xref: /external/google-breakpad/src/common/linux/elfutils-inl.h

// Copyright (c) 2012, Google Inc.
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//
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// modification, are permitted provided that the following conditions are
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//
//     * Redistributions of source code must retain the above copyright
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#ifndef COMMON_LINUX_ELFUTILS_INL_H__
#define COMMON_LINUX_ELFUTILS_INL_H__

#include "common/linux/linux_libc_support.h"
#include "elfutils.h"

namespace google_breakpad {

template<typename ElfClass, typename T>
const T* GetOffset(const typename ElfClass::Ehdr* elf_header,
                   typename ElfClass::Off offset) {
  return reinterpret_cast<const T*>(reinterpret_cast<uintptr_t>(elf_header) +
                                    offset);
}

template<typename ElfClass>
const typename ElfClass::Shdr* FindElfSectionByName(
    const char* name,
    typename ElfClass::Word section_type,
    const typename ElfClass::Shdr* sections,
    const char* section_names,
    const char* names_end,
    int nsection) {
  assert(name != NULL);
  assert(sections != NULL);
  assert(nsection > 0);

  int name_len = my_strlen(name);
  if (name_len == 0)
    return NULL;

  for (int i = 0; i < nsection; ++i) {
    const char* section_name = section_names + sections[i].sh_name;
    if (sections[i].sh_type == section_type &&
        names_end - section_name >= name_len + 1 &&
        my_strcmp(name, section_name) == 0) {
      return sections + i;
    }
  }
  return NULL;
}

}  // namespace google_breakpad

#endif  // COMMON_LINUX_ELFUTILS_INL_H__