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 }
99