llvm-project/lldb/source/Plugins/Platform/MacOSX/PlatformDarwinKernel.h

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//===-- PlatformDarwinKernel.h ----------------------------------*- 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
//
//===----------------------------------------------------------------------===//
#ifndef LLDB_SOURCE_PLUGINS_PLATFORM_MACOSX_PLATFORMDARWINKERNEL_H
#define LLDB_SOURCE_PLUGINS_PLATFORM_MACOSX_PLATFORMDARWINKERNEL_H
#include "PlatformDarwin.h"
#include "lldb/Host/FileSystem.h"
#include "lldb/Utility/ConstString.h"
#include "lldb/Utility/FileSpec.h"
#include "lldb/Utility/Status.h"
#include "lldb/Utility/UUID.h"
#include "lldb/lldb-forward.h"
#include "lldb/lldb-private-enumerations.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/Support/FileSystem.h"
#include <vector>
namespace lldb_private {
class ArchSpec;
class Debugger;
class FileSpecList;
class ModuleSpec;
class Process;
class Stream;
#if defined(__APPLE__) // This Plugin uses the Mac-specific
// source/Host/macosx/cfcpp utilities
class PlatformDarwinKernel : public PlatformDarwin {
public:
static lldb::PlatformSP CreateInstance(bool force, const ArchSpec *arch);
static void DebuggerInitialize(Debugger &debugger);
static void Initialize();
static void Terminate();
static llvm::StringRef GetPluginNameStatic() { return "darwin-kernel"; }
static llvm::StringRef GetDescriptionStatic();
PlatformDarwinKernel(LazyBool is_ios_debug_session);
~PlatformDarwinKernel() override;
llvm::StringRef GetPluginName() override { return GetPluginNameStatic(); }
llvm::StringRef GetDescription() override { return GetDescriptionStatic(); }
void GetStatus(Stream &strm) override;
Status GetSharedModule(const ModuleSpec &module_spec, Process *process,
lldb::ModuleSP &module_sp,
const FileSpecList *module_search_paths_ptr,
llvm::SmallVectorImpl<lldb::ModuleSP> *old_modules,
bool *did_create_ptr) override;
std::vector<ArchSpec>
GetSupportedArchitectures(const ArchSpec &process_host_arch) override;
bool SupportsModules() override { return false; }
void CalculateTrapHandlerSymbolNames() override;
protected:
// Map from kext bundle ID ("com.apple.filesystems.exfat") to FileSpec for
// the kext bundle on the host
// ("/System/Library/Extensions/exfat.kext/Contents/Info.plist").
typedef std::multimap<ConstString, FileSpec> BundleIDToKextMap;
typedef BundleIDToKextMap::iterator BundleIDToKextIterator;
typedef std::vector<FileSpec> KernelBinaryCollection;
// Array of directories that were searched for kext bundles (used only for
// reporting to user).
typedef std::vector<FileSpec> DirectoriesSearchedCollection;
typedef DirectoriesSearchedCollection::iterator DirectoriesSearchedIterator;
// Populate m_search_directories and m_search_directories_no_recursing
// vectors of directories.
void CollectKextAndKernelDirectories();
void GetUserSpecifiedDirectoriesToSearch();
static void AddRootSubdirsToSearchPaths(PlatformDarwinKernel *thisp,
const std::string &dir);
void AddSDKSubdirsToSearchPaths(const std::string &dir);
static FileSystem::EnumerateDirectoryResult
FindKDKandSDKDirectoriesInDirectory(void *baton, llvm::sys::fs::file_type ft,
llvm::StringRef path);
void SearchForKextsAndKernelsRecursively();
static FileSystem::EnumerateDirectoryResult
GetKernelsAndKextsInDirectoryWithRecursion(void *baton,
llvm::sys::fs::file_type ft,
llvm::StringRef path);
static FileSystem::EnumerateDirectoryResult
GetKernelsAndKextsInDirectoryNoRecursion(void *baton,
llvm::sys::fs::file_type ft,
llvm::StringRef path);
static FileSystem::EnumerateDirectoryResult
GetKernelsAndKextsInDirectoryHelper(void *baton, llvm::sys::fs::file_type ft,
llvm::StringRef path, bool recurse);
static std::vector<FileSpec>
SearchForExecutablesRecursively(const std::string &dir);
static void AddKextToMap(PlatformDarwinKernel *thisp,
const FileSpec &file_spec);
// Returns true if there is a .dSYM bundle next to the kext, or next to the
// binary inside the kext.
static bool KextHasdSYMSibling(const FileSpec &kext_bundle_filepath);
// Returns true if there is a .dSYM bundle next to the kernel
static bool KernelHasdSYMSibling(const FileSpec &kernel_filepath);
// Returns true if there is a .dSYM bundle with NO kernel binary next to it
static bool
KerneldSYMHasNoSiblingBinary(const FileSpec &kernel_dsym_filepath);
// Given a dsym_bundle argument ('.../foo.dSYM'), return a FileSpec
// with the binary inside it ('.../foo.dSYM/Contents/Resources/DWARF/foo').
// A dSYM bundle may have multiple DWARF binaries in them, so a vector
// of matches is returned.
static std::vector<FileSpec> GetDWARFBinaryInDSYMBundle(FileSpec dsym_bundle);
Status GetSharedModuleKext(const ModuleSpec &module_spec, Process *process,
lldb::ModuleSP &module_sp,
const FileSpecList *module_search_paths_ptr,
llvm::SmallVectorImpl<lldb::ModuleSP> *old_modules,
bool *did_create_ptr);
Status GetSharedModuleKernel(
const ModuleSpec &module_spec, Process *process,
lldb::ModuleSP &module_sp, const FileSpecList *module_search_paths_ptr,
llvm::SmallVectorImpl<lldb::ModuleSP> *old_modules, bool *did_create_ptr);
Status ExamineKextForMatchingUUID(const FileSpec &kext_bundle_path,
const UUID &uuid, const ArchSpec &arch,
lldb::ModuleSP &exe_module_sp);
bool LoadPlatformBinaryAndSetup(Process *process, lldb::addr_t addr,
bool notify) override;
// Most of the ivars are assembled under FileSystem::EnumerateDirectory calls
// where the function being called for each file/directory must be static.
// We'll pass a this pointer as a baton and access the ivars directly.
// Toss-up whether this should just be a struct at this point.
public:
/// Multimap of CFBundleID to FileSpec on local filesystem, kexts with dSYMs
/// next to them.
BundleIDToKextMap m_name_to_kext_path_map_with_dsyms;
/// Multimap of CFBundleID to FileSpec on local filesystem, kexts without
/// dSYMs next to them.
BundleIDToKextMap m_name_to_kext_path_map_without_dsyms;
/// List of directories we search for kexts/kernels.
DirectoriesSearchedCollection m_search_directories;
/// List of directories we search for kexts/kernels, no recursion.
DirectoriesSearchedCollection m_search_directories_no_recursing;
/// List of kernel binaries we found on local filesystem, without dSYMs next
/// to them.
KernelBinaryCollection m_kernel_binaries_with_dsyms;
/// List of kernel binaries we found on local filesystem, with dSYMs next to
/// them.
KernelBinaryCollection m_kernel_binaries_without_dsyms;
/// List of kernel dsyms with no binaries next to them.
KernelBinaryCollection m_kernel_dsyms_no_binaries;
/// List of kernel .dSYM.yaa files.
KernelBinaryCollection m_kernel_dsyms_yaas;
LazyBool m_ios_debug_session;
PlatformDarwinKernel(const PlatformDarwinKernel &) = delete;
const PlatformDarwinKernel &operator=(const PlatformDarwinKernel &) = delete;
};
#else // __APPLE__
// Since DynamicLoaderDarwinKernel is compiled in for all systems, and relies
// on PlatformDarwinKernel for the plug-in name, we compile just the plug-in
// name in here to avoid issues. We are tracking an internal bug to resolve
// this issue by either not compiling in DynamicLoaderDarwinKernel for
// non-apple builds, or to make PlatformDarwinKernel build on all systems.
//
// PlatformDarwinKernel is currently not compiled on other platforms due to the
// use of the Mac-specific source/Host/macosx/cfcpp utilities.
class PlatformDarwinKernel {
public:
static llvm::StringRef GetPluginNameStatic() { return "darwin-kernel"; }
};
#endif // __APPLE__
} // namespace lldb_private
#endif // LLDB_SOURCE_PLUGINS_PLATFORM_MACOSX_PLATFORMDARWINKERNEL_H