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95 lines
3.3 KiB
95 lines
3.3 KiB
4 months ago
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//===-- HostInfoAndroid.cpp -----------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "lldb/Host/android/HostInfoAndroid.h"
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#include "lldb/Host/FileSystem.h"
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#include "lldb/Host/linux/HostInfoLinux.h"
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/ADT/StringRef.h"
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using namespace lldb_private;
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using namespace llvm;
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void HostInfoAndroid::ComputeHostArchitectureSupport(ArchSpec &arch_32,
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ArchSpec &arch_64) {
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HostInfoLinux::ComputeHostArchitectureSupport(arch_32, arch_64);
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if (arch_32.IsValid()) {
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arch_32.GetTriple().setEnvironment(llvm::Triple::Android);
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}
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if (arch_64.IsValid()) {
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arch_64.GetTriple().setEnvironment(llvm::Triple::Android);
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}
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}
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FileSpec HostInfoAndroid::GetDefaultShell() {
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return FileSpec("/system/bin/sh");
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}
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FileSpec HostInfoAndroid::ResolveLibraryPath(const std::string &module_path,
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const ArchSpec &arch) {
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static const char *const ld_library_path_separator = ":";
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static const char *const default_lib32_path[] = {"/vendor/lib", "/system/lib",
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nullptr};
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static const char *const default_lib64_path[] = {"/vendor/lib64",
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"/system/lib64", nullptr};
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if (module_path.empty() || module_path[0] == '/') {
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FileSpec file_spec(module_path.c_str());
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FileSystem::Instance().Resolve(file_spec);
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return file_spec;
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}
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SmallVector<StringRef, 4> ld_paths;
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if (const char *ld_library_path = ::getenv("LD_LIBRARY_PATH"))
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StringRef(ld_library_path)
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.split(ld_paths, StringRef(ld_library_path_separator), -1, false);
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const char *const *default_lib_path = nullptr;
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switch (arch.GetAddressByteSize()) {
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case 4:
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default_lib_path = default_lib32_path;
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break;
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case 8:
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default_lib_path = default_lib64_path;
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break;
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default:
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assert(false && "Unknown address byte size");
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return FileSpec();
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}
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for (const char *const *it = default_lib_path; *it; ++it)
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ld_paths.push_back(StringRef(*it));
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for (const StringRef &path : ld_paths) {
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FileSpec file_candidate(path.str().c_str());
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FileSystem::Instance().Resolve(file_candidate);
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file_candidate.AppendPathComponent(module_path.c_str());
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if (FileSystem::Instance().Exists(file_candidate))
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return file_candidate;
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}
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return FileSpec();
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}
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bool HostInfoAndroid::ComputeTempFileBaseDirectory(FileSpec &file_spec) {
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bool success = HostInfoLinux::ComputeTempFileBaseDirectory(file_spec);
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// On Android, there is no path which is guaranteed to be writable. If the
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// user has not provided a path via an environment variable, the generic
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// algorithm will deduce /tmp, which is plain wrong. In that case we have an
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// invalid directory, we substitute the path with /data/local/tmp, which is
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// correct at least in some cases (i.e., when running as shell user).
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if (!success || !FileSystem::Instance().Exists(file_spec))
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file_spec = FileSpec("/data/local/tmp");
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return FileSystem::Instance().Exists(file_spec);
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}
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