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-// Copyright (c) 2006, Google Inc.
-// All rights reserved.
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-// * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-// * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-// * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-//
-// Author: Satoru Takabayashi
-//
-// This library provides Symbolize() function that symbolizes program
-// counters to their corresponding symbol names on linux platforms.
-// This library has a minimal implementation of an ELF symbol table
-// reader (i.e. it doesn't depend on libelf, etc.).
-//
-// The algorithm used in Symbolize() is as follows.
-//
-// 1. Go through a list of maps in /proc/self/maps and find the map
-// containing the program counter.
-//
-// 2. Open the mapped file and find a regular symbol table inside.
-// Iterate over symbols in the symbol table and look for the symbol
-// containing the program counter. If such a symbol is found,
-// obtain the symbol name, and demangle the symbol if possible.
-// If the symbol isn't found in the regular symbol table (binary is
-// stripped), try the same thing with a dynamic symbol table.
-//
-// Note that Symbolize() is originally implemented to be used in
-// FailureSignalHandler() in base/google.cc. Hence it doesn't use
-// malloc() and other unsafe operations. It should be both
-// thread-safe and async-signal-safe.
-
-#ifndef BASE_SYMBOLIZE_H_
-#define BASE_SYMBOLIZE_H_
-
-#include "utilities.h"
-#include "config.h"
-#include "glog/logging.h"
-
-#ifdef HAVE_SYMBOLIZE
-
-#if defined(__ELF__) // defined by gcc
-#if defined(__OpenBSD__)
-#include <sys/exec_elf.h>
-#else
-#include <elf.h>
-#endif
-#include <link.h> // For ElfW() macro.
-
-// For systems where SIZEOF_VOID_P is not defined, determine it
-// based on __LP64__ (defined by gcc on 64-bit systems)
-#if !defined(SIZEOF_VOID_P)
-# if defined(__LP64__)
-# define SIZEOF_VOID_P 8
-# else
-# define SIZEOF_VOID_P 4
-# endif
-#endif
-
-// If there is no ElfW macro, let's define it by ourself.
-#ifndef ElfW
-# if SIZEOF_VOID_P == 4
-# define ElfW(type) Elf32_##type
-# elif SIZEOF_VOID_P == 8
-# define ElfW(type) Elf64_##type
-# else
-# error "Unknown sizeof(void *)"
-# endif
-#endif
-
-_START_GOOGLE_NAMESPACE_
-
-// Gets the section header for the given name, if it exists. Returns true on
-// success. Otherwise, returns false.
-bool GetSectionHeaderByName(int fd, const char *name, size_t name_len,
- ElfW(Shdr) *out);
-
-_END_GOOGLE_NAMESPACE_
-
-#endif /* __ELF__ */
-
-_START_GOOGLE_NAMESPACE_
-
-// Installs a callback function, which will be called right before a symbol name
-// is printed. The callback is intended to be used for showing a file name and a
-// line number preceding a symbol name.
-// "fd" is a file descriptor of the object file containing the program
-// counter "pc". The callback function should write output to "out"
-// and return the size of the output written. On error, the callback
-// function should return -1.
-typedef int (*SymbolizeCallback)(int fd, void *pc, char *out, size_t out_size,
- uint64 relocation);
-void InstallSymbolizeCallback(SymbolizeCallback callback);
-
-_END_GOOGLE_NAMESPACE_
-
-#endif
-
-_START_GOOGLE_NAMESPACE_
-
-// Symbolizes a program counter. On success, returns true and write the
-// symbol name to "out". The symbol name is demangled if possible
-// (supports symbols generated by GCC 3.x or newer). Otherwise,
-// returns false.
-bool Symbolize(void *pc, char *out, int out_size);
-
-_END_GOOGLE_NAMESPACE_
-
-#endif // BASE_SYMBOLIZE_H_