9ab5dc2417
for the fall (northern hemisphere) 2016 Darwin platforms to learn
about loaded images, instead of reading dyld internal data structures.
These new SPI don't exist on older releases, and new packets are
needed from debugserver to use them (those changes are already committed).
I had to change the minimum deployment target for debugserver in the xcode
project file to macOS 10.10 so that debugserver will use the
[[NSProcessInfo processInfo] operatingSystemVersion]
call in MachProcess::GetOSVersionNumbers to get the operarting system
version # -- this API is only available in macOS 10.10 and newer
("OS X Yosemite", released Oct 2014). If we have many people building
llvm.org lldb on older systems still, we can back off on this for the
llvm.org sources.
There should be no change in behavior with this commit, either to
older darwin systems or newer darwin systems.
For now the new DynamicLoader plugin is never activated - I'm forcing
the old plugin to be used in DynamicLoaderDarwin::UseDYLDSPI.
I'll remove that unconditional use of the old plugin soon, so the
newer plugin is used on the newest Darwin platforms.
<rdar://problem/25251243>
llvm-svn: 276254
130 lines
3.8 KiB
C++
130 lines
3.8 KiB
C++
//===-- DynamicLoaderMacOS.h -------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// This is the DynamicLoader plugin for Darwin (macOS / iPhoneOS / tvOS / watchOS)
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// platforms late 2016 and newer, where lldb will call dyld SPI functions to get
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// information about shared libraries, information about the shared cache, and
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// the _dyld_debugger_notification function we put a breakpoint on give us an
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// array of load addresses for solibs loaded and unloaded. The SPI will tell us
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// about both dyld and the executable, in addition to all of the usual solibs.
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#ifndef liblldb_DynamicLoaderMacOS_h_
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#define liblldb_DynamicLoaderMacOS_h_
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// C Includes
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// C++ Includes
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#include <vector>
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#include <mutex>
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// Other libraries and framework includes
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// Project includes
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#include "lldb/Target/DynamicLoader.h"
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#include "lldb/Host/FileSpec.h"
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#include "lldb/Core/StructuredData.h"
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#include "lldb/Core/UUID.h"
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#include "lldb/Target/Process.h"
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#include "lldb/Utility/SafeMachO.h"
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#include "DynamicLoaderDarwin.h"
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class DynamicLoaderMacOS : public lldb_private::DynamicLoaderDarwin
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{
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public:
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DynamicLoaderMacOS(lldb_private::Process *process);
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virtual ~DynamicLoaderMacOS() override;
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//------------------------------------------------------------------
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// Static Functions
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//------------------------------------------------------------------
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static void
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Initialize();
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static void
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Terminate();
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static lldb_private::ConstString
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GetPluginNameStatic();
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static const char *
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GetPluginDescriptionStatic();
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static lldb_private::DynamicLoader *
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CreateInstance (lldb_private::Process *process, bool force);
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//------------------------------------------------------------------
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/// Called after attaching a process.
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///
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/// Allow DynamicLoader plug-ins to execute some code after
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/// attaching to a process.
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//------------------------------------------------------------------
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bool
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ProcessDidExec() override;
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lldb_private::Error
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CanLoadImage() override;
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//------------------------------------------------------------------
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// PluginInterface protocol
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//------------------------------------------------------------------
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lldb_private::ConstString
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GetPluginName() override;
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uint32_t
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GetPluginVersion() override;
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protected:
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void
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PutToLog(lldb_private::Log *log) const;
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void
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DoInitialImageFetch () override;
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bool
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NeedToDoInitialImageFetch () override;
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bool
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DidSetNotificationBreakpoint () override;
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void
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AddBinaries (const std::vector<lldb::addr_t> &load_addresses);
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void
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DoClear () override;
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static bool
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NotifyBreakpointHit (void *baton,
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lldb_private::StoppointCallbackContext *context,
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lldb::user_id_t break_id,
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lldb::user_id_t break_loc_id);
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bool
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SetNotificationBreakpoint () override;
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void
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ClearNotificationBreakpoint () override;
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void
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UpdateImageInfosHeaderAndLoadCommands(ImageInfo::collection &image_infos,
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uint32_t infos_count,
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bool update_executable);
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lldb::addr_t
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GetDyldLockVariableAddressFromModule (lldb_private::Module *module);
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uint32_t m_image_infos_stop_id; // The Stop ID the last time we loaded/unloaded images
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lldb::user_id_t m_break_id;
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mutable std::recursive_mutex m_mutex;
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private:
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DISALLOW_COPY_AND_ASSIGN (DynamicLoaderMacOS);
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};
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#endif // liblldb_DynamicLoaderMacOS_h_
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