-
Notifications
You must be signed in to change notification settings - Fork 283
/
Copy pathgdb-10.2.patch
16323 lines (16085 loc) · 547 KB
/
gdb-10.2.patch
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
# When this file is updated in an existing source tree, it gets re-applied
# during the next build using "patch -N --fuzz=0", which ignores patches
# that have already been applied. However, if a gdb file has been modified
# multiple times, the subsequent patching may fail to recognize that a
# given patch has been previously applied, and will attempt to re-apply it.
# To prevent any unintended consequences, this file also acts as a
# shell script that can restore any gdb file to its original state prior
# to all subsequent patch applications.
tar xvzmf gdb-10.2.tar.gz \
gdb-10.2/gdb/symtab.c \
gdb-10.2/gdb/printcmd.c \
gdb-10.2/gdb/symfile.c \
gdb-10.2/gdb/Makefile.in \
gdb-10.2/gdb/dwarf2/read.c \
gdb-10.2/gdb/ada-lang.c \
gdb-10.2/gdb/objfiles.h \
gdb-10.2/bfd/elf-bfd.h \
gdb-10.2/gdb/stack.c \
gdb-10.2/gdb/ui-file.h
# For newly added gdb files, remove them to be its original state.
rm -f gdb-10.2/gdb/loongarch-linux-tdep.c
exit 0
--- gdb-10.2/Makefile.in.orig
+++ gdb-10.2/Makefile.in
@@ -340,6 +340,9 @@ AR_FOR_BUILD = @AR_FOR_BUILD@
AS_FOR_BUILD = @AS_FOR_BUILD@
CC_FOR_BUILD = @CC_FOR_BUILD@
CFLAGS_FOR_BUILD = @CFLAGS_FOR_BUILD@
+ifeq (${CRASH_TARGET}, PPC64)
+CFLAGS_FOR_BUILD += -m64 -fPIC
+endif
CXXFLAGS_FOR_BUILD = @CXXFLAGS_FOR_BUILD@
CXX_FOR_BUILD = @CXX_FOR_BUILD@
DLLTOOL_FOR_BUILD = @DLLTOOL_FOR_BUILD@
@@ -406,6 +409,9 @@ GNATBIND = @GNATBIND@
GNATMAKE = @GNATMAKE@
CFLAGS = @CFLAGS@
+ifeq (${CRASH_TARGET}, PPC64)
+CFLAGS += -m64 -fPIC
+endif
LDFLAGS = @LDFLAGS@
LIBCFLAGS = $(CFLAGS)
CXXFLAGS = @CXXFLAGS@
--- gdb-10.2/gdb/Makefile.in.orig
+++ gdb-10.2/gdb/Makefile.in
@@ -571,7 +571,7 @@ CONFIG_DEP_SUBDIR = $(addsuffix /$(DEPDIR),$(CONFIG_SRC_SUBDIR))
# It is also possible that you will need to add -I/usr/include/sys if
# your system doesn't have fcntl.h in /usr/include (which is where it
# should be according to Posix).
-DEFS = @DEFS@
+DEFS = -DCRASH_MERGE -D${CRASH_TARGET} @DEFS@
GDB_CFLAGS = -I. -I$(srcdir) -I$(srcdir)/config \
-DLOCALEDIR="\"$(localedir)\"" $(DEFS)
@@ -1135,6 +1135,7 @@ COMMON_SFILES = \
symmisc.c \
symtab.c \
target.c \
+ ../../crash_target.c \
target-connection.c \
target-dcache.c \
target-descriptions.c \
@@ -1564,7 +1565,7 @@ COMMON_OBS = $(DEPFILES) $(CONFIG_OBS) $(YYOBJ) \
$(SUBDIR_TARGET_OBS) \
$(SUBDIR_GCC_COMPILE_OBS)
-SUBDIRS = doc @subdirs@ data-directory
+SUBDIRS = build_no_subdirs
CLEANDIRS = $(SUBDIRS)
# List of subdirectories in the build tree that must exist.
@@ -1606,8 +1607,8 @@ generated_files = \
# Flags needed to compile Python code
PYTHON_CFLAGS = @PYTHON_CFLAGS@
-all: gdb$(EXEEXT) $(CONFIG_ALL) gdb-gdb.py gdb-gdb.gdb
- @$(MAKE) $(FLAGS_TO_PASS) DO=all "DODIRS=`echo $(SUBDIRS) | sed 's/testsuite//'`" subdir_do
+all: gdb$(EXEEXT) gdb-gdb.py gdb-gdb.gdb
+ @$(MAKE) -s $(FLAGS_TO_PASS) DO=all "DODIRS=`echo $(SUBDIRS) | sed 's/testsuite//'`" subdir_do
# Rule for compiling .c files in the top-level gdb directory.
# The order-only dependencies ensure that we create the build subdirectories.
@@ -1864,9 +1865,10 @@ libgdb.a: $(LIBGDB_OBS)
# Removing the old gdb first works better if it is running, at least on SunOS.
gdb$(EXEEXT): gdb.o $(LIBGDB_OBS) $(CDEPS) $(TDEPLIBS)
$(SILENCE) rm -f gdb$(EXEEXT)
+ @(cd ../..; make --no-print-directory GDB_FLAGS=-DGDB_10_2 library)
$(ECHO_CXXLD) $(CC_LD) $(INTERNAL_LDFLAGS) $(WIN32LDAPP) \
- -o gdb$(EXEEXT) gdb.o $(LIBGDB_OBS) \
- $(TDEPLIBS) $(TUI_LIBRARY) $(CLIBS) $(LOADLIBES)
+ -o $(shell /bin/cat mergeobj) $(LIBGDB_OBS) \
+ $(TDEPLIBS) $(TUI_LIBRARY) $(CLIBS) $(LOADLIBES) $(shell /bin/cat mergelibs)
ifneq ($(CODESIGN_CERT),)
$(ECHO_SIGN) $(CODESIGN) -s $(CODESIGN_CERT) gdb$(EXEEXT)
endif
@@ -2530,9 +2532,9 @@ ifeq ($(DEPMODE),depmode=gcc3)
# into place if the compile succeeds. We need this because gcc does
# not atomically write the dependency output file.
override COMPILE.post = -c -o $@ -MT $@ -MMD -MP \
- -MF $(@D)/$(DEPDIR)/$(basename $(@F)).Tpo
-override POSTCOMPILE = @mv $(@D)/$(DEPDIR)/$(basename $(@F)).Tpo \
- $(@D)/$(DEPDIR)/$(basename $(@F)).Po
+ -MF $(subst ../..,.,$(@D))/$(DEPDIR)/$(basename $(@F)).Tpo
+override POSTCOMPILE = @mv $(subst ../..,.,$(@D))/$(DEPDIR)/$(basename $(@F)).Tpo \
+ $(subst ../..,.,$(@D))/$(DEPDIR)/$(basename $(@F)).Po
else
override COMPILE.pre = source='$<' object='$@' libtool=no \
DEPDIR=$(DEPDIR) $(DEPMODE) $(depcomp) \
--- gdb-10.2/gdb/cli/cli-cmds.c.orig
+++ gdb-10.2/gdb/cli/cli-cmds.c
@@ -435,6 +435,11 @@ complete_command (const char *arg, int from_tty)
}
}
+#ifdef CRASH_MERGE
+static int crash_from_tty = 0;
+extern "C" void untrusted_file(FILE *, char *);
+#endif
+
int
is_complete_command (struct cmd_list_element *c)
{
@@ -654,8 +659,32 @@ find_and_open_script (const char *script_file, int search_path)
close (fd);
errno = save_errno;
}
- else
- opened.emplace (gdb_file_up (result), std::move (full_path));
+#ifdef CRASH_MERGE
+ /*
+ * Only allow trusted versions of .gdbinit files to be
+ * sourced during session initialization.
+ */
+ if (crash_from_tty == -1)
+ {
+ struct stat statbuf;
+ FILE *stream = result;
+ int _fd = fileno (stream);
+ if (fstat (_fd, &statbuf) < 0)
+ {
+ perror_with_name (full_path.get());
+ fclose (stream);
+ return opened;
+ }
+ if (statbuf.st_uid != getuid () || (statbuf.st_mode & S_IWOTH))
+ {
+ untrusted_file(NULL, full_path.get());
+ fclose (stream);
+ return opened;
+ }
+ }
+#endif
+ opened.emplace (gdb_file_up (result), std::move (full_path));
+
return opened;
}
@@ -719,7 +748,11 @@ source_script_with_search (const char *file, int from_tty, int search_path)
If the source command was invoked interactively, throw an
error. Otherwise (e.g. if it was invoked by a script),
just emit a warning, rather than cause an error. */
+#ifdef CRASH_MERGE
+ if (from_tty > 0)
+#else
if (from_tty)
+#endif
perror_with_name (file);
else
{
@@ -743,7 +776,14 @@ source_script_with_search (const char *file, int from_tty, int search_path)
void
source_script (const char *file, int from_tty)
{
+#ifdef CRASH_MERGE
+ crash_from_tty = from_tty;
+#endif
source_script_with_search (file, from_tty, 0);
+#ifdef CRASH_MERGE
+ crash_from_tty = 0;
+#endif
+
}
static void
--- gdb-10.2/gdb/defs.h.orig
+++ gdb-10.2/gdb/defs.h
@@ -629,4 +629,7 @@ DEF_ENUM_FLAGS_TYPE (enum user_selected_what_flag, user_selected_what);
#include "utils.h"
+#ifdef CRASH_MERGE
+extern "C" int gdb_main_entry(int, char **);
+#endif
#endif /* #ifndef DEFS_H */
--- gdb-10.2/gdb/dwarf2/read.c.orig
+++ gdb-10.2/gdb/dwarf2/read.c
@@ -3015,7 +3015,11 @@ read_gdb_index_from_buffer (const char *filename,
indices. */
if (version < 4)
{
+#ifdef CRASH_MERGE
+ static int warning_printed = 1;
+#else
static int warning_printed = 0;
+#endif
if (!warning_printed)
{
warning (_("Skipping obsolete .gdb_index section in %s."),
@@ -3034,7 +3038,11 @@ read_gdb_index_from_buffer (const char *filename,
"set use-deprecated-index-sections on". */
if (version < 6 && !deprecated_ok)
{
+#ifdef CRASH_MERGE
+ static int warning_printed = 1;
+#else
static int warning_printed = 0;
+#endif
if (!warning_printed)
{
warning (_("\
--- gdb-10.2/gdb/main.c.orig
+++ gdb-10.2/gdb/main.c
@@ -392,6 +392,14 @@ start_event_loop ()
return;
}
+#ifdef CRASH_MERGE
+extern "C" void update_gdb_hooks(void);
+extern "C" void main_loop(void);
+extern "C" unsigned long crash_get_kaslr_offset(void);
+extern "C" int console(const char *, ...);
+void crash_target_init (void);
+#endif
+
/* Call command_loop. */
/* Prevent inlining this function for the benefit of GDB's selftests
@@ -925,7 +933,11 @@ captured_main_1 (struct captured_main_args *context)
}
}
+#ifdef CRASH_MERGE
+ save_original_signals_state (1);
+#else
save_original_signals_state (quiet);
+#endif
/* Try to set up an alternate signal stack for SIGSEGV handlers. */
gdb::alternate_signal_stack signal_stack;
@@ -999,7 +1011,7 @@ captured_main_1 (struct captured_main_args *context)
{
print_gdb_version (gdb_stdout, false);
wrap_here ("");
- printf_filtered ("\n");
+ printf_filtered ("\n\n");
exit (0);
}
@@ -1038,6 +1050,10 @@ captured_main_1 (struct captured_main_args *context)
look at things by now. Initialize the default interpreter. */
set_top_level_interpreter (interpreter_p);
+#ifdef CRASH_MERGE
+ update_gdb_hooks();
+#endif
+
/* FIXME: cagney/2003-02-03: The big hack (part 2 of 2) that lets
GDB retain the old MI1 interpreter startup behavior. Output the
copyright message after the interpreter is installed when it is
@@ -1066,7 +1082,11 @@ captured_main_1 (struct captured_main_args *context)
if (!system_gdbinit.empty () && !inhibit_gdbinit)
{
for (const std::string &file : system_gdbinit)
+#ifdef CRASH_MERGE
+ ret = catch_command_errors (source_script, file.c_str (), -1);
+#else
ret = catch_command_errors (source_script, file.c_str (), 0);
+#endif
}
/* Read and execute $HOME/.gdbinit file, if it exists. This is done
@@ -1075,7 +1095,11 @@ captured_main_1 (struct captured_main_args *context)
debugging or what directory you are in. */
if (!home_gdbinit.empty () && !inhibit_gdbinit && !inhibit_home_gdbinit)
+#ifdef CRASH_MERGE
+ ret = catch_command_errors (source_script, home_gdbinit.c_str (), -1);
+#else
ret = catch_command_errors (source_script, home_gdbinit.c_str (), 0);
+#endif
/* Process '-ix' and '-iex' options early. */
for (i = 0; i < cmdarg_vec.size (); i++)
@@ -1121,7 +1145,11 @@ captured_main_1 (struct captured_main_args *context)
!batch_flag);
if (ret != 0)
ret = catch_command_errors (symbol_file_add_main_adapter,
+#ifdef CRASH_MERGE
+ symarg, 0);
+#else
symarg, !batch_flag);
+#endif
}
else
{
@@ -1191,7 +1219,11 @@ captured_main_1 (struct captured_main_args *context)
{
auto_load_local_gdbinit_loaded = 1;
+#ifdef CRASH_MERGE
+ ret = catch_command_errors (source_script, local_gdbinit.c_str (), -1);
+#else
ret = catch_command_errors (source_script, local_gdbinit.c_str (), 0);
+#endif
}
}
@@ -1242,6 +1274,16 @@ captured_main (void *data)
captured_main_1 (context);
+#ifdef CRASH_MERGE
+ /* Relocate the vmlinux. */
+ objfile_rebase (symfile_objfile, crash_get_kaslr_offset());
+
+ crash_target_init();
+
+ /* Back to crash. */
+ main_loop();
+#endif
+
/* NOTE: cagney/1999-11-07: There is probably no reason for not
moving this loop and the code found in captured_command_loop()
into the command_loop() proper. The main thing holding back that
@@ -1256,6 +1298,9 @@ captured_main (void *data)
{
exception_print (gdb_stderr, ex);
}
+#ifdef CRASH_MERGE
+ console("<CAPTURED_MAIN WHILE LOOP>\n");
+#endif
}
/* No exit -- exit is through quit_command. */
}
@@ -1277,6 +1322,22 @@ gdb_main (struct captured_main_args *args)
return 1;
}
+#ifdef CRASH_MERGE
+/*
+ * NOTE: adapted from gdb.c, which is no longer built in; changed name of
+ * original main() to gdb_main_entry() for use as crash entry point
+ */
+int
+gdb_main_entry (int argc, char **argv)
+{
+ struct captured_main_args args;
+ memset (&args, 0, sizeof args);
+ args.argc = argc;
+ args.argv = argv;
+ args.interpreter_p = INTERP_CONSOLE;
+ return gdb_main (&args);
+}
+#endif
/* Don't use *_filtered for printing help. We don't want to prompt
for continue no matter how small the screen or how much we're going
--- gdb-10.2/gdb/objfiles.h.orig
+++ gdb-10.2/gdb/objfiles.h
@@ -747,9 +747,9 @@ extern int objfile_has_full_symbols (struct objfile *objfile);
extern int objfile_has_symbols (struct objfile *objfile);
-extern int have_partial_symbols (void);
+extern "C" int have_partial_symbols (void);
-extern int have_full_symbols (void);
+extern "C" int have_full_symbols (void);
extern void objfile_set_sym_fns (struct objfile *objfile,
const struct sym_fns *sf);
--- gdb-10.2/gdb/printcmd.c.orig
+++ gdb-10.2/gdb/printcmd.c
@@ -524,6 +524,9 @@ set_next_address (struct gdbarch *gdbarch, CORE_ADDR addr)
form. However note that DO_DEMANGLE can be overridden by the specific
settings of the demangle and asm_demangle variables. Returns
non-zero if anything was printed; zero otherwise. */
+#ifdef CRASH_MERGE
+extern "C" int gdb_print_callback(unsigned long);
+#endif
int
print_address_symbolic (struct gdbarch *gdbarch, CORE_ADDR addr,
@@ -535,6 +538,12 @@ print_address_symbolic (struct gdbarch *gdbarch, CORE_ADDR addr,
int offset = 0;
int line = 0;
+#ifdef CRASH_MERGE
+ if (!gdb_print_callback(addr)) {
+ return 0;
+ }
+#endif
+
if (build_address_symbolic (gdbarch, addr, do_demangle, false, &name,
&offset, &filename, &line, &unmapped))
return 0;
@@ -1221,6 +1230,43 @@ print_command_1 (const char *args, int voidprint)
print_value (val, print_opts);
}
+static void
+print_command_2 (const char *args, int voidprint)
+{
+ struct value *val;
+ value_print_options print_opts;
+
+ get_user_print_options (&print_opts);
+ /* Override global settings with explicit options, if any. */
+ auto group = make_value_print_options_def_group (&print_opts);
+ gdb::option::process_options
+ (&args, gdb::option::PROCESS_OPTIONS_REQUIRE_DELIMITER, group);
+
+ print_command_parse_format (&args, "print", &print_opts);
+
+ const char *exp = args;
+
+ if (exp != nullptr && *exp)
+ {
+ expression_up expr = parse_expression (exp);
+ val = evaluate_expression (expr.get ());
+ }
+ else
+ val = access_value_history (0);
+
+ printf_filtered ("%d %d %ld %ld %ld %ld\n",
+ check_typedef(value_type (val))->code(),
+ TYPE_UNSIGNED (check_typedef(value_type (val))),
+ TYPE_LENGTH (check_typedef(value_type(val))),
+ value_offset (val), value_bitpos (val), value_bitsize(val));
+}
+
+static void
+printm_command (const char *exp, int from_tty)
+{
+ print_command_2 (exp, 1);
+}
+
/* See valprint.h. */
void
@@ -2855,6 +2901,12 @@ but no count or size letter (see \"x\" command)."),
c = add_com ("print", class_vars, print_command, print_help.c_str ());
set_cmd_completer_handle_brkchars (c, print_command_completer);
add_com_alias ("p", "print", class_vars, 1);
+
+ c = add_com ("printm", class_vars, printm_command, _("\
+Similar to \"print\" command, but it used to print the type, size, offset,\n\
+bitpos and bitsize of the expression EXP."));
+ set_cmd_completer (c, expression_completer);
+
add_com_alias ("inspect", "print", class_vars, 1);
add_setshow_uinteger_cmd ("max-symbolic-offset", no_class,
--- gdb-10.2/gdb/psymtab.c.orig
+++ gdb-10.2/gdb/psymtab.c
@@ -283,6 +283,9 @@ find_pc_sect_psymtab_closer (struct objfile *objfile,
return best_pst;
}
+#ifdef CRASH_MERGE
+ extern "C" int gdb_line_number_callback(unsigned long, unsigned long, unsigned long);
+#endif
/* Find which partial symtab contains PC and SECTION. Return NULL if
none. We return the psymtab that contains a symbol whose address
exactly matches PC, or, if we cannot find an exact match, the
@@ -363,7 +366,12 @@ find_pc_sect_psymtab (struct objfile *objfile, CORE_ADDR pc,
best_pst = find_pc_sect_psymtab_closer (objfile, pc, section, pst,
msymbol);
+#ifdef CRASH_MERGE
+ if ((best_pst != NULL) &&
+ gdb_line_number_callback(pc, pst->text_low (objfile), pst->text_high (objfile)))
+#else
if (best_pst != NULL)
+#endif
return best_pst;
}
--- gdb-10.2/gdb/symfile.c.orig
+++ gdb-10.2/gdb/symfile.c
@@ -652,7 +652,26 @@ default_symfile_offsets (struct objfile *objfile,
for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next)
/* We do not expect this to happen; just skip this step if the
relocatable file has a section with an assigned VMA. */
- if (bfd_section_vma (cur_sec) != 0)
+ if (bfd_section_vma (cur_sec) != 0
+ /*
+ * Kernel modules may have some non-zero VMAs, i.e., like the
+ * __ksymtab and __ksymtab_gpl sections in this example:
+ *
+ * Section Headers:
+ * [Nr] Name Type Address Offset
+ * Size EntSize Flags Link Info Align
+ * ...
+ * [ 8] __ksymtab PROGBITS 0000000000000060 0000ad90
+ * 0000000000000010 0000000000000000 A 0 0 16
+ * [ 9] .rela__ksymtab RELA 0000000000000000 0000ada0
+ * 0000000000000030 0000000000000018 43 8 8
+ * [10] __ksymtab_gpl PROGBITS 0000000000000070 0000add0
+ * 00000000000001a0 0000000000000000 A 0 0 16
+ * ...
+ *
+ * but they should be treated as if they are NULL.
+ */
+ && strncmp (bfd_section_name (cur_sec), "__k", 3) != 0)
break;
if (cur_sec == NULL)
@@ -1083,6 +1102,12 @@ symbol_file_add_with_addrs (bfd *abfd, const char *name,
if (mainline)
flags |= OBJF_MAINLINE;
objfile = objfile::make (abfd, name, flags, parent);
+#ifdef CRASH_MERGE
+ if (add_flags & SYMFILE_MAINLINE) {
+ extern struct objfile *gdb_kernel_objfile;
+ gdb_kernel_objfile = objfile;
+ }
+#endif
/* We either created a new mapped symbol table, mapped an existing
symbol table file which has not had initial symbol reading
@@ -1375,6 +1400,10 @@ show_debug_file_directory (struct ui_file *file, int from_tty,
#if ! defined (DEBUG_SUBDIRECTORY)
#define DEBUG_SUBDIRECTORY ".debug"
#endif
+#ifdef CRASH_MERGE
+extern "C" int check_specified_module_tree(const char *, const char *);
+extern "C" char *check_specified_kernel_debug_file();
+#endif
/* Find a separate debuginfo file for OBJFILE, using DIR as the directory
where the original file resides (may not be the same as
@@ -1410,6 +1439,15 @@ find_separate_debug_file (const char *dir,
if (separate_debug_file_exists (debugfile, crc32, objfile))
return debugfile;
+#ifdef CRASH_MERGE
+{
+ if (check_specified_module_tree(objfile_name (objfile), debugfile.c_str()) &&
+ separate_debug_file_exists(debugfile, crc32, objfile)) {
+ return debugfile;
+ }
+}
+#endif
+
/* Then try in the global debugfile directories.
Keep backward compatibility so that DEBUG_FILE_DIRECTORY being "" will
@@ -1568,6 +1606,14 @@ find_separate_debug_file_by_debuglink (struct objfile *objfile)
}
}
+#ifdef CRASH_MERGE
+ if (debugfile.empty ()) {
+ char *name_copy;
+ name_copy = check_specified_kernel_debug_file();
+ return std::string (name_copy);
+ }
+#endif
+
return debugfile;
}
@@ -2334,8 +2380,10 @@ add_symbol_file_command (const char *args, int from_tty)
else if (section_addrs.empty ())
printf_unfiltered ("\n");
+#ifndef CRASH_MERGE
if (from_tty && (!query ("%s", "")))
error (_("Not confirmed."));
+#endif
objf = symbol_file_add (filename.get (), add_flags, §ion_addrs,
flags);
@@ -3622,6 +3670,15 @@ bfd_byte *
symfile_relocate_debug_section (struct objfile *objfile,
asection *sectp, bfd_byte *buf)
{
+#ifdef CRASH_MERGE
+ /* Executable files have all the relocations already resolved.
+ * Handle files linked with --emit-relocs.
+ * http://sources.redhat.com/ml/gdb/2006-08/msg00137.html
+ */
+ bfd *abfd = objfile->obfd;
+ if ((abfd->flags & EXEC_P) != 0)
+ return NULL;
+#endif
gdb_assert (objfile->sf->sym_relocate);
return (*objfile->sf->sym_relocate) (objfile, sectp, buf);
--- gdb-10.2/gdb/symtab.c.orig
+++ gdb-10.2/gdb/symtab.c
@@ -1870,27 +1870,46 @@ search_name_hash (enum language language, const char *search_name)
variable and thus can probably assume it will never hit the C++
code). */
+#ifdef CRASH_MERGE
+static void gdb_bait_and_switch(char *, struct symbol *);
+#endif
+
struct block_symbol
lookup_symbol_in_language (const char *name, const struct block *block,
const domain_enum domain, enum language lang,
struct field_of_this_result *is_a_field_of_this)
{
+ struct block_symbol result;
demangle_result_storage storage;
const char *modified_name = demangle_for_lookup (name, lang, storage);
- return lookup_symbol_aux (modified_name,
+ result = lookup_symbol_aux (modified_name,
symbol_name_match_type::FULL,
block, domain, lang,
is_a_field_of_this);
+#ifdef CRASH_MERGE
+ if (result.symbol && (domain == VAR_DOMAIN))
+ gdb_bait_and_switch((char *)modified_name, result.symbol);
+#endif
+ return result;
}
/* See symtab.h. */
+#ifdef CRASH_MERGE
+static const struct block *gdb_get_crash_block(void);
+#endif
+
struct block_symbol
lookup_symbol (const char *name, const struct block *block,
domain_enum domain,
struct field_of_this_result *is_a_field_of_this)
{
+#ifdef CRASH_MERGE
+ if (!block)
+ block = gdb_get_crash_block();
+#endif
+
return lookup_symbol_in_language (name, block, domain,
current_language->la_language,
is_a_field_of_this);
@@ -6886,3 +6905,806 @@ If zero then the symbol cache is disabled."),
gdb::observers::new_objfile.attach (symtab_new_objfile_observer);
gdb::observers::free_objfile.attach (symtab_free_objfile_observer);
}
+
+#ifdef CRASH_MERGE
+#include "gdb-stabs.h"
+#include "gdbsupport/version.h"
+#define GDB_COMMON
+#include "../../defs.h"
+
+static void get_member_data(struct gnu_request *, struct type *, long, int);
+static void dump_enum(struct type *, struct gnu_request *);
+static void eval_enum(struct type *, struct gnu_request *);
+static void gdb_get_line_number(struct gnu_request *);
+static void gdb_get_datatype(struct gnu_request *);
+static void gdb_get_symbol_type(struct gnu_request *);
+static void gdb_command_exists(struct gnu_request *);
+static void gdb_debug_command(struct gnu_request *);
+static void gdb_function_numargs(struct gnu_request *);
+static void gdb_add_symbol_file(struct gnu_request *);
+static void gdb_delete_symbol_file(struct gnu_request *);
+static void gdb_patch_symbol_values(struct gnu_request *);
+static void get_user_print_option_address(struct gnu_request *);
+extern int get_frame_offset(CORE_ADDR);
+static void gdb_set_crash_block(struct gnu_request *);
+extern "C" void gdb_command_funnel(struct gnu_request *);
+void gdb_command_funnel_1(struct gnu_request *);
+static long lookup_struct_contents(struct gnu_request *);
+static void iterate_datatypes(struct gnu_request *);
+
+struct objfile *gdb_kernel_objfile = { 0 };
+
+static ulong gdb_merge_flags = 0;
+#define KERNEL_SYMBOLS_PATCHED (0x1)
+
+#undef STREQ
+#define STREQ(A, B) (A && B && (strcmp(A, B) == 0))
+#define TYPE_CODE(t) (t->code ())
+#define TYPE_TAG_NAME(t) (TYPE_MAIN_TYPE(t)->name)
+#define TYPE_NFIELDS(t) (t->num_fields ())
+#define TYPE_NAME(t) (t->name ())
+
+/*
+ * All commands from above come through here.
+ */
+void
+gdb_command_funnel(struct gnu_request *req)
+{
+ try {
+ gdb_command_funnel_1(req);
+ } catch (const gdb_exception &ex) {
+ if (req->flags & GNU_RETURN_ON_ERROR)
+ req->flags |= GNU_COMMAND_FAILED;
+ else
+ throw ex;
+ }
+}
+
+void
+gdb_command_funnel_1(struct gnu_request *req)
+{
+ struct symbol *sym;
+
+ if (req->command != GNU_VERSION && req->command != GNU_USER_PRINT_OPTION) {
+ (dynamic_cast<stdio_file *>gdb_stdout)->set_stream(req->fp);
+ (dynamic_cast<stdio_file *>gdb_stderr)->set_stream(req->fp);
+ }
+
+ switch (req->command)
+ {
+ case GNU_VERSION:
+ req->buf = (char *)version;
+ break;
+
+ case GNU_PASS_THROUGH:
+ execute_command(req->buf,
+ req->flags & GNU_FROM_TTY_OFF ? FALSE : TRUE);
+ break;
+
+ case GNU_USER_PRINT_OPTION:
+ get_user_print_option_address(req);
+ break;
+
+ case GNU_RESOLVE_TEXT_ADDR:
+ sym = find_pc_function(req->addr);
+ if (!sym || TYPE_CODE(sym->type) != TYPE_CODE_FUNC)
+ req->flags |= GNU_COMMAND_FAILED;
+ break;
+
+ case GNU_DISASSEMBLE:
+ if (req->addr2)
+ sprintf(req->buf, "disassemble 0x%lx 0x%lx",
+ req->addr, req->addr2);
+ else
+ sprintf(req->buf, "disassemble 0x%lx", req->addr);
+ execute_command(req->buf, TRUE);
+ break;
+
+ case GNU_ADD_SYMBOL_FILE:
+ gdb_add_symbol_file(req);
+ break;
+
+ case GNU_DELETE_SYMBOL_FILE:
+ gdb_delete_symbol_file(req);
+ break;
+
+ case GNU_GET_LINE_NUMBER:
+ gdb_get_line_number(req);
+ break;
+
+ case GNU_GET_DATATYPE:
+ gdb_get_datatype(req);
+ break;
+
+ case GNU_GET_SYMBOL_TYPE:
+ gdb_get_symbol_type(req);
+ break;
+
+ case GNU_COMMAND_EXISTS:
+ gdb_command_exists(req);
+ break;
+
+ case GNU_ALPHA_FRAME_OFFSET:
+ req->value = 0;
+ break;
+
+ case GNU_FUNCTION_NUMARGS:
+ gdb_function_numargs(req);
+ break;
+
+ case GNU_DEBUG_COMMAND:
+ gdb_debug_command(req);
+ break;
+
+ case GNU_PATCH_SYMBOL_VALUES:
+ gdb_patch_symbol_values(req);
+ break;
+
+ case GNU_SET_CRASH_BLOCK:
+ gdb_set_crash_block(req);
+ break;
+
+ case GNU_GET_FUNCTION_RANGE:
+ {
+ CORE_ADDR start, end;
+ if (!find_pc_partial_function(req->pc, NULL, &start, &end))
+ req->flags |= GNU_COMMAND_FAILED;
+ else {
+ req->addr = (ulong)start;
+ req->addr2 = (ulong)end;
+ }
+ }
+ break;
+
+ case GNU_LOOKUP_STRUCT_CONTENTS:
+ req->value = lookup_struct_contents(req);
+ break;
+
+ case GNU_ITERATE_DATATYPES:
+ iterate_datatypes(req);
+ break;
+
+ default:
+ req->flags |= GNU_COMMAND_FAILED;
+ break;
+ }
+}
+
+/*
+ * Given a PC value, return the file and line number.
+ */
+static void
+gdb_get_line_number(struct gnu_request *req)
+{
+ struct symtab_and_line sal;
+ struct objfile *objfile;
+ CORE_ADDR pc;
+
+#define LASTCHAR(s) (s[strlen(s)-1])
+
+ /*
+ * Prime the addrmap pump.
+ */
+ pc = req->addr;
+
+ sal = find_pc_line(pc, 0);
+
+ if (!sal.symtab) {
+ /*
+ * If a module address line number can't be found, it's typically
+ * due to its addrmap still containing offset values because its
+ * objfile doesn't have full symbols loaded.
+ */
+ if (req->lm) {
+ objfile = req->lm->loaded_objfile;
+ if (!objfile_has_full_symbols(objfile) && objfile->sf) {
+ objfile->sf->qf->expand_all_symtabs(objfile);
+ sal = find_pc_line(pc, 0);
+ }
+ }
+ if (!sal.symtab) {
+ req->buf[0] = '\0';
+ return;
+ }
+ }
+
+ if (sal.symtab->filename && SYMTAB_DIRNAME(sal.symtab)) {
+ if (sal.symtab->filename[0] == '/')
+ sprintf(req->buf, "%s: %d",
+ sal.symtab->filename, sal.line);
+ else
+ sprintf(req->buf, "%s%s%s: %d",
+ SYMTAB_DIRNAME(sal.symtab),
+ LASTCHAR(SYMTAB_DIRNAME(sal.symtab)) == '/' ? "" : "/",
+ sal.symtab->filename, sal.line);
+ }
+}
+
+
+/*
+ * General purpose routine for determining datatypes.
+ */
+
+static void
+gdb_get_datatype(struct gnu_request *req)
+{
+ register struct type *type;
+ register struct type *typedef_type;
+ expression_up expr;
+ struct symbol *sym;
+ struct value *val;
+
+ if (gdb_CRASHDEBUG(2))
+ console("gdb_get_datatype [%s] (a)\n", req->name);
+
+ req->typecode = TYPE_CODE_UNDEF;
+
+ /*
+ * lookup_symbol() will pick up struct and union names.
+ */
+ sym = lookup_symbol(req->name, 0, STRUCT_DOMAIN, 0).symbol;
+ if (sym) {
+ req->typecode = TYPE_CODE(sym->type);
+ req->length = TYPE_LENGTH(sym->type);
+ if (req->member)
+ get_member_data(req, sym->type, 0, 1);
+
+ if (TYPE_CODE(sym->type) == TYPE_CODE_ENUM) {
+ if (req->flags & GNU_PRINT_ENUMERATORS)
+ dump_enum(sym->type, req);
+ }
+
+ return;
+ }
+
+ /*
+ * Otherwise parse the expression.
+ */
+ if (gdb_CRASHDEBUG(2))
+ console("gdb_get_datatype [%s] (b)\n", req->name);
+
+ expr = parse_expression(req->name);
+
+
+ switch (expr.get()->elts[0].opcode)
+ {
+ case OP_VAR_VALUE:
+ if (gdb_CRASHDEBUG(2))
+ console("expr->elts[0].opcode: OP_VAR_VALUE\n");
+ type = expr.get()->elts[2].symbol->type;
+ if (req->flags & GNU_VAR_LENGTH_TYPECODE) {
+ req->typecode = TYPE_CODE(type);
+ req->length = TYPE_LENGTH(type);
+ }
+ if (TYPE_CODE(type) == TYPE_CODE_ENUM) {
+ req->typecode = TYPE_CODE(type);
+ req->value = SYMBOL_VALUE(expr.get()->elts[2].symbol);
+ req->tagname = (char *)TYPE_TAG_NAME(type);
+ if (!req->tagname) {
+ val = evaluate_type(expr.get());
+ eval_enum(value_type(val), req);
+ }
+ }
+ break;
+
+ case OP_TYPE:
+ if (gdb_CRASHDEBUG(2))
+ console("expr->elts[0].opcode: OP_TYPE\n");
+ type = expr.get()->elts[1].type;
+
+ req->typecode = TYPE_CODE(type);
+ req->length = TYPE_LENGTH(type);
+
+ if (TYPE_CODE(type) == TYPE_CODE_TYPEDEF) {
+ req->is_typedef = TYPE_CODE_TYPEDEF;
+ if ((typedef_type = check_typedef(type))) {
+ req->typecode = TYPE_CODE(typedef_type);
+ req->length = TYPE_LENGTH(typedef_type);
+ type = typedef_type;
+ }
+ }
+
+ if (TYPE_CODE(type) == TYPE_CODE_ENUM) {
+ if (req->is_typedef)
+ if (req->flags & GNU_PRINT_ENUMERATORS) {
+ if (req->is_typedef)
+ fprintf_filtered(gdb_stdout,
+ "typedef ");
+ dump_enum(type, req);
+ }
+ }
+
+ if (req->member)
+ get_member_data(req, type, 0, 1);
+
+ break;
+
+ default:
+ if (gdb_CRASHDEBUG(2))
+ console("expr.get()->elts[0].opcode: %d (?)\n",
+ expr.get()->elts[0].opcode);
+ break;
+
+ }
+}
+
+/*
+ * More robust enum list dump that gdb's, showing the value of each
+ * identifier, each on its own line.
+ */
+static void
+dump_enum(struct type *type, struct gnu_request *req)
+{
+ register int i;
+ int len;
+ long long lastval;
+
+ len = TYPE_NFIELDS (type);
+ lastval = 0;
+ if (TYPE_TAG_NAME(type))
+ fprintf_filtered(gdb_stdout,
+ "enum %s {\n", TYPE_TAG_NAME (type));