contrib/llvm/tools/lldb/source/Plugins/Process/elf-core/RegisterContextPOSIXCore_x86_64.cpp

   1 //===-- RegisterContextCorePOSIX_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 "lldb/Core/DataExtractor.h"
  11 #include "lldb/Core/RegisterValue.h"
  12 #include "lldb/Target/Thread.h"
  13 #include "RegisterContextPOSIX.h"
  14 #include "RegisterContextPOSIXCore_x86_64.h"
  15
  16 using namespace lldb_private;
  17
  18 RegisterContextCorePOSIX_x86_64::RegisterContextCorePOSIX_x86_64(Thread &thread,
  19                                                                  RegisterInfoInterface *register_info,
  20                                                                  const DataExtractor &gpregset,
  21                                                                  const DataExtractor &fpregset)
  22     : RegisterContextPOSIX_x86 (thread, 0, register_info)
  23 {
  24     size_t size, len;
  25
  26     size = GetGPRSize();
  27     m_gpregset = new uint8_t[size];
  28     len = gpregset.ExtractBytes (0, size, lldb::eByteOrderLittle, m_gpregset);
  29     assert(len == size);
  30 }
  31
  32 RegisterContextCorePOSIX_x86_64::~RegisterContextCorePOSIX_x86_64()
  33 {
  34     delete [] m_gpregset;
  35 }
  36
  37 bool
  38 RegisterContextCorePOSIX_x86_64::ReadGPR()
  39 {
  40     return m_gpregset != NULL;
  41 }
  42
  43 bool
  44 RegisterContextCorePOSIX_x86_64::ReadFPR()
  45 {
  46     return false;
  47 }
  48
  49 bool
  50 RegisterContextCorePOSIX_x86_64::WriteGPR()
  51 {
  52     assert(0);
  53     return false;
  54 }
  55
  56 bool
  57 RegisterContextCorePOSIX_x86_64::WriteFPR()
  58 {
  59     assert(0);
  60     return false;
  61 }
  62
  63 bool
  64 RegisterContextCorePOSIX_x86_64::ReadRegister(const RegisterInfo *reg_info, RegisterValue &value)
  65 {
  66     switch (reg_info->byte_size)
  67     {
  68         case 4:
  69             value = *(uint32_t *)(m_gpregset + reg_info->byte_offset);
  70             return true;
  71         case 8:
  72             value = *(uint64_t *)(m_gpregset + reg_info->byte_offset);
  73             return true;
  74     }
  75     return false;
  76 }
  77
  78 bool
  79 RegisterContextCorePOSIX_x86_64::ReadAllRegisterValues(lldb::DataBufferSP &data_sp)
  80 {
  81     return false;
  82 }
  83
  84 bool
  85 RegisterContextCorePOSIX_x86_64::WriteRegister(const RegisterInfo *reg_info, const RegisterValue &value)
  86 {
  87     return false;
  88 }
  89
  90 bool
  91 RegisterContextCorePOSIX_x86_64::WriteAllRegisterValues(const lldb::DataBufferSP &data_sp)
  92 {
  93     return false;
  94 }
  95
  96 bool
  97 RegisterContextCorePOSIX_x86_64::HardwareSingleStep(bool enable)
  98 {
  99     return false;
 100 }