1 //===-- SymbolFile.cpp ------------------------------------------*- C++ -*-===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #include "lldb/Symbol/SymbolFile.h"
11 
12 #include "lldb/lldb-private.h"
13 #include "lldb/Core/Log.h"
14 #include "lldb/Core/Module.h"
15 #include "lldb/Core/PluginManager.h"
16 #include "lldb/Core/StreamString.h"
17 #include "lldb/Symbol/ObjectFile.h"
18 
19 using namespace lldb_private;
20 
21 SymbolFile*
FindPlugin(ObjectFile * obj_file)22 SymbolFile::FindPlugin (ObjectFile* obj_file)
23 {
24     std::unique_ptr<SymbolFile> best_symfile_ap;
25     if (obj_file != NULL)
26     {
27 
28         // We need to test the abilities of this section list. So create what it would
29         // be with this new obj_file.
30         lldb::ModuleSP module_sp(obj_file->GetModule());
31         if (module_sp)
32         {
33             // Default to the main module section list.
34             ObjectFile *module_obj_file = module_sp->GetObjectFile();
35             if (module_obj_file != obj_file)
36             {
37                 // Make sure the main object file's sections are created
38                 module_obj_file->GetSectionList();
39                 obj_file->CreateSections (*module_sp->GetUnifiedSectionList());
40             }
41         }
42 
43         // TODO: Load any plug-ins in the appropriate plug-in search paths and
44         // iterate over all of them to find the best one for the job.
45 
46         uint32_t best_symfile_abilities = 0;
47 
48         SymbolFileCreateInstance create_callback;
49         for (uint32_t idx = 0; (create_callback = PluginManager::GetSymbolFileCreateCallbackAtIndex(idx)) != NULL; ++idx)
50         {
51             std::unique_ptr<SymbolFile> curr_symfile_ap(create_callback(obj_file));
52 
53             if (curr_symfile_ap.get())
54             {
55                 const uint32_t sym_file_abilities = curr_symfile_ap->GetAbilities();
56                 if (sym_file_abilities > best_symfile_abilities)
57                 {
58                     best_symfile_abilities = sym_file_abilities;
59                     best_symfile_ap.reset (curr_symfile_ap.release());
60                     // If any symbol file parser has all of the abilities, then
61                     // we should just stop looking.
62                     if ((kAllAbilities & sym_file_abilities) == kAllAbilities)
63                         break;
64                 }
65             }
66         }
67         if (best_symfile_ap.get())
68         {
69             // Let the winning symbol file parser initialize itself more
70             // completely now that it has been chosen
71             best_symfile_ap->InitializeObject();
72         }
73     }
74     return best_symfile_ap.release();
75 }
76 
77 TypeList *
GetTypeList()78 SymbolFile::GetTypeList ()
79 {
80     if (m_obj_file)
81         return m_obj_file->GetModule()->GetTypeList();
82     return NULL;
83 }
84 
85 lldb_private::ClangASTContext &
GetClangASTContext()86 SymbolFile::GetClangASTContext ()
87 {
88     return m_obj_file->GetModule()->GetClangASTContext();
89 }
90