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-rw-r--r--lldb/source/Plugins/ObjectFile/Mach-O/ObjectFileMachO.cpp5
-rw-r--r--lldb/source/Plugins/ObjectFile/Mach-O/ObjectFileMachO.h7
-rw-r--r--lldb/source/Symbol/Symbol.cpp93
3 files changed, 77 insertions, 28 deletions
diff --git a/lldb/source/Plugins/ObjectFile/Mach-O/ObjectFileMachO.cpp b/lldb/source/Plugins/ObjectFile/Mach-O/ObjectFileMachO.cpp
index 4f491ce67b0..6866a068ef7 100644
--- a/lldb/source/Plugins/ObjectFile/Mach-O/ObjectFileMachO.cpp
+++ b/lldb/source/Plugins/ObjectFile/Mach-O/ObjectFileMachO.cpp
@@ -1838,6 +1838,11 @@ ObjectFileMachO::ParseSymtab ()
// Strip the path if there is @rpath, @executanble, etc so we just use the basename
if (path[0] == '@')
file_spec.GetDirectory().Clear();
+
+ if (lc.cmd == LC_REEXPORT_DYLIB)
+ {
+ m_reexported_dylibs.AppendIfUnique(file_spec);
+ }
dylib_files.Append(file_spec);
}
diff --git a/lldb/source/Plugins/ObjectFile/Mach-O/ObjectFileMachO.h b/lldb/source/Plugins/ObjectFile/Mach-O/ObjectFileMachO.h
index c565ac63e4e..dff0b21be80 100644
--- a/lldb/source/Plugins/ObjectFile/Mach-O/ObjectFileMachO.h
+++ b/lldb/source/Plugins/ObjectFile/Mach-O/ObjectFileMachO.h
@@ -13,6 +13,7 @@
#include "lldb/Utility/SafeMachO.h"
#include "lldb/Core/Address.h"
+#include "lldb/Core/FileSpecList.h"
#include "lldb/Core/RangeMap.h"
#include "lldb/Host/FileSpec.h"
#include "lldb/Host/Mutex.h"
@@ -127,6 +128,11 @@ public:
virtual uint32_t
GetDependentModules (lldb_private::FileSpecList& files);
+ virtual lldb_private::FileSpecList
+ GetReExportedLibraries ()
+ {
+ return m_reexported_dylibs;
+ }
//------------------------------------------------------------------
// PluginInterface protocol
//------------------------------------------------------------------
@@ -208,6 +214,7 @@ protected:
lldb_private::Address m_entry_point_address;
FileRangeArray m_thread_context_offsets;
bool m_thread_context_offsets_valid;
+ lldb_private::FileSpecList m_reexported_dylibs;
size_t
ParseSymtab ();
diff --git a/lldb/source/Symbol/Symbol.cpp b/lldb/source/Symbol/Symbol.cpp
index 9bda7b20ecb..98b5a320580 100644
--- a/lldb/source/Symbol/Symbol.cpp
+++ b/lldb/source/Symbol/Symbol.cpp
@@ -536,47 +536,84 @@ Symbol::GetByteSize () const
return m_addr_range.GetByteSize();
}
+
Symbol *
-Symbol::ResolveReExportedSymbol (Target &target)
+Symbol::ResolveReExportedSymbolInModuleSpec (Target &target,
+ ConstString &reexport_name,
+ ModuleSpec &module_spec,
+ ModuleList &seen_modules)
{
- ConstString reexport_name (GetReExportedSymbolName());
- if (reexport_name)
+ ModuleSP module_sp;
+ if (module_spec.GetFileSpec())
{
- ModuleSpec module_spec;
- ModuleSP module_sp;
- module_spec.GetFileSpec() = GetReExportedSymbolSharedLibrary();
- if (module_spec.GetFileSpec())
+ // Try searching for the module file spec first using the full path
+ module_sp = target.GetImages().FindFirstModule(module_spec);
+ if (!module_sp)
{
- // Try searching for the module file spec first using the full path
+ // Next try and find the module by basename in case environment
+ // variables or other runtime trickery causes shared libraries
+ // to be loaded from alternate paths
+ module_spec.GetFileSpec().GetDirectory().Clear();
module_sp = target.GetImages().FindFirstModule(module_spec);
- if (!module_sp)
- {
- // Next try and find the module by basename in case environment
- // variables or other runtime trickery causes shared libraries
- // to be loaded from alternate paths
- module_spec.GetFileSpec().GetDirectory().Clear();
- module_sp = target.GetImages().FindFirstModule(module_spec);
- }
}
+ }
+
+ if (module_sp)
+ {
+ // There should not be cycles in the reexport list, but we don't want to crash if there are so make sure
+ // we haven't seen this before:
+ if (!seen_modules.AppendIfNeeded(module_sp))
+ return nullptr;
- if (module_sp)
+ lldb_private::SymbolContextList sc_list;
+ module_sp->FindSymbolsWithNameAndType(reexport_name, eSymbolTypeAny, sc_list);
+ const size_t num_scs = sc_list.GetSize();
+ if (num_scs > 0)
{
- lldb_private::SymbolContextList sc_list;
- module_sp->FindSymbolsWithNameAndType(reexport_name, eSymbolTypeAny, sc_list);
- const size_t num_scs = sc_list.GetSize();
- if (num_scs > 0)
+ for (size_t i=0; i<num_scs; ++i)
{
- for (size_t i=0; i<num_scs; ++i)
+ lldb_private::SymbolContext sc;
+ if (sc_list.GetContextAtIndex(i, sc))
{
- lldb_private::SymbolContext sc;
- if (sc_list.GetContextAtIndex(i, sc))
- {
- if (sc.symbol->IsExternal())
- return sc.symbol;
- }
+ if (sc.symbol->IsExternal())
+ return sc.symbol;
}
}
}
+ // If we didn't find the symbol in this module, it may be because this module re-exports some
+ // whole other library. We have to search those as well:
+ seen_modules.Append(module_sp);
+
+ FileSpecList reexported_libraries = module_sp->GetObjectFile()->GetReExportedLibraries();
+ size_t num_reexported_libraries = reexported_libraries.GetSize();
+ for (size_t idx = 0; idx < num_reexported_libraries; idx++)
+ {
+ ModuleSpec reexported_module_spec;
+ reexported_module_spec.GetFileSpec() = reexported_libraries.GetFileSpecAtIndex(idx);
+ Symbol *result_symbol = ResolveReExportedSymbolInModuleSpec(target,
+ reexport_name,
+ reexported_module_spec,
+ seen_modules);
+ if (result_symbol)
+ return result_symbol;
+ }
+ }
+ return nullptr;
+}
+
+Symbol *
+Symbol::ResolveReExportedSymbol (Target &target)
+{
+ ConstString reexport_name (GetReExportedSymbolName());
+ if (reexport_name)
+ {
+ ModuleSpec module_spec;
+ ModuleList seen_modules;
+ module_spec.GetFileSpec() = GetReExportedSymbolSharedLibrary();
+ if (module_spec.GetFileSpec())
+ {
+ return ResolveReExportedSymbolInModuleSpec(target, reexport_name, module_spec, seen_modules);
+ }
}
return nullptr;
}
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