1//===-- RegisterContextLinux_x86_64.cpp ------------------------*- C++ -*-===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===---------------------------------------------------------------------===// 9 10#include <vector> 11#include "RegisterContextPOSIX_x86.h" 12#include "RegisterContextLinux_i386.h" 13#include "RegisterContextLinux_x86_64.h" 14 15using namespace lldb_private; 16using namespace lldb; 17 18typedef struct _GPR 19{ 20 uint64_t r15; 21 uint64_t r14; 22 uint64_t r13; 23 uint64_t r12; 24 uint64_t rbp; 25 uint64_t rbx; 26 uint64_t r11; 27 uint64_t r10; 28 uint64_t r9; 29 uint64_t r8; 30 uint64_t rax; 31 uint64_t rcx; 32 uint64_t rdx; 33 uint64_t rsi; 34 uint64_t rdi; 35 uint64_t orig_ax; 36 uint64_t rip; 37 uint64_t cs; 38 uint64_t rflags; 39 uint64_t rsp; 40 uint64_t ss; 41 uint64_t fs_base; 42 uint64_t gs_base; 43 uint64_t ds; 44 uint64_t es; 45 uint64_t fs; 46 uint64_t gs; 47} GPR; 48 49struct UserArea 50{ 51 GPR gpr; // General purpose registers. 52 int32_t fpvalid; // True if FPU is being used. 53 int32_t pad0; 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. 62 int32_t pad1; 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. 70}; 71 72#define DR_SIZE sizeof(UserArea::u_debugreg[0]) 73#define DR_OFFSET(reg_index) \ 74 (LLVM_EXTENSION offsetof(UserArea, u_debugreg[reg_index])) 75 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 82 83static const RegisterInfo * 84GetRegisterInfo_i386(const lldb_private::ArchSpec &arch) 85{ 86 static std::vector<lldb_private::RegisterInfo> g_register_infos; 87 88 // Allocate RegisterInfo only once 89 if (g_register_infos.empty()) 90 { 91 // Copy the register information from base class 92 std::unique_ptr<RegisterContextLinux_i386> reg_interface(new RegisterContextLinux_i386 (arch)); 93 const RegisterInfo *base_info = reg_interface->GetRegisterInfo(); 94 g_register_infos.insert(g_register_infos.end(), &base_info[0], &base_info[k_num_registers_i386]); 95 96 //--------------------------------------------------------------------------- 97 // Include RegisterInfos_x86_64 to update the g_register_infos structure 98 // with x86_64 offsets. 99 //--------------------------------------------------------------------------- 100 #define UPDATE_REGISTER_INFOS_I386_STRUCT_WITH_X86_64_OFFSETS 101 #include "RegisterInfos_x86_64.h" 102 #undef UPDATE_REGISTER_INFOS_I386_STRUCT_WITH_X86_64_OFFSETS 103 } 104 105 return &g_register_infos[0]; 106} 107 108RegisterContextLinux_x86_64::RegisterContextLinux_x86_64(const ArchSpec &target_arch) : 109 RegisterInfoInterface(target_arch) 110{ 111} 112 113RegisterContextLinux_x86_64::~RegisterContextLinux_x86_64() 114{ 115} 116 117size_t 118RegisterContextLinux_x86_64::GetGPRSize() 119{ 120 return sizeof(GPR); 121} 122 123const RegisterInfo * 124RegisterContextLinux_x86_64::GetRegisterInfo() 125{ 126 switch (m_target_arch.GetCore()) 127 { 128 case ArchSpec::eCore_x86_32_i386: 129 case ArchSpec::eCore_x86_32_i486: 130 case ArchSpec::eCore_x86_32_i486sx: 131 return GetRegisterInfo_i386 (m_target_arch); 132 case ArchSpec::eCore_x86_64_x86_64: 133 return g_register_infos_x86_64; 134 default: 135 assert(false && "Unhandled target architecture."); 136 return NULL; 137 } 138} 139 140