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