Commit | Line | Data |
---|---|---|
c0e8c252 | 1 | /* Dynamic architecture support for GDB, the GNU debugger. |
f4f9705a | 2 | |
750eb019 AC |
3 | Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004 Free Software |
4 | Foundation, 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" |
750eb019 | 33 | #include "gdbcore.h" |
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 | ||
1fd35568 JB |
63 | int |
64 | always_use_struct_convention (int gcc_p, struct type *value_type) | |
65 | { | |
66 | return 1; | |
67 | } | |
68 | ||
750eb019 AC |
69 | enum return_value_convention |
70 | legacy_return_value (struct gdbarch *gdbarch, struct type *valtype, | |
71 | struct regcache *regcache, void *readbuf, | |
72 | const void *writebuf) | |
73 | { | |
74 | /* NOTE: cagney/2004-06-13: The gcc_p parameter to | |
75 | USE_STRUCT_CONVENTION isn't used. */ | |
76 | int struct_return = ((TYPE_CODE (valtype) == TYPE_CODE_STRUCT | |
77 | || TYPE_CODE (valtype) == TYPE_CODE_UNION | |
78 | || TYPE_CODE (valtype) == TYPE_CODE_ARRAY) | |
79 | && DEPRECATED_USE_STRUCT_CONVENTION (0, valtype)); | |
80 | ||
81 | if (writebuf != NULL) | |
82 | { | |
83 | gdb_assert (!struct_return); | |
84 | /* NOTE: cagney/2004-06-13: See stack.c:return_command. Old | |
85 | architectures don't expect STORE_RETURN_VALUE to handle small | |
86 | structures. Should not be called with such types. */ | |
87 | gdb_assert (TYPE_CODE (valtype) != TYPE_CODE_STRUCT | |
88 | && TYPE_CODE (valtype) != TYPE_CODE_UNION); | |
89 | STORE_RETURN_VALUE (valtype, regcache, writebuf); | |
90 | } | |
91 | ||
92 | if (readbuf != NULL) | |
93 | { | |
94 | gdb_assert (!struct_return); | |
95 | EXTRACT_RETURN_VALUE (valtype, regcache, readbuf); | |
96 | } | |
97 | ||
98 | if (struct_return) | |
99 | return RETURN_VALUE_STRUCT_CONVENTION; | |
100 | else | |
101 | return RETURN_VALUE_REGISTER_CONVENTION; | |
102 | } | |
1fd35568 | 103 | |
4182591f AC |
104 | int |
105 | legacy_register_sim_regno (int regnum) | |
106 | { | |
107 | /* Only makes sense to supply raw registers. */ | |
108 | gdb_assert (regnum >= 0 && regnum < NUM_REGS); | |
109 | /* NOTE: cagney/2002-05-13: The old code did it this way and it is | |
110 | suspected that some GDB/SIM combinations may rely on this | |
111 | behavour. The default should be one2one_register_sim_regno | |
112 | (below). */ | |
113 | if (REGISTER_NAME (regnum) != NULL | |
114 | && REGISTER_NAME (regnum)[0] != '\0') | |
115 | return regnum; | |
116 | else | |
117 | return LEGACY_SIM_REGNO_IGNORE; | |
118 | } | |
119 | ||
bdcd319a CV |
120 | CORE_ADDR |
121 | generic_skip_trampoline_code (CORE_ADDR pc) | |
122 | { | |
123 | return 0; | |
124 | } | |
125 | ||
dea0c52f | 126 | CORE_ADDR |
4c8c40e6 | 127 | generic_skip_solib_resolver (struct gdbarch *gdbarch, CORE_ADDR pc) |
dea0c52f MK |
128 | { |
129 | return 0; | |
130 | } | |
131 | ||
68e9cc94 CV |
132 | int |
133 | generic_in_solib_call_trampoline (CORE_ADDR pc, char *name) | |
134 | { | |
135 | return 0; | |
136 | } | |
137 | ||
d50355b6 MS |
138 | int |
139 | generic_in_solib_return_trampoline (CORE_ADDR pc, char *name) | |
140 | { | |
141 | return 0; | |
142 | } | |
143 | ||
c12260ac CV |
144 | int |
145 | generic_in_function_epilogue_p (struct gdbarch *gdbarch, CORE_ADDR pc) | |
146 | { | |
147 | return 0; | |
148 | } | |
149 | ||
c0e8c252 | 150 | void |
f6684c31 AC |
151 | generic_remote_translate_xfer_address (struct gdbarch *gdbarch, |
152 | struct regcache *regcache, | |
153 | CORE_ADDR gdb_addr, int gdb_len, | |
c0e8c252 AC |
154 | CORE_ADDR * rem_addr, int *rem_len) |
155 | { | |
156 | *rem_addr = gdb_addr; | |
157 | *rem_len = gdb_len; | |
158 | } | |
159 | ||
3339cf8b AC |
160 | /* Helper functions for INNER_THAN */ |
161 | ||
162 | int | |
fba45db2 | 163 | core_addr_lessthan (CORE_ADDR lhs, CORE_ADDR rhs) |
3339cf8b AC |
164 | { |
165 | return (lhs < rhs); | |
166 | } | |
167 | ||
168 | int | |
fba45db2 | 169 | core_addr_greaterthan (CORE_ADDR lhs, CORE_ADDR rhs) |
3339cf8b AC |
170 | { |
171 | return (lhs > rhs); | |
172 | } | |
173 | ||
174 | ||
f0d4cc9e AC |
175 | /* Helper functions for TARGET_{FLOAT,DOUBLE}_FORMAT */ |
176 | ||
177 | const struct floatformat * | |
178 | default_float_format (struct gdbarch *gdbarch) | |
179 | { | |
f0d4cc9e | 180 | int byte_order = gdbarch_byte_order (gdbarch); |
f0d4cc9e AC |
181 | switch (byte_order) |
182 | { | |
d7449b42 | 183 | case BFD_ENDIAN_BIG: |
f0d4cc9e | 184 | return &floatformat_ieee_single_big; |
778eb05e | 185 | case BFD_ENDIAN_LITTLE: |
f0d4cc9e AC |
186 | return &floatformat_ieee_single_little; |
187 | default: | |
8e65ff28 AC |
188 | internal_error (__FILE__, __LINE__, |
189 | "default_float_format: bad byte order"); | |
f0d4cc9e AC |
190 | } |
191 | } | |
192 | ||
193 | ||
194 | const struct floatformat * | |
195 | default_double_format (struct gdbarch *gdbarch) | |
196 | { | |
f0d4cc9e | 197 | int byte_order = gdbarch_byte_order (gdbarch); |
f0d4cc9e AC |
198 | switch (byte_order) |
199 | { | |
d7449b42 | 200 | case BFD_ENDIAN_BIG: |
f0d4cc9e | 201 | return &floatformat_ieee_double_big; |
778eb05e | 202 | case BFD_ENDIAN_LITTLE: |
f0d4cc9e AC |
203 | return &floatformat_ieee_double_little; |
204 | default: | |
8e65ff28 AC |
205 | internal_error (__FILE__, __LINE__, |
206 | "default_double_format: bad byte order"); | |
f0d4cc9e AC |
207 | } |
208 | } | |
209 | ||
193e3b1a AC |
210 | /* Misc helper functions for targets. */ |
211 | ||
f517ea4e | 212 | CORE_ADDR |
875e1767 | 213 | core_addr_identity (CORE_ADDR addr) |
f517ea4e PS |
214 | { |
215 | return addr; | |
216 | } | |
217 | ||
e2d0e7eb AC |
218 | CORE_ADDR |
219 | convert_from_func_ptr_addr_identity (struct gdbarch *gdbarch, CORE_ADDR addr, | |
220 | struct target_ops *targ) | |
221 | { | |
222 | return addr; | |
223 | } | |
224 | ||
88c72b7d AC |
225 | int |
226 | no_op_reg_to_regnum (int reg) | |
227 | { | |
228 | return reg; | |
229 | } | |
230 | ||
a2cf933a EZ |
231 | void |
232 | default_elf_make_msymbol_special (asymbol *sym, struct minimal_symbol *msym) | |
233 | { | |
234 | return; | |
235 | } | |
236 | ||
237 | void | |
238 | default_coff_make_msymbol_special (int val, struct minimal_symbol *msym) | |
239 | { | |
240 | return; | |
241 | } | |
242 | ||
01fb7433 AC |
243 | int |
244 | cannot_register_not (int regnum) | |
245 | { | |
246 | return 0; | |
247 | } | |
39d4ef09 AC |
248 | |
249 | /* Legacy version of target_virtual_frame_pointer(). Assumes that | |
0ba6dca9 AC |
250 | there is an DEPRECATED_FP_REGNUM and that it is the same, cooked or |
251 | raw. */ | |
39d4ef09 AC |
252 | |
253 | void | |
254 | legacy_virtual_frame_pointer (CORE_ADDR pc, | |
255 | int *frame_regnum, | |
256 | LONGEST *frame_offset) | |
257 | { | |
20bcf01c AC |
258 | /* FIXME: cagney/2002-09-13: This code is used when identifying the |
259 | frame pointer of the current PC. It is assuming that a single | |
260 | register and an offset can determine this. I think it should | |
261 | instead generate a byte code expression as that would work better | |
262 | with things like Dwarf2's CFI. */ | |
0ba6dca9 AC |
263 | if (DEPRECATED_FP_REGNUM >= 0 && DEPRECATED_FP_REGNUM < NUM_REGS) |
264 | *frame_regnum = DEPRECATED_FP_REGNUM; | |
20bcf01c AC |
265 | else if (SP_REGNUM >= 0 && SP_REGNUM < NUM_REGS) |
266 | *frame_regnum = SP_REGNUM; | |
267 | else | |
268 | /* Should this be an internal error? I guess so, it is reflecting | |
269 | an architectural limitation in the current design. */ | |
270 | internal_error (__FILE__, __LINE__, "No virtual frame pointer available"); | |
39d4ef09 AC |
271 | *frame_offset = 0; |
272 | } | |
46cd78fb | 273 | |
b2e75d78 AC |
274 | /* Assume the world is sane, every register's virtual and real size |
275 | is identical. */ | |
46cd78fb AC |
276 | |
277 | int | |
b2e75d78 | 278 | generic_register_size (int regnum) |
46cd78fb AC |
279 | { |
280 | gdb_assert (regnum >= 0 && regnum < NUM_REGS + NUM_PSEUDO_REGS); | |
01e1877c | 281 | return TYPE_LENGTH (gdbarch_register_type (current_gdbarch, regnum)); |
ce29138a MS |
282 | } |
283 | ||
a7e3c2ad AC |
284 | /* Assume all registers are adjacent. */ |
285 | ||
286 | int | |
287 | generic_register_byte (int regnum) | |
288 | { | |
289 | int byte; | |
290 | int i; | |
291 | gdb_assert (regnum >= 0 && regnum < NUM_REGS + NUM_PSEUDO_REGS); | |
292 | byte = 0; | |
293 | for (i = 0; i < regnum; i++) | |
294 | { | |
0aa7e1aa | 295 | byte += generic_register_size (i); |
a7e3c2ad AC |
296 | } |
297 | return byte; | |
298 | } | |
299 | ||
d7bd68ca AC |
300 | \f |
301 | int | |
302 | legacy_pc_in_sigtramp (CORE_ADDR pc, char *name) | |
303 | { | |
8c6b0e06 | 304 | #if defined (DEPRECATED_IN_SIGTRAMP) |
dbfe4626 | 305 | return DEPRECATED_IN_SIGTRAMP (pc, name); |
8c6b0e06 AC |
306 | #else |
307 | return name && strcmp ("_sigtramp", name) == 0; | |
db54fef4 | 308 | #endif |
d7bd68ca AC |
309 | } |
310 | ||
13d01224 | 311 | int |
a1f4a1b6 | 312 | generic_convert_register_p (int regnum, struct type *type) |
13d01224 | 313 | { |
9730f241 | 314 | return 0; |
13d01224 AC |
315 | } |
316 | ||
192cb3d4 MK |
317 | int |
318 | default_stabs_argument_has_addr (struct gdbarch *gdbarch, struct type *type) | |
319 | { | |
320 | if (DEPRECATED_REG_STRUCT_HAS_ADDR_P () | |
321 | && DEPRECATED_REG_STRUCT_HAS_ADDR (processing_gcc_compilation, type)) | |
322 | { | |
323 | CHECK_TYPEDEF (type); | |
324 | ||
325 | return (TYPE_CODE (type) == TYPE_CODE_STRUCT | |
326 | || TYPE_CODE (type) == TYPE_CODE_UNION | |
327 | || TYPE_CODE (type) == TYPE_CODE_SET | |
328 | || TYPE_CODE (type) == TYPE_CODE_BITSTRING); | |
329 | } | |
330 | ||
331 | return 0; | |
332 | } | |
333 | ||
01fb7433 | 334 | \f |
b4a20239 AC |
335 | /* Functions to manipulate the endianness of the target. */ |
336 | ||
1ba607ad | 337 | /* ``target_byte_order'' is only used when non- multi-arch. |
afe64c1a AC |
338 | Multi-arch targets obtain the current byte order using the |
339 | TARGET_BYTE_ORDER gdbarch method. | |
340 | ||
341 | The choice of initial value is entirely arbitrary. During startup, | |
342 | the function initialize_current_architecture() updates this value | |
343 | based on default byte-order information extracted from BFD. */ | |
a8cf2722 AC |
344 | static int target_byte_order = BFD_ENDIAN_BIG; |
345 | static int target_byte_order_auto = 1; | |
346 | ||
347 | enum bfd_endian | |
348 | selected_byte_order (void) | |
349 | { | |
350 | if (target_byte_order_auto) | |
351 | return BFD_ENDIAN_UNKNOWN; | |
352 | else | |
353 | return target_byte_order; | |
354 | } | |
b4a20239 | 355 | |
53904c9e AC |
356 | static const char endian_big[] = "big"; |
357 | static const char endian_little[] = "little"; | |
358 | static const char endian_auto[] = "auto"; | |
359 | static const char *endian_enum[] = | |
b4a20239 AC |
360 | { |
361 | endian_big, | |
362 | endian_little, | |
363 | endian_auto, | |
364 | NULL, | |
365 | }; | |
53904c9e | 366 | static const char *set_endian_string; |
b4a20239 AC |
367 | |
368 | /* Called by ``show endian''. */ | |
369 | ||
370 | static void | |
371 | show_endian (char *args, int from_tty) | |
372 | { | |
a8cf2722 | 373 | if (target_byte_order_auto) |
b4a20239 | 374 | printf_unfiltered ("The target endianness is set automatically (currently %s endian)\n", |
d7449b42 | 375 | (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG ? "big" : "little")); |
b4a20239 AC |
376 | else |
377 | printf_unfiltered ("The target is assumed to be %s endian\n", | |
d7449b42 | 378 | (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG ? "big" : "little")); |
b4a20239 AC |
379 | } |
380 | ||
381 | static void | |
382 | set_endian (char *ignore_args, int from_tty, struct cmd_list_element *c) | |
383 | { | |
3fd3d7d2 | 384 | if (set_endian_string == endian_auto) |
b4a20239 AC |
385 | { |
386 | target_byte_order_auto = 1; | |
387 | } | |
388 | else if (set_endian_string == endian_little) | |
389 | { | |
d90cf509 | 390 | struct gdbarch_info info; |
b4a20239 | 391 | target_byte_order_auto = 0; |
d90cf509 AC |
392 | gdbarch_info_init (&info); |
393 | info.byte_order = BFD_ENDIAN_LITTLE; | |
394 | if (! gdbarch_update_p (info)) | |
395 | printf_unfiltered ("Little endian target not supported by GDB\n"); | |
b4a20239 AC |
396 | } |
397 | else if (set_endian_string == endian_big) | |
398 | { | |
d90cf509 | 399 | struct gdbarch_info info; |
b4a20239 | 400 | target_byte_order_auto = 0; |
d90cf509 AC |
401 | gdbarch_info_init (&info); |
402 | info.byte_order = BFD_ENDIAN_BIG; | |
403 | if (! gdbarch_update_p (info)) | |
404 | printf_unfiltered ("Big endian target not supported by GDB\n"); | |
b4a20239 AC |
405 | } |
406 | else | |
8e65ff28 AC |
407 | internal_error (__FILE__, __LINE__, |
408 | "set_endian: bad value"); | |
b4a20239 AC |
409 | show_endian (NULL, from_tty); |
410 | } | |
411 | ||
b4a20239 AC |
412 | /* Functions to manipulate the architecture of the target */ |
413 | ||
414 | enum set_arch { set_arch_auto, set_arch_manual }; | |
415 | ||
a8cf2722 | 416 | static int target_architecture_auto = 1; |
b4a20239 | 417 | |
a8cf2722 AC |
418 | static const char *set_architecture_string; |
419 | ||
420 | const char * | |
421 | selected_architecture_name (void) | |
422 | { | |
423 | if (target_architecture_auto) | |
424 | return NULL; | |
425 | else | |
426 | return set_architecture_string; | |
427 | } | |
b4a20239 | 428 | |
b4a20239 AC |
429 | /* Called if the user enters ``show architecture'' without an |
430 | argument. */ | |
431 | ||
432 | static void | |
433 | show_architecture (char *args, int from_tty) | |
434 | { | |
435 | const char *arch; | |
436 | arch = TARGET_ARCHITECTURE->printable_name; | |
437 | if (target_architecture_auto) | |
438 | printf_filtered ("The target architecture is set automatically (currently %s)\n", arch); | |
439 | else | |
440 | printf_filtered ("The target architecture is assumed to be %s\n", arch); | |
441 | } | |
442 | ||
443 | ||
444 | /* Called if the user enters ``set architecture'' with or without an | |
445 | argument. */ | |
446 | ||
447 | static void | |
448 | set_architecture (char *ignore_args, int from_tty, struct cmd_list_element *c) | |
449 | { | |
450 | if (strcmp (set_architecture_string, "auto") == 0) | |
451 | { | |
452 | target_architecture_auto = 1; | |
453 | } | |
d90cf509 | 454 | else |
b4a20239 AC |
455 | { |
456 | struct gdbarch_info info; | |
fb6ecb0f | 457 | gdbarch_info_init (&info); |
b4a20239 AC |
458 | info.bfd_arch_info = bfd_scan_arch (set_architecture_string); |
459 | if (info.bfd_arch_info == NULL) | |
8e65ff28 AC |
460 | internal_error (__FILE__, __LINE__, |
461 | "set_architecture: bfd_scan_arch failed"); | |
16f33e29 | 462 | if (gdbarch_update_p (info)) |
b4a20239 AC |
463 | target_architecture_auto = 0; |
464 | else | |
ec3d358c | 465 | printf_unfiltered ("Architecture `%s' not recognized.\n", |
b4a20239 AC |
466 | set_architecture_string); |
467 | } | |
b4a20239 AC |
468 | show_architecture (NULL, from_tty); |
469 | } | |
470 | ||
ebdba546 AC |
471 | /* Try to select a global architecture that matches "info". Return |
472 | non-zero if the attempt succeds. */ | |
473 | int | |
474 | gdbarch_update_p (struct gdbarch_info info) | |
475 | { | |
476 | struct gdbarch *new_gdbarch = gdbarch_find_by_info (info); | |
477 | ||
478 | /* If there no architecture by that name, reject the request. */ | |
479 | if (new_gdbarch == NULL) | |
480 | { | |
481 | if (gdbarch_debug) | |
482 | fprintf_unfiltered (gdb_stdlog, "gdbarch_update_p: " | |
483 | "Architecture not found\n"); | |
484 | return 0; | |
485 | } | |
486 | ||
487 | /* If it is the same old architecture, accept the request (but don't | |
488 | swap anything). */ | |
489 | if (new_gdbarch == current_gdbarch) | |
490 | { | |
491 | if (gdbarch_debug) | |
492 | fprintf_unfiltered (gdb_stdlog, "gdbarch_update_p: " | |
493 | "Architecture 0x%08lx (%s) unchanged\n", | |
494 | (long) new_gdbarch, | |
495 | gdbarch_bfd_arch_info (new_gdbarch)->printable_name); | |
496 | return 1; | |
497 | } | |
498 | ||
499 | /* It's a new architecture, swap it in. */ | |
500 | if (gdbarch_debug) | |
501 | fprintf_unfiltered (gdb_stdlog, "gdbarch_update_p: " | |
502 | "New architecture 0x%08lx (%s) selected\n", | |
503 | (long) new_gdbarch, | |
504 | gdbarch_bfd_arch_info (new_gdbarch)->printable_name); | |
505 | deprecated_current_gdbarch_select_hack (new_gdbarch); | |
506 | ||
507 | return 1; | |
508 | } | |
509 | ||
2b026650 MK |
510 | /* Return the architecture for ABFD. If no suitable architecture |
511 | could be find, return NULL. */ | |
512 | ||
513 | struct gdbarch * | |
514 | gdbarch_from_bfd (bfd *abfd) | |
b4a20239 | 515 | { |
2b026650 MK |
516 | struct gdbarch *old_gdbarch = current_gdbarch; |
517 | struct gdbarch *new_gdbarch; | |
d90cf509 | 518 | struct gdbarch_info info; |
2b026650 | 519 | |
d90cf509 AC |
520 | gdbarch_info_init (&info); |
521 | info.abfd = abfd; | |
b60eb90d | 522 | return gdbarch_find_by_info (info); |
2b026650 MK |
523 | } |
524 | ||
525 | /* Set the dynamic target-system-dependent parameters (architecture, | |
526 | byte-order) using information found in the BFD */ | |
527 | ||
528 | void | |
529 | set_gdbarch_from_file (bfd *abfd) | |
530 | { | |
531 | struct gdbarch *gdbarch; | |
532 | ||
533 | gdbarch = gdbarch_from_bfd (abfd); | |
534 | if (gdbarch == NULL) | |
d90cf509 | 535 | error ("Architecture of file not recognized.\n"); |
b60eb90d | 536 | deprecated_current_gdbarch_select_hack (gdbarch); |
b4a20239 AC |
537 | } |
538 | ||
539 | /* Initialize the current architecture. Update the ``set | |
540 | architecture'' command so that it specifies a list of valid | |
541 | architectures. */ | |
542 | ||
1ba607ad AC |
543 | #ifdef DEFAULT_BFD_ARCH |
544 | extern const bfd_arch_info_type DEFAULT_BFD_ARCH; | |
545 | static const bfd_arch_info_type *default_bfd_arch = &DEFAULT_BFD_ARCH; | |
546 | #else | |
4b9b3959 | 547 | static const bfd_arch_info_type *default_bfd_arch; |
1ba607ad AC |
548 | #endif |
549 | ||
550 | #ifdef DEFAULT_BFD_VEC | |
551 | extern const bfd_target DEFAULT_BFD_VEC; | |
552 | static const bfd_target *default_bfd_vec = &DEFAULT_BFD_VEC; | |
553 | #else | |
554 | static const bfd_target *default_bfd_vec; | |
555 | #endif | |
556 | ||
b4a20239 AC |
557 | void |
558 | initialize_current_architecture (void) | |
559 | { | |
560 | const char **arches = gdbarch_printable_names (); | |
b4a20239 | 561 | |
1ba607ad AC |
562 | /* determine a default architecture and byte order. */ |
563 | struct gdbarch_info info; | |
fb6ecb0f | 564 | gdbarch_info_init (&info); |
1ba607ad AC |
565 | |
566 | /* Find a default architecture. */ | |
567 | if (info.bfd_arch_info == NULL | |
568 | && default_bfd_arch != NULL) | |
569 | info.bfd_arch_info = default_bfd_arch; | |
570 | if (info.bfd_arch_info == NULL) | |
b4a20239 | 571 | { |
1ba607ad AC |
572 | /* Choose the architecture by taking the first one |
573 | alphabetically. */ | |
574 | const char *chosen = arches[0]; | |
b4a20239 | 575 | const char **arch; |
b4a20239 AC |
576 | for (arch = arches; *arch != NULL; arch++) |
577 | { | |
b4a20239 AC |
578 | if (strcmp (*arch, chosen) < 0) |
579 | chosen = *arch; | |
580 | } | |
581 | if (chosen == NULL) | |
8e65ff28 AC |
582 | internal_error (__FILE__, __LINE__, |
583 | "initialize_current_architecture: No arch"); | |
b4a20239 AC |
584 | info.bfd_arch_info = bfd_scan_arch (chosen); |
585 | if (info.bfd_arch_info == NULL) | |
8e65ff28 AC |
586 | internal_error (__FILE__, __LINE__, |
587 | "initialize_current_architecture: Arch not found"); | |
1ba607ad AC |
588 | } |
589 | ||
afe64c1a | 590 | /* Take several guesses at a byte order. */ |
428721aa | 591 | if (info.byte_order == BFD_ENDIAN_UNKNOWN |
1ba607ad AC |
592 | && default_bfd_vec != NULL) |
593 | { | |
594 | /* Extract BFD's default vector's byte order. */ | |
595 | switch (default_bfd_vec->byteorder) | |
596 | { | |
597 | case BFD_ENDIAN_BIG: | |
d7449b42 | 598 | info.byte_order = BFD_ENDIAN_BIG; |
1ba607ad AC |
599 | break; |
600 | case BFD_ENDIAN_LITTLE: | |
778eb05e | 601 | info.byte_order = BFD_ENDIAN_LITTLE; |
1ba607ad AC |
602 | break; |
603 | default: | |
604 | break; | |
605 | } | |
606 | } | |
428721aa | 607 | if (info.byte_order == BFD_ENDIAN_UNKNOWN) |
1ba607ad AC |
608 | { |
609 | /* look for ``*el-*'' in the target name. */ | |
610 | const char *chp; | |
611 | chp = strchr (target_name, '-'); | |
612 | if (chp != NULL | |
613 | && chp - 2 >= target_name | |
614 | && strncmp (chp - 2, "el", 2) == 0) | |
778eb05e | 615 | info.byte_order = BFD_ENDIAN_LITTLE; |
1ba607ad | 616 | } |
428721aa | 617 | if (info.byte_order == BFD_ENDIAN_UNKNOWN) |
1ba607ad AC |
618 | { |
619 | /* Wire it to big-endian!!! */ | |
d7449b42 | 620 | info.byte_order = BFD_ENDIAN_BIG; |
1ba607ad AC |
621 | } |
622 | ||
d90cf509 AC |
623 | if (! gdbarch_update_p (info)) |
624 | internal_error (__FILE__, __LINE__, | |
625 | "initialize_current_architecture: Selection of initial architecture failed"); | |
b4a20239 | 626 | |
1ba607ad AC |
627 | /* Create the ``set architecture'' command appending ``auto'' to the |
628 | list of architectures. */ | |
b4a20239 AC |
629 | { |
630 | struct cmd_list_element *c; | |
631 | /* Append ``auto''. */ | |
632 | int nr; | |
633 | for (nr = 0; arches[nr] != NULL; nr++); | |
634 | arches = xrealloc (arches, sizeof (char*) * (nr + 2)); | |
635 | arches[nr + 0] = "auto"; | |
636 | arches[nr + 1] = NULL; | |
637 | /* FIXME: add_set_enum_cmd() uses an array of ``char *'' instead | |
638 | of ``const char *''. We just happen to know that the casts are | |
639 | safe. */ | |
640 | c = add_set_enum_cmd ("architecture", class_support, | |
53904c9e | 641 | arches, &set_architecture_string, |
b4a20239 AC |
642 | "Set architecture of target.", |
643 | &setlist); | |
9f60d481 | 644 | set_cmd_sfunc (c, set_architecture); |
b4a20239 AC |
645 | add_alias_cmd ("processor", "architecture", class_support, 1, &setlist); |
646 | /* Don't use set_from_show - need to print both auto/manual and | |
647 | current setting. */ | |
648 | add_cmd ("architecture", class_support, show_architecture, | |
649 | "Show the current target architecture", &showlist); | |
b4a20239 AC |
650 | } |
651 | } | |
652 | ||
653 | ||
fb6ecb0f AC |
654 | /* Initialize a gdbarch info to values that will be automatically |
655 | overridden. Note: Originally, this ``struct info'' was initialized | |
ce2826aa | 656 | using memset(0). Unfortunately, that ran into problems, namely |
fb6ecb0f AC |
657 | BFD_ENDIAN_BIG is zero. An explicit initialization function that |
658 | can explicitly set each field to a well defined value is used. */ | |
659 | ||
660 | void | |
661 | gdbarch_info_init (struct gdbarch_info *info) | |
662 | { | |
663 | memset (info, 0, sizeof (struct gdbarch_info)); | |
428721aa | 664 | info->byte_order = BFD_ENDIAN_UNKNOWN; |
4be87837 | 665 | info->osabi = GDB_OSABI_UNINITIALIZED; |
fb6ecb0f AC |
666 | } |
667 | ||
100bcc3f | 668 | /* Similar to init, but this time fill in the blanks. Information is |
bf922ad9 AC |
669 | obtained from the specified architecture, global "set ..." options, |
670 | and explicitly initialized INFO fields. */ | |
671 | ||
672 | void | |
673 | gdbarch_info_fill (struct gdbarch *gdbarch, struct gdbarch_info *info) | |
674 | { | |
675 | /* "(gdb) set architecture ...". */ | |
676 | if (info->bfd_arch_info == NULL | |
677 | && !target_architecture_auto | |
678 | && gdbarch != NULL) | |
679 | info->bfd_arch_info = gdbarch_bfd_arch_info (gdbarch); | |
680 | if (info->bfd_arch_info == NULL | |
681 | && info->abfd != NULL | |
682 | && bfd_get_arch (info->abfd) != bfd_arch_unknown | |
683 | && bfd_get_arch (info->abfd) != bfd_arch_obscure) | |
684 | info->bfd_arch_info = bfd_get_arch_info (info->abfd); | |
685 | if (info->bfd_arch_info == NULL | |
686 | && gdbarch != NULL) | |
687 | info->bfd_arch_info = gdbarch_bfd_arch_info (gdbarch); | |
688 | ||
689 | /* "(gdb) set byte-order ...". */ | |
690 | if (info->byte_order == BFD_ENDIAN_UNKNOWN | |
691 | && !target_byte_order_auto | |
692 | && gdbarch != NULL) | |
693 | info->byte_order = gdbarch_byte_order (gdbarch); | |
694 | /* From the INFO struct. */ | |
695 | if (info->byte_order == BFD_ENDIAN_UNKNOWN | |
696 | && info->abfd != NULL) | |
697 | info->byte_order = (bfd_big_endian (info->abfd) ? BFD_ENDIAN_BIG | |
698 | : bfd_little_endian (info->abfd) ? BFD_ENDIAN_LITTLE | |
699 | : BFD_ENDIAN_UNKNOWN); | |
700 | /* From the current target. */ | |
701 | if (info->byte_order == BFD_ENDIAN_UNKNOWN | |
702 | && gdbarch != NULL) | |
703 | info->byte_order = gdbarch_byte_order (gdbarch); | |
704 | ||
705 | /* "(gdb) set osabi ...". Handled by gdbarch_lookup_osabi. */ | |
706 | if (info->osabi == GDB_OSABI_UNINITIALIZED) | |
707 | info->osabi = gdbarch_lookup_osabi (info->abfd); | |
708 | if (info->osabi == GDB_OSABI_UNINITIALIZED | |
709 | && gdbarch != NULL) | |
710 | info->osabi = gdbarch_osabi (gdbarch); | |
711 | ||
712 | /* Must have at least filled in the architecture. */ | |
713 | gdb_assert (info->bfd_arch_info != NULL); | |
714 | } | |
715 | ||
c0e8c252 AC |
716 | /* */ |
717 | ||
a78f21af | 718 | extern initialize_file_ftype _initialize_gdbarch_utils; /* -Wmissing-prototypes */ |
c0e8c252 AC |
719 | |
720 | void | |
b4a20239 | 721 | _initialize_gdbarch_utils (void) |
c0e8c252 | 722 | { |
b4a20239 AC |
723 | struct cmd_list_element *c; |
724 | c = add_set_enum_cmd ("endian", class_support, | |
725 | endian_enum, &set_endian_string, | |
726 | "Set endianness of target.", | |
727 | &setlist); | |
9f60d481 | 728 | set_cmd_sfunc (c, set_endian); |
b4a20239 AC |
729 | /* Don't use set_from_show - need to print both auto/manual and |
730 | current setting. */ | |
731 | add_cmd ("endian", class_support, show_endian, | |
732 | "Show the current byte-order", &showlist); | |
c0e8c252 | 733 | } |