1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
| //===-- PlatformOpenBSD.cpp -------------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "PlatformOpenBSD.h"
#include "lldb/Host/Config.h"
#include <stdio.h>
#ifndef LLDB_DISABLE_POSIX
#include <sys/utsname.h>
#endif
#include "lldb/Core/Debugger.h"
#include "lldb/Core/PluginManager.h"
#include "lldb/Host/HostInfo.h"
#include "lldb/Target/Process.h"
#include "lldb/Target/Target.h"
#include "lldb/Utility/FileSpec.h"
#include "lldb/Utility/Log.h"
#include "lldb/Utility/State.h"
#include "lldb/Utility/Status.h"
#include "lldb/Utility/StreamString.h"
// Define these constants from OpenBSD mman.h for use when targeting remote
// openbsd systems even when host has different values.
#define MAP_PRIVATE 0x0002
#define MAP_ANON 0x1000
using namespace lldb;
using namespace lldb_private;
using namespace lldb_private::platform_openbsd;
static uint32_t g_initialize_count = 0;
PlatformSP PlatformOpenBSD::CreateInstance(bool force, const ArchSpec *arch) {
Log *log(GetLogIfAllCategoriesSet(LIBLLDB_LOG_PLATFORM));
LLDB_LOG(log, "force = {0}, arch=({1}, {2})", force,
arch ? arch->GetArchitectureName() : "<null>",
arch ? arch->GetTriple().getTriple() : "<null>");
bool create = force;
if (!create && arch && arch->IsValid()) {
const llvm::Triple &triple = arch->GetTriple();
switch (triple.getOS()) {
case llvm::Triple::OpenBSD:
create = true;
break;
#if defined(__OpenBSD__)
// Only accept "unknown" for the OS if the host is BSD and it "unknown"
// wasn't specified (it was just returned because it was NOT specified)
case llvm::Triple::OSType::UnknownOS:
create = !arch->TripleOSWasSpecified();
break;
#endif
default:
break;
}
}
LLDB_LOG(log, "create = {0}", create);
if (create) {
return PlatformSP(new PlatformOpenBSD(false));
}
return PlatformSP();
}
ConstString PlatformOpenBSD::GetPluginNameStatic(bool is_host) {
if (is_host) {
static ConstString g_host_name(Platform::GetHostPlatformName());
return g_host_name;
} else {
static ConstString g_remote_name("remote-openbsd");
return g_remote_name;
}
}
const char *PlatformOpenBSD::GetPluginDescriptionStatic(bool is_host) {
if (is_host)
return "Local OpenBSD user platform plug-in.";
else
return "Remote OpenBSD user platform plug-in.";
}
ConstString PlatformOpenBSD::GetPluginName() {
return GetPluginNameStatic(IsHost());
}
void PlatformOpenBSD::Initialize() {
Platform::Initialize();
if (g_initialize_count++ == 0) {
#if defined(__OpenBSD__)
PlatformSP default_platform_sp(new PlatformOpenBSD(true));
default_platform_sp->SetSystemArchitecture(HostInfo::GetArchitecture());
Platform::SetHostPlatform(default_platform_sp);
#endif
PluginManager::RegisterPlugin(
PlatformOpenBSD::GetPluginNameStatic(false),
PlatformOpenBSD::GetPluginDescriptionStatic(false),
PlatformOpenBSD::CreateInstance, nullptr);
}
}
void PlatformOpenBSD::Terminate() {
if (g_initialize_count > 0) {
if (--g_initialize_count == 0) {
PluginManager::UnregisterPlugin(PlatformOpenBSD::CreateInstance);
}
}
PlatformPOSIX::Terminate();
}
/// Default Constructor
PlatformOpenBSD::PlatformOpenBSD(bool is_host)
: PlatformPOSIX(is_host) // This is the local host platform
{}
PlatformOpenBSD::~PlatformOpenBSD() = default;
bool PlatformOpenBSD::GetSupportedArchitectureAtIndex(uint32_t idx,
ArchSpec &arch) {
if (IsHost()) {
ArchSpec hostArch = HostInfo::GetArchitecture(HostInfo::eArchKindDefault);
if (hostArch.GetTriple().isOSOpenBSD()) {
if (idx == 0) {
arch = hostArch;
return arch.IsValid();
}
}
} else {
if (m_remote_platform_sp)
return m_remote_platform_sp->GetSupportedArchitectureAtIndex(idx, arch);
llvm::Triple triple;
// Set the OS to OpenBSD
triple.setOS(llvm::Triple::OpenBSD);
// Set the architecture
switch (idx) {
case 0:
triple.setArchName("x86_64");
break;
case 1:
triple.setArchName("i386");
break;
case 2:
triple.setArchName("aarch64");
break;
case 3:
triple.setArchName("arm");
break;
default:
return false;
}
// Leave the vendor as "llvm::Triple:UnknownVendor" and don't specify the
// vendor by calling triple.SetVendorName("unknown") so that it is a
// "unspecified unknown". This means when someone calls
// triple.GetVendorName() it will return an empty string which indicates
// that the vendor can be set when two architectures are merged
// Now set the triple into "arch" and return true
arch.SetTriple(triple);
return true;
}
return false;
}
void PlatformOpenBSD::GetStatus(Stream &strm) {
Platform::GetStatus(strm);
#ifndef LLDB_DISABLE_POSIX
// Display local kernel information only when we are running in host mode.
// Otherwise, we would end up printing non-OpenBSD information (when running
// on Mac OS for example).
if (IsHost()) {
struct utsname un;
if (uname(&un))
return;
strm.Printf(" Kernel: %s\n", un.sysname);
strm.Printf(" Release: %s\n", un.release);
strm.Printf(" Version: %s\n", un.version);
}
#endif
}
// OpenBSD processes cannot yet be launched by spawning and attaching.
bool PlatformOpenBSD::CanDebugProcess() {
return false;
}
void PlatformOpenBSD::CalculateTrapHandlerSymbolNames() {
m_trap_handlers.push_back(ConstString("_sigtramp"));
}
MmapArgList PlatformOpenBSD::GetMmapArgumentList(const ArchSpec &arch,
addr_t addr, addr_t length,
unsigned prot, unsigned flags,
addr_t fd, addr_t offset) {
uint64_t flags_platform = 0;
if (flags & eMmapFlagsPrivate)
flags_platform |= MAP_PRIVATE;
if (flags & eMmapFlagsAnon)
flags_platform |= MAP_ANON;
MmapArgList args({addr, length, prot, flags_platform, fd, offset});
return args;
}
|