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
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
|
//===-- SymbolVendorMacOSX.cpp ----------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "SymbolVendorMacOSX.h"
#include <libxml/parser.h>
#include <libxml/tree.h>
#include <string.h>
#include <AvailabilityMacros.h>
#include "lldb/Core/Module.h"
#include "lldb/Core/ModuleSpec.h"
#include "lldb/Core/PluginManager.h"
#include "lldb/Core/Section.h"
#include "lldb/Core/StreamString.h"
#include "lldb/Core/Timer.h"
#include "lldb/Host/Host.h"
#include "lldb/Host/Symbols.h"
#include "lldb/Symbol/ObjectFile.h"
using namespace lldb;
using namespace lldb_private;
//----------------------------------------------------------------------
// SymbolVendorMacOSX constructor
//----------------------------------------------------------------------
SymbolVendorMacOSX::SymbolVendorMacOSX(const lldb::ModuleSP &module_sp) :
SymbolVendor (module_sp)
{
}
//----------------------------------------------------------------------
// Destructor
//----------------------------------------------------------------------
SymbolVendorMacOSX::~SymbolVendorMacOSX()
{
}
static bool
UUIDsMatch(Module *module, ObjectFile *ofile, lldb_private::Stream *feedback_strm)
{
if (module && ofile)
{
// Make sure the UUIDs match
lldb_private::UUID dsym_uuid;
if (!ofile->GetUUID(&dsym_uuid))
{
if (feedback_strm)
{
feedback_strm->PutCString("warning: failed to get the uuid for object file: '");
ofile->GetFileSpec().Dump(feedback_strm);
feedback_strm->PutCString("\n");
}
return false;
}
if (dsym_uuid == module->GetUUID())
return true;
// Emit some warning messages since the UUIDs do not match!
if (feedback_strm)
{
feedback_strm->PutCString("warning: UUID mismatch detected between modules:\n ");
module->GetUUID().Dump(feedback_strm);
feedback_strm->PutChar(' ');
module->GetFileSpec().Dump(feedback_strm);
feedback_strm->PutCString("\n ");
dsym_uuid.Dump(feedback_strm);
feedback_strm->PutChar(' ');
ofile->GetFileSpec().Dump(feedback_strm);
feedback_strm->EOL();
}
}
return false;
}
static void
ReplaceDSYMSectionsWithExecutableSections (ObjectFile *exec_objfile, ObjectFile *dsym_objfile)
{
// We need both the executable and the dSYM to live off of the
// same section lists. So we take all of the sections from the
// executable, and replace them in the dSYM. This allows section
// offset addresses that come from the dSYM to automatically
// get updated as images (shared libraries) get loaded and
// unloaded.
SectionList *exec_section_list = exec_objfile->GetSectionList();
SectionList *dsym_section_list = dsym_objfile->GetSectionList();
if (exec_section_list && dsym_section_list)
{
const uint32_t num_exec_sections = dsym_section_list->GetSize();
uint32_t exec_sect_idx;
for (exec_sect_idx = 0; exec_sect_idx < num_exec_sections; ++exec_sect_idx)
{
SectionSP exec_sect_sp(exec_section_list->GetSectionAtIndex(exec_sect_idx));
if (exec_sect_sp.get())
{
// Try and replace any sections that exist in both the executable
// and in the dSYM with those from the executable. If we fail to
// replace the one in the dSYM, then add the executable section to
// the dSYM.
if (dsym_section_list->ReplaceSection(exec_sect_sp->GetID(), exec_sect_sp, 0) == false)
dsym_section_list->AddSection(exec_sect_sp);
}
}
dsym_section_list->Finalize(); // Now that we're done adding sections, finalize to build fast-lookup caches
}
}
void
SymbolVendorMacOSX::Initialize()
{
PluginManager::RegisterPlugin (GetPluginNameStatic(),
GetPluginDescriptionStatic(),
CreateInstance);
}
void
SymbolVendorMacOSX::Terminate()
{
PluginManager::UnregisterPlugin (CreateInstance);
}
const char *
SymbolVendorMacOSX::GetPluginNameStatic()
{
return "symbol-vendor.macosx";
}
const char *
SymbolVendorMacOSX::GetPluginDescriptionStatic()
{
return "Symbol vendor for MacOSX that looks for dSYM files that match executables.";
}
//----------------------------------------------------------------------
// CreateInstance
//
// Platforms can register a callback to use when creating symbol
// vendors to allow for complex debug information file setups, and to
// also allow for finding separate debug information files.
//----------------------------------------------------------------------
SymbolVendor*
SymbolVendorMacOSX::CreateInstance (const lldb::ModuleSP &module_sp, lldb_private::Stream *feedback_strm)
{
if (!module_sp)
return NULL;
Timer scoped_timer (__PRETTY_FUNCTION__,
"SymbolVendorMacOSX::CreateInstance (module = %s)",
module_sp->GetFileSpec().GetPath().c_str());
SymbolVendorMacOSX* symbol_vendor = new SymbolVendorMacOSX(module_sp);
if (symbol_vendor)
{
char path[PATH_MAX];
path[0] = '\0';
// Try and locate the dSYM file on Mac OS X
ObjectFile * obj_file = module_sp->GetObjectFile();
if (obj_file)
{
Timer scoped_timer2 ("SymbolVendorMacOSX::CreateInstance () locate dSYM",
"SymbolVendorMacOSX::CreateInstance (module = %s) locate dSYM",
module_sp->GetFileSpec().GetPath().c_str());
// First check to see if the module has a symbol file in mind already.
// If it does, then we MUST use that.
FileSpec dsym_fspec (module_sp->GetSymbolFileFileSpec());
ObjectFileSP dsym_objfile_sp;
if (!dsym_fspec)
{
// No symbol file was specified in the module, lets try and find
// one ourselves.
FileSpec file_spec = obj_file->GetFileSpec();
if (!file_spec)
file_spec = module_sp->GetFileSpec();
ModuleSpec module_spec(file_spec, module_sp->GetArchitecture());
module_spec.GetUUID() = module_sp->GetUUID();
dsym_fspec = Symbols::LocateExecutableSymbolFile (module_spec);
if (module_spec.GetSourceMappingList().GetSize())
module_sp->GetSourceMappingList().Append (module_spec.GetSourceMappingList (), true);
}
if (dsym_fspec)
{
DataBufferSP dsym_file_data_sp;
lldb::offset_t dsym_file_data_offset = 0;
dsym_objfile_sp = ObjectFile::FindPlugin(module_sp, &dsym_fspec, 0, dsym_fspec.GetByteSize(), dsym_file_data_sp, dsym_file_data_offset);
if (UUIDsMatch(module_sp.get(), dsym_objfile_sp.get(), feedback_strm))
{
char dsym_path[PATH_MAX];
if (module_sp->GetSourceMappingList().IsEmpty() && dsym_fspec.GetPath(dsym_path, sizeof(dsym_path)))
{
lldb_private::UUID dsym_uuid;
if (dsym_objfile_sp->GetUUID(&dsym_uuid))
{
std::string uuid_str = dsym_uuid.GetAsString ();
if (!uuid_str.empty())
{
char *resources = strstr (dsym_path, "/Contents/Resources/");
if (resources)
{
char dsym_uuid_plist_path[PATH_MAX];
resources[strlen("/Contents/Resources/")] = '\0';
snprintf(dsym_uuid_plist_path, sizeof(dsym_uuid_plist_path), "%s%s.plist", dsym_path, uuid_str.c_str());
FileSpec dsym_uuid_plist_spec(dsym_uuid_plist_path, false);
if (dsym_uuid_plist_spec.Exists())
{
xmlDoc *doc = ::xmlReadFile (dsym_uuid_plist_path, NULL, 0);
if (doc)
{
char DBGBuildSourcePath[PATH_MAX];
char DBGSourcePath[PATH_MAX];
DBGBuildSourcePath[0] = '\0';
DBGSourcePath[0] = '\0';
for (xmlNode *node = doc->children; node; node = node ? node->next : NULL)
{
if (node->type == XML_ELEMENT_NODE)
{
if (node->name && strcmp((const char*)node->name, "plist") == 0)
{
xmlNode *dict_node = node->children;
while (dict_node && dict_node->type != XML_ELEMENT_NODE)
dict_node = dict_node->next;
if (dict_node && dict_node->name && strcmp((const char *)dict_node->name, "dict") == 0)
{
for (xmlNode *key_node = dict_node->children; key_node; key_node = key_node->next)
{
if (key_node && key_node->type == XML_ELEMENT_NODE && key_node->name)
{
if (strcmp((const char *)key_node->name, "key") == 0)
{
const char *key_name = (const char *)::xmlNodeGetContent(key_node);
if (strcmp(key_name, "DBGBuildSourcePath") == 0)
{
xmlNode *value_node = key_node->next;
while (value_node && value_node->type != XML_ELEMENT_NODE)
value_node = value_node->next;
if (value_node && value_node->name)
{
if (strcmp((const char *)value_node->name, "string") == 0)
{
const char *node_content = (const char *)::xmlNodeGetContent(value_node);
if (node_content)
{
strncpy(DBGBuildSourcePath, node_content, sizeof(DBGBuildSourcePath));
}
}
key_node = value_node;
}
}
else if (strcmp(key_name, "DBGSourcePath") == 0)
{
xmlNode *value_node = key_node->next;
while (value_node && value_node->type != XML_ELEMENT_NODE)
value_node = value_node->next;
if (value_node && value_node->name)
{
if (strcmp((const char *)value_node->name, "string") == 0)
{
const char *node_content = (const char *)::xmlNodeGetContent(value_node);
if (node_content)
{
FileSpec resolved_source_path(node_content, true);
resolved_source_path.GetPath(DBGSourcePath, sizeof(DBGSourcePath));
}
}
key_node = value_node;
}
}
}
}
}
}
}
}
}
::xmlFreeDoc (doc);
if (DBGBuildSourcePath[0] && DBGSourcePath[0])
{
module_sp->GetSourceMappingList().Append (ConstString(DBGBuildSourcePath), ConstString(DBGSourcePath), true);
}
}
}
}
}
}
}
ReplaceDSYMSectionsWithExecutableSections (obj_file, dsym_objfile_sp.get());
symbol_vendor->AddSymbolFileRepresentation(dsym_objfile_sp);
return symbol_vendor;
}
}
// Just create our symbol vendor using the current objfile as this is either
// an executable with no dSYM (that we could locate), an executable with
// a dSYM that has a UUID that doesn't match.
symbol_vendor->AddSymbolFileRepresentation(obj_file->shared_from_this());
}
}
return symbol_vendor;
}
//------------------------------------------------------------------
// PluginInterface protocol
//------------------------------------------------------------------
const char *
SymbolVendorMacOSX::GetPluginName()
{
return "SymbolVendorMacOSX";
}
const char *
SymbolVendorMacOSX::GetShortPluginName()
{
return GetPluginNameStatic();
}
uint32_t
SymbolVendorMacOSX::GetPluginVersion()
{
return 1;
}
|
