1 /* MSPDebug - debugging tool for the eZ430
2 * Copyright (C) 2009, 2010 Daniel Beer
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19 #include <stdio.h>
20 #include <stdlib.h>
21 #include <string.h>
22 #include <ctype.h>
23 #include <stdint.h>
24 #include <regex.h>
25
26 #include "stab.h"
27 #include "expr.h"
28 #include "binfile.h"
29 #include "util.h"
30 #include "output.h"
31 #include "output_util.h"
32 #include "vector.h"
33 #include "sym.h"
34 #include "reader.h"
35 #include "demangle.h"
36
cmd_eval(char ** arg)37 int cmd_eval(char **arg)
38 {
39 address_t addr;
40 char name[MAX_SYMBOL_LENGTH];
41
42 if (expr_eval(*arg, &addr) < 0) {
43 printc_err("=: can't parse: %s\n", *arg);
44 return -1;
45 }
46
47 print_address(addr, name, sizeof(name), 0);
48 printc("0x%05x = %s\n", addr, name);
49
50 return 0;
51 }
52
cmd_sym_load_add(int clear,char ** arg)53 static int cmd_sym_load_add(int clear, char **arg)
54 {
55 FILE *in;
56 char * path;
57
58 if (clear && prompt_abort(MODIFY_SYMS))
59 return 0;
60
61 path = expand_tilde(*arg);
62 if (!path)
63 return -1;
64
65 in = fopen(path, "rb");
66 free(path);
67 if (!in) {
68 printc_err("sym: %s: %s\n", *arg, last_error());
69 return -1;
70 }
71
72 if (clear) {
73 stab_clear();
74 unmark_modified(MODIFY_SYMS);
75 } else {
76 mark_modified(MODIFY_SYMS);
77 }
78
79 if (binfile_syms(in) < 0) {
80 fclose(in);
81 return -1;
82 }
83
84 fclose(in);
85
86 return 0;
87 }
88
savemap_cb(void * user_data,const char * name,address_t value)89 static int savemap_cb(void *user_data, const char *name, address_t value)
90 {
91 FILE *savemap_out = (FILE *)user_data;
92
93 if (fprintf(savemap_out, "%04x t %s\n", value, name) < 0) {
94 pr_error("sym: can't write to file");
95 return -1;
96 }
97
98 return 0;
99 }
100
cmd_sym_savemap(char ** arg)101 static int cmd_sym_savemap(char **arg)
102 {
103 FILE *savemap_out;
104 char *fname = get_arg(arg);
105
106 if (!fname) {
107 printc_err("sym: filename required to save map\n");
108 return -1;
109 }
110
111 savemap_out = fopen(fname, "w");
112 if (!savemap_out) {
113 printc_err("sym: couldn't write to %s: %s\n", fname,
114 last_error());
115 return -1;
116 }
117
118 if (stab_enum(savemap_cb, savemap_out) < 0) {
119 fclose(savemap_out);
120 return -1;
121 }
122
123 if (fclose(savemap_out) < 0) {
124 printc_err("sym: error on close: %s\n", last_error());
125 return -1;
126 }
127
128 unmark_modified(MODIFY_SYMS);
129 return 0;
130 }
131
print_sym(void * user_data,const char * name,address_t value)132 static int print_sym(void *user_data, const char *name, address_t value)
133 {
134 (void)user_data;
135
136 char demangled[MAX_SYMBOL_LENGTH];
137 if (demangle(name, demangled, sizeof(demangled)) > 0)
138 printc("0x%04x: %s (%s)\n", value, name, demangled);
139 else
140 printc("0x%04x: %s\n", value, name);
141
142 return 0;
143 }
144
find_sym(void * user_data,const char * name,address_t value)145 static int find_sym(void *user_data, const char *name, address_t value)
146 {
147 regex_t *find_preg = (regex_t *)user_data;
148
149 char demangled[MAX_SYMBOL_LENGTH];
150 int len = demangle(name, demangled, sizeof(demangled));
151
152 if (!regexec(find_preg, name, 0, NULL, 0) ||
153 (len > 0 && !regexec(find_preg, demangled, 0, NULL, 0))) {
154 if (len > 0)
155 printc("0x%04x: %s (%s)\n", value, name, demangled);
156 else
157 printc("0x%04x: %s\n", value, name);
158 }
159
160 return 0;
161 }
162
cmd_sym_find(char ** arg)163 static int cmd_sym_find(char **arg)
164 {
165 regex_t find_preg;
166 char *expr = get_arg(arg);
167
168 if (!expr) {
169 stab_enum(print_sym, NULL);
170 return 0;
171 }
172
173 if (regcomp(&find_preg, expr, REG_EXTENDED | REG_NOSUB)) {
174 printc_err("sym: failed to compile: %s\n", expr);
175 return -1;
176 }
177
178 stab_enum(find_sym, &find_preg);
179 regfree(&find_preg);
180 return 0;
181 }
182
183 struct rename_record {
184 char old_name[MAX_SYMBOL_LENGTH];
185 int start, end;
186 };
187
188 struct rename_data {
189 struct vector list;
190 regex_t preg;
191 };
192
renames_do(struct rename_data * rename,const char * replace)193 static int renames_do(struct rename_data *rename, const char *replace)
194 {
195 int i;
196 int count = 0;
197
198 for (i = 0; i < rename->list.size; i++) {
199 struct rename_record *r =
200 VECTOR_PTR(rename->list, i, struct rename_record);
201 char new_name[MAX_SYMBOL_LENGTH];
202 int len = r->start;
203 address_t value;
204
205 if (len + 1 > sizeof(new_name))
206 len = sizeof(new_name) - 1;
207
208 memcpy(new_name, r->old_name, len);
209 snprintf(new_name + len,
210 sizeof(new_name) - len,
211 "%s%s", replace, r->old_name + r->end);
212
213 printc("%s -> %s\n", r->old_name, new_name);
214
215 if (stab_get(r->old_name, &value) < 0) {
216 printc_err("sym: warning: "
217 "symbol missing: %s\n",
218 r->old_name);
219 } else {
220 stab_del(r->old_name);
221 if (stab_set(new_name, value) < 0) {
222 printc_err("sym: warning: "
223 "failed to set new name: %s\n",
224 new_name);
225 }
226 }
227
228 count++;
229 }
230
231 printc("%d symbols renamed\n", count);
232 return 0;
233 }
234
find_renames(void * user_data,const char * name,address_t value)235 static int find_renames(void *user_data, const char *name, address_t value)
236 {
237 struct rename_data *rename = (struct rename_data *)user_data;
238 regmatch_t pmatch;
239
240 (void)value;
241
242 if (!regexec(&rename->preg, name, 1, &pmatch, 0) &&
243 pmatch.rm_so >= 0 && pmatch.rm_eo > pmatch.rm_so) {
244 struct rename_record r;
245
246 strncpy(r.old_name, name, sizeof(r.old_name));
247 r.old_name[sizeof(r.old_name) - 1] = 0;
248 r.start = pmatch.rm_so;
249 r.end = pmatch.rm_eo;
250
251 return vector_push(&rename->list, &r, 1);
252 }
253
254 return 0;
255 }
256
cmd_sym_rename(char ** arg)257 static int cmd_sym_rename(char **arg)
258 {
259 const char *expr = get_arg(arg);
260 const char *replace = get_arg(arg);
261 int ret;
262 struct rename_data rename;
263
264 if (!(expr && replace)) {
265 printc_err("sym: expected pattern and replacement\n");
266 return -1;
267 }
268
269 if (regcomp(&rename.preg, expr, REG_EXTENDED)) {
270 printc_err("sym: failed to compile: %s\n", expr);
271 return -1;
272 }
273
274 vector_init(&rename.list, sizeof(struct rename_record));
275
276 if (stab_enum(find_renames, &rename) < 0) {
277 printc_err("sym: rename failed\n");
278 regfree(&rename.preg);
279 vector_destroy(&rename.list);
280 return -1;
281 }
282
283 regfree(&rename.preg);
284 ret = renames_do(&rename, replace);
285 vector_destroy(&rename.list);
286
287 if (ret > 0)
288 mark_modified(MODIFY_SYMS);
289
290 return ret >= 0 ? 0 : -1;
291 }
292
cmd_sym_del(char ** arg)293 static int cmd_sym_del(char **arg)
294 {
295 char *name = get_arg(arg);
296
297 if (!name) {
298 printc_err("sym: need a name to delete "
299 "symbol table entries\n");
300 return -1;
301 }
302
303 if (stab_del(name) < 0) {
304 printc_err("sym: can't delete nonexistent symbol: %s\n",
305 name);
306 return -1;
307 }
308
309 mark_modified(MODIFY_SYMS);
310 return 0;
311 }
312
cmd_sym(char ** arg)313 int cmd_sym(char **arg)
314 {
315 char *subcmd = get_arg(arg);
316
317 if (!subcmd) {
318 printc_err("sym: need to specify a subcommand "
319 "(try \"help sym\")\n");
320 return -1;
321 }
322
323 if (!strcasecmp(subcmd, "clear")) {
324 if (prompt_abort(MODIFY_SYMS))
325 return 0;
326 stab_clear();
327 unmark_modified(MODIFY_SYMS);
328 return 0;
329 }
330
331 if (!strcasecmp(subcmd, "set")) {
332 char *name = get_arg(arg);
333 char *val_text = get_arg(arg);
334 address_t value;
335
336 if (!(name && val_text)) {
337 printc_err("sym: need a name and value to set "
338 "symbol table entries\n");
339 return -1;
340 }
341
342 if (expr_eval(val_text, &value) < 0) {
343 printc_err("sym: can't parse value: %s\n",
344 val_text);
345 return -1;
346 }
347
348 if (stab_set(name, value) < 0)
349 return -1;
350
351 mark_modified(MODIFY_SYMS);
352 return 0;
353 }
354
355 if (!strcasecmp(subcmd, "del"))
356 return cmd_sym_del(arg);
357 if (!strcasecmp(subcmd, "import"))
358 return cmd_sym_load_add(1, arg);
359 if (!strcasecmp(subcmd, "import+"))
360 return cmd_sym_load_add(0, arg);
361 if (!strcasecmp(subcmd, "export"))
362 return cmd_sym_savemap(arg);
363 if (!strcasecmp(subcmd, "rename"))
364 return cmd_sym_rename(arg);
365 if (!strcasecmp(subcmd, "find"))
366 return cmd_sym_find(arg);
367
368 printc_err("sym: unknown subcommand: %s\n", subcmd);
369 return -1;
370 }
371