Import LLVM 10.0.0 release including clang, lld and lldb.

ok hackroom
tested by plenty

1 files changed, 336 insertions, 0 deletions

diff --git a/gnu/llvm/lldb/source/Plugins/Platform/MacOSX/PlatformMacOSX.cpp b/gnu/llvm/lldb/source/Plugins/Platform/MacOSX/PlatformMacOSX.cpp
new file mode 100644
index 00000000000..134a4c7c807
--- /dev/null
+++ b/gnu/llvm/lldb/source/Plugins/Platform/MacOSX/PlatformMacOSX.cpp
@@ -0,0 +1,336 @@
+//===-- PlatformMacOSX.cpp --------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "PlatformMacOSX.h"
+#include "lldb/Host/Config.h"
+
+
+#include <sstream>
+
+#include "lldb/Breakpoint/BreakpointLocation.h"
+#include "lldb/Core/Module.h"
+#include "lldb/Core/ModuleList.h"
+#include "lldb/Core/ModuleSpec.h"
+#include "lldb/Core/PluginManager.h"
+#include "lldb/Host/Host.h"
+#include "lldb/Host/HostInfo.h"
+#include "lldb/Symbol/ObjectFile.h"
+#include "lldb/Target/Process.h"
+#include "lldb/Target/Target.h"
+#include "lldb/Utility/DataBufferHeap.h"
+#include "lldb/Utility/FileSpec.h"
+#include "lldb/Utility/Log.h"
+#include "lldb/Utility/Status.h"
+#include "lldb/Utility/StreamString.h"
+
+using namespace lldb;
+using namespace lldb_private;
+
+static uint32_t g_initialize_count = 0;
+
+void PlatformMacOSX::Initialize() {
+  PlatformDarwin::Initialize();
+
+  if (g_initialize_count++ == 0) {
+#if defined(__APPLE__)
+    PlatformSP default_platform_sp(new PlatformMacOSX(true));
+    default_platform_sp->SetSystemArchitecture(HostInfo::GetArchitecture());
+    Platform::SetHostPlatform(default_platform_sp);
+#endif
+    PluginManager::RegisterPlugin(PlatformMacOSX::GetPluginNameStatic(false),
+                                  PlatformMacOSX::GetDescriptionStatic(false),
+                                  PlatformMacOSX::CreateInstance);
+  }
+}
+
+void PlatformMacOSX::Terminate() {
+  if (g_initialize_count > 0) {
+    if (--g_initialize_count == 0) {
+      PluginManager::UnregisterPlugin(PlatformMacOSX::CreateInstance);
+    }
+  }
+
+  PlatformDarwin::Terminate();
+}
+
+PlatformSP PlatformMacOSX::CreateInstance(bool force, const ArchSpec *arch) {
+  Log *log(GetLogIfAllCategoriesSet(LIBLLDB_LOG_PLATFORM));
+  if (log) {
+    const char *arch_name;
+    if (arch && arch->GetArchitectureName())
+      arch_name = arch->GetArchitectureName();
+    else
+      arch_name = "<null>";
+
+    const char *triple_cstr =
+        arch ? arch->GetTriple().getTriple().c_str() : "<null>";
+
+    LLDB_LOGF(log, "PlatformMacOSX::%s(force=%s, arch={%s,%s})", __FUNCTION__,
+              force ? "true" : "false", arch_name, triple_cstr);
+  }
+
+  // The only time we create an instance is when we are creating a remote
+  // macosx platform
+  const bool is_host = false;
+
+  bool create = force;
+  if (!create && arch && arch->IsValid()) {
+    const llvm::Triple &triple = arch->GetTriple();
+    switch (triple.getVendor()) {
+    case llvm::Triple::Apple:
+      create = true;
+      break;
+
+#if defined(__APPLE__)
+    // Only accept "unknown" for vendor if the host is Apple and it "unknown"
+    // wasn't specified (it was just returned because it was NOT specified)
+    case llvm::Triple::UnknownVendor:
+      create = !arch->TripleVendorWasSpecified();
+      break;
+#endif
+    default:
+      break;
+    }
+
+    if (create) {
+      switch (triple.getOS()) {
+      case llvm::Triple::Darwin: // Deprecated, but still support Darwin for
+                                 // historical reasons
+      case llvm::Triple::MacOSX:
+        break;
+#if defined(__APPLE__)
+      // Only accept "vendor" for vendor if the host is Apple and it "unknown"
+      // wasn't specified (it was just returned because it was NOT specified)
+      case llvm::Triple::UnknownOS:
+        create = !arch->TripleOSWasSpecified();
+        break;
+#endif
+      default:
+        create = false;
+        break;
+      }
+    }
+  }
+  if (create) {
+    LLDB_LOGF(log, "PlatformMacOSX::%s() creating platform", __FUNCTION__);
+    return PlatformSP(new PlatformMacOSX(is_host));
+  }
+
+  LLDB_LOGF(log, "PlatformMacOSX::%s() aborting creation of platform",
+            __FUNCTION__);
+
+  return PlatformSP();
+}
+
+lldb_private::ConstString PlatformMacOSX::GetPluginNameStatic(bool is_host) {
+  if (is_host) {
+    static ConstString g_host_name(Platform::GetHostPlatformName());
+    return g_host_name;
+  } else {
+    static ConstString g_remote_name("remote-macosx");
+    return g_remote_name;
+  }
+}
+
+const char *PlatformMacOSX::GetDescriptionStatic(bool is_host) {
+  if (is_host)
+    return "Local Mac OS X user platform plug-in.";
+  else
+    return "Remote Mac OS X user platform plug-in.";
+}
+
+/// Default Constructor
+PlatformMacOSX::PlatformMacOSX(bool is_host) : PlatformDarwin(is_host) {}
+
+/// Destructor.
+///
+/// The destructor is virtual since this class is designed to be
+/// inherited from by the plug-in instance.
+PlatformMacOSX::~PlatformMacOSX() {}
+
+ConstString PlatformMacOSX::GetSDKDirectory(lldb_private::Target &target) {
+  ModuleSP exe_module_sp(target.GetExecutableModule());
+  if (exe_module_sp) {
+    ObjectFile *objfile = exe_module_sp->GetObjectFile();
+    if (objfile) {
+      std::string xcode_contents_path;
+      std::string default_xcode_sdk;
+      FileSpec fspec;
+      llvm::VersionTuple version = objfile->GetSDKVersion();
+      if (!version.empty()) {
+        fspec = HostInfo::GetShlibDir();
+        if (fspec) {
+          std::string path;
+          xcode_contents_path = fspec.GetPath();
+          size_t pos = xcode_contents_path.find("/Xcode.app/Contents/");
+          if (pos != std::string::npos) {
+            // LLDB.framework is inside an Xcode app bundle, we can locate the
+            // SDK from here
+            xcode_contents_path.erase(pos + strlen("/Xcode.app/Contents/"));
+          } else {
+            xcode_contents_path.clear();
+            // Use the selected Xcode
+            int status = 0;
+            int signo = 0;
+            std::string output;
+            const char *command = "xcrun -sdk macosx --show-sdk-path";
+            lldb_private::Status error = RunShellCommand(
+                command,    // shell command to run
+                FileSpec(), // current working directory
+                &status,    // Put the exit status of the process in here
+                &signo,     // Put the signal that caused the process to exit in
+                            // here
+                &output, // Get the output from the command and place it in this
+                         // string
+                std::chrono::seconds(3));
+            if (status == 0 && !output.empty()) {
+              size_t first_non_newline = output.find_last_not_of("\r\n");
+              if (first_non_newline != std::string::npos)
+                output.erase(first_non_newline + 1);
+              default_xcode_sdk = output;
+
+              pos = default_xcode_sdk.find("/Xcode.app/Contents/");
+              if (pos != std::string::npos)
+                xcode_contents_path = default_xcode_sdk.substr(
+                    0, pos + strlen("/Xcode.app/Contents/"));
+            }
+          }
+        }
+
+        if (!xcode_contents_path.empty()) {
+          StreamString sdk_path;
+          sdk_path.Printf("%sDeveloper/Platforms/MacOSX.platform/Developer/"
+                          "SDKs/MacOSX%u.%u.sdk",
+                          xcode_contents_path.c_str(), version.getMajor(),
+                          version.getMinor().getValue());
+          fspec.SetFile(sdk_path.GetString(), FileSpec::Style::native);
+          if (FileSystem::Instance().Exists(fspec))
+            return ConstString(sdk_path.GetString());
+        }
+
+        if (!default_xcode_sdk.empty()) {
+          fspec.SetFile(default_xcode_sdk, FileSpec::Style::native);
+          if (FileSystem::Instance().Exists(fspec))
+            return ConstString(default_xcode_sdk);
+        }
+      }
+    }
+  }
+  return ConstString();
+}
+
+Status PlatformMacOSX::GetSymbolFile(const FileSpec &platform_file,
+                                     const UUID *uuid_ptr,
+                                     FileSpec &local_file) {
+  if (IsRemote()) {
+    if (m_remote_platform_sp)
+      return m_remote_platform_sp->GetFileWithUUID(platform_file, uuid_ptr,
+                                                   local_file);
+  }
+
+  // Default to the local case
+  local_file = platform_file;
+  return Status();
+}
+
+lldb_private::Status
+PlatformMacOSX::GetFileWithUUID(const lldb_private::FileSpec &platform_file,
+                                const lldb_private::UUID *uuid_ptr,
+                                lldb_private::FileSpec &local_file) {
+  if (IsRemote() && m_remote_platform_sp) {
+    std::string local_os_build;
+#if !defined(__linux__)
+    HostInfo::GetOSBuildString(local_os_build);
+#endif
+    std::string remote_os_build;
+    m_remote_platform_sp->GetOSBuildString(remote_os_build);
+    if (local_os_build == remote_os_build) {
+      // same OS version: the local file is good enough
+      local_file = platform_file;
+      return Status();
+    } else {
+      // try to find the file in the cache
+      std::string cache_path(GetLocalCacheDirectory());
+      std::string module_path(platform_file.GetPath());
+      cache_path.append(module_path);
+      FileSpec module_cache_spec(cache_path);
+      if (FileSystem::Instance().Exists(module_cache_spec)) {
+        local_file = module_cache_spec;
+        return Status();
+      }
+      // bring in the remote module file
+      FileSpec module_cache_folder =
+          module_cache_spec.CopyByRemovingLastPathComponent();
+      // try to make the local directory first
+      Status err(
+          llvm::sys::fs::create_directory(module_cache_folder.GetPath()));
+      if (err.Fail())
+        return err;
+      err = GetFile(platform_file, module_cache_spec);
+      if (err.Fail())
+        return err;
+      if (FileSystem::Instance().Exists(module_cache_spec)) {
+        local_file = module_cache_spec;
+        return Status();
+      } else
+        return Status("unable to obtain valid module file");
+    }
+  }
+  local_file = platform_file;
+  return Status();
+}
+
+bool PlatformMacOSX::GetSupportedArchitectureAtIndex(uint32_t idx,
+                                                     ArchSpec &arch) {
+#if defined(__arm__) || defined(__arm64__) || defined(__aarch64__)
+  return ARMGetSupportedArchitectureAtIndex(idx, arch);
+#else
+  return x86GetSupportedArchitectureAtIndex(idx, arch);
+#endif
+}
+
+lldb_private::Status PlatformMacOSX::GetSharedModule(
+    const lldb_private::ModuleSpec &module_spec, Process *process,
+    lldb::ModuleSP &module_sp,
+    const lldb_private::FileSpecList *module_search_paths_ptr,
+    lldb::ModuleSP *old_module_sp_ptr, bool *did_create_ptr) {
+  Status error = GetSharedModuleWithLocalCache(
+      module_spec, module_sp, module_search_paths_ptr, old_module_sp_ptr,
+      did_create_ptr);
+
+  if (module_sp) {
+    if (module_spec.GetArchitecture().GetCore() ==
+        ArchSpec::eCore_x86_64_x86_64h) {
+      ObjectFile *objfile = module_sp->GetObjectFile();
+      if (objfile == nullptr) {
+        // We didn't find an x86_64h slice, fall back to a x86_64 slice
+        ModuleSpec module_spec_x86_64(module_spec);
+        module_spec_x86_64.GetArchitecture() = ArchSpec("x86_64-apple-macosx");
+        lldb::ModuleSP x86_64_module_sp;
+        lldb::ModuleSP old_x86_64_module_sp;
+        bool did_create = false;
+        Status x86_64_error = GetSharedModuleWithLocalCache(
+            module_spec_x86_64, x86_64_module_sp, module_search_paths_ptr,
+            &old_x86_64_module_sp, &did_create);
+        if (x86_64_module_sp && x86_64_module_sp->GetObjectFile()) {
+          module_sp = x86_64_module_sp;
+          if (old_module_sp_ptr)
+            *old_module_sp_ptr = old_x86_64_module_sp;
+          if (did_create_ptr)
+            *did_create_ptr = did_create;
+          return x86_64_error;
+        }
+      }
+    }
+  }
+
+  if (!module_sp) {
+      error = FindBundleBinaryInExecSearchPaths (module_spec, process, module_sp, module_search_paths_ptr, old_module_sp_ptr, did_create_ptr);
+  }
+  return error;
+}