GetGPRBuffer() override { return &m_gpr_ppc64le; } 94 95 void *GetFPRBuffer() override { return &m_fpr_ppc64le; } 96 97 size_t GetFPRSize() override { return sizeof(m_fpr_ppc64le); } 98 99 private: 100 GPR m_gpr_ppc64le; // 64-bit general purpose registers. 101 FPR m_fpr_ppc64le; // floating-point registers including extended register. 102 VMX m_vmx_ppc64le; // VMX registers. 103 VSX m_vsx_ppc64le; // Last lower bytes from first VSX registers. 104 105 bool IsGPR(unsigned reg) const; 106 107 bool IsFPR(unsigned reg) const; 108 109 bool IsVMX(unsigned reg) const; 110 111 bool IsVSX(unsigned reg) const; 112 113 uint32_t CalculateFprOffset(const RegisterInfo *reg_info) const; 114 115 uint32_t CalculateVmxOffset(const RegisterInfo *reg_info) const; 116 117 uint32_t CalculateVsxOffset(const RegisterInfo *reg_info) const; 118 119 Status ReadHardwareDebugInfo(); 120 121 Status WriteHardwareDebugRegs(); 122 123 // Debug register info for hardware watchpoints management. 124 struct DREG { 125 lldb::addr_t address; // Breakpoint/watchpoint address value. 126 lldb::addr_t hit_addr; // Address at which last watchpoint trigger 127 // exception occurred. 128 lldb::addr_t real_addr; // Address value that should cause target to stop. 129 uint32_t control; // Breakpoint/watchpoint control value. 130 uint32_t refcount; // Serves as enable/disable and reference counter. 131 long slot; // Saves the value returned from PTRACE_SETHWDEBUG. 132 int mode; // Defines if watchpoint is read/write/access. 133 }; 134 135 std::array<DREG, 4> m_hwp_regs; 136 137 // 16 is just a maximum value, query hardware for actual watchpoint count 138 uint32_t m_max_hwp_supported = 16; 139 uint32_t m_max_hbp_supported = 16; 140 bool m_refresh_hwdebug_info = true; 141 }; 142 143 } // namespace process_linux 144 } // namespace lldb_private 145 146 #endif // #ifndef lldb_NativeRegisterContextLinux_ppc64le_h 147 148 #endif // defined(__powerpc64__) 149