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, |
9b254dd1 | 4 | 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 |
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); |
6426a772 | 82 | |
a14ed312 KB |
83 | static void handle_remote_sigint (int); |
84 | static void handle_remote_sigint_twice (int); | |
85 | static void async_remote_interrupt (gdb_client_data); | |
86 | void async_remote_interrupt_twice (gdb_client_data); | |
43ff13b4 | 87 | |
a14ed312 | 88 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 89 | |
316f2060 | 90 | static void remote_prepare_to_store (struct regcache *regcache); |
c906108c | 91 | |
56be3814 | 92 | static void remote_fetch_registers (struct regcache *regcache, int regno); |
c906108c | 93 | |
39f77062 KB |
94 | static void remote_resume (ptid_t ptid, int step, |
95 | enum target_signal siggnal); | |
a14ed312 | 96 | static void remote_open (char *name, int from_tty); |
c906108c | 97 | |
a14ed312 | 98 | static void extended_remote_open (char *name, int from_tty); |
c906108c | 99 | |
75c99385 | 100 | static void remote_open_1 (char *, int, struct target_ops *, int extended_p); |
c906108c | 101 | |
a14ed312 | 102 | static void remote_close (int quitting); |
c906108c | 103 | |
56be3814 | 104 | static void remote_store_registers (struct regcache *regcache, int regno); |
c906108c | 105 | |
a14ed312 | 106 | static void remote_mourn (void); |
c906108c | 107 | |
a14ed312 | 108 | static void extended_remote_restart (void); |
c906108c | 109 | |
a14ed312 | 110 | static void extended_remote_mourn (void); |
c906108c | 111 | |
a14ed312 | 112 | static void remote_mourn_1 (struct target_ops *); |
c906108c | 113 | |
6d820c5c | 114 | static void remote_send (char **buf, long *sizeof_buf_p); |
c906108c | 115 | |
a14ed312 | 116 | static int readchar (int timeout); |
c906108c | 117 | |
39f77062 | 118 | static ptid_t remote_wait (ptid_t ptid, |
75c99385 | 119 | struct target_waitstatus *status); |
c906108c | 120 | |
a14ed312 | 121 | static void remote_kill (void); |
c906108c | 122 | |
a14ed312 | 123 | static int tohex (int nib); |
c906108c | 124 | |
75c99385 PA |
125 | static int remote_can_async_p (void); |
126 | ||
127 | static int remote_is_async_p (void); | |
128 | ||
129 | static void remote_async (void (*callback) (enum inferior_event_type event_type, | |
130 | void *context), void *context); | |
131 | ||
132 | static int remote_async_mask (int new_mask); | |
133 | ||
a14ed312 | 134 | static void remote_detach (char *args, int from_tty); |
c906108c | 135 | |
a14ed312 | 136 | static void remote_interrupt (int signo); |
c906108c | 137 | |
a14ed312 | 138 | static void remote_interrupt_twice (int signo); |
7a292a7a | 139 | |
a14ed312 | 140 | static void interrupt_query (void); |
c906108c | 141 | |
79d7f229 PA |
142 | static void set_general_thread (struct ptid ptid); |
143 | static void set_continue_thread (struct ptid ptid); | |
c906108c | 144 | |
39f77062 | 145 | static int remote_thread_alive (ptid_t); |
c906108c | 146 | |
a14ed312 | 147 | static void get_offsets (void); |
c906108c | 148 | |
6d820c5c DJ |
149 | static void skip_frame (void); |
150 | ||
151 | static long read_frame (char **buf_p, long *sizeof_buf); | |
c906108c | 152 | |
a14ed312 | 153 | static int hexnumlen (ULONGEST num); |
c906108c | 154 | |
a14ed312 | 155 | static void init_remote_ops (void); |
c906108c | 156 | |
a14ed312 | 157 | static void init_extended_remote_ops (void); |
c906108c | 158 | |
94cc34af | 159 | static void remote_stop (ptid_t); |
c906108c | 160 | |
a14ed312 | 161 | static int ishex (int ch, int *val); |
c906108c | 162 | |
a14ed312 | 163 | static int stubhex (int ch); |
c906108c | 164 | |
a14ed312 | 165 | static int hexnumstr (char *, ULONGEST); |
c906108c | 166 | |
a14ed312 | 167 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 168 | |
a14ed312 | 169 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 170 | |
a14ed312 | 171 | static void print_packet (char *); |
c906108c | 172 | |
a14ed312 | 173 | static unsigned long crc32 (unsigned char *, int, unsigned int); |
c906108c | 174 | |
a14ed312 | 175 | static void compare_sections_command (char *, int); |
c906108c | 176 | |
a14ed312 | 177 | static void packet_command (char *, int); |
c906108c | 178 | |
a14ed312 | 179 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 180 | |
39f77062 | 181 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 182 | |
a14ed312 | 183 | static void remote_find_new_threads (void); |
c906108c | 184 | |
79d7f229 | 185 | static void record_currthread (ptid_t currthread); |
c906108c | 186 | |
30559e10 | 187 | static int fromhex (int a); |
c906108c | 188 | |
cfd77fa1 | 189 | static int hex2bin (const char *hex, gdb_byte *bin, int count); |
c906108c | 190 | |
cfd77fa1 | 191 | static int bin2hex (const gdb_byte *bin, char *hex, int count); |
234fa6d1 | 192 | |
a14ed312 | 193 | static int putpkt_binary (char *buf, int cnt); |
c906108c | 194 | |
a14ed312 | 195 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 196 | |
5a2468f5 | 197 | struct packet_config; |
5a2468f5 | 198 | |
a14ed312 | 199 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 200 | |
d471ea57 | 201 | static void update_packet_config (struct packet_config *config); |
5a2468f5 | 202 | |
bb572ddd DJ |
203 | static void set_remote_protocol_packet_cmd (char *args, int from_tty, |
204 | struct cmd_list_element *c); | |
205 | ||
206 | static void show_remote_protocol_packet_cmd (struct ui_file *file, | |
207 | int from_tty, | |
208 | struct cmd_list_element *c, | |
209 | const char *value); | |
210 | ||
82f73884 PA |
211 | static char *write_ptid (char *buf, const char *endbuf, ptid_t ptid); |
212 | static ptid_t read_ptid (char *buf, char **obuf); | |
213 | ||
c8d104ad PA |
214 | static void remote_query_supported (void); |
215 | ||
216 | static void remote_check_symbols (struct objfile *objfile); | |
217 | ||
a14ed312 | 218 | void _initialize_remote (void); |
c906108c | 219 | |
a6b151f1 DJ |
220 | /* For "remote". */ |
221 | ||
222 | static struct cmd_list_element *remote_cmdlist; | |
223 | ||
bb572ddd DJ |
224 | /* For "set remote" and "show remote". */ |
225 | ||
226 | static struct cmd_list_element *remote_set_cmdlist; | |
227 | static struct cmd_list_element *remote_show_cmdlist; | |
228 | ||
ea9c271d DJ |
229 | /* Description of the remote protocol state for the currently |
230 | connected target. This is per-target state, and independent of the | |
231 | selected architecture. */ | |
232 | ||
233 | struct remote_state | |
234 | { | |
235 | /* A buffer to use for incoming packets, and its current size. The | |
236 | buffer is grown dynamically for larger incoming packets. | |
237 | Outgoing packets may also be constructed in this buffer. | |
238 | BUF_SIZE is always at least REMOTE_PACKET_SIZE; | |
239 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing | |
240 | packets. */ | |
241 | char *buf; | |
242 | long buf_size; | |
be2a5f71 DJ |
243 | |
244 | /* If we negotiated packet size explicitly (and thus can bypass | |
245 | heuristics for the largest packet size that will not overflow | |
246 | a buffer in the stub), this will be set to that packet size. | |
247 | Otherwise zero, meaning to use the guessed size. */ | |
248 | long explicit_packet_size; | |
2d717e4f DJ |
249 | |
250 | /* remote_wait is normally called when the target is running and | |
251 | waits for a stop reply packet. But sometimes we need to call it | |
252 | when the target is already stopped. We can send a "?" packet | |
253 | and have remote_wait read the response. Or, if we already have | |
254 | the response, we can stash it in BUF and tell remote_wait to | |
255 | skip calling getpkt. This flag is set when BUF contains a | |
256 | stop reply packet and the target is not waiting. */ | |
257 | int cached_wait_status; | |
a6f3e723 SL |
258 | |
259 | /* True, if in no ack mode. That is, neither GDB nor the stub will | |
260 | expect acks from each other. The connection is assumed to be | |
261 | reliable. */ | |
262 | int noack_mode; | |
82f73884 PA |
263 | |
264 | /* True if we're connected in extended remote mode. */ | |
265 | int extended; | |
266 | ||
267 | /* True if the stub reported support for multi-process | |
268 | extensions. */ | |
269 | int multi_process_aware; | |
e24a49d8 PA |
270 | |
271 | /* True if we resumed the target and we're waiting for the target to | |
272 | stop. In the mean time, we can't start another command/query. | |
273 | The remote server wouldn't be ready to process it, so we'd | |
274 | timeout waiting for a reply that would never come and eventually | |
275 | we'd close the connection. This can happen in asynchronous mode | |
276 | because we allow GDB commands while the target is running. */ | |
277 | int waiting_for_stop_reply; | |
ea9c271d DJ |
278 | }; |
279 | ||
82f73884 PA |
280 | /* Returns true if the multi-process extensions are in effect. */ |
281 | static int | |
282 | remote_multi_process_p (struct remote_state *rs) | |
283 | { | |
284 | return rs->extended && rs->multi_process_aware; | |
285 | } | |
286 | ||
ea9c271d DJ |
287 | /* This data could be associated with a target, but we do not always |
288 | have access to the current target when we need it, so for now it is | |
289 | static. This will be fine for as long as only one target is in use | |
290 | at a time. */ | |
291 | static struct remote_state remote_state; | |
292 | ||
293 | static struct remote_state * | |
0b83947e | 294 | get_remote_state_raw (void) |
ea9c271d DJ |
295 | { |
296 | return &remote_state; | |
297 | } | |
298 | ||
299 | /* Description of the remote protocol for a given architecture. */ | |
d01949b6 | 300 | |
ad10f812 AC |
301 | struct packet_reg |
302 | { | |
303 | long offset; /* Offset into G packet. */ | |
304 | long regnum; /* GDB's internal register number. */ | |
305 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 306 | int in_g_packet; /* Always part of G packet. */ |
1cf3db46 | 307 | /* long size in bytes; == register_size (target_gdbarch, regnum); |
23860348 | 308 | at present. */ |
1cf3db46 | 309 | /* char *name; == gdbarch_register_name (target_gdbarch, regnum); |
c9f4d572 | 310 | at present. */ |
ad10f812 AC |
311 | }; |
312 | ||
ea9c271d | 313 | struct remote_arch_state |
d01949b6 | 314 | { |
ad10f812 AC |
315 | /* Description of the remote protocol registers. */ |
316 | long sizeof_g_packet; | |
b323314b AC |
317 | |
318 | /* Description of the remote protocol registers indexed by REGNUM | |
f57d151a | 319 | (making an array gdbarch_num_regs in size). */ |
b323314b | 320 | struct packet_reg *regs; |
ad10f812 | 321 | |
d01949b6 AC |
322 | /* This is the size (in chars) of the first response to the ``g'' |
323 | packet. It is used as a heuristic when determining the maximum | |
324 | size of memory-read and memory-write packets. A target will | |
325 | typically only reserve a buffer large enough to hold the ``g'' | |
326 | packet. The size does not include packet overhead (headers and | |
23860348 | 327 | trailers). */ |
d01949b6 AC |
328 | long actual_register_packet_size; |
329 | ||
330 | /* This is the maximum size (in chars) of a non read/write packet. | |
23860348 | 331 | It is also used as a cap on the size of read/write packets. */ |
d01949b6 AC |
332 | long remote_packet_size; |
333 | }; | |
334 | ||
3c3bea1c | 335 | |
d01949b6 AC |
336 | /* Handle for retreving the remote protocol data from gdbarch. */ |
337 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
338 | ||
ea9c271d DJ |
339 | static struct remote_arch_state * |
340 | get_remote_arch_state (void) | |
d01949b6 | 341 | { |
1cf3db46 | 342 | return gdbarch_data (target_gdbarch, remote_gdbarch_data_handle); |
d01949b6 AC |
343 | } |
344 | ||
0b83947e DJ |
345 | /* Fetch the global remote target state. */ |
346 | ||
347 | static struct remote_state * | |
348 | get_remote_state (void) | |
349 | { | |
350 | /* Make sure that the remote architecture state has been | |
351 | initialized, because doing so might reallocate rs->buf. Any | |
352 | function which calls getpkt also needs to be mindful of changes | |
353 | to rs->buf, but this call limits the number of places which run | |
354 | into trouble. */ | |
355 | get_remote_arch_state (); | |
356 | ||
357 | return get_remote_state_raw (); | |
358 | } | |
359 | ||
74ca34ce DJ |
360 | static int |
361 | compare_pnums (const void *lhs_, const void *rhs_) | |
362 | { | |
363 | const struct packet_reg * const *lhs = lhs_; | |
364 | const struct packet_reg * const *rhs = rhs_; | |
365 | ||
366 | if ((*lhs)->pnum < (*rhs)->pnum) | |
367 | return -1; | |
368 | else if ((*lhs)->pnum == (*rhs)->pnum) | |
369 | return 0; | |
370 | else | |
371 | return 1; | |
372 | } | |
373 | ||
d01949b6 AC |
374 | static void * |
375 | init_remote_state (struct gdbarch *gdbarch) | |
376 | { | |
74ca34ce | 377 | int regnum, num_remote_regs, offset; |
0b83947e | 378 | struct remote_state *rs = get_remote_state_raw (); |
ea9c271d | 379 | struct remote_arch_state *rsa; |
74ca34ce | 380 | struct packet_reg **remote_regs; |
ea9c271d DJ |
381 | |
382 | rsa = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_arch_state); | |
d01949b6 | 383 | |
123dc839 DJ |
384 | /* Use the architecture to build a regnum<->pnum table, which will be |
385 | 1:1 unless a feature set specifies otherwise. */ | |
f57d151a | 386 | rsa->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, |
4a22f64d | 387 | gdbarch_num_regs (gdbarch), |
f57d151a | 388 | struct packet_reg); |
4a22f64d | 389 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) |
ad10f812 | 390 | { |
ea9c271d | 391 | struct packet_reg *r = &rsa->regs[regnum]; |
baef701f | 392 | |
4a22f64d | 393 | if (register_size (gdbarch, regnum) == 0) |
baef701f DJ |
394 | /* Do not try to fetch zero-sized (placeholder) registers. */ |
395 | r->pnum = -1; | |
396 | else | |
397 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
398 | ||
b323314b | 399 | r->regnum = regnum; |
74ca34ce DJ |
400 | } |
401 | ||
402 | /* Define the g/G packet format as the contents of each register | |
403 | with a remote protocol number, in order of ascending protocol | |
404 | number. */ | |
405 | ||
4a22f64d UW |
406 | remote_regs = alloca (gdbarch_num_regs (gdbarch) |
407 | * sizeof (struct packet_reg *)); | |
f57d151a | 408 | for (num_remote_regs = 0, regnum = 0; |
4a22f64d | 409 | regnum < gdbarch_num_regs (gdbarch); |
f57d151a | 410 | regnum++) |
74ca34ce DJ |
411 | if (rsa->regs[regnum].pnum != -1) |
412 | remote_regs[num_remote_regs++] = &rsa->regs[regnum]; | |
7d58c67d | 413 | |
74ca34ce DJ |
414 | qsort (remote_regs, num_remote_regs, sizeof (struct packet_reg *), |
415 | compare_pnums); | |
416 | ||
417 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
418 | { | |
419 | remote_regs[regnum]->in_g_packet = 1; | |
420 | remote_regs[regnum]->offset = offset; | |
4a22f64d | 421 | offset += register_size (gdbarch, remote_regs[regnum]->regnum); |
ad10f812 AC |
422 | } |
423 | ||
74ca34ce DJ |
424 | /* Record the maximum possible size of the g packet - it may turn out |
425 | to be smaller. */ | |
426 | rsa->sizeof_g_packet = offset; | |
427 | ||
d01949b6 AC |
428 | /* Default maximum number of characters in a packet body. Many |
429 | remote stubs have a hardwired buffer size of 400 bytes | |
430 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
431 | as the maximum packet-size to ensure that the packet and an extra | |
432 | NUL character can always fit in the buffer. This stops GDB | |
433 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d DJ |
434 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
435 | rsa->remote_packet_size = 400 - 1; | |
d01949b6 | 436 | |
ea9c271d DJ |
437 | /* This one is filled in when a ``g'' packet is received. */ |
438 | rsa->actual_register_packet_size = 0; | |
439 | ||
440 | /* Should rsa->sizeof_g_packet needs more space than the | |
ad10f812 AC |
441 | default, adjust the size accordingly. Remember that each byte is |
442 | encoded as two characters. 32 is the overhead for the packet | |
443 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 444 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 445 | little. */ |
ea9c271d DJ |
446 | if (rsa->sizeof_g_packet > ((rsa->remote_packet_size - 32) / 2)) |
447 | rsa->remote_packet_size = (rsa->sizeof_g_packet * 2 + 32); | |
802188a7 | 448 | |
ea9c271d DJ |
449 | /* Make sure that the packet buffer is plenty big enough for |
450 | this architecture. */ | |
451 | if (rs->buf_size < rsa->remote_packet_size) | |
452 | { | |
453 | rs->buf_size = 2 * rsa->remote_packet_size; | |
7fca722e | 454 | rs->buf = xrealloc (rs->buf, rs->buf_size); |
ea9c271d | 455 | } |
6d820c5c | 456 | |
ea9c271d DJ |
457 | return rsa; |
458 | } | |
459 | ||
460 | /* Return the current allowed size of a remote packet. This is | |
461 | inferred from the current architecture, and should be used to | |
462 | limit the length of outgoing packets. */ | |
463 | static long | |
464 | get_remote_packet_size (void) | |
465 | { | |
be2a5f71 | 466 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
467 | struct remote_arch_state *rsa = get_remote_arch_state (); |
468 | ||
be2a5f71 DJ |
469 | if (rs->explicit_packet_size) |
470 | return rs->explicit_packet_size; | |
471 | ||
ea9c271d | 472 | return rsa->remote_packet_size; |
d01949b6 AC |
473 | } |
474 | ||
ad10f812 | 475 | static struct packet_reg * |
ea9c271d | 476 | packet_reg_from_regnum (struct remote_arch_state *rsa, long regnum) |
ad10f812 | 477 | { |
1cf3db46 | 478 | if (regnum < 0 && regnum >= gdbarch_num_regs (target_gdbarch)) |
b323314b AC |
479 | return NULL; |
480 | else | |
ad10f812 | 481 | { |
ea9c271d | 482 | struct packet_reg *r = &rsa->regs[regnum]; |
b323314b AC |
483 | gdb_assert (r->regnum == regnum); |
484 | return r; | |
ad10f812 | 485 | } |
ad10f812 AC |
486 | } |
487 | ||
488 | static struct packet_reg * | |
ea9c271d | 489 | packet_reg_from_pnum (struct remote_arch_state *rsa, LONGEST pnum) |
ad10f812 | 490 | { |
b323314b | 491 | int i; |
1cf3db46 | 492 | for (i = 0; i < gdbarch_num_regs (target_gdbarch); i++) |
ad10f812 | 493 | { |
ea9c271d | 494 | struct packet_reg *r = &rsa->regs[i]; |
b323314b AC |
495 | if (r->pnum == pnum) |
496 | return r; | |
ad10f812 AC |
497 | } |
498 | return NULL; | |
d01949b6 AC |
499 | } |
500 | ||
3c3bea1c GS |
501 | /* FIXME: graces/2002-08-08: These variables should eventually be |
502 | bound to an instance of the target object (as in gdbarch-tdep()), | |
503 | when such a thing exists. */ | |
504 | ||
505 | /* This is set to the data address of the access causing the target | |
506 | to stop for a watchpoint. */ | |
507 | static CORE_ADDR remote_watch_data_address; | |
508 | ||
94e08568 | 509 | /* This is non-zero if target stopped for a watchpoint. */ |
3c3bea1c GS |
510 | static int remote_stopped_by_watchpoint_p; |
511 | ||
c906108c SS |
512 | static struct target_ops remote_ops; |
513 | ||
514 | static struct target_ops extended_remote_ops; | |
515 | ||
b84876c2 PA |
516 | static int remote_async_mask_value = 1; |
517 | ||
6426a772 JM |
518 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
519 | ``forever'' still use the normal timeout mechanism. This is | |
520 | currently used by the ASYNC code to guarentee that target reads | |
521 | during the initial connect always time-out. Once getpkt has been | |
522 | modified to return a timeout indication and, in turn | |
523 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 524 | this can go away. */ |
6426a772 JM |
525 | static int wait_forever_enabled_p = 1; |
526 | ||
527 | ||
c906108c SS |
528 | /* This variable chooses whether to send a ^C or a break when the user |
529 | requests program interruption. Although ^C is usually what remote | |
530 | systems expect, and that is the default here, sometimes a break is | |
531 | preferable instead. */ | |
532 | ||
533 | static int remote_break; | |
534 | ||
c906108c SS |
535 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
536 | remote_open knows that we don't have a file open when the program | |
537 | starts. */ | |
819cc324 | 538 | static struct serial *remote_desc = NULL; |
c906108c | 539 | |
c906108c SS |
540 | /* This variable sets the number of bits in an address that are to be |
541 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
542 | leading zeros, the entire address would be sent. This variable | |
543 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The | |
544 | initial implementation of remote.c restricted the address sent in | |
545 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
546 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
547 | address was never sent. Since fixing this bug may cause a break in | |
548 | some remote targets this variable is principly provided to | |
23860348 | 549 | facilitate backward compatibility. */ |
c906108c SS |
550 | |
551 | static int remote_address_size; | |
552 | ||
75c99385 PA |
553 | /* Temporary to track who currently owns the terminal. See |
554 | remote_terminal_* for more details. */ | |
6426a772 JM |
555 | |
556 | static int remote_async_terminal_ours_p; | |
557 | ||
2d717e4f DJ |
558 | /* The executable file to use for "run" on the remote side. */ |
559 | ||
560 | static char *remote_exec_file = ""; | |
561 | ||
11cf8741 | 562 | \f |
11cf8741 | 563 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
564 | memory read/write packet. MIN (rsa->remote_packet_size, |
565 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 566 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
567 | (speed up transfers). The variables ``preferred_*'' (the user |
568 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 569 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
570 | |
571 | struct memory_packet_config | |
572 | { | |
573 | char *name; | |
574 | long size; | |
575 | int fixed_p; | |
576 | }; | |
577 | ||
578 | /* Compute the current size of a read/write packet. Since this makes | |
579 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
580 | ||
581 | static long | |
582 | get_memory_packet_size (struct memory_packet_config *config) | |
583 | { | |
d01949b6 | 584 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
585 | struct remote_arch_state *rsa = get_remote_arch_state (); |
586 | ||
11cf8741 JM |
587 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk |
588 | law?) that some hosts don't cope very well with large alloca() | |
589 | calls. Eventually the alloca() code will be replaced by calls to | |
590 | xmalloc() and make_cleanups() allowing this restriction to either | |
23860348 | 591 | be lifted or removed. */ |
11cf8741 JM |
592 | #ifndef MAX_REMOTE_PACKET_SIZE |
593 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
594 | #endif | |
3de11b2e | 595 | /* NOTE: 20 ensures we can write at least one byte. */ |
11cf8741 | 596 | #ifndef MIN_REMOTE_PACKET_SIZE |
3de11b2e | 597 | #define MIN_REMOTE_PACKET_SIZE 20 |
11cf8741 JM |
598 | #endif |
599 | long what_they_get; | |
600 | if (config->fixed_p) | |
601 | { | |
602 | if (config->size <= 0) | |
603 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
604 | else | |
605 | what_they_get = config->size; | |
606 | } | |
607 | else | |
608 | { | |
ea9c271d | 609 | what_they_get = get_remote_packet_size (); |
23860348 | 610 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
611 | if (config->size > 0 |
612 | && what_they_get > config->size) | |
613 | what_they_get = config->size; | |
be2a5f71 DJ |
614 | |
615 | /* Limit it to the size of the targets ``g'' response unless we have | |
616 | permission from the stub to use a larger packet size. */ | |
617 | if (rs->explicit_packet_size == 0 | |
618 | && rsa->actual_register_packet_size > 0 | |
619 | && what_they_get > rsa->actual_register_packet_size) | |
620 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 JM |
621 | } |
622 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
623 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
624 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
625 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
6d820c5c DJ |
626 | |
627 | /* Make sure there is room in the global buffer for this packet | |
628 | (including its trailing NUL byte). */ | |
629 | if (rs->buf_size < what_they_get + 1) | |
630 | { | |
631 | rs->buf_size = 2 * what_they_get; | |
632 | rs->buf = xrealloc (rs->buf, 2 * what_they_get); | |
633 | } | |
634 | ||
11cf8741 JM |
635 | return what_they_get; |
636 | } | |
637 | ||
638 | /* Update the size of a read/write packet. If they user wants | |
23860348 | 639 | something really big then do a sanity check. */ |
11cf8741 JM |
640 | |
641 | static void | |
642 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
643 | { | |
644 | int fixed_p = config->fixed_p; | |
645 | long size = config->size; | |
646 | if (args == NULL) | |
8a3fe4f8 | 647 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
648 | else if (strcmp (args, "hard") == 0 |
649 | || strcmp (args, "fixed") == 0) | |
650 | fixed_p = 1; | |
651 | else if (strcmp (args, "soft") == 0 | |
652 | || strcmp (args, "limit") == 0) | |
653 | fixed_p = 0; | |
654 | else | |
655 | { | |
656 | char *end; | |
657 | size = strtoul (args, &end, 0); | |
658 | if (args == end) | |
8a3fe4f8 | 659 | error (_("Invalid %s (bad syntax)."), config->name); |
11cf8741 JM |
660 | #if 0 |
661 | /* Instead of explicitly capping the size of a packet to | |
662 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
663 | instead allowed to set the size to something arbitrarily | |
23860348 | 664 | large. */ |
11cf8741 | 665 | if (size > MAX_REMOTE_PACKET_SIZE) |
8a3fe4f8 | 666 | error (_("Invalid %s (too large)."), config->name); |
11cf8741 JM |
667 | #endif |
668 | } | |
23860348 | 669 | /* Extra checks? */ |
11cf8741 JM |
670 | if (fixed_p && !config->fixed_p) |
671 | { | |
e2e0b3e5 AC |
672 | if (! query (_("The target may not be able to correctly handle a %s\n" |
673 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 674 | config->name, size)) |
8a3fe4f8 | 675 | error (_("Packet size not changed.")); |
11cf8741 | 676 | } |
23860348 | 677 | /* Update the config. */ |
11cf8741 JM |
678 | config->fixed_p = fixed_p; |
679 | config->size = size; | |
680 | } | |
681 | ||
682 | static void | |
683 | show_memory_packet_size (struct memory_packet_config *config) | |
684 | { | |
a3f17187 | 685 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 686 | if (config->fixed_p) |
a3f17187 | 687 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
688 | get_memory_packet_size (config)); |
689 | else | |
a3f17187 | 690 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
691 | get_memory_packet_size (config)); |
692 | } | |
693 | ||
694 | static struct memory_packet_config memory_write_packet_config = | |
695 | { | |
696 | "memory-write-packet-size", | |
697 | }; | |
698 | ||
699 | static void | |
700 | set_memory_write_packet_size (char *args, int from_tty) | |
701 | { | |
702 | set_memory_packet_size (args, &memory_write_packet_config); | |
703 | } | |
704 | ||
705 | static void | |
706 | show_memory_write_packet_size (char *args, int from_tty) | |
707 | { | |
708 | show_memory_packet_size (&memory_write_packet_config); | |
709 | } | |
710 | ||
711 | static long | |
712 | get_memory_write_packet_size (void) | |
713 | { | |
714 | return get_memory_packet_size (&memory_write_packet_config); | |
715 | } | |
716 | ||
717 | static struct memory_packet_config memory_read_packet_config = | |
718 | { | |
719 | "memory-read-packet-size", | |
720 | }; | |
721 | ||
722 | static void | |
723 | set_memory_read_packet_size (char *args, int from_tty) | |
724 | { | |
725 | set_memory_packet_size (args, &memory_read_packet_config); | |
726 | } | |
727 | ||
728 | static void | |
729 | show_memory_read_packet_size (char *args, int from_tty) | |
730 | { | |
731 | show_memory_packet_size (&memory_read_packet_config); | |
732 | } | |
733 | ||
734 | static long | |
735 | get_memory_read_packet_size (void) | |
736 | { | |
737 | long size = get_memory_packet_size (&memory_read_packet_config); | |
738 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an | |
739 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
740 | increased beyond this. */ |
741 | if (size > get_remote_packet_size ()) | |
742 | size = get_remote_packet_size (); | |
11cf8741 JM |
743 | return size; |
744 | } | |
745 | ||
11cf8741 | 746 | \f |
5a2468f5 JM |
747 | /* Generic configuration support for packets the stub optionally |
748 | supports. Allows the user to specify the use of the packet as well | |
23860348 | 749 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
750 | |
751 | enum packet_support | |
752 | { | |
753 | PACKET_SUPPORT_UNKNOWN = 0, | |
754 | PACKET_ENABLE, | |
755 | PACKET_DISABLE | |
756 | }; | |
757 | ||
5a2468f5 JM |
758 | struct packet_config |
759 | { | |
bb572ddd DJ |
760 | const char *name; |
761 | const char *title; | |
7f19b9a2 | 762 | enum auto_boolean detect; |
5a2468f5 JM |
763 | enum packet_support support; |
764 | }; | |
765 | ||
d471ea57 | 766 | /* Analyze a packet's return value and update the packet config |
23860348 | 767 | accordingly. */ |
d471ea57 AC |
768 | |
769 | enum packet_result | |
770 | { | |
771 | PACKET_ERROR, | |
772 | PACKET_OK, | |
773 | PACKET_UNKNOWN | |
774 | }; | |
775 | ||
5a2468f5 | 776 | static void |
d471ea57 | 777 | update_packet_config (struct packet_config *config) |
5a2468f5 | 778 | { |
d471ea57 AC |
779 | switch (config->detect) |
780 | { | |
7f19b9a2 | 781 | case AUTO_BOOLEAN_TRUE: |
d471ea57 AC |
782 | config->support = PACKET_ENABLE; |
783 | break; | |
7f19b9a2 | 784 | case AUTO_BOOLEAN_FALSE: |
d471ea57 AC |
785 | config->support = PACKET_DISABLE; |
786 | break; | |
7f19b9a2 | 787 | case AUTO_BOOLEAN_AUTO: |
d471ea57 AC |
788 | config->support = PACKET_SUPPORT_UNKNOWN; |
789 | break; | |
790 | } | |
5a2468f5 JM |
791 | } |
792 | ||
793 | static void | |
fba45db2 | 794 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
795 | { |
796 | char *support = "internal-error"; | |
797 | switch (config->support) | |
798 | { | |
799 | case PACKET_ENABLE: | |
800 | support = "enabled"; | |
801 | break; | |
802 | case PACKET_DISABLE: | |
803 | support = "disabled"; | |
804 | break; | |
805 | case PACKET_SUPPORT_UNKNOWN: | |
806 | support = "unknown"; | |
807 | break; | |
808 | } | |
809 | switch (config->detect) | |
810 | { | |
7f19b9a2 | 811 | case AUTO_BOOLEAN_AUTO: |
37a105a1 DJ |
812 | printf_filtered (_("Support for the `%s' packet is auto-detected, currently %s.\n"), |
813 | config->name, support); | |
5a2468f5 | 814 | break; |
7f19b9a2 AC |
815 | case AUTO_BOOLEAN_TRUE: |
816 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
817 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
818 | config->name, support); | |
8e248173 | 819 | break; |
5a2468f5 JM |
820 | } |
821 | } | |
822 | ||
823 | static void | |
bb572ddd DJ |
824 | add_packet_config_cmd (struct packet_config *config, const char *name, |
825 | const char *title, int legacy) | |
d471ea57 | 826 | { |
5a2468f5 JM |
827 | char *set_doc; |
828 | char *show_doc; | |
d471ea57 | 829 | char *cmd_name; |
3ed07be4 | 830 | |
5a2468f5 JM |
831 | config->name = name; |
832 | config->title = title; | |
7f19b9a2 | 833 | config->detect = AUTO_BOOLEAN_AUTO; |
8e248173 | 834 | config->support = PACKET_SUPPORT_UNKNOWN; |
b435e160 AC |
835 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
836 | name, title); | |
837 | show_doc = xstrprintf ("Show current use of remote protocol `%s' (%s) packet", | |
838 | name, title); | |
d471ea57 | 839 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 840 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 841 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
2c5b56ce | 842 | &config->detect, set_doc, show_doc, NULL, /* help_doc */ |
bb572ddd DJ |
843 | set_remote_protocol_packet_cmd, |
844 | show_remote_protocol_packet_cmd, | |
845 | &remote_set_cmdlist, &remote_show_cmdlist); | |
23860348 | 846 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
847 | if (legacy) |
848 | { | |
849 | char *legacy_name; | |
b435e160 | 850 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 851 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 852 | &remote_set_cmdlist); |
d471ea57 | 853 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 854 | &remote_show_cmdlist); |
d471ea57 | 855 | } |
5a2468f5 JM |
856 | } |
857 | ||
d471ea57 | 858 | static enum packet_result |
a76d924d | 859 | packet_check_result (const char *buf) |
5a2468f5 | 860 | { |
d471ea57 | 861 | if (buf[0] != '\0') |
5a2468f5 | 862 | { |
d471ea57 | 863 | /* The stub recognized the packet request. Check that the |
23860348 | 864 | operation succeeded. */ |
a76d924d DJ |
865 | if (buf[0] == 'E' |
866 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
867 | && buf[3] == '\0') | |
868 | /* "Enn" - definitly an error. */ | |
869 | return PACKET_ERROR; | |
870 | ||
871 | /* Always treat "E." as an error. This will be used for | |
872 | more verbose error messages, such as E.memtypes. */ | |
873 | if (buf[0] == 'E' && buf[1] == '.') | |
874 | return PACKET_ERROR; | |
875 | ||
876 | /* The packet may or may not be OK. Just assume it is. */ | |
877 | return PACKET_OK; | |
878 | } | |
879 | else | |
880 | /* The stub does not support the packet. */ | |
881 | return PACKET_UNKNOWN; | |
882 | } | |
883 | ||
884 | static enum packet_result | |
885 | packet_ok (const char *buf, struct packet_config *config) | |
886 | { | |
887 | enum packet_result result; | |
888 | ||
889 | result = packet_check_result (buf); | |
890 | switch (result) | |
891 | { | |
892 | case PACKET_OK: | |
893 | case PACKET_ERROR: | |
894 | /* The stub recognized the packet request. */ | |
d471ea57 AC |
895 | switch (config->support) |
896 | { | |
897 | case PACKET_SUPPORT_UNKNOWN: | |
898 | if (remote_debug) | |
899 | fprintf_unfiltered (gdb_stdlog, | |
900 | "Packet %s (%s) is supported\n", | |
901 | config->name, config->title); | |
902 | config->support = PACKET_ENABLE; | |
903 | break; | |
904 | case PACKET_DISABLE: | |
8e65ff28 | 905 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 906 | _("packet_ok: attempt to use a disabled packet")); |
d471ea57 AC |
907 | break; |
908 | case PACKET_ENABLE: | |
909 | break; | |
910 | } | |
a76d924d DJ |
911 | break; |
912 | case PACKET_UNKNOWN: | |
23860348 | 913 | /* The stub does not support the packet. */ |
d471ea57 AC |
914 | switch (config->support) |
915 | { | |
916 | case PACKET_ENABLE: | |
7f19b9a2 | 917 | if (config->detect == AUTO_BOOLEAN_AUTO) |
d471ea57 | 918 | /* If the stub previously indicated that the packet was |
23860348 | 919 | supported then there is a protocol error.. */ |
8a3fe4f8 | 920 | error (_("Protocol error: %s (%s) conflicting enabled responses."), |
d471ea57 AC |
921 | config->name, config->title); |
922 | else | |
23860348 | 923 | /* The user set it wrong. */ |
8a3fe4f8 | 924 | error (_("Enabled packet %s (%s) not recognized by stub"), |
d471ea57 AC |
925 | config->name, config->title); |
926 | break; | |
927 | case PACKET_SUPPORT_UNKNOWN: | |
928 | if (remote_debug) | |
929 | fprintf_unfiltered (gdb_stdlog, | |
930 | "Packet %s (%s) is NOT supported\n", | |
931 | config->name, config->title); | |
932 | config->support = PACKET_DISABLE; | |
933 | break; | |
934 | case PACKET_DISABLE: | |
935 | break; | |
936 | } | |
a76d924d | 937 | break; |
5a2468f5 | 938 | } |
a76d924d DJ |
939 | |
940 | return result; | |
5a2468f5 JM |
941 | } |
942 | ||
444abaca DJ |
943 | enum { |
944 | PACKET_vCont = 0, | |
945 | PACKET_X, | |
946 | PACKET_qSymbol, | |
947 | PACKET_P, | |
948 | PACKET_p, | |
949 | PACKET_Z0, | |
950 | PACKET_Z1, | |
951 | PACKET_Z2, | |
952 | PACKET_Z3, | |
953 | PACKET_Z4, | |
a6b151f1 DJ |
954 | PACKET_vFile_open, |
955 | PACKET_vFile_pread, | |
956 | PACKET_vFile_pwrite, | |
957 | PACKET_vFile_close, | |
958 | PACKET_vFile_unlink, | |
0876f84a | 959 | PACKET_qXfer_auxv, |
23181151 | 960 | PACKET_qXfer_features, |
cfa9d6d9 | 961 | PACKET_qXfer_libraries, |
fd79ecee | 962 | PACKET_qXfer_memory_map, |
0e7f50da UW |
963 | PACKET_qXfer_spu_read, |
964 | PACKET_qXfer_spu_write, | |
444abaca | 965 | PACKET_qGetTLSAddr, |
be2a5f71 | 966 | PACKET_qSupported, |
89be2091 | 967 | PACKET_QPassSignals, |
08388c79 | 968 | PACKET_qSearch_memory, |
2d717e4f DJ |
969 | PACKET_vAttach, |
970 | PACKET_vRun, | |
a6f3e723 | 971 | PACKET_QStartNoAckMode, |
82f73884 | 972 | PACKET_vKill, |
444abaca DJ |
973 | PACKET_MAX |
974 | }; | |
506fb367 | 975 | |
444abaca | 976 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 MS |
977 | |
978 | static void | |
444abaca DJ |
979 | set_remote_protocol_packet_cmd (char *args, int from_tty, |
980 | struct cmd_list_element *c) | |
dc8acb97 | 981 | { |
444abaca | 982 | struct packet_config *packet; |
dc8acb97 | 983 | |
444abaca DJ |
984 | for (packet = remote_protocol_packets; |
985 | packet < &remote_protocol_packets[PACKET_MAX]; | |
986 | packet++) | |
987 | { | |
988 | if (&packet->detect == c->var) | |
989 | { | |
990 | update_packet_config (packet); | |
991 | return; | |
992 | } | |
993 | } | |
994 | internal_error (__FILE__, __LINE__, "Could not find config for %s", | |
995 | c->name); | |
dc8acb97 MS |
996 | } |
997 | ||
5a2468f5 | 998 | static void |
444abaca DJ |
999 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
1000 | struct cmd_list_element *c, | |
1001 | const char *value) | |
5a2468f5 | 1002 | { |
444abaca | 1003 | struct packet_config *packet; |
5a2468f5 | 1004 | |
444abaca DJ |
1005 | for (packet = remote_protocol_packets; |
1006 | packet < &remote_protocol_packets[PACKET_MAX]; | |
1007 | packet++) | |
1008 | { | |
1009 | if (&packet->detect == c->var) | |
1010 | { | |
1011 | show_packet_config_cmd (packet); | |
1012 | return; | |
1013 | } | |
1014 | } | |
1015 | internal_error (__FILE__, __LINE__, "Could not find config for %s", | |
1016 | c->name); | |
5a2468f5 JM |
1017 | } |
1018 | ||
d471ea57 AC |
1019 | /* Should we try one of the 'Z' requests? */ |
1020 | ||
1021 | enum Z_packet_type | |
1022 | { | |
1023 | Z_PACKET_SOFTWARE_BP, | |
1024 | Z_PACKET_HARDWARE_BP, | |
1025 | Z_PACKET_WRITE_WP, | |
1026 | Z_PACKET_READ_WP, | |
1027 | Z_PACKET_ACCESS_WP, | |
1028 | NR_Z_PACKET_TYPES | |
1029 | }; | |
96baa820 | 1030 | |
d471ea57 | 1031 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 1032 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 1033 | |
7f19b9a2 | 1034 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
1035 | |
1036 | static void | |
fba45db2 KB |
1037 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
1038 | struct cmd_list_element *c) | |
96baa820 | 1039 | { |
d471ea57 AC |
1040 | int i; |
1041 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
1042 | { | |
444abaca DJ |
1043 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
1044 | update_packet_config (&remote_protocol_packets[PACKET_Z0 + i]); | |
d471ea57 | 1045 | } |
96baa820 JM |
1046 | } |
1047 | ||
1048 | static void | |
08546159 AC |
1049 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
1050 | struct cmd_list_element *c, | |
1051 | const char *value) | |
96baa820 | 1052 | { |
d471ea57 AC |
1053 | int i; |
1054 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
1055 | { | |
444abaca | 1056 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 1057 | } |
96baa820 JM |
1058 | } |
1059 | ||
9d1f7ab2 MS |
1060 | /* Should we try the 'ThreadInfo' query packet? |
1061 | ||
1062 | This variable (NOT available to the user: auto-detect only!) | |
1063 | determines whether GDB will use the new, simpler "ThreadInfo" | |
1064 | query or the older, more complex syntax for thread queries. | |
802188a7 | 1065 | This is an auto-detect variable (set to true at each connect, |
9d1f7ab2 MS |
1066 | and set to false when the target fails to recognize it). */ |
1067 | ||
1068 | static int use_threadinfo_query; | |
1069 | static int use_threadextra_query; | |
1070 | ||
23860348 | 1071 | /* Tokens for use by the asynchronous signal handlers for SIGINT. */ |
d5d6fca5 DJ |
1072 | static struct async_signal_handler *sigint_remote_twice_token; |
1073 | static struct async_signal_handler *sigint_remote_token; | |
43ff13b4 | 1074 | |
c906108c SS |
1075 | \f |
1076 | ||
79d7f229 PA |
1077 | static ptid_t magic_null_ptid; |
1078 | static ptid_t not_sent_ptid; | |
1079 | static ptid_t any_thread_ptid; | |
1080 | ||
1081 | /* These are the threads which we last sent to the remote system. The | |
1082 | TID member will be -1 for all or -2 for not sent yet. */ | |
1083 | ||
1084 | static ptid_t general_thread; | |
1085 | static ptid_t continue_thread; | |
c5aa993b | 1086 | |
c906108c SS |
1087 | |
1088 | /* Call this function as a result of | |
1089 | 1) A halt indication (T packet) containing a thread id | |
1090 | 2) A direct query of currthread | |
1091 | 3) Successful execution of set thread | |
1092 | */ | |
1093 | ||
1094 | static void | |
79d7f229 | 1095 | record_currthread (ptid_t currthread) |
c906108c | 1096 | { |
c906108c | 1097 | general_thread = currthread; |
cce74817 | 1098 | |
153ccabd PA |
1099 | /* When connecting to a target remote, or to a target |
1100 | extended-remote which already was debugging an inferior, we may | |
1101 | not know about it yet. Add it before adding its child thread, so | |
1102 | notifications are emitted in a sensible order. */ | |
1103 | if (!in_inferior_list (ptid_get_pid (currthread))) | |
1104 | add_inferior (ptid_get_pid (currthread)); | |
1105 | ||
c906108c SS |
1106 | /* If this is a new thread, add it to GDB's thread list. |
1107 | If we leave it up to WFI to do this, bad things will happen. */ | |
82f73884 PA |
1108 | |
1109 | if (in_thread_list (currthread) && is_exited (currthread)) | |
1110 | { | |
1111 | /* We're seeing an event on a thread id we knew had exited. | |
1112 | This has to be a new thread reusing the old id. Add it. */ | |
1113 | add_thread (currthread); | |
1114 | return; | |
1115 | } | |
1116 | ||
79d7f229 | 1117 | if (!in_thread_list (currthread)) |
c0a2216e PA |
1118 | { |
1119 | if (ptid_equal (pid_to_ptid (ptid_get_pid (currthread)), inferior_ptid)) | |
1120 | { | |
1121 | /* inferior_ptid has no thread member yet. This can happen | |
1122 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
1123 | stub doesn't support qC. This is the first stop reported | |
1124 | after an attach, so this is the main thread. Update the | |
1125 | ptid in the thread list. */ | |
82f73884 PA |
1126 | thread_change_ptid (inferior_ptid, currthread); |
1127 | return; | |
c0a2216e | 1128 | } |
82f73884 PA |
1129 | |
1130 | if (ptid_equal (magic_null_ptid, inferior_ptid)) | |
c0a2216e PA |
1131 | { |
1132 | /* inferior_ptid is not set yet. This can happen with the | |
1133 | vRun -> remote_wait,"TAAthread:" path if the stub | |
1134 | doesn't support qC. This is the first stop reported | |
1135 | after an attach, so this is the main thread. Update the | |
1136 | ptid in the thread list. */ | |
82f73884 PA |
1137 | thread_change_ptid (inferior_ptid, currthread); |
1138 | return; | |
c0a2216e | 1139 | } |
82f73884 PA |
1140 | |
1141 | /* This is really a new thread. Add it. */ | |
1142 | add_thread (currthread); | |
c0a2216e | 1143 | } |
c906108c SS |
1144 | } |
1145 | ||
89be2091 DJ |
1146 | static char *last_pass_packet; |
1147 | ||
1148 | /* If 'QPassSignals' is supported, tell the remote stub what signals | |
1149 | it can simply pass through to the inferior without reporting. */ | |
1150 | ||
1151 | static void | |
1152 | remote_pass_signals (void) | |
1153 | { | |
1154 | if (remote_protocol_packets[PACKET_QPassSignals].support != PACKET_DISABLE) | |
1155 | { | |
1156 | char *pass_packet, *p; | |
1157 | int numsigs = (int) TARGET_SIGNAL_LAST; | |
1158 | int count = 0, i; | |
1159 | ||
1160 | gdb_assert (numsigs < 256); | |
1161 | for (i = 0; i < numsigs; i++) | |
1162 | { | |
1163 | if (signal_stop_state (i) == 0 | |
1164 | && signal_print_state (i) == 0 | |
1165 | && signal_pass_state (i) == 1) | |
1166 | count++; | |
1167 | } | |
1168 | pass_packet = xmalloc (count * 3 + strlen ("QPassSignals:") + 1); | |
1169 | strcpy (pass_packet, "QPassSignals:"); | |
1170 | p = pass_packet + strlen (pass_packet); | |
1171 | for (i = 0; i < numsigs; i++) | |
1172 | { | |
1173 | if (signal_stop_state (i) == 0 | |
1174 | && signal_print_state (i) == 0 | |
1175 | && signal_pass_state (i) == 1) | |
1176 | { | |
1177 | if (i >= 16) | |
1178 | *p++ = tohex (i >> 4); | |
1179 | *p++ = tohex (i & 15); | |
1180 | if (count) | |
1181 | *p++ = ';'; | |
1182 | else | |
1183 | break; | |
1184 | count--; | |
1185 | } | |
1186 | } | |
1187 | *p = 0; | |
1188 | if (!last_pass_packet || strcmp (last_pass_packet, pass_packet)) | |
1189 | { | |
1190 | struct remote_state *rs = get_remote_state (); | |
1191 | char *buf = rs->buf; | |
1192 | ||
1193 | putpkt (pass_packet); | |
1194 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1195 | packet_ok (buf, &remote_protocol_packets[PACKET_QPassSignals]); | |
1196 | if (last_pass_packet) | |
1197 | xfree (last_pass_packet); | |
1198 | last_pass_packet = pass_packet; | |
1199 | } | |
1200 | else | |
1201 | xfree (pass_packet); | |
1202 | } | |
1203 | } | |
1204 | ||
79d7f229 PA |
1205 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
1206 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
1207 | thread. If GEN is set, set the general thread, if not, then set | |
1208 | the step/continue thread. */ | |
c906108c | 1209 | static void |
79d7f229 | 1210 | set_thread (struct ptid ptid, int gen) |
c906108c | 1211 | { |
d01949b6 | 1212 | struct remote_state *rs = get_remote_state (); |
79d7f229 | 1213 | ptid_t state = gen ? general_thread : continue_thread; |
6d820c5c | 1214 | char *buf = rs->buf; |
79d7f229 | 1215 | char *endbuf = rs->buf + get_remote_packet_size (); |
c906108c | 1216 | |
79d7f229 | 1217 | if (ptid_equal (state, ptid)) |
c906108c SS |
1218 | return; |
1219 | ||
79d7f229 PA |
1220 | *buf++ = 'H'; |
1221 | *buf++ = gen ? 'g' : 'c'; | |
1222 | if (ptid_equal (ptid, magic_null_ptid)) | |
1223 | xsnprintf (buf, endbuf - buf, "0"); | |
1224 | else if (ptid_equal (ptid, any_thread_ptid)) | |
1225 | xsnprintf (buf, endbuf - buf, "0"); | |
1226 | else if (ptid_equal (ptid, minus_one_ptid)) | |
1227 | xsnprintf (buf, endbuf - buf, "-1"); | |
1228 | else | |
82f73884 | 1229 | write_ptid (buf, endbuf, ptid); |
79d7f229 | 1230 | putpkt (rs->buf); |
6d820c5c | 1231 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 1232 | if (gen) |
79d7f229 | 1233 | general_thread = ptid; |
c906108c | 1234 | else |
79d7f229 | 1235 | continue_thread = ptid; |
c906108c | 1236 | } |
79d7f229 PA |
1237 | |
1238 | static void | |
1239 | set_general_thread (struct ptid ptid) | |
1240 | { | |
1241 | set_thread (ptid, 1); | |
1242 | } | |
1243 | ||
1244 | static void | |
1245 | set_continue_thread (struct ptid ptid) | |
1246 | { | |
1247 | set_thread (ptid, 0); | |
1248 | } | |
1249 | ||
3c9c4b83 PA |
1250 | /* Change the remote current process. Which thread within the process |
1251 | ends up selected isn't important, as long as it is the same process | |
1252 | as what INFERIOR_PTID points to. | |
1253 | ||
1254 | This comes from that fact that there is no explicit notion of | |
1255 | "selected process" in the protocol. The selected process for | |
1256 | general operations is the process the selected general thread | |
1257 | belongs to. */ | |
1258 | ||
1259 | static void | |
1260 | set_general_process (void) | |
1261 | { | |
1262 | struct remote_state *rs = get_remote_state (); | |
1263 | ||
1264 | /* If the remote can't handle multiple processes, don't bother. */ | |
1265 | if (!remote_multi_process_p (rs)) | |
1266 | return; | |
1267 | ||
1268 | /* We only need to change the remote current thread if it's pointing | |
1269 | at some other process. */ | |
1270 | if (ptid_get_pid (general_thread) != ptid_get_pid (inferior_ptid)) | |
1271 | set_general_thread (inferior_ptid); | |
1272 | } | |
1273 | ||
c906108c | 1274 | \f |
79d7f229 PA |
1275 | /* Return nonzero if the thread PTID is still alive on the remote |
1276 | system. */ | |
c906108c SS |
1277 | |
1278 | static int | |
39f77062 | 1279 | remote_thread_alive (ptid_t ptid) |
c906108c | 1280 | { |
6d820c5c | 1281 | struct remote_state *rs = get_remote_state (); |
79d7f229 | 1282 | int tid = ptid_get_tid (ptid); |
82f73884 | 1283 | char *p, *endp; |
c906108c | 1284 | |
c0a2216e PA |
1285 | if (ptid_equal (ptid, magic_null_ptid)) |
1286 | /* The main thread is always alive. */ | |
1287 | return 1; | |
1288 | ||
1289 | if (ptid_get_pid (ptid) != 0 && ptid_get_tid (ptid) == 0) | |
1290 | /* The main thread is always alive. This can happen after a | |
1291 | vAttach, if the remote side doesn't support | |
1292 | multi-threading. */ | |
1293 | return 1; | |
1294 | ||
82f73884 PA |
1295 | p = rs->buf; |
1296 | endp = rs->buf + get_remote_packet_size (); | |
1297 | ||
1298 | *p++ = 'T'; | |
1299 | write_ptid (p, endp, ptid); | |
1300 | ||
2e9f7625 | 1301 | putpkt (rs->buf); |
6d820c5c | 1302 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1303 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
1304 | } |
1305 | ||
1306 | /* About these extended threadlist and threadinfo packets. They are | |
1307 | variable length packets but, the fields within them are often fixed | |
1308 | length. They are redundent enough to send over UDP as is the | |
1309 | remote protocol in general. There is a matching unit test module | |
1310 | in libstub. */ | |
1311 | ||
cce74817 JM |
1312 | #define OPAQUETHREADBYTES 8 |
1313 | ||
1314 | /* a 64 bit opaque identifier */ | |
1315 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
1316 | ||
23860348 MS |
1317 | /* WARNING: This threadref data structure comes from the remote O.S., |
1318 | libstub protocol encoding, and remote.c. it is not particularly | |
1319 | changable. */ | |
cce74817 JM |
1320 | |
1321 | /* Right now, the internal structure is int. We want it to be bigger. | |
1322 | Plan to fix this. | |
c5aa993b | 1323 | */ |
cce74817 | 1324 | |
23860348 | 1325 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 1326 | |
9d1f7ab2 | 1327 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 1328 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
1329 | |
1330 | struct gdb_ext_thread_info | |
c5aa993b | 1331 | { |
23860348 | 1332 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 1333 | int active; /* Has state interesting to GDB? |
23860348 | 1334 | regs, stack. */ |
2bc416ba | 1335 | char display[256]; /* Brief state display, name, |
cedea757 | 1336 | blocked/suspended. */ |
23860348 | 1337 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 1338 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 1339 | whatever. */ |
c5aa993b | 1340 | }; |
cce74817 JM |
1341 | |
1342 | /* The volume of remote transfers can be limited by submitting | |
1343 | a mask containing bits specifying the desired information. | |
1344 | Use a union of these values as the 'selection' parameter to | |
1345 | get_thread_info. FIXME: Make these TAG names more thread specific. | |
c5aa993b | 1346 | */ |
cce74817 JM |
1347 | |
1348 | #define TAG_THREADID 1 | |
1349 | #define TAG_EXISTS 2 | |
1350 | #define TAG_DISPLAY 4 | |
1351 | #define TAG_THREADNAME 8 | |
c5aa993b | 1352 | #define TAG_MOREDISPLAY 16 |
cce74817 | 1353 | |
23860348 | 1354 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 1355 | |
b2dd6311 | 1356 | char *unpack_varlen_hex (char *buff, ULONGEST *result); |
cce74817 | 1357 | |
a14ed312 | 1358 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 1359 | |
a14ed312 | 1360 | static char *pack_nibble (char *buf, int nibble); |
cce74817 | 1361 | |
23860348 | 1362 | static char *pack_hex_byte (char *pkt, int /* unsigned char */ byte); |
cce74817 | 1363 | |
a14ed312 | 1364 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 1365 | |
a14ed312 | 1366 | static char *pack_int (char *buf, int value); |
cce74817 | 1367 | |
a14ed312 | 1368 | static char *unpack_int (char *buf, int *value); |
cce74817 | 1369 | |
a14ed312 | 1370 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 1371 | |
23860348 | 1372 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 1373 | |
23860348 | 1374 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 1375 | |
23860348 | 1376 | void int_to_threadref (threadref *id, int value); |
cce74817 | 1377 | |
23860348 | 1378 | static int threadref_to_int (threadref *ref); |
cce74817 | 1379 | |
23860348 | 1380 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 1381 | |
23860348 | 1382 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 1383 | |
2bc416ba | 1384 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 1385 | threadref *id); |
cce74817 | 1386 | |
a14ed312 | 1387 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 1388 | threadref *expectedref, |
a14ed312 KB |
1389 | struct gdb_ext_thread_info |
1390 | *info); | |
cce74817 JM |
1391 | |
1392 | ||
2bc416ba | 1393 | static int remote_get_threadinfo (threadref *threadid, |
23860348 | 1394 | int fieldset, /*TAG mask */ |
a14ed312 | 1395 | struct gdb_ext_thread_info *info); |
cce74817 | 1396 | |
a14ed312 KB |
1397 | static char *pack_threadlist_request (char *pkt, int startflag, |
1398 | int threadcount, | |
23860348 | 1399 | threadref *nextthread); |
cce74817 | 1400 | |
a14ed312 KB |
1401 | static int parse_threadlist_response (char *pkt, |
1402 | int result_limit, | |
23860348 | 1403 | threadref *original_echo, |
2bc416ba | 1404 | threadref *resultlist, |
23860348 | 1405 | int *doneflag); |
cce74817 | 1406 | |
a14ed312 | 1407 | static int remote_get_threadlist (int startflag, |
23860348 | 1408 | threadref *nextthread, |
a14ed312 KB |
1409 | int result_limit, |
1410 | int *done, | |
2bc416ba | 1411 | int *result_count, |
23860348 | 1412 | threadref *threadlist); |
cce74817 | 1413 | |
23860348 | 1414 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 1415 | |
a14ed312 KB |
1416 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
1417 | void *context, int looplimit); | |
cce74817 | 1418 | |
23860348 | 1419 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 1420 | |
82f73884 PA |
1421 | |
1422 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
1423 | buffer we're allowed to write to. Returns | |
1424 | BUF+CHARACTERS_WRITTEN. */ | |
1425 | ||
1426 | static char * | |
1427 | write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
1428 | { | |
1429 | int pid, tid; | |
1430 | struct remote_state *rs = get_remote_state (); | |
1431 | ||
1432 | if (remote_multi_process_p (rs)) | |
1433 | { | |
1434 | pid = ptid_get_pid (ptid); | |
1435 | if (pid < 0) | |
1436 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
1437 | else | |
1438 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
1439 | } | |
1440 | tid = ptid_get_tid (ptid); | |
1441 | if (tid < 0) | |
1442 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
1443 | else | |
1444 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
1445 | ||
1446 | return buf; | |
1447 | } | |
1448 | ||
1449 | /* Extract a PTID from BUF. If non-null, OBUF is set to the to one | |
1450 | passed the last parsed char. Returns null_ptid on error. */ | |
1451 | ||
1452 | static ptid_t | |
1453 | read_ptid (char *buf, char **obuf) | |
1454 | { | |
1455 | char *p = buf; | |
1456 | char *pp; | |
1457 | ULONGEST pid = 0, tid = 0; | |
1458 | ptid_t ptid; | |
1459 | ||
1460 | if (*p == 'p') | |
1461 | { | |
1462 | /* Multi-process ptid. */ | |
1463 | pp = unpack_varlen_hex (p + 1, &pid); | |
1464 | if (*pp != '.') | |
1465 | error (_("invalid remote ptid: %s\n"), p); | |
1466 | ||
1467 | p = pp; | |
1468 | pp = unpack_varlen_hex (p + 1, &tid); | |
1469 | if (obuf) | |
1470 | *obuf = pp; | |
1471 | return ptid_build (pid, 0, tid); | |
1472 | } | |
1473 | ||
1474 | /* No multi-process. Just a tid. */ | |
1475 | pp = unpack_varlen_hex (p, &tid); | |
1476 | ||
1477 | /* Since the stub is not sending a process id, then default to | |
1478 | what's in inferior_ptid. */ | |
1479 | pid = ptid_get_pid (inferior_ptid); | |
1480 | ||
1481 | if (obuf) | |
1482 | *obuf = pp; | |
1483 | return ptid_build (pid, 0, tid); | |
1484 | } | |
1485 | ||
23860348 | 1486 | /* Encode 64 bits in 16 chars of hex. */ |
c906108c SS |
1487 | |
1488 | static const char hexchars[] = "0123456789abcdef"; | |
1489 | ||
1490 | static int | |
fba45db2 | 1491 | ishex (int ch, int *val) |
c906108c SS |
1492 | { |
1493 | if ((ch >= 'a') && (ch <= 'f')) | |
1494 | { | |
1495 | *val = ch - 'a' + 10; | |
1496 | return 1; | |
1497 | } | |
1498 | if ((ch >= 'A') && (ch <= 'F')) | |
1499 | { | |
1500 | *val = ch - 'A' + 10; | |
1501 | return 1; | |
1502 | } | |
1503 | if ((ch >= '0') && (ch <= '9')) | |
1504 | { | |
1505 | *val = ch - '0'; | |
1506 | return 1; | |
1507 | } | |
1508 | return 0; | |
1509 | } | |
1510 | ||
1511 | static int | |
fba45db2 | 1512 | stubhex (int ch) |
c906108c SS |
1513 | { |
1514 | if (ch >= 'a' && ch <= 'f') | |
1515 | return ch - 'a' + 10; | |
1516 | if (ch >= '0' && ch <= '9') | |
1517 | return ch - '0'; | |
1518 | if (ch >= 'A' && ch <= 'F') | |
1519 | return ch - 'A' + 10; | |
1520 | return -1; | |
1521 | } | |
1522 | ||
1523 | static int | |
fba45db2 | 1524 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
1525 | { |
1526 | int nibble; | |
1527 | int retval = 0; | |
1528 | ||
1529 | while (fieldlength) | |
1530 | { | |
1531 | nibble = stubhex (*buff++); | |
1532 | retval |= nibble; | |
1533 | fieldlength--; | |
1534 | if (fieldlength) | |
1535 | retval = retval << 4; | |
1536 | } | |
1537 | return retval; | |
1538 | } | |
1539 | ||
1540 | char * | |
fba45db2 | 1541 | unpack_varlen_hex (char *buff, /* packet to parse */ |
b2dd6311 | 1542 | ULONGEST *result) |
c906108c SS |
1543 | { |
1544 | int nibble; | |
d49c44d5 | 1545 | ULONGEST retval = 0; |
c906108c SS |
1546 | |
1547 | while (ishex (*buff, &nibble)) | |
1548 | { | |
1549 | buff++; | |
1550 | retval = retval << 4; | |
1551 | retval |= nibble & 0x0f; | |
1552 | } | |
1553 | *result = retval; | |
1554 | return buff; | |
1555 | } | |
1556 | ||
1557 | static char * | |
fba45db2 | 1558 | unpack_nibble (char *buf, int *val) |
c906108c | 1559 | { |
b7589f7d | 1560 | *val = fromhex (*buf++); |
c906108c SS |
1561 | return buf; |
1562 | } | |
1563 | ||
1564 | static char * | |
fba45db2 | 1565 | pack_nibble (char *buf, int nibble) |
c906108c SS |
1566 | { |
1567 | *buf++ = hexchars[(nibble & 0x0f)]; | |
1568 | return buf; | |
1569 | } | |
1570 | ||
1571 | static char * | |
fba45db2 | 1572 | pack_hex_byte (char *pkt, int byte) |
c906108c SS |
1573 | { |
1574 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
1575 | *pkt++ = hexchars[(byte & 0xf)]; | |
1576 | return pkt; | |
1577 | } | |
1578 | ||
1579 | static char * | |
fba45db2 | 1580 | unpack_byte (char *buf, int *value) |
c906108c SS |
1581 | { |
1582 | *value = stub_unpack_int (buf, 2); | |
1583 | return buf + 2; | |
1584 | } | |
1585 | ||
1586 | static char * | |
fba45db2 | 1587 | pack_int (char *buf, int value) |
c906108c SS |
1588 | { |
1589 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
1590 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
1591 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
1592 | buf = pack_hex_byte (buf, (value & 0xff)); | |
1593 | return buf; | |
1594 | } | |
1595 | ||
1596 | static char * | |
fba45db2 | 1597 | unpack_int (char *buf, int *value) |
c906108c SS |
1598 | { |
1599 | *value = stub_unpack_int (buf, 8); | |
1600 | return buf + 8; | |
1601 | } | |
1602 | ||
23860348 | 1603 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 1604 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
1605 | |
1606 | static char * | |
fba45db2 | 1607 | pack_string (char *pkt, char *string) |
c906108c SS |
1608 | { |
1609 | char ch; | |
1610 | int len; | |
1611 | ||
1612 | len = strlen (string); | |
1613 | if (len > 200) | |
23860348 | 1614 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
1615 | pkt = pack_hex_byte (pkt, len); |
1616 | while (len-- > 0) | |
1617 | { | |
1618 | ch = *string++; | |
1619 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 1620 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
1621 | *pkt++ = ch; |
1622 | } | |
1623 | return pkt; | |
1624 | } | |
1625 | #endif /* 0 (unused) */ | |
1626 | ||
1627 | static char * | |
fba45db2 | 1628 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
1629 | { |
1630 | while (length--) | |
1631 | *dest++ = *src++; | |
1632 | *dest = '\0'; | |
1633 | return src; | |
1634 | } | |
1635 | ||
1636 | static char * | |
fba45db2 | 1637 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
1638 | { |
1639 | char *limit; | |
1640 | unsigned char *altid; | |
1641 | ||
1642 | altid = (unsigned char *) id; | |
1643 | limit = pkt + BUF_THREAD_ID_SIZE; | |
1644 | while (pkt < limit) | |
1645 | pkt = pack_hex_byte (pkt, *altid++); | |
1646 | return pkt; | |
1647 | } | |
1648 | ||
1649 | ||
1650 | static char * | |
fba45db2 | 1651 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
1652 | { |
1653 | char *altref; | |
1654 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
1655 | int x, y; | |
1656 | ||
1657 | altref = (char *) id; | |
1658 | ||
1659 | while (inbuf < limit) | |
1660 | { | |
1661 | x = stubhex (*inbuf++); | |
1662 | y = stubhex (*inbuf++); | |
1663 | *altref++ = (x << 4) | y; | |
1664 | } | |
1665 | return inbuf; | |
1666 | } | |
1667 | ||
1668 | /* Externally, threadrefs are 64 bits but internally, they are still | |
1669 | ints. This is due to a mismatch of specifications. We would like | |
1670 | to use 64bit thread references internally. This is an adapter | |
1671 | function. */ | |
1672 | ||
1673 | void | |
fba45db2 | 1674 | int_to_threadref (threadref *id, int value) |
c906108c SS |
1675 | { |
1676 | unsigned char *scan; | |
1677 | ||
1678 | scan = (unsigned char *) id; | |
1679 | { | |
1680 | int i = 4; | |
1681 | while (i--) | |
1682 | *scan++ = 0; | |
1683 | } | |
1684 | *scan++ = (value >> 24) & 0xff; | |
1685 | *scan++ = (value >> 16) & 0xff; | |
1686 | *scan++ = (value >> 8) & 0xff; | |
1687 | *scan++ = (value & 0xff); | |
1688 | } | |
1689 | ||
1690 | static int | |
fba45db2 | 1691 | threadref_to_int (threadref *ref) |
c906108c SS |
1692 | { |
1693 | int i, value = 0; | |
1694 | unsigned char *scan; | |
1695 | ||
cfd77fa1 | 1696 | scan = *ref; |
c906108c SS |
1697 | scan += 4; |
1698 | i = 4; | |
1699 | while (i-- > 0) | |
1700 | value = (value << 8) | ((*scan++) & 0xff); | |
1701 | return value; | |
1702 | } | |
1703 | ||
1704 | static void | |
fba45db2 | 1705 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
1706 | { |
1707 | int i; | |
1708 | unsigned char *csrc, *cdest; | |
1709 | ||
1710 | csrc = (unsigned char *) src; | |
1711 | cdest = (unsigned char *) dest; | |
1712 | i = 8; | |
1713 | while (i--) | |
1714 | *cdest++ = *csrc++; | |
1715 | } | |
1716 | ||
1717 | static int | |
fba45db2 | 1718 | threadmatch (threadref *dest, threadref *src) |
c906108c | 1719 | { |
23860348 | 1720 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
1721 | #if 0 |
1722 | unsigned char *srcp, *destp; | |
1723 | int i, result; | |
1724 | srcp = (char *) src; | |
1725 | destp = (char *) dest; | |
1726 | ||
1727 | result = 1; | |
1728 | while (i-- > 0) | |
1729 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
1730 | return result; | |
1731 | #endif | |
1732 | return 1; | |
1733 | } | |
1734 | ||
1735 | /* | |
c5aa993b JM |
1736 | threadid:1, # always request threadid |
1737 | context_exists:2, | |
1738 | display:4, | |
1739 | unique_name:8, | |
1740 | more_display:16 | |
1741 | */ | |
c906108c SS |
1742 | |
1743 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
1744 | ||
1745 | static char * | |
fba45db2 | 1746 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 1747 | { |
23860348 MS |
1748 | *pkt++ = 'q'; /* Info Query */ |
1749 | *pkt++ = 'P'; /* process or thread info */ | |
1750 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 1751 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 1752 | *pkt = '\0'; /* terminate */ |
c906108c SS |
1753 | return pkt; |
1754 | } | |
1755 | ||
23860348 | 1756 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 1757 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 1758 | add more fields as time goes by. */ |
c906108c | 1759 | |
23860348 | 1760 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 1761 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 1762 | fetch registers and its stack? */ |
c5aa993b | 1763 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 1764 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 1765 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 1766 | the process. */ |
c906108c SS |
1767 | |
1768 | static int | |
fba45db2 KB |
1769 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
1770 | struct gdb_ext_thread_info *info) | |
c906108c | 1771 | { |
d01949b6 | 1772 | struct remote_state *rs = get_remote_state (); |
c906108c | 1773 | int mask, length; |
cfd77fa1 | 1774 | int tag; |
c906108c | 1775 | threadref ref; |
6d820c5c | 1776 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
1777 | int retval = 1; |
1778 | ||
23860348 | 1779 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
1780 | info->active = 0; |
1781 | info->display[0] = '\0'; | |
1782 | info->shortname[0] = '\0'; | |
1783 | info->more_display[0] = '\0'; | |
1784 | ||
23860348 MS |
1785 | /* Assume the characters indicating the packet type have been |
1786 | stripped. */ | |
c906108c SS |
1787 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
1788 | pkt = unpack_threadid (pkt, &ref); | |
1789 | ||
1790 | if (mask == 0) | |
8a3fe4f8 | 1791 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 1792 | if (!threadmatch (&ref, expectedref)) |
23860348 | 1793 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 1794 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
1795 | return 0; |
1796 | } | |
1797 | copy_threadref (&info->threadid, &ref); | |
1798 | ||
23860348 | 1799 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 1800 | |
23860348 MS |
1801 | /* Packets are terminated with nulls. */ |
1802 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
1803 | { |
1804 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
1805 | pkt = unpack_byte (pkt, &length); /* length */ |
1806 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 1807 | { |
8a3fe4f8 | 1808 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
1809 | retval = 0; |
1810 | break; | |
1811 | } | |
1812 | if (tag == TAG_THREADID) | |
1813 | { | |
1814 | if (length != 16) | |
1815 | { | |
8a3fe4f8 | 1816 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
1817 | retval = 0; |
1818 | break; | |
1819 | } | |
1820 | pkt = unpack_threadid (pkt, &ref); | |
1821 | mask = mask & ~TAG_THREADID; | |
1822 | continue; | |
1823 | } | |
1824 | if (tag == TAG_EXISTS) | |
1825 | { | |
1826 | info->active = stub_unpack_int (pkt, length); | |
1827 | pkt += length; | |
1828 | mask = mask & ~(TAG_EXISTS); | |
1829 | if (length > 8) | |
1830 | { | |
8a3fe4f8 | 1831 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
1832 | retval = 0; |
1833 | break; | |
1834 | } | |
1835 | continue; | |
1836 | } | |
1837 | if (tag == TAG_THREADNAME) | |
1838 | { | |
1839 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
1840 | mask = mask & ~TAG_THREADNAME; | |
1841 | continue; | |
1842 | } | |
1843 | if (tag == TAG_DISPLAY) | |
1844 | { | |
1845 | pkt = unpack_string (pkt, &info->display[0], length); | |
1846 | mask = mask & ~TAG_DISPLAY; | |
1847 | continue; | |
1848 | } | |
1849 | if (tag == TAG_MOREDISPLAY) | |
1850 | { | |
1851 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
1852 | mask = mask & ~TAG_MOREDISPLAY; | |
1853 | continue; | |
1854 | } | |
8a3fe4f8 | 1855 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 1856 | break; /* Not a tag we know about. */ |
c906108c SS |
1857 | } |
1858 | return retval; | |
1859 | } | |
1860 | ||
1861 | static int | |
fba45db2 KB |
1862 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
1863 | struct gdb_ext_thread_info *info) | |
c906108c | 1864 | { |
d01949b6 | 1865 | struct remote_state *rs = get_remote_state (); |
c906108c | 1866 | int result; |
c906108c | 1867 | |
2e9f7625 DJ |
1868 | pack_threadinfo_request (rs->buf, fieldset, threadid); |
1869 | putpkt (rs->buf); | |
6d820c5c | 1870 | getpkt (&rs->buf, &rs->buf_size, 0); |
3084dd77 PA |
1871 | |
1872 | if (rs->buf[0] == '\0') | |
1873 | return 0; | |
1874 | ||
2e9f7625 | 1875 | result = remote_unpack_thread_info_response (rs->buf + 2, |
23860348 | 1876 | threadid, info); |
c906108c SS |
1877 | return result; |
1878 | } | |
1879 | ||
c906108c SS |
1880 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
1881 | ||
1882 | static char * | |
fba45db2 KB |
1883 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
1884 | threadref *nextthread) | |
c906108c SS |
1885 | { |
1886 | *pkt++ = 'q'; /* info query packet */ | |
1887 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 1888 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
1889 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
1890 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
1891 | *pkt = '\0'; | |
1892 | return pkt; | |
1893 | } | |
1894 | ||
1895 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
1896 | ||
1897 | static int | |
fba45db2 KB |
1898 | parse_threadlist_response (char *pkt, int result_limit, |
1899 | threadref *original_echo, threadref *resultlist, | |
1900 | int *doneflag) | |
c906108c | 1901 | { |
d01949b6 | 1902 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1903 | char *limit; |
1904 | int count, resultcount, done; | |
1905 | ||
1906 | resultcount = 0; | |
1907 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 1908 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 1909 | /* done parse past here */ |
c906108c SS |
1910 | pkt = unpack_byte (pkt, &count); /* count field */ |
1911 | pkt = unpack_nibble (pkt, &done); | |
1912 | /* The first threadid is the argument threadid. */ | |
1913 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
1914 | while ((count-- > 0) && (pkt < limit)) | |
1915 | { | |
1916 | pkt = unpack_threadid (pkt, resultlist++); | |
1917 | if (resultcount++ >= result_limit) | |
1918 | break; | |
1919 | } | |
1920 | if (doneflag) | |
1921 | *doneflag = done; | |
1922 | return resultcount; | |
1923 | } | |
1924 | ||
1925 | static int | |
fba45db2 KB |
1926 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
1927 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 1928 | { |
d01949b6 | 1929 | struct remote_state *rs = get_remote_state (); |
c906108c | 1930 | static threadref echo_nextthread; |
c906108c SS |
1931 | int result = 1; |
1932 | ||
23860348 | 1933 | /* Trancate result limit to be smaller than the packet size. */ |
ea9c271d DJ |
1934 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) >= get_remote_packet_size ()) |
1935 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; | |
c906108c | 1936 | |
6d820c5c DJ |
1937 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
1938 | putpkt (rs->buf); | |
1939 | getpkt (&rs->buf, &rs->buf_size, 0); | |
c906108c | 1940 | |
d8f2712d VP |
1941 | if (*rs->buf == '\0') |
1942 | *result_count = 0; | |
1943 | else | |
1944 | *result_count = | |
1945 | parse_threadlist_response (rs->buf + 2, result_limit, &echo_nextthread, | |
1946 | threadlist, done); | |
c906108c SS |
1947 | |
1948 | if (!threadmatch (&echo_nextthread, nextthread)) | |
1949 | { | |
23860348 MS |
1950 | /* FIXME: This is a good reason to drop the packet. */ |
1951 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
1952 | /* Possabilities : |
1953 | retransmit immediatly - race conditions | |
1954 | retransmit after timeout - yes | |
1955 | exit | |
1956 | wait for packet, then exit | |
1957 | */ | |
8a3fe4f8 | 1958 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 1959 | return 0; /* I choose simply exiting. */ |
c906108c SS |
1960 | } |
1961 | if (*result_count <= 0) | |
1962 | { | |
1963 | if (*done != 1) | |
1964 | { | |
8a3fe4f8 | 1965 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
1966 | result = 0; |
1967 | } | |
1968 | return result; /* break; */ | |
1969 | } | |
1970 | if (*result_count > result_limit) | |
1971 | { | |
1972 | *result_count = 0; | |
8a3fe4f8 | 1973 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
1974 | return 0; |
1975 | } | |
1976 | return result; | |
1977 | } | |
1978 | ||
23860348 MS |
1979 | /* This is the interface between remote and threads, remotes upper |
1980 | interface. */ | |
c906108c SS |
1981 | |
1982 | /* remote_find_new_threads retrieves the thread list and for each | |
1983 | thread in the list, looks up the thread in GDB's internal list, | |
79d7f229 | 1984 | adding the thread if it does not already exist. This involves |
c906108c SS |
1985 | getting partial thread lists from the remote target so, polling the |
1986 | quit_flag is required. */ | |
1987 | ||
1988 | ||
23860348 | 1989 | /* About this many threadisds fit in a packet. */ |
c906108c SS |
1990 | |
1991 | #define MAXTHREADLISTRESULTS 32 | |
1992 | ||
1993 | static int | |
fba45db2 KB |
1994 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
1995 | int looplimit) | |
c906108c SS |
1996 | { |
1997 | int done, i, result_count; | |
1998 | int startflag = 1; | |
1999 | int result = 1; | |
2000 | int loopcount = 0; | |
2001 | static threadref nextthread; | |
2002 | static threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
2003 | ||
2004 | done = 0; | |
2005 | while (!done) | |
2006 | { | |
2007 | if (loopcount++ > looplimit) | |
2008 | { | |
2009 | result = 0; | |
8a3fe4f8 | 2010 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
2011 | break; |
2012 | } | |
2013 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS, | |
2014 | &done, &result_count, resultthreadlist)) | |
2015 | { | |
2016 | result = 0; | |
2017 | break; | |
2018 | } | |
23860348 | 2019 | /* Clear for later iterations. */ |
c906108c SS |
2020 | startflag = 0; |
2021 | /* Setup to resume next batch of thread references, set nextthread. */ | |
2022 | if (result_count >= 1) | |
2023 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |
2024 | i = 0; | |
2025 | while (result_count--) | |
2026 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |
2027 | break; | |
2028 | } | |
2029 | return result; | |
2030 | } | |
2031 | ||
2032 | static int | |
fba45db2 | 2033 | remote_newthread_step (threadref *ref, void *context) |
c906108c | 2034 | { |
79d7f229 PA |
2035 | int pid = ptid_get_pid (inferior_ptid); |
2036 | ptid_t ptid = ptid_build (pid, 0, threadref_to_int (ref)); | |
39f77062 KB |
2037 | |
2038 | if (!in_thread_list (ptid)) | |
2039 | add_thread (ptid); | |
c906108c SS |
2040 | return 1; /* continue iterator */ |
2041 | } | |
2042 | ||
2043 | #define CRAZY_MAX_THREADS 1000 | |
2044 | ||
39f77062 KB |
2045 | static ptid_t |
2046 | remote_current_thread (ptid_t oldpid) | |
c906108c | 2047 | { |
d01949b6 | 2048 | struct remote_state *rs = get_remote_state (); |
79d7f229 PA |
2049 | char *p = rs->buf; |
2050 | int tid; | |
2051 | int pid; | |
c906108c SS |
2052 | |
2053 | putpkt ("qC"); | |
6d820c5c | 2054 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2055 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
82f73884 | 2056 | return read_ptid (&rs->buf[2], NULL); |
c906108c SS |
2057 | else |
2058 | return oldpid; | |
2059 | } | |
2060 | ||
802188a7 RM |
2061 | /* Find new threads for info threads command. |
2062 | * Original version, using John Metzler's thread protocol. | |
9d1f7ab2 | 2063 | */ |
cce74817 JM |
2064 | |
2065 | static void | |
fba45db2 | 2066 | remote_find_new_threads (void) |
c906108c | 2067 | { |
c5aa993b JM |
2068 | remote_threadlist_iterator (remote_newthread_step, 0, |
2069 | CRAZY_MAX_THREADS); | |
c906108c SS |
2070 | } |
2071 | ||
9d1f7ab2 MS |
2072 | /* |
2073 | * Find all threads for info threads command. | |
2074 | * Uses new thread protocol contributed by Cisco. | |
2075 | * Falls back and attempts to use the older method (above) | |
2076 | * if the target doesn't respond to the new method. | |
2077 | */ | |
2078 | ||
0f71a2f6 JM |
2079 | static void |
2080 | remote_threads_info (void) | |
2081 | { | |
d01949b6 | 2082 | struct remote_state *rs = get_remote_state (); |
085dd6e6 | 2083 | char *bufp; |
79d7f229 | 2084 | ptid_t new_thread; |
0f71a2f6 JM |
2085 | |
2086 | if (remote_desc == 0) /* paranoia */ | |
8a3fe4f8 | 2087 | error (_("Command can only be used when connected to the remote target.")); |
0f71a2f6 | 2088 | |
9d1f7ab2 MS |
2089 | if (use_threadinfo_query) |
2090 | { | |
2091 | putpkt ("qfThreadInfo"); | |
6d820c5c | 2092 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2093 | bufp = rs->buf; |
9d1f7ab2 | 2094 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 2095 | { |
9d1f7ab2 MS |
2096 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
2097 | { | |
2098 | do | |
2099 | { | |
82f73884 PA |
2100 | new_thread = read_ptid (bufp, &bufp); |
2101 | if (!ptid_equal (new_thread, null_ptid) | |
153ccabd PA |
2102 | && (!in_thread_list (new_thread) |
2103 | || is_exited (new_thread))) | |
82f73884 | 2104 | { |
153ccabd PA |
2105 | /* When connected to a multi-process aware stub, |
2106 | "info threads" may show up threads of | |
2107 | inferiors we didn't know about yet. Add them | |
2108 | now, and before adding any of its child | |
2109 | threads, so notifications are emitted in a | |
2110 | sensible order. */ | |
82f73884 | 2111 | if (!in_inferior_list (ptid_get_pid (new_thread))) |
82f73884 PA |
2112 | add_inferior (ptid_get_pid (new_thread)); |
2113 | ||
2114 | add_thread (new_thread); | |
2115 | } | |
9d1f7ab2 MS |
2116 | } |
2117 | while (*bufp++ == ','); /* comma-separated list */ | |
2118 | putpkt ("qsThreadInfo"); | |
6d820c5c | 2119 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2120 | bufp = rs->buf; |
9d1f7ab2 MS |
2121 | } |
2122 | return; /* done */ | |
2123 | } | |
2124 | } | |
2125 | ||
23860348 | 2126 | /* Else fall back to old method based on jmetzler protocol. */ |
9d1f7ab2 MS |
2127 | use_threadinfo_query = 0; |
2128 | remote_find_new_threads (); | |
2129 | return; | |
2130 | } | |
2131 | ||
802188a7 | 2132 | /* |
9d1f7ab2 MS |
2133 | * Collect a descriptive string about the given thread. |
2134 | * The target may say anything it wants to about the thread | |
2135 | * (typically info about its blocked / runnable state, name, etc.). | |
2136 | * This string will appear in the info threads display. | |
802188a7 | 2137 | * |
9d1f7ab2 MS |
2138 | * Optional: targets are not required to implement this function. |
2139 | */ | |
2140 | ||
2141 | static char * | |
2142 | remote_threads_extra_info (struct thread_info *tp) | |
2143 | { | |
d01949b6 | 2144 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
2145 | int result; |
2146 | int set; | |
2147 | threadref id; | |
2148 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 2149 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
2150 | int n = 0; /* position in display_buf */ |
2151 | ||
2152 | if (remote_desc == 0) /* paranoia */ | |
8e65ff28 | 2153 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 2154 | _("remote_threads_extra_info")); |
9d1f7ab2 | 2155 | |
60e569b9 PA |
2156 | if (ptid_equal (tp->ptid, magic_null_ptid) |
2157 | || (ptid_get_pid (tp->ptid) != 0 && ptid_get_tid (tp->ptid) == 0)) | |
2158 | /* This is the main thread which was added by GDB. The remote | |
2159 | server doesn't know about it. */ | |
2160 | return NULL; | |
2161 | ||
9d1f7ab2 MS |
2162 | if (use_threadextra_query) |
2163 | { | |
82f73884 PA |
2164 | char *b = rs->buf; |
2165 | char *endb = rs->buf + get_remote_packet_size (); | |
2166 | ||
2167 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
2168 | b += strlen (b); | |
2169 | write_ptid (b, endb, tp->ptid); | |
2170 | ||
2e9f7625 | 2171 | putpkt (rs->buf); |
6d820c5c | 2172 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2173 | if (rs->buf[0] != 0) |
9d1f7ab2 | 2174 | { |
2e9f7625 DJ |
2175 | n = min (strlen (rs->buf) / 2, sizeof (display_buf)); |
2176 | result = hex2bin (rs->buf, (gdb_byte *) display_buf, n); | |
30559e10 | 2177 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
2178 | return display_buf; |
2179 | } | |
0f71a2f6 | 2180 | } |
9d1f7ab2 MS |
2181 | |
2182 | /* If the above query fails, fall back to the old method. */ | |
2183 | use_threadextra_query = 0; | |
2184 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
2185 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
79d7f229 | 2186 | int_to_threadref (&id, ptid_get_tid (tp->ptid)); |
9d1f7ab2 MS |
2187 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
2188 | if (threadinfo.active) | |
0f71a2f6 | 2189 | { |
9d1f7ab2 | 2190 | if (*threadinfo.shortname) |
2bc416ba | 2191 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
ecbc58df | 2192 | " Name: %s,", threadinfo.shortname); |
9d1f7ab2 | 2193 | if (*threadinfo.display) |
2bc416ba | 2194 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 2195 | " State: %s,", threadinfo.display); |
9d1f7ab2 | 2196 | if (*threadinfo.more_display) |
2bc416ba | 2197 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 2198 | " Priority: %s", threadinfo.more_display); |
9d1f7ab2 MS |
2199 | |
2200 | if (n > 0) | |
c5aa993b | 2201 | { |
23860348 | 2202 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
2203 | if (',' == display_buf[n-1]) |
2204 | display_buf[n-1] = ' '; | |
2205 | return display_buf; | |
c5aa993b | 2206 | } |
0f71a2f6 | 2207 | } |
9d1f7ab2 | 2208 | return NULL; |
0f71a2f6 | 2209 | } |
c906108c | 2210 | \f |
c5aa993b | 2211 | |
24b06219 | 2212 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
2213 | |
2214 | static void | |
fba45db2 | 2215 | extended_remote_restart (void) |
c906108c | 2216 | { |
d01949b6 | 2217 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2218 | |
2219 | /* Send the restart command; for reasons I don't understand the | |
2220 | remote side really expects a number after the "R". */ | |
ea9c271d | 2221 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); |
6d820c5c | 2222 | putpkt (rs->buf); |
c906108c | 2223 | |
ad9a8f3f | 2224 | remote_fileio_reset (); |
c906108c SS |
2225 | } |
2226 | \f | |
2227 | /* Clean up connection to a remote debugger. */ | |
2228 | ||
c906108c | 2229 | static void |
fba45db2 | 2230 | remote_close (int quitting) |
c906108c SS |
2231 | { |
2232 | if (remote_desc) | |
ce5ce7ed PA |
2233 | { |
2234 | /* Unregister the file descriptor from the event loop. */ | |
2235 | if (target_is_async_p ()) | |
2236 | target_async (NULL, 0); | |
2237 | serial_close (remote_desc); | |
2238 | remote_desc = NULL; | |
2239 | } | |
2240 | ||
2241 | /* Make sure we don't leave the async SIGINT signal handler | |
2242 | installed. */ | |
2243 | signal (SIGINT, handle_sigint); | |
2244 | ||
2245 | /* We don't have a connection to the remote stub anymore. Get rid | |
2246 | of all the inferiors and their threads we were controlling. */ | |
2247 | discard_all_inferiors (); | |
2248 | ||
2249 | generic_mourn_inferior (); | |
c906108c SS |
2250 | } |
2251 | ||
23860348 | 2252 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
2253 | |
2254 | static void | |
fba45db2 | 2255 | get_offsets (void) |
c906108c | 2256 | { |
d01949b6 | 2257 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 2258 | char *buf; |
085dd6e6 | 2259 | char *ptr; |
31d99776 DJ |
2260 | int lose, num_segments = 0, do_sections, do_segments; |
2261 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
c906108c | 2262 | struct section_offsets *offs; |
31d99776 DJ |
2263 | struct symfile_segment_data *data; |
2264 | ||
2265 | if (symfile_objfile == NULL) | |
2266 | return; | |
c906108c SS |
2267 | |
2268 | putpkt ("qOffsets"); | |
6d820c5c | 2269 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2270 | buf = rs->buf; |
c906108c SS |
2271 | |
2272 | if (buf[0] == '\000') | |
2273 | return; /* Return silently. Stub doesn't support | |
23860348 | 2274 | this command. */ |
c906108c SS |
2275 | if (buf[0] == 'E') |
2276 | { | |
8a3fe4f8 | 2277 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
2278 | return; |
2279 | } | |
2280 | ||
2281 | /* Pick up each field in turn. This used to be done with scanf, but | |
2282 | scanf will make trouble if CORE_ADDR size doesn't match | |
2283 | conversion directives correctly. The following code will work | |
2284 | with any size of CORE_ADDR. */ | |
2285 | text_addr = data_addr = bss_addr = 0; | |
2286 | ptr = buf; | |
2287 | lose = 0; | |
2288 | ||
2289 | if (strncmp (ptr, "Text=", 5) == 0) | |
2290 | { | |
2291 | ptr += 5; | |
2292 | /* Don't use strtol, could lose on big values. */ | |
2293 | while (*ptr && *ptr != ';') | |
2294 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 2295 | |
31d99776 DJ |
2296 | if (strncmp (ptr, ";Data=", 6) == 0) |
2297 | { | |
2298 | ptr += 6; | |
2299 | while (*ptr && *ptr != ';') | |
2300 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
2301 | } | |
2302 | else | |
2303 | lose = 1; | |
2304 | ||
2305 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
2306 | { | |
2307 | ptr += 5; | |
2308 | while (*ptr && *ptr != ';') | |
2309 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 2310 | |
31d99776 DJ |
2311 | if (bss_addr != data_addr) |
2312 | warning (_("Target reported unsupported offsets: %s"), buf); | |
2313 | } | |
2314 | else | |
2315 | lose = 1; | |
2316 | } | |
2317 | else if (strncmp (ptr, "TextSeg=", 8) == 0) | |
c906108c | 2318 | { |
31d99776 DJ |
2319 | ptr += 8; |
2320 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 2321 | while (*ptr && *ptr != ';') |
31d99776 DJ |
2322 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
2323 | num_segments = 1; | |
2324 | ||
2325 | if (strncmp (ptr, ";DataSeg=", 9) == 0) | |
2326 | { | |
2327 | ptr += 9; | |
2328 | while (*ptr && *ptr != ';') | |
2329 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
2330 | num_segments++; | |
2331 | } | |
c906108c SS |
2332 | } |
2333 | else | |
2334 | lose = 1; | |
2335 | ||
2336 | if (lose) | |
8a3fe4f8 | 2337 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
2338 | else if (*ptr != '\0') |
2339 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 2340 | |
802188a7 | 2341 | offs = ((struct section_offsets *) |
a39a16c4 | 2342 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 2343 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 2344 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 2345 | |
31d99776 DJ |
2346 | data = get_symfile_segment_data (symfile_objfile->obfd); |
2347 | do_segments = (data != NULL); | |
2348 | do_sections = num_segments == 0; | |
c906108c | 2349 | |
28c32713 | 2350 | if (num_segments > 0) |
31d99776 | 2351 | { |
31d99776 DJ |
2352 | segments[0] = text_addr; |
2353 | segments[1] = data_addr; | |
2354 | } | |
28c32713 JB |
2355 | /* If we have two segments, we can still try to relocate everything |
2356 | by assuming that the .text and .data offsets apply to the whole | |
2357 | text and data segments. Convert the offsets given in the packet | |
2358 | to base addresses for symfile_map_offsets_to_segments. */ | |
2359 | else if (data && data->num_segments == 2) | |
2360 | { | |
2361 | segments[0] = data->segment_bases[0] + text_addr; | |
2362 | segments[1] = data->segment_bases[1] + data_addr; | |
2363 | num_segments = 2; | |
2364 | } | |
8d385431 DJ |
2365 | /* If the object file has only one segment, assume that it is text |
2366 | rather than data; main programs with no writable data are rare, | |
2367 | but programs with no code are useless. Of course the code might | |
2368 | have ended up in the data segment... to detect that we would need | |
2369 | the permissions here. */ | |
2370 | else if (data && data->num_segments == 1) | |
2371 | { | |
2372 | segments[0] = data->segment_bases[0] + text_addr; | |
2373 | num_segments = 1; | |
2374 | } | |
28c32713 JB |
2375 | /* There's no way to relocate by segment. */ |
2376 | else | |
2377 | do_segments = 0; | |
31d99776 DJ |
2378 | |
2379 | if (do_segments) | |
2380 | { | |
2381 | int ret = symfile_map_offsets_to_segments (symfile_objfile->obfd, data, | |
2382 | offs, num_segments, segments); | |
2383 | ||
2384 | if (ret == 0 && !do_sections) | |
2385 | error (_("Can not handle qOffsets TextSeg response with this symbol file")); | |
2386 | ||
2387 | if (ret > 0) | |
2388 | do_sections = 0; | |
2389 | } | |
c906108c | 2390 | |
9ef895d6 DJ |
2391 | if (data) |
2392 | free_symfile_segment_data (data); | |
31d99776 DJ |
2393 | |
2394 | if (do_sections) | |
2395 | { | |
2396 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; | |
2397 | ||
2398 | /* This is a temporary kludge to force data and bss to use the same offsets | |
2399 | because that's what nlmconv does now. The real solution requires changes | |
2400 | to the stub and remote.c that I don't have time to do right now. */ | |
2401 | ||
2402 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; | |
2403 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
2404 | } | |
c906108c SS |
2405 | |
2406 | objfile_relocate (symfile_objfile, offs); | |
2407 | } | |
2408 | ||
8621d6a9 | 2409 | /* Stub for catch_exception. */ |
0f71a2f6 | 2410 | |
2d717e4f DJ |
2411 | struct start_remote_args |
2412 | { | |
2413 | int from_tty; | |
2414 | ||
2415 | /* The current target. */ | |
2416 | struct target_ops *target; | |
2417 | ||
2418 | /* Non-zero if this is an extended-remote target. */ | |
2419 | int extended_p; | |
2420 | }; | |
2421 | ||
9cbc821d | 2422 | static void |
2d717e4f | 2423 | remote_start_remote (struct ui_out *uiout, void *opaque) |
c906108c | 2424 | { |
2d717e4f | 2425 | struct start_remote_args *args = opaque; |
c8d104ad PA |
2426 | struct remote_state *rs = get_remote_state (); |
2427 | struct packet_config *noack_config; | |
2d717e4f | 2428 | char *wait_status = NULL; |
8621d6a9 | 2429 | |
23860348 | 2430 | immediate_quit++; /* Allow user to interrupt it. */ |
c906108c | 2431 | |
c8d104ad PA |
2432 | /* Ack any packet which the remote side has already sent. */ |
2433 | serial_write (remote_desc, "+", 1); | |
2434 | ||
2435 | /* The first packet we send to the target is the optional "supported | |
2436 | packets" request. If the target can answer this, it will tell us | |
2437 | which later probes to skip. */ | |
2438 | remote_query_supported (); | |
2439 | ||
2440 | /* Next, we possibly activate noack mode. | |
2441 | ||
2442 | If the QStartNoAckMode packet configuration is set to AUTO, | |
2443 | enable noack mode if the stub reported a wish for it with | |
2444 | qSupported. | |
2445 | ||
2446 | If set to TRUE, then enable noack mode even if the stub didn't | |
2447 | report it in qSupported. If the stub doesn't reply OK, the | |
2448 | session ends with an error. | |
2449 | ||
2450 | If FALSE, then don't activate noack mode, regardless of what the | |
2451 | stub claimed should be the default with qSupported. */ | |
2452 | ||
2453 | noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode]; | |
2454 | ||
2455 | if (noack_config->detect == AUTO_BOOLEAN_TRUE | |
2456 | || (noack_config->detect == AUTO_BOOLEAN_AUTO | |
2457 | && noack_config->support == PACKET_ENABLE)) | |
2458 | { | |
2459 | putpkt ("QStartNoAckMode"); | |
2460 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2461 | if (packet_ok (rs->buf, noack_config) == PACKET_OK) | |
2462 | rs->noack_mode = 1; | |
2463 | } | |
2464 | ||
5fe04517 PA |
2465 | if (args->extended_p) |
2466 | { | |
2467 | /* Tell the remote that we are using the extended protocol. */ | |
2468 | putpkt ("!"); | |
2469 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2470 | } | |
2471 | ||
c8d104ad PA |
2472 | /* Next, if the target can specify a description, read it. We do |
2473 | this before anything involving memory or registers. */ | |
2474 | target_find_description (); | |
2475 | ||
2d717e4f DJ |
2476 | /* Check whether the target is running now. */ |
2477 | putpkt ("?"); | |
2478 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2479 | ||
2480 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') | |
2481 | { | |
2482 | if (args->extended_p) | |
2483 | { | |
2484 | /* We're connected, but not running. Drop out before we | |
2485 | call start_remote. */ | |
2486 | target_mark_exited (args->target); | |
2487 | return; | |
2488 | } | |
2489 | else | |
2490 | error (_("The target is not running (try extended-remote?)")); | |
2491 | } | |
2492 | else | |
2493 | { | |
2494 | if (args->extended_p) | |
2495 | target_mark_running (args->target); | |
2496 | ||
2497 | /* Save the reply for later. */ | |
2498 | wait_status = alloca (strlen (rs->buf) + 1); | |
2499 | strcpy (wait_status, rs->buf); | |
2500 | } | |
2501 | ||
c0a2216e PA |
2502 | /* Start afresh. */ |
2503 | init_thread_list (); | |
2504 | ||
c906108c | 2505 | /* Let the stub know that we want it to return the thread. */ |
79d7f229 | 2506 | set_continue_thread (minus_one_ptid); |
c906108c | 2507 | |
2d717e4f DJ |
2508 | /* Without this, some commands which require an active target |
2509 | (such as kill) won't work. This variable serves (at least) | |
2510 | double duty as both the pid of the target process (if it has | |
2511 | such), and as a flag indicating that a target is active. | |
2512 | These functions should be split out into seperate variables, | |
2513 | especially since GDB will someday have a notion of debugging | |
2514 | several processes. */ | |
79d7f229 | 2515 | inferior_ptid = magic_null_ptid; |
2d717e4f DJ |
2516 | |
2517 | /* Now, if we have thread information, update inferior_ptid. */ | |
39f77062 | 2518 | inferior_ptid = remote_current_thread (inferior_ptid); |
c906108c | 2519 | |
82f73884 PA |
2520 | add_inferior (ptid_get_pid (inferior_ptid)); |
2521 | ||
c0a2216e PA |
2522 | /* Always add the main thread. */ |
2523 | add_thread_silent (inferior_ptid); | |
2524 | ||
23860348 | 2525 | get_offsets (); /* Get text, data & bss offsets. */ |
c906108c | 2526 | |
2d717e4f DJ |
2527 | /* Use the previously fetched status. */ |
2528 | gdb_assert (wait_status != NULL); | |
2529 | strcpy (rs->buf, wait_status); | |
2530 | rs->cached_wait_status = 1; | |
c906108c | 2531 | |
2d717e4f DJ |
2532 | immediate_quit--; |
2533 | start_remote (args->from_tty); /* Initialize gdb process mechanisms. */ | |
c8d104ad | 2534 | |
c8d104ad PA |
2535 | /* If we connected to a live target, do some additional setup. */ |
2536 | if (target_has_execution) | |
2537 | { | |
2538 | if (exec_bfd) /* No use without an exec file. */ | |
2539 | remote_check_symbols (symfile_objfile); | |
2540 | } | |
c906108c SS |
2541 | } |
2542 | ||
2543 | /* Open a connection to a remote debugger. | |
2544 | NAME is the filename used for communication. */ | |
2545 | ||
2546 | static void | |
fba45db2 | 2547 | remote_open (char *name, int from_tty) |
c906108c | 2548 | { |
75c99385 | 2549 | remote_open_1 (name, from_tty, &remote_ops, 0); |
43ff13b4 JM |
2550 | } |
2551 | ||
c906108c SS |
2552 | /* Open a connection to a remote debugger using the extended |
2553 | remote gdb protocol. NAME is the filename used for communication. */ | |
2554 | ||
2555 | static void | |
fba45db2 | 2556 | extended_remote_open (char *name, int from_tty) |
c906108c | 2557 | { |
75c99385 | 2558 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */); |
43ff13b4 JM |
2559 | } |
2560 | ||
c906108c SS |
2561 | /* Generic code for opening a connection to a remote target. */ |
2562 | ||
d471ea57 AC |
2563 | static void |
2564 | init_all_packet_configs (void) | |
2565 | { | |
2566 | int i; | |
444abaca DJ |
2567 | for (i = 0; i < PACKET_MAX; i++) |
2568 | update_packet_config (&remote_protocol_packets[i]); | |
d471ea57 AC |
2569 | } |
2570 | ||
23860348 | 2571 | /* Symbol look-up. */ |
dc8acb97 MS |
2572 | |
2573 | static void | |
2574 | remote_check_symbols (struct objfile *objfile) | |
2575 | { | |
d01949b6 | 2576 | struct remote_state *rs = get_remote_state (); |
dc8acb97 MS |
2577 | char *msg, *reply, *tmp; |
2578 | struct minimal_symbol *sym; | |
2579 | int end; | |
2580 | ||
444abaca | 2581 | if (remote_protocol_packets[PACKET_qSymbol].support == PACKET_DISABLE) |
dc8acb97 MS |
2582 | return; |
2583 | ||
3c9c4b83 PA |
2584 | /* Make sure the remote is pointing at the right process. */ |
2585 | set_general_process (); | |
2586 | ||
6d820c5c DJ |
2587 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
2588 | because we need both at the same time. */ | |
ea9c271d | 2589 | msg = alloca (get_remote_packet_size ()); |
6d820c5c | 2590 | |
23860348 | 2591 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
2592 | |
2593 | putpkt ("qSymbol::"); | |
6d820c5c DJ |
2594 | getpkt (&rs->buf, &rs->buf_size, 0); |
2595 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSymbol]); | |
2e9f7625 | 2596 | reply = rs->buf; |
dc8acb97 MS |
2597 | |
2598 | while (strncmp (reply, "qSymbol:", 8) == 0) | |
2599 | { | |
2600 | tmp = &reply[8]; | |
cfd77fa1 | 2601 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
2602 | msg[end] = '\0'; |
2603 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
2604 | if (sym == NULL) | |
ea9c271d | 2605 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
dc8acb97 | 2606 | else |
2bbe3cc1 DJ |
2607 | { |
2608 | CORE_ADDR sym_addr = SYMBOL_VALUE_ADDRESS (sym); | |
2609 | ||
2610 | /* If this is a function address, return the start of code | |
2611 | instead of any data function descriptor. */ | |
1cf3db46 | 2612 | sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch, |
2bbe3cc1 DJ |
2613 | sym_addr, |
2614 | ¤t_target); | |
2615 | ||
2616 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", | |
2617 | paddr_nz (sym_addr), &reply[8]); | |
2618 | } | |
2619 | ||
dc8acb97 | 2620 | putpkt (msg); |
6d820c5c | 2621 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2622 | reply = rs->buf; |
dc8acb97 MS |
2623 | } |
2624 | } | |
2625 | ||
9db8d71f DJ |
2626 | static struct serial * |
2627 | remote_serial_open (char *name) | |
2628 | { | |
2629 | static int udp_warning = 0; | |
2630 | ||
2631 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
2632 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
2633 | serial connection is reliable and not the serial connection promising | |
2634 | to be. */ | |
2635 | if (!udp_warning && strncmp (name, "udp:", 4) == 0) | |
2636 | { | |
8a3fe4f8 AC |
2637 | warning (_("\ |
2638 | The remote protocol may be unreliable over UDP.\n\ | |
2639 | Some events may be lost, rendering further debugging impossible.")); | |
9db8d71f DJ |
2640 | udp_warning = 1; |
2641 | } | |
2642 | ||
2643 | return serial_open (name); | |
2644 | } | |
2645 | ||
be2a5f71 DJ |
2646 | /* This type describes each known response to the qSupported |
2647 | packet. */ | |
2648 | struct protocol_feature | |
2649 | { | |
2650 | /* The name of this protocol feature. */ | |
2651 | const char *name; | |
2652 | ||
2653 | /* The default for this protocol feature. */ | |
2654 | enum packet_support default_support; | |
2655 | ||
2656 | /* The function to call when this feature is reported, or after | |
2657 | qSupported processing if the feature is not supported. | |
2658 | The first argument points to this structure. The second | |
2659 | argument indicates whether the packet requested support be | |
2660 | enabled, disabled, or probed (or the default, if this function | |
2661 | is being called at the end of processing and this feature was | |
2662 | not reported). The third argument may be NULL; if not NULL, it | |
2663 | is a NUL-terminated string taken from the packet following | |
2664 | this feature's name and an equals sign. */ | |
2665 | void (*func) (const struct protocol_feature *, enum packet_support, | |
2666 | const char *); | |
2667 | ||
2668 | /* The corresponding packet for this feature. Only used if | |
2669 | FUNC is remote_supported_packet. */ | |
2670 | int packet; | |
2671 | }; | |
2672 | ||
be2a5f71 DJ |
2673 | static void |
2674 | remote_supported_packet (const struct protocol_feature *feature, | |
2675 | enum packet_support support, | |
2676 | const char *argument) | |
2677 | { | |
2678 | if (argument) | |
2679 | { | |
2680 | warning (_("Remote qSupported response supplied an unexpected value for" | |
2681 | " \"%s\"."), feature->name); | |
2682 | return; | |
2683 | } | |
2684 | ||
2685 | if (remote_protocol_packets[feature->packet].support | |
2686 | == PACKET_SUPPORT_UNKNOWN) | |
2687 | remote_protocol_packets[feature->packet].support = support; | |
2688 | } | |
be2a5f71 DJ |
2689 | |
2690 | static void | |
2691 | remote_packet_size (const struct protocol_feature *feature, | |
2692 | enum packet_support support, const char *value) | |
2693 | { | |
2694 | struct remote_state *rs = get_remote_state (); | |
2695 | ||
2696 | int packet_size; | |
2697 | char *value_end; | |
2698 | ||
2699 | if (support != PACKET_ENABLE) | |
2700 | return; | |
2701 | ||
2702 | if (value == NULL || *value == '\0') | |
2703 | { | |
2704 | warning (_("Remote target reported \"%s\" without a size."), | |
2705 | feature->name); | |
2706 | return; | |
2707 | } | |
2708 | ||
2709 | errno = 0; | |
2710 | packet_size = strtol (value, &value_end, 16); | |
2711 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
2712 | { | |
2713 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
2714 | feature->name, value); | |
2715 | return; | |
2716 | } | |
2717 | ||
2718 | if (packet_size > MAX_REMOTE_PACKET_SIZE) | |
2719 | { | |
2720 | warning (_("limiting remote suggested packet size (%d bytes) to %d"), | |
2721 | packet_size, MAX_REMOTE_PACKET_SIZE); | |
2722 | packet_size = MAX_REMOTE_PACKET_SIZE; | |
2723 | } | |
2724 | ||
2725 | /* Record the new maximum packet size. */ | |
2726 | rs->explicit_packet_size = packet_size; | |
2727 | } | |
2728 | ||
82f73884 PA |
2729 | static void |
2730 | remote_multi_process_feature (const struct protocol_feature *feature, | |
2731 | enum packet_support support, const char *value) | |
2732 | { | |
2733 | struct remote_state *rs = get_remote_state (); | |
2734 | rs->multi_process_aware = (support == PACKET_ENABLE); | |
2735 | } | |
2736 | ||
be2a5f71 | 2737 | static struct protocol_feature remote_protocol_features[] = { |
0876f84a | 2738 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 2739 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 2740 | PACKET_qXfer_auxv }, |
23181151 DJ |
2741 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
2742 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
2743 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
2744 | PACKET_qXfer_libraries }, | |
fd79ecee | 2745 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 2746 | PACKET_qXfer_memory_map }, |
4de6483e UW |
2747 | { "qXfer:spu:read", PACKET_DISABLE, remote_supported_packet, |
2748 | PACKET_qXfer_spu_read }, | |
2749 | { "qXfer:spu:write", PACKET_DISABLE, remote_supported_packet, | |
2750 | PACKET_qXfer_spu_write }, | |
89be2091 DJ |
2751 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
2752 | PACKET_QPassSignals }, | |
a6f3e723 SL |
2753 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
2754 | PACKET_QStartNoAckMode }, | |
82f73884 | 2755 | { "multiprocess", PACKET_DISABLE, remote_multi_process_feature, -1 }, |
be2a5f71 DJ |
2756 | }; |
2757 | ||
2758 | static void | |
2759 | remote_query_supported (void) | |
2760 | { | |
2761 | struct remote_state *rs = get_remote_state (); | |
2762 | char *next; | |
2763 | int i; | |
2764 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
2765 | ||
2766 | /* The packet support flags are handled differently for this packet | |
2767 | than for most others. We treat an error, a disabled packet, and | |
2768 | an empty response identically: any features which must be reported | |
2769 | to be used will be automatically disabled. An empty buffer | |
2770 | accomplishes this, since that is also the representation for a list | |
2771 | containing no features. */ | |
2772 | ||
2773 | rs->buf[0] = 0; | |
2774 | if (remote_protocol_packets[PACKET_qSupported].support != PACKET_DISABLE) | |
2775 | { | |
82f73884 PA |
2776 | if (rs->extended) |
2777 | putpkt ("qSupported:multiprocess+"); | |
2778 | else | |
2779 | putpkt ("qSupported"); | |
2780 | ||
be2a5f71 DJ |
2781 | getpkt (&rs->buf, &rs->buf_size, 0); |
2782 | ||
2783 | /* If an error occured, warn, but do not return - just reset the | |
2784 | buffer to empty and go on to disable features. */ | |
2785 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
2786 | == PACKET_ERROR) | |
2787 | { | |
2788 | warning (_("Remote failure reply: %s"), rs->buf); | |
2789 | rs->buf[0] = 0; | |
2790 | } | |
2791 | } | |
2792 | ||
2793 | memset (seen, 0, sizeof (seen)); | |
2794 | ||
2795 | next = rs->buf; | |
2796 | while (*next) | |
2797 | { | |
2798 | enum packet_support is_supported; | |
2799 | char *p, *end, *name_end, *value; | |
2800 | ||
2801 | /* First separate out this item from the rest of the packet. If | |
2802 | there's another item after this, we overwrite the separator | |
2803 | (terminated strings are much easier to work with). */ | |
2804 | p = next; | |
2805 | end = strchr (p, ';'); | |
2806 | if (end == NULL) | |
2807 | { | |
2808 | end = p + strlen (p); | |
2809 | next = end; | |
2810 | } | |
2811 | else | |
2812 | { | |
89be2091 DJ |
2813 | *end = '\0'; |
2814 | next = end + 1; | |
2815 | ||
be2a5f71 DJ |
2816 | if (end == p) |
2817 | { | |
2818 | warning (_("empty item in \"qSupported\" response")); | |
2819 | continue; | |
2820 | } | |
be2a5f71 DJ |
2821 | } |
2822 | ||
2823 | name_end = strchr (p, '='); | |
2824 | if (name_end) | |
2825 | { | |
2826 | /* This is a name=value entry. */ | |
2827 | is_supported = PACKET_ENABLE; | |
2828 | value = name_end + 1; | |
2829 | *name_end = '\0'; | |
2830 | } | |
2831 | else | |
2832 | { | |
2833 | value = NULL; | |
2834 | switch (end[-1]) | |
2835 | { | |
2836 | case '+': | |
2837 | is_supported = PACKET_ENABLE; | |
2838 | break; | |
2839 | ||
2840 | case '-': | |
2841 | is_supported = PACKET_DISABLE; | |
2842 | break; | |
2843 | ||
2844 | case '?': | |
2845 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
2846 | break; | |
2847 | ||
2848 | default: | |
2849 | warning (_("unrecognized item \"%s\" in \"qSupported\" response"), p); | |
2850 | continue; | |
2851 | } | |
2852 | end[-1] = '\0'; | |
2853 | } | |
2854 | ||
2855 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
2856 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
2857 | { | |
2858 | const struct protocol_feature *feature; | |
2859 | ||
2860 | seen[i] = 1; | |
2861 | feature = &remote_protocol_features[i]; | |
2862 | feature->func (feature, is_supported, value); | |
2863 | break; | |
2864 | } | |
2865 | } | |
2866 | ||
2867 | /* If we increased the packet size, make sure to increase the global | |
2868 | buffer size also. We delay this until after parsing the entire | |
2869 | qSupported packet, because this is the same buffer we were | |
2870 | parsing. */ | |
2871 | if (rs->buf_size < rs->explicit_packet_size) | |
2872 | { | |
2873 | rs->buf_size = rs->explicit_packet_size; | |
2874 | rs->buf = xrealloc (rs->buf, rs->buf_size); | |
2875 | } | |
2876 | ||
2877 | /* Handle the defaults for unmentioned features. */ | |
2878 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
2879 | if (!seen[i]) | |
2880 | { | |
2881 | const struct protocol_feature *feature; | |
2882 | ||
2883 | feature = &remote_protocol_features[i]; | |
2884 | feature->func (feature, feature->default_support, NULL); | |
2885 | } | |
2886 | } | |
2887 | ||
2888 | ||
c906108c | 2889 | static void |
75c99385 | 2890 | remote_open_1 (char *name, int from_tty, struct target_ops *target, int extended_p) |
c906108c | 2891 | { |
d01949b6 | 2892 | struct remote_state *rs = get_remote_state (); |
a6f3e723 | 2893 | |
c906108c | 2894 | if (name == 0) |
8a3fe4f8 | 2895 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 2896 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 2897 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 2898 | |
23860348 | 2899 | /* See FIXME above. */ |
c6ebd6cf | 2900 | if (!target_async_permitted) |
92d1e331 | 2901 | wait_forever_enabled_p = 1; |
6426a772 | 2902 | |
2d717e4f DJ |
2903 | /* If we're connected to a running target, target_preopen will kill it. |
2904 | But if we're connected to a target system with no running process, | |
2905 | then we will still be connected when it returns. Ask this question | |
2906 | first, before target_preopen has a chance to kill anything. */ | |
2907 | if (remote_desc != NULL && !target_has_execution) | |
2908 | { | |
2909 | if (!from_tty | |
2910 | || query (_("Already connected to a remote target. Disconnect? "))) | |
2911 | pop_target (); | |
2912 | else | |
2913 | error (_("Still connected.")); | |
2914 | } | |
2915 | ||
c906108c SS |
2916 | target_preopen (from_tty); |
2917 | ||
2918 | unpush_target (target); | |
2919 | ||
2d717e4f DJ |
2920 | /* This time without a query. If we were connected to an |
2921 | extended-remote target and target_preopen killed the running | |
2922 | process, we may still be connected. If we are starting "target | |
2923 | remote" now, the extended-remote target will not have been | |
2924 | removed by unpush_target. */ | |
2925 | if (remote_desc != NULL && !target_has_execution) | |
2926 | pop_target (); | |
2927 | ||
89be2091 DJ |
2928 | /* Make sure we send the passed signals list the next time we resume. */ |
2929 | xfree (last_pass_packet); | |
2930 | last_pass_packet = NULL; | |
2931 | ||
ad9a8f3f | 2932 | remote_fileio_reset (); |
1dd41f16 NS |
2933 | reopen_exec_file (); |
2934 | reread_symbols (); | |
2935 | ||
9db8d71f | 2936 | remote_desc = remote_serial_open (name); |
c906108c SS |
2937 | if (!remote_desc) |
2938 | perror_with_name (name); | |
2939 | ||
2940 | if (baud_rate != -1) | |
2941 | { | |
2cd58942 | 2942 | if (serial_setbaudrate (remote_desc, baud_rate)) |
c906108c | 2943 | { |
9b74d5d3 KB |
2944 | /* The requested speed could not be set. Error out to |
2945 | top level after closing remote_desc. Take care to | |
2946 | set remote_desc to NULL to avoid closing remote_desc | |
2947 | more than once. */ | |
2cd58942 | 2948 | serial_close (remote_desc); |
9b74d5d3 | 2949 | remote_desc = NULL; |
c906108c SS |
2950 | perror_with_name (name); |
2951 | } | |
2952 | } | |
2953 | ||
2cd58942 | 2954 | serial_raw (remote_desc); |
c906108c SS |
2955 | |
2956 | /* If there is something sitting in the buffer we might take it as a | |
2957 | response to a command, which would be bad. */ | |
2cd58942 | 2958 | serial_flush_input (remote_desc); |
c906108c SS |
2959 | |
2960 | if (from_tty) | |
2961 | { | |
2962 | puts_filtered ("Remote debugging using "); | |
2963 | puts_filtered (name); | |
2964 | puts_filtered ("\n"); | |
2965 | } | |
23860348 | 2966 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 2967 | |
2d717e4f DJ |
2968 | /* Assume that the target is running, unless we learn otherwise. */ |
2969 | target_mark_running (target); | |
2970 | ||
be2a5f71 DJ |
2971 | /* Reset the target state; these things will be queried either by |
2972 | remote_query_supported or as they are needed. */ | |
d471ea57 | 2973 | init_all_packet_configs (); |
be2a5f71 | 2974 | rs->explicit_packet_size = 0; |
a6f3e723 | 2975 | rs->noack_mode = 0; |
82f73884 PA |
2976 | rs->multi_process_aware = 0; |
2977 | rs->extended = extended_p; | |
e24a49d8 | 2978 | rs->waiting_for_stop_reply = 0; |
802188a7 | 2979 | |
79d7f229 PA |
2980 | general_thread = not_sent_ptid; |
2981 | continue_thread = not_sent_ptid; | |
c906108c | 2982 | |
9d1f7ab2 MS |
2983 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
2984 | use_threadinfo_query = 1; | |
2985 | use_threadextra_query = 1; | |
2986 | ||
c6ebd6cf | 2987 | if (target_async_permitted) |
92d1e331 | 2988 | { |
23860348 | 2989 | /* With this target we start out by owning the terminal. */ |
92d1e331 DJ |
2990 | remote_async_terminal_ours_p = 1; |
2991 | ||
2992 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
2993 | assumed that the target is already ready and able to respond to | |
2994 | requests. Unfortunately remote_start_remote() eventually calls | |
2995 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets | |
2996 | around this. Eventually a mechanism that allows | |
2997 | wait_for_inferior() to expect/get timeouts will be | |
23860348 | 2998 | implemented. */ |
92d1e331 DJ |
2999 | wait_forever_enabled_p = 0; |
3000 | } | |
3001 | ||
23860348 | 3002 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 3003 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 3004 | |
36918e70 | 3005 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
3006 | target (we'd otherwise be in an inconsistent state) and then |
3007 | propogate the error on up the exception chain. This ensures that | |
3008 | the caller doesn't stumble along blindly assuming that the | |
3009 | function succeeded. The CLI doesn't have this problem but other | |
3010 | UI's, such as MI do. | |
36918e70 AC |
3011 | |
3012 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
3013 | this function should return an error indication letting the | |
ce2826aa | 3014 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
3015 | ``target remote'' is directly wired to this function making that |
3016 | impossible. On a positive note, the CLI side of this problem has | |
3017 | been fixed - the function set_cmd_context() makes it possible for | |
3018 | all the ``target ....'' commands to share a common callback | |
3019 | function. See cli-dump.c. */ | |
109c3e39 | 3020 | { |
2d717e4f DJ |
3021 | struct gdb_exception ex; |
3022 | struct start_remote_args args; | |
3023 | ||
3024 | args.from_tty = from_tty; | |
3025 | args.target = target; | |
3026 | args.extended_p = extended_p; | |
3027 | ||
3028 | ex = catch_exception (uiout, remote_start_remote, &args, RETURN_MASK_ALL); | |
109c3e39 AC |
3029 | if (ex.reason < 0) |
3030 | { | |
c8d104ad PA |
3031 | /* Pop the partially set up target - unless something else did |
3032 | already before throwing the exception. */ | |
3033 | if (remote_desc != NULL) | |
3034 | pop_target (); | |
c6ebd6cf | 3035 | if (target_async_permitted) |
109c3e39 AC |
3036 | wait_forever_enabled_p = 1; |
3037 | throw_exception (ex); | |
3038 | } | |
3039 | } | |
c906108c | 3040 | |
c6ebd6cf | 3041 | if (target_async_permitted) |
92d1e331 | 3042 | wait_forever_enabled_p = 1; |
43ff13b4 JM |
3043 | } |
3044 | ||
c906108c SS |
3045 | /* This takes a program previously attached to and detaches it. After |
3046 | this is done, GDB can be used to debug some other program. We | |
3047 | better not have left any breakpoints in the target program or it'll | |
3048 | die when it hits one. */ | |
3049 | ||
3050 | static void | |
2d717e4f | 3051 | remote_detach_1 (char *args, int from_tty, int extended) |
c906108c | 3052 | { |
82f73884 | 3053 | int pid = ptid_get_pid (inferior_ptid); |
d01949b6 | 3054 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3055 | |
3056 | if (args) | |
8a3fe4f8 | 3057 | error (_("Argument given to \"detach\" when remotely debugging.")); |
c906108c | 3058 | |
2d717e4f DJ |
3059 | if (!target_has_execution) |
3060 | error (_("No process to detach from.")); | |
3061 | ||
c906108c | 3062 | /* Tell the remote target to detach. */ |
82f73884 PA |
3063 | if (remote_multi_process_p (rs)) |
3064 | sprintf (rs->buf, "D;%x", pid); | |
3065 | else | |
3066 | strcpy (rs->buf, "D"); | |
3067 | ||
4ddda9b5 PA |
3068 | putpkt (rs->buf); |
3069 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3070 | ||
82f73884 PA |
3071 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') |
3072 | ; | |
3073 | else if (rs->buf[0] == '\0') | |
3074 | error (_("Remote doesn't know how to detach")); | |
3075 | else | |
4ddda9b5 | 3076 | error (_("Can't detach process.")); |
c906108c | 3077 | |
c906108c | 3078 | if (from_tty) |
2d717e4f | 3079 | { |
82f73884 PA |
3080 | if (remote_multi_process_p (rs)) |
3081 | printf_filtered (_("Detached from remote %s.\n"), | |
3082 | target_pid_to_str (pid_to_ptid (pid))); | |
2d717e4f | 3083 | else |
82f73884 PA |
3084 | { |
3085 | if (extended) | |
3086 | puts_filtered (_("Detached from remote process.\n")); | |
3087 | else | |
3088 | puts_filtered (_("Ending remote debugging.\n")); | |
3089 | } | |
2d717e4f | 3090 | } |
82f73884 PA |
3091 | |
3092 | detach_inferior (pid); | |
3093 | target_mourn_inferior (); | |
2d717e4f DJ |
3094 | } |
3095 | ||
3096 | static void | |
3097 | remote_detach (char *args, int from_tty) | |
3098 | { | |
3099 | remote_detach_1 (args, from_tty, 0); | |
3100 | } | |
3101 | ||
3102 | static void | |
3103 | extended_remote_detach (char *args, int from_tty) | |
3104 | { | |
3105 | remote_detach_1 (args, from_tty, 1); | |
c906108c SS |
3106 | } |
3107 | ||
6ad8ae5c DJ |
3108 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
3109 | ||
43ff13b4 | 3110 | static void |
597320e7 | 3111 | remote_disconnect (struct target_ops *target, char *args, int from_tty) |
43ff13b4 | 3112 | { |
43ff13b4 | 3113 | if (args) |
2d717e4f | 3114 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 3115 | |
2d717e4f DJ |
3116 | /* Make sure we unpush even the extended remote targets; mourn |
3117 | won't do it. So call remote_mourn_1 directly instead of | |
3118 | target_mourn_inferior. */ | |
3119 | remote_mourn_1 (target); | |
3120 | ||
43ff13b4 JM |
3121 | if (from_tty) |
3122 | puts_filtered ("Ending remote debugging.\n"); | |
3123 | } | |
3124 | ||
2d717e4f DJ |
3125 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
3126 | be chatty about it. */ | |
3127 | ||
3128 | static void | |
3129 | extended_remote_attach_1 (struct target_ops *target, char *args, int from_tty) | |
3130 | { | |
3131 | struct remote_state *rs = get_remote_state (); | |
be86555c | 3132 | int pid; |
2d717e4f | 3133 | char *dummy; |
96ef3384 | 3134 | char *wait_status = NULL; |
181e7f93 | 3135 | struct inferior *inf; |
2d717e4f DJ |
3136 | |
3137 | if (!args) | |
3138 | error_no_arg (_("process-id to attach")); | |
3139 | ||
3140 | dummy = args; | |
3141 | pid = strtol (args, &dummy, 0); | |
3142 | /* Some targets don't set errno on errors, grrr! */ | |
3143 | if (pid == 0 && args == dummy) | |
3144 | error (_("Illegal process-id: %s."), args); | |
3145 | ||
3146 | if (remote_protocol_packets[PACKET_vAttach].support == PACKET_DISABLE) | |
3147 | error (_("This target does not support attaching to a process")); | |
3148 | ||
3149 | sprintf (rs->buf, "vAttach;%x", pid); | |
3150 | putpkt (rs->buf); | |
3151 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3152 | ||
3153 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vAttach]) == PACKET_OK) | |
3154 | { | |
3155 | if (from_tty) | |
3156 | printf_unfiltered (_("Attached to %s\n"), | |
3157 | target_pid_to_str (pid_to_ptid (pid))); | |
3158 | ||
96ef3384 UW |
3159 | /* Save the reply for later. */ |
3160 | wait_status = alloca (strlen (rs->buf) + 1); | |
3161 | strcpy (wait_status, rs->buf); | |
2d717e4f DJ |
3162 | } |
3163 | else if (remote_protocol_packets[PACKET_vAttach].support == PACKET_DISABLE) | |
3164 | error (_("This target does not support attaching to a process")); | |
3165 | else | |
3166 | error (_("Attaching to %s failed"), | |
3167 | target_pid_to_str (pid_to_ptid (pid))); | |
3168 | ||
3169 | target_mark_running (target); | |
3170 | inferior_ptid = pid_to_ptid (pid); | |
79d7f229 PA |
3171 | |
3172 | /* Now, if we have thread information, update inferior_ptid. */ | |
3173 | inferior_ptid = remote_current_thread (inferior_ptid); | |
3174 | ||
181e7f93 PA |
3175 | inf = add_inferior (pid); |
3176 | inf->attach_flag = 1; | |
82f73884 | 3177 | |
c0a2216e PA |
3178 | /* Now, add the main thread to the thread list. */ |
3179 | add_thread_silent (inferior_ptid); | |
3180 | ||
96ef3384 UW |
3181 | /* Next, if the target can specify a description, read it. We do |
3182 | this before anything involving memory or registers. */ | |
3183 | target_find_description (); | |
3184 | ||
3185 | /* Use the previously fetched status. */ | |
3186 | gdb_assert (wait_status != NULL); | |
3187 | strcpy (rs->buf, wait_status); | |
3188 | rs->cached_wait_status = 1; | |
2d717e4f DJ |
3189 | } |
3190 | ||
3191 | static void | |
3192 | extended_remote_attach (char *args, int from_tty) | |
3193 | { | |
3194 | extended_remote_attach_1 (&extended_remote_ops, args, from_tty); | |
3195 | } | |
3196 | ||
c906108c SS |
3197 | /* Convert hex digit A to a number. */ |
3198 | ||
30559e10 | 3199 | static int |
fba45db2 | 3200 | fromhex (int a) |
c906108c SS |
3201 | { |
3202 | if (a >= '0' && a <= '9') | |
3203 | return a - '0'; | |
3204 | else if (a >= 'a' && a <= 'f') | |
3205 | return a - 'a' + 10; | |
3206 | else if (a >= 'A' && a <= 'F') | |
3207 | return a - 'A' + 10; | |
c5aa993b | 3208 | else |
8a3fe4f8 | 3209 | error (_("Reply contains invalid hex digit %d"), a); |
c906108c SS |
3210 | } |
3211 | ||
30559e10 | 3212 | static int |
cfd77fa1 | 3213 | hex2bin (const char *hex, gdb_byte *bin, int count) |
30559e10 MS |
3214 | { |
3215 | int i; | |
3216 | ||
30559e10 MS |
3217 | for (i = 0; i < count; i++) |
3218 | { | |
3219 | if (hex[0] == 0 || hex[1] == 0) | |
3220 | { | |
3221 | /* Hex string is short, or of uneven length. | |
23860348 | 3222 | Return the count that has been converted so far. */ |
30559e10 MS |
3223 | return i; |
3224 | } | |
3225 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); | |
3226 | hex += 2; | |
3227 | } | |
3228 | return i; | |
3229 | } | |
3230 | ||
c906108c SS |
3231 | /* Convert number NIB to a hex digit. */ |
3232 | ||
3233 | static int | |
fba45db2 | 3234 | tohex (int nib) |
c906108c SS |
3235 | { |
3236 | if (nib < 10) | |
c5aa993b | 3237 | return '0' + nib; |
c906108c | 3238 | else |
c5aa993b | 3239 | return 'a' + nib - 10; |
c906108c | 3240 | } |
30559e10 MS |
3241 | |
3242 | static int | |
cfd77fa1 | 3243 | bin2hex (const gdb_byte *bin, char *hex, int count) |
30559e10 MS |
3244 | { |
3245 | int i; | |
23860348 | 3246 | /* May use a length, or a nul-terminated string as input. */ |
30559e10 | 3247 | if (count == 0) |
cfd77fa1 | 3248 | count = strlen ((char *) bin); |
30559e10 MS |
3249 | |
3250 | for (i = 0; i < count; i++) | |
3251 | { | |
3252 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
3253 | *hex++ = tohex (*bin++ & 0xf); | |
3254 | } | |
3255 | *hex = 0; | |
3256 | return i; | |
3257 | } | |
c906108c | 3258 | \f |
506fb367 DJ |
3259 | /* Check for the availability of vCont. This function should also check |
3260 | the response. */ | |
c906108c SS |
3261 | |
3262 | static void | |
6d820c5c | 3263 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 3264 | { |
2e9f7625 | 3265 | char *buf; |
6d820c5c | 3266 | |
2e9f7625 DJ |
3267 | strcpy (rs->buf, "vCont?"); |
3268 | putpkt (rs->buf); | |
6d820c5c | 3269 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3270 | buf = rs->buf; |
c906108c | 3271 | |
506fb367 DJ |
3272 | /* Make sure that the features we assume are supported. */ |
3273 | if (strncmp (buf, "vCont", 5) == 0) | |
3274 | { | |
3275 | char *p = &buf[5]; | |
3276 | int support_s, support_S, support_c, support_C; | |
3277 | ||
3278 | support_s = 0; | |
3279 | support_S = 0; | |
3280 | support_c = 0; | |
3281 | support_C = 0; | |
3282 | while (p && *p == ';') | |
3283 | { | |
3284 | p++; | |
3285 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
3286 | support_s = 1; | |
3287 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
3288 | support_S = 1; | |
3289 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
3290 | support_c = 1; | |
3291 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
3292 | support_C = 1; | |
3293 | ||
3294 | p = strchr (p, ';'); | |
3295 | } | |
c906108c | 3296 | |
506fb367 DJ |
3297 | /* If s, S, c, and C are not all supported, we can't use vCont. Clearing |
3298 | BUF will make packet_ok disable the packet. */ | |
3299 | if (!support_s || !support_S || !support_c || !support_C) | |
3300 | buf[0] = 0; | |
3301 | } | |
c906108c | 3302 | |
444abaca | 3303 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 3304 | } |
c906108c | 3305 | |
506fb367 DJ |
3306 | /* Resume the remote inferior by using a "vCont" packet. The thread |
3307 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
79d7f229 PA |
3308 | resumed thread should be single-stepped and/or signalled. If PTID |
3309 | equals minus_one_ptid, then all threads are resumed; the thread to | |
3310 | be stepped and/or signalled is given in the global INFERIOR_PTID. | |
3311 | This function returns non-zero iff it resumes the inferior. | |
44eaed12 | 3312 | |
506fb367 DJ |
3313 | This function issues a strict subset of all possible vCont commands at the |
3314 | moment. */ | |
44eaed12 | 3315 | |
506fb367 DJ |
3316 | static int |
3317 | remote_vcont_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
3318 | { | |
3319 | struct remote_state *rs = get_remote_state (); | |
82f73884 PA |
3320 | char *p; |
3321 | char *endp; | |
44eaed12 | 3322 | |
444abaca | 3323 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 3324 | remote_vcont_probe (rs); |
44eaed12 | 3325 | |
444abaca | 3326 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_DISABLE) |
6d820c5c | 3327 | return 0; |
44eaed12 | 3328 | |
82f73884 PA |
3329 | p = rs->buf; |
3330 | endp = rs->buf + get_remote_packet_size (); | |
3331 | ||
506fb367 DJ |
3332 | /* If we could generate a wider range of packets, we'd have to worry |
3333 | about overflowing BUF. Should there be a generic | |
3334 | "multi-part-packet" packet? */ | |
3335 | ||
79d7f229 | 3336 | if (ptid_equal (ptid, magic_null_ptid)) |
c906108c | 3337 | { |
79d7f229 PA |
3338 | /* MAGIC_NULL_PTID means that we don't have any active threads, |
3339 | so we don't have any TID numbers the inferior will | |
3340 | understand. Make sure to only send forms that do not specify | |
3341 | a TID. */ | |
506fb367 | 3342 | if (step && siggnal != TARGET_SIGNAL_0) |
82f73884 | 3343 | xsnprintf (p, endp - p, "vCont;S%02x", siggnal); |
506fb367 | 3344 | else if (step) |
82f73884 | 3345 | xsnprintf (p, endp - p, "vCont;s"); |
506fb367 | 3346 | else if (siggnal != TARGET_SIGNAL_0) |
82f73884 | 3347 | xsnprintf (p, endp - p, "vCont;C%02x", siggnal); |
506fb367 | 3348 | else |
82f73884 | 3349 | xsnprintf (p, endp - p, "vCont;c"); |
506fb367 | 3350 | } |
79d7f229 | 3351 | else if (ptid_equal (ptid, minus_one_ptid)) |
506fb367 DJ |
3352 | { |
3353 | /* Resume all threads, with preference for INFERIOR_PTID. */ | |
3354 | if (step && siggnal != TARGET_SIGNAL_0) | |
82f73884 PA |
3355 | { |
3356 | /* Step inferior_ptid with signal. */ | |
3357 | p += xsnprintf (p, endp - p, "vCont;S%02x:", siggnal); | |
3358 | p = write_ptid (p, endp, inferior_ptid); | |
3359 | /* And continue others. */ | |
3360 | p += xsnprintf (p, endp - p, ";c"); | |
3361 | } | |
506fb367 | 3362 | else if (step) |
82f73884 PA |
3363 | { |
3364 | /* Step inferior_ptid. */ | |
3365 | p += xsnprintf (p, endp - p, "vCont;s:"); | |
3366 | p = write_ptid (p, endp, inferior_ptid); | |
3367 | /* And continue others. */ | |
3368 | p += xsnprintf (p, endp - p, ";c"); | |
3369 | } | |
506fb367 | 3370 | else if (siggnal != TARGET_SIGNAL_0) |
82f73884 PA |
3371 | { |
3372 | /* Continue inferior_ptid with signal. */ | |
3373 | p += xsnprintf (p, endp - p, "vCont;C%02x:", siggnal); | |
3374 | p = write_ptid (p, endp, inferior_ptid); | |
3375 | /* And continue others. */ | |
3376 | p += xsnprintf (p, endp - p, ";c"); | |
3377 | } | |
506fb367 | 3378 | else |
82f73884 | 3379 | xsnprintf (p, endp - p, "vCont;c"); |
c906108c SS |
3380 | } |
3381 | else | |
506fb367 DJ |
3382 | { |
3383 | /* Scheduler locking; resume only PTID. */ | |
3384 | if (step && siggnal != TARGET_SIGNAL_0) | |
82f73884 PA |
3385 | { |
3386 | /* Step ptid with signal. */ | |
3387 | p += xsnprintf (p, endp - p, "vCont;S%02x:", siggnal); | |
3388 | p = write_ptid (p, endp, ptid); | |
3389 | } | |
506fb367 | 3390 | else if (step) |
82f73884 PA |
3391 | { |
3392 | /* Step ptid. */ | |
3393 | p += xsnprintf (p, endp - p, "vCont;s:"); | |
3394 | p = write_ptid (p, endp, ptid); | |
3395 | } | |
506fb367 | 3396 | else if (siggnal != TARGET_SIGNAL_0) |
82f73884 PA |
3397 | { |
3398 | /* Continue ptid with signal. */ | |
3399 | p += xsnprintf (p, endp - p, "vCont;C%02x:", siggnal); | |
3400 | p = write_ptid (p, endp, ptid); | |
3401 | } | |
506fb367 | 3402 | else |
82f73884 PA |
3403 | { |
3404 | /* Continue ptid. */ | |
3405 | p += xsnprintf (p, endp - p, "vCont;c:"); | |
3406 | p = write_ptid (p, endp, ptid); | |
3407 | } | |
506fb367 | 3408 | } |
c906108c | 3409 | |
82f73884 PA |
3410 | gdb_assert (strlen (rs->buf) < get_remote_packet_size ()); |
3411 | putpkt (rs->buf); | |
506fb367 DJ |
3412 | |
3413 | return 1; | |
c906108c | 3414 | } |
43ff13b4 | 3415 | |
506fb367 DJ |
3416 | /* Tell the remote machine to resume. */ |
3417 | ||
3418 | static enum target_signal last_sent_signal = TARGET_SIGNAL_0; | |
3419 | ||
3420 | static int last_sent_step; | |
3421 | ||
43ff13b4 | 3422 | static void |
506fb367 | 3423 | remote_resume (ptid_t ptid, int step, enum target_signal siggnal) |
43ff13b4 | 3424 | { |
d01949b6 | 3425 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 3426 | char *buf; |
43ff13b4 | 3427 | |
43ff13b4 JM |
3428 | last_sent_signal = siggnal; |
3429 | last_sent_step = step; | |
3430 | ||
89be2091 DJ |
3431 | /* Update the inferior on signals to silently pass, if they've changed. */ |
3432 | remote_pass_signals (); | |
3433 | ||
506fb367 DJ |
3434 | /* The vCont packet doesn't need to specify threads via Hc. */ |
3435 | if (remote_vcont_resume (ptid, step, siggnal)) | |
75c99385 | 3436 | goto done; |
506fb367 | 3437 | |
79d7f229 PA |
3438 | /* All other supported resume packets do use Hc, so set the continue |
3439 | thread. */ | |
3440 | if (ptid_equal (ptid, minus_one_ptid)) | |
3441 | set_continue_thread (any_thread_ptid); | |
506fb367 | 3442 | else |
79d7f229 | 3443 | set_continue_thread (ptid); |
506fb367 | 3444 | |
2e9f7625 | 3445 | buf = rs->buf; |
b2175913 MS |
3446 | if (execution_direction == EXEC_REVERSE) |
3447 | { | |
3448 | /* We don't pass signals to the target in reverse exec mode. */ | |
3449 | if (info_verbose && siggnal != TARGET_SIGNAL_0) | |
3450 | warning (" - Can't pass signal %d to target in reverse: ignored.\n", | |
3451 | siggnal); | |
3452 | strcpy (buf, step ? "bs" : "bc"); | |
3453 | } | |
3454 | else if (siggnal != TARGET_SIGNAL_0) | |
43ff13b4 JM |
3455 | { |
3456 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 3457 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 3458 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
3459 | buf[3] = '\0'; |
3460 | } | |
3461 | else | |
c5aa993b | 3462 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 3463 | |
44eaed12 | 3464 | putpkt (buf); |
43ff13b4 | 3465 | |
75c99385 | 3466 | done: |
2acceee2 JM |
3467 | /* We are about to start executing the inferior, let's register it |
3468 | with the event loop. NOTE: this is the one place where all the | |
3469 | execution commands end up. We could alternatively do this in each | |
23860348 | 3470 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
3471 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
3472 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 3473 | NOT asynchronously. */ |
362646f5 | 3474 | if (target_can_async_p ()) |
2acceee2 | 3475 | target_async (inferior_event_handler, 0); |
e24a49d8 PA |
3476 | |
3477 | /* We've just told the target to resume. The remote server will | |
3478 | wait for the inferior to stop, and then send a stop reply. In | |
3479 | the mean time, we can't start another command/query ourselves | |
3480 | because the stub wouldn't be ready to process it. */ | |
3481 | rs->waiting_for_stop_reply = 1; | |
43ff13b4 | 3482 | } |
c906108c | 3483 | \f |
43ff13b4 JM |
3484 | |
3485 | /* Set up the signal handler for SIGINT, while the target is | |
23860348 | 3486 | executing, ovewriting the 'regular' SIGINT signal handler. */ |
43ff13b4 | 3487 | static void |
fba45db2 | 3488 | initialize_sigint_signal_handler (void) |
43ff13b4 | 3489 | { |
43ff13b4 JM |
3490 | signal (SIGINT, handle_remote_sigint); |
3491 | } | |
3492 | ||
23860348 | 3493 | /* Signal handler for SIGINT, while the target is executing. */ |
43ff13b4 | 3494 | static void |
fba45db2 | 3495 | handle_remote_sigint (int sig) |
43ff13b4 JM |
3496 | { |
3497 | signal (sig, handle_remote_sigint_twice); | |
43ff13b4 JM |
3498 | mark_async_signal_handler_wrapper (sigint_remote_token); |
3499 | } | |
3500 | ||
3501 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
3502 | sent once. It will take effect the second time that the user sends | |
23860348 | 3503 | a ^C. */ |
43ff13b4 | 3504 | static void |
fba45db2 | 3505 | handle_remote_sigint_twice (int sig) |
43ff13b4 | 3506 | { |
b803fb0f | 3507 | signal (sig, handle_remote_sigint); |
43ff13b4 JM |
3508 | mark_async_signal_handler_wrapper (sigint_remote_twice_token); |
3509 | } | |
3510 | ||
6426a772 | 3511 | /* Perform the real interruption of the target execution, in response |
23860348 | 3512 | to a ^C. */ |
c5aa993b | 3513 | static void |
fba45db2 | 3514 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
3515 | { |
3516 | if (remote_debug) | |
3517 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
3518 | ||
94cc34af | 3519 | target_stop (inferior_ptid); |
43ff13b4 JM |
3520 | } |
3521 | ||
3522 | /* Perform interrupt, if the first attempt did not succeed. Just give | |
23860348 | 3523 | up on the target alltogether. */ |
2df3850c | 3524 | void |
fba45db2 | 3525 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 3526 | { |
2df3850c JM |
3527 | if (remote_debug) |
3528 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt_twice called\n"); | |
b803fb0f DJ |
3529 | |
3530 | interrupt_query (); | |
43ff13b4 JM |
3531 | } |
3532 | ||
3533 | /* Reinstall the usual SIGINT handlers, after the target has | |
23860348 | 3534 | stopped. */ |
6426a772 JM |
3535 | static void |
3536 | cleanup_sigint_signal_handler (void *dummy) | |
43ff13b4 JM |
3537 | { |
3538 | signal (SIGINT, handle_sigint); | |
43ff13b4 JM |
3539 | } |
3540 | ||
c906108c SS |
3541 | /* Send ^C to target to halt it. Target will respond, and send us a |
3542 | packet. */ | |
507f3c78 | 3543 | static void (*ofunc) (int); |
c906108c | 3544 | |
7a292a7a SS |
3545 | /* The command line interface's stop routine. This function is installed |
3546 | as a signal handler for SIGINT. The first time a user requests a | |
3547 | stop, we call remote_stop to send a break or ^C. If there is no | |
3548 | response from the target (it didn't stop when the user requested it), | |
23860348 | 3549 | we ask the user if he'd like to detach from the target. */ |
c906108c | 3550 | static void |
fba45db2 | 3551 | remote_interrupt (int signo) |
c906108c | 3552 | { |
23860348 | 3553 | /* If this doesn't work, try more severe steps. */ |
7a292a7a SS |
3554 | signal (signo, remote_interrupt_twice); |
3555 | ||
b803fb0f | 3556 | gdb_call_async_signal_handler (sigint_remote_token, 1); |
7a292a7a SS |
3557 | } |
3558 | ||
3559 | /* The user typed ^C twice. */ | |
3560 | ||
3561 | static void | |
fba45db2 | 3562 | remote_interrupt_twice (int signo) |
7a292a7a SS |
3563 | { |
3564 | signal (signo, ofunc); | |
b803fb0f | 3565 | gdb_call_async_signal_handler (sigint_remote_twice_token, 1); |
c906108c SS |
3566 | signal (signo, remote_interrupt); |
3567 | } | |
7a292a7a SS |
3568 | |
3569 | /* This is the generic stop called via the target vector. When a target | |
3570 | interrupt is requested, either by the command line or the GUI, we | |
23860348 | 3571 | will eventually end up here. */ |
c906108c | 3572 | static void |
94cc34af | 3573 | remote_stop (ptid_t ptid) |
c906108c | 3574 | { |
7a292a7a SS |
3575 | /* Send a break or a ^C, depending on user preference. */ |
3576 | if (remote_debug) | |
0f71a2f6 | 3577 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 3578 | |
7a292a7a | 3579 | if (remote_break) |
2cd58942 | 3580 | serial_send_break (remote_desc); |
c906108c | 3581 | else |
2cd58942 | 3582 | serial_write (remote_desc, "\003", 1); |
c906108c SS |
3583 | } |
3584 | ||
3585 | /* Ask the user what to do when an interrupt is received. */ | |
3586 | ||
3587 | static void | |
fba45db2 | 3588 | interrupt_query (void) |
c906108c SS |
3589 | { |
3590 | target_terminal_ours (); | |
3591 | ||
3592 | if (query ("Interrupted while waiting for the program.\n\ | |
3593 | Give up (and stop debugging it)? ")) | |
3594 | { | |
ce5ce7ed | 3595 | pop_target (); |
315a522e | 3596 | deprecated_throw_reason (RETURN_QUIT); |
c906108c SS |
3597 | } |
3598 | ||
3599 | target_terminal_inferior (); | |
3600 | } | |
3601 | ||
6426a772 JM |
3602 | /* Enable/disable target terminal ownership. Most targets can use |
3603 | terminal groups to control terminal ownership. Remote targets are | |
3604 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 3605 | is required. */ |
6426a772 JM |
3606 | |
3607 | static void | |
75c99385 | 3608 | remote_terminal_inferior (void) |
6426a772 | 3609 | { |
c6ebd6cf | 3610 | if (!target_async_permitted) |
75c99385 PA |
3611 | /* Nothing to do. */ |
3612 | return; | |
3613 | ||
6426a772 JM |
3614 | /* FIXME: cagney/1999-09-27: Shouldn't need to test for |
3615 | sync_execution here. This function should only be called when | |
3616 | GDB is resuming the inferior in the forground. A background | |
3617 | resume (``run&'') should leave GDB in control of the terminal and | |
23860348 | 3618 | consequently should not call this code. */ |
6426a772 JM |
3619 | if (!sync_execution) |
3620 | return; | |
3621 | /* FIXME: cagney/1999-09-27: Closely related to the above. Make | |
3622 | calls target_terminal_*() idenpotent. The event-loop GDB talking | |
3623 | to an asynchronous target with a synchronous command calls this | |
3624 | function from both event-top.c and infrun.c/infcmd.c. Once GDB | |
3625 | stops trying to transfer the terminal to the target when it | |
3626 | shouldn't this guard can go away. */ | |
3627 | if (!remote_async_terminal_ours_p) | |
3628 | return; | |
3629 | delete_file_handler (input_fd); | |
3630 | remote_async_terminal_ours_p = 0; | |
3631 | initialize_sigint_signal_handler (); | |
3632 | /* NOTE: At this point we could also register our selves as the | |
3633 | recipient of all input. Any characters typed could then be | |
23860348 | 3634 | passed on down to the target. */ |
6426a772 JM |
3635 | } |
3636 | ||
3637 | static void | |
75c99385 | 3638 | remote_terminal_ours (void) |
6426a772 | 3639 | { |
c6ebd6cf | 3640 | if (!target_async_permitted) |
75c99385 PA |
3641 | /* Nothing to do. */ |
3642 | return; | |
3643 | ||
3644 | /* See FIXME in remote_terminal_inferior. */ | |
6426a772 JM |
3645 | if (!sync_execution) |
3646 | return; | |
75c99385 | 3647 | /* See FIXME in remote_terminal_inferior. */ |
6426a772 JM |
3648 | if (remote_async_terminal_ours_p) |
3649 | return; | |
3650 | cleanup_sigint_signal_handler (NULL); | |
3651 | add_file_handler (input_fd, stdin_event_handler, 0); | |
3652 | remote_async_terminal_ours_p = 1; | |
3653 | } | |
3654 | ||
c906108c | 3655 | void |
917317f4 | 3656 | remote_console_output (char *msg) |
c906108c SS |
3657 | { |
3658 | char *p; | |
3659 | ||
c5aa993b | 3660 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
3661 | { |
3662 | char tb[2]; | |
3663 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3664 | tb[0] = c; | |
3665 | tb[1] = 0; | |
43ff13b4 | 3666 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 3667 | } |
917317f4 | 3668 | gdb_flush (gdb_stdtarg); |
c906108c SS |
3669 | } |
3670 | ||
0f71a2f6 | 3671 | /* Wait until the remote machine stops, then return, |
79d7f229 | 3672 | storing status in STATUS just as `wait' would. */ |
c906108c | 3673 | |
39f77062 | 3674 | static ptid_t |
c8e38a49 | 3675 | remote_wait_as (ptid_t ptid, struct target_waitstatus *status) |
c906108c | 3676 | { |
d01949b6 | 3677 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 3678 | struct remote_arch_state *rsa = get_remote_arch_state (); |
82f73884 | 3679 | ptid_t event_ptid = null_ptid; |
3c3bea1c | 3680 | ULONGEST addr; |
cfa9d6d9 | 3681 | int solibs_changed = 0; |
b2175913 | 3682 | int replay_event = 0; |
c8e38a49 | 3683 | char *buf, *p; |
c906108c | 3684 | |
c8e38a49 | 3685 | status->kind = TARGET_WAITKIND_IGNORE; |
c906108c SS |
3686 | status->value.integer = 0; |
3687 | ||
c8e38a49 PA |
3688 | if (rs->cached_wait_status) |
3689 | /* Use the cached wait status, but only once. */ | |
3690 | rs->cached_wait_status = 0; | |
3691 | else | |
43ff13b4 | 3692 | { |
c8e38a49 | 3693 | if (!target_is_async_p ()) |
9fa2223d | 3694 | { |
c8e38a49 PA |
3695 | ofunc = signal (SIGINT, remote_interrupt); |
3696 | /* If the user hit C-c before this packet, or between | |
3697 | packets, pretend that it was hit right here. */ | |
3698 | if (quit_flag) | |
9fa2223d | 3699 | { |
c8e38a49 PA |
3700 | quit_flag = 0; |
3701 | remote_interrupt (SIGINT); | |
9fa2223d DJ |
3702 | } |
3703 | } | |
c8e38a49 PA |
3704 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
3705 | _never_ wait for ever -> test on target_is_async_p(). | |
3706 | However, before we do that we need to ensure that the caller | |
3707 | knows how to take the target into/out of async mode. */ | |
3708 | getpkt (&rs->buf, &rs->buf_size, wait_forever_enabled_p); | |
3709 | if (!target_is_async_p ()) | |
3710 | signal (SIGINT, ofunc); | |
3711 | } | |
43ff13b4 | 3712 | |
c8e38a49 | 3713 | buf = rs->buf; |
2e9f7625 | 3714 | |
c8e38a49 | 3715 | remote_stopped_by_watchpoint_p = 0; |
75c99385 | 3716 | |
c8e38a49 PA |
3717 | /* We got something. */ |
3718 | rs->waiting_for_stop_reply = 0; | |
e24a49d8 | 3719 | |
c8e38a49 PA |
3720 | switch (buf[0]) |
3721 | { | |
3722 | case 'E': /* Error of some sort. */ | |
3723 | /* We're out of sync with the target now. Did it continue or | |
3724 | not? Not is more likely, so report a stop. */ | |
3725 | warning (_("Remote failure reply: %s"), buf); | |
3726 | status->kind = TARGET_WAITKIND_STOPPED; | |
3727 | status->value.sig = TARGET_SIGNAL_0; | |
3728 | break; | |
3729 | case 'F': /* File-I/O request. */ | |
3730 | remote_fileio_request (buf); | |
e24a49d8 | 3731 | |
c8e38a49 PA |
3732 | /* This stop reply is special. We reply back to the stub, |
3733 | and keep waiting for the target to stop. */ | |
3734 | rs->waiting_for_stop_reply = 1; | |
3735 | break; | |
3736 | case 'T': /* Status with PC, SP, FP, ... */ | |
3737 | { | |
3738 | gdb_byte regs[MAX_REGISTER_SIZE]; | |
43ff13b4 | 3739 | |
c8e38a49 PA |
3740 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
3741 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
3742 | ss = signal number | |
3743 | n... = register number | |
3744 | r... = register contents | |
3745 | */ | |
3746 | p = &buf[3]; /* after Txx */ | |
43ff13b4 | 3747 | |
c8e38a49 PA |
3748 | while (*p) |
3749 | { | |
3750 | char *p1; | |
3751 | char *p_temp; | |
3752 | int fieldsize; | |
3753 | LONGEST pnum = 0; | |
43ff13b4 | 3754 | |
c8e38a49 PA |
3755 | /* If the packet contains a register number, save it in |
3756 | pnum and set p1 to point to the character following it. | |
3757 | Otherwise p1 points to p. */ | |
3c3bea1c | 3758 | |
c8e38a49 PA |
3759 | /* If this packet is an awatch packet, don't parse the |
3760 | 'a' as a register number. */ | |
3761 | ||
3762 | if (strncmp (p, "awatch", strlen("awatch")) != 0) | |
3763 | { | |
3764 | /* Read the ``P'' register number. */ | |
3765 | pnum = strtol (p, &p_temp, 16); | |
3766 | p1 = p_temp; | |
3767 | } | |
3768 | else | |
3769 | p1 = p; | |
802188a7 | 3770 | |
c8e38a49 PA |
3771 | if (p1 == p) /* No register number present here. */ |
3772 | { | |
3773 | p1 = strchr (p, ':'); | |
3774 | if (p1 == NULL) | |
3775 | error (_("Malformed packet(a) (missing colon): %s\n\ | |
3776 | Packet: '%s'\n"), | |
3777 | p, buf); | |
3778 | if (strncmp (p, "thread", p1 - p) == 0) | |
3779 | event_ptid = read_ptid (++p1, &p); | |
3780 | else if ((strncmp (p, "watch", p1 - p) == 0) | |
3781 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
3782 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
3c3bea1c | 3783 | { |
c8e38a49 PA |
3784 | remote_stopped_by_watchpoint_p = 1; |
3785 | p = unpack_varlen_hex (++p1, &addr); | |
3786 | remote_watch_data_address = (CORE_ADDR)addr; | |
3c3bea1c | 3787 | } |
c8e38a49 | 3788 | else if (strncmp (p, "library", p1 - p) == 0) |
43ff13b4 | 3789 | { |
c8e38a49 PA |
3790 | p1++; |
3791 | p_temp = p1; | |
3792 | while (*p_temp && *p_temp != ';') | |
3793 | p_temp++; | |
3794 | ||
3795 | solibs_changed = 1; | |
3796 | p = p_temp; | |
43ff13b4 | 3797 | } |
b2175913 MS |
3798 | else if (strncmp (p, "replaylog", p1 - p) == 0) |
3799 | { | |
3800 | /* NO_HISTORY event. | |
3801 | p1 will indicate "begin" or "end", but | |
3802 | it makes no difference for now, so ignore it. */ | |
3803 | replay_event = 1; | |
3804 | p_temp = strchr (p1 + 1, ';'); | |
3805 | if (p_temp) | |
3806 | p = p_temp; | |
3807 | } | |
43ff13b4 JM |
3808 | else |
3809 | { | |
c8e38a49 PA |
3810 | /* Silently skip unknown optional info. */ |
3811 | p_temp = strchr (p1 + 1, ';'); | |
3812 | if (p_temp) | |
3813 | p = p_temp; | |
3814 | } | |
3815 | } | |
3816 | else | |
3817 | { | |
3818 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); | |
3819 | p = p1; | |
75c99385 | 3820 | |
c8e38a49 PA |
3821 | if (*p != ':') |
3822 | error (_("Malformed packet(b) (missing colon): %s\n\ | |
8a3fe4f8 | 3823 | Packet: '%s'\n"), |
c8e38a49 PA |
3824 | p, buf); |
3825 | ++p; | |
43ff13b4 | 3826 | |
c8e38a49 PA |
3827 | if (reg == NULL) |
3828 | error (_("Remote sent bad register number %s: %s\n\ | |
8a3fe4f8 | 3829 | Packet: '%s'\n"), |
c8e38a49 PA |
3830 | phex_nz (pnum, 0), p, buf); |
3831 | ||
3832 | fieldsize = hex2bin (p, regs, | |
3833 | register_size (target_gdbarch, | |
3834 | reg->regnum)); | |
3835 | p += 2 * fieldsize; | |
3836 | if (fieldsize < register_size (target_gdbarch, | |
3837 | reg->regnum)) | |
3838 | warning (_("Remote reply is too short: %s"), buf); | |
3839 | regcache_raw_supply (get_current_regcache (), | |
3840 | reg->regnum, regs); | |
43ff13b4 | 3841 | } |
c8e38a49 PA |
3842 | |
3843 | if (*p != ';') | |
3844 | error (_("Remote register badly formatted: %s\nhere: %s"), | |
3845 | buf, p); | |
3846 | ++p; | |
43ff13b4 | 3847 | } |
c8e38a49 PA |
3848 | } |
3849 | /* fall through */ | |
3850 | case 'S': /* Old style status, just signal only. */ | |
3851 | if (solibs_changed) | |
3852 | status->kind = TARGET_WAITKIND_LOADED; | |
b2175913 MS |
3853 | else if (replay_event) |
3854 | status->kind = TARGET_WAITKIND_NO_HISTORY; | |
c8e38a49 PA |
3855 | else |
3856 | { | |
3857 | status->kind = TARGET_WAITKIND_STOPPED; | |
3858 | status->value.sig = (enum target_signal) | |
3859 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3860 | } | |
3861 | break; | |
3862 | case 'W': /* Target exited. */ | |
3863 | case 'X': | |
3864 | { | |
3865 | char *p; | |
3866 | int pid; | |
3867 | ULONGEST value; | |
82f73884 | 3868 | |
c8e38a49 PA |
3869 | /* GDB used to accept only 2 hex chars here. Stubs should |
3870 | only send more if they detect GDB supports multi-process | |
3871 | support. */ | |
3872 | p = unpack_varlen_hex (&buf[1], &value); | |
82f73884 | 3873 | |
c8e38a49 PA |
3874 | if (buf[0] == 'W') |
3875 | { | |
3876 | /* The remote process exited. */ | |
3877 | status->kind = TARGET_WAITKIND_EXITED; | |
3878 | status->value.integer = value; | |
3879 | } | |
3880 | else | |
3881 | { | |
3882 | /* The remote process exited with a signal. */ | |
3883 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
3884 | status->value.sig = (enum target_signal) value; | |
3885 | } | |
82f73884 | 3886 | |
c8e38a49 PA |
3887 | /* If no process is specified, assume inferior_ptid. */ |
3888 | pid = ptid_get_pid (inferior_ptid); | |
3889 | if (*p == '\0') | |
3890 | ; | |
3891 | else if (*p == ';') | |
3892 | { | |
3893 | p++; | |
3894 | ||
3895 | if (p == '\0') | |
82f73884 | 3896 | ; |
c8e38a49 PA |
3897 | else if (strncmp (p, |
3898 | "process:", sizeof ("process:") - 1) == 0) | |
82f73884 | 3899 | { |
c8e38a49 PA |
3900 | ULONGEST upid; |
3901 | p += sizeof ("process:") - 1; | |
3902 | unpack_varlen_hex (p, &upid); | |
3903 | pid = upid; | |
82f73884 PA |
3904 | } |
3905 | else | |
3906 | error (_("unknown stop reply packet: %s"), buf); | |
43ff13b4 | 3907 | } |
c8e38a49 PA |
3908 | else |
3909 | error (_("unknown stop reply packet: %s"), buf); | |
3910 | event_ptid = pid_to_ptid (pid); | |
3911 | break; | |
3912 | } | |
3913 | case 'O': /* Console output. */ | |
3914 | remote_console_output (buf + 1); | |
e24a49d8 | 3915 | |
c8e38a49 PA |
3916 | /* The target didn't really stop; keep waiting. */ |
3917 | rs->waiting_for_stop_reply = 1; | |
e24a49d8 | 3918 | |
c8e38a49 PA |
3919 | break; |
3920 | case '\0': | |
3921 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3922 | { | |
3923 | /* Zero length reply means that we tried 'S' or 'C' and the | |
3924 | remote system doesn't support it. */ | |
3925 | target_terminal_ours_for_output (); | |
3926 | printf_filtered | |
3927 | ("Can't send signals to this remote system. %s not sent.\n", | |
3928 | target_signal_to_name (last_sent_signal)); | |
3929 | last_sent_signal = TARGET_SIGNAL_0; | |
3930 | target_terminal_inferior (); | |
3931 | ||
3932 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3933 | putpkt ((char *) buf); | |
3934 | ||
3935 | /* We just told the target to resume, so a stop reply is in | |
3936 | order. */ | |
e24a49d8 | 3937 | rs->waiting_for_stop_reply = 1; |
c8e38a49 | 3938 | break; |
43ff13b4 | 3939 | } |
c8e38a49 PA |
3940 | /* else fallthrough */ |
3941 | default: | |
3942 | warning (_("Invalid remote reply: %s"), buf); | |
3943 | /* Keep waiting. */ | |
3944 | rs->waiting_for_stop_reply = 1; | |
3945 | break; | |
43ff13b4 | 3946 | } |
c8e38a49 PA |
3947 | |
3948 | /* Nothing interesting happened. */ | |
3949 | if (status->kind == TARGET_WAITKIND_IGNORE) | |
3950 | return minus_one_ptid; | |
3951 | ||
82f73884 PA |
3952 | if (status->kind == TARGET_WAITKIND_EXITED |
3953 | || status->kind == TARGET_WAITKIND_SIGNALLED) | |
43ff13b4 | 3954 | { |
82f73884 PA |
3955 | int pid = ptid_get_pid (event_ptid); |
3956 | delete_inferior (pid); | |
3957 | } | |
3958 | else | |
3959 | { | |
3960 | if (!ptid_equal (event_ptid, null_ptid)) | |
3961 | record_currthread (event_ptid); | |
3962 | else | |
3963 | event_ptid = inferior_ptid; | |
43ff13b4 | 3964 | } |
79d7f229 | 3965 | |
82f73884 | 3966 | return event_ptid; |
43ff13b4 JM |
3967 | } |
3968 | ||
c8e38a49 PA |
3969 | static ptid_t |
3970 | remote_wait (ptid_t ptid, struct target_waitstatus *status) | |
3971 | { | |
3972 | ptid_t event_ptid; | |
3973 | ||
3974 | /* In synchronous mode, keep waiting until the target stops. In | |
3975 | asynchronous mode, always return to the event loop. */ | |
3976 | ||
3977 | do | |
3978 | { | |
3979 | event_ptid = remote_wait_as (ptid, status); | |
3980 | } | |
3981 | while (status->kind == TARGET_WAITKIND_IGNORE | |
3982 | && !target_can_async_p ()); | |
3983 | ||
3984 | return event_ptid; | |
3985 | } | |
3986 | ||
74ca34ce | 3987 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 3988 | |
b96ec7ac | 3989 | static int |
56be3814 | 3990 | fetch_register_using_p (struct regcache *regcache, struct packet_reg *reg) |
b96ec7ac AC |
3991 | { |
3992 | struct remote_state *rs = get_remote_state (); | |
2e9f7625 | 3993 | char *buf, *p; |
b96ec7ac AC |
3994 | char regp[MAX_REGISTER_SIZE]; |
3995 | int i; | |
3996 | ||
74ca34ce DJ |
3997 | if (remote_protocol_packets[PACKET_p].support == PACKET_DISABLE) |
3998 | return 0; | |
3999 | ||
4000 | if (reg->pnum == -1) | |
4001 | return 0; | |
4002 | ||
2e9f7625 | 4003 | p = rs->buf; |
fcad0fa4 | 4004 | *p++ = 'p'; |
74ca34ce | 4005 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 4006 | *p++ = '\0'; |
6d820c5c | 4007 | remote_send (&rs->buf, &rs->buf_size); |
3f9a994c | 4008 | |
2e9f7625 DJ |
4009 | buf = rs->buf; |
4010 | ||
74ca34ce DJ |
4011 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_p])) |
4012 | { | |
4013 | case PACKET_OK: | |
4014 | break; | |
4015 | case PACKET_UNKNOWN: | |
4016 | return 0; | |
4017 | case PACKET_ERROR: | |
4018 | error (_("Could not fetch register \"%s\""), | |
4a22f64d | 4019 | gdbarch_register_name (get_regcache_arch (regcache), reg->regnum)); |
74ca34ce | 4020 | } |
3f9a994c JB |
4021 | |
4022 | /* If this register is unfetchable, tell the regcache. */ | |
4023 | if (buf[0] == 'x') | |
8480adf2 | 4024 | { |
56be3814 | 4025 | regcache_raw_supply (regcache, reg->regnum, NULL); |
8480adf2 | 4026 | return 1; |
b96ec7ac | 4027 | } |
b96ec7ac | 4028 | |
3f9a994c JB |
4029 | /* Otherwise, parse and supply the value. */ |
4030 | p = buf; | |
4031 | i = 0; | |
4032 | while (p[0] != 0) | |
4033 | { | |
4034 | if (p[1] == 0) | |
74ca34ce | 4035 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
4036 | |
4037 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
4038 | p += 2; | |
4039 | } | |
56be3814 | 4040 | regcache_raw_supply (regcache, reg->regnum, regp); |
3f9a994c | 4041 | return 1; |
b96ec7ac AC |
4042 | } |
4043 | ||
74ca34ce DJ |
4044 | /* Fetch the registers included in the target's 'g' packet. */ |
4045 | ||
29709017 DJ |
4046 | static int |
4047 | send_g_packet (void) | |
c906108c | 4048 | { |
d01949b6 | 4049 | struct remote_state *rs = get_remote_state (); |
74ca34ce | 4050 | int i, buf_len; |
c906108c | 4051 | char *p; |
74ca34ce | 4052 | char *regs; |
c906108c | 4053 | |
74ca34ce DJ |
4054 | sprintf (rs->buf, "g"); |
4055 | remote_send (&rs->buf, &rs->buf_size); | |
c906108c | 4056 | |
29709017 DJ |
4057 | /* We can get out of synch in various cases. If the first character |
4058 | in the buffer is not a hex character, assume that has happened | |
4059 | and try to fetch another packet to read. */ | |
4060 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
4061 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
4062 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
4063 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
4064 | { | |
4065 | if (remote_debug) | |
4066 | fprintf_unfiltered (gdb_stdlog, | |
4067 | "Bad register packet; fetching a new packet\n"); | |
4068 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4069 | } | |
4070 | ||
74ca34ce DJ |
4071 | buf_len = strlen (rs->buf); |
4072 | ||
4073 | /* Sanity check the received packet. */ | |
4074 | if (buf_len % 2 != 0) | |
4075 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf); | |
29709017 DJ |
4076 | |
4077 | return buf_len / 2; | |
4078 | } | |
4079 | ||
4080 | static void | |
56be3814 | 4081 | process_g_packet (struct regcache *regcache) |
29709017 | 4082 | { |
4a22f64d | 4083 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
29709017 DJ |
4084 | struct remote_state *rs = get_remote_state (); |
4085 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
4086 | int i, buf_len; | |
4087 | char *p; | |
4088 | char *regs; | |
4089 | ||
4090 | buf_len = strlen (rs->buf); | |
4091 | ||
4092 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce DJ |
4093 | if (buf_len > 2 * rsa->sizeof_g_packet) |
4094 | error (_("Remote 'g' packet reply is too long: %s"), rs->buf); | |
4095 | ||
4096 | /* Save the size of the packet sent to us by the target. It is used | |
4097 | as a heuristic when determining the max size of packets that the | |
4098 | target can safely receive. */ | |
4099 | if (rsa->actual_register_packet_size == 0) | |
4100 | rsa->actual_register_packet_size = buf_len; | |
4101 | ||
4102 | /* If this is smaller than we guessed the 'g' packet would be, | |
4103 | update our records. A 'g' reply that doesn't include a register's | |
4104 | value implies either that the register is not available, or that | |
4105 | the 'p' packet must be used. */ | |
4106 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 4107 | { |
74ca34ce DJ |
4108 | rsa->sizeof_g_packet = buf_len / 2; |
4109 | ||
4a22f64d | 4110 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 4111 | { |
74ca34ce DJ |
4112 | if (rsa->regs[i].pnum == -1) |
4113 | continue; | |
4114 | ||
4115 | if (rsa->regs[i].offset >= rsa->sizeof_g_packet) | |
4116 | rsa->regs[i].in_g_packet = 0; | |
b96ec7ac | 4117 | else |
74ca34ce | 4118 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 4119 | } |
74ca34ce | 4120 | } |
b323314b | 4121 | |
74ca34ce | 4122 | regs = alloca (rsa->sizeof_g_packet); |
c906108c SS |
4123 | |
4124 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 4125 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 4126 | |
c906108c SS |
4127 | /* Reply describes registers byte by byte, each byte encoded as two |
4128 | hex characters. Suck them all up, then supply them to the | |
4129 | register cacheing/storage mechanism. */ | |
4130 | ||
74ca34ce | 4131 | p = rs->buf; |
ea9c271d | 4132 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 4133 | { |
74ca34ce DJ |
4134 | if (p[0] == 0 || p[1] == 0) |
4135 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
4136 | internal_error (__FILE__, __LINE__, | |
4137 | "unexpected end of 'g' packet reply"); | |
4138 | ||
c906108c | 4139 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 4140 | regs[i] = 0; /* 'x' */ |
c906108c SS |
4141 | else |
4142 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
4143 | p += 2; | |
4144 | } | |
4145 | ||
ad10f812 | 4146 | { |
b323314b | 4147 | int i; |
4a22f64d | 4148 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
ad10f812 | 4149 | { |
ea9c271d | 4150 | struct packet_reg *r = &rsa->regs[i]; |
b323314b AC |
4151 | if (r->in_g_packet) |
4152 | { | |
74ca34ce DJ |
4153 | if (r->offset * 2 >= strlen (rs->buf)) |
4154 | /* This shouldn't happen - we adjusted in_g_packet above. */ | |
4155 | internal_error (__FILE__, __LINE__, | |
4156 | "unexpected end of 'g' packet reply"); | |
4157 | else if (rs->buf[r->offset * 2] == 'x') | |
8ccc1287 | 4158 | { |
74ca34ce | 4159 | gdb_assert (r->offset * 2 < strlen (rs->buf)); |
8ccc1287 AC |
4160 | /* The register isn't available, mark it as such (at |
4161 | the same time setting the value to zero). */ | |
56be3814 | 4162 | regcache_raw_supply (regcache, r->regnum, NULL); |
8ccc1287 AC |
4163 | } |
4164 | else | |
56be3814 | 4165 | regcache_raw_supply (regcache, r->regnum, |
8ccc1287 | 4166 | regs + r->offset); |
b323314b | 4167 | } |
ad10f812 AC |
4168 | } |
4169 | } | |
c906108c SS |
4170 | } |
4171 | ||
29709017 | 4172 | static void |
56be3814 | 4173 | fetch_registers_using_g (struct regcache *regcache) |
29709017 DJ |
4174 | { |
4175 | send_g_packet (); | |
56be3814 | 4176 | process_g_packet (regcache); |
29709017 DJ |
4177 | } |
4178 | ||
74ca34ce | 4179 | static void |
56be3814 | 4180 | remote_fetch_registers (struct regcache *regcache, int regnum) |
74ca34ce DJ |
4181 | { |
4182 | struct remote_state *rs = get_remote_state (); | |
4183 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
4184 | int i; | |
4185 | ||
79d7f229 | 4186 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
4187 | |
4188 | if (regnum >= 0) | |
4189 | { | |
4190 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
4191 | gdb_assert (reg != NULL); | |
4192 | ||
4193 | /* If this register might be in the 'g' packet, try that first - | |
4194 | we are likely to read more than one register. If this is the | |
4195 | first 'g' packet, we might be overly optimistic about its | |
4196 | contents, so fall back to 'p'. */ | |
4197 | if (reg->in_g_packet) | |
4198 | { | |
56be3814 | 4199 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
4200 | if (reg->in_g_packet) |
4201 | return; | |
4202 | } | |
4203 | ||
56be3814 | 4204 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
4205 | return; |
4206 | ||
4207 | /* This register is not available. */ | |
56be3814 | 4208 | regcache_raw_supply (regcache, reg->regnum, NULL); |
74ca34ce DJ |
4209 | |
4210 | return; | |
4211 | } | |
4212 | ||
56be3814 | 4213 | fetch_registers_using_g (regcache); |
74ca34ce | 4214 | |
4a22f64d | 4215 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 4216 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 4217 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
4218 | { |
4219 | /* This register is not available. */ | |
56be3814 | 4220 | regcache_raw_supply (regcache, i, NULL); |
74ca34ce DJ |
4221 | } |
4222 | } | |
4223 | ||
c906108c SS |
4224 | /* Prepare to store registers. Since we may send them all (using a |
4225 | 'G' request), we have to read out the ones we don't want to change | |
4226 | first. */ | |
4227 | ||
c5aa993b | 4228 | static void |
316f2060 | 4229 | remote_prepare_to_store (struct regcache *regcache) |
c906108c | 4230 | { |
ea9c271d | 4231 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cf0e1e0d | 4232 | int i; |
cfd77fa1 | 4233 | gdb_byte buf[MAX_REGISTER_SIZE]; |
cf0e1e0d | 4234 | |
c906108c | 4235 | /* Make sure the entire registers array is valid. */ |
444abaca | 4236 | switch (remote_protocol_packets[PACKET_P].support) |
5a2468f5 JM |
4237 | { |
4238 | case PACKET_DISABLE: | |
4239 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 4240 | /* Make sure all the necessary registers are cached. */ |
4a22f64d | 4241 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
ea9c271d | 4242 | if (rsa->regs[i].in_g_packet) |
316f2060 | 4243 | regcache_raw_read (regcache, rsa->regs[i].regnum, buf); |
5a2468f5 JM |
4244 | break; |
4245 | case PACKET_ENABLE: | |
4246 | break; | |
4247 | } | |
4248 | } | |
4249 | ||
ad10f812 | 4250 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 4251 | packet was not recognized. */ |
5a2468f5 JM |
4252 | |
4253 | static int | |
56be3814 | 4254 | store_register_using_P (const struct regcache *regcache, struct packet_reg *reg) |
5a2468f5 | 4255 | { |
4a22f64d | 4256 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
d01949b6 | 4257 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 4258 | struct remote_arch_state *rsa = get_remote_arch_state (); |
5a2468f5 | 4259 | /* Try storing a single register. */ |
6d820c5c | 4260 | char *buf = rs->buf; |
cfd77fa1 | 4261 | gdb_byte regp[MAX_REGISTER_SIZE]; |
5a2468f5 | 4262 | char *p; |
5a2468f5 | 4263 | |
74ca34ce DJ |
4264 | if (remote_protocol_packets[PACKET_P].support == PACKET_DISABLE) |
4265 | return 0; | |
4266 | ||
4267 | if (reg->pnum == -1) | |
4268 | return 0; | |
4269 | ||
ea9c271d | 4270 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 4271 | p = buf + strlen (buf); |
56be3814 | 4272 | regcache_raw_collect (regcache, reg->regnum, regp); |
4a22f64d | 4273 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
6d820c5c | 4274 | remote_send (&rs->buf, &rs->buf_size); |
5a2468f5 | 4275 | |
74ca34ce DJ |
4276 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
4277 | { | |
4278 | case PACKET_OK: | |
4279 | return 1; | |
4280 | case PACKET_ERROR: | |
4281 | error (_("Could not write register \"%s\""), | |
4a22f64d | 4282 | gdbarch_register_name (gdbarch, reg->regnum)); |
74ca34ce DJ |
4283 | case PACKET_UNKNOWN: |
4284 | return 0; | |
4285 | default: | |
4286 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
4287 | } | |
c906108c SS |
4288 | } |
4289 | ||
23860348 MS |
4290 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
4291 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
4292 | |
4293 | static void | |
56be3814 | 4294 | store_registers_using_G (const struct regcache *regcache) |
c906108c | 4295 | { |
d01949b6 | 4296 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 4297 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cfd77fa1 | 4298 | gdb_byte *regs; |
c906108c SS |
4299 | char *p; |
4300 | ||
193cb69f AC |
4301 | /* Extract all the registers in the regcache copying them into a |
4302 | local buffer. */ | |
4303 | { | |
b323314b | 4304 | int i; |
ea9c271d DJ |
4305 | regs = alloca (rsa->sizeof_g_packet); |
4306 | memset (regs, 0, rsa->sizeof_g_packet); | |
4a22f64d | 4307 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
193cb69f | 4308 | { |
ea9c271d | 4309 | struct packet_reg *r = &rsa->regs[i]; |
b323314b | 4310 | if (r->in_g_packet) |
56be3814 | 4311 | regcache_raw_collect (regcache, r->regnum, regs + r->offset); |
193cb69f AC |
4312 | } |
4313 | } | |
c906108c SS |
4314 | |
4315 | /* Command describes registers byte by byte, | |
4316 | each byte encoded as two hex characters. */ | |
6d820c5c | 4317 | p = rs->buf; |
193cb69f | 4318 | *p++ = 'G'; |
74ca34ce DJ |
4319 | /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets |
4320 | updated. */ | |
4321 | bin2hex (regs, p, rsa->sizeof_g_packet); | |
6d820c5c | 4322 | remote_send (&rs->buf, &rs->buf_size); |
c906108c | 4323 | } |
74ca34ce DJ |
4324 | |
4325 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
4326 | of the register cache buffer. FIXME: ignores errors. */ | |
4327 | ||
4328 | static void | |
56be3814 | 4329 | remote_store_registers (struct regcache *regcache, int regnum) |
74ca34ce DJ |
4330 | { |
4331 | struct remote_state *rs = get_remote_state (); | |
4332 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
4333 | int i; | |
4334 | ||
79d7f229 | 4335 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
4336 | |
4337 | if (regnum >= 0) | |
4338 | { | |
4339 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
4340 | gdb_assert (reg != NULL); | |
4341 | ||
4342 | /* Always prefer to store registers using the 'P' packet if | |
4343 | possible; we often change only a small number of registers. | |
4344 | Sometimes we change a larger number; we'd need help from a | |
4345 | higher layer to know to use 'G'. */ | |
56be3814 | 4346 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
4347 | return; |
4348 | ||
4349 | /* For now, don't complain if we have no way to write the | |
4350 | register. GDB loses track of unavailable registers too | |
4351 | easily. Some day, this may be an error. We don't have | |
4352 | any way to read the register, either... */ | |
4353 | if (!reg->in_g_packet) | |
4354 | return; | |
4355 | ||
56be3814 | 4356 | store_registers_using_G (regcache); |
74ca34ce DJ |
4357 | return; |
4358 | } | |
4359 | ||
56be3814 | 4360 | store_registers_using_G (regcache); |
74ca34ce | 4361 | |
4a22f64d | 4362 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 4363 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 4364 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
4365 | /* See above for why we do not issue an error here. */ |
4366 | continue; | |
4367 | } | |
c906108c SS |
4368 | \f |
4369 | ||
4370 | /* Return the number of hex digits in num. */ | |
4371 | ||
4372 | static int | |
fba45db2 | 4373 | hexnumlen (ULONGEST num) |
c906108c SS |
4374 | { |
4375 | int i; | |
4376 | ||
4377 | for (i = 0; num != 0; i++) | |
4378 | num >>= 4; | |
4379 | ||
4380 | return max (i, 1); | |
4381 | } | |
4382 | ||
2df3850c | 4383 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
4384 | |
4385 | static int | |
fba45db2 | 4386 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 4387 | { |
c906108c | 4388 | int len = hexnumlen (num); |
2df3850c JM |
4389 | return hexnumnstr (buf, num, len); |
4390 | } | |
4391 | ||
c906108c | 4392 | |
2df3850c | 4393 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 4394 | |
2df3850c | 4395 | static int |
fba45db2 | 4396 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
4397 | { |
4398 | int i; | |
4399 | ||
4400 | buf[width] = '\0'; | |
4401 | ||
4402 | for (i = width - 1; i >= 0; i--) | |
c906108c | 4403 | { |
c5aa993b | 4404 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
4405 | num >>= 4; |
4406 | } | |
4407 | ||
2df3850c | 4408 | return width; |
c906108c SS |
4409 | } |
4410 | ||
23860348 | 4411 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
4412 | |
4413 | static CORE_ADDR | |
fba45db2 | 4414 | remote_address_masked (CORE_ADDR addr) |
c906108c | 4415 | { |
911c95a5 UW |
4416 | int address_size = remote_address_size; |
4417 | /* If "remoteaddresssize" was not set, default to target address size. */ | |
4418 | if (!address_size) | |
1cf3db46 | 4419 | address_size = gdbarch_addr_bit (target_gdbarch); |
911c95a5 UW |
4420 | |
4421 | if (address_size > 0 | |
4422 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
4423 | { |
4424 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 4425 | in a ULONGEST variable. */ |
c906108c | 4426 | ULONGEST mask = 1; |
911c95a5 | 4427 | mask = (mask << address_size) - 1; |
c906108c SS |
4428 | addr &= mask; |
4429 | } | |
4430 | return addr; | |
4431 | } | |
4432 | ||
a31ea83d DJ |
4433 | /* Convert BUFFER, binary data at least LEN bytes long, into escaped |
4434 | binary data in OUT_BUF. Set *OUT_LEN to the length of the data | |
4435 | encoded in OUT_BUF, and return the number of bytes in OUT_BUF | |
4436 | (which may be more than *OUT_LEN due to escape characters). The | |
4437 | total number of bytes in the output buffer will be at most | |
4438 | OUT_MAXLEN. */ | |
4439 | ||
4440 | static int | |
4441 | remote_escape_output (const gdb_byte *buffer, int len, | |
4442 | gdb_byte *out_buf, int *out_len, | |
4443 | int out_maxlen) | |
4444 | { | |
4445 | int input_index, output_index; | |
4446 | ||
4447 | output_index = 0; | |
4448 | for (input_index = 0; input_index < len; input_index++) | |
4449 | { | |
4450 | gdb_byte b = buffer[input_index]; | |
4451 | ||
4452 | if (b == '$' || b == '#' || b == '}') | |
4453 | { | |
4454 | /* These must be escaped. */ | |
4455 | if (output_index + 2 > out_maxlen) | |
4456 | break; | |
4457 | out_buf[output_index++] = '}'; | |
4458 | out_buf[output_index++] = b ^ 0x20; | |
4459 | } | |
4460 | else | |
4461 | { | |
4462 | if (output_index + 1 > out_maxlen) | |
4463 | break; | |
4464 | out_buf[output_index++] = b; | |
4465 | } | |
4466 | } | |
4467 | ||
4468 | *out_len = input_index; | |
4469 | return output_index; | |
4470 | } | |
4471 | ||
0876f84a DJ |
4472 | /* Convert BUFFER, escaped data LEN bytes long, into binary data |
4473 | in OUT_BUF. Return the number of bytes written to OUT_BUF. | |
4474 | Raise an error if the total number of bytes exceeds OUT_MAXLEN. | |
4475 | ||
4476 | This function reverses remote_escape_output. It allows more | |
4477 | escaped characters than that function does, in particular because | |
4478 | '*' must be escaped to avoid the run-length encoding processing | |
4479 | in reading packets. */ | |
4480 | ||
4481 | static int | |
4482 | remote_unescape_input (const gdb_byte *buffer, int len, | |
4483 | gdb_byte *out_buf, int out_maxlen) | |
4484 | { | |
4485 | int input_index, output_index; | |
4486 | int escaped; | |
4487 | ||
4488 | output_index = 0; | |
4489 | escaped = 0; | |
4490 | for (input_index = 0; input_index < len; input_index++) | |
4491 | { | |
4492 | gdb_byte b = buffer[input_index]; | |
4493 | ||
4494 | if (output_index + 1 > out_maxlen) | |
4495 | { | |
4496 | warning (_("Received too much data from remote target;" | |
4497 | " ignoring overflow.")); | |
4498 | return output_index; | |
4499 | } | |
4500 | ||
4501 | if (escaped) | |
4502 | { | |
4503 | out_buf[output_index++] = b ^ 0x20; | |
4504 | escaped = 0; | |
4505 | } | |
4506 | else if (b == '}') | |
4507 | escaped = 1; | |
4508 | else | |
4509 | out_buf[output_index++] = b; | |
4510 | } | |
4511 | ||
4512 | if (escaped) | |
4513 | error (_("Unmatched escape character in target response.")); | |
4514 | ||
4515 | return output_index; | |
4516 | } | |
4517 | ||
c906108c SS |
4518 | /* Determine whether the remote target supports binary downloading. |
4519 | This is accomplished by sending a no-op memory write of zero length | |
4520 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
4521 | the whole packet, since many stubs strip the eighth bit and |
4522 | subsequently compute a wrong checksum, which causes real havoc with | |
4523 | remote_write_bytes. | |
7a292a7a | 4524 | |
96baa820 JM |
4525 | NOTE: This can still lose if the serial line is not eight-bit |
4526 | clean. In cases like this, the user should clear "remote | |
23860348 | 4527 | X-packet". */ |
96baa820 | 4528 | |
c906108c | 4529 | static void |
fba45db2 | 4530 | check_binary_download (CORE_ADDR addr) |
c906108c | 4531 | { |
d01949b6 | 4532 | struct remote_state *rs = get_remote_state (); |
24b06219 | 4533 | |
444abaca | 4534 | switch (remote_protocol_packets[PACKET_X].support) |
c906108c | 4535 | { |
96baa820 JM |
4536 | case PACKET_DISABLE: |
4537 | break; | |
4538 | case PACKET_ENABLE: | |
4539 | break; | |
4540 | case PACKET_SUPPORT_UNKNOWN: | |
4541 | { | |
96baa820 | 4542 | char *p; |
802188a7 | 4543 | |
2e9f7625 | 4544 | p = rs->buf; |
96baa820 JM |
4545 | *p++ = 'X'; |
4546 | p += hexnumstr (p, (ULONGEST) addr); | |
4547 | *p++ = ','; | |
4548 | p += hexnumstr (p, (ULONGEST) 0); | |
4549 | *p++ = ':'; | |
4550 | *p = '\0'; | |
802188a7 | 4551 | |
2e9f7625 | 4552 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 4553 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 4554 | |
2e9f7625 | 4555 | if (rs->buf[0] == '\0') |
96baa820 JM |
4556 | { |
4557 | if (remote_debug) | |
4558 | fprintf_unfiltered (gdb_stdlog, | |
4559 | "binary downloading NOT suppported by target\n"); | |
444abaca | 4560 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
4561 | } |
4562 | else | |
4563 | { | |
4564 | if (remote_debug) | |
4565 | fprintf_unfiltered (gdb_stdlog, | |
4566 | "binary downloading suppported by target\n"); | |
444abaca | 4567 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
4568 | } |
4569 | break; | |
4570 | } | |
c906108c SS |
4571 | } |
4572 | } | |
4573 | ||
4574 | /* Write memory data directly to the remote machine. | |
4575 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 4576 | HEADER is the starting part of the packet. |
c906108c SS |
4577 | MEMADDR is the address in the remote memory space. |
4578 | MYADDR is the address of the buffer in our space. | |
4579 | LEN is the number of bytes. | |
a76d924d DJ |
4580 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
4581 | should send data as binary ('X'), or hex-encoded ('M'). | |
4582 | ||
4583 | The function creates packet of the form | |
4584 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
4585 | ||
4586 | where encoding of <DATA> is termined by PACKET_FORMAT. | |
4587 | ||
4588 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
4589 | are omitted. | |
4590 | ||
4591 | Returns the number of bytes transferred, or 0 (setting errno) for | |
23860348 | 4592 | error. Only transfer a single packet. */ |
c906108c | 4593 | |
a76d924d DJ |
4594 | static int |
4595 | remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, | |
4596 | const gdb_byte *myaddr, int len, | |
4597 | char packet_format, int use_length) | |
c906108c | 4598 | { |
6d820c5c | 4599 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 4600 | char *p; |
a76d924d DJ |
4601 | char *plen = NULL; |
4602 | int plenlen = 0; | |
917317f4 JM |
4603 | int todo; |
4604 | int nr_bytes; | |
a257b5bb | 4605 | int payload_size; |
6765f3e5 | 4606 | int payload_length; |
a76d924d DJ |
4607 | int header_length; |
4608 | ||
4609 | if (packet_format != 'X' && packet_format != 'M') | |
4610 | internal_error (__FILE__, __LINE__, | |
4611 | "remote_write_bytes_aux: bad packet format"); | |
c906108c | 4612 | |
b2182ed2 DJ |
4613 | if (len <= 0) |
4614 | return 0; | |
4615 | ||
3de11b2e | 4616 | payload_size = get_memory_write_packet_size (); |
2bc416ba | 4617 | |
6d820c5c DJ |
4618 | /* The packet buffer will be large enough for the payload; |
4619 | get_memory_packet_size ensures this. */ | |
a76d924d | 4620 | rs->buf[0] = '\0'; |
c906108c | 4621 | |
a257b5bb | 4622 | /* Compute the size of the actual payload by subtracting out the |
3de11b2e NS |
4623 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". |
4624 | */ | |
a76d924d DJ |
4625 | payload_size -= strlen ("$,:#NN"); |
4626 | if (!use_length) | |
4627 | /* The comma won't be used. */ | |
4628 | payload_size += 1; | |
4629 | header_length = strlen (header); | |
4630 | payload_size -= header_length; | |
3de11b2e | 4631 | payload_size -= hexnumlen (memaddr); |
c906108c | 4632 | |
a76d924d | 4633 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 4634 | |
a76d924d DJ |
4635 | strcat (rs->buf, header); |
4636 | p = rs->buf + strlen (header); | |
4637 | ||
4638 | /* Compute a best guess of the number of bytes actually transfered. */ | |
4639 | if (packet_format == 'X') | |
c906108c | 4640 | { |
23860348 | 4641 | /* Best guess at number of bytes that will fit. */ |
a257b5bb | 4642 | todo = min (len, payload_size); |
a76d924d DJ |
4643 | if (use_length) |
4644 | payload_size -= hexnumlen (todo); | |
3de11b2e | 4645 | todo = min (todo, payload_size); |
a76d924d DJ |
4646 | } |
4647 | else | |
4648 | { | |
23860348 | 4649 | /* Num bytes that will fit. */ |
a257b5bb | 4650 | todo = min (len, payload_size / 2); |
a76d924d DJ |
4651 | if (use_length) |
4652 | payload_size -= hexnumlen (todo); | |
3de11b2e | 4653 | todo = min (todo, payload_size / 2); |
917317f4 | 4654 | } |
a76d924d | 4655 | |
3de11b2e NS |
4656 | if (todo <= 0) |
4657 | internal_error (__FILE__, __LINE__, | |
4658 | _("minumum packet size too small to write data")); | |
802188a7 | 4659 | |
6765f3e5 DJ |
4660 | /* If we already need another packet, then try to align the end |
4661 | of this packet to a useful boundary. */ | |
4662 | if (todo > 2 * REMOTE_ALIGN_WRITES && todo < len) | |
4663 | todo = ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
4664 | ||
a257b5bb | 4665 | /* Append "<memaddr>". */ |
917317f4 JM |
4666 | memaddr = remote_address_masked (memaddr); |
4667 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 4668 | |
a76d924d DJ |
4669 | if (use_length) |
4670 | { | |
4671 | /* Append ",". */ | |
4672 | *p++ = ','; | |
802188a7 | 4673 | |
a76d924d DJ |
4674 | /* Append <len>. Retain the location/size of <len>. It may need to |
4675 | be adjusted once the packet body has been created. */ | |
4676 | plen = p; | |
4677 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
4678 | p += plenlen; | |
4679 | } | |
a257b5bb AC |
4680 | |
4681 | /* Append ":". */ | |
917317f4 JM |
4682 | *p++ = ':'; |
4683 | *p = '\0'; | |
802188a7 | 4684 | |
a257b5bb | 4685 | /* Append the packet body. */ |
a76d924d | 4686 | if (packet_format == 'X') |
917317f4 | 4687 | { |
917317f4 JM |
4688 | /* Binary mode. Send target system values byte by byte, in |
4689 | increasing byte addresses. Only escape certain critical | |
4690 | characters. */ | |
6765f3e5 DJ |
4691 | payload_length = remote_escape_output (myaddr, todo, p, &nr_bytes, |
4692 | payload_size); | |
4693 | ||
4694 | /* If not all TODO bytes fit, then we'll need another packet. Make | |
9b7194bc DJ |
4695 | a second try to keep the end of the packet aligned. Don't do |
4696 | this if the packet is tiny. */ | |
4697 | if (nr_bytes < todo && nr_bytes > 2 * REMOTE_ALIGN_WRITES) | |
6765f3e5 DJ |
4698 | { |
4699 | int new_nr_bytes; | |
4700 | ||
4701 | new_nr_bytes = (((memaddr + nr_bytes) & ~(REMOTE_ALIGN_WRITES - 1)) | |
4702 | - memaddr); | |
4703 | if (new_nr_bytes != nr_bytes) | |
4704 | payload_length = remote_escape_output (myaddr, new_nr_bytes, | |
4705 | p, &nr_bytes, | |
4706 | payload_size); | |
4707 | } | |
4708 | ||
4709 | p += payload_length; | |
a76d924d | 4710 | if (use_length && nr_bytes < todo) |
c906108c | 4711 | { |
802188a7 | 4712 | /* Escape chars have filled up the buffer prematurely, |
917317f4 JM |
4713 | and we have actually sent fewer bytes than planned. |
4714 | Fix-up the length field of the packet. Use the same | |
4715 | number of characters as before. */ | |
917317f4 JM |
4716 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); |
4717 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 4718 | } |
a76d924d DJ |
4719 | } |
4720 | else | |
4721 | { | |
917317f4 JM |
4722 | /* Normal mode: Send target system values byte by byte, in |
4723 | increasing byte addresses. Each byte is encoded as a two hex | |
4724 | value. */ | |
2644f393 | 4725 | nr_bytes = bin2hex (myaddr, p, todo); |
aa6c0017 | 4726 | p += 2 * nr_bytes; |
c906108c | 4727 | } |
802188a7 | 4728 | |
2e9f7625 | 4729 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 4730 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 4731 | |
2e9f7625 | 4732 | if (rs->buf[0] == 'E') |
917317f4 JM |
4733 | { |
4734 | /* There is no correspondance between what the remote protocol | |
4735 | uses for errors and errno codes. We would like a cleaner way | |
4736 | of representing errors (big enough to include errno codes, | |
4737 | bfd_error codes, and others). But for now just return EIO. */ | |
4738 | errno = EIO; | |
4739 | return 0; | |
4740 | } | |
802188a7 | 4741 | |
23860348 MS |
4742 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send |
4743 | fewer bytes than we'd planned. */ | |
917317f4 | 4744 | return nr_bytes; |
c906108c SS |
4745 | } |
4746 | ||
a76d924d DJ |
4747 | /* Write memory data directly to the remote machine. |
4748 | This does not inform the data cache; the data cache uses this. | |
4749 | MEMADDR is the address in the remote memory space. | |
4750 | MYADDR is the address of the buffer in our space. | |
4751 | LEN is the number of bytes. | |
4752 | ||
4753 | Returns number of bytes transferred, or 0 (setting errno) for | |
4754 | error. Only transfer a single packet. */ | |
4755 | ||
4756 | int | |
4757 | remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, int len) | |
4758 | { | |
4759 | char *packet_format = 0; | |
4760 | ||
4761 | /* Check whether the target supports binary download. */ | |
4762 | check_binary_download (memaddr); | |
4763 | ||
4764 | switch (remote_protocol_packets[PACKET_X].support) | |
4765 | { | |
4766 | case PACKET_ENABLE: | |
4767 | packet_format = "X"; | |
4768 | break; | |
4769 | case PACKET_DISABLE: | |
4770 | packet_format = "M"; | |
4771 | break; | |
4772 | case PACKET_SUPPORT_UNKNOWN: | |
4773 | internal_error (__FILE__, __LINE__, | |
4774 | _("remote_write_bytes: bad internal state")); | |
4775 | default: | |
4776 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
4777 | } | |
4778 | ||
4779 | return remote_write_bytes_aux (packet_format, | |
4780 | memaddr, myaddr, len, packet_format[0], 1); | |
4781 | } | |
4782 | ||
c906108c SS |
4783 | /* Read memory data directly from the remote machine. |
4784 | This does not use the data cache; the data cache uses this. | |
4785 | MEMADDR is the address in the remote memory space. | |
4786 | MYADDR is the address of the buffer in our space. | |
4787 | LEN is the number of bytes. | |
4788 | ||
4789 | Returns number of bytes transferred, or 0 for error. */ | |
4790 | ||
917317f4 JM |
4791 | /* NOTE: cagney/1999-10-18: This function (and its siblings in other |
4792 | remote targets) shouldn't attempt to read the entire buffer. | |
4793 | Instead it should read a single packet worth of data and then | |
4794 | return the byte size of that packet to the caller. The caller (its | |
4795 | caller and its callers caller ;-) already contains code for | |
23860348 | 4796 | handling partial reads. */ |
917317f4 | 4797 | |
449092f6 | 4798 | int |
cfd77fa1 | 4799 | remote_read_bytes (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
c906108c | 4800 | { |
6d820c5c | 4801 | struct remote_state *rs = get_remote_state (); |
23860348 | 4802 | int max_buf_size; /* Max size of packet output buffer. */ |
c906108c SS |
4803 | int origlen; |
4804 | ||
b2182ed2 DJ |
4805 | if (len <= 0) |
4806 | return 0; | |
4807 | ||
11cf8741 | 4808 | max_buf_size = get_memory_read_packet_size (); |
6d820c5c DJ |
4809 | /* The packet buffer will be large enough for the payload; |
4810 | get_memory_packet_size ensures this. */ | |
c906108c SS |
4811 | |
4812 | origlen = len; | |
4813 | while (len > 0) | |
4814 | { | |
c906108c SS |
4815 | char *p; |
4816 | int todo; | |
4817 | int i; | |
4818 | ||
c5aa993b | 4819 | todo = min (len, max_buf_size / 2); /* num bytes that will fit */ |
c906108c SS |
4820 | |
4821 | /* construct "m"<memaddr>","<len>" */ | |
2e9f7625 | 4822 | /* sprintf (rs->buf, "m%lx,%x", (unsigned long) memaddr, todo); */ |
c906108c | 4823 | memaddr = remote_address_masked (memaddr); |
2e9f7625 | 4824 | p = rs->buf; |
c906108c SS |
4825 | *p++ = 'm'; |
4826 | p += hexnumstr (p, (ULONGEST) memaddr); | |
4827 | *p++ = ','; | |
4828 | p += hexnumstr (p, (ULONGEST) todo); | |
4829 | *p = '\0'; | |
4830 | ||
2e9f7625 | 4831 | putpkt (rs->buf); |
6d820c5c | 4832 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 4833 | |
2e9f7625 DJ |
4834 | if (rs->buf[0] == 'E' |
4835 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
4836 | && rs->buf[3] == '\0') | |
c906108c | 4837 | { |
23860348 MS |
4838 | /* There is no correspondance between what the remote |
4839 | protocol uses for errors and errno codes. We would like | |
4840 | a cleaner way of representing errors (big enough to | |
4841 | include errno codes, bfd_error codes, and others). But | |
4842 | for now just return EIO. */ | |
c906108c SS |
4843 | errno = EIO; |
4844 | return 0; | |
4845 | } | |
4846 | ||
c5aa993b JM |
4847 | /* Reply describes memory byte by byte, |
4848 | each byte encoded as two hex characters. */ | |
c906108c | 4849 | |
2e9f7625 | 4850 | p = rs->buf; |
30559e10 | 4851 | if ((i = hex2bin (p, myaddr, todo)) < todo) |
c906108c | 4852 | { |
30559e10 | 4853 | /* Reply is short. This means that we were able to read |
23860348 | 4854 | only part of what we wanted to. */ |
30559e10 | 4855 | return i + (origlen - len); |
c906108c SS |
4856 | } |
4857 | myaddr += todo; | |
4858 | memaddr += todo; | |
4859 | len -= todo; | |
4860 | } | |
4861 | return origlen; | |
4862 | } | |
4863 | \f | |
4864 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
23860348 MS |
4865 | transferring to or from debugger address BUFFER. Write to inferior |
4866 | if SHOULD_WRITE is nonzero. Returns length of data written or | |
4867 | read; 0 for error. TARGET is unused. */ | |
392a587b | 4868 | |
c906108c | 4869 | static int |
961cb7b5 | 4870 | remote_xfer_memory (CORE_ADDR mem_addr, gdb_byte *buffer, int mem_len, |
0a65a603 | 4871 | int should_write, struct mem_attrib *attrib, |
29e57380 | 4872 | struct target_ops *target) |
c906108c | 4873 | { |
4930751a C |
4874 | int res; |
4875 | ||
82f73884 PA |
4876 | set_general_thread (inferior_ptid); |
4877 | ||
4930751a | 4878 | if (should_write) |
b2182ed2 | 4879 | res = remote_write_bytes (mem_addr, buffer, mem_len); |
4930751a | 4880 | else |
b2182ed2 | 4881 | res = remote_read_bytes (mem_addr, buffer, mem_len); |
4930751a C |
4882 | |
4883 | return res; | |
c906108c SS |
4884 | } |
4885 | ||
a76d924d DJ |
4886 | /* Sends a packet with content determined by the printf format string |
4887 | FORMAT and the remaining arguments, then gets the reply. Returns | |
4888 | whether the packet was a success, a failure, or unknown. */ | |
4889 | ||
4890 | enum packet_result | |
4891 | remote_send_printf (const char *format, ...) | |
4892 | { | |
4893 | struct remote_state *rs = get_remote_state (); | |
4894 | int max_size = get_remote_packet_size (); | |
4895 | ||
4896 | va_list ap; | |
4897 | va_start (ap, format); | |
4898 | ||
4899 | rs->buf[0] = '\0'; | |
4900 | if (vsnprintf (rs->buf, max_size, format, ap) >= max_size) | |
4901 | internal_error (__FILE__, __LINE__, "Too long remote packet."); | |
4902 | ||
4903 | if (putpkt (rs->buf) < 0) | |
4904 | error (_("Communication problem with target.")); | |
4905 | ||
4906 | rs->buf[0] = '\0'; | |
4907 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4908 | ||
4909 | return packet_check_result (rs->buf); | |
4910 | } | |
4911 | ||
4912 | static void | |
4913 | restore_remote_timeout (void *p) | |
4914 | { | |
4915 | int value = *(int *)p; | |
4916 | remote_timeout = value; | |
4917 | } | |
4918 | ||
4919 | /* Flash writing can take quite some time. We'll set | |
4920 | effectively infinite timeout for flash operations. | |
4921 | In future, we'll need to decide on a better approach. */ | |
4922 | static const int remote_flash_timeout = 1000; | |
4923 | ||
4924 | static void | |
4925 | remote_flash_erase (struct target_ops *ops, | |
4926 | ULONGEST address, LONGEST length) | |
4927 | { | |
4928 | int saved_remote_timeout = remote_timeout; | |
4929 | enum packet_result ret; | |
4930 | ||
4931 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
4932 | &saved_remote_timeout); | |
4933 | remote_timeout = remote_flash_timeout; | |
4934 | ||
4935 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
4936 | paddr (address), | |
4937 | phex (length, 4)); | |
4938 | switch (ret) | |
4939 | { | |
4940 | case PACKET_UNKNOWN: | |
4941 | error (_("Remote target does not support flash erase")); | |
4942 | case PACKET_ERROR: | |
4943 | error (_("Error erasing flash with vFlashErase packet")); | |
4944 | default: | |
4945 | break; | |
4946 | } | |
4947 | ||
4948 | do_cleanups (back_to); | |
4949 | } | |
4950 | ||
4951 | static LONGEST | |
4952 | remote_flash_write (struct target_ops *ops, | |
4953 | ULONGEST address, LONGEST length, | |
4954 | const gdb_byte *data) | |
4955 | { | |
4956 | int saved_remote_timeout = remote_timeout; | |
4957 | int ret; | |
4958 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
4959 | &saved_remote_timeout); | |
4960 | ||
4961 | remote_timeout = remote_flash_timeout; | |
4962 | ret = remote_write_bytes_aux ("vFlashWrite:", address, data, length, 'X', 0); | |
4963 | do_cleanups (back_to); | |
4964 | ||
4965 | return ret; | |
4966 | } | |
4967 | ||
4968 | static void | |
4969 | remote_flash_done (struct target_ops *ops) | |
4970 | { | |
4971 | int saved_remote_timeout = remote_timeout; | |
4972 | int ret; | |
4973 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
4974 | &saved_remote_timeout); | |
4975 | ||
4976 | remote_timeout = remote_flash_timeout; | |
4977 | ret = remote_send_printf ("vFlashDone"); | |
4978 | do_cleanups (back_to); | |
4979 | ||
4980 | switch (ret) | |
4981 | { | |
4982 | case PACKET_UNKNOWN: | |
4983 | error (_("Remote target does not support vFlashDone")); | |
4984 | case PACKET_ERROR: | |
4985 | error (_("Error finishing flash operation")); | |
4986 | default: | |
4987 | break; | |
4988 | } | |
4989 | } | |
4990 | ||
c906108c | 4991 | static void |
fba45db2 | 4992 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
4993 | { |
4994 | puts_filtered ("Debugging a target over a serial line.\n"); | |
4995 | } | |
4996 | \f | |
4997 | /* Stuff for dealing with the packets which are part of this protocol. | |
4998 | See comment at top of file for details. */ | |
4999 | ||
0876f84a | 5000 | /* Read a single character from the remote end. */ |
c906108c SS |
5001 | |
5002 | static int | |
fba45db2 | 5003 | readchar (int timeout) |
c906108c SS |
5004 | { |
5005 | int ch; | |
5006 | ||
2cd58942 | 5007 | ch = serial_readchar (remote_desc, timeout); |
c906108c | 5008 | |
2acceee2 | 5009 | if (ch >= 0) |
0876f84a | 5010 | return ch; |
2acceee2 JM |
5011 | |
5012 | switch ((enum serial_rc) ch) | |
c906108c SS |
5013 | { |
5014 | case SERIAL_EOF: | |
ce5ce7ed | 5015 | pop_target (); |
8a3fe4f8 | 5016 | error (_("Remote connection closed")); |
2acceee2 | 5017 | /* no return */ |
c906108c | 5018 | case SERIAL_ERROR: |
e2e0b3e5 | 5019 | perror_with_name (_("Remote communication error")); |
2acceee2 | 5020 | /* no return */ |
c906108c | 5021 | case SERIAL_TIMEOUT: |
2acceee2 | 5022 | break; |
c906108c | 5023 | } |
2acceee2 | 5024 | return ch; |
c906108c SS |
5025 | } |
5026 | ||
6d820c5c DJ |
5027 | /* Send the command in *BUF to the remote machine, and read the reply |
5028 | into *BUF. Report an error if we get an error reply. Resize | |
5029 | *BUF using xrealloc if necessary to hold the result, and update | |
5030 | *SIZEOF_BUF. */ | |
c906108c SS |
5031 | |
5032 | static void | |
6d820c5c DJ |
5033 | remote_send (char **buf, |
5034 | long *sizeof_buf) | |
c906108c | 5035 | { |
6d820c5c | 5036 | putpkt (*buf); |
c2d11a7d | 5037 | getpkt (buf, sizeof_buf, 0); |
c906108c | 5038 | |
6d820c5c DJ |
5039 | if ((*buf)[0] == 'E') |
5040 | error (_("Remote failure reply: %s"), *buf); | |
c906108c SS |
5041 | } |
5042 | ||
5043 | /* Display a null-terminated packet on stdout, for debugging, using C | |
5044 | string notation. */ | |
5045 | ||
5046 | static void | |
fba45db2 | 5047 | print_packet (char *buf) |
c906108c SS |
5048 | { |
5049 | puts_filtered ("\""); | |
43e526b9 | 5050 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
5051 | puts_filtered ("\""); |
5052 | } | |
5053 | ||
5054 | int | |
fba45db2 | 5055 | putpkt (char *buf) |
c906108c SS |
5056 | { |
5057 | return putpkt_binary (buf, strlen (buf)); | |
5058 | } | |
5059 | ||
5060 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 5061 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 5062 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
5063 | and for a possible /0 if we are debugging (remote_debug) and want |
5064 | to print the sent packet as a string. */ | |
c906108c SS |
5065 | |
5066 | static int | |
fba45db2 | 5067 | putpkt_binary (char *buf, int cnt) |
c906108c | 5068 | { |
2d717e4f | 5069 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
5070 | int i; |
5071 | unsigned char csum = 0; | |
11cf8741 | 5072 | char *buf2 = alloca (cnt + 6); |
085dd6e6 | 5073 | |
c906108c SS |
5074 | int ch; |
5075 | int tcount = 0; | |
5076 | char *p; | |
5077 | ||
e24a49d8 PA |
5078 | /* Catch cases like trying to read memory or listing threads while |
5079 | we're waiting for a stop reply. The remote server wouldn't be | |
5080 | ready to handle this request, so we'd hang and timeout. We don't | |
5081 | have to worry about this in synchronous mode, because in that | |
5082 | case it's not possible to issue a command while the target is | |
5083 | running. */ | |
5084 | if (target_can_async_p () && rs->waiting_for_stop_reply) | |
5085 | error (_("Cannot execute this command while the target is running.")); | |
5086 | ||
2d717e4f DJ |
5087 | /* We're sending out a new packet. Make sure we don't look at a |
5088 | stale cached response. */ | |
5089 | rs->cached_wait_status = 0; | |
5090 | ||
c906108c SS |
5091 | /* Copy the packet into buffer BUF2, encapsulating it |
5092 | and giving it a checksum. */ | |
5093 | ||
c906108c SS |
5094 | p = buf2; |
5095 | *p++ = '$'; | |
5096 | ||
5097 | for (i = 0; i < cnt; i++) | |
5098 | { | |
5099 | csum += buf[i]; | |
5100 | *p++ = buf[i]; | |
5101 | } | |
5102 | *p++ = '#'; | |
5103 | *p++ = tohex ((csum >> 4) & 0xf); | |
5104 | *p++ = tohex (csum & 0xf); | |
5105 | ||
5106 | /* Send it over and over until we get a positive ack. */ | |
5107 | ||
5108 | while (1) | |
5109 | { | |
5110 | int started_error_output = 0; | |
5111 | ||
5112 | if (remote_debug) | |
5113 | { | |
5114 | *p = '\0'; | |
43e526b9 JM |
5115 | fprintf_unfiltered (gdb_stdlog, "Sending packet: "); |
5116 | fputstrn_unfiltered (buf2, p - buf2, 0, gdb_stdlog); | |
d4f3574e | 5117 | fprintf_unfiltered (gdb_stdlog, "..."); |
0f71a2f6 | 5118 | gdb_flush (gdb_stdlog); |
c906108c | 5119 | } |
2cd58942 | 5120 | if (serial_write (remote_desc, buf2, p - buf2)) |
e2e0b3e5 | 5121 | perror_with_name (_("putpkt: write failed")); |
c906108c | 5122 | |
a6f3e723 SL |
5123 | /* If this is a no acks version of the remote protocol, send the |
5124 | packet and move on. */ | |
5125 | if (rs->noack_mode) | |
5126 | break; | |
5127 | ||
23860348 | 5128 | /* Read until either a timeout occurs (-2) or '+' is read. */ |
c906108c SS |
5129 | while (1) |
5130 | { | |
5131 | ch = readchar (remote_timeout); | |
5132 | ||
c5aa993b | 5133 | if (remote_debug) |
c906108c SS |
5134 | { |
5135 | switch (ch) | |
5136 | { | |
5137 | case '+': | |
1216fa2c | 5138 | case '-': |
c906108c SS |
5139 | case SERIAL_TIMEOUT: |
5140 | case '$': | |
5141 | if (started_error_output) | |
5142 | { | |
5143 | putchar_unfiltered ('\n'); | |
5144 | started_error_output = 0; | |
5145 | } | |
5146 | } | |
5147 | } | |
5148 | ||
5149 | switch (ch) | |
5150 | { | |
5151 | case '+': | |
5152 | if (remote_debug) | |
0f71a2f6 | 5153 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 5154 | return 1; |
1216fa2c AC |
5155 | case '-': |
5156 | if (remote_debug) | |
5157 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
c906108c | 5158 | case SERIAL_TIMEOUT: |
c5aa993b | 5159 | tcount++; |
c906108c SS |
5160 | if (tcount > 3) |
5161 | return 0; | |
23860348 | 5162 | break; /* Retransmit buffer. */ |
c906108c SS |
5163 | case '$': |
5164 | { | |
40e3f985 | 5165 | if (remote_debug) |
2bc416ba | 5166 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 5167 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
5168 | /* It's probably an old response sent because an ACK |
5169 | was lost. Gobble up the packet and ack it so it | |
5170 | doesn't get retransmitted when we resend this | |
5171 | packet. */ | |
6d820c5c | 5172 | skip_frame (); |
d6f7abdf | 5173 | serial_write (remote_desc, "+", 1); |
23860348 | 5174 | continue; /* Now, go look for +. */ |
c906108c SS |
5175 | } |
5176 | default: | |
5177 | if (remote_debug) | |
5178 | { | |
5179 | if (!started_error_output) | |
5180 | { | |
5181 | started_error_output = 1; | |
0f71a2f6 | 5182 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 5183 | } |
0f71a2f6 | 5184 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
5185 | } |
5186 | continue; | |
5187 | } | |
23860348 | 5188 | break; /* Here to retransmit. */ |
c906108c SS |
5189 | } |
5190 | ||
5191 | #if 0 | |
5192 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
5193 | able to get out next time we call QUIT, without anything as |
5194 | violent as interrupt_query. If we want to provide a way out of | |
5195 | here without getting to the next QUIT, it should be based on | |
5196 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
5197 | if (quit_flag) |
5198 | { | |
5199 | quit_flag = 0; | |
5200 | interrupt_query (); | |
5201 | } | |
5202 | #endif | |
5203 | } | |
a6f3e723 | 5204 | return 0; |
c906108c SS |
5205 | } |
5206 | ||
6d820c5c DJ |
5207 | /* Come here after finding the start of a frame when we expected an |
5208 | ack. Do our best to discard the rest of this packet. */ | |
5209 | ||
5210 | static void | |
5211 | skip_frame (void) | |
5212 | { | |
5213 | int c; | |
5214 | ||
5215 | while (1) | |
5216 | { | |
5217 | c = readchar (remote_timeout); | |
5218 | switch (c) | |
5219 | { | |
5220 | case SERIAL_TIMEOUT: | |
5221 | /* Nothing we can do. */ | |
5222 | return; | |
5223 | case '#': | |
5224 | /* Discard the two bytes of checksum and stop. */ | |
5225 | c = readchar (remote_timeout); | |
5226 | if (c >= 0) | |
5227 | c = readchar (remote_timeout); | |
5228 | ||
5229 | return; | |
5230 | case '*': /* Run length encoding. */ | |
5231 | /* Discard the repeat count. */ | |
5232 | c = readchar (remote_timeout); | |
5233 | if (c < 0) | |
5234 | return; | |
5235 | break; | |
5236 | default: | |
5237 | /* A regular character. */ | |
5238 | break; | |
5239 | } | |
5240 | } | |
5241 | } | |
5242 | ||
c906108c | 5243 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
5244 | into *BUF, verifying the checksum, length, and handling run-length |
5245 | compression. NUL terminate the buffer. If there is not enough room, | |
5246 | expand *BUF using xrealloc. | |
c906108c | 5247 | |
c2d11a7d JM |
5248 | Returns -1 on error, number of characters in buffer (ignoring the |
5249 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 5250 | SERIAL status indications). */ |
c2d11a7d JM |
5251 | |
5252 | static long | |
6d820c5c DJ |
5253 | read_frame (char **buf_p, |
5254 | long *sizeof_buf) | |
c906108c SS |
5255 | { |
5256 | unsigned char csum; | |
c2d11a7d | 5257 | long bc; |
c906108c | 5258 | int c; |
6d820c5c | 5259 | char *buf = *buf_p; |
a6f3e723 | 5260 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
5261 | |
5262 | csum = 0; | |
c2d11a7d | 5263 | bc = 0; |
c906108c SS |
5264 | |
5265 | while (1) | |
5266 | { | |
5267 | c = readchar (remote_timeout); | |
c906108c SS |
5268 | switch (c) |
5269 | { | |
5270 | case SERIAL_TIMEOUT: | |
5271 | if (remote_debug) | |
0f71a2f6 | 5272 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 5273 | return -1; |
c906108c SS |
5274 | case '$': |
5275 | if (remote_debug) | |
0f71a2f6 JM |
5276 | fputs_filtered ("Saw new packet start in middle of old one\n", |
5277 | gdb_stdlog); | |
23860348 | 5278 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
5279 | case '#': |
5280 | { | |
5281 | unsigned char pktcsum; | |
e1b09194 AC |
5282 | int check_0 = 0; |
5283 | int check_1 = 0; | |
c906108c | 5284 | |
c2d11a7d | 5285 | buf[bc] = '\0'; |
c906108c | 5286 | |
e1b09194 AC |
5287 | check_0 = readchar (remote_timeout); |
5288 | if (check_0 >= 0) | |
5289 | check_1 = readchar (remote_timeout); | |
802188a7 | 5290 | |
e1b09194 AC |
5291 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
5292 | { | |
5293 | if (remote_debug) | |
2bc416ba | 5294 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 5295 | gdb_stdlog); |
e1b09194 AC |
5296 | return -1; |
5297 | } | |
5298 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
5299 | { |
5300 | if (remote_debug) | |
2bc416ba | 5301 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 5302 | gdb_stdlog); |
40e3f985 FN |
5303 | return -1; |
5304 | } | |
c906108c | 5305 | |
a6f3e723 SL |
5306 | /* Don't recompute the checksum; with no ack packets we |
5307 | don't have any way to indicate a packet retransmission | |
5308 | is necessary. */ | |
5309 | if (rs->noack_mode) | |
5310 | return bc; | |
5311 | ||
e1b09194 | 5312 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 5313 | if (csum == pktcsum) |
c2d11a7d | 5314 | return bc; |
c906108c | 5315 | |
c5aa993b | 5316 | if (remote_debug) |
c906108c | 5317 | { |
0f71a2f6 | 5318 | fprintf_filtered (gdb_stdlog, |
c5aa993b | 5319 | "Bad checksum, sentsum=0x%x, csum=0x%x, buf=", |
0f71a2f6 | 5320 | pktcsum, csum); |
0876f84a | 5321 | fputstrn_filtered (buf, bc, 0, gdb_stdlog); |
0f71a2f6 | 5322 | fputs_filtered ("\n", gdb_stdlog); |
c906108c | 5323 | } |
c2d11a7d | 5324 | /* Number of characters in buffer ignoring trailing |
23860348 | 5325 | NULL. */ |
c2d11a7d | 5326 | return -1; |
c906108c | 5327 | } |
23860348 | 5328 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
5329 | { |
5330 | int repeat; | |
5331 | csum += c; | |
c906108c | 5332 | |
b4501125 AC |
5333 | c = readchar (remote_timeout); |
5334 | csum += c; | |
23860348 | 5335 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 5336 | |
23860348 | 5337 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 5338 | |
6d820c5c | 5339 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 5340 | { |
6d820c5c DJ |
5341 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
5342 | { | |
5343 | /* Make some more room in the buffer. */ | |
5344 | *sizeof_buf += repeat; | |
5345 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
5346 | buf = *buf_p; | |
5347 | } | |
5348 | ||
c2d11a7d JM |
5349 | memset (&buf[bc], buf[bc - 1], repeat); |
5350 | bc += repeat; | |
c2c6d25f JM |
5351 | continue; |
5352 | } | |
5353 | ||
c2d11a7d | 5354 | buf[bc] = '\0'; |
6d820c5c | 5355 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 5356 | return -1; |
c2c6d25f | 5357 | } |
c906108c | 5358 | default: |
6d820c5c | 5359 | if (bc >= *sizeof_buf - 1) |
c906108c | 5360 | { |
6d820c5c DJ |
5361 | /* Make some more room in the buffer. */ |
5362 | *sizeof_buf *= 2; | |
5363 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
5364 | buf = *buf_p; | |
c906108c SS |
5365 | } |
5366 | ||
6d820c5c DJ |
5367 | buf[bc++] = c; |
5368 | csum += c; | |
5369 | continue; | |
c906108c SS |
5370 | } |
5371 | } | |
5372 | } | |
5373 | ||
5374 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
5375 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
5376 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
5377 | rather than timing out; this is used (in synchronous mode) to wait | |
5378 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
5379 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
5380 | don't have to change all the calls to getpkt to deal with the | |
5381 | return value, because at the moment I don't know what the right | |
23860348 | 5382 | thing to do it for those. */ |
c906108c | 5383 | void |
6d820c5c DJ |
5384 | getpkt (char **buf, |
5385 | long *sizeof_buf, | |
c2d11a7d | 5386 | int forever) |
d9fcf2fb JM |
5387 | { |
5388 | int timed_out; | |
5389 | ||
5390 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
5391 | } | |
5392 | ||
5393 | ||
5394 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
5395 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
5396 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
5397 | rather than timing out; this is used (in synchronous mode) to wait | |
5398 | for a target that is is executing user code to stop. If FOREVER == | |
5399 | 0, this function is allowed to time out gracefully and return an | |
0876f84a DJ |
5400 | indication of this to the caller. Otherwise return the number |
5401 | of bytes read. */ | |
3172dc30 | 5402 | static int |
6d820c5c | 5403 | getpkt_sane (char **buf, long *sizeof_buf, int forever) |
c906108c | 5404 | { |
2d717e4f | 5405 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
5406 | int c; |
5407 | int tries; | |
5408 | int timeout; | |
5409 | int val; | |
5410 | ||
2d717e4f DJ |
5411 | /* We're reading a new response. Make sure we don't look at a |
5412 | previously cached response. */ | |
5413 | rs->cached_wait_status = 0; | |
5414 | ||
6d820c5c | 5415 | strcpy (*buf, "timeout"); |
c906108c SS |
5416 | |
5417 | if (forever) | |
5418 | { | |
c906108c | 5419 | timeout = watchdog > 0 ? watchdog : -1; |
c906108c SS |
5420 | } |
5421 | ||
5422 | else | |
5423 | timeout = remote_timeout; | |
5424 | ||
5425 | #define MAX_TRIES 3 | |
5426 | ||
5427 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
5428 | { | |
5429 | /* This can loop forever if the remote side sends us characters | |
23860348 MS |
5430 | continuously, but if it pauses, we'll get a zero from |
5431 | readchar because of timeout. Then we'll count that as a | |
5432 | retry. */ | |
c906108c | 5433 | |
23860348 MS |
5434 | /* Note that we will only wait forever prior to the start of a |
5435 | packet. After that, we expect characters to arrive at a | |
5436 | brisk pace. They should show up within remote_timeout | |
5437 | intervals. */ | |
c906108c SS |
5438 | |
5439 | do | |
5440 | { | |
5441 | c = readchar (timeout); | |
5442 | ||
5443 | if (c == SERIAL_TIMEOUT) | |
5444 | { | |
23860348 | 5445 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 5446 | { |
2acceee2 | 5447 | QUIT; |
ce5ce7ed | 5448 | pop_target (); |
489eaeba | 5449 | error (_("Watchdog timeout has expired. Target detached.")); |
c906108c | 5450 | } |
c906108c | 5451 | if (remote_debug) |
0f71a2f6 | 5452 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c SS |
5453 | goto retry; |
5454 | } | |
5455 | } | |
5456 | while (c != '$'); | |
5457 | ||
5458 | /* We've found the start of a packet, now collect the data. */ | |
5459 | ||
c2d11a7d | 5460 | val = read_frame (buf, sizeof_buf); |
c906108c | 5461 | |
c2d11a7d | 5462 | if (val >= 0) |
c906108c SS |
5463 | { |
5464 | if (remote_debug) | |
43e526b9 JM |
5465 | { |
5466 | fprintf_unfiltered (gdb_stdlog, "Packet received: "); | |
0876f84a | 5467 | fputstrn_unfiltered (*buf, val, 0, gdb_stdlog); |
43e526b9 JM |
5468 | fprintf_unfiltered (gdb_stdlog, "\n"); |
5469 | } | |
a6f3e723 SL |
5470 | |
5471 | /* Skip the ack char if we're in no-ack mode. */ | |
5472 | if (!rs->noack_mode) | |
5473 | serial_write (remote_desc, "+", 1); | |
0876f84a | 5474 | return val; |
c906108c SS |
5475 | } |
5476 | ||
5477 | /* Try the whole thing again. */ | |
5478 | retry: | |
a6f3e723 SL |
5479 | /* Skip the nack char if we're in no-ack mode. */ |
5480 | if (!rs->noack_mode) | |
5481 | serial_write (remote_desc, "-", 1); | |
c906108c SS |
5482 | } |
5483 | ||
2bc416ba | 5484 | /* We have tried hard enough, and just can't receive the packet. |
23860348 | 5485 | Give up. */ |
c906108c | 5486 | |
a3f17187 | 5487 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); |
a6f3e723 SL |
5488 | |
5489 | /* Skip the ack char if we're in no-ack mode. */ | |
5490 | if (!rs->noack_mode) | |
5491 | serial_write (remote_desc, "+", 1); | |
0876f84a | 5492 | return -1; |
c906108c SS |
5493 | } |
5494 | \f | |
5495 | static void | |
fba45db2 | 5496 | remote_kill (void) |
43ff13b4 | 5497 | { |
23860348 MS |
5498 | /* Use catch_errors so the user can quit from gdb even when we |
5499 | aren't on speaking terms with the remote system. */ | |
c5aa993b | 5500 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
5501 | |
5502 | /* Don't wait for it to die. I'm not really sure it matters whether | |
5503 | we do or not. For the existing stubs, kill is a noop. */ | |
5504 | target_mourn_inferior (); | |
5505 | } | |
5506 | ||
82f73884 PA |
5507 | static int |
5508 | remote_vkill (int pid, struct remote_state *rs) | |
5509 | { | |
5510 | if (remote_protocol_packets[PACKET_vKill].support == PACKET_DISABLE) | |
5511 | return -1; | |
5512 | ||
5513 | /* Tell the remote target to detach. */ | |
5514 | sprintf (rs->buf, "vKill;%x", pid); | |
5515 | putpkt (rs->buf); | |
5516 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5517 | ||
5518 | if (packet_ok (rs->buf, | |
5519 | &remote_protocol_packets[PACKET_vKill]) == PACKET_OK) | |
5520 | return 0; | |
5521 | else if (remote_protocol_packets[PACKET_vKill].support == PACKET_DISABLE) | |
5522 | return -1; | |
5523 | else | |
5524 | return 1; | |
5525 | } | |
5526 | ||
5527 | static void | |
5528 | extended_remote_kill (void) | |
5529 | { | |
5530 | int res; | |
5531 | int pid = ptid_get_pid (inferior_ptid); | |
5532 | struct remote_state *rs = get_remote_state (); | |
5533 | ||
5534 | res = remote_vkill (pid, rs); | |
5535 | if (res == -1 && !remote_multi_process_p (rs)) | |
5536 | { | |
5537 | /* Don't try 'k' on a multi-process aware stub -- it has no way | |
5538 | to specify the pid. */ | |
5539 | ||
5540 | putpkt ("k"); | |
5541 | #if 0 | |
5542 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5543 | if (rs->buf[0] != 'O' || rs->buf[0] != 'K') | |
5544 | res = 1; | |
5545 | #else | |
5546 | /* Don't wait for it to die. I'm not really sure it matters whether | |
5547 | we do or not. For the existing stubs, kill is a noop. */ | |
5548 | res = 0; | |
5549 | #endif | |
5550 | } | |
5551 | ||
5552 | if (res != 0) | |
5553 | error (_("Can't kill process")); | |
5554 | ||
5555 | delete_inferior (pid); | |
5556 | target_mourn_inferior (); | |
5557 | } | |
5558 | ||
c906108c | 5559 | static void |
fba45db2 | 5560 | remote_mourn (void) |
c906108c SS |
5561 | { |
5562 | remote_mourn_1 (&remote_ops); | |
5563 | } | |
5564 | ||
c906108c SS |
5565 | /* Worker function for remote_mourn. */ |
5566 | static void | |
fba45db2 | 5567 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
5568 | { |
5569 | unpush_target (target); | |
ce5ce7ed PA |
5570 | |
5571 | /* remote_close takes care of cleaning up. */ | |
c906108c SS |
5572 | } |
5573 | ||
82f73884 PA |
5574 | static int |
5575 | select_new_thread_callback (struct thread_info *th, void* data) | |
5576 | { | |
5577 | if (!ptid_equal (th->ptid, minus_one_ptid)) | |
5578 | { | |
5579 | switch_to_thread (th->ptid); | |
5580 | printf_filtered (_("[Switching to %s]\n"), | |
5581 | target_pid_to_str (inferior_ptid)); | |
5582 | return 1; | |
5583 | } | |
5584 | return 0; | |
5585 | } | |
5586 | ||
2d717e4f DJ |
5587 | static void |
5588 | extended_remote_mourn_1 (struct target_ops *target) | |
5589 | { | |
5590 | struct remote_state *rs = get_remote_state (); | |
c906108c | 5591 | |
e24a49d8 PA |
5592 | /* In case we got here due to an error, but we're going to stay |
5593 | connected. */ | |
5594 | rs->waiting_for_stop_reply = 0; | |
5595 | ||
2d717e4f DJ |
5596 | /* Unlike "target remote", we do not want to unpush the target; then |
5597 | the next time the user says "run", we won't be connected. */ | |
5598 | ||
82f73884 | 5599 | if (have_inferiors ()) |
2d717e4f | 5600 | { |
82f73884 PA |
5601 | extern void nullify_last_target_wait_ptid (); |
5602 | /* Multi-process case. The current process has exited, but | |
5603 | there are other processes to debug. Switch to the first | |
5604 | available. */ | |
5605 | iterate_over_threads (select_new_thread_callback, NULL); | |
5606 | nullify_last_target_wait_ptid (); | |
2d717e4f DJ |
5607 | } |
5608 | else | |
5609 | { | |
82f73884 PA |
5610 | struct remote_state *rs = get_remote_state (); |
5611 | ||
5612 | /* Call common code to mark the inferior as not running. */ | |
5613 | generic_mourn_inferior (); | |
5614 | if (!remote_multi_process_p (rs)) | |
5615 | { | |
5616 | /* Check whether the target is running now - some remote stubs | |
5617 | automatically restart after kill. */ | |
5618 | putpkt ("?"); | |
5619 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5620 | ||
5621 | if (rs->buf[0] == 'S' || rs->buf[0] == 'T') | |
5622 | { | |
5623 | /* Assume that the target has been restarted. Set inferior_ptid | |
5624 | so that bits of core GDB realizes there's something here, e.g., | |
5625 | so that the user can say "kill" again. */ | |
5626 | inferior_ptid = magic_null_ptid; | |
5627 | } | |
5628 | else | |
5629 | { | |
5630 | /* Mark this (still pushed) target as not executable until we | |
5631 | restart it. */ | |
5632 | target_mark_exited (target); | |
5633 | } | |
5634 | } | |
5635 | else | |
5636 | /* Always remove execution if this was the last process. */ | |
5637 | target_mark_exited (target); | |
2d717e4f DJ |
5638 | } |
5639 | } | |
c906108c SS |
5640 | |
5641 | static void | |
2d717e4f | 5642 | extended_remote_mourn (void) |
c906108c | 5643 | { |
2d717e4f DJ |
5644 | extended_remote_mourn_1 (&extended_remote_ops); |
5645 | } | |
c906108c | 5646 | |
2d717e4f DJ |
5647 | static int |
5648 | extended_remote_run (char *args) | |
5649 | { | |
5650 | struct remote_state *rs = get_remote_state (); | |
5651 | char *p; | |
5652 | int len; | |
c906108c | 5653 | |
2d717e4f DJ |
5654 | /* If the user has disabled vRun support, or we have detected that |
5655 | support is not available, do not try it. */ | |
5656 | if (remote_protocol_packets[PACKET_vRun].support == PACKET_DISABLE) | |
5657 | return -1; | |
424163ea | 5658 | |
2d717e4f DJ |
5659 | strcpy (rs->buf, "vRun;"); |
5660 | len = strlen (rs->buf); | |
c906108c | 5661 | |
2d717e4f DJ |
5662 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
5663 | error (_("Remote file name too long for run packet")); | |
5664 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf + len, 0); | |
5665 | ||
d1a41061 | 5666 | gdb_assert (args != NULL); |
2d717e4f DJ |
5667 | if (*args) |
5668 | { | |
5669 | struct cleanup *back_to; | |
5670 | int i; | |
5671 | char **argv; | |
5672 | ||
d1a41061 | 5673 | argv = gdb_buildargv (args); |
2d717e4f DJ |
5674 | back_to = make_cleanup ((void (*) (void *)) freeargv, argv); |
5675 | for (i = 0; argv[i] != NULL; i++) | |
5676 | { | |
5677 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
5678 | error (_("Argument list too long for run packet")); | |
5679 | rs->buf[len++] = ';'; | |
5680 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf + len, 0); | |
5681 | } | |
5682 | do_cleanups (back_to); | |
5683 | } | |
5684 | ||
5685 | rs->buf[len++] = '\0'; | |
5686 | ||
5687 | putpkt (rs->buf); | |
5688 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5689 | ||
5690 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun]) == PACKET_OK) | |
5691 | { | |
5692 | /* We have a wait response; we don't need it, though. All is well. */ | |
5693 | return 0; | |
5694 | } | |
5695 | else if (remote_protocol_packets[PACKET_vRun].support == PACKET_DISABLE) | |
5696 | /* It wasn't disabled before, but it is now. */ | |
5697 | return -1; | |
5698 | else | |
5699 | { | |
5700 | if (remote_exec_file[0] == '\0') | |
5701 | error (_("Running the default executable on the remote target failed; " | |
5702 | "try \"set remote exec-file\"?")); | |
5703 | else | |
5704 | error (_("Running \"%s\" on the remote target failed"), | |
5705 | remote_exec_file); | |
5706 | } | |
c906108c SS |
5707 | } |
5708 | ||
2d717e4f DJ |
5709 | /* In the extended protocol we want to be able to do things like |
5710 | "run" and have them basically work as expected. So we need | |
5711 | a special create_inferior function. We support changing the | |
5712 | executable file and the command line arguments, but not the | |
5713 | environment. */ | |
5714 | ||
43ff13b4 | 5715 | static void |
2d717e4f | 5716 | extended_remote_create_inferior_1 (char *exec_file, char *args, |
75c99385 | 5717 | char **env, int from_tty) |
43ff13b4 | 5718 | { |
43ff13b4 | 5719 | /* If running asynchronously, register the target file descriptor |
23860348 | 5720 | with the event loop. */ |
75c99385 | 5721 | if (target_can_async_p ()) |
2acceee2 | 5722 | target_async (inferior_event_handler, 0); |
43ff13b4 JM |
5723 | |
5724 | /* Now restart the remote server. */ | |
2d717e4f DJ |
5725 | if (extended_remote_run (args) == -1) |
5726 | { | |
5727 | /* vRun was not supported. Fail if we need it to do what the | |
5728 | user requested. */ | |
5729 | if (remote_exec_file[0]) | |
5730 | error (_("Remote target does not support \"set remote exec-file\"")); | |
5731 | if (args[0]) | |
5732 | error (_("Remote target does not support \"set args\" or run <ARGS>")); | |
43ff13b4 | 5733 | |
2d717e4f DJ |
5734 | /* Fall back to "R". */ |
5735 | extended_remote_restart (); | |
5736 | } | |
424163ea | 5737 | |
45280a52 DJ |
5738 | /* Clean up from the last time we ran, before we mark the target |
5739 | running again. This will mark breakpoints uninserted, and | |
5740 | get_offsets may insert breakpoints. */ | |
5741 | init_thread_list (); | |
5742 | init_wait_for_inferior (); | |
5743 | ||
2d717e4f | 5744 | /* Now mark the inferior as running before we do anything else. */ |
79d7f229 | 5745 | inferior_ptid = magic_null_ptid; |
c0a2216e | 5746 | |
82f73884 | 5747 | add_inferior (ptid_get_pid (inferior_ptid)); |
c0a2216e PA |
5748 | add_thread_silent (inferior_ptid); |
5749 | ||
75c99385 | 5750 | target_mark_running (&extended_remote_ops); |
2d717e4f DJ |
5751 | |
5752 | /* Get updated offsets, if the stub uses qOffsets. */ | |
5753 | get_offsets (); | |
2d717e4f DJ |
5754 | } |
5755 | ||
5756 | static void | |
5757 | extended_remote_create_inferior (char *exec_file, char *args, | |
5758 | char **env, int from_tty) | |
5759 | { | |
75c99385 | 5760 | extended_remote_create_inferior_1 (exec_file, args, env, from_tty); |
43ff13b4 | 5761 | } |
c906108c | 5762 | \f |
c5aa993b | 5763 | |
8181d85f DJ |
5764 | /* Insert a breakpoint. On targets that have software breakpoint |
5765 | support, we ask the remote target to do the work; on targets | |
5766 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c SS |
5767 | |
5768 | static int | |
8181d85f | 5769 | remote_insert_breakpoint (struct bp_target_info *bp_tgt) |
c906108c | 5770 | { |
d471ea57 AC |
5771 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
5772 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
5773 | fails, and the user has explicitly requested the Z support then | |
23860348 | 5774 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 5775 | |
444abaca | 5776 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 5777 | { |
7c0f6dcc | 5778 | CORE_ADDR addr = bp_tgt->placed_address; |
4fff2411 JZ |
5779 | struct remote_state *rs; |
5780 | char *p; | |
7c0f6dcc | 5781 | int bpsize; |
4fff2411 | 5782 | |
1cf3db46 | 5783 | gdbarch_breakpoint_from_pc (target_gdbarch, &addr, &bpsize); |
4fff2411 JZ |
5784 | |
5785 | rs = get_remote_state (); | |
5786 | p = rs->buf; | |
802188a7 | 5787 | |
96baa820 JM |
5788 | *(p++) = 'Z'; |
5789 | *(p++) = '0'; | |
5790 | *(p++) = ','; | |
7c0f6dcc | 5791 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 5792 | p += hexnumstr (p, addr); |
7c0f6dcc | 5793 | sprintf (p, ",%d", bpsize); |
802188a7 | 5794 | |
6d820c5c DJ |
5795 | putpkt (rs->buf); |
5796 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5797 | |
6d820c5c | 5798 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 5799 | { |
d471ea57 AC |
5800 | case PACKET_ERROR: |
5801 | return -1; | |
5802 | case PACKET_OK: | |
7c0f6dcc JL |
5803 | bp_tgt->placed_address = addr; |
5804 | bp_tgt->placed_size = bpsize; | |
d471ea57 AC |
5805 | return 0; |
5806 | case PACKET_UNKNOWN: | |
5807 | break; | |
96baa820 JM |
5808 | } |
5809 | } | |
c906108c | 5810 | |
8181d85f | 5811 | return memory_insert_breakpoint (bp_tgt); |
c906108c SS |
5812 | } |
5813 | ||
5814 | static int | |
8181d85f | 5815 | remote_remove_breakpoint (struct bp_target_info *bp_tgt) |
c906108c | 5816 | { |
8181d85f | 5817 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 5818 | struct remote_state *rs = get_remote_state (); |
96baa820 JM |
5819 | int bp_size; |
5820 | ||
444abaca | 5821 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 5822 | { |
6d820c5c | 5823 | char *p = rs->buf; |
802188a7 | 5824 | |
96baa820 JM |
5825 | *(p++) = 'z'; |
5826 | *(p++) = '0'; | |
5827 | *(p++) = ','; | |
5828 | ||
8181d85f DJ |
5829 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
5830 | p += hexnumstr (p, addr); | |
5831 | sprintf (p, ",%d", bp_tgt->placed_size); | |
802188a7 | 5832 | |
6d820c5c DJ |
5833 | putpkt (rs->buf); |
5834 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5835 | |
6d820c5c | 5836 | return (rs->buf[0] == 'E'); |
96baa820 JM |
5837 | } |
5838 | ||
8181d85f | 5839 | return memory_remove_breakpoint (bp_tgt); |
c906108c SS |
5840 | } |
5841 | ||
d471ea57 AC |
5842 | static int |
5843 | watchpoint_to_Z_packet (int type) | |
5844 | { | |
5845 | switch (type) | |
5846 | { | |
5847 | case hw_write: | |
bb858e6a | 5848 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
5849 | break; |
5850 | case hw_read: | |
bb858e6a | 5851 | return Z_PACKET_READ_WP; |
d471ea57 AC |
5852 | break; |
5853 | case hw_access: | |
bb858e6a | 5854 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
5855 | break; |
5856 | default: | |
8e65ff28 | 5857 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5858 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
5859 | } |
5860 | } | |
5861 | ||
3c3bea1c | 5862 | static int |
fba45db2 | 5863 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 5864 | { |
d01949b6 | 5865 | struct remote_state *rs = get_remote_state (); |
e514a9d6 | 5866 | char *p; |
d471ea57 | 5867 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 5868 | |
444abaca | 5869 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
5cffb350 | 5870 | return -1; |
802188a7 | 5871 | |
6d820c5c DJ |
5872 | sprintf (rs->buf, "Z%x,", packet); |
5873 | p = strchr (rs->buf, '\0'); | |
96baa820 JM |
5874 | addr = remote_address_masked (addr); |
5875 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 5876 | sprintf (p, ",%x", len); |
802188a7 | 5877 | |
6d820c5c DJ |
5878 | putpkt (rs->buf); |
5879 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5880 | |
6d820c5c | 5881 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
5882 | { |
5883 | case PACKET_ERROR: | |
5884 | case PACKET_UNKNOWN: | |
5885 | return -1; | |
5886 | case PACKET_OK: | |
5887 | return 0; | |
5888 | } | |
8e65ff28 | 5889 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5890 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
5891 | } |
5892 | ||
d471ea57 | 5893 | |
3c3bea1c | 5894 | static int |
fba45db2 | 5895 | remote_remove_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 5896 | { |
d01949b6 | 5897 | struct remote_state *rs = get_remote_state (); |
e514a9d6 | 5898 | char *p; |
d471ea57 AC |
5899 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
5900 | ||
444abaca | 5901 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
5cffb350 | 5902 | return -1; |
802188a7 | 5903 | |
6d820c5c DJ |
5904 | sprintf (rs->buf, "z%x,", packet); |
5905 | p = strchr (rs->buf, '\0'); | |
96baa820 JM |
5906 | addr = remote_address_masked (addr); |
5907 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 5908 | sprintf (p, ",%x", len); |
6d820c5c DJ |
5909 | putpkt (rs->buf); |
5910 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5911 | |
6d820c5c | 5912 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
5913 | { |
5914 | case PACKET_ERROR: | |
5915 | case PACKET_UNKNOWN: | |
5916 | return -1; | |
5917 | case PACKET_OK: | |
5918 | return 0; | |
5919 | } | |
8e65ff28 | 5920 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5921 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
5922 | } |
5923 | ||
3c3bea1c | 5924 | |
501eef12 AC |
5925 | int remote_hw_watchpoint_limit = -1; |
5926 | int remote_hw_breakpoint_limit = -1; | |
d471ea57 | 5927 | |
b9362cc7 | 5928 | static int |
3c3bea1c | 5929 | remote_check_watch_resources (int type, int cnt, int ot) |
96baa820 | 5930 | { |
3c3bea1c GS |
5931 | if (type == bp_hardware_breakpoint) |
5932 | { | |
5933 | if (remote_hw_breakpoint_limit == 0) | |
5934 | return 0; | |
501eef12 AC |
5935 | else if (remote_hw_breakpoint_limit < 0) |
5936 | return 1; | |
3c3bea1c GS |
5937 | else if (cnt <= remote_hw_breakpoint_limit) |
5938 | return 1; | |
5939 | } | |
5940 | else | |
5941 | { | |
5942 | if (remote_hw_watchpoint_limit == 0) | |
5943 | return 0; | |
501eef12 AC |
5944 | else if (remote_hw_watchpoint_limit < 0) |
5945 | return 1; | |
3c3bea1c GS |
5946 | else if (ot) |
5947 | return -1; | |
5948 | else if (cnt <= remote_hw_watchpoint_limit) | |
5949 | return 1; | |
5950 | } | |
5951 | return -1; | |
5952 | } | |
5953 | ||
b9362cc7 | 5954 | static int |
3c3bea1c GS |
5955 | remote_stopped_by_watchpoint (void) |
5956 | { | |
82f73884 | 5957 | return remote_stopped_by_watchpoint_p; |
3c3bea1c GS |
5958 | } |
5959 | ||
4aa7a7f5 JJ |
5960 | static int |
5961 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 5962 | { |
4aa7a7f5 | 5963 | int rc = 0; |
d983da9c | 5964 | if (remote_stopped_by_watchpoint ()) |
4aa7a7f5 JJ |
5965 | { |
5966 | *addr_p = remote_watch_data_address; | |
5967 | rc = 1; | |
5968 | } | |
5969 | ||
5970 | return rc; | |
3c3bea1c GS |
5971 | } |
5972 | ||
5973 | ||
5974 | static int | |
8181d85f | 5975 | remote_insert_hw_breakpoint (struct bp_target_info *bp_tgt) |
3c3bea1c | 5976 | { |
8181d85f | 5977 | CORE_ADDR addr; |
4fff2411 JZ |
5978 | struct remote_state *rs; |
5979 | char *p; | |
802188a7 | 5980 | |
c8189ed1 | 5981 | /* The length field should be set to the size of a breakpoint |
8181d85f | 5982 | instruction, even though we aren't inserting one ourselves. */ |
c8189ed1 | 5983 | |
3b3b875c | 5984 | gdbarch_breakpoint_from_pc |
1cf3db46 | 5985 | (target_gdbarch, &bp_tgt->placed_address, &bp_tgt->placed_size); |
3c3bea1c | 5986 | |
444abaca | 5987 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 5988 | return -1; |
2bc416ba | 5989 | |
4fff2411 JZ |
5990 | rs = get_remote_state (); |
5991 | p = rs->buf; | |
5992 | ||
96baa820 JM |
5993 | *(p++) = 'Z'; |
5994 | *(p++) = '1'; | |
5995 | *(p++) = ','; | |
802188a7 | 5996 | |
8181d85f | 5997 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 5998 | p += hexnumstr (p, (ULONGEST) addr); |
8181d85f | 5999 | sprintf (p, ",%x", bp_tgt->placed_size); |
96baa820 | 6000 | |
6d820c5c DJ |
6001 | putpkt (rs->buf); |
6002 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 6003 | |
6d820c5c | 6004 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
6005 | { |
6006 | case PACKET_ERROR: | |
6007 | case PACKET_UNKNOWN: | |
6008 | return -1; | |
6009 | case PACKET_OK: | |
6010 | return 0; | |
6011 | } | |
8e65ff28 | 6012 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 6013 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
6014 | } |
6015 | ||
d471ea57 | 6016 | |
802188a7 | 6017 | static int |
8181d85f | 6018 | remote_remove_hw_breakpoint (struct bp_target_info *bp_tgt) |
96baa820 | 6019 | { |
8181d85f | 6020 | CORE_ADDR addr; |
d01949b6 | 6021 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 6022 | char *p = rs->buf; |
c8189ed1 | 6023 | |
444abaca | 6024 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 6025 | return -1; |
802188a7 | 6026 | |
96baa820 JM |
6027 | *(p++) = 'z'; |
6028 | *(p++) = '1'; | |
6029 | *(p++) = ','; | |
802188a7 | 6030 | |
8181d85f | 6031 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 6032 | p += hexnumstr (p, (ULONGEST) addr); |
8181d85f | 6033 | sprintf (p, ",%x", bp_tgt->placed_size); |
96baa820 | 6034 | |
6d820c5c DJ |
6035 | putpkt (rs->buf); |
6036 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 6037 | |
6d820c5c | 6038 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
6039 | { |
6040 | case PACKET_ERROR: | |
6041 | case PACKET_UNKNOWN: | |
6042 | return -1; | |
6043 | case PACKET_OK: | |
6044 | return 0; | |
6045 | } | |
8e65ff28 | 6046 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 6047 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 6048 | } |
96baa820 | 6049 | |
23860348 | 6050 | /* Table used by the crc32 function to calcuate the checksum. */ |
c906108c | 6051 | |
c5aa993b JM |
6052 | static unsigned long crc32_table[256] = |
6053 | {0, 0}; | |
c906108c SS |
6054 | |
6055 | static unsigned long | |
fba45db2 | 6056 | crc32 (unsigned char *buf, int len, unsigned int crc) |
c906108c | 6057 | { |
c5aa993b | 6058 | if (!crc32_table[1]) |
c906108c | 6059 | { |
23860348 | 6060 | /* Initialize the CRC table and the decoding table. */ |
c906108c SS |
6061 | int i, j; |
6062 | unsigned int c; | |
6063 | ||
6064 | for (i = 0; i < 256; i++) | |
c5aa993b JM |
6065 | { |
6066 | for (c = i << 24, j = 8; j > 0; --j) | |
6067 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
6068 | crc32_table[i] = c; | |
6069 | } | |
c906108c SS |
6070 | } |
6071 | ||
6072 | while (len--) | |
6073 | { | |
6074 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |
6075 | buf++; | |
6076 | } | |
6077 | return crc; | |
6078 | } | |
6079 | ||
6080 | /* compare-sections command | |
6081 | ||
6082 | With no arguments, compares each loadable section in the exec bfd | |
6083 | with the same memory range on the target, and reports mismatches. | |
6084 | Useful for verifying the image on the target against the exec file. | |
6085 | Depends on the target understanding the new "qCRC:" request. */ | |
6086 | ||
e514a9d6 JM |
6087 | /* FIXME: cagney/1999-10-26: This command should be broken down into a |
6088 | target method (target verify memory) and generic version of the | |
6089 | actual command. This will allow other high-level code (especially | |
23860348 | 6090 | generic_load()) to make use of this target functionality. */ |
e514a9d6 | 6091 | |
c906108c | 6092 | static void |
fba45db2 | 6093 | compare_sections_command (char *args, int from_tty) |
c906108c | 6094 | { |
d01949b6 | 6095 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
6096 | asection *s; |
6097 | unsigned long host_crc, target_crc; | |
6098 | extern bfd *exec_bfd; | |
6099 | struct cleanup *old_chain; | |
085dd6e6 JM |
6100 | char *tmp; |
6101 | char *sectdata; | |
ce359b09 | 6102 | const char *sectname; |
c906108c SS |
6103 | bfd_size_type size; |
6104 | bfd_vma lma; | |
6105 | int matched = 0; | |
6106 | int mismatched = 0; | |
6107 | ||
6108 | if (!exec_bfd) | |
8a3fe4f8 | 6109 | error (_("command cannot be used without an exec file")); |
c906108c SS |
6110 | if (!current_target.to_shortname || |
6111 | strcmp (current_target.to_shortname, "remote") != 0) | |
8a3fe4f8 | 6112 | error (_("command can only be used with remote target")); |
c906108c | 6113 | |
c5aa993b | 6114 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
6115 | { |
6116 | if (!(s->flags & SEC_LOAD)) | |
c5aa993b | 6117 | continue; /* skip non-loadable section */ |
c906108c | 6118 | |
2c500098 | 6119 | size = bfd_get_section_size (s); |
c906108c | 6120 | if (size == 0) |
c5aa993b | 6121 | continue; /* skip zero-length section */ |
c906108c | 6122 | |
ce359b09 | 6123 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 6124 | if (args && strcmp (args, sectname) != 0) |
c5aa993b | 6125 | continue; /* not the section selected by user */ |
c906108c | 6126 | |
c5aa993b | 6127 | matched = 1; /* do this section */ |
c906108c | 6128 | lma = s->lma; |
23860348 | 6129 | /* FIXME: assumes lma can fit into long. */ |
ea9c271d | 6130 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", |
ecbc58df | 6131 | (long) lma, (long) size); |
6d820c5c | 6132 | putpkt (rs->buf); |
c906108c | 6133 | |
23860348 MS |
6134 | /* Be clever; compute the host_crc before waiting for target |
6135 | reply. */ | |
c906108c | 6136 | sectdata = xmalloc (size); |
b8c9b27d | 6137 | old_chain = make_cleanup (xfree, sectdata); |
c906108c SS |
6138 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
6139 | host_crc = crc32 ((unsigned char *) sectdata, size, 0xffffffff); | |
6140 | ||
6d820c5c DJ |
6141 | getpkt (&rs->buf, &rs->buf_size, 0); |
6142 | if (rs->buf[0] == 'E') | |
8a3fe4f8 | 6143 | error (_("target memory fault, section %s, range 0x%s -- 0x%s"), |
823ca731 | 6144 | sectname, paddr (lma), paddr (lma + size)); |
6d820c5c | 6145 | if (rs->buf[0] != 'C') |
8a3fe4f8 | 6146 | error (_("remote target does not support this operation")); |
c906108c | 6147 | |
6d820c5c | 6148 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) |
c906108c SS |
6149 | target_crc = target_crc * 16 + fromhex (*tmp); |
6150 | ||
d4f3574e SS |
6151 | printf_filtered ("Section %s, range 0x%s -- 0x%s: ", |
6152 | sectname, paddr (lma), paddr (lma + size)); | |
c906108c SS |
6153 | if (host_crc == target_crc) |
6154 | printf_filtered ("matched.\n"); | |
6155 | else | |
c5aa993b JM |
6156 | { |
6157 | printf_filtered ("MIS-MATCHED!\n"); | |
6158 | mismatched++; | |
6159 | } | |
c906108c SS |
6160 | |
6161 | do_cleanups (old_chain); | |
6162 | } | |
6163 | if (mismatched > 0) | |
8a3fe4f8 AC |
6164 | warning (_("One or more sections of the remote executable does not match\n\ |
6165 | the loaded file\n")); | |
c906108c | 6166 | if (args && !matched) |
a3f17187 | 6167 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
6168 | } |
6169 | ||
0e7f50da UW |
6170 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
6171 | into remote target. The number of bytes written to the remote | |
6172 | target is returned, or -1 for error. */ | |
6173 | ||
6174 | static LONGEST | |
6175 | remote_write_qxfer (struct target_ops *ops, const char *object_name, | |
6176 | const char *annex, const gdb_byte *writebuf, | |
6177 | ULONGEST offset, LONGEST len, | |
6178 | struct packet_config *packet) | |
6179 | { | |
6180 | int i, buf_len; | |
6181 | ULONGEST n; | |
6182 | gdb_byte *wbuf; | |
6183 | struct remote_state *rs = get_remote_state (); | |
6184 | int max_size = get_memory_write_packet_size (); | |
6185 | ||
6186 | if (packet->support == PACKET_DISABLE) | |
6187 | return -1; | |
6188 | ||
6189 | /* Insert header. */ | |
6190 | i = snprintf (rs->buf, max_size, | |
6191 | "qXfer:%s:write:%s:%s:", | |
6192 | object_name, annex ? annex : "", | |
6193 | phex_nz (offset, sizeof offset)); | |
6194 | max_size -= (i + 1); | |
6195 | ||
6196 | /* Escape as much data as fits into rs->buf. */ | |
6197 | buf_len = remote_escape_output | |
6198 | (writebuf, len, (rs->buf + i), &max_size, max_size); | |
6199 | ||
6200 | if (putpkt_binary (rs->buf, i + buf_len) < 0 | |
6201 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
6202 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
6203 | return -1; | |
6204 | ||
6205 | unpack_varlen_hex (rs->buf, &n); | |
6206 | return n; | |
6207 | } | |
6208 | ||
0876f84a DJ |
6209 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
6210 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
6211 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
6212 | The number of bytes read may be less than LEN without indicating an | |
6213 | EOF. PACKET is checked and updated to indicate whether the remote | |
6214 | target supports this object. */ | |
6215 | ||
6216 | static LONGEST | |
6217 | remote_read_qxfer (struct target_ops *ops, const char *object_name, | |
6218 | const char *annex, | |
6219 | gdb_byte *readbuf, ULONGEST offset, LONGEST len, | |
6220 | struct packet_config *packet) | |
6221 | { | |
6222 | static char *finished_object; | |
6223 | static char *finished_annex; | |
6224 | static ULONGEST finished_offset; | |
6225 | ||
6226 | struct remote_state *rs = get_remote_state (); | |
6227 | unsigned int total = 0; | |
6228 | LONGEST i, n, packet_len; | |
6229 | ||
6230 | if (packet->support == PACKET_DISABLE) | |
6231 | return -1; | |
6232 | ||
6233 | /* Check whether we've cached an end-of-object packet that matches | |
6234 | this request. */ | |
6235 | if (finished_object) | |
6236 | { | |
6237 | if (strcmp (object_name, finished_object) == 0 | |
6238 | && strcmp (annex ? annex : "", finished_annex) == 0 | |
6239 | && offset == finished_offset) | |
6240 | return 0; | |
6241 | ||
6242 | /* Otherwise, we're now reading something different. Discard | |
6243 | the cache. */ | |
6244 | xfree (finished_object); | |
6245 | xfree (finished_annex); | |
6246 | finished_object = NULL; | |
6247 | finished_annex = NULL; | |
6248 | } | |
6249 | ||
6250 | /* Request only enough to fit in a single packet. The actual data | |
6251 | may not, since we don't know how much of it will need to be escaped; | |
6252 | the target is free to respond with slightly less data. We subtract | |
6253 | five to account for the response type and the protocol frame. */ | |
6254 | n = min (get_remote_packet_size () - 5, len); | |
6255 | snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s", | |
6256 | object_name, annex ? annex : "", | |
6257 | phex_nz (offset, sizeof offset), | |
6258 | phex_nz (n, sizeof n)); | |
6259 | i = putpkt (rs->buf); | |
6260 | if (i < 0) | |
6261 | return -1; | |
6262 | ||
6263 | rs->buf[0] = '\0'; | |
6264 | packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
6265 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) | |
6266 | return -1; | |
6267 | ||
6268 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
6269 | error (_("Unknown remote qXfer reply: %s"), rs->buf); | |
6270 | ||
6271 | /* 'm' means there is (or at least might be) more data after this | |
6272 | batch. That does not make sense unless there's at least one byte | |
6273 | of data in this reply. */ | |
6274 | if (rs->buf[0] == 'm' && packet_len == 1) | |
6275 | error (_("Remote qXfer reply contained no data.")); | |
6276 | ||
6277 | /* Got some data. */ | |
6278 | i = remote_unescape_input (rs->buf + 1, packet_len - 1, readbuf, n); | |
6279 | ||
6280 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
6281 | or possibly empty. If we have the final block of a non-empty |
6282 | object, record this fact to bypass a subsequent partial read. */ | |
6283 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a DJ |
6284 | { |
6285 | finished_object = xstrdup (object_name); | |
6286 | finished_annex = xstrdup (annex ? annex : ""); | |
6287 | finished_offset = offset + i; | |
6288 | } | |
6289 | ||
6290 | return i; | |
6291 | } | |
6292 | ||
1e3ff5ad | 6293 | static LONGEST |
4b8a223f | 6294 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
961cb7b5 MK |
6295 | const char *annex, gdb_byte *readbuf, |
6296 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
c906108c | 6297 | { |
82f73884 | 6298 | struct remote_state *rs; |
c906108c | 6299 | int i; |
6d820c5c | 6300 | char *p2; |
1e3ff5ad | 6301 | char query_type; |
c906108c | 6302 | |
82f73884 PA |
6303 | set_general_thread (inferior_ptid); |
6304 | ||
6305 | rs = get_remote_state (); | |
6306 | ||
b2182ed2 | 6307 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
6308 | if (object == TARGET_OBJECT_MEMORY) |
6309 | { | |
6310 | int xfered; | |
6311 | errno = 0; | |
6312 | ||
2d717e4f DJ |
6313 | /* If the remote target is connected but not running, we should |
6314 | pass this request down to a lower stratum (e.g. the executable | |
6315 | file). */ | |
6316 | if (!target_has_execution) | |
6317 | return 0; | |
6318 | ||
21e3b9b9 | 6319 | if (writebuf != NULL) |
b2182ed2 | 6320 | xfered = remote_write_bytes (offset, writebuf, len); |
21e3b9b9 | 6321 | else |
b2182ed2 | 6322 | xfered = remote_read_bytes (offset, readbuf, len); |
21e3b9b9 DJ |
6323 | |
6324 | if (xfered > 0) | |
6325 | return xfered; | |
6326 | else if (xfered == 0 && errno == 0) | |
6327 | return 0; | |
6328 | else | |
6329 | return -1; | |
6330 | } | |
6331 | ||
0e7f50da UW |
6332 | /* Handle SPU memory using qxfer packets. */ |
6333 | if (object == TARGET_OBJECT_SPU) | |
6334 | { | |
6335 | if (readbuf) | |
6336 | return remote_read_qxfer (ops, "spu", annex, readbuf, offset, len, | |
6337 | &remote_protocol_packets | |
6338 | [PACKET_qXfer_spu_read]); | |
6339 | else | |
6340 | return remote_write_qxfer (ops, "spu", annex, writebuf, offset, len, | |
6341 | &remote_protocol_packets | |
6342 | [PACKET_qXfer_spu_write]); | |
6343 | } | |
6344 | ||
a76d924d DJ |
6345 | /* Only handle flash writes. */ |
6346 | if (writebuf != NULL) | |
6347 | { | |
6348 | LONGEST xfered; | |
6349 | ||
6350 | switch (object) | |
6351 | { | |
6352 | case TARGET_OBJECT_FLASH: | |
6353 | xfered = remote_flash_write (ops, offset, len, writebuf); | |
6354 | ||
6355 | if (xfered > 0) | |
6356 | return xfered; | |
6357 | else if (xfered == 0 && errno == 0) | |
6358 | return 0; | |
6359 | else | |
6360 | return -1; | |
6361 | ||
6362 | default: | |
6363 | return -1; | |
6364 | } | |
6365 | } | |
4b8a223f | 6366 | |
1e3ff5ad AC |
6367 | /* Map pre-existing objects onto letters. DO NOT do this for new |
6368 | objects!!! Instead specify new query packets. */ | |
6369 | switch (object) | |
c906108c | 6370 | { |
1e3ff5ad AC |
6371 | case TARGET_OBJECT_AVR: |
6372 | query_type = 'R'; | |
6373 | break; | |
802188a7 RM |
6374 | |
6375 | case TARGET_OBJECT_AUXV: | |
0876f84a DJ |
6376 | gdb_assert (annex == NULL); |
6377 | return remote_read_qxfer (ops, "auxv", annex, readbuf, offset, len, | |
6378 | &remote_protocol_packets[PACKET_qXfer_auxv]); | |
802188a7 | 6379 | |
23181151 DJ |
6380 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
6381 | return remote_read_qxfer | |
6382 | (ops, "features", annex, readbuf, offset, len, | |
6383 | &remote_protocol_packets[PACKET_qXfer_features]); | |
6384 | ||
cfa9d6d9 DJ |
6385 | case TARGET_OBJECT_LIBRARIES: |
6386 | return remote_read_qxfer | |
6387 | (ops, "libraries", annex, readbuf, offset, len, | |
6388 | &remote_protocol_packets[PACKET_qXfer_libraries]); | |
6389 | ||
fd79ecee DJ |
6390 | case TARGET_OBJECT_MEMORY_MAP: |
6391 | gdb_assert (annex == NULL); | |
6392 | return remote_read_qxfer (ops, "memory-map", annex, readbuf, offset, len, | |
6393 | &remote_protocol_packets[PACKET_qXfer_memory_map]); | |
6394 | ||
1e3ff5ad | 6395 | default: |
c906108c SS |
6396 | return -1; |
6397 | } | |
6398 | ||
4b8a223f | 6399 | /* Note: a zero OFFSET and LEN can be used to query the minimum |
1e3ff5ad | 6400 | buffer size. */ |
4b8a223f | 6401 | if (offset == 0 && len == 0) |
ea9c271d DJ |
6402 | return (get_remote_packet_size ()); |
6403 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not | |
24b06219 | 6404 | large enough let the caller deal with it. */ |
ea9c271d | 6405 | if (len < get_remote_packet_size ()) |
1e3ff5ad | 6406 | return -1; |
ea9c271d | 6407 | len = get_remote_packet_size (); |
1e3ff5ad | 6408 | |
23860348 | 6409 | /* Except for querying the minimum buffer size, target must be open. */ |
c5aa993b | 6410 | if (!remote_desc) |
8a3fe4f8 | 6411 | error (_("remote query is only available after target open")); |
c906108c | 6412 | |
1e3ff5ad | 6413 | gdb_assert (annex != NULL); |
4b8a223f | 6414 | gdb_assert (readbuf != NULL); |
c906108c | 6415 | |
6d820c5c | 6416 | p2 = rs->buf; |
c906108c SS |
6417 | *p2++ = 'q'; |
6418 | *p2++ = query_type; | |
6419 | ||
23860348 MS |
6420 | /* We used one buffer char for the remote protocol q command and |
6421 | another for the query type. As the remote protocol encapsulation | |
6422 | uses 4 chars plus one extra in case we are debugging | |
6423 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
6424 | string. */ | |
c906108c | 6425 | i = 0; |
ea9c271d | 6426 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 6427 | { |
1e3ff5ad AC |
6428 | /* Bad caller may have sent forbidden characters. */ |
6429 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
6430 | *p2++ = annex[i]; | |
c906108c SS |
6431 | i++; |
6432 | } | |
1e3ff5ad AC |
6433 | *p2 = '\0'; |
6434 | gdb_assert (annex[i] == '\0'); | |
c906108c | 6435 | |
6d820c5c | 6436 | i = putpkt (rs->buf); |
c5aa993b JM |
6437 | if (i < 0) |
6438 | return i; | |
c906108c | 6439 | |
6d820c5c DJ |
6440 | getpkt (&rs->buf, &rs->buf_size, 0); |
6441 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 6442 | |
cfd77fa1 | 6443 | return strlen ((char *) readbuf); |
c906108c SS |
6444 | } |
6445 | ||
08388c79 DE |
6446 | static int |
6447 | remote_search_memory (struct target_ops* ops, | |
6448 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
6449 | const gdb_byte *pattern, ULONGEST pattern_len, | |
6450 | CORE_ADDR *found_addrp) | |
6451 | { | |
6452 | struct remote_state *rs = get_remote_state (); | |
6453 | int max_size = get_memory_write_packet_size (); | |
6454 | struct packet_config *packet = | |
6455 | &remote_protocol_packets[PACKET_qSearch_memory]; | |
6456 | /* number of packet bytes used to encode the pattern, | |
6457 | this could be more than PATTERN_LEN due to escape characters */ | |
6458 | int escaped_pattern_len; | |
6459 | /* amount of pattern that was encodable in the packet */ | |
6460 | int used_pattern_len; | |
6461 | int i; | |
6462 | int found; | |
6463 | ULONGEST found_addr; | |
6464 | ||
6465 | /* Don't go to the target if we don't have to. | |
6466 | This is done before checking packet->support to avoid the possibility that | |
6467 | a success for this edge case means the facility works in general. */ | |
6468 | if (pattern_len > search_space_len) | |
6469 | return 0; | |
6470 | if (pattern_len == 0) | |
6471 | { | |
6472 | *found_addrp = start_addr; | |
6473 | return 1; | |
6474 | } | |
6475 | ||
6476 | /* If we already know the packet isn't supported, fall back to the simple | |
6477 | way of searching memory. */ | |
6478 | ||
6479 | if (packet->support == PACKET_DISABLE) | |
6480 | { | |
6481 | /* Target doesn't provided special support, fall back and use the | |
6482 | standard support (copy memory and do the search here). */ | |
6483 | return simple_search_memory (ops, start_addr, search_space_len, | |
6484 | pattern, pattern_len, found_addrp); | |
6485 | } | |
6486 | ||
6487 | /* Insert header. */ | |
6488 | i = snprintf (rs->buf, max_size, | |
6489 | "qSearch:memory:%s;%s;", | |
6490 | paddr_nz (start_addr), | |
6491 | phex_nz (search_space_len, sizeof (search_space_len))); | |
6492 | max_size -= (i + 1); | |
6493 | ||
6494 | /* Escape as much data as fits into rs->buf. */ | |
6495 | escaped_pattern_len = | |
6496 | remote_escape_output (pattern, pattern_len, (rs->buf + i), | |
6497 | &used_pattern_len, max_size); | |
6498 | ||
6499 | /* Bail if the pattern is too large. */ | |
6500 | if (used_pattern_len != pattern_len) | |
10e0fa18 | 6501 | error ("Pattern is too large to transmit to remote target."); |
08388c79 DE |
6502 | |
6503 | if (putpkt_binary (rs->buf, i + escaped_pattern_len) < 0 | |
6504 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
6505 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
6506 | { | |
6507 | /* The request may not have worked because the command is not | |
6508 | supported. If so, fall back to the simple way. */ | |
6509 | if (packet->support == PACKET_DISABLE) | |
6510 | { | |
6511 | return simple_search_memory (ops, start_addr, search_space_len, | |
6512 | pattern, pattern_len, found_addrp); | |
6513 | } | |
6514 | return -1; | |
6515 | } | |
6516 | ||
6517 | if (rs->buf[0] == '0') | |
6518 | found = 0; | |
6519 | else if (rs->buf[0] == '1') | |
6520 | { | |
6521 | found = 1; | |
6522 | if (rs->buf[1] != ',') | |
10e0fa18 | 6523 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
6524 | unpack_varlen_hex (rs->buf + 2, &found_addr); |
6525 | *found_addrp = found_addr; | |
6526 | } | |
6527 | else | |
10e0fa18 | 6528 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
6529 | |
6530 | return found; | |
6531 | } | |
6532 | ||
96baa820 JM |
6533 | static void |
6534 | remote_rcmd (char *command, | |
d9fcf2fb | 6535 | struct ui_file *outbuf) |
96baa820 | 6536 | { |
d01949b6 | 6537 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 6538 | char *p = rs->buf; |
96baa820 JM |
6539 | |
6540 | if (!remote_desc) | |
8a3fe4f8 | 6541 | error (_("remote rcmd is only available after target open")); |
96baa820 | 6542 | |
23860348 | 6543 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
6544 | if (command == NULL) |
6545 | command = ""; | |
6546 | ||
23860348 | 6547 | /* The query prefix. */ |
2e9f7625 DJ |
6548 | strcpy (rs->buf, "qRcmd,"); |
6549 | p = strchr (rs->buf, '\0'); | |
96baa820 | 6550 | |
2e9f7625 | 6551 | if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/) > get_remote_packet_size ()) |
8a3fe4f8 | 6552 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 6553 | |
23860348 | 6554 | /* Encode the actual command. */ |
cfd77fa1 | 6555 | bin2hex ((gdb_byte *) command, p, 0); |
96baa820 | 6556 | |
6d820c5c | 6557 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 6558 | error (_("Communication problem with target.")); |
96baa820 JM |
6559 | |
6560 | /* get/display the response */ | |
6561 | while (1) | |
6562 | { | |
2e9f7625 DJ |
6563 | char *buf; |
6564 | ||
23860348 | 6565 | /* XXX - see also tracepoint.c:remote_get_noisy_reply(). */ |
2e9f7625 | 6566 | rs->buf[0] = '\0'; |
6d820c5c | 6567 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 6568 | buf = rs->buf; |
96baa820 | 6569 | if (buf[0] == '\0') |
8a3fe4f8 | 6570 | error (_("Target does not support this command.")); |
96baa820 JM |
6571 | if (buf[0] == 'O' && buf[1] != 'K') |
6572 | { | |
23860348 | 6573 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
6574 | continue; |
6575 | } | |
6576 | if (strcmp (buf, "OK") == 0) | |
6577 | break; | |
7be570e7 JM |
6578 | if (strlen (buf) == 3 && buf[0] == 'E' |
6579 | && isdigit (buf[1]) && isdigit (buf[2])) | |
6580 | { | |
8a3fe4f8 | 6581 | error (_("Protocol error with Rcmd")); |
7be570e7 | 6582 | } |
96baa820 JM |
6583 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
6584 | { | |
6585 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
6586 | fputc_unfiltered (c, outbuf); | |
6587 | } | |
6588 | break; | |
6589 | } | |
6590 | } | |
6591 | ||
fd79ecee DJ |
6592 | static VEC(mem_region_s) * |
6593 | remote_memory_map (struct target_ops *ops) | |
6594 | { | |
6595 | VEC(mem_region_s) *result = NULL; | |
6596 | char *text = target_read_stralloc (¤t_target, | |
6597 | TARGET_OBJECT_MEMORY_MAP, NULL); | |
6598 | ||
6599 | if (text) | |
6600 | { | |
6601 | struct cleanup *back_to = make_cleanup (xfree, text); | |
6602 | result = parse_memory_map (text); | |
6603 | do_cleanups (back_to); | |
6604 | } | |
6605 | ||
6606 | return result; | |
6607 | } | |
6608 | ||
c906108c | 6609 | static void |
fba45db2 | 6610 | packet_command (char *args, int from_tty) |
c906108c | 6611 | { |
d01949b6 | 6612 | struct remote_state *rs = get_remote_state (); |
c906108c | 6613 | |
c5aa993b | 6614 | if (!remote_desc) |
8a3fe4f8 | 6615 | error (_("command can only be used with remote target")); |
c906108c | 6616 | |
c5aa993b | 6617 | if (!args) |
8a3fe4f8 | 6618 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
6619 | |
6620 | puts_filtered ("sending: "); | |
6621 | print_packet (args); | |
6622 | puts_filtered ("\n"); | |
6623 | putpkt (args); | |
6624 | ||
6d820c5c | 6625 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 6626 | puts_filtered ("received: "); |
6d820c5c | 6627 | print_packet (rs->buf); |
c906108c SS |
6628 | puts_filtered ("\n"); |
6629 | } | |
6630 | ||
6631 | #if 0 | |
23860348 | 6632 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 6633 | |
a14ed312 | 6634 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 6635 | |
a14ed312 | 6636 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 6637 | |
a14ed312 | 6638 | static void threadalive_test (char *cmd, int tty); |
c906108c | 6639 | |
a14ed312 | 6640 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 6641 | |
23860348 | 6642 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 6643 | |
a14ed312 | 6644 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 6645 | |
23860348 | 6646 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 6647 | |
a14ed312 | 6648 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 6649 | |
a14ed312 | 6650 | static void init_remote_threadtests (void); |
c906108c | 6651 | |
23860348 | 6652 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
6653 | |
6654 | static void | |
fba45db2 | 6655 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
6656 | { |
6657 | int sample_thread = SAMPLE_THREAD; | |
6658 | ||
a3f17187 | 6659 | printf_filtered (_("Remote threadset test\n")); |
79d7f229 | 6660 | set_general_thread (sample_thread); |
c906108c SS |
6661 | } |
6662 | ||
6663 | ||
6664 | static void | |
fba45db2 | 6665 | threadalive_test (char *cmd, int tty) |
c906108c SS |
6666 | { |
6667 | int sample_thread = SAMPLE_THREAD; | |
79d7f229 PA |
6668 | int pid = ptid_get_pid (inferior_ptid); |
6669 | ptid_t ptid = ptid_build (pid, 0, sample_thread); | |
c906108c | 6670 | |
79d7f229 | 6671 | if (remote_thread_alive (ptid)) |
c906108c SS |
6672 | printf_filtered ("PASS: Thread alive test\n"); |
6673 | else | |
6674 | printf_filtered ("FAIL: Thread alive test\n"); | |
6675 | } | |
6676 | ||
23860348 | 6677 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
6678 | |
6679 | void | |
fba45db2 | 6680 | output_threadid (char *title, threadref *ref) |
c906108c SS |
6681 | { |
6682 | char hexid[20]; | |
6683 | ||
23860348 | 6684 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
6685 | hexid[16] = 0; |
6686 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
6687 | } | |
6688 | ||
6689 | static void | |
fba45db2 | 6690 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
6691 | { |
6692 | int startflag = 1; | |
6693 | threadref nextthread; | |
6694 | int done, result_count; | |
6695 | threadref threadlist[3]; | |
6696 | ||
6697 | printf_filtered ("Remote Threadlist test\n"); | |
6698 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
6699 | &result_count, &threadlist[0])) | |
6700 | printf_filtered ("FAIL: threadlist test\n"); | |
6701 | else | |
6702 | { | |
6703 | threadref *scan = threadlist; | |
6704 | threadref *limit = scan + result_count; | |
6705 | ||
6706 | while (scan < limit) | |
6707 | output_threadid (" thread ", scan++); | |
6708 | } | |
6709 | } | |
6710 | ||
6711 | void | |
fba45db2 | 6712 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
6713 | { |
6714 | output_threadid ("Threadid: ", &info->threadid); | |
6715 | printf_filtered ("Name: %s\n ", info->shortname); | |
6716 | printf_filtered ("State: %s\n", info->display); | |
6717 | printf_filtered ("other: %s\n\n", info->more_display); | |
6718 | } | |
6719 | ||
6720 | int | |
fba45db2 | 6721 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
6722 | { |
6723 | int result; | |
6724 | int set; | |
6725 | struct gdb_ext_thread_info threadinfo; | |
6726 | ||
6727 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
6728 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
6729 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
6730 | display_thread_info (&threadinfo); | |
6731 | return result; | |
6732 | } | |
6733 | ||
6734 | static void | |
fba45db2 | 6735 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
6736 | { |
6737 | int athread = SAMPLE_THREAD; | |
6738 | threadref thread; | |
6739 | int set; | |
6740 | ||
6741 | int_to_threadref (&thread, athread); | |
6742 | printf_filtered ("Remote Threadinfo test\n"); | |
6743 | if (!get_and_display_threadinfo (&thread)) | |
6744 | printf_filtered ("FAIL cannot get thread info\n"); | |
6745 | } | |
6746 | ||
6747 | static int | |
fba45db2 | 6748 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
6749 | { |
6750 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
6751 | return get_and_display_threadinfo (ref); | |
6752 | } | |
6753 | ||
6754 | static void | |
fba45db2 | 6755 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
6756 | { |
6757 | printf_filtered ("Remote Threadlist update test\n"); | |
6758 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
6759 | } | |
6760 | ||
6761 | static void | |
6762 | init_remote_threadtests (void) | |
6763 | { | |
1bedd215 AC |
6764 | add_com ("tlist", class_obscure, threadlist_test_cmd, _("\ |
6765 | Fetch and print the remote list of thread identifiers, one pkt only")); | |
c906108c | 6766 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 6767 | _("Fetch and display info about one thread")); |
c906108c | 6768 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 6769 | _("Test setting to a different thread")); |
c906108c | 6770 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 6771 | _("Iterate through updating all remote thread info")); |
c906108c | 6772 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 6773 | _(" Remote thread alive test ")); |
c906108c SS |
6774 | } |
6775 | ||
6776 | #endif /* 0 */ | |
6777 | ||
f3fb8c85 MS |
6778 | /* Convert a thread ID to a string. Returns the string in a static |
6779 | buffer. */ | |
6780 | ||
6781 | static char * | |
39f77062 | 6782 | remote_pid_to_str (ptid_t ptid) |
f3fb8c85 | 6783 | { |
79d7f229 | 6784 | static char buf[64]; |
82f73884 | 6785 | struct remote_state *rs = get_remote_state (); |
f3fb8c85 | 6786 | |
79d7f229 PA |
6787 | if (ptid_equal (magic_null_ptid, ptid)) |
6788 | { | |
6789 | xsnprintf (buf, sizeof buf, "Thread <main>"); | |
6790 | return buf; | |
6791 | } | |
82f73884 PA |
6792 | else if (remote_multi_process_p (rs) |
6793 | && ptid_get_tid (ptid) != 0 && ptid_get_pid (ptid) != 0) | |
6794 | { | |
6795 | xsnprintf (buf, sizeof buf, "Thread %d.%ld", | |
6796 | ptid_get_pid (ptid), ptid_get_tid (ptid)); | |
6797 | return buf; | |
6798 | } | |
79d7f229 PA |
6799 | else if (ptid_get_tid (ptid) != 0) |
6800 | { | |
6801 | xsnprintf (buf, sizeof buf, "Thread %ld", | |
6802 | ptid_get_tid (ptid)); | |
6803 | return buf; | |
6804 | } | |
6805 | ||
6806 | return normal_pid_to_str (ptid); | |
f3fb8c85 MS |
6807 | } |
6808 | ||
38691318 KB |
6809 | /* Get the address of the thread local variable in OBJFILE which is |
6810 | stored at OFFSET within the thread local storage for thread PTID. */ | |
6811 | ||
6812 | static CORE_ADDR | |
6813 | remote_get_thread_local_address (ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
6814 | { | |
444abaca | 6815 | if (remote_protocol_packets[PACKET_qGetTLSAddr].support != PACKET_DISABLE) |
38691318 KB |
6816 | { |
6817 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 6818 | char *p = rs->buf; |
82f73884 | 6819 | char *endp = rs->buf + get_remote_packet_size (); |
571dd617 | 6820 | enum packet_result result; |
38691318 KB |
6821 | |
6822 | strcpy (p, "qGetTLSAddr:"); | |
6823 | p += strlen (p); | |
82f73884 | 6824 | p = write_ptid (p, endp, ptid); |
38691318 KB |
6825 | *p++ = ','; |
6826 | p += hexnumstr (p, offset); | |
6827 | *p++ = ','; | |
6828 | p += hexnumstr (p, lm); | |
6829 | *p++ = '\0'; | |
6830 | ||
6d820c5c DJ |
6831 | putpkt (rs->buf); |
6832 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6833 | result = packet_ok (rs->buf, &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 6834 | if (result == PACKET_OK) |
38691318 KB |
6835 | { |
6836 | ULONGEST result; | |
6837 | ||
6d820c5c | 6838 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
6839 | return result; |
6840 | } | |
571dd617 | 6841 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
6842 | throw_error (TLS_GENERIC_ERROR, |
6843 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 6844 | else |
109c3e39 AC |
6845 | throw_error (TLS_GENERIC_ERROR, |
6846 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
6847 | } |
6848 | else | |
109c3e39 AC |
6849 | throw_error (TLS_GENERIC_ERROR, |
6850 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
6851 | /* Not reached. */ |
6852 | return 0; | |
6853 | } | |
6854 | ||
29709017 DJ |
6855 | /* Support for inferring a target description based on the current |
6856 | architecture and the size of a 'g' packet. While the 'g' packet | |
6857 | can have any size (since optional registers can be left off the | |
6858 | end), some sizes are easily recognizable given knowledge of the | |
6859 | approximate architecture. */ | |
6860 | ||
6861 | struct remote_g_packet_guess | |
6862 | { | |
6863 | int bytes; | |
6864 | const struct target_desc *tdesc; | |
6865 | }; | |
6866 | typedef struct remote_g_packet_guess remote_g_packet_guess_s; | |
6867 | DEF_VEC_O(remote_g_packet_guess_s); | |
6868 | ||
6869 | struct remote_g_packet_data | |
6870 | { | |
6871 | VEC(remote_g_packet_guess_s) *guesses; | |
6872 | }; | |
6873 | ||
6874 | static struct gdbarch_data *remote_g_packet_data_handle; | |
6875 | ||
6876 | static void * | |
6877 | remote_g_packet_data_init (struct obstack *obstack) | |
6878 | { | |
6879 | return OBSTACK_ZALLOC (obstack, struct remote_g_packet_data); | |
6880 | } | |
6881 | ||
6882 | void | |
6883 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
6884 | const struct target_desc *tdesc) | |
6885 | { | |
6886 | struct remote_g_packet_data *data | |
6887 | = gdbarch_data (gdbarch, remote_g_packet_data_handle); | |
6888 | struct remote_g_packet_guess new_guess, *guess; | |
6889 | int ix; | |
6890 | ||
6891 | gdb_assert (tdesc != NULL); | |
6892 | ||
6893 | for (ix = 0; | |
6894 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
6895 | ix++) | |
6896 | if (guess->bytes == bytes) | |
6897 | internal_error (__FILE__, __LINE__, | |
6898 | "Duplicate g packet description added for size %d", | |
6899 | bytes); | |
6900 | ||
6901 | new_guess.bytes = bytes; | |
6902 | new_guess.tdesc = tdesc; | |
6903 | VEC_safe_push (remote_g_packet_guess_s, data->guesses, &new_guess); | |
6904 | } | |
6905 | ||
6906 | static const struct target_desc * | |
6907 | remote_read_description (struct target_ops *target) | |
6908 | { | |
6909 | struct remote_g_packet_data *data | |
1cf3db46 | 6910 | = gdbarch_data (target_gdbarch, remote_g_packet_data_handle); |
29709017 DJ |
6911 | |
6912 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) | |
6913 | { | |
6914 | struct remote_g_packet_guess *guess; | |
6915 | int ix; | |
6916 | int bytes = send_g_packet (); | |
6917 | ||
6918 | for (ix = 0; | |
6919 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
6920 | ix++) | |
6921 | if (guess->bytes == bytes) | |
6922 | return guess->tdesc; | |
6923 | ||
6924 | /* We discard the g packet. A minor optimization would be to | |
6925 | hold on to it, and fill the register cache once we have selected | |
6926 | an architecture, but it's too tricky to do safely. */ | |
6927 | } | |
6928 | ||
6929 | return NULL; | |
6930 | } | |
6931 | ||
a6b151f1 DJ |
6932 | /* Remote file transfer support. This is host-initiated I/O, not |
6933 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
6934 | ||
6935 | /* If *LEFT is at least the length of STRING, copy STRING to | |
6936 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
6937 | decrease *LEFT. Otherwise raise an error. */ | |
6938 | ||
6939 | static void | |
6940 | remote_buffer_add_string (char **buffer, int *left, char *string) | |
6941 | { | |
6942 | int len = strlen (string); | |
6943 | ||
6944 | if (len > *left) | |
6945 | error (_("Packet too long for target.")); | |
6946 | ||
6947 | memcpy (*buffer, string, len); | |
6948 | *buffer += len; | |
6949 | *left -= len; | |
6950 | ||
6951 | /* NUL-terminate the buffer as a convenience, if there is | |
6952 | room. */ | |
6953 | if (*left) | |
6954 | **buffer = '\0'; | |
6955 | } | |
6956 | ||
6957 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
6958 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
6959 | decrease *LEFT. Otherwise raise an error. */ | |
6960 | ||
6961 | static void | |
6962 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
6963 | int len) | |
6964 | { | |
6965 | if (2 * len > *left) | |
6966 | error (_("Packet too long for target.")); | |
6967 | ||
6968 | bin2hex (bytes, *buffer, len); | |
6969 | *buffer += 2 * len; | |
6970 | *left -= 2 * len; | |
6971 | ||
6972 | /* NUL-terminate the buffer as a convenience, if there is | |
6973 | room. */ | |
6974 | if (*left) | |
6975 | **buffer = '\0'; | |
6976 | } | |
6977 | ||
6978 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
6979 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
6980 | decrease *LEFT. Otherwise raise an error. */ | |
6981 | ||
6982 | static void | |
6983 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
6984 | { | |
6985 | int len = hexnumlen (value); | |
6986 | ||
6987 | if (len > *left) | |
6988 | error (_("Packet too long for target.")); | |
6989 | ||
6990 | hexnumstr (*buffer, value); | |
6991 | *buffer += len; | |
6992 | *left -= len; | |
6993 | ||
6994 | /* NUL-terminate the buffer as a convenience, if there is | |
6995 | room. */ | |
6996 | if (*left) | |
6997 | **buffer = '\0'; | |
6998 | } | |
6999 | ||
7000 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
7001 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
7002 | was included, and *ATTACHMENT to point to the start of the annex | |
7003 | if any. The length of the packet isn't needed here; there may | |
7004 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
7005 | ||
7006 | Return 0 if the packet could be parsed, -1 if it could not. If | |
7007 | -1 is returned, the other variables may not be initialized. */ | |
7008 | ||
7009 | static int | |
7010 | remote_hostio_parse_result (char *buffer, int *retcode, | |
7011 | int *remote_errno, char **attachment) | |
7012 | { | |
7013 | char *p, *p2; | |
7014 | ||
7015 | *remote_errno = 0; | |
7016 | *attachment = NULL; | |
7017 | ||
7018 | if (buffer[0] != 'F') | |
7019 | return -1; | |
7020 | ||
7021 | errno = 0; | |
7022 | *retcode = strtol (&buffer[1], &p, 16); | |
7023 | if (errno != 0 || p == &buffer[1]) | |
7024 | return -1; | |
7025 | ||
7026 | /* Check for ",errno". */ | |
7027 | if (*p == ',') | |
7028 | { | |
7029 | errno = 0; | |
7030 | *remote_errno = strtol (p + 1, &p2, 16); | |
7031 | if (errno != 0 || p + 1 == p2) | |
7032 | return -1; | |
7033 | p = p2; | |
7034 | } | |
7035 | ||
7036 | /* Check for ";attachment". If there is no attachment, the | |
7037 | packet should end here. */ | |
7038 | if (*p == ';') | |
7039 | { | |
7040 | *attachment = p + 1; | |
7041 | return 0; | |
7042 | } | |
7043 | else if (*p == '\0') | |
7044 | return 0; | |
7045 | else | |
7046 | return -1; | |
7047 | } | |
7048 | ||
7049 | /* Send a prepared I/O packet to the target and read its response. | |
7050 | The prepared packet is in the global RS->BUF before this function | |
7051 | is called, and the answer is there when we return. | |
7052 | ||
7053 | COMMAND_BYTES is the length of the request to send, which may include | |
7054 | binary data. WHICH_PACKET is the packet configuration to check | |
7055 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
7056 | is set to the error number and -1 is returned. Otherwise the value | |
7057 | returned by the function is returned. | |
7058 | ||
7059 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
7060 | attachment is expected; an error will be reported if there's a | |
7061 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
7062 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
7063 | attachment's length. */ | |
7064 | ||
7065 | static int | |
7066 | remote_hostio_send_command (int command_bytes, int which_packet, | |
7067 | int *remote_errno, char **attachment, | |
7068 | int *attachment_len) | |
7069 | { | |
7070 | struct remote_state *rs = get_remote_state (); | |
7071 | int ret, bytes_read; | |
7072 | char *attachment_tmp; | |
7073 | ||
f1838a98 UW |
7074 | if (!remote_desc |
7075 | || remote_protocol_packets[which_packet].support == PACKET_DISABLE) | |
a6b151f1 DJ |
7076 | { |
7077 | *remote_errno = FILEIO_ENOSYS; | |
7078 | return -1; | |
7079 | } | |
7080 | ||
7081 | putpkt_binary (rs->buf, command_bytes); | |
7082 | bytes_read = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
7083 | ||
7084 | /* If it timed out, something is wrong. Don't try to parse the | |
7085 | buffer. */ | |
7086 | if (bytes_read < 0) | |
7087 | { | |
7088 | *remote_errno = FILEIO_EINVAL; | |
7089 | return -1; | |
7090 | } | |
7091 | ||
7092 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
7093 | { | |
7094 | case PACKET_ERROR: | |
7095 | *remote_errno = FILEIO_EINVAL; | |
7096 | return -1; | |
7097 | case PACKET_UNKNOWN: | |
7098 | *remote_errno = FILEIO_ENOSYS; | |
7099 | return -1; | |
7100 | case PACKET_OK: | |
7101 | break; | |
7102 | } | |
7103 | ||
7104 | if (remote_hostio_parse_result (rs->buf, &ret, remote_errno, | |
7105 | &attachment_tmp)) | |
7106 | { | |
7107 | *remote_errno = FILEIO_EINVAL; | |
7108 | return -1; | |
7109 | } | |
7110 | ||
7111 | /* Make sure we saw an attachment if and only if we expected one. */ | |
7112 | if ((attachment_tmp == NULL && attachment != NULL) | |
7113 | || (attachment_tmp != NULL && attachment == NULL)) | |
7114 | { | |
7115 | *remote_errno = FILEIO_EINVAL; | |
7116 | return -1; | |
7117 | } | |
7118 | ||
7119 | /* If an attachment was found, it must point into the packet buffer; | |
7120 | work out how many bytes there were. */ | |
7121 | if (attachment_tmp != NULL) | |
7122 | { | |
7123 | *attachment = attachment_tmp; | |
7124 | *attachment_len = bytes_read - (*attachment - rs->buf); | |
7125 | } | |
7126 | ||
7127 | return ret; | |
7128 | } | |
7129 | ||
7130 | /* Open FILENAME on the remote target, using FLAGS and MODE. Return a | |
7131 | remote file descriptor, or -1 if an error occurs (and set | |
7132 | *REMOTE_ERRNO). */ | |
7133 | ||
7134 | static int | |
7135 | remote_hostio_open (const char *filename, int flags, int mode, | |
7136 | int *remote_errno) | |
7137 | { | |
7138 | struct remote_state *rs = get_remote_state (); | |
7139 | char *p = rs->buf; | |
7140 | int left = get_remote_packet_size () - 1; | |
7141 | ||
7142 | remote_buffer_add_string (&p, &left, "vFile:open:"); | |
7143 | ||
7144 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
7145 | strlen (filename)); | |
7146 | remote_buffer_add_string (&p, &left, ","); | |
7147 | ||
7148 | remote_buffer_add_int (&p, &left, flags); | |
7149 | remote_buffer_add_string (&p, &left, ","); | |
7150 | ||
7151 | remote_buffer_add_int (&p, &left, mode); | |
7152 | ||
7153 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_open, | |
7154 | remote_errno, NULL, NULL); | |
7155 | } | |
7156 | ||
7157 | /* Write up to LEN bytes from WRITE_BUF to FD on the remote target. | |
7158 | Return the number of bytes written, or -1 if an error occurs (and | |
7159 | set *REMOTE_ERRNO). */ | |
7160 | ||
7161 | static int | |
7162 | remote_hostio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
7163 | ULONGEST offset, int *remote_errno) | |
7164 | { | |
7165 | struct remote_state *rs = get_remote_state (); | |
7166 | char *p = rs->buf; | |
7167 | int left = get_remote_packet_size (); | |
7168 | int out_len; | |
7169 | ||
7170 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); | |
7171 | ||
7172 | remote_buffer_add_int (&p, &left, fd); | |
7173 | remote_buffer_add_string (&p, &left, ","); | |
7174 | ||
7175 | remote_buffer_add_int (&p, &left, offset); | |
7176 | remote_buffer_add_string (&p, &left, ","); | |
7177 | ||
7178 | p += remote_escape_output (write_buf, len, p, &out_len, | |
7179 | get_remote_packet_size () - (p - rs->buf)); | |
7180 | ||
7181 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_pwrite, | |
7182 | remote_errno, NULL, NULL); | |
7183 | } | |
7184 | ||
7185 | /* Read up to LEN bytes FD on the remote target into READ_BUF | |
7186 | Return the number of bytes read, or -1 if an error occurs (and | |
7187 | set *REMOTE_ERRNO). */ | |
7188 | ||
7189 | static int | |
7190 | remote_hostio_pread (int fd, gdb_byte *read_buf, int len, | |
7191 | ULONGEST offset, int *remote_errno) | |
7192 | { | |
7193 | struct remote_state *rs = get_remote_state (); | |
7194 | char *p = rs->buf; | |
7195 | char *attachment; | |
7196 | int left = get_remote_packet_size (); | |
7197 | int ret, attachment_len; | |
7198 | int read_len; | |
7199 | ||
7200 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
7201 | ||
7202 | remote_buffer_add_int (&p, &left, fd); | |
7203 | remote_buffer_add_string (&p, &left, ","); | |
7204 | ||
7205 | remote_buffer_add_int (&p, &left, len); | |
7206 | remote_buffer_add_string (&p, &left, ","); | |
7207 | ||
7208 | remote_buffer_add_int (&p, &left, offset); | |
7209 | ||
7210 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_pread, | |
7211 | remote_errno, &attachment, | |
7212 | &attachment_len); | |
7213 | ||
7214 | if (ret < 0) | |
7215 | return ret; | |
7216 | ||
7217 | read_len = remote_unescape_input (attachment, attachment_len, | |
7218 | read_buf, len); | |
7219 | if (read_len != ret) | |
7220 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
7221 | ||
7222 | return ret; | |
7223 | } | |
7224 | ||
7225 | /* Close FD on the remote target. Return 0, or -1 if an error occurs | |
7226 | (and set *REMOTE_ERRNO). */ | |
7227 | ||
7228 | static int | |
7229 | remote_hostio_close (int fd, int *remote_errno) | |
7230 | { | |
7231 | struct remote_state *rs = get_remote_state (); | |
7232 | char *p = rs->buf; | |
7233 | int left = get_remote_packet_size () - 1; | |
7234 | ||
7235 | remote_buffer_add_string (&p, &left, "vFile:close:"); | |
7236 | ||
7237 | remote_buffer_add_int (&p, &left, fd); | |
7238 | ||
7239 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_close, | |
7240 | remote_errno, NULL, NULL); | |
7241 | } | |
7242 | ||
7243 | /* Unlink FILENAME on the remote target. Return 0, or -1 if an error | |
7244 | occurs (and set *REMOTE_ERRNO). */ | |
7245 | ||
7246 | static int | |
7247 | remote_hostio_unlink (const char *filename, int *remote_errno) | |
7248 | { | |
7249 | struct remote_state *rs = get_remote_state (); | |
7250 | char *p = rs->buf; | |
7251 | int left = get_remote_packet_size () - 1; | |
7252 | ||
7253 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); | |
7254 | ||
7255 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
7256 | strlen (filename)); | |
7257 | ||
7258 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_unlink, | |
7259 | remote_errno, NULL, NULL); | |
7260 | } | |
7261 | ||
7262 | static int | |
7263 | remote_fileio_errno_to_host (int errnum) | |
7264 | { | |
7265 | switch (errnum) | |
7266 | { | |
7267 | case FILEIO_EPERM: | |
7268 | return EPERM; | |
7269 | case FILEIO_ENOENT: | |
7270 | return ENOENT; | |
7271 | case FILEIO_EINTR: | |
7272 | return EINTR; | |
7273 | case FILEIO_EIO: | |
7274 | return EIO; | |
7275 | case FILEIO_EBADF: | |
7276 | return EBADF; | |
7277 | case FILEIO_EACCES: | |
7278 | return EACCES; | |
7279 | case FILEIO_EFAULT: | |
7280 | return EFAULT; | |
7281 | case FILEIO_EBUSY: | |
7282 | return EBUSY; | |
7283 | case FILEIO_EEXIST: | |
7284 | return EEXIST; | |
7285 | case FILEIO_ENODEV: | |
7286 | return ENODEV; | |
7287 | case FILEIO_ENOTDIR: | |
7288 | return ENOTDIR; | |
7289 | case FILEIO_EISDIR: | |
7290 | return EISDIR; | |
7291 | case FILEIO_EINVAL: | |
7292 | return EINVAL; | |
7293 | case FILEIO_ENFILE: | |
7294 | return ENFILE; | |
7295 | case FILEIO_EMFILE: | |
7296 | return EMFILE; | |
7297 | case FILEIO_EFBIG: | |
7298 | return EFBIG; | |
7299 | case FILEIO_ENOSPC: | |
7300 | return ENOSPC; | |
7301 | case FILEIO_ESPIPE: | |
7302 | return ESPIPE; | |
7303 | case FILEIO_EROFS: | |
7304 | return EROFS; | |
7305 | case FILEIO_ENOSYS: | |
7306 | return ENOSYS; | |
7307 | case FILEIO_ENAMETOOLONG: | |
7308 | return ENAMETOOLONG; | |
7309 | } | |
7310 | return -1; | |
7311 | } | |
7312 | ||
7313 | static char * | |
7314 | remote_hostio_error (int errnum) | |
7315 | { | |
7316 | int host_error = remote_fileio_errno_to_host (errnum); | |
7317 | ||
7318 | if (host_error == -1) | |
7319 | error (_("Unknown remote I/O error %d"), errnum); | |
7320 | else | |
7321 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
7322 | } | |
7323 | ||
7324 | static void | |
7325 | fclose_cleanup (void *file) | |
7326 | { | |
7327 | fclose (file); | |
7328 | } | |
7329 | ||
7330 | static void | |
7331 | remote_hostio_close_cleanup (void *opaque) | |
7332 | { | |
7333 | int fd = *(int *) opaque; | |
7334 | int remote_errno; | |
7335 | ||
7336 | remote_hostio_close (fd, &remote_errno); | |
7337 | } | |
7338 | ||
f1838a98 UW |
7339 | |
7340 | static void * | |
7341 | remote_bfd_iovec_open (struct bfd *abfd, void *open_closure) | |
7342 | { | |
7343 | const char *filename = bfd_get_filename (abfd); | |
7344 | int fd, remote_errno; | |
7345 | int *stream; | |
7346 | ||
7347 | gdb_assert (remote_filename_p (filename)); | |
7348 | ||
7349 | fd = remote_hostio_open (filename + 7, FILEIO_O_RDONLY, 0, &remote_errno); | |
7350 | if (fd == -1) | |
7351 | { | |
7352 | errno = remote_fileio_errno_to_host (remote_errno); | |
7353 | bfd_set_error (bfd_error_system_call); | |
7354 | return NULL; | |
7355 | } | |
7356 | ||
7357 | stream = xmalloc (sizeof (int)); | |
7358 | *stream = fd; | |
7359 | return stream; | |
7360 | } | |
7361 | ||
7362 | static int | |
7363 | remote_bfd_iovec_close (struct bfd *abfd, void *stream) | |
7364 | { | |
7365 | int fd = *(int *)stream; | |
7366 | int remote_errno; | |
7367 | ||
7368 | xfree (stream); | |
7369 | ||
7370 | /* Ignore errors on close; these may happen if the remote | |
7371 | connection was already torn down. */ | |
7372 | remote_hostio_close (fd, &remote_errno); | |
7373 | ||
7374 | return 1; | |
7375 | } | |
7376 | ||
7377 | static file_ptr | |
7378 | remote_bfd_iovec_pread (struct bfd *abfd, void *stream, void *buf, | |
7379 | file_ptr nbytes, file_ptr offset) | |
7380 | { | |
7381 | int fd = *(int *)stream; | |
7382 | int remote_errno; | |
7383 | file_ptr pos, bytes; | |
7384 | ||
7385 | pos = 0; | |
7386 | while (nbytes > pos) | |
7387 | { | |
7388 | bytes = remote_hostio_pread (fd, (char *)buf + pos, nbytes - pos, | |
7389 | offset + pos, &remote_errno); | |
7390 | if (bytes == 0) | |
7391 | /* Success, but no bytes, means end-of-file. */ | |
7392 | break; | |
7393 | if (bytes == -1) | |
7394 | { | |
7395 | errno = remote_fileio_errno_to_host (remote_errno); | |
7396 | bfd_set_error (bfd_error_system_call); | |
7397 | return -1; | |
7398 | } | |
7399 | ||
7400 | pos += bytes; | |
7401 | } | |
7402 | ||
7403 | return pos; | |
7404 | } | |
7405 | ||
7406 | static int | |
7407 | remote_bfd_iovec_stat (struct bfd *abfd, void *stream, struct stat *sb) | |
7408 | { | |
7409 | /* FIXME: We should probably implement remote_hostio_stat. */ | |
7410 | sb->st_size = INT_MAX; | |
7411 | return 0; | |
7412 | } | |
7413 | ||
7414 | int | |
7415 | remote_filename_p (const char *filename) | |
7416 | { | |
7417 | return strncmp (filename, "remote:", 7) == 0; | |
7418 | } | |
7419 | ||
7420 | bfd * | |
7421 | remote_bfd_open (const char *remote_file, const char *target) | |
7422 | { | |
7423 | return bfd_openr_iovec (remote_file, target, | |
7424 | remote_bfd_iovec_open, NULL, | |
7425 | remote_bfd_iovec_pread, | |
7426 | remote_bfd_iovec_close, | |
7427 | remote_bfd_iovec_stat); | |
7428 | } | |
7429 | ||
a6b151f1 DJ |
7430 | void |
7431 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
7432 | { | |
7433 | struct cleanup *back_to, *close_cleanup; | |
7434 | int retcode, fd, remote_errno, bytes, io_size; | |
7435 | FILE *file; | |
7436 | gdb_byte *buffer; | |
7437 | int bytes_in_buffer; | |
7438 | int saw_eof; | |
7439 | ULONGEST offset; | |
7440 | ||
7441 | if (!remote_desc) | |
7442 | error (_("command can only be used with remote target")); | |
7443 | ||
7444 | file = fopen (local_file, "rb"); | |
7445 | if (file == NULL) | |
7446 | perror_with_name (local_file); | |
7447 | back_to = make_cleanup (fclose_cleanup, file); | |
7448 | ||
7449 | fd = remote_hostio_open (remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT | |
7450 | | FILEIO_O_TRUNC), | |
7451 | 0700, &remote_errno); | |
7452 | if (fd == -1) | |
7453 | remote_hostio_error (remote_errno); | |
7454 | ||
7455 | /* Send up to this many bytes at once. They won't all fit in the | |
7456 | remote packet limit, so we'll transfer slightly fewer. */ | |
7457 | io_size = get_remote_packet_size (); | |
7458 | buffer = xmalloc (io_size); | |
7459 | make_cleanup (xfree, buffer); | |
7460 | ||
7461 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
7462 | ||
7463 | bytes_in_buffer = 0; | |
7464 | saw_eof = 0; | |
7465 | offset = 0; | |
7466 | while (bytes_in_buffer || !saw_eof) | |
7467 | { | |
7468 | if (!saw_eof) | |
7469 | { | |
7470 | bytes = fread (buffer + bytes_in_buffer, 1, io_size - bytes_in_buffer, | |
7471 | file); | |
7472 | if (bytes == 0) | |
7473 | { | |
7474 | if (ferror (file)) | |
7475 | error (_("Error reading %s."), local_file); | |
7476 | else | |
7477 | { | |
7478 | /* EOF. Unless there is something still in the | |
7479 | buffer from the last iteration, we are done. */ | |
7480 | saw_eof = 1; | |
7481 | if (bytes_in_buffer == 0) | |
7482 | break; | |
7483 | } | |
7484 | } | |
7485 | } | |
7486 | else | |
7487 | bytes = 0; | |
7488 | ||
7489 | bytes += bytes_in_buffer; | |
7490 | bytes_in_buffer = 0; | |
7491 | ||
7492 | retcode = remote_hostio_pwrite (fd, buffer, bytes, offset, &remote_errno); | |
7493 | ||
7494 | if (retcode < 0) | |
7495 | remote_hostio_error (remote_errno); | |
7496 | else if (retcode == 0) | |
7497 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
7498 | else if (retcode < bytes) | |
7499 | { | |
7500 | /* Short write. Save the rest of the read data for the next | |
7501 | write. */ | |
7502 | bytes_in_buffer = bytes - retcode; | |
7503 | memmove (buffer, buffer + retcode, bytes_in_buffer); | |
7504 | } | |
7505 | ||
7506 | offset += retcode; | |
7507 | } | |
7508 | ||
7509 | discard_cleanups (close_cleanup); | |
7510 | if (remote_hostio_close (fd, &remote_errno)) | |
7511 | remote_hostio_error (remote_errno); | |
7512 | ||
7513 | if (from_tty) | |
7514 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
7515 | do_cleanups (back_to); | |
7516 | } | |
7517 | ||
7518 | void | |
7519 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
7520 | { | |
7521 | struct cleanup *back_to, *close_cleanup; | |
7522 | int retcode, fd, remote_errno, bytes, io_size; | |
7523 | FILE *file; | |
7524 | gdb_byte *buffer; | |
7525 | ULONGEST offset; | |
7526 | ||
7527 | if (!remote_desc) | |
7528 | error (_("command can only be used with remote target")); | |
7529 | ||
7530 | fd = remote_hostio_open (remote_file, FILEIO_O_RDONLY, 0, &remote_errno); | |
7531 | if (fd == -1) | |
7532 | remote_hostio_error (remote_errno); | |
7533 | ||
7534 | file = fopen (local_file, "wb"); | |
7535 | if (file == NULL) | |
7536 | perror_with_name (local_file); | |
7537 | back_to = make_cleanup (fclose_cleanup, file); | |
7538 | ||
7539 | /* Send up to this many bytes at once. They won't all fit in the | |
7540 | remote packet limit, so we'll transfer slightly fewer. */ | |
7541 | io_size = get_remote_packet_size (); | |
7542 | buffer = xmalloc (io_size); | |
7543 | make_cleanup (xfree, buffer); | |
7544 | ||
7545 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
7546 | ||
7547 | offset = 0; | |
7548 | while (1) | |
7549 | { | |
7550 | bytes = remote_hostio_pread (fd, buffer, io_size, offset, &remote_errno); | |
7551 | if (bytes == 0) | |
7552 | /* Success, but no bytes, means end-of-file. */ | |
7553 | break; | |
7554 | if (bytes == -1) | |
7555 | remote_hostio_error (remote_errno); | |
7556 | ||
7557 | offset += bytes; | |
7558 | ||
7559 | bytes = fwrite (buffer, 1, bytes, file); | |
7560 | if (bytes == 0) | |
7561 | perror_with_name (local_file); | |
7562 | } | |
7563 | ||
7564 | discard_cleanups (close_cleanup); | |
7565 | if (remote_hostio_close (fd, &remote_errno)) | |
7566 | remote_hostio_error (remote_errno); | |
7567 | ||
7568 | if (from_tty) | |
7569 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
7570 | do_cleanups (back_to); | |
7571 | } | |
7572 | ||
7573 | void | |
7574 | remote_file_delete (const char *remote_file, int from_tty) | |
7575 | { | |
7576 | int retcode, remote_errno; | |
7577 | ||
7578 | if (!remote_desc) | |
7579 | error (_("command can only be used with remote target")); | |
7580 | ||
7581 | retcode = remote_hostio_unlink (remote_file, &remote_errno); | |
7582 | if (retcode == -1) | |
7583 | remote_hostio_error (remote_errno); | |
7584 | ||
7585 | if (from_tty) | |
7586 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
7587 | } | |
7588 | ||
7589 | static void | |
7590 | remote_put_command (char *args, int from_tty) | |
7591 | { | |
7592 | struct cleanup *back_to; | |
7593 | char **argv; | |
7594 | ||
d1a41061 PP |
7595 | if (args == NULL) |
7596 | error_no_arg (_("file to put")); | |
7597 | ||
7598 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
7599 | back_to = make_cleanup_freeargv (argv); |
7600 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
7601 | error (_("Invalid parameters to remote put")); | |
7602 | ||
7603 | remote_file_put (argv[0], argv[1], from_tty); | |
7604 | ||
7605 | do_cleanups (back_to); | |
7606 | } | |
7607 | ||
7608 | static void | |
7609 | remote_get_command (char *args, int from_tty) | |
7610 | { | |
7611 | struct cleanup *back_to; | |
7612 | char **argv; | |
7613 | ||
d1a41061 PP |
7614 | if (args == NULL) |
7615 | error_no_arg (_("file to get")); | |
7616 | ||
7617 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
7618 | back_to = make_cleanup_freeargv (argv); |
7619 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
7620 | error (_("Invalid parameters to remote get")); | |
7621 | ||
7622 | remote_file_get (argv[0], argv[1], from_tty); | |
7623 | ||
7624 | do_cleanups (back_to); | |
7625 | } | |
7626 | ||
7627 | static void | |
7628 | remote_delete_command (char *args, int from_tty) | |
7629 | { | |
7630 | struct cleanup *back_to; | |
7631 | char **argv; | |
7632 | ||
d1a41061 PP |
7633 | if (args == NULL) |
7634 | error_no_arg (_("file to delete")); | |
7635 | ||
7636 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
7637 | back_to = make_cleanup_freeargv (argv); |
7638 | if (argv[0] == NULL || argv[1] != NULL) | |
7639 | error (_("Invalid parameters to remote delete")); | |
7640 | ||
7641 | remote_file_delete (argv[0], from_tty); | |
7642 | ||
7643 | do_cleanups (back_to); | |
7644 | } | |
7645 | ||
7646 | static void | |
7647 | remote_command (char *args, int from_tty) | |
7648 | { | |
7649 | help_list (remote_cmdlist, "remote ", -1, gdb_stdout); | |
7650 | } | |
7651 | ||
b2175913 MS |
7652 | static int remote_target_can_reverse = 1; |
7653 | ||
7654 | static int | |
7655 | remote_can_execute_reverse (void) | |
7656 | { | |
7657 | return remote_target_can_reverse; | |
7658 | } | |
7659 | ||
c906108c | 7660 | static void |
fba45db2 | 7661 | init_remote_ops (void) |
c906108c | 7662 | { |
c5aa993b | 7663 | remote_ops.to_shortname = "remote"; |
c906108c | 7664 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 7665 | remote_ops.to_doc = |
c906108c | 7666 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
7667 | Specify the serial device it is connected to\n\ |
7668 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
7669 | remote_ops.to_open = remote_open; |
7670 | remote_ops.to_close = remote_close; | |
c906108c | 7671 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 7672 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 7673 | remote_ops.to_resume = remote_resume; |
c906108c SS |
7674 | remote_ops.to_wait = remote_wait; |
7675 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
7676 | remote_ops.to_store_registers = remote_store_registers; | |
7677 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 7678 | remote_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 7679 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
7680 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
7681 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
7682 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
7683 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
7684 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; | |
7685 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
7686 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
7687 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
7688 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b JM |
7689 | remote_ops.to_kill = remote_kill; |
7690 | remote_ops.to_load = generic_load; | |
c906108c SS |
7691 | remote_ops.to_mourn_inferior = remote_mourn; |
7692 | remote_ops.to_thread_alive = remote_thread_alive; | |
0f71a2f6 | 7693 | remote_ops.to_find_new_threads = remote_threads_info; |
0caabb7e | 7694 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 7695 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
c906108c | 7696 | remote_ops.to_stop = remote_stop; |
4b8a223f | 7697 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 7698 | remote_ops.to_rcmd = remote_rcmd; |
49d03eab | 7699 | remote_ops.to_log_command = serial_log_command; |
38691318 | 7700 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; |
c906108c | 7701 | remote_ops.to_stratum = process_stratum; |
c5aa993b JM |
7702 | remote_ops.to_has_all_memory = 1; |
7703 | remote_ops.to_has_memory = 1; | |
7704 | remote_ops.to_has_stack = 1; | |
7705 | remote_ops.to_has_registers = 1; | |
7706 | remote_ops.to_has_execution = 1; | |
7707 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
b2175913 | 7708 | remote_ops.to_can_execute_reverse = remote_can_execute_reverse; |
c5aa993b | 7709 | remote_ops.to_magic = OPS_MAGIC; |
fd79ecee | 7710 | remote_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
7711 | remote_ops.to_flash_erase = remote_flash_erase; |
7712 | remote_ops.to_flash_done = remote_flash_done; | |
29709017 | 7713 | remote_ops.to_read_description = remote_read_description; |
08388c79 | 7714 | remote_ops.to_search_memory = remote_search_memory; |
75c99385 PA |
7715 | remote_ops.to_can_async_p = remote_can_async_p; |
7716 | remote_ops.to_is_async_p = remote_is_async_p; | |
7717 | remote_ops.to_async = remote_async; | |
7718 | remote_ops.to_async_mask = remote_async_mask; | |
7719 | remote_ops.to_terminal_inferior = remote_terminal_inferior; | |
7720 | remote_ops.to_terminal_ours = remote_terminal_ours; | |
c906108c SS |
7721 | } |
7722 | ||
7723 | /* Set up the extended remote vector by making a copy of the standard | |
7724 | remote vector and adding to it. */ | |
7725 | ||
7726 | static void | |
fba45db2 | 7727 | init_extended_remote_ops (void) |
c906108c SS |
7728 | { |
7729 | extended_remote_ops = remote_ops; | |
7730 | ||
0f71a2f6 | 7731 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 7732 | extended_remote_ops.to_longname = |
c906108c | 7733 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 7734 | extended_remote_ops.to_doc = |
c906108c | 7735 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
39237dd1 PA |
7736 | Specify the serial device it is connected to (e.g. /dev/ttya)."; |
7737 | extended_remote_ops.to_open = extended_remote_open; | |
c906108c SS |
7738 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
7739 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
2d717e4f DJ |
7740 | extended_remote_ops.to_detach = extended_remote_detach; |
7741 | extended_remote_ops.to_attach = extended_remote_attach; | |
82f73884 | 7742 | extended_remote_ops.to_kill = extended_remote_kill; |
0f71a2f6 JM |
7743 | } |
7744 | ||
6426a772 JM |
7745 | static int |
7746 | remote_can_async_p (void) | |
7747 | { | |
c6ebd6cf | 7748 | if (!target_async_permitted) |
75c99385 PA |
7749 | /* We only enable async when the user specifically asks for it. */ |
7750 | return 0; | |
7751 | ||
23860348 | 7752 | /* We're async whenever the serial device is. */ |
b84876c2 | 7753 | return remote_async_mask_value && serial_can_async_p (remote_desc); |
6426a772 JM |
7754 | } |
7755 | ||
7756 | static int | |
7757 | remote_is_async_p (void) | |
7758 | { | |
c6ebd6cf | 7759 | if (!target_async_permitted) |
75c99385 PA |
7760 | /* We only enable async when the user specifically asks for it. */ |
7761 | return 0; | |
7762 | ||
23860348 | 7763 | /* We're async whenever the serial device is. */ |
b84876c2 | 7764 | return remote_async_mask_value && serial_is_async_p (remote_desc); |
6426a772 JM |
7765 | } |
7766 | ||
2acceee2 JM |
7767 | /* Pass the SERIAL event on and up to the client. One day this code |
7768 | will be able to delay notifying the client of an event until the | |
23860348 | 7769 | point where an entire packet has been received. */ |
2acceee2 | 7770 | |
2bc416ba | 7771 | static void (*async_client_callback) (enum inferior_event_type event_type, |
23860348 | 7772 | void *context); |
2acceee2 JM |
7773 | static void *async_client_context; |
7774 | static serial_event_ftype remote_async_serial_handler; | |
7775 | ||
6426a772 | 7776 | static void |
819cc324 | 7777 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 7778 | { |
2acceee2 JM |
7779 | /* Don't propogate error information up to the client. Instead let |
7780 | the client find out about the error by querying the target. */ | |
7781 | async_client_callback (INF_REG_EVENT, async_client_context); | |
7782 | } | |
7783 | ||
7784 | static void | |
2bc416ba | 7785 | remote_async (void (*callback) (enum inferior_event_type event_type, |
23860348 | 7786 | void *context), void *context) |
2acceee2 | 7787 | { |
b84876c2 | 7788 | if (remote_async_mask_value == 0) |
8e65ff28 | 7789 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 7790 | _("Calling remote_async when async is masked")); |
ed9a39eb | 7791 | |
2acceee2 JM |
7792 | if (callback != NULL) |
7793 | { | |
2cd58942 | 7794 | serial_async (remote_desc, remote_async_serial_handler, NULL); |
2acceee2 JM |
7795 | async_client_callback = callback; |
7796 | async_client_context = context; | |
7797 | } | |
7798 | else | |
2cd58942 | 7799 | serial_async (remote_desc, NULL, NULL); |
6426a772 JM |
7800 | } |
7801 | ||
b84876c2 PA |
7802 | static int |
7803 | remote_async_mask (int new_mask) | |
7804 | { | |
7805 | int curr_mask = remote_async_mask_value; | |
7806 | remote_async_mask_value = new_mask; | |
7807 | return curr_mask; | |
7808 | } | |
7809 | ||
5a2468f5 | 7810 | static void |
c2d11a7d | 7811 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 7812 | { |
427c3a89 | 7813 | help_list (remote_set_cmdlist, "set remote ", -1, gdb_stdout); |
5a2468f5 JM |
7814 | } |
7815 | ||
d471ea57 AC |
7816 | static void |
7817 | show_remote_cmd (char *args, int from_tty) | |
7818 | { | |
37a105a1 | 7819 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 7820 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 DJ |
7821 | struct cleanup *showlist_chain; |
7822 | struct cmd_list_element *list = remote_show_cmdlist; | |
7823 | ||
7824 | showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist"); | |
7825 | for (; list != NULL; list = list->next) | |
7826 | if (strcmp (list->name, "Z-packet") == 0) | |
7827 | continue; | |
427c3a89 DJ |
7828 | else if (list->type == not_set_cmd) |
7829 | /* Alias commands are exactly like the original, except they | |
7830 | don't have the normal type. */ | |
7831 | continue; | |
7832 | else | |
37a105a1 DJ |
7833 | { |
7834 | struct cleanup *option_chain | |
7835 | = make_cleanup_ui_out_tuple_begin_end (uiout, "option"); | |
7836 | ui_out_field_string (uiout, "name", list->name); | |
7837 | ui_out_text (uiout, ": "); | |
427c3a89 DJ |
7838 | if (list->type == show_cmd) |
7839 | do_setshow_command ((char *) NULL, from_tty, list); | |
7840 | else | |
7841 | cmd_func (list, NULL, from_tty); | |
37a105a1 DJ |
7842 | /* Close the tuple. */ |
7843 | do_cleanups (option_chain); | |
7844 | } | |
427c3a89 DJ |
7845 | |
7846 | /* Close the tuple. */ | |
7847 | do_cleanups (showlist_chain); | |
d471ea57 | 7848 | } |
5a2468f5 | 7849 | |
0f71a2f6 | 7850 | |
23860348 | 7851 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
7852 | static void |
7853 | remote_new_objfile (struct objfile *objfile) | |
7854 | { | |
23860348 | 7855 | if (remote_desc != 0) /* Have a remote connection. */ |
06d3b283 | 7856 | remote_check_symbols (objfile); |
dc8acb97 MS |
7857 | } |
7858 | ||
c906108c | 7859 | void |
fba45db2 | 7860 | _initialize_remote (void) |
c906108c | 7861 | { |
ea9c271d DJ |
7862 | struct remote_state *rs; |
7863 | ||
0f71a2f6 | 7864 | /* architecture specific data */ |
2bc416ba | 7865 | remote_gdbarch_data_handle = |
23860348 | 7866 | gdbarch_data_register_post_init (init_remote_state); |
29709017 DJ |
7867 | remote_g_packet_data_handle = |
7868 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 7869 | |
ea9c271d DJ |
7870 | /* Initialize the per-target state. At the moment there is only one |
7871 | of these, not one per target. Only one target is active at a | |
7872 | time. The default buffer size is unimportant; it will be expanded | |
7873 | whenever a larger buffer is needed. */ | |
0b83947e | 7874 | rs = get_remote_state_raw (); |
ea9c271d DJ |
7875 | rs->buf_size = 400; |
7876 | rs->buf = xmalloc (rs->buf_size); | |
7877 | ||
c906108c SS |
7878 | init_remote_ops (); |
7879 | add_target (&remote_ops); | |
7880 | ||
7881 | init_extended_remote_ops (); | |
7882 | add_target (&extended_remote_ops); | |
cce74817 | 7883 | |
dc8acb97 | 7884 | /* Hook into new objfile notification. */ |
06d3b283 | 7885 | observer_attach_new_objfile (remote_new_objfile); |
dc8acb97 | 7886 | |
b803fb0f DJ |
7887 | /* Set up signal handlers. */ |
7888 | sigint_remote_token = | |
7889 | create_async_signal_handler (async_remote_interrupt, NULL); | |
7890 | sigint_remote_twice_token = | |
7891 | create_async_signal_handler (inferior_event_handler_wrapper, NULL); | |
7892 | ||
c906108c SS |
7893 | #if 0 |
7894 | init_remote_threadtests (); | |
7895 | #endif | |
7896 | ||
23860348 | 7897 | /* set/show remote ... */ |
d471ea57 | 7898 | |
1bedd215 | 7899 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
7900 | Remote protocol specific variables\n\ |
7901 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 7902 | the packets being used"), |
cff3e48b | 7903 | &remote_set_cmdlist, "set remote ", |
23860348 | 7904 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 7905 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
7906 | Remote protocol specific variables\n\ |
7907 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 7908 | the packets being used"), |
cff3e48b | 7909 | &remote_show_cmdlist, "show remote ", |
23860348 | 7910 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 7911 | |
1a966eab AC |
7912 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
7913 | Compare section data on target to the exec file.\n\ | |
7914 | Argument is a single section name (default: all loaded sections)."), | |
c906108c SS |
7915 | &cmdlist); |
7916 | ||
1a966eab AC |
7917 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
7918 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
7919 | maintenance packet TEXT\n\ |
7920 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
7921 | this command sends the string TEXT to the inferior, and displays the\n\ | |
7922 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 7923 | terminating `#' character and checksum."), |
c906108c SS |
7924 | &maintenancelist); |
7925 | ||
7915a72c AC |
7926 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
7927 | Set whether to send break if interrupted."), _("\ | |
7928 | Show whether to send break if interrupted."), _("\ | |
7929 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
2c5b56ce | 7930 | NULL, NULL, /* FIXME: i18n: Whether to send break if interrupted is %s. */ |
e707bbc2 | 7931 | &setlist, &showlist); |
c906108c | 7932 | |
23860348 | 7933 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 7934 | |
1a966eab AC |
7935 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
7936 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 7937 | &setlist); |
1a966eab AC |
7938 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
7939 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
7940 | &showlist); |
7941 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
7942 | set_memory_write_packet_size, _("\ |
7943 | Set the maximum number of bytes per memory-write packet.\n\ | |
7944 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
7945 | default packet size. The actual limit is further reduced\n\ | |
7946 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
7947 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
7948 | &remote_set_cmdlist); |
7949 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
7950 | set_memory_read_packet_size, _("\ |
7951 | Set the maximum number of bytes per memory-read packet.\n\ | |
7952 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
7953 | default packet size. The actual limit is further reduced\n\ | |
7954 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
7955 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
7956 | &remote_set_cmdlist); |
7957 | add_cmd ("memory-write-packet-size", no_class, | |
7958 | show_memory_write_packet_size, | |
1a966eab | 7959 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
7960 | &remote_show_cmdlist); |
7961 | add_cmd ("memory-read-packet-size", no_class, | |
7962 | show_memory_read_packet_size, | |
1a966eab | 7963 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 7964 | &remote_show_cmdlist); |
c906108c | 7965 | |
b3f42336 | 7966 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
7967 | &remote_hw_watchpoint_limit, _("\ |
7968 | Set the maximum number of target hardware watchpoints."), _("\ | |
7969 | Show the maximum number of target hardware watchpoints."), _("\ | |
7970 | Specify a negative limit for unlimited."), | |
2c5b56ce | 7971 | NULL, NULL, /* FIXME: i18n: The maximum number of target hardware watchpoints is %s. */ |
b3f42336 AC |
7972 | &remote_set_cmdlist, &remote_show_cmdlist); |
7973 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, | |
7915a72c AC |
7974 | &remote_hw_breakpoint_limit, _("\ |
7975 | Set the maximum number of target hardware breakpoints."), _("\ | |
7976 | Show the maximum number of target hardware breakpoints."), _("\ | |
7977 | Specify a negative limit for unlimited."), | |
2c5b56ce | 7978 | NULL, NULL, /* FIXME: i18n: The maximum number of target hardware breakpoints is %s. */ |
b3f42336 | 7979 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 7980 | |
4d28ad1e AC |
7981 | add_setshow_integer_cmd ("remoteaddresssize", class_obscure, |
7982 | &remote_address_size, _("\ | |
7983 | Set the maximum size of the address (in bits) in a memory packet."), _("\ | |
7984 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
7985 | NULL, | |
7986 | NULL, /* FIXME: i18n: */ | |
7987 | &setlist, &showlist); | |
c906108c | 7988 | |
444abaca | 7989 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 7990 | "X", "binary-download", 1); |
0f71a2f6 | 7991 | |
444abaca | 7992 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 7993 | "vCont", "verbose-resume", 0); |
506fb367 | 7994 | |
89be2091 DJ |
7995 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
7996 | "QPassSignals", "pass-signals", 0); | |
7997 | ||
444abaca | 7998 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 7999 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 8000 | |
444abaca | 8001 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 8002 | "P", "set-register", 1); |
d471ea57 | 8003 | |
444abaca | 8004 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 8005 | "p", "fetch-register", 1); |
b96ec7ac | 8006 | |
444abaca | 8007 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 8008 | "Z0", "software-breakpoint", 0); |
d471ea57 | 8009 | |
444abaca | 8010 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 8011 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 8012 | |
444abaca | 8013 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 8014 | "Z2", "write-watchpoint", 0); |
d471ea57 | 8015 | |
444abaca | 8016 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 8017 | "Z3", "read-watchpoint", 0); |
d471ea57 | 8018 | |
444abaca | 8019 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 8020 | "Z4", "access-watchpoint", 0); |
d471ea57 | 8021 | |
0876f84a DJ |
8022 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
8023 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 8024 | |
23181151 DJ |
8025 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
8026 | "qXfer:features:read", "target-features", 0); | |
8027 | ||
cfa9d6d9 DJ |
8028 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
8029 | "qXfer:libraries:read", "library-info", 0); | |
8030 | ||
fd79ecee DJ |
8031 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
8032 | "qXfer:memory-map:read", "memory-map", 0); | |
8033 | ||
0e7f50da UW |
8034 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_read], |
8035 | "qXfer:spu:read", "read-spu-object", 0); | |
8036 | ||
8037 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_write], | |
8038 | "qXfer:spu:write", "write-spu-object", 0); | |
8039 | ||
444abaca | 8040 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 8041 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
8042 | 0); |
8043 | ||
be2a5f71 DJ |
8044 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
8045 | "qSupported", "supported-packets", 0); | |
8046 | ||
08388c79 DE |
8047 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory], |
8048 | "qSearch:memory", "search-memory", 0); | |
8049 | ||
a6b151f1 DJ |
8050 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
8051 | "vFile:open", "hostio-open", 0); | |
8052 | ||
8053 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
8054 | "vFile:pread", "hostio-pread", 0); | |
8055 | ||
8056 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
8057 | "vFile:pwrite", "hostio-pwrite", 0); | |
8058 | ||
8059 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
8060 | "vFile:close", "hostio-close", 0); | |
8061 | ||
8062 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
8063 | "vFile:unlink", "hostio-unlink", 0); | |
8064 | ||
2d717e4f DJ |
8065 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
8066 | "vAttach", "attach", 0); | |
8067 | ||
8068 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
8069 | "vRun", "run", 0); | |
8070 | ||
a6f3e723 SL |
8071 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode], |
8072 | "QStartNoAckMode", "noack", 0); | |
8073 | ||
82f73884 PA |
8074 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill], |
8075 | "vKill", "kill", 0); | |
8076 | ||
37a105a1 DJ |
8077 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
8078 | Z sub-packet has its own set and show commands, but users may | |
8079 | have sets to this variable in their .gdbinit files (or in their | |
8080 | documentation). */ | |
e9e68a56 | 8081 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
8082 | &remote_Z_packet_detect, _("\ |
8083 | Set use of remote protocol `Z' packets"), _("\ | |
8084 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 8085 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 8086 | packets."), |
e9e68a56 | 8087 | set_remote_protocol_Z_packet_cmd, |
2c5b56ce | 8088 | show_remote_protocol_Z_packet_cmd, /* FIXME: i18n: Use of remote protocol `Z' packets is %s. */ |
e9e68a56 | 8089 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 8090 | |
a6b151f1 DJ |
8091 | add_prefix_cmd ("remote", class_files, remote_command, _("\ |
8092 | Manipulate files on the remote system\n\ | |
8093 | Transfer files to and from the remote target system."), | |
8094 | &remote_cmdlist, "remote ", | |
8095 | 0 /* allow-unknown */, &cmdlist); | |
8096 | ||
8097 | add_cmd ("put", class_files, remote_put_command, | |
8098 | _("Copy a local file to the remote system."), | |
8099 | &remote_cmdlist); | |
8100 | ||
8101 | add_cmd ("get", class_files, remote_get_command, | |
8102 | _("Copy a remote file to the local system."), | |
8103 | &remote_cmdlist); | |
8104 | ||
8105 | add_cmd ("delete", class_files, remote_delete_command, | |
8106 | _("Delete a remote file."), | |
8107 | &remote_cmdlist); | |
8108 | ||
2d717e4f DJ |
8109 | remote_exec_file = xstrdup (""); |
8110 | add_setshow_string_noescape_cmd ("exec-file", class_files, | |
8111 | &remote_exec_file, _("\ | |
8112 | Set the remote pathname for \"run\""), _("\ | |
8113 | Show the remote pathname for \"run\""), NULL, NULL, NULL, | |
8114 | &remote_set_cmdlist, &remote_show_cmdlist); | |
8115 | ||
449092f6 CV |
8116 | /* Eventually initialize fileio. See fileio.c */ |
8117 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
79d7f229 PA |
8118 | |
8119 | /* Take advantage of the fact that the LWP field is not used, to tag | |
8120 | special ptids with it set to != 0. */ | |
82f73884 PA |
8121 | magic_null_ptid = ptid_build (42000, 1, -1); |
8122 | not_sent_ptid = ptid_build (42000, 1, -2); | |
8123 | any_thread_ptid = ptid_build (42000, 1, 0); | |
c906108c | 8124 | } |