1 //===-- RegisterContextLinux_x86_64.cpp ------------------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===---------------------------------------------------------------------===//
11 #include "RegisterContextPOSIX_x86.h"
12 #include "RegisterContextLinux_i386.h"
13 #include "RegisterContextLinux_x86_64.h"
15 using namespace lldb_private;
51 GPR gpr; // General purpose registers.
52 int32_t fpvalid; // True if FPU is being used.
54 FXSAVE i387; // General purpose floating point registers (see FPR for extended register sets).
55 uint64_t tsize; // Text segment size.
56 uint64_t dsize; // Data segment size.
57 uint64_t ssize; // Stack segment size.
58 uint64_t start_code; // VM address of text.
59 uint64_t start_stack; // VM address of stack bottom (top in rsp).
60 int64_t signal; // Signal causing core dump.
61 int32_t reserved; // Unused.
63 uint64_t ar0; // Location of GPR's.
64 FXSAVE* fpstate; // Location of FPR's.
65 uint64_t magic; // Identifier for core dumps.
66 char u_comm[32]; // Command causing core dump.
67 uint64_t u_debugreg[8]; // Debug registers (DR0 - DR7).
68 uint64_t error_code; // CPU error code.
69 uint64_t fault_address; // Control register CR3.
72 #define DR_SIZE sizeof(((UserArea*)NULL)->u_debugreg[0])
73 #define DR_OFFSET(reg_index) \
74 (LLVM_EXTENSION offsetof(UserArea, u_debugreg[reg_index]))
76 //---------------------------------------------------------------------------
77 // Include RegisterInfos_x86_64 to declare our g_register_infos_x86_64 structure.
78 //---------------------------------------------------------------------------
79 #define DECLARE_REGISTER_INFOS_X86_64_STRUCT
80 #include "RegisterInfos_x86_64.h"
81 #undef DECLARE_REGISTER_INFOS_X86_64_STRUCT
83 static std::vector<lldb_private::RegisterInfo>&
84 GetPrivateRegisterInfoVector ()
86 static std::vector<lldb_private::RegisterInfo> g_register_infos;
87 return g_register_infos;
90 static const RegisterInfo *
91 GetRegisterInfo_i386(const lldb_private::ArchSpec &arch)
93 std::vector<lldb_private::RegisterInfo> &g_register_infos = GetPrivateRegisterInfoVector ();
95 // Allocate RegisterInfo only once
96 if (g_register_infos.empty())
98 // Copy the register information from base class
99 std::unique_ptr<RegisterContextLinux_i386> reg_interface(new RegisterContextLinux_i386 (arch));
100 const RegisterInfo *base_info = reg_interface->GetRegisterInfo();
101 g_register_infos.insert(g_register_infos.end(), &base_info[0], &base_info[k_num_registers_i386]);
103 //---------------------------------------------------------------------------
104 // Include RegisterInfos_x86_64 to update the g_register_infos structure
105 // with x86_64 offsets.
106 //---------------------------------------------------------------------------
107 #define UPDATE_REGISTER_INFOS_I386_STRUCT_WITH_X86_64_OFFSETS
108 #include "RegisterInfos_x86_64.h"
109 #undef UPDATE_REGISTER_INFOS_I386_STRUCT_WITH_X86_64_OFFSETS
112 return &g_register_infos[0];
115 static const RegisterInfo *
116 GetRegisterInfoPtr (const ArchSpec &target_arch)
118 switch (target_arch.GetMachine())
120 case llvm::Triple::x86:
121 return GetRegisterInfo_i386 (target_arch);
122 case llvm::Triple::x86_64:
123 return g_register_infos_x86_64;
125 assert(false && "Unhandled target architecture.");
131 GetRegisterInfoCount (const ArchSpec &target_arch)
133 switch (target_arch.GetMachine())
135 case llvm::Triple::x86:
137 assert (!GetPrivateRegisterInfoVector ().empty () && "i386 register info not yet filled.");
138 return static_cast<uint32_t> (GetPrivateRegisterInfoVector ().size ());
140 case llvm::Triple::x86_64:
141 return static_cast<uint32_t> (sizeof (g_register_infos_x86_64) / sizeof (g_register_infos_x86_64 [0]));
143 assert(false && "Unhandled target architecture.");
148 RegisterContextLinux_x86_64::RegisterContextLinux_x86_64(const ArchSpec &target_arch) :
149 lldb_private::RegisterInfoInterface(target_arch),
150 m_register_info_p (GetRegisterInfoPtr (target_arch)),
151 m_register_info_count (GetRegisterInfoCount (target_arch))
156 RegisterContextLinux_x86_64::GetGPRSize() const
162 RegisterContextLinux_x86_64::GetRegisterInfo() const
164 return m_register_info_p;
168 RegisterContextLinux_x86_64::GetRegisterCount () const
170 return m_register_info_count;