5241 lines
202 KiB
C++
5241 lines
202 KiB
C++
//===-- ProcessGDBRemote.cpp ------------------------------------*- 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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#include "lldb/Host/Config.h"
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// C Includes
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#include <errno.h>
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#include <stdlib.h>
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#ifndef LLDB_DISABLE_POSIX
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#include <netinet/in.h>
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#include <sys/mman.h> // for mmap
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#endif
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <time.h>
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// C++ Includes
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#include <algorithm>
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#include <map>
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#include <mutex>
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#include "lldb/Breakpoint/Watchpoint.h"
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#include "lldb/Interpreter/Args.h"
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#include "lldb/Core/ArchSpec.h"
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#include "lldb/Core/Debugger.h"
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#include "lldb/Host/ConnectionFileDescriptor.h"
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#include "lldb/Host/FileSpec.h"
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#include "lldb/Core/Module.h"
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#include "lldb/Core/ModuleSpec.h"
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#include "lldb/Core/PluginManager.h"
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#include "lldb/Core/State.h"
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#include "lldb/Core/StreamFile.h"
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#include "lldb/Core/StreamString.h"
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#include "lldb/Core/Timer.h"
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#include "lldb/Core/Value.h"
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#include "lldb/DataFormatters/FormatManager.h"
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#include "lldb/Host/FileSystem.h"
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#include "lldb/Host/HostThread.h"
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#include "lldb/Host/StringConvert.h"
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#include "lldb/Host/Symbols.h"
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#include "lldb/Host/ThreadLauncher.h"
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#include "lldb/Host/TimeValue.h"
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#include "lldb/Host/XML.h"
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#include "lldb/Interpreter/CommandInterpreter.h"
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#include "lldb/Interpreter/CommandObject.h"
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#include "lldb/Interpreter/CommandObjectMultiword.h"
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#include "lldb/Interpreter/CommandReturnObject.h"
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#include "lldb/Interpreter/OptionValueProperties.h"
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#include "lldb/Interpreter/Options.h"
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#include "lldb/Interpreter/OptionGroupBoolean.h"
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#include "lldb/Interpreter/OptionGroupUInt64.h"
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#include "lldb/Interpreter/Property.h"
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#include "lldb/Symbol/ObjectFile.h"
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#include "lldb/Target/ABI.h"
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#include "lldb/Target/DynamicLoader.h"
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#include "lldb/Target/Target.h"
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#include "lldb/Target/TargetList.h"
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#include "lldb/Target/ThreadPlanCallFunction.h"
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#include "lldb/Target/SystemRuntime.h"
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#include "lldb/Utility/PseudoTerminal.h"
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// Project includes
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#include "lldb/Host/Host.h"
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#include "Plugins/Process/Utility/GDBRemoteSignals.h"
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#include "Plugins/Process/Utility/InferiorCallPOSIX.h"
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#include "Plugins/Process/Utility/StopInfoMachException.h"
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#include "Plugins/Platform/MacOSX/PlatformRemoteiOS.h"
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#include "Utility/StringExtractorGDBRemote.h"
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#include "GDBRemoteRegisterContext.h"
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#include "ProcessGDBRemote.h"
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#include "ProcessGDBRemoteLog.h"
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#include "ThreadGDBRemote.h"
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#define DEBUGSERVER_BASENAME "debugserver"
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using namespace lldb;
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using namespace lldb_private;
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using namespace lldb_private::process_gdb_remote;
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namespace lldb
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{
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// Provide a function that can easily dump the packet history if we know a
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// ProcessGDBRemote * value (which we can get from logs or from debugging).
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// We need the function in the lldb namespace so it makes it into the final
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// executable since the LLDB shared library only exports stuff in the lldb
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// namespace. This allows you to attach with a debugger and call this
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// function and get the packet history dumped to a file.
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void
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DumpProcessGDBRemotePacketHistory (void *p, const char *path)
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{
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StreamFile strm;
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Error error (strm.GetFile().Open(path, File::eOpenOptionWrite | File::eOpenOptionCanCreate));
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if (error.Success())
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((ProcessGDBRemote *)p)->GetGDBRemote().DumpHistory (strm);
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}
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}
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namespace {
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static PropertyDefinition
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g_properties[] =
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{
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{ "packet-timeout" , OptionValue::eTypeUInt64 , true , 1, NULL, NULL, "Specify the default packet timeout in seconds." },
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{ "target-definition-file" , OptionValue::eTypeFileSpec , true, 0 , NULL, NULL, "The file that provides the description for remote target registers." },
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{ NULL , OptionValue::eTypeInvalid, false, 0, NULL, NULL, NULL }
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};
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enum
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{
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ePropertyPacketTimeout,
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ePropertyTargetDefinitionFile
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};
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class PluginProperties : public Properties
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{
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public:
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static ConstString
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GetSettingName ()
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{
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return ProcessGDBRemote::GetPluginNameStatic();
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}
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PluginProperties() :
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Properties ()
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{
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m_collection_sp.reset (new OptionValueProperties(GetSettingName()));
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m_collection_sp->Initialize(g_properties);
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}
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virtual
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~PluginProperties()
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{
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}
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uint64_t
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GetPacketTimeout()
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{
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const uint32_t idx = ePropertyPacketTimeout;
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return m_collection_sp->GetPropertyAtIndexAsUInt64(NULL, idx, g_properties[idx].default_uint_value);
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}
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bool
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SetPacketTimeout(uint64_t timeout)
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{
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const uint32_t idx = ePropertyPacketTimeout;
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return m_collection_sp->SetPropertyAtIndexAsUInt64(NULL, idx, timeout);
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}
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FileSpec
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GetTargetDefinitionFile () const
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{
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const uint32_t idx = ePropertyTargetDefinitionFile;
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return m_collection_sp->GetPropertyAtIndexAsFileSpec (NULL, idx);
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}
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};
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typedef std::shared_ptr<PluginProperties> ProcessKDPPropertiesSP;
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static const ProcessKDPPropertiesSP &
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GetGlobalPluginProperties()
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{
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static ProcessKDPPropertiesSP g_settings_sp;
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if (!g_settings_sp)
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g_settings_sp.reset (new PluginProperties ());
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return g_settings_sp;
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}
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} // anonymous namespace end
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class ProcessGDBRemote::GDBLoadedModuleInfoList
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{
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public:
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class LoadedModuleInfo
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{
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public:
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enum e_data_point
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{
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e_has_name = 0,
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e_has_base ,
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e_has_dynamic ,
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e_has_link_map ,
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e_num
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};
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LoadedModuleInfo ()
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{
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for (uint32_t i = 0; i < e_num; ++i)
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m_has[i] = false;
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}
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void set_name (const std::string & name)
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{
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m_name = name;
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m_has[e_has_name] = true;
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}
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bool get_name (std::string & out) const
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{
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out = m_name;
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return m_has[e_has_name];
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}
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void set_base (const lldb::addr_t base)
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{
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m_base = base;
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m_has[e_has_base] = true;
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}
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bool get_base (lldb::addr_t & out) const
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{
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out = m_base;
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return m_has[e_has_base];
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}
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void set_base_is_offset (bool is_offset)
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{
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m_base_is_offset = is_offset;
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}
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bool get_base_is_offset(bool & out) const
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{
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out = m_base_is_offset;
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return m_has[e_has_base];
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}
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void set_link_map (const lldb::addr_t addr)
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{
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m_link_map = addr;
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m_has[e_has_link_map] = true;
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}
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bool get_link_map (lldb::addr_t & out) const
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{
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out = m_link_map;
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return m_has[e_has_link_map];
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}
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void set_dynamic (const lldb::addr_t addr)
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{
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m_dynamic = addr;
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m_has[e_has_dynamic] = true;
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}
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bool get_dynamic (lldb::addr_t & out) const
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{
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out = m_dynamic;
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return m_has[e_has_dynamic];
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}
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bool has_info (e_data_point datum)
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{
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assert (datum < e_num);
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return m_has[datum];
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}
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protected:
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bool m_has[e_num];
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std::string m_name;
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lldb::addr_t m_link_map;
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lldb::addr_t m_base;
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bool m_base_is_offset;
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lldb::addr_t m_dynamic;
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};
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GDBLoadedModuleInfoList ()
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: m_list ()
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, m_link_map (LLDB_INVALID_ADDRESS)
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{}
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void add (const LoadedModuleInfo & mod)
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{
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m_list.push_back (mod);
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}
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void clear ()
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{
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m_list.clear ();
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}
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std::vector<LoadedModuleInfo> m_list;
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lldb::addr_t m_link_map;
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};
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// TODO Randomly assigning a port is unsafe. We should get an unused
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// ephemeral port from the kernel and make sure we reserve it before passing
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// it to debugserver.
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#if defined (__APPLE__)
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#define LOW_PORT (IPPORT_RESERVED)
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#define HIGH_PORT (IPPORT_HIFIRSTAUTO)
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#else
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#define LOW_PORT (1024u)
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#define HIGH_PORT (49151u)
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#endif
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#if defined(__APPLE__) && (defined(__arm__) || defined(__arm64__) || defined(__aarch64__))
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static bool rand_initialized = false;
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static inline uint16_t
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get_random_port ()
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{
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if (!rand_initialized)
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{
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time_t seed = time(NULL);
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rand_initialized = true;
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srand(seed);
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}
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return (rand() % (HIGH_PORT - LOW_PORT)) + LOW_PORT;
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}
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#endif
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ConstString
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ProcessGDBRemote::GetPluginNameStatic()
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{
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static ConstString g_name("gdb-remote");
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return g_name;
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}
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const char *
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ProcessGDBRemote::GetPluginDescriptionStatic()
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{
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return "GDB Remote protocol based debugging plug-in.";
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}
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void
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ProcessGDBRemote::Terminate()
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{
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PluginManager::UnregisterPlugin (ProcessGDBRemote::CreateInstance);
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}
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lldb::ProcessSP
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ProcessGDBRemote::CreateInstance (lldb::TargetSP target_sp, Listener &listener, const FileSpec *crash_file_path)
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{
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lldb::ProcessSP process_sp;
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if (crash_file_path == NULL)
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process_sp.reset (new ProcessGDBRemote (target_sp, listener));
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return process_sp;
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}
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bool
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ProcessGDBRemote::CanDebug (lldb::TargetSP target_sp, bool plugin_specified_by_name)
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{
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if (plugin_specified_by_name)
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return true;
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// For now we are just making sure the file exists for a given module
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Module *exe_module = target_sp->GetExecutableModulePointer();
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if (exe_module)
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{
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ObjectFile *exe_objfile = exe_module->GetObjectFile();
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// We can't debug core files...
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switch (exe_objfile->GetType())
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{
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case ObjectFile::eTypeInvalid:
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case ObjectFile::eTypeCoreFile:
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case ObjectFile::eTypeDebugInfo:
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case ObjectFile::eTypeObjectFile:
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case ObjectFile::eTypeSharedLibrary:
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case ObjectFile::eTypeStubLibrary:
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case ObjectFile::eTypeJIT:
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return false;
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case ObjectFile::eTypeExecutable:
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case ObjectFile::eTypeDynamicLinker:
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case ObjectFile::eTypeUnknown:
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break;
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}
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return exe_module->GetFileSpec().Exists();
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}
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// However, if there is no executable module, we return true since we might be preparing to attach.
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return true;
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}
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//----------------------------------------------------------------------
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// ProcessGDBRemote constructor
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//----------------------------------------------------------------------
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ProcessGDBRemote::ProcessGDBRemote(lldb::TargetSP target_sp, Listener &listener) :
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Process (target_sp, listener),
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m_flags (0),
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m_gdb_comm (),
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m_debugserver_pid (LLDB_INVALID_PROCESS_ID),
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m_last_stop_packet_mutex (Mutex::eMutexTypeRecursive),
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m_register_info (),
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m_async_broadcaster (NULL, "lldb.process.gdb-remote.async-broadcaster"),
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m_async_listener("lldb.process.gdb-remote.async-listener"),
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m_async_thread_state_mutex(Mutex::eMutexTypeRecursive),
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m_thread_ids (),
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m_jstopinfo_sp (),
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m_jthreadsinfo_sp (),
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m_continue_c_tids (),
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m_continue_C_tids (),
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m_continue_s_tids (),
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m_continue_S_tids (),
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m_max_memory_size (0),
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m_remote_stub_max_memory_size (0),
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m_addr_to_mmap_size (),
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m_thread_create_bp_sp (),
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m_waiting_for_attach (false),
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m_destroy_tried_resuming (false),
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m_command_sp (),
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m_breakpoint_pc_offset (0),
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m_initial_tid (LLDB_INVALID_THREAD_ID)
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{
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m_async_broadcaster.SetEventName (eBroadcastBitAsyncThreadShouldExit, "async thread should exit");
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m_async_broadcaster.SetEventName (eBroadcastBitAsyncContinue, "async thread continue");
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m_async_broadcaster.SetEventName (eBroadcastBitAsyncThreadDidExit, "async thread did exit");
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Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_ASYNC));
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const uint32_t async_event_mask = eBroadcastBitAsyncContinue | eBroadcastBitAsyncThreadShouldExit;
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if (m_async_listener.StartListeningForEvents(&m_async_broadcaster, async_event_mask) != async_event_mask)
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{
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if (log)
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log->Printf("ProcessGDBRemote::%s failed to listen for m_async_broadcaster events", __FUNCTION__);
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}
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const uint32_t gdb_event_mask = Communication::eBroadcastBitReadThreadDidExit |
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GDBRemoteCommunication::eBroadcastBitGdbReadThreadGotNotify;
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if (m_async_listener.StartListeningForEvents(&m_gdb_comm, gdb_event_mask) != gdb_event_mask)
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{
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if (log)
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log->Printf("ProcessGDBRemote::%s failed to listen for m_gdb_comm events", __FUNCTION__);
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}
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const uint64_t timeout_seconds = GetGlobalPluginProperties()->GetPacketTimeout();
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if (timeout_seconds > 0)
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m_gdb_comm.SetPacketTimeout(timeout_seconds);
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}
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//----------------------------------------------------------------------
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// Destructor
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//----------------------------------------------------------------------
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ProcessGDBRemote::~ProcessGDBRemote()
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{
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// m_mach_process.UnregisterNotificationCallbacks (this);
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Clear();
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// We need to call finalize on the process before destroying ourselves
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// to make sure all of the broadcaster cleanup goes as planned. If we
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// destruct this class, then Process::~Process() might have problems
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// trying to fully destroy the broadcaster.
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Finalize();
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// The general Finalize is going to try to destroy the process and that SHOULD
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// shut down the async thread. However, if we don't kill it it will get stranded and
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// its connection will go away so when it wakes up it will crash. So kill it for sure here.
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StopAsyncThread();
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KillDebugserverProcess();
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}
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//----------------------------------------------------------------------
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// PluginInterface
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//----------------------------------------------------------------------
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ConstString
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ProcessGDBRemote::GetPluginName()
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{
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return GetPluginNameStatic();
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}
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uint32_t
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ProcessGDBRemote::GetPluginVersion()
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{
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return 1;
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}
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bool
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ProcessGDBRemote::ParsePythonTargetDefinition(const FileSpec &target_definition_fspec)
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{
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ScriptInterpreter *interpreter = GetTarget().GetDebugger().GetCommandInterpreter().GetScriptInterpreter();
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Error error;
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StructuredData::ObjectSP module_object_sp(interpreter->LoadPluginModule(target_definition_fspec, error));
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if (module_object_sp)
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{
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StructuredData::DictionarySP target_definition_sp(
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interpreter->GetDynamicSettings(module_object_sp, &GetTarget(), "gdb-server-target-definition", error));
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if (target_definition_sp)
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{
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StructuredData::ObjectSP target_object(target_definition_sp->GetValueForKey("host-info"));
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if (target_object)
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{
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if (auto host_info_dict = target_object->GetAsDictionary())
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{
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StructuredData::ObjectSP triple_value = host_info_dict->GetValueForKey("triple");
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if (auto triple_string_value = triple_value->GetAsString())
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{
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std::string triple_string = triple_string_value->GetValue();
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ArchSpec host_arch(triple_string.c_str());
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if (!host_arch.IsCompatibleMatch(GetTarget().GetArchitecture()))
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{
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GetTarget().SetArchitecture(host_arch);
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}
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}
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}
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}
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m_breakpoint_pc_offset = 0;
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StructuredData::ObjectSP breakpoint_pc_offset_value = target_definition_sp->GetValueForKey("breakpoint-pc-offset");
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if (breakpoint_pc_offset_value)
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{
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if (auto breakpoint_pc_int_value = breakpoint_pc_offset_value->GetAsInteger())
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m_breakpoint_pc_offset = breakpoint_pc_int_value->GetValue();
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}
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if (m_register_info.SetRegisterInfo(*target_definition_sp, GetTarget().GetArchitecture()) > 0)
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{
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return true;
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}
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}
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}
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return false;
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}
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|
|
// If the remote stub didn't give us eh_frame or DWARF register numbers for a register,
|
|
// see if the ABI can provide them.
|
|
// DWARF and eh_frame register numbers are defined as a part of the ABI.
|
|
static void
|
|
AugmentRegisterInfoViaABI (RegisterInfo ®_info, ConstString reg_name, ABISP abi_sp)
|
|
{
|
|
if (reg_info.kinds[eRegisterKindEHFrame] == LLDB_INVALID_REGNUM
|
|
|| reg_info.kinds[eRegisterKindDWARF] == LLDB_INVALID_REGNUM)
|
|
{
|
|
if (abi_sp)
|
|
{
|
|
RegisterInfo abi_reg_info;
|
|
if (abi_sp->GetRegisterInfoByName (reg_name, abi_reg_info))
|
|
{
|
|
if (reg_info.kinds[eRegisterKindEHFrame] == LLDB_INVALID_REGNUM
|
|
&& abi_reg_info.kinds[eRegisterKindEHFrame] != LLDB_INVALID_REGNUM)
|
|
{
|
|
reg_info.kinds[eRegisterKindEHFrame] = abi_reg_info.kinds[eRegisterKindEHFrame];
|
|
}
|
|
if (reg_info.kinds[eRegisterKindDWARF] == LLDB_INVALID_REGNUM
|
|
&& abi_reg_info.kinds[eRegisterKindDWARF] != LLDB_INVALID_REGNUM)
|
|
{
|
|
reg_info.kinds[eRegisterKindDWARF] = abi_reg_info.kinds[eRegisterKindDWARF];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static size_t
|
|
SplitCommaSeparatedRegisterNumberString(const llvm::StringRef &comma_separated_regiter_numbers, std::vector<uint32_t> ®nums, int base)
|
|
{
|
|
regnums.clear();
|
|
std::pair<llvm::StringRef, llvm::StringRef> value_pair;
|
|
value_pair.second = comma_separated_regiter_numbers;
|
|
do
|
|
{
|
|
value_pair = value_pair.second.split(',');
|
|
if (!value_pair.first.empty())
|
|
{
|
|
uint32_t reg = StringConvert::ToUInt32 (value_pair.first.str().c_str(), LLDB_INVALID_REGNUM, base);
|
|
if (reg != LLDB_INVALID_REGNUM)
|
|
regnums.push_back (reg);
|
|
}
|
|
} while (!value_pair.second.empty());
|
|
return regnums.size();
|
|
}
|
|
|
|
|
|
void
|
|
ProcessGDBRemote::BuildDynamicRegisterInfo (bool force)
|
|
{
|
|
if (!force && m_register_info.GetNumRegisters() > 0)
|
|
return;
|
|
|
|
m_register_info.Clear();
|
|
|
|
// Check if qHostInfo specified a specific packet timeout for this connection.
|
|
// If so then lets update our setting so the user knows what the timeout is
|
|
// and can see it.
|
|
const uint32_t host_packet_timeout = m_gdb_comm.GetHostDefaultPacketTimeout();
|
|
if (host_packet_timeout)
|
|
{
|
|
GetGlobalPluginProperties()->SetPacketTimeout(host_packet_timeout);
|
|
}
|
|
|
|
// Register info search order:
|
|
// 1 - Use the target definition python file if one is specified.
|
|
// 2 - If the target definition doesn't have any of the info from the target.xml (registers) then proceed to read the target.xml.
|
|
// 3 - Fall back on the qRegisterInfo packets.
|
|
|
|
FileSpec target_definition_fspec = GetGlobalPluginProperties()->GetTargetDefinitionFile ();
|
|
if (!target_definition_fspec.Exists())
|
|
{
|
|
// If the filename doesn't exist, it may be a ~ not having been expanded - try to resolve it.
|
|
target_definition_fspec.ResolvePath();
|
|
}
|
|
if (target_definition_fspec)
|
|
{
|
|
// See if we can get register definitions from a python file
|
|
if (ParsePythonTargetDefinition (target_definition_fspec))
|
|
{
|
|
return;
|
|
}
|
|
else
|
|
{
|
|
StreamSP stream_sp = GetTarget().GetDebugger().GetAsyncOutputStream();
|
|
stream_sp->Printf ("ERROR: target description file %s failed to parse.\n", target_definition_fspec.GetPath().c_str());
|
|
}
|
|
}
|
|
|
|
if (GetGDBServerRegisterInfo ())
|
|
return;
|
|
|
|
char packet[128];
|
|
uint32_t reg_offset = 0;
|
|
uint32_t reg_num = 0;
|
|
for (StringExtractorGDBRemote::ResponseType response_type = StringExtractorGDBRemote::eResponse;
|
|
response_type == StringExtractorGDBRemote::eResponse;
|
|
++reg_num)
|
|
{
|
|
const int packet_len = ::snprintf (packet, sizeof(packet), "qRegisterInfo%x", reg_num);
|
|
assert (packet_len < (int)sizeof(packet));
|
|
StringExtractorGDBRemote response;
|
|
if (m_gdb_comm.SendPacketAndWaitForResponse(packet, packet_len, response, false) == GDBRemoteCommunication::PacketResult::Success)
|
|
{
|
|
response_type = response.GetResponseType();
|
|
if (response_type == StringExtractorGDBRemote::eResponse)
|
|
{
|
|
std::string name;
|
|
std::string value;
|
|
ConstString reg_name;
|
|
ConstString alt_name;
|
|
ConstString set_name;
|
|
std::vector<uint32_t> value_regs;
|
|
std::vector<uint32_t> invalidate_regs;
|
|
RegisterInfo reg_info = { NULL, // Name
|
|
NULL, // Alt name
|
|
0, // byte size
|
|
reg_offset, // offset
|
|
eEncodingUint, // encoding
|
|
eFormatHex, // format
|
|
{
|
|
LLDB_INVALID_REGNUM, // eh_frame reg num
|
|
LLDB_INVALID_REGNUM, // DWARF reg num
|
|
LLDB_INVALID_REGNUM, // generic reg num
|
|
reg_num, // process plugin reg num
|
|
reg_num // native register number
|
|
},
|
|
NULL,
|
|
NULL
|
|
};
|
|
|
|
while (response.GetNameColonValue(name, value))
|
|
{
|
|
if (name.compare("name") == 0)
|
|
{
|
|
reg_name.SetCString(value.c_str());
|
|
}
|
|
else if (name.compare("alt-name") == 0)
|
|
{
|
|
alt_name.SetCString(value.c_str());
|
|
}
|
|
else if (name.compare("bitsize") == 0)
|
|
{
|
|
reg_info.byte_size = StringConvert::ToUInt32(value.c_str(), 0, 0) / CHAR_BIT;
|
|
}
|
|
else if (name.compare("offset") == 0)
|
|
{
|
|
uint32_t offset = StringConvert::ToUInt32(value.c_str(), UINT32_MAX, 0);
|
|
if (reg_offset != offset)
|
|
{
|
|
reg_offset = offset;
|
|
}
|
|
}
|
|
else if (name.compare("encoding") == 0)
|
|
{
|
|
const Encoding encoding = Args::StringToEncoding (value.c_str());
|
|
if (encoding != eEncodingInvalid)
|
|
reg_info.encoding = encoding;
|
|
}
|
|
else if (name.compare("format") == 0)
|
|
{
|
|
Format format = eFormatInvalid;
|
|
if (Args::StringToFormat (value.c_str(), format, NULL).Success())
|
|
reg_info.format = format;
|
|
else if (value.compare("binary") == 0)
|
|
reg_info.format = eFormatBinary;
|
|
else if (value.compare("decimal") == 0)
|
|
reg_info.format = eFormatDecimal;
|
|
else if (value.compare("hex") == 0)
|
|
reg_info.format = eFormatHex;
|
|
else if (value.compare("float") == 0)
|
|
reg_info.format = eFormatFloat;
|
|
else if (value.compare("vector-sint8") == 0)
|
|
reg_info.format = eFormatVectorOfSInt8;
|
|
else if (value.compare("vector-uint8") == 0)
|
|
reg_info.format = eFormatVectorOfUInt8;
|
|
else if (value.compare("vector-sint16") == 0)
|
|
reg_info.format = eFormatVectorOfSInt16;
|
|
else if (value.compare("vector-uint16") == 0)
|
|
reg_info.format = eFormatVectorOfUInt16;
|
|
else if (value.compare("vector-sint32") == 0)
|
|
reg_info.format = eFormatVectorOfSInt32;
|
|
else if (value.compare("vector-uint32") == 0)
|
|
reg_info.format = eFormatVectorOfUInt32;
|
|
else if (value.compare("vector-float32") == 0)
|
|
reg_info.format = eFormatVectorOfFloat32;
|
|
else if (value.compare("vector-uint128") == 0)
|
|
reg_info.format = eFormatVectorOfUInt128;
|
|
}
|
|
else if (name.compare("set") == 0)
|
|
{
|
|
set_name.SetCString(value.c_str());
|
|
}
|
|
else if (name.compare("gcc") == 0 || name.compare("ehframe") == 0)
|
|
{
|
|
reg_info.kinds[eRegisterKindEHFrame] = StringConvert::ToUInt32(value.c_str(), LLDB_INVALID_REGNUM, 0);
|
|
}
|
|
else if (name.compare("dwarf") == 0)
|
|
{
|
|
reg_info.kinds[eRegisterKindDWARF] = StringConvert::ToUInt32(value.c_str(), LLDB_INVALID_REGNUM, 0);
|
|
}
|
|
else if (name.compare("generic") == 0)
|
|
{
|
|
reg_info.kinds[eRegisterKindGeneric] = Args::StringToGenericRegister (value.c_str());
|
|
}
|
|
else if (name.compare("container-regs") == 0)
|
|
{
|
|
SplitCommaSeparatedRegisterNumberString(value, value_regs, 16);
|
|
}
|
|
else if (name.compare("invalidate-regs") == 0)
|
|
{
|
|
SplitCommaSeparatedRegisterNumberString(value, invalidate_regs, 16);
|
|
}
|
|
}
|
|
|
|
reg_info.byte_offset = reg_offset;
|
|
assert (reg_info.byte_size != 0);
|
|
reg_offset += reg_info.byte_size;
|
|
if (!value_regs.empty())
|
|
{
|
|
value_regs.push_back(LLDB_INVALID_REGNUM);
|
|
reg_info.value_regs = value_regs.data();
|
|
}
|
|
if (!invalidate_regs.empty())
|
|
{
|
|
invalidate_regs.push_back(LLDB_INVALID_REGNUM);
|
|
reg_info.invalidate_regs = invalidate_regs.data();
|
|
}
|
|
|
|
AugmentRegisterInfoViaABI (reg_info, reg_name, GetABI ());
|
|
|
|
m_register_info.AddRegister(reg_info, reg_name, alt_name, set_name);
|
|
}
|
|
else
|
|
{
|
|
break; // ensure exit before reg_num is incremented
|
|
}
|
|
}
|
|
else
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (m_register_info.GetNumRegisters() > 0)
|
|
{
|
|
m_register_info.Finalize(GetTarget().GetArchitecture());
|
|
return;
|
|
}
|
|
|
|
// We didn't get anything if the accumulated reg_num is zero. See if we are
|
|
// debugging ARM and fill with a hard coded register set until we can get an
|
|
// updated debugserver down on the devices.
|
|
// On the other hand, if the accumulated reg_num is positive, see if we can
|
|
// add composite registers to the existing primordial ones.
|
|
bool from_scratch = (m_register_info.GetNumRegisters() == 0);
|
|
|
|
const ArchSpec &target_arch = GetTarget().GetArchitecture();
|
|
const ArchSpec &remote_host_arch = m_gdb_comm.GetHostArchitecture();
|
|
const ArchSpec &remote_process_arch = m_gdb_comm.GetProcessArchitecture();
|
|
|
|
// Use the process' architecture instead of the host arch, if available
|
|
ArchSpec remote_arch;
|
|
if (remote_process_arch.IsValid ())
|
|
remote_arch = remote_process_arch;
|
|
else
|
|
remote_arch = remote_host_arch;
|
|
|
|
if (!target_arch.IsValid())
|
|
{
|
|
if (remote_arch.IsValid()
|
|
&& (remote_arch.GetMachine() == llvm::Triple::arm || remote_arch.GetMachine() == llvm::Triple::thumb)
|
|
&& remote_arch.GetTriple().getVendor() == llvm::Triple::Apple)
|
|
m_register_info.HardcodeARMRegisters(from_scratch);
|
|
}
|
|
else if (target_arch.GetMachine() == llvm::Triple::arm
|
|
|| target_arch.GetMachine() == llvm::Triple::thumb)
|
|
{
|
|
m_register_info.HardcodeARMRegisters(from_scratch);
|
|
}
|
|
|
|
// At this point, we can finalize our register info.
|
|
m_register_info.Finalize (GetTarget().GetArchitecture());
|
|
}
|
|
|
|
Error
|
|
ProcessGDBRemote::WillLaunch (Module* module)
|
|
{
|
|
return WillLaunchOrAttach ();
|
|
}
|
|
|
|
Error
|
|
ProcessGDBRemote::WillAttachToProcessWithID (lldb::pid_t pid)
|
|
{
|
|
return WillLaunchOrAttach ();
|
|
}
|
|
|
|
Error
|
|
ProcessGDBRemote::WillAttachToProcessWithName (const char *process_name, bool wait_for_launch)
|
|
{
|
|
return WillLaunchOrAttach ();
|
|
}
|
|
|
|
Error
|
|
ProcessGDBRemote::DoConnectRemote (Stream *strm, const char *remote_url)
|
|
{
|
|
Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_PROCESS));
|
|
Error error (WillLaunchOrAttach ());
|
|
|
|
if (error.Fail())
|
|
return error;
|
|
|
|
error = ConnectToDebugserver (remote_url);
|
|
|
|
if (error.Fail())
|
|
return error;
|
|
StartAsyncThread ();
|
|
|
|
lldb::pid_t pid = m_gdb_comm.GetCurrentProcessID ();
|
|
if (pid == LLDB_INVALID_PROCESS_ID)
|
|
{
|
|
// We don't have a valid process ID, so note that we are connected
|
|
// and could now request to launch or attach, or get remote process
|
|
// listings...
|
|
SetPrivateState (eStateConnected);
|
|
}
|
|
else
|
|
{
|
|
// We have a valid process
|
|
SetID (pid);
|
|
GetThreadList();
|
|
StringExtractorGDBRemote response;
|
|
if (m_gdb_comm.GetStopReply(response))
|
|
{
|
|
SetLastStopPacket(response);
|
|
|
|
// '?' Packets must be handled differently in non-stop mode
|
|
if (GetTarget().GetNonStopModeEnabled())
|
|
HandleStopReplySequence();
|
|
|
|
Target &target = GetTarget();
|
|
if (!target.GetArchitecture().IsValid())
|
|
{
|
|
if (m_gdb_comm.GetProcessArchitecture().IsValid())
|
|
{
|
|
target.SetArchitecture(m_gdb_comm.GetProcessArchitecture());
|
|
}
|
|
else
|
|
{
|
|
target.SetArchitecture(m_gdb_comm.GetHostArchitecture());
|
|
}
|
|
}
|
|
|
|
const StateType state = SetThreadStopInfo (response);
|
|
if (state != eStateInvalid)
|
|
{
|
|
SetPrivateState (state);
|
|
}
|
|
else
|
|
error.SetErrorStringWithFormat ("Process %" PRIu64 " was reported after connecting to '%s', but state was not stopped: %s", pid, remote_url, StateAsCString (state));
|
|
}
|
|
else
|
|
error.SetErrorStringWithFormat ("Process %" PRIu64 " was reported after connecting to '%s', but no stop reply packet was received", pid, remote_url);
|
|
}
|
|
|
|
if (log)
|
|
log->Printf ("ProcessGDBRemote::%s pid %" PRIu64 ": normalizing target architecture initial triple: %s (GetTarget().GetArchitecture().IsValid() %s, m_gdb_comm.GetHostArchitecture().IsValid(): %s)", __FUNCTION__, GetID (), GetTarget ().GetArchitecture ().GetTriple ().getTriple ().c_str (), GetTarget ().GetArchitecture ().IsValid () ? "true" : "false", m_gdb_comm.GetHostArchitecture ().IsValid () ? "true" : "false");
|
|
|
|
|
|
if (error.Success()
|
|
&& !GetTarget().GetArchitecture().IsValid()
|
|
&& m_gdb_comm.GetHostArchitecture().IsValid())
|
|
{
|
|
// Prefer the *process'* architecture over that of the *host*, if available.
|
|
if (m_gdb_comm.GetProcessArchitecture().IsValid())
|
|
GetTarget().SetArchitecture(m_gdb_comm.GetProcessArchitecture());
|
|
else
|
|
GetTarget().SetArchitecture(m_gdb_comm.GetHostArchitecture());
|
|
}
|
|
|
|
if (log)
|
|
log->Printf ("ProcessGDBRemote::%s pid %" PRIu64 ": normalized target architecture triple: %s", __FUNCTION__, GetID (), GetTarget ().GetArchitecture ().GetTriple ().getTriple ().c_str ());
|
|
|
|
if (error.Success())
|
|
{
|
|
PlatformSP platform_sp = GetTarget().GetPlatform();
|
|
if (platform_sp && platform_sp->IsConnected())
|
|
SetUnixSignals(platform_sp->GetUnixSignals());
|
|
else
|
|
SetUnixSignals(UnixSignals::Create(GetTarget().GetArchitecture()));
|
|
}
|
|
|
|
return error;
|
|
}
|
|
|
|
Error
|
|
ProcessGDBRemote::WillLaunchOrAttach ()
|
|
{
|
|
Error error;
|
|
m_stdio_communication.Clear ();
|
|
return error;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
// Process Control
|
|
//----------------------------------------------------------------------
|
|
Error
|
|
ProcessGDBRemote::DoLaunch (Module *exe_module, ProcessLaunchInfo &launch_info)
|
|
{
|
|
Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_PROCESS));
|
|
Error error;
|
|
|
|
if (log)
|
|
log->Printf ("ProcessGDBRemote::%s() entered", __FUNCTION__);
|
|
|
|
uint32_t launch_flags = launch_info.GetFlags().Get();
|
|
FileSpec stdin_file_spec{};
|
|
FileSpec stdout_file_spec{};
|
|
FileSpec stderr_file_spec{};
|
|
FileSpec working_dir = launch_info.GetWorkingDirectory();
|
|
|
|
const FileAction *file_action;
|
|
file_action = launch_info.GetFileActionForFD (STDIN_FILENO);
|
|
if (file_action)
|
|
{
|
|
if (file_action->GetAction() == FileAction::eFileActionOpen)
|
|
stdin_file_spec = file_action->GetFileSpec();
|
|
}
|
|
file_action = launch_info.GetFileActionForFD (STDOUT_FILENO);
|
|
if (file_action)
|
|
{
|
|
if (file_action->GetAction() == FileAction::eFileActionOpen)
|
|
stdout_file_spec = file_action->GetFileSpec();
|
|
}
|
|
file_action = launch_info.GetFileActionForFD (STDERR_FILENO);
|
|
if (file_action)
|
|
{
|
|
if (file_action->GetAction() == FileAction::eFileActionOpen)
|
|
stderr_file_spec = file_action->GetFileSpec();
|
|
}
|
|
|
|
if (log)
|
|
{
|
|
if (stdin_file_spec || stdout_file_spec || stderr_file_spec)
|
|
log->Printf ("ProcessGDBRemote::%s provided with STDIO paths via launch_info: stdin=%s, stdout=%s, stderr=%s",
|
|
__FUNCTION__,
|
|
stdin_file_spec ? stdin_file_spec.GetCString() : "<null>",
|
|
stdout_file_spec ? stdout_file_spec.GetCString() : "<null>",
|
|
stderr_file_spec ? stderr_file_spec.GetCString() : "<null>");
|
|
else
|
|
log->Printf ("ProcessGDBRemote::%s no STDIO paths given via launch_info", __FUNCTION__);
|
|
}
|
|
|
|
const bool disable_stdio = (launch_flags & eLaunchFlagDisableSTDIO) != 0;
|
|
if (stdin_file_spec || disable_stdio)
|
|
{
|
|
// the inferior will be reading stdin from the specified file
|
|
// or stdio is completely disabled
|
|
m_stdin_forward = false;
|
|
}
|
|
else
|
|
{
|
|
m_stdin_forward = true;
|
|
}
|
|
|
|
// ::LogSetBitMask (GDBR_LOG_DEFAULT);
|
|
// ::LogSetOptions (LLDB_LOG_OPTION_THREADSAFE | LLDB_LOG_OPTION_PREPEND_TIMESTAMP | LLDB_LOG_OPTION_PREPEND_PROC_AND_THREAD);
|
|
// ::LogSetLogFile ("/dev/stdout");
|
|
|
|
ObjectFile * object_file = exe_module->GetObjectFile();
|
|
if (object_file)
|
|
{
|
|
// Make sure we aren't already connected?
|
|
if (!m_gdb_comm.IsConnected())
|
|
{
|
|
error = LaunchAndConnectToDebugserver (launch_info);
|
|
}
|
|
|
|
if (error.Success())
|
|
{
|
|
lldb_utility::PseudoTerminal pty;
|
|
const bool disable_stdio = (launch_flags & eLaunchFlagDisableSTDIO) != 0;
|
|
|
|
PlatformSP platform_sp (GetTarget().GetPlatform());
|
|
if (disable_stdio)
|
|
{
|
|
// set to /dev/null unless redirected to a file above
|
|
if (!stdin_file_spec)
|
|
stdin_file_spec.SetFile(FileSystem::DEV_NULL, false);
|
|
if (!stdout_file_spec)
|
|
stdout_file_spec.SetFile(FileSystem::DEV_NULL, false);
|
|
if (!stderr_file_spec)
|
|
stderr_file_spec.SetFile(FileSystem::DEV_NULL, false);
|
|
}
|
|
else if (platform_sp && platform_sp->IsHost())
|
|
{
|
|
// If the debugserver is local and we aren't disabling STDIO, lets use
|
|
// a pseudo terminal to instead of relying on the 'O' packets for stdio
|
|
// since 'O' packets can really slow down debugging if the inferior
|
|
// does a lot of output.
|
|
if ((!stdin_file_spec || !stdout_file_spec || !stderr_file_spec) &&
|
|
pty.OpenFirstAvailableMaster(O_RDWR|O_NOCTTY, NULL, 0))
|
|
{
|
|
FileSpec slave_name{pty.GetSlaveName(NULL, 0), false};
|
|
|
|
if (!stdin_file_spec)
|
|
stdin_file_spec = slave_name;
|
|
|
|
if (!stdout_file_spec)
|
|
stdout_file_spec = slave_name;
|
|
|
|
if (!stderr_file_spec)
|
|
stderr_file_spec = slave_name;
|
|
}
|
|
if (log)
|
|
log->Printf ("ProcessGDBRemote::%s adjusted STDIO paths for local platform (IsHost() is true) using slave: stdin=%s, stdout=%s, stderr=%s",
|
|
__FUNCTION__,
|
|
stdin_file_spec ? stdin_file_spec.GetCString() : "<null>",
|
|
stdout_file_spec ? stdout_file_spec.GetCString() : "<null>",
|
|
stderr_file_spec ? stderr_file_spec.GetCString() : "<null>");
|
|
}
|
|
|
|
if (log)
|
|
log->Printf ("ProcessGDBRemote::%s final STDIO paths after all adjustments: stdin=%s, stdout=%s, stderr=%s",
|
|
__FUNCTION__,
|
|
stdin_file_spec ? stdin_file_spec.GetCString() : "<null>",
|
|
stdout_file_spec ? stdout_file_spec.GetCString() : "<null>",
|
|
stderr_file_spec ? stderr_file_spec.GetCString() : "<null>");
|
|
|
|
if (stdin_file_spec)
|
|
m_gdb_comm.SetSTDIN(stdin_file_spec);
|
|
if (stdout_file_spec)
|
|
m_gdb_comm.SetSTDOUT(stdout_file_spec);
|
|
if (stderr_file_spec)
|
|
m_gdb_comm.SetSTDERR(stderr_file_spec);
|
|
|
|
m_gdb_comm.SetDisableASLR (launch_flags & eLaunchFlagDisableASLR);
|
|
m_gdb_comm.SetDetachOnError (launch_flags & eLaunchFlagDetachOnError);
|
|
|
|
m_gdb_comm.SendLaunchArchPacket (GetTarget().GetArchitecture().GetArchitectureName());
|
|
|
|
const char * launch_event_data = launch_info.GetLaunchEventData();
|
|
if (launch_event_data != NULL && *launch_event_data != '\0')
|
|
m_gdb_comm.SendLaunchEventDataPacket (launch_event_data);
|
|
|
|
if (working_dir)
|
|
{
|
|
m_gdb_comm.SetWorkingDir (working_dir);
|
|
}
|
|
|
|
// Send the environment and the program + arguments after we connect
|
|
const Args &environment = launch_info.GetEnvironmentEntries();
|
|
if (environment.GetArgumentCount())
|
|
{
|
|
size_t num_environment_entries = environment.GetArgumentCount();
|
|
for (size_t i=0; i<num_environment_entries; ++i)
|
|
{
|
|
const char *env_entry = environment.GetArgumentAtIndex(i);
|
|
if (env_entry == NULL || m_gdb_comm.SendEnvironmentPacket(env_entry) != 0)
|
|
break;
|
|
}
|
|
}
|
|
|
|
{
|
|
// Scope for the scoped timeout object
|
|
GDBRemoteCommunication::ScopedTimeout timeout (m_gdb_comm, 10);
|
|
|
|
int arg_packet_err = m_gdb_comm.SendArgumentsPacket (launch_info);
|
|
if (arg_packet_err == 0)
|
|
{
|
|
std::string error_str;
|
|
if (m_gdb_comm.GetLaunchSuccess (error_str))
|
|
{
|
|
SetID (m_gdb_comm.GetCurrentProcessID ());
|
|
}
|
|
else
|
|
{
|
|
error.SetErrorString (error_str.c_str());
|
|
}
|
|
}
|
|
else
|
|
{
|
|
error.SetErrorStringWithFormat("'A' packet returned an error: %i", arg_packet_err);
|
|
}
|
|
}
|
|
|
|
if (GetID() == LLDB_INVALID_PROCESS_ID)
|
|
{
|
|
if (log)
|
|
log->Printf("failed to connect to debugserver: %s", error.AsCString());
|
|
KillDebugserverProcess ();
|
|
return error;
|
|
}
|
|
|
|
StringExtractorGDBRemote response;
|
|
if (m_gdb_comm.GetStopReply(response))
|
|
{
|
|
SetLastStopPacket(response);
|
|
// '?' Packets must be handled differently in non-stop mode
|
|
if (GetTarget().GetNonStopModeEnabled())
|
|
HandleStopReplySequence();
|
|
|
|
const ArchSpec &process_arch = m_gdb_comm.GetProcessArchitecture();
|
|
|
|
if (process_arch.IsValid())
|
|
{
|
|
GetTarget().MergeArchitecture(process_arch);
|
|
}
|
|
else
|
|
{
|
|
const ArchSpec &host_arch = m_gdb_comm.GetHostArchitecture();
|
|
if (host_arch.IsValid())
|
|
GetTarget().MergeArchitecture(host_arch);
|
|
}
|
|
|
|
SetPrivateState (SetThreadStopInfo (response));
|
|
|
|
if (!disable_stdio)
|
|
{
|
|
if (pty.GetMasterFileDescriptor() != lldb_utility::PseudoTerminal::invalid_fd)
|
|
SetSTDIOFileDescriptor (pty.ReleaseMasterFileDescriptor());
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (log)
|
|
log->Printf("failed to connect to debugserver: %s", error.AsCString());
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// Set our user ID to an invalid process ID.
|
|
SetID(LLDB_INVALID_PROCESS_ID);
|
|
error.SetErrorStringWithFormat ("failed to get object file from '%s' for arch %s",
|
|
exe_module->GetFileSpec().GetFilename().AsCString(),
|
|
exe_module->GetArchitecture().GetArchitectureName());
|
|
}
|
|
return error;
|
|
|
|
}
|
|
|
|
|
|
Error
|
|
ProcessGDBRemote::ConnectToDebugserver (const char *connect_url)
|
|
{
|
|
Error error;
|
|
// Only connect if we have a valid connect URL
|
|
Log *log(ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS));
|
|
|
|
if (connect_url && connect_url[0])
|
|
{
|
|
if (log)
|
|
log->Printf("ProcessGDBRemote::%s Connecting to %s", __FUNCTION__, connect_url);
|
|
std::unique_ptr<ConnectionFileDescriptor> conn_ap(new ConnectionFileDescriptor());
|
|
if (conn_ap.get())
|
|
{
|
|
const uint32_t max_retry_count = 50;
|
|
uint32_t retry_count = 0;
|
|
while (!m_gdb_comm.IsConnected())
|
|
{
|
|
if (conn_ap->Connect(connect_url, &error) == eConnectionStatusSuccess)
|
|
{
|
|
m_gdb_comm.SetConnection (conn_ap.release());
|
|
break;
|
|
}
|
|
else if (error.WasInterrupted())
|
|
{
|
|
// If we were interrupted, don't keep retrying.
|
|
break;
|
|
}
|
|
|
|
retry_count++;
|
|
|
|
if (retry_count >= max_retry_count)
|
|
break;
|
|
|
|
usleep (100000);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!m_gdb_comm.IsConnected())
|
|
{
|
|
if (error.Success())
|
|
error.SetErrorString("not connected to remote gdb server");
|
|
return error;
|
|
}
|
|
|
|
|
|
// Start the communications read thread so all incoming data can be
|
|
// parsed into packets and queued as they arrive.
|
|
if (GetTarget().GetNonStopModeEnabled())
|
|
m_gdb_comm.StartReadThread();
|
|
|
|
// We always seem to be able to open a connection to a local port
|
|
// so we need to make sure we can then send data to it. If we can't
|
|
// then we aren't actually connected to anything, so try and do the
|
|
// handshake with the remote GDB server and make sure that goes
|
|
// alright.
|
|
if (!m_gdb_comm.HandshakeWithServer (&error))
|
|
{
|
|
m_gdb_comm.Disconnect();
|
|
if (error.Success())
|
|
error.SetErrorString("not connected to remote gdb server");
|
|
return error;
|
|
}
|
|
|
|
// Send $QNonStop:1 packet on startup if required
|
|
if (GetTarget().GetNonStopModeEnabled())
|
|
GetTarget().SetNonStopModeEnabled (m_gdb_comm.SetNonStopMode(true));
|
|
|
|
m_gdb_comm.GetEchoSupported ();
|
|
m_gdb_comm.GetThreadSuffixSupported ();
|
|
m_gdb_comm.GetListThreadsInStopReplySupported ();
|
|
m_gdb_comm.GetHostInfo ();
|
|
m_gdb_comm.GetVContSupported ('c');
|
|
m_gdb_comm.GetVAttachOrWaitSupported();
|
|
|
|
// Ask the remote server for the default thread id
|
|
if (GetTarget().GetNonStopModeEnabled())
|
|
m_gdb_comm.GetDefaultThreadId(m_initial_tid);
|
|
|
|
|
|
size_t num_cmds = GetExtraStartupCommands().GetArgumentCount();
|
|
for (size_t idx = 0; idx < num_cmds; idx++)
|
|
{
|
|
StringExtractorGDBRemote response;
|
|
m_gdb_comm.SendPacketAndWaitForResponse (GetExtraStartupCommands().GetArgumentAtIndex(idx), response, false);
|
|
}
|
|
return error;
|
|
}
|
|
|
|
void
|
|
ProcessGDBRemote::DidLaunchOrAttach (ArchSpec& process_arch)
|
|
{
|
|
Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_PROCESS));
|
|
if (log)
|
|
log->Printf ("ProcessGDBRemote::DidLaunch()");
|
|
if (GetID() != LLDB_INVALID_PROCESS_ID)
|
|
{
|
|
BuildDynamicRegisterInfo (false);
|
|
|
|
// See if the GDB server supports the qHostInfo information
|
|
|
|
|
|
// See if the GDB server supports the qProcessInfo packet, if so
|
|
// prefer that over the Host information as it will be more specific
|
|
// to our process.
|
|
|
|
const ArchSpec &remote_process_arch = m_gdb_comm.GetProcessArchitecture();
|
|
if (remote_process_arch.IsValid())
|
|
{
|
|
process_arch = remote_process_arch;
|
|
if (log)
|
|
log->Printf ("ProcessGDBRemote::%s gdb-remote had process architecture, using %s %s",
|
|
__FUNCTION__,
|
|
process_arch.GetArchitectureName () ? process_arch.GetArchitectureName () : "<null>",
|
|
process_arch.GetTriple().getTriple ().c_str() ? process_arch.GetTriple().getTriple ().c_str() : "<null>");
|
|
}
|
|
else
|
|
{
|
|
process_arch = m_gdb_comm.GetHostArchitecture();
|
|
if (log)
|
|
log->Printf ("ProcessGDBRemote::%s gdb-remote did not have process architecture, using gdb-remote host architecture %s %s",
|
|
__FUNCTION__,
|
|
process_arch.GetArchitectureName () ? process_arch.GetArchitectureName () : "<null>",
|
|
process_arch.GetTriple().getTriple ().c_str() ? process_arch.GetTriple().getTriple ().c_str() : "<null>");
|
|
}
|
|
|
|
if (process_arch.IsValid())
|
|
{
|
|
const ArchSpec &target_arch = GetTarget().GetArchitecture();
|
|
if (target_arch.IsValid())
|
|
{
|
|
if (log)
|
|
log->Printf ("ProcessGDBRemote::%s analyzing target arch, currently %s %s",
|
|
__FUNCTION__,
|
|
target_arch.GetArchitectureName () ? target_arch.GetArchitectureName () : "<null>",
|
|
target_arch.GetTriple().getTriple ().c_str() ? target_arch.GetTriple().getTriple ().c_str() : "<null>");
|
|
|
|
// If the remote host is ARM and we have apple as the vendor, then
|
|
// ARM executables and shared libraries can have mixed ARM architectures.
|
|
// You can have an armv6 executable, and if the host is armv7, then the
|
|
// system will load the best possible architecture for all shared libraries
|
|
// it has, so we really need to take the remote host architecture as our
|
|
// defacto architecture in this case.
|
|
|
|
if ((process_arch.GetMachine() == llvm::Triple::arm || process_arch.GetMachine() == llvm::Triple::thumb)
|
|
&& process_arch.GetTriple().getVendor() == llvm::Triple::Apple)
|
|
{
|
|
GetTarget().SetArchitecture (process_arch);
|
|
if (log)
|
|
log->Printf ("ProcessGDBRemote::%s remote process is ARM/Apple, setting target arch to %s %s",
|
|
__FUNCTION__,
|
|
process_arch.GetArchitectureName () ? process_arch.GetArchitectureName () : "<null>",
|
|
process_arch.GetTriple().getTriple ().c_str() ? process_arch.GetTriple().getTriple ().c_str() : "<null>");
|
|
}
|
|
else
|
|
{
|
|
// Fill in what is missing in the triple
|
|
const llvm::Triple &remote_triple = process_arch.GetTriple();
|
|
llvm::Triple new_target_triple = target_arch.GetTriple();
|
|
if (new_target_triple.getVendorName().size() == 0)
|
|
{
|
|
new_target_triple.setVendor (remote_triple.getVendor());
|
|
|
|
if (new_target_triple.getOSName().size() == 0)
|
|
{
|
|
new_target_triple.setOS (remote_triple.getOS());
|
|
|
|
if (new_target_triple.getEnvironmentName().size() == 0)
|
|
new_target_triple.setEnvironment (remote_triple.getEnvironment());
|
|
}
|
|
|
|
ArchSpec new_target_arch = target_arch;
|
|
new_target_arch.SetTriple(new_target_triple);
|
|
GetTarget().SetArchitecture(new_target_arch);
|
|
}
|
|
}
|
|
|
|
if (log)
|
|
log->Printf ("ProcessGDBRemote::%s final target arch after adjustments for remote architecture: %s %s",
|
|
__FUNCTION__,
|
|
target_arch.GetArchitectureName () ? target_arch.GetArchitectureName () : "<null>",
|
|
target_arch.GetTriple().getTriple ().c_str() ? target_arch.GetTriple().getTriple ().c_str() : "<null>");
|
|
}
|
|
else
|
|
{
|
|
// The target doesn't have a valid architecture yet, set it from
|
|
// the architecture we got from the remote GDB server
|
|
GetTarget().SetArchitecture (process_arch);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
ProcessGDBRemote::DidLaunch ()
|
|
{
|
|
ArchSpec process_arch;
|
|
DidLaunchOrAttach (process_arch);
|
|
}
|
|
|
|
Error
|
|
ProcessGDBRemote::DoAttachToProcessWithID (lldb::pid_t attach_pid, const ProcessAttachInfo &attach_info)
|
|
{
|
|
Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_PROCESS));
|
|
Error error;
|
|
|
|
if (log)
|
|
log->Printf ("ProcessGDBRemote::%s()", __FUNCTION__);
|
|
|
|
// Clear out and clean up from any current state
|
|
Clear();
|
|
if (attach_pid != LLDB_INVALID_PROCESS_ID)
|
|
{
|
|
// Make sure we aren't already connected?
|
|
if (!m_gdb_comm.IsConnected())
|
|
{
|
|
error = LaunchAndConnectToDebugserver (attach_info);
|
|
|
|
if (error.Fail())
|
|
{
|
|
const char *error_string = error.AsCString();
|
|
if (error_string == NULL)
|
|
error_string = "unable to launch " DEBUGSERVER_BASENAME;
|
|
|
|
SetExitStatus (-1, error_string);
|
|
}
|
|
}
|
|
|
|
if (error.Success())
|
|
{
|
|
m_gdb_comm.SetDetachOnError(attach_info.GetDetachOnError());
|
|
|
|
char packet[64];
|
|
const int packet_len = ::snprintf (packet, sizeof(packet), "vAttach;%" PRIx64, attach_pid);
|
|
SetID (attach_pid);
|
|
m_async_broadcaster.BroadcastEvent (eBroadcastBitAsyncContinue, new EventDataBytes (packet, packet_len));
|
|
}
|
|
}
|
|
|
|
return error;
|
|
}
|
|
|
|
Error
|
|
ProcessGDBRemote::DoAttachToProcessWithName (const char *process_name, const ProcessAttachInfo &attach_info)
|
|
{
|
|
Error error;
|
|
// Clear out and clean up from any current state
|
|
Clear();
|
|
|
|
if (process_name && process_name[0])
|
|
{
|
|
// Make sure we aren't already connected?
|
|
if (!m_gdb_comm.IsConnected())
|
|
{
|
|
error = LaunchAndConnectToDebugserver (attach_info);
|
|
|
|
if (error.Fail())
|
|
{
|
|
const char *error_string = error.AsCString();
|
|
if (error_string == NULL)
|
|
error_string = "unable to launch " DEBUGSERVER_BASENAME;
|
|
|
|
SetExitStatus (-1, error_string);
|
|
}
|
|
}
|
|
|
|
if (error.Success())
|
|
{
|
|
StreamString packet;
|
|
|
|
m_gdb_comm.SetDetachOnError(attach_info.GetDetachOnError());
|
|
|
|
if (attach_info.GetWaitForLaunch())
|
|
{
|
|
if (!m_gdb_comm.GetVAttachOrWaitSupported())
|
|
{
|
|
packet.PutCString ("vAttachWait");
|
|
}
|
|
else
|
|
{
|
|
if (attach_info.GetIgnoreExisting())
|
|
packet.PutCString("vAttachWait");
|
|
else
|
|
packet.PutCString ("vAttachOrWait");
|
|
}
|
|
}
|
|
else
|
|
packet.PutCString("vAttachName");
|
|
packet.PutChar(';');
|
|
packet.PutBytesAsRawHex8(process_name, strlen(process_name), endian::InlHostByteOrder(), endian::InlHostByteOrder());
|
|
|
|
m_async_broadcaster.BroadcastEvent (eBroadcastBitAsyncContinue, new EventDataBytes (packet.GetData(), packet.GetSize()));
|
|
|
|
}
|
|
}
|
|
return error;
|
|
}
|
|
|
|
void
|
|
ProcessGDBRemote::DidExit ()
|
|
{
|
|
// When we exit, disconnect from the GDB server communications
|
|
m_gdb_comm.Disconnect();
|
|
}
|
|
|
|
void
|
|
ProcessGDBRemote::DidAttach (ArchSpec &process_arch)
|
|
{
|
|
// If you can figure out what the architecture is, fill it in here.
|
|
process_arch.Clear();
|
|
DidLaunchOrAttach (process_arch);
|
|
}
|
|
|
|
|
|
Error
|
|
ProcessGDBRemote::WillResume ()
|
|
{
|
|
m_continue_c_tids.clear();
|
|
m_continue_C_tids.clear();
|
|
m_continue_s_tids.clear();
|
|
m_continue_S_tids.clear();
|
|
m_jstopinfo_sp.reset();
|
|
m_jthreadsinfo_sp.reset();
|
|
return Error();
|
|
}
|
|
|
|
Error
|
|
ProcessGDBRemote::DoResume ()
|
|
{
|
|
Error error;
|
|
Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_PROCESS));
|
|
if (log)
|
|
log->Printf ("ProcessGDBRemote::Resume()");
|
|
|
|
Listener listener ("gdb-remote.resume-packet-sent");
|
|
if (listener.StartListeningForEvents (&m_gdb_comm, GDBRemoteCommunication::eBroadcastBitRunPacketSent))
|
|
{
|
|
listener.StartListeningForEvents (&m_async_broadcaster, ProcessGDBRemote::eBroadcastBitAsyncThreadDidExit);
|
|
|
|
const size_t num_threads = GetThreadList().GetSize();
|
|
|
|
StreamString continue_packet;
|
|
bool continue_packet_error = false;
|
|
if (m_gdb_comm.HasAnyVContSupport ())
|
|
{
|
|
if (!GetTarget().GetNonStopModeEnabled() &&
|
|
(m_continue_c_tids.size() == num_threads ||
|
|
(m_continue_c_tids.empty() &&
|
|
m_continue_C_tids.empty() &&
|
|
m_continue_s_tids.empty() &&
|
|
m_continue_S_tids.empty())))
|
|
{
|
|
// All threads are continuing, just send a "c" packet
|
|
continue_packet.PutCString ("c");
|
|
}
|
|
else
|
|
{
|
|
continue_packet.PutCString ("vCont");
|
|
|
|
if (!m_continue_c_tids.empty())
|
|
{
|
|
if (m_gdb_comm.GetVContSupported ('c'))
|
|
{
|
|
for (tid_collection::const_iterator t_pos = m_continue_c_tids.begin(), t_end = m_continue_c_tids.end(); t_pos != t_end; ++t_pos)
|
|
continue_packet.Printf(";c:%4.4" PRIx64, *t_pos);
|
|
}
|
|
else
|
|
continue_packet_error = true;
|
|
}
|
|
|
|
if (!continue_packet_error && !m_continue_C_tids.empty())
|
|
{
|
|
if (m_gdb_comm.GetVContSupported ('C'))
|
|
{
|
|
for (tid_sig_collection::const_iterator s_pos = m_continue_C_tids.begin(), s_end = m_continue_C_tids.end(); s_pos != s_end; ++s_pos)
|
|
continue_packet.Printf(";C%2.2x:%4.4" PRIx64, s_pos->second, s_pos->first);
|
|
}
|
|
else
|
|
continue_packet_error = true;
|
|
}
|
|
|
|
if (!continue_packet_error && !m_continue_s_tids.empty())
|
|
{
|
|
if (m_gdb_comm.GetVContSupported ('s'))
|
|
{
|
|
for (tid_collection::const_iterator t_pos = m_continue_s_tids.begin(), t_end = m_continue_s_tids.end(); t_pos != t_end; ++t_pos)
|
|
continue_packet.Printf(";s:%4.4" PRIx64, *t_pos);
|
|
}
|
|
else
|
|
continue_packet_error = true;
|
|
}
|
|
|
|
if (!continue_packet_error && !m_continue_S_tids.empty())
|
|
{
|
|
if (m_gdb_comm.GetVContSupported ('S'))
|
|
{
|
|
for (tid_sig_collection::const_iterator s_pos = m_continue_S_tids.begin(), s_end = m_continue_S_tids.end(); s_pos != s_end; ++s_pos)
|
|
continue_packet.Printf(";S%2.2x:%4.4" PRIx64, s_pos->second, s_pos->first);
|
|
}
|
|
else
|
|
continue_packet_error = true;
|
|
}
|
|
|
|
if (continue_packet_error)
|
|
continue_packet.GetString().clear();
|
|
}
|
|
}
|
|
else
|
|
continue_packet_error = true;
|
|
|
|
if (continue_packet_error)
|
|
{
|
|
// Either no vCont support, or we tried to use part of the vCont
|
|
// packet that wasn't supported by the remote GDB server.
|
|
// We need to try and make a simple packet that can do our continue
|
|
const size_t num_continue_c_tids = m_continue_c_tids.size();
|
|
const size_t num_continue_C_tids = m_continue_C_tids.size();
|
|
const size_t num_continue_s_tids = m_continue_s_tids.size();
|
|
const size_t num_continue_S_tids = m_continue_S_tids.size();
|
|
if (num_continue_c_tids > 0)
|
|
{
|
|
if (num_continue_c_tids == num_threads)
|
|
{
|
|
// All threads are resuming...
|
|
m_gdb_comm.SetCurrentThreadForRun (-1);
|
|
continue_packet.PutChar ('c');
|
|
continue_packet_error = false;
|
|
}
|
|
else if (num_continue_c_tids == 1 &&
|
|
num_continue_C_tids == 0 &&
|
|
num_continue_s_tids == 0 &&
|
|
num_continue_S_tids == 0 )
|
|
{
|
|
// Only one thread is continuing
|
|
m_gdb_comm.SetCurrentThreadForRun (m_continue_c_tids.front());
|
|
continue_packet.PutChar ('c');
|
|
continue_packet_error = false;
|
|
}
|
|
}
|
|
|
|
if (continue_packet_error && num_continue_C_tids > 0)
|
|
{
|
|
if ((num_continue_C_tids + num_continue_c_tids) == num_threads &&
|
|
num_continue_C_tids > 0 &&
|
|
num_continue_s_tids == 0 &&
|
|
num_continue_S_tids == 0 )
|
|
{
|
|
const int continue_signo = m_continue_C_tids.front().second;
|
|
// Only one thread is continuing
|
|
if (num_continue_C_tids > 1)
|
|
{
|
|
// More that one thread with a signal, yet we don't have
|
|
// vCont support and we are being asked to resume each
|
|
// thread with a signal, we need to make sure they are
|
|
// all the same signal, or we can't issue the continue
|
|
// accurately with the current support...
|
|
if (num_continue_C_tids > 1)
|
|
{
|
|
continue_packet_error = false;
|
|
for (size_t i=1; i<m_continue_C_tids.size(); ++i)
|
|
{
|
|
if (m_continue_C_tids[i].second != continue_signo)
|
|
continue_packet_error = true;
|
|
}
|
|
}
|
|
if (!continue_packet_error)
|
|
m_gdb_comm.SetCurrentThreadForRun (-1);
|
|
}
|
|
else
|
|
{
|
|
// Set the continue thread ID
|
|
continue_packet_error = false;
|
|
m_gdb_comm.SetCurrentThreadForRun (m_continue_C_tids.front().first);
|
|
}
|
|
if (!continue_packet_error)
|
|
{
|
|
// Add threads continuing with the same signo...
|
|
continue_packet.Printf("C%2.2x", continue_signo);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (continue_packet_error && num_continue_s_tids > 0)
|
|
{
|
|
if (num_continue_s_tids == num_threads)
|
|
{
|
|
// All threads are resuming...
|
|
m_gdb_comm.SetCurrentThreadForRun (-1);
|
|
|
|
// If in Non-Stop-Mode use vCont when stepping
|
|
if (GetTarget().GetNonStopModeEnabled())
|
|
{
|
|
if (m_gdb_comm.GetVContSupported('s'))
|
|
continue_packet.PutCString("vCont;s");
|
|
else
|
|
continue_packet.PutChar('s');
|
|
}
|
|
else
|
|
continue_packet.PutChar('s');
|
|
|
|
continue_packet_error = false;
|
|
}
|
|
else if (num_continue_c_tids == 0 &&
|
|
num_continue_C_tids == 0 &&
|
|
num_continue_s_tids == 1 &&
|
|
num_continue_S_tids == 0 )
|
|
{
|
|
// Only one thread is stepping
|
|
m_gdb_comm.SetCurrentThreadForRun (m_continue_s_tids.front());
|
|
continue_packet.PutChar ('s');
|
|
continue_packet_error = false;
|
|
}
|
|
}
|
|
|
|
if (!continue_packet_error && num_continue_S_tids > 0)
|
|
{
|
|
if (num_continue_S_tids == num_threads)
|
|
{
|
|
const int step_signo = m_continue_S_tids.front().second;
|
|
// Are all threads trying to step with the same signal?
|
|
continue_packet_error = false;
|
|
if (num_continue_S_tids > 1)
|
|
{
|
|
for (size_t i=1; i<num_threads; ++i)
|
|
{
|
|
if (m_continue_S_tids[i].second != step_signo)
|
|
continue_packet_error = true;
|
|
}
|
|
}
|
|
if (!continue_packet_error)
|
|
{
|
|
// Add threads stepping with the same signo...
|
|
m_gdb_comm.SetCurrentThreadForRun (-1);
|
|
continue_packet.Printf("S%2.2x", step_signo);
|
|
}
|
|
}
|
|
else if (num_continue_c_tids == 0 &&
|
|
num_continue_C_tids == 0 &&
|
|
num_continue_s_tids == 0 &&
|
|
num_continue_S_tids == 1 )
|
|
{
|
|
// Only one thread is stepping with signal
|
|
m_gdb_comm.SetCurrentThreadForRun (m_continue_S_tids.front().first);
|
|
continue_packet.Printf("S%2.2x", m_continue_S_tids.front().second);
|
|
continue_packet_error = false;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (continue_packet_error)
|
|
{
|
|
error.SetErrorString ("can't make continue packet for this resume");
|
|
}
|
|
else
|
|
{
|
|
EventSP event_sp;
|
|
TimeValue timeout;
|
|
timeout = TimeValue::Now();
|
|
timeout.OffsetWithSeconds (5);
|
|
if (!m_async_thread.IsJoinable())
|
|
{
|
|
error.SetErrorString ("Trying to resume but the async thread is dead.");
|
|
if (log)
|
|
log->Printf ("ProcessGDBRemote::DoResume: Trying to resume but the async thread is dead.");
|
|
return error;
|
|
}
|
|
|
|
m_async_broadcaster.BroadcastEvent (eBroadcastBitAsyncContinue, new EventDataBytes (continue_packet.GetData(), continue_packet.GetSize()));
|
|
|
|
if (listener.WaitForEvent (&timeout, event_sp) == false)
|
|
{
|
|
error.SetErrorString("Resume timed out.");
|
|
if (log)
|
|
log->Printf ("ProcessGDBRemote::DoResume: Resume timed out.");
|
|
}
|
|
else if (event_sp->BroadcasterIs (&m_async_broadcaster))
|
|
{
|
|
error.SetErrorString ("Broadcast continue, but the async thread was killed before we got an ack back.");
|
|
if (log)
|
|
log->Printf ("ProcessGDBRemote::DoResume: Broadcast continue, but the async thread was killed before we got an ack back.");
|
|
return error;
|
|
}
|
|
}
|
|
}
|
|
|
|
return error;
|
|
}
|
|
|
|
void
|
|
ProcessGDBRemote::HandleStopReplySequence ()
|
|
{
|
|
while(true)
|
|
{
|
|
// Send vStopped
|
|
StringExtractorGDBRemote response;
|
|
m_gdb_comm.SendPacketAndWaitForResponse("vStopped", response, false);
|
|
|
|
// OK represents end of signal list
|
|
if (response.IsOKResponse())
|
|
break;
|
|
|
|
// If not OK or a normal packet we have a problem
|
|
if (!response.IsNormalResponse())
|
|
break;
|
|
|
|
SetLastStopPacket(response);
|
|
}
|
|
}
|
|
|
|
void
|
|
ProcessGDBRemote::ClearThreadIDList ()
|
|
{
|
|
Mutex::Locker locker(m_thread_list_real.GetMutex());
|
|
m_thread_ids.clear();
|
|
}
|
|
|
|
size_t
|
|
ProcessGDBRemote::UpdateThreadIDsFromStopReplyThreadsValue (std::string &value)
|
|
{
|
|
m_thread_ids.clear();
|
|
size_t comma_pos;
|
|
lldb::tid_t tid;
|
|
while ((comma_pos = value.find(',')) != std::string::npos)
|
|
{
|
|
value[comma_pos] = '\0';
|
|
// thread in big endian hex
|
|
tid = StringConvert::ToUInt64 (value.c_str(), LLDB_INVALID_THREAD_ID, 16);
|
|
if (tid != LLDB_INVALID_THREAD_ID)
|
|
m_thread_ids.push_back (tid);
|
|
value.erase(0, comma_pos + 1);
|
|
}
|
|
tid = StringConvert::ToUInt64 (value.c_str(), LLDB_INVALID_THREAD_ID, 16);
|
|
if (tid != LLDB_INVALID_THREAD_ID)
|
|
m_thread_ids.push_back (tid);
|
|
return m_thread_ids.size();
|
|
}
|
|
|
|
bool
|
|
ProcessGDBRemote::UpdateThreadIDList ()
|
|
{
|
|
Mutex::Locker locker(m_thread_list_real.GetMutex());
|
|
|
|
if (m_jthreadsinfo_sp)
|
|
{
|
|
// If we have the JSON threads info, we can get the thread list from that
|
|
StructuredData::Array *thread_infos = m_jthreadsinfo_sp->GetAsArray();
|
|
if (thread_infos && thread_infos->GetSize() > 0)
|
|
{
|
|
m_thread_ids.clear();
|
|
thread_infos->ForEach([this](StructuredData::Object* object) -> bool {
|
|
StructuredData::Dictionary *thread_dict = object->GetAsDictionary();
|
|
if (thread_dict)
|
|
{
|
|
// Set the thread stop info from the JSON dictionary
|
|
SetThreadStopInfo (thread_dict);
|
|
lldb::tid_t tid = LLDB_INVALID_THREAD_ID;
|
|
if (thread_dict->GetValueForKeyAsInteger<lldb::tid_t>("tid", tid))
|
|
m_thread_ids.push_back(tid);
|
|
}
|
|
return true; // Keep iterating through all thread_info objects
|
|
});
|
|
}
|
|
if (!m_thread_ids.empty())
|
|
return true;
|
|
}
|
|
else
|
|
{
|
|
// See if we can get the thread IDs from the current stop reply packets
|
|
// that might contain a "threads" key/value pair
|
|
|
|
// Lock the thread stack while we access it
|
|
//Mutex::Locker stop_stack_lock(m_last_stop_packet_mutex);
|
|
Mutex::Locker stop_stack_lock;
|
|
if (stop_stack_lock.TryLock(m_last_stop_packet_mutex))
|
|
{
|
|
// Get the number of stop packets on the stack
|
|
int nItems = m_stop_packet_stack.size();
|
|
// Iterate over them
|
|
for (int i = 0; i < nItems; i++)
|
|
{
|
|
// Get the thread stop info
|
|
StringExtractorGDBRemote &stop_info = m_stop_packet_stack[i];
|
|
const std::string &stop_info_str = stop_info.GetStringRef();
|
|
const size_t threads_pos = stop_info_str.find(";threads:");
|
|
if (threads_pos != std::string::npos)
|
|
{
|
|
const size_t start = threads_pos + strlen(";threads:");
|
|
const size_t end = stop_info_str.find(';', start);
|
|
if (end != std::string::npos)
|
|
{
|
|
std::string value = stop_info_str.substr(start, end - start);
|
|
if (UpdateThreadIDsFromStopReplyThreadsValue(value))
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
bool sequence_mutex_unavailable = false;
|
|
m_gdb_comm.GetCurrentThreadIDs (m_thread_ids, sequence_mutex_unavailable);
|
|
if (sequence_mutex_unavailable)
|
|
{
|
|
return false; // We just didn't get the list
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
ProcessGDBRemote::UpdateThreadList (ThreadList &old_thread_list, ThreadList &new_thread_list)
|
|
{
|
|
// locker will keep a mutex locked until it goes out of scope
|
|
Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_THREAD));
|
|
if (log && log->GetMask().Test(GDBR_LOG_VERBOSE))
|
|
log->Printf ("ProcessGDBRemote::%s (pid = %" PRIu64 ")", __FUNCTION__, GetID());
|
|
|
|
size_t num_thread_ids = m_thread_ids.size();
|
|
// The "m_thread_ids" thread ID list should always be updated after each stop
|
|
// reply packet, but in case it isn't, update it here.
|
|
if (num_thread_ids == 0)
|
|
{
|
|
if (!UpdateThreadIDList ())
|
|
return false;
|
|
num_thread_ids = m_thread_ids.size();
|
|
}
|
|
|
|
ThreadList old_thread_list_copy(old_thread_list);
|
|
if (num_thread_ids > 0)
|
|
{
|
|
for (size_t i=0; i<num_thread_ids; ++i)
|
|
{
|
|
tid_t tid = m_thread_ids[i];
|
|
ThreadSP thread_sp (old_thread_list_copy.RemoveThreadByProtocolID(tid, false));
|
|
if (!thread_sp)
|
|
{
|
|
thread_sp.reset (new ThreadGDBRemote (*this, tid));
|
|
if (log && log->GetMask().Test(GDBR_LOG_VERBOSE))
|
|
log->Printf(
|
|
"ProcessGDBRemote::%s Making new thread: %p for thread ID: 0x%" PRIx64 ".\n",
|
|
__FUNCTION__, static_cast<void*>(thread_sp.get()),
|
|
thread_sp->GetID());
|
|
}
|
|
else
|
|
{
|
|
if (log && log->GetMask().Test(GDBR_LOG_VERBOSE))
|
|
log->Printf(
|
|
"ProcessGDBRemote::%s Found old thread: %p for thread ID: 0x%" PRIx64 ".\n",
|
|
__FUNCTION__, static_cast<void*>(thread_sp.get()),
|
|
thread_sp->GetID());
|
|
}
|
|
new_thread_list.AddThread(thread_sp);
|
|
}
|
|
}
|
|
|
|
// Whatever that is left in old_thread_list_copy are not
|
|
// present in new_thread_list. Remove non-existent threads from internal id table.
|
|
size_t old_num_thread_ids = old_thread_list_copy.GetSize(false);
|
|
for (size_t i=0; i<old_num_thread_ids; i++)
|
|
{
|
|
ThreadSP old_thread_sp(old_thread_list_copy.GetThreadAtIndex (i, false));
|
|
if (old_thread_sp)
|
|
{
|
|
lldb::tid_t old_thread_id = old_thread_sp->GetProtocolID();
|
|
m_thread_id_to_index_id_map.erase(old_thread_id);
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
bool
|
|
ProcessGDBRemote::GetThreadStopInfoFromJSON (ThreadGDBRemote *thread, const StructuredData::ObjectSP &thread_infos_sp)
|
|
{
|
|
// See if we got thread stop infos for all threads via the "jThreadsInfo" packet
|
|
if (thread_infos_sp)
|
|
{
|
|
StructuredData::Array *thread_infos = thread_infos_sp->GetAsArray();
|
|
if (thread_infos)
|
|
{
|
|
lldb::tid_t tid;
|
|
const size_t n = thread_infos->GetSize();
|
|
for (size_t i=0; i<n; ++i)
|
|
{
|
|
StructuredData::Dictionary *thread_dict = thread_infos->GetItemAtIndex(i)->GetAsDictionary();
|
|
if (thread_dict)
|
|
{
|
|
if (thread_dict->GetValueForKeyAsInteger<lldb::tid_t>("tid", tid, LLDB_INVALID_THREAD_ID))
|
|
{
|
|
if (tid == thread->GetID())
|
|
return (bool)SetThreadStopInfo(thread_dict);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
ProcessGDBRemote::CalculateThreadStopInfo (ThreadGDBRemote *thread)
|
|
{
|
|
// See if we got thread stop infos for all threads via the "jThreadsInfo" packet
|
|
if (GetThreadStopInfoFromJSON (thread, m_jthreadsinfo_sp))
|
|
return true;
|
|
|
|
// See if we got thread stop info for any threads valid stop info reasons threads
|
|
// via the "jstopinfo" packet stop reply packet key/value pair?
|
|
if (m_jstopinfo_sp)
|
|
{
|
|
// If we have "jstopinfo" then we have stop descriptions for all threads
|
|
// that have stop reasons, and if there is no entry for a thread, then
|
|
// it has no stop reason.
|
|
thread->GetRegisterContext()->InvalidateIfNeeded(true);
|
|
if (!GetThreadStopInfoFromJSON (thread, m_jstopinfo_sp))
|
|
{
|
|
thread->SetStopInfo (StopInfoSP());
|
|
}
|
|
return true;
|
|
}
|
|
|
|
// Fall back to using the qThreadStopInfo packet
|
|
StringExtractorGDBRemote stop_packet;
|
|
if (GetGDBRemote().GetThreadStopInfo(thread->GetProtocolID(), stop_packet))
|
|
return SetThreadStopInfo (stop_packet) == eStateStopped;
|
|
return false;
|
|
}
|
|
|
|
|
|
ThreadSP
|
|
ProcessGDBRemote::SetThreadStopInfo (lldb::tid_t tid,
|
|
ExpeditedRegisterMap &expedited_register_map,
|
|
uint8_t signo,
|
|
const std::string &thread_name,
|
|
const std::string &reason,
|
|
const std::string &description,
|
|
uint32_t exc_type,
|
|
const std::vector<addr_t> &exc_data,
|
|
addr_t thread_dispatch_qaddr,
|
|
bool queue_vars_valid, // Set to true if queue_name, queue_kind and queue_serial are valid
|
|
std::string &queue_name,
|
|
QueueKind queue_kind,
|
|
uint64_t queue_serial)
|
|
{
|
|
ThreadSP thread_sp;
|
|
if (tid != LLDB_INVALID_THREAD_ID)
|
|
{
|
|
// Scope for "locker" below
|
|
{
|
|
// m_thread_list_real does have its own mutex, but we need to
|
|
// hold onto the mutex between the call to m_thread_list_real.FindThreadByID(...)
|
|
// and the m_thread_list_real.AddThread(...) so it doesn't change on us
|
|
Mutex::Locker locker (m_thread_list_real.GetMutex ());
|
|
thread_sp = m_thread_list_real.FindThreadByProtocolID(tid, false);
|
|
|
|
if (!thread_sp)
|
|
{
|
|
// Create the thread if we need to
|
|
thread_sp.reset (new ThreadGDBRemote (*this, tid));
|
|
m_thread_list_real.AddThread(thread_sp);
|
|
}
|
|
}
|
|
|
|
if (thread_sp)
|
|
{
|
|
ThreadGDBRemote *gdb_thread = static_cast<ThreadGDBRemote *> (thread_sp.get());
|
|
gdb_thread->GetRegisterContext()->InvalidateIfNeeded(true);
|
|
|
|
for (const auto &pair : expedited_register_map)
|
|
{
|
|
StringExtractor reg_value_extractor;
|
|
reg_value_extractor.GetStringRef() = pair.second;
|
|
gdb_thread->PrivateSetRegisterValue (pair.first, reg_value_extractor);
|
|
}
|
|
|
|
thread_sp->SetName (thread_name.empty() ? NULL : thread_name.c_str());
|
|
|
|
gdb_thread->SetThreadDispatchQAddr (thread_dispatch_qaddr);
|
|
// Check if the GDB server was able to provide the queue name, kind and serial number
|
|
if (queue_vars_valid)
|
|
gdb_thread->SetQueueInfo(std::move(queue_name), queue_kind, queue_serial);
|
|
else
|
|
gdb_thread->ClearQueueInfo();
|
|
|
|
// Make sure we update our thread stop reason just once
|
|
if (!thread_sp->StopInfoIsUpToDate())
|
|
{
|
|
thread_sp->SetStopInfo (StopInfoSP());
|
|
// If there's a memory thread backed by this thread, we need to use it to calcualte StopInfo.
|
|
ThreadSP memory_thread_sp = m_thread_list.FindThreadByProtocolID(thread_sp->GetProtocolID());
|
|
if (memory_thread_sp)
|
|
thread_sp = memory_thread_sp;
|
|
|
|
if (exc_type != 0)
|
|
{
|
|
const size_t exc_data_size = exc_data.size();
|
|
|
|
thread_sp->SetStopInfo (StopInfoMachException::CreateStopReasonWithMachException (*thread_sp,
|
|
exc_type,
|
|
exc_data_size,
|
|
exc_data_size >= 1 ? exc_data[0] : 0,
|
|
exc_data_size >= 2 ? exc_data[1] : 0,
|
|
exc_data_size >= 3 ? exc_data[2] : 0));
|
|
}
|
|
else
|
|
{
|
|
bool handled = false;
|
|
bool did_exec = false;
|
|
if (!reason.empty())
|
|
{
|
|
if (reason.compare("trace") == 0)
|
|
{
|
|
thread_sp->SetStopInfo (StopInfo::CreateStopReasonToTrace (*thread_sp));
|
|
handled = true;
|
|
}
|
|
else if (reason.compare("breakpoint") == 0)
|
|
{
|
|
addr_t pc = thread_sp->GetRegisterContext()->GetPC();
|
|
lldb::BreakpointSiteSP bp_site_sp = thread_sp->GetProcess()->GetBreakpointSiteList().FindByAddress(pc);
|
|
if (bp_site_sp)
|
|
{
|
|
// If the breakpoint is for this thread, then we'll report the hit, but if it is for another thread,
|
|
// we can just report no reason. We don't need to worry about stepping over the breakpoint here, that
|
|
// will be taken care of when the thread resumes and notices that there's a breakpoint under the pc.
|
|
handled = true;
|
|
if (bp_site_sp->ValidForThisThread (thread_sp.get()))
|
|
{
|
|
thread_sp->SetStopInfo (StopInfo::CreateStopReasonWithBreakpointSiteID (*thread_sp, bp_site_sp->GetID()));
|
|
}
|
|
else
|
|
{
|
|
StopInfoSP invalid_stop_info_sp;
|
|
thread_sp->SetStopInfo (invalid_stop_info_sp);
|
|
}
|
|
}
|
|
}
|
|
else if (reason.compare("trap") == 0)
|
|
{
|
|
// Let the trap just use the standard signal stop reason below...
|
|
}
|
|
else if (reason.compare("watchpoint") == 0)
|
|
{
|
|
StringExtractor desc_extractor(description.c_str());
|
|
addr_t wp_addr = desc_extractor.GetU64(LLDB_INVALID_ADDRESS);
|
|
uint32_t wp_index = desc_extractor.GetU32(LLDB_INVALID_INDEX32);
|
|
addr_t wp_hit_addr = desc_extractor.GetU64(LLDB_INVALID_ADDRESS);
|
|
watch_id_t watch_id = LLDB_INVALID_WATCH_ID;
|
|
if (wp_addr != LLDB_INVALID_ADDRESS)
|
|
{
|
|
if (wp_hit_addr != LLDB_INVALID_ADDRESS)
|
|
wp_addr = wp_hit_addr;
|
|
WatchpointSP wp_sp = GetTarget().GetWatchpointList().FindByAddress(wp_addr);
|
|
if (wp_sp)
|
|
{
|
|
wp_sp->SetHardwareIndex(wp_index);
|
|
watch_id = wp_sp->GetID();
|
|
}
|
|
}
|
|
if (watch_id == LLDB_INVALID_WATCH_ID)
|
|
{
|
|
Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_WATCHPOINTS));
|
|
if (log) log->Printf ("failed to find watchpoint");
|
|
}
|
|
thread_sp->SetStopInfo (StopInfo::CreateStopReasonWithWatchpointID (*thread_sp, watch_id, wp_hit_addr));
|
|
handled = true;
|
|
}
|
|
else if (reason.compare("exception") == 0)
|
|
{
|
|
thread_sp->SetStopInfo (StopInfo::CreateStopReasonWithException(*thread_sp, description.c_str()));
|
|
handled = true;
|
|
}
|
|
else if (reason.compare("exec") == 0)
|
|
{
|
|
did_exec = true;
|
|
thread_sp->SetStopInfo (StopInfo::CreateStopReasonWithExec(*thread_sp));
|
|
handled = true;
|
|
}
|
|
}
|
|
|
|
if (!handled && signo && did_exec == false)
|
|
{
|
|
if (signo == SIGTRAP)
|
|
{
|
|
// Currently we are going to assume SIGTRAP means we are either
|
|
// hitting a breakpoint or hardware single stepping.
|
|
handled = true;
|
|
addr_t pc = thread_sp->GetRegisterContext()->GetPC() + m_breakpoint_pc_offset;
|
|
lldb::BreakpointSiteSP bp_site_sp = thread_sp->GetProcess()->GetBreakpointSiteList().FindByAddress(pc);
|
|
|
|
if (bp_site_sp)
|
|
{
|
|
// If the breakpoint is for this thread, then we'll report the hit, but if it is for another thread,
|
|
// we can just report no reason. We don't need to worry about stepping over the breakpoint here, that
|
|
// will be taken care of when the thread resumes and notices that there's a breakpoint under the pc.
|
|
if (bp_site_sp->ValidForThisThread (thread_sp.get()))
|
|
{
|
|
if(m_breakpoint_pc_offset != 0)
|
|
thread_sp->GetRegisterContext()->SetPC(pc);
|
|
thread_sp->SetStopInfo (StopInfo::CreateStopReasonWithBreakpointSiteID (*thread_sp, bp_site_sp->GetID()));
|
|
}
|
|
else
|
|
{
|
|
StopInfoSP invalid_stop_info_sp;
|
|
thread_sp->SetStopInfo (invalid_stop_info_sp);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// If we were stepping then assume the stop was the result of the trace. If we were
|
|
// not stepping then report the SIGTRAP.
|
|
// FIXME: We are still missing the case where we single step over a trap instruction.
|
|
if (thread_sp->GetTemporaryResumeState() == eStateStepping)
|
|
thread_sp->SetStopInfo (StopInfo::CreateStopReasonToTrace (*thread_sp));
|
|
else
|
|
thread_sp->SetStopInfo (StopInfo::CreateStopReasonWithSignal(*thread_sp, signo, description.c_str()));
|
|
}
|
|
}
|
|
if (!handled)
|
|
thread_sp->SetStopInfo (StopInfo::CreateStopReasonWithSignal (*thread_sp, signo, description.c_str()));
|
|
}
|
|
|
|
if (!description.empty())
|
|
{
|
|
lldb::StopInfoSP stop_info_sp (thread_sp->GetStopInfo ());
|
|
if (stop_info_sp)
|
|
{
|
|
const char *stop_info_desc = stop_info_sp->GetDescription();
|
|
if (!stop_info_desc || !stop_info_desc[0])
|
|
stop_info_sp->SetDescription (description.c_str());
|
|
}
|
|
else
|
|
{
|
|
thread_sp->SetStopInfo (StopInfo::CreateStopReasonWithException (*thread_sp, description.c_str()));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return thread_sp;
|
|
}
|
|
|
|
lldb::ThreadSP
|
|
ProcessGDBRemote::SetThreadStopInfo (StructuredData::Dictionary *thread_dict)
|
|
{
|
|
static ConstString g_key_tid("tid");
|
|
static ConstString g_key_name("name");
|
|
static ConstString g_key_reason("reason");
|
|
static ConstString g_key_metype("metype");
|
|
static ConstString g_key_medata("medata");
|
|
static ConstString g_key_qaddr("qaddr");
|
|
static ConstString g_key_queue_name("qname");
|
|
static ConstString g_key_queue_kind("qkind");
|
|
static ConstString g_key_queue_serial("qserial");
|
|
static ConstString g_key_registers("registers");
|
|
static ConstString g_key_memory("memory");
|
|
static ConstString g_key_address("address");
|
|
static ConstString g_key_bytes("bytes");
|
|
static ConstString g_key_description("description");
|
|
static ConstString g_key_signal("signal");
|
|
|
|
// Stop with signal and thread info
|
|
lldb::tid_t tid = LLDB_INVALID_THREAD_ID;
|
|
uint8_t signo = 0;
|
|
std::string value;
|
|
std::string thread_name;
|
|
std::string reason;
|
|
std::string description;
|
|
uint32_t exc_type = 0;
|
|
std::vector<addr_t> exc_data;
|
|
addr_t thread_dispatch_qaddr = LLDB_INVALID_ADDRESS;
|
|
ExpeditedRegisterMap expedited_register_map;
|
|
bool queue_vars_valid = false;
|
|
std::string queue_name;
|
|
QueueKind queue_kind = eQueueKindUnknown;
|
|
uint64_t queue_serial = 0;
|
|
// Iterate through all of the thread dictionary key/value pairs from the structured data dictionary
|
|
|
|
thread_dict->ForEach([this,
|
|
&tid,
|
|
&expedited_register_map,
|
|
&thread_name,
|
|
&signo,
|
|
&reason,
|
|
&description,
|
|
&exc_type,
|
|
&exc_data,
|
|
&thread_dispatch_qaddr,
|
|
&queue_vars_valid,
|
|
&queue_name,
|
|
&queue_kind,
|
|
&queue_serial]
|
|
(ConstString key, StructuredData::Object* object) -> bool
|
|
{
|
|
if (key == g_key_tid)
|
|
{
|
|
// thread in big endian hex
|
|
tid = object->GetIntegerValue(LLDB_INVALID_THREAD_ID);
|
|
}
|
|
else if (key == g_key_metype)
|
|
{
|
|
// exception type in big endian hex
|
|
exc_type = object->GetIntegerValue(0);
|
|
}
|
|
else if (key == g_key_medata)
|
|
{
|
|
// exception data in big endian hex
|
|
StructuredData::Array *array = object->GetAsArray();
|
|
if (array)
|
|
{
|
|
array->ForEach([&exc_data](StructuredData::Object* object) -> bool {
|
|
exc_data.push_back(object->GetIntegerValue());
|
|
return true; // Keep iterating through all array items
|
|
});
|
|
}
|
|
}
|
|
else if (key == g_key_name)
|
|
{
|
|
thread_name = object->GetStringValue();
|
|
}
|
|
else if (key == g_key_qaddr)
|
|
{
|
|
thread_dispatch_qaddr = object->GetIntegerValue(LLDB_INVALID_ADDRESS);
|
|
}
|
|
else if (key == g_key_queue_name)
|
|
{
|
|
queue_vars_valid = true;
|
|
queue_name = object->GetStringValue();
|
|
}
|
|
else if (key == g_key_queue_kind)
|
|
{
|
|
std::string queue_kind_str = object->GetStringValue();
|
|
if (queue_kind_str == "serial")
|
|
{
|
|
queue_vars_valid = true;
|
|
queue_kind = eQueueKindSerial;
|
|
}
|
|
else if (queue_kind_str == "concurrent")
|
|
{
|
|
queue_vars_valid = true;
|
|
queue_kind = eQueueKindConcurrent;
|
|
}
|
|
}
|
|
else if (key == g_key_queue_serial)
|
|
{
|
|
queue_serial = object->GetIntegerValue(0);
|
|
if (queue_serial != 0)
|
|
queue_vars_valid = true;
|
|
}
|
|
else if (key == g_key_reason)
|
|
{
|
|
reason = object->GetStringValue();
|
|
}
|
|
else if (key == g_key_description)
|
|
{
|
|
description = object->GetStringValue();
|
|
}
|
|
else if (key == g_key_registers)
|
|
{
|
|
StructuredData::Dictionary *registers_dict = object->GetAsDictionary();
|
|
|
|
if (registers_dict)
|
|
{
|
|
registers_dict->ForEach([&expedited_register_map](ConstString key, StructuredData::Object* object) -> bool {
|
|
const uint32_t reg = StringConvert::ToUInt32 (key.GetCString(), UINT32_MAX, 10);
|
|
if (reg != UINT32_MAX)
|
|
expedited_register_map[reg] = object->GetStringValue();
|
|
return true; // Keep iterating through all array items
|
|
});
|
|
}
|
|
}
|
|
else if (key == g_key_memory)
|
|
{
|
|
StructuredData::Array *array = object->GetAsArray();
|
|
if (array)
|
|
{
|
|
array->ForEach([this](StructuredData::Object* object) -> bool {
|
|
StructuredData::Dictionary *mem_cache_dict = object->GetAsDictionary();
|
|
if (mem_cache_dict)
|
|
{
|
|
lldb::addr_t mem_cache_addr = LLDB_INVALID_ADDRESS;
|
|
if (mem_cache_dict->GetValueForKeyAsInteger<lldb::addr_t>("address", mem_cache_addr))
|
|
{
|
|
if (mem_cache_addr != LLDB_INVALID_ADDRESS)
|
|
{
|
|
StringExtractor bytes;
|
|
if (mem_cache_dict->GetValueForKeyAsString("bytes", bytes.GetStringRef()))
|
|
{
|
|
bytes.SetFilePos(0);
|
|
|
|
const size_t byte_size = bytes.GetStringRef().size()/2;
|
|
DataBufferSP data_buffer_sp(new DataBufferHeap(byte_size, 0));
|
|
const size_t bytes_copied = bytes.GetHexBytes (data_buffer_sp->GetBytes(), byte_size, 0);
|
|
if (bytes_copied == byte_size)
|
|
m_memory_cache.AddL1CacheData(mem_cache_addr, data_buffer_sp);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return true; // Keep iterating through all array items
|
|
});
|
|
}
|
|
|
|
}
|
|
else if (key == g_key_signal)
|
|
signo = object->GetIntegerValue(LLDB_INVALID_SIGNAL_NUMBER);
|
|
return true; // Keep iterating through all dictionary key/value pairs
|
|
});
|
|
|
|
return SetThreadStopInfo (tid,
|
|
expedited_register_map,
|
|
signo,
|
|
thread_name,
|
|
reason,
|
|
description,
|
|
exc_type,
|
|
exc_data,
|
|
thread_dispatch_qaddr,
|
|
queue_vars_valid,
|
|
queue_name,
|
|
queue_kind,
|
|
queue_serial);
|
|
}
|
|
|
|
StateType
|
|
ProcessGDBRemote::SetThreadStopInfo (StringExtractor& stop_packet)
|
|
{
|
|
stop_packet.SetFilePos (0);
|
|
const char stop_type = stop_packet.GetChar();
|
|
switch (stop_type)
|
|
{
|
|
case 'T':
|
|
case 'S':
|
|
{
|
|
// This is a bit of a hack, but is is required. If we did exec, we
|
|
// need to clear our thread lists and also know to rebuild our dynamic
|
|
// register info before we lookup and threads and populate the expedited
|
|
// register values so we need to know this right away so we can cleanup
|
|
// and update our registers.
|
|
const uint32_t stop_id = GetStopID();
|
|
if (stop_id == 0)
|
|
{
|
|
// Our first stop, make sure we have a process ID, and also make
|
|
// sure we know about our registers
|
|
if (GetID() == LLDB_INVALID_PROCESS_ID)
|
|
{
|
|
lldb::pid_t pid = m_gdb_comm.GetCurrentProcessID ();
|
|
if (pid != LLDB_INVALID_PROCESS_ID)
|
|
SetID (pid);
|
|
}
|
|
BuildDynamicRegisterInfo (true);
|
|
}
|
|
// Stop with signal and thread info
|
|
lldb::tid_t tid = LLDB_INVALID_THREAD_ID;
|
|
const uint8_t signo = stop_packet.GetHexU8();
|
|
std::string key;
|
|
std::string value;
|
|
std::string thread_name;
|
|
std::string reason;
|
|
std::string description;
|
|
uint32_t exc_type = 0;
|
|
std::vector<addr_t> exc_data;
|
|
addr_t thread_dispatch_qaddr = LLDB_INVALID_ADDRESS;
|
|
bool queue_vars_valid = false; // says if locals below that start with "queue_" are valid
|
|
std::string queue_name;
|
|
QueueKind queue_kind = eQueueKindUnknown;
|
|
uint64_t queue_serial = 0;
|
|
ExpeditedRegisterMap expedited_register_map;
|
|
while (stop_packet.GetNameColonValue(key, value))
|
|
{
|
|
if (key.compare("metype") == 0)
|
|
{
|
|
// exception type in big endian hex
|
|
exc_type = StringConvert::ToUInt32 (value.c_str(), 0, 16);
|
|
}
|
|
else if (key.compare("medata") == 0)
|
|
{
|
|
// exception data in big endian hex
|
|
exc_data.push_back(StringConvert::ToUInt64 (value.c_str(), 0, 16));
|
|
}
|
|
else if (key.compare("thread") == 0)
|
|
{
|
|
// thread in big endian hex
|
|
tid = StringConvert::ToUInt64 (value.c_str(), LLDB_INVALID_THREAD_ID, 16);
|
|
}
|
|
else if (key.compare("threads") == 0)
|
|
{
|
|
Mutex::Locker locker(m_thread_list_real.GetMutex());
|
|
m_thread_ids.clear();
|
|
// A comma separated list of all threads in the current
|
|
// process that includes the thread for this stop reply
|
|
// packet
|
|
size_t comma_pos;
|
|
lldb::tid_t tid;
|
|
while ((comma_pos = value.find(',')) != std::string::npos)
|
|
{
|
|
value[comma_pos] = '\0';
|
|
// thread in big endian hex
|
|
tid = StringConvert::ToUInt64 (value.c_str(), LLDB_INVALID_THREAD_ID, 16);
|
|
if (tid != LLDB_INVALID_THREAD_ID)
|
|
m_thread_ids.push_back (tid);
|
|
value.erase(0, comma_pos + 1);
|
|
}
|
|
tid = StringConvert::ToUInt64 (value.c_str(), LLDB_INVALID_THREAD_ID, 16);
|
|
if (tid != LLDB_INVALID_THREAD_ID)
|
|
m_thread_ids.push_back (tid);
|
|
}
|
|
else if (key.compare("jstopinfo") == 0)
|
|
{
|
|
StringExtractor json_extractor;
|
|
// Swap "value" over into "name_extractor"
|
|
json_extractor.GetStringRef().swap(value);
|
|
// Now convert the HEX bytes into a string value
|
|
json_extractor.GetHexByteString (value);
|
|
|
|
// This JSON contains thread IDs and thread stop info for all threads.
|
|
// It doesn't contain expedited registers, memory or queue info.
|
|
m_jstopinfo_sp = StructuredData::ParseJSON (value);
|
|
}
|
|
else if (key.compare("hexname") == 0)
|
|
{
|
|
StringExtractor name_extractor;
|
|
// Swap "value" over into "name_extractor"
|
|
name_extractor.GetStringRef().swap(value);
|
|
// Now convert the HEX bytes into a string value
|
|
name_extractor.GetHexByteString (value);
|
|
thread_name.swap (value);
|
|
}
|
|
else if (key.compare("name") == 0)
|
|
{
|
|
thread_name.swap (value);
|
|
}
|
|
else if (key.compare("qaddr") == 0)
|
|
{
|
|
thread_dispatch_qaddr = StringConvert::ToUInt64 (value.c_str(), 0, 16);
|
|
}
|
|
else if (key.compare("qname") == 0)
|
|
{
|
|
queue_vars_valid = true;
|
|
StringExtractor name_extractor;
|
|
// Swap "value" over into "name_extractor"
|
|
name_extractor.GetStringRef().swap(value);
|
|
// Now convert the HEX bytes into a string value
|
|
name_extractor.GetHexByteString (value);
|
|
queue_name.swap (value);
|
|
}
|
|
else if (key.compare("qkind") == 0)
|
|
{
|
|
if (value == "serial")
|
|
{
|
|
queue_vars_valid = true;
|
|
queue_kind = eQueueKindSerial;
|
|
}
|
|
else if (value == "concurrent")
|
|
{
|
|
queue_vars_valid = true;
|
|
queue_kind = eQueueKindConcurrent;
|
|
}
|
|
}
|
|
else if (key.compare("qserial") == 0)
|
|
{
|
|
queue_serial = StringConvert::ToUInt64 (value.c_str(), 0, 0);
|
|
if (queue_serial != 0)
|
|
queue_vars_valid = true;
|
|
}
|
|
else if (key.compare("reason") == 0)
|
|
{
|
|
reason.swap(value);
|
|
}
|
|
else if (key.compare("description") == 0)
|
|
{
|
|
StringExtractor desc_extractor;
|
|
// Swap "value" over into "name_extractor"
|
|
desc_extractor.GetStringRef().swap(value);
|
|
// Now convert the HEX bytes into a string value
|
|
desc_extractor.GetHexByteString (value);
|
|
description.swap(value);
|
|
}
|
|
else if (key.compare("memory") == 0)
|
|
{
|
|
// Expedited memory. GDB servers can choose to send back expedited memory
|
|
// that can populate the L1 memory cache in the process so that things like
|
|
// the frame pointer backchain can be expedited. This will help stack
|
|
// backtracing be more efficient by not having to send as many memory read
|
|
// requests down the remote GDB server.
|
|
|
|
// Key/value pair format: memory:<addr>=<bytes>;
|
|
// <addr> is a number whose base will be interpreted by the prefix:
|
|
// "0x[0-9a-fA-F]+" for hex
|
|
// "0[0-7]+" for octal
|
|
// "[1-9]+" for decimal
|
|
// <bytes> is native endian ASCII hex bytes just like the register values
|
|
llvm::StringRef value_ref(value);
|
|
std::pair<llvm::StringRef, llvm::StringRef> pair;
|
|
pair = value_ref.split('=');
|
|
if (!pair.first.empty() && !pair.second.empty())
|
|
{
|
|
std::string addr_str(pair.first.str());
|
|
const lldb::addr_t mem_cache_addr = StringConvert::ToUInt64(addr_str.c_str(), LLDB_INVALID_ADDRESS, 0);
|
|
if (mem_cache_addr != LLDB_INVALID_ADDRESS)
|
|
{
|
|
StringExtractor bytes;
|
|
bytes.GetStringRef() = pair.second.str();
|
|
const size_t byte_size = bytes.GetStringRef().size()/2;
|
|
DataBufferSP data_buffer_sp(new DataBufferHeap(byte_size, 0));
|
|
const size_t bytes_copied = bytes.GetHexBytes (data_buffer_sp->GetBytes(), byte_size, 0);
|
|
if (bytes_copied == byte_size)
|
|
m_memory_cache.AddL1CacheData(mem_cache_addr, data_buffer_sp);
|
|
}
|
|
}
|
|
}
|
|
else if (key.compare("watch") == 0 || key.compare("rwatch") == 0 || key.compare("awatch") == 0)
|
|
{
|
|
// Support standard GDB remote stop reply packet 'TAAwatch:addr'
|
|
lldb::addr_t wp_addr = StringConvert::ToUInt64 (value.c_str(), LLDB_INVALID_ADDRESS, 16);
|
|
WatchpointSP wp_sp = GetTarget().GetWatchpointList().FindByAddress(wp_addr);
|
|
uint32_t wp_index = LLDB_INVALID_INDEX32;
|
|
|
|
if (wp_sp)
|
|
wp_index = wp_sp->GetHardwareIndex();
|
|
|
|
reason = "watchpoint";
|
|
StreamString ostr;
|
|
ostr.Printf("%" PRIu64 " %" PRIu32, wp_addr, wp_index);
|
|
description = ostr.GetString().c_str();
|
|
}
|
|
else if (key.compare("library") == 0)
|
|
{
|
|
LoadModules();
|
|
}
|
|
else if (key.size() == 2 && ::isxdigit(key[0]) && ::isxdigit(key[1]))
|
|
{
|
|
uint32_t reg = StringConvert::ToUInt32 (key.c_str(), UINT32_MAX, 16);
|
|
if (reg != UINT32_MAX)
|
|
expedited_register_map[reg] = std::move(value);
|
|
}
|
|
}
|
|
|
|
if (tid == LLDB_INVALID_THREAD_ID)
|
|
{
|
|
// A thread id may be invalid if the response is old style 'S' packet which does not provide the
|
|
// thread information. So update the thread list and choose the first one.
|
|
UpdateThreadIDList ();
|
|
|
|
if (!m_thread_ids.empty ())
|
|
{
|
|
tid = m_thread_ids.front ();
|
|
}
|
|
}
|
|
|
|
ThreadSP thread_sp = SetThreadStopInfo (tid,
|
|
expedited_register_map,
|
|
signo,
|
|
thread_name,
|
|
reason,
|
|
description,
|
|
exc_type,
|
|
exc_data,
|
|
thread_dispatch_qaddr,
|
|
queue_vars_valid,
|
|
queue_name,
|
|
queue_kind,
|
|
queue_serial);
|
|
|
|
return eStateStopped;
|
|
}
|
|
break;
|
|
|
|
case 'W':
|
|
case 'X':
|
|
// process exited
|
|
return eStateExited;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
return eStateInvalid;
|
|
}
|
|
|
|
void
|
|
ProcessGDBRemote::RefreshStateAfterStop ()
|
|
{
|
|
Mutex::Locker locker(m_thread_list_real.GetMutex());
|
|
m_thread_ids.clear();
|
|
// Set the thread stop info. It might have a "threads" key whose value is
|
|
// a list of all thread IDs in the current process, so m_thread_ids might
|
|
// get set.
|
|
|
|
// Scope for the lock
|
|
{
|
|
// Lock the thread stack while we access it
|
|
Mutex::Locker stop_stack_lock(m_last_stop_packet_mutex);
|
|
// Get the number of stop packets on the stack
|
|
int nItems = m_stop_packet_stack.size();
|
|
// Iterate over them
|
|
for (int i = 0; i < nItems; i++)
|
|
{
|
|
// Get the thread stop info
|
|
StringExtractorGDBRemote stop_info = m_stop_packet_stack[i];
|
|
// Process thread stop info
|
|
SetThreadStopInfo(stop_info);
|
|
}
|
|
// Clear the thread stop stack
|
|
m_stop_packet_stack.clear();
|
|
}
|
|
|
|
// Check to see if SetThreadStopInfo() filled in m_thread_ids?
|
|
if (m_thread_ids.empty())
|
|
{
|
|
// No, we need to fetch the thread list manually
|
|
UpdateThreadIDList();
|
|
}
|
|
|
|
// If we have queried for a default thread id
|
|
if (m_initial_tid != LLDB_INVALID_THREAD_ID)
|
|
{
|
|
m_thread_list.SetSelectedThreadByID(m_initial_tid);
|
|
m_initial_tid = LLDB_INVALID_THREAD_ID;
|
|
}
|
|
|
|
// Let all threads recover from stopping and do any clean up based
|
|
// on the previous thread state (if any).
|
|
m_thread_list_real.RefreshStateAfterStop();
|
|
|
|
}
|
|
|
|
Error
|
|
ProcessGDBRemote::DoHalt (bool &caused_stop)
|
|
{
|
|
Error error;
|
|
|
|
bool timed_out = false;
|
|
Mutex::Locker locker;
|
|
|
|
if (m_public_state.GetValue() == eStateAttaching)
|
|
{
|
|
// We are being asked to halt during an attach. We need to just close
|
|
// our file handle and debugserver will go away, and we can be done...
|
|
m_gdb_comm.Disconnect();
|
|
}
|
|
else
|
|
{
|
|
if (!m_gdb_comm.SendInterrupt (locker, 2, timed_out))
|
|
{
|
|
if (timed_out)
|
|
error.SetErrorString("timed out sending interrupt packet");
|
|
else
|
|
error.SetErrorString("unknown error sending interrupt packet");
|
|
}
|
|
|
|
caused_stop = m_gdb_comm.GetInterruptWasSent ();
|
|
}
|
|
return error;
|
|
}
|
|
|
|
Error
|
|
ProcessGDBRemote::DoDetach(bool keep_stopped)
|
|
{
|
|
Error error;
|
|
Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS));
|
|
if (log)
|
|
log->Printf ("ProcessGDBRemote::DoDetach(keep_stopped: %i)", keep_stopped);
|
|
|
|
error = m_gdb_comm.Detach (keep_stopped);
|
|
if (log)
|
|
{
|
|
if (error.Success())
|
|
log->PutCString ("ProcessGDBRemote::DoDetach() detach packet sent successfully");
|
|
else
|
|
log->Printf ("ProcessGDBRemote::DoDetach() detach packet send failed: %s", error.AsCString() ? error.AsCString() : "<unknown error>");
|
|
}
|
|
|
|
if (!error.Success())
|
|
return error;
|
|
|
|
// Sleep for one second to let the process get all detached...
|
|
StopAsyncThread ();
|
|
|
|
SetPrivateState (eStateDetached);
|
|
ResumePrivateStateThread();
|
|
|
|
//KillDebugserverProcess ();
|
|
return error;
|
|
}
|
|
|
|
|
|
Error
|
|
ProcessGDBRemote::DoDestroy ()
|
|
{
|
|
Error error;
|
|
Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS));
|
|
if (log)
|
|
log->Printf ("ProcessGDBRemote::DoDestroy()");
|
|
|
|
// There is a bug in older iOS debugservers where they don't shut down the process
|
|
// they are debugging properly. If the process is sitting at a breakpoint or an exception,
|
|
// this can cause problems with restarting. So we check to see if any of our threads are stopped
|
|
// at a breakpoint, and if so we remove all the breakpoints, resume the process, and THEN
|
|
// destroy it again.
|
|
//
|
|
// Note, we don't have a good way to test the version of debugserver, but I happen to know that
|
|
// the set of all the iOS debugservers which don't support GetThreadSuffixSupported() and that of
|
|
// the debugservers with this bug are equal. There really should be a better way to test this!
|
|
//
|
|
// We also use m_destroy_tried_resuming to make sure we only do this once, if we resume and then halt and
|
|
// get called here to destroy again and we're still at a breakpoint or exception, then we should
|
|
// just do the straight-forward kill.
|
|
//
|
|
// And of course, if we weren't able to stop the process by the time we get here, it isn't
|
|
// necessary (or helpful) to do any of this.
|
|
|
|
if (!m_gdb_comm.GetThreadSuffixSupported() && m_public_state.GetValue() != eStateRunning)
|
|
{
|
|
PlatformSP platform_sp = GetTarget().GetPlatform();
|
|
|
|
// FIXME: These should be ConstStrings so we aren't doing strcmp'ing.
|
|
if (platform_sp
|
|
&& platform_sp->GetName()
|
|
&& platform_sp->GetName() == PlatformRemoteiOS::GetPluginNameStatic())
|
|
{
|
|
if (m_destroy_tried_resuming)
|
|
{
|
|
if (log)
|
|
log->PutCString ("ProcessGDBRemote::DoDestroy() - Tried resuming to destroy once already, not doing it again.");
|
|
}
|
|
else
|
|
{
|
|
// At present, the plans are discarded and the breakpoints disabled Process::Destroy,
|
|
// but we really need it to happen here and it doesn't matter if we do it twice.
|
|
m_thread_list.DiscardThreadPlans();
|
|
DisableAllBreakpointSites();
|
|
|
|
bool stop_looks_like_crash = false;
|
|
ThreadList &threads = GetThreadList();
|
|
|
|
{
|
|
Mutex::Locker locker(threads.GetMutex());
|
|
|
|
size_t num_threads = threads.GetSize();
|
|
for (size_t i = 0; i < num_threads; i++)
|
|
{
|
|
ThreadSP thread_sp = threads.GetThreadAtIndex(i);
|
|
StopInfoSP stop_info_sp = thread_sp->GetPrivateStopInfo();
|
|
StopReason reason = eStopReasonInvalid;
|
|
if (stop_info_sp)
|
|
reason = stop_info_sp->GetStopReason();
|
|
if (reason == eStopReasonBreakpoint
|
|
|| reason == eStopReasonException)
|
|
{
|
|
if (log)
|
|
log->Printf ("ProcessGDBRemote::DoDestroy() - thread: 0x%4.4" PRIx64 " stopped with reason: %s.",
|
|
thread_sp->GetProtocolID(),
|
|
stop_info_sp->GetDescription());
|
|
stop_looks_like_crash = true;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (stop_looks_like_crash)
|
|
{
|
|
if (log)
|
|
log->PutCString ("ProcessGDBRemote::DoDestroy() - Stopped at a breakpoint, continue and then kill.");
|
|
m_destroy_tried_resuming = true;
|
|
|
|
// If we are going to run again before killing, it would be good to suspend all the threads
|
|
// before resuming so they won't get into more trouble. Sadly, for the threads stopped with
|
|
// the breakpoint or exception, the exception doesn't get cleared if it is suspended, so we do
|
|
// have to run the risk of letting those threads proceed a bit.
|
|
|
|
{
|
|
Mutex::Locker locker(threads.GetMutex());
|
|
|
|
size_t num_threads = threads.GetSize();
|
|
for (size_t i = 0; i < num_threads; i++)
|
|
{
|
|
ThreadSP thread_sp = threads.GetThreadAtIndex(i);
|
|
StopInfoSP stop_info_sp = thread_sp->GetPrivateStopInfo();
|
|
StopReason reason = eStopReasonInvalid;
|
|
if (stop_info_sp)
|
|
reason = stop_info_sp->GetStopReason();
|
|
if (reason != eStopReasonBreakpoint
|
|
&& reason != eStopReasonException)
|
|
{
|
|
if (log)
|
|
log->Printf ("ProcessGDBRemote::DoDestroy() - Suspending thread: 0x%4.4" PRIx64 " before running.",
|
|
thread_sp->GetProtocolID());
|
|
thread_sp->SetResumeState(eStateSuspended);
|
|
}
|
|
}
|
|
}
|
|
Resume ();
|
|
return Destroy(false);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Interrupt if our inferior is running...
|
|
int exit_status = SIGABRT;
|
|
std::string exit_string;
|
|
|
|
if (m_gdb_comm.IsConnected())
|
|
{
|
|
if (m_public_state.GetValue() != eStateAttaching)
|
|
{
|
|
StringExtractorGDBRemote response;
|
|
bool send_async = true;
|
|
GDBRemoteCommunication::ScopedTimeout (m_gdb_comm, 3);
|
|
|
|
if (m_gdb_comm.SendPacketAndWaitForResponse("k", 1, response, send_async) == GDBRemoteCommunication::PacketResult::Success)
|
|
{
|
|
char packet_cmd = response.GetChar(0);
|
|
|
|
if (packet_cmd == 'W' || packet_cmd == 'X')
|
|
{
|
|
#if defined(__APPLE__)
|
|
// For Native processes on Mac OS X, we launch through the Host Platform, then hand the process off
|
|
// to debugserver, which becomes the parent process through "PT_ATTACH". Then when we go to kill
|
|
// the process on Mac OS X we call ptrace(PT_KILL) to kill it, then we call waitpid which returns
|
|
// with no error and the correct status. But amusingly enough that doesn't seem to actually reap
|
|
// the process, but instead it is left around as a Zombie. Probably the kernel is in the process of
|
|
// switching ownership back to lldb which was the original parent, and gets confused in the handoff.
|
|
// Anyway, so call waitpid here to finally reap it.
|
|
PlatformSP platform_sp(GetTarget().GetPlatform());
|
|
if (platform_sp && platform_sp->IsHost())
|
|
{
|
|
int status;
|
|
::pid_t reap_pid;
|
|
reap_pid = waitpid (GetID(), &status, WNOHANG);
|
|
if (log)
|
|
log->Printf ("Reaped pid: %d, status: %d.\n", reap_pid, status);
|
|
}
|
|
#endif
|
|
SetLastStopPacket (response);
|
|
ClearThreadIDList ();
|
|
exit_status = response.GetHexU8();
|
|
}
|
|
else
|
|
{
|
|
if (log)
|
|
log->Printf ("ProcessGDBRemote::DoDestroy - got unexpected response to k packet: %s", response.GetStringRef().c_str());
|
|
exit_string.assign("got unexpected response to k packet: ");
|
|
exit_string.append(response.GetStringRef());
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (log)
|
|
log->Printf ("ProcessGDBRemote::DoDestroy - failed to send k packet");
|
|
exit_string.assign("failed to send the k packet");
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (log)
|
|
log->Printf ("ProcessGDBRemote::DoDestroy - killed or interrupted while attaching");
|
|
exit_string.assign ("killed or interrupted while attaching.");
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// If we missed setting the exit status on the way out, do it here.
|
|
// NB set exit status can be called multiple times, the first one sets the status.
|
|
exit_string.assign("destroying when not connected to debugserver");
|
|
}
|
|
|
|
SetExitStatus(exit_status, exit_string.c_str());
|
|
|
|
StopAsyncThread ();
|
|
KillDebugserverProcess ();
|
|
return error;
|
|
}
|
|
|
|
void
|
|
ProcessGDBRemote::SetLastStopPacket (const StringExtractorGDBRemote &response)
|
|
{
|
|
const bool did_exec = response.GetStringRef().find(";reason:exec;") != std::string::npos;
|
|
if (did_exec)
|
|
{
|
|
Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS));
|
|
if (log)
|
|
log->Printf ("ProcessGDBRemote::SetLastStopPacket () - detected exec");
|
|
|
|
m_thread_list_real.Clear();
|
|
m_thread_list.Clear();
|
|
BuildDynamicRegisterInfo (true);
|
|
m_gdb_comm.ResetDiscoverableSettings (did_exec);
|
|
}
|
|
|
|
// Scope the lock
|
|
{
|
|
// Lock the thread stack while we access it
|
|
Mutex::Locker stop_stack_lock(m_last_stop_packet_mutex);
|
|
|
|
// We are are not using non-stop mode, there can only be one last stop
|
|
// reply packet, so clear the list.
|
|
if (GetTarget().GetNonStopModeEnabled() == false)
|
|
m_stop_packet_stack.clear();
|
|
|
|
// Add this stop packet to the stop packet stack
|
|
// This stack will get popped and examined when we switch to the
|
|
// Stopped state
|
|
m_stop_packet_stack.push_back(response);
|
|
}
|
|
}
|
|
|
|
void
|
|
ProcessGDBRemote::SetUnixSignals(const UnixSignalsSP &signals_sp)
|
|
{
|
|
Process::SetUnixSignals(std::make_shared<GDBRemoteSignals>(signals_sp));
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
// Process Queries
|
|
//------------------------------------------------------------------
|
|
|
|
bool
|
|
ProcessGDBRemote::IsAlive ()
|
|
{
|
|
return m_gdb_comm.IsConnected() && Process::IsAlive();
|
|
}
|
|
|
|
addr_t
|
|
ProcessGDBRemote::GetImageInfoAddress()
|
|
{
|
|
// request the link map address via the $qShlibInfoAddr packet
|
|
lldb::addr_t addr = m_gdb_comm.GetShlibInfoAddr();
|
|
|
|
// the loaded module list can also provides a link map address
|
|
if (addr == LLDB_INVALID_ADDRESS)
|
|
{
|
|
GDBLoadedModuleInfoList list;
|
|
if (GetLoadedModuleList (list).Success())
|
|
addr = list.m_link_map;
|
|
}
|
|
|
|
return addr;
|
|
}
|
|
|
|
void
|
|
ProcessGDBRemote::WillPublicStop ()
|
|
{
|
|
// See if the GDB remote client supports the JSON threads info.
|
|
// If so, we gather stop info for all threads, expedited registers,
|
|
// expedited memory, runtime queue information (iOS and MacOSX only),
|
|
// and more. Expediting memory will help stack backtracing be much
|
|
// faster. Expediting registers will make sure we don't have to read
|
|
// the thread registers for GPRs.
|
|
m_jthreadsinfo_sp = m_gdb_comm.GetThreadsInfo();
|
|
|
|
if (m_jthreadsinfo_sp)
|
|
{
|
|
// Now set the stop info for each thread and also expedite any registers
|
|
// and memory that was in the jThreadsInfo response.
|
|
StructuredData::Array *thread_infos = m_jthreadsinfo_sp->GetAsArray();
|
|
if (thread_infos)
|
|
{
|
|
const size_t n = thread_infos->GetSize();
|
|
for (size_t i=0; i<n; ++i)
|
|
{
|
|
StructuredData::Dictionary *thread_dict = thread_infos->GetItemAtIndex(i)->GetAsDictionary();
|
|
if (thread_dict)
|
|
SetThreadStopInfo(thread_dict);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
// Process Memory
|
|
//------------------------------------------------------------------
|
|
size_t
|
|
ProcessGDBRemote::DoReadMemory (addr_t addr, void *buf, size_t size, Error &error)
|
|
{
|
|
GetMaxMemorySize ();
|
|
if (size > m_max_memory_size)
|
|
{
|
|
// Keep memory read sizes down to a sane limit. This function will be
|
|
// called multiple times in order to complete the task by
|
|
// lldb_private::Process so it is ok to do this.
|
|
size = m_max_memory_size;
|
|
}
|
|
|
|
char packet[64];
|
|
int packet_len;
|
|
bool binary_memory_read = m_gdb_comm.GetxPacketSupported();
|
|
packet_len = ::snprintf(packet, sizeof(packet), "%c%" PRIx64 ",%" PRIx64,
|
|
binary_memory_read ? 'x' : 'm', (uint64_t)addr, (uint64_t)size);
|
|
assert (packet_len + 1 < (int)sizeof(packet));
|
|
StringExtractorGDBRemote response;
|
|
if (m_gdb_comm.SendPacketAndWaitForResponse(packet, packet_len, response, true) == GDBRemoteCommunication::PacketResult::Success)
|
|
{
|
|
if (response.IsNormalResponse())
|
|
{
|
|
error.Clear();
|
|
if (binary_memory_read)
|
|
{
|
|
// The lower level GDBRemoteCommunication packet receive layer has already de-quoted any
|
|
// 0x7d character escaping that was present in the packet
|
|
|
|
size_t data_received_size = response.GetBytesLeft();
|
|
if (data_received_size > size)
|
|
{
|
|
// Don't write past the end of BUF if the remote debug server gave us too
|
|
// much data for some reason.
|
|
data_received_size = size;
|
|
}
|
|
memcpy (buf, response.GetStringRef().data(), data_received_size);
|
|
return data_received_size;
|
|
}
|
|
else
|
|
{
|
|
return response.GetHexBytes(buf, size, '\xdd');
|
|
}
|
|
}
|
|
else if (response.IsErrorResponse())
|
|
error.SetErrorStringWithFormat("memory read failed for 0x%" PRIx64, addr);
|
|
else if (response.IsUnsupportedResponse())
|
|
error.SetErrorStringWithFormat("GDB server does not support reading memory");
|
|
else
|
|
error.SetErrorStringWithFormat("unexpected response to GDB server memory read packet '%s': '%s'", packet, response.GetStringRef().c_str());
|
|
}
|
|
else
|
|
{
|
|
error.SetErrorStringWithFormat("failed to send packet: '%s'", packet);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
size_t
|
|
ProcessGDBRemote::DoWriteMemory (addr_t addr, const void *buf, size_t size, Error &error)
|
|
{
|
|
GetMaxMemorySize ();
|
|
if (size > m_max_memory_size)
|
|
{
|
|
// Keep memory read sizes down to a sane limit. This function will be
|
|
// called multiple times in order to complete the task by
|
|
// lldb_private::Process so it is ok to do this.
|
|
size = m_max_memory_size;
|
|
}
|
|
|
|
StreamString packet;
|
|
packet.Printf("M%" PRIx64 ",%" PRIx64 ":", addr, (uint64_t)size);
|
|
packet.PutBytesAsRawHex8(buf, size, endian::InlHostByteOrder(), endian::InlHostByteOrder());
|
|
StringExtractorGDBRemote response;
|
|
if (m_gdb_comm.SendPacketAndWaitForResponse(packet.GetData(), packet.GetSize(), response, true) == GDBRemoteCommunication::PacketResult::Success)
|
|
{
|
|
if (response.IsOKResponse())
|
|
{
|
|
error.Clear();
|
|
return size;
|
|
}
|
|
else if (response.IsErrorResponse())
|
|
error.SetErrorStringWithFormat("memory write failed for 0x%" PRIx64, addr);
|
|
else if (response.IsUnsupportedResponse())
|
|
error.SetErrorStringWithFormat("GDB server does not support writing memory");
|
|
else
|
|
error.SetErrorStringWithFormat("unexpected response to GDB server memory write packet '%s': '%s'", packet.GetString().c_str(), response.GetStringRef().c_str());
|
|
}
|
|
else
|
|
{
|
|
error.SetErrorStringWithFormat("failed to send packet: '%s'", packet.GetString().c_str());
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
lldb::addr_t
|
|
ProcessGDBRemote::DoAllocateMemory (size_t size, uint32_t permissions, Error &error)
|
|
{
|
|
Log *log (GetLogIfAnyCategoriesSet (LIBLLDB_LOG_PROCESS|LIBLLDB_LOG_EXPRESSIONS));
|
|
addr_t allocated_addr = LLDB_INVALID_ADDRESS;
|
|
|
|
LazyBool supported = m_gdb_comm.SupportsAllocDeallocMemory();
|
|
switch (supported)
|
|
{
|
|
case eLazyBoolCalculate:
|
|
case eLazyBoolYes:
|
|
allocated_addr = m_gdb_comm.AllocateMemory (size, permissions);
|
|
if (allocated_addr != LLDB_INVALID_ADDRESS || supported == eLazyBoolYes)
|
|
return allocated_addr;
|
|
|
|
case eLazyBoolNo:
|
|
// Call mmap() to create memory in the inferior..
|
|
unsigned prot = 0;
|
|
if (permissions & lldb::ePermissionsReadable)
|
|
prot |= eMmapProtRead;
|
|
if (permissions & lldb::ePermissionsWritable)
|
|
prot |= eMmapProtWrite;
|
|
if (permissions & lldb::ePermissionsExecutable)
|
|
prot |= eMmapProtExec;
|
|
|
|
if (InferiorCallMmap(this, allocated_addr, 0, size, prot,
|
|
eMmapFlagsAnon | eMmapFlagsPrivate, -1, 0))
|
|
m_addr_to_mmap_size[allocated_addr] = size;
|
|
else
|
|
{
|
|
allocated_addr = LLDB_INVALID_ADDRESS;
|
|
if (log)
|
|
log->Printf ("ProcessGDBRemote::%s no direct stub support for memory allocation, and InferiorCallMmap also failed - is stub missing register context save/restore capability?", __FUNCTION__);
|
|
}
|
|
break;
|
|
}
|
|
|
|
if (allocated_addr == LLDB_INVALID_ADDRESS)
|
|
error.SetErrorStringWithFormat("unable to allocate %" PRIu64 " bytes of memory with permissions %s", (uint64_t)size, GetPermissionsAsCString (permissions));
|
|
else
|
|
error.Clear();
|
|
return allocated_addr;
|
|
}
|
|
|
|
Error
|
|
ProcessGDBRemote::GetMemoryRegionInfo (addr_t load_addr,
|
|
MemoryRegionInfo ®ion_info)
|
|
{
|
|
|
|
Error error (m_gdb_comm.GetMemoryRegionInfo (load_addr, region_info));
|
|
return error;
|
|
}
|
|
|
|
Error
|
|
ProcessGDBRemote::GetWatchpointSupportInfo (uint32_t &num)
|
|
{
|
|
|
|
Error error (m_gdb_comm.GetWatchpointSupportInfo (num));
|
|
return error;
|
|
}
|
|
|
|
Error
|
|
ProcessGDBRemote::GetWatchpointSupportInfo (uint32_t &num, bool& after)
|
|
{
|
|
Error error (m_gdb_comm.GetWatchpointSupportInfo (num, after, GetTarget().GetArchitecture()));
|
|
return error;
|
|
}
|
|
|
|
Error
|
|
ProcessGDBRemote::DoDeallocateMemory (lldb::addr_t addr)
|
|
{
|
|
Error error;
|
|
LazyBool supported = m_gdb_comm.SupportsAllocDeallocMemory();
|
|
|
|
switch (supported)
|
|
{
|
|
case eLazyBoolCalculate:
|
|
// We should never be deallocating memory without allocating memory
|
|
// first so we should never get eLazyBoolCalculate
|
|
error.SetErrorString ("tried to deallocate memory without ever allocating memory");
|
|
break;
|
|
|
|
case eLazyBoolYes:
|
|
if (!m_gdb_comm.DeallocateMemory (addr))
|
|
error.SetErrorStringWithFormat("unable to deallocate memory at 0x%" PRIx64, addr);
|
|
break;
|
|
|
|
case eLazyBoolNo:
|
|
// Call munmap() to deallocate memory in the inferior..
|
|
{
|
|
MMapMap::iterator pos = m_addr_to_mmap_size.find(addr);
|
|
if (pos != m_addr_to_mmap_size.end() &&
|
|
InferiorCallMunmap(this, addr, pos->second))
|
|
m_addr_to_mmap_size.erase (pos);
|
|
else
|
|
error.SetErrorStringWithFormat("unable to deallocate memory at 0x%" PRIx64, addr);
|
|
}
|
|
break;
|
|
}
|
|
|
|
return error;
|
|
}
|
|
|
|
|
|
//------------------------------------------------------------------
|
|
// Process STDIO
|
|
//------------------------------------------------------------------
|
|
size_t
|
|
ProcessGDBRemote::PutSTDIN (const char *src, size_t src_len, Error &error)
|
|
{
|
|
if (m_stdio_communication.IsConnected())
|
|
{
|
|
ConnectionStatus status;
|
|
m_stdio_communication.Write(src, src_len, status, NULL);
|
|
}
|
|
else if (m_stdin_forward)
|
|
{
|
|
m_gdb_comm.SendStdinNotification(src, src_len);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
Error
|
|
ProcessGDBRemote::EnableBreakpointSite (BreakpointSite *bp_site)
|
|
{
|
|
Error error;
|
|
assert(bp_site != NULL);
|
|
|
|
// Get logging info
|
|
Log *log(ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_BREAKPOINTS));
|
|
user_id_t site_id = bp_site->GetID();
|
|
|
|
// Get the breakpoint address
|
|
const addr_t addr = bp_site->GetLoadAddress();
|
|
|
|
// Log that a breakpoint was requested
|
|
if (log)
|
|
log->Printf("ProcessGDBRemote::EnableBreakpointSite (size_id = %" PRIu64 ") address = 0x%" PRIx64, site_id, (uint64_t)addr);
|
|
|
|
// Breakpoint already exists and is enabled
|
|
if (bp_site->IsEnabled())
|
|
{
|
|
if (log)
|
|
log->Printf("ProcessGDBRemote::EnableBreakpointSite (size_id = %" PRIu64 ") address = 0x%" PRIx64 " -- SUCCESS (already enabled)", site_id, (uint64_t)addr);
|
|
return error;
|
|
}
|
|
|
|
// Get the software breakpoint trap opcode size
|
|
const size_t bp_op_size = GetSoftwareBreakpointTrapOpcode(bp_site);
|
|
|
|
// SupportsGDBStoppointPacket() simply checks a boolean, indicating if this breakpoint type
|
|
// is supported by the remote stub. These are set to true by default, and later set to false
|
|
// only after we receive an unimplemented response when sending a breakpoint packet. This means
|
|
// initially that unless we were specifically instructed to use a hardware breakpoint, LLDB will
|
|
// attempt to set a software breakpoint. HardwareRequired() also queries a boolean variable which
|
|
// indicates if the user specifically asked for hardware breakpoints. If true then we will
|
|
// skip over software breakpoints.
|
|
if (m_gdb_comm.SupportsGDBStoppointPacket(eBreakpointSoftware) && (!bp_site->HardwareRequired()))
|
|
{
|
|
// Try to send off a software breakpoint packet ($Z0)
|
|
if (m_gdb_comm.SendGDBStoppointTypePacket(eBreakpointSoftware, true, addr, bp_op_size) == 0)
|
|
{
|
|
// The breakpoint was placed successfully
|
|
bp_site->SetEnabled(true);
|
|
bp_site->SetType(BreakpointSite::eExternal);
|
|
return error;
|
|
}
|
|
|
|
// SendGDBStoppointTypePacket() will return an error if it was unable to set this
|
|
// breakpoint. We need to differentiate between a error specific to placing this breakpoint
|
|
// or if we have learned that this breakpoint type is unsupported. To do this, we
|
|
// must test the support boolean for this breakpoint type to see if it now indicates that
|
|
// this breakpoint type is unsupported. If they are still supported then we should return
|
|
// with the error code. If they are now unsupported, then we would like to fall through
|
|
// and try another form of breakpoint.
|
|
if (m_gdb_comm.SupportsGDBStoppointPacket(eBreakpointSoftware))
|
|
return error;
|
|
|
|
// We reach here when software breakpoints have been found to be unsupported. For future
|
|
// calls to set a breakpoint, we will not attempt to set a breakpoint with a type that is
|
|
// known not to be supported.
|
|
if (log)
|
|
log->Printf("Software breakpoints are unsupported");
|
|
|
|
// So we will fall through and try a hardware breakpoint
|
|
}
|
|
|
|
// The process of setting a hardware breakpoint is much the same as above. We check the
|
|
// supported boolean for this breakpoint type, and if it is thought to be supported then we
|
|
// will try to set this breakpoint with a hardware breakpoint.
|
|
if (m_gdb_comm.SupportsGDBStoppointPacket(eBreakpointHardware))
|
|
{
|
|
// Try to send off a hardware breakpoint packet ($Z1)
|
|
if (m_gdb_comm.SendGDBStoppointTypePacket(eBreakpointHardware, true, addr, bp_op_size) == 0)
|
|
{
|
|
// The breakpoint was placed successfully
|
|
bp_site->SetEnabled(true);
|
|
bp_site->SetType(BreakpointSite::eHardware);
|
|
return error;
|
|
}
|
|
|
|
// Check if the error was something other then an unsupported breakpoint type
|
|
if (m_gdb_comm.SupportsGDBStoppointPacket(eBreakpointHardware))
|
|
{
|
|
// Unable to set this hardware breakpoint
|
|
error.SetErrorString("failed to set hardware breakpoint (hardware breakpoint resources might be exhausted or unavailable)");
|
|
return error;
|
|
}
|
|
|
|
// We will reach here when the stub gives an unsupported response to a hardware breakpoint
|
|
if (log)
|
|
log->Printf("Hardware breakpoints are unsupported");
|
|
|
|
// Finally we will falling through to a #trap style breakpoint
|
|
}
|
|
|
|
// Don't fall through when hardware breakpoints were specifically requested
|
|
if (bp_site->HardwareRequired())
|
|
{
|
|
error.SetErrorString("hardware breakpoints are not supported");
|
|
return error;
|
|
}
|
|
|
|
// As a last resort we want to place a manual breakpoint. An instruction
|
|
// is placed into the process memory using memory write packets.
|
|
return EnableSoftwareBreakpoint(bp_site);
|
|
}
|
|
|
|
Error
|
|
ProcessGDBRemote::DisableBreakpointSite (BreakpointSite *bp_site)
|
|
{
|
|
Error error;
|
|
assert (bp_site != NULL);
|
|
addr_t addr = bp_site->GetLoadAddress();
|
|
user_id_t site_id = bp_site->GetID();
|
|
Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_BREAKPOINTS));
|
|
if (log)
|
|
log->Printf ("ProcessGDBRemote::DisableBreakpointSite (site_id = %" PRIu64 ") addr = 0x%8.8" PRIx64, site_id, (uint64_t)addr);
|
|
|
|
if (bp_site->IsEnabled())
|
|
{
|
|
const size_t bp_op_size = GetSoftwareBreakpointTrapOpcode (bp_site);
|
|
|
|
BreakpointSite::Type bp_type = bp_site->GetType();
|
|
switch (bp_type)
|
|
{
|
|
case BreakpointSite::eSoftware:
|
|
error = DisableSoftwareBreakpoint (bp_site);
|
|
break;
|
|
|
|
case BreakpointSite::eHardware:
|
|
if (m_gdb_comm.SendGDBStoppointTypePacket(eBreakpointHardware, false, addr, bp_op_size))
|
|
error.SetErrorToGenericError();
|
|
break;
|
|
|
|
case BreakpointSite::eExternal:
|
|
{
|
|
GDBStoppointType stoppoint_type;
|
|
if (bp_site->IsHardware())
|
|
stoppoint_type = eBreakpointHardware;
|
|
else
|
|
stoppoint_type = eBreakpointSoftware;
|
|
|
|
if (m_gdb_comm.SendGDBStoppointTypePacket(stoppoint_type, false, addr, bp_op_size))
|
|
error.SetErrorToGenericError();
|
|
}
|
|
break;
|
|
}
|
|
if (error.Success())
|
|
bp_site->SetEnabled(false);
|
|
}
|
|
else
|
|
{
|
|
if (log)
|
|
log->Printf ("ProcessGDBRemote::DisableBreakpointSite (site_id = %" PRIu64 ") addr = 0x%8.8" PRIx64 " -- SUCCESS (already disabled)", site_id, (uint64_t)addr);
|
|
return error;
|
|
}
|
|
|
|
if (error.Success())
|
|
error.SetErrorToGenericError();
|
|
return error;
|
|
}
|
|
|
|
// Pre-requisite: wp != NULL.
|
|
static GDBStoppointType
|
|
GetGDBStoppointType (Watchpoint *wp)
|
|
{
|
|
assert(wp);
|
|
bool watch_read = wp->WatchpointRead();
|
|
bool watch_write = wp->WatchpointWrite();
|
|
|
|
// watch_read and watch_write cannot both be false.
|
|
assert(watch_read || watch_write);
|
|
if (watch_read && watch_write)
|
|
return eWatchpointReadWrite;
|
|
else if (watch_read)
|
|
return eWatchpointRead;
|
|
else // Must be watch_write, then.
|
|
return eWatchpointWrite;
|
|
}
|
|
|
|
Error
|
|
ProcessGDBRemote::EnableWatchpoint (Watchpoint *wp, bool notify)
|
|
{
|
|
Error error;
|
|
if (wp)
|
|
{
|
|
user_id_t watchID = wp->GetID();
|
|
addr_t addr = wp->GetLoadAddress();
|
|
Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_WATCHPOINTS));
|
|
if (log)
|
|
log->Printf ("ProcessGDBRemote::EnableWatchpoint(watchID = %" PRIu64 ")", watchID);
|
|
if (wp->IsEnabled())
|
|
{
|
|
if (log)
|
|
log->Printf("ProcessGDBRemote::EnableWatchpoint(watchID = %" PRIu64 ") addr = 0x%8.8" PRIx64 ": watchpoint already enabled.", watchID, (uint64_t)addr);
|
|
return error;
|
|
}
|
|
|
|
GDBStoppointType type = GetGDBStoppointType(wp);
|
|
// Pass down an appropriate z/Z packet...
|
|
if (m_gdb_comm.SupportsGDBStoppointPacket (type))
|
|
{
|
|
if (m_gdb_comm.SendGDBStoppointTypePacket(type, true, addr, wp->GetByteSize()) == 0)
|
|
{
|
|
wp->SetEnabled(true, notify);
|
|
return error;
|
|
}
|
|
else
|
|
error.SetErrorString("sending gdb watchpoint packet failed");
|
|
}
|
|
else
|
|
error.SetErrorString("watchpoints not supported");
|
|
}
|
|
else
|
|
{
|
|
error.SetErrorString("Watchpoint argument was NULL.");
|
|
}
|
|
if (error.Success())
|
|
error.SetErrorToGenericError();
|
|
return error;
|
|
}
|
|
|
|
Error
|
|
ProcessGDBRemote::DisableWatchpoint (Watchpoint *wp, bool notify)
|
|
{
|
|
Error error;
|
|
if (wp)
|
|
{
|
|
user_id_t watchID = wp->GetID();
|
|
|
|
Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_WATCHPOINTS));
|
|
|
|
addr_t addr = wp->GetLoadAddress();
|
|
|
|
if (log)
|
|
log->Printf ("ProcessGDBRemote::DisableWatchpoint (watchID = %" PRIu64 ") addr = 0x%8.8" PRIx64, watchID, (uint64_t)addr);
|
|
|
|
if (!wp->IsEnabled())
|
|
{
|
|
if (log)
|
|
log->Printf ("ProcessGDBRemote::DisableWatchpoint (watchID = %" PRIu64 ") addr = 0x%8.8" PRIx64 " -- SUCCESS (already disabled)", watchID, (uint64_t)addr);
|
|
// See also 'class WatchpointSentry' within StopInfo.cpp.
|
|
// This disabling attempt might come from the user-supplied actions, we'll route it in order for
|
|
// the watchpoint object to intelligently process this action.
|
|
wp->SetEnabled(false, notify);
|
|
return error;
|
|
}
|
|
|
|
if (wp->IsHardware())
|
|
{
|
|
GDBStoppointType type = GetGDBStoppointType(wp);
|
|
// Pass down an appropriate z/Z packet...
|
|
if (m_gdb_comm.SendGDBStoppointTypePacket(type, false, addr, wp->GetByteSize()) == 0)
|
|
{
|
|
wp->SetEnabled(false, notify);
|
|
return error;
|
|
}
|
|
else
|
|
error.SetErrorString("sending gdb watchpoint packet failed");
|
|
}
|
|
// TODO: clear software watchpoints if we implement them
|
|
}
|
|
else
|
|
{
|
|
error.SetErrorString("Watchpoint argument was NULL.");
|
|
}
|
|
if (error.Success())
|
|
error.SetErrorToGenericError();
|
|
return error;
|
|
}
|
|
|
|
void
|
|
ProcessGDBRemote::Clear()
|
|
{
|
|
m_flags = 0;
|
|
m_thread_list_real.Clear();
|
|
m_thread_list.Clear();
|
|
}
|
|
|
|
Error
|
|
ProcessGDBRemote::DoSignal (int signo)
|
|
{
|
|
Error error;
|
|
Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS));
|
|
if (log)
|
|
log->Printf ("ProcessGDBRemote::DoSignal (signal = %d)", signo);
|
|
|
|
if (!m_gdb_comm.SendAsyncSignal (signo))
|
|
error.SetErrorStringWithFormat("failed to send signal %i", signo);
|
|
return error;
|
|
}
|
|
|
|
Error
|
|
ProcessGDBRemote::LaunchAndConnectToDebugserver (const ProcessInfo &process_info)
|
|
{
|
|
Error error;
|
|
if (m_debugserver_pid == LLDB_INVALID_PROCESS_ID)
|
|
{
|
|
// If we locate debugserver, keep that located version around
|
|
static FileSpec g_debugserver_file_spec;
|
|
|
|
ProcessLaunchInfo debugserver_launch_info;
|
|
// Make debugserver run in its own session so signals generated by
|
|
// special terminal key sequences (^C) don't affect debugserver.
|
|
debugserver_launch_info.SetLaunchInSeparateProcessGroup(true);
|
|
|
|
debugserver_launch_info.SetMonitorProcessCallback (MonitorDebugserverProcess, this, false);
|
|
debugserver_launch_info.SetUserID(process_info.GetUserID());
|
|
|
|
#if defined (__APPLE__) && (defined (__arm__) || defined (__arm64__) || defined (__aarch64__))
|
|
// On iOS, still do a local connection using a random port
|
|
const char *hostname = "127.0.0.1";
|
|
uint16_t port = get_random_port ();
|
|
#else
|
|
// Set hostname being NULL to do the reverse connect where debugserver
|
|
// will bind to port zero and it will communicate back to us the port
|
|
// that we will connect to
|
|
const char *hostname = nullptr;
|
|
uint16_t port = 0;
|
|
#endif
|
|
|
|
StreamString url_str;
|
|
const char* url = nullptr;
|
|
if (hostname != nullptr)
|
|
{
|
|
url_str.Printf("%s:%u", hostname, port);
|
|
url = url_str.GetData();
|
|
}
|
|
|
|
error = m_gdb_comm.StartDebugserverProcess (url,
|
|
GetTarget().GetPlatform().get(),
|
|
debugserver_launch_info,
|
|
&port);
|
|
|
|
if (error.Success ())
|
|
m_debugserver_pid = debugserver_launch_info.GetProcessID();
|
|
else
|
|
m_debugserver_pid = LLDB_INVALID_PROCESS_ID;
|
|
|
|
if (m_debugserver_pid != LLDB_INVALID_PROCESS_ID)
|
|
StartAsyncThread ();
|
|
|
|
if (error.Fail())
|
|
{
|
|
Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_PROCESS));
|
|
|
|
if (log)
|
|
log->Printf("failed to start debugserver process: %s", error.AsCString());
|
|
return error;
|
|
}
|
|
|
|
if (m_gdb_comm.IsConnected())
|
|
{
|
|
// Finish the connection process by doing the handshake without connecting (send NULL URL)
|
|
ConnectToDebugserver (NULL);
|
|
}
|
|
else
|
|
{
|
|
StreamString connect_url;
|
|
connect_url.Printf("connect://%s:%u", hostname, port);
|
|
error = ConnectToDebugserver (connect_url.GetString().c_str());
|
|
}
|
|
|
|
}
|
|
return error;
|
|
}
|
|
|
|
bool
|
|
ProcessGDBRemote::MonitorDebugserverProcess
|
|
(
|
|
void *callback_baton,
|
|
lldb::pid_t debugserver_pid,
|
|
bool exited, // True if the process did exit
|
|
int signo, // Zero for no signal
|
|
int exit_status // Exit value of process if signal is zero
|
|
)
|
|
{
|
|
// The baton is a "ProcessGDBRemote *". Now this class might be gone
|
|
// and might not exist anymore, so we need to carefully try to get the
|
|
// target for this process first since we have a race condition when
|
|
// we are done running between getting the notice that the inferior
|
|
// process has died and the debugserver that was debugging this process.
|
|
// In our test suite, we are also continually running process after
|
|
// process, so we must be very careful to make sure:
|
|
// 1 - process object hasn't been deleted already
|
|
// 2 - that a new process object hasn't been recreated in its place
|
|
|
|
// "debugserver_pid" argument passed in is the process ID for
|
|
// debugserver that we are tracking...
|
|
Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS));
|
|
|
|
ProcessGDBRemote *process = (ProcessGDBRemote *)callback_baton;
|
|
|
|
// Get a shared pointer to the target that has a matching process pointer.
|
|
// This target could be gone, or the target could already have a new process
|
|
// object inside of it
|
|
TargetSP target_sp (Debugger::FindTargetWithProcess(process));
|
|
|
|
if (log)
|
|
log->Printf ("ProcessGDBRemote::MonitorDebugserverProcess (baton=%p, pid=%" PRIu64 ", signo=%i (0x%x), exit_status=%i)", callback_baton, debugserver_pid, signo, signo, exit_status);
|
|
|
|
if (target_sp)
|
|
{
|
|
// We found a process in a target that matches, but another thread
|
|
// might be in the process of launching a new process that will
|
|
// soon replace it, so get a shared pointer to the process so we
|
|
// can keep it alive.
|
|
ProcessSP process_sp (target_sp->GetProcessSP());
|
|
// Now we have a shared pointer to the process that can't go away on us
|
|
// so we now make sure it was the same as the one passed in, and also make
|
|
// sure that our previous "process *" didn't get deleted and have a new
|
|
// "process *" created in its place with the same pointer. To verify this
|
|
// we make sure the process has our debugserver process ID. If we pass all
|
|
// of these tests, then we are sure that this process is the one we were
|
|
// looking for.
|
|
if (process_sp && process == process_sp.get() && process->m_debugserver_pid == debugserver_pid)
|
|
{
|
|
// Sleep for a half a second to make sure our inferior process has
|
|
// time to set its exit status before we set it incorrectly when
|
|
// both the debugserver and the inferior process shut down.
|
|
usleep (500000);
|
|
// If our process hasn't yet exited, debugserver might have died.
|
|
// If the process did exit, the we are reaping it.
|
|
const StateType state = process->GetState();
|
|
|
|
if (process->m_debugserver_pid != LLDB_INVALID_PROCESS_ID &&
|
|
state != eStateInvalid &&
|
|
state != eStateUnloaded &&
|
|
state != eStateExited &&
|
|
state != eStateDetached)
|
|
{
|
|
char error_str[1024];
|
|
if (signo)
|
|
{
|
|
const char *signal_cstr = process->GetUnixSignals()->GetSignalAsCString(signo);
|
|
if (signal_cstr)
|
|
::snprintf (error_str, sizeof (error_str), DEBUGSERVER_BASENAME " died with signal %s", signal_cstr);
|
|
else
|
|
::snprintf (error_str, sizeof (error_str), DEBUGSERVER_BASENAME " died with signal %i", signo);
|
|
}
|
|
else
|
|
{
|
|
::snprintf (error_str, sizeof (error_str), DEBUGSERVER_BASENAME " died with an exit status of 0x%8.8x", exit_status);
|
|
}
|
|
|
|
process->SetExitStatus (-1, error_str);
|
|
}
|
|
// Debugserver has exited we need to let our ProcessGDBRemote
|
|
// know that it no longer has a debugserver instance
|
|
process->m_debugserver_pid = LLDB_INVALID_PROCESS_ID;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
void
|
|
ProcessGDBRemote::KillDebugserverProcess ()
|
|
{
|
|
m_gdb_comm.Disconnect();
|
|
if (m_debugserver_pid != LLDB_INVALID_PROCESS_ID)
|
|
{
|
|
Host::Kill (m_debugserver_pid, SIGINT);
|
|
m_debugserver_pid = LLDB_INVALID_PROCESS_ID;
|
|
}
|
|
}
|
|
|
|
void
|
|
ProcessGDBRemote::Initialize()
|
|
{
|
|
static std::once_flag g_once_flag;
|
|
|
|
std::call_once(g_once_flag, []()
|
|
{
|
|
PluginManager::RegisterPlugin (GetPluginNameStatic(),
|
|
GetPluginDescriptionStatic(),
|
|
CreateInstance,
|
|
DebuggerInitialize);
|
|
});
|
|
}
|
|
|
|
void
|
|
ProcessGDBRemote::DebuggerInitialize (Debugger &debugger)
|
|
{
|
|
if (!PluginManager::GetSettingForProcessPlugin(debugger, PluginProperties::GetSettingName()))
|
|
{
|
|
const bool is_global_setting = true;
|
|
PluginManager::CreateSettingForProcessPlugin (debugger,
|
|
GetGlobalPluginProperties()->GetValueProperties(),
|
|
ConstString ("Properties for the gdb-remote process plug-in."),
|
|
is_global_setting);
|
|
}
|
|
}
|
|
|
|
bool
|
|
ProcessGDBRemote::StartAsyncThread ()
|
|
{
|
|
Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS));
|
|
|
|
if (log)
|
|
log->Printf ("ProcessGDBRemote::%s ()", __FUNCTION__);
|
|
|
|
Mutex::Locker start_locker(m_async_thread_state_mutex);
|
|
if (!m_async_thread.IsJoinable())
|
|
{
|
|
// Create a thread that watches our internal state and controls which
|
|
// events make it to clients (into the DCProcess event queue).
|
|
|
|
m_async_thread = ThreadLauncher::LaunchThread("<lldb.process.gdb-remote.async>", ProcessGDBRemote::AsyncThread, this, NULL);
|
|
}
|
|
else if (log)
|
|
log->Printf("ProcessGDBRemote::%s () - Called when Async thread was already running.", __FUNCTION__);
|
|
|
|
return m_async_thread.IsJoinable();
|
|
}
|
|
|
|
void
|
|
ProcessGDBRemote::StopAsyncThread ()
|
|
{
|
|
Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PROCESS));
|
|
|
|
if (log)
|
|
log->Printf ("ProcessGDBRemote::%s ()", __FUNCTION__);
|
|
|
|
Mutex::Locker start_locker(m_async_thread_state_mutex);
|
|
if (m_async_thread.IsJoinable())
|
|
{
|
|
m_async_broadcaster.BroadcastEvent (eBroadcastBitAsyncThreadShouldExit);
|
|
|
|
// This will shut down the async thread.
|
|
m_gdb_comm.Disconnect(); // Disconnect from the debug server.
|
|
|
|
// Stop the stdio thread
|
|
m_async_thread.Join(nullptr);
|
|
m_async_thread.Reset();
|
|
}
|
|
else if (log)
|
|
log->Printf("ProcessGDBRemote::%s () - Called when Async thread was not running.", __FUNCTION__);
|
|
}
|
|
|
|
bool
|
|
ProcessGDBRemote::HandleNotifyPacket (StringExtractorGDBRemote &packet)
|
|
{
|
|
// get the packet at a string
|
|
const std::string &pkt = packet.GetStringRef();
|
|
// skip %stop:
|
|
StringExtractorGDBRemote stop_info(pkt.c_str() + 5);
|
|
|
|
// pass as a thread stop info packet
|
|
SetLastStopPacket(stop_info);
|
|
|
|
// check for more stop reasons
|
|
HandleStopReplySequence();
|
|
|
|
// if the process is stopped then we need to fake a resume
|
|
// so that we can stop properly with the new break. This
|
|
// is possible due to SetPrivateState() broadcasting the
|
|
// state change as a side effect.
|
|
if (GetPrivateState() == lldb::StateType::eStateStopped)
|
|
{
|
|
SetPrivateState(lldb::StateType::eStateRunning);
|
|
}
|
|
|
|
// since we have some stopped packets we can halt the process
|
|
SetPrivateState(lldb::StateType::eStateStopped);
|
|
|
|
return true;
|
|
}
|
|
|
|
thread_result_t
|
|
ProcessGDBRemote::AsyncThread (void *arg)
|
|
{
|
|
ProcessGDBRemote *process = (ProcessGDBRemote*) arg;
|
|
|
|
Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet (GDBR_LOG_PROCESS));
|
|
if (log)
|
|
log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64 ") thread starting...", __FUNCTION__, arg, process->GetID());
|
|
|
|
EventSP event_sp;
|
|
bool done = false;
|
|
while (!done)
|
|
{
|
|
if (log)
|
|
log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64 ") listener.WaitForEvent (NULL, event_sp)...", __FUNCTION__, arg, process->GetID());
|
|
if (process->m_async_listener.WaitForEvent (NULL, event_sp))
|
|
{
|
|
const uint32_t event_type = event_sp->GetType();
|
|
if (event_sp->BroadcasterIs (&process->m_async_broadcaster))
|
|
{
|
|
if (log)
|
|
log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64 ") Got an event of type: %d...", __FUNCTION__, arg, process->GetID(), event_type);
|
|
|
|
switch (event_type)
|
|
{
|
|
case eBroadcastBitAsyncContinue:
|
|
{
|
|
const EventDataBytes *continue_packet = EventDataBytes::GetEventDataFromEvent(event_sp.get());
|
|
|
|
if (continue_packet)
|
|
{
|
|
const char *continue_cstr = (const char *)continue_packet->GetBytes ();
|
|
const size_t continue_cstr_len = continue_packet->GetByteSize ();
|
|
if (log)
|
|
log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64 ") got eBroadcastBitAsyncContinue: %s", __FUNCTION__, arg, process->GetID(), continue_cstr);
|
|
|
|
if (::strstr (continue_cstr, "vAttach") == NULL)
|
|
process->SetPrivateState(eStateRunning);
|
|
StringExtractorGDBRemote response;
|
|
|
|
// If in Non-Stop-Mode
|
|
if (process->GetTarget().GetNonStopModeEnabled())
|
|
{
|
|
// send the vCont packet
|
|
if (!process->GetGDBRemote().SendvContPacket(process, continue_cstr, continue_cstr_len, response))
|
|
{
|
|
// Something went wrong
|
|
done = true;
|
|
break;
|
|
}
|
|
}
|
|
// If in All-Stop-Mode
|
|
else
|
|
{
|
|
StateType stop_state = process->GetGDBRemote().SendContinuePacketAndWaitForResponse (process, continue_cstr, continue_cstr_len, response);
|
|
|
|
// We need to immediately clear the thread ID list so we are sure to get a valid list of threads.
|
|
// The thread ID list might be contained within the "response", or the stop reply packet that
|
|
// caused the stop. So clear it now before we give the stop reply packet to the process
|
|
// using the process->SetLastStopPacket()...
|
|
process->ClearThreadIDList ();
|
|
|
|
switch (stop_state)
|
|
{
|
|
case eStateStopped:
|
|
case eStateCrashed:
|
|
case eStateSuspended:
|
|
process->SetLastStopPacket (response);
|
|
process->SetPrivateState (stop_state);
|
|
break;
|
|
|
|
case eStateExited:
|
|
{
|
|
process->SetLastStopPacket (response);
|
|
process->ClearThreadIDList();
|
|
response.SetFilePos(1);
|
|
|
|
int exit_status = response.GetHexU8();
|
|
const char *desc_cstr = NULL;
|
|
StringExtractor extractor;
|
|
std::string desc_string;
|
|
if (response.GetBytesLeft() > 0 && response.GetChar('-') == ';')
|
|
{
|
|
std::string desc_token;
|
|
while (response.GetNameColonValue (desc_token, desc_string))
|
|
{
|
|
if (desc_token == "description")
|
|
{
|
|
extractor.GetStringRef().swap(desc_string);
|
|
extractor.SetFilePos(0);
|
|
extractor.GetHexByteString (desc_string);
|
|
desc_cstr = desc_string.c_str();
|
|
}
|
|
}
|
|
}
|
|
process->SetExitStatus(exit_status, desc_cstr);
|
|
done = true;
|
|
break;
|
|
}
|
|
case eStateInvalid:
|
|
{
|
|
// Check to see if we were trying to attach and if we got back
|
|
// the "E87" error code from debugserver -- this indicates that
|
|
// the process is not debuggable. Return a slightly more helpful
|
|
// error message about why the attach failed.
|
|
if (::strstr (continue_cstr, "vAttach") != NULL
|
|
&& response.GetError() == 0x87)
|
|
{
|
|
process->SetExitStatus(-1, "cannot attach to process due to System Integrity Protection");
|
|
}
|
|
// E01 code from vAttach means that the attach failed
|
|
if (::strstr (continue_cstr, "vAttach") != NULL
|
|
&& response.GetError() == 0x1)
|
|
{
|
|
process->SetExitStatus(-1, "unable to attach");
|
|
}
|
|
else
|
|
{
|
|
process->SetExitStatus(-1, "lost connection");
|
|
}
|
|
break;
|
|
}
|
|
|
|
default:
|
|
process->SetPrivateState (stop_state);
|
|
break;
|
|
} // switch(stop_state)
|
|
} // else // if in All-stop-mode
|
|
} // if (continue_packet)
|
|
} // case eBroadcastBitAysncContinue
|
|
break;
|
|
|
|
case eBroadcastBitAsyncThreadShouldExit:
|
|
if (log)
|
|
log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64 ") got eBroadcastBitAsyncThreadShouldExit...", __FUNCTION__, arg, process->GetID());
|
|
done = true;
|
|
break;
|
|
|
|
default:
|
|
if (log)
|
|
log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64 ") got unknown event 0x%8.8x", __FUNCTION__, arg, process->GetID(), event_type);
|
|
done = true;
|
|
break;
|
|
}
|
|
}
|
|
else if (event_sp->BroadcasterIs (&process->m_gdb_comm))
|
|
{
|
|
switch (event_type)
|
|
{
|
|
case Communication::eBroadcastBitReadThreadDidExit:
|
|
process->SetExitStatus (-1, "lost connection");
|
|
done = true;
|
|
break;
|
|
|
|
case GDBRemoteCommunication::eBroadcastBitGdbReadThreadGotNotify:
|
|
{
|
|
lldb_private::Event *event = event_sp.get();
|
|
const EventDataBytes *continue_packet = EventDataBytes::GetEventDataFromEvent(event);
|
|
StringExtractorGDBRemote notify((const char*)continue_packet->GetBytes());
|
|
// Hand this over to the process to handle
|
|
process->HandleNotifyPacket(notify);
|
|
break;
|
|
}
|
|
|
|
default:
|
|
if (log)
|
|
log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64 ") got unknown event 0x%8.8x", __FUNCTION__, arg, process->GetID(), event_type);
|
|
done = true;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (log)
|
|
log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64 ") listener.WaitForEvent (NULL, event_sp) => false", __FUNCTION__, arg, process->GetID());
|
|
done = true;
|
|
}
|
|
}
|
|
|
|
if (log)
|
|
log->Printf ("ProcessGDBRemote::%s (arg = %p, pid = %" PRIu64 ") thread exiting...", __FUNCTION__, arg, process->GetID());
|
|
|
|
return NULL;
|
|
}
|
|
|
|
//uint32_t
|
|
//ProcessGDBRemote::ListProcessesMatchingName (const char *name, StringList &matches, std::vector<lldb::pid_t> &pids)
|
|
//{
|
|
// // If we are planning to launch the debugserver remotely, then we need to fire up a debugserver
|
|
// // process and ask it for the list of processes. But if we are local, we can let the Host do it.
|
|
// if (m_local_debugserver)
|
|
// {
|
|
// return Host::ListProcessesMatchingName (name, matches, pids);
|
|
// }
|
|
// else
|
|
// {
|
|
// // FIXME: Implement talking to the remote debugserver.
|
|
// return 0;
|
|
// }
|
|
//
|
|
//}
|
|
//
|
|
bool
|
|
ProcessGDBRemote::NewThreadNotifyBreakpointHit (void *baton,
|
|
StoppointCallbackContext *context,
|
|
lldb::user_id_t break_id,
|
|
lldb::user_id_t break_loc_id)
|
|
{
|
|
// I don't think I have to do anything here, just make sure I notice the new thread when it starts to
|
|
// run so I can stop it if that's what I want to do.
|
|
Log *log (GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP));
|
|
if (log)
|
|
log->Printf("Hit New Thread Notification breakpoint.");
|
|
return false;
|
|
}
|
|
|
|
|
|
bool
|
|
ProcessGDBRemote::StartNoticingNewThreads()
|
|
{
|
|
Log *log (GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP));
|
|
if (m_thread_create_bp_sp)
|
|
{
|
|
if (log && log->GetVerbose())
|
|
log->Printf("Enabled noticing new thread breakpoint.");
|
|
m_thread_create_bp_sp->SetEnabled(true);
|
|
}
|
|
else
|
|
{
|
|
PlatformSP platform_sp (GetTarget().GetPlatform());
|
|
if (platform_sp)
|
|
{
|
|
m_thread_create_bp_sp = platform_sp->SetThreadCreationBreakpoint(GetTarget());
|
|
if (m_thread_create_bp_sp)
|
|
{
|
|
if (log && log->GetVerbose())
|
|
log->Printf("Successfully created new thread notification breakpoint %i", m_thread_create_bp_sp->GetID());
|
|
m_thread_create_bp_sp->SetCallback (ProcessGDBRemote::NewThreadNotifyBreakpointHit, this, true);
|
|
}
|
|
else
|
|
{
|
|
if (log)
|
|
log->Printf("Failed to create new thread notification breakpoint.");
|
|
}
|
|
}
|
|
}
|
|
return m_thread_create_bp_sp.get() != NULL;
|
|
}
|
|
|
|
bool
|
|
ProcessGDBRemote::StopNoticingNewThreads()
|
|
{
|
|
Log *log (GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP));
|
|
if (log && log->GetVerbose())
|
|
log->Printf ("Disabling new thread notification breakpoint.");
|
|
|
|
if (m_thread_create_bp_sp)
|
|
m_thread_create_bp_sp->SetEnabled(false);
|
|
|
|
return true;
|
|
}
|
|
|
|
DynamicLoader *
|
|
ProcessGDBRemote::GetDynamicLoader ()
|
|
{
|
|
if (m_dyld_ap.get() == NULL)
|
|
m_dyld_ap.reset (DynamicLoader::FindPlugin(this, NULL));
|
|
return m_dyld_ap.get();
|
|
}
|
|
|
|
Error
|
|
ProcessGDBRemote::SendEventData(const char *data)
|
|
{
|
|
int return_value;
|
|
bool was_supported;
|
|
|
|
Error error;
|
|
|
|
return_value = m_gdb_comm.SendLaunchEventDataPacket (data, &was_supported);
|
|
if (return_value != 0)
|
|
{
|
|
if (!was_supported)
|
|
error.SetErrorString("Sending events is not supported for this process.");
|
|
else
|
|
error.SetErrorStringWithFormat("Error sending event data: %d.", return_value);
|
|
}
|
|
return error;
|
|
}
|
|
|
|
const DataBufferSP
|
|
ProcessGDBRemote::GetAuxvData()
|
|
{
|
|
DataBufferSP buf;
|
|
if (m_gdb_comm.GetQXferAuxvReadSupported())
|
|
{
|
|
std::string response_string;
|
|
if (m_gdb_comm.SendPacketsAndConcatenateResponses("qXfer:auxv:read::", response_string) == GDBRemoteCommunication::PacketResult::Success)
|
|
buf.reset(new DataBufferHeap(response_string.c_str(), response_string.length()));
|
|
}
|
|
return buf;
|
|
}
|
|
|
|
StructuredData::ObjectSP
|
|
ProcessGDBRemote::GetExtendedInfoForThread (lldb::tid_t tid)
|
|
{
|
|
StructuredData::ObjectSP object_sp;
|
|
|
|
if (m_gdb_comm.GetThreadExtendedInfoSupported())
|
|
{
|
|
StructuredData::ObjectSP args_dict(new StructuredData::Dictionary());
|
|
SystemRuntime *runtime = GetSystemRuntime();
|
|
if (runtime)
|
|
{
|
|
runtime->AddThreadExtendedInfoPacketHints (args_dict);
|
|
}
|
|
args_dict->GetAsDictionary()->AddIntegerItem ("thread", tid);
|
|
|
|
StreamString packet;
|
|
packet << "jThreadExtendedInfo:";
|
|
args_dict->Dump (packet);
|
|
|
|
// FIXME the final character of a JSON dictionary, '}', is the escape
|
|
// character in gdb-remote binary mode. lldb currently doesn't escape
|
|
// these characters in its packet output -- so we add the quoted version
|
|
// of the } character here manually in case we talk to a debugserver which
|
|
// un-escapes the characters at packet read time.
|
|
packet << (char) (0x7d ^ 0x20);
|
|
|
|
StringExtractorGDBRemote response;
|
|
if (m_gdb_comm.SendPacketAndWaitForResponse(packet.GetData(), packet.GetSize(), response, false) == GDBRemoteCommunication::PacketResult::Success)
|
|
{
|
|
StringExtractorGDBRemote::ResponseType response_type = response.GetResponseType();
|
|
if (response_type == StringExtractorGDBRemote::eResponse)
|
|
{
|
|
if (!response.Empty())
|
|
{
|
|
object_sp = StructuredData::ParseJSON (response.GetStringRef());
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return object_sp;
|
|
}
|
|
|
|
StructuredData::ObjectSP
|
|
ProcessGDBRemote::GetLoadedDynamicLibrariesInfos (lldb::addr_t image_list_address, lldb::addr_t image_count)
|
|
{
|
|
StructuredData::ObjectSP object_sp;
|
|
|
|
if (m_gdb_comm.GetLoadedDynamicLibrariesInfosSupported())
|
|
{
|
|
// Scope for the scoped timeout object
|
|
GDBRemoteCommunication::ScopedTimeout timeout (m_gdb_comm, 10);
|
|
|
|
StructuredData::ObjectSP args_dict(new StructuredData::Dictionary());
|
|
args_dict->GetAsDictionary()->AddIntegerItem ("image_list_address", image_list_address);
|
|
args_dict->GetAsDictionary()->AddIntegerItem ("image_count", image_count);
|
|
|
|
StreamString packet;
|
|
packet << "jGetLoadedDynamicLibrariesInfos:";
|
|
args_dict->Dump (packet);
|
|
|
|
// FIXME the final character of a JSON dictionary, '}', is the escape
|
|
// character in gdb-remote binary mode. lldb currently doesn't escape
|
|
// these characters in its packet output -- so we add the quoted version
|
|
// of the } character here manually in case we talk to a debugserver which
|
|
// un-escapes the characters at packet read time.
|
|
packet << (char) (0x7d ^ 0x20);
|
|
|
|
StringExtractorGDBRemote response;
|
|
if (m_gdb_comm.SendPacketAndWaitForResponse(packet.GetData(), packet.GetSize(), response, false) == GDBRemoteCommunication::PacketResult::Success)
|
|
{
|
|
StringExtractorGDBRemote::ResponseType response_type = response.GetResponseType();
|
|
if (response_type == StringExtractorGDBRemote::eResponse)
|
|
{
|
|
if (!response.Empty())
|
|
{
|
|
object_sp = StructuredData::ParseJSON (response.GetStringRef());
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return object_sp;
|
|
}
|
|
|
|
// Establish the largest memory read/write payloads we should use.
|
|
// If the remote stub has a max packet size, stay under that size.
|
|
//
|
|
// If the remote stub's max packet size is crazy large, use a
|
|
// reasonable largeish default.
|
|
//
|
|
// If the remote stub doesn't advertise a max packet size, use a
|
|
// conservative default.
|
|
|
|
void
|
|
ProcessGDBRemote::GetMaxMemorySize()
|
|
{
|
|
const uint64_t reasonable_largeish_default = 128 * 1024;
|
|
const uint64_t conservative_default = 512;
|
|
|
|
if (m_max_memory_size == 0)
|
|
{
|
|
uint64_t stub_max_size = m_gdb_comm.GetRemoteMaxPacketSize();
|
|
if (stub_max_size != UINT64_MAX && stub_max_size != 0)
|
|
{
|
|
// Save the stub's claimed maximum packet size
|
|
m_remote_stub_max_memory_size = stub_max_size;
|
|
|
|
// Even if the stub says it can support ginormous packets,
|
|
// don't exceed our reasonable largeish default packet size.
|
|
if (stub_max_size > reasonable_largeish_default)
|
|
{
|
|
stub_max_size = reasonable_largeish_default;
|
|
}
|
|
|
|
m_max_memory_size = stub_max_size;
|
|
}
|
|
else
|
|
{
|
|
m_max_memory_size = conservative_default;
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
ProcessGDBRemote::SetUserSpecifiedMaxMemoryTransferSize (uint64_t user_specified_max)
|
|
{
|
|
if (user_specified_max != 0)
|
|
{
|
|
GetMaxMemorySize ();
|
|
|
|
if (m_remote_stub_max_memory_size != 0)
|
|
{
|
|
if (m_remote_stub_max_memory_size < user_specified_max)
|
|
{
|
|
m_max_memory_size = m_remote_stub_max_memory_size; // user specified a packet size too big, go as big
|
|
// as the remote stub says we can go.
|
|
}
|
|
else
|
|
{
|
|
m_max_memory_size = user_specified_max; // user's packet size is good
|
|
}
|
|
}
|
|
else
|
|
{
|
|
m_max_memory_size = user_specified_max; // user's packet size is probably fine
|
|
}
|
|
}
|
|
}
|
|
|
|
bool
|
|
ProcessGDBRemote::GetModuleSpec(const FileSpec& module_file_spec,
|
|
const ArchSpec& arch,
|
|
ModuleSpec &module_spec)
|
|
{
|
|
Log *log = GetLogIfAnyCategoriesSet (LIBLLDB_LOG_PLATFORM);
|
|
|
|
if (!m_gdb_comm.GetModuleInfo (module_file_spec, arch, module_spec))
|
|
{
|
|
if (log)
|
|
log->Printf ("ProcessGDBRemote::%s - failed to get module info for %s:%s",
|
|
__FUNCTION__, module_file_spec.GetPath ().c_str (),
|
|
arch.GetTriple ().getTriple ().c_str ());
|
|
return false;
|
|
}
|
|
|
|
if (log)
|
|
{
|
|
StreamString stream;
|
|
module_spec.Dump (stream);
|
|
log->Printf ("ProcessGDBRemote::%s - got module info for (%s:%s) : %s",
|
|
__FUNCTION__, module_file_spec.GetPath ().c_str (),
|
|
arch.GetTriple ().getTriple ().c_str (), stream.GetString ().c_str ());
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
ProcessGDBRemote::GetHostOSVersion(uint32_t &major,
|
|
uint32_t &minor,
|
|
uint32_t &update)
|
|
{
|
|
if (m_gdb_comm.GetOSVersion(major, minor, update))
|
|
return true;
|
|
// We failed to get the host OS version, defer to the base
|
|
// implementation to correctly invalidate the arguments.
|
|
return Process::GetHostOSVersion(major, minor, update);
|
|
}
|
|
|
|
namespace {
|
|
|
|
typedef std::vector<std::string> stringVec;
|
|
|
|
typedef std::vector<struct GdbServerRegisterInfo> GDBServerRegisterVec;
|
|
struct RegisterSetInfo
|
|
{
|
|
ConstString name;
|
|
};
|
|
|
|
typedef std::map<uint32_t, RegisterSetInfo> RegisterSetMap;
|
|
|
|
struct GdbServerTargetInfo
|
|
{
|
|
std::string arch;
|
|
std::string osabi;
|
|
stringVec includes;
|
|
RegisterSetMap reg_set_map;
|
|
XMLNode feature_node;
|
|
};
|
|
|
|
bool
|
|
ParseRegisters (XMLNode feature_node, GdbServerTargetInfo &target_info, GDBRemoteDynamicRegisterInfo &dyn_reg_info, ABISP abi_sp)
|
|
{
|
|
if (!feature_node)
|
|
return false;
|
|
|
|
uint32_t cur_reg_num = 0;
|
|
uint32_t reg_offset = 0;
|
|
|
|
feature_node.ForEachChildElementWithName("reg", [&target_info, &dyn_reg_info, &cur_reg_num, ®_offset, &abi_sp](const XMLNode ®_node) -> bool {
|
|
std::string gdb_group;
|
|
std::string gdb_type;
|
|
ConstString reg_name;
|
|
ConstString alt_name;
|
|
ConstString set_name;
|
|
std::vector<uint32_t> value_regs;
|
|
std::vector<uint32_t> invalidate_regs;
|
|
bool encoding_set = false;
|
|
bool format_set = false;
|
|
RegisterInfo reg_info = { NULL, // Name
|
|
NULL, // Alt name
|
|
0, // byte size
|
|
reg_offset, // offset
|
|
eEncodingUint, // encoding
|
|
eFormatHex, // format
|
|
{
|
|
LLDB_INVALID_REGNUM, // eh_frame reg num
|
|
LLDB_INVALID_REGNUM, // DWARF reg num
|
|
LLDB_INVALID_REGNUM, // generic reg num
|
|
cur_reg_num, // process plugin reg num
|
|
cur_reg_num // native register number
|
|
},
|
|
NULL,
|
|
NULL
|
|
};
|
|
|
|
reg_node.ForEachAttribute([&target_info, &gdb_group, &gdb_type, ®_name, &alt_name, &set_name, &value_regs, &invalidate_regs, &encoding_set, &format_set, ®_info, &cur_reg_num, ®_offset](const llvm::StringRef &name, const llvm::StringRef &value) -> bool {
|
|
if (name == "name")
|
|
{
|
|
reg_name.SetString(value);
|
|
}
|
|
else if (name == "bitsize")
|
|
{
|
|
reg_info.byte_size = StringConvert::ToUInt32(value.data(), 0, 0) / CHAR_BIT;
|
|
}
|
|
else if (name == "type")
|
|
{
|
|
gdb_type = value.str();
|
|
}
|
|
else if (name == "group")
|
|
{
|
|
gdb_group = value.str();
|
|
}
|
|
else if (name == "regnum")
|
|
{
|
|
const uint32_t regnum = StringConvert::ToUInt32(value.data(), LLDB_INVALID_REGNUM, 0);
|
|
if (regnum != LLDB_INVALID_REGNUM)
|
|
{
|
|
reg_info.kinds[eRegisterKindProcessPlugin] = regnum;
|
|
}
|
|
}
|
|
else if (name == "offset")
|
|
{
|
|
reg_offset = StringConvert::ToUInt32(value.data(), UINT32_MAX, 0);
|
|
}
|
|
else if (name == "altname")
|
|
{
|
|
alt_name.SetString(value);
|
|
}
|
|
else if (name == "encoding")
|
|
{
|
|
encoding_set = true;
|
|
reg_info.encoding = Args::StringToEncoding (value.data(), eEncodingUint);
|
|
}
|
|
else if (name == "format")
|
|
{
|
|
format_set = true;
|
|
Format format = eFormatInvalid;
|
|
if (Args::StringToFormat (value.data(), format, NULL).Success())
|
|
reg_info.format = format;
|
|
else if (value == "vector-sint8")
|
|
reg_info.format = eFormatVectorOfSInt8;
|
|
else if (value == "vector-uint8")
|
|
reg_info.format = eFormatVectorOfUInt8;
|
|
else if (value == "vector-sint16")
|
|
reg_info.format = eFormatVectorOfSInt16;
|
|
else if (value == "vector-uint16")
|
|
reg_info.format = eFormatVectorOfUInt16;
|
|
else if (value == "vector-sint32")
|
|
reg_info.format = eFormatVectorOfSInt32;
|
|
else if (value == "vector-uint32")
|
|
reg_info.format = eFormatVectorOfUInt32;
|
|
else if (value == "vector-float32")
|
|
reg_info.format = eFormatVectorOfFloat32;
|
|
else if (value == "vector-uint128")
|
|
reg_info.format = eFormatVectorOfUInt128;
|
|
}
|
|
else if (name == "group_id")
|
|
{
|
|
const uint32_t set_id = StringConvert::ToUInt32(value.data(), UINT32_MAX, 0);
|
|
RegisterSetMap::const_iterator pos = target_info.reg_set_map.find(set_id);
|
|
if (pos != target_info.reg_set_map.end())
|
|
set_name = pos->second.name;
|
|
}
|
|
else if (name == "gcc_regnum" || name == "ehframe_regnum")
|
|
{
|
|
reg_info.kinds[eRegisterKindEHFrame] = StringConvert::ToUInt32(value.data(), LLDB_INVALID_REGNUM, 0);
|
|
}
|
|
else if (name == "dwarf_regnum")
|
|
{
|
|
reg_info.kinds[eRegisterKindDWARF] = StringConvert::ToUInt32(value.data(), LLDB_INVALID_REGNUM, 0);
|
|
}
|
|
else if (name == "generic")
|
|
{
|
|
reg_info.kinds[eRegisterKindGeneric] = Args::StringToGenericRegister(value.data());
|
|
}
|
|
else if (name == "value_regnums")
|
|
{
|
|
SplitCommaSeparatedRegisterNumberString(value, value_regs, 0);
|
|
}
|
|
else if (name == "invalidate_regnums")
|
|
{
|
|
SplitCommaSeparatedRegisterNumberString(value, invalidate_regs, 0);
|
|
}
|
|
else
|
|
{
|
|
printf("unhandled attribute %s = %s\n", name.data(), value.data());
|
|
}
|
|
return true; // Keep iterating through all attributes
|
|
});
|
|
|
|
if (!gdb_type.empty() && !(encoding_set || format_set))
|
|
{
|
|
if (gdb_type.find("int") == 0)
|
|
{
|
|
reg_info.format = eFormatHex;
|
|
reg_info.encoding = eEncodingUint;
|
|
}
|
|
else if (gdb_type == "data_ptr" || gdb_type == "code_ptr")
|
|
{
|
|
reg_info.format = eFormatAddressInfo;
|
|
reg_info.encoding = eEncodingUint;
|
|
}
|
|
else if (gdb_type == "i387_ext" || gdb_type == "float")
|
|
{
|
|
reg_info.format = eFormatFloat;
|
|
reg_info.encoding = eEncodingIEEE754;
|
|
}
|
|
}
|
|
|
|
// Only update the register set name if we didn't get a "reg_set" attribute.
|
|
// "set_name" will be empty if we didn't have a "reg_set" attribute.
|
|
if (!set_name && !gdb_group.empty())
|
|
set_name.SetCString(gdb_group.c_str());
|
|
|
|
reg_info.byte_offset = reg_offset;
|
|
assert (reg_info.byte_size != 0);
|
|
reg_offset += reg_info.byte_size;
|
|
if (!value_regs.empty())
|
|
{
|
|
value_regs.push_back(LLDB_INVALID_REGNUM);
|
|
reg_info.value_regs = value_regs.data();
|
|
}
|
|
if (!invalidate_regs.empty())
|
|
{
|
|
invalidate_regs.push_back(LLDB_INVALID_REGNUM);
|
|
reg_info.invalidate_regs = invalidate_regs.data();
|
|
}
|
|
|
|
++cur_reg_num;
|
|
AugmentRegisterInfoViaABI (reg_info, reg_name, abi_sp);
|
|
dyn_reg_info.AddRegister(reg_info, reg_name, alt_name, set_name);
|
|
|
|
return true; // Keep iterating through all "reg" elements
|
|
});
|
|
return true;
|
|
}
|
|
|
|
} // namespace {}
|
|
|
|
|
|
// query the target of gdb-remote for extended target information
|
|
// return: 'true' on success
|
|
// 'false' on failure
|
|
bool
|
|
ProcessGDBRemote::GetGDBServerRegisterInfo ()
|
|
{
|
|
// Make sure LLDB has an XML parser it can use first
|
|
if (!XMLDocument::XMLEnabled())
|
|
return false;
|
|
|
|
// redirect libxml2's error handler since the default prints to stdout
|
|
|
|
GDBRemoteCommunicationClient & comm = m_gdb_comm;
|
|
|
|
// check that we have extended feature read support
|
|
if ( !comm.GetQXferFeaturesReadSupported( ) )
|
|
return false;
|
|
|
|
// request the target xml file
|
|
std::string raw;
|
|
lldb_private::Error lldberr;
|
|
if (!comm.ReadExtFeature(ConstString("features"),
|
|
ConstString("target.xml"),
|
|
raw,
|
|
lldberr))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
|
|
XMLDocument xml_document;
|
|
|
|
if (xml_document.ParseMemory(raw.c_str(), raw.size(), "target.xml"))
|
|
{
|
|
GdbServerTargetInfo target_info;
|
|
|
|
XMLNode target_node = xml_document.GetRootElement("target");
|
|
if (target_node)
|
|
{
|
|
XMLNode feature_node;
|
|
target_node.ForEachChildElement([&target_info, this, &feature_node](const XMLNode &node) -> bool
|
|
{
|
|
llvm::StringRef name = node.GetName();
|
|
if (name == "architecture")
|
|
{
|
|
node.GetElementText(target_info.arch);
|
|
}
|
|
else if (name == "osabi")
|
|
{
|
|
node.GetElementText(target_info.osabi);
|
|
}
|
|
else if (name == "xi:include" || name == "include")
|
|
{
|
|
llvm::StringRef href = node.GetAttributeValue("href");
|
|
if (!href.empty())
|
|
target_info.includes.push_back(href.str());
|
|
}
|
|
else if (name == "feature")
|
|
{
|
|
feature_node = node;
|
|
}
|
|
else if (name == "groups")
|
|
{
|
|
node.ForEachChildElementWithName("group", [&target_info](const XMLNode &node) -> bool {
|
|
uint32_t set_id = UINT32_MAX;
|
|
RegisterSetInfo set_info;
|
|
|
|
node.ForEachAttribute([&set_id, &set_info](const llvm::StringRef &name, const llvm::StringRef &value) -> bool {
|
|
if (name == "id")
|
|
set_id = StringConvert::ToUInt32(value.data(), UINT32_MAX, 0);
|
|
if (name == "name")
|
|
set_info.name = ConstString(value);
|
|
return true; // Keep iterating through all attributes
|
|
});
|
|
|
|
if (set_id != UINT32_MAX)
|
|
target_info.reg_set_map[set_id] = set_info;
|
|
return true; // Keep iterating through all "group" elements
|
|
});
|
|
}
|
|
return true; // Keep iterating through all children of the target_node
|
|
});
|
|
|
|
if (feature_node)
|
|
{
|
|
ParseRegisters(feature_node, target_info, this->m_register_info, GetABI());
|
|
}
|
|
|
|
for (const auto &include : target_info.includes)
|
|
{
|
|
// request register file
|
|
std::string xml_data;
|
|
if (!comm.ReadExtFeature(ConstString("features"),
|
|
ConstString(include),
|
|
xml_data,
|
|
lldberr))
|
|
continue;
|
|
|
|
XMLDocument include_xml_document;
|
|
include_xml_document.ParseMemory(xml_data.data(), xml_data.size(), include.c_str());
|
|
XMLNode include_feature_node = include_xml_document.GetRootElement("feature");
|
|
if (include_feature_node)
|
|
{
|
|
ParseRegisters(include_feature_node, target_info, this->m_register_info, GetABI());
|
|
}
|
|
}
|
|
this->m_register_info.Finalize(GetTarget().GetArchitecture());
|
|
}
|
|
}
|
|
|
|
return m_register_info.GetNumRegisters() > 0;
|
|
}
|
|
|
|
Error
|
|
ProcessGDBRemote::GetLoadedModuleList (GDBLoadedModuleInfoList & list)
|
|
{
|
|
// Make sure LLDB has an XML parser it can use first
|
|
if (!XMLDocument::XMLEnabled())
|
|
return Error (0, ErrorType::eErrorTypeGeneric);
|
|
|
|
Log *log = GetLogIfAnyCategoriesSet (LIBLLDB_LOG_PROCESS);
|
|
if (log)
|
|
log->Printf ("ProcessGDBRemote::%s", __FUNCTION__);
|
|
|
|
GDBRemoteCommunicationClient & comm = m_gdb_comm;
|
|
|
|
// check that we have extended feature read support
|
|
if (comm.GetQXferLibrariesSVR4ReadSupported ()) {
|
|
list.clear ();
|
|
|
|
// request the loaded library list
|
|
std::string raw;
|
|
lldb_private::Error lldberr;
|
|
|
|
if (!comm.ReadExtFeature (ConstString ("libraries-svr4"), ConstString (""), raw, lldberr))
|
|
return Error (0, ErrorType::eErrorTypeGeneric);
|
|
|
|
// parse the xml file in memory
|
|
if (log)
|
|
log->Printf ("parsing: %s", raw.c_str());
|
|
XMLDocument doc;
|
|
|
|
if (!doc.ParseMemory(raw.c_str(), raw.size(), "noname.xml"))
|
|
return Error (0, ErrorType::eErrorTypeGeneric);
|
|
|
|
XMLNode root_element = doc.GetRootElement("library-list-svr4");
|
|
if (!root_element)
|
|
return Error();
|
|
|
|
// main link map structure
|
|
llvm::StringRef main_lm = root_element.GetAttributeValue("main-lm");
|
|
if (!main_lm.empty())
|
|
{
|
|
list.m_link_map = StringConvert::ToUInt64(main_lm.data(), LLDB_INVALID_ADDRESS, 0);
|
|
}
|
|
|
|
root_element.ForEachChildElementWithName("library", [log, &list](const XMLNode &library) -> bool {
|
|
|
|
GDBLoadedModuleInfoList::LoadedModuleInfo module;
|
|
|
|
library.ForEachAttribute([log, &module](const llvm::StringRef &name, const llvm::StringRef &value) -> bool {
|
|
|
|
if (name == "name")
|
|
module.set_name (value.str());
|
|
else if (name == "lm")
|
|
{
|
|
// the address of the link_map struct.
|
|
module.set_link_map(StringConvert::ToUInt64(value.data(), LLDB_INVALID_ADDRESS, 0));
|
|
}
|
|
else if (name == "l_addr")
|
|
{
|
|
// the displacement as read from the field 'l_addr' of the link_map struct.
|
|
module.set_base(StringConvert::ToUInt64(value.data(), LLDB_INVALID_ADDRESS, 0));
|
|
// base address is always a displacement, not an absolute value.
|
|
module.set_base_is_offset(true);
|
|
}
|
|
else if (name == "l_ld")
|
|
{
|
|
// the memory address of the libraries PT_DYAMIC section.
|
|
module.set_dynamic(StringConvert::ToUInt64(value.data(), LLDB_INVALID_ADDRESS, 0));
|
|
}
|
|
|
|
return true; // Keep iterating over all properties of "library"
|
|
});
|
|
|
|
if (log)
|
|
{
|
|
std::string name;
|
|
lldb::addr_t lm=0, base=0, ld=0;
|
|
bool base_is_offset;
|
|
|
|
module.get_name (name);
|
|
module.get_link_map (lm);
|
|
module.get_base (base);
|
|
module.get_base_is_offset (base_is_offset);
|
|
module.get_dynamic (ld);
|
|
|
|
log->Printf ("found (link_map:0x%08" PRIx64 ", base:0x%08" PRIx64 "[%s], ld:0x%08" PRIx64 ", name:'%s')", lm, base, (base_is_offset ? "offset" : "absolute"), ld, name.c_str());
|
|
}
|
|
|
|
list.add (module);
|
|
return true; // Keep iterating over all "library" elements in the root node
|
|
});
|
|
|
|
if (log)
|
|
log->Printf ("found %" PRId32 " modules in total", (int) list.m_list.size());
|
|
} else if (comm.GetQXferLibrariesReadSupported ()) {
|
|
list.clear ();
|
|
|
|
// request the loaded library list
|
|
std::string raw;
|
|
lldb_private::Error lldberr;
|
|
|
|
if (!comm.ReadExtFeature (ConstString ("libraries"), ConstString (""), raw, lldberr))
|
|
return Error (0, ErrorType::eErrorTypeGeneric);
|
|
|
|
if (log)
|
|
log->Printf ("parsing: %s", raw.c_str());
|
|
XMLDocument doc;
|
|
|
|
if (!doc.ParseMemory(raw.c_str(), raw.size(), "noname.xml"))
|
|
return Error (0, ErrorType::eErrorTypeGeneric);
|
|
|
|
XMLNode root_element = doc.GetRootElement("library-list");
|
|
if (!root_element)
|
|
return Error();
|
|
|
|
root_element.ForEachChildElementWithName("library", [log, &list](const XMLNode &library) -> bool {
|
|
GDBLoadedModuleInfoList::LoadedModuleInfo module;
|
|
|
|
llvm::StringRef name = library.GetAttributeValue("name");
|
|
module.set_name(name.str());
|
|
|
|
// The base address of a given library will be the address of its
|
|
// first section. Most remotes send only one section for Windows
|
|
// targets for example.
|
|
const XMLNode §ion = library.FindFirstChildElementWithName("section");
|
|
llvm::StringRef address = section.GetAttributeValue("address");
|
|
module.set_base(StringConvert::ToUInt64(address.data(), LLDB_INVALID_ADDRESS, 0));
|
|
// These addresses are absolute values.
|
|
module.set_base_is_offset(false);
|
|
|
|
if (log)
|
|
{
|
|
std::string name;
|
|
lldb::addr_t base = 0;
|
|
bool base_is_offset;
|
|
module.get_name (name);
|
|
module.get_base (base);
|
|
module.get_base_is_offset (base_is_offset);
|
|
|
|
log->Printf ("found (base:0x%08" PRIx64 "[%s], name:'%s')", base, (base_is_offset ? "offset" : "absolute"), name.c_str());
|
|
}
|
|
|
|
list.add (module);
|
|
return true; // Keep iterating over all "library" elements in the root node
|
|
});
|
|
|
|
if (log)
|
|
log->Printf ("found %" PRId32 " modules in total", (int) list.m_list.size());
|
|
} else {
|
|
return Error (0, ErrorType::eErrorTypeGeneric);
|
|
}
|
|
|
|
return Error();
|
|
}
|
|
|
|
lldb::ModuleSP
|
|
ProcessGDBRemote::LoadModuleAtAddress (const FileSpec &file, lldb::addr_t base_addr, bool value_is_offset)
|
|
{
|
|
Target &target = m_process->GetTarget();
|
|
ModuleList &modules = target.GetImages();
|
|
ModuleSP module_sp;
|
|
|
|
bool changed = false;
|
|
|
|
ModuleSpec module_spec (file, target.GetArchitecture());
|
|
if ((module_sp = modules.FindFirstModule (module_spec)))
|
|
{
|
|
module_sp->SetLoadAddress (target, base_addr, value_is_offset, changed);
|
|
}
|
|
else if ((module_sp = target.GetSharedModule (module_spec)))
|
|
{
|
|
module_sp->SetLoadAddress (target, base_addr, value_is_offset, changed);
|
|
}
|
|
|
|
return module_sp;
|
|
}
|
|
|
|
size_t
|
|
ProcessGDBRemote::LoadModules ()
|
|
{
|
|
using lldb_private::process_gdb_remote::ProcessGDBRemote;
|
|
|
|
// request a list of loaded libraries from GDBServer
|
|
GDBLoadedModuleInfoList module_list;
|
|
if (GetLoadedModuleList (module_list).Fail())
|
|
return 0;
|
|
|
|
// get a list of all the modules
|
|
ModuleList new_modules;
|
|
|
|
for (GDBLoadedModuleInfoList::LoadedModuleInfo & modInfo : module_list.m_list)
|
|
{
|
|
std::string mod_name;
|
|
lldb::addr_t mod_base;
|
|
bool mod_base_is_offset;
|
|
|
|
bool valid = true;
|
|
valid &= modInfo.get_name (mod_name);
|
|
valid &= modInfo.get_base (mod_base);
|
|
valid &= modInfo.get_base_is_offset (mod_base_is_offset);
|
|
if (!valid)
|
|
continue;
|
|
|
|
// hack (cleaner way to get file name only?) (win/unix compat?)
|
|
size_t marker = mod_name.rfind ('/');
|
|
if (marker == std::string::npos)
|
|
marker = 0;
|
|
else
|
|
marker += 1;
|
|
|
|
FileSpec file (mod_name.c_str()+marker, true);
|
|
lldb::ModuleSP module_sp = LoadModuleAtAddress (file, mod_base, mod_base_is_offset);
|
|
|
|
if (module_sp.get())
|
|
new_modules.Append (module_sp);
|
|
}
|
|
|
|
if (new_modules.GetSize() > 0)
|
|
{
|
|
Target &target = GetTarget();
|
|
|
|
new_modules.ForEach ([&target](const lldb::ModuleSP module_sp) -> bool
|
|
{
|
|
lldb_private::ObjectFile * obj = module_sp->GetObjectFile ();
|
|
if (!obj)
|
|
return true;
|
|
|
|
if (obj->GetType () != ObjectFile::Type::eTypeExecutable)
|
|
return true;
|
|
|
|
lldb::ModuleSP module_copy_sp = module_sp;
|
|
target.SetExecutableModule (module_copy_sp, false);
|
|
return false;
|
|
});
|
|
|
|
ModuleList &loaded_modules = m_process->GetTarget().GetImages();
|
|
loaded_modules.AppendIfNeeded (new_modules);
|
|
m_process->GetTarget().ModulesDidLoad (new_modules);
|
|
}
|
|
|
|
return new_modules.GetSize();
|
|
}
|
|
|
|
Error
|
|
ProcessGDBRemote::GetFileLoadAddress(const FileSpec& file, bool& is_loaded, lldb::addr_t& load_addr)
|
|
{
|
|
is_loaded = false;
|
|
load_addr = LLDB_INVALID_ADDRESS;
|
|
|
|
std::string file_path = file.GetPath(false);
|
|
if (file_path.empty ())
|
|
return Error("Empty file name specified");
|
|
|
|
StreamString packet;
|
|
packet.PutCString("qFileLoadAddress:");
|
|
packet.PutCStringAsRawHex8(file_path.c_str());
|
|
|
|
StringExtractorGDBRemote response;
|
|
if (m_gdb_comm.SendPacketAndWaitForResponse(packet.GetString().c_str(), response, false) != GDBRemoteCommunication::PacketResult::Success)
|
|
return Error("Sending qFileLoadAddress packet failed");
|
|
|
|
if (response.IsErrorResponse())
|
|
{
|
|
if (response.GetError() == 1)
|
|
{
|
|
// The file is not loaded into the inferior
|
|
is_loaded = false;
|
|
load_addr = LLDB_INVALID_ADDRESS;
|
|
return Error();
|
|
}
|
|
|
|
return Error("Fetching file load address from remote server returned an error");
|
|
}
|
|
|
|
if (response.IsNormalResponse())
|
|
{
|
|
is_loaded = true;
|
|
load_addr = response.GetHexMaxU64(false, LLDB_INVALID_ADDRESS);
|
|
return Error();
|
|
}
|
|
|
|
return Error("Unknown error happened during sending the load address packet");
|
|
}
|
|
|
|
|
|
void
|
|
ProcessGDBRemote::ModulesDidLoad (ModuleList &module_list)
|
|
{
|
|
// We must call the lldb_private::Process::ModulesDidLoad () first before we do anything
|
|
Process::ModulesDidLoad (module_list);
|
|
|
|
// After loading shared libraries, we can ask our remote GDB server if
|
|
// it needs any symbols.
|
|
m_gdb_comm.ServeSymbolLookups(this);
|
|
}
|
|
|
|
|
|
class CommandObjectProcessGDBRemoteSpeedTest: public CommandObjectParsed
|
|
{
|
|
public:
|
|
CommandObjectProcessGDBRemoteSpeedTest(CommandInterpreter &interpreter) :
|
|
CommandObjectParsed (interpreter,
|
|
"process plugin packet speed-test",
|
|
"Tests packet speeds of various sizes to determine the performance characteristics of the GDB remote connection. ",
|
|
NULL),
|
|
m_option_group (interpreter),
|
|
m_num_packets (LLDB_OPT_SET_1, false, "count", 'c', 0, eArgTypeCount, "The number of packets to send of each varying size (default is 1000).", 1000),
|
|
m_max_send (LLDB_OPT_SET_1, false, "max-send", 's', 0, eArgTypeCount, "The maximum number of bytes to send in a packet. Sizes increase in powers of 2 while the size is less than or equal to this option value. (default 1024).", 1024),
|
|
m_max_recv (LLDB_OPT_SET_1, false, "max-receive", 'r', 0, eArgTypeCount, "The maximum number of bytes to receive in a packet. Sizes increase in powers of 2 while the size is less than or equal to this option value. (default 1024).", 1024),
|
|
m_json (LLDB_OPT_SET_1, false, "json", 'j', "Print the output as JSON data for easy parsing.", false, true)
|
|
{
|
|
m_option_group.Append (&m_num_packets, LLDB_OPT_SET_ALL, LLDB_OPT_SET_1);
|
|
m_option_group.Append (&m_max_send, LLDB_OPT_SET_ALL, LLDB_OPT_SET_1);
|
|
m_option_group.Append (&m_max_recv, LLDB_OPT_SET_ALL, LLDB_OPT_SET_1);
|
|
m_option_group.Append (&m_json, LLDB_OPT_SET_ALL, LLDB_OPT_SET_1);
|
|
m_option_group.Finalize();
|
|
}
|
|
|
|
~CommandObjectProcessGDBRemoteSpeedTest ()
|
|
{
|
|
}
|
|
|
|
|
|
Options *
|
|
GetOptions () override
|
|
{
|
|
return &m_option_group;
|
|
}
|
|
|
|
bool
|
|
DoExecute (Args& command, CommandReturnObject &result) override
|
|
{
|
|
const size_t argc = command.GetArgumentCount();
|
|
if (argc == 0)
|
|
{
|
|
ProcessGDBRemote *process = (ProcessGDBRemote *)m_interpreter.GetExecutionContext().GetProcessPtr();
|
|
if (process)
|
|
{
|
|
StreamSP output_stream_sp (m_interpreter.GetDebugger().GetAsyncOutputStream());
|
|
result.SetImmediateOutputStream (output_stream_sp);
|
|
|
|
const uint32_t num_packets = (uint32_t)m_num_packets.GetOptionValue().GetCurrentValue();
|
|
const uint64_t max_send = m_max_send.GetOptionValue().GetCurrentValue();
|
|
const uint64_t max_recv = m_max_recv.GetOptionValue().GetCurrentValue();
|
|
const bool json = m_json.GetOptionValue().GetCurrentValue();
|
|
if (output_stream_sp)
|
|
process->GetGDBRemote().TestPacketSpeed (num_packets, max_send, max_recv, json, *output_stream_sp);
|
|
else
|
|
{
|
|
process->GetGDBRemote().TestPacketSpeed (num_packets, max_send, max_recv, json, result.GetOutputStream());
|
|
}
|
|
result.SetStatus (eReturnStatusSuccessFinishResult);
|
|
return true;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
result.AppendErrorWithFormat ("'%s' takes no arguments", m_cmd_name.c_str());
|
|
}
|
|
result.SetStatus (eReturnStatusFailed);
|
|
return false;
|
|
}
|
|
protected:
|
|
OptionGroupOptions m_option_group;
|
|
OptionGroupUInt64 m_num_packets;
|
|
OptionGroupUInt64 m_max_send;
|
|
OptionGroupUInt64 m_max_recv;
|
|
OptionGroupBoolean m_json;
|
|
|
|
};
|
|
|
|
class CommandObjectProcessGDBRemotePacketHistory : public CommandObjectParsed
|
|
{
|
|
private:
|
|
|
|
public:
|
|
CommandObjectProcessGDBRemotePacketHistory(CommandInterpreter &interpreter) :
|
|
CommandObjectParsed (interpreter,
|
|
"process plugin packet history",
|
|
"Dumps the packet history buffer. ",
|
|
NULL)
|
|
{
|
|
}
|
|
|
|
~CommandObjectProcessGDBRemotePacketHistory ()
|
|
{
|
|
}
|
|
|
|
bool
|
|
DoExecute (Args& command, CommandReturnObject &result) override
|
|
{
|
|
const size_t argc = command.GetArgumentCount();
|
|
if (argc == 0)
|
|
{
|
|
ProcessGDBRemote *process = (ProcessGDBRemote *)m_interpreter.GetExecutionContext().GetProcessPtr();
|
|
if (process)
|
|
{
|
|
process->GetGDBRemote().DumpHistory(result.GetOutputStream());
|
|
result.SetStatus (eReturnStatusSuccessFinishResult);
|
|
return true;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
result.AppendErrorWithFormat ("'%s' takes no arguments", m_cmd_name.c_str());
|
|
}
|
|
result.SetStatus (eReturnStatusFailed);
|
|
return false;
|
|
}
|
|
};
|
|
|
|
class CommandObjectProcessGDBRemotePacketXferSize : public CommandObjectParsed
|
|
{
|
|
private:
|
|
|
|
public:
|
|
CommandObjectProcessGDBRemotePacketXferSize(CommandInterpreter &interpreter) :
|
|
CommandObjectParsed (interpreter,
|
|
"process plugin packet xfer-size",
|
|
"Maximum size that lldb will try to read/write one one chunk.",
|
|
NULL)
|
|
{
|
|
}
|
|
|
|
~CommandObjectProcessGDBRemotePacketXferSize ()
|
|
{
|
|
}
|
|
|
|
bool
|
|
DoExecute (Args& command, CommandReturnObject &result) override
|
|
{
|
|
const size_t argc = command.GetArgumentCount();
|
|
if (argc == 0)
|
|
{
|
|
result.AppendErrorWithFormat ("'%s' takes an argument to specify the max amount to be transferred when reading/writing", m_cmd_name.c_str());
|
|
result.SetStatus (eReturnStatusFailed);
|
|
return false;
|
|
}
|
|
|
|
ProcessGDBRemote *process = (ProcessGDBRemote *)m_interpreter.GetExecutionContext().GetProcessPtr();
|
|
if (process)
|
|
{
|
|
const char *packet_size = command.GetArgumentAtIndex(0);
|
|
errno = 0;
|
|
uint64_t user_specified_max = strtoul (packet_size, NULL, 10);
|
|
if (errno == 0 && user_specified_max != 0)
|
|
{
|
|
process->SetUserSpecifiedMaxMemoryTransferSize (user_specified_max);
|
|
result.SetStatus (eReturnStatusSuccessFinishResult);
|
|
return true;
|
|
}
|
|
}
|
|
result.SetStatus (eReturnStatusFailed);
|
|
return false;
|
|
}
|
|
};
|
|
|
|
|
|
class CommandObjectProcessGDBRemotePacketSend : public CommandObjectParsed
|
|
{
|
|
private:
|
|
|
|
public:
|
|
CommandObjectProcessGDBRemotePacketSend(CommandInterpreter &interpreter) :
|
|
CommandObjectParsed (interpreter,
|
|
"process plugin packet send",
|
|
"Send a custom packet through the GDB remote protocol and print the answer. "
|
|
"The packet header and footer will automatically be added to the packet prior to sending and stripped from the result.",
|
|
NULL)
|
|
{
|
|
}
|
|
|
|
~CommandObjectProcessGDBRemotePacketSend ()
|
|
{
|
|
}
|
|
|
|
bool
|
|
DoExecute (Args& command, CommandReturnObject &result) override
|
|
{
|
|
const size_t argc = command.GetArgumentCount();
|
|
if (argc == 0)
|
|
{
|
|
result.AppendErrorWithFormat ("'%s' takes a one or more packet content arguments", m_cmd_name.c_str());
|
|
result.SetStatus (eReturnStatusFailed);
|
|
return false;
|
|
}
|
|
|
|
ProcessGDBRemote *process = (ProcessGDBRemote *)m_interpreter.GetExecutionContext().GetProcessPtr();
|
|
if (process)
|
|
{
|
|
for (size_t i=0; i<argc; ++ i)
|
|
{
|
|
const char *packet_cstr = command.GetArgumentAtIndex(0);
|
|
bool send_async = true;
|
|
StringExtractorGDBRemote response;
|
|
process->GetGDBRemote().SendPacketAndWaitForResponse(packet_cstr, response, send_async);
|
|
result.SetStatus (eReturnStatusSuccessFinishResult);
|
|
Stream &output_strm = result.GetOutputStream();
|
|
output_strm.Printf (" packet: %s\n", packet_cstr);
|
|
std::string &response_str = response.GetStringRef();
|
|
|
|
if (strstr(packet_cstr, "qGetProfileData") != NULL)
|
|
{
|
|
response_str = process->GetGDBRemote().HarmonizeThreadIdsForProfileData(process, response);
|
|
}
|
|
|
|
if (response_str.empty())
|
|
output_strm.PutCString ("response: \nerror: UNIMPLEMENTED\n");
|
|
else
|
|
output_strm.Printf ("response: %s\n", response.GetStringRef().c_str());
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
};
|
|
|
|
class CommandObjectProcessGDBRemotePacketMonitor : public CommandObjectRaw
|
|
{
|
|
private:
|
|
|
|
public:
|
|
CommandObjectProcessGDBRemotePacketMonitor(CommandInterpreter &interpreter) :
|
|
CommandObjectRaw (interpreter,
|
|
"process plugin packet monitor",
|
|
"Send a qRcmd packet through the GDB remote protocol and print the response."
|
|
"The argument passed to this command will be hex encoded into a valid 'qRcmd' packet, sent and the response will be printed.",
|
|
NULL)
|
|
{
|
|
}
|
|
|
|
~CommandObjectProcessGDBRemotePacketMonitor ()
|
|
{
|
|
}
|
|
|
|
bool
|
|
DoExecute (const char *command, CommandReturnObject &result) override
|
|
{
|
|
if (command == NULL || command[0] == '\0')
|
|
{
|
|
result.AppendErrorWithFormat ("'%s' takes a command string argument", m_cmd_name.c_str());
|
|
result.SetStatus (eReturnStatusFailed);
|
|
return false;
|
|
}
|
|
|
|
ProcessGDBRemote *process = (ProcessGDBRemote *)m_interpreter.GetExecutionContext().GetProcessPtr();
|
|
if (process)
|
|
{
|
|
StreamString packet;
|
|
packet.PutCString("qRcmd,");
|
|
packet.PutBytesAsRawHex8(command, strlen(command));
|
|
const char *packet_cstr = packet.GetString().c_str();
|
|
|
|
bool send_async = true;
|
|
StringExtractorGDBRemote response;
|
|
process->GetGDBRemote().SendPacketAndWaitForResponse(packet_cstr, response, send_async);
|
|
result.SetStatus (eReturnStatusSuccessFinishResult);
|
|
Stream &output_strm = result.GetOutputStream();
|
|
output_strm.Printf (" packet: %s\n", packet_cstr);
|
|
const std::string &response_str = response.GetStringRef();
|
|
|
|
if (response_str.empty())
|
|
output_strm.PutCString ("response: \nerror: UNIMPLEMENTED\n");
|
|
else
|
|
output_strm.Printf ("response: %s\n", response.GetStringRef().c_str());
|
|
}
|
|
return true;
|
|
}
|
|
};
|
|
|
|
class CommandObjectProcessGDBRemotePacket : public CommandObjectMultiword
|
|
{
|
|
private:
|
|
|
|
public:
|
|
CommandObjectProcessGDBRemotePacket(CommandInterpreter &interpreter) :
|
|
CommandObjectMultiword (interpreter,
|
|
"process plugin packet",
|
|
"Commands that deal with GDB remote packets.",
|
|
NULL)
|
|
{
|
|
LoadSubCommand ("history", CommandObjectSP (new CommandObjectProcessGDBRemotePacketHistory (interpreter)));
|
|
LoadSubCommand ("send", CommandObjectSP (new CommandObjectProcessGDBRemotePacketSend (interpreter)));
|
|
LoadSubCommand ("monitor", CommandObjectSP (new CommandObjectProcessGDBRemotePacketMonitor (interpreter)));
|
|
LoadSubCommand ("xfer-size", CommandObjectSP (new CommandObjectProcessGDBRemotePacketXferSize (interpreter)));
|
|
LoadSubCommand ("speed-test", CommandObjectSP (new CommandObjectProcessGDBRemoteSpeedTest (interpreter)));
|
|
}
|
|
|
|
~CommandObjectProcessGDBRemotePacket ()
|
|
{
|
|
}
|
|
};
|
|
|
|
class CommandObjectMultiwordProcessGDBRemote : public CommandObjectMultiword
|
|
{
|
|
public:
|
|
CommandObjectMultiwordProcessGDBRemote (CommandInterpreter &interpreter) :
|
|
CommandObjectMultiword (interpreter,
|
|
"process plugin",
|
|
"A set of commands for operating on a ProcessGDBRemote process.",
|
|
"process plugin <subcommand> [<subcommand-options>]")
|
|
{
|
|
LoadSubCommand ("packet", CommandObjectSP (new CommandObjectProcessGDBRemotePacket (interpreter)));
|
|
}
|
|
|
|
~CommandObjectMultiwordProcessGDBRemote ()
|
|
{
|
|
}
|
|
};
|
|
|
|
CommandObject *
|
|
ProcessGDBRemote::GetPluginCommandObject()
|
|
{
|
|
if (!m_command_sp)
|
|
m_command_sp.reset (new CommandObjectMultiwordProcessGDBRemote (GetTarget().GetDebugger().GetCommandInterpreter()));
|
|
return m_command_sp.get();
|
|
}
|