Commit | Line | Data |
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bd5635a1 | 1 | /* Select target systems and architectures at runtime for GDB. |
4ad0021e | 2 | Copyright 1990, 1992, 1993, 1994 Free Software Foundation, Inc. |
bd5635a1 RP |
3 | Contributed by Cygnus Support. |
4 | ||
5 | This file is part of GDB. | |
6 | ||
e17960fb | 7 | This program is free software; you can redistribute it and/or modify |
bd5635a1 | 8 | it under the terms of the GNU General Public License as published by |
e17960fb JG |
9 | the Free Software Foundation; either version 2 of the License, or |
10 | (at your option) any later version. | |
bd5635a1 | 11 | |
e17960fb | 12 | This program is distributed in the hope that it will be useful, |
bd5635a1 RP |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
e17960fb JG |
18 | along with this program; if not, write to the Free Software |
19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
bd5635a1 | 20 | |
80d68b1d | 21 | #include "defs.h" |
bd5635a1 RP |
22 | #include <errno.h> |
23 | #include <ctype.h> | |
bd5635a1 RP |
24 | #include "target.h" |
25 | #include "gdbcmd.h" | |
26 | #include "symtab.h" | |
27 | #include "inferior.h" | |
28 | #include "bfd.h" | |
29 | #include "symfile.h" | |
51b57ded | 30 | #include "objfiles.h" |
4ad0021e JK |
31 | #include "wait.h" |
32 | #include <signal.h> | |
bd5635a1 | 33 | |
e17960fb JG |
34 | extern int errno; |
35 | ||
7919c3ed JG |
36 | static void |
37 | target_info PARAMS ((char *, int)); | |
38 | ||
39 | static void | |
40 | cleanup_target PARAMS ((struct target_ops *)); | |
41 | ||
42 | static void | |
43 | maybe_kill_then_create_inferior PARAMS ((char *, char *, char **)); | |
44 | ||
45 | static void | |
46 | maybe_kill_then_attach PARAMS ((char *, int)); | |
47 | ||
48 | static void | |
49 | kill_or_be_killed PARAMS ((int)); | |
50 | ||
51 | static void | |
52 | default_terminal_info PARAMS ((char *, int)); | |
53 | ||
54 | static int | |
55 | nosymbol PARAMS ((char *, CORE_ADDR *)); | |
56 | ||
7919c3ed JG |
57 | static void |
58 | tcomplain PARAMS ((void)); | |
59 | ||
60 | static int | |
4fc5969d | 61 | nomemory PARAMS ((CORE_ADDR, char *, int, int, struct target_ops *)); |
7919c3ed | 62 | |
597dc86b SG |
63 | static int |
64 | return_zero PARAMS ((void)); | |
65 | ||
7919c3ed JG |
66 | static void |
67 | ignore PARAMS ((void)); | |
597dc86b | 68 | |
7919c3ed JG |
69 | static void |
70 | target_command PARAMS ((char *, int)); | |
bd5635a1 | 71 | |
597dc86b SG |
72 | static struct target_ops * |
73 | find_default_run_target PARAMS ((char *)); | |
74 | ||
bd5635a1 RP |
75 | /* Pointer to array of target architecture structures; the size of the |
76 | array; the current index into the array; the allocated size of the | |
77 | array. */ | |
78 | struct target_ops **target_structs; | |
79 | unsigned target_struct_size; | |
80 | unsigned target_struct_index; | |
81 | unsigned target_struct_allocsize; | |
82 | #define DEFAULT_ALLOCSIZE 10 | |
83 | ||
84 | /* The initial current target, so that there is always a semi-valid | |
85 | current target. */ | |
86 | ||
f2fc6e7a | 87 | struct target_ops dummy_target = {"None", "None", "", |
597dc86b SG |
88 | 0, 0, /* open, close */ |
89 | find_default_attach, 0, /* attach, detach */ | |
bd5635a1 | 90 | 0, 0, /* resume, wait */ |
dcc8abce | 91 | 0, 0, 0, /* registers */ |
bd5635a1 RP |
92 | 0, 0, /* memory */ |
93 | 0, 0, /* bkpts */ | |
94 | 0, 0, 0, 0, 0, /* terminal */ | |
fc47a10d | 95 | 0, 0, /* kill, load */ |
e17960fb | 96 | 0, /* lookup_symbol */ |
597dc86b SG |
97 | find_default_create_inferior, /* create_inferior */ |
98 | 0, /* mourn_inferior */ | |
99 | 0, /* can_run */ | |
49781499 | 100 | 0, /* notice_signals */ |
bd5635a1 RP |
101 | dummy_stratum, 0, /* stratum, next */ |
102 | 0, 0, 0, 0, 0, /* all mem, mem, stack, regs, exec */ | |
e17960fb | 103 | 0, 0, /* section pointers */ |
bd5635a1 RP |
104 | OPS_MAGIC, |
105 | }; | |
106 | ||
cad1498f | 107 | /* Top of target stack. */ |
bd5635a1 | 108 | |
cad1498f | 109 | struct target_stack_item *target_stack; |
bd5635a1 | 110 | |
cad1498f SG |
111 | /* The target structure we are currently using to talk to a process |
112 | or file or whatever "inferior" we have. */ | |
bd5635a1 | 113 | |
cad1498f | 114 | struct target_ops current_target; |
bd5635a1 | 115 | |
f2fc6e7a JK |
116 | /* Command list for target. */ |
117 | ||
118 | static struct cmd_list_element *targetlist = NULL; | |
119 | ||
16d2cc80 SS |
120 | /* Nonzero if we are debugging an attached outside process |
121 | rather than an inferior. */ | |
122 | ||
123 | int attach_flag; | |
124 | ||
f2fc6e7a JK |
125 | /* The user just typed 'target' without the name of a target. */ |
126 | ||
e1ce8aa5 | 127 | /* ARGSUSED */ |
f2fc6e7a JK |
128 | static void |
129 | target_command (arg, from_tty) | |
130 | char *arg; | |
131 | int from_tty; | |
132 | { | |
597dc86b | 133 | fputs_filtered ("Argument required (target name). Try `help target'\n", |
67ac9759 | 134 | gdb_stdout); |
f2fc6e7a | 135 | } |
bd5635a1 RP |
136 | |
137 | /* Add a possible target architecture to the list. */ | |
138 | ||
139 | void | |
140 | add_target (t) | |
141 | struct target_ops *t; | |
142 | { | |
bd5635a1 RP |
143 | if (!target_structs) |
144 | { | |
145 | target_struct_allocsize = DEFAULT_ALLOCSIZE; | |
146 | target_structs = (struct target_ops **) xmalloc | |
147 | (target_struct_allocsize * sizeof (*target_structs)); | |
148 | } | |
149 | if (target_struct_size >= target_struct_allocsize) | |
150 | { | |
151 | target_struct_allocsize *= 2; | |
7919c3ed JG |
152 | target_structs = (struct target_ops **) |
153 | xrealloc ((char *) target_structs, | |
154 | target_struct_allocsize * sizeof (*target_structs)); | |
bd5635a1 RP |
155 | } |
156 | target_structs[target_struct_size++] = t; | |
157 | cleanup_target (t); | |
f2fc6e7a JK |
158 | |
159 | if (targetlist == NULL) | |
160 | add_prefix_cmd ("target", class_run, target_command, | |
161 | "Connect to a target machine or process.\n\ | |
162 | The first argument is the type or protocol of the target machine.\n\ | |
163 | Remaining arguments are interpreted by the target protocol. For more\n\ | |
164 | information on the arguments for a particular protocol, type\n\ | |
165 | `help target ' followed by the protocol name.", | |
166 | &targetlist, "target ", 0, &cmdlist); | |
167 | add_cmd (t->to_shortname, no_class, t->to_open, t->to_doc, &targetlist); | |
bd5635a1 RP |
168 | } |
169 | ||
170 | /* Stub functions */ | |
171 | ||
172 | static void | |
173 | ignore () | |
174 | { | |
175 | } | |
176 | ||
177 | /* ARGSUSED */ | |
178 | static int | |
4fc5969d | 179 | nomemory (memaddr, myaddr, len, write, t) |
bd5635a1 RP |
180 | CORE_ADDR memaddr; |
181 | char *myaddr; | |
182 | int len; | |
183 | int write; | |
4fc5969d | 184 | struct target_ops *t; |
bd5635a1 | 185 | { |
51b57ded | 186 | errno = EIO; /* Can't read/write this location */ |
bd5635a1 RP |
187 | return 0; /* No bytes handled */ |
188 | } | |
189 | ||
190 | static void | |
191 | tcomplain () | |
192 | { | |
193 | error ("You can't do that when your target is `%s'", | |
cad1498f | 194 | current_target.to_shortname); |
bd5635a1 RP |
195 | } |
196 | ||
80d68b1d | 197 | void |
bd5635a1 RP |
198 | noprocess () |
199 | { | |
200 | error ("You can't do that without a process to debug"); | |
201 | } | |
202 | ||
e1ce8aa5 | 203 | /* ARGSUSED */ |
bd5635a1 RP |
204 | static int |
205 | nosymbol (name, addrp) | |
206 | char *name; | |
207 | CORE_ADDR *addrp; | |
208 | { | |
209 | return 1; /* Symbol does not exist in target env */ | |
210 | } | |
211 | ||
e1ce8aa5 | 212 | /* ARGSUSED */ |
bd5635a1 RP |
213 | static void |
214 | default_terminal_info (args, from_tty) | |
215 | char *args; | |
216 | int from_tty; | |
217 | { | |
67ac9759 | 218 | printf_unfiltered("No saved terminal information.\n"); |
bd5635a1 RP |
219 | } |
220 | ||
bd5635a1 RP |
221 | /* This is the default target_create_inferior and target_attach function. |
222 | If the current target is executing, it asks whether to kill it off. | |
223 | If this function returns without calling error(), it has killed off | |
224 | the target, and the operation should be attempted. */ | |
225 | ||
226 | static void | |
227 | kill_or_be_killed (from_tty) | |
228 | int from_tty; | |
229 | { | |
bd5635a1 RP |
230 | if (target_has_execution) |
231 | { | |
67ac9759 | 232 | printf_unfiltered ("You are already running a program:\n"); |
bd5635a1 RP |
233 | target_files_info (); |
234 | if (query ("Kill it? ")) { | |
e17960fb | 235 | target_kill (); |
bd5635a1 RP |
236 | if (target_has_execution) |
237 | error ("Killing the program did not help."); | |
238 | return; | |
239 | } else { | |
240 | error ("Program not killed."); | |
241 | } | |
242 | } | |
243 | tcomplain(); | |
244 | } | |
245 | ||
246 | static void | |
247 | maybe_kill_then_attach (args, from_tty) | |
248 | char *args; | |
249 | int from_tty; | |
250 | { | |
251 | kill_or_be_killed (from_tty); | |
252 | target_attach (args, from_tty); | |
253 | } | |
254 | ||
255 | static void | |
256 | maybe_kill_then_create_inferior (exec, args, env) | |
257 | char *exec; | |
258 | char *args; | |
259 | char **env; | |
260 | { | |
261 | kill_or_be_killed (0); | |
262 | target_create_inferior (exec, args, env); | |
263 | } | |
264 | ||
265 | /* Clean up a target struct so it no longer has any zero pointers in it. | |
266 | We default entries, at least to stubs that print error messages. */ | |
267 | ||
268 | static void | |
269 | cleanup_target (t) | |
270 | struct target_ops *t; | |
271 | { | |
272 | ||
bd5635a1 RP |
273 | #define de_fault(field, value) \ |
274 | if (!t->field) t->field = value | |
275 | ||
276 | /* FIELD DEFAULT VALUE */ | |
277 | ||
7919c3ed | 278 | de_fault (to_open, (void (*)())tcomplain); |
bd5635a1 RP |
279 | de_fault (to_close, (void (*)())ignore); |
280 | de_fault (to_attach, maybe_kill_then_attach); | |
281 | de_fault (to_detach, (void (*)())ignore); | |
282 | de_fault (to_resume, (void (*)())noprocess); | |
7919c3ed JG |
283 | de_fault (to_wait, (int (*)())noprocess); |
284 | de_fault (to_fetch_registers, (void (*)())ignore); | |
e17960fb | 285 | de_fault (to_store_registers, (void (*)())noprocess); |
bd5635a1 | 286 | de_fault (to_prepare_to_store, (void (*)())noprocess); |
7919c3ed JG |
287 | de_fault (to_xfer_memory, (int (*)())nomemory); |
288 | de_fault (to_files_info, (void (*)())ignore); | |
bd5635a1 RP |
289 | de_fault (to_insert_breakpoint, memory_insert_breakpoint); |
290 | de_fault (to_remove_breakpoint, memory_remove_breakpoint); | |
291 | de_fault (to_terminal_init, ignore); | |
292 | de_fault (to_terminal_inferior, ignore); | |
293 | de_fault (to_terminal_ours_for_output,ignore); | |
294 | de_fault (to_terminal_ours, ignore); | |
295 | de_fault (to_terminal_info, default_terminal_info); | |
296 | de_fault (to_kill, (void (*)())noprocess); | |
7919c3ed | 297 | de_fault (to_load, (void (*)())tcomplain); |
bd5635a1 RP |
298 | de_fault (to_lookup_symbol, nosymbol); |
299 | de_fault (to_create_inferior, maybe_kill_then_create_inferior); | |
300 | de_fault (to_mourn_inferior, (void (*)())noprocess); | |
597dc86b | 301 | de_fault (to_can_run, return_zero); |
49781499 | 302 | de_fault (to_notice_signals, (void (*)())ignore); |
bd5635a1 RP |
303 | |
304 | #undef de_fault | |
305 | } | |
306 | ||
cad1498f SG |
307 | /* Go through the target stack from top to bottom, copying over zero entries in |
308 | current_target. In effect, we are doing class inheritance through the | |
309 | pushed target vectors. */ | |
310 | ||
311 | static void | |
312 | update_current_target () | |
313 | { | |
314 | struct target_stack_item *item; | |
315 | struct target_ops *t; | |
316 | ||
317 | /* First, reset current_target */ | |
318 | memset (¤t_target, 0, sizeof current_target); | |
319 | ||
320 | for (item = target_stack; item; item = item->next) | |
321 | { | |
322 | t = item->target_ops; | |
323 | ||
324 | #define INHERIT(FIELD, TARGET) \ | |
325 | if (!current_target.FIELD) \ | |
326 | current_target.FIELD = TARGET->FIELD | |
327 | ||
328 | INHERIT (to_shortname, t); | |
329 | INHERIT (to_longname, t); | |
330 | INHERIT (to_doc, t); | |
331 | INHERIT (to_open, t); | |
332 | INHERIT (to_close, t); | |
333 | INHERIT (to_attach, t); | |
334 | INHERIT (to_detach, t); | |
335 | INHERIT (to_resume, t); | |
336 | INHERIT (to_wait, t); | |
337 | INHERIT (to_fetch_registers, t); | |
338 | INHERIT (to_store_registers, t); | |
339 | INHERIT (to_prepare_to_store, t); | |
340 | INHERIT (to_xfer_memory, t); | |
341 | INHERIT (to_files_info, t); | |
342 | INHERIT (to_insert_breakpoint, t); | |
343 | INHERIT (to_remove_breakpoint, t); | |
344 | INHERIT (to_terminal_init, t); | |
345 | INHERIT (to_terminal_inferior, t); | |
346 | INHERIT (to_terminal_ours_for_output, t); | |
347 | INHERIT (to_terminal_ours, t); | |
348 | INHERIT (to_terminal_info, t); | |
349 | INHERIT (to_kill, t); | |
350 | INHERIT (to_load, t); | |
351 | INHERIT (to_lookup_symbol, t); | |
352 | INHERIT (to_create_inferior, t); | |
353 | INHERIT (to_mourn_inferior, t); | |
354 | INHERIT (to_can_run, t); | |
355 | INHERIT (to_notice_signals, t); | |
356 | INHERIT (to_stratum, t); | |
357 | INHERIT (DONT_USE, t); | |
358 | INHERIT (to_has_all_memory, t); | |
359 | INHERIT (to_has_memory, t); | |
360 | INHERIT (to_has_stack, t); | |
361 | INHERIT (to_has_registers, t); | |
362 | INHERIT (to_has_execution, t); | |
363 | INHERIT (to_sections, t); | |
364 | INHERIT (to_sections_end, t); | |
365 | INHERIT (to_magic, t); | |
366 | ||
367 | #undef INHERIT | |
368 | } | |
369 | } | |
370 | ||
bd5635a1 RP |
371 | /* Push a new target type into the stack of the existing target accessors, |
372 | possibly superseding some of the existing accessors. | |
373 | ||
374 | Result is zero if the pushed target ended up on top of the stack, | |
375 | nonzero if at least one target is on top of it. | |
376 | ||
377 | Rather than allow an empty stack, we always have the dummy target at | |
378 | the bottom stratum, so we can call the function vectors without | |
379 | checking them. */ | |
380 | ||
381 | int | |
382 | push_target (t) | |
383 | struct target_ops *t; | |
384 | { | |
cad1498f SG |
385 | struct target_stack_item *cur, *prev, *tmp; |
386 | ||
387 | /* Check magic number. If wrong, it probably means someone changed | |
388 | the struct definition, but not all the places that initialize one. */ | |
389 | if (t->to_magic != OPS_MAGIC) | |
390 | { | |
391 | fprintf_unfiltered(gdb_stderr, | |
392 | "Magic number of %s target struct wrong\n", | |
393 | t->to_shortname); | |
394 | abort(); | |
395 | } | |
396 | ||
397 | /* Find the proper stratum to install this target in. */ | |
398 | ||
399 | for (prev = NULL, cur = target_stack; cur; prev = cur, cur = cur->next) | |
400 | { | |
401 | if ((int)(t->to_stratum) >= (int)(cur->target_ops->to_stratum)) | |
402 | break; | |
403 | } | |
404 | ||
405 | /* If there's already targets at this stratum, remove them. */ | |
406 | ||
407 | if (cur) | |
408 | while (t->to_stratum == cur->target_ops->to_stratum) | |
409 | { | |
410 | /* There's already something on this stratum. Close it off. */ | |
411 | (cur->target_ops->to_close) (0); | |
412 | if (prev) | |
413 | prev->next = cur->next; /* Unchain old target_ops */ | |
414 | else | |
415 | target_stack = cur->next; /* Unchain first on list */ | |
416 | tmp = cur->next; | |
417 | free (cur); | |
418 | cur = tmp; | |
419 | } | |
420 | ||
421 | /* We have removed all targets in our stratum, now add the new one. */ | |
422 | ||
f6d5d006 JK |
423 | tmp = (struct target_stack_item *) |
424 | xmalloc (sizeof (struct target_stack_item)); | |
cad1498f SG |
425 | tmp->next = cur; |
426 | tmp->target_ops = t; | |
bd5635a1 | 427 | |
bd5635a1 | 428 | if (prev) |
cad1498f | 429 | prev->next = tmp; |
bd5635a1 | 430 | else |
cad1498f SG |
431 | target_stack = tmp; |
432 | ||
433 | update_current_target (); | |
bd5635a1 | 434 | |
cad1498f | 435 | cleanup_target (¤t_target); /* Fill in the gaps */ |
bd5635a1 RP |
436 | return prev != 0; |
437 | } | |
438 | ||
439 | /* Remove a target_ops vector from the stack, wherever it may be. | |
cad1498f | 440 | Return how many times it was removed (0 or 1). */ |
bd5635a1 RP |
441 | |
442 | int | |
443 | unpush_target (t) | |
444 | struct target_ops *t; | |
445 | { | |
cad1498f | 446 | struct target_stack_item *cur, *prev; |
bd5635a1 | 447 | |
67e947de SG |
448 | t->to_close (0); /* Let it clean up */ |
449 | ||
cad1498f SG |
450 | /* Look for the specified target. Note that we assume that a target |
451 | can only occur once in the target stack. */ | |
452 | ||
453 | for (cur = target_stack, prev = NULL; cur; prev = cur, cur = cur->next) | |
454 | if (cur->target_ops == t) | |
455 | break; | |
456 | ||
457 | if (!cur) | |
458 | return 0; /* Didn't find target_ops, quit now */ | |
459 | ||
460 | /* Unchain the target */ | |
461 | ||
462 | if (!prev) | |
67e947de | 463 | target_stack = cur->next; |
cad1498f SG |
464 | else |
465 | prev->next = cur->next; | |
466 | ||
467 | free (cur); /* Release the target_stack_item */ | |
468 | ||
67e947de SG |
469 | update_current_target (); |
470 | cleanup_target (¤t_target); | |
cad1498f SG |
471 | |
472 | return 1; | |
bd5635a1 RP |
473 | } |
474 | ||
475 | void | |
476 | pop_target () | |
477 | { | |
cad1498f SG |
478 | (current_target.to_close)(0); /* Let it clean up */ |
479 | if (unpush_target (target_stack->target_ops) == 1) | |
480 | return; | |
481 | ||
482 | fprintf_unfiltered(gdb_stderr, | |
483 | "pop_target couldn't find target %s\n", | |
484 | current_target.to_shortname); | |
485 | abort(); | |
bd5635a1 RP |
486 | } |
487 | ||
49781499 | 488 | #undef MIN |
e17960fb JG |
489 | #define MIN(A, B) (((A) <= (B)) ? (A) : (B)) |
490 | ||
4ad0021e JK |
491 | /* target_read_string -- read a null terminated string, up to LEN bytes, |
492 | from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful. | |
493 | Set *STRING to a pointer to malloc'd memory containing the data; the caller | |
494 | is responsible for freeing it. Return the number of bytes successfully | |
495 | read. */ | |
e17960fb JG |
496 | |
497 | int | |
4ad0021e | 498 | target_read_string (memaddr, string, len, errnop) |
e17960fb | 499 | CORE_ADDR memaddr; |
4ad0021e | 500 | char **string; |
e17960fb | 501 | int len; |
4ad0021e | 502 | int *errnop; |
e17960fb JG |
503 | { |
504 | int tlen, origlen, offset, i; | |
505 | char buf[4]; | |
4ad0021e JK |
506 | int errcode = 0; |
507 | char *buffer; | |
508 | int buffer_allocated; | |
509 | char *bufptr; | |
510 | unsigned int nbytes_read = 0; | |
511 | ||
512 | /* Small for testing. */ | |
513 | buffer_allocated = 4; | |
514 | buffer = xmalloc (buffer_allocated); | |
515 | bufptr = buffer; | |
e17960fb JG |
516 | |
517 | origlen = len; | |
518 | ||
519 | while (len > 0) | |
520 | { | |
521 | tlen = MIN (len, 4 - (memaddr & 3)); | |
522 | offset = memaddr & 3; | |
523 | ||
4ad0021e JK |
524 | errcode = target_xfer_memory (memaddr & ~3, buf, 4, 0); |
525 | if (errcode != 0) | |
526 | goto done; | |
527 | ||
528 | if (bufptr - buffer + tlen > buffer_allocated) | |
529 | { | |
530 | unsigned int bytes; | |
531 | bytes = bufptr - buffer; | |
532 | buffer_allocated *= 2; | |
533 | buffer = xrealloc (buffer, buffer_allocated); | |
534 | bufptr = buffer + bytes; | |
535 | } | |
e17960fb JG |
536 | |
537 | for (i = 0; i < tlen; i++) | |
538 | { | |
4ad0021e | 539 | *bufptr++ = buf[i + offset]; |
e17960fb | 540 | if (buf[i + offset] == '\000') |
4ad0021e JK |
541 | { |
542 | nbytes_read += i + 1; | |
543 | goto done; | |
544 | } | |
e17960fb JG |
545 | } |
546 | ||
547 | memaddr += tlen; | |
548 | len -= tlen; | |
4ad0021e | 549 | nbytes_read += tlen; |
e17960fb | 550 | } |
4ad0021e JK |
551 | done: |
552 | if (errnop != NULL) | |
553 | *errnop = errcode; | |
554 | if (string != NULL) | |
555 | *string = buffer; | |
556 | return nbytes_read; | |
e17960fb JG |
557 | } |
558 | ||
49781499 JK |
559 | /* Read LEN bytes of target memory at address MEMADDR, placing the results in |
560 | GDB's memory at MYADDR. Returns either 0 for success or an errno value | |
561 | if any error occurs. | |
bd5635a1 | 562 | |
49781499 JK |
563 | If an error occurs, no guarantee is made about the contents of the data at |
564 | MYADDR. In particular, the caller should not depend upon partial reads | |
565 | filling the buffer with good data. There is no way for the caller to know | |
566 | how much good data might have been transfered anyway. Callers that can | |
567 | deal with partial reads should call target_read_memory_partial. */ | |
bd5635a1 RP |
568 | |
569 | int | |
570 | target_read_memory (memaddr, myaddr, len) | |
571 | CORE_ADDR memaddr; | |
572 | char *myaddr; | |
573 | int len; | |
574 | { | |
575 | return target_xfer_memory (memaddr, myaddr, len, 0); | |
576 | } | |
577 | ||
49781499 JK |
578 | /* Read LEN bytes of target memory at address MEMADDR, placing the results |
579 | in GDB's memory at MYADDR. Returns a count of the bytes actually read, | |
580 | and optionally an errno value in the location pointed to by ERRNOPTR | |
581 | if ERRNOPTR is non-null. */ | |
582 | ||
583 | int | |
584 | target_read_memory_partial (memaddr, myaddr, len, errnoptr) | |
585 | CORE_ADDR memaddr; | |
586 | char *myaddr; | |
587 | int len; | |
588 | int *errnoptr; | |
589 | { | |
590 | int nread; /* Number of bytes actually read. */ | |
591 | int errcode; /* Error from last read. */ | |
592 | ||
593 | /* First try a complete read. */ | |
594 | errcode = target_xfer_memory (memaddr, myaddr, len, 0); | |
595 | if (errcode == 0) | |
596 | { | |
597 | /* Got it all. */ | |
598 | nread = len; | |
599 | } | |
600 | else | |
601 | { | |
602 | /* Loop, reading one byte at a time until we get as much as we can. */ | |
603 | for (errcode = 0, nread = 0; len > 0 && errcode == 0; nread++, len--) | |
604 | { | |
605 | errcode = target_xfer_memory (memaddr++, myaddr++, 1, 0); | |
606 | } | |
607 | /* If an error, the last read was unsuccessful, so adjust count. */ | |
608 | if (errcode != 0) | |
609 | { | |
610 | nread--; | |
611 | } | |
612 | } | |
613 | if (errnoptr != NULL) | |
614 | { | |
615 | *errnoptr = errcode; | |
616 | } | |
617 | return (nread); | |
618 | } | |
619 | ||
bd5635a1 RP |
620 | int |
621 | target_write_memory (memaddr, myaddr, len) | |
622 | CORE_ADDR memaddr; | |
623 | char *myaddr; | |
624 | int len; | |
625 | { | |
626 | return target_xfer_memory (memaddr, myaddr, len, 1); | |
627 | } | |
628 | ||
49781499 JK |
629 | /* Move memory to or from the targets. Iterate until all of it has |
630 | been moved, if necessary. The top target gets priority; anything | |
631 | it doesn't want, is offered to the next one down, etc. Note the | |
632 | business with curlen: if an early target says "no, but I have a | |
633 | boundary overlapping this xfer" then we shorten what we offer to | |
634 | the subsequent targets so the early guy will get a chance at the | |
635 | tail before the subsequent ones do. | |
636 | ||
637 | Result is 0 or errno value. */ | |
638 | ||
bd5635a1 RP |
639 | int |
640 | target_xfer_memory (memaddr, myaddr, len, write) | |
641 | CORE_ADDR memaddr; | |
642 | char *myaddr; | |
643 | int len; | |
644 | int write; | |
645 | { | |
646 | int curlen; | |
647 | int res; | |
648 | struct target_ops *t; | |
cad1498f | 649 | struct target_stack_item *item; |
49781499 JK |
650 | |
651 | /* to_xfer_memory is not guaranteed to set errno, even when it returns | |
652 | 0. */ | |
653 | errno = 0; | |
654 | ||
bd5635a1 | 655 | /* The quick case is that the top target does it all. */ |
cad1498f SG |
656 | res = current_target.to_xfer_memory |
657 | (memaddr, myaddr, len, write, ¤t_target); | |
bd5635a1 RP |
658 | if (res == len) |
659 | return 0; | |
660 | ||
661 | if (res > 0) | |
662 | goto bump; | |
663 | /* If res <= 0 then we call it again in the loop. Ah well. */ | |
664 | ||
665 | for (; len > 0;) | |
666 | { | |
667 | curlen = len; /* Want to do it all */ | |
cad1498f | 668 | for (item = target_stack; item; item = item->next) |
bd5635a1 | 669 | { |
cad1498f SG |
670 | t = item->target_ops; |
671 | ||
672 | res = t->to_xfer_memory (memaddr, myaddr, curlen, write, t); | |
673 | if (res > 0) | |
674 | break; /* Handled all or part of xfer */ | |
675 | if (t->to_has_all_memory) | |
676 | break; | |
bd5635a1 | 677 | } |
cad1498f | 678 | |
bd5635a1 RP |
679 | if (res <= 0) |
680 | { | |
681 | /* If this address is for nonexistent memory, | |
682 | read zeros if reading, or do nothing if writing. Return error. */ | |
683 | if (!write) | |
a8e033f2 | 684 | memset (myaddr, 0, len); |
e17960fb JG |
685 | if (errno == 0) |
686 | return EIO; | |
687 | else | |
688 | return errno; | |
bd5635a1 RP |
689 | } |
690 | bump: | |
691 | memaddr += res; | |
692 | myaddr += res; | |
693 | len -= res; | |
694 | } | |
695 | return 0; /* We managed to cover it all somehow. */ | |
696 | } | |
697 | ||
698 | ||
e1ce8aa5 | 699 | /* ARGSUSED */ |
bd5635a1 RP |
700 | static void |
701 | target_info (args, from_tty) | |
702 | char *args; | |
703 | int from_tty; | |
704 | { | |
705 | struct target_ops *t; | |
cad1498f | 706 | struct target_stack_item *item; |
bd5635a1 RP |
707 | int has_all_mem = 0; |
708 | ||
80d68b1d | 709 | if (symfile_objfile != NULL) |
67ac9759 | 710 | printf_unfiltered ("Symbols from \"%s\".\n", symfile_objfile->name); |
bd5635a1 RP |
711 | |
712 | #ifdef FILES_INFO_HOOK | |
713 | if (FILES_INFO_HOOK ()) | |
714 | return; | |
715 | #endif | |
716 | ||
cad1498f | 717 | for (item = target_stack; item; item = item->next) |
bd5635a1 | 718 | { |
cad1498f SG |
719 | t = item->target_ops; |
720 | ||
bd5635a1 RP |
721 | if ((int)(t->to_stratum) <= (int)dummy_stratum) |
722 | continue; | |
723 | if (has_all_mem) | |
cad1498f | 724 | printf_unfiltered("\tWhile running this, GDB does not access memory from...\n"); |
67ac9759 | 725 | printf_unfiltered("%s:\n", t->to_longname); |
e17960fb | 726 | (t->to_files_info)(t); |
bd5635a1 RP |
727 | has_all_mem = t->to_has_all_memory; |
728 | } | |
729 | } | |
730 | ||
f2fc6e7a JK |
731 | /* This is to be called by the open routine before it does |
732 | anything. */ | |
bd5635a1 | 733 | |
f2fc6e7a JK |
734 | void |
735 | target_preopen (from_tty) | |
bd5635a1 RP |
736 | int from_tty; |
737 | { | |
bd5635a1 RP |
738 | dont_repeat(); |
739 | ||
bd5635a1 RP |
740 | if (target_has_execution) |
741 | { | |
742 | if (query ("A program is being debugged already. Kill it? ")) | |
e17960fb | 743 | target_kill (); |
bd5635a1 RP |
744 | else |
745 | error ("Program not killed."); | |
746 | } | |
4ad0021e JK |
747 | |
748 | /* Calling target_kill may remove the target from the stack. But if | |
749 | it doesn't (which seems like a win for UDI), remove it now. */ | |
750 | ||
751 | if (target_has_execution) | |
752 | pop_target (); | |
bd5635a1 RP |
753 | } |
754 | ||
49781499 JK |
755 | /* Detach a target after doing deferred register stores. */ |
756 | ||
757 | void | |
758 | target_detach (args, from_tty) | |
759 | char *args; | |
760 | int from_tty; | |
761 | { | |
762 | /* Handle any optimized stores to the inferior. */ | |
763 | #ifdef DO_DEFERRED_STORES | |
764 | DO_DEFERRED_STORES; | |
765 | #endif | |
cad1498f | 766 | (current_target.to_detach) (args, from_tty); |
49781499 JK |
767 | } |
768 | ||
1340861c KH |
769 | void |
770 | target_link (modname, t_reloc) | |
771 | char *modname; | |
772 | CORE_ADDR *t_reloc; | |
773 | { | |
cad1498f | 774 | if (STREQ(current_target.to_shortname, "rombug")) |
1340861c | 775 | { |
cad1498f | 776 | (current_target.to_lookup_symbol) (modname, t_reloc); |
16d2cc80 SS |
777 | if (*t_reloc == 0) |
778 | error("Unable to link to %s and get relocation in rombug", modname); | |
1340861c KH |
779 | } |
780 | else | |
781 | *t_reloc = (CORE_ADDR)-1; | |
782 | } | |
783 | ||
597dc86b SG |
784 | /* Look through the list of possible targets for a target that can |
785 | execute a run or attach command without any other data. This is | |
786 | used to locate the default process stratum. | |
787 | ||
788 | Result is always valid (error() is called for errors). */ | |
789 | ||
790 | static struct target_ops * | |
791 | find_default_run_target (do_mesg) | |
792 | char *do_mesg; | |
793 | { | |
794 | struct target_ops **t; | |
49781499 | 795 | struct target_ops *runable = NULL; |
597dc86b SG |
796 | int count; |
797 | ||
798 | count = 0; | |
799 | ||
800 | for (t = target_structs; t < target_structs + target_struct_size; | |
801 | ++t) | |
802 | { | |
803 | if (target_can_run(*t)) | |
804 | { | |
805 | runable = *t; | |
806 | ++count; | |
807 | } | |
808 | } | |
809 | ||
810 | if (count != 1) | |
811 | error ("Don't know how to %s. Try \"help target\".", do_mesg); | |
812 | ||
813 | return runable; | |
814 | } | |
815 | ||
816 | void | |
817 | find_default_attach (args, from_tty) | |
818 | char *args; | |
819 | int from_tty; | |
820 | { | |
821 | struct target_ops *t; | |
822 | ||
823 | t = find_default_run_target("attach"); | |
824 | (t->to_attach) (args, from_tty); | |
825 | return; | |
826 | } | |
827 | ||
828 | void | |
829 | find_default_create_inferior (exec_file, allargs, env) | |
830 | char *exec_file; | |
831 | char *allargs; | |
832 | char **env; | |
833 | { | |
834 | struct target_ops *t; | |
835 | ||
836 | t = find_default_run_target("run"); | |
837 | (t->to_create_inferior) (exec_file, allargs, env); | |
838 | return; | |
839 | } | |
840 | ||
841 | static int | |
842 | return_zero () | |
843 | { | |
844 | return 0; | |
845 | } | |
846 | ||
49781499 JK |
847 | struct target_ops * |
848 | find_core_target () | |
849 | { | |
850 | struct target_ops **t; | |
851 | struct target_ops *runable = NULL; | |
852 | int count; | |
853 | ||
854 | count = 0; | |
855 | ||
856 | for (t = target_structs; t < target_structs + target_struct_size; | |
857 | ++t) | |
858 | { | |
859 | if ((*t)->to_stratum == core_stratum) | |
860 | { | |
861 | runable = *t; | |
862 | ++count; | |
863 | } | |
864 | } | |
865 | ||
866 | return(count == 1 ? runable : NULL); | |
867 | } | |
67ac9759 | 868 | \f |
16d2cc80 SS |
869 | /* The inferior process has died. Long live the inferior! */ |
870 | ||
871 | void | |
872 | generic_mourn_inferior () | |
873 | { | |
cad1498f SG |
874 | extern int show_breakpoint_hit_counts; |
875 | ||
16d2cc80 SS |
876 | inferior_pid = 0; |
877 | attach_flag = 0; | |
878 | breakpoint_init_inferior (); | |
879 | registers_changed (); | |
880 | ||
881 | #ifdef CLEAR_DEFERRED_STORES | |
882 | /* Delete any pending stores to the inferior... */ | |
883 | CLEAR_DEFERRED_STORES; | |
884 | #endif | |
885 | ||
886 | reopen_exec_file (); | |
887 | reinit_frame_cache (); | |
888 | ||
889 | /* It is confusing to the user for ignore counts to stick around | |
890 | from previous runs of the inferior. So clear them. */ | |
cad1498f SG |
891 | /* However, it is more confusing for the ignore counts to disappear when |
892 | using hit counts. So don't clear them if we're counting hits. */ | |
893 | if (!show_breakpoint_hit_counts) | |
894 | breakpoint_clear_ignore_counts (); | |
16d2cc80 SS |
895 | } |
896 | \f | |
67ac9759 JK |
897 | /* This table must match in order and size the signals in enum target_signal |
898 | in target.h. */ | |
899 | static struct { | |
900 | char *name; | |
901 | char *string; | |
902 | } signals [] = | |
903 | { | |
904 | {"0", "Signal 0"}, | |
905 | {"SIGHUP", "Hangup"}, | |
906 | {"SIGINT", "Interrupt"}, | |
907 | {"SIGQUIT", "Quit"}, | |
908 | {"SIGILL", "Illegal instruction"}, | |
909 | {"SIGTRAP", "Trace/breakpoint trap"}, | |
910 | {"SIGABRT", "Aborted"}, | |
911 | {"SIGEMT", "Emulation trap"}, | |
912 | {"SIGFPE", "Arithmetic exception"}, | |
913 | {"SIGKILL", "Killed"}, | |
914 | {"SIGBUS", "Bus error"}, | |
915 | {"SIGSEGV", "Segmentation fault"}, | |
916 | {"SIGSYS", "Bad system call"}, | |
917 | {"SIGPIPE", "Broken pipe"}, | |
918 | {"SIGALRM", "Alarm clock"}, | |
919 | {"SIGTERM", "Terminated"}, | |
920 | {"SIGURG", "Urgent I/O condition"}, | |
921 | {"SIGSTOP", "Stopped (signal)"}, | |
922 | {"SIGTSTP", "Stopped (user)"}, | |
923 | {"SIGCONT", "Continued"}, | |
924 | {"SIGCHLD", "Child status changed"}, | |
925 | {"SIGTTIN", "Stopped (tty input)"}, | |
926 | {"SIGTTOU", "Stopped (tty output)"}, | |
927 | {"SIGIO", "I/O possible"}, | |
928 | {"SIGXCPU", "CPU time limit exceeded"}, | |
929 | {"SIGXFSZ", "File size limit exceeded"}, | |
930 | {"SIGVTALRM", "Virtual timer expired"}, | |
931 | {"SIGPROF", "Profiling timer expired"}, | |
932 | {"SIGWINCH", "Window size changed"}, | |
933 | {"SIGLOST", "Resource lost"}, | |
934 | {"SIGUSR1", "User defined signal 1"}, | |
935 | {"SIGUSR2", "User defined signal 2"}, | |
936 | {"SIGPWR", "Power fail/restart"}, | |
937 | {"SIGPOLL", "Pollable event occurred"}, | |
938 | {"SIGWIND", "SIGWIND"}, | |
939 | {"SIGPHONE", "SIGPHONE"}, | |
940 | {"SIGWAITING", "Process's LWPs are blocked"}, | |
941 | {"SIGLWP", "Signal LWP"}, | |
942 | {"SIGDANGER", "Swap space dangerously low"}, | |
943 | {"SIGGRANT", "Monitor mode granted"}, | |
944 | {"SIGRETRACT", "Need to relinguish monitor mode"}, | |
945 | {"SIGMSG", "Monitor mode data available"}, | |
946 | {"SIGSOUND", "Sound completed"}, | |
947 | {"SIGSAK", "Secure attention"}, | |
948 | {NULL, "Unknown signal"}, | |
4ad0021e JK |
949 | {NULL, "Internal error: printing TARGET_SIGNAL_DEFAULT"}, |
950 | ||
67ac9759 JK |
951 | /* Last entry, used to check whether the table is the right size. */ |
952 | {NULL, "TARGET_SIGNAL_MAGIC"} | |
953 | }; | |
954 | ||
955 | /* Return the string for a signal. */ | |
956 | char * | |
957 | target_signal_to_string (sig) | |
958 | enum target_signal sig; | |
959 | { | |
960 | return signals[sig].string; | |
961 | } | |
962 | ||
963 | /* Return the name for a signal. */ | |
964 | char * | |
965 | target_signal_to_name (sig) | |
966 | enum target_signal sig; | |
967 | { | |
968 | if (sig == TARGET_SIGNAL_UNKNOWN) | |
969 | /* I think the code which prints this will always print it along with | |
970 | the string, so no need to be verbose. */ | |
971 | return "?"; | |
972 | return signals[sig].name; | |
973 | } | |
974 | ||
975 | /* Given a name, return its signal. */ | |
976 | enum target_signal | |
977 | target_signal_from_name (name) | |
978 | char *name; | |
979 | { | |
980 | enum target_signal sig; | |
981 | ||
982 | /* It's possible we also should allow "SIGCLD" as well as "SIGCHLD" | |
983 | for TARGET_SIGNAL_SIGCHLD. SIGIOT, on the other hand, is more | |
984 | questionable; seems like by now people should call it SIGABRT | |
985 | instead. */ | |
986 | ||
4ad0021e JK |
987 | /* This ugly cast brought to you by the native VAX compiler. */ |
988 | for (sig = TARGET_SIGNAL_HUP; | |
989 | signals[sig].name != NULL; | |
990 | sig = (enum target_signal)((int)sig + 1)) | |
67ac9759 JK |
991 | if (STREQ (name, signals[sig].name)) |
992 | return sig; | |
993 | return TARGET_SIGNAL_UNKNOWN; | |
994 | } | |
4ad0021e JK |
995 | \f |
996 | /* The following functions are to help certain targets deal | |
997 | with the signal/waitstatus stuff. They could just as well be in | |
998 | a file called native-utils.c or unixwaitstatus-utils.c or whatever. */ | |
999 | ||
1000 | /* Convert host signal to our signals. */ | |
1001 | enum target_signal | |
1002 | target_signal_from_host (hostsig) | |
1003 | int hostsig; | |
1004 | { | |
1005 | /* A switch statement would make sense but would require special kludges | |
1006 | to deal with the cases where more than one signal has the same number. */ | |
1007 | ||
1008 | if (hostsig == 0) return TARGET_SIGNAL_0; | |
1009 | ||
1010 | #if defined (SIGHUP) | |
1011 | if (hostsig == SIGHUP) return TARGET_SIGNAL_HUP; | |
1012 | #endif | |
1013 | #if defined (SIGINT) | |
1014 | if (hostsig == SIGINT) return TARGET_SIGNAL_INT; | |
1015 | #endif | |
1016 | #if defined (SIGQUIT) | |
1017 | if (hostsig == SIGQUIT) return TARGET_SIGNAL_QUIT; | |
1018 | #endif | |
1019 | #if defined (SIGILL) | |
1020 | if (hostsig == SIGILL) return TARGET_SIGNAL_ILL; | |
1021 | #endif | |
1022 | #if defined (SIGTRAP) | |
1023 | if (hostsig == SIGTRAP) return TARGET_SIGNAL_TRAP; | |
1024 | #endif | |
1025 | #if defined (SIGABRT) | |
1026 | if (hostsig == SIGABRT) return TARGET_SIGNAL_ABRT; | |
1027 | #endif | |
1028 | #if defined (SIGEMT) | |
1029 | if (hostsig == SIGEMT) return TARGET_SIGNAL_EMT; | |
1030 | #endif | |
1031 | #if defined (SIGFPE) | |
1032 | if (hostsig == SIGFPE) return TARGET_SIGNAL_FPE; | |
1033 | #endif | |
1034 | #if defined (SIGKILL) | |
1035 | if (hostsig == SIGKILL) return TARGET_SIGNAL_KILL; | |
1036 | #endif | |
1037 | #if defined (SIGBUS) | |
1038 | if (hostsig == SIGBUS) return TARGET_SIGNAL_BUS; | |
1039 | #endif | |
1040 | #if defined (SIGSEGV) | |
1041 | if (hostsig == SIGSEGV) return TARGET_SIGNAL_SEGV; | |
1042 | #endif | |
1043 | #if defined (SIGSYS) | |
1044 | if (hostsig == SIGSYS) return TARGET_SIGNAL_SYS; | |
1045 | #endif | |
1046 | #if defined (SIGPIPE) | |
1047 | if (hostsig == SIGPIPE) return TARGET_SIGNAL_PIPE; | |
1048 | #endif | |
1049 | #if defined (SIGALRM) | |
1050 | if (hostsig == SIGALRM) return TARGET_SIGNAL_ALRM; | |
1051 | #endif | |
1052 | #if defined (SIGTERM) | |
1053 | if (hostsig == SIGTERM) return TARGET_SIGNAL_TERM; | |
1054 | #endif | |
1055 | #if defined (SIGUSR1) | |
1056 | if (hostsig == SIGUSR1) return TARGET_SIGNAL_USR1; | |
1057 | #endif | |
1058 | #if defined (SIGUSR2) | |
1059 | if (hostsig == SIGUSR2) return TARGET_SIGNAL_USR2; | |
1060 | #endif | |
1061 | #if defined (SIGCLD) | |
1062 | if (hostsig == SIGCLD) return TARGET_SIGNAL_CHLD; | |
1063 | #endif | |
1064 | #if defined (SIGCHLD) | |
1065 | if (hostsig == SIGCHLD) return TARGET_SIGNAL_CHLD; | |
1066 | #endif | |
1067 | #if defined (SIGPWR) | |
1068 | if (hostsig == SIGPWR) return TARGET_SIGNAL_PWR; | |
1069 | #endif | |
1070 | #if defined (SIGWINCH) | |
1071 | if (hostsig == SIGWINCH) return TARGET_SIGNAL_WINCH; | |
1072 | #endif | |
1073 | #if defined (SIGURG) | |
1074 | if (hostsig == SIGURG) return TARGET_SIGNAL_URG; | |
1075 | #endif | |
1076 | #if defined (SIGIO) | |
1077 | if (hostsig == SIGIO) return TARGET_SIGNAL_IO; | |
1078 | #endif | |
1079 | #if defined (SIGPOLL) | |
1080 | if (hostsig == SIGPOLL) return TARGET_SIGNAL_POLL; | |
1081 | #endif | |
1082 | #if defined (SIGSTOP) | |
1083 | if (hostsig == SIGSTOP) return TARGET_SIGNAL_STOP; | |
1084 | #endif | |
1085 | #if defined (SIGTSTP) | |
1086 | if (hostsig == SIGTSTP) return TARGET_SIGNAL_TSTP; | |
1087 | #endif | |
1088 | #if defined (SIGCONT) | |
1089 | if (hostsig == SIGCONT) return TARGET_SIGNAL_CONT; | |
1090 | #endif | |
1091 | #if defined (SIGTTIN) | |
1092 | if (hostsig == SIGTTIN) return TARGET_SIGNAL_TTIN; | |
1093 | #endif | |
1094 | #if defined (SIGTTOU) | |
1095 | if (hostsig == SIGTTOU) return TARGET_SIGNAL_TTOU; | |
1096 | #endif | |
1097 | #if defined (SIGVTALRM) | |
1098 | if (hostsig == SIGVTALRM) return TARGET_SIGNAL_VTALRM; | |
1099 | #endif | |
1100 | #if defined (SIGPROF) | |
1101 | if (hostsig == SIGPROF) return TARGET_SIGNAL_PROF; | |
1102 | #endif | |
1103 | #if defined (SIGXCPU) | |
1104 | if (hostsig == SIGXCPU) return TARGET_SIGNAL_XCPU; | |
1105 | #endif | |
1106 | #if defined (SIGXFSZ) | |
1107 | if (hostsig == SIGXFSZ) return TARGET_SIGNAL_XFSZ; | |
1108 | #endif | |
1109 | #if defined (SIGWIND) | |
1110 | if (hostsig == SIGWIND) return TARGET_SIGNAL_WIND; | |
1111 | #endif | |
1112 | #if defined (SIGPHONE) | |
1113 | if (hostsig == SIGPHONE) return TARGET_SIGNAL_PHONE; | |
1114 | #endif | |
1115 | #if defined (SIGLOST) | |
1116 | if (hostsig == SIGLOST) return TARGET_SIGNAL_LOST; | |
1117 | #endif | |
1118 | #if defined (SIGWAITING) | |
1119 | if (hostsig == SIGWAITING) return TARGET_SIGNAL_WAITING; | |
1120 | #endif | |
1121 | #if defined (SIGLWP) | |
1122 | if (hostsig == SIGLWP) return TARGET_SIGNAL_LWP; | |
1123 | #endif | |
1124 | #if defined (SIGDANGER) | |
1125 | if (hostsig == SIGDANGER) return TARGET_SIGNAL_DANGER; | |
1126 | #endif | |
1127 | #if defined (SIGGRANT) | |
1128 | if (hostsig == SIGGRANT) return TARGET_SIGNAL_GRANT; | |
1129 | #endif | |
1130 | #if defined (SIGRETRACT) | |
1131 | if (hostsig == SIGRETRACT) return TARGET_SIGNAL_RETRACT; | |
1132 | #endif | |
1133 | #if defined (SIGMSG) | |
1134 | if (hostsig == SIGMSG) return TARGET_SIGNAL_MSG; | |
1135 | #endif | |
1136 | #if defined (SIGSOUND) | |
1137 | if (hostsig == SIGSOUND) return TARGET_SIGNAL_SOUND; | |
1138 | #endif | |
1139 | #if defined (SIGSAK) | |
1140 | if (hostsig == SIGSAK) return TARGET_SIGNAL_SAK; | |
1141 | #endif | |
1142 | return TARGET_SIGNAL_UNKNOWN; | |
1143 | } | |
1144 | ||
1145 | int | |
1146 | target_signal_to_host (oursig) | |
1147 | enum target_signal oursig; | |
1148 | { | |
1149 | switch (oursig) | |
1150 | { | |
1151 | case TARGET_SIGNAL_0: return 0; | |
1152 | ||
1153 | #if defined (SIGHUP) | |
1154 | case TARGET_SIGNAL_HUP: return SIGHUP; | |
1155 | #endif | |
1156 | #if defined (SIGINT) | |
1157 | case TARGET_SIGNAL_INT: return SIGINT; | |
1158 | #endif | |
1159 | #if defined (SIGQUIT) | |
1160 | case TARGET_SIGNAL_QUIT: return SIGQUIT; | |
1161 | #endif | |
1162 | #if defined (SIGILL) | |
1163 | case TARGET_SIGNAL_ILL: return SIGILL; | |
1164 | #endif | |
1165 | #if defined (SIGTRAP) | |
1166 | case TARGET_SIGNAL_TRAP: return SIGTRAP; | |
1167 | #endif | |
1168 | #if defined (SIGABRT) | |
1169 | case TARGET_SIGNAL_ABRT: return SIGABRT; | |
1170 | #endif | |
1171 | #if defined (SIGEMT) | |
1172 | case TARGET_SIGNAL_EMT: return SIGEMT; | |
1173 | #endif | |
1174 | #if defined (SIGFPE) | |
1175 | case TARGET_SIGNAL_FPE: return SIGFPE; | |
1176 | #endif | |
1177 | #if defined (SIGKILL) | |
1178 | case TARGET_SIGNAL_KILL: return SIGKILL; | |
1179 | #endif | |
1180 | #if defined (SIGBUS) | |
1181 | case TARGET_SIGNAL_BUS: return SIGBUS; | |
1182 | #endif | |
1183 | #if defined (SIGSEGV) | |
1184 | case TARGET_SIGNAL_SEGV: return SIGSEGV; | |
1185 | #endif | |
1186 | #if defined (SIGSYS) | |
1187 | case TARGET_SIGNAL_SYS: return SIGSYS; | |
1188 | #endif | |
1189 | #if defined (SIGPIPE) | |
1190 | case TARGET_SIGNAL_PIPE: return SIGPIPE; | |
1191 | #endif | |
1192 | #if defined (SIGALRM) | |
1193 | case TARGET_SIGNAL_ALRM: return SIGALRM; | |
1194 | #endif | |
1195 | #if defined (SIGTERM) | |
1196 | case TARGET_SIGNAL_TERM: return SIGTERM; | |
1197 | #endif | |
1198 | #if defined (SIGUSR1) | |
1199 | case TARGET_SIGNAL_USR1: return SIGUSR1; | |
1200 | #endif | |
1201 | #if defined (SIGUSR2) | |
1202 | case TARGET_SIGNAL_USR2: return SIGUSR2; | |
1203 | #endif | |
1204 | #if defined (SIGCHLD) || defined (SIGCLD) | |
1205 | case TARGET_SIGNAL_CHLD: | |
1206 | #if defined (SIGCHLD) | |
1207 | return SIGCHLD; | |
1208 | #else | |
1209 | return SIGCLD; | |
1210 | #endif | |
1211 | #endif /* SIGCLD or SIGCHLD */ | |
1212 | #if defined (SIGPWR) | |
1213 | case TARGET_SIGNAL_PWR: return SIGPWR; | |
1214 | #endif | |
1215 | #if defined (SIGWINCH) | |
1216 | case TARGET_SIGNAL_WINCH: return SIGWINCH; | |
1217 | #endif | |
1218 | #if defined (SIGURG) | |
1219 | case TARGET_SIGNAL_URG: return SIGURG; | |
1220 | #endif | |
1221 | #if defined (SIGIO) | |
1222 | case TARGET_SIGNAL_IO: return SIGIO; | |
1223 | #endif | |
1224 | #if defined (SIGPOLL) | |
1225 | case TARGET_SIGNAL_POLL: return SIGPOLL; | |
1226 | #endif | |
1227 | #if defined (SIGSTOP) | |
1228 | case TARGET_SIGNAL_STOP: return SIGSTOP; | |
1229 | #endif | |
1230 | #if defined (SIGTSTP) | |
1231 | case TARGET_SIGNAL_TSTP: return SIGTSTP; | |
1232 | #endif | |
1233 | #if defined (SIGCONT) | |
1234 | case TARGET_SIGNAL_CONT: return SIGCONT; | |
1235 | #endif | |
1236 | #if defined (SIGTTIN) | |
1237 | case TARGET_SIGNAL_TTIN: return SIGTTIN; | |
1238 | #endif | |
1239 | #if defined (SIGTTOU) | |
1240 | case TARGET_SIGNAL_TTOU: return SIGTTOU; | |
1241 | #endif | |
1242 | #if defined (SIGVTALRM) | |
1243 | case TARGET_SIGNAL_VTALRM: return SIGVTALRM; | |
1244 | #endif | |
1245 | #if defined (SIGPROF) | |
1246 | case TARGET_SIGNAL_PROF: return SIGPROF; | |
1247 | #endif | |
1248 | #if defined (SIGXCPU) | |
1249 | case TARGET_SIGNAL_XCPU: return SIGXCPU; | |
1250 | #endif | |
1251 | #if defined (SIGXFSZ) | |
1252 | case TARGET_SIGNAL_XFSZ: return SIGXFSZ; | |
1253 | #endif | |
1254 | #if defined (SIGWIND) | |
1255 | case TARGET_SIGNAL_WIND: return SIGWIND; | |
1256 | #endif | |
1257 | #if defined (SIGPHONE) | |
1258 | case TARGET_SIGNAL_PHONE: return SIGPHONE; | |
1259 | #endif | |
1260 | #if defined (SIGLOST) | |
1261 | case TARGET_SIGNAL_LOST: return SIGLOST; | |
1262 | #endif | |
1263 | #if defined (SIGWAITING) | |
1264 | case TARGET_SIGNAL_WAITING: return SIGWAITING; | |
1265 | #endif | |
1266 | #if defined (SIGLWP) | |
1267 | case TARGET_SIGNAL_LWP: return SIGLWP; | |
1268 | #endif | |
1269 | #if defined (SIGDANGER) | |
1270 | case TARGET_SIGNAL_DANGER: return SIGDANGER; | |
1271 | #endif | |
1272 | #if defined (SIGGRANT) | |
1273 | case TARGET_SIGNAL_GRANT: return SIGGRANT; | |
1274 | #endif | |
1275 | #if defined (SIGRETRACT) | |
1276 | case TARGET_SIGNAL_RETRACT: return SIGRETRACT; | |
1277 | #endif | |
1278 | #if defined (SIGMSG) | |
1279 | case TARGET_SIGNAL_MSG: return SIGMSG; | |
1280 | #endif | |
1281 | #if defined (SIGSOUND) | |
1282 | case TARGET_SIGNAL_SOUND: return SIGSOUND; | |
1283 | #endif | |
1284 | #if defined (SIGSAK) | |
1285 | case TARGET_SIGNAL_SAK: return SIGSAK; | |
1286 | #endif | |
1287 | default: | |
1288 | /* The user might be trying to do "signal SIGSAK" where this system | |
1289 | doesn't have SIGSAK. */ | |
1290 | warning ("Signal %s does not exist on this system.\n", | |
1291 | target_signal_to_name (oursig)); | |
1292 | return 0; | |
1293 | } | |
1294 | } | |
1295 | ||
1296 | /* Helper function for child_wait and the Lynx derivatives of child_wait. | |
1297 | HOSTSTATUS is the waitstatus from wait() or the equivalent; store our | |
1298 | translation of that in OURSTATUS. */ | |
1299 | void | |
1300 | store_waitstatus (ourstatus, hoststatus) | |
1301 | struct target_waitstatus *ourstatus; | |
1302 | int hoststatus; | |
1303 | { | |
1304 | #ifdef CHILD_SPECIAL_WAITSTATUS | |
1305 | /* CHILD_SPECIAL_WAITSTATUS should return nonzero and set *OURSTATUS | |
1306 | if it wants to deal with hoststatus. */ | |
1307 | if (CHILD_SPECIAL_WAITSTATUS (ourstatus, hoststatus)) | |
1308 | return; | |
1309 | #endif | |
1310 | ||
1311 | if (WIFEXITED (hoststatus)) | |
1312 | { | |
1313 | ourstatus->kind = TARGET_WAITKIND_EXITED; | |
1314 | ourstatus->value.integer = WEXITSTATUS (hoststatus); | |
1315 | } | |
1316 | else if (!WIFSTOPPED (hoststatus)) | |
1317 | { | |
1318 | ourstatus->kind = TARGET_WAITKIND_SIGNALLED; | |
1319 | ourstatus->value.sig = target_signal_from_host (WTERMSIG (hoststatus)); | |
1320 | } | |
1321 | else | |
1322 | { | |
1323 | ourstatus->kind = TARGET_WAITKIND_STOPPED; | |
1324 | ourstatus->value.sig = target_signal_from_host (WSTOPSIG (hoststatus)); | |
1325 | } | |
1326 | } | |
1327 | ||
cad1498f SG |
1328 | \f |
1329 | /* Returns zero to leave the inferior alone, one to interrupt it. */ | |
1330 | int (*target_activity_function) PARAMS ((void)); | |
1331 | int target_activity_fd; | |
67ac9759 | 1332 | \f |
49781499 JK |
1333 | /* Convert a normal process ID to a string. Returns the string in a static |
1334 | buffer. */ | |
1335 | ||
1336 | char * | |
1337 | normal_pid_to_str (pid) | |
1338 | int pid; | |
1339 | { | |
1340 | static char buf[30]; | |
1341 | ||
1342 | sprintf (buf, "process %d", pid); | |
1343 | ||
1344 | return buf; | |
1345 | } | |
67ac9759 | 1346 | \f |
bd5635a1 RP |
1347 | static char targ_desc[] = |
1348 | "Names of targets and files being debugged.\n\ | |
1349 | Shows the entire stack of targets currently in use (including the exec-file,\n\ | |
1350 | core-file, and process, if any), as well as the symbol file name."; | |
1351 | ||
1352 | void | |
4fc5969d | 1353 | initialize_targets () |
bd5635a1 | 1354 | { |
cad1498f | 1355 | push_target (&dummy_target); |
bd5635a1 | 1356 | |
bd5635a1 RP |
1357 | add_info ("target", target_info, targ_desc); |
1358 | add_info ("files", target_info, targ_desc); | |
67ac9759 JK |
1359 | |
1360 | if (!STREQ (signals[TARGET_SIGNAL_LAST].string, "TARGET_SIGNAL_MAGIC")) | |
1361 | abort (); | |
bd5635a1 | 1362 | } |