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