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 | |
875e1767 | 225 | core_addr_identity (CORE_ADDR addr) |
f517ea4e PS |
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 | 260 | |
8849f47d JL |
261 | /* Make sure we were stopped either at a breakpoint, or because |
262 | of a Ctrl-C. */ | |
e02bc4cc | 263 | if (wait_status.kind != TARGET_WAITKIND_STOPPED |
8849f47d JL |
264 | || (wait_status.value.sig != TARGET_SIGNAL_TRAP && |
265 | wait_status.value.sig != TARGET_SIGNAL_INT)) | |
e02bc4cc DS |
266 | { |
267 | return 0; | |
268 | } | |
269 | ||
39f77062 KB |
270 | if (!ptid_equal (wait_ptid, minus_one_ptid) |
271 | && !ptid_equal (inferior_ptid, wait_ptid)) | |
e02bc4cc DS |
272 | { |
273 | /* Switched over from WAIT_PID. */ | |
39f77062 | 274 | CORE_ADDR wait_pc = read_pc_pid (wait_ptid); |
e02bc4cc | 275 | |
8849f47d | 276 | if (wait_pc != read_pc ()) |
e02bc4cc DS |
277 | { |
278 | if (select_it) | |
279 | { | |
8849f47d | 280 | /* Switch back to WAIT_PID thread. */ |
39f77062 | 281 | inferior_ptid = wait_ptid; |
e02bc4cc DS |
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 | } | |
8849f47d JL |
290 | /* We return 1 to indicate that there is a breakpoint here, |
291 | so we need to step over it before continuing to avoid | |
292 | hitting it straight away. */ | |
293 | if (breakpoint_here_p (wait_pc)) | |
294 | { | |
295 | return 1; | |
296 | } | |
e02bc4cc DS |
297 | } |
298 | } | |
299 | return 0; | |
300 | ||
301 | } | |
302 | ||
10312cc4 AC |
303 | void |
304 | init_frame_pc_noop (int fromleaf, struct frame_info *prev) | |
305 | { | |
306 | return; | |
307 | } | |
308 | ||
7824d2f2 AC |
309 | void |
310 | init_frame_pc_default (int fromleaf, struct frame_info *prev) | |
311 | { | |
312 | if (fromleaf) | |
313 | prev->pc = SAVED_PC_AFTER_CALL (prev->next); | |
314 | else if (prev->next != NULL) | |
315 | prev->pc = FRAME_SAVED_PC (prev->next); | |
316 | else | |
317 | prev->pc = read_pc (); | |
318 | } | |
319 | ||
01fb7433 AC |
320 | int |
321 | cannot_register_not (int regnum) | |
322 | { | |
323 | return 0; | |
324 | } | |
325 | \f | |
b4a20239 AC |
326 | /* Functions to manipulate the endianness of the target. */ |
327 | ||
328 | #ifdef TARGET_BYTE_ORDER_SELECTABLE | |
329 | /* compat - Catch old targets that expect a selectable byte-order to | |
330 | default to BIG_ENDIAN */ | |
331 | #ifndef TARGET_BYTE_ORDER_DEFAULT | |
332 | #define TARGET_BYTE_ORDER_DEFAULT BIG_ENDIAN | |
333 | #endif | |
334 | #endif | |
335 | #if !TARGET_BYTE_ORDER_SELECTABLE_P | |
336 | #ifndef TARGET_BYTE_ORDER_DEFAULT | |
337 | /* compat - Catch old non byte-order selectable targets that do not | |
338 | define TARGET_BYTE_ORDER_DEFAULT and instead expect | |
339 | TARGET_BYTE_ORDER to be used as the default. For targets that | |
340 | defined neither TARGET_BYTE_ORDER nor TARGET_BYTE_ORDER_DEFAULT the | |
341 | below will get a strange compiler warning. */ | |
342 | #define TARGET_BYTE_ORDER_DEFAULT TARGET_BYTE_ORDER | |
343 | #endif | |
344 | #endif | |
345 | #ifndef TARGET_BYTE_ORDER_DEFAULT | |
346 | #define TARGET_BYTE_ORDER_DEFAULT BIG_ENDIAN /* arbitrary */ | |
347 | #endif | |
1ba607ad AC |
348 | /* ``target_byte_order'' is only used when non- multi-arch. |
349 | Multi-arch targets obtain the current byte order using | |
350 | TARGET_BYTE_ORDER which is controlled by gdbarch.*. */ | |
b4a20239 AC |
351 | int target_byte_order = TARGET_BYTE_ORDER_DEFAULT; |
352 | int target_byte_order_auto = 1; | |
353 | ||
53904c9e AC |
354 | static const char endian_big[] = "big"; |
355 | static const char endian_little[] = "little"; | |
356 | static const char endian_auto[] = "auto"; | |
357 | static const char *endian_enum[] = | |
b4a20239 AC |
358 | { |
359 | endian_big, | |
360 | endian_little, | |
361 | endian_auto, | |
362 | NULL, | |
363 | }; | |
53904c9e | 364 | static const char *set_endian_string; |
b4a20239 AC |
365 | |
366 | /* Called by ``show endian''. */ | |
367 | ||
368 | static void | |
369 | show_endian (char *args, int from_tty) | |
370 | { | |
371 | if (TARGET_BYTE_ORDER_AUTO) | |
372 | printf_unfiltered ("The target endianness is set automatically (currently %s endian)\n", | |
373 | (TARGET_BYTE_ORDER == BIG_ENDIAN ? "big" : "little")); | |
374 | else | |
375 | printf_unfiltered ("The target is assumed to be %s endian\n", | |
376 | (TARGET_BYTE_ORDER == BIG_ENDIAN ? "big" : "little")); | |
377 | } | |
378 | ||
379 | static void | |
380 | set_endian (char *ignore_args, int from_tty, struct cmd_list_element *c) | |
381 | { | |
382 | if (!TARGET_BYTE_ORDER_SELECTABLE_P) | |
383 | { | |
384 | printf_unfiltered ("Byte order is not selectable."); | |
385 | } | |
386 | else if (set_endian_string == endian_auto) | |
387 | { | |
388 | target_byte_order_auto = 1; | |
389 | } | |
390 | else if (set_endian_string == endian_little) | |
391 | { | |
b4a20239 AC |
392 | target_byte_order_auto = 0; |
393 | if (GDB_MULTI_ARCH) | |
394 | { | |
395 | struct gdbarch_info info; | |
396 | memset (&info, 0, sizeof info); | |
397 | info.byte_order = LITTLE_ENDIAN; | |
16f33e29 AC |
398 | if (! gdbarch_update_p (info)) |
399 | { | |
400 | printf_unfiltered ("Little endian target not supported by GDB\n"); | |
401 | } | |
b4a20239 | 402 | } |
1ba607ad AC |
403 | else |
404 | { | |
405 | target_byte_order = LITTLE_ENDIAN; | |
406 | } | |
b4a20239 AC |
407 | } |
408 | else if (set_endian_string == endian_big) | |
409 | { | |
b4a20239 AC |
410 | target_byte_order_auto = 0; |
411 | if (GDB_MULTI_ARCH) | |
412 | { | |
413 | struct gdbarch_info info; | |
414 | memset (&info, 0, sizeof info); | |
415 | info.byte_order = BIG_ENDIAN; | |
16f33e29 AC |
416 | if (! gdbarch_update_p (info)) |
417 | { | |
418 | printf_unfiltered ("Big endian target not supported by GDB\n"); | |
419 | } | |
b4a20239 | 420 | } |
1ba607ad AC |
421 | else |
422 | { | |
423 | target_byte_order = BIG_ENDIAN; | |
424 | } | |
b4a20239 AC |
425 | } |
426 | else | |
8e65ff28 AC |
427 | internal_error (__FILE__, __LINE__, |
428 | "set_endian: bad value"); | |
b4a20239 AC |
429 | show_endian (NULL, from_tty); |
430 | } | |
431 | ||
432 | /* Set the endianness from a BFD. */ | |
433 | ||
434 | static void | |
435 | set_endian_from_file (bfd *abfd) | |
436 | { | |
1ba607ad | 437 | if (GDB_MULTI_ARCH) |
8e65ff28 AC |
438 | internal_error (__FILE__, __LINE__, |
439 | "set_endian_from_file: not for multi-arch"); | |
b4a20239 AC |
440 | if (TARGET_BYTE_ORDER_SELECTABLE_P) |
441 | { | |
442 | int want; | |
443 | ||
444 | if (bfd_big_endian (abfd)) | |
445 | want = BIG_ENDIAN; | |
446 | else | |
447 | want = LITTLE_ENDIAN; | |
448 | if (TARGET_BYTE_ORDER_AUTO) | |
449 | target_byte_order = want; | |
450 | else if (TARGET_BYTE_ORDER != want) | |
451 | warning ("%s endian file does not match %s endian target.", | |
452 | want == BIG_ENDIAN ? "big" : "little", | |
453 | TARGET_BYTE_ORDER == BIG_ENDIAN ? "big" : "little"); | |
454 | } | |
455 | else | |
456 | { | |
457 | if (bfd_big_endian (abfd) | |
458 | ? TARGET_BYTE_ORDER != BIG_ENDIAN | |
459 | : TARGET_BYTE_ORDER == BIG_ENDIAN) | |
460 | warning ("%s endian file does not match %s endian target.", | |
461 | bfd_big_endian (abfd) ? "big" : "little", | |
462 | TARGET_BYTE_ORDER == BIG_ENDIAN ? "big" : "little"); | |
463 | } | |
464 | } | |
465 | ||
466 | ||
467 | /* Functions to manipulate the architecture of the target */ | |
468 | ||
469 | enum set_arch { set_arch_auto, set_arch_manual }; | |
470 | ||
471 | int target_architecture_auto = 1; | |
472 | ||
53904c9e | 473 | const char *set_architecture_string; |
b4a20239 AC |
474 | |
475 | /* Old way of changing the current architecture. */ | |
476 | ||
477 | extern const struct bfd_arch_info bfd_default_arch_struct; | |
478 | const struct bfd_arch_info *target_architecture = &bfd_default_arch_struct; | |
479 | int (*target_architecture_hook) (const struct bfd_arch_info *ap); | |
480 | ||
481 | static int | |
482 | arch_ok (const struct bfd_arch_info *arch) | |
483 | { | |
484 | if (GDB_MULTI_ARCH) | |
8e65ff28 AC |
485 | internal_error (__FILE__, __LINE__, |
486 | "arch_ok: not multi-arched"); | |
b4a20239 AC |
487 | /* Should be performing the more basic check that the binary is |
488 | compatible with GDB. */ | |
489 | /* Check with the target that the architecture is valid. */ | |
490 | return (target_architecture_hook == NULL | |
491 | || target_architecture_hook (arch)); | |
492 | } | |
493 | ||
494 | static void | |
495 | set_arch (const struct bfd_arch_info *arch, | |
496 | enum set_arch type) | |
497 | { | |
498 | if (GDB_MULTI_ARCH) | |
8e65ff28 AC |
499 | internal_error (__FILE__, __LINE__, |
500 | "set_arch: not multi-arched"); | |
b4a20239 AC |
501 | switch (type) |
502 | { | |
503 | case set_arch_auto: | |
504 | if (!arch_ok (arch)) | |
505 | warning ("Target may not support %s architecture", | |
506 | arch->printable_name); | |
507 | target_architecture = arch; | |
508 | break; | |
509 | case set_arch_manual: | |
510 | if (!arch_ok (arch)) | |
511 | { | |
512 | printf_unfiltered ("Target does not support `%s' architecture.\n", | |
513 | arch->printable_name); | |
514 | } | |
515 | else | |
516 | { | |
517 | target_architecture_auto = 0; | |
518 | target_architecture = arch; | |
519 | } | |
520 | break; | |
521 | } | |
522 | if (gdbarch_debug) | |
4b9b3959 | 523 | gdbarch_dump (current_gdbarch, gdb_stdlog); |
b4a20239 AC |
524 | } |
525 | ||
526 | /* Set the architecture from arch/machine (deprecated) */ | |
527 | ||
528 | void | |
529 | set_architecture_from_arch_mach (enum bfd_architecture arch, | |
530 | unsigned long mach) | |
531 | { | |
532 | const struct bfd_arch_info *wanted = bfd_lookup_arch (arch, mach); | |
533 | if (GDB_MULTI_ARCH) | |
8e65ff28 AC |
534 | internal_error (__FILE__, __LINE__, |
535 | "set_architecture_from_arch_mach: not multi-arched"); | |
b4a20239 AC |
536 | if (wanted != NULL) |
537 | set_arch (wanted, set_arch_manual); | |
538 | else | |
8e65ff28 AC |
539 | internal_error (__FILE__, __LINE__, |
540 | "gdbarch: hardwired architecture/machine not recognized"); | |
b4a20239 AC |
541 | } |
542 | ||
543 | /* Set the architecture from a BFD (deprecated) */ | |
544 | ||
545 | static void | |
546 | set_architecture_from_file (bfd *abfd) | |
547 | { | |
548 | const struct bfd_arch_info *wanted = bfd_get_arch_info (abfd); | |
549 | if (GDB_MULTI_ARCH) | |
8e65ff28 AC |
550 | internal_error (__FILE__, __LINE__, |
551 | "set_architecture_from_file: not multi-arched"); | |
b4a20239 AC |
552 | if (target_architecture_auto) |
553 | { | |
554 | set_arch (wanted, set_arch_auto); | |
555 | } | |
556 | else if (wanted != target_architecture) | |
557 | { | |
558 | warning ("%s architecture file may be incompatible with %s target.", | |
559 | wanted->printable_name, | |
560 | target_architecture->printable_name); | |
561 | } | |
562 | } | |
563 | ||
564 | ||
565 | /* Called if the user enters ``show architecture'' without an | |
566 | argument. */ | |
567 | ||
568 | static void | |
569 | show_architecture (char *args, int from_tty) | |
570 | { | |
571 | const char *arch; | |
572 | arch = TARGET_ARCHITECTURE->printable_name; | |
573 | if (target_architecture_auto) | |
574 | printf_filtered ("The target architecture is set automatically (currently %s)\n", arch); | |
575 | else | |
576 | printf_filtered ("The target architecture is assumed to be %s\n", arch); | |
577 | } | |
578 | ||
579 | ||
580 | /* Called if the user enters ``set architecture'' with or without an | |
581 | argument. */ | |
582 | ||
583 | static void | |
584 | set_architecture (char *ignore_args, int from_tty, struct cmd_list_element *c) | |
585 | { | |
586 | if (strcmp (set_architecture_string, "auto") == 0) | |
587 | { | |
588 | target_architecture_auto = 1; | |
589 | } | |
590 | else if (GDB_MULTI_ARCH) | |
591 | { | |
592 | struct gdbarch_info info; | |
593 | memset (&info, 0, sizeof info); | |
594 | info.bfd_arch_info = bfd_scan_arch (set_architecture_string); | |
595 | if (info.bfd_arch_info == NULL) | |
8e65ff28 AC |
596 | internal_error (__FILE__, __LINE__, |
597 | "set_architecture: bfd_scan_arch failed"); | |
16f33e29 | 598 | if (gdbarch_update_p (info)) |
b4a20239 AC |
599 | target_architecture_auto = 0; |
600 | else | |
ec3d358c | 601 | printf_unfiltered ("Architecture `%s' not recognized.\n", |
b4a20239 AC |
602 | set_architecture_string); |
603 | } | |
604 | else | |
605 | { | |
606 | const struct bfd_arch_info *arch | |
607 | = bfd_scan_arch (set_architecture_string); | |
608 | if (arch == NULL) | |
8e65ff28 AC |
609 | internal_error (__FILE__, __LINE__, |
610 | "set_architecture: bfd_scan_arch failed"); | |
b4a20239 AC |
611 | set_arch (arch, set_arch_manual); |
612 | } | |
613 | show_architecture (NULL, from_tty); | |
614 | } | |
615 | ||
b7d6b182 | 616 | /* Set the dynamic target-system-dependent parameters (architecture, |
b4a20239 AC |
617 | byte-order) using information found in the BFD */ |
618 | ||
619 | void | |
fba45db2 | 620 | set_gdbarch_from_file (bfd *abfd) |
b4a20239 AC |
621 | { |
622 | if (GDB_MULTI_ARCH) | |
623 | { | |
624 | struct gdbarch_info info; | |
625 | memset (&info, 0, sizeof info); | |
626 | info.abfd = abfd; | |
16f33e29 | 627 | if (! gdbarch_update_p (info)) |
ec3d358c | 628 | error ("Architecture of file not recognized.\n"); |
b4a20239 AC |
629 | } |
630 | else | |
631 | { | |
632 | set_architecture_from_file (abfd); | |
633 | set_endian_from_file (abfd); | |
634 | } | |
635 | } | |
636 | ||
637 | /* Initialize the current architecture. Update the ``set | |
638 | architecture'' command so that it specifies a list of valid | |
639 | architectures. */ | |
640 | ||
1ba607ad AC |
641 | #ifdef DEFAULT_BFD_ARCH |
642 | extern const bfd_arch_info_type DEFAULT_BFD_ARCH; | |
643 | static const bfd_arch_info_type *default_bfd_arch = &DEFAULT_BFD_ARCH; | |
644 | #else | |
4b9b3959 | 645 | static const bfd_arch_info_type *default_bfd_arch; |
1ba607ad AC |
646 | #endif |
647 | ||
648 | #ifdef DEFAULT_BFD_VEC | |
649 | extern const bfd_target DEFAULT_BFD_VEC; | |
650 | static const bfd_target *default_bfd_vec = &DEFAULT_BFD_VEC; | |
651 | #else | |
652 | static const bfd_target *default_bfd_vec; | |
653 | #endif | |
654 | ||
b4a20239 AC |
655 | void |
656 | initialize_current_architecture (void) | |
657 | { | |
658 | const char **arches = gdbarch_printable_names (); | |
b4a20239 | 659 | |
1ba607ad AC |
660 | /* determine a default architecture and byte order. */ |
661 | struct gdbarch_info info; | |
662 | memset (&info, 0, sizeof (info)); | |
663 | ||
664 | /* Find a default architecture. */ | |
665 | if (info.bfd_arch_info == NULL | |
666 | && default_bfd_arch != NULL) | |
667 | info.bfd_arch_info = default_bfd_arch; | |
668 | if (info.bfd_arch_info == NULL) | |
b4a20239 | 669 | { |
1ba607ad AC |
670 | /* Choose the architecture by taking the first one |
671 | alphabetically. */ | |
672 | const char *chosen = arches[0]; | |
b4a20239 | 673 | const char **arch; |
b4a20239 AC |
674 | for (arch = arches; *arch != NULL; arch++) |
675 | { | |
b4a20239 AC |
676 | if (strcmp (*arch, chosen) < 0) |
677 | chosen = *arch; | |
678 | } | |
679 | if (chosen == NULL) | |
8e65ff28 AC |
680 | internal_error (__FILE__, __LINE__, |
681 | "initialize_current_architecture: No arch"); | |
b4a20239 AC |
682 | info.bfd_arch_info = bfd_scan_arch (chosen); |
683 | if (info.bfd_arch_info == NULL) | |
8e65ff28 AC |
684 | internal_error (__FILE__, __LINE__, |
685 | "initialize_current_architecture: Arch not found"); | |
1ba607ad AC |
686 | } |
687 | ||
688 | /* take several guesses at a byte order. */ | |
689 | /* NB: can't use TARGET_BYTE_ORDER_DEFAULT as its definition is | |
690 | forced above. */ | |
691 | if (info.byte_order == 0 | |
692 | && default_bfd_vec != NULL) | |
693 | { | |
694 | /* Extract BFD's default vector's byte order. */ | |
695 | switch (default_bfd_vec->byteorder) | |
696 | { | |
697 | case BFD_ENDIAN_BIG: | |
698 | info.byte_order = BIG_ENDIAN; | |
699 | break; | |
700 | case BFD_ENDIAN_LITTLE: | |
701 | info.byte_order = LITTLE_ENDIAN; | |
702 | break; | |
703 | default: | |
704 | break; | |
705 | } | |
706 | } | |
707 | if (info.byte_order == 0) | |
708 | { | |
709 | /* look for ``*el-*'' in the target name. */ | |
710 | const char *chp; | |
711 | chp = strchr (target_name, '-'); | |
712 | if (chp != NULL | |
713 | && chp - 2 >= target_name | |
714 | && strncmp (chp - 2, "el", 2) == 0) | |
715 | info.byte_order = LITTLE_ENDIAN; | |
716 | } | |
717 | if (info.byte_order == 0) | |
718 | { | |
719 | /* Wire it to big-endian!!! */ | |
720 | info.byte_order = BIG_ENDIAN; | |
721 | } | |
722 | ||
723 | if (GDB_MULTI_ARCH) | |
724 | { | |
16f33e29 AC |
725 | if (! gdbarch_update_p (info)) |
726 | { | |
8e65ff28 AC |
727 | internal_error (__FILE__, __LINE__, |
728 | "initialize_current_architecture: Selection of initial architecture failed"); | |
16f33e29 | 729 | } |
b4a20239 | 730 | } |
ceaa8edf JB |
731 | else |
732 | initialize_non_multiarch (); | |
b4a20239 | 733 | |
1ba607ad AC |
734 | /* Create the ``set architecture'' command appending ``auto'' to the |
735 | list of architectures. */ | |
b4a20239 AC |
736 | { |
737 | struct cmd_list_element *c; | |
738 | /* Append ``auto''. */ | |
739 | int nr; | |
740 | for (nr = 0; arches[nr] != NULL; nr++); | |
741 | arches = xrealloc (arches, sizeof (char*) * (nr + 2)); | |
742 | arches[nr + 0] = "auto"; | |
743 | arches[nr + 1] = NULL; | |
744 | /* FIXME: add_set_enum_cmd() uses an array of ``char *'' instead | |
745 | of ``const char *''. We just happen to know that the casts are | |
746 | safe. */ | |
747 | c = add_set_enum_cmd ("architecture", class_support, | |
53904c9e | 748 | arches, &set_architecture_string, |
b4a20239 AC |
749 | "Set architecture of target.", |
750 | &setlist); | |
751 | c->function.sfunc = set_architecture; | |
752 | add_alias_cmd ("processor", "architecture", class_support, 1, &setlist); | |
753 | /* Don't use set_from_show - need to print both auto/manual and | |
754 | current setting. */ | |
755 | add_cmd ("architecture", class_support, show_architecture, | |
756 | "Show the current target architecture", &showlist); | |
b4a20239 AC |
757 | } |
758 | } | |
759 | ||
760 | ||
c0e8c252 AC |
761 | /* */ |
762 | ||
b4a20239 | 763 | extern initialize_file_ftype _initialize_gdbarch_utils; |
c0e8c252 AC |
764 | |
765 | void | |
b4a20239 | 766 | _initialize_gdbarch_utils (void) |
c0e8c252 | 767 | { |
b4a20239 AC |
768 | struct cmd_list_element *c; |
769 | c = add_set_enum_cmd ("endian", class_support, | |
770 | endian_enum, &set_endian_string, | |
771 | "Set endianness of target.", | |
772 | &setlist); | |
773 | c->function.sfunc = set_endian; | |
774 | /* Don't use set_from_show - need to print both auto/manual and | |
775 | current setting. */ | |
776 | add_cmd ("endian", class_support, show_endian, | |
777 | "Show the current byte-order", &showlist); | |
c0e8c252 | 778 | } |