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//===-- HostInfoAndroid.cpp -------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "lldb/Host/android/HostInfoAndroid.h"
#include "lldb/Host/linux/HostInfoLinux.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringRef.h"
using namespace lldb_private;
using namespace llvm;
void
HostInfoAndroid::ComputeHostArchitectureSupport(ArchSpec &arch_32, ArchSpec &arch_64)
{
HostInfoLinux::ComputeHostArchitectureSupport(arch_32, arch_64);
if (arch_32.IsValid())
{
arch_32.GetTriple().setEnvironment(llvm::Triple::Android);
}
if (arch_64.IsValid())
{
arch_64.GetTriple().setEnvironment(llvm::Triple::Android);
}
}
FileSpec
HostInfoAndroid::GetDefaultShell()
{
return FileSpec("/system/bin/sh", false);
}
FileSpec
HostInfoAndroid::ResolveLibraryPath(const std::string& module_path, const ArchSpec& arch)
{
static const char* const ld_library_path_separator = ":";
static const char* const default_lib32_path[] = {
"/vendor/lib",
"/system/lib",
nullptr
};
static const char* const default_lib64_path[] = {
"/vendor/lib64",
"/system/lib64",
nullptr
};
if (module_path.empty() || module_path[0] == '/')
return FileSpec(module_path.c_str(), true);
SmallVector<StringRef, 4> ld_paths;
if (const char* ld_library_path = ::getenv("LD_LIBRARY_PATH"))
StringRef(ld_library_path).split(ld_paths, StringRef(ld_library_path_separator), -1, false);
const char* const* default_lib_path = nullptr;
switch (arch.GetAddressByteSize())
{
case 4:
default_lib_path = default_lib32_path;
break;
case 8:
default_lib_path = default_lib64_path;
break;
default:
assert(false && "Unknown address byte size");
return FileSpec();
}
for(const char* const* it = default_lib_path; *it; ++it)
ld_paths.push_back(StringRef(*it));
for (const StringRef& path : ld_paths)
{
FileSpec file_candidate(path.str().c_str(), true);
file_candidate.AppendPathComponent(module_path.c_str());
if (file_candidate.Exists())
return file_candidate;
}
return FileSpec();
}
bool
HostInfoAndroid::ComputeTempFileBaseDirectory(FileSpec &file_spec)
{
bool success = HostInfoLinux::ComputeTempFileBaseDirectory(file_spec);
// On Android, there is no path which is guaranteed to be writable. If the user has not
// provided a path via an environment variable, the generic algorithm will deduce /tmp, which
// is plain wrong. In that case we have an invalid directory, we substitute the path with
// /data/local/tmp, which is correct at least in some cases (i.e., when running as shell user).
if (!success || !file_spec.Exists())
file_spec = FileSpec("/data/local/tmp", false);
return file_spec.Exists();
}
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