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