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bb279dc0 ZW |
1 | /* Demangler for GNU C++ - main program |
2 | Copyright 1989, 1991, 1994, 1995, 1996, 1997, 1998, 1999, | |
2da42df6 | 3 | 2000, 2001, 2002, 2003 Free Software Foundation, Inc. |
bb279dc0 ZW |
4 | Written by James Clark (jjc@jclark.uucp) |
5 | Rewritten by Fred Fish (fnf@cygnus.com) for ARM and Lucid demangling | |
6 | Modified by Satish Pai (pai@apollo.hp.com) for HP demangling | |
7 | ||
8 | This file is part of GCC. | |
9 | ||
10 | GCC is free software; you can redistribute it and/or modify it under | |
11 | the terms of the GNU General Public License as published by the Free | |
12 | Software Foundation; either version 2, or (at your option) any later | |
13 | version. | |
14 | ||
15 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
16 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
17 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
18 | for more details. | |
19 | ||
20 | You should have received a copy of the GNU General Public License | |
21 | along with GCC; see the file COPYING. If not, write to the Free | |
b43b5d5f NC |
22 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
23 | 02110-1301, USA. */ | |
bb279dc0 ZW |
24 | |
25 | #include "config.h" | |
26 | #include "bfd.h" | |
27 | #include "bucomm.h" | |
28 | #include "libiberty.h" | |
29 | #include "demangle.h" | |
30 | #include "getopt.h" | |
31 | #include "safe-ctype.h" | |
32 | ||
33 | static int flags = DMGL_PARAMS | DMGL_ANSI | DMGL_VERBOSE; | |
34 | ||
2da42df6 AJ |
35 | static void demangle_it (char *); |
36 | static void usage (FILE *, int) ATTRIBUTE_NORETURN; | |
37 | static void print_demangler_list (FILE *); | |
bb279dc0 ZW |
38 | |
39 | static void | |
2da42df6 | 40 | demangle_it (char *mangled_name) |
bb279dc0 ZW |
41 | { |
42 | char *result; | |
43 | ||
44 | /* For command line args, also try to demangle type encodings. */ | |
45 | result = cplus_demangle (mangled_name, flags | DMGL_TYPES); | |
46 | if (result == NULL) | |
47 | { | |
48 | printf ("%s\n", mangled_name); | |
49 | } | |
50 | else | |
51 | { | |
52 | printf ("%s\n", result); | |
53 | free (result); | |
54 | } | |
55 | } | |
56 | ||
2da42df6 AJ |
57 | static void |
58 | print_demangler_list (FILE *stream) | |
bb279dc0 | 59 | { |
2da42df6 | 60 | const struct demangler_engine *demangler; |
bb279dc0 ZW |
61 | |
62 | fprintf (stream, "{%s", libiberty_demanglers->demangling_style_name); | |
2da42df6 | 63 | |
bb279dc0 ZW |
64 | for (demangler = libiberty_demanglers + 1; |
65 | demangler->demangling_style != unknown_demangling; | |
66 | ++demangler) | |
67 | fprintf (stream, ",%s", demangler->demangling_style_name); | |
68 | ||
69 | fprintf (stream, "}"); | |
70 | } | |
71 | ||
72 | static void | |
2da42df6 | 73 | usage (FILE *stream, int status) |
bb279dc0 ZW |
74 | { |
75 | fprintf (stream, "\ | |
9663f234 ILT |
76 | Usage: %s [-_] [-n] [--strip-underscores] [--no-strip-underscores]\n\ |
77 | [-p] [--no-params]\n", | |
bb279dc0 ZW |
78 | program_name); |
79 | ||
80 | fprintf (stream, "\ | |
81 | [-s "); | |
82 | print_demangler_list (stream); | |
83 | fprintf (stream, "]\n"); | |
84 | ||
85 | fprintf (stream, "\ | |
86 | [--format "); | |
87 | print_demangler_list (stream); | |
88 | fprintf (stream, "]\n"); | |
89 | ||
90 | fprintf (stream, "\ | |
91 | [--help] [--version] [arg...]\n"); | |
92 | exit (status); | |
93 | } | |
94 | ||
85b1c36d | 95 | static char mbuffer[32767]; |
bb279dc0 ZW |
96 | |
97 | int strip_underscore = 0; | |
98 | ||
99 | static const struct option long_options[] = { | |
100 | {"strip-underscores", no_argument, 0, '_'}, | |
101 | {"format", required_argument, 0, 's'}, | |
102 | {"help", no_argument, 0, 'h'}, | |
4e48c9dd | 103 | {"no-params", no_argument, 0, 'p'}, |
bb279dc0 ZW |
104 | {"no-strip-underscores", no_argument, 0, 'n'}, |
105 | {"version", no_argument, 0, 'v'}, | |
106 | {0, no_argument, 0, 0} | |
107 | }; | |
108 | ||
2da42df6 | 109 | static const char *standard_symbol_characters (void); |
bb279dc0 | 110 | |
2da42df6 | 111 | static const char *hp_symbol_characters (void); |
bb279dc0 | 112 | |
2da42df6 | 113 | /* Return the string of non-alnum characters that may occur |
bb279dc0 ZW |
114 | as a valid symbol component, in the standard assembler symbol |
115 | syntax. */ | |
116 | ||
117 | static const char * | |
2da42df6 | 118 | standard_symbol_characters (void) |
bb279dc0 ZW |
119 | { |
120 | return "_$."; | |
121 | } | |
122 | ||
123 | ||
124 | /* Return the string of non-alnum characters that may occur | |
125 | as a valid symbol name component in an HP object file. | |
126 | ||
127 | Note that, since HP's compiler generates object code straight from | |
128 | C++ source, without going through an assembler, its mangled | |
129 | identifiers can use all sorts of characters that no assembler would | |
130 | tolerate, so the alphabet this function creates is a little odd. | |
131 | Here are some sample mangled identifiers offered by HP: | |
132 | ||
133 | typeid*__XT24AddressIndExpClassMember_ | |
134 | [Vftptr]key:__dt__32OrdinaryCompareIndExpClassMemberFv | |
135 | __ct__Q2_9Elf64_Dyn18{unnamed.union.#1}Fv | |
136 | ||
137 | This still seems really weird to me, since nowhere else in this | |
138 | file is there anything to recognize curly brackets, parens, etc. | |
139 | I've talked with Srikanth <srikanth@cup.hp.com>, and he assures me | |
140 | this is right, but I still strongly suspect that there's a | |
141 | misunderstanding here. | |
142 | ||
143 | If we decide it's better for c++filt to use HP's assembler syntax | |
144 | to scrape identifiers out of its input, here's the definition of | |
145 | the symbol name syntax from the HP assembler manual: | |
146 | ||
147 | Symbols are composed of uppercase and lowercase letters, decimal | |
148 | digits, dollar symbol, period (.), ampersand (&), pound sign(#) and | |
149 | underscore (_). A symbol can begin with a letter, digit underscore or | |
150 | dollar sign. If a symbol begins with a digit, it must contain a | |
151 | non-digit character. | |
152 | ||
153 | So have fun. */ | |
154 | static const char * | |
2da42df6 | 155 | hp_symbol_characters (void) |
bb279dc0 ZW |
156 | { |
157 | return "_$.<>#,*&[]:(){}"; | |
158 | } | |
159 | ||
2da42df6 | 160 | extern int main (int, char **); |
bb279dc0 ZW |
161 | |
162 | int | |
2da42df6 | 163 | main (int argc, char **argv) |
bb279dc0 ZW |
164 | { |
165 | char *result; | |
166 | int c; | |
167 | const char *valid_symbols; | |
168 | enum demangling_styles style = auto_demangling; | |
169 | ||
170 | program_name = argv[0]; | |
171 | xmalloc_set_program_name (program_name); | |
172 | ||
173 | strip_underscore = TARGET_PREPENDS_UNDERSCORE; | |
174 | ||
4e48c9dd | 175 | while ((c = getopt_long (argc, argv, "_nps:", long_options, (int *) 0)) != EOF) |
bb279dc0 ZW |
176 | { |
177 | switch (c) | |
178 | { | |
179 | case '?': | |
180 | usage (stderr, 1); | |
181 | break; | |
182 | case 'h': | |
183 | usage (stdout, 0); | |
184 | case 'n': | |
185 | strip_underscore = 0; | |
186 | break; | |
4e48c9dd ILT |
187 | case 'p': |
188 | flags &= ~ DMGL_PARAMS; | |
189 | break; | |
bb279dc0 ZW |
190 | case 'v': |
191 | print_version ("c++filt"); | |
192 | return (0); | |
193 | case '_': | |
194 | strip_underscore = 1; | |
195 | break; | |
196 | case 's': | |
197 | { | |
198 | style = cplus_demangle_name_to_style (optarg); | |
199 | if (style == unknown_demangling) | |
200 | { | |
201 | fprintf (stderr, "%s: unknown demangling style `%s'\n", | |
202 | program_name, optarg); | |
203 | return (1); | |
204 | } | |
205 | else | |
206 | cplus_demangle_set_style (style); | |
207 | } | |
208 | break; | |
209 | } | |
210 | } | |
211 | ||
212 | if (optind < argc) | |
213 | { | |
214 | for ( ; optind < argc; optind++) | |
215 | { | |
216 | demangle_it (argv[optind]); | |
217 | } | |
218 | } | |
219 | else | |
220 | { | |
221 | switch (current_demangling_style) | |
222 | { | |
223 | case gnu_demangling: | |
224 | case lucid_demangling: | |
225 | case arm_demangling: | |
226 | case java_demangling: | |
227 | case edg_demangling: | |
228 | case gnat_demangling: | |
229 | case gnu_v3_demangling: | |
230 | case auto_demangling: | |
231 | valid_symbols = standard_symbol_characters (); | |
232 | break; | |
233 | case hp_demangling: | |
234 | valid_symbols = hp_symbol_characters (); | |
235 | break; | |
236 | default: | |
237 | /* Folks should explicitly indicate the appropriate alphabet for | |
238 | each demangling. Providing a default would allow the | |
239 | question to go unconsidered. */ | |
240 | fatal ("Internal error: no symbol alphabet for current style"); | |
241 | } | |
242 | ||
243 | for (;;) | |
244 | { | |
85b1c36d | 245 | unsigned i = 0; |
bb279dc0 ZW |
246 | c = getchar (); |
247 | /* Try to read a label. */ | |
248 | while (c != EOF && (ISALNUM (c) || strchr (valid_symbols, c))) | |
249 | { | |
85b1c36d | 250 | if (i >= sizeof (mbuffer) - 1) |
bb279dc0 ZW |
251 | break; |
252 | mbuffer[i++] = c; | |
253 | c = getchar (); | |
254 | } | |
255 | if (i > 0) | |
256 | { | |
85b1c36d | 257 | unsigned skip_first = 0; |
bb279dc0 ZW |
258 | |
259 | mbuffer[i] = 0; | |
260 | if (mbuffer[0] == '.' || mbuffer[0] == '$') | |
261 | ++skip_first; | |
262 | if (strip_underscore && mbuffer[skip_first] == '_') | |
263 | ++skip_first; | |
264 | ||
265 | if (skip_first > i) | |
266 | skip_first = i; | |
267 | ||
268 | flags |= (int) style; | |
269 | result = cplus_demangle (mbuffer + skip_first, flags); | |
270 | if (result) | |
271 | { | |
272 | if (mbuffer[0] == '.') | |
273 | putc ('.', stdout); | |
274 | fputs (result, stdout); | |
275 | free (result); | |
276 | } | |
277 | else | |
278 | fputs (mbuffer, stdout); | |
279 | ||
280 | fflush (stdout); | |
281 | } | |
282 | if (c == EOF) | |
283 | break; | |
284 | putchar (c); | |
285 | fflush (stdout); | |
286 | } | |
287 | } | |
288 | ||
289 | return (0); | |
290 | } |