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 | { | |
39f77062 | 255 | ptid_t wait_ptid; |
e02bc4cc DS |
256 | struct target_waitstatus wait_status; |
257 | ||
258 | /* Get the last target status returned by target_wait(). */ | |
39f77062 | 259 | get_last_target_status (&wait_ptid, &wait_status); |
e02bc4cc DS |
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 | ||
39f77062 KB |
268 | if (!ptid_equal (wait_ptid, minus_one_ptid) |
269 | && !ptid_equal (inferior_ptid, wait_ptid)) | |
e02bc4cc DS |
270 | { |
271 | /* Switched over from WAIT_PID. */ | |
39f77062 | 272 | CORE_ADDR wait_pc = read_pc_pid (wait_ptid); |
e02bc4cc DS |
273 | |
274 | /* Avoid switching where it wouldn't do any good, i.e. if both | |
275 | threads are at the same breakpoint. */ | |
276 | if (wait_pc != read_pc () && breakpoint_here_p (wait_pc)) | |
277 | { | |
278 | if (select_it) | |
279 | { | |
280 | /* User hasn't deleted the breakpoint. Switch back to | |
281 | WAIT_PID and return non-zero. */ | |
39f77062 | 282 | inferior_ptid = wait_ptid; |
e02bc4cc DS |
283 | |
284 | /* FIXME: This stuff came from switch_to_thread() in | |
285 | thread.c (which should probably be a public function). */ | |
286 | flush_cached_frames (); | |
287 | registers_changed (); | |
288 | stop_pc = wait_pc; | |
289 | select_frame (get_current_frame (), 0); | |
290 | } | |
291 | ||
292 | return 1; | |
293 | } | |
294 | } | |
295 | return 0; | |
296 | ||
297 | } | |
298 | ||
b4a20239 AC |
299 | /* Functions to manipulate the endianness of the target. */ |
300 | ||
301 | #ifdef TARGET_BYTE_ORDER_SELECTABLE | |
302 | /* compat - Catch old targets that expect a selectable byte-order to | |
303 | default to BIG_ENDIAN */ | |
304 | #ifndef TARGET_BYTE_ORDER_DEFAULT | |
305 | #define TARGET_BYTE_ORDER_DEFAULT BIG_ENDIAN | |
306 | #endif | |
307 | #endif | |
308 | #if !TARGET_BYTE_ORDER_SELECTABLE_P | |
309 | #ifndef TARGET_BYTE_ORDER_DEFAULT | |
310 | /* compat - Catch old non byte-order selectable targets that do not | |
311 | define TARGET_BYTE_ORDER_DEFAULT and instead expect | |
312 | TARGET_BYTE_ORDER to be used as the default. For targets that | |
313 | defined neither TARGET_BYTE_ORDER nor TARGET_BYTE_ORDER_DEFAULT the | |
314 | below will get a strange compiler warning. */ | |
315 | #define TARGET_BYTE_ORDER_DEFAULT TARGET_BYTE_ORDER | |
316 | #endif | |
317 | #endif | |
318 | #ifndef TARGET_BYTE_ORDER_DEFAULT | |
319 | #define TARGET_BYTE_ORDER_DEFAULT BIG_ENDIAN /* arbitrary */ | |
320 | #endif | |
1ba607ad AC |
321 | /* ``target_byte_order'' is only used when non- multi-arch. |
322 | Multi-arch targets obtain the current byte order using | |
323 | TARGET_BYTE_ORDER which is controlled by gdbarch.*. */ | |
b4a20239 AC |
324 | int target_byte_order = TARGET_BYTE_ORDER_DEFAULT; |
325 | int target_byte_order_auto = 1; | |
326 | ||
53904c9e AC |
327 | static const char endian_big[] = "big"; |
328 | static const char endian_little[] = "little"; | |
329 | static const char endian_auto[] = "auto"; | |
330 | static const char *endian_enum[] = | |
b4a20239 AC |
331 | { |
332 | endian_big, | |
333 | endian_little, | |
334 | endian_auto, | |
335 | NULL, | |
336 | }; | |
53904c9e | 337 | static const char *set_endian_string; |
b4a20239 AC |
338 | |
339 | /* Called by ``show endian''. */ | |
340 | ||
341 | static void | |
342 | show_endian (char *args, int from_tty) | |
343 | { | |
344 | if (TARGET_BYTE_ORDER_AUTO) | |
345 | printf_unfiltered ("The target endianness is set automatically (currently %s endian)\n", | |
346 | (TARGET_BYTE_ORDER == BIG_ENDIAN ? "big" : "little")); | |
347 | else | |
348 | printf_unfiltered ("The target is assumed to be %s endian\n", | |
349 | (TARGET_BYTE_ORDER == BIG_ENDIAN ? "big" : "little")); | |
350 | } | |
351 | ||
352 | static void | |
353 | set_endian (char *ignore_args, int from_tty, struct cmd_list_element *c) | |
354 | { | |
355 | if (!TARGET_BYTE_ORDER_SELECTABLE_P) | |
356 | { | |
357 | printf_unfiltered ("Byte order is not selectable."); | |
358 | } | |
359 | else if (set_endian_string == endian_auto) | |
360 | { | |
361 | target_byte_order_auto = 1; | |
362 | } | |
363 | else if (set_endian_string == endian_little) | |
364 | { | |
b4a20239 AC |
365 | target_byte_order_auto = 0; |
366 | if (GDB_MULTI_ARCH) | |
367 | { | |
368 | struct gdbarch_info info; | |
369 | memset (&info, 0, sizeof info); | |
370 | info.byte_order = LITTLE_ENDIAN; | |
16f33e29 AC |
371 | if (! gdbarch_update_p (info)) |
372 | { | |
373 | printf_unfiltered ("Little endian target not supported by GDB\n"); | |
374 | } | |
b4a20239 | 375 | } |
1ba607ad AC |
376 | else |
377 | { | |
378 | target_byte_order = LITTLE_ENDIAN; | |
379 | } | |
b4a20239 AC |
380 | } |
381 | else if (set_endian_string == endian_big) | |
382 | { | |
b4a20239 AC |
383 | target_byte_order_auto = 0; |
384 | if (GDB_MULTI_ARCH) | |
385 | { | |
386 | struct gdbarch_info info; | |
387 | memset (&info, 0, sizeof info); | |
388 | info.byte_order = BIG_ENDIAN; | |
16f33e29 AC |
389 | if (! gdbarch_update_p (info)) |
390 | { | |
391 | printf_unfiltered ("Big endian target not supported by GDB\n"); | |
392 | } | |
b4a20239 | 393 | } |
1ba607ad AC |
394 | else |
395 | { | |
396 | target_byte_order = BIG_ENDIAN; | |
397 | } | |
b4a20239 AC |
398 | } |
399 | else | |
8e65ff28 AC |
400 | internal_error (__FILE__, __LINE__, |
401 | "set_endian: bad value"); | |
b4a20239 AC |
402 | show_endian (NULL, from_tty); |
403 | } | |
404 | ||
405 | /* Set the endianness from a BFD. */ | |
406 | ||
407 | static void | |
408 | set_endian_from_file (bfd *abfd) | |
409 | { | |
1ba607ad | 410 | if (GDB_MULTI_ARCH) |
8e65ff28 AC |
411 | internal_error (__FILE__, __LINE__, |
412 | "set_endian_from_file: not for multi-arch"); | |
b4a20239 AC |
413 | if (TARGET_BYTE_ORDER_SELECTABLE_P) |
414 | { | |
415 | int want; | |
416 | ||
417 | if (bfd_big_endian (abfd)) | |
418 | want = BIG_ENDIAN; | |
419 | else | |
420 | want = LITTLE_ENDIAN; | |
421 | if (TARGET_BYTE_ORDER_AUTO) | |
422 | target_byte_order = want; | |
423 | else if (TARGET_BYTE_ORDER != want) | |
424 | warning ("%s endian file does not match %s endian target.", | |
425 | want == BIG_ENDIAN ? "big" : "little", | |
426 | TARGET_BYTE_ORDER == BIG_ENDIAN ? "big" : "little"); | |
427 | } | |
428 | else | |
429 | { | |
430 | if (bfd_big_endian (abfd) | |
431 | ? TARGET_BYTE_ORDER != BIG_ENDIAN | |
432 | : TARGET_BYTE_ORDER == BIG_ENDIAN) | |
433 | warning ("%s endian file does not match %s endian target.", | |
434 | bfd_big_endian (abfd) ? "big" : "little", | |
435 | TARGET_BYTE_ORDER == BIG_ENDIAN ? "big" : "little"); | |
436 | } | |
437 | } | |
438 | ||
439 | ||
440 | /* Functions to manipulate the architecture of the target */ | |
441 | ||
442 | enum set_arch { set_arch_auto, set_arch_manual }; | |
443 | ||
444 | int target_architecture_auto = 1; | |
445 | ||
53904c9e | 446 | const char *set_architecture_string; |
b4a20239 AC |
447 | |
448 | /* Old way of changing the current architecture. */ | |
449 | ||
450 | extern const struct bfd_arch_info bfd_default_arch_struct; | |
451 | const struct bfd_arch_info *target_architecture = &bfd_default_arch_struct; | |
452 | int (*target_architecture_hook) (const struct bfd_arch_info *ap); | |
453 | ||
454 | static int | |
455 | arch_ok (const struct bfd_arch_info *arch) | |
456 | { | |
457 | if (GDB_MULTI_ARCH) | |
8e65ff28 AC |
458 | internal_error (__FILE__, __LINE__, |
459 | "arch_ok: not multi-arched"); | |
b4a20239 AC |
460 | /* Should be performing the more basic check that the binary is |
461 | compatible with GDB. */ | |
462 | /* Check with the target that the architecture is valid. */ | |
463 | return (target_architecture_hook == NULL | |
464 | || target_architecture_hook (arch)); | |
465 | } | |
466 | ||
467 | static void | |
468 | set_arch (const struct bfd_arch_info *arch, | |
469 | enum set_arch type) | |
470 | { | |
471 | if (GDB_MULTI_ARCH) | |
8e65ff28 AC |
472 | internal_error (__FILE__, __LINE__, |
473 | "set_arch: not multi-arched"); | |
b4a20239 AC |
474 | switch (type) |
475 | { | |
476 | case set_arch_auto: | |
477 | if (!arch_ok (arch)) | |
478 | warning ("Target may not support %s architecture", | |
479 | arch->printable_name); | |
480 | target_architecture = arch; | |
481 | break; | |
482 | case set_arch_manual: | |
483 | if (!arch_ok (arch)) | |
484 | { | |
485 | printf_unfiltered ("Target does not support `%s' architecture.\n", | |
486 | arch->printable_name); | |
487 | } | |
488 | else | |
489 | { | |
490 | target_architecture_auto = 0; | |
491 | target_architecture = arch; | |
492 | } | |
493 | break; | |
494 | } | |
495 | if (gdbarch_debug) | |
4b9b3959 | 496 | gdbarch_dump (current_gdbarch, gdb_stdlog); |
b4a20239 AC |
497 | } |
498 | ||
499 | /* Set the architecture from arch/machine (deprecated) */ | |
500 | ||
501 | void | |
502 | set_architecture_from_arch_mach (enum bfd_architecture arch, | |
503 | unsigned long mach) | |
504 | { | |
505 | const struct bfd_arch_info *wanted = bfd_lookup_arch (arch, mach); | |
506 | if (GDB_MULTI_ARCH) | |
8e65ff28 AC |
507 | internal_error (__FILE__, __LINE__, |
508 | "set_architecture_from_arch_mach: not multi-arched"); | |
b4a20239 AC |
509 | if (wanted != NULL) |
510 | set_arch (wanted, set_arch_manual); | |
511 | else | |
8e65ff28 AC |
512 | internal_error (__FILE__, __LINE__, |
513 | "gdbarch: hardwired architecture/machine not recognized"); | |
b4a20239 AC |
514 | } |
515 | ||
516 | /* Set the architecture from a BFD (deprecated) */ | |
517 | ||
518 | static void | |
519 | set_architecture_from_file (bfd *abfd) | |
520 | { | |
521 | const struct bfd_arch_info *wanted = bfd_get_arch_info (abfd); | |
522 | if (GDB_MULTI_ARCH) | |
8e65ff28 AC |
523 | internal_error (__FILE__, __LINE__, |
524 | "set_architecture_from_file: not multi-arched"); | |
b4a20239 AC |
525 | if (target_architecture_auto) |
526 | { | |
527 | set_arch (wanted, set_arch_auto); | |
528 | } | |
529 | else if (wanted != target_architecture) | |
530 | { | |
531 | warning ("%s architecture file may be incompatible with %s target.", | |
532 | wanted->printable_name, | |
533 | target_architecture->printable_name); | |
534 | } | |
535 | } | |
536 | ||
537 | ||
538 | /* Called if the user enters ``show architecture'' without an | |
539 | argument. */ | |
540 | ||
541 | static void | |
542 | show_architecture (char *args, int from_tty) | |
543 | { | |
544 | const char *arch; | |
545 | arch = TARGET_ARCHITECTURE->printable_name; | |
546 | if (target_architecture_auto) | |
547 | printf_filtered ("The target architecture is set automatically (currently %s)\n", arch); | |
548 | else | |
549 | printf_filtered ("The target architecture is assumed to be %s\n", arch); | |
550 | } | |
551 | ||
552 | ||
553 | /* Called if the user enters ``set architecture'' with or without an | |
554 | argument. */ | |
555 | ||
556 | static void | |
557 | set_architecture (char *ignore_args, int from_tty, struct cmd_list_element *c) | |
558 | { | |
559 | if (strcmp (set_architecture_string, "auto") == 0) | |
560 | { | |
561 | target_architecture_auto = 1; | |
562 | } | |
563 | else if (GDB_MULTI_ARCH) | |
564 | { | |
565 | struct gdbarch_info info; | |
566 | memset (&info, 0, sizeof info); | |
567 | info.bfd_arch_info = bfd_scan_arch (set_architecture_string); | |
568 | if (info.bfd_arch_info == NULL) | |
8e65ff28 AC |
569 | internal_error (__FILE__, __LINE__, |
570 | "set_architecture: bfd_scan_arch failed"); | |
16f33e29 | 571 | if (gdbarch_update_p (info)) |
b4a20239 AC |
572 | target_architecture_auto = 0; |
573 | else | |
ec3d358c | 574 | printf_unfiltered ("Architecture `%s' not recognized.\n", |
b4a20239 AC |
575 | set_architecture_string); |
576 | } | |
577 | else | |
578 | { | |
579 | const struct bfd_arch_info *arch | |
580 | = bfd_scan_arch (set_architecture_string); | |
581 | if (arch == NULL) | |
8e65ff28 AC |
582 | internal_error (__FILE__, __LINE__, |
583 | "set_architecture: bfd_scan_arch failed"); | |
b4a20239 AC |
584 | set_arch (arch, set_arch_manual); |
585 | } | |
586 | show_architecture (NULL, from_tty); | |
587 | } | |
588 | ||
589 | /* Called if the user enters ``info architecture'' without an argument. */ | |
590 | ||
591 | static void | |
592 | info_architecture (char *args, int from_tty) | |
593 | { | |
594 | printf_filtered ("Available architectures are:\n"); | |
595 | if (GDB_MULTI_ARCH) | |
596 | { | |
597 | const char **arches = gdbarch_printable_names (); | |
598 | const char **arch; | |
599 | for (arch = arches; *arch != NULL; arch++) | |
600 | { | |
601 | printf_filtered (" %s", *arch); | |
602 | } | |
b8c9b27d | 603 | xfree (arches); |
b4a20239 AC |
604 | } |
605 | else | |
606 | { | |
607 | enum bfd_architecture a; | |
608 | for (a = bfd_arch_obscure + 1; a < bfd_arch_last; a++) | |
609 | { | |
610 | const struct bfd_arch_info *ap; | |
611 | for (ap = bfd_lookup_arch (a, 0); | |
612 | ap != NULL; | |
613 | ap = ap->next) | |
614 | { | |
615 | printf_filtered (" %s", ap->printable_name); | |
616 | ap = ap->next; | |
617 | } | |
618 | } | |
619 | } | |
620 | printf_filtered ("\n"); | |
621 | } | |
622 | ||
b7d6b182 | 623 | /* Set the dynamic target-system-dependent parameters (architecture, |
b4a20239 AC |
624 | byte-order) using information found in the BFD */ |
625 | ||
626 | void | |
fba45db2 | 627 | set_gdbarch_from_file (bfd *abfd) |
b4a20239 AC |
628 | { |
629 | if (GDB_MULTI_ARCH) | |
630 | { | |
631 | struct gdbarch_info info; | |
632 | memset (&info, 0, sizeof info); | |
633 | info.abfd = abfd; | |
16f33e29 | 634 | if (! gdbarch_update_p (info)) |
ec3d358c | 635 | error ("Architecture of file not recognized.\n"); |
b4a20239 AC |
636 | } |
637 | else | |
638 | { | |
639 | set_architecture_from_file (abfd); | |
640 | set_endian_from_file (abfd); | |
641 | } | |
642 | } | |
643 | ||
644 | /* Initialize the current architecture. Update the ``set | |
645 | architecture'' command so that it specifies a list of valid | |
646 | architectures. */ | |
647 | ||
1ba607ad AC |
648 | #ifdef DEFAULT_BFD_ARCH |
649 | extern const bfd_arch_info_type DEFAULT_BFD_ARCH; | |
650 | static const bfd_arch_info_type *default_bfd_arch = &DEFAULT_BFD_ARCH; | |
651 | #else | |
4b9b3959 | 652 | static const bfd_arch_info_type *default_bfd_arch; |
1ba607ad AC |
653 | #endif |
654 | ||
655 | #ifdef DEFAULT_BFD_VEC | |
656 | extern const bfd_target DEFAULT_BFD_VEC; | |
657 | static const bfd_target *default_bfd_vec = &DEFAULT_BFD_VEC; | |
658 | #else | |
659 | static const bfd_target *default_bfd_vec; | |
660 | #endif | |
661 | ||
b4a20239 AC |
662 | void |
663 | initialize_current_architecture (void) | |
664 | { | |
665 | const char **arches = gdbarch_printable_names (); | |
b4a20239 | 666 | |
1ba607ad AC |
667 | /* determine a default architecture and byte order. */ |
668 | struct gdbarch_info info; | |
669 | memset (&info, 0, sizeof (info)); | |
670 | ||
671 | /* Find a default architecture. */ | |
672 | if (info.bfd_arch_info == NULL | |
673 | && default_bfd_arch != NULL) | |
674 | info.bfd_arch_info = default_bfd_arch; | |
675 | if (info.bfd_arch_info == NULL) | |
b4a20239 | 676 | { |
1ba607ad AC |
677 | /* Choose the architecture by taking the first one |
678 | alphabetically. */ | |
679 | const char *chosen = arches[0]; | |
b4a20239 | 680 | const char **arch; |
b4a20239 AC |
681 | for (arch = arches; *arch != NULL; arch++) |
682 | { | |
b4a20239 AC |
683 | if (strcmp (*arch, chosen) < 0) |
684 | chosen = *arch; | |
685 | } | |
686 | if (chosen == NULL) | |
8e65ff28 AC |
687 | internal_error (__FILE__, __LINE__, |
688 | "initialize_current_architecture: No arch"); | |
b4a20239 AC |
689 | info.bfd_arch_info = bfd_scan_arch (chosen); |
690 | if (info.bfd_arch_info == NULL) | |
8e65ff28 AC |
691 | internal_error (__FILE__, __LINE__, |
692 | "initialize_current_architecture: Arch not found"); | |
1ba607ad AC |
693 | } |
694 | ||
695 | /* take several guesses at a byte order. */ | |
696 | /* NB: can't use TARGET_BYTE_ORDER_DEFAULT as its definition is | |
697 | forced above. */ | |
698 | if (info.byte_order == 0 | |
699 | && default_bfd_vec != NULL) | |
700 | { | |
701 | /* Extract BFD's default vector's byte order. */ | |
702 | switch (default_bfd_vec->byteorder) | |
703 | { | |
704 | case BFD_ENDIAN_BIG: | |
705 | info.byte_order = BIG_ENDIAN; | |
706 | break; | |
707 | case BFD_ENDIAN_LITTLE: | |
708 | info.byte_order = LITTLE_ENDIAN; | |
709 | break; | |
710 | default: | |
711 | break; | |
712 | } | |
713 | } | |
714 | if (info.byte_order == 0) | |
715 | { | |
716 | /* look for ``*el-*'' in the target name. */ | |
717 | const char *chp; | |
718 | chp = strchr (target_name, '-'); | |
719 | if (chp != NULL | |
720 | && chp - 2 >= target_name | |
721 | && strncmp (chp - 2, "el", 2) == 0) | |
722 | info.byte_order = LITTLE_ENDIAN; | |
723 | } | |
724 | if (info.byte_order == 0) | |
725 | { | |
726 | /* Wire it to big-endian!!! */ | |
727 | info.byte_order = BIG_ENDIAN; | |
728 | } | |
729 | ||
730 | if (GDB_MULTI_ARCH) | |
731 | { | |
16f33e29 AC |
732 | if (! gdbarch_update_p (info)) |
733 | { | |
8e65ff28 AC |
734 | internal_error (__FILE__, __LINE__, |
735 | "initialize_current_architecture: Selection of initial architecture failed"); | |
16f33e29 | 736 | } |
b4a20239 AC |
737 | } |
738 | ||
1ba607ad AC |
739 | /* Create the ``set architecture'' command appending ``auto'' to the |
740 | list of architectures. */ | |
b4a20239 AC |
741 | { |
742 | struct cmd_list_element *c; | |
743 | /* Append ``auto''. */ | |
744 | int nr; | |
745 | for (nr = 0; arches[nr] != NULL; nr++); | |
746 | arches = xrealloc (arches, sizeof (char*) * (nr + 2)); | |
747 | arches[nr + 0] = "auto"; | |
748 | arches[nr + 1] = NULL; | |
749 | /* FIXME: add_set_enum_cmd() uses an array of ``char *'' instead | |
750 | of ``const char *''. We just happen to know that the casts are | |
751 | safe. */ | |
752 | c = add_set_enum_cmd ("architecture", class_support, | |
53904c9e | 753 | arches, &set_architecture_string, |
b4a20239 AC |
754 | "Set architecture of target.", |
755 | &setlist); | |
756 | c->function.sfunc = set_architecture; | |
757 | add_alias_cmd ("processor", "architecture", class_support, 1, &setlist); | |
758 | /* Don't use set_from_show - need to print both auto/manual and | |
759 | current setting. */ | |
760 | add_cmd ("architecture", class_support, show_architecture, | |
761 | "Show the current target architecture", &showlist); | |
762 | c = add_cmd ("architecture", class_support, info_architecture, | |
763 | "List supported target architectures", &infolist); | |
764 | deprecate_cmd (c, "set architecture"); | |
765 | } | |
766 | } | |
767 | ||
768 | ||
c0e8c252 AC |
769 | /* */ |
770 | ||
b4a20239 | 771 | extern initialize_file_ftype _initialize_gdbarch_utils; |
c0e8c252 AC |
772 | |
773 | void | |
b4a20239 | 774 | _initialize_gdbarch_utils (void) |
c0e8c252 | 775 | { |
b4a20239 AC |
776 | struct cmd_list_element *c; |
777 | c = add_set_enum_cmd ("endian", class_support, | |
778 | endian_enum, &set_endian_string, | |
779 | "Set endianness of target.", | |
780 | &setlist); | |
781 | c->function.sfunc = set_endian; | |
782 | /* Don't use set_from_show - need to print both auto/manual and | |
783 | current setting. */ | |
784 | add_cmd ("endian", class_support, show_endian, | |
785 | "Show the current byte-order", &showlist); | |
c0e8c252 | 786 | } |