contrib/llvm/tools/lldb/source/Plugins/Process/elf-core/RegisterContextPOSIXCore_s390x.cpp

   1 //===-- RegisterContextPOSIXCore_s390x.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 "RegisterContextPOSIXCore_s390x.h"
  11
  12 #include "lldb/Target/Thread.h"
  13 #include "lldb/Utility/DataBufferHeap.h"
  14 #include "lldb/Utility/RegisterValue.h"
  15
  16 using namespace lldb_private;
  17
  18 RegisterContextCorePOSIX_s390x::RegisterContextCorePOSIX_s390x(
  19     Thread &thread, RegisterInfoInterface *register_info,
  20     const DataExtractor &gpregset, llvm::ArrayRef<CoreNote> notes)
  21     : RegisterContextPOSIX_s390x(thread, 0, register_info) {
  22   m_gpr_buffer.reset(
  23       new DataBufferHeap(gpregset.GetDataStart(), gpregset.GetByteSize()));
  24   m_gpr.SetData(m_gpr_buffer);
  25   m_gpr.SetByteOrder(gpregset.GetByteOrder());
  26
  27   DataExtractor fpregset = getRegset(
  28       notes, register_info->GetTargetArchitecture().GetTriple(), FPR_Desc);
  29   m_fpr_buffer.reset(
  30       new DataBufferHeap(fpregset.GetDataStart(), fpregset.GetByteSize()));
  31   m_fpr.SetData(m_fpr_buffer);
  32   m_fpr.SetByteOrder(fpregset.GetByteOrder());
  33 }
  34
  35 RegisterContextCorePOSIX_s390x::~RegisterContextCorePOSIX_s390x() {}
  36
  37 bool RegisterContextCorePOSIX_s390x::ReadGPR() { return true; }
  38
  39 bool RegisterContextCorePOSIX_s390x::ReadFPR() { return true; }
  40
  41 bool RegisterContextCorePOSIX_s390x::WriteGPR() {
  42   assert(0);
  43   return false;
  44 }
  45
  46 bool RegisterContextCorePOSIX_s390x::WriteFPR() {
  47   assert(0);
  48   return false;
  49 }
  50
  51 bool RegisterContextCorePOSIX_s390x::ReadRegister(const RegisterInfo *reg_info,
  52                                                   RegisterValue &value) {
  53   const uint32_t reg = reg_info->kinds[lldb::eRegisterKindLLDB];
  54   if (reg == LLDB_INVALID_REGNUM)
  55     return false;
  56
  57   if (IsGPR(reg)) {
  58     lldb::offset_t offset = reg_info->byte_offset;
  59     uint64_t v = m_gpr.GetMaxU64(&offset, reg_info->byte_size);
  60     if (offset == reg_info->byte_offset + reg_info->byte_size) {
  61       value.SetUInt(v, reg_info->byte_size);
  62       return true;
  63     }
  64   }
  65
  66   if (IsFPR(reg)) {
  67     lldb::offset_t offset = reg_info->byte_offset;
  68     uint64_t v = m_fpr.GetMaxU64(&offset, reg_info->byte_size);
  69     if (offset == reg_info->byte_offset + reg_info->byte_size) {
  70       value.SetUInt(v, reg_info->byte_size);
  71       return true;
  72     }
  73   }
  74
  75   return false;
  76 }
  77
  78 bool RegisterContextCorePOSIX_s390x::ReadAllRegisterValues(
  79     lldb::DataBufferSP &data_sp) {
  80   return false;
  81 }
  82
  83 bool RegisterContextCorePOSIX_s390x::WriteRegister(const RegisterInfo *reg_info,
  84                                                    const RegisterValue &value) {
  85   return false;
  86 }
  87
  88 bool RegisterContextCorePOSIX_s390x::WriteAllRegisterValues(
  89     const lldb::DataBufferSP &data_sp) {
  90   return false;
  91 }
  92
  93 bool RegisterContextCorePOSIX_s390x::HardwareSingleStep(bool enable) {
  94   return false;
  95 }