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 | |
552054a8 AC |
7 | GDB 5.1 - Fixes |
8 | =============== | |
138f88c0 | 9 | |
bc9e5bbf | 10 | Below is a list of problems identified during the GDB 5.0 release |
552054a8 | 11 | cycle. People hope to have these problems fixed in 5.1. |
4fd99b5a | 12 | |
a50c34dc AC |
13 | -- 2001-03-08 |
14 | ||
15 | Update GDB's coding standard documentation. Known topics: | |
16 | ||
17 | o alloca/malloc et.al. | |
18 | ||
19 | o typedef and structs | |
20 | ||
21 | o ISO-C | |
22 | ||
23 | and most likely also: | |
24 | ||
25 | o include conventions | |
26 | ||
4fd99b5a AC |
27 | -- |
28 | ||
ee055267 AC |
29 | Obsolete ser-ocd.c. |
30 | ||
31 | -- | |
32 | ||
a50c34dc AC |
33 | Wow, three bug reports for the same problem in one day! We should |
34 | probably make fixing this a real priority :-). | |
138f88c0 | 35 | |
a50c34dc AC |
36 | Anyway, thanks for reporting. |
37 | ||
38 | The following patch will fix the problems with setting breakpoints in | |
39 | dynamically loaded objects: | |
40 | ||
41 | http://sourceware.cygnus.com/ml/gdb-patches/2000-05/msg00230.html | |
42 | ||
43 | This patch isn't checked in yet (ping Michael/JimB), but I hope this | |
44 | will be in the next GDB release. | |
45 | ||
46 | There should really be a test in the testsuite for this problem, since | |
47 | it keeps coming up :-(. Any volunteers? | |
48 | ||
49 | Mark | |
bc9e5bbf | 50 | |
138f88c0 AC |
51 | -- |
52 | ||
67edb2c6 AC |
53 | x86 linux GDB and SIGALRM (???) |
54 | http://sourceware.cygnus.com/ml/gdb/2000-q1/msg00803.html | |
55 | ||
37d4dc74 MK |
56 | This problem has been fixed, but a regression test still needs to be |
57 | added to the testsuite: | |
58 | http://sourceware.cygnus.com/ml/gdb-patches/2000-05/msg00309.html | |
67edb2c6 | 59 | |
bc9e5bbf | 60 | Mark |
67edb2c6 | 61 | |
a50c34dc | 62 | [The test has been submitted for approval - cagney] |
b2f4b24d | 63 | |
6bc37a96 AC |
64 | -- |
65 | ||
a50c34dc AC |
66 | RFD: infrun.c: No bpstat_stop_status call after proceed over break? |
67 | http://sourceware.cygnus.com/ml/gdb-patches/2000-q1/msg00665.html | |
6bc37a96 | 68 | |
a50c34dc AC |
69 | GDB misses watchpoint triggers after proceeding over a breakpoint on |
70 | x86 targets. | |
b2f4b24d | 71 | |
26099b4a AC |
72 | -- |
73 | ||
74 | GDB 5.0 doesn't work on Linux/SPARC | |
75 | ||
a50c34dc | 76 | There are two parts to this. |
552054a8 | 77 | |
a50c34dc | 78 | o GDB 5.0 doesn't work on GNU/Linux/SPARC32 |
552054a8 | 79 | |
a50c34dc AC |
80 | o GDB 5.0 doesn't work on the new target |
81 | GNU/Linux/SPARC64 | |
552054a8 | 82 | |
a50c34dc | 83 | GDB does build on both these targets. |
552054a8 | 84 | |
a50c34dc | 85 | The first problem is the one that should be fixed. |
4afc966c | 86 | |
552054a8 AC |
87 | -- |
88 | ||
89 | GDB 5.1 - New features | |
90 | ====================== | |
91 | ||
92 | The following new features should be included in 5.1. | |
93 | ||
94 | -- | |
95 | ||
96 | Enable MI by default. Old code can be deleted after 5.1 is out. | |
97 | ||
a50c34dc AC |
98 | Issues: |
99 | ||
100 | o syntax change where a list would | |
101 | look like: | |
102 | [ foo=a, foo=b, foo=c ] | |
103 | instead of | |
104 | { foo=a, foo=b, foo=c } | |
105 | ||
106 | o kill off the idea of a reverse | |
107 | query. | |
108 | ||
109 | o review test cases | |
110 | ||
111 | o enable it | |
112 | ||
552054a8 AC |
113 | -- |
114 | ||
115 | Pascal (Pierre Muller, David Taylor) | |
116 | ||
117 | Pierre Muller has contributed patches for adding Pascal Language | |
118 | support to GDB. | |
119 | ||
120 | 2 pascal language patches inserted in database | |
121 | http://sourceware.cygnus.com/ml/gdb/2000-q1/msg00521.html | |
122 | ||
123 | Indent -gnu ? | |
124 | http://sourceware.cygnus.com/ml/gdb/2000-q1/msg00496.html | |
125 | ||
a50c34dc AC |
126 | [I think this has been merged, need to confirm - cagney] |
127 | ||
552054a8 AC |
128 | -- |
129 | ||
130 | Java (Anthony Green, David Taylor) | |
131 | ||
132 | Anthony Green has a number of Java patches that did not make it into | |
133 | the 5.0 release. The first two are in cvs now, but the third needs | |
134 | some fixing up before it can go in. | |
135 | ||
136 | Patch: java tests | |
137 | http://sourceware.cygnus.com/ml/gdb-patches/2000-q1/msg00512.html | |
138 | ||
139 | Patch: java booleans | |
140 | http://sourceware.cygnus.com/ml/gdb-patches/2000-q1/msg00515.html | |
141 | ||
142 | Patch: handle N_MAIN stab | |
143 | http://sourceware.cygnus.com/ml/gdb-patches/2000-q1/msg00527.html | |
144 | ||
a50c34dc | 145 | -- 2001-03-08 |
552054a8 | 146 | |
a50c34dc | 147 | Add CRIS target. |
552054a8 | 148 | |
a50c34dc AC |
149 | A predicate to this is the multi-arching of SOFTWARE_SINGLE_STEP(). A |
150 | patch has been submitted. | |
552054a8 AC |
151 | |
152 | -- | |
153 | ||
154 | GDB 5.1 - Cleanups | |
155 | ================== | |
156 | ||
157 | The following code cleanups will hopefully be applied to GDB 5.1. | |
158 | ||
1a5cef06 | 159 | -- 2001-03-26 |
a50c34dc | 160 | |
0d35ddba AC |
161 | Resolve the build status of all broken targets as identified by the |
162 | MAINTAINERS file. | |
a50c34dc | 163 | |
0981ead9 AC |
164 | o arm-* vs NetBSD's lack of ``unix'' |
165 | o arm-* vs IRIX (see below) | |
166 | ||
552054a8 AC |
167 | -- |
168 | ||
78566ebe AC |
169 | Fix copyright notices. |
170 | ||
171 | Turns out that ``1998-2000'' isn't considered valid :-( | |
172 | ||
173 | http://sourceware.cygnus.com/ml/gdb-patches/2000-05/msg00467.html | |
174 | ||
1ba607ad AC |
175 | -- |
176 | ||
a50c34dc AC |
177 | GDB 5.1 - Known Problems |
178 | ======================== | |
eccbb20d AC |
179 | |
180 | -- | |
181 | ||
182 | z8k | |
183 | ||
184 | The z8k has suffered bit rot and is known to not build. The problem | |
185 | was occuring in the opcodes directory. | |
186 | ||
cfc046cf AC |
187 | -- |
188 | ||
1a5cef06 AC |
189 | m88k |
190 | ||
191 | The m88k has suffered bit rot and is known to not build. | |
192 | ||
193 | -- | |
194 | ||
cfc046cf AC |
195 | Solaris 8 x86 CURSES_H problem |
196 | http://sources.redhat.com/ml/gdb/2000-07/msg00038.html | |
197 | ||
198 | The original problem was worked around with: | |
199 | ||
200 | 2000-06-06 Michael Snyder <msnyder@cygnus.com> | |
201 | ||
202 | * configure.in: Enable autoconf to find curses.h on Solaris 2.8. | |
203 | * configure: Regenerate. | |
204 | ||
205 | When building both GDB and SID using the same source tree the problem | |
206 | will still occure. sid/component/configure.in mis-configures | |
207 | <curses.h> and leaves wrong information in the config cache. | |
208 | ||
552054a8 AC |
209 | -- |
210 | ||
211 | GDB 5.2 - Fixes | |
212 | =============== | |
213 | ||
214 | -- | |
215 | ||
a50c34dc AC |
216 | Thread support. Right now, as soon as a thread finishes and exits, |
217 | you're hosed. This problem is reported once a week or so. | |
552054a8 AC |
218 | |
219 | -- | |
220 | ||
221 | GDB 5.2 - New features | |
222 | ====================== | |
223 | ||
224 | -- | |
225 | ||
0db23c95 AC |
226 | GCC 3.0 ABI support (but hopefully sooner...). |
227 | ||
228 | -- | |
229 | ||
230 | Objective C/C++ support (but hopefully sooner...). | |
552054a8 AC |
231 | |
232 | -- | |
233 | ||
234 | GDB 5.2 - Cleanups | |
235 | ================== | |
236 | ||
237 | The following cleanups have been identified as part of GDB 5.2. | |
238 | ||
239 | -- | |
240 | ||
dafc8383 | 241 | Remove old code that does not use ui_out functions and all the related |
0db23c95 AC |
242 | "ifdef"s. This also allows the elimination of -DUI_OUT from |
243 | Makefile.in and configure.in. | |
dafc8383 FN |
244 | |
245 | -- | |
246 | ||
a50c34dc AC |
247 | Compiler warnings. |
248 | ||
ee055267 AC |
249 | Eliminate warnings for all targets on at least one host for one of the |
250 | -W flags. Flags up for debate include: -Wswitch -Wcomment -trigraphs | |
251 | -Wtrigraphs -Wunused-function -Wunused-label -Wunused-variable | |
252 | -Wunused-value -Wchar-subscripts -Wtraditional -Wshadow -Wcast-qual | |
253 | -Wcast-align -Wwrite-strings -Wconversion -Wstrict-prototypes | |
254 | -Wmissing-prototypes -Wmissing-declarations -Wredundant-decls | |
255 | -Woverloaded-virtual -Winline | |
552054a8 AC |
256 | |
257 | -- | |
258 | ||
61a0eb5b AC |
259 | Deprecate, if not delete, the following: |
260 | ||
261 | register[] | |
262 | register_valid[] | |
263 | register_buffer() | |
264 | REGISTER_BYTE() | |
265 | Replaced by, on the target side | |
266 | supply_register() | |
267 | and on core-gdb side: | |
268 | {read,write}_register_gen() | |
269 | Remote.c will need to use something | |
270 | other than REGISTER_BYTE() and | |
271 | REGISTER_RAW_SIZE() when unpacking | |
272 | [gG] packets. | |
273 | ||
274 | STORE_PSEUDO_REGISTER | |
275 | FETCH_PSEUDO_REGISTER | |
276 | Now handed by the methods | |
277 | gdbarch_{read,write}_register() | |
278 | which sits between core GDB and | |
279 | the register cache. | |
280 | ||
281 | REGISTER_CONVERTIBLE | |
282 | REGISTER_CONVERT_TO_RAW | |
283 | REGISTER_CONVERT_TO_VIRTUAL | |
284 | I think these three are redundant. | |
285 | gdbarch_register_{read,write} can | |
286 | do any conversion it likes. | |
287 | ||
288 | REGISTER_VIRTUAL_SIZE | |
289 | MAX_REGISTER_VIRTUAL_SIZE | |
290 | REGISTER_VIRTUAL_TYPE | |
291 | I think these can be replaced by | |
292 | the pair: | |
293 | FRAME_REGISTER_TYPE(frame, regnum) | |
294 | REGISTER_TYPE(regnum) | |
295 | ||
296 | DO_REGISTERS_INFO | |
297 | Replace with | |
298 | FRAME_REGISTER_INFO (frame, ...) | |
299 | ||
300 | REGISTER_SIM_REGNO() | |
301 | If nothing else rename this so that | |
302 | how it relates to rawreg and the | |
303 | regnum is clear. | |
304 | ||
305 | REGISTER_BYTES | |
306 | The size of the cache can be computed | |
307 | on the fly. | |
308 | ||
ee055267 AC |
309 | IS_TRAPPED_INTERNALVAR |
310 | The pseudo registers should eventually make | |
311 | this redundant. | |
312 | ||
313 | -- | |
314 | ||
315 | Obsolete the targets. | |
316 | ||
317 | arm*-wince-pe | |
318 | mips*-*-pe | |
319 | sh*-*-pe | |
320 | ||
321 | Obsolete the protocols: | |
322 | ||
323 | RDB | |
324 | ||
325 | ``As of version 5.3, WindRiver has removed the RDB server (RDB | |
326 | protocol support is built into gdb).'' -- Till. | |
327 | ||
61a0eb5b AC |
328 | -- |
329 | ||
552054a8 AC |
330 | Restructure gdb directory tree so that it avoids any 8.3 and 14 |
331 | filename problems. | |
332 | ||
333 | -- | |
334 | ||
335 | Convert GDB build process to AUTOMAKE. | |
336 | ||
337 | See also sub-directory configure below. | |
338 | ||
339 | The current convention is (kind of) to use $(<header>_h) in all | |
340 | dependency lists. It isn't done in a consistent way. | |
341 | ||
a50c34dc AC |
342 | -- |
343 | ||
344 | GDB 5.2 - Known Problems | |
345 | ======================== | |
346 | ||
4afc966c AC |
347 | -- |
348 | ||
349 | Code Cleanups: General | |
350 | ====================== | |
351 | ||
352 | The following are more general cleanups and fixes. They are not tied | |
353 | to any specific release. | |
bc9e5bbf AC |
354 | |
355 | -- | |
356 | ||
4a1968f4 AC |
357 | Investigate changing --target=a29k-amd-udi to a29k-*-coff* and |
358 | rationalize *.mt files. The got-ya is in remote-eb.c - it has its own | |
359 | custom tty manipulation - it should be using the serial object. | |
360 | ||
361 | -- | |
362 | ||
a2061976 | 363 | Rename read_register{,_pid}() to read_unsigned_register{,_pid}(). |
a50c34dc AC |
364 | |
365 | -- | |
366 | ||
367 | Can't build IRIX -> arm GDB. | |
368 | http://sourceware.cygnus.com/ml/gdb-patches/2000-04/msg00356.html | |
369 | ||
370 | David Whedon writes: | |
371 | > Now I'm building for an embedded arm target. If there is a way of turning | |
372 | > remote-rdi off, I couldn't find it. It looks like it gets built by default | |
373 | > in gdb/configure.tgt(line 58) Anyway, the build dies in | |
374 | > gdb/rdi-share/unixcomm.c. SERPORT1 et. al. never get defined because we | |
375 | > aren't one of the architectures supported. | |
376 | ||
377 | -- | |
378 | ||
379 | Problem with weak functions | |
380 | http://sourceware.cygnus.com/ml/gdb/2000-05/msg00060.html | |
381 | ||
382 | Dan Nicolaescu writes: | |
383 | > It seems that gdb-4.95.1 does not display correctly the function when | |
384 | > stoping in weak functions. | |
385 | > | |
386 | > It stops in a function that is defined as weak, not in the function | |
387 | > that is actually run... | |
388 | ||
389 | -- | |
390 | ||
391 | Follow through `make check' with --enable-shared. | |
392 | ||
393 | When the srcware tree is configured with --enable-shared, the `expect' | |
394 | program won't run properly. Jim Wilson found out gdb has a local hack | |
395 | to set LD_LIBRARY_PATH, but, AFAIK, no other project has been hacked | |
396 | similarly. | |
397 | ||
398 | http://sourceware.cygnus.com/ml/gdb/2000-q1/msg00845.html | |
399 | ||
400 | -- | |
401 | ||
402 | Delete macro TARGET_BYTE_ORDER_SELECTABLE. | |
403 | ||
404 | Patches in the database. | |
405 | ||
406 | -- | |
407 | ||
408 | printcmd.c (print_address_numeric): | |
409 | ||
410 | NOTE: This assumes that the significant address information is kept in | |
411 | the least significant bits of ADDR - the upper bits were either zero | |
412 | or sign extended. Should ADDRESS_TO_POINTER() or some | |
413 | ADDRESS_TO_PRINTABLE() be used to do the conversion? | |
414 | ||
415 | -- | |
416 | ||
552054a8 AC |
417 | The BFD directory requires bug-fixed AUTOMAKE et.al. |
418 | ||
419 | AUTOMAKE 1.4 incorrectly set the TEXINPUTS environment variable. It | |
420 | contained the full path to texinfo.tex when it should have only | |
421 | contained the directory. The bug has been fixed in the current | |
422 | AUTOMAKE sources. Automake snapshots can be found in: | |
423 | ftp://sourceware.cygnus.com/pub/gdb/snapshots | |
424 | and ftp://sourceware.cygnus.com/pub/binutils | |
425 | ||
426 | -- | |
427 | ||
428 | Find something better than DEFAULT_BFD_ARCH, DEFAULT_BFD_VEC to | |
429 | determine the default isa/byte-order. | |
430 | ||
431 | -- | |
432 | ||
e26cc349 | 433 | Rely on BFD_BIG_ENDIAN and BFD_LITTLE_ENDIAN instead of host dependent |
552054a8 AC |
434 | BIG_ENDIAN and LITTLE_ENDIAN. |
435 | ||
436 | -- | |
437 | ||
d8038014 AC |
438 | Eliminate more compiler warnings. |
439 | ||
440 | Of course there also needs to be the usual debate over which warnings | |
441 | are valid and how to best go about this. | |
442 | ||
443 | One method: choose a single option; get agreement that it is | |
444 | reasonable; try it out to see if there isn't anything silly about it | |
445 | (-Wunused-parameters is an example of that) then incrementally hack | |
446 | away. | |
447 | ||
448 | The other method is to enable all warnings and eliminate them from one | |
449 | file at a time. | |
450 | ||
451 | -- | |
452 | ||
4afc966c | 453 | Elimination of ``(catch_errors_ftype *) func''. |
bc9e5bbf | 454 | |
4afc966c | 455 | Like make_cleanup_func it isn't portable. |
6ecce94d AC |
456 | http://sourceware.cygnus.com/ml/gdb-patches/2000-q1/msg00791.html |
457 | http://sourceware.cygnus.com/ml/gdb-patches/2000-q1/msg00814.html | |
458 | ||
4afc966c AC |
459 | -- |
460 | ||
e255d535 AC |
461 | Nuke #define CONST_PTR. |
462 | ||
463 | -- | |
464 | ||
4afc966c AC |
465 | Nuke USG define. |
466 | ||
467 | -- | |
468 | ||
469 | [PATCH/5] src/intl/Makefile.in:distclean additions | |
470 | http://sourceware.cygnus.com/ml/gdb-patches/2000-04/msg00363.html | |
471 | ||
472 | Do not forget to merge the patch back into the trunk. | |
473 | ||
474 | -- | |
475 | ||
476 | Rationalize the host-endian code (grep for HOST_BYTE_ORDER). | |
477 | ||
478 | At present defs.h includes <endian.h> (which is linux specific) yet | |
479 | almost nothing depends on it. Suggest "gdb_endian.h" which can also | |
480 | handle <machine/endian.h> and only include that where it is really | |
481 | needed. | |
482 | ||
483 | -- | |
484 | ||
4afc966c AC |
485 | Replace savestring() with something from libiberty. |
486 | ||
487 | An xstrldup()? but that would have different semantics. | |
488 | ||
489 | -- | |
490 | ||
491 | Rationalize use of floatformat_unknown in GDB sources. | |
492 | ||
493 | Instead of defaulting to floatformat_unknown, should hosts/targets | |
494 | specify the value explicitly? | |
495 | ||
496 | http://sourceware.cygnus.com/ml/gdb-patches/2000-05/msg00447.html | |
497 | ||
498 | -- | |
499 | ||
500 | Add a ``name'' member to include/floatformat.h:struct floatformat. | |
501 | Print that name in gdbarch.c. | |
502 | ||
503 | -- | |
504 | ||
505 | Sort out the harris mess in include/floatformat.h (it hardwires two | |
506 | different floating point formats). | |
507 | ||
508 | -- | |
509 | ||
510 | See of the GDB local floatformat_do_doublest() and libiberty's | |
511 | floatformat_to_double (which was once GDB's ...) can be merged some | |
512 | how. | |
513 | ||
514 | -- | |
515 | ||
4fcf66da | 516 | Eliminate mmalloc(), mstrsave() et.al. from GDB. |
4afc966c AC |
517 | |
518 | Also eliminate it from defs.h. | |
519 | ||
520 | -- | |
521 | ||
522 | Eliminate PTR. ISO-C allows ``void *''. | |
523 | ||
524 | -- | |
525 | ||
526 | Eliminate abort (). | |
527 | ||
528 | GDB should never abort. GDB should either throw ``error ()'' or | |
529 | ``internal_error ()''. Better still GDB should naturally unwind with | |
530 | an error status. | |
531 | ||
532 | -- | |
533 | ||
534 | GDB probably doesn't build on FreeBSD pre 2.2.x | |
535 | http://sourceware.cygnus.com/ml/gdb-patches/2000-05/msg00378.html | |
536 | ||
537 | Fixes to get FreeBSD working on 2.2.x, 3.x and 4.x caused the code to | |
538 | suffer bit rot. | |
bc9e5bbf AC |
539 | |
540 | -- | |
541 | ||
78566ebe AC |
542 | Deprecate "fg". Apparently ``fg'' is actually continue. |
543 | ||
544 | http://sourceware.cygnus.com/ml/gdb-patches/2000-05/msg00417.html | |
545 | ||
546 | -- | |
547 | ||
548 | Deprecate current use of ``floatformat_unknown''. | |
549 | ||
550 | Require all targets to explicitly provide their float format instead | |
551 | of defaulting to floatformat unknown. Doing the latter leads to nasty | |
552 | bugs. | |
553 | ||
554 | http://sourceware.cygnus.com/ml/gdb-patches/2000-05/msg00447.html | |
bc9e5bbf AC |
555 | |
556 | -- | |
557 | ||
78566ebe AC |
558 | Rationalize floatformat_to_double() vs floatformat_to_doublest(). |
559 | ||
560 | Looks like GDB migrated floatformat_to_double() to libiberty but then | |
561 | turned around and created a ..._to_doublest() the latter containing | |
562 | several bug fixes. | |
563 | ||
564 | http://sourceware.cygnus.com/ml/gdb-patches/2000-05/msg00472.html | |
565 | ||
566 | -- | |
567 | ||
568 | Move floatformat_ia64_ext to libiberty/include floatformat.[ch]. | |
569 | ||
570 | http://sourceware.cygnus.com/ml/gdb-patches/2000-05/msg00466.html | |
571 | ||
572 | -- | |
573 | ||
b4a20239 AC |
574 | The ``maintenance deprecate set endian big'' command doesn't notice |
575 | that it is deprecating ``set endian'' and not ``set endian big'' (big | |
576 | is implemented using an enum). Is anyone going to notice this? | |
577 | ||
578 | -- | |
579 | ||
580 | When tab expanding something like ``set arch<tab>'' ignore the | |
581 | deprecated ``set archdebug'' and expand to ``set architecture''. | |
582 | ||
78566ebe AC |
583 | -- |
584 | ||
53904c9e AC |
585 | Eliminate ``arm_register_names[j] = (char *) regnames[j]'' and the |
586 | like from arm-tdep.c. | |
587 | ||
588 | -- | |
589 | ||
590 | Fix uses of ->function.cfunc = set_function(). | |
591 | ||
592 | The command.c code calls sfunc() when a set command. Rather than | |
593 | change it suggest fixing the callback function so that it is more | |
594 | useful. See: | |
595 | ||
596 | http://sourceware.cygnus.com/ml/gdb-patches/2000-06/msg00062.html | |
597 | ||
598 | See also ``Fix implementation of ``target xxx''.'' below. | |
599 | ||
bf64bfd6 AC |
600 | -- |
601 | ||
602 | IRIX 3.x support is probably broken. | |
603 | ||
5d35f0ac AC |
604 | -- |
605 | ||
606 | Delete sim/SIM_HAVE_BREAKPOINTS and gdb/SIM_HAS_BREAKPOINTS. | |
607 | http://sourceware.cygnus.com/ml/gdb-patches/2000-07/msg00042.html | |
608 | ||
609 | Apart from the d30v, are there any sim/common simulators that make use | |
610 | of this? | |
611 | ||
e26cc349 | 612 | A brief summary of what happened is that sim/common/sim-break.c was |
5d35f0ac AC |
613 | created as a good idea. It turned out a better idea was to use |
614 | SIM_SIGBREAK and have GDB pass back sim_resume (..., SIGBREAK). | |
615 | ||
d471ea57 AC |
616 | -- |
617 | ||
618 | Move remote_remove_hw_breakpoint, remote_insert_hw_breakpoint, | |
619 | remote_remove_watchpoint, remote_insert_watchpoint into target vector. | |
620 | ||
896f1867 AC |
621 | -- |
622 | ||
623 | Eliminate ``extern'' from C files. | |
624 | ||
625 | -- | |
626 | ||
627 | Replace ``STREQ()'' et.al. with ``strcmp() == 0'' et.al. | |
628 | ||
629 | Extreme care is recommeded - perhaps only modify tests that are | |
630 | exercised by the testsuite (as determined using some type of code | |
631 | coverage analysis). | |
632 | ||
2126d5fb AC |
633 | -- |
634 | ||
635 | Replace the file gdb/CONTRIBUTE with a file that is generated from the | |
636 | gdb/doc/*.texinfo directory. | |
637 | ||
ee055267 AC |
638 | -- |
639 | ||
640 | Rewrite/break up sparcl-tdep.c so that it uses ser*.c as the mechanism | |
641 | for accessing either the serial or UDP port. | |
642 | ||
53904c9e | 643 | -- |
78566ebe | 644 | |
4afc966c AC |
645 | New Features and Fixes |
646 | ====================== | |
bc9e5bbf | 647 | |
4afc966c AC |
648 | These are harder than cleanups but easier than work involving |
649 | fundamental architectural change. | |
bc9e5bbf AC |
650 | |
651 | -- | |
652 | ||
0db23c95 | 653 | Hardware watchpoint problems on x86 OSes, including Linux: |
0a9c3cb6 AC |
654 | |
655 | 1. Delete/disable hardware watchpoints should free hardware debug | |
656 | registers. | |
657 | 2. Watch for different values on a viariable with one hardware debug | |
658 | register. | |
659 | ||
660 | According to Eli Zaretskii <eliz@delorie.com>: | |
661 | ||
662 | These are not GDB/ia32 issues per se: the above features are all | |
663 | implemented in the DJGPP port of GDB and work in v5.0. Every | |
664 | x86-based target should be able to lift the relevant parts of | |
665 | go32-nat.c and use them almost verbatim. You get debug register | |
666 | sharing through reference counts, and the ability to watch large | |
667 | regions (up to 16 bytes) using multiple registers. (The required | |
668 | infrastructure in high-level GDB application code, mostly in | |
669 | breakpoint.c, is also working since v5.0.) | |
670 | ||
671 | -- | |
672 | ||
4afc966c AC |
673 | Add built-by, build-date, tm, xm, nm and anything else into gdb binary |
674 | so that you can see how the GDB was created. | |
bc9e5bbf | 675 | |
bc9e5bbf AC |
676 | -- |
677 | ||
4afc966c AC |
678 | Add an "info bfd" command that displays supported object formats, |
679 | similarly to objdump -i. | |
5683e87a | 680 | |
4afc966c | 681 | Is there a command already? |
5683e87a AC |
682 | |
683 | -- | |
684 | ||
4afc966c | 685 | Fix ``I'm sorry, Dave, I can't do that.'' from symfile.c. |
bc9e5bbf | 686 | |
4afc966c | 687 | This requires internationalization. |
bc9e5bbf | 688 | |
4afc966c | 689 | -- |
bc9e5bbf | 690 | |
2e4e9e68 AC |
691 | Add support for: |
692 | ||
693 | (gdb) p fwprintf(stdout,L"%S\n", f) | |
694 | No symbol "L" in current context. | |
695 | ||
696 | -- | |
697 | ||
4afc966c | 698 | Cleanup configury support for optional sub-directories. |
7ae38352 | 699 | |
4afc966c AC |
700 | Check how GCC handles multiple front ends for an example of how things |
701 | could work. A tentative first step is to rationalize things so that | |
702 | all sub directories are handled in a fashion similar to gdb/mi. | |
703 | ||
704 | See also automake above. | |
7ae38352 AC |
705 | |
706 | -- | |
707 | ||
4afc966c AC |
708 | Add a transcript mechanism to GDB. |
709 | ||
710 | Such a mechanism might log all gdb input and output to a file in a | |
711 | form that would allow it to be replayed. It could involve ``gdb | |
712 | --transcript=FILE'' or it could involve ``(gdb) transcript file''. | |
67edb2c6 AC |
713 | |
714 | -- | |
715 | ||
4afc966c | 716 | Can the xdep files be replaced by autoconf? |
bc9e5bbf | 717 | |
4afc966c | 718 | -- |
bc9e5bbf | 719 | |
4afc966c | 720 | Document trace machinery |
bc9e5bbf | 721 | |
4afc966c AC |
722 | -- |
723 | ||
78566ebe AC |
724 | Document ui-out and ui-file. |
725 | ||
726 | http://sourceware.cygnus.com/ml/gdb/2000-04/msg00121.html | |
727 | ||
728 | -- | |
729 | ||
730 | Update texinfo.tex to latest? | |
731 | ||
78566ebe AC |
732 | -- |
733 | ||
734 | Incorporate agentexpr.texi into gdb.texinfo | |
735 | ||
736 | agentexpr.texi mostly describes the details of the byte code used for | |
737 | tracepoints, not the internals of the support for this in GDB. So it | |
738 | looks like gdb.texinfo is a better place for this information. | |
739 | ||
740 | http://sourceware.cygnus.com/ml/gdb-patches/2000-04/msg00566.html | |
741 | ||
742 | -- | |
743 | ||
4afc966c | 744 | Document overlay machinery. |
bc9e5bbf | 745 | |
7ae38352 AC |
746 | -- |
747 | ||
4afc966c | 748 | ``(gdb) catch signal SIGNAL'' |
7ae38352 | 749 | |
e26cc349 | 750 | Overlaps with ``handle SIGNAL'' but the implied behavior is different. |
4afc966c AC |
751 | You can attach commands to a catch but not a handle. A handle has a |
752 | limited number of hardwired actions. | |
7ae38352 AC |
753 | |
754 | -- | |
755 | ||
1c5b31ef AC |
756 | Fix TUI |
757 | ||
758 | o readline/*.h bitrot | |
759 | ||
760 | The TUI isn't up-to-date with | |
761 | respect to the readline currently | |
762 | bundled with GDB. Importing a | |
763 | new readline is on the 5.1 wish | |
764 | list so this can only get worse. | |
765 | ||
766 | Grep for things like term_cursor_move. | |
767 | ||
768 | (To be honest, I don't see anyone | |
769 | importing a new readline before 5.1 is | |
770 | out) | |
771 | ||
772 | o tui.c:va_catch_errors() bitrot | |
773 | ||
774 | This nasty piece of work used knowledge | |
775 | of the internals of GDBs error functions :-( | |
776 | Ever since those internals were cleaned | |
777 | up this code has been broken. :-( | |
778 | ||
779 | o tuiWin.c:c_makeVisibleWithNewHeight() broken | |
780 | tuiLayout.c:_extractDisplayStartAddr() broken | |
781 | ||
782 | Both these function call find_line_pc() | |
783 | incorrectly (wrong args, wrong return value). | |
784 | ||
785 | I suspect this bug has always been there! | |
786 | It had been hidden because those files | |
787 | didn't include the necessary header files | |
788 | from gdb proper :-( | |
789 | ||
790 | o tuiRegs() host dependant | |
791 | ||
792 | Not suprisingly, this isn't a very portable | |
793 | section of code. However, I'm sure people | |
794 | could live with no regs in the short to | |
795 | medium term. | |
796 | ||
797 | o defs.h: #include "tui.h" et.al. | |
798 | ||
799 | I'm not sure where this came from. | |
800 | It was a really bad idea. | |
801 | ||
802 | To get things to compile I did a nasty | |
803 | hack (Just declare what was needed and | |
804 | replace any expressions like xx->y.z() | |
805 | in GDB proper with function calls). I | |
806 | could commit it slightly cleaned up if | |
807 | you like. | |
808 | ||
809 | Medium Term. the #ifdef TUI and TuiDo() | |
810 | should be changed to hooks (like GDBTK). | |
811 | The gdb-events.[hc] is there for that | |
812 | purpose (1) | |
813 | ||
814 | o tui.c:_tuiReset() host dependant | |
815 | ||
816 | tui.c contains a lump of termio[s] | |
817 | I suspect an equivalent block of | |
818 | code can be lifted from readline. | |
819 | An equivalent readline function may | |
820 | even be available. | |
821 | ||
822 | o curses.h vs ncurses.h. | |
823 | ||
824 | Simple portability problem. | |
825 | ||
826 | o subsetCompare() | |
827 | ||
828 | This function is a mystery - where is it? | |
829 | ||
830 | o tui-file.[hc] cleanup | |
831 | ||
832 | This can be significantly simplified. | |
833 | ||
834 | o The code should be pacified. (-Werror -W...) | |
835 | ||
836 | There are plenty of #includes, | |
837 | duplicate #includes, missing function decls | |
838 | and the like. | |
839 | ||
840 | Some of the problems I found were through | |
841 | fixing a few of the warnings. | |
842 | ||
843 | o The code should be GNUtified. | |
844 | ||
845 | It would be very nice to have this code | |
846 | look like the rest of GDB. That way people | |
847 | would be more accepting of it as a true | |
848 | gdb component. | |
849 | ||
850 | Until it is GNUtified it is going to stick | |
851 | out like a sore thumb to the programmer. | |
852 | ||
853 | o The code should be clearly copyrighted | |
854 | ||
855 | (FSF, with due credit to HP) | |
7ae38352 | 856 | |
bc9e5bbf AC |
857 | -- |
858 | ||
4afc966c AC |
859 | Add support for ``gdb --- PROGRAM ARGS ...''. |
860 | Add support for ``gdb -cmd=...'' | |
9debab2f | 861 | |
4afc966c AC |
862 | Along with many variations. Check: |
863 | ||
864 | ????? for a full discussion. | |
865 | ||
866 | for a discussion. | |
9debab2f AC |
867 | |
868 | -- | |
869 | ||
4afc966c | 870 | Implement ``(gdb) !ls''. |
e55e8cee | 871 | |
4afc966c AC |
872 | Which is very different from ``(gdb) ! ls''. Implementing the latter |
873 | is trivial. | |
874 | ||
875 | http://sourceware.cygnus.com/ml/gdb/2000-q1/msg00034.html | |
e55e8cee AC |
876 | |
877 | -- | |
878 | ||
b4a20239 AC |
879 | Change the (char *list[]) to (const char (*)[]) so that dynamic lists can |
880 | be passed. | |
881 | ||
882 | -- | |
883 | ||
884 | When tab expanding something like ``set arch<tab>'' ignore the | |
885 | deprecated ``set archdebug'' and expand to ``set architecture''. | |
886 | ||
887 | -- | |
888 | ||
4afc966c AC |
889 | Replace the code that uses the host FPU with an emulator of the target |
890 | FPU. | |
7ae38352 | 891 | |
4930751a C |
892 | -- |
893 | ||
894 | The "ocd reset" command needs to flush the dcache, which requires breaking | |
895 | the abstraction layer between the target independent and target code. One | |
896 | way to address this is provide a generic "reset" command and target vector. | |
897 | ||
898 | http://sources.redhat.com/ml/gdb-patches/2000-10/msg00011.html | |
899 | ||
4afc966c AC |
900 | -- |
901 | ||
902 | Thread Support | |
903 | ============== | |
7ae38352 AC |
904 | |
905 | -- | |
906 | ||
4afc966c AC |
907 | Generic: lin-thread cannot handle thread exit (Mark Kettenis, Michael |
908 | Snyder) http://sourceware.cygnus.com/ml/gdb/2000-q1/msg00525.html | |
7ae38352 | 909 | |
4afc966c AC |
910 | The thread_db assisted debugging code doesn't handle exiting threads |
911 | properly, at least in combination with glibc 2.1.3 (the framework is | |
912 | there, just not the actual code). There are at least two problems | |
913 | that prevent this from working. | |
914 | ||
915 | As an additional reference point, the pre thread_db code did not work | |
916 | either. | |
7ae38352 AC |
917 | |
918 | -- | |
919 | ||
4afc966c AC |
920 | GNU/Linux/x86 and random thread signals (and Solaris/SPARC but not |
921 | Solaris/x86). | |
922 | http://sourceware.cygnus.com/ml/gdb/2000-q1/msg00336.html | |
7ae38352 | 923 | |
4afc966c AC |
924 | Christopher Blizzard writes: |
925 | ||
926 | So, I've done some more digging into this and it looks like Jim | |
927 | Kingdon has reported this problem in the past: | |
928 | ||
929 | http://sourceware.cygnus.com/ml/bug-gdb/1999-10/msg00058.html | |
930 | ||
931 | I can reproduce this problem both with and without Tom's patch. Has | |
932 | anyone seen this before? Maybe have a solution for it hanging around? | |
933 | :) | |
934 | ||
935 | There's a test case for this documented at: | |
936 | ||
937 | when debugging threaded applications you get extra SIGTRAPs | |
938 | http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=9565 | |
939 | ||
940 | [There should be a GDB testcase - cagney] | |
7ae38352 AC |
941 | |
942 | -- | |
943 | ||
4afc966c AC |
944 | GDB5 TOT on unixware 7 |
945 | http://sourceware.cygnus.com/ml/gdb/2000-04/msg00119.html | |
7ae38352 | 946 | |
4afc966c AC |
947 | Robert Lipe writes: |
948 | > I just spun the top of tree of the GDB5 branch on UnixWare 7. As a | |
949 | > practical matter, the current thread support is somewhat more annoying | |
950 | > than when GDB was thread-unaware. | |
7ae38352 | 951 | |
7ae38352 AC |
952 | -- |
953 | ||
4afc966c AC |
954 | Language Support |
955 | ================ | |
7ae38352 | 956 | |
4afc966c | 957 | New languages come onto the scene all the time. |
7ae38352 AC |
958 | |
959 | -- | |
960 | ||
4afc966c AC |
961 | Re: Various C++ things |
962 | ||
26099b4a AC |
963 | value_headof/value_from_vtable_info are worthless, and should be |
964 | removed. The one place in printcmd.c that uses it should use the RTTI | |
965 | functions. | |
4afc966c | 966 | |
26099b4a AC |
967 | RTTI for g++ should be using the typeinfo functions rather than the |
968 | vtables. The typeinfo functions are always at offset 4 from the | |
969 | beginning of the vtable, and are always right. The vtables will have | |
970 | weird names like E::VB sometimes. The typeinfo function will always | |
971 | be "E type_info function", or somesuch. | |
4afc966c | 972 | |
26099b4a AC |
973 | value_virtual_fn_field needs to be fixed so there are no failures for |
974 | virtual functions for C++ using g++. | |
4afc966c | 975 | |
26099b4a AC |
976 | Testsuite cases are the major priority right now for C++ support, |
977 | since i have to make a lot of changes that could potentially break | |
978 | each other. | |
7ae38352 AC |
979 | |
980 | -- | |
981 | ||
4afc966c | 982 | Add support for Modula3 |
7ae38352 | 983 | |
4afc966c | 984 | Get DEC/Compaq to contribute their Modula-3 support. |
7ae38352 AC |
985 | |
986 | -- | |
987 | ||
4afc966c AC |
988 | Remote Protocol Support |
989 | ======================= | |
7ae38352 AC |
990 | |
991 | -- | |
992 | ||
a2061976 AC |
993 | Revised UDP support (was: Re: [Fwd: [patch] UDP transport support]) |
994 | http://sourceware.cygnus.com/ml/gdb-patches/2000-04/msg00000.html | |
995 | ||
996 | (Broken) support for GDB's remote protocol across UDP is to be | |
997 | included in the follow-on release. | |
998 | ||
999 | It should be noted that UDP can only work when the [Gg] packet fits in | |
1000 | a single UDP packet. | |
1001 | ||
1002 | There is also much debate over the merit of this. | |
1003 | ||
1004 | -- | |
1005 | ||
1006 | Migrate qfThreadInfo packet -> qThreadInfo. (Andrew Cagney) | |
1007 | ||
1008 | Add support for packet enable/disable commands with these thread | |
1009 | packets. General cleanup. | |
1010 | ||
1011 | [PATCH] Document the ThreadInfo remote protocol queries | |
1012 | http://sourceware.cygnus.com/ml/gdb-patches/2000-q1/msg00832.html | |
1013 | ||
1014 | [PATCH] "info threads" queries for remote.c | |
1015 | http://sourceware.cygnus.com/ml/gdb-patches/2000-q1/msg00831.html | |
1016 | ||
1017 | -- | |
1018 | ||
7ae38352 AC |
1019 | Remote protocol doco feedback. |
1020 | ||
1021 | Too much feedback to mention needs to be merged in (901660). Search | |
1022 | for the word ``remote''. | |
1023 | ||
4afc966c AC |
1024 | |
1025 | http://sourceware.cygnus.com/ml/gdb/2000-q1/msg00023.html | |
1026 | http://sourceware.cygnus.com/ml/gdb/2000-q1/msg00056.html | |
1027 | http://sourceware.cygnus.com/ml/gdb/2000-q1/msg00382.html | |
1028 | ||
7ae38352 AC |
1029 | -- |
1030 | ||
4afc966c | 1031 | GDB doesn't recover gracefully from remote protocol errors. |
7ae38352 | 1032 | |
4afc966c AC |
1033 | GDB wasn't checking for NAKs from the remote target. Instead a NAK is |
1034 | ignored and a timeout is required before GDB retries. A pre-cursor to | |
1035 | fixing this this is making GDB's remote protocol packet more robust. | |
1036 | ||
1037 | While downloading to a remote protocol target, gdb ignores packet | |
d471ea57 | 1038 | errors in so far as it will continue to download with chunk N+1 even |
4afc966c AC |
1039 | if chunk N was not correctly sent. This causes gdb.base/remote.exp to |
1040 | take a painfully long time to run. As a PS that test needs to be | |
1041 | fixed so that it builds on 16 bit machines. | |
7ae38352 AC |
1042 | |
1043 | -- | |
1044 | ||
a2061976 AC |
1045 | Fix the ``!'' packet. |
1046 | ||
1047 | JT reported that the existing targets do, in fact return ``OK'' so it | |
1048 | is possible to merge remote and extended-remote targets. | |
1049 | ||
1050 | -- | |
1051 | ||
1052 | Drop ``<address>'' from the [SsCc] packets. | |
1053 | ||
1054 | I don't think that GDB generates them so having it in the protocol is | |
1055 | silly. | |
1056 | ||
1057 | -- | |
1058 | ||
1059 | Fix doco on the ``q'' packet. | |
1060 | ||
1061 | It has evolved into a generic RPC. The notes should reflect this and, | |
1062 | perhaps, the ``Q'' packet can be deprecated. | |
1063 | ||
1064 | The doco should mention that ``OK'' is a valid packet response. | |
1065 | ||
1066 | The doco should explain why ``OK'' needs to be a valid packet | |
1067 | response. | |
1068 | ||
1069 | -- | |
1070 | ||
4afc966c | 1071 | Add the cycle step command. |
7ae38352 | 1072 | |
4afc966c | 1073 | http://sourceware.cygnus.com/ml/gdb/2000-q1/msg00237.html |
7ae38352 | 1074 | |
26099b4a AC |
1075 | -- |
1076 | ||
1077 | Resolve how to scale things to support very large packets. | |
1078 | ||
1079 | -- | |
1080 | ||
1081 | Resolve how to handle a target that changes things like its endianess | |
1082 | on the fly - should it be returned in the ``T'' packet? | |
1083 | ||
1084 | Underlying problem is that the register file is target endian. If the | |
1085 | target endianess changes gdb doesn't know. | |
1086 | ||
ee055267 AC |
1087 | Suggest encoding registers as NN!VALUE. |
1088 | ||
1089 | -- | |
1090 | ||
1091 | GDB should allow incomming packets to be larger than outgoing ones. A | |
1092 | fully loaded T packet (containing all registers) can be very large - | |
1093 | definitly larger than a corresponding Gg packet. | |
1094 | ||
7ae38352 AC |
1095 | -- |
1096 | ||
4afc966c AC |
1097 | Symbol Support |
1098 | ============== | |
7ae38352 | 1099 | |
4afc966c AC |
1100 | If / when GDB starts to support the debugging of multi-processor |
1101 | (rather than multi-thread) applications the symtab code will need to | |
e26cc349 | 1102 | be updated a little so that several independent symbol tables are |
4afc966c AC |
1103 | active at a given time. |
1104 | ||
1105 | The other interesting change is a clarification of the exact meaning | |
1106 | of CORE_ADDR and that has had consequences for a few targets (that | |
1107 | were abusing that data type). | |
7ae38352 | 1108 | |
d8038014 AC |
1109 | -- |
1110 | ||
4afc966c | 1111 | Investiagate ways of reducing memory. |
d8038014 AC |
1112 | |
1113 | -- | |
1114 | ||
4afc966c | 1115 | Investigate ways of improving load time. |
d8038014 | 1116 | |
4afc966c AC |
1117 | -- |
1118 | ||
1119 | Get the d10v to use POINTER_TO_ADDRESS and ADDRESS_TO_POINTER. | |
1120 | ||
1121 | Consequence of recent symtab clarification. No marks for figuring out | |
1122 | who maintains the d10v. | |
d8038014 | 1123 | |
0aaf65d7 AC |
1124 | -- |
1125 | ||
4afc966c AC |
1126 | Get the MIPS to correctly sign extend all address <-> pointer |
1127 | conversions. | |
0aaf65d7 | 1128 | |
4afc966c AC |
1129 | Consequence of recent symtab clarification. No marks for figuring out |
1130 | who maintains the MIPS. | |
0aaf65d7 | 1131 | |
5d35f0ac AC |
1132 | -- |
1133 | ||
1134 | GDB truncates 64 bit enums. | |
1135 | ||
1136 | http://sourceware.cygnus.com/ml/gdb-patches/2000-06/msg00290.html | |
1137 | ||
26099b4a AC |
1138 | -- |
1139 | ||
1140 | Testsuite Support | |
1141 | ================= | |
1142 | ||
1143 | There are never to many testcases. | |
1144 | ||
1145 | -- | |
1146 | ||
1147 | Better thread testsuite. | |
1148 | ||
1149 | -- | |
1150 | ||
1151 | Better C++ testsuite. | |
1152 | ||
1153 | -- | |
1154 | ||
1155 | Look at adding a GDB specific testsuite directory so that white box | |
1156 | tests of key internals can be added (eg ui_file). | |
1157 | ||
1158 | -- | |
1159 | ||
1160 | Separate out tests that involve the floating point (FP). | |
1161 | ||
1162 | (Something for people brining up new targets). FP and non-fp tests | |
1163 | are combined. I think there should be set of basic tests that | |
1164 | exercise pure integer support and then a more expanded set that | |
1165 | exercise FP and FP/integer interactions. | |
1166 | ||
1167 | As an example, the MIPS, for n32 as problems with passing FP's and | |
1168 | structs. Since most inferior call tests include FP it is difficult to | |
1169 | determine of the integer tests are ok. | |
1170 | ||
7ae38352 AC |
1171 | -- |
1172 | ||
4afc966c AC |
1173 | Architectural Changes: General |
1174 | ============================== | |
7ae38352 AC |
1175 | |
1176 | These are harder than simple cleanups / fixes and, consequently | |
1177 | involve more work. Typically an Architectural Change will be broken | |
1178 | down into a more digestible set of cleanups and fixes. | |
1179 | ||
1180 | -- | |
1181 | ||
4afc966c AC |
1182 | Cleanup software single step. |
1183 | ||
1184 | At present many targets implement software single step by directly | |
1185 | blatting memory (see rs6000-tdep.c). Those targets should register | |
1186 | the applicable breakpoints using the breakpoint framework. Perhaphs a | |
1187 | new internal breakpoint class ``step'' is needed. | |
1188 | ||
1189 | -- | |
1190 | ||
7ae38352 AC |
1191 | Replace READ_FP() with FRAME_HANDLE(). |
1192 | ||
1193 | READ_FP() is a hangover from the days of the vax when the ABI really | |
1194 | did have a frame pointer register. Modern architectures typically | |
1195 | construct a virtual frame-handle from the stack pointer and various | |
1196 | other bits of string. | |
1197 | ||
e26cc349 | 1198 | Unfortunately GDB still treats this synthetic FP register as though it |
7ae38352 AC |
1199 | is real. That in turn really confuses users (arm and ``print $fp'' VS |
1200 | ``info registers fp''). The synthetic FP should be separated out of | |
1201 | the true register set presented to the user. | |
1202 | ||
1203 | -- | |
1204 | ||
2a00c9ce AC |
1205 | Register Cache Cleanup (below from Andrew Cagney) |
1206 | ||
1207 | I would depict the current register architecture as something like: | |
1208 | ||
1209 | High GDB --> Low GDB | |
1210 | | | | |
1211 | \|/ \|/ | |
1212 | --- REG NR ----- | |
1213 | | | |
1214 | register + REGISTER_BYTE(reg_nr) | |
1215 | | | |
1216 | \|/ | |
1217 | ------------------------- | |
1218 | | extern register[] | | |
1219 | ------------------------- | |
1220 | ||
1221 | where neither the high (valops.c et.al.) or low gdb (*-tdep.c) are | |
1222 | really clear on what mechanisms they should be using to manipulate that | |
1223 | buffer. Further, much code assumes, dangerously, that registers are | |
1224 | contigious. Having got mips-tdep.c to support multiple ABIs, believe | |
1225 | me, that is a bad assumption. Finally, that register cache layout is | |
1226 | determined by the current remote/local target and _not_ the less | |
1227 | specific target ISA. In fact, in many cases it is determined by the | |
1228 | somewhat arbitrary layout of the [gG] packets! | |
1229 | ||
1230 | ||
1231 | How I would like the register file to work is more like: | |
1232 | ||
1233 | ||
1234 | High GDB | |
1235 | | | |
1236 | \|/ | |
1237 | pseudo reg-nr | |
1238 | | | |
1239 | map pseudo <-> | |
1240 | random cache | |
1241 | bytes | |
1242 | | | |
1243 | \|/ | |
1244 | ------------ | |
1245 | | register | | |
1246 | | cache | | |
1247 | ------------ | |
1248 | /|\ | |
1249 | | | |
1250 | map random cache | |
1251 | bytes to target | |
e26cc349 | 1252 | dependent i-face |
2a00c9ce AC |
1253 | /|\ |
1254 | | | |
e26cc349 | 1255 | target dependent |
2a00c9ce AC |
1256 | such as [gG] packet |
1257 | or ptrace buffer | |
1258 | ||
1259 | The main objectives being: | |
1260 | ||
1261 | o a clear separation between the low | |
1262 | level target and the high level GDB | |
1263 | ||
1264 | o a mechanism that solves the general | |
1265 | problem of register aliases, overlaps | |
1266 | etc instead of treating them as optional | |
1267 | extras that can be wedged in as an after | |
1268 | thought (that is a reasonable description | |
1269 | of the current code). | |
1270 | ||
1271 | Identify then solve the hard case and the | |
1272 | rest just falls out. GDB solved the easy | |
1273 | case and then tried to ignore the real | |
1274 | world :-) | |
1275 | ||
1276 | o a removal of the assumption that the | |
1277 | mapping between the register cache | |
1278 | and virtual registers is largely static. | |
1279 | If you flip the USR/SSR stack register | |
1280 | select bit in the status-register then | |
1281 | the corresponding stack registers should | |
1282 | reflect the change. | |
1283 | ||
1284 | o a mechanism that clearly separates the | |
1285 | gdb internal register cache from any | |
e26cc349 | 1286 | target (not architecture) dependent |
2a00c9ce AC |
1287 | specifics such as [gG] packets. |
1288 | ||
1289 | Of course, like anything, it sounds good in theory. In reality, it | |
1290 | would have to contend with many<->many relationships at both the | |
1291 | virt<->cache and cache<->target level. For instance: | |
1292 | ||
1293 | virt<->cache | |
1294 | Modifying an mmx register may involve | |
1295 | scattering values across both FP and | |
1296 | mmpx specific parts of a buffer | |
1297 | ||
1298 | cache<->target | |
1299 | When writing back a SP it may need to | |
1300 | both be written to both SP and USP. | |
1301 | ||
1302 | ||
1303 | Hmm, | |
1304 | ||
1305 | Rather than let this like the last time it was discussed, just slip, I'm | |
1306 | first going to add this e-mail (+ references) to TODO. I'd then like to | |
1307 | sketch out a broad strategy I think could get us there. | |
1308 | ||
1309 | ||
1310 | First thing I'd suggest is separating out the ``extern registers[]'' | |
1311 | code so that we can at least identify what is using it. At present | |
1312 | things are scattered across many files. That way we can at least | |
1313 | pretend that there is a cache instead of a global array :-) | |
1314 | ||
1315 | I'd then suggest someone putting up a proposal for the pseudo-reg / | |
1316 | high-level side interface so that code can be adopted to it. For old | |
1317 | code, initially a blanket rename of write_register_bytes() to | |
1318 | deprecated_write_register_bytes() would help. | |
1319 | ||
1320 | Following that would, finaly be the corresponding changes to the target. | |
bc9e5bbf AC |
1321 | |
1322 | -- | |
1323 | ||
67edb2c6 AC |
1324 | Check that GDB can handle all BFD architectures (Andrew Cagney) |
1325 | ||
1326 | There should be a test that checks that BFD/GDB are in sync with | |
1327 | regard to architecture changes. Something like a test that first | |
1328 | queries GDB for all supported architectures and then feeds each back | |
1329 | to GDB.. Anyone interested in learning how to write tests? :-) | |
1330 | ||
1331 | -- | |
1332 | ||
4afc966c AC |
1333 | Architectural Change: Multi-arch et al. |
1334 | ======================================= | |
2a00c9ce | 1335 | |
4afc966c AC |
1336 | The long term objective is to remove all assumptions that there is a |
1337 | single target with a single address space with a single instruction | |
1338 | set architecture and single application binary interface. | |
2a00c9ce | 1339 | |
4afc966c AC |
1340 | This is an ongoing effort. The first milestone is to enable |
1341 | ``multi-arch'' where by all architectural decisions are made at | |
1342 | runtime. | |
7ae38352 | 1343 | |
4afc966c AC |
1344 | It should be noted that ``gdbarch'' is really ``gdbabi'' and |
1345 | ``gdbisa''. Once things are multi-arched breaking that down correctly | |
1346 | will become much easier. | |
7ae38352 AC |
1347 | |
1348 | -- | |
1349 | ||
4afc966c | 1350 | GDBARCH cleanup (Andrew Cagney) |
7ae38352 | 1351 | |
4afc966c AC |
1352 | The non-generated parts of gdbarch.{sh,h,c} should be separated out |
1353 | into arch-utils.[hc]. | |
1354 | ||
1355 | Document that gdbarch_init_ftype could easily fail because it didn't | |
1356 | identify an architecture. | |
ed952ac5 AC |
1357 | |
1358 | -- | |
1359 | ||
4afc966c | 1360 | Fix BELIEVE_PPC_PROMOTION. Change it to BELIEVE_PPC_PROMOTION_P? |
ed952ac5 | 1361 | |
4afc966c AC |
1362 | At present there is still #ifdef BELIEVE_PPC_PROMOTION code in the |
1363 | symtab file. | |
ed952ac5 | 1364 | |
4afc966c AC |
1365 | -- |
1366 | ||
8e6a3c35 AC |
1367 | Fix target_signal_from_host() etc. |
1368 | ||
1369 | The name is wrong for starters. ``target_signal'' should probably be | |
1370 | ``gdb_signal''. ``from_host'' should be ``from_target_signal''. | |
e26cc349 | 1371 | After that it needs to be multi-arched and made independent of any |
8e6a3c35 AC |
1372 | host signal numbering. |
1373 | ||
ee055267 AC |
1374 | Once this is done, the signal enum can probably be moved to |
1375 | include/gdb so that it is available to embedded stubs. | |
1376 | ||
8e6a3c35 AC |
1377 | -- |
1378 | ||
4afc966c AC |
1379 | Update ALPHA so that it uses ``struct frame_extra_info'' instead of |
1380 | EXTRA_FRAME_INFO. | |
1381 | ||
1382 | This is a barrier to replacing mips_extra_func_info with something | |
1383 | that works with multi-arch. | |
7ae38352 AC |
1384 | |
1385 | -- | |
1386 | ||
4afc966c AC |
1387 | Multi-arch mips_extra_func_info. |
1388 | ||
1389 | This first needs the alpha to be updated so that it uses ``struct | |
1390 | frame_extra_info''. | |
7ae38352 AC |
1391 | |
1392 | -- | |
1393 | ||
4afc966c | 1394 | Rationalize TARGET_SINGLE_FORMAT and TARGET_SINGLE_BIT et al. |
7ae38352 | 1395 | |
4afc966c | 1396 | Surely one of them is redundant. |
7ae38352 AC |
1397 | |
1398 | -- | |
1399 | ||
4afc966c | 1400 | Convert ALL architectures to MULTI-ARCH. |
7ae38352 AC |
1401 | |
1402 | -- | |
1403 | ||
1404 | Select the initial multi-arch ISA / ABI based on --target or similar. | |
1405 | ||
1406 | At present the default is based on what ever is first in the BFD | |
1407 | archures table. It should be determined based on the ``--target=...'' | |
1408 | name. | |
1409 | ||
1410 | -- | |
1411 | ||
bf64bfd6 AC |
1412 | Make MIPS pure multi-arch. |
1413 | ||
1414 | It is only at the multi-arch enabled stage. | |
1415 | ||
1416 | -- | |
1417 | ||
7ae38352 AC |
1418 | Truly multi-arch. |
1419 | ||
1420 | Enable the code to recognize --enable-targets=.... like BINUTILS does. | |
1421 | ||
4afc966c AC |
1422 | Can the tm.h and nm.h files be eliminated by multi-arch. |
1423 | ||
7ae38352 AC |
1424 | -- |
1425 | ||
4afc966c AC |
1426 | Architectural Change: MI, LIBGDB and scripting languages |
1427 | ======================================================== | |
7ae38352 | 1428 | |
4afc966c AC |
1429 | See also architectural changes related to the event loop. LIBGDB |
1430 | can't be finished until there is a generic event loop being used by | |
1431 | all targets. | |
1432 | ||
1433 | The long term objective is it to be possible to integrate GDB into | |
1434 | scripting languages. | |
7ae38352 AC |
1435 | |
1436 | -- | |
1437 | ||
4afc966c | 1438 | Implement generic ``(gdb) commmand > file'' |
7ae38352 | 1439 | |
4afc966c AC |
1440 | Once everything is going through ui_file it should be come fairly |
1441 | easy. | |
1442 | ||
1443 | http://sourceware.cygnus.com/ml/gdb/2000-04/msg00104.html | |
1444 | ||
1445 | -- | |
1446 | ||
1447 | Replace gdb_stdtarg with gdb_targout (and possibly gdb_targerr). | |
1448 | ||
1449 | gdb_stdtarg is easily confused with gdb_stdarg. | |
1450 | ||
1451 | -- | |
1452 | ||
1453 | Extra ui_file methods - dump. | |
1454 | ||
26099b4a | 1455 | Very useful for whitebox testing. |
4afc966c AC |
1456 | |
1457 | -- | |
1458 | ||
1459 | Eliminate error_begin(). | |
1460 | ||
1461 | With ui_file, there is no need for the statefull error_begin () | |
1462 | function. | |
1463 | ||
1464 | -- | |
1465 | ||
1466 | Send normal output to gdb_stdout. | |
1467 | Send error messages to gdb_stderror. | |
1468 | Send debug and log output log gdb_stdlog. | |
1469 | ||
1470 | GDB still contains many cases where (f)printf or printf_filtered () is | |
1471 | used when it should be sending the messages to gdb_stderror or | |
1472 | gdb_stdlog. The thought of #defining printf to something has crossed | |
1473 | peoples minds ;-) | |
7ae38352 AC |
1474 | |
1475 | -- | |
1476 | ||
1477 | Re-do GDB's output pager. | |
1478 | ||
1479 | GDB's output pager still relies on people correctly using *_filtered | |
1480 | for gdb_stdout and *_unfiltered for gdb_stdlog / gdb_stderr. | |
1481 | Hopefully, with all normal output going to gdb_stdout, the pager can | |
1482 | just look at the ui_file that the output is on and then use that to | |
1483 | decide what to do about paging. Sounds good in theory. | |
1484 | ||
1485 | -- | |
1486 | ||
4afc966c AC |
1487 | Check/cleanup MI documentation. |
1488 | ||
1489 | The list of commands specified in the documentation needs to be | |
1490 | checked against the mi-cmds.c table in a mechanical way (so that they | |
1491 | two can be kept up-to-date). | |
1492 | ||
1493 | -- | |
1494 | ||
1495 | Convert MI into libgdb | |
1496 | ||
1497 | MI provides a text interface into what should be many of the libgdb | |
1498 | functions. The implementation of those functions should be separated | |
1499 | into the MI interface and the functions proper. Those functions being | |
1500 | moved to gdb/lib say. | |
1501 | ||
1502 | -- | |
1503 | ||
1504 | Create libgdb.h | |
1505 | ||
1506 | The first part can already be found in defs.h. | |
1507 | ||
1508 | -- | |
1509 | ||
1510 | MI's input does not use buffering. | |
1511 | ||
1512 | At present the MI interface reads raw characters of from an unbuffered | |
1513 | FD. This is to avoid several nasty buffer/race conditions. That code | |
1514 | should be changed so that it registers its self with the event loop | |
1515 | (on the input FD) and then push commands up to MI as they arrive. | |
1516 | ||
1517 | The serial code already does this. | |
1518 | ||
1519 | -- | |
1520 | ||
e26cc349 | 1521 | Make MI interface accessible from existing CLI. |
4afc966c AC |
1522 | |
1523 | -- | |
1524 | ||
1525 | Add a breakpoint-edit command to MI. | |
1526 | ||
1527 | It would be similar to MI's breakpoint create but would apply to an | |
1528 | existing breakpoint. It saves the need to delete/create breakpoints | |
1529 | when ever they are changed. | |
1530 | ||
1531 | -- | |
1532 | ||
1533 | Add directory path to MI breakpoint. | |
1534 | ||
1535 | That way the GUI's task of finding the file within which the | |
1536 | breakpoint was set is simplified. | |
1537 | ||
1538 | -- | |
1539 | ||
1540 | Add a mechanism to reject certain expression classes to MI | |
7ae38352 AC |
1541 | |
1542 | There are situtations where you don't want GDB's expression | |
1543 | parser/evaluator to perform inferior function calls or variable | |
4afc966c AC |
1544 | assignments. A way of restricting the expression parser so that such |
1545 | operations are not accepted would be very helpful. | |
7ae38352 AC |
1546 | |
1547 | -- | |
1548 | ||
1549 | Remove sideffects from libgdb breakpoint create function. | |
1550 | ||
1551 | The user can use the CLI to create a breakpoint with partial | |
1552 | information - no file (gdb would use the file from the last | |
1553 | breakpoint). | |
1554 | ||
1555 | The libgdb interface currently affects that environment which can lead | |
1556 | to confusion when a user is setting breakpoints via both the MI and | |
1557 | the CLI. | |
1558 | ||
1559 | This is also a good example of how getting the CLI ``right'' will be | |
1560 | hard. | |
1561 | ||
1562 | -- | |
1563 | ||
4afc966c | 1564 | Move gdb_lasterr to ui_out? |
7ae38352 | 1565 | |
4afc966c AC |
1566 | The way GDB throws errors and records them needs a re-think. ui_out |
1567 | handles the correct output well. It doesn't resolve what to do with | |
1568 | output / error-messages when things go wrong. | |
7ae38352 | 1569 | |
97c3646f AC |
1570 | -- |
1571 | ||
1572 | do_setshow_command contains a 1024 byte buffer. | |
1573 | ||
1574 | The function assumes that there will never be any more than 1024 bytes | |
1575 | of enum. It should use mem_file. | |
1576 | ||
1577 | -- | |
1578 | ||
1579 | Should struct cmd_list_element . completer take the command as an | |
1580 | argument? | |
1581 | ||
1582 | -- | |
1583 | ||
1584 | Should the bulk of top.c:line_completion_function() be moved to | |
1585 | command.[hc]? complete_on_cmdlist() and complete_on_enums() could | |
1586 | then be made private. | |
1587 | ||
1588 | -- | |
1589 | ||
1590 | top.c (execute_command): Should a command being valid when the target | |
1591 | is running be made an attribute (predicate) to the command rather than | |
1592 | an explicit set of tests. | |
1593 | ||
1594 | -- | |
1595 | ||
1596 | top.c (execute_command): Should the bulk of this function be moved | |
1597 | into command.[hc] so that top.c doesn't grub around in the command | |
1598 | internals? | |
1599 | ||
4afc966c AC |
1600 | -- |
1601 | ||
1602 | Architectural Change: Async | |
1603 | =========================== | |
1604 | ||
1605 | While GDB uses an event loop when prompting the user for input. That | |
1606 | event loop is not exploited by targets when they allow the target | |
1607 | program to continue. Typically targets still block in (target_wait()) | |
1608 | until the program again halts. | |
1609 | ||
1610 | The closest a target comes to supporting full asynchronous mode are | |
1611 | the remote targets ``async'' and ``extended-async''. | |
7ae38352 AC |
1612 | |
1613 | -- | |
1614 | ||
4afc966c | 1615 | Asynchronous expression evaluator |
7ae38352 | 1616 | |
4afc966c | 1617 | Inferior function calls hang GDB. |
7ae38352 AC |
1618 | |
1619 | -- | |
1620 | ||
1621 | Fix implementation of ``target xxx''. | |
1622 | ||
1623 | At present when the user specifies ``target xxxx'', the CLI maps that | |
1624 | directly onto a target open method. It is then assumed that the | |
1625 | target open method should do all sorts of complicated things as this | |
1626 | is the only chance it has. Check how the various remote targets | |
1627 | duplicate the target operations. Check also how the various targets | |
1628 | behave differently for purely arbitrary reasons. | |
1629 | ||
1630 | What should happen is that ``target xxxx'' should call a generic | |
1631 | ``target'' function and that should then co-ordinate the opening of | |
1632 | ``xxxx''. This becomes especially important when you're trying to | |
1633 | open an asynchronous target that may need to perform background tasks | |
1634 | as part of the ``attach'' phase. | |
1635 | ||
e26cc349 | 1636 | Unfortunately, due to limitations in the old/creaking command.h |
7ae38352 AC |
1637 | interface, that isn't possible. The function being called isn't told |
1638 | of the ``xxx'' or any other context information. | |
1639 | ||
1640 | Consequently a precursor to fixing ``target xxxx'' is to clean up the | |
1641 | CLI code so that it passes to the callback function (attatched to a | |
1642 | command) useful information such as the actual command and a context | |
1643 | for that command. Other changes such as making ``struct command'' | |
1644 | opaque may also help. | |
1645 | ||
53904c9e AC |
1646 | See also: |
1647 | http://sourceware.cygnus.com/ml/gdb-patches/2000-06/msg00062.html | |
1648 | ||
7ae38352 AC |
1649 | -- |
1650 | ||
4afc966c AC |
1651 | Make "target xxx" command interruptible. |
1652 | ||
1653 | As things become async this becomes possible. A target would start | |
1654 | the connect and then return control to the event loop. A cntrl-c | |
1655 | would notify the target that the operation is to be abandoned and the | |
1656 | target code could respond. | |
7ae38352 AC |
1657 | |
1658 | -- | |
1659 | ||
4afc966c AC |
1660 | Add a "suspend" subcommand of the "continue" command to suspend gdb |
1661 | while continuing execution of the subprocess. Useful when you are | |
1662 | debugging servers and you want to dodge out and initiate a connection | |
1663 | to a server running under gdb. | |
1664 | ||
1665 | [hey async!!] | |
7ae38352 | 1666 | |
2a00c9ce AC |
1667 | -- |
1668 | ||
26099b4a AC |
1669 | TODO FAQ |
1670 | ======== | |
1671 | ||
1672 | Frequently requested but not approved requests. | |
1673 | ||
1674 | -- | |
1675 | ||
1676 | Eliminate unused argument warnings using ATTRIBUTE_UNUSED. | |
1677 | ||
1678 | The benefits on this one are thought to be marginal - GDBs design | |
1679 | means that unused parameters are very common. GCC 3.0 will also | |
1680 | include the option -Wno-unused-parameter which means that ``-Wall | |
1681 | -Wno-unused-parameters -Werror'' can be specified. | |
1682 | ||
1683 | -- | |
1684 | ||
1685 | ||
1686 | ||
2a00c9ce AC |
1687 | Legacy Wish List |
1688 | ================ | |
1689 | ||
1690 | This list is not up to date, and opinions vary about the importance or | |
1691 | even desirability of some of the items. If you do fix something, it | |
1692 | always pays to check the below. | |
1693 | ||
1694 | -- | |
c906108c | 1695 | |
b83266a0 SS |
1696 | @c This does not work (yet if ever). FIXME. |
1697 | @c @item --parse=@var{lang} @dots{} | |
1698 | @c Configure the @value{GDBN} expression parser to parse the listed languages. | |
1699 | @c @samp{all} configures @value{GDBN} for all supported languages. To get a | |
1700 | @c list of all supported languages, omit the argument. Without this | |
1701 | @c option, @value{GDBN} is configured to parse all supported languages. | |
1702 | ||
7ae38352 | 1703 | -- |
c906108c SS |
1704 | |
1705 | START_INFERIOR_TRAPS_EXPECTED need never be defined to 2, since that | |
1706 | is its default value. Clean this up. | |
1707 | ||
7ae38352 AC |
1708 | -- |
1709 | ||
c906108c SS |
1710 | It should be possible to use symbols from shared libraries before we know |
1711 | exactly where the libraries will be loaded. E.g. "b perror" before running | |
1712 | the program. This could maybe be done as an extension of the "breakpoint | |
1713 | re-evaluation" after new symbols are loaded. | |
1714 | ||
7ae38352 AC |
1715 | -- |
1716 | ||
c906108c SS |
1717 | Make single_step() insert and remove breakpoints in one operation. |
1718 | ||
26099b4a AC |
1719 | [If this is talking about having single_step() insert the breakpoints, |
1720 | run the target then pull the breakpoints then it is wrong. The | |
1721 | function has to return as control has to eventually be passed back to | |
1722 | the main event loop.] | |
1723 | ||
7ae38352 AC |
1724 | -- |
1725 | ||
c906108c SS |
1726 | Speed up single stepping by avoiding extraneous ptrace calls. |
1727 | ||
7ae38352 AC |
1728 | -- |
1729 | ||
c906108c SS |
1730 | Speed up single stepping by not inserting and removing breakpoints |
1731 | each time the inferior starts and stops. | |
1732 | ||
1733 | Breakpoints should not be inserted and deleted all the time. Only the | |
1734 | one(s) there should be removed when we have to step over one. Support | |
1735 | breakpoints that don't have to be removed to step over them. | |
1736 | ||
7ae38352 | 1737 | [this has resulted in numerous debates. The issue isn't clear cut] |
c906108c | 1738 | |
7ae38352 | 1739 | -- |
c906108c SS |
1740 | |
1741 | Provide "voodoo" debugging of core files. This creates a zombie | |
1742 | process as a child of the debugger, and loads it up with the data, | |
1743 | stack, and regs of the core file. This allows you to call functions | |
1744 | in the executable, to manipulate the data in the core file. | |
1745 | ||
7ae38352 | 1746 | [you wish] |
c906108c | 1747 | |
7ae38352 | 1748 | -- |
c906108c | 1749 | |
7ae38352 | 1750 | GDB reopens the source file on every line, as you "next" through it. |
c906108c | 1751 | |
7ae38352 | 1752 | [still true? I've a memory of this being fixed] |
c906108c | 1753 | |
7ae38352 | 1754 | -- |
c906108c SS |
1755 | |
1756 | Perhaps "i source" should take an argument like that of "list". | |
1757 | ||
7ae38352 | 1758 | -- |
c906108c SS |
1759 | |
1760 | Remove "at 0xnnnn" from the "b foo" response, if `print address off' and if | |
1761 | it matches the source line indicated. | |
1762 | ||
7ae38352 | 1763 | -- |
c906108c | 1764 | |
7ae38352 | 1765 | The prompt at end of screen should accept space as well as CR. |
c906108c | 1766 | |
7ae38352 | 1767 | -- |
c906108c SS |
1768 | |
1769 | Backtrace should point out what the currently selected frame is, in | |
1770 | its display, perhaps showing "@3 foo (bar, ...)" or ">3 foo (bar, | |
1771 | ...)" rather than "#3 foo (bar, ...)". | |
1772 | ||
7ae38352 AC |
1773 | -- |
1774 | ||
c906108c SS |
1775 | "i program" should work for core files, and display more info, like what |
1776 | actually caused it to die. | |
1777 | ||
7ae38352 AC |
1778 | -- |
1779 | ||
c906108c SS |
1780 | "x/10i" should shorten the long name, if any, on subsequent lines. |
1781 | ||
7ae38352 | 1782 | -- |
c906108c SS |
1783 | |
1784 | "next" over a function that longjumps, never stops until next time you happen | |
1785 | to get to that spot by accident. E.g. "n" over execute_command which has | |
1786 | an error. | |
1787 | ||
7ae38352 AC |
1788 | -- |
1789 | ||
c906108c SS |
1790 | "set zeroprint off", don't bother printing members of structs which |
1791 | are entirely zero. Useful for those big structs with few useful | |
1792 | members. | |
1793 | ||
7ae38352 AC |
1794 | -- |
1795 | ||
c906108c SS |
1796 | GDB does four ioctl's for every command, probably switching terminal modes |
1797 | to/from inferior or for readline or something. | |
1798 | ||
7ae38352 AC |
1799 | -- |
1800 | ||
c906108c SS |
1801 | terminal_ours versus terminal_inferior: cache state. Switch should be a noop |
1802 | if the state is the same, too. | |
1803 | ||
7ae38352 | 1804 | -- |
c906108c SS |
1805 | |
1806 | "i frame" shows wrong "arglist at" location, doesn't show where the args | |
1807 | should be found, only their actual values. | |
1808 | ||
7ae38352 AC |
1809 | -- |
1810 | ||
c906108c SS |
1811 | There should be a way for "set" commands to validate the new setting |
1812 | before it takes effect. | |
1813 | ||
7ae38352 | 1814 | -- |
c906108c SS |
1815 | |
1816 | "ena d" is ambiguous, why? "ena delete" seems to think it is a command! | |
1817 | ||
7ae38352 | 1818 | -- |
c906108c SS |
1819 | |
1820 | i line VAR produces "Line number not known for symbol ``var''.". I | |
1821 | thought we were stashing that info now! | |
1822 | ||
7ae38352 AC |
1823 | -- |
1824 | ||
c906108c SS |
1825 | We should be able to write to random files at hex offsets like adb. |
1826 | ||
7ae38352 AC |
1827 | -- |
1828 | ||
7ae38352 AC |
1829 | [elena - delete this] |
1830 | ||
c906108c SS |
1831 | Handle add_file with separate text, data, and bss addresses. Maybe |
1832 | handle separate addresses for each segment in the object file? | |
1833 | ||
7ae38352 AC |
1834 | -- |
1835 | ||
1836 | [Jimb/Elena delete this one] | |
1837 | ||
c906108c SS |
1838 | Handle free_named_symtab to cope with multiply-loaded object files |
1839 | in a dynamic linking environment. Should remember the last copy loaded, | |
1840 | but not get too snowed if it finds references to the older copy. | |
1841 | ||
7ae38352 AC |
1842 | -- |
1843 | ||
1844 | [elena delete this also] | |
c906108c SS |
1845 | |
1846 | Remove all references to: | |
1847 | text_offset | |
1848 | data_offset | |
1849 | text_data_start | |
1850 | text_end | |
1851 | exec_data_offset | |
1852 | ... | |
1853 | now that we have BFD. All remaining are in machine dependent files. | |
1854 | ||
7ae38352 | 1855 | -- |
c906108c SS |
1856 | |
1857 | Re-organize help categories into things that tend to fit on a screen | |
1858 | and hang together. | |
1859 | ||
7ae38352 | 1860 | -- |
c906108c SS |
1861 | |
1862 | Add in commands like ADB's for searching for patterns, etc. We should | |
1863 | be able to examine and patch raw unsymboled binaries as well in gdb as | |
1864 | we can in adb. (E.g. increase the timeout in /bin/login without source). | |
1865 | ||
7ae38352 AC |
1866 | [actually, add ADB interface :-] |
1867 | ||
1868 | -- | |
c906108c SS |
1869 | |
1870 | When doing "step" or "next", if a few lines of source are skipped between | |
1871 | the previous line and the current one, print those lines, not just the | |
1872 | last line of a multiline statement. | |
1873 | ||
7ae38352 | 1874 | -- |
c906108c SS |
1875 | |
1876 | Handling of "&" address-of operator needs some serious overhaul | |
1877 | for ANSI C and consistency on arrays and functions. | |
1878 | For "float point[15];": | |
1879 | ptype &point[4] ==> Attempt to take address of non-lvalue. | |
1880 | For "char *malloc();": | |
1881 | ptype malloc ==> "char *()"; should be same as | |
1882 | ptype &malloc ==> "char *(*)()" | |
1883 | call printf ("%x\n", malloc) ==> weird value, should be same as | |
1884 | call printf ("%x\n", &malloc) ==> correct value | |
1885 | ||
7ae38352 AC |
1886 | -- |
1887 | ||
c906108c SS |
1888 | Fix dbxread.c symbol reading in the presence of interrupts. It |
1889 | currently leaves a cleanup to blow away the entire symbol table when a | |
1890 | QUIT occurs. (What's wrong with that? -kingdon, 28 Oct 1993). | |
1891 | ||
7ae38352 AC |
1892 | [I suspect that the grype was that, on a slow system, you might want |
1893 | to cntrl-c and get just half the symbols and then load the rest later | |
1894 | - scary to be honest] | |
1895 | ||
1896 | -- | |
1897 | ||
c906108c SS |
1898 | Mipsread.c reads include files depth-first, because the dependencies |
1899 | in the psymtabs are way too inclusive (it seems to me). Figure out what | |
1900 | really depends on what, to avoid recursing 20 or 30 times while reading | |
1901 | real symtabs. | |
1902 | ||
7ae38352 AC |
1903 | -- |
1904 | ||
c906108c SS |
1905 | value_add() should be subtracting the lower bound of arrays, if known, |
1906 | and possibly checking against the upper bound for error reporting. | |
1907 | ||
7ae38352 | 1908 | -- |
c906108c SS |
1909 | |
1910 | When listing source lines, check for a preceding \n, to verify that | |
1911 | the file hasn't changed out from under us. | |
1912 | ||
7ae38352 AC |
1913 | [fixed by some other means I think. That hack wouldn't actually work |
1914 | reliably - the file might move such that another \n appears. ] | |
c906108c | 1915 | |
7ae38352 | 1916 | -- |
c906108c SS |
1917 | |
1918 | Get all the remote systems (where the protocol allows it) to be able to | |
1919 | stop the remote system when the GDB user types ^C (like remote.c | |
1920 | does). For ebmon, use ^Ak. | |
1921 | ||
7ae38352 AC |
1922 | -- |
1923 | ||
c906108c SS |
1924 | Possible feature: A version of the "disassemble" command which shows |
1925 | both source and assembly code ("set symbol-filename on" is a partial | |
1926 | solution). | |
1927 | ||
7ae38352 AC |
1928 | [has this been done? It was certainly done for MI and GDBtk] |
1929 | ||
1930 | -- | |
1931 | ||
c906108c SS |
1932 | investigate "x/s 0" (right now stops early) (I think maybe GDB is |
1933 | using a 0 address for bad purposes internally). | |
1934 | ||
7ae38352 AC |
1935 | -- |
1936 | ||
c906108c SS |
1937 | Make "info path" and path_command work again (but independent of the |
1938 | environment either of gdb or that we'll pass to the inferior). | |
1939 | ||
7ae38352 AC |
1940 | -- |
1941 | ||
c906108c SS |
1942 | Make GDB understand the GCC feature for putting octal constants in |
1943 | enums. Make it so overflow on an enum constant does not error_type | |
1944 | the whole type. Allow arbitrarily large enums with type attributes. | |
1945 | Put all this stuff in the testsuite. | |
1946 | ||
7ae38352 AC |
1947 | -- |
1948 | ||
c906108c SS |
1949 | Make TYPE_CODE_ERROR with a non-zero TYPE_LENGTH more useful (print |
1950 | the value in hex; process type attributes). Add this to the | |
1951 | testsuite. This way future compilers can add new types and old | |
1952 | versions of GDB can do something halfway reasonable. | |
1953 | ||
7ae38352 | 1954 | -- |
c906108c SS |
1955 | |
1956 | Fix mdebugread.c:parse_type to do fundamental types right (see | |
1957 | rs6000_builtin_type in stabsread.c for what "right" is--the point is | |
1958 | that the debug format fixes the sizes of these things and it shouldn't | |
1959 | depend on stuff like TARGET_PTR_BIT and so on. For mdebug, there seem | |
1960 | to be separate bt* codes for 64 bit and 32 bit things, and GDB should | |
1961 | be aware of that). Also use a switch statement for clarity and speed. | |
1962 | ||
7ae38352 AC |
1963 | -- |
1964 | ||
c906108c SS |
1965 | Investigate adding symbols in target_load--some targets do, some |
1966 | don't. | |
1967 | ||
7ae38352 AC |
1968 | -- |
1969 | ||
c906108c SS |
1970 | Put dirname in psymtabs and change lookup*symtab to use dirname (so |
1971 | /foo/bar.c works whether compiled by cc /foo/bar.c, or cd /foo; cc | |
1972 | bar.c). | |
1973 | ||
7ae38352 AC |
1974 | -- |
1975 | ||
c906108c SS |
1976 | Merge xcoffread.c and coffread.c. Use breakpoint_re_set instead of |
1977 | fixup_breakpoints. | |
1978 | ||
7ae38352 | 1979 | -- |
c906108c SS |
1980 | |
1981 | Make a watchpoint which contains a function call an error (it is | |
1982 | broken now, making it work is probably not worth the effort). | |
1983 | ||
7ae38352 | 1984 | -- |
c906108c SS |
1985 | |
1986 | New test case based on weird.exp but in which type numbers are not | |
1987 | renumbered (thus multiply defining a type). This currently causes an | |
1988 | infinite loop on "p v_comb". | |
1989 | ||
7ae38352 | 1990 | -- |
c906108c | 1991 | |
7ae38352 | 1992 | [Hey! Hint Hint Delete Delete!!!] |
c906108c SS |
1993 | |
1994 | Fix 386 floating point so that floating point registers are real | |
1995 | registers (but code can deal at run-time if they are missing, like | |
1996 | mips and 68k). This would clean up "info float" and related stuff. | |
1997 | ||
7ae38352 | 1998 | -- |
c906108c SS |
1999 | |
2000 | gcc -g -c enummask.c then gdb enummask.o, then "p v". GDB complains | |
2001 | about not being able to access memory location 0. | |
2002 | ||
2003 | -------------------- enummask.c | |
2004 | enum mask | |
2005 | { | |
2006 | ANIMAL = 0, | |
2007 | VEGETABLE = 1, | |
2008 | MINERAL = 2, | |
2009 | BASIC_CATEGORY = 3, | |
2010 | ||
2011 | WHITE = 0, | |
2012 | BLUE = 4, | |
2013 | GREEN = 8, | |
2014 | BLACK = 0xc, | |
2015 | COLOR = 0xc, | |
2016 | ||
2017 | ALIVE = 0x10, | |
2018 | ||
2019 | LARGE = 0x20 | |
2020 | } v; | |
2021 | ||
7ae38352 AC |
2022 | -- |
2023 | ||
c906108c SS |
2024 | If try to modify value in file with "set write off" should give |
2025 | appropriate error not "cannot access memory at address 0x65e0". | |
2026 | ||
7ae38352 | 2027 | -- |
c906108c | 2028 | |
c906108c SS |
2029 | Allow core file without exec file on RS/6000. |
2030 | ||
7ae38352 AC |
2031 | -- |
2032 | ||
c906108c SS |
2033 | Make sure "shell" with no arguments works right on DOS. |
2034 | ||
7ae38352 AC |
2035 | -- |
2036 | ||
c906108c SS |
2037 | Make gdb.ini (as well as .gdbinit) be checked on all platforms, so |
2038 | the same directory can be NFS-mounted on unix or DOS, and work the | |
2039 | same way. | |
2040 | ||
7ae38352 AC |
2041 | -- |
2042 | ||
2043 | [Is this another delete???] | |
c906108c SS |
2044 | |
2045 | Get SECT_OFF_TEXT stuff out of objfile_relocate (might be needed to | |
2046 | get RS/6000 to work right, might not be immediately relevant). | |
2047 | ||
7ae38352 | 2048 | -- |
c906108c SS |
2049 | |
2050 | Work out some kind of way to allow running the inferior to be done as | |
2051 | a sub-execution of, eg. breakpoint command lists. Currently running | |
2052 | the inferior interupts any command list execution. This would require | |
2053 | some rewriting of wait_for_inferior & friends, and hence should | |
2054 | probably be done in concert with the above. | |
2055 | ||
7ae38352 AC |
2056 | -- |
2057 | ||
c906108c SS |
2058 | Add function arguments to gdb user defined functions. |
2059 | ||
7ae38352 AC |
2060 | -- |
2061 | ||
c906108c SS |
2062 | Add convenience variables that refer to exec file, symbol file, |
2063 | selected frame source file, selected frame function, selected frame | |
2064 | line number, etc. | |
2065 | ||
7ae38352 AC |
2066 | -- |
2067 | ||
c906108c SS |
2068 | Modify the handling of symbols grouped through BINCL/EINCL stabs to |
2069 | allocate a partial symtab for each BINCL/EINCL grouping. This will | |
2070 | seriously decrease the size of inter-psymtab dependencies and hence | |
2071 | lessen the amount that needs to be read in when a new source file is | |
2072 | accessed. | |
2073 | ||
7ae38352 | 2074 | -- |
c906108c | 2075 | |
c906108c SS |
2076 | Add a command for searching memory, a la adb. It specifies size, |
2077 | mask, value, start address. ADB searches until it finds it or hits | |
2078 | an error (or is interrupted). | |
2079 | ||
7ae38352 AC |
2080 | -- |
2081 | ||
b83266a0 SS |
2082 | Remove the range and type checking code and documentation, if not |
2083 | going to implement. | |
2084 | ||
c906108c SS |
2085 | # Local Variables: |
2086 | # mode: text | |
2087 | # End: |