lldb/source/Plugins/Process/Utility/RegisterContextPOSIX_arm.cpp

   1 //===-- RegisterContextPOSIX_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 <cerrno>
  10 #include <cstdint>
  11 #include <cstring>
  12
  13 #include "lldb/Target/Process.h"
  14 #include "lldb/Target/Target.h"
  15 #include "lldb/Target/Thread.h"
  16 #include "lldb/Utility/DataBufferHeap.h"
  17 #include "lldb/Utility/DataExtractor.h"
  18 #include "lldb/Utility/Endian.h"
  19 #include "lldb/Utility/RegisterValue.h"
  20 #include "lldb/Utility/Scalar.h"
  21 #include "llvm/Support/Compiler.h"
  22
  23 #include "RegisterContextPOSIX_arm.h"
  24
  25 using namespace lldb;
  26 using namespace lldb_private;
  27
  28 bool RegisterContextPOSIX_arm::IsGPR(unsigned reg) {
  29   if (m_register_info_up->GetRegisterSetFromRegisterIndex(reg) ==
  30       RegisterInfoPOSIX_arm::GPRegSet)
  31     return true;
  32   return false;
  33 }
  34
  35 bool RegisterContextPOSIX_arm::IsFPR(unsigned reg) {
  36   if (m_register_info_up->GetRegisterSetFromRegisterIndex(reg) ==
  37       RegisterInfoPOSIX_arm::FPRegSet)
  38     return true;
  39   return false;
  40 }
  41
  42 RegisterContextPOSIX_arm::RegisterContextPOSIX_arm(
  43     lldb_private::Thread &thread,
  44     std::unique_ptr<RegisterInfoPOSIX_arm> register_info)
  45     : lldb_private::RegisterContext(thread, 0),
  46       m_register_info_up(std::move(register_info)) {}
  47
  48 RegisterContextPOSIX_arm::~RegisterContextPOSIX_arm() = default;
  49
  50 void RegisterContextPOSIX_arm::Invalidate() {}
  51
  52 void RegisterContextPOSIX_arm::InvalidateAllRegisters() {}
  53
  54 unsigned RegisterContextPOSIX_arm::GetRegisterOffset(unsigned reg) {
  55   return m_register_info_up->GetRegisterInfo()[reg].byte_offset;
  56 }
  57
  58 unsigned RegisterContextPOSIX_arm::GetRegisterSize(unsigned reg) {
  59   return m_register_info_up->GetRegisterInfo()[reg].byte_size;
  60 }
  61
  62 size_t RegisterContextPOSIX_arm::GetRegisterCount() {
  63   return m_register_info_up->GetRegisterCount();
  64 }
  65
  66 size_t RegisterContextPOSIX_arm::GetGPRSize() {
  67   return m_register_info_up->GetGPRSize();
  68 }
  69
  70 const lldb_private::RegisterInfo *RegisterContextPOSIX_arm::GetRegisterInfo() {
  71   // Commonly, this method is overridden and g_register_infos is copied and
  72   // specialized. So, use GetRegisterInfo() rather than g_register_infos in
  73   // this scope.
  74   return m_register_info_up->GetRegisterInfo();
  75 }
  76
  77 const lldb_private::RegisterInfo *
  78 RegisterContextPOSIX_arm::GetRegisterInfoAtIndex(size_t reg) {
  79   if (reg < GetRegisterCount())
  80     return &GetRegisterInfo()[reg];
  81
  82   return nullptr;
  83 }
  84
  85 size_t RegisterContextPOSIX_arm::GetRegisterSetCount() {
  86   return m_register_info_up->GetRegisterSetCount();
  87 }
  88
  89 const lldb_private::RegisterSet *
  90 RegisterContextPOSIX_arm::GetRegisterSet(size_t set) {
  91   return m_register_info_up->GetRegisterSet(set);
  92 }
  93
  94 const char *RegisterContextPOSIX_arm::GetRegisterName(unsigned reg) {
  95   if (reg < GetRegisterCount())
  96     return GetRegisterInfo()[reg].name;
  97   return nullptr;
  98 }