Commit | Line | Data |
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c0e8c252 | 1 | /* Dynamic architecture support for GDB, the GNU debugger. |
b6ba6518 | 2 | Copyright 1998, 1999, 2000, 2001 Free Software Foundation, Inc. |
c0e8c252 AC |
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" | |
22 | ||
23 | #if GDB_MULTI_ARCH | |
24 | #include "gdbcmd.h" | |
25 | #include "inferior.h" /* enum CALL_DUMMY_LOCATION et.al. */ | |
26 | #else | |
27 | /* Just include everything in sight so that the every old definition | |
28 | of macro is visible. */ | |
29 | #include "gdb_string.h" | |
c0e8c252 AC |
30 | #include "symtab.h" |
31 | #include "frame.h" | |
32 | #include "inferior.h" | |
33 | #include "breakpoint.h" | |
34 | #include "gdb_wait.h" | |
35 | #include "gdbcore.h" | |
36 | #include "gdbcmd.h" | |
37 | #include "target.h" | |
c0e8c252 | 38 | #include "annotate.h" |
c0e8c252 | 39 | #endif |
fbec36e2 | 40 | #include "regcache.h" |
c0e8c252 | 41 | |
1ba607ad AC |
42 | #include "version.h" |
43 | ||
f0d4cc9e AC |
44 | #include "floatformat.h" |
45 | ||
c0e8c252 AC |
46 | /* Use the program counter to determine the contents and size |
47 | of a breakpoint instruction. If no target-dependent macro | |
48 | BREAKPOINT_FROM_PC has been defined to implement this function, | |
49 | assume that the breakpoint doesn't depend on the PC, and | |
50 | use the values of the BIG_BREAKPOINT and LITTLE_BREAKPOINT macros. | |
51 | Return a pointer to a string of bytes that encode a breakpoint | |
52 | instruction, stores the length of the string to *lenptr, | |
53 | and optionally adjust the pc to point to the correct memory location | |
54 | for inserting the breakpoint. */ | |
55 | ||
56 | unsigned char * | |
57 | legacy_breakpoint_from_pc (CORE_ADDR * pcptr, int *lenptr) | |
58 | { | |
59 | /* {BIG_,LITTLE_}BREAKPOINT is the sequence of bytes we insert for a | |
60 | breakpoint. On some machines, breakpoints are handled by the | |
61 | target environment and we don't have to worry about them here. */ | |
62 | #ifdef BIG_BREAKPOINT | |
63 | if (TARGET_BYTE_ORDER == BIG_ENDIAN) | |
64 | { | |
65 | static unsigned char big_break_insn[] = BIG_BREAKPOINT; | |
66 | *lenptr = sizeof (big_break_insn); | |
67 | return big_break_insn; | |
68 | } | |
69 | #endif | |
70 | #ifdef LITTLE_BREAKPOINT | |
71 | if (TARGET_BYTE_ORDER != BIG_ENDIAN) | |
72 | { | |
73 | static unsigned char little_break_insn[] = LITTLE_BREAKPOINT; | |
74 | *lenptr = sizeof (little_break_insn); | |
75 | return little_break_insn; | |
76 | } | |
77 | #endif | |
78 | #ifdef BREAKPOINT | |
79 | { | |
80 | static unsigned char break_insn[] = BREAKPOINT; | |
81 | *lenptr = sizeof (break_insn); | |
82 | return break_insn; | |
83 | } | |
84 | #endif | |
85 | *lenptr = 0; | |
86 | return NULL; | |
87 | } | |
88 | ||
89 | int | |
90 | generic_frameless_function_invocation_not (struct frame_info *fi) | |
91 | { | |
92 | return 0; | |
93 | } | |
94 | ||
71a9f22e JB |
95 | int |
96 | generic_return_value_on_stack_not (struct type *type) | |
97 | { | |
98 | return 0; | |
99 | } | |
100 | ||
c0e8c252 AC |
101 | char * |
102 | legacy_register_name (int i) | |
103 | { | |
104 | #ifdef REGISTER_NAMES | |
105 | static char *names[] = REGISTER_NAMES; | |
106 | if (i < 0 || i >= (sizeof (names) / sizeof (*names))) | |
107 | return NULL; | |
108 | else | |
109 | return names[i]; | |
110 | #else | |
8e65ff28 AC |
111 | internal_error (__FILE__, __LINE__, |
112 | "legacy_register_name: called."); | |
c0e8c252 AC |
113 | return NULL; |
114 | #endif | |
115 | } | |
116 | ||
117 | #if defined (CALL_DUMMY) | |
118 | LONGEST legacy_call_dummy_words[] = CALL_DUMMY; | |
119 | #else | |
120 | LONGEST legacy_call_dummy_words[1]; | |
121 | #endif | |
122 | int legacy_sizeof_call_dummy_words = sizeof (legacy_call_dummy_words); | |
123 | ||
124 | void | |
125 | generic_remote_translate_xfer_address (CORE_ADDR gdb_addr, int gdb_len, | |
126 | CORE_ADDR * rem_addr, int *rem_len) | |
127 | { | |
128 | *rem_addr = gdb_addr; | |
129 | *rem_len = gdb_len; | |
130 | } | |
131 | ||
dad41f9a AC |
132 | int |
133 | generic_prologue_frameless_p (CORE_ADDR ip) | |
134 | { | |
135 | #ifdef SKIP_PROLOGUE_FRAMELESS_P | |
136 | return ip == SKIP_PROLOGUE_FRAMELESS_P (ip); | |
137 | #else | |
138 | return ip == SKIP_PROLOGUE (ip); | |
139 | #endif | |
140 | } | |
141 | ||
142 | ||
3339cf8b AC |
143 | /* Helper functions for INNER_THAN */ |
144 | ||
145 | int | |
fba45db2 | 146 | core_addr_lessthan (CORE_ADDR lhs, CORE_ADDR rhs) |
3339cf8b AC |
147 | { |
148 | return (lhs < rhs); | |
149 | } | |
150 | ||
151 | int | |
fba45db2 | 152 | core_addr_greaterthan (CORE_ADDR lhs, CORE_ADDR rhs) |
3339cf8b AC |
153 | { |
154 | return (lhs > rhs); | |
155 | } | |
156 | ||
157 | ||
f0d4cc9e AC |
158 | /* Helper functions for TARGET_{FLOAT,DOUBLE}_FORMAT */ |
159 | ||
160 | const struct floatformat * | |
161 | default_float_format (struct gdbarch *gdbarch) | |
162 | { | |
163 | #if GDB_MULTI_ARCH | |
164 | int byte_order = gdbarch_byte_order (gdbarch); | |
165 | #else | |
166 | int byte_order = TARGET_BYTE_ORDER; | |
167 | #endif | |
168 | switch (byte_order) | |
169 | { | |
170 | case BIG_ENDIAN: | |
171 | return &floatformat_ieee_single_big; | |
172 | case LITTLE_ENDIAN: | |
173 | return &floatformat_ieee_single_little; | |
174 | default: | |
8e65ff28 AC |
175 | internal_error (__FILE__, __LINE__, |
176 | "default_float_format: bad byte order"); | |
f0d4cc9e AC |
177 | } |
178 | } | |
179 | ||
180 | ||
181 | const struct floatformat * | |
182 | default_double_format (struct gdbarch *gdbarch) | |
183 | { | |
184 | #if GDB_MULTI_ARCH | |
185 | int byte_order = gdbarch_byte_order (gdbarch); | |
186 | #else | |
187 | int byte_order = TARGET_BYTE_ORDER; | |
188 | #endif | |
189 | switch (byte_order) | |
190 | { | |
191 | case BIG_ENDIAN: | |
192 | return &floatformat_ieee_double_big; | |
193 | case LITTLE_ENDIAN: | |
194 | return &floatformat_ieee_double_little; | |
195 | default: | |
8e65ff28 AC |
196 | internal_error (__FILE__, __LINE__, |
197 | "default_double_format: bad byte order"); | |
f0d4cc9e AC |
198 | } |
199 | } | |
200 | ||
193e3b1a AC |
201 | /* Misc helper functions for targets. */ |
202 | ||
203 | int | |
fba45db2 | 204 | frame_num_args_unknown (struct frame_info *fi) |
193e3b1a AC |
205 | { |
206 | return -1; | |
207 | } | |
208 | ||
209 | ||
210 | int | |
fba45db2 | 211 | generic_register_convertible_not (int num) |
193e3b1a AC |
212 | { |
213 | return 0; | |
214 | } | |
215 | ||
b4a20239 | 216 | |
7c7651b2 AC |
217 | int |
218 | default_register_sim_regno (int num) | |
219 | { | |
220 | return num; | |
221 | } | |
222 | ||
f517ea4e PS |
223 | |
224 | CORE_ADDR | |
225 | default_convert_from_func_ptr_addr (CORE_ADDR addr) | |
226 | { | |
227 | return addr; | |
228 | } | |
229 | ||
88c72b7d AC |
230 | int |
231 | no_op_reg_to_regnum (int reg) | |
232 | { | |
233 | return reg; | |
234 | } | |
235 | ||
c347ee3e MS |
236 | /* For use by frame_args_address and frame_locals_address. */ |
237 | CORE_ADDR | |
238 | default_frame_address (struct frame_info *fi) | |
239 | { | |
240 | return fi->frame; | |
241 | } | |
242 | ||
e02bc4cc DS |
243 | /* Default prepare_to_procced(). */ |
244 | int | |
245 | default_prepare_to_proceed (int select_it) | |
246 | { | |
247 | return 0; | |
248 | } | |
249 | ||
250 | /* Generic prepare_to_proceed(). This one should be suitable for most | |
251 | targets that support threads. */ | |
252 | int | |
253 | generic_prepare_to_proceed (int select_it) | |
254 | { | |
255 | int wait_pid; | |
256 | struct target_waitstatus wait_status; | |
257 | ||
258 | /* Get the last target status returned by target_wait(). */ | |
259 | get_last_target_status (&wait_pid, &wait_status); | |
260 | ||
261 | /* Make sure we were stopped at a breakpoint. */ | |
262 | if (wait_status.kind != TARGET_WAITKIND_STOPPED | |
263 | || wait_status.value.sig != TARGET_SIGNAL_TRAP) | |
264 | { | |
265 | return 0; | |
266 | } | |
267 | ||
268 | if (wait_pid != -1 && inferior_pid != wait_pid) | |
269 | { | |
270 | /* Switched over from WAIT_PID. */ | |
271 | CORE_ADDR wait_pc = read_pc_pid (wait_pid); | |
272 | ||
273 | /* Avoid switching where it wouldn't do any good, i.e. if both | |
274 | threads are at the same breakpoint. */ | |
275 | if (wait_pc != read_pc () && breakpoint_here_p (wait_pc)) | |
276 | { | |
277 | if (select_it) | |
278 | { | |
279 | /* User hasn't deleted the breakpoint. Switch back to | |
280 | WAIT_PID and return non-zero. */ | |
281 | inferior_pid = wait_pid; | |
282 | ||
283 | /* FIXME: This stuff came from switch_to_thread() in | |
284 | thread.c (which should probably be a public function). */ | |
285 | flush_cached_frames (); | |
286 | registers_changed (); | |
287 | stop_pc = wait_pc; | |
288 | select_frame (get_current_frame (), 0); | |
289 | } | |
290 | ||
291 | return 1; | |
292 | } | |
293 | } | |
294 | return 0; | |
295 | ||
296 | } | |
297 | ||
b4a20239 AC |
298 | /* Functions to manipulate the endianness of the target. */ |
299 | ||
300 | #ifdef TARGET_BYTE_ORDER_SELECTABLE | |
301 | /* compat - Catch old targets that expect a selectable byte-order to | |
302 | default to BIG_ENDIAN */ | |
303 | #ifndef TARGET_BYTE_ORDER_DEFAULT | |
304 | #define TARGET_BYTE_ORDER_DEFAULT BIG_ENDIAN | |
305 | #endif | |
306 | #endif | |
307 | #if !TARGET_BYTE_ORDER_SELECTABLE_P | |
308 | #ifndef TARGET_BYTE_ORDER_DEFAULT | |
309 | /* compat - Catch old non byte-order selectable targets that do not | |
310 | define TARGET_BYTE_ORDER_DEFAULT and instead expect | |
311 | TARGET_BYTE_ORDER to be used as the default. For targets that | |
312 | defined neither TARGET_BYTE_ORDER nor TARGET_BYTE_ORDER_DEFAULT the | |
313 | below will get a strange compiler warning. */ | |
314 | #define TARGET_BYTE_ORDER_DEFAULT TARGET_BYTE_ORDER | |
315 | #endif | |
316 | #endif | |
317 | #ifndef TARGET_BYTE_ORDER_DEFAULT | |
318 | #define TARGET_BYTE_ORDER_DEFAULT BIG_ENDIAN /* arbitrary */ | |
319 | #endif | |
1ba607ad AC |
320 | /* ``target_byte_order'' is only used when non- multi-arch. |
321 | Multi-arch targets obtain the current byte order using | |
322 | TARGET_BYTE_ORDER which is controlled by gdbarch.*. */ | |
b4a20239 AC |
323 | int target_byte_order = TARGET_BYTE_ORDER_DEFAULT; |
324 | int target_byte_order_auto = 1; | |
325 | ||
53904c9e AC |
326 | static const char endian_big[] = "big"; |
327 | static const char endian_little[] = "little"; | |
328 | static const char endian_auto[] = "auto"; | |
329 | static const char *endian_enum[] = | |
b4a20239 AC |
330 | { |
331 | endian_big, | |
332 | endian_little, | |
333 | endian_auto, | |
334 | NULL, | |
335 | }; | |
53904c9e | 336 | static const char *set_endian_string; |
b4a20239 AC |
337 | |
338 | /* Called by ``show endian''. */ | |
339 | ||
340 | static void | |
341 | show_endian (char *args, int from_tty) | |
342 | { | |
343 | if (TARGET_BYTE_ORDER_AUTO) | |
344 | printf_unfiltered ("The target endianness is set automatically (currently %s endian)\n", | |
345 | (TARGET_BYTE_ORDER == BIG_ENDIAN ? "big" : "little")); | |
346 | else | |
347 | printf_unfiltered ("The target is assumed to be %s endian\n", | |
348 | (TARGET_BYTE_ORDER == BIG_ENDIAN ? "big" : "little")); | |
349 | } | |
350 | ||
351 | static void | |
352 | set_endian (char *ignore_args, int from_tty, struct cmd_list_element *c) | |
353 | { | |
354 | if (!TARGET_BYTE_ORDER_SELECTABLE_P) | |
355 | { | |
356 | printf_unfiltered ("Byte order is not selectable."); | |
357 | } | |
358 | else if (set_endian_string == endian_auto) | |
359 | { | |
360 | target_byte_order_auto = 1; | |
361 | } | |
362 | else if (set_endian_string == endian_little) | |
363 | { | |
b4a20239 AC |
364 | target_byte_order_auto = 0; |
365 | if (GDB_MULTI_ARCH) | |
366 | { | |
367 | struct gdbarch_info info; | |
368 | memset (&info, 0, sizeof info); | |
369 | info.byte_order = LITTLE_ENDIAN; | |
16f33e29 AC |
370 | if (! gdbarch_update_p (info)) |
371 | { | |
372 | printf_unfiltered ("Little endian target not supported by GDB\n"); | |
373 | } | |
b4a20239 | 374 | } |
1ba607ad AC |
375 | else |
376 | { | |
377 | target_byte_order = LITTLE_ENDIAN; | |
378 | } | |
b4a20239 AC |
379 | } |
380 | else if (set_endian_string == endian_big) | |
381 | { | |
b4a20239 AC |
382 | target_byte_order_auto = 0; |
383 | if (GDB_MULTI_ARCH) | |
384 | { | |
385 | struct gdbarch_info info; | |
386 | memset (&info, 0, sizeof info); | |
387 | info.byte_order = BIG_ENDIAN; | |
16f33e29 AC |
388 | if (! gdbarch_update_p (info)) |
389 | { | |
390 | printf_unfiltered ("Big endian target not supported by GDB\n"); | |
391 | } | |
b4a20239 | 392 | } |
1ba607ad AC |
393 | else |
394 | { | |
395 | target_byte_order = BIG_ENDIAN; | |
396 | } | |
b4a20239 AC |
397 | } |
398 | else | |
8e65ff28 AC |
399 | internal_error (__FILE__, __LINE__, |
400 | "set_endian: bad value"); | |
b4a20239 AC |
401 | show_endian (NULL, from_tty); |
402 | } | |
403 | ||
404 | /* Set the endianness from a BFD. */ | |
405 | ||
406 | static void | |
407 | set_endian_from_file (bfd *abfd) | |
408 | { | |
1ba607ad | 409 | if (GDB_MULTI_ARCH) |
8e65ff28 AC |
410 | internal_error (__FILE__, __LINE__, |
411 | "set_endian_from_file: not for multi-arch"); | |
b4a20239 AC |
412 | if (TARGET_BYTE_ORDER_SELECTABLE_P) |
413 | { | |
414 | int want; | |
415 | ||
416 | if (bfd_big_endian (abfd)) | |
417 | want = BIG_ENDIAN; | |
418 | else | |
419 | want = LITTLE_ENDIAN; | |
420 | if (TARGET_BYTE_ORDER_AUTO) | |
421 | target_byte_order = want; | |
422 | else if (TARGET_BYTE_ORDER != want) | |
423 | warning ("%s endian file does not match %s endian target.", | |
424 | want == BIG_ENDIAN ? "big" : "little", | |
425 | TARGET_BYTE_ORDER == BIG_ENDIAN ? "big" : "little"); | |
426 | } | |
427 | else | |
428 | { | |
429 | if (bfd_big_endian (abfd) | |
430 | ? TARGET_BYTE_ORDER != BIG_ENDIAN | |
431 | : TARGET_BYTE_ORDER == BIG_ENDIAN) | |
432 | warning ("%s endian file does not match %s endian target.", | |
433 | bfd_big_endian (abfd) ? "big" : "little", | |
434 | TARGET_BYTE_ORDER == BIG_ENDIAN ? "big" : "little"); | |
435 | } | |
436 | } | |
437 | ||
438 | ||
439 | /* Functions to manipulate the architecture of the target */ | |
440 | ||
441 | enum set_arch { set_arch_auto, set_arch_manual }; | |
442 | ||
443 | int target_architecture_auto = 1; | |
444 | ||
53904c9e | 445 | const char *set_architecture_string; |
b4a20239 AC |
446 | |
447 | /* Old way of changing the current architecture. */ | |
448 | ||
449 | extern const struct bfd_arch_info bfd_default_arch_struct; | |
450 | const struct bfd_arch_info *target_architecture = &bfd_default_arch_struct; | |
451 | int (*target_architecture_hook) (const struct bfd_arch_info *ap); | |
452 | ||
453 | static int | |
454 | arch_ok (const struct bfd_arch_info *arch) | |
455 | { | |
456 | if (GDB_MULTI_ARCH) | |
8e65ff28 AC |
457 | internal_error (__FILE__, __LINE__, |
458 | "arch_ok: not multi-arched"); | |
b4a20239 AC |
459 | /* Should be performing the more basic check that the binary is |
460 | compatible with GDB. */ | |
461 | /* Check with the target that the architecture is valid. */ | |
462 | return (target_architecture_hook == NULL | |
463 | || target_architecture_hook (arch)); | |
464 | } | |
465 | ||
466 | static void | |
467 | set_arch (const struct bfd_arch_info *arch, | |
468 | enum set_arch type) | |
469 | { | |
470 | if (GDB_MULTI_ARCH) | |
8e65ff28 AC |
471 | internal_error (__FILE__, __LINE__, |
472 | "set_arch: not multi-arched"); | |
b4a20239 AC |
473 | switch (type) |
474 | { | |
475 | case set_arch_auto: | |
476 | if (!arch_ok (arch)) | |
477 | warning ("Target may not support %s architecture", | |
478 | arch->printable_name); | |
479 | target_architecture = arch; | |
480 | break; | |
481 | case set_arch_manual: | |
482 | if (!arch_ok (arch)) | |
483 | { | |
484 | printf_unfiltered ("Target does not support `%s' architecture.\n", | |
485 | arch->printable_name); | |
486 | } | |
487 | else | |
488 | { | |
489 | target_architecture_auto = 0; | |
490 | target_architecture = arch; | |
491 | } | |
492 | break; | |
493 | } | |
494 | if (gdbarch_debug) | |
4b9b3959 | 495 | gdbarch_dump (current_gdbarch, gdb_stdlog); |
b4a20239 AC |
496 | } |
497 | ||
498 | /* Set the architecture from arch/machine (deprecated) */ | |
499 | ||
500 | void | |
501 | set_architecture_from_arch_mach (enum bfd_architecture arch, | |
502 | unsigned long mach) | |
503 | { | |
504 | const struct bfd_arch_info *wanted = bfd_lookup_arch (arch, mach); | |
505 | if (GDB_MULTI_ARCH) | |
8e65ff28 AC |
506 | internal_error (__FILE__, __LINE__, |
507 | "set_architecture_from_arch_mach: not multi-arched"); | |
b4a20239 AC |
508 | if (wanted != NULL) |
509 | set_arch (wanted, set_arch_manual); | |
510 | else | |
8e65ff28 AC |
511 | internal_error (__FILE__, __LINE__, |
512 | "gdbarch: hardwired architecture/machine not recognized"); | |
b4a20239 AC |
513 | } |
514 | ||
515 | /* Set the architecture from a BFD (deprecated) */ | |
516 | ||
517 | static void | |
518 | set_architecture_from_file (bfd *abfd) | |
519 | { | |
520 | const struct bfd_arch_info *wanted = bfd_get_arch_info (abfd); | |
521 | if (GDB_MULTI_ARCH) | |
8e65ff28 AC |
522 | internal_error (__FILE__, __LINE__, |
523 | "set_architecture_from_file: not multi-arched"); | |
b4a20239 AC |
524 | if (target_architecture_auto) |
525 | { | |
526 | set_arch (wanted, set_arch_auto); | |
527 | } | |
528 | else if (wanted != target_architecture) | |
529 | { | |
530 | warning ("%s architecture file may be incompatible with %s target.", | |
531 | wanted->printable_name, | |
532 | target_architecture->printable_name); | |
533 | } | |
534 | } | |
535 | ||
536 | ||
537 | /* Called if the user enters ``show architecture'' without an | |
538 | argument. */ | |
539 | ||
540 | static void | |
541 | show_architecture (char *args, int from_tty) | |
542 | { | |
543 | const char *arch; | |
544 | arch = TARGET_ARCHITECTURE->printable_name; | |
545 | if (target_architecture_auto) | |
546 | printf_filtered ("The target architecture is set automatically (currently %s)\n", arch); | |
547 | else | |
548 | printf_filtered ("The target architecture is assumed to be %s\n", arch); | |
549 | } | |
550 | ||
551 | ||
552 | /* Called if the user enters ``set architecture'' with or without an | |
553 | argument. */ | |
554 | ||
555 | static void | |
556 | set_architecture (char *ignore_args, int from_tty, struct cmd_list_element *c) | |
557 | { | |
558 | if (strcmp (set_architecture_string, "auto") == 0) | |
559 | { | |
560 | target_architecture_auto = 1; | |
561 | } | |
562 | else if (GDB_MULTI_ARCH) | |
563 | { | |
564 | struct gdbarch_info info; | |
565 | memset (&info, 0, sizeof info); | |
566 | info.bfd_arch_info = bfd_scan_arch (set_architecture_string); | |
567 | if (info.bfd_arch_info == NULL) | |
8e65ff28 AC |
568 | internal_error (__FILE__, __LINE__, |
569 | "set_architecture: bfd_scan_arch failed"); | |
16f33e29 | 570 | if (gdbarch_update_p (info)) |
b4a20239 AC |
571 | target_architecture_auto = 0; |
572 | else | |
ec3d358c | 573 | printf_unfiltered ("Architecture `%s' not recognized.\n", |
b4a20239 AC |
574 | set_architecture_string); |
575 | } | |
576 | else | |
577 | { | |
578 | const struct bfd_arch_info *arch | |
579 | = bfd_scan_arch (set_architecture_string); | |
580 | if (arch == NULL) | |
8e65ff28 AC |
581 | internal_error (__FILE__, __LINE__, |
582 | "set_architecture: bfd_scan_arch failed"); | |
b4a20239 AC |
583 | set_arch (arch, set_arch_manual); |
584 | } | |
585 | show_architecture (NULL, from_tty); | |
586 | } | |
587 | ||
588 | /* Called if the user enters ``info architecture'' without an argument. */ | |
589 | ||
590 | static void | |
591 | info_architecture (char *args, int from_tty) | |
592 | { | |
593 | printf_filtered ("Available architectures are:\n"); | |
594 | if (GDB_MULTI_ARCH) | |
595 | { | |
596 | const char **arches = gdbarch_printable_names (); | |
597 | const char **arch; | |
598 | for (arch = arches; *arch != NULL; arch++) | |
599 | { | |
600 | printf_filtered (" %s", *arch); | |
601 | } | |
b8c9b27d | 602 | xfree (arches); |
b4a20239 AC |
603 | } |
604 | else | |
605 | { | |
606 | enum bfd_architecture a; | |
607 | for (a = bfd_arch_obscure + 1; a < bfd_arch_last; a++) | |
608 | { | |
609 | const struct bfd_arch_info *ap; | |
610 | for (ap = bfd_lookup_arch (a, 0); | |
611 | ap != NULL; | |
612 | ap = ap->next) | |
613 | { | |
614 | printf_filtered (" %s", ap->printable_name); | |
615 | ap = ap->next; | |
616 | } | |
617 | } | |
618 | } | |
619 | printf_filtered ("\n"); | |
620 | } | |
621 | ||
b7d6b182 | 622 | /* Set the dynamic target-system-dependent parameters (architecture, |
b4a20239 AC |
623 | byte-order) using information found in the BFD */ |
624 | ||
625 | void | |
fba45db2 | 626 | set_gdbarch_from_file (bfd *abfd) |
b4a20239 AC |
627 | { |
628 | if (GDB_MULTI_ARCH) | |
629 | { | |
630 | struct gdbarch_info info; | |
631 | memset (&info, 0, sizeof info); | |
632 | info.abfd = abfd; | |
16f33e29 | 633 | if (! gdbarch_update_p (info)) |
ec3d358c | 634 | error ("Architecture of file not recognized.\n"); |
b4a20239 AC |
635 | } |
636 | else | |
637 | { | |
638 | set_architecture_from_file (abfd); | |
639 | set_endian_from_file (abfd); | |
640 | } | |
641 | } | |
642 | ||
643 | /* Initialize the current architecture. Update the ``set | |
644 | architecture'' command so that it specifies a list of valid | |
645 | architectures. */ | |
646 | ||
1ba607ad AC |
647 | #ifdef DEFAULT_BFD_ARCH |
648 | extern const bfd_arch_info_type DEFAULT_BFD_ARCH; | |
649 | static const bfd_arch_info_type *default_bfd_arch = &DEFAULT_BFD_ARCH; | |
650 | #else | |
4b9b3959 | 651 | static const bfd_arch_info_type *default_bfd_arch; |
1ba607ad AC |
652 | #endif |
653 | ||
654 | #ifdef DEFAULT_BFD_VEC | |
655 | extern const bfd_target DEFAULT_BFD_VEC; | |
656 | static const bfd_target *default_bfd_vec = &DEFAULT_BFD_VEC; | |
657 | #else | |
658 | static const bfd_target *default_bfd_vec; | |
659 | #endif | |
660 | ||
b4a20239 AC |
661 | void |
662 | initialize_current_architecture (void) | |
663 | { | |
664 | const char **arches = gdbarch_printable_names (); | |
b4a20239 | 665 | |
1ba607ad AC |
666 | /* determine a default architecture and byte order. */ |
667 | struct gdbarch_info info; | |
668 | memset (&info, 0, sizeof (info)); | |
669 | ||
670 | /* Find a default architecture. */ | |
671 | if (info.bfd_arch_info == NULL | |
672 | && default_bfd_arch != NULL) | |
673 | info.bfd_arch_info = default_bfd_arch; | |
674 | if (info.bfd_arch_info == NULL) | |
b4a20239 | 675 | { |
1ba607ad AC |
676 | /* Choose the architecture by taking the first one |
677 | alphabetically. */ | |
678 | const char *chosen = arches[0]; | |
b4a20239 | 679 | const char **arch; |
b4a20239 AC |
680 | for (arch = arches; *arch != NULL; arch++) |
681 | { | |
b4a20239 AC |
682 | if (strcmp (*arch, chosen) < 0) |
683 | chosen = *arch; | |
684 | } | |
685 | if (chosen == NULL) | |
8e65ff28 AC |
686 | internal_error (__FILE__, __LINE__, |
687 | "initialize_current_architecture: No arch"); | |
b4a20239 AC |
688 | info.bfd_arch_info = bfd_scan_arch (chosen); |
689 | if (info.bfd_arch_info == NULL) | |
8e65ff28 AC |
690 | internal_error (__FILE__, __LINE__, |
691 | "initialize_current_architecture: Arch not found"); | |
1ba607ad AC |
692 | } |
693 | ||
694 | /* take several guesses at a byte order. */ | |
695 | /* NB: can't use TARGET_BYTE_ORDER_DEFAULT as its definition is | |
696 | forced above. */ | |
697 | if (info.byte_order == 0 | |
698 | && default_bfd_vec != NULL) | |
699 | { | |
700 | /* Extract BFD's default vector's byte order. */ | |
701 | switch (default_bfd_vec->byteorder) | |
702 | { | |
703 | case BFD_ENDIAN_BIG: | |
704 | info.byte_order = BIG_ENDIAN; | |
705 | break; | |
706 | case BFD_ENDIAN_LITTLE: | |
707 | info.byte_order = LITTLE_ENDIAN; | |
708 | break; | |
709 | default: | |
710 | break; | |
711 | } | |
712 | } | |
713 | if (info.byte_order == 0) | |
714 | { | |
715 | /* look for ``*el-*'' in the target name. */ | |
716 | const char *chp; | |
717 | chp = strchr (target_name, '-'); | |
718 | if (chp != NULL | |
719 | && chp - 2 >= target_name | |
720 | && strncmp (chp - 2, "el", 2) == 0) | |
721 | info.byte_order = LITTLE_ENDIAN; | |
722 | } | |
723 | if (info.byte_order == 0) | |
724 | { | |
725 | /* Wire it to big-endian!!! */ | |
726 | info.byte_order = BIG_ENDIAN; | |
727 | } | |
728 | ||
729 | if (GDB_MULTI_ARCH) | |
730 | { | |
16f33e29 AC |
731 | if (! gdbarch_update_p (info)) |
732 | { | |
8e65ff28 AC |
733 | internal_error (__FILE__, __LINE__, |
734 | "initialize_current_architecture: Selection of initial architecture failed"); | |
16f33e29 | 735 | } |
b4a20239 AC |
736 | } |
737 | ||
1ba607ad AC |
738 | /* Create the ``set architecture'' command appending ``auto'' to the |
739 | list of architectures. */ | |
b4a20239 AC |
740 | { |
741 | struct cmd_list_element *c; | |
742 | /* Append ``auto''. */ | |
743 | int nr; | |
744 | for (nr = 0; arches[nr] != NULL; nr++); | |
745 | arches = xrealloc (arches, sizeof (char*) * (nr + 2)); | |
746 | arches[nr + 0] = "auto"; | |
747 | arches[nr + 1] = NULL; | |
748 | /* FIXME: add_set_enum_cmd() uses an array of ``char *'' instead | |
749 | of ``const char *''. We just happen to know that the casts are | |
750 | safe. */ | |
751 | c = add_set_enum_cmd ("architecture", class_support, | |
53904c9e | 752 | arches, &set_architecture_string, |
b4a20239 AC |
753 | "Set architecture of target.", |
754 | &setlist); | |
755 | c->function.sfunc = set_architecture; | |
756 | add_alias_cmd ("processor", "architecture", class_support, 1, &setlist); | |
757 | /* Don't use set_from_show - need to print both auto/manual and | |
758 | current setting. */ | |
759 | add_cmd ("architecture", class_support, show_architecture, | |
760 | "Show the current target architecture", &showlist); | |
761 | c = add_cmd ("architecture", class_support, info_architecture, | |
762 | "List supported target architectures", &infolist); | |
763 | deprecate_cmd (c, "set architecture"); | |
764 | } | |
765 | } | |
766 | ||
767 | ||
c0e8c252 AC |
768 | /* */ |
769 | ||
b4a20239 | 770 | extern initialize_file_ftype _initialize_gdbarch_utils; |
c0e8c252 AC |
771 | |
772 | void | |
b4a20239 | 773 | _initialize_gdbarch_utils (void) |
c0e8c252 | 774 | { |
b4a20239 AC |
775 | struct cmd_list_element *c; |
776 | c = add_set_enum_cmd ("endian", class_support, | |
777 | endian_enum, &set_endian_string, | |
778 | "Set endianness of target.", | |
779 | &setlist); | |
780 | c->function.sfunc = set_endian; | |
781 | /* Don't use set_from_show - need to print both auto/manual and | |
782 | current setting. */ | |
783 | add_cmd ("endian", class_support, show_endian, | |
784 | "Show the current byte-order", &showlist); | |
c0e8c252 | 785 | } |