1 //===-- PlatformRemoteAppleBridge.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 <string>
10 #include <vector>
11 
12 #include "PlatformRemoteAppleBridge.h"
13 
14 #include "lldb/Breakpoint/BreakpointLocation.h"
15 #include "lldb/Core/Module.h"
16 #include "lldb/Core/ModuleList.h"
17 #include "lldb/Core/ModuleSpec.h"
18 #include "lldb/Core/PluginManager.h"
19 #include "lldb/Host/Host.h"
20 #include "lldb/Target/Process.h"
21 #include "lldb/Target/Target.h"
22 #include "lldb/Utility/ArchSpec.h"
23 #include "lldb/Utility/FileSpec.h"
24 #include "lldb/Utility/Log.h"
25 #include "lldb/Utility/StreamString.h"
26 
27 using namespace lldb;
28 using namespace lldb_private;
29 
30 /// Default Constructor
31 PlatformRemoteAppleBridge::PlatformRemoteAppleBridge()
32     : PlatformRemoteDarwinDevice () {}
33 
34 // Static Variables
35 static uint32_t g_initialize_count = 0;
36 
37 // Static Functions
38 void PlatformRemoteAppleBridge::Initialize() {
39   PlatformDarwin::Initialize();
40 
41   if (g_initialize_count++ == 0) {
42     PluginManager::RegisterPlugin(PlatformRemoteAppleBridge::GetPluginNameStatic(),
43                                   PlatformRemoteAppleBridge::GetDescriptionStatic(),
44                                   PlatformRemoteAppleBridge::CreateInstance);
45   }
46 }
47 
48 void PlatformRemoteAppleBridge::Terminate() {
49   if (g_initialize_count > 0) {
50     if (--g_initialize_count == 0) {
51       PluginManager::UnregisterPlugin(PlatformRemoteAppleBridge::CreateInstance);
52     }
53   }
54 
55   PlatformDarwin::Terminate();
56 }
57 
58 PlatformSP PlatformRemoteAppleBridge::CreateInstance(bool force,
59                                                  const ArchSpec *arch) {
60   Log *log(GetLogIfAllCategoriesSet(LIBLLDB_LOG_PLATFORM));
61   if (log) {
62     const char *arch_name;
63     if (arch && arch->GetArchitectureName())
64       arch_name = arch->GetArchitectureName();
65     else
66       arch_name = "<null>";
67 
68     const char *triple_cstr =
69         arch ? arch->GetTriple().getTriple().c_str() : "<null>";
70 
71     LLDB_LOGF(log, "PlatformRemoteAppleBridge::%s(force=%s, arch={%s,%s})",
72               __FUNCTION__, force ? "true" : "false", arch_name, triple_cstr);
73   }
74 
75   bool create = force;
76   if (!create && arch && arch->IsValid()) {
77     switch (arch->GetMachine()) {
78     case llvm::Triple::aarch64: {
79       const llvm::Triple &triple = arch->GetTriple();
80       llvm::Triple::VendorType vendor = triple.getVendor();
81       switch (vendor) {
82       case llvm::Triple::Apple:
83         create = true;
84         break;
85 
86 #if defined(__APPLE__)
87       // Only accept "unknown" for the vendor if the host is Apple and
88       // it "unknown" wasn't specified (it was just returned because it
89       // was NOT specified)
90       case llvm::Triple::UnknownVendor:
91         create = !arch->TripleVendorWasSpecified();
92         break;
93 
94 #endif
95       default:
96         break;
97       }
98       if (create) {
99 // Suppress warning "switch statement contains 'default' but no 'case' labels".
100 #ifdef _MSC_VER
101 #pragma warning(push)
102 #pragma warning(disable : 4065)
103 #endif
104         switch (triple.getOS()) {
105           // NEED_BRIDGEOS_TRIPLE case llvm::Triple::BridgeOS:
106           //  break;
107 
108         default:
109           create = false;
110           break;
111         }
112 #ifdef _MSC_VER
113 #pragma warning(pop)
114 #endif
115       }
116     } break;
117     default:
118       break;
119     }
120   }
121 
122   if (create) {
123     LLDB_LOGF(log, "PlatformRemoteAppleBridge::%s() creating platform",
124               __FUNCTION__);
125 
126     return lldb::PlatformSP(new PlatformRemoteAppleBridge());
127   }
128 
129   LLDB_LOGF(log,
130             "PlatformRemoteAppleBridge::%s() aborting creation of platform",
131             __FUNCTION__);
132 
133   return lldb::PlatformSP();
134 }
135 
136 llvm::StringRef PlatformRemoteAppleBridge::GetDescriptionStatic() {
137   return "Remote BridgeOS platform plug-in.";
138 }
139 
140 bool PlatformRemoteAppleBridge::GetSupportedArchitectureAtIndex(uint32_t idx,
141                                                             ArchSpec &arch) {
142   ArchSpec system_arch(GetSystemArchitecture());
143 
144   const ArchSpec::Core system_core = system_arch.GetCore();
145   switch (system_core) {
146   default:
147     switch (idx) {
148     case 0:
149       arch.SetTriple("arm64-apple-bridgeos");
150       return true;
151     default:
152       break;
153     }
154     break;
155 
156   case ArchSpec::eCore_arm_arm64:
157     switch (idx) {
158     case 0:
159       arch.SetTriple("arm64-apple-bridgeos");
160       return true;
161     default:
162       break;
163     }
164     break;
165   }
166   arch.Clear();
167   return false;
168 }
169 
170 llvm::StringRef PlatformRemoteAppleBridge::GetDeviceSupportDirectoryName() {
171   return "BridgeOS DeviceSupport";
172 }
173 
174 llvm::StringRef PlatformRemoteAppleBridge::GetPlatformName() {
175   return "BridgeOS.platform";
176 }
177