Commit | Line | Data |
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c0e8c252 | 1 | /* Dynamic architecture support for GDB, the GNU debugger. |
f4f9705a | 2 | |
3666a048 | 3 | Copyright (C) 1998-2021 Free Software Foundation, Inc. |
c0e8c252 AC |
4 | |
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c0e8c252 AC |
10 | (at your option) any later version. |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c0e8c252 AC |
19 | |
20 | #include "defs.h" | |
21 | ||
fb6ecb0f | 22 | #include "arch-utils.h" |
c0e8c252 | 23 | #include "gdbcmd.h" |
4de283e4 | 24 | #include "inferior.h" /* enum CALL_DUMMY_LOCATION et al. */ |
45741a9c | 25 | #include "infrun.h" |
fbec36e2 | 26 | #include "regcache.h" |
4182591f | 27 | #include "sim-regno.h" |
4de283e4 TT |
28 | #include "gdbcore.h" |
29 | #include "osabi.h" | |
d55e5aa6 | 30 | #include "target-descriptions.h" |
4de283e4 TT |
31 | #include "objfiles.h" |
32 | #include "language.h" | |
33 | #include "symtab.h" | |
34 | ||
268a13a5 | 35 | #include "gdbsupport/version.h" |
4de283e4 TT |
36 | |
37 | #include "floatformat.h" | |
38 | ||
39 | #include "dis-asm.h" | |
1fd35568 | 40 | |
07fbbd01 | 41 | bool |
40a53766 | 42 | default_displaced_step_hw_singlestep (struct gdbarch *gdbarch) |
99e40580 UW |
43 | { |
44 | return !gdbarch_software_single_step_p (gdbarch); | |
45 | } | |
237fc4c9 PA |
46 | |
47 | CORE_ADDR | |
48 | displaced_step_at_entry_point (struct gdbarch *gdbarch) | |
49 | { | |
50 | CORE_ADDR addr; | |
51 | int bp_len; | |
52 | ||
53 | addr = entry_point_address (); | |
54 | ||
237fc4c9 PA |
55 | /* Inferior calls also use the entry point as a breakpoint location. |
56 | We don't want displaced stepping to interfere with those | |
57 | breakpoints, so leave space. */ | |
58 | gdbarch_breakpoint_from_pc (gdbarch, &addr, &bp_len); | |
5931a2fa | 59 | addr += bp_len * 2; |
237fc4c9 PA |
60 | |
61 | return addr; | |
62 | } | |
63 | ||
4182591f | 64 | int |
e7faf938 | 65 | legacy_register_sim_regno (struct gdbarch *gdbarch, int regnum) |
4182591f AC |
66 | { |
67 | /* Only makes sense to supply raw registers. */ | |
e7faf938 | 68 | gdb_assert (regnum >= 0 && regnum < gdbarch_num_regs (gdbarch)); |
4182591f AC |
69 | /* NOTE: cagney/2002-05-13: The old code did it this way and it is |
70 | suspected that some GDB/SIM combinations may rely on this | |
85102364 | 71 | behaviour. The default should be one2one_register_sim_regno |
4182591f | 72 | (below). */ |
e7faf938 MD |
73 | if (gdbarch_register_name (gdbarch, regnum) != NULL |
74 | && gdbarch_register_name (gdbarch, regnum)[0] != '\0') | |
4182591f AC |
75 | return regnum; |
76 | else | |
77 | return LEGACY_SIM_REGNO_IGNORE; | |
78 | } | |
79 | ||
c193949e LM |
80 | |
81 | /* See arch-utils.h */ | |
82 | ||
83 | std::string | |
84 | default_memtag_to_string (struct gdbarch *gdbarch, struct value *tag) | |
85 | { | |
86 | error (_("This architecture has no method to convert a memory tag to" | |
87 | " a string.")); | |
88 | } | |
89 | ||
90 | /* See arch-utils.h */ | |
91 | ||
92 | bool | |
93 | default_tagged_address_p (struct gdbarch *gdbarch, struct value *address) | |
94 | { | |
95 | /* By default, assume the address is untagged. */ | |
96 | return false; | |
97 | } | |
98 | ||
99 | /* See arch-utils.h */ | |
100 | ||
101 | bool | |
102 | default_memtag_matches_p (struct gdbarch *gdbarch, struct value *address) | |
103 | { | |
104 | /* By default, assume the tags match. */ | |
105 | return true; | |
106 | } | |
107 | ||
108 | /* See arch-utils.h */ | |
109 | ||
110 | bool | |
111 | default_set_memtags (struct gdbarch *gdbarch, struct value *address, | |
112 | size_t length, const gdb::byte_vector &tags, | |
113 | memtag_type tag_type) | |
114 | { | |
115 | /* By default, return true (successful); */ | |
116 | return true; | |
117 | } | |
118 | ||
119 | /* See arch-utils.h */ | |
120 | ||
121 | struct value * | |
122 | default_get_memtag (struct gdbarch *gdbarch, struct value *address, | |
123 | memtag_type tag_type) | |
124 | { | |
125 | /* By default, return no tag. */ | |
126 | return nullptr; | |
127 | } | |
128 | ||
bdcd319a | 129 | CORE_ADDR |
52f729a7 | 130 | generic_skip_trampoline_code (struct frame_info *frame, CORE_ADDR pc) |
bdcd319a CV |
131 | { |
132 | return 0; | |
133 | } | |
134 | ||
dea0c52f | 135 | CORE_ADDR |
4c8c40e6 | 136 | generic_skip_solib_resolver (struct gdbarch *gdbarch, CORE_ADDR pc) |
dea0c52f MK |
137 | { |
138 | return 0; | |
139 | } | |
140 | ||
d50355b6 | 141 | int |
e17a4113 | 142 | generic_in_solib_return_trampoline (struct gdbarch *gdbarch, |
2c02bd72 | 143 | CORE_ADDR pc, const char *name) |
d50355b6 MS |
144 | { |
145 | return 0; | |
146 | } | |
147 | ||
c12260ac | 148 | int |
c9cf6e20 | 149 | generic_stack_frame_destroyed_p (struct gdbarch *gdbarch, CORE_ADDR pc) |
c12260ac CV |
150 | { |
151 | return 0; | |
152 | } | |
153 | ||
7eb89530 YQ |
154 | int |
155 | default_code_of_frame_writable (struct gdbarch *gdbarch, | |
156 | struct frame_info *frame) | |
157 | { | |
158 | return 1; | |
159 | } | |
160 | ||
4d1e7dd1 | 161 | /* Helper functions for gdbarch_inner_than */ |
3339cf8b AC |
162 | |
163 | int | |
fba45db2 | 164 | core_addr_lessthan (CORE_ADDR lhs, CORE_ADDR rhs) |
3339cf8b AC |
165 | { |
166 | return (lhs < rhs); | |
167 | } | |
168 | ||
169 | int | |
fba45db2 | 170 | core_addr_greaterthan (CORE_ADDR lhs, CORE_ADDR rhs) |
3339cf8b AC |
171 | { |
172 | return (lhs > rhs); | |
173 | } | |
174 | ||
0e2de366 | 175 | /* Misc helper functions for targets. */ |
193e3b1a | 176 | |
f517ea4e | 177 | CORE_ADDR |
24568a2c | 178 | core_addr_identity (struct gdbarch *gdbarch, CORE_ADDR addr) |
f517ea4e PS |
179 | { |
180 | return addr; | |
181 | } | |
182 | ||
e2d0e7eb AC |
183 | CORE_ADDR |
184 | convert_from_func_ptr_addr_identity (struct gdbarch *gdbarch, CORE_ADDR addr, | |
185 | struct target_ops *targ) | |
186 | { | |
187 | return addr; | |
188 | } | |
189 | ||
88c72b7d | 190 | int |
d3f73121 | 191 | no_op_reg_to_regnum (struct gdbarch *gdbarch, int reg) |
88c72b7d AC |
192 | { |
193 | return reg; | |
194 | } | |
195 | ||
a2cf933a | 196 | void |
3e29f34a | 197 | default_coff_make_msymbol_special (int val, struct minimal_symbol *msym) |
a2cf933a EZ |
198 | { |
199 | return; | |
200 | } | |
201 | ||
3e29f34a MR |
202 | /* See arch-utils.h. */ |
203 | ||
a2cf933a | 204 | void |
3e29f34a | 205 | default_make_symbol_special (struct symbol *sym, struct objfile *objfile) |
a2cf933a EZ |
206 | { |
207 | return; | |
208 | } | |
209 | ||
3e29f34a MR |
210 | /* See arch-utils.h. */ |
211 | ||
212 | CORE_ADDR | |
213 | default_adjust_dwarf2_addr (CORE_ADDR pc) | |
214 | { | |
215 | return pc; | |
216 | } | |
217 | ||
218 | /* See arch-utils.h. */ | |
219 | ||
220 | CORE_ADDR | |
221 | default_adjust_dwarf2_line (CORE_ADDR addr, int rel) | |
222 | { | |
223 | return addr; | |
224 | } | |
225 | ||
b41c5a85 JW |
226 | /* See arch-utils.h. */ |
227 | ||
228 | bool | |
229 | default_execute_dwarf_cfa_vendor_op (struct gdbarch *gdbarch, gdb_byte op, | |
230 | struct dwarf2_frame_state *fs) | |
231 | { | |
232 | return false; | |
233 | } | |
234 | ||
01fb7433 | 235 | int |
64a3914f | 236 | cannot_register_not (struct gdbarch *gdbarch, int regnum) |
01fb7433 AC |
237 | { |
238 | return 0; | |
239 | } | |
39d4ef09 AC |
240 | |
241 | /* Legacy version of target_virtual_frame_pointer(). Assumes that | |
0e2de366 MS |
242 | there is an gdbarch_deprecated_fp_regnum and that it is the same, |
243 | cooked or raw. */ | |
39d4ef09 AC |
244 | |
245 | void | |
a54fba4c MD |
246 | legacy_virtual_frame_pointer (struct gdbarch *gdbarch, |
247 | CORE_ADDR pc, | |
39d4ef09 AC |
248 | int *frame_regnum, |
249 | LONGEST *frame_offset) | |
250 | { | |
20bcf01c AC |
251 | /* FIXME: cagney/2002-09-13: This code is used when identifying the |
252 | frame pointer of the current PC. It is assuming that a single | |
253 | register and an offset can determine this. I think it should | |
254 | instead generate a byte code expression as that would work better | |
255 | with things like Dwarf2's CFI. */ | |
a54fba4c MD |
256 | if (gdbarch_deprecated_fp_regnum (gdbarch) >= 0 |
257 | && gdbarch_deprecated_fp_regnum (gdbarch) | |
258 | < gdbarch_num_regs (gdbarch)) | |
259 | *frame_regnum = gdbarch_deprecated_fp_regnum (gdbarch); | |
260 | else if (gdbarch_sp_regnum (gdbarch) >= 0 | |
261 | && gdbarch_sp_regnum (gdbarch) | |
dda83cd7 | 262 | < gdbarch_num_regs (gdbarch)) |
a54fba4c | 263 | *frame_regnum = gdbarch_sp_regnum (gdbarch); |
20bcf01c AC |
264 | else |
265 | /* Should this be an internal error? I guess so, it is reflecting | |
266 | an architectural limitation in the current design. */ | |
0e2de366 MS |
267 | internal_error (__FILE__, __LINE__, |
268 | _("No virtual frame pointer available")); | |
39d4ef09 AC |
269 | *frame_offset = 0; |
270 | } | |
46cd78fb | 271 | |
9b790ce7 UW |
272 | /* Return a floating-point format for a floating-point variable of |
273 | length LEN in bits. If non-NULL, NAME is the name of its type. | |
274 | If no suitable type is found, return NULL. */ | |
275 | ||
276 | const struct floatformat ** | |
277 | default_floatformat_for_type (struct gdbarch *gdbarch, | |
278 | const char *name, int len) | |
279 | { | |
280 | const struct floatformat **format = NULL; | |
281 | ||
1b6b755e LM |
282 | /* Check if this is a bfloat16 type. It has the same size as the |
283 | IEEE half float type, so we use the base type name to tell them | |
284 | apart. */ | |
285 | if (name != nullptr && strcmp (name, "__bf16") == 0 | |
286 | && len == gdbarch_bfloat16_bit (gdbarch)) | |
287 | format = gdbarch_bfloat16_format (gdbarch); | |
288 | else if (len == gdbarch_half_bit (gdbarch)) | |
9b790ce7 UW |
289 | format = gdbarch_half_format (gdbarch); |
290 | else if (len == gdbarch_float_bit (gdbarch)) | |
291 | format = gdbarch_float_format (gdbarch); | |
292 | else if (len == gdbarch_double_bit (gdbarch)) | |
293 | format = gdbarch_double_format (gdbarch); | |
294 | else if (len == gdbarch_long_double_bit (gdbarch)) | |
295 | format = gdbarch_long_double_format (gdbarch); | |
296 | /* On i386 the 'long double' type takes 96 bits, | |
297 | while the real number of used bits is only 80, | |
298 | both in processor and in memory. | |
299 | The code below accepts the real bit size. */ | |
300 | else if (gdbarch_long_double_format (gdbarch) != NULL | |
301 | && len == gdbarch_long_double_format (gdbarch)[0]->totalsize) | |
302 | format = gdbarch_long_double_format (gdbarch); | |
303 | ||
304 | return format; | |
305 | } | |
d7bd68ca | 306 | \f |
13d01224 | 307 | int |
76a8ddb9 UW |
308 | generic_convert_register_p (struct gdbarch *gdbarch, int regnum, |
309 | struct type *type) | |
13d01224 | 310 | { |
9730f241 | 311 | return 0; |
13d01224 AC |
312 | } |
313 | ||
192cb3d4 MK |
314 | int |
315 | default_stabs_argument_has_addr (struct gdbarch *gdbarch, struct type *type) | |
316 | { | |
192cb3d4 MK |
317 | return 0; |
318 | } | |
319 | ||
3ca64954 RC |
320 | int |
321 | generic_instruction_nullified (struct gdbarch *gdbarch, | |
322 | struct regcache *regcache) | |
323 | { | |
324 | return 0; | |
325 | } | |
326 | ||
123dc839 DJ |
327 | int |
328 | default_remote_register_number (struct gdbarch *gdbarch, | |
329 | int regno) | |
330 | { | |
331 | return regno; | |
332 | } | |
333 | ||
3437254d PA |
334 | /* See arch-utils.h. */ |
335 | ||
336 | int | |
337 | default_vsyscall_range (struct gdbarch *gdbarch, struct mem_range *range) | |
338 | { | |
339 | return 0; | |
340 | } | |
341 | ||
01fb7433 | 342 | \f |
b4a20239 AC |
343 | /* Functions to manipulate the endianness of the target. */ |
344 | ||
f486487f | 345 | static enum bfd_endian target_byte_order_user = BFD_ENDIAN_UNKNOWN; |
b4a20239 | 346 | |
53904c9e AC |
347 | static const char endian_big[] = "big"; |
348 | static const char endian_little[] = "little"; | |
349 | static const char endian_auto[] = "auto"; | |
40478521 | 350 | static const char *const endian_enum[] = |
b4a20239 AC |
351 | { |
352 | endian_big, | |
353 | endian_little, | |
354 | endian_auto, | |
355 | NULL, | |
356 | }; | |
53904c9e | 357 | static const char *set_endian_string; |
b4a20239 | 358 | |
b6d373df DJ |
359 | enum bfd_endian |
360 | selected_byte_order (void) | |
361 | { | |
e17c207e | 362 | return target_byte_order_user; |
b6d373df DJ |
363 | } |
364 | ||
b4a20239 AC |
365 | /* Called by ``show endian''. */ |
366 | ||
367 | static void | |
7ab04401 AC |
368 | show_endian (struct ui_file *file, int from_tty, struct cmd_list_element *c, |
369 | const char *value) | |
b4a20239 | 370 | { |
7b6b9e83 | 371 | if (target_byte_order_user == BFD_ENDIAN_UNKNOWN) |
e17c207e | 372 | if (gdbarch_byte_order (get_current_arch ()) == BFD_ENDIAN_BIG) |
7ab04401 | 373 | fprintf_unfiltered (file, _("The target endianness is set automatically " |
f63dcaf8 | 374 | "(currently big endian).\n")); |
edefbb7c | 375 | else |
7ab04401 | 376 | fprintf_unfiltered (file, _("The target endianness is set automatically " |
f63dcaf8 | 377 | "(currently little endian).\n")); |
b4a20239 | 378 | else |
e17c207e | 379 | if (target_byte_order_user == BFD_ENDIAN_BIG) |
7ab04401 | 380 | fprintf_unfiltered (file, |
f63dcaf8 | 381 | _("The target is set to big endian.\n")); |
7ab04401 AC |
382 | else |
383 | fprintf_unfiltered (file, | |
f63dcaf8 | 384 | _("The target is set to little endian.\n")); |
b4a20239 AC |
385 | } |
386 | ||
387 | static void | |
eb4c3f4a | 388 | set_endian (const char *ignore_args, int from_tty, struct cmd_list_element *c) |
b4a20239 | 389 | { |
7a107747 DJ |
390 | struct gdbarch_info info; |
391 | ||
3fd3d7d2 | 392 | if (set_endian_string == endian_auto) |
b4a20239 | 393 | { |
7a107747 DJ |
394 | target_byte_order_user = BFD_ENDIAN_UNKNOWN; |
395 | if (! gdbarch_update_p (info)) | |
396 | internal_error (__FILE__, __LINE__, | |
397 | _("set_endian: architecture update failed")); | |
b4a20239 AC |
398 | } |
399 | else if (set_endian_string == endian_little) | |
400 | { | |
d90cf509 AC |
401 | info.byte_order = BFD_ENDIAN_LITTLE; |
402 | if (! gdbarch_update_p (info)) | |
edefbb7c | 403 | printf_unfiltered (_("Little endian target not supported by GDB\n")); |
7a107747 DJ |
404 | else |
405 | target_byte_order_user = BFD_ENDIAN_LITTLE; | |
b4a20239 AC |
406 | } |
407 | else if (set_endian_string == endian_big) | |
408 | { | |
d90cf509 AC |
409 | info.byte_order = BFD_ENDIAN_BIG; |
410 | if (! gdbarch_update_p (info)) | |
edefbb7c | 411 | printf_unfiltered (_("Big endian target not supported by GDB\n")); |
7a107747 DJ |
412 | else |
413 | target_byte_order_user = BFD_ENDIAN_BIG; | |
b4a20239 AC |
414 | } |
415 | else | |
8e65ff28 | 416 | internal_error (__FILE__, __LINE__, |
edefbb7c | 417 | _("set_endian: bad value")); |
7a107747 | 418 | |
7ab04401 | 419 | show_endian (gdb_stdout, from_tty, NULL, NULL); |
b4a20239 AC |
420 | } |
421 | ||
23181151 | 422 | /* Given SELECTED, a currently selected BFD architecture, and |
e35359c5 UW |
423 | TARGET_DESC, the current target description, return what |
424 | architecture to use. | |
425 | ||
426 | SELECTED may be NULL, in which case we return the architecture | |
427 | associated with TARGET_DESC. If SELECTED specifies a variant | |
85102364 | 428 | of the architecture associated with TARGET_DESC, return the |
e35359c5 UW |
429 | more specific of the two. |
430 | ||
431 | If SELECTED is a different architecture, but it is accepted as | |
432 | compatible by the target, we can use the target architecture. | |
433 | ||
434 | If SELECTED is obviously incompatible, warn the user. */ | |
23181151 DJ |
435 | |
436 | static const struct bfd_arch_info * | |
e35359c5 UW |
437 | choose_architecture_for_target (const struct target_desc *target_desc, |
438 | const struct bfd_arch_info *selected) | |
23181151 | 439 | { |
e35359c5 | 440 | const struct bfd_arch_info *from_target = tdesc_architecture (target_desc); |
23181151 DJ |
441 | const struct bfd_arch_info *compat1, *compat2; |
442 | ||
443 | if (selected == NULL) | |
444 | return from_target; | |
445 | ||
446 | if (from_target == NULL) | |
447 | return selected; | |
448 | ||
449 | /* struct bfd_arch_info objects are singletons: that is, there's | |
450 | supposed to be exactly one instance for a given machine. So you | |
451 | can tell whether two are equivalent by comparing pointers. */ | |
452 | if (from_target == selected) | |
453 | return selected; | |
454 | ||
455 | /* BFD's 'A->compatible (A, B)' functions return zero if A and B are | |
456 | incompatible. But if they are compatible, it returns the 'more | |
457 | featureful' of the two arches. That is, if A can run code | |
458 | written for B, but B can't run code written for A, then it'll | |
459 | return A. | |
460 | ||
461 | Some targets (e.g. MIPS as of 2006-12-04) don't fully | |
462 | implement this, instead always returning NULL or the first | |
463 | argument. We detect that case by checking both directions. */ | |
464 | ||
465 | compat1 = selected->compatible (selected, from_target); | |
466 | compat2 = from_target->compatible (from_target, selected); | |
467 | ||
468 | if (compat1 == NULL && compat2 == NULL) | |
469 | { | |
0e2de366 MS |
470 | /* BFD considers the architectures incompatible. Check our |
471 | target description whether it accepts SELECTED as compatible | |
472 | anyway. */ | |
e35359c5 UW |
473 | if (tdesc_compatible_p (target_desc, selected)) |
474 | return from_target; | |
475 | ||
23181151 DJ |
476 | warning (_("Selected architecture %s is not compatible " |
477 | "with reported target architecture %s"), | |
478 | selected->printable_name, from_target->printable_name); | |
479 | return selected; | |
480 | } | |
481 | ||
482 | if (compat1 == NULL) | |
483 | return compat2; | |
484 | if (compat2 == NULL) | |
485 | return compat1; | |
486 | if (compat1 == compat2) | |
487 | return compat1; | |
488 | ||
0e2de366 MS |
489 | /* If the two didn't match, but one of them was a default |
490 | architecture, assume the more specific one is correct. This | |
491 | handles the case where an executable or target description just | |
492 | says "mips", but the other knows which MIPS variant. */ | |
23181151 DJ |
493 | if (compat1->the_default) |
494 | return compat2; | |
495 | if (compat2->the_default) | |
496 | return compat1; | |
497 | ||
498 | /* We have no idea which one is better. This is a bug, but not | |
499 | a critical problem; warn the user. */ | |
500 | warning (_("Selected architecture %s is ambiguous with " | |
501 | "reported target architecture %s"), | |
502 | selected->printable_name, from_target->printable_name); | |
503 | return selected; | |
504 | } | |
505 | ||
0e2de366 | 506 | /* Functions to manipulate the architecture of the target. */ |
b4a20239 AC |
507 | |
508 | enum set_arch { set_arch_auto, set_arch_manual }; | |
509 | ||
7a107747 | 510 | static const struct bfd_arch_info *target_architecture_user; |
b4a20239 | 511 | |
a8cf2722 AC |
512 | static const char *set_architecture_string; |
513 | ||
514 | const char * | |
515 | selected_architecture_name (void) | |
516 | { | |
7a107747 | 517 | if (target_architecture_user == NULL) |
a8cf2722 AC |
518 | return NULL; |
519 | else | |
520 | return set_architecture_string; | |
521 | } | |
b4a20239 | 522 | |
b4a20239 | 523 | /* Called if the user enters ``show architecture'' without an |
0e2de366 | 524 | argument. */ |
b4a20239 AC |
525 | |
526 | static void | |
7ab04401 AC |
527 | show_architecture (struct ui_file *file, int from_tty, |
528 | struct cmd_list_element *c, const char *value) | |
b4a20239 | 529 | { |
7a107747 | 530 | if (target_architecture_user == NULL) |
ccb9eba6 AB |
531 | fprintf_filtered (file, _("The target architecture is set to " |
532 | "\"auto\" (currently \"%s\").\n"), | |
3e43a32a | 533 | gdbarch_bfd_arch_info (get_current_arch ())->printable_name); |
b4a20239 | 534 | else |
ccb9eba6 | 535 | fprintf_filtered (file, _("The target architecture is set to \"%s\".\n"), |
3e43a32a | 536 | set_architecture_string); |
b4a20239 AC |
537 | } |
538 | ||
539 | ||
540 | /* Called if the user enters ``set architecture'' with or without an | |
0e2de366 | 541 | argument. */ |
b4a20239 AC |
542 | |
543 | static void | |
eb4c3f4a TT |
544 | set_architecture (const char *ignore_args, |
545 | int from_tty, struct cmd_list_element *c) | |
b4a20239 | 546 | { |
7a107747 DJ |
547 | struct gdbarch_info info; |
548 | ||
b4a20239 AC |
549 | if (strcmp (set_architecture_string, "auto") == 0) |
550 | { | |
7a107747 DJ |
551 | target_architecture_user = NULL; |
552 | if (!gdbarch_update_p (info)) | |
553 | internal_error (__FILE__, __LINE__, | |
554 | _("could not select an architecture automatically")); | |
b4a20239 | 555 | } |
d90cf509 | 556 | else |
b4a20239 | 557 | { |
b4a20239 AC |
558 | info.bfd_arch_info = bfd_scan_arch (set_architecture_string); |
559 | if (info.bfd_arch_info == NULL) | |
8e65ff28 | 560 | internal_error (__FILE__, __LINE__, |
edefbb7c | 561 | _("set_architecture: bfd_scan_arch failed")); |
16f33e29 | 562 | if (gdbarch_update_p (info)) |
7a107747 | 563 | target_architecture_user = info.bfd_arch_info; |
b4a20239 | 564 | else |
edefbb7c | 565 | printf_unfiltered (_("Architecture `%s' not recognized.\n"), |
b4a20239 AC |
566 | set_architecture_string); |
567 | } | |
7ab04401 | 568 | show_architecture (gdb_stdout, from_tty, NULL, NULL); |
b4a20239 AC |
569 | } |
570 | ||
ebdba546 | 571 | /* Try to select a global architecture that matches "info". Return |
0f9741f2 | 572 | non-zero if the attempt succeeds. */ |
ebdba546 AC |
573 | int |
574 | gdbarch_update_p (struct gdbarch_info info) | |
575 | { | |
a7f1256d UW |
576 | struct gdbarch *new_gdbarch; |
577 | ||
578 | /* Check for the current file. */ | |
579 | if (info.abfd == NULL) | |
7e10abd1 | 580 | info.abfd = current_program_space->exec_bfd (); |
a7f1256d UW |
581 | if (info.abfd == NULL) |
582 | info.abfd = core_bfd; | |
583 | ||
584 | /* Check for the current target description. */ | |
585 | if (info.target_desc == NULL) | |
586 | info.target_desc = target_current_description (); | |
587 | ||
588 | new_gdbarch = gdbarch_find_by_info (info); | |
ebdba546 AC |
589 | |
590 | /* If there no architecture by that name, reject the request. */ | |
591 | if (new_gdbarch == NULL) | |
592 | { | |
593 | if (gdbarch_debug) | |
594 | fprintf_unfiltered (gdb_stdlog, "gdbarch_update_p: " | |
595 | "Architecture not found\n"); | |
596 | return 0; | |
597 | } | |
598 | ||
599 | /* If it is the same old architecture, accept the request (but don't | |
600 | swap anything). */ | |
f5656ead | 601 | if (new_gdbarch == target_gdbarch ()) |
ebdba546 AC |
602 | { |
603 | if (gdbarch_debug) | |
604 | fprintf_unfiltered (gdb_stdlog, "gdbarch_update_p: " | |
e3cb3832 JB |
605 | "Architecture %s (%s) unchanged\n", |
606 | host_address_to_string (new_gdbarch), | |
ebdba546 AC |
607 | gdbarch_bfd_arch_info (new_gdbarch)->printable_name); |
608 | return 1; | |
609 | } | |
610 | ||
611 | /* It's a new architecture, swap it in. */ | |
612 | if (gdbarch_debug) | |
613 | fprintf_unfiltered (gdb_stdlog, "gdbarch_update_p: " | |
e3cb3832 JB |
614 | "New architecture %s (%s) selected\n", |
615 | host_address_to_string (new_gdbarch), | |
ebdba546 | 616 | gdbarch_bfd_arch_info (new_gdbarch)->printable_name); |
aff68abb | 617 | set_target_gdbarch (new_gdbarch); |
ebdba546 AC |
618 | |
619 | return 1; | |
620 | } | |
621 | ||
2b026650 MK |
622 | /* Return the architecture for ABFD. If no suitable architecture |
623 | could be find, return NULL. */ | |
624 | ||
625 | struct gdbarch * | |
626 | gdbarch_from_bfd (bfd *abfd) | |
b4a20239 | 627 | { |
d90cf509 | 628 | struct gdbarch_info info; |
05c547f6 | 629 | |
d90cf509 | 630 | info.abfd = abfd; |
b60eb90d | 631 | return gdbarch_find_by_info (info); |
2b026650 MK |
632 | } |
633 | ||
634 | /* Set the dynamic target-system-dependent parameters (architecture, | |
635 | byte-order) using information found in the BFD */ | |
636 | ||
637 | void | |
638 | set_gdbarch_from_file (bfd *abfd) | |
639 | { | |
a7f1256d | 640 | struct gdbarch_info info; |
2b026650 MK |
641 | struct gdbarch *gdbarch; |
642 | ||
a7f1256d UW |
643 | info.abfd = abfd; |
644 | info.target_desc = target_current_description (); | |
645 | gdbarch = gdbarch_find_by_info (info); | |
646 | ||
2b026650 | 647 | if (gdbarch == NULL) |
8a3fe4f8 | 648 | error (_("Architecture of file not recognized.")); |
aff68abb | 649 | set_target_gdbarch (gdbarch); |
b4a20239 AC |
650 | } |
651 | ||
652 | /* Initialize the current architecture. Update the ``set | |
653 | architecture'' command so that it specifies a list of valid | |
654 | architectures. */ | |
655 | ||
1ba607ad AC |
656 | #ifdef DEFAULT_BFD_ARCH |
657 | extern const bfd_arch_info_type DEFAULT_BFD_ARCH; | |
658 | static const bfd_arch_info_type *default_bfd_arch = &DEFAULT_BFD_ARCH; | |
659 | #else | |
4b9b3959 | 660 | static const bfd_arch_info_type *default_bfd_arch; |
1ba607ad AC |
661 | #endif |
662 | ||
663 | #ifdef DEFAULT_BFD_VEC | |
664 | extern const bfd_target DEFAULT_BFD_VEC; | |
665 | static const bfd_target *default_bfd_vec = &DEFAULT_BFD_VEC; | |
666 | #else | |
667 | static const bfd_target *default_bfd_vec; | |
668 | #endif | |
669 | ||
f486487f | 670 | static enum bfd_endian default_byte_order = BFD_ENDIAN_UNKNOWN; |
7a107747 | 671 | |
b4a20239 AC |
672 | void |
673 | initialize_current_architecture (void) | |
674 | { | |
675 | const char **arches = gdbarch_printable_names (); | |
1ba607ad | 676 | |
0e2de366 | 677 | /* Find a default architecture. */ |
7a107747 | 678 | if (default_bfd_arch == NULL) |
b4a20239 | 679 | { |
1ba607ad | 680 | /* Choose the architecture by taking the first one |
0e2de366 | 681 | alphabetically. */ |
1ba607ad | 682 | const char *chosen = arches[0]; |
b4a20239 | 683 | const char **arch; |
b4a20239 AC |
684 | for (arch = arches; *arch != NULL; arch++) |
685 | { | |
b4a20239 AC |
686 | if (strcmp (*arch, chosen) < 0) |
687 | chosen = *arch; | |
688 | } | |
689 | if (chosen == NULL) | |
8e65ff28 | 690 | internal_error (__FILE__, __LINE__, |
edefbb7c | 691 | _("initialize_current_architecture: No arch")); |
7a107747 DJ |
692 | default_bfd_arch = bfd_scan_arch (chosen); |
693 | if (default_bfd_arch == NULL) | |
8e65ff28 | 694 | internal_error (__FILE__, __LINE__, |
edefbb7c | 695 | _("initialize_current_architecture: Arch not found")); |
1ba607ad AC |
696 | } |
697 | ||
b447dd03 | 698 | gdbarch_info info; |
7a107747 DJ |
699 | info.bfd_arch_info = default_bfd_arch; |
700 | ||
afe64c1a | 701 | /* Take several guesses at a byte order. */ |
7a107747 | 702 | if (default_byte_order == BFD_ENDIAN_UNKNOWN |
1ba607ad AC |
703 | && default_bfd_vec != NULL) |
704 | { | |
0e2de366 | 705 | /* Extract BFD's default vector's byte order. */ |
1ba607ad AC |
706 | switch (default_bfd_vec->byteorder) |
707 | { | |
708 | case BFD_ENDIAN_BIG: | |
7a107747 | 709 | default_byte_order = BFD_ENDIAN_BIG; |
1ba607ad AC |
710 | break; |
711 | case BFD_ENDIAN_LITTLE: | |
7a107747 | 712 | default_byte_order = BFD_ENDIAN_LITTLE; |
1ba607ad AC |
713 | break; |
714 | default: | |
715 | break; | |
716 | } | |
717 | } | |
7a107747 | 718 | if (default_byte_order == BFD_ENDIAN_UNKNOWN) |
1ba607ad | 719 | { |
0e2de366 | 720 | /* look for ``*el-*'' in the target name. */ |
1ba607ad AC |
721 | const char *chp; |
722 | chp = strchr (target_name, '-'); | |
723 | if (chp != NULL | |
724 | && chp - 2 >= target_name | |
61012eef | 725 | && startswith (chp - 2, "el")) |
7a107747 | 726 | default_byte_order = BFD_ENDIAN_LITTLE; |
1ba607ad | 727 | } |
7a107747 | 728 | if (default_byte_order == BFD_ENDIAN_UNKNOWN) |
1ba607ad AC |
729 | { |
730 | /* Wire it to big-endian!!! */ | |
7a107747 | 731 | default_byte_order = BFD_ENDIAN_BIG; |
1ba607ad AC |
732 | } |
733 | ||
7a107747 | 734 | info.byte_order = default_byte_order; |
9d4fde75 | 735 | info.byte_order_for_code = info.byte_order; |
7a107747 | 736 | |
d90cf509 AC |
737 | if (! gdbarch_update_p (info)) |
738 | internal_error (__FILE__, __LINE__, | |
edefbb7c AC |
739 | _("initialize_current_architecture: Selection of " |
740 | "initial architecture failed")); | |
b4a20239 | 741 | |
1ba607ad | 742 | /* Create the ``set architecture'' command appending ``auto'' to the |
0e2de366 | 743 | list of architectures. */ |
b4a20239 | 744 | { |
0e2de366 | 745 | /* Append ``auto''. */ |
b4a20239 AC |
746 | int nr; |
747 | for (nr = 0; arches[nr] != NULL; nr++); | |
224c3ddb | 748 | arches = XRESIZEVEC (const char *, arches, nr + 2); |
b4a20239 AC |
749 | arches[nr + 0] = "auto"; |
750 | arches[nr + 1] = NULL; | |
5e84b7ee SM |
751 | set_show_commands architecture_cmds |
752 | = add_setshow_enum_cmd ("architecture", class_support, | |
753 | arches, &set_architecture_string, | |
754 | _("Set architecture of target."), | |
755 | _("Show architecture of target."), NULL, | |
756 | set_architecture, show_architecture, | |
757 | &setlist, &showlist); | |
758 | add_alias_cmd ("processor", architecture_cmds.set, class_support, 1, | |
759 | &setlist); | |
b4a20239 AC |
760 | } |
761 | } | |
762 | ||
100bcc3f | 763 | /* Similar to init, but this time fill in the blanks. Information is |
7a107747 DJ |
764 | obtained from the global "set ..." options and explicitly |
765 | initialized INFO fields. */ | |
bf922ad9 AC |
766 | |
767 | void | |
7a107747 | 768 | gdbarch_info_fill (struct gdbarch_info *info) |
bf922ad9 AC |
769 | { |
770 | /* "(gdb) set architecture ...". */ | |
771 | if (info->bfd_arch_info == NULL | |
7a107747 DJ |
772 | && target_architecture_user) |
773 | info->bfd_arch_info = target_architecture_user; | |
424163ea | 774 | /* From the file. */ |
bf922ad9 AC |
775 | if (info->bfd_arch_info == NULL |
776 | && info->abfd != NULL | |
777 | && bfd_get_arch (info->abfd) != bfd_arch_unknown | |
778 | && bfd_get_arch (info->abfd) != bfd_arch_obscure) | |
779 | info->bfd_arch_info = bfd_get_arch_info (info->abfd); | |
23181151 DJ |
780 | /* From the target. */ |
781 | if (info->target_desc != NULL) | |
782 | info->bfd_arch_info = choose_architecture_for_target | |
e35359c5 | 783 | (info->target_desc, info->bfd_arch_info); |
7a107747 DJ |
784 | /* From the default. */ |
785 | if (info->bfd_arch_info == NULL) | |
786 | info->bfd_arch_info = default_bfd_arch; | |
bf922ad9 AC |
787 | |
788 | /* "(gdb) set byte-order ...". */ | |
789 | if (info->byte_order == BFD_ENDIAN_UNKNOWN | |
7a107747 DJ |
790 | && target_byte_order_user != BFD_ENDIAN_UNKNOWN) |
791 | info->byte_order = target_byte_order_user; | |
bf922ad9 AC |
792 | /* From the INFO struct. */ |
793 | if (info->byte_order == BFD_ENDIAN_UNKNOWN | |
794 | && info->abfd != NULL) | |
795 | info->byte_order = (bfd_big_endian (info->abfd) ? BFD_ENDIAN_BIG | |
7a107747 DJ |
796 | : bfd_little_endian (info->abfd) ? BFD_ENDIAN_LITTLE |
797 | : BFD_ENDIAN_UNKNOWN); | |
798 | /* From the default. */ | |
799 | if (info->byte_order == BFD_ENDIAN_UNKNOWN) | |
800 | info->byte_order = default_byte_order; | |
9d4fde75 | 801 | info->byte_order_for_code = info->byte_order; |
4b2dfa9d MR |
802 | /* Wire the default to the last selected byte order. */ |
803 | default_byte_order = info->byte_order; | |
bf922ad9 AC |
804 | |
805 | /* "(gdb) set osabi ...". Handled by gdbarch_lookup_osabi. */ | |
08d16641 | 806 | /* From the manual override, or from file. */ |
26540402 | 807 | if (info->osabi == GDB_OSABI_UNKNOWN) |
bf922ad9 | 808 | info->osabi = gdbarch_lookup_osabi (info->abfd); |
08d16641 | 809 | /* From the target. */ |
26540402 | 810 | |
08d16641 PA |
811 | if (info->osabi == GDB_OSABI_UNKNOWN && info->target_desc != NULL) |
812 | info->osabi = tdesc_osabi (info->target_desc); | |
813 | /* From the configured default. */ | |
f4290e2a | 814 | #ifdef GDB_OSABI_DEFAULT |
08d16641 PA |
815 | if (info->osabi == GDB_OSABI_UNKNOWN) |
816 | info->osabi = GDB_OSABI_DEFAULT; | |
f4290e2a | 817 | #endif |
26540402 SM |
818 | /* If we still don't know which osabi to pick, pick none. */ |
819 | if (info->osabi == GDB_OSABI_UNKNOWN) | |
820 | info->osabi = GDB_OSABI_NONE; | |
bf922ad9 AC |
821 | |
822 | /* Must have at least filled in the architecture. */ | |
823 | gdb_assert (info->bfd_arch_info != NULL); | |
824 | } | |
825 | ||
0e2de366 MS |
826 | /* Return "current" architecture. If the target is running, this is |
827 | the architecture of the selected frame. Otherwise, the "current" | |
828 | architecture defaults to the target architecture. | |
e17c207e | 829 | |
0e2de366 MS |
830 | This function should normally be called solely by the command |
831 | interpreter routines to determine the architecture to execute a | |
832 | command in. */ | |
e17c207e UW |
833 | struct gdbarch * |
834 | get_current_arch (void) | |
835 | { | |
836 | if (has_stack_frames ()) | |
837 | return get_frame_arch (get_selected_frame (NULL)); | |
838 | else | |
f5656ead | 839 | return target_gdbarch (); |
e17c207e UW |
840 | } |
841 | ||
6c95b8df PA |
842 | int |
843 | default_has_shared_address_space (struct gdbarch *gdbarch) | |
844 | { | |
845 | /* Simply say no. In most unix-like targets each inferior/process | |
846 | has its own address space. */ | |
847 | return 0; | |
848 | } | |
849 | ||
7a697b8d | 850 | int |
6b940e6a | 851 | default_fast_tracepoint_valid_at (struct gdbarch *gdbarch, CORE_ADDR addr, |
281d762b | 852 | std::string *msg) |
7a697b8d SS |
853 | { |
854 | /* We don't know if maybe the target has some way to do fast | |
855 | tracepoints that doesn't need gdbarch, so always say yes. */ | |
856 | if (msg) | |
281d762b | 857 | msg->clear (); |
7a697b8d SS |
858 | return 1; |
859 | } | |
860 | ||
22f13eb8 YQ |
861 | const gdb_byte * |
862 | default_breakpoint_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr, | |
863 | int *lenptr) | |
864 | { | |
865 | int kind = gdbarch_breakpoint_kind_from_pc (gdbarch, pcptr); | |
866 | ||
867 | return gdbarch_sw_breakpoint_from_kind (gdbarch, kind, lenptr); | |
868 | } | |
833b7ab5 YQ |
869 | int |
870 | default_breakpoint_kind_from_current_state (struct gdbarch *gdbarch, | |
871 | struct regcache *regcache, | |
872 | CORE_ADDR *pcptr) | |
873 | { | |
874 | return gdbarch_breakpoint_kind_from_pc (gdbarch, pcptr); | |
875 | } | |
876 | ||
22f13eb8 | 877 | |
6710bf39 SS |
878 | void |
879 | default_gen_return_address (struct gdbarch *gdbarch, | |
880 | struct agent_expr *ax, struct axs_value *value, | |
881 | CORE_ADDR scope) | |
882 | { | |
883 | error (_("This architecture has no method to collect a return address.")); | |
884 | } | |
885 | ||
18648a37 YQ |
886 | int |
887 | default_return_in_first_hidden_param_p (struct gdbarch *gdbarch, | |
888 | struct type *type) | |
889 | { | |
890 | /* Usually, the return value's address is stored the in the "first hidden" | |
891 | parameter if the return value should be passed by reference, as | |
892 | specified in ABI. */ | |
9d084466 | 893 | return !(language_pass_by_reference (type).trivially_copyable); |
18648a37 YQ |
894 | } |
895 | ||
c2170eef MM |
896 | int default_insn_is_call (struct gdbarch *gdbarch, CORE_ADDR addr) |
897 | { | |
898 | return 0; | |
899 | } | |
900 | ||
901 | int default_insn_is_ret (struct gdbarch *gdbarch, CORE_ADDR addr) | |
902 | { | |
903 | return 0; | |
904 | } | |
905 | ||
906 | int default_insn_is_jump (struct gdbarch *gdbarch, CORE_ADDR addr) | |
907 | { | |
908 | return 0; | |
909 | } | |
910 | ||
5133a315 LM |
911 | /* See arch-utils.h. */ |
912 | ||
913 | bool | |
914 | default_program_breakpoint_here_p (struct gdbarch *gdbarch, | |
915 | CORE_ADDR address) | |
916 | { | |
917 | int len; | |
918 | const gdb_byte *bpoint = gdbarch_breakpoint_from_pc (gdbarch, &address, &len); | |
919 | ||
920 | /* Software breakpoints unsupported? */ | |
921 | if (bpoint == nullptr) | |
922 | return false; | |
923 | ||
924 | gdb_byte *target_mem = (gdb_byte *) alloca (len); | |
925 | ||
926 | /* Enable the automatic memory restoration from breakpoints while | |
927 | we read the memory. Otherwise we may find temporary breakpoints, ones | |
928 | inserted by GDB, and flag them as permanent breakpoints. */ | |
929 | scoped_restore restore_memory | |
930 | = make_scoped_restore_show_memory_breakpoints (0); | |
931 | ||
932 | if (target_read_memory (address, target_mem, len) == 0) | |
933 | { | |
934 | /* Check if this is a breakpoint instruction for this architecture, | |
935 | including ones used by GDB. */ | |
936 | if (memcmp (target_mem, bpoint, len) == 0) | |
937 | return true; | |
938 | } | |
939 | ||
940 | return false; | |
941 | } | |
942 | ||
ae9bb220 PA |
943 | void |
944 | default_skip_permanent_breakpoint (struct regcache *regcache) | |
945 | { | |
ac7936df | 946 | struct gdbarch *gdbarch = regcache->arch (); |
ae9bb220 | 947 | CORE_ADDR current_pc = regcache_read_pc (regcache); |
ae9bb220 PA |
948 | int bp_len; |
949 | ||
ac298888 | 950 | gdbarch_breakpoint_from_pc (gdbarch, ¤t_pc, &bp_len); |
ae9bb220 PA |
951 | current_pc += bp_len; |
952 | regcache_write_pc (regcache, current_pc); | |
953 | } | |
c0e8c252 | 954 | |
f208eee0 JK |
955 | CORE_ADDR |
956 | default_infcall_mmap (CORE_ADDR size, unsigned prot) | |
957 | { | |
958 | error (_("This target does not support inferior memory allocation by mmap.")); | |
959 | } | |
960 | ||
7f361056 JK |
961 | void |
962 | default_infcall_munmap (CORE_ADDR addr, CORE_ADDR size) | |
963 | { | |
964 | /* Memory reserved by inferior mmap is kept leaked. */ | |
965 | } | |
966 | ||
f208eee0 JK |
967 | /* -mcmodel=large is used so that no GOT (Global Offset Table) is needed to be |
968 | created in inferior memory by GDB (normally it is set by ld.so). */ | |
969 | ||
953cff56 | 970 | std::string |
f208eee0 JK |
971 | default_gcc_target_options (struct gdbarch *gdbarch) |
972 | { | |
953cff56 TT |
973 | return string_printf ("-m%d%s", gdbarch_ptr_bit (gdbarch), |
974 | (gdbarch_ptr_bit (gdbarch) == 64 | |
975 | ? " -mcmodel=large" : "")); | |
f208eee0 JK |
976 | } |
977 | ||
ac04f72b TT |
978 | /* gdbarch gnu_triplet_regexp method. */ |
979 | ||
980 | const char * | |
981 | default_gnu_triplet_regexp (struct gdbarch *gdbarch) | |
982 | { | |
983 | return gdbarch_bfd_arch_info (gdbarch)->arch_name; | |
984 | } | |
985 | ||
05f3c0f0 AB |
986 | /* Default method for gdbarch_addressable_memory_unit_size. The default is |
987 | based on the bits_per_byte defined in the bfd library for the current | |
988 | architecture, this is usually 8-bits, and so this function will usually | |
989 | return 1 indicating 1 byte is 1 octet. */ | |
3374165f SM |
990 | |
991 | int | |
992 | default_addressable_memory_unit_size (struct gdbarch *gdbarch) | |
993 | { | |
05f3c0f0 | 994 | return gdbarch_bfd_arch_info (gdbarch)->bits_per_byte / 8; |
3374165f SM |
995 | } |
996 | ||
5f034a78 MK |
997 | void |
998 | default_guess_tracepoint_registers (struct gdbarch *gdbarch, | |
999 | struct regcache *regcache, | |
1000 | CORE_ADDR addr) | |
1001 | { | |
1002 | int pc_regno = gdbarch_pc_regnum (gdbarch); | |
1003 | gdb_byte *regs; | |
1004 | ||
1005 | /* This guessing code below only works if the PC register isn't | |
1006 | a pseudo-register. The value of a pseudo-register isn't stored | |
1007 | in the (non-readonly) regcache -- instead it's recomputed | |
1008 | (probably from some other cached raw register) whenever the | |
1009 | register is read. In this case, a custom method implementation | |
1010 | should be used by the architecture. */ | |
1011 | if (pc_regno < 0 || pc_regno >= gdbarch_num_regs (gdbarch)) | |
1012 | return; | |
1013 | ||
1014 | regs = (gdb_byte *) alloca (register_size (gdbarch, pc_regno)); | |
1015 | store_unsigned_integer (regs, register_size (gdbarch, pc_regno), | |
1016 | gdbarch_byte_order (gdbarch), addr); | |
73e1c03f | 1017 | regcache->raw_supply (pc_regno, regs); |
5f034a78 MK |
1018 | } |
1019 | ||
39503f82 YQ |
1020 | int |
1021 | default_print_insn (bfd_vma memaddr, disassemble_info *info) | |
1022 | { | |
1023 | disassembler_ftype disassemble_fn; | |
1024 | ||
39503f82 | 1025 | disassemble_fn = disassembler (info->arch, info->endian == BFD_ENDIAN_BIG, |
7e10abd1 | 1026 | info->mach, current_program_space->exec_bfd ()); |
39503f82 YQ |
1027 | |
1028 | gdb_assert (disassemble_fn != NULL); | |
1029 | return (*disassemble_fn) (memaddr, info); | |
1030 | } | |
1031 | ||
46a62268 YQ |
1032 | /* See arch-utils.h. */ |
1033 | ||
1034 | CORE_ADDR | |
1035 | gdbarch_skip_prologue_noexcept (gdbarch *gdbarch, CORE_ADDR pc) noexcept | |
1036 | { | |
1037 | CORE_ADDR new_pc = pc; | |
1038 | ||
a70b8144 | 1039 | try |
46a62268 YQ |
1040 | { |
1041 | new_pc = gdbarch_skip_prologue (gdbarch, pc); | |
1042 | } | |
230d2906 | 1043 | catch (const gdb_exception &ex) |
46a62268 | 1044 | {} |
46a62268 YQ |
1045 | |
1046 | return new_pc; | |
1047 | } | |
1048 | ||
1d509aa6 MM |
1049 | /* See arch-utils.h. */ |
1050 | ||
1051 | bool | |
1052 | default_in_indirect_branch_thunk (gdbarch *gdbarch, CORE_ADDR pc) | |
1053 | { | |
1054 | return false; | |
1055 | } | |
1056 | ||
2b4424c3 TT |
1057 | /* See arch-utils.h. */ |
1058 | ||
1059 | ULONGEST | |
1060 | default_type_align (struct gdbarch *gdbarch, struct type *type) | |
1061 | { | |
5561fc30 | 1062 | return 0; |
2b4424c3 TT |
1063 | } |
1064 | ||
aa7ca1bb AH |
1065 | /* See arch-utils.h. */ |
1066 | ||
1067 | std::string | |
1068 | default_get_pc_address_flags (frame_info *frame, CORE_ADDR pc) | |
1069 | { | |
1070 | return ""; | |
1071 | } | |
1072 | ||
7e183d27 KB |
1073 | /* See arch-utils.h. */ |
1074 | void | |
1075 | default_read_core_file_mappings (struct gdbarch *gdbarch, | |
dda83cd7 | 1076 | struct bfd *cbfd, |
7e183d27 KB |
1077 | gdb::function_view<void (ULONGEST count)> |
1078 | pre_loop_cb, | |
1079 | gdb::function_view<void (int num, | |
dda83cd7 | 1080 | ULONGEST start, |
7e183d27 KB |
1081 | ULONGEST end, |
1082 | ULONGEST file_ofs, | |
70125a45 | 1083 | const char *filename)> |
7e183d27 KB |
1084 | loop_cb) |
1085 | { | |
1086 | } | |
1087 | ||
6c265988 | 1088 | void _initialize_gdbarch_utils (); |
c0e8c252 | 1089 | void |
6c265988 | 1090 | _initialize_gdbarch_utils () |
c0e8c252 | 1091 | { |
7ab04401 | 1092 | add_setshow_enum_cmd ("endian", class_support, |
3e43a32a MS |
1093 | endian_enum, &set_endian_string, |
1094 | _("Set endianness of target."), | |
1095 | _("Show endianness of target."), | |
1096 | NULL, set_endian, show_endian, | |
7ab04401 | 1097 | &setlist, &showlist); |
c0e8c252 | 1098 | } |