Commit | Line | Data |
---|---|---|
c0e8c252 | 1 | /* Dynamic architecture support for GDB, the GNU debugger. |
f4f9705a | 2 | |
4be87837 | 3 | Copyright 1998, 1999, 2000, 2001, 2002, 2003 Free Software Foundation, |
f4f9705a | 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. */ | |
c0e8c252 AC |
32 | #include "symtab.h" |
33 | #include "frame.h" | |
34 | #include "inferior.h" | |
35 | #include "breakpoint.h" | |
36 | #include "gdb_wait.h" | |
37 | #include "gdbcore.h" | |
38 | #include "gdbcmd.h" | |
39 | #include "target.h" | |
c0e8c252 | 40 | #include "annotate.h" |
c0e8c252 | 41 | #endif |
5f8a3188 | 42 | #include "gdb_string.h" |
fbec36e2 | 43 | #include "regcache.h" |
39d4ef09 | 44 | #include "gdb_assert.h" |
4182591f | 45 | #include "sim-regno.h" |
c0e8c252 | 46 | |
1ba607ad AC |
47 | #include "version.h" |
48 | ||
f0d4cc9e AC |
49 | #include "floatformat.h" |
50 | ||
049ee0e4 AC |
51 | /* Implementation of extract return value that grubs around in the |
52 | register cache. */ | |
53 | void | |
54 | legacy_extract_return_value (struct type *type, struct regcache *regcache, | |
ebba8386 | 55 | void *valbuf) |
049ee0e4 AC |
56 | { |
57 | char *registers = deprecated_grub_regcache_for_registers (regcache); | |
ebba8386 | 58 | bfd_byte *buf = valbuf; |
524d7c18 | 59 | DEPRECATED_EXTRACT_RETURN_VALUE (type, registers, buf); /* OK */ |
049ee0e4 AC |
60 | } |
61 | ||
ebba8386 AC |
62 | /* Implementation of store return value that grubs the register cache. |
63 | Takes a local copy of the buffer to avoid const problems. */ | |
64 | void | |
65 | legacy_store_return_value (struct type *type, struct regcache *regcache, | |
66 | const void *buf) | |
67 | { | |
68 | bfd_byte *b = alloca (TYPE_LENGTH (type)); | |
69 | gdb_assert (regcache == current_regcache); | |
70 | memcpy (b, buf, TYPE_LENGTH (type)); | |
71 | DEPRECATED_STORE_RETURN_VALUE (type, b); | |
72 | } | |
73 | ||
74 | ||
1fd35568 JB |
75 | int |
76 | always_use_struct_convention (int gcc_p, struct type *value_type) | |
77 | { | |
78 | return 1; | |
79 | } | |
80 | ||
81 | ||
4182591f AC |
82 | int |
83 | legacy_register_sim_regno (int regnum) | |
84 | { | |
85 | /* Only makes sense to supply raw registers. */ | |
86 | gdb_assert (regnum >= 0 && regnum < NUM_REGS); | |
87 | /* NOTE: cagney/2002-05-13: The old code did it this way and it is | |
88 | suspected that some GDB/SIM combinations may rely on this | |
89 | behavour. The default should be one2one_register_sim_regno | |
90 | (below). */ | |
91 | if (REGISTER_NAME (regnum) != NULL | |
92 | && REGISTER_NAME (regnum)[0] != '\0') | |
93 | return regnum; | |
94 | else | |
95 | return LEGACY_SIM_REGNO_IGNORE; | |
96 | } | |
97 | ||
c0e8c252 AC |
98 | int |
99 | generic_frameless_function_invocation_not (struct frame_info *fi) | |
100 | { | |
101 | return 0; | |
102 | } | |
103 | ||
71a9f22e JB |
104 | int |
105 | generic_return_value_on_stack_not (struct type *type) | |
106 | { | |
107 | return 0; | |
108 | } | |
109 | ||
bdcd319a CV |
110 | CORE_ADDR |
111 | generic_skip_trampoline_code (CORE_ADDR pc) | |
112 | { | |
113 | return 0; | |
114 | } | |
115 | ||
68e9cc94 CV |
116 | int |
117 | generic_in_solib_call_trampoline (CORE_ADDR pc, char *name) | |
118 | { | |
119 | return 0; | |
120 | } | |
121 | ||
d50355b6 MS |
122 | int |
123 | generic_in_solib_return_trampoline (CORE_ADDR pc, char *name) | |
124 | { | |
125 | return 0; | |
126 | } | |
127 | ||
c12260ac CV |
128 | int |
129 | generic_in_function_epilogue_p (struct gdbarch *gdbarch, CORE_ADDR pc) | |
130 | { | |
131 | return 0; | |
132 | } | |
133 | ||
c0e8c252 AC |
134 | #if defined (CALL_DUMMY) |
135 | LONGEST legacy_call_dummy_words[] = CALL_DUMMY; | |
136 | #else | |
137 | LONGEST legacy_call_dummy_words[1]; | |
138 | #endif | |
139 | int legacy_sizeof_call_dummy_words = sizeof (legacy_call_dummy_words); | |
140 | ||
141 | void | |
f6684c31 AC |
142 | generic_remote_translate_xfer_address (struct gdbarch *gdbarch, |
143 | struct regcache *regcache, | |
144 | CORE_ADDR gdb_addr, int gdb_len, | |
c0e8c252 AC |
145 | CORE_ADDR * rem_addr, int *rem_len) |
146 | { | |
147 | *rem_addr = gdb_addr; | |
148 | *rem_len = gdb_len; | |
149 | } | |
150 | ||
dad41f9a AC |
151 | int |
152 | generic_prologue_frameless_p (CORE_ADDR ip) | |
153 | { | |
dad41f9a | 154 | return ip == SKIP_PROLOGUE (ip); |
dad41f9a AC |
155 | } |
156 | ||
2bf0cb65 EZ |
157 | /* New/multi-arched targets should use the correct gdbarch field |
158 | instead of using this global pointer. */ | |
159 | int | |
160 | legacy_print_insn (bfd_vma vma, disassemble_info *info) | |
161 | { | |
d7a27068 | 162 | return (*deprecated_tm_print_insn) (vma, info); |
2bf0cb65 | 163 | } |
dad41f9a | 164 | |
3339cf8b AC |
165 | /* Helper functions for INNER_THAN */ |
166 | ||
167 | int | |
fba45db2 | 168 | core_addr_lessthan (CORE_ADDR lhs, CORE_ADDR rhs) |
3339cf8b AC |
169 | { |
170 | return (lhs < rhs); | |
171 | } | |
172 | ||
173 | int | |
fba45db2 | 174 | core_addr_greaterthan (CORE_ADDR lhs, CORE_ADDR rhs) |
3339cf8b AC |
175 | { |
176 | return (lhs > rhs); | |
177 | } | |
178 | ||
179 | ||
f0d4cc9e AC |
180 | /* Helper functions for TARGET_{FLOAT,DOUBLE}_FORMAT */ |
181 | ||
182 | const struct floatformat * | |
183 | default_float_format (struct gdbarch *gdbarch) | |
184 | { | |
185 | #if GDB_MULTI_ARCH | |
186 | int byte_order = gdbarch_byte_order (gdbarch); | |
187 | #else | |
188 | int byte_order = TARGET_BYTE_ORDER; | |
189 | #endif | |
190 | switch (byte_order) | |
191 | { | |
d7449b42 | 192 | case BFD_ENDIAN_BIG: |
f0d4cc9e | 193 | return &floatformat_ieee_single_big; |
778eb05e | 194 | case BFD_ENDIAN_LITTLE: |
f0d4cc9e AC |
195 | return &floatformat_ieee_single_little; |
196 | default: | |
8e65ff28 AC |
197 | internal_error (__FILE__, __LINE__, |
198 | "default_float_format: bad byte order"); | |
f0d4cc9e AC |
199 | } |
200 | } | |
201 | ||
202 | ||
203 | const struct floatformat * | |
204 | default_double_format (struct gdbarch *gdbarch) | |
205 | { | |
206 | #if GDB_MULTI_ARCH | |
207 | int byte_order = gdbarch_byte_order (gdbarch); | |
208 | #else | |
209 | int byte_order = TARGET_BYTE_ORDER; | |
210 | #endif | |
211 | switch (byte_order) | |
212 | { | |
d7449b42 | 213 | case BFD_ENDIAN_BIG: |
f0d4cc9e | 214 | return &floatformat_ieee_double_big; |
778eb05e | 215 | case BFD_ENDIAN_LITTLE: |
f0d4cc9e AC |
216 | return &floatformat_ieee_double_little; |
217 | default: | |
8e65ff28 AC |
218 | internal_error (__FILE__, __LINE__, |
219 | "default_double_format: bad byte order"); | |
f0d4cc9e AC |
220 | } |
221 | } | |
222 | ||
193e3b1a AC |
223 | /* Misc helper functions for targets. */ |
224 | ||
193e3b1a | 225 | int |
781a750d | 226 | deprecated_register_convertible_not (int num) |
193e3b1a AC |
227 | { |
228 | return 0; | |
229 | } | |
230 | ||
b4a20239 | 231 | |
c8f9d51c JB |
232 | /* Under some ABI's that specify the `struct convention' for returning |
233 | structures by value, by the time we've returned from the function, | |
234 | the return value is sitting there in the caller's buffer, but GDB | |
235 | has no way to find the address of that buffer. | |
236 | ||
237 | On such architectures, use this function as your | |
238 | extract_struct_value_address method. When asked to a struct | |
239 | returned by value in this fashion, GDB will print a nice error | |
240 | message, instead of garbage. */ | |
241 | CORE_ADDR | |
242 | generic_cannot_extract_struct_value_address (char *dummy) | |
243 | { | |
244 | return 0; | |
245 | } | |
246 | ||
f517ea4e | 247 | CORE_ADDR |
875e1767 | 248 | core_addr_identity (CORE_ADDR addr) |
f517ea4e PS |
249 | { |
250 | return addr; | |
251 | } | |
252 | ||
88c72b7d AC |
253 | int |
254 | no_op_reg_to_regnum (int reg) | |
255 | { | |
256 | return reg; | |
257 | } | |
258 | ||
97f46953 | 259 | CORE_ADDR |
10312cc4 AC |
260 | init_frame_pc_noop (int fromleaf, struct frame_info *prev) |
261 | { | |
97f46953 AC |
262 | /* Do nothing, implies return the same PC value. */ |
263 | return get_frame_pc (prev); | |
10312cc4 AC |
264 | } |
265 | ||
97f46953 | 266 | CORE_ADDR |
7824d2f2 AC |
267 | init_frame_pc_default (int fromleaf, struct frame_info *prev) |
268 | { | |
6913c89a AC |
269 | if (fromleaf && DEPRECATED_SAVED_PC_AFTER_CALL_P ()) |
270 | return DEPRECATED_SAVED_PC_AFTER_CALL (get_next_frame (prev)); | |
75e3c1f9 | 271 | else if (get_next_frame (prev) != NULL) |
8bedc050 | 272 | return DEPRECATED_FRAME_SAVED_PC (get_next_frame (prev)); |
7824d2f2 | 273 | else |
97f46953 | 274 | return read_pc (); |
7824d2f2 AC |
275 | } |
276 | ||
a2cf933a EZ |
277 | void |
278 | default_elf_make_msymbol_special (asymbol *sym, struct minimal_symbol *msym) | |
279 | { | |
280 | return; | |
281 | } | |
282 | ||
283 | void | |
284 | default_coff_make_msymbol_special (int val, struct minimal_symbol *msym) | |
285 | { | |
286 | return; | |
287 | } | |
288 | ||
01fb7433 AC |
289 | int |
290 | cannot_register_not (int regnum) | |
291 | { | |
292 | return 0; | |
293 | } | |
39d4ef09 AC |
294 | |
295 | /* Legacy version of target_virtual_frame_pointer(). Assumes that | |
0ba6dca9 AC |
296 | there is an DEPRECATED_FP_REGNUM and that it is the same, cooked or |
297 | raw. */ | |
39d4ef09 AC |
298 | |
299 | void | |
300 | legacy_virtual_frame_pointer (CORE_ADDR pc, | |
301 | int *frame_regnum, | |
302 | LONGEST *frame_offset) | |
303 | { | |
20bcf01c AC |
304 | /* FIXME: cagney/2002-09-13: This code is used when identifying the |
305 | frame pointer of the current PC. It is assuming that a single | |
306 | register and an offset can determine this. I think it should | |
307 | instead generate a byte code expression as that would work better | |
308 | with things like Dwarf2's CFI. */ | |
0ba6dca9 AC |
309 | if (DEPRECATED_FP_REGNUM >= 0 && DEPRECATED_FP_REGNUM < NUM_REGS) |
310 | *frame_regnum = DEPRECATED_FP_REGNUM; | |
20bcf01c AC |
311 | else if (SP_REGNUM >= 0 && SP_REGNUM < NUM_REGS) |
312 | *frame_regnum = SP_REGNUM; | |
313 | else | |
314 | /* Should this be an internal error? I guess so, it is reflecting | |
315 | an architectural limitation in the current design. */ | |
316 | internal_error (__FILE__, __LINE__, "No virtual frame pointer available"); | |
39d4ef09 AC |
317 | *frame_offset = 0; |
318 | } | |
46cd78fb | 319 | |
b2e75d78 AC |
320 | /* Assume the world is sane, every register's virtual and real size |
321 | is identical. */ | |
46cd78fb AC |
322 | |
323 | int | |
b2e75d78 | 324 | generic_register_size (int regnum) |
46cd78fb AC |
325 | { |
326 | gdb_assert (regnum >= 0 && regnum < NUM_REGS + NUM_PSEUDO_REGS); | |
35cac7cf AC |
327 | if (gdbarch_register_type_p (current_gdbarch)) |
328 | return TYPE_LENGTH (gdbarch_register_type (current_gdbarch, regnum)); | |
329 | else | |
330 | /* FIXME: cagney/2003-03-01: Once all architectures implement | |
331 | gdbarch_register_type(), this entire function can go away. It | |
332 | is made obsolete by register_size(). */ | |
333 | return TYPE_LENGTH (REGISTER_VIRTUAL_TYPE (regnum)); /* OK */ | |
ce29138a MS |
334 | } |
335 | ||
a7e3c2ad AC |
336 | /* Assume all registers are adjacent. */ |
337 | ||
338 | int | |
339 | generic_register_byte (int regnum) | |
340 | { | |
341 | int byte; | |
342 | int i; | |
343 | gdb_assert (regnum >= 0 && regnum < NUM_REGS + NUM_PSEUDO_REGS); | |
344 | byte = 0; | |
345 | for (i = 0; i < regnum; i++) | |
346 | { | |
0aa7e1aa | 347 | byte += generic_register_size (i); |
a7e3c2ad AC |
348 | } |
349 | return byte; | |
350 | } | |
351 | ||
d7bd68ca AC |
352 | \f |
353 | int | |
354 | legacy_pc_in_sigtramp (CORE_ADDR pc, char *name) | |
355 | { | |
db54fef4 CV |
356 | #if !defined (IN_SIGTRAMP) |
357 | if (SIGTRAMP_START_P ()) | |
358 | return (pc) >= SIGTRAMP_START (pc) && (pc) < SIGTRAMP_END (pc); | |
359 | else | |
360 | return name && strcmp ("_sigtramp", name) == 0; | |
361 | #else | |
362 | return IN_SIGTRAMP (pc, name); | |
363 | #endif | |
d7bd68ca AC |
364 | } |
365 | ||
13d01224 | 366 | int |
ff2e87ac | 367 | legacy_convert_register_p (int regnum, struct type *type) |
13d01224 | 368 | { |
781a750d | 369 | return DEPRECATED_REGISTER_CONVERTIBLE (regnum); |
13d01224 AC |
370 | } |
371 | ||
372 | void | |
ff2e87ac AC |
373 | legacy_register_to_value (struct frame_info *frame, int regnum, |
374 | struct type *type, void *to) | |
13d01224 | 375 | { |
ff2e87ac AC |
376 | char from[MAX_REGISTER_SIZE]; |
377 | frame_read_register (frame, regnum, from); | |
781a750d | 378 | DEPRECATED_REGISTER_CONVERT_TO_VIRTUAL (regnum, type, from, to); |
13d01224 AC |
379 | } |
380 | ||
381 | void | |
ff2e87ac AC |
382 | legacy_value_to_register (struct frame_info *frame, int regnum, |
383 | struct type *type, const void *tmp) | |
13d01224 | 384 | { |
ff2e87ac AC |
385 | char to[MAX_REGISTER_SIZE]; |
386 | char *from = alloca (TYPE_LENGTH (type)); | |
387 | memcpy (from, from, TYPE_LENGTH (type)); | |
781a750d | 388 | DEPRECATED_REGISTER_CONVERT_TO_RAW (type, regnum, from, to); |
ff2e87ac | 389 | put_frame_register (frame, regnum, to); |
13d01224 AC |
390 | } |
391 | ||
01fb7433 | 392 | \f |
b4a20239 AC |
393 | /* Functions to manipulate the endianness of the target. */ |
394 | ||
1ba607ad | 395 | /* ``target_byte_order'' is only used when non- multi-arch. |
afe64c1a AC |
396 | Multi-arch targets obtain the current byte order using the |
397 | TARGET_BYTE_ORDER gdbarch method. | |
398 | ||
399 | The choice of initial value is entirely arbitrary. During startup, | |
400 | the function initialize_current_architecture() updates this value | |
401 | based on default byte-order information extracted from BFD. */ | |
402 | int target_byte_order = BFD_ENDIAN_BIG; | |
b4a20239 AC |
403 | int target_byte_order_auto = 1; |
404 | ||
53904c9e AC |
405 | static const char endian_big[] = "big"; |
406 | static const char endian_little[] = "little"; | |
407 | static const char endian_auto[] = "auto"; | |
408 | static const char *endian_enum[] = | |
b4a20239 AC |
409 | { |
410 | endian_big, | |
411 | endian_little, | |
412 | endian_auto, | |
413 | NULL, | |
414 | }; | |
53904c9e | 415 | static const char *set_endian_string; |
b4a20239 AC |
416 | |
417 | /* Called by ``show endian''. */ | |
418 | ||
419 | static void | |
420 | show_endian (char *args, int from_tty) | |
421 | { | |
422 | if (TARGET_BYTE_ORDER_AUTO) | |
423 | printf_unfiltered ("The target endianness is set automatically (currently %s endian)\n", | |
d7449b42 | 424 | (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG ? "big" : "little")); |
b4a20239 AC |
425 | else |
426 | printf_unfiltered ("The target is assumed to be %s endian\n", | |
d7449b42 | 427 | (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG ? "big" : "little")); |
b4a20239 AC |
428 | } |
429 | ||
430 | static void | |
431 | set_endian (char *ignore_args, int from_tty, struct cmd_list_element *c) | |
432 | { | |
3fd3d7d2 | 433 | if (set_endian_string == endian_auto) |
b4a20239 AC |
434 | { |
435 | target_byte_order_auto = 1; | |
436 | } | |
437 | else if (set_endian_string == endian_little) | |
438 | { | |
b4a20239 AC |
439 | target_byte_order_auto = 0; |
440 | if (GDB_MULTI_ARCH) | |
441 | { | |
442 | struct gdbarch_info info; | |
fb6ecb0f | 443 | gdbarch_info_init (&info); |
778eb05e | 444 | info.byte_order = BFD_ENDIAN_LITTLE; |
16f33e29 AC |
445 | if (! gdbarch_update_p (info)) |
446 | { | |
447 | printf_unfiltered ("Little endian target not supported by GDB\n"); | |
448 | } | |
b4a20239 | 449 | } |
1ba607ad AC |
450 | else |
451 | { | |
778eb05e | 452 | target_byte_order = BFD_ENDIAN_LITTLE; |
1ba607ad | 453 | } |
b4a20239 AC |
454 | } |
455 | else if (set_endian_string == endian_big) | |
456 | { | |
b4a20239 AC |
457 | target_byte_order_auto = 0; |
458 | if (GDB_MULTI_ARCH) | |
459 | { | |
460 | struct gdbarch_info info; | |
fb6ecb0f | 461 | gdbarch_info_init (&info); |
d7449b42 | 462 | info.byte_order = BFD_ENDIAN_BIG; |
16f33e29 AC |
463 | if (! gdbarch_update_p (info)) |
464 | { | |
465 | printf_unfiltered ("Big endian target not supported by GDB\n"); | |
466 | } | |
b4a20239 | 467 | } |
1ba607ad AC |
468 | else |
469 | { | |
d7449b42 | 470 | target_byte_order = BFD_ENDIAN_BIG; |
1ba607ad | 471 | } |
b4a20239 AC |
472 | } |
473 | else | |
8e65ff28 AC |
474 | internal_error (__FILE__, __LINE__, |
475 | "set_endian: bad value"); | |
b4a20239 AC |
476 | show_endian (NULL, from_tty); |
477 | } | |
478 | ||
479 | /* Set the endianness from a BFD. */ | |
480 | ||
481 | static void | |
482 | set_endian_from_file (bfd *abfd) | |
483 | { | |
3fd3d7d2 | 484 | int want; |
1ba607ad | 485 | if (GDB_MULTI_ARCH) |
8e65ff28 AC |
486 | internal_error (__FILE__, __LINE__, |
487 | "set_endian_from_file: not for multi-arch"); | |
3fd3d7d2 AC |
488 | if (bfd_big_endian (abfd)) |
489 | want = BFD_ENDIAN_BIG; | |
b4a20239 | 490 | else |
3fd3d7d2 AC |
491 | want = BFD_ENDIAN_LITTLE; |
492 | if (TARGET_BYTE_ORDER_AUTO) | |
493 | target_byte_order = want; | |
494 | else if (TARGET_BYTE_ORDER != want) | |
495 | warning ("%s endian file does not match %s endian target.", | |
496 | want == BFD_ENDIAN_BIG ? "big" : "little", | |
497 | TARGET_BYTE_ORDER == BFD_ENDIAN_BIG ? "big" : "little"); | |
b4a20239 AC |
498 | } |
499 | ||
500 | ||
501 | /* Functions to manipulate the architecture of the target */ | |
502 | ||
503 | enum set_arch { set_arch_auto, set_arch_manual }; | |
504 | ||
505 | int target_architecture_auto = 1; | |
506 | ||
53904c9e | 507 | const char *set_architecture_string; |
b4a20239 AC |
508 | |
509 | /* Old way of changing the current architecture. */ | |
510 | ||
511 | extern const struct bfd_arch_info bfd_default_arch_struct; | |
512 | const struct bfd_arch_info *target_architecture = &bfd_default_arch_struct; | |
513 | int (*target_architecture_hook) (const struct bfd_arch_info *ap); | |
514 | ||
515 | static int | |
516 | arch_ok (const struct bfd_arch_info *arch) | |
517 | { | |
518 | if (GDB_MULTI_ARCH) | |
8e65ff28 AC |
519 | internal_error (__FILE__, __LINE__, |
520 | "arch_ok: not multi-arched"); | |
b4a20239 AC |
521 | /* Should be performing the more basic check that the binary is |
522 | compatible with GDB. */ | |
523 | /* Check with the target that the architecture is valid. */ | |
524 | return (target_architecture_hook == NULL | |
525 | || target_architecture_hook (arch)); | |
526 | } | |
527 | ||
528 | static void | |
529 | set_arch (const struct bfd_arch_info *arch, | |
530 | enum set_arch type) | |
531 | { | |
532 | if (GDB_MULTI_ARCH) | |
8e65ff28 AC |
533 | internal_error (__FILE__, __LINE__, |
534 | "set_arch: not multi-arched"); | |
b4a20239 AC |
535 | switch (type) |
536 | { | |
537 | case set_arch_auto: | |
538 | if (!arch_ok (arch)) | |
539 | warning ("Target may not support %s architecture", | |
540 | arch->printable_name); | |
541 | target_architecture = arch; | |
542 | break; | |
543 | case set_arch_manual: | |
544 | if (!arch_ok (arch)) | |
545 | { | |
546 | printf_unfiltered ("Target does not support `%s' architecture.\n", | |
547 | arch->printable_name); | |
548 | } | |
549 | else | |
550 | { | |
551 | target_architecture_auto = 0; | |
552 | target_architecture = arch; | |
553 | } | |
554 | break; | |
555 | } | |
556 | if (gdbarch_debug) | |
4b9b3959 | 557 | gdbarch_dump (current_gdbarch, gdb_stdlog); |
b4a20239 AC |
558 | } |
559 | ||
560 | /* Set the architecture from arch/machine (deprecated) */ | |
561 | ||
562 | void | |
563 | set_architecture_from_arch_mach (enum bfd_architecture arch, | |
564 | unsigned long mach) | |
565 | { | |
566 | const struct bfd_arch_info *wanted = bfd_lookup_arch (arch, mach); | |
567 | if (GDB_MULTI_ARCH) | |
8e65ff28 AC |
568 | internal_error (__FILE__, __LINE__, |
569 | "set_architecture_from_arch_mach: not multi-arched"); | |
b4a20239 AC |
570 | if (wanted != NULL) |
571 | set_arch (wanted, set_arch_manual); | |
572 | else | |
8e65ff28 AC |
573 | internal_error (__FILE__, __LINE__, |
574 | "gdbarch: hardwired architecture/machine not recognized"); | |
b4a20239 AC |
575 | } |
576 | ||
577 | /* Set the architecture from a BFD (deprecated) */ | |
578 | ||
579 | static void | |
580 | set_architecture_from_file (bfd *abfd) | |
581 | { | |
582 | const struct bfd_arch_info *wanted = bfd_get_arch_info (abfd); | |
583 | if (GDB_MULTI_ARCH) | |
8e65ff28 AC |
584 | internal_error (__FILE__, __LINE__, |
585 | "set_architecture_from_file: not multi-arched"); | |
b4a20239 AC |
586 | if (target_architecture_auto) |
587 | { | |
588 | set_arch (wanted, set_arch_auto); | |
589 | } | |
590 | else if (wanted != target_architecture) | |
591 | { | |
592 | warning ("%s architecture file may be incompatible with %s target.", | |
593 | wanted->printable_name, | |
594 | target_architecture->printable_name); | |
595 | } | |
596 | } | |
597 | ||
598 | ||
599 | /* Called if the user enters ``show architecture'' without an | |
600 | argument. */ | |
601 | ||
602 | static void | |
603 | show_architecture (char *args, int from_tty) | |
604 | { | |
605 | const char *arch; | |
606 | arch = TARGET_ARCHITECTURE->printable_name; | |
607 | if (target_architecture_auto) | |
608 | printf_filtered ("The target architecture is set automatically (currently %s)\n", arch); | |
609 | else | |
610 | printf_filtered ("The target architecture is assumed to be %s\n", arch); | |
611 | } | |
612 | ||
613 | ||
614 | /* Called if the user enters ``set architecture'' with or without an | |
615 | argument. */ | |
616 | ||
617 | static void | |
618 | set_architecture (char *ignore_args, int from_tty, struct cmd_list_element *c) | |
619 | { | |
620 | if (strcmp (set_architecture_string, "auto") == 0) | |
621 | { | |
622 | target_architecture_auto = 1; | |
623 | } | |
624 | else if (GDB_MULTI_ARCH) | |
625 | { | |
626 | struct gdbarch_info info; | |
fb6ecb0f | 627 | gdbarch_info_init (&info); |
b4a20239 AC |
628 | info.bfd_arch_info = bfd_scan_arch (set_architecture_string); |
629 | if (info.bfd_arch_info == NULL) | |
8e65ff28 AC |
630 | internal_error (__FILE__, __LINE__, |
631 | "set_architecture: bfd_scan_arch failed"); | |
16f33e29 | 632 | if (gdbarch_update_p (info)) |
b4a20239 AC |
633 | target_architecture_auto = 0; |
634 | else | |
ec3d358c | 635 | printf_unfiltered ("Architecture `%s' not recognized.\n", |
b4a20239 AC |
636 | set_architecture_string); |
637 | } | |
638 | else | |
639 | { | |
640 | const struct bfd_arch_info *arch | |
641 | = bfd_scan_arch (set_architecture_string); | |
642 | if (arch == NULL) | |
8e65ff28 AC |
643 | internal_error (__FILE__, __LINE__, |
644 | "set_architecture: bfd_scan_arch failed"); | |
b4a20239 AC |
645 | set_arch (arch, set_arch_manual); |
646 | } | |
647 | show_architecture (NULL, from_tty); | |
648 | } | |
649 | ||
b7d6b182 | 650 | /* Set the dynamic target-system-dependent parameters (architecture, |
b4a20239 AC |
651 | byte-order) using information found in the BFD */ |
652 | ||
653 | void | |
fba45db2 | 654 | set_gdbarch_from_file (bfd *abfd) |
b4a20239 AC |
655 | { |
656 | if (GDB_MULTI_ARCH) | |
657 | { | |
658 | struct gdbarch_info info; | |
fb6ecb0f | 659 | gdbarch_info_init (&info); |
b4a20239 | 660 | info.abfd = abfd; |
16f33e29 | 661 | if (! gdbarch_update_p (info)) |
ec3d358c | 662 | error ("Architecture of file not recognized.\n"); |
b4a20239 AC |
663 | } |
664 | else | |
665 | { | |
666 | set_architecture_from_file (abfd); | |
667 | set_endian_from_file (abfd); | |
668 | } | |
669 | } | |
670 | ||
671 | /* Initialize the current architecture. Update the ``set | |
672 | architecture'' command so that it specifies a list of valid | |
673 | architectures. */ | |
674 | ||
1ba607ad AC |
675 | #ifdef DEFAULT_BFD_ARCH |
676 | extern const bfd_arch_info_type DEFAULT_BFD_ARCH; | |
677 | static const bfd_arch_info_type *default_bfd_arch = &DEFAULT_BFD_ARCH; | |
678 | #else | |
4b9b3959 | 679 | static const bfd_arch_info_type *default_bfd_arch; |
1ba607ad AC |
680 | #endif |
681 | ||
682 | #ifdef DEFAULT_BFD_VEC | |
683 | extern const bfd_target DEFAULT_BFD_VEC; | |
684 | static const bfd_target *default_bfd_vec = &DEFAULT_BFD_VEC; | |
685 | #else | |
686 | static const bfd_target *default_bfd_vec; | |
687 | #endif | |
688 | ||
b4a20239 AC |
689 | void |
690 | initialize_current_architecture (void) | |
691 | { | |
692 | const char **arches = gdbarch_printable_names (); | |
b4a20239 | 693 | |
1ba607ad AC |
694 | /* determine a default architecture and byte order. */ |
695 | struct gdbarch_info info; | |
fb6ecb0f | 696 | gdbarch_info_init (&info); |
1ba607ad AC |
697 | |
698 | /* Find a default architecture. */ | |
699 | if (info.bfd_arch_info == NULL | |
700 | && default_bfd_arch != NULL) | |
701 | info.bfd_arch_info = default_bfd_arch; | |
702 | if (info.bfd_arch_info == NULL) | |
b4a20239 | 703 | { |
1ba607ad AC |
704 | /* Choose the architecture by taking the first one |
705 | alphabetically. */ | |
706 | const char *chosen = arches[0]; | |
b4a20239 | 707 | const char **arch; |
b4a20239 AC |
708 | for (arch = arches; *arch != NULL; arch++) |
709 | { | |
b4a20239 AC |
710 | if (strcmp (*arch, chosen) < 0) |
711 | chosen = *arch; | |
712 | } | |
713 | if (chosen == NULL) | |
8e65ff28 AC |
714 | internal_error (__FILE__, __LINE__, |
715 | "initialize_current_architecture: No arch"); | |
b4a20239 AC |
716 | info.bfd_arch_info = bfd_scan_arch (chosen); |
717 | if (info.bfd_arch_info == NULL) | |
8e65ff28 AC |
718 | internal_error (__FILE__, __LINE__, |
719 | "initialize_current_architecture: Arch not found"); | |
1ba607ad AC |
720 | } |
721 | ||
afe64c1a | 722 | /* Take several guesses at a byte order. */ |
428721aa | 723 | if (info.byte_order == BFD_ENDIAN_UNKNOWN |
1ba607ad AC |
724 | && default_bfd_vec != NULL) |
725 | { | |
726 | /* Extract BFD's default vector's byte order. */ | |
727 | switch (default_bfd_vec->byteorder) | |
728 | { | |
729 | case BFD_ENDIAN_BIG: | |
d7449b42 | 730 | info.byte_order = BFD_ENDIAN_BIG; |
1ba607ad AC |
731 | break; |
732 | case BFD_ENDIAN_LITTLE: | |
778eb05e | 733 | info.byte_order = BFD_ENDIAN_LITTLE; |
1ba607ad AC |
734 | break; |
735 | default: | |
736 | break; | |
737 | } | |
738 | } | |
428721aa | 739 | if (info.byte_order == BFD_ENDIAN_UNKNOWN) |
1ba607ad AC |
740 | { |
741 | /* look for ``*el-*'' in the target name. */ | |
742 | const char *chp; | |
743 | chp = strchr (target_name, '-'); | |
744 | if (chp != NULL | |
745 | && chp - 2 >= target_name | |
746 | && strncmp (chp - 2, "el", 2) == 0) | |
778eb05e | 747 | info.byte_order = BFD_ENDIAN_LITTLE; |
1ba607ad | 748 | } |
428721aa | 749 | if (info.byte_order == BFD_ENDIAN_UNKNOWN) |
1ba607ad AC |
750 | { |
751 | /* Wire it to big-endian!!! */ | |
d7449b42 | 752 | info.byte_order = BFD_ENDIAN_BIG; |
1ba607ad AC |
753 | } |
754 | ||
755 | if (GDB_MULTI_ARCH) | |
756 | { | |
16f33e29 AC |
757 | if (! gdbarch_update_p (info)) |
758 | { | |
8e65ff28 AC |
759 | internal_error (__FILE__, __LINE__, |
760 | "initialize_current_architecture: Selection of initial architecture failed"); | |
16f33e29 | 761 | } |
b4a20239 | 762 | } |
ceaa8edf | 763 | else |
afe64c1a AC |
764 | { |
765 | /* If the multi-arch logic comes up with a byte-order (from BFD) | |
766 | use it for the non-multi-arch case. */ | |
767 | if (info.byte_order != BFD_ENDIAN_UNKNOWN) | |
768 | target_byte_order = info.byte_order; | |
769 | initialize_non_multiarch (); | |
770 | } | |
b4a20239 | 771 | |
1ba607ad AC |
772 | /* Create the ``set architecture'' command appending ``auto'' to the |
773 | list of architectures. */ | |
b4a20239 AC |
774 | { |
775 | struct cmd_list_element *c; | |
776 | /* Append ``auto''. */ | |
777 | int nr; | |
778 | for (nr = 0; arches[nr] != NULL; nr++); | |
779 | arches = xrealloc (arches, sizeof (char*) * (nr + 2)); | |
780 | arches[nr + 0] = "auto"; | |
781 | arches[nr + 1] = NULL; | |
782 | /* FIXME: add_set_enum_cmd() uses an array of ``char *'' instead | |
783 | of ``const char *''. We just happen to know that the casts are | |
784 | safe. */ | |
785 | c = add_set_enum_cmd ("architecture", class_support, | |
53904c9e | 786 | arches, &set_architecture_string, |
b4a20239 AC |
787 | "Set architecture of target.", |
788 | &setlist); | |
9f60d481 | 789 | set_cmd_sfunc (c, set_architecture); |
b4a20239 AC |
790 | add_alias_cmd ("processor", "architecture", class_support, 1, &setlist); |
791 | /* Don't use set_from_show - need to print both auto/manual and | |
792 | current setting. */ | |
793 | add_cmd ("architecture", class_support, show_architecture, | |
794 | "Show the current target architecture", &showlist); | |
b4a20239 AC |
795 | } |
796 | } | |
797 | ||
798 | ||
fb6ecb0f AC |
799 | /* Initialize a gdbarch info to values that will be automatically |
800 | overridden. Note: Originally, this ``struct info'' was initialized | |
801 | using memset(0). Unfortunatly, that ran into problems, namely | |
802 | BFD_ENDIAN_BIG is zero. An explicit initialization function that | |
803 | can explicitly set each field to a well defined value is used. */ | |
804 | ||
805 | void | |
806 | gdbarch_info_init (struct gdbarch_info *info) | |
807 | { | |
808 | memset (info, 0, sizeof (struct gdbarch_info)); | |
428721aa | 809 | info->byte_order = BFD_ENDIAN_UNKNOWN; |
4be87837 | 810 | info->osabi = GDB_OSABI_UNINITIALIZED; |
fb6ecb0f AC |
811 | } |
812 | ||
c0e8c252 AC |
813 | /* */ |
814 | ||
a78f21af | 815 | extern initialize_file_ftype _initialize_gdbarch_utils; /* -Wmissing-prototypes */ |
c0e8c252 AC |
816 | |
817 | void | |
b4a20239 | 818 | _initialize_gdbarch_utils (void) |
c0e8c252 | 819 | { |
b4a20239 AC |
820 | struct cmd_list_element *c; |
821 | c = add_set_enum_cmd ("endian", class_support, | |
822 | endian_enum, &set_endian_string, | |
823 | "Set endianness of target.", | |
824 | &setlist); | |
9f60d481 | 825 | set_cmd_sfunc (c, set_endian); |
b4a20239 AC |
826 | /* Don't use set_from_show - need to print both auto/manual and |
827 | current setting. */ | |
828 | add_cmd ("endian", class_support, show_endian, | |
829 | "Show the current byte-order", &showlist); | |
c0e8c252 | 830 | } |