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