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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 | |
22 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
23 | 02111-1307, USA. */ | |
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, "\ | |
76 | Usage: %s [-_] [-n] [--strip-underscores] [--no-strip-underscores] \n", | |
77 | program_name); | |
78 | ||
79 | fprintf (stream, "\ | |
80 | [-s "); | |
81 | print_demangler_list (stream); | |
82 | fprintf (stream, "]\n"); | |
83 | ||
84 | fprintf (stream, "\ | |
85 | [--format "); | |
86 | print_demangler_list (stream); | |
87 | fprintf (stream, "]\n"); | |
88 | ||
89 | fprintf (stream, "\ | |
90 | [--help] [--version] [arg...]\n"); | |
91 | exit (status); | |
92 | } | |
93 | ||
94 | #define MBUF_SIZE 32767 | |
95 | char mbuffer[MBUF_SIZE]; | |
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'}, | |
103 | {"no-strip-underscores", no_argument, 0, 'n'}, | |
104 | {"version", no_argument, 0, 'v'}, | |
105 | {0, no_argument, 0, 0} | |
106 | }; | |
107 | ||
2da42df6 | 108 | static const char *standard_symbol_characters (void); |
bb279dc0 | 109 | |
2da42df6 | 110 | static const char *hp_symbol_characters (void); |
bb279dc0 | 111 | |
2da42df6 | 112 | /* Return the string of non-alnum characters that may occur |
bb279dc0 ZW |
113 | as a valid symbol component, in the standard assembler symbol |
114 | syntax. */ | |
115 | ||
116 | static const char * | |
2da42df6 | 117 | standard_symbol_characters (void) |
bb279dc0 ZW |
118 | { |
119 | return "_$."; | |
120 | } | |
121 | ||
122 | ||
123 | /* Return the string of non-alnum characters that may occur | |
124 | as a valid symbol name component in an HP object file. | |
125 | ||
126 | Note that, since HP's compiler generates object code straight from | |
127 | C++ source, without going through an assembler, its mangled | |
128 | identifiers can use all sorts of characters that no assembler would | |
129 | tolerate, so the alphabet this function creates is a little odd. | |
130 | Here are some sample mangled identifiers offered by HP: | |
131 | ||
132 | typeid*__XT24AddressIndExpClassMember_ | |
133 | [Vftptr]key:__dt__32OrdinaryCompareIndExpClassMemberFv | |
134 | __ct__Q2_9Elf64_Dyn18{unnamed.union.#1}Fv | |
135 | ||
136 | This still seems really weird to me, since nowhere else in this | |
137 | file is there anything to recognize curly brackets, parens, etc. | |
138 | I've talked with Srikanth <srikanth@cup.hp.com>, and he assures me | |
139 | this is right, but I still strongly suspect that there's a | |
140 | misunderstanding here. | |
141 | ||
142 | If we decide it's better for c++filt to use HP's assembler syntax | |
143 | to scrape identifiers out of its input, here's the definition of | |
144 | the symbol name syntax from the HP assembler manual: | |
145 | ||
146 | Symbols are composed of uppercase and lowercase letters, decimal | |
147 | digits, dollar symbol, period (.), ampersand (&), pound sign(#) and | |
148 | underscore (_). A symbol can begin with a letter, digit underscore or | |
149 | dollar sign. If a symbol begins with a digit, it must contain a | |
150 | non-digit character. | |
151 | ||
152 | So have fun. */ | |
153 | static const char * | |
2da42df6 | 154 | hp_symbol_characters (void) |
bb279dc0 ZW |
155 | { |
156 | return "_$.<>#,*&[]:(){}"; | |
157 | } | |
158 | ||
2da42df6 | 159 | extern int main (int, char **); |
bb279dc0 ZW |
160 | |
161 | int | |
2da42df6 | 162 | main (int argc, char **argv) |
bb279dc0 ZW |
163 | { |
164 | char *result; | |
165 | int c; | |
166 | const char *valid_symbols; | |
167 | enum demangling_styles style = auto_demangling; | |
168 | ||
169 | program_name = argv[0]; | |
170 | xmalloc_set_program_name (program_name); | |
171 | ||
172 | strip_underscore = TARGET_PREPENDS_UNDERSCORE; | |
173 | ||
174 | while ((c = getopt_long (argc, argv, "_ns:", long_options, (int *) 0)) != EOF) | |
175 | { | |
176 | switch (c) | |
177 | { | |
178 | case '?': | |
179 | usage (stderr, 1); | |
180 | break; | |
181 | case 'h': | |
182 | usage (stdout, 0); | |
183 | case 'n': | |
184 | strip_underscore = 0; | |
185 | break; | |
186 | case 'v': | |
187 | print_version ("c++filt"); | |
188 | return (0); | |
189 | case '_': | |
190 | strip_underscore = 1; | |
191 | break; | |
192 | case 's': | |
193 | { | |
194 | style = cplus_demangle_name_to_style (optarg); | |
195 | if (style == unknown_demangling) | |
196 | { | |
197 | fprintf (stderr, "%s: unknown demangling style `%s'\n", | |
198 | program_name, optarg); | |
199 | return (1); | |
200 | } | |
201 | else | |
202 | cplus_demangle_set_style (style); | |
203 | } | |
204 | break; | |
205 | } | |
206 | } | |
207 | ||
208 | if (optind < argc) | |
209 | { | |
210 | for ( ; optind < argc; optind++) | |
211 | { | |
212 | demangle_it (argv[optind]); | |
213 | } | |
214 | } | |
215 | else | |
216 | { | |
217 | switch (current_demangling_style) | |
218 | { | |
219 | case gnu_demangling: | |
220 | case lucid_demangling: | |
221 | case arm_demangling: | |
222 | case java_demangling: | |
223 | case edg_demangling: | |
224 | case gnat_demangling: | |
225 | case gnu_v3_demangling: | |
226 | case auto_demangling: | |
227 | valid_symbols = standard_symbol_characters (); | |
228 | break; | |
229 | case hp_demangling: | |
230 | valid_symbols = hp_symbol_characters (); | |
231 | break; | |
232 | default: | |
233 | /* Folks should explicitly indicate the appropriate alphabet for | |
234 | each demangling. Providing a default would allow the | |
235 | question to go unconsidered. */ | |
236 | fatal ("Internal error: no symbol alphabet for current style"); | |
237 | } | |
238 | ||
239 | for (;;) | |
240 | { | |
241 | int i = 0; | |
242 | c = getchar (); | |
243 | /* Try to read a label. */ | |
244 | while (c != EOF && (ISALNUM (c) || strchr (valid_symbols, c))) | |
245 | { | |
246 | if (i >= MBUF_SIZE-1) | |
247 | break; | |
248 | mbuffer[i++] = c; | |
249 | c = getchar (); | |
250 | } | |
251 | if (i > 0) | |
252 | { | |
253 | int skip_first = 0; | |
254 | ||
255 | mbuffer[i] = 0; | |
256 | if (mbuffer[0] == '.' || mbuffer[0] == '$') | |
257 | ++skip_first; | |
258 | if (strip_underscore && mbuffer[skip_first] == '_') | |
259 | ++skip_first; | |
260 | ||
261 | if (skip_first > i) | |
262 | skip_first = i; | |
263 | ||
264 | flags |= (int) style; | |
265 | result = cplus_demangle (mbuffer + skip_first, flags); | |
266 | if (result) | |
267 | { | |
268 | if (mbuffer[0] == '.') | |
269 | putc ('.', stdout); | |
270 | fputs (result, stdout); | |
271 | free (result); | |
272 | } | |
273 | else | |
274 | fputs (mbuffer, stdout); | |
275 | ||
276 | fflush (stdout); | |
277 | } | |
278 | if (c == EOF) | |
279 | break; | |
280 | putchar (c); | |
281 | fflush (stdout); | |
282 | } | |
283 | } | |
284 | ||
285 | return (0); | |
286 | } |