lldb/source/Plugins/Process/elf-core/RegisterContextPOSIXCore_arm.cpp

   1 //===-- RegisterContextPOSIXCore_arm.cpp ----------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "RegisterContextPOSIXCore_arm.h"
  10
  11 #include "lldb/Target/Thread.h"
  12 #include "lldb/Utility/RegisterValue.h"
  13
  14 #include <memory>
  15
  16 using namespace lldb_private;
  17
  18 RegisterContextCorePOSIX_arm::RegisterContextCorePOSIX_arm(
  19     Thread &thread, std::unique_ptr<RegisterInfoPOSIX_arm> register_info,
  20     const DataExtractor &gpregset, llvm::ArrayRef<CoreNote> notes)
  21     : RegisterContextPOSIX_arm(thread, std::move(register_info)) {
  22   m_gpr_buffer = std::make_shared<DataBufferHeap>(gpregset.GetDataStart(),
  23                                                   gpregset.GetByteSize());
  24   m_gpr.SetData(m_gpr_buffer);
  25   m_gpr.SetByteOrder(gpregset.GetByteOrder());
  26 }
  27
  28 RegisterContextCorePOSIX_arm::~RegisterContextCorePOSIX_arm() = default;
  29
  30 bool RegisterContextCorePOSIX_arm::ReadGPR() { return true; }
  31
  32 bool RegisterContextCorePOSIX_arm::ReadFPR() { return false; }
  33
  34 bool RegisterContextCorePOSIX_arm::WriteGPR() {
  35   assert(0);
  36   return false;
  37 }
  38
  39 bool RegisterContextCorePOSIX_arm::WriteFPR() {
  40   assert(0);
  41   return false;
  42 }
  43
  44 bool RegisterContextCorePOSIX_arm::ReadRegister(const RegisterInfo *reg_info,
  45                                                 RegisterValue &value) {
  46   lldb::offset_t offset = reg_info->byte_offset;
  47   if (offset + reg_info->byte_size <= GetGPRSize()) {
  48     uint64_t v = m_gpr.GetMaxU64(&offset, reg_info->byte_size);
  49     if (offset == reg_info->byte_offset + reg_info->byte_size) {
  50       value = v;
  51       return true;
  52     }
  53   }
  54   return false;
  55 }
  56
  57 bool RegisterContextCorePOSIX_arm::ReadAllRegisterValues(
  58     lldb::WritableDataBufferSP &data_sp) {
  59   return false;
  60 }
  61
  62 bool RegisterContextCorePOSIX_arm::WriteRegister(const RegisterInfo *reg_info,
  63                                                  const RegisterValue &value) {
  64   return false;
  65 }
  66
  67 bool RegisterContextCorePOSIX_arm::WriteAllRegisterValues(
  68     const lldb::DataBufferSP &data_sp) {
  69   return false;
  70 }
  71
  72 bool RegisterContextCorePOSIX_arm::HardwareSingleStep(bool enable) {
  73   return false;
  74 }