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llvm-project/lldb/source/Plugins/Platform/MacOSX/PlatformMacOSX.cpp
Jonas Devlieghere 937348cd13 [FileSpec] Make style argument mandatory for SetFile. NFC 
SetFile has an optional style argument which defaulted to the native
style. This patch makes that argument mandatory so clients of the
FileSpec class are forced to think about the correct syntax.

At the same time this introduces a (protected) convenience method to
update the file from within the FileSpec class that keeps the current
style.

These two changes together prevent a potential pitfall where the style
might be forgotten, leading to the path being updated and the style
unintentionally being changed to the host style.

llvm-svn: 334663
2018-06-13 22:08:14 +00:00

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//===-- PlatformMacOSX.cpp --------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "PlatformMacOSX.h"
#include "lldb/Host/Config.h"
// C++ Includes
#include <sstream>
// Other libraries and framework includes
// Project includes
#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>";
log->Printf("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 == false && 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::UnknownArch:
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) {
if (log)
log->Printf("PlatformMacOSX::%s() creating platform", __FUNCTION__);
return PlatformSP(new PlatformMacOSX(is_host));
}
if (log)
log->Printf("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;
uint32_t versions[2];
if (objfile->GetSDKVersion(versions, sizeof(versions))) {
if (HostInfo::GetLLDBPath(ePathTypeLLDBShlibDir, 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
NULL, // 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(), versions[0],
versions[1]);
fspec.SetFile(sdk_path.GetString(), false, FileSpec::Style::native);
if (fspec.Exists())
return ConstString(sdk_path.GetString());
}
if (!default_xcode_sdk.empty()) {
fspec.SetFile(default_xcode_sdk, false, FileSpec::Style::native);
if (fspec.Exists())
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.compare(remote_os_build) == 0) {
// 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, false);
if (module_cache_spec.Exists()) {
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 (module_cache_spec.Exists()) {
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 == NULL) {
// 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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