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 <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_arm64.h"
24 
25 using namespace lldb;
26 using namespace lldb_private;
27 
IsGPR(unsigned reg)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 
IsFPR(unsigned reg)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 
IsSVE(unsigned reg) const42 bool RegisterContextPOSIX_arm64::IsSVE(unsigned reg) const {
43   return m_register_info_up->IsSVEReg(reg);
44 }
45 
IsPAuth(unsigned reg) const46 bool RegisterContextPOSIX_arm64::IsPAuth(unsigned reg) const {
47   return m_register_info_up->IsPAuthReg(reg);
48 }
49 
RegisterContextPOSIX_arm64(lldb_private::Thread & thread,std::unique_ptr<RegisterInfoPOSIX_arm64> register_info)50 RegisterContextPOSIX_arm64::RegisterContextPOSIX_arm64(
51     lldb_private::Thread &thread,
52     std::unique_ptr<RegisterInfoPOSIX_arm64> register_info)
53     : lldb_private::RegisterContext(thread, 0),
54       m_register_info_up(std::move(register_info)) {}
55 
56 RegisterContextPOSIX_arm64::~RegisterContextPOSIX_arm64() = default;
57 
Invalidate()58 void RegisterContextPOSIX_arm64::Invalidate() {}
59 
InvalidateAllRegisters()60 void RegisterContextPOSIX_arm64::InvalidateAllRegisters() {}
61 
GetRegisterOffset(unsigned reg)62 unsigned RegisterContextPOSIX_arm64::GetRegisterOffset(unsigned reg) {
63   return m_register_info_up->GetRegisterInfo()[reg].byte_offset;
64 }
65 
GetRegisterSize(unsigned reg)66 unsigned RegisterContextPOSIX_arm64::GetRegisterSize(unsigned reg) {
67   return m_register_info_up->GetRegisterInfo()[reg].byte_size;
68 }
69 
GetRegisterCount()70 size_t RegisterContextPOSIX_arm64::GetRegisterCount() {
71   return m_register_info_up->GetRegisterCount();
72 }
73 
GetGPRSize()74 size_t RegisterContextPOSIX_arm64::GetGPRSize() {
75   return m_register_info_up->GetGPRSize();
76 }
77 
78 const lldb_private::RegisterInfo *
GetRegisterInfo()79 RegisterContextPOSIX_arm64::GetRegisterInfo() {
80   // Commonly, this method is overridden and g_register_infos is copied and
81   // specialized. So, use GetRegisterInfo() rather than g_register_infos in
82   // this scope.
83   return m_register_info_up->GetRegisterInfo();
84 }
85 
86 const lldb_private::RegisterInfo *
GetRegisterInfoAtIndex(size_t reg)87 RegisterContextPOSIX_arm64::GetRegisterInfoAtIndex(size_t reg) {
88   if (reg < GetRegisterCount())
89     return &GetRegisterInfo()[reg];
90 
91   return nullptr;
92 }
93 
GetRegisterSetCount()94 size_t RegisterContextPOSIX_arm64::GetRegisterSetCount() {
95   return m_register_info_up->GetRegisterSetCount();
96 }
97 
98 const lldb_private::RegisterSet *
GetRegisterSet(size_t set)99 RegisterContextPOSIX_arm64::GetRegisterSet(size_t set) {
100   return m_register_info_up->GetRegisterSet(set);
101 }
102 
GetRegisterName(unsigned reg)103 const char *RegisterContextPOSIX_arm64::GetRegisterName(unsigned reg) {
104   if (reg < GetRegisterCount())
105     return GetRegisterInfo()[reg].name;
106   return nullptr;
107 }
108