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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 | ||
a14ed312 | 214 | void _initialize_remote (void); |
c906108c | 215 | |
a6b151f1 DJ |
216 | /* For "remote". */ |
217 | ||
218 | static struct cmd_list_element *remote_cmdlist; | |
219 | ||
bb572ddd DJ |
220 | /* For "set remote" and "show remote". */ |
221 | ||
222 | static struct cmd_list_element *remote_set_cmdlist; | |
223 | static struct cmd_list_element *remote_show_cmdlist; | |
224 | ||
ea9c271d DJ |
225 | /* Description of the remote protocol state for the currently |
226 | connected target. This is per-target state, and independent of the | |
227 | selected architecture. */ | |
228 | ||
229 | struct remote_state | |
230 | { | |
231 | /* A buffer to use for incoming packets, and its current size. The | |
232 | buffer is grown dynamically for larger incoming packets. | |
233 | Outgoing packets may also be constructed in this buffer. | |
234 | BUF_SIZE is always at least REMOTE_PACKET_SIZE; | |
235 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing | |
236 | packets. */ | |
237 | char *buf; | |
238 | long buf_size; | |
be2a5f71 DJ |
239 | |
240 | /* If we negotiated packet size explicitly (and thus can bypass | |
241 | heuristics for the largest packet size that will not overflow | |
242 | a buffer in the stub), this will be set to that packet size. | |
243 | Otherwise zero, meaning to use the guessed size. */ | |
244 | long explicit_packet_size; | |
2d717e4f DJ |
245 | |
246 | /* remote_wait is normally called when the target is running and | |
247 | waits for a stop reply packet. But sometimes we need to call it | |
248 | when the target is already stopped. We can send a "?" packet | |
249 | and have remote_wait read the response. Or, if we already have | |
250 | the response, we can stash it in BUF and tell remote_wait to | |
251 | skip calling getpkt. This flag is set when BUF contains a | |
252 | stop reply packet and the target is not waiting. */ | |
253 | int cached_wait_status; | |
a6f3e723 SL |
254 | |
255 | /* True, if in no ack mode. That is, neither GDB nor the stub will | |
256 | expect acks from each other. The connection is assumed to be | |
257 | reliable. */ | |
258 | int noack_mode; | |
82f73884 PA |
259 | |
260 | /* True if we're connected in extended remote mode. */ | |
261 | int extended; | |
262 | ||
263 | /* True if the stub reported support for multi-process | |
264 | extensions. */ | |
265 | int multi_process_aware; | |
ea9c271d DJ |
266 | }; |
267 | ||
82f73884 PA |
268 | /* Returns true if the multi-process extensions are in effect. */ |
269 | static int | |
270 | remote_multi_process_p (struct remote_state *rs) | |
271 | { | |
272 | return rs->extended && rs->multi_process_aware; | |
273 | } | |
274 | ||
ea9c271d DJ |
275 | /* This data could be associated with a target, but we do not always |
276 | have access to the current target when we need it, so for now it is | |
277 | static. This will be fine for as long as only one target is in use | |
278 | at a time. */ | |
279 | static struct remote_state remote_state; | |
280 | ||
281 | static struct remote_state * | |
0b83947e | 282 | get_remote_state_raw (void) |
ea9c271d DJ |
283 | { |
284 | return &remote_state; | |
285 | } | |
286 | ||
287 | /* Description of the remote protocol for a given architecture. */ | |
d01949b6 | 288 | |
ad10f812 AC |
289 | struct packet_reg |
290 | { | |
291 | long offset; /* Offset into G packet. */ | |
292 | long regnum; /* GDB's internal register number. */ | |
293 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 294 | int in_g_packet; /* Always part of G packet. */ |
1cf3db46 | 295 | /* long size in bytes; == register_size (target_gdbarch, regnum); |
23860348 | 296 | at present. */ |
1cf3db46 | 297 | /* char *name; == gdbarch_register_name (target_gdbarch, regnum); |
c9f4d572 | 298 | at present. */ |
ad10f812 AC |
299 | }; |
300 | ||
ea9c271d | 301 | struct remote_arch_state |
d01949b6 | 302 | { |
ad10f812 AC |
303 | /* Description of the remote protocol registers. */ |
304 | long sizeof_g_packet; | |
b323314b AC |
305 | |
306 | /* Description of the remote protocol registers indexed by REGNUM | |
f57d151a | 307 | (making an array gdbarch_num_regs in size). */ |
b323314b | 308 | struct packet_reg *regs; |
ad10f812 | 309 | |
d01949b6 AC |
310 | /* This is the size (in chars) of the first response to the ``g'' |
311 | packet. It is used as a heuristic when determining the maximum | |
312 | size of memory-read and memory-write packets. A target will | |
313 | typically only reserve a buffer large enough to hold the ``g'' | |
314 | packet. The size does not include packet overhead (headers and | |
23860348 | 315 | trailers). */ |
d01949b6 AC |
316 | long actual_register_packet_size; |
317 | ||
318 | /* This is the maximum size (in chars) of a non read/write packet. | |
23860348 | 319 | It is also used as a cap on the size of read/write packets. */ |
d01949b6 AC |
320 | long remote_packet_size; |
321 | }; | |
322 | ||
3c3bea1c | 323 | |
d01949b6 AC |
324 | /* Handle for retreving the remote protocol data from gdbarch. */ |
325 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
326 | ||
ea9c271d DJ |
327 | static struct remote_arch_state * |
328 | get_remote_arch_state (void) | |
d01949b6 | 329 | { |
1cf3db46 | 330 | return gdbarch_data (target_gdbarch, remote_gdbarch_data_handle); |
d01949b6 AC |
331 | } |
332 | ||
0b83947e DJ |
333 | /* Fetch the global remote target state. */ |
334 | ||
335 | static struct remote_state * | |
336 | get_remote_state (void) | |
337 | { | |
338 | /* Make sure that the remote architecture state has been | |
339 | initialized, because doing so might reallocate rs->buf. Any | |
340 | function which calls getpkt also needs to be mindful of changes | |
341 | to rs->buf, but this call limits the number of places which run | |
342 | into trouble. */ | |
343 | get_remote_arch_state (); | |
344 | ||
345 | return get_remote_state_raw (); | |
346 | } | |
347 | ||
74ca34ce DJ |
348 | static int |
349 | compare_pnums (const void *lhs_, const void *rhs_) | |
350 | { | |
351 | const struct packet_reg * const *lhs = lhs_; | |
352 | const struct packet_reg * const *rhs = rhs_; | |
353 | ||
354 | if ((*lhs)->pnum < (*rhs)->pnum) | |
355 | return -1; | |
356 | else if ((*lhs)->pnum == (*rhs)->pnum) | |
357 | return 0; | |
358 | else | |
359 | return 1; | |
360 | } | |
361 | ||
d01949b6 AC |
362 | static void * |
363 | init_remote_state (struct gdbarch *gdbarch) | |
364 | { | |
74ca34ce | 365 | int regnum, num_remote_regs, offset; |
0b83947e | 366 | struct remote_state *rs = get_remote_state_raw (); |
ea9c271d | 367 | struct remote_arch_state *rsa; |
74ca34ce | 368 | struct packet_reg **remote_regs; |
ea9c271d DJ |
369 | |
370 | rsa = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_arch_state); | |
d01949b6 | 371 | |
123dc839 DJ |
372 | /* Use the architecture to build a regnum<->pnum table, which will be |
373 | 1:1 unless a feature set specifies otherwise. */ | |
f57d151a | 374 | rsa->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, |
4a22f64d | 375 | gdbarch_num_regs (gdbarch), |
f57d151a | 376 | struct packet_reg); |
4a22f64d | 377 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) |
ad10f812 | 378 | { |
ea9c271d | 379 | struct packet_reg *r = &rsa->regs[regnum]; |
baef701f | 380 | |
4a22f64d | 381 | if (register_size (gdbarch, regnum) == 0) |
baef701f DJ |
382 | /* Do not try to fetch zero-sized (placeholder) registers. */ |
383 | r->pnum = -1; | |
384 | else | |
385 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
386 | ||
b323314b | 387 | r->regnum = regnum; |
74ca34ce DJ |
388 | } |
389 | ||
390 | /* Define the g/G packet format as the contents of each register | |
391 | with a remote protocol number, in order of ascending protocol | |
392 | number. */ | |
393 | ||
4a22f64d UW |
394 | remote_regs = alloca (gdbarch_num_regs (gdbarch) |
395 | * sizeof (struct packet_reg *)); | |
f57d151a | 396 | for (num_remote_regs = 0, regnum = 0; |
4a22f64d | 397 | regnum < gdbarch_num_regs (gdbarch); |
f57d151a | 398 | regnum++) |
74ca34ce DJ |
399 | if (rsa->regs[regnum].pnum != -1) |
400 | remote_regs[num_remote_regs++] = &rsa->regs[regnum]; | |
7d58c67d | 401 | |
74ca34ce DJ |
402 | qsort (remote_regs, num_remote_regs, sizeof (struct packet_reg *), |
403 | compare_pnums); | |
404 | ||
405 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
406 | { | |
407 | remote_regs[regnum]->in_g_packet = 1; | |
408 | remote_regs[regnum]->offset = offset; | |
4a22f64d | 409 | offset += register_size (gdbarch, remote_regs[regnum]->regnum); |
ad10f812 AC |
410 | } |
411 | ||
74ca34ce DJ |
412 | /* Record the maximum possible size of the g packet - it may turn out |
413 | to be smaller. */ | |
414 | rsa->sizeof_g_packet = offset; | |
415 | ||
d01949b6 AC |
416 | /* Default maximum number of characters in a packet body. Many |
417 | remote stubs have a hardwired buffer size of 400 bytes | |
418 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
419 | as the maximum packet-size to ensure that the packet and an extra | |
420 | NUL character can always fit in the buffer. This stops GDB | |
421 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d DJ |
422 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
423 | rsa->remote_packet_size = 400 - 1; | |
d01949b6 | 424 | |
ea9c271d DJ |
425 | /* This one is filled in when a ``g'' packet is received. */ |
426 | rsa->actual_register_packet_size = 0; | |
427 | ||
428 | /* Should rsa->sizeof_g_packet needs more space than the | |
ad10f812 AC |
429 | default, adjust the size accordingly. Remember that each byte is |
430 | encoded as two characters. 32 is the overhead for the packet | |
431 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 432 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 433 | little. */ |
ea9c271d DJ |
434 | if (rsa->sizeof_g_packet > ((rsa->remote_packet_size - 32) / 2)) |
435 | rsa->remote_packet_size = (rsa->sizeof_g_packet * 2 + 32); | |
802188a7 | 436 | |
ea9c271d DJ |
437 | /* Make sure that the packet buffer is plenty big enough for |
438 | this architecture. */ | |
439 | if (rs->buf_size < rsa->remote_packet_size) | |
440 | { | |
441 | rs->buf_size = 2 * rsa->remote_packet_size; | |
7fca722e | 442 | rs->buf = xrealloc (rs->buf, rs->buf_size); |
ea9c271d | 443 | } |
6d820c5c | 444 | |
ea9c271d DJ |
445 | return rsa; |
446 | } | |
447 | ||
448 | /* Return the current allowed size of a remote packet. This is | |
449 | inferred from the current architecture, and should be used to | |
450 | limit the length of outgoing packets. */ | |
451 | static long | |
452 | get_remote_packet_size (void) | |
453 | { | |
be2a5f71 | 454 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
455 | struct remote_arch_state *rsa = get_remote_arch_state (); |
456 | ||
be2a5f71 DJ |
457 | if (rs->explicit_packet_size) |
458 | return rs->explicit_packet_size; | |
459 | ||
ea9c271d | 460 | return rsa->remote_packet_size; |
d01949b6 AC |
461 | } |
462 | ||
ad10f812 | 463 | static struct packet_reg * |
ea9c271d | 464 | packet_reg_from_regnum (struct remote_arch_state *rsa, long regnum) |
ad10f812 | 465 | { |
1cf3db46 | 466 | if (regnum < 0 && regnum >= gdbarch_num_regs (target_gdbarch)) |
b323314b AC |
467 | return NULL; |
468 | else | |
ad10f812 | 469 | { |
ea9c271d | 470 | struct packet_reg *r = &rsa->regs[regnum]; |
b323314b AC |
471 | gdb_assert (r->regnum == regnum); |
472 | return r; | |
ad10f812 | 473 | } |
ad10f812 AC |
474 | } |
475 | ||
476 | static struct packet_reg * | |
ea9c271d | 477 | packet_reg_from_pnum (struct remote_arch_state *rsa, LONGEST pnum) |
ad10f812 | 478 | { |
b323314b | 479 | int i; |
1cf3db46 | 480 | for (i = 0; i < gdbarch_num_regs (target_gdbarch); i++) |
ad10f812 | 481 | { |
ea9c271d | 482 | struct packet_reg *r = &rsa->regs[i]; |
b323314b AC |
483 | if (r->pnum == pnum) |
484 | return r; | |
ad10f812 AC |
485 | } |
486 | return NULL; | |
d01949b6 AC |
487 | } |
488 | ||
3c3bea1c GS |
489 | /* FIXME: graces/2002-08-08: These variables should eventually be |
490 | bound to an instance of the target object (as in gdbarch-tdep()), | |
491 | when such a thing exists. */ | |
492 | ||
493 | /* This is set to the data address of the access causing the target | |
494 | to stop for a watchpoint. */ | |
495 | static CORE_ADDR remote_watch_data_address; | |
496 | ||
94e08568 | 497 | /* This is non-zero if target stopped for a watchpoint. */ |
3c3bea1c GS |
498 | static int remote_stopped_by_watchpoint_p; |
499 | ||
c906108c SS |
500 | static struct target_ops remote_ops; |
501 | ||
502 | static struct target_ops extended_remote_ops; | |
503 | ||
b84876c2 PA |
504 | static int remote_async_mask_value = 1; |
505 | ||
6426a772 JM |
506 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
507 | ``forever'' still use the normal timeout mechanism. This is | |
508 | currently used by the ASYNC code to guarentee that target reads | |
509 | during the initial connect always time-out. Once getpkt has been | |
510 | modified to return a timeout indication and, in turn | |
511 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 512 | this can go away. */ |
6426a772 JM |
513 | static int wait_forever_enabled_p = 1; |
514 | ||
515 | ||
c906108c SS |
516 | /* This variable chooses whether to send a ^C or a break when the user |
517 | requests program interruption. Although ^C is usually what remote | |
518 | systems expect, and that is the default here, sometimes a break is | |
519 | preferable instead. */ | |
520 | ||
521 | static int remote_break; | |
522 | ||
c906108c SS |
523 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
524 | remote_open knows that we don't have a file open when the program | |
525 | starts. */ | |
819cc324 | 526 | static struct serial *remote_desc = NULL; |
c906108c | 527 | |
c906108c SS |
528 | /* This variable sets the number of bits in an address that are to be |
529 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
530 | leading zeros, the entire address would be sent. This variable | |
531 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The | |
532 | initial implementation of remote.c restricted the address sent in | |
533 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
534 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
535 | address was never sent. Since fixing this bug may cause a break in | |
536 | some remote targets this variable is principly provided to | |
23860348 | 537 | facilitate backward compatibility. */ |
c906108c SS |
538 | |
539 | static int remote_address_size; | |
540 | ||
75c99385 PA |
541 | /* Temporary to track who currently owns the terminal. See |
542 | remote_terminal_* for more details. */ | |
6426a772 JM |
543 | |
544 | static int remote_async_terminal_ours_p; | |
545 | ||
2d717e4f DJ |
546 | /* The executable file to use for "run" on the remote side. */ |
547 | ||
548 | static char *remote_exec_file = ""; | |
549 | ||
11cf8741 | 550 | \f |
11cf8741 | 551 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
552 | memory read/write packet. MIN (rsa->remote_packet_size, |
553 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 554 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
555 | (speed up transfers). The variables ``preferred_*'' (the user |
556 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 557 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
558 | |
559 | struct memory_packet_config | |
560 | { | |
561 | char *name; | |
562 | long size; | |
563 | int fixed_p; | |
564 | }; | |
565 | ||
566 | /* Compute the current size of a read/write packet. Since this makes | |
567 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
568 | ||
569 | static long | |
570 | get_memory_packet_size (struct memory_packet_config *config) | |
571 | { | |
d01949b6 | 572 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
573 | struct remote_arch_state *rsa = get_remote_arch_state (); |
574 | ||
11cf8741 JM |
575 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk |
576 | law?) that some hosts don't cope very well with large alloca() | |
577 | calls. Eventually the alloca() code will be replaced by calls to | |
578 | xmalloc() and make_cleanups() allowing this restriction to either | |
23860348 | 579 | be lifted or removed. */ |
11cf8741 JM |
580 | #ifndef MAX_REMOTE_PACKET_SIZE |
581 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
582 | #endif | |
3de11b2e | 583 | /* NOTE: 20 ensures we can write at least one byte. */ |
11cf8741 | 584 | #ifndef MIN_REMOTE_PACKET_SIZE |
3de11b2e | 585 | #define MIN_REMOTE_PACKET_SIZE 20 |
11cf8741 JM |
586 | #endif |
587 | long what_they_get; | |
588 | if (config->fixed_p) | |
589 | { | |
590 | if (config->size <= 0) | |
591 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
592 | else | |
593 | what_they_get = config->size; | |
594 | } | |
595 | else | |
596 | { | |
ea9c271d | 597 | what_they_get = get_remote_packet_size (); |
23860348 | 598 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
599 | if (config->size > 0 |
600 | && what_they_get > config->size) | |
601 | what_they_get = config->size; | |
be2a5f71 DJ |
602 | |
603 | /* Limit it to the size of the targets ``g'' response unless we have | |
604 | permission from the stub to use a larger packet size. */ | |
605 | if (rs->explicit_packet_size == 0 | |
606 | && rsa->actual_register_packet_size > 0 | |
607 | && what_they_get > rsa->actual_register_packet_size) | |
608 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 JM |
609 | } |
610 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
611 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
612 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
613 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
6d820c5c DJ |
614 | |
615 | /* Make sure there is room in the global buffer for this packet | |
616 | (including its trailing NUL byte). */ | |
617 | if (rs->buf_size < what_they_get + 1) | |
618 | { | |
619 | rs->buf_size = 2 * what_they_get; | |
620 | rs->buf = xrealloc (rs->buf, 2 * what_they_get); | |
621 | } | |
622 | ||
11cf8741 JM |
623 | return what_they_get; |
624 | } | |
625 | ||
626 | /* Update the size of a read/write packet. If they user wants | |
23860348 | 627 | something really big then do a sanity check. */ |
11cf8741 JM |
628 | |
629 | static void | |
630 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
631 | { | |
632 | int fixed_p = config->fixed_p; | |
633 | long size = config->size; | |
634 | if (args == NULL) | |
8a3fe4f8 | 635 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
636 | else if (strcmp (args, "hard") == 0 |
637 | || strcmp (args, "fixed") == 0) | |
638 | fixed_p = 1; | |
639 | else if (strcmp (args, "soft") == 0 | |
640 | || strcmp (args, "limit") == 0) | |
641 | fixed_p = 0; | |
642 | else | |
643 | { | |
644 | char *end; | |
645 | size = strtoul (args, &end, 0); | |
646 | if (args == end) | |
8a3fe4f8 | 647 | error (_("Invalid %s (bad syntax)."), config->name); |
11cf8741 JM |
648 | #if 0 |
649 | /* Instead of explicitly capping the size of a packet to | |
650 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
651 | instead allowed to set the size to something arbitrarily | |
23860348 | 652 | large. */ |
11cf8741 | 653 | if (size > MAX_REMOTE_PACKET_SIZE) |
8a3fe4f8 | 654 | error (_("Invalid %s (too large)."), config->name); |
11cf8741 JM |
655 | #endif |
656 | } | |
23860348 | 657 | /* Extra checks? */ |
11cf8741 JM |
658 | if (fixed_p && !config->fixed_p) |
659 | { | |
e2e0b3e5 AC |
660 | if (! query (_("The target may not be able to correctly handle a %s\n" |
661 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 662 | config->name, size)) |
8a3fe4f8 | 663 | error (_("Packet size not changed.")); |
11cf8741 | 664 | } |
23860348 | 665 | /* Update the config. */ |
11cf8741 JM |
666 | config->fixed_p = fixed_p; |
667 | config->size = size; | |
668 | } | |
669 | ||
670 | static void | |
671 | show_memory_packet_size (struct memory_packet_config *config) | |
672 | { | |
a3f17187 | 673 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 674 | if (config->fixed_p) |
a3f17187 | 675 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
676 | get_memory_packet_size (config)); |
677 | else | |
a3f17187 | 678 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
679 | get_memory_packet_size (config)); |
680 | } | |
681 | ||
682 | static struct memory_packet_config memory_write_packet_config = | |
683 | { | |
684 | "memory-write-packet-size", | |
685 | }; | |
686 | ||
687 | static void | |
688 | set_memory_write_packet_size (char *args, int from_tty) | |
689 | { | |
690 | set_memory_packet_size (args, &memory_write_packet_config); | |
691 | } | |
692 | ||
693 | static void | |
694 | show_memory_write_packet_size (char *args, int from_tty) | |
695 | { | |
696 | show_memory_packet_size (&memory_write_packet_config); | |
697 | } | |
698 | ||
699 | static long | |
700 | get_memory_write_packet_size (void) | |
701 | { | |
702 | return get_memory_packet_size (&memory_write_packet_config); | |
703 | } | |
704 | ||
705 | static struct memory_packet_config memory_read_packet_config = | |
706 | { | |
707 | "memory-read-packet-size", | |
708 | }; | |
709 | ||
710 | static void | |
711 | set_memory_read_packet_size (char *args, int from_tty) | |
712 | { | |
713 | set_memory_packet_size (args, &memory_read_packet_config); | |
714 | } | |
715 | ||
716 | static void | |
717 | show_memory_read_packet_size (char *args, int from_tty) | |
718 | { | |
719 | show_memory_packet_size (&memory_read_packet_config); | |
720 | } | |
721 | ||
722 | static long | |
723 | get_memory_read_packet_size (void) | |
724 | { | |
725 | long size = get_memory_packet_size (&memory_read_packet_config); | |
726 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an | |
727 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
728 | increased beyond this. */ |
729 | if (size > get_remote_packet_size ()) | |
730 | size = get_remote_packet_size (); | |
11cf8741 JM |
731 | return size; |
732 | } | |
733 | ||
11cf8741 | 734 | \f |
5a2468f5 JM |
735 | /* Generic configuration support for packets the stub optionally |
736 | supports. Allows the user to specify the use of the packet as well | |
23860348 | 737 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
738 | |
739 | enum packet_support | |
740 | { | |
741 | PACKET_SUPPORT_UNKNOWN = 0, | |
742 | PACKET_ENABLE, | |
743 | PACKET_DISABLE | |
744 | }; | |
745 | ||
5a2468f5 JM |
746 | struct packet_config |
747 | { | |
bb572ddd DJ |
748 | const char *name; |
749 | const char *title; | |
7f19b9a2 | 750 | enum auto_boolean detect; |
5a2468f5 JM |
751 | enum packet_support support; |
752 | }; | |
753 | ||
d471ea57 | 754 | /* Analyze a packet's return value and update the packet config |
23860348 | 755 | accordingly. */ |
d471ea57 AC |
756 | |
757 | enum packet_result | |
758 | { | |
759 | PACKET_ERROR, | |
760 | PACKET_OK, | |
761 | PACKET_UNKNOWN | |
762 | }; | |
763 | ||
5a2468f5 | 764 | static void |
d471ea57 | 765 | update_packet_config (struct packet_config *config) |
5a2468f5 | 766 | { |
d471ea57 AC |
767 | switch (config->detect) |
768 | { | |
7f19b9a2 | 769 | case AUTO_BOOLEAN_TRUE: |
d471ea57 AC |
770 | config->support = PACKET_ENABLE; |
771 | break; | |
7f19b9a2 | 772 | case AUTO_BOOLEAN_FALSE: |
d471ea57 AC |
773 | config->support = PACKET_DISABLE; |
774 | break; | |
7f19b9a2 | 775 | case AUTO_BOOLEAN_AUTO: |
d471ea57 AC |
776 | config->support = PACKET_SUPPORT_UNKNOWN; |
777 | break; | |
778 | } | |
5a2468f5 JM |
779 | } |
780 | ||
781 | static void | |
fba45db2 | 782 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
783 | { |
784 | char *support = "internal-error"; | |
785 | switch (config->support) | |
786 | { | |
787 | case PACKET_ENABLE: | |
788 | support = "enabled"; | |
789 | break; | |
790 | case PACKET_DISABLE: | |
791 | support = "disabled"; | |
792 | break; | |
793 | case PACKET_SUPPORT_UNKNOWN: | |
794 | support = "unknown"; | |
795 | break; | |
796 | } | |
797 | switch (config->detect) | |
798 | { | |
7f19b9a2 | 799 | case AUTO_BOOLEAN_AUTO: |
37a105a1 DJ |
800 | printf_filtered (_("Support for the `%s' packet is auto-detected, currently %s.\n"), |
801 | config->name, support); | |
5a2468f5 | 802 | break; |
7f19b9a2 AC |
803 | case AUTO_BOOLEAN_TRUE: |
804 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
805 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
806 | config->name, support); | |
8e248173 | 807 | break; |
5a2468f5 JM |
808 | } |
809 | } | |
810 | ||
811 | static void | |
bb572ddd DJ |
812 | add_packet_config_cmd (struct packet_config *config, const char *name, |
813 | const char *title, int legacy) | |
d471ea57 | 814 | { |
5a2468f5 JM |
815 | char *set_doc; |
816 | char *show_doc; | |
d471ea57 | 817 | char *cmd_name; |
3ed07be4 | 818 | |
5a2468f5 JM |
819 | config->name = name; |
820 | config->title = title; | |
7f19b9a2 | 821 | config->detect = AUTO_BOOLEAN_AUTO; |
8e248173 | 822 | config->support = PACKET_SUPPORT_UNKNOWN; |
b435e160 AC |
823 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
824 | name, title); | |
825 | show_doc = xstrprintf ("Show current use of remote protocol `%s' (%s) packet", | |
826 | name, title); | |
d471ea57 | 827 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 828 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 829 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
2c5b56ce | 830 | &config->detect, set_doc, show_doc, NULL, /* help_doc */ |
bb572ddd DJ |
831 | set_remote_protocol_packet_cmd, |
832 | show_remote_protocol_packet_cmd, | |
833 | &remote_set_cmdlist, &remote_show_cmdlist); | |
23860348 | 834 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
835 | if (legacy) |
836 | { | |
837 | char *legacy_name; | |
b435e160 | 838 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 839 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 840 | &remote_set_cmdlist); |
d471ea57 | 841 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 842 | &remote_show_cmdlist); |
d471ea57 | 843 | } |
5a2468f5 JM |
844 | } |
845 | ||
d471ea57 | 846 | static enum packet_result |
a76d924d | 847 | packet_check_result (const char *buf) |
5a2468f5 | 848 | { |
d471ea57 | 849 | if (buf[0] != '\0') |
5a2468f5 | 850 | { |
d471ea57 | 851 | /* The stub recognized the packet request. Check that the |
23860348 | 852 | operation succeeded. */ |
a76d924d DJ |
853 | if (buf[0] == 'E' |
854 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
855 | && buf[3] == '\0') | |
856 | /* "Enn" - definitly an error. */ | |
857 | return PACKET_ERROR; | |
858 | ||
859 | /* Always treat "E." as an error. This will be used for | |
860 | more verbose error messages, such as E.memtypes. */ | |
861 | if (buf[0] == 'E' && buf[1] == '.') | |
862 | return PACKET_ERROR; | |
863 | ||
864 | /* The packet may or may not be OK. Just assume it is. */ | |
865 | return PACKET_OK; | |
866 | } | |
867 | else | |
868 | /* The stub does not support the packet. */ | |
869 | return PACKET_UNKNOWN; | |
870 | } | |
871 | ||
872 | static enum packet_result | |
873 | packet_ok (const char *buf, struct packet_config *config) | |
874 | { | |
875 | enum packet_result result; | |
876 | ||
877 | result = packet_check_result (buf); | |
878 | switch (result) | |
879 | { | |
880 | case PACKET_OK: | |
881 | case PACKET_ERROR: | |
882 | /* The stub recognized the packet request. */ | |
d471ea57 AC |
883 | switch (config->support) |
884 | { | |
885 | case PACKET_SUPPORT_UNKNOWN: | |
886 | if (remote_debug) | |
887 | fprintf_unfiltered (gdb_stdlog, | |
888 | "Packet %s (%s) is supported\n", | |
889 | config->name, config->title); | |
890 | config->support = PACKET_ENABLE; | |
891 | break; | |
892 | case PACKET_DISABLE: | |
8e65ff28 | 893 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 894 | _("packet_ok: attempt to use a disabled packet")); |
d471ea57 AC |
895 | break; |
896 | case PACKET_ENABLE: | |
897 | break; | |
898 | } | |
a76d924d DJ |
899 | break; |
900 | case PACKET_UNKNOWN: | |
23860348 | 901 | /* The stub does not support the packet. */ |
d471ea57 AC |
902 | switch (config->support) |
903 | { | |
904 | case PACKET_ENABLE: | |
7f19b9a2 | 905 | if (config->detect == AUTO_BOOLEAN_AUTO) |
d471ea57 | 906 | /* If the stub previously indicated that the packet was |
23860348 | 907 | supported then there is a protocol error.. */ |
8a3fe4f8 | 908 | error (_("Protocol error: %s (%s) conflicting enabled responses."), |
d471ea57 AC |
909 | config->name, config->title); |
910 | else | |
23860348 | 911 | /* The user set it wrong. */ |
8a3fe4f8 | 912 | error (_("Enabled packet %s (%s) not recognized by stub"), |
d471ea57 AC |
913 | config->name, config->title); |
914 | break; | |
915 | case PACKET_SUPPORT_UNKNOWN: | |
916 | if (remote_debug) | |
917 | fprintf_unfiltered (gdb_stdlog, | |
918 | "Packet %s (%s) is NOT supported\n", | |
919 | config->name, config->title); | |
920 | config->support = PACKET_DISABLE; | |
921 | break; | |
922 | case PACKET_DISABLE: | |
923 | break; | |
924 | } | |
a76d924d | 925 | break; |
5a2468f5 | 926 | } |
a76d924d DJ |
927 | |
928 | return result; | |
5a2468f5 JM |
929 | } |
930 | ||
444abaca DJ |
931 | enum { |
932 | PACKET_vCont = 0, | |
933 | PACKET_X, | |
934 | PACKET_qSymbol, | |
935 | PACKET_P, | |
936 | PACKET_p, | |
937 | PACKET_Z0, | |
938 | PACKET_Z1, | |
939 | PACKET_Z2, | |
940 | PACKET_Z3, | |
941 | PACKET_Z4, | |
a6b151f1 DJ |
942 | PACKET_vFile_open, |
943 | PACKET_vFile_pread, | |
944 | PACKET_vFile_pwrite, | |
945 | PACKET_vFile_close, | |
946 | PACKET_vFile_unlink, | |
0876f84a | 947 | PACKET_qXfer_auxv, |
23181151 | 948 | PACKET_qXfer_features, |
cfa9d6d9 | 949 | PACKET_qXfer_libraries, |
fd79ecee | 950 | PACKET_qXfer_memory_map, |
0e7f50da UW |
951 | PACKET_qXfer_spu_read, |
952 | PACKET_qXfer_spu_write, | |
444abaca | 953 | PACKET_qGetTLSAddr, |
be2a5f71 | 954 | PACKET_qSupported, |
89be2091 | 955 | PACKET_QPassSignals, |
08388c79 | 956 | PACKET_qSearch_memory, |
2d717e4f DJ |
957 | PACKET_vAttach, |
958 | PACKET_vRun, | |
a6f3e723 | 959 | PACKET_QStartNoAckMode, |
82f73884 | 960 | PACKET_vKill, |
444abaca DJ |
961 | PACKET_MAX |
962 | }; | |
506fb367 | 963 | |
444abaca | 964 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 MS |
965 | |
966 | static void | |
444abaca DJ |
967 | set_remote_protocol_packet_cmd (char *args, int from_tty, |
968 | struct cmd_list_element *c) | |
dc8acb97 | 969 | { |
444abaca | 970 | struct packet_config *packet; |
dc8acb97 | 971 | |
444abaca DJ |
972 | for (packet = remote_protocol_packets; |
973 | packet < &remote_protocol_packets[PACKET_MAX]; | |
974 | packet++) | |
975 | { | |
976 | if (&packet->detect == c->var) | |
977 | { | |
978 | update_packet_config (packet); | |
979 | return; | |
980 | } | |
981 | } | |
982 | internal_error (__FILE__, __LINE__, "Could not find config for %s", | |
983 | c->name); | |
dc8acb97 MS |
984 | } |
985 | ||
5a2468f5 | 986 | static void |
444abaca DJ |
987 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
988 | struct cmd_list_element *c, | |
989 | const char *value) | |
5a2468f5 | 990 | { |
444abaca | 991 | struct packet_config *packet; |
5a2468f5 | 992 | |
444abaca DJ |
993 | for (packet = remote_protocol_packets; |
994 | packet < &remote_protocol_packets[PACKET_MAX]; | |
995 | packet++) | |
996 | { | |
997 | if (&packet->detect == c->var) | |
998 | { | |
999 | show_packet_config_cmd (packet); | |
1000 | return; | |
1001 | } | |
1002 | } | |
1003 | internal_error (__FILE__, __LINE__, "Could not find config for %s", | |
1004 | c->name); | |
5a2468f5 JM |
1005 | } |
1006 | ||
d471ea57 AC |
1007 | /* Should we try one of the 'Z' requests? */ |
1008 | ||
1009 | enum Z_packet_type | |
1010 | { | |
1011 | Z_PACKET_SOFTWARE_BP, | |
1012 | Z_PACKET_HARDWARE_BP, | |
1013 | Z_PACKET_WRITE_WP, | |
1014 | Z_PACKET_READ_WP, | |
1015 | Z_PACKET_ACCESS_WP, | |
1016 | NR_Z_PACKET_TYPES | |
1017 | }; | |
96baa820 | 1018 | |
d471ea57 | 1019 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 1020 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 1021 | |
7f19b9a2 | 1022 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
1023 | |
1024 | static void | |
fba45db2 KB |
1025 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
1026 | struct cmd_list_element *c) | |
96baa820 | 1027 | { |
d471ea57 AC |
1028 | int i; |
1029 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
1030 | { | |
444abaca DJ |
1031 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
1032 | update_packet_config (&remote_protocol_packets[PACKET_Z0 + i]); | |
d471ea57 | 1033 | } |
96baa820 JM |
1034 | } |
1035 | ||
1036 | static void | |
08546159 AC |
1037 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
1038 | struct cmd_list_element *c, | |
1039 | const char *value) | |
96baa820 | 1040 | { |
d471ea57 AC |
1041 | int i; |
1042 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
1043 | { | |
444abaca | 1044 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 1045 | } |
96baa820 JM |
1046 | } |
1047 | ||
9d1f7ab2 MS |
1048 | /* Should we try the 'ThreadInfo' query packet? |
1049 | ||
1050 | This variable (NOT available to the user: auto-detect only!) | |
1051 | determines whether GDB will use the new, simpler "ThreadInfo" | |
1052 | query or the older, more complex syntax for thread queries. | |
802188a7 | 1053 | This is an auto-detect variable (set to true at each connect, |
9d1f7ab2 MS |
1054 | and set to false when the target fails to recognize it). */ |
1055 | ||
1056 | static int use_threadinfo_query; | |
1057 | static int use_threadextra_query; | |
1058 | ||
23860348 | 1059 | /* Tokens for use by the asynchronous signal handlers for SIGINT. */ |
d5d6fca5 DJ |
1060 | static struct async_signal_handler *sigint_remote_twice_token; |
1061 | static struct async_signal_handler *sigint_remote_token; | |
43ff13b4 | 1062 | |
c906108c SS |
1063 | \f |
1064 | ||
79d7f229 PA |
1065 | static ptid_t magic_null_ptid; |
1066 | static ptid_t not_sent_ptid; | |
1067 | static ptid_t any_thread_ptid; | |
1068 | ||
1069 | /* These are the threads which we last sent to the remote system. The | |
1070 | TID member will be -1 for all or -2 for not sent yet. */ | |
1071 | ||
1072 | static ptid_t general_thread; | |
1073 | static ptid_t continue_thread; | |
c5aa993b | 1074 | |
c906108c SS |
1075 | |
1076 | /* Call this function as a result of | |
1077 | 1) A halt indication (T packet) containing a thread id | |
1078 | 2) A direct query of currthread | |
1079 | 3) Successful execution of set thread | |
1080 | */ | |
1081 | ||
1082 | static void | |
79d7f229 | 1083 | record_currthread (ptid_t currthread) |
c906108c | 1084 | { |
c906108c | 1085 | general_thread = currthread; |
cce74817 | 1086 | |
c906108c SS |
1087 | /* If this is a new thread, add it to GDB's thread list. |
1088 | If we leave it up to WFI to do this, bad things will happen. */ | |
82f73884 PA |
1089 | |
1090 | if (in_thread_list (currthread) && is_exited (currthread)) | |
1091 | { | |
1092 | /* We're seeing an event on a thread id we knew had exited. | |
1093 | This has to be a new thread reusing the old id. Add it. */ | |
1094 | add_thread (currthread); | |
1095 | return; | |
1096 | } | |
1097 | ||
79d7f229 | 1098 | if (!in_thread_list (currthread)) |
c0a2216e PA |
1099 | { |
1100 | if (ptid_equal (pid_to_ptid (ptid_get_pid (currthread)), inferior_ptid)) | |
1101 | { | |
1102 | /* inferior_ptid has no thread member yet. This can happen | |
1103 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
1104 | stub doesn't support qC. This is the first stop reported | |
1105 | after an attach, so this is the main thread. Update the | |
1106 | ptid in the thread list. */ | |
82f73884 PA |
1107 | thread_change_ptid (inferior_ptid, currthread); |
1108 | return; | |
c0a2216e | 1109 | } |
82f73884 PA |
1110 | |
1111 | if (ptid_equal (magic_null_ptid, inferior_ptid)) | |
c0a2216e PA |
1112 | { |
1113 | /* inferior_ptid is not set yet. This can happen with the | |
1114 | vRun -> remote_wait,"TAAthread:" path if the stub | |
1115 | doesn't support qC. This is the first stop reported | |
1116 | after an attach, so this is the main thread. Update the | |
1117 | ptid in the thread list. */ | |
82f73884 PA |
1118 | thread_change_ptid (inferior_ptid, currthread); |
1119 | return; | |
c0a2216e | 1120 | } |
82f73884 PA |
1121 | |
1122 | /* This is really a new thread. Add it. */ | |
1123 | add_thread (currthread); | |
c0a2216e | 1124 | } |
82f73884 PA |
1125 | |
1126 | if (!in_inferior_list (ptid_get_pid (currthread))) | |
1127 | /* When connecting to a target remote, or to a target | |
1128 | extended-remote which already was debugging an inferior, we may | |
1129 | not know about it yet --- add it. */ | |
1130 | add_inferior (ptid_get_pid (currthread)); | |
c906108c SS |
1131 | } |
1132 | ||
89be2091 DJ |
1133 | static char *last_pass_packet; |
1134 | ||
1135 | /* If 'QPassSignals' is supported, tell the remote stub what signals | |
1136 | it can simply pass through to the inferior without reporting. */ | |
1137 | ||
1138 | static void | |
1139 | remote_pass_signals (void) | |
1140 | { | |
1141 | if (remote_protocol_packets[PACKET_QPassSignals].support != PACKET_DISABLE) | |
1142 | { | |
1143 | char *pass_packet, *p; | |
1144 | int numsigs = (int) TARGET_SIGNAL_LAST; | |
1145 | int count = 0, i; | |
1146 | ||
1147 | gdb_assert (numsigs < 256); | |
1148 | for (i = 0; i < numsigs; i++) | |
1149 | { | |
1150 | if (signal_stop_state (i) == 0 | |
1151 | && signal_print_state (i) == 0 | |
1152 | && signal_pass_state (i) == 1) | |
1153 | count++; | |
1154 | } | |
1155 | pass_packet = xmalloc (count * 3 + strlen ("QPassSignals:") + 1); | |
1156 | strcpy (pass_packet, "QPassSignals:"); | |
1157 | p = pass_packet + strlen (pass_packet); | |
1158 | for (i = 0; i < numsigs; i++) | |
1159 | { | |
1160 | if (signal_stop_state (i) == 0 | |
1161 | && signal_print_state (i) == 0 | |
1162 | && signal_pass_state (i) == 1) | |
1163 | { | |
1164 | if (i >= 16) | |
1165 | *p++ = tohex (i >> 4); | |
1166 | *p++ = tohex (i & 15); | |
1167 | if (count) | |
1168 | *p++ = ';'; | |
1169 | else | |
1170 | break; | |
1171 | count--; | |
1172 | } | |
1173 | } | |
1174 | *p = 0; | |
1175 | if (!last_pass_packet || strcmp (last_pass_packet, pass_packet)) | |
1176 | { | |
1177 | struct remote_state *rs = get_remote_state (); | |
1178 | char *buf = rs->buf; | |
1179 | ||
1180 | putpkt (pass_packet); | |
1181 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1182 | packet_ok (buf, &remote_protocol_packets[PACKET_QPassSignals]); | |
1183 | if (last_pass_packet) | |
1184 | xfree (last_pass_packet); | |
1185 | last_pass_packet = pass_packet; | |
1186 | } | |
1187 | else | |
1188 | xfree (pass_packet); | |
1189 | } | |
1190 | } | |
1191 | ||
79d7f229 PA |
1192 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
1193 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
1194 | thread. If GEN is set, set the general thread, if not, then set | |
1195 | the step/continue thread. */ | |
c906108c | 1196 | static void |
79d7f229 | 1197 | set_thread (struct ptid ptid, int gen) |
c906108c | 1198 | { |
d01949b6 | 1199 | struct remote_state *rs = get_remote_state (); |
79d7f229 | 1200 | ptid_t state = gen ? general_thread : continue_thread; |
6d820c5c | 1201 | char *buf = rs->buf; |
79d7f229 | 1202 | char *endbuf = rs->buf + get_remote_packet_size (); |
c906108c | 1203 | |
79d7f229 | 1204 | if (ptid_equal (state, ptid)) |
c906108c SS |
1205 | return; |
1206 | ||
79d7f229 PA |
1207 | *buf++ = 'H'; |
1208 | *buf++ = gen ? 'g' : 'c'; | |
1209 | if (ptid_equal (ptid, magic_null_ptid)) | |
1210 | xsnprintf (buf, endbuf - buf, "0"); | |
1211 | else if (ptid_equal (ptid, any_thread_ptid)) | |
1212 | xsnprintf (buf, endbuf - buf, "0"); | |
1213 | else if (ptid_equal (ptid, minus_one_ptid)) | |
1214 | xsnprintf (buf, endbuf - buf, "-1"); | |
1215 | else | |
82f73884 | 1216 | write_ptid (buf, endbuf, ptid); |
79d7f229 | 1217 | putpkt (rs->buf); |
6d820c5c | 1218 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 1219 | if (gen) |
79d7f229 | 1220 | general_thread = ptid; |
c906108c | 1221 | else |
79d7f229 | 1222 | continue_thread = ptid; |
c906108c | 1223 | } |
79d7f229 PA |
1224 | |
1225 | static void | |
1226 | set_general_thread (struct ptid ptid) | |
1227 | { | |
1228 | set_thread (ptid, 1); | |
1229 | } | |
1230 | ||
1231 | static void | |
1232 | set_continue_thread (struct ptid ptid) | |
1233 | { | |
1234 | set_thread (ptid, 0); | |
1235 | } | |
1236 | ||
c906108c | 1237 | \f |
79d7f229 PA |
1238 | /* Return nonzero if the thread PTID is still alive on the remote |
1239 | system. */ | |
c906108c SS |
1240 | |
1241 | static int | |
39f77062 | 1242 | remote_thread_alive (ptid_t ptid) |
c906108c | 1243 | { |
6d820c5c | 1244 | struct remote_state *rs = get_remote_state (); |
79d7f229 | 1245 | int tid = ptid_get_tid (ptid); |
82f73884 | 1246 | char *p, *endp; |
c906108c | 1247 | |
c0a2216e PA |
1248 | if (ptid_equal (ptid, magic_null_ptid)) |
1249 | /* The main thread is always alive. */ | |
1250 | return 1; | |
1251 | ||
1252 | if (ptid_get_pid (ptid) != 0 && ptid_get_tid (ptid) == 0) | |
1253 | /* The main thread is always alive. This can happen after a | |
1254 | vAttach, if the remote side doesn't support | |
1255 | multi-threading. */ | |
1256 | return 1; | |
1257 | ||
82f73884 PA |
1258 | p = rs->buf; |
1259 | endp = rs->buf + get_remote_packet_size (); | |
1260 | ||
1261 | *p++ = 'T'; | |
1262 | write_ptid (p, endp, ptid); | |
1263 | ||
2e9f7625 | 1264 | putpkt (rs->buf); |
6d820c5c | 1265 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1266 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
1267 | } |
1268 | ||
1269 | /* About these extended threadlist and threadinfo packets. They are | |
1270 | variable length packets but, the fields within them are often fixed | |
1271 | length. They are redundent enough to send over UDP as is the | |
1272 | remote protocol in general. There is a matching unit test module | |
1273 | in libstub. */ | |
1274 | ||
cce74817 JM |
1275 | #define OPAQUETHREADBYTES 8 |
1276 | ||
1277 | /* a 64 bit opaque identifier */ | |
1278 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
1279 | ||
23860348 MS |
1280 | /* WARNING: This threadref data structure comes from the remote O.S., |
1281 | libstub protocol encoding, and remote.c. it is not particularly | |
1282 | changable. */ | |
cce74817 JM |
1283 | |
1284 | /* Right now, the internal structure is int. We want it to be bigger. | |
1285 | Plan to fix this. | |
c5aa993b | 1286 | */ |
cce74817 | 1287 | |
23860348 | 1288 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 1289 | |
9d1f7ab2 | 1290 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 1291 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
1292 | |
1293 | struct gdb_ext_thread_info | |
c5aa993b | 1294 | { |
23860348 | 1295 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 1296 | int active; /* Has state interesting to GDB? |
23860348 | 1297 | regs, stack. */ |
2bc416ba | 1298 | char display[256]; /* Brief state display, name, |
cedea757 | 1299 | blocked/suspended. */ |
23860348 | 1300 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 1301 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 1302 | whatever. */ |
c5aa993b | 1303 | }; |
cce74817 JM |
1304 | |
1305 | /* The volume of remote transfers can be limited by submitting | |
1306 | a mask containing bits specifying the desired information. | |
1307 | Use a union of these values as the 'selection' parameter to | |
1308 | get_thread_info. FIXME: Make these TAG names more thread specific. | |
c5aa993b | 1309 | */ |
cce74817 JM |
1310 | |
1311 | #define TAG_THREADID 1 | |
1312 | #define TAG_EXISTS 2 | |
1313 | #define TAG_DISPLAY 4 | |
1314 | #define TAG_THREADNAME 8 | |
c5aa993b | 1315 | #define TAG_MOREDISPLAY 16 |
cce74817 | 1316 | |
23860348 | 1317 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 1318 | |
b2dd6311 | 1319 | char *unpack_varlen_hex (char *buff, ULONGEST *result); |
cce74817 | 1320 | |
a14ed312 | 1321 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 1322 | |
a14ed312 | 1323 | static char *pack_nibble (char *buf, int nibble); |
cce74817 | 1324 | |
23860348 | 1325 | static char *pack_hex_byte (char *pkt, int /* unsigned char */ byte); |
cce74817 | 1326 | |
a14ed312 | 1327 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 1328 | |
a14ed312 | 1329 | static char *pack_int (char *buf, int value); |
cce74817 | 1330 | |
a14ed312 | 1331 | static char *unpack_int (char *buf, int *value); |
cce74817 | 1332 | |
a14ed312 | 1333 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 1334 | |
23860348 | 1335 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 1336 | |
23860348 | 1337 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 1338 | |
23860348 | 1339 | void int_to_threadref (threadref *id, int value); |
cce74817 | 1340 | |
23860348 | 1341 | static int threadref_to_int (threadref *ref); |
cce74817 | 1342 | |
23860348 | 1343 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 1344 | |
23860348 | 1345 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 1346 | |
2bc416ba | 1347 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 1348 | threadref *id); |
cce74817 | 1349 | |
a14ed312 | 1350 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 1351 | threadref *expectedref, |
a14ed312 KB |
1352 | struct gdb_ext_thread_info |
1353 | *info); | |
cce74817 JM |
1354 | |
1355 | ||
2bc416ba | 1356 | static int remote_get_threadinfo (threadref *threadid, |
23860348 | 1357 | int fieldset, /*TAG mask */ |
a14ed312 | 1358 | struct gdb_ext_thread_info *info); |
cce74817 | 1359 | |
a14ed312 KB |
1360 | static char *pack_threadlist_request (char *pkt, int startflag, |
1361 | int threadcount, | |
23860348 | 1362 | threadref *nextthread); |
cce74817 | 1363 | |
a14ed312 KB |
1364 | static int parse_threadlist_response (char *pkt, |
1365 | int result_limit, | |
23860348 | 1366 | threadref *original_echo, |
2bc416ba | 1367 | threadref *resultlist, |
23860348 | 1368 | int *doneflag); |
cce74817 | 1369 | |
a14ed312 | 1370 | static int remote_get_threadlist (int startflag, |
23860348 | 1371 | threadref *nextthread, |
a14ed312 KB |
1372 | int result_limit, |
1373 | int *done, | |
2bc416ba | 1374 | int *result_count, |
23860348 | 1375 | threadref *threadlist); |
cce74817 | 1376 | |
23860348 | 1377 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 1378 | |
a14ed312 KB |
1379 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
1380 | void *context, int looplimit); | |
cce74817 | 1381 | |
23860348 | 1382 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 1383 | |
82f73884 PA |
1384 | |
1385 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
1386 | buffer we're allowed to write to. Returns | |
1387 | BUF+CHARACTERS_WRITTEN. */ | |
1388 | ||
1389 | static char * | |
1390 | write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
1391 | { | |
1392 | int pid, tid; | |
1393 | struct remote_state *rs = get_remote_state (); | |
1394 | ||
1395 | if (remote_multi_process_p (rs)) | |
1396 | { | |
1397 | pid = ptid_get_pid (ptid); | |
1398 | if (pid < 0) | |
1399 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
1400 | else | |
1401 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
1402 | } | |
1403 | tid = ptid_get_tid (ptid); | |
1404 | if (tid < 0) | |
1405 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
1406 | else | |
1407 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
1408 | ||
1409 | return buf; | |
1410 | } | |
1411 | ||
1412 | /* Extract a PTID from BUF. If non-null, OBUF is set to the to one | |
1413 | passed the last parsed char. Returns null_ptid on error. */ | |
1414 | ||
1415 | static ptid_t | |
1416 | read_ptid (char *buf, char **obuf) | |
1417 | { | |
1418 | char *p = buf; | |
1419 | char *pp; | |
1420 | ULONGEST pid = 0, tid = 0; | |
1421 | ptid_t ptid; | |
1422 | ||
1423 | if (*p == 'p') | |
1424 | { | |
1425 | /* Multi-process ptid. */ | |
1426 | pp = unpack_varlen_hex (p + 1, &pid); | |
1427 | if (*pp != '.') | |
1428 | error (_("invalid remote ptid: %s\n"), p); | |
1429 | ||
1430 | p = pp; | |
1431 | pp = unpack_varlen_hex (p + 1, &tid); | |
1432 | if (obuf) | |
1433 | *obuf = pp; | |
1434 | return ptid_build (pid, 0, tid); | |
1435 | } | |
1436 | ||
1437 | /* No multi-process. Just a tid. */ | |
1438 | pp = unpack_varlen_hex (p, &tid); | |
1439 | ||
1440 | /* Since the stub is not sending a process id, then default to | |
1441 | what's in inferior_ptid. */ | |
1442 | pid = ptid_get_pid (inferior_ptid); | |
1443 | ||
1444 | if (obuf) | |
1445 | *obuf = pp; | |
1446 | return ptid_build (pid, 0, tid); | |
1447 | } | |
1448 | ||
23860348 | 1449 | /* Encode 64 bits in 16 chars of hex. */ |
c906108c SS |
1450 | |
1451 | static const char hexchars[] = "0123456789abcdef"; | |
1452 | ||
1453 | static int | |
fba45db2 | 1454 | ishex (int ch, int *val) |
c906108c SS |
1455 | { |
1456 | if ((ch >= 'a') && (ch <= 'f')) | |
1457 | { | |
1458 | *val = ch - 'a' + 10; | |
1459 | return 1; | |
1460 | } | |
1461 | if ((ch >= 'A') && (ch <= 'F')) | |
1462 | { | |
1463 | *val = ch - 'A' + 10; | |
1464 | return 1; | |
1465 | } | |
1466 | if ((ch >= '0') && (ch <= '9')) | |
1467 | { | |
1468 | *val = ch - '0'; | |
1469 | return 1; | |
1470 | } | |
1471 | return 0; | |
1472 | } | |
1473 | ||
1474 | static int | |
fba45db2 | 1475 | stubhex (int ch) |
c906108c SS |
1476 | { |
1477 | if (ch >= 'a' && ch <= 'f') | |
1478 | return ch - 'a' + 10; | |
1479 | if (ch >= '0' && ch <= '9') | |
1480 | return ch - '0'; | |
1481 | if (ch >= 'A' && ch <= 'F') | |
1482 | return ch - 'A' + 10; | |
1483 | return -1; | |
1484 | } | |
1485 | ||
1486 | static int | |
fba45db2 | 1487 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
1488 | { |
1489 | int nibble; | |
1490 | int retval = 0; | |
1491 | ||
1492 | while (fieldlength) | |
1493 | { | |
1494 | nibble = stubhex (*buff++); | |
1495 | retval |= nibble; | |
1496 | fieldlength--; | |
1497 | if (fieldlength) | |
1498 | retval = retval << 4; | |
1499 | } | |
1500 | return retval; | |
1501 | } | |
1502 | ||
1503 | char * | |
fba45db2 | 1504 | unpack_varlen_hex (char *buff, /* packet to parse */ |
b2dd6311 | 1505 | ULONGEST *result) |
c906108c SS |
1506 | { |
1507 | int nibble; | |
d49c44d5 | 1508 | ULONGEST retval = 0; |
c906108c SS |
1509 | |
1510 | while (ishex (*buff, &nibble)) | |
1511 | { | |
1512 | buff++; | |
1513 | retval = retval << 4; | |
1514 | retval |= nibble & 0x0f; | |
1515 | } | |
1516 | *result = retval; | |
1517 | return buff; | |
1518 | } | |
1519 | ||
1520 | static char * | |
fba45db2 | 1521 | unpack_nibble (char *buf, int *val) |
c906108c | 1522 | { |
b7589f7d | 1523 | *val = fromhex (*buf++); |
c906108c SS |
1524 | return buf; |
1525 | } | |
1526 | ||
1527 | static char * | |
fba45db2 | 1528 | pack_nibble (char *buf, int nibble) |
c906108c SS |
1529 | { |
1530 | *buf++ = hexchars[(nibble & 0x0f)]; | |
1531 | return buf; | |
1532 | } | |
1533 | ||
1534 | static char * | |
fba45db2 | 1535 | pack_hex_byte (char *pkt, int byte) |
c906108c SS |
1536 | { |
1537 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
1538 | *pkt++ = hexchars[(byte & 0xf)]; | |
1539 | return pkt; | |
1540 | } | |
1541 | ||
1542 | static char * | |
fba45db2 | 1543 | unpack_byte (char *buf, int *value) |
c906108c SS |
1544 | { |
1545 | *value = stub_unpack_int (buf, 2); | |
1546 | return buf + 2; | |
1547 | } | |
1548 | ||
1549 | static char * | |
fba45db2 | 1550 | pack_int (char *buf, int value) |
c906108c SS |
1551 | { |
1552 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
1553 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
1554 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
1555 | buf = pack_hex_byte (buf, (value & 0xff)); | |
1556 | return buf; | |
1557 | } | |
1558 | ||
1559 | static char * | |
fba45db2 | 1560 | unpack_int (char *buf, int *value) |
c906108c SS |
1561 | { |
1562 | *value = stub_unpack_int (buf, 8); | |
1563 | return buf + 8; | |
1564 | } | |
1565 | ||
23860348 | 1566 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 1567 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
1568 | |
1569 | static char * | |
fba45db2 | 1570 | pack_string (char *pkt, char *string) |
c906108c SS |
1571 | { |
1572 | char ch; | |
1573 | int len; | |
1574 | ||
1575 | len = strlen (string); | |
1576 | if (len > 200) | |
23860348 | 1577 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
1578 | pkt = pack_hex_byte (pkt, len); |
1579 | while (len-- > 0) | |
1580 | { | |
1581 | ch = *string++; | |
1582 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 1583 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
1584 | *pkt++ = ch; |
1585 | } | |
1586 | return pkt; | |
1587 | } | |
1588 | #endif /* 0 (unused) */ | |
1589 | ||
1590 | static char * | |
fba45db2 | 1591 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
1592 | { |
1593 | while (length--) | |
1594 | *dest++ = *src++; | |
1595 | *dest = '\0'; | |
1596 | return src; | |
1597 | } | |
1598 | ||
1599 | static char * | |
fba45db2 | 1600 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
1601 | { |
1602 | char *limit; | |
1603 | unsigned char *altid; | |
1604 | ||
1605 | altid = (unsigned char *) id; | |
1606 | limit = pkt + BUF_THREAD_ID_SIZE; | |
1607 | while (pkt < limit) | |
1608 | pkt = pack_hex_byte (pkt, *altid++); | |
1609 | return pkt; | |
1610 | } | |
1611 | ||
1612 | ||
1613 | static char * | |
fba45db2 | 1614 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
1615 | { |
1616 | char *altref; | |
1617 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
1618 | int x, y; | |
1619 | ||
1620 | altref = (char *) id; | |
1621 | ||
1622 | while (inbuf < limit) | |
1623 | { | |
1624 | x = stubhex (*inbuf++); | |
1625 | y = stubhex (*inbuf++); | |
1626 | *altref++ = (x << 4) | y; | |
1627 | } | |
1628 | return inbuf; | |
1629 | } | |
1630 | ||
1631 | /* Externally, threadrefs are 64 bits but internally, they are still | |
1632 | ints. This is due to a mismatch of specifications. We would like | |
1633 | to use 64bit thread references internally. This is an adapter | |
1634 | function. */ | |
1635 | ||
1636 | void | |
fba45db2 | 1637 | int_to_threadref (threadref *id, int value) |
c906108c SS |
1638 | { |
1639 | unsigned char *scan; | |
1640 | ||
1641 | scan = (unsigned char *) id; | |
1642 | { | |
1643 | int i = 4; | |
1644 | while (i--) | |
1645 | *scan++ = 0; | |
1646 | } | |
1647 | *scan++ = (value >> 24) & 0xff; | |
1648 | *scan++ = (value >> 16) & 0xff; | |
1649 | *scan++ = (value >> 8) & 0xff; | |
1650 | *scan++ = (value & 0xff); | |
1651 | } | |
1652 | ||
1653 | static int | |
fba45db2 | 1654 | threadref_to_int (threadref *ref) |
c906108c SS |
1655 | { |
1656 | int i, value = 0; | |
1657 | unsigned char *scan; | |
1658 | ||
cfd77fa1 | 1659 | scan = *ref; |
c906108c SS |
1660 | scan += 4; |
1661 | i = 4; | |
1662 | while (i-- > 0) | |
1663 | value = (value << 8) | ((*scan++) & 0xff); | |
1664 | return value; | |
1665 | } | |
1666 | ||
1667 | static void | |
fba45db2 | 1668 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
1669 | { |
1670 | int i; | |
1671 | unsigned char *csrc, *cdest; | |
1672 | ||
1673 | csrc = (unsigned char *) src; | |
1674 | cdest = (unsigned char *) dest; | |
1675 | i = 8; | |
1676 | while (i--) | |
1677 | *cdest++ = *csrc++; | |
1678 | } | |
1679 | ||
1680 | static int | |
fba45db2 | 1681 | threadmatch (threadref *dest, threadref *src) |
c906108c | 1682 | { |
23860348 | 1683 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
1684 | #if 0 |
1685 | unsigned char *srcp, *destp; | |
1686 | int i, result; | |
1687 | srcp = (char *) src; | |
1688 | destp = (char *) dest; | |
1689 | ||
1690 | result = 1; | |
1691 | while (i-- > 0) | |
1692 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
1693 | return result; | |
1694 | #endif | |
1695 | return 1; | |
1696 | } | |
1697 | ||
1698 | /* | |
c5aa993b JM |
1699 | threadid:1, # always request threadid |
1700 | context_exists:2, | |
1701 | display:4, | |
1702 | unique_name:8, | |
1703 | more_display:16 | |
1704 | */ | |
c906108c SS |
1705 | |
1706 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
1707 | ||
1708 | static char * | |
fba45db2 | 1709 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 1710 | { |
23860348 MS |
1711 | *pkt++ = 'q'; /* Info Query */ |
1712 | *pkt++ = 'P'; /* process or thread info */ | |
1713 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 1714 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 1715 | *pkt = '\0'; /* terminate */ |
c906108c SS |
1716 | return pkt; |
1717 | } | |
1718 | ||
23860348 | 1719 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 1720 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 1721 | add more fields as time goes by. */ |
c906108c | 1722 | |
23860348 | 1723 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 1724 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 1725 | fetch registers and its stack? */ |
c5aa993b | 1726 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 1727 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 1728 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 1729 | the process. */ |
c906108c SS |
1730 | |
1731 | static int | |
fba45db2 KB |
1732 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
1733 | struct gdb_ext_thread_info *info) | |
c906108c | 1734 | { |
d01949b6 | 1735 | struct remote_state *rs = get_remote_state (); |
c906108c | 1736 | int mask, length; |
cfd77fa1 | 1737 | int tag; |
c906108c | 1738 | threadref ref; |
6d820c5c | 1739 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
1740 | int retval = 1; |
1741 | ||
23860348 | 1742 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
1743 | info->active = 0; |
1744 | info->display[0] = '\0'; | |
1745 | info->shortname[0] = '\0'; | |
1746 | info->more_display[0] = '\0'; | |
1747 | ||
23860348 MS |
1748 | /* Assume the characters indicating the packet type have been |
1749 | stripped. */ | |
c906108c SS |
1750 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
1751 | pkt = unpack_threadid (pkt, &ref); | |
1752 | ||
1753 | if (mask == 0) | |
8a3fe4f8 | 1754 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 1755 | if (!threadmatch (&ref, expectedref)) |
23860348 | 1756 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 1757 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
1758 | return 0; |
1759 | } | |
1760 | copy_threadref (&info->threadid, &ref); | |
1761 | ||
23860348 | 1762 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 1763 | |
23860348 MS |
1764 | /* Packets are terminated with nulls. */ |
1765 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
1766 | { |
1767 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
1768 | pkt = unpack_byte (pkt, &length); /* length */ |
1769 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 1770 | { |
8a3fe4f8 | 1771 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
1772 | retval = 0; |
1773 | break; | |
1774 | } | |
1775 | if (tag == TAG_THREADID) | |
1776 | { | |
1777 | if (length != 16) | |
1778 | { | |
8a3fe4f8 | 1779 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
1780 | retval = 0; |
1781 | break; | |
1782 | } | |
1783 | pkt = unpack_threadid (pkt, &ref); | |
1784 | mask = mask & ~TAG_THREADID; | |
1785 | continue; | |
1786 | } | |
1787 | if (tag == TAG_EXISTS) | |
1788 | { | |
1789 | info->active = stub_unpack_int (pkt, length); | |
1790 | pkt += length; | |
1791 | mask = mask & ~(TAG_EXISTS); | |
1792 | if (length > 8) | |
1793 | { | |
8a3fe4f8 | 1794 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
1795 | retval = 0; |
1796 | break; | |
1797 | } | |
1798 | continue; | |
1799 | } | |
1800 | if (tag == TAG_THREADNAME) | |
1801 | { | |
1802 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
1803 | mask = mask & ~TAG_THREADNAME; | |
1804 | continue; | |
1805 | } | |
1806 | if (tag == TAG_DISPLAY) | |
1807 | { | |
1808 | pkt = unpack_string (pkt, &info->display[0], length); | |
1809 | mask = mask & ~TAG_DISPLAY; | |
1810 | continue; | |
1811 | } | |
1812 | if (tag == TAG_MOREDISPLAY) | |
1813 | { | |
1814 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
1815 | mask = mask & ~TAG_MOREDISPLAY; | |
1816 | continue; | |
1817 | } | |
8a3fe4f8 | 1818 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 1819 | break; /* Not a tag we know about. */ |
c906108c SS |
1820 | } |
1821 | return retval; | |
1822 | } | |
1823 | ||
1824 | static int | |
fba45db2 KB |
1825 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
1826 | struct gdb_ext_thread_info *info) | |
c906108c | 1827 | { |
d01949b6 | 1828 | struct remote_state *rs = get_remote_state (); |
c906108c | 1829 | int result; |
c906108c | 1830 | |
2e9f7625 DJ |
1831 | pack_threadinfo_request (rs->buf, fieldset, threadid); |
1832 | putpkt (rs->buf); | |
6d820c5c | 1833 | getpkt (&rs->buf, &rs->buf_size, 0); |
3084dd77 PA |
1834 | |
1835 | if (rs->buf[0] == '\0') | |
1836 | return 0; | |
1837 | ||
2e9f7625 | 1838 | result = remote_unpack_thread_info_response (rs->buf + 2, |
23860348 | 1839 | threadid, info); |
c906108c SS |
1840 | return result; |
1841 | } | |
1842 | ||
c906108c SS |
1843 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
1844 | ||
1845 | static char * | |
fba45db2 KB |
1846 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
1847 | threadref *nextthread) | |
c906108c SS |
1848 | { |
1849 | *pkt++ = 'q'; /* info query packet */ | |
1850 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 1851 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
1852 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
1853 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
1854 | *pkt = '\0'; | |
1855 | return pkt; | |
1856 | } | |
1857 | ||
1858 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
1859 | ||
1860 | static int | |
fba45db2 KB |
1861 | parse_threadlist_response (char *pkt, int result_limit, |
1862 | threadref *original_echo, threadref *resultlist, | |
1863 | int *doneflag) | |
c906108c | 1864 | { |
d01949b6 | 1865 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1866 | char *limit; |
1867 | int count, resultcount, done; | |
1868 | ||
1869 | resultcount = 0; | |
1870 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 1871 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 1872 | /* done parse past here */ |
c906108c SS |
1873 | pkt = unpack_byte (pkt, &count); /* count field */ |
1874 | pkt = unpack_nibble (pkt, &done); | |
1875 | /* The first threadid is the argument threadid. */ | |
1876 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
1877 | while ((count-- > 0) && (pkt < limit)) | |
1878 | { | |
1879 | pkt = unpack_threadid (pkt, resultlist++); | |
1880 | if (resultcount++ >= result_limit) | |
1881 | break; | |
1882 | } | |
1883 | if (doneflag) | |
1884 | *doneflag = done; | |
1885 | return resultcount; | |
1886 | } | |
1887 | ||
1888 | static int | |
fba45db2 KB |
1889 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
1890 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 1891 | { |
d01949b6 | 1892 | struct remote_state *rs = get_remote_state (); |
c906108c | 1893 | static threadref echo_nextthread; |
c906108c SS |
1894 | int result = 1; |
1895 | ||
23860348 | 1896 | /* Trancate result limit to be smaller than the packet size. */ |
ea9c271d DJ |
1897 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) >= get_remote_packet_size ()) |
1898 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; | |
c906108c | 1899 | |
6d820c5c DJ |
1900 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
1901 | putpkt (rs->buf); | |
1902 | getpkt (&rs->buf, &rs->buf_size, 0); | |
c906108c | 1903 | |
d8f2712d VP |
1904 | if (*rs->buf == '\0') |
1905 | *result_count = 0; | |
1906 | else | |
1907 | *result_count = | |
1908 | parse_threadlist_response (rs->buf + 2, result_limit, &echo_nextthread, | |
1909 | threadlist, done); | |
c906108c SS |
1910 | |
1911 | if (!threadmatch (&echo_nextthread, nextthread)) | |
1912 | { | |
23860348 MS |
1913 | /* FIXME: This is a good reason to drop the packet. */ |
1914 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
1915 | /* Possabilities : |
1916 | retransmit immediatly - race conditions | |
1917 | retransmit after timeout - yes | |
1918 | exit | |
1919 | wait for packet, then exit | |
1920 | */ | |
8a3fe4f8 | 1921 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 1922 | return 0; /* I choose simply exiting. */ |
c906108c SS |
1923 | } |
1924 | if (*result_count <= 0) | |
1925 | { | |
1926 | if (*done != 1) | |
1927 | { | |
8a3fe4f8 | 1928 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
1929 | result = 0; |
1930 | } | |
1931 | return result; /* break; */ | |
1932 | } | |
1933 | if (*result_count > result_limit) | |
1934 | { | |
1935 | *result_count = 0; | |
8a3fe4f8 | 1936 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
1937 | return 0; |
1938 | } | |
1939 | return result; | |
1940 | } | |
1941 | ||
23860348 MS |
1942 | /* This is the interface between remote and threads, remotes upper |
1943 | interface. */ | |
c906108c SS |
1944 | |
1945 | /* remote_find_new_threads retrieves the thread list and for each | |
1946 | thread in the list, looks up the thread in GDB's internal list, | |
79d7f229 | 1947 | adding the thread if it does not already exist. This involves |
c906108c SS |
1948 | getting partial thread lists from the remote target so, polling the |
1949 | quit_flag is required. */ | |
1950 | ||
1951 | ||
23860348 | 1952 | /* About this many threadisds fit in a packet. */ |
c906108c SS |
1953 | |
1954 | #define MAXTHREADLISTRESULTS 32 | |
1955 | ||
1956 | static int | |
fba45db2 KB |
1957 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
1958 | int looplimit) | |
c906108c SS |
1959 | { |
1960 | int done, i, result_count; | |
1961 | int startflag = 1; | |
1962 | int result = 1; | |
1963 | int loopcount = 0; | |
1964 | static threadref nextthread; | |
1965 | static threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
1966 | ||
1967 | done = 0; | |
1968 | while (!done) | |
1969 | { | |
1970 | if (loopcount++ > looplimit) | |
1971 | { | |
1972 | result = 0; | |
8a3fe4f8 | 1973 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
1974 | break; |
1975 | } | |
1976 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS, | |
1977 | &done, &result_count, resultthreadlist)) | |
1978 | { | |
1979 | result = 0; | |
1980 | break; | |
1981 | } | |
23860348 | 1982 | /* Clear for later iterations. */ |
c906108c SS |
1983 | startflag = 0; |
1984 | /* Setup to resume next batch of thread references, set nextthread. */ | |
1985 | if (result_count >= 1) | |
1986 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |
1987 | i = 0; | |
1988 | while (result_count--) | |
1989 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |
1990 | break; | |
1991 | } | |
1992 | return result; | |
1993 | } | |
1994 | ||
1995 | static int | |
fba45db2 | 1996 | remote_newthread_step (threadref *ref, void *context) |
c906108c | 1997 | { |
79d7f229 PA |
1998 | int pid = ptid_get_pid (inferior_ptid); |
1999 | ptid_t ptid = ptid_build (pid, 0, threadref_to_int (ref)); | |
39f77062 KB |
2000 | |
2001 | if (!in_thread_list (ptid)) | |
2002 | add_thread (ptid); | |
c906108c SS |
2003 | return 1; /* continue iterator */ |
2004 | } | |
2005 | ||
2006 | #define CRAZY_MAX_THREADS 1000 | |
2007 | ||
39f77062 KB |
2008 | static ptid_t |
2009 | remote_current_thread (ptid_t oldpid) | |
c906108c | 2010 | { |
d01949b6 | 2011 | struct remote_state *rs = get_remote_state (); |
79d7f229 PA |
2012 | char *p = rs->buf; |
2013 | int tid; | |
2014 | int pid; | |
c906108c SS |
2015 | |
2016 | putpkt ("qC"); | |
6d820c5c | 2017 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2018 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
82f73884 | 2019 | return read_ptid (&rs->buf[2], NULL); |
c906108c SS |
2020 | else |
2021 | return oldpid; | |
2022 | } | |
2023 | ||
802188a7 RM |
2024 | /* Find new threads for info threads command. |
2025 | * Original version, using John Metzler's thread protocol. | |
9d1f7ab2 | 2026 | */ |
cce74817 JM |
2027 | |
2028 | static void | |
fba45db2 | 2029 | remote_find_new_threads (void) |
c906108c | 2030 | { |
c5aa993b JM |
2031 | remote_threadlist_iterator (remote_newthread_step, 0, |
2032 | CRAZY_MAX_THREADS); | |
c906108c SS |
2033 | } |
2034 | ||
9d1f7ab2 MS |
2035 | /* |
2036 | * Find all threads for info threads command. | |
2037 | * Uses new thread protocol contributed by Cisco. | |
2038 | * Falls back and attempts to use the older method (above) | |
2039 | * if the target doesn't respond to the new method. | |
2040 | */ | |
2041 | ||
0f71a2f6 JM |
2042 | static void |
2043 | remote_threads_info (void) | |
2044 | { | |
d01949b6 | 2045 | struct remote_state *rs = get_remote_state (); |
085dd6e6 | 2046 | char *bufp; |
79d7f229 | 2047 | ptid_t new_thread; |
0f71a2f6 JM |
2048 | |
2049 | if (remote_desc == 0) /* paranoia */ | |
8a3fe4f8 | 2050 | error (_("Command can only be used when connected to the remote target.")); |
0f71a2f6 | 2051 | |
9d1f7ab2 MS |
2052 | if (use_threadinfo_query) |
2053 | { | |
2054 | putpkt ("qfThreadInfo"); | |
6d820c5c | 2055 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2056 | bufp = rs->buf; |
9d1f7ab2 | 2057 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 2058 | { |
9d1f7ab2 MS |
2059 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
2060 | { | |
2061 | do | |
2062 | { | |
82f73884 PA |
2063 | new_thread = read_ptid (bufp, &bufp); |
2064 | if (!ptid_equal (new_thread, null_ptid) | |
2065 | && !in_thread_list (new_thread)) | |
2066 | { | |
2067 | if (!in_inferior_list (ptid_get_pid (new_thread))) | |
2068 | /* When connected to a multi-process aware | |
2069 | stub, "info threads" may show up threads of | |
2070 | inferiors we didn't know about yet. Add | |
2071 | them. */ | |
2072 | add_inferior (ptid_get_pid (new_thread)); | |
2073 | ||
2074 | add_thread (new_thread); | |
2075 | } | |
9d1f7ab2 MS |
2076 | } |
2077 | while (*bufp++ == ','); /* comma-separated list */ | |
2078 | putpkt ("qsThreadInfo"); | |
6d820c5c | 2079 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2080 | bufp = rs->buf; |
9d1f7ab2 MS |
2081 | } |
2082 | return; /* done */ | |
2083 | } | |
2084 | } | |
2085 | ||
23860348 | 2086 | /* Else fall back to old method based on jmetzler protocol. */ |
9d1f7ab2 MS |
2087 | use_threadinfo_query = 0; |
2088 | remote_find_new_threads (); | |
2089 | return; | |
2090 | } | |
2091 | ||
802188a7 | 2092 | /* |
9d1f7ab2 MS |
2093 | * Collect a descriptive string about the given thread. |
2094 | * The target may say anything it wants to about the thread | |
2095 | * (typically info about its blocked / runnable state, name, etc.). | |
2096 | * This string will appear in the info threads display. | |
802188a7 | 2097 | * |
9d1f7ab2 MS |
2098 | * Optional: targets are not required to implement this function. |
2099 | */ | |
2100 | ||
2101 | static char * | |
2102 | remote_threads_extra_info (struct thread_info *tp) | |
2103 | { | |
d01949b6 | 2104 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
2105 | int result; |
2106 | int set; | |
2107 | threadref id; | |
2108 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 2109 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
2110 | int n = 0; /* position in display_buf */ |
2111 | ||
2112 | if (remote_desc == 0) /* paranoia */ | |
8e65ff28 | 2113 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 2114 | _("remote_threads_extra_info")); |
9d1f7ab2 | 2115 | |
60e569b9 PA |
2116 | if (ptid_equal (tp->ptid, magic_null_ptid) |
2117 | || (ptid_get_pid (tp->ptid) != 0 && ptid_get_tid (tp->ptid) == 0)) | |
2118 | /* This is the main thread which was added by GDB. The remote | |
2119 | server doesn't know about it. */ | |
2120 | return NULL; | |
2121 | ||
9d1f7ab2 MS |
2122 | if (use_threadextra_query) |
2123 | { | |
82f73884 PA |
2124 | char *b = rs->buf; |
2125 | char *endb = rs->buf + get_remote_packet_size (); | |
2126 | ||
2127 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
2128 | b += strlen (b); | |
2129 | write_ptid (b, endb, tp->ptid); | |
2130 | ||
2e9f7625 | 2131 | putpkt (rs->buf); |
6d820c5c | 2132 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2133 | if (rs->buf[0] != 0) |
9d1f7ab2 | 2134 | { |
2e9f7625 DJ |
2135 | n = min (strlen (rs->buf) / 2, sizeof (display_buf)); |
2136 | result = hex2bin (rs->buf, (gdb_byte *) display_buf, n); | |
30559e10 | 2137 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
2138 | return display_buf; |
2139 | } | |
0f71a2f6 | 2140 | } |
9d1f7ab2 MS |
2141 | |
2142 | /* If the above query fails, fall back to the old method. */ | |
2143 | use_threadextra_query = 0; | |
2144 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
2145 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
79d7f229 | 2146 | int_to_threadref (&id, ptid_get_tid (tp->ptid)); |
9d1f7ab2 MS |
2147 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
2148 | if (threadinfo.active) | |
0f71a2f6 | 2149 | { |
9d1f7ab2 | 2150 | if (*threadinfo.shortname) |
2bc416ba | 2151 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
ecbc58df | 2152 | " Name: %s,", threadinfo.shortname); |
9d1f7ab2 | 2153 | if (*threadinfo.display) |
2bc416ba | 2154 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 2155 | " State: %s,", threadinfo.display); |
9d1f7ab2 | 2156 | if (*threadinfo.more_display) |
2bc416ba | 2157 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 2158 | " Priority: %s", threadinfo.more_display); |
9d1f7ab2 MS |
2159 | |
2160 | if (n > 0) | |
c5aa993b | 2161 | { |
23860348 | 2162 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
2163 | if (',' == display_buf[n-1]) |
2164 | display_buf[n-1] = ' '; | |
2165 | return display_buf; | |
c5aa993b | 2166 | } |
0f71a2f6 | 2167 | } |
9d1f7ab2 | 2168 | return NULL; |
0f71a2f6 | 2169 | } |
c906108c | 2170 | \f |
c5aa993b | 2171 | |
24b06219 | 2172 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
2173 | |
2174 | static void | |
fba45db2 | 2175 | extended_remote_restart (void) |
c906108c | 2176 | { |
d01949b6 | 2177 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2178 | |
2179 | /* Send the restart command; for reasons I don't understand the | |
2180 | remote side really expects a number after the "R". */ | |
ea9c271d | 2181 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); |
6d820c5c | 2182 | putpkt (rs->buf); |
c906108c | 2183 | |
ad9a8f3f | 2184 | remote_fileio_reset (); |
c906108c SS |
2185 | } |
2186 | \f | |
2187 | /* Clean up connection to a remote debugger. */ | |
2188 | ||
c906108c | 2189 | static void |
fba45db2 | 2190 | remote_close (int quitting) |
c906108c SS |
2191 | { |
2192 | if (remote_desc) | |
2cd58942 | 2193 | serial_close (remote_desc); |
c906108c SS |
2194 | remote_desc = NULL; |
2195 | } | |
2196 | ||
23860348 | 2197 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
2198 | |
2199 | static void | |
fba45db2 | 2200 | get_offsets (void) |
c906108c | 2201 | { |
d01949b6 | 2202 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 2203 | char *buf; |
085dd6e6 | 2204 | char *ptr; |
31d99776 DJ |
2205 | int lose, num_segments = 0, do_sections, do_segments; |
2206 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
c906108c | 2207 | struct section_offsets *offs; |
31d99776 DJ |
2208 | struct symfile_segment_data *data; |
2209 | ||
2210 | if (symfile_objfile == NULL) | |
2211 | return; | |
c906108c SS |
2212 | |
2213 | putpkt ("qOffsets"); | |
6d820c5c | 2214 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2215 | buf = rs->buf; |
c906108c SS |
2216 | |
2217 | if (buf[0] == '\000') | |
2218 | return; /* Return silently. Stub doesn't support | |
23860348 | 2219 | this command. */ |
c906108c SS |
2220 | if (buf[0] == 'E') |
2221 | { | |
8a3fe4f8 | 2222 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
2223 | return; |
2224 | } | |
2225 | ||
2226 | /* Pick up each field in turn. This used to be done with scanf, but | |
2227 | scanf will make trouble if CORE_ADDR size doesn't match | |
2228 | conversion directives correctly. The following code will work | |
2229 | with any size of CORE_ADDR. */ | |
2230 | text_addr = data_addr = bss_addr = 0; | |
2231 | ptr = buf; | |
2232 | lose = 0; | |
2233 | ||
2234 | if (strncmp (ptr, "Text=", 5) == 0) | |
2235 | { | |
2236 | ptr += 5; | |
2237 | /* Don't use strtol, could lose on big values. */ | |
2238 | while (*ptr && *ptr != ';') | |
2239 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 2240 | |
31d99776 DJ |
2241 | if (strncmp (ptr, ";Data=", 6) == 0) |
2242 | { | |
2243 | ptr += 6; | |
2244 | while (*ptr && *ptr != ';') | |
2245 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
2246 | } | |
2247 | else | |
2248 | lose = 1; | |
2249 | ||
2250 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
2251 | { | |
2252 | ptr += 5; | |
2253 | while (*ptr && *ptr != ';') | |
2254 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 2255 | |
31d99776 DJ |
2256 | if (bss_addr != data_addr) |
2257 | warning (_("Target reported unsupported offsets: %s"), buf); | |
2258 | } | |
2259 | else | |
2260 | lose = 1; | |
2261 | } | |
2262 | else if (strncmp (ptr, "TextSeg=", 8) == 0) | |
c906108c | 2263 | { |
31d99776 DJ |
2264 | ptr += 8; |
2265 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 2266 | while (*ptr && *ptr != ';') |
31d99776 DJ |
2267 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
2268 | num_segments = 1; | |
2269 | ||
2270 | if (strncmp (ptr, ";DataSeg=", 9) == 0) | |
2271 | { | |
2272 | ptr += 9; | |
2273 | while (*ptr && *ptr != ';') | |
2274 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
2275 | num_segments++; | |
2276 | } | |
c906108c SS |
2277 | } |
2278 | else | |
2279 | lose = 1; | |
2280 | ||
2281 | if (lose) | |
8a3fe4f8 | 2282 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
2283 | else if (*ptr != '\0') |
2284 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 2285 | |
802188a7 | 2286 | offs = ((struct section_offsets *) |
a39a16c4 | 2287 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 2288 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 2289 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 2290 | |
31d99776 DJ |
2291 | data = get_symfile_segment_data (symfile_objfile->obfd); |
2292 | do_segments = (data != NULL); | |
2293 | do_sections = num_segments == 0; | |
c906108c | 2294 | |
28c32713 | 2295 | if (num_segments > 0) |
31d99776 | 2296 | { |
31d99776 DJ |
2297 | segments[0] = text_addr; |
2298 | segments[1] = data_addr; | |
2299 | } | |
28c32713 JB |
2300 | /* If we have two segments, we can still try to relocate everything |
2301 | by assuming that the .text and .data offsets apply to the whole | |
2302 | text and data segments. Convert the offsets given in the packet | |
2303 | to base addresses for symfile_map_offsets_to_segments. */ | |
2304 | else if (data && data->num_segments == 2) | |
2305 | { | |
2306 | segments[0] = data->segment_bases[0] + text_addr; | |
2307 | segments[1] = data->segment_bases[1] + data_addr; | |
2308 | num_segments = 2; | |
2309 | } | |
8d385431 DJ |
2310 | /* If the object file has only one segment, assume that it is text |
2311 | rather than data; main programs with no writable data are rare, | |
2312 | but programs with no code are useless. Of course the code might | |
2313 | have ended up in the data segment... to detect that we would need | |
2314 | the permissions here. */ | |
2315 | else if (data && data->num_segments == 1) | |
2316 | { | |
2317 | segments[0] = data->segment_bases[0] + text_addr; | |
2318 | num_segments = 1; | |
2319 | } | |
28c32713 JB |
2320 | /* There's no way to relocate by segment. */ |
2321 | else | |
2322 | do_segments = 0; | |
31d99776 DJ |
2323 | |
2324 | if (do_segments) | |
2325 | { | |
2326 | int ret = symfile_map_offsets_to_segments (symfile_objfile->obfd, data, | |
2327 | offs, num_segments, segments); | |
2328 | ||
2329 | if (ret == 0 && !do_sections) | |
2330 | error (_("Can not handle qOffsets TextSeg response with this symbol file")); | |
2331 | ||
2332 | if (ret > 0) | |
2333 | do_sections = 0; | |
2334 | } | |
c906108c | 2335 | |
9ef895d6 DJ |
2336 | if (data) |
2337 | free_symfile_segment_data (data); | |
31d99776 DJ |
2338 | |
2339 | if (do_sections) | |
2340 | { | |
2341 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; | |
2342 | ||
2343 | /* This is a temporary kludge to force data and bss to use the same offsets | |
2344 | because that's what nlmconv does now. The real solution requires changes | |
2345 | to the stub and remote.c that I don't have time to do right now. */ | |
2346 | ||
2347 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; | |
2348 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
2349 | } | |
c906108c SS |
2350 | |
2351 | objfile_relocate (symfile_objfile, offs); | |
2352 | } | |
2353 | ||
8621d6a9 | 2354 | /* Stub for catch_exception. */ |
0f71a2f6 | 2355 | |
2d717e4f DJ |
2356 | struct start_remote_args |
2357 | { | |
2358 | int from_tty; | |
2359 | ||
2360 | /* The current target. */ | |
2361 | struct target_ops *target; | |
2362 | ||
2363 | /* Non-zero if this is an extended-remote target. */ | |
2364 | int extended_p; | |
2365 | }; | |
2366 | ||
9cbc821d | 2367 | static void |
2d717e4f | 2368 | remote_start_remote (struct ui_out *uiout, void *opaque) |
c906108c | 2369 | { |
2d717e4f DJ |
2370 | struct remote_state *rs = get_remote_state (); |
2371 | struct start_remote_args *args = opaque; | |
2372 | char *wait_status = NULL; | |
8621d6a9 | 2373 | |
23860348 | 2374 | immediate_quit++; /* Allow user to interrupt it. */ |
c906108c | 2375 | |
2d717e4f DJ |
2376 | /* Check whether the target is running now. */ |
2377 | putpkt ("?"); | |
2378 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2379 | ||
2380 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') | |
2381 | { | |
2382 | if (args->extended_p) | |
2383 | { | |
2384 | /* We're connected, but not running. Drop out before we | |
2385 | call start_remote. */ | |
2386 | target_mark_exited (args->target); | |
2387 | return; | |
2388 | } | |
2389 | else | |
2390 | error (_("The target is not running (try extended-remote?)")); | |
2391 | } | |
2392 | else | |
2393 | { | |
2394 | if (args->extended_p) | |
2395 | target_mark_running (args->target); | |
2396 | ||
2397 | /* Save the reply for later. */ | |
2398 | wait_status = alloca (strlen (rs->buf) + 1); | |
2399 | strcpy (wait_status, rs->buf); | |
2400 | } | |
2401 | ||
c0a2216e PA |
2402 | /* Start afresh. */ |
2403 | init_thread_list (); | |
2404 | ||
c906108c | 2405 | /* Let the stub know that we want it to return the thread. */ |
79d7f229 | 2406 | set_continue_thread (minus_one_ptid); |
c906108c | 2407 | |
2d717e4f DJ |
2408 | /* Without this, some commands which require an active target |
2409 | (such as kill) won't work. This variable serves (at least) | |
2410 | double duty as both the pid of the target process (if it has | |
2411 | such), and as a flag indicating that a target is active. | |
2412 | These functions should be split out into seperate variables, | |
2413 | especially since GDB will someday have a notion of debugging | |
2414 | several processes. */ | |
79d7f229 | 2415 | inferior_ptid = magic_null_ptid; |
2d717e4f DJ |
2416 | |
2417 | /* Now, if we have thread information, update inferior_ptid. */ | |
39f77062 | 2418 | inferior_ptid = remote_current_thread (inferior_ptid); |
c906108c | 2419 | |
82f73884 PA |
2420 | add_inferior (ptid_get_pid (inferior_ptid)); |
2421 | ||
c0a2216e PA |
2422 | /* Always add the main thread. */ |
2423 | add_thread_silent (inferior_ptid); | |
2424 | ||
23860348 | 2425 | get_offsets (); /* Get text, data & bss offsets. */ |
c906108c | 2426 | |
2d717e4f DJ |
2427 | /* Use the previously fetched status. */ |
2428 | gdb_assert (wait_status != NULL); | |
2429 | strcpy (rs->buf, wait_status); | |
2430 | rs->cached_wait_status = 1; | |
c906108c | 2431 | |
2d717e4f DJ |
2432 | immediate_quit--; |
2433 | start_remote (args->from_tty); /* Initialize gdb process mechanisms. */ | |
c906108c SS |
2434 | } |
2435 | ||
2436 | /* Open a connection to a remote debugger. | |
2437 | NAME is the filename used for communication. */ | |
2438 | ||
2439 | static void | |
fba45db2 | 2440 | remote_open (char *name, int from_tty) |
c906108c | 2441 | { |
75c99385 | 2442 | remote_open_1 (name, from_tty, &remote_ops, 0); |
43ff13b4 JM |
2443 | } |
2444 | ||
c906108c SS |
2445 | /* Open a connection to a remote debugger using the extended |
2446 | remote gdb protocol. NAME is the filename used for communication. */ | |
2447 | ||
2448 | static void | |
fba45db2 | 2449 | extended_remote_open (char *name, int from_tty) |
c906108c | 2450 | { |
75c99385 | 2451 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */); |
43ff13b4 JM |
2452 | } |
2453 | ||
c906108c SS |
2454 | /* Generic code for opening a connection to a remote target. */ |
2455 | ||
d471ea57 AC |
2456 | static void |
2457 | init_all_packet_configs (void) | |
2458 | { | |
2459 | int i; | |
444abaca DJ |
2460 | for (i = 0; i < PACKET_MAX; i++) |
2461 | update_packet_config (&remote_protocol_packets[i]); | |
d471ea57 AC |
2462 | } |
2463 | ||
23860348 | 2464 | /* Symbol look-up. */ |
dc8acb97 MS |
2465 | |
2466 | static void | |
2467 | remote_check_symbols (struct objfile *objfile) | |
2468 | { | |
d01949b6 | 2469 | struct remote_state *rs = get_remote_state (); |
dc8acb97 MS |
2470 | char *msg, *reply, *tmp; |
2471 | struct minimal_symbol *sym; | |
2472 | int end; | |
2473 | ||
444abaca | 2474 | if (remote_protocol_packets[PACKET_qSymbol].support == PACKET_DISABLE) |
dc8acb97 MS |
2475 | return; |
2476 | ||
6d820c5c DJ |
2477 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
2478 | because we need both at the same time. */ | |
ea9c271d | 2479 | msg = alloca (get_remote_packet_size ()); |
6d820c5c | 2480 | |
23860348 | 2481 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
2482 | |
2483 | putpkt ("qSymbol::"); | |
6d820c5c DJ |
2484 | getpkt (&rs->buf, &rs->buf_size, 0); |
2485 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSymbol]); | |
2e9f7625 | 2486 | reply = rs->buf; |
dc8acb97 MS |
2487 | |
2488 | while (strncmp (reply, "qSymbol:", 8) == 0) | |
2489 | { | |
2490 | tmp = &reply[8]; | |
cfd77fa1 | 2491 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
2492 | msg[end] = '\0'; |
2493 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
2494 | if (sym == NULL) | |
ea9c271d | 2495 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
dc8acb97 | 2496 | else |
2bbe3cc1 DJ |
2497 | { |
2498 | CORE_ADDR sym_addr = SYMBOL_VALUE_ADDRESS (sym); | |
2499 | ||
2500 | /* If this is a function address, return the start of code | |
2501 | instead of any data function descriptor. */ | |
1cf3db46 | 2502 | sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch, |
2bbe3cc1 DJ |
2503 | sym_addr, |
2504 | ¤t_target); | |
2505 | ||
2506 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", | |
2507 | paddr_nz (sym_addr), &reply[8]); | |
2508 | } | |
2509 | ||
dc8acb97 | 2510 | putpkt (msg); |
6d820c5c | 2511 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2512 | reply = rs->buf; |
dc8acb97 MS |
2513 | } |
2514 | } | |
2515 | ||
9db8d71f DJ |
2516 | static struct serial * |
2517 | remote_serial_open (char *name) | |
2518 | { | |
2519 | static int udp_warning = 0; | |
2520 | ||
2521 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
2522 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
2523 | serial connection is reliable and not the serial connection promising | |
2524 | to be. */ | |
2525 | if (!udp_warning && strncmp (name, "udp:", 4) == 0) | |
2526 | { | |
8a3fe4f8 AC |
2527 | warning (_("\ |
2528 | The remote protocol may be unreliable over UDP.\n\ | |
2529 | Some events may be lost, rendering further debugging impossible.")); | |
9db8d71f DJ |
2530 | udp_warning = 1; |
2531 | } | |
2532 | ||
2533 | return serial_open (name); | |
2534 | } | |
2535 | ||
be2a5f71 DJ |
2536 | /* This type describes each known response to the qSupported |
2537 | packet. */ | |
2538 | struct protocol_feature | |
2539 | { | |
2540 | /* The name of this protocol feature. */ | |
2541 | const char *name; | |
2542 | ||
2543 | /* The default for this protocol feature. */ | |
2544 | enum packet_support default_support; | |
2545 | ||
2546 | /* The function to call when this feature is reported, or after | |
2547 | qSupported processing if the feature is not supported. | |
2548 | The first argument points to this structure. The second | |
2549 | argument indicates whether the packet requested support be | |
2550 | enabled, disabled, or probed (or the default, if this function | |
2551 | is being called at the end of processing and this feature was | |
2552 | not reported). The third argument may be NULL; if not NULL, it | |
2553 | is a NUL-terminated string taken from the packet following | |
2554 | this feature's name and an equals sign. */ | |
2555 | void (*func) (const struct protocol_feature *, enum packet_support, | |
2556 | const char *); | |
2557 | ||
2558 | /* The corresponding packet for this feature. Only used if | |
2559 | FUNC is remote_supported_packet. */ | |
2560 | int packet; | |
2561 | }; | |
2562 | ||
be2a5f71 DJ |
2563 | static void |
2564 | remote_supported_packet (const struct protocol_feature *feature, | |
2565 | enum packet_support support, | |
2566 | const char *argument) | |
2567 | { | |
2568 | if (argument) | |
2569 | { | |
2570 | warning (_("Remote qSupported response supplied an unexpected value for" | |
2571 | " \"%s\"."), feature->name); | |
2572 | return; | |
2573 | } | |
2574 | ||
2575 | if (remote_protocol_packets[feature->packet].support | |
2576 | == PACKET_SUPPORT_UNKNOWN) | |
2577 | remote_protocol_packets[feature->packet].support = support; | |
2578 | } | |
be2a5f71 DJ |
2579 | |
2580 | static void | |
2581 | remote_packet_size (const struct protocol_feature *feature, | |
2582 | enum packet_support support, const char *value) | |
2583 | { | |
2584 | struct remote_state *rs = get_remote_state (); | |
2585 | ||
2586 | int packet_size; | |
2587 | char *value_end; | |
2588 | ||
2589 | if (support != PACKET_ENABLE) | |
2590 | return; | |
2591 | ||
2592 | if (value == NULL || *value == '\0') | |
2593 | { | |
2594 | warning (_("Remote target reported \"%s\" without a size."), | |
2595 | feature->name); | |
2596 | return; | |
2597 | } | |
2598 | ||
2599 | errno = 0; | |
2600 | packet_size = strtol (value, &value_end, 16); | |
2601 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
2602 | { | |
2603 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
2604 | feature->name, value); | |
2605 | return; | |
2606 | } | |
2607 | ||
2608 | if (packet_size > MAX_REMOTE_PACKET_SIZE) | |
2609 | { | |
2610 | warning (_("limiting remote suggested packet size (%d bytes) to %d"), | |
2611 | packet_size, MAX_REMOTE_PACKET_SIZE); | |
2612 | packet_size = MAX_REMOTE_PACKET_SIZE; | |
2613 | } | |
2614 | ||
2615 | /* Record the new maximum packet size. */ | |
2616 | rs->explicit_packet_size = packet_size; | |
2617 | } | |
2618 | ||
82f73884 PA |
2619 | static void |
2620 | remote_multi_process_feature (const struct protocol_feature *feature, | |
2621 | enum packet_support support, const char *value) | |
2622 | { | |
2623 | struct remote_state *rs = get_remote_state (); | |
2624 | rs->multi_process_aware = (support == PACKET_ENABLE); | |
2625 | } | |
2626 | ||
be2a5f71 | 2627 | static struct protocol_feature remote_protocol_features[] = { |
0876f84a | 2628 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 2629 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 2630 | PACKET_qXfer_auxv }, |
23181151 DJ |
2631 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
2632 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
2633 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
2634 | PACKET_qXfer_libraries }, | |
fd79ecee | 2635 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 2636 | PACKET_qXfer_memory_map }, |
4de6483e UW |
2637 | { "qXfer:spu:read", PACKET_DISABLE, remote_supported_packet, |
2638 | PACKET_qXfer_spu_read }, | |
2639 | { "qXfer:spu:write", PACKET_DISABLE, remote_supported_packet, | |
2640 | PACKET_qXfer_spu_write }, | |
89be2091 DJ |
2641 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
2642 | PACKET_QPassSignals }, | |
a6f3e723 SL |
2643 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
2644 | PACKET_QStartNoAckMode }, | |
82f73884 | 2645 | { "multiprocess", PACKET_DISABLE, remote_multi_process_feature, -1 }, |
be2a5f71 DJ |
2646 | }; |
2647 | ||
2648 | static void | |
2649 | remote_query_supported (void) | |
2650 | { | |
2651 | struct remote_state *rs = get_remote_state (); | |
2652 | char *next; | |
2653 | int i; | |
2654 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
2655 | ||
2656 | /* The packet support flags are handled differently for this packet | |
2657 | than for most others. We treat an error, a disabled packet, and | |
2658 | an empty response identically: any features which must be reported | |
2659 | to be used will be automatically disabled. An empty buffer | |
2660 | accomplishes this, since that is also the representation for a list | |
2661 | containing no features. */ | |
2662 | ||
2663 | rs->buf[0] = 0; | |
2664 | if (remote_protocol_packets[PACKET_qSupported].support != PACKET_DISABLE) | |
2665 | { | |
82f73884 PA |
2666 | if (rs->extended) |
2667 | putpkt ("qSupported:multiprocess+"); | |
2668 | else | |
2669 | putpkt ("qSupported"); | |
2670 | ||
be2a5f71 DJ |
2671 | getpkt (&rs->buf, &rs->buf_size, 0); |
2672 | ||
2673 | /* If an error occured, warn, but do not return - just reset the | |
2674 | buffer to empty and go on to disable features. */ | |
2675 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
2676 | == PACKET_ERROR) | |
2677 | { | |
2678 | warning (_("Remote failure reply: %s"), rs->buf); | |
2679 | rs->buf[0] = 0; | |
2680 | } | |
2681 | } | |
2682 | ||
2683 | memset (seen, 0, sizeof (seen)); | |
2684 | ||
2685 | next = rs->buf; | |
2686 | while (*next) | |
2687 | { | |
2688 | enum packet_support is_supported; | |
2689 | char *p, *end, *name_end, *value; | |
2690 | ||
2691 | /* First separate out this item from the rest of the packet. If | |
2692 | there's another item after this, we overwrite the separator | |
2693 | (terminated strings are much easier to work with). */ | |
2694 | p = next; | |
2695 | end = strchr (p, ';'); | |
2696 | if (end == NULL) | |
2697 | { | |
2698 | end = p + strlen (p); | |
2699 | next = end; | |
2700 | } | |
2701 | else | |
2702 | { | |
89be2091 DJ |
2703 | *end = '\0'; |
2704 | next = end + 1; | |
2705 | ||
be2a5f71 DJ |
2706 | if (end == p) |
2707 | { | |
2708 | warning (_("empty item in \"qSupported\" response")); | |
2709 | continue; | |
2710 | } | |
be2a5f71 DJ |
2711 | } |
2712 | ||
2713 | name_end = strchr (p, '='); | |
2714 | if (name_end) | |
2715 | { | |
2716 | /* This is a name=value entry. */ | |
2717 | is_supported = PACKET_ENABLE; | |
2718 | value = name_end + 1; | |
2719 | *name_end = '\0'; | |
2720 | } | |
2721 | else | |
2722 | { | |
2723 | value = NULL; | |
2724 | switch (end[-1]) | |
2725 | { | |
2726 | case '+': | |
2727 | is_supported = PACKET_ENABLE; | |
2728 | break; | |
2729 | ||
2730 | case '-': | |
2731 | is_supported = PACKET_DISABLE; | |
2732 | break; | |
2733 | ||
2734 | case '?': | |
2735 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
2736 | break; | |
2737 | ||
2738 | default: | |
2739 | warning (_("unrecognized item \"%s\" in \"qSupported\" response"), p); | |
2740 | continue; | |
2741 | } | |
2742 | end[-1] = '\0'; | |
2743 | } | |
2744 | ||
2745 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
2746 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
2747 | { | |
2748 | const struct protocol_feature *feature; | |
2749 | ||
2750 | seen[i] = 1; | |
2751 | feature = &remote_protocol_features[i]; | |
2752 | feature->func (feature, is_supported, value); | |
2753 | break; | |
2754 | } | |
2755 | } | |
2756 | ||
2757 | /* If we increased the packet size, make sure to increase the global | |
2758 | buffer size also. We delay this until after parsing the entire | |
2759 | qSupported packet, because this is the same buffer we were | |
2760 | parsing. */ | |
2761 | if (rs->buf_size < rs->explicit_packet_size) | |
2762 | { | |
2763 | rs->buf_size = rs->explicit_packet_size; | |
2764 | rs->buf = xrealloc (rs->buf, rs->buf_size); | |
2765 | } | |
2766 | ||
2767 | /* Handle the defaults for unmentioned features. */ | |
2768 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
2769 | if (!seen[i]) | |
2770 | { | |
2771 | const struct protocol_feature *feature; | |
2772 | ||
2773 | feature = &remote_protocol_features[i]; | |
2774 | feature->func (feature, feature->default_support, NULL); | |
2775 | } | |
2776 | } | |
2777 | ||
2778 | ||
c906108c | 2779 | static void |
75c99385 | 2780 | remote_open_1 (char *name, int from_tty, struct target_ops *target, int extended_p) |
c906108c | 2781 | { |
d01949b6 | 2782 | struct remote_state *rs = get_remote_state (); |
a6f3e723 SL |
2783 | struct packet_config *noack_config; |
2784 | ||
c906108c | 2785 | if (name == 0) |
8a3fe4f8 | 2786 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 2787 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 2788 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 2789 | |
23860348 | 2790 | /* See FIXME above. */ |
c6ebd6cf | 2791 | if (!target_async_permitted) |
92d1e331 | 2792 | wait_forever_enabled_p = 1; |
6426a772 | 2793 | |
2d717e4f DJ |
2794 | /* If we're connected to a running target, target_preopen will kill it. |
2795 | But if we're connected to a target system with no running process, | |
2796 | then we will still be connected when it returns. Ask this question | |
2797 | first, before target_preopen has a chance to kill anything. */ | |
2798 | if (remote_desc != NULL && !target_has_execution) | |
2799 | { | |
2800 | if (!from_tty | |
2801 | || query (_("Already connected to a remote target. Disconnect? "))) | |
2802 | pop_target (); | |
2803 | else | |
2804 | error (_("Still connected.")); | |
2805 | } | |
2806 | ||
c906108c SS |
2807 | target_preopen (from_tty); |
2808 | ||
2809 | unpush_target (target); | |
2810 | ||
2d717e4f DJ |
2811 | /* This time without a query. If we were connected to an |
2812 | extended-remote target and target_preopen killed the running | |
2813 | process, we may still be connected. If we are starting "target | |
2814 | remote" now, the extended-remote target will not have been | |
2815 | removed by unpush_target. */ | |
2816 | if (remote_desc != NULL && !target_has_execution) | |
2817 | pop_target (); | |
2818 | ||
89be2091 DJ |
2819 | /* Make sure we send the passed signals list the next time we resume. */ |
2820 | xfree (last_pass_packet); | |
2821 | last_pass_packet = NULL; | |
2822 | ||
ad9a8f3f | 2823 | remote_fileio_reset (); |
1dd41f16 NS |
2824 | reopen_exec_file (); |
2825 | reread_symbols (); | |
2826 | ||
9db8d71f | 2827 | remote_desc = remote_serial_open (name); |
c906108c SS |
2828 | if (!remote_desc) |
2829 | perror_with_name (name); | |
2830 | ||
2831 | if (baud_rate != -1) | |
2832 | { | |
2cd58942 | 2833 | if (serial_setbaudrate (remote_desc, baud_rate)) |
c906108c | 2834 | { |
9b74d5d3 KB |
2835 | /* The requested speed could not be set. Error out to |
2836 | top level after closing remote_desc. Take care to | |
2837 | set remote_desc to NULL to avoid closing remote_desc | |
2838 | more than once. */ | |
2cd58942 | 2839 | serial_close (remote_desc); |
9b74d5d3 | 2840 | remote_desc = NULL; |
c906108c SS |
2841 | perror_with_name (name); |
2842 | } | |
2843 | } | |
2844 | ||
2cd58942 | 2845 | serial_raw (remote_desc); |
c906108c SS |
2846 | |
2847 | /* If there is something sitting in the buffer we might take it as a | |
2848 | response to a command, which would be bad. */ | |
2cd58942 | 2849 | serial_flush_input (remote_desc); |
c906108c SS |
2850 | |
2851 | if (from_tty) | |
2852 | { | |
2853 | puts_filtered ("Remote debugging using "); | |
2854 | puts_filtered (name); | |
2855 | puts_filtered ("\n"); | |
2856 | } | |
23860348 | 2857 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 2858 | |
2d717e4f DJ |
2859 | /* Assume that the target is running, unless we learn otherwise. */ |
2860 | target_mark_running (target); | |
2861 | ||
be2a5f71 DJ |
2862 | /* Reset the target state; these things will be queried either by |
2863 | remote_query_supported or as they are needed. */ | |
d471ea57 | 2864 | init_all_packet_configs (); |
be2a5f71 | 2865 | rs->explicit_packet_size = 0; |
a6f3e723 | 2866 | rs->noack_mode = 0; |
82f73884 PA |
2867 | rs->multi_process_aware = 0; |
2868 | rs->extended = extended_p; | |
802188a7 | 2869 | |
79d7f229 PA |
2870 | general_thread = not_sent_ptid; |
2871 | continue_thread = not_sent_ptid; | |
c906108c | 2872 | |
9d1f7ab2 MS |
2873 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
2874 | use_threadinfo_query = 1; | |
2875 | use_threadextra_query = 1; | |
2876 | ||
a6f3e723 SL |
2877 | /* Ack any packet which the remote side has already sent. */ |
2878 | serial_write (remote_desc, "+", 1); | |
2879 | ||
be2a5f71 DJ |
2880 | /* The first packet we send to the target is the optional "supported |
2881 | packets" request. If the target can answer this, it will tell us | |
2882 | which later probes to skip. */ | |
2883 | remote_query_supported (); | |
2884 | ||
a6f3e723 SL |
2885 | /* Next, we possibly activate noack mode. |
2886 | ||
2887 | If the QStartNoAckMode packet configuration is set to AUTO, | |
2888 | enable noack mode if the stub reported a wish for it with | |
2889 | qSupported. | |
2890 | ||
2891 | If set to TRUE, then enable noack mode even if the stub didn't | |
2892 | report it in qSupported. If the stub doesn't reply OK, the | |
2893 | session ends with an error. | |
2894 | ||
2895 | If FALSE, then don't activate noack mode, regardless of what the | |
2896 | stub claimed should be the default with qSupported. */ | |
2897 | ||
2898 | noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode]; | |
2899 | ||
2900 | if (noack_config->detect == AUTO_BOOLEAN_TRUE | |
2901 | || (noack_config->detect == AUTO_BOOLEAN_AUTO | |
2902 | && noack_config->support == PACKET_ENABLE)) | |
2903 | { | |
2904 | putpkt ("QStartNoAckMode"); | |
2905 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2906 | if (packet_ok (rs->buf, noack_config) == PACKET_OK) | |
2907 | rs->noack_mode = 1; | |
2908 | } | |
2909 | ||
424163ea DJ |
2910 | /* Next, if the target can specify a description, read it. We do |
2911 | this before anything involving memory or registers. */ | |
2912 | target_find_description (); | |
2913 | ||
c6ebd6cf | 2914 | if (target_async_permitted) |
92d1e331 | 2915 | { |
23860348 | 2916 | /* With this target we start out by owning the terminal. */ |
92d1e331 DJ |
2917 | remote_async_terminal_ours_p = 1; |
2918 | ||
2919 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
2920 | assumed that the target is already ready and able to respond to | |
2921 | requests. Unfortunately remote_start_remote() eventually calls | |
2922 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets | |
2923 | around this. Eventually a mechanism that allows | |
2924 | wait_for_inferior() to expect/get timeouts will be | |
23860348 | 2925 | implemented. */ |
92d1e331 DJ |
2926 | wait_forever_enabled_p = 0; |
2927 | } | |
2928 | ||
23860348 | 2929 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 2930 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 2931 | |
36918e70 | 2932 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
2933 | target (we'd otherwise be in an inconsistent state) and then |
2934 | propogate the error on up the exception chain. This ensures that | |
2935 | the caller doesn't stumble along blindly assuming that the | |
2936 | function succeeded. The CLI doesn't have this problem but other | |
2937 | UI's, such as MI do. | |
36918e70 AC |
2938 | |
2939 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
2940 | this function should return an error indication letting the | |
ce2826aa | 2941 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
2942 | ``target remote'' is directly wired to this function making that |
2943 | impossible. On a positive note, the CLI side of this problem has | |
2944 | been fixed - the function set_cmd_context() makes it possible for | |
2945 | all the ``target ....'' commands to share a common callback | |
2946 | function. See cli-dump.c. */ | |
109c3e39 | 2947 | { |
2d717e4f DJ |
2948 | struct gdb_exception ex; |
2949 | struct start_remote_args args; | |
2950 | ||
2951 | args.from_tty = from_tty; | |
2952 | args.target = target; | |
2953 | args.extended_p = extended_p; | |
2954 | ||
2955 | ex = catch_exception (uiout, remote_start_remote, &args, RETURN_MASK_ALL); | |
109c3e39 AC |
2956 | if (ex.reason < 0) |
2957 | { | |
2958 | pop_target (); | |
c6ebd6cf | 2959 | if (target_async_permitted) |
109c3e39 AC |
2960 | wait_forever_enabled_p = 1; |
2961 | throw_exception (ex); | |
2962 | } | |
2963 | } | |
c906108c | 2964 | |
c6ebd6cf | 2965 | if (target_async_permitted) |
92d1e331 | 2966 | wait_forever_enabled_p = 1; |
6426a772 JM |
2967 | |
2968 | if (extended_p) | |
43ff13b4 | 2969 | { |
6240bebf | 2970 | /* Tell the remote that we are using the extended protocol. */ |
6426a772 | 2971 | putpkt ("!"); |
6d820c5c | 2972 | getpkt (&rs->buf, &rs->buf_size, 0); |
43ff13b4 | 2973 | } |
a77053c2 | 2974 | |
2d717e4f DJ |
2975 | /* If we connected to a live target, do some additional setup. */ |
2976 | if (target_has_execution) | |
2977 | { | |
2978 | if (exec_bfd) /* No use without an exec file. */ | |
2979 | remote_check_symbols (symfile_objfile); | |
2980 | } | |
43ff13b4 JM |
2981 | } |
2982 | ||
c906108c SS |
2983 | /* This takes a program previously attached to and detaches it. After |
2984 | this is done, GDB can be used to debug some other program. We | |
2985 | better not have left any breakpoints in the target program or it'll | |
2986 | die when it hits one. */ | |
2987 | ||
2988 | static void | |
2d717e4f | 2989 | remote_detach_1 (char *args, int from_tty, int extended) |
c906108c | 2990 | { |
82f73884 | 2991 | int pid = ptid_get_pid (inferior_ptid); |
d01949b6 | 2992 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2993 | |
2994 | if (args) | |
8a3fe4f8 | 2995 | error (_("Argument given to \"detach\" when remotely debugging.")); |
c906108c | 2996 | |
2d717e4f DJ |
2997 | if (!target_has_execution) |
2998 | error (_("No process to detach from.")); | |
2999 | ||
c906108c | 3000 | /* Tell the remote target to detach. */ |
82f73884 PA |
3001 | if (remote_multi_process_p (rs)) |
3002 | sprintf (rs->buf, "D;%x", pid); | |
3003 | else | |
3004 | strcpy (rs->buf, "D"); | |
3005 | ||
4ddda9b5 PA |
3006 | putpkt (rs->buf); |
3007 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3008 | ||
82f73884 PA |
3009 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') |
3010 | ; | |
3011 | else if (rs->buf[0] == '\0') | |
3012 | error (_("Remote doesn't know how to detach")); | |
3013 | else | |
4ddda9b5 | 3014 | error (_("Can't detach process.")); |
c906108c | 3015 | |
23860348 | 3016 | /* Unregister the file descriptor from the event loop. */ |
6ad8ae5c DJ |
3017 | if (target_is_async_p ()) |
3018 | serial_async (remote_desc, NULL, 0); | |
3019 | ||
c906108c | 3020 | if (from_tty) |
2d717e4f | 3021 | { |
82f73884 PA |
3022 | if (remote_multi_process_p (rs)) |
3023 | printf_filtered (_("Detached from remote %s.\n"), | |
3024 | target_pid_to_str (pid_to_ptid (pid))); | |
2d717e4f | 3025 | else |
82f73884 PA |
3026 | { |
3027 | if (extended) | |
3028 | puts_filtered (_("Detached from remote process.\n")); | |
3029 | else | |
3030 | puts_filtered (_("Ending remote debugging.\n")); | |
3031 | } | |
2d717e4f | 3032 | } |
82f73884 PA |
3033 | |
3034 | detach_inferior (pid); | |
3035 | target_mourn_inferior (); | |
2d717e4f DJ |
3036 | } |
3037 | ||
3038 | static void | |
3039 | remote_detach (char *args, int from_tty) | |
3040 | { | |
3041 | remote_detach_1 (args, from_tty, 0); | |
3042 | } | |
3043 | ||
3044 | static void | |
3045 | extended_remote_detach (char *args, int from_tty) | |
3046 | { | |
3047 | remote_detach_1 (args, from_tty, 1); | |
c906108c SS |
3048 | } |
3049 | ||
6ad8ae5c DJ |
3050 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
3051 | ||
43ff13b4 | 3052 | static void |
597320e7 | 3053 | remote_disconnect (struct target_ops *target, char *args, int from_tty) |
43ff13b4 | 3054 | { |
43ff13b4 | 3055 | if (args) |
2d717e4f | 3056 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 3057 | |
23860348 | 3058 | /* Unregister the file descriptor from the event loop. */ |
ed9a39eb | 3059 | if (target_is_async_p ()) |
2cd58942 | 3060 | serial_async (remote_desc, NULL, 0); |
43ff13b4 | 3061 | |
2d717e4f DJ |
3062 | /* Make sure we unpush even the extended remote targets; mourn |
3063 | won't do it. So call remote_mourn_1 directly instead of | |
3064 | target_mourn_inferior. */ | |
3065 | remote_mourn_1 (target); | |
3066 | ||
43ff13b4 JM |
3067 | if (from_tty) |
3068 | puts_filtered ("Ending remote debugging.\n"); | |
3069 | } | |
3070 | ||
2d717e4f DJ |
3071 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
3072 | be chatty about it. */ | |
3073 | ||
3074 | static void | |
3075 | extended_remote_attach_1 (struct target_ops *target, char *args, int from_tty) | |
3076 | { | |
3077 | struct remote_state *rs = get_remote_state (); | |
be86555c | 3078 | int pid; |
2d717e4f | 3079 | char *dummy; |
96ef3384 | 3080 | char *wait_status = NULL; |
181e7f93 | 3081 | struct inferior *inf; |
2d717e4f DJ |
3082 | |
3083 | if (!args) | |
3084 | error_no_arg (_("process-id to attach")); | |
3085 | ||
3086 | dummy = args; | |
3087 | pid = strtol (args, &dummy, 0); | |
3088 | /* Some targets don't set errno on errors, grrr! */ | |
3089 | if (pid == 0 && args == dummy) | |
3090 | error (_("Illegal process-id: %s."), args); | |
3091 | ||
3092 | if (remote_protocol_packets[PACKET_vAttach].support == PACKET_DISABLE) | |
3093 | error (_("This target does not support attaching to a process")); | |
3094 | ||
3095 | sprintf (rs->buf, "vAttach;%x", pid); | |
3096 | putpkt (rs->buf); | |
3097 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3098 | ||
3099 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vAttach]) == PACKET_OK) | |
3100 | { | |
3101 | if (from_tty) | |
3102 | printf_unfiltered (_("Attached to %s\n"), | |
3103 | target_pid_to_str (pid_to_ptid (pid))); | |
3104 | ||
96ef3384 UW |
3105 | /* Save the reply for later. */ |
3106 | wait_status = alloca (strlen (rs->buf) + 1); | |
3107 | strcpy (wait_status, rs->buf); | |
2d717e4f DJ |
3108 | } |
3109 | else if (remote_protocol_packets[PACKET_vAttach].support == PACKET_DISABLE) | |
3110 | error (_("This target does not support attaching to a process")); | |
3111 | else | |
3112 | error (_("Attaching to %s failed"), | |
3113 | target_pid_to_str (pid_to_ptid (pid))); | |
3114 | ||
3115 | target_mark_running (target); | |
3116 | inferior_ptid = pid_to_ptid (pid); | |
79d7f229 PA |
3117 | |
3118 | /* Now, if we have thread information, update inferior_ptid. */ | |
3119 | inferior_ptid = remote_current_thread (inferior_ptid); | |
3120 | ||
181e7f93 PA |
3121 | inf = add_inferior (pid); |
3122 | inf->attach_flag = 1; | |
82f73884 | 3123 | |
c0a2216e PA |
3124 | /* Now, add the main thread to the thread list. */ |
3125 | add_thread_silent (inferior_ptid); | |
3126 | ||
96ef3384 UW |
3127 | /* Next, if the target can specify a description, read it. We do |
3128 | this before anything involving memory or registers. */ | |
3129 | target_find_description (); | |
3130 | ||
3131 | /* Use the previously fetched status. */ | |
3132 | gdb_assert (wait_status != NULL); | |
3133 | strcpy (rs->buf, wait_status); | |
3134 | rs->cached_wait_status = 1; | |
2d717e4f DJ |
3135 | } |
3136 | ||
3137 | static void | |
3138 | extended_remote_attach (char *args, int from_tty) | |
3139 | { | |
3140 | extended_remote_attach_1 (&extended_remote_ops, args, from_tty); | |
3141 | } | |
3142 | ||
c906108c SS |
3143 | /* Convert hex digit A to a number. */ |
3144 | ||
30559e10 | 3145 | static int |
fba45db2 | 3146 | fromhex (int a) |
c906108c SS |
3147 | { |
3148 | if (a >= '0' && a <= '9') | |
3149 | return a - '0'; | |
3150 | else if (a >= 'a' && a <= 'f') | |
3151 | return a - 'a' + 10; | |
3152 | else if (a >= 'A' && a <= 'F') | |
3153 | return a - 'A' + 10; | |
c5aa993b | 3154 | else |
8a3fe4f8 | 3155 | error (_("Reply contains invalid hex digit %d"), a); |
c906108c SS |
3156 | } |
3157 | ||
30559e10 | 3158 | static int |
cfd77fa1 | 3159 | hex2bin (const char *hex, gdb_byte *bin, int count) |
30559e10 MS |
3160 | { |
3161 | int i; | |
3162 | ||
30559e10 MS |
3163 | for (i = 0; i < count; i++) |
3164 | { | |
3165 | if (hex[0] == 0 || hex[1] == 0) | |
3166 | { | |
3167 | /* Hex string is short, or of uneven length. | |
23860348 | 3168 | Return the count that has been converted so far. */ |
30559e10 MS |
3169 | return i; |
3170 | } | |
3171 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); | |
3172 | hex += 2; | |
3173 | } | |
3174 | return i; | |
3175 | } | |
3176 | ||
c906108c SS |
3177 | /* Convert number NIB to a hex digit. */ |
3178 | ||
3179 | static int | |
fba45db2 | 3180 | tohex (int nib) |
c906108c SS |
3181 | { |
3182 | if (nib < 10) | |
c5aa993b | 3183 | return '0' + nib; |
c906108c | 3184 | else |
c5aa993b | 3185 | return 'a' + nib - 10; |
c906108c | 3186 | } |
30559e10 MS |
3187 | |
3188 | static int | |
cfd77fa1 | 3189 | bin2hex (const gdb_byte *bin, char *hex, int count) |
30559e10 MS |
3190 | { |
3191 | int i; | |
23860348 | 3192 | /* May use a length, or a nul-terminated string as input. */ |
30559e10 | 3193 | if (count == 0) |
cfd77fa1 | 3194 | count = strlen ((char *) bin); |
30559e10 MS |
3195 | |
3196 | for (i = 0; i < count; i++) | |
3197 | { | |
3198 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
3199 | *hex++ = tohex (*bin++ & 0xf); | |
3200 | } | |
3201 | *hex = 0; | |
3202 | return i; | |
3203 | } | |
c906108c | 3204 | \f |
506fb367 DJ |
3205 | /* Check for the availability of vCont. This function should also check |
3206 | the response. */ | |
c906108c SS |
3207 | |
3208 | static void | |
6d820c5c | 3209 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 3210 | { |
2e9f7625 | 3211 | char *buf; |
6d820c5c | 3212 | |
2e9f7625 DJ |
3213 | strcpy (rs->buf, "vCont?"); |
3214 | putpkt (rs->buf); | |
6d820c5c | 3215 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3216 | buf = rs->buf; |
c906108c | 3217 | |
506fb367 DJ |
3218 | /* Make sure that the features we assume are supported. */ |
3219 | if (strncmp (buf, "vCont", 5) == 0) | |
3220 | { | |
3221 | char *p = &buf[5]; | |
3222 | int support_s, support_S, support_c, support_C; | |
3223 | ||
3224 | support_s = 0; | |
3225 | support_S = 0; | |
3226 | support_c = 0; | |
3227 | support_C = 0; | |
3228 | while (p && *p == ';') | |
3229 | { | |
3230 | p++; | |
3231 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
3232 | support_s = 1; | |
3233 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
3234 | support_S = 1; | |
3235 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
3236 | support_c = 1; | |
3237 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
3238 | support_C = 1; | |
3239 | ||
3240 | p = strchr (p, ';'); | |
3241 | } | |
c906108c | 3242 | |
506fb367 DJ |
3243 | /* If s, S, c, and C are not all supported, we can't use vCont. Clearing |
3244 | BUF will make packet_ok disable the packet. */ | |
3245 | if (!support_s || !support_S || !support_c || !support_C) | |
3246 | buf[0] = 0; | |
3247 | } | |
c906108c | 3248 | |
444abaca | 3249 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 3250 | } |
c906108c | 3251 | |
506fb367 DJ |
3252 | /* Resume the remote inferior by using a "vCont" packet. The thread |
3253 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
79d7f229 PA |
3254 | resumed thread should be single-stepped and/or signalled. If PTID |
3255 | equals minus_one_ptid, then all threads are resumed; the thread to | |
3256 | be stepped and/or signalled is given in the global INFERIOR_PTID. | |
3257 | This function returns non-zero iff it resumes the inferior. | |
44eaed12 | 3258 | |
506fb367 DJ |
3259 | This function issues a strict subset of all possible vCont commands at the |
3260 | moment. */ | |
44eaed12 | 3261 | |
506fb367 DJ |
3262 | static int |
3263 | remote_vcont_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
3264 | { | |
3265 | struct remote_state *rs = get_remote_state (); | |
82f73884 PA |
3266 | char *p; |
3267 | char *endp; | |
44eaed12 | 3268 | |
444abaca | 3269 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 3270 | remote_vcont_probe (rs); |
44eaed12 | 3271 | |
444abaca | 3272 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_DISABLE) |
6d820c5c | 3273 | return 0; |
44eaed12 | 3274 | |
82f73884 PA |
3275 | p = rs->buf; |
3276 | endp = rs->buf + get_remote_packet_size (); | |
3277 | ||
506fb367 DJ |
3278 | /* If we could generate a wider range of packets, we'd have to worry |
3279 | about overflowing BUF. Should there be a generic | |
3280 | "multi-part-packet" packet? */ | |
3281 | ||
79d7f229 | 3282 | if (ptid_equal (ptid, magic_null_ptid)) |
c906108c | 3283 | { |
79d7f229 PA |
3284 | /* MAGIC_NULL_PTID means that we don't have any active threads, |
3285 | so we don't have any TID numbers the inferior will | |
3286 | understand. Make sure to only send forms that do not specify | |
3287 | a TID. */ | |
506fb367 | 3288 | if (step && siggnal != TARGET_SIGNAL_0) |
82f73884 | 3289 | xsnprintf (p, endp - p, "vCont;S%02x", siggnal); |
506fb367 | 3290 | else if (step) |
82f73884 | 3291 | xsnprintf (p, endp - p, "vCont;s"); |
506fb367 | 3292 | else if (siggnal != TARGET_SIGNAL_0) |
82f73884 | 3293 | xsnprintf (p, endp - p, "vCont;C%02x", siggnal); |
506fb367 | 3294 | else |
82f73884 | 3295 | xsnprintf (p, endp - p, "vCont;c"); |
506fb367 | 3296 | } |
79d7f229 | 3297 | else if (ptid_equal (ptid, minus_one_ptid)) |
506fb367 DJ |
3298 | { |
3299 | /* Resume all threads, with preference for INFERIOR_PTID. */ | |
3300 | if (step && siggnal != TARGET_SIGNAL_0) | |
82f73884 PA |
3301 | { |
3302 | /* Step inferior_ptid with signal. */ | |
3303 | p += xsnprintf (p, endp - p, "vCont;S%02x:", siggnal); | |
3304 | p = write_ptid (p, endp, inferior_ptid); | |
3305 | /* And continue others. */ | |
3306 | p += xsnprintf (p, endp - p, ";c"); | |
3307 | } | |
506fb367 | 3308 | else if (step) |
82f73884 PA |
3309 | { |
3310 | /* Step inferior_ptid. */ | |
3311 | p += xsnprintf (p, endp - p, "vCont;s:"); | |
3312 | p = write_ptid (p, endp, inferior_ptid); | |
3313 | /* And continue others. */ | |
3314 | p += xsnprintf (p, endp - p, ";c"); | |
3315 | } | |
506fb367 | 3316 | else if (siggnal != TARGET_SIGNAL_0) |
82f73884 PA |
3317 | { |
3318 | /* Continue inferior_ptid with signal. */ | |
3319 | p += xsnprintf (p, endp - p, "vCont;C%02x:", siggnal); | |
3320 | p = write_ptid (p, endp, inferior_ptid); | |
3321 | /* And continue others. */ | |
3322 | p += xsnprintf (p, endp - p, ";c"); | |
3323 | } | |
506fb367 | 3324 | else |
82f73884 | 3325 | xsnprintf (p, endp - p, "vCont;c"); |
c906108c SS |
3326 | } |
3327 | else | |
506fb367 DJ |
3328 | { |
3329 | /* Scheduler locking; resume only PTID. */ | |
3330 | if (step && siggnal != TARGET_SIGNAL_0) | |
82f73884 PA |
3331 | { |
3332 | /* Step ptid with signal. */ | |
3333 | p += xsnprintf (p, endp - p, "vCont;S%02x:", siggnal); | |
3334 | p = write_ptid (p, endp, ptid); | |
3335 | } | |
506fb367 | 3336 | else if (step) |
82f73884 PA |
3337 | { |
3338 | /* Step ptid. */ | |
3339 | p += xsnprintf (p, endp - p, "vCont;s:"); | |
3340 | p = write_ptid (p, endp, ptid); | |
3341 | } | |
506fb367 | 3342 | else if (siggnal != TARGET_SIGNAL_0) |
82f73884 PA |
3343 | { |
3344 | /* Continue ptid with signal. */ | |
3345 | p += xsnprintf (p, endp - p, "vCont;C%02x:", siggnal); | |
3346 | p = write_ptid (p, endp, ptid); | |
3347 | } | |
506fb367 | 3348 | else |
82f73884 PA |
3349 | { |
3350 | /* Continue ptid. */ | |
3351 | p += xsnprintf (p, endp - p, "vCont;c:"); | |
3352 | p = write_ptid (p, endp, ptid); | |
3353 | } | |
506fb367 | 3354 | } |
c906108c | 3355 | |
82f73884 PA |
3356 | gdb_assert (strlen (rs->buf) < get_remote_packet_size ()); |
3357 | putpkt (rs->buf); | |
506fb367 DJ |
3358 | |
3359 | return 1; | |
c906108c | 3360 | } |
43ff13b4 | 3361 | |
506fb367 DJ |
3362 | /* Tell the remote machine to resume. */ |
3363 | ||
3364 | static enum target_signal last_sent_signal = TARGET_SIGNAL_0; | |
3365 | ||
3366 | static int last_sent_step; | |
3367 | ||
43ff13b4 | 3368 | static void |
506fb367 | 3369 | remote_resume (ptid_t ptid, int step, enum target_signal siggnal) |
43ff13b4 | 3370 | { |
d01949b6 | 3371 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 3372 | char *buf; |
43ff13b4 | 3373 | |
43ff13b4 JM |
3374 | last_sent_signal = siggnal; |
3375 | last_sent_step = step; | |
3376 | ||
89be2091 DJ |
3377 | /* Update the inferior on signals to silently pass, if they've changed. */ |
3378 | remote_pass_signals (); | |
3379 | ||
506fb367 DJ |
3380 | /* The vCont packet doesn't need to specify threads via Hc. */ |
3381 | if (remote_vcont_resume (ptid, step, siggnal)) | |
75c99385 | 3382 | goto done; |
506fb367 | 3383 | |
79d7f229 PA |
3384 | /* All other supported resume packets do use Hc, so set the continue |
3385 | thread. */ | |
3386 | if (ptid_equal (ptid, minus_one_ptid)) | |
3387 | set_continue_thread (any_thread_ptid); | |
506fb367 | 3388 | else |
79d7f229 | 3389 | set_continue_thread (ptid); |
506fb367 | 3390 | |
2e9f7625 | 3391 | buf = rs->buf; |
43ff13b4 JM |
3392 | if (siggnal != TARGET_SIGNAL_0) |
3393 | { | |
3394 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 3395 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 3396 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
3397 | buf[3] = '\0'; |
3398 | } | |
3399 | else | |
c5aa993b | 3400 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 3401 | |
44eaed12 | 3402 | putpkt (buf); |
43ff13b4 | 3403 | |
75c99385 | 3404 | done: |
2acceee2 JM |
3405 | /* We are about to start executing the inferior, let's register it |
3406 | with the event loop. NOTE: this is the one place where all the | |
3407 | execution commands end up. We could alternatively do this in each | |
23860348 | 3408 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
3409 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
3410 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 3411 | NOT asynchronously. */ |
362646f5 | 3412 | if (target_can_async_p ()) |
2acceee2 | 3413 | target_async (inferior_event_handler, 0); |
43ff13b4 | 3414 | } |
c906108c | 3415 | \f |
43ff13b4 JM |
3416 | |
3417 | /* Set up the signal handler for SIGINT, while the target is | |
23860348 | 3418 | executing, ovewriting the 'regular' SIGINT signal handler. */ |
43ff13b4 | 3419 | static void |
fba45db2 | 3420 | initialize_sigint_signal_handler (void) |
43ff13b4 | 3421 | { |
43ff13b4 JM |
3422 | signal (SIGINT, handle_remote_sigint); |
3423 | } | |
3424 | ||
23860348 | 3425 | /* Signal handler for SIGINT, while the target is executing. */ |
43ff13b4 | 3426 | static void |
fba45db2 | 3427 | handle_remote_sigint (int sig) |
43ff13b4 JM |
3428 | { |
3429 | signal (sig, handle_remote_sigint_twice); | |
43ff13b4 JM |
3430 | mark_async_signal_handler_wrapper (sigint_remote_token); |
3431 | } | |
3432 | ||
3433 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
3434 | sent once. It will take effect the second time that the user sends | |
23860348 | 3435 | a ^C. */ |
43ff13b4 | 3436 | static void |
fba45db2 | 3437 | handle_remote_sigint_twice (int sig) |
43ff13b4 | 3438 | { |
b803fb0f | 3439 | signal (sig, handle_remote_sigint); |
43ff13b4 JM |
3440 | mark_async_signal_handler_wrapper (sigint_remote_twice_token); |
3441 | } | |
3442 | ||
6426a772 | 3443 | /* Perform the real interruption of the target execution, in response |
23860348 | 3444 | to a ^C. */ |
c5aa993b | 3445 | static void |
fba45db2 | 3446 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
3447 | { |
3448 | if (remote_debug) | |
3449 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
3450 | ||
94cc34af | 3451 | target_stop (inferior_ptid); |
43ff13b4 JM |
3452 | } |
3453 | ||
3454 | /* Perform interrupt, if the first attempt did not succeed. Just give | |
23860348 | 3455 | up on the target alltogether. */ |
2df3850c | 3456 | void |
fba45db2 | 3457 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 3458 | { |
2df3850c JM |
3459 | if (remote_debug) |
3460 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt_twice called\n"); | |
b803fb0f DJ |
3461 | |
3462 | interrupt_query (); | |
43ff13b4 JM |
3463 | } |
3464 | ||
3465 | /* Reinstall the usual SIGINT handlers, after the target has | |
23860348 | 3466 | stopped. */ |
6426a772 JM |
3467 | static void |
3468 | cleanup_sigint_signal_handler (void *dummy) | |
43ff13b4 JM |
3469 | { |
3470 | signal (SIGINT, handle_sigint); | |
43ff13b4 JM |
3471 | } |
3472 | ||
c906108c SS |
3473 | /* Send ^C to target to halt it. Target will respond, and send us a |
3474 | packet. */ | |
507f3c78 | 3475 | static void (*ofunc) (int); |
c906108c | 3476 | |
7a292a7a SS |
3477 | /* The command line interface's stop routine. This function is installed |
3478 | as a signal handler for SIGINT. The first time a user requests a | |
3479 | stop, we call remote_stop to send a break or ^C. If there is no | |
3480 | response from the target (it didn't stop when the user requested it), | |
23860348 | 3481 | we ask the user if he'd like to detach from the target. */ |
c906108c | 3482 | static void |
fba45db2 | 3483 | remote_interrupt (int signo) |
c906108c | 3484 | { |
23860348 | 3485 | /* If this doesn't work, try more severe steps. */ |
7a292a7a SS |
3486 | signal (signo, remote_interrupt_twice); |
3487 | ||
b803fb0f | 3488 | gdb_call_async_signal_handler (sigint_remote_token, 1); |
7a292a7a SS |
3489 | } |
3490 | ||
3491 | /* The user typed ^C twice. */ | |
3492 | ||
3493 | static void | |
fba45db2 | 3494 | remote_interrupt_twice (int signo) |
7a292a7a SS |
3495 | { |
3496 | signal (signo, ofunc); | |
b803fb0f | 3497 | gdb_call_async_signal_handler (sigint_remote_twice_token, 1); |
c906108c SS |
3498 | signal (signo, remote_interrupt); |
3499 | } | |
7a292a7a SS |
3500 | |
3501 | /* This is the generic stop called via the target vector. When a target | |
3502 | interrupt is requested, either by the command line or the GUI, we | |
23860348 | 3503 | will eventually end up here. */ |
c906108c | 3504 | static void |
94cc34af | 3505 | remote_stop (ptid_t ptid) |
c906108c | 3506 | { |
7a292a7a SS |
3507 | /* Send a break or a ^C, depending on user preference. */ |
3508 | if (remote_debug) | |
0f71a2f6 | 3509 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 3510 | |
7a292a7a | 3511 | if (remote_break) |
2cd58942 | 3512 | serial_send_break (remote_desc); |
c906108c | 3513 | else |
2cd58942 | 3514 | serial_write (remote_desc, "\003", 1); |
c906108c SS |
3515 | } |
3516 | ||
3517 | /* Ask the user what to do when an interrupt is received. */ | |
3518 | ||
3519 | static void | |
fba45db2 | 3520 | interrupt_query (void) |
c906108c SS |
3521 | { |
3522 | target_terminal_ours (); | |
3523 | ||
3524 | if (query ("Interrupted while waiting for the program.\n\ | |
3525 | Give up (and stop debugging it)? ")) | |
3526 | { | |
3527 | target_mourn_inferior (); | |
b803fb0f | 3528 | signal (SIGINT, handle_sigint); |
315a522e | 3529 | deprecated_throw_reason (RETURN_QUIT); |
c906108c SS |
3530 | } |
3531 | ||
3532 | target_terminal_inferior (); | |
3533 | } | |
3534 | ||
6426a772 JM |
3535 | /* Enable/disable target terminal ownership. Most targets can use |
3536 | terminal groups to control terminal ownership. Remote targets are | |
3537 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 3538 | is required. */ |
6426a772 JM |
3539 | |
3540 | static void | |
75c99385 | 3541 | remote_terminal_inferior (void) |
6426a772 | 3542 | { |
c6ebd6cf | 3543 | if (!target_async_permitted) |
75c99385 PA |
3544 | /* Nothing to do. */ |
3545 | return; | |
3546 | ||
6426a772 JM |
3547 | /* FIXME: cagney/1999-09-27: Shouldn't need to test for |
3548 | sync_execution here. This function should only be called when | |
3549 | GDB is resuming the inferior in the forground. A background | |
3550 | resume (``run&'') should leave GDB in control of the terminal and | |
23860348 | 3551 | consequently should not call this code. */ |
6426a772 JM |
3552 | if (!sync_execution) |
3553 | return; | |
3554 | /* FIXME: cagney/1999-09-27: Closely related to the above. Make | |
3555 | calls target_terminal_*() idenpotent. The event-loop GDB talking | |
3556 | to an asynchronous target with a synchronous command calls this | |
3557 | function from both event-top.c and infrun.c/infcmd.c. Once GDB | |
3558 | stops trying to transfer the terminal to the target when it | |
3559 | shouldn't this guard can go away. */ | |
3560 | if (!remote_async_terminal_ours_p) | |
3561 | return; | |
3562 | delete_file_handler (input_fd); | |
3563 | remote_async_terminal_ours_p = 0; | |
3564 | initialize_sigint_signal_handler (); | |
3565 | /* NOTE: At this point we could also register our selves as the | |
3566 | recipient of all input. Any characters typed could then be | |
23860348 | 3567 | passed on down to the target. */ |
6426a772 JM |
3568 | } |
3569 | ||
3570 | static void | |
75c99385 | 3571 | remote_terminal_ours (void) |
6426a772 | 3572 | { |
c6ebd6cf | 3573 | if (!target_async_permitted) |
75c99385 PA |
3574 | /* Nothing to do. */ |
3575 | return; | |
3576 | ||
3577 | /* See FIXME in remote_terminal_inferior. */ | |
6426a772 JM |
3578 | if (!sync_execution) |
3579 | return; | |
75c99385 | 3580 | /* See FIXME in remote_terminal_inferior. */ |
6426a772 JM |
3581 | if (remote_async_terminal_ours_p) |
3582 | return; | |
3583 | cleanup_sigint_signal_handler (NULL); | |
3584 | add_file_handler (input_fd, stdin_event_handler, 0); | |
3585 | remote_async_terminal_ours_p = 1; | |
3586 | } | |
3587 | ||
c906108c | 3588 | void |
917317f4 | 3589 | remote_console_output (char *msg) |
c906108c SS |
3590 | { |
3591 | char *p; | |
3592 | ||
c5aa993b | 3593 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
3594 | { |
3595 | char tb[2]; | |
3596 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3597 | tb[0] = c; | |
3598 | tb[1] = 0; | |
43ff13b4 | 3599 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 3600 | } |
917317f4 | 3601 | gdb_flush (gdb_stdtarg); |
c906108c SS |
3602 | } |
3603 | ||
0f71a2f6 | 3604 | /* Wait until the remote machine stops, then return, |
79d7f229 | 3605 | storing status in STATUS just as `wait' would. */ |
c906108c | 3606 | |
39f77062 KB |
3607 | static ptid_t |
3608 | remote_wait (ptid_t ptid, struct target_waitstatus *status) | |
c906108c | 3609 | { |
d01949b6 | 3610 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 3611 | struct remote_arch_state *rsa = get_remote_arch_state (); |
82f73884 | 3612 | ptid_t event_ptid = null_ptid; |
3c3bea1c | 3613 | ULONGEST addr; |
cfa9d6d9 | 3614 | int solibs_changed = 0; |
c906108c SS |
3615 | |
3616 | status->kind = TARGET_WAITKIND_EXITED; | |
3617 | status->value.integer = 0; | |
3618 | ||
43ff13b4 JM |
3619 | while (1) |
3620 | { | |
2e9f7625 | 3621 | char *buf, *p; |
c5aa993b | 3622 | |
2d717e4f DJ |
3623 | if (rs->cached_wait_status) |
3624 | /* Use the cached wait status, but only once. */ | |
3625 | rs->cached_wait_status = 0; | |
3626 | else | |
9fa2223d | 3627 | { |
2d717e4f | 3628 | if (!target_is_async_p ()) |
9fa2223d | 3629 | { |
2d717e4f DJ |
3630 | ofunc = signal (SIGINT, remote_interrupt); |
3631 | /* If the user hit C-c before this packet, or between packets, | |
3632 | pretend that it was hit right here. */ | |
3633 | if (quit_flag) | |
3634 | { | |
3635 | quit_flag = 0; | |
3636 | remote_interrupt (SIGINT); | |
3637 | } | |
9fa2223d | 3638 | } |
2d717e4f DJ |
3639 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
3640 | _never_ wait for ever -> test on target_is_async_p(). | |
3641 | However, before we do that we need to ensure that the caller | |
3642 | knows how to take the target into/out of async mode. */ | |
3643 | getpkt (&rs->buf, &rs->buf_size, wait_forever_enabled_p); | |
3644 | if (!target_is_async_p ()) | |
3645 | signal (SIGINT, ofunc); | |
9fa2223d | 3646 | } |
43ff13b4 | 3647 | |
2e9f7625 DJ |
3648 | buf = rs->buf; |
3649 | ||
75c99385 PA |
3650 | remote_stopped_by_watchpoint_p = 0; |
3651 | ||
43ff13b4 JM |
3652 | switch (buf[0]) |
3653 | { | |
23860348 | 3654 | case 'E': /* Error of some sort. */ |
20b4711e DJ |
3655 | /* We're out of sync with the target now. Did it continue or not? |
3656 | Not is more likely, so report a stop. */ | |
8a3fe4f8 | 3657 | warning (_("Remote failure reply: %s"), buf); |
20b4711e DJ |
3658 | status->kind = TARGET_WAITKIND_STOPPED; |
3659 | status->value.sig = TARGET_SIGNAL_0; | |
3660 | goto got_status; | |
23860348 | 3661 | case 'F': /* File-I/O request. */ |
449092f6 CV |
3662 | remote_fileio_request (buf); |
3663 | continue; | |
23860348 | 3664 | case 'T': /* Status with PC, SP, FP, ... */ |
43ff13b4 | 3665 | { |
cfd77fa1 | 3666 | gdb_byte regs[MAX_REGISTER_SIZE]; |
43ff13b4 | 3667 | |
23860348 | 3668 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
43ff13b4 | 3669 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where |
c5aa993b JM |
3670 | ss = signal number |
3671 | n... = register number | |
3672 | r... = register contents | |
3673 | */ | |
43ff13b4 JM |
3674 | p = &buf[3]; /* after Txx */ |
3675 | ||
3676 | while (*p) | |
3677 | { | |
cfd77fa1 | 3678 | char *p1; |
43ff13b4 | 3679 | char *p_temp; |
6c3f2dbf | 3680 | int fieldsize; |
75c99385 | 3681 | LONGEST pnum = 0; |
43ff13b4 | 3682 | |
23860348 MS |
3683 | /* If the packet contains a register number, save it |
3684 | in pnum and set p1 to point to the character | |
3685 | following it. Otherwise p1 points to p. */ | |
3c3bea1c | 3686 | |
75c99385 PA |
3687 | /* If this packet is an awatch packet, don't parse the |
3688 | 'a' as a register number. */ | |
802188a7 | 3689 | |
cfa9d6d9 | 3690 | if (strncmp (p, "awatch", strlen("awatch")) != 0) |
3c3bea1c | 3691 | { |
75c99385 | 3692 | /* Read the ``P'' register number. */ |
3c3bea1c | 3693 | pnum = strtol (p, &p_temp, 16); |
cfd77fa1 | 3694 | p1 = p_temp; |
3c3bea1c | 3695 | } |
802188a7 | 3696 | else |
3c3bea1c | 3697 | p1 = p; |
43ff13b4 | 3698 | |
23860348 | 3699 | if (p1 == p) /* No register number present here. */ |
43ff13b4 | 3700 | { |
cfd77fa1 | 3701 | p1 = strchr (p, ':'); |
43ff13b4 | 3702 | if (p1 == NULL) |
8a3fe4f8 AC |
3703 | error (_("Malformed packet(a) (missing colon): %s\n\ |
3704 | Packet: '%s'\n"), | |
3fcb8548 | 3705 | p, buf); |
3c3bea1c | 3706 | if (strncmp (p, "thread", p1 - p) == 0) |
82f73884 | 3707 | event_ptid = read_ptid (++p1, &p); |
3c3bea1c GS |
3708 | else if ((strncmp (p, "watch", p1 - p) == 0) |
3709 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
3710 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
3711 | { | |
3712 | remote_stopped_by_watchpoint_p = 1; | |
3713 | p = unpack_varlen_hex (++p1, &addr); | |
3714 | remote_watch_data_address = (CORE_ADDR)addr; | |
3715 | } | |
cfa9d6d9 DJ |
3716 | else if (strncmp (p, "library", p1 - p) == 0) |
3717 | { | |
3718 | p1++; | |
3719 | p_temp = p1; | |
3720 | while (*p_temp && *p_temp != ';') | |
3721 | p_temp++; | |
3722 | ||
3723 | solibs_changed = 1; | |
3724 | p = p_temp; | |
3725 | } | |
3c3bea1c GS |
3726 | else |
3727 | { | |
3728 | /* Silently skip unknown optional info. */ | |
cfd77fa1 | 3729 | p_temp = strchr (p1 + 1, ';'); |
3c3bea1c GS |
3730 | if (p_temp) |
3731 | p = p_temp; | |
3732 | } | |
43ff13b4 JM |
3733 | } |
3734 | else | |
3735 | { | |
ea9c271d | 3736 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); |
43ff13b4 | 3737 | p = p1; |
75c99385 | 3738 | |
b4f62b57 | 3739 | if (*p != ':') |
8a3fe4f8 AC |
3740 | error (_("Malformed packet(b) (missing colon): %s\n\ |
3741 | Packet: '%s'\n"), | |
3fcb8548 | 3742 | p, buf); |
b4f62b57 | 3743 | ++p; |
43ff13b4 | 3744 | |
ad10f812 | 3745 | if (reg == NULL) |
75c99385 | 3746 | error (_("Remote sent bad register number %s: %s\n\ |
8a3fe4f8 | 3747 | Packet: '%s'\n"), |
75c99385 | 3748 | phex_nz (pnum, 0), p, buf); |
43ff13b4 | 3749 | |
cfd77fa1 | 3750 | fieldsize = hex2bin (p, regs, |
1cf3db46 | 3751 | register_size (target_gdbarch, |
23860348 | 3752 | reg->regnum)); |
6c3f2dbf | 3753 | p += 2 * fieldsize; |
1cf3db46 | 3754 | if (fieldsize < register_size (target_gdbarch, |
23860348 | 3755 | reg->regnum)) |
8a3fe4f8 | 3756 | warning (_("Remote reply is too short: %s"), buf); |
594f7785 UW |
3757 | regcache_raw_supply (get_current_regcache (), |
3758 | reg->regnum, regs); | |
43ff13b4 JM |
3759 | } |
3760 | ||
b4f62b57 | 3761 | if (*p != ';') |
8a3fe4f8 | 3762 | error (_("Remote register badly formatted: %s\nhere: %s"), |
0a2cfde4 | 3763 | buf, p); |
b4f62b57 | 3764 | ++p; |
43ff13b4 JM |
3765 | } |
3766 | } | |
3767 | /* fall through */ | |
23860348 | 3768 | case 'S': /* Old style status, just signal only. */ |
cfa9d6d9 DJ |
3769 | if (solibs_changed) |
3770 | status->kind = TARGET_WAITKIND_LOADED; | |
3771 | else | |
3772 | { | |
3773 | status->kind = TARGET_WAITKIND_STOPPED; | |
3774 | status->value.sig = (enum target_signal) | |
3775 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3776 | } | |
43ff13b4 | 3777 | goto got_status; |
23860348 | 3778 | case 'W': /* Target exited. */ |
82f73884 | 3779 | case 'X': |
43ff13b4 | 3780 | { |
82f73884 PA |
3781 | char *p; |
3782 | int pid; | |
3783 | ULONGEST value; | |
3784 | ||
3785 | /* GDB used to accept only 2 hex chars here. Stubs should | |
3786 | only send more if they detect GDB supports | |
3787 | multi-process support. */ | |
3788 | p = unpack_varlen_hex (&buf[1], &value); | |
3789 | ||
3790 | if (buf[0] == 'W') | |
3791 | { | |
3792 | /* The remote process exited. */ | |
3793 | status->kind = TARGET_WAITKIND_EXITED; | |
3794 | status->value.integer = value; | |
3795 | } | |
3796 | else | |
3797 | { | |
3798 | /* The remote process exited with a signal. */ | |
3799 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
3800 | status->value.sig = (enum target_signal) value; | |
3801 | } | |
3802 | ||
3803 | /* If no process is specified, assume inferior_ptid. */ | |
3804 | pid = ptid_get_pid (inferior_ptid); | |
3805 | if (*p == '\0') | |
3806 | ; | |
3807 | else if (*p == ';') | |
3808 | { | |
3809 | p++; | |
3810 | ||
3811 | if (p == '\0') | |
3812 | ; | |
3813 | else if (strncmp (p, | |
3814 | "process:", sizeof ("process:") - 1) == 0) | |
3815 | { | |
3816 | ULONGEST upid; | |
3817 | p += sizeof ("process:") - 1; | |
3818 | unpack_varlen_hex (p, &upid); | |
3819 | pid = upid; | |
3820 | } | |
3821 | else | |
3822 | error (_("unknown stop reply packet: %s"), buf); | |
3823 | } | |
3824 | else | |
3825 | error (_("unknown stop reply packet: %s"), buf); | |
3826 | event_ptid = ptid_build (pid, 0, 0); | |
43ff13b4 JM |
3827 | goto got_status; |
3828 | } | |
23860348 | 3829 | case 'O': /* Console output. */ |
43ff13b4 | 3830 | remote_console_output (buf + 1); |
75c99385 PA |
3831 | if (target_can_async_p ()) |
3832 | { | |
3833 | /* Return immediately to the event loop. The event loop | |
3834 | will still be waiting on the inferior afterwards. */ | |
3835 | status->kind = TARGET_WAITKIND_IGNORE; | |
3836 | goto got_status; | |
3837 | } | |
3838 | else | |
3839 | continue; | |
43ff13b4 JM |
3840 | case '\0': |
3841 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3842 | { | |
3843 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3844 | the remote system doesn't support it. */ |
43ff13b4 JM |
3845 | target_terminal_ours_for_output (); |
3846 | printf_filtered | |
3847 | ("Can't send signals to this remote system. %s not sent.\n", | |
3848 | target_signal_to_name (last_sent_signal)); | |
3849 | last_sent_signal = TARGET_SIGNAL_0; | |
3850 | target_terminal_inferior (); | |
3851 | ||
3852 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3853 | putpkt ((char *) buf); | |
3854 | continue; | |
3855 | } | |
3856 | /* else fallthrough */ | |
3857 | default: | |
8a3fe4f8 | 3858 | warning (_("Invalid remote reply: %s"), buf); |
43ff13b4 JM |
3859 | continue; |
3860 | } | |
3861 | } | |
c5aa993b | 3862 | got_status: |
82f73884 PA |
3863 | if (status->kind == TARGET_WAITKIND_EXITED |
3864 | || status->kind == TARGET_WAITKIND_SIGNALLED) | |
43ff13b4 | 3865 | { |
82f73884 PA |
3866 | int pid = ptid_get_pid (event_ptid); |
3867 | delete_inferior (pid); | |
3868 | } | |
3869 | else | |
3870 | { | |
3871 | if (!ptid_equal (event_ptid, null_ptid)) | |
3872 | record_currthread (event_ptid); | |
3873 | else | |
3874 | event_ptid = inferior_ptid; | |
43ff13b4 | 3875 | } |
79d7f229 | 3876 | |
82f73884 | 3877 | return event_ptid; |
43ff13b4 JM |
3878 | } |
3879 | ||
74ca34ce | 3880 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 3881 | |
b96ec7ac | 3882 | static int |
56be3814 | 3883 | fetch_register_using_p (struct regcache *regcache, struct packet_reg *reg) |
b96ec7ac AC |
3884 | { |
3885 | struct remote_state *rs = get_remote_state (); | |
2e9f7625 | 3886 | char *buf, *p; |
b96ec7ac AC |
3887 | char regp[MAX_REGISTER_SIZE]; |
3888 | int i; | |
3889 | ||
74ca34ce DJ |
3890 | if (remote_protocol_packets[PACKET_p].support == PACKET_DISABLE) |
3891 | return 0; | |
3892 | ||
3893 | if (reg->pnum == -1) | |
3894 | return 0; | |
3895 | ||
2e9f7625 | 3896 | p = rs->buf; |
fcad0fa4 | 3897 | *p++ = 'p'; |
74ca34ce | 3898 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 3899 | *p++ = '\0'; |
6d820c5c | 3900 | remote_send (&rs->buf, &rs->buf_size); |
3f9a994c | 3901 | |
2e9f7625 DJ |
3902 | buf = rs->buf; |
3903 | ||
74ca34ce DJ |
3904 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_p])) |
3905 | { | |
3906 | case PACKET_OK: | |
3907 | break; | |
3908 | case PACKET_UNKNOWN: | |
3909 | return 0; | |
3910 | case PACKET_ERROR: | |
3911 | error (_("Could not fetch register \"%s\""), | |
4a22f64d | 3912 | gdbarch_register_name (get_regcache_arch (regcache), reg->regnum)); |
74ca34ce | 3913 | } |
3f9a994c JB |
3914 | |
3915 | /* If this register is unfetchable, tell the regcache. */ | |
3916 | if (buf[0] == 'x') | |
8480adf2 | 3917 | { |
56be3814 | 3918 | regcache_raw_supply (regcache, reg->regnum, NULL); |
8480adf2 | 3919 | return 1; |
b96ec7ac | 3920 | } |
b96ec7ac | 3921 | |
3f9a994c JB |
3922 | /* Otherwise, parse and supply the value. */ |
3923 | p = buf; | |
3924 | i = 0; | |
3925 | while (p[0] != 0) | |
3926 | { | |
3927 | if (p[1] == 0) | |
74ca34ce | 3928 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
3929 | |
3930 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3931 | p += 2; | |
3932 | } | |
56be3814 | 3933 | regcache_raw_supply (regcache, reg->regnum, regp); |
3f9a994c | 3934 | return 1; |
b96ec7ac AC |
3935 | } |
3936 | ||
74ca34ce DJ |
3937 | /* Fetch the registers included in the target's 'g' packet. */ |
3938 | ||
29709017 DJ |
3939 | static int |
3940 | send_g_packet (void) | |
c906108c | 3941 | { |
d01949b6 | 3942 | struct remote_state *rs = get_remote_state (); |
74ca34ce | 3943 | int i, buf_len; |
c906108c | 3944 | char *p; |
74ca34ce | 3945 | char *regs; |
c906108c | 3946 | |
74ca34ce DJ |
3947 | sprintf (rs->buf, "g"); |
3948 | remote_send (&rs->buf, &rs->buf_size); | |
c906108c | 3949 | |
29709017 DJ |
3950 | /* We can get out of synch in various cases. If the first character |
3951 | in the buffer is not a hex character, assume that has happened | |
3952 | and try to fetch another packet to read. */ | |
3953 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
3954 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
3955 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
3956 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
3957 | { | |
3958 | if (remote_debug) | |
3959 | fprintf_unfiltered (gdb_stdlog, | |
3960 | "Bad register packet; fetching a new packet\n"); | |
3961 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3962 | } | |
3963 | ||
74ca34ce DJ |
3964 | buf_len = strlen (rs->buf); |
3965 | ||
3966 | /* Sanity check the received packet. */ | |
3967 | if (buf_len % 2 != 0) | |
3968 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf); | |
29709017 DJ |
3969 | |
3970 | return buf_len / 2; | |
3971 | } | |
3972 | ||
3973 | static void | |
56be3814 | 3974 | process_g_packet (struct regcache *regcache) |
29709017 | 3975 | { |
4a22f64d | 3976 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
29709017 DJ |
3977 | struct remote_state *rs = get_remote_state (); |
3978 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
3979 | int i, buf_len; | |
3980 | char *p; | |
3981 | char *regs; | |
3982 | ||
3983 | buf_len = strlen (rs->buf); | |
3984 | ||
3985 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce DJ |
3986 | if (buf_len > 2 * rsa->sizeof_g_packet) |
3987 | error (_("Remote 'g' packet reply is too long: %s"), rs->buf); | |
3988 | ||
3989 | /* Save the size of the packet sent to us by the target. It is used | |
3990 | as a heuristic when determining the max size of packets that the | |
3991 | target can safely receive. */ | |
3992 | if (rsa->actual_register_packet_size == 0) | |
3993 | rsa->actual_register_packet_size = buf_len; | |
3994 | ||
3995 | /* If this is smaller than we guessed the 'g' packet would be, | |
3996 | update our records. A 'g' reply that doesn't include a register's | |
3997 | value implies either that the register is not available, or that | |
3998 | the 'p' packet must be used. */ | |
3999 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 4000 | { |
74ca34ce DJ |
4001 | rsa->sizeof_g_packet = buf_len / 2; |
4002 | ||
4a22f64d | 4003 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 4004 | { |
74ca34ce DJ |
4005 | if (rsa->regs[i].pnum == -1) |
4006 | continue; | |
4007 | ||
4008 | if (rsa->regs[i].offset >= rsa->sizeof_g_packet) | |
4009 | rsa->regs[i].in_g_packet = 0; | |
b96ec7ac | 4010 | else |
74ca34ce | 4011 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 4012 | } |
74ca34ce | 4013 | } |
b323314b | 4014 | |
74ca34ce | 4015 | regs = alloca (rsa->sizeof_g_packet); |
c906108c SS |
4016 | |
4017 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 4018 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 4019 | |
c906108c SS |
4020 | /* Reply describes registers byte by byte, each byte encoded as two |
4021 | hex characters. Suck them all up, then supply them to the | |
4022 | register cacheing/storage mechanism. */ | |
4023 | ||
74ca34ce | 4024 | p = rs->buf; |
ea9c271d | 4025 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 4026 | { |
74ca34ce DJ |
4027 | if (p[0] == 0 || p[1] == 0) |
4028 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
4029 | internal_error (__FILE__, __LINE__, | |
4030 | "unexpected end of 'g' packet reply"); | |
4031 | ||
c906108c | 4032 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 4033 | regs[i] = 0; /* 'x' */ |
c906108c SS |
4034 | else |
4035 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
4036 | p += 2; | |
4037 | } | |
4038 | ||
ad10f812 | 4039 | { |
b323314b | 4040 | int i; |
4a22f64d | 4041 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
ad10f812 | 4042 | { |
ea9c271d | 4043 | struct packet_reg *r = &rsa->regs[i]; |
b323314b AC |
4044 | if (r->in_g_packet) |
4045 | { | |
74ca34ce DJ |
4046 | if (r->offset * 2 >= strlen (rs->buf)) |
4047 | /* This shouldn't happen - we adjusted in_g_packet above. */ | |
4048 | internal_error (__FILE__, __LINE__, | |
4049 | "unexpected end of 'g' packet reply"); | |
4050 | else if (rs->buf[r->offset * 2] == 'x') | |
8ccc1287 | 4051 | { |
74ca34ce | 4052 | gdb_assert (r->offset * 2 < strlen (rs->buf)); |
8ccc1287 AC |
4053 | /* The register isn't available, mark it as such (at |
4054 | the same time setting the value to zero). */ | |
56be3814 | 4055 | regcache_raw_supply (regcache, r->regnum, NULL); |
8ccc1287 AC |
4056 | } |
4057 | else | |
56be3814 | 4058 | regcache_raw_supply (regcache, r->regnum, |
8ccc1287 | 4059 | regs + r->offset); |
b323314b | 4060 | } |
ad10f812 AC |
4061 | } |
4062 | } | |
c906108c SS |
4063 | } |
4064 | ||
29709017 | 4065 | static void |
56be3814 | 4066 | fetch_registers_using_g (struct regcache *regcache) |
29709017 DJ |
4067 | { |
4068 | send_g_packet (); | |
56be3814 | 4069 | process_g_packet (regcache); |
29709017 DJ |
4070 | } |
4071 | ||
74ca34ce | 4072 | static void |
56be3814 | 4073 | remote_fetch_registers (struct regcache *regcache, int regnum) |
74ca34ce DJ |
4074 | { |
4075 | struct remote_state *rs = get_remote_state (); | |
4076 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
4077 | int i; | |
4078 | ||
79d7f229 | 4079 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
4080 | |
4081 | if (regnum >= 0) | |
4082 | { | |
4083 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
4084 | gdb_assert (reg != NULL); | |
4085 | ||
4086 | /* If this register might be in the 'g' packet, try that first - | |
4087 | we are likely to read more than one register. If this is the | |
4088 | first 'g' packet, we might be overly optimistic about its | |
4089 | contents, so fall back to 'p'. */ | |
4090 | if (reg->in_g_packet) | |
4091 | { | |
56be3814 | 4092 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
4093 | if (reg->in_g_packet) |
4094 | return; | |
4095 | } | |
4096 | ||
56be3814 | 4097 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
4098 | return; |
4099 | ||
4100 | /* This register is not available. */ | |
56be3814 | 4101 | regcache_raw_supply (regcache, reg->regnum, NULL); |
74ca34ce DJ |
4102 | |
4103 | return; | |
4104 | } | |
4105 | ||
56be3814 | 4106 | fetch_registers_using_g (regcache); |
74ca34ce | 4107 | |
4a22f64d | 4108 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 4109 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 4110 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
4111 | { |
4112 | /* This register is not available. */ | |
56be3814 | 4113 | regcache_raw_supply (regcache, i, NULL); |
74ca34ce DJ |
4114 | } |
4115 | } | |
4116 | ||
c906108c SS |
4117 | /* Prepare to store registers. Since we may send them all (using a |
4118 | 'G' request), we have to read out the ones we don't want to change | |
4119 | first. */ | |
4120 | ||
c5aa993b | 4121 | static void |
316f2060 | 4122 | remote_prepare_to_store (struct regcache *regcache) |
c906108c | 4123 | { |
ea9c271d | 4124 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cf0e1e0d | 4125 | int i; |
cfd77fa1 | 4126 | gdb_byte buf[MAX_REGISTER_SIZE]; |
cf0e1e0d | 4127 | |
c906108c | 4128 | /* Make sure the entire registers array is valid. */ |
444abaca | 4129 | switch (remote_protocol_packets[PACKET_P].support) |
5a2468f5 JM |
4130 | { |
4131 | case PACKET_DISABLE: | |
4132 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 4133 | /* Make sure all the necessary registers are cached. */ |
4a22f64d | 4134 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
ea9c271d | 4135 | if (rsa->regs[i].in_g_packet) |
316f2060 | 4136 | regcache_raw_read (regcache, rsa->regs[i].regnum, buf); |
5a2468f5 JM |
4137 | break; |
4138 | case PACKET_ENABLE: | |
4139 | break; | |
4140 | } | |
4141 | } | |
4142 | ||
ad10f812 | 4143 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 4144 | packet was not recognized. */ |
5a2468f5 JM |
4145 | |
4146 | static int | |
56be3814 | 4147 | store_register_using_P (const struct regcache *regcache, struct packet_reg *reg) |
5a2468f5 | 4148 | { |
4a22f64d | 4149 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
d01949b6 | 4150 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 4151 | struct remote_arch_state *rsa = get_remote_arch_state (); |
5a2468f5 | 4152 | /* Try storing a single register. */ |
6d820c5c | 4153 | char *buf = rs->buf; |
cfd77fa1 | 4154 | gdb_byte regp[MAX_REGISTER_SIZE]; |
5a2468f5 | 4155 | char *p; |
5a2468f5 | 4156 | |
74ca34ce DJ |
4157 | if (remote_protocol_packets[PACKET_P].support == PACKET_DISABLE) |
4158 | return 0; | |
4159 | ||
4160 | if (reg->pnum == -1) | |
4161 | return 0; | |
4162 | ||
ea9c271d | 4163 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 4164 | p = buf + strlen (buf); |
56be3814 | 4165 | regcache_raw_collect (regcache, reg->regnum, regp); |
4a22f64d | 4166 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
6d820c5c | 4167 | remote_send (&rs->buf, &rs->buf_size); |
5a2468f5 | 4168 | |
74ca34ce DJ |
4169 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
4170 | { | |
4171 | case PACKET_OK: | |
4172 | return 1; | |
4173 | case PACKET_ERROR: | |
4174 | error (_("Could not write register \"%s\""), | |
4a22f64d | 4175 | gdbarch_register_name (gdbarch, reg->regnum)); |
74ca34ce DJ |
4176 | case PACKET_UNKNOWN: |
4177 | return 0; | |
4178 | default: | |
4179 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
4180 | } | |
c906108c SS |
4181 | } |
4182 | ||
23860348 MS |
4183 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
4184 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
4185 | |
4186 | static void | |
56be3814 | 4187 | store_registers_using_G (const struct regcache *regcache) |
c906108c | 4188 | { |
d01949b6 | 4189 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 4190 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cfd77fa1 | 4191 | gdb_byte *regs; |
c906108c SS |
4192 | char *p; |
4193 | ||
193cb69f AC |
4194 | /* Extract all the registers in the regcache copying them into a |
4195 | local buffer. */ | |
4196 | { | |
b323314b | 4197 | int i; |
ea9c271d DJ |
4198 | regs = alloca (rsa->sizeof_g_packet); |
4199 | memset (regs, 0, rsa->sizeof_g_packet); | |
4a22f64d | 4200 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
193cb69f | 4201 | { |
ea9c271d | 4202 | struct packet_reg *r = &rsa->regs[i]; |
b323314b | 4203 | if (r->in_g_packet) |
56be3814 | 4204 | regcache_raw_collect (regcache, r->regnum, regs + r->offset); |
193cb69f AC |
4205 | } |
4206 | } | |
c906108c SS |
4207 | |
4208 | /* Command describes registers byte by byte, | |
4209 | each byte encoded as two hex characters. */ | |
6d820c5c | 4210 | p = rs->buf; |
193cb69f | 4211 | *p++ = 'G'; |
74ca34ce DJ |
4212 | /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets |
4213 | updated. */ | |
4214 | bin2hex (regs, p, rsa->sizeof_g_packet); | |
6d820c5c | 4215 | remote_send (&rs->buf, &rs->buf_size); |
c906108c | 4216 | } |
74ca34ce DJ |
4217 | |
4218 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
4219 | of the register cache buffer. FIXME: ignores errors. */ | |
4220 | ||
4221 | static void | |
56be3814 | 4222 | remote_store_registers (struct regcache *regcache, int regnum) |
74ca34ce DJ |
4223 | { |
4224 | struct remote_state *rs = get_remote_state (); | |
4225 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
4226 | int i; | |
4227 | ||
79d7f229 | 4228 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
4229 | |
4230 | if (regnum >= 0) | |
4231 | { | |
4232 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
4233 | gdb_assert (reg != NULL); | |
4234 | ||
4235 | /* Always prefer to store registers using the 'P' packet if | |
4236 | possible; we often change only a small number of registers. | |
4237 | Sometimes we change a larger number; we'd need help from a | |
4238 | higher layer to know to use 'G'. */ | |
56be3814 | 4239 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
4240 | return; |
4241 | ||
4242 | /* For now, don't complain if we have no way to write the | |
4243 | register. GDB loses track of unavailable registers too | |
4244 | easily. Some day, this may be an error. We don't have | |
4245 | any way to read the register, either... */ | |
4246 | if (!reg->in_g_packet) | |
4247 | return; | |
4248 | ||
56be3814 | 4249 | store_registers_using_G (regcache); |
74ca34ce DJ |
4250 | return; |
4251 | } | |
4252 | ||
56be3814 | 4253 | store_registers_using_G (regcache); |
74ca34ce | 4254 | |
4a22f64d | 4255 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 4256 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 4257 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
4258 | /* See above for why we do not issue an error here. */ |
4259 | continue; | |
4260 | } | |
c906108c SS |
4261 | \f |
4262 | ||
4263 | /* Return the number of hex digits in num. */ | |
4264 | ||
4265 | static int | |
fba45db2 | 4266 | hexnumlen (ULONGEST num) |
c906108c SS |
4267 | { |
4268 | int i; | |
4269 | ||
4270 | for (i = 0; num != 0; i++) | |
4271 | num >>= 4; | |
4272 | ||
4273 | return max (i, 1); | |
4274 | } | |
4275 | ||
2df3850c | 4276 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
4277 | |
4278 | static int | |
fba45db2 | 4279 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 4280 | { |
c906108c | 4281 | int len = hexnumlen (num); |
2df3850c JM |
4282 | return hexnumnstr (buf, num, len); |
4283 | } | |
4284 | ||
c906108c | 4285 | |
2df3850c | 4286 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 4287 | |
2df3850c | 4288 | static int |
fba45db2 | 4289 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
4290 | { |
4291 | int i; | |
4292 | ||
4293 | buf[width] = '\0'; | |
4294 | ||
4295 | for (i = width - 1; i >= 0; i--) | |
c906108c | 4296 | { |
c5aa993b | 4297 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
4298 | num >>= 4; |
4299 | } | |
4300 | ||
2df3850c | 4301 | return width; |
c906108c SS |
4302 | } |
4303 | ||
23860348 | 4304 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
4305 | |
4306 | static CORE_ADDR | |
fba45db2 | 4307 | remote_address_masked (CORE_ADDR addr) |
c906108c | 4308 | { |
911c95a5 UW |
4309 | int address_size = remote_address_size; |
4310 | /* If "remoteaddresssize" was not set, default to target address size. */ | |
4311 | if (!address_size) | |
1cf3db46 | 4312 | address_size = gdbarch_addr_bit (target_gdbarch); |
911c95a5 UW |
4313 | |
4314 | if (address_size > 0 | |
4315 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
4316 | { |
4317 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 4318 | in a ULONGEST variable. */ |
c906108c | 4319 | ULONGEST mask = 1; |
911c95a5 | 4320 | mask = (mask << address_size) - 1; |
c906108c SS |
4321 | addr &= mask; |
4322 | } | |
4323 | return addr; | |
4324 | } | |
4325 | ||
a31ea83d DJ |
4326 | /* Convert BUFFER, binary data at least LEN bytes long, into escaped |
4327 | binary data in OUT_BUF. Set *OUT_LEN to the length of the data | |
4328 | encoded in OUT_BUF, and return the number of bytes in OUT_BUF | |
4329 | (which may be more than *OUT_LEN due to escape characters). The | |
4330 | total number of bytes in the output buffer will be at most | |
4331 | OUT_MAXLEN. */ | |
4332 | ||
4333 | static int | |
4334 | remote_escape_output (const gdb_byte *buffer, int len, | |
4335 | gdb_byte *out_buf, int *out_len, | |
4336 | int out_maxlen) | |
4337 | { | |
4338 | int input_index, output_index; | |
4339 | ||
4340 | output_index = 0; | |
4341 | for (input_index = 0; input_index < len; input_index++) | |
4342 | { | |
4343 | gdb_byte b = buffer[input_index]; | |
4344 | ||
4345 | if (b == '$' || b == '#' || b == '}') | |
4346 | { | |
4347 | /* These must be escaped. */ | |
4348 | if (output_index + 2 > out_maxlen) | |
4349 | break; | |
4350 | out_buf[output_index++] = '}'; | |
4351 | out_buf[output_index++] = b ^ 0x20; | |
4352 | } | |
4353 | else | |
4354 | { | |
4355 | if (output_index + 1 > out_maxlen) | |
4356 | break; | |
4357 | out_buf[output_index++] = b; | |
4358 | } | |
4359 | } | |
4360 | ||
4361 | *out_len = input_index; | |
4362 | return output_index; | |
4363 | } | |
4364 | ||
0876f84a DJ |
4365 | /* Convert BUFFER, escaped data LEN bytes long, into binary data |
4366 | in OUT_BUF. Return the number of bytes written to OUT_BUF. | |
4367 | Raise an error if the total number of bytes exceeds OUT_MAXLEN. | |
4368 | ||
4369 | This function reverses remote_escape_output. It allows more | |
4370 | escaped characters than that function does, in particular because | |
4371 | '*' must be escaped to avoid the run-length encoding processing | |
4372 | in reading packets. */ | |
4373 | ||
4374 | static int | |
4375 | remote_unescape_input (const gdb_byte *buffer, int len, | |
4376 | gdb_byte *out_buf, int out_maxlen) | |
4377 | { | |
4378 | int input_index, output_index; | |
4379 | int escaped; | |
4380 | ||
4381 | output_index = 0; | |
4382 | escaped = 0; | |
4383 | for (input_index = 0; input_index < len; input_index++) | |
4384 | { | |
4385 | gdb_byte b = buffer[input_index]; | |
4386 | ||
4387 | if (output_index + 1 > out_maxlen) | |
4388 | { | |
4389 | warning (_("Received too much data from remote target;" | |
4390 | " ignoring overflow.")); | |
4391 | return output_index; | |
4392 | } | |
4393 | ||
4394 | if (escaped) | |
4395 | { | |
4396 | out_buf[output_index++] = b ^ 0x20; | |
4397 | escaped = 0; | |
4398 | } | |
4399 | else if (b == '}') | |
4400 | escaped = 1; | |
4401 | else | |
4402 | out_buf[output_index++] = b; | |
4403 | } | |
4404 | ||
4405 | if (escaped) | |
4406 | error (_("Unmatched escape character in target response.")); | |
4407 | ||
4408 | return output_index; | |
4409 | } | |
4410 | ||
c906108c SS |
4411 | /* Determine whether the remote target supports binary downloading. |
4412 | This is accomplished by sending a no-op memory write of zero length | |
4413 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
4414 | the whole packet, since many stubs strip the eighth bit and |
4415 | subsequently compute a wrong checksum, which causes real havoc with | |
4416 | remote_write_bytes. | |
7a292a7a | 4417 | |
96baa820 JM |
4418 | NOTE: This can still lose if the serial line is not eight-bit |
4419 | clean. In cases like this, the user should clear "remote | |
23860348 | 4420 | X-packet". */ |
96baa820 | 4421 | |
c906108c | 4422 | static void |
fba45db2 | 4423 | check_binary_download (CORE_ADDR addr) |
c906108c | 4424 | { |
d01949b6 | 4425 | struct remote_state *rs = get_remote_state (); |
24b06219 | 4426 | |
444abaca | 4427 | switch (remote_protocol_packets[PACKET_X].support) |
c906108c | 4428 | { |
96baa820 JM |
4429 | case PACKET_DISABLE: |
4430 | break; | |
4431 | case PACKET_ENABLE: | |
4432 | break; | |
4433 | case PACKET_SUPPORT_UNKNOWN: | |
4434 | { | |
96baa820 | 4435 | char *p; |
802188a7 | 4436 | |
2e9f7625 | 4437 | p = rs->buf; |
96baa820 JM |
4438 | *p++ = 'X'; |
4439 | p += hexnumstr (p, (ULONGEST) addr); | |
4440 | *p++ = ','; | |
4441 | p += hexnumstr (p, (ULONGEST) 0); | |
4442 | *p++ = ':'; | |
4443 | *p = '\0'; | |
802188a7 | 4444 | |
2e9f7625 | 4445 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 4446 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 4447 | |
2e9f7625 | 4448 | if (rs->buf[0] == '\0') |
96baa820 JM |
4449 | { |
4450 | if (remote_debug) | |
4451 | fprintf_unfiltered (gdb_stdlog, | |
4452 | "binary downloading NOT suppported by target\n"); | |
444abaca | 4453 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
4454 | } |
4455 | else | |
4456 | { | |
4457 | if (remote_debug) | |
4458 | fprintf_unfiltered (gdb_stdlog, | |
4459 | "binary downloading suppported by target\n"); | |
444abaca | 4460 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
4461 | } |
4462 | break; | |
4463 | } | |
c906108c SS |
4464 | } |
4465 | } | |
4466 | ||
4467 | /* Write memory data directly to the remote machine. | |
4468 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 4469 | HEADER is the starting part of the packet. |
c906108c SS |
4470 | MEMADDR is the address in the remote memory space. |
4471 | MYADDR is the address of the buffer in our space. | |
4472 | LEN is the number of bytes. | |
a76d924d DJ |
4473 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
4474 | should send data as binary ('X'), or hex-encoded ('M'). | |
4475 | ||
4476 | The function creates packet of the form | |
4477 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
4478 | ||
4479 | where encoding of <DATA> is termined by PACKET_FORMAT. | |
4480 | ||
4481 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
4482 | are omitted. | |
4483 | ||
4484 | Returns the number of bytes transferred, or 0 (setting errno) for | |
23860348 | 4485 | error. Only transfer a single packet. */ |
c906108c | 4486 | |
a76d924d DJ |
4487 | static int |
4488 | remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, | |
4489 | const gdb_byte *myaddr, int len, | |
4490 | char packet_format, int use_length) | |
c906108c | 4491 | { |
6d820c5c | 4492 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 4493 | char *p; |
a76d924d DJ |
4494 | char *plen = NULL; |
4495 | int plenlen = 0; | |
917317f4 JM |
4496 | int todo; |
4497 | int nr_bytes; | |
a257b5bb | 4498 | int payload_size; |
6765f3e5 | 4499 | int payload_length; |
a76d924d DJ |
4500 | int header_length; |
4501 | ||
4502 | if (packet_format != 'X' && packet_format != 'M') | |
4503 | internal_error (__FILE__, __LINE__, | |
4504 | "remote_write_bytes_aux: bad packet format"); | |
c906108c | 4505 | |
b2182ed2 DJ |
4506 | if (len <= 0) |
4507 | return 0; | |
4508 | ||
3de11b2e | 4509 | payload_size = get_memory_write_packet_size (); |
2bc416ba | 4510 | |
6d820c5c DJ |
4511 | /* The packet buffer will be large enough for the payload; |
4512 | get_memory_packet_size ensures this. */ | |
a76d924d | 4513 | rs->buf[0] = '\0'; |
c906108c | 4514 | |
a257b5bb | 4515 | /* Compute the size of the actual payload by subtracting out the |
3de11b2e NS |
4516 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". |
4517 | */ | |
a76d924d DJ |
4518 | payload_size -= strlen ("$,:#NN"); |
4519 | if (!use_length) | |
4520 | /* The comma won't be used. */ | |
4521 | payload_size += 1; | |
4522 | header_length = strlen (header); | |
4523 | payload_size -= header_length; | |
3de11b2e | 4524 | payload_size -= hexnumlen (memaddr); |
c906108c | 4525 | |
a76d924d | 4526 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 4527 | |
a76d924d DJ |
4528 | strcat (rs->buf, header); |
4529 | p = rs->buf + strlen (header); | |
4530 | ||
4531 | /* Compute a best guess of the number of bytes actually transfered. */ | |
4532 | if (packet_format == 'X') | |
c906108c | 4533 | { |
23860348 | 4534 | /* Best guess at number of bytes that will fit. */ |
a257b5bb | 4535 | todo = min (len, payload_size); |
a76d924d DJ |
4536 | if (use_length) |
4537 | payload_size -= hexnumlen (todo); | |
3de11b2e | 4538 | todo = min (todo, payload_size); |
a76d924d DJ |
4539 | } |
4540 | else | |
4541 | { | |
23860348 | 4542 | /* Num bytes that will fit. */ |
a257b5bb | 4543 | todo = min (len, payload_size / 2); |
a76d924d DJ |
4544 | if (use_length) |
4545 | payload_size -= hexnumlen (todo); | |
3de11b2e | 4546 | todo = min (todo, payload_size / 2); |
917317f4 | 4547 | } |
a76d924d | 4548 | |
3de11b2e NS |
4549 | if (todo <= 0) |
4550 | internal_error (__FILE__, __LINE__, | |
4551 | _("minumum packet size too small to write data")); | |
802188a7 | 4552 | |
6765f3e5 DJ |
4553 | /* If we already need another packet, then try to align the end |
4554 | of this packet to a useful boundary. */ | |
4555 | if (todo > 2 * REMOTE_ALIGN_WRITES && todo < len) | |
4556 | todo = ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
4557 | ||
a257b5bb | 4558 | /* Append "<memaddr>". */ |
917317f4 JM |
4559 | memaddr = remote_address_masked (memaddr); |
4560 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 4561 | |
a76d924d DJ |
4562 | if (use_length) |
4563 | { | |
4564 | /* Append ",". */ | |
4565 | *p++ = ','; | |
802188a7 | 4566 | |
a76d924d DJ |
4567 | /* Append <len>. Retain the location/size of <len>. It may need to |
4568 | be adjusted once the packet body has been created. */ | |
4569 | plen = p; | |
4570 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
4571 | p += plenlen; | |
4572 | } | |
a257b5bb AC |
4573 | |
4574 | /* Append ":". */ | |
917317f4 JM |
4575 | *p++ = ':'; |
4576 | *p = '\0'; | |
802188a7 | 4577 | |
a257b5bb | 4578 | /* Append the packet body. */ |
a76d924d | 4579 | if (packet_format == 'X') |
917317f4 | 4580 | { |
917317f4 JM |
4581 | /* Binary mode. Send target system values byte by byte, in |
4582 | increasing byte addresses. Only escape certain critical | |
4583 | characters. */ | |
6765f3e5 DJ |
4584 | payload_length = remote_escape_output (myaddr, todo, p, &nr_bytes, |
4585 | payload_size); | |
4586 | ||
4587 | /* If not all TODO bytes fit, then we'll need another packet. Make | |
9b7194bc DJ |
4588 | a second try to keep the end of the packet aligned. Don't do |
4589 | this if the packet is tiny. */ | |
4590 | if (nr_bytes < todo && nr_bytes > 2 * REMOTE_ALIGN_WRITES) | |
6765f3e5 DJ |
4591 | { |
4592 | int new_nr_bytes; | |
4593 | ||
4594 | new_nr_bytes = (((memaddr + nr_bytes) & ~(REMOTE_ALIGN_WRITES - 1)) | |
4595 | - memaddr); | |
4596 | if (new_nr_bytes != nr_bytes) | |
4597 | payload_length = remote_escape_output (myaddr, new_nr_bytes, | |
4598 | p, &nr_bytes, | |
4599 | payload_size); | |
4600 | } | |
4601 | ||
4602 | p += payload_length; | |
a76d924d | 4603 | if (use_length && nr_bytes < todo) |
c906108c | 4604 | { |
802188a7 | 4605 | /* Escape chars have filled up the buffer prematurely, |
917317f4 JM |
4606 | and we have actually sent fewer bytes than planned. |
4607 | Fix-up the length field of the packet. Use the same | |
4608 | number of characters as before. */ | |
917317f4 JM |
4609 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); |
4610 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 4611 | } |
a76d924d DJ |
4612 | } |
4613 | else | |
4614 | { | |
917317f4 JM |
4615 | /* Normal mode: Send target system values byte by byte, in |
4616 | increasing byte addresses. Each byte is encoded as a two hex | |
4617 | value. */ | |
2644f393 | 4618 | nr_bytes = bin2hex (myaddr, p, todo); |
aa6c0017 | 4619 | p += 2 * nr_bytes; |
c906108c | 4620 | } |
802188a7 | 4621 | |
2e9f7625 | 4622 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 4623 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 4624 | |
2e9f7625 | 4625 | if (rs->buf[0] == 'E') |
917317f4 JM |
4626 | { |
4627 | /* There is no correspondance between what the remote protocol | |
4628 | uses for errors and errno codes. We would like a cleaner way | |
4629 | of representing errors (big enough to include errno codes, | |
4630 | bfd_error codes, and others). But for now just return EIO. */ | |
4631 | errno = EIO; | |
4632 | return 0; | |
4633 | } | |
802188a7 | 4634 | |
23860348 MS |
4635 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send |
4636 | fewer bytes than we'd planned. */ | |
917317f4 | 4637 | return nr_bytes; |
c906108c SS |
4638 | } |
4639 | ||
a76d924d DJ |
4640 | /* Write memory data directly to the remote machine. |
4641 | This does not inform the data cache; the data cache uses this. | |
4642 | MEMADDR is the address in the remote memory space. | |
4643 | MYADDR is the address of the buffer in our space. | |
4644 | LEN is the number of bytes. | |
4645 | ||
4646 | Returns number of bytes transferred, or 0 (setting errno) for | |
4647 | error. Only transfer a single packet. */ | |
4648 | ||
4649 | int | |
4650 | remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, int len) | |
4651 | { | |
4652 | char *packet_format = 0; | |
4653 | ||
4654 | /* Check whether the target supports binary download. */ | |
4655 | check_binary_download (memaddr); | |
4656 | ||
4657 | switch (remote_protocol_packets[PACKET_X].support) | |
4658 | { | |
4659 | case PACKET_ENABLE: | |
4660 | packet_format = "X"; | |
4661 | break; | |
4662 | case PACKET_DISABLE: | |
4663 | packet_format = "M"; | |
4664 | break; | |
4665 | case PACKET_SUPPORT_UNKNOWN: | |
4666 | internal_error (__FILE__, __LINE__, | |
4667 | _("remote_write_bytes: bad internal state")); | |
4668 | default: | |
4669 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
4670 | } | |
4671 | ||
4672 | return remote_write_bytes_aux (packet_format, | |
4673 | memaddr, myaddr, len, packet_format[0], 1); | |
4674 | } | |
4675 | ||
c906108c SS |
4676 | /* Read memory data directly from the remote machine. |
4677 | This does not use the data cache; the data cache uses this. | |
4678 | MEMADDR is the address in the remote memory space. | |
4679 | MYADDR is the address of the buffer in our space. | |
4680 | LEN is the number of bytes. | |
4681 | ||
4682 | Returns number of bytes transferred, or 0 for error. */ | |
4683 | ||
917317f4 JM |
4684 | /* NOTE: cagney/1999-10-18: This function (and its siblings in other |
4685 | remote targets) shouldn't attempt to read the entire buffer. | |
4686 | Instead it should read a single packet worth of data and then | |
4687 | return the byte size of that packet to the caller. The caller (its | |
4688 | caller and its callers caller ;-) already contains code for | |
23860348 | 4689 | handling partial reads. */ |
917317f4 | 4690 | |
449092f6 | 4691 | int |
cfd77fa1 | 4692 | remote_read_bytes (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
c906108c | 4693 | { |
6d820c5c | 4694 | struct remote_state *rs = get_remote_state (); |
23860348 | 4695 | int max_buf_size; /* Max size of packet output buffer. */ |
c906108c SS |
4696 | int origlen; |
4697 | ||
b2182ed2 DJ |
4698 | if (len <= 0) |
4699 | return 0; | |
4700 | ||
11cf8741 | 4701 | max_buf_size = get_memory_read_packet_size (); |
6d820c5c DJ |
4702 | /* The packet buffer will be large enough for the payload; |
4703 | get_memory_packet_size ensures this. */ | |
c906108c SS |
4704 | |
4705 | origlen = len; | |
4706 | while (len > 0) | |
4707 | { | |
c906108c SS |
4708 | char *p; |
4709 | int todo; | |
4710 | int i; | |
4711 | ||
c5aa993b | 4712 | todo = min (len, max_buf_size / 2); /* num bytes that will fit */ |
c906108c SS |
4713 | |
4714 | /* construct "m"<memaddr>","<len>" */ | |
2e9f7625 | 4715 | /* sprintf (rs->buf, "m%lx,%x", (unsigned long) memaddr, todo); */ |
c906108c | 4716 | memaddr = remote_address_masked (memaddr); |
2e9f7625 | 4717 | p = rs->buf; |
c906108c SS |
4718 | *p++ = 'm'; |
4719 | p += hexnumstr (p, (ULONGEST) memaddr); | |
4720 | *p++ = ','; | |
4721 | p += hexnumstr (p, (ULONGEST) todo); | |
4722 | *p = '\0'; | |
4723 | ||
2e9f7625 | 4724 | putpkt (rs->buf); |
6d820c5c | 4725 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 4726 | |
2e9f7625 DJ |
4727 | if (rs->buf[0] == 'E' |
4728 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
4729 | && rs->buf[3] == '\0') | |
c906108c | 4730 | { |
23860348 MS |
4731 | /* There is no correspondance between what the remote |
4732 | protocol uses for errors and errno codes. We would like | |
4733 | a cleaner way of representing errors (big enough to | |
4734 | include errno codes, bfd_error codes, and others). But | |
4735 | for now just return EIO. */ | |
c906108c SS |
4736 | errno = EIO; |
4737 | return 0; | |
4738 | } | |
4739 | ||
c5aa993b JM |
4740 | /* Reply describes memory byte by byte, |
4741 | each byte encoded as two hex characters. */ | |
c906108c | 4742 | |
2e9f7625 | 4743 | p = rs->buf; |
30559e10 | 4744 | if ((i = hex2bin (p, myaddr, todo)) < todo) |
c906108c | 4745 | { |
30559e10 | 4746 | /* Reply is short. This means that we were able to read |
23860348 | 4747 | only part of what we wanted to. */ |
30559e10 | 4748 | return i + (origlen - len); |
c906108c SS |
4749 | } |
4750 | myaddr += todo; | |
4751 | memaddr += todo; | |
4752 | len -= todo; | |
4753 | } | |
4754 | return origlen; | |
4755 | } | |
4756 | \f | |
4757 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
23860348 MS |
4758 | transferring to or from debugger address BUFFER. Write to inferior |
4759 | if SHOULD_WRITE is nonzero. Returns length of data written or | |
4760 | read; 0 for error. TARGET is unused. */ | |
392a587b | 4761 | |
c906108c | 4762 | static int |
961cb7b5 | 4763 | remote_xfer_memory (CORE_ADDR mem_addr, gdb_byte *buffer, int mem_len, |
0a65a603 | 4764 | int should_write, struct mem_attrib *attrib, |
29e57380 | 4765 | struct target_ops *target) |
c906108c | 4766 | { |
4930751a C |
4767 | int res; |
4768 | ||
82f73884 PA |
4769 | set_general_thread (inferior_ptid); |
4770 | ||
4930751a | 4771 | if (should_write) |
b2182ed2 | 4772 | res = remote_write_bytes (mem_addr, buffer, mem_len); |
4930751a | 4773 | else |
b2182ed2 | 4774 | res = remote_read_bytes (mem_addr, buffer, mem_len); |
4930751a C |
4775 | |
4776 | return res; | |
c906108c SS |
4777 | } |
4778 | ||
a76d924d DJ |
4779 | /* Sends a packet with content determined by the printf format string |
4780 | FORMAT and the remaining arguments, then gets the reply. Returns | |
4781 | whether the packet was a success, a failure, or unknown. */ | |
4782 | ||
4783 | enum packet_result | |
4784 | remote_send_printf (const char *format, ...) | |
4785 | { | |
4786 | struct remote_state *rs = get_remote_state (); | |
4787 | int max_size = get_remote_packet_size (); | |
4788 | ||
4789 | va_list ap; | |
4790 | va_start (ap, format); | |
4791 | ||
4792 | rs->buf[0] = '\0'; | |
4793 | if (vsnprintf (rs->buf, max_size, format, ap) >= max_size) | |
4794 | internal_error (__FILE__, __LINE__, "Too long remote packet."); | |
4795 | ||
4796 | if (putpkt (rs->buf) < 0) | |
4797 | error (_("Communication problem with target.")); | |
4798 | ||
4799 | rs->buf[0] = '\0'; | |
4800 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4801 | ||
4802 | return packet_check_result (rs->buf); | |
4803 | } | |
4804 | ||
4805 | static void | |
4806 | restore_remote_timeout (void *p) | |
4807 | { | |
4808 | int value = *(int *)p; | |
4809 | remote_timeout = value; | |
4810 | } | |
4811 | ||
4812 | /* Flash writing can take quite some time. We'll set | |
4813 | effectively infinite timeout for flash operations. | |
4814 | In future, we'll need to decide on a better approach. */ | |
4815 | static const int remote_flash_timeout = 1000; | |
4816 | ||
4817 | static void | |
4818 | remote_flash_erase (struct target_ops *ops, | |
4819 | ULONGEST address, LONGEST length) | |
4820 | { | |
4821 | int saved_remote_timeout = remote_timeout; | |
4822 | enum packet_result ret; | |
4823 | ||
4824 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
4825 | &saved_remote_timeout); | |
4826 | remote_timeout = remote_flash_timeout; | |
4827 | ||
4828 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
4829 | paddr (address), | |
4830 | phex (length, 4)); | |
4831 | switch (ret) | |
4832 | { | |
4833 | case PACKET_UNKNOWN: | |
4834 | error (_("Remote target does not support flash erase")); | |
4835 | case PACKET_ERROR: | |
4836 | error (_("Error erasing flash with vFlashErase packet")); | |
4837 | default: | |
4838 | break; | |
4839 | } | |
4840 | ||
4841 | do_cleanups (back_to); | |
4842 | } | |
4843 | ||
4844 | static LONGEST | |
4845 | remote_flash_write (struct target_ops *ops, | |
4846 | ULONGEST address, LONGEST length, | |
4847 | const gdb_byte *data) | |
4848 | { | |
4849 | int saved_remote_timeout = remote_timeout; | |
4850 | int ret; | |
4851 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
4852 | &saved_remote_timeout); | |
4853 | ||
4854 | remote_timeout = remote_flash_timeout; | |
4855 | ret = remote_write_bytes_aux ("vFlashWrite:", address, data, length, 'X', 0); | |
4856 | do_cleanups (back_to); | |
4857 | ||
4858 | return ret; | |
4859 | } | |
4860 | ||
4861 | static void | |
4862 | remote_flash_done (struct target_ops *ops) | |
4863 | { | |
4864 | int saved_remote_timeout = remote_timeout; | |
4865 | int ret; | |
4866 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
4867 | &saved_remote_timeout); | |
4868 | ||
4869 | remote_timeout = remote_flash_timeout; | |
4870 | ret = remote_send_printf ("vFlashDone"); | |
4871 | do_cleanups (back_to); | |
4872 | ||
4873 | switch (ret) | |
4874 | { | |
4875 | case PACKET_UNKNOWN: | |
4876 | error (_("Remote target does not support vFlashDone")); | |
4877 | case PACKET_ERROR: | |
4878 | error (_("Error finishing flash operation")); | |
4879 | default: | |
4880 | break; | |
4881 | } | |
4882 | } | |
4883 | ||
c906108c | 4884 | static void |
fba45db2 | 4885 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
4886 | { |
4887 | puts_filtered ("Debugging a target over a serial line.\n"); | |
4888 | } | |
4889 | \f | |
4890 | /* Stuff for dealing with the packets which are part of this protocol. | |
4891 | See comment at top of file for details. */ | |
4892 | ||
0876f84a | 4893 | /* Read a single character from the remote end. */ |
c906108c SS |
4894 | |
4895 | static int | |
fba45db2 | 4896 | readchar (int timeout) |
c906108c SS |
4897 | { |
4898 | int ch; | |
4899 | ||
2cd58942 | 4900 | ch = serial_readchar (remote_desc, timeout); |
c906108c | 4901 | |
2acceee2 | 4902 | if (ch >= 0) |
0876f84a | 4903 | return ch; |
2acceee2 JM |
4904 | |
4905 | switch ((enum serial_rc) ch) | |
c906108c SS |
4906 | { |
4907 | case SERIAL_EOF: | |
2acceee2 | 4908 | target_mourn_inferior (); |
8a3fe4f8 | 4909 | error (_("Remote connection closed")); |
2acceee2 | 4910 | /* no return */ |
c906108c | 4911 | case SERIAL_ERROR: |
e2e0b3e5 | 4912 | perror_with_name (_("Remote communication error")); |
2acceee2 | 4913 | /* no return */ |
c906108c | 4914 | case SERIAL_TIMEOUT: |
2acceee2 | 4915 | break; |
c906108c | 4916 | } |
2acceee2 | 4917 | return ch; |
c906108c SS |
4918 | } |
4919 | ||
6d820c5c DJ |
4920 | /* Send the command in *BUF to the remote machine, and read the reply |
4921 | into *BUF. Report an error if we get an error reply. Resize | |
4922 | *BUF using xrealloc if necessary to hold the result, and update | |
4923 | *SIZEOF_BUF. */ | |
c906108c SS |
4924 | |
4925 | static void | |
6d820c5c DJ |
4926 | remote_send (char **buf, |
4927 | long *sizeof_buf) | |
c906108c | 4928 | { |
6d820c5c | 4929 | putpkt (*buf); |
c2d11a7d | 4930 | getpkt (buf, sizeof_buf, 0); |
c906108c | 4931 | |
6d820c5c DJ |
4932 | if ((*buf)[0] == 'E') |
4933 | error (_("Remote failure reply: %s"), *buf); | |
c906108c SS |
4934 | } |
4935 | ||
4936 | /* Display a null-terminated packet on stdout, for debugging, using C | |
4937 | string notation. */ | |
4938 | ||
4939 | static void | |
fba45db2 | 4940 | print_packet (char *buf) |
c906108c SS |
4941 | { |
4942 | puts_filtered ("\""); | |
43e526b9 | 4943 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
4944 | puts_filtered ("\""); |
4945 | } | |
4946 | ||
4947 | int | |
fba45db2 | 4948 | putpkt (char *buf) |
c906108c SS |
4949 | { |
4950 | return putpkt_binary (buf, strlen (buf)); | |
4951 | } | |
4952 | ||
4953 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 4954 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 4955 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
4956 | and for a possible /0 if we are debugging (remote_debug) and want |
4957 | to print the sent packet as a string. */ | |
c906108c SS |
4958 | |
4959 | static int | |
fba45db2 | 4960 | putpkt_binary (char *buf, int cnt) |
c906108c | 4961 | { |
2d717e4f | 4962 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4963 | int i; |
4964 | unsigned char csum = 0; | |
11cf8741 | 4965 | char *buf2 = alloca (cnt + 6); |
085dd6e6 | 4966 | |
c906108c SS |
4967 | int ch; |
4968 | int tcount = 0; | |
4969 | char *p; | |
4970 | ||
2d717e4f DJ |
4971 | /* We're sending out a new packet. Make sure we don't look at a |
4972 | stale cached response. */ | |
4973 | rs->cached_wait_status = 0; | |
4974 | ||
c906108c SS |
4975 | /* Copy the packet into buffer BUF2, encapsulating it |
4976 | and giving it a checksum. */ | |
4977 | ||
c906108c SS |
4978 | p = buf2; |
4979 | *p++ = '$'; | |
4980 | ||
4981 | for (i = 0; i < cnt; i++) | |
4982 | { | |
4983 | csum += buf[i]; | |
4984 | *p++ = buf[i]; | |
4985 | } | |
4986 | *p++ = '#'; | |
4987 | *p++ = tohex ((csum >> 4) & 0xf); | |
4988 | *p++ = tohex (csum & 0xf); | |
4989 | ||
4990 | /* Send it over and over until we get a positive ack. */ | |
4991 | ||
4992 | while (1) | |
4993 | { | |
4994 | int started_error_output = 0; | |
4995 | ||
4996 | if (remote_debug) | |
4997 | { | |
4998 | *p = '\0'; | |
43e526b9 JM |
4999 | fprintf_unfiltered (gdb_stdlog, "Sending packet: "); |
5000 | fputstrn_unfiltered (buf2, p - buf2, 0, gdb_stdlog); | |
d4f3574e | 5001 | fprintf_unfiltered (gdb_stdlog, "..."); |
0f71a2f6 | 5002 | gdb_flush (gdb_stdlog); |
c906108c | 5003 | } |
2cd58942 | 5004 | if (serial_write (remote_desc, buf2, p - buf2)) |
e2e0b3e5 | 5005 | perror_with_name (_("putpkt: write failed")); |
c906108c | 5006 | |
a6f3e723 SL |
5007 | /* If this is a no acks version of the remote protocol, send the |
5008 | packet and move on. */ | |
5009 | if (rs->noack_mode) | |
5010 | break; | |
5011 | ||
23860348 | 5012 | /* Read until either a timeout occurs (-2) or '+' is read. */ |
c906108c SS |
5013 | while (1) |
5014 | { | |
5015 | ch = readchar (remote_timeout); | |
5016 | ||
c5aa993b | 5017 | if (remote_debug) |
c906108c SS |
5018 | { |
5019 | switch (ch) | |
5020 | { | |
5021 | case '+': | |
1216fa2c | 5022 | case '-': |
c906108c SS |
5023 | case SERIAL_TIMEOUT: |
5024 | case '$': | |
5025 | if (started_error_output) | |
5026 | { | |
5027 | putchar_unfiltered ('\n'); | |
5028 | started_error_output = 0; | |
5029 | } | |
5030 | } | |
5031 | } | |
5032 | ||
5033 | switch (ch) | |
5034 | { | |
5035 | case '+': | |
5036 | if (remote_debug) | |
0f71a2f6 | 5037 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 5038 | return 1; |
1216fa2c AC |
5039 | case '-': |
5040 | if (remote_debug) | |
5041 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
c906108c | 5042 | case SERIAL_TIMEOUT: |
c5aa993b | 5043 | tcount++; |
c906108c SS |
5044 | if (tcount > 3) |
5045 | return 0; | |
23860348 | 5046 | break; /* Retransmit buffer. */ |
c906108c SS |
5047 | case '$': |
5048 | { | |
40e3f985 | 5049 | if (remote_debug) |
2bc416ba | 5050 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 5051 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
5052 | /* It's probably an old response sent because an ACK |
5053 | was lost. Gobble up the packet and ack it so it | |
5054 | doesn't get retransmitted when we resend this | |
5055 | packet. */ | |
6d820c5c | 5056 | skip_frame (); |
d6f7abdf | 5057 | serial_write (remote_desc, "+", 1); |
23860348 | 5058 | continue; /* Now, go look for +. */ |
c906108c SS |
5059 | } |
5060 | default: | |
5061 | if (remote_debug) | |
5062 | { | |
5063 | if (!started_error_output) | |
5064 | { | |
5065 | started_error_output = 1; | |
0f71a2f6 | 5066 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 5067 | } |
0f71a2f6 | 5068 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
5069 | } |
5070 | continue; | |
5071 | } | |
23860348 | 5072 | break; /* Here to retransmit. */ |
c906108c SS |
5073 | } |
5074 | ||
5075 | #if 0 | |
5076 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
5077 | able to get out next time we call QUIT, without anything as |
5078 | violent as interrupt_query. If we want to provide a way out of | |
5079 | here without getting to the next QUIT, it should be based on | |
5080 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
5081 | if (quit_flag) |
5082 | { | |
5083 | quit_flag = 0; | |
5084 | interrupt_query (); | |
5085 | } | |
5086 | #endif | |
5087 | } | |
a6f3e723 | 5088 | return 0; |
c906108c SS |
5089 | } |
5090 | ||
6d820c5c DJ |
5091 | /* Come here after finding the start of a frame when we expected an |
5092 | ack. Do our best to discard the rest of this packet. */ | |
5093 | ||
5094 | static void | |
5095 | skip_frame (void) | |
5096 | { | |
5097 | int c; | |
5098 | ||
5099 | while (1) | |
5100 | { | |
5101 | c = readchar (remote_timeout); | |
5102 | switch (c) | |
5103 | { | |
5104 | case SERIAL_TIMEOUT: | |
5105 | /* Nothing we can do. */ | |
5106 | return; | |
5107 | case '#': | |
5108 | /* Discard the two bytes of checksum and stop. */ | |
5109 | c = readchar (remote_timeout); | |
5110 | if (c >= 0) | |
5111 | c = readchar (remote_timeout); | |
5112 | ||
5113 | return; | |
5114 | case '*': /* Run length encoding. */ | |
5115 | /* Discard the repeat count. */ | |
5116 | c = readchar (remote_timeout); | |
5117 | if (c < 0) | |
5118 | return; | |
5119 | break; | |
5120 | default: | |
5121 | /* A regular character. */ | |
5122 | break; | |
5123 | } | |
5124 | } | |
5125 | } | |
5126 | ||
c906108c | 5127 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
5128 | into *BUF, verifying the checksum, length, and handling run-length |
5129 | compression. NUL terminate the buffer. If there is not enough room, | |
5130 | expand *BUF using xrealloc. | |
c906108c | 5131 | |
c2d11a7d JM |
5132 | Returns -1 on error, number of characters in buffer (ignoring the |
5133 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 5134 | SERIAL status indications). */ |
c2d11a7d JM |
5135 | |
5136 | static long | |
6d820c5c DJ |
5137 | read_frame (char **buf_p, |
5138 | long *sizeof_buf) | |
c906108c SS |
5139 | { |
5140 | unsigned char csum; | |
c2d11a7d | 5141 | long bc; |
c906108c | 5142 | int c; |
6d820c5c | 5143 | char *buf = *buf_p; |
a6f3e723 | 5144 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
5145 | |
5146 | csum = 0; | |
c2d11a7d | 5147 | bc = 0; |
c906108c SS |
5148 | |
5149 | while (1) | |
5150 | { | |
5151 | c = readchar (remote_timeout); | |
c906108c SS |
5152 | switch (c) |
5153 | { | |
5154 | case SERIAL_TIMEOUT: | |
5155 | if (remote_debug) | |
0f71a2f6 | 5156 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 5157 | return -1; |
c906108c SS |
5158 | case '$': |
5159 | if (remote_debug) | |
0f71a2f6 JM |
5160 | fputs_filtered ("Saw new packet start in middle of old one\n", |
5161 | gdb_stdlog); | |
23860348 | 5162 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
5163 | case '#': |
5164 | { | |
5165 | unsigned char pktcsum; | |
e1b09194 AC |
5166 | int check_0 = 0; |
5167 | int check_1 = 0; | |
c906108c | 5168 | |
c2d11a7d | 5169 | buf[bc] = '\0'; |
c906108c | 5170 | |
e1b09194 AC |
5171 | check_0 = readchar (remote_timeout); |
5172 | if (check_0 >= 0) | |
5173 | check_1 = readchar (remote_timeout); | |
802188a7 | 5174 | |
e1b09194 AC |
5175 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
5176 | { | |
5177 | if (remote_debug) | |
2bc416ba | 5178 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 5179 | gdb_stdlog); |
e1b09194 AC |
5180 | return -1; |
5181 | } | |
5182 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
5183 | { |
5184 | if (remote_debug) | |
2bc416ba | 5185 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 5186 | gdb_stdlog); |
40e3f985 FN |
5187 | return -1; |
5188 | } | |
c906108c | 5189 | |
a6f3e723 SL |
5190 | /* Don't recompute the checksum; with no ack packets we |
5191 | don't have any way to indicate a packet retransmission | |
5192 | is necessary. */ | |
5193 | if (rs->noack_mode) | |
5194 | return bc; | |
5195 | ||
e1b09194 | 5196 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 5197 | if (csum == pktcsum) |
c2d11a7d | 5198 | return bc; |
c906108c | 5199 | |
c5aa993b | 5200 | if (remote_debug) |
c906108c | 5201 | { |
0f71a2f6 | 5202 | fprintf_filtered (gdb_stdlog, |
c5aa993b | 5203 | "Bad checksum, sentsum=0x%x, csum=0x%x, buf=", |
0f71a2f6 | 5204 | pktcsum, csum); |
0876f84a | 5205 | fputstrn_filtered (buf, bc, 0, gdb_stdlog); |
0f71a2f6 | 5206 | fputs_filtered ("\n", gdb_stdlog); |
c906108c | 5207 | } |
c2d11a7d | 5208 | /* Number of characters in buffer ignoring trailing |
23860348 | 5209 | NULL. */ |
c2d11a7d | 5210 | return -1; |
c906108c | 5211 | } |
23860348 | 5212 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
5213 | { |
5214 | int repeat; | |
5215 | csum += c; | |
c906108c | 5216 | |
b4501125 AC |
5217 | c = readchar (remote_timeout); |
5218 | csum += c; | |
23860348 | 5219 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 5220 | |
23860348 | 5221 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 5222 | |
6d820c5c | 5223 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 5224 | { |
6d820c5c DJ |
5225 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
5226 | { | |
5227 | /* Make some more room in the buffer. */ | |
5228 | *sizeof_buf += repeat; | |
5229 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
5230 | buf = *buf_p; | |
5231 | } | |
5232 | ||
c2d11a7d JM |
5233 | memset (&buf[bc], buf[bc - 1], repeat); |
5234 | bc += repeat; | |
c2c6d25f JM |
5235 | continue; |
5236 | } | |
5237 | ||
c2d11a7d | 5238 | buf[bc] = '\0'; |
6d820c5c | 5239 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 5240 | return -1; |
c2c6d25f | 5241 | } |
c906108c | 5242 | default: |
6d820c5c | 5243 | if (bc >= *sizeof_buf - 1) |
c906108c | 5244 | { |
6d820c5c DJ |
5245 | /* Make some more room in the buffer. */ |
5246 | *sizeof_buf *= 2; | |
5247 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
5248 | buf = *buf_p; | |
c906108c SS |
5249 | } |
5250 | ||
6d820c5c DJ |
5251 | buf[bc++] = c; |
5252 | csum += c; | |
5253 | continue; | |
c906108c SS |
5254 | } |
5255 | } | |
5256 | } | |
5257 | ||
5258 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
5259 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
5260 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
5261 | rather than timing out; this is used (in synchronous mode) to wait | |
5262 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
5263 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
5264 | don't have to change all the calls to getpkt to deal with the | |
5265 | return value, because at the moment I don't know what the right | |
23860348 | 5266 | thing to do it for those. */ |
c906108c | 5267 | void |
6d820c5c DJ |
5268 | getpkt (char **buf, |
5269 | long *sizeof_buf, | |
c2d11a7d | 5270 | int forever) |
d9fcf2fb JM |
5271 | { |
5272 | int timed_out; | |
5273 | ||
5274 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
5275 | } | |
5276 | ||
5277 | ||
5278 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
5279 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
5280 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
5281 | rather than timing out; this is used (in synchronous mode) to wait | |
5282 | for a target that is is executing user code to stop. If FOREVER == | |
5283 | 0, this function is allowed to time out gracefully and return an | |
0876f84a DJ |
5284 | indication of this to the caller. Otherwise return the number |
5285 | of bytes read. */ | |
3172dc30 | 5286 | static int |
6d820c5c | 5287 | getpkt_sane (char **buf, long *sizeof_buf, int forever) |
c906108c | 5288 | { |
2d717e4f | 5289 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
5290 | int c; |
5291 | int tries; | |
5292 | int timeout; | |
5293 | int val; | |
5294 | ||
2d717e4f DJ |
5295 | /* We're reading a new response. Make sure we don't look at a |
5296 | previously cached response. */ | |
5297 | rs->cached_wait_status = 0; | |
5298 | ||
6d820c5c | 5299 | strcpy (*buf, "timeout"); |
c906108c SS |
5300 | |
5301 | if (forever) | |
5302 | { | |
c906108c | 5303 | timeout = watchdog > 0 ? watchdog : -1; |
c906108c SS |
5304 | } |
5305 | ||
5306 | else | |
5307 | timeout = remote_timeout; | |
5308 | ||
5309 | #define MAX_TRIES 3 | |
5310 | ||
5311 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
5312 | { | |
5313 | /* This can loop forever if the remote side sends us characters | |
23860348 MS |
5314 | continuously, but if it pauses, we'll get a zero from |
5315 | readchar because of timeout. Then we'll count that as a | |
5316 | retry. */ | |
c906108c | 5317 | |
23860348 MS |
5318 | /* Note that we will only wait forever prior to the start of a |
5319 | packet. After that, we expect characters to arrive at a | |
5320 | brisk pace. They should show up within remote_timeout | |
5321 | intervals. */ | |
c906108c SS |
5322 | |
5323 | do | |
5324 | { | |
5325 | c = readchar (timeout); | |
5326 | ||
5327 | if (c == SERIAL_TIMEOUT) | |
5328 | { | |
23860348 | 5329 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 5330 | { |
2acceee2 | 5331 | QUIT; |
c906108c | 5332 | target_mourn_inferior (); |
489eaeba | 5333 | error (_("Watchdog timeout has expired. Target detached.")); |
c906108c | 5334 | } |
c906108c | 5335 | if (remote_debug) |
0f71a2f6 | 5336 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c SS |
5337 | goto retry; |
5338 | } | |
5339 | } | |
5340 | while (c != '$'); | |
5341 | ||
5342 | /* We've found the start of a packet, now collect the data. */ | |
5343 | ||
c2d11a7d | 5344 | val = read_frame (buf, sizeof_buf); |
c906108c | 5345 | |
c2d11a7d | 5346 | if (val >= 0) |
c906108c SS |
5347 | { |
5348 | if (remote_debug) | |
43e526b9 JM |
5349 | { |
5350 | fprintf_unfiltered (gdb_stdlog, "Packet received: "); | |
0876f84a | 5351 | fputstrn_unfiltered (*buf, val, 0, gdb_stdlog); |
43e526b9 JM |
5352 | fprintf_unfiltered (gdb_stdlog, "\n"); |
5353 | } | |
a6f3e723 SL |
5354 | |
5355 | /* Skip the ack char if we're in no-ack mode. */ | |
5356 | if (!rs->noack_mode) | |
5357 | serial_write (remote_desc, "+", 1); | |
0876f84a | 5358 | return val; |
c906108c SS |
5359 | } |
5360 | ||
5361 | /* Try the whole thing again. */ | |
5362 | retry: | |
a6f3e723 SL |
5363 | /* Skip the nack char if we're in no-ack mode. */ |
5364 | if (!rs->noack_mode) | |
5365 | serial_write (remote_desc, "-", 1); | |
c906108c SS |
5366 | } |
5367 | ||
2bc416ba | 5368 | /* We have tried hard enough, and just can't receive the packet. |
23860348 | 5369 | Give up. */ |
c906108c | 5370 | |
a3f17187 | 5371 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); |
a6f3e723 SL |
5372 | |
5373 | /* Skip the ack char if we're in no-ack mode. */ | |
5374 | if (!rs->noack_mode) | |
5375 | serial_write (remote_desc, "+", 1); | |
0876f84a | 5376 | return -1; |
c906108c SS |
5377 | } |
5378 | \f | |
5379 | static void | |
fba45db2 | 5380 | remote_kill (void) |
43ff13b4 | 5381 | { |
23860348 | 5382 | /* Unregister the file descriptor from the event loop. */ |
ed9a39eb | 5383 | if (target_is_async_p ()) |
2cd58942 | 5384 | serial_async (remote_desc, NULL, 0); |
43ff13b4 | 5385 | |
23860348 MS |
5386 | /* Use catch_errors so the user can quit from gdb even when we |
5387 | aren't on speaking terms with the remote system. */ | |
c5aa993b | 5388 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
5389 | |
5390 | /* Don't wait for it to die. I'm not really sure it matters whether | |
5391 | we do or not. For the existing stubs, kill is a noop. */ | |
5392 | target_mourn_inferior (); | |
5393 | } | |
5394 | ||
82f73884 PA |
5395 | static int |
5396 | remote_vkill (int pid, struct remote_state *rs) | |
5397 | { | |
5398 | if (remote_protocol_packets[PACKET_vKill].support == PACKET_DISABLE) | |
5399 | return -1; | |
5400 | ||
5401 | /* Tell the remote target to detach. */ | |
5402 | sprintf (rs->buf, "vKill;%x", pid); | |
5403 | putpkt (rs->buf); | |
5404 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5405 | ||
5406 | if (packet_ok (rs->buf, | |
5407 | &remote_protocol_packets[PACKET_vKill]) == PACKET_OK) | |
5408 | return 0; | |
5409 | else if (remote_protocol_packets[PACKET_vKill].support == PACKET_DISABLE) | |
5410 | return -1; | |
5411 | else | |
5412 | return 1; | |
5413 | } | |
5414 | ||
5415 | static void | |
5416 | extended_remote_kill (void) | |
5417 | { | |
5418 | int res; | |
5419 | int pid = ptid_get_pid (inferior_ptid); | |
5420 | struct remote_state *rs = get_remote_state (); | |
5421 | ||
5422 | res = remote_vkill (pid, rs); | |
5423 | if (res == -1 && !remote_multi_process_p (rs)) | |
5424 | { | |
5425 | /* Don't try 'k' on a multi-process aware stub -- it has no way | |
5426 | to specify the pid. */ | |
5427 | ||
5428 | putpkt ("k"); | |
5429 | #if 0 | |
5430 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5431 | if (rs->buf[0] != 'O' || rs->buf[0] != 'K') | |
5432 | res = 1; | |
5433 | #else | |
5434 | /* Don't wait for it to die. I'm not really sure it matters whether | |
5435 | we do or not. For the existing stubs, kill is a noop. */ | |
5436 | res = 0; | |
5437 | #endif | |
5438 | } | |
5439 | ||
5440 | if (res != 0) | |
5441 | error (_("Can't kill process")); | |
5442 | ||
5443 | delete_inferior (pid); | |
5444 | target_mourn_inferior (); | |
5445 | } | |
5446 | ||
c906108c | 5447 | static void |
fba45db2 | 5448 | remote_mourn (void) |
c906108c SS |
5449 | { |
5450 | remote_mourn_1 (&remote_ops); | |
5451 | } | |
5452 | ||
c906108c SS |
5453 | /* Worker function for remote_mourn. */ |
5454 | static void | |
fba45db2 | 5455 | remote_mourn_1 (struct target_ops *target) |
c906108c | 5456 | { |
82f73884 PA |
5457 | /* Get rid of all the inferiors and their threads we were |
5458 | controlling. */ | |
5459 | discard_all_inferiors (); | |
5460 | ||
c906108c SS |
5461 | unpush_target (target); |
5462 | generic_mourn_inferior (); | |
5463 | } | |
5464 | ||
82f73884 PA |
5465 | static int |
5466 | select_new_thread_callback (struct thread_info *th, void* data) | |
5467 | { | |
5468 | if (!ptid_equal (th->ptid, minus_one_ptid)) | |
5469 | { | |
5470 | switch_to_thread (th->ptid); | |
5471 | printf_filtered (_("[Switching to %s]\n"), | |
5472 | target_pid_to_str (inferior_ptid)); | |
5473 | return 1; | |
5474 | } | |
5475 | return 0; | |
5476 | } | |
5477 | ||
2d717e4f DJ |
5478 | static void |
5479 | extended_remote_mourn_1 (struct target_ops *target) | |
5480 | { | |
5481 | struct remote_state *rs = get_remote_state (); | |
c906108c | 5482 | |
2d717e4f DJ |
5483 | /* Unlike "target remote", we do not want to unpush the target; then |
5484 | the next time the user says "run", we won't be connected. */ | |
5485 | ||
82f73884 | 5486 | if (have_inferiors ()) |
2d717e4f | 5487 | { |
82f73884 PA |
5488 | extern void nullify_last_target_wait_ptid (); |
5489 | /* Multi-process case. The current process has exited, but | |
5490 | there are other processes to debug. Switch to the first | |
5491 | available. */ | |
5492 | iterate_over_threads (select_new_thread_callback, NULL); | |
5493 | nullify_last_target_wait_ptid (); | |
2d717e4f DJ |
5494 | } |
5495 | else | |
5496 | { | |
82f73884 PA |
5497 | struct remote_state *rs = get_remote_state (); |
5498 | ||
5499 | /* Call common code to mark the inferior as not running. */ | |
5500 | generic_mourn_inferior (); | |
5501 | if (!remote_multi_process_p (rs)) | |
5502 | { | |
5503 | /* Check whether the target is running now - some remote stubs | |
5504 | automatically restart after kill. */ | |
5505 | putpkt ("?"); | |
5506 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5507 | ||
5508 | if (rs->buf[0] == 'S' || rs->buf[0] == 'T') | |
5509 | { | |
5510 | /* Assume that the target has been restarted. Set inferior_ptid | |
5511 | so that bits of core GDB realizes there's something here, e.g., | |
5512 | so that the user can say "kill" again. */ | |
5513 | inferior_ptid = magic_null_ptid; | |
5514 | } | |
5515 | else | |
5516 | { | |
5517 | /* Mark this (still pushed) target as not executable until we | |
5518 | restart it. */ | |
5519 | target_mark_exited (target); | |
5520 | } | |
5521 | } | |
5522 | else | |
5523 | /* Always remove execution if this was the last process. */ | |
5524 | target_mark_exited (target); | |
2d717e4f DJ |
5525 | } |
5526 | } | |
c906108c SS |
5527 | |
5528 | static void | |
2d717e4f | 5529 | extended_remote_mourn (void) |
c906108c | 5530 | { |
2d717e4f DJ |
5531 | extended_remote_mourn_1 (&extended_remote_ops); |
5532 | } | |
c906108c | 5533 | |
2d717e4f DJ |
5534 | static int |
5535 | extended_remote_run (char *args) | |
5536 | { | |
5537 | struct remote_state *rs = get_remote_state (); | |
5538 | char *p; | |
5539 | int len; | |
c906108c | 5540 | |
2d717e4f DJ |
5541 | /* If the user has disabled vRun support, or we have detected that |
5542 | support is not available, do not try it. */ | |
5543 | if (remote_protocol_packets[PACKET_vRun].support == PACKET_DISABLE) | |
5544 | return -1; | |
424163ea | 5545 | |
2d717e4f DJ |
5546 | strcpy (rs->buf, "vRun;"); |
5547 | len = strlen (rs->buf); | |
c906108c | 5548 | |
2d717e4f DJ |
5549 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
5550 | error (_("Remote file name too long for run packet")); | |
5551 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf + len, 0); | |
5552 | ||
d1a41061 | 5553 | gdb_assert (args != NULL); |
2d717e4f DJ |
5554 | if (*args) |
5555 | { | |
5556 | struct cleanup *back_to; | |
5557 | int i; | |
5558 | char **argv; | |
5559 | ||
d1a41061 | 5560 | argv = gdb_buildargv (args); |
2d717e4f DJ |
5561 | back_to = make_cleanup ((void (*) (void *)) freeargv, argv); |
5562 | for (i = 0; argv[i] != NULL; i++) | |
5563 | { | |
5564 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
5565 | error (_("Argument list too long for run packet")); | |
5566 | rs->buf[len++] = ';'; | |
5567 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf + len, 0); | |
5568 | } | |
5569 | do_cleanups (back_to); | |
5570 | } | |
5571 | ||
5572 | rs->buf[len++] = '\0'; | |
5573 | ||
5574 | putpkt (rs->buf); | |
5575 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5576 | ||
5577 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun]) == PACKET_OK) | |
5578 | { | |
5579 | /* We have a wait response; we don't need it, though. All is well. */ | |
5580 | return 0; | |
5581 | } | |
5582 | else if (remote_protocol_packets[PACKET_vRun].support == PACKET_DISABLE) | |
5583 | /* It wasn't disabled before, but it is now. */ | |
5584 | return -1; | |
5585 | else | |
5586 | { | |
5587 | if (remote_exec_file[0] == '\0') | |
5588 | error (_("Running the default executable on the remote target failed; " | |
5589 | "try \"set remote exec-file\"?")); | |
5590 | else | |
5591 | error (_("Running \"%s\" on the remote target failed"), | |
5592 | remote_exec_file); | |
5593 | } | |
c906108c SS |
5594 | } |
5595 | ||
2d717e4f DJ |
5596 | /* In the extended protocol we want to be able to do things like |
5597 | "run" and have them basically work as expected. So we need | |
5598 | a special create_inferior function. We support changing the | |
5599 | executable file and the command line arguments, but not the | |
5600 | environment. */ | |
5601 | ||
43ff13b4 | 5602 | static void |
2d717e4f | 5603 | extended_remote_create_inferior_1 (char *exec_file, char *args, |
75c99385 | 5604 | char **env, int from_tty) |
43ff13b4 | 5605 | { |
43ff13b4 | 5606 | /* If running asynchronously, register the target file descriptor |
23860348 | 5607 | with the event loop. */ |
75c99385 | 5608 | if (target_can_async_p ()) |
2acceee2 | 5609 | target_async (inferior_event_handler, 0); |
43ff13b4 JM |
5610 | |
5611 | /* Now restart the remote server. */ | |
2d717e4f DJ |
5612 | if (extended_remote_run (args) == -1) |
5613 | { | |
5614 | /* vRun was not supported. Fail if we need it to do what the | |
5615 | user requested. */ | |
5616 | if (remote_exec_file[0]) | |
5617 | error (_("Remote target does not support \"set remote exec-file\"")); | |
5618 | if (args[0]) | |
5619 | error (_("Remote target does not support \"set args\" or run <ARGS>")); | |
43ff13b4 | 5620 | |
2d717e4f DJ |
5621 | /* Fall back to "R". */ |
5622 | extended_remote_restart (); | |
5623 | } | |
424163ea | 5624 | |
45280a52 DJ |
5625 | /* Clean up from the last time we ran, before we mark the target |
5626 | running again. This will mark breakpoints uninserted, and | |
5627 | get_offsets may insert breakpoints. */ | |
5628 | init_thread_list (); | |
5629 | init_wait_for_inferior (); | |
5630 | ||
2d717e4f | 5631 | /* Now mark the inferior as running before we do anything else. */ |
79d7f229 | 5632 | inferior_ptid = magic_null_ptid; |
c0a2216e | 5633 | |
82f73884 | 5634 | add_inferior (ptid_get_pid (inferior_ptid)); |
c0a2216e PA |
5635 | add_thread_silent (inferior_ptid); |
5636 | ||
75c99385 | 5637 | target_mark_running (&extended_remote_ops); |
2d717e4f DJ |
5638 | |
5639 | /* Get updated offsets, if the stub uses qOffsets. */ | |
5640 | get_offsets (); | |
2d717e4f DJ |
5641 | } |
5642 | ||
5643 | static void | |
5644 | extended_remote_create_inferior (char *exec_file, char *args, | |
5645 | char **env, int from_tty) | |
5646 | { | |
75c99385 | 5647 | extended_remote_create_inferior_1 (exec_file, args, env, from_tty); |
43ff13b4 | 5648 | } |
c906108c | 5649 | \f |
c5aa993b | 5650 | |
8181d85f DJ |
5651 | /* Insert a breakpoint. On targets that have software breakpoint |
5652 | support, we ask the remote target to do the work; on targets | |
5653 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c SS |
5654 | |
5655 | static int | |
8181d85f | 5656 | remote_insert_breakpoint (struct bp_target_info *bp_tgt) |
c906108c | 5657 | { |
d471ea57 AC |
5658 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
5659 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
5660 | fails, and the user has explicitly requested the Z support then | |
23860348 | 5661 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 5662 | |
444abaca | 5663 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 5664 | { |
7c0f6dcc | 5665 | CORE_ADDR addr = bp_tgt->placed_address; |
4fff2411 JZ |
5666 | struct remote_state *rs; |
5667 | char *p; | |
7c0f6dcc | 5668 | int bpsize; |
4fff2411 | 5669 | |
1cf3db46 | 5670 | gdbarch_breakpoint_from_pc (target_gdbarch, &addr, &bpsize); |
4fff2411 JZ |
5671 | |
5672 | rs = get_remote_state (); | |
5673 | p = rs->buf; | |
802188a7 | 5674 | |
96baa820 JM |
5675 | *(p++) = 'Z'; |
5676 | *(p++) = '0'; | |
5677 | *(p++) = ','; | |
7c0f6dcc | 5678 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 5679 | p += hexnumstr (p, addr); |
7c0f6dcc | 5680 | sprintf (p, ",%d", bpsize); |
802188a7 | 5681 | |
6d820c5c DJ |
5682 | putpkt (rs->buf); |
5683 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5684 | |
6d820c5c | 5685 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 5686 | { |
d471ea57 AC |
5687 | case PACKET_ERROR: |
5688 | return -1; | |
5689 | case PACKET_OK: | |
7c0f6dcc JL |
5690 | bp_tgt->placed_address = addr; |
5691 | bp_tgt->placed_size = bpsize; | |
d471ea57 AC |
5692 | return 0; |
5693 | case PACKET_UNKNOWN: | |
5694 | break; | |
96baa820 JM |
5695 | } |
5696 | } | |
c906108c | 5697 | |
8181d85f | 5698 | return memory_insert_breakpoint (bp_tgt); |
c906108c SS |
5699 | } |
5700 | ||
5701 | static int | |
8181d85f | 5702 | remote_remove_breakpoint (struct bp_target_info *bp_tgt) |
c906108c | 5703 | { |
8181d85f | 5704 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 5705 | struct remote_state *rs = get_remote_state (); |
96baa820 JM |
5706 | int bp_size; |
5707 | ||
444abaca | 5708 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 5709 | { |
6d820c5c | 5710 | char *p = rs->buf; |
802188a7 | 5711 | |
96baa820 JM |
5712 | *(p++) = 'z'; |
5713 | *(p++) = '0'; | |
5714 | *(p++) = ','; | |
5715 | ||
8181d85f DJ |
5716 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
5717 | p += hexnumstr (p, addr); | |
5718 | sprintf (p, ",%d", bp_tgt->placed_size); | |
802188a7 | 5719 | |
6d820c5c DJ |
5720 | putpkt (rs->buf); |
5721 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5722 | |
6d820c5c | 5723 | return (rs->buf[0] == 'E'); |
96baa820 JM |
5724 | } |
5725 | ||
8181d85f | 5726 | return memory_remove_breakpoint (bp_tgt); |
c906108c SS |
5727 | } |
5728 | ||
d471ea57 AC |
5729 | static int |
5730 | watchpoint_to_Z_packet (int type) | |
5731 | { | |
5732 | switch (type) | |
5733 | { | |
5734 | case hw_write: | |
bb858e6a | 5735 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
5736 | break; |
5737 | case hw_read: | |
bb858e6a | 5738 | return Z_PACKET_READ_WP; |
d471ea57 AC |
5739 | break; |
5740 | case hw_access: | |
bb858e6a | 5741 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
5742 | break; |
5743 | default: | |
8e65ff28 | 5744 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5745 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
5746 | } |
5747 | } | |
5748 | ||
3c3bea1c | 5749 | static int |
fba45db2 | 5750 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 5751 | { |
d01949b6 | 5752 | struct remote_state *rs = get_remote_state (); |
e514a9d6 | 5753 | char *p; |
d471ea57 | 5754 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 5755 | |
444abaca | 5756 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
5cffb350 | 5757 | return -1; |
802188a7 | 5758 | |
6d820c5c DJ |
5759 | sprintf (rs->buf, "Z%x,", packet); |
5760 | p = strchr (rs->buf, '\0'); | |
96baa820 JM |
5761 | addr = remote_address_masked (addr); |
5762 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 5763 | sprintf (p, ",%x", len); |
802188a7 | 5764 | |
6d820c5c DJ |
5765 | putpkt (rs->buf); |
5766 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5767 | |
6d820c5c | 5768 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
5769 | { |
5770 | case PACKET_ERROR: | |
5771 | case PACKET_UNKNOWN: | |
5772 | return -1; | |
5773 | case PACKET_OK: | |
5774 | return 0; | |
5775 | } | |
8e65ff28 | 5776 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5777 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
5778 | } |
5779 | ||
d471ea57 | 5780 | |
3c3bea1c | 5781 | static int |
fba45db2 | 5782 | remote_remove_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 5783 | { |
d01949b6 | 5784 | struct remote_state *rs = get_remote_state (); |
e514a9d6 | 5785 | char *p; |
d471ea57 AC |
5786 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
5787 | ||
444abaca | 5788 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
5cffb350 | 5789 | return -1; |
802188a7 | 5790 | |
6d820c5c DJ |
5791 | sprintf (rs->buf, "z%x,", packet); |
5792 | p = strchr (rs->buf, '\0'); | |
96baa820 JM |
5793 | addr = remote_address_masked (addr); |
5794 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 5795 | sprintf (p, ",%x", len); |
6d820c5c DJ |
5796 | putpkt (rs->buf); |
5797 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5798 | |
6d820c5c | 5799 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
5800 | { |
5801 | case PACKET_ERROR: | |
5802 | case PACKET_UNKNOWN: | |
5803 | return -1; | |
5804 | case PACKET_OK: | |
5805 | return 0; | |
5806 | } | |
8e65ff28 | 5807 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5808 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
5809 | } |
5810 | ||
3c3bea1c | 5811 | |
501eef12 AC |
5812 | int remote_hw_watchpoint_limit = -1; |
5813 | int remote_hw_breakpoint_limit = -1; | |
d471ea57 | 5814 | |
b9362cc7 | 5815 | static int |
3c3bea1c | 5816 | remote_check_watch_resources (int type, int cnt, int ot) |
96baa820 | 5817 | { |
3c3bea1c GS |
5818 | if (type == bp_hardware_breakpoint) |
5819 | { | |
5820 | if (remote_hw_breakpoint_limit == 0) | |
5821 | return 0; | |
501eef12 AC |
5822 | else if (remote_hw_breakpoint_limit < 0) |
5823 | return 1; | |
3c3bea1c GS |
5824 | else if (cnt <= remote_hw_breakpoint_limit) |
5825 | return 1; | |
5826 | } | |
5827 | else | |
5828 | { | |
5829 | if (remote_hw_watchpoint_limit == 0) | |
5830 | return 0; | |
501eef12 AC |
5831 | else if (remote_hw_watchpoint_limit < 0) |
5832 | return 1; | |
3c3bea1c GS |
5833 | else if (ot) |
5834 | return -1; | |
5835 | else if (cnt <= remote_hw_watchpoint_limit) | |
5836 | return 1; | |
5837 | } | |
5838 | return -1; | |
5839 | } | |
5840 | ||
b9362cc7 | 5841 | static int |
3c3bea1c GS |
5842 | remote_stopped_by_watchpoint (void) |
5843 | { | |
82f73884 | 5844 | return remote_stopped_by_watchpoint_p; |
3c3bea1c GS |
5845 | } |
5846 | ||
4aa7a7f5 JJ |
5847 | static int |
5848 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 5849 | { |
4aa7a7f5 | 5850 | int rc = 0; |
d983da9c | 5851 | if (remote_stopped_by_watchpoint ()) |
4aa7a7f5 JJ |
5852 | { |
5853 | *addr_p = remote_watch_data_address; | |
5854 | rc = 1; | |
5855 | } | |
5856 | ||
5857 | return rc; | |
3c3bea1c GS |
5858 | } |
5859 | ||
5860 | ||
5861 | static int | |
8181d85f | 5862 | remote_insert_hw_breakpoint (struct bp_target_info *bp_tgt) |
3c3bea1c | 5863 | { |
8181d85f | 5864 | CORE_ADDR addr; |
4fff2411 JZ |
5865 | struct remote_state *rs; |
5866 | char *p; | |
802188a7 | 5867 | |
c8189ed1 | 5868 | /* The length field should be set to the size of a breakpoint |
8181d85f | 5869 | instruction, even though we aren't inserting one ourselves. */ |
c8189ed1 | 5870 | |
3b3b875c | 5871 | gdbarch_breakpoint_from_pc |
1cf3db46 | 5872 | (target_gdbarch, &bp_tgt->placed_address, &bp_tgt->placed_size); |
3c3bea1c | 5873 | |
444abaca | 5874 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 5875 | return -1; |
2bc416ba | 5876 | |
4fff2411 JZ |
5877 | rs = get_remote_state (); |
5878 | p = rs->buf; | |
5879 | ||
96baa820 JM |
5880 | *(p++) = 'Z'; |
5881 | *(p++) = '1'; | |
5882 | *(p++) = ','; | |
802188a7 | 5883 | |
8181d85f | 5884 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 5885 | p += hexnumstr (p, (ULONGEST) addr); |
8181d85f | 5886 | sprintf (p, ",%x", bp_tgt->placed_size); |
96baa820 | 5887 | |
6d820c5c DJ |
5888 | putpkt (rs->buf); |
5889 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5890 | |
6d820c5c | 5891 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
5892 | { |
5893 | case PACKET_ERROR: | |
5894 | case PACKET_UNKNOWN: | |
5895 | return -1; | |
5896 | case PACKET_OK: | |
5897 | return 0; | |
5898 | } | |
8e65ff28 | 5899 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5900 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
5901 | } |
5902 | ||
d471ea57 | 5903 | |
802188a7 | 5904 | static int |
8181d85f | 5905 | remote_remove_hw_breakpoint (struct bp_target_info *bp_tgt) |
96baa820 | 5906 | { |
8181d85f | 5907 | CORE_ADDR addr; |
d01949b6 | 5908 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 5909 | char *p = rs->buf; |
c8189ed1 | 5910 | |
444abaca | 5911 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 5912 | return -1; |
802188a7 | 5913 | |
96baa820 JM |
5914 | *(p++) = 'z'; |
5915 | *(p++) = '1'; | |
5916 | *(p++) = ','; | |
802188a7 | 5917 | |
8181d85f | 5918 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 5919 | p += hexnumstr (p, (ULONGEST) addr); |
8181d85f | 5920 | sprintf (p, ",%x", bp_tgt->placed_size); |
96baa820 | 5921 | |
6d820c5c DJ |
5922 | putpkt (rs->buf); |
5923 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 5924 | |
6d820c5c | 5925 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
5926 | { |
5927 | case PACKET_ERROR: | |
5928 | case PACKET_UNKNOWN: | |
5929 | return -1; | |
5930 | case PACKET_OK: | |
5931 | return 0; | |
5932 | } | |
8e65ff28 | 5933 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5934 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 5935 | } |
96baa820 | 5936 | |
c906108c SS |
5937 | /* Some targets are only capable of doing downloads, and afterwards |
5938 | they switch to the remote serial protocol. This function provides | |
5939 | a clean way to get from the download target to the remote target. | |
5940 | It's basically just a wrapper so that we don't have to expose any | |
5941 | of the internal workings of remote.c. | |
5942 | ||
5943 | Prior to calling this routine, you should shutdown the current | |
5944 | target code, else you will get the "A program is being debugged | |
5945 | already..." message. Usually a call to pop_target() suffices. */ | |
5946 | ||
5947 | void | |
fba45db2 | 5948 | push_remote_target (char *name, int from_tty) |
c906108c | 5949 | { |
a3f17187 | 5950 | printf_filtered (_("Switching to remote protocol\n")); |
c906108c SS |
5951 | remote_open (name, from_tty); |
5952 | } | |
5953 | ||
23860348 | 5954 | /* Table used by the crc32 function to calcuate the checksum. */ |
c906108c | 5955 | |
c5aa993b JM |
5956 | static unsigned long crc32_table[256] = |
5957 | {0, 0}; | |
c906108c SS |
5958 | |
5959 | static unsigned long | |
fba45db2 | 5960 | crc32 (unsigned char *buf, int len, unsigned int crc) |
c906108c | 5961 | { |
c5aa993b | 5962 | if (!crc32_table[1]) |
c906108c | 5963 | { |
23860348 | 5964 | /* Initialize the CRC table and the decoding table. */ |
c906108c SS |
5965 | int i, j; |
5966 | unsigned int c; | |
5967 | ||
5968 | for (i = 0; i < 256; i++) | |
c5aa993b JM |
5969 | { |
5970 | for (c = i << 24, j = 8; j > 0; --j) | |
5971 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
5972 | crc32_table[i] = c; | |
5973 | } | |
c906108c SS |
5974 | } |
5975 | ||
5976 | while (len--) | |
5977 | { | |
5978 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |
5979 | buf++; | |
5980 | } | |
5981 | return crc; | |
5982 | } | |
5983 | ||
5984 | /* compare-sections command | |
5985 | ||
5986 | With no arguments, compares each loadable section in the exec bfd | |
5987 | with the same memory range on the target, and reports mismatches. | |
5988 | Useful for verifying the image on the target against the exec file. | |
5989 | Depends on the target understanding the new "qCRC:" request. */ | |
5990 | ||
e514a9d6 JM |
5991 | /* FIXME: cagney/1999-10-26: This command should be broken down into a |
5992 | target method (target verify memory) and generic version of the | |
5993 | actual command. This will allow other high-level code (especially | |
23860348 | 5994 | generic_load()) to make use of this target functionality. */ |
e514a9d6 | 5995 | |
c906108c | 5996 | static void |
fba45db2 | 5997 | compare_sections_command (char *args, int from_tty) |
c906108c | 5998 | { |
d01949b6 | 5999 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
6000 | asection *s; |
6001 | unsigned long host_crc, target_crc; | |
6002 | extern bfd *exec_bfd; | |
6003 | struct cleanup *old_chain; | |
085dd6e6 JM |
6004 | char *tmp; |
6005 | char *sectdata; | |
ce359b09 | 6006 | const char *sectname; |
c906108c SS |
6007 | bfd_size_type size; |
6008 | bfd_vma lma; | |
6009 | int matched = 0; | |
6010 | int mismatched = 0; | |
6011 | ||
6012 | if (!exec_bfd) | |
8a3fe4f8 | 6013 | error (_("command cannot be used without an exec file")); |
c906108c SS |
6014 | if (!current_target.to_shortname || |
6015 | strcmp (current_target.to_shortname, "remote") != 0) | |
8a3fe4f8 | 6016 | error (_("command can only be used with remote target")); |
c906108c | 6017 | |
c5aa993b | 6018 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
6019 | { |
6020 | if (!(s->flags & SEC_LOAD)) | |
c5aa993b | 6021 | continue; /* skip non-loadable section */ |
c906108c | 6022 | |
2c500098 | 6023 | size = bfd_get_section_size (s); |
c906108c | 6024 | if (size == 0) |
c5aa993b | 6025 | continue; /* skip zero-length section */ |
c906108c | 6026 | |
ce359b09 | 6027 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 6028 | if (args && strcmp (args, sectname) != 0) |
c5aa993b | 6029 | continue; /* not the section selected by user */ |
c906108c | 6030 | |
c5aa993b | 6031 | matched = 1; /* do this section */ |
c906108c | 6032 | lma = s->lma; |
23860348 | 6033 | /* FIXME: assumes lma can fit into long. */ |
ea9c271d | 6034 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", |
ecbc58df | 6035 | (long) lma, (long) size); |
6d820c5c | 6036 | putpkt (rs->buf); |
c906108c | 6037 | |
23860348 MS |
6038 | /* Be clever; compute the host_crc before waiting for target |
6039 | reply. */ | |
c906108c | 6040 | sectdata = xmalloc (size); |
b8c9b27d | 6041 | old_chain = make_cleanup (xfree, sectdata); |
c906108c SS |
6042 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
6043 | host_crc = crc32 ((unsigned char *) sectdata, size, 0xffffffff); | |
6044 | ||
6d820c5c DJ |
6045 | getpkt (&rs->buf, &rs->buf_size, 0); |
6046 | if (rs->buf[0] == 'E') | |
8a3fe4f8 | 6047 | error (_("target memory fault, section %s, range 0x%s -- 0x%s"), |
823ca731 | 6048 | sectname, paddr (lma), paddr (lma + size)); |
6d820c5c | 6049 | if (rs->buf[0] != 'C') |
8a3fe4f8 | 6050 | error (_("remote target does not support this operation")); |
c906108c | 6051 | |
6d820c5c | 6052 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) |
c906108c SS |
6053 | target_crc = target_crc * 16 + fromhex (*tmp); |
6054 | ||
d4f3574e SS |
6055 | printf_filtered ("Section %s, range 0x%s -- 0x%s: ", |
6056 | sectname, paddr (lma), paddr (lma + size)); | |
c906108c SS |
6057 | if (host_crc == target_crc) |
6058 | printf_filtered ("matched.\n"); | |
6059 | else | |
c5aa993b JM |
6060 | { |
6061 | printf_filtered ("MIS-MATCHED!\n"); | |
6062 | mismatched++; | |
6063 | } | |
c906108c SS |
6064 | |
6065 | do_cleanups (old_chain); | |
6066 | } | |
6067 | if (mismatched > 0) | |
8a3fe4f8 AC |
6068 | warning (_("One or more sections of the remote executable does not match\n\ |
6069 | the loaded file\n")); | |
c906108c | 6070 | if (args && !matched) |
a3f17187 | 6071 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
6072 | } |
6073 | ||
0e7f50da UW |
6074 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
6075 | into remote target. The number of bytes written to the remote | |
6076 | target is returned, or -1 for error. */ | |
6077 | ||
6078 | static LONGEST | |
6079 | remote_write_qxfer (struct target_ops *ops, const char *object_name, | |
6080 | const char *annex, const gdb_byte *writebuf, | |
6081 | ULONGEST offset, LONGEST len, | |
6082 | struct packet_config *packet) | |
6083 | { | |
6084 | int i, buf_len; | |
6085 | ULONGEST n; | |
6086 | gdb_byte *wbuf; | |
6087 | struct remote_state *rs = get_remote_state (); | |
6088 | int max_size = get_memory_write_packet_size (); | |
6089 | ||
6090 | if (packet->support == PACKET_DISABLE) | |
6091 | return -1; | |
6092 | ||
6093 | /* Insert header. */ | |
6094 | i = snprintf (rs->buf, max_size, | |
6095 | "qXfer:%s:write:%s:%s:", | |
6096 | object_name, annex ? annex : "", | |
6097 | phex_nz (offset, sizeof offset)); | |
6098 | max_size -= (i + 1); | |
6099 | ||
6100 | /* Escape as much data as fits into rs->buf. */ | |
6101 | buf_len = remote_escape_output | |
6102 | (writebuf, len, (rs->buf + i), &max_size, max_size); | |
6103 | ||
6104 | if (putpkt_binary (rs->buf, i + buf_len) < 0 | |
6105 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
6106 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
6107 | return -1; | |
6108 | ||
6109 | unpack_varlen_hex (rs->buf, &n); | |
6110 | return n; | |
6111 | } | |
6112 | ||
0876f84a DJ |
6113 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
6114 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
6115 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
6116 | The number of bytes read may be less than LEN without indicating an | |
6117 | EOF. PACKET is checked and updated to indicate whether the remote | |
6118 | target supports this object. */ | |
6119 | ||
6120 | static LONGEST | |
6121 | remote_read_qxfer (struct target_ops *ops, const char *object_name, | |
6122 | const char *annex, | |
6123 | gdb_byte *readbuf, ULONGEST offset, LONGEST len, | |
6124 | struct packet_config *packet) | |
6125 | { | |
6126 | static char *finished_object; | |
6127 | static char *finished_annex; | |
6128 | static ULONGEST finished_offset; | |
6129 | ||
6130 | struct remote_state *rs = get_remote_state (); | |
6131 | unsigned int total = 0; | |
6132 | LONGEST i, n, packet_len; | |
6133 | ||
6134 | if (packet->support == PACKET_DISABLE) | |
6135 | return -1; | |
6136 | ||
6137 | /* Check whether we've cached an end-of-object packet that matches | |
6138 | this request. */ | |
6139 | if (finished_object) | |
6140 | { | |
6141 | if (strcmp (object_name, finished_object) == 0 | |
6142 | && strcmp (annex ? annex : "", finished_annex) == 0 | |
6143 | && offset == finished_offset) | |
6144 | return 0; | |
6145 | ||
6146 | /* Otherwise, we're now reading something different. Discard | |
6147 | the cache. */ | |
6148 | xfree (finished_object); | |
6149 | xfree (finished_annex); | |
6150 | finished_object = NULL; | |
6151 | finished_annex = NULL; | |
6152 | } | |
6153 | ||
6154 | /* Request only enough to fit in a single packet. The actual data | |
6155 | may not, since we don't know how much of it will need to be escaped; | |
6156 | the target is free to respond with slightly less data. We subtract | |
6157 | five to account for the response type and the protocol frame. */ | |
6158 | n = min (get_remote_packet_size () - 5, len); | |
6159 | snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s", | |
6160 | object_name, annex ? annex : "", | |
6161 | phex_nz (offset, sizeof offset), | |
6162 | phex_nz (n, sizeof n)); | |
6163 | i = putpkt (rs->buf); | |
6164 | if (i < 0) | |
6165 | return -1; | |
6166 | ||
6167 | rs->buf[0] = '\0'; | |
6168 | packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
6169 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) | |
6170 | return -1; | |
6171 | ||
6172 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
6173 | error (_("Unknown remote qXfer reply: %s"), rs->buf); | |
6174 | ||
6175 | /* 'm' means there is (or at least might be) more data after this | |
6176 | batch. That does not make sense unless there's at least one byte | |
6177 | of data in this reply. */ | |
6178 | if (rs->buf[0] == 'm' && packet_len == 1) | |
6179 | error (_("Remote qXfer reply contained no data.")); | |
6180 | ||
6181 | /* Got some data. */ | |
6182 | i = remote_unescape_input (rs->buf + 1, packet_len - 1, readbuf, n); | |
6183 | ||
6184 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
6185 | or possibly empty. If we have the final block of a non-empty |
6186 | object, record this fact to bypass a subsequent partial read. */ | |
6187 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a DJ |
6188 | { |
6189 | finished_object = xstrdup (object_name); | |
6190 | finished_annex = xstrdup (annex ? annex : ""); | |
6191 | finished_offset = offset + i; | |
6192 | } | |
6193 | ||
6194 | return i; | |
6195 | } | |
6196 | ||
1e3ff5ad | 6197 | static LONGEST |
4b8a223f | 6198 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
961cb7b5 MK |
6199 | const char *annex, gdb_byte *readbuf, |
6200 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
c906108c | 6201 | { |
82f73884 | 6202 | struct remote_state *rs; |
c906108c | 6203 | int i; |
6d820c5c | 6204 | char *p2; |
1e3ff5ad | 6205 | char query_type; |
c906108c | 6206 | |
82f73884 PA |
6207 | set_general_thread (inferior_ptid); |
6208 | ||
6209 | rs = get_remote_state (); | |
6210 | ||
b2182ed2 | 6211 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
6212 | if (object == TARGET_OBJECT_MEMORY) |
6213 | { | |
6214 | int xfered; | |
6215 | errno = 0; | |
6216 | ||
2d717e4f DJ |
6217 | /* If the remote target is connected but not running, we should |
6218 | pass this request down to a lower stratum (e.g. the executable | |
6219 | file). */ | |
6220 | if (!target_has_execution) | |
6221 | return 0; | |
6222 | ||
21e3b9b9 | 6223 | if (writebuf != NULL) |
b2182ed2 | 6224 | xfered = remote_write_bytes (offset, writebuf, len); |
21e3b9b9 | 6225 | else |
b2182ed2 | 6226 | xfered = remote_read_bytes (offset, readbuf, len); |
21e3b9b9 DJ |
6227 | |
6228 | if (xfered > 0) | |
6229 | return xfered; | |
6230 | else if (xfered == 0 && errno == 0) | |
6231 | return 0; | |
6232 | else | |
6233 | return -1; | |
6234 | } | |
6235 | ||
0e7f50da UW |
6236 | /* Handle SPU memory using qxfer packets. */ |
6237 | if (object == TARGET_OBJECT_SPU) | |
6238 | { | |
6239 | if (readbuf) | |
6240 | return remote_read_qxfer (ops, "spu", annex, readbuf, offset, len, | |
6241 | &remote_protocol_packets | |
6242 | [PACKET_qXfer_spu_read]); | |
6243 | else | |
6244 | return remote_write_qxfer (ops, "spu", annex, writebuf, offset, len, | |
6245 | &remote_protocol_packets | |
6246 | [PACKET_qXfer_spu_write]); | |
6247 | } | |
6248 | ||
a76d924d DJ |
6249 | /* Only handle flash writes. */ |
6250 | if (writebuf != NULL) | |
6251 | { | |
6252 | LONGEST xfered; | |
6253 | ||
6254 | switch (object) | |
6255 | { | |
6256 | case TARGET_OBJECT_FLASH: | |
6257 | xfered = remote_flash_write (ops, offset, len, writebuf); | |
6258 | ||
6259 | if (xfered > 0) | |
6260 | return xfered; | |
6261 | else if (xfered == 0 && errno == 0) | |
6262 | return 0; | |
6263 | else | |
6264 | return -1; | |
6265 | ||
6266 | default: | |
6267 | return -1; | |
6268 | } | |
6269 | } | |
4b8a223f | 6270 | |
1e3ff5ad AC |
6271 | /* Map pre-existing objects onto letters. DO NOT do this for new |
6272 | objects!!! Instead specify new query packets. */ | |
6273 | switch (object) | |
c906108c | 6274 | { |
1e3ff5ad AC |
6275 | case TARGET_OBJECT_AVR: |
6276 | query_type = 'R'; | |
6277 | break; | |
802188a7 RM |
6278 | |
6279 | case TARGET_OBJECT_AUXV: | |
0876f84a DJ |
6280 | gdb_assert (annex == NULL); |
6281 | return remote_read_qxfer (ops, "auxv", annex, readbuf, offset, len, | |
6282 | &remote_protocol_packets[PACKET_qXfer_auxv]); | |
802188a7 | 6283 | |
23181151 DJ |
6284 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
6285 | return remote_read_qxfer | |
6286 | (ops, "features", annex, readbuf, offset, len, | |
6287 | &remote_protocol_packets[PACKET_qXfer_features]); | |
6288 | ||
cfa9d6d9 DJ |
6289 | case TARGET_OBJECT_LIBRARIES: |
6290 | return remote_read_qxfer | |
6291 | (ops, "libraries", annex, readbuf, offset, len, | |
6292 | &remote_protocol_packets[PACKET_qXfer_libraries]); | |
6293 | ||
fd79ecee DJ |
6294 | case TARGET_OBJECT_MEMORY_MAP: |
6295 | gdb_assert (annex == NULL); | |
6296 | return remote_read_qxfer (ops, "memory-map", annex, readbuf, offset, len, | |
6297 | &remote_protocol_packets[PACKET_qXfer_memory_map]); | |
6298 | ||
1e3ff5ad | 6299 | default: |
c906108c SS |
6300 | return -1; |
6301 | } | |
6302 | ||
4b8a223f | 6303 | /* Note: a zero OFFSET and LEN can be used to query the minimum |
1e3ff5ad | 6304 | buffer size. */ |
4b8a223f | 6305 | if (offset == 0 && len == 0) |
ea9c271d DJ |
6306 | return (get_remote_packet_size ()); |
6307 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not | |
24b06219 | 6308 | large enough let the caller deal with it. */ |
ea9c271d | 6309 | if (len < get_remote_packet_size ()) |
1e3ff5ad | 6310 | return -1; |
ea9c271d | 6311 | len = get_remote_packet_size (); |
1e3ff5ad | 6312 | |
23860348 | 6313 | /* Except for querying the minimum buffer size, target must be open. */ |
c5aa993b | 6314 | if (!remote_desc) |
8a3fe4f8 | 6315 | error (_("remote query is only available after target open")); |
c906108c | 6316 | |
1e3ff5ad | 6317 | gdb_assert (annex != NULL); |
4b8a223f | 6318 | gdb_assert (readbuf != NULL); |
c906108c | 6319 | |
6d820c5c | 6320 | p2 = rs->buf; |
c906108c SS |
6321 | *p2++ = 'q'; |
6322 | *p2++ = query_type; | |
6323 | ||
23860348 MS |
6324 | /* We used one buffer char for the remote protocol q command and |
6325 | another for the query type. As the remote protocol encapsulation | |
6326 | uses 4 chars plus one extra in case we are debugging | |
6327 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
6328 | string. */ | |
c906108c | 6329 | i = 0; |
ea9c271d | 6330 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 6331 | { |
1e3ff5ad AC |
6332 | /* Bad caller may have sent forbidden characters. */ |
6333 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
6334 | *p2++ = annex[i]; | |
c906108c SS |
6335 | i++; |
6336 | } | |
1e3ff5ad AC |
6337 | *p2 = '\0'; |
6338 | gdb_assert (annex[i] == '\0'); | |
c906108c | 6339 | |
6d820c5c | 6340 | i = putpkt (rs->buf); |
c5aa993b JM |
6341 | if (i < 0) |
6342 | return i; | |
c906108c | 6343 | |
6d820c5c DJ |
6344 | getpkt (&rs->buf, &rs->buf_size, 0); |
6345 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 6346 | |
cfd77fa1 | 6347 | return strlen ((char *) readbuf); |
c906108c SS |
6348 | } |
6349 | ||
08388c79 DE |
6350 | static int |
6351 | remote_search_memory (struct target_ops* ops, | |
6352 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
6353 | const gdb_byte *pattern, ULONGEST pattern_len, | |
6354 | CORE_ADDR *found_addrp) | |
6355 | { | |
6356 | struct remote_state *rs = get_remote_state (); | |
6357 | int max_size = get_memory_write_packet_size (); | |
6358 | struct packet_config *packet = | |
6359 | &remote_protocol_packets[PACKET_qSearch_memory]; | |
6360 | /* number of packet bytes used to encode the pattern, | |
6361 | this could be more than PATTERN_LEN due to escape characters */ | |
6362 | int escaped_pattern_len; | |
6363 | /* amount of pattern that was encodable in the packet */ | |
6364 | int used_pattern_len; | |
6365 | int i; | |
6366 | int found; | |
6367 | ULONGEST found_addr; | |
6368 | ||
6369 | /* Don't go to the target if we don't have to. | |
6370 | This is done before checking packet->support to avoid the possibility that | |
6371 | a success for this edge case means the facility works in general. */ | |
6372 | if (pattern_len > search_space_len) | |
6373 | return 0; | |
6374 | if (pattern_len == 0) | |
6375 | { | |
6376 | *found_addrp = start_addr; | |
6377 | return 1; | |
6378 | } | |
6379 | ||
6380 | /* If we already know the packet isn't supported, fall back to the simple | |
6381 | way of searching memory. */ | |
6382 | ||
6383 | if (packet->support == PACKET_DISABLE) | |
6384 | { | |
6385 | /* Target doesn't provided special support, fall back and use the | |
6386 | standard support (copy memory and do the search here). */ | |
6387 | return simple_search_memory (ops, start_addr, search_space_len, | |
6388 | pattern, pattern_len, found_addrp); | |
6389 | } | |
6390 | ||
6391 | /* Insert header. */ | |
6392 | i = snprintf (rs->buf, max_size, | |
6393 | "qSearch:memory:%s;%s;", | |
6394 | paddr_nz (start_addr), | |
6395 | phex_nz (search_space_len, sizeof (search_space_len))); | |
6396 | max_size -= (i + 1); | |
6397 | ||
6398 | /* Escape as much data as fits into rs->buf. */ | |
6399 | escaped_pattern_len = | |
6400 | remote_escape_output (pattern, pattern_len, (rs->buf + i), | |
6401 | &used_pattern_len, max_size); | |
6402 | ||
6403 | /* Bail if the pattern is too large. */ | |
6404 | if (used_pattern_len != pattern_len) | |
10e0fa18 | 6405 | error ("Pattern is too large to transmit to remote target."); |
08388c79 DE |
6406 | |
6407 | if (putpkt_binary (rs->buf, i + escaped_pattern_len) < 0 | |
6408 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
6409 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
6410 | { | |
6411 | /* The request may not have worked because the command is not | |
6412 | supported. If so, fall back to the simple way. */ | |
6413 | if (packet->support == PACKET_DISABLE) | |
6414 | { | |
6415 | return simple_search_memory (ops, start_addr, search_space_len, | |
6416 | pattern, pattern_len, found_addrp); | |
6417 | } | |
6418 | return -1; | |
6419 | } | |
6420 | ||
6421 | if (rs->buf[0] == '0') | |
6422 | found = 0; | |
6423 | else if (rs->buf[0] == '1') | |
6424 | { | |
6425 | found = 1; | |
6426 | if (rs->buf[1] != ',') | |
10e0fa18 | 6427 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
6428 | unpack_varlen_hex (rs->buf + 2, &found_addr); |
6429 | *found_addrp = found_addr; | |
6430 | } | |
6431 | else | |
10e0fa18 | 6432 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
6433 | |
6434 | return found; | |
6435 | } | |
6436 | ||
96baa820 JM |
6437 | static void |
6438 | remote_rcmd (char *command, | |
d9fcf2fb | 6439 | struct ui_file *outbuf) |
96baa820 | 6440 | { |
d01949b6 | 6441 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 6442 | char *p = rs->buf; |
96baa820 JM |
6443 | |
6444 | if (!remote_desc) | |
8a3fe4f8 | 6445 | error (_("remote rcmd is only available after target open")); |
96baa820 | 6446 | |
23860348 | 6447 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
6448 | if (command == NULL) |
6449 | command = ""; | |
6450 | ||
23860348 | 6451 | /* The query prefix. */ |
2e9f7625 DJ |
6452 | strcpy (rs->buf, "qRcmd,"); |
6453 | p = strchr (rs->buf, '\0'); | |
96baa820 | 6454 | |
2e9f7625 | 6455 | if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/) > get_remote_packet_size ()) |
8a3fe4f8 | 6456 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 6457 | |
23860348 | 6458 | /* Encode the actual command. */ |
cfd77fa1 | 6459 | bin2hex ((gdb_byte *) command, p, 0); |
96baa820 | 6460 | |
6d820c5c | 6461 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 6462 | error (_("Communication problem with target.")); |
96baa820 JM |
6463 | |
6464 | /* get/display the response */ | |
6465 | while (1) | |
6466 | { | |
2e9f7625 DJ |
6467 | char *buf; |
6468 | ||
23860348 | 6469 | /* XXX - see also tracepoint.c:remote_get_noisy_reply(). */ |
2e9f7625 | 6470 | rs->buf[0] = '\0'; |
6d820c5c | 6471 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 6472 | buf = rs->buf; |
96baa820 | 6473 | if (buf[0] == '\0') |
8a3fe4f8 | 6474 | error (_("Target does not support this command.")); |
96baa820 JM |
6475 | if (buf[0] == 'O' && buf[1] != 'K') |
6476 | { | |
23860348 | 6477 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
6478 | continue; |
6479 | } | |
6480 | if (strcmp (buf, "OK") == 0) | |
6481 | break; | |
7be570e7 JM |
6482 | if (strlen (buf) == 3 && buf[0] == 'E' |
6483 | && isdigit (buf[1]) && isdigit (buf[2])) | |
6484 | { | |
8a3fe4f8 | 6485 | error (_("Protocol error with Rcmd")); |
7be570e7 | 6486 | } |
96baa820 JM |
6487 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
6488 | { | |
6489 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
6490 | fputc_unfiltered (c, outbuf); | |
6491 | } | |
6492 | break; | |
6493 | } | |
6494 | } | |
6495 | ||
fd79ecee DJ |
6496 | static VEC(mem_region_s) * |
6497 | remote_memory_map (struct target_ops *ops) | |
6498 | { | |
6499 | VEC(mem_region_s) *result = NULL; | |
6500 | char *text = target_read_stralloc (¤t_target, | |
6501 | TARGET_OBJECT_MEMORY_MAP, NULL); | |
6502 | ||
6503 | if (text) | |
6504 | { | |
6505 | struct cleanup *back_to = make_cleanup (xfree, text); | |
6506 | result = parse_memory_map (text); | |
6507 | do_cleanups (back_to); | |
6508 | } | |
6509 | ||
6510 | return result; | |
6511 | } | |
6512 | ||
c906108c | 6513 | static void |
fba45db2 | 6514 | packet_command (char *args, int from_tty) |
c906108c | 6515 | { |
d01949b6 | 6516 | struct remote_state *rs = get_remote_state (); |
c906108c | 6517 | |
c5aa993b | 6518 | if (!remote_desc) |
8a3fe4f8 | 6519 | error (_("command can only be used with remote target")); |
c906108c | 6520 | |
c5aa993b | 6521 | if (!args) |
8a3fe4f8 | 6522 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
6523 | |
6524 | puts_filtered ("sending: "); | |
6525 | print_packet (args); | |
6526 | puts_filtered ("\n"); | |
6527 | putpkt (args); | |
6528 | ||
6d820c5c | 6529 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 6530 | puts_filtered ("received: "); |
6d820c5c | 6531 | print_packet (rs->buf); |
c906108c SS |
6532 | puts_filtered ("\n"); |
6533 | } | |
6534 | ||
6535 | #if 0 | |
23860348 | 6536 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 6537 | |
a14ed312 | 6538 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 6539 | |
a14ed312 | 6540 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 6541 | |
a14ed312 | 6542 | static void threadalive_test (char *cmd, int tty); |
c906108c | 6543 | |
a14ed312 | 6544 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 6545 | |
23860348 | 6546 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 6547 | |
a14ed312 | 6548 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 6549 | |
23860348 | 6550 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 6551 | |
a14ed312 | 6552 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 6553 | |
a14ed312 | 6554 | static void init_remote_threadtests (void); |
c906108c | 6555 | |
23860348 | 6556 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
6557 | |
6558 | static void | |
fba45db2 | 6559 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
6560 | { |
6561 | int sample_thread = SAMPLE_THREAD; | |
6562 | ||
a3f17187 | 6563 | printf_filtered (_("Remote threadset test\n")); |
79d7f229 | 6564 | set_general_thread (sample_thread); |
c906108c SS |
6565 | } |
6566 | ||
6567 | ||
6568 | static void | |
fba45db2 | 6569 | threadalive_test (char *cmd, int tty) |
c906108c SS |
6570 | { |
6571 | int sample_thread = SAMPLE_THREAD; | |
79d7f229 PA |
6572 | int pid = ptid_get_pid (inferior_ptid); |
6573 | ptid_t ptid = ptid_build (pid, 0, sample_thread); | |
c906108c | 6574 | |
79d7f229 | 6575 | if (remote_thread_alive (ptid)) |
c906108c SS |
6576 | printf_filtered ("PASS: Thread alive test\n"); |
6577 | else | |
6578 | printf_filtered ("FAIL: Thread alive test\n"); | |
6579 | } | |
6580 | ||
23860348 | 6581 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
6582 | |
6583 | void | |
fba45db2 | 6584 | output_threadid (char *title, threadref *ref) |
c906108c SS |
6585 | { |
6586 | char hexid[20]; | |
6587 | ||
23860348 | 6588 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
6589 | hexid[16] = 0; |
6590 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
6591 | } | |
6592 | ||
6593 | static void | |
fba45db2 | 6594 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
6595 | { |
6596 | int startflag = 1; | |
6597 | threadref nextthread; | |
6598 | int done, result_count; | |
6599 | threadref threadlist[3]; | |
6600 | ||
6601 | printf_filtered ("Remote Threadlist test\n"); | |
6602 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
6603 | &result_count, &threadlist[0])) | |
6604 | printf_filtered ("FAIL: threadlist test\n"); | |
6605 | else | |
6606 | { | |
6607 | threadref *scan = threadlist; | |
6608 | threadref *limit = scan + result_count; | |
6609 | ||
6610 | while (scan < limit) | |
6611 | output_threadid (" thread ", scan++); | |
6612 | } | |
6613 | } | |
6614 | ||
6615 | void | |
fba45db2 | 6616 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
6617 | { |
6618 | output_threadid ("Threadid: ", &info->threadid); | |
6619 | printf_filtered ("Name: %s\n ", info->shortname); | |
6620 | printf_filtered ("State: %s\n", info->display); | |
6621 | printf_filtered ("other: %s\n\n", info->more_display); | |
6622 | } | |
6623 | ||
6624 | int | |
fba45db2 | 6625 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
6626 | { |
6627 | int result; | |
6628 | int set; | |
6629 | struct gdb_ext_thread_info threadinfo; | |
6630 | ||
6631 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
6632 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
6633 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
6634 | display_thread_info (&threadinfo); | |
6635 | return result; | |
6636 | } | |
6637 | ||
6638 | static void | |
fba45db2 | 6639 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
6640 | { |
6641 | int athread = SAMPLE_THREAD; | |
6642 | threadref thread; | |
6643 | int set; | |
6644 | ||
6645 | int_to_threadref (&thread, athread); | |
6646 | printf_filtered ("Remote Threadinfo test\n"); | |
6647 | if (!get_and_display_threadinfo (&thread)) | |
6648 | printf_filtered ("FAIL cannot get thread info\n"); | |
6649 | } | |
6650 | ||
6651 | static int | |
fba45db2 | 6652 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
6653 | { |
6654 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
6655 | return get_and_display_threadinfo (ref); | |
6656 | } | |
6657 | ||
6658 | static void | |
fba45db2 | 6659 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
6660 | { |
6661 | printf_filtered ("Remote Threadlist update test\n"); | |
6662 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
6663 | } | |
6664 | ||
6665 | static void | |
6666 | init_remote_threadtests (void) | |
6667 | { | |
1bedd215 AC |
6668 | add_com ("tlist", class_obscure, threadlist_test_cmd, _("\ |
6669 | Fetch and print the remote list of thread identifiers, one pkt only")); | |
c906108c | 6670 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 6671 | _("Fetch and display info about one thread")); |
c906108c | 6672 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 6673 | _("Test setting to a different thread")); |
c906108c | 6674 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 6675 | _("Iterate through updating all remote thread info")); |
c906108c | 6676 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 6677 | _(" Remote thread alive test ")); |
c906108c SS |
6678 | } |
6679 | ||
6680 | #endif /* 0 */ | |
6681 | ||
f3fb8c85 MS |
6682 | /* Convert a thread ID to a string. Returns the string in a static |
6683 | buffer. */ | |
6684 | ||
6685 | static char * | |
39f77062 | 6686 | remote_pid_to_str (ptid_t ptid) |
f3fb8c85 | 6687 | { |
79d7f229 | 6688 | static char buf[64]; |
82f73884 | 6689 | struct remote_state *rs = get_remote_state (); |
f3fb8c85 | 6690 | |
79d7f229 PA |
6691 | if (ptid_equal (magic_null_ptid, ptid)) |
6692 | { | |
6693 | xsnprintf (buf, sizeof buf, "Thread <main>"); | |
6694 | return buf; | |
6695 | } | |
82f73884 PA |
6696 | else if (remote_multi_process_p (rs) |
6697 | && ptid_get_tid (ptid) != 0 && ptid_get_pid (ptid) != 0) | |
6698 | { | |
6699 | xsnprintf (buf, sizeof buf, "Thread %d.%ld", | |
6700 | ptid_get_pid (ptid), ptid_get_tid (ptid)); | |
6701 | return buf; | |
6702 | } | |
79d7f229 PA |
6703 | else if (ptid_get_tid (ptid) != 0) |
6704 | { | |
6705 | xsnprintf (buf, sizeof buf, "Thread %ld", | |
6706 | ptid_get_tid (ptid)); | |
6707 | return buf; | |
6708 | } | |
6709 | ||
6710 | return normal_pid_to_str (ptid); | |
f3fb8c85 MS |
6711 | } |
6712 | ||
38691318 KB |
6713 | /* Get the address of the thread local variable in OBJFILE which is |
6714 | stored at OFFSET within the thread local storage for thread PTID. */ | |
6715 | ||
6716 | static CORE_ADDR | |
6717 | remote_get_thread_local_address (ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
6718 | { | |
444abaca | 6719 | if (remote_protocol_packets[PACKET_qGetTLSAddr].support != PACKET_DISABLE) |
38691318 KB |
6720 | { |
6721 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 6722 | char *p = rs->buf; |
82f73884 | 6723 | char *endp = rs->buf + get_remote_packet_size (); |
571dd617 | 6724 | enum packet_result result; |
38691318 KB |
6725 | |
6726 | strcpy (p, "qGetTLSAddr:"); | |
6727 | p += strlen (p); | |
82f73884 | 6728 | p = write_ptid (p, endp, ptid); |
38691318 KB |
6729 | *p++ = ','; |
6730 | p += hexnumstr (p, offset); | |
6731 | *p++ = ','; | |
6732 | p += hexnumstr (p, lm); | |
6733 | *p++ = '\0'; | |
6734 | ||
6d820c5c DJ |
6735 | putpkt (rs->buf); |
6736 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6737 | result = packet_ok (rs->buf, &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 6738 | if (result == PACKET_OK) |
38691318 KB |
6739 | { |
6740 | ULONGEST result; | |
6741 | ||
6d820c5c | 6742 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
6743 | return result; |
6744 | } | |
571dd617 | 6745 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
6746 | throw_error (TLS_GENERIC_ERROR, |
6747 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 6748 | else |
109c3e39 AC |
6749 | throw_error (TLS_GENERIC_ERROR, |
6750 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
6751 | } |
6752 | else | |
109c3e39 AC |
6753 | throw_error (TLS_GENERIC_ERROR, |
6754 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
6755 | /* Not reached. */ |
6756 | return 0; | |
6757 | } | |
6758 | ||
29709017 DJ |
6759 | /* Support for inferring a target description based on the current |
6760 | architecture and the size of a 'g' packet. While the 'g' packet | |
6761 | can have any size (since optional registers can be left off the | |
6762 | end), some sizes are easily recognizable given knowledge of the | |
6763 | approximate architecture. */ | |
6764 | ||
6765 | struct remote_g_packet_guess | |
6766 | { | |
6767 | int bytes; | |
6768 | const struct target_desc *tdesc; | |
6769 | }; | |
6770 | typedef struct remote_g_packet_guess remote_g_packet_guess_s; | |
6771 | DEF_VEC_O(remote_g_packet_guess_s); | |
6772 | ||
6773 | struct remote_g_packet_data | |
6774 | { | |
6775 | VEC(remote_g_packet_guess_s) *guesses; | |
6776 | }; | |
6777 | ||
6778 | static struct gdbarch_data *remote_g_packet_data_handle; | |
6779 | ||
6780 | static void * | |
6781 | remote_g_packet_data_init (struct obstack *obstack) | |
6782 | { | |
6783 | return OBSTACK_ZALLOC (obstack, struct remote_g_packet_data); | |
6784 | } | |
6785 | ||
6786 | void | |
6787 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
6788 | const struct target_desc *tdesc) | |
6789 | { | |
6790 | struct remote_g_packet_data *data | |
6791 | = gdbarch_data (gdbarch, remote_g_packet_data_handle); | |
6792 | struct remote_g_packet_guess new_guess, *guess; | |
6793 | int ix; | |
6794 | ||
6795 | gdb_assert (tdesc != NULL); | |
6796 | ||
6797 | for (ix = 0; | |
6798 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
6799 | ix++) | |
6800 | if (guess->bytes == bytes) | |
6801 | internal_error (__FILE__, __LINE__, | |
6802 | "Duplicate g packet description added for size %d", | |
6803 | bytes); | |
6804 | ||
6805 | new_guess.bytes = bytes; | |
6806 | new_guess.tdesc = tdesc; | |
6807 | VEC_safe_push (remote_g_packet_guess_s, data->guesses, &new_guess); | |
6808 | } | |
6809 | ||
6810 | static const struct target_desc * | |
6811 | remote_read_description (struct target_ops *target) | |
6812 | { | |
6813 | struct remote_g_packet_data *data | |
1cf3db46 | 6814 | = gdbarch_data (target_gdbarch, remote_g_packet_data_handle); |
29709017 DJ |
6815 | |
6816 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) | |
6817 | { | |
6818 | struct remote_g_packet_guess *guess; | |
6819 | int ix; | |
6820 | int bytes = send_g_packet (); | |
6821 | ||
6822 | for (ix = 0; | |
6823 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
6824 | ix++) | |
6825 | if (guess->bytes == bytes) | |
6826 | return guess->tdesc; | |
6827 | ||
6828 | /* We discard the g packet. A minor optimization would be to | |
6829 | hold on to it, and fill the register cache once we have selected | |
6830 | an architecture, but it's too tricky to do safely. */ | |
6831 | } | |
6832 | ||
6833 | return NULL; | |
6834 | } | |
6835 | ||
a6b151f1 DJ |
6836 | /* Remote file transfer support. This is host-initiated I/O, not |
6837 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
6838 | ||
6839 | /* If *LEFT is at least the length of STRING, copy STRING to | |
6840 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
6841 | decrease *LEFT. Otherwise raise an error. */ | |
6842 | ||
6843 | static void | |
6844 | remote_buffer_add_string (char **buffer, int *left, char *string) | |
6845 | { | |
6846 | int len = strlen (string); | |
6847 | ||
6848 | if (len > *left) | |
6849 | error (_("Packet too long for target.")); | |
6850 | ||
6851 | memcpy (*buffer, string, len); | |
6852 | *buffer += len; | |
6853 | *left -= len; | |
6854 | ||
6855 | /* NUL-terminate the buffer as a convenience, if there is | |
6856 | room. */ | |
6857 | if (*left) | |
6858 | **buffer = '\0'; | |
6859 | } | |
6860 | ||
6861 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
6862 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
6863 | decrease *LEFT. Otherwise raise an error. */ | |
6864 | ||
6865 | static void | |
6866 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
6867 | int len) | |
6868 | { | |
6869 | if (2 * len > *left) | |
6870 | error (_("Packet too long for target.")); | |
6871 | ||
6872 | bin2hex (bytes, *buffer, len); | |
6873 | *buffer += 2 * len; | |
6874 | *left -= 2 * len; | |
6875 | ||
6876 | /* NUL-terminate the buffer as a convenience, if there is | |
6877 | room. */ | |
6878 | if (*left) | |
6879 | **buffer = '\0'; | |
6880 | } | |
6881 | ||
6882 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
6883 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
6884 | decrease *LEFT. Otherwise raise an error. */ | |
6885 | ||
6886 | static void | |
6887 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
6888 | { | |
6889 | int len = hexnumlen (value); | |
6890 | ||
6891 | if (len > *left) | |
6892 | error (_("Packet too long for target.")); | |
6893 | ||
6894 | hexnumstr (*buffer, value); | |
6895 | *buffer += len; | |
6896 | *left -= len; | |
6897 | ||
6898 | /* NUL-terminate the buffer as a convenience, if there is | |
6899 | room. */ | |
6900 | if (*left) | |
6901 | **buffer = '\0'; | |
6902 | } | |
6903 | ||
6904 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
6905 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
6906 | was included, and *ATTACHMENT to point to the start of the annex | |
6907 | if any. The length of the packet isn't needed here; there may | |
6908 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
6909 | ||
6910 | Return 0 if the packet could be parsed, -1 if it could not. If | |
6911 | -1 is returned, the other variables may not be initialized. */ | |
6912 | ||
6913 | static int | |
6914 | remote_hostio_parse_result (char *buffer, int *retcode, | |
6915 | int *remote_errno, char **attachment) | |
6916 | { | |
6917 | char *p, *p2; | |
6918 | ||
6919 | *remote_errno = 0; | |
6920 | *attachment = NULL; | |
6921 | ||
6922 | if (buffer[0] != 'F') | |
6923 | return -1; | |
6924 | ||
6925 | errno = 0; | |
6926 | *retcode = strtol (&buffer[1], &p, 16); | |
6927 | if (errno != 0 || p == &buffer[1]) | |
6928 | return -1; | |
6929 | ||
6930 | /* Check for ",errno". */ | |
6931 | if (*p == ',') | |
6932 | { | |
6933 | errno = 0; | |
6934 | *remote_errno = strtol (p + 1, &p2, 16); | |
6935 | if (errno != 0 || p + 1 == p2) | |
6936 | return -1; | |
6937 | p = p2; | |
6938 | } | |
6939 | ||
6940 | /* Check for ";attachment". If there is no attachment, the | |
6941 | packet should end here. */ | |
6942 | if (*p == ';') | |
6943 | { | |
6944 | *attachment = p + 1; | |
6945 | return 0; | |
6946 | } | |
6947 | else if (*p == '\0') | |
6948 | return 0; | |
6949 | else | |
6950 | return -1; | |
6951 | } | |
6952 | ||
6953 | /* Send a prepared I/O packet to the target and read its response. | |
6954 | The prepared packet is in the global RS->BUF before this function | |
6955 | is called, and the answer is there when we return. | |
6956 | ||
6957 | COMMAND_BYTES is the length of the request to send, which may include | |
6958 | binary data. WHICH_PACKET is the packet configuration to check | |
6959 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
6960 | is set to the error number and -1 is returned. Otherwise the value | |
6961 | returned by the function is returned. | |
6962 | ||
6963 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
6964 | attachment is expected; an error will be reported if there's a | |
6965 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
6966 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
6967 | attachment's length. */ | |
6968 | ||
6969 | static int | |
6970 | remote_hostio_send_command (int command_bytes, int which_packet, | |
6971 | int *remote_errno, char **attachment, | |
6972 | int *attachment_len) | |
6973 | { | |
6974 | struct remote_state *rs = get_remote_state (); | |
6975 | int ret, bytes_read; | |
6976 | char *attachment_tmp; | |
6977 | ||
f1838a98 UW |
6978 | if (!remote_desc |
6979 | || remote_protocol_packets[which_packet].support == PACKET_DISABLE) | |
a6b151f1 DJ |
6980 | { |
6981 | *remote_errno = FILEIO_ENOSYS; | |
6982 | return -1; | |
6983 | } | |
6984 | ||
6985 | putpkt_binary (rs->buf, command_bytes); | |
6986 | bytes_read = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
6987 | ||
6988 | /* If it timed out, something is wrong. Don't try to parse the | |
6989 | buffer. */ | |
6990 | if (bytes_read < 0) | |
6991 | { | |
6992 | *remote_errno = FILEIO_EINVAL; | |
6993 | return -1; | |
6994 | } | |
6995 | ||
6996 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
6997 | { | |
6998 | case PACKET_ERROR: | |
6999 | *remote_errno = FILEIO_EINVAL; | |
7000 | return -1; | |
7001 | case PACKET_UNKNOWN: | |
7002 | *remote_errno = FILEIO_ENOSYS; | |
7003 | return -1; | |
7004 | case PACKET_OK: | |
7005 | break; | |
7006 | } | |
7007 | ||
7008 | if (remote_hostio_parse_result (rs->buf, &ret, remote_errno, | |
7009 | &attachment_tmp)) | |
7010 | { | |
7011 | *remote_errno = FILEIO_EINVAL; | |
7012 | return -1; | |
7013 | } | |
7014 | ||
7015 | /* Make sure we saw an attachment if and only if we expected one. */ | |
7016 | if ((attachment_tmp == NULL && attachment != NULL) | |
7017 | || (attachment_tmp != NULL && attachment == NULL)) | |
7018 | { | |
7019 | *remote_errno = FILEIO_EINVAL; | |
7020 | return -1; | |
7021 | } | |
7022 | ||
7023 | /* If an attachment was found, it must point into the packet buffer; | |
7024 | work out how many bytes there were. */ | |
7025 | if (attachment_tmp != NULL) | |
7026 | { | |
7027 | *attachment = attachment_tmp; | |
7028 | *attachment_len = bytes_read - (*attachment - rs->buf); | |
7029 | } | |
7030 | ||
7031 | return ret; | |
7032 | } | |
7033 | ||
7034 | /* Open FILENAME on the remote target, using FLAGS and MODE. Return a | |
7035 | remote file descriptor, or -1 if an error occurs (and set | |
7036 | *REMOTE_ERRNO). */ | |
7037 | ||
7038 | static int | |
7039 | remote_hostio_open (const char *filename, int flags, int mode, | |
7040 | int *remote_errno) | |
7041 | { | |
7042 | struct remote_state *rs = get_remote_state (); | |
7043 | char *p = rs->buf; | |
7044 | int left = get_remote_packet_size () - 1; | |
7045 | ||
7046 | remote_buffer_add_string (&p, &left, "vFile:open:"); | |
7047 | ||
7048 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
7049 | strlen (filename)); | |
7050 | remote_buffer_add_string (&p, &left, ","); | |
7051 | ||
7052 | remote_buffer_add_int (&p, &left, flags); | |
7053 | remote_buffer_add_string (&p, &left, ","); | |
7054 | ||
7055 | remote_buffer_add_int (&p, &left, mode); | |
7056 | ||
7057 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_open, | |
7058 | remote_errno, NULL, NULL); | |
7059 | } | |
7060 | ||
7061 | /* Write up to LEN bytes from WRITE_BUF to FD on the remote target. | |
7062 | Return the number of bytes written, or -1 if an error occurs (and | |
7063 | set *REMOTE_ERRNO). */ | |
7064 | ||
7065 | static int | |
7066 | remote_hostio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
7067 | ULONGEST offset, int *remote_errno) | |
7068 | { | |
7069 | struct remote_state *rs = get_remote_state (); | |
7070 | char *p = rs->buf; | |
7071 | int left = get_remote_packet_size (); | |
7072 | int out_len; | |
7073 | ||
7074 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); | |
7075 | ||
7076 | remote_buffer_add_int (&p, &left, fd); | |
7077 | remote_buffer_add_string (&p, &left, ","); | |
7078 | ||
7079 | remote_buffer_add_int (&p, &left, offset); | |
7080 | remote_buffer_add_string (&p, &left, ","); | |
7081 | ||
7082 | p += remote_escape_output (write_buf, len, p, &out_len, | |
7083 | get_remote_packet_size () - (p - rs->buf)); | |
7084 | ||
7085 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_pwrite, | |
7086 | remote_errno, NULL, NULL); | |
7087 | } | |
7088 | ||
7089 | /* Read up to LEN bytes FD on the remote target into READ_BUF | |
7090 | Return the number of bytes read, or -1 if an error occurs (and | |
7091 | set *REMOTE_ERRNO). */ | |
7092 | ||
7093 | static int | |
7094 | remote_hostio_pread (int fd, gdb_byte *read_buf, int len, | |
7095 | ULONGEST offset, int *remote_errno) | |
7096 | { | |
7097 | struct remote_state *rs = get_remote_state (); | |
7098 | char *p = rs->buf; | |
7099 | char *attachment; | |
7100 | int left = get_remote_packet_size (); | |
7101 | int ret, attachment_len; | |
7102 | int read_len; | |
7103 | ||
7104 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
7105 | ||
7106 | remote_buffer_add_int (&p, &left, fd); | |
7107 | remote_buffer_add_string (&p, &left, ","); | |
7108 | ||
7109 | remote_buffer_add_int (&p, &left, len); | |
7110 | remote_buffer_add_string (&p, &left, ","); | |
7111 | ||
7112 | remote_buffer_add_int (&p, &left, offset); | |
7113 | ||
7114 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_pread, | |
7115 | remote_errno, &attachment, | |
7116 | &attachment_len); | |
7117 | ||
7118 | if (ret < 0) | |
7119 | return ret; | |
7120 | ||
7121 | read_len = remote_unescape_input (attachment, attachment_len, | |
7122 | read_buf, len); | |
7123 | if (read_len != ret) | |
7124 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
7125 | ||
7126 | return ret; | |
7127 | } | |
7128 | ||
7129 | /* Close FD on the remote target. Return 0, or -1 if an error occurs | |
7130 | (and set *REMOTE_ERRNO). */ | |
7131 | ||
7132 | static int | |
7133 | remote_hostio_close (int fd, int *remote_errno) | |
7134 | { | |
7135 | struct remote_state *rs = get_remote_state (); | |
7136 | char *p = rs->buf; | |
7137 | int left = get_remote_packet_size () - 1; | |
7138 | ||
7139 | remote_buffer_add_string (&p, &left, "vFile:close:"); | |
7140 | ||
7141 | remote_buffer_add_int (&p, &left, fd); | |
7142 | ||
7143 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_close, | |
7144 | remote_errno, NULL, NULL); | |
7145 | } | |
7146 | ||
7147 | /* Unlink FILENAME on the remote target. Return 0, or -1 if an error | |
7148 | occurs (and set *REMOTE_ERRNO). */ | |
7149 | ||
7150 | static int | |
7151 | remote_hostio_unlink (const char *filename, int *remote_errno) | |
7152 | { | |
7153 | struct remote_state *rs = get_remote_state (); | |
7154 | char *p = rs->buf; | |
7155 | int left = get_remote_packet_size () - 1; | |
7156 | ||
7157 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); | |
7158 | ||
7159 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
7160 | strlen (filename)); | |
7161 | ||
7162 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_unlink, | |
7163 | remote_errno, NULL, NULL); | |
7164 | } | |
7165 | ||
7166 | static int | |
7167 | remote_fileio_errno_to_host (int errnum) | |
7168 | { | |
7169 | switch (errnum) | |
7170 | { | |
7171 | case FILEIO_EPERM: | |
7172 | return EPERM; | |
7173 | case FILEIO_ENOENT: | |
7174 | return ENOENT; | |
7175 | case FILEIO_EINTR: | |
7176 | return EINTR; | |
7177 | case FILEIO_EIO: | |
7178 | return EIO; | |
7179 | case FILEIO_EBADF: | |
7180 | return EBADF; | |
7181 | case FILEIO_EACCES: | |
7182 | return EACCES; | |
7183 | case FILEIO_EFAULT: | |
7184 | return EFAULT; | |
7185 | case FILEIO_EBUSY: | |
7186 | return EBUSY; | |
7187 | case FILEIO_EEXIST: | |
7188 | return EEXIST; | |
7189 | case FILEIO_ENODEV: | |
7190 | return ENODEV; | |
7191 | case FILEIO_ENOTDIR: | |
7192 | return ENOTDIR; | |
7193 | case FILEIO_EISDIR: | |
7194 | return EISDIR; | |
7195 | case FILEIO_EINVAL: | |
7196 | return EINVAL; | |
7197 | case FILEIO_ENFILE: | |
7198 | return ENFILE; | |
7199 | case FILEIO_EMFILE: | |
7200 | return EMFILE; | |
7201 | case FILEIO_EFBIG: | |
7202 | return EFBIG; | |
7203 | case FILEIO_ENOSPC: | |
7204 | return ENOSPC; | |
7205 | case FILEIO_ESPIPE: | |
7206 | return ESPIPE; | |
7207 | case FILEIO_EROFS: | |
7208 | return EROFS; | |
7209 | case FILEIO_ENOSYS: | |
7210 | return ENOSYS; | |
7211 | case FILEIO_ENAMETOOLONG: | |
7212 | return ENAMETOOLONG; | |
7213 | } | |
7214 | return -1; | |
7215 | } | |
7216 | ||
7217 | static char * | |
7218 | remote_hostio_error (int errnum) | |
7219 | { | |
7220 | int host_error = remote_fileio_errno_to_host (errnum); | |
7221 | ||
7222 | if (host_error == -1) | |
7223 | error (_("Unknown remote I/O error %d"), errnum); | |
7224 | else | |
7225 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
7226 | } | |
7227 | ||
7228 | static void | |
7229 | fclose_cleanup (void *file) | |
7230 | { | |
7231 | fclose (file); | |
7232 | } | |
7233 | ||
7234 | static void | |
7235 | remote_hostio_close_cleanup (void *opaque) | |
7236 | { | |
7237 | int fd = *(int *) opaque; | |
7238 | int remote_errno; | |
7239 | ||
7240 | remote_hostio_close (fd, &remote_errno); | |
7241 | } | |
7242 | ||
f1838a98 UW |
7243 | |
7244 | static void * | |
7245 | remote_bfd_iovec_open (struct bfd *abfd, void *open_closure) | |
7246 | { | |
7247 | const char *filename = bfd_get_filename (abfd); | |
7248 | int fd, remote_errno; | |
7249 | int *stream; | |
7250 | ||
7251 | gdb_assert (remote_filename_p (filename)); | |
7252 | ||
7253 | fd = remote_hostio_open (filename + 7, FILEIO_O_RDONLY, 0, &remote_errno); | |
7254 | if (fd == -1) | |
7255 | { | |
7256 | errno = remote_fileio_errno_to_host (remote_errno); | |
7257 | bfd_set_error (bfd_error_system_call); | |
7258 | return NULL; | |
7259 | } | |
7260 | ||
7261 | stream = xmalloc (sizeof (int)); | |
7262 | *stream = fd; | |
7263 | return stream; | |
7264 | } | |
7265 | ||
7266 | static int | |
7267 | remote_bfd_iovec_close (struct bfd *abfd, void *stream) | |
7268 | { | |
7269 | int fd = *(int *)stream; | |
7270 | int remote_errno; | |
7271 | ||
7272 | xfree (stream); | |
7273 | ||
7274 | /* Ignore errors on close; these may happen if the remote | |
7275 | connection was already torn down. */ | |
7276 | remote_hostio_close (fd, &remote_errno); | |
7277 | ||
7278 | return 1; | |
7279 | } | |
7280 | ||
7281 | static file_ptr | |
7282 | remote_bfd_iovec_pread (struct bfd *abfd, void *stream, void *buf, | |
7283 | file_ptr nbytes, file_ptr offset) | |
7284 | { | |
7285 | int fd = *(int *)stream; | |
7286 | int remote_errno; | |
7287 | file_ptr pos, bytes; | |
7288 | ||
7289 | pos = 0; | |
7290 | while (nbytes > pos) | |
7291 | { | |
7292 | bytes = remote_hostio_pread (fd, (char *)buf + pos, nbytes - pos, | |
7293 | offset + pos, &remote_errno); | |
7294 | if (bytes == 0) | |
7295 | /* Success, but no bytes, means end-of-file. */ | |
7296 | break; | |
7297 | if (bytes == -1) | |
7298 | { | |
7299 | errno = remote_fileio_errno_to_host (remote_errno); | |
7300 | bfd_set_error (bfd_error_system_call); | |
7301 | return -1; | |
7302 | } | |
7303 | ||
7304 | pos += bytes; | |
7305 | } | |
7306 | ||
7307 | return pos; | |
7308 | } | |
7309 | ||
7310 | static int | |
7311 | remote_bfd_iovec_stat (struct bfd *abfd, void *stream, struct stat *sb) | |
7312 | { | |
7313 | /* FIXME: We should probably implement remote_hostio_stat. */ | |
7314 | sb->st_size = INT_MAX; | |
7315 | return 0; | |
7316 | } | |
7317 | ||
7318 | int | |
7319 | remote_filename_p (const char *filename) | |
7320 | { | |
7321 | return strncmp (filename, "remote:", 7) == 0; | |
7322 | } | |
7323 | ||
7324 | bfd * | |
7325 | remote_bfd_open (const char *remote_file, const char *target) | |
7326 | { | |
7327 | return bfd_openr_iovec (remote_file, target, | |
7328 | remote_bfd_iovec_open, NULL, | |
7329 | remote_bfd_iovec_pread, | |
7330 | remote_bfd_iovec_close, | |
7331 | remote_bfd_iovec_stat); | |
7332 | } | |
7333 | ||
a6b151f1 DJ |
7334 | void |
7335 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
7336 | { | |
7337 | struct cleanup *back_to, *close_cleanup; | |
7338 | int retcode, fd, remote_errno, bytes, io_size; | |
7339 | FILE *file; | |
7340 | gdb_byte *buffer; | |
7341 | int bytes_in_buffer; | |
7342 | int saw_eof; | |
7343 | ULONGEST offset; | |
7344 | ||
7345 | if (!remote_desc) | |
7346 | error (_("command can only be used with remote target")); | |
7347 | ||
7348 | file = fopen (local_file, "rb"); | |
7349 | if (file == NULL) | |
7350 | perror_with_name (local_file); | |
7351 | back_to = make_cleanup (fclose_cleanup, file); | |
7352 | ||
7353 | fd = remote_hostio_open (remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT | |
7354 | | FILEIO_O_TRUNC), | |
7355 | 0700, &remote_errno); | |
7356 | if (fd == -1) | |
7357 | remote_hostio_error (remote_errno); | |
7358 | ||
7359 | /* Send up to this many bytes at once. They won't all fit in the | |
7360 | remote packet limit, so we'll transfer slightly fewer. */ | |
7361 | io_size = get_remote_packet_size (); | |
7362 | buffer = xmalloc (io_size); | |
7363 | make_cleanup (xfree, buffer); | |
7364 | ||
7365 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
7366 | ||
7367 | bytes_in_buffer = 0; | |
7368 | saw_eof = 0; | |
7369 | offset = 0; | |
7370 | while (bytes_in_buffer || !saw_eof) | |
7371 | { | |
7372 | if (!saw_eof) | |
7373 | { | |
7374 | bytes = fread (buffer + bytes_in_buffer, 1, io_size - bytes_in_buffer, | |
7375 | file); | |
7376 | if (bytes == 0) | |
7377 | { | |
7378 | if (ferror (file)) | |
7379 | error (_("Error reading %s."), local_file); | |
7380 | else | |
7381 | { | |
7382 | /* EOF. Unless there is something still in the | |
7383 | buffer from the last iteration, we are done. */ | |
7384 | saw_eof = 1; | |
7385 | if (bytes_in_buffer == 0) | |
7386 | break; | |
7387 | } | |
7388 | } | |
7389 | } | |
7390 | else | |
7391 | bytes = 0; | |
7392 | ||
7393 | bytes += bytes_in_buffer; | |
7394 | bytes_in_buffer = 0; | |
7395 | ||
7396 | retcode = remote_hostio_pwrite (fd, buffer, bytes, offset, &remote_errno); | |
7397 | ||
7398 | if (retcode < 0) | |
7399 | remote_hostio_error (remote_errno); | |
7400 | else if (retcode == 0) | |
7401 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
7402 | else if (retcode < bytes) | |
7403 | { | |
7404 | /* Short write. Save the rest of the read data for the next | |
7405 | write. */ | |
7406 | bytes_in_buffer = bytes - retcode; | |
7407 | memmove (buffer, buffer + retcode, bytes_in_buffer); | |
7408 | } | |
7409 | ||
7410 | offset += retcode; | |
7411 | } | |
7412 | ||
7413 | discard_cleanups (close_cleanup); | |
7414 | if (remote_hostio_close (fd, &remote_errno)) | |
7415 | remote_hostio_error (remote_errno); | |
7416 | ||
7417 | if (from_tty) | |
7418 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
7419 | do_cleanups (back_to); | |
7420 | } | |
7421 | ||
7422 | void | |
7423 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
7424 | { | |
7425 | struct cleanup *back_to, *close_cleanup; | |
7426 | int retcode, fd, remote_errno, bytes, io_size; | |
7427 | FILE *file; | |
7428 | gdb_byte *buffer; | |
7429 | ULONGEST offset; | |
7430 | ||
7431 | if (!remote_desc) | |
7432 | error (_("command can only be used with remote target")); | |
7433 | ||
7434 | fd = remote_hostio_open (remote_file, FILEIO_O_RDONLY, 0, &remote_errno); | |
7435 | if (fd == -1) | |
7436 | remote_hostio_error (remote_errno); | |
7437 | ||
7438 | file = fopen (local_file, "wb"); | |
7439 | if (file == NULL) | |
7440 | perror_with_name (local_file); | |
7441 | back_to = make_cleanup (fclose_cleanup, file); | |
7442 | ||
7443 | /* Send up to this many bytes at once. They won't all fit in the | |
7444 | remote packet limit, so we'll transfer slightly fewer. */ | |
7445 | io_size = get_remote_packet_size (); | |
7446 | buffer = xmalloc (io_size); | |
7447 | make_cleanup (xfree, buffer); | |
7448 | ||
7449 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
7450 | ||
7451 | offset = 0; | |
7452 | while (1) | |
7453 | { | |
7454 | bytes = remote_hostio_pread (fd, buffer, io_size, offset, &remote_errno); | |
7455 | if (bytes == 0) | |
7456 | /* Success, but no bytes, means end-of-file. */ | |
7457 | break; | |
7458 | if (bytes == -1) | |
7459 | remote_hostio_error (remote_errno); | |
7460 | ||
7461 | offset += bytes; | |
7462 | ||
7463 | bytes = fwrite (buffer, 1, bytes, file); | |
7464 | if (bytes == 0) | |
7465 | perror_with_name (local_file); | |
7466 | } | |
7467 | ||
7468 | discard_cleanups (close_cleanup); | |
7469 | if (remote_hostio_close (fd, &remote_errno)) | |
7470 | remote_hostio_error (remote_errno); | |
7471 | ||
7472 | if (from_tty) | |
7473 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
7474 | do_cleanups (back_to); | |
7475 | } | |
7476 | ||
7477 | void | |
7478 | remote_file_delete (const char *remote_file, int from_tty) | |
7479 | { | |
7480 | int retcode, remote_errno; | |
7481 | ||
7482 | if (!remote_desc) | |
7483 | error (_("command can only be used with remote target")); | |
7484 | ||
7485 | retcode = remote_hostio_unlink (remote_file, &remote_errno); | |
7486 | if (retcode == -1) | |
7487 | remote_hostio_error (remote_errno); | |
7488 | ||
7489 | if (from_tty) | |
7490 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
7491 | } | |
7492 | ||
7493 | static void | |
7494 | remote_put_command (char *args, int from_tty) | |
7495 | { | |
7496 | struct cleanup *back_to; | |
7497 | char **argv; | |
7498 | ||
d1a41061 PP |
7499 | if (args == NULL) |
7500 | error_no_arg (_("file to put")); | |
7501 | ||
7502 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
7503 | back_to = make_cleanup_freeargv (argv); |
7504 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
7505 | error (_("Invalid parameters to remote put")); | |
7506 | ||
7507 | remote_file_put (argv[0], argv[1], from_tty); | |
7508 | ||
7509 | do_cleanups (back_to); | |
7510 | } | |
7511 | ||
7512 | static void | |
7513 | remote_get_command (char *args, int from_tty) | |
7514 | { | |
7515 | struct cleanup *back_to; | |
7516 | char **argv; | |
7517 | ||
d1a41061 PP |
7518 | if (args == NULL) |
7519 | error_no_arg (_("file to get")); | |
7520 | ||
7521 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
7522 | back_to = make_cleanup_freeargv (argv); |
7523 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
7524 | error (_("Invalid parameters to remote get")); | |
7525 | ||
7526 | remote_file_get (argv[0], argv[1], from_tty); | |
7527 | ||
7528 | do_cleanups (back_to); | |
7529 | } | |
7530 | ||
7531 | static void | |
7532 | remote_delete_command (char *args, int from_tty) | |
7533 | { | |
7534 | struct cleanup *back_to; | |
7535 | char **argv; | |
7536 | ||
d1a41061 PP |
7537 | if (args == NULL) |
7538 | error_no_arg (_("file to delete")); | |
7539 | ||
7540 | argv = gdb_buildargv (args); | |
a6b151f1 DJ |
7541 | back_to = make_cleanup_freeargv (argv); |
7542 | if (argv[0] == NULL || argv[1] != NULL) | |
7543 | error (_("Invalid parameters to remote delete")); | |
7544 | ||
7545 | remote_file_delete (argv[0], from_tty); | |
7546 | ||
7547 | do_cleanups (back_to); | |
7548 | } | |
7549 | ||
7550 | static void | |
7551 | remote_command (char *args, int from_tty) | |
7552 | { | |
7553 | help_list (remote_cmdlist, "remote ", -1, gdb_stdout); | |
7554 | } | |
7555 | ||
c906108c | 7556 | static void |
fba45db2 | 7557 | init_remote_ops (void) |
c906108c | 7558 | { |
c5aa993b | 7559 | remote_ops.to_shortname = "remote"; |
c906108c | 7560 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 7561 | remote_ops.to_doc = |
c906108c | 7562 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
7563 | Specify the serial device it is connected to\n\ |
7564 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
7565 | remote_ops.to_open = remote_open; |
7566 | remote_ops.to_close = remote_close; | |
c906108c | 7567 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 7568 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 7569 | remote_ops.to_resume = remote_resume; |
c906108c SS |
7570 | remote_ops.to_wait = remote_wait; |
7571 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
7572 | remote_ops.to_store_registers = remote_store_registers; | |
7573 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 7574 | remote_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 7575 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
7576 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
7577 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
7578 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
7579 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
7580 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; | |
7581 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
7582 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
7583 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
7584 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b JM |
7585 | remote_ops.to_kill = remote_kill; |
7586 | remote_ops.to_load = generic_load; | |
c906108c SS |
7587 | remote_ops.to_mourn_inferior = remote_mourn; |
7588 | remote_ops.to_thread_alive = remote_thread_alive; | |
0f71a2f6 | 7589 | remote_ops.to_find_new_threads = remote_threads_info; |
0caabb7e | 7590 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 7591 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
c906108c | 7592 | remote_ops.to_stop = remote_stop; |
4b8a223f | 7593 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 7594 | remote_ops.to_rcmd = remote_rcmd; |
49d03eab | 7595 | remote_ops.to_log_command = serial_log_command; |
38691318 | 7596 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; |
c906108c | 7597 | remote_ops.to_stratum = process_stratum; |
c5aa993b JM |
7598 | remote_ops.to_has_all_memory = 1; |
7599 | remote_ops.to_has_memory = 1; | |
7600 | remote_ops.to_has_stack = 1; | |
7601 | remote_ops.to_has_registers = 1; | |
7602 | remote_ops.to_has_execution = 1; | |
7603 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
7604 | remote_ops.to_magic = OPS_MAGIC; | |
fd79ecee | 7605 | remote_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
7606 | remote_ops.to_flash_erase = remote_flash_erase; |
7607 | remote_ops.to_flash_done = remote_flash_done; | |
29709017 | 7608 | remote_ops.to_read_description = remote_read_description; |
08388c79 | 7609 | remote_ops.to_search_memory = remote_search_memory; |
75c99385 PA |
7610 | remote_ops.to_can_async_p = remote_can_async_p; |
7611 | remote_ops.to_is_async_p = remote_is_async_p; | |
7612 | remote_ops.to_async = remote_async; | |
7613 | remote_ops.to_async_mask = remote_async_mask; | |
7614 | remote_ops.to_terminal_inferior = remote_terminal_inferior; | |
7615 | remote_ops.to_terminal_ours = remote_terminal_ours; | |
c906108c SS |
7616 | } |
7617 | ||
7618 | /* Set up the extended remote vector by making a copy of the standard | |
7619 | remote vector and adding to it. */ | |
7620 | ||
7621 | static void | |
fba45db2 | 7622 | init_extended_remote_ops (void) |
c906108c SS |
7623 | { |
7624 | extended_remote_ops = remote_ops; | |
7625 | ||
0f71a2f6 | 7626 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 7627 | extended_remote_ops.to_longname = |
c906108c | 7628 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 7629 | extended_remote_ops.to_doc = |
c906108c | 7630 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
39237dd1 PA |
7631 | Specify the serial device it is connected to (e.g. /dev/ttya)."; |
7632 | extended_remote_ops.to_open = extended_remote_open; | |
c906108c SS |
7633 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
7634 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
2d717e4f DJ |
7635 | extended_remote_ops.to_detach = extended_remote_detach; |
7636 | extended_remote_ops.to_attach = extended_remote_attach; | |
82f73884 | 7637 | extended_remote_ops.to_kill = extended_remote_kill; |
0f71a2f6 JM |
7638 | } |
7639 | ||
6426a772 JM |
7640 | static int |
7641 | remote_can_async_p (void) | |
7642 | { | |
c6ebd6cf | 7643 | if (!target_async_permitted) |
75c99385 PA |
7644 | /* We only enable async when the user specifically asks for it. */ |
7645 | return 0; | |
7646 | ||
23860348 | 7647 | /* We're async whenever the serial device is. */ |
b84876c2 | 7648 | return remote_async_mask_value && serial_can_async_p (remote_desc); |
6426a772 JM |
7649 | } |
7650 | ||
7651 | static int | |
7652 | remote_is_async_p (void) | |
7653 | { | |
c6ebd6cf | 7654 | if (!target_async_permitted) |
75c99385 PA |
7655 | /* We only enable async when the user specifically asks for it. */ |
7656 | return 0; | |
7657 | ||
23860348 | 7658 | /* We're async whenever the serial device is. */ |
b84876c2 | 7659 | return remote_async_mask_value && serial_is_async_p (remote_desc); |
6426a772 JM |
7660 | } |
7661 | ||
2acceee2 JM |
7662 | /* Pass the SERIAL event on and up to the client. One day this code |
7663 | will be able to delay notifying the client of an event until the | |
23860348 | 7664 | point where an entire packet has been received. */ |
2acceee2 | 7665 | |
2bc416ba | 7666 | static void (*async_client_callback) (enum inferior_event_type event_type, |
23860348 | 7667 | void *context); |
2acceee2 JM |
7668 | static void *async_client_context; |
7669 | static serial_event_ftype remote_async_serial_handler; | |
7670 | ||
6426a772 | 7671 | static void |
819cc324 | 7672 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 7673 | { |
2acceee2 JM |
7674 | /* Don't propogate error information up to the client. Instead let |
7675 | the client find out about the error by querying the target. */ | |
7676 | async_client_callback (INF_REG_EVENT, async_client_context); | |
7677 | } | |
7678 | ||
7679 | static void | |
2bc416ba | 7680 | remote_async (void (*callback) (enum inferior_event_type event_type, |
23860348 | 7681 | void *context), void *context) |
2acceee2 | 7682 | { |
b84876c2 | 7683 | if (remote_async_mask_value == 0) |
8e65ff28 | 7684 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 7685 | _("Calling remote_async when async is masked")); |
ed9a39eb | 7686 | |
2acceee2 JM |
7687 | if (callback != NULL) |
7688 | { | |
2cd58942 | 7689 | serial_async (remote_desc, remote_async_serial_handler, NULL); |
2acceee2 JM |
7690 | async_client_callback = callback; |
7691 | async_client_context = context; | |
7692 | } | |
7693 | else | |
2cd58942 | 7694 | serial_async (remote_desc, NULL, NULL); |
6426a772 JM |
7695 | } |
7696 | ||
b84876c2 PA |
7697 | static int |
7698 | remote_async_mask (int new_mask) | |
7699 | { | |
7700 | int curr_mask = remote_async_mask_value; | |
7701 | remote_async_mask_value = new_mask; | |
7702 | return curr_mask; | |
7703 | } | |
7704 | ||
5a2468f5 | 7705 | static void |
c2d11a7d | 7706 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 7707 | { |
427c3a89 | 7708 | help_list (remote_set_cmdlist, "set remote ", -1, gdb_stdout); |
5a2468f5 JM |
7709 | } |
7710 | ||
d471ea57 AC |
7711 | static void |
7712 | show_remote_cmd (char *args, int from_tty) | |
7713 | { | |
37a105a1 | 7714 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 7715 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 DJ |
7716 | struct cleanup *showlist_chain; |
7717 | struct cmd_list_element *list = remote_show_cmdlist; | |
7718 | ||
7719 | showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist"); | |
7720 | for (; list != NULL; list = list->next) | |
7721 | if (strcmp (list->name, "Z-packet") == 0) | |
7722 | continue; | |
427c3a89 DJ |
7723 | else if (list->type == not_set_cmd) |
7724 | /* Alias commands are exactly like the original, except they | |
7725 | don't have the normal type. */ | |
7726 | continue; | |
7727 | else | |
37a105a1 DJ |
7728 | { |
7729 | struct cleanup *option_chain | |
7730 | = make_cleanup_ui_out_tuple_begin_end (uiout, "option"); | |
7731 | ui_out_field_string (uiout, "name", list->name); | |
7732 | ui_out_text (uiout, ": "); | |
427c3a89 DJ |
7733 | if (list->type == show_cmd) |
7734 | do_setshow_command ((char *) NULL, from_tty, list); | |
7735 | else | |
7736 | cmd_func (list, NULL, from_tty); | |
37a105a1 DJ |
7737 | /* Close the tuple. */ |
7738 | do_cleanups (option_chain); | |
7739 | } | |
427c3a89 DJ |
7740 | |
7741 | /* Close the tuple. */ | |
7742 | do_cleanups (showlist_chain); | |
d471ea57 | 7743 | } |
5a2468f5 | 7744 | |
0f71a2f6 | 7745 | |
23860348 | 7746 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
7747 | static void |
7748 | remote_new_objfile (struct objfile *objfile) | |
7749 | { | |
23860348 | 7750 | if (remote_desc != 0) /* Have a remote connection. */ |
06d3b283 | 7751 | remote_check_symbols (objfile); |
dc8acb97 MS |
7752 | } |
7753 | ||
c906108c | 7754 | void |
fba45db2 | 7755 | _initialize_remote (void) |
c906108c | 7756 | { |
ea9c271d DJ |
7757 | struct remote_state *rs; |
7758 | ||
0f71a2f6 | 7759 | /* architecture specific data */ |
2bc416ba | 7760 | remote_gdbarch_data_handle = |
23860348 | 7761 | gdbarch_data_register_post_init (init_remote_state); |
29709017 DJ |
7762 | remote_g_packet_data_handle = |
7763 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 7764 | |
ea9c271d DJ |
7765 | /* Initialize the per-target state. At the moment there is only one |
7766 | of these, not one per target. Only one target is active at a | |
7767 | time. The default buffer size is unimportant; it will be expanded | |
7768 | whenever a larger buffer is needed. */ | |
0b83947e | 7769 | rs = get_remote_state_raw (); |
ea9c271d DJ |
7770 | rs->buf_size = 400; |
7771 | rs->buf = xmalloc (rs->buf_size); | |
7772 | ||
c906108c SS |
7773 | init_remote_ops (); |
7774 | add_target (&remote_ops); | |
7775 | ||
7776 | init_extended_remote_ops (); | |
7777 | add_target (&extended_remote_ops); | |
cce74817 | 7778 | |
dc8acb97 | 7779 | /* Hook into new objfile notification. */ |
06d3b283 | 7780 | observer_attach_new_objfile (remote_new_objfile); |
dc8acb97 | 7781 | |
b803fb0f DJ |
7782 | /* Set up signal handlers. */ |
7783 | sigint_remote_token = | |
7784 | create_async_signal_handler (async_remote_interrupt, NULL); | |
7785 | sigint_remote_twice_token = | |
7786 | create_async_signal_handler (inferior_event_handler_wrapper, NULL); | |
7787 | ||
c906108c SS |
7788 | #if 0 |
7789 | init_remote_threadtests (); | |
7790 | #endif | |
7791 | ||
23860348 | 7792 | /* set/show remote ... */ |
d471ea57 | 7793 | |
1bedd215 | 7794 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
7795 | Remote protocol specific variables\n\ |
7796 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 7797 | the packets being used"), |
cff3e48b | 7798 | &remote_set_cmdlist, "set remote ", |
23860348 | 7799 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 7800 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
7801 | Remote protocol specific variables\n\ |
7802 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 7803 | the packets being used"), |
cff3e48b | 7804 | &remote_show_cmdlist, "show remote ", |
23860348 | 7805 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 7806 | |
1a966eab AC |
7807 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
7808 | Compare section data on target to the exec file.\n\ | |
7809 | Argument is a single section name (default: all loaded sections)."), | |
c906108c SS |
7810 | &cmdlist); |
7811 | ||
1a966eab AC |
7812 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
7813 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
7814 | maintenance packet TEXT\n\ |
7815 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
7816 | this command sends the string TEXT to the inferior, and displays the\n\ | |
7817 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 7818 | terminating `#' character and checksum."), |
c906108c SS |
7819 | &maintenancelist); |
7820 | ||
7915a72c AC |
7821 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
7822 | Set whether to send break if interrupted."), _("\ | |
7823 | Show whether to send break if interrupted."), _("\ | |
7824 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
2c5b56ce | 7825 | NULL, NULL, /* FIXME: i18n: Whether to send break if interrupted is %s. */ |
e707bbc2 | 7826 | &setlist, &showlist); |
c906108c | 7827 | |
23860348 | 7828 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 7829 | |
1a966eab AC |
7830 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
7831 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 7832 | &setlist); |
1a966eab AC |
7833 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
7834 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
7835 | &showlist); |
7836 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
7837 | set_memory_write_packet_size, _("\ |
7838 | Set the maximum number of bytes per memory-write packet.\n\ | |
7839 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
7840 | default packet size. The actual limit is further reduced\n\ | |
7841 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
7842 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
7843 | &remote_set_cmdlist); |
7844 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
7845 | set_memory_read_packet_size, _("\ |
7846 | Set the maximum number of bytes per memory-read packet.\n\ | |
7847 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
7848 | default packet size. The actual limit is further reduced\n\ | |
7849 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
7850 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
7851 | &remote_set_cmdlist); |
7852 | add_cmd ("memory-write-packet-size", no_class, | |
7853 | show_memory_write_packet_size, | |
1a966eab | 7854 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
7855 | &remote_show_cmdlist); |
7856 | add_cmd ("memory-read-packet-size", no_class, | |
7857 | show_memory_read_packet_size, | |
1a966eab | 7858 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 7859 | &remote_show_cmdlist); |
c906108c | 7860 | |
b3f42336 | 7861 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
7862 | &remote_hw_watchpoint_limit, _("\ |
7863 | Set the maximum number of target hardware watchpoints."), _("\ | |
7864 | Show the maximum number of target hardware watchpoints."), _("\ | |
7865 | Specify a negative limit for unlimited."), | |
2c5b56ce | 7866 | NULL, NULL, /* FIXME: i18n: The maximum number of target hardware watchpoints is %s. */ |
b3f42336 AC |
7867 | &remote_set_cmdlist, &remote_show_cmdlist); |
7868 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, | |
7915a72c AC |
7869 | &remote_hw_breakpoint_limit, _("\ |
7870 | Set the maximum number of target hardware breakpoints."), _("\ | |
7871 | Show the maximum number of target hardware breakpoints."), _("\ | |
7872 | Specify a negative limit for unlimited."), | |
2c5b56ce | 7873 | NULL, NULL, /* FIXME: i18n: The maximum number of target hardware breakpoints is %s. */ |
b3f42336 | 7874 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 7875 | |
4d28ad1e AC |
7876 | add_setshow_integer_cmd ("remoteaddresssize", class_obscure, |
7877 | &remote_address_size, _("\ | |
7878 | Set the maximum size of the address (in bits) in a memory packet."), _("\ | |
7879 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
7880 | NULL, | |
7881 | NULL, /* FIXME: i18n: */ | |
7882 | &setlist, &showlist); | |
c906108c | 7883 | |
444abaca | 7884 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 7885 | "X", "binary-download", 1); |
0f71a2f6 | 7886 | |
444abaca | 7887 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 7888 | "vCont", "verbose-resume", 0); |
506fb367 | 7889 | |
89be2091 DJ |
7890 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
7891 | "QPassSignals", "pass-signals", 0); | |
7892 | ||
444abaca | 7893 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 7894 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 7895 | |
444abaca | 7896 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 7897 | "P", "set-register", 1); |
d471ea57 | 7898 | |
444abaca | 7899 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 7900 | "p", "fetch-register", 1); |
b96ec7ac | 7901 | |
444abaca | 7902 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 7903 | "Z0", "software-breakpoint", 0); |
d471ea57 | 7904 | |
444abaca | 7905 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 7906 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 7907 | |
444abaca | 7908 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 7909 | "Z2", "write-watchpoint", 0); |
d471ea57 | 7910 | |
444abaca | 7911 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 7912 | "Z3", "read-watchpoint", 0); |
d471ea57 | 7913 | |
444abaca | 7914 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 7915 | "Z4", "access-watchpoint", 0); |
d471ea57 | 7916 | |
0876f84a DJ |
7917 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
7918 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 7919 | |
23181151 DJ |
7920 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
7921 | "qXfer:features:read", "target-features", 0); | |
7922 | ||
cfa9d6d9 DJ |
7923 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
7924 | "qXfer:libraries:read", "library-info", 0); | |
7925 | ||
fd79ecee DJ |
7926 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
7927 | "qXfer:memory-map:read", "memory-map", 0); | |
7928 | ||
0e7f50da UW |
7929 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_read], |
7930 | "qXfer:spu:read", "read-spu-object", 0); | |
7931 | ||
7932 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_write], | |
7933 | "qXfer:spu:write", "write-spu-object", 0); | |
7934 | ||
444abaca | 7935 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 7936 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
7937 | 0); |
7938 | ||
be2a5f71 DJ |
7939 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
7940 | "qSupported", "supported-packets", 0); | |
7941 | ||
08388c79 DE |
7942 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory], |
7943 | "qSearch:memory", "search-memory", 0); | |
7944 | ||
a6b151f1 DJ |
7945 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
7946 | "vFile:open", "hostio-open", 0); | |
7947 | ||
7948 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
7949 | "vFile:pread", "hostio-pread", 0); | |
7950 | ||
7951 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
7952 | "vFile:pwrite", "hostio-pwrite", 0); | |
7953 | ||
7954 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
7955 | "vFile:close", "hostio-close", 0); | |
7956 | ||
7957 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
7958 | "vFile:unlink", "hostio-unlink", 0); | |
7959 | ||
2d717e4f DJ |
7960 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
7961 | "vAttach", "attach", 0); | |
7962 | ||
7963 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
7964 | "vRun", "run", 0); | |
7965 | ||
a6f3e723 SL |
7966 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode], |
7967 | "QStartNoAckMode", "noack", 0); | |
7968 | ||
82f73884 PA |
7969 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill], |
7970 | "vKill", "kill", 0); | |
7971 | ||
37a105a1 DJ |
7972 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
7973 | Z sub-packet has its own set and show commands, but users may | |
7974 | have sets to this variable in their .gdbinit files (or in their | |
7975 | documentation). */ | |
e9e68a56 | 7976 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
7977 | &remote_Z_packet_detect, _("\ |
7978 | Set use of remote protocol `Z' packets"), _("\ | |
7979 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 7980 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 7981 | packets."), |
e9e68a56 | 7982 | set_remote_protocol_Z_packet_cmd, |
2c5b56ce | 7983 | show_remote_protocol_Z_packet_cmd, /* FIXME: i18n: Use of remote protocol `Z' packets is %s. */ |
e9e68a56 | 7984 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 7985 | |
a6b151f1 DJ |
7986 | add_prefix_cmd ("remote", class_files, remote_command, _("\ |
7987 | Manipulate files on the remote system\n\ | |
7988 | Transfer files to and from the remote target system."), | |
7989 | &remote_cmdlist, "remote ", | |
7990 | 0 /* allow-unknown */, &cmdlist); | |
7991 | ||
7992 | add_cmd ("put", class_files, remote_put_command, | |
7993 | _("Copy a local file to the remote system."), | |
7994 | &remote_cmdlist); | |
7995 | ||
7996 | add_cmd ("get", class_files, remote_get_command, | |
7997 | _("Copy a remote file to the local system."), | |
7998 | &remote_cmdlist); | |
7999 | ||
8000 | add_cmd ("delete", class_files, remote_delete_command, | |
8001 | _("Delete a remote file."), | |
8002 | &remote_cmdlist); | |
8003 | ||
2d717e4f DJ |
8004 | remote_exec_file = xstrdup (""); |
8005 | add_setshow_string_noescape_cmd ("exec-file", class_files, | |
8006 | &remote_exec_file, _("\ | |
8007 | Set the remote pathname for \"run\""), _("\ | |
8008 | Show the remote pathname for \"run\""), NULL, NULL, NULL, | |
8009 | &remote_set_cmdlist, &remote_show_cmdlist); | |
8010 | ||
449092f6 CV |
8011 | /* Eventually initialize fileio. See fileio.c */ |
8012 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
79d7f229 PA |
8013 | |
8014 | /* Take advantage of the fact that the LWP field is not used, to tag | |
8015 | special ptids with it set to != 0. */ | |
82f73884 PA |
8016 | magic_null_ptid = ptid_build (42000, 1, -1); |
8017 | not_sent_ptid = ptid_build (42000, 1, -2); | |
8018 | any_thread_ptid = ptid_build (42000, 1, 0); | |
c906108c | 8019 | } |