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llvm-project/lldb/source/Plugins/Platform/MacOSX/PlatformMacOSX.cpp

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//===-- 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
nullptr, // 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;
}
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