Commit | Line | Data |
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754e5da2 SG |
1 | /* TK interface routines. |
2 | Copyright 1994 Free Software Foundation, Inc. | |
3 | ||
4 | This file is part of GDB. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; if not, write to the Free Software | |
18 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
20 | #include "defs.h" | |
21 | #include "symtab.h" | |
22 | #include "inferior.h" | |
23 | #include "command.h" | |
24 | #include "bfd.h" | |
25 | #include "symfile.h" | |
26 | #include "objfiles.h" | |
27 | #include "target.h" | |
28 | #include <sys/types.h> | |
29 | #include <sys/time.h> | |
30 | #include <sys/param.h> | |
31 | #include <varargs.h> | |
32 | #include <sys/stat.h> | |
33 | #include <fcntl.h> | |
34 | #include <sys/filio.h> | |
35 | #include <setjmp.h> | |
36 | #include <signal.h> | |
37 | #include <sys/errno.h> | |
38 | #include <termios.h> | |
39 | #include <string.h> | |
40 | #include <tcl.h> | |
41 | #include <tk.h> | |
8532893d | 42 | #include <unistd.h> |
754e5da2 SG |
43 | |
44 | /* Non-zero means that we're doing the gdbtk interface. */ | |
45 | int gdbtk = 0; | |
46 | ||
47 | /* Non-zero means we are reloading breakpoints, etc from the | |
48 | Gdbtk kernel, and we should suppress various messages */ | |
49 | static int gdbtk_reloading = 0; | |
50 | ||
51 | /* Handle for TCL interpreter */ | |
52 | static Tcl_Interp *interp = NULL; | |
53 | ||
54 | /* Handle for TK main window */ | |
55 | static Tk_Window mainWindow = NULL; | |
56 | ||
57 | static void | |
58 | null_routine(arg) | |
59 | int arg; | |
60 | { | |
61 | } | |
62 | ||
63 | \f | |
64 | /* This routine redirects the output of fputs_unfiltered so that | |
65 | the user can see what's going on in his debugger window. */ | |
66 | ||
8532893d SG |
67 | static char holdbuf[200]; |
68 | static char *holdbufp = holdbuf; | |
69 | static int holdfree = sizeof (holdbuf); | |
70 | ||
754e5da2 | 71 | static void |
8532893d | 72 | flush_holdbuf () |
754e5da2 | 73 | { |
8532893d SG |
74 | if (holdbufp == holdbuf) |
75 | return; | |
76 | ||
77 | Tcl_VarEval (interp, "gdbtk_tcl_fputs ", "{", holdbuf, "}", NULL); | |
78 | holdbufp = holdbuf; | |
79 | holdfree = sizeof (holdbuf); | |
754e5da2 SG |
80 | } |
81 | ||
82 | static void | |
83 | gdbtk_flush (stream) | |
84 | FILE *stream; | |
85 | { | |
8532893d SG |
86 | flush_holdbuf (); |
87 | ||
754e5da2 SG |
88 | Tcl_VarEval (interp, "gdbtk_tcl_flush", NULL); |
89 | } | |
90 | ||
8532893d SG |
91 | static void |
92 | gdbtk_fputs (ptr) | |
93 | const char *ptr; | |
94 | { | |
95 | int len; | |
96 | ||
97 | len = strlen (ptr) + 1; | |
98 | ||
99 | if (len > holdfree) | |
100 | { | |
101 | flush_holdbuf (); | |
102 | ||
103 | if (len > sizeof (holdbuf)) | |
104 | { | |
105 | Tcl_VarEval (interp, "gdbtk_tcl_fputs ", "{", ptr, "}", NULL); | |
106 | return; | |
107 | } | |
108 | } | |
109 | ||
110 | strncpy (holdbufp, ptr, len); | |
111 | holdbufp += len - 1; | |
112 | holdfree -= len - 1; | |
113 | } | |
114 | ||
754e5da2 SG |
115 | static int |
116 | gdbtk_query (args) | |
117 | va_list args; | |
118 | { | |
119 | char *query; | |
120 | char buf[200]; | |
121 | long val; | |
122 | ||
123 | query = va_arg (args, char *); | |
124 | ||
125 | vsprintf(buf, query, args); | |
126 | Tcl_VarEval (interp, "gdbtk_tcl_query ", "{", buf, "}", NULL); | |
127 | ||
128 | val = atol (interp->result); | |
129 | return val; | |
130 | } | |
131 | \f | |
132 | static char * | |
133 | full_filename(symtab) | |
134 | struct symtab *symtab; | |
135 | { | |
136 | int pathlen; | |
137 | char *filename; | |
138 | ||
139 | if (!symtab) | |
140 | return NULL; | |
141 | ||
142 | if (symtab->fullname) | |
143 | return savestring(symtab->fullname, strlen(symtab->fullname)); | |
144 | ||
145 | if (symtab->filename[0] == '/') | |
146 | return savestring(symtab->filename, strlen(symtab->filename)); | |
147 | ||
148 | if (symtab->dirname) | |
149 | pathlen = strlen(symtab->dirname); | |
150 | else | |
151 | pathlen = 0; | |
152 | if (symtab->filename) | |
153 | pathlen += strlen(symtab->filename); | |
154 | ||
155 | filename = xmalloc(pathlen+1); | |
156 | ||
157 | if (symtab->dirname) | |
158 | strcpy(filename, symtab->dirname); | |
159 | else | |
160 | *filename = '\000'; | |
161 | if (symtab->filename) | |
162 | strcat(filename, symtab->filename); | |
163 | ||
164 | return filename; | |
165 | } | |
166 | \f | |
167 | static void | |
168 | breakpoint_notify(b, action) | |
169 | struct breakpoint *b; | |
170 | const char *action; | |
171 | { | |
172 | struct symbol *sym; | |
8532893d | 173 | char bpnum[50], line[50], pc[50]; |
754e5da2 SG |
174 | struct symtab_and_line sal; |
175 | char *filename; | |
176 | int v; | |
177 | ||
178 | if (b->type != bp_breakpoint) | |
179 | return; | |
180 | ||
181 | sal = find_pc_line (b->address, 0); | |
182 | ||
183 | filename = full_filename (sal.symtab); | |
184 | ||
185 | sprintf (bpnum, "%d", b->number); | |
186 | sprintf (line, "%d", sal.line); | |
8532893d | 187 | sprintf (pc, "0x%x", b->address); |
754e5da2 SG |
188 | |
189 | v = Tcl_VarEval (interp, | |
190 | "gdbtk_tcl_breakpoint ", | |
191 | action, | |
192 | " ", bpnum, | |
193 | " ", filename, | |
194 | " ", line, | |
8532893d | 195 | " ", pc, |
754e5da2 SG |
196 | NULL); |
197 | ||
198 | if (v != TCL_OK) | |
199 | { | |
200 | gdbtk_fputs (interp->result); | |
201 | gdbtk_fputs ("\n"); | |
202 | } | |
203 | ||
204 | if (filename) | |
205 | free (filename); | |
206 | } | |
207 | ||
208 | static void | |
209 | gdbtk_create_breakpoint(b) | |
210 | struct breakpoint *b; | |
211 | { | |
212 | breakpoint_notify(b, "create"); | |
213 | } | |
214 | ||
215 | static void | |
216 | gdbtk_delete_breakpoint(b) | |
217 | struct breakpoint *b; | |
218 | { | |
219 | breakpoint_notify(b, "delete"); | |
220 | } | |
221 | ||
222 | static void | |
223 | gdbtk_enable_breakpoint(b) | |
224 | struct breakpoint *b; | |
225 | { | |
226 | breakpoint_notify(b, "enable"); | |
227 | } | |
228 | ||
229 | static void | |
230 | gdbtk_disable_breakpoint(b) | |
231 | struct breakpoint *b; | |
232 | { | |
233 | breakpoint_notify(b, "disable"); | |
234 | } | |
235 | \f | |
236 | /* This implements the TCL command `gdb_loc', which returns a list consisting | |
237 | of the source and line number associated with the current pc. */ | |
238 | ||
239 | static int | |
240 | gdb_loc (clientData, interp, argc, argv) | |
241 | ClientData clientData; | |
242 | Tcl_Interp *interp; | |
243 | int argc; | |
244 | char *argv[]; | |
245 | { | |
246 | char *filename; | |
247 | char buf[100]; | |
248 | struct symtab_and_line sal; | |
249 | char *funcname; | |
8532893d | 250 | CORE_ADDR pc; |
754e5da2 SG |
251 | |
252 | if (argc == 1) | |
253 | { | |
254 | struct frame_info *frame; | |
255 | struct symbol *func; | |
754e5da2 SG |
256 | |
257 | frame = get_frame_info (selected_frame); | |
8532893d | 258 | |
754e5da2 | 259 | pc = frame ? frame->pc : stop_pc; |
8532893d | 260 | |
754e5da2 SG |
261 | sal = find_pc_line (pc, 0); |
262 | } | |
263 | else if (argc == 2) | |
264 | { | |
754e5da2 | 265 | struct symtabs_and_lines sals; |
8532893d | 266 | int nelts; |
754e5da2 SG |
267 | |
268 | sals = decode_line_spec (argv[1], 1); | |
269 | ||
8532893d SG |
270 | nelts = sals.nelts; |
271 | sal = sals.sals[0]; | |
272 | free (sals.sals); | |
273 | ||
754e5da2 SG |
274 | if (sals.nelts != 1) |
275 | { | |
276 | Tcl_SetResult (interp, "Ambiguous line spec", TCL_STATIC); | |
754e5da2 SG |
277 | return TCL_ERROR; |
278 | } | |
279 | ||
8532893d | 280 | pc = sal.pc; |
754e5da2 SG |
281 | } |
282 | else | |
283 | { | |
284 | Tcl_SetResult (interp, "wrong # args", TCL_STATIC); | |
285 | return TCL_ERROR; | |
286 | } | |
287 | ||
754e5da2 SG |
288 | if (sal.symtab) |
289 | Tcl_AppendElement (interp, sal.symtab->filename); | |
290 | else | |
291 | Tcl_AppendElement (interp, ""); | |
8532893d SG |
292 | |
293 | find_pc_partial_function (pc, &funcname, NULL, NULL); | |
754e5da2 | 294 | Tcl_AppendElement (interp, funcname); |
8532893d SG |
295 | |
296 | filename = full_filename (sal.symtab); | |
754e5da2 | 297 | Tcl_AppendElement (interp, filename); |
8532893d SG |
298 | |
299 | sprintf (buf, "%d", sal.line); | |
754e5da2 SG |
300 | Tcl_AppendElement (interp, buf); /* line number */ |
301 | ||
8532893d SG |
302 | sprintf (buf, "0x%x", pc); |
303 | Tcl_AppendElement (interp, buf); /* PC */ | |
304 | ||
754e5da2 SG |
305 | if (filename) |
306 | free(filename); | |
307 | ||
308 | return TCL_OK; | |
309 | } | |
310 | \f | |
311 | static int | |
312 | gdb_cmd_stub (cmd) | |
313 | char *cmd; | |
314 | { | |
315 | execute_command (cmd, 1); | |
316 | ||
317 | return 1; /* Indicate success */ | |
318 | } | |
319 | ||
320 | /* This implements the TCL command `gdb_cmd', which sends it's argument into | |
321 | the GDB command scanner. */ | |
322 | ||
323 | static int | |
324 | gdb_cmd (clientData, interp, argc, argv) | |
325 | ClientData clientData; | |
326 | Tcl_Interp *interp; | |
327 | int argc; | |
328 | char *argv[]; | |
329 | { | |
330 | int val; | |
331 | struct cleanup *old_chain; | |
332 | ||
333 | if (argc != 2) | |
334 | { | |
335 | Tcl_SetResult (interp, "wrong # args", TCL_STATIC); | |
336 | return TCL_ERROR; | |
337 | } | |
338 | ||
339 | old_chain = make_cleanup (null_routine, 0); | |
340 | ||
341 | val = catch_errors (gdb_cmd_stub, argv[1], "", RETURN_MASK_ERROR); | |
342 | ||
343 | bpstat_do_actions (&stop_bpstat); | |
344 | do_cleanups (old_chain); | |
345 | ||
8532893d SG |
346 | /* Drain all buffered command output */ |
347 | ||
348 | gdb_flush (gdb_stderr); | |
349 | gdb_flush (gdb_stdout); | |
350 | ||
754e5da2 SG |
351 | /* We could base the return value on val, but that would require most users |
352 | to use catch. Since GDB errors are already being handled elsewhere, I | |
353 | see no reason to pass them up to the caller. */ | |
354 | ||
355 | return TCL_OK; | |
356 | } | |
357 | ||
358 | static int | |
359 | gdb_listfiles (clientData, interp, argc, argv) | |
360 | ClientData clientData; | |
361 | Tcl_Interp *interp; | |
362 | int argc; | |
363 | char *argv[]; | |
364 | { | |
365 | int val; | |
366 | struct objfile *objfile; | |
367 | struct partial_symtab *psymtab; | |
368 | ||
369 | ALL_PSYMTABS (objfile, psymtab) | |
370 | Tcl_AppendElement (interp, psymtab->filename); | |
371 | ||
372 | return TCL_OK; | |
373 | } | |
374 | \f | |
375 | static void | |
376 | tk_command (cmd, from_tty) | |
377 | char *cmd; | |
378 | int from_tty; | |
379 | { | |
380 | Tcl_VarEval (interp, cmd, NULL); | |
381 | ||
382 | gdbtk_fputs (interp->result); | |
383 | gdbtk_fputs ("\n"); | |
384 | } | |
385 | ||
386 | static void | |
387 | cleanup_init (ignored) | |
388 | int ignored; | |
389 | { | |
390 | if (mainWindow != NULL) | |
391 | Tk_DestroyWindow (mainWindow); | |
392 | mainWindow = NULL; | |
393 | ||
394 | if (interp != NULL) | |
395 | Tcl_DeleteInterp (interp); | |
396 | interp = NULL; | |
397 | } | |
398 | ||
399 | static void | |
400 | gdbtk_init () | |
401 | { | |
402 | struct cleanup *old_chain; | |
403 | char *gdbtk_filename; | |
404 | ||
405 | old_chain = make_cleanup (cleanup_init, 0); | |
406 | ||
407 | /* First init tcl and tk. */ | |
408 | ||
409 | interp = Tcl_CreateInterp (); | |
410 | ||
411 | if (!interp) | |
412 | error ("Tcl_CreateInterp failed"); | |
413 | ||
414 | mainWindow = Tk_CreateMainWindow (interp, NULL, "gdb", "Gdb"); | |
415 | ||
416 | if (!mainWindow) | |
417 | return; /* DISPLAY probably not set */ | |
418 | ||
419 | if (Tcl_Init(interp) != TCL_OK) | |
420 | error ("Tcl_Init failed: %s", interp->result); | |
421 | ||
422 | if (Tk_Init(interp) != TCL_OK) | |
423 | error ("Tk_Init failed: %s", interp->result); | |
424 | ||
425 | Tcl_CreateCommand (interp, "gdb_cmd", gdb_cmd, NULL, NULL); | |
426 | Tcl_CreateCommand (interp, "gdb_loc", gdb_loc, NULL, NULL); | |
427 | Tcl_CreateCommand (interp, "gdb_listfiles", gdb_listfiles, NULL, NULL); | |
428 | ||
429 | gdbtk_filename = getenv ("GDBTK_FILENAME"); | |
8532893d SG |
430 | if (!gdbtk_filename) |
431 | if (access ("gdbtk.tcl", R_OK) == 0) | |
432 | gdbtk_filename = "gdbtk.tcl"; | |
433 | else | |
434 | gdbtk_filename = GDBTK_FILENAME; | |
435 | ||
436 | if (Tcl_EvalFile (interp, gdbtk_filename) != TCL_OK) | |
437 | error ("Failure reading %s: %s", gdbtk_filename, interp->result); | |
754e5da2 SG |
438 | |
439 | command_loop_hook = Tk_MainLoop; | |
440 | fputs_unfiltered_hook = gdbtk_fputs; | |
441 | print_frame_info_listing_hook = null_routine; | |
442 | query_hook = gdbtk_query; | |
443 | flush_hook = gdbtk_flush; | |
444 | create_breakpoint_hook = gdbtk_create_breakpoint; | |
445 | delete_breakpoint_hook = gdbtk_delete_breakpoint; | |
446 | enable_breakpoint_hook = gdbtk_enable_breakpoint; | |
447 | disable_breakpoint_hook = gdbtk_disable_breakpoint; | |
448 | ||
449 | discard_cleanups (old_chain); | |
450 | ||
451 | add_com ("tk", class_obscure, tk_command, | |
452 | "Send a command directly into tk."); | |
453 | } | |
454 | ||
455 | /* Come here during initialze_all_files () */ | |
456 | ||
457 | void | |
458 | _initialize_gdbtk () | |
459 | { | |
460 | if (no_windows) | |
461 | return; | |
462 | ||
463 | /* Tell the rest of the world that Gdbtk is now set up. */ | |
464 | ||
465 | init_ui_hook = gdbtk_init; | |
466 | } |