f9e915ae10
Summary: Fixes http://reviews.llvm.org/D8511 The original method of using dladdr() could return the incorrect relative path if not dynamically linked against liblldb and the working directory has changed. This is not a problem when built with python, since ScriptInterpreterPython::InitializePrivate calls HostInfo::GetLLDBPath(ePathTypeLLDBShlibDir, ...) and caches the correct path before any changes to the working directory. The /proc/self/exe approach fails if run using Python, but works for all other cases (including for android, which doesn't have dladdr()). So if we combine the two, we should reasonably cover all corner cases. Reviewers: vharron, ovyalov, clayborg Reviewed By: ovyalov, clayborg Subscribers: lldb-commits Differential Revision: http://reviews.llvm.org/D8570 llvm-svn: 233129
90 lines
2.5 KiB
C++
90 lines
2.5 KiB
C++
//===-- HostInfoAndroid.cpp -------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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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/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
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HostInfoAndroid::ComputeHostArchitectureSupport(ArchSpec &arch_32, ArchSpec &arch_64)
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{
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HostInfoLinux::ComputeHostArchitectureSupport(arch_32, arch_64);
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if (arch_32.IsValid())
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{
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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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{
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arch_64.GetTriple().setEnvironment(llvm::Triple::Android);
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}
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}
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FileSpec
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HostInfoAndroid::GetDefaultShell()
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{
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return FileSpec("/system/bin/sh", false);
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}
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FileSpec
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HostInfoAndroid::ResolveLibraryPath(const std::string& module_path, const ArchSpec& arch)
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{
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static const char* const ld_library_path_separator = ":";
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static const char* const default_lib32_path[] = {
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"/vendor/lib",
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"/system/lib",
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nullptr
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};
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static const char* const default_lib64_path[] = {
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"/vendor/lib64",
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"/system/lib64",
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nullptr
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};
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if (module_path.empty() || module_path[0] == '/')
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return FileSpec(module_path.c_str(), true);
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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).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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{
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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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{
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FileSpec file_candidate(path.str().c_str(), true);
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file_candidate.AppendPathComponent(module_path.c_str());
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if (file_candidate.Exists())
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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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