715 lines
22 KiB
C++
715 lines
22 KiB
C++
//===-- PlatformFreeBSD.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 "PlatformFreeBSD.h"
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#include "lldb/Host/Config.h"
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// C Includes
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#include <stdio.h>
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#ifndef LLDB_DISABLE_POSIX
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#include <sys/utsname.h>
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#endif
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// C++ Includes
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// Other libraries and framework includes
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// Project includes
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#include "lldb/Breakpoint/BreakpointLocation.h"
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#include "lldb/Breakpoint/BreakpointSite.h"
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#include "lldb/Core/Error.h"
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#include "lldb/Core/Debugger.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/Host/Host.h"
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#include "lldb/Host/HostInfo.h"
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#include "lldb/Target/Process.h"
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using namespace lldb;
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using namespace lldb_private;
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using namespace lldb_private::platform_freebsd;
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PlatformSP
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PlatformFreeBSD::CreateInstance(bool force, const ArchSpec *arch)
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{
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// The only time we create an instance is when we are creating a remote
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// freebsd platform
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const bool is_host = false;
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bool create = force;
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if (create == false && arch && arch->IsValid())
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{
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const llvm::Triple &triple = arch->GetTriple();
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switch (triple.getOS())
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{
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case llvm::Triple::FreeBSD:
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create = true;
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break;
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#if defined(__FreeBSD__) || defined(__OpenBSD__)
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// Only accept "unknown" for the OS if the host is BSD and
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// it "unknown" wasn't specified (it was just returned because it
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// was NOT specified)
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case llvm::Triple::OSType::UnknownOS:
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create = !arch->TripleOSWasSpecified();
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break;
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#endif
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default:
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break;
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}
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}
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if (create)
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return PlatformSP(new PlatformFreeBSD (is_host));
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return PlatformSP();
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}
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ConstString
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PlatformFreeBSD::GetPluginNameStatic(bool is_host)
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{
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if (is_host)
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{
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static ConstString g_host_name(Platform::GetHostPlatformName ());
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return g_host_name;
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}
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else
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{
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static ConstString g_remote_name("remote-freebsd");
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return g_remote_name;
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}
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}
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const char *
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PlatformFreeBSD::GetDescriptionStatic (bool is_host)
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{
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if (is_host)
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return "Local FreeBSD user platform plug-in.";
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else
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return "Remote FreeBSD user platform plug-in.";
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}
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static uint32_t g_initialize_count = 0;
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void
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PlatformFreeBSD::Initialize ()
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{
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Platform::Initialize ();
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if (g_initialize_count++ == 0)
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{
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#if defined (__FreeBSD__)
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// Force a host flag to true for the default platform object.
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PlatformSP default_platform_sp (new PlatformFreeBSD(true));
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default_platform_sp->SetSystemArchitecture(HostInfo::GetArchitecture());
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Platform::SetHostPlatform (default_platform_sp);
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#endif
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PluginManager::RegisterPlugin(PlatformFreeBSD::GetPluginNameStatic(false),
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PlatformFreeBSD::GetDescriptionStatic(false),
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PlatformFreeBSD::CreateInstance);
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}
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}
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void
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PlatformFreeBSD::Terminate ()
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{
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if (g_initialize_count > 0 && --g_initialize_count == 0)
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PluginManager::UnregisterPlugin (PlatformFreeBSD::CreateInstance);
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Platform::Terminate ();
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}
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bool
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PlatformFreeBSD::GetModuleSpec (const FileSpec& module_file_spec,
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const ArchSpec& arch,
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ModuleSpec &module_spec)
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{
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if (m_remote_platform_sp)
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return m_remote_platform_sp->GetModuleSpec (module_file_spec, arch, module_spec);
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return Platform::GetModuleSpec (module_file_spec, arch, module_spec);
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}
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Error
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PlatformFreeBSD::RunShellCommand(const char *command,
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const FileSpec &working_dir,
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int *status_ptr,
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int *signo_ptr,
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std::string *command_output,
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uint32_t timeout_sec)
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{
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if (IsHost())
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return Host::RunShellCommand(command, working_dir, status_ptr, signo_ptr, command_output, timeout_sec);
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else
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{
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if (m_remote_platform_sp)
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return m_remote_platform_sp->RunShellCommand(command, working_dir, status_ptr, signo_ptr, command_output, timeout_sec);
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else
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return Error("unable to run a remote command without a platform");
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}
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}
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Error
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PlatformFreeBSD::ResolveExecutable (const ModuleSpec &module_spec,
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lldb::ModuleSP &exe_module_sp,
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const FileSpecList *module_search_paths_ptr)
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{
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Error error;
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// Nothing special to do here, just use the actual file and architecture
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char exe_path[PATH_MAX];
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ModuleSpec resolved_module_spec(module_spec);
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if (IsHost())
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{
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// If we have "ls" as the module_spec's file, resolve the executable location based on
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// the current path variables
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if (!resolved_module_spec.GetFileSpec().Exists())
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{
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module_spec.GetFileSpec().GetPath(exe_path, sizeof(exe_path));
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resolved_module_spec.GetFileSpec().SetFile(exe_path, true);
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}
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if (!resolved_module_spec.GetFileSpec().Exists())
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resolved_module_spec.GetFileSpec().ResolveExecutableLocation ();
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if (resolved_module_spec.GetFileSpec().Exists())
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error.Clear();
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else
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{
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error.SetErrorStringWithFormat("unable to find executable for '%s'", resolved_module_spec.GetFileSpec().GetPath().c_str());
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}
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}
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else
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{
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if (m_remote_platform_sp)
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{
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error = GetCachedExecutable (resolved_module_spec, exe_module_sp, module_search_paths_ptr, *m_remote_platform_sp);
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}
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else
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{
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// We may connect to a process and use the provided executable (Don't use local $PATH).
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// Resolve any executable within a bundle on MacOSX
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Host::ResolveExecutableInBundle (resolved_module_spec.GetFileSpec());
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if (resolved_module_spec.GetFileSpec().Exists())
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{
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error.Clear();
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}
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else
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{
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error.SetErrorStringWithFormat("the platform is not currently connected, and '%s' doesn't exist in the system root.", resolved_module_spec.GetFileSpec().GetPath().c_str());
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}
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}
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}
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if (error.Success())
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{
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if (resolved_module_spec.GetArchitecture().IsValid())
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{
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error = ModuleList::GetSharedModule (resolved_module_spec,
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exe_module_sp,
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module_search_paths_ptr,
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NULL,
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NULL);
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if (!exe_module_sp || exe_module_sp->GetObjectFile() == NULL)
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{
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exe_module_sp.reset();
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error.SetErrorStringWithFormat ("'%s' doesn't contain the architecture %s",
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resolved_module_spec.GetFileSpec().GetPath().c_str(),
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resolved_module_spec.GetArchitecture().GetArchitectureName());
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}
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}
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else
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{
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// No valid architecture was specified, ask the platform for
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// the architectures that we should be using (in the correct order)
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// and see if we can find a match that way
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StreamString arch_names;
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for (uint32_t idx = 0; GetSupportedArchitectureAtIndex (idx, resolved_module_spec.GetArchitecture()); ++idx)
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{
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error = ModuleList::GetSharedModule (resolved_module_spec,
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exe_module_sp,
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module_search_paths_ptr,
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NULL,
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NULL);
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// Did we find an executable using one of the
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if (error.Success())
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{
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if (exe_module_sp && exe_module_sp->GetObjectFile())
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break;
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else
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error.SetErrorToGenericError();
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}
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if (idx > 0)
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arch_names.PutCString (", ");
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arch_names.PutCString (resolved_module_spec.GetArchitecture().GetArchitectureName());
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}
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if (error.Fail() || !exe_module_sp)
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{
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if (resolved_module_spec.GetFileSpec().Readable())
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{
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error.SetErrorStringWithFormat ("'%s' doesn't contain any '%s' platform architectures: %s",
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resolved_module_spec.GetFileSpec().GetPath().c_str(),
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GetPluginName().GetCString(),
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arch_names.GetString().c_str());
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}
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else
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{
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error.SetErrorStringWithFormat("'%s' is not readable", resolved_module_spec.GetFileSpec().GetPath().c_str());
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}
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}
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}
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}
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return error;
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}
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// From PlatformMacOSX only
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Error
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PlatformFreeBSD::GetFileWithUUID (const FileSpec &platform_file,
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const UUID *uuid_ptr,
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FileSpec &local_file)
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{
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if (IsRemote())
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{
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if (m_remote_platform_sp)
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return m_remote_platform_sp->GetFileWithUUID (platform_file, uuid_ptr, local_file);
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}
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// Default to the local case
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local_file = platform_file;
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return Error();
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}
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//------------------------------------------------------------------
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/// Default Constructor
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//------------------------------------------------------------------
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PlatformFreeBSD::PlatformFreeBSD (bool is_host) :
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Platform(is_host),
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m_remote_platform_sp()
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{
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}
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//------------------------------------------------------------------
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/// Destructor.
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///
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/// The destructor is virtual since this class is designed to be
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/// inherited from by the plug-in instance.
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//------------------------------------------------------------------
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PlatformFreeBSD::~PlatformFreeBSD()
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{
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}
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//TODO:VK: inherit PlatformPOSIX
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bool
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PlatformFreeBSD::GetRemoteOSVersion ()
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{
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if (m_remote_platform_sp)
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return m_remote_platform_sp->GetOSVersion (m_major_os_version,
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m_minor_os_version,
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m_update_os_version);
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return false;
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}
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bool
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PlatformFreeBSD::GetRemoteOSBuildString (std::string &s)
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{
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if (m_remote_platform_sp)
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return m_remote_platform_sp->GetRemoteOSBuildString (s);
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s.clear();
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return false;
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}
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bool
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PlatformFreeBSD::GetRemoteOSKernelDescription (std::string &s)
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{
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if (m_remote_platform_sp)
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return m_remote_platform_sp->GetRemoteOSKernelDescription (s);
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s.clear();
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return false;
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}
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// Remote Platform subclasses need to override this function
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ArchSpec
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PlatformFreeBSD::GetRemoteSystemArchitecture ()
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{
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if (m_remote_platform_sp)
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return m_remote_platform_sp->GetRemoteSystemArchitecture ();
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return ArchSpec();
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}
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const char *
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PlatformFreeBSD::GetHostname ()
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{
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if (IsHost())
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return Platform::GetHostname();
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if (m_remote_platform_sp)
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return m_remote_platform_sp->GetHostname ();
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return NULL;
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}
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bool
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PlatformFreeBSD::IsConnected () const
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{
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if (IsHost())
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return true;
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else if (m_remote_platform_sp)
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return m_remote_platform_sp->IsConnected();
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return false;
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}
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Error
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PlatformFreeBSD::ConnectRemote (Args& args)
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{
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Error error;
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if (IsHost())
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{
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error.SetErrorStringWithFormat ("can't connect to the host platform '%s', always connected", GetPluginName().GetCString());
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}
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else
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{
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if (!m_remote_platform_sp)
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m_remote_platform_sp = Platform::Create (ConstString("remote-gdb-server"), error);
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if (m_remote_platform_sp)
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{
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if (error.Success())
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{
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if (m_remote_platform_sp)
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{
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error = m_remote_platform_sp->ConnectRemote (args);
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}
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else
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{
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error.SetErrorString ("\"platform connect\" takes a single argument: <connect-url>");
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}
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}
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}
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else
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error.SetErrorString ("failed to create a 'remote-gdb-server' platform");
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if (error.Fail())
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m_remote_platform_sp.reset();
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}
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return error;
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}
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Error
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PlatformFreeBSD::DisconnectRemote ()
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{
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Error error;
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if (IsHost())
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{
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error.SetErrorStringWithFormat ("can't disconnect from the host platform '%s', always connected", GetPluginName().GetCString());
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}
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else
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{
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if (m_remote_platform_sp)
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error = m_remote_platform_sp->DisconnectRemote ();
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else
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error.SetErrorString ("the platform is not currently connected");
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}
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return error;
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}
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bool
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PlatformFreeBSD::GetProcessInfo (lldb::pid_t pid, ProcessInstanceInfo &process_info)
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{
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bool success = false;
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if (IsHost())
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{
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success = Platform::GetProcessInfo (pid, process_info);
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}
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else if (m_remote_platform_sp)
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{
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success = m_remote_platform_sp->GetProcessInfo (pid, process_info);
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}
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return success;
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}
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uint32_t
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PlatformFreeBSD::FindProcesses (const ProcessInstanceInfoMatch &match_info,
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ProcessInstanceInfoList &process_infos)
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{
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uint32_t match_count = 0;
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if (IsHost())
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{
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// Let the base class figure out the host details
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match_count = Platform::FindProcesses (match_info, process_infos);
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}
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else
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{
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// If we are remote, we can only return results if we are connected
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if (m_remote_platform_sp)
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match_count = m_remote_platform_sp->FindProcesses (match_info, process_infos);
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}
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return match_count;
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}
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const char *
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PlatformFreeBSD::GetUserName (uint32_t uid)
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{
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// Check the cache in Platform in case we have already looked this uid up
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const char *user_name = Platform::GetUserName(uid);
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if (user_name)
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return user_name;
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if (IsRemote() && m_remote_platform_sp)
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return m_remote_platform_sp->GetUserName(uid);
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return NULL;
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}
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const char *
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PlatformFreeBSD::GetGroupName (uint32_t gid)
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{
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const char *group_name = Platform::GetGroupName(gid);
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if (group_name)
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return group_name;
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if (IsRemote() && m_remote_platform_sp)
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return m_remote_platform_sp->GetGroupName(gid);
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return NULL;
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}
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Error
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PlatformFreeBSD::GetSharedModule (const ModuleSpec &module_spec,
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Process* process,
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ModuleSP &module_sp,
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const FileSpecList *module_search_paths_ptr,
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ModuleSP *old_module_sp_ptr,
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bool *did_create_ptr)
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{
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Error error;
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module_sp.reset();
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if (IsRemote())
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{
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// If we have a remote platform always, let it try and locate
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// the shared module first.
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if (m_remote_platform_sp)
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{
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error = m_remote_platform_sp->GetSharedModule (module_spec,
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process,
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module_sp,
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module_search_paths_ptr,
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old_module_sp_ptr,
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did_create_ptr);
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}
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}
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if (!module_sp)
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{
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// Fall back to the local platform and find the file locally
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error = Platform::GetSharedModule (module_spec,
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process,
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module_sp,
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module_search_paths_ptr,
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old_module_sp_ptr,
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did_create_ptr);
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}
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if (module_sp)
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module_sp->SetPlatformFileSpec(module_spec.GetFileSpec());
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return error;
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}
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bool
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PlatformFreeBSD::GetSupportedArchitectureAtIndex (uint32_t idx, ArchSpec &arch)
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{
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if (IsHost())
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{
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ArchSpec hostArch = HostInfo::GetArchitecture(HostInfo::eArchKindDefault);
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if (hostArch.GetTriple().isOSFreeBSD())
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{
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if (idx == 0)
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{
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arch = hostArch;
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return arch.IsValid();
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}
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else if (idx == 1)
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{
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// If the default host architecture is 64-bit, look for a 32-bit variant
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if (hostArch.IsValid() && hostArch.GetTriple().isArch64Bit())
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{
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arch = HostInfo::GetArchitecture(HostInfo::eArchKind32);
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return arch.IsValid();
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}
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}
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}
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}
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else
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{
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if (m_remote_platform_sp)
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return m_remote_platform_sp->GetSupportedArchitectureAtIndex(idx, arch);
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llvm::Triple triple;
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// Set the OS to FreeBSD
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triple.setOS(llvm::Triple::FreeBSD);
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// Set the architecture
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switch (idx)
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{
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case 0: triple.setArchName("x86_64"); break;
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case 1: triple.setArchName("i386"); break;
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case 2: triple.setArchName("aarch64"); break;
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case 3: triple.setArchName("arm"); break;
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case 4: triple.setArchName("mips64"); break;
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case 5: triple.setArchName("mips"); break;
|
|
case 6: triple.setArchName("ppc64"); break;
|
|
case 7: triple.setArchName("ppc"); break;
|
|
default: return false;
|
|
}
|
|
// Leave the vendor as "llvm::Triple:UnknownVendor" and don't specify the vendor by
|
|
// calling triple.SetVendorName("unknown") so that it is a "unspecified unknown".
|
|
// This means when someone calls triple.GetVendorName() it will return an empty string
|
|
// which indicates that the vendor can be set when two architectures are merged
|
|
|
|
// Now set the triple into "arch" and return true
|
|
arch.SetTriple(triple);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void
|
|
PlatformFreeBSD::GetStatus (Stream &strm)
|
|
{
|
|
#ifndef LLDB_DISABLE_POSIX
|
|
struct utsname un;
|
|
|
|
strm << " Host: ";
|
|
|
|
::memset(&un, 0, sizeof(utsname));
|
|
if (uname(&un) == -1)
|
|
strm << "FreeBSD" << '\n';
|
|
|
|
strm << un.sysname << ' ' << un.release;
|
|
if (un.nodename[0] != '\0')
|
|
strm << " (" << un.nodename << ')';
|
|
strm << '\n';
|
|
|
|
// Dump a common information about the platform status.
|
|
strm << "Host: " << un.sysname << ' ' << un.release << ' ' << un.version << '\n';
|
|
#endif
|
|
|
|
Platform::GetStatus(strm);
|
|
}
|
|
|
|
size_t
|
|
PlatformFreeBSD::GetSoftwareBreakpointTrapOpcode (Target &target, BreakpointSite *bp_site)
|
|
{
|
|
switch (target.GetArchitecture().GetMachine())
|
|
{
|
|
case llvm::Triple::arm:
|
|
{
|
|
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 == eAddressClassUnknown && (bp_loc_sp->GetAddress().GetFileAddress() & 1))
|
|
addr_class = eAddressClassCodeAlternateISA;
|
|
}
|
|
|
|
if (addr_class == eAddressClassCodeAlternateISA)
|
|
{
|
|
// TODO: Enable when FreeBSD supports thumb breakpoints.
|
|
// FreeBSD kernel as of 10.x, does not support thumb breakpoints
|
|
return 0;
|
|
}
|
|
}
|
|
LLVM_FALLTHROUGH;
|
|
default:
|
|
return Platform::GetSoftwareBreakpointTrapOpcode(target, bp_site);
|
|
}
|
|
}
|
|
|
|
|
|
void
|
|
PlatformFreeBSD::CalculateTrapHandlerSymbolNames ()
|
|
{
|
|
m_trap_handlers.push_back (ConstString ("_sigtramp"));
|
|
}
|
|
|
|
Error
|
|
PlatformFreeBSD::LaunchProcess (ProcessLaunchInfo &launch_info)
|
|
{
|
|
Error error;
|
|
if (IsHost())
|
|
{
|
|
error = Platform::LaunchProcess (launch_info);
|
|
}
|
|
else
|
|
{
|
|
if (m_remote_platform_sp)
|
|
error = m_remote_platform_sp->LaunchProcess (launch_info);
|
|
else
|
|
error.SetErrorString ("the platform is not currently connected");
|
|
}
|
|
return error;
|
|
}
|
|
|
|
lldb::ProcessSP
|
|
PlatformFreeBSD::Attach(ProcessAttachInfo &attach_info,
|
|
Debugger &debugger,
|
|
Target *target,
|
|
Error &error)
|
|
{
|
|
lldb::ProcessSP process_sp;
|
|
if (IsHost())
|
|
{
|
|
if (target == NULL)
|
|
{
|
|
TargetSP new_target_sp;
|
|
ArchSpec emptyArchSpec;
|
|
|
|
error = debugger.GetTargetList().CreateTarget (debugger,
|
|
NULL,
|
|
emptyArchSpec,
|
|
false,
|
|
m_remote_platform_sp,
|
|
new_target_sp);
|
|
target = new_target_sp.get();
|
|
}
|
|
else
|
|
error.Clear();
|
|
|
|
if (target && error.Success())
|
|
{
|
|
debugger.GetTargetList().SetSelectedTarget(target);
|
|
// The freebsd always currently uses the GDB remote debugger plug-in
|
|
// so even when debugging locally we are debugging remotely!
|
|
// Just like the darwin plugin.
|
|
process_sp = target->CreateProcess (attach_info.GetListenerForProcess(debugger), "gdb-remote", NULL);
|
|
|
|
if (process_sp)
|
|
error = process_sp->Attach (attach_info);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (m_remote_platform_sp)
|
|
process_sp = m_remote_platform_sp->Attach (attach_info, debugger, target, error);
|
|
else
|
|
error.SetErrorString ("the platform is not currently connected");
|
|
}
|
|
return process_sp;
|
|
}
|