contrib/llvm/tools/lldb/source/Plugins/Process/POSIX/RegisterContextFreeBSD_x86_64.cpp

   1 //===-- RegisterContextFreeBSD_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 "RegisterContextFreeBSD_i386.h"
  13 #include "RegisterContextFreeBSD_x86_64.h"
  14
  15 using namespace lldb_private;
  16 using namespace lldb;
  17
  18 // http://svnweb.freebsd.org/base/head/sys/x86/include/reg.h
  19 typedef struct _GPR
  20 {
  21     uint64_t r15;
  22     uint64_t r14;
  23     uint64_t r13;
  24     uint64_t r12;
  25     uint64_t r11;
  26     uint64_t r10;
  27     uint64_t r9;
  28     uint64_t r8;
  29     uint64_t rdi;
  30     uint64_t rsi;
  31     uint64_t rbp;
  32     uint64_t rbx;
  33     uint64_t rdx;
  34     uint64_t rcx;
  35     uint64_t rax;
  36     uint32_t trapno;
  37     uint16_t fs;
  38     uint16_t gs;
  39     uint32_t err;
  40     uint16_t es;
  41     uint16_t ds;
  42     uint64_t rip;
  43     uint64_t cs;
  44     uint64_t rflags;
  45     uint64_t rsp;
  46     uint64_t ss;
  47 } GPR;
  48
  49 struct dbreg {
  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 */
  56 };
  57
  58 #define DR_SIZE sizeof(uint64_t)
  59 #define DR_OFFSET(reg_index) \
  60     (LLVM_EXTENSION offsetof(dbreg, dr[reg_index]))
  61
  62
  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
  69
  70 static const RegisterInfo *
  71 GetRegisterInfo_i386(const lldb_private::ArchSpec& arch)
  72 {
  73     static std::vector<lldb_private::RegisterInfo> g_register_infos;
  74
  75     // Allocate RegisterInfo only once
  76     if (g_register_infos.empty())
  77     {
  78         // Copy the register information from base class
  79         std::unique_ptr<RegisterContextFreeBSD_i386> reg_interface(new RegisterContextFreeBSD_i386 (arch));
  80         const RegisterInfo *base_info = reg_interface->GetRegisterInfo();
  81         g_register_infos.insert(g_register_infos.end(), &base_info[0], &base_info[k_num_registers_i386]);
  82
  83         //---------------------------------------------------------------------------
  84         // Include RegisterInfos_x86_64 to update the g_register_infos structure
  85         //  with x86_64 offsets.
  86         //---------------------------------------------------------------------------
  87         #define UPDATE_REGISTER_INFOS_I386_STRUCT_WITH_X86_64_OFFSETS
  88         #include "RegisterInfos_x86_64.h"
  89         #undef UPDATE_REGISTER_INFOS_I386_STRUCT_WITH_X86_64_OFFSETS
  90     }
  91
  92     return &g_register_infos[0];
  93 }
  94
  95 RegisterContextFreeBSD_x86_64::RegisterContextFreeBSD_x86_64(const ArchSpec &target_arch) :
  96     RegisterInfoInterface(target_arch)
  97 {
  98 }
  99
 100 RegisterContextFreeBSD_x86_64::~RegisterContextFreeBSD_x86_64()
 101 {
 102 }
 103
 104 size_t
 105 RegisterContextFreeBSD_x86_64::GetGPRSize()
 106 {
 107     return sizeof(GPR);
 108 }
 109
 110 const RegisterInfo *
 111 RegisterContextFreeBSD_x86_64::GetRegisterInfo()
 112 {
 113     switch (m_target_arch.GetCore())
 114     {
 115         case ArchSpec::eCore_x86_32_i386:
 116         case ArchSpec::eCore_x86_32_i486:
 117         case ArchSpec::eCore_x86_32_i486sx:
 118             return GetRegisterInfo_i386 (m_target_arch);
 119         case ArchSpec::eCore_x86_64_x86_64:
 120             return g_register_infos_x86_64;
 121         default:
 122             assert(false && "Unhandled target architecture.");
 123             return NULL;
 124     }
 125 }
 126