shylie/llvm-project
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
llvm-project/lldb/source/Core/ModuleList.cpp
Greg Clayton 644247c1dc Added "target variable" command that allows introspection of global 
variables prior to running your binary. Zero filled sections now get
section data correctly filled with zeroes when Target::ReadMemory
reads from the object file section data.

Added new option groups and option values for file lists. I still need
to hook up all of the options to "target variable" to allow more complete
introspection by file and shlib.

Added the ability for ValueObjectVariable objects to be created with
only the target as the execution context. This allows them to be read
from the object files through Target::ReadMemory(...). 

Added a "virtual Module * GetModule()" function to the ValueObject
class. By default it will look to the parent variable object and
return its module. The module is needed when we have global variables
that have file addresses (virtual addresses that are specific to
module object files) and in turn allows global variables to be displayed
prior to running.

Removed all of the unused proxy object support that bit rotted in 
lldb_private::Value.

Replaced a lot of places that used "FileSpec::Compare (lhs, rhs) == 0" code
with the more efficient "FileSpec::Equal (lhs, rhs)".

Improved logging in GDB remote plug-in.

llvm-svn: 134579
2011-07-07 01:59:51 +00:00

855 lines
26 KiB
C++
Raw Blame History

//===-- ModuleList.cpp ------------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "lldb/Core/ModuleList.h"
// C Includes
// C++ Includes
// Other libraries and framework includes
// Project includes
#include "lldb/Core/Log.h"
#include "lldb/Core/Module.h"
#include "lldb/Host/Symbols.h"
#include "lldb/Symbol/ObjectFile.h"
#include "lldb/Symbol/VariableList.h"
using namespace lldb;
using namespace lldb_private;
//----------------------------------------------------------------------
// ModuleList constructor
//----------------------------------------------------------------------
ModuleList::ModuleList() :
m_modules(),
m_modules_mutex (Mutex::eMutexTypeRecursive)
{
}
//----------------------------------------------------------------------
// Copy constructor
//----------------------------------------------------------------------
ModuleList::ModuleList(const ModuleList& rhs) :
m_modules(rhs.m_modules)
{
}
//----------------------------------------------------------------------
// Assignment operator
//----------------------------------------------------------------------
const ModuleList&
ModuleList::operator= (const ModuleList& rhs)
{
if (this != &rhs)
{
Mutex::Locker locker(m_modules_mutex);
m_modules = rhs.m_modules;
}
return *this;
}
//----------------------------------------------------------------------
// Destructor
//----------------------------------------------------------------------
ModuleList::~ModuleList()
{
}
void
ModuleList::Append (ModuleSP &module_sp)
{
if (module_sp)
{
Mutex::Locker locker(m_modules_mutex);
m_modules.push_back(module_sp);
}
}
bool
ModuleList::AppendIfNeeded (ModuleSP &module_sp)
{
if (module_sp)
{
Mutex::Locker locker(m_modules_mutex);
collection::iterator pos, end = m_modules.end();
for (pos = m_modules.begin(); pos != end; ++pos)
{
if (pos->get() == module_sp.get())
return false; // Already in the list
}
// Only push module_sp on the list if it wasn't already in there.
m_modules.push_back(module_sp);
return true;
}
return false;
}
bool
ModuleList::Remove (ModuleSP &module_sp)
{
if (module_sp)
{
Mutex::Locker locker(m_modules_mutex);
collection::iterator pos, end = m_modules.end();
for (pos = m_modules.begin(); pos != end; ++pos)
{
if (pos->get() == module_sp.get())
{
m_modules.erase (pos);
return true;
}
}
}
return false;
}
size_t
ModuleList::Remove (ModuleList &module_list)
{
Mutex::Locker locker(m_modules_mutex);
size_t num_removed = 0;
collection::iterator pos, end = module_list.m_modules.end();
for (pos = module_list.m_modules.begin(); pos != end; ++pos)
{
if (Remove (*pos))
++num_removed;
}
return num_removed;
}
void
ModuleList::Clear()
{
Mutex::Locker locker(m_modules_mutex);
m_modules.clear();
}
Module*
ModuleList::GetModulePointerAtIndex (uint32_t idx) const
{
Mutex::Locker locker(m_modules_mutex);
if (idx < m_modules.size())
return m_modules[idx].get();
return NULL;
}
ModuleSP
ModuleList::GetModuleAtIndex(uint32_t idx)
{
Mutex::Locker locker(m_modules_mutex);
ModuleSP module_sp;
if (idx < m_modules.size())
module_sp = m_modules[idx];
return module_sp;
}
uint32_t
ModuleList::FindFunctions (const ConstString &name,
uint32_t name_type_mask,
bool include_symbols,
bool append,
SymbolContextList &sc_list)
{
if (!append)
sc_list.Clear();
Mutex::Locker locker(m_modules_mutex);
collection::const_iterator pos, end = m_modules.end();
for (pos = m_modules.begin(); pos != end; ++pos)
{
(*pos)->FindFunctions (name, name_type_mask, include_symbols, true, sc_list);
}
return sc_list.GetSize();
}
uint32_t
ModuleList::FindCompileUnits (const FileSpec &path,
bool append,
SymbolContextList &sc_list)
{
if (!append)
sc_list.Clear();
Mutex::Locker locker(m_modules_mutex);
collection::const_iterator pos, end = m_modules.end();
for (pos = m_modules.begin(); pos != end; ++pos)
{
(*pos)->FindCompileUnits (path, true, sc_list);
}
return sc_list.GetSize();
}
uint32_t
ModuleList::FindGlobalVariables (const ConstString &name,
bool append,
uint32_t max_matches,
VariableList& variable_list)
{
size_t initial_size = variable_list.GetSize();
Mutex::Locker locker(m_modules_mutex);
collection::iterator pos, end = m_modules.end();
for (pos = m_modules.begin(); pos != end; ++pos)
{
(*pos)->FindGlobalVariables (name, append, max_matches, variable_list);
}
return variable_list.GetSize() - initial_size;
}
uint32_t
ModuleList::FindGlobalVariables (const RegularExpression& regex,
bool append,
uint32_t max_matches,
VariableList& variable_list)
{
size_t initial_size = variable_list.GetSize();
Mutex::Locker locker(m_modules_mutex);
collection::iterator pos, end = m_modules.end();
for (pos = m_modules.begin(); pos != end; ++pos)
{
(*pos)->FindGlobalVariables (regex, append, max_matches, variable_list);
}
return variable_list.GetSize() - initial_size;
}
size_t
ModuleList::FindSymbolsWithNameAndType (const ConstString &name,
SymbolType symbol_type,
SymbolContextList &sc_list)
{
Mutex::Locker locker(m_modules_mutex);
sc_list.Clear();
collection::iterator pos, end = m_modules.end();
for (pos = m_modules.begin(); pos != end; ++pos)
(*pos)->FindSymbolsWithNameAndType (name, symbol_type, sc_list);
return sc_list.GetSize();
}
class ModuleMatches
{
public:
//--------------------------------------------------------------
/// Construct with the user ID to look for.
//--------------------------------------------------------------
ModuleMatches (const FileSpec *file_spec_ptr,
const ArchSpec *arch_ptr,
const lldb_private::UUID *uuid_ptr,
const ConstString *object_name,
bool file_spec_is_platform) :
m_file_spec_ptr (file_spec_ptr),
m_arch_ptr (arch_ptr),
m_uuid_ptr (uuid_ptr),
m_object_name (object_name),
m_file_spec_compare_basename_only (false),
m_file_spec_is_platform (file_spec_is_platform)
{
if (file_spec_ptr)
m_file_spec_compare_basename_only = file_spec_ptr->GetDirectory();
}
//--------------------------------------------------------------
/// Unary predicate function object callback.
//--------------------------------------------------------------
bool
operator () (const ModuleSP& module_sp) const
{
if (m_file_spec_ptr)
{
if (m_file_spec_is_platform)
{
if (!FileSpec::Equal (*m_file_spec_ptr,
module_sp->GetPlatformFileSpec(),
m_file_spec_compare_basename_only))
return false;
}
else
{
if (!FileSpec::Equal (*m_file_spec_ptr,
module_sp->GetFileSpec(),
m_file_spec_compare_basename_only))
return false;
}
}
if (m_arch_ptr && m_arch_ptr->IsValid())
{
if (module_sp->GetArchitecture() != *m_arch_ptr)
return false;
}
if (m_uuid_ptr && m_uuid_ptr->IsValid())
{
if (module_sp->GetUUID() != *m_uuid_ptr)
return false;
}
if (m_object_name)
{
if (module_sp->GetObjectName() != *m_object_name)
return false;
}
return true;
}
private:
//--------------------------------------------------------------
// Member variables.
//--------------------------------------------------------------
const FileSpec * m_file_spec_ptr;
const ArchSpec * m_arch_ptr;
const lldb_private::UUID * m_uuid_ptr;
const ConstString * m_object_name;
bool m_file_spec_compare_basename_only;
bool m_file_spec_is_platform;
};
size_t
ModuleList::FindModules
(
const FileSpec *file_spec_ptr,
const ArchSpec *arch_ptr,
const lldb_private::UUID *uuid_ptr,
const ConstString *object_name,
ModuleList& matching_module_list
) const
{
size_t existing_matches = matching_module_list.GetSize();
ModuleMatches matcher (file_spec_ptr, arch_ptr, uuid_ptr, object_name, false);
Mutex::Locker locker(m_modules_mutex);
collection::const_iterator end = m_modules.end();
collection::const_iterator pos;
for (pos = std::find_if (m_modules.begin(), end, matcher);
pos != end;
pos = std::find_if (++pos, end, matcher))
{
ModuleSP module_sp(*pos);
matching_module_list.Append(module_sp);
}
return matching_module_list.GetSize() - existing_matches;
}
ModuleSP
ModuleList::FindModule (const Module *module_ptr)
{
ModuleSP module_sp;
// Scope for "locker"
{
Mutex::Locker locker(m_modules_mutex);
collection::const_iterator pos, end = m_modules.end();
for (pos = m_modules.begin(); pos != end; ++pos)
{
if ((*pos).get() == module_ptr)
{
module_sp = (*pos);
break;
}
}
}
return module_sp;
}
ModuleSP
ModuleList::FindModule (const UUID &uuid)
{
ModuleSP module_sp;
if (uuid.IsValid())
{
Mutex::Locker locker(m_modules_mutex);
collection::const_iterator pos, end = m_modules.end();
for (pos = m_modules.begin(); pos != end; ++pos)
{
if ((*pos)->GetUUID() == uuid)
{
module_sp = (*pos);
break;
}
}
}
return module_sp;
}
uint32_t
ModuleList::FindTypes (const SymbolContext& sc, const ConstString &name, bool append, uint32_t max_matches, TypeList& types)
{
Mutex::Locker locker(m_modules_mutex);
if (!append)
types.Clear();
uint32_t total_matches = 0;
collection::const_iterator pos, end = m_modules.end();
for (pos = m_modules.begin(); pos != end; ++pos)
{
if (sc.module_sp.get() == NULL || sc.module_sp.get() == (*pos).get())
total_matches += (*pos)->FindTypes (sc, name, true, max_matches, types);
if (total_matches >= max_matches)
break;
}
return total_matches;
}
ModuleSP
ModuleList::FindFirstModuleForFileSpec (const FileSpec &file_spec,
const ArchSpec *arch_ptr,
const ConstString *object_name)
{
ModuleSP module_sp;
ModuleMatches matcher (&file_spec,
arch_ptr,
NULL,
object_name,
false);
// Scope for "locker"
{
Mutex::Locker locker(m_modules_mutex);
collection::const_iterator end = m_modules.end();
collection::const_iterator pos = m_modules.begin();
pos = std::find_if (pos, end, matcher);
if (pos != end)
module_sp = (*pos);
}
return module_sp;
}
ModuleSP
ModuleList::FindFirstModuleForPlatormFileSpec (const FileSpec &file_spec,
const ArchSpec *arch_ptr,
const ConstString *object_name)
{
ModuleSP module_sp;
ModuleMatches matcher (&file_spec,
arch_ptr,
NULL,
object_name,
true);
// Scope for "locker"
{
Mutex::Locker locker(m_modules_mutex);
collection::const_iterator end = m_modules.end();
collection::const_iterator pos = m_modules.begin();
pos = std::find_if (pos, end, matcher);
if (pos != end)
module_sp = (*pos);
}
return module_sp;
}
size_t
ModuleList::GetSize() const
{
size_t size = 0;
{
Mutex::Locker locker(m_modules_mutex);
size = m_modules.size();
}
return size;
}
void
ModuleList::Dump(Stream *s) const
{
// s.Printf("%.*p: ", (int)sizeof(void*) * 2, this);
// s.Indent();
// s << "ModuleList\n";
Mutex::Locker locker(m_modules_mutex);
collection::const_iterator pos, end = m_modules.end();
for (pos = m_modules.begin(); pos != end; ++pos)
{
(*pos)->Dump(s);
}
}
void
ModuleList::LogUUIDAndPaths (LogSP &log_sp, const char *prefix_cstr)
{
if (log_sp)
{
Mutex::Locker locker(m_modules_mutex);
char uuid_cstr[256];
collection::const_iterator pos, begin = m_modules.begin(), end = m_modules.end();
for (pos = begin; pos != end; ++pos)
{
Module *module = pos->get();
module->GetUUID().GetAsCString (uuid_cstr, sizeof(uuid_cstr));
const FileSpec &module_file_spec = module->GetFileSpec();
log_sp->Printf ("%s[%u] %s (%s) \"%s/%s\"",
prefix_cstr ? prefix_cstr : "",
(uint32_t)std::distance (begin, pos),
uuid_cstr,
module->GetArchitecture().GetArchitectureName(),
module_file_spec.GetDirectory().GetCString(),
module_file_spec.GetFilename().GetCString());
}
}
}
bool
ModuleList::ResolveFileAddress (lldb::addr_t vm_addr, Address& so_addr)
{
Mutex::Locker locker(m_modules_mutex);
collection::const_iterator pos, end = m_modules.end();
for (pos = m_modules.begin(); pos != end; ++pos)
{
if ((*pos)->ResolveFileAddress (vm_addr, so_addr))
return true;
}
return false;
}
uint32_t
ModuleList::ResolveSymbolContextForAddress (const Address& so_addr, uint32_t resolve_scope, SymbolContext& sc)
{
// The address is already section offset so it has a module
uint32_t resolved_flags = 0;
Module *module = so_addr.GetModule();
if (module)
{
resolved_flags = module->ResolveSymbolContextForAddress (so_addr,
resolve_scope,
sc);
}
else
{
Mutex::Locker locker(m_modules_mutex);
collection::const_iterator pos, end = m_modules.end();
for (pos = m_modules.begin(); pos != end; ++pos)
{
resolved_flags = (*pos)->ResolveSymbolContextForAddress (so_addr,
resolve_scope,
sc);
if (resolved_flags != 0)
break;
}
}
return resolved_flags;
}
uint32_t
ModuleList::ResolveSymbolContextForFilePath
(
const char *file_path,
uint32_t line,
bool check_inlines,
uint32_t resolve_scope,
SymbolContextList& sc_list
)
{
FileSpec file_spec(file_path, false);
return ResolveSymbolContextsForFileSpec (file_spec, line, check_inlines, resolve_scope, sc_list);
}
uint32_t
ModuleList::ResolveSymbolContextsForFileSpec (const FileSpec &file_spec, uint32_t line, bool check_inlines, uint32_t resolve_scope, SymbolContextList& sc_list)
{
Mutex::Locker locker(m_modules_mutex);
collection::const_iterator pos, end = m_modules.end();
for (pos = m_modules.begin(); pos != end; ++pos)
{
(*pos)->ResolveSymbolContextsForFileSpec (file_spec, line, check_inlines, resolve_scope, sc_list);
}
return sc_list.GetSize();
}
uint32_t
ModuleList::GetIndexForModule (const Module *module) const
{
if (module)
{
Mutex::Locker locker(m_modules_mutex);
collection::const_iterator pos;
collection::const_iterator begin = m_modules.begin();
collection::const_iterator end = m_modules.end();
for (pos = begin; pos != end; ++pos)
{
if ((*pos).get() == module)
return std::distance (begin, pos);
}
}
return LLDB_INVALID_INDEX32;
}
static ModuleList &
GetSharedModuleList ()
{
static ModuleList g_shared_module_list;
return g_shared_module_list;
}
const lldb::ModuleSP
ModuleList::GetModuleSP (const Module *module_ptr)
{
lldb::ModuleSP module_sp;
if (module_ptr)
{
ModuleList &shared_module_list = GetSharedModuleList ();
module_sp = shared_module_list.FindModule (module_ptr);
if (module_sp.get() == NULL)
{
char uuid_cstr[256];
const_cast<Module *>(module_ptr)->GetUUID().GetAsCString (uuid_cstr, sizeof(uuid_cstr));
const FileSpec &module_file_spec = module_ptr->GetFileSpec();
fprintf (stderr, "warning: module not in shared module list: %s (%s) \"%s/%s\"\n",
uuid_cstr,
module_ptr->GetArchitecture().GetArchitectureName(),
module_file_spec.GetDirectory().GetCString(),
module_file_spec.GetFilename().GetCString());
}
}
return module_sp;
}
size_t
ModuleList::FindSharedModules
(
const FileSpec& in_file_spec,
const ArchSpec& arch,
const lldb_private::UUID *uuid_ptr,
const ConstString *object_name_ptr,
ModuleList &matching_module_list
)
{
ModuleList &shared_module_list = GetSharedModuleList ();
return shared_module_list.FindModules (&in_file_spec, &arch, uuid_ptr, object_name_ptr, matching_module_list);
}
Error
ModuleList::GetSharedModule
(
const FileSpec& in_file_spec,
const ArchSpec& arch,
const lldb_private::UUID *uuid_ptr,
const ConstString *object_name_ptr,
off_t object_offset,
ModuleSP &module_sp,
ModuleSP *old_module_sp_ptr,
bool *did_create_ptr,
bool always_create
)
{
ModuleList &shared_module_list = GetSharedModuleList ();
Mutex::Locker locker(shared_module_list.m_modules_mutex);
char path[PATH_MAX];
char uuid_cstr[64];
Error error;
module_sp.reset();
if (did_create_ptr)
*did_create_ptr = false;
if (old_module_sp_ptr)
old_module_sp_ptr->reset();
// First just try and get the file where it purports to be (path in
// in_file_spec), then check and uuid.
if (in_file_spec)
{
// Make sure no one else can try and get or create a module while this
// function is actively working on it by doing an extra lock on the
// global mutex list.
if (always_create == false)
{
ModuleList matching_module_list;
const size_t num_matching_modules = shared_module_list.FindModules (&in_file_spec, &arch, NULL, object_name_ptr, matching_module_list);
if (num_matching_modules > 0)
{
for (uint32_t module_idx = 0; module_idx < num_matching_modules; ++module_idx)
{
module_sp = matching_module_list.GetModuleAtIndex(module_idx);
if (uuid_ptr && uuid_ptr->IsValid())
{
// We found the module we were looking for.
if (module_sp->GetUUID() == *uuid_ptr)
return error;
}
else
{
// If we didn't have a UUID in mind when looking for the object file,
// then we should make sure the modification time hasn't changed!
TimeValue file_spec_mod_time(in_file_spec.GetModificationTime());
if (file_spec_mod_time.IsValid())
{
if (file_spec_mod_time == module_sp->GetModificationTime())
return error;
}
}
if (old_module_sp_ptr && !old_module_sp_ptr->get())
*old_module_sp_ptr = module_sp;
shared_module_list.Remove (module_sp);
module_sp.reset();
}
}
}
if (module_sp)
return error;
else
{
module_sp.reset (new Module (in_file_spec, arch, object_name_ptr, object_offset));
if (module_sp)
{
// If we get in here we got the correct arch, now we just need
// to verify the UUID if one was given
if (uuid_ptr && *uuid_ptr != module_sp->GetUUID())
module_sp.reset();
else
{
if (did_create_ptr)
*did_create_ptr = true;
shared_module_list.Append(module_sp);
return error;
}
}
}
}
// Either the file didn't exist where at the path, or no path was given, so
// we now have to use more extreme measures to try and find the appropriate
// module.
// Fixup the incoming path in case the path points to a valid file, yet
// the arch or UUID (if one was passed in) don't match.
FileSpec file_spec = Symbols::LocateExecutableObjectFile (&in_file_spec, arch.IsValid() ? &arch : NULL, uuid_ptr);
// Don't look for the file if it appears to be the same one we already
// checked for above...
if (file_spec != in_file_spec)
{
if (!file_spec.Exists())
{
file_spec.GetPath(path, sizeof(path));
if (file_spec.Exists())
{
if (uuid_ptr && uuid_ptr->IsValid())
uuid_ptr->GetAsCString(uuid_cstr, sizeof (uuid_cstr));
else
uuid_cstr[0] = '\0';
if (arch.IsValid())
{
if (uuid_cstr[0])
error.SetErrorStringWithFormat("'%s' does not contain the %s architecture and UUID %s.\n", path, arch.GetArchitectureName(), uuid_cstr[0]);
else
error.SetErrorStringWithFormat("'%s' does not contain the %s architecture.\n", path, arch.GetArchitectureName());
}
}
else
{
error.SetErrorStringWithFormat("'%s' does not exist.\n", path);
}
return error;
}
// Make sure no one else can try and get or create a module while this
// function is actively working on it by doing an extra lock on the
// global mutex list.
ModuleList matching_module_list;
if (shared_module_list.FindModules (&file_spec, &arch, uuid_ptr, object_name_ptr, matching_module_list) > 0)
{
module_sp = matching_module_list.GetModuleAtIndex(0);
// If we didn't have a UUID in mind when looking for the object file,
// then we should make sure the modification time hasn't changed!
if (uuid_ptr == NULL)
{
TimeValue file_spec_mod_time(file_spec.GetModificationTime());
if (file_spec_mod_time.IsValid())
{
if (file_spec_mod_time != module_sp->GetModificationTime())
{
if (old_module_sp_ptr)
*old_module_sp_ptr = module_sp;
shared_module_list.Remove (module_sp);
module_sp.reset();
}
}
}
}
if (module_sp.get() == NULL)
{
module_sp.reset (new Module (file_spec, arch, object_name_ptr, object_offset));
if (module_sp)
{
if (did_create_ptr)
*did_create_ptr = true;
shared_module_list.Append(module_sp);
}
else
{
file_spec.GetPath(path, sizeof(path));
if (file_spec)
{
if (arch.IsValid())
error.SetErrorStringWithFormat("Unable to open %s architecture in '%s'.\n", arch.GetArchitectureName(), path);
else
error.SetErrorStringWithFormat("Unable to open '%s'.\n", path);
}
else
{
if (uuid_ptr && uuid_ptr->IsValid())
uuid_ptr->GetAsCString(uuid_cstr, sizeof (uuid_cstr));
else
uuid_cstr[0] = '\0';
if (uuid_cstr[0])
error.SetErrorStringWithFormat("Cannot locate a module for UUID '%s'.\n", uuid_cstr[0]);
else
error.SetErrorStringWithFormat("Cannot locate a module.\n", path, arch.GetArchitectureName());
}
}
}
}
return error;
}
bool
ModuleList::RemoveSharedModule (lldb::ModuleSP &module_sp)
{
return GetSharedModuleList ().Remove (module_sp);
}
Reference in New Issue View Git Blame Copy Permalink