chromium/third_party/abseil-cpp/absl/debugging/internal/elf_mem_image.h

/*
 * Copyright 2017 The Abseil Authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

// Allow dynamic symbol lookup for in-memory Elf images.

#ifndef ABSL_DEBUGGING_INTERNAL_ELF_MEM_IMAGE_H_
#define ABSL_DEBUGGING_INTERNAL_ELF_MEM_IMAGE_H_

// Including this will define the __GLIBC__ macro if glibc is being
// used.
#include <climits>
#include <cstdint>

#include "absl/base/config.h"

// Maybe one day we can rewrite this file not to require the elf
// symbol extensions in glibc, but for right now we need them.
#ifdef ABSL_HAVE_ELF_MEM_IMAGE
#error ABSL_HAVE_ELF_MEM_IMAGE cannot be directly set
#endif

#if defined(__ELF__) && !defined(__OpenBSD__) && !defined(__QNX__) && \
    !defined(__native_client__) && !defined(__asmjs__) &&             \
    !defined(__wasm__) && !defined(__HAIKU__) && !defined(__sun) &&   \
    !defined(__VXWORKS__) && !defined(__hexagon__)
#define ABSL_HAVE_ELF_MEM_IMAGE …
#endif

#ifdef ABSL_HAVE_ELF_MEM_IMAGE

#include <link.h>  // for ElfW

#if defined(__FreeBSD__) && !defined(ElfW)
#define ElfW …
#endif

namespace absl {
ABSL_NAMESPACE_BEGIN
namespace debugging_internal {

// An in-memory ELF image (may not exist on disk).
class ElfMemImage { … };

}  // namespace debugging_internal
ABSL_NAMESPACE_END
}  // namespace absl

#endif  // ABSL_HAVE_ELF_MEM_IMAGE

#endif  // ABSL_DEBUGGING_INTERNAL_ELF_MEM_IMAGE_H_