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 | ||
fa88f677 | 134 | const char * |
c0e8c252 AC |
135 | legacy_register_name (int i) |
136 | { | |
137 | #ifdef REGISTER_NAMES | |
138 | static char *names[] = REGISTER_NAMES; | |
139 | if (i < 0 || i >= (sizeof (names) / sizeof (*names))) | |
140 | return NULL; | |
141 | else | |
142 | return names[i]; | |
143 | #else | |
8e65ff28 AC |
144 | internal_error (__FILE__, __LINE__, |
145 | "legacy_register_name: called."); | |
c0e8c252 AC |
146 | return NULL; |
147 | #endif | |
148 | } | |
149 | ||
150 | #if defined (CALL_DUMMY) | |
151 | LONGEST legacy_call_dummy_words[] = CALL_DUMMY; | |
152 | #else | |
153 | LONGEST legacy_call_dummy_words[1]; | |
154 | #endif | |
155 | int legacy_sizeof_call_dummy_words = sizeof (legacy_call_dummy_words); | |
156 | ||
157 | void | |
f6684c31 AC |
158 | generic_remote_translate_xfer_address (struct gdbarch *gdbarch, |
159 | struct regcache *regcache, | |
160 | CORE_ADDR gdb_addr, int gdb_len, | |
c0e8c252 AC |
161 | CORE_ADDR * rem_addr, int *rem_len) |
162 | { | |
163 | *rem_addr = gdb_addr; | |
164 | *rem_len = gdb_len; | |
165 | } | |
166 | ||
dad41f9a AC |
167 | int |
168 | generic_prologue_frameless_p (CORE_ADDR ip) | |
169 | { | |
dad41f9a | 170 | return ip == SKIP_PROLOGUE (ip); |
dad41f9a AC |
171 | } |
172 | ||
2bf0cb65 EZ |
173 | /* New/multi-arched targets should use the correct gdbarch field |
174 | instead of using this global pointer. */ | |
175 | int | |
176 | legacy_print_insn (bfd_vma vma, disassemble_info *info) | |
177 | { | |
d7a27068 | 178 | return (*deprecated_tm_print_insn) (vma, info); |
2bf0cb65 | 179 | } |
dad41f9a | 180 | |
3339cf8b AC |
181 | /* Helper functions for INNER_THAN */ |
182 | ||
183 | int | |
fba45db2 | 184 | core_addr_lessthan (CORE_ADDR lhs, CORE_ADDR rhs) |
3339cf8b AC |
185 | { |
186 | return (lhs < rhs); | |
187 | } | |
188 | ||
189 | int | |
fba45db2 | 190 | core_addr_greaterthan (CORE_ADDR lhs, CORE_ADDR rhs) |
3339cf8b AC |
191 | { |
192 | return (lhs > rhs); | |
193 | } | |
194 | ||
195 | ||
f0d4cc9e AC |
196 | /* Helper functions for TARGET_{FLOAT,DOUBLE}_FORMAT */ |
197 | ||
198 | const struct floatformat * | |
199 | default_float_format (struct gdbarch *gdbarch) | |
200 | { | |
201 | #if GDB_MULTI_ARCH | |
202 | int byte_order = gdbarch_byte_order (gdbarch); | |
203 | #else | |
204 | int byte_order = TARGET_BYTE_ORDER; | |
205 | #endif | |
206 | switch (byte_order) | |
207 | { | |
d7449b42 | 208 | case BFD_ENDIAN_BIG: |
f0d4cc9e | 209 | return &floatformat_ieee_single_big; |
778eb05e | 210 | case BFD_ENDIAN_LITTLE: |
f0d4cc9e AC |
211 | return &floatformat_ieee_single_little; |
212 | default: | |
8e65ff28 AC |
213 | internal_error (__FILE__, __LINE__, |
214 | "default_float_format: bad byte order"); | |
f0d4cc9e AC |
215 | } |
216 | } | |
217 | ||
218 | ||
219 | const struct floatformat * | |
220 | default_double_format (struct gdbarch *gdbarch) | |
221 | { | |
222 | #if GDB_MULTI_ARCH | |
223 | int byte_order = gdbarch_byte_order (gdbarch); | |
224 | #else | |
225 | int byte_order = TARGET_BYTE_ORDER; | |
226 | #endif | |
227 | switch (byte_order) | |
228 | { | |
d7449b42 | 229 | case BFD_ENDIAN_BIG: |
f0d4cc9e | 230 | return &floatformat_ieee_double_big; |
778eb05e | 231 | case BFD_ENDIAN_LITTLE: |
f0d4cc9e AC |
232 | return &floatformat_ieee_double_little; |
233 | default: | |
8e65ff28 AC |
234 | internal_error (__FILE__, __LINE__, |
235 | "default_double_format: bad byte order"); | |
f0d4cc9e AC |
236 | } |
237 | } | |
238 | ||
193e3b1a AC |
239 | /* Misc helper functions for targets. */ |
240 | ||
193e3b1a | 241 | int |
781a750d | 242 | deprecated_register_convertible_not (int num) |
193e3b1a AC |
243 | { |
244 | return 0; | |
245 | } | |
246 | ||
b4a20239 | 247 | |
c8f9d51c JB |
248 | /* Under some ABI's that specify the `struct convention' for returning |
249 | structures by value, by the time we've returned from the function, | |
250 | the return value is sitting there in the caller's buffer, but GDB | |
251 | has no way to find the address of that buffer. | |
252 | ||
253 | On such architectures, use this function as your | |
254 | extract_struct_value_address method. When asked to a struct | |
255 | returned by value in this fashion, GDB will print a nice error | |
256 | message, instead of garbage. */ | |
257 | CORE_ADDR | |
258 | generic_cannot_extract_struct_value_address (char *dummy) | |
259 | { | |
260 | return 0; | |
261 | } | |
262 | ||
f517ea4e | 263 | CORE_ADDR |
875e1767 | 264 | core_addr_identity (CORE_ADDR addr) |
f517ea4e PS |
265 | { |
266 | return addr; | |
267 | } | |
268 | ||
88c72b7d AC |
269 | int |
270 | no_op_reg_to_regnum (int reg) | |
271 | { | |
272 | return reg; | |
273 | } | |
274 | ||
97f46953 | 275 | CORE_ADDR |
10312cc4 AC |
276 | init_frame_pc_noop (int fromleaf, struct frame_info *prev) |
277 | { | |
97f46953 AC |
278 | /* Do nothing, implies return the same PC value. */ |
279 | return get_frame_pc (prev); | |
10312cc4 AC |
280 | } |
281 | ||
97f46953 | 282 | CORE_ADDR |
7824d2f2 AC |
283 | init_frame_pc_default (int fromleaf, struct frame_info *prev) |
284 | { | |
6913c89a AC |
285 | if (fromleaf && DEPRECATED_SAVED_PC_AFTER_CALL_P ()) |
286 | return DEPRECATED_SAVED_PC_AFTER_CALL (get_next_frame (prev)); | |
75e3c1f9 | 287 | else if (get_next_frame (prev) != NULL) |
8bedc050 | 288 | return DEPRECATED_FRAME_SAVED_PC (get_next_frame (prev)); |
7824d2f2 | 289 | else |
97f46953 | 290 | return read_pc (); |
7824d2f2 AC |
291 | } |
292 | ||
a2cf933a EZ |
293 | void |
294 | default_elf_make_msymbol_special (asymbol *sym, struct minimal_symbol *msym) | |
295 | { | |
296 | return; | |
297 | } | |
298 | ||
299 | void | |
300 | default_coff_make_msymbol_special (int val, struct minimal_symbol *msym) | |
301 | { | |
302 | return; | |
303 | } | |
304 | ||
01fb7433 AC |
305 | int |
306 | cannot_register_not (int regnum) | |
307 | { | |
308 | return 0; | |
309 | } | |
39d4ef09 AC |
310 | |
311 | /* Legacy version of target_virtual_frame_pointer(). Assumes that | |
0ba6dca9 AC |
312 | there is an DEPRECATED_FP_REGNUM and that it is the same, cooked or |
313 | raw. */ | |
39d4ef09 AC |
314 | |
315 | void | |
316 | legacy_virtual_frame_pointer (CORE_ADDR pc, | |
317 | int *frame_regnum, | |
318 | LONGEST *frame_offset) | |
319 | { | |
20bcf01c AC |
320 | /* FIXME: cagney/2002-09-13: This code is used when identifying the |
321 | frame pointer of the current PC. It is assuming that a single | |
322 | register and an offset can determine this. I think it should | |
323 | instead generate a byte code expression as that would work better | |
324 | with things like Dwarf2's CFI. */ | |
0ba6dca9 AC |
325 | if (DEPRECATED_FP_REGNUM >= 0 && DEPRECATED_FP_REGNUM < NUM_REGS) |
326 | *frame_regnum = DEPRECATED_FP_REGNUM; | |
20bcf01c AC |
327 | else if (SP_REGNUM >= 0 && SP_REGNUM < NUM_REGS) |
328 | *frame_regnum = SP_REGNUM; | |
329 | else | |
330 | /* Should this be an internal error? I guess so, it is reflecting | |
331 | an architectural limitation in the current design. */ | |
332 | internal_error (__FILE__, __LINE__, "No virtual frame pointer available"); | |
39d4ef09 AC |
333 | *frame_offset = 0; |
334 | } | |
46cd78fb | 335 | |
b2e75d78 AC |
336 | /* Assume the world is sane, every register's virtual and real size |
337 | is identical. */ | |
46cd78fb AC |
338 | |
339 | int | |
b2e75d78 | 340 | generic_register_size (int regnum) |
46cd78fb AC |
341 | { |
342 | gdb_assert (regnum >= 0 && regnum < NUM_REGS + NUM_PSEUDO_REGS); | |
35cac7cf AC |
343 | if (gdbarch_register_type_p (current_gdbarch)) |
344 | return TYPE_LENGTH (gdbarch_register_type (current_gdbarch, regnum)); | |
345 | else | |
346 | /* FIXME: cagney/2003-03-01: Once all architectures implement | |
347 | gdbarch_register_type(), this entire function can go away. It | |
348 | is made obsolete by register_size(). */ | |
349 | return TYPE_LENGTH (REGISTER_VIRTUAL_TYPE (regnum)); /* OK */ | |
ce29138a MS |
350 | } |
351 | ||
a7e3c2ad AC |
352 | /* Assume all registers are adjacent. */ |
353 | ||
354 | int | |
355 | generic_register_byte (int regnum) | |
356 | { | |
357 | int byte; | |
358 | int i; | |
359 | gdb_assert (regnum >= 0 && regnum < NUM_REGS + NUM_PSEUDO_REGS); | |
360 | byte = 0; | |
361 | for (i = 0; i < regnum; i++) | |
362 | { | |
0aa7e1aa | 363 | byte += generic_register_size (i); |
a7e3c2ad AC |
364 | } |
365 | return byte; | |
366 | } | |
367 | ||
d7bd68ca AC |
368 | \f |
369 | int | |
370 | legacy_pc_in_sigtramp (CORE_ADDR pc, char *name) | |
371 | { | |
db54fef4 CV |
372 | #if !defined (IN_SIGTRAMP) |
373 | if (SIGTRAMP_START_P ()) | |
374 | return (pc) >= SIGTRAMP_START (pc) && (pc) < SIGTRAMP_END (pc); | |
375 | else | |
376 | return name && strcmp ("_sigtramp", name) == 0; | |
377 | #else | |
378 | return IN_SIGTRAMP (pc, name); | |
379 | #endif | |
d7bd68ca AC |
380 | } |
381 | ||
13d01224 | 382 | int |
ff2e87ac | 383 | legacy_convert_register_p (int regnum, struct type *type) |
13d01224 | 384 | { |
781a750d | 385 | return DEPRECATED_REGISTER_CONVERTIBLE (regnum); |
13d01224 AC |
386 | } |
387 | ||
388 | void | |
ff2e87ac AC |
389 | legacy_register_to_value (struct frame_info *frame, int regnum, |
390 | struct type *type, void *to) | |
13d01224 | 391 | { |
ff2e87ac AC |
392 | char from[MAX_REGISTER_SIZE]; |
393 | frame_read_register (frame, regnum, from); | |
781a750d | 394 | DEPRECATED_REGISTER_CONVERT_TO_VIRTUAL (regnum, type, from, to); |
13d01224 AC |
395 | } |
396 | ||
397 | void | |
ff2e87ac AC |
398 | legacy_value_to_register (struct frame_info *frame, int regnum, |
399 | struct type *type, const void *tmp) | |
13d01224 | 400 | { |
ff2e87ac AC |
401 | char to[MAX_REGISTER_SIZE]; |
402 | char *from = alloca (TYPE_LENGTH (type)); | |
403 | memcpy (from, from, TYPE_LENGTH (type)); | |
781a750d | 404 | DEPRECATED_REGISTER_CONVERT_TO_RAW (type, regnum, from, to); |
ff2e87ac | 405 | put_frame_register (frame, regnum, to); |
13d01224 AC |
406 | } |
407 | ||
01fb7433 | 408 | \f |
b4a20239 AC |
409 | /* Functions to manipulate the endianness of the target. */ |
410 | ||
1ba607ad | 411 | /* ``target_byte_order'' is only used when non- multi-arch. |
afe64c1a AC |
412 | Multi-arch targets obtain the current byte order using the |
413 | TARGET_BYTE_ORDER gdbarch method. | |
414 | ||
415 | The choice of initial value is entirely arbitrary. During startup, | |
416 | the function initialize_current_architecture() updates this value | |
417 | based on default byte-order information extracted from BFD. */ | |
418 | int target_byte_order = BFD_ENDIAN_BIG; | |
b4a20239 AC |
419 | int target_byte_order_auto = 1; |
420 | ||
53904c9e AC |
421 | static const char endian_big[] = "big"; |
422 | static const char endian_little[] = "little"; | |
423 | static const char endian_auto[] = "auto"; | |
424 | static const char *endian_enum[] = | |
b4a20239 AC |
425 | { |
426 | endian_big, | |
427 | endian_little, | |
428 | endian_auto, | |
429 | NULL, | |
430 | }; | |
53904c9e | 431 | static const char *set_endian_string; |
b4a20239 AC |
432 | |
433 | /* Called by ``show endian''. */ | |
434 | ||
435 | static void | |
436 | show_endian (char *args, int from_tty) | |
437 | { | |
438 | if (TARGET_BYTE_ORDER_AUTO) | |
439 | printf_unfiltered ("The target endianness is set automatically (currently %s endian)\n", | |
d7449b42 | 440 | (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG ? "big" : "little")); |
b4a20239 AC |
441 | else |
442 | printf_unfiltered ("The target is assumed to be %s endian\n", | |
d7449b42 | 443 | (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG ? "big" : "little")); |
b4a20239 AC |
444 | } |
445 | ||
446 | static void | |
447 | set_endian (char *ignore_args, int from_tty, struct cmd_list_element *c) | |
448 | { | |
3fd3d7d2 | 449 | if (set_endian_string == endian_auto) |
b4a20239 AC |
450 | { |
451 | target_byte_order_auto = 1; | |
452 | } | |
453 | else if (set_endian_string == endian_little) | |
454 | { | |
b4a20239 AC |
455 | target_byte_order_auto = 0; |
456 | if (GDB_MULTI_ARCH) | |
457 | { | |
458 | struct gdbarch_info info; | |
fb6ecb0f | 459 | gdbarch_info_init (&info); |
778eb05e | 460 | info.byte_order = BFD_ENDIAN_LITTLE; |
16f33e29 AC |
461 | if (! gdbarch_update_p (info)) |
462 | { | |
463 | printf_unfiltered ("Little endian target not supported by GDB\n"); | |
464 | } | |
b4a20239 | 465 | } |
1ba607ad AC |
466 | else |
467 | { | |
778eb05e | 468 | target_byte_order = BFD_ENDIAN_LITTLE; |
1ba607ad | 469 | } |
b4a20239 AC |
470 | } |
471 | else if (set_endian_string == endian_big) | |
472 | { | |
b4a20239 AC |
473 | target_byte_order_auto = 0; |
474 | if (GDB_MULTI_ARCH) | |
475 | { | |
476 | struct gdbarch_info info; | |
fb6ecb0f | 477 | gdbarch_info_init (&info); |
d7449b42 | 478 | info.byte_order = BFD_ENDIAN_BIG; |
16f33e29 AC |
479 | if (! gdbarch_update_p (info)) |
480 | { | |
481 | printf_unfiltered ("Big endian target not supported by GDB\n"); | |
482 | } | |
b4a20239 | 483 | } |
1ba607ad AC |
484 | else |
485 | { | |
d7449b42 | 486 | target_byte_order = BFD_ENDIAN_BIG; |
1ba607ad | 487 | } |
b4a20239 AC |
488 | } |
489 | else | |
8e65ff28 AC |
490 | internal_error (__FILE__, __LINE__, |
491 | "set_endian: bad value"); | |
b4a20239 AC |
492 | show_endian (NULL, from_tty); |
493 | } | |
494 | ||
495 | /* Set the endianness from a BFD. */ | |
496 | ||
497 | static void | |
498 | set_endian_from_file (bfd *abfd) | |
499 | { | |
3fd3d7d2 | 500 | int want; |
1ba607ad | 501 | if (GDB_MULTI_ARCH) |
8e65ff28 AC |
502 | internal_error (__FILE__, __LINE__, |
503 | "set_endian_from_file: not for multi-arch"); | |
3fd3d7d2 AC |
504 | if (bfd_big_endian (abfd)) |
505 | want = BFD_ENDIAN_BIG; | |
b4a20239 | 506 | else |
3fd3d7d2 AC |
507 | want = BFD_ENDIAN_LITTLE; |
508 | if (TARGET_BYTE_ORDER_AUTO) | |
509 | target_byte_order = want; | |
510 | else if (TARGET_BYTE_ORDER != want) | |
511 | warning ("%s endian file does not match %s endian target.", | |
512 | want == BFD_ENDIAN_BIG ? "big" : "little", | |
513 | TARGET_BYTE_ORDER == BFD_ENDIAN_BIG ? "big" : "little"); | |
b4a20239 AC |
514 | } |
515 | ||
516 | ||
517 | /* Functions to manipulate the architecture of the target */ | |
518 | ||
519 | enum set_arch { set_arch_auto, set_arch_manual }; | |
520 | ||
521 | int target_architecture_auto = 1; | |
522 | ||
53904c9e | 523 | const char *set_architecture_string; |
b4a20239 AC |
524 | |
525 | /* Old way of changing the current architecture. */ | |
526 | ||
527 | extern const struct bfd_arch_info bfd_default_arch_struct; | |
528 | const struct bfd_arch_info *target_architecture = &bfd_default_arch_struct; | |
529 | int (*target_architecture_hook) (const struct bfd_arch_info *ap); | |
530 | ||
531 | static int | |
532 | arch_ok (const struct bfd_arch_info *arch) | |
533 | { | |
534 | if (GDB_MULTI_ARCH) | |
8e65ff28 AC |
535 | internal_error (__FILE__, __LINE__, |
536 | "arch_ok: not multi-arched"); | |
b4a20239 AC |
537 | /* Should be performing the more basic check that the binary is |
538 | compatible with GDB. */ | |
539 | /* Check with the target that the architecture is valid. */ | |
540 | return (target_architecture_hook == NULL | |
541 | || target_architecture_hook (arch)); | |
542 | } | |
543 | ||
544 | static void | |
545 | set_arch (const struct bfd_arch_info *arch, | |
546 | enum set_arch type) | |
547 | { | |
548 | if (GDB_MULTI_ARCH) | |
8e65ff28 AC |
549 | internal_error (__FILE__, __LINE__, |
550 | "set_arch: not multi-arched"); | |
b4a20239 AC |
551 | switch (type) |
552 | { | |
553 | case set_arch_auto: | |
554 | if (!arch_ok (arch)) | |
555 | warning ("Target may not support %s architecture", | |
556 | arch->printable_name); | |
557 | target_architecture = arch; | |
558 | break; | |
559 | case set_arch_manual: | |
560 | if (!arch_ok (arch)) | |
561 | { | |
562 | printf_unfiltered ("Target does not support `%s' architecture.\n", | |
563 | arch->printable_name); | |
564 | } | |
565 | else | |
566 | { | |
567 | target_architecture_auto = 0; | |
568 | target_architecture = arch; | |
569 | } | |
570 | break; | |
571 | } | |
572 | if (gdbarch_debug) | |
4b9b3959 | 573 | gdbarch_dump (current_gdbarch, gdb_stdlog); |
b4a20239 AC |
574 | } |
575 | ||
576 | /* Set the architecture from arch/machine (deprecated) */ | |
577 | ||
578 | void | |
579 | set_architecture_from_arch_mach (enum bfd_architecture arch, | |
580 | unsigned long mach) | |
581 | { | |
582 | const struct bfd_arch_info *wanted = bfd_lookup_arch (arch, mach); | |
583 | if (GDB_MULTI_ARCH) | |
8e65ff28 AC |
584 | internal_error (__FILE__, __LINE__, |
585 | "set_architecture_from_arch_mach: not multi-arched"); | |
b4a20239 AC |
586 | if (wanted != NULL) |
587 | set_arch (wanted, set_arch_manual); | |
588 | else | |
8e65ff28 AC |
589 | internal_error (__FILE__, __LINE__, |
590 | "gdbarch: hardwired architecture/machine not recognized"); | |
b4a20239 AC |
591 | } |
592 | ||
593 | /* Set the architecture from a BFD (deprecated) */ | |
594 | ||
595 | static void | |
596 | set_architecture_from_file (bfd *abfd) | |
597 | { | |
598 | const struct bfd_arch_info *wanted = bfd_get_arch_info (abfd); | |
599 | if (GDB_MULTI_ARCH) | |
8e65ff28 AC |
600 | internal_error (__FILE__, __LINE__, |
601 | "set_architecture_from_file: not multi-arched"); | |
b4a20239 AC |
602 | if (target_architecture_auto) |
603 | { | |
604 | set_arch (wanted, set_arch_auto); | |
605 | } | |
606 | else if (wanted != target_architecture) | |
607 | { | |
608 | warning ("%s architecture file may be incompatible with %s target.", | |
609 | wanted->printable_name, | |
610 | target_architecture->printable_name); | |
611 | } | |
612 | } | |
613 | ||
614 | ||
615 | /* Called if the user enters ``show architecture'' without an | |
616 | argument. */ | |
617 | ||
618 | static void | |
619 | show_architecture (char *args, int from_tty) | |
620 | { | |
621 | const char *arch; | |
622 | arch = TARGET_ARCHITECTURE->printable_name; | |
623 | if (target_architecture_auto) | |
624 | printf_filtered ("The target architecture is set automatically (currently %s)\n", arch); | |
625 | else | |
626 | printf_filtered ("The target architecture is assumed to be %s\n", arch); | |
627 | } | |
628 | ||
629 | ||
630 | /* Called if the user enters ``set architecture'' with or without an | |
631 | argument. */ | |
632 | ||
633 | static void | |
634 | set_architecture (char *ignore_args, int from_tty, struct cmd_list_element *c) | |
635 | { | |
636 | if (strcmp (set_architecture_string, "auto") == 0) | |
637 | { | |
638 | target_architecture_auto = 1; | |
639 | } | |
640 | else if (GDB_MULTI_ARCH) | |
641 | { | |
642 | struct gdbarch_info info; | |
fb6ecb0f | 643 | gdbarch_info_init (&info); |
b4a20239 AC |
644 | info.bfd_arch_info = bfd_scan_arch (set_architecture_string); |
645 | if (info.bfd_arch_info == NULL) | |
8e65ff28 AC |
646 | internal_error (__FILE__, __LINE__, |
647 | "set_architecture: bfd_scan_arch failed"); | |
16f33e29 | 648 | if (gdbarch_update_p (info)) |
b4a20239 AC |
649 | target_architecture_auto = 0; |
650 | else | |
ec3d358c | 651 | printf_unfiltered ("Architecture `%s' not recognized.\n", |
b4a20239 AC |
652 | set_architecture_string); |
653 | } | |
654 | else | |
655 | { | |
656 | const struct bfd_arch_info *arch | |
657 | = bfd_scan_arch (set_architecture_string); | |
658 | if (arch == NULL) | |
8e65ff28 AC |
659 | internal_error (__FILE__, __LINE__, |
660 | "set_architecture: bfd_scan_arch failed"); | |
b4a20239 AC |
661 | set_arch (arch, set_arch_manual); |
662 | } | |
663 | show_architecture (NULL, from_tty); | |
664 | } | |
665 | ||
b7d6b182 | 666 | /* Set the dynamic target-system-dependent parameters (architecture, |
b4a20239 AC |
667 | byte-order) using information found in the BFD */ |
668 | ||
669 | void | |
fba45db2 | 670 | set_gdbarch_from_file (bfd *abfd) |
b4a20239 AC |
671 | { |
672 | if (GDB_MULTI_ARCH) | |
673 | { | |
674 | struct gdbarch_info info; | |
fb6ecb0f | 675 | gdbarch_info_init (&info); |
b4a20239 | 676 | info.abfd = abfd; |
16f33e29 | 677 | if (! gdbarch_update_p (info)) |
ec3d358c | 678 | error ("Architecture of file not recognized.\n"); |
b4a20239 AC |
679 | } |
680 | else | |
681 | { | |
682 | set_architecture_from_file (abfd); | |
683 | set_endian_from_file (abfd); | |
684 | } | |
685 | } | |
686 | ||
687 | /* Initialize the current architecture. Update the ``set | |
688 | architecture'' command so that it specifies a list of valid | |
689 | architectures. */ | |
690 | ||
1ba607ad AC |
691 | #ifdef DEFAULT_BFD_ARCH |
692 | extern const bfd_arch_info_type DEFAULT_BFD_ARCH; | |
693 | static const bfd_arch_info_type *default_bfd_arch = &DEFAULT_BFD_ARCH; | |
694 | #else | |
4b9b3959 | 695 | static const bfd_arch_info_type *default_bfd_arch; |
1ba607ad AC |
696 | #endif |
697 | ||
698 | #ifdef DEFAULT_BFD_VEC | |
699 | extern const bfd_target DEFAULT_BFD_VEC; | |
700 | static const bfd_target *default_bfd_vec = &DEFAULT_BFD_VEC; | |
701 | #else | |
702 | static const bfd_target *default_bfd_vec; | |
703 | #endif | |
704 | ||
b4a20239 AC |
705 | void |
706 | initialize_current_architecture (void) | |
707 | { | |
708 | const char **arches = gdbarch_printable_names (); | |
b4a20239 | 709 | |
1ba607ad AC |
710 | /* determine a default architecture and byte order. */ |
711 | struct gdbarch_info info; | |
fb6ecb0f | 712 | gdbarch_info_init (&info); |
1ba607ad AC |
713 | |
714 | /* Find a default architecture. */ | |
715 | if (info.bfd_arch_info == NULL | |
716 | && default_bfd_arch != NULL) | |
717 | info.bfd_arch_info = default_bfd_arch; | |
718 | if (info.bfd_arch_info == NULL) | |
b4a20239 | 719 | { |
1ba607ad AC |
720 | /* Choose the architecture by taking the first one |
721 | alphabetically. */ | |
722 | const char *chosen = arches[0]; | |
b4a20239 | 723 | const char **arch; |
b4a20239 AC |
724 | for (arch = arches; *arch != NULL; arch++) |
725 | { | |
b4a20239 AC |
726 | if (strcmp (*arch, chosen) < 0) |
727 | chosen = *arch; | |
728 | } | |
729 | if (chosen == NULL) | |
8e65ff28 AC |
730 | internal_error (__FILE__, __LINE__, |
731 | "initialize_current_architecture: No arch"); | |
b4a20239 AC |
732 | info.bfd_arch_info = bfd_scan_arch (chosen); |
733 | if (info.bfd_arch_info == NULL) | |
8e65ff28 AC |
734 | internal_error (__FILE__, __LINE__, |
735 | "initialize_current_architecture: Arch not found"); | |
1ba607ad AC |
736 | } |
737 | ||
afe64c1a | 738 | /* Take several guesses at a byte order. */ |
428721aa | 739 | if (info.byte_order == BFD_ENDIAN_UNKNOWN |
1ba607ad AC |
740 | && default_bfd_vec != NULL) |
741 | { | |
742 | /* Extract BFD's default vector's byte order. */ | |
743 | switch (default_bfd_vec->byteorder) | |
744 | { | |
745 | case BFD_ENDIAN_BIG: | |
d7449b42 | 746 | info.byte_order = BFD_ENDIAN_BIG; |
1ba607ad AC |
747 | break; |
748 | case BFD_ENDIAN_LITTLE: | |
778eb05e | 749 | info.byte_order = BFD_ENDIAN_LITTLE; |
1ba607ad AC |
750 | break; |
751 | default: | |
752 | break; | |
753 | } | |
754 | } | |
428721aa | 755 | if (info.byte_order == BFD_ENDIAN_UNKNOWN) |
1ba607ad AC |
756 | { |
757 | /* look for ``*el-*'' in the target name. */ | |
758 | const char *chp; | |
759 | chp = strchr (target_name, '-'); | |
760 | if (chp != NULL | |
761 | && chp - 2 >= target_name | |
762 | && strncmp (chp - 2, "el", 2) == 0) | |
778eb05e | 763 | info.byte_order = BFD_ENDIAN_LITTLE; |
1ba607ad | 764 | } |
428721aa | 765 | if (info.byte_order == BFD_ENDIAN_UNKNOWN) |
1ba607ad AC |
766 | { |
767 | /* Wire it to big-endian!!! */ | |
d7449b42 | 768 | info.byte_order = BFD_ENDIAN_BIG; |
1ba607ad AC |
769 | } |
770 | ||
771 | if (GDB_MULTI_ARCH) | |
772 | { | |
16f33e29 AC |
773 | if (! gdbarch_update_p (info)) |
774 | { | |
8e65ff28 AC |
775 | internal_error (__FILE__, __LINE__, |
776 | "initialize_current_architecture: Selection of initial architecture failed"); | |
16f33e29 | 777 | } |
b4a20239 | 778 | } |
ceaa8edf | 779 | else |
afe64c1a AC |
780 | { |
781 | /* If the multi-arch logic comes up with a byte-order (from BFD) | |
782 | use it for the non-multi-arch case. */ | |
783 | if (info.byte_order != BFD_ENDIAN_UNKNOWN) | |
784 | target_byte_order = info.byte_order; | |
785 | initialize_non_multiarch (); | |
786 | } | |
b4a20239 | 787 | |
1ba607ad AC |
788 | /* Create the ``set architecture'' command appending ``auto'' to the |
789 | list of architectures. */ | |
b4a20239 AC |
790 | { |
791 | struct cmd_list_element *c; | |
792 | /* Append ``auto''. */ | |
793 | int nr; | |
794 | for (nr = 0; arches[nr] != NULL; nr++); | |
795 | arches = xrealloc (arches, sizeof (char*) * (nr + 2)); | |
796 | arches[nr + 0] = "auto"; | |
797 | arches[nr + 1] = NULL; | |
798 | /* FIXME: add_set_enum_cmd() uses an array of ``char *'' instead | |
799 | of ``const char *''. We just happen to know that the casts are | |
800 | safe. */ | |
801 | c = add_set_enum_cmd ("architecture", class_support, | |
53904c9e | 802 | arches, &set_architecture_string, |
b4a20239 AC |
803 | "Set architecture of target.", |
804 | &setlist); | |
9f60d481 | 805 | set_cmd_sfunc (c, set_architecture); |
b4a20239 AC |
806 | add_alias_cmd ("processor", "architecture", class_support, 1, &setlist); |
807 | /* Don't use set_from_show - need to print both auto/manual and | |
808 | current setting. */ | |
809 | add_cmd ("architecture", class_support, show_architecture, | |
810 | "Show the current target architecture", &showlist); | |
b4a20239 AC |
811 | } |
812 | } | |
813 | ||
814 | ||
fb6ecb0f AC |
815 | /* Initialize a gdbarch info to values that will be automatically |
816 | overridden. Note: Originally, this ``struct info'' was initialized | |
817 | using memset(0). Unfortunatly, that ran into problems, namely | |
818 | BFD_ENDIAN_BIG is zero. An explicit initialization function that | |
819 | can explicitly set each field to a well defined value is used. */ | |
820 | ||
821 | void | |
822 | gdbarch_info_init (struct gdbarch_info *info) | |
823 | { | |
824 | memset (info, 0, sizeof (struct gdbarch_info)); | |
428721aa | 825 | info->byte_order = BFD_ENDIAN_UNKNOWN; |
4be87837 | 826 | info->osabi = GDB_OSABI_UNINITIALIZED; |
fb6ecb0f AC |
827 | } |
828 | ||
c0e8c252 AC |
829 | /* */ |
830 | ||
a78f21af | 831 | extern initialize_file_ftype _initialize_gdbarch_utils; /* -Wmissing-prototypes */ |
c0e8c252 AC |
832 | |
833 | void | |
b4a20239 | 834 | _initialize_gdbarch_utils (void) |
c0e8c252 | 835 | { |
b4a20239 AC |
836 | struct cmd_list_element *c; |
837 | c = add_set_enum_cmd ("endian", class_support, | |
838 | endian_enum, &set_endian_string, | |
839 | "Set endianness of target.", | |
840 | &setlist); | |
9f60d481 | 841 | set_cmd_sfunc (c, set_endian); |
b4a20239 AC |
842 | /* Don't use set_from_show - need to print both auto/manual and |
843 | current setting. */ | |
844 | add_cmd ("endian", class_support, show_endian, | |
845 | "Show the current byte-order", &showlist); | |
c0e8c252 | 846 | } |