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70f80edf | 1 | /* OS ABI variant handling for GDB. |
4be87837 | 2 | Copyright 2001, 2002, 2003 Free Software Foundation, Inc. |
70f80edf JT |
3 | |
4 | This file is part of GDB. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; if not, write to the Free Software | |
18 | Foundation, Inc., 59 Temple Place - Suite 330, | |
19 | Boston, MA 02111-1307, USA. */ | |
20 | ||
21 | #include "defs.h" | |
05816f70 MK |
22 | |
23 | #include "gdb_assert.h" | |
309367d4 | 24 | #include "gdb_string.h" |
05816f70 | 25 | |
70f80edf | 26 | #include "osabi.h" |
b00a8037 DJ |
27 | #include "arch-utils.h" |
28 | #include "gdbcmd.h" | |
29 | #include "command.h" | |
70f80edf JT |
30 | |
31 | #include "elf-bfd.h" | |
32 | ||
b00a8037 DJ |
33 | #ifndef GDB_OSABI_DEFAULT |
34 | #define GDB_OSABI_DEFAULT GDB_OSABI_UNKNOWN | |
35 | #endif | |
36 | ||
37 | /* State for the "set osabi" command. */ | |
38 | static enum { osabi_auto, osabi_default, osabi_user } user_osabi_state; | |
39 | static enum gdb_osabi user_selected_osabi; | |
40 | static const char *gdb_osabi_available_names[GDB_OSABI_INVALID + 3] = { | |
41 | "auto", | |
42 | "default", | |
43 | "none", | |
44 | NULL | |
45 | }; | |
46 | static const char *set_osabi_string; | |
70f80edf JT |
47 | |
48 | /* This table matches the indices assigned to enum gdb_osabi. Keep | |
49 | them in sync. */ | |
50 | static const char * const gdb_osabi_names[] = | |
51 | { | |
b00a8037 | 52 | "none", |
70f80edf JT |
53 | |
54 | "SVR4", | |
55 | "GNU/Hurd", | |
56 | "Solaris", | |
57 | "OSF/1", | |
58 | "GNU/Linux", | |
59 | "FreeBSD a.out", | |
60 | "FreeBSD ELF", | |
61 | "NetBSD a.out", | |
62 | "NetBSD ELF", | |
63 | "Windows CE", | |
1029b7fa MK |
64 | "DJGPP", |
65 | "NetWare", | |
b96d0a4e | 66 | "Irix", |
daa66587 | 67 | "LynxOS", |
e64f66d1 | 68 | "Interix", |
a09a320d JB |
69 | "HP/UX ELF", |
70 | "HP/UX SOM", | |
70f80edf JT |
71 | |
72 | "ARM EABI v1", | |
73 | "ARM EABI v2", | |
74 | "ARM APCS", | |
75 | ||
76 | "<invalid>" | |
77 | }; | |
78 | ||
79 | const char * | |
80 | gdbarch_osabi_name (enum gdb_osabi osabi) | |
81 | { | |
82 | if (osabi >= GDB_OSABI_UNKNOWN && osabi < GDB_OSABI_INVALID) | |
83 | return gdb_osabi_names[osabi]; | |
84 | ||
85 | return gdb_osabi_names[GDB_OSABI_INVALID]; | |
86 | } | |
87 | ||
88 | /* Handler for a given architecture/OS ABI pair. There should be only | |
89 | one handler for a given OS ABI each architecture family. */ | |
90 | struct gdb_osabi_handler | |
91 | { | |
92 | struct gdb_osabi_handler *next; | |
05816f70 | 93 | const struct bfd_arch_info *arch_info; |
70f80edf JT |
94 | enum gdb_osabi osabi; |
95 | void (*init_osabi)(struct gdbarch_info, struct gdbarch *); | |
96 | }; | |
97 | ||
98 | static struct gdb_osabi_handler *gdb_osabi_handler_list; | |
99 | ||
100 | void | |
05816f70 MK |
101 | gdbarch_register_osabi (enum bfd_architecture arch, unsigned long machine, |
102 | enum gdb_osabi osabi, | |
70f80edf JT |
103 | void (*init_osabi)(struct gdbarch_info, |
104 | struct gdbarch *)) | |
105 | { | |
106 | struct gdb_osabi_handler **handler_p; | |
05816f70 | 107 | const struct bfd_arch_info *arch_info = bfd_lookup_arch (arch, machine); |
b00a8037 | 108 | const char **name_ptr; |
70f80edf JT |
109 | |
110 | /* Registering an OS ABI handler for "unknown" is not allowed. */ | |
111 | if (osabi == GDB_OSABI_UNKNOWN) | |
112 | { | |
113 | internal_error | |
114 | (__FILE__, __LINE__, | |
115 | "gdbarch_register_osabi: An attempt to register a handler for " | |
116 | "OS ABI \"%s\" for architecture %s was made. The handler will " | |
117 | "not be registered", | |
118 | gdbarch_osabi_name (osabi), | |
05816f70 | 119 | bfd_printable_arch_mach (arch, machine)); |
70f80edf JT |
120 | return; |
121 | } | |
122 | ||
05816f70 MK |
123 | gdb_assert (arch_info); |
124 | ||
70f80edf JT |
125 | for (handler_p = &gdb_osabi_handler_list; *handler_p != NULL; |
126 | handler_p = &(*handler_p)->next) | |
127 | { | |
05816f70 | 128 | if ((*handler_p)->arch_info == arch_info |
70f80edf JT |
129 | && (*handler_p)->osabi == osabi) |
130 | { | |
131 | internal_error | |
132 | (__FILE__, __LINE__, | |
133 | "gdbarch_register_osabi: A handler for OS ABI \"%s\" " | |
134 | "has already been registered for architecture %s", | |
135 | gdbarch_osabi_name (osabi), | |
05816f70 | 136 | arch_info->printable_name); |
70f80edf JT |
137 | /* If user wants to continue, override previous definition. */ |
138 | (*handler_p)->init_osabi = init_osabi; | |
139 | return; | |
140 | } | |
141 | } | |
142 | ||
143 | (*handler_p) | |
144 | = (struct gdb_osabi_handler *) xmalloc (sizeof (struct gdb_osabi_handler)); | |
145 | (*handler_p)->next = NULL; | |
05816f70 | 146 | (*handler_p)->arch_info = arch_info; |
70f80edf JT |
147 | (*handler_p)->osabi = osabi; |
148 | (*handler_p)->init_osabi = init_osabi; | |
b00a8037 DJ |
149 | |
150 | /* Add this OS ABI to the list of enum values for "set osabi", if it isn't | |
151 | already there. */ | |
152 | for (name_ptr = gdb_osabi_available_names; *name_ptr; name_ptr ++) | |
153 | { | |
154 | if (*name_ptr == gdbarch_osabi_name (osabi)) | |
155 | return; | |
156 | } | |
157 | *name_ptr++ = gdbarch_osabi_name (osabi); | |
158 | *name_ptr = NULL; | |
70f80edf JT |
159 | } |
160 | \f | |
161 | ||
162 | /* Sniffer to find the OS ABI for a given file's architecture and flavour. | |
163 | It is legal to have multiple sniffers for each arch/flavour pair, to | |
164 | disambiguate one OS's a.out from another, for example. The first sniffer | |
165 | to return something other than GDB_OSABI_UNKNOWN wins, so a sniffer should | |
166 | be careful to claim a file only if it knows for sure what it is. */ | |
167 | struct gdb_osabi_sniffer | |
168 | { | |
169 | struct gdb_osabi_sniffer *next; | |
170 | enum bfd_architecture arch; /* bfd_arch_unknown == wildcard */ | |
171 | enum bfd_flavour flavour; | |
172 | enum gdb_osabi (*sniffer)(bfd *); | |
173 | }; | |
174 | ||
175 | static struct gdb_osabi_sniffer *gdb_osabi_sniffer_list; | |
176 | ||
177 | void | |
178 | gdbarch_register_osabi_sniffer (enum bfd_architecture arch, | |
179 | enum bfd_flavour flavour, | |
180 | enum gdb_osabi (*sniffer_fn)(bfd *)) | |
181 | { | |
182 | struct gdb_osabi_sniffer *sniffer; | |
183 | ||
184 | sniffer = | |
185 | (struct gdb_osabi_sniffer *) xmalloc (sizeof (struct gdb_osabi_sniffer)); | |
186 | sniffer->arch = arch; | |
187 | sniffer->flavour = flavour; | |
188 | sniffer->sniffer = sniffer_fn; | |
189 | ||
190 | sniffer->next = gdb_osabi_sniffer_list; | |
191 | gdb_osabi_sniffer_list = sniffer; | |
192 | } | |
193 | \f | |
194 | ||
195 | enum gdb_osabi | |
196 | gdbarch_lookup_osabi (bfd *abfd) | |
197 | { | |
198 | struct gdb_osabi_sniffer *sniffer; | |
199 | enum gdb_osabi osabi, match; | |
200 | int match_specific; | |
201 | ||
b00a8037 DJ |
202 | /* If we aren't in "auto" mode, return the specified OS ABI. */ |
203 | if (user_osabi_state == osabi_user) | |
204 | return user_selected_osabi; | |
205 | ||
206 | /* If we don't have a binary, return the default OS ABI (if set) or | |
207 | an inconclusive result (otherwise). */ | |
208 | if (abfd == NULL) | |
209 | { | |
210 | if (GDB_OSABI_DEFAULT != GDB_OSABI_UNKNOWN) | |
211 | return GDB_OSABI_DEFAULT; | |
212 | else | |
213 | return GDB_OSABI_UNINITIALIZED; | |
214 | } | |
4be87837 | 215 | |
70f80edf JT |
216 | match = GDB_OSABI_UNKNOWN; |
217 | match_specific = 0; | |
218 | ||
219 | for (sniffer = gdb_osabi_sniffer_list; sniffer != NULL; | |
220 | sniffer = sniffer->next) | |
221 | { | |
222 | if ((sniffer->arch == bfd_arch_unknown /* wildcard */ | |
223 | || sniffer->arch == bfd_get_arch (abfd)) | |
224 | && sniffer->flavour == bfd_get_flavour (abfd)) | |
225 | { | |
226 | osabi = (*sniffer->sniffer) (abfd); | |
227 | if (osabi < GDB_OSABI_UNKNOWN || osabi >= GDB_OSABI_INVALID) | |
228 | { | |
229 | internal_error | |
230 | (__FILE__, __LINE__, | |
231 | "gdbarch_lookup_osabi: invalid OS ABI (%d) from sniffer " | |
232 | "for architecture %s flavour %d", | |
233 | (int) osabi, | |
234 | bfd_printable_arch_mach (bfd_get_arch (abfd), 0), | |
235 | (int) bfd_get_flavour (abfd)); | |
236 | } | |
237 | else if (osabi != GDB_OSABI_UNKNOWN) | |
238 | { | |
239 | /* A specific sniffer always overrides a generic sniffer. | |
240 | Croak on multiple match if the two matches are of the | |
241 | same class. If the user wishes to continue, we'll use | |
242 | the first match. */ | |
243 | if (match != GDB_OSABI_UNKNOWN) | |
244 | { | |
245 | if ((match_specific && sniffer->arch != bfd_arch_unknown) | |
246 | || (!match_specific && sniffer->arch == bfd_arch_unknown)) | |
247 | { | |
248 | internal_error | |
249 | (__FILE__, __LINE__, | |
250 | "gdbarch_lookup_osabi: multiple %sspecific OS ABI " | |
251 | "match for architecture %s flavour %d: first " | |
252 | "match \"%s\", second match \"%s\"", | |
253 | match_specific ? "" : "non-", | |
254 | bfd_printable_arch_mach (bfd_get_arch (abfd), 0), | |
255 | (int) bfd_get_flavour (abfd), | |
256 | gdbarch_osabi_name (match), | |
257 | gdbarch_osabi_name (osabi)); | |
258 | } | |
259 | else if (sniffer->arch != bfd_arch_unknown) | |
260 | { | |
261 | match = osabi; | |
262 | match_specific = 1; | |
263 | } | |
264 | } | |
265 | else | |
266 | { | |
267 | match = osabi; | |
268 | if (sniffer->arch != bfd_arch_unknown) | |
269 | match_specific = 1; | |
270 | } | |
271 | } | |
272 | } | |
273 | } | |
274 | ||
b00a8037 DJ |
275 | /* If we didn't find a match, but a default was specified at configure |
276 | time, return the default. */ | |
277 | if (GDB_OSABI_DEFAULT != GDB_OSABI_UNKNOWN && match == GDB_OSABI_UNKNOWN) | |
278 | return GDB_OSABI_DEFAULT; | |
279 | else | |
280 | return match; | |
70f80edf JT |
281 | } |
282 | ||
283 | void | |
4be87837 | 284 | gdbarch_init_osabi (struct gdbarch_info info, struct gdbarch *gdbarch) |
70f80edf | 285 | { |
70f80edf | 286 | const struct bfd_arch_info *arch_info = gdbarch_bfd_arch_info (gdbarch); |
05816f70 MK |
287 | const struct bfd_arch_info *compatible; |
288 | struct gdb_osabi_handler *handler; | |
70f80edf | 289 | |
4be87837 | 290 | if (info.osabi == GDB_OSABI_UNKNOWN) |
70f80edf | 291 | { |
01fc4e33 AC |
292 | /* Don't complain about an unknown OSABI. Assume the user knows |
293 | what they are doing. */ | |
70f80edf JT |
294 | return; |
295 | } | |
296 | ||
297 | for (handler = gdb_osabi_handler_list; handler != NULL; | |
298 | handler = handler->next) | |
299 | { | |
4be87837 | 300 | if (handler->osabi != info.osabi) |
05816f70 MK |
301 | continue; |
302 | ||
303 | /* Check whether the machine type and architecture of the | |
304 | handler are compatible with the desired machine type and | |
305 | architecture. | |
306 | ||
307 | NOTE: kettenis/20021027: There may be more than one machine | |
308 | type that is compatible with the desired machine type. Right | |
309 | now we simply return the first match, which is fine for now. | |
310 | However, we might want to do something smarter in the future. */ | |
311 | compatible = arch_info->compatible (arch_info, handler->arch_info); | |
312 | if (compatible == handler->arch_info) | |
70f80edf JT |
313 | { |
314 | (*handler->init_osabi) (info, gdbarch); | |
315 | return; | |
316 | } | |
317 | } | |
318 | ||
319 | /* We assume that if GDB_MULTI_ARCH is less than GDB_MULTI_ARCH_TM | |
320 | that an ABI variant can be supported by overriding definitions in | |
321 | the tm-file. */ | |
322 | if (GDB_MULTI_ARCH > GDB_MULTI_ARCH_PARTIAL) | |
323 | fprintf_filtered | |
324 | (gdb_stderr, | |
325 | "A handler for the OS ABI \"%s\" is not built into this " | |
326 | "configuration of GDB. " | |
327 | "Attempting to continue with the default %s settings", | |
4be87837 | 328 | gdbarch_osabi_name (info.osabi), |
70f80edf JT |
329 | bfd_printable_arch_mach (arch_info->arch, arch_info->mach)); |
330 | } | |
331 | \f | |
332 | ||
333 | /* Generic sniffer for ELF flavoured files. */ | |
334 | ||
335 | void | |
336 | generic_elf_osabi_sniff_abi_tag_sections (bfd *abfd, asection *sect, void *obj) | |
337 | { | |
338 | enum gdb_osabi *os_ident_ptr = obj; | |
339 | const char *name; | |
340 | unsigned int sectsize; | |
341 | ||
342 | name = bfd_get_section_name (abfd, sect); | |
343 | sectsize = bfd_section_size (abfd, sect); | |
344 | ||
345 | /* .note.ABI-tag notes, used by GNU/Linux and FreeBSD. */ | |
346 | if (strcmp (name, ".note.ABI-tag") == 0 && sectsize > 0) | |
347 | { | |
348 | unsigned int name_length, data_length, note_type; | |
349 | char *note; | |
350 | ||
351 | /* If the section is larger than this, it's probably not what we are | |
352 | looking for. */ | |
353 | if (sectsize > 128) | |
354 | sectsize = 128; | |
355 | ||
356 | note = alloca (sectsize); | |
357 | ||
358 | bfd_get_section_contents (abfd, sect, note, | |
359 | (file_ptr) 0, (bfd_size_type) sectsize); | |
360 | ||
361 | name_length = bfd_h_get_32 (abfd, note); | |
362 | data_length = bfd_h_get_32 (abfd, note + 4); | |
363 | note_type = bfd_h_get_32 (abfd, note + 8); | |
364 | ||
365 | if (name_length == 4 && data_length == 16 && note_type == NT_GNU_ABI_TAG | |
366 | && strcmp (note + 12, "GNU") == 0) | |
367 | { | |
368 | int os_number = bfd_h_get_32 (abfd, note + 16); | |
369 | ||
370 | switch (os_number) | |
371 | { | |
372 | case GNU_ABI_TAG_LINUX: | |
373 | *os_ident_ptr = GDB_OSABI_LINUX; | |
374 | break; | |
375 | ||
376 | case GNU_ABI_TAG_HURD: | |
377 | *os_ident_ptr = GDB_OSABI_HURD; | |
378 | break; | |
379 | ||
380 | case GNU_ABI_TAG_SOLARIS: | |
381 | *os_ident_ptr = GDB_OSABI_SOLARIS; | |
382 | break; | |
383 | ||
384 | default: | |
385 | internal_error | |
386 | (__FILE__, __LINE__, | |
387 | "generic_elf_osabi_sniff_abi_tag_sections: unknown OS number %d", | |
388 | os_number); | |
389 | } | |
390 | return; | |
391 | } | |
392 | else if (name_length == 8 && data_length == 4 | |
393 | && note_type == NT_FREEBSD_ABI_TAG | |
394 | && strcmp (note + 12, "FreeBSD") == 0) | |
395 | { | |
396 | /* XXX Should we check the version here? Probably not | |
397 | necessary yet. */ | |
398 | *os_ident_ptr = GDB_OSABI_FREEBSD_ELF; | |
399 | } | |
400 | return; | |
401 | } | |
402 | ||
403 | /* .note.netbsd.ident notes, used by NetBSD. */ | |
404 | if (strcmp (name, ".note.netbsd.ident") == 0 && sectsize > 0) | |
405 | { | |
406 | unsigned int name_length, data_length, note_type; | |
407 | char *note; | |
408 | ||
409 | /* If the section is larger than this, it's probably not what we are | |
410 | looking for. */ | |
411 | if (sectsize > 128) | |
412 | sectsize = 128; | |
413 | ||
414 | note = alloca (sectsize); | |
415 | ||
416 | bfd_get_section_contents (abfd, sect, note, | |
417 | (file_ptr) 0, (bfd_size_type) sectsize); | |
418 | ||
419 | name_length = bfd_h_get_32 (abfd, note); | |
420 | data_length = bfd_h_get_32 (abfd, note + 4); | |
421 | note_type = bfd_h_get_32 (abfd, note + 8); | |
422 | ||
423 | if (name_length == 7 && data_length == 4 && note_type == NT_NETBSD_IDENT | |
424 | && strcmp (note + 12, "NetBSD") == 0) | |
425 | { | |
426 | /* XXX Should we check the version here? Probably not | |
427 | necessary yet. */ | |
428 | *os_ident_ptr = GDB_OSABI_NETBSD_ELF; | |
429 | } | |
430 | return; | |
431 | } | |
432 | } | |
433 | ||
434 | static enum gdb_osabi | |
435 | generic_elf_osabi_sniffer (bfd *abfd) | |
436 | { | |
437 | unsigned int elfosabi; | |
438 | enum gdb_osabi osabi = GDB_OSABI_UNKNOWN; | |
439 | ||
440 | elfosabi = elf_elfheader (abfd)->e_ident[EI_OSABI]; | |
441 | ||
442 | switch (elfosabi) | |
443 | { | |
444 | case ELFOSABI_NONE: | |
445 | /* When elfosabi is ELFOSABI_NONE (0), then the ELF structures in the | |
446 | file are conforming to the base specification for that machine | |
447 | (there are no OS-specific extensions). In order to determine the | |
448 | real OS in use we must look for OS notes that have been added. */ | |
449 | bfd_map_over_sections (abfd, | |
450 | generic_elf_osabi_sniff_abi_tag_sections, | |
451 | &osabi); | |
452 | break; | |
453 | ||
454 | case ELFOSABI_FREEBSD: | |
455 | osabi = GDB_OSABI_FREEBSD_ELF; | |
456 | break; | |
457 | ||
458 | case ELFOSABI_NETBSD: | |
459 | osabi = GDB_OSABI_NETBSD_ELF; | |
460 | break; | |
461 | ||
462 | case ELFOSABI_LINUX: | |
463 | osabi = GDB_OSABI_LINUX; | |
464 | break; | |
465 | ||
466 | case ELFOSABI_HURD: | |
467 | osabi = GDB_OSABI_HURD; | |
468 | break; | |
469 | ||
470 | case ELFOSABI_SOLARIS: | |
471 | osabi = GDB_OSABI_SOLARIS; | |
472 | break; | |
a09a320d JB |
473 | |
474 | case ELFOSABI_HPUX: | |
475 | osabi = GDB_OSABI_HPUX_ELF; | |
476 | break; | |
70f80edf JT |
477 | } |
478 | ||
bb21884d MK |
479 | if (osabi == GDB_OSABI_UNKNOWN) |
480 | { | |
481 | /* The FreeBSD folks have been naughty; they stored the string | |
482 | "FreeBSD" in the padding of the e_ident field of the ELF | |
483 | header to "brand" their ELF binaries in FreeBSD 3.x. */ | |
484 | if (strcmp (&elf_elfheader (abfd)->e_ident[8], "FreeBSD") == 0) | |
485 | osabi = GDB_OSABI_FREEBSD_ELF; | |
486 | } | |
487 | ||
70f80edf JT |
488 | return osabi; |
489 | } | |
490 | \f | |
b00a8037 DJ |
491 | static void |
492 | set_osabi (char *args, int from_tty, struct cmd_list_element *c) | |
493 | { | |
494 | struct gdbarch_info info; | |
70f80edf | 495 | |
b00a8037 DJ |
496 | if (strcmp (set_osabi_string, "auto") == 0) |
497 | user_osabi_state = osabi_auto; | |
498 | else if (strcmp (set_osabi_string, "default") == 0) | |
499 | { | |
500 | user_selected_osabi = GDB_OSABI_DEFAULT; | |
501 | user_osabi_state = osabi_user; | |
502 | } | |
503 | else if (strcmp (set_osabi_string, "none") == 0) | |
504 | { | |
505 | user_selected_osabi = GDB_OSABI_UNKNOWN; | |
506 | user_osabi_state = osabi_user; | |
507 | } | |
508 | else | |
509 | { | |
510 | int i; | |
511 | for (i = 1; i < GDB_OSABI_INVALID; i++) | |
512 | if (strcmp (set_osabi_string, gdbarch_osabi_name (i)) == 0) | |
513 | { | |
514 | user_selected_osabi = i; | |
515 | user_osabi_state = osabi_user; | |
516 | break; | |
517 | } | |
518 | if (i == GDB_OSABI_INVALID) | |
519 | internal_error (__FILE__, __LINE__, | |
520 | "Invalid OS ABI \"%s\" passed to command handler.", | |
521 | set_osabi_string); | |
522 | } | |
523 | ||
524 | /* NOTE: At some point (true multiple architectures) we'll need to be more | |
525 | graceful here. */ | |
526 | gdbarch_info_init (&info); | |
527 | if (! gdbarch_update_p (info)) | |
528 | internal_error (__FILE__, __LINE__, "Updating OS ABI failed."); | |
529 | } | |
530 | ||
531 | void | |
532 | show_osabi (char *args, int from_tty) | |
533 | { | |
534 | if (user_osabi_state == osabi_auto) | |
535 | printf_filtered ("The current OS ABI is \"auto\" (currently \"%s\").\n", | |
536 | gdbarch_osabi_name (gdbarch_osabi (current_gdbarch))); | |
537 | else | |
538 | printf_filtered ("The current OS ABI is \"%s\".\n", | |
539 | gdbarch_osabi_name (user_selected_osabi)); | |
540 | ||
541 | if (GDB_OSABI_DEFAULT != GDB_OSABI_UNKNOWN) | |
542 | printf_filtered ("The default OS ABI is \"%s\".\n", | |
543 | gdbarch_osabi_name (GDB_OSABI_DEFAULT)); | |
544 | } | |
545 | \f | |
70f80edf JT |
546 | void |
547 | _initialize_gdb_osabi (void) | |
548 | { | |
b00a8037 DJ |
549 | struct cmd_list_element *c; |
550 | ||
70f80edf JT |
551 | if (strcmp (gdb_osabi_names[GDB_OSABI_INVALID], "<invalid>") != 0) |
552 | internal_error | |
553 | (__FILE__, __LINE__, | |
554 | "_initialize_gdb_osabi: gdb_osabi_names[] is inconsistent"); | |
555 | ||
556 | /* Register a generic sniffer for ELF flavoured files. */ | |
557 | gdbarch_register_osabi_sniffer (bfd_arch_unknown, | |
558 | bfd_target_elf_flavour, | |
559 | generic_elf_osabi_sniffer); | |
b00a8037 DJ |
560 | |
561 | if (!GDB_MULTI_ARCH) | |
562 | return; | |
563 | ||
564 | /* Register the "set osabi" command. */ | |
565 | c = add_set_enum_cmd ("osabi", class_support, gdb_osabi_available_names, | |
566 | &set_osabi_string, "Set OS ABI of target.", &setlist); | |
567 | ||
568 | set_cmd_sfunc (c, set_osabi); | |
569 | add_cmd ("osabi", class_support, show_osabi, "Show OS/ABI of target.", | |
570 | &showlist); | |
571 | user_osabi_state = osabi_auto; | |
70f80edf | 572 | } |