Commit | Line | Data |
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c906108c | 1 | /* Select target systems and architectures at runtime for GDB. |
7998dfc3 | 2 | |
b811d2c2 | 3 | Copyright (C) 1990-2020 Free Software Foundation, Inc. |
7998dfc3 | 4 | |
c906108c SS |
5 | Contributed by Cygnus Support. |
6 | ||
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 12 | (at your option) any later version. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b | 19 | You should have received a copy of the GNU General Public License |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
21 | |
22 | #include "defs.h" | |
c906108c | 23 | #include "target.h" |
68c765e2 | 24 | #include "target-dcache.h" |
c906108c SS |
25 | #include "gdbcmd.h" |
26 | #include "symtab.h" | |
27 | #include "inferior.h" | |
45741a9c | 28 | #include "infrun.h" |
c906108c SS |
29 | #include "bfd.h" |
30 | #include "symfile.h" | |
31 | #include "objfiles.h" | |
4930751a | 32 | #include "dcache.h" |
c906108c | 33 | #include <signal.h> |
4e052eda | 34 | #include "regcache.h" |
b6591e8b | 35 | #include "gdbcore.h" |
424163ea | 36 | #include "target-descriptions.h" |
e1ac3328 | 37 | #include "gdbthread.h" |
b9db4ced | 38 | #include "solib.h" |
07b82ea5 | 39 | #include "exec.h" |
edb3359d | 40 | #include "inline-frame.h" |
2f4d8875 | 41 | #include "tracepoint.h" |
7313baad | 42 | #include "gdb/fileio.h" |
268a13a5 | 43 | #include "gdbsupport/agent.h" |
8de71aab | 44 | #include "auxv.h" |
a7068b60 | 45 | #include "target-debug.h" |
41fd2b0f PA |
46 | #include "top.h" |
47 | #include "event-top.h" | |
325fac50 | 48 | #include <algorithm> |
268a13a5 | 49 | #include "gdbsupport/byte-vector.h" |
4a72de73 | 50 | #include "gdbsupport/search.h" |
e671cd59 | 51 | #include "terminal.h" |
d9f719f1 | 52 | #include <unordered_map> |
121b3efd | 53 | #include "target-connection.h" |
670e35fa | 54 | #include "valprint.h" |
c906108c | 55 | |
f0f9ff95 TT |
56 | static void generic_tls_error (void) ATTRIBUTE_NORETURN; |
57 | ||
0a4f40a2 | 58 | static void default_terminal_info (struct target_ops *, const char *, int); |
c906108c | 59 | |
5009afc5 AS |
60 | static int default_watchpoint_addr_within_range (struct target_ops *, |
61 | CORE_ADDR, CORE_ADDR, int); | |
62 | ||
31568a15 TT |
63 | static int default_region_ok_for_hw_watchpoint (struct target_ops *, |
64 | CORE_ADDR, int); | |
e0d24f8d | 65 | |
a30bf1f1 | 66 | static void default_rcmd (struct target_ops *, const char *, struct ui_file *); |
a53f3625 | 67 | |
4229b31d TT |
68 | static ptid_t default_get_ada_task_ptid (struct target_ops *self, |
69 | long lwp, long tid); | |
70 | ||
8d657035 TT |
71 | static void default_mourn_inferior (struct target_ops *self); |
72 | ||
58a5184e TT |
73 | static int default_search_memory (struct target_ops *ops, |
74 | CORE_ADDR start_addr, | |
75 | ULONGEST search_space_len, | |
76 | const gdb_byte *pattern, | |
77 | ULONGEST pattern_len, | |
78 | CORE_ADDR *found_addrp); | |
79 | ||
936d2992 PA |
80 | static int default_verify_memory (struct target_ops *self, |
81 | const gdb_byte *data, | |
82 | CORE_ADDR memaddr, ULONGEST size); | |
83 | ||
c25c4a8b | 84 | static void tcomplain (void) ATTRIBUTE_NORETURN; |
c906108c | 85 | |
a121b7c1 | 86 | static struct target_ops *find_default_run_target (const char *); |
c906108c | 87 | |
0b5a2719 TT |
88 | static int dummy_find_memory_regions (struct target_ops *self, |
89 | find_memory_region_ftype ignore1, | |
90 | void *ignore2); | |
91 | ||
24f5300a SM |
92 | static gdb::unique_xmalloc_ptr<char> dummy_make_corefile_notes |
93 | (struct target_ops *self, bfd *ignore1, int *ignore2); | |
16f796b1 | 94 | |
a068643d | 95 | static std::string default_pid_to_str (struct target_ops *ops, ptid_t ptid); |
770234d3 | 96 | |
fe31bf5b TT |
97 | static enum exec_direction_kind default_execution_direction |
98 | (struct target_ops *self); | |
99 | ||
d9f719f1 PA |
100 | /* Mapping between target_info objects (which have address identity) |
101 | and corresponding open/factory function/callback. Each add_target | |
102 | call adds one entry to this map, and registers a "target | |
103 | TARGET_NAME" command that when invoked calls the factory registered | |
104 | here. The target_info object is associated with the command via | |
105 | the command's context. */ | |
106 | static std::unordered_map<const target_info *, target_open_ftype *> | |
107 | target_factories; | |
c906108c | 108 | |
06b5b831 | 109 | /* The singleton debug target. */ |
c906108c | 110 | |
f6ac5f3d | 111 | static struct target_ops *the_debug_target; |
c906108c SS |
112 | |
113 | /* Top of target stack. */ | |
c906108c SS |
114 | /* The target structure we are currently using to talk to a process |
115 | or file or whatever "inferior" we have. */ | |
116 | ||
8b88a78e PA |
117 | target_ops * |
118 | current_top_target () | |
119 | { | |
5b6d1e4f | 120 | return current_inferior ()->top_target (); |
8b88a78e | 121 | } |
c906108c SS |
122 | |
123 | /* Command list for target. */ | |
124 | ||
125 | static struct cmd_list_element *targetlist = NULL; | |
126 | ||
491144b5 | 127 | /* True if we should trust readonly sections from the |
cf7a04e8 DJ |
128 | executable when reading memory. */ |
129 | ||
491144b5 | 130 | static bool trust_readonly = false; |
cf7a04e8 | 131 | |
8defab1a DJ |
132 | /* Nonzero if we should show true memory content including |
133 | memory breakpoint inserted by gdb. */ | |
134 | ||
135 | static int show_memory_breakpoints = 0; | |
136 | ||
d914c394 SS |
137 | /* These globals control whether GDB attempts to perform these |
138 | operations; they are useful for targets that need to prevent | |
30baf67b | 139 | inadvertent disruption, such as in non-stop mode. */ |
d914c394 | 140 | |
491144b5 | 141 | bool may_write_registers = true; |
d914c394 | 142 | |
491144b5 | 143 | bool may_write_memory = true; |
d914c394 | 144 | |
491144b5 | 145 | bool may_insert_breakpoints = true; |
d914c394 | 146 | |
491144b5 | 147 | bool may_insert_tracepoints = true; |
d914c394 | 148 | |
491144b5 | 149 | bool may_insert_fast_tracepoints = true; |
d914c394 | 150 | |
491144b5 | 151 | bool may_stop = true; |
d914c394 | 152 | |
c906108c SS |
153 | /* Non-zero if we want to see trace of target level stuff. */ |
154 | ||
ccce17b0 | 155 | static unsigned int targetdebug = 0; |
3cecbbbe TT |
156 | |
157 | static void | |
eb4c3f4a | 158 | set_targetdebug (const char *args, int from_tty, struct cmd_list_element *c) |
3cecbbbe | 159 | { |
f6ac5f3d PA |
160 | if (targetdebug) |
161 | push_target (the_debug_target); | |
162 | else | |
163 | unpush_target (the_debug_target); | |
3cecbbbe TT |
164 | } |
165 | ||
920d2a44 AC |
166 | static void |
167 | show_targetdebug (struct ui_file *file, int from_tty, | |
168 | struct cmd_list_element *c, const char *value) | |
169 | { | |
170 | fprintf_filtered (file, _("Target debugging is %s.\n"), value); | |
171 | } | |
c906108c | 172 | |
c35b1492 | 173 | int |
a739972c | 174 | target_has_memory () |
c35b1492 | 175 | { |
b6a8c27b | 176 | for (target_ops *t = current_top_target (); t != NULL; t = t->beneath ()) |
f6ac5f3d | 177 | if (t->has_memory ()) |
c35b1492 PA |
178 | return 1; |
179 | ||
180 | return 0; | |
181 | } | |
182 | ||
183 | int | |
841de120 | 184 | target_has_stack () |
c35b1492 | 185 | { |
b6a8c27b | 186 | for (target_ops *t = current_top_target (); t != NULL; t = t->beneath ()) |
f6ac5f3d | 187 | if (t->has_stack ()) |
c35b1492 PA |
188 | return 1; |
189 | ||
190 | return 0; | |
191 | } | |
192 | ||
193 | int | |
9dccd06e | 194 | target_has_registers () |
c35b1492 | 195 | { |
b6a8c27b | 196 | for (target_ops *t = current_top_target (); t != NULL; t = t->beneath ()) |
f6ac5f3d | 197 | if (t->has_registers ()) |
c35b1492 PA |
198 | return 1; |
199 | ||
200 | return 0; | |
201 | } | |
202 | ||
5018ce90 | 203 | bool |
55f6301a | 204 | target_has_execution (inferior *inf) |
c35b1492 | 205 | { |
55f6301a TT |
206 | if (inf == nullptr) |
207 | inf = current_inferior (); | |
208 | ||
5b6d1e4f PA |
209 | for (target_ops *t = inf->top_target (); |
210 | t != nullptr; | |
211 | t = inf->find_target_beneath (t)) | |
5018ce90 PA |
212 | if (t->has_execution (inf)) |
213 | return true; | |
c35b1492 | 214 | |
5018ce90 | 215 | return false; |
c35b1492 PA |
216 | } |
217 | ||
8981c758 TT |
218 | /* This is used to implement the various target commands. */ |
219 | ||
220 | static void | |
eb4c3f4a | 221 | open_target (const char *args, int from_tty, struct cmd_list_element *command) |
8981c758 | 222 | { |
d9f719f1 PA |
223 | auto *ti = static_cast<target_info *> (get_cmd_context (command)); |
224 | target_open_ftype *func = target_factories[ti]; | |
8981c758 TT |
225 | |
226 | if (targetdebug) | |
d9f719f1 PA |
227 | fprintf_unfiltered (gdb_stdlog, "-> %s->open (...)\n", |
228 | ti->shortname); | |
8981c758 | 229 | |
d9f719f1 | 230 | func (args, from_tty); |
8981c758 TT |
231 | |
232 | if (targetdebug) | |
d9f719f1 PA |
233 | fprintf_unfiltered (gdb_stdlog, "<- %s->open (%s, %d)\n", |
234 | ti->shortname, args, from_tty); | |
8981c758 TT |
235 | } |
236 | ||
d9f719f1 | 237 | /* See target.h. */ |
c22a2b88 TT |
238 | |
239 | void | |
d9f719f1 PA |
240 | add_target (const target_info &t, target_open_ftype *func, |
241 | completer_ftype *completer) | |
c22a2b88 TT |
242 | { |
243 | struct cmd_list_element *c; | |
244 | ||
d9f719f1 PA |
245 | auto &func_slot = target_factories[&t]; |
246 | if (func_slot != nullptr) | |
247 | internal_error (__FILE__, __LINE__, | |
248 | _("target already added (\"%s\")."), t.shortname); | |
249 | func_slot = func; | |
c906108c SS |
250 | |
251 | if (targetlist == NULL) | |
3b6acaee | 252 | add_basic_prefix_cmd ("target", class_run, _("\ |
1bedd215 | 253 | Connect to a target machine or process.\n\ |
c906108c SS |
254 | The first argument is the type or protocol of the target machine.\n\ |
255 | Remaining arguments are interpreted by the target protocol. For more\n\ | |
256 | information on the arguments for a particular protocol, type\n\ | |
1bedd215 | 257 | `help target ' followed by the protocol name."), |
3b6acaee | 258 | &targetlist, "target ", 0, &cmdlist); |
d9f719f1 PA |
259 | c = add_cmd (t.shortname, no_class, t.doc, &targetlist); |
260 | set_cmd_context (c, (void *) &t); | |
8981c758 | 261 | set_cmd_sfunc (c, open_target); |
9852c492 YQ |
262 | if (completer != NULL) |
263 | set_cmd_completer (c, completer); | |
264 | } | |
265 | ||
b48d48eb MM |
266 | /* See target.h. */ |
267 | ||
268 | void | |
d9f719f1 | 269 | add_deprecated_target_alias (const target_info &tinfo, const char *alias) |
b48d48eb MM |
270 | { |
271 | struct cmd_list_element *c; | |
272 | char *alt; | |
273 | ||
274 | /* If we use add_alias_cmd, here, we do not get the deprecated warning, | |
275 | see PR cli/15104. */ | |
d9f719f1 | 276 | c = add_cmd (alias, no_class, tinfo.doc, &targetlist); |
8981c758 | 277 | set_cmd_sfunc (c, open_target); |
d9f719f1 PA |
278 | set_cmd_context (c, (void *) &tinfo); |
279 | alt = xstrprintf ("target %s", tinfo.shortname); | |
b48d48eb MM |
280 | deprecate_cmd (c, alt); |
281 | } | |
282 | ||
c906108c SS |
283 | /* Stub functions */ |
284 | ||
7d85a9c0 JB |
285 | void |
286 | target_kill (void) | |
287 | { | |
8b88a78e | 288 | current_top_target ()->kill (); |
7d85a9c0 JB |
289 | } |
290 | ||
11cf8741 | 291 | void |
9cbe5fff | 292 | target_load (const char *arg, int from_tty) |
11cf8741 | 293 | { |
4e5d721f | 294 | target_dcache_invalidate (); |
8b88a78e | 295 | current_top_target ()->load (arg, from_tty); |
11cf8741 JM |
296 | } |
297 | ||
223ffa71 | 298 | /* Define it. */ |
5842f62a | 299 | |
e671cd59 PA |
300 | target_terminal_state target_terminal::m_terminal_state |
301 | = target_terminal_state::is_ours; | |
5842f62a | 302 | |
223ffa71 | 303 | /* See target/target.h. */ |
5842f62a PA |
304 | |
305 | void | |
223ffa71 | 306 | target_terminal::init (void) |
5842f62a | 307 | { |
8b88a78e | 308 | current_top_target ()->terminal_init (); |
5842f62a | 309 | |
e671cd59 | 310 | m_terminal_state = target_terminal_state::is_ours; |
5842f62a PA |
311 | } |
312 | ||
223ffa71 | 313 | /* See target/target.h. */ |
2f99e8fc | 314 | |
d9d2d8b6 | 315 | void |
223ffa71 | 316 | target_terminal::inferior (void) |
d9d2d8b6 | 317 | { |
41fd2b0f PA |
318 | struct ui *ui = current_ui; |
319 | ||
d9d2d8b6 | 320 | /* A background resume (``run&'') should leave GDB in control of the |
3b12939d PA |
321 | terminal. */ |
322 | if (ui->prompt_state != PROMPT_BLOCKED) | |
d9d2d8b6 PA |
323 | return; |
324 | ||
215d3118 PA |
325 | /* Since we always run the inferior in the main console (unless "set |
326 | inferior-tty" is in effect), when some UI other than the main one | |
223ffa71 TT |
327 | calls target_terminal::inferior, then we leave the main UI's |
328 | terminal settings as is. */ | |
215d3118 PA |
329 | if (ui != main_ui) |
330 | return; | |
331 | ||
d9d2d8b6 PA |
332 | /* If GDB is resuming the inferior in the foreground, install |
333 | inferior's terminal modes. */ | |
e671cd59 PA |
334 | |
335 | struct inferior *inf = current_inferior (); | |
336 | ||
337 | if (inf->terminal_state != target_terminal_state::is_inferior) | |
338 | { | |
8b88a78e | 339 | current_top_target ()->terminal_inferior (); |
e671cd59 PA |
340 | inf->terminal_state = target_terminal_state::is_inferior; |
341 | } | |
342 | ||
343 | m_terminal_state = target_terminal_state::is_inferior; | |
344 | ||
345 | /* If the user hit C-c before, pretend that it was hit right | |
346 | here. */ | |
347 | if (check_quit_flag ()) | |
348 | target_pass_ctrlc (); | |
349 | } | |
350 | ||
351 | /* See target/target.h. */ | |
352 | ||
353 | void | |
354 | target_terminal::restore_inferior (void) | |
355 | { | |
356 | struct ui *ui = current_ui; | |
357 | ||
358 | /* See target_terminal::inferior(). */ | |
359 | if (ui->prompt_state != PROMPT_BLOCKED || ui != main_ui) | |
360 | return; | |
361 | ||
362 | /* Restore the terminal settings of inferiors that were in the | |
363 | foreground but are now ours_for_output due to a temporary | |
364 | target_target::ours_for_output() call. */ | |
365 | ||
366 | { | |
367 | scoped_restore_current_inferior restore_inferior; | |
e671cd59 | 368 | |
84b68c77 | 369 | for (::inferior *inf : all_inferiors ()) |
e671cd59 PA |
370 | { |
371 | if (inf->terminal_state == target_terminal_state::is_ours_for_output) | |
372 | { | |
373 | set_current_inferior (inf); | |
8b88a78e | 374 | current_top_target ()->terminal_inferior (); |
e671cd59 PA |
375 | inf->terminal_state = target_terminal_state::is_inferior; |
376 | } | |
377 | } | |
378 | } | |
379 | ||
380 | m_terminal_state = target_terminal_state::is_inferior; | |
93692b58 PA |
381 | |
382 | /* If the user hit C-c before, pretend that it was hit right | |
383 | here. */ | |
384 | if (check_quit_flag ()) | |
385 | target_pass_ctrlc (); | |
5842f62a PA |
386 | } |
387 | ||
e671cd59 PA |
388 | /* Switch terminal state to DESIRED_STATE, either is_ours, or |
389 | is_ours_for_output. */ | |
390 | ||
391 | static void | |
392 | target_terminal_is_ours_kind (target_terminal_state desired_state) | |
393 | { | |
394 | scoped_restore_current_inferior restore_inferior; | |
e671cd59 PA |
395 | |
396 | /* Must do this in two passes. First, have all inferiors save the | |
397 | current terminal settings. Then, after all inferiors have add a | |
398 | chance to safely save the terminal settings, restore GDB's | |
399 | terminal settings. */ | |
400 | ||
08036331 | 401 | for (inferior *inf : all_inferiors ()) |
e671cd59 PA |
402 | { |
403 | if (inf->terminal_state == target_terminal_state::is_inferior) | |
404 | { | |
405 | set_current_inferior (inf); | |
8b88a78e | 406 | current_top_target ()->terminal_save_inferior (); |
e671cd59 PA |
407 | } |
408 | } | |
409 | ||
08036331 | 410 | for (inferior *inf : all_inferiors ()) |
e671cd59 PA |
411 | { |
412 | /* Note we don't check is_inferior here like above because we | |
413 | need to handle 'is_ours_for_output -> is_ours' too. Careful | |
414 | to never transition from 'is_ours' to 'is_ours_for_output', | |
415 | though. */ | |
416 | if (inf->terminal_state != target_terminal_state::is_ours | |
417 | && inf->terminal_state != desired_state) | |
418 | { | |
419 | set_current_inferior (inf); | |
420 | if (desired_state == target_terminal_state::is_ours) | |
8b88a78e | 421 | current_top_target ()->terminal_ours (); |
e671cd59 | 422 | else if (desired_state == target_terminal_state::is_ours_for_output) |
8b88a78e | 423 | current_top_target ()->terminal_ours_for_output (); |
e671cd59 PA |
424 | else |
425 | gdb_assert_not_reached ("unhandled desired state"); | |
426 | inf->terminal_state = desired_state; | |
427 | } | |
428 | } | |
429 | } | |
430 | ||
223ffa71 | 431 | /* See target/target.h. */ |
5842f62a PA |
432 | |
433 | void | |
223ffa71 | 434 | target_terminal::ours () |
5842f62a | 435 | { |
41fd2b0f PA |
436 | struct ui *ui = current_ui; |
437 | ||
223ffa71 | 438 | /* See target_terminal::inferior. */ |
215d3118 PA |
439 | if (ui != main_ui) |
440 | return; | |
441 | ||
e671cd59 | 442 | if (m_terminal_state == target_terminal_state::is_ours) |
5842f62a PA |
443 | return; |
444 | ||
e671cd59 PA |
445 | target_terminal_is_ours_kind (target_terminal_state::is_ours); |
446 | m_terminal_state = target_terminal_state::is_ours; | |
5842f62a PA |
447 | } |
448 | ||
223ffa71 | 449 | /* See target/target.h. */ |
5842f62a PA |
450 | |
451 | void | |
223ffa71 | 452 | target_terminal::ours_for_output () |
5842f62a | 453 | { |
215d3118 PA |
454 | struct ui *ui = current_ui; |
455 | ||
223ffa71 | 456 | /* See target_terminal::inferior. */ |
215d3118 PA |
457 | if (ui != main_ui) |
458 | return; | |
459 | ||
e671cd59 | 460 | if (!target_terminal::is_inferior ()) |
5842f62a | 461 | return; |
e671cd59 PA |
462 | |
463 | target_terminal_is_ours_kind (target_terminal_state::is_ours_for_output); | |
464 | target_terminal::m_terminal_state = target_terminal_state::is_ours_for_output; | |
d9d2d8b6 | 465 | } |
136d6dae | 466 | |
223ffa71 TT |
467 | /* See target/target.h. */ |
468 | ||
469 | void | |
470 | target_terminal::info (const char *arg, int from_tty) | |
471 | { | |
8b88a78e | 472 | current_top_target ()->terminal_info (arg, from_tty); |
223ffa71 TT |
473 | } |
474 | ||
b0ed115f TT |
475 | /* See target.h. */ |
476 | ||
20f0d60d | 477 | bool |
b0ed115f TT |
478 | target_supports_terminal_ours (void) |
479 | { | |
5b6d1e4f PA |
480 | /* The current top target is the target at the top of the target |
481 | stack of the current inferior. While normally there's always an | |
482 | inferior, we must check for nullptr here because we can get here | |
483 | very early during startup, before the initial inferior is first | |
484 | created. */ | |
485 | inferior *inf = current_inferior (); | |
20f0d60d | 486 | |
5b6d1e4f | 487 | if (inf == nullptr) |
20f0d60d | 488 | return false; |
5b6d1e4f | 489 | return inf->top_target ()->supports_terminal_ours (); |
b0ed115f TT |
490 | } |
491 | ||
c906108c | 492 | static void |
fba45db2 | 493 | tcomplain (void) |
c906108c | 494 | { |
8a3fe4f8 | 495 | error (_("You can't do that when your target is `%s'"), |
8b88a78e | 496 | current_top_target ()->shortname ()); |
c906108c SS |
497 | } |
498 | ||
499 | void | |
fba45db2 | 500 | noprocess (void) |
c906108c | 501 | { |
8a3fe4f8 | 502 | error (_("You can't do that without a process to debug.")); |
c906108c SS |
503 | } |
504 | ||
c906108c | 505 | static void |
0a4f40a2 | 506 | default_terminal_info (struct target_ops *self, const char *args, int from_tty) |
c906108c | 507 | { |
a3f17187 | 508 | printf_unfiltered (_("No saved terminal information.\n")); |
c906108c SS |
509 | } |
510 | ||
0ef643c8 JB |
511 | /* A default implementation for the to_get_ada_task_ptid target method. |
512 | ||
513 | This function builds the PTID by using both LWP and TID as part of | |
514 | the PTID lwp and tid elements. The pid used is the pid of the | |
515 | inferior_ptid. */ | |
516 | ||
2c0b251b | 517 | static ptid_t |
1e6b91a4 | 518 | default_get_ada_task_ptid (struct target_ops *self, long lwp, long tid) |
0ef643c8 | 519 | { |
e99b03dc | 520 | return ptid_t (inferior_ptid.pid (), lwp, tid); |
0ef643c8 JB |
521 | } |
522 | ||
32231432 | 523 | static enum exec_direction_kind |
4c612759 | 524 | default_execution_direction (struct target_ops *self) |
32231432 | 525 | { |
05374cfd | 526 | if (!target_can_execute_reverse ()) |
32231432 PA |
527 | return EXEC_FORWARD; |
528 | else if (!target_can_async_p ()) | |
529 | return EXEC_FORWARD; | |
530 | else | |
531 | gdb_assert_not_reached ("\ | |
532 | to_execution_direction must be implemented for reverse async"); | |
533 | } | |
534 | ||
a1740ee1 | 535 | /* See target.h. */ |
c906108c | 536 | |
5b6d1e4f PA |
537 | void |
538 | decref_target (target_ops *t) | |
539 | { | |
540 | t->decref (); | |
541 | if (t->refcount () == 0) | |
121b3efd PA |
542 | { |
543 | if (t->stratum () == process_stratum) | |
544 | connection_list_remove (as_process_stratum_target (t)); | |
545 | target_close (t); | |
546 | } | |
5b6d1e4f PA |
547 | } |
548 | ||
549 | /* See target.h. */ | |
550 | ||
b26a4dcb | 551 | void |
a1740ee1 | 552 | target_stack::push (target_ops *t) |
c906108c | 553 | { |
5b6d1e4f PA |
554 | t->incref (); |
555 | ||
66b4deae PA |
556 | strata stratum = t->stratum (); |
557 | ||
121b3efd PA |
558 | if (stratum == process_stratum) |
559 | connection_list_add (as_process_stratum_target (t)); | |
560 | ||
5b6d1e4f PA |
561 | /* If there's already a target at this stratum, remove it. */ |
562 | ||
66b4deae | 563 | if (m_stack[stratum] != NULL) |
494409bb | 564 | unpush (m_stack[stratum]); |
c906108c | 565 | |
a1740ee1 | 566 | /* Now add the new one. */ |
66b4deae | 567 | m_stack[stratum] = t; |
5d502164 | 568 | |
66b4deae PA |
569 | if (m_top < stratum) |
570 | m_top = stratum; | |
a1740ee1 PA |
571 | } |
572 | ||
573 | /* See target.h. */ | |
c906108c | 574 | |
a1740ee1 PA |
575 | void |
576 | push_target (struct target_ops *t) | |
577 | { | |
5b6d1e4f | 578 | current_inferior ()->push_target (t); |
c906108c SS |
579 | } |
580 | ||
5b6d1e4f | 581 | /* See target.h. */ |
dea57a62 TT |
582 | |
583 | void | |
584 | push_target (target_ops_up &&t) | |
585 | { | |
5b6d1e4f | 586 | current_inferior ()->push_target (t.get ()); |
dea57a62 TT |
587 | t.release (); |
588 | } | |
589 | ||
a1740ee1 | 590 | /* See target.h. */ |
c906108c SS |
591 | |
592 | int | |
fba45db2 | 593 | unpush_target (struct target_ops *t) |
a1740ee1 | 594 | { |
5b6d1e4f | 595 | return current_inferior ()->unpush_target (t); |
a1740ee1 PA |
596 | } |
597 | ||
598 | /* See target.h. */ | |
599 | ||
600 | bool | |
601 | target_stack::unpush (target_ops *t) | |
c906108c | 602 | { |
1688cb29 TT |
603 | gdb_assert (t != NULL); |
604 | ||
66b4deae PA |
605 | strata stratum = t->stratum (); |
606 | ||
607 | if (stratum == dummy_stratum) | |
c8d104ad | 608 | internal_error (__FILE__, __LINE__, |
9b20d036 | 609 | _("Attempt to unpush the dummy target")); |
c8d104ad | 610 | |
a1740ee1 PA |
611 | /* Look for the specified target. Note that a target can only occur |
612 | once in the target stack. */ | |
c906108c | 613 | |
66b4deae | 614 | if (m_stack[stratum] != t) |
258b763a | 615 | { |
a1740ee1 PA |
616 | /* If T wasn't pushed, quit. Only open targets should be |
617 | closed. */ | |
618 | return false; | |
258b763a | 619 | } |
c906108c | 620 | |
c378eb4e | 621 | /* Unchain the target. */ |
66b4deae | 622 | m_stack[stratum] = NULL; |
a1740ee1 | 623 | |
66b4deae PA |
624 | if (m_top == stratum) |
625 | m_top = t->beneath ()->stratum (); | |
c906108c | 626 | |
5b6d1e4f PA |
627 | /* Finally close the target, if there are no inferiors |
628 | referencing this target still. Note we do this after unchaining, | |
629 | so any target method calls from within the target_close | |
630 | implementation don't end up in T anymore. Do leave the target | |
631 | open if we have are other inferiors referencing this target | |
632 | still. */ | |
633 | decref_target (t); | |
305436e0 | 634 | |
a1740ee1 | 635 | return true; |
c906108c SS |
636 | } |
637 | ||
915ef8b1 PA |
638 | /* Unpush TARGET and assert that it worked. */ |
639 | ||
640 | static void | |
641 | unpush_target_and_assert (struct target_ops *target) | |
642 | { | |
643 | if (!unpush_target (target)) | |
644 | { | |
645 | fprintf_unfiltered (gdb_stderr, | |
646 | "pop_all_targets couldn't find target %s\n", | |
f6ac5f3d | 647 | target->shortname ()); |
915ef8b1 PA |
648 | internal_error (__FILE__, __LINE__, |
649 | _("failed internal consistency check")); | |
650 | } | |
651 | } | |
652 | ||
aa76d38d | 653 | void |
460014f5 | 654 | pop_all_targets_above (enum strata above_stratum) |
aa76d38d | 655 | { |
66b4deae | 656 | while ((int) (current_top_target ()->stratum ()) > (int) above_stratum) |
8b88a78e | 657 | unpush_target_and_assert (current_top_target ()); |
915ef8b1 PA |
658 | } |
659 | ||
660 | /* See target.h. */ | |
661 | ||
662 | void | |
663 | pop_all_targets_at_and_above (enum strata stratum) | |
664 | { | |
66b4deae | 665 | while ((int) (current_top_target ()->stratum ()) >= (int) stratum) |
8b88a78e | 666 | unpush_target_and_assert (current_top_target ()); |
aa76d38d PA |
667 | } |
668 | ||
87ab71f0 | 669 | void |
460014f5 | 670 | pop_all_targets (void) |
87ab71f0 | 671 | { |
460014f5 | 672 | pop_all_targets_above (dummy_stratum); |
87ab71f0 PA |
673 | } |
674 | ||
5b6d1e4f PA |
675 | /* Return true if T is now pushed in the current inferior's target |
676 | stack. Return false otherwise. */ | |
c0edd9ed | 677 | |
5b6d1e4f PA |
678 | bool |
679 | target_is_pushed (target_ops *t) | |
c0edd9ed | 680 | { |
5b6d1e4f | 681 | return current_inferior ()->target_is_pushed (t); |
c0edd9ed JK |
682 | } |
683 | ||
f0f9ff95 TT |
684 | /* Default implementation of to_get_thread_local_address. */ |
685 | ||
686 | static void | |
687 | generic_tls_error (void) | |
688 | { | |
689 | throw_error (TLS_GENERIC_ERROR, | |
690 | _("Cannot find thread-local variables on this target")); | |
691 | } | |
692 | ||
72f5cf0e | 693 | /* Using the objfile specified in OBJFILE, find the address for the |
9e35dae4 DJ |
694 | current thread's thread-local storage with offset OFFSET. */ |
695 | CORE_ADDR | |
696 | target_translate_tls_address (struct objfile *objfile, CORE_ADDR offset) | |
697 | { | |
698 | volatile CORE_ADDR addr = 0; | |
8b88a78e | 699 | struct target_ops *target = current_top_target (); |
6e056c81 | 700 | struct gdbarch *gdbarch = target_gdbarch (); |
9e35dae4 | 701 | |
6e056c81 | 702 | if (gdbarch_fetch_tls_load_module_address_p (gdbarch)) |
9e35dae4 DJ |
703 | { |
704 | ptid_t ptid = inferior_ptid; | |
9e35dae4 | 705 | |
a70b8144 | 706 | try |
9e35dae4 DJ |
707 | { |
708 | CORE_ADDR lm_addr; | |
709 | ||
710 | /* Fetch the load module address for this objfile. */ | |
6e056c81 | 711 | lm_addr = gdbarch_fetch_tls_load_module_address (gdbarch, |
dda83cd7 | 712 | objfile); |
9e35dae4 | 713 | |
6e056c81 JB |
714 | if (gdbarch_get_thread_local_address_p (gdbarch)) |
715 | addr = gdbarch_get_thread_local_address (gdbarch, ptid, lm_addr, | |
716 | offset); | |
717 | else | |
718 | addr = target->get_thread_local_address (ptid, lm_addr, offset); | |
9e35dae4 DJ |
719 | } |
720 | /* If an error occurred, print TLS related messages here. Otherwise, | |
dda83cd7 | 721 | throw the error to some higher catcher. */ |
230d2906 | 722 | catch (const gdb_exception &ex) |
9e35dae4 DJ |
723 | { |
724 | int objfile_is_library = (objfile->flags & OBJF_SHARED); | |
725 | ||
726 | switch (ex.error) | |
727 | { | |
728 | case TLS_NO_LIBRARY_SUPPORT_ERROR: | |
3e43a32a MS |
729 | error (_("Cannot find thread-local variables " |
730 | "in this thread library.")); | |
9e35dae4 DJ |
731 | break; |
732 | case TLS_LOAD_MODULE_NOT_FOUND_ERROR: | |
733 | if (objfile_is_library) | |
734 | error (_("Cannot find shared library `%s' in dynamic" | |
dda83cd7 | 735 | " linker's load module list"), objfile_name (objfile)); |
9e35dae4 DJ |
736 | else |
737 | error (_("Cannot find executable file `%s' in dynamic" | |
dda83cd7 | 738 | " linker's load module list"), objfile_name (objfile)); |
9e35dae4 DJ |
739 | break; |
740 | case TLS_NOT_ALLOCATED_YET_ERROR: | |
741 | if (objfile_is_library) | |
742 | error (_("The inferior has not yet allocated storage for" | |
dda83cd7 SM |
743 | " thread-local variables in\n" |
744 | "the shared library `%s'\n" | |
745 | "for %s"), | |
a068643d TT |
746 | objfile_name (objfile), |
747 | target_pid_to_str (ptid).c_str ()); | |
9e35dae4 DJ |
748 | else |
749 | error (_("The inferior has not yet allocated storage for" | |
dda83cd7 SM |
750 | " thread-local variables in\n" |
751 | "the executable `%s'\n" | |
752 | "for %s"), | |
a068643d TT |
753 | objfile_name (objfile), |
754 | target_pid_to_str (ptid).c_str ()); | |
9e35dae4 DJ |
755 | break; |
756 | case TLS_GENERIC_ERROR: | |
757 | if (objfile_is_library) | |
758 | error (_("Cannot find thread-local storage for %s, " | |
dda83cd7 | 759 | "shared library %s:\n%s"), |
a068643d | 760 | target_pid_to_str (ptid).c_str (), |
3d6e9d23 | 761 | objfile_name (objfile), ex.what ()); |
9e35dae4 DJ |
762 | else |
763 | error (_("Cannot find thread-local storage for %s, " | |
dda83cd7 | 764 | "executable file %s:\n%s"), |
a068643d | 765 | target_pid_to_str (ptid).c_str (), |
3d6e9d23 | 766 | objfile_name (objfile), ex.what ()); |
9e35dae4 DJ |
767 | break; |
768 | default: | |
eedc3f4f | 769 | throw; |
9e35dae4 DJ |
770 | break; |
771 | } | |
772 | } | |
773 | } | |
9e35dae4 DJ |
774 | else |
775 | error (_("Cannot find thread-local variables on this target")); | |
776 | ||
777 | return addr; | |
778 | } | |
779 | ||
6be7b56e | 780 | const char * |
01cb8804 | 781 | target_xfer_status_to_string (enum target_xfer_status status) |
6be7b56e PA |
782 | { |
783 | #define CASE(X) case X: return #X | |
01cb8804 | 784 | switch (status) |
6be7b56e PA |
785 | { |
786 | CASE(TARGET_XFER_E_IO); | |
bc113b4e | 787 | CASE(TARGET_XFER_UNAVAILABLE); |
6be7b56e PA |
788 | default: |
789 | return "<unknown>"; | |
790 | } | |
791 | #undef CASE | |
792 | }; | |
793 | ||
794 | ||
66920317 | 795 | /* See target.h. */ |
c906108c | 796 | |
66920317 TT |
797 | gdb::unique_xmalloc_ptr<char> |
798 | target_read_string (CORE_ADDR memaddr, int len, int *bytes_read) | |
c906108c | 799 | { |
670e35fa | 800 | gdb::unique_xmalloc_ptr<gdb_byte> buffer; |
5d502164 | 801 | |
66920317 TT |
802 | int ignore; |
803 | if (bytes_read == nullptr) | |
804 | bytes_read = &ignore; | |
805 | ||
670e35fa TT |
806 | /* Note that the endian-ness does not matter here. */ |
807 | int errcode = read_string (memaddr, -1, 1, len, BFD_ENDIAN_LITTLE, | |
66920317 TT |
808 | &buffer, bytes_read); |
809 | if (errcode != 0) | |
810 | return {}; | |
670e35fa | 811 | |
66920317 | 812 | return gdb::unique_xmalloc_ptr<char> ((char *) buffer.release ()); |
c906108c SS |
813 | } |
814 | ||
d7a78e5c | 815 | target_section_table * |
07b82ea5 PA |
816 | target_get_section_table (struct target_ops *target) |
817 | { | |
f6ac5f3d | 818 | return target->get_section_table (); |
07b82ea5 PA |
819 | } |
820 | ||
8db32d44 | 821 | /* Find a section containing ADDR. */ |
07b82ea5 | 822 | |
0542c86d | 823 | struct target_section * |
8db32d44 AC |
824 | target_section_by_addr (struct target_ops *target, CORE_ADDR addr) |
825 | { | |
d7a78e5c | 826 | target_section_table *table = target_get_section_table (target); |
07b82ea5 PA |
827 | |
828 | if (table == NULL) | |
829 | return NULL; | |
830 | ||
d7a78e5c | 831 | for (target_section &secp : *table) |
8db32d44 | 832 | { |
bb2a6777 TT |
833 | if (addr >= secp.addr && addr < secp.endaddr) |
834 | return &secp; | |
8db32d44 AC |
835 | } |
836 | return NULL; | |
837 | } | |
838 | ||
0fec99e8 PA |
839 | |
840 | /* Helper for the memory xfer routines. Checks the attributes of the | |
841 | memory region of MEMADDR against the read or write being attempted. | |
842 | If the access is permitted returns true, otherwise returns false. | |
843 | REGION_P is an optional output parameter. If not-NULL, it is | |
844 | filled with a pointer to the memory region of MEMADDR. REG_LEN | |
845 | returns LEN trimmed to the end of the region. This is how much the | |
846 | caller can continue requesting, if the access is permitted. A | |
847 | single xfer request must not straddle memory region boundaries. */ | |
848 | ||
849 | static int | |
850 | memory_xfer_check_region (gdb_byte *readbuf, const gdb_byte *writebuf, | |
851 | ULONGEST memaddr, ULONGEST len, ULONGEST *reg_len, | |
852 | struct mem_region **region_p) | |
853 | { | |
854 | struct mem_region *region; | |
855 | ||
856 | region = lookup_mem_region (memaddr); | |
857 | ||
858 | if (region_p != NULL) | |
859 | *region_p = region; | |
860 | ||
861 | switch (region->attrib.mode) | |
862 | { | |
863 | case MEM_RO: | |
864 | if (writebuf != NULL) | |
865 | return 0; | |
866 | break; | |
867 | ||
868 | case MEM_WO: | |
869 | if (readbuf != NULL) | |
870 | return 0; | |
871 | break; | |
872 | ||
873 | case MEM_FLASH: | |
874 | /* We only support writing to flash during "load" for now. */ | |
875 | if (writebuf != NULL) | |
876 | error (_("Writing to flash memory forbidden in this context")); | |
877 | break; | |
878 | ||
879 | case MEM_NONE: | |
880 | return 0; | |
881 | } | |
882 | ||
883 | /* region->hi == 0 means there's no upper bound. */ | |
884 | if (memaddr + len < region->hi || region->hi == 0) | |
885 | *reg_len = len; | |
886 | else | |
887 | *reg_len = region->hi - memaddr; | |
888 | ||
889 | return 1; | |
890 | } | |
891 | ||
9f713294 YQ |
892 | /* Read memory from more than one valid target. A core file, for |
893 | instance, could have some of memory but delegate other bits to | |
894 | the target below it. So, we must manually try all targets. */ | |
895 | ||
cc9f16aa | 896 | enum target_xfer_status |
17fde6d0 | 897 | raw_memory_xfer_partial (struct target_ops *ops, gdb_byte *readbuf, |
9b409511 YQ |
898 | const gdb_byte *writebuf, ULONGEST memaddr, LONGEST len, |
899 | ULONGEST *xfered_len) | |
9f713294 | 900 | { |
9b409511 | 901 | enum target_xfer_status res; |
9f713294 YQ |
902 | |
903 | do | |
904 | { | |
f6ac5f3d PA |
905 | res = ops->xfer_partial (TARGET_OBJECT_MEMORY, NULL, |
906 | readbuf, writebuf, memaddr, len, | |
907 | xfered_len); | |
9b409511 | 908 | if (res == TARGET_XFER_OK) |
9f713294 YQ |
909 | break; |
910 | ||
633785ff | 911 | /* Stop if the target reports that the memory is not available. */ |
bc113b4e | 912 | if (res == TARGET_XFER_UNAVAILABLE) |
633785ff MM |
913 | break; |
914 | ||
2735d421 | 915 | /* Don't continue past targets which have all the memory. |
dda83cd7 | 916 | At one time, this code was necessary to read data from |
2735d421 KB |
917 | executables / shared libraries when data for the requested |
918 | addresses weren't available in the core file. But now the | |
919 | core target handles this case itself. */ | |
f6ac5f3d | 920 | if (ops->has_all_memory ()) |
9f713294 YQ |
921 | break; |
922 | ||
b6a8c27b | 923 | ops = ops->beneath (); |
9f713294 YQ |
924 | } |
925 | while (ops != NULL); | |
926 | ||
0f26cec1 PA |
927 | /* The cache works at the raw memory level. Make sure the cache |
928 | gets updated with raw contents no matter what kind of memory | |
929 | object was originally being written. Note we do write-through | |
930 | first, so that if it fails, we don't write to the cache contents | |
931 | that never made it to the target. */ | |
932 | if (writebuf != NULL | |
d7e15655 | 933 | && inferior_ptid != null_ptid |
0f26cec1 PA |
934 | && target_dcache_init_p () |
935 | && (stack_cache_enabled_p () || code_cache_enabled_p ())) | |
936 | { | |
937 | DCACHE *dcache = target_dcache_get (); | |
938 | ||
939 | /* Note that writing to an area of memory which wasn't present | |
940 | in the cache doesn't cause it to be loaded in. */ | |
941 | dcache_update (dcache, res, memaddr, writebuf, *xfered_len); | |
942 | } | |
943 | ||
9f713294 YQ |
944 | return res; |
945 | } | |
946 | ||
7f79c47e DE |
947 | /* Perform a partial memory transfer. |
948 | For docs see target.h, to_xfer_partial. */ | |
cf7a04e8 | 949 | |
9b409511 | 950 | static enum target_xfer_status |
f0ba3972 | 951 | memory_xfer_partial_1 (struct target_ops *ops, enum target_object object, |
17fde6d0 | 952 | gdb_byte *readbuf, const gdb_byte *writebuf, ULONGEST memaddr, |
9b409511 | 953 | ULONGEST len, ULONGEST *xfered_len) |
0779438d | 954 | { |
9b409511 | 955 | enum target_xfer_status res; |
0fec99e8 | 956 | ULONGEST reg_len; |
cf7a04e8 | 957 | struct mem_region *region; |
4e5d721f | 958 | struct inferior *inf; |
cf7a04e8 | 959 | |
07b82ea5 PA |
960 | /* For accesses to unmapped overlay sections, read directly from |
961 | files. Must do this first, as MEMADDR may need adjustment. */ | |
962 | if (readbuf != NULL && overlay_debugging) | |
963 | { | |
964 | struct obj_section *section = find_pc_overlay (memaddr); | |
5d502164 | 965 | |
07b82ea5 PA |
966 | if (pc_in_unmapped_range (memaddr, section)) |
967 | { | |
d7a78e5c | 968 | target_section_table *table = target_get_section_table (ops); |
07b82ea5 | 969 | const char *section_name = section->the_bfd_section->name; |
5d502164 | 970 | |
07b82ea5 | 971 | memaddr = overlay_mapped_address (memaddr, section); |
e56cb451 KB |
972 | |
973 | auto match_cb = [=] (const struct target_section *s) | |
974 | { | |
975 | return (strcmp (section_name, s->the_bfd_section->name) == 0); | |
976 | }; | |
977 | ||
07b82ea5 | 978 | return section_table_xfer_memory_partial (readbuf, writebuf, |
9b409511 | 979 | memaddr, len, xfered_len, |
bb2a6777 | 980 | *table, match_cb); |
07b82ea5 PA |
981 | } |
982 | } | |
983 | ||
984 | /* Try the executable files, if "trust-readonly-sections" is set. */ | |
cf7a04e8 DJ |
985 | if (readbuf != NULL && trust_readonly) |
986 | { | |
0542c86d | 987 | struct target_section *secp; |
cf7a04e8 DJ |
988 | |
989 | secp = target_section_by_addr (ops, memaddr); | |
990 | if (secp != NULL | |
fd361982 | 991 | && (bfd_section_flags (secp->the_bfd_section) & SEC_READONLY)) |
07b82ea5 | 992 | { |
d7a78e5c | 993 | target_section_table *table = target_get_section_table (ops); |
07b82ea5 | 994 | return section_table_xfer_memory_partial (readbuf, writebuf, |
9b409511 | 995 | memaddr, len, xfered_len, |
bb2a6777 | 996 | *table); |
07b82ea5 | 997 | } |
98646950 UW |
998 | } |
999 | ||
cf7a04e8 | 1000 | /* Try GDB's internal data cache. */ |
cf7a04e8 | 1001 | |
0fec99e8 PA |
1002 | if (!memory_xfer_check_region (readbuf, writebuf, memaddr, len, ®_len, |
1003 | ®ion)) | |
1004 | return TARGET_XFER_E_IO; | |
cf7a04e8 | 1005 | |
d7e15655 | 1006 | if (inferior_ptid != null_ptid) |
00431a78 | 1007 | inf = current_inferior (); |
6c95b8df PA |
1008 | else |
1009 | inf = NULL; | |
4e5d721f DE |
1010 | |
1011 | if (inf != NULL | |
0f26cec1 | 1012 | && readbuf != NULL |
2f4d8875 PA |
1013 | /* The dcache reads whole cache lines; that doesn't play well |
1014 | with reading from a trace buffer, because reading outside of | |
1015 | the collected memory range fails. */ | |
1016 | && get_traceframe_number () == -1 | |
4e5d721f | 1017 | && (region->attrib.cache |
29453a14 YQ |
1018 | || (stack_cache_enabled_p () && object == TARGET_OBJECT_STACK_MEMORY) |
1019 | || (code_cache_enabled_p () && object == TARGET_OBJECT_CODE_MEMORY))) | |
cf7a04e8 | 1020 | { |
2a2f9fe4 YQ |
1021 | DCACHE *dcache = target_dcache_get_or_init (); |
1022 | ||
0f26cec1 PA |
1023 | return dcache_read_memory_partial (ops, dcache, memaddr, readbuf, |
1024 | reg_len, xfered_len); | |
cf7a04e8 DJ |
1025 | } |
1026 | ||
1027 | /* If none of those methods found the memory we wanted, fall back | |
1028 | to a target partial transfer. Normally a single call to | |
1029 | to_xfer_partial is enough; if it doesn't recognize an object | |
1030 | it will call the to_xfer_partial of the next target down. | |
1031 | But for memory this won't do. Memory is the only target | |
9b409511 YQ |
1032 | object which can be read from more than one valid target. |
1033 | A core file, for instance, could have some of memory but | |
1034 | delegate other bits to the target below it. So, we must | |
1035 | manually try all targets. */ | |
1036 | ||
1037 | res = raw_memory_xfer_partial (ops, readbuf, writebuf, memaddr, reg_len, | |
1038 | xfered_len); | |
cf7a04e8 DJ |
1039 | |
1040 | /* If we still haven't got anything, return the last error. We | |
1041 | give up. */ | |
1042 | return res; | |
0779438d AC |
1043 | } |
1044 | ||
f0ba3972 PA |
1045 | /* Perform a partial memory transfer. For docs see target.h, |
1046 | to_xfer_partial. */ | |
1047 | ||
9b409511 | 1048 | static enum target_xfer_status |
f0ba3972 | 1049 | memory_xfer_partial (struct target_ops *ops, enum target_object object, |
9b409511 YQ |
1050 | gdb_byte *readbuf, const gdb_byte *writebuf, |
1051 | ULONGEST memaddr, ULONGEST len, ULONGEST *xfered_len) | |
f0ba3972 | 1052 | { |
9b409511 | 1053 | enum target_xfer_status res; |
f0ba3972 PA |
1054 | |
1055 | /* Zero length requests are ok and require no work. */ | |
1056 | if (len == 0) | |
9b409511 | 1057 | return TARGET_XFER_EOF; |
f0ba3972 | 1058 | |
a738ea1d YQ |
1059 | memaddr = address_significant (target_gdbarch (), memaddr); |
1060 | ||
f0ba3972 PA |
1061 | /* Fill in READBUF with breakpoint shadows, or WRITEBUF with |
1062 | breakpoint insns, thus hiding out from higher layers whether | |
1063 | there are software breakpoints inserted in the code stream. */ | |
1064 | if (readbuf != NULL) | |
1065 | { | |
9b409511 YQ |
1066 | res = memory_xfer_partial_1 (ops, object, readbuf, NULL, memaddr, len, |
1067 | xfered_len); | |
f0ba3972 | 1068 | |
9b409511 | 1069 | if (res == TARGET_XFER_OK && !show_memory_breakpoints) |
c63528fc | 1070 | breakpoint_xfer_memory (readbuf, NULL, NULL, memaddr, *xfered_len); |
f0ba3972 PA |
1071 | } |
1072 | else | |
1073 | { | |
67c059c2 AB |
1074 | /* A large write request is likely to be partially satisfied |
1075 | by memory_xfer_partial_1. We will continually malloc | |
1076 | and free a copy of the entire write request for breakpoint | |
1077 | shadow handling even though we only end up writing a small | |
09c98b44 DB |
1078 | subset of it. Cap writes to a limit specified by the target |
1079 | to mitigate this. */ | |
f6ac5f3d | 1080 | len = std::min (ops->get_memory_xfer_limit (), len); |
67c059c2 | 1081 | |
26fcd5d7 TT |
1082 | gdb::byte_vector buf (writebuf, writebuf + len); |
1083 | breakpoint_xfer_memory (NULL, buf.data (), writebuf, memaddr, len); | |
1084 | res = memory_xfer_partial_1 (ops, object, NULL, buf.data (), memaddr, len, | |
9b409511 | 1085 | xfered_len); |
f0ba3972 PA |
1086 | } |
1087 | ||
1088 | return res; | |
1089 | } | |
1090 | ||
cb85b21b TT |
1091 | scoped_restore_tmpl<int> |
1092 | make_scoped_restore_show_memory_breakpoints (int show) | |
8defab1a | 1093 | { |
cb85b21b | 1094 | return make_scoped_restore (&show_memory_breakpoints, show); |
8defab1a DJ |
1095 | } |
1096 | ||
7f79c47e DE |
1097 | /* For docs see target.h, to_xfer_partial. */ |
1098 | ||
9b409511 | 1099 | enum target_xfer_status |
27394598 AC |
1100 | target_xfer_partial (struct target_ops *ops, |
1101 | enum target_object object, const char *annex, | |
4ac248ca | 1102 | gdb_byte *readbuf, const gdb_byte *writebuf, |
9b409511 YQ |
1103 | ULONGEST offset, ULONGEST len, |
1104 | ULONGEST *xfered_len) | |
27394598 | 1105 | { |
9b409511 | 1106 | enum target_xfer_status retval; |
27394598 | 1107 | |
ce6d0892 YQ |
1108 | /* Transfer is done when LEN is zero. */ |
1109 | if (len == 0) | |
9b409511 | 1110 | return TARGET_XFER_EOF; |
ce6d0892 | 1111 | |
d914c394 SS |
1112 | if (writebuf && !may_write_memory) |
1113 | error (_("Writing to memory is not allowed (addr %s, len %s)"), | |
1114 | core_addr_to_string_nz (offset), plongest (len)); | |
1115 | ||
9b409511 YQ |
1116 | *xfered_len = 0; |
1117 | ||
cf7a04e8 DJ |
1118 | /* If this is a memory transfer, let the memory-specific code |
1119 | have a look at it instead. Memory transfers are more | |
1120 | complicated. */ | |
29453a14 YQ |
1121 | if (object == TARGET_OBJECT_MEMORY || object == TARGET_OBJECT_STACK_MEMORY |
1122 | || object == TARGET_OBJECT_CODE_MEMORY) | |
4e5d721f | 1123 | retval = memory_xfer_partial (ops, object, readbuf, |
9b409511 | 1124 | writebuf, offset, len, xfered_len); |
9f713294 | 1125 | else if (object == TARGET_OBJECT_RAW_MEMORY) |
cf7a04e8 | 1126 | { |
0fec99e8 PA |
1127 | /* Skip/avoid accessing the target if the memory region |
1128 | attributes block the access. Check this here instead of in | |
1129 | raw_memory_xfer_partial as otherwise we'd end up checking | |
1130 | this twice in the case of the memory_xfer_partial path is | |
1131 | taken; once before checking the dcache, and another in the | |
1132 | tail call to raw_memory_xfer_partial. */ | |
1133 | if (!memory_xfer_check_region (readbuf, writebuf, offset, len, &len, | |
1134 | NULL)) | |
1135 | return TARGET_XFER_E_IO; | |
1136 | ||
9f713294 | 1137 | /* Request the normal memory object from other layers. */ |
9b409511 YQ |
1138 | retval = raw_memory_xfer_partial (ops, readbuf, writebuf, offset, len, |
1139 | xfered_len); | |
cf7a04e8 | 1140 | } |
9f713294 | 1141 | else |
f6ac5f3d PA |
1142 | retval = ops->xfer_partial (object, annex, readbuf, |
1143 | writebuf, offset, len, xfered_len); | |
cf7a04e8 | 1144 | |
27394598 AC |
1145 | if (targetdebug) |
1146 | { | |
1147 | const unsigned char *myaddr = NULL; | |
1148 | ||
1149 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a | 1150 | "%s:target_xfer_partial " |
9b409511 | 1151 | "(%d, %s, %s, %s, %s, %s) = %d, %s", |
f6ac5f3d | 1152 | ops->shortname (), |
27394598 AC |
1153 | (int) object, |
1154 | (annex ? annex : "(null)"), | |
53b71562 JB |
1155 | host_address_to_string (readbuf), |
1156 | host_address_to_string (writebuf), | |
0b1553bc | 1157 | core_addr_to_string_nz (offset), |
9b409511 YQ |
1158 | pulongest (len), retval, |
1159 | pulongest (*xfered_len)); | |
27394598 AC |
1160 | |
1161 | if (readbuf) | |
1162 | myaddr = readbuf; | |
1163 | if (writebuf) | |
1164 | myaddr = writebuf; | |
9b409511 | 1165 | if (retval == TARGET_XFER_OK && myaddr != NULL) |
27394598 AC |
1166 | { |
1167 | int i; | |
2bc416ba | 1168 | |
27394598 | 1169 | fputs_unfiltered (", bytes =", gdb_stdlog); |
9b409511 | 1170 | for (i = 0; i < *xfered_len; i++) |
27394598 | 1171 | { |
53b71562 | 1172 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
27394598 AC |
1173 | { |
1174 | if (targetdebug < 2 && i > 0) | |
1175 | { | |
1176 | fprintf_unfiltered (gdb_stdlog, " ..."); | |
1177 | break; | |
1178 | } | |
1179 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
1180 | } | |
2bc416ba | 1181 | |
27394598 AC |
1182 | fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
1183 | } | |
1184 | } | |
2bc416ba | 1185 | |
27394598 AC |
1186 | fputc_unfiltered ('\n', gdb_stdlog); |
1187 | } | |
9b409511 YQ |
1188 | |
1189 | /* Check implementations of to_xfer_partial update *XFERED_LEN | |
1190 | properly. Do assertion after printing debug messages, so that we | |
1191 | can find more clues on assertion failure from debugging messages. */ | |
bc113b4e | 1192 | if (retval == TARGET_XFER_OK || retval == TARGET_XFER_UNAVAILABLE) |
9b409511 YQ |
1193 | gdb_assert (*xfered_len > 0); |
1194 | ||
27394598 AC |
1195 | return retval; |
1196 | } | |
1197 | ||
578d3588 PA |
1198 | /* Read LEN bytes of target memory at address MEMADDR, placing the |
1199 | results in GDB's memory at MYADDR. Returns either 0 for success or | |
d09f2c3f | 1200 | -1 if any error occurs. |
c906108c SS |
1201 | |
1202 | If an error occurs, no guarantee is made about the contents of the data at | |
1203 | MYADDR. In particular, the caller should not depend upon partial reads | |
1204 | filling the buffer with good data. There is no way for the caller to know | |
1205 | how much good data might have been transfered anyway. Callers that can | |
cf7a04e8 | 1206 | deal with partial reads should call target_read (which will retry until |
c378eb4e | 1207 | it makes no progress, and then return how much was transferred). */ |
c906108c SS |
1208 | |
1209 | int | |
1b162304 | 1210 | target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) |
c906108c | 1211 | { |
8b88a78e | 1212 | if (target_read (current_top_target (), TARGET_OBJECT_MEMORY, NULL, |
cf7a04e8 DJ |
1213 | myaddr, memaddr, len) == len) |
1214 | return 0; | |
0779438d | 1215 | else |
d09f2c3f | 1216 | return -1; |
c906108c SS |
1217 | } |
1218 | ||
721ec300 GB |
1219 | /* See target/target.h. */ |
1220 | ||
1221 | int | |
1222 | target_read_uint32 (CORE_ADDR memaddr, uint32_t *result) | |
1223 | { | |
1224 | gdb_byte buf[4]; | |
1225 | int r; | |
1226 | ||
1227 | r = target_read_memory (memaddr, buf, sizeof buf); | |
1228 | if (r != 0) | |
1229 | return r; | |
1230 | *result = extract_unsigned_integer (buf, sizeof buf, | |
1231 | gdbarch_byte_order (target_gdbarch ())); | |
1232 | return 0; | |
1233 | } | |
1234 | ||
aee4bf85 PA |
1235 | /* Like target_read_memory, but specify explicitly that this is a read |
1236 | from the target's raw memory. That is, this read bypasses the | |
1237 | dcache, breakpoint shadowing, etc. */ | |
1238 | ||
1239 | int | |
1240 | target_read_raw_memory (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) | |
1241 | { | |
8b88a78e | 1242 | if (target_read (current_top_target (), TARGET_OBJECT_RAW_MEMORY, NULL, |
aee4bf85 PA |
1243 | myaddr, memaddr, len) == len) |
1244 | return 0; | |
1245 | else | |
d09f2c3f | 1246 | return -1; |
aee4bf85 PA |
1247 | } |
1248 | ||
4e5d721f DE |
1249 | /* Like target_read_memory, but specify explicitly that this is a read from |
1250 | the target's stack. This may trigger different cache behavior. */ | |
1251 | ||
1252 | int | |
45aa4659 | 1253 | target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) |
4e5d721f | 1254 | { |
8b88a78e | 1255 | if (target_read (current_top_target (), TARGET_OBJECT_STACK_MEMORY, NULL, |
4e5d721f DE |
1256 | myaddr, memaddr, len) == len) |
1257 | return 0; | |
1258 | else | |
d09f2c3f | 1259 | return -1; |
4e5d721f DE |
1260 | } |
1261 | ||
29453a14 YQ |
1262 | /* Like target_read_memory, but specify explicitly that this is a read from |
1263 | the target's code. This may trigger different cache behavior. */ | |
1264 | ||
1265 | int | |
1266 | target_read_code (CORE_ADDR memaddr, gdb_byte *myaddr, ssize_t len) | |
1267 | { | |
8b88a78e | 1268 | if (target_read (current_top_target (), TARGET_OBJECT_CODE_MEMORY, NULL, |
29453a14 YQ |
1269 | myaddr, memaddr, len) == len) |
1270 | return 0; | |
1271 | else | |
d09f2c3f | 1272 | return -1; |
29453a14 YQ |
1273 | } |
1274 | ||
7f79c47e | 1275 | /* Write LEN bytes from MYADDR to target memory at address MEMADDR. |
d09f2c3f PA |
1276 | Returns either 0 for success or -1 if any error occurs. If an |
1277 | error occurs, no guarantee is made about how much data got written. | |
1278 | Callers that can deal with partial writes should call | |
1279 | target_write. */ | |
7f79c47e | 1280 | |
c906108c | 1281 | int |
45aa4659 | 1282 | target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len) |
c906108c | 1283 | { |
8b88a78e | 1284 | if (target_write (current_top_target (), TARGET_OBJECT_MEMORY, NULL, |
cf7a04e8 DJ |
1285 | myaddr, memaddr, len) == len) |
1286 | return 0; | |
0779438d | 1287 | else |
d09f2c3f | 1288 | return -1; |
c906108c | 1289 | } |
c5aa993b | 1290 | |
f0ba3972 | 1291 | /* Write LEN bytes from MYADDR to target raw memory at address |
d09f2c3f PA |
1292 | MEMADDR. Returns either 0 for success or -1 if any error occurs. |
1293 | If an error occurs, no guarantee is made about how much data got | |
1294 | written. Callers that can deal with partial writes should call | |
1295 | target_write. */ | |
f0ba3972 PA |
1296 | |
1297 | int | |
45aa4659 | 1298 | target_write_raw_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, ssize_t len) |
f0ba3972 | 1299 | { |
8b88a78e | 1300 | if (target_write (current_top_target (), TARGET_OBJECT_RAW_MEMORY, NULL, |
f0ba3972 PA |
1301 | myaddr, memaddr, len) == len) |
1302 | return 0; | |
1303 | else | |
d09f2c3f | 1304 | return -1; |
f0ba3972 PA |
1305 | } |
1306 | ||
fd79ecee DJ |
1307 | /* Fetch the target's memory map. */ |
1308 | ||
a664f67e | 1309 | std::vector<mem_region> |
fd79ecee DJ |
1310 | target_memory_map (void) |
1311 | { | |
8b88a78e | 1312 | std::vector<mem_region> result = current_top_target ()->memory_map (); |
a664f67e SM |
1313 | if (result.empty ()) |
1314 | return result; | |
fd79ecee | 1315 | |
a664f67e | 1316 | std::sort (result.begin (), result.end ()); |
fd79ecee DJ |
1317 | |
1318 | /* Check that regions do not overlap. Simultaneously assign | |
1319 | a numbering for the "mem" commands to use to refer to | |
1320 | each region. */ | |
a664f67e SM |
1321 | mem_region *last_one = NULL; |
1322 | for (size_t ix = 0; ix < result.size (); ix++) | |
fd79ecee | 1323 | { |
a664f67e | 1324 | mem_region *this_one = &result[ix]; |
fd79ecee DJ |
1325 | this_one->number = ix; |
1326 | ||
a664f67e | 1327 | if (last_one != NULL && last_one->hi > this_one->lo) |
fd79ecee DJ |
1328 | { |
1329 | warning (_("Overlapping regions in memory map: ignoring")); | |
a664f67e | 1330 | return std::vector<mem_region> (); |
fd79ecee | 1331 | } |
a664f67e | 1332 | |
fd79ecee DJ |
1333 | last_one = this_one; |
1334 | } | |
1335 | ||
1336 | return result; | |
1337 | } | |
1338 | ||
a76d924d DJ |
1339 | void |
1340 | target_flash_erase (ULONGEST address, LONGEST length) | |
1341 | { | |
8b88a78e | 1342 | current_top_target ()->flash_erase (address, length); |
a76d924d DJ |
1343 | } |
1344 | ||
1345 | void | |
1346 | target_flash_done (void) | |
1347 | { | |
8b88a78e | 1348 | current_top_target ()->flash_done (); |
a76d924d DJ |
1349 | } |
1350 | ||
920d2a44 AC |
1351 | static void |
1352 | show_trust_readonly (struct ui_file *file, int from_tty, | |
1353 | struct cmd_list_element *c, const char *value) | |
1354 | { | |
3e43a32a MS |
1355 | fprintf_filtered (file, |
1356 | _("Mode for reading from readonly sections is %s.\n"), | |
920d2a44 AC |
1357 | value); |
1358 | } | |
3a11626d | 1359 | |
7f79c47e | 1360 | /* Target vector read/write partial wrapper functions. */ |
0088c768 | 1361 | |
9b409511 | 1362 | static enum target_xfer_status |
1e3ff5ad AC |
1363 | target_read_partial (struct target_ops *ops, |
1364 | enum target_object object, | |
1b0ba102 | 1365 | const char *annex, gdb_byte *buf, |
9b409511 YQ |
1366 | ULONGEST offset, ULONGEST len, |
1367 | ULONGEST *xfered_len) | |
1e3ff5ad | 1368 | { |
9b409511 YQ |
1369 | return target_xfer_partial (ops, object, annex, buf, NULL, offset, len, |
1370 | xfered_len); | |
1e3ff5ad AC |
1371 | } |
1372 | ||
8a55ffb0 | 1373 | static enum target_xfer_status |
1e3ff5ad AC |
1374 | target_write_partial (struct target_ops *ops, |
1375 | enum target_object object, | |
1b0ba102 | 1376 | const char *annex, const gdb_byte *buf, |
9b409511 | 1377 | ULONGEST offset, LONGEST len, ULONGEST *xfered_len) |
1e3ff5ad | 1378 | { |
9b409511 YQ |
1379 | return target_xfer_partial (ops, object, annex, NULL, buf, offset, len, |
1380 | xfered_len); | |
1e3ff5ad AC |
1381 | } |
1382 | ||
1383 | /* Wrappers to perform the full transfer. */ | |
7f79c47e DE |
1384 | |
1385 | /* For docs on target_read see target.h. */ | |
1386 | ||
1e3ff5ad AC |
1387 | LONGEST |
1388 | target_read (struct target_ops *ops, | |
1389 | enum target_object object, | |
1b0ba102 | 1390 | const char *annex, gdb_byte *buf, |
1e3ff5ad AC |
1391 | ULONGEST offset, LONGEST len) |
1392 | { | |
279a6fed | 1393 | LONGEST xfered_total = 0; |
d309493c SM |
1394 | int unit_size = 1; |
1395 | ||
1396 | /* If we are reading from a memory object, find the length of an addressable | |
1397 | unit for that architecture. */ | |
1398 | if (object == TARGET_OBJECT_MEMORY | |
1399 | || object == TARGET_OBJECT_STACK_MEMORY | |
1400 | || object == TARGET_OBJECT_CODE_MEMORY | |
1401 | || object == TARGET_OBJECT_RAW_MEMORY) | |
1402 | unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); | |
5d502164 | 1403 | |
279a6fed | 1404 | while (xfered_total < len) |
1e3ff5ad | 1405 | { |
279a6fed | 1406 | ULONGEST xfered_partial; |
9b409511 YQ |
1407 | enum target_xfer_status status; |
1408 | ||
1409 | status = target_read_partial (ops, object, annex, | |
d309493c | 1410 | buf + xfered_total * unit_size, |
279a6fed SM |
1411 | offset + xfered_total, len - xfered_total, |
1412 | &xfered_partial); | |
5d502164 | 1413 | |
1e3ff5ad | 1414 | /* Call an observer, notifying them of the xfer progress? */ |
9b409511 | 1415 | if (status == TARGET_XFER_EOF) |
279a6fed | 1416 | return xfered_total; |
9b409511 YQ |
1417 | else if (status == TARGET_XFER_OK) |
1418 | { | |
279a6fed | 1419 | xfered_total += xfered_partial; |
9b409511 YQ |
1420 | QUIT; |
1421 | } | |
1422 | else | |
279a6fed | 1423 | return TARGET_XFER_E_IO; |
9b409511 | 1424 | |
1e3ff5ad AC |
1425 | } |
1426 | return len; | |
1427 | } | |
1428 | ||
f1a507a1 JB |
1429 | /* Assuming that the entire [begin, end) range of memory cannot be |
1430 | read, try to read whatever subrange is possible to read. | |
1431 | ||
1432 | The function returns, in RESULT, either zero or one memory block. | |
1433 | If there's a readable subrange at the beginning, it is completely | |
1434 | read and returned. Any further readable subrange will not be read. | |
1435 | Otherwise, if there's a readable subrange at the end, it will be | |
1436 | completely read and returned. Any readable subranges before it | |
1437 | (obviously, not starting at the beginning), will be ignored. In | |
1438 | other cases -- either no readable subrange, or readable subrange(s) | |
1439 | that is neither at the beginning, or end, nothing is returned. | |
1440 | ||
1441 | The purpose of this function is to handle a read across a boundary | |
1442 | of accessible memory in a case when memory map is not available. | |
1443 | The above restrictions are fine for this case, but will give | |
1444 | incorrect results if the memory is 'patchy'. However, supporting | |
1445 | 'patchy' memory would require trying to read every single byte, | |
1446 | and it seems unacceptable solution. Explicit memory map is | |
1447 | recommended for this case -- and target_read_memory_robust will | |
1448 | take care of reading multiple ranges then. */ | |
8dedea02 VP |
1449 | |
1450 | static void | |
3e43a32a | 1451 | read_whatever_is_readable (struct target_ops *ops, |
279a6fed | 1452 | const ULONGEST begin, const ULONGEST end, |
d309493c | 1453 | int unit_size, |
386c8614 | 1454 | std::vector<memory_read_result> *result) |
d5086790 | 1455 | { |
8dedea02 VP |
1456 | ULONGEST current_begin = begin; |
1457 | ULONGEST current_end = end; | |
1458 | int forward; | |
9b409511 | 1459 | ULONGEST xfered_len; |
8dedea02 VP |
1460 | |
1461 | /* If we previously failed to read 1 byte, nothing can be done here. */ | |
1462 | if (end - begin <= 1) | |
386c8614 TT |
1463 | return; |
1464 | ||
1465 | gdb::unique_xmalloc_ptr<gdb_byte> buf ((gdb_byte *) xmalloc (end - begin)); | |
8dedea02 VP |
1466 | |
1467 | /* Check that either first or the last byte is readable, and give up | |
c378eb4e | 1468 | if not. This heuristic is meant to permit reading accessible memory |
8dedea02 VP |
1469 | at the boundary of accessible region. */ |
1470 | if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
386c8614 | 1471 | buf.get (), begin, 1, &xfered_len) == TARGET_XFER_OK) |
8dedea02 VP |
1472 | { |
1473 | forward = 1; | |
1474 | ++current_begin; | |
1475 | } | |
1476 | else if (target_read_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
386c8614 | 1477 | buf.get () + (end - begin) - 1, end - 1, 1, |
9b409511 | 1478 | &xfered_len) == TARGET_XFER_OK) |
8dedea02 VP |
1479 | { |
1480 | forward = 0; | |
1481 | --current_end; | |
1482 | } | |
1483 | else | |
386c8614 | 1484 | return; |
8dedea02 VP |
1485 | |
1486 | /* Loop invariant is that the [current_begin, current_end) was previously | |
1487 | found to be not readable as a whole. | |
1488 | ||
1489 | Note loop condition -- if the range has 1 byte, we can't divide the range | |
1490 | so there's no point trying further. */ | |
1491 | while (current_end - current_begin > 1) | |
1492 | { | |
1493 | ULONGEST first_half_begin, first_half_end; | |
1494 | ULONGEST second_half_begin, second_half_end; | |
1495 | LONGEST xfer; | |
279a6fed | 1496 | ULONGEST middle = current_begin + (current_end - current_begin) / 2; |
f1a507a1 | 1497 | |
8dedea02 VP |
1498 | if (forward) |
1499 | { | |
1500 | first_half_begin = current_begin; | |
1501 | first_half_end = middle; | |
1502 | second_half_begin = middle; | |
1503 | second_half_end = current_end; | |
1504 | } | |
1505 | else | |
1506 | { | |
1507 | first_half_begin = middle; | |
1508 | first_half_end = current_end; | |
1509 | second_half_begin = current_begin; | |
1510 | second_half_end = middle; | |
1511 | } | |
1512 | ||
1513 | xfer = target_read (ops, TARGET_OBJECT_MEMORY, NULL, | |
386c8614 | 1514 | buf.get () + (first_half_begin - begin) * unit_size, |
8dedea02 VP |
1515 | first_half_begin, |
1516 | first_half_end - first_half_begin); | |
1517 | ||
1518 | if (xfer == first_half_end - first_half_begin) | |
1519 | { | |
c378eb4e | 1520 | /* This half reads up fine. So, the error must be in the |
3e43a32a | 1521 | other half. */ |
8dedea02 VP |
1522 | current_begin = second_half_begin; |
1523 | current_end = second_half_end; | |
1524 | } | |
1525 | else | |
1526 | { | |
c378eb4e | 1527 | /* This half is not readable. Because we've tried one byte, we |
279a6fed | 1528 | know some part of this half if actually readable. Go to the next |
8dedea02 VP |
1529 | iteration to divide again and try to read. |
1530 | ||
1531 | We don't handle the other half, because this function only tries | |
1532 | to read a single readable subrange. */ | |
1533 | current_begin = first_half_begin; | |
1534 | current_end = first_half_end; | |
1535 | } | |
1536 | } | |
1537 | ||
1538 | if (forward) | |
1539 | { | |
1540 | /* The [begin, current_begin) range has been read. */ | |
386c8614 | 1541 | result->emplace_back (begin, current_end, std::move (buf)); |
8dedea02 VP |
1542 | } |
1543 | else | |
1544 | { | |
1545 | /* The [current_end, end) range has been read. */ | |
279a6fed | 1546 | LONGEST region_len = end - current_end; |
f1a507a1 | 1547 | |
386c8614 TT |
1548 | gdb::unique_xmalloc_ptr<gdb_byte> data |
1549 | ((gdb_byte *) xmalloc (region_len * unit_size)); | |
1550 | memcpy (data.get (), buf.get () + (current_end - begin) * unit_size, | |
d309493c | 1551 | region_len * unit_size); |
386c8614 | 1552 | result->emplace_back (current_end, end, std::move (data)); |
8dedea02 | 1553 | } |
8dedea02 VP |
1554 | } |
1555 | ||
386c8614 | 1556 | std::vector<memory_read_result> |
279a6fed SM |
1557 | read_memory_robust (struct target_ops *ops, |
1558 | const ULONGEST offset, const LONGEST len) | |
8dedea02 | 1559 | { |
386c8614 | 1560 | std::vector<memory_read_result> result; |
d309493c | 1561 | int unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); |
8dedea02 | 1562 | |
279a6fed SM |
1563 | LONGEST xfered_total = 0; |
1564 | while (xfered_total < len) | |
d5086790 | 1565 | { |
279a6fed SM |
1566 | struct mem_region *region = lookup_mem_region (offset + xfered_total); |
1567 | LONGEST region_len; | |
5d502164 | 1568 | |
8dedea02 VP |
1569 | /* If there is no explicit region, a fake one should be created. */ |
1570 | gdb_assert (region); | |
1571 | ||
1572 | if (region->hi == 0) | |
279a6fed | 1573 | region_len = len - xfered_total; |
8dedea02 | 1574 | else |
279a6fed | 1575 | region_len = region->hi - offset; |
8dedea02 VP |
1576 | |
1577 | if (region->attrib.mode == MEM_NONE || region->attrib.mode == MEM_WO) | |
d5086790 | 1578 | { |
c378eb4e | 1579 | /* Cannot read this region. Note that we can end up here only |
8dedea02 VP |
1580 | if the region is explicitly marked inaccessible, or |
1581 | 'inaccessible-by-default' is in effect. */ | |
279a6fed | 1582 | xfered_total += region_len; |
8dedea02 VP |
1583 | } |
1584 | else | |
1585 | { | |
325fac50 | 1586 | LONGEST to_read = std::min (len - xfered_total, region_len); |
386c8614 TT |
1587 | gdb::unique_xmalloc_ptr<gdb_byte> buffer |
1588 | ((gdb_byte *) xmalloc (to_read * unit_size)); | |
8dedea02 | 1589 | |
279a6fed | 1590 | LONGEST xfered_partial = |
386c8614 | 1591 | target_read (ops, TARGET_OBJECT_MEMORY, NULL, buffer.get (), |
279a6fed | 1592 | offset + xfered_total, to_read); |
8dedea02 | 1593 | /* Call an observer, notifying them of the xfer progress? */ |
279a6fed | 1594 | if (xfered_partial <= 0) |
d5086790 | 1595 | { |
c378eb4e | 1596 | /* Got an error reading full chunk. See if maybe we can read |
8dedea02 | 1597 | some subrange. */ |
e084c964 DB |
1598 | read_whatever_is_readable (ops, offset + xfered_total, |
1599 | offset + xfered_total + to_read, | |
1600 | unit_size, &result); | |
279a6fed | 1601 | xfered_total += to_read; |
d5086790 | 1602 | } |
8dedea02 VP |
1603 | else |
1604 | { | |
386c8614 TT |
1605 | result.emplace_back (offset + xfered_total, |
1606 | offset + xfered_total + xfered_partial, | |
1607 | std::move (buffer)); | |
279a6fed | 1608 | xfered_total += xfered_partial; |
8dedea02 VP |
1609 | } |
1610 | QUIT; | |
d5086790 | 1611 | } |
d5086790 | 1612 | } |
9d78f827 | 1613 | |
8dedea02 | 1614 | return result; |
d5086790 VP |
1615 | } |
1616 | ||
8dedea02 | 1617 | |
cf7a04e8 DJ |
1618 | /* An alternative to target_write with progress callbacks. */ |
1619 | ||
1e3ff5ad | 1620 | LONGEST |
cf7a04e8 DJ |
1621 | target_write_with_progress (struct target_ops *ops, |
1622 | enum target_object object, | |
1623 | const char *annex, const gdb_byte *buf, | |
1624 | ULONGEST offset, LONGEST len, | |
1625 | void (*progress) (ULONGEST, void *), void *baton) | |
1e3ff5ad | 1626 | { |
279a6fed | 1627 | LONGEST xfered_total = 0; |
d309493c SM |
1628 | int unit_size = 1; |
1629 | ||
1630 | /* If we are writing to a memory object, find the length of an addressable | |
1631 | unit for that architecture. */ | |
1632 | if (object == TARGET_OBJECT_MEMORY | |
1633 | || object == TARGET_OBJECT_STACK_MEMORY | |
1634 | || object == TARGET_OBJECT_CODE_MEMORY | |
1635 | || object == TARGET_OBJECT_RAW_MEMORY) | |
1636 | unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); | |
a76d924d DJ |
1637 | |
1638 | /* Give the progress callback a chance to set up. */ | |
1639 | if (progress) | |
1640 | (*progress) (0, baton); | |
1641 | ||
279a6fed | 1642 | while (xfered_total < len) |
1e3ff5ad | 1643 | { |
279a6fed | 1644 | ULONGEST xfered_partial; |
9b409511 YQ |
1645 | enum target_xfer_status status; |
1646 | ||
1647 | status = target_write_partial (ops, object, annex, | |
d309493c | 1648 | buf + xfered_total * unit_size, |
279a6fed SM |
1649 | offset + xfered_total, len - xfered_total, |
1650 | &xfered_partial); | |
cf7a04e8 | 1651 | |
5c328c05 | 1652 | if (status != TARGET_XFER_OK) |
279a6fed | 1653 | return status == TARGET_XFER_EOF ? xfered_total : TARGET_XFER_E_IO; |
cf7a04e8 DJ |
1654 | |
1655 | if (progress) | |
279a6fed | 1656 | (*progress) (xfered_partial, baton); |
cf7a04e8 | 1657 | |
279a6fed | 1658 | xfered_total += xfered_partial; |
1e3ff5ad AC |
1659 | QUIT; |
1660 | } | |
1661 | return len; | |
1662 | } | |
1663 | ||
7f79c47e DE |
1664 | /* For docs on target_write see target.h. */ |
1665 | ||
cf7a04e8 DJ |
1666 | LONGEST |
1667 | target_write (struct target_ops *ops, | |
1668 | enum target_object object, | |
1669 | const char *annex, const gdb_byte *buf, | |
1670 | ULONGEST offset, LONGEST len) | |
1671 | { | |
1672 | return target_write_with_progress (ops, object, annex, buf, offset, len, | |
1673 | NULL, NULL); | |
1674 | } | |
1675 | ||
9018be22 SM |
1676 | /* Help for target_read_alloc and target_read_stralloc. See their comments |
1677 | for details. */ | |
13547ab6 | 1678 | |
9018be22 SM |
1679 | template <typename T> |
1680 | gdb::optional<gdb::def_vector<T>> | |
159f81f3 | 1681 | target_read_alloc_1 (struct target_ops *ops, enum target_object object, |
9018be22 | 1682 | const char *annex) |
13547ab6 | 1683 | { |
9018be22 SM |
1684 | gdb::def_vector<T> buf; |
1685 | size_t buf_pos = 0; | |
1686 | const int chunk = 4096; | |
13547ab6 DJ |
1687 | |
1688 | /* This function does not have a length parameter; it reads the | |
1689 | entire OBJECT). Also, it doesn't support objects fetched partly | |
1690 | from one target and partly from another (in a different stratum, | |
1691 | e.g. a core file and an executable). Both reasons make it | |
1692 | unsuitable for reading memory. */ | |
1693 | gdb_assert (object != TARGET_OBJECT_MEMORY); | |
1694 | ||
1695 | /* Start by reading up to 4K at a time. The target will throttle | |
1696 | this number down if necessary. */ | |
13547ab6 DJ |
1697 | while (1) |
1698 | { | |
9b409511 YQ |
1699 | ULONGEST xfered_len; |
1700 | enum target_xfer_status status; | |
1701 | ||
9018be22 SM |
1702 | buf.resize (buf_pos + chunk); |
1703 | ||
1704 | status = target_read_partial (ops, object, annex, | |
1705 | (gdb_byte *) &buf[buf_pos], | |
1706 | buf_pos, chunk, | |
9b409511 YQ |
1707 | &xfered_len); |
1708 | ||
1709 | if (status == TARGET_XFER_EOF) | |
13547ab6 DJ |
1710 | { |
1711 | /* Read all there was. */ | |
9018be22 SM |
1712 | buf.resize (buf_pos); |
1713 | return buf; | |
13547ab6 | 1714 | } |
9b409511 YQ |
1715 | else if (status != TARGET_XFER_OK) |
1716 | { | |
1717 | /* An error occurred. */ | |
9018be22 | 1718 | return {}; |
9b409511 | 1719 | } |
13547ab6 | 1720 | |
9b409511 | 1721 | buf_pos += xfered_len; |
13547ab6 | 1722 | |
13547ab6 DJ |
1723 | QUIT; |
1724 | } | |
1725 | } | |
1726 | ||
9018be22 | 1727 | /* See target.h */ |
159f81f3 | 1728 | |
9018be22 | 1729 | gdb::optional<gdb::byte_vector> |
159f81f3 | 1730 | target_read_alloc (struct target_ops *ops, enum target_object object, |
9018be22 | 1731 | const char *annex) |
159f81f3 | 1732 | { |
9018be22 | 1733 | return target_read_alloc_1<gdb_byte> (ops, object, annex); |
159f81f3 DJ |
1734 | } |
1735 | ||
b7b030ad | 1736 | /* See target.h. */ |
159f81f3 | 1737 | |
9018be22 | 1738 | gdb::optional<gdb::char_vector> |
159f81f3 DJ |
1739 | target_read_stralloc (struct target_ops *ops, enum target_object object, |
1740 | const char *annex) | |
1741 | { | |
9018be22 SM |
1742 | gdb::optional<gdb::char_vector> buf |
1743 | = target_read_alloc_1<char> (ops, object, annex); | |
159f81f3 | 1744 | |
9018be22 SM |
1745 | if (!buf) |
1746 | return {}; | |
159f81f3 | 1747 | |
d00a27c5 | 1748 | if (buf->empty () || buf->back () != '\0') |
9018be22 | 1749 | buf->push_back ('\0'); |
7313baad UW |
1750 | |
1751 | /* Check for embedded NUL bytes; but allow trailing NULs. */ | |
9018be22 SM |
1752 | for (auto it = std::find (buf->begin (), buf->end (), '\0'); |
1753 | it != buf->end (); it++) | |
1754 | if (*it != '\0') | |
7313baad UW |
1755 | { |
1756 | warning (_("target object %d, annex %s, " | |
1757 | "contained unexpected null characters"), | |
1758 | (int) object, annex ? annex : "(none)"); | |
1759 | break; | |
1760 | } | |
159f81f3 | 1761 | |
9018be22 | 1762 | return buf; |
159f81f3 DJ |
1763 | } |
1764 | ||
b6591e8b AC |
1765 | /* Memory transfer methods. */ |
1766 | ||
1767 | void | |
1b0ba102 | 1768 | get_target_memory (struct target_ops *ops, CORE_ADDR addr, gdb_byte *buf, |
b6591e8b AC |
1769 | LONGEST len) |
1770 | { | |
07b82ea5 PA |
1771 | /* This method is used to read from an alternate, non-current |
1772 | target. This read must bypass the overlay support (as symbols | |
1773 | don't match this target), and GDB's internal cache (wrong cache | |
1774 | for this target). */ | |
1775 | if (target_read (ops, TARGET_OBJECT_RAW_MEMORY, NULL, buf, addr, len) | |
b6591e8b | 1776 | != len) |
578d3588 | 1777 | memory_error (TARGET_XFER_E_IO, addr); |
b6591e8b AC |
1778 | } |
1779 | ||
1780 | ULONGEST | |
5d502164 MS |
1781 | get_target_memory_unsigned (struct target_ops *ops, CORE_ADDR addr, |
1782 | int len, enum bfd_endian byte_order) | |
b6591e8b | 1783 | { |
f6519ebc | 1784 | gdb_byte buf[sizeof (ULONGEST)]; |
b6591e8b AC |
1785 | |
1786 | gdb_assert (len <= sizeof (buf)); | |
1787 | get_target_memory (ops, addr, buf, len); | |
e17a4113 | 1788 | return extract_unsigned_integer (buf, len, byte_order); |
b6591e8b AC |
1789 | } |
1790 | ||
3db08215 MM |
1791 | /* See target.h. */ |
1792 | ||
d914c394 SS |
1793 | int |
1794 | target_insert_breakpoint (struct gdbarch *gdbarch, | |
1795 | struct bp_target_info *bp_tgt) | |
1796 | { | |
1797 | if (!may_insert_breakpoints) | |
1798 | { | |
1799 | warning (_("May not insert breakpoints")); | |
1800 | return 1; | |
1801 | } | |
1802 | ||
8b88a78e | 1803 | return current_top_target ()->insert_breakpoint (gdbarch, bp_tgt); |
d914c394 SS |
1804 | } |
1805 | ||
3db08215 MM |
1806 | /* See target.h. */ |
1807 | ||
d914c394 | 1808 | int |
6b84065d | 1809 | target_remove_breakpoint (struct gdbarch *gdbarch, |
73971819 PA |
1810 | struct bp_target_info *bp_tgt, |
1811 | enum remove_bp_reason reason) | |
d914c394 SS |
1812 | { |
1813 | /* This is kind of a weird case to handle, but the permission might | |
1814 | have been changed after breakpoints were inserted - in which case | |
1815 | we should just take the user literally and assume that any | |
1816 | breakpoints should be left in place. */ | |
1817 | if (!may_insert_breakpoints) | |
1818 | { | |
1819 | warning (_("May not remove breakpoints")); | |
1820 | return 1; | |
1821 | } | |
1822 | ||
8b88a78e | 1823 | return current_top_target ()->remove_breakpoint (gdbarch, bp_tgt, reason); |
d914c394 SS |
1824 | } |
1825 | ||
c906108c | 1826 | static void |
1d12d88f | 1827 | info_target_command (const char *args, int from_tty) |
c906108c | 1828 | { |
c906108c | 1829 | int has_all_mem = 0; |
c5aa993b | 1830 | |
a42d7dd8 TT |
1831 | if (current_program_space->symfile_object_file != NULL) |
1832 | { | |
1833 | objfile *objf = current_program_space->symfile_object_file; | |
1834 | printf_unfiltered (_("Symbols from \"%s\".\n"), | |
1835 | objfile_name (objf)); | |
1836 | } | |
c906108c | 1837 | |
b6a8c27b | 1838 | for (target_ops *t = current_top_target (); t != NULL; t = t->beneath ()) |
c906108c | 1839 | { |
f6ac5f3d | 1840 | if (!t->has_memory ()) |
c906108c SS |
1841 | continue; |
1842 | ||
66b4deae | 1843 | if ((int) (t->stratum ()) <= (int) dummy_stratum) |
c906108c SS |
1844 | continue; |
1845 | if (has_all_mem) | |
3e43a32a MS |
1846 | printf_unfiltered (_("\tWhile running this, " |
1847 | "GDB does not access memory from...\n")); | |
f6ac5f3d PA |
1848 | printf_unfiltered ("%s:\n", t->longname ()); |
1849 | t->files_info (); | |
1850 | has_all_mem = t->has_all_memory (); | |
c906108c SS |
1851 | } |
1852 | } | |
1853 | ||
fd79ecee DJ |
1854 | /* This function is called before any new inferior is created, e.g. |
1855 | by running a program, attaching, or connecting to a target. | |
1856 | It cleans up any state from previous invocations which might | |
1857 | change between runs. This is a subset of what target_preopen | |
1858 | resets (things which might change between targets). */ | |
1859 | ||
1860 | void | |
1861 | target_pre_inferior (int from_tty) | |
1862 | { | |
c378eb4e | 1863 | /* Clear out solib state. Otherwise the solib state of the previous |
b9db4ced | 1864 | inferior might have survived and is entirely wrong for the new |
c378eb4e | 1865 | target. This has been observed on GNU/Linux using glibc 2.3. How |
b9db4ced UW |
1866 | to reproduce: |
1867 | ||
1868 | bash$ ./foo& | |
1869 | [1] 4711 | |
1870 | bash$ ./foo& | |
1871 | [1] 4712 | |
1872 | bash$ gdb ./foo | |
1873 | [...] | |
1874 | (gdb) attach 4711 | |
1875 | (gdb) detach | |
1876 | (gdb) attach 4712 | |
1877 | Cannot access memory at address 0xdeadbeef | |
1878 | */ | |
b9db4ced | 1879 | |
50c71eaf PA |
1880 | /* In some OSs, the shared library list is the same/global/shared |
1881 | across inferiors. If code is shared between processes, so are | |
1882 | memory regions and features. */ | |
f5656ead | 1883 | if (!gdbarch_has_global_solist (target_gdbarch ())) |
50c71eaf PA |
1884 | { |
1885 | no_shared_libraries (NULL, from_tty); | |
1886 | ||
1887 | invalidate_target_mem_regions (); | |
424163ea | 1888 | |
50c71eaf PA |
1889 | target_clear_description (); |
1890 | } | |
8ffcbaaf | 1891 | |
e9756d52 PP |
1892 | /* attach_flag may be set if the previous process associated with |
1893 | the inferior was attached to. */ | |
1894 | current_inferior ()->attach_flag = 0; | |
1895 | ||
5d5658a1 PA |
1896 | current_inferior ()->highest_thread_num = 0; |
1897 | ||
8ffcbaaf | 1898 | agent_capability_invalidate (); |
fd79ecee DJ |
1899 | } |
1900 | ||
c906108c SS |
1901 | /* This is to be called by the open routine before it does |
1902 | anything. */ | |
1903 | ||
1904 | void | |
fba45db2 | 1905 | target_preopen (int from_tty) |
c906108c | 1906 | { |
c5aa993b | 1907 | dont_repeat (); |
c906108c | 1908 | |
5b6d1e4f | 1909 | if (current_inferior ()->pid != 0) |
c5aa993b | 1910 | { |
adf40b2e | 1911 | if (!from_tty |
55f6301a | 1912 | || !target_has_execution () |
b8fa0bfa | 1913 | || query (_("A program is being debugged already. Kill it? "))) |
5b6d1e4f PA |
1914 | { |
1915 | /* Core inferiors actually should be detached, not | |
1916 | killed. */ | |
55f6301a | 1917 | if (target_has_execution ()) |
5b6d1e4f PA |
1918 | target_kill (); |
1919 | else | |
1920 | target_detach (current_inferior (), 0); | |
1921 | } | |
c906108c | 1922 | else |
8a3fe4f8 | 1923 | error (_("Program not killed.")); |
c906108c SS |
1924 | } |
1925 | ||
1926 | /* Calling target_kill may remove the target from the stack. But if | |
1927 | it doesn't (which seems like a win for UDI), remove it now. */ | |
87ab71f0 PA |
1928 | /* Leave the exec target, though. The user may be switching from a |
1929 | live process to a core of the same program. */ | |
460014f5 | 1930 | pop_all_targets_above (file_stratum); |
fd79ecee DJ |
1931 | |
1932 | target_pre_inferior (from_tty); | |
c906108c SS |
1933 | } |
1934 | ||
6bd6f3b6 | 1935 | /* See target.h. */ |
c906108c SS |
1936 | |
1937 | void | |
6e1e1966 | 1938 | target_detach (inferior *inf, int from_tty) |
c906108c | 1939 | { |
5783e150 PW |
1940 | /* After we have detached, we will clear the register cache for this inferior |
1941 | by calling registers_changed_ptid. We must save the pid_ptid before | |
1942 | detaching, as the target detach method will clear inf->pid. */ | |
1943 | ptid_t save_pid_ptid = ptid_t (inf->pid); | |
1944 | ||
6e1e1966 SM |
1945 | /* As long as some to_detach implementations rely on the current_inferior |
1946 | (either directly, or indirectly, like through target_gdbarch or by | |
1947 | reading memory), INF needs to be the current inferior. When that | |
1948 | requirement will become no longer true, then we can remove this | |
1949 | assertion. */ | |
1950 | gdb_assert (inf == current_inferior ()); | |
1951 | ||
f5656ead | 1952 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
1953 | /* Don't remove global breakpoints here. They're removed on |
1954 | disconnection from the target. */ | |
1955 | ; | |
1956 | else | |
1957 | /* If we're in breakpoints-always-inserted mode, have to remove | |
00431a78 PA |
1958 | breakpoints before detaching. */ |
1959 | remove_breakpoints_inf (current_inferior ()); | |
74960c60 | 1960 | |
24291992 PA |
1961 | prepare_for_detach (); |
1962 | ||
5b6d1e4f PA |
1963 | /* Hold a strong reference because detaching may unpush the |
1964 | target. */ | |
1965 | auto proc_target_ref = target_ops_ref::new_reference (inf->process_target ()); | |
1966 | ||
8b88a78e | 1967 | current_top_target ()->detach (inf, from_tty); |
799efbe8 | 1968 | |
5b6d1e4f PA |
1969 | process_stratum_target *proc_target |
1970 | = as_process_stratum_target (proc_target_ref.get ()); | |
1971 | ||
1972 | registers_changed_ptid (proc_target, save_pid_ptid); | |
799efbe8 PW |
1973 | |
1974 | /* We have to ensure we have no frame cache left. Normally, | |
5783e150 PW |
1975 | registers_changed_ptid (save_pid_ptid) calls reinit_frame_cache when |
1976 | inferior_ptid matches save_pid_ptid, but in our case, it does not | |
799efbe8 PW |
1977 | call it, as inferior_ptid has been reset. */ |
1978 | reinit_frame_cache (); | |
c906108c SS |
1979 | } |
1980 | ||
6ad8ae5c | 1981 | void |
fee354ee | 1982 | target_disconnect (const char *args, int from_tty) |
6ad8ae5c | 1983 | { |
50c71eaf PA |
1984 | /* If we're in breakpoints-always-inserted mode or if breakpoints |
1985 | are global across processes, we have to remove them before | |
1986 | disconnecting. */ | |
74960c60 VP |
1987 | remove_breakpoints (); |
1988 | ||
8b88a78e | 1989 | current_top_target ()->disconnect (args, from_tty); |
6ad8ae5c DJ |
1990 | } |
1991 | ||
f2b9e3df SDJ |
1992 | /* See target/target.h. */ |
1993 | ||
117de6a9 | 1994 | ptid_t |
b60cea74 TT |
1995 | target_wait (ptid_t ptid, struct target_waitstatus *status, |
1996 | target_wait_flags options) | |
117de6a9 | 1997 | { |
d3a07122 SM |
1998 | target_ops *target = current_top_target (); |
1999 | ||
2000 | if (!target->can_async_p ()) | |
2001 | gdb_assert ((options & TARGET_WNOHANG) == 0); | |
2002 | ||
2003 | return target->wait (ptid, status, options); | |
117de6a9 PA |
2004 | } |
2005 | ||
0b333c5e PA |
2006 | /* See target.h. */ |
2007 | ||
2008 | ptid_t | |
2009 | default_target_wait (struct target_ops *ops, | |
2010 | ptid_t ptid, struct target_waitstatus *status, | |
b60cea74 | 2011 | target_wait_flags options) |
0b333c5e PA |
2012 | { |
2013 | status->kind = TARGET_WAITKIND_IGNORE; | |
2014 | return minus_one_ptid; | |
2015 | } | |
2016 | ||
a068643d | 2017 | std::string |
117de6a9 PA |
2018 | target_pid_to_str (ptid_t ptid) |
2019 | { | |
8b88a78e | 2020 | return current_top_target ()->pid_to_str (ptid); |
117de6a9 PA |
2021 | } |
2022 | ||
73ede765 | 2023 | const char * |
4694da01 TT |
2024 | target_thread_name (struct thread_info *info) |
2025 | { | |
5b6d1e4f PA |
2026 | gdb_assert (info->inf == current_inferior ()); |
2027 | ||
8b88a78e | 2028 | return current_top_target ()->thread_name (info); |
4694da01 TT |
2029 | } |
2030 | ||
e04ee09e KB |
2031 | struct thread_info * |
2032 | target_thread_handle_to_thread_info (const gdb_byte *thread_handle, | |
2033 | int handle_len, | |
2034 | struct inferior *inf) | |
2035 | { | |
8b88a78e | 2036 | return current_top_target ()->thread_handle_to_thread_info (thread_handle, |
f6ac5f3d | 2037 | handle_len, inf); |
e04ee09e KB |
2038 | } |
2039 | ||
3d6c6204 KB |
2040 | /* See target.h. */ |
2041 | ||
2042 | gdb::byte_vector | |
2043 | target_thread_info_to_thread_handle (struct thread_info *tip) | |
2044 | { | |
2045 | return current_top_target ()->thread_info_to_thread_handle (tip); | |
2046 | } | |
2047 | ||
e1ac3328 | 2048 | void |
2ea28649 | 2049 | target_resume (ptid_t ptid, int step, enum gdb_signal signal) |
e1ac3328 | 2050 | { |
5b6d1e4f PA |
2051 | process_stratum_target *curr_target = current_inferior ()->process_target (); |
2052 | ||
4e5d721f | 2053 | target_dcache_invalidate (); |
28439f5e | 2054 | |
8b88a78e | 2055 | current_top_target ()->resume (ptid, step, signal); |
28439f5e | 2056 | |
5b6d1e4f | 2057 | registers_changed_ptid (curr_target, ptid); |
251bde03 | 2058 | /* We only set the internal executing state here. The user/frontend |
f2ffa92b PA |
2059 | running state is set at a higher level. This also clears the |
2060 | thread's stop_pc as side effect. */ | |
719546c4 | 2061 | set_executing (curr_target, ptid, true); |
5b6d1e4f | 2062 | clear_inline_frame_state (curr_target, ptid); |
e1ac3328 | 2063 | } |
2455069d | 2064 | |
85ad3aaf PA |
2065 | /* If true, target_commit_resume is a nop. */ |
2066 | static int defer_target_commit_resume; | |
2067 | ||
2068 | /* See target.h. */ | |
2069 | ||
2070 | void | |
2071 | target_commit_resume (void) | |
2072 | { | |
85ad3aaf PA |
2073 | if (defer_target_commit_resume) |
2074 | return; | |
2075 | ||
8b88a78e | 2076 | current_top_target ()->commit_resume (); |
85ad3aaf PA |
2077 | } |
2078 | ||
2079 | /* See target.h. */ | |
2080 | ||
a9bc57b9 TT |
2081 | scoped_restore_tmpl<int> |
2082 | make_scoped_defer_target_commit_resume () | |
85ad3aaf | 2083 | { |
a9bc57b9 | 2084 | return make_scoped_restore (&defer_target_commit_resume, 1); |
85ad3aaf PA |
2085 | } |
2086 | ||
2455069d | 2087 | void |
adc6a863 | 2088 | target_pass_signals (gdb::array_view<const unsigned char> pass_signals) |
2455069d | 2089 | { |
adc6a863 | 2090 | current_top_target ()->pass_signals (pass_signals); |
2455069d UW |
2091 | } |
2092 | ||
9b224c5e | 2093 | void |
adc6a863 | 2094 | target_program_signals (gdb::array_view<const unsigned char> program_signals) |
9b224c5e | 2095 | { |
adc6a863 | 2096 | current_top_target ()->program_signals (program_signals); |
9b224c5e PA |
2097 | } |
2098 | ||
5ab2fbf1 SM |
2099 | static bool |
2100 | default_follow_fork (struct target_ops *self, bool follow_child, | |
2101 | bool detach_fork) | |
098dba18 TT |
2102 | { |
2103 | /* Some target returned a fork event, but did not know how to follow it. */ | |
2104 | internal_error (__FILE__, __LINE__, | |
2105 | _("could not find a target to follow fork")); | |
2106 | } | |
2107 | ||
ee057212 DJ |
2108 | /* Look through the list of possible targets for a target that can |
2109 | follow forks. */ | |
2110 | ||
5ab2fbf1 SM |
2111 | bool |
2112 | target_follow_fork (bool follow_child, bool detach_fork) | |
ee057212 | 2113 | { |
8b88a78e | 2114 | return current_top_target ()->follow_fork (follow_child, detach_fork); |
ee057212 DJ |
2115 | } |
2116 | ||
94585166 DB |
2117 | /* Target wrapper for follow exec hook. */ |
2118 | ||
2119 | void | |
4ca51187 | 2120 | target_follow_exec (struct inferior *inf, const char *execd_pathname) |
94585166 | 2121 | { |
8b88a78e | 2122 | current_top_target ()->follow_exec (inf, execd_pathname); |
94585166 DB |
2123 | } |
2124 | ||
8d657035 TT |
2125 | static void |
2126 | default_mourn_inferior (struct target_ops *self) | |
2127 | { | |
2128 | internal_error (__FILE__, __LINE__, | |
2129 | _("could not find a target to follow mourn inferior")); | |
2130 | } | |
2131 | ||
136d6dae | 2132 | void |
bc1e6c81 | 2133 | target_mourn_inferior (ptid_t ptid) |
136d6dae | 2134 | { |
d7e15655 | 2135 | gdb_assert (ptid == inferior_ptid); |
8b88a78e | 2136 | current_top_target ()->mourn_inferior (); |
136d6dae | 2137 | |
8d657035 TT |
2138 | /* We no longer need to keep handles on any of the object files. |
2139 | Make sure to release them to avoid unnecessarily locking any | |
2140 | of them while we're not actually debugging. */ | |
2141 | bfd_cache_close_all (); | |
136d6dae VP |
2142 | } |
2143 | ||
424163ea DJ |
2144 | /* Look for a target which can describe architectural features, starting |
2145 | from TARGET. If we find one, return its description. */ | |
2146 | ||
2147 | const struct target_desc * | |
2148 | target_read_description (struct target_ops *target) | |
2149 | { | |
f6ac5f3d | 2150 | return target->read_description (); |
424163ea DJ |
2151 | } |
2152 | ||
08388c79 | 2153 | |
58a5184e TT |
2154 | /* Default implementation of memory-searching. */ |
2155 | ||
2156 | static int | |
2157 | default_search_memory (struct target_ops *self, | |
2158 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
2159 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2160 | CORE_ADDR *found_addrp) | |
2161 | { | |
4a72de73 TT |
2162 | auto read_memory = [=] (CORE_ADDR addr, gdb_byte *result, size_t len) |
2163 | { | |
2164 | return target_read (current_top_target (), TARGET_OBJECT_MEMORY, NULL, | |
2165 | result, addr, len) == len; | |
2166 | }; | |
2167 | ||
58a5184e | 2168 | /* Start over from the top of the target stack. */ |
4a72de73 | 2169 | return simple_search_memory (read_memory, start_addr, search_space_len, |
58a5184e TT |
2170 | pattern, pattern_len, found_addrp); |
2171 | } | |
2172 | ||
08388c79 DE |
2173 | /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the |
2174 | sequence of bytes in PATTERN with length PATTERN_LEN. | |
2175 | ||
2176 | The result is 1 if found, 0 if not found, and -1 if there was an error | |
2177 | requiring halting of the search (e.g. memory read error). | |
2178 | If the pattern is found the address is recorded in FOUND_ADDRP. */ | |
2179 | ||
2180 | int | |
2181 | target_search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
2182 | const gdb_byte *pattern, ULONGEST pattern_len, | |
2183 | CORE_ADDR *found_addrp) | |
2184 | { | |
8b88a78e | 2185 | return current_top_target ()->search_memory (start_addr, search_space_len, |
f6ac5f3d | 2186 | pattern, pattern_len, found_addrp); |
08388c79 DE |
2187 | } |
2188 | ||
8edfe269 DJ |
2189 | /* Look through the currently pushed targets. If none of them will |
2190 | be able to restart the currently running process, issue an error | |
2191 | message. */ | |
2192 | ||
2193 | void | |
2194 | target_require_runnable (void) | |
2195 | { | |
b6a8c27b | 2196 | for (target_ops *t = current_top_target (); t != NULL; t = t->beneath ()) |
8edfe269 DJ |
2197 | { |
2198 | /* If this target knows how to create a new program, then | |
2199 | assume we will still be able to after killing the current | |
2200 | one. Either killing and mourning will not pop T, or else | |
2201 | find_default_run_target will find it again. */ | |
f6ac5f3d | 2202 | if (t->can_create_inferior ()) |
8edfe269 DJ |
2203 | return; |
2204 | ||
548740d6 | 2205 | /* Do not worry about targets at certain strata that can not |
8edfe269 DJ |
2206 | create inferiors. Assume they will be pushed again if |
2207 | necessary, and continue to the process_stratum. */ | |
66b4deae | 2208 | if (t->stratum () > process_stratum) |
8edfe269 DJ |
2209 | continue; |
2210 | ||
3e43a32a MS |
2211 | error (_("The \"%s\" target does not support \"run\". " |
2212 | "Try \"help target\" or \"continue\"."), | |
f6ac5f3d | 2213 | t->shortname ()); |
8edfe269 DJ |
2214 | } |
2215 | ||
2216 | /* This function is only called if the target is running. In that | |
2217 | case there should have been a process_stratum target and it | |
c378eb4e | 2218 | should either know how to create inferiors, or not... */ |
9b20d036 | 2219 | internal_error (__FILE__, __LINE__, _("No targets found")); |
8edfe269 DJ |
2220 | } |
2221 | ||
6a3cb8e8 PA |
2222 | /* Whether GDB is allowed to fall back to the default run target for |
2223 | "run", "attach", etc. when no target is connected yet. */ | |
491144b5 | 2224 | static bool auto_connect_native_target = true; |
6a3cb8e8 PA |
2225 | |
2226 | static void | |
2227 | show_auto_connect_native_target (struct ui_file *file, int from_tty, | |
2228 | struct cmd_list_element *c, const char *value) | |
2229 | { | |
2230 | fprintf_filtered (file, | |
2231 | _("Whether GDB may automatically connect to the " | |
2232 | "native target is %s.\n"), | |
2233 | value); | |
2234 | } | |
2235 | ||
d9f719f1 PA |
2236 | /* A pointer to the target that can respond to "run" or "attach". |
2237 | Native targets are always singletons and instantiated early at GDB | |
2238 | startup. */ | |
2239 | static target_ops *the_native_target; | |
2240 | ||
2241 | /* See target.h. */ | |
2242 | ||
2243 | void | |
2244 | set_native_target (target_ops *target) | |
2245 | { | |
2246 | if (the_native_target != NULL) | |
2247 | internal_error (__FILE__, __LINE__, | |
2248 | _("native target already set (\"%s\")."), | |
2249 | the_native_target->longname ()); | |
2250 | ||
2251 | the_native_target = target; | |
2252 | } | |
2253 | ||
2254 | /* See target.h. */ | |
2255 | ||
2256 | target_ops * | |
2257 | get_native_target () | |
2258 | { | |
2259 | return the_native_target; | |
2260 | } | |
2261 | ||
c906108c SS |
2262 | /* Look through the list of possible targets for a target that can |
2263 | execute a run or attach command without any other data. This is | |
2264 | used to locate the default process stratum. | |
2265 | ||
5f667f2d PA |
2266 | If DO_MESG is not NULL, the result is always valid (error() is |
2267 | called for errors); else, return NULL on error. */ | |
c906108c SS |
2268 | |
2269 | static struct target_ops * | |
a121b7c1 | 2270 | find_default_run_target (const char *do_mesg) |
c906108c | 2271 | { |
d9f719f1 PA |
2272 | if (auto_connect_native_target && the_native_target != NULL) |
2273 | return the_native_target; | |
c906108c | 2274 | |
d9f719f1 PA |
2275 | if (do_mesg != NULL) |
2276 | error (_("Don't know how to %s. Try \"help target\"."), do_mesg); | |
2277 | return NULL; | |
c906108c SS |
2278 | } |
2279 | ||
b3ccfe11 | 2280 | /* See target.h. */ |
c906108c | 2281 | |
b3ccfe11 TT |
2282 | struct target_ops * |
2283 | find_attach_target (void) | |
c906108c | 2284 | { |
b3ccfe11 | 2285 | /* If a target on the current stack can attach, use it. */ |
b6a8c27b | 2286 | for (target_ops *t = current_top_target (); t != NULL; t = t->beneath ()) |
b3ccfe11 | 2287 | { |
f6ac5f3d | 2288 | if (t->can_attach ()) |
d9f719f1 | 2289 | return t; |
b3ccfe11 | 2290 | } |
c906108c | 2291 | |
b3ccfe11 | 2292 | /* Otherwise, use the default run target for attaching. */ |
d9f719f1 | 2293 | return find_default_run_target ("attach"); |
b84876c2 PA |
2294 | } |
2295 | ||
b3ccfe11 | 2296 | /* See target.h. */ |
b84876c2 | 2297 | |
b3ccfe11 TT |
2298 | struct target_ops * |
2299 | find_run_target (void) | |
9908b566 | 2300 | { |
f6ac5f3d | 2301 | /* If a target on the current stack can run, use it. */ |
b6a8c27b | 2302 | for (target_ops *t = current_top_target (); t != NULL; t = t->beneath ()) |
b3ccfe11 | 2303 | { |
f6ac5f3d | 2304 | if (t->can_create_inferior ()) |
d9f719f1 | 2305 | return t; |
b3ccfe11 | 2306 | } |
5d502164 | 2307 | |
b3ccfe11 | 2308 | /* Otherwise, use the default run target. */ |
d9f719f1 | 2309 | return find_default_run_target ("run"); |
9908b566 VP |
2310 | } |
2311 | ||
f6ac5f3d PA |
2312 | bool |
2313 | target_ops::info_proc (const char *args, enum info_proc_what what) | |
2314 | { | |
2315 | return false; | |
2316 | } | |
2317 | ||
145b16a9 UW |
2318 | /* Implement the "info proc" command. */ |
2319 | ||
451b7c33 | 2320 | int |
7bc112c1 | 2321 | target_info_proc (const char *args, enum info_proc_what what) |
145b16a9 UW |
2322 | { |
2323 | struct target_ops *t; | |
2324 | ||
2325 | /* If we're already connected to something that can get us OS | |
2326 | related data, use it. Otherwise, try using the native | |
2327 | target. */ | |
f6ac5f3d PA |
2328 | t = find_target_at (process_stratum); |
2329 | if (t == NULL) | |
145b16a9 UW |
2330 | t = find_default_run_target (NULL); |
2331 | ||
b6a8c27b | 2332 | for (; t != NULL; t = t->beneath ()) |
145b16a9 | 2333 | { |
f6ac5f3d | 2334 | if (t->info_proc (args, what)) |
145b16a9 | 2335 | { |
145b16a9 UW |
2336 | if (targetdebug) |
2337 | fprintf_unfiltered (gdb_stdlog, | |
2338 | "target_info_proc (\"%s\", %d)\n", args, what); | |
2339 | ||
451b7c33 | 2340 | return 1; |
145b16a9 UW |
2341 | } |
2342 | } | |
2343 | ||
451b7c33 | 2344 | return 0; |
145b16a9 UW |
2345 | } |
2346 | ||
03583c20 | 2347 | static int |
2bfc0540 | 2348 | find_default_supports_disable_randomization (struct target_ops *self) |
03583c20 UW |
2349 | { |
2350 | struct target_ops *t; | |
2351 | ||
2352 | t = find_default_run_target (NULL); | |
f6ac5f3d PA |
2353 | if (t != NULL) |
2354 | return t->supports_disable_randomization (); | |
03583c20 UW |
2355 | return 0; |
2356 | } | |
2357 | ||
2358 | int | |
2359 | target_supports_disable_randomization (void) | |
2360 | { | |
8b88a78e | 2361 | return current_top_target ()->supports_disable_randomization (); |
03583c20 | 2362 | } |
9908b566 | 2363 | |
1fb77080 SDJ |
2364 | /* See target/target.h. */ |
2365 | ||
2366 | int | |
2367 | target_supports_multi_process (void) | |
2368 | { | |
8b88a78e | 2369 | return current_top_target ()->supports_multi_process (); |
1fb77080 SDJ |
2370 | } |
2371 | ||
b7b030ad TT |
2372 | /* See target.h. */ |
2373 | ||
9018be22 | 2374 | gdb::optional<gdb::char_vector> |
07e059b5 VP |
2375 | target_get_osdata (const char *type) |
2376 | { | |
07e059b5 VP |
2377 | struct target_ops *t; |
2378 | ||
739ef7fb PA |
2379 | /* If we're already connected to something that can get us OS |
2380 | related data, use it. Otherwise, try using the native | |
2381 | target. */ | |
f6ac5f3d PA |
2382 | t = find_target_at (process_stratum); |
2383 | if (t == NULL) | |
739ef7fb | 2384 | t = find_default_run_target ("get OS data"); |
07e059b5 VP |
2385 | |
2386 | if (!t) | |
9018be22 | 2387 | return {}; |
07e059b5 | 2388 | |
6d097e65 | 2389 | return target_read_stralloc (t, TARGET_OBJECT_OSDATA, type); |
07e059b5 VP |
2390 | } |
2391 | ||
8eaff7cd TT |
2392 | /* Determine the current address space of thread PTID. */ |
2393 | ||
2394 | struct address_space * | |
2395 | target_thread_address_space (ptid_t ptid) | |
2396 | { | |
2397 | struct address_space *aspace; | |
2398 | ||
8b88a78e | 2399 | aspace = current_top_target ()->thread_address_space (ptid); |
8eaff7cd TT |
2400 | gdb_assert (aspace != NULL); |
2401 | ||
8eaff7cd TT |
2402 | return aspace; |
2403 | } | |
2404 | ||
b6a8c27b PA |
2405 | /* See target.h. */ |
2406 | ||
2407 | target_ops * | |
2408 | target_ops::beneath () const | |
2409 | { | |
5b6d1e4f | 2410 | return current_inferior ()->find_target_beneath (this); |
b6a8c27b PA |
2411 | } |
2412 | ||
f6ac5f3d PA |
2413 | void |
2414 | target_ops::close () | |
2415 | { | |
2416 | } | |
2417 | ||
2418 | bool | |
2419 | target_ops::can_attach () | |
2420 | { | |
2421 | return 0; | |
2422 | } | |
2423 | ||
2424 | void | |
2425 | target_ops::attach (const char *, int) | |
2426 | { | |
2427 | gdb_assert_not_reached ("target_ops::attach called"); | |
2428 | } | |
2429 | ||
2430 | bool | |
2431 | target_ops::can_create_inferior () | |
2432 | { | |
2433 | return 0; | |
2434 | } | |
2435 | ||
2436 | void | |
2437 | target_ops::create_inferior (const char *, const std::string &, | |
2438 | char **, int) | |
2439 | { | |
2440 | gdb_assert_not_reached ("target_ops::create_inferior called"); | |
2441 | } | |
2442 | ||
57810aa7 | 2443 | bool |
f6ac5f3d PA |
2444 | target_ops::can_run () |
2445 | { | |
57810aa7 | 2446 | return false; |
f6ac5f3d PA |
2447 | } |
2448 | ||
2449 | int | |
2450 | target_can_run () | |
2451 | { | |
b6a8c27b | 2452 | for (target_ops *t = current_top_target (); t != NULL; t = t->beneath ()) |
f6ac5f3d PA |
2453 | { |
2454 | if (t->can_run ()) | |
2455 | return 1; | |
2456 | } | |
2457 | ||
2458 | return 0; | |
2459 | } | |
7313baad UW |
2460 | |
2461 | /* Target file operations. */ | |
2462 | ||
2463 | static struct target_ops * | |
2464 | default_fileio_target (void) | |
2465 | { | |
f6ac5f3d PA |
2466 | struct target_ops *t; |
2467 | ||
7313baad UW |
2468 | /* If we're already connected to something that can perform |
2469 | file I/O, use it. Otherwise, try using the native target. */ | |
f6ac5f3d PA |
2470 | t = find_target_at (process_stratum); |
2471 | if (t != NULL) | |
2472 | return t; | |
2473 | return find_default_run_target ("file I/O"); | |
7313baad UW |
2474 | } |
2475 | ||
1c4b552b GB |
2476 | /* File handle for target file operations. */ |
2477 | ||
5ff79300 | 2478 | struct fileio_fh_t |
1c4b552b | 2479 | { |
20db9c52 PA |
2480 | /* The target on which this file is open. NULL if the target is |
2481 | meanwhile closed while the handle is open. */ | |
5ff79300 | 2482 | target_ops *target; |
1c4b552b GB |
2483 | |
2484 | /* The file descriptor on the target. */ | |
5ff79300 | 2485 | int target_fd; |
1c4b552b | 2486 | |
5ff79300 PA |
2487 | /* Check whether this fileio_fh_t represents a closed file. */ |
2488 | bool is_closed () | |
2489 | { | |
2490 | return target_fd < 0; | |
2491 | } | |
2492 | }; | |
1c4b552b GB |
2493 | |
2494 | /* Vector of currently open file handles. The value returned by | |
2495 | target_fileio_open and passed as the FD argument to other | |
2496 | target_fileio_* functions is an index into this vector. This | |
2497 | vector's entries are never freed; instead, files are marked as | |
2498 | closed, and the handle becomes available for reuse. */ | |
5ff79300 | 2499 | static std::vector<fileio_fh_t> fileio_fhandles; |
1c4b552b GB |
2500 | |
2501 | /* Index into fileio_fhandles of the lowest handle that might be | |
2502 | closed. This permits handle reuse without searching the whole | |
2503 | list each time a new file is opened. */ | |
2504 | static int lowest_closed_fd; | |
2505 | ||
20db9c52 PA |
2506 | /* Invalidate the target associated with open handles that were open |
2507 | on target TARG, since we're about to close (and maybe destroy) the | |
2508 | target. The handles remain open from the client's perspective, but | |
2509 | trying to do anything with them other than closing them will fail | |
2510 | with EIO. */ | |
2511 | ||
2512 | static void | |
2513 | fileio_handles_invalidate_target (target_ops *targ) | |
2514 | { | |
2515 | for (fileio_fh_t &fh : fileio_fhandles) | |
2516 | if (fh.target == targ) | |
2517 | fh.target = NULL; | |
2518 | } | |
2519 | ||
1c4b552b GB |
2520 | /* Acquire a target fileio file descriptor. */ |
2521 | ||
2522 | static int | |
5ff79300 | 2523 | acquire_fileio_fd (target_ops *target, int target_fd) |
1c4b552b | 2524 | { |
1c4b552b | 2525 | /* Search for closed handles to reuse. */ |
5ff79300 PA |
2526 | for (; lowest_closed_fd < fileio_fhandles.size (); lowest_closed_fd++) |
2527 | { | |
2528 | fileio_fh_t &fh = fileio_fhandles[lowest_closed_fd]; | |
2529 | ||
2530 | if (fh.is_closed ()) | |
2531 | break; | |
2532 | } | |
1c4b552b GB |
2533 | |
2534 | /* Push a new handle if no closed handles were found. */ | |
5ff79300 PA |
2535 | if (lowest_closed_fd == fileio_fhandles.size ()) |
2536 | fileio_fhandles.push_back (fileio_fh_t {target, target_fd}); | |
2537 | else | |
2538 | fileio_fhandles[lowest_closed_fd] = {target, target_fd}; | |
1c4b552b | 2539 | |
5ff79300 PA |
2540 | /* Should no longer be marked closed. */ |
2541 | gdb_assert (!fileio_fhandles[lowest_closed_fd].is_closed ()); | |
1c4b552b GB |
2542 | |
2543 | /* Return its index, and start the next lookup at | |
2544 | the next index. */ | |
2545 | return lowest_closed_fd++; | |
2546 | } | |
2547 | ||
2548 | /* Release a target fileio file descriptor. */ | |
2549 | ||
2550 | static void | |
2551 | release_fileio_fd (int fd, fileio_fh_t *fh) | |
2552 | { | |
5ff79300 | 2553 | fh->target_fd = -1; |
325fac50 | 2554 | lowest_closed_fd = std::min (lowest_closed_fd, fd); |
1c4b552b GB |
2555 | } |
2556 | ||
2557 | /* Return a pointer to the fileio_fhandle_t corresponding to FD. */ | |
2558 | ||
5ff79300 PA |
2559 | static fileio_fh_t * |
2560 | fileio_fd_to_fh (int fd) | |
2561 | { | |
2562 | return &fileio_fhandles[fd]; | |
2563 | } | |
1c4b552b | 2564 | |
f6ac5f3d PA |
2565 | |
2566 | /* Default implementations of file i/o methods. We don't want these | |
2567 | to delegate automatically, because we need to know which target | |
2568 | supported the method, in order to call it directly from within | |
2569 | pread/pwrite, etc. */ | |
2570 | ||
2571 | int | |
2572 | target_ops::fileio_open (struct inferior *inf, const char *filename, | |
2573 | int flags, int mode, int warn_if_slow, | |
2574 | int *target_errno) | |
2575 | { | |
2576 | *target_errno = FILEIO_ENOSYS; | |
2577 | return -1; | |
2578 | } | |
2579 | ||
2580 | int | |
2581 | target_ops::fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
2582 | ULONGEST offset, int *target_errno) | |
2583 | { | |
2584 | *target_errno = FILEIO_ENOSYS; | |
2585 | return -1; | |
2586 | } | |
2587 | ||
2588 | int | |
2589 | target_ops::fileio_pread (int fd, gdb_byte *read_buf, int len, | |
2590 | ULONGEST offset, int *target_errno) | |
2591 | { | |
2592 | *target_errno = FILEIO_ENOSYS; | |
2593 | return -1; | |
2594 | } | |
2595 | ||
2596 | int | |
2597 | target_ops::fileio_fstat (int fd, struct stat *sb, int *target_errno) | |
2598 | { | |
2599 | *target_errno = FILEIO_ENOSYS; | |
2600 | return -1; | |
2601 | } | |
2602 | ||
2603 | int | |
2604 | target_ops::fileio_close (int fd, int *target_errno) | |
2605 | { | |
2606 | *target_errno = FILEIO_ENOSYS; | |
2607 | return -1; | |
2608 | } | |
2609 | ||
2610 | int | |
2611 | target_ops::fileio_unlink (struct inferior *inf, const char *filename, | |
2612 | int *target_errno) | |
2613 | { | |
2614 | *target_errno = FILEIO_ENOSYS; | |
2615 | return -1; | |
2616 | } | |
2617 | ||
2618 | gdb::optional<std::string> | |
2619 | target_ops::fileio_readlink (struct inferior *inf, const char *filename, | |
2620 | int *target_errno) | |
2621 | { | |
2622 | *target_errno = FILEIO_ENOSYS; | |
2623 | return {}; | |
2624 | } | |
2625 | ||
4111f652 | 2626 | /* See target.h. */ |
12e2a5fd | 2627 | |
4111f652 PA |
2628 | int |
2629 | target_fileio_open (struct inferior *inf, const char *filename, | |
2630 | int flags, int mode, bool warn_if_slow, int *target_errno) | |
7313baad | 2631 | { |
b6a8c27b | 2632 | for (target_ops *t = default_fileio_target (); t != NULL; t = t->beneath ()) |
7313baad | 2633 | { |
f6ac5f3d PA |
2634 | int fd = t->fileio_open (inf, filename, flags, mode, |
2635 | warn_if_slow, target_errno); | |
7313baad | 2636 | |
f6ac5f3d PA |
2637 | if (fd == -1 && *target_errno == FILEIO_ENOSYS) |
2638 | continue; | |
1c4b552b | 2639 | |
f6ac5f3d PA |
2640 | if (fd < 0) |
2641 | fd = -1; | |
2642 | else | |
2643 | fd = acquire_fileio_fd (t, fd); | |
2644 | ||
2645 | if (targetdebug) | |
2646 | fprintf_unfiltered (gdb_stdlog, | |
4313b8c0 | 2647 | "target_fileio_open (%d,%s,0x%x,0%o,%d)" |
07c138c8 GB |
2648 | " = %d (%d)\n", |
2649 | inf == NULL ? 0 : inf->num, | |
7313baad | 2650 | filename, flags, mode, |
4313b8c0 GB |
2651 | warn_if_slow, fd, |
2652 | fd != -1 ? 0 : *target_errno); | |
f6ac5f3d | 2653 | return fd; |
7313baad UW |
2654 | } |
2655 | ||
2656 | *target_errno = FILEIO_ENOSYS; | |
2657 | return -1; | |
2658 | } | |
2659 | ||
12e2a5fd GB |
2660 | /* See target.h. */ |
2661 | ||
7313baad UW |
2662 | int |
2663 | target_fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
2664 | ULONGEST offset, int *target_errno) | |
2665 | { | |
1c4b552b GB |
2666 | fileio_fh_t *fh = fileio_fd_to_fh (fd); |
2667 | int ret = -1; | |
7313baad | 2668 | |
5ff79300 | 2669 | if (fh->is_closed ()) |
1c4b552b | 2670 | *target_errno = EBADF; |
20db9c52 PA |
2671 | else if (fh->target == NULL) |
2672 | *target_errno = EIO; | |
1c4b552b | 2673 | else |
f6ac5f3d PA |
2674 | ret = fh->target->fileio_pwrite (fh->target_fd, write_buf, |
2675 | len, offset, target_errno); | |
7313baad | 2676 | |
1c4b552b GB |
2677 | if (targetdebug) |
2678 | fprintf_unfiltered (gdb_stdlog, | |
2679 | "target_fileio_pwrite (%d,...,%d,%s) " | |
2680 | "= %d (%d)\n", | |
2681 | fd, len, pulongest (offset), | |
2682 | ret, ret != -1 ? 0 : *target_errno); | |
2683 | return ret; | |
7313baad UW |
2684 | } |
2685 | ||
12e2a5fd GB |
2686 | /* See target.h. */ |
2687 | ||
7313baad UW |
2688 | int |
2689 | target_fileio_pread (int fd, gdb_byte *read_buf, int len, | |
2690 | ULONGEST offset, int *target_errno) | |
2691 | { | |
1c4b552b GB |
2692 | fileio_fh_t *fh = fileio_fd_to_fh (fd); |
2693 | int ret = -1; | |
7313baad | 2694 | |
5ff79300 | 2695 | if (fh->is_closed ()) |
1c4b552b | 2696 | *target_errno = EBADF; |
20db9c52 PA |
2697 | else if (fh->target == NULL) |
2698 | *target_errno = EIO; | |
1c4b552b | 2699 | else |
f6ac5f3d PA |
2700 | ret = fh->target->fileio_pread (fh->target_fd, read_buf, |
2701 | len, offset, target_errno); | |
7313baad | 2702 | |
1c4b552b GB |
2703 | if (targetdebug) |
2704 | fprintf_unfiltered (gdb_stdlog, | |
2705 | "target_fileio_pread (%d,...,%d,%s) " | |
2706 | "= %d (%d)\n", | |
2707 | fd, len, pulongest (offset), | |
2708 | ret, ret != -1 ? 0 : *target_errno); | |
9b15c1f0 GB |
2709 | return ret; |
2710 | } | |
2711 | ||
2712 | /* See target.h. */ | |
12e2a5fd | 2713 | |
9b15c1f0 GB |
2714 | int |
2715 | target_fileio_fstat (int fd, struct stat *sb, int *target_errno) | |
2716 | { | |
2717 | fileio_fh_t *fh = fileio_fd_to_fh (fd); | |
2718 | int ret = -1; | |
2719 | ||
5ff79300 | 2720 | if (fh->is_closed ()) |
9b15c1f0 | 2721 | *target_errno = EBADF; |
20db9c52 PA |
2722 | else if (fh->target == NULL) |
2723 | *target_errno = EIO; | |
9b15c1f0 | 2724 | else |
f6ac5f3d | 2725 | ret = fh->target->fileio_fstat (fh->target_fd, sb, target_errno); |
9b15c1f0 GB |
2726 | |
2727 | if (targetdebug) | |
2728 | fprintf_unfiltered (gdb_stdlog, | |
2729 | "target_fileio_fstat (%d) = %d (%d)\n", | |
2730 | fd, ret, ret != -1 ? 0 : *target_errno); | |
1c4b552b | 2731 | return ret; |
7313baad UW |
2732 | } |
2733 | ||
12e2a5fd GB |
2734 | /* See target.h. */ |
2735 | ||
7313baad UW |
2736 | int |
2737 | target_fileio_close (int fd, int *target_errno) | |
2738 | { | |
1c4b552b GB |
2739 | fileio_fh_t *fh = fileio_fd_to_fh (fd); |
2740 | int ret = -1; | |
7313baad | 2741 | |
5ff79300 | 2742 | if (fh->is_closed ()) |
1c4b552b GB |
2743 | *target_errno = EBADF; |
2744 | else | |
7313baad | 2745 | { |
20db9c52 | 2746 | if (fh->target != NULL) |
f6ac5f3d PA |
2747 | ret = fh->target->fileio_close (fh->target_fd, |
2748 | target_errno); | |
20db9c52 PA |
2749 | else |
2750 | ret = 0; | |
1c4b552b | 2751 | release_fileio_fd (fd, fh); |
7313baad UW |
2752 | } |
2753 | ||
1c4b552b GB |
2754 | if (targetdebug) |
2755 | fprintf_unfiltered (gdb_stdlog, | |
2756 | "target_fileio_close (%d) = %d (%d)\n", | |
2757 | fd, ret, ret != -1 ? 0 : *target_errno); | |
2758 | return ret; | |
7313baad UW |
2759 | } |
2760 | ||
12e2a5fd GB |
2761 | /* See target.h. */ |
2762 | ||
7313baad | 2763 | int |
07c138c8 GB |
2764 | target_fileio_unlink (struct inferior *inf, const char *filename, |
2765 | int *target_errno) | |
7313baad | 2766 | { |
b6a8c27b | 2767 | for (target_ops *t = default_fileio_target (); t != NULL; t = t->beneath ()) |
7313baad | 2768 | { |
f6ac5f3d | 2769 | int ret = t->fileio_unlink (inf, filename, target_errno); |
7313baad | 2770 | |
f6ac5f3d PA |
2771 | if (ret == -1 && *target_errno == FILEIO_ENOSYS) |
2772 | continue; | |
2773 | ||
2774 | if (targetdebug) | |
2775 | fprintf_unfiltered (gdb_stdlog, | |
2776 | "target_fileio_unlink (%d,%s)" | |
2777 | " = %d (%d)\n", | |
2778 | inf == NULL ? 0 : inf->num, filename, | |
2779 | ret, ret != -1 ? 0 : *target_errno); | |
2780 | return ret; | |
7313baad UW |
2781 | } |
2782 | ||
2783 | *target_errno = FILEIO_ENOSYS; | |
2784 | return -1; | |
2785 | } | |
2786 | ||
12e2a5fd GB |
2787 | /* See target.h. */ |
2788 | ||
e0d3522b | 2789 | gdb::optional<std::string> |
07c138c8 GB |
2790 | target_fileio_readlink (struct inferior *inf, const char *filename, |
2791 | int *target_errno) | |
b9e7b9c3 | 2792 | { |
b6a8c27b | 2793 | for (target_ops *t = default_fileio_target (); t != NULL; t = t->beneath ()) |
b9e7b9c3 | 2794 | { |
f6ac5f3d PA |
2795 | gdb::optional<std::string> ret |
2796 | = t->fileio_readlink (inf, filename, target_errno); | |
b9e7b9c3 | 2797 | |
f6ac5f3d PA |
2798 | if (!ret.has_value () && *target_errno == FILEIO_ENOSYS) |
2799 | continue; | |
2800 | ||
2801 | if (targetdebug) | |
2802 | fprintf_unfiltered (gdb_stdlog, | |
2803 | "target_fileio_readlink (%d,%s)" | |
2804 | " = %s (%d)\n", | |
2805 | inf == NULL ? 0 : inf->num, | |
2806 | filename, ret ? ret->c_str () : "(nil)", | |
2807 | ret ? 0 : *target_errno); | |
2808 | return ret; | |
b9e7b9c3 UW |
2809 | } |
2810 | ||
2811 | *target_errno = FILEIO_ENOSYS; | |
e0d3522b | 2812 | return {}; |
b9e7b9c3 UW |
2813 | } |
2814 | ||
770623f7 TT |
2815 | /* Like scoped_fd, but specific to target fileio. */ |
2816 | ||
2817 | class scoped_target_fd | |
7313baad | 2818 | { |
770623f7 TT |
2819 | public: |
2820 | explicit scoped_target_fd (int fd) noexcept | |
2821 | : m_fd (fd) | |
2822 | { | |
2823 | } | |
7313baad | 2824 | |
770623f7 TT |
2825 | ~scoped_target_fd () |
2826 | { | |
2827 | if (m_fd >= 0) | |
2828 | { | |
2829 | int target_errno; | |
2830 | ||
2831 | target_fileio_close (m_fd, &target_errno); | |
2832 | } | |
2833 | } | |
2834 | ||
2835 | DISABLE_COPY_AND_ASSIGN (scoped_target_fd); | |
2836 | ||
2837 | int get () const noexcept | |
2838 | { | |
2839 | return m_fd; | |
2840 | } | |
2841 | ||
2842 | private: | |
2843 | int m_fd; | |
2844 | }; | |
7313baad | 2845 | |
07c138c8 GB |
2846 | /* Read target file FILENAME, in the filesystem as seen by INF. If |
2847 | INF is NULL, use the filesystem seen by the debugger (GDB or, for | |
2848 | remote targets, the remote stub). Store the result in *BUF_P and | |
2849 | return the size of the transferred data. PADDING additional bytes | |
2850 | are available in *BUF_P. This is a helper function for | |
2851 | target_fileio_read_alloc; see the declaration of that function for | |
2852 | more information. */ | |
7313baad | 2853 | |
f7af1fcd JK |
2854 | static LONGEST |
2855 | target_fileio_read_alloc_1 (struct inferior *inf, const char *filename, | |
2856 | gdb_byte **buf_p, int padding) | |
2857 | { | |
db1ff28b JK |
2858 | size_t buf_alloc, buf_pos; |
2859 | gdb_byte *buf; | |
2860 | LONGEST n; | |
db1ff28b | 2861 | int target_errno; |
f7af1fcd | 2862 | |
770623f7 | 2863 | scoped_target_fd fd (target_fileio_open (inf, filename, FILEIO_O_RDONLY, |
4111f652 | 2864 | 0700, false, &target_errno)); |
770623f7 | 2865 | if (fd.get () == -1) |
f7af1fcd JK |
2866 | return -1; |
2867 | ||
db1ff28b JK |
2868 | /* Start by reading up to 4K at a time. The target will throttle |
2869 | this number down if necessary. */ | |
2870 | buf_alloc = 4096; | |
224c3ddb | 2871 | buf = (gdb_byte *) xmalloc (buf_alloc); |
db1ff28b JK |
2872 | buf_pos = 0; |
2873 | while (1) | |
2874 | { | |
770623f7 | 2875 | n = target_fileio_pread (fd.get (), &buf[buf_pos], |
db1ff28b JK |
2876 | buf_alloc - buf_pos - padding, buf_pos, |
2877 | &target_errno); | |
2878 | if (n < 0) | |
2879 | { | |
2880 | /* An error occurred. */ | |
db1ff28b JK |
2881 | xfree (buf); |
2882 | return -1; | |
2883 | } | |
2884 | else if (n == 0) | |
2885 | { | |
2886 | /* Read all there was. */ | |
db1ff28b JK |
2887 | if (buf_pos == 0) |
2888 | xfree (buf); | |
2889 | else | |
2890 | *buf_p = buf; | |
2891 | return buf_pos; | |
2892 | } | |
2893 | ||
2894 | buf_pos += n; | |
2895 | ||
2896 | /* If the buffer is filling up, expand it. */ | |
2897 | if (buf_alloc < buf_pos * 2) | |
2898 | { | |
2899 | buf_alloc *= 2; | |
224c3ddb | 2900 | buf = (gdb_byte *) xrealloc (buf, buf_alloc); |
db1ff28b JK |
2901 | } |
2902 | ||
2903 | QUIT; | |
2904 | } | |
f7af1fcd JK |
2905 | } |
2906 | ||
12e2a5fd | 2907 | /* See target.h. */ |
7313baad UW |
2908 | |
2909 | LONGEST | |
07c138c8 GB |
2910 | target_fileio_read_alloc (struct inferior *inf, const char *filename, |
2911 | gdb_byte **buf_p) | |
7313baad | 2912 | { |
07c138c8 | 2913 | return target_fileio_read_alloc_1 (inf, filename, buf_p, 0); |
7313baad UW |
2914 | } |
2915 | ||
db1ff28b | 2916 | /* See target.h. */ |
f7af1fcd | 2917 | |
87028b87 | 2918 | gdb::unique_xmalloc_ptr<char> |
f7af1fcd JK |
2919 | target_fileio_read_stralloc (struct inferior *inf, const char *filename) |
2920 | { | |
db1ff28b JK |
2921 | gdb_byte *buffer; |
2922 | char *bufstr; | |
2923 | LONGEST i, transferred; | |
2924 | ||
2925 | transferred = target_fileio_read_alloc_1 (inf, filename, &buffer, 1); | |
2926 | bufstr = (char *) buffer; | |
2927 | ||
2928 | if (transferred < 0) | |
87028b87 | 2929 | return gdb::unique_xmalloc_ptr<char> (nullptr); |
db1ff28b JK |
2930 | |
2931 | if (transferred == 0) | |
b02f78f9 | 2932 | return make_unique_xstrdup (""); |
db1ff28b JK |
2933 | |
2934 | bufstr[transferred] = 0; | |
2935 | ||
2936 | /* Check for embedded NUL bytes; but allow trailing NULs. */ | |
2937 | for (i = strlen (bufstr); i < transferred; i++) | |
2938 | if (bufstr[i] != 0) | |
2939 | { | |
2940 | warning (_("target file %s " | |
2941 | "contained unexpected null characters"), | |
2942 | filename); | |
2943 | break; | |
2944 | } | |
2945 | ||
87028b87 | 2946 | return gdb::unique_xmalloc_ptr<char> (bufstr); |
f7af1fcd | 2947 | } |
7313baad | 2948 | |
db1ff28b | 2949 | |
e0d24f8d | 2950 | static int |
31568a15 TT |
2951 | default_region_ok_for_hw_watchpoint (struct target_ops *self, |
2952 | CORE_ADDR addr, int len) | |
e0d24f8d | 2953 | { |
f5656ead | 2954 | return (len <= gdbarch_ptr_bit (target_gdbarch ()) / TARGET_CHAR_BIT); |
ccaa32c7 GS |
2955 | } |
2956 | ||
5009afc5 AS |
2957 | static int |
2958 | default_watchpoint_addr_within_range (struct target_ops *target, | |
2959 | CORE_ADDR addr, | |
2960 | CORE_ADDR start, int length) | |
2961 | { | |
2962 | return addr >= start && addr < start + length; | |
2963 | } | |
2964 | ||
8b06beed TT |
2965 | /* See target.h. */ |
2966 | ||
a1740ee1 PA |
2967 | target_ops * |
2968 | target_stack::find_beneath (const target_ops *t) const | |
8b06beed | 2969 | { |
a1740ee1 | 2970 | /* Look for a non-empty slot at stratum levels beneath T's. */ |
66b4deae | 2971 | for (int stratum = t->stratum () - 1; stratum >= 0; --stratum) |
a1740ee1 PA |
2972 | if (m_stack[stratum] != NULL) |
2973 | return m_stack[stratum]; | |
8b06beed TT |
2974 | |
2975 | return NULL; | |
2976 | } | |
2977 | ||
a1740ee1 PA |
2978 | /* See target.h. */ |
2979 | ||
2980 | struct target_ops * | |
2981 | find_target_at (enum strata stratum) | |
2982 | { | |
5b6d1e4f | 2983 | return current_inferior ()->target_at (stratum); |
a1740ee1 PA |
2984 | } |
2985 | ||
c906108c | 2986 | \f |
0f48b757 PA |
2987 | |
2988 | /* See target.h */ | |
2989 | ||
2990 | void | |
2991 | target_announce_detach (int from_tty) | |
2992 | { | |
2993 | pid_t pid; | |
a121b7c1 | 2994 | const char *exec_file; |
0f48b757 PA |
2995 | |
2996 | if (!from_tty) | |
2997 | return; | |
2998 | ||
2999 | exec_file = get_exec_file (0); | |
3000 | if (exec_file == NULL) | |
3001 | exec_file = ""; | |
3002 | ||
e99b03dc | 3003 | pid = inferior_ptid.pid (); |
0f48b757 | 3004 | printf_unfiltered (_("Detaching from program: %s, %s\n"), exec_file, |
a068643d | 3005 | target_pid_to_str (ptid_t (pid)).c_str ()); |
0f48b757 PA |
3006 | } |
3007 | ||
c906108c SS |
3008 | /* The inferior process has died. Long live the inferior! */ |
3009 | ||
3010 | void | |
fba45db2 | 3011 | generic_mourn_inferior (void) |
c906108c | 3012 | { |
00431a78 | 3013 | inferior *inf = current_inferior (); |
c906108c | 3014 | |
a0776b13 | 3015 | switch_to_no_thread (); |
7f9f62ba | 3016 | |
f59f708a PA |
3017 | /* Mark breakpoints uninserted in case something tries to delete a |
3018 | breakpoint while we delete the inferior's threads (which would | |
3019 | fail, since the inferior is long gone). */ | |
3020 | mark_breakpoints_out (); | |
3021 | ||
00431a78 PA |
3022 | if (inf->pid != 0) |
3023 | exit_inferior (inf); | |
7f9f62ba | 3024 | |
f59f708a PA |
3025 | /* Note this wipes step-resume breakpoints, so needs to be done |
3026 | after exit_inferior, which ends up referencing the step-resume | |
3027 | breakpoints through clear_thread_inferior_resources. */ | |
c906108c | 3028 | breakpoint_init_inferior (inf_exited); |
f59f708a | 3029 | |
c906108c SS |
3030 | registers_changed (); |
3031 | ||
c906108c SS |
3032 | reopen_exec_file (); |
3033 | reinit_frame_cache (); | |
3034 | ||
9a4105ab AC |
3035 | if (deprecated_detach_hook) |
3036 | deprecated_detach_hook (); | |
c906108c SS |
3037 | } |
3038 | \f | |
fd0a2a6f MK |
3039 | /* Convert a normal process ID to a string. Returns the string in a |
3040 | static buffer. */ | |
c906108c | 3041 | |
a068643d | 3042 | std::string |
39f77062 | 3043 | normal_pid_to_str (ptid_t ptid) |
c906108c | 3044 | { |
a068643d | 3045 | return string_printf ("process %d", ptid.pid ()); |
c906108c SS |
3046 | } |
3047 | ||
a068643d | 3048 | static std::string |
770234d3 | 3049 | default_pid_to_str (struct target_ops *ops, ptid_t ptid) |
117de6a9 PA |
3050 | { |
3051 | return normal_pid_to_str (ptid); | |
3052 | } | |
3053 | ||
9b4eba8e HZ |
3054 | /* Error-catcher for target_find_memory_regions. */ |
3055 | static int | |
2e73927c TT |
3056 | dummy_find_memory_regions (struct target_ops *self, |
3057 | find_memory_region_ftype ignore1, void *ignore2) | |
be4d1333 | 3058 | { |
9b4eba8e | 3059 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3060 | return 0; |
3061 | } | |
3062 | ||
9b4eba8e | 3063 | /* Error-catcher for target_make_corefile_notes. */ |
24f5300a | 3064 | static gdb::unique_xmalloc_ptr<char> |
fc6691b2 TT |
3065 | dummy_make_corefile_notes (struct target_ops *self, |
3066 | bfd *ignore1, int *ignore2) | |
be4d1333 | 3067 | { |
9b4eba8e | 3068 | error (_("Command not implemented for this target.")); |
be4d1333 MS |
3069 | return NULL; |
3070 | } | |
3071 | ||
f6ac5f3d PA |
3072 | #include "target-delegates.c" |
3073 | ||
06b5b831 TT |
3074 | /* The initial current target, so that there is always a semi-valid |
3075 | current target. */ | |
3076 | ||
3077 | static dummy_target the_dummy_target; | |
c906108c | 3078 | |
5b6d1e4f PA |
3079 | /* See target.h. */ |
3080 | ||
3081 | target_ops * | |
3082 | get_dummy_target () | |
3083 | { | |
3084 | return &the_dummy_target; | |
3085 | } | |
3086 | ||
d9f719f1 PA |
3087 | static const target_info dummy_target_info = { |
3088 | "None", | |
3089 | N_("None"), | |
3090 | "" | |
3091 | }; | |
3092 | ||
66b4deae PA |
3093 | strata |
3094 | dummy_target::stratum () const | |
f6ac5f3d | 3095 | { |
66b4deae | 3096 | return dummy_stratum; |
f6ac5f3d PA |
3097 | } |
3098 | ||
66b4deae PA |
3099 | strata |
3100 | debug_target::stratum () const | |
f6ac5f3d | 3101 | { |
66b4deae | 3102 | return debug_stratum; |
f6ac5f3d PA |
3103 | } |
3104 | ||
d9f719f1 PA |
3105 | const target_info & |
3106 | dummy_target::info () const | |
f6ac5f3d | 3107 | { |
d9f719f1 | 3108 | return dummy_target_info; |
f6ac5f3d PA |
3109 | } |
3110 | ||
d9f719f1 PA |
3111 | const target_info & |
3112 | debug_target::info () const | |
f6ac5f3d | 3113 | { |
b6a8c27b | 3114 | return beneath ()->info (); |
f6ac5f3d PA |
3115 | } |
3116 | ||
c906108c | 3117 | \f |
c906108c | 3118 | |
f1c07ab0 | 3119 | void |
460014f5 | 3120 | target_close (struct target_ops *targ) |
f1c07ab0 | 3121 | { |
7fdc1521 TT |
3122 | gdb_assert (!target_is_pushed (targ)); |
3123 | ||
20db9c52 PA |
3124 | fileio_handles_invalidate_target (targ); |
3125 | ||
f6ac5f3d | 3126 | targ->close (); |
947b8855 PA |
3127 | |
3128 | if (targetdebug) | |
460014f5 | 3129 | fprintf_unfiltered (gdb_stdlog, "target_close ()\n"); |
f1c07ab0 AC |
3130 | } |
3131 | ||
28439f5e PA |
3132 | int |
3133 | target_thread_alive (ptid_t ptid) | |
c906108c | 3134 | { |
8b88a78e | 3135 | return current_top_target ()->thread_alive (ptid); |
28439f5e PA |
3136 | } |
3137 | ||
3138 | void | |
e8032dde | 3139 | target_update_thread_list (void) |
28439f5e | 3140 | { |
8b88a78e | 3141 | current_top_target ()->update_thread_list (); |
c906108c SS |
3142 | } |
3143 | ||
d914c394 SS |
3144 | void |
3145 | target_stop (ptid_t ptid) | |
3146 | { | |
3147 | if (!may_stop) | |
3148 | { | |
3149 | warning (_("May not interrupt or stop the target, ignoring attempt")); | |
3150 | return; | |
3151 | } | |
3152 | ||
8b88a78e | 3153 | current_top_target ()->stop (ptid); |
d914c394 SS |
3154 | } |
3155 | ||
bfedc46a | 3156 | void |
e671cd59 | 3157 | target_interrupt () |
bfedc46a PA |
3158 | { |
3159 | if (!may_stop) | |
3160 | { | |
3161 | warning (_("May not interrupt or stop the target, ignoring attempt")); | |
3162 | return; | |
3163 | } | |
3164 | ||
8b88a78e | 3165 | current_top_target ()->interrupt (); |
bfedc46a PA |
3166 | } |
3167 | ||
abc56d60 PA |
3168 | /* See target.h. */ |
3169 | ||
93692b58 PA |
3170 | void |
3171 | target_pass_ctrlc (void) | |
3172 | { | |
5b6d1e4f PA |
3173 | /* Pass the Ctrl-C to the first target that has a thread |
3174 | running. */ | |
3175 | for (inferior *inf : all_inferiors ()) | |
3176 | { | |
3177 | target_ops *proc_target = inf->process_target (); | |
3178 | if (proc_target == NULL) | |
3179 | continue; | |
3180 | ||
43667cc6 | 3181 | for (thread_info *thr : inf->non_exited_threads ()) |
5b6d1e4f PA |
3182 | { |
3183 | /* A thread can be THREAD_STOPPED and executing, while | |
3184 | running an infcall. */ | |
3185 | if (thr->state == THREAD_RUNNING || thr->executing) | |
3186 | { | |
3187 | /* We can get here quite deep in target layers. Avoid | |
3188 | switching thread context or anything that would | |
3189 | communicate with the target (e.g., to fetch | |
3190 | registers), or flushing e.g., the frame cache. We | |
3191 | just switch inferior in order to be able to call | |
3192 | through the target_stack. */ | |
3193 | scoped_restore_current_inferior restore_inferior; | |
3194 | set_current_inferior (inf); | |
3195 | current_top_target ()->pass_ctrlc (); | |
3196 | return; | |
3197 | } | |
3198 | } | |
3199 | } | |
93692b58 PA |
3200 | } |
3201 | ||
3202 | /* See target.h. */ | |
3203 | ||
3204 | void | |
3205 | default_target_pass_ctrlc (struct target_ops *ops) | |
3206 | { | |
e671cd59 | 3207 | target_interrupt (); |
93692b58 PA |
3208 | } |
3209 | ||
f8c1d06b GB |
3210 | /* See target/target.h. */ |
3211 | ||
3212 | void | |
03f4463b | 3213 | target_stop_and_wait (ptid_t ptid) |
f8c1d06b GB |
3214 | { |
3215 | struct target_waitstatus status; | |
491144b5 | 3216 | bool was_non_stop = non_stop; |
f8c1d06b | 3217 | |
491144b5 | 3218 | non_stop = true; |
f8c1d06b GB |
3219 | target_stop (ptid); |
3220 | ||
3221 | memset (&status, 0, sizeof (status)); | |
3222 | target_wait (ptid, &status, 0); | |
3223 | ||
3224 | non_stop = was_non_stop; | |
3225 | } | |
3226 | ||
3227 | /* See target/target.h. */ | |
3228 | ||
3229 | void | |
03f4463b | 3230 | target_continue_no_signal (ptid_t ptid) |
f8c1d06b GB |
3231 | { |
3232 | target_resume (ptid, 0, GDB_SIGNAL_0); | |
3233 | } | |
3234 | ||
049a8570 SDJ |
3235 | /* See target/target.h. */ |
3236 | ||
3237 | void | |
3238 | target_continue (ptid_t ptid, enum gdb_signal signal) | |
3239 | { | |
3240 | target_resume (ptid, 0, signal); | |
3241 | } | |
3242 | ||
fdbac7d8 | 3243 | /* Concatenate ELEM to LIST, a comma-separated list. */ |
09826ec5 | 3244 | |
09ce46f2 SM |
3245 | static void |
3246 | str_comma_list_concat_elem (std::string *list, const char *elem) | |
09826ec5 | 3247 | { |
09ce46f2 SM |
3248 | if (!list->empty ()) |
3249 | list->append (", "); | |
3250 | ||
3251 | list->append (elem); | |
09826ec5 PA |
3252 | } |
3253 | ||
3254 | /* Helper for target_options_to_string. If OPT is present in | |
3255 | TARGET_OPTIONS, append the OPT_STR (string version of OPT) in RET. | |
09ce46f2 | 3256 | OPT is removed from TARGET_OPTIONS. */ |
09826ec5 | 3257 | |
09ce46f2 | 3258 | static void |
b60cea74 TT |
3259 | do_option (target_wait_flags *target_options, std::string *ret, |
3260 | target_wait_flag opt, const char *opt_str) | |
09826ec5 PA |
3261 | { |
3262 | if ((*target_options & opt) != 0) | |
3263 | { | |
09ce46f2 | 3264 | str_comma_list_concat_elem (ret, opt_str); |
09826ec5 PA |
3265 | *target_options &= ~opt; |
3266 | } | |
09826ec5 PA |
3267 | } |
3268 | ||
fdbac7d8 SM |
3269 | /* See target.h. */ |
3270 | ||
09ce46f2 | 3271 | std::string |
b60cea74 | 3272 | target_options_to_string (target_wait_flags target_options) |
09826ec5 | 3273 | { |
09ce46f2 | 3274 | std::string ret; |
09826ec5 PA |
3275 | |
3276 | #define DO_TARG_OPTION(OPT) \ | |
09ce46f2 | 3277 | do_option (&target_options, &ret, OPT, #OPT) |
09826ec5 PA |
3278 | |
3279 | DO_TARG_OPTION (TARGET_WNOHANG); | |
3280 | ||
3281 | if (target_options != 0) | |
09ce46f2 | 3282 | str_comma_list_concat_elem (&ret, "unknown???"); |
09826ec5 | 3283 | |
09826ec5 PA |
3284 | return ret; |
3285 | } | |
3286 | ||
28439f5e PA |
3287 | void |
3288 | target_fetch_registers (struct regcache *regcache, int regno) | |
c906108c | 3289 | { |
8b88a78e | 3290 | current_top_target ()->fetch_registers (regcache, regno); |
ad5989bd | 3291 | if (targetdebug) |
ef79d9a3 | 3292 | regcache->debug_print_register ("target_fetch_registers", regno); |
c906108c SS |
3293 | } |
3294 | ||
28439f5e PA |
3295 | void |
3296 | target_store_registers (struct regcache *regcache, int regno) | |
c906108c | 3297 | { |
d914c394 SS |
3298 | if (!may_write_registers) |
3299 | error (_("Writing to registers is not allowed (regno %d)"), regno); | |
3300 | ||
8b88a78e | 3301 | current_top_target ()->store_registers (regcache, regno); |
6b84065d | 3302 | if (targetdebug) |
28439f5e | 3303 | { |
ef79d9a3 | 3304 | regcache->debug_print_register ("target_store_registers", regno); |
28439f5e | 3305 | } |
c906108c SS |
3306 | } |
3307 | ||
dc146f7c VP |
3308 | int |
3309 | target_core_of_thread (ptid_t ptid) | |
3310 | { | |
8b88a78e | 3311 | return current_top_target ()->core_of_thread (ptid); |
dc146f7c VP |
3312 | } |
3313 | ||
936d2992 PA |
3314 | int |
3315 | simple_verify_memory (struct target_ops *ops, | |
3316 | const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
3317 | { | |
3318 | LONGEST total_xfered = 0; | |
3319 | ||
3320 | while (total_xfered < size) | |
3321 | { | |
3322 | ULONGEST xfered_len; | |
3323 | enum target_xfer_status status; | |
3324 | gdb_byte buf[1024]; | |
768adc05 | 3325 | ULONGEST howmuch = std::min<ULONGEST> (sizeof (buf), size - total_xfered); |
936d2992 PA |
3326 | |
3327 | status = target_xfer_partial (ops, TARGET_OBJECT_MEMORY, NULL, | |
3328 | buf, NULL, lma + total_xfered, howmuch, | |
3329 | &xfered_len); | |
3330 | if (status == TARGET_XFER_OK | |
3331 | && memcmp (data + total_xfered, buf, xfered_len) == 0) | |
3332 | { | |
3333 | total_xfered += xfered_len; | |
3334 | QUIT; | |
3335 | } | |
3336 | else | |
3337 | return 0; | |
3338 | } | |
3339 | return 1; | |
3340 | } | |
3341 | ||
3342 | /* Default implementation of memory verification. */ | |
3343 | ||
3344 | static int | |
3345 | default_verify_memory (struct target_ops *self, | |
3346 | const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size) | |
3347 | { | |
3348 | /* Start over from the top of the target stack. */ | |
8b88a78e | 3349 | return simple_verify_memory (current_top_target (), |
936d2992 PA |
3350 | data, memaddr, size); |
3351 | } | |
3352 | ||
4a5e7a5b PA |
3353 | int |
3354 | target_verify_memory (const gdb_byte *data, CORE_ADDR memaddr, ULONGEST size) | |
3355 | { | |
8b88a78e | 3356 | return current_top_target ()->verify_memory (data, memaddr, size); |
4a5e7a5b PA |
3357 | } |
3358 | ||
9c06b0b4 TJB |
3359 | /* The documentation for this function is in its prototype declaration in |
3360 | target.h. */ | |
3361 | ||
3362 | int | |
f4b0a671 SM |
3363 | target_insert_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, |
3364 | enum target_hw_bp_type rw) | |
9c06b0b4 | 3365 | { |
8b88a78e | 3366 | return current_top_target ()->insert_mask_watchpoint (addr, mask, rw); |
9c06b0b4 TJB |
3367 | } |
3368 | ||
3369 | /* The documentation for this function is in its prototype declaration in | |
3370 | target.h. */ | |
3371 | ||
3372 | int | |
f4b0a671 SM |
3373 | target_remove_mask_watchpoint (CORE_ADDR addr, CORE_ADDR mask, |
3374 | enum target_hw_bp_type rw) | |
9c06b0b4 | 3375 | { |
8b88a78e | 3376 | return current_top_target ()->remove_mask_watchpoint (addr, mask, rw); |
9c06b0b4 TJB |
3377 | } |
3378 | ||
3379 | /* The documentation for this function is in its prototype declaration | |
3380 | in target.h. */ | |
3381 | ||
3382 | int | |
3383 | target_masked_watch_num_registers (CORE_ADDR addr, CORE_ADDR mask) | |
3384 | { | |
8b88a78e | 3385 | return current_top_target ()->masked_watch_num_registers (addr, mask); |
9c06b0b4 TJB |
3386 | } |
3387 | ||
f1310107 TJB |
3388 | /* The documentation for this function is in its prototype declaration |
3389 | in target.h. */ | |
3390 | ||
3391 | int | |
3392 | target_ranged_break_num_registers (void) | |
3393 | { | |
8b88a78e | 3394 | return current_top_target ()->ranged_break_num_registers (); |
f1310107 TJB |
3395 | } |
3396 | ||
02d27625 MM |
3397 | /* See target.h. */ |
3398 | ||
02d27625 | 3399 | struct btrace_target_info * |
f4abbc16 | 3400 | target_enable_btrace (ptid_t ptid, const struct btrace_config *conf) |
02d27625 | 3401 | { |
8b88a78e | 3402 | return current_top_target ()->enable_btrace (ptid, conf); |
02d27625 MM |
3403 | } |
3404 | ||
3405 | /* See target.h. */ | |
3406 | ||
3407 | void | |
3408 | target_disable_btrace (struct btrace_target_info *btinfo) | |
3409 | { | |
8b88a78e | 3410 | current_top_target ()->disable_btrace (btinfo); |
02d27625 MM |
3411 | } |
3412 | ||
3413 | /* See target.h. */ | |
3414 | ||
3415 | void | |
3416 | target_teardown_btrace (struct btrace_target_info *btinfo) | |
3417 | { | |
8b88a78e | 3418 | current_top_target ()->teardown_btrace (btinfo); |
02d27625 MM |
3419 | } |
3420 | ||
3421 | /* See target.h. */ | |
3422 | ||
969c39fb | 3423 | enum btrace_error |
734b0e4b | 3424 | target_read_btrace (struct btrace_data *btrace, |
969c39fb | 3425 | struct btrace_target_info *btinfo, |
02d27625 MM |
3426 | enum btrace_read_type type) |
3427 | { | |
8b88a78e | 3428 | return current_top_target ()->read_btrace (btrace, btinfo, type); |
02d27625 MM |
3429 | } |
3430 | ||
d02ed0bb MM |
3431 | /* See target.h. */ |
3432 | ||
f4abbc16 MM |
3433 | const struct btrace_config * |
3434 | target_btrace_conf (const struct btrace_target_info *btinfo) | |
3435 | { | |
8b88a78e | 3436 | return current_top_target ()->btrace_conf (btinfo); |
f4abbc16 MM |
3437 | } |
3438 | ||
3439 | /* See target.h. */ | |
3440 | ||
7c1687a9 MM |
3441 | void |
3442 | target_stop_recording (void) | |
3443 | { | |
8b88a78e | 3444 | current_top_target ()->stop_recording (); |
7c1687a9 MM |
3445 | } |
3446 | ||
3447 | /* See target.h. */ | |
3448 | ||
d02ed0bb | 3449 | void |
85e1311a | 3450 | target_save_record (const char *filename) |
d02ed0bb | 3451 | { |
8b88a78e | 3452 | current_top_target ()->save_record (filename); |
d02ed0bb MM |
3453 | } |
3454 | ||
3455 | /* See target.h. */ | |
3456 | ||
3457 | int | |
f6ac5f3d | 3458 | target_supports_delete_record () |
d02ed0bb | 3459 | { |
8b88a78e | 3460 | return current_top_target ()->supports_delete_record (); |
d02ed0bb MM |
3461 | } |
3462 | ||
3463 | /* See target.h. */ | |
3464 | ||
3465 | void | |
3466 | target_delete_record (void) | |
3467 | { | |
8b88a78e | 3468 | current_top_target ()->delete_record (); |
d02ed0bb MM |
3469 | } |
3470 | ||
3471 | /* See target.h. */ | |
3472 | ||
b158a20f TW |
3473 | enum record_method |
3474 | target_record_method (ptid_t ptid) | |
3475 | { | |
8b88a78e | 3476 | return current_top_target ()->record_method (ptid); |
b158a20f TW |
3477 | } |
3478 | ||
3479 | /* See target.h. */ | |
3480 | ||
d02ed0bb | 3481 | int |
a52eab48 | 3482 | target_record_is_replaying (ptid_t ptid) |
d02ed0bb | 3483 | { |
8b88a78e | 3484 | return current_top_target ()->record_is_replaying (ptid); |
d02ed0bb MM |
3485 | } |
3486 | ||
3487 | /* See target.h. */ | |
3488 | ||
7ff27e9b MM |
3489 | int |
3490 | target_record_will_replay (ptid_t ptid, int dir) | |
3491 | { | |
8b88a78e | 3492 | return current_top_target ()->record_will_replay (ptid, dir); |
7ff27e9b MM |
3493 | } |
3494 | ||
3495 | /* See target.h. */ | |
3496 | ||
797094dd MM |
3497 | void |
3498 | target_record_stop_replaying (void) | |
3499 | { | |
8b88a78e | 3500 | current_top_target ()->record_stop_replaying (); |
797094dd MM |
3501 | } |
3502 | ||
3503 | /* See target.h. */ | |
3504 | ||
d02ed0bb MM |
3505 | void |
3506 | target_goto_record_begin (void) | |
3507 | { | |
8b88a78e | 3508 | current_top_target ()->goto_record_begin (); |
d02ed0bb MM |
3509 | } |
3510 | ||
3511 | /* See target.h. */ | |
3512 | ||
3513 | void | |
3514 | target_goto_record_end (void) | |
3515 | { | |
8b88a78e | 3516 | current_top_target ()->goto_record_end (); |
d02ed0bb MM |
3517 | } |
3518 | ||
3519 | /* See target.h. */ | |
3520 | ||
3521 | void | |
3522 | target_goto_record (ULONGEST insn) | |
3523 | { | |
8b88a78e | 3524 | current_top_target ()->goto_record (insn); |
d02ed0bb MM |
3525 | } |
3526 | ||
67c86d06 MM |
3527 | /* See target.h. */ |
3528 | ||
3529 | void | |
9a24775b | 3530 | target_insn_history (int size, gdb_disassembly_flags flags) |
67c86d06 | 3531 | { |
8b88a78e | 3532 | current_top_target ()->insn_history (size, flags); |
67c86d06 MM |
3533 | } |
3534 | ||
3535 | /* See target.h. */ | |
3536 | ||
3537 | void | |
9a24775b PA |
3538 | target_insn_history_from (ULONGEST from, int size, |
3539 | gdb_disassembly_flags flags) | |
67c86d06 | 3540 | { |
8b88a78e | 3541 | current_top_target ()->insn_history_from (from, size, flags); |
67c86d06 MM |
3542 | } |
3543 | ||
3544 | /* See target.h. */ | |
3545 | ||
3546 | void | |
9a24775b PA |
3547 | target_insn_history_range (ULONGEST begin, ULONGEST end, |
3548 | gdb_disassembly_flags flags) | |
67c86d06 | 3549 | { |
8b88a78e | 3550 | current_top_target ()->insn_history_range (begin, end, flags); |
67c86d06 MM |
3551 | } |
3552 | ||
15984c13 MM |
3553 | /* See target.h. */ |
3554 | ||
3555 | void | |
0cb7c7b0 | 3556 | target_call_history (int size, record_print_flags flags) |
15984c13 | 3557 | { |
8b88a78e | 3558 | current_top_target ()->call_history (size, flags); |
15984c13 MM |
3559 | } |
3560 | ||
3561 | /* See target.h. */ | |
3562 | ||
3563 | void | |
0cb7c7b0 | 3564 | target_call_history_from (ULONGEST begin, int size, record_print_flags flags) |
15984c13 | 3565 | { |
8b88a78e | 3566 | current_top_target ()->call_history_from (begin, size, flags); |
15984c13 MM |
3567 | } |
3568 | ||
3569 | /* See target.h. */ | |
3570 | ||
3571 | void | |
0cb7c7b0 | 3572 | target_call_history_range (ULONGEST begin, ULONGEST end, record_print_flags flags) |
15984c13 | 3573 | { |
8b88a78e | 3574 | current_top_target ()->call_history_range (begin, end, flags); |
15984c13 MM |
3575 | } |
3576 | ||
ea001bdc MM |
3577 | /* See target.h. */ |
3578 | ||
3579 | const struct frame_unwind * | |
3580 | target_get_unwinder (void) | |
3581 | { | |
8b88a78e | 3582 | return current_top_target ()->get_unwinder (); |
ea001bdc MM |
3583 | } |
3584 | ||
3585 | /* See target.h. */ | |
3586 | ||
3587 | const struct frame_unwind * | |
3588 | target_get_tailcall_unwinder (void) | |
3589 | { | |
8b88a78e | 3590 | return current_top_target ()->get_tailcall_unwinder (); |
ea001bdc MM |
3591 | } |
3592 | ||
5fff78c4 MM |
3593 | /* See target.h. */ |
3594 | ||
3595 | void | |
3596 | target_prepare_to_generate_core (void) | |
3597 | { | |
8b88a78e | 3598 | current_top_target ()->prepare_to_generate_core (); |
5fff78c4 MM |
3599 | } |
3600 | ||
3601 | /* See target.h. */ | |
3602 | ||
3603 | void | |
3604 | target_done_generating_core (void) | |
3605 | { | |
8b88a78e | 3606 | current_top_target ()->done_generating_core (); |
5fff78c4 MM |
3607 | } |
3608 | ||
c906108c | 3609 | \f |
c5aa993b JM |
3610 | |
3611 | static char targ_desc[] = | |
3e43a32a MS |
3612 | "Names of targets and files being debugged.\nShows the entire \ |
3613 | stack of targets currently in use (including the exec-file,\n\ | |
c906108c SS |
3614 | core-file, and process, if any), as well as the symbol file name."; |
3615 | ||
a53f3625 | 3616 | static void |
a30bf1f1 TT |
3617 | default_rcmd (struct target_ops *self, const char *command, |
3618 | struct ui_file *output) | |
a53f3625 TT |
3619 | { |
3620 | error (_("\"monitor\" command not supported by this target.")); | |
3621 | } | |
3622 | ||
96baa820 | 3623 | static void |
0b39b52e | 3624 | do_monitor_command (const char *cmd, int from_tty) |
96baa820 | 3625 | { |
96baa820 JM |
3626 | target_rcmd (cmd, gdb_stdtarg); |
3627 | } | |
3628 | ||
78cbbba8 LM |
3629 | /* Erases all the memory regions marked as flash. CMD and FROM_TTY are |
3630 | ignored. */ | |
3631 | ||
3632 | void | |
0b39b52e | 3633 | flash_erase_command (const char *cmd, int from_tty) |
78cbbba8 LM |
3634 | { |
3635 | /* Used to communicate termination of flash operations to the target. */ | |
3636 | bool found_flash_region = false; | |
78cbbba8 LM |
3637 | struct gdbarch *gdbarch = target_gdbarch (); |
3638 | ||
a664f67e | 3639 | std::vector<mem_region> mem_regions = target_memory_map (); |
78cbbba8 LM |
3640 | |
3641 | /* Iterate over all memory regions. */ | |
a664f67e | 3642 | for (const mem_region &m : mem_regions) |
78cbbba8 | 3643 | { |
78cbbba8 | 3644 | /* Is this a flash memory region? */ |
a664f67e | 3645 | if (m.attrib.mode == MEM_FLASH) |
dda83cd7 SM |
3646 | { |
3647 | found_flash_region = true; | |
3648 | target_flash_erase (m.lo, m.hi - m.lo); | |
78cbbba8 | 3649 | |
76f9c9cf | 3650 | ui_out_emit_tuple tuple_emitter (current_uiout, "erased-regions"); |
78cbbba8 | 3651 | |
dda83cd7 SM |
3652 | current_uiout->message (_("Erasing flash memory region at address ")); |
3653 | current_uiout->field_core_addr ("address", gdbarch, m.lo); | |
3654 | current_uiout->message (", size = "); | |
3655 | current_uiout->field_string ("size", hex_string (m.hi - m.lo)); | |
3656 | current_uiout->message ("\n"); | |
3657 | } | |
78cbbba8 LM |
3658 | } |
3659 | ||
3660 | /* Did we do any flash operations? If so, we need to finalize them. */ | |
3661 | if (found_flash_region) | |
3662 | target_flash_done (); | |
3663 | else | |
3664 | current_uiout->message (_("No flash memory regions found.\n")); | |
3665 | } | |
3666 | ||
87680a14 JB |
3667 | /* Print the name of each layers of our target stack. */ |
3668 | ||
3669 | static void | |
d3cb6b99 | 3670 | maintenance_print_target_stack (const char *cmd, int from_tty) |
87680a14 | 3671 | { |
87680a14 JB |
3672 | printf_filtered (_("The current target stack is:\n")); |
3673 | ||
b6a8c27b | 3674 | for (target_ops *t = current_top_target (); t != NULL; t = t->beneath ()) |
87680a14 | 3675 | { |
66b4deae | 3676 | if (t->stratum () == debug_stratum) |
f6ac5f3d PA |
3677 | continue; |
3678 | printf_filtered (" - %s (%s)\n", t->shortname (), t->longname ()); | |
87680a14 JB |
3679 | } |
3680 | } | |
3681 | ||
372316f1 PA |
3682 | /* See target.h. */ |
3683 | ||
3684 | void | |
3685 | target_async (int enable) | |
3686 | { | |
3687 | infrun_async (enable); | |
8b88a78e | 3688 | current_top_target ()->async (enable); |
372316f1 PA |
3689 | } |
3690 | ||
65706a29 PA |
3691 | /* See target.h. */ |
3692 | ||
3693 | void | |
3694 | target_thread_events (int enable) | |
3695 | { | |
8b88a78e | 3696 | current_top_target ()->thread_events (enable); |
65706a29 PA |
3697 | } |
3698 | ||
329ea579 PA |
3699 | /* Controls if targets can report that they can/are async. This is |
3700 | just for maintainers to use when debugging gdb. */ | |
491144b5 | 3701 | bool target_async_permitted = true; |
c6ebd6cf VP |
3702 | |
3703 | /* The set command writes to this variable. If the inferior is | |
b5419e49 | 3704 | executing, target_async_permitted is *not* updated. */ |
491144b5 | 3705 | static bool target_async_permitted_1 = true; |
c6ebd6cf VP |
3706 | |
3707 | static void | |
eb4c3f4a | 3708 | maint_set_target_async_command (const char *args, int from_tty, |
329ea579 | 3709 | struct cmd_list_element *c) |
c6ebd6cf | 3710 | { |
c35b1492 | 3711 | if (have_live_inferiors ()) |
c6ebd6cf VP |
3712 | { |
3713 | target_async_permitted_1 = target_async_permitted; | |
3714 | error (_("Cannot change this setting while the inferior is running.")); | |
3715 | } | |
3716 | ||
3717 | target_async_permitted = target_async_permitted_1; | |
3718 | } | |
3719 | ||
3720 | static void | |
329ea579 PA |
3721 | maint_show_target_async_command (struct ui_file *file, int from_tty, |
3722 | struct cmd_list_element *c, | |
3723 | const char *value) | |
c6ebd6cf | 3724 | { |
3e43a32a MS |
3725 | fprintf_filtered (file, |
3726 | _("Controlling the inferior in " | |
3727 | "asynchronous mode is %s.\n"), value); | |
c6ebd6cf VP |
3728 | } |
3729 | ||
fbea99ea PA |
3730 | /* Return true if the target operates in non-stop mode even with "set |
3731 | non-stop off". */ | |
3732 | ||
3733 | static int | |
3734 | target_always_non_stop_p (void) | |
3735 | { | |
8b88a78e | 3736 | return current_top_target ()->always_non_stop_p (); |
fbea99ea PA |
3737 | } |
3738 | ||
3739 | /* See target.h. */ | |
3740 | ||
3741 | int | |
3742 | target_is_non_stop_p (void) | |
3743 | { | |
3744 | return (non_stop | |
3745 | || target_non_stop_enabled == AUTO_BOOLEAN_TRUE | |
3746 | || (target_non_stop_enabled == AUTO_BOOLEAN_AUTO | |
3747 | && target_always_non_stop_p ())); | |
3748 | } | |
3749 | ||
a0714d30 TBA |
3750 | /* See target.h. */ |
3751 | ||
3752 | bool | |
3753 | exists_non_stop_target () | |
3754 | { | |
3755 | if (target_is_non_stop_p ()) | |
3756 | return true; | |
3757 | ||
3758 | scoped_restore_current_thread restore_thread; | |
3759 | ||
3760 | for (inferior *inf : all_inferiors ()) | |
3761 | { | |
3762 | switch_to_inferior_no_thread (inf); | |
3763 | if (target_is_non_stop_p ()) | |
3764 | return true; | |
3765 | } | |
3766 | ||
3767 | return false; | |
3768 | } | |
3769 | ||
fbea99ea PA |
3770 | /* Controls if targets can report that they always run in non-stop |
3771 | mode. This is just for maintainers to use when debugging gdb. */ | |
3772 | enum auto_boolean target_non_stop_enabled = AUTO_BOOLEAN_AUTO; | |
3773 | ||
3774 | /* The set command writes to this variable. If the inferior is | |
3775 | executing, target_non_stop_enabled is *not* updated. */ | |
3776 | static enum auto_boolean target_non_stop_enabled_1 = AUTO_BOOLEAN_AUTO; | |
3777 | ||
3778 | /* Implementation of "maint set target-non-stop". */ | |
3779 | ||
3780 | static void | |
eb4c3f4a | 3781 | maint_set_target_non_stop_command (const char *args, int from_tty, |
fbea99ea PA |
3782 | struct cmd_list_element *c) |
3783 | { | |
3784 | if (have_live_inferiors ()) | |
3785 | { | |
3786 | target_non_stop_enabled_1 = target_non_stop_enabled; | |
3787 | error (_("Cannot change this setting while the inferior is running.")); | |
3788 | } | |
3789 | ||
3790 | target_non_stop_enabled = target_non_stop_enabled_1; | |
3791 | } | |
3792 | ||
3793 | /* Implementation of "maint show target-non-stop". */ | |
3794 | ||
3795 | static void | |
3796 | maint_show_target_non_stop_command (struct ui_file *file, int from_tty, | |
3797 | struct cmd_list_element *c, | |
3798 | const char *value) | |
3799 | { | |
3800 | if (target_non_stop_enabled == AUTO_BOOLEAN_AUTO) | |
3801 | fprintf_filtered (file, | |
3802 | _("Whether the target is always in non-stop mode " | |
3803 | "is %s (currently %s).\n"), value, | |
3804 | target_always_non_stop_p () ? "on" : "off"); | |
3805 | else | |
3806 | fprintf_filtered (file, | |
3807 | _("Whether the target is always in non-stop mode " | |
3808 | "is %s.\n"), value); | |
3809 | } | |
3810 | ||
d914c394 SS |
3811 | /* Temporary copies of permission settings. */ |
3812 | ||
491144b5 CB |
3813 | static bool may_write_registers_1 = true; |
3814 | static bool may_write_memory_1 = true; | |
3815 | static bool may_insert_breakpoints_1 = true; | |
3816 | static bool may_insert_tracepoints_1 = true; | |
3817 | static bool may_insert_fast_tracepoints_1 = true; | |
3818 | static bool may_stop_1 = true; | |
d914c394 SS |
3819 | |
3820 | /* Make the user-set values match the real values again. */ | |
3821 | ||
3822 | void | |
3823 | update_target_permissions (void) | |
3824 | { | |
3825 | may_write_registers_1 = may_write_registers; | |
3826 | may_write_memory_1 = may_write_memory; | |
3827 | may_insert_breakpoints_1 = may_insert_breakpoints; | |
3828 | may_insert_tracepoints_1 = may_insert_tracepoints; | |
3829 | may_insert_fast_tracepoints_1 = may_insert_fast_tracepoints; | |
3830 | may_stop_1 = may_stop; | |
3831 | } | |
3832 | ||
3833 | /* The one function handles (most of) the permission flags in the same | |
3834 | way. */ | |
3835 | ||
3836 | static void | |
eb4c3f4a | 3837 | set_target_permissions (const char *args, int from_tty, |
d914c394 SS |
3838 | struct cmd_list_element *c) |
3839 | { | |
55f6301a | 3840 | if (target_has_execution ()) |
d914c394 SS |
3841 | { |
3842 | update_target_permissions (); | |
3843 | error (_("Cannot change this setting while the inferior is running.")); | |
3844 | } | |
3845 | ||
3846 | /* Make the real values match the user-changed values. */ | |
3847 | may_write_registers = may_write_registers_1; | |
3848 | may_insert_breakpoints = may_insert_breakpoints_1; | |
3849 | may_insert_tracepoints = may_insert_tracepoints_1; | |
3850 | may_insert_fast_tracepoints = may_insert_fast_tracepoints_1; | |
3851 | may_stop = may_stop_1; | |
3852 | update_observer_mode (); | |
3853 | } | |
3854 | ||
3855 | /* Set memory write permission independently of observer mode. */ | |
3856 | ||
3857 | static void | |
eb4c3f4a | 3858 | set_write_memory_permission (const char *args, int from_tty, |
d914c394 SS |
3859 | struct cmd_list_element *c) |
3860 | { | |
3861 | /* Make the real values match the user-changed values. */ | |
3862 | may_write_memory = may_write_memory_1; | |
3863 | update_observer_mode (); | |
3864 | } | |
3865 | ||
6c265988 SM |
3866 | void _initialize_target (); |
3867 | ||
c906108c | 3868 | void |
5b6d1e4f | 3869 | _initialize_target () |
c906108c | 3870 | { |
f6ac5f3d | 3871 | the_debug_target = new debug_target (); |
c906108c | 3872 | |
11db9430 SM |
3873 | add_info ("target", info_target_command, targ_desc); |
3874 | add_info ("files", info_target_command, targ_desc); | |
c906108c | 3875 | |
ccce17b0 | 3876 | add_setshow_zuinteger_cmd ("target", class_maintenance, &targetdebug, _("\ |
85c07804 AC |
3877 | Set target debugging."), _("\ |
3878 | Show target debugging."), _("\ | |
333dabeb | 3879 | When non-zero, target debugging is enabled. Higher numbers are more\n\ |
3cecbbbe TT |
3880 | verbose."), |
3881 | set_targetdebug, | |
ccce17b0 YQ |
3882 | show_targetdebug, |
3883 | &setdebuglist, &showdebuglist); | |
3a11626d | 3884 | |
2bc416ba | 3885 | add_setshow_boolean_cmd ("trust-readonly-sections", class_support, |
7915a72c AC |
3886 | &trust_readonly, _("\ |
3887 | Set mode for reading from readonly sections."), _("\ | |
3888 | Show mode for reading from readonly sections."), _("\ | |
3a11626d MS |
3889 | When this mode is on, memory reads from readonly sections (such as .text)\n\ |
3890 | will be read from the object file instead of from the target. This will\n\ | |
7915a72c | 3891 | result in significant performance improvement for remote targets."), |
2c5b56ce | 3892 | NULL, |
920d2a44 | 3893 | show_trust_readonly, |
e707bbc2 | 3894 | &setlist, &showlist); |
96baa820 JM |
3895 | |
3896 | add_com ("monitor", class_obscure, do_monitor_command, | |
1bedd215 | 3897 | _("Send a command to the remote monitor (remote targets only).")); |
96baa820 | 3898 | |
87680a14 | 3899 | add_cmd ("target-stack", class_maintenance, maintenance_print_target_stack, |
dda83cd7 SM |
3900 | _("Print the name of each layer of the internal target stack."), |
3901 | &maintenanceprintlist); | |
87680a14 | 3902 | |
c6ebd6cf VP |
3903 | add_setshow_boolean_cmd ("target-async", no_class, |
3904 | &target_async_permitted_1, _("\ | |
3905 | Set whether gdb controls the inferior in asynchronous mode."), _("\ | |
3906 | Show whether gdb controls the inferior in asynchronous mode."), _("\ | |
3907 | Tells gdb whether to control the inferior in asynchronous mode."), | |
329ea579 PA |
3908 | maint_set_target_async_command, |
3909 | maint_show_target_async_command, | |
3910 | &maintenance_set_cmdlist, | |
3911 | &maintenance_show_cmdlist); | |
c6ebd6cf | 3912 | |
fbea99ea PA |
3913 | add_setshow_auto_boolean_cmd ("target-non-stop", no_class, |
3914 | &target_non_stop_enabled_1, _("\ | |
3915 | Set whether gdb always controls the inferior in non-stop mode."), _("\ | |
3916 | Show whether gdb always controls the inferior in non-stop mode."), _("\ | |
3917 | Tells gdb whether to control the inferior in non-stop mode."), | |
3918 | maint_set_target_non_stop_command, | |
3919 | maint_show_target_non_stop_command, | |
3920 | &maintenance_set_cmdlist, | |
3921 | &maintenance_show_cmdlist); | |
3922 | ||
d914c394 SS |
3923 | add_setshow_boolean_cmd ("may-write-registers", class_support, |
3924 | &may_write_registers_1, _("\ | |
3925 | Set permission to write into registers."), _("\ | |
3926 | Show permission to write into registers."), _("\ | |
3927 | When this permission is on, GDB may write into the target's registers.\n\ | |
3928 | Otherwise, any sort of write attempt will result in an error."), | |
3929 | set_target_permissions, NULL, | |
3930 | &setlist, &showlist); | |
3931 | ||
3932 | add_setshow_boolean_cmd ("may-write-memory", class_support, | |
3933 | &may_write_memory_1, _("\ | |
3934 | Set permission to write into target memory."), _("\ | |
3935 | Show permission to write into target memory."), _("\ | |
3936 | When this permission is on, GDB may write into the target's memory.\n\ | |
3937 | Otherwise, any sort of write attempt will result in an error."), | |
3938 | set_write_memory_permission, NULL, | |
3939 | &setlist, &showlist); | |
3940 | ||
3941 | add_setshow_boolean_cmd ("may-insert-breakpoints", class_support, | |
3942 | &may_insert_breakpoints_1, _("\ | |
3943 | Set permission to insert breakpoints in the target."), _("\ | |
3944 | Show permission to insert breakpoints in the target."), _("\ | |
3945 | When this permission is on, GDB may insert breakpoints in the program.\n\ | |
3946 | Otherwise, any sort of insertion attempt will result in an error."), | |
3947 | set_target_permissions, NULL, | |
3948 | &setlist, &showlist); | |
3949 | ||
3950 | add_setshow_boolean_cmd ("may-insert-tracepoints", class_support, | |
3951 | &may_insert_tracepoints_1, _("\ | |
3952 | Set permission to insert tracepoints in the target."), _("\ | |
3953 | Show permission to insert tracepoints in the target."), _("\ | |
3954 | When this permission is on, GDB may insert tracepoints in the program.\n\ | |
3955 | Otherwise, any sort of insertion attempt will result in an error."), | |
3956 | set_target_permissions, NULL, | |
3957 | &setlist, &showlist); | |
3958 | ||
3959 | add_setshow_boolean_cmd ("may-insert-fast-tracepoints", class_support, | |
3960 | &may_insert_fast_tracepoints_1, _("\ | |
3961 | Set permission to insert fast tracepoints in the target."), _("\ | |
3962 | Show permission to insert fast tracepoints in the target."), _("\ | |
3963 | When this permission is on, GDB may insert fast tracepoints.\n\ | |
3964 | Otherwise, any sort of insertion attempt will result in an error."), | |
3965 | set_target_permissions, NULL, | |
3966 | &setlist, &showlist); | |
3967 | ||
3968 | add_setshow_boolean_cmd ("may-interrupt", class_support, | |
3969 | &may_stop_1, _("\ | |
3970 | Set permission to interrupt or signal the target."), _("\ | |
3971 | Show permission to interrupt or signal the target."), _("\ | |
3972 | When this permission is on, GDB may interrupt/stop the target's execution.\n\ | |
3973 | Otherwise, any attempt to interrupt or stop will be ignored."), | |
3974 | set_target_permissions, NULL, | |
3975 | &setlist, &showlist); | |
6a3cb8e8 | 3976 | |
78cbbba8 | 3977 | add_com ("flash-erase", no_class, flash_erase_command, |
dda83cd7 | 3978 | _("Erase all flash memory regions.")); |
78cbbba8 | 3979 | |
6a3cb8e8 PA |
3980 | add_setshow_boolean_cmd ("auto-connect-native-target", class_support, |
3981 | &auto_connect_native_target, _("\ | |
3982 | Set whether GDB may automatically connect to the native target."), _("\ | |
3983 | Show whether GDB may automatically connect to the native target."), _("\ | |
3984 | When on, and GDB is not connected to a target yet, GDB\n\ | |
3985 | attempts \"run\" and other commands with the native target."), | |
3986 | NULL, show_auto_connect_native_target, | |
3987 | &setlist, &showlist); | |
c906108c | 3988 | } |