Added more platform support. There are now some new commands:

platform status -- gets status information for the selected platform
platform create <platform-name> -- creates a new instance of a remote platform
platform list -- list all available platforms
platform select -- select a platform instance as the current platform (not working yet)

When using "platform create" it will create a remote platform and make it the
selected platform. For instances for iPhone OS debugging on Mac OS X one can 
do:

(lldb) platform create remote-ios --sdk-version=4.0
Remote platform: iOS platform
SDK version: 4.0
SDK path: "/Developer/Platforms/iPhoneOS.platform/DeviceSupport/4.0"
Not connected to a remote device.
(lldb) file ~/Documents/a.out
Current executable set to '~/Documents/a.out' (armv6).
(lldb) image list
[  0] /Volumes/work/gclayton/Documents/devb/attach/a.out
[  1] /Developer/Platforms/iPhoneOS.platform/DeviceSupport/4.0/Symbols/usr/lib/dyld
[  2] /Developer/Platforms/iPhoneOS.platform/DeviceSupport/4.0/Symbols/usr/lib/libSystem.B.dylib


Note that this is all happening prior to running _or_ connecting to a remote
platform. Once connected to a remote platform the OS version might change which
means we will need to update our dependecies. Also once we run, we will need
to match up the actualy binaries with the actualy UUID's to files in the
SDK, or download and cache them locally.

This is just the start of the remote platforms, but this modification is the
first iteration in getting the platforms really doing something.

llvm-svn: 127934

1 files changed, 613 insertions, 0 deletions

diff --git a/lldb/source/Plugins/Platform/MacOSX/PlatformRemoteiOS.cpp b/lldb/source/Plugins/Platform/MacOSX/PlatformRemoteiOS.cpp
new file mode 100644
index 00000000000..03af1ddfb1f
--- /dev/null
+++ b/lldb/source/Plugins/Platform/MacOSX/PlatformRemoteiOS.cpp
@@ -0,0 +1,613 @@
+//===-- Platform.cpp --------------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "PlatformRemoteiOS.h"
+
+// C Includes
+// C++ Includes
+// Other libraries and framework includes
+// Project includes
+#include "lldb/Breakpoint/BreakpointLocation.h"
+#include "lldb/Core/ArchSpec.h"
+#include "lldb/Core/Error.h"
+#include "lldb/Core/Module.h"
+#include "lldb/Core/ModuleList.h"
+#include "lldb/Core/PluginManager.h"
+#include "lldb/Core/StreamString.h"
+#include "lldb/Host/FileSpec.h"
+#include "lldb/Host/Host.h"
+#include "lldb/Target/Process.h"
+#include "lldb/Target/Target.h"
+
+using namespace lldb;
+using namespace lldb_private;
+    
+void
+PlatformRemoteiOS::Initialize ()
+{
+    static bool g_initialized = false;
+
+    if (g_initialized == false)
+    {
+        g_initialized = true;
+        PluginManager::RegisterPlugin (GetShortPluginNameStatic(),
+                                       GetDescriptionStatic(),
+                                       CreateInstance);
+    }
+}
+
+Platform* 
+PlatformRemoteiOS::CreateInstance ()
+{
+    return new PlatformRemoteiOS ();
+}
+
+void
+PlatformRemoteiOS::Terminate ()
+{
+}
+
+const char *
+PlatformRemoteiOS::GetPluginNameStatic ()
+{
+    return "PlatformRemoteiOS";
+}
+
+const char *
+PlatformRemoteiOS::GetShortPluginNameStatic()
+{
+    return "remote-ios";
+}
+
+const char *
+PlatformRemoteiOS::GetDescriptionStatic()
+{
+    return "Remote iOS platform plug-in.";
+}
+
+
+void
+PlatformRemoteiOS::GetStatus (Stream &strm)
+{
+    uint32_t major = UINT32_MAX;
+    uint32_t minor = UINT32_MAX;
+    uint32_t update = UINT32_MAX;
+    const char *sdk_directory = GetDeviceSupportDirectoryForOSVersion();
+    strm.PutCString ("Remote platform: iOS platform\n");
+    if (GetOSVersion(major, minor, update))
+    {
+        strm.Printf("SDK version: %u", major);
+        if (minor != UINT32_MAX)
+            strm.Printf(".%u", minor);
+        if (update != UINT32_MAX)
+            strm.Printf(".%u", update);
+        strm.EOL();
+    }
+
+    if (!m_build_update.empty())
+        strm.Printf("SDK update: %s\n", m_build_update.c_str());
+
+    if (sdk_directory)
+        strm.Printf ("SDK path: \"%s\"\n", sdk_directory);
+    else
+        strm.PutCString ("SDK path: error: unable to locate SDK\n");
+
+    if (IsConnected())
+        strm.Printf("Connected to: %s\n", m_remote_url.c_str());
+    else
+        strm.PutCString("Not connected to a remote device.\n");
+}
+
+
+Error
+PlatformRemoteiOS::ResolveExecutable (const FileSpec &exe_file,
+                                      const ArchSpec &exe_arch,
+                                      lldb::ModuleSP &exe_module_sp)
+{
+    Error error;
+    // Nothing special to do here, just use the actual file and architecture
+
+    FileSpec resolved_exe_file (exe_file);
+    
+    // If we have "ls" as the exe_file, resolve the executable loation based on
+    // the current path variables
+    // TODO: resolve bare executables in the Platform SDK
+//    if (!resolved_exe_file.Exists())
+//        resolved_exe_file.ResolveExecutableLocation ();
+
+    // Resolve any executable within a bundle on MacOSX
+    // TODO: verify that this handles shallow bundles, if not then implement one ourselves
+    Host::ResolveExecutableInBundle (resolved_exe_file);
+
+    if (resolved_exe_file.Exists())
+    {
+        if (exe_arch.IsValid())
+        {
+            error = ModuleList::GetSharedModule (resolved_exe_file, 
+                                                 exe_arch, 
+                                                 NULL,
+                                                 NULL, 
+                                                 0, 
+                                                 exe_module_sp, 
+                                                 NULL, 
+                                                 NULL);
+        
+            if (exe_module_sp->GetObjectFile() == NULL)
+            {
+                exe_module_sp.reset();
+                error.SetErrorStringWithFormat ("'%s%s%s' doesn't contain the architecture %s",
+                                                exe_file.GetDirectory().AsCString(""),
+                                                exe_file.GetDirectory() ? "/" : "",
+                                                exe_file.GetFilename().AsCString(""),
+                                                exe_arch.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;
+            ArchSpec platform_arch;
+            for (uint32_t idx = 0; GetSupportedArchitectureAtIndex (idx, platform_arch); ++idx)
+            {
+                error = ModuleList::GetSharedModule (resolved_exe_file, 
+                                                     platform_arch, 
+                                                     NULL,
+                                                     NULL, 
+                                                     0, 
+                                                     exe_module_sp, 
+                                                     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 (platform_arch.GetArchitectureName());
+            }
+            
+            if (error.Fail() || !exe_module_sp)
+            {
+                error.SetErrorStringWithFormat ("'%s%s%s' doesn't contain any '%s' platform architectures: %s",
+                                                exe_file.GetDirectory().AsCString(""),
+                                                exe_file.GetDirectory() ? "/" : "",
+                                                exe_file.GetFilename().AsCString(""),
+                                                GetShortPluginName(),
+                                                arch_names.GetString().c_str());
+            }
+        }
+    }
+    else
+    {
+        error.SetErrorStringWithFormat ("'%s%s%s' does not exist",
+                                        exe_file.GetDirectory().AsCString(""),
+                                        exe_file.GetDirectory() ? "/" : "",
+                                        exe_file.GetFilename().AsCString(""));
+    }
+
+    return error;
+}
+
+const char *
+PlatformRemoteiOS::GetDeviceSupportDirectory()
+{
+    if (m_device_support_directory.empty())
+    {
+        bool developer_dir_path_valid = false;
+        char developer_dir_path[PATH_MAX];
+        FileSpec temp_file_spec;
+        if (Host::GetLLDBPath (ePathTypeLLDBShlibDir, temp_file_spec))
+        {
+            if (temp_file_spec.GetPath (developer_dir_path, sizeof(developer_dir_path)))
+            {
+                char *lib_priv_frameworks = strstr (developer_dir_path, "/Library/PrivateFrameworks/LLDB.framework");
+                if (lib_priv_frameworks)
+                {
+                    *lib_priv_frameworks = '\0';
+                    developer_dir_path_valid = true;
+                }
+            }
+        }
+        
+        if (!developer_dir_path_valid)
+        {
+            std::string xcode_dir_path;
+            const char *xcode_select_prefix_dir = getenv ("XCODE_SELECT_PREFIX_DIR");
+            if (xcode_select_prefix_dir)
+                xcode_dir_path.append (xcode_select_prefix_dir);
+            xcode_dir_path.append ("/usr/share/xcode-select/xcode_dir_path");
+            temp_file_spec.SetFile(xcode_dir_path.c_str(), false);
+            size_t bytes_read = temp_file_spec.ReadFileContents(0, developer_dir_path, sizeof(developer_dir_path));
+            if (bytes_read > 0)
+            {
+                developer_dir_path[bytes_read] = '\0';
+                while (developer_dir_path[bytes_read-1] == '\r' ||
+                       developer_dir_path[bytes_read-1] == '\n')
+                    developer_dir_path[--bytes_read] = '\0';
+                developer_dir_path_valid = true;
+            }
+        }
+        
+        if (developer_dir_path_valid)
+        {
+            temp_file_spec.SetFile (developer_dir_path, false);
+            if (temp_file_spec.Exists())
+            {
+                m_device_support_directory.assign (developer_dir_path);
+                return m_device_support_directory.c_str();
+            }
+        }
+        // Assign a single NULL character so we know we tried to find the device
+        // support directory and we don't keep trying to find it over and over.
+        m_device_support_directory.assign (1, '\0');
+    }
+
+    // We should have put a single NULL character into m_device_support_directory
+    // or it should have a valid path if the code gets here
+    assert (m_device_support_directory.empty() == false);
+    if (m_device_support_directory[0])
+        return m_device_support_directory.c_str();
+    return NULL;
+}
+
+const char *
+PlatformRemoteiOS::GetDeviceSupportDirectoryForOSVersion()
+{
+    if (m_device_support_directory_for_os_version.empty())
+    {
+        const char *device_support_dir = GetDeviceSupportDirectory();
+        const bool resolve_path = true;
+        if (device_support_dir)
+        {
+            m_device_support_directory_for_os_version.assign (device_support_dir);
+            m_device_support_directory_for_os_version.append ("/Platforms/iPhoneOS.platform/DeviceSupport");
+
+            uint32_t major = 0;
+            uint32_t minor = 0;
+            uint32_t update = 0;
+            FileSpec file_spec;
+            char resolved_path[PATH_MAX];
+            if (GetOSVersion(major, minor, update))
+            {
+                if (major != UINT32_MAX && minor != UINT32_MAX && update != UINT32_MAX)
+                {
+                    ::snprintf (resolved_path, 
+                                sizeof(resolved_path), 
+                                "%s/%i.%i.%i", 
+                                m_device_support_directory_for_os_version.c_str(), 
+                                major, 
+                                minor, 
+                                update);
+                    
+                    file_spec.SetFile(resolved_path, resolve_path);
+                    if (file_spec.Exists() && file_spec.GetPath(resolved_path, sizeof(resolved_path)))
+                    {
+                        m_device_support_directory_for_os_version.assign (resolved_path);
+                        return m_device_support_directory_for_os_version.c_str();
+                    }
+                }
+
+                if (major != UINT32_MAX && minor != UINT32_MAX)
+                {
+                    ::snprintf (resolved_path, 
+                                sizeof(resolved_path), 
+                                "%s/%i.%i", 
+                                m_device_support_directory_for_os_version.c_str(), 
+                                major, 
+                                minor, 
+                                update);
+                    
+                    file_spec.SetFile(resolved_path, resolve_path);
+                    if (file_spec.Exists() && file_spec.GetPath(resolved_path, sizeof(resolved_path)))
+                    {
+                        m_device_support_directory_for_os_version.assign (resolved_path);
+                        return m_device_support_directory_for_os_version.c_str();
+                    }
+                }
+            }
+            else
+            {
+                // Use the default as we have no OS version selected
+                m_device_support_directory_for_os_version.append ("/Latest");
+                file_spec.SetFile(m_device_support_directory_for_os_version.c_str(), resolve_path);
+                
+                if (file_spec.Exists() && file_spec.GetPath(resolved_path, sizeof(resolved_path)))
+                {
+                    if (m_major_os_version == UINT32_MAX)
+                    {
+                        const char *resolved_latest_dirname = file_spec.GetFilename().GetCString();
+                        const char *pos = Args::StringToVersion (resolved_latest_dirname, 
+                                                                 m_major_os_version,
+                                                                 m_minor_os_version,
+                                                                 m_update_os_version);
+
+                        if (m_build_update.empty() && pos[0] == ' ' && pos[1] == '(')
+                        {
+                            const char *end_paren = strchr (pos + 2, ')');
+                            m_build_update.assign (pos + 2, end_paren);
+                        }
+                    }
+                    m_device_support_directory_for_os_version.assign (resolved_path);
+                    return m_device_support_directory_for_os_version.c_str();
+                }
+            }
+        }
+        // Assign a single NULL character so we know we tried to find the device
+        // support directory and we don't keep trying to find it over and over.
+        m_device_support_directory_for_os_version.assign (1, '\0');
+    }
+    // We should have put a single NULL character into m_device_support_directory_for_os_version
+    // or it should have a valid path if the code gets here
+    assert (m_device_support_directory_for_os_version.empty() == false);
+    if (m_device_support_directory_for_os_version[0])
+        return m_device_support_directory_for_os_version.c_str();
+    return NULL;
+}
+
+Error
+PlatformRemoteiOS::GetFile (const FileSpec &platform_file, 
+                            FileSpec &local_file)
+{
+    Error error;
+    char platform_file_path[PATH_MAX];
+    if (platform_file.GetPath(platform_file_path, sizeof(platform_file_path)))
+    {
+        char resolved_path[PATH_MAX];
+    
+        const char * os_version_dir = GetDeviceSupportDirectoryForOSVersion();
+        if (os_version_dir)
+        {
+            ::snprintf (resolved_path, 
+                        sizeof(resolved_path), 
+                        "%s/Symbols.Internal/%s", 
+                        os_version_dir, 
+                        platform_file_path);
+
+            local_file.SetFile(resolved_path, true);
+            if (local_file.Exists())
+                return error;
+            ::snprintf (resolved_path, 
+                        sizeof(resolved_path), 
+                        "%s/Symbols/%s", 
+                        os_version_dir, 
+                        platform_file_path);
+
+            local_file.SetFile(resolved_path, true);
+            if (local_file.Exists())
+                return error;
+
+        }
+        local_file = platform_file;
+        if (local_file.Exists())
+            return error;
+
+        error.SetErrorStringWithFormat ("unable to locate a platform file for '%s' in platform '%s'", 
+                                        platform_file_path,
+                                        GetPluginName());
+    }
+    else
+    {
+        error.SetErrorString ("invalid platform file argument");
+    }
+    return error;
+}
+
+//------------------------------------------------------------------
+/// Default Constructor
+//------------------------------------------------------------------
+PlatformRemoteiOS::PlatformRemoteiOS () :
+    Platform(false),    // This is a remote platform
+    m_device_support_directory (),
+    m_device_support_directory_for_os_version ()
+{
+}
+
+//------------------------------------------------------------------
+/// Destructor.
+///
+/// The destructor is virtual since this class is designed to be
+/// inherited from by the plug-in instance.
+//------------------------------------------------------------------
+PlatformRemoteiOS::~PlatformRemoteiOS()
+{
+}
+
+uint32_t
+PlatformRemoteiOS::FindProcessesByName (const char *name_match, 
+                                        lldb::NameMatchType name_match_type,
+                                        ProcessInfoList &process_infos)
+{
+    // TODO: if connected, send a packet to get the remote process infos by name
+    process_infos.Clear();
+    return 0;
+}
+
+bool
+PlatformRemoteiOS::GetProcessInfo (lldb::pid_t pid, ProcessInfo &process_info)
+{
+    // TODO: if connected, send a packet to get the remote process info
+    process_info.Clear();
+    return false;
+}
+
+bool
+PlatformRemoteiOS::GetSupportedArchitectureAtIndex (uint32_t idx, ArchSpec &arch)
+{
+    ArchSpec system_arch (GetSystemArchitecture());
+    const ArchSpec::Core system_core = system_arch.GetCore();
+    switch (system_core)
+    {
+    default:
+        switch (idx)
+        {
+        case 0: arch.SetTriple ("armv7-apple-darwin");  return true;
+        case 1: arch.SetTriple ("armv7f-apple-darwin"); return true;
+        case 2: arch.SetTriple ("armv7k-apple-darwin"); return true;
+        case 3: arch.SetTriple ("armv7s-apple-darwin"); return true;
+        case 4: arch.SetTriple ("armv6-apple-darwin");  return true;
+        case 5: arch.SetTriple ("armv5-apple-darwin");  return true;
+        case 6: arch.SetTriple ("armv4-apple-darwin");  return true;
+        case 7: arch.SetTriple ("arm-apple-darwin");    return true;
+        default: break;
+        }
+        break;
+
+    case ArchSpec::eCore_arm_armv7f:
+        switch (idx)
+        {
+        case 0: arch.SetTriple ("armv7f-apple-darwin"); return true;
+        case 1: arch.SetTriple ("armv7-apple-darwin");  return true;
+        case 2: arch.SetTriple ("armv6-apple-darwin");  return true;
+        case 3: arch.SetTriple ("armv5-apple-darwin");  return true;
+        case 4: arch.SetTriple ("armv4-apple-darwin");  return true;
+        case 5: arch.SetTriple ("arm-apple-darwin");    return true;
+        default: break;
+        }
+        break;
+
+    case ArchSpec::eCore_arm_armv7k:
+        switch (idx)
+        {
+        case 0: arch.SetTriple ("armv7k-apple-darwin"); return true;
+        case 1: arch.SetTriple ("armv7-apple-darwin");  return true;
+        case 2: arch.SetTriple ("armv6-apple-darwin");  return true;
+        case 3: arch.SetTriple ("armv5-apple-darwin");  return true;
+        case 4: arch.SetTriple ("armv4-apple-darwin");  return true;
+        case 5: arch.SetTriple ("arm-apple-darwin");    return true;
+        default: break;
+        }
+        break;
+
+    case ArchSpec::eCore_arm_armv7s:
+        switch (idx)
+        {
+        case 0: arch.SetTriple ("armv7s-apple-darwin"); return true;
+        case 1: arch.SetTriple ("armv7-apple-darwin");  return true;
+        case 2: arch.SetTriple ("armv6-apple-darwin");  return true;
+        case 3: arch.SetTriple ("armv5-apple-darwin");  return true;
+        case 4: arch.SetTriple ("armv4-apple-darwin");  return true;
+        case 5: arch.SetTriple ("arm-apple-darwin");    return true;
+        default: break;
+        }
+        break;
+
+    case ArchSpec::eCore_arm_armv7:
+        switch (idx)
+        {
+        case 0: arch.SetTriple ("armv7-apple-darwin");  return true;
+        case 1: arch.SetTriple ("armv6-apple-darwin");  return true;
+        case 2: arch.SetTriple ("armv5-apple-darwin");  return true;
+        case 3: arch.SetTriple ("armv4-apple-darwin");  return true;
+        case 4: arch.SetTriple ("arm-apple-darwin");    return true;
+        default: break;
+        }
+        break;
+
+    case ArchSpec::eCore_arm_armv6:
+        switch (idx)
+        {
+        case 0: arch.SetTriple ("armv6-apple-darwin");  return true;
+        case 1: arch.SetTriple ("armv5-apple-darwin");  return true;
+        case 2: arch.SetTriple ("armv4-apple-darwin");  return true;
+        case 3: arch.SetTriple ("arm-apple-darwin");    return true;
+        default: break;
+        }
+        break;
+
+    case ArchSpec::eCore_arm_armv5:
+        switch (idx)
+        {
+        case 0: arch.SetTriple ("armv5-apple-darwin");  return true;
+        case 1: arch.SetTriple ("armv4-apple-darwin");  return true;
+        case 2: arch.SetTriple ("arm-apple-darwin");    return true;
+        default: break;
+        }
+        break;
+
+    case ArchSpec::eCore_arm_armv4:
+        switch (idx)
+        {
+        case 0: arch.SetTriple ("armv4-apple-darwin");  return true;
+        case 1: arch.SetTriple ("arm-apple-darwin");    return true;
+        default: break;
+        }
+        break;
+    }
+    arch.Clear();
+    return false;
+}
+
+size_t
+PlatformRemoteiOS::GetSoftwareBreakpointTrapOpcode (Target &target, BreakpointSite *bp_site)
+{
+    const uint8_t *trap_opcode = NULL;
+    uint32_t trap_opcode_size = 0;
+        
+    llvm::Triple::ArchType machine = target.GetArchitecture().GetMachine();
+    switch (machine)
+    {
+    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::arm:
+        {
+            static const uint8_t g_arm_breakpoint_opcode[] = { 0xFE, 0xDE, 0xFF, 0xE7 };
+            static const uint8_t g_thumb_breakpooint_opcode[] = { 0xFE, 0xDE };
+
+            lldb::BreakpointLocationSP bp_loc_sp (bp_site->GetOwnerAtIndex (0));
+            if (bp_loc_sp)
+            {
+                const AddressClass addr_class = bp_loc_sp->GetAddress().GetAddressClass ();
+                if (addr_class == eAddressClassCodeAlternateISA)
+                {
+                    trap_opcode = g_thumb_breakpooint_opcode;
+                    trap_opcode_size = sizeof(g_thumb_breakpooint_opcode);
+                    break;
+                }
+            }
+            trap_opcode = g_arm_breakpoint_opcode;
+            trap_opcode_size = sizeof(g_arm_breakpoint_opcode);
+        }
+        break;
+        
+    case llvm::Triple::ppc:
+    case llvm::Triple::ppc64:
+        {
+            static const uint8_t g_ppc_breakpoint_opcode[] = { 0x7F, 0xC0, 0x00, 0x08 };
+            trap_opcode = g_ppc_breakpoint_opcode;
+            trap_opcode_size = sizeof(g_ppc_breakpoint_opcode);
+        }
+        break;
+        
+    default:
+        assert(!"Unhandled architecture in ProcessMacOSX::GetSoftwareBreakpointTrapOpcode()");
+        break;
+    }
+    
+    if (trap_opcode && trap_opcode_size)
+    {
+        if (bp_site->SetTrapOpcode(trap_opcode, trap_opcode_size))
+            return trap_opcode_size;
+    }
+    return 0;
+
+}