1 //===-- RegisterContextFreeBSD_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 "RegisterContextFreeBSD_i386.h"
13 #include "RegisterContextFreeBSD_x86_64.h"
15 using namespace lldb_private;
18 // http://svnweb.freebsd.org/base/head/sys/x86/include/reg.h
50 uint64_t dr[16]; /* debug registers */
51 /* Index 0-3: debug address registers */
52 /* Index 4-5: reserved */
53 /* Index 6: debug status */
54 /* Index 7: debug control */
55 /* Index 8-15: reserved */
58 #define DR_SIZE sizeof(uint64_t)
59 #define DR_OFFSET(reg_index) \
60 (LLVM_EXTENSION offsetof(dbreg, dr[reg_index]))
63 //---------------------------------------------------------------------------
64 // Include RegisterInfos_x86_64 to declare our g_register_infos_x86_64 structure.
65 //---------------------------------------------------------------------------
66 #define DECLARE_REGISTER_INFOS_X86_64_STRUCT
67 #include "RegisterInfos_x86_64.h"
68 #undef DECLARE_REGISTER_INFOS_X86_64_STRUCT
70 static std::vector<lldb_private::RegisterInfo>&
71 GetSharedRegisterInfoVector ()
73 static std::vector<lldb_private::RegisterInfo> register_infos;
74 return register_infos;
77 static const RegisterInfo *
78 GetRegisterInfo_i386(const lldb_private::ArchSpec& arch)
80 static std::vector<lldb_private::RegisterInfo> g_register_infos (GetSharedRegisterInfoVector ());
82 // Allocate RegisterInfo only once
83 if (g_register_infos.empty())
85 // Copy the register information from base class
86 std::unique_ptr<RegisterContextFreeBSD_i386> reg_interface(new RegisterContextFreeBSD_i386 (arch));
87 const RegisterInfo *base_info = reg_interface->GetRegisterInfo();
88 g_register_infos.insert(g_register_infos.end(), &base_info[0], &base_info[k_num_registers_i386]);
90 //---------------------------------------------------------------------------
91 // Include RegisterInfos_x86_64 to update the g_register_infos structure
92 // with x86_64 offsets.
93 //---------------------------------------------------------------------------
94 #define UPDATE_REGISTER_INFOS_I386_STRUCT_WITH_X86_64_OFFSETS
95 #include "RegisterInfos_x86_64.h"
96 #undef UPDATE_REGISTER_INFOS_I386_STRUCT_WITH_X86_64_OFFSETS
99 return &g_register_infos[0];
102 static const RegisterInfo *
103 PrivateGetRegisterInfoPtr (const lldb_private::ArchSpec& target_arch)
105 switch (target_arch.GetMachine())
107 case llvm::Triple::x86:
108 return GetRegisterInfo_i386 (target_arch);
109 case llvm::Triple::x86_64:
110 return g_register_infos_x86_64;
112 assert(false && "Unhandled target architecture.");
118 PrivateGetRegisterCount (const lldb_private::ArchSpec& target_arch)
120 switch (target_arch.GetMachine())
122 case llvm::Triple::x86:
123 // This vector should have already been filled.
124 assert (!GetSharedRegisterInfoVector ().empty () && "i386 register info vector not filled.");
125 return static_cast<uint32_t> (GetSharedRegisterInfoVector().size ());
126 case llvm::Triple::x86_64:
127 return static_cast<uint32_t> (sizeof (g_register_infos_x86_64) / sizeof (g_register_infos_x86_64 [0]));
129 assert(false && "Unhandled target architecture.");
134 RegisterContextFreeBSD_x86_64::RegisterContextFreeBSD_x86_64(const ArchSpec &target_arch) :
135 lldb_private::RegisterInfoInterface(target_arch),
136 m_register_info_p (PrivateGetRegisterInfoPtr (target_arch)),
137 m_register_count (PrivateGetRegisterCount (target_arch))
142 RegisterContextFreeBSD_x86_64::GetGPRSize() const
148 RegisterContextFreeBSD_x86_64::GetRegisterInfo() const
150 return m_register_info_p;
154 RegisterContextFreeBSD_x86_64::GetRegisterCount () const
156 return m_register_count;