1 //===- Demangle.cpp -------------------------------------------------------===// 2 // 3 // The MCLinker Project 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 #include <mcld/Config/Config.h> 10 #include <mcld/Support/CXADemangle.tcc> 11 #include <mcld/Support/Demangle.h> 12 13 #ifdef HAVE_CXXABI_H 14 #include <cxxabi.h> 15 #endif 16 17 namespace mcld { 18 19 std::string demangleName(const std::string& pName) { 20 #ifdef HAVE_CXXABI_H 21 // Spoil names of symbols with C linkage, so use an heuristic approach to 22 // check if the name should be demangled. 23 if (pName.substr(0, 2) != "_Z") 24 return pName; 25 // __cxa_demangle needs manually handle the memory release, so we wrap 26 // it into this helper function. 27 size_t output_leng; 28 int status; 29 char* buffer = abi::__cxa_demangle(pName.c_str(), /*buffer=*/0, 30 &output_leng, &status); 31 if (status != 0) { // Failed 32 return pName; 33 } 34 std::string result(buffer); 35 free(buffer); 36 37 return result; 38 #else 39 return pName; 40 #endif 41 } 42 43 bool isCtorOrDtor(const char* pName, size_t pLength) 44 { 45 arena<bs> a; 46 Db db(a); 47 db.cv = 0; 48 db.ref = 0; 49 db.encoding_depth = 0; 50 db.parsed_ctor_dtor_cv = false; 51 db.tag_templates = true; 52 db.template_param.emplace_back(a); 53 db.fix_forward_references = false; 54 db.try_to_parse_template_args = true; 55 int internal_status = success; 56 demangle(pName, pName + pLength, db, internal_status); 57 if (internal_status == success && 58 db.fix_forward_references && 59 !db.template_param.empty() && 60 !db.template_param.front().empty()) { 61 db.fix_forward_references = false; 62 db.tag_templates = false; 63 db.names.clear(); 64 db.subs.clear(); 65 demangle(pName, pName + pLength, db, internal_status); 66 if (db.fix_forward_references) 67 internal_status = invalid_mangled_name; 68 } 69 70 if (internal_status != success) { 71 db.parsed_ctor_dtor_cv = false; 72 } 73 return db.parsed_ctor_dtor_cv; 74 } 75 76 } // namespace mcld 77
