Commit | Line | Data |
---|---|---|
c0e8c252 | 1 | /* Dynamic architecture support for GDB, the GNU debugger. |
f4f9705a AC |
2 | |
3 | Copyright 1998, 1999, 2000, 2001, 2002 Free Software Foundation, | |
4 | Inc. | |
c0e8c252 AC |
5 | |
6 | This file is part of GDB. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 59 Temple Place - Suite 330, | |
21 | Boston, MA 02111-1307, USA. */ | |
22 | ||
23 | #include "defs.h" | |
24 | ||
25 | #if GDB_MULTI_ARCH | |
fb6ecb0f | 26 | #include "arch-utils.h" |
c0e8c252 AC |
27 | #include "gdbcmd.h" |
28 | #include "inferior.h" /* enum CALL_DUMMY_LOCATION et.al. */ | |
29 | #else | |
30 | /* Just include everything in sight so that the every old definition | |
31 | of macro is visible. */ | |
32 | #include "gdb_string.h" | |
c0e8c252 AC |
33 | #include "symtab.h" |
34 | #include "frame.h" | |
35 | #include "inferior.h" | |
36 | #include "breakpoint.h" | |
37 | #include "gdb_wait.h" | |
38 | #include "gdbcore.h" | |
39 | #include "gdbcmd.h" | |
40 | #include "target.h" | |
c0e8c252 | 41 | #include "annotate.h" |
c0e8c252 | 42 | #endif |
fbec36e2 | 43 | #include "regcache.h" |
39d4ef09 | 44 | #include "gdb_assert.h" |
c0e8c252 | 45 | |
1ba607ad AC |
46 | #include "version.h" |
47 | ||
f0d4cc9e AC |
48 | #include "floatformat.h" |
49 | ||
c0e8c252 AC |
50 | /* Use the program counter to determine the contents and size |
51 | of a breakpoint instruction. If no target-dependent macro | |
52 | BREAKPOINT_FROM_PC has been defined to implement this function, | |
53 | assume that the breakpoint doesn't depend on the PC, and | |
54 | use the values of the BIG_BREAKPOINT and LITTLE_BREAKPOINT macros. | |
55 | Return a pointer to a string of bytes that encode a breakpoint | |
56 | instruction, stores the length of the string to *lenptr, | |
57 | and optionally adjust the pc to point to the correct memory location | |
58 | for inserting the breakpoint. */ | |
59 | ||
f4f9705a | 60 | const unsigned char * |
c0e8c252 AC |
61 | legacy_breakpoint_from_pc (CORE_ADDR * pcptr, int *lenptr) |
62 | { | |
63 | /* {BIG_,LITTLE_}BREAKPOINT is the sequence of bytes we insert for a | |
64 | breakpoint. On some machines, breakpoints are handled by the | |
65 | target environment and we don't have to worry about them here. */ | |
66 | #ifdef BIG_BREAKPOINT | |
d7449b42 | 67 | if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) |
c0e8c252 AC |
68 | { |
69 | static unsigned char big_break_insn[] = BIG_BREAKPOINT; | |
70 | *lenptr = sizeof (big_break_insn); | |
71 | return big_break_insn; | |
72 | } | |
73 | #endif | |
74 | #ifdef LITTLE_BREAKPOINT | |
d7449b42 | 75 | if (TARGET_BYTE_ORDER != BFD_ENDIAN_BIG) |
c0e8c252 AC |
76 | { |
77 | static unsigned char little_break_insn[] = LITTLE_BREAKPOINT; | |
78 | *lenptr = sizeof (little_break_insn); | |
79 | return little_break_insn; | |
80 | } | |
81 | #endif | |
82 | #ifdef BREAKPOINT | |
83 | { | |
84 | static unsigned char break_insn[] = BREAKPOINT; | |
85 | *lenptr = sizeof (break_insn); | |
86 | return break_insn; | |
87 | } | |
88 | #endif | |
89 | *lenptr = 0; | |
90 | return NULL; | |
91 | } | |
92 | ||
93 | int | |
94 | generic_frameless_function_invocation_not (struct frame_info *fi) | |
95 | { | |
96 | return 0; | |
97 | } | |
98 | ||
71a9f22e JB |
99 | int |
100 | generic_return_value_on_stack_not (struct type *type) | |
101 | { | |
102 | return 0; | |
103 | } | |
104 | ||
bdcd319a CV |
105 | CORE_ADDR |
106 | generic_skip_trampoline_code (CORE_ADDR pc) | |
107 | { | |
108 | return 0; | |
109 | } | |
110 | ||
68e9cc94 CV |
111 | int |
112 | generic_in_solib_call_trampoline (CORE_ADDR pc, char *name) | |
113 | { | |
114 | return 0; | |
115 | } | |
116 | ||
c12260ac CV |
117 | int |
118 | generic_in_function_epilogue_p (struct gdbarch *gdbarch, CORE_ADDR pc) | |
119 | { | |
120 | return 0; | |
121 | } | |
122 | ||
c0e8c252 AC |
123 | char * |
124 | legacy_register_name (int i) | |
125 | { | |
126 | #ifdef REGISTER_NAMES | |
127 | static char *names[] = REGISTER_NAMES; | |
128 | if (i < 0 || i >= (sizeof (names) / sizeof (*names))) | |
129 | return NULL; | |
130 | else | |
131 | return names[i]; | |
132 | #else | |
8e65ff28 AC |
133 | internal_error (__FILE__, __LINE__, |
134 | "legacy_register_name: called."); | |
c0e8c252 AC |
135 | return NULL; |
136 | #endif | |
137 | } | |
138 | ||
139 | #if defined (CALL_DUMMY) | |
140 | LONGEST legacy_call_dummy_words[] = CALL_DUMMY; | |
141 | #else | |
142 | LONGEST legacy_call_dummy_words[1]; | |
143 | #endif | |
144 | int legacy_sizeof_call_dummy_words = sizeof (legacy_call_dummy_words); | |
145 | ||
146 | void | |
147 | generic_remote_translate_xfer_address (CORE_ADDR gdb_addr, int gdb_len, | |
148 | CORE_ADDR * rem_addr, int *rem_len) | |
149 | { | |
150 | *rem_addr = gdb_addr; | |
151 | *rem_len = gdb_len; | |
152 | } | |
153 | ||
dad41f9a AC |
154 | int |
155 | generic_prologue_frameless_p (CORE_ADDR ip) | |
156 | { | |
157 | #ifdef SKIP_PROLOGUE_FRAMELESS_P | |
158 | return ip == SKIP_PROLOGUE_FRAMELESS_P (ip); | |
159 | #else | |
160 | return ip == SKIP_PROLOGUE (ip); | |
161 | #endif | |
162 | } | |
163 | ||
2bf0cb65 EZ |
164 | /* New/multi-arched targets should use the correct gdbarch field |
165 | instead of using this global pointer. */ | |
166 | int | |
167 | legacy_print_insn (bfd_vma vma, disassemble_info *info) | |
168 | { | |
169 | return (*tm_print_insn) (vma, info); | |
170 | } | |
dad41f9a | 171 | |
3339cf8b AC |
172 | /* Helper functions for INNER_THAN */ |
173 | ||
174 | int | |
fba45db2 | 175 | core_addr_lessthan (CORE_ADDR lhs, CORE_ADDR rhs) |
3339cf8b AC |
176 | { |
177 | return (lhs < rhs); | |
178 | } | |
179 | ||
180 | int | |
fba45db2 | 181 | core_addr_greaterthan (CORE_ADDR lhs, CORE_ADDR rhs) |
3339cf8b AC |
182 | { |
183 | return (lhs > rhs); | |
184 | } | |
185 | ||
186 | ||
f0d4cc9e AC |
187 | /* Helper functions for TARGET_{FLOAT,DOUBLE}_FORMAT */ |
188 | ||
189 | const struct floatformat * | |
190 | default_float_format (struct gdbarch *gdbarch) | |
191 | { | |
192 | #if GDB_MULTI_ARCH | |
193 | int byte_order = gdbarch_byte_order (gdbarch); | |
194 | #else | |
195 | int byte_order = TARGET_BYTE_ORDER; | |
196 | #endif | |
197 | switch (byte_order) | |
198 | { | |
d7449b42 | 199 | case BFD_ENDIAN_BIG: |
f0d4cc9e | 200 | return &floatformat_ieee_single_big; |
778eb05e | 201 | case BFD_ENDIAN_LITTLE: |
f0d4cc9e AC |
202 | return &floatformat_ieee_single_little; |
203 | default: | |
8e65ff28 AC |
204 | internal_error (__FILE__, __LINE__, |
205 | "default_float_format: bad byte order"); | |
f0d4cc9e AC |
206 | } |
207 | } | |
208 | ||
209 | ||
210 | const struct floatformat * | |
211 | default_double_format (struct gdbarch *gdbarch) | |
212 | { | |
213 | #if GDB_MULTI_ARCH | |
214 | int byte_order = gdbarch_byte_order (gdbarch); | |
215 | #else | |
216 | int byte_order = TARGET_BYTE_ORDER; | |
217 | #endif | |
218 | switch (byte_order) | |
219 | { | |
d7449b42 | 220 | case BFD_ENDIAN_BIG: |
f0d4cc9e | 221 | return &floatformat_ieee_double_big; |
778eb05e | 222 | case BFD_ENDIAN_LITTLE: |
f0d4cc9e AC |
223 | return &floatformat_ieee_double_little; |
224 | default: | |
8e65ff28 AC |
225 | internal_error (__FILE__, __LINE__, |
226 | "default_double_format: bad byte order"); | |
f0d4cc9e AC |
227 | } |
228 | } | |
229 | ||
5e74b15c RE |
230 | void |
231 | default_print_float_info (void) | |
232 | { | |
233 | #ifdef FLOAT_INFO | |
234 | #if GDB_MULTI_ARCH > GDB_MULTI_ARCH_PARTIAL | |
235 | #error "FLOAT_INFO defined in multi-arch" | |
236 | #endif | |
237 | FLOAT_INFO; | |
238 | #else | |
239 | printf_filtered ("No floating point info available for this processor.\n"); | |
240 | #endif | |
241 | } | |
242 | ||
193e3b1a AC |
243 | /* Misc helper functions for targets. */ |
244 | ||
245 | int | |
fba45db2 | 246 | frame_num_args_unknown (struct frame_info *fi) |
193e3b1a AC |
247 | { |
248 | return -1; | |
249 | } | |
250 | ||
251 | ||
252 | int | |
fba45db2 | 253 | generic_register_convertible_not (int num) |
193e3b1a AC |
254 | { |
255 | return 0; | |
256 | } | |
257 | ||
b4a20239 | 258 | |
c8f9d51c JB |
259 | /* Under some ABI's that specify the `struct convention' for returning |
260 | structures by value, by the time we've returned from the function, | |
261 | the return value is sitting there in the caller's buffer, but GDB | |
262 | has no way to find the address of that buffer. | |
263 | ||
264 | On such architectures, use this function as your | |
265 | extract_struct_value_address method. When asked to a struct | |
266 | returned by value in this fashion, GDB will print a nice error | |
267 | message, instead of garbage. */ | |
268 | CORE_ADDR | |
269 | generic_cannot_extract_struct_value_address (char *dummy) | |
270 | { | |
271 | return 0; | |
272 | } | |
273 | ||
7c7651b2 AC |
274 | int |
275 | default_register_sim_regno (int num) | |
276 | { | |
277 | return num; | |
278 | } | |
279 | ||
f517ea4e PS |
280 | |
281 | CORE_ADDR | |
875e1767 | 282 | core_addr_identity (CORE_ADDR addr) |
f517ea4e PS |
283 | { |
284 | return addr; | |
285 | } | |
286 | ||
88c72b7d AC |
287 | int |
288 | no_op_reg_to_regnum (int reg) | |
289 | { | |
290 | return reg; | |
291 | } | |
292 | ||
c347ee3e MS |
293 | /* For use by frame_args_address and frame_locals_address. */ |
294 | CORE_ADDR | |
295 | default_frame_address (struct frame_info *fi) | |
296 | { | |
297 | return fi->frame; | |
298 | } | |
299 | ||
e02bc4cc DS |
300 | /* Default prepare_to_procced(). */ |
301 | int | |
302 | default_prepare_to_proceed (int select_it) | |
303 | { | |
304 | return 0; | |
305 | } | |
306 | ||
307 | /* Generic prepare_to_proceed(). This one should be suitable for most | |
308 | targets that support threads. */ | |
309 | int | |
310 | generic_prepare_to_proceed (int select_it) | |
311 | { | |
39f77062 | 312 | ptid_t wait_ptid; |
e02bc4cc DS |
313 | struct target_waitstatus wait_status; |
314 | ||
315 | /* Get the last target status returned by target_wait(). */ | |
39f77062 | 316 | get_last_target_status (&wait_ptid, &wait_status); |
e02bc4cc | 317 | |
8849f47d JL |
318 | /* Make sure we were stopped either at a breakpoint, or because |
319 | of a Ctrl-C. */ | |
e02bc4cc | 320 | if (wait_status.kind != TARGET_WAITKIND_STOPPED |
8849f47d JL |
321 | || (wait_status.value.sig != TARGET_SIGNAL_TRAP && |
322 | wait_status.value.sig != TARGET_SIGNAL_INT)) | |
e02bc4cc DS |
323 | { |
324 | return 0; | |
325 | } | |
326 | ||
39f77062 KB |
327 | if (!ptid_equal (wait_ptid, minus_one_ptid) |
328 | && !ptid_equal (inferior_ptid, wait_ptid)) | |
e02bc4cc DS |
329 | { |
330 | /* Switched over from WAIT_PID. */ | |
39f77062 | 331 | CORE_ADDR wait_pc = read_pc_pid (wait_ptid); |
e02bc4cc | 332 | |
8849f47d | 333 | if (wait_pc != read_pc ()) |
e02bc4cc DS |
334 | { |
335 | if (select_it) | |
336 | { | |
8849f47d | 337 | /* Switch back to WAIT_PID thread. */ |
39f77062 | 338 | inferior_ptid = wait_ptid; |
e02bc4cc DS |
339 | |
340 | /* FIXME: This stuff came from switch_to_thread() in | |
341 | thread.c (which should probably be a public function). */ | |
342 | flush_cached_frames (); | |
343 | registers_changed (); | |
344 | stop_pc = wait_pc; | |
345 | select_frame (get_current_frame (), 0); | |
346 | } | |
8849f47d JL |
347 | /* We return 1 to indicate that there is a breakpoint here, |
348 | so we need to step over it before continuing to avoid | |
349 | hitting it straight away. */ | |
350 | if (breakpoint_here_p (wait_pc)) | |
351 | { | |
352 | return 1; | |
353 | } | |
e02bc4cc DS |
354 | } |
355 | } | |
356 | return 0; | |
357 | ||
358 | } | |
359 | ||
10312cc4 AC |
360 | void |
361 | init_frame_pc_noop (int fromleaf, struct frame_info *prev) | |
362 | { | |
363 | return; | |
364 | } | |
365 | ||
7824d2f2 AC |
366 | void |
367 | init_frame_pc_default (int fromleaf, struct frame_info *prev) | |
368 | { | |
369 | if (fromleaf) | |
370 | prev->pc = SAVED_PC_AFTER_CALL (prev->next); | |
371 | else if (prev->next != NULL) | |
372 | prev->pc = FRAME_SAVED_PC (prev->next); | |
373 | else | |
374 | prev->pc = read_pc (); | |
375 | } | |
376 | ||
a2cf933a EZ |
377 | void |
378 | default_elf_make_msymbol_special (asymbol *sym, struct minimal_symbol *msym) | |
379 | { | |
380 | return; | |
381 | } | |
382 | ||
383 | void | |
384 | default_coff_make_msymbol_special (int val, struct minimal_symbol *msym) | |
385 | { | |
386 | return; | |
387 | } | |
388 | ||
01fb7433 AC |
389 | int |
390 | cannot_register_not (int regnum) | |
391 | { | |
392 | return 0; | |
393 | } | |
39d4ef09 AC |
394 | |
395 | /* Legacy version of target_virtual_frame_pointer(). Assumes that | |
396 | there is an FP_REGNUM and that it is the same, cooked or raw. */ | |
397 | ||
398 | void | |
399 | legacy_virtual_frame_pointer (CORE_ADDR pc, | |
400 | int *frame_regnum, | |
401 | LONGEST *frame_offset) | |
402 | { | |
403 | gdb_assert (FP_REGNUM >= 0); | |
404 | *frame_regnum = FP_REGNUM; | |
405 | *frame_offset = 0; | |
406 | } | |
46cd78fb AC |
407 | |
408 | /* Assume the world is flat. Every register is large enough to fit a | |
409 | target integer. */ | |
410 | ||
411 | int | |
412 | generic_register_raw_size (int regnum) | |
413 | { | |
414 | gdb_assert (regnum >= 0 && regnum < NUM_REGS + NUM_PSEUDO_REGS); | |
415 | return TARGET_INT_BIT / HOST_CHAR_BIT; | |
416 | } | |
417 | ||
ce29138a MS |
418 | /* Assume the virtual size corresponds to the virtual type. */ |
419 | ||
420 | int | |
421 | generic_register_virtual_size (int regnum) | |
422 | { | |
ef8570de | 423 | return TYPE_LENGTH (REGISTER_VIRTUAL_TYPE (regnum)); |
ce29138a MS |
424 | } |
425 | ||
01fb7433 | 426 | \f |
b4a20239 AC |
427 | /* Functions to manipulate the endianness of the target. */ |
428 | ||
1ba607ad | 429 | /* ``target_byte_order'' is only used when non- multi-arch. |
afe64c1a AC |
430 | Multi-arch targets obtain the current byte order using the |
431 | TARGET_BYTE_ORDER gdbarch method. | |
432 | ||
433 | The choice of initial value is entirely arbitrary. During startup, | |
434 | the function initialize_current_architecture() updates this value | |
435 | based on default byte-order information extracted from BFD. */ | |
436 | int target_byte_order = BFD_ENDIAN_BIG; | |
b4a20239 AC |
437 | int target_byte_order_auto = 1; |
438 | ||
53904c9e AC |
439 | static const char endian_big[] = "big"; |
440 | static const char endian_little[] = "little"; | |
441 | static const char endian_auto[] = "auto"; | |
442 | static const char *endian_enum[] = | |
b4a20239 AC |
443 | { |
444 | endian_big, | |
445 | endian_little, | |
446 | endian_auto, | |
447 | NULL, | |
448 | }; | |
53904c9e | 449 | static const char *set_endian_string; |
b4a20239 AC |
450 | |
451 | /* Called by ``show endian''. */ | |
452 | ||
453 | static void | |
454 | show_endian (char *args, int from_tty) | |
455 | { | |
456 | if (TARGET_BYTE_ORDER_AUTO) | |
457 | printf_unfiltered ("The target endianness is set automatically (currently %s endian)\n", | |
d7449b42 | 458 | (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG ? "big" : "little")); |
b4a20239 AC |
459 | else |
460 | printf_unfiltered ("The target is assumed to be %s endian\n", | |
d7449b42 | 461 | (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG ? "big" : "little")); |
b4a20239 AC |
462 | } |
463 | ||
464 | static void | |
465 | set_endian (char *ignore_args, int from_tty, struct cmd_list_element *c) | |
466 | { | |
3fd3d7d2 | 467 | if (set_endian_string == endian_auto) |
b4a20239 AC |
468 | { |
469 | target_byte_order_auto = 1; | |
470 | } | |
471 | else if (set_endian_string == endian_little) | |
472 | { | |
b4a20239 AC |
473 | target_byte_order_auto = 0; |
474 | if (GDB_MULTI_ARCH) | |
475 | { | |
476 | struct gdbarch_info info; | |
fb6ecb0f | 477 | gdbarch_info_init (&info); |
778eb05e | 478 | info.byte_order = BFD_ENDIAN_LITTLE; |
16f33e29 AC |
479 | if (! gdbarch_update_p (info)) |
480 | { | |
481 | printf_unfiltered ("Little endian target not supported by GDB\n"); | |
482 | } | |
b4a20239 | 483 | } |
1ba607ad AC |
484 | else |
485 | { | |
778eb05e | 486 | target_byte_order = BFD_ENDIAN_LITTLE; |
1ba607ad | 487 | } |
b4a20239 AC |
488 | } |
489 | else if (set_endian_string == endian_big) | |
490 | { | |
b4a20239 AC |
491 | target_byte_order_auto = 0; |
492 | if (GDB_MULTI_ARCH) | |
493 | { | |
494 | struct gdbarch_info info; | |
fb6ecb0f | 495 | gdbarch_info_init (&info); |
d7449b42 | 496 | info.byte_order = BFD_ENDIAN_BIG; |
16f33e29 AC |
497 | if (! gdbarch_update_p (info)) |
498 | { | |
499 | printf_unfiltered ("Big endian target not supported by GDB\n"); | |
500 | } | |
b4a20239 | 501 | } |
1ba607ad AC |
502 | else |
503 | { | |
d7449b42 | 504 | target_byte_order = BFD_ENDIAN_BIG; |
1ba607ad | 505 | } |
b4a20239 AC |
506 | } |
507 | else | |
8e65ff28 AC |
508 | internal_error (__FILE__, __LINE__, |
509 | "set_endian: bad value"); | |
b4a20239 AC |
510 | show_endian (NULL, from_tty); |
511 | } | |
512 | ||
513 | /* Set the endianness from a BFD. */ | |
514 | ||
515 | static void | |
516 | set_endian_from_file (bfd *abfd) | |
517 | { | |
3fd3d7d2 | 518 | int want; |
1ba607ad | 519 | if (GDB_MULTI_ARCH) |
8e65ff28 AC |
520 | internal_error (__FILE__, __LINE__, |
521 | "set_endian_from_file: not for multi-arch"); | |
3fd3d7d2 AC |
522 | if (bfd_big_endian (abfd)) |
523 | want = BFD_ENDIAN_BIG; | |
b4a20239 | 524 | else |
3fd3d7d2 AC |
525 | want = BFD_ENDIAN_LITTLE; |
526 | if (TARGET_BYTE_ORDER_AUTO) | |
527 | target_byte_order = want; | |
528 | else if (TARGET_BYTE_ORDER != want) | |
529 | warning ("%s endian file does not match %s endian target.", | |
530 | want == BFD_ENDIAN_BIG ? "big" : "little", | |
531 | TARGET_BYTE_ORDER == BFD_ENDIAN_BIG ? "big" : "little"); | |
b4a20239 AC |
532 | } |
533 | ||
534 | ||
535 | /* Functions to manipulate the architecture of the target */ | |
536 | ||
537 | enum set_arch { set_arch_auto, set_arch_manual }; | |
538 | ||
539 | int target_architecture_auto = 1; | |
540 | ||
53904c9e | 541 | const char *set_architecture_string; |
b4a20239 AC |
542 | |
543 | /* Old way of changing the current architecture. */ | |
544 | ||
545 | extern const struct bfd_arch_info bfd_default_arch_struct; | |
546 | const struct bfd_arch_info *target_architecture = &bfd_default_arch_struct; | |
547 | int (*target_architecture_hook) (const struct bfd_arch_info *ap); | |
548 | ||
549 | static int | |
550 | arch_ok (const struct bfd_arch_info *arch) | |
551 | { | |
552 | if (GDB_MULTI_ARCH) | |
8e65ff28 AC |
553 | internal_error (__FILE__, __LINE__, |
554 | "arch_ok: not multi-arched"); | |
b4a20239 AC |
555 | /* Should be performing the more basic check that the binary is |
556 | compatible with GDB. */ | |
557 | /* Check with the target that the architecture is valid. */ | |
558 | return (target_architecture_hook == NULL | |
559 | || target_architecture_hook (arch)); | |
560 | } | |
561 | ||
562 | static void | |
563 | set_arch (const struct bfd_arch_info *arch, | |
564 | enum set_arch type) | |
565 | { | |
566 | if (GDB_MULTI_ARCH) | |
8e65ff28 AC |
567 | internal_error (__FILE__, __LINE__, |
568 | "set_arch: not multi-arched"); | |
b4a20239 AC |
569 | switch (type) |
570 | { | |
571 | case set_arch_auto: | |
572 | if (!arch_ok (arch)) | |
573 | warning ("Target may not support %s architecture", | |
574 | arch->printable_name); | |
575 | target_architecture = arch; | |
576 | break; | |
577 | case set_arch_manual: | |
578 | if (!arch_ok (arch)) | |
579 | { | |
580 | printf_unfiltered ("Target does not support `%s' architecture.\n", | |
581 | arch->printable_name); | |
582 | } | |
583 | else | |
584 | { | |
585 | target_architecture_auto = 0; | |
586 | target_architecture = arch; | |
587 | } | |
588 | break; | |
589 | } | |
590 | if (gdbarch_debug) | |
4b9b3959 | 591 | gdbarch_dump (current_gdbarch, gdb_stdlog); |
b4a20239 AC |
592 | } |
593 | ||
594 | /* Set the architecture from arch/machine (deprecated) */ | |
595 | ||
596 | void | |
597 | set_architecture_from_arch_mach (enum bfd_architecture arch, | |
598 | unsigned long mach) | |
599 | { | |
600 | const struct bfd_arch_info *wanted = bfd_lookup_arch (arch, mach); | |
601 | if (GDB_MULTI_ARCH) | |
8e65ff28 AC |
602 | internal_error (__FILE__, __LINE__, |
603 | "set_architecture_from_arch_mach: not multi-arched"); | |
b4a20239 AC |
604 | if (wanted != NULL) |
605 | set_arch (wanted, set_arch_manual); | |
606 | else | |
8e65ff28 AC |
607 | internal_error (__FILE__, __LINE__, |
608 | "gdbarch: hardwired architecture/machine not recognized"); | |
b4a20239 AC |
609 | } |
610 | ||
611 | /* Set the architecture from a BFD (deprecated) */ | |
612 | ||
613 | static void | |
614 | set_architecture_from_file (bfd *abfd) | |
615 | { | |
616 | const struct bfd_arch_info *wanted = bfd_get_arch_info (abfd); | |
617 | if (GDB_MULTI_ARCH) | |
8e65ff28 AC |
618 | internal_error (__FILE__, __LINE__, |
619 | "set_architecture_from_file: not multi-arched"); | |
b4a20239 AC |
620 | if (target_architecture_auto) |
621 | { | |
622 | set_arch (wanted, set_arch_auto); | |
623 | } | |
624 | else if (wanted != target_architecture) | |
625 | { | |
626 | warning ("%s architecture file may be incompatible with %s target.", | |
627 | wanted->printable_name, | |
628 | target_architecture->printable_name); | |
629 | } | |
630 | } | |
631 | ||
632 | ||
633 | /* Called if the user enters ``show architecture'' without an | |
634 | argument. */ | |
635 | ||
636 | static void | |
637 | show_architecture (char *args, int from_tty) | |
638 | { | |
639 | const char *arch; | |
640 | arch = TARGET_ARCHITECTURE->printable_name; | |
641 | if (target_architecture_auto) | |
642 | printf_filtered ("The target architecture is set automatically (currently %s)\n", arch); | |
643 | else | |
644 | printf_filtered ("The target architecture is assumed to be %s\n", arch); | |
645 | } | |
646 | ||
647 | ||
648 | /* Called if the user enters ``set architecture'' with or without an | |
649 | argument. */ | |
650 | ||
651 | static void | |
652 | set_architecture (char *ignore_args, int from_tty, struct cmd_list_element *c) | |
653 | { | |
654 | if (strcmp (set_architecture_string, "auto") == 0) | |
655 | { | |
656 | target_architecture_auto = 1; | |
657 | } | |
658 | else if (GDB_MULTI_ARCH) | |
659 | { | |
660 | struct gdbarch_info info; | |
fb6ecb0f | 661 | gdbarch_info_init (&info); |
b4a20239 AC |
662 | info.bfd_arch_info = bfd_scan_arch (set_architecture_string); |
663 | if (info.bfd_arch_info == NULL) | |
8e65ff28 AC |
664 | internal_error (__FILE__, __LINE__, |
665 | "set_architecture: bfd_scan_arch failed"); | |
16f33e29 | 666 | if (gdbarch_update_p (info)) |
b4a20239 AC |
667 | target_architecture_auto = 0; |
668 | else | |
ec3d358c | 669 | printf_unfiltered ("Architecture `%s' not recognized.\n", |
b4a20239 AC |
670 | set_architecture_string); |
671 | } | |
672 | else | |
673 | { | |
674 | const struct bfd_arch_info *arch | |
675 | = bfd_scan_arch (set_architecture_string); | |
676 | if (arch == NULL) | |
8e65ff28 AC |
677 | internal_error (__FILE__, __LINE__, |
678 | "set_architecture: bfd_scan_arch failed"); | |
b4a20239 AC |
679 | set_arch (arch, set_arch_manual); |
680 | } | |
681 | show_architecture (NULL, from_tty); | |
682 | } | |
683 | ||
b7d6b182 | 684 | /* Set the dynamic target-system-dependent parameters (architecture, |
b4a20239 AC |
685 | byte-order) using information found in the BFD */ |
686 | ||
687 | void | |
fba45db2 | 688 | set_gdbarch_from_file (bfd *abfd) |
b4a20239 AC |
689 | { |
690 | if (GDB_MULTI_ARCH) | |
691 | { | |
692 | struct gdbarch_info info; | |
fb6ecb0f | 693 | gdbarch_info_init (&info); |
b4a20239 | 694 | info.abfd = abfd; |
16f33e29 | 695 | if (! gdbarch_update_p (info)) |
ec3d358c | 696 | error ("Architecture of file not recognized.\n"); |
b4a20239 AC |
697 | } |
698 | else | |
699 | { | |
700 | set_architecture_from_file (abfd); | |
701 | set_endian_from_file (abfd); | |
702 | } | |
703 | } | |
704 | ||
705 | /* Initialize the current architecture. Update the ``set | |
706 | architecture'' command so that it specifies a list of valid | |
707 | architectures. */ | |
708 | ||
1ba607ad AC |
709 | #ifdef DEFAULT_BFD_ARCH |
710 | extern const bfd_arch_info_type DEFAULT_BFD_ARCH; | |
711 | static const bfd_arch_info_type *default_bfd_arch = &DEFAULT_BFD_ARCH; | |
712 | #else | |
4b9b3959 | 713 | static const bfd_arch_info_type *default_bfd_arch; |
1ba607ad AC |
714 | #endif |
715 | ||
716 | #ifdef DEFAULT_BFD_VEC | |
717 | extern const bfd_target DEFAULT_BFD_VEC; | |
718 | static const bfd_target *default_bfd_vec = &DEFAULT_BFD_VEC; | |
719 | #else | |
720 | static const bfd_target *default_bfd_vec; | |
721 | #endif | |
722 | ||
b4a20239 AC |
723 | void |
724 | initialize_current_architecture (void) | |
725 | { | |
726 | const char **arches = gdbarch_printable_names (); | |
b4a20239 | 727 | |
1ba607ad AC |
728 | /* determine a default architecture and byte order. */ |
729 | struct gdbarch_info info; | |
fb6ecb0f | 730 | gdbarch_info_init (&info); |
1ba607ad AC |
731 | |
732 | /* Find a default architecture. */ | |
733 | if (info.bfd_arch_info == NULL | |
734 | && default_bfd_arch != NULL) | |
735 | info.bfd_arch_info = default_bfd_arch; | |
736 | if (info.bfd_arch_info == NULL) | |
b4a20239 | 737 | { |
1ba607ad AC |
738 | /* Choose the architecture by taking the first one |
739 | alphabetically. */ | |
740 | const char *chosen = arches[0]; | |
b4a20239 | 741 | const char **arch; |
b4a20239 AC |
742 | for (arch = arches; *arch != NULL; arch++) |
743 | { | |
b4a20239 AC |
744 | if (strcmp (*arch, chosen) < 0) |
745 | chosen = *arch; | |
746 | } | |
747 | if (chosen == NULL) | |
8e65ff28 AC |
748 | internal_error (__FILE__, __LINE__, |
749 | "initialize_current_architecture: No arch"); | |
b4a20239 AC |
750 | info.bfd_arch_info = bfd_scan_arch (chosen); |
751 | if (info.bfd_arch_info == NULL) | |
8e65ff28 AC |
752 | internal_error (__FILE__, __LINE__, |
753 | "initialize_current_architecture: Arch not found"); | |
1ba607ad AC |
754 | } |
755 | ||
afe64c1a | 756 | /* Take several guesses at a byte order. */ |
428721aa | 757 | if (info.byte_order == BFD_ENDIAN_UNKNOWN |
1ba607ad AC |
758 | && default_bfd_vec != NULL) |
759 | { | |
760 | /* Extract BFD's default vector's byte order. */ | |
761 | switch (default_bfd_vec->byteorder) | |
762 | { | |
763 | case BFD_ENDIAN_BIG: | |
d7449b42 | 764 | info.byte_order = BFD_ENDIAN_BIG; |
1ba607ad AC |
765 | break; |
766 | case BFD_ENDIAN_LITTLE: | |
778eb05e | 767 | info.byte_order = BFD_ENDIAN_LITTLE; |
1ba607ad AC |
768 | break; |
769 | default: | |
770 | break; | |
771 | } | |
772 | } | |
428721aa | 773 | if (info.byte_order == BFD_ENDIAN_UNKNOWN) |
1ba607ad AC |
774 | { |
775 | /* look for ``*el-*'' in the target name. */ | |
776 | const char *chp; | |
777 | chp = strchr (target_name, '-'); | |
778 | if (chp != NULL | |
779 | && chp - 2 >= target_name | |
780 | && strncmp (chp - 2, "el", 2) == 0) | |
778eb05e | 781 | info.byte_order = BFD_ENDIAN_LITTLE; |
1ba607ad | 782 | } |
428721aa | 783 | if (info.byte_order == BFD_ENDIAN_UNKNOWN) |
1ba607ad AC |
784 | { |
785 | /* Wire it to big-endian!!! */ | |
d7449b42 | 786 | info.byte_order = BFD_ENDIAN_BIG; |
1ba607ad AC |
787 | } |
788 | ||
789 | if (GDB_MULTI_ARCH) | |
790 | { | |
16f33e29 AC |
791 | if (! gdbarch_update_p (info)) |
792 | { | |
8e65ff28 AC |
793 | internal_error (__FILE__, __LINE__, |
794 | "initialize_current_architecture: Selection of initial architecture failed"); | |
16f33e29 | 795 | } |
b4a20239 | 796 | } |
ceaa8edf | 797 | else |
afe64c1a AC |
798 | { |
799 | /* If the multi-arch logic comes up with a byte-order (from BFD) | |
800 | use it for the non-multi-arch case. */ | |
801 | if (info.byte_order != BFD_ENDIAN_UNKNOWN) | |
802 | target_byte_order = info.byte_order; | |
803 | initialize_non_multiarch (); | |
804 | } | |
b4a20239 | 805 | |
1ba607ad AC |
806 | /* Create the ``set architecture'' command appending ``auto'' to the |
807 | list of architectures. */ | |
b4a20239 AC |
808 | { |
809 | struct cmd_list_element *c; | |
810 | /* Append ``auto''. */ | |
811 | int nr; | |
812 | for (nr = 0; arches[nr] != NULL; nr++); | |
813 | arches = xrealloc (arches, sizeof (char*) * (nr + 2)); | |
814 | arches[nr + 0] = "auto"; | |
815 | arches[nr + 1] = NULL; | |
816 | /* FIXME: add_set_enum_cmd() uses an array of ``char *'' instead | |
817 | of ``const char *''. We just happen to know that the casts are | |
818 | safe. */ | |
819 | c = add_set_enum_cmd ("architecture", class_support, | |
53904c9e | 820 | arches, &set_architecture_string, |
b4a20239 AC |
821 | "Set architecture of target.", |
822 | &setlist); | |
9f60d481 | 823 | set_cmd_sfunc (c, set_architecture); |
b4a20239 AC |
824 | add_alias_cmd ("processor", "architecture", class_support, 1, &setlist); |
825 | /* Don't use set_from_show - need to print both auto/manual and | |
826 | current setting. */ | |
827 | add_cmd ("architecture", class_support, show_architecture, | |
828 | "Show the current target architecture", &showlist); | |
b4a20239 AC |
829 | } |
830 | } | |
831 | ||
832 | ||
fb6ecb0f AC |
833 | /* Initialize a gdbarch info to values that will be automatically |
834 | overridden. Note: Originally, this ``struct info'' was initialized | |
835 | using memset(0). Unfortunatly, that ran into problems, namely | |
836 | BFD_ENDIAN_BIG is zero. An explicit initialization function that | |
837 | can explicitly set each field to a well defined value is used. */ | |
838 | ||
839 | void | |
840 | gdbarch_info_init (struct gdbarch_info *info) | |
841 | { | |
842 | memset (info, 0, sizeof (struct gdbarch_info)); | |
428721aa | 843 | info->byte_order = BFD_ENDIAN_UNKNOWN; |
fb6ecb0f AC |
844 | } |
845 | ||
c0e8c252 AC |
846 | /* */ |
847 | ||
b4a20239 | 848 | extern initialize_file_ftype _initialize_gdbarch_utils; |
c0e8c252 AC |
849 | |
850 | void | |
b4a20239 | 851 | _initialize_gdbarch_utils (void) |
c0e8c252 | 852 | { |
b4a20239 AC |
853 | struct cmd_list_element *c; |
854 | c = add_set_enum_cmd ("endian", class_support, | |
855 | endian_enum, &set_endian_string, | |
856 | "Set endianness of target.", | |
857 | &setlist); | |
9f60d481 | 858 | set_cmd_sfunc (c, set_endian); |
b4a20239 AC |
859 | /* Don't use set_from_show - need to print both auto/manual and |
860 | current setting. */ | |
861 | add_cmd ("endian", class_support, show_endian, | |
862 | "Show the current byte-order", &showlist); | |
c0e8c252 | 863 | } |