1 //===-- RegisterContextPOSIX_arm64.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 <cstring>
10 #include <errno.h>
11 #include <stdint.h>
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_arm64.h"
24 
25 using namespace lldb;
26 using namespace lldb_private;
27 
28 bool RegisterContextPOSIX_arm64::IsGPR(unsigned reg) {
29   if (m_register_info_up->GetRegisterSetFromRegisterIndex(reg) ==
30       RegisterInfoPOSIX_arm64::GPRegSet)
31     return true;
32   return false;
33 }
34 
35 bool RegisterContextPOSIX_arm64::IsFPR(unsigned reg) {
36   if (m_register_info_up->GetRegisterSetFromRegisterIndex(reg) ==
37       RegisterInfoPOSIX_arm64::FPRegSet)
38     return true;
39   return false;
40 }
41 
42 bool RegisterContextPOSIX_arm64::IsSVE(unsigned reg) const {
43   return m_register_info_up->IsSVEReg(reg);
44 }
45 
46 RegisterContextPOSIX_arm64::RegisterContextPOSIX_arm64(
47     lldb_private::Thread &thread,
48     std::unique_ptr<RegisterInfoPOSIX_arm64> register_info)
49     : lldb_private::RegisterContext(thread, 0),
50       m_register_info_up(std::move(register_info)) {}
51 
52 RegisterContextPOSIX_arm64::~RegisterContextPOSIX_arm64() {}
53 
54 void RegisterContextPOSIX_arm64::Invalidate() {}
55 
56 void RegisterContextPOSIX_arm64::InvalidateAllRegisters() {}
57 
58 unsigned RegisterContextPOSIX_arm64::GetRegisterOffset(unsigned reg) {
59   return m_register_info_up->GetRegisterInfo()[reg].byte_offset;
60 }
61 
62 unsigned RegisterContextPOSIX_arm64::GetRegisterSize(unsigned reg) {
63   return m_register_info_up->GetRegisterInfo()[reg].byte_size;
64 }
65 
66 size_t RegisterContextPOSIX_arm64::GetRegisterCount() {
67   return m_register_info_up->GetRegisterCount();
68 }
69 
70 size_t RegisterContextPOSIX_arm64::GetGPRSize() {
71   return m_register_info_up->GetGPRSize();
72 }
73 
74 const lldb_private::RegisterInfo *
75 RegisterContextPOSIX_arm64::GetRegisterInfo() {
76   // Commonly, this method is overridden and g_register_infos is copied and
77   // specialized. So, use GetRegisterInfo() rather than g_register_infos in
78   // this scope.
79   return m_register_info_up->GetRegisterInfo();
80 }
81 
82 const lldb_private::RegisterInfo *
83 RegisterContextPOSIX_arm64::GetRegisterInfoAtIndex(size_t reg) {
84   if (reg < GetRegisterCount())
85     return &GetRegisterInfo()[reg];
86 
87   return nullptr;
88 }
89 
90 size_t RegisterContextPOSIX_arm64::GetRegisterSetCount() {
91   return m_register_info_up->GetRegisterSetCount();
92 }
93 
94 const lldb_private::RegisterSet *
95 RegisterContextPOSIX_arm64::GetRegisterSet(size_t set) {
96   return m_register_info_up->GetRegisterSet(set);
97 }
98 
99 const char *RegisterContextPOSIX_arm64::GetRegisterName(unsigned reg) {
100   if (reg < GetRegisterCount())
101     return GetRegisterInfo()[reg].name;
102   return nullptr;
103 }
104