Commit | Line | Data |
---|---|---|
c906108c | 1 | If you find inaccuracies in this list, please send mail to |
2a00c9ce AC |
2 | gdb-patches@sourceware.cygnus.com. If you would like to work on any |
3 | of these, you should consider sending mail to the same address, to | |
4 | find out whether anyone else is working on it. | |
c906108c | 5 | |
138f88c0 | 6 | |
4afc966c AC |
7 | Known problems in GDB 5.0 |
8 | ========================= | |
138f88c0 | 9 | |
bc9e5bbf AC |
10 | Below is a list of problems identified during the GDB 5.0 release |
11 | cycle. People hope to have these problems fixed in a follow-on | |
12 | release. | |
138f88c0 | 13 | |
138f88c0 AC |
14 | -- |
15 | ||
4fd99b5a AC |
16 | The BFD directory requires bug-fixed AUTOMAKE et.al. |
17 | ||
18 | AUTOMAKE 1.4 incorrectly set the TEXINPUTS environment variable. It | |
19 | contained the full path to texinfo.tex when it should have only | |
20 | contained the directory. The bug has been fixed in the current | |
21 | AUTOMAKE sources. Automake snapshots can be found in: | |
22 | ftp://sourceware.cygnus.com/pub/gdb/snapshots | |
23 | and ftp://sourceware.cygnus.com/pub/binutils | |
24 | ||
25 | -- | |
26 | ||
bc9e5bbf | 27 | RFD: infrun.c: No bpstat_stop_status call after proceed over break? |
138f88c0 AC |
28 | http://sourceware.cygnus.com/ml/gdb-patches/2000-q1/msg00665.html |
29 | ||
bc9e5bbf AC |
30 | GDB misses watchpoint triggers after proceeding over a breakpoint on |
31 | x86 targets. | |
32 | ||
138f88c0 AC |
33 | -- |
34 | ||
67edb2c6 AC |
35 | x86 linux GDB and SIGALRM (???) |
36 | http://sourceware.cygnus.com/ml/gdb/2000-q1/msg00803.html | |
37 | ||
bc9e5bbf AC |
38 | I know there are problems with single stepping through signal |
39 | handlers. These problems were present in 4.18. They were just masked | |
40 | because 4.18 failed to recognize signal handlers. Fixing it is not | |
41 | easy, and will require changes to handle_inferior_event(), that I | |
42 | prefer not to make before the 5.0 release. | |
67edb2c6 | 43 | |
bc9e5bbf | 44 | Mark |
67edb2c6 AC |
45 | |
46 | -- | |
47 | ||
9d6d78f2 AC |
48 | Revised UDP support (was: Re: [Fwd: [patch] UDP transport support]) |
49 | http://sourceware.cygnus.com/ml/gdb-patches/2000-04/msg00000.html | |
50 | ||
bc9e5bbf AC |
51 | (Broken) support for GDB's remote protocol across UDP is to be |
52 | included in the follow-on release. | |
138f88c0 | 53 | |
b2f4b24d AC |
54 | -- |
55 | ||
56 | Can't build IRIX -> arm GDB. | |
57 | http://sourceware.cygnus.com/ml/gdb-patches/2000-04/msg00356.html | |
58 | ||
59 | David Whedon writes: | |
60 | > Now I'm building for an embedded arm target. If there is a way of turning | |
61 | > remote-rdi off, I couldn't find it. It looks like it gets built by default | |
62 | > in gdb/configure.tgt(line 58) Anyway, the build dies in | |
63 | > gdb/rdi-share/unixcomm.c. SERPORT1 et. al. never get defined because we | |
64 | > aren't one of the architectures supported. | |
65 | ||
6bc37a96 AC |
66 | -- |
67 | ||
68 | Problem with weak functions | |
69 | http://sourceware.cygnus.com/ml/gdb/2000-05/msg00060.html | |
70 | ||
71 | Dan Nicolaescu writes: | |
72 | > It seems that gdb-4.95.1 does not display correctly the function when | |
73 | > stoping in weak functions. | |
74 | > | |
75 | > It stops in a function that is defined as weak, not in the function | |
76 | > that is actualy run... | |
b2f4b24d | 77 | |
26099b4a AC |
78 | -- |
79 | ||
80 | GDB 5.0 doesn't work on Linux/SPARC | |
81 | ||
3fffcb5e AC |
82 | -- |
83 | ||
4afc966c AC |
84 | Code Cleanups: Next Release |
85 | =========================== | |
3fffcb5e | 86 | |
4afc966c AC |
87 | The following are small cleanups that will hopefully be completed by |
88 | the follow on to 5.0. | |
3fffcb5e | 89 | |
138f88c0 AC |
90 | -- |
91 | ||
4afc966c | 92 | Delete macro TARGET_BYTE_ORDER_SELECTABLE. |
bc9e5bbf | 93 | |
4afc966c AC |
94 | Patches in the database. |
95 | ||
96 | -- | |
97 | ||
26099b4a | 98 | Purge PARAMS. |
4afc966c AC |
99 | |
100 | Eliminate all uses of PARAMS in GDB's source code. | |
101 | ||
102 | -- | |
103 | ||
78566ebe AC |
104 | Fix copyright notices. |
105 | ||
106 | Turns out that ``1998-2000'' isn't considered valid :-( | |
107 | ||
108 | http://sourceware.cygnus.com/ml/gdb-patches/2000-05/msg00467.html | |
109 | ||
1ba607ad AC |
110 | -- |
111 | ||
112 | Find something better than DEFAULT_BFD_ARCH, DEFAULT_BFD_VEC to | |
113 | determine the default isa/byte-order. | |
114 | ||
115 | -- | |
116 | ||
117 | Rely on BFD_BIG_ENDIAN and BFD_LITTLE_ENDIAN instead of host dependant | |
118 | BIG_ENDIAN and LITTLE_ENDIAN. | |
119 | ||
4afc966c AC |
120 | -- |
121 | ||
122 | Code Cleanups: General | |
123 | ====================== | |
124 | ||
125 | The following are more general cleanups and fixes. They are not tied | |
126 | to any specific release. | |
bc9e5bbf AC |
127 | |
128 | -- | |
129 | ||
d8038014 AC |
130 | Eliminate more compiler warnings. |
131 | ||
132 | Of course there also needs to be the usual debate over which warnings | |
133 | are valid and how to best go about this. | |
134 | ||
135 | One method: choose a single option; get agreement that it is | |
136 | reasonable; try it out to see if there isn't anything silly about it | |
137 | (-Wunused-parameters is an example of that) then incrementally hack | |
138 | away. | |
139 | ||
140 | The other method is to enable all warnings and eliminate them from one | |
141 | file at a time. | |
142 | ||
143 | -- | |
144 | ||
4afc966c | 145 | Elimination of ``(catch_errors_ftype *) func''. |
bc9e5bbf | 146 | |
4afc966c | 147 | Like make_cleanup_func it isn't portable. |
6ecce94d AC |
148 | http://sourceware.cygnus.com/ml/gdb-patches/2000-q1/msg00791.html |
149 | http://sourceware.cygnus.com/ml/gdb-patches/2000-q1/msg00814.html | |
150 | ||
4afc966c AC |
151 | |
152 | -- | |
153 | ||
154 | Nuke USG define. | |
155 | ||
156 | -- | |
157 | ||
158 | [PATCH/5] src/intl/Makefile.in:distclean additions | |
159 | http://sourceware.cygnus.com/ml/gdb-patches/2000-04/msg00363.html | |
160 | ||
161 | Do not forget to merge the patch back into the trunk. | |
162 | ||
163 | -- | |
164 | ||
165 | Rationalize the host-endian code (grep for HOST_BYTE_ORDER). | |
166 | ||
167 | At present defs.h includes <endian.h> (which is linux specific) yet | |
168 | almost nothing depends on it. Suggest "gdb_endian.h" which can also | |
169 | handle <machine/endian.h> and only include that where it is really | |
170 | needed. | |
171 | ||
172 | -- | |
173 | ||
174 | Replace asprintf() calls with xasprintf() calls. | |
175 | ||
176 | As with things like strdup() most calls to asprintf() don't check the | |
177 | return value. | |
178 | ||
179 | -- | |
180 | ||
181 | Replace strsave() + mstrsave() with libiberty:xstrdup(). | |
182 | ||
183 | -- | |
184 | ||
185 | Replace savestring() with something from libiberty. | |
186 | ||
187 | An xstrldup()? but that would have different semantics. | |
188 | ||
189 | -- | |
190 | ||
191 | Rationalize use of floatformat_unknown in GDB sources. | |
192 | ||
193 | Instead of defaulting to floatformat_unknown, should hosts/targets | |
194 | specify the value explicitly? | |
195 | ||
196 | http://sourceware.cygnus.com/ml/gdb-patches/2000-05/msg00447.html | |
197 | ||
198 | -- | |
199 | ||
200 | Add a ``name'' member to include/floatformat.h:struct floatformat. | |
201 | Print that name in gdbarch.c. | |
202 | ||
203 | -- | |
204 | ||
205 | Sort out the harris mess in include/floatformat.h (it hardwires two | |
206 | different floating point formats). | |
207 | ||
208 | -- | |
209 | ||
210 | See of the GDB local floatformat_do_doublest() and libiberty's | |
211 | floatformat_to_double (which was once GDB's ...) can be merged some | |
212 | how. | |
213 | ||
214 | -- | |
215 | ||
216 | Eliminate mmalloc() from GDB. | |
217 | ||
218 | Also eliminate it from defs.h. | |
219 | ||
220 | -- | |
221 | ||
222 | Eliminate PTR. ISO-C allows ``void *''. | |
223 | ||
224 | -- | |
225 | ||
226 | Eliminate abort (). | |
227 | ||
228 | GDB should never abort. GDB should either throw ``error ()'' or | |
229 | ``internal_error ()''. Better still GDB should naturally unwind with | |
230 | an error status. | |
231 | ||
232 | -- | |
233 | ||
234 | GDB probably doesn't build on FreeBSD pre 2.2.x | |
235 | http://sourceware.cygnus.com/ml/gdb-patches/2000-05/msg00378.html | |
236 | ||
237 | Fixes to get FreeBSD working on 2.2.x, 3.x and 4.x caused the code to | |
238 | suffer bit rot. | |
bc9e5bbf AC |
239 | |
240 | -- | |
241 | ||
242 | Updated readline | |
243 | ||
78566ebe AC |
244 | Readline 4.? is out. A merge wouldn't hurt. Patches are in: |
245 | ||
246 | http://sourceware.cygnus.com/ml/gdb-patches/2000-05/msg00436.html | |
247 | ||
248 | -- | |
249 | ||
250 | Deprecate "fg". Apparently ``fg'' is actually continue. | |
251 | ||
252 | http://sourceware.cygnus.com/ml/gdb-patches/2000-05/msg00417.html | |
253 | ||
254 | -- | |
255 | ||
256 | Deprecate current use of ``floatformat_unknown''. | |
257 | ||
258 | Require all targets to explicitly provide their float format instead | |
259 | of defaulting to floatformat unknown. Doing the latter leads to nasty | |
260 | bugs. | |
261 | ||
262 | http://sourceware.cygnus.com/ml/gdb-patches/2000-05/msg00447.html | |
bc9e5bbf AC |
263 | |
264 | -- | |
265 | ||
78566ebe AC |
266 | Rationalize floatformat_to_double() vs floatformat_to_doublest(). |
267 | ||
268 | Looks like GDB migrated floatformat_to_double() to libiberty but then | |
269 | turned around and created a ..._to_doublest() the latter containing | |
270 | several bug fixes. | |
271 | ||
272 | http://sourceware.cygnus.com/ml/gdb-patches/2000-05/msg00472.html | |
273 | ||
274 | -- | |
275 | ||
276 | Move floatformat_ia64_ext to libiberty/include floatformat.[ch]. | |
277 | ||
278 | http://sourceware.cygnus.com/ml/gdb-patches/2000-05/msg00466.html | |
279 | ||
280 | -- | |
281 | ||
78566ebe AC |
282 | Follow through `make check' with --enable-shared. |
283 | ||
284 | When the srcware tree is configured with --enable-shared, the `expect' | |
285 | program won't run properly. Jim Wilson found out gdb has a local hack | |
286 | to set LD_LIBRARY_PATH, but, AFAIK, no other project has been hacked | |
287 | similarly. | |
288 | ||
289 | http://sourceware.cygnus.com/ml/gdb/2000-q1/msg00845.html | |
290 | ||
b4a20239 AC |
291 | -- |
292 | ||
b4a20239 AC |
293 | The ``maintenance deprecate set endian big'' command doesn't notice |
294 | that it is deprecating ``set endian'' and not ``set endian big'' (big | |
295 | is implemented using an enum). Is anyone going to notice this? | |
296 | ||
297 | -- | |
298 | ||
299 | When tab expanding something like ``set arch<tab>'' ignore the | |
300 | deprecated ``set archdebug'' and expand to ``set architecture''. | |
301 | ||
78566ebe AC |
302 | -- |
303 | ||
53904c9e AC |
304 | Eliminate ``arm_register_names[j] = (char *) regnames[j]'' and the |
305 | like from arm-tdep.c. | |
306 | ||
307 | -- | |
308 | ||
309 | Fix uses of ->function.cfunc = set_function(). | |
310 | ||
311 | The command.c code calls sfunc() when a set command. Rather than | |
312 | change it suggest fixing the callback function so that it is more | |
313 | useful. See: | |
314 | ||
315 | http://sourceware.cygnus.com/ml/gdb-patches/2000-06/msg00062.html | |
316 | ||
317 | See also ``Fix implementation of ``target xxx''.'' below. | |
318 | ||
bf64bfd6 AC |
319 | -- |
320 | ||
321 | IRIX 3.x support is probably broken. | |
322 | ||
53904c9e | 323 | -- |
78566ebe | 324 | |
4afc966c AC |
325 | New Features and Fixes |
326 | ====================== | |
bc9e5bbf | 327 | |
4afc966c AC |
328 | These are harder than cleanups but easier than work involving |
329 | fundamental architectural change. | |
bc9e5bbf AC |
330 | |
331 | -- | |
332 | ||
4afc966c AC |
333 | Add built-by, build-date, tm, xm, nm and anything else into gdb binary |
334 | so that you can see how the GDB was created. | |
bc9e5bbf | 335 | |
4afc966c AC |
336 | Some of these (*m.h) would be added to the generated config.h. That |
337 | in turn would fix a long standing bug where by the build process many | |
338 | not notice a changed tm.h file. Since everything depends on config.h, | |
339 | a change to *m.h forces a change to config.h and, consequently forces | |
340 | a rebuild. | |
bc9e5bbf AC |
341 | |
342 | -- | |
343 | ||
4afc966c AC |
344 | Add an "info bfd" command that displays supported object formats, |
345 | similarly to objdump -i. | |
5683e87a | 346 | |
4afc966c | 347 | Is there a command already? |
5683e87a AC |
348 | |
349 | -- | |
350 | ||
4afc966c | 351 | Fix ``I'm sorry, Dave, I can't do that.'' from symfile.c. |
bc9e5bbf | 352 | |
4afc966c | 353 | This requires internationalization. |
bc9e5bbf | 354 | |
4afc966c | 355 | -- |
bc9e5bbf | 356 | |
4afc966c | 357 | Convert GDB build process to AUTOMAKE. |
bc9e5bbf | 358 | |
4afc966c | 359 | See also sub-directory configure below. |
138f88c0 | 360 | |
b4a20239 AC |
361 | The current convention is (kind of) to use $(<header>_h) in all |
362 | dependency lists. It isn't done in a consistent way. | |
363 | ||
67edb2c6 AC |
364 | -- |
365 | ||
4afc966c | 366 | Cleanup configury support for optional sub-directories. |
7ae38352 | 367 | |
4afc966c AC |
368 | Check how GCC handles multiple front ends for an example of how things |
369 | could work. A tentative first step is to rationalize things so that | |
370 | all sub directories are handled in a fashion similar to gdb/mi. | |
371 | ||
372 | See also automake above. | |
7ae38352 AC |
373 | |
374 | -- | |
375 | ||
4afc966c AC |
376 | Restructure gdb directory tree so that it avoids any 8.3 and 14 |
377 | filename problems. | |
67edb2c6 | 378 | |
4afc966c | 379 | -- |
67edb2c6 | 380 | |
4afc966c AC |
381 | Add a transcript mechanism to GDB. |
382 | ||
383 | Such a mechanism might log all gdb input and output to a file in a | |
384 | form that would allow it to be replayed. It could involve ``gdb | |
385 | --transcript=FILE'' or it could involve ``(gdb) transcript file''. | |
67edb2c6 AC |
386 | |
387 | -- | |
388 | ||
4afc966c | 389 | Can the xdep files be replaced by autoconf? |
bc9e5bbf | 390 | |
4afc966c | 391 | -- |
bc9e5bbf | 392 | |
4afc966c | 393 | Document trace machinery |
bc9e5bbf | 394 | |
4afc966c AC |
395 | -- |
396 | ||
78566ebe AC |
397 | Document ui-out and ui-file. |
398 | ||
399 | http://sourceware.cygnus.com/ml/gdb/2000-04/msg00121.html | |
400 | ||
401 | -- | |
402 | ||
403 | Update texinfo.tex to latest? | |
404 | ||
405 | ||
406 | ||
407 | -- | |
408 | ||
409 | Incorporate agentexpr.texi into gdb.texinfo | |
410 | ||
411 | agentexpr.texi mostly describes the details of the byte code used for | |
412 | tracepoints, not the internals of the support for this in GDB. So it | |
413 | looks like gdb.texinfo is a better place for this information. | |
414 | ||
415 | http://sourceware.cygnus.com/ml/gdb-patches/2000-04/msg00566.html | |
416 | ||
417 | -- | |
418 | ||
4afc966c | 419 | Document overlay machinery. |
bc9e5bbf | 420 | |
7ae38352 AC |
421 | -- |
422 | ||
4afc966c | 423 | ``(gdb) catch signal SIGNAL'' |
7ae38352 | 424 | |
4afc966c AC |
425 | Overlaps with ``handle SIGNAL'' but the implied behavour is different. |
426 | You can attach commands to a catch but not a handle. A handle has a | |
427 | limited number of hardwired actions. | |
7ae38352 AC |
428 | |
429 | -- | |
430 | ||
4afc966c | 431 | Get the TUI working on all platforms. |
7ae38352 | 432 | |
bc9e5bbf AC |
433 | -- |
434 | ||
4afc966c AC |
435 | Add support for ``gdb --- PROGRAM ARGS ...''. |
436 | Add support for ``gdb -cmd=...'' | |
9debab2f | 437 | |
4afc966c AC |
438 | Along with many variations. Check: |
439 | ||
440 | ????? for a full discussion. | |
441 | ||
442 | for a discussion. | |
9debab2f AC |
443 | |
444 | -- | |
445 | ||
4afc966c | 446 | Implement ``(gdb) !ls''. |
e55e8cee | 447 | |
4afc966c AC |
448 | Which is very different from ``(gdb) ! ls''. Implementing the latter |
449 | is trivial. | |
450 | ||
451 | http://sourceware.cygnus.com/ml/gdb/2000-q1/msg00034.html | |
e55e8cee AC |
452 | |
453 | -- | |
454 | ||
b4a20239 AC |
455 | Change the (char *list[]) to (const char (*)[]) so that dynamic lists can |
456 | be passed. | |
457 | ||
458 | -- | |
459 | ||
460 | When tab expanding something like ``set arch<tab>'' ignore the | |
461 | deprecated ``set archdebug'' and expand to ``set architecture''. | |
462 | ||
463 | -- | |
464 | ||
4afc966c AC |
465 | Replace the code that uses the host FPU with an emulator of the target |
466 | FPU. | |
7ae38352 | 467 | |
4afc966c AC |
468 | -- |
469 | ||
470 | Thread Support | |
471 | ============== | |
7ae38352 AC |
472 | |
473 | -- | |
474 | ||
4afc966c AC |
475 | Generic: lin-thread cannot handle thread exit (Mark Kettenis, Michael |
476 | Snyder) http://sourceware.cygnus.com/ml/gdb/2000-q1/msg00525.html | |
7ae38352 | 477 | |
4afc966c AC |
478 | The thread_db assisted debugging code doesn't handle exiting threads |
479 | properly, at least in combination with glibc 2.1.3 (the framework is | |
480 | there, just not the actual code). There are at least two problems | |
481 | that prevent this from working. | |
482 | ||
483 | As an additional reference point, the pre thread_db code did not work | |
484 | either. | |
7ae38352 AC |
485 | |
486 | -- | |
487 | ||
4afc966c AC |
488 | GNU/Linux/x86 and random thread signals (and Solaris/SPARC but not |
489 | Solaris/x86). | |
490 | http://sourceware.cygnus.com/ml/gdb/2000-q1/msg00336.html | |
7ae38352 | 491 | |
4afc966c AC |
492 | Christopher Blizzard writes: |
493 | ||
494 | So, I've done some more digging into this and it looks like Jim | |
495 | Kingdon has reported this problem in the past: | |
496 | ||
497 | http://sourceware.cygnus.com/ml/bug-gdb/1999-10/msg00058.html | |
498 | ||
499 | I can reproduce this problem both with and without Tom's patch. Has | |
500 | anyone seen this before? Maybe have a solution for it hanging around? | |
501 | :) | |
502 | ||
503 | There's a test case for this documented at: | |
504 | ||
505 | when debugging threaded applications you get extra SIGTRAPs | |
506 | http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=9565 | |
507 | ||
508 | [There should be a GDB testcase - cagney] | |
7ae38352 AC |
509 | |
510 | -- | |
511 | ||
4afc966c AC |
512 | GDB5 TOT on unixware 7 |
513 | http://sourceware.cygnus.com/ml/gdb/2000-04/msg00119.html | |
7ae38352 | 514 | |
4afc966c AC |
515 | Robert Lipe writes: |
516 | > I just spun the top of tree of the GDB5 branch on UnixWare 7. As a | |
517 | > practical matter, the current thread support is somewhat more annoying | |
518 | > than when GDB was thread-unaware. | |
7ae38352 AC |
519 | |
520 | -- | |
521 | ||
4afc966c | 522 | Migrate qfThreadInfo packet -> qThreadInfo. (Andrew Cagney) |
7ae38352 | 523 | |
4afc966c AC |
524 | Add support for packet enable/disable commands with these thread |
525 | packets. General cleanup. | |
526 | ||
527 | [PATCH] Document the ThreadInfo remote protocol queries | |
528 | http://sourceware.cygnus.com/ml/gdb-patches/2000-q1/msg00832.html | |
529 | ||
530 | [PATCH] "info threads" queries for remote.c | |
531 | http://sourceware.cygnus.com/ml/gdb-patches/2000-q1/msg00831.html | |
7ae38352 AC |
532 | |
533 | -- | |
534 | ||
4afc966c AC |
535 | Language Support |
536 | ================ | |
7ae38352 | 537 | |
4afc966c | 538 | New languages come onto the scene all the time. |
7ae38352 AC |
539 | |
540 | -- | |
541 | ||
4afc966c | 542 | Pascal (Pierre Muller, David Taylor) |
7ae38352 | 543 | |
4afc966c AC |
544 | Pierre Muller has contributed patches for adding Pascal Language |
545 | support to GDB. | |
546 | ||
547 | 2 pascal language patches inserted in database | |
548 | http://sourceware.cygnus.com/ml/gdb/2000-q1/msg00521.html | |
549 | ||
550 | Indent -gnu ? | |
551 | http://sourceware.cygnus.com/ml/gdb/2000-q1/msg00496.html | |
552 | ||
553 | -- | |
554 | ||
555 | Java (Anthony Green, David Taylor) | |
556 | ||
557 | Anthony Green has a number of Java patches that did not make it into | |
558 | the 5.0 release. | |
559 | ||
560 | Patch: java tests | |
561 | http://sourceware.cygnus.com/ml/gdb-patches/2000-q1/msg00512.html | |
562 | ||
563 | Patch: java booleans | |
564 | http://sourceware.cygnus.com/ml/gdb-patches/2000-q1/msg00515.html | |
565 | ||
566 | Patch: handle N_MAIN stab | |
567 | http://sourceware.cygnus.com/ml/gdb-patches/2000-q1/msg00527.html | |
568 | ||
569 | -- | |
570 | ||
571 | [Comming...] | |
572 | ||
573 | Modify gdb to work correctly with Pascal. | |
574 | ||
575 | -- | |
576 | ||
577 | Re: Various C++ things | |
578 | ||
26099b4a AC |
579 | value_headof/value_from_vtable_info are worthless, and should be |
580 | removed. The one place in printcmd.c that uses it should use the RTTI | |
581 | functions. | |
4afc966c | 582 | |
26099b4a AC |
583 | RTTI for g++ should be using the typeinfo functions rather than the |
584 | vtables. The typeinfo functions are always at offset 4 from the | |
585 | beginning of the vtable, and are always right. The vtables will have | |
586 | weird names like E::VB sometimes. The typeinfo function will always | |
587 | be "E type_info function", or somesuch. | |
4afc966c | 588 | |
26099b4a AC |
589 | value_virtual_fn_field needs to be fixed so there are no failures for |
590 | virtual functions for C++ using g++. | |
4afc966c | 591 | |
26099b4a AC |
592 | Testsuite cases are the major priority right now for C++ support, |
593 | since i have to make a lot of changes that could potentially break | |
594 | each other. | |
7ae38352 AC |
595 | |
596 | -- | |
597 | ||
4afc966c | 598 | Add support for Modula3 |
7ae38352 | 599 | |
4afc966c | 600 | Get DEC/Compaq to contribute their Modula-3 support. |
7ae38352 AC |
601 | |
602 | -- | |
603 | ||
4afc966c AC |
604 | Remote Protocol Support |
605 | ======================= | |
7ae38352 AC |
606 | |
607 | -- | |
608 | ||
4afc966c | 609 | set/show remote X-packet ... |
7ae38352 | 610 | |
4afc966c AC |
611 | ``(gdb) help set remote X-packet'' doesn't list the applicable |
612 | responses. The help message needs to be expanded. | |
7ae38352 AC |
613 | |
614 | -- | |
615 | ||
616 | Remote protocol doco feedback. | |
617 | ||
618 | Too much feedback to mention needs to be merged in (901660). Search | |
619 | for the word ``remote''. | |
620 | ||
4afc966c AC |
621 | |
622 | http://sourceware.cygnus.com/ml/gdb/2000-q1/msg00023.html | |
623 | http://sourceware.cygnus.com/ml/gdb/2000-q1/msg00056.html | |
624 | http://sourceware.cygnus.com/ml/gdb/2000-q1/msg00382.html | |
625 | ||
7ae38352 AC |
626 | -- |
627 | ||
4afc966c | 628 | GDB doesn't recover gracefully from remote protocol errors. |
7ae38352 | 629 | |
4afc966c AC |
630 | GDB wasn't checking for NAKs from the remote target. Instead a NAK is |
631 | ignored and a timeout is required before GDB retries. A pre-cursor to | |
632 | fixing this this is making GDB's remote protocol packet more robust. | |
633 | ||
634 | While downloading to a remote protocol target, gdb ignores packet | |
635 | errors in so far as it will continue to edownload with chunk N+1 even | |
636 | if chunk N was not correctly sent. This causes gdb.base/remote.exp to | |
637 | take a painfully long time to run. As a PS that test needs to be | |
638 | fixed so that it builds on 16 bit machines. | |
7ae38352 AC |
639 | |
640 | -- | |
641 | ||
4afc966c | 642 | Add the cycle step command. |
7ae38352 | 643 | |
4afc966c | 644 | http://sourceware.cygnus.com/ml/gdb/2000-q1/msg00237.html |
7ae38352 | 645 | |
26099b4a AC |
646 | -- |
647 | ||
648 | Resolve how to scale things to support very large packets. | |
649 | ||
650 | -- | |
651 | ||
652 | Resolve how to handle a target that changes things like its endianess | |
653 | on the fly - should it be returned in the ``T'' packet? | |
654 | ||
655 | Underlying problem is that the register file is target endian. If the | |
656 | target endianess changes gdb doesn't know. | |
657 | ||
7ae38352 AC |
658 | -- |
659 | ||
4afc966c AC |
660 | Symbol Support |
661 | ============== | |
7ae38352 | 662 | |
4afc966c AC |
663 | If / when GDB starts to support the debugging of multi-processor |
664 | (rather than multi-thread) applications the symtab code will need to | |
665 | be updated a little so that several independant symbol tables are | |
666 | active at a given time. | |
667 | ||
668 | The other interesting change is a clarification of the exact meaning | |
669 | of CORE_ADDR and that has had consequences for a few targets (that | |
670 | were abusing that data type). | |
7ae38352 | 671 | |
d8038014 AC |
672 | -- |
673 | ||
4afc966c | 674 | Investiagate ways of reducing memory. |
d8038014 AC |
675 | |
676 | -- | |
677 | ||
4afc966c | 678 | Investigate ways of improving load time. |
d8038014 | 679 | |
4afc966c AC |
680 | -- |
681 | ||
682 | Get the d10v to use POINTER_TO_ADDRESS and ADDRESS_TO_POINTER. | |
683 | ||
684 | Consequence of recent symtab clarification. No marks for figuring out | |
685 | who maintains the d10v. | |
d8038014 | 686 | |
0aaf65d7 AC |
687 | -- |
688 | ||
4afc966c AC |
689 | Get the MIPS to correctly sign extend all address <-> pointer |
690 | conversions. | |
0aaf65d7 | 691 | |
4afc966c AC |
692 | Consequence of recent symtab clarification. No marks for figuring out |
693 | who maintains the MIPS. | |
0aaf65d7 | 694 | |
26099b4a AC |
695 | -- |
696 | ||
697 | Testsuite Support | |
698 | ================= | |
699 | ||
700 | There are never to many testcases. | |
701 | ||
702 | -- | |
703 | ||
704 | Better thread testsuite. | |
705 | ||
706 | -- | |
707 | ||
708 | Better C++ testsuite. | |
709 | ||
710 | -- | |
711 | ||
712 | Look at adding a GDB specific testsuite directory so that white box | |
713 | tests of key internals can be added (eg ui_file). | |
714 | ||
715 | -- | |
716 | ||
717 | Separate out tests that involve the floating point (FP). | |
718 | ||
719 | (Something for people brining up new targets). FP and non-fp tests | |
720 | are combined. I think there should be set of basic tests that | |
721 | exercise pure integer support and then a more expanded set that | |
722 | exercise FP and FP/integer interactions. | |
723 | ||
724 | As an example, the MIPS, for n32 as problems with passing FP's and | |
725 | structs. Since most inferior call tests include FP it is difficult to | |
726 | determine of the integer tests are ok. | |
727 | ||
7ae38352 AC |
728 | -- |
729 | ||
4afc966c AC |
730 | Architectural Changes: General |
731 | ============================== | |
7ae38352 AC |
732 | |
733 | These are harder than simple cleanups / fixes and, consequently | |
734 | involve more work. Typically an Architectural Change will be broken | |
735 | down into a more digestible set of cleanups and fixes. | |
736 | ||
737 | -- | |
738 | ||
4afc966c AC |
739 | Cleanup software single step. |
740 | ||
741 | At present many targets implement software single step by directly | |
742 | blatting memory (see rs6000-tdep.c). Those targets should register | |
743 | the applicable breakpoints using the breakpoint framework. Perhaphs a | |
744 | new internal breakpoint class ``step'' is needed. | |
745 | ||
746 | -- | |
747 | ||
7ae38352 AC |
748 | Replace READ_FP() with FRAME_HANDLE(). |
749 | ||
750 | READ_FP() is a hangover from the days of the vax when the ABI really | |
751 | did have a frame pointer register. Modern architectures typically | |
752 | construct a virtual frame-handle from the stack pointer and various | |
753 | other bits of string. | |
754 | ||
755 | Unfortunatly GDB still treats this synthetic FP register as though it | |
756 | is real. That in turn really confuses users (arm and ``print $fp'' VS | |
757 | ``info registers fp''). The synthetic FP should be separated out of | |
758 | the true register set presented to the user. | |
759 | ||
760 | -- | |
761 | ||
2a00c9ce AC |
762 | Register Cache Cleanup (below from Andrew Cagney) |
763 | ||
764 | I would depict the current register architecture as something like: | |
765 | ||
766 | High GDB --> Low GDB | |
767 | | | | |
768 | \|/ \|/ | |
769 | --- REG NR ----- | |
770 | | | |
771 | register + REGISTER_BYTE(reg_nr) | |
772 | | | |
773 | \|/ | |
774 | ------------------------- | |
775 | | extern register[] | | |
776 | ------------------------- | |
777 | ||
778 | where neither the high (valops.c et.al.) or low gdb (*-tdep.c) are | |
779 | really clear on what mechanisms they should be using to manipulate that | |
780 | buffer. Further, much code assumes, dangerously, that registers are | |
781 | contigious. Having got mips-tdep.c to support multiple ABIs, believe | |
782 | me, that is a bad assumption. Finally, that register cache layout is | |
783 | determined by the current remote/local target and _not_ the less | |
784 | specific target ISA. In fact, in many cases it is determined by the | |
785 | somewhat arbitrary layout of the [gG] packets! | |
786 | ||
787 | ||
788 | How I would like the register file to work is more like: | |
789 | ||
790 | ||
791 | High GDB | |
792 | | | |
793 | \|/ | |
794 | pseudo reg-nr | |
795 | | | |
796 | map pseudo <-> | |
797 | random cache | |
798 | bytes | |
799 | | | |
800 | \|/ | |
801 | ------------ | |
802 | | register | | |
803 | | cache | | |
804 | ------------ | |
805 | /|\ | |
806 | | | |
807 | map random cache | |
808 | bytes to target | |
809 | dependant i-face | |
810 | /|\ | |
811 | | | |
812 | target dependant | |
813 | such as [gG] packet | |
814 | or ptrace buffer | |
815 | ||
816 | The main objectives being: | |
817 | ||
818 | o a clear separation between the low | |
819 | level target and the high level GDB | |
820 | ||
821 | o a mechanism that solves the general | |
822 | problem of register aliases, overlaps | |
823 | etc instead of treating them as optional | |
824 | extras that can be wedged in as an after | |
825 | thought (that is a reasonable description | |
826 | of the current code). | |
827 | ||
828 | Identify then solve the hard case and the | |
829 | rest just falls out. GDB solved the easy | |
830 | case and then tried to ignore the real | |
831 | world :-) | |
832 | ||
833 | o a removal of the assumption that the | |
834 | mapping between the register cache | |
835 | and virtual registers is largely static. | |
836 | If you flip the USR/SSR stack register | |
837 | select bit in the status-register then | |
838 | the corresponding stack registers should | |
839 | reflect the change. | |
840 | ||
841 | o a mechanism that clearly separates the | |
842 | gdb internal register cache from any | |
843 | target (not architecture) dependant | |
844 | specifics such as [gG] packets. | |
845 | ||
846 | Of course, like anything, it sounds good in theory. In reality, it | |
847 | would have to contend with many<->many relationships at both the | |
848 | virt<->cache and cache<->target level. For instance: | |
849 | ||
850 | virt<->cache | |
851 | Modifying an mmx register may involve | |
852 | scattering values across both FP and | |
853 | mmpx specific parts of a buffer | |
854 | ||
855 | cache<->target | |
856 | When writing back a SP it may need to | |
857 | both be written to both SP and USP. | |
858 | ||
859 | ||
860 | Hmm, | |
861 | ||
862 | Rather than let this like the last time it was discussed, just slip, I'm | |
863 | first going to add this e-mail (+ references) to TODO. I'd then like to | |
864 | sketch out a broad strategy I think could get us there. | |
865 | ||
866 | ||
867 | First thing I'd suggest is separating out the ``extern registers[]'' | |
868 | code so that we can at least identify what is using it. At present | |
869 | things are scattered across many files. That way we can at least | |
870 | pretend that there is a cache instead of a global array :-) | |
871 | ||
872 | I'd then suggest someone putting up a proposal for the pseudo-reg / | |
873 | high-level side interface so that code can be adopted to it. For old | |
874 | code, initially a blanket rename of write_register_bytes() to | |
875 | deprecated_write_register_bytes() would help. | |
876 | ||
877 | Following that would, finaly be the corresponding changes to the target. | |
bc9e5bbf AC |
878 | |
879 | -- | |
880 | ||
67edb2c6 AC |
881 | Check that GDB can handle all BFD architectures (Andrew Cagney) |
882 | ||
883 | There should be a test that checks that BFD/GDB are in sync with | |
884 | regard to architecture changes. Something like a test that first | |
885 | queries GDB for all supported architectures and then feeds each back | |
886 | to GDB.. Anyone interested in learning how to write tests? :-) | |
887 | ||
888 | -- | |
889 | ||
4afc966c AC |
890 | Architectural Change: Multi-arch et al. |
891 | ======================================= | |
2a00c9ce | 892 | |
4afc966c AC |
893 | The long term objective is to remove all assumptions that there is a |
894 | single target with a single address space with a single instruction | |
895 | set architecture and single application binary interface. | |
2a00c9ce | 896 | |
4afc966c AC |
897 | This is an ongoing effort. The first milestone is to enable |
898 | ``multi-arch'' where by all architectural decisions are made at | |
899 | runtime. | |
7ae38352 | 900 | |
4afc966c AC |
901 | It should be noted that ``gdbarch'' is really ``gdbabi'' and |
902 | ``gdbisa''. Once things are multi-arched breaking that down correctly | |
903 | will become much easier. | |
7ae38352 AC |
904 | |
905 | -- | |
906 | ||
4afc966c | 907 | GDBARCH cleanup (Andrew Cagney) |
7ae38352 | 908 | |
4afc966c AC |
909 | The non-generated parts of gdbarch.{sh,h,c} should be separated out |
910 | into arch-utils.[hc]. | |
911 | ||
912 | Document that gdbarch_init_ftype could easily fail because it didn't | |
913 | identify an architecture. | |
ed952ac5 AC |
914 | |
915 | -- | |
916 | ||
4afc966c | 917 | Fix BELIEVE_PPC_PROMOTION. Change it to BELIEVE_PPC_PROMOTION_P? |
ed952ac5 | 918 | |
4afc966c AC |
919 | At present there is still #ifdef BELIEVE_PPC_PROMOTION code in the |
920 | symtab file. | |
ed952ac5 | 921 | |
4afc966c AC |
922 | -- |
923 | ||
8e6a3c35 AC |
924 | Fix target_signal_from_host() etc. |
925 | ||
926 | The name is wrong for starters. ``target_signal'' should probably be | |
927 | ``gdb_signal''. ``from_host'' should be ``from_target_signal''. | |
928 | After that it needs to be multi-arched and made independant of any | |
929 | host signal numbering. | |
930 | ||
931 | -- | |
932 | ||
4afc966c AC |
933 | Update ALPHA so that it uses ``struct frame_extra_info'' instead of |
934 | EXTRA_FRAME_INFO. | |
935 | ||
936 | This is a barrier to replacing mips_extra_func_info with something | |
937 | that works with multi-arch. | |
7ae38352 AC |
938 | |
939 | -- | |
940 | ||
4afc966c AC |
941 | Multi-arch mips_extra_func_info. |
942 | ||
943 | This first needs the alpha to be updated so that it uses ``struct | |
944 | frame_extra_info''. | |
7ae38352 AC |
945 | |
946 | -- | |
947 | ||
4afc966c | 948 | Rationalize TARGET_SINGLE_FORMAT and TARGET_SINGLE_BIT et al. |
7ae38352 | 949 | |
4afc966c | 950 | Surely one of them is redundant. |
7ae38352 AC |
951 | |
952 | -- | |
953 | ||
4afc966c | 954 | Convert ALL architectures to MULTI-ARCH. |
7ae38352 AC |
955 | |
956 | -- | |
957 | ||
958 | Select the initial multi-arch ISA / ABI based on --target or similar. | |
959 | ||
960 | At present the default is based on what ever is first in the BFD | |
961 | archures table. It should be determined based on the ``--target=...'' | |
962 | name. | |
963 | ||
964 | -- | |
965 | ||
bf64bfd6 AC |
966 | Make MIPS pure multi-arch. |
967 | ||
968 | It is only at the multi-arch enabled stage. | |
969 | ||
970 | -- | |
971 | ||
7ae38352 AC |
972 | Truly multi-arch. |
973 | ||
974 | Enable the code to recognize --enable-targets=.... like BINUTILS does. | |
975 | ||
4afc966c AC |
976 | Can the tm.h and nm.h files be eliminated by multi-arch. |
977 | ||
7ae38352 AC |
978 | -- |
979 | ||
4afc966c AC |
980 | Architectural Change: MI, LIBGDB and scripting languages |
981 | ======================================================== | |
7ae38352 | 982 | |
4afc966c AC |
983 | See also architectural changes related to the event loop. LIBGDB |
984 | can't be finished until there is a generic event loop being used by | |
985 | all targets. | |
986 | ||
987 | The long term objective is it to be possible to integrate GDB into | |
988 | scripting languages. | |
7ae38352 AC |
989 | |
990 | -- | |
991 | ||
4afc966c | 992 | Implement generic ``(gdb) commmand > file'' |
7ae38352 | 993 | |
4afc966c AC |
994 | Once everything is going through ui_file it should be come fairly |
995 | easy. | |
996 | ||
997 | http://sourceware.cygnus.com/ml/gdb/2000-04/msg00104.html | |
998 | ||
999 | -- | |
1000 | ||
1001 | Replace gdb_stdtarg with gdb_targout (and possibly gdb_targerr). | |
1002 | ||
1003 | gdb_stdtarg is easily confused with gdb_stdarg. | |
1004 | ||
1005 | -- | |
1006 | ||
1007 | Extra ui_file methods - dump. | |
1008 | ||
26099b4a | 1009 | Very useful for whitebox testing. |
4afc966c AC |
1010 | |
1011 | -- | |
1012 | ||
1013 | Eliminate error_begin(). | |
1014 | ||
1015 | With ui_file, there is no need for the statefull error_begin () | |
1016 | function. | |
1017 | ||
1018 | -- | |
1019 | ||
1020 | Send normal output to gdb_stdout. | |
1021 | Send error messages to gdb_stderror. | |
1022 | Send debug and log output log gdb_stdlog. | |
1023 | ||
1024 | GDB still contains many cases where (f)printf or printf_filtered () is | |
1025 | used when it should be sending the messages to gdb_stderror or | |
1026 | gdb_stdlog. The thought of #defining printf to something has crossed | |
1027 | peoples minds ;-) | |
7ae38352 AC |
1028 | |
1029 | -- | |
1030 | ||
1031 | Re-do GDB's output pager. | |
1032 | ||
1033 | GDB's output pager still relies on people correctly using *_filtered | |
1034 | for gdb_stdout and *_unfiltered for gdb_stdlog / gdb_stderr. | |
1035 | Hopefully, with all normal output going to gdb_stdout, the pager can | |
1036 | just look at the ui_file that the output is on and then use that to | |
1037 | decide what to do about paging. Sounds good in theory. | |
1038 | ||
1039 | -- | |
1040 | ||
4afc966c AC |
1041 | Check/cleanup MI documentation. |
1042 | ||
1043 | The list of commands specified in the documentation needs to be | |
1044 | checked against the mi-cmds.c table in a mechanical way (so that they | |
1045 | two can be kept up-to-date). | |
1046 | ||
1047 | -- | |
1048 | ||
1049 | Convert MI into libgdb | |
1050 | ||
1051 | MI provides a text interface into what should be many of the libgdb | |
1052 | functions. The implementation of those functions should be separated | |
1053 | into the MI interface and the functions proper. Those functions being | |
1054 | moved to gdb/lib say. | |
1055 | ||
1056 | -- | |
1057 | ||
1058 | Create libgdb.h | |
1059 | ||
1060 | The first part can already be found in defs.h. | |
1061 | ||
1062 | -- | |
1063 | ||
1064 | MI's input does not use buffering. | |
1065 | ||
1066 | At present the MI interface reads raw characters of from an unbuffered | |
1067 | FD. This is to avoid several nasty buffer/race conditions. That code | |
1068 | should be changed so that it registers its self with the event loop | |
1069 | (on the input FD) and then push commands up to MI as they arrive. | |
1070 | ||
1071 | The serial code already does this. | |
1072 | ||
1073 | -- | |
1074 | ||
1075 | Make MI interface accessable from existing CLI. | |
1076 | ||
1077 | -- | |
1078 | ||
1079 | Add a breakpoint-edit command to MI. | |
1080 | ||
1081 | It would be similar to MI's breakpoint create but would apply to an | |
1082 | existing breakpoint. It saves the need to delete/create breakpoints | |
1083 | when ever they are changed. | |
1084 | ||
1085 | -- | |
1086 | ||
1087 | Add directory path to MI breakpoint. | |
1088 | ||
1089 | That way the GUI's task of finding the file within which the | |
1090 | breakpoint was set is simplified. | |
1091 | ||
1092 | -- | |
1093 | ||
1094 | Add a mechanism to reject certain expression classes to MI | |
7ae38352 AC |
1095 | |
1096 | There are situtations where you don't want GDB's expression | |
1097 | parser/evaluator to perform inferior function calls or variable | |
4afc966c AC |
1098 | assignments. A way of restricting the expression parser so that such |
1099 | operations are not accepted would be very helpful. | |
7ae38352 AC |
1100 | |
1101 | -- | |
1102 | ||
1103 | Remove sideffects from libgdb breakpoint create function. | |
1104 | ||
1105 | The user can use the CLI to create a breakpoint with partial | |
1106 | information - no file (gdb would use the file from the last | |
1107 | breakpoint). | |
1108 | ||
1109 | The libgdb interface currently affects that environment which can lead | |
1110 | to confusion when a user is setting breakpoints via both the MI and | |
1111 | the CLI. | |
1112 | ||
1113 | This is also a good example of how getting the CLI ``right'' will be | |
1114 | hard. | |
1115 | ||
1116 | -- | |
1117 | ||
4afc966c | 1118 | Move gdb_lasterr to ui_out? |
7ae38352 | 1119 | |
4afc966c AC |
1120 | The way GDB throws errors and records them needs a re-think. ui_out |
1121 | handles the correct output well. It doesn't resolve what to do with | |
1122 | output / error-messages when things go wrong. | |
7ae38352 | 1123 | |
97c3646f AC |
1124 | -- |
1125 | ||
1126 | do_setshow_command contains a 1024 byte buffer. | |
1127 | ||
1128 | The function assumes that there will never be any more than 1024 bytes | |
1129 | of enum. It should use mem_file. | |
1130 | ||
1131 | -- | |
1132 | ||
1133 | Should struct cmd_list_element . completer take the command as an | |
1134 | argument? | |
1135 | ||
1136 | -- | |
1137 | ||
1138 | Should the bulk of top.c:line_completion_function() be moved to | |
1139 | command.[hc]? complete_on_cmdlist() and complete_on_enums() could | |
1140 | then be made private. | |
1141 | ||
1142 | -- | |
1143 | ||
1144 | top.c (execute_command): Should a command being valid when the target | |
1145 | is running be made an attribute (predicate) to the command rather than | |
1146 | an explicit set of tests. | |
1147 | ||
1148 | -- | |
1149 | ||
1150 | top.c (execute_command): Should the bulk of this function be moved | |
1151 | into command.[hc] so that top.c doesn't grub around in the command | |
1152 | internals? | |
1153 | ||
4afc966c AC |
1154 | -- |
1155 | ||
1156 | Architectural Change: Async | |
1157 | =========================== | |
1158 | ||
1159 | While GDB uses an event loop when prompting the user for input. That | |
1160 | event loop is not exploited by targets when they allow the target | |
1161 | program to continue. Typically targets still block in (target_wait()) | |
1162 | until the program again halts. | |
1163 | ||
1164 | The closest a target comes to supporting full asynchronous mode are | |
1165 | the remote targets ``async'' and ``extended-async''. | |
7ae38352 AC |
1166 | |
1167 | -- | |
1168 | ||
4afc966c | 1169 | Asynchronous expression evaluator |
7ae38352 | 1170 | |
4afc966c | 1171 | Inferior function calls hang GDB. |
7ae38352 AC |
1172 | |
1173 | -- | |
1174 | ||
1175 | Fix implementation of ``target xxx''. | |
1176 | ||
1177 | At present when the user specifies ``target xxxx'', the CLI maps that | |
1178 | directly onto a target open method. It is then assumed that the | |
1179 | target open method should do all sorts of complicated things as this | |
1180 | is the only chance it has. Check how the various remote targets | |
1181 | duplicate the target operations. Check also how the various targets | |
1182 | behave differently for purely arbitrary reasons. | |
1183 | ||
1184 | What should happen is that ``target xxxx'' should call a generic | |
1185 | ``target'' function and that should then co-ordinate the opening of | |
1186 | ``xxxx''. This becomes especially important when you're trying to | |
1187 | open an asynchronous target that may need to perform background tasks | |
1188 | as part of the ``attach'' phase. | |
1189 | ||
1190 | Unfortunatly, due to limitations in the old/creaking command.h | |
1191 | interface, that isn't possible. The function being called isn't told | |
1192 | of the ``xxx'' or any other context information. | |
1193 | ||
1194 | Consequently a precursor to fixing ``target xxxx'' is to clean up the | |
1195 | CLI code so that it passes to the callback function (attatched to a | |
1196 | command) useful information such as the actual command and a context | |
1197 | for that command. Other changes such as making ``struct command'' | |
1198 | opaque may also help. | |
1199 | ||
53904c9e AC |
1200 | See also: |
1201 | http://sourceware.cygnus.com/ml/gdb-patches/2000-06/msg00062.html | |
1202 | ||
7ae38352 AC |
1203 | -- |
1204 | ||
4afc966c AC |
1205 | Make "target xxx" command interruptible. |
1206 | ||
1207 | As things become async this becomes possible. A target would start | |
1208 | the connect and then return control to the event loop. A cntrl-c | |
1209 | would notify the target that the operation is to be abandoned and the | |
1210 | target code could respond. | |
7ae38352 AC |
1211 | |
1212 | -- | |
1213 | ||
4afc966c AC |
1214 | Add a "suspend" subcommand of the "continue" command to suspend gdb |
1215 | while continuing execution of the subprocess. Useful when you are | |
1216 | debugging servers and you want to dodge out and initiate a connection | |
1217 | to a server running under gdb. | |
1218 | ||
1219 | [hey async!!] | |
7ae38352 | 1220 | |
2a00c9ce AC |
1221 | -- |
1222 | ||
26099b4a AC |
1223 | TODO FAQ |
1224 | ======== | |
1225 | ||
1226 | Frequently requested but not approved requests. | |
1227 | ||
1228 | -- | |
1229 | ||
1230 | Eliminate unused argument warnings using ATTRIBUTE_UNUSED. | |
1231 | ||
1232 | The benefits on this one are thought to be marginal - GDBs design | |
1233 | means that unused parameters are very common. GCC 3.0 will also | |
1234 | include the option -Wno-unused-parameter which means that ``-Wall | |
1235 | -Wno-unused-parameters -Werror'' can be specified. | |
1236 | ||
1237 | -- | |
1238 | ||
1239 | ||
1240 | ||
2a00c9ce AC |
1241 | Legacy Wish List |
1242 | ================ | |
1243 | ||
1244 | This list is not up to date, and opinions vary about the importance or | |
1245 | even desirability of some of the items. If you do fix something, it | |
1246 | always pays to check the below. | |
1247 | ||
1248 | -- | |
c906108c | 1249 | |
b83266a0 SS |
1250 | @c This does not work (yet if ever). FIXME. |
1251 | @c @item --parse=@var{lang} @dots{} | |
1252 | @c Configure the @value{GDBN} expression parser to parse the listed languages. | |
1253 | @c @samp{all} configures @value{GDBN} for all supported languages. To get a | |
1254 | @c list of all supported languages, omit the argument. Without this | |
1255 | @c option, @value{GDBN} is configured to parse all supported languages. | |
1256 | ||
7ae38352 | 1257 | -- |
c906108c SS |
1258 | |
1259 | START_INFERIOR_TRAPS_EXPECTED need never be defined to 2, since that | |
1260 | is its default value. Clean this up. | |
1261 | ||
7ae38352 AC |
1262 | -- |
1263 | ||
c906108c SS |
1264 | It should be possible to use symbols from shared libraries before we know |
1265 | exactly where the libraries will be loaded. E.g. "b perror" before running | |
1266 | the program. This could maybe be done as an extension of the "breakpoint | |
1267 | re-evaluation" after new symbols are loaded. | |
1268 | ||
7ae38352 AC |
1269 | -- |
1270 | ||
c906108c SS |
1271 | Make single_step() insert and remove breakpoints in one operation. |
1272 | ||
26099b4a AC |
1273 | [If this is talking about having single_step() insert the breakpoints, |
1274 | run the target then pull the breakpoints then it is wrong. The | |
1275 | function has to return as control has to eventually be passed back to | |
1276 | the main event loop.] | |
1277 | ||
7ae38352 AC |
1278 | -- |
1279 | ||
c906108c SS |
1280 | Speed up single stepping by avoiding extraneous ptrace calls. |
1281 | ||
7ae38352 AC |
1282 | -- |
1283 | ||
c906108c SS |
1284 | Speed up single stepping by not inserting and removing breakpoints |
1285 | each time the inferior starts and stops. | |
1286 | ||
1287 | Breakpoints should not be inserted and deleted all the time. Only the | |
1288 | one(s) there should be removed when we have to step over one. Support | |
1289 | breakpoints that don't have to be removed to step over them. | |
1290 | ||
7ae38352 | 1291 | [this has resulted in numerous debates. The issue isn't clear cut] |
c906108c | 1292 | |
7ae38352 | 1293 | -- |
c906108c SS |
1294 | |
1295 | Provide "voodoo" debugging of core files. This creates a zombie | |
1296 | process as a child of the debugger, and loads it up with the data, | |
1297 | stack, and regs of the core file. This allows you to call functions | |
1298 | in the executable, to manipulate the data in the core file. | |
1299 | ||
7ae38352 | 1300 | [you wish] |
c906108c | 1301 | |
7ae38352 | 1302 | -- |
c906108c | 1303 | |
7ae38352 | 1304 | GDB reopens the source file on every line, as you "next" through it. |
c906108c | 1305 | |
7ae38352 | 1306 | [still true? I've a memory of this being fixed] |
c906108c | 1307 | |
7ae38352 | 1308 | -- |
c906108c SS |
1309 | |
1310 | Perhaps "i source" should take an argument like that of "list". | |
1311 | ||
7ae38352 | 1312 | -- |
c906108c SS |
1313 | |
1314 | Remove "at 0xnnnn" from the "b foo" response, if `print address off' and if | |
1315 | it matches the source line indicated. | |
1316 | ||
7ae38352 | 1317 | -- |
c906108c | 1318 | |
7ae38352 | 1319 | The prompt at end of screen should accept space as well as CR. |
c906108c | 1320 | |
7ae38352 | 1321 | -- |
c906108c SS |
1322 | |
1323 | Backtrace should point out what the currently selected frame is, in | |
1324 | its display, perhaps showing "@3 foo (bar, ...)" or ">3 foo (bar, | |
1325 | ...)" rather than "#3 foo (bar, ...)". | |
1326 | ||
7ae38352 AC |
1327 | -- |
1328 | ||
c906108c SS |
1329 | "i program" should work for core files, and display more info, like what |
1330 | actually caused it to die. | |
1331 | ||
7ae38352 AC |
1332 | -- |
1333 | ||
c906108c SS |
1334 | "x/10i" should shorten the long name, if any, on subsequent lines. |
1335 | ||
7ae38352 | 1336 | -- |
c906108c SS |
1337 | |
1338 | "next" over a function that longjumps, never stops until next time you happen | |
1339 | to get to that spot by accident. E.g. "n" over execute_command which has | |
1340 | an error. | |
1341 | ||
7ae38352 AC |
1342 | -- |
1343 | ||
c906108c SS |
1344 | "set zeroprint off", don't bother printing members of structs which |
1345 | are entirely zero. Useful for those big structs with few useful | |
1346 | members. | |
1347 | ||
7ae38352 AC |
1348 | -- |
1349 | ||
c906108c SS |
1350 | GDB does four ioctl's for every command, probably switching terminal modes |
1351 | to/from inferior or for readline or something. | |
1352 | ||
7ae38352 AC |
1353 | -- |
1354 | ||
c906108c SS |
1355 | terminal_ours versus terminal_inferior: cache state. Switch should be a noop |
1356 | if the state is the same, too. | |
1357 | ||
7ae38352 | 1358 | -- |
c906108c SS |
1359 | |
1360 | "i frame" shows wrong "arglist at" location, doesn't show where the args | |
1361 | should be found, only their actual values. | |
1362 | ||
7ae38352 AC |
1363 | -- |
1364 | ||
c906108c SS |
1365 | There should be a way for "set" commands to validate the new setting |
1366 | before it takes effect. | |
1367 | ||
7ae38352 | 1368 | -- |
c906108c SS |
1369 | |
1370 | "ena d" is ambiguous, why? "ena delete" seems to think it is a command! | |
1371 | ||
7ae38352 | 1372 | -- |
c906108c SS |
1373 | |
1374 | i line VAR produces "Line number not known for symbol ``var''.". I | |
1375 | thought we were stashing that info now! | |
1376 | ||
7ae38352 AC |
1377 | -- |
1378 | ||
c906108c SS |
1379 | We should be able to write to random files at hex offsets like adb. |
1380 | ||
7ae38352 AC |
1381 | -- |
1382 | ||
7ae38352 AC |
1383 | [elena - delete this] |
1384 | ||
c906108c SS |
1385 | Handle add_file with separate text, data, and bss addresses. Maybe |
1386 | handle separate addresses for each segment in the object file? | |
1387 | ||
7ae38352 AC |
1388 | -- |
1389 | ||
1390 | [Jimb/Elena delete this one] | |
1391 | ||
c906108c SS |
1392 | Handle free_named_symtab to cope with multiply-loaded object files |
1393 | in a dynamic linking environment. Should remember the last copy loaded, | |
1394 | but not get too snowed if it finds references to the older copy. | |
1395 | ||
7ae38352 AC |
1396 | -- |
1397 | ||
1398 | [elena delete this also] | |
c906108c SS |
1399 | |
1400 | Remove all references to: | |
1401 | text_offset | |
1402 | data_offset | |
1403 | text_data_start | |
1404 | text_end | |
1405 | exec_data_offset | |
1406 | ... | |
1407 | now that we have BFD. All remaining are in machine dependent files. | |
1408 | ||
7ae38352 | 1409 | -- |
c906108c SS |
1410 | |
1411 | Re-organize help categories into things that tend to fit on a screen | |
1412 | and hang together. | |
1413 | ||
7ae38352 | 1414 | -- |
c906108c SS |
1415 | |
1416 | Add in commands like ADB's for searching for patterns, etc. We should | |
1417 | be able to examine and patch raw unsymboled binaries as well in gdb as | |
1418 | we can in adb. (E.g. increase the timeout in /bin/login without source). | |
1419 | ||
7ae38352 AC |
1420 | [actually, add ADB interface :-] |
1421 | ||
1422 | -- | |
c906108c SS |
1423 | |
1424 | When doing "step" or "next", if a few lines of source are skipped between | |
1425 | the previous line and the current one, print those lines, not just the | |
1426 | last line of a multiline statement. | |
1427 | ||
7ae38352 | 1428 | -- |
c906108c SS |
1429 | |
1430 | Handling of "&" address-of operator needs some serious overhaul | |
1431 | for ANSI C and consistency on arrays and functions. | |
1432 | For "float point[15];": | |
1433 | ptype &point[4] ==> Attempt to take address of non-lvalue. | |
1434 | For "char *malloc();": | |
1435 | ptype malloc ==> "char *()"; should be same as | |
1436 | ptype &malloc ==> "char *(*)()" | |
1437 | call printf ("%x\n", malloc) ==> weird value, should be same as | |
1438 | call printf ("%x\n", &malloc) ==> correct value | |
1439 | ||
7ae38352 AC |
1440 | -- |
1441 | ||
c906108c SS |
1442 | Fix dbxread.c symbol reading in the presence of interrupts. It |
1443 | currently leaves a cleanup to blow away the entire symbol table when a | |
1444 | QUIT occurs. (What's wrong with that? -kingdon, 28 Oct 1993). | |
1445 | ||
7ae38352 AC |
1446 | [I suspect that the grype was that, on a slow system, you might want |
1447 | to cntrl-c and get just half the symbols and then load the rest later | |
1448 | - scary to be honest] | |
1449 | ||
1450 | -- | |
1451 | ||
c906108c SS |
1452 | Mipsread.c reads include files depth-first, because the dependencies |
1453 | in the psymtabs are way too inclusive (it seems to me). Figure out what | |
1454 | really depends on what, to avoid recursing 20 or 30 times while reading | |
1455 | real symtabs. | |
1456 | ||
7ae38352 AC |
1457 | -- |
1458 | ||
c906108c SS |
1459 | value_add() should be subtracting the lower bound of arrays, if known, |
1460 | and possibly checking against the upper bound for error reporting. | |
1461 | ||
7ae38352 | 1462 | -- |
c906108c SS |
1463 | |
1464 | When listing source lines, check for a preceding \n, to verify that | |
1465 | the file hasn't changed out from under us. | |
1466 | ||
7ae38352 AC |
1467 | [fixed by some other means I think. That hack wouldn't actually work |
1468 | reliably - the file might move such that another \n appears. ] | |
c906108c | 1469 | |
7ae38352 | 1470 | -- |
c906108c SS |
1471 | |
1472 | Get all the remote systems (where the protocol allows it) to be able to | |
1473 | stop the remote system when the GDB user types ^C (like remote.c | |
1474 | does). For ebmon, use ^Ak. | |
1475 | ||
7ae38352 AC |
1476 | -- |
1477 | ||
c906108c SS |
1478 | Possible feature: A version of the "disassemble" command which shows |
1479 | both source and assembly code ("set symbol-filename on" is a partial | |
1480 | solution). | |
1481 | ||
7ae38352 AC |
1482 | [has this been done? It was certainly done for MI and GDBtk] |
1483 | ||
1484 | -- | |
1485 | ||
c906108c SS |
1486 | investigate "x/s 0" (right now stops early) (I think maybe GDB is |
1487 | using a 0 address for bad purposes internally). | |
1488 | ||
7ae38352 AC |
1489 | -- |
1490 | ||
c906108c SS |
1491 | Make "info path" and path_command work again (but independent of the |
1492 | environment either of gdb or that we'll pass to the inferior). | |
1493 | ||
7ae38352 AC |
1494 | -- |
1495 | ||
c906108c SS |
1496 | Make GDB understand the GCC feature for putting octal constants in |
1497 | enums. Make it so overflow on an enum constant does not error_type | |
1498 | the whole type. Allow arbitrarily large enums with type attributes. | |
1499 | Put all this stuff in the testsuite. | |
1500 | ||
7ae38352 AC |
1501 | -- |
1502 | ||
c906108c SS |
1503 | Make TYPE_CODE_ERROR with a non-zero TYPE_LENGTH more useful (print |
1504 | the value in hex; process type attributes). Add this to the | |
1505 | testsuite. This way future compilers can add new types and old | |
1506 | versions of GDB can do something halfway reasonable. | |
1507 | ||
7ae38352 | 1508 | -- |
c906108c SS |
1509 | |
1510 | Fix mdebugread.c:parse_type to do fundamental types right (see | |
1511 | rs6000_builtin_type in stabsread.c for what "right" is--the point is | |
1512 | that the debug format fixes the sizes of these things and it shouldn't | |
1513 | depend on stuff like TARGET_PTR_BIT and so on. For mdebug, there seem | |
1514 | to be separate bt* codes for 64 bit and 32 bit things, and GDB should | |
1515 | be aware of that). Also use a switch statement for clarity and speed. | |
1516 | ||
7ae38352 AC |
1517 | -- |
1518 | ||
c906108c SS |
1519 | Investigate adding symbols in target_load--some targets do, some |
1520 | don't. | |
1521 | ||
7ae38352 AC |
1522 | -- |
1523 | ||
c906108c SS |
1524 | Put dirname in psymtabs and change lookup*symtab to use dirname (so |
1525 | /foo/bar.c works whether compiled by cc /foo/bar.c, or cd /foo; cc | |
1526 | bar.c). | |
1527 | ||
7ae38352 AC |
1528 | -- |
1529 | ||
c906108c SS |
1530 | Merge xcoffread.c and coffread.c. Use breakpoint_re_set instead of |
1531 | fixup_breakpoints. | |
1532 | ||
7ae38352 | 1533 | -- |
c906108c SS |
1534 | |
1535 | Make a watchpoint which contains a function call an error (it is | |
1536 | broken now, making it work is probably not worth the effort). | |
1537 | ||
7ae38352 | 1538 | -- |
c906108c SS |
1539 | |
1540 | New test case based on weird.exp but in which type numbers are not | |
1541 | renumbered (thus multiply defining a type). This currently causes an | |
1542 | infinite loop on "p v_comb". | |
1543 | ||
7ae38352 | 1544 | -- |
c906108c | 1545 | |
7ae38352 | 1546 | [Hey! Hint Hint Delete Delete!!!] |
c906108c SS |
1547 | |
1548 | Fix 386 floating point so that floating point registers are real | |
1549 | registers (but code can deal at run-time if they are missing, like | |
1550 | mips and 68k). This would clean up "info float" and related stuff. | |
1551 | ||
7ae38352 | 1552 | -- |
c906108c SS |
1553 | |
1554 | gcc -g -c enummask.c then gdb enummask.o, then "p v". GDB complains | |
1555 | about not being able to access memory location 0. | |
1556 | ||
1557 | -------------------- enummask.c | |
1558 | enum mask | |
1559 | { | |
1560 | ANIMAL = 0, | |
1561 | VEGETABLE = 1, | |
1562 | MINERAL = 2, | |
1563 | BASIC_CATEGORY = 3, | |
1564 | ||
1565 | WHITE = 0, | |
1566 | BLUE = 4, | |
1567 | GREEN = 8, | |
1568 | BLACK = 0xc, | |
1569 | COLOR = 0xc, | |
1570 | ||
1571 | ALIVE = 0x10, | |
1572 | ||
1573 | LARGE = 0x20 | |
1574 | } v; | |
1575 | ||
7ae38352 AC |
1576 | -- |
1577 | ||
c906108c SS |
1578 | If try to modify value in file with "set write off" should give |
1579 | appropriate error not "cannot access memory at address 0x65e0". | |
1580 | ||
7ae38352 | 1581 | -- |
c906108c | 1582 | |
c906108c SS |
1583 | Allow core file without exec file on RS/6000. |
1584 | ||
7ae38352 AC |
1585 | -- |
1586 | ||
c906108c SS |
1587 | Make sure "shell" with no arguments works right on DOS. |
1588 | ||
7ae38352 AC |
1589 | -- |
1590 | ||
c906108c SS |
1591 | Make gdb.ini (as well as .gdbinit) be checked on all platforms, so |
1592 | the same directory can be NFS-mounted on unix or DOS, and work the | |
1593 | same way. | |
1594 | ||
7ae38352 AC |
1595 | -- |
1596 | ||
1597 | [Is this another delete???] | |
c906108c SS |
1598 | |
1599 | Get SECT_OFF_TEXT stuff out of objfile_relocate (might be needed to | |
1600 | get RS/6000 to work right, might not be immediately relevant). | |
1601 | ||
7ae38352 | 1602 | -- |
c906108c SS |
1603 | |
1604 | Work out some kind of way to allow running the inferior to be done as | |
1605 | a sub-execution of, eg. breakpoint command lists. Currently running | |
1606 | the inferior interupts any command list execution. This would require | |
1607 | some rewriting of wait_for_inferior & friends, and hence should | |
1608 | probably be done in concert with the above. | |
1609 | ||
7ae38352 AC |
1610 | -- |
1611 | ||
c906108c SS |
1612 | Add function arguments to gdb user defined functions. |
1613 | ||
7ae38352 AC |
1614 | -- |
1615 | ||
c906108c SS |
1616 | Add convenience variables that refer to exec file, symbol file, |
1617 | selected frame source file, selected frame function, selected frame | |
1618 | line number, etc. | |
1619 | ||
7ae38352 AC |
1620 | -- |
1621 | ||
c906108c SS |
1622 | Modify the handling of symbols grouped through BINCL/EINCL stabs to |
1623 | allocate a partial symtab for each BINCL/EINCL grouping. This will | |
1624 | seriously decrease the size of inter-psymtab dependencies and hence | |
1625 | lessen the amount that needs to be read in when a new source file is | |
1626 | accessed. | |
1627 | ||
7ae38352 | 1628 | -- |
c906108c | 1629 | |
c906108c SS |
1630 | Add a command for searching memory, a la adb. It specifies size, |
1631 | mask, value, start address. ADB searches until it finds it or hits | |
1632 | an error (or is interrupted). | |
1633 | ||
7ae38352 AC |
1634 | -- |
1635 | ||
b83266a0 SS |
1636 | Remove the range and type checking code and documentation, if not |
1637 | going to implement. | |
1638 | ||
c906108c SS |
1639 | # Local Variables: |
1640 | # mode: text | |
1641 | # End: |