1 //===-- RegisterContextPOSIXCore_arm.cpp ------------------------*- C++ -*-===//
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, RegisterInfoInterface *register_info,
20     const DataExtractor &gpregset, llvm::ArrayRef<CoreNote> notes)
21     : RegisterContextPOSIX_arm(thread, 0, 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() {}
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   uint64_t v = m_gpr.GetMaxU64(&offset, reg_info->byte_size);
48   if (offset == reg_info->byte_offset + reg_info->byte_size) {
49     value = v;
50     return true;
51   }
52   return false;
53 }
54 
55 bool RegisterContextCorePOSIX_arm::ReadAllRegisterValues(
56     lldb::DataBufferSP &data_sp) {
57   return false;
58 }
59 
60 bool RegisterContextCorePOSIX_arm::WriteRegister(const RegisterInfo *reg_info,
61                                                  const RegisterValue &value) {
62   return false;
63 }
64 
65 bool RegisterContextCorePOSIX_arm::WriteAllRegisterValues(
66     const lldb::DataBufferSP &data_sp) {
67   return false;
68 }
69 
70 bool RegisterContextCorePOSIX_arm::HardwareSingleStep(bool enable) {
71   return false;
72 }
73