Commit | Line | Data |
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c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c | 2 | |
6aba47ca | 3 | Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, |
0fb0cc75 | 4 | 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 |
29182b13 | 5 | Free Software Foundation, Inc. |
c906108c | 6 | |
c5aa993b JM |
7 | This file is part of GDB. |
8 | ||
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 JM |
12 | (at your option) any later version. |
13 | ||
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. | |
18 | ||
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/>. */ |
c5aa993b | 21 | |
23860348 | 22 | /* See the GDB User Guide for details of the GDB remote protocol. */ |
c5aa993b | 23 | |
c906108c SS |
24 | #include "defs.h" |
25 | #include "gdb_string.h" | |
26 | #include <ctype.h> | |
27 | #include <fcntl.h> | |
c906108c SS |
28 | #include "inferior.h" |
29 | #include "bfd.h" | |
30 | #include "symfile.h" | |
60250e8b | 31 | #include "exceptions.h" |
c906108c | 32 | #include "target.h" |
c5aa993b | 33 | /*#include "terminal.h" */ |
c906108c SS |
34 | #include "gdbcmd.h" |
35 | #include "objfiles.h" | |
36 | #include "gdb-stabs.h" | |
37 | #include "gdbthread.h" | |
c2c6d25f | 38 | #include "remote.h" |
4e052eda | 39 | #include "regcache.h" |
fd0407d6 | 40 | #include "value.h" |
1ff9c3d6 | 41 | #include "gdb_assert.h" |
6867ae3e | 42 | #include "observer.h" |
a77053c2 | 43 | #include "solib.h" |
37a105a1 DJ |
44 | #include "cli/cli-decode.h" |
45 | #include "cli/cli-setshow.h" | |
424163ea | 46 | #include "target-descriptions.h" |
c906108c | 47 | |
7a292a7a | 48 | #include <ctype.h> |
9846de1b | 49 | #include <sys/time.h> |
c906108c | 50 | |
43ff13b4 | 51 | #include "event-loop.h" |
c2c6d25f | 52 | #include "event-top.h" |
2acceee2 | 53 | #include "inf-loop.h" |
43ff13b4 | 54 | |
c906108c SS |
55 | #include <signal.h> |
56 | #include "serial.h" | |
57 | ||
6240bebf MS |
58 | #include "gdbcore.h" /* for exec_bfd */ |
59 | ||
449092f6 | 60 | #include "remote-fileio.h" |
a6b151f1 | 61 | #include "gdb/fileio.h" |
3e88cf8d | 62 | #include "gdb_stat.h" |
449092f6 | 63 | |
fd79ecee DJ |
64 | #include "memory-map.h" |
65 | ||
6765f3e5 DJ |
66 | /* The size to align memory write packets, when practical. The protocol |
67 | does not guarantee any alignment, and gdb will generate short | |
68 | writes and unaligned writes, but even as a best-effort attempt this | |
69 | can improve bulk transfers. For instance, if a write is misaligned | |
70 | relative to the target's data bus, the stub may need to make an extra | |
71 | round trip fetching data from the target. This doesn't make a | |
72 | huge difference, but it's easy to do, so we try to be helpful. | |
73 | ||
74 | The alignment chosen is arbitrary; usually data bus width is | |
75 | important here, not the possibly larger cache line size. */ | |
76 | enum { REMOTE_ALIGN_WRITES = 16 }; | |
77 | ||
23860348 | 78 | /* Prototypes for local functions. */ |
6426a772 JM |
79 | static void cleanup_sigint_signal_handler (void *dummy); |
80 | static void initialize_sigint_signal_handler (void); | |
6d820c5c | 81 | static int getpkt_sane (char **buf, long *sizeof_buf, int forever); |
74531fed PA |
82 | static int getpkt_or_notif_sane (char **buf, long *sizeof_buf, |
83 | int forever); | |
6426a772 | 84 | |
a14ed312 KB |
85 | static void handle_remote_sigint (int); |
86 | static void handle_remote_sigint_twice (int); | |
87 | static void async_remote_interrupt (gdb_client_data); | |
88 | void async_remote_interrupt_twice (gdb_client_data); | |
43ff13b4 | 89 | |
a14ed312 | 90 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 91 | |
316f2060 | 92 | static void remote_prepare_to_store (struct regcache *regcache); |
c906108c | 93 | |
a14ed312 | 94 | static void remote_open (char *name, int from_tty); |
c906108c | 95 | |
a14ed312 | 96 | static void extended_remote_open (char *name, int from_tty); |
c906108c | 97 | |
75c99385 | 98 | static void remote_open_1 (char *, int, struct target_ops *, int extended_p); |
c906108c | 99 | |
a14ed312 | 100 | static void remote_close (int quitting); |
c906108c | 101 | |
136d6dae | 102 | static void remote_mourn (struct target_ops *ops); |
c906108c | 103 | |
a14ed312 | 104 | static void extended_remote_restart (void); |
c906108c | 105 | |
136d6dae | 106 | static void extended_remote_mourn (struct target_ops *); |
c906108c | 107 | |
a14ed312 | 108 | static void remote_mourn_1 (struct target_ops *); |
c906108c | 109 | |
6d820c5c | 110 | static void remote_send (char **buf, long *sizeof_buf_p); |
c906108c | 111 | |
a14ed312 | 112 | static int readchar (int timeout); |
c906108c | 113 | |
7d85a9c0 | 114 | static void remote_kill (struct target_ops *ops); |
c906108c | 115 | |
a14ed312 | 116 | static int tohex (int nib); |
c906108c | 117 | |
75c99385 PA |
118 | static int remote_can_async_p (void); |
119 | ||
120 | static int remote_is_async_p (void); | |
121 | ||
122 | static void remote_async (void (*callback) (enum inferior_event_type event_type, | |
123 | void *context), void *context); | |
124 | ||
125 | static int remote_async_mask (int new_mask); | |
126 | ||
136d6dae | 127 | static void remote_detach (struct target_ops *ops, char *args, int from_tty); |
c906108c | 128 | |
a14ed312 | 129 | static void remote_interrupt (int signo); |
c906108c | 130 | |
a14ed312 | 131 | static void remote_interrupt_twice (int signo); |
7a292a7a | 132 | |
a14ed312 | 133 | static void interrupt_query (void); |
c906108c | 134 | |
79d7f229 PA |
135 | static void set_general_thread (struct ptid ptid); |
136 | static void set_continue_thread (struct ptid ptid); | |
c906108c | 137 | |
a14ed312 | 138 | static void get_offsets (void); |
c906108c | 139 | |
6d820c5c DJ |
140 | static void skip_frame (void); |
141 | ||
142 | static long read_frame (char **buf_p, long *sizeof_buf); | |
c906108c | 143 | |
a14ed312 | 144 | static int hexnumlen (ULONGEST num); |
c906108c | 145 | |
a14ed312 | 146 | static void init_remote_ops (void); |
c906108c | 147 | |
a14ed312 | 148 | static void init_extended_remote_ops (void); |
c906108c | 149 | |
94cc34af | 150 | static void remote_stop (ptid_t); |
c906108c | 151 | |
a14ed312 | 152 | static int ishex (int ch, int *val); |
c906108c | 153 | |
a14ed312 | 154 | static int stubhex (int ch); |
c906108c | 155 | |
a14ed312 | 156 | static int hexnumstr (char *, ULONGEST); |
c906108c | 157 | |
a14ed312 | 158 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 159 | |
a14ed312 | 160 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 161 | |
a14ed312 | 162 | static void print_packet (char *); |
c906108c | 163 | |
a14ed312 | 164 | static unsigned long crc32 (unsigned char *, int, unsigned int); |
c906108c | 165 | |
a14ed312 | 166 | static void compare_sections_command (char *, int); |
c906108c | 167 | |
a14ed312 | 168 | static void packet_command (char *, int); |
c906108c | 169 | |
a14ed312 | 170 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 171 | |
39f77062 | 172 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 173 | |
a14ed312 | 174 | static void remote_find_new_threads (void); |
c906108c | 175 | |
79d7f229 | 176 | static void record_currthread (ptid_t currthread); |
c906108c | 177 | |
30559e10 | 178 | static int fromhex (int a); |
c906108c | 179 | |
cfd77fa1 | 180 | static int hex2bin (const char *hex, gdb_byte *bin, int count); |
c906108c | 181 | |
cfd77fa1 | 182 | static int bin2hex (const gdb_byte *bin, char *hex, int count); |
234fa6d1 | 183 | |
a14ed312 | 184 | static int putpkt_binary (char *buf, int cnt); |
c906108c | 185 | |
a14ed312 | 186 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 187 | |
5a2468f5 | 188 | struct packet_config; |
5a2468f5 | 189 | |
a14ed312 | 190 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 191 | |
d471ea57 | 192 | static void update_packet_config (struct packet_config *config); |
5a2468f5 | 193 | |
bb572ddd DJ |
194 | static void set_remote_protocol_packet_cmd (char *args, int from_tty, |
195 | struct cmd_list_element *c); | |
196 | ||
197 | static void show_remote_protocol_packet_cmd (struct ui_file *file, | |
198 | int from_tty, | |
199 | struct cmd_list_element *c, | |
200 | const char *value); | |
201 | ||
82f73884 PA |
202 | static char *write_ptid (char *buf, const char *endbuf, ptid_t ptid); |
203 | static ptid_t read_ptid (char *buf, char **obuf); | |
204 | ||
c8d104ad PA |
205 | static void remote_query_supported (void); |
206 | ||
207 | static void remote_check_symbols (struct objfile *objfile); | |
208 | ||
a14ed312 | 209 | void _initialize_remote (void); |
c906108c | 210 | |
74531fed PA |
211 | struct stop_reply; |
212 | static struct stop_reply *stop_reply_xmalloc (void); | |
213 | static void stop_reply_xfree (struct stop_reply *); | |
214 | static void do_stop_reply_xfree (void *arg); | |
215 | static void remote_parse_stop_reply (char *buf, struct stop_reply *); | |
216 | static void push_stop_reply (struct stop_reply *); | |
217 | static void remote_get_pending_stop_replies (void); | |
218 | static void discard_pending_stop_replies (int pid); | |
219 | static int peek_stop_reply (ptid_t ptid); | |
220 | ||
221 | static void remote_async_inferior_event_handler (gdb_client_data); | |
222 | static void remote_async_get_pending_events_handler (gdb_client_data); | |
223 | ||
d3fd5342 PA |
224 | static void remote_terminal_ours (void); |
225 | ||
d962ef82 DJ |
226 | static int remote_read_description_p (struct target_ops *target); |
227 | ||
74531fed PA |
228 | /* The non-stop remote protocol provisions for one pending stop reply. |
229 | This is where we keep it until it is acknowledged. */ | |
230 | ||
231 | static struct stop_reply *pending_stop_reply = NULL; | |
232 | ||
a6b151f1 DJ |
233 | /* For "remote". */ |
234 | ||
235 | static struct cmd_list_element *remote_cmdlist; | |
236 | ||
bb572ddd DJ |
237 | /* For "set remote" and "show remote". */ |
238 | ||
239 | static struct cmd_list_element *remote_set_cmdlist; | |
240 | static struct cmd_list_element *remote_show_cmdlist; | |
241 | ||
ea9c271d DJ |
242 | /* Description of the remote protocol state for the currently |
243 | connected target. This is per-target state, and independent of the | |
244 | selected architecture. */ | |
245 | ||
246 | struct remote_state | |
247 | { | |
248 | /* A buffer to use for incoming packets, and its current size. The | |
249 | buffer is grown dynamically for larger incoming packets. | |
250 | Outgoing packets may also be constructed in this buffer. | |
251 | BUF_SIZE is always at least REMOTE_PACKET_SIZE; | |
252 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing | |
253 | packets. */ | |
254 | char *buf; | |
255 | long buf_size; | |
be2a5f71 DJ |
256 | |
257 | /* If we negotiated packet size explicitly (and thus can bypass | |
258 | heuristics for the largest packet size that will not overflow | |
259 | a buffer in the stub), this will be set to that packet size. | |
260 | Otherwise zero, meaning to use the guessed size. */ | |
261 | long explicit_packet_size; | |
2d717e4f DJ |
262 | |
263 | /* remote_wait is normally called when the target is running and | |
264 | waits for a stop reply packet. But sometimes we need to call it | |
265 | when the target is already stopped. We can send a "?" packet | |
266 | and have remote_wait read the response. Or, if we already have | |
267 | the response, we can stash it in BUF and tell remote_wait to | |
268 | skip calling getpkt. This flag is set when BUF contains a | |
269 | stop reply packet and the target is not waiting. */ | |
270 | int cached_wait_status; | |
a6f3e723 SL |
271 | |
272 | /* True, if in no ack mode. That is, neither GDB nor the stub will | |
273 | expect acks from each other. The connection is assumed to be | |
274 | reliable. */ | |
275 | int noack_mode; | |
82f73884 PA |
276 | |
277 | /* True if we're connected in extended remote mode. */ | |
278 | int extended; | |
279 | ||
280 | /* True if the stub reported support for multi-process | |
281 | extensions. */ | |
282 | int multi_process_aware; | |
e24a49d8 PA |
283 | |
284 | /* True if we resumed the target and we're waiting for the target to | |
285 | stop. In the mean time, we can't start another command/query. | |
286 | The remote server wouldn't be ready to process it, so we'd | |
287 | timeout waiting for a reply that would never come and eventually | |
288 | we'd close the connection. This can happen in asynchronous mode | |
289 | because we allow GDB commands while the target is running. */ | |
290 | int waiting_for_stop_reply; | |
74531fed PA |
291 | |
292 | /* True if the stub reports support for non-stop mode. */ | |
293 | int non_stop_aware; | |
294 | ||
295 | /* True if the stub reports support for vCont;t. */ | |
296 | int support_vCont_t; | |
782b2b07 SS |
297 | |
298 | /* True if the stub reports support for conditional tracepoints. */ | |
299 | int cond_tracepoints; | |
ea9c271d DJ |
300 | }; |
301 | ||
82f73884 PA |
302 | /* Returns true if the multi-process extensions are in effect. */ |
303 | static int | |
304 | remote_multi_process_p (struct remote_state *rs) | |
305 | { | |
306 | return rs->extended && rs->multi_process_aware; | |
307 | } | |
308 | ||
ea9c271d DJ |
309 | /* This data could be associated with a target, but we do not always |
310 | have access to the current target when we need it, so for now it is | |
311 | static. This will be fine for as long as only one target is in use | |
312 | at a time. */ | |
313 | static struct remote_state remote_state; | |
314 | ||
315 | static struct remote_state * | |
0b83947e | 316 | get_remote_state_raw (void) |
ea9c271d DJ |
317 | { |
318 | return &remote_state; | |
319 | } | |
320 | ||
321 | /* Description of the remote protocol for a given architecture. */ | |
d01949b6 | 322 | |
ad10f812 AC |
323 | struct packet_reg |
324 | { | |
325 | long offset; /* Offset into G packet. */ | |
326 | long regnum; /* GDB's internal register number. */ | |
327 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 328 | int in_g_packet; /* Always part of G packet. */ |
1cf3db46 | 329 | /* long size in bytes; == register_size (target_gdbarch, regnum); |
23860348 | 330 | at present. */ |
1cf3db46 | 331 | /* char *name; == gdbarch_register_name (target_gdbarch, regnum); |
c9f4d572 | 332 | at present. */ |
ad10f812 AC |
333 | }; |
334 | ||
ea9c271d | 335 | struct remote_arch_state |
d01949b6 | 336 | { |
ad10f812 AC |
337 | /* Description of the remote protocol registers. */ |
338 | long sizeof_g_packet; | |
b323314b AC |
339 | |
340 | /* Description of the remote protocol registers indexed by REGNUM | |
f57d151a | 341 | (making an array gdbarch_num_regs in size). */ |
b323314b | 342 | struct packet_reg *regs; |
ad10f812 | 343 | |
d01949b6 AC |
344 | /* This is the size (in chars) of the first response to the ``g'' |
345 | packet. It is used as a heuristic when determining the maximum | |
346 | size of memory-read and memory-write packets. A target will | |
347 | typically only reserve a buffer large enough to hold the ``g'' | |
348 | packet. The size does not include packet overhead (headers and | |
23860348 | 349 | trailers). */ |
d01949b6 AC |
350 | long actual_register_packet_size; |
351 | ||
352 | /* This is the maximum size (in chars) of a non read/write packet. | |
23860348 | 353 | It is also used as a cap on the size of read/write packets. */ |
d01949b6 AC |
354 | long remote_packet_size; |
355 | }; | |
356 | ||
3c3bea1c | 357 | |
d01949b6 AC |
358 | /* Handle for retreving the remote protocol data from gdbarch. */ |
359 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
360 | ||
ea9c271d DJ |
361 | static struct remote_arch_state * |
362 | get_remote_arch_state (void) | |
d01949b6 | 363 | { |
1cf3db46 | 364 | return gdbarch_data (target_gdbarch, remote_gdbarch_data_handle); |
d01949b6 AC |
365 | } |
366 | ||
0b83947e DJ |
367 | /* Fetch the global remote target state. */ |
368 | ||
369 | static struct remote_state * | |
370 | get_remote_state (void) | |
371 | { | |
372 | /* Make sure that the remote architecture state has been | |
373 | initialized, because doing so might reallocate rs->buf. Any | |
374 | function which calls getpkt also needs to be mindful of changes | |
375 | to rs->buf, but this call limits the number of places which run | |
376 | into trouble. */ | |
377 | get_remote_arch_state (); | |
378 | ||
379 | return get_remote_state_raw (); | |
380 | } | |
381 | ||
74ca34ce DJ |
382 | static int |
383 | compare_pnums (const void *lhs_, const void *rhs_) | |
384 | { | |
385 | const struct packet_reg * const *lhs = lhs_; | |
386 | const struct packet_reg * const *rhs = rhs_; | |
387 | ||
388 | if ((*lhs)->pnum < (*rhs)->pnum) | |
389 | return -1; | |
390 | else if ((*lhs)->pnum == (*rhs)->pnum) | |
391 | return 0; | |
392 | else | |
393 | return 1; | |
394 | } | |
395 | ||
d01949b6 AC |
396 | static void * |
397 | init_remote_state (struct gdbarch *gdbarch) | |
398 | { | |
74ca34ce | 399 | int regnum, num_remote_regs, offset; |
0b83947e | 400 | struct remote_state *rs = get_remote_state_raw (); |
ea9c271d | 401 | struct remote_arch_state *rsa; |
74ca34ce | 402 | struct packet_reg **remote_regs; |
ea9c271d DJ |
403 | |
404 | rsa = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_arch_state); | |
d01949b6 | 405 | |
123dc839 DJ |
406 | /* Use the architecture to build a regnum<->pnum table, which will be |
407 | 1:1 unless a feature set specifies otherwise. */ | |
f57d151a | 408 | rsa->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, |
4a22f64d | 409 | gdbarch_num_regs (gdbarch), |
f57d151a | 410 | struct packet_reg); |
4a22f64d | 411 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) |
ad10f812 | 412 | { |
ea9c271d | 413 | struct packet_reg *r = &rsa->regs[regnum]; |
baef701f | 414 | |
4a22f64d | 415 | if (register_size (gdbarch, regnum) == 0) |
baef701f DJ |
416 | /* Do not try to fetch zero-sized (placeholder) registers. */ |
417 | r->pnum = -1; | |
418 | else | |
419 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
420 | ||
b323314b | 421 | r->regnum = regnum; |
74ca34ce DJ |
422 | } |
423 | ||
424 | /* Define the g/G packet format as the contents of each register | |
425 | with a remote protocol number, in order of ascending protocol | |
426 | number. */ | |
427 | ||
4a22f64d UW |
428 | remote_regs = alloca (gdbarch_num_regs (gdbarch) |
429 | * sizeof (struct packet_reg *)); | |
f57d151a | 430 | for (num_remote_regs = 0, regnum = 0; |
4a22f64d | 431 | regnum < gdbarch_num_regs (gdbarch); |
f57d151a | 432 | regnum++) |
74ca34ce DJ |
433 | if (rsa->regs[regnum].pnum != -1) |
434 | remote_regs[num_remote_regs++] = &rsa->regs[regnum]; | |
7d58c67d | 435 | |
74ca34ce DJ |
436 | qsort (remote_regs, num_remote_regs, sizeof (struct packet_reg *), |
437 | compare_pnums); | |
438 | ||
439 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
440 | { | |
441 | remote_regs[regnum]->in_g_packet = 1; | |
442 | remote_regs[regnum]->offset = offset; | |
4a22f64d | 443 | offset += register_size (gdbarch, remote_regs[regnum]->regnum); |
ad10f812 AC |
444 | } |
445 | ||
74ca34ce DJ |
446 | /* Record the maximum possible size of the g packet - it may turn out |
447 | to be smaller. */ | |
448 | rsa->sizeof_g_packet = offset; | |
449 | ||
d01949b6 AC |
450 | /* Default maximum number of characters in a packet body. Many |
451 | remote stubs have a hardwired buffer size of 400 bytes | |
452 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
453 | as the maximum packet-size to ensure that the packet and an extra | |
454 | NUL character can always fit in the buffer. This stops GDB | |
455 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d DJ |
456 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
457 | rsa->remote_packet_size = 400 - 1; | |
d01949b6 | 458 | |
ea9c271d DJ |
459 | /* This one is filled in when a ``g'' packet is received. */ |
460 | rsa->actual_register_packet_size = 0; | |
461 | ||
462 | /* Should rsa->sizeof_g_packet needs more space than the | |
ad10f812 AC |
463 | default, adjust the size accordingly. Remember that each byte is |
464 | encoded as two characters. 32 is the overhead for the packet | |
465 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 466 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 467 | little. */ |
ea9c271d DJ |
468 | if (rsa->sizeof_g_packet > ((rsa->remote_packet_size - 32) / 2)) |
469 | rsa->remote_packet_size = (rsa->sizeof_g_packet * 2 + 32); | |
802188a7 | 470 | |
ea9c271d DJ |
471 | /* Make sure that the packet buffer is plenty big enough for |
472 | this architecture. */ | |
473 | if (rs->buf_size < rsa->remote_packet_size) | |
474 | { | |
475 | rs->buf_size = 2 * rsa->remote_packet_size; | |
7fca722e | 476 | rs->buf = xrealloc (rs->buf, rs->buf_size); |
ea9c271d | 477 | } |
6d820c5c | 478 | |
ea9c271d DJ |
479 | return rsa; |
480 | } | |
481 | ||
482 | /* Return the current allowed size of a remote packet. This is | |
483 | inferred from the current architecture, and should be used to | |
484 | limit the length of outgoing packets. */ | |
485 | static long | |
486 | get_remote_packet_size (void) | |
487 | { | |
be2a5f71 | 488 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
489 | struct remote_arch_state *rsa = get_remote_arch_state (); |
490 | ||
be2a5f71 DJ |
491 | if (rs->explicit_packet_size) |
492 | return rs->explicit_packet_size; | |
493 | ||
ea9c271d | 494 | return rsa->remote_packet_size; |
d01949b6 AC |
495 | } |
496 | ||
ad10f812 | 497 | static struct packet_reg * |
ea9c271d | 498 | packet_reg_from_regnum (struct remote_arch_state *rsa, long regnum) |
ad10f812 | 499 | { |
1cf3db46 | 500 | if (regnum < 0 && regnum >= gdbarch_num_regs (target_gdbarch)) |
b323314b AC |
501 | return NULL; |
502 | else | |
ad10f812 | 503 | { |
ea9c271d | 504 | struct packet_reg *r = &rsa->regs[regnum]; |
b323314b AC |
505 | gdb_assert (r->regnum == regnum); |
506 | return r; | |
ad10f812 | 507 | } |
ad10f812 AC |
508 | } |
509 | ||
510 | static struct packet_reg * | |
ea9c271d | 511 | packet_reg_from_pnum (struct remote_arch_state *rsa, LONGEST pnum) |
ad10f812 | 512 | { |
b323314b | 513 | int i; |
1cf3db46 | 514 | for (i = 0; i < gdbarch_num_regs (target_gdbarch); i++) |
ad10f812 | 515 | { |
ea9c271d | 516 | struct packet_reg *r = &rsa->regs[i]; |
b323314b AC |
517 | if (r->pnum == pnum) |
518 | return r; | |
ad10f812 AC |
519 | } |
520 | return NULL; | |
d01949b6 AC |
521 | } |
522 | ||
3c3bea1c GS |
523 | /* FIXME: graces/2002-08-08: These variables should eventually be |
524 | bound to an instance of the target object (as in gdbarch-tdep()), | |
525 | when such a thing exists. */ | |
526 | ||
527 | /* This is set to the data address of the access causing the target | |
528 | to stop for a watchpoint. */ | |
529 | static CORE_ADDR remote_watch_data_address; | |
530 | ||
94e08568 | 531 | /* This is non-zero if target stopped for a watchpoint. */ |
3c3bea1c GS |
532 | static int remote_stopped_by_watchpoint_p; |
533 | ||
c906108c SS |
534 | static struct target_ops remote_ops; |
535 | ||
536 | static struct target_ops extended_remote_ops; | |
537 | ||
b84876c2 PA |
538 | static int remote_async_mask_value = 1; |
539 | ||
6426a772 JM |
540 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
541 | ``forever'' still use the normal timeout mechanism. This is | |
542 | currently used by the ASYNC code to guarentee that target reads | |
543 | during the initial connect always time-out. Once getpkt has been | |
544 | modified to return a timeout indication and, in turn | |
545 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 546 | this can go away. */ |
6426a772 JM |
547 | static int wait_forever_enabled_p = 1; |
548 | ||
549 | ||
c906108c SS |
550 | /* This variable chooses whether to send a ^C or a break when the user |
551 | requests program interruption. Although ^C is usually what remote | |
552 | systems expect, and that is the default here, sometimes a break is | |
553 | preferable instead. */ | |
554 | ||
555 | static int remote_break; | |
556 | ||
c906108c SS |
557 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
558 | remote_open knows that we don't have a file open when the program | |
559 | starts. */ | |
819cc324 | 560 | static struct serial *remote_desc = NULL; |
c906108c | 561 | |
c906108c SS |
562 | /* This variable sets the number of bits in an address that are to be |
563 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
564 | leading zeros, the entire address would be sent. This variable | |
565 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The | |
566 | initial implementation of remote.c restricted the address sent in | |
567 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
568 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
569 | address was never sent. Since fixing this bug may cause a break in | |
570 | some remote targets this variable is principly provided to | |
23860348 | 571 | facilitate backward compatibility. */ |
c906108c SS |
572 | |
573 | static int remote_address_size; | |
574 | ||
75c99385 PA |
575 | /* Temporary to track who currently owns the terminal. See |
576 | remote_terminal_* for more details. */ | |
6426a772 JM |
577 | |
578 | static int remote_async_terminal_ours_p; | |
579 | ||
2d717e4f DJ |
580 | /* The executable file to use for "run" on the remote side. */ |
581 | ||
582 | static char *remote_exec_file = ""; | |
583 | ||
11cf8741 | 584 | \f |
11cf8741 | 585 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
586 | memory read/write packet. MIN (rsa->remote_packet_size, |
587 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 588 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
589 | (speed up transfers). The variables ``preferred_*'' (the user |
590 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 591 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
592 | |
593 | struct memory_packet_config | |
594 | { | |
595 | char *name; | |
596 | long size; | |
597 | int fixed_p; | |
598 | }; | |
599 | ||
600 | /* Compute the current size of a read/write packet. Since this makes | |
601 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
602 | ||
603 | static long | |
604 | get_memory_packet_size (struct memory_packet_config *config) | |
605 | { | |
d01949b6 | 606 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
607 | struct remote_arch_state *rsa = get_remote_arch_state (); |
608 | ||
11cf8741 JM |
609 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk |
610 | law?) that some hosts don't cope very well with large alloca() | |
611 | calls. Eventually the alloca() code will be replaced by calls to | |
612 | xmalloc() and make_cleanups() allowing this restriction to either | |
23860348 | 613 | be lifted or removed. */ |
11cf8741 JM |
614 | #ifndef MAX_REMOTE_PACKET_SIZE |
615 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
616 | #endif | |
3de11b2e | 617 | /* NOTE: 20 ensures we can write at least one byte. */ |
11cf8741 | 618 | #ifndef MIN_REMOTE_PACKET_SIZE |
3de11b2e | 619 | #define MIN_REMOTE_PACKET_SIZE 20 |
11cf8741 JM |
620 | #endif |
621 | long what_they_get; | |
622 | if (config->fixed_p) | |
623 | { | |
624 | if (config->size <= 0) | |
625 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
626 | else | |
627 | what_they_get = config->size; | |
628 | } | |
629 | else | |
630 | { | |
ea9c271d | 631 | what_they_get = get_remote_packet_size (); |
23860348 | 632 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
633 | if (config->size > 0 |
634 | && what_they_get > config->size) | |
635 | what_they_get = config->size; | |
be2a5f71 DJ |
636 | |
637 | /* Limit it to the size of the targets ``g'' response unless we have | |
638 | permission from the stub to use a larger packet size. */ | |
639 | if (rs->explicit_packet_size == 0 | |
640 | && rsa->actual_register_packet_size > 0 | |
641 | && what_they_get > rsa->actual_register_packet_size) | |
642 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 JM |
643 | } |
644 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
645 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
646 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
647 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
6d820c5c DJ |
648 | |
649 | /* Make sure there is room in the global buffer for this packet | |
650 | (including its trailing NUL byte). */ | |
651 | if (rs->buf_size < what_they_get + 1) | |
652 | { | |
653 | rs->buf_size = 2 * what_they_get; | |
654 | rs->buf = xrealloc (rs->buf, 2 * what_they_get); | |
655 | } | |
656 | ||
11cf8741 JM |
657 | return what_they_get; |
658 | } | |
659 | ||
660 | /* Update the size of a read/write packet. If they user wants | |
23860348 | 661 | something really big then do a sanity check. */ |
11cf8741 JM |
662 | |
663 | static void | |
664 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
665 | { | |
666 | int fixed_p = config->fixed_p; | |
667 | long size = config->size; | |
668 | if (args == NULL) | |
8a3fe4f8 | 669 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
670 | else if (strcmp (args, "hard") == 0 |
671 | || strcmp (args, "fixed") == 0) | |
672 | fixed_p = 1; | |
673 | else if (strcmp (args, "soft") == 0 | |
674 | || strcmp (args, "limit") == 0) | |
675 | fixed_p = 0; | |
676 | else | |
677 | { | |
678 | char *end; | |
679 | size = strtoul (args, &end, 0); | |
680 | if (args == end) | |
8a3fe4f8 | 681 | error (_("Invalid %s (bad syntax)."), config->name); |
11cf8741 JM |
682 | #if 0 |
683 | /* Instead of explicitly capping the size of a packet to | |
684 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
685 | instead allowed to set the size to something arbitrarily | |
23860348 | 686 | large. */ |
11cf8741 | 687 | if (size > MAX_REMOTE_PACKET_SIZE) |
8a3fe4f8 | 688 | error (_("Invalid %s (too large)."), config->name); |
11cf8741 JM |
689 | #endif |
690 | } | |
23860348 | 691 | /* Extra checks? */ |
11cf8741 JM |
692 | if (fixed_p && !config->fixed_p) |
693 | { | |
e2e0b3e5 AC |
694 | if (! query (_("The target may not be able to correctly handle a %s\n" |
695 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 696 | config->name, size)) |
8a3fe4f8 | 697 | error (_("Packet size not changed.")); |
11cf8741 | 698 | } |
23860348 | 699 | /* Update the config. */ |
11cf8741 JM |
700 | config->fixed_p = fixed_p; |
701 | config->size = size; | |
702 | } | |
703 | ||
704 | static void | |
705 | show_memory_packet_size (struct memory_packet_config *config) | |
706 | { | |
a3f17187 | 707 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 708 | if (config->fixed_p) |
a3f17187 | 709 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
710 | get_memory_packet_size (config)); |
711 | else | |
a3f17187 | 712 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
713 | get_memory_packet_size (config)); |
714 | } | |
715 | ||
716 | static struct memory_packet_config memory_write_packet_config = | |
717 | { | |
718 | "memory-write-packet-size", | |
719 | }; | |
720 | ||
721 | static void | |
722 | set_memory_write_packet_size (char *args, int from_tty) | |
723 | { | |
724 | set_memory_packet_size (args, &memory_write_packet_config); | |
725 | } | |
726 | ||
727 | static void | |
728 | show_memory_write_packet_size (char *args, int from_tty) | |
729 | { | |
730 | show_memory_packet_size (&memory_write_packet_config); | |
731 | } | |
732 | ||
733 | static long | |
734 | get_memory_write_packet_size (void) | |
735 | { | |
736 | return get_memory_packet_size (&memory_write_packet_config); | |
737 | } | |
738 | ||
739 | static struct memory_packet_config memory_read_packet_config = | |
740 | { | |
741 | "memory-read-packet-size", | |
742 | }; | |
743 | ||
744 | static void | |
745 | set_memory_read_packet_size (char *args, int from_tty) | |
746 | { | |
747 | set_memory_packet_size (args, &memory_read_packet_config); | |
748 | } | |
749 | ||
750 | static void | |
751 | show_memory_read_packet_size (char *args, int from_tty) | |
752 | { | |
753 | show_memory_packet_size (&memory_read_packet_config); | |
754 | } | |
755 | ||
756 | static long | |
757 | get_memory_read_packet_size (void) | |
758 | { | |
759 | long size = get_memory_packet_size (&memory_read_packet_config); | |
760 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an | |
761 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
762 | increased beyond this. */ |
763 | if (size > get_remote_packet_size ()) | |
764 | size = get_remote_packet_size (); | |
11cf8741 JM |
765 | return size; |
766 | } | |
767 | ||
11cf8741 | 768 | \f |
5a2468f5 JM |
769 | /* Generic configuration support for packets the stub optionally |
770 | supports. Allows the user to specify the use of the packet as well | |
23860348 | 771 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
772 | |
773 | enum packet_support | |
774 | { | |
775 | PACKET_SUPPORT_UNKNOWN = 0, | |
776 | PACKET_ENABLE, | |
777 | PACKET_DISABLE | |
778 | }; | |
779 | ||
5a2468f5 JM |
780 | struct packet_config |
781 | { | |
bb572ddd DJ |
782 | const char *name; |
783 | const char *title; | |
7f19b9a2 | 784 | enum auto_boolean detect; |
5a2468f5 JM |
785 | enum packet_support support; |
786 | }; | |
787 | ||
d471ea57 | 788 | /* Analyze a packet's return value and update the packet config |
23860348 | 789 | accordingly. */ |
d471ea57 AC |
790 | |
791 | enum packet_result | |
792 | { | |
793 | PACKET_ERROR, | |
794 | PACKET_OK, | |
795 | PACKET_UNKNOWN | |
796 | }; | |
797 | ||
5a2468f5 | 798 | static void |
d471ea57 | 799 | update_packet_config (struct packet_config *config) |
5a2468f5 | 800 | { |
d471ea57 AC |
801 | switch (config->detect) |
802 | { | |
7f19b9a2 | 803 | case AUTO_BOOLEAN_TRUE: |
d471ea57 AC |
804 | config->support = PACKET_ENABLE; |
805 | break; | |
7f19b9a2 | 806 | case AUTO_BOOLEAN_FALSE: |
d471ea57 AC |
807 | config->support = PACKET_DISABLE; |
808 | break; | |
7f19b9a2 | 809 | case AUTO_BOOLEAN_AUTO: |
d471ea57 AC |
810 | config->support = PACKET_SUPPORT_UNKNOWN; |
811 | break; | |
812 | } | |
5a2468f5 JM |
813 | } |
814 | ||
815 | static void | |
fba45db2 | 816 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
817 | { |
818 | char *support = "internal-error"; | |
819 | switch (config->support) | |
820 | { | |
821 | case PACKET_ENABLE: | |
822 | support = "enabled"; | |
823 | break; | |
824 | case PACKET_DISABLE: | |
825 | support = "disabled"; | |
826 | break; | |
827 | case PACKET_SUPPORT_UNKNOWN: | |
828 | support = "unknown"; | |
829 | break; | |
830 | } | |
831 | switch (config->detect) | |
832 | { | |
7f19b9a2 | 833 | case AUTO_BOOLEAN_AUTO: |
37a105a1 DJ |
834 | printf_filtered (_("Support for the `%s' packet is auto-detected, currently %s.\n"), |
835 | config->name, support); | |
5a2468f5 | 836 | break; |
7f19b9a2 AC |
837 | case AUTO_BOOLEAN_TRUE: |
838 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
839 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
840 | config->name, support); | |
8e248173 | 841 | break; |
5a2468f5 JM |
842 | } |
843 | } | |
844 | ||
845 | static void | |
bb572ddd DJ |
846 | add_packet_config_cmd (struct packet_config *config, const char *name, |
847 | const char *title, int legacy) | |
d471ea57 | 848 | { |
5a2468f5 JM |
849 | char *set_doc; |
850 | char *show_doc; | |
d471ea57 | 851 | char *cmd_name; |
3ed07be4 | 852 | |
5a2468f5 JM |
853 | config->name = name; |
854 | config->title = title; | |
7f19b9a2 | 855 | config->detect = AUTO_BOOLEAN_AUTO; |
8e248173 | 856 | config->support = PACKET_SUPPORT_UNKNOWN; |
b435e160 AC |
857 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
858 | name, title); | |
859 | show_doc = xstrprintf ("Show current use of remote protocol `%s' (%s) packet", | |
860 | name, title); | |
d471ea57 | 861 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 862 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 863 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
2c5b56ce | 864 | &config->detect, set_doc, show_doc, NULL, /* help_doc */ |
bb572ddd DJ |
865 | set_remote_protocol_packet_cmd, |
866 | show_remote_protocol_packet_cmd, | |
867 | &remote_set_cmdlist, &remote_show_cmdlist); | |
23860348 | 868 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
869 | if (legacy) |
870 | { | |
871 | char *legacy_name; | |
b435e160 | 872 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 873 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 874 | &remote_set_cmdlist); |
d471ea57 | 875 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 876 | &remote_show_cmdlist); |
d471ea57 | 877 | } |
5a2468f5 JM |
878 | } |
879 | ||
d471ea57 | 880 | static enum packet_result |
a76d924d | 881 | packet_check_result (const char *buf) |
5a2468f5 | 882 | { |
d471ea57 | 883 | if (buf[0] != '\0') |
5a2468f5 | 884 | { |
d471ea57 | 885 | /* The stub recognized the packet request. Check that the |
23860348 | 886 | operation succeeded. */ |
a76d924d DJ |
887 | if (buf[0] == 'E' |
888 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
889 | && buf[3] == '\0') | |
890 | /* "Enn" - definitly an error. */ | |
891 | return PACKET_ERROR; | |
892 | ||
893 | /* Always treat "E." as an error. This will be used for | |
894 | more verbose error messages, such as E.memtypes. */ | |
895 | if (buf[0] == 'E' && buf[1] == '.') | |
896 | return PACKET_ERROR; | |
897 | ||
898 | /* The packet may or may not be OK. Just assume it is. */ | |
899 | return PACKET_OK; | |
900 | } | |
901 | else | |
902 | /* The stub does not support the packet. */ | |
903 | return PACKET_UNKNOWN; | |
904 | } | |
905 | ||
906 | static enum packet_result | |
907 | packet_ok (const char *buf, struct packet_config *config) | |
908 | { | |
909 | enum packet_result result; | |
910 | ||
911 | result = packet_check_result (buf); | |
912 | switch (result) | |
913 | { | |
914 | case PACKET_OK: | |
915 | case PACKET_ERROR: | |
916 | /* The stub recognized the packet request. */ | |
d471ea57 AC |
917 | switch (config->support) |
918 | { | |
919 | case PACKET_SUPPORT_UNKNOWN: | |
920 | if (remote_debug) | |
921 | fprintf_unfiltered (gdb_stdlog, | |
922 | "Packet %s (%s) is supported\n", | |
923 | config->name, config->title); | |
924 | config->support = PACKET_ENABLE; | |
925 | break; | |
926 | case PACKET_DISABLE: | |
8e65ff28 | 927 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 928 | _("packet_ok: attempt to use a disabled packet")); |
d471ea57 AC |
929 | break; |
930 | case PACKET_ENABLE: | |
931 | break; | |
932 | } | |
a76d924d DJ |
933 | break; |
934 | case PACKET_UNKNOWN: | |
23860348 | 935 | /* The stub does not support the packet. */ |
d471ea57 AC |
936 | switch (config->support) |
937 | { | |
938 | case PACKET_ENABLE: | |
7f19b9a2 | 939 | if (config->detect == AUTO_BOOLEAN_AUTO) |
d471ea57 | 940 | /* If the stub previously indicated that the packet was |
23860348 | 941 | supported then there is a protocol error.. */ |
8a3fe4f8 | 942 | error (_("Protocol error: %s (%s) conflicting enabled responses."), |
d471ea57 AC |
943 | config->name, config->title); |
944 | else | |
23860348 | 945 | /* The user set it wrong. */ |
8a3fe4f8 | 946 | error (_("Enabled packet %s (%s) not recognized by stub"), |
d471ea57 AC |
947 | config->name, config->title); |
948 | break; | |
949 | case PACKET_SUPPORT_UNKNOWN: | |
950 | if (remote_debug) | |
951 | fprintf_unfiltered (gdb_stdlog, | |
952 | "Packet %s (%s) is NOT supported\n", | |
953 | config->name, config->title); | |
954 | config->support = PACKET_DISABLE; | |
955 | break; | |
956 | case PACKET_DISABLE: | |
957 | break; | |
958 | } | |
a76d924d | 959 | break; |
5a2468f5 | 960 | } |
a76d924d DJ |
961 | |
962 | return result; | |
5a2468f5 JM |
963 | } |
964 | ||
444abaca DJ |
965 | enum { |
966 | PACKET_vCont = 0, | |
967 | PACKET_X, | |
968 | PACKET_qSymbol, | |
969 | PACKET_P, | |
970 | PACKET_p, | |
971 | PACKET_Z0, | |
972 | PACKET_Z1, | |
973 | PACKET_Z2, | |
974 | PACKET_Z3, | |
975 | PACKET_Z4, | |
a6b151f1 DJ |
976 | PACKET_vFile_open, |
977 | PACKET_vFile_pread, | |
978 | PACKET_vFile_pwrite, | |
979 | PACKET_vFile_close, | |
980 | PACKET_vFile_unlink, | |
0876f84a | 981 | PACKET_qXfer_auxv, |
23181151 | 982 | PACKET_qXfer_features, |
cfa9d6d9 | 983 | PACKET_qXfer_libraries, |
fd79ecee | 984 | PACKET_qXfer_memory_map, |
0e7f50da UW |
985 | PACKET_qXfer_spu_read, |
986 | PACKET_qXfer_spu_write, | |
07e059b5 | 987 | PACKET_qXfer_osdata, |
444abaca | 988 | PACKET_qGetTLSAddr, |
be2a5f71 | 989 | PACKET_qSupported, |
89be2091 | 990 | PACKET_QPassSignals, |
08388c79 | 991 | PACKET_qSearch_memory, |
2d717e4f DJ |
992 | PACKET_vAttach, |
993 | PACKET_vRun, | |
a6f3e723 | 994 | PACKET_QStartNoAckMode, |
82f73884 | 995 | PACKET_vKill, |
4aa995e1 PA |
996 | PACKET_qXfer_siginfo_read, |
997 | PACKET_qXfer_siginfo_write, | |
0b16c5cf | 998 | PACKET_qAttached, |
782b2b07 | 999 | PACKET_ConditionalTracepoints, |
444abaca DJ |
1000 | PACKET_MAX |
1001 | }; | |
506fb367 | 1002 | |
444abaca | 1003 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 MS |
1004 | |
1005 | static void | |
444abaca DJ |
1006 | set_remote_protocol_packet_cmd (char *args, int from_tty, |
1007 | struct cmd_list_element *c) | |
dc8acb97 | 1008 | { |
444abaca | 1009 | struct packet_config *packet; |
dc8acb97 | 1010 | |
444abaca DJ |
1011 | for (packet = remote_protocol_packets; |
1012 | packet < &remote_protocol_packets[PACKET_MAX]; | |
1013 | packet++) | |
1014 | { | |
1015 | if (&packet->detect == c->var) | |
1016 | { | |
1017 | update_packet_config (packet); | |
1018 | return; | |
1019 | } | |
1020 | } | |
1021 | internal_error (__FILE__, __LINE__, "Could not find config for %s", | |
1022 | c->name); | |
dc8acb97 MS |
1023 | } |
1024 | ||
5a2468f5 | 1025 | static void |
444abaca DJ |
1026 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
1027 | struct cmd_list_element *c, | |
1028 | const char *value) | |
5a2468f5 | 1029 | { |
444abaca | 1030 | struct packet_config *packet; |
5a2468f5 | 1031 | |
444abaca DJ |
1032 | for (packet = remote_protocol_packets; |
1033 | packet < &remote_protocol_packets[PACKET_MAX]; | |
1034 | packet++) | |
1035 | { | |
1036 | if (&packet->detect == c->var) | |
1037 | { | |
1038 | show_packet_config_cmd (packet); | |
1039 | return; | |
1040 | } | |
1041 | } | |
1042 | internal_error (__FILE__, __LINE__, "Could not find config for %s", | |
1043 | c->name); | |
5a2468f5 JM |
1044 | } |
1045 | ||
d471ea57 AC |
1046 | /* Should we try one of the 'Z' requests? */ |
1047 | ||
1048 | enum Z_packet_type | |
1049 | { | |
1050 | Z_PACKET_SOFTWARE_BP, | |
1051 | Z_PACKET_HARDWARE_BP, | |
1052 | Z_PACKET_WRITE_WP, | |
1053 | Z_PACKET_READ_WP, | |
1054 | Z_PACKET_ACCESS_WP, | |
1055 | NR_Z_PACKET_TYPES | |
1056 | }; | |
96baa820 | 1057 | |
d471ea57 | 1058 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 1059 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 1060 | |
7f19b9a2 | 1061 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
1062 | |
1063 | static void | |
fba45db2 KB |
1064 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
1065 | struct cmd_list_element *c) | |
96baa820 | 1066 | { |
d471ea57 AC |
1067 | int i; |
1068 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
1069 | { | |
444abaca DJ |
1070 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
1071 | update_packet_config (&remote_protocol_packets[PACKET_Z0 + i]); | |
d471ea57 | 1072 | } |
96baa820 JM |
1073 | } |
1074 | ||
1075 | static void | |
08546159 AC |
1076 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
1077 | struct cmd_list_element *c, | |
1078 | const char *value) | |
96baa820 | 1079 | { |
d471ea57 AC |
1080 | int i; |
1081 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
1082 | { | |
444abaca | 1083 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 1084 | } |
96baa820 JM |
1085 | } |
1086 | ||
9d1f7ab2 MS |
1087 | /* Should we try the 'ThreadInfo' query packet? |
1088 | ||
1089 | This variable (NOT available to the user: auto-detect only!) | |
1090 | determines whether GDB will use the new, simpler "ThreadInfo" | |
1091 | query or the older, more complex syntax for thread queries. | |
802188a7 | 1092 | This is an auto-detect variable (set to true at each connect, |
9d1f7ab2 MS |
1093 | and set to false when the target fails to recognize it). */ |
1094 | ||
1095 | static int use_threadinfo_query; | |
1096 | static int use_threadextra_query; | |
1097 | ||
23860348 | 1098 | /* Tokens for use by the asynchronous signal handlers for SIGINT. */ |
d5d6fca5 DJ |
1099 | static struct async_signal_handler *sigint_remote_twice_token; |
1100 | static struct async_signal_handler *sigint_remote_token; | |
43ff13b4 | 1101 | |
74531fed PA |
1102 | \f |
1103 | /* Asynchronous signal handle registered as event loop source for | |
1104 | when we have pending events ready to be passed to the core. */ | |
1105 | ||
1106 | static struct async_event_handler *remote_async_inferior_event_token; | |
1107 | ||
1108 | /* Asynchronous signal handle registered as event loop source for when | |
1109 | the remote sent us a %Stop notification. The registered callback | |
1110 | will do a vStopped sequence to pull the rest of the events out of | |
1111 | the remote side into our event queue. */ | |
1112 | ||
1113 | static struct async_event_handler *remote_async_get_pending_events_token; | |
c906108c SS |
1114 | \f |
1115 | ||
79d7f229 PA |
1116 | static ptid_t magic_null_ptid; |
1117 | static ptid_t not_sent_ptid; | |
1118 | static ptid_t any_thread_ptid; | |
1119 | ||
1120 | /* These are the threads which we last sent to the remote system. The | |
1121 | TID member will be -1 for all or -2 for not sent yet. */ | |
1122 | ||
1123 | static ptid_t general_thread; | |
1124 | static ptid_t continue_thread; | |
c5aa993b | 1125 | |
0b16c5cf PA |
1126 | /* Find out if the stub attached to PID (and hence GDB should offer to |
1127 | detach instead of killing it when bailing out). */ | |
1128 | ||
1129 | static int | |
1130 | remote_query_attached (int pid) | |
1131 | { | |
1132 | struct remote_state *rs = get_remote_state (); | |
1133 | ||
1134 | if (remote_protocol_packets[PACKET_qAttached].support == PACKET_DISABLE) | |
1135 | return 0; | |
1136 | ||
1137 | if (remote_multi_process_p (rs)) | |
1138 | sprintf (rs->buf, "qAttached:%x", pid); | |
1139 | else | |
1140 | sprintf (rs->buf, "qAttached"); | |
1141 | ||
1142 | putpkt (rs->buf); | |
1143 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1144 | ||
1145 | switch (packet_ok (rs->buf, | |
1554e9be | 1146 | &remote_protocol_packets[PACKET_qAttached])) |
0b16c5cf PA |
1147 | { |
1148 | case PACKET_OK: | |
1149 | if (strcmp (rs->buf, "1") == 0) | |
1150 | return 1; | |
1151 | break; | |
1152 | case PACKET_ERROR: | |
1153 | warning (_("Remote failure reply: %s"), rs->buf); | |
1154 | break; | |
1155 | case PACKET_UNKNOWN: | |
1156 | break; | |
1157 | } | |
1158 | ||
1159 | return 0; | |
1160 | } | |
1161 | ||
1941c569 PA |
1162 | /* Add PID to GDB's inferior table. Since we can be connected to a |
1163 | remote system before before knowing about any inferior, mark the | |
0b16c5cf PA |
1164 | target with execution when we find the first inferior. If ATTACHED |
1165 | is 1, then we had just attached to this inferior. If it is 0, then | |
1166 | we just created this inferior. If it is -1, then try querying the | |
1167 | remote stub to find out if it had attached to the inferior or | |
1168 | not. */ | |
1941c569 PA |
1169 | |
1170 | static struct inferior * | |
0b16c5cf | 1171 | remote_add_inferior (int pid, int attached) |
1941c569 PA |
1172 | { |
1173 | struct remote_state *rs = get_remote_state (); | |
1174 | struct inferior *inf; | |
1175 | ||
0b16c5cf PA |
1176 | /* Check whether this process we're learning about is to be |
1177 | considered attached, or if is to be considered to have been | |
1178 | spawned by the stub. */ | |
1179 | if (attached == -1) | |
1180 | attached = remote_query_attached (pid); | |
1181 | ||
1941c569 PA |
1182 | inf = add_inferior (pid); |
1183 | ||
0b16c5cf PA |
1184 | inf->attach_flag = attached; |
1185 | ||
1941c569 PA |
1186 | return inf; |
1187 | } | |
1188 | ||
1189 | /* Add thread PTID to GDB's thread list. Tag it as executing/running | |
1190 | according to RUNNING. */ | |
1191 | ||
c906108c | 1192 | static void |
1941c569 | 1193 | remote_add_thread (ptid_t ptid, int running) |
c906108c | 1194 | { |
1941c569 PA |
1195 | add_thread (ptid); |
1196 | ||
1197 | set_executing (ptid, running); | |
1198 | set_running (ptid, running); | |
1199 | } | |
1200 | ||
1201 | /* Come here when we learn about a thread id from the remote target. | |
1202 | It may be the first time we hear about such thread, so take the | |
1203 | opportunity to add it to GDB's thread list. In case this is the | |
1204 | first time we're noticing its corresponding inferior, add it to | |
1205 | GDB's inferior list as well. */ | |
1206 | ||
1207 | static void | |
1208 | remote_notice_new_inferior (ptid_t currthread, int running) | |
1209 | { | |
1210 | struct remote_state *rs = get_remote_state (); | |
1211 | ||
c906108c SS |
1212 | /* If this is a new thread, add it to GDB's thread list. |
1213 | If we leave it up to WFI to do this, bad things will happen. */ | |
82f73884 PA |
1214 | |
1215 | if (in_thread_list (currthread) && is_exited (currthread)) | |
1216 | { | |
1217 | /* We're seeing an event on a thread id we knew had exited. | |
1218 | This has to be a new thread reusing the old id. Add it. */ | |
1941c569 | 1219 | remote_add_thread (currthread, running); |
82f73884 PA |
1220 | return; |
1221 | } | |
1222 | ||
79d7f229 | 1223 | if (!in_thread_list (currthread)) |
c0a2216e | 1224 | { |
1941c569 | 1225 | struct inferior *inf = NULL; |
bad34192 | 1226 | int pid = ptid_get_pid (currthread); |
1941c569 | 1227 | |
bad34192 PA |
1228 | if (ptid_is_pid (inferior_ptid) |
1229 | && pid == ptid_get_pid (inferior_ptid)) | |
c0a2216e PA |
1230 | { |
1231 | /* inferior_ptid has no thread member yet. This can happen | |
1232 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
1233 | stub doesn't support qC. This is the first stop reported | |
1234 | after an attach, so this is the main thread. Update the | |
1235 | ptid in the thread list. */ | |
bad34192 PA |
1236 | if (in_thread_list (pid_to_ptid (pid))) |
1237 | thread_change_ptid (inferior_ptid, currthread); | |
1238 | else | |
1239 | { | |
1240 | remote_add_thread (currthread, running); | |
1241 | inferior_ptid = currthread; | |
1242 | } | |
82f73884 | 1243 | return; |
c0a2216e | 1244 | } |
82f73884 PA |
1245 | |
1246 | if (ptid_equal (magic_null_ptid, inferior_ptid)) | |
c0a2216e PA |
1247 | { |
1248 | /* inferior_ptid is not set yet. This can happen with the | |
1249 | vRun -> remote_wait,"TAAthread:" path if the stub | |
1250 | doesn't support qC. This is the first stop reported | |
1251 | after an attach, so this is the main thread. Update the | |
1252 | ptid in the thread list. */ | |
82f73884 PA |
1253 | thread_change_ptid (inferior_ptid, currthread); |
1254 | return; | |
c0a2216e | 1255 | } |
82f73884 | 1256 | |
29c87f7f PA |
1257 | /* When connecting to a target remote, or to a target |
1258 | extended-remote which already was debugging an inferior, we | |
1259 | may not know about it yet. Add it before adding its child | |
1260 | thread, so notifications are emitted in a sensible order. */ | |
1261 | if (!in_inferior_list (ptid_get_pid (currthread))) | |
0b16c5cf | 1262 | inf = remote_add_inferior (ptid_get_pid (currthread), -1); |
29c87f7f | 1263 | |
82f73884 | 1264 | /* This is really a new thread. Add it. */ |
1941c569 PA |
1265 | remote_add_thread (currthread, running); |
1266 | ||
1267 | /* If we found a new inferior, let the common code do whatever | |
1268 | it needs to with it (e.g., read shared libraries, insert | |
1269 | breakpoints). */ | |
1270 | if (inf != NULL) | |
1271 | notice_new_inferior (currthread, running, 0); | |
c0a2216e | 1272 | } |
c906108c SS |
1273 | } |
1274 | ||
74531fed PA |
1275 | /* Call this function as a result of |
1276 | 1) A halt indication (T packet) containing a thread id | |
1277 | 2) A direct query of currthread | |
1278 | 3) Successful execution of set thread | |
1279 | */ | |
1280 | ||
1281 | static void | |
1282 | record_currthread (ptid_t currthread) | |
1283 | { | |
1284 | general_thread = currthread; | |
1285 | ||
1286 | if (ptid_equal (currthread, minus_one_ptid)) | |
1287 | /* We're just invalidating the local thread mirror. */ | |
1288 | return; | |
1289 | ||
1941c569 | 1290 | remote_notice_new_inferior (currthread, 0); |
74531fed PA |
1291 | } |
1292 | ||
89be2091 DJ |
1293 | static char *last_pass_packet; |
1294 | ||
1295 | /* If 'QPassSignals' is supported, tell the remote stub what signals | |
1296 | it can simply pass through to the inferior without reporting. */ | |
1297 | ||
1298 | static void | |
1299 | remote_pass_signals (void) | |
1300 | { | |
1301 | if (remote_protocol_packets[PACKET_QPassSignals].support != PACKET_DISABLE) | |
1302 | { | |
1303 | char *pass_packet, *p; | |
1304 | int numsigs = (int) TARGET_SIGNAL_LAST; | |
1305 | int count = 0, i; | |
1306 | ||
1307 | gdb_assert (numsigs < 256); | |
1308 | for (i = 0; i < numsigs; i++) | |
1309 | { | |
1310 | if (signal_stop_state (i) == 0 | |
1311 | && signal_print_state (i) == 0 | |
1312 | && signal_pass_state (i) == 1) | |
1313 | count++; | |
1314 | } | |
1315 | pass_packet = xmalloc (count * 3 + strlen ("QPassSignals:") + 1); | |
1316 | strcpy (pass_packet, "QPassSignals:"); | |
1317 | p = pass_packet + strlen (pass_packet); | |
1318 | for (i = 0; i < numsigs; i++) | |
1319 | { | |
1320 | if (signal_stop_state (i) == 0 | |
1321 | && signal_print_state (i) == 0 | |
1322 | && signal_pass_state (i) == 1) | |
1323 | { | |
1324 | if (i >= 16) | |
1325 | *p++ = tohex (i >> 4); | |
1326 | *p++ = tohex (i & 15); | |
1327 | if (count) | |
1328 | *p++ = ';'; | |
1329 | else | |
1330 | break; | |
1331 | count--; | |
1332 | } | |
1333 | } | |
1334 | *p = 0; | |
1335 | if (!last_pass_packet || strcmp (last_pass_packet, pass_packet)) | |
1336 | { | |
1337 | struct remote_state *rs = get_remote_state (); | |
1338 | char *buf = rs->buf; | |
1339 | ||
1340 | putpkt (pass_packet); | |
1341 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1342 | packet_ok (buf, &remote_protocol_packets[PACKET_QPassSignals]); | |
1343 | if (last_pass_packet) | |
1344 | xfree (last_pass_packet); | |
1345 | last_pass_packet = pass_packet; | |
1346 | } | |
1347 | else | |
1348 | xfree (pass_packet); | |
1349 | } | |
1350 | } | |
1351 | ||
79d7f229 PA |
1352 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
1353 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
1354 | thread. If GEN is set, set the general thread, if not, then set | |
1355 | the step/continue thread. */ | |
c906108c | 1356 | static void |
79d7f229 | 1357 | set_thread (struct ptid ptid, int gen) |
c906108c | 1358 | { |
d01949b6 | 1359 | struct remote_state *rs = get_remote_state (); |
79d7f229 | 1360 | ptid_t state = gen ? general_thread : continue_thread; |
6d820c5c | 1361 | char *buf = rs->buf; |
79d7f229 | 1362 | char *endbuf = rs->buf + get_remote_packet_size (); |
c906108c | 1363 | |
79d7f229 | 1364 | if (ptid_equal (state, ptid)) |
c906108c SS |
1365 | return; |
1366 | ||
79d7f229 PA |
1367 | *buf++ = 'H'; |
1368 | *buf++ = gen ? 'g' : 'c'; | |
1369 | if (ptid_equal (ptid, magic_null_ptid)) | |
1370 | xsnprintf (buf, endbuf - buf, "0"); | |
1371 | else if (ptid_equal (ptid, any_thread_ptid)) | |
1372 | xsnprintf (buf, endbuf - buf, "0"); | |
1373 | else if (ptid_equal (ptid, minus_one_ptid)) | |
1374 | xsnprintf (buf, endbuf - buf, "-1"); | |
1375 | else | |
82f73884 | 1376 | write_ptid (buf, endbuf, ptid); |
79d7f229 | 1377 | putpkt (rs->buf); |
6d820c5c | 1378 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 1379 | if (gen) |
79d7f229 | 1380 | general_thread = ptid; |
c906108c | 1381 | else |
79d7f229 | 1382 | continue_thread = ptid; |
c906108c | 1383 | } |
79d7f229 PA |
1384 | |
1385 | static void | |
1386 | set_general_thread (struct ptid ptid) | |
1387 | { | |
1388 | set_thread (ptid, 1); | |
1389 | } | |
1390 | ||
1391 | static void | |
1392 | set_continue_thread (struct ptid ptid) | |
1393 | { | |
1394 | set_thread (ptid, 0); | |
1395 | } | |
1396 | ||
3c9c4b83 PA |
1397 | /* Change the remote current process. Which thread within the process |
1398 | ends up selected isn't important, as long as it is the same process | |
1399 | as what INFERIOR_PTID points to. | |
1400 | ||
1401 | This comes from that fact that there is no explicit notion of | |
1402 | "selected process" in the protocol. The selected process for | |
1403 | general operations is the process the selected general thread | |
1404 | belongs to. */ | |
1405 | ||
1406 | static void | |
1407 | set_general_process (void) | |
1408 | { | |
1409 | struct remote_state *rs = get_remote_state (); | |
1410 | ||
1411 | /* If the remote can't handle multiple processes, don't bother. */ | |
1412 | if (!remote_multi_process_p (rs)) | |
1413 | return; | |
1414 | ||
1415 | /* We only need to change the remote current thread if it's pointing | |
1416 | at some other process. */ | |
1417 | if (ptid_get_pid (general_thread) != ptid_get_pid (inferior_ptid)) | |
1418 | set_general_thread (inferior_ptid); | |
1419 | } | |
1420 | ||
c906108c | 1421 | \f |
79d7f229 PA |
1422 | /* Return nonzero if the thread PTID is still alive on the remote |
1423 | system. */ | |
c906108c SS |
1424 | |
1425 | static int | |
28439f5e | 1426 | remote_thread_alive (struct target_ops *ops, ptid_t ptid) |
c906108c | 1427 | { |
6d820c5c | 1428 | struct remote_state *rs = get_remote_state (); |
79d7f229 | 1429 | int tid = ptid_get_tid (ptid); |
82f73884 | 1430 | char *p, *endp; |
c906108c | 1431 | |
c0a2216e PA |
1432 | if (ptid_equal (ptid, magic_null_ptid)) |
1433 | /* The main thread is always alive. */ | |
1434 | return 1; | |
1435 | ||
1436 | if (ptid_get_pid (ptid) != 0 && ptid_get_tid (ptid) == 0) | |
1437 | /* The main thread is always alive. This can happen after a | |
1438 | vAttach, if the remote side doesn't support | |
1439 | multi-threading. */ | |
1440 | return 1; | |
1441 | ||
82f73884 PA |
1442 | p = rs->buf; |
1443 | endp = rs->buf + get_remote_packet_size (); | |
1444 | ||
1445 | *p++ = 'T'; | |
1446 | write_ptid (p, endp, ptid); | |
1447 | ||
2e9f7625 | 1448 | putpkt (rs->buf); |
6d820c5c | 1449 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1450 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
1451 | } |
1452 | ||
1453 | /* About these extended threadlist and threadinfo packets. They are | |
1454 | variable length packets but, the fields within them are often fixed | |
1455 | length. They are redundent enough to send over UDP as is the | |
1456 | remote protocol in general. There is a matching unit test module | |
1457 | in libstub. */ | |
1458 | ||
cce74817 JM |
1459 | #define OPAQUETHREADBYTES 8 |
1460 | ||
1461 | /* a 64 bit opaque identifier */ | |
1462 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
1463 | ||
23860348 MS |
1464 | /* WARNING: This threadref data structure comes from the remote O.S., |
1465 | libstub protocol encoding, and remote.c. it is not particularly | |
1466 | changable. */ | |
cce74817 JM |
1467 | |
1468 | /* Right now, the internal structure is int. We want it to be bigger. | |
1469 | Plan to fix this. | |
c5aa993b | 1470 | */ |
cce74817 | 1471 | |
23860348 | 1472 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 1473 | |
9d1f7ab2 | 1474 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 1475 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
1476 | |
1477 | struct gdb_ext_thread_info | |
c5aa993b | 1478 | { |
23860348 | 1479 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 1480 | int active; /* Has state interesting to GDB? |
23860348 | 1481 | regs, stack. */ |
2bc416ba | 1482 | char display[256]; /* Brief state display, name, |
cedea757 | 1483 | blocked/suspended. */ |
23860348 | 1484 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 1485 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 1486 | whatever. */ |
c5aa993b | 1487 | }; |
cce74817 JM |
1488 | |
1489 | /* The volume of remote transfers can be limited by submitting | |
1490 | a mask containing bits specifying the desired information. | |
1491 | Use a union of these values as the 'selection' parameter to | |
1492 | get_thread_info. FIXME: Make these TAG names more thread specific. | |
c5aa993b | 1493 | */ |
cce74817 JM |
1494 | |
1495 | #define TAG_THREADID 1 | |
1496 | #define TAG_EXISTS 2 | |
1497 | #define TAG_DISPLAY 4 | |
1498 | #define TAG_THREADNAME 8 | |
c5aa993b | 1499 | #define TAG_MOREDISPLAY 16 |
cce74817 | 1500 | |
23860348 | 1501 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 1502 | |
b2dd6311 | 1503 | char *unpack_varlen_hex (char *buff, ULONGEST *result); |
cce74817 | 1504 | |
a14ed312 | 1505 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 1506 | |
a14ed312 | 1507 | static char *pack_nibble (char *buf, int nibble); |
cce74817 | 1508 | |
23860348 | 1509 | static char *pack_hex_byte (char *pkt, int /* unsigned char */ byte); |
cce74817 | 1510 | |
a14ed312 | 1511 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 1512 | |
a14ed312 | 1513 | static char *pack_int (char *buf, int value); |
cce74817 | 1514 | |
a14ed312 | 1515 | static char *unpack_int (char *buf, int *value); |
cce74817 | 1516 | |
a14ed312 | 1517 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 1518 | |
23860348 | 1519 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 1520 | |
23860348 | 1521 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 1522 | |
23860348 | 1523 | void int_to_threadref (threadref *id, int value); |
cce74817 | 1524 | |
23860348 | 1525 | static int threadref_to_int (threadref *ref); |
cce74817 | 1526 | |
23860348 | 1527 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 1528 | |
23860348 | 1529 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 1530 | |
2bc416ba | 1531 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 1532 | threadref *id); |
cce74817 | 1533 | |
a14ed312 | 1534 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 1535 | threadref *expectedref, |
a14ed312 KB |
1536 | struct gdb_ext_thread_info |
1537 | *info); | |
cce74817 JM |
1538 | |
1539 | ||
2bc416ba | 1540 | static int remote_get_threadinfo (threadref *threadid, |
23860348 | 1541 | int fieldset, /*TAG mask */ |
a14ed312 | 1542 | struct gdb_ext_thread_info *info); |
cce74817 | 1543 | |
a14ed312 KB |
1544 | static char *pack_threadlist_request (char *pkt, int startflag, |
1545 | int threadcount, | |
23860348 | 1546 | threadref *nextthread); |
cce74817 | 1547 | |
a14ed312 KB |
1548 | static int parse_threadlist_response (char *pkt, |
1549 | int result_limit, | |
23860348 | 1550 | threadref *original_echo, |
2bc416ba | 1551 | threadref *resultlist, |
23860348 | 1552 | int *doneflag); |
cce74817 | 1553 | |
a14ed312 | 1554 | static int remote_get_threadlist (int startflag, |
23860348 | 1555 | threadref *nextthread, |
a14ed312 KB |
1556 | int result_limit, |
1557 | int *done, | |
2bc416ba | 1558 | int *result_count, |
23860348 | 1559 | threadref *threadlist); |
cce74817 | 1560 | |
23860348 | 1561 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 1562 | |
a14ed312 KB |
1563 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
1564 | void *context, int looplimit); | |
cce74817 | 1565 | |
23860348 | 1566 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 1567 | |
82f73884 PA |
1568 | |
1569 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
1570 | buffer we're allowed to write to. Returns | |
1571 | BUF+CHARACTERS_WRITTEN. */ | |
1572 | ||
1573 | static char * | |
1574 | write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
1575 | { | |
1576 | int pid, tid; | |
1577 | struct remote_state *rs = get_remote_state (); | |
1578 | ||
1579 | if (remote_multi_process_p (rs)) | |
1580 | { | |
1581 | pid = ptid_get_pid (ptid); | |
1582 | if (pid < 0) | |
1583 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
1584 | else | |
1585 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
1586 | } | |
1587 | tid = ptid_get_tid (ptid); | |
1588 | if (tid < 0) | |
1589 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
1590 | else | |
1591 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
1592 | ||
1593 | return buf; | |
1594 | } | |
1595 | ||
1596 | /* Extract a PTID from BUF. If non-null, OBUF is set to the to one | |
1597 | passed the last parsed char. Returns null_ptid on error. */ | |
1598 | ||
1599 | static ptid_t | |
1600 | read_ptid (char *buf, char **obuf) | |
1601 | { | |
1602 | char *p = buf; | |
1603 | char *pp; | |
1604 | ULONGEST pid = 0, tid = 0; | |
1605 | ptid_t ptid; | |
1606 | ||
1607 | if (*p == 'p') | |
1608 | { | |
1609 | /* Multi-process ptid. */ | |
1610 | pp = unpack_varlen_hex (p + 1, &pid); | |
1611 | if (*pp != '.') | |
1612 | error (_("invalid remote ptid: %s\n"), p); | |
1613 | ||
1614 | p = pp; | |
1615 | pp = unpack_varlen_hex (p + 1, &tid); | |
1616 | if (obuf) | |
1617 | *obuf = pp; | |
1618 | return ptid_build (pid, 0, tid); | |
1619 | } | |
1620 | ||
1621 | /* No multi-process. Just a tid. */ | |
1622 | pp = unpack_varlen_hex (p, &tid); | |
1623 | ||
1624 | /* Since the stub is not sending a process id, then default to | |
ca19bf23 PA |
1625 | what's in inferior_ptid, unless it's null at this point. If so, |
1626 | then since there's no way to know the pid of the reported | |
1627 | threads, use the magic number. */ | |
1628 | if (ptid_equal (inferior_ptid, null_ptid)) | |
1629 | pid = ptid_get_pid (magic_null_ptid); | |
1630 | else | |
1631 | pid = ptid_get_pid (inferior_ptid); | |
82f73884 PA |
1632 | |
1633 | if (obuf) | |
1634 | *obuf = pp; | |
1635 | return ptid_build (pid, 0, tid); | |
1636 | } | |
1637 | ||
23860348 | 1638 | /* Encode 64 bits in 16 chars of hex. */ |
c906108c SS |
1639 | |
1640 | static const char hexchars[] = "0123456789abcdef"; | |
1641 | ||
1642 | static int | |
fba45db2 | 1643 | ishex (int ch, int *val) |
c906108c SS |
1644 | { |
1645 | if ((ch >= 'a') && (ch <= 'f')) | |
1646 | { | |
1647 | *val = ch - 'a' + 10; | |
1648 | return 1; | |
1649 | } | |
1650 | if ((ch >= 'A') && (ch <= 'F')) | |
1651 | { | |
1652 | *val = ch - 'A' + 10; | |
1653 | return 1; | |
1654 | } | |
1655 | if ((ch >= '0') && (ch <= '9')) | |
1656 | { | |
1657 | *val = ch - '0'; | |
1658 | return 1; | |
1659 | } | |
1660 | return 0; | |
1661 | } | |
1662 | ||
1663 | static int | |
fba45db2 | 1664 | stubhex (int ch) |
c906108c SS |
1665 | { |
1666 | if (ch >= 'a' && ch <= 'f') | |
1667 | return ch - 'a' + 10; | |
1668 | if (ch >= '0' && ch <= '9') | |
1669 | return ch - '0'; | |
1670 | if (ch >= 'A' && ch <= 'F') | |
1671 | return ch - 'A' + 10; | |
1672 | return -1; | |
1673 | } | |
1674 | ||
1675 | static int | |
fba45db2 | 1676 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
1677 | { |
1678 | int nibble; | |
1679 | int retval = 0; | |
1680 | ||
1681 | while (fieldlength) | |
1682 | { | |
1683 | nibble = stubhex (*buff++); | |
1684 | retval |= nibble; | |
1685 | fieldlength--; | |
1686 | if (fieldlength) | |
1687 | retval = retval << 4; | |
1688 | } | |
1689 | return retval; | |
1690 | } | |
1691 | ||
1692 | char * | |
fba45db2 | 1693 | unpack_varlen_hex (char *buff, /* packet to parse */ |
b2dd6311 | 1694 | ULONGEST *result) |
c906108c SS |
1695 | { |
1696 | int nibble; | |
d49c44d5 | 1697 | ULONGEST retval = 0; |
c906108c SS |
1698 | |
1699 | while (ishex (*buff, &nibble)) | |
1700 | { | |
1701 | buff++; | |
1702 | retval = retval << 4; | |
1703 | retval |= nibble & 0x0f; | |
1704 | } | |
1705 | *result = retval; | |
1706 | return buff; | |
1707 | } | |
1708 | ||
1709 | static char * | |
fba45db2 | 1710 | unpack_nibble (char *buf, int *val) |
c906108c | 1711 | { |
b7589f7d | 1712 | *val = fromhex (*buf++); |
c906108c SS |
1713 | return buf; |
1714 | } | |
1715 | ||
1716 | static char * | |
fba45db2 | 1717 | pack_nibble (char *buf, int nibble) |
c906108c SS |
1718 | { |
1719 | *buf++ = hexchars[(nibble & 0x0f)]; | |
1720 | return buf; | |
1721 | } | |
1722 | ||
1723 | static char * | |
fba45db2 | 1724 | pack_hex_byte (char *pkt, int byte) |
c906108c SS |
1725 | { |
1726 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
1727 | *pkt++ = hexchars[(byte & 0xf)]; | |
1728 | return pkt; | |
1729 | } | |
1730 | ||
1731 | static char * | |
fba45db2 | 1732 | unpack_byte (char *buf, int *value) |
c906108c SS |
1733 | { |
1734 | *value = stub_unpack_int (buf, 2); | |
1735 | return buf + 2; | |
1736 | } | |
1737 | ||
1738 | static char * | |
fba45db2 | 1739 | pack_int (char *buf, int value) |
c906108c SS |
1740 | { |
1741 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
1742 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
1743 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
1744 | buf = pack_hex_byte (buf, (value & 0xff)); | |
1745 | return buf; | |
1746 | } | |
1747 | ||
1748 | static char * | |
fba45db2 | 1749 | unpack_int (char *buf, int *value) |
c906108c SS |
1750 | { |
1751 | *value = stub_unpack_int (buf, 8); | |
1752 | return buf + 8; | |
1753 | } | |
1754 | ||
23860348 | 1755 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 1756 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
1757 | |
1758 | static char * | |
fba45db2 | 1759 | pack_string (char *pkt, char *string) |
c906108c SS |
1760 | { |
1761 | char ch; | |
1762 | int len; | |
1763 | ||
1764 | len = strlen (string); | |
1765 | if (len > 200) | |
23860348 | 1766 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
1767 | pkt = pack_hex_byte (pkt, len); |
1768 | while (len-- > 0) | |
1769 | { | |
1770 | ch = *string++; | |
1771 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 1772 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
1773 | *pkt++ = ch; |
1774 | } | |
1775 | return pkt; | |
1776 | } | |
1777 | #endif /* 0 (unused) */ | |
1778 | ||
1779 | static char * | |
fba45db2 | 1780 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
1781 | { |
1782 | while (length--) | |
1783 | *dest++ = *src++; | |
1784 | *dest = '\0'; | |
1785 | return src; | |
1786 | } | |
1787 | ||
1788 | static char * | |
fba45db2 | 1789 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
1790 | { |
1791 | char *limit; | |
1792 | unsigned char *altid; | |
1793 | ||
1794 | altid = (unsigned char *) id; | |
1795 | limit = pkt + BUF_THREAD_ID_SIZE; | |
1796 | while (pkt < limit) | |
1797 | pkt = pack_hex_byte (pkt, *altid++); | |
1798 | return pkt; | |
1799 | } | |
1800 | ||
1801 | ||
1802 | static char * | |
fba45db2 | 1803 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
1804 | { |
1805 | char *altref; | |
1806 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
1807 | int x, y; | |
1808 | ||
1809 | altref = (char *) id; | |
1810 | ||
1811 | while (inbuf < limit) | |
1812 | { | |
1813 | x = stubhex (*inbuf++); | |
1814 | y = stubhex (*inbuf++); | |
1815 | *altref++ = (x << 4) | y; | |
1816 | } | |
1817 | return inbuf; | |
1818 | } | |
1819 | ||
1820 | /* Externally, threadrefs are 64 bits but internally, they are still | |
1821 | ints. This is due to a mismatch of specifications. We would like | |
1822 | to use 64bit thread references internally. This is an adapter | |
1823 | function. */ | |
1824 | ||
1825 | void | |
fba45db2 | 1826 | int_to_threadref (threadref *id, int value) |
c906108c SS |
1827 | { |
1828 | unsigned char *scan; | |
1829 | ||
1830 | scan = (unsigned char *) id; | |
1831 | { | |
1832 | int i = 4; | |
1833 | while (i--) | |
1834 | *scan++ = 0; | |
1835 | } | |
1836 | *scan++ = (value >> 24) & 0xff; | |
1837 | *scan++ = (value >> 16) & 0xff; | |
1838 | *scan++ = (value >> 8) & 0xff; | |
1839 | *scan++ = (value & 0xff); | |
1840 | } | |
1841 | ||
1842 | static int | |
fba45db2 | 1843 | threadref_to_int (threadref *ref) |
c906108c SS |
1844 | { |
1845 | int i, value = 0; | |
1846 | unsigned char *scan; | |
1847 | ||
cfd77fa1 | 1848 | scan = *ref; |
c906108c SS |
1849 | scan += 4; |
1850 | i = 4; | |
1851 | while (i-- > 0) | |
1852 | value = (value << 8) | ((*scan++) & 0xff); | |
1853 | return value; | |
1854 | } | |
1855 | ||
1856 | static void | |
fba45db2 | 1857 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
1858 | { |
1859 | int i; | |
1860 | unsigned char *csrc, *cdest; | |
1861 | ||
1862 | csrc = (unsigned char *) src; | |
1863 | cdest = (unsigned char *) dest; | |
1864 | i = 8; | |
1865 | while (i--) | |
1866 | *cdest++ = *csrc++; | |
1867 | } | |
1868 | ||
1869 | static int | |
fba45db2 | 1870 | threadmatch (threadref *dest, threadref *src) |
c906108c | 1871 | { |
23860348 | 1872 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
1873 | #if 0 |
1874 | unsigned char *srcp, *destp; | |
1875 | int i, result; | |
1876 | srcp = (char *) src; | |
1877 | destp = (char *) dest; | |
1878 | ||
1879 | result = 1; | |
1880 | while (i-- > 0) | |
1881 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
1882 | return result; | |
1883 | #endif | |
1884 | return 1; | |
1885 | } | |
1886 | ||
1887 | /* | |
c5aa993b JM |
1888 | threadid:1, # always request threadid |
1889 | context_exists:2, | |
1890 | display:4, | |
1891 | unique_name:8, | |
1892 | more_display:16 | |
1893 | */ | |
c906108c SS |
1894 | |
1895 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
1896 | ||
1897 | static char * | |
fba45db2 | 1898 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 1899 | { |
23860348 MS |
1900 | *pkt++ = 'q'; /* Info Query */ |
1901 | *pkt++ = 'P'; /* process or thread info */ | |
1902 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 1903 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 1904 | *pkt = '\0'; /* terminate */ |
c906108c SS |
1905 | return pkt; |
1906 | } | |
1907 | ||
23860348 | 1908 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 1909 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 1910 | add more fields as time goes by. */ |
c906108c | 1911 | |
23860348 | 1912 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 1913 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 1914 | fetch registers and its stack? */ |
c5aa993b | 1915 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 1916 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 1917 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 1918 | the process. */ |
c906108c SS |
1919 | |
1920 | static int | |
fba45db2 KB |
1921 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
1922 | struct gdb_ext_thread_info *info) | |
c906108c | 1923 | { |
d01949b6 | 1924 | struct remote_state *rs = get_remote_state (); |
c906108c | 1925 | int mask, length; |
cfd77fa1 | 1926 | int tag; |
c906108c | 1927 | threadref ref; |
6d820c5c | 1928 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
1929 | int retval = 1; |
1930 | ||
23860348 | 1931 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
1932 | info->active = 0; |
1933 | info->display[0] = '\0'; | |
1934 | info->shortname[0] = '\0'; | |
1935 | info->more_display[0] = '\0'; | |
1936 | ||
23860348 MS |
1937 | /* Assume the characters indicating the packet type have been |
1938 | stripped. */ | |
c906108c SS |
1939 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
1940 | pkt = unpack_threadid (pkt, &ref); | |
1941 | ||
1942 | if (mask == 0) | |
8a3fe4f8 | 1943 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 1944 | if (!threadmatch (&ref, expectedref)) |
23860348 | 1945 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 1946 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
1947 | return 0; |
1948 | } | |
1949 | copy_threadref (&info->threadid, &ref); | |
1950 | ||
23860348 | 1951 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 1952 | |
23860348 MS |
1953 | /* Packets are terminated with nulls. */ |
1954 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
1955 | { |
1956 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
1957 | pkt = unpack_byte (pkt, &length); /* length */ |
1958 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 1959 | { |
8a3fe4f8 | 1960 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
1961 | retval = 0; |
1962 | break; | |
1963 | } | |
1964 | if (tag == TAG_THREADID) | |
1965 | { | |
1966 | if (length != 16) | |
1967 | { | |
8a3fe4f8 | 1968 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
1969 | retval = 0; |
1970 | break; | |
1971 | } | |
1972 | pkt = unpack_threadid (pkt, &ref); | |
1973 | mask = mask & ~TAG_THREADID; | |
1974 | continue; | |
1975 | } | |
1976 | if (tag == TAG_EXISTS) | |
1977 | { | |
1978 | info->active = stub_unpack_int (pkt, length); | |
1979 | pkt += length; | |
1980 | mask = mask & ~(TAG_EXISTS); | |
1981 | if (length > 8) | |
1982 | { | |
8a3fe4f8 | 1983 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
1984 | retval = 0; |
1985 | break; | |
1986 | } | |
1987 | continue; | |
1988 | } | |
1989 | if (tag == TAG_THREADNAME) | |
1990 | { | |
1991 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
1992 | mask = mask & ~TAG_THREADNAME; | |
1993 | continue; | |
1994 | } | |
1995 | if (tag == TAG_DISPLAY) | |
1996 | { | |
1997 | pkt = unpack_string (pkt, &info->display[0], length); | |
1998 | mask = mask & ~TAG_DISPLAY; | |
1999 | continue; | |
2000 | } | |
2001 | if (tag == TAG_MOREDISPLAY) | |
2002 | { | |
2003 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
2004 | mask = mask & ~TAG_MOREDISPLAY; | |
2005 | continue; | |
2006 | } | |
8a3fe4f8 | 2007 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 2008 | break; /* Not a tag we know about. */ |
c906108c SS |
2009 | } |
2010 | return retval; | |
2011 | } | |
2012 | ||
2013 | static int | |
fba45db2 KB |
2014 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
2015 | struct gdb_ext_thread_info *info) | |
c906108c | 2016 | { |
d01949b6 | 2017 | struct remote_state *rs = get_remote_state (); |
c906108c | 2018 | int result; |
c906108c | 2019 | |
2e9f7625 DJ |
2020 | pack_threadinfo_request (rs->buf, fieldset, threadid); |
2021 | putpkt (rs->buf); | |
6d820c5c | 2022 | getpkt (&rs->buf, &rs->buf_size, 0); |
3084dd77 PA |
2023 | |
2024 | if (rs->buf[0] == '\0') | |
2025 | return 0; | |
2026 | ||
2e9f7625 | 2027 | result = remote_unpack_thread_info_response (rs->buf + 2, |
23860348 | 2028 | threadid, info); |
c906108c SS |
2029 | return result; |
2030 | } | |
2031 | ||
c906108c SS |
2032 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
2033 | ||
2034 | static char * | |
fba45db2 KB |
2035 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
2036 | threadref *nextthread) | |
c906108c SS |
2037 | { |
2038 | *pkt++ = 'q'; /* info query packet */ | |
2039 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 2040 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
2041 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
2042 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
2043 | *pkt = '\0'; | |
2044 | return pkt; | |
2045 | } | |
2046 | ||
2047 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
2048 | ||
2049 | static int | |
fba45db2 KB |
2050 | parse_threadlist_response (char *pkt, int result_limit, |
2051 | threadref *original_echo, threadref *resultlist, | |
2052 | int *doneflag) | |
c906108c | 2053 | { |
d01949b6 | 2054 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2055 | char *limit; |
2056 | int count, resultcount, done; | |
2057 | ||
2058 | resultcount = 0; | |
2059 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 2060 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 2061 | /* done parse past here */ |
c906108c SS |
2062 | pkt = unpack_byte (pkt, &count); /* count field */ |
2063 | pkt = unpack_nibble (pkt, &done); | |
2064 | /* The first threadid is the argument threadid. */ | |
2065 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
2066 | while ((count-- > 0) && (pkt < limit)) | |
2067 | { | |
2068 | pkt = unpack_threadid (pkt, resultlist++); | |
2069 | if (resultcount++ >= result_limit) | |
2070 | break; | |
2071 | } | |
2072 | if (doneflag) | |
2073 | *doneflag = done; | |
2074 | return resultcount; | |
2075 | } | |
2076 | ||
2077 | static int | |
fba45db2 KB |
2078 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
2079 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 2080 | { |
d01949b6 | 2081 | struct remote_state *rs = get_remote_state (); |
c906108c | 2082 | static threadref echo_nextthread; |
c906108c SS |
2083 | int result = 1; |
2084 | ||
23860348 | 2085 | /* Trancate result limit to be smaller than the packet size. */ |
ea9c271d DJ |
2086 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) >= get_remote_packet_size ()) |
2087 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; | |
c906108c | 2088 | |
6d820c5c DJ |
2089 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
2090 | putpkt (rs->buf); | |
2091 | getpkt (&rs->buf, &rs->buf_size, 0); | |
c906108c | 2092 | |
d8f2712d VP |
2093 | if (*rs->buf == '\0') |
2094 | *result_count = 0; | |
2095 | else | |
2096 | *result_count = | |
2097 | parse_threadlist_response (rs->buf + 2, result_limit, &echo_nextthread, | |
2098 | threadlist, done); | |
c906108c SS |
2099 | |
2100 | if (!threadmatch (&echo_nextthread, nextthread)) | |
2101 | { | |
23860348 MS |
2102 | /* FIXME: This is a good reason to drop the packet. */ |
2103 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
2104 | /* Possabilities : |
2105 | retransmit immediatly - race conditions | |
2106 | retransmit after timeout - yes | |
2107 | exit | |
2108 | wait for packet, then exit | |
2109 | */ | |
8a3fe4f8 | 2110 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 2111 | return 0; /* I choose simply exiting. */ |
c906108c SS |
2112 | } |
2113 | if (*result_count <= 0) | |
2114 | { | |
2115 | if (*done != 1) | |
2116 | { | |
8a3fe4f8 | 2117 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
2118 | result = 0; |
2119 | } | |
2120 | return result; /* break; */ | |
2121 | } | |
2122 | if (*result_count > result_limit) | |
2123 | { | |
2124 | *result_count = 0; | |
8a3fe4f8 | 2125 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
2126 | return 0; |
2127 | } | |
2128 | return result; | |
2129 | } | |
2130 | ||
23860348 MS |
2131 | /* This is the interface between remote and threads, remotes upper |
2132 | interface. */ | |
c906108c SS |
2133 | |
2134 | /* remote_find_new_threads retrieves the thread list and for each | |
2135 | thread in the list, looks up the thread in GDB's internal list, | |
79d7f229 | 2136 | adding the thread if it does not already exist. This involves |
c906108c SS |
2137 | getting partial thread lists from the remote target so, polling the |
2138 | quit_flag is required. */ | |
2139 | ||
2140 | ||
23860348 | 2141 | /* About this many threadisds fit in a packet. */ |
c906108c SS |
2142 | |
2143 | #define MAXTHREADLISTRESULTS 32 | |
2144 | ||
2145 | static int | |
fba45db2 KB |
2146 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
2147 | int looplimit) | |
c906108c SS |
2148 | { |
2149 | int done, i, result_count; | |
2150 | int startflag = 1; | |
2151 | int result = 1; | |
2152 | int loopcount = 0; | |
2153 | static threadref nextthread; | |
2154 | static threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
2155 | ||
2156 | done = 0; | |
2157 | while (!done) | |
2158 | { | |
2159 | if (loopcount++ > looplimit) | |
2160 | { | |
2161 | result = 0; | |
8a3fe4f8 | 2162 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
2163 | break; |
2164 | } | |
2165 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS, | |
2166 | &done, &result_count, resultthreadlist)) | |
2167 | { | |
2168 | result = 0; | |
2169 | break; | |
2170 | } | |
23860348 | 2171 | /* Clear for later iterations. */ |
c906108c SS |
2172 | startflag = 0; |
2173 | /* Setup to resume next batch of thread references, set nextthread. */ | |
2174 | if (result_count >= 1) | |
2175 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |
2176 | i = 0; | |
2177 | while (result_count--) | |
2178 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |
2179 | break; | |
2180 | } | |
2181 | return result; | |
2182 | } | |
2183 | ||
2184 | static int | |
fba45db2 | 2185 | remote_newthread_step (threadref *ref, void *context) |
c906108c | 2186 | { |
79d7f229 PA |
2187 | int pid = ptid_get_pid (inferior_ptid); |
2188 | ptid_t ptid = ptid_build (pid, 0, threadref_to_int (ref)); | |
39f77062 KB |
2189 | |
2190 | if (!in_thread_list (ptid)) | |
2191 | add_thread (ptid); | |
c906108c SS |
2192 | return 1; /* continue iterator */ |
2193 | } | |
2194 | ||
2195 | #define CRAZY_MAX_THREADS 1000 | |
2196 | ||
39f77062 KB |
2197 | static ptid_t |
2198 | remote_current_thread (ptid_t oldpid) | |
c906108c | 2199 | { |
d01949b6 | 2200 | struct remote_state *rs = get_remote_state (); |
79d7f229 PA |
2201 | char *p = rs->buf; |
2202 | int tid; | |
2203 | int pid; | |
c906108c SS |
2204 | |
2205 | putpkt ("qC"); | |
6d820c5c | 2206 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2207 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
82f73884 | 2208 | return read_ptid (&rs->buf[2], NULL); |
c906108c SS |
2209 | else |
2210 | return oldpid; | |
2211 | } | |
2212 | ||
802188a7 RM |
2213 | /* Find new threads for info threads command. |
2214 | * Original version, using John Metzler's thread protocol. | |
9d1f7ab2 | 2215 | */ |
cce74817 JM |
2216 | |
2217 | static void | |
fba45db2 | 2218 | remote_find_new_threads (void) |
c906108c | 2219 | { |
c5aa993b JM |
2220 | remote_threadlist_iterator (remote_newthread_step, 0, |
2221 | CRAZY_MAX_THREADS); | |
c906108c SS |
2222 | } |
2223 | ||
9d1f7ab2 MS |
2224 | /* |
2225 | * Find all threads for info threads command. | |
2226 | * Uses new thread protocol contributed by Cisco. | |
2227 | * Falls back and attempts to use the older method (above) | |
2228 | * if the target doesn't respond to the new method. | |
2229 | */ | |
2230 | ||
0f71a2f6 | 2231 | static void |
28439f5e | 2232 | remote_threads_info (struct target_ops *ops) |
0f71a2f6 | 2233 | { |
d01949b6 | 2234 | struct remote_state *rs = get_remote_state (); |
085dd6e6 | 2235 | char *bufp; |
79d7f229 | 2236 | ptid_t new_thread; |
0f71a2f6 JM |
2237 | |
2238 | if (remote_desc == 0) /* paranoia */ | |
8a3fe4f8 | 2239 | error (_("Command can only be used when connected to the remote target.")); |
0f71a2f6 | 2240 | |
9d1f7ab2 MS |
2241 | if (use_threadinfo_query) |
2242 | { | |
2243 | putpkt ("qfThreadInfo"); | |
6d820c5c | 2244 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2245 | bufp = rs->buf; |
9d1f7ab2 | 2246 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 2247 | { |
9d1f7ab2 MS |
2248 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
2249 | { | |
2250 | do | |
2251 | { | |
82f73884 | 2252 | new_thread = read_ptid (bufp, &bufp); |
1941c569 | 2253 | if (!ptid_equal (new_thread, null_ptid)) |
82f73884 | 2254 | { |
74531fed | 2255 | /* In non-stop mode, we assume new found threads |
1941c569 | 2256 | are running until proven otherwise with a |
74531fed PA |
2257 | stop reply. In all-stop, we can only get |
2258 | here if all threads are stopped. */ | |
1941c569 PA |
2259 | int running = non_stop ? 1 : 0; |
2260 | ||
2261 | remote_notice_new_inferior (new_thread, running); | |
82f73884 | 2262 | } |
9d1f7ab2 MS |
2263 | } |
2264 | while (*bufp++ == ','); /* comma-separated list */ | |
2265 | putpkt ("qsThreadInfo"); | |
6d820c5c | 2266 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2267 | bufp = rs->buf; |
9d1f7ab2 MS |
2268 | } |
2269 | return; /* done */ | |
2270 | } | |
2271 | } | |
2272 | ||
74531fed PA |
2273 | /* Only qfThreadInfo is supported in non-stop mode. */ |
2274 | if (non_stop) | |
2275 | return; | |
2276 | ||
23860348 | 2277 | /* Else fall back to old method based on jmetzler protocol. */ |
9d1f7ab2 MS |
2278 | use_threadinfo_query = 0; |
2279 | remote_find_new_threads (); | |
2280 | return; | |
2281 | } | |
2282 | ||
802188a7 | 2283 | /* |
9d1f7ab2 MS |
2284 | * Collect a descriptive string about the given thread. |
2285 | * The target may say anything it wants to about the thread | |
2286 | * (typically info about its blocked / runnable state, name, etc.). | |
2287 | * This string will appear in the info threads display. | |
802188a7 | 2288 | * |
9d1f7ab2 MS |
2289 | * Optional: targets are not required to implement this function. |
2290 | */ | |
2291 | ||
2292 | static char * | |
2293 | remote_threads_extra_info (struct thread_info *tp) | |
2294 | { | |
d01949b6 | 2295 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
2296 | int result; |
2297 | int set; | |
2298 | threadref id; | |
2299 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 2300 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
2301 | int n = 0; /* position in display_buf */ |
2302 | ||
2303 | if (remote_desc == 0) /* paranoia */ | |
8e65ff28 | 2304 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 2305 | _("remote_threads_extra_info")); |
9d1f7ab2 | 2306 | |
60e569b9 PA |
2307 | if (ptid_equal (tp->ptid, magic_null_ptid) |
2308 | || (ptid_get_pid (tp->ptid) != 0 && ptid_get_tid (tp->ptid) == 0)) | |
2309 | /* This is the main thread which was added by GDB. The remote | |
2310 | server doesn't know about it. */ | |
2311 | return NULL; | |
2312 | ||
9d1f7ab2 MS |
2313 | if (use_threadextra_query) |
2314 | { | |
82f73884 PA |
2315 | char *b = rs->buf; |
2316 | char *endb = rs->buf + get_remote_packet_size (); | |
2317 | ||
2318 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
2319 | b += strlen (b); | |
2320 | write_ptid (b, endb, tp->ptid); | |
2321 | ||
2e9f7625 | 2322 | putpkt (rs->buf); |
6d820c5c | 2323 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2324 | if (rs->buf[0] != 0) |
9d1f7ab2 | 2325 | { |
2e9f7625 DJ |
2326 | n = min (strlen (rs->buf) / 2, sizeof (display_buf)); |
2327 | result = hex2bin (rs->buf, (gdb_byte *) display_buf, n); | |
30559e10 | 2328 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
2329 | return display_buf; |
2330 | } | |
0f71a2f6 | 2331 | } |
9d1f7ab2 MS |
2332 | |
2333 | /* If the above query fails, fall back to the old method. */ | |
2334 | use_threadextra_query = 0; | |
2335 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
2336 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
79d7f229 | 2337 | int_to_threadref (&id, ptid_get_tid (tp->ptid)); |
9d1f7ab2 MS |
2338 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
2339 | if (threadinfo.active) | |
0f71a2f6 | 2340 | { |
9d1f7ab2 | 2341 | if (*threadinfo.shortname) |
2bc416ba | 2342 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
ecbc58df | 2343 | " Name: %s,", threadinfo.shortname); |
9d1f7ab2 | 2344 | if (*threadinfo.display) |
2bc416ba | 2345 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 2346 | " State: %s,", threadinfo.display); |
9d1f7ab2 | 2347 | if (*threadinfo.more_display) |
2bc416ba | 2348 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 2349 | " Priority: %s", threadinfo.more_display); |
9d1f7ab2 MS |
2350 | |
2351 | if (n > 0) | |
c5aa993b | 2352 | { |
23860348 | 2353 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
2354 | if (',' == display_buf[n-1]) |
2355 | display_buf[n-1] = ' '; | |
2356 | return display_buf; | |
c5aa993b | 2357 | } |
0f71a2f6 | 2358 | } |
9d1f7ab2 | 2359 | return NULL; |
0f71a2f6 | 2360 | } |
c906108c | 2361 | \f |
c5aa993b | 2362 | |
24b06219 | 2363 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
2364 | |
2365 | static void | |
fba45db2 | 2366 | extended_remote_restart (void) |
c906108c | 2367 | { |
d01949b6 | 2368 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2369 | |
2370 | /* Send the restart command; for reasons I don't understand the | |
2371 | remote side really expects a number after the "R". */ | |
ea9c271d | 2372 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); |
6d820c5c | 2373 | putpkt (rs->buf); |
c906108c | 2374 | |
ad9a8f3f | 2375 | remote_fileio_reset (); |
c906108c SS |
2376 | } |
2377 | \f | |
2378 | /* Clean up connection to a remote debugger. */ | |
2379 | ||
c906108c | 2380 | static void |
fba45db2 | 2381 | remote_close (int quitting) |
c906108c | 2382 | { |
d3fd5342 PA |
2383 | if (remote_desc == NULL) |
2384 | return; /* already closed */ | |
2385 | ||
2386 | /* Make sure we leave stdin registered in the event loop, and we | |
2387 | don't leave the async SIGINT signal handler installed. */ | |
2388 | remote_terminal_ours (); | |
ce5ce7ed | 2389 | |
d3fd5342 PA |
2390 | serial_close (remote_desc); |
2391 | remote_desc = NULL; | |
ce5ce7ed PA |
2392 | |
2393 | /* We don't have a connection to the remote stub anymore. Get rid | |
2394 | of all the inferiors and their threads we were controlling. */ | |
2395 | discard_all_inferiors (); | |
2396 | ||
74531fed PA |
2397 | /* We're no longer interested in any of these events. */ |
2398 | discard_pending_stop_replies (-1); | |
2399 | ||
2400 | if (remote_async_inferior_event_token) | |
2401 | delete_async_event_handler (&remote_async_inferior_event_token); | |
2402 | if (remote_async_get_pending_events_token) | |
2403 | delete_async_event_handler (&remote_async_get_pending_events_token); | |
c906108c SS |
2404 | } |
2405 | ||
23860348 | 2406 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
2407 | |
2408 | static void | |
fba45db2 | 2409 | get_offsets (void) |
c906108c | 2410 | { |
d01949b6 | 2411 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 2412 | char *buf; |
085dd6e6 | 2413 | char *ptr; |
31d99776 DJ |
2414 | int lose, num_segments = 0, do_sections, do_segments; |
2415 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
c906108c | 2416 | struct section_offsets *offs; |
31d99776 DJ |
2417 | struct symfile_segment_data *data; |
2418 | ||
2419 | if (symfile_objfile == NULL) | |
2420 | return; | |
c906108c SS |
2421 | |
2422 | putpkt ("qOffsets"); | |
6d820c5c | 2423 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2424 | buf = rs->buf; |
c906108c SS |
2425 | |
2426 | if (buf[0] == '\000') | |
2427 | return; /* Return silently. Stub doesn't support | |
23860348 | 2428 | this command. */ |
c906108c SS |
2429 | if (buf[0] == 'E') |
2430 | { | |
8a3fe4f8 | 2431 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
2432 | return; |
2433 | } | |
2434 | ||
2435 | /* Pick up each field in turn. This used to be done with scanf, but | |
2436 | scanf will make trouble if CORE_ADDR size doesn't match | |
2437 | conversion directives correctly. The following code will work | |
2438 | with any size of CORE_ADDR. */ | |
2439 | text_addr = data_addr = bss_addr = 0; | |
2440 | ptr = buf; | |
2441 | lose = 0; | |
2442 | ||
2443 | if (strncmp (ptr, "Text=", 5) == 0) | |
2444 | { | |
2445 | ptr += 5; | |
2446 | /* Don't use strtol, could lose on big values. */ | |
2447 | while (*ptr && *ptr != ';') | |
2448 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 2449 | |
31d99776 DJ |
2450 | if (strncmp (ptr, ";Data=", 6) == 0) |
2451 | { | |
2452 | ptr += 6; | |
2453 | while (*ptr && *ptr != ';') | |
2454 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
2455 | } | |
2456 | else | |
2457 | lose = 1; | |
2458 | ||
2459 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
2460 | { | |
2461 | ptr += 5; | |
2462 | while (*ptr && *ptr != ';') | |
2463 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 2464 | |
31d99776 DJ |
2465 | if (bss_addr != data_addr) |
2466 | warning (_("Target reported unsupported offsets: %s"), buf); | |
2467 | } | |
2468 | else | |
2469 | lose = 1; | |
2470 | } | |
2471 | else if (strncmp (ptr, "TextSeg=", 8) == 0) | |
c906108c | 2472 | { |
31d99776 DJ |
2473 | ptr += 8; |
2474 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 2475 | while (*ptr && *ptr != ';') |
31d99776 DJ |
2476 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
2477 | num_segments = 1; | |
2478 | ||
2479 | if (strncmp (ptr, ";DataSeg=", 9) == 0) | |
2480 | { | |
2481 | ptr += 9; | |
2482 | while (*ptr && *ptr != ';') | |
2483 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
2484 | num_segments++; | |
2485 | } | |
c906108c SS |
2486 | } |
2487 | else | |
2488 | lose = 1; | |
2489 | ||
2490 | if (lose) | |
8a3fe4f8 | 2491 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
2492 | else if (*ptr != '\0') |
2493 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 2494 | |
802188a7 | 2495 | offs = ((struct section_offsets *) |
a39a16c4 | 2496 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 2497 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 2498 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 2499 | |
31d99776 DJ |
2500 | data = get_symfile_segment_data (symfile_objfile->obfd); |
2501 | do_segments = (data != NULL); | |
2502 | do_sections = num_segments == 0; | |
c906108c | 2503 | |
28c32713 | 2504 | if (num_segments > 0) |
31d99776 | 2505 | { |
31d99776 DJ |
2506 | segments[0] = text_addr; |
2507 | segments[1] = data_addr; | |
2508 | } | |
28c32713 JB |
2509 | /* If we have two segments, we can still try to relocate everything |
2510 | by assuming that the .text and .data offsets apply to the whole | |
2511 | text and data segments. Convert the offsets given in the packet | |
2512 | to base addresses for symfile_map_offsets_to_segments. */ | |
2513 | else if (data && data->num_segments == 2) | |
2514 | { | |
2515 | segments[0] = data->segment_bases[0] + text_addr; | |
2516 | segments[1] = data->segment_bases[1] + data_addr; | |
2517 | num_segments = 2; | |
2518 | } | |
8d385431 DJ |
2519 | /* If the object file has only one segment, assume that it is text |
2520 | rather than data; main programs with no writable data are rare, | |
2521 | but programs with no code are useless. Of course the code might | |
2522 | have ended up in the data segment... to detect that we would need | |
2523 | the permissions here. */ | |
2524 | else if (data && data->num_segments == 1) | |
2525 | { | |
2526 | segments[0] = data->segment_bases[0] + text_addr; | |
2527 | num_segments = 1; | |
2528 | } | |
28c32713 JB |
2529 | /* There's no way to relocate by segment. */ |
2530 | else | |
2531 | do_segments = 0; | |
31d99776 DJ |
2532 | |
2533 | if (do_segments) | |
2534 | { | |
2535 | int ret = symfile_map_offsets_to_segments (symfile_objfile->obfd, data, | |
2536 | offs, num_segments, segments); | |
2537 | ||
2538 | if (ret == 0 && !do_sections) | |
2539 | error (_("Can not handle qOffsets TextSeg response with this symbol file")); | |
2540 | ||
2541 | if (ret > 0) | |
2542 | do_sections = 0; | |
2543 | } | |
c906108c | 2544 | |
9ef895d6 DJ |
2545 | if (data) |
2546 | free_symfile_segment_data (data); | |
31d99776 DJ |
2547 | |
2548 | if (do_sections) | |
2549 | { | |
2550 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; | |
2551 | ||
2552 | /* This is a temporary kludge to force data and bss to use the same offsets | |
2553 | because that's what nlmconv does now. The real solution requires changes | |
2554 | to the stub and remote.c that I don't have time to do right now. */ | |
2555 | ||
2556 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; | |
2557 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
2558 | } | |
c906108c SS |
2559 | |
2560 | objfile_relocate (symfile_objfile, offs); | |
2561 | } | |
2562 | ||
74531fed PA |
2563 | /* Callback for iterate_over_threads. Set the STOP_REQUESTED flags in |
2564 | threads we know are stopped already. This is used during the | |
2565 | initial remote connection in non-stop mode --- threads that are | |
2566 | reported as already being stopped are left stopped. */ | |
2567 | ||
2568 | static int | |
2569 | set_stop_requested_callback (struct thread_info *thread, void *data) | |
2570 | { | |
2571 | /* If we have a stop reply for this thread, it must be stopped. */ | |
2572 | if (peek_stop_reply (thread->ptid)) | |
2573 | set_stop_requested (thread->ptid, 1); | |
2574 | ||
2575 | return 0; | |
2576 | } | |
2577 | ||
8621d6a9 | 2578 | /* Stub for catch_exception. */ |
0f71a2f6 | 2579 | |
2d717e4f DJ |
2580 | struct start_remote_args |
2581 | { | |
2582 | int from_tty; | |
2583 | ||
2584 | /* The current target. */ | |
2585 | struct target_ops *target; | |
2586 | ||
2587 | /* Non-zero if this is an extended-remote target. */ | |
2588 | int extended_p; | |
2589 | }; | |
2590 | ||
9cbc821d | 2591 | static void |
2d717e4f | 2592 | remote_start_remote (struct ui_out *uiout, void *opaque) |
c906108c | 2593 | { |
2d717e4f | 2594 | struct start_remote_args *args = opaque; |
c8d104ad PA |
2595 | struct remote_state *rs = get_remote_state (); |
2596 | struct packet_config *noack_config; | |
2d717e4f | 2597 | char *wait_status = NULL; |
8621d6a9 | 2598 | |
23860348 | 2599 | immediate_quit++; /* Allow user to interrupt it. */ |
c906108c | 2600 | |
c8d104ad PA |
2601 | /* Ack any packet which the remote side has already sent. */ |
2602 | serial_write (remote_desc, "+", 1); | |
2603 | ||
2604 | /* The first packet we send to the target is the optional "supported | |
2605 | packets" request. If the target can answer this, it will tell us | |
2606 | which later probes to skip. */ | |
2607 | remote_query_supported (); | |
2608 | ||
2609 | /* Next, we possibly activate noack mode. | |
2610 | ||
2611 | If the QStartNoAckMode packet configuration is set to AUTO, | |
2612 | enable noack mode if the stub reported a wish for it with | |
2613 | qSupported. | |
2614 | ||
2615 | If set to TRUE, then enable noack mode even if the stub didn't | |
2616 | report it in qSupported. If the stub doesn't reply OK, the | |
2617 | session ends with an error. | |
2618 | ||
2619 | If FALSE, then don't activate noack mode, regardless of what the | |
2620 | stub claimed should be the default with qSupported. */ | |
2621 | ||
2622 | noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode]; | |
2623 | ||
2624 | if (noack_config->detect == AUTO_BOOLEAN_TRUE | |
2625 | || (noack_config->detect == AUTO_BOOLEAN_AUTO | |
2626 | && noack_config->support == PACKET_ENABLE)) | |
2627 | { | |
2628 | putpkt ("QStartNoAckMode"); | |
2629 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2630 | if (packet_ok (rs->buf, noack_config) == PACKET_OK) | |
2631 | rs->noack_mode = 1; | |
2632 | } | |
2633 | ||
5fe04517 PA |
2634 | if (args->extended_p) |
2635 | { | |
2636 | /* Tell the remote that we are using the extended protocol. */ | |
2637 | putpkt ("!"); | |
2638 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2639 | } | |
2640 | ||
d962ef82 DJ |
2641 | /* Next, if the target can specify a description, read it. We do |
2642 | this before anything involving memory or registers. */ | |
2643 | target_find_description (); | |
2644 | ||
50c71eaf PA |
2645 | /* On OSs where the list of libraries is global to all |
2646 | processes, we fetch them early. */ | |
2647 | if (gdbarch_has_global_solist (target_gdbarch)) | |
2648 | solib_add (NULL, args->from_tty, args->target, auto_solib_add); | |
2649 | ||
74531fed PA |
2650 | if (non_stop) |
2651 | { | |
2652 | if (!rs->non_stop_aware) | |
2653 | error (_("Non-stop mode requested, but remote does not support non-stop")); | |
2654 | ||
2655 | putpkt ("QNonStop:1"); | |
2656 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2657 | ||
2658 | if (strcmp (rs->buf, "OK") != 0) | |
2659 | error ("Remote refused setting non-stop mode with: %s", rs->buf); | |
2660 | ||
2661 | /* Find about threads and processes the stub is already | |
2662 | controlling. We default to adding them in the running state. | |
2663 | The '?' query below will then tell us about which threads are | |
2664 | stopped. */ | |
28439f5e | 2665 | remote_threads_info (args->target); |
74531fed PA |
2666 | } |
2667 | else if (rs->non_stop_aware) | |
2668 | { | |
2669 | /* Don't assume that the stub can operate in all-stop mode. | |
2670 | Request it explicitely. */ | |
2671 | putpkt ("QNonStop:0"); | |
2672 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2673 | ||
2674 | if (strcmp (rs->buf, "OK") != 0) | |
2675 | error ("Remote refused setting all-stop mode with: %s", rs->buf); | |
2676 | } | |
2677 | ||
2d717e4f DJ |
2678 | /* Check whether the target is running now. */ |
2679 | putpkt ("?"); | |
2680 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2681 | ||
74531fed | 2682 | if (!non_stop) |
2d717e4f | 2683 | { |
74531fed | 2684 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') |
2d717e4f | 2685 | { |
c35b1492 | 2686 | if (!args->extended_p) |
74531fed | 2687 | error (_("The target is not running (try extended-remote?)")); |
c35b1492 PA |
2688 | |
2689 | /* We're connected, but not running. Drop out before we | |
2690 | call start_remote. */ | |
2691 | return; | |
2d717e4f DJ |
2692 | } |
2693 | else | |
74531fed | 2694 | { |
74531fed PA |
2695 | /* Save the reply for later. */ |
2696 | wait_status = alloca (strlen (rs->buf) + 1); | |
2697 | strcpy (wait_status, rs->buf); | |
2698 | } | |
2699 | ||
2700 | /* Let the stub know that we want it to return the thread. */ | |
2701 | set_continue_thread (minus_one_ptid); | |
2702 | ||
2703 | /* Without this, some commands which require an active target | |
2704 | (such as kill) won't work. This variable serves (at least) | |
2705 | double duty as both the pid of the target process (if it has | |
2706 | such), and as a flag indicating that a target is active. | |
2707 | These functions should be split out into seperate variables, | |
2708 | especially since GDB will someday have a notion of debugging | |
2709 | several processes. */ | |
2710 | inferior_ptid = magic_null_ptid; | |
2711 | ||
2712 | /* Now, if we have thread information, update inferior_ptid. */ | |
2713 | inferior_ptid = remote_current_thread (inferior_ptid); | |
2714 | ||
0b16c5cf | 2715 | remote_add_inferior (ptid_get_pid (inferior_ptid), -1); |
74531fed PA |
2716 | |
2717 | /* Always add the main thread. */ | |
2718 | add_thread_silent (inferior_ptid); | |
2719 | ||
2720 | get_offsets (); /* Get text, data & bss offsets. */ | |
2721 | ||
d962ef82 DJ |
2722 | /* If we could not find a description using qXfer, and we know |
2723 | how to do it some other way, try again. This is not | |
2724 | supported for non-stop; it could be, but it is tricky if | |
2725 | there are no stopped threads when we connect. */ | |
2726 | if (remote_read_description_p (args->target) | |
2727 | && gdbarch_target_desc (target_gdbarch) == NULL) | |
2728 | { | |
2729 | target_clear_description (); | |
2730 | target_find_description (); | |
2731 | } | |
2732 | ||
74531fed PA |
2733 | /* Use the previously fetched status. */ |
2734 | gdb_assert (wait_status != NULL); | |
2735 | strcpy (rs->buf, wait_status); | |
2736 | rs->cached_wait_status = 1; | |
2737 | ||
2738 | immediate_quit--; | |
2739 | start_remote (args->from_tty); /* Initialize gdb process mechanisms. */ | |
2d717e4f DJ |
2740 | } |
2741 | else | |
2742 | { | |
68c97600 PA |
2743 | /* Clear WFI global state. Do this before finding about new |
2744 | threads and inferiors, and setting the current inferior. | |
2745 | Otherwise we would clear the proceed status of the current | |
2746 | inferior when we want its stop_soon state to be preserved | |
2747 | (see notice_new_inferior). */ | |
2748 | init_wait_for_inferior (); | |
2749 | ||
74531fed PA |
2750 | /* In non-stop, we will either get an "OK", meaning that there |
2751 | are no stopped threads at this time; or, a regular stop | |
2752 | reply. In the latter case, there may be more than one thread | |
2753 | stopped --- we pull them all out using the vStopped | |
2754 | mechanism. */ | |
2755 | if (strcmp (rs->buf, "OK") != 0) | |
2756 | { | |
2757 | struct stop_reply *stop_reply; | |
2758 | struct cleanup *old_chain; | |
2d717e4f | 2759 | |
74531fed PA |
2760 | stop_reply = stop_reply_xmalloc (); |
2761 | old_chain = make_cleanup (do_stop_reply_xfree, stop_reply); | |
2d717e4f | 2762 | |
74531fed PA |
2763 | remote_parse_stop_reply (rs->buf, stop_reply); |
2764 | discard_cleanups (old_chain); | |
c0a2216e | 2765 | |
74531fed PA |
2766 | /* get_pending_stop_replies acks this one, and gets the rest |
2767 | out. */ | |
2768 | pending_stop_reply = stop_reply; | |
2769 | remote_get_pending_stop_replies (); | |
c906108c | 2770 | |
74531fed PA |
2771 | /* Make sure that threads that were stopped remain |
2772 | stopped. */ | |
2773 | iterate_over_threads (set_stop_requested_callback, NULL); | |
2774 | } | |
2d717e4f | 2775 | |
74531fed PA |
2776 | if (target_can_async_p ()) |
2777 | target_async (inferior_event_handler, 0); | |
c906108c | 2778 | |
74531fed PA |
2779 | if (thread_count () == 0) |
2780 | { | |
c35b1492 | 2781 | if (!args->extended_p) |
74531fed | 2782 | error (_("The target is not running (try extended-remote?)")); |
82f73884 | 2783 | |
c35b1492 PA |
2784 | /* We're connected, but not running. Drop out before we |
2785 | call start_remote. */ | |
2786 | return; | |
2787 | } | |
74531fed PA |
2788 | |
2789 | /* Let the stub know that we want it to return the thread. */ | |
c0a2216e | 2790 | |
74531fed PA |
2791 | /* Force the stub to choose a thread. */ |
2792 | set_general_thread (null_ptid); | |
c906108c | 2793 | |
74531fed PA |
2794 | /* Query it. */ |
2795 | inferior_ptid = remote_current_thread (minus_one_ptid); | |
2796 | if (ptid_equal (inferior_ptid, minus_one_ptid)) | |
2797 | error (_("remote didn't report the current thread in non-stop mode")); | |
c906108c | 2798 | |
74531fed PA |
2799 | get_offsets (); /* Get text, data & bss offsets. */ |
2800 | ||
2801 | /* In non-stop mode, any cached wait status will be stored in | |
2802 | the stop reply queue. */ | |
2803 | gdb_assert (wait_status == NULL); | |
2804 | } | |
c8d104ad | 2805 | |
c8d104ad PA |
2806 | /* If we connected to a live target, do some additional setup. */ |
2807 | if (target_has_execution) | |
2808 | { | |
2809 | if (exec_bfd) /* No use without an exec file. */ | |
2810 | remote_check_symbols (symfile_objfile); | |
2811 | } | |
50c71eaf | 2812 | |
2567c7d9 PA |
2813 | /* If breakpoints are global, insert them now. */ |
2814 | if (gdbarch_has_global_breakpoints (target_gdbarch) | |
50c71eaf PA |
2815 | && breakpoints_always_inserted_mode ()) |
2816 | insert_breakpoints (); | |
c906108c SS |
2817 | } |
2818 | ||
2819 | /* Open a connection to a remote debugger. | |
2820 | NAME is the filename used for communication. */ | |
2821 | ||
2822 | static void | |
fba45db2 | 2823 | remote_open (char *name, int from_tty) |
c906108c | 2824 | { |
75c99385 | 2825 | remote_open_1 (name, from_tty, &remote_ops, 0); |
43ff13b4 JM |
2826 | } |
2827 | ||
c906108c SS |
2828 | /* Open a connection to a remote debugger using the extended |
2829 | remote gdb protocol. NAME is the filename used for communication. */ | |
2830 | ||
2831 | static void | |
fba45db2 | 2832 | extended_remote_open (char *name, int from_tty) |
c906108c | 2833 | { |
75c99385 | 2834 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */); |
43ff13b4 JM |
2835 | } |
2836 | ||
c906108c SS |
2837 | /* Generic code for opening a connection to a remote target. */ |
2838 | ||
d471ea57 AC |
2839 | static void |
2840 | init_all_packet_configs (void) | |
2841 | { | |
2842 | int i; | |
444abaca DJ |
2843 | for (i = 0; i < PACKET_MAX; i++) |
2844 | update_packet_config (&remote_protocol_packets[i]); | |
d471ea57 AC |
2845 | } |
2846 | ||
23860348 | 2847 | /* Symbol look-up. */ |
dc8acb97 MS |
2848 | |
2849 | static void | |
2850 | remote_check_symbols (struct objfile *objfile) | |
2851 | { | |
d01949b6 | 2852 | struct remote_state *rs = get_remote_state (); |
dc8acb97 MS |
2853 | char *msg, *reply, *tmp; |
2854 | struct minimal_symbol *sym; | |
2855 | int end; | |
2856 | ||
444abaca | 2857 | if (remote_protocol_packets[PACKET_qSymbol].support == PACKET_DISABLE) |
dc8acb97 MS |
2858 | return; |
2859 | ||
3c9c4b83 PA |
2860 | /* Make sure the remote is pointing at the right process. */ |
2861 | set_general_process (); | |
2862 | ||
6d820c5c DJ |
2863 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
2864 | because we need both at the same time. */ | |
ea9c271d | 2865 | msg = alloca (get_remote_packet_size ()); |
6d820c5c | 2866 | |
23860348 | 2867 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
2868 | |
2869 | putpkt ("qSymbol::"); | |
6d820c5c DJ |
2870 | getpkt (&rs->buf, &rs->buf_size, 0); |
2871 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSymbol]); | |
2e9f7625 | 2872 | reply = rs->buf; |
dc8acb97 MS |
2873 | |
2874 | while (strncmp (reply, "qSymbol:", 8) == 0) | |
2875 | { | |
2876 | tmp = &reply[8]; | |
cfd77fa1 | 2877 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
2878 | msg[end] = '\0'; |
2879 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
2880 | if (sym == NULL) | |
ea9c271d | 2881 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
dc8acb97 | 2882 | else |
2bbe3cc1 | 2883 | { |
5af949e3 | 2884 | int addr_size = gdbarch_addr_bit (target_gdbarch) / 8; |
2bbe3cc1 DJ |
2885 | CORE_ADDR sym_addr = SYMBOL_VALUE_ADDRESS (sym); |
2886 | ||
2887 | /* If this is a function address, return the start of code | |
2888 | instead of any data function descriptor. */ | |
1cf3db46 | 2889 | sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch, |
2bbe3cc1 DJ |
2890 | sym_addr, |
2891 | ¤t_target); | |
2892 | ||
2893 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", | |
5af949e3 | 2894 | phex_nz (sym_addr, addr_size), &reply[8]); |
2bbe3cc1 DJ |
2895 | } |
2896 | ||
dc8acb97 | 2897 | putpkt (msg); |
6d820c5c | 2898 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2899 | reply = rs->buf; |
dc8acb97 MS |
2900 | } |
2901 | } | |
2902 | ||
9db8d71f DJ |
2903 | static struct serial * |
2904 | remote_serial_open (char *name) | |
2905 | { | |
2906 | static int udp_warning = 0; | |
2907 | ||
2908 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
2909 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
2910 | serial connection is reliable and not the serial connection promising | |
2911 | to be. */ | |
2912 | if (!udp_warning && strncmp (name, "udp:", 4) == 0) | |
2913 | { | |
8a3fe4f8 AC |
2914 | warning (_("\ |
2915 | The remote protocol may be unreliable over UDP.\n\ | |
2916 | Some events may be lost, rendering further debugging impossible.")); | |
9db8d71f DJ |
2917 | udp_warning = 1; |
2918 | } | |
2919 | ||
2920 | return serial_open (name); | |
2921 | } | |
2922 | ||
be2a5f71 DJ |
2923 | /* This type describes each known response to the qSupported |
2924 | packet. */ | |
2925 | struct protocol_feature | |
2926 | { | |
2927 | /* The name of this protocol feature. */ | |
2928 | const char *name; | |
2929 | ||
2930 | /* The default for this protocol feature. */ | |
2931 | enum packet_support default_support; | |
2932 | ||
2933 | /* The function to call when this feature is reported, or after | |
2934 | qSupported processing if the feature is not supported. | |
2935 | The first argument points to this structure. The second | |
2936 | argument indicates whether the packet requested support be | |
2937 | enabled, disabled, or probed (or the default, if this function | |
2938 | is being called at the end of processing and this feature was | |
2939 | not reported). The third argument may be NULL; if not NULL, it | |
2940 | is a NUL-terminated string taken from the packet following | |
2941 | this feature's name and an equals sign. */ | |
2942 | void (*func) (const struct protocol_feature *, enum packet_support, | |
2943 | const char *); | |
2944 | ||
2945 | /* The corresponding packet for this feature. Only used if | |
2946 | FUNC is remote_supported_packet. */ | |
2947 | int packet; | |
2948 | }; | |
2949 | ||
be2a5f71 DJ |
2950 | static void |
2951 | remote_supported_packet (const struct protocol_feature *feature, | |
2952 | enum packet_support support, | |
2953 | const char *argument) | |
2954 | { | |
2955 | if (argument) | |
2956 | { | |
2957 | warning (_("Remote qSupported response supplied an unexpected value for" | |
2958 | " \"%s\"."), feature->name); | |
2959 | return; | |
2960 | } | |
2961 | ||
2962 | if (remote_protocol_packets[feature->packet].support | |
2963 | == PACKET_SUPPORT_UNKNOWN) | |
2964 | remote_protocol_packets[feature->packet].support = support; | |
2965 | } | |
be2a5f71 DJ |
2966 | |
2967 | static void | |
2968 | remote_packet_size (const struct protocol_feature *feature, | |
2969 | enum packet_support support, const char *value) | |
2970 | { | |
2971 | struct remote_state *rs = get_remote_state (); | |
2972 | ||
2973 | int packet_size; | |
2974 | char *value_end; | |
2975 | ||
2976 | if (support != PACKET_ENABLE) | |
2977 | return; | |
2978 | ||
2979 | if (value == NULL || *value == '\0') | |
2980 | { | |
2981 | warning (_("Remote target reported \"%s\" without a size."), | |
2982 | feature->name); | |
2983 | return; | |
2984 | } | |
2985 | ||
2986 | errno = 0; | |
2987 | packet_size = strtol (value, &value_end, 16); | |
2988 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
2989 | { | |
2990 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
2991 | feature->name, value); | |
2992 | return; | |
2993 | } | |
2994 | ||
2995 | if (packet_size > MAX_REMOTE_PACKET_SIZE) | |
2996 | { | |
2997 | warning (_("limiting remote suggested packet size (%d bytes) to %d"), | |
2998 | packet_size, MAX_REMOTE_PACKET_SIZE); | |
2999 | packet_size = MAX_REMOTE_PACKET_SIZE; | |
3000 | } | |
3001 | ||
3002 | /* Record the new maximum packet size. */ | |
3003 | rs->explicit_packet_size = packet_size; | |
3004 | } | |
3005 | ||
82f73884 PA |
3006 | static void |
3007 | remote_multi_process_feature (const struct protocol_feature *feature, | |
3008 | enum packet_support support, const char *value) | |
3009 | { | |
3010 | struct remote_state *rs = get_remote_state (); | |
3011 | rs->multi_process_aware = (support == PACKET_ENABLE); | |
3012 | } | |
3013 | ||
74531fed PA |
3014 | static void |
3015 | remote_non_stop_feature (const struct protocol_feature *feature, | |
3016 | enum packet_support support, const char *value) | |
3017 | { | |
3018 | struct remote_state *rs = get_remote_state (); | |
3019 | rs->non_stop_aware = (support == PACKET_ENABLE); | |
3020 | } | |
3021 | ||
782b2b07 SS |
3022 | static void |
3023 | remote_cond_tracepoint_feature (const struct protocol_feature *feature, | |
3024 | enum packet_support support, | |
3025 | const char *value) | |
3026 | { | |
3027 | struct remote_state *rs = get_remote_state (); | |
3028 | rs->cond_tracepoints = (support == PACKET_ENABLE); | |
3029 | } | |
3030 | ||
be2a5f71 | 3031 | static struct protocol_feature remote_protocol_features[] = { |
0876f84a | 3032 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 3033 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 3034 | PACKET_qXfer_auxv }, |
23181151 DJ |
3035 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
3036 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
3037 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
3038 | PACKET_qXfer_libraries }, | |
fd79ecee | 3039 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 3040 | PACKET_qXfer_memory_map }, |
4de6483e UW |
3041 | { "qXfer:spu:read", PACKET_DISABLE, remote_supported_packet, |
3042 | PACKET_qXfer_spu_read }, | |
3043 | { "qXfer:spu:write", PACKET_DISABLE, remote_supported_packet, | |
3044 | PACKET_qXfer_spu_write }, | |
07e059b5 VP |
3045 | { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet, |
3046 | PACKET_qXfer_osdata }, | |
89be2091 DJ |
3047 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
3048 | PACKET_QPassSignals }, | |
a6f3e723 SL |
3049 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
3050 | PACKET_QStartNoAckMode }, | |
82f73884 | 3051 | { "multiprocess", PACKET_DISABLE, remote_multi_process_feature, -1 }, |
74531fed | 3052 | { "QNonStop", PACKET_DISABLE, remote_non_stop_feature, -1 }, |
4aa995e1 PA |
3053 | { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet, |
3054 | PACKET_qXfer_siginfo_read }, | |
3055 | { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet, | |
3056 | PACKET_qXfer_siginfo_write }, | |
782b2b07 SS |
3057 | { "ConditionalTracepoints", PACKET_DISABLE, remote_cond_tracepoint_feature, |
3058 | PACKET_ConditionalTracepoints }, | |
be2a5f71 DJ |
3059 | }; |
3060 | ||
3061 | static void | |
3062 | remote_query_supported (void) | |
3063 | { | |
3064 | struct remote_state *rs = get_remote_state (); | |
3065 | char *next; | |
3066 | int i; | |
3067 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
3068 | ||
3069 | /* The packet support flags are handled differently for this packet | |
3070 | than for most others. We treat an error, a disabled packet, and | |
3071 | an empty response identically: any features which must be reported | |
3072 | to be used will be automatically disabled. An empty buffer | |
3073 | accomplishes this, since that is also the representation for a list | |
3074 | containing no features. */ | |
3075 | ||
3076 | rs->buf[0] = 0; | |
3077 | if (remote_protocol_packets[PACKET_qSupported].support != PACKET_DISABLE) | |
3078 | { | |
82f73884 PA |
3079 | if (rs->extended) |
3080 | putpkt ("qSupported:multiprocess+"); | |
3081 | else | |
3082 | putpkt ("qSupported"); | |
3083 | ||
be2a5f71 DJ |
3084 | getpkt (&rs->buf, &rs->buf_size, 0); |
3085 | ||
3086 | /* If an error occured, warn, but do not return - just reset the | |
3087 | buffer to empty and go on to disable features. */ | |
3088 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
3089 | == PACKET_ERROR) | |
3090 | { | |
3091 | warning (_("Remote failure reply: %s"), rs->buf); | |
3092 | rs->buf[0] = 0; | |
3093 | } | |
3094 | } | |
3095 | ||
3096 | memset (seen, 0, sizeof (seen)); | |
3097 | ||
3098 | next = rs->buf; | |
3099 | while (*next) | |
3100 | { | |
3101 | enum packet_support is_supported; | |
3102 | char *p, *end, *name_end, *value; | |
3103 | ||
3104 | /* First separate out this item from the rest of the packet. If | |
3105 | there's another item after this, we overwrite the separator | |
3106 | (terminated strings are much easier to work with). */ | |
3107 | p = next; | |
3108 | end = strchr (p, ';'); | |
3109 | if (end == NULL) | |
3110 | { | |
3111 | end = p + strlen (p); | |
3112 | next = end; | |
3113 | } | |
3114 | else | |
3115 | { | |
89be2091 DJ |
3116 | *end = '\0'; |
3117 | next = end + 1; | |
3118 | ||
be2a5f71 DJ |
3119 | if (end == p) |
3120 | { | |
3121 | warning (_("empty item in \"qSupported\" response")); | |
3122 | continue; | |
3123 | } | |
be2a5f71 DJ |
3124 | } |
3125 | ||
3126 | name_end = strchr (p, '='); | |
3127 | if (name_end) | |
3128 | { | |
3129 | /* This is a name=value entry. */ | |
3130 | is_supported = PACKET_ENABLE; | |
3131 | value = name_end + 1; | |
3132 | *name_end = '\0'; | |
3133 | } | |
3134 | else | |
3135 | { | |
3136 | value = NULL; | |
3137 | switch (end[-1]) | |
3138 | { | |
3139 | case '+': | |
3140 | is_supported = PACKET_ENABLE; | |
3141 | break; | |
3142 | ||
3143 | case '-': | |
3144 | is_supported = PACKET_DISABLE; | |
3145 | break; | |
3146 | ||
3147 | case '?': | |
3148 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
3149 | break; | |
3150 | ||
3151 | default: | |
3152 | warning (_("unrecognized item \"%s\" in \"qSupported\" response"), p); | |
3153 | continue; | |
3154 | } | |
3155 | end[-1] = '\0'; | |
3156 | } | |
3157 | ||
3158 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
3159 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
3160 | { | |
3161 | const struct protocol_feature *feature; | |
3162 | ||
3163 | seen[i] = 1; | |
3164 | feature = &remote_protocol_features[i]; | |
3165 | feature->func (feature, is_supported, value); | |
3166 | break; | |
3167 | } | |
3168 | } | |
3169 | ||
3170 | /* If we increased the packet size, make sure to increase the global | |
3171 | buffer size also. We delay this until after parsing the entire | |
3172 | qSupported packet, because this is the same buffer we were | |
3173 | parsing. */ | |
3174 | if (rs->buf_size < rs->explicit_packet_size) | |
3175 | { | |
3176 | rs->buf_size = rs->explicit_packet_size; | |
3177 | rs->buf = xrealloc (rs->buf, rs->buf_size); | |
3178 | } | |
3179 | ||
3180 | /* Handle the defaults for unmentioned features. */ | |
3181 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
3182 | if (!seen[i]) | |
3183 | { | |
3184 | const struct protocol_feature *feature; | |
3185 | ||
3186 | feature = &remote_protocol_features[i]; | |
3187 | feature->func (feature, feature->default_support, NULL); | |
3188 | } | |
3189 | } | |
3190 | ||
3191 | ||
c906108c | 3192 | static void |
75c99385 | 3193 | remote_open_1 (char *name, int from_tty, struct target_ops *target, int extended_p) |
c906108c | 3194 | { |
d01949b6 | 3195 | struct remote_state *rs = get_remote_state (); |
a6f3e723 | 3196 | |
c906108c | 3197 | if (name == 0) |
8a3fe4f8 | 3198 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 3199 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 3200 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 3201 | |
23860348 | 3202 | /* See FIXME above. */ |
c6ebd6cf | 3203 | if (!target_async_permitted) |
92d1e331 | 3204 | wait_forever_enabled_p = 1; |
6426a772 | 3205 | |
2d717e4f DJ |
3206 | /* If we're connected to a running target, target_preopen will kill it. |
3207 | But if we're connected to a target system with no running process, | |
3208 | then we will still be connected when it returns. Ask this question | |
3209 | first, before target_preopen has a chance to kill anything. */ | |
c35b1492 | 3210 | if (remote_desc != NULL && !have_inferiors ()) |
2d717e4f DJ |
3211 | { |
3212 | if (!from_tty | |
3213 | || query (_("Already connected to a remote target. Disconnect? "))) | |
3214 | pop_target (); | |
3215 | else | |
3216 | error (_("Still connected.")); | |
3217 | } | |
3218 | ||
c906108c SS |
3219 | target_preopen (from_tty); |
3220 | ||
3221 | unpush_target (target); | |
3222 | ||
2d717e4f DJ |
3223 | /* This time without a query. If we were connected to an |
3224 | extended-remote target and target_preopen killed the running | |
3225 | process, we may still be connected. If we are starting "target | |
3226 | remote" now, the extended-remote target will not have been | |
3227 | removed by unpush_target. */ | |
c35b1492 | 3228 | if (remote_desc != NULL && !have_inferiors ()) |
2d717e4f DJ |
3229 | pop_target (); |
3230 | ||
89be2091 DJ |
3231 | /* Make sure we send the passed signals list the next time we resume. */ |
3232 | xfree (last_pass_packet); | |
3233 | last_pass_packet = NULL; | |
3234 | ||
ad9a8f3f | 3235 | remote_fileio_reset (); |
1dd41f16 NS |
3236 | reopen_exec_file (); |
3237 | reread_symbols (); | |
3238 | ||
9db8d71f | 3239 | remote_desc = remote_serial_open (name); |
c906108c SS |
3240 | if (!remote_desc) |
3241 | perror_with_name (name); | |
3242 | ||
3243 | if (baud_rate != -1) | |
3244 | { | |
2cd58942 | 3245 | if (serial_setbaudrate (remote_desc, baud_rate)) |
c906108c | 3246 | { |
9b74d5d3 KB |
3247 | /* The requested speed could not be set. Error out to |
3248 | top level after closing remote_desc. Take care to | |
3249 | set remote_desc to NULL to avoid closing remote_desc | |
3250 | more than once. */ | |
2cd58942 | 3251 | serial_close (remote_desc); |
9b74d5d3 | 3252 | remote_desc = NULL; |
c906108c SS |
3253 | perror_with_name (name); |
3254 | } | |
3255 | } | |
3256 | ||
2cd58942 | 3257 | serial_raw (remote_desc); |
c906108c SS |
3258 | |
3259 | /* If there is something sitting in the buffer we might take it as a | |
3260 | response to a command, which would be bad. */ | |
2cd58942 | 3261 | serial_flush_input (remote_desc); |
c906108c SS |
3262 | |
3263 | if (from_tty) | |
3264 | { | |
3265 | puts_filtered ("Remote debugging using "); | |
3266 | puts_filtered (name); | |
3267 | puts_filtered ("\n"); | |
3268 | } | |
23860348 | 3269 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 3270 | |
74531fed PA |
3271 | /* Register extra event sources in the event loop. */ |
3272 | remote_async_inferior_event_token | |
3273 | = create_async_event_handler (remote_async_inferior_event_handler, | |
3274 | NULL); | |
3275 | remote_async_get_pending_events_token | |
3276 | = create_async_event_handler (remote_async_get_pending_events_handler, | |
3277 | NULL); | |
3278 | ||
be2a5f71 DJ |
3279 | /* Reset the target state; these things will be queried either by |
3280 | remote_query_supported or as they are needed. */ | |
d471ea57 | 3281 | init_all_packet_configs (); |
74531fed | 3282 | rs->cached_wait_status = 0; |
be2a5f71 | 3283 | rs->explicit_packet_size = 0; |
a6f3e723 | 3284 | rs->noack_mode = 0; |
82f73884 PA |
3285 | rs->multi_process_aware = 0; |
3286 | rs->extended = extended_p; | |
74531fed | 3287 | rs->non_stop_aware = 0; |
e24a49d8 | 3288 | rs->waiting_for_stop_reply = 0; |
802188a7 | 3289 | |
79d7f229 PA |
3290 | general_thread = not_sent_ptid; |
3291 | continue_thread = not_sent_ptid; | |
c906108c | 3292 | |
9d1f7ab2 MS |
3293 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
3294 | use_threadinfo_query = 1; | |
3295 | use_threadextra_query = 1; | |
3296 | ||
c6ebd6cf | 3297 | if (target_async_permitted) |
92d1e331 | 3298 | { |
23860348 | 3299 | /* With this target we start out by owning the terminal. */ |
92d1e331 DJ |
3300 | remote_async_terminal_ours_p = 1; |
3301 | ||
3302 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
3303 | assumed that the target is already ready and able to respond to | |
3304 | requests. Unfortunately remote_start_remote() eventually calls | |
3305 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets | |
3306 | around this. Eventually a mechanism that allows | |
3307 | wait_for_inferior() to expect/get timeouts will be | |
23860348 | 3308 | implemented. */ |
92d1e331 DJ |
3309 | wait_forever_enabled_p = 0; |
3310 | } | |
3311 | ||
23860348 | 3312 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 3313 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 3314 | |
74531fed PA |
3315 | /* Start afresh. */ |
3316 | init_thread_list (); | |
3317 | ||
36918e70 | 3318 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
3319 | target (we'd otherwise be in an inconsistent state) and then |
3320 | propogate the error on up the exception chain. This ensures that | |
3321 | the caller doesn't stumble along blindly assuming that the | |
3322 | function succeeded. The CLI doesn't have this problem but other | |
3323 | UI's, such as MI do. | |
36918e70 AC |
3324 | |
3325 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
3326 | this function should return an error indication letting the | |
ce2826aa | 3327 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
3328 | ``target remote'' is directly wired to this function making that |
3329 | impossible. On a positive note, the CLI side of this problem has | |
3330 | been fixed - the function set_cmd_context() makes it possible for | |
3331 | all the ``target ....'' commands to share a common callback | |
3332 | function. See cli-dump.c. */ | |
109c3e39 | 3333 | { |
2d717e4f DJ |
3334 | struct gdb_exception ex; |
3335 | struct start_remote_args args; | |
3336 | ||
3337 | args.from_tty = from_tty; | |
3338 | args.target = target; | |
3339 | args.extended_p = extended_p; | |
3340 | ||
3341 | ex = catch_exception (uiout, remote_start_remote, &args, RETURN_MASK_ALL); | |
109c3e39 AC |
3342 | if (ex.reason < 0) |
3343 | { | |
c8d104ad PA |
3344 | /* Pop the partially set up target - unless something else did |
3345 | already before throwing the exception. */ | |
3346 | if (remote_desc != NULL) | |
3347 | pop_target (); | |
c6ebd6cf | 3348 | if (target_async_permitted) |
109c3e39 AC |
3349 | wait_forever_enabled_p = 1; |
3350 | throw_exception (ex); | |
3351 | } | |
3352 | } | |
c906108c | 3353 | |
c6ebd6cf | 3354 | if (target_async_permitted) |
92d1e331 | 3355 | wait_forever_enabled_p = 1; |
43ff13b4 JM |
3356 | } |
3357 | ||
c906108c SS |
3358 | /* This takes a program previously attached to and detaches it. After |
3359 | this is done, GDB can be used to debug some other program. We | |
3360 | better not have left any breakpoints in the target program or it'll | |
3361 | die when it hits one. */ | |
3362 | ||
3363 | static void | |
2d717e4f | 3364 | remote_detach_1 (char *args, int from_tty, int extended) |
c906108c | 3365 | { |
82f73884 | 3366 | int pid = ptid_get_pid (inferior_ptid); |
d01949b6 | 3367 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3368 | |
3369 | if (args) | |
8a3fe4f8 | 3370 | error (_("Argument given to \"detach\" when remotely debugging.")); |
c906108c | 3371 | |
2d717e4f DJ |
3372 | if (!target_has_execution) |
3373 | error (_("No process to detach from.")); | |
3374 | ||
c906108c | 3375 | /* Tell the remote target to detach. */ |
82f73884 PA |
3376 | if (remote_multi_process_p (rs)) |
3377 | sprintf (rs->buf, "D;%x", pid); | |
3378 | else | |
3379 | strcpy (rs->buf, "D"); | |
3380 | ||
4ddda9b5 PA |
3381 | putpkt (rs->buf); |
3382 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3383 | ||
82f73884 PA |
3384 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') |
3385 | ; | |
3386 | else if (rs->buf[0] == '\0') | |
3387 | error (_("Remote doesn't know how to detach")); | |
3388 | else | |
4ddda9b5 | 3389 | error (_("Can't detach process.")); |
c906108c | 3390 | |
c906108c | 3391 | if (from_tty) |
2d717e4f | 3392 | { |
82f73884 PA |
3393 | if (remote_multi_process_p (rs)) |
3394 | printf_filtered (_("Detached from remote %s.\n"), | |
3395 | target_pid_to_str (pid_to_ptid (pid))); | |
2d717e4f | 3396 | else |
82f73884 PA |
3397 | { |
3398 | if (extended) | |
3399 | puts_filtered (_("Detached from remote process.\n")); | |
3400 | else | |
3401 | puts_filtered (_("Ending remote debugging.\n")); | |
3402 | } | |
2d717e4f | 3403 | } |
82f73884 | 3404 | |
74531fed | 3405 | discard_pending_stop_replies (pid); |
82f73884 | 3406 | target_mourn_inferior (); |
2d717e4f DJ |
3407 | } |
3408 | ||
3409 | static void | |
136d6dae | 3410 | remote_detach (struct target_ops *ops, char *args, int from_tty) |
2d717e4f DJ |
3411 | { |
3412 | remote_detach_1 (args, from_tty, 0); | |
3413 | } | |
3414 | ||
3415 | static void | |
136d6dae | 3416 | extended_remote_detach (struct target_ops *ops, char *args, int from_tty) |
2d717e4f DJ |
3417 | { |
3418 | remote_detach_1 (args, from_tty, 1); | |
c906108c SS |
3419 | } |
3420 | ||
6ad8ae5c DJ |
3421 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
3422 | ||
43ff13b4 | 3423 | static void |
597320e7 | 3424 | remote_disconnect (struct target_ops *target, char *args, int from_tty) |
43ff13b4 | 3425 | { |
43ff13b4 | 3426 | if (args) |
2d717e4f | 3427 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 3428 | |
2d717e4f DJ |
3429 | /* Make sure we unpush even the extended remote targets; mourn |
3430 | won't do it. So call remote_mourn_1 directly instead of | |
3431 | target_mourn_inferior. */ | |
3432 | remote_mourn_1 (target); | |
3433 | ||
43ff13b4 JM |
3434 | if (from_tty) |
3435 | puts_filtered ("Ending remote debugging.\n"); | |
3436 | } | |
3437 | ||
2d717e4f DJ |
3438 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
3439 | be chatty about it. */ | |
3440 | ||
3441 | static void | |
3442 | extended_remote_attach_1 (struct target_ops *target, char *args, int from_tty) | |
3443 | { | |
3444 | struct remote_state *rs = get_remote_state (); | |
be86555c | 3445 | int pid; |
2d717e4f | 3446 | char *dummy; |
96ef3384 | 3447 | char *wait_status = NULL; |
2d717e4f DJ |
3448 | |
3449 | if (!args) | |
3450 | error_no_arg (_("process-id to attach")); | |
3451 | ||
3452 | dummy = args; | |
3453 | pid = strtol (args, &dummy, 0); | |
3454 | /* Some targets don't set errno on errors, grrr! */ | |
3455 | if (pid == 0 && args == dummy) | |
3456 | error (_("Illegal process-id: %s."), args); | |
3457 | ||
3458 | if (remote_protocol_packets[PACKET_vAttach].support == PACKET_DISABLE) | |
3459 | error (_("This target does not support attaching to a process")); | |
3460 | ||
3461 | sprintf (rs->buf, "vAttach;%x", pid); | |
3462 | putpkt (rs->buf); | |
3463 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3464 | ||
3465 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vAttach]) == PACKET_OK) | |
3466 | { | |
3467 | if (from_tty) | |
3468 | printf_unfiltered (_("Attached to %s\n"), | |
3469 | target_pid_to_str (pid_to_ptid (pid))); | |
3470 | ||
74531fed PA |
3471 | if (!non_stop) |
3472 | { | |
3473 | /* Save the reply for later. */ | |
3474 | wait_status = alloca (strlen (rs->buf) + 1); | |
3475 | strcpy (wait_status, rs->buf); | |
3476 | } | |
3477 | else if (strcmp (rs->buf, "OK") != 0) | |
3478 | error (_("Attaching to %s failed with: %s"), | |
3479 | target_pid_to_str (pid_to_ptid (pid)), | |
3480 | rs->buf); | |
2d717e4f DJ |
3481 | } |
3482 | else if (remote_protocol_packets[PACKET_vAttach].support == PACKET_DISABLE) | |
3483 | error (_("This target does not support attaching to a process")); | |
3484 | else | |
3485 | error (_("Attaching to %s failed"), | |
3486 | target_pid_to_str (pid_to_ptid (pid))); | |
3487 | ||
bad34192 PA |
3488 | remote_add_inferior (pid, 1); |
3489 | ||
2d717e4f | 3490 | inferior_ptid = pid_to_ptid (pid); |
79d7f229 | 3491 | |
bad34192 PA |
3492 | if (non_stop) |
3493 | { | |
3494 | struct thread_info *thread; | |
79d7f229 | 3495 | |
bad34192 PA |
3496 | /* Get list of threads. */ |
3497 | remote_threads_info (target); | |
82f73884 | 3498 | |
bad34192 PA |
3499 | thread = first_thread_of_process (pid); |
3500 | if (thread) | |
3501 | inferior_ptid = thread->ptid; | |
3502 | else | |
3503 | inferior_ptid = pid_to_ptid (pid); | |
3504 | ||
3505 | /* Invalidate our notion of the remote current thread. */ | |
3506 | record_currthread (minus_one_ptid); | |
3507 | } | |
74531fed | 3508 | else |
bad34192 PA |
3509 | { |
3510 | /* Now, if we have thread information, update inferior_ptid. */ | |
3511 | inferior_ptid = remote_current_thread (inferior_ptid); | |
3512 | ||
3513 | /* Add the main thread to the thread list. */ | |
3514 | add_thread_silent (inferior_ptid); | |
3515 | } | |
c0a2216e | 3516 | |
96ef3384 UW |
3517 | /* Next, if the target can specify a description, read it. We do |
3518 | this before anything involving memory or registers. */ | |
3519 | target_find_description (); | |
3520 | ||
74531fed PA |
3521 | if (!non_stop) |
3522 | { | |
3523 | /* Use the previously fetched status. */ | |
3524 | gdb_assert (wait_status != NULL); | |
3525 | ||
3526 | if (target_can_async_p ()) | |
3527 | { | |
3528 | struct stop_reply *stop_reply; | |
3529 | struct cleanup *old_chain; | |
3530 | ||
3531 | stop_reply = stop_reply_xmalloc (); | |
3532 | old_chain = make_cleanup (do_stop_reply_xfree, stop_reply); | |
3533 | remote_parse_stop_reply (wait_status, stop_reply); | |
3534 | discard_cleanups (old_chain); | |
3535 | push_stop_reply (stop_reply); | |
3536 | ||
3537 | target_async (inferior_event_handler, 0); | |
3538 | } | |
3539 | else | |
3540 | { | |
3541 | gdb_assert (wait_status != NULL); | |
3542 | strcpy (rs->buf, wait_status); | |
3543 | rs->cached_wait_status = 1; | |
3544 | } | |
3545 | } | |
3546 | else | |
3547 | gdb_assert (wait_status == NULL); | |
2d717e4f DJ |
3548 | } |
3549 | ||
3550 | static void | |
136d6dae | 3551 | extended_remote_attach (struct target_ops *ops, char *args, int from_tty) |
2d717e4f | 3552 | { |
136d6dae | 3553 | extended_remote_attach_1 (ops, args, from_tty); |
2d717e4f DJ |
3554 | } |
3555 | ||
c906108c SS |
3556 | /* Convert hex digit A to a number. */ |
3557 | ||
30559e10 | 3558 | static int |
fba45db2 | 3559 | fromhex (int a) |
c906108c SS |
3560 | { |
3561 | if (a >= '0' && a <= '9') | |
3562 | return a - '0'; | |
3563 | else if (a >= 'a' && a <= 'f') | |
3564 | return a - 'a' + 10; | |
3565 | else if (a >= 'A' && a <= 'F') | |
3566 | return a - 'A' + 10; | |
c5aa993b | 3567 | else |
8a3fe4f8 | 3568 | error (_("Reply contains invalid hex digit %d"), a); |
c906108c SS |
3569 | } |
3570 | ||
30559e10 | 3571 | static int |
cfd77fa1 | 3572 | hex2bin (const char *hex, gdb_byte *bin, int count) |
30559e10 MS |
3573 | { |
3574 | int i; | |
3575 | ||
30559e10 MS |
3576 | for (i = 0; i < count; i++) |
3577 | { | |
3578 | if (hex[0] == 0 || hex[1] == 0) | |
3579 | { | |
3580 | /* Hex string is short, or of uneven length. | |
23860348 | 3581 | Return the count that has been converted so far. */ |
30559e10 MS |
3582 | return i; |
3583 | } | |
3584 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); | |
3585 | hex += 2; | |
3586 | } | |
3587 | return i; | |
3588 | } | |
3589 | ||
c906108c SS |
3590 | /* Convert number NIB to a hex digit. */ |
3591 | ||
3592 | static int | |
fba45db2 | 3593 | tohex (int nib) |
c906108c SS |
3594 | { |
3595 | if (nib < 10) | |
c5aa993b | 3596 | return '0' + nib; |
c906108c | 3597 | else |
c5aa993b | 3598 | return 'a' + nib - 10; |
c906108c | 3599 | } |
30559e10 MS |
3600 | |
3601 | static int | |
cfd77fa1 | 3602 | bin2hex (const gdb_byte *bin, char *hex, int count) |
30559e10 MS |
3603 | { |
3604 | int i; | |
23860348 | 3605 | /* May use a length, or a nul-terminated string as input. */ |
30559e10 | 3606 | if (count == 0) |
cfd77fa1 | 3607 | count = strlen ((char *) bin); |
30559e10 MS |
3608 | |
3609 | for (i = 0; i < count; i++) | |
3610 | { | |
3611 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
3612 | *hex++ = tohex (*bin++ & 0xf); | |
3613 | } | |
3614 | *hex = 0; | |
3615 | return i; | |
3616 | } | |
c906108c | 3617 | \f |
506fb367 DJ |
3618 | /* Check for the availability of vCont. This function should also check |
3619 | the response. */ | |
c906108c SS |
3620 | |
3621 | static void | |
6d820c5c | 3622 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 3623 | { |
2e9f7625 | 3624 | char *buf; |
6d820c5c | 3625 | |
2e9f7625 DJ |
3626 | strcpy (rs->buf, "vCont?"); |
3627 | putpkt (rs->buf); | |
6d820c5c | 3628 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3629 | buf = rs->buf; |
c906108c | 3630 | |
506fb367 DJ |
3631 | /* Make sure that the features we assume are supported. */ |
3632 | if (strncmp (buf, "vCont", 5) == 0) | |
3633 | { | |
3634 | char *p = &buf[5]; | |
3635 | int support_s, support_S, support_c, support_C; | |
3636 | ||
3637 | support_s = 0; | |
3638 | support_S = 0; | |
3639 | support_c = 0; | |
3640 | support_C = 0; | |
74531fed | 3641 | rs->support_vCont_t = 0; |
506fb367 DJ |
3642 | while (p && *p == ';') |
3643 | { | |
3644 | p++; | |
3645 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
3646 | support_s = 1; | |
3647 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
3648 | support_S = 1; | |
3649 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
3650 | support_c = 1; | |
3651 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
3652 | support_C = 1; | |
74531fed PA |
3653 | else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0)) |
3654 | rs->support_vCont_t = 1; | |
506fb367 DJ |
3655 | |
3656 | p = strchr (p, ';'); | |
3657 | } | |
c906108c | 3658 | |
506fb367 DJ |
3659 | /* If s, S, c, and C are not all supported, we can't use vCont. Clearing |
3660 | BUF will make packet_ok disable the packet. */ | |
3661 | if (!support_s || !support_S || !support_c || !support_C) | |
3662 | buf[0] = 0; | |
3663 | } | |
c906108c | 3664 | |
444abaca | 3665 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 3666 | } |
c906108c | 3667 | |
0d8f58ca PA |
3668 | /* Helper function for building "vCont" resumptions. Write a |
3669 | resumption to P. ENDP points to one-passed-the-end of the buffer | |
3670 | we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The | |
3671 | thread to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
3672 | resumed thread should be single-stepped and/or signalled. If PTID | |
3673 | equals minus_one_ptid, then all threads are resumed; if PTID | |
3674 | represents a process, then all threads of the process are resumed; | |
3675 | the thread to be stepped and/or signalled is given in the global | |
3676 | INFERIOR_PTID. */ | |
3677 | ||
3678 | static char * | |
3679 | append_resumption (char *p, char *endp, | |
3680 | ptid_t ptid, int step, enum target_signal siggnal) | |
3681 | { | |
3682 | struct remote_state *rs = get_remote_state (); | |
3683 | ||
3684 | if (step && siggnal != TARGET_SIGNAL_0) | |
3685 | p += xsnprintf (p, endp - p, ";S%02x", siggnal); | |
3686 | else if (step) | |
3687 | p += xsnprintf (p, endp - p, ";s"); | |
3688 | else if (siggnal != TARGET_SIGNAL_0) | |
3689 | p += xsnprintf (p, endp - p, ";C%02x", siggnal); | |
3690 | else | |
3691 | p += xsnprintf (p, endp - p, ";c"); | |
3692 | ||
3693 | if (remote_multi_process_p (rs) && ptid_is_pid (ptid)) | |
3694 | { | |
3695 | ptid_t nptid; | |
3696 | ||
3697 | /* All (-1) threads of process. */ | |
3698 | nptid = ptid_build (ptid_get_pid (ptid), 0, -1); | |
3699 | ||
3700 | p += xsnprintf (p, endp - p, ":"); | |
3701 | p = write_ptid (p, endp, nptid); | |
3702 | } | |
3703 | else if (!ptid_equal (ptid, minus_one_ptid)) | |
3704 | { | |
3705 | p += xsnprintf (p, endp - p, ":"); | |
3706 | p = write_ptid (p, endp, ptid); | |
3707 | } | |
3708 | ||
3709 | return p; | |
3710 | } | |
3711 | ||
506fb367 DJ |
3712 | /* Resume the remote inferior by using a "vCont" packet. The thread |
3713 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
79d7f229 PA |
3714 | resumed thread should be single-stepped and/or signalled. If PTID |
3715 | equals minus_one_ptid, then all threads are resumed; the thread to | |
3716 | be stepped and/or signalled is given in the global INFERIOR_PTID. | |
3717 | This function returns non-zero iff it resumes the inferior. | |
44eaed12 | 3718 | |
506fb367 DJ |
3719 | This function issues a strict subset of all possible vCont commands at the |
3720 | moment. */ | |
44eaed12 | 3721 | |
506fb367 DJ |
3722 | static int |
3723 | remote_vcont_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
3724 | { | |
3725 | struct remote_state *rs = get_remote_state (); | |
82f73884 PA |
3726 | char *p; |
3727 | char *endp; | |
44eaed12 | 3728 | |
444abaca | 3729 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 3730 | remote_vcont_probe (rs); |
44eaed12 | 3731 | |
444abaca | 3732 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_DISABLE) |
6d820c5c | 3733 | return 0; |
44eaed12 | 3734 | |
82f73884 PA |
3735 | p = rs->buf; |
3736 | endp = rs->buf + get_remote_packet_size (); | |
3737 | ||
506fb367 DJ |
3738 | /* If we could generate a wider range of packets, we'd have to worry |
3739 | about overflowing BUF. Should there be a generic | |
3740 | "multi-part-packet" packet? */ | |
3741 | ||
0d8f58ca PA |
3742 | p += xsnprintf (p, endp - p, "vCont"); |
3743 | ||
79d7f229 | 3744 | if (ptid_equal (ptid, magic_null_ptid)) |
c906108c | 3745 | { |
79d7f229 PA |
3746 | /* MAGIC_NULL_PTID means that we don't have any active threads, |
3747 | so we don't have any TID numbers the inferior will | |
3748 | understand. Make sure to only send forms that do not specify | |
3749 | a TID. */ | |
0d8f58ca | 3750 | p = append_resumption (p, endp, minus_one_ptid, step, siggnal); |
506fb367 | 3751 | } |
0d8f58ca | 3752 | else if (ptid_equal (ptid, minus_one_ptid) || ptid_is_pid (ptid)) |
506fb367 | 3753 | { |
0d8f58ca PA |
3754 | /* Resume all threads (of all processes, or of a single |
3755 | process), with preference for INFERIOR_PTID. This assumes | |
3756 | inferior_ptid belongs to the set of all threads we are about | |
3757 | to resume. */ | |
3758 | if (step || siggnal != TARGET_SIGNAL_0) | |
82f73884 | 3759 | { |
0d8f58ca PA |
3760 | /* Step inferior_ptid, with or without signal. */ |
3761 | p = append_resumption (p, endp, inferior_ptid, step, siggnal); | |
82f73884 | 3762 | } |
0d8f58ca PA |
3763 | |
3764 | /* And continue others without a signal. */ | |
3765 | p = append_resumption (p, endp, ptid, /*step=*/ 0, TARGET_SIGNAL_0); | |
c906108c SS |
3766 | } |
3767 | else | |
506fb367 DJ |
3768 | { |
3769 | /* Scheduler locking; resume only PTID. */ | |
0d8f58ca | 3770 | p = append_resumption (p, endp, ptid, step, siggnal); |
506fb367 | 3771 | } |
c906108c | 3772 | |
82f73884 PA |
3773 | gdb_assert (strlen (rs->buf) < get_remote_packet_size ()); |
3774 | putpkt (rs->buf); | |
506fb367 | 3775 | |
74531fed PA |
3776 | if (non_stop) |
3777 | { | |
3778 | /* In non-stop, the stub replies to vCont with "OK". The stop | |
3779 | reply will be reported asynchronously by means of a `%Stop' | |
3780 | notification. */ | |
3781 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3782 | if (strcmp (rs->buf, "OK") != 0) | |
3783 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf); | |
3784 | } | |
3785 | ||
506fb367 | 3786 | return 1; |
c906108c | 3787 | } |
43ff13b4 | 3788 | |
506fb367 DJ |
3789 | /* Tell the remote machine to resume. */ |
3790 | ||
3791 | static enum target_signal last_sent_signal = TARGET_SIGNAL_0; | |
3792 | ||
3793 | static int last_sent_step; | |
3794 | ||
43ff13b4 | 3795 | static void |
28439f5e PA |
3796 | remote_resume (struct target_ops *ops, |
3797 | ptid_t ptid, int step, enum target_signal siggnal) | |
43ff13b4 | 3798 | { |
d01949b6 | 3799 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 3800 | char *buf; |
43ff13b4 | 3801 | |
43ff13b4 JM |
3802 | last_sent_signal = siggnal; |
3803 | last_sent_step = step; | |
3804 | ||
89be2091 DJ |
3805 | /* Update the inferior on signals to silently pass, if they've changed. */ |
3806 | remote_pass_signals (); | |
3807 | ||
506fb367 DJ |
3808 | /* The vCont packet doesn't need to specify threads via Hc. */ |
3809 | if (remote_vcont_resume (ptid, step, siggnal)) | |
75c99385 | 3810 | goto done; |
506fb367 | 3811 | |
79d7f229 PA |
3812 | /* All other supported resume packets do use Hc, so set the continue |
3813 | thread. */ | |
3814 | if (ptid_equal (ptid, minus_one_ptid)) | |
3815 | set_continue_thread (any_thread_ptid); | |
506fb367 | 3816 | else |
79d7f229 | 3817 | set_continue_thread (ptid); |
506fb367 | 3818 | |
2e9f7625 | 3819 | buf = rs->buf; |
b2175913 MS |
3820 | if (execution_direction == EXEC_REVERSE) |
3821 | { | |
3822 | /* We don't pass signals to the target in reverse exec mode. */ | |
3823 | if (info_verbose && siggnal != TARGET_SIGNAL_0) | |
3824 | warning (" - Can't pass signal %d to target in reverse: ignored.\n", | |
3825 | siggnal); | |
3826 | strcpy (buf, step ? "bs" : "bc"); | |
3827 | } | |
3828 | else if (siggnal != TARGET_SIGNAL_0) | |
43ff13b4 JM |
3829 | { |
3830 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 3831 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 3832 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
3833 | buf[3] = '\0'; |
3834 | } | |
3835 | else | |
c5aa993b | 3836 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 3837 | |
44eaed12 | 3838 | putpkt (buf); |
43ff13b4 | 3839 | |
75c99385 | 3840 | done: |
2acceee2 JM |
3841 | /* We are about to start executing the inferior, let's register it |
3842 | with the event loop. NOTE: this is the one place where all the | |
3843 | execution commands end up. We could alternatively do this in each | |
23860348 | 3844 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
3845 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
3846 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 3847 | NOT asynchronously. */ |
362646f5 | 3848 | if (target_can_async_p ()) |
2acceee2 | 3849 | target_async (inferior_event_handler, 0); |
e24a49d8 PA |
3850 | |
3851 | /* We've just told the target to resume. The remote server will | |
3852 | wait for the inferior to stop, and then send a stop reply. In | |
3853 | the mean time, we can't start another command/query ourselves | |
74531fed PA |
3854 | because the stub wouldn't be ready to process it. This applies |
3855 | only to the base all-stop protocol, however. In non-stop (which | |
3856 | only supports vCont), the stub replies with an "OK", and is | |
3857 | immediate able to process further serial input. */ | |
3858 | if (!non_stop) | |
3859 | rs->waiting_for_stop_reply = 1; | |
43ff13b4 | 3860 | } |
c906108c | 3861 | \f |
43ff13b4 JM |
3862 | |
3863 | /* Set up the signal handler for SIGINT, while the target is | |
23860348 | 3864 | executing, ovewriting the 'regular' SIGINT signal handler. */ |
43ff13b4 | 3865 | static void |
fba45db2 | 3866 | initialize_sigint_signal_handler (void) |
43ff13b4 | 3867 | { |
43ff13b4 JM |
3868 | signal (SIGINT, handle_remote_sigint); |
3869 | } | |
3870 | ||
23860348 | 3871 | /* Signal handler for SIGINT, while the target is executing. */ |
43ff13b4 | 3872 | static void |
fba45db2 | 3873 | handle_remote_sigint (int sig) |
43ff13b4 JM |
3874 | { |
3875 | signal (sig, handle_remote_sigint_twice); | |
43ff13b4 JM |
3876 | mark_async_signal_handler_wrapper (sigint_remote_token); |
3877 | } | |
3878 | ||
3879 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
3880 | sent once. It will take effect the second time that the user sends | |
23860348 | 3881 | a ^C. */ |
43ff13b4 | 3882 | static void |
fba45db2 | 3883 | handle_remote_sigint_twice (int sig) |
43ff13b4 | 3884 | { |
b803fb0f | 3885 | signal (sig, handle_remote_sigint); |
43ff13b4 JM |
3886 | mark_async_signal_handler_wrapper (sigint_remote_twice_token); |
3887 | } | |
3888 | ||
6426a772 | 3889 | /* Perform the real interruption of the target execution, in response |
23860348 | 3890 | to a ^C. */ |
c5aa993b | 3891 | static void |
fba45db2 | 3892 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
3893 | { |
3894 | if (remote_debug) | |
3895 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
3896 | ||
94cc34af | 3897 | target_stop (inferior_ptid); |
43ff13b4 JM |
3898 | } |
3899 | ||
3900 | /* Perform interrupt, if the first attempt did not succeed. Just give | |
23860348 | 3901 | up on the target alltogether. */ |
2df3850c | 3902 | void |
fba45db2 | 3903 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 3904 | { |
2df3850c JM |
3905 | if (remote_debug) |
3906 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt_twice called\n"); | |
b803fb0f DJ |
3907 | |
3908 | interrupt_query (); | |
43ff13b4 JM |
3909 | } |
3910 | ||
3911 | /* Reinstall the usual SIGINT handlers, after the target has | |
23860348 | 3912 | stopped. */ |
6426a772 JM |
3913 | static void |
3914 | cleanup_sigint_signal_handler (void *dummy) | |
43ff13b4 JM |
3915 | { |
3916 | signal (SIGINT, handle_sigint); | |
43ff13b4 JM |
3917 | } |
3918 | ||
c906108c SS |
3919 | /* Send ^C to target to halt it. Target will respond, and send us a |
3920 | packet. */ | |
507f3c78 | 3921 | static void (*ofunc) (int); |
c906108c | 3922 | |
7a292a7a SS |
3923 | /* The command line interface's stop routine. This function is installed |
3924 | as a signal handler for SIGINT. The first time a user requests a | |
3925 | stop, we call remote_stop to send a break or ^C. If there is no | |
3926 | response from the target (it didn't stop when the user requested it), | |
23860348 | 3927 | we ask the user if he'd like to detach from the target. */ |
c906108c | 3928 | static void |
fba45db2 | 3929 | remote_interrupt (int signo) |
c906108c | 3930 | { |
23860348 | 3931 | /* If this doesn't work, try more severe steps. */ |
7a292a7a SS |
3932 | signal (signo, remote_interrupt_twice); |
3933 | ||
b803fb0f | 3934 | gdb_call_async_signal_handler (sigint_remote_token, 1); |
7a292a7a SS |
3935 | } |
3936 | ||
3937 | /* The user typed ^C twice. */ | |
3938 | ||
3939 | static void | |
fba45db2 | 3940 | remote_interrupt_twice (int signo) |
7a292a7a SS |
3941 | { |
3942 | signal (signo, ofunc); | |
b803fb0f | 3943 | gdb_call_async_signal_handler (sigint_remote_twice_token, 1); |
c906108c SS |
3944 | signal (signo, remote_interrupt); |
3945 | } | |
7a292a7a | 3946 | |
74531fed PA |
3947 | /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote |
3948 | thread, all threads of a remote process, or all threads of all | |
3949 | processes. */ | |
3950 | ||
3951 | static void | |
3952 | remote_stop_ns (ptid_t ptid) | |
3953 | { | |
3954 | struct remote_state *rs = get_remote_state (); | |
3955 | char *p = rs->buf; | |
3956 | char *endp = rs->buf + get_remote_packet_size (); | |
3957 | struct stop_reply *reply, *next; | |
3958 | ||
3959 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN) | |
3960 | remote_vcont_probe (rs); | |
3961 | ||
3962 | if (!rs->support_vCont_t) | |
3963 | error (_("Remote server does not support stopping threads")); | |
3964 | ||
f91d3df5 PA |
3965 | if (ptid_equal (ptid, minus_one_ptid) |
3966 | || (!remote_multi_process_p (rs) && ptid_is_pid (ptid))) | |
74531fed PA |
3967 | p += xsnprintf (p, endp - p, "vCont;t"); |
3968 | else | |
3969 | { | |
3970 | ptid_t nptid; | |
3971 | ||
74531fed PA |
3972 | p += xsnprintf (p, endp - p, "vCont;t:"); |
3973 | ||
3974 | if (ptid_is_pid (ptid)) | |
3975 | /* All (-1) threads of process. */ | |
3976 | nptid = ptid_build (ptid_get_pid (ptid), 0, -1); | |
3977 | else | |
3978 | { | |
3979 | /* Small optimization: if we already have a stop reply for | |
3980 | this thread, no use in telling the stub we want this | |
3981 | stopped. */ | |
3982 | if (peek_stop_reply (ptid)) | |
3983 | return; | |
3984 | ||
3985 | nptid = ptid; | |
3986 | } | |
3987 | ||
3988 | p = write_ptid (p, endp, nptid); | |
3989 | } | |
3990 | ||
3991 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
3992 | come in asynchronously by notification. */ | |
3993 | putpkt (rs->buf); | |
3994 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3995 | if (strcmp (rs->buf, "OK") != 0) | |
3996 | error (_("Stopping %s failed: %s"), target_pid_to_str (ptid), rs->buf); | |
3997 | } | |
3998 | ||
3999 | /* All-stop version of target_stop. Sends a break or a ^C to stop the | |
4000 | remote target. It is undefined which thread of which process | |
4001 | reports the stop. */ | |
4002 | ||
4003 | static void | |
4004 | remote_stop_as (ptid_t ptid) | |
4005 | { | |
4006 | struct remote_state *rs = get_remote_state (); | |
4007 | ||
4008 | /* If the inferior is stopped already, but the core didn't know | |
4009 | about it yet, just ignore the request. The cached wait status | |
4010 | will be collected in remote_wait. */ | |
4011 | if (rs->cached_wait_status) | |
4012 | return; | |
4013 | ||
4014 | /* Send a break or a ^C, depending on user preference. */ | |
4015 | ||
4016 | if (remote_break) | |
4017 | serial_send_break (remote_desc); | |
4018 | else | |
4019 | serial_write (remote_desc, "\003", 1); | |
4020 | } | |
4021 | ||
7a292a7a SS |
4022 | /* This is the generic stop called via the target vector. When a target |
4023 | interrupt is requested, either by the command line or the GUI, we | |
23860348 | 4024 | will eventually end up here. */ |
74531fed | 4025 | |
c906108c | 4026 | static void |
94cc34af | 4027 | remote_stop (ptid_t ptid) |
c906108c | 4028 | { |
7a292a7a | 4029 | if (remote_debug) |
0f71a2f6 | 4030 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 4031 | |
74531fed PA |
4032 | if (non_stop) |
4033 | remote_stop_ns (ptid); | |
c906108c | 4034 | else |
74531fed | 4035 | remote_stop_as (ptid); |
c906108c SS |
4036 | } |
4037 | ||
4038 | /* Ask the user what to do when an interrupt is received. */ | |
4039 | ||
4040 | static void | |
fba45db2 | 4041 | interrupt_query (void) |
c906108c SS |
4042 | { |
4043 | target_terminal_ours (); | |
4044 | ||
74531fed | 4045 | if (target_can_async_p ()) |
c906108c | 4046 | { |
74531fed | 4047 | signal (SIGINT, handle_sigint); |
315a522e | 4048 | deprecated_throw_reason (RETURN_QUIT); |
c906108c | 4049 | } |
74531fed PA |
4050 | else |
4051 | { | |
9e2f0ad4 HZ |
4052 | if (query (_("Interrupted while waiting for the program.\n\ |
4053 | Give up (and stop debugging it)? "))) | |
74531fed PA |
4054 | { |
4055 | pop_target (); | |
4056 | deprecated_throw_reason (RETURN_QUIT); | |
4057 | } | |
4058 | } | |
c906108c SS |
4059 | |
4060 | target_terminal_inferior (); | |
4061 | } | |
4062 | ||
6426a772 JM |
4063 | /* Enable/disable target terminal ownership. Most targets can use |
4064 | terminal groups to control terminal ownership. Remote targets are | |
4065 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 4066 | is required. */ |
6426a772 JM |
4067 | |
4068 | static void | |
75c99385 | 4069 | remote_terminal_inferior (void) |
6426a772 | 4070 | { |
c6ebd6cf | 4071 | if (!target_async_permitted) |
75c99385 PA |
4072 | /* Nothing to do. */ |
4073 | return; | |
4074 | ||
d9d2d8b6 PA |
4075 | /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*() |
4076 | idempotent. The event-loop GDB talking to an asynchronous target | |
4077 | with a synchronous command calls this function from both | |
4078 | event-top.c and infrun.c/infcmd.c. Once GDB stops trying to | |
4079 | transfer the terminal to the target when it shouldn't this guard | |
4080 | can go away. */ | |
6426a772 JM |
4081 | if (!remote_async_terminal_ours_p) |
4082 | return; | |
4083 | delete_file_handler (input_fd); | |
4084 | remote_async_terminal_ours_p = 0; | |
4085 | initialize_sigint_signal_handler (); | |
4086 | /* NOTE: At this point we could also register our selves as the | |
4087 | recipient of all input. Any characters typed could then be | |
23860348 | 4088 | passed on down to the target. */ |
6426a772 JM |
4089 | } |
4090 | ||
4091 | static void | |
75c99385 | 4092 | remote_terminal_ours (void) |
6426a772 | 4093 | { |
c6ebd6cf | 4094 | if (!target_async_permitted) |
75c99385 PA |
4095 | /* Nothing to do. */ |
4096 | return; | |
4097 | ||
4098 | /* See FIXME in remote_terminal_inferior. */ | |
6426a772 JM |
4099 | if (remote_async_terminal_ours_p) |
4100 | return; | |
4101 | cleanup_sigint_signal_handler (NULL); | |
4102 | add_file_handler (input_fd, stdin_event_handler, 0); | |
4103 | remote_async_terminal_ours_p = 1; | |
4104 | } | |
4105 | ||
c906108c | 4106 | void |
917317f4 | 4107 | remote_console_output (char *msg) |
c906108c SS |
4108 | { |
4109 | char *p; | |
4110 | ||
c5aa993b | 4111 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
4112 | { |
4113 | char tb[2]; | |
4114 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
4115 | tb[0] = c; | |
4116 | tb[1] = 0; | |
43ff13b4 | 4117 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 4118 | } |
74531fed PA |
4119 | gdb_flush (gdb_stdtarg); |
4120 | } | |
4121 | ||
4122 | typedef struct cached_reg | |
4123 | { | |
4124 | int num; | |
4125 | gdb_byte data[MAX_REGISTER_SIZE]; | |
4126 | } cached_reg_t; | |
4127 | ||
4128 | DEF_VEC_O(cached_reg_t); | |
4129 | ||
4130 | struct stop_reply | |
4131 | { | |
4132 | struct stop_reply *next; | |
4133 | ||
4134 | ptid_t ptid; | |
4135 | ||
4136 | struct target_waitstatus ws; | |
4137 | ||
4138 | VEC(cached_reg_t) *regcache; | |
4139 | ||
4140 | int stopped_by_watchpoint_p; | |
4141 | CORE_ADDR watch_data_address; | |
4142 | ||
4143 | int solibs_changed; | |
4144 | int replay_event; | |
4145 | }; | |
4146 | ||
4147 | /* The list of already fetched and acknowledged stop events. */ | |
4148 | static struct stop_reply *stop_reply_queue; | |
4149 | ||
4150 | static struct stop_reply * | |
4151 | stop_reply_xmalloc (void) | |
4152 | { | |
4153 | struct stop_reply *r = XMALLOC (struct stop_reply); | |
4154 | r->next = NULL; | |
4155 | return r; | |
4156 | } | |
4157 | ||
4158 | static void | |
4159 | stop_reply_xfree (struct stop_reply *r) | |
4160 | { | |
4161 | if (r != NULL) | |
4162 | { | |
4163 | VEC_free (cached_reg_t, r->regcache); | |
4164 | xfree (r); | |
4165 | } | |
c906108c SS |
4166 | } |
4167 | ||
74531fed PA |
4168 | /* Discard all pending stop replies of inferior PID. If PID is -1, |
4169 | discard everything. */ | |
c906108c | 4170 | |
74531fed PA |
4171 | static void |
4172 | discard_pending_stop_replies (int pid) | |
c906108c | 4173 | { |
74531fed | 4174 | struct stop_reply *prev = NULL, *reply, *next; |
c906108c | 4175 | |
74531fed PA |
4176 | /* Discard the in-flight notification. */ |
4177 | if (pending_stop_reply != NULL | |
4178 | && (pid == -1 | |
4179 | || ptid_get_pid (pending_stop_reply->ptid) == pid)) | |
4180 | { | |
4181 | stop_reply_xfree (pending_stop_reply); | |
4182 | pending_stop_reply = NULL; | |
4183 | } | |
c906108c | 4184 | |
74531fed PA |
4185 | /* Discard the stop replies we have already pulled with |
4186 | vStopped. */ | |
4187 | for (reply = stop_reply_queue; reply; reply = next) | |
43ff13b4 | 4188 | { |
74531fed PA |
4189 | next = reply->next; |
4190 | if (pid == -1 | |
4191 | || ptid_get_pid (reply->ptid) == pid) | |
9fa2223d | 4192 | { |
74531fed PA |
4193 | if (reply == stop_reply_queue) |
4194 | stop_reply_queue = reply->next; | |
4195 | else | |
4196 | prev->next = reply->next; | |
4197 | ||
4198 | stop_reply_xfree (reply); | |
9fa2223d | 4199 | } |
74531fed PA |
4200 | else |
4201 | prev = reply; | |
c8e38a49 | 4202 | } |
74531fed | 4203 | } |
43ff13b4 | 4204 | |
74531fed | 4205 | /* Cleanup wrapper. */ |
2e9f7625 | 4206 | |
74531fed PA |
4207 | static void |
4208 | do_stop_reply_xfree (void *arg) | |
4209 | { | |
4210 | struct stop_reply *r = arg; | |
4211 | stop_reply_xfree (r); | |
4212 | } | |
75c99385 | 4213 | |
74531fed PA |
4214 | /* Look for a queued stop reply belonging to PTID. If one is found, |
4215 | remove it from the queue, and return it. Returns NULL if none is | |
4216 | found. If there are still queued events left to process, tell the | |
4217 | event loop to get back to target_wait soon. */ | |
e24a49d8 | 4218 | |
74531fed PA |
4219 | static struct stop_reply * |
4220 | queued_stop_reply (ptid_t ptid) | |
4221 | { | |
4222 | struct stop_reply *it, *prev; | |
4223 | struct stop_reply head; | |
4224 | ||
4225 | head.next = stop_reply_queue; | |
4226 | prev = &head; | |
4227 | ||
4228 | it = head.next; | |
4229 | ||
4230 | if (!ptid_equal (ptid, minus_one_ptid)) | |
4231 | for (; it; prev = it, it = it->next) | |
4232 | if (ptid_equal (ptid, it->ptid)) | |
4233 | break; | |
4234 | ||
4235 | if (it) | |
c8e38a49 | 4236 | { |
74531fed PA |
4237 | prev->next = it->next; |
4238 | it->next = NULL; | |
4239 | } | |
e24a49d8 | 4240 | |
74531fed PA |
4241 | stop_reply_queue = head.next; |
4242 | ||
4243 | if (stop_reply_queue) | |
4244 | /* There's still at least an event left. */ | |
4245 | mark_async_event_handler (remote_async_inferior_event_token); | |
4246 | ||
4247 | return it; | |
4248 | } | |
4249 | ||
4250 | /* Push a fully parsed stop reply in the stop reply queue. Since we | |
4251 | know that we now have at least one queued event left to pass to the | |
4252 | core side, tell the event loop to get back to target_wait soon. */ | |
4253 | ||
4254 | static void | |
4255 | push_stop_reply (struct stop_reply *new_event) | |
4256 | { | |
4257 | struct stop_reply *event; | |
4258 | ||
4259 | if (stop_reply_queue) | |
4260 | { | |
4261 | for (event = stop_reply_queue; | |
4262 | event && event->next; | |
4263 | event = event->next) | |
4264 | ; | |
4265 | ||
4266 | event->next = new_event; | |
4267 | } | |
4268 | else | |
4269 | stop_reply_queue = new_event; | |
4270 | ||
4271 | mark_async_event_handler (remote_async_inferior_event_token); | |
4272 | } | |
4273 | ||
4274 | /* Returns true if we have a stop reply for PTID. */ | |
4275 | ||
4276 | static int | |
4277 | peek_stop_reply (ptid_t ptid) | |
4278 | { | |
4279 | struct stop_reply *it; | |
4280 | ||
4281 | for (it = stop_reply_queue; it; it = it->next) | |
4282 | if (ptid_equal (ptid, it->ptid)) | |
4283 | { | |
4284 | if (it->ws.kind == TARGET_WAITKIND_STOPPED) | |
4285 | return 1; | |
4286 | } | |
4287 | ||
4288 | return 0; | |
4289 | } | |
4290 | ||
4291 | /* Parse the stop reply in BUF. Either the function succeeds, and the | |
4292 | result is stored in EVENT, or throws an error. */ | |
4293 | ||
4294 | static void | |
4295 | remote_parse_stop_reply (char *buf, struct stop_reply *event) | |
4296 | { | |
4297 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
4298 | ULONGEST addr; | |
4299 | char *p; | |
4300 | ||
4301 | event->ptid = null_ptid; | |
4302 | event->ws.kind = TARGET_WAITKIND_IGNORE; | |
4303 | event->ws.value.integer = 0; | |
4304 | event->solibs_changed = 0; | |
4305 | event->replay_event = 0; | |
4306 | event->stopped_by_watchpoint_p = 0; | |
4307 | event->regcache = NULL; | |
4308 | ||
4309 | switch (buf[0]) | |
4310 | { | |
4311 | case 'T': /* Status with PC, SP, FP, ... */ | |
c8e38a49 PA |
4312 | { |
4313 | gdb_byte regs[MAX_REGISTER_SIZE]; | |
43ff13b4 | 4314 | |
c8e38a49 PA |
4315 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
4316 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
74531fed PA |
4317 | ss = signal number |
4318 | n... = register number | |
4319 | r... = register contents | |
c8e38a49 | 4320 | */ |
43ff13b4 | 4321 | |
74531fed | 4322 | p = &buf[3]; /* after Txx */ |
c8e38a49 PA |
4323 | while (*p) |
4324 | { | |
4325 | char *p1; | |
4326 | char *p_temp; | |
4327 | int fieldsize; | |
4328 | LONGEST pnum = 0; | |
43ff13b4 | 4329 | |
c8e38a49 PA |
4330 | /* If the packet contains a register number, save it in |
4331 | pnum and set p1 to point to the character following it. | |
4332 | Otherwise p1 points to p. */ | |
3c3bea1c | 4333 | |
74531fed PA |
4334 | /* If this packet is an awatch packet, don't parse the 'a' |
4335 | as a register number. */ | |
c8e38a49 PA |
4336 | |
4337 | if (strncmp (p, "awatch", strlen("awatch")) != 0) | |
4338 | { | |
4339 | /* Read the ``P'' register number. */ | |
4340 | pnum = strtol (p, &p_temp, 16); | |
4341 | p1 = p_temp; | |
4342 | } | |
4343 | else | |
4344 | p1 = p; | |
802188a7 | 4345 | |
c8e38a49 PA |
4346 | if (p1 == p) /* No register number present here. */ |
4347 | { | |
4348 | p1 = strchr (p, ':'); | |
4349 | if (p1 == NULL) | |
4350 | error (_("Malformed packet(a) (missing colon): %s\n\ | |
4351 | Packet: '%s'\n"), | |
4352 | p, buf); | |
4353 | if (strncmp (p, "thread", p1 - p) == 0) | |
74531fed | 4354 | event->ptid = read_ptid (++p1, &p); |
c8e38a49 PA |
4355 | else if ((strncmp (p, "watch", p1 - p) == 0) |
4356 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
4357 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
3c3bea1c | 4358 | { |
74531fed | 4359 | event->stopped_by_watchpoint_p = 1; |
c8e38a49 | 4360 | p = unpack_varlen_hex (++p1, &addr); |
74531fed | 4361 | event->watch_data_address = (CORE_ADDR) addr; |
3c3bea1c | 4362 | } |
c8e38a49 | 4363 | else if (strncmp (p, "library", p1 - p) == 0) |
43ff13b4 | 4364 | { |
c8e38a49 PA |
4365 | p1++; |
4366 | p_temp = p1; | |
4367 | while (*p_temp && *p_temp != ';') | |
4368 | p_temp++; | |
4369 | ||
74531fed | 4370 | event->solibs_changed = 1; |
c8e38a49 | 4371 | p = p_temp; |
43ff13b4 | 4372 | } |
b2175913 MS |
4373 | else if (strncmp (p, "replaylog", p1 - p) == 0) |
4374 | { | |
4375 | /* NO_HISTORY event. | |
4376 | p1 will indicate "begin" or "end", but | |
4377 | it makes no difference for now, so ignore it. */ | |
74531fed | 4378 | event->replay_event = 1; |
b2175913 MS |
4379 | p_temp = strchr (p1 + 1, ';'); |
4380 | if (p_temp) | |
4381 | p = p_temp; | |
4382 | } | |
43ff13b4 JM |
4383 | else |
4384 | { | |
c8e38a49 PA |
4385 | /* Silently skip unknown optional info. */ |
4386 | p_temp = strchr (p1 + 1, ';'); | |
4387 | if (p_temp) | |
4388 | p = p_temp; | |
4389 | } | |
4390 | } | |
4391 | else | |
4392 | { | |
4393 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); | |
74531fed PA |
4394 | cached_reg_t cached_reg; |
4395 | ||
c8e38a49 | 4396 | p = p1; |
75c99385 | 4397 | |
c8e38a49 PA |
4398 | if (*p != ':') |
4399 | error (_("Malformed packet(b) (missing colon): %s\n\ | |
8a3fe4f8 | 4400 | Packet: '%s'\n"), |
c8e38a49 PA |
4401 | p, buf); |
4402 | ++p; | |
43ff13b4 | 4403 | |
c8e38a49 PA |
4404 | if (reg == NULL) |
4405 | error (_("Remote sent bad register number %s: %s\n\ | |
8a3fe4f8 | 4406 | Packet: '%s'\n"), |
c8e38a49 PA |
4407 | phex_nz (pnum, 0), p, buf); |
4408 | ||
4100683b JK |
4409 | cached_reg.num = reg->regnum; |
4410 | ||
74531fed | 4411 | fieldsize = hex2bin (p, cached_reg.data, |
c8e38a49 PA |
4412 | register_size (target_gdbarch, |
4413 | reg->regnum)); | |
4414 | p += 2 * fieldsize; | |
4415 | if (fieldsize < register_size (target_gdbarch, | |
4416 | reg->regnum)) | |
4417 | warning (_("Remote reply is too short: %s"), buf); | |
74531fed PA |
4418 | |
4419 | VEC_safe_push (cached_reg_t, event->regcache, &cached_reg); | |
43ff13b4 | 4420 | } |
c8e38a49 PA |
4421 | |
4422 | if (*p != ';') | |
4423 | error (_("Remote register badly formatted: %s\nhere: %s"), | |
4424 | buf, p); | |
4425 | ++p; | |
43ff13b4 | 4426 | } |
c8e38a49 PA |
4427 | } |
4428 | /* fall through */ | |
4429 | case 'S': /* Old style status, just signal only. */ | |
74531fed PA |
4430 | if (event->solibs_changed) |
4431 | event->ws.kind = TARGET_WAITKIND_LOADED; | |
4432 | else if (event->replay_event) | |
4433 | event->ws.kind = TARGET_WAITKIND_NO_HISTORY; | |
c8e38a49 PA |
4434 | else |
4435 | { | |
74531fed PA |
4436 | event->ws.kind = TARGET_WAITKIND_STOPPED; |
4437 | event->ws.value.sig = (enum target_signal) | |
c8e38a49 PA |
4438 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); |
4439 | } | |
4440 | break; | |
4441 | case 'W': /* Target exited. */ | |
4442 | case 'X': | |
4443 | { | |
4444 | char *p; | |
4445 | int pid; | |
4446 | ULONGEST value; | |
82f73884 | 4447 | |
c8e38a49 PA |
4448 | /* GDB used to accept only 2 hex chars here. Stubs should |
4449 | only send more if they detect GDB supports multi-process | |
4450 | support. */ | |
4451 | p = unpack_varlen_hex (&buf[1], &value); | |
82f73884 | 4452 | |
c8e38a49 PA |
4453 | if (buf[0] == 'W') |
4454 | { | |
4455 | /* The remote process exited. */ | |
74531fed PA |
4456 | event->ws.kind = TARGET_WAITKIND_EXITED; |
4457 | event->ws.value.integer = value; | |
c8e38a49 PA |
4458 | } |
4459 | else | |
4460 | { | |
4461 | /* The remote process exited with a signal. */ | |
74531fed PA |
4462 | event->ws.kind = TARGET_WAITKIND_SIGNALLED; |
4463 | event->ws.value.sig = (enum target_signal) value; | |
c8e38a49 | 4464 | } |
82f73884 | 4465 | |
c8e38a49 PA |
4466 | /* If no process is specified, assume inferior_ptid. */ |
4467 | pid = ptid_get_pid (inferior_ptid); | |
4468 | if (*p == '\0') | |
4469 | ; | |
4470 | else if (*p == ';') | |
4471 | { | |
4472 | p++; | |
4473 | ||
4474 | if (p == '\0') | |
82f73884 | 4475 | ; |
c8e38a49 PA |
4476 | else if (strncmp (p, |
4477 | "process:", sizeof ("process:") - 1) == 0) | |
82f73884 | 4478 | { |
c8e38a49 PA |
4479 | ULONGEST upid; |
4480 | p += sizeof ("process:") - 1; | |
4481 | unpack_varlen_hex (p, &upid); | |
4482 | pid = upid; | |
82f73884 PA |
4483 | } |
4484 | else | |
4485 | error (_("unknown stop reply packet: %s"), buf); | |
43ff13b4 | 4486 | } |
c8e38a49 PA |
4487 | else |
4488 | error (_("unknown stop reply packet: %s"), buf); | |
74531fed PA |
4489 | event->ptid = pid_to_ptid (pid); |
4490 | } | |
4491 | break; | |
4492 | } | |
4493 | ||
4494 | if (non_stop && ptid_equal (event->ptid, null_ptid)) | |
4495 | error (_("No process or thread specified in stop reply: %s"), buf); | |
4496 | } | |
4497 | ||
4498 | /* When the stub wants to tell GDB about a new stop reply, it sends a | |
4499 | stop notification (%Stop). Those can come it at any time, hence, | |
4500 | we have to make sure that any pending putpkt/getpkt sequence we're | |
4501 | making is finished, before querying the stub for more events with | |
4502 | vStopped. E.g., if we started a vStopped sequence immediatelly | |
4503 | upon receiving the %Stop notification, something like this could | |
4504 | happen: | |
4505 | ||
4506 | 1.1) --> Hg 1 | |
4507 | 1.2) <-- OK | |
4508 | 1.3) --> g | |
4509 | 1.4) <-- %Stop | |
4510 | 1.5) --> vStopped | |
4511 | 1.6) <-- (registers reply to step #1.3) | |
4512 | ||
4513 | Obviously, the reply in step #1.6 would be unexpected to a vStopped | |
4514 | query. | |
4515 | ||
4516 | To solve this, whenever we parse a %Stop notification sucessfully, | |
4517 | we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on | |
4518 | doing whatever we were doing: | |
4519 | ||
4520 | 2.1) --> Hg 1 | |
4521 | 2.2) <-- OK | |
4522 | 2.3) --> g | |
4523 | 2.4) <-- %Stop | |
4524 | <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN> | |
4525 | 2.5) <-- (registers reply to step #2.3) | |
4526 | ||
4527 | Eventualy after step #2.5, we return to the event loop, which | |
4528 | notices there's an event on the | |
4529 | REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the | |
4530 | associated callback --- the function below. At this point, we're | |
4531 | always safe to start a vStopped sequence. : | |
4532 | ||
4533 | 2.6) --> vStopped | |
4534 | 2.7) <-- T05 thread:2 | |
4535 | 2.8) --> vStopped | |
4536 | 2.9) --> OK | |
4537 | */ | |
4538 | ||
4539 | static void | |
4540 | remote_get_pending_stop_replies (void) | |
4541 | { | |
4542 | struct remote_state *rs = get_remote_state (); | |
4543 | int ret; | |
4544 | ||
4545 | if (pending_stop_reply) | |
4546 | { | |
4547 | /* acknowledge */ | |
4548 | putpkt ("vStopped"); | |
4549 | ||
4550 | /* Now we can rely on it. */ | |
4551 | push_stop_reply (pending_stop_reply); | |
4552 | pending_stop_reply = NULL; | |
4553 | ||
4554 | while (1) | |
4555 | { | |
4556 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4557 | if (strcmp (rs->buf, "OK") == 0) | |
4558 | break; | |
4559 | else | |
4560 | { | |
4561 | struct cleanup *old_chain; | |
4562 | struct stop_reply *stop_reply = stop_reply_xmalloc (); | |
4563 | ||
4564 | old_chain = make_cleanup (do_stop_reply_xfree, stop_reply); | |
4565 | remote_parse_stop_reply (rs->buf, stop_reply); | |
4566 | ||
4567 | /* acknowledge */ | |
4568 | putpkt ("vStopped"); | |
4569 | ||
4570 | if (stop_reply->ws.kind != TARGET_WAITKIND_IGNORE) | |
4571 | { | |
4572 | /* Now we can rely on it. */ | |
4573 | discard_cleanups (old_chain); | |
4574 | push_stop_reply (stop_reply); | |
4575 | } | |
4576 | else | |
4577 | /* We got an unknown stop reply. */ | |
4578 | do_cleanups (old_chain); | |
4579 | } | |
4580 | } | |
4581 | } | |
4582 | } | |
4583 | ||
4584 | ||
4585 | /* Called when it is decided that STOP_REPLY holds the info of the | |
4586 | event that is to be returned to the core. This function always | |
4587 | destroys STOP_REPLY. */ | |
4588 | ||
4589 | static ptid_t | |
4590 | process_stop_reply (struct stop_reply *stop_reply, | |
4591 | struct target_waitstatus *status) | |
4592 | { | |
4593 | ptid_t ptid; | |
4594 | ||
4595 | *status = stop_reply->ws; | |
4596 | ptid = stop_reply->ptid; | |
4597 | ||
4598 | /* If no thread/process was reported by the stub, assume the current | |
4599 | inferior. */ | |
4600 | if (ptid_equal (ptid, null_ptid)) | |
4601 | ptid = inferior_ptid; | |
4602 | ||
5f3563ea PA |
4603 | if (status->kind != TARGET_WAITKIND_EXITED |
4604 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
74531fed | 4605 | { |
5f3563ea PA |
4606 | /* Expedited registers. */ |
4607 | if (stop_reply->regcache) | |
4608 | { | |
217f1f79 UW |
4609 | struct regcache *regcache |
4610 | = get_thread_arch_regcache (ptid, target_gdbarch); | |
5f3563ea PA |
4611 | cached_reg_t *reg; |
4612 | int ix; | |
4613 | ||
4614 | for (ix = 0; | |
4615 | VEC_iterate(cached_reg_t, stop_reply->regcache, ix, reg); | |
4616 | ix++) | |
217f1f79 | 4617 | regcache_raw_supply (regcache, reg->num, reg->data); |
5f3563ea PA |
4618 | VEC_free (cached_reg_t, stop_reply->regcache); |
4619 | } | |
74531fed | 4620 | |
5f3563ea PA |
4621 | remote_stopped_by_watchpoint_p = stop_reply->stopped_by_watchpoint_p; |
4622 | remote_watch_data_address = stop_reply->watch_data_address; | |
1941c569 PA |
4623 | |
4624 | remote_notice_new_inferior (ptid, 0); | |
74531fed PA |
4625 | } |
4626 | ||
74531fed PA |
4627 | stop_reply_xfree (stop_reply); |
4628 | return ptid; | |
4629 | } | |
4630 | ||
4631 | /* The non-stop mode version of target_wait. */ | |
4632 | ||
4633 | static ptid_t | |
47608cb1 | 4634 | remote_wait_ns (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
4635 | { |
4636 | struct remote_state *rs = get_remote_state (); | |
4637 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
4638 | ptid_t event_ptid = null_ptid; | |
4639 | struct stop_reply *stop_reply; | |
4640 | int ret; | |
4641 | ||
4642 | /* If in non-stop mode, get out of getpkt even if a | |
4643 | notification is received. */ | |
4644 | ||
4645 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, | |
4646 | 0 /* forever */); | |
4647 | while (1) | |
4648 | { | |
4649 | if (ret != -1) | |
4650 | switch (rs->buf[0]) | |
4651 | { | |
4652 | case 'E': /* Error of some sort. */ | |
4653 | /* We're out of sync with the target now. Did it continue | |
4654 | or not? We can't tell which thread it was in non-stop, | |
4655 | so just ignore this. */ | |
4656 | warning (_("Remote failure reply: %s"), rs->buf); | |
4657 | break; | |
4658 | case 'O': /* Console output. */ | |
4659 | remote_console_output (rs->buf + 1); | |
4660 | break; | |
4661 | default: | |
4662 | warning (_("Invalid remote reply: %s"), rs->buf); | |
4663 | break; | |
4664 | } | |
4665 | ||
4666 | /* Acknowledge a pending stop reply that may have arrived in the | |
4667 | mean time. */ | |
4668 | if (pending_stop_reply != NULL) | |
4669 | remote_get_pending_stop_replies (); | |
4670 | ||
4671 | /* If indeed we noticed a stop reply, we're done. */ | |
4672 | stop_reply = queued_stop_reply (ptid); | |
4673 | if (stop_reply != NULL) | |
4674 | return process_stop_reply (stop_reply, status); | |
4675 | ||
47608cb1 | 4676 | /* Still no event. If we're just polling for an event, then |
74531fed | 4677 | return to the event loop. */ |
47608cb1 | 4678 | if (options & TARGET_WNOHANG) |
74531fed PA |
4679 | { |
4680 | status->kind = TARGET_WAITKIND_IGNORE; | |
4681 | return minus_one_ptid; | |
4682 | } | |
4683 | ||
47608cb1 | 4684 | /* Otherwise do a blocking wait. */ |
74531fed PA |
4685 | ret = getpkt_or_notif_sane (&rs->buf, &rs->buf_size, |
4686 | 1 /* forever */); | |
4687 | } | |
4688 | } | |
4689 | ||
4690 | /* Wait until the remote machine stops, then return, storing status in | |
4691 | STATUS just as `wait' would. */ | |
4692 | ||
4693 | static ptid_t | |
47608cb1 | 4694 | remote_wait_as (ptid_t ptid, struct target_waitstatus *status, int options) |
74531fed PA |
4695 | { |
4696 | struct remote_state *rs = get_remote_state (); | |
4697 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
4698 | ptid_t event_ptid = null_ptid; | |
4699 | ULONGEST addr; | |
4700 | int solibs_changed = 0; | |
4701 | char *buf, *p; | |
4702 | struct stop_reply *stop_reply; | |
4703 | ||
47608cb1 PA |
4704 | again: |
4705 | ||
74531fed PA |
4706 | status->kind = TARGET_WAITKIND_IGNORE; |
4707 | status->value.integer = 0; | |
4708 | ||
4709 | stop_reply = queued_stop_reply (ptid); | |
4710 | if (stop_reply != NULL) | |
4711 | return process_stop_reply (stop_reply, status); | |
4712 | ||
4713 | if (rs->cached_wait_status) | |
4714 | /* Use the cached wait status, but only once. */ | |
4715 | rs->cached_wait_status = 0; | |
4716 | else | |
4717 | { | |
4718 | int ret; | |
4719 | ||
4720 | if (!target_is_async_p ()) | |
4721 | { | |
4722 | ofunc = signal (SIGINT, remote_interrupt); | |
4723 | /* If the user hit C-c before this packet, or between packets, | |
4724 | pretend that it was hit right here. */ | |
4725 | if (quit_flag) | |
4726 | { | |
4727 | quit_flag = 0; | |
4728 | remote_interrupt (SIGINT); | |
4729 | } | |
4730 | } | |
4731 | ||
4732 | /* FIXME: cagney/1999-09-27: If we're in async mode we should | |
4733 | _never_ wait for ever -> test on target_is_async_p(). | |
4734 | However, before we do that we need to ensure that the caller | |
4735 | knows how to take the target into/out of async mode. */ | |
4736 | ret = getpkt_sane (&rs->buf, &rs->buf_size, wait_forever_enabled_p); | |
4737 | if (!target_is_async_p ()) | |
4738 | signal (SIGINT, ofunc); | |
4739 | } | |
4740 | ||
4741 | buf = rs->buf; | |
4742 | ||
4743 | remote_stopped_by_watchpoint_p = 0; | |
4744 | ||
4745 | /* We got something. */ | |
4746 | rs->waiting_for_stop_reply = 0; | |
4747 | ||
4748 | switch (buf[0]) | |
4749 | { | |
4750 | case 'E': /* Error of some sort. */ | |
4751 | /* We're out of sync with the target now. Did it continue or | |
4752 | not? Not is more likely, so report a stop. */ | |
4753 | warning (_("Remote failure reply: %s"), buf); | |
4754 | status->kind = TARGET_WAITKIND_STOPPED; | |
4755 | status->value.sig = TARGET_SIGNAL_0; | |
4756 | break; | |
4757 | case 'F': /* File-I/O request. */ | |
4758 | remote_fileio_request (buf); | |
4759 | break; | |
4760 | case 'T': case 'S': case 'X': case 'W': | |
4761 | { | |
4762 | struct stop_reply *stop_reply; | |
4763 | struct cleanup *old_chain; | |
4764 | ||
4765 | stop_reply = stop_reply_xmalloc (); | |
4766 | old_chain = make_cleanup (do_stop_reply_xfree, stop_reply); | |
4767 | remote_parse_stop_reply (buf, stop_reply); | |
4768 | discard_cleanups (old_chain); | |
4769 | event_ptid = process_stop_reply (stop_reply, status); | |
c8e38a49 PA |
4770 | break; |
4771 | } | |
4772 | case 'O': /* Console output. */ | |
4773 | remote_console_output (buf + 1); | |
e24a49d8 | 4774 | |
c8e38a49 PA |
4775 | /* The target didn't really stop; keep waiting. */ |
4776 | rs->waiting_for_stop_reply = 1; | |
e24a49d8 | 4777 | |
c8e38a49 PA |
4778 | break; |
4779 | case '\0': | |
4780 | if (last_sent_signal != TARGET_SIGNAL_0) | |
4781 | { | |
4782 | /* Zero length reply means that we tried 'S' or 'C' and the | |
4783 | remote system doesn't support it. */ | |
4784 | target_terminal_ours_for_output (); | |
4785 | printf_filtered | |
4786 | ("Can't send signals to this remote system. %s not sent.\n", | |
4787 | target_signal_to_name (last_sent_signal)); | |
4788 | last_sent_signal = TARGET_SIGNAL_0; | |
4789 | target_terminal_inferior (); | |
4790 | ||
4791 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
4792 | putpkt ((char *) buf); | |
4793 | ||
4794 | /* We just told the target to resume, so a stop reply is in | |
4795 | order. */ | |
e24a49d8 | 4796 | rs->waiting_for_stop_reply = 1; |
c8e38a49 | 4797 | break; |
43ff13b4 | 4798 | } |
c8e38a49 PA |
4799 | /* else fallthrough */ |
4800 | default: | |
4801 | warning (_("Invalid remote reply: %s"), buf); | |
4802 | /* Keep waiting. */ | |
4803 | rs->waiting_for_stop_reply = 1; | |
4804 | break; | |
43ff13b4 | 4805 | } |
c8e38a49 | 4806 | |
c8e38a49 | 4807 | if (status->kind == TARGET_WAITKIND_IGNORE) |
47608cb1 PA |
4808 | { |
4809 | /* Nothing interesting happened. If we're doing a non-blocking | |
4810 | poll, we're done. Otherwise, go back to waiting. */ | |
4811 | if (options & TARGET_WNOHANG) | |
4812 | return minus_one_ptid; | |
4813 | else | |
4814 | goto again; | |
4815 | } | |
74531fed PA |
4816 | else if (status->kind != TARGET_WAITKIND_EXITED |
4817 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
82f73884 PA |
4818 | { |
4819 | if (!ptid_equal (event_ptid, null_ptid)) | |
4820 | record_currthread (event_ptid); | |
4821 | else | |
4822 | event_ptid = inferior_ptid; | |
43ff13b4 | 4823 | } |
74531fed PA |
4824 | else |
4825 | /* A process exit. Invalidate our notion of current thread. */ | |
4826 | record_currthread (minus_one_ptid); | |
79d7f229 | 4827 | |
82f73884 | 4828 | return event_ptid; |
43ff13b4 JM |
4829 | } |
4830 | ||
74531fed PA |
4831 | /* Wait until the remote machine stops, then return, storing status in |
4832 | STATUS just as `wait' would. */ | |
4833 | ||
c8e38a49 | 4834 | static ptid_t |
117de6a9 | 4835 | remote_wait (struct target_ops *ops, |
47608cb1 | 4836 | ptid_t ptid, struct target_waitstatus *status, int options) |
c8e38a49 PA |
4837 | { |
4838 | ptid_t event_ptid; | |
4839 | ||
74531fed | 4840 | if (non_stop) |
47608cb1 | 4841 | event_ptid = remote_wait_ns (ptid, status, options); |
74531fed | 4842 | else |
47608cb1 | 4843 | event_ptid = remote_wait_as (ptid, status, options); |
c8e38a49 | 4844 | |
74531fed | 4845 | if (target_can_async_p ()) |
c8e38a49 | 4846 | { |
74531fed PA |
4847 | /* If there are are events left in the queue tell the event loop |
4848 | to return here. */ | |
4849 | if (stop_reply_queue) | |
4850 | mark_async_event_handler (remote_async_inferior_event_token); | |
c8e38a49 | 4851 | } |
c8e38a49 PA |
4852 | |
4853 | return event_ptid; | |
4854 | } | |
4855 | ||
74ca34ce | 4856 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 4857 | |
b96ec7ac | 4858 | static int |
56be3814 | 4859 | fetch_register_using_p (struct regcache *regcache, struct packet_reg *reg) |
b96ec7ac AC |
4860 | { |
4861 | struct remote_state *rs = get_remote_state (); | |
2e9f7625 | 4862 | char *buf, *p; |
b96ec7ac AC |
4863 | char regp[MAX_REGISTER_SIZE]; |
4864 | int i; | |
4865 | ||
74ca34ce DJ |
4866 | if (remote_protocol_packets[PACKET_p].support == PACKET_DISABLE) |
4867 | return 0; | |
4868 | ||
4869 | if (reg->pnum == -1) | |
4870 | return 0; | |
4871 | ||
2e9f7625 | 4872 | p = rs->buf; |
fcad0fa4 | 4873 | *p++ = 'p'; |
74ca34ce | 4874 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 4875 | *p++ = '\0'; |
6d820c5c | 4876 | remote_send (&rs->buf, &rs->buf_size); |
3f9a994c | 4877 | |
2e9f7625 DJ |
4878 | buf = rs->buf; |
4879 | ||
74ca34ce DJ |
4880 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_p])) |
4881 | { | |
4882 | case PACKET_OK: | |
4883 | break; | |
4884 | case PACKET_UNKNOWN: | |
4885 | return 0; | |
4886 | case PACKET_ERROR: | |
4887 | error (_("Could not fetch register \"%s\""), | |
4a22f64d | 4888 | gdbarch_register_name (get_regcache_arch (regcache), reg->regnum)); |
74ca34ce | 4889 | } |
3f9a994c JB |
4890 | |
4891 | /* If this register is unfetchable, tell the regcache. */ | |
4892 | if (buf[0] == 'x') | |
8480adf2 | 4893 | { |
56be3814 | 4894 | regcache_raw_supply (regcache, reg->regnum, NULL); |
8480adf2 | 4895 | return 1; |
b96ec7ac | 4896 | } |
b96ec7ac | 4897 | |
3f9a994c JB |
4898 | /* Otherwise, parse and supply the value. */ |
4899 | p = buf; | |
4900 | i = 0; | |
4901 | while (p[0] != 0) | |
4902 | { | |
4903 | if (p[1] == 0) | |
74ca34ce | 4904 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
4905 | |
4906 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
4907 | p += 2; | |
4908 | } | |
56be3814 | 4909 | regcache_raw_supply (regcache, reg->regnum, regp); |
3f9a994c | 4910 | return 1; |
b96ec7ac AC |
4911 | } |
4912 | ||
74ca34ce DJ |
4913 | /* Fetch the registers included in the target's 'g' packet. */ |
4914 | ||
29709017 DJ |
4915 | static int |
4916 | send_g_packet (void) | |
c906108c | 4917 | { |
d01949b6 | 4918 | struct remote_state *rs = get_remote_state (); |
74ca34ce | 4919 | int i, buf_len; |
c906108c | 4920 | char *p; |
74ca34ce | 4921 | char *regs; |
c906108c | 4922 | |
74ca34ce DJ |
4923 | sprintf (rs->buf, "g"); |
4924 | remote_send (&rs->buf, &rs->buf_size); | |
c906108c | 4925 | |
29709017 DJ |
4926 | /* We can get out of synch in various cases. If the first character |
4927 | in the buffer is not a hex character, assume that has happened | |
4928 | and try to fetch another packet to read. */ | |
4929 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
4930 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
4931 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
4932 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
4933 | { | |
4934 | if (remote_debug) | |
4935 | fprintf_unfiltered (gdb_stdlog, | |
4936 | "Bad register packet; fetching a new packet\n"); | |
4937 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4938 | } | |
4939 | ||
74ca34ce DJ |
4940 | buf_len = strlen (rs->buf); |
4941 | ||
4942 | /* Sanity check the received packet. */ | |
4943 | if (buf_len % 2 != 0) | |
4944 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf); | |
29709017 DJ |
4945 | |
4946 | return buf_len / 2; | |
4947 | } | |
4948 | ||
4949 | static void | |
56be3814 | 4950 | process_g_packet (struct regcache *regcache) |
29709017 | 4951 | { |
4a22f64d | 4952 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
29709017 DJ |
4953 | struct remote_state *rs = get_remote_state (); |
4954 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
4955 | int i, buf_len; | |
4956 | char *p; | |
4957 | char *regs; | |
4958 | ||
4959 | buf_len = strlen (rs->buf); | |
4960 | ||
4961 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce DJ |
4962 | if (buf_len > 2 * rsa->sizeof_g_packet) |
4963 | error (_("Remote 'g' packet reply is too long: %s"), rs->buf); | |
4964 | ||
4965 | /* Save the size of the packet sent to us by the target. It is used | |
4966 | as a heuristic when determining the max size of packets that the | |
4967 | target can safely receive. */ | |
4968 | if (rsa->actual_register_packet_size == 0) | |
4969 | rsa->actual_register_packet_size = buf_len; | |
4970 | ||
4971 | /* If this is smaller than we guessed the 'g' packet would be, | |
4972 | update our records. A 'g' reply that doesn't include a register's | |
4973 | value implies either that the register is not available, or that | |
4974 | the 'p' packet must be used. */ | |
4975 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 4976 | { |
74ca34ce DJ |
4977 | rsa->sizeof_g_packet = buf_len / 2; |
4978 | ||
4a22f64d | 4979 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 4980 | { |
74ca34ce DJ |
4981 | if (rsa->regs[i].pnum == -1) |
4982 | continue; | |
4983 | ||
4984 | if (rsa->regs[i].offset >= rsa->sizeof_g_packet) | |
4985 | rsa->regs[i].in_g_packet = 0; | |
b96ec7ac | 4986 | else |
74ca34ce | 4987 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 4988 | } |
74ca34ce | 4989 | } |
b323314b | 4990 | |
74ca34ce | 4991 | regs = alloca (rsa->sizeof_g_packet); |
c906108c SS |
4992 | |
4993 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 4994 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 4995 | |
c906108c SS |
4996 | /* Reply describes registers byte by byte, each byte encoded as two |
4997 | hex characters. Suck them all up, then supply them to the | |
4998 | register cacheing/storage mechanism. */ | |
4999 | ||
74ca34ce | 5000 | p = rs->buf; |
ea9c271d | 5001 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 5002 | { |
74ca34ce DJ |
5003 | if (p[0] == 0 || p[1] == 0) |
5004 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
5005 | internal_error (__FILE__, __LINE__, | |
5006 | "unexpected end of 'g' packet reply"); | |
5007 | ||
c906108c | 5008 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 5009 | regs[i] = 0; /* 'x' */ |
c906108c SS |
5010 | else |
5011 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
5012 | p += 2; | |
5013 | } | |
5014 | ||
ad10f812 | 5015 | { |
b323314b | 5016 | int i; |
4a22f64d | 5017 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
ad10f812 | 5018 | { |
ea9c271d | 5019 | struct packet_reg *r = &rsa->regs[i]; |
b323314b AC |
5020 | if (r->in_g_packet) |
5021 | { | |
74ca34ce DJ |
5022 | if (r->offset * 2 >= strlen (rs->buf)) |
5023 | /* This shouldn't happen - we adjusted in_g_packet above. */ | |
5024 | internal_error (__FILE__, __LINE__, | |
5025 | "unexpected end of 'g' packet reply"); | |
5026 | else if (rs->buf[r->offset * 2] == 'x') | |
8ccc1287 | 5027 | { |
74ca34ce | 5028 | gdb_assert (r->offset * 2 < strlen (rs->buf)); |
8ccc1287 AC |
5029 | /* The register isn't available, mark it as such (at |
5030 | the same time setting the value to zero). */ | |
56be3814 | 5031 | regcache_raw_supply (regcache, r->regnum, NULL); |
8ccc1287 AC |
5032 | } |
5033 | else | |
56be3814 | 5034 | regcache_raw_supply (regcache, r->regnum, |
8ccc1287 | 5035 | regs + r->offset); |
b323314b | 5036 | } |
ad10f812 AC |
5037 | } |
5038 | } | |
c906108c SS |
5039 | } |
5040 | ||
29709017 | 5041 | static void |
56be3814 | 5042 | fetch_registers_using_g (struct regcache *regcache) |
29709017 DJ |
5043 | { |
5044 | send_g_packet (); | |
56be3814 | 5045 | process_g_packet (regcache); |
29709017 DJ |
5046 | } |
5047 | ||
74ca34ce | 5048 | static void |
28439f5e PA |
5049 | remote_fetch_registers (struct target_ops *ops, |
5050 | struct regcache *regcache, int regnum) | |
74ca34ce DJ |
5051 | { |
5052 | struct remote_state *rs = get_remote_state (); | |
5053 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
5054 | int i; | |
5055 | ||
79d7f229 | 5056 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
5057 | |
5058 | if (regnum >= 0) | |
5059 | { | |
5060 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
5061 | gdb_assert (reg != NULL); | |
5062 | ||
5063 | /* If this register might be in the 'g' packet, try that first - | |
5064 | we are likely to read more than one register. If this is the | |
5065 | first 'g' packet, we might be overly optimistic about its | |
5066 | contents, so fall back to 'p'. */ | |
5067 | if (reg->in_g_packet) | |
5068 | { | |
56be3814 | 5069 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
5070 | if (reg->in_g_packet) |
5071 | return; | |
5072 | } | |
5073 | ||
56be3814 | 5074 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
5075 | return; |
5076 | ||
5077 | /* This register is not available. */ | |
56be3814 | 5078 | regcache_raw_supply (regcache, reg->regnum, NULL); |
74ca34ce DJ |
5079 | |
5080 | return; | |
5081 | } | |
5082 | ||
56be3814 | 5083 | fetch_registers_using_g (regcache); |
74ca34ce | 5084 | |
4a22f64d | 5085 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 5086 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 5087 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
5088 | { |
5089 | /* This register is not available. */ | |
56be3814 | 5090 | regcache_raw_supply (regcache, i, NULL); |
74ca34ce DJ |
5091 | } |
5092 | } | |
5093 | ||
c906108c SS |
5094 | /* Prepare to store registers. Since we may send them all (using a |
5095 | 'G' request), we have to read out the ones we don't want to change | |
5096 | first. */ | |
5097 | ||
c5aa993b | 5098 | static void |
316f2060 | 5099 | remote_prepare_to_store (struct regcache *regcache) |
c906108c | 5100 | { |
ea9c271d | 5101 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cf0e1e0d | 5102 | int i; |
cfd77fa1 | 5103 | gdb_byte buf[MAX_REGISTER_SIZE]; |
cf0e1e0d | 5104 | |
c906108c | 5105 | /* Make sure the entire registers array is valid. */ |
444abaca | 5106 | switch (remote_protocol_packets[PACKET_P].support) |
5a2468f5 JM |
5107 | { |
5108 | case PACKET_DISABLE: | |
5109 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 5110 | /* Make sure all the necessary registers are cached. */ |
4a22f64d | 5111 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
ea9c271d | 5112 | if (rsa->regs[i].in_g_packet) |
316f2060 | 5113 | regcache_raw_read (regcache, rsa->regs[i].regnum, buf); |
5a2468f5 JM |
5114 | break; |
5115 | case PACKET_ENABLE: | |
5116 | break; | |
5117 | } | |
5118 | } | |
5119 | ||
ad10f812 | 5120 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 5121 | packet was not recognized. */ |
5a2468f5 JM |
5122 | |
5123 | static int | |
56be3814 | 5124 | store_register_using_P (const struct regcache *regcache, struct packet_reg *reg) |
5a2468f5 | 5125 | { |
4a22f64d | 5126 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
d01949b6 | 5127 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 5128 | struct remote_arch_state *rsa = get_remote_arch_state (); |
5a2468f5 | 5129 | /* Try storing a single register. */ |
6d820c5c | 5130 | char *buf = rs->buf; |
cfd77fa1 | 5131 | gdb_byte regp[MAX_REGISTER_SIZE]; |
5a2468f5 | 5132 | char *p; |
5a2468f5 | 5133 | |
74ca34ce DJ |
5134 | if (remote_protocol_packets[PACKET_P].support == PACKET_DISABLE) |
5135 | return 0; | |
5136 | ||
5137 | if (reg->pnum == -1) | |
5138 | return 0; | |
5139 | ||
ea9c271d | 5140 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 5141 | p = buf + strlen (buf); |
56be3814 | 5142 | regcache_raw_collect (regcache, reg->regnum, regp); |
4a22f64d | 5143 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
6d820c5c | 5144 | remote_send (&rs->buf, &rs->buf_size); |
5a2468f5 | 5145 | |
74ca34ce DJ |
5146 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
5147 | { | |
5148 | case PACKET_OK: | |
5149 | return 1; | |
5150 | case PACKET_ERROR: | |
5151 | error (_("Could not write register \"%s\""), | |
4a22f64d | 5152 | gdbarch_register_name (gdbarch, reg->regnum)); |
74ca34ce DJ |
5153 | case PACKET_UNKNOWN: |
5154 | return 0; | |
5155 | default: | |
5156 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
5157 | } | |
c906108c SS |
5158 | } |
5159 | ||
23860348 MS |
5160 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
5161 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
5162 | |
5163 | static void | |
56be3814 | 5164 | store_registers_using_G (const struct regcache *regcache) |
c906108c | 5165 | { |
d01949b6 | 5166 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 5167 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cfd77fa1 | 5168 | gdb_byte *regs; |
c906108c SS |
5169 | char *p; |
5170 | ||
193cb69f AC |
5171 | /* Extract all the registers in the regcache copying them into a |
5172 | local buffer. */ | |
5173 | { | |
b323314b | 5174 | int i; |
ea9c271d DJ |
5175 | regs = alloca (rsa->sizeof_g_packet); |
5176 | memset (regs, 0, rsa->sizeof_g_packet); | |
4a22f64d | 5177 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
193cb69f | 5178 | { |
ea9c271d | 5179 | struct packet_reg *r = &rsa->regs[i]; |
b323314b | 5180 | if (r->in_g_packet) |
56be3814 | 5181 | regcache_raw_collect (regcache, r->regnum, regs + r->offset); |
193cb69f AC |
5182 | } |
5183 | } | |
c906108c SS |
5184 | |
5185 | /* Command describes registers byte by byte, | |
5186 | each byte encoded as two hex characters. */ | |
6d820c5c | 5187 | p = rs->buf; |
193cb69f | 5188 | *p++ = 'G'; |
74ca34ce DJ |
5189 | /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets |
5190 | updated. */ | |
5191 | bin2hex (regs, p, rsa->sizeof_g_packet); | |
6d820c5c | 5192 | remote_send (&rs->buf, &rs->buf_size); |
c906108c | 5193 | } |
74ca34ce DJ |
5194 | |
5195 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
5196 | of the register cache buffer. FIXME: ignores errors. */ | |
5197 | ||
5198 | static void | |
28439f5e PA |
5199 | remote_store_registers (struct target_ops *ops, |
5200 | struct regcache *regcache, int regnum) | |
74ca34ce DJ |
5201 | { |
5202 | struct remote_state *rs = get_remote_state (); | |
5203 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
5204 | int i; | |
5205 | ||
79d7f229 | 5206 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
5207 | |
5208 | if (regnum >= 0) | |
5209 | { | |
5210 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
5211 | gdb_assert (reg != NULL); | |
5212 | ||
5213 | /* Always prefer to store registers using the 'P' packet if | |
5214 | possible; we often change only a small number of registers. | |
5215 | Sometimes we change a larger number; we'd need help from a | |
5216 | higher layer to know to use 'G'. */ | |
56be3814 | 5217 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
5218 | return; |
5219 | ||
5220 | /* For now, don't complain if we have no way to write the | |
5221 | register. GDB loses track of unavailable registers too | |
5222 | easily. Some day, this may be an error. We don't have | |
5223 | any way to read the register, either... */ | |
5224 | if (!reg->in_g_packet) | |
5225 | return; | |
5226 | ||
56be3814 | 5227 | store_registers_using_G (regcache); |
74ca34ce DJ |
5228 | return; |
5229 | } | |
5230 | ||
56be3814 | 5231 | store_registers_using_G (regcache); |
74ca34ce | 5232 | |
4a22f64d | 5233 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 5234 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 5235 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
5236 | /* See above for why we do not issue an error here. */ |
5237 | continue; | |
5238 | } | |
c906108c SS |
5239 | \f |
5240 | ||
5241 | /* Return the number of hex digits in num. */ | |
5242 | ||
5243 | static int | |
fba45db2 | 5244 | hexnumlen (ULONGEST num) |
c906108c SS |
5245 | { |
5246 | int i; | |
5247 | ||
5248 | for (i = 0; num != 0; i++) | |
5249 | num >>= 4; | |
5250 | ||
5251 | return max (i, 1); | |
5252 | } | |
5253 | ||
2df3850c | 5254 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
5255 | |
5256 | static int | |
fba45db2 | 5257 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 5258 | { |
c906108c | 5259 | int len = hexnumlen (num); |
2df3850c JM |
5260 | return hexnumnstr (buf, num, len); |
5261 | } | |
5262 | ||
c906108c | 5263 | |
2df3850c | 5264 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 5265 | |
2df3850c | 5266 | static int |
fba45db2 | 5267 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
5268 | { |
5269 | int i; | |
5270 | ||
5271 | buf[width] = '\0'; | |
5272 | ||
5273 | for (i = width - 1; i >= 0; i--) | |
c906108c | 5274 | { |
c5aa993b | 5275 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
5276 | num >>= 4; |
5277 | } | |
5278 | ||
2df3850c | 5279 | return width; |
c906108c SS |
5280 | } |
5281 | ||
23860348 | 5282 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
5283 | |
5284 | static CORE_ADDR | |
fba45db2 | 5285 | remote_address_masked (CORE_ADDR addr) |
c906108c | 5286 | { |
911c95a5 UW |
5287 | int address_size = remote_address_size; |
5288 | /* If "remoteaddresssize" was not set, default to target address size. */ | |
5289 | if (!address_size) | |
1cf3db46 | 5290 | address_size = gdbarch_addr_bit (target_gdbarch); |
911c95a5 UW |
5291 | |
5292 | if (address_size > 0 | |
5293 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
5294 | { |
5295 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 5296 | in a ULONGEST variable. */ |
c906108c | 5297 | ULONGEST mask = 1; |
911c95a5 | 5298 | mask = (mask << address_size) - 1; |
c906108c SS |
5299 | addr &= mask; |
5300 | } | |
5301 | return addr; | |
5302 | } | |
5303 | ||
a31ea83d DJ |
5304 | /* Convert BUFFER, binary data at least LEN bytes long, into escaped |
5305 | binary data in OUT_BUF. Set *OUT_LEN to the length of the data | |
5306 | encoded in OUT_BUF, and return the number of bytes in OUT_BUF | |
5307 | (which may be more than *OUT_LEN due to escape characters). The | |
5308 | total number of bytes in the output buffer will be at most | |
5309 | OUT_MAXLEN. */ | |
5310 | ||
5311 | static int | |
5312 | remote_escape_output (const gdb_byte *buffer, int len, | |
5313 | gdb_byte *out_buf, int *out_len, | |
5314 | int out_maxlen) | |
5315 | { | |
5316 | int input_index, output_index; | |
5317 | ||
5318 | output_index = 0; | |
5319 | for (input_index = 0; input_index < len; input_index++) | |
5320 | { | |
5321 | gdb_byte b = buffer[input_index]; | |
5322 | ||
5323 | if (b == '$' || b == '#' || b == '}') | |
5324 | { | |
5325 | /* These must be escaped. */ | |
5326 | if (output_index + 2 > out_maxlen) | |
5327 | break; | |
5328 | out_buf[output_index++] = '}'; | |
5329 | out_buf[output_index++] = b ^ 0x20; | |
5330 | } | |
5331 | else | |
5332 | { | |
5333 | if (output_index + 1 > out_maxlen) | |
5334 | break; | |
5335 | out_buf[output_index++] = b; | |
5336 | } | |
5337 | } | |
5338 | ||
5339 | *out_len = input_index; | |
5340 | return output_index; | |
5341 | } | |
5342 | ||
0876f84a DJ |
5343 | /* Convert BUFFER, escaped data LEN bytes long, into binary data |
5344 | in OUT_BUF. Return the number of bytes written to OUT_BUF. | |
5345 | Raise an error if the total number of bytes exceeds OUT_MAXLEN. | |
5346 | ||
5347 | This function reverses remote_escape_output. It allows more | |
5348 | escaped characters than that function does, in particular because | |
5349 | '*' must be escaped to avoid the run-length encoding processing | |
5350 | in reading packets. */ | |
5351 | ||
5352 | static int | |
5353 | remote_unescape_input (const gdb_byte *buffer, int len, | |
5354 | gdb_byte *out_buf, int out_maxlen) | |
5355 | { | |
5356 | int input_index, output_index; | |
5357 | int escaped; | |
5358 | ||
5359 | output_index = 0; | |
5360 | escaped = 0; | |
5361 | for (input_index = 0; input_index < len; input_index++) | |
5362 | { | |
5363 | gdb_byte b = buffer[input_index]; | |
5364 | ||
5365 | if (output_index + 1 > out_maxlen) | |
5366 | { | |
5367 | warning (_("Received too much data from remote target;" | |
5368 | " ignoring overflow.")); | |
5369 | return output_index; | |
5370 | } | |
5371 | ||
5372 | if (escaped) | |
5373 | { | |
5374 | out_buf[output_index++] = b ^ 0x20; | |
5375 | escaped = 0; | |
5376 | } | |
5377 | else if (b == '}') | |
5378 | escaped = 1; | |
5379 | else | |
5380 | out_buf[output_index++] = b; | |
5381 | } | |
5382 | ||
5383 | if (escaped) | |
5384 | error (_("Unmatched escape character in target response.")); | |
5385 | ||
5386 | return output_index; | |
5387 | } | |
5388 | ||
c906108c SS |
5389 | /* Determine whether the remote target supports binary downloading. |
5390 | This is accomplished by sending a no-op memory write of zero length | |
5391 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
5392 | the whole packet, since many stubs strip the eighth bit and |
5393 | subsequently compute a wrong checksum, which causes real havoc with | |
5394 | remote_write_bytes. | |
7a292a7a | 5395 | |
96baa820 JM |
5396 | NOTE: This can still lose if the serial line is not eight-bit |
5397 | clean. In cases like this, the user should clear "remote | |
23860348 | 5398 | X-packet". */ |
96baa820 | 5399 | |
c906108c | 5400 | static void |
fba45db2 | 5401 | check_binary_download (CORE_ADDR addr) |
c906108c | 5402 | { |
d01949b6 | 5403 | struct remote_state *rs = get_remote_state (); |
24b06219 | 5404 | |
444abaca | 5405 | switch (remote_protocol_packets[PACKET_X].support) |
c906108c | 5406 | { |
96baa820 JM |
5407 | case PACKET_DISABLE: |
5408 | break; | |
5409 | case PACKET_ENABLE: | |
5410 | break; | |
5411 | case PACKET_SUPPORT_UNKNOWN: | |
5412 | { | |
96baa820 | 5413 | char *p; |
802188a7 | 5414 | |
2e9f7625 | 5415 | p = rs->buf; |
96baa820 JM |
5416 | *p++ = 'X'; |
5417 | p += hexnumstr (p, (ULONGEST) addr); | |
5418 | *p++ = ','; | |
5419 | p += hexnumstr (p, (ULONGEST) 0); | |
5420 | *p++ = ':'; | |
5421 | *p = '\0'; | |
802188a7 | 5422 | |
2e9f7625 | 5423 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 5424 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 5425 | |
2e9f7625 | 5426 | if (rs->buf[0] == '\0') |
96baa820 JM |
5427 | { |
5428 | if (remote_debug) | |
5429 | fprintf_unfiltered (gdb_stdlog, | |
5430 | "binary downloading NOT suppported by target\n"); | |
444abaca | 5431 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
5432 | } |
5433 | else | |
5434 | { | |
5435 | if (remote_debug) | |
5436 | fprintf_unfiltered (gdb_stdlog, | |
5437 | "binary downloading suppported by target\n"); | |
444abaca | 5438 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
5439 | } |
5440 | break; | |
5441 | } | |
c906108c SS |
5442 | } |
5443 | } | |
5444 | ||
5445 | /* Write memory data directly to the remote machine. | |
5446 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 5447 | HEADER is the starting part of the packet. |
c906108c SS |
5448 | MEMADDR is the address in the remote memory space. |
5449 | MYADDR is the address of the buffer in our space. | |
5450 | LEN is the number of bytes. | |
a76d924d DJ |
5451 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
5452 | should send data as binary ('X'), or hex-encoded ('M'). | |
5453 | ||
5454 | The function creates packet of the form | |
5455 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
5456 | ||
5457 | where encoding of <DATA> is termined by PACKET_FORMAT. | |
5458 | ||
5459 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
5460 | are omitted. | |
5461 | ||
5462 | Returns the number of bytes transferred, or 0 (setting errno) for | |
23860348 | 5463 | error. Only transfer a single packet. */ |
c906108c | 5464 | |
a76d924d DJ |
5465 | static int |
5466 | remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, | |
5467 | const gdb_byte *myaddr, int len, | |
5468 | char packet_format, int use_length) | |
c906108c | 5469 | { |
6d820c5c | 5470 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 5471 | char *p; |
a76d924d DJ |
5472 | char *plen = NULL; |
5473 | int plenlen = 0; | |
917317f4 JM |
5474 | int todo; |
5475 | int nr_bytes; | |
a257b5bb | 5476 | int payload_size; |
6765f3e5 | 5477 | int payload_length; |
a76d924d DJ |
5478 | int header_length; |
5479 | ||
5480 | if (packet_format != 'X' && packet_format != 'M') | |
5481 | internal_error (__FILE__, __LINE__, | |
5482 | "remote_write_bytes_aux: bad packet format"); | |
c906108c | 5483 | |
b2182ed2 DJ |
5484 | if (len <= 0) |
5485 | return 0; | |
5486 | ||
3de11b2e | 5487 | payload_size = get_memory_write_packet_size (); |
2bc416ba | 5488 | |
6d820c5c DJ |
5489 | /* The packet buffer will be large enough for the payload; |
5490 | get_memory_packet_size ensures this. */ | |
a76d924d | 5491 | rs->buf[0] = '\0'; |
c906108c | 5492 | |
a257b5bb | 5493 | /* Compute the size of the actual payload by subtracting out the |
3de11b2e NS |
5494 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". |
5495 | */ | |
a76d924d DJ |
5496 | payload_size -= strlen ("$,:#NN"); |
5497 | if (!use_length) | |
5498 | /* The comma won't be used. */ | |
5499 | payload_size += 1; | |
5500 | header_length = strlen (header); | |
5501 | payload_size -= header_length; | |
3de11b2e | 5502 | payload_size -= hexnumlen (memaddr); |
c906108c | 5503 | |
a76d924d | 5504 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 5505 | |
a76d924d DJ |
5506 | strcat (rs->buf, header); |
5507 | p = rs->buf + strlen (header); | |
5508 | ||
5509 | /* Compute a best guess of the number of bytes actually transfered. */ | |
5510 | if (packet_format == 'X') | |
c906108c | 5511 | { |
23860348 | 5512 | /* Best guess at number of bytes that will fit. */ |
a257b5bb | 5513 | todo = min (len, payload_size); |
a76d924d DJ |
5514 | if (use_length) |
5515 | payload_size -= hexnumlen (todo); | |
3de11b2e | 5516 | todo = min (todo, payload_size); |
a76d924d DJ |
5517 | } |
5518 | else | |
5519 | { | |
23860348 | 5520 | /* Num bytes that will fit. */ |
a257b5bb | 5521 | todo = min (len, payload_size / 2); |
a76d924d DJ |
5522 | if (use_length) |
5523 | payload_size -= hexnumlen (todo); | |
3de11b2e | 5524 | todo = min (todo, payload_size / 2); |
917317f4 | 5525 | } |
a76d924d | 5526 | |
3de11b2e NS |
5527 | if (todo <= 0) |
5528 | internal_error (__FILE__, __LINE__, | |
5529 | _("minumum packet size too small to write data")); | |
802188a7 | 5530 | |
6765f3e5 DJ |
5531 | /* If we already need another packet, then try to align the end |
5532 | of this packet to a useful boundary. */ | |
5533 | if (todo > 2 * REMOTE_ALIGN_WRITES && todo < len) | |
5534 | todo = ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
5535 | ||
a257b5bb | 5536 | /* Append "<memaddr>". */ |
917317f4 JM |
5537 | memaddr = remote_address_masked (memaddr); |
5538 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 5539 | |
a76d924d DJ |
5540 | if (use_length) |
5541 | { | |
5542 | /* Append ",". */ | |
5543 | *p++ = ','; | |
802188a7 | 5544 | |
a76d924d DJ |
5545 | /* Append <len>. Retain the location/size of <len>. It may need to |
5546 | be adjusted once the packet body has been created. */ | |
5547 | plen = p; | |
5548 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
5549 | p += plenlen; | |
5550 | } | |
a257b5bb AC |
5551 | |
5552 | /* Append ":". */ | |
917317f4 JM |
5553 | *p++ = ':'; |
5554 | *p = '\0'; | |
802188a7 | 5555 | |
a257b5bb | 5556 | /* Append the packet body. */ |
a76d924d | 5557 | if (packet_format == 'X') |
917317f4 | 5558 | { |
917317f4 JM |
5559 | /* Binary mode. Send target system values byte by byte, in |
5560 | increasing byte addresses. Only escape certain critical | |
5561 | characters. */ | |
6765f3e5 DJ |
5562 | payload_length = remote_escape_output (myaddr, todo, p, &nr_bytes, |
5563 | payload_size); | |
5564 | ||
5565 | /* If not all TODO bytes fit, then we'll need another packet. Make | |
9b7194bc DJ |
5566 | a second try to keep the end of the packet aligned. Don't do |
5567 | this if the packet is tiny. */ | |
5568 | if (nr_bytes < todo && nr_bytes > 2 * REMOTE_ALIGN_WRITES) | |
6765f3e5 DJ |
5569 | { |
5570 | int new_nr_bytes; | |
5571 | ||
5572 | new_nr_bytes = (((memaddr + nr_bytes) & ~(REMOTE_ALIGN_WRITES - 1)) | |
5573 | - memaddr); | |
5574 | if (new_nr_bytes != nr_bytes) | |
5575 | payload_length = remote_escape_output (myaddr, new_nr_bytes, | |
5576 | p, &nr_bytes, | |
5577 | payload_size); | |
5578 | } | |
5579 | ||
5580 | p += payload_length; | |
a76d924d | 5581 | if (use_length && nr_bytes < todo) |
c906108c | 5582 | { |
802188a7 | 5583 | /* Escape chars have filled up the buffer prematurely, |
917317f4 JM |
5584 | and we have actually sent fewer bytes than planned. |
5585 | Fix-up the length field of the packet. Use the same | |
5586 | number of characters as before. */ | |
917317f4 JM |
5587 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); |
5588 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 5589 | } |
a76d924d DJ |
5590 | } |
5591 | else | |
5592 | { | |
917317f4 JM |
5593 | /* Normal mode: Send target system values byte by byte, in |
5594 | increasing byte addresses. Each byte is encoded as a two hex | |
5595 | value. */ | |
2644f393 | 5596 | nr_bytes = bin2hex (myaddr, p, todo); |
aa6c0017 | 5597 | p += 2 * nr_bytes; |
c906108c | 5598 | } |
802188a7 | 5599 | |
2e9f7625 | 5600 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 5601 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 5602 | |
2e9f7625 | 5603 | if (rs->buf[0] == 'E') |
917317f4 JM |
5604 | { |
5605 | /* There is no correspondance between what the remote protocol | |
5606 | uses for errors and errno codes. We would like a cleaner way | |
5607 | of representing errors (big enough to include errno codes, | |
5608 | bfd_error codes, and others). But for now just return EIO. */ | |
5609 | errno = EIO; | |
5610 | return 0; | |
5611 | } | |
802188a7 | 5612 | |
23860348 MS |
5613 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send |
5614 | fewer bytes than we'd planned. */ | |
917317f4 | 5615 | return nr_bytes; |
c906108c SS |
5616 | } |
5617 | ||
a76d924d DJ |
5618 | /* Write memory data directly to the remote machine. |
5619 | This does not inform the data cache; the data cache uses this. | |
5620 | MEMADDR is the address in the remote memory space. | |
5621 | MYADDR is the address of the buffer in our space. | |
5622 | LEN is the number of bytes. | |
5623 | ||
5624 | Returns number of bytes transferred, or 0 (setting errno) for | |
5625 | error. Only transfer a single packet. */ | |
5626 | ||
5627 | int | |
5628 | remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, int len) | |
5629 | { | |
5630 | char *packet_format = 0; | |
5631 | ||
5632 | /* Check whether the target supports binary download. */ | |
5633 | check_binary_download (memaddr); | |
5634 | ||
5635 | switch (remote_protocol_packets[PACKET_X].support) | |
5636 | { | |
5637 | case PACKET_ENABLE: | |
5638 | packet_format = "X"; | |
5639 | break; | |
5640 | case PACKET_DISABLE: | |
5641 | packet_format = "M"; | |
5642 | break; | |
5643 | case PACKET_SUPPORT_UNKNOWN: | |
5644 | internal_error (__FILE__, __LINE__, | |
5645 | _("remote_write_bytes: bad internal state")); | |
5646 | default: | |
5647 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
5648 | } | |
5649 | ||
5650 | return remote_write_bytes_aux (packet_format, | |
5651 | memaddr, myaddr, len, packet_format[0], 1); | |
5652 | } | |
5653 | ||
c906108c SS |
5654 | /* Read memory data directly from the remote machine. |
5655 | This does not use the data cache; the data cache uses this. | |
5656 | MEMADDR is the address in the remote memory space. | |
5657 | MYADDR is the address of the buffer in our space. | |
5658 | LEN is the number of bytes. | |
5659 | ||
5660 | Returns number of bytes transferred, or 0 for error. */ | |
5661 | ||
917317f4 JM |
5662 | /* NOTE: cagney/1999-10-18: This function (and its siblings in other |
5663 | remote targets) shouldn't attempt to read the entire buffer. | |
5664 | Instead it should read a single packet worth of data and then | |
5665 | return the byte size of that packet to the caller. The caller (its | |
5666 | caller and its callers caller ;-) already contains code for | |
23860348 | 5667 | handling partial reads. */ |
917317f4 | 5668 | |
449092f6 | 5669 | int |
cfd77fa1 | 5670 | remote_read_bytes (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
c906108c | 5671 | { |
6d820c5c | 5672 | struct remote_state *rs = get_remote_state (); |
23860348 | 5673 | int max_buf_size; /* Max size of packet output buffer. */ |
c906108c SS |
5674 | int origlen; |
5675 | ||
b2182ed2 DJ |
5676 | if (len <= 0) |
5677 | return 0; | |
5678 | ||
11cf8741 | 5679 | max_buf_size = get_memory_read_packet_size (); |
6d820c5c DJ |
5680 | /* The packet buffer will be large enough for the payload; |
5681 | get_memory_packet_size ensures this. */ | |
c906108c SS |
5682 | |
5683 | origlen = len; | |
5684 | while (len > 0) | |
5685 | { | |
c906108c SS |
5686 | char *p; |
5687 | int todo; | |
5688 | int i; | |
5689 | ||
c5aa993b | 5690 | todo = min (len, max_buf_size / 2); /* num bytes that will fit */ |
c906108c SS |
5691 | |
5692 | /* construct "m"<memaddr>","<len>" */ | |
2e9f7625 | 5693 | /* sprintf (rs->buf, "m%lx,%x", (unsigned long) memaddr, todo); */ |
c906108c | 5694 | memaddr = remote_address_masked (memaddr); |
2e9f7625 | 5695 | p = rs->buf; |
c906108c SS |
5696 | *p++ = 'm'; |
5697 | p += hexnumstr (p, (ULONGEST) memaddr); | |
5698 | *p++ = ','; | |
5699 | p += hexnumstr (p, (ULONGEST) todo); | |
5700 | *p = '\0'; | |
5701 | ||
2e9f7625 | 5702 | putpkt (rs->buf); |
6d820c5c | 5703 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 5704 | |
2e9f7625 DJ |
5705 | if (rs->buf[0] == 'E' |
5706 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
5707 | && rs->buf[3] == '\0') | |
c906108c | 5708 | { |
23860348 MS |
5709 | /* There is no correspondance between what the remote |
5710 | protocol uses for errors and errno codes. We would like | |
5711 | a cleaner way of representing errors (big enough to | |
5712 | include errno codes, bfd_error codes, and others). But | |
5713 | for now just return EIO. */ | |
c906108c SS |
5714 | errno = EIO; |
5715 | return 0; | |
5716 | } | |
5717 | ||
c5aa993b JM |
5718 | /* Reply describes memory byte by byte, |
5719 | each byte encoded as two hex characters. */ | |
c906108c | 5720 | |
2e9f7625 | 5721 | p = rs->buf; |
30559e10 | 5722 | if ((i = hex2bin (p, myaddr, todo)) < todo) |
c906108c | 5723 | { |
30559e10 | 5724 | /* Reply is short. This means that we were able to read |
23860348 | 5725 | only part of what we wanted to. */ |
30559e10 | 5726 | return i + (origlen - len); |
c906108c SS |
5727 | } |
5728 | myaddr += todo; | |
5729 | memaddr += todo; | |
5730 | len -= todo; | |
5731 | } | |
5732 | return origlen; | |
5733 | } | |
74531fed PA |
5734 | \f |
5735 | ||
5736 | /* Remote notification handler. */ | |
5737 | ||
5738 | static void | |
5739 | handle_notification (char *buf, size_t length) | |
5740 | { | |
5741 | if (strncmp (buf, "Stop:", 5) == 0) | |
5742 | { | |
5743 | if (pending_stop_reply) | |
5744 | /* We've already parsed the in-flight stop-reply, but the stub | |
5745 | for some reason thought we didn't, possibly due to timeout | |
5746 | on its side. Just ignore it. */ | |
5747 | ; | |
5748 | else | |
5749 | { | |
5750 | struct cleanup *old_chain; | |
5751 | struct stop_reply *reply = stop_reply_xmalloc (); | |
5752 | old_chain = make_cleanup (do_stop_reply_xfree, reply); | |
5753 | ||
5754 | remote_parse_stop_reply (buf + 5, reply); | |
5755 | ||
5756 | discard_cleanups (old_chain); | |
5757 | ||
5758 | /* Be careful to only set it after parsing, since an error | |
5759 | may be thrown then. */ | |
5760 | pending_stop_reply = reply; | |
5761 | ||
5762 | /* Notify the event loop there's a stop reply to acknowledge | |
5763 | and that there may be more events to fetch. */ | |
5764 | mark_async_event_handler (remote_async_get_pending_events_token); | |
5765 | } | |
5766 | } | |
5767 | else | |
5768 | /* We ignore notifications we don't recognize, for compatibility | |
5769 | with newer stubs. */ | |
5770 | ; | |
5771 | } | |
5772 | ||
c906108c SS |
5773 | \f |
5774 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
23860348 MS |
5775 | transferring to or from debugger address BUFFER. Write to inferior |
5776 | if SHOULD_WRITE is nonzero. Returns length of data written or | |
5777 | read; 0 for error. TARGET is unused. */ | |
392a587b | 5778 | |
c906108c | 5779 | static int |
961cb7b5 | 5780 | remote_xfer_memory (CORE_ADDR mem_addr, gdb_byte *buffer, int mem_len, |
0a65a603 | 5781 | int should_write, struct mem_attrib *attrib, |
29e57380 | 5782 | struct target_ops *target) |
c906108c | 5783 | { |
4930751a C |
5784 | int res; |
5785 | ||
82f73884 PA |
5786 | set_general_thread (inferior_ptid); |
5787 | ||
4930751a | 5788 | if (should_write) |
b2182ed2 | 5789 | res = remote_write_bytes (mem_addr, buffer, mem_len); |
4930751a | 5790 | else |
b2182ed2 | 5791 | res = remote_read_bytes (mem_addr, buffer, mem_len); |
4930751a C |
5792 | |
5793 | return res; | |
c906108c SS |
5794 | } |
5795 | ||
a76d924d DJ |
5796 | /* Sends a packet with content determined by the printf format string |
5797 | FORMAT and the remaining arguments, then gets the reply. Returns | |
5798 | whether the packet was a success, a failure, or unknown. */ | |
5799 | ||
2c0b251b | 5800 | static enum packet_result |
a76d924d DJ |
5801 | remote_send_printf (const char *format, ...) |
5802 | { | |
5803 | struct remote_state *rs = get_remote_state (); | |
5804 | int max_size = get_remote_packet_size (); | |
5805 | ||
5806 | va_list ap; | |
5807 | va_start (ap, format); | |
5808 | ||
5809 | rs->buf[0] = '\0'; | |
5810 | if (vsnprintf (rs->buf, max_size, format, ap) >= max_size) | |
5811 | internal_error (__FILE__, __LINE__, "Too long remote packet."); | |
5812 | ||
5813 | if (putpkt (rs->buf) < 0) | |
5814 | error (_("Communication problem with target.")); | |
5815 | ||
5816 | rs->buf[0] = '\0'; | |
5817 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5818 | ||
5819 | return packet_check_result (rs->buf); | |
5820 | } | |
5821 | ||
5822 | static void | |
5823 | restore_remote_timeout (void *p) | |
5824 | { | |
5825 | int value = *(int *)p; | |
5826 | remote_timeout = value; | |
5827 | } | |
5828 | ||
5829 | /* Flash writing can take quite some time. We'll set | |
5830 | effectively infinite timeout for flash operations. | |
5831 | In future, we'll need to decide on a better approach. */ | |
5832 | static const int remote_flash_timeout = 1000; | |
5833 | ||
5834 | static void | |
5835 | remote_flash_erase (struct target_ops *ops, | |
5836 | ULONGEST address, LONGEST length) | |
5837 | { | |
5af949e3 | 5838 | int addr_size = gdbarch_addr_bit (target_gdbarch) / 8; |
a76d924d DJ |
5839 | int saved_remote_timeout = remote_timeout; |
5840 | enum packet_result ret; | |
5841 | ||
5842 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
5843 | &saved_remote_timeout); | |
5844 | remote_timeout = remote_flash_timeout; | |
5845 | ||
5846 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
5af949e3 | 5847 | phex (address, addr_size), |
a76d924d DJ |
5848 | phex (length, 4)); |
5849 | switch (ret) | |
5850 | { | |
5851 | case PACKET_UNKNOWN: | |
5852 | error (_("Remote target does not support flash erase")); | |
5853 | case PACKET_ERROR: | |
5854 | error (_("Error erasing flash with vFlashErase packet")); | |
5855 | default: | |
5856 | break; | |
5857 | } | |
5858 | ||
5859 | do_cleanups (back_to); | |
5860 | } | |
5861 | ||
5862 | static LONGEST | |
5863 | remote_flash_write (struct target_ops *ops, | |
5864 | ULONGEST address, LONGEST length, | |
5865 | const gdb_byte *data) | |
5866 | { | |
5867 | int saved_remote_timeout = remote_timeout; | |
5868 | int ret; | |
5869 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
5870 | &saved_remote_timeout); | |
5871 | ||
5872 | remote_timeout = remote_flash_timeout; | |
5873 | ret = remote_write_bytes_aux ("vFlashWrite:", address, data, length, 'X', 0); | |
5874 | do_cleanups (back_to); | |
5875 | ||
5876 | return ret; | |
5877 | } | |
5878 | ||
5879 | static void | |
5880 | remote_flash_done (struct target_ops *ops) | |
5881 | { | |
5882 | int saved_remote_timeout = remote_timeout; | |
5883 | int ret; | |
5884 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
5885 | &saved_remote_timeout); | |
5886 | ||
5887 | remote_timeout = remote_flash_timeout; | |
5888 | ret = remote_send_printf ("vFlashDone"); | |
5889 | do_cleanups (back_to); | |
5890 | ||
5891 | switch (ret) | |
5892 | { | |
5893 | case PACKET_UNKNOWN: | |
5894 | error (_("Remote target does not support vFlashDone")); | |
5895 | case PACKET_ERROR: | |
5896 | error (_("Error finishing flash operation")); | |
5897 | default: | |
5898 | break; | |
5899 | } | |
5900 | } | |
5901 | ||
c906108c | 5902 | static void |
fba45db2 | 5903 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
5904 | { |
5905 | puts_filtered ("Debugging a target over a serial line.\n"); | |
5906 | } | |
5907 | \f | |
5908 | /* Stuff for dealing with the packets which are part of this protocol. | |
5909 | See comment at top of file for details. */ | |
5910 | ||
0876f84a | 5911 | /* Read a single character from the remote end. */ |
c906108c SS |
5912 | |
5913 | static int | |
fba45db2 | 5914 | readchar (int timeout) |
c906108c SS |
5915 | { |
5916 | int ch; | |
5917 | ||
2cd58942 | 5918 | ch = serial_readchar (remote_desc, timeout); |
c906108c | 5919 | |
2acceee2 | 5920 | if (ch >= 0) |
0876f84a | 5921 | return ch; |
2acceee2 JM |
5922 | |
5923 | switch ((enum serial_rc) ch) | |
c906108c SS |
5924 | { |
5925 | case SERIAL_EOF: | |
ce5ce7ed | 5926 | pop_target (); |
8a3fe4f8 | 5927 | error (_("Remote connection closed")); |
2acceee2 | 5928 | /* no return */ |
c906108c | 5929 | case SERIAL_ERROR: |
e2e0b3e5 | 5930 | perror_with_name (_("Remote communication error")); |
2acceee2 | 5931 | /* no return */ |
c906108c | 5932 | case SERIAL_TIMEOUT: |
2acceee2 | 5933 | break; |
c906108c | 5934 | } |
2acceee2 | 5935 | return ch; |
c906108c SS |
5936 | } |
5937 | ||
6d820c5c DJ |
5938 | /* Send the command in *BUF to the remote machine, and read the reply |
5939 | into *BUF. Report an error if we get an error reply. Resize | |
5940 | *BUF using xrealloc if necessary to hold the result, and update | |
5941 | *SIZEOF_BUF. */ | |
c906108c SS |
5942 | |
5943 | static void | |
6d820c5c DJ |
5944 | remote_send (char **buf, |
5945 | long *sizeof_buf) | |
c906108c | 5946 | { |
6d820c5c | 5947 | putpkt (*buf); |
c2d11a7d | 5948 | getpkt (buf, sizeof_buf, 0); |
c906108c | 5949 | |
6d820c5c DJ |
5950 | if ((*buf)[0] == 'E') |
5951 | error (_("Remote failure reply: %s"), *buf); | |
c906108c SS |
5952 | } |
5953 | ||
6e5abd65 PA |
5954 | /* Return a pointer to an xmalloc'ed string representing an escaped |
5955 | version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t, | |
5956 | etc. The caller is responsible for releasing the returned | |
5957 | memory. */ | |
5958 | ||
5959 | static char * | |
5960 | escape_buffer (const char *buf, int n) | |
5961 | { | |
5962 | struct cleanup *old_chain; | |
5963 | struct ui_file *stb; | |
5964 | char *str; | |
5965 | long length; | |
5966 | ||
5967 | stb = mem_fileopen (); | |
5968 | old_chain = make_cleanup_ui_file_delete (stb); | |
5969 | ||
5970 | fputstrn_unfiltered (buf, n, 0, stb); | |
5971 | str = ui_file_xstrdup (stb, &length); | |
5972 | do_cleanups (old_chain); | |
5973 | return str; | |
5974 | } | |
5975 | ||
c906108c SS |
5976 | /* Display a null-terminated packet on stdout, for debugging, using C |
5977 | string notation. */ | |
5978 | ||
5979 | static void | |
fba45db2 | 5980 | print_packet (char *buf) |
c906108c SS |
5981 | { |
5982 | puts_filtered ("\""); | |
43e526b9 | 5983 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
5984 | puts_filtered ("\""); |
5985 | } | |
5986 | ||
5987 | int | |
fba45db2 | 5988 | putpkt (char *buf) |
c906108c SS |
5989 | { |
5990 | return putpkt_binary (buf, strlen (buf)); | |
5991 | } | |
5992 | ||
5993 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 5994 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 5995 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
5996 | and for a possible /0 if we are debugging (remote_debug) and want |
5997 | to print the sent packet as a string. */ | |
c906108c SS |
5998 | |
5999 | static int | |
fba45db2 | 6000 | putpkt_binary (char *buf, int cnt) |
c906108c | 6001 | { |
2d717e4f | 6002 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
6003 | int i; |
6004 | unsigned char csum = 0; | |
11cf8741 | 6005 | char *buf2 = alloca (cnt + 6); |
085dd6e6 | 6006 | |
c906108c SS |
6007 | int ch; |
6008 | int tcount = 0; | |
6009 | char *p; | |
6010 | ||
e24a49d8 PA |
6011 | /* Catch cases like trying to read memory or listing threads while |
6012 | we're waiting for a stop reply. The remote server wouldn't be | |
6013 | ready to handle this request, so we'd hang and timeout. We don't | |
6014 | have to worry about this in synchronous mode, because in that | |
6015 | case it's not possible to issue a command while the target is | |
74531fed PA |
6016 | running. This is not a problem in non-stop mode, because in that |
6017 | case, the stub is always ready to process serial input. */ | |
6018 | if (!non_stop && target_can_async_p () && rs->waiting_for_stop_reply) | |
e24a49d8 PA |
6019 | error (_("Cannot execute this command while the target is running.")); |
6020 | ||
2d717e4f DJ |
6021 | /* We're sending out a new packet. Make sure we don't look at a |
6022 | stale cached response. */ | |
6023 | rs->cached_wait_status = 0; | |
6024 | ||
c906108c SS |
6025 | /* Copy the packet into buffer BUF2, encapsulating it |
6026 | and giving it a checksum. */ | |
6027 | ||
c906108c SS |
6028 | p = buf2; |
6029 | *p++ = '$'; | |
6030 | ||
6031 | for (i = 0; i < cnt; i++) | |
6032 | { | |
6033 | csum += buf[i]; | |
6034 | *p++ = buf[i]; | |
6035 | } | |
6036 | *p++ = '#'; | |
6037 | *p++ = tohex ((csum >> 4) & 0xf); | |
6038 | *p++ = tohex (csum & 0xf); | |
6039 | ||
6040 | /* Send it over and over until we get a positive ack. */ | |
6041 | ||
6042 | while (1) | |
6043 | { | |
6044 | int started_error_output = 0; | |
6045 | ||
6046 | if (remote_debug) | |
6047 | { | |
6e5abd65 PA |
6048 | struct cleanup *old_chain; |
6049 | char *str; | |
6050 | ||
c906108c | 6051 | *p = '\0'; |
6e5abd65 PA |
6052 | str = escape_buffer (buf2, p - buf2); |
6053 | old_chain = make_cleanup (xfree, str); | |
6054 | fprintf_unfiltered (gdb_stdlog, "Sending packet: %s...", str); | |
0f71a2f6 | 6055 | gdb_flush (gdb_stdlog); |
6e5abd65 | 6056 | do_cleanups (old_chain); |
c906108c | 6057 | } |
2cd58942 | 6058 | if (serial_write (remote_desc, buf2, p - buf2)) |
e2e0b3e5 | 6059 | perror_with_name (_("putpkt: write failed")); |
c906108c | 6060 | |
a6f3e723 SL |
6061 | /* If this is a no acks version of the remote protocol, send the |
6062 | packet and move on. */ | |
6063 | if (rs->noack_mode) | |
6064 | break; | |
6065 | ||
74531fed PA |
6066 | /* Read until either a timeout occurs (-2) or '+' is read. |
6067 | Handle any notification that arrives in the mean time. */ | |
c906108c SS |
6068 | while (1) |
6069 | { | |
6070 | ch = readchar (remote_timeout); | |
6071 | ||
c5aa993b | 6072 | if (remote_debug) |
c906108c SS |
6073 | { |
6074 | switch (ch) | |
6075 | { | |
6076 | case '+': | |
1216fa2c | 6077 | case '-': |
c906108c SS |
6078 | case SERIAL_TIMEOUT: |
6079 | case '$': | |
74531fed | 6080 | case '%': |
c906108c SS |
6081 | if (started_error_output) |
6082 | { | |
6083 | putchar_unfiltered ('\n'); | |
6084 | started_error_output = 0; | |
6085 | } | |
6086 | } | |
6087 | } | |
6088 | ||
6089 | switch (ch) | |
6090 | { | |
6091 | case '+': | |
6092 | if (remote_debug) | |
0f71a2f6 | 6093 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 6094 | return 1; |
1216fa2c AC |
6095 | case '-': |
6096 | if (remote_debug) | |
6097 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
c906108c | 6098 | case SERIAL_TIMEOUT: |
c5aa993b | 6099 | tcount++; |
c906108c SS |
6100 | if (tcount > 3) |
6101 | return 0; | |
23860348 | 6102 | break; /* Retransmit buffer. */ |
c906108c SS |
6103 | case '$': |
6104 | { | |
40e3f985 | 6105 | if (remote_debug) |
2bc416ba | 6106 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 6107 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
6108 | /* It's probably an old response sent because an ACK |
6109 | was lost. Gobble up the packet and ack it so it | |
6110 | doesn't get retransmitted when we resend this | |
6111 | packet. */ | |
6d820c5c | 6112 | skip_frame (); |
d6f7abdf | 6113 | serial_write (remote_desc, "+", 1); |
23860348 | 6114 | continue; /* Now, go look for +. */ |
c906108c | 6115 | } |
74531fed PA |
6116 | |
6117 | case '%': | |
6118 | { | |
6119 | int val; | |
6120 | ||
6121 | /* If we got a notification, handle it, and go back to looking | |
6122 | for an ack. */ | |
6123 | /* We've found the start of a notification. Now | |
6124 | collect the data. */ | |
6125 | val = read_frame (&rs->buf, &rs->buf_size); | |
6126 | if (val >= 0) | |
6127 | { | |
6128 | if (remote_debug) | |
6129 | { | |
6e5abd65 PA |
6130 | struct cleanup *old_chain; |
6131 | char *str; | |
6132 | ||
6133 | str = escape_buffer (rs->buf, val); | |
6134 | old_chain = make_cleanup (xfree, str); | |
6135 | fprintf_unfiltered (gdb_stdlog, | |
6136 | " Notification received: %s\n", | |
6137 | str); | |
6138 | do_cleanups (old_chain); | |
74531fed PA |
6139 | } |
6140 | handle_notification (rs->buf, val); | |
6141 | /* We're in sync now, rewait for the ack. */ | |
6142 | tcount = 0; | |
6143 | } | |
6144 | else | |
6145 | { | |
6146 | if (remote_debug) | |
6147 | { | |
6148 | if (!started_error_output) | |
6149 | { | |
6150 | started_error_output = 1; | |
6151 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); | |
6152 | } | |
6153 | fputc_unfiltered (ch & 0177, gdb_stdlog); | |
6154 | fprintf_unfiltered (gdb_stdlog, "%s", rs->buf); | |
6155 | } | |
6156 | } | |
6157 | continue; | |
6158 | } | |
6159 | /* fall-through */ | |
c906108c SS |
6160 | default: |
6161 | if (remote_debug) | |
6162 | { | |
6163 | if (!started_error_output) | |
6164 | { | |
6165 | started_error_output = 1; | |
0f71a2f6 | 6166 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 6167 | } |
0f71a2f6 | 6168 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
6169 | } |
6170 | continue; | |
6171 | } | |
23860348 | 6172 | break; /* Here to retransmit. */ |
c906108c SS |
6173 | } |
6174 | ||
6175 | #if 0 | |
6176 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
6177 | able to get out next time we call QUIT, without anything as |
6178 | violent as interrupt_query. If we want to provide a way out of | |
6179 | here without getting to the next QUIT, it should be based on | |
6180 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
6181 | if (quit_flag) |
6182 | { | |
6183 | quit_flag = 0; | |
6184 | interrupt_query (); | |
6185 | } | |
6186 | #endif | |
6187 | } | |
a6f3e723 | 6188 | return 0; |
c906108c SS |
6189 | } |
6190 | ||
6d820c5c DJ |
6191 | /* Come here after finding the start of a frame when we expected an |
6192 | ack. Do our best to discard the rest of this packet. */ | |
6193 | ||
6194 | static void | |
6195 | skip_frame (void) | |
6196 | { | |
6197 | int c; | |
6198 | ||
6199 | while (1) | |
6200 | { | |
6201 | c = readchar (remote_timeout); | |
6202 | switch (c) | |
6203 | { | |
6204 | case SERIAL_TIMEOUT: | |
6205 | /* Nothing we can do. */ | |
6206 | return; | |
6207 | case '#': | |
6208 | /* Discard the two bytes of checksum and stop. */ | |
6209 | c = readchar (remote_timeout); | |
6210 | if (c >= 0) | |
6211 | c = readchar (remote_timeout); | |
6212 | ||
6213 | return; | |
6214 | case '*': /* Run length encoding. */ | |
6215 | /* Discard the repeat count. */ | |
6216 | c = readchar (remote_timeout); | |
6217 | if (c < 0) | |
6218 | return; | |
6219 | break; | |
6220 | default: | |
6221 | /* A regular character. */ | |
6222 | break; | |
6223 | } | |
6224 | } | |
6225 | } | |
6226 | ||
c906108c | 6227 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
6228 | into *BUF, verifying the checksum, length, and handling run-length |
6229 | compression. NUL terminate the buffer. If there is not enough room, | |
6230 | expand *BUF using xrealloc. | |
c906108c | 6231 | |
c2d11a7d JM |
6232 | Returns -1 on error, number of characters in buffer (ignoring the |
6233 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 6234 | SERIAL status indications). */ |
c2d11a7d JM |
6235 | |
6236 | static long | |
6d820c5c DJ |
6237 | read_frame (char **buf_p, |
6238 | long *sizeof_buf) | |
c906108c SS |
6239 | { |
6240 | unsigned char csum; | |
c2d11a7d | 6241 | long bc; |
c906108c | 6242 | int c; |
6d820c5c | 6243 | char *buf = *buf_p; |
a6f3e723 | 6244 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
6245 | |
6246 | csum = 0; | |
c2d11a7d | 6247 | bc = 0; |
c906108c SS |
6248 | |
6249 | while (1) | |
6250 | { | |
6251 | c = readchar (remote_timeout); | |
c906108c SS |
6252 | switch (c) |
6253 | { | |
6254 | case SERIAL_TIMEOUT: | |
6255 | if (remote_debug) | |
0f71a2f6 | 6256 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 6257 | return -1; |
c906108c SS |
6258 | case '$': |
6259 | if (remote_debug) | |
0f71a2f6 JM |
6260 | fputs_filtered ("Saw new packet start in middle of old one\n", |
6261 | gdb_stdlog); | |
23860348 | 6262 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
6263 | case '#': |
6264 | { | |
6265 | unsigned char pktcsum; | |
e1b09194 AC |
6266 | int check_0 = 0; |
6267 | int check_1 = 0; | |
c906108c | 6268 | |
c2d11a7d | 6269 | buf[bc] = '\0'; |
c906108c | 6270 | |
e1b09194 AC |
6271 | check_0 = readchar (remote_timeout); |
6272 | if (check_0 >= 0) | |
6273 | check_1 = readchar (remote_timeout); | |
802188a7 | 6274 | |
e1b09194 AC |
6275 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
6276 | { | |
6277 | if (remote_debug) | |
2bc416ba | 6278 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 6279 | gdb_stdlog); |
e1b09194 AC |
6280 | return -1; |
6281 | } | |
6282 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
6283 | { |
6284 | if (remote_debug) | |
2bc416ba | 6285 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 6286 | gdb_stdlog); |
40e3f985 FN |
6287 | return -1; |
6288 | } | |
c906108c | 6289 | |
a6f3e723 SL |
6290 | /* Don't recompute the checksum; with no ack packets we |
6291 | don't have any way to indicate a packet retransmission | |
6292 | is necessary. */ | |
6293 | if (rs->noack_mode) | |
6294 | return bc; | |
6295 | ||
e1b09194 | 6296 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 6297 | if (csum == pktcsum) |
c2d11a7d | 6298 | return bc; |
c906108c | 6299 | |
c5aa993b | 6300 | if (remote_debug) |
c906108c | 6301 | { |
6e5abd65 PA |
6302 | struct cleanup *old_chain; |
6303 | char *str; | |
6304 | ||
6305 | str = escape_buffer (buf, bc); | |
6306 | old_chain = make_cleanup (xfree, str); | |
6307 | fprintf_unfiltered (gdb_stdlog, | |
6308 | "\ | |
6309 | Bad checksum, sentsum=0x%x, csum=0x%x, buf=%s\n", | |
6310 | pktcsum, csum, str); | |
6311 | do_cleanups (old_chain); | |
c906108c | 6312 | } |
c2d11a7d | 6313 | /* Number of characters in buffer ignoring trailing |
23860348 | 6314 | NULL. */ |
c2d11a7d | 6315 | return -1; |
c906108c | 6316 | } |
23860348 | 6317 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
6318 | { |
6319 | int repeat; | |
6320 | csum += c; | |
c906108c | 6321 | |
b4501125 AC |
6322 | c = readchar (remote_timeout); |
6323 | csum += c; | |
23860348 | 6324 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 6325 | |
23860348 | 6326 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 6327 | |
6d820c5c | 6328 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 6329 | { |
6d820c5c DJ |
6330 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
6331 | { | |
6332 | /* Make some more room in the buffer. */ | |
6333 | *sizeof_buf += repeat; | |
6334 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
6335 | buf = *buf_p; | |
6336 | } | |
6337 | ||
c2d11a7d JM |
6338 | memset (&buf[bc], buf[bc - 1], repeat); |
6339 | bc += repeat; | |
c2c6d25f JM |
6340 | continue; |
6341 | } | |
6342 | ||
c2d11a7d | 6343 | buf[bc] = '\0'; |
6d820c5c | 6344 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 6345 | return -1; |
c2c6d25f | 6346 | } |
c906108c | 6347 | default: |
6d820c5c | 6348 | if (bc >= *sizeof_buf - 1) |
c906108c | 6349 | { |
6d820c5c DJ |
6350 | /* Make some more room in the buffer. */ |
6351 | *sizeof_buf *= 2; | |
6352 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
6353 | buf = *buf_p; | |
c906108c SS |
6354 | } |
6355 | ||
6d820c5c DJ |
6356 | buf[bc++] = c; |
6357 | csum += c; | |
6358 | continue; | |
c906108c SS |
6359 | } |
6360 | } | |
6361 | } | |
6362 | ||
6363 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
6364 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
6365 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
6366 | rather than timing out; this is used (in synchronous mode) to wait | |
6367 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
6368 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
6369 | don't have to change all the calls to getpkt to deal with the | |
6370 | return value, because at the moment I don't know what the right | |
23860348 | 6371 | thing to do it for those. */ |
c906108c | 6372 | void |
6d820c5c DJ |
6373 | getpkt (char **buf, |
6374 | long *sizeof_buf, | |
c2d11a7d | 6375 | int forever) |
d9fcf2fb JM |
6376 | { |
6377 | int timed_out; | |
6378 | ||
6379 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
6380 | } | |
6381 | ||
6382 | ||
6383 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
6384 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
6385 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
6386 | rather than timing out; this is used (in synchronous mode) to wait | |
6387 | for a target that is is executing user code to stop. If FOREVER == | |
6388 | 0, this function is allowed to time out gracefully and return an | |
74531fed PA |
6389 | indication of this to the caller. Otherwise return the number of |
6390 | bytes read. If EXPECTING_NOTIF, consider receiving a notification | |
6391 | enough reason to return to the caller. */ | |
6392 | ||
3172dc30 | 6393 | static int |
74531fed PA |
6394 | getpkt_or_notif_sane_1 (char **buf, long *sizeof_buf, int forever, |
6395 | int expecting_notif) | |
c906108c | 6396 | { |
2d717e4f | 6397 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
6398 | int c; |
6399 | int tries; | |
6400 | int timeout; | |
df4b58fe | 6401 | int val = -1; |
c906108c | 6402 | |
2d717e4f DJ |
6403 | /* We're reading a new response. Make sure we don't look at a |
6404 | previously cached response. */ | |
6405 | rs->cached_wait_status = 0; | |
6406 | ||
6d820c5c | 6407 | strcpy (*buf, "timeout"); |
c906108c SS |
6408 | |
6409 | if (forever) | |
74531fed PA |
6410 | timeout = watchdog > 0 ? watchdog : -1; |
6411 | else if (expecting_notif) | |
6412 | timeout = 0; /* There should already be a char in the buffer. If | |
6413 | not, bail out. */ | |
c906108c SS |
6414 | else |
6415 | timeout = remote_timeout; | |
6416 | ||
6417 | #define MAX_TRIES 3 | |
6418 | ||
74531fed PA |
6419 | /* Process any number of notifications, and then return when |
6420 | we get a packet. */ | |
6421 | for (;;) | |
c906108c | 6422 | { |
74531fed PA |
6423 | /* If we get a timeout or bad checksm, retry up to MAX_TRIES |
6424 | times. */ | |
6425 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
c906108c | 6426 | { |
74531fed PA |
6427 | /* This can loop forever if the remote side sends us |
6428 | characters continuously, but if it pauses, we'll get | |
6429 | SERIAL_TIMEOUT from readchar because of timeout. Then | |
6430 | we'll count that as a retry. | |
6431 | ||
6432 | Note that even when forever is set, we will only wait | |
6433 | forever prior to the start of a packet. After that, we | |
6434 | expect characters to arrive at a brisk pace. They should | |
6435 | show up within remote_timeout intervals. */ | |
6436 | do | |
6437 | c = readchar (timeout); | |
6438 | while (c != SERIAL_TIMEOUT && c != '$' && c != '%'); | |
c906108c SS |
6439 | |
6440 | if (c == SERIAL_TIMEOUT) | |
6441 | { | |
74531fed PA |
6442 | if (expecting_notif) |
6443 | return -1; /* Don't complain, it's normal to not get | |
6444 | anything in this case. */ | |
6445 | ||
23860348 | 6446 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 6447 | { |
2acceee2 | 6448 | QUIT; |
ce5ce7ed | 6449 | pop_target (); |
489eaeba | 6450 | error (_("Watchdog timeout has expired. Target detached.")); |
c906108c | 6451 | } |
c906108c | 6452 | if (remote_debug) |
0f71a2f6 | 6453 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c | 6454 | } |
74531fed PA |
6455 | else |
6456 | { | |
6457 | /* We've found the start of a packet or notification. | |
6458 | Now collect the data. */ | |
6459 | val = read_frame (buf, sizeof_buf); | |
6460 | if (val >= 0) | |
6461 | break; | |
6462 | } | |
6463 | ||
6464 | serial_write (remote_desc, "-", 1); | |
c906108c | 6465 | } |
c906108c | 6466 | |
74531fed PA |
6467 | if (tries > MAX_TRIES) |
6468 | { | |
6469 | /* We have tried hard enough, and just can't receive the | |
6470 | packet/notification. Give up. */ | |
6471 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); | |
c906108c | 6472 | |
74531fed PA |
6473 | /* Skip the ack char if we're in no-ack mode. */ |
6474 | if (!rs->noack_mode) | |
6475 | serial_write (remote_desc, "+", 1); | |
6476 | return -1; | |
6477 | } | |
c906108c | 6478 | |
74531fed PA |
6479 | /* If we got an ordinary packet, return that to our caller. */ |
6480 | if (c == '$') | |
c906108c SS |
6481 | { |
6482 | if (remote_debug) | |
43e526b9 | 6483 | { |
6e5abd65 PA |
6484 | struct cleanup *old_chain; |
6485 | char *str; | |
6486 | ||
6487 | str = escape_buffer (*buf, val); | |
6488 | old_chain = make_cleanup (xfree, str); | |
6489 | fprintf_unfiltered (gdb_stdlog, "Packet received: %s\n", str); | |
6490 | do_cleanups (old_chain); | |
43e526b9 | 6491 | } |
a6f3e723 SL |
6492 | |
6493 | /* Skip the ack char if we're in no-ack mode. */ | |
6494 | if (!rs->noack_mode) | |
6495 | serial_write (remote_desc, "+", 1); | |
0876f84a | 6496 | return val; |
c906108c SS |
6497 | } |
6498 | ||
74531fed PA |
6499 | /* If we got a notification, handle it, and go back to looking |
6500 | for a packet. */ | |
6501 | else | |
6502 | { | |
6503 | gdb_assert (c == '%'); | |
6504 | ||
6505 | if (remote_debug) | |
6506 | { | |
6e5abd65 PA |
6507 | struct cleanup *old_chain; |
6508 | char *str; | |
6509 | ||
6510 | str = escape_buffer (*buf, val); | |
6511 | old_chain = make_cleanup (xfree, str); | |
6512 | fprintf_unfiltered (gdb_stdlog, | |
6513 | " Notification received: %s\n", | |
6514 | str); | |
6515 | do_cleanups (old_chain); | |
74531fed | 6516 | } |
c906108c | 6517 | |
74531fed | 6518 | handle_notification (*buf, val); |
c906108c | 6519 | |
74531fed | 6520 | /* Notifications require no acknowledgement. */ |
a6f3e723 | 6521 | |
74531fed PA |
6522 | if (expecting_notif) |
6523 | return -1; | |
6524 | } | |
6525 | } | |
6526 | } | |
6527 | ||
6528 | static int | |
6529 | getpkt_sane (char **buf, long *sizeof_buf, int forever) | |
6530 | { | |
6531 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 0); | |
6532 | } | |
6533 | ||
6534 | static int | |
6535 | getpkt_or_notif_sane (char **buf, long *sizeof_buf, int forever) | |
6536 | { | |
6537 | return getpkt_or_notif_sane_1 (buf, sizeof_buf, forever, 1); | |
c906108c | 6538 | } |
74531fed | 6539 | |
c906108c SS |
6540 | \f |
6541 | static void | |
7d85a9c0 | 6542 | remote_kill (struct target_ops *ops) |
43ff13b4 | 6543 | { |
23860348 MS |
6544 | /* Use catch_errors so the user can quit from gdb even when we |
6545 | aren't on speaking terms with the remote system. */ | |
c5aa993b | 6546 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
6547 | |
6548 | /* Don't wait for it to die. I'm not really sure it matters whether | |
6549 | we do or not. For the existing stubs, kill is a noop. */ | |
6550 | target_mourn_inferior (); | |
6551 | } | |
6552 | ||
82f73884 PA |
6553 | static int |
6554 | remote_vkill (int pid, struct remote_state *rs) | |
6555 | { | |
6556 | if (remote_protocol_packets[PACKET_vKill].support == PACKET_DISABLE) | |
6557 | return -1; | |
6558 | ||
6559 | /* Tell the remote target to detach. */ | |
6560 | sprintf (rs->buf, "vKill;%x", pid); | |
6561 | putpkt (rs->buf); | |
6562 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6563 | ||
6564 | if (packet_ok (rs->buf, | |
6565 | &remote_protocol_packets[PACKET_vKill]) == PACKET_OK) | |
6566 | return 0; | |
6567 | else if (remote_protocol_packets[PACKET_vKill].support == PACKET_DISABLE) | |
6568 | return -1; | |
6569 | else | |
6570 | return 1; | |
6571 | } | |
6572 | ||
6573 | static void | |
7d85a9c0 | 6574 | extended_remote_kill (struct target_ops *ops) |
82f73884 PA |
6575 | { |
6576 | int res; | |
6577 | int pid = ptid_get_pid (inferior_ptid); | |
6578 | struct remote_state *rs = get_remote_state (); | |
6579 | ||
6580 | res = remote_vkill (pid, rs); | |
6581 | if (res == -1 && !remote_multi_process_p (rs)) | |
6582 | { | |
6583 | /* Don't try 'k' on a multi-process aware stub -- it has no way | |
6584 | to specify the pid. */ | |
6585 | ||
6586 | putpkt ("k"); | |
6587 | #if 0 | |
6588 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6589 | if (rs->buf[0] != 'O' || rs->buf[0] != 'K') | |
6590 | res = 1; | |
6591 | #else | |
6592 | /* Don't wait for it to die. I'm not really sure it matters whether | |
6593 | we do or not. For the existing stubs, kill is a noop. */ | |
6594 | res = 0; | |
6595 | #endif | |
6596 | } | |
6597 | ||
6598 | if (res != 0) | |
6599 | error (_("Can't kill process")); | |
6600 | ||
82f73884 PA |
6601 | target_mourn_inferior (); |
6602 | } | |
6603 | ||
c906108c | 6604 | static void |
136d6dae | 6605 | remote_mourn (struct target_ops *ops) |
c906108c | 6606 | { |
136d6dae | 6607 | remote_mourn_1 (ops); |
c906108c SS |
6608 | } |
6609 | ||
c906108c SS |
6610 | /* Worker function for remote_mourn. */ |
6611 | static void | |
fba45db2 | 6612 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
6613 | { |
6614 | unpush_target (target); | |
ce5ce7ed | 6615 | |
8a2492ee PA |
6616 | /* remote_close takes care of doing most of the clean up. */ |
6617 | generic_mourn_inferior (); | |
c906108c SS |
6618 | } |
6619 | ||
2d717e4f DJ |
6620 | static void |
6621 | extended_remote_mourn_1 (struct target_ops *target) | |
6622 | { | |
6623 | struct remote_state *rs = get_remote_state (); | |
c906108c | 6624 | |
e24a49d8 PA |
6625 | /* In case we got here due to an error, but we're going to stay |
6626 | connected. */ | |
6627 | rs->waiting_for_stop_reply = 0; | |
6628 | ||
74531fed PA |
6629 | /* We're no longer interested in these events. */ |
6630 | discard_pending_stop_replies (ptid_get_pid (inferior_ptid)); | |
6631 | ||
dc1981d7 PA |
6632 | /* If the current general thread belonged to the process we just |
6633 | detached from or has exited, the remote side current general | |
6634 | thread becomes undefined. Considering a case like this: | |
6635 | ||
6636 | - We just got here due to a detach. | |
6637 | - The process that we're detaching from happens to immediately | |
6638 | report a global breakpoint being hit in non-stop mode, in the | |
6639 | same thread we had selected before. | |
6640 | - GDB attaches to this process again. | |
6641 | - This event happens to be the next event we handle. | |
6642 | ||
6643 | GDB would consider that the current general thread didn't need to | |
6644 | be set on the stub side (with Hg), since for all it knew, | |
6645 | GENERAL_THREAD hadn't changed. | |
6646 | ||
6647 | Notice that although in all-stop mode, the remote server always | |
6648 | sets the current thread to the thread reporting the stop event, | |
6649 | that doesn't happen in non-stop mode; in non-stop, the stub *must | |
6650 | not* change the current thread when reporting a breakpoint hit, | |
6651 | due to the decoupling of event reporting and event handling. | |
6652 | ||
6653 | To keep things simple, we always invalidate our notion of the | |
6654 | current thread. */ | |
6655 | record_currthread (minus_one_ptid); | |
6656 | ||
2d717e4f DJ |
6657 | /* Unlike "target remote", we do not want to unpush the target; then |
6658 | the next time the user says "run", we won't be connected. */ | |
6659 | ||
48aa3c27 PA |
6660 | /* Call common code to mark the inferior as not running. */ |
6661 | generic_mourn_inferior (); | |
6662 | ||
d729566a | 6663 | if (!have_inferiors ()) |
2d717e4f | 6664 | { |
82f73884 PA |
6665 | if (!remote_multi_process_p (rs)) |
6666 | { | |
6667 | /* Check whether the target is running now - some remote stubs | |
6668 | automatically restart after kill. */ | |
6669 | putpkt ("?"); | |
6670 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6671 | ||
6672 | if (rs->buf[0] == 'S' || rs->buf[0] == 'T') | |
6673 | { | |
6674 | /* Assume that the target has been restarted. Set inferior_ptid | |
6675 | so that bits of core GDB realizes there's something here, e.g., | |
6676 | so that the user can say "kill" again. */ | |
6677 | inferior_ptid = magic_null_ptid; | |
6678 | } | |
82f73884 | 6679 | } |
2d717e4f DJ |
6680 | } |
6681 | } | |
c906108c SS |
6682 | |
6683 | static void | |
136d6dae | 6684 | extended_remote_mourn (struct target_ops *ops) |
c906108c | 6685 | { |
136d6dae | 6686 | extended_remote_mourn_1 (ops); |
2d717e4f | 6687 | } |
c906108c | 6688 | |
2d717e4f DJ |
6689 | static int |
6690 | extended_remote_run (char *args) | |
6691 | { | |
6692 | struct remote_state *rs = get_remote_state (); | |
6693 | char *p; | |
6694 | int len; | |
c906108c | 6695 | |
2d717e4f DJ |
6696 | /* If the user has disabled vRun support, or we have detected that |
6697 | support is not available, do not try it. */ | |
6698 | if (remote_protocol_packets[PACKET_vRun].support == PACKET_DISABLE) | |
6699 | return -1; | |
424163ea | 6700 | |
2d717e4f DJ |
6701 | strcpy (rs->buf, "vRun;"); |
6702 | len = strlen (rs->buf); | |
c906108c | 6703 | |
2d717e4f DJ |
6704 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
6705 | error (_("Remote file name too long for run packet")); | |
6706 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf + len, 0); | |
6707 | ||
d1a41061 | 6708 | gdb_assert (args != NULL); |
2d717e4f DJ |
6709 | if (*args) |
6710 | { | |
6711 | struct cleanup *back_to; | |
6712 | int i; | |
6713 | char **argv; | |
6714 | ||
d1a41061 | 6715 | argv = gdb_buildargv (args); |
2d717e4f DJ |
6716 | back_to = make_cleanup ((void (*) (void *)) freeargv, argv); |
6717 | for (i = 0; argv[i] != NULL; i++) | |
6718 | { | |
6719 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
6720 | error (_("Argument list too long for run packet")); | |
6721 | rs->buf[len++] = ';'; | |
6722 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf + len, 0); | |
6723 | } | |
6724 | do_cleanups (back_to); | |
6725 | } | |
6726 | ||
6727 | rs->buf[len++] = '\0'; | |
6728 | ||
6729 | putpkt (rs->buf); | |
6730 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6731 | ||
6732 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun]) == PACKET_OK) | |
6733 | { | |
6734 | /* We have a wait response; we don't need it, though. All is well. */ | |
6735 | return 0; | |
6736 | } | |
6737 | else if (remote_protocol_packets[PACKET_vRun].support == PACKET_DISABLE) | |
6738 | /* It wasn't disabled before, but it is now. */ | |
6739 | return -1; | |
6740 | else | |
6741 | { | |
6742 | if (remote_exec_file[0] == '\0') | |
6743 | error (_("Running the default executable on the remote target failed; " | |
6744 | "try \"set remote exec-file\"?")); | |
6745 | else | |
6746 | error (_("Running \"%s\" on the remote target failed"), | |
6747 | remote_exec_file); | |
6748 | } | |
c906108c SS |
6749 | } |
6750 | ||
2d717e4f DJ |
6751 | /* In the extended protocol we want to be able to do things like |
6752 | "run" and have them basically work as expected. So we need | |
6753 | a special create_inferior function. We support changing the | |
6754 | executable file and the command line arguments, but not the | |
6755 | environment. */ | |
6756 | ||
43ff13b4 | 6757 | static void |
2d717e4f | 6758 | extended_remote_create_inferior_1 (char *exec_file, char *args, |
75c99385 | 6759 | char **env, int from_tty) |
43ff13b4 | 6760 | { |
43ff13b4 | 6761 | /* If running asynchronously, register the target file descriptor |
23860348 | 6762 | with the event loop. */ |
75c99385 | 6763 | if (target_can_async_p ()) |
2acceee2 | 6764 | target_async (inferior_event_handler, 0); |
43ff13b4 JM |
6765 | |
6766 | /* Now restart the remote server. */ | |
2d717e4f DJ |
6767 | if (extended_remote_run (args) == -1) |
6768 | { | |
6769 | /* vRun was not supported. Fail if we need it to do what the | |
6770 | user requested. */ | |
6771 | if (remote_exec_file[0]) | |
6772 | error (_("Remote target does not support \"set remote exec-file\"")); | |
6773 | if (args[0]) | |
6774 | error (_("Remote target does not support \"set args\" or run <ARGS>")); | |
43ff13b4 | 6775 | |
2d717e4f DJ |
6776 | /* Fall back to "R". */ |
6777 | extended_remote_restart (); | |
6778 | } | |
424163ea | 6779 | |
45280a52 DJ |
6780 | /* Clean up from the last time we ran, before we mark the target |
6781 | running again. This will mark breakpoints uninserted, and | |
6782 | get_offsets may insert breakpoints. */ | |
6783 | init_thread_list (); | |
6784 | init_wait_for_inferior (); | |
6785 | ||
2d717e4f | 6786 | /* Now mark the inferior as running before we do anything else. */ |
79d7f229 | 6787 | inferior_ptid = magic_null_ptid; |
c0a2216e | 6788 | |
74531fed PA |
6789 | /* Now, if we have thread information, update inferior_ptid. */ |
6790 | inferior_ptid = remote_current_thread (inferior_ptid); | |
6791 | ||
0b16c5cf | 6792 | remote_add_inferior (ptid_get_pid (inferior_ptid), 0); |
c0a2216e PA |
6793 | add_thread_silent (inferior_ptid); |
6794 | ||
2d717e4f DJ |
6795 | /* Get updated offsets, if the stub uses qOffsets. */ |
6796 | get_offsets (); | |
2d717e4f DJ |
6797 | } |
6798 | ||
6799 | static void | |
136d6dae VP |
6800 | extended_remote_create_inferior (struct target_ops *ops, |
6801 | char *exec_file, char *args, | |
2d717e4f DJ |
6802 | char **env, int from_tty) |
6803 | { | |
75c99385 | 6804 | extended_remote_create_inferior_1 (exec_file, args, env, from_tty); |
43ff13b4 | 6805 | } |
c906108c | 6806 | \f |
c5aa993b | 6807 | |
8181d85f DJ |
6808 | /* Insert a breakpoint. On targets that have software breakpoint |
6809 | support, we ask the remote target to do the work; on targets | |
6810 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c SS |
6811 | |
6812 | static int | |
a6d9a66e UW |
6813 | remote_insert_breakpoint (struct gdbarch *gdbarch, |
6814 | struct bp_target_info *bp_tgt) | |
c906108c | 6815 | { |
d471ea57 AC |
6816 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
6817 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
6818 | fails, and the user has explicitly requested the Z support then | |
23860348 | 6819 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 6820 | |
444abaca | 6821 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 6822 | { |
7c0f6dcc | 6823 | CORE_ADDR addr = bp_tgt->placed_address; |
4fff2411 JZ |
6824 | struct remote_state *rs; |
6825 | char *p; | |
7c0f6dcc | 6826 | int bpsize; |
4fff2411 | 6827 | |
a6d9a66e | 6828 | gdbarch_breakpoint_from_pc (gdbarch, &addr, &bpsize); |
4fff2411 JZ |
6829 | |
6830 | rs = get_remote_state (); | |
6831 | p = rs->buf; | |
802188a7 | 6832 | |
96baa820 JM |
6833 | *(p++) = 'Z'; |
6834 | *(p++) = '0'; | |
6835 | *(p++) = ','; | |
7c0f6dcc | 6836 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 6837 | p += hexnumstr (p, addr); |
7c0f6dcc | 6838 | sprintf (p, ",%d", bpsize); |
802188a7 | 6839 | |
6d820c5c DJ |
6840 | putpkt (rs->buf); |
6841 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 6842 | |
6d820c5c | 6843 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 6844 | { |
d471ea57 AC |
6845 | case PACKET_ERROR: |
6846 | return -1; | |
6847 | case PACKET_OK: | |
7c0f6dcc JL |
6848 | bp_tgt->placed_address = addr; |
6849 | bp_tgt->placed_size = bpsize; | |
d471ea57 AC |
6850 | return 0; |
6851 | case PACKET_UNKNOWN: | |
6852 | break; | |
96baa820 JM |
6853 | } |
6854 | } | |
c906108c | 6855 | |
a6d9a66e | 6856 | return memory_insert_breakpoint (gdbarch, bp_tgt); |
c906108c SS |
6857 | } |
6858 | ||
6859 | static int | |
a6d9a66e UW |
6860 | remote_remove_breakpoint (struct gdbarch *gdbarch, |
6861 | struct bp_target_info *bp_tgt) | |
c906108c | 6862 | { |
8181d85f | 6863 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 6864 | struct remote_state *rs = get_remote_state (); |
96baa820 JM |
6865 | int bp_size; |
6866 | ||
444abaca | 6867 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 6868 | { |
6d820c5c | 6869 | char *p = rs->buf; |
802188a7 | 6870 | |
96baa820 JM |
6871 | *(p++) = 'z'; |
6872 | *(p++) = '0'; | |
6873 | *(p++) = ','; | |
6874 | ||
8181d85f DJ |
6875 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
6876 | p += hexnumstr (p, addr); | |
6877 | sprintf (p, ",%d", bp_tgt->placed_size); | |
802188a7 | 6878 | |
6d820c5c DJ |
6879 | putpkt (rs->buf); |
6880 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 6881 | |
6d820c5c | 6882 | return (rs->buf[0] == 'E'); |
96baa820 JM |
6883 | } |
6884 | ||
a6d9a66e | 6885 | return memory_remove_breakpoint (gdbarch, bp_tgt); |
c906108c SS |
6886 | } |
6887 | ||
d471ea57 AC |
6888 | static int |
6889 | watchpoint_to_Z_packet (int type) | |
6890 | { | |
6891 | switch (type) | |
6892 | { | |
6893 | case hw_write: | |
bb858e6a | 6894 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
6895 | break; |
6896 | case hw_read: | |
bb858e6a | 6897 | return Z_PACKET_READ_WP; |
d471ea57 AC |
6898 | break; |
6899 | case hw_access: | |
bb858e6a | 6900 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
6901 | break; |
6902 | default: | |
8e65ff28 | 6903 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 6904 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
6905 | } |
6906 | } | |
6907 | ||
3c3bea1c | 6908 | static int |
fba45db2 | 6909 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 6910 | { |
d01949b6 | 6911 | struct remote_state *rs = get_remote_state (); |
e514a9d6 | 6912 | char *p; |
d471ea57 | 6913 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 6914 | |
444abaca | 6915 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
5cffb350 | 6916 | return -1; |
802188a7 | 6917 | |
6d820c5c DJ |
6918 | sprintf (rs->buf, "Z%x,", packet); |
6919 | p = strchr (rs->buf, '\0'); | |
96baa820 JM |
6920 | addr = remote_address_masked (addr); |
6921 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 6922 | sprintf (p, ",%x", len); |
802188a7 | 6923 | |
6d820c5c DJ |
6924 | putpkt (rs->buf); |
6925 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 6926 | |
6d820c5c | 6927 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
6928 | { |
6929 | case PACKET_ERROR: | |
6930 | case PACKET_UNKNOWN: | |
6931 | return -1; | |
6932 | case PACKET_OK: | |
6933 | return 0; | |
6934 | } | |
8e65ff28 | 6935 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 6936 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
6937 | } |
6938 | ||
d471ea57 | 6939 | |
3c3bea1c | 6940 | static int |
fba45db2 | 6941 | remote_remove_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 6942 | { |
d01949b6 | 6943 | struct remote_state *rs = get_remote_state (); |
e514a9d6 | 6944 | char *p; |
d471ea57 AC |
6945 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
6946 | ||
444abaca | 6947 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
5cffb350 | 6948 | return -1; |
802188a7 | 6949 | |
6d820c5c DJ |
6950 | sprintf (rs->buf, "z%x,", packet); |
6951 | p = strchr (rs->buf, '\0'); | |
96baa820 JM |
6952 | addr = remote_address_masked (addr); |
6953 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 6954 | sprintf (p, ",%x", len); |
6d820c5c DJ |
6955 | putpkt (rs->buf); |
6956 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 6957 | |
6d820c5c | 6958 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
6959 | { |
6960 | case PACKET_ERROR: | |
6961 | case PACKET_UNKNOWN: | |
6962 | return -1; | |
6963 | case PACKET_OK: | |
6964 | return 0; | |
6965 | } | |
8e65ff28 | 6966 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 6967 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
6968 | } |
6969 | ||
3c3bea1c | 6970 | |
501eef12 AC |
6971 | int remote_hw_watchpoint_limit = -1; |
6972 | int remote_hw_breakpoint_limit = -1; | |
d471ea57 | 6973 | |
b9362cc7 | 6974 | static int |
3c3bea1c | 6975 | remote_check_watch_resources (int type, int cnt, int ot) |
96baa820 | 6976 | { |
3c3bea1c GS |
6977 | if (type == bp_hardware_breakpoint) |
6978 | { | |
6979 | if (remote_hw_breakpoint_limit == 0) | |
6980 | return 0; | |
501eef12 AC |
6981 | else if (remote_hw_breakpoint_limit < 0) |
6982 | return 1; | |
3c3bea1c GS |
6983 | else if (cnt <= remote_hw_breakpoint_limit) |
6984 | return 1; | |
6985 | } | |
6986 | else | |
6987 | { | |
6988 | if (remote_hw_watchpoint_limit == 0) | |
6989 | return 0; | |
501eef12 AC |
6990 | else if (remote_hw_watchpoint_limit < 0) |
6991 | return 1; | |
3c3bea1c GS |
6992 | else if (ot) |
6993 | return -1; | |
6994 | else if (cnt <= remote_hw_watchpoint_limit) | |
6995 | return 1; | |
6996 | } | |
6997 | return -1; | |
6998 | } | |
6999 | ||
b9362cc7 | 7000 | static int |
3c3bea1c GS |
7001 | remote_stopped_by_watchpoint (void) |
7002 | { | |
82f73884 | 7003 | return remote_stopped_by_watchpoint_p; |
3c3bea1c GS |
7004 | } |
7005 | ||
4aa7a7f5 JJ |
7006 | static int |
7007 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 7008 | { |
4aa7a7f5 | 7009 | int rc = 0; |
d983da9c | 7010 | if (remote_stopped_by_watchpoint ()) |
4aa7a7f5 JJ |
7011 | { |
7012 | *addr_p = remote_watch_data_address; | |
7013 | rc = 1; | |
7014 | } | |
7015 | ||
7016 | return rc; | |
3c3bea1c GS |
7017 | } |
7018 | ||
7019 | ||
7020 | static int | |
a6d9a66e UW |
7021 | remote_insert_hw_breakpoint (struct gdbarch *gdbarch, |
7022 | struct bp_target_info *bp_tgt) | |
3c3bea1c | 7023 | { |
8181d85f | 7024 | CORE_ADDR addr; |
4fff2411 JZ |
7025 | struct remote_state *rs; |
7026 | char *p; | |
802188a7 | 7027 | |
c8189ed1 | 7028 | /* The length field should be set to the size of a breakpoint |
8181d85f | 7029 | instruction, even though we aren't inserting one ourselves. */ |
c8189ed1 | 7030 | |
3b3b875c | 7031 | gdbarch_breakpoint_from_pc |
a6d9a66e | 7032 | (gdbarch, &bp_tgt->placed_address, &bp_tgt->placed_size); |
3c3bea1c | 7033 | |
444abaca | 7034 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 7035 | return -1; |
2bc416ba | 7036 | |
4fff2411 JZ |
7037 | rs = get_remote_state (); |
7038 | p = rs->buf; | |
7039 | ||
96baa820 JM |
7040 | *(p++) = 'Z'; |
7041 | *(p++) = '1'; | |
7042 | *(p++) = ','; | |
802188a7 | 7043 | |
8181d85f | 7044 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 7045 | p += hexnumstr (p, (ULONGEST) addr); |
8181d85f | 7046 | sprintf (p, ",%x", bp_tgt->placed_size); |
96baa820 | 7047 | |
6d820c5c DJ |
7048 | putpkt (rs->buf); |
7049 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 7050 | |
6d820c5c | 7051 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
7052 | { |
7053 | case PACKET_ERROR: | |
7054 | case PACKET_UNKNOWN: | |
7055 | return -1; | |
7056 | case PACKET_OK: | |
7057 | return 0; | |
7058 | } | |
8e65ff28 | 7059 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 7060 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
7061 | } |
7062 | ||
d471ea57 | 7063 | |
802188a7 | 7064 | static int |
a6d9a66e UW |
7065 | remote_remove_hw_breakpoint (struct gdbarch *gdbarch, |
7066 | struct bp_target_info *bp_tgt) | |
96baa820 | 7067 | { |
8181d85f | 7068 | CORE_ADDR addr; |
d01949b6 | 7069 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 7070 | char *p = rs->buf; |
c8189ed1 | 7071 | |
444abaca | 7072 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 7073 | return -1; |
802188a7 | 7074 | |
96baa820 JM |
7075 | *(p++) = 'z'; |
7076 | *(p++) = '1'; | |
7077 | *(p++) = ','; | |
802188a7 | 7078 | |
8181d85f | 7079 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 7080 | p += hexnumstr (p, (ULONGEST) addr); |
8181d85f | 7081 | sprintf (p, ",%x", bp_tgt->placed_size); |
96baa820 | 7082 | |
6d820c5c DJ |
7083 | putpkt (rs->buf); |
7084 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 7085 | |
6d820c5c | 7086 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
7087 | { |
7088 | case PACKET_ERROR: | |
7089 | case PACKET_UNKNOWN: | |
7090 | return -1; | |
7091 | case PACKET_OK: | |
7092 | return 0; | |
7093 | } | |
8e65ff28 | 7094 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 7095 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 7096 | } |
96baa820 | 7097 | |
23860348 | 7098 | /* Table used by the crc32 function to calcuate the checksum. */ |
c906108c | 7099 | |
c5aa993b JM |
7100 | static unsigned long crc32_table[256] = |
7101 | {0, 0}; | |
c906108c SS |
7102 | |
7103 | static unsigned long | |
fba45db2 | 7104 | crc32 (unsigned char *buf, int len, unsigned int crc) |
c906108c | 7105 | { |
c5aa993b | 7106 | if (!crc32_table[1]) |
c906108c | 7107 | { |
23860348 | 7108 | /* Initialize the CRC table and the decoding table. */ |
c906108c SS |
7109 | int i, j; |
7110 | unsigned int c; | |
7111 | ||
7112 | for (i = 0; i < 256; i++) | |
c5aa993b JM |
7113 | { |
7114 | for (c = i << 24, j = 8; j > 0; --j) | |
7115 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
7116 | crc32_table[i] = c; | |
7117 | } | |
c906108c SS |
7118 | } |
7119 | ||
7120 | while (len--) | |
7121 | { | |
7122 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |
7123 | buf++; | |
7124 | } | |
7125 | return crc; | |
7126 | } | |
7127 | ||
7128 | /* compare-sections command | |
7129 | ||
7130 | With no arguments, compares each loadable section in the exec bfd | |
7131 | with the same memory range on the target, and reports mismatches. | |
7132 | Useful for verifying the image on the target against the exec file. | |
7133 | Depends on the target understanding the new "qCRC:" request. */ | |
7134 | ||
e514a9d6 JM |
7135 | /* FIXME: cagney/1999-10-26: This command should be broken down into a |
7136 | target method (target verify memory) and generic version of the | |
7137 | actual command. This will allow other high-level code (especially | |
23860348 | 7138 | generic_load()) to make use of this target functionality. */ |
e514a9d6 | 7139 | |
c906108c | 7140 | static void |
fba45db2 | 7141 | compare_sections_command (char *args, int from_tty) |
c906108c | 7142 | { |
d01949b6 | 7143 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
7144 | asection *s; |
7145 | unsigned long host_crc, target_crc; | |
c906108c | 7146 | struct cleanup *old_chain; |
085dd6e6 JM |
7147 | char *tmp; |
7148 | char *sectdata; | |
ce359b09 | 7149 | const char *sectname; |
c906108c SS |
7150 | bfd_size_type size; |
7151 | bfd_vma lma; | |
7152 | int matched = 0; | |
7153 | int mismatched = 0; | |
7154 | ||
7155 | if (!exec_bfd) | |
8a3fe4f8 | 7156 | error (_("command cannot be used without an exec file")); |
c906108c SS |
7157 | if (!current_target.to_shortname || |
7158 | strcmp (current_target.to_shortname, "remote") != 0) | |
8a3fe4f8 | 7159 | error (_("command can only be used with remote target")); |
c906108c | 7160 | |
c5aa993b | 7161 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
7162 | { |
7163 | if (!(s->flags & SEC_LOAD)) | |
c5aa993b | 7164 | continue; /* skip non-loadable section */ |
c906108c | 7165 | |
2c500098 | 7166 | size = bfd_get_section_size (s); |
c906108c | 7167 | if (size == 0) |
c5aa993b | 7168 | continue; /* skip zero-length section */ |
c906108c | 7169 | |
ce359b09 | 7170 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 7171 | if (args && strcmp (args, sectname) != 0) |
c5aa993b | 7172 | continue; /* not the section selected by user */ |
c906108c | 7173 | |
c5aa993b | 7174 | matched = 1; /* do this section */ |
c906108c | 7175 | lma = s->lma; |
23860348 | 7176 | /* FIXME: assumes lma can fit into long. */ |
ea9c271d | 7177 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", |
ecbc58df | 7178 | (long) lma, (long) size); |
6d820c5c | 7179 | putpkt (rs->buf); |
c906108c | 7180 | |
23860348 MS |
7181 | /* Be clever; compute the host_crc before waiting for target |
7182 | reply. */ | |
c906108c | 7183 | sectdata = xmalloc (size); |
b8c9b27d | 7184 | old_chain = make_cleanup (xfree, sectdata); |
c906108c SS |
7185 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
7186 | host_crc = crc32 ((unsigned char *) sectdata, size, 0xffffffff); | |
7187 | ||
6d820c5c DJ |
7188 | getpkt (&rs->buf, &rs->buf_size, 0); |
7189 | if (rs->buf[0] == 'E') | |
5af949e3 UW |
7190 | error (_("target memory fault, section %s, range %s -- %s"), sectname, |
7191 | paddress (target_gdbarch, lma), | |
7192 | paddress (target_gdbarch, lma + size)); | |
6d820c5c | 7193 | if (rs->buf[0] != 'C') |
8a3fe4f8 | 7194 | error (_("remote target does not support this operation")); |
c906108c | 7195 | |
6d820c5c | 7196 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) |
c906108c SS |
7197 | target_crc = target_crc * 16 + fromhex (*tmp); |
7198 | ||
5af949e3 UW |
7199 | printf_filtered ("Section %s, range %s -- %s: ", sectname, |
7200 | paddress (target_gdbarch, lma), | |
7201 | paddress (target_gdbarch, lma + size)); | |
c906108c SS |
7202 | if (host_crc == target_crc) |
7203 | printf_filtered ("matched.\n"); | |
7204 | else | |
c5aa993b JM |
7205 | { |
7206 | printf_filtered ("MIS-MATCHED!\n"); | |
7207 | mismatched++; | |
7208 | } | |
c906108c SS |
7209 | |
7210 | do_cleanups (old_chain); | |
7211 | } | |
7212 | if (mismatched > 0) | |
8a3fe4f8 AC |
7213 | warning (_("One or more sections of the remote executable does not match\n\ |
7214 | the loaded file\n")); | |
c906108c | 7215 | if (args && !matched) |
a3f17187 | 7216 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
7217 | } |
7218 | ||
0e7f50da UW |
7219 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
7220 | into remote target. The number of bytes written to the remote | |
7221 | target is returned, or -1 for error. */ | |
7222 | ||
7223 | static LONGEST | |
7224 | remote_write_qxfer (struct target_ops *ops, const char *object_name, | |
7225 | const char *annex, const gdb_byte *writebuf, | |
7226 | ULONGEST offset, LONGEST len, | |
7227 | struct packet_config *packet) | |
7228 | { | |
7229 | int i, buf_len; | |
7230 | ULONGEST n; | |
7231 | gdb_byte *wbuf; | |
7232 | struct remote_state *rs = get_remote_state (); | |
7233 | int max_size = get_memory_write_packet_size (); | |
7234 | ||
7235 | if (packet->support == PACKET_DISABLE) | |
7236 | return -1; | |
7237 | ||
7238 | /* Insert header. */ | |
7239 | i = snprintf (rs->buf, max_size, | |
7240 | "qXfer:%s:write:%s:%s:", | |
7241 | object_name, annex ? annex : "", | |
7242 | phex_nz (offset, sizeof offset)); | |
7243 | max_size -= (i + 1); | |
7244 | ||
7245 | /* Escape as much data as fits into rs->buf. */ | |
7246 | buf_len = remote_escape_output | |
7247 | (writebuf, len, (rs->buf + i), &max_size, max_size); | |
7248 | ||
7249 | if (putpkt_binary (rs->buf, i + buf_len) < 0 | |
7250 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
7251 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
7252 | return -1; | |
7253 | ||
7254 | unpack_varlen_hex (rs->buf, &n); | |
7255 | return n; | |
7256 | } | |
7257 | ||
0876f84a DJ |
7258 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
7259 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
7260 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
7261 | The number of bytes read may be less than LEN without indicating an | |
7262 | EOF. PACKET is checked and updated to indicate whether the remote | |
7263 | target supports this object. */ | |
7264 | ||
7265 | static LONGEST | |
7266 | remote_read_qxfer (struct target_ops *ops, const char *object_name, | |
7267 | const char *annex, | |
7268 | gdb_byte *readbuf, ULONGEST offset, LONGEST len, | |
7269 | struct packet_config *packet) | |
7270 | { | |
7271 | static char *finished_object; | |
7272 | static char *finished_annex; | |
7273 | static ULONGEST finished_offset; | |
7274 | ||
7275 | struct remote_state *rs = get_remote_state (); | |
7276 | unsigned int total = 0; | |
7277 | LONGEST i, n, packet_len; | |
7278 | ||
7279 | if (packet->support == PACKET_DISABLE) | |
7280 | return -1; | |
7281 | ||
7282 | /* Check whether we've cached an end-of-object packet that matches | |
7283 | this request. */ | |
7284 | if (finished_object) | |
7285 | { | |
7286 | if (strcmp (object_name, finished_object) == 0 | |
7287 | && strcmp (annex ? annex : "", finished_annex) == 0 | |
7288 | && offset == finished_offset) | |
7289 | return 0; | |
7290 | ||
7291 | /* Otherwise, we're now reading something different. Discard | |
7292 | the cache. */ | |
7293 | xfree (finished_object); | |
7294 | xfree (finished_annex); | |
7295 | finished_object = NULL; | |
7296 | finished_annex = NULL; | |
7297 | } | |
7298 | ||
7299 | /* Request only enough to fit in a single packet. The actual data | |
7300 | may not, since we don't know how much of it will need to be escaped; | |
7301 | the target is free to respond with slightly less data. We subtract | |
7302 | five to account for the response type and the protocol frame. */ | |
7303 | n = min (get_remote_packet_size () - 5, len); | |
7304 | snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s", | |
7305 | object_name, annex ? annex : "", | |
7306 | phex_nz (offset, sizeof offset), | |
7307 | phex_nz (n, sizeof n)); | |
7308 | i = putpkt (rs->buf); | |
7309 | if (i < 0) | |
7310 | return -1; | |
7311 | ||
7312 | rs->buf[0] = '\0'; | |
7313 | packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
7314 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) | |
7315 | return -1; | |
7316 | ||
7317 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
7318 | error (_("Unknown remote qXfer reply: %s"), rs->buf); | |
7319 | ||
7320 | /* 'm' means there is (or at least might be) more data after this | |
7321 | batch. That does not make sense unless there's at least one byte | |
7322 | of data in this reply. */ | |
7323 | if (rs->buf[0] == 'm' && packet_len == 1) | |
7324 | error (_("Remote qXfer reply contained no data.")); | |
7325 | ||
7326 | /* Got some data. */ | |
7327 | i = remote_unescape_input (rs->buf + 1, packet_len - 1, readbuf, n); | |
7328 | ||
7329 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
7330 | or possibly empty. If we have the final block of a non-empty |
7331 | object, record this fact to bypass a subsequent partial read. */ | |
7332 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a DJ |
7333 | { |
7334 | finished_object = xstrdup (object_name); | |
7335 | finished_annex = xstrdup (annex ? annex : ""); | |
7336 | finished_offset = offset + i; | |
7337 | } | |
7338 | ||
7339 | return i; | |
7340 | } | |
7341 | ||
1e3ff5ad | 7342 | static LONGEST |
4b8a223f | 7343 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
961cb7b5 MK |
7344 | const char *annex, gdb_byte *readbuf, |
7345 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
c906108c | 7346 | { |
82f73884 | 7347 | struct remote_state *rs; |
c906108c | 7348 | int i; |
6d820c5c | 7349 | char *p2; |
1e3ff5ad | 7350 | char query_type; |
c906108c | 7351 | |
82f73884 PA |
7352 | set_general_thread (inferior_ptid); |
7353 | ||
7354 | rs = get_remote_state (); | |
7355 | ||
b2182ed2 | 7356 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
7357 | if (object == TARGET_OBJECT_MEMORY) |
7358 | { | |
7359 | int xfered; | |
7360 | errno = 0; | |
7361 | ||
2d717e4f DJ |
7362 | /* If the remote target is connected but not running, we should |
7363 | pass this request down to a lower stratum (e.g. the executable | |
7364 | file). */ | |
7365 | if (!target_has_execution) | |
7366 | return 0; | |
7367 | ||
21e3b9b9 | 7368 | if (writebuf != NULL) |
b2182ed2 | 7369 | xfered = remote_write_bytes (offset, writebuf, len); |
21e3b9b9 | 7370 | else |
b2182ed2 | 7371 | xfered = remote_read_bytes (offset, readbuf, len); |
21e3b9b9 DJ |
7372 | |
7373 | if (xfered > 0) | |
7374 | return xfered; | |
7375 | else if (xfered == 0 && errno == 0) | |
7376 | return 0; | |
7377 | else | |
7378 | return -1; | |
7379 | } | |
7380 | ||
0e7f50da UW |
7381 | /* Handle SPU memory using qxfer packets. */ |
7382 | if (object == TARGET_OBJECT_SPU) | |
7383 | { | |
7384 | if (readbuf) | |
7385 | return remote_read_qxfer (ops, "spu", annex, readbuf, offset, len, | |
7386 | &remote_protocol_packets | |
7387 | [PACKET_qXfer_spu_read]); | |
7388 | else | |
7389 | return remote_write_qxfer (ops, "spu", annex, writebuf, offset, len, | |
7390 | &remote_protocol_packets | |
7391 | [PACKET_qXfer_spu_write]); | |
7392 | } | |
7393 | ||
4aa995e1 PA |
7394 | /* Handle extra signal info using qxfer packets. */ |
7395 | if (object == TARGET_OBJECT_SIGNAL_INFO) | |
7396 | { | |
7397 | if (readbuf) | |
7398 | return remote_read_qxfer (ops, "siginfo", annex, readbuf, offset, len, | |
7399 | &remote_protocol_packets | |
7400 | [PACKET_qXfer_siginfo_read]); | |
7401 | else | |
7402 | return remote_write_qxfer (ops, "siginfo", annex, writebuf, offset, len, | |
7403 | &remote_protocol_packets | |
7404 | [PACKET_qXfer_siginfo_write]); | |
7405 | } | |
7406 | ||
a76d924d DJ |
7407 | /* Only handle flash writes. */ |
7408 | if (writebuf != NULL) | |
7409 | { | |
7410 | LONGEST xfered; | |
7411 | ||
7412 | switch (object) | |
7413 | { | |
7414 | case TARGET_OBJECT_FLASH: | |
7415 | xfered = remote_flash_write (ops, offset, len, writebuf); | |
7416 | ||
7417 | if (xfered > 0) | |
7418 | return xfered; | |
7419 | else if (xfered == 0 && errno == 0) | |
7420 | return 0; | |
7421 | else | |
7422 | return -1; | |
7423 | ||
7424 | default: | |
7425 | return -1; | |
7426 | } | |
7427 | } | |
4b8a223f | 7428 | |
1e3ff5ad AC |
7429 | /* Map pre-existing objects onto letters. DO NOT do this for new |
7430 | objects!!! Instead specify new query packets. */ | |
7431 | switch (object) | |
c906108c | 7432 | { |
1e3ff5ad AC |
7433 | case TARGET_OBJECT_AVR: |
7434 | query_type = 'R'; | |
7435 | break; | |
802188a7 RM |
7436 | |
7437 | case TARGET_OBJECT_AUXV: | |
0876f84a DJ |
7438 | gdb_assert (annex == NULL); |
7439 | return remote_read_qxfer (ops, "auxv", annex, readbuf, offset, len, | |
7440 | &remote_protocol_packets[PACKET_qXfer_auxv]); | |
802188a7 | 7441 | |
23181151 DJ |
7442 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
7443 | return remote_read_qxfer | |
7444 | (ops, "features", annex, readbuf, offset, len, | |
7445 | &remote_protocol_packets[PACKET_qXfer_features]); | |
7446 | ||
cfa9d6d9 DJ |
7447 | case TARGET_OBJECT_LIBRARIES: |
7448 | return remote_read_qxfer | |
7449 | (ops, "libraries", annex, readbuf, offset, len, | |
7450 | &remote_protocol_packets[PACKET_qXfer_libraries]); | |
7451 | ||
fd79ecee DJ |
7452 | case TARGET_OBJECT_MEMORY_MAP: |
7453 | gdb_assert (annex == NULL); | |
7454 | return remote_read_qxfer (ops, "memory-map", annex, readbuf, offset, len, | |
7455 | &remote_protocol_packets[PACKET_qXfer_memory_map]); | |
7456 | ||
07e059b5 VP |
7457 | case TARGET_OBJECT_OSDATA: |
7458 | /* Should only get here if we're connected. */ | |
7459 | gdb_assert (remote_desc); | |
7460 | return remote_read_qxfer | |
7461 | (ops, "osdata", annex, readbuf, offset, len, | |
7462 | &remote_protocol_packets[PACKET_qXfer_osdata]); | |
7463 | ||
1e3ff5ad | 7464 | default: |
c906108c SS |
7465 | return -1; |
7466 | } | |
7467 | ||
4b8a223f | 7468 | /* Note: a zero OFFSET and LEN can be used to query the minimum |
1e3ff5ad | 7469 | buffer size. */ |
4b8a223f | 7470 | if (offset == 0 && len == 0) |
ea9c271d DJ |
7471 | return (get_remote_packet_size ()); |
7472 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not | |
24b06219 | 7473 | large enough let the caller deal with it. */ |
ea9c271d | 7474 | if (len < get_remote_packet_size ()) |
1e3ff5ad | 7475 | return -1; |
ea9c271d | 7476 | len = get_remote_packet_size (); |
1e3ff5ad | 7477 | |
23860348 | 7478 | /* Except for querying the minimum buffer size, target must be open. */ |
c5aa993b | 7479 | if (!remote_desc) |
8a3fe4f8 | 7480 | error (_("remote query is only available after target open")); |
c906108c | 7481 | |
1e3ff5ad | 7482 | gdb_assert (annex != NULL); |
4b8a223f | 7483 | gdb_assert (readbuf != NULL); |
c906108c | 7484 | |
6d820c5c | 7485 | p2 = rs->buf; |
c906108c SS |
7486 | *p2++ = 'q'; |
7487 | *p2++ = query_type; | |
7488 | ||
23860348 MS |
7489 | /* We used one buffer char for the remote protocol q command and |
7490 | another for the query type. As the remote protocol encapsulation | |
7491 | uses 4 chars plus one extra in case we are debugging | |
7492 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
7493 | string. */ | |
c906108c | 7494 | i = 0; |
ea9c271d | 7495 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 7496 | { |
1e3ff5ad AC |
7497 | /* Bad caller may have sent forbidden characters. */ |
7498 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
7499 | *p2++ = annex[i]; | |
c906108c SS |
7500 | i++; |
7501 | } | |
1e3ff5ad AC |
7502 | *p2 = '\0'; |
7503 | gdb_assert (annex[i] == '\0'); | |
c906108c | 7504 | |
6d820c5c | 7505 | i = putpkt (rs->buf); |
c5aa993b JM |
7506 | if (i < 0) |
7507 | return i; | |
c906108c | 7508 | |
6d820c5c DJ |
7509 | getpkt (&rs->buf, &rs->buf_size, 0); |
7510 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 7511 | |
cfd77fa1 | 7512 | return strlen ((char *) readbuf); |
c906108c SS |
7513 | } |
7514 | ||
08388c79 DE |
7515 | static int |
7516 | remote_search_memory (struct target_ops* ops, | |
7517 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
7518 | const gdb_byte *pattern, ULONGEST pattern_len, | |
7519 | CORE_ADDR *found_addrp) | |
7520 | { | |
5af949e3 | 7521 | int addr_size = gdbarch_addr_bit (target_gdbarch) / 8; |
08388c79 DE |
7522 | struct remote_state *rs = get_remote_state (); |
7523 | int max_size = get_memory_write_packet_size (); | |
7524 | struct packet_config *packet = | |
7525 | &remote_protocol_packets[PACKET_qSearch_memory]; | |
7526 | /* number of packet bytes used to encode the pattern, | |
7527 | this could be more than PATTERN_LEN due to escape characters */ | |
7528 | int escaped_pattern_len; | |
7529 | /* amount of pattern that was encodable in the packet */ | |
7530 | int used_pattern_len; | |
7531 | int i; | |
7532 | int found; | |
7533 | ULONGEST found_addr; | |
7534 | ||
7535 | /* Don't go to the target if we don't have to. | |
7536 | This is done before checking packet->support to avoid the possibility that | |
7537 | a success for this edge case means the facility works in general. */ | |
7538 | if (pattern_len > search_space_len) | |
7539 | return 0; | |
7540 | if (pattern_len == 0) | |
7541 | { | |
7542 | *found_addrp = start_addr; | |
7543 | return 1; | |
7544 | } | |
7545 | ||
7546 | /* If we already know the packet isn't supported, fall back to the simple | |
7547 | way of searching memory. */ | |
7548 | ||
7549 | if (packet->support == PACKET_DISABLE) | |
7550 | { | |
7551 | /* Target doesn't provided special support, fall back and use the | |
7552 | standard support (copy memory and do the search here). */ | |
7553 | return simple_search_memory (ops, start_addr, search_space_len, | |
7554 | pattern, pattern_len, found_addrp); | |
7555 | } | |
7556 | ||
7557 | /* Insert header. */ | |
7558 | i = snprintf (rs->buf, max_size, | |
7559 | "qSearch:memory:%s;%s;", | |
5af949e3 | 7560 | phex_nz (start_addr, addr_size), |
08388c79 DE |
7561 | phex_nz (search_space_len, sizeof (search_space_len))); |
7562 | max_size -= (i + 1); | |
7563 | ||
7564 | /* Escape as much data as fits into rs->buf. */ | |
7565 | escaped_pattern_len = | |
7566 | remote_escape_output (pattern, pattern_len, (rs->buf + i), | |
7567 | &used_pattern_len, max_size); | |
7568 | ||
7569 | /* Bail if the pattern is too large. */ | |
7570 | if (used_pattern_len != pattern_len) | |
10e0fa18 | 7571 | error ("Pattern is too large to transmit to remote target."); |
08388c79 DE |
7572 | |
7573 | if (putpkt_binary (rs->buf, i + escaped_pattern_len) < 0 | |
7574 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
7575 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
7576 | { | |
7577 | /* The request may not have worked because the command is not | |
7578 | supported. If so, fall back to the simple way. */ | |
7579 | if (packet->support == PACKET_DISABLE) | |
7580 | { | |
7581 | return simple_search_memory (ops, start_addr, search_space_len, | |
7582 | pattern, pattern_len, found_addrp); | |
7583 | } | |
7584 | return -1; | |
7585 | } | |
7586 | ||
7587 | if (rs->buf[0] == '0') | |
7588 | found = 0; | |
7589 | else if (rs->buf[0] == '1') | |
7590 | { | |
7591 | found = 1; | |
7592 | if (rs->buf[1] != ',') | |
10e0fa18 | 7593 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
7594 | unpack_varlen_hex (rs->buf + 2, &found_addr); |
7595 | *found_addrp = found_addr; | |
7596 | } | |
7597 | else | |
10e0fa18 | 7598 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
7599 | |
7600 | return found; | |
7601 | } | |
7602 | ||
96baa820 JM |
7603 | static void |
7604 | remote_rcmd (char *command, | |
d9fcf2fb | 7605 | struct ui_file *outbuf) |
96baa820 | 7606 | { |
d01949b6 | 7607 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 7608 | char *p = rs->buf; |
96baa820 JM |
7609 | |
7610 | if (!remote_desc) | |
8a3fe4f8 | 7611 | error (_("remote rcmd is only available after target open")); |
96baa820 | 7612 | |
23860348 | 7613 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
7614 | if (command == NULL) |
7615 | command = ""; | |
7616 | ||
23860348 | 7617 | /* The query prefix. */ |
2e9f7625 DJ |
7618 | strcpy (rs->buf, "qRcmd,"); |
7619 | p = strchr (rs->buf, '\0'); | |
96baa820 | 7620 | |
2e9f7625 | 7621 | if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/) > get_remote_packet_size ()) |
8a3fe4f8 | 7622 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 7623 | |
23860348 | 7624 | /* Encode the actual command. */ |
cfd77fa1 | 7625 | bin2hex ((gdb_byte *) command, p, 0); |
96baa820 | 7626 | |
6d820c5c | 7627 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 7628 | error (_("Communication problem with target.")); |
96baa820 JM |
7629 | |
7630 | /* get/display the response */ | |
7631 | while (1) | |
7632 | { | |
2e9f7625 DJ |
7633 | char *buf; |
7634 | ||
23860348 | 7635 | /* XXX - see also tracepoint.c:remote_get_noisy_reply(). */ |
2e9f7625 | 7636 | rs->buf[0] = '\0'; |
6d820c5c | 7637 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 7638 | buf = rs->buf; |
96baa820 | 7639 | if (buf[0] == '\0') |
8a3fe4f8 | 7640 | error (_("Target does not support this command.")); |
96baa820 JM |
7641 | if (buf[0] == 'O' && buf[1] != 'K') |
7642 | { | |
23860348 | 7643 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
7644 | continue; |
7645 | } | |
7646 | if (strcmp (buf, "OK") == 0) | |
7647 | break; | |
7be570e7 JM |
7648 | if (strlen (buf) == 3 && buf[0] == 'E' |
7649 | && isdigit (buf[1]) && isdigit (buf[2])) | |
7650 | { | |
8a3fe4f8 | 7651 | error (_("Protocol error with Rcmd")); |
7be570e7 | 7652 | } |
96baa820 JM |
7653 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
7654 | { | |
7655 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
7656 | fputc_unfiltered (c, outbuf); | |
7657 | } | |
7658 | break; | |
7659 | } | |
7660 | } | |
7661 | ||
fd79ecee DJ |
7662 | static VEC(mem_region_s) * |
7663 | remote_memory_map (struct target_ops *ops) | |
7664 | { | |
7665 | VEC(mem_region_s) *result = NULL; | |
7666 | char *text = target_read_stralloc (¤t_target, | |
7667 | TARGET_OBJECT_MEMORY_MAP, NULL); | |
7668 | ||
7669 | if (text) | |
7670 | { | |
7671 | struct cleanup *back_to = make_cleanup (xfree, text); | |
7672 | result = parse_memory_map (text); | |
7673 | do_cleanups (back_to); | |
7674 | } | |
7675 | ||
7676 | return result; | |
7677 | } | |
7678 | ||
c906108c | 7679 | static void |
fba45db2 | 7680 | packet_command (char *args, int from_tty) |
c906108c | 7681 | { |
d01949b6 | 7682 | struct remote_state *rs = get_remote_state (); |
c906108c | 7683 | |
c5aa993b | 7684 | if (!remote_desc) |
8a3fe4f8 | 7685 | error (_("command can only be used with remote target")); |
c906108c | 7686 | |
c5aa993b | 7687 | if (!args) |
8a3fe4f8 | 7688 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
7689 | |
7690 | puts_filtered ("sending: "); | |
7691 | print_packet (args); | |
7692 | puts_filtered ("\n"); | |
7693 | putpkt (args); | |
7694 | ||
6d820c5c | 7695 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 7696 | puts_filtered ("received: "); |
6d820c5c | 7697 | print_packet (rs->buf); |
c906108c SS |
7698 | puts_filtered ("\n"); |
7699 | } | |
7700 | ||
7701 | #if 0 | |
23860348 | 7702 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 7703 | |
a14ed312 | 7704 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 7705 | |
a14ed312 | 7706 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 7707 | |
a14ed312 | 7708 | static void threadalive_test (char *cmd, int tty); |
c906108c | 7709 | |
a14ed312 | 7710 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 7711 | |
23860348 | 7712 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 7713 | |
a14ed312 | 7714 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 7715 | |
23860348 | 7716 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 7717 | |
a14ed312 | 7718 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 7719 | |
a14ed312 | 7720 | static void init_remote_threadtests (void); |
c906108c | 7721 | |
23860348 | 7722 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
7723 | |
7724 | static void | |
fba45db2 | 7725 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
7726 | { |
7727 | int sample_thread = SAMPLE_THREAD; | |
7728 | ||
a3f17187 | 7729 | printf_filtered (_("Remote threadset test\n")); |
79d7f229 | 7730 | set_general_thread (sample_thread); |
c906108c SS |
7731 | } |
7732 | ||
7733 | ||
7734 | static void | |
fba45db2 | 7735 | threadalive_test (char *cmd, int tty) |
c906108c SS |
7736 | { |
7737 | int sample_thread = SAMPLE_THREAD; | |
79d7f229 PA |
7738 | int pid = ptid_get_pid (inferior_ptid); |
7739 | ptid_t ptid = ptid_build (pid, 0, sample_thread); | |
c906108c | 7740 | |
79d7f229 | 7741 | if (remote_thread_alive (ptid)) |
c906108c SS |
7742 | printf_filtered ("PASS: Thread alive test\n"); |
7743 | else | |
7744 | printf_filtered ("FAIL: Thread alive test\n"); | |
7745 | } | |
7746 | ||
23860348 | 7747 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
7748 | |
7749 | void | |
fba45db2 | 7750 | output_threadid (char *title, threadref *ref) |
c906108c SS |
7751 | { |
7752 | char hexid[20]; | |
7753 | ||
23860348 | 7754 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
7755 | hexid[16] = 0; |
7756 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
7757 | } | |
7758 | ||
7759 | static void | |
fba45db2 | 7760 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
7761 | { |
7762 | int startflag = 1; | |
7763 | threadref nextthread; | |
7764 | int done, result_count; | |
7765 | threadref threadlist[3]; | |
7766 | ||
7767 | printf_filtered ("Remote Threadlist test\n"); | |
7768 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
7769 | &result_count, &threadlist[0])) | |
7770 | printf_filtered ("FAIL: threadlist test\n"); | |
7771 | else | |
7772 | { | |
7773 | threadref *scan = threadlist; | |
7774 | threadref *limit = scan + result_count; | |
7775 | ||
7776 | while (scan < limit) | |
7777 | output_threadid (" thread ", scan++); | |
7778 | } | |
7779 | } | |
7780 | ||
7781 | void | |
fba45db2 | 7782 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
7783 | { |
7784 | output_threadid ("Threadid: ", &info->threadid); | |
7785 | printf_filtered ("Name: %s\n ", info->shortname); | |
7786 | printf_filtered ("State: %s\n", info->display); | |
7787 | printf_filtered ("other: %s\n\n", info->more_display); | |
7788 | } | |
7789 | ||
7790 | int | |
fba45db2 | 7791 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
7792 | { |
7793 | int result; | |
7794 | int set; | |
7795 | struct gdb_ext_thread_info threadinfo; | |
7796 | ||
7797 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
7798 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
7799 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
7800 | display_thread_info (&threadinfo); | |
7801 | return result; | |
7802 | } | |
7803 | ||
7804 | static void | |
fba45db2 | 7805 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
7806 | { |
7807 | int athread = SAMPLE_THREAD; | |
7808 | threadref thread; | |
7809 | int set; | |
7810 | ||
7811 | int_to_threadref (&thread, athread); | |
7812 | printf_filtered ("Remote Threadinfo test\n"); | |
7813 | if (!get_and_display_threadinfo (&thread)) | |
7814 | printf_filtered ("FAIL cannot get thread info\n"); | |
7815 | } | |
7816 | ||
7817 | static int | |
fba45db2 | 7818 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
7819 | { |
7820 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
7821 | return get_and_display_threadinfo (ref); | |
7822 | } | |
7823 | ||
7824 | static void | |
fba45db2 | 7825 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
7826 | { |
7827 | printf_filtered ("Remote Threadlist update test\n"); | |
7828 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
7829 | } | |
7830 | ||
7831 | static void | |
7832 | init_remote_threadtests (void) | |
7833 | { | |
1bedd215 AC |
7834 | add_com ("tlist", class_obscure, threadlist_test_cmd, _("\ |
7835 | Fetch and print the remote list of thread identifiers, one pkt only")); | |
c906108c | 7836 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 7837 | _("Fetch and display info about one thread")); |
c906108c | 7838 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 7839 | _("Test setting to a different thread")); |
c906108c | 7840 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 7841 | _("Iterate through updating all remote thread info")); |
c906108c | 7842 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 7843 | _(" Remote thread alive test ")); |
c906108c SS |
7844 | } |
7845 | ||
7846 | #endif /* 0 */ | |
7847 | ||
f3fb8c85 MS |
7848 | /* Convert a thread ID to a string. Returns the string in a static |
7849 | buffer. */ | |
7850 | ||
7851 | static char * | |
117de6a9 | 7852 | remote_pid_to_str (struct target_ops *ops, ptid_t ptid) |
f3fb8c85 | 7853 | { |
79d7f229 | 7854 | static char buf[64]; |
82f73884 | 7855 | struct remote_state *rs = get_remote_state (); |
f3fb8c85 | 7856 | |
79d7f229 PA |
7857 | if (ptid_equal (magic_null_ptid, ptid)) |
7858 | { | |
7859 | xsnprintf (buf, sizeof buf, "Thread <main>"); | |
7860 | return buf; | |
7861 | } | |
82f73884 PA |
7862 | else if (remote_multi_process_p (rs) |
7863 | && ptid_get_tid (ptid) != 0 && ptid_get_pid (ptid) != 0) | |
7864 | { | |
7865 | xsnprintf (buf, sizeof buf, "Thread %d.%ld", | |
7866 | ptid_get_pid (ptid), ptid_get_tid (ptid)); | |
7867 | return buf; | |
7868 | } | |
79d7f229 PA |
7869 | else if (ptid_get_tid (ptid) != 0) |
7870 | { | |
7871 | xsnprintf (buf, sizeof buf, "Thread %ld", | |
7872 | ptid_get_tid (ptid)); | |
7873 | return buf; | |
7874 | } | |
7875 | ||
7876 | return normal_pid_to_str (ptid); | |
f3fb8c85 MS |
7877 | } |
7878 | ||
38691318 KB |
7879 | /* Get the address of the thread local variable in OBJFILE which is |
7880 | stored at OFFSET within the thread local storage for thread PTID. */ | |
7881 | ||
7882 | static CORE_ADDR | |
117de6a9 PA |
7883 | remote_get_thread_local_address (struct target_ops *ops, |
7884 | ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
38691318 | 7885 | { |
444abaca | 7886 | if (remote_protocol_packets[PACKET_qGetTLSAddr].support != PACKET_DISABLE) |
38691318 KB |
7887 | { |
7888 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 7889 | char *p = rs->buf; |
82f73884 | 7890 | char *endp = rs->buf + get_remote_packet_size (); |
571dd617 | 7891 | enum packet_result result; |
38691318 KB |
7892 | |
7893 | strcpy (p, "qGetTLSAddr:"); | |
7894 | p += strlen (p); | |
82f73884 | 7895 | p = write_ptid (p, endp, ptid); |
38691318 KB |
7896 | *p++ = ','; |
7897 | p += hexnumstr (p, offset); | |
7898 | *p++ = ','; | |
7899 | p += hexnumstr (p, lm); | |
7900 | *p++ = '\0'; | |
7901 | ||
6d820c5c DJ |
7902 | putpkt (rs->buf); |
7903 | getpkt (&rs->buf, &rs->buf_size, 0); | |
7904 | result = packet_ok (rs->buf, &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 7905 | if (result == PACKET_OK) |
38691318 KB |
7906 | { |
7907 | ULONGEST result; | |
7908 | ||
6d820c5c | 7909 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
7910 | return result; |
7911 | } | |
571dd617 | 7912 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
7913 | throw_error (TLS_GENERIC_ERROR, |
7914 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 7915 | else |
109c3e39 AC |
7916 | throw_error (TLS_GENERIC_ERROR, |
7917 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
7918 | } |
7919 | else | |
109c3e39 AC |
7920 | throw_error (TLS_GENERIC_ERROR, |
7921 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
7922 | /* Not reached. */ |
7923 | return 0; | |
7924 | } | |
7925 | ||
29709017 DJ |
7926 | /* Support for inferring a target description based on the current |
7927 | architecture and the size of a 'g' packet. While the 'g' packet | |
7928 | can have any size (since optional registers can be left off the | |
7929 | end), some sizes are easily recognizable given knowledge of the | |
7930 | approximate architecture. */ | |
7931 | ||
7932 | struct remote_g_packet_guess | |
7933 | { | |
7934 | int bytes; | |
7935 | const struct target_desc *tdesc; | |
7936 | }; | |
7937 | typedef struct remote_g_packet_guess remote_g_packet_guess_s; | |
7938 | DEF_VEC_O(remote_g_packet_guess_s); | |
7939 | ||
7940 | struct remote_g_packet_data | |
7941 | { | |
7942 | VEC(remote_g_packet_guess_s) *guesses; | |
7943 | }; | |
7944 | ||
7945 | static struct gdbarch_data *remote_g_packet_data_handle; | |
7946 | ||
7947 | static void * | |
7948 | remote_g_packet_data_init (struct obstack *obstack) | |
7949 | { | |
7950 | return OBSTACK_ZALLOC (obstack, struct remote_g_packet_data); | |
7951 | } | |
7952 | ||
7953 | void | |
7954 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
7955 | const struct target_desc *tdesc) | |
7956 | { | |
7957 | struct remote_g_packet_data *data | |
7958 | = gdbarch_data (gdbarch, remote_g_packet_data_handle); | |
7959 | struct remote_g_packet_guess new_guess, *guess; | |
7960 | int ix; | |
7961 | ||
7962 | gdb_assert (tdesc != NULL); | |
7963 | ||
7964 | for (ix = 0; | |
7965 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
7966 | ix++) | |
7967 | if (guess->bytes == bytes) | |
7968 | internal_error (__FILE__, __LINE__, | |
7969 | "Duplicate g packet description added for size %d", | |
7970 | bytes); | |
7971 | ||
7972 | new_guess.bytes = bytes; | |
7973 | new_guess.tdesc = tdesc; | |
7974 | VEC_safe_push (remote_g_packet_guess_s, data->guesses, &new_guess); | |
7975 | } | |
7976 | ||
d962ef82 DJ |
7977 | /* Return 1 if remote_read_description would do anything on this target |
7978 | and architecture, 0 otherwise. */ | |
7979 | ||
7980 | static int | |
7981 | remote_read_description_p (struct target_ops *target) | |
7982 | { | |
7983 | struct remote_g_packet_data *data | |
7984 | = gdbarch_data (target_gdbarch, remote_g_packet_data_handle); | |
7985 | ||
7986 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) | |
7987 | return 1; | |
7988 | ||
7989 | return 0; | |
7990 | } | |
7991 | ||
29709017 DJ |
7992 | static const struct target_desc * |
7993 | remote_read_description (struct target_ops *target) | |
7994 | { | |
7995 | struct remote_g_packet_data *data | |
1cf3db46 | 7996 | = gdbarch_data (target_gdbarch, remote_g_packet_data_handle); |
29709017 | 7997 | |
d962ef82 DJ |
7998 | /* Do not try this during initial connection, when we do not know |
7999 | whether there is a running but stopped thread. */ | |
8000 | if (!target_has_execution || ptid_equal (inferior_ptid, null_ptid)) | |
8001 | return NULL; | |
8002 | ||
29709017 DJ |
8003 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) |
8004 | { | |
8005 | struct remote_g_packet_guess *guess; | |
8006 | int ix; | |
8007 | int bytes = send_g_packet (); | |
8008 | ||
8009 | for (ix = 0; | |
8010 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
8011 | ix++) | |
8012 | if (guess->bytes == bytes) | |
8013 | return guess->tdesc; | |
8014 | ||
8015 | /* We discard the g packet. A minor optimization would be to | |
8016 | hold on to it, and fill the register cache once we have selected | |
8017 | an architecture, but it's too tricky to do safely. */ | |
8018 | } | |
8019 | ||
8020 | return NULL; | |
8021 | } | |
8022 | ||
a6b151f1 DJ |
8023 | /* Remote file transfer support. This is host-initiated I/O, not |
8024 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
8025 | ||
8026 | /* If *LEFT is at least the length of STRING, copy STRING to | |
8027 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
8028 | decrease *LEFT. Otherwise raise an error. */ | |
8029 | ||
8030 | static void | |
8031 | remote_buffer_add_string (char **buffer, int *left, char *string) | |
8032 | { | |
8033 | int len = strlen (string); | |
8034 | ||
8035 | if (len > *left) | |
8036 | error (_("Packet too long for target.")); | |
8037 | ||
8038 | memcpy (*buffer, string, len); | |
8039 | *buffer += len; | |
8040 | *left -= len; | |
8041 | ||
8042 | /* NUL-terminate the buffer as a convenience, if there is | |
8043 | room. */ | |
8044 | if (*left) | |
8045 | **buffer = '\0'; | |
8046 | } | |
8047 | ||
8048 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
8049 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
8050 | decrease *LEFT. Otherwise raise an error. */ | |
8051 | ||
8052 | static void | |
8053 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
8054 | int len) | |
8055 | { | |
8056 | if (2 * len > *left) | |
8057 | error (_("Packet too long for target.")); | |
8058 | ||
8059 | bin2hex (bytes, *buffer, len); | |
8060 | *buffer += 2 * len; | |
8061 | *left -= 2 * len; | |
8062 | ||
8063 | /* NUL-terminate the buffer as a convenience, if there is | |
8064 | room. */ | |
8065 | if (*left) | |
8066 | **buffer = '\0'; | |
8067 | } | |
8068 | ||
8069 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
8070 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
8071 | decrease *LEFT. Otherwise raise an error. */ | |
8072 | ||
8073 | static void | |
8074 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
8075 | { | |
8076 | int len = hexnumlen (value); | |
8077 | ||
8078 | if (len > *left) | |
8079 | error (_("Packet too long for target.")); | |
8080 | ||
8081 | hexnumstr (*buffer, value); | |
8082 | *buffer += len; | |
8083 | *left -= len; | |
8084 | ||
8085 | /* NUL-terminate the buffer as a convenience, if there is | |
8086 | room. */ | |
8087 | if (*left) | |
8088 | **buffer = '\0'; | |
8089 | } | |
8090 | ||
8091 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
8092 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
8093 | was included, and *ATTACHMENT to point to the start of the annex | |
8094 | if any. The length of the packet isn't needed here; there may | |
8095 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
8096 | ||
8097 | Return 0 if the packet could be parsed, -1 if it could not. If | |
8098 | -1 is returned, the other variables may not be initialized. */ | |
8099 | ||
8100 | static int | |
8101 | remote_hostio_parse_result (char *buffer, int *retcode, | |
8102 | int *remote_errno, char **attachment) | |
8103 | { | |
8104 | char *p, *p2; | |
8105 | ||
8106 | *remote_errno = 0; | |
8107 | *attachment = NULL; | |
8108 | ||
8109 | if (buffer[0] != 'F') | |
8110 | return -1; | |
8111 | ||
8112 | errno = 0; | |
8113 | *retcode = strtol (&buffer[1], &p, 16); | |
8114 | if (errno != 0 || p == &buffer[1]) | |
8115 | return -1; | |
8116 | ||
8117 | /* Check for ",errno". */ | |
8118 | if (*p == ',') | |
8119 | { | |
8120 | errno = 0; | |
8121 | *remote_errno = strtol (p + 1, &p2, 16); | |
8122 | if (errno != 0 || p + 1 == p2) | |
8123 | return -1; | |
8124 | p = p2; | |
8125 | } | |
8126 | ||
8127 | /* Check for ";attachment". If there is no attachment, the | |
8128 | packet should end here. */ | |
8129 | if (*p == ';') | |
8130 | { | |
8131 | *attachment = p + 1; | |
8132 | return 0; | |
8133 | } | |
8134 | else if (*p == '\0') | |
8135 | return 0; | |
8136 | else | |
8137 | return -1; | |
8138 | } | |
8139 | ||
8140 | /* Send a prepared I/O packet to the target and read its response. | |
8141 | The prepared packet is in the global RS->BUF before this function | |
8142 | is called, and the answer is there when we return. | |
8143 | ||
8144 | COMMAND_BYTES is the length of the request to send, which may include | |
8145 | binary data. WHICH_PACKET is the packet configuration to check | |
8146 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
8147 | is set to the error number and -1 is returned. Otherwise the value | |
8148 | returned by the function is returned. | |
8149 | ||
8150 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
8151 | attachment is expected; an error will be reported if there's a | |
8152 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
8153 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
8154 | attachment's length. */ | |
8155 | ||
8156 | static int | |
8157 | remote_hostio_send_command (int command_bytes, int which_packet, | |
8158 | int *remote_errno, char **attachment, | |
8159 | int *attachment_len) | |
8160 | { | |
8161 | struct remote_state *rs = get_remote_state (); | |
8162 | int ret, bytes_read; | |
8163 | char *attachment_tmp; | |
8164 | ||
f1838a98 UW |
8165 | if (!remote_desc |
8166 | || remote_protocol_packets[which_packet].support == PACKET_DISABLE) | |
a6b151f1 DJ |
8167 | { |
8168 | *remote_errno = FILEIO_ENOSYS; | |
8169 | return -1; | |
8170 | } | |
8171 | ||
8172 | putpkt_binary (rs->buf, command_bytes); | |
8173 | bytes_read = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
8174 | ||
8175 | /* If it timed out, something is wrong. Don't try to parse the | |
8176 | buffer. */ | |
8177 | if (bytes_read < 0) | |
8178 | { | |
8179 | *remote_errno = FILEIO_EINVAL; | |
8180 | return -1; | |
8181 | } | |
8182 | ||
8183 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
8184 | { | |
8185 | case PACKET_ERROR: | |
8186 | *remote_errno = FILEIO_EINVAL; | |
8187 | return -1; | |
8188 | case PACKET_UNKNOWN: | |
8189 | *remote_errno = FILEIO_ENOSYS; | |
8190 | return -1; | |
8191 | case PACKET_OK: | |
8192 | break; | |
8193 | } | |
8194 | ||
8195 | if (remote_hostio_parse_result (rs->buf, &ret, remote_errno, | |
8196 | &attachment_tmp)) | |
8197 | { | |
8198 | *remote_errno = FILEIO_EINVAL; | |
8199 | return -1; | |
8200 | } | |
8201 | ||
8202 | /* Make sure we saw an attachment if and only if we expected one. */ | |
8203 | if ((attachment_tmp == NULL && attachment != NULL) | |
8204 | || (attachment_tmp != NULL && attachment == NULL)) | |
8205 | { | |
8206 | *remote_errno = FILEIO_EINVAL; | |
8207 | return -1; | |
8208 | } | |
8209 | ||
8210 | /* If an attachment was found, it must point into the packet buffer; | |
8211 | work out how many bytes there were. */ | |
8212 | if (attachment_tmp != NULL) | |
8213 | { | |
8214 | *attachment = attachment_tmp; | |
8215 | *attachment_len = bytes_read - (*attachment - rs->buf); | |
8216 | } | |
8217 | ||
8218 | return ret; | |
8219 | } | |
8220 | ||
8221 | /* Open FILENAME on the remote target, using FLAGS and MODE. Return a | |
8222 | remote file descriptor, or -1 if an error occurs (and set | |
8223 | *REMOTE_ERRNO). */ | |
8224 | ||
8225 | static int | |
8226 | remote_hostio_open (const char *filename, int flags, int mode, | |
8227 | int *remote_errno) | |
8228 | { | |
8229 | struct remote_state *rs = get_remote_state (); | |
8230 | char *p = rs->buf; | |
8231 | int left = get_remote_packet_size () - 1; | |
8232 | ||
8233 | remote_buffer_add_string (&p, &left, "vFile:open:"); | |
8234 | ||
8235 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
8236 | strlen (filename)); | |
8237 | remote_buffer_add_string (&p, &left, ","); | |
8238 | ||
8239 | remote_buffer_add_int (&p, &left, flags); | |
8240 | remote_buffer_add_string (&p, &left, ","); | |
8241 | ||
8242 | remote_buffer_add_int (&p, &left, mode); | |
8243 | ||
8244 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_open, | |
8245 | remote_errno, NULL, NULL); | |
8246 | } | |
8247 | ||
8248 | /* Write up to LEN bytes from WRITE_BUF to FD on the remote target. | |
8249 | Return the number of bytes written, or -1 if an error occurs (and | |
8250 | set *REMOTE_ERRNO). */ | |
8251 | ||
8252 | static int | |
8253 | remote_hostio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
8254 | ULONGEST offset, int *remote_errno) | |
8255 | { | |
8256 | struct remote_state *rs = get_remote_state (); | |
8257 | char *p = rs->buf; | |
8258 | int left = get_remote_packet_size (); | |
8259 | int out_len; | |
8260 | ||
8261 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); | |
8262 | ||
8263 | remote_buffer_add_int (&p, &left, fd); | |
8264 | remote_buffer_add_string (&p, &left, ","); | |
8265 | ||
8266 | remote_buffer_add_int (&p, &left, offset); | |
8267 | remote_buffer_add_string (&p, &left, ","); | |
8268 | ||
8269 | p += remote_escape_output (write_buf, len, p, &out_len, | |
8270 | get_remote_packet_size () - (p - rs->buf)); | |
8271 | ||
8272 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_pwrite, | |
8273 | remote_errno, NULL, NULL); | |
8274 | } | |
8275 | ||
8276 | /* Read up to LEN bytes FD on the remote target into READ_BUF | |
8277 | Return the number of bytes read, or -1 if an error occurs (and | |
8278 | set *REMOTE_ERRNO). */ | |
8279 | ||
8280 | static int | |
8281 | remote_hostio_pread (int fd, gdb_byte *read_buf, int len, | |
8282 | ULONGEST offset, int *remote_errno) | |
8283 | { | |
8284 | struct remote_state *rs = get_remote_state (); | |
8285 | char *p = rs->buf; | |
8286 | char *attachment; | |
8287 | int left = get_remote_packet_size (); | |
8288 | int ret, attachment_len; | |
8289 | int read_len; | |
8290 | ||
8291 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
8292 | ||
8293 | remote_buffer_add_int (&p, &left, fd); | |
8294 | remote_buffer_add_string (&p, &left, ","); | |
8295 | ||
8296 | remote_buffer_add_int (&p, &left, len); | |
8297 | remote_buffer_add_string (&p, &left, ","); | |
8298 | ||
8299 | remote_buffer_add_int (&p, &left, offset); | |
8300 | ||
8301 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_pread, | |
8302 | remote_errno, &attachment, | |
8303 | &attachment_len); | |
8304 | ||
8305 | if (ret < 0) | |
8306 | return ret; | |
8307 | ||
8308 | read_len = remote_unescape_input (attachment, attachment_len, | |
8309 | read_buf, len); | |
8310 | if (read_len != ret) | |
8311 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
8312 | ||
8313 | return ret; | |
8314 | } | |
8315 | ||
8316 | /* Close FD on the remote target. Return 0, or -1 if an error occurs | |
8317 | (and set *REMOTE_ERRNO). */ | |
8318 | ||
8319 | static int | |
8320 | remote_hostio_close (int fd, int *remote_errno) | |
8321 | { | |
8322 | struct remote_state *rs = get_remote_state (); | |
8323 | char *p = rs->buf; | |
8324 | int left = get_remote_packet_size () - 1; | |
8325 | ||
8326 | remote_buffer_add_string (&p, &left, "vFile:close:"); | |
8327 | ||
8328 | remote_buffer_add_int (&p, &left, fd); | |
8329 | ||
8330 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_close, | |
8331 | remote_errno, NULL, NULL); | |
8332 | } | |
8333 | ||
8334 | /* Unlink FILENAME on the remote target. Return 0, or -1 if an error | |
8335 | occurs (and set *REMOTE_ERRNO). */ | |
8336 | ||
8337 | static int | |
8338 | remote_hostio_unlink (const char *filename, int *remote_errno) | |
8339 | { | |
8340 | struct remote_state *rs = get_remote_state (); | |
8341 | char *p = rs->buf; | |
8342 | int left = get_remote_packet_size () - 1; | |
8343 | ||
8344 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); | |
8345 | ||
8346 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
8347 | strlen (filename)); | |
8348 | ||
8349 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_unlink, | |
8350 | remote_errno, NULL, NULL); | |
8351 | } | |
8352 | ||
8353 | static int | |
8354 | remote_fileio_errno_to_host (int errnum) | |
8355 | { | |
8356 | switch (errnum) | |
8357 | { | |
8358 | case FILEIO_EPERM: | |
8359 | return EPERM; | |
8360 | case FILEIO_ENOENT: | |
8361 | return ENOENT; | |
8362 | case FILEIO_EINTR: | |
8363 | return EINTR; | |
8364 | case FILEIO_EIO: | |
8365 | return EIO; | |
8366 | case FILEIO_EBADF: | |
8367 | return EBADF; | |
8368 | case FILEIO_EACCES: | |
8369 | return EACCES; | |
8370 | case FILEIO_EFAULT: | |
8371 | return EFAULT; | |
8372 | case FILEIO_EBUSY: | |
8373 | return EBUSY; | |
8374 | case FILEIO_EEXIST: | |
8375 | return EEXIST; | |
8376 | case FILEIO_ENODEV: | |
8377 | return ENODEV; | |
8378 | case FILEIO_ENOTDIR: | |
8379 | return ENOTDIR; | |
8380 | case FILEIO_EISDIR: | |
8381 | return EISDIR; | |
8382 | case FILEIO_EINVAL: | |
8383 | return EINVAL; | |
8384 | case FILEIO_ENFILE: | |
8385 | return ENFILE; | |
8386 | case FILEIO_EMFILE: | |
8387 | return EMFILE; | |
8388 | case FILEIO_EFBIG: | |
8389 | return EFBIG; | |
8390 | case FILEIO_ENOSPC: | |
8391 | return ENOSPC; | |
8392 | case FILEIO_ESPIPE: | |
8393 | return ESPIPE; | |
8394 | case FILEIO_EROFS: | |
8395 | return EROFS; | |
8396 | case FILEIO_ENOSYS: | |
8397 | return ENOSYS; | |
8398 | case FILEIO_ENAMETOOLONG: | |
8399 | return ENAMETOOLONG; | |
8400 | } | |
8401 | return -1; | |
8402 | } | |
8403 | ||
8404 | static char * | |
8405 | remote_hostio_error (int errnum) | |
8406 | { | |
8407 | int host_error = remote_fileio_errno_to_host (errnum); | |
8408 | ||
8409 | if (host_error == -1) | |
8410 | error (_("Unknown remote I/O error %d"), errnum); | |
8411 | else | |
8412 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
8413 | } | |
8414 | ||
a6b151f1 DJ |
8415 | static void |
8416 | remote_hostio_close_cleanup (void *opaque) | |
8417 | { | |
8418 | int fd = *(int *) opaque; | |
8419 | int remote_errno; | |
8420 | ||
8421 | remote_hostio_close (fd, &remote_errno); | |
8422 | } | |
8423 | ||
f1838a98 UW |
8424 | |
8425 | static void * | |
8426 | remote_bfd_iovec_open (struct bfd *abfd, void *open_closure) | |
8427 | { | |
8428 | const char *filename = bfd_get_filename (abfd); | |
8429 | int fd, remote_errno; | |
8430 | int *stream; | |
8431 | ||
8432 | gdb_assert (remote_filename_p (filename)); | |
8433 | ||
8434 | fd = remote_hostio_open (filename + 7, FILEIO_O_RDONLY, 0, &remote_errno); | |
8435 | if (fd == -1) | |
8436 | { | |
8437 | errno = remote_fileio_errno_to_host (remote_errno); | |
8438 | bfd_set_error (bfd_error_system_call); | |
8439 | return NULL; | |
8440 | } | |
8441 | ||
8442 | stream = xmalloc (sizeof (int)); | |
8443 | *stream = fd; | |
8444 | return stream; | |
8445 | } | |
8446 | ||
8447 | static int | |
8448 | remote_bfd_iovec_close (struct bfd *abfd, void *stream) | |
8449 | { | |
8450 | int fd = *(int *)stream; | |
8451 | int remote_errno; | |
8452 | ||
8453 | xfree (stream); | |
8454 | ||
8455 | /* Ignore errors on close; these may happen if the remote | |
8456 | connection was already torn down. */ | |
8457 | remote_hostio_close (fd, &remote_errno); | |
8458 | ||
8459 | return 1; | |
8460 | } | |
8461 | ||
8462 | static file_ptr | |
8463 | remote_bfd_iovec_pread (struct bfd *abfd, void *stream, void *buf, | |
8464 | file_ptr nbytes, file_ptr offset) | |
8465 | { | |
8466 | int fd = *(int *)stream; | |
8467 | int remote_errno; | |
8468 | file_ptr pos, bytes; | |
8469 | ||
8470 | pos = 0; | |
8471 | while (nbytes > pos) | |
8472 | { | |
8473 | bytes = remote_hostio_pread (fd, (char *)buf + pos, nbytes - pos, | |
8474 | offset + pos, &remote_errno); | |
8475 | if (bytes == 0) | |
8476 | /* Success, but no bytes, means end-of-file. */ | |
8477 | break; | |
8478 | if (bytes == -1) | |
8479 | { | |
8480 | errno = remote_fileio_errno_to_host (remote_errno); | |
8481 | bfd_set_error (bfd_error_system_call); | |
8482 | return -1; | |
8483 | } | |
8484 | ||
8485 | pos += bytes; | |
8486 | } | |
8487 | ||
8488 | return pos; | |
8489 | } | |
8490 | ||
8491 | static int | |
8492 | remote_bfd_iovec_stat (struct bfd *abfd, void *stream, struct stat *sb) | |
8493 | { | |
8494 | /* FIXME: We should probably implement remote_hostio_stat. */ | |
8495 | sb->st_size = INT_MAX; | |
8496 | return 0; | |
8497 | } | |
8498 | ||
8499 | int | |
8500 | remote_filename_p (const char *filename) | |
8501 | { | |
8502 | return strncmp (filename, "remote:", 7) == 0; | |
8503 | } | |
8504 | ||
8505 | bfd * | |
8506 | remote_bfd_open (const char *remote_file, const char *target) | |
8507 | { | |
8508 | return bfd_openr_iovec (remote_file, target, | |
8509 | remote_bfd_iovec_open, NULL, | |
8510 | remote_bfd_iovec_pread, | |
8511 | remote_bfd_iovec_close, | |
8512 | remote_bfd_iovec_stat); | |
8513 | } | |
8514 | ||
a6b151f1 DJ |
8515 | void |
8516 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
8517 | { | |
8518 | struct cleanup *back_to, *close_cleanup; | |
8519 | int retcode, fd, remote_errno, bytes, io_size; | |
8520 | FILE *file; | |
8521 | gdb_byte *buffer; | |
8522 | int bytes_in_buffer; | |
8523 | int saw_eof; | |
8524 | ULONGEST offset; | |
8525 | ||
8526 | if (!remote_desc) | |
8527 | error (_("command can only be used with remote target")); | |
8528 | ||
8529 | file = fopen (local_file, "rb"); | |
8530 | if (file == NULL) | |
8531 | perror_with_name (local_file); | |
7c8a8b04 | 8532 | back_to = make_cleanup_fclose (file); |
a6b151f1 DJ |
8533 | |
8534 | fd = remote_hostio_open (remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT | |
8535 | | FILEIO_O_TRUNC), | |
8536 | 0700, &remote_errno); | |
8537 | if (fd == -1) | |
8538 | remote_hostio_error (remote_errno); | |
8539 | ||
8540 | /* Send up to this many bytes at once. They won't all fit in the | |
8541 | remote packet limit, so we'll transfer slightly fewer. */ | |
8542 | io_size = get_remote_packet_size (); | |
8543 | buffer = xmalloc (io_size); | |
8544 | make_cleanup (xfree, buffer); | |
8545 | ||
8546 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
8547 | ||
8548 | bytes_in_buffer = 0; | |
8549 | saw_eof = 0; | |
8550 | offset = 0; | |
8551 | while (bytes_in_buffer || !saw_eof) | |
8552 | { | |
8553 | if (!saw_eof) | |
8554 | { | |
8555 | bytes = fread (buffer + bytes_in_buffer, 1, io_size - bytes_in_buffer, | |
8556 | file); | |
8557 | if (bytes == 0) | |
8558 | { | |
8559 | if (ferror (file)) | |
8560 | error (_("Error reading %s."), local_file); | |
8561 | else | |
8562 | { | |
8563 | /* EOF. Unless there is something still in the | |
8564 | buffer from the last iteration, we are done. */ | |
8565 | saw_eof = 1; | |
8566 | if (bytes_in_buffer == 0) | |
8567 | break; | |
8568 | } | |
8569 | } | |
8570 | } | |
8571 | else | |
8572 | bytes = 0; | |
8573 | ||
8574 | bytes += bytes_in_buffer; | |
8575 | bytes_in_buffer = 0; | |
8576 | ||
8577 | retcode = remote_hostio_pwrite (fd, buffer, bytes, offset, &remote_errno); | |
8578 | ||
8579 | if (retcode < 0) | |
8580 | remote_hostio_error (remote_errno); | |
8581 | else if (retcode == 0) | |
8582 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
8583 | else if (retcode < bytes) | |
8584 | { | |
8585 | /* Short write. Save the rest of the read data for the next | |
8586 | write. */ | |
8587 | bytes_in_buffer = bytes - retcode; | |
8588 | memmove (buffer, buffer + retcode, bytes_in_buffer); | |
8589 | } | |
8590 | ||
8591 | offset += retcode; | |
8592 | } | |
8593 | ||
8594 | discard_cleanups (close_cleanup); | |
8595 | if (remote_hostio_close (fd, &remote_errno)) | |
8596 | remote_hostio_error (remote_errno); | |
8597 | ||
8598 | if (from_tty) | |
8599 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
8600 | do_cleanups (back_to); | |
8601 | } | |
8602 | ||
8603 | void | |
8604 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
8605 | { | |
8606 | struct cleanup *back_to, *close_cleanup; | |
8607 | int retcode, fd, remote_errno, bytes, io_size; | |
8608 | FILE *file; | |
8609 | gdb_byte *buffer; | |
8610 | ULONGEST offset; | |
8611 | ||
8612 | if (!remote_desc) | |
8613 | error (_("command can only be used with remote target")); | |
8614 | ||
8615 | fd = remote_hostio_open (remote_file, FILEIO_O_RDONLY, 0, &remote_errno); | |
8616 | if (fd == -1) | |
8617 | remote_hostio_error (remote_errno); | |
8618 | ||
8619 | file = fopen (local_file, "wb"); | |
8620 | if (file == NULL) | |
8621 | perror_with_name (local_file); | |
7c8a8b04 | 8622 | back_to = make_cleanup_fclose (file); |
a6b151f1 DJ |
8623 | |
8624 | /* Send up to this many bytes at once. They won't all fit in the | |
8625 | remote packet limit, so we'll transfer slightly fewer. */ | |
8626 | io_size = get_remote_packet_size (); | |
8627 | buffer = xmalloc (io_size); | |
8628 | make_cleanup (xfree, buffer); | |
8629 | ||
8630 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
8631 | ||
8632 | offset = 0; | |
8633 | while (1) | |
8634 | { | |
8635 | bytes = remote_hostio_pread (fd, buffer, io_size, offset, &remote_errno); | |
8636 | if (bytes == 0) | |
8637 | /* Success, but no bytes, means end-of-file. */ | |
8638 | break; | |
8639 | if (bytes == -1) | |
8640 | remote_hostio_error (remote_errno); | |
8641 | ||
8642 | offset += bytes; | |
8643 | ||
8644 | bytes = fwrite (buffer, 1, bytes, file); | |
8645 | if (bytes == 0) | |
8646 | perror_with_name (local_file); | |
8647 | } | |
8648 | ||
8649 | discard_cleanups (close_cleanup); | |
8650 | if (remote_hostio_close (fd, &remote_errno)) | |
8651 | remote_hostio_error (remote_errno); | |
8652 | ||
8653 | if (from_tty) | |
8654 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
8655 | do_cleanups (back_to); | |
8656 | } | |
8657 | ||
8658 | void | |
8659 | remote_file_delete (const char *remote_file, int from_tty) | |
8660 | { | |
8661 | int retcode, remote_errno; | |
8662 | ||
8663 | if (!remote_desc) | |
8664 | error (_("command can only be used with remote target")); | |
8665 | ||
8666 | retcode = remote_hostio_unlink (remote_file, &remote_errno); | |
8667 | if (retcode == -1) | |
8668 | remote_hostio_error (remote_errno); | |
8669 | ||
8670 | if (from_tty) | |
8671 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
8672 | } | |
8673 | ||
8674 | static void | |
8675 | remote_put_command (char *args, int from_tty) | |
8676 | { | |
8677 | struct cleanup *back_to; | |
8678 | char **argv; | |
8679 | ||
d1a41061 PP |
8680 | if (args == NULL) |
8681 | error_no_arg (_("file to put")); | |
8682 | ||
8683 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
8684 | back_to = make_cleanup_freeargv (argv); |
8685 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
8686 | error (_("Invalid parameters to remote put")); | |
8687 | ||
8688 | remote_file_put (argv[0], argv[1], from_tty); | |
8689 | ||
8690 | do_cleanups (back_to); | |
8691 | } | |
8692 | ||
8693 | static void | |
8694 | remote_get_command (char *args, int from_tty) | |
8695 | { | |
8696 | struct cleanup *back_to; | |
8697 | char **argv; | |
8698 | ||
d1a41061 PP |
8699 | if (args == NULL) |
8700 | error_no_arg (_("file to get")); | |
8701 | ||
8702 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
8703 | back_to = make_cleanup_freeargv (argv); |
8704 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
8705 | error (_("Invalid parameters to remote get")); | |
8706 | ||
8707 | remote_file_get (argv[0], argv[1], from_tty); | |
8708 | ||
8709 | do_cleanups (back_to); | |
8710 | } | |
8711 | ||
8712 | static void | |
8713 | remote_delete_command (char *args, int from_tty) | |
8714 | { | |
8715 | struct cleanup *back_to; | |
8716 | char **argv; | |
8717 | ||
d1a41061 PP |
8718 | if (args == NULL) |
8719 | error_no_arg (_("file to delete")); | |
8720 | ||
8721 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
8722 | back_to = make_cleanup_freeargv (argv); |
8723 | if (argv[0] == NULL || argv[1] != NULL) | |
8724 | error (_("Invalid parameters to remote delete")); | |
8725 | ||
8726 | remote_file_delete (argv[0], from_tty); | |
8727 | ||
8728 | do_cleanups (back_to); | |
8729 | } | |
8730 | ||
8731 | static void | |
8732 | remote_command (char *args, int from_tty) | |
8733 | { | |
8734 | help_list (remote_cmdlist, "remote ", -1, gdb_stdout); | |
8735 | } | |
8736 | ||
b2175913 MS |
8737 | static int remote_target_can_reverse = 1; |
8738 | ||
8739 | static int | |
8740 | remote_can_execute_reverse (void) | |
8741 | { | |
8742 | return remote_target_can_reverse; | |
8743 | } | |
8744 | ||
74531fed PA |
8745 | static int |
8746 | remote_supports_non_stop (void) | |
8747 | { | |
8748 | return 1; | |
8749 | } | |
8750 | ||
8a305172 PA |
8751 | static int |
8752 | remote_supports_multi_process (void) | |
8753 | { | |
8754 | struct remote_state *rs = get_remote_state (); | |
8755 | return remote_multi_process_p (rs); | |
8756 | } | |
8757 | ||
782b2b07 SS |
8758 | int |
8759 | remote_supports_cond_tracepoints (void) | |
8760 | { | |
8761 | struct remote_state *rs = get_remote_state (); | |
8762 | return rs->cond_tracepoints; | |
8763 | } | |
8764 | ||
c906108c | 8765 | static void |
fba45db2 | 8766 | init_remote_ops (void) |
c906108c | 8767 | { |
c5aa993b | 8768 | remote_ops.to_shortname = "remote"; |
c906108c | 8769 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 8770 | remote_ops.to_doc = |
c906108c | 8771 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
8772 | Specify the serial device it is connected to\n\ |
8773 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
8774 | remote_ops.to_open = remote_open; |
8775 | remote_ops.to_close = remote_close; | |
c906108c | 8776 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 8777 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 8778 | remote_ops.to_resume = remote_resume; |
c906108c SS |
8779 | remote_ops.to_wait = remote_wait; |
8780 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
8781 | remote_ops.to_store_registers = remote_store_registers; | |
8782 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 8783 | remote_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 8784 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
8785 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
8786 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
8787 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
8788 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
8789 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; | |
8790 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
8791 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
8792 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
8793 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b JM |
8794 | remote_ops.to_kill = remote_kill; |
8795 | remote_ops.to_load = generic_load; | |
c906108c SS |
8796 | remote_ops.to_mourn_inferior = remote_mourn; |
8797 | remote_ops.to_thread_alive = remote_thread_alive; | |
0f71a2f6 | 8798 | remote_ops.to_find_new_threads = remote_threads_info; |
0caabb7e | 8799 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 8800 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
c906108c | 8801 | remote_ops.to_stop = remote_stop; |
4b8a223f | 8802 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 8803 | remote_ops.to_rcmd = remote_rcmd; |
49d03eab | 8804 | remote_ops.to_log_command = serial_log_command; |
38691318 | 8805 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; |
c906108c | 8806 | remote_ops.to_stratum = process_stratum; |
c35b1492 PA |
8807 | remote_ops.to_has_all_memory = default_child_has_all_memory; |
8808 | remote_ops.to_has_memory = default_child_has_memory; | |
8809 | remote_ops.to_has_stack = default_child_has_stack; | |
8810 | remote_ops.to_has_registers = default_child_has_registers; | |
8811 | remote_ops.to_has_execution = default_child_has_execution; | |
c5aa993b | 8812 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ |
b2175913 | 8813 | remote_ops.to_can_execute_reverse = remote_can_execute_reverse; |
c5aa993b | 8814 | remote_ops.to_magic = OPS_MAGIC; |
fd79ecee | 8815 | remote_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
8816 | remote_ops.to_flash_erase = remote_flash_erase; |
8817 | remote_ops.to_flash_done = remote_flash_done; | |
29709017 | 8818 | remote_ops.to_read_description = remote_read_description; |
08388c79 | 8819 | remote_ops.to_search_memory = remote_search_memory; |
75c99385 PA |
8820 | remote_ops.to_can_async_p = remote_can_async_p; |
8821 | remote_ops.to_is_async_p = remote_is_async_p; | |
8822 | remote_ops.to_async = remote_async; | |
8823 | remote_ops.to_async_mask = remote_async_mask; | |
8824 | remote_ops.to_terminal_inferior = remote_terminal_inferior; | |
8825 | remote_ops.to_terminal_ours = remote_terminal_ours; | |
74531fed | 8826 | remote_ops.to_supports_non_stop = remote_supports_non_stop; |
8a305172 | 8827 | remote_ops.to_supports_multi_process = remote_supports_multi_process; |
c906108c SS |
8828 | } |
8829 | ||
8830 | /* Set up the extended remote vector by making a copy of the standard | |
8831 | remote vector and adding to it. */ | |
8832 | ||
8833 | static void | |
fba45db2 | 8834 | init_extended_remote_ops (void) |
c906108c SS |
8835 | { |
8836 | extended_remote_ops = remote_ops; | |
8837 | ||
0f71a2f6 | 8838 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 8839 | extended_remote_ops.to_longname = |
c906108c | 8840 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 8841 | extended_remote_ops.to_doc = |
c906108c | 8842 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
39237dd1 PA |
8843 | Specify the serial device it is connected to (e.g. /dev/ttya)."; |
8844 | extended_remote_ops.to_open = extended_remote_open; | |
c906108c SS |
8845 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
8846 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
2d717e4f DJ |
8847 | extended_remote_ops.to_detach = extended_remote_detach; |
8848 | extended_remote_ops.to_attach = extended_remote_attach; | |
82f73884 | 8849 | extended_remote_ops.to_kill = extended_remote_kill; |
0f71a2f6 JM |
8850 | } |
8851 | ||
6426a772 JM |
8852 | static int |
8853 | remote_can_async_p (void) | |
8854 | { | |
c6ebd6cf | 8855 | if (!target_async_permitted) |
75c99385 PA |
8856 | /* We only enable async when the user specifically asks for it. */ |
8857 | return 0; | |
8858 | ||
23860348 | 8859 | /* We're async whenever the serial device is. */ |
b84876c2 | 8860 | return remote_async_mask_value && serial_can_async_p (remote_desc); |
6426a772 JM |
8861 | } |
8862 | ||
8863 | static int | |
8864 | remote_is_async_p (void) | |
8865 | { | |
c6ebd6cf | 8866 | if (!target_async_permitted) |
75c99385 PA |
8867 | /* We only enable async when the user specifically asks for it. */ |
8868 | return 0; | |
8869 | ||
23860348 | 8870 | /* We're async whenever the serial device is. */ |
b84876c2 | 8871 | return remote_async_mask_value && serial_is_async_p (remote_desc); |
6426a772 JM |
8872 | } |
8873 | ||
2acceee2 JM |
8874 | /* Pass the SERIAL event on and up to the client. One day this code |
8875 | will be able to delay notifying the client of an event until the | |
23860348 | 8876 | point where an entire packet has been received. */ |
2acceee2 | 8877 | |
2bc416ba | 8878 | static void (*async_client_callback) (enum inferior_event_type event_type, |
23860348 | 8879 | void *context); |
2acceee2 JM |
8880 | static void *async_client_context; |
8881 | static serial_event_ftype remote_async_serial_handler; | |
8882 | ||
6426a772 | 8883 | static void |
819cc324 | 8884 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 8885 | { |
2acceee2 JM |
8886 | /* Don't propogate error information up to the client. Instead let |
8887 | the client find out about the error by querying the target. */ | |
8888 | async_client_callback (INF_REG_EVENT, async_client_context); | |
8889 | } | |
8890 | ||
74531fed PA |
8891 | static void |
8892 | remote_async_inferior_event_handler (gdb_client_data data) | |
8893 | { | |
8894 | inferior_event_handler (INF_REG_EVENT, NULL); | |
8895 | } | |
8896 | ||
8897 | static void | |
8898 | remote_async_get_pending_events_handler (gdb_client_data data) | |
8899 | { | |
8900 | remote_get_pending_stop_replies (); | |
8901 | } | |
8902 | ||
2acceee2 | 8903 | static void |
2bc416ba | 8904 | remote_async (void (*callback) (enum inferior_event_type event_type, |
23860348 | 8905 | void *context), void *context) |
2acceee2 | 8906 | { |
b84876c2 | 8907 | if (remote_async_mask_value == 0) |
8e65ff28 | 8908 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8909 | _("Calling remote_async when async is masked")); |
ed9a39eb | 8910 | |
2acceee2 JM |
8911 | if (callback != NULL) |
8912 | { | |
2cd58942 | 8913 | serial_async (remote_desc, remote_async_serial_handler, NULL); |
2acceee2 JM |
8914 | async_client_callback = callback; |
8915 | async_client_context = context; | |
8916 | } | |
8917 | else | |
2cd58942 | 8918 | serial_async (remote_desc, NULL, NULL); |
6426a772 JM |
8919 | } |
8920 | ||
b84876c2 PA |
8921 | static int |
8922 | remote_async_mask (int new_mask) | |
8923 | { | |
8924 | int curr_mask = remote_async_mask_value; | |
8925 | remote_async_mask_value = new_mask; | |
8926 | return curr_mask; | |
8927 | } | |
8928 | ||
5a2468f5 | 8929 | static void |
c2d11a7d | 8930 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 8931 | { |
427c3a89 | 8932 | help_list (remote_set_cmdlist, "set remote ", -1, gdb_stdout); |
5a2468f5 JM |
8933 | } |
8934 | ||
d471ea57 AC |
8935 | static void |
8936 | show_remote_cmd (char *args, int from_tty) | |
8937 | { | |
37a105a1 | 8938 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 8939 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 DJ |
8940 | struct cleanup *showlist_chain; |
8941 | struct cmd_list_element *list = remote_show_cmdlist; | |
8942 | ||
8943 | showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist"); | |
8944 | for (; list != NULL; list = list->next) | |
8945 | if (strcmp (list->name, "Z-packet") == 0) | |
8946 | continue; | |
427c3a89 DJ |
8947 | else if (list->type == not_set_cmd) |
8948 | /* Alias commands are exactly like the original, except they | |
8949 | don't have the normal type. */ | |
8950 | continue; | |
8951 | else | |
37a105a1 DJ |
8952 | { |
8953 | struct cleanup *option_chain | |
8954 | = make_cleanup_ui_out_tuple_begin_end (uiout, "option"); | |
8955 | ui_out_field_string (uiout, "name", list->name); | |
8956 | ui_out_text (uiout, ": "); | |
427c3a89 DJ |
8957 | if (list->type == show_cmd) |
8958 | do_setshow_command ((char *) NULL, from_tty, list); | |
8959 | else | |
8960 | cmd_func (list, NULL, from_tty); | |
37a105a1 DJ |
8961 | /* Close the tuple. */ |
8962 | do_cleanups (option_chain); | |
8963 | } | |
427c3a89 DJ |
8964 | |
8965 | /* Close the tuple. */ | |
8966 | do_cleanups (showlist_chain); | |
d471ea57 | 8967 | } |
5a2468f5 | 8968 | |
0f71a2f6 | 8969 | |
23860348 | 8970 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
8971 | static void |
8972 | remote_new_objfile (struct objfile *objfile) | |
8973 | { | |
23860348 | 8974 | if (remote_desc != 0) /* Have a remote connection. */ |
06d3b283 | 8975 | remote_check_symbols (objfile); |
dc8acb97 MS |
8976 | } |
8977 | ||
c906108c | 8978 | void |
fba45db2 | 8979 | _initialize_remote (void) |
c906108c | 8980 | { |
ea9c271d DJ |
8981 | struct remote_state *rs; |
8982 | ||
0f71a2f6 | 8983 | /* architecture specific data */ |
2bc416ba | 8984 | remote_gdbarch_data_handle = |
23860348 | 8985 | gdbarch_data_register_post_init (init_remote_state); |
29709017 DJ |
8986 | remote_g_packet_data_handle = |
8987 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 8988 | |
ea9c271d DJ |
8989 | /* Initialize the per-target state. At the moment there is only one |
8990 | of these, not one per target. Only one target is active at a | |
8991 | time. The default buffer size is unimportant; it will be expanded | |
8992 | whenever a larger buffer is needed. */ | |
0b83947e | 8993 | rs = get_remote_state_raw (); |
ea9c271d DJ |
8994 | rs->buf_size = 400; |
8995 | rs->buf = xmalloc (rs->buf_size); | |
8996 | ||
c906108c SS |
8997 | init_remote_ops (); |
8998 | add_target (&remote_ops); | |
8999 | ||
9000 | init_extended_remote_ops (); | |
9001 | add_target (&extended_remote_ops); | |
cce74817 | 9002 | |
dc8acb97 | 9003 | /* Hook into new objfile notification. */ |
06d3b283 | 9004 | observer_attach_new_objfile (remote_new_objfile); |
dc8acb97 | 9005 | |
b803fb0f DJ |
9006 | /* Set up signal handlers. */ |
9007 | sigint_remote_token = | |
9008 | create_async_signal_handler (async_remote_interrupt, NULL); | |
9009 | sigint_remote_twice_token = | |
9010 | create_async_signal_handler (inferior_event_handler_wrapper, NULL); | |
9011 | ||
c906108c SS |
9012 | #if 0 |
9013 | init_remote_threadtests (); | |
9014 | #endif | |
9015 | ||
23860348 | 9016 | /* set/show remote ... */ |
d471ea57 | 9017 | |
1bedd215 | 9018 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
9019 | Remote protocol specific variables\n\ |
9020 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 9021 | the packets being used"), |
cff3e48b | 9022 | &remote_set_cmdlist, "set remote ", |
23860348 | 9023 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 9024 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
9025 | Remote protocol specific variables\n\ |
9026 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 9027 | the packets being used"), |
cff3e48b | 9028 | &remote_show_cmdlist, "show remote ", |
23860348 | 9029 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 9030 | |
1a966eab AC |
9031 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
9032 | Compare section data on target to the exec file.\n\ | |
9033 | Argument is a single section name (default: all loaded sections)."), | |
c906108c SS |
9034 | &cmdlist); |
9035 | ||
1a966eab AC |
9036 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
9037 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
9038 | maintenance packet TEXT\n\ |
9039 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
9040 | this command sends the string TEXT to the inferior, and displays the\n\ | |
9041 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 9042 | terminating `#' character and checksum."), |
c906108c SS |
9043 | &maintenancelist); |
9044 | ||
7915a72c AC |
9045 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
9046 | Set whether to send break if interrupted."), _("\ | |
9047 | Show whether to send break if interrupted."), _("\ | |
9048 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
2c5b56ce | 9049 | NULL, NULL, /* FIXME: i18n: Whether to send break if interrupted is %s. */ |
e707bbc2 | 9050 | &setlist, &showlist); |
c906108c | 9051 | |
23860348 | 9052 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 9053 | |
1a966eab AC |
9054 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
9055 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 9056 | &setlist); |
1a966eab AC |
9057 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
9058 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
9059 | &showlist); |
9060 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
9061 | set_memory_write_packet_size, _("\ |
9062 | Set the maximum number of bytes per memory-write packet.\n\ | |
9063 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
9064 | default packet size. The actual limit is further reduced\n\ | |
9065 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
9066 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
9067 | &remote_set_cmdlist); |
9068 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
9069 | set_memory_read_packet_size, _("\ |
9070 | Set the maximum number of bytes per memory-read packet.\n\ | |
9071 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
9072 | default packet size. The actual limit is further reduced\n\ | |
9073 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
9074 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
9075 | &remote_set_cmdlist); |
9076 | add_cmd ("memory-write-packet-size", no_class, | |
9077 | show_memory_write_packet_size, | |
1a966eab | 9078 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
9079 | &remote_show_cmdlist); |
9080 | add_cmd ("memory-read-packet-size", no_class, | |
9081 | show_memory_read_packet_size, | |
1a966eab | 9082 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 9083 | &remote_show_cmdlist); |
c906108c | 9084 | |
b3f42336 | 9085 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
9086 | &remote_hw_watchpoint_limit, _("\ |
9087 | Set the maximum number of target hardware watchpoints."), _("\ | |
9088 | Show the maximum number of target hardware watchpoints."), _("\ | |
9089 | Specify a negative limit for unlimited."), | |
2c5b56ce | 9090 | NULL, NULL, /* FIXME: i18n: The maximum number of target hardware watchpoints is %s. */ |
b3f42336 AC |
9091 | &remote_set_cmdlist, &remote_show_cmdlist); |
9092 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, | |
7915a72c AC |
9093 | &remote_hw_breakpoint_limit, _("\ |
9094 | Set the maximum number of target hardware breakpoints."), _("\ | |
9095 | Show the maximum number of target hardware breakpoints."), _("\ | |
9096 | Specify a negative limit for unlimited."), | |
2c5b56ce | 9097 | NULL, NULL, /* FIXME: i18n: The maximum number of target hardware breakpoints is %s. */ |
b3f42336 | 9098 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 9099 | |
4d28ad1e AC |
9100 | add_setshow_integer_cmd ("remoteaddresssize", class_obscure, |
9101 | &remote_address_size, _("\ | |
9102 | Set the maximum size of the address (in bits) in a memory packet."), _("\ | |
9103 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
9104 | NULL, | |
9105 | NULL, /* FIXME: i18n: */ | |
9106 | &setlist, &showlist); | |
c906108c | 9107 | |
444abaca | 9108 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 9109 | "X", "binary-download", 1); |
0f71a2f6 | 9110 | |
444abaca | 9111 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 9112 | "vCont", "verbose-resume", 0); |
506fb367 | 9113 | |
89be2091 DJ |
9114 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
9115 | "QPassSignals", "pass-signals", 0); | |
9116 | ||
444abaca | 9117 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 9118 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 9119 | |
444abaca | 9120 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 9121 | "P", "set-register", 1); |
d471ea57 | 9122 | |
444abaca | 9123 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 9124 | "p", "fetch-register", 1); |
b96ec7ac | 9125 | |
444abaca | 9126 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 9127 | "Z0", "software-breakpoint", 0); |
d471ea57 | 9128 | |
444abaca | 9129 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 9130 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 9131 | |
444abaca | 9132 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 9133 | "Z2", "write-watchpoint", 0); |
d471ea57 | 9134 | |
444abaca | 9135 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 9136 | "Z3", "read-watchpoint", 0); |
d471ea57 | 9137 | |
444abaca | 9138 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 9139 | "Z4", "access-watchpoint", 0); |
d471ea57 | 9140 | |
0876f84a DJ |
9141 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
9142 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 9143 | |
23181151 DJ |
9144 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
9145 | "qXfer:features:read", "target-features", 0); | |
9146 | ||
cfa9d6d9 DJ |
9147 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
9148 | "qXfer:libraries:read", "library-info", 0); | |
9149 | ||
fd79ecee DJ |
9150 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
9151 | "qXfer:memory-map:read", "memory-map", 0); | |
9152 | ||
0e7f50da UW |
9153 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_read], |
9154 | "qXfer:spu:read", "read-spu-object", 0); | |
9155 | ||
9156 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_write], | |
9157 | "qXfer:spu:write", "write-spu-object", 0); | |
9158 | ||
07e059b5 VP |
9159 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_osdata], |
9160 | "qXfer:osdata:read", "osdata", 0); | |
9161 | ||
4aa995e1 PA |
9162 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_read], |
9163 | "qXfer:siginfo:read", "read-siginfo-object", 0); | |
9164 | ||
9165 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_write], | |
9166 | "qXfer:siginfo:write", "write-siginfo-object", 0); | |
9167 | ||
444abaca | 9168 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 9169 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
9170 | 0); |
9171 | ||
be2a5f71 DJ |
9172 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
9173 | "qSupported", "supported-packets", 0); | |
9174 | ||
08388c79 DE |
9175 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory], |
9176 | "qSearch:memory", "search-memory", 0); | |
9177 | ||
a6b151f1 DJ |
9178 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
9179 | "vFile:open", "hostio-open", 0); | |
9180 | ||
9181 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
9182 | "vFile:pread", "hostio-pread", 0); | |
9183 | ||
9184 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
9185 | "vFile:pwrite", "hostio-pwrite", 0); | |
9186 | ||
9187 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
9188 | "vFile:close", "hostio-close", 0); | |
9189 | ||
9190 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
9191 | "vFile:unlink", "hostio-unlink", 0); | |
9192 | ||
2d717e4f DJ |
9193 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
9194 | "vAttach", "attach", 0); | |
9195 | ||
9196 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
9197 | "vRun", "run", 0); | |
9198 | ||
a6f3e723 SL |
9199 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode], |
9200 | "QStartNoAckMode", "noack", 0); | |
9201 | ||
82f73884 PA |
9202 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill], |
9203 | "vKill", "kill", 0); | |
9204 | ||
0b16c5cf PA |
9205 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached], |
9206 | "qAttached", "query-attached", 0); | |
9207 | ||
782b2b07 SS |
9208 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints], |
9209 | "ConditionalTracepoints", "conditional-tracepoints", 0); | |
9210 | ||
37a105a1 DJ |
9211 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
9212 | Z sub-packet has its own set and show commands, but users may | |
9213 | have sets to this variable in their .gdbinit files (or in their | |
9214 | documentation). */ | |
e9e68a56 | 9215 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
9216 | &remote_Z_packet_detect, _("\ |
9217 | Set use of remote protocol `Z' packets"), _("\ | |
9218 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 9219 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 9220 | packets."), |
e9e68a56 | 9221 | set_remote_protocol_Z_packet_cmd, |
2c5b56ce | 9222 | show_remote_protocol_Z_packet_cmd, /* FIXME: i18n: Use of remote protocol `Z' packets is %s. */ |
e9e68a56 | 9223 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 9224 | |
a6b151f1 DJ |
9225 | add_prefix_cmd ("remote", class_files, remote_command, _("\ |
9226 | Manipulate files on the remote system\n\ | |
9227 | Transfer files to and from the remote target system."), | |
9228 | &remote_cmdlist, "remote ", | |
9229 | 0 /* allow-unknown */, &cmdlist); | |
9230 | ||
9231 | add_cmd ("put", class_files, remote_put_command, | |
9232 | _("Copy a local file to the remote system."), | |
9233 | &remote_cmdlist); | |
9234 | ||
9235 | add_cmd ("get", class_files, remote_get_command, | |
9236 | _("Copy a remote file to the local system."), | |
9237 | &remote_cmdlist); | |
9238 | ||
9239 | add_cmd ("delete", class_files, remote_delete_command, | |
9240 | _("Delete a remote file."), | |
9241 | &remote_cmdlist); | |
9242 | ||
2d717e4f DJ |
9243 | remote_exec_file = xstrdup (""); |
9244 | add_setshow_string_noescape_cmd ("exec-file", class_files, | |
9245 | &remote_exec_file, _("\ | |
9246 | Set the remote pathname for \"run\""), _("\ | |
9247 | Show the remote pathname for \"run\""), NULL, NULL, NULL, | |
9248 | &remote_set_cmdlist, &remote_show_cmdlist); | |
9249 | ||
449092f6 CV |
9250 | /* Eventually initialize fileio. See fileio.c */ |
9251 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
79d7f229 PA |
9252 | |
9253 | /* Take advantage of the fact that the LWP field is not used, to tag | |
9254 | special ptids with it set to != 0. */ | |
82f73884 PA |
9255 | magic_null_ptid = ptid_build (42000, 1, -1); |
9256 | not_sent_ptid = ptid_build (42000, 1, -2); | |
9257 | any_thread_ptid = ptid_build (42000, 1, 0); | |
c906108c | 9258 | } |