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llvm-project/lldb/source/Plugins/Platform/Linux/PlatformLinux.cpp

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//===-- PlatformLinux.cpp ---------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "lldb/lldb-python.h"
#include "PlatformLinux.h"
#include "lldb/Host/Config.h"
// C Includes
#include <stdio.h>
#ifndef LLDB_DISABLE_POSIX
#include <sys/utsname.h>
#endif
// C++ Includes
// Other libraries and framework includes
// Project includes
#include "lldb/Breakpoint/BreakpointLocation.h"
#include "lldb/Core/Debugger.h"
#include "lldb/Core/Error.h"
#include "lldb/Core/Log.h"
#include "lldb/Core/Module.h"
#include "lldb/Core/ModuleList.h"
#include "lldb/Core/ModuleSpec.h"
#include "lldb/Core/PluginManager.h"
#include "lldb/Core/State.h"
#include "lldb/Core/StreamString.h"
#include "lldb/Host/FileSpec.h"
#include "lldb/Host/HostInfo.h"
#include "lldb/Interpreter/OptionValueProperties.h"
#include "lldb/Interpreter/Property.h"
#include "lldb/Target/Target.h"
#include "lldb/Target/Process.h"
#if defined(__linux__)
#include "../../Process/Linux/NativeProcessLinux.h"
#endif
using namespace lldb;
using namespace lldb_private;
static uint32_t g_initialize_count = 0;
//------------------------------------------------------------------
/// Code to handle the PlatformLinux settings
//------------------------------------------------------------------
namespace
{
enum
{
ePropertyUseLlgsForLocal = 0,
};
const PropertyDefinition*
GetStaticPropertyDefinitions ()
{
static PropertyDefinition
g_properties[] =
{
{ "use-llgs-for-local" , OptionValue::eTypeBoolean, true, false, NULL, NULL, "Control whether the platform uses llgs for local debug sessions." },
{ NULL , OptionValue::eTypeInvalid, false, 0 , NULL, NULL, NULL }
};
// Allow environment variable to force using llgs-local.
if (getenv("PLATFORM_LINUX_FORCE_LLGS_LOCAL"))
g_properties[ePropertyUseLlgsForLocal].default_uint_value = true;
return g_properties;
}
}
class PlatformLinuxProperties : public Properties
{
public:
static ConstString &
GetSettingName ()
{
static ConstString g_setting_name("linux");
return g_setting_name;
}
PlatformLinuxProperties() :
Properties ()
{
m_collection_sp.reset (new OptionValueProperties(GetSettingName ()));
m_collection_sp->Initialize (GetStaticPropertyDefinitions ());
}
virtual
~PlatformLinuxProperties()
{
}
bool
GetUseLlgsForLocal() const
{
const uint32_t idx = ePropertyUseLlgsForLocal;
return m_collection_sp->GetPropertyAtIndexAsBoolean (NULL, idx, GetStaticPropertyDefinitions()[idx].default_uint_value != 0);
}
};
typedef std::shared_ptr<PlatformLinuxProperties> PlatformLinuxPropertiesSP;
static const PlatformLinuxPropertiesSP &
GetGlobalProperties()
{
static PlatformLinuxPropertiesSP g_settings_sp;
if (!g_settings_sp)
g_settings_sp.reset (new PlatformLinuxProperties ());
return g_settings_sp;
}
void
PlatformLinux::DebuggerInitialize (lldb_private::Debugger &debugger)
{
if (!PluginManager::GetSettingForPlatformPlugin (debugger, PlatformLinuxProperties::GetSettingName()))
{
const bool is_global_setting = true;
PluginManager::CreateSettingForPlatformPlugin (debugger,
GetGlobalProperties()->GetValueProperties(),
ConstString ("Properties for the PlatformLinux plug-in."),
is_global_setting);
}
}
//------------------------------------------------------------------
PlatformSP
PlatformLinux::CreateInstance (bool force, const ArchSpec *arch)
{
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PLATFORM));
if (log)
{
const char *arch_name;
if (arch && arch->GetArchitectureName ())
arch_name = arch->GetArchitectureName ();
else
arch_name = "<null>";
const char *triple_cstr = arch ? arch->GetTriple ().getTriple ().c_str() : "<null>";
log->Printf ("PlatformLinux::%s(force=%s, arch={%s,%s})", __FUNCTION__, force ? "true" : "false", arch_name, triple_cstr);
}
bool create = force;
if (create == false && arch && arch->IsValid())
{
const llvm::Triple &triple = arch->GetTriple();
switch (triple.getVendor())
{
case llvm::Triple::PC:
create = true;
break;
#if defined(__linux__)
// Only accept "unknown" for the vendor if the host is linux and
// it "unknown" wasn't specified (it was just returned because it
// was NOT specified_
case llvm::Triple::VendorType::UnknownVendor:
create = !arch->TripleVendorWasSpecified();
break;
#endif
default:
break;
}
if (create)
{
switch (triple.getOS())
{
case llvm::Triple::Linux:
break;
#if defined(__linux__)
// Only accept "unknown" for the OS if the host is linux and
// it "unknown" wasn't specified (it was just returned because it
// was NOT specified)
case llvm::Triple::OSType::UnknownOS:
create = !arch->TripleOSWasSpecified();
break;
#endif
default:
create = false;
break;
}
}
}
if (create)
{
if (log)
log->Printf ("PlatformLinux::%s() creating remote-linux platform", __FUNCTION__);
return PlatformSP(new PlatformLinux(false));
}
if (log)
log->Printf ("PlatformLinux::%s() aborting creation of remote-linux platform", __FUNCTION__);
return PlatformSP();
}
lldb_private::ConstString
PlatformLinux::GetPluginNameStatic (bool is_host)
{
if (is_host)
{
static ConstString g_host_name(Platform::GetHostPlatformName ());
return g_host_name;
}
else
{
static ConstString g_remote_name("remote-linux");
return g_remote_name;
}
}
const char *
PlatformLinux::GetPluginDescriptionStatic (bool is_host)
{
if (is_host)
return "Local Linux user platform plug-in.";
else
return "Remote Linux user platform plug-in.";
}
lldb_private::ConstString
PlatformLinux::GetPluginName()
{
return GetPluginNameStatic(IsHost());
}
void
PlatformLinux::Initialize ()
{
PlatformPOSIX::Initialize ();
if (g_initialize_count++ == 0)
{
#if defined(__linux__) && !defined(__ANDROID__)
PlatformSP default_platform_sp (new PlatformLinux(true));
default_platform_sp->SetSystemArchitecture(HostInfo::GetArchitecture());
Platform::SetHostPlatform (default_platform_sp);
#endif
PluginManager::RegisterPlugin(PlatformLinux::GetPluginNameStatic(false),
PlatformLinux::GetPluginDescriptionStatic(false),
PlatformLinux::CreateInstance,
PlatformLinux::DebuggerInitialize);
}
}
void
PlatformLinux::Terminate ()
{
if (g_initialize_count > 0)
{
if (--g_initialize_count == 0)
{
PluginManager::UnregisterPlugin (PlatformLinux::CreateInstance);
}
}
PlatformPOSIX::Terminate ();
}
Error
PlatformLinux::ResolveExecutable (const ModuleSpec &ms,
lldb::ModuleSP &exe_module_sp,
const FileSpecList *module_search_paths_ptr)
{
Error error;
// Nothing special to do here, just use the actual file and architecture
char exe_path[PATH_MAX];
ModuleSpec resolved_module_spec (ms);
if (IsHost())
{
// If we have "ls" as the exe_file, resolve the executable location based on
// the current path variables
if (!resolved_module_spec.GetFileSpec().Exists())
{
resolved_module_spec.GetFileSpec().GetPath(exe_path, sizeof(exe_path));
resolved_module_spec.GetFileSpec().SetFile(exe_path, true);
}
if (!resolved_module_spec.GetFileSpec().Exists())
resolved_module_spec.GetFileSpec().ResolveExecutableLocation ();
if (resolved_module_spec.GetFileSpec().Exists())
error.Clear();
else
{
error.SetErrorStringWithFormat("unable to find executable for '%s'", resolved_module_spec.GetFileSpec().GetPath().c_str());
}
}
else
{
if (m_remote_platform_sp)
{
error = m_remote_platform_sp->ResolveExecutable (ms,
exe_module_sp,
NULL);
}
else
{
// We may connect to a process and use the provided executable (Don't use local $PATH).
if (resolved_module_spec.GetFileSpec().Exists())
error.Clear();
else
error.SetErrorStringWithFormat("the platform is not currently connected, and '%s' doesn't exist in the system root.", exe_path);
}
}
if (error.Success())
{
if (resolved_module_spec.GetArchitecture().IsValid())
{
error = ModuleList::GetSharedModule (resolved_module_spec,
exe_module_sp,
NULL,
NULL,
NULL);
if (error.Fail())
{
// If we failed, it may be because the vendor and os aren't known. If that is the
// case, try setting them to the host architecture and give it another try.
llvm::Triple &module_triple = resolved_module_spec.GetArchitecture().GetTriple();
bool is_vendor_specified = (module_triple.getVendor() != llvm::Triple::UnknownVendor);
bool is_os_specified = (module_triple.getOS() != llvm::Triple::UnknownOS);
if (!is_vendor_specified || !is_os_specified)
{
const llvm::Triple &host_triple = HostInfo::GetArchitecture(HostInfo::eArchKindDefault).GetTriple();
if (!is_vendor_specified)
module_triple.setVendorName (host_triple.getVendorName());
if (!is_os_specified)
module_triple.setOSName (host_triple.getOSName());
error = ModuleList::GetSharedModule (resolved_module_spec,
exe_module_sp,
NULL,
NULL,
NULL);
}
}
// TODO find out why exe_module_sp might be NULL
if (!exe_module_sp || exe_module_sp->GetObjectFile() == NULL)
{
exe_module_sp.reset();
error.SetErrorStringWithFormat ("'%s' doesn't contain the architecture %s",
resolved_module_spec.GetFileSpec().GetPath().c_str(),
resolved_module_spec.GetArchitecture().GetArchitectureName());
}
}
else
{
// No valid architecture was specified, ask the platform for
// the architectures that we should be using (in the correct order)
// and see if we can find a match that way
StreamString arch_names;
for (uint32_t idx = 0; GetSupportedArchitectureAtIndex (idx, resolved_module_spec.GetArchitecture()); ++idx)
{
error = ModuleList::GetSharedModule (resolved_module_spec,
exe_module_sp,
NULL,
NULL,
NULL);
// Did we find an executable using one of the
if (error.Success())
{
if (exe_module_sp && exe_module_sp->GetObjectFile())
break;
else
error.SetErrorToGenericError();
}
if (idx > 0)
arch_names.PutCString (", ");
arch_names.PutCString (resolved_module_spec.GetArchitecture().GetArchitectureName());
}
if (error.Fail() || !exe_module_sp)
{
if (resolved_module_spec.GetFileSpec().Readable())
{
error.SetErrorStringWithFormat ("'%s' doesn't contain any '%s' platform architectures: %s",
resolved_module_spec.GetFileSpec().GetPath().c_str(),
GetPluginName().GetCString(),
arch_names.GetString().c_str());
}
else
{
error.SetErrorStringWithFormat("'%s' is not readable", resolved_module_spec.GetFileSpec().GetPath().c_str());
}
}
}
}
return error;
}
Error
PlatformLinux::GetFileWithUUID (const FileSpec &platform_file,
const UUID *uuid_ptr, FileSpec &local_file)
{
if (IsRemote())
{
if (m_remote_platform_sp)
return m_remote_platform_sp->GetFileWithUUID (platform_file, uuid_ptr, local_file);
}
// Default to the local case
local_file = platform_file;
return Error();
}
//------------------------------------------------------------------
/// Default Constructor
//------------------------------------------------------------------
PlatformLinux::PlatformLinux (bool is_host) :
PlatformPOSIX(is_host) // This is the local host platform
{
}
//------------------------------------------------------------------
/// Destructor.
///
/// The destructor is virtual since this class is designed to be
/// inherited from by the plug-in instance.
//------------------------------------------------------------------
PlatformLinux::~PlatformLinux()
{
}
bool
PlatformLinux::GetProcessInfo (lldb::pid_t pid, ProcessInstanceInfo &process_info)
{
bool success = false;
if (IsHost())
{
success = Platform::GetProcessInfo (pid, process_info);
}
else
{
if (m_remote_platform_sp)
success = m_remote_platform_sp->GetProcessInfo (pid, process_info);
}
return success;
}
uint32_t
PlatformLinux::FindProcesses (const ProcessInstanceInfoMatch &match_info,
ProcessInstanceInfoList &process_infos)
{
uint32_t match_count = 0;
if (IsHost())
{
// Let the base class figure out the host details
match_count = Platform::FindProcesses (match_info, process_infos);
}
else
{
// If we are remote, we can only return results if we are connected
if (m_remote_platform_sp)
match_count = m_remote_platform_sp->FindProcesses (match_info, process_infos);
}
return match_count;
}
bool
PlatformLinux::GetSupportedArchitectureAtIndex (uint32_t idx, ArchSpec &arch)
{
if (idx == 0)
{
arch = HostInfo::GetArchitecture(HostInfo::eArchKindDefault);
return arch.IsValid();
}
else if (idx == 1)
{
// If the default host architecture is 64-bit, look for a 32-bit variant
ArchSpec hostArch = HostInfo::GetArchitecture(HostInfo::eArchKindDefault);
if (hostArch.IsValid() && hostArch.GetTriple().isArch64Bit())
{
arch = HostInfo::GetArchitecture(HostInfo::eArchKind32);
return arch.IsValid();
}
}
return false;
}
void
PlatformLinux::GetStatus (Stream &strm)
{
Platform::GetStatus(strm);
#ifndef LLDB_DISABLE_POSIX
// Display local kernel information only when we are running in host mode.
// Otherwise, we would end up printing non-Linux information (when running
// on Mac OS for example).
if (IsHost())
{
struct utsname un;
if (uname(&un))
return;
strm.Printf (" Kernel: %s\n", un.sysname);
strm.Printf (" Release: %s\n", un.release);
strm.Printf (" Version: %s\n", un.version);
}
#endif
}
size_t
PlatformLinux::GetSoftwareBreakpointTrapOpcode (Target &target,
BreakpointSite *bp_site)
{
ArchSpec arch = target.GetArchitecture();
const uint8_t *trap_opcode = NULL;
size_t trap_opcode_size = 0;
switch (arch.GetMachine())
{
default:
assert(false && "CPU type not supported!");
break;
case llvm::Triple::aarch64:
{
static const uint8_t g_aarch64_opcode[] = { 0x00, 0x00, 0x20, 0xd4 };
trap_opcode = g_aarch64_opcode;
trap_opcode_size = sizeof(g_aarch64_opcode);
}
break;
case llvm::Triple::x86:
case llvm::Triple::x86_64:
{
static const uint8_t g_i386_breakpoint_opcode[] = { 0xCC };
trap_opcode = g_i386_breakpoint_opcode;
trap_opcode_size = sizeof(g_i386_breakpoint_opcode);
}
break;
case llvm::Triple::hexagon:
{
static const uint8_t g_hex_opcode[] = { 0x0c, 0xdb, 0x00, 0x54 };
trap_opcode = g_hex_opcode;
trap_opcode_size = sizeof(g_hex_opcode);
}
break;
case llvm::Triple::arm:
{
// The ARM reference recommends the use of 0xe7fddefe and 0xdefe
// but the linux kernel does otherwise.
static const uint8_t g_arm_breakpoint_opcode[] = { 0xf0, 0x01, 0xf0, 0xe7 };
static const uint8_t g_thumb_breakpoint_opcode[] = { 0x01, 0xde };
lldb::BreakpointLocationSP bp_loc_sp (bp_site->GetOwnerAtIndex (0));
AddressClass addr_class = eAddressClassUnknown;
if (bp_loc_sp)
addr_class = bp_loc_sp->GetAddress ().GetAddressClass ();
if (addr_class == eAddressClassCodeAlternateISA
|| (addr_class == eAddressClassUnknown
&& bp_loc_sp->GetAddress().GetOffset() & 1))
{
trap_opcode = g_thumb_breakpoint_opcode;
trap_opcode_size = sizeof(g_thumb_breakpoint_opcode);
}
else
{
trap_opcode = g_arm_breakpoint_opcode;
trap_opcode_size = sizeof(g_arm_breakpoint_opcode);
}
}
break;
case llvm::Triple::mips64:
{
static const uint8_t g_hex_opcode[] = { 0x00, 0x00, 0x00, 0x0d };
trap_opcode = g_hex_opcode;
trap_opcode_size = sizeof(g_hex_opcode);
}
break;
}
if (bp_site->SetTrapOpcode(trap_opcode, trap_opcode_size))
return trap_opcode_size;
return 0;
}
int32_t
PlatformLinux::GetResumeCountForLaunchInfo (ProcessLaunchInfo &launch_info)
{
int32_t resume_count = 0;
// Always resume past the initial stop when we use eLaunchFlagDebug
if (launch_info.GetFlags ().Test (eLaunchFlagDebug))
{
// Resume past the stop for the final exec into the true inferior.
++resume_count;
}
// If we're not launching a shell, we're done.
const FileSpec &shell = launch_info.GetShell();
if (!shell)
return resume_count;
std::string shell_string = shell.GetPath();
// We're in a shell, so for sure we have to resume past the shell exec.
++resume_count;
// Figure out what shell we're planning on using.
const char *shell_name = strrchr (shell_string.c_str(), '/');
if (shell_name == NULL)
shell_name = shell_string.c_str();
else
shell_name++;
if (strcmp (shell_name, "csh") == 0
|| strcmp (shell_name, "tcsh") == 0
|| strcmp (shell_name, "zsh") == 0
|| strcmp (shell_name, "sh") == 0)
{
// These shells seem to re-exec themselves. Add another resume.
++resume_count;
}
return resume_count;
}
bool
PlatformLinux::UseLlgsForLocalDebugging ()
{
PlatformLinuxPropertiesSP properties_sp = GetGlobalProperties ();
assert (properties_sp && "global properties shared pointer is null");
return properties_sp ? properties_sp->GetUseLlgsForLocal () : false;
}
bool
PlatformLinux::CanDebugProcess ()
{
if (IsHost ())
{
// The platform only does local debugging (i.e. uses llgs) when the setting indicates we do that.
// Otherwise, we'll use ProcessLinux/ProcessPOSIX to handle with ProcessMonitor.
return UseLlgsForLocalDebugging ();
}
else
{
// If we're connected, we can debug.
return IsConnected ();
}
}
// For local debugging, Linux will override the debug logic to use llgs-launch rather than
// lldb-launch, llgs-attach. This differs from current lldb-launch, debugserver-attach
// approach on MacOSX.
lldb::ProcessSP
PlatformLinux::DebugProcess (ProcessLaunchInfo &launch_info,
Debugger &debugger,
Target *target, // Can be NULL, if NULL create a new target, else use existing one
Error &error)
{
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PLATFORM));
if (log)
log->Printf ("PlatformLinux::%s entered (target %p)", __FUNCTION__, static_cast<void*>(target));
// If we're a remote host, use standard behavior from parent class.
if (!IsHost ())
return PlatformPOSIX::DebugProcess (launch_info, debugger, target, error);
//
// For local debugging, we'll insist on having ProcessGDBRemote create the process.
//
ProcessSP process_sp;
// Ensure we're using llgs for local debugging.
if (!UseLlgsForLocalDebugging ())
{
assert (false && "we're trying to debug a local process but platform.plugin.linux.use-llgs-for-local is false, should never get here");
error.SetErrorString ("attempted to start gdb-remote-based debugging for local process but platform.plugin.linux.use-llgs-for-local is false");
return process_sp;
}
// Make sure we stop at the entry point
launch_info.GetFlags ().Set (eLaunchFlagDebug);
// We always launch the process we are going to debug in a separate process
// group, since then we can handle ^C interrupts ourselves w/o having to worry
// about the target getting them as well.
launch_info.SetLaunchInSeparateProcessGroup(true);
// Ensure we have a target.
if (target == nullptr)
{
if (log)
log->Printf ("PlatformLinux::%s creating new target", __FUNCTION__);
TargetSP new_target_sp;
error = debugger.GetTargetList().CreateTarget (debugger,
nullptr,
nullptr,
false,
nullptr,
new_target_sp);
if (error.Fail ())
{
if (log)
log->Printf ("PlatformLinux::%s failed to create new target: %s", __FUNCTION__, error.AsCString ());
return process_sp;
}
target = new_target_sp.get();
if (!target)
{
error.SetErrorString ("CreateTarget() returned nullptr");
if (log)
log->Printf ("PlatformLinux::%s failed: %s", __FUNCTION__, error.AsCString ());
return process_sp;
}
}
else
{
if (log)
log->Printf ("PlatformLinux::%s using provided target", __FUNCTION__);
}
// Mark target as currently selected target.
debugger.GetTargetList().SetSelectedTarget(target);
// Now create the gdb-remote process.
if (log)
log->Printf ("PlatformLinux::%s having target create process with gdb-remote plugin", __FUNCTION__);
process_sp = target->CreateProcess (launch_info.GetListenerForProcess(debugger), "gdb-remote", nullptr);
if (!process_sp)
{
error.SetErrorString ("CreateProcess() failed for gdb-remote process");
if (log)
log->Printf ("PlatformLinux::%s failed: %s", __FUNCTION__, error.AsCString ());
return process_sp;
}
else
{
if (log)
log->Printf ("PlatformLinux::%s successfully created process", __FUNCTION__);
}
// Set the unix signals properly.
process_sp->SetUnixSignals (Host::GetUnixSignals ());
// Adjust launch for a hijacker.
ListenerSP listener_sp;
#if 0
if (!launch_info.GetHijackListener ())
{
if (log)
log->Printf ("PlatformLinux::%s setting up hijacker", __FUNCTION__);
listener_sp.reset (new Listener("lldb.PlatformLinux.DebugProcess.hijack"));
launch_info.SetHijackListener (listener_sp);
process_sp->HijackProcessEvents (listener_sp.get ());
}
#endif
// Log file actions.
if (log)
{
log->Printf ("PlatformLinux::%s launching process with the following file actions:", __FUNCTION__);
StreamString stream;
size_t i = 0;
const FileAction *file_action;
while ((file_action = launch_info.GetFileActionAtIndex (i++)) != nullptr)
{
file_action->Dump (stream);
log->PutCString (stream.GetString().c_str ());
stream.Clear();
}
}
// Do the launch.
error = process_sp->Launch(launch_info);
if (error.Success ())
{
// Handle the hijacking of process events.
if (listener_sp)
{
const StateType state = process_sp->WaitForProcessToStop (NULL, NULL, false, listener_sp.get());
process_sp->RestoreProcessEvents();
if (state == eStateStopped)
{
if (log)
log->Printf ("PlatformLinux::%s pid %" PRIu64 " state %s\n",
__FUNCTION__, process_sp->GetID (), StateAsCString (state));
}
else
{
if (log)
log->Printf ("PlatformLinux::%s pid %" PRIu64 " state is not stopped - %s\n",
__FUNCTION__, process_sp->GetID (), StateAsCString (state));
}
}
// Hook up process PTY if we have one (which we should for local debugging with llgs).
int pty_fd = launch_info.GetPTY().ReleaseMasterFileDescriptor();
if (pty_fd != lldb_utility::PseudoTerminal::invalid_fd)
{
process_sp->SetSTDIOFileDescriptor(pty_fd);
if (log)
log->Printf ("PlatformLinux::%s pid %" PRIu64 " hooked up STDIO pty to process", __FUNCTION__, process_sp->GetID ());
}
else
{
if (log)
log->Printf ("PlatformLinux::%s pid %" PRIu64 " not using process STDIO pty", __FUNCTION__, process_sp->GetID ());
}
}
else
{
if (log)
log->Printf ("PlatformLinux::%s process launch failed: %s", __FUNCTION__, error.AsCString ());
// FIXME figure out appropriate cleanup here. Do we delete the target? Do we delete the process? Does our caller do that?
}
return process_sp;
}
void
PlatformLinux::CalculateTrapHandlerSymbolNames ()
{
m_trap_handlers.push_back (ConstString ("_sigtramp"));
}
Error
PlatformLinux::LaunchNativeProcess (
ProcessLaunchInfo &launch_info,
lldb_private::NativeProcessProtocol::NativeDelegate &native_delegate,
NativeProcessProtocolSP &process_sp)
{
#if !defined(__linux__)
return Error("Only implemented on Linux hosts");
#else
if (!IsHost ())
return Error("PlatformLinux::%s (): cannot launch a debug process when not the host", __FUNCTION__);
// Retrieve the exe module.
lldb::ModuleSP exe_module_sp;
ModuleSpec exe_module_spec(launch_info.GetExecutableFile(), launch_info.GetArchitecture());
Error error = ResolveExecutable (
exe_module_spec,
exe_module_sp,
NULL);
if (!error.Success ())
return error;
if (!exe_module_sp)
return Error("exe_module_sp could not be resolved for %s", launch_info.GetExecutableFile ().GetPath ().c_str ());
// Launch it for debugging
error = NativeProcessLinux::LaunchProcess (
exe_module_sp.get (),
launch_info,
native_delegate,
process_sp);
return error;
#endif
}
Error
PlatformLinux::AttachNativeProcess (lldb::pid_t pid,
lldb_private::NativeProcessProtocol::NativeDelegate &native_delegate,
NativeProcessProtocolSP &process_sp)
{
#if !defined(__linux__)
return Error("Only implemented on Linux hosts");
#else
if (!IsHost ())
return Error("PlatformLinux::%s (): cannot attach to a debug process when not the host", __FUNCTION__);
// Launch it for debugging
return NativeProcessLinux::AttachToProcess (pid, native_delegate, process_sp);
#endif
}
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