forked from OSchip/llvm-project
617 lines
18 KiB
C++
617 lines
18 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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// C Includes
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#include <stdio.h>
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#include <sys/utsname.h>
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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/Core/Error.h"
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#include "lldb/Core/Debugger.h"
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#include "lldb/Core/PluginManager.h"
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#include "lldb/Host/Host.h"
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using namespace lldb;
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using namespace lldb_private;
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Platform *
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PlatformFreeBSD::CreateInstance ()
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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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return new PlatformFreeBSD (is_host);
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}
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const char *
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PlatformFreeBSD::GetPluginNameStatic()
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{
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return "PlatformFreeBSD";
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}
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const char *
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PlatformFreeBSD::GetShortPluginNameStatic (bool is_host)
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{
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if (is_host)
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return Platform::GetHostPlatformName ();
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else
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return "remote-freebsd";
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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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void
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PlatformFreeBSD::Initialize ()
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{
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static bool g_initialized = false;
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if (!g_initialized)
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{
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#if defined (__FreeBSD__)
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PlatformSP default_platform_sp (CreateInstance());
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//default_platform_sp->SetSystemArchitecture (Host::GetArchitecture());
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Platform::SetDefaultPlatform (default_platform_sp);
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#endif
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PluginManager::RegisterPlugin(PlatformFreeBSD::GetShortPluginNameStatic(false),
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PlatformFreeBSD::GetDescriptionStatic(false),
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PlatformFreeBSD::CreateInstance);
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g_initialized = true;
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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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PluginManager::UnregisterPlugin (PlatformFreeBSD::CreateInstance);
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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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{
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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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Error
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PlatformFreeBSD::ResolveExecutable (const FileSpec &exe_file,
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const ArchSpec &exe_arch,
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lldb::ModuleSP &exe_module_sp)
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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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FileSpec resolved_exe_file (exe_file);
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if (IsHost())
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{
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// If we have "ls" as the exe_file, resolve the executable loation based on
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// the current path variables
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if (!resolved_exe_file.Exists())
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{
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exe_file.GetPath(exe_path, sizeof(exe_path));
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resolved_exe_file.SetFile(exe_path, true);
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}
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if (!resolved_exe_file.Exists())
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resolved_exe_file.ResolveExecutableLocation ();
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// Resolve any executable within a bundle on MacOSX
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//Host::ResolveExecutableInBundle (resolved_exe_file);
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if (resolved_exe_file.Exists())
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error.Clear();
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else
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{
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exe_file.GetPath(exe_path, sizeof(exe_path));
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error.SetErrorStringWithFormat("unable to find executable for '%s'", exe_path);
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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 = m_remote_platform_sp->ResolveExecutable (exe_file,
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exe_arch,
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exe_module_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_exe_file);
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if (resolved_exe_file.Exists()) {
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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.");
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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 (exe_arch.IsValid())
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{
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error = ModuleList::GetSharedModule (resolved_exe_file,
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exe_arch,
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NULL,
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NULL,
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0,
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exe_module_sp,
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NULL,
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NULL);
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if (exe_module_sp->GetObjectFile() == NULL)
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{
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exe_module_sp.reset();
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error.SetErrorStringWithFormat ("'%s%s%s' doesn't contain the architecture %s",
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exe_file.GetDirectory().AsCString(""),
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exe_file.GetDirectory() ? "/" : "",
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exe_file.GetFilename().AsCString(""),
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exe_arch.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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ArchSpec platform_arch;
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for (uint32_t idx = 0; GetSupportedArchitectureAtIndex (idx, platform_arch); ++idx)
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{
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error = ModuleList::GetSharedModule (resolved_exe_file,
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platform_arch,
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NULL,
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NULL,
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0,
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exe_module_sp,
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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 (platform_arch.GetArchitectureName());
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}
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if (error.Fail() || !exe_module_sp)
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{
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error.SetErrorStringWithFormat ("'%s%s%s' doesn't contain any '%s' platform architectures: %s",
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exe_file.GetDirectory().AsCString(""),
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exe_file.GetDirectory() ? "/" : "",
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exe_file.GetFilename().AsCString(""),
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GetShortPluginName(),
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arch_names.GetString().c_str());
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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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error.SetErrorStringWithFormat ("'%s%s%s' does not exist",
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exe_file.GetDirectory().AsCString(""),
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exe_file.GetDirectory() ? "/" : "",
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exe_file.GetFilename().AsCString(""));
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}
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return error;
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}
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size_t
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PlatformFreeBSD::GetSoftwareBreakpointTrapOpcode (Target &target, BreakpointSite *bp_site)
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{
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ArchSpec arch = target.GetArchitecture();
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const uint8_t *trap_opcode = NULL;
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size_t trap_opcode_size = 0;
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switch (arch.GetCore())
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{
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default:
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assert(false && "Unhandled architecture in PlatformFreeBSD::GetSoftwareBreakpointTrapOpcode()");
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break;
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case ArchSpec::eCore_x86_32_i386:
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case ArchSpec::eCore_x86_64_x86_64:
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{
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static const uint8_t g_i386_opcode[] = { 0xCC };
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trap_opcode = g_i386_opcode;
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trap_opcode_size = sizeof(g_i386_opcode);
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}
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break;
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}
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if (bp_site->SetTrapOpcode(trap_opcode, trap_opcode_size))
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return trap_opcode_size;
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return 0;
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}
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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", GetShortPluginName());
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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 ("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", GetShortPluginName());
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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 sucess = false;
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if (IsHost())
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{
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sucess = Platform::GetProcessInfo (pid, process_info);
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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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sucess = m_remote_platform_sp->GetProcessInfo (pid, process_info);
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}
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return sucess;
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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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Error
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PlatformFreeBSD::LaunchProcess (ProcessLaunchInfo &launch_info)
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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 = Platform::LaunchProcess (launch_info);
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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->LaunchProcess (launch_info);
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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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lldb::ProcessSP
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PlatformFreeBSD::Attach(lldb::pid_t pid,
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Debugger &debugger,
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Target *target,
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Listener &listener,
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Error &error)
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{
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lldb::ProcessSP process_sp;
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if (IsHost())
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{
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if (target == NULL)
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{
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TargetSP new_target_sp;
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FileSpec emptyFileSpec;
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ArchSpec emptyArchSpec;
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error = debugger.GetTargetList().CreateTarget (debugger,
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emptyFileSpec,
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emptyArchSpec,
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false,
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new_target_sp);
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target = new_target_sp.get();
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}
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else
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error.Clear();
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if (target && error.Success())
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{
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debugger.GetTargetList().SetSelectedTarget(target);
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// The freebsd always currently uses the GDB remote debugger plug-in
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// so even when debugging locally we are debugging remotely!
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// Just like the darwin plugin.
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process_sp = target->CreateProcess (listener, "gdb-remote");
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if (process_sp)
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error = process_sp->Attach (pid);
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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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process_sp = m_remote_platform_sp->Attach (pid, debugger, target, listener, error);
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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 process_sp;
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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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// From PlatformMacOSX only
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Error
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PlatformFreeBSD::GetFile (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->GetFile (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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Error
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PlatformFreeBSD::GetSharedModule (const FileSpec &platform_file,
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const ArchSpec &arch,
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const UUID *uuid_ptr,
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const ConstString *object_name_ptr,
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off_t object_offset,
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ModuleSP &module_sp,
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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 (platform_file,
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arch,
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uuid_ptr,
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object_name_ptr,
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object_offset,
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module_sp,
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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 (platform_file,
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arch,
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uuid_ptr,
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object_name_ptr,
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object_offset,
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module_sp,
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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(platform_file);
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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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// From macosx;s plugin code. For FreeBSD we may want to support more archs.
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if (idx == 0)
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{
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arch = Host::GetArchitecture (Host::eSystemDefaultArchitecture);
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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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ArchSpec platform_arch (Host::GetArchitecture (Host::eSystemDefaultArchitecture));
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ArchSpec platform_arch64 (Host::GetArchitecture (Host::eSystemDefaultArchitecture64));
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if (platform_arch == platform_arch64)
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{
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|
// This freebsd platform supports both 32 and 64 bit. Since we already
|
|
// returned the 64 bit arch for idx == 0, return the 32 bit arch
|
|
// for idx == 1
|
|
arch = Host::GetArchitecture (Host::eSystemDefaultArchitecture32);
|
|
return arch.IsValid();
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void
|
|
PlatformFreeBSD::GetStatus (Stream &strm)
|
|
{
|
|
struct utsname un;
|
|
|
|
if (uname(&un)) {
|
|
strm << "FreeBSD";
|
|
return;
|
|
}
|
|
|
|
strm << "Host: " << un.sysname << ' ' << un.release << ' ' << un.version << '\n';
|
|
Platform::GetStatus(strm);
|
|
}
|