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 | ||
fb6ecb0f | 25 | #include "arch-utils.h" |
192cb3d4 | 26 | #include "buildsym.h" |
c0e8c252 AC |
27 | #include "gdbcmd.h" |
28 | #include "inferior.h" /* enum CALL_DUMMY_LOCATION et.al. */ | |
5f8a3188 | 29 | #include "gdb_string.h" |
fbec36e2 | 30 | #include "regcache.h" |
39d4ef09 | 31 | #include "gdb_assert.h" |
4182591f | 32 | #include "sim-regno.h" |
c0e8c252 | 33 | |
bf922ad9 AC |
34 | #include "osabi.h" |
35 | ||
1ba607ad AC |
36 | #include "version.h" |
37 | ||
f0d4cc9e AC |
38 | #include "floatformat.h" |
39 | ||
049ee0e4 AC |
40 | /* Implementation of extract return value that grubs around in the |
41 | register cache. */ | |
42 | void | |
43 | legacy_extract_return_value (struct type *type, struct regcache *regcache, | |
ebba8386 | 44 | void *valbuf) |
049ee0e4 AC |
45 | { |
46 | char *registers = deprecated_grub_regcache_for_registers (regcache); | |
ebba8386 | 47 | bfd_byte *buf = valbuf; |
524d7c18 | 48 | DEPRECATED_EXTRACT_RETURN_VALUE (type, registers, buf); /* OK */ |
049ee0e4 AC |
49 | } |
50 | ||
ebba8386 AC |
51 | /* Implementation of store return value that grubs the register cache. |
52 | Takes a local copy of the buffer to avoid const problems. */ | |
53 | void | |
54 | legacy_store_return_value (struct type *type, struct regcache *regcache, | |
55 | const void *buf) | |
56 | { | |
57 | bfd_byte *b = alloca (TYPE_LENGTH (type)); | |
58 | gdb_assert (regcache == current_regcache); | |
59 | memcpy (b, buf, TYPE_LENGTH (type)); | |
60 | DEPRECATED_STORE_RETURN_VALUE (type, b); | |
61 | } | |
62 | ||
63 | ||
1fd35568 JB |
64 | int |
65 | always_use_struct_convention (int gcc_p, struct type *value_type) | |
66 | { | |
67 | return 1; | |
68 | } | |
69 | ||
70 | ||
4182591f AC |
71 | int |
72 | legacy_register_sim_regno (int regnum) | |
73 | { | |
74 | /* Only makes sense to supply raw registers. */ | |
75 | gdb_assert (regnum >= 0 && regnum < NUM_REGS); | |
76 | /* NOTE: cagney/2002-05-13: The old code did it this way and it is | |
77 | suspected that some GDB/SIM combinations may rely on this | |
78 | behavour. The default should be one2one_register_sim_regno | |
79 | (below). */ | |
80 | if (REGISTER_NAME (regnum) != NULL | |
81 | && REGISTER_NAME (regnum)[0] != '\0') | |
82 | return regnum; | |
83 | else | |
84 | return LEGACY_SIM_REGNO_IGNORE; | |
85 | } | |
86 | ||
c0e8c252 AC |
87 | int |
88 | generic_frameless_function_invocation_not (struct frame_info *fi) | |
89 | { | |
90 | return 0; | |
91 | } | |
92 | ||
71a9f22e JB |
93 | int |
94 | generic_return_value_on_stack_not (struct type *type) | |
95 | { | |
96 | return 0; | |
97 | } | |
98 | ||
bdcd319a CV |
99 | CORE_ADDR |
100 | generic_skip_trampoline_code (CORE_ADDR pc) | |
101 | { | |
102 | return 0; | |
103 | } | |
104 | ||
dea0c52f | 105 | CORE_ADDR |
4c8c40e6 | 106 | generic_skip_solib_resolver (struct gdbarch *gdbarch, CORE_ADDR pc) |
dea0c52f MK |
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 | ||
d50355b6 MS |
117 | int |
118 | generic_in_solib_return_trampoline (CORE_ADDR pc, char *name) | |
119 | { | |
120 | return 0; | |
121 | } | |
122 | ||
c12260ac CV |
123 | int |
124 | generic_in_function_epilogue_p (struct gdbarch *gdbarch, CORE_ADDR pc) | |
125 | { | |
126 | return 0; | |
127 | } | |
128 | ||
c0e8c252 AC |
129 | #if defined (CALL_DUMMY) |
130 | LONGEST legacy_call_dummy_words[] = CALL_DUMMY; | |
131 | #else | |
132 | LONGEST legacy_call_dummy_words[1]; | |
133 | #endif | |
134 | int legacy_sizeof_call_dummy_words = sizeof (legacy_call_dummy_words); | |
135 | ||
136 | void | |
f6684c31 AC |
137 | generic_remote_translate_xfer_address (struct gdbarch *gdbarch, |
138 | struct regcache *regcache, | |
139 | CORE_ADDR gdb_addr, int gdb_len, | |
c0e8c252 AC |
140 | CORE_ADDR * rem_addr, int *rem_len) |
141 | { | |
142 | *rem_addr = gdb_addr; | |
143 | *rem_len = gdb_len; | |
144 | } | |
145 | ||
dad41f9a AC |
146 | int |
147 | generic_prologue_frameless_p (CORE_ADDR ip) | |
148 | { | |
dad41f9a | 149 | return ip == SKIP_PROLOGUE (ip); |
dad41f9a AC |
150 | } |
151 | ||
3339cf8b AC |
152 | /* Helper functions for INNER_THAN */ |
153 | ||
154 | int | |
fba45db2 | 155 | core_addr_lessthan (CORE_ADDR lhs, CORE_ADDR rhs) |
3339cf8b AC |
156 | { |
157 | return (lhs < rhs); | |
158 | } | |
159 | ||
160 | int | |
fba45db2 | 161 | core_addr_greaterthan (CORE_ADDR lhs, CORE_ADDR rhs) |
3339cf8b AC |
162 | { |
163 | return (lhs > rhs); | |
164 | } | |
165 | ||
166 | ||
f0d4cc9e AC |
167 | /* Helper functions for TARGET_{FLOAT,DOUBLE}_FORMAT */ |
168 | ||
169 | const struct floatformat * | |
170 | default_float_format (struct gdbarch *gdbarch) | |
171 | { | |
f0d4cc9e | 172 | int byte_order = gdbarch_byte_order (gdbarch); |
f0d4cc9e AC |
173 | switch (byte_order) |
174 | { | |
d7449b42 | 175 | case BFD_ENDIAN_BIG: |
f0d4cc9e | 176 | return &floatformat_ieee_single_big; |
778eb05e | 177 | case BFD_ENDIAN_LITTLE: |
f0d4cc9e AC |
178 | return &floatformat_ieee_single_little; |
179 | default: | |
8e65ff28 AC |
180 | internal_error (__FILE__, __LINE__, |
181 | "default_float_format: bad byte order"); | |
f0d4cc9e AC |
182 | } |
183 | } | |
184 | ||
185 | ||
186 | const struct floatformat * | |
187 | default_double_format (struct gdbarch *gdbarch) | |
188 | { | |
f0d4cc9e | 189 | int byte_order = gdbarch_byte_order (gdbarch); |
f0d4cc9e AC |
190 | switch (byte_order) |
191 | { | |
d7449b42 | 192 | case BFD_ENDIAN_BIG: |
f0d4cc9e | 193 | return &floatformat_ieee_double_big; |
778eb05e | 194 | case BFD_ENDIAN_LITTLE: |
f0d4cc9e AC |
195 | return &floatformat_ieee_double_little; |
196 | default: | |
8e65ff28 AC |
197 | internal_error (__FILE__, __LINE__, |
198 | "default_double_format: bad byte order"); | |
f0d4cc9e AC |
199 | } |
200 | } | |
201 | ||
193e3b1a AC |
202 | /* Misc helper functions for targets. */ |
203 | ||
193e3b1a | 204 | int |
781a750d | 205 | deprecated_register_convertible_not (int num) |
193e3b1a AC |
206 | { |
207 | return 0; | |
208 | } | |
209 | ||
b4a20239 | 210 | |
f517ea4e | 211 | CORE_ADDR |
875e1767 | 212 | core_addr_identity (CORE_ADDR addr) |
f517ea4e PS |
213 | { |
214 | return addr; | |
215 | } | |
216 | ||
e2d0e7eb AC |
217 | CORE_ADDR |
218 | convert_from_func_ptr_addr_identity (struct gdbarch *gdbarch, CORE_ADDR addr, | |
219 | struct target_ops *targ) | |
220 | { | |
221 | return addr; | |
222 | } | |
223 | ||
88c72b7d AC |
224 | int |
225 | no_op_reg_to_regnum (int reg) | |
226 | { | |
227 | return reg; | |
228 | } | |
229 | ||
97f46953 | 230 | CORE_ADDR |
0968aa8c | 231 | deprecated_init_frame_pc_default (int fromleaf, struct frame_info *prev) |
7824d2f2 | 232 | { |
6913c89a AC |
233 | if (fromleaf && DEPRECATED_SAVED_PC_AFTER_CALL_P ()) |
234 | return DEPRECATED_SAVED_PC_AFTER_CALL (get_next_frame (prev)); | |
75e3c1f9 | 235 | else if (get_next_frame (prev) != NULL) |
8bedc050 | 236 | return DEPRECATED_FRAME_SAVED_PC (get_next_frame (prev)); |
7824d2f2 | 237 | else |
97f46953 | 238 | return read_pc (); |
7824d2f2 AC |
239 | } |
240 | ||
a2cf933a EZ |
241 | void |
242 | default_elf_make_msymbol_special (asymbol *sym, struct minimal_symbol *msym) | |
243 | { | |
244 | return; | |
245 | } | |
246 | ||
247 | void | |
248 | default_coff_make_msymbol_special (int val, struct minimal_symbol *msym) | |
249 | { | |
250 | return; | |
251 | } | |
252 | ||
01fb7433 AC |
253 | int |
254 | cannot_register_not (int regnum) | |
255 | { | |
256 | return 0; | |
257 | } | |
39d4ef09 AC |
258 | |
259 | /* Legacy version of target_virtual_frame_pointer(). Assumes that | |
0ba6dca9 AC |
260 | there is an DEPRECATED_FP_REGNUM and that it is the same, cooked or |
261 | raw. */ | |
39d4ef09 AC |
262 | |
263 | void | |
264 | legacy_virtual_frame_pointer (CORE_ADDR pc, | |
265 | int *frame_regnum, | |
266 | LONGEST *frame_offset) | |
267 | { | |
20bcf01c AC |
268 | /* FIXME: cagney/2002-09-13: This code is used when identifying the |
269 | frame pointer of the current PC. It is assuming that a single | |
270 | register and an offset can determine this. I think it should | |
271 | instead generate a byte code expression as that would work better | |
272 | with things like Dwarf2's CFI. */ | |
0ba6dca9 AC |
273 | if (DEPRECATED_FP_REGNUM >= 0 && DEPRECATED_FP_REGNUM < NUM_REGS) |
274 | *frame_regnum = DEPRECATED_FP_REGNUM; | |
20bcf01c AC |
275 | else if (SP_REGNUM >= 0 && SP_REGNUM < NUM_REGS) |
276 | *frame_regnum = SP_REGNUM; | |
277 | else | |
278 | /* Should this be an internal error? I guess so, it is reflecting | |
279 | an architectural limitation in the current design. */ | |
280 | internal_error (__FILE__, __LINE__, "No virtual frame pointer available"); | |
39d4ef09 AC |
281 | *frame_offset = 0; |
282 | } | |
46cd78fb | 283 | |
b2e75d78 AC |
284 | /* Assume the world is sane, every register's virtual and real size |
285 | is identical. */ | |
46cd78fb AC |
286 | |
287 | int | |
b2e75d78 | 288 | generic_register_size (int regnum) |
46cd78fb AC |
289 | { |
290 | gdb_assert (regnum >= 0 && regnum < NUM_REGS + NUM_PSEUDO_REGS); | |
35cac7cf AC |
291 | if (gdbarch_register_type_p (current_gdbarch)) |
292 | return TYPE_LENGTH (gdbarch_register_type (current_gdbarch, regnum)); | |
293 | else | |
294 | /* FIXME: cagney/2003-03-01: Once all architectures implement | |
295 | gdbarch_register_type(), this entire function can go away. It | |
296 | is made obsolete by register_size(). */ | |
2e092625 | 297 | return TYPE_LENGTH (DEPRECATED_REGISTER_VIRTUAL_TYPE (regnum)); /* OK */ |
ce29138a MS |
298 | } |
299 | ||
a7e3c2ad AC |
300 | /* Assume all registers are adjacent. */ |
301 | ||
302 | int | |
303 | generic_register_byte (int regnum) | |
304 | { | |
305 | int byte; | |
306 | int i; | |
307 | gdb_assert (regnum >= 0 && regnum < NUM_REGS + NUM_PSEUDO_REGS); | |
308 | byte = 0; | |
309 | for (i = 0; i < regnum; i++) | |
310 | { | |
0aa7e1aa | 311 | byte += generic_register_size (i); |
a7e3c2ad AC |
312 | } |
313 | return byte; | |
314 | } | |
315 | ||
d7bd68ca AC |
316 | \f |
317 | int | |
318 | legacy_pc_in_sigtramp (CORE_ADDR pc, char *name) | |
319 | { | |
db54fef4 CV |
320 | #if !defined (IN_SIGTRAMP) |
321 | if (SIGTRAMP_START_P ()) | |
322 | return (pc) >= SIGTRAMP_START (pc) && (pc) < SIGTRAMP_END (pc); | |
323 | else | |
324 | return name && strcmp ("_sigtramp", name) == 0; | |
325 | #else | |
326 | return IN_SIGTRAMP (pc, name); | |
327 | #endif | |
d7bd68ca AC |
328 | } |
329 | ||
13d01224 | 330 | int |
ff2e87ac | 331 | legacy_convert_register_p (int regnum, struct type *type) |
13d01224 | 332 | { |
781a750d | 333 | return DEPRECATED_REGISTER_CONVERTIBLE (regnum); |
13d01224 AC |
334 | } |
335 | ||
336 | void | |
ff2e87ac AC |
337 | legacy_register_to_value (struct frame_info *frame, int regnum, |
338 | struct type *type, void *to) | |
13d01224 | 339 | { |
ff2e87ac | 340 | char from[MAX_REGISTER_SIZE]; |
7f5f525d | 341 | get_frame_register (frame, regnum, from); |
781a750d | 342 | DEPRECATED_REGISTER_CONVERT_TO_VIRTUAL (regnum, type, from, to); |
13d01224 AC |
343 | } |
344 | ||
345 | void | |
ff2e87ac AC |
346 | legacy_value_to_register (struct frame_info *frame, int regnum, |
347 | struct type *type, const void *tmp) | |
13d01224 | 348 | { |
ff2e87ac AC |
349 | char to[MAX_REGISTER_SIZE]; |
350 | char *from = alloca (TYPE_LENGTH (type)); | |
351 | memcpy (from, from, TYPE_LENGTH (type)); | |
781a750d | 352 | DEPRECATED_REGISTER_CONVERT_TO_RAW (type, regnum, from, to); |
ff2e87ac | 353 | put_frame_register (frame, regnum, to); |
13d01224 AC |
354 | } |
355 | ||
192cb3d4 MK |
356 | int |
357 | default_stabs_argument_has_addr (struct gdbarch *gdbarch, struct type *type) | |
358 | { | |
359 | if (DEPRECATED_REG_STRUCT_HAS_ADDR_P () | |
360 | && DEPRECATED_REG_STRUCT_HAS_ADDR (processing_gcc_compilation, type)) | |
361 | { | |
362 | CHECK_TYPEDEF (type); | |
363 | ||
364 | return (TYPE_CODE (type) == TYPE_CODE_STRUCT | |
365 | || TYPE_CODE (type) == TYPE_CODE_UNION | |
366 | || TYPE_CODE (type) == TYPE_CODE_SET | |
367 | || TYPE_CODE (type) == TYPE_CODE_BITSTRING); | |
368 | } | |
369 | ||
370 | return 0; | |
371 | } | |
372 | ||
01fb7433 | 373 | \f |
b4a20239 AC |
374 | /* Functions to manipulate the endianness of the target. */ |
375 | ||
1ba607ad | 376 | /* ``target_byte_order'' is only used when non- multi-arch. |
afe64c1a AC |
377 | Multi-arch targets obtain the current byte order using the |
378 | TARGET_BYTE_ORDER gdbarch method. | |
379 | ||
380 | The choice of initial value is entirely arbitrary. During startup, | |
381 | the function initialize_current_architecture() updates this value | |
382 | based on default byte-order information extracted from BFD. */ | |
a8cf2722 AC |
383 | static int target_byte_order = BFD_ENDIAN_BIG; |
384 | static int target_byte_order_auto = 1; | |
385 | ||
386 | enum bfd_endian | |
387 | selected_byte_order (void) | |
388 | { | |
389 | if (target_byte_order_auto) | |
390 | return BFD_ENDIAN_UNKNOWN; | |
391 | else | |
392 | return target_byte_order; | |
393 | } | |
b4a20239 | 394 | |
53904c9e AC |
395 | static const char endian_big[] = "big"; |
396 | static const char endian_little[] = "little"; | |
397 | static const char endian_auto[] = "auto"; | |
398 | static const char *endian_enum[] = | |
b4a20239 AC |
399 | { |
400 | endian_big, | |
401 | endian_little, | |
402 | endian_auto, | |
403 | NULL, | |
404 | }; | |
53904c9e | 405 | static const char *set_endian_string; |
b4a20239 AC |
406 | |
407 | /* Called by ``show endian''. */ | |
408 | ||
409 | static void | |
410 | show_endian (char *args, int from_tty) | |
411 | { | |
a8cf2722 | 412 | if (target_byte_order_auto) |
b4a20239 | 413 | printf_unfiltered ("The target endianness is set automatically (currently %s endian)\n", |
d7449b42 | 414 | (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG ? "big" : "little")); |
b4a20239 AC |
415 | else |
416 | printf_unfiltered ("The target is assumed to be %s endian\n", | |
d7449b42 | 417 | (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG ? "big" : "little")); |
b4a20239 AC |
418 | } |
419 | ||
420 | static void | |
421 | set_endian (char *ignore_args, int from_tty, struct cmd_list_element *c) | |
422 | { | |
3fd3d7d2 | 423 | if (set_endian_string == endian_auto) |
b4a20239 AC |
424 | { |
425 | target_byte_order_auto = 1; | |
426 | } | |
427 | else if (set_endian_string == endian_little) | |
428 | { | |
d90cf509 | 429 | struct gdbarch_info info; |
b4a20239 | 430 | target_byte_order_auto = 0; |
d90cf509 AC |
431 | gdbarch_info_init (&info); |
432 | info.byte_order = BFD_ENDIAN_LITTLE; | |
433 | if (! gdbarch_update_p (info)) | |
434 | printf_unfiltered ("Little endian target not supported by GDB\n"); | |
b4a20239 AC |
435 | } |
436 | else if (set_endian_string == endian_big) | |
437 | { | |
d90cf509 | 438 | struct gdbarch_info info; |
b4a20239 | 439 | target_byte_order_auto = 0; |
d90cf509 AC |
440 | gdbarch_info_init (&info); |
441 | info.byte_order = BFD_ENDIAN_BIG; | |
442 | if (! gdbarch_update_p (info)) | |
443 | printf_unfiltered ("Big endian target not supported by GDB\n"); | |
b4a20239 AC |
444 | } |
445 | else | |
8e65ff28 AC |
446 | internal_error (__FILE__, __LINE__, |
447 | "set_endian: bad value"); | |
b4a20239 AC |
448 | show_endian (NULL, from_tty); |
449 | } | |
450 | ||
b4a20239 AC |
451 | /* Functions to manipulate the architecture of the target */ |
452 | ||
453 | enum set_arch { set_arch_auto, set_arch_manual }; | |
454 | ||
a8cf2722 | 455 | static int target_architecture_auto = 1; |
b4a20239 | 456 | |
a8cf2722 AC |
457 | static const char *set_architecture_string; |
458 | ||
459 | const char * | |
460 | selected_architecture_name (void) | |
461 | { | |
462 | if (target_architecture_auto) | |
463 | return NULL; | |
464 | else | |
465 | return set_architecture_string; | |
466 | } | |
b4a20239 | 467 | |
b4a20239 AC |
468 | /* Called if the user enters ``show architecture'' without an |
469 | argument. */ | |
470 | ||
471 | static void | |
472 | show_architecture (char *args, int from_tty) | |
473 | { | |
474 | const char *arch; | |
475 | arch = TARGET_ARCHITECTURE->printable_name; | |
476 | if (target_architecture_auto) | |
477 | printf_filtered ("The target architecture is set automatically (currently %s)\n", arch); | |
478 | else | |
479 | printf_filtered ("The target architecture is assumed to be %s\n", arch); | |
480 | } | |
481 | ||
482 | ||
483 | /* Called if the user enters ``set architecture'' with or without an | |
484 | argument. */ | |
485 | ||
486 | static void | |
487 | set_architecture (char *ignore_args, int from_tty, struct cmd_list_element *c) | |
488 | { | |
489 | if (strcmp (set_architecture_string, "auto") == 0) | |
490 | { | |
491 | target_architecture_auto = 1; | |
492 | } | |
d90cf509 | 493 | else |
b4a20239 AC |
494 | { |
495 | struct gdbarch_info info; | |
fb6ecb0f | 496 | gdbarch_info_init (&info); |
b4a20239 AC |
497 | info.bfd_arch_info = bfd_scan_arch (set_architecture_string); |
498 | if (info.bfd_arch_info == NULL) | |
8e65ff28 AC |
499 | internal_error (__FILE__, __LINE__, |
500 | "set_architecture: bfd_scan_arch failed"); | |
16f33e29 | 501 | if (gdbarch_update_p (info)) |
b4a20239 AC |
502 | target_architecture_auto = 0; |
503 | else | |
ec3d358c | 504 | printf_unfiltered ("Architecture `%s' not recognized.\n", |
b4a20239 AC |
505 | set_architecture_string); |
506 | } | |
b4a20239 AC |
507 | show_architecture (NULL, from_tty); |
508 | } | |
509 | ||
ebdba546 AC |
510 | /* Try to select a global architecture that matches "info". Return |
511 | non-zero if the attempt succeds. */ | |
512 | int | |
513 | gdbarch_update_p (struct gdbarch_info info) | |
514 | { | |
515 | struct gdbarch *new_gdbarch = gdbarch_find_by_info (info); | |
516 | ||
517 | /* If there no architecture by that name, reject the request. */ | |
518 | if (new_gdbarch == NULL) | |
519 | { | |
520 | if (gdbarch_debug) | |
521 | fprintf_unfiltered (gdb_stdlog, "gdbarch_update_p: " | |
522 | "Architecture not found\n"); | |
523 | return 0; | |
524 | } | |
525 | ||
526 | /* If it is the same old architecture, accept the request (but don't | |
527 | swap anything). */ | |
528 | if (new_gdbarch == current_gdbarch) | |
529 | { | |
530 | if (gdbarch_debug) | |
531 | fprintf_unfiltered (gdb_stdlog, "gdbarch_update_p: " | |
532 | "Architecture 0x%08lx (%s) unchanged\n", | |
533 | (long) new_gdbarch, | |
534 | gdbarch_bfd_arch_info (new_gdbarch)->printable_name); | |
535 | return 1; | |
536 | } | |
537 | ||
538 | /* It's a new architecture, swap it in. */ | |
539 | if (gdbarch_debug) | |
540 | fprintf_unfiltered (gdb_stdlog, "gdbarch_update_p: " | |
541 | "New architecture 0x%08lx (%s) selected\n", | |
542 | (long) new_gdbarch, | |
543 | gdbarch_bfd_arch_info (new_gdbarch)->printable_name); | |
544 | deprecated_current_gdbarch_select_hack (new_gdbarch); | |
545 | ||
546 | return 1; | |
547 | } | |
548 | ||
2b026650 MK |
549 | /* Return the architecture for ABFD. If no suitable architecture |
550 | could be find, return NULL. */ | |
551 | ||
552 | struct gdbarch * | |
553 | gdbarch_from_bfd (bfd *abfd) | |
b4a20239 | 554 | { |
2b026650 MK |
555 | struct gdbarch *old_gdbarch = current_gdbarch; |
556 | struct gdbarch *new_gdbarch; | |
d90cf509 | 557 | struct gdbarch_info info; |
2b026650 | 558 | |
d90cf509 AC |
559 | gdbarch_info_init (&info); |
560 | info.abfd = abfd; | |
b60eb90d | 561 | return gdbarch_find_by_info (info); |
2b026650 MK |
562 | } |
563 | ||
564 | /* Set the dynamic target-system-dependent parameters (architecture, | |
565 | byte-order) using information found in the BFD */ | |
566 | ||
567 | void | |
568 | set_gdbarch_from_file (bfd *abfd) | |
569 | { | |
570 | struct gdbarch *gdbarch; | |
571 | ||
572 | gdbarch = gdbarch_from_bfd (abfd); | |
573 | if (gdbarch == NULL) | |
d90cf509 | 574 | error ("Architecture of file not recognized.\n"); |
b60eb90d | 575 | deprecated_current_gdbarch_select_hack (gdbarch); |
b4a20239 AC |
576 | } |
577 | ||
578 | /* Initialize the current architecture. Update the ``set | |
579 | architecture'' command so that it specifies a list of valid | |
580 | architectures. */ | |
581 | ||
1ba607ad AC |
582 | #ifdef DEFAULT_BFD_ARCH |
583 | extern const bfd_arch_info_type DEFAULT_BFD_ARCH; | |
584 | static const bfd_arch_info_type *default_bfd_arch = &DEFAULT_BFD_ARCH; | |
585 | #else | |
4b9b3959 | 586 | static const bfd_arch_info_type *default_bfd_arch; |
1ba607ad AC |
587 | #endif |
588 | ||
589 | #ifdef DEFAULT_BFD_VEC | |
590 | extern const bfd_target DEFAULT_BFD_VEC; | |
591 | static const bfd_target *default_bfd_vec = &DEFAULT_BFD_VEC; | |
592 | #else | |
593 | static const bfd_target *default_bfd_vec; | |
594 | #endif | |
595 | ||
b4a20239 AC |
596 | void |
597 | initialize_current_architecture (void) | |
598 | { | |
599 | const char **arches = gdbarch_printable_names (); | |
b4a20239 | 600 | |
1ba607ad AC |
601 | /* determine a default architecture and byte order. */ |
602 | struct gdbarch_info info; | |
fb6ecb0f | 603 | gdbarch_info_init (&info); |
1ba607ad AC |
604 | |
605 | /* Find a default architecture. */ | |
606 | if (info.bfd_arch_info == NULL | |
607 | && default_bfd_arch != NULL) | |
608 | info.bfd_arch_info = default_bfd_arch; | |
609 | if (info.bfd_arch_info == NULL) | |
b4a20239 | 610 | { |
1ba607ad AC |
611 | /* Choose the architecture by taking the first one |
612 | alphabetically. */ | |
613 | const char *chosen = arches[0]; | |
b4a20239 | 614 | const char **arch; |
b4a20239 AC |
615 | for (arch = arches; *arch != NULL; arch++) |
616 | { | |
b4a20239 AC |
617 | if (strcmp (*arch, chosen) < 0) |
618 | chosen = *arch; | |
619 | } | |
620 | if (chosen == NULL) | |
8e65ff28 AC |
621 | internal_error (__FILE__, __LINE__, |
622 | "initialize_current_architecture: No arch"); | |
b4a20239 AC |
623 | info.bfd_arch_info = bfd_scan_arch (chosen); |
624 | if (info.bfd_arch_info == NULL) | |
8e65ff28 AC |
625 | internal_error (__FILE__, __LINE__, |
626 | "initialize_current_architecture: Arch not found"); | |
1ba607ad AC |
627 | } |
628 | ||
afe64c1a | 629 | /* Take several guesses at a byte order. */ |
428721aa | 630 | if (info.byte_order == BFD_ENDIAN_UNKNOWN |
1ba607ad AC |
631 | && default_bfd_vec != NULL) |
632 | { | |
633 | /* Extract BFD's default vector's byte order. */ | |
634 | switch (default_bfd_vec->byteorder) | |
635 | { | |
636 | case BFD_ENDIAN_BIG: | |
d7449b42 | 637 | info.byte_order = BFD_ENDIAN_BIG; |
1ba607ad AC |
638 | break; |
639 | case BFD_ENDIAN_LITTLE: | |
778eb05e | 640 | info.byte_order = BFD_ENDIAN_LITTLE; |
1ba607ad AC |
641 | break; |
642 | default: | |
643 | break; | |
644 | } | |
645 | } | |
428721aa | 646 | if (info.byte_order == BFD_ENDIAN_UNKNOWN) |
1ba607ad AC |
647 | { |
648 | /* look for ``*el-*'' in the target name. */ | |
649 | const char *chp; | |
650 | chp = strchr (target_name, '-'); | |
651 | if (chp != NULL | |
652 | && chp - 2 >= target_name | |
653 | && strncmp (chp - 2, "el", 2) == 0) | |
778eb05e | 654 | info.byte_order = BFD_ENDIAN_LITTLE; |
1ba607ad | 655 | } |
428721aa | 656 | if (info.byte_order == BFD_ENDIAN_UNKNOWN) |
1ba607ad AC |
657 | { |
658 | /* Wire it to big-endian!!! */ | |
d7449b42 | 659 | info.byte_order = BFD_ENDIAN_BIG; |
1ba607ad AC |
660 | } |
661 | ||
d90cf509 AC |
662 | if (! gdbarch_update_p (info)) |
663 | internal_error (__FILE__, __LINE__, | |
664 | "initialize_current_architecture: Selection of initial architecture failed"); | |
b4a20239 | 665 | |
1ba607ad AC |
666 | /* Create the ``set architecture'' command appending ``auto'' to the |
667 | list of architectures. */ | |
b4a20239 AC |
668 | { |
669 | struct cmd_list_element *c; | |
670 | /* Append ``auto''. */ | |
671 | int nr; | |
672 | for (nr = 0; arches[nr] != NULL; nr++); | |
673 | arches = xrealloc (arches, sizeof (char*) * (nr + 2)); | |
674 | arches[nr + 0] = "auto"; | |
675 | arches[nr + 1] = NULL; | |
676 | /* FIXME: add_set_enum_cmd() uses an array of ``char *'' instead | |
677 | of ``const char *''. We just happen to know that the casts are | |
678 | safe. */ | |
679 | c = add_set_enum_cmd ("architecture", class_support, | |
53904c9e | 680 | arches, &set_architecture_string, |
b4a20239 AC |
681 | "Set architecture of target.", |
682 | &setlist); | |
9f60d481 | 683 | set_cmd_sfunc (c, set_architecture); |
b4a20239 AC |
684 | add_alias_cmd ("processor", "architecture", class_support, 1, &setlist); |
685 | /* Don't use set_from_show - need to print both auto/manual and | |
686 | current setting. */ | |
687 | add_cmd ("architecture", class_support, show_architecture, | |
688 | "Show the current target architecture", &showlist); | |
b4a20239 AC |
689 | } |
690 | } | |
691 | ||
692 | ||
fb6ecb0f AC |
693 | /* Initialize a gdbarch info to values that will be automatically |
694 | overridden. Note: Originally, this ``struct info'' was initialized | |
ce2826aa | 695 | using memset(0). Unfortunately, that ran into problems, namely |
fb6ecb0f AC |
696 | BFD_ENDIAN_BIG is zero. An explicit initialization function that |
697 | can explicitly set each field to a well defined value is used. */ | |
698 | ||
699 | void | |
700 | gdbarch_info_init (struct gdbarch_info *info) | |
701 | { | |
702 | memset (info, 0, sizeof (struct gdbarch_info)); | |
428721aa | 703 | info->byte_order = BFD_ENDIAN_UNKNOWN; |
4be87837 | 704 | info->osabi = GDB_OSABI_UNINITIALIZED; |
fb6ecb0f AC |
705 | } |
706 | ||
100bcc3f | 707 | /* Similar to init, but this time fill in the blanks. Information is |
bf922ad9 AC |
708 | obtained from the specified architecture, global "set ..." options, |
709 | and explicitly initialized INFO fields. */ | |
710 | ||
711 | void | |
712 | gdbarch_info_fill (struct gdbarch *gdbarch, struct gdbarch_info *info) | |
713 | { | |
714 | /* "(gdb) set architecture ...". */ | |
715 | if (info->bfd_arch_info == NULL | |
716 | && !target_architecture_auto | |
717 | && gdbarch != NULL) | |
718 | info->bfd_arch_info = gdbarch_bfd_arch_info (gdbarch); | |
719 | if (info->bfd_arch_info == NULL | |
720 | && info->abfd != NULL | |
721 | && bfd_get_arch (info->abfd) != bfd_arch_unknown | |
722 | && bfd_get_arch (info->abfd) != bfd_arch_obscure) | |
723 | info->bfd_arch_info = bfd_get_arch_info (info->abfd); | |
724 | if (info->bfd_arch_info == NULL | |
725 | && gdbarch != NULL) | |
726 | info->bfd_arch_info = gdbarch_bfd_arch_info (gdbarch); | |
727 | ||
728 | /* "(gdb) set byte-order ...". */ | |
729 | if (info->byte_order == BFD_ENDIAN_UNKNOWN | |
730 | && !target_byte_order_auto | |
731 | && gdbarch != NULL) | |
732 | info->byte_order = gdbarch_byte_order (gdbarch); | |
733 | /* From the INFO struct. */ | |
734 | if (info->byte_order == BFD_ENDIAN_UNKNOWN | |
735 | && info->abfd != NULL) | |
736 | info->byte_order = (bfd_big_endian (info->abfd) ? BFD_ENDIAN_BIG | |
737 | : bfd_little_endian (info->abfd) ? BFD_ENDIAN_LITTLE | |
738 | : BFD_ENDIAN_UNKNOWN); | |
739 | /* From the current target. */ | |
740 | if (info->byte_order == BFD_ENDIAN_UNKNOWN | |
741 | && gdbarch != NULL) | |
742 | info->byte_order = gdbarch_byte_order (gdbarch); | |
743 | ||
744 | /* "(gdb) set osabi ...". Handled by gdbarch_lookup_osabi. */ | |
745 | if (info->osabi == GDB_OSABI_UNINITIALIZED) | |
746 | info->osabi = gdbarch_lookup_osabi (info->abfd); | |
747 | if (info->osabi == GDB_OSABI_UNINITIALIZED | |
748 | && gdbarch != NULL) | |
749 | info->osabi = gdbarch_osabi (gdbarch); | |
750 | ||
751 | /* Must have at least filled in the architecture. */ | |
752 | gdb_assert (info->bfd_arch_info != NULL); | |
753 | } | |
754 | ||
c0e8c252 AC |
755 | /* */ |
756 | ||
a78f21af | 757 | extern initialize_file_ftype _initialize_gdbarch_utils; /* -Wmissing-prototypes */ |
c0e8c252 AC |
758 | |
759 | void | |
b4a20239 | 760 | _initialize_gdbarch_utils (void) |
c0e8c252 | 761 | { |
b4a20239 AC |
762 | struct cmd_list_element *c; |
763 | c = add_set_enum_cmd ("endian", class_support, | |
764 | endian_enum, &set_endian_string, | |
765 | "Set endianness of target.", | |
766 | &setlist); | |
9f60d481 | 767 | set_cmd_sfunc (c, set_endian); |
b4a20239 AC |
768 | /* Don't use set_from_show - need to print both auto/manual and |
769 | current setting. */ | |
770 | add_cmd ("endian", class_support, show_endian, | |
771 | "Show the current byte-order", &showlist); | |
c0e8c252 | 772 | } |