1 //===-- RegisterContextPOSIXCore_arm64.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_arm64.h"
10 
11 #include "Plugins/Process/elf-core/RegisterUtilities.h"
12 #include "lldb/Target/Thread.h"
13 #include "lldb/Utility/RegisterValue.h"
14 
15 #include <memory>
16 
17 using namespace lldb_private;
18 
19 RegisterContextCorePOSIX_arm64::RegisterContextCorePOSIX_arm64(
20     Thread &thread, RegisterInfoInterface *register_info,
21     const DataExtractor &gpregset, llvm::ArrayRef<CoreNote> notes)
22     : RegisterContextPOSIX_arm64(thread, 0, register_info) {
23   m_gpr_buffer = std::make_shared<DataBufferHeap>(gpregset.GetDataStart(),
24                                                   gpregset.GetByteSize());
25   m_gpr.SetData(m_gpr_buffer);
26   m_gpr.SetByteOrder(gpregset.GetByteOrder());
27 }
28 
29 RegisterContextCorePOSIX_arm64::~RegisterContextCorePOSIX_arm64() {}
30 
31 bool RegisterContextCorePOSIX_arm64::ReadGPR() { return true; }
32 
33 bool RegisterContextCorePOSIX_arm64::ReadFPR() { return false; }
34 
35 bool RegisterContextCorePOSIX_arm64::WriteGPR() {
36   assert(0);
37   return false;
38 }
39 
40 bool RegisterContextCorePOSIX_arm64::WriteFPR() {
41   assert(0);
42   return false;
43 }
44 
45 bool RegisterContextCorePOSIX_arm64::ReadRegister(const RegisterInfo *reg_info,
46                                                   RegisterValue &value) {
47   lldb::offset_t offset = reg_info->byte_offset;
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   return false;
54 }
55 
56 bool RegisterContextCorePOSIX_arm64::ReadAllRegisterValues(
57     lldb::DataBufferSP &data_sp) {
58   return false;
59 }
60 
61 bool RegisterContextCorePOSIX_arm64::WriteRegister(const RegisterInfo *reg_info,
62                                                    const RegisterValue &value) {
63   return false;
64 }
65 
66 bool RegisterContextCorePOSIX_arm64::WriteAllRegisterValues(
67     const lldb::DataBufferSP &data_sp) {
68   return false;
69 }
70 
71 bool RegisterContextCorePOSIX_arm64::HardwareSingleStep(bool enable) {
72   return false;
73 }
74