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//===-- DynamicLoaderMacOSXDYLD.h -------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef liblldb_DynamicLoaderMacOSXDYLD_h_
#define liblldb_DynamicLoaderMacOSXDYLD_h_
// C Includes
// C++ Includes
#include <vector>
#include <mutex>
// Other libraries and framework includes
// Project includes
#include "lldb/Target/DynamicLoader.h"
#include "lldb/Host/FileSpec.h"
#include "lldb/Core/StructuredData.h"
#include "lldb/Core/UUID.h"
#include "lldb/Target/Process.h"
#include "lldb/Utility/SafeMachO.h"
#include "DynamicLoaderDarwin.h"
class DynamicLoaderMacOSXDYLD : public lldb_private::DynamicLoaderDarwin
{
public:
DynamicLoaderMacOSXDYLD(lldb_private::Process *process);
virtual ~DynamicLoaderMacOSXDYLD() override;
//------------------------------------------------------------------
// Static Functions
//------------------------------------------------------------------
static void
Initialize();
static void
Terminate();
static lldb_private::ConstString
GetPluginNameStatic();
static const char *
GetPluginDescriptionStatic();
static lldb_private::DynamicLoader *
CreateInstance (lldb_private::Process *process, bool force);
//------------------------------------------------------------------
/// Called after attaching a process.
///
/// Allow DynamicLoader plug-ins to execute some code after
/// attaching to a process.
//------------------------------------------------------------------
bool
ProcessDidExec() override;
lldb_private::Error
CanLoadImage() override;
//------------------------------------------------------------------
// PluginInterface protocol
//------------------------------------------------------------------
lldb_private::ConstString
GetPluginName() override;
uint32_t
GetPluginVersion() override;
protected:
void
PutToLog(lldb_private::Log *log) const;
void
DoInitialImageFetch () override;
bool
NeedToDoInitialImageFetch () override;
bool
DidSetNotificationBreakpoint () override;
void
DoClear () override;
bool
ReadDYLDInfoFromMemoryAndSetNotificationCallback (lldb::addr_t addr);
static bool
NotifyBreakpointHit (void *baton,
lldb_private::StoppointCallbackContext *context,
lldb::user_id_t break_id,
lldb::user_id_t break_loc_id);
uint32_t
AddrByteSize();
bool
ReadMachHeader (lldb::addr_t addr,
llvm::MachO::mach_header *header,
lldb_private::DataExtractor *load_command_data);
uint32_t
ParseLoadCommands (const lldb_private::DataExtractor& data,
ImageInfo& dylib_info,
lldb_private::FileSpec *lc_id_dylinker);
struct DYLDAllImageInfos
{
uint32_t version;
uint32_t dylib_info_count; // Version >= 1
lldb::addr_t dylib_info_addr; // Version >= 1
lldb::addr_t notification; // Version >= 1
bool processDetachedFromSharedRegion; // Version >= 1
bool libSystemInitialized; // Version >= 2
lldb::addr_t dyldImageLoadAddress; // Version >= 2
DYLDAllImageInfos() :
version (0),
dylib_info_count (0),
dylib_info_addr (LLDB_INVALID_ADDRESS),
notification (LLDB_INVALID_ADDRESS),
processDetachedFromSharedRegion (false),
libSystemInitialized (false),
dyldImageLoadAddress (LLDB_INVALID_ADDRESS)
{
}
void
Clear()
{
version = 0;
dylib_info_count = 0;
dylib_info_addr = LLDB_INVALID_ADDRESS;
notification = LLDB_INVALID_ADDRESS;
processDetachedFromSharedRegion = false;
libSystemInitialized = false;
dyldImageLoadAddress = LLDB_INVALID_ADDRESS;
}
bool
IsValid() const
{
return version >= 1 || version <= 6;
}
};
static lldb::ByteOrder
GetByteOrderFromMagic(uint32_t magic);
bool
SetNotificationBreakpoint () override;
void
ClearNotificationBreakpoint () override;
// There is a little tricky bit where you might initially attach while dyld is updating
// the all_image_infos, and you can't read the infos, so you have to continue and pick it
// up when you hit the update breakpoint. At that point, you need to run this initialize
// function, but when you do it that way you DON'T need to do the extra work you would at
// the breakpoint.
// So this function will only do actual work if the image infos haven't been read yet.
// If it does do any work, then it will return true, and false otherwise. That way you can
// call it in the breakpoint action, and if it returns true you're done.
bool
InitializeFromAllImageInfos ();
bool
ReadAllImageInfosStructure ();
bool
AddModulesUsingImageInfosAddress (lldb::addr_t image_infos_addr, uint32_t image_infos_count);
bool
RemoveModulesUsingImageInfosAddress (lldb::addr_t image_infos_addr, uint32_t image_infos_count);
void
UpdateImageInfosHeaderAndLoadCommands(ImageInfo::collection &image_infos,
uint32_t infos_count,
bool update_executable);
bool
ReadImageInfos (lldb::addr_t image_infos_addr,
uint32_t image_infos_count,
ImageInfo::collection &image_infos);
lldb::addr_t m_dyld_all_image_infos_addr;
DYLDAllImageInfos m_dyld_all_image_infos;
uint32_t m_dyld_all_image_infos_stop_id;
lldb::user_id_t m_break_id;
mutable std::recursive_mutex m_mutex;
bool m_process_image_addr_is_all_images_infos;
private:
DISALLOW_COPY_AND_ASSIGN (DynamicLoaderMacOSXDYLD);
};
#endif // liblldb_DynamicLoaderMacOSXDYLD_h_
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