ImageInspectionELF.cpp

//===--- ImageInspectionELF.cpp - ELF image inspection --------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
///
/// \file
///
/// This file includes routines that interact with ld*.so on ELF-based platforms
/// to extract runtime metadata embedded in dynamically linked ELF images
/// generated by the Swift compiler.
///
//===----------------------------------------------------------------------===//

#if defined(__ELF__)

#include "../SwiftShims/MetadataSections.h"
#include "ImageInspection.h"
#include <dlfcn.h>

using namespace swift;

int swift::lookupSymbol(const void *address, SymbolInfo *info) {
  Dl_info dlinfo;
  if (dladdr(address, &dlinfo) == 0) {
    return 0;
  }

  info->fileName = dlinfo.dli_fname;
  info->baseAddress = dlinfo.dli_fbase;
  info->symbolName.reset(dlinfo.dli_sname);
  info->symbolAddress = dlinfo.dli_saddr;
  return 1;
}

#endif // defined(__ELF__)