Commit | Line | Data |
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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 | ||
4182591f AC |
75 | int |
76 | legacy_register_sim_regno (int regnum) | |
77 | { | |
78 | /* Only makes sense to supply raw registers. */ | |
79 | gdb_assert (regnum >= 0 && regnum < NUM_REGS); | |
80 | /* NOTE: cagney/2002-05-13: The old code did it this way and it is | |
81 | suspected that some GDB/SIM combinations may rely on this | |
82 | behavour. The default should be one2one_register_sim_regno | |
83 | (below). */ | |
84 | if (REGISTER_NAME (regnum) != NULL | |
85 | && REGISTER_NAME (regnum)[0] != '\0') | |
86 | return regnum; | |
87 | else | |
88 | return LEGACY_SIM_REGNO_IGNORE; | |
89 | } | |
90 | ||
c0e8c252 AC |
91 | int |
92 | generic_frameless_function_invocation_not (struct frame_info *fi) | |
93 | { | |
94 | return 0; | |
95 | } | |
96 | ||
71a9f22e JB |
97 | int |
98 | generic_return_value_on_stack_not (struct type *type) | |
99 | { | |
100 | return 0; | |
101 | } | |
102 | ||
bdcd319a CV |
103 | CORE_ADDR |
104 | generic_skip_trampoline_code (CORE_ADDR pc) | |
105 | { | |
106 | return 0; | |
107 | } | |
108 | ||
68e9cc94 CV |
109 | int |
110 | generic_in_solib_call_trampoline (CORE_ADDR pc, char *name) | |
111 | { | |
112 | return 0; | |
113 | } | |
114 | ||
d50355b6 MS |
115 | int |
116 | generic_in_solib_return_trampoline (CORE_ADDR pc, char *name) | |
117 | { | |
118 | return 0; | |
119 | } | |
120 | ||
c12260ac CV |
121 | int |
122 | generic_in_function_epilogue_p (struct gdbarch *gdbarch, CORE_ADDR pc) | |
123 | { | |
124 | return 0; | |
125 | } | |
126 | ||
fa88f677 | 127 | const char * |
c0e8c252 AC |
128 | legacy_register_name (int i) |
129 | { | |
130 | #ifdef REGISTER_NAMES | |
131 | static char *names[] = REGISTER_NAMES; | |
132 | if (i < 0 || i >= (sizeof (names) / sizeof (*names))) | |
133 | return NULL; | |
134 | else | |
135 | return names[i]; | |
136 | #else | |
8e65ff28 AC |
137 | internal_error (__FILE__, __LINE__, |
138 | "legacy_register_name: called."); | |
c0e8c252 AC |
139 | return NULL; |
140 | #endif | |
141 | } | |
142 | ||
143 | #if defined (CALL_DUMMY) | |
144 | LONGEST legacy_call_dummy_words[] = CALL_DUMMY; | |
145 | #else | |
146 | LONGEST legacy_call_dummy_words[1]; | |
147 | #endif | |
148 | int legacy_sizeof_call_dummy_words = sizeof (legacy_call_dummy_words); | |
149 | ||
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 | ||
dad41f9a AC |
160 | int |
161 | generic_prologue_frameless_p (CORE_ADDR ip) | |
162 | { | |
dad41f9a | 163 | return ip == SKIP_PROLOGUE (ip); |
dad41f9a AC |
164 | } |
165 | ||
2bf0cb65 EZ |
166 | /* New/multi-arched targets should use the correct gdbarch field |
167 | instead of using this global pointer. */ | |
168 | int | |
169 | legacy_print_insn (bfd_vma vma, disassemble_info *info) | |
170 | { | |
d7a27068 | 171 | return (*deprecated_tm_print_insn) (vma, info); |
2bf0cb65 | 172 | } |
dad41f9a | 173 | |
3339cf8b AC |
174 | /* Helper functions for INNER_THAN */ |
175 | ||
176 | int | |
fba45db2 | 177 | core_addr_lessthan (CORE_ADDR lhs, CORE_ADDR rhs) |
3339cf8b AC |
178 | { |
179 | return (lhs < rhs); | |
180 | } | |
181 | ||
182 | int | |
fba45db2 | 183 | core_addr_greaterthan (CORE_ADDR lhs, CORE_ADDR rhs) |
3339cf8b AC |
184 | { |
185 | return (lhs > rhs); | |
186 | } | |
187 | ||
188 | ||
f0d4cc9e AC |
189 | /* Helper functions for TARGET_{FLOAT,DOUBLE}_FORMAT */ |
190 | ||
191 | const struct floatformat * | |
192 | default_float_format (struct gdbarch *gdbarch) | |
193 | { | |
194 | #if GDB_MULTI_ARCH | |
195 | int byte_order = gdbarch_byte_order (gdbarch); | |
196 | #else | |
197 | int byte_order = TARGET_BYTE_ORDER; | |
198 | #endif | |
199 | switch (byte_order) | |
200 | { | |
d7449b42 | 201 | case BFD_ENDIAN_BIG: |
f0d4cc9e | 202 | return &floatformat_ieee_single_big; |
778eb05e | 203 | case BFD_ENDIAN_LITTLE: |
f0d4cc9e AC |
204 | return &floatformat_ieee_single_little; |
205 | default: | |
8e65ff28 AC |
206 | internal_error (__FILE__, __LINE__, |
207 | "default_float_format: bad byte order"); | |
f0d4cc9e AC |
208 | } |
209 | } | |
210 | ||
211 | ||
212 | const struct floatformat * | |
213 | default_double_format (struct gdbarch *gdbarch) | |
214 | { | |
215 | #if GDB_MULTI_ARCH | |
216 | int byte_order = gdbarch_byte_order (gdbarch); | |
217 | #else | |
218 | int byte_order = TARGET_BYTE_ORDER; | |
219 | #endif | |
220 | switch (byte_order) | |
221 | { | |
d7449b42 | 222 | case BFD_ENDIAN_BIG: |
f0d4cc9e | 223 | return &floatformat_ieee_double_big; |
778eb05e | 224 | case BFD_ENDIAN_LITTLE: |
f0d4cc9e AC |
225 | return &floatformat_ieee_double_little; |
226 | default: | |
8e65ff28 AC |
227 | internal_error (__FILE__, __LINE__, |
228 | "default_double_format: bad byte order"); | |
f0d4cc9e AC |
229 | } |
230 | } | |
231 | ||
193e3b1a AC |
232 | /* Misc helper functions for targets. */ |
233 | ||
193e3b1a | 234 | int |
fba45db2 | 235 | generic_register_convertible_not (int num) |
193e3b1a AC |
236 | { |
237 | return 0; | |
238 | } | |
239 | ||
b4a20239 | 240 | |
c8f9d51c JB |
241 | /* Under some ABI's that specify the `struct convention' for returning |
242 | structures by value, by the time we've returned from the function, | |
243 | the return value is sitting there in the caller's buffer, but GDB | |
244 | has no way to find the address of that buffer. | |
245 | ||
246 | On such architectures, use this function as your | |
247 | extract_struct_value_address method. When asked to a struct | |
248 | returned by value in this fashion, GDB will print a nice error | |
249 | message, instead of garbage. */ | |
250 | CORE_ADDR | |
251 | generic_cannot_extract_struct_value_address (char *dummy) | |
252 | { | |
253 | return 0; | |
254 | } | |
255 | ||
f517ea4e | 256 | CORE_ADDR |
875e1767 | 257 | core_addr_identity (CORE_ADDR addr) |
f517ea4e PS |
258 | { |
259 | return addr; | |
260 | } | |
261 | ||
88c72b7d AC |
262 | int |
263 | no_op_reg_to_regnum (int reg) | |
264 | { | |
265 | return reg; | |
266 | } | |
267 | ||
e02bc4cc DS |
268 | /* Default prepare_to_procced(). */ |
269 | int | |
270 | default_prepare_to_proceed (int select_it) | |
271 | { | |
272 | return 0; | |
273 | } | |
274 | ||
275 | /* Generic prepare_to_proceed(). This one should be suitable for most | |
276 | targets that support threads. */ | |
277 | int | |
278 | generic_prepare_to_proceed (int select_it) | |
279 | { | |
39f77062 | 280 | ptid_t wait_ptid; |
e02bc4cc DS |
281 | struct target_waitstatus wait_status; |
282 | ||
283 | /* Get the last target status returned by target_wait(). */ | |
39f77062 | 284 | get_last_target_status (&wait_ptid, &wait_status); |
e02bc4cc | 285 | |
8849f47d JL |
286 | /* Make sure we were stopped either at a breakpoint, or because |
287 | of a Ctrl-C. */ | |
e02bc4cc | 288 | if (wait_status.kind != TARGET_WAITKIND_STOPPED |
8849f47d JL |
289 | || (wait_status.value.sig != TARGET_SIGNAL_TRAP && |
290 | wait_status.value.sig != TARGET_SIGNAL_INT)) | |
e02bc4cc DS |
291 | { |
292 | return 0; | |
293 | } | |
294 | ||
39f77062 KB |
295 | if (!ptid_equal (wait_ptid, minus_one_ptid) |
296 | && !ptid_equal (inferior_ptid, wait_ptid)) | |
e02bc4cc DS |
297 | { |
298 | /* Switched over from WAIT_PID. */ | |
39f77062 | 299 | CORE_ADDR wait_pc = read_pc_pid (wait_ptid); |
e02bc4cc | 300 | |
8849f47d | 301 | if (wait_pc != read_pc ()) |
e02bc4cc DS |
302 | { |
303 | if (select_it) | |
304 | { | |
8849f47d | 305 | /* Switch back to WAIT_PID thread. */ |
39f77062 | 306 | inferior_ptid = wait_ptid; |
e02bc4cc DS |
307 | |
308 | /* FIXME: This stuff came from switch_to_thread() in | |
309 | thread.c (which should probably be a public function). */ | |
310 | flush_cached_frames (); | |
311 | registers_changed (); | |
312 | stop_pc = wait_pc; | |
0f7d239c | 313 | select_frame (get_current_frame ()); |
e02bc4cc | 314 | } |
8849f47d JL |
315 | /* We return 1 to indicate that there is a breakpoint here, |
316 | so we need to step over it before continuing to avoid | |
317 | hitting it straight away. */ | |
318 | if (breakpoint_here_p (wait_pc)) | |
319 | { | |
320 | return 1; | |
321 | } | |
e02bc4cc DS |
322 | } |
323 | } | |
324 | return 0; | |
325 | ||
326 | } | |
327 | ||
97f46953 | 328 | CORE_ADDR |
10312cc4 AC |
329 | init_frame_pc_noop (int fromleaf, struct frame_info *prev) |
330 | { | |
97f46953 AC |
331 | /* Do nothing, implies return the same PC value. */ |
332 | return get_frame_pc (prev); | |
10312cc4 AC |
333 | } |
334 | ||
97f46953 | 335 | CORE_ADDR |
7824d2f2 AC |
336 | init_frame_pc_default (int fromleaf, struct frame_info *prev) |
337 | { | |
6913c89a AC |
338 | if (fromleaf && DEPRECATED_SAVED_PC_AFTER_CALL_P ()) |
339 | return DEPRECATED_SAVED_PC_AFTER_CALL (get_next_frame (prev)); | |
75e3c1f9 | 340 | else if (get_next_frame (prev) != NULL) |
8bedc050 | 341 | return DEPRECATED_FRAME_SAVED_PC (get_next_frame (prev)); |
7824d2f2 | 342 | else |
97f46953 | 343 | return read_pc (); |
7824d2f2 AC |
344 | } |
345 | ||
a2cf933a EZ |
346 | void |
347 | default_elf_make_msymbol_special (asymbol *sym, struct minimal_symbol *msym) | |
348 | { | |
349 | return; | |
350 | } | |
351 | ||
352 | void | |
353 | default_coff_make_msymbol_special (int val, struct minimal_symbol *msym) | |
354 | { | |
355 | return; | |
356 | } | |
357 | ||
01fb7433 AC |
358 | int |
359 | cannot_register_not (int regnum) | |
360 | { | |
361 | return 0; | |
362 | } | |
39d4ef09 AC |
363 | |
364 | /* Legacy version of target_virtual_frame_pointer(). Assumes that | |
0ba6dca9 AC |
365 | there is an DEPRECATED_FP_REGNUM and that it is the same, cooked or |
366 | raw. */ | |
39d4ef09 AC |
367 | |
368 | void | |
369 | legacy_virtual_frame_pointer (CORE_ADDR pc, | |
370 | int *frame_regnum, | |
371 | LONGEST *frame_offset) | |
372 | { | |
20bcf01c AC |
373 | /* FIXME: cagney/2002-09-13: This code is used when identifying the |
374 | frame pointer of the current PC. It is assuming that a single | |
375 | register and an offset can determine this. I think it should | |
376 | instead generate a byte code expression as that would work better | |
377 | with things like Dwarf2's CFI. */ | |
0ba6dca9 AC |
378 | if (DEPRECATED_FP_REGNUM >= 0 && DEPRECATED_FP_REGNUM < NUM_REGS) |
379 | *frame_regnum = DEPRECATED_FP_REGNUM; | |
20bcf01c AC |
380 | else if (SP_REGNUM >= 0 && SP_REGNUM < NUM_REGS) |
381 | *frame_regnum = SP_REGNUM; | |
382 | else | |
383 | /* Should this be an internal error? I guess so, it is reflecting | |
384 | an architectural limitation in the current design. */ | |
385 | internal_error (__FILE__, __LINE__, "No virtual frame pointer available"); | |
39d4ef09 AC |
386 | *frame_offset = 0; |
387 | } | |
46cd78fb | 388 | |
b2e75d78 AC |
389 | /* Assume the world is sane, every register's virtual and real size |
390 | is identical. */ | |
46cd78fb AC |
391 | |
392 | int | |
b2e75d78 | 393 | generic_register_size (int regnum) |
46cd78fb AC |
394 | { |
395 | gdb_assert (regnum >= 0 && regnum < NUM_REGS + NUM_PSEUDO_REGS); | |
35cac7cf AC |
396 | if (gdbarch_register_type_p (current_gdbarch)) |
397 | return TYPE_LENGTH (gdbarch_register_type (current_gdbarch, regnum)); | |
398 | else | |
399 | /* FIXME: cagney/2003-03-01: Once all architectures implement | |
400 | gdbarch_register_type(), this entire function can go away. It | |
401 | is made obsolete by register_size(). */ | |
402 | return TYPE_LENGTH (REGISTER_VIRTUAL_TYPE (regnum)); /* OK */ | |
ce29138a MS |
403 | } |
404 | ||
a7e3c2ad AC |
405 | /* Assume all registers are adjacent. */ |
406 | ||
407 | int | |
408 | generic_register_byte (int regnum) | |
409 | { | |
410 | int byte; | |
411 | int i; | |
412 | gdb_assert (regnum >= 0 && regnum < NUM_REGS + NUM_PSEUDO_REGS); | |
413 | byte = 0; | |
414 | for (i = 0; i < regnum; i++) | |
415 | { | |
0aa7e1aa | 416 | byte += generic_register_size (i); |
a7e3c2ad AC |
417 | } |
418 | return byte; | |
419 | } | |
420 | ||
d7bd68ca AC |
421 | \f |
422 | int | |
423 | legacy_pc_in_sigtramp (CORE_ADDR pc, char *name) | |
424 | { | |
db54fef4 CV |
425 | #if !defined (IN_SIGTRAMP) |
426 | if (SIGTRAMP_START_P ()) | |
427 | return (pc) >= SIGTRAMP_START (pc) && (pc) < SIGTRAMP_END (pc); | |
428 | else | |
429 | return name && strcmp ("_sigtramp", name) == 0; | |
430 | #else | |
431 | return IN_SIGTRAMP (pc, name); | |
432 | #endif | |
d7bd68ca AC |
433 | } |
434 | ||
13d01224 AC |
435 | int |
436 | legacy_convert_register_p (int regnum) | |
437 | { | |
438 | return REGISTER_CONVERTIBLE (regnum); | |
439 | } | |
440 | ||
441 | void | |
442 | legacy_register_to_value (int regnum, struct type *type, | |
443 | char *from, char *to) | |
444 | { | |
445 | REGISTER_CONVERT_TO_VIRTUAL (regnum, type, from, to); | |
446 | } | |
447 | ||
448 | void | |
449 | legacy_value_to_register (struct type *type, int regnum, | |
450 | char *from, char *to) | |
451 | { | |
452 | REGISTER_CONVERT_TO_RAW (type, regnum, from, to); | |
453 | } | |
454 | ||
01fb7433 | 455 | \f |
b4a20239 AC |
456 | /* Functions to manipulate the endianness of the target. */ |
457 | ||
1ba607ad | 458 | /* ``target_byte_order'' is only used when non- multi-arch. |
afe64c1a AC |
459 | Multi-arch targets obtain the current byte order using the |
460 | TARGET_BYTE_ORDER gdbarch method. | |
461 | ||
462 | The choice of initial value is entirely arbitrary. During startup, | |
463 | the function initialize_current_architecture() updates this value | |
464 | based on default byte-order information extracted from BFD. */ | |
465 | int target_byte_order = BFD_ENDIAN_BIG; | |
b4a20239 AC |
466 | int target_byte_order_auto = 1; |
467 | ||
53904c9e AC |
468 | static const char endian_big[] = "big"; |
469 | static const char endian_little[] = "little"; | |
470 | static const char endian_auto[] = "auto"; | |
471 | static const char *endian_enum[] = | |
b4a20239 AC |
472 | { |
473 | endian_big, | |
474 | endian_little, | |
475 | endian_auto, | |
476 | NULL, | |
477 | }; | |
53904c9e | 478 | static const char *set_endian_string; |
b4a20239 AC |
479 | |
480 | /* Called by ``show endian''. */ | |
481 | ||
482 | static void | |
483 | show_endian (char *args, int from_tty) | |
484 | { | |
485 | if (TARGET_BYTE_ORDER_AUTO) | |
486 | printf_unfiltered ("The target endianness is set automatically (currently %s endian)\n", | |
d7449b42 | 487 | (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG ? "big" : "little")); |
b4a20239 AC |
488 | else |
489 | printf_unfiltered ("The target is assumed to be %s endian\n", | |
d7449b42 | 490 | (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG ? "big" : "little")); |
b4a20239 AC |
491 | } |
492 | ||
493 | static void | |
494 | set_endian (char *ignore_args, int from_tty, struct cmd_list_element *c) | |
495 | { | |
3fd3d7d2 | 496 | if (set_endian_string == endian_auto) |
b4a20239 AC |
497 | { |
498 | target_byte_order_auto = 1; | |
499 | } | |
500 | else if (set_endian_string == endian_little) | |
501 | { | |
b4a20239 AC |
502 | target_byte_order_auto = 0; |
503 | if (GDB_MULTI_ARCH) | |
504 | { | |
505 | struct gdbarch_info info; | |
fb6ecb0f | 506 | gdbarch_info_init (&info); |
778eb05e | 507 | info.byte_order = BFD_ENDIAN_LITTLE; |
16f33e29 AC |
508 | if (! gdbarch_update_p (info)) |
509 | { | |
510 | printf_unfiltered ("Little endian target not supported by GDB\n"); | |
511 | } | |
b4a20239 | 512 | } |
1ba607ad AC |
513 | else |
514 | { | |
778eb05e | 515 | target_byte_order = BFD_ENDIAN_LITTLE; |
1ba607ad | 516 | } |
b4a20239 AC |
517 | } |
518 | else if (set_endian_string == endian_big) | |
519 | { | |
b4a20239 AC |
520 | target_byte_order_auto = 0; |
521 | if (GDB_MULTI_ARCH) | |
522 | { | |
523 | struct gdbarch_info info; | |
fb6ecb0f | 524 | gdbarch_info_init (&info); |
d7449b42 | 525 | info.byte_order = BFD_ENDIAN_BIG; |
16f33e29 AC |
526 | if (! gdbarch_update_p (info)) |
527 | { | |
528 | printf_unfiltered ("Big endian target not supported by GDB\n"); | |
529 | } | |
b4a20239 | 530 | } |
1ba607ad AC |
531 | else |
532 | { | |
d7449b42 | 533 | target_byte_order = BFD_ENDIAN_BIG; |
1ba607ad | 534 | } |
b4a20239 AC |
535 | } |
536 | else | |
8e65ff28 AC |
537 | internal_error (__FILE__, __LINE__, |
538 | "set_endian: bad value"); | |
b4a20239 AC |
539 | show_endian (NULL, from_tty); |
540 | } | |
541 | ||
542 | /* Set the endianness from a BFD. */ | |
543 | ||
544 | static void | |
545 | set_endian_from_file (bfd *abfd) | |
546 | { | |
3fd3d7d2 | 547 | int want; |
1ba607ad | 548 | if (GDB_MULTI_ARCH) |
8e65ff28 AC |
549 | internal_error (__FILE__, __LINE__, |
550 | "set_endian_from_file: not for multi-arch"); | |
3fd3d7d2 AC |
551 | if (bfd_big_endian (abfd)) |
552 | want = BFD_ENDIAN_BIG; | |
b4a20239 | 553 | else |
3fd3d7d2 AC |
554 | want = BFD_ENDIAN_LITTLE; |
555 | if (TARGET_BYTE_ORDER_AUTO) | |
556 | target_byte_order = want; | |
557 | else if (TARGET_BYTE_ORDER != want) | |
558 | warning ("%s endian file does not match %s endian target.", | |
559 | want == BFD_ENDIAN_BIG ? "big" : "little", | |
560 | TARGET_BYTE_ORDER == BFD_ENDIAN_BIG ? "big" : "little"); | |
b4a20239 AC |
561 | } |
562 | ||
563 | ||
564 | /* Functions to manipulate the architecture of the target */ | |
565 | ||
566 | enum set_arch { set_arch_auto, set_arch_manual }; | |
567 | ||
568 | int target_architecture_auto = 1; | |
569 | ||
53904c9e | 570 | const char *set_architecture_string; |
b4a20239 AC |
571 | |
572 | /* Old way of changing the current architecture. */ | |
573 | ||
574 | extern const struct bfd_arch_info bfd_default_arch_struct; | |
575 | const struct bfd_arch_info *target_architecture = &bfd_default_arch_struct; | |
576 | int (*target_architecture_hook) (const struct bfd_arch_info *ap); | |
577 | ||
578 | static int | |
579 | arch_ok (const struct bfd_arch_info *arch) | |
580 | { | |
581 | if (GDB_MULTI_ARCH) | |
8e65ff28 AC |
582 | internal_error (__FILE__, __LINE__, |
583 | "arch_ok: not multi-arched"); | |
b4a20239 AC |
584 | /* Should be performing the more basic check that the binary is |
585 | compatible with GDB. */ | |
586 | /* Check with the target that the architecture is valid. */ | |
587 | return (target_architecture_hook == NULL | |
588 | || target_architecture_hook (arch)); | |
589 | } | |
590 | ||
591 | static void | |
592 | set_arch (const struct bfd_arch_info *arch, | |
593 | enum set_arch type) | |
594 | { | |
595 | if (GDB_MULTI_ARCH) | |
8e65ff28 AC |
596 | internal_error (__FILE__, __LINE__, |
597 | "set_arch: not multi-arched"); | |
b4a20239 AC |
598 | switch (type) |
599 | { | |
600 | case set_arch_auto: | |
601 | if (!arch_ok (arch)) | |
602 | warning ("Target may not support %s architecture", | |
603 | arch->printable_name); | |
604 | target_architecture = arch; | |
605 | break; | |
606 | case set_arch_manual: | |
607 | if (!arch_ok (arch)) | |
608 | { | |
609 | printf_unfiltered ("Target does not support `%s' architecture.\n", | |
610 | arch->printable_name); | |
611 | } | |
612 | else | |
613 | { | |
614 | target_architecture_auto = 0; | |
615 | target_architecture = arch; | |
616 | } | |
617 | break; | |
618 | } | |
619 | if (gdbarch_debug) | |
4b9b3959 | 620 | gdbarch_dump (current_gdbarch, gdb_stdlog); |
b4a20239 AC |
621 | } |
622 | ||
623 | /* Set the architecture from arch/machine (deprecated) */ | |
624 | ||
625 | void | |
626 | set_architecture_from_arch_mach (enum bfd_architecture arch, | |
627 | unsigned long mach) | |
628 | { | |
629 | const struct bfd_arch_info *wanted = bfd_lookup_arch (arch, mach); | |
630 | if (GDB_MULTI_ARCH) | |
8e65ff28 AC |
631 | internal_error (__FILE__, __LINE__, |
632 | "set_architecture_from_arch_mach: not multi-arched"); | |
b4a20239 AC |
633 | if (wanted != NULL) |
634 | set_arch (wanted, set_arch_manual); | |
635 | else | |
8e65ff28 AC |
636 | internal_error (__FILE__, __LINE__, |
637 | "gdbarch: hardwired architecture/machine not recognized"); | |
b4a20239 AC |
638 | } |
639 | ||
640 | /* Set the architecture from a BFD (deprecated) */ | |
641 | ||
642 | static void | |
643 | set_architecture_from_file (bfd *abfd) | |
644 | { | |
645 | const struct bfd_arch_info *wanted = bfd_get_arch_info (abfd); | |
646 | if (GDB_MULTI_ARCH) | |
8e65ff28 AC |
647 | internal_error (__FILE__, __LINE__, |
648 | "set_architecture_from_file: not multi-arched"); | |
b4a20239 AC |
649 | if (target_architecture_auto) |
650 | { | |
651 | set_arch (wanted, set_arch_auto); | |
652 | } | |
653 | else if (wanted != target_architecture) | |
654 | { | |
655 | warning ("%s architecture file may be incompatible with %s target.", | |
656 | wanted->printable_name, | |
657 | target_architecture->printable_name); | |
658 | } | |
659 | } | |
660 | ||
661 | ||
662 | /* Called if the user enters ``show architecture'' without an | |
663 | argument. */ | |
664 | ||
665 | static void | |
666 | show_architecture (char *args, int from_tty) | |
667 | { | |
668 | const char *arch; | |
669 | arch = TARGET_ARCHITECTURE->printable_name; | |
670 | if (target_architecture_auto) | |
671 | printf_filtered ("The target architecture is set automatically (currently %s)\n", arch); | |
672 | else | |
673 | printf_filtered ("The target architecture is assumed to be %s\n", arch); | |
674 | } | |
675 | ||
676 | ||
677 | /* Called if the user enters ``set architecture'' with or without an | |
678 | argument. */ | |
679 | ||
680 | static void | |
681 | set_architecture (char *ignore_args, int from_tty, struct cmd_list_element *c) | |
682 | { | |
683 | if (strcmp (set_architecture_string, "auto") == 0) | |
684 | { | |
685 | target_architecture_auto = 1; | |
686 | } | |
687 | else if (GDB_MULTI_ARCH) | |
688 | { | |
689 | struct gdbarch_info info; | |
fb6ecb0f | 690 | gdbarch_info_init (&info); |
b4a20239 AC |
691 | info.bfd_arch_info = bfd_scan_arch (set_architecture_string); |
692 | if (info.bfd_arch_info == NULL) | |
8e65ff28 AC |
693 | internal_error (__FILE__, __LINE__, |
694 | "set_architecture: bfd_scan_arch failed"); | |
16f33e29 | 695 | if (gdbarch_update_p (info)) |
b4a20239 AC |
696 | target_architecture_auto = 0; |
697 | else | |
ec3d358c | 698 | printf_unfiltered ("Architecture `%s' not recognized.\n", |
b4a20239 AC |
699 | set_architecture_string); |
700 | } | |
701 | else | |
702 | { | |
703 | const struct bfd_arch_info *arch | |
704 | = bfd_scan_arch (set_architecture_string); | |
705 | if (arch == NULL) | |
8e65ff28 AC |
706 | internal_error (__FILE__, __LINE__, |
707 | "set_architecture: bfd_scan_arch failed"); | |
b4a20239 AC |
708 | set_arch (arch, set_arch_manual); |
709 | } | |
710 | show_architecture (NULL, from_tty); | |
711 | } | |
712 | ||
b7d6b182 | 713 | /* Set the dynamic target-system-dependent parameters (architecture, |
b4a20239 AC |
714 | byte-order) using information found in the BFD */ |
715 | ||
716 | void | |
fba45db2 | 717 | set_gdbarch_from_file (bfd *abfd) |
b4a20239 AC |
718 | { |
719 | if (GDB_MULTI_ARCH) | |
720 | { | |
721 | struct gdbarch_info info; | |
fb6ecb0f | 722 | gdbarch_info_init (&info); |
b4a20239 | 723 | info.abfd = abfd; |
16f33e29 | 724 | if (! gdbarch_update_p (info)) |
ec3d358c | 725 | error ("Architecture of file not recognized.\n"); |
b4a20239 AC |
726 | } |
727 | else | |
728 | { | |
729 | set_architecture_from_file (abfd); | |
730 | set_endian_from_file (abfd); | |
731 | } | |
732 | } | |
733 | ||
734 | /* Initialize the current architecture. Update the ``set | |
735 | architecture'' command so that it specifies a list of valid | |
736 | architectures. */ | |
737 | ||
1ba607ad AC |
738 | #ifdef DEFAULT_BFD_ARCH |
739 | extern const bfd_arch_info_type DEFAULT_BFD_ARCH; | |
740 | static const bfd_arch_info_type *default_bfd_arch = &DEFAULT_BFD_ARCH; | |
741 | #else | |
4b9b3959 | 742 | static const bfd_arch_info_type *default_bfd_arch; |
1ba607ad AC |
743 | #endif |
744 | ||
745 | #ifdef DEFAULT_BFD_VEC | |
746 | extern const bfd_target DEFAULT_BFD_VEC; | |
747 | static const bfd_target *default_bfd_vec = &DEFAULT_BFD_VEC; | |
748 | #else | |
749 | static const bfd_target *default_bfd_vec; | |
750 | #endif | |
751 | ||
b4a20239 AC |
752 | void |
753 | initialize_current_architecture (void) | |
754 | { | |
755 | const char **arches = gdbarch_printable_names (); | |
b4a20239 | 756 | |
1ba607ad AC |
757 | /* determine a default architecture and byte order. */ |
758 | struct gdbarch_info info; | |
fb6ecb0f | 759 | gdbarch_info_init (&info); |
1ba607ad AC |
760 | |
761 | /* Find a default architecture. */ | |
762 | if (info.bfd_arch_info == NULL | |
763 | && default_bfd_arch != NULL) | |
764 | info.bfd_arch_info = default_bfd_arch; | |
765 | if (info.bfd_arch_info == NULL) | |
b4a20239 | 766 | { |
1ba607ad AC |
767 | /* Choose the architecture by taking the first one |
768 | alphabetically. */ | |
769 | const char *chosen = arches[0]; | |
b4a20239 | 770 | const char **arch; |
b4a20239 AC |
771 | for (arch = arches; *arch != NULL; arch++) |
772 | { | |
b4a20239 AC |
773 | if (strcmp (*arch, chosen) < 0) |
774 | chosen = *arch; | |
775 | } | |
776 | if (chosen == NULL) | |
8e65ff28 AC |
777 | internal_error (__FILE__, __LINE__, |
778 | "initialize_current_architecture: No arch"); | |
b4a20239 AC |
779 | info.bfd_arch_info = bfd_scan_arch (chosen); |
780 | if (info.bfd_arch_info == NULL) | |
8e65ff28 AC |
781 | internal_error (__FILE__, __LINE__, |
782 | "initialize_current_architecture: Arch not found"); | |
1ba607ad AC |
783 | } |
784 | ||
afe64c1a | 785 | /* Take several guesses at a byte order. */ |
428721aa | 786 | if (info.byte_order == BFD_ENDIAN_UNKNOWN |
1ba607ad AC |
787 | && default_bfd_vec != NULL) |
788 | { | |
789 | /* Extract BFD's default vector's byte order. */ | |
790 | switch (default_bfd_vec->byteorder) | |
791 | { | |
792 | case BFD_ENDIAN_BIG: | |
d7449b42 | 793 | info.byte_order = BFD_ENDIAN_BIG; |
1ba607ad AC |
794 | break; |
795 | case BFD_ENDIAN_LITTLE: | |
778eb05e | 796 | info.byte_order = BFD_ENDIAN_LITTLE; |
1ba607ad AC |
797 | break; |
798 | default: | |
799 | break; | |
800 | } | |
801 | } | |
428721aa | 802 | if (info.byte_order == BFD_ENDIAN_UNKNOWN) |
1ba607ad AC |
803 | { |
804 | /* look for ``*el-*'' in the target name. */ | |
805 | const char *chp; | |
806 | chp = strchr (target_name, '-'); | |
807 | if (chp != NULL | |
808 | && chp - 2 >= target_name | |
809 | && strncmp (chp - 2, "el", 2) == 0) | |
778eb05e | 810 | info.byte_order = BFD_ENDIAN_LITTLE; |
1ba607ad | 811 | } |
428721aa | 812 | if (info.byte_order == BFD_ENDIAN_UNKNOWN) |
1ba607ad AC |
813 | { |
814 | /* Wire it to big-endian!!! */ | |
d7449b42 | 815 | info.byte_order = BFD_ENDIAN_BIG; |
1ba607ad AC |
816 | } |
817 | ||
818 | if (GDB_MULTI_ARCH) | |
819 | { | |
16f33e29 AC |
820 | if (! gdbarch_update_p (info)) |
821 | { | |
8e65ff28 AC |
822 | internal_error (__FILE__, __LINE__, |
823 | "initialize_current_architecture: Selection of initial architecture failed"); | |
16f33e29 | 824 | } |
b4a20239 | 825 | } |
ceaa8edf | 826 | else |
afe64c1a AC |
827 | { |
828 | /* If the multi-arch logic comes up with a byte-order (from BFD) | |
829 | use it for the non-multi-arch case. */ | |
830 | if (info.byte_order != BFD_ENDIAN_UNKNOWN) | |
831 | target_byte_order = info.byte_order; | |
832 | initialize_non_multiarch (); | |
833 | } | |
b4a20239 | 834 | |
1ba607ad AC |
835 | /* Create the ``set architecture'' command appending ``auto'' to the |
836 | list of architectures. */ | |
b4a20239 AC |
837 | { |
838 | struct cmd_list_element *c; | |
839 | /* Append ``auto''. */ | |
840 | int nr; | |
841 | for (nr = 0; arches[nr] != NULL; nr++); | |
842 | arches = xrealloc (arches, sizeof (char*) * (nr + 2)); | |
843 | arches[nr + 0] = "auto"; | |
844 | arches[nr + 1] = NULL; | |
845 | /* FIXME: add_set_enum_cmd() uses an array of ``char *'' instead | |
846 | of ``const char *''. We just happen to know that the casts are | |
847 | safe. */ | |
848 | c = add_set_enum_cmd ("architecture", class_support, | |
53904c9e | 849 | arches, &set_architecture_string, |
b4a20239 AC |
850 | "Set architecture of target.", |
851 | &setlist); | |
9f60d481 | 852 | set_cmd_sfunc (c, set_architecture); |
b4a20239 AC |
853 | add_alias_cmd ("processor", "architecture", class_support, 1, &setlist); |
854 | /* Don't use set_from_show - need to print both auto/manual and | |
855 | current setting. */ | |
856 | add_cmd ("architecture", class_support, show_architecture, | |
857 | "Show the current target architecture", &showlist); | |
b4a20239 AC |
858 | } |
859 | } | |
860 | ||
861 | ||
fb6ecb0f AC |
862 | /* Initialize a gdbarch info to values that will be automatically |
863 | overridden. Note: Originally, this ``struct info'' was initialized | |
864 | using memset(0). Unfortunatly, that ran into problems, namely | |
865 | BFD_ENDIAN_BIG is zero. An explicit initialization function that | |
866 | can explicitly set each field to a well defined value is used. */ | |
867 | ||
868 | void | |
869 | gdbarch_info_init (struct gdbarch_info *info) | |
870 | { | |
871 | memset (info, 0, sizeof (struct gdbarch_info)); | |
428721aa | 872 | info->byte_order = BFD_ENDIAN_UNKNOWN; |
4be87837 | 873 | info->osabi = GDB_OSABI_UNINITIALIZED; |
fb6ecb0f AC |
874 | } |
875 | ||
c0e8c252 AC |
876 | /* */ |
877 | ||
b4a20239 | 878 | extern initialize_file_ftype _initialize_gdbarch_utils; |
c0e8c252 AC |
879 | |
880 | void | |
b4a20239 | 881 | _initialize_gdbarch_utils (void) |
c0e8c252 | 882 | { |
b4a20239 AC |
883 | struct cmd_list_element *c; |
884 | c = add_set_enum_cmd ("endian", class_support, | |
885 | endian_enum, &set_endian_string, | |
886 | "Set endianness of target.", | |
887 | &setlist); | |
9f60d481 | 888 | set_cmd_sfunc (c, set_endian); |
b4a20239 AC |
889 | /* Don't use set_from_show - need to print both auto/manual and |
890 | current setting. */ | |
891 | add_cmd ("endian", class_support, show_endian, | |
892 | "Show the current byte-order", &showlist); | |
c0e8c252 | 893 | } |