Mike Dodd | 8cfa702 | 2010-11-17 11:12:26 -0800 | [diff] [blame^] | 1 | /** |
| 2 | * @file demangle_symbol.cpp |
| 3 | * Demangle a C++ symbol |
| 4 | * |
| 5 | * @remark Copyright 2002 OProfile authors |
| 6 | * @remark Read the file COPYING |
| 7 | * |
| 8 | * @author John Levon |
| 9 | */ |
| 10 | |
| 11 | #include <cstdlib> |
| 12 | |
| 13 | #include "config.h" |
| 14 | |
| 15 | #include "demangle_symbol.h" |
| 16 | #include "demangle_java_symbol.h" |
| 17 | #include "op_regex.h" |
| 18 | |
| 19 | // from libiberty |
| 20 | /*@{\name demangle option parameter */ |
| 21 | #ifndef DMGL_PARAMS |
| 22 | # define DMGL_PARAMS (1 << 0) /**< Include function args */ |
| 23 | #endif |
| 24 | #ifndef DMGL_ANSI |
| 25 | # define DMGL_ANSI (1 << 1) /**< Include const, volatile, etc */ |
| 26 | #endif |
| 27 | /*@}*/ |
| 28 | extern "C" char * cplus_demangle(char const * mangled, int options); |
| 29 | |
| 30 | using namespace std; |
| 31 | |
| 32 | namespace options { |
| 33 | extern demangle_type demangle; |
| 34 | } |
| 35 | |
| 36 | string const demangle_symbol(string const & name) |
| 37 | { |
| 38 | if (options::demangle == dmt_none) |
| 39 | return name; |
| 40 | |
| 41 | // Do not try to strip leading underscore, as this leads to many |
| 42 | // C++ demangling failures. However we strip off a leading '.' |
| 43 | // as generated on PPC64 |
| 44 | string const & tmp = (name[0] == '.' ? name.substr(1) : name); |
| 45 | char * unmangled = cplus_demangle(tmp.c_str(), DMGL_PARAMS | DMGL_ANSI); |
| 46 | |
| 47 | if (!unmangled) { |
| 48 | string result = demangle_java_symbol(name); |
| 49 | if (!result.empty()) |
| 50 | return result; |
| 51 | return name; |
| 52 | } |
| 53 | |
| 54 | string result(unmangled); |
| 55 | free(unmangled); |
| 56 | |
| 57 | if (options::demangle == dmt_smart) { |
| 58 | static bool init = false; |
| 59 | static regular_expression_replace regex; |
| 60 | if (init == false) { |
| 61 | setup_regex(regex, OP_DATADIR "/stl.pat"); |
| 62 | init = true; |
| 63 | } |
| 64 | // we don't protect against exception here, pattern must be |
| 65 | // right and user can easily work-around by using -d |
| 66 | regex.execute(result); |
| 67 | } |
| 68 | |
| 69 | return result; |
| 70 | } |