// SPDX-License-Identifier: GPL-2.0#include "demangle-cxx.h"#include <stdlib.h>#include <string.h>#include <linux/compiler.h> #ifdef HAVE_LIBBFD_SUPPORT#define PACKAGE 'perf'#include <bfd.h>#endif #ifdef HAVE_CXA_DEMANGLE_SUPPORT#include <cxxabi.h>#endif #if defined(HAVE_LIBBFD_SUPPORT) || defined(HAVE_CPLUS_DEMANGLE_SUPPORT)#ifndef DMGL_PARAMS#define DMGL_PARAMS     (1 << 0)  /* Include function args */#define DMGL_ANSI       (1 << 1)  /* Include const, volatile, etc */#endif#endif /* * Demangle C++ function signature * * Note: caller is responsible for freeing demangled string */extern "C"char *cxx_demangle_sym(const char *str, bool params __maybe_unused,                       bool modifiers __maybe_unused){#ifdef HAVE_LIBBFD_SUPPORT        int flags = (params ? DMGL_PARAMS : 0) | (modifiers ? DMGL_ANSI : 0);         return bfd_demangle(NULL, str, flags);#elif defined(HAVE_CPLUS_DEMANGLE_SUPPORT)        int flags = (params ? DMGL_PARAMS : 0) | (modifiers ? DMGL_ANSI : 0);         return cplus_demangle(str, flags);#elif defined(HAVE_CXA_DEMANGLE_SUPPORT)        char *output;        int status;         output = abi::__cxa_demangle(str, /*output_buffer=*/NULL, /*length=*/NULL, &status);        return output;#else        return NULL;#endif}