Commit | Line | Data |
---|---|---|
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" |
449092f6 | 62 | |
fd79ecee DJ |
63 | #include "memory-map.h" |
64 | ||
6765f3e5 DJ |
65 | /* The size to align memory write packets, when practical. The protocol |
66 | does not guarantee any alignment, and gdb will generate short | |
67 | writes and unaligned writes, but even as a best-effort attempt this | |
68 | can improve bulk transfers. For instance, if a write is misaligned | |
69 | relative to the target's data bus, the stub may need to make an extra | |
70 | round trip fetching data from the target. This doesn't make a | |
71 | huge difference, but it's easy to do, so we try to be helpful. | |
72 | ||
73 | The alignment chosen is arbitrary; usually data bus width is | |
74 | important here, not the possibly larger cache line size. */ | |
75 | enum { REMOTE_ALIGN_WRITES = 16 }; | |
76 | ||
23860348 | 77 | /* Prototypes for local functions. */ |
6426a772 JM |
78 | static void cleanup_sigint_signal_handler (void *dummy); |
79 | static void initialize_sigint_signal_handler (void); | |
6d820c5c | 80 | static int getpkt_sane (char **buf, long *sizeof_buf, int forever); |
6426a772 | 81 | |
a14ed312 KB |
82 | static void handle_remote_sigint (int); |
83 | static void handle_remote_sigint_twice (int); | |
84 | static void async_remote_interrupt (gdb_client_data); | |
85 | void async_remote_interrupt_twice (gdb_client_data); | |
43ff13b4 | 86 | |
a14ed312 | 87 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 88 | |
316f2060 | 89 | static void remote_prepare_to_store (struct regcache *regcache); |
c906108c | 90 | |
56be3814 | 91 | static void remote_fetch_registers (struct regcache *regcache, int regno); |
c906108c | 92 | |
39f77062 KB |
93 | static void remote_resume (ptid_t ptid, int step, |
94 | enum target_signal siggnal); | |
95 | static void remote_async_resume (ptid_t ptid, int step, | |
a14ed312 | 96 | enum target_signal siggnal); |
a14ed312 KB |
97 | static void remote_open (char *name, int from_tty); |
98 | static void remote_async_open (char *name, int from_tty); | |
c906108c | 99 | |
a14ed312 KB |
100 | static void extended_remote_open (char *name, int from_tty); |
101 | static void extended_remote_async_open (char *name, int from_tty); | |
c906108c | 102 | |
92d1e331 DJ |
103 | static void remote_open_1 (char *, int, struct target_ops *, int extended_p, |
104 | int async_p); | |
c906108c | 105 | |
a14ed312 | 106 | static void remote_close (int quitting); |
c906108c | 107 | |
56be3814 | 108 | static void remote_store_registers (struct regcache *regcache, int regno); |
c906108c | 109 | |
a14ed312 KB |
110 | static void remote_mourn (void); |
111 | static void remote_async_mourn (void); | |
c906108c | 112 | |
a14ed312 | 113 | static void extended_remote_restart (void); |
c906108c | 114 | |
a14ed312 | 115 | static void extended_remote_mourn (void); |
c906108c | 116 | |
a14ed312 | 117 | static void remote_mourn_1 (struct target_ops *); |
c906108c | 118 | |
6d820c5c | 119 | static void remote_send (char **buf, long *sizeof_buf_p); |
c906108c | 120 | |
a14ed312 | 121 | static int readchar (int timeout); |
c906108c | 122 | |
39f77062 KB |
123 | static ptid_t remote_wait (ptid_t ptid, |
124 | struct target_waitstatus *status); | |
125 | static ptid_t remote_async_wait (ptid_t ptid, | |
126 | struct target_waitstatus *status); | |
c906108c | 127 | |
a14ed312 KB |
128 | static void remote_kill (void); |
129 | static void remote_async_kill (void); | |
c906108c | 130 | |
a14ed312 | 131 | static int tohex (int nib); |
c906108c | 132 | |
a14ed312 | 133 | static void remote_detach (char *args, int from_tty); |
c906108c | 134 | |
a14ed312 | 135 | static void remote_interrupt (int signo); |
c906108c | 136 | |
a14ed312 | 137 | static void remote_interrupt_twice (int signo); |
7a292a7a | 138 | |
a14ed312 | 139 | static void interrupt_query (void); |
c906108c | 140 | |
a14ed312 | 141 | static void set_thread (int, int); |
c906108c | 142 | |
39f77062 | 143 | static int remote_thread_alive (ptid_t); |
c906108c | 144 | |
a14ed312 | 145 | static void get_offsets (void); |
c906108c | 146 | |
6d820c5c DJ |
147 | static void skip_frame (void); |
148 | ||
149 | static long read_frame (char **buf_p, long *sizeof_buf); | |
c906108c | 150 | |
a14ed312 | 151 | static int hexnumlen (ULONGEST num); |
c906108c | 152 | |
a14ed312 | 153 | static void init_remote_ops (void); |
c906108c | 154 | |
a14ed312 | 155 | static void init_extended_remote_ops (void); |
c906108c | 156 | |
a14ed312 | 157 | static void remote_stop (void); |
c906108c | 158 | |
a14ed312 | 159 | static int ishex (int ch, int *val); |
c906108c | 160 | |
a14ed312 | 161 | static int stubhex (int ch); |
c906108c | 162 | |
a14ed312 | 163 | static int hexnumstr (char *, ULONGEST); |
c906108c | 164 | |
a14ed312 | 165 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 166 | |
a14ed312 | 167 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 168 | |
a14ed312 | 169 | static void print_packet (char *); |
c906108c | 170 | |
a14ed312 | 171 | static unsigned long crc32 (unsigned char *, int, unsigned int); |
c906108c | 172 | |
a14ed312 | 173 | static void compare_sections_command (char *, int); |
c906108c | 174 | |
a14ed312 | 175 | static void packet_command (char *, int); |
c906108c | 176 | |
a14ed312 | 177 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 178 | |
39f77062 | 179 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 180 | |
a14ed312 | 181 | static void remote_find_new_threads (void); |
c906108c | 182 | |
a14ed312 | 183 | static void record_currthread (int currthread); |
c906108c | 184 | |
30559e10 | 185 | static int fromhex (int a); |
c906108c | 186 | |
cfd77fa1 | 187 | static int hex2bin (const char *hex, gdb_byte *bin, int count); |
c906108c | 188 | |
cfd77fa1 | 189 | static int bin2hex (const gdb_byte *bin, char *hex, int count); |
234fa6d1 | 190 | |
a14ed312 | 191 | static int putpkt_binary (char *buf, int cnt); |
c906108c | 192 | |
a14ed312 | 193 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 194 | |
5a2468f5 | 195 | struct packet_config; |
5a2468f5 | 196 | |
a14ed312 | 197 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 198 | |
d471ea57 | 199 | static void update_packet_config (struct packet_config *config); |
5a2468f5 | 200 | |
bb572ddd DJ |
201 | static void set_remote_protocol_packet_cmd (char *args, int from_tty, |
202 | struct cmd_list_element *c); | |
203 | ||
204 | static void show_remote_protocol_packet_cmd (struct ui_file *file, | |
205 | int from_tty, | |
206 | struct cmd_list_element *c, | |
207 | const char *value); | |
208 | ||
a14ed312 | 209 | void _initialize_remote (void); |
c906108c | 210 | |
a6b151f1 DJ |
211 | /* For "remote". */ |
212 | ||
213 | static struct cmd_list_element *remote_cmdlist; | |
214 | ||
bb572ddd DJ |
215 | /* For "set remote" and "show remote". */ |
216 | ||
217 | static struct cmd_list_element *remote_set_cmdlist; | |
218 | static struct cmd_list_element *remote_show_cmdlist; | |
219 | ||
ea9c271d DJ |
220 | /* Description of the remote protocol state for the currently |
221 | connected target. This is per-target state, and independent of the | |
222 | selected architecture. */ | |
223 | ||
224 | struct remote_state | |
225 | { | |
226 | /* A buffer to use for incoming packets, and its current size. The | |
227 | buffer is grown dynamically for larger incoming packets. | |
228 | Outgoing packets may also be constructed in this buffer. | |
229 | BUF_SIZE is always at least REMOTE_PACKET_SIZE; | |
230 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing | |
231 | packets. */ | |
232 | char *buf; | |
233 | long buf_size; | |
be2a5f71 DJ |
234 | |
235 | /* If we negotiated packet size explicitly (and thus can bypass | |
236 | heuristics for the largest packet size that will not overflow | |
237 | a buffer in the stub), this will be set to that packet size. | |
238 | Otherwise zero, meaning to use the guessed size. */ | |
239 | long explicit_packet_size; | |
ea9c271d DJ |
240 | }; |
241 | ||
242 | /* This data could be associated with a target, but we do not always | |
243 | have access to the current target when we need it, so for now it is | |
244 | static. This will be fine for as long as only one target is in use | |
245 | at a time. */ | |
246 | static struct remote_state remote_state; | |
247 | ||
248 | static struct remote_state * | |
0b83947e | 249 | get_remote_state_raw (void) |
ea9c271d DJ |
250 | { |
251 | return &remote_state; | |
252 | } | |
253 | ||
254 | /* Description of the remote protocol for a given architecture. */ | |
d01949b6 | 255 | |
ad10f812 AC |
256 | struct packet_reg |
257 | { | |
258 | long offset; /* Offset into G packet. */ | |
259 | long regnum; /* GDB's internal register number. */ | |
260 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 261 | int in_g_packet; /* Always part of G packet. */ |
2bc416ba | 262 | /* long size in bytes; == register_size (current_gdbarch, regnum); |
23860348 | 263 | at present. */ |
c9f4d572 UW |
264 | /* char *name; == gdbarch_register_name (current_gdbarch, regnum); |
265 | at present. */ | |
ad10f812 AC |
266 | }; |
267 | ||
ea9c271d | 268 | struct remote_arch_state |
d01949b6 | 269 | { |
ad10f812 AC |
270 | /* Description of the remote protocol registers. */ |
271 | long sizeof_g_packet; | |
b323314b AC |
272 | |
273 | /* Description of the remote protocol registers indexed by REGNUM | |
f57d151a | 274 | (making an array gdbarch_num_regs in size). */ |
b323314b | 275 | struct packet_reg *regs; |
ad10f812 | 276 | |
d01949b6 AC |
277 | /* This is the size (in chars) of the first response to the ``g'' |
278 | packet. It is used as a heuristic when determining the maximum | |
279 | size of memory-read and memory-write packets. A target will | |
280 | typically only reserve a buffer large enough to hold the ``g'' | |
281 | packet. The size does not include packet overhead (headers and | |
23860348 | 282 | trailers). */ |
d01949b6 AC |
283 | long actual_register_packet_size; |
284 | ||
285 | /* This is the maximum size (in chars) of a non read/write packet. | |
23860348 | 286 | It is also used as a cap on the size of read/write packets. */ |
d01949b6 AC |
287 | long remote_packet_size; |
288 | }; | |
289 | ||
3c3bea1c | 290 | |
d01949b6 AC |
291 | /* Handle for retreving the remote protocol data from gdbarch. */ |
292 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
293 | ||
ea9c271d DJ |
294 | static struct remote_arch_state * |
295 | get_remote_arch_state (void) | |
d01949b6 | 296 | { |
451fbdda | 297 | return gdbarch_data (current_gdbarch, remote_gdbarch_data_handle); |
d01949b6 AC |
298 | } |
299 | ||
0b83947e DJ |
300 | /* Fetch the global remote target state. */ |
301 | ||
302 | static struct remote_state * | |
303 | get_remote_state (void) | |
304 | { | |
305 | /* Make sure that the remote architecture state has been | |
306 | initialized, because doing so might reallocate rs->buf. Any | |
307 | function which calls getpkt also needs to be mindful of changes | |
308 | to rs->buf, but this call limits the number of places which run | |
309 | into trouble. */ | |
310 | get_remote_arch_state (); | |
311 | ||
312 | return get_remote_state_raw (); | |
313 | } | |
314 | ||
74ca34ce DJ |
315 | static int |
316 | compare_pnums (const void *lhs_, const void *rhs_) | |
317 | { | |
318 | const struct packet_reg * const *lhs = lhs_; | |
319 | const struct packet_reg * const *rhs = rhs_; | |
320 | ||
321 | if ((*lhs)->pnum < (*rhs)->pnum) | |
322 | return -1; | |
323 | else if ((*lhs)->pnum == (*rhs)->pnum) | |
324 | return 0; | |
325 | else | |
326 | return 1; | |
327 | } | |
328 | ||
d01949b6 AC |
329 | static void * |
330 | init_remote_state (struct gdbarch *gdbarch) | |
331 | { | |
74ca34ce | 332 | int regnum, num_remote_regs, offset; |
0b83947e | 333 | struct remote_state *rs = get_remote_state_raw (); |
ea9c271d | 334 | struct remote_arch_state *rsa; |
74ca34ce | 335 | struct packet_reg **remote_regs; |
ea9c271d DJ |
336 | |
337 | rsa = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_arch_state); | |
d01949b6 | 338 | |
123dc839 DJ |
339 | /* Use the architecture to build a regnum<->pnum table, which will be |
340 | 1:1 unless a feature set specifies otherwise. */ | |
f57d151a | 341 | rsa->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, |
4a22f64d | 342 | gdbarch_num_regs (gdbarch), |
f57d151a | 343 | struct packet_reg); |
4a22f64d | 344 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) |
ad10f812 | 345 | { |
ea9c271d | 346 | struct packet_reg *r = &rsa->regs[regnum]; |
baef701f | 347 | |
4a22f64d | 348 | if (register_size (gdbarch, regnum) == 0) |
baef701f DJ |
349 | /* Do not try to fetch zero-sized (placeholder) registers. */ |
350 | r->pnum = -1; | |
351 | else | |
352 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
353 | ||
b323314b | 354 | r->regnum = regnum; |
74ca34ce DJ |
355 | } |
356 | ||
357 | /* Define the g/G packet format as the contents of each register | |
358 | with a remote protocol number, in order of ascending protocol | |
359 | number. */ | |
360 | ||
4a22f64d UW |
361 | remote_regs = alloca (gdbarch_num_regs (gdbarch) |
362 | * sizeof (struct packet_reg *)); | |
f57d151a | 363 | for (num_remote_regs = 0, regnum = 0; |
4a22f64d | 364 | regnum < gdbarch_num_regs (gdbarch); |
f57d151a | 365 | regnum++) |
74ca34ce DJ |
366 | if (rsa->regs[regnum].pnum != -1) |
367 | remote_regs[num_remote_regs++] = &rsa->regs[regnum]; | |
7d58c67d | 368 | |
74ca34ce DJ |
369 | qsort (remote_regs, num_remote_regs, sizeof (struct packet_reg *), |
370 | compare_pnums); | |
371 | ||
372 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
373 | { | |
374 | remote_regs[regnum]->in_g_packet = 1; | |
375 | remote_regs[regnum]->offset = offset; | |
4a22f64d | 376 | offset += register_size (gdbarch, remote_regs[regnum]->regnum); |
ad10f812 AC |
377 | } |
378 | ||
74ca34ce DJ |
379 | /* Record the maximum possible size of the g packet - it may turn out |
380 | to be smaller. */ | |
381 | rsa->sizeof_g_packet = offset; | |
382 | ||
d01949b6 AC |
383 | /* Default maximum number of characters in a packet body. Many |
384 | remote stubs have a hardwired buffer size of 400 bytes | |
385 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
386 | as the maximum packet-size to ensure that the packet and an extra | |
387 | NUL character can always fit in the buffer. This stops GDB | |
388 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d DJ |
389 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
390 | rsa->remote_packet_size = 400 - 1; | |
d01949b6 | 391 | |
ea9c271d DJ |
392 | /* This one is filled in when a ``g'' packet is received. */ |
393 | rsa->actual_register_packet_size = 0; | |
394 | ||
395 | /* Should rsa->sizeof_g_packet needs more space than the | |
ad10f812 AC |
396 | default, adjust the size accordingly. Remember that each byte is |
397 | encoded as two characters. 32 is the overhead for the packet | |
398 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 399 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 400 | little. */ |
ea9c271d DJ |
401 | if (rsa->sizeof_g_packet > ((rsa->remote_packet_size - 32) / 2)) |
402 | rsa->remote_packet_size = (rsa->sizeof_g_packet * 2 + 32); | |
802188a7 | 403 | |
ea9c271d DJ |
404 | /* Make sure that the packet buffer is plenty big enough for |
405 | this architecture. */ | |
406 | if (rs->buf_size < rsa->remote_packet_size) | |
407 | { | |
408 | rs->buf_size = 2 * rsa->remote_packet_size; | |
7fca722e | 409 | rs->buf = xrealloc (rs->buf, rs->buf_size); |
ea9c271d | 410 | } |
6d820c5c | 411 | |
ea9c271d DJ |
412 | return rsa; |
413 | } | |
414 | ||
415 | /* Return the current allowed size of a remote packet. This is | |
416 | inferred from the current architecture, and should be used to | |
417 | limit the length of outgoing packets. */ | |
418 | static long | |
419 | get_remote_packet_size (void) | |
420 | { | |
be2a5f71 | 421 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
422 | struct remote_arch_state *rsa = get_remote_arch_state (); |
423 | ||
be2a5f71 DJ |
424 | if (rs->explicit_packet_size) |
425 | return rs->explicit_packet_size; | |
426 | ||
ea9c271d | 427 | return rsa->remote_packet_size; |
d01949b6 AC |
428 | } |
429 | ||
ad10f812 | 430 | static struct packet_reg * |
ea9c271d | 431 | packet_reg_from_regnum (struct remote_arch_state *rsa, long regnum) |
ad10f812 | 432 | { |
f57d151a | 433 | if (regnum < 0 && regnum >= gdbarch_num_regs (current_gdbarch)) |
b323314b AC |
434 | return NULL; |
435 | else | |
ad10f812 | 436 | { |
ea9c271d | 437 | struct packet_reg *r = &rsa->regs[regnum]; |
b323314b AC |
438 | gdb_assert (r->regnum == regnum); |
439 | return r; | |
ad10f812 | 440 | } |
ad10f812 AC |
441 | } |
442 | ||
443 | static struct packet_reg * | |
ea9c271d | 444 | packet_reg_from_pnum (struct remote_arch_state *rsa, LONGEST pnum) |
ad10f812 | 445 | { |
b323314b | 446 | int i; |
f57d151a | 447 | for (i = 0; i < gdbarch_num_regs (current_gdbarch); i++) |
ad10f812 | 448 | { |
ea9c271d | 449 | struct packet_reg *r = &rsa->regs[i]; |
b323314b AC |
450 | if (r->pnum == pnum) |
451 | return r; | |
ad10f812 AC |
452 | } |
453 | return NULL; | |
d01949b6 AC |
454 | } |
455 | ||
3c3bea1c GS |
456 | /* FIXME: graces/2002-08-08: These variables should eventually be |
457 | bound to an instance of the target object (as in gdbarch-tdep()), | |
458 | when such a thing exists. */ | |
459 | ||
460 | /* This is set to the data address of the access causing the target | |
461 | to stop for a watchpoint. */ | |
462 | static CORE_ADDR remote_watch_data_address; | |
463 | ||
94e08568 | 464 | /* This is non-zero if target stopped for a watchpoint. */ |
3c3bea1c GS |
465 | static int remote_stopped_by_watchpoint_p; |
466 | ||
c906108c SS |
467 | static struct target_ops remote_ops; |
468 | ||
469 | static struct target_ops extended_remote_ops; | |
470 | ||
43ff13b4 | 471 | /* Temporary target ops. Just like the remote_ops and |
23860348 | 472 | extended_remote_ops, but with asynchronous support. */ |
43ff13b4 JM |
473 | static struct target_ops remote_async_ops; |
474 | ||
475 | static struct target_ops extended_async_remote_ops; | |
476 | ||
6426a772 JM |
477 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
478 | ``forever'' still use the normal timeout mechanism. This is | |
479 | currently used by the ASYNC code to guarentee that target reads | |
480 | during the initial connect always time-out. Once getpkt has been | |
481 | modified to return a timeout indication and, in turn | |
482 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 483 | this can go away. */ |
6426a772 JM |
484 | static int wait_forever_enabled_p = 1; |
485 | ||
486 | ||
c906108c SS |
487 | /* This variable chooses whether to send a ^C or a break when the user |
488 | requests program interruption. Although ^C is usually what remote | |
489 | systems expect, and that is the default here, sometimes a break is | |
490 | preferable instead. */ | |
491 | ||
492 | static int remote_break; | |
493 | ||
c906108c SS |
494 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
495 | remote_open knows that we don't have a file open when the program | |
496 | starts. */ | |
819cc324 | 497 | static struct serial *remote_desc = NULL; |
c906108c | 498 | |
c906108c SS |
499 | /* This variable sets the number of bits in an address that are to be |
500 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
501 | leading zeros, the entire address would be sent. This variable | |
502 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The | |
503 | initial implementation of remote.c restricted the address sent in | |
504 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
505 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
506 | address was never sent. Since fixing this bug may cause a break in | |
507 | some remote targets this variable is principly provided to | |
23860348 | 508 | facilitate backward compatibility. */ |
c906108c SS |
509 | |
510 | static int remote_address_size; | |
511 | ||
6426a772 JM |
512 | /* Tempoary to track who currently owns the terminal. See |
513 | target_async_terminal_* for more details. */ | |
514 | ||
515 | static int remote_async_terminal_ours_p; | |
516 | ||
11cf8741 | 517 | \f |
11cf8741 | 518 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
519 | memory read/write packet. MIN (rsa->remote_packet_size, |
520 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 521 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
522 | (speed up transfers). The variables ``preferred_*'' (the user |
523 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 524 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
525 | |
526 | struct memory_packet_config | |
527 | { | |
528 | char *name; | |
529 | long size; | |
530 | int fixed_p; | |
531 | }; | |
532 | ||
533 | /* Compute the current size of a read/write packet. Since this makes | |
534 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
535 | ||
536 | static long | |
537 | get_memory_packet_size (struct memory_packet_config *config) | |
538 | { | |
d01949b6 | 539 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
540 | struct remote_arch_state *rsa = get_remote_arch_state (); |
541 | ||
11cf8741 JM |
542 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk |
543 | law?) that some hosts don't cope very well with large alloca() | |
544 | calls. Eventually the alloca() code will be replaced by calls to | |
545 | xmalloc() and make_cleanups() allowing this restriction to either | |
23860348 | 546 | be lifted or removed. */ |
11cf8741 JM |
547 | #ifndef MAX_REMOTE_PACKET_SIZE |
548 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
549 | #endif | |
3de11b2e | 550 | /* NOTE: 20 ensures we can write at least one byte. */ |
11cf8741 | 551 | #ifndef MIN_REMOTE_PACKET_SIZE |
3de11b2e | 552 | #define MIN_REMOTE_PACKET_SIZE 20 |
11cf8741 JM |
553 | #endif |
554 | long what_they_get; | |
555 | if (config->fixed_p) | |
556 | { | |
557 | if (config->size <= 0) | |
558 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
559 | else | |
560 | what_they_get = config->size; | |
561 | } | |
562 | else | |
563 | { | |
ea9c271d | 564 | what_they_get = get_remote_packet_size (); |
23860348 | 565 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
566 | if (config->size > 0 |
567 | && what_they_get > config->size) | |
568 | what_they_get = config->size; | |
be2a5f71 DJ |
569 | |
570 | /* Limit it to the size of the targets ``g'' response unless we have | |
571 | permission from the stub to use a larger packet size. */ | |
572 | if (rs->explicit_packet_size == 0 | |
573 | && rsa->actual_register_packet_size > 0 | |
574 | && what_they_get > rsa->actual_register_packet_size) | |
575 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 JM |
576 | } |
577 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
578 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
579 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
580 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
6d820c5c DJ |
581 | |
582 | /* Make sure there is room in the global buffer for this packet | |
583 | (including its trailing NUL byte). */ | |
584 | if (rs->buf_size < what_they_get + 1) | |
585 | { | |
586 | rs->buf_size = 2 * what_they_get; | |
587 | rs->buf = xrealloc (rs->buf, 2 * what_they_get); | |
588 | } | |
589 | ||
11cf8741 JM |
590 | return what_they_get; |
591 | } | |
592 | ||
593 | /* Update the size of a read/write packet. If they user wants | |
23860348 | 594 | something really big then do a sanity check. */ |
11cf8741 JM |
595 | |
596 | static void | |
597 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
598 | { | |
599 | int fixed_p = config->fixed_p; | |
600 | long size = config->size; | |
601 | if (args == NULL) | |
8a3fe4f8 | 602 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
603 | else if (strcmp (args, "hard") == 0 |
604 | || strcmp (args, "fixed") == 0) | |
605 | fixed_p = 1; | |
606 | else if (strcmp (args, "soft") == 0 | |
607 | || strcmp (args, "limit") == 0) | |
608 | fixed_p = 0; | |
609 | else | |
610 | { | |
611 | char *end; | |
612 | size = strtoul (args, &end, 0); | |
613 | if (args == end) | |
8a3fe4f8 | 614 | error (_("Invalid %s (bad syntax)."), config->name); |
11cf8741 JM |
615 | #if 0 |
616 | /* Instead of explicitly capping the size of a packet to | |
617 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
618 | instead allowed to set the size to something arbitrarily | |
23860348 | 619 | large. */ |
11cf8741 | 620 | if (size > MAX_REMOTE_PACKET_SIZE) |
8a3fe4f8 | 621 | error (_("Invalid %s (too large)."), config->name); |
11cf8741 JM |
622 | #endif |
623 | } | |
23860348 | 624 | /* Extra checks? */ |
11cf8741 JM |
625 | if (fixed_p && !config->fixed_p) |
626 | { | |
e2e0b3e5 AC |
627 | if (! query (_("The target may not be able to correctly handle a %s\n" |
628 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 629 | config->name, size)) |
8a3fe4f8 | 630 | error (_("Packet size not changed.")); |
11cf8741 | 631 | } |
23860348 | 632 | /* Update the config. */ |
11cf8741 JM |
633 | config->fixed_p = fixed_p; |
634 | config->size = size; | |
635 | } | |
636 | ||
637 | static void | |
638 | show_memory_packet_size (struct memory_packet_config *config) | |
639 | { | |
a3f17187 | 640 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 641 | if (config->fixed_p) |
a3f17187 | 642 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
643 | get_memory_packet_size (config)); |
644 | else | |
a3f17187 | 645 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
646 | get_memory_packet_size (config)); |
647 | } | |
648 | ||
649 | static struct memory_packet_config memory_write_packet_config = | |
650 | { | |
651 | "memory-write-packet-size", | |
652 | }; | |
653 | ||
654 | static void | |
655 | set_memory_write_packet_size (char *args, int from_tty) | |
656 | { | |
657 | set_memory_packet_size (args, &memory_write_packet_config); | |
658 | } | |
659 | ||
660 | static void | |
661 | show_memory_write_packet_size (char *args, int from_tty) | |
662 | { | |
663 | show_memory_packet_size (&memory_write_packet_config); | |
664 | } | |
665 | ||
666 | static long | |
667 | get_memory_write_packet_size (void) | |
668 | { | |
669 | return get_memory_packet_size (&memory_write_packet_config); | |
670 | } | |
671 | ||
672 | static struct memory_packet_config memory_read_packet_config = | |
673 | { | |
674 | "memory-read-packet-size", | |
675 | }; | |
676 | ||
677 | static void | |
678 | set_memory_read_packet_size (char *args, int from_tty) | |
679 | { | |
680 | set_memory_packet_size (args, &memory_read_packet_config); | |
681 | } | |
682 | ||
683 | static void | |
684 | show_memory_read_packet_size (char *args, int from_tty) | |
685 | { | |
686 | show_memory_packet_size (&memory_read_packet_config); | |
687 | } | |
688 | ||
689 | static long | |
690 | get_memory_read_packet_size (void) | |
691 | { | |
692 | long size = get_memory_packet_size (&memory_read_packet_config); | |
693 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an | |
694 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
695 | increased beyond this. */ |
696 | if (size > get_remote_packet_size ()) | |
697 | size = get_remote_packet_size (); | |
11cf8741 JM |
698 | return size; |
699 | } | |
700 | ||
11cf8741 | 701 | \f |
5a2468f5 JM |
702 | /* Generic configuration support for packets the stub optionally |
703 | supports. Allows the user to specify the use of the packet as well | |
23860348 | 704 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
705 | |
706 | enum packet_support | |
707 | { | |
708 | PACKET_SUPPORT_UNKNOWN = 0, | |
709 | PACKET_ENABLE, | |
710 | PACKET_DISABLE | |
711 | }; | |
712 | ||
5a2468f5 JM |
713 | struct packet_config |
714 | { | |
bb572ddd DJ |
715 | const char *name; |
716 | const char *title; | |
7f19b9a2 | 717 | enum auto_boolean detect; |
5a2468f5 JM |
718 | enum packet_support support; |
719 | }; | |
720 | ||
d471ea57 | 721 | /* Analyze a packet's return value and update the packet config |
23860348 | 722 | accordingly. */ |
d471ea57 AC |
723 | |
724 | enum packet_result | |
725 | { | |
726 | PACKET_ERROR, | |
727 | PACKET_OK, | |
728 | PACKET_UNKNOWN | |
729 | }; | |
730 | ||
5a2468f5 | 731 | static void |
d471ea57 | 732 | update_packet_config (struct packet_config *config) |
5a2468f5 | 733 | { |
d471ea57 AC |
734 | switch (config->detect) |
735 | { | |
7f19b9a2 | 736 | case AUTO_BOOLEAN_TRUE: |
d471ea57 AC |
737 | config->support = PACKET_ENABLE; |
738 | break; | |
7f19b9a2 | 739 | case AUTO_BOOLEAN_FALSE: |
d471ea57 AC |
740 | config->support = PACKET_DISABLE; |
741 | break; | |
7f19b9a2 | 742 | case AUTO_BOOLEAN_AUTO: |
d471ea57 AC |
743 | config->support = PACKET_SUPPORT_UNKNOWN; |
744 | break; | |
745 | } | |
5a2468f5 JM |
746 | } |
747 | ||
748 | static void | |
fba45db2 | 749 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
750 | { |
751 | char *support = "internal-error"; | |
752 | switch (config->support) | |
753 | { | |
754 | case PACKET_ENABLE: | |
755 | support = "enabled"; | |
756 | break; | |
757 | case PACKET_DISABLE: | |
758 | support = "disabled"; | |
759 | break; | |
760 | case PACKET_SUPPORT_UNKNOWN: | |
761 | support = "unknown"; | |
762 | break; | |
763 | } | |
764 | switch (config->detect) | |
765 | { | |
7f19b9a2 | 766 | case AUTO_BOOLEAN_AUTO: |
37a105a1 DJ |
767 | printf_filtered (_("Support for the `%s' packet is auto-detected, currently %s.\n"), |
768 | config->name, support); | |
5a2468f5 | 769 | break; |
7f19b9a2 AC |
770 | case AUTO_BOOLEAN_TRUE: |
771 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
772 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
773 | config->name, support); | |
8e248173 | 774 | break; |
5a2468f5 JM |
775 | } |
776 | } | |
777 | ||
778 | static void | |
bb572ddd DJ |
779 | add_packet_config_cmd (struct packet_config *config, const char *name, |
780 | const char *title, int legacy) | |
d471ea57 | 781 | { |
5a2468f5 JM |
782 | char *set_doc; |
783 | char *show_doc; | |
d471ea57 | 784 | char *cmd_name; |
3ed07be4 | 785 | |
5a2468f5 JM |
786 | config->name = name; |
787 | config->title = title; | |
7f19b9a2 | 788 | config->detect = AUTO_BOOLEAN_AUTO; |
8e248173 | 789 | config->support = PACKET_SUPPORT_UNKNOWN; |
b435e160 AC |
790 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
791 | name, title); | |
792 | show_doc = xstrprintf ("Show current use of remote protocol `%s' (%s) packet", | |
793 | name, title); | |
d471ea57 | 794 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 795 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 796 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
2c5b56ce | 797 | &config->detect, set_doc, show_doc, NULL, /* help_doc */ |
bb572ddd DJ |
798 | set_remote_protocol_packet_cmd, |
799 | show_remote_protocol_packet_cmd, | |
800 | &remote_set_cmdlist, &remote_show_cmdlist); | |
23860348 | 801 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
802 | if (legacy) |
803 | { | |
804 | char *legacy_name; | |
b435e160 | 805 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 806 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 807 | &remote_set_cmdlist); |
d471ea57 | 808 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 809 | &remote_show_cmdlist); |
d471ea57 | 810 | } |
5a2468f5 JM |
811 | } |
812 | ||
d471ea57 | 813 | static enum packet_result |
a76d924d | 814 | packet_check_result (const char *buf) |
5a2468f5 | 815 | { |
d471ea57 | 816 | if (buf[0] != '\0') |
5a2468f5 | 817 | { |
d471ea57 | 818 | /* The stub recognized the packet request. Check that the |
23860348 | 819 | operation succeeded. */ |
a76d924d DJ |
820 | if (buf[0] == 'E' |
821 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
822 | && buf[3] == '\0') | |
823 | /* "Enn" - definitly an error. */ | |
824 | return PACKET_ERROR; | |
825 | ||
826 | /* Always treat "E." as an error. This will be used for | |
827 | more verbose error messages, such as E.memtypes. */ | |
828 | if (buf[0] == 'E' && buf[1] == '.') | |
829 | return PACKET_ERROR; | |
830 | ||
831 | /* The packet may or may not be OK. Just assume it is. */ | |
832 | return PACKET_OK; | |
833 | } | |
834 | else | |
835 | /* The stub does not support the packet. */ | |
836 | return PACKET_UNKNOWN; | |
837 | } | |
838 | ||
839 | static enum packet_result | |
840 | packet_ok (const char *buf, struct packet_config *config) | |
841 | { | |
842 | enum packet_result result; | |
843 | ||
844 | result = packet_check_result (buf); | |
845 | switch (result) | |
846 | { | |
847 | case PACKET_OK: | |
848 | case PACKET_ERROR: | |
849 | /* The stub recognized the packet request. */ | |
d471ea57 AC |
850 | switch (config->support) |
851 | { | |
852 | case PACKET_SUPPORT_UNKNOWN: | |
853 | if (remote_debug) | |
854 | fprintf_unfiltered (gdb_stdlog, | |
855 | "Packet %s (%s) is supported\n", | |
856 | config->name, config->title); | |
857 | config->support = PACKET_ENABLE; | |
858 | break; | |
859 | case PACKET_DISABLE: | |
8e65ff28 | 860 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 861 | _("packet_ok: attempt to use a disabled packet")); |
d471ea57 AC |
862 | break; |
863 | case PACKET_ENABLE: | |
864 | break; | |
865 | } | |
a76d924d DJ |
866 | break; |
867 | case PACKET_UNKNOWN: | |
23860348 | 868 | /* The stub does not support the packet. */ |
d471ea57 AC |
869 | switch (config->support) |
870 | { | |
871 | case PACKET_ENABLE: | |
7f19b9a2 | 872 | if (config->detect == AUTO_BOOLEAN_AUTO) |
d471ea57 | 873 | /* If the stub previously indicated that the packet was |
23860348 | 874 | supported then there is a protocol error.. */ |
8a3fe4f8 | 875 | error (_("Protocol error: %s (%s) conflicting enabled responses."), |
d471ea57 AC |
876 | config->name, config->title); |
877 | else | |
23860348 | 878 | /* The user set it wrong. */ |
8a3fe4f8 | 879 | error (_("Enabled packet %s (%s) not recognized by stub"), |
d471ea57 AC |
880 | config->name, config->title); |
881 | break; | |
882 | case PACKET_SUPPORT_UNKNOWN: | |
883 | if (remote_debug) | |
884 | fprintf_unfiltered (gdb_stdlog, | |
885 | "Packet %s (%s) is NOT supported\n", | |
886 | config->name, config->title); | |
887 | config->support = PACKET_DISABLE; | |
888 | break; | |
889 | case PACKET_DISABLE: | |
890 | break; | |
891 | } | |
a76d924d | 892 | break; |
5a2468f5 | 893 | } |
a76d924d DJ |
894 | |
895 | return result; | |
5a2468f5 JM |
896 | } |
897 | ||
444abaca DJ |
898 | enum { |
899 | PACKET_vCont = 0, | |
900 | PACKET_X, | |
901 | PACKET_qSymbol, | |
902 | PACKET_P, | |
903 | PACKET_p, | |
904 | PACKET_Z0, | |
905 | PACKET_Z1, | |
906 | PACKET_Z2, | |
907 | PACKET_Z3, | |
908 | PACKET_Z4, | |
a6b151f1 DJ |
909 | PACKET_vFile_open, |
910 | PACKET_vFile_pread, | |
911 | PACKET_vFile_pwrite, | |
912 | PACKET_vFile_close, | |
913 | PACKET_vFile_unlink, | |
0876f84a | 914 | PACKET_qXfer_auxv, |
23181151 | 915 | PACKET_qXfer_features, |
cfa9d6d9 | 916 | PACKET_qXfer_libraries, |
fd79ecee | 917 | PACKET_qXfer_memory_map, |
0e7f50da UW |
918 | PACKET_qXfer_spu_read, |
919 | PACKET_qXfer_spu_write, | |
444abaca | 920 | PACKET_qGetTLSAddr, |
be2a5f71 | 921 | PACKET_qSupported, |
89be2091 | 922 | PACKET_QPassSignals, |
444abaca DJ |
923 | PACKET_MAX |
924 | }; | |
506fb367 | 925 | |
444abaca | 926 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 MS |
927 | |
928 | static void | |
444abaca DJ |
929 | set_remote_protocol_packet_cmd (char *args, int from_tty, |
930 | struct cmd_list_element *c) | |
dc8acb97 | 931 | { |
444abaca | 932 | struct packet_config *packet; |
dc8acb97 | 933 | |
444abaca DJ |
934 | for (packet = remote_protocol_packets; |
935 | packet < &remote_protocol_packets[PACKET_MAX]; | |
936 | packet++) | |
937 | { | |
938 | if (&packet->detect == c->var) | |
939 | { | |
940 | update_packet_config (packet); | |
941 | return; | |
942 | } | |
943 | } | |
944 | internal_error (__FILE__, __LINE__, "Could not find config for %s", | |
945 | c->name); | |
dc8acb97 MS |
946 | } |
947 | ||
5a2468f5 | 948 | static void |
444abaca DJ |
949 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
950 | struct cmd_list_element *c, | |
951 | const char *value) | |
5a2468f5 | 952 | { |
444abaca | 953 | struct packet_config *packet; |
5a2468f5 | 954 | |
444abaca DJ |
955 | for (packet = remote_protocol_packets; |
956 | packet < &remote_protocol_packets[PACKET_MAX]; | |
957 | packet++) | |
958 | { | |
959 | if (&packet->detect == c->var) | |
960 | { | |
961 | show_packet_config_cmd (packet); | |
962 | return; | |
963 | } | |
964 | } | |
965 | internal_error (__FILE__, __LINE__, "Could not find config for %s", | |
966 | c->name); | |
5a2468f5 JM |
967 | } |
968 | ||
d471ea57 AC |
969 | /* Should we try one of the 'Z' requests? */ |
970 | ||
971 | enum Z_packet_type | |
972 | { | |
973 | Z_PACKET_SOFTWARE_BP, | |
974 | Z_PACKET_HARDWARE_BP, | |
975 | Z_PACKET_WRITE_WP, | |
976 | Z_PACKET_READ_WP, | |
977 | Z_PACKET_ACCESS_WP, | |
978 | NR_Z_PACKET_TYPES | |
979 | }; | |
96baa820 | 980 | |
d471ea57 | 981 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 982 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 983 | |
7f19b9a2 | 984 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
985 | |
986 | static void | |
fba45db2 KB |
987 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
988 | struct cmd_list_element *c) | |
96baa820 | 989 | { |
d471ea57 AC |
990 | int i; |
991 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
992 | { | |
444abaca DJ |
993 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
994 | update_packet_config (&remote_protocol_packets[PACKET_Z0 + i]); | |
d471ea57 | 995 | } |
96baa820 JM |
996 | } |
997 | ||
998 | static void | |
08546159 AC |
999 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
1000 | struct cmd_list_element *c, | |
1001 | const char *value) | |
96baa820 | 1002 | { |
d471ea57 AC |
1003 | int i; |
1004 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
1005 | { | |
444abaca | 1006 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 1007 | } |
96baa820 JM |
1008 | } |
1009 | ||
9d1f7ab2 MS |
1010 | /* Should we try the 'ThreadInfo' query packet? |
1011 | ||
1012 | This variable (NOT available to the user: auto-detect only!) | |
1013 | determines whether GDB will use the new, simpler "ThreadInfo" | |
1014 | query or the older, more complex syntax for thread queries. | |
802188a7 | 1015 | This is an auto-detect variable (set to true at each connect, |
9d1f7ab2 MS |
1016 | and set to false when the target fails to recognize it). */ |
1017 | ||
1018 | static int use_threadinfo_query; | |
1019 | static int use_threadextra_query; | |
1020 | ||
23860348 | 1021 | /* Tokens for use by the asynchronous signal handlers for SIGINT. */ |
d5d6fca5 DJ |
1022 | static struct async_signal_handler *sigint_remote_twice_token; |
1023 | static struct async_signal_handler *sigint_remote_token; | |
43ff13b4 | 1024 | |
c906108c SS |
1025 | /* These are pointers to hook functions that may be set in order to |
1026 | modify resume/wait behavior for a particular architecture. */ | |
1027 | ||
9a4105ab AC |
1028 | void (*deprecated_target_resume_hook) (void); |
1029 | void (*deprecated_target_wait_loop_hook) (void); | |
c906108c SS |
1030 | \f |
1031 | ||
c5aa993b | 1032 | |
c906108c SS |
1033 | /* These are the threads which we last sent to the remote system. |
1034 | -1 for all or -2 for not sent yet. */ | |
1035 | static int general_thread; | |
cce74817 | 1036 | static int continue_thread; |
c906108c SS |
1037 | |
1038 | /* Call this function as a result of | |
1039 | 1) A halt indication (T packet) containing a thread id | |
1040 | 2) A direct query of currthread | |
1041 | 3) Successful execution of set thread | |
1042 | */ | |
1043 | ||
1044 | static void | |
fba45db2 | 1045 | record_currthread (int currthread) |
c906108c | 1046 | { |
c906108c | 1047 | general_thread = currthread; |
cce74817 | 1048 | |
c906108c SS |
1049 | /* If this is a new thread, add it to GDB's thread list. |
1050 | If we leave it up to WFI to do this, bad things will happen. */ | |
39f77062 | 1051 | if (!in_thread_list (pid_to_ptid (currthread))) |
0f71a2f6 | 1052 | { |
39f77062 | 1053 | add_thread (pid_to_ptid (currthread)); |
8b93c638 | 1054 | ui_out_text (uiout, "[New "); |
39f77062 | 1055 | ui_out_text (uiout, target_pid_to_str (pid_to_ptid (currthread))); |
8b93c638 | 1056 | ui_out_text (uiout, "]\n"); |
0f71a2f6 | 1057 | } |
c906108c SS |
1058 | } |
1059 | ||
89be2091 DJ |
1060 | static char *last_pass_packet; |
1061 | ||
1062 | /* If 'QPassSignals' is supported, tell the remote stub what signals | |
1063 | it can simply pass through to the inferior without reporting. */ | |
1064 | ||
1065 | static void | |
1066 | remote_pass_signals (void) | |
1067 | { | |
1068 | if (remote_protocol_packets[PACKET_QPassSignals].support != PACKET_DISABLE) | |
1069 | { | |
1070 | char *pass_packet, *p; | |
1071 | int numsigs = (int) TARGET_SIGNAL_LAST; | |
1072 | int count = 0, i; | |
1073 | ||
1074 | gdb_assert (numsigs < 256); | |
1075 | for (i = 0; i < numsigs; i++) | |
1076 | { | |
1077 | if (signal_stop_state (i) == 0 | |
1078 | && signal_print_state (i) == 0 | |
1079 | && signal_pass_state (i) == 1) | |
1080 | count++; | |
1081 | } | |
1082 | pass_packet = xmalloc (count * 3 + strlen ("QPassSignals:") + 1); | |
1083 | strcpy (pass_packet, "QPassSignals:"); | |
1084 | p = pass_packet + strlen (pass_packet); | |
1085 | for (i = 0; i < numsigs; i++) | |
1086 | { | |
1087 | if (signal_stop_state (i) == 0 | |
1088 | && signal_print_state (i) == 0 | |
1089 | && signal_pass_state (i) == 1) | |
1090 | { | |
1091 | if (i >= 16) | |
1092 | *p++ = tohex (i >> 4); | |
1093 | *p++ = tohex (i & 15); | |
1094 | if (count) | |
1095 | *p++ = ';'; | |
1096 | else | |
1097 | break; | |
1098 | count--; | |
1099 | } | |
1100 | } | |
1101 | *p = 0; | |
1102 | if (!last_pass_packet || strcmp (last_pass_packet, pass_packet)) | |
1103 | { | |
1104 | struct remote_state *rs = get_remote_state (); | |
1105 | char *buf = rs->buf; | |
1106 | ||
1107 | putpkt (pass_packet); | |
1108 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1109 | packet_ok (buf, &remote_protocol_packets[PACKET_QPassSignals]); | |
1110 | if (last_pass_packet) | |
1111 | xfree (last_pass_packet); | |
1112 | last_pass_packet = pass_packet; | |
1113 | } | |
1114 | else | |
1115 | xfree (pass_packet); | |
1116 | } | |
1117 | } | |
1118 | ||
c906108c SS |
1119 | #define MAGIC_NULL_PID 42000 |
1120 | ||
1121 | static void | |
fba45db2 | 1122 | set_thread (int th, int gen) |
c906108c | 1123 | { |
d01949b6 | 1124 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 1125 | char *buf = rs->buf; |
cce74817 | 1126 | int state = gen ? general_thread : continue_thread; |
c906108c SS |
1127 | |
1128 | if (state == th) | |
1129 | return; | |
1130 | ||
1131 | buf[0] = 'H'; | |
1132 | buf[1] = gen ? 'g' : 'c'; | |
1133 | if (th == MAGIC_NULL_PID) | |
1134 | { | |
1135 | buf[2] = '0'; | |
1136 | buf[3] = '\0'; | |
1137 | } | |
1138 | else if (th < 0) | |
ea9c271d | 1139 | xsnprintf (&buf[2], get_remote_packet_size () - 2, "-%x", -th); |
c906108c | 1140 | else |
ea9c271d | 1141 | xsnprintf (&buf[2], get_remote_packet_size () - 2, "%x", th); |
c906108c | 1142 | putpkt (buf); |
6d820c5c | 1143 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 1144 | if (gen) |
c5aa993b | 1145 | general_thread = th; |
c906108c | 1146 | else |
cce74817 | 1147 | continue_thread = th; |
c906108c SS |
1148 | } |
1149 | \f | |
1150 | /* Return nonzero if the thread TH is still alive on the remote system. */ | |
1151 | ||
1152 | static int | |
39f77062 | 1153 | remote_thread_alive (ptid_t ptid) |
c906108c | 1154 | { |
6d820c5c | 1155 | struct remote_state *rs = get_remote_state (); |
39f77062 | 1156 | int tid = PIDGET (ptid); |
c906108c | 1157 | |
cce74817 | 1158 | if (tid < 0) |
2e9f7625 | 1159 | xsnprintf (rs->buf, get_remote_packet_size (), "T-%08x", -tid); |
c906108c | 1160 | else |
2e9f7625 DJ |
1161 | xsnprintf (rs->buf, get_remote_packet_size (), "T%08x", tid); |
1162 | putpkt (rs->buf); | |
6d820c5c | 1163 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1164 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
1165 | } |
1166 | ||
1167 | /* About these extended threadlist and threadinfo packets. They are | |
1168 | variable length packets but, the fields within them are often fixed | |
1169 | length. They are redundent enough to send over UDP as is the | |
1170 | remote protocol in general. There is a matching unit test module | |
1171 | in libstub. */ | |
1172 | ||
cce74817 JM |
1173 | #define OPAQUETHREADBYTES 8 |
1174 | ||
1175 | /* a 64 bit opaque identifier */ | |
1176 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
1177 | ||
23860348 MS |
1178 | /* WARNING: This threadref data structure comes from the remote O.S., |
1179 | libstub protocol encoding, and remote.c. it is not particularly | |
1180 | changable. */ | |
cce74817 JM |
1181 | |
1182 | /* Right now, the internal structure is int. We want it to be bigger. | |
1183 | Plan to fix this. | |
c5aa993b | 1184 | */ |
cce74817 | 1185 | |
23860348 | 1186 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 1187 | |
9d1f7ab2 | 1188 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 1189 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
1190 | |
1191 | struct gdb_ext_thread_info | |
c5aa993b | 1192 | { |
23860348 | 1193 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 1194 | int active; /* Has state interesting to GDB? |
23860348 | 1195 | regs, stack. */ |
2bc416ba | 1196 | char display[256]; /* Brief state display, name, |
cedea757 | 1197 | blocked/suspended. */ |
23860348 | 1198 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 1199 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 1200 | whatever. */ |
c5aa993b | 1201 | }; |
cce74817 JM |
1202 | |
1203 | /* The volume of remote transfers can be limited by submitting | |
1204 | a mask containing bits specifying the desired information. | |
1205 | Use a union of these values as the 'selection' parameter to | |
1206 | get_thread_info. FIXME: Make these TAG names more thread specific. | |
c5aa993b | 1207 | */ |
cce74817 JM |
1208 | |
1209 | #define TAG_THREADID 1 | |
1210 | #define TAG_EXISTS 2 | |
1211 | #define TAG_DISPLAY 4 | |
1212 | #define TAG_THREADNAME 8 | |
c5aa993b | 1213 | #define TAG_MOREDISPLAY 16 |
cce74817 | 1214 | |
23860348 | 1215 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 1216 | |
b2dd6311 | 1217 | char *unpack_varlen_hex (char *buff, ULONGEST *result); |
cce74817 | 1218 | |
a14ed312 | 1219 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 1220 | |
a14ed312 | 1221 | static char *pack_nibble (char *buf, int nibble); |
cce74817 | 1222 | |
23860348 | 1223 | static char *pack_hex_byte (char *pkt, int /* unsigned char */ byte); |
cce74817 | 1224 | |
a14ed312 | 1225 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 1226 | |
a14ed312 | 1227 | static char *pack_int (char *buf, int value); |
cce74817 | 1228 | |
a14ed312 | 1229 | static char *unpack_int (char *buf, int *value); |
cce74817 | 1230 | |
a14ed312 | 1231 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 1232 | |
23860348 | 1233 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 1234 | |
23860348 | 1235 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 1236 | |
23860348 | 1237 | void int_to_threadref (threadref *id, int value); |
cce74817 | 1238 | |
23860348 | 1239 | static int threadref_to_int (threadref *ref); |
cce74817 | 1240 | |
23860348 | 1241 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 1242 | |
23860348 | 1243 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 1244 | |
2bc416ba | 1245 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 1246 | threadref *id); |
cce74817 | 1247 | |
a14ed312 | 1248 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 1249 | threadref *expectedref, |
a14ed312 KB |
1250 | struct gdb_ext_thread_info |
1251 | *info); | |
cce74817 JM |
1252 | |
1253 | ||
2bc416ba | 1254 | static int remote_get_threadinfo (threadref *threadid, |
23860348 | 1255 | int fieldset, /*TAG mask */ |
a14ed312 | 1256 | struct gdb_ext_thread_info *info); |
cce74817 | 1257 | |
a14ed312 KB |
1258 | static char *pack_threadlist_request (char *pkt, int startflag, |
1259 | int threadcount, | |
23860348 | 1260 | threadref *nextthread); |
cce74817 | 1261 | |
a14ed312 KB |
1262 | static int parse_threadlist_response (char *pkt, |
1263 | int result_limit, | |
23860348 | 1264 | threadref *original_echo, |
2bc416ba | 1265 | threadref *resultlist, |
23860348 | 1266 | int *doneflag); |
cce74817 | 1267 | |
a14ed312 | 1268 | static int remote_get_threadlist (int startflag, |
23860348 | 1269 | threadref *nextthread, |
a14ed312 KB |
1270 | int result_limit, |
1271 | int *done, | |
2bc416ba | 1272 | int *result_count, |
23860348 | 1273 | threadref *threadlist); |
cce74817 | 1274 | |
23860348 | 1275 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 1276 | |
a14ed312 KB |
1277 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
1278 | void *context, int looplimit); | |
cce74817 | 1279 | |
23860348 | 1280 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 1281 | |
23860348 | 1282 | /* Encode 64 bits in 16 chars of hex. */ |
c906108c SS |
1283 | |
1284 | static const char hexchars[] = "0123456789abcdef"; | |
1285 | ||
1286 | static int | |
fba45db2 | 1287 | ishex (int ch, int *val) |
c906108c SS |
1288 | { |
1289 | if ((ch >= 'a') && (ch <= 'f')) | |
1290 | { | |
1291 | *val = ch - 'a' + 10; | |
1292 | return 1; | |
1293 | } | |
1294 | if ((ch >= 'A') && (ch <= 'F')) | |
1295 | { | |
1296 | *val = ch - 'A' + 10; | |
1297 | return 1; | |
1298 | } | |
1299 | if ((ch >= '0') && (ch <= '9')) | |
1300 | { | |
1301 | *val = ch - '0'; | |
1302 | return 1; | |
1303 | } | |
1304 | return 0; | |
1305 | } | |
1306 | ||
1307 | static int | |
fba45db2 | 1308 | stubhex (int ch) |
c906108c SS |
1309 | { |
1310 | if (ch >= 'a' && ch <= 'f') | |
1311 | return ch - 'a' + 10; | |
1312 | if (ch >= '0' && ch <= '9') | |
1313 | return ch - '0'; | |
1314 | if (ch >= 'A' && ch <= 'F') | |
1315 | return ch - 'A' + 10; | |
1316 | return -1; | |
1317 | } | |
1318 | ||
1319 | static int | |
fba45db2 | 1320 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
1321 | { |
1322 | int nibble; | |
1323 | int retval = 0; | |
1324 | ||
1325 | while (fieldlength) | |
1326 | { | |
1327 | nibble = stubhex (*buff++); | |
1328 | retval |= nibble; | |
1329 | fieldlength--; | |
1330 | if (fieldlength) | |
1331 | retval = retval << 4; | |
1332 | } | |
1333 | return retval; | |
1334 | } | |
1335 | ||
1336 | char * | |
fba45db2 | 1337 | unpack_varlen_hex (char *buff, /* packet to parse */ |
b2dd6311 | 1338 | ULONGEST *result) |
c906108c SS |
1339 | { |
1340 | int nibble; | |
d49c44d5 | 1341 | ULONGEST retval = 0; |
c906108c SS |
1342 | |
1343 | while (ishex (*buff, &nibble)) | |
1344 | { | |
1345 | buff++; | |
1346 | retval = retval << 4; | |
1347 | retval |= nibble & 0x0f; | |
1348 | } | |
1349 | *result = retval; | |
1350 | return buff; | |
1351 | } | |
1352 | ||
1353 | static char * | |
fba45db2 | 1354 | unpack_nibble (char *buf, int *val) |
c906108c | 1355 | { |
b7589f7d | 1356 | *val = fromhex (*buf++); |
c906108c SS |
1357 | return buf; |
1358 | } | |
1359 | ||
1360 | static char * | |
fba45db2 | 1361 | pack_nibble (char *buf, int nibble) |
c906108c SS |
1362 | { |
1363 | *buf++ = hexchars[(nibble & 0x0f)]; | |
1364 | return buf; | |
1365 | } | |
1366 | ||
1367 | static char * | |
fba45db2 | 1368 | pack_hex_byte (char *pkt, int byte) |
c906108c SS |
1369 | { |
1370 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
1371 | *pkt++ = hexchars[(byte & 0xf)]; | |
1372 | return pkt; | |
1373 | } | |
1374 | ||
1375 | static char * | |
fba45db2 | 1376 | unpack_byte (char *buf, int *value) |
c906108c SS |
1377 | { |
1378 | *value = stub_unpack_int (buf, 2); | |
1379 | return buf + 2; | |
1380 | } | |
1381 | ||
1382 | static char * | |
fba45db2 | 1383 | pack_int (char *buf, int value) |
c906108c SS |
1384 | { |
1385 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
1386 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
1387 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
1388 | buf = pack_hex_byte (buf, (value & 0xff)); | |
1389 | return buf; | |
1390 | } | |
1391 | ||
1392 | static char * | |
fba45db2 | 1393 | unpack_int (char *buf, int *value) |
c906108c SS |
1394 | { |
1395 | *value = stub_unpack_int (buf, 8); | |
1396 | return buf + 8; | |
1397 | } | |
1398 | ||
23860348 | 1399 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 1400 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
1401 | |
1402 | static char * | |
fba45db2 | 1403 | pack_string (char *pkt, char *string) |
c906108c SS |
1404 | { |
1405 | char ch; | |
1406 | int len; | |
1407 | ||
1408 | len = strlen (string); | |
1409 | if (len > 200) | |
23860348 | 1410 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
1411 | pkt = pack_hex_byte (pkt, len); |
1412 | while (len-- > 0) | |
1413 | { | |
1414 | ch = *string++; | |
1415 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 1416 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
1417 | *pkt++ = ch; |
1418 | } | |
1419 | return pkt; | |
1420 | } | |
1421 | #endif /* 0 (unused) */ | |
1422 | ||
1423 | static char * | |
fba45db2 | 1424 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
1425 | { |
1426 | while (length--) | |
1427 | *dest++ = *src++; | |
1428 | *dest = '\0'; | |
1429 | return src; | |
1430 | } | |
1431 | ||
1432 | static char * | |
fba45db2 | 1433 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
1434 | { |
1435 | char *limit; | |
1436 | unsigned char *altid; | |
1437 | ||
1438 | altid = (unsigned char *) id; | |
1439 | limit = pkt + BUF_THREAD_ID_SIZE; | |
1440 | while (pkt < limit) | |
1441 | pkt = pack_hex_byte (pkt, *altid++); | |
1442 | return pkt; | |
1443 | } | |
1444 | ||
1445 | ||
1446 | static char * | |
fba45db2 | 1447 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
1448 | { |
1449 | char *altref; | |
1450 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
1451 | int x, y; | |
1452 | ||
1453 | altref = (char *) id; | |
1454 | ||
1455 | while (inbuf < limit) | |
1456 | { | |
1457 | x = stubhex (*inbuf++); | |
1458 | y = stubhex (*inbuf++); | |
1459 | *altref++ = (x << 4) | y; | |
1460 | } | |
1461 | return inbuf; | |
1462 | } | |
1463 | ||
1464 | /* Externally, threadrefs are 64 bits but internally, they are still | |
1465 | ints. This is due to a mismatch of specifications. We would like | |
1466 | to use 64bit thread references internally. This is an adapter | |
1467 | function. */ | |
1468 | ||
1469 | void | |
fba45db2 | 1470 | int_to_threadref (threadref *id, int value) |
c906108c SS |
1471 | { |
1472 | unsigned char *scan; | |
1473 | ||
1474 | scan = (unsigned char *) id; | |
1475 | { | |
1476 | int i = 4; | |
1477 | while (i--) | |
1478 | *scan++ = 0; | |
1479 | } | |
1480 | *scan++ = (value >> 24) & 0xff; | |
1481 | *scan++ = (value >> 16) & 0xff; | |
1482 | *scan++ = (value >> 8) & 0xff; | |
1483 | *scan++ = (value & 0xff); | |
1484 | } | |
1485 | ||
1486 | static int | |
fba45db2 | 1487 | threadref_to_int (threadref *ref) |
c906108c SS |
1488 | { |
1489 | int i, value = 0; | |
1490 | unsigned char *scan; | |
1491 | ||
cfd77fa1 | 1492 | scan = *ref; |
c906108c SS |
1493 | scan += 4; |
1494 | i = 4; | |
1495 | while (i-- > 0) | |
1496 | value = (value << 8) | ((*scan++) & 0xff); | |
1497 | return value; | |
1498 | } | |
1499 | ||
1500 | static void | |
fba45db2 | 1501 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
1502 | { |
1503 | int i; | |
1504 | unsigned char *csrc, *cdest; | |
1505 | ||
1506 | csrc = (unsigned char *) src; | |
1507 | cdest = (unsigned char *) dest; | |
1508 | i = 8; | |
1509 | while (i--) | |
1510 | *cdest++ = *csrc++; | |
1511 | } | |
1512 | ||
1513 | static int | |
fba45db2 | 1514 | threadmatch (threadref *dest, threadref *src) |
c906108c | 1515 | { |
23860348 | 1516 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
1517 | #if 0 |
1518 | unsigned char *srcp, *destp; | |
1519 | int i, result; | |
1520 | srcp = (char *) src; | |
1521 | destp = (char *) dest; | |
1522 | ||
1523 | result = 1; | |
1524 | while (i-- > 0) | |
1525 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
1526 | return result; | |
1527 | #endif | |
1528 | return 1; | |
1529 | } | |
1530 | ||
1531 | /* | |
c5aa993b JM |
1532 | threadid:1, # always request threadid |
1533 | context_exists:2, | |
1534 | display:4, | |
1535 | unique_name:8, | |
1536 | more_display:16 | |
1537 | */ | |
c906108c SS |
1538 | |
1539 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
1540 | ||
1541 | static char * | |
fba45db2 | 1542 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 1543 | { |
23860348 MS |
1544 | *pkt++ = 'q'; /* Info Query */ |
1545 | *pkt++ = 'P'; /* process or thread info */ | |
1546 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 1547 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 1548 | *pkt = '\0'; /* terminate */ |
c906108c SS |
1549 | return pkt; |
1550 | } | |
1551 | ||
23860348 | 1552 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 1553 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 1554 | add more fields as time goes by. */ |
c906108c | 1555 | |
23860348 | 1556 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 1557 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 1558 | fetch registers and its stack? */ |
c5aa993b | 1559 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 1560 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 1561 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 1562 | the process. */ |
c906108c SS |
1563 | |
1564 | static int | |
fba45db2 KB |
1565 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
1566 | struct gdb_ext_thread_info *info) | |
c906108c | 1567 | { |
d01949b6 | 1568 | struct remote_state *rs = get_remote_state (); |
c906108c | 1569 | int mask, length; |
cfd77fa1 | 1570 | int tag; |
c906108c | 1571 | threadref ref; |
6d820c5c | 1572 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
1573 | int retval = 1; |
1574 | ||
23860348 | 1575 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
1576 | info->active = 0; |
1577 | info->display[0] = '\0'; | |
1578 | info->shortname[0] = '\0'; | |
1579 | info->more_display[0] = '\0'; | |
1580 | ||
23860348 MS |
1581 | /* Assume the characters indicating the packet type have been |
1582 | stripped. */ | |
c906108c SS |
1583 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
1584 | pkt = unpack_threadid (pkt, &ref); | |
1585 | ||
1586 | if (mask == 0) | |
8a3fe4f8 | 1587 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 1588 | if (!threadmatch (&ref, expectedref)) |
23860348 | 1589 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 1590 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
1591 | return 0; |
1592 | } | |
1593 | copy_threadref (&info->threadid, &ref); | |
1594 | ||
23860348 | 1595 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 1596 | |
23860348 MS |
1597 | /* Packets are terminated with nulls. */ |
1598 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
1599 | { |
1600 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
1601 | pkt = unpack_byte (pkt, &length); /* length */ |
1602 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 1603 | { |
8a3fe4f8 | 1604 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
1605 | retval = 0; |
1606 | break; | |
1607 | } | |
1608 | if (tag == TAG_THREADID) | |
1609 | { | |
1610 | if (length != 16) | |
1611 | { | |
8a3fe4f8 | 1612 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
1613 | retval = 0; |
1614 | break; | |
1615 | } | |
1616 | pkt = unpack_threadid (pkt, &ref); | |
1617 | mask = mask & ~TAG_THREADID; | |
1618 | continue; | |
1619 | } | |
1620 | if (tag == TAG_EXISTS) | |
1621 | { | |
1622 | info->active = stub_unpack_int (pkt, length); | |
1623 | pkt += length; | |
1624 | mask = mask & ~(TAG_EXISTS); | |
1625 | if (length > 8) | |
1626 | { | |
8a3fe4f8 | 1627 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
1628 | retval = 0; |
1629 | break; | |
1630 | } | |
1631 | continue; | |
1632 | } | |
1633 | if (tag == TAG_THREADNAME) | |
1634 | { | |
1635 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
1636 | mask = mask & ~TAG_THREADNAME; | |
1637 | continue; | |
1638 | } | |
1639 | if (tag == TAG_DISPLAY) | |
1640 | { | |
1641 | pkt = unpack_string (pkt, &info->display[0], length); | |
1642 | mask = mask & ~TAG_DISPLAY; | |
1643 | continue; | |
1644 | } | |
1645 | if (tag == TAG_MOREDISPLAY) | |
1646 | { | |
1647 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
1648 | mask = mask & ~TAG_MOREDISPLAY; | |
1649 | continue; | |
1650 | } | |
8a3fe4f8 | 1651 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 1652 | break; /* Not a tag we know about. */ |
c906108c SS |
1653 | } |
1654 | return retval; | |
1655 | } | |
1656 | ||
1657 | static int | |
fba45db2 KB |
1658 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
1659 | struct gdb_ext_thread_info *info) | |
c906108c | 1660 | { |
d01949b6 | 1661 | struct remote_state *rs = get_remote_state (); |
c906108c | 1662 | int result; |
c906108c | 1663 | |
2e9f7625 DJ |
1664 | pack_threadinfo_request (rs->buf, fieldset, threadid); |
1665 | putpkt (rs->buf); | |
6d820c5c | 1666 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1667 | result = remote_unpack_thread_info_response (rs->buf + 2, |
23860348 | 1668 | threadid, info); |
c906108c SS |
1669 | return result; |
1670 | } | |
1671 | ||
c906108c SS |
1672 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
1673 | ||
1674 | static char * | |
fba45db2 KB |
1675 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
1676 | threadref *nextthread) | |
c906108c SS |
1677 | { |
1678 | *pkt++ = 'q'; /* info query packet */ | |
1679 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 1680 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
1681 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
1682 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
1683 | *pkt = '\0'; | |
1684 | return pkt; | |
1685 | } | |
1686 | ||
1687 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
1688 | ||
1689 | static int | |
fba45db2 KB |
1690 | parse_threadlist_response (char *pkt, int result_limit, |
1691 | threadref *original_echo, threadref *resultlist, | |
1692 | int *doneflag) | |
c906108c | 1693 | { |
d01949b6 | 1694 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1695 | char *limit; |
1696 | int count, resultcount, done; | |
1697 | ||
1698 | resultcount = 0; | |
1699 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 1700 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 1701 | /* done parse past here */ |
c906108c SS |
1702 | pkt = unpack_byte (pkt, &count); /* count field */ |
1703 | pkt = unpack_nibble (pkt, &done); | |
1704 | /* The first threadid is the argument threadid. */ | |
1705 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
1706 | while ((count-- > 0) && (pkt < limit)) | |
1707 | { | |
1708 | pkt = unpack_threadid (pkt, resultlist++); | |
1709 | if (resultcount++ >= result_limit) | |
1710 | break; | |
1711 | } | |
1712 | if (doneflag) | |
1713 | *doneflag = done; | |
1714 | return resultcount; | |
1715 | } | |
1716 | ||
1717 | static int | |
fba45db2 KB |
1718 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
1719 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 1720 | { |
d01949b6 | 1721 | struct remote_state *rs = get_remote_state (); |
c906108c | 1722 | static threadref echo_nextthread; |
c906108c SS |
1723 | int result = 1; |
1724 | ||
23860348 | 1725 | /* Trancate result limit to be smaller than the packet size. */ |
ea9c271d DJ |
1726 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) >= get_remote_packet_size ()) |
1727 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; | |
c906108c | 1728 | |
6d820c5c DJ |
1729 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
1730 | putpkt (rs->buf); | |
1731 | getpkt (&rs->buf, &rs->buf_size, 0); | |
c906108c SS |
1732 | |
1733 | *result_count = | |
6d820c5c | 1734 | parse_threadlist_response (rs->buf + 2, result_limit, &echo_nextthread, |
c906108c SS |
1735 | threadlist, done); |
1736 | ||
1737 | if (!threadmatch (&echo_nextthread, nextthread)) | |
1738 | { | |
23860348 MS |
1739 | /* FIXME: This is a good reason to drop the packet. */ |
1740 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
1741 | /* Possabilities : |
1742 | retransmit immediatly - race conditions | |
1743 | retransmit after timeout - yes | |
1744 | exit | |
1745 | wait for packet, then exit | |
1746 | */ | |
8a3fe4f8 | 1747 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 1748 | return 0; /* I choose simply exiting. */ |
c906108c SS |
1749 | } |
1750 | if (*result_count <= 0) | |
1751 | { | |
1752 | if (*done != 1) | |
1753 | { | |
8a3fe4f8 | 1754 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
1755 | result = 0; |
1756 | } | |
1757 | return result; /* break; */ | |
1758 | } | |
1759 | if (*result_count > result_limit) | |
1760 | { | |
1761 | *result_count = 0; | |
8a3fe4f8 | 1762 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
1763 | return 0; |
1764 | } | |
1765 | return result; | |
1766 | } | |
1767 | ||
23860348 MS |
1768 | /* This is the interface between remote and threads, remotes upper |
1769 | interface. */ | |
c906108c SS |
1770 | |
1771 | /* remote_find_new_threads retrieves the thread list and for each | |
1772 | thread in the list, looks up the thread in GDB's internal list, | |
1773 | ading the thread if it does not already exist. This involves | |
1774 | getting partial thread lists from the remote target so, polling the | |
1775 | quit_flag is required. */ | |
1776 | ||
1777 | ||
23860348 | 1778 | /* About this many threadisds fit in a packet. */ |
c906108c SS |
1779 | |
1780 | #define MAXTHREADLISTRESULTS 32 | |
1781 | ||
1782 | static int | |
fba45db2 KB |
1783 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
1784 | int looplimit) | |
c906108c SS |
1785 | { |
1786 | int done, i, result_count; | |
1787 | int startflag = 1; | |
1788 | int result = 1; | |
1789 | int loopcount = 0; | |
1790 | static threadref nextthread; | |
1791 | static threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
1792 | ||
1793 | done = 0; | |
1794 | while (!done) | |
1795 | { | |
1796 | if (loopcount++ > looplimit) | |
1797 | { | |
1798 | result = 0; | |
8a3fe4f8 | 1799 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
1800 | break; |
1801 | } | |
1802 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS, | |
1803 | &done, &result_count, resultthreadlist)) | |
1804 | { | |
1805 | result = 0; | |
1806 | break; | |
1807 | } | |
23860348 | 1808 | /* Clear for later iterations. */ |
c906108c SS |
1809 | startflag = 0; |
1810 | /* Setup to resume next batch of thread references, set nextthread. */ | |
1811 | if (result_count >= 1) | |
1812 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |
1813 | i = 0; | |
1814 | while (result_count--) | |
1815 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |
1816 | break; | |
1817 | } | |
1818 | return result; | |
1819 | } | |
1820 | ||
1821 | static int | |
fba45db2 | 1822 | remote_newthread_step (threadref *ref, void *context) |
c906108c | 1823 | { |
39f77062 | 1824 | ptid_t ptid; |
c906108c | 1825 | |
39f77062 KB |
1826 | ptid = pid_to_ptid (threadref_to_int (ref)); |
1827 | ||
1828 | if (!in_thread_list (ptid)) | |
1829 | add_thread (ptid); | |
c906108c SS |
1830 | return 1; /* continue iterator */ |
1831 | } | |
1832 | ||
1833 | #define CRAZY_MAX_THREADS 1000 | |
1834 | ||
39f77062 KB |
1835 | static ptid_t |
1836 | remote_current_thread (ptid_t oldpid) | |
c906108c | 1837 | { |
d01949b6 | 1838 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1839 | |
1840 | putpkt ("qC"); | |
6d820c5c | 1841 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1842 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
c273b20f JB |
1843 | /* Use strtoul here, so we'll correctly parse values whose highest |
1844 | bit is set. The protocol carries them as a simple series of | |
1845 | hex digits; in the absence of a sign, strtol will see such | |
1846 | values as positive numbers out of range for signed 'long', and | |
1847 | return LONG_MAX to indicate an overflow. */ | |
2e9f7625 | 1848 | return pid_to_ptid (strtoul (&rs->buf[2], NULL, 16)); |
c906108c SS |
1849 | else |
1850 | return oldpid; | |
1851 | } | |
1852 | ||
802188a7 RM |
1853 | /* Find new threads for info threads command. |
1854 | * Original version, using John Metzler's thread protocol. | |
9d1f7ab2 | 1855 | */ |
cce74817 JM |
1856 | |
1857 | static void | |
fba45db2 | 1858 | remote_find_new_threads (void) |
c906108c | 1859 | { |
c5aa993b JM |
1860 | remote_threadlist_iterator (remote_newthread_step, 0, |
1861 | CRAZY_MAX_THREADS); | |
39f77062 KB |
1862 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) /* ack ack ack */ |
1863 | inferior_ptid = remote_current_thread (inferior_ptid); | |
c906108c SS |
1864 | } |
1865 | ||
9d1f7ab2 MS |
1866 | /* |
1867 | * Find all threads for info threads command. | |
1868 | * Uses new thread protocol contributed by Cisco. | |
1869 | * Falls back and attempts to use the older method (above) | |
1870 | * if the target doesn't respond to the new method. | |
1871 | */ | |
1872 | ||
0f71a2f6 JM |
1873 | static void |
1874 | remote_threads_info (void) | |
1875 | { | |
d01949b6 | 1876 | struct remote_state *rs = get_remote_state (); |
085dd6e6 | 1877 | char *bufp; |
0f71a2f6 JM |
1878 | int tid; |
1879 | ||
1880 | if (remote_desc == 0) /* paranoia */ | |
8a3fe4f8 | 1881 | error (_("Command can only be used when connected to the remote target.")); |
0f71a2f6 | 1882 | |
9d1f7ab2 MS |
1883 | if (use_threadinfo_query) |
1884 | { | |
1885 | putpkt ("qfThreadInfo"); | |
6d820c5c | 1886 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1887 | bufp = rs->buf; |
9d1f7ab2 | 1888 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 1889 | { |
9d1f7ab2 MS |
1890 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
1891 | { | |
1892 | do | |
1893 | { | |
c273b20f JB |
1894 | /* Use strtoul here, so we'll correctly parse values |
1895 | whose highest bit is set. The protocol carries | |
1896 | them as a simple series of hex digits; in the | |
1897 | absence of a sign, strtol will see such values as | |
1898 | positive numbers out of range for signed 'long', | |
1899 | and return LONG_MAX to indicate an overflow. */ | |
1900 | tid = strtoul (bufp, &bufp, 16); | |
39f77062 KB |
1901 | if (tid != 0 && !in_thread_list (pid_to_ptid (tid))) |
1902 | add_thread (pid_to_ptid (tid)); | |
9d1f7ab2 MS |
1903 | } |
1904 | while (*bufp++ == ','); /* comma-separated list */ | |
1905 | putpkt ("qsThreadInfo"); | |
6d820c5c | 1906 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1907 | bufp = rs->buf; |
9d1f7ab2 MS |
1908 | } |
1909 | return; /* done */ | |
1910 | } | |
1911 | } | |
1912 | ||
23860348 | 1913 | /* Else fall back to old method based on jmetzler protocol. */ |
9d1f7ab2 MS |
1914 | use_threadinfo_query = 0; |
1915 | remote_find_new_threads (); | |
1916 | return; | |
1917 | } | |
1918 | ||
802188a7 | 1919 | /* |
9d1f7ab2 MS |
1920 | * Collect a descriptive string about the given thread. |
1921 | * The target may say anything it wants to about the thread | |
1922 | * (typically info about its blocked / runnable state, name, etc.). | |
1923 | * This string will appear in the info threads display. | |
802188a7 | 1924 | * |
9d1f7ab2 MS |
1925 | * Optional: targets are not required to implement this function. |
1926 | */ | |
1927 | ||
1928 | static char * | |
1929 | remote_threads_extra_info (struct thread_info *tp) | |
1930 | { | |
d01949b6 | 1931 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
1932 | int result; |
1933 | int set; | |
1934 | threadref id; | |
1935 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 1936 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
1937 | int n = 0; /* position in display_buf */ |
1938 | ||
1939 | if (remote_desc == 0) /* paranoia */ | |
8e65ff28 | 1940 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 1941 | _("remote_threads_extra_info")); |
9d1f7ab2 MS |
1942 | |
1943 | if (use_threadextra_query) | |
1944 | { | |
2e9f7625 | 1945 | xsnprintf (rs->buf, get_remote_packet_size (), "qThreadExtraInfo,%x", |
ecbc58df | 1946 | PIDGET (tp->ptid)); |
2e9f7625 | 1947 | putpkt (rs->buf); |
6d820c5c | 1948 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1949 | if (rs->buf[0] != 0) |
9d1f7ab2 | 1950 | { |
2e9f7625 DJ |
1951 | n = min (strlen (rs->buf) / 2, sizeof (display_buf)); |
1952 | result = hex2bin (rs->buf, (gdb_byte *) display_buf, n); | |
30559e10 | 1953 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
1954 | return display_buf; |
1955 | } | |
0f71a2f6 | 1956 | } |
9d1f7ab2 MS |
1957 | |
1958 | /* If the above query fails, fall back to the old method. */ | |
1959 | use_threadextra_query = 0; | |
1960 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
1961 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
39f77062 | 1962 | int_to_threadref (&id, PIDGET (tp->ptid)); |
9d1f7ab2 MS |
1963 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
1964 | if (threadinfo.active) | |
0f71a2f6 | 1965 | { |
9d1f7ab2 | 1966 | if (*threadinfo.shortname) |
2bc416ba | 1967 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
ecbc58df | 1968 | " Name: %s,", threadinfo.shortname); |
9d1f7ab2 | 1969 | if (*threadinfo.display) |
2bc416ba | 1970 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 1971 | " State: %s,", threadinfo.display); |
9d1f7ab2 | 1972 | if (*threadinfo.more_display) |
2bc416ba | 1973 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 1974 | " Priority: %s", threadinfo.more_display); |
9d1f7ab2 MS |
1975 | |
1976 | if (n > 0) | |
c5aa993b | 1977 | { |
23860348 | 1978 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
1979 | if (',' == display_buf[n-1]) |
1980 | display_buf[n-1] = ' '; | |
1981 | return display_buf; | |
c5aa993b | 1982 | } |
0f71a2f6 | 1983 | } |
9d1f7ab2 | 1984 | return NULL; |
0f71a2f6 | 1985 | } |
c906108c | 1986 | \f |
c5aa993b | 1987 | |
24b06219 | 1988 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
1989 | |
1990 | static void | |
fba45db2 | 1991 | extended_remote_restart (void) |
c906108c | 1992 | { |
d01949b6 | 1993 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1994 | |
1995 | /* Send the restart command; for reasons I don't understand the | |
1996 | remote side really expects a number after the "R". */ | |
ea9c271d | 1997 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); |
6d820c5c | 1998 | putpkt (rs->buf); |
c906108c | 1999 | |
ad9a8f3f | 2000 | remote_fileio_reset (); |
2bc416ba | 2001 | |
c906108c SS |
2002 | /* Now query for status so this looks just like we restarted |
2003 | gdbserver from scratch. */ | |
2004 | putpkt ("?"); | |
01d3a6ce | 2005 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c SS |
2006 | } |
2007 | \f | |
2008 | /* Clean up connection to a remote debugger. */ | |
2009 | ||
c906108c | 2010 | static void |
fba45db2 | 2011 | remote_close (int quitting) |
c906108c SS |
2012 | { |
2013 | if (remote_desc) | |
2cd58942 | 2014 | serial_close (remote_desc); |
c906108c SS |
2015 | remote_desc = NULL; |
2016 | } | |
2017 | ||
23860348 | 2018 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
2019 | |
2020 | static void | |
fba45db2 | 2021 | get_offsets (void) |
c906108c | 2022 | { |
d01949b6 | 2023 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 2024 | char *buf; |
085dd6e6 | 2025 | char *ptr; |
31d99776 DJ |
2026 | int lose, num_segments = 0, do_sections, do_segments; |
2027 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
c906108c | 2028 | struct section_offsets *offs; |
31d99776 DJ |
2029 | struct symfile_segment_data *data; |
2030 | ||
2031 | if (symfile_objfile == NULL) | |
2032 | return; | |
c906108c SS |
2033 | |
2034 | putpkt ("qOffsets"); | |
6d820c5c | 2035 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2036 | buf = rs->buf; |
c906108c SS |
2037 | |
2038 | if (buf[0] == '\000') | |
2039 | return; /* Return silently. Stub doesn't support | |
23860348 | 2040 | this command. */ |
c906108c SS |
2041 | if (buf[0] == 'E') |
2042 | { | |
8a3fe4f8 | 2043 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
2044 | return; |
2045 | } | |
2046 | ||
2047 | /* Pick up each field in turn. This used to be done with scanf, but | |
2048 | scanf will make trouble if CORE_ADDR size doesn't match | |
2049 | conversion directives correctly. The following code will work | |
2050 | with any size of CORE_ADDR. */ | |
2051 | text_addr = data_addr = bss_addr = 0; | |
2052 | ptr = buf; | |
2053 | lose = 0; | |
2054 | ||
2055 | if (strncmp (ptr, "Text=", 5) == 0) | |
2056 | { | |
2057 | ptr += 5; | |
2058 | /* Don't use strtol, could lose on big values. */ | |
2059 | while (*ptr && *ptr != ';') | |
2060 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 2061 | |
31d99776 DJ |
2062 | if (strncmp (ptr, ";Data=", 6) == 0) |
2063 | { | |
2064 | ptr += 6; | |
2065 | while (*ptr && *ptr != ';') | |
2066 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
2067 | } | |
2068 | else | |
2069 | lose = 1; | |
2070 | ||
2071 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
2072 | { | |
2073 | ptr += 5; | |
2074 | while (*ptr && *ptr != ';') | |
2075 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 2076 | |
31d99776 DJ |
2077 | if (bss_addr != data_addr) |
2078 | warning (_("Target reported unsupported offsets: %s"), buf); | |
2079 | } | |
2080 | else | |
2081 | lose = 1; | |
2082 | } | |
2083 | else if (strncmp (ptr, "TextSeg=", 8) == 0) | |
c906108c | 2084 | { |
31d99776 DJ |
2085 | ptr += 8; |
2086 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 2087 | while (*ptr && *ptr != ';') |
31d99776 DJ |
2088 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
2089 | num_segments = 1; | |
2090 | ||
2091 | if (strncmp (ptr, ";DataSeg=", 9) == 0) | |
2092 | { | |
2093 | ptr += 9; | |
2094 | while (*ptr && *ptr != ';') | |
2095 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
2096 | num_segments++; | |
2097 | } | |
c906108c SS |
2098 | } |
2099 | else | |
2100 | lose = 1; | |
2101 | ||
2102 | if (lose) | |
8a3fe4f8 | 2103 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
2104 | else if (*ptr != '\0') |
2105 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 2106 | |
802188a7 | 2107 | offs = ((struct section_offsets *) |
a39a16c4 | 2108 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 2109 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 2110 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 2111 | |
31d99776 DJ |
2112 | data = get_symfile_segment_data (symfile_objfile->obfd); |
2113 | do_segments = (data != NULL); | |
2114 | do_sections = num_segments == 0; | |
c906108c | 2115 | |
28c32713 | 2116 | if (num_segments > 0) |
31d99776 | 2117 | { |
31d99776 DJ |
2118 | segments[0] = text_addr; |
2119 | segments[1] = data_addr; | |
2120 | } | |
28c32713 JB |
2121 | /* If we have two segments, we can still try to relocate everything |
2122 | by assuming that the .text and .data offsets apply to the whole | |
2123 | text and data segments. Convert the offsets given in the packet | |
2124 | to base addresses for symfile_map_offsets_to_segments. */ | |
2125 | else if (data && data->num_segments == 2) | |
2126 | { | |
2127 | segments[0] = data->segment_bases[0] + text_addr; | |
2128 | segments[1] = data->segment_bases[1] + data_addr; | |
2129 | num_segments = 2; | |
2130 | } | |
2131 | /* There's no way to relocate by segment. */ | |
2132 | else | |
2133 | do_segments = 0; | |
31d99776 DJ |
2134 | |
2135 | if (do_segments) | |
2136 | { | |
2137 | int ret = symfile_map_offsets_to_segments (symfile_objfile->obfd, data, | |
2138 | offs, num_segments, segments); | |
2139 | ||
2140 | if (ret == 0 && !do_sections) | |
2141 | error (_("Can not handle qOffsets TextSeg response with this symbol file")); | |
2142 | ||
2143 | if (ret > 0) | |
2144 | do_sections = 0; | |
2145 | } | |
c906108c | 2146 | |
9ef895d6 DJ |
2147 | if (data) |
2148 | free_symfile_segment_data (data); | |
31d99776 DJ |
2149 | |
2150 | if (do_sections) | |
2151 | { | |
2152 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; | |
2153 | ||
2154 | /* This is a temporary kludge to force data and bss to use the same offsets | |
2155 | because that's what nlmconv does now. The real solution requires changes | |
2156 | to the stub and remote.c that I don't have time to do right now. */ | |
2157 | ||
2158 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; | |
2159 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
2160 | } | |
c906108c SS |
2161 | |
2162 | objfile_relocate (symfile_objfile, offs); | |
2163 | } | |
2164 | ||
8621d6a9 | 2165 | /* Stub for catch_exception. */ |
0f71a2f6 | 2166 | |
9cbc821d | 2167 | static void |
8621d6a9 | 2168 | remote_start_remote (struct ui_out *uiout, void *from_tty_p) |
c906108c | 2169 | { |
8621d6a9 DJ |
2170 | int from_tty = * (int *) from_tty_p; |
2171 | ||
23860348 | 2172 | immediate_quit++; /* Allow user to interrupt it. */ |
c906108c SS |
2173 | |
2174 | /* Ack any packet which the remote side has already sent. */ | |
2cd58942 | 2175 | serial_write (remote_desc, "+", 1); |
c906108c SS |
2176 | |
2177 | /* Let the stub know that we want it to return the thread. */ | |
2178 | set_thread (-1, 0); | |
2179 | ||
39f77062 | 2180 | inferior_ptid = remote_current_thread (inferior_ptid); |
c906108c | 2181 | |
23860348 | 2182 | get_offsets (); /* Get text, data & bss offsets. */ |
c906108c | 2183 | |
23860348 | 2184 | putpkt ("?"); /* Initiate a query from remote machine. */ |
8edbea78 | 2185 | immediate_quit--; |
c906108c | 2186 | |
8621d6a9 | 2187 | start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
c906108c SS |
2188 | } |
2189 | ||
2190 | /* Open a connection to a remote debugger. | |
2191 | NAME is the filename used for communication. */ | |
2192 | ||
2193 | static void | |
fba45db2 | 2194 | remote_open (char *name, int from_tty) |
c906108c | 2195 | { |
92d1e331 | 2196 | remote_open_1 (name, from_tty, &remote_ops, 0, 0); |
c906108c SS |
2197 | } |
2198 | ||
23860348 | 2199 | /* Just like remote_open, but with asynchronous support. */ |
43ff13b4 | 2200 | static void |
fba45db2 | 2201 | remote_async_open (char *name, int from_tty) |
43ff13b4 | 2202 | { |
92d1e331 | 2203 | remote_open_1 (name, from_tty, &remote_async_ops, 0, 1); |
43ff13b4 JM |
2204 | } |
2205 | ||
c906108c SS |
2206 | /* Open a connection to a remote debugger using the extended |
2207 | remote gdb protocol. NAME is the filename used for communication. */ | |
2208 | ||
2209 | static void | |
fba45db2 | 2210 | extended_remote_open (char *name, int from_tty) |
c906108c | 2211 | { |
92d1e331 DJ |
2212 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */, |
2213 | 0 /* async_p */); | |
c906108c SS |
2214 | } |
2215 | ||
23860348 | 2216 | /* Just like extended_remote_open, but with asynchronous support. */ |
43ff13b4 | 2217 | static void |
fba45db2 | 2218 | extended_remote_async_open (char *name, int from_tty) |
43ff13b4 | 2219 | { |
92d1e331 DJ |
2220 | remote_open_1 (name, from_tty, &extended_async_remote_ops, |
2221 | 1 /*extended_p */, 1 /* async_p */); | |
43ff13b4 JM |
2222 | } |
2223 | ||
c906108c SS |
2224 | /* Generic code for opening a connection to a remote target. */ |
2225 | ||
d471ea57 AC |
2226 | static void |
2227 | init_all_packet_configs (void) | |
2228 | { | |
2229 | int i; | |
444abaca DJ |
2230 | for (i = 0; i < PACKET_MAX; i++) |
2231 | update_packet_config (&remote_protocol_packets[i]); | |
d471ea57 AC |
2232 | } |
2233 | ||
23860348 | 2234 | /* Symbol look-up. */ |
dc8acb97 MS |
2235 | |
2236 | static void | |
2237 | remote_check_symbols (struct objfile *objfile) | |
2238 | { | |
d01949b6 | 2239 | struct remote_state *rs = get_remote_state (); |
dc8acb97 MS |
2240 | char *msg, *reply, *tmp; |
2241 | struct minimal_symbol *sym; | |
2242 | int end; | |
2243 | ||
444abaca | 2244 | if (remote_protocol_packets[PACKET_qSymbol].support == PACKET_DISABLE) |
dc8acb97 MS |
2245 | return; |
2246 | ||
6d820c5c DJ |
2247 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
2248 | because we need both at the same time. */ | |
ea9c271d | 2249 | msg = alloca (get_remote_packet_size ()); |
6d820c5c | 2250 | |
23860348 | 2251 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
2252 | |
2253 | putpkt ("qSymbol::"); | |
6d820c5c DJ |
2254 | getpkt (&rs->buf, &rs->buf_size, 0); |
2255 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSymbol]); | |
2e9f7625 | 2256 | reply = rs->buf; |
dc8acb97 MS |
2257 | |
2258 | while (strncmp (reply, "qSymbol:", 8) == 0) | |
2259 | { | |
2260 | tmp = &reply[8]; | |
cfd77fa1 | 2261 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
2262 | msg[end] = '\0'; |
2263 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
2264 | if (sym == NULL) | |
ea9c271d | 2265 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
dc8acb97 | 2266 | else |
2bbe3cc1 DJ |
2267 | { |
2268 | CORE_ADDR sym_addr = SYMBOL_VALUE_ADDRESS (sym); | |
2269 | ||
2270 | /* If this is a function address, return the start of code | |
2271 | instead of any data function descriptor. */ | |
2272 | sym_addr = gdbarch_convert_from_func_ptr_addr (current_gdbarch, | |
2273 | sym_addr, | |
2274 | ¤t_target); | |
2275 | ||
2276 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", | |
2277 | paddr_nz (sym_addr), &reply[8]); | |
2278 | } | |
2279 | ||
dc8acb97 | 2280 | putpkt (msg); |
6d820c5c | 2281 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2282 | reply = rs->buf; |
dc8acb97 MS |
2283 | } |
2284 | } | |
2285 | ||
9db8d71f DJ |
2286 | static struct serial * |
2287 | remote_serial_open (char *name) | |
2288 | { | |
2289 | static int udp_warning = 0; | |
2290 | ||
2291 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
2292 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
2293 | serial connection is reliable and not the serial connection promising | |
2294 | to be. */ | |
2295 | if (!udp_warning && strncmp (name, "udp:", 4) == 0) | |
2296 | { | |
8a3fe4f8 AC |
2297 | warning (_("\ |
2298 | The remote protocol may be unreliable over UDP.\n\ | |
2299 | Some events may be lost, rendering further debugging impossible.")); | |
9db8d71f DJ |
2300 | udp_warning = 1; |
2301 | } | |
2302 | ||
2303 | return serial_open (name); | |
2304 | } | |
2305 | ||
be2a5f71 DJ |
2306 | /* This type describes each known response to the qSupported |
2307 | packet. */ | |
2308 | struct protocol_feature | |
2309 | { | |
2310 | /* The name of this protocol feature. */ | |
2311 | const char *name; | |
2312 | ||
2313 | /* The default for this protocol feature. */ | |
2314 | enum packet_support default_support; | |
2315 | ||
2316 | /* The function to call when this feature is reported, or after | |
2317 | qSupported processing if the feature is not supported. | |
2318 | The first argument points to this structure. The second | |
2319 | argument indicates whether the packet requested support be | |
2320 | enabled, disabled, or probed (or the default, if this function | |
2321 | is being called at the end of processing and this feature was | |
2322 | not reported). The third argument may be NULL; if not NULL, it | |
2323 | is a NUL-terminated string taken from the packet following | |
2324 | this feature's name and an equals sign. */ | |
2325 | void (*func) (const struct protocol_feature *, enum packet_support, | |
2326 | const char *); | |
2327 | ||
2328 | /* The corresponding packet for this feature. Only used if | |
2329 | FUNC is remote_supported_packet. */ | |
2330 | int packet; | |
2331 | }; | |
2332 | ||
be2a5f71 DJ |
2333 | static void |
2334 | remote_supported_packet (const struct protocol_feature *feature, | |
2335 | enum packet_support support, | |
2336 | const char *argument) | |
2337 | { | |
2338 | if (argument) | |
2339 | { | |
2340 | warning (_("Remote qSupported response supplied an unexpected value for" | |
2341 | " \"%s\"."), feature->name); | |
2342 | return; | |
2343 | } | |
2344 | ||
2345 | if (remote_protocol_packets[feature->packet].support | |
2346 | == PACKET_SUPPORT_UNKNOWN) | |
2347 | remote_protocol_packets[feature->packet].support = support; | |
2348 | } | |
be2a5f71 DJ |
2349 | |
2350 | static void | |
2351 | remote_packet_size (const struct protocol_feature *feature, | |
2352 | enum packet_support support, const char *value) | |
2353 | { | |
2354 | struct remote_state *rs = get_remote_state (); | |
2355 | ||
2356 | int packet_size; | |
2357 | char *value_end; | |
2358 | ||
2359 | if (support != PACKET_ENABLE) | |
2360 | return; | |
2361 | ||
2362 | if (value == NULL || *value == '\0') | |
2363 | { | |
2364 | warning (_("Remote target reported \"%s\" without a size."), | |
2365 | feature->name); | |
2366 | return; | |
2367 | } | |
2368 | ||
2369 | errno = 0; | |
2370 | packet_size = strtol (value, &value_end, 16); | |
2371 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
2372 | { | |
2373 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
2374 | feature->name, value); | |
2375 | return; | |
2376 | } | |
2377 | ||
2378 | if (packet_size > MAX_REMOTE_PACKET_SIZE) | |
2379 | { | |
2380 | warning (_("limiting remote suggested packet size (%d bytes) to %d"), | |
2381 | packet_size, MAX_REMOTE_PACKET_SIZE); | |
2382 | packet_size = MAX_REMOTE_PACKET_SIZE; | |
2383 | } | |
2384 | ||
2385 | /* Record the new maximum packet size. */ | |
2386 | rs->explicit_packet_size = packet_size; | |
2387 | } | |
2388 | ||
2389 | static struct protocol_feature remote_protocol_features[] = { | |
0876f84a | 2390 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 2391 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 2392 | PACKET_qXfer_auxv }, |
23181151 DJ |
2393 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
2394 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
2395 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
2396 | PACKET_qXfer_libraries }, | |
fd79ecee | 2397 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 2398 | PACKET_qXfer_memory_map }, |
4de6483e UW |
2399 | { "qXfer:spu:read", PACKET_DISABLE, remote_supported_packet, |
2400 | PACKET_qXfer_spu_read }, | |
2401 | { "qXfer:spu:write", PACKET_DISABLE, remote_supported_packet, | |
2402 | PACKET_qXfer_spu_write }, | |
89be2091 DJ |
2403 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
2404 | PACKET_QPassSignals }, | |
be2a5f71 DJ |
2405 | }; |
2406 | ||
2407 | static void | |
2408 | remote_query_supported (void) | |
2409 | { | |
2410 | struct remote_state *rs = get_remote_state (); | |
2411 | char *next; | |
2412 | int i; | |
2413 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
2414 | ||
2415 | /* The packet support flags are handled differently for this packet | |
2416 | than for most others. We treat an error, a disabled packet, and | |
2417 | an empty response identically: any features which must be reported | |
2418 | to be used will be automatically disabled. An empty buffer | |
2419 | accomplishes this, since that is also the representation for a list | |
2420 | containing no features. */ | |
2421 | ||
2422 | rs->buf[0] = 0; | |
2423 | if (remote_protocol_packets[PACKET_qSupported].support != PACKET_DISABLE) | |
2424 | { | |
2425 | putpkt ("qSupported"); | |
2426 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2427 | ||
2428 | /* If an error occured, warn, but do not return - just reset the | |
2429 | buffer to empty and go on to disable features. */ | |
2430 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
2431 | == PACKET_ERROR) | |
2432 | { | |
2433 | warning (_("Remote failure reply: %s"), rs->buf); | |
2434 | rs->buf[0] = 0; | |
2435 | } | |
2436 | } | |
2437 | ||
2438 | memset (seen, 0, sizeof (seen)); | |
2439 | ||
2440 | next = rs->buf; | |
2441 | while (*next) | |
2442 | { | |
2443 | enum packet_support is_supported; | |
2444 | char *p, *end, *name_end, *value; | |
2445 | ||
2446 | /* First separate out this item from the rest of the packet. If | |
2447 | there's another item after this, we overwrite the separator | |
2448 | (terminated strings are much easier to work with). */ | |
2449 | p = next; | |
2450 | end = strchr (p, ';'); | |
2451 | if (end == NULL) | |
2452 | { | |
2453 | end = p + strlen (p); | |
2454 | next = end; | |
2455 | } | |
2456 | else | |
2457 | { | |
89be2091 DJ |
2458 | *end = '\0'; |
2459 | next = end + 1; | |
2460 | ||
be2a5f71 DJ |
2461 | if (end == p) |
2462 | { | |
2463 | warning (_("empty item in \"qSupported\" response")); | |
2464 | continue; | |
2465 | } | |
be2a5f71 DJ |
2466 | } |
2467 | ||
2468 | name_end = strchr (p, '='); | |
2469 | if (name_end) | |
2470 | { | |
2471 | /* This is a name=value entry. */ | |
2472 | is_supported = PACKET_ENABLE; | |
2473 | value = name_end + 1; | |
2474 | *name_end = '\0'; | |
2475 | } | |
2476 | else | |
2477 | { | |
2478 | value = NULL; | |
2479 | switch (end[-1]) | |
2480 | { | |
2481 | case '+': | |
2482 | is_supported = PACKET_ENABLE; | |
2483 | break; | |
2484 | ||
2485 | case '-': | |
2486 | is_supported = PACKET_DISABLE; | |
2487 | break; | |
2488 | ||
2489 | case '?': | |
2490 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
2491 | break; | |
2492 | ||
2493 | default: | |
2494 | warning (_("unrecognized item \"%s\" in \"qSupported\" response"), p); | |
2495 | continue; | |
2496 | } | |
2497 | end[-1] = '\0'; | |
2498 | } | |
2499 | ||
2500 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
2501 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
2502 | { | |
2503 | const struct protocol_feature *feature; | |
2504 | ||
2505 | seen[i] = 1; | |
2506 | feature = &remote_protocol_features[i]; | |
2507 | feature->func (feature, is_supported, value); | |
2508 | break; | |
2509 | } | |
2510 | } | |
2511 | ||
2512 | /* If we increased the packet size, make sure to increase the global | |
2513 | buffer size also. We delay this until after parsing the entire | |
2514 | qSupported packet, because this is the same buffer we were | |
2515 | parsing. */ | |
2516 | if (rs->buf_size < rs->explicit_packet_size) | |
2517 | { | |
2518 | rs->buf_size = rs->explicit_packet_size; | |
2519 | rs->buf = xrealloc (rs->buf, rs->buf_size); | |
2520 | } | |
2521 | ||
2522 | /* Handle the defaults for unmentioned features. */ | |
2523 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
2524 | if (!seen[i]) | |
2525 | { | |
2526 | const struct protocol_feature *feature; | |
2527 | ||
2528 | feature = &remote_protocol_features[i]; | |
2529 | feature->func (feature, feature->default_support, NULL); | |
2530 | } | |
2531 | } | |
2532 | ||
2533 | ||
c906108c | 2534 | static void |
fba45db2 | 2535 | remote_open_1 (char *name, int from_tty, struct target_ops *target, |
92d1e331 | 2536 | int extended_p, int async_p) |
c906108c | 2537 | { |
d01949b6 | 2538 | struct remote_state *rs = get_remote_state (); |
c906108c | 2539 | if (name == 0) |
8a3fe4f8 | 2540 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 2541 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 2542 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 2543 | |
23860348 | 2544 | /* See FIXME above. */ |
92d1e331 DJ |
2545 | if (!async_p) |
2546 | wait_forever_enabled_p = 1; | |
6426a772 | 2547 | |
c906108c SS |
2548 | target_preopen (from_tty); |
2549 | ||
2550 | unpush_target (target); | |
2551 | ||
89be2091 DJ |
2552 | /* Make sure we send the passed signals list the next time we resume. */ |
2553 | xfree (last_pass_packet); | |
2554 | last_pass_packet = NULL; | |
2555 | ||
ad9a8f3f | 2556 | remote_fileio_reset (); |
1dd41f16 NS |
2557 | reopen_exec_file (); |
2558 | reread_symbols (); | |
2559 | ||
9db8d71f | 2560 | remote_desc = remote_serial_open (name); |
c906108c SS |
2561 | if (!remote_desc) |
2562 | perror_with_name (name); | |
2563 | ||
2564 | if (baud_rate != -1) | |
2565 | { | |
2cd58942 | 2566 | if (serial_setbaudrate (remote_desc, baud_rate)) |
c906108c | 2567 | { |
9b74d5d3 KB |
2568 | /* The requested speed could not be set. Error out to |
2569 | top level after closing remote_desc. Take care to | |
2570 | set remote_desc to NULL to avoid closing remote_desc | |
2571 | more than once. */ | |
2cd58942 | 2572 | serial_close (remote_desc); |
9b74d5d3 | 2573 | remote_desc = NULL; |
c906108c SS |
2574 | perror_with_name (name); |
2575 | } | |
2576 | } | |
2577 | ||
2cd58942 | 2578 | serial_raw (remote_desc); |
c906108c SS |
2579 | |
2580 | /* If there is something sitting in the buffer we might take it as a | |
2581 | response to a command, which would be bad. */ | |
2cd58942 | 2582 | serial_flush_input (remote_desc); |
c906108c SS |
2583 | |
2584 | if (from_tty) | |
2585 | { | |
2586 | puts_filtered ("Remote debugging using "); | |
2587 | puts_filtered (name); | |
2588 | puts_filtered ("\n"); | |
2589 | } | |
23860348 | 2590 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 2591 | |
be2a5f71 DJ |
2592 | /* Reset the target state; these things will be queried either by |
2593 | remote_query_supported or as they are needed. */ | |
d471ea57 | 2594 | init_all_packet_configs (); |
be2a5f71 | 2595 | rs->explicit_packet_size = 0; |
802188a7 | 2596 | |
c5aa993b | 2597 | general_thread = -2; |
cce74817 | 2598 | continue_thread = -2; |
c906108c | 2599 | |
9d1f7ab2 MS |
2600 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
2601 | use_threadinfo_query = 1; | |
2602 | use_threadextra_query = 1; | |
2603 | ||
be2a5f71 DJ |
2604 | /* The first packet we send to the target is the optional "supported |
2605 | packets" request. If the target can answer this, it will tell us | |
2606 | which later probes to skip. */ | |
2607 | remote_query_supported (); | |
2608 | ||
424163ea DJ |
2609 | /* Next, if the target can specify a description, read it. We do |
2610 | this before anything involving memory or registers. */ | |
2611 | target_find_description (); | |
2612 | ||
c906108c SS |
2613 | /* Without this, some commands which require an active target (such |
2614 | as kill) won't work. This variable serves (at least) double duty | |
2615 | as both the pid of the target process (if it has such), and as a | |
2616 | flag indicating that a target is active. These functions should | |
2617 | be split out into seperate variables, especially since GDB will | |
2618 | someday have a notion of debugging several processes. */ | |
2619 | ||
39f77062 | 2620 | inferior_ptid = pid_to_ptid (MAGIC_NULL_PID); |
92d1e331 DJ |
2621 | |
2622 | if (async_p) | |
2623 | { | |
23860348 | 2624 | /* With this target we start out by owning the terminal. */ |
92d1e331 DJ |
2625 | remote_async_terminal_ours_p = 1; |
2626 | ||
2627 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
2628 | assumed that the target is already ready and able to respond to | |
2629 | requests. Unfortunately remote_start_remote() eventually calls | |
2630 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets | |
2631 | around this. Eventually a mechanism that allows | |
2632 | wait_for_inferior() to expect/get timeouts will be | |
23860348 | 2633 | implemented. */ |
92d1e331 DJ |
2634 | wait_forever_enabled_p = 0; |
2635 | } | |
2636 | ||
23860348 | 2637 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 2638 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 2639 | |
36918e70 | 2640 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
2641 | target (we'd otherwise be in an inconsistent state) and then |
2642 | propogate the error on up the exception chain. This ensures that | |
2643 | the caller doesn't stumble along blindly assuming that the | |
2644 | function succeeded. The CLI doesn't have this problem but other | |
2645 | UI's, such as MI do. | |
36918e70 AC |
2646 | |
2647 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
2648 | this function should return an error indication letting the | |
ce2826aa | 2649 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
2650 | ``target remote'' is directly wired to this function making that |
2651 | impossible. On a positive note, the CLI side of this problem has | |
2652 | been fixed - the function set_cmd_context() makes it possible for | |
2653 | all the ``target ....'' commands to share a common callback | |
2654 | function. See cli-dump.c. */ | |
109c3e39 AC |
2655 | { |
2656 | struct gdb_exception ex | |
8621d6a9 DJ |
2657 | = catch_exception (uiout, remote_start_remote, &from_tty, |
2658 | RETURN_MASK_ALL); | |
109c3e39 AC |
2659 | if (ex.reason < 0) |
2660 | { | |
2661 | pop_target (); | |
2662 | if (async_p) | |
2663 | wait_forever_enabled_p = 1; | |
2664 | throw_exception (ex); | |
2665 | } | |
2666 | } | |
c906108c | 2667 | |
92d1e331 DJ |
2668 | if (async_p) |
2669 | wait_forever_enabled_p = 1; | |
6426a772 JM |
2670 | |
2671 | if (extended_p) | |
43ff13b4 | 2672 | { |
6240bebf | 2673 | /* Tell the remote that we are using the extended protocol. */ |
6426a772 | 2674 | putpkt ("!"); |
6d820c5c | 2675 | getpkt (&rs->buf, &rs->buf_size, 0); |
43ff13b4 | 2676 | } |
a77053c2 | 2677 | |
23860348 | 2678 | if (exec_bfd) /* No use without an exec file. */ |
9353355f | 2679 | remote_check_symbols (symfile_objfile); |
43ff13b4 JM |
2680 | } |
2681 | ||
c906108c SS |
2682 | /* This takes a program previously attached to and detaches it. After |
2683 | this is done, GDB can be used to debug some other program. We | |
2684 | better not have left any breakpoints in the target program or it'll | |
2685 | die when it hits one. */ | |
2686 | ||
2687 | static void | |
fba45db2 | 2688 | remote_detach (char *args, int from_tty) |
c906108c | 2689 | { |
d01949b6 | 2690 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2691 | |
2692 | if (args) | |
8a3fe4f8 | 2693 | error (_("Argument given to \"detach\" when remotely debugging.")); |
c906108c SS |
2694 | |
2695 | /* Tell the remote target to detach. */ | |
6d820c5c | 2696 | strcpy (rs->buf, "D"); |
4ddda9b5 PA |
2697 | putpkt (rs->buf); |
2698 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2699 | ||
2700 | if (rs->buf[0] == 'E') | |
2701 | error (_("Can't detach process.")); | |
c906108c | 2702 | |
23860348 | 2703 | /* Unregister the file descriptor from the event loop. */ |
6ad8ae5c DJ |
2704 | if (target_is_async_p ()) |
2705 | serial_async (remote_desc, NULL, 0); | |
2706 | ||
cca728d0 | 2707 | target_mourn_inferior (); |
c906108c SS |
2708 | if (from_tty) |
2709 | puts_filtered ("Ending remote debugging.\n"); | |
2710 | } | |
2711 | ||
6ad8ae5c DJ |
2712 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
2713 | ||
43ff13b4 | 2714 | static void |
597320e7 | 2715 | remote_disconnect (struct target_ops *target, char *args, int from_tty) |
43ff13b4 | 2716 | { |
43ff13b4 | 2717 | if (args) |
8a3fe4f8 | 2718 | error (_("Argument given to \"detach\" when remotely debugging.")); |
43ff13b4 | 2719 | |
23860348 | 2720 | /* Unregister the file descriptor from the event loop. */ |
ed9a39eb | 2721 | if (target_is_async_p ()) |
2cd58942 | 2722 | serial_async (remote_desc, NULL, 0); |
43ff13b4 | 2723 | |
cca728d0 | 2724 | target_mourn_inferior (); |
43ff13b4 JM |
2725 | if (from_tty) |
2726 | puts_filtered ("Ending remote debugging.\n"); | |
2727 | } | |
2728 | ||
c906108c SS |
2729 | /* Convert hex digit A to a number. */ |
2730 | ||
30559e10 | 2731 | static int |
fba45db2 | 2732 | fromhex (int a) |
c906108c SS |
2733 | { |
2734 | if (a >= '0' && a <= '9') | |
2735 | return a - '0'; | |
2736 | else if (a >= 'a' && a <= 'f') | |
2737 | return a - 'a' + 10; | |
2738 | else if (a >= 'A' && a <= 'F') | |
2739 | return a - 'A' + 10; | |
c5aa993b | 2740 | else |
8a3fe4f8 | 2741 | error (_("Reply contains invalid hex digit %d"), a); |
c906108c SS |
2742 | } |
2743 | ||
30559e10 | 2744 | static int |
cfd77fa1 | 2745 | hex2bin (const char *hex, gdb_byte *bin, int count) |
30559e10 MS |
2746 | { |
2747 | int i; | |
2748 | ||
30559e10 MS |
2749 | for (i = 0; i < count; i++) |
2750 | { | |
2751 | if (hex[0] == 0 || hex[1] == 0) | |
2752 | { | |
2753 | /* Hex string is short, or of uneven length. | |
23860348 | 2754 | Return the count that has been converted so far. */ |
30559e10 MS |
2755 | return i; |
2756 | } | |
2757 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); | |
2758 | hex += 2; | |
2759 | } | |
2760 | return i; | |
2761 | } | |
2762 | ||
c906108c SS |
2763 | /* Convert number NIB to a hex digit. */ |
2764 | ||
2765 | static int | |
fba45db2 | 2766 | tohex (int nib) |
c906108c SS |
2767 | { |
2768 | if (nib < 10) | |
c5aa993b | 2769 | return '0' + nib; |
c906108c | 2770 | else |
c5aa993b | 2771 | return 'a' + nib - 10; |
c906108c | 2772 | } |
30559e10 MS |
2773 | |
2774 | static int | |
cfd77fa1 | 2775 | bin2hex (const gdb_byte *bin, char *hex, int count) |
30559e10 MS |
2776 | { |
2777 | int i; | |
23860348 | 2778 | /* May use a length, or a nul-terminated string as input. */ |
30559e10 | 2779 | if (count == 0) |
cfd77fa1 | 2780 | count = strlen ((char *) bin); |
30559e10 MS |
2781 | |
2782 | for (i = 0; i < count; i++) | |
2783 | { | |
2784 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
2785 | *hex++ = tohex (*bin++ & 0xf); | |
2786 | } | |
2787 | *hex = 0; | |
2788 | return i; | |
2789 | } | |
c906108c | 2790 | \f |
506fb367 DJ |
2791 | /* Check for the availability of vCont. This function should also check |
2792 | the response. */ | |
c906108c SS |
2793 | |
2794 | static void | |
6d820c5c | 2795 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 2796 | { |
2e9f7625 | 2797 | char *buf; |
6d820c5c | 2798 | |
2e9f7625 DJ |
2799 | strcpy (rs->buf, "vCont?"); |
2800 | putpkt (rs->buf); | |
6d820c5c | 2801 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2802 | buf = rs->buf; |
c906108c | 2803 | |
506fb367 DJ |
2804 | /* Make sure that the features we assume are supported. */ |
2805 | if (strncmp (buf, "vCont", 5) == 0) | |
2806 | { | |
2807 | char *p = &buf[5]; | |
2808 | int support_s, support_S, support_c, support_C; | |
2809 | ||
2810 | support_s = 0; | |
2811 | support_S = 0; | |
2812 | support_c = 0; | |
2813 | support_C = 0; | |
2814 | while (p && *p == ';') | |
2815 | { | |
2816 | p++; | |
2817 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2818 | support_s = 1; | |
2819 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2820 | support_S = 1; | |
2821 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2822 | support_c = 1; | |
2823 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2824 | support_C = 1; | |
2825 | ||
2826 | p = strchr (p, ';'); | |
2827 | } | |
c906108c | 2828 | |
506fb367 DJ |
2829 | /* If s, S, c, and C are not all supported, we can't use vCont. Clearing |
2830 | BUF will make packet_ok disable the packet. */ | |
2831 | if (!support_s || !support_S || !support_c || !support_C) | |
2832 | buf[0] = 0; | |
2833 | } | |
c906108c | 2834 | |
444abaca | 2835 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 2836 | } |
c906108c | 2837 | |
506fb367 DJ |
2838 | /* Resume the remote inferior by using a "vCont" packet. The thread |
2839 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
2840 | resumed thread should be single-stepped and/or signalled. If PTID's | |
2841 | PID is -1, then all threads are resumed; the thread to be stepped and/or | |
2842 | signalled is given in the global INFERIOR_PTID. This function returns | |
2843 | non-zero iff it resumes the inferior. | |
44eaed12 | 2844 | |
506fb367 DJ |
2845 | This function issues a strict subset of all possible vCont commands at the |
2846 | moment. */ | |
44eaed12 | 2847 | |
506fb367 DJ |
2848 | static int |
2849 | remote_vcont_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
2850 | { | |
2851 | struct remote_state *rs = get_remote_state (); | |
2852 | int pid = PIDGET (ptid); | |
2963ee1d | 2853 | char *buf = NULL, *outbuf; |
506fb367 | 2854 | struct cleanup *old_cleanup; |
44eaed12 | 2855 | |
444abaca | 2856 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 2857 | remote_vcont_probe (rs); |
44eaed12 | 2858 | |
444abaca | 2859 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_DISABLE) |
6d820c5c | 2860 | return 0; |
44eaed12 | 2861 | |
506fb367 DJ |
2862 | /* If we could generate a wider range of packets, we'd have to worry |
2863 | about overflowing BUF. Should there be a generic | |
2864 | "multi-part-packet" packet? */ | |
2865 | ||
2866 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) | |
c906108c | 2867 | { |
506fb367 DJ |
2868 | /* MAGIC_NULL_PTID means that we don't have any active threads, so we |
2869 | don't have any PID numbers the inferior will understand. Make sure | |
2870 | to only send forms that do not specify a PID. */ | |
2871 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d | 2872 | outbuf = xstrprintf ("vCont;S%02x", siggnal); |
506fb367 | 2873 | else if (step) |
2963ee1d | 2874 | outbuf = xstrprintf ("vCont;s"); |
506fb367 | 2875 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d | 2876 | outbuf = xstrprintf ("vCont;C%02x", siggnal); |
506fb367 | 2877 | else |
2963ee1d | 2878 | outbuf = xstrprintf ("vCont;c"); |
506fb367 DJ |
2879 | } |
2880 | else if (pid == -1) | |
2881 | { | |
2882 | /* Resume all threads, with preference for INFERIOR_PTID. */ | |
2883 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d DJ |
2884 | outbuf = xstrprintf ("vCont;S%02x:%x;c", siggnal, |
2885 | PIDGET (inferior_ptid)); | |
506fb367 | 2886 | else if (step) |
2963ee1d | 2887 | outbuf = xstrprintf ("vCont;s:%x;c", PIDGET (inferior_ptid)); |
506fb367 | 2888 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d DJ |
2889 | outbuf = xstrprintf ("vCont;C%02x:%x;c", siggnal, |
2890 | PIDGET (inferior_ptid)); | |
506fb367 | 2891 | else |
2963ee1d | 2892 | outbuf = xstrprintf ("vCont;c"); |
c906108c SS |
2893 | } |
2894 | else | |
506fb367 DJ |
2895 | { |
2896 | /* Scheduler locking; resume only PTID. */ | |
2897 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d | 2898 | outbuf = xstrprintf ("vCont;S%02x:%x", siggnal, pid); |
506fb367 | 2899 | else if (step) |
2963ee1d | 2900 | outbuf = xstrprintf ("vCont;s:%x", pid); |
506fb367 | 2901 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d | 2902 | outbuf = xstrprintf ("vCont;C%02x:%x", siggnal, pid); |
506fb367 | 2903 | else |
2963ee1d | 2904 | outbuf = xstrprintf ("vCont;c:%x", pid); |
506fb367 | 2905 | } |
c906108c | 2906 | |
ea9c271d | 2907 | gdb_assert (outbuf && strlen (outbuf) < get_remote_packet_size ()); |
6d820c5c | 2908 | old_cleanup = make_cleanup (xfree, outbuf); |
2963ee1d DJ |
2909 | |
2910 | putpkt (outbuf); | |
506fb367 DJ |
2911 | |
2912 | do_cleanups (old_cleanup); | |
2913 | ||
2914 | return 1; | |
c906108c | 2915 | } |
43ff13b4 | 2916 | |
506fb367 DJ |
2917 | /* Tell the remote machine to resume. */ |
2918 | ||
2919 | static enum target_signal last_sent_signal = TARGET_SIGNAL_0; | |
2920 | ||
2921 | static int last_sent_step; | |
2922 | ||
43ff13b4 | 2923 | static void |
506fb367 | 2924 | remote_resume (ptid_t ptid, int step, enum target_signal siggnal) |
43ff13b4 | 2925 | { |
d01949b6 | 2926 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 2927 | char *buf; |
39f77062 | 2928 | int pid = PIDGET (ptid); |
43ff13b4 | 2929 | |
43ff13b4 JM |
2930 | last_sent_signal = siggnal; |
2931 | last_sent_step = step; | |
2932 | ||
2933 | /* A hook for when we need to do something at the last moment before | |
2934 | resumption. */ | |
9a4105ab AC |
2935 | if (deprecated_target_resume_hook) |
2936 | (*deprecated_target_resume_hook) (); | |
43ff13b4 | 2937 | |
89be2091 DJ |
2938 | /* Update the inferior on signals to silently pass, if they've changed. */ |
2939 | remote_pass_signals (); | |
2940 | ||
506fb367 DJ |
2941 | /* The vCont packet doesn't need to specify threads via Hc. */ |
2942 | if (remote_vcont_resume (ptid, step, siggnal)) | |
2943 | return; | |
2944 | ||
2945 | /* All other supported resume packets do use Hc, so call set_thread. */ | |
2946 | if (pid == -1) | |
23860348 | 2947 | set_thread (0, 0); /* Run any thread. */ |
506fb367 | 2948 | else |
23860348 | 2949 | set_thread (pid, 0); /* Run this thread. */ |
506fb367 | 2950 | |
2e9f7625 | 2951 | buf = rs->buf; |
43ff13b4 JM |
2952 | if (siggnal != TARGET_SIGNAL_0) |
2953 | { | |
2954 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 2955 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 2956 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
2957 | buf[3] = '\0'; |
2958 | } | |
2959 | else | |
c5aa993b | 2960 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 2961 | |
44eaed12 | 2962 | putpkt (buf); |
506fb367 DJ |
2963 | } |
2964 | ||
23860348 | 2965 | /* Same as remote_resume, but with async support. */ |
506fb367 DJ |
2966 | static void |
2967 | remote_async_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
2968 | { | |
2969 | remote_resume (ptid, step, siggnal); | |
43ff13b4 | 2970 | |
2acceee2 JM |
2971 | /* We are about to start executing the inferior, let's register it |
2972 | with the event loop. NOTE: this is the one place where all the | |
2973 | execution commands end up. We could alternatively do this in each | |
23860348 | 2974 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
2975 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
2976 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 2977 | NOT asynchronously. */ |
362646f5 | 2978 | if (target_can_async_p ()) |
2acceee2 | 2979 | target_async (inferior_event_handler, 0); |
23860348 | 2980 | /* Tell the world that the target is now executing. */ |
2acceee2 JM |
2981 | /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set |
2982 | this? Instead, should the client of target just assume (for | |
2983 | async targets) that the target is going to start executing? Is | |
2984 | this information already found in the continuation block? */ | |
ed9a39eb | 2985 | if (target_is_async_p ()) |
2acceee2 | 2986 | target_executing = 1; |
43ff13b4 | 2987 | } |
c906108c | 2988 | \f |
43ff13b4 JM |
2989 | |
2990 | /* Set up the signal handler for SIGINT, while the target is | |
23860348 | 2991 | executing, ovewriting the 'regular' SIGINT signal handler. */ |
43ff13b4 | 2992 | static void |
fba45db2 | 2993 | initialize_sigint_signal_handler (void) |
43ff13b4 | 2994 | { |
c5aa993b | 2995 | sigint_remote_token = |
43ff13b4 JM |
2996 | create_async_signal_handler (async_remote_interrupt, NULL); |
2997 | signal (SIGINT, handle_remote_sigint); | |
2998 | } | |
2999 | ||
23860348 | 3000 | /* Signal handler for SIGINT, while the target is executing. */ |
43ff13b4 | 3001 | static void |
fba45db2 | 3002 | handle_remote_sigint (int sig) |
43ff13b4 JM |
3003 | { |
3004 | signal (sig, handle_remote_sigint_twice); | |
c5aa993b | 3005 | sigint_remote_twice_token = |
43ff13b4 JM |
3006 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
3007 | mark_async_signal_handler_wrapper (sigint_remote_token); | |
3008 | } | |
3009 | ||
3010 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
3011 | sent once. It will take effect the second time that the user sends | |
23860348 | 3012 | a ^C. */ |
43ff13b4 | 3013 | static void |
fba45db2 | 3014 | handle_remote_sigint_twice (int sig) |
43ff13b4 JM |
3015 | { |
3016 | signal (sig, handle_sigint); | |
c5aa993b | 3017 | sigint_remote_twice_token = |
2df3850c | 3018 | create_async_signal_handler (inferior_event_handler_wrapper, NULL); |
43ff13b4 JM |
3019 | mark_async_signal_handler_wrapper (sigint_remote_twice_token); |
3020 | } | |
3021 | ||
6426a772 | 3022 | /* Perform the real interruption of the target execution, in response |
23860348 | 3023 | to a ^C. */ |
c5aa993b | 3024 | static void |
fba45db2 | 3025 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
3026 | { |
3027 | if (remote_debug) | |
3028 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
3029 | ||
3030 | target_stop (); | |
3031 | } | |
3032 | ||
3033 | /* Perform interrupt, if the first attempt did not succeed. Just give | |
23860348 | 3034 | up on the target alltogether. */ |
2df3850c | 3035 | void |
fba45db2 | 3036 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 3037 | { |
2df3850c JM |
3038 | if (remote_debug) |
3039 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt_twice called\n"); | |
6426a772 | 3040 | /* Do something only if the target was not killed by the previous |
23860348 | 3041 | cntl-C. */ |
6426a772 JM |
3042 | if (target_executing) |
3043 | { | |
3044 | interrupt_query (); | |
3045 | signal (SIGINT, handle_remote_sigint); | |
3046 | } | |
43ff13b4 JM |
3047 | } |
3048 | ||
3049 | /* Reinstall the usual SIGINT handlers, after the target has | |
23860348 | 3050 | stopped. */ |
6426a772 JM |
3051 | static void |
3052 | cleanup_sigint_signal_handler (void *dummy) | |
43ff13b4 JM |
3053 | { |
3054 | signal (SIGINT, handle_sigint); | |
3055 | if (sigint_remote_twice_token) | |
d5d6fca5 | 3056 | delete_async_signal_handler (&sigint_remote_twice_token); |
43ff13b4 | 3057 | if (sigint_remote_token) |
d5d6fca5 | 3058 | delete_async_signal_handler (&sigint_remote_token); |
43ff13b4 JM |
3059 | } |
3060 | ||
c906108c SS |
3061 | /* Send ^C to target to halt it. Target will respond, and send us a |
3062 | packet. */ | |
507f3c78 | 3063 | static void (*ofunc) (int); |
c906108c | 3064 | |
7a292a7a SS |
3065 | /* The command line interface's stop routine. This function is installed |
3066 | as a signal handler for SIGINT. The first time a user requests a | |
3067 | stop, we call remote_stop to send a break or ^C. If there is no | |
3068 | response from the target (it didn't stop when the user requested it), | |
23860348 | 3069 | we ask the user if he'd like to detach from the target. */ |
c906108c | 3070 | static void |
fba45db2 | 3071 | remote_interrupt (int signo) |
c906108c | 3072 | { |
23860348 | 3073 | /* If this doesn't work, try more severe steps. */ |
7a292a7a SS |
3074 | signal (signo, remote_interrupt_twice); |
3075 | ||
3076 | if (remote_debug) | |
0f71a2f6 | 3077 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); |
7a292a7a SS |
3078 | |
3079 | target_stop (); | |
3080 | } | |
3081 | ||
3082 | /* The user typed ^C twice. */ | |
3083 | ||
3084 | static void | |
fba45db2 | 3085 | remote_interrupt_twice (int signo) |
7a292a7a SS |
3086 | { |
3087 | signal (signo, ofunc); | |
3088 | interrupt_query (); | |
c906108c SS |
3089 | signal (signo, remote_interrupt); |
3090 | } | |
7a292a7a SS |
3091 | |
3092 | /* This is the generic stop called via the target vector. When a target | |
3093 | interrupt is requested, either by the command line or the GUI, we | |
23860348 | 3094 | will eventually end up here. */ |
c906108c | 3095 | static void |
fba45db2 | 3096 | remote_stop (void) |
c906108c | 3097 | { |
7a292a7a SS |
3098 | /* Send a break or a ^C, depending on user preference. */ |
3099 | if (remote_debug) | |
0f71a2f6 | 3100 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 3101 | |
7a292a7a | 3102 | if (remote_break) |
2cd58942 | 3103 | serial_send_break (remote_desc); |
c906108c | 3104 | else |
2cd58942 | 3105 | serial_write (remote_desc, "\003", 1); |
c906108c SS |
3106 | } |
3107 | ||
3108 | /* Ask the user what to do when an interrupt is received. */ | |
3109 | ||
3110 | static void | |
fba45db2 | 3111 | interrupt_query (void) |
c906108c SS |
3112 | { |
3113 | target_terminal_ours (); | |
3114 | ||
3115 | if (query ("Interrupted while waiting for the program.\n\ | |
3116 | Give up (and stop debugging it)? ")) | |
3117 | { | |
3118 | target_mourn_inferior (); | |
315a522e | 3119 | deprecated_throw_reason (RETURN_QUIT); |
c906108c SS |
3120 | } |
3121 | ||
3122 | target_terminal_inferior (); | |
3123 | } | |
3124 | ||
6426a772 JM |
3125 | /* Enable/disable target terminal ownership. Most targets can use |
3126 | terminal groups to control terminal ownership. Remote targets are | |
3127 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 3128 | is required. */ |
6426a772 JM |
3129 | |
3130 | static void | |
3131 | remote_async_terminal_inferior (void) | |
3132 | { | |
3133 | /* FIXME: cagney/1999-09-27: Shouldn't need to test for | |
3134 | sync_execution here. This function should only be called when | |
3135 | GDB is resuming the inferior in the forground. A background | |
3136 | resume (``run&'') should leave GDB in control of the terminal and | |
23860348 | 3137 | consequently should not call this code. */ |
6426a772 JM |
3138 | if (!sync_execution) |
3139 | return; | |
3140 | /* FIXME: cagney/1999-09-27: Closely related to the above. Make | |
3141 | calls target_terminal_*() idenpotent. The event-loop GDB talking | |
3142 | to an asynchronous target with a synchronous command calls this | |
3143 | function from both event-top.c and infrun.c/infcmd.c. Once GDB | |
3144 | stops trying to transfer the terminal to the target when it | |
3145 | shouldn't this guard can go away. */ | |
3146 | if (!remote_async_terminal_ours_p) | |
3147 | return; | |
3148 | delete_file_handler (input_fd); | |
3149 | remote_async_terminal_ours_p = 0; | |
3150 | initialize_sigint_signal_handler (); | |
3151 | /* NOTE: At this point we could also register our selves as the | |
3152 | recipient of all input. Any characters typed could then be | |
23860348 | 3153 | passed on down to the target. */ |
6426a772 JM |
3154 | } |
3155 | ||
3156 | static void | |
3157 | remote_async_terminal_ours (void) | |
3158 | { | |
23860348 | 3159 | /* See FIXME in remote_async_terminal_inferior. */ |
6426a772 JM |
3160 | if (!sync_execution) |
3161 | return; | |
23860348 | 3162 | /* See FIXME in remote_async_terminal_inferior. */ |
6426a772 JM |
3163 | if (remote_async_terminal_ours_p) |
3164 | return; | |
3165 | cleanup_sigint_signal_handler (NULL); | |
3166 | add_file_handler (input_fd, stdin_event_handler, 0); | |
3167 | remote_async_terminal_ours_p = 1; | |
3168 | } | |
3169 | ||
c906108c SS |
3170 | /* If nonzero, ignore the next kill. */ |
3171 | ||
3172 | int kill_kludge; | |
3173 | ||
3174 | void | |
917317f4 | 3175 | remote_console_output (char *msg) |
c906108c SS |
3176 | { |
3177 | char *p; | |
3178 | ||
c5aa993b | 3179 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
3180 | { |
3181 | char tb[2]; | |
3182 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3183 | tb[0] = c; | |
3184 | tb[1] = 0; | |
43ff13b4 | 3185 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 3186 | } |
917317f4 | 3187 | gdb_flush (gdb_stdtarg); |
c906108c SS |
3188 | } |
3189 | ||
0f71a2f6 JM |
3190 | /* Wait until the remote machine stops, then return, |
3191 | storing status in STATUS just as `wait' would. | |
802188a7 | 3192 | Returns "pid", which in the case of a multi-threaded |
0f71a2f6 | 3193 | remote OS, is the thread-id. */ |
c906108c | 3194 | |
39f77062 KB |
3195 | static ptid_t |
3196 | remote_wait (ptid_t ptid, struct target_waitstatus *status) | |
c906108c | 3197 | { |
d01949b6 | 3198 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 3199 | struct remote_arch_state *rsa = get_remote_arch_state (); |
b2dd6311 | 3200 | ULONGEST thread_num = -1; |
3c3bea1c | 3201 | ULONGEST addr; |
cfa9d6d9 | 3202 | int solibs_changed = 0; |
c906108c SS |
3203 | |
3204 | status->kind = TARGET_WAITKIND_EXITED; | |
3205 | status->value.integer = 0; | |
3206 | ||
3207 | while (1) | |
3208 | { | |
2e9f7625 | 3209 | char *buf, *p; |
c906108c | 3210 | |
c906108c | 3211 | ofunc = signal (SIGINT, remote_interrupt); |
6d820c5c | 3212 | getpkt (&rs->buf, &rs->buf_size, 1); |
c906108c SS |
3213 | signal (SIGINT, ofunc); |
3214 | ||
2e9f7625 DJ |
3215 | buf = rs->buf; |
3216 | ||
c906108c | 3217 | /* This is a hook for when we need to do something (perhaps the |
c5aa993b | 3218 | collection of trace data) every time the target stops. */ |
9a4105ab AC |
3219 | if (deprecated_target_wait_loop_hook) |
3220 | (*deprecated_target_wait_loop_hook) (); | |
c906108c | 3221 | |
3c3bea1c GS |
3222 | remote_stopped_by_watchpoint_p = 0; |
3223 | ||
c906108c SS |
3224 | switch (buf[0]) |
3225 | { | |
23860348 | 3226 | case 'E': /* Error of some sort. */ |
8a3fe4f8 | 3227 | warning (_("Remote failure reply: %s"), buf); |
c906108c | 3228 | continue; |
23860348 | 3229 | case 'F': /* File-I/O request. */ |
449092f6 CV |
3230 | remote_fileio_request (buf); |
3231 | continue; | |
23860348 | 3232 | case 'T': /* Status with PC, SP, FP, ... */ |
c906108c | 3233 | { |
cfd77fa1 | 3234 | gdb_byte regs[MAX_REGISTER_SIZE]; |
c906108c | 3235 | |
23860348 | 3236 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
c906108c | 3237 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where |
c5aa993b JM |
3238 | ss = signal number |
3239 | n... = register number | |
3240 | r... = register contents | |
3241 | */ | |
c906108c SS |
3242 | p = &buf[3]; /* after Txx */ |
3243 | ||
3244 | while (*p) | |
3245 | { | |
cfd77fa1 | 3246 | char *p1; |
c906108c | 3247 | char *p_temp; |
97345198 | 3248 | int fieldsize; |
3c3bea1c GS |
3249 | LONGEST pnum = 0; |
3250 | ||
23860348 MS |
3251 | /* If the packet contains a register number save it in |
3252 | pnum and set p1 to point to the character following | |
3253 | it. Otherwise p1 points to p. */ | |
c906108c | 3254 | |
23860348 MS |
3255 | /* If this packet is an awatch packet, don't parse the |
3256 | 'a' as a register number. */ | |
3c3bea1c GS |
3257 | |
3258 | if (strncmp (p, "awatch", strlen("awatch")) != 0) | |
3259 | { | |
3260 | /* Read the ``P'' register number. */ | |
3261 | pnum = strtol (p, &p_temp, 16); | |
cfd77fa1 | 3262 | p1 = p_temp; |
3c3bea1c | 3263 | } |
802188a7 | 3264 | else |
3c3bea1c | 3265 | p1 = p; |
c906108c | 3266 | |
23860348 | 3267 | if (p1 == p) /* No register number present here. */ |
c906108c | 3268 | { |
cfd77fa1 | 3269 | p1 = strchr (p, ':'); |
c906108c | 3270 | if (p1 == NULL) |
670aa98f | 3271 | error (_("Malformed packet(a) (missing colon): %s\n\ |
8a3fe4f8 | 3272 | Packet: '%s'\n"), |
670aa98f | 3273 | p, buf); |
3c3bea1c | 3274 | if (strncmp (p, "thread", p1 - p) == 0) |
c906108c SS |
3275 | { |
3276 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
3277 | record_currthread (thread_num); | |
cfd77fa1 | 3278 | p = p_temp; |
c906108c | 3279 | } |
3c3bea1c GS |
3280 | else if ((strncmp (p, "watch", p1 - p) == 0) |
3281 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
3282 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
3283 | { | |
3284 | remote_stopped_by_watchpoint_p = 1; | |
3285 | p = unpack_varlen_hex (++p1, &addr); | |
3286 | remote_watch_data_address = (CORE_ADDR)addr; | |
3287 | } | |
cfa9d6d9 DJ |
3288 | else if (strncmp (p, "library", p1 - p) == 0) |
3289 | { | |
3290 | p1++; | |
3291 | p_temp = p1; | |
3292 | while (*p_temp && *p_temp != ';') | |
3293 | p_temp++; | |
3294 | ||
3295 | solibs_changed = 1; | |
3296 | p = p_temp; | |
3297 | } | |
3c3bea1c GS |
3298 | else |
3299 | { | |
3300 | /* Silently skip unknown optional info. */ | |
3301 | p_temp = strchr (p1 + 1, ';'); | |
3302 | if (p_temp) | |
cfd77fa1 | 3303 | p = p_temp; |
3c3bea1c | 3304 | } |
c906108c SS |
3305 | } |
3306 | else | |
3307 | { | |
ea9c271d | 3308 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); |
c906108c SS |
3309 | p = p1; |
3310 | ||
3311 | if (*p++ != ':') | |
8a3fe4f8 AC |
3312 | error (_("Malformed packet(b) (missing colon): %s\n\ |
3313 | Packet: '%s'\n"), | |
3fcb8548 | 3314 | p, buf); |
c906108c | 3315 | |
ad10f812 | 3316 | if (reg == NULL) |
8a3fe4f8 AC |
3317 | error (_("Remote sent bad register number %s: %s\n\ |
3318 | Packet: '%s'\n"), | |
3fcb8548 | 3319 | phex_nz (pnum, 0), p, buf); |
c906108c | 3320 | |
cfd77fa1 | 3321 | fieldsize = hex2bin (p, regs, |
2bc416ba | 3322 | register_size (current_gdbarch, |
23860348 | 3323 | reg->regnum)); |
97345198 | 3324 | p += 2 * fieldsize; |
2bc416ba | 3325 | if (fieldsize < register_size (current_gdbarch, |
23860348 | 3326 | reg->regnum)) |
8a3fe4f8 | 3327 | warning (_("Remote reply is too short: %s"), buf); |
594f7785 | 3328 | regcache_raw_supply (get_current_regcache (), |
23860348 | 3329 | reg->regnum, regs); |
c906108c SS |
3330 | } |
3331 | ||
3332 | if (*p++ != ';') | |
2bc416ba | 3333 | error (_("Remote register badly formatted: %s\nhere: %s"), |
23860348 | 3334 | buf, p); |
c906108c SS |
3335 | } |
3336 | } | |
3337 | /* fall through */ | |
23860348 | 3338 | case 'S': /* Old style status, just signal only. */ |
cfa9d6d9 DJ |
3339 | if (solibs_changed) |
3340 | status->kind = TARGET_WAITKIND_LOADED; | |
3341 | else | |
3342 | { | |
3343 | status->kind = TARGET_WAITKIND_STOPPED; | |
3344 | status->value.sig = (enum target_signal) | |
3345 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3346 | } | |
c906108c | 3347 | |
0f71a2f6 JM |
3348 | if (buf[3] == 'p') |
3349 | { | |
0f71a2f6 JM |
3350 | thread_num = strtol ((const char *) &buf[4], NULL, 16); |
3351 | record_currthread (thread_num); | |
3352 | } | |
c906108c | 3353 | goto got_status; |
23860348 | 3354 | case 'W': /* Target exited. */ |
c906108c SS |
3355 | { |
3356 | /* The remote process exited. */ | |
3357 | status->kind = TARGET_WAITKIND_EXITED; | |
3358 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
3359 | goto got_status; | |
3360 | } | |
3361 | case 'X': | |
3362 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
3363 | status->value.sig = (enum target_signal) | |
3364 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3365 | kill_kludge = 1; | |
3366 | ||
3367 | goto got_status; | |
23860348 | 3368 | case 'O': /* Console output. */ |
c906108c SS |
3369 | remote_console_output (buf + 1); |
3370 | continue; | |
3371 | case '\0': | |
3372 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3373 | { | |
3374 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3375 | the remote system doesn't support it. */ |
c906108c SS |
3376 | target_terminal_ours_for_output (); |
3377 | printf_filtered | |
3378 | ("Can't send signals to this remote system. %s not sent.\n", | |
3379 | target_signal_to_name (last_sent_signal)); | |
3380 | last_sent_signal = TARGET_SIGNAL_0; | |
3381 | target_terminal_inferior (); | |
3382 | ||
3383 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3384 | putpkt ((char *) buf); | |
3385 | continue; | |
3386 | } | |
3387 | /* else fallthrough */ | |
3388 | default: | |
8a3fe4f8 | 3389 | warning (_("Invalid remote reply: %s"), buf); |
c906108c SS |
3390 | continue; |
3391 | } | |
3392 | } | |
c5aa993b | 3393 | got_status: |
c906108c SS |
3394 | if (thread_num != -1) |
3395 | { | |
39f77062 | 3396 | return pid_to_ptid (thread_num); |
c906108c | 3397 | } |
39f77062 | 3398 | return inferior_ptid; |
c906108c SS |
3399 | } |
3400 | ||
23860348 | 3401 | /* Async version of remote_wait. */ |
39f77062 KB |
3402 | static ptid_t |
3403 | remote_async_wait (ptid_t ptid, struct target_waitstatus *status) | |
43ff13b4 | 3404 | { |
d01949b6 | 3405 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 3406 | struct remote_arch_state *rsa = get_remote_arch_state (); |
b2dd6311 | 3407 | ULONGEST thread_num = -1; |
3c3bea1c | 3408 | ULONGEST addr; |
cfa9d6d9 | 3409 | int solibs_changed = 0; |
43ff13b4 JM |
3410 | |
3411 | status->kind = TARGET_WAITKIND_EXITED; | |
3412 | status->value.integer = 0; | |
3413 | ||
3c3bea1c GS |
3414 | remote_stopped_by_watchpoint_p = 0; |
3415 | ||
43ff13b4 JM |
3416 | while (1) |
3417 | { | |
2e9f7625 | 3418 | char *buf, *p; |
c5aa993b | 3419 | |
ed9a39eb | 3420 | if (!target_is_async_p ()) |
43ff13b4 | 3421 | ofunc = signal (SIGINT, remote_interrupt); |
6426a772 JM |
3422 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
3423 | _never_ wait for ever -> test on target_is_async_p(). | |
3424 | However, before we do that we need to ensure that the caller | |
23860348 | 3425 | knows how to take the target into/out of async mode. */ |
6d820c5c | 3426 | getpkt (&rs->buf, &rs->buf_size, wait_forever_enabled_p); |
ed9a39eb | 3427 | if (!target_is_async_p ()) |
43ff13b4 JM |
3428 | signal (SIGINT, ofunc); |
3429 | ||
2e9f7625 DJ |
3430 | buf = rs->buf; |
3431 | ||
43ff13b4 | 3432 | /* This is a hook for when we need to do something (perhaps the |
c5aa993b | 3433 | collection of trace data) every time the target stops. */ |
9a4105ab AC |
3434 | if (deprecated_target_wait_loop_hook) |
3435 | (*deprecated_target_wait_loop_hook) (); | |
43ff13b4 JM |
3436 | |
3437 | switch (buf[0]) | |
3438 | { | |
23860348 | 3439 | case 'E': /* Error of some sort. */ |
8a3fe4f8 | 3440 | warning (_("Remote failure reply: %s"), buf); |
43ff13b4 | 3441 | continue; |
23860348 | 3442 | case 'F': /* File-I/O request. */ |
449092f6 CV |
3443 | remote_fileio_request (buf); |
3444 | continue; | |
23860348 | 3445 | case 'T': /* Status with PC, SP, FP, ... */ |
43ff13b4 | 3446 | { |
cfd77fa1 | 3447 | gdb_byte regs[MAX_REGISTER_SIZE]; |
43ff13b4 | 3448 | |
23860348 | 3449 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
43ff13b4 | 3450 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where |
c5aa993b JM |
3451 | ss = signal number |
3452 | n... = register number | |
3453 | r... = register contents | |
3454 | */ | |
43ff13b4 JM |
3455 | p = &buf[3]; /* after Txx */ |
3456 | ||
3457 | while (*p) | |
3458 | { | |
cfd77fa1 | 3459 | char *p1; |
43ff13b4 | 3460 | char *p_temp; |
6c3f2dbf | 3461 | int fieldsize; |
3c3bea1c | 3462 | long pnum = 0; |
43ff13b4 | 3463 | |
23860348 MS |
3464 | /* If the packet contains a register number, save it |
3465 | in pnum and set p1 to point to the character | |
3466 | following it. Otherwise p1 points to p. */ | |
3c3bea1c GS |
3467 | |
3468 | /* If this packet is an awatch packet, don't parse the 'a' | |
3469 | as a register number. */ | |
802188a7 | 3470 | |
cfa9d6d9 | 3471 | if (strncmp (p, "awatch", strlen("awatch")) != 0) |
3c3bea1c GS |
3472 | { |
3473 | /* Read the register number. */ | |
3474 | pnum = strtol (p, &p_temp, 16); | |
cfd77fa1 | 3475 | p1 = p_temp; |
3c3bea1c | 3476 | } |
802188a7 | 3477 | else |
3c3bea1c | 3478 | p1 = p; |
43ff13b4 | 3479 | |
23860348 | 3480 | if (p1 == p) /* No register number present here. */ |
43ff13b4 | 3481 | { |
cfd77fa1 | 3482 | p1 = strchr (p, ':'); |
43ff13b4 | 3483 | if (p1 == NULL) |
8a3fe4f8 AC |
3484 | error (_("Malformed packet(a) (missing colon): %s\n\ |
3485 | Packet: '%s'\n"), | |
3fcb8548 | 3486 | p, buf); |
3c3bea1c | 3487 | if (strncmp (p, "thread", p1 - p) == 0) |
43ff13b4 JM |
3488 | { |
3489 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
3490 | record_currthread (thread_num); | |
cfd77fa1 | 3491 | p = p_temp; |
43ff13b4 | 3492 | } |
3c3bea1c GS |
3493 | else if ((strncmp (p, "watch", p1 - p) == 0) |
3494 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
3495 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
3496 | { | |
3497 | remote_stopped_by_watchpoint_p = 1; | |
3498 | p = unpack_varlen_hex (++p1, &addr); | |
3499 | remote_watch_data_address = (CORE_ADDR)addr; | |
3500 | } | |
cfa9d6d9 DJ |
3501 | else if (strncmp (p, "library", p1 - p) == 0) |
3502 | { | |
3503 | p1++; | |
3504 | p_temp = p1; | |
3505 | while (*p_temp && *p_temp != ';') | |
3506 | p_temp++; | |
3507 | ||
3508 | solibs_changed = 1; | |
3509 | p = p_temp; | |
3510 | } | |
3c3bea1c GS |
3511 | else |
3512 | { | |
3513 | /* Silently skip unknown optional info. */ | |
cfd77fa1 | 3514 | p_temp = strchr (p1 + 1, ';'); |
3c3bea1c GS |
3515 | if (p_temp) |
3516 | p = p_temp; | |
3517 | } | |
43ff13b4 | 3518 | } |
802188a7 | 3519 | |
43ff13b4 JM |
3520 | else |
3521 | { | |
ea9c271d | 3522 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); |
43ff13b4 | 3523 | p = p1; |
43ff13b4 | 3524 | if (*p++ != ':') |
8a3fe4f8 AC |
3525 | error (_("Malformed packet(b) (missing colon): %s\n\ |
3526 | Packet: '%s'\n"), | |
3fcb8548 | 3527 | p, buf); |
43ff13b4 | 3528 | |
ad10f812 | 3529 | if (reg == NULL) |
8a3fe4f8 AC |
3530 | error (_("Remote sent bad register number %ld: %s\n\ |
3531 | Packet: '%s'\n"), | |
3fcb8548 | 3532 | pnum, p, buf); |
43ff13b4 | 3533 | |
cfd77fa1 | 3534 | fieldsize = hex2bin (p, regs, |
2bc416ba | 3535 | register_size (current_gdbarch, |
23860348 | 3536 | reg->regnum)); |
6c3f2dbf | 3537 | p += 2 * fieldsize; |
2bc416ba | 3538 | if (fieldsize < register_size (current_gdbarch, |
23860348 | 3539 | reg->regnum)) |
8a3fe4f8 | 3540 | warning (_("Remote reply is too short: %s"), buf); |
594f7785 UW |
3541 | regcache_raw_supply (get_current_regcache (), |
3542 | reg->regnum, regs); | |
43ff13b4 JM |
3543 | } |
3544 | ||
3545 | if (*p++ != ';') | |
8a3fe4f8 | 3546 | error (_("Remote register badly formatted: %s\nhere: %s"), |
0a2cfde4 | 3547 | buf, p); |
43ff13b4 JM |
3548 | } |
3549 | } | |
3550 | /* fall through */ | |
23860348 | 3551 | case 'S': /* Old style status, just signal only. */ |
cfa9d6d9 DJ |
3552 | if (solibs_changed) |
3553 | status->kind = TARGET_WAITKIND_LOADED; | |
3554 | else | |
3555 | { | |
3556 | status->kind = TARGET_WAITKIND_STOPPED; | |
3557 | status->value.sig = (enum target_signal) | |
3558 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3559 | } | |
43ff13b4 JM |
3560 | |
3561 | if (buf[3] == 'p') | |
3562 | { | |
43ff13b4 JM |
3563 | thread_num = strtol ((const char *) &buf[4], NULL, 16); |
3564 | record_currthread (thread_num); | |
3565 | } | |
43ff13b4 | 3566 | goto got_status; |
23860348 | 3567 | case 'W': /* Target exited. */ |
43ff13b4 JM |
3568 | { |
3569 | /* The remote process exited. */ | |
3570 | status->kind = TARGET_WAITKIND_EXITED; | |
3571 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
3572 | goto got_status; | |
3573 | } | |
3574 | case 'X': | |
3575 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
3576 | status->value.sig = (enum target_signal) | |
3577 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3578 | kill_kludge = 1; | |
3579 | ||
3580 | goto got_status; | |
23860348 | 3581 | case 'O': /* Console output. */ |
43ff13b4 | 3582 | remote_console_output (buf + 1); |
c4093a6a | 3583 | /* Return immediately to the event loop. The event loop will |
23860348 | 3584 | still be waiting on the inferior afterwards. */ |
c4093a6a JM |
3585 | status->kind = TARGET_WAITKIND_IGNORE; |
3586 | goto got_status; | |
43ff13b4 JM |
3587 | case '\0': |
3588 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3589 | { | |
3590 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3591 | the remote system doesn't support it. */ |
43ff13b4 JM |
3592 | target_terminal_ours_for_output (); |
3593 | printf_filtered | |
3594 | ("Can't send signals to this remote system. %s not sent.\n", | |
3595 | target_signal_to_name (last_sent_signal)); | |
3596 | last_sent_signal = TARGET_SIGNAL_0; | |
3597 | target_terminal_inferior (); | |
3598 | ||
3599 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3600 | putpkt ((char *) buf); | |
3601 | continue; | |
3602 | } | |
3603 | /* else fallthrough */ | |
3604 | default: | |
8a3fe4f8 | 3605 | warning (_("Invalid remote reply: %s"), buf); |
43ff13b4 JM |
3606 | continue; |
3607 | } | |
3608 | } | |
c5aa993b | 3609 | got_status: |
43ff13b4 JM |
3610 | if (thread_num != -1) |
3611 | { | |
39f77062 | 3612 | return pid_to_ptid (thread_num); |
43ff13b4 | 3613 | } |
39f77062 | 3614 | return inferior_ptid; |
43ff13b4 JM |
3615 | } |
3616 | ||
74ca34ce | 3617 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 3618 | |
b96ec7ac | 3619 | static int |
56be3814 | 3620 | fetch_register_using_p (struct regcache *regcache, struct packet_reg *reg) |
b96ec7ac AC |
3621 | { |
3622 | struct remote_state *rs = get_remote_state (); | |
2e9f7625 | 3623 | char *buf, *p; |
b96ec7ac AC |
3624 | char regp[MAX_REGISTER_SIZE]; |
3625 | int i; | |
3626 | ||
74ca34ce DJ |
3627 | if (remote_protocol_packets[PACKET_p].support == PACKET_DISABLE) |
3628 | return 0; | |
3629 | ||
3630 | if (reg->pnum == -1) | |
3631 | return 0; | |
3632 | ||
2e9f7625 | 3633 | p = rs->buf; |
fcad0fa4 | 3634 | *p++ = 'p'; |
74ca34ce | 3635 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 3636 | *p++ = '\0'; |
6d820c5c | 3637 | remote_send (&rs->buf, &rs->buf_size); |
3f9a994c | 3638 | |
2e9f7625 DJ |
3639 | buf = rs->buf; |
3640 | ||
74ca34ce DJ |
3641 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_p])) |
3642 | { | |
3643 | case PACKET_OK: | |
3644 | break; | |
3645 | case PACKET_UNKNOWN: | |
3646 | return 0; | |
3647 | case PACKET_ERROR: | |
3648 | error (_("Could not fetch register \"%s\""), | |
4a22f64d | 3649 | gdbarch_register_name (get_regcache_arch (regcache), reg->regnum)); |
74ca34ce | 3650 | } |
3f9a994c JB |
3651 | |
3652 | /* If this register is unfetchable, tell the regcache. */ | |
3653 | if (buf[0] == 'x') | |
8480adf2 | 3654 | { |
56be3814 | 3655 | regcache_raw_supply (regcache, reg->regnum, NULL); |
8480adf2 | 3656 | return 1; |
b96ec7ac | 3657 | } |
b96ec7ac | 3658 | |
3f9a994c JB |
3659 | /* Otherwise, parse and supply the value. */ |
3660 | p = buf; | |
3661 | i = 0; | |
3662 | while (p[0] != 0) | |
3663 | { | |
3664 | if (p[1] == 0) | |
74ca34ce | 3665 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
3666 | |
3667 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3668 | p += 2; | |
3669 | } | |
56be3814 | 3670 | regcache_raw_supply (regcache, reg->regnum, regp); |
3f9a994c | 3671 | return 1; |
b96ec7ac AC |
3672 | } |
3673 | ||
74ca34ce DJ |
3674 | /* Fetch the registers included in the target's 'g' packet. */ |
3675 | ||
29709017 DJ |
3676 | static int |
3677 | send_g_packet (void) | |
c906108c | 3678 | { |
d01949b6 | 3679 | struct remote_state *rs = get_remote_state (); |
74ca34ce | 3680 | int i, buf_len; |
c906108c | 3681 | char *p; |
74ca34ce | 3682 | char *regs; |
c906108c | 3683 | |
74ca34ce DJ |
3684 | sprintf (rs->buf, "g"); |
3685 | remote_send (&rs->buf, &rs->buf_size); | |
c906108c | 3686 | |
29709017 DJ |
3687 | /* We can get out of synch in various cases. If the first character |
3688 | in the buffer is not a hex character, assume that has happened | |
3689 | and try to fetch another packet to read. */ | |
3690 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
3691 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
3692 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
3693 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
3694 | { | |
3695 | if (remote_debug) | |
3696 | fprintf_unfiltered (gdb_stdlog, | |
3697 | "Bad register packet; fetching a new packet\n"); | |
3698 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3699 | } | |
3700 | ||
74ca34ce DJ |
3701 | buf_len = strlen (rs->buf); |
3702 | ||
3703 | /* Sanity check the received packet. */ | |
3704 | if (buf_len % 2 != 0) | |
3705 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf); | |
29709017 DJ |
3706 | |
3707 | return buf_len / 2; | |
3708 | } | |
3709 | ||
3710 | static void | |
56be3814 | 3711 | process_g_packet (struct regcache *regcache) |
29709017 | 3712 | { |
4a22f64d | 3713 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
29709017 DJ |
3714 | struct remote_state *rs = get_remote_state (); |
3715 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
3716 | int i, buf_len; | |
3717 | char *p; | |
3718 | char *regs; | |
3719 | ||
3720 | buf_len = strlen (rs->buf); | |
3721 | ||
3722 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce DJ |
3723 | if (buf_len > 2 * rsa->sizeof_g_packet) |
3724 | error (_("Remote 'g' packet reply is too long: %s"), rs->buf); | |
3725 | ||
3726 | /* Save the size of the packet sent to us by the target. It is used | |
3727 | as a heuristic when determining the max size of packets that the | |
3728 | target can safely receive. */ | |
3729 | if (rsa->actual_register_packet_size == 0) | |
3730 | rsa->actual_register_packet_size = buf_len; | |
3731 | ||
3732 | /* If this is smaller than we guessed the 'g' packet would be, | |
3733 | update our records. A 'g' reply that doesn't include a register's | |
3734 | value implies either that the register is not available, or that | |
3735 | the 'p' packet must be used. */ | |
3736 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 3737 | { |
74ca34ce DJ |
3738 | rsa->sizeof_g_packet = buf_len / 2; |
3739 | ||
4a22f64d | 3740 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 3741 | { |
74ca34ce DJ |
3742 | if (rsa->regs[i].pnum == -1) |
3743 | continue; | |
3744 | ||
3745 | if (rsa->regs[i].offset >= rsa->sizeof_g_packet) | |
3746 | rsa->regs[i].in_g_packet = 0; | |
b96ec7ac | 3747 | else |
74ca34ce | 3748 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 3749 | } |
74ca34ce | 3750 | } |
b323314b | 3751 | |
74ca34ce | 3752 | regs = alloca (rsa->sizeof_g_packet); |
c906108c SS |
3753 | |
3754 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 3755 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 3756 | |
c906108c SS |
3757 | /* Reply describes registers byte by byte, each byte encoded as two |
3758 | hex characters. Suck them all up, then supply them to the | |
3759 | register cacheing/storage mechanism. */ | |
3760 | ||
74ca34ce | 3761 | p = rs->buf; |
ea9c271d | 3762 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 3763 | { |
74ca34ce DJ |
3764 | if (p[0] == 0 || p[1] == 0) |
3765 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
3766 | internal_error (__FILE__, __LINE__, | |
3767 | "unexpected end of 'g' packet reply"); | |
3768 | ||
c906108c | 3769 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 3770 | regs[i] = 0; /* 'x' */ |
c906108c SS |
3771 | else |
3772 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3773 | p += 2; | |
3774 | } | |
3775 | ||
ad10f812 | 3776 | { |
b323314b | 3777 | int i; |
4a22f64d | 3778 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
ad10f812 | 3779 | { |
ea9c271d | 3780 | struct packet_reg *r = &rsa->regs[i]; |
b323314b AC |
3781 | if (r->in_g_packet) |
3782 | { | |
74ca34ce DJ |
3783 | if (r->offset * 2 >= strlen (rs->buf)) |
3784 | /* This shouldn't happen - we adjusted in_g_packet above. */ | |
3785 | internal_error (__FILE__, __LINE__, | |
3786 | "unexpected end of 'g' packet reply"); | |
3787 | else if (rs->buf[r->offset * 2] == 'x') | |
8ccc1287 | 3788 | { |
74ca34ce | 3789 | gdb_assert (r->offset * 2 < strlen (rs->buf)); |
8ccc1287 AC |
3790 | /* The register isn't available, mark it as such (at |
3791 | the same time setting the value to zero). */ | |
56be3814 | 3792 | regcache_raw_supply (regcache, r->regnum, NULL); |
8ccc1287 AC |
3793 | } |
3794 | else | |
56be3814 | 3795 | regcache_raw_supply (regcache, r->regnum, |
8ccc1287 | 3796 | regs + r->offset); |
b323314b | 3797 | } |
ad10f812 AC |
3798 | } |
3799 | } | |
c906108c SS |
3800 | } |
3801 | ||
29709017 | 3802 | static void |
56be3814 | 3803 | fetch_registers_using_g (struct regcache *regcache) |
29709017 DJ |
3804 | { |
3805 | send_g_packet (); | |
56be3814 | 3806 | process_g_packet (regcache); |
29709017 DJ |
3807 | } |
3808 | ||
74ca34ce | 3809 | static void |
56be3814 | 3810 | remote_fetch_registers (struct regcache *regcache, int regnum) |
74ca34ce DJ |
3811 | { |
3812 | struct remote_state *rs = get_remote_state (); | |
3813 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
3814 | int i; | |
3815 | ||
3816 | set_thread (PIDGET (inferior_ptid), 1); | |
3817 | ||
3818 | if (regnum >= 0) | |
3819 | { | |
3820 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
3821 | gdb_assert (reg != NULL); | |
3822 | ||
3823 | /* If this register might be in the 'g' packet, try that first - | |
3824 | we are likely to read more than one register. If this is the | |
3825 | first 'g' packet, we might be overly optimistic about its | |
3826 | contents, so fall back to 'p'. */ | |
3827 | if (reg->in_g_packet) | |
3828 | { | |
56be3814 | 3829 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
3830 | if (reg->in_g_packet) |
3831 | return; | |
3832 | } | |
3833 | ||
56be3814 | 3834 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
3835 | return; |
3836 | ||
3837 | /* This register is not available. */ | |
56be3814 | 3838 | regcache_raw_supply (regcache, reg->regnum, NULL); |
74ca34ce DJ |
3839 | |
3840 | return; | |
3841 | } | |
3842 | ||
56be3814 | 3843 | fetch_registers_using_g (regcache); |
74ca34ce | 3844 | |
4a22f64d | 3845 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 3846 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 3847 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
3848 | { |
3849 | /* This register is not available. */ | |
56be3814 | 3850 | regcache_raw_supply (regcache, i, NULL); |
74ca34ce DJ |
3851 | } |
3852 | } | |
3853 | ||
c906108c SS |
3854 | /* Prepare to store registers. Since we may send them all (using a |
3855 | 'G' request), we have to read out the ones we don't want to change | |
3856 | first. */ | |
3857 | ||
c5aa993b | 3858 | static void |
316f2060 | 3859 | remote_prepare_to_store (struct regcache *regcache) |
c906108c | 3860 | { |
ea9c271d | 3861 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cf0e1e0d | 3862 | int i; |
cfd77fa1 | 3863 | gdb_byte buf[MAX_REGISTER_SIZE]; |
cf0e1e0d | 3864 | |
c906108c | 3865 | /* Make sure the entire registers array is valid. */ |
444abaca | 3866 | switch (remote_protocol_packets[PACKET_P].support) |
5a2468f5 JM |
3867 | { |
3868 | case PACKET_DISABLE: | |
3869 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 3870 | /* Make sure all the necessary registers are cached. */ |
4a22f64d | 3871 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
ea9c271d | 3872 | if (rsa->regs[i].in_g_packet) |
316f2060 | 3873 | regcache_raw_read (regcache, rsa->regs[i].regnum, buf); |
5a2468f5 JM |
3874 | break; |
3875 | case PACKET_ENABLE: | |
3876 | break; | |
3877 | } | |
3878 | } | |
3879 | ||
ad10f812 | 3880 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 3881 | packet was not recognized. */ |
5a2468f5 JM |
3882 | |
3883 | static int | |
56be3814 | 3884 | store_register_using_P (const struct regcache *regcache, struct packet_reg *reg) |
5a2468f5 | 3885 | { |
4a22f64d | 3886 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
d01949b6 | 3887 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 3888 | struct remote_arch_state *rsa = get_remote_arch_state (); |
5a2468f5 | 3889 | /* Try storing a single register. */ |
6d820c5c | 3890 | char *buf = rs->buf; |
cfd77fa1 | 3891 | gdb_byte regp[MAX_REGISTER_SIZE]; |
5a2468f5 | 3892 | char *p; |
5a2468f5 | 3893 | |
74ca34ce DJ |
3894 | if (remote_protocol_packets[PACKET_P].support == PACKET_DISABLE) |
3895 | return 0; | |
3896 | ||
3897 | if (reg->pnum == -1) | |
3898 | return 0; | |
3899 | ||
ea9c271d | 3900 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 3901 | p = buf + strlen (buf); |
56be3814 | 3902 | regcache_raw_collect (regcache, reg->regnum, regp); |
4a22f64d | 3903 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
6d820c5c | 3904 | remote_send (&rs->buf, &rs->buf_size); |
5a2468f5 | 3905 | |
74ca34ce DJ |
3906 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
3907 | { | |
3908 | case PACKET_OK: | |
3909 | return 1; | |
3910 | case PACKET_ERROR: | |
3911 | error (_("Could not write register \"%s\""), | |
4a22f64d | 3912 | gdbarch_register_name (gdbarch, reg->regnum)); |
74ca34ce DJ |
3913 | case PACKET_UNKNOWN: |
3914 | return 0; | |
3915 | default: | |
3916 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
3917 | } | |
c906108c SS |
3918 | } |
3919 | ||
23860348 MS |
3920 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
3921 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
3922 | |
3923 | static void | |
56be3814 | 3924 | store_registers_using_G (const struct regcache *regcache) |
c906108c | 3925 | { |
d01949b6 | 3926 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 3927 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cfd77fa1 | 3928 | gdb_byte *regs; |
c906108c SS |
3929 | char *p; |
3930 | ||
193cb69f AC |
3931 | /* Extract all the registers in the regcache copying them into a |
3932 | local buffer. */ | |
3933 | { | |
b323314b | 3934 | int i; |
ea9c271d DJ |
3935 | regs = alloca (rsa->sizeof_g_packet); |
3936 | memset (regs, 0, rsa->sizeof_g_packet); | |
4a22f64d | 3937 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
193cb69f | 3938 | { |
ea9c271d | 3939 | struct packet_reg *r = &rsa->regs[i]; |
b323314b | 3940 | if (r->in_g_packet) |
56be3814 | 3941 | regcache_raw_collect (regcache, r->regnum, regs + r->offset); |
193cb69f AC |
3942 | } |
3943 | } | |
c906108c SS |
3944 | |
3945 | /* Command describes registers byte by byte, | |
3946 | each byte encoded as two hex characters. */ | |
6d820c5c | 3947 | p = rs->buf; |
193cb69f | 3948 | *p++ = 'G'; |
74ca34ce DJ |
3949 | /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets |
3950 | updated. */ | |
3951 | bin2hex (regs, p, rsa->sizeof_g_packet); | |
6d820c5c | 3952 | remote_send (&rs->buf, &rs->buf_size); |
c906108c | 3953 | } |
74ca34ce DJ |
3954 | |
3955 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
3956 | of the register cache buffer. FIXME: ignores errors. */ | |
3957 | ||
3958 | static void | |
56be3814 | 3959 | remote_store_registers (struct regcache *regcache, int regnum) |
74ca34ce DJ |
3960 | { |
3961 | struct remote_state *rs = get_remote_state (); | |
3962 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
3963 | int i; | |
3964 | ||
3965 | set_thread (PIDGET (inferior_ptid), 1); | |
3966 | ||
3967 | if (regnum >= 0) | |
3968 | { | |
3969 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
3970 | gdb_assert (reg != NULL); | |
3971 | ||
3972 | /* Always prefer to store registers using the 'P' packet if | |
3973 | possible; we often change only a small number of registers. | |
3974 | Sometimes we change a larger number; we'd need help from a | |
3975 | higher layer to know to use 'G'. */ | |
56be3814 | 3976 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
3977 | return; |
3978 | ||
3979 | /* For now, don't complain if we have no way to write the | |
3980 | register. GDB loses track of unavailable registers too | |
3981 | easily. Some day, this may be an error. We don't have | |
3982 | any way to read the register, either... */ | |
3983 | if (!reg->in_g_packet) | |
3984 | return; | |
3985 | ||
56be3814 | 3986 | store_registers_using_G (regcache); |
74ca34ce DJ |
3987 | return; |
3988 | } | |
3989 | ||
56be3814 | 3990 | store_registers_using_G (regcache); |
74ca34ce | 3991 | |
4a22f64d | 3992 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 3993 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 3994 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
3995 | /* See above for why we do not issue an error here. */ |
3996 | continue; | |
3997 | } | |
c906108c SS |
3998 | \f |
3999 | ||
4000 | /* Return the number of hex digits in num. */ | |
4001 | ||
4002 | static int | |
fba45db2 | 4003 | hexnumlen (ULONGEST num) |
c906108c SS |
4004 | { |
4005 | int i; | |
4006 | ||
4007 | for (i = 0; num != 0; i++) | |
4008 | num >>= 4; | |
4009 | ||
4010 | return max (i, 1); | |
4011 | } | |
4012 | ||
2df3850c | 4013 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
4014 | |
4015 | static int | |
fba45db2 | 4016 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 4017 | { |
c906108c | 4018 | int len = hexnumlen (num); |
2df3850c JM |
4019 | return hexnumnstr (buf, num, len); |
4020 | } | |
4021 | ||
c906108c | 4022 | |
2df3850c | 4023 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 4024 | |
2df3850c | 4025 | static int |
fba45db2 | 4026 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
4027 | { |
4028 | int i; | |
4029 | ||
4030 | buf[width] = '\0'; | |
4031 | ||
4032 | for (i = width - 1; i >= 0; i--) | |
c906108c | 4033 | { |
c5aa993b | 4034 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
4035 | num >>= 4; |
4036 | } | |
4037 | ||
2df3850c | 4038 | return width; |
c906108c SS |
4039 | } |
4040 | ||
23860348 | 4041 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
4042 | |
4043 | static CORE_ADDR | |
fba45db2 | 4044 | remote_address_masked (CORE_ADDR addr) |
c906108c | 4045 | { |
911c95a5 UW |
4046 | int address_size = remote_address_size; |
4047 | /* If "remoteaddresssize" was not set, default to target address size. */ | |
4048 | if (!address_size) | |
4049 | address_size = gdbarch_addr_bit (current_gdbarch); | |
4050 | ||
4051 | if (address_size > 0 | |
4052 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
4053 | { |
4054 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 4055 | in a ULONGEST variable. */ |
c906108c | 4056 | ULONGEST mask = 1; |
911c95a5 | 4057 | mask = (mask << address_size) - 1; |
c906108c SS |
4058 | addr &= mask; |
4059 | } | |
4060 | return addr; | |
4061 | } | |
4062 | ||
a31ea83d DJ |
4063 | /* Convert BUFFER, binary data at least LEN bytes long, into escaped |
4064 | binary data in OUT_BUF. Set *OUT_LEN to the length of the data | |
4065 | encoded in OUT_BUF, and return the number of bytes in OUT_BUF | |
4066 | (which may be more than *OUT_LEN due to escape characters). The | |
4067 | total number of bytes in the output buffer will be at most | |
4068 | OUT_MAXLEN. */ | |
4069 | ||
4070 | static int | |
4071 | remote_escape_output (const gdb_byte *buffer, int len, | |
4072 | gdb_byte *out_buf, int *out_len, | |
4073 | int out_maxlen) | |
4074 | { | |
4075 | int input_index, output_index; | |
4076 | ||
4077 | output_index = 0; | |
4078 | for (input_index = 0; input_index < len; input_index++) | |
4079 | { | |
4080 | gdb_byte b = buffer[input_index]; | |
4081 | ||
4082 | if (b == '$' || b == '#' || b == '}') | |
4083 | { | |
4084 | /* These must be escaped. */ | |
4085 | if (output_index + 2 > out_maxlen) | |
4086 | break; | |
4087 | out_buf[output_index++] = '}'; | |
4088 | out_buf[output_index++] = b ^ 0x20; | |
4089 | } | |
4090 | else | |
4091 | { | |
4092 | if (output_index + 1 > out_maxlen) | |
4093 | break; | |
4094 | out_buf[output_index++] = b; | |
4095 | } | |
4096 | } | |
4097 | ||
4098 | *out_len = input_index; | |
4099 | return output_index; | |
4100 | } | |
4101 | ||
0876f84a DJ |
4102 | /* Convert BUFFER, escaped data LEN bytes long, into binary data |
4103 | in OUT_BUF. Return the number of bytes written to OUT_BUF. | |
4104 | Raise an error if the total number of bytes exceeds OUT_MAXLEN. | |
4105 | ||
4106 | This function reverses remote_escape_output. It allows more | |
4107 | escaped characters than that function does, in particular because | |
4108 | '*' must be escaped to avoid the run-length encoding processing | |
4109 | in reading packets. */ | |
4110 | ||
4111 | static int | |
4112 | remote_unescape_input (const gdb_byte *buffer, int len, | |
4113 | gdb_byte *out_buf, int out_maxlen) | |
4114 | { | |
4115 | int input_index, output_index; | |
4116 | int escaped; | |
4117 | ||
4118 | output_index = 0; | |
4119 | escaped = 0; | |
4120 | for (input_index = 0; input_index < len; input_index++) | |
4121 | { | |
4122 | gdb_byte b = buffer[input_index]; | |
4123 | ||
4124 | if (output_index + 1 > out_maxlen) | |
4125 | { | |
4126 | warning (_("Received too much data from remote target;" | |
4127 | " ignoring overflow.")); | |
4128 | return output_index; | |
4129 | } | |
4130 | ||
4131 | if (escaped) | |
4132 | { | |
4133 | out_buf[output_index++] = b ^ 0x20; | |
4134 | escaped = 0; | |
4135 | } | |
4136 | else if (b == '}') | |
4137 | escaped = 1; | |
4138 | else | |
4139 | out_buf[output_index++] = b; | |
4140 | } | |
4141 | ||
4142 | if (escaped) | |
4143 | error (_("Unmatched escape character in target response.")); | |
4144 | ||
4145 | return output_index; | |
4146 | } | |
4147 | ||
c906108c SS |
4148 | /* Determine whether the remote target supports binary downloading. |
4149 | This is accomplished by sending a no-op memory write of zero length | |
4150 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
4151 | the whole packet, since many stubs strip the eighth bit and |
4152 | subsequently compute a wrong checksum, which causes real havoc with | |
4153 | remote_write_bytes. | |
7a292a7a | 4154 | |
96baa820 JM |
4155 | NOTE: This can still lose if the serial line is not eight-bit |
4156 | clean. In cases like this, the user should clear "remote | |
23860348 | 4157 | X-packet". */ |
96baa820 | 4158 | |
c906108c | 4159 | static void |
fba45db2 | 4160 | check_binary_download (CORE_ADDR addr) |
c906108c | 4161 | { |
d01949b6 | 4162 | struct remote_state *rs = get_remote_state (); |
24b06219 | 4163 | |
444abaca | 4164 | switch (remote_protocol_packets[PACKET_X].support) |
c906108c | 4165 | { |
96baa820 JM |
4166 | case PACKET_DISABLE: |
4167 | break; | |
4168 | case PACKET_ENABLE: | |
4169 | break; | |
4170 | case PACKET_SUPPORT_UNKNOWN: | |
4171 | { | |
96baa820 | 4172 | char *p; |
802188a7 | 4173 | |
2e9f7625 | 4174 | p = rs->buf; |
96baa820 JM |
4175 | *p++ = 'X'; |
4176 | p += hexnumstr (p, (ULONGEST) addr); | |
4177 | *p++ = ','; | |
4178 | p += hexnumstr (p, (ULONGEST) 0); | |
4179 | *p++ = ':'; | |
4180 | *p = '\0'; | |
802188a7 | 4181 | |
2e9f7625 | 4182 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 4183 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 4184 | |
2e9f7625 | 4185 | if (rs->buf[0] == '\0') |
96baa820 JM |
4186 | { |
4187 | if (remote_debug) | |
4188 | fprintf_unfiltered (gdb_stdlog, | |
4189 | "binary downloading NOT suppported by target\n"); | |
444abaca | 4190 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
4191 | } |
4192 | else | |
4193 | { | |
4194 | if (remote_debug) | |
4195 | fprintf_unfiltered (gdb_stdlog, | |
4196 | "binary downloading suppported by target\n"); | |
444abaca | 4197 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
4198 | } |
4199 | break; | |
4200 | } | |
c906108c SS |
4201 | } |
4202 | } | |
4203 | ||
4204 | /* Write memory data directly to the remote machine. | |
4205 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 4206 | HEADER is the starting part of the packet. |
c906108c SS |
4207 | MEMADDR is the address in the remote memory space. |
4208 | MYADDR is the address of the buffer in our space. | |
4209 | LEN is the number of bytes. | |
a76d924d DJ |
4210 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
4211 | should send data as binary ('X'), or hex-encoded ('M'). | |
4212 | ||
4213 | The function creates packet of the form | |
4214 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
4215 | ||
4216 | where encoding of <DATA> is termined by PACKET_FORMAT. | |
4217 | ||
4218 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
4219 | are omitted. | |
4220 | ||
4221 | Returns the number of bytes transferred, or 0 (setting errno) for | |
23860348 | 4222 | error. Only transfer a single packet. */ |
c906108c | 4223 | |
a76d924d DJ |
4224 | static int |
4225 | remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, | |
4226 | const gdb_byte *myaddr, int len, | |
4227 | char packet_format, int use_length) | |
c906108c | 4228 | { |
6d820c5c | 4229 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 4230 | char *p; |
a76d924d DJ |
4231 | char *plen = NULL; |
4232 | int plenlen = 0; | |
917317f4 JM |
4233 | int todo; |
4234 | int nr_bytes; | |
a257b5bb | 4235 | int payload_size; |
6765f3e5 | 4236 | int payload_length; |
a76d924d DJ |
4237 | int header_length; |
4238 | ||
4239 | if (packet_format != 'X' && packet_format != 'M') | |
4240 | internal_error (__FILE__, __LINE__, | |
4241 | "remote_write_bytes_aux: bad packet format"); | |
c906108c | 4242 | |
b2182ed2 DJ |
4243 | if (len <= 0) |
4244 | return 0; | |
4245 | ||
3de11b2e | 4246 | payload_size = get_memory_write_packet_size (); |
2bc416ba | 4247 | |
6d820c5c DJ |
4248 | /* The packet buffer will be large enough for the payload; |
4249 | get_memory_packet_size ensures this. */ | |
a76d924d | 4250 | rs->buf[0] = '\0'; |
c906108c | 4251 | |
a257b5bb | 4252 | /* Compute the size of the actual payload by subtracting out the |
3de11b2e NS |
4253 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". |
4254 | */ | |
a76d924d DJ |
4255 | payload_size -= strlen ("$,:#NN"); |
4256 | if (!use_length) | |
4257 | /* The comma won't be used. */ | |
4258 | payload_size += 1; | |
4259 | header_length = strlen (header); | |
4260 | payload_size -= header_length; | |
3de11b2e | 4261 | payload_size -= hexnumlen (memaddr); |
c906108c | 4262 | |
a76d924d | 4263 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 4264 | |
a76d924d DJ |
4265 | strcat (rs->buf, header); |
4266 | p = rs->buf + strlen (header); | |
4267 | ||
4268 | /* Compute a best guess of the number of bytes actually transfered. */ | |
4269 | if (packet_format == 'X') | |
c906108c | 4270 | { |
23860348 | 4271 | /* Best guess at number of bytes that will fit. */ |
a257b5bb | 4272 | todo = min (len, payload_size); |
a76d924d DJ |
4273 | if (use_length) |
4274 | payload_size -= hexnumlen (todo); | |
3de11b2e | 4275 | todo = min (todo, payload_size); |
a76d924d DJ |
4276 | } |
4277 | else | |
4278 | { | |
23860348 | 4279 | /* Num bytes that will fit. */ |
a257b5bb | 4280 | todo = min (len, payload_size / 2); |
a76d924d DJ |
4281 | if (use_length) |
4282 | payload_size -= hexnumlen (todo); | |
3de11b2e | 4283 | todo = min (todo, payload_size / 2); |
917317f4 | 4284 | } |
a76d924d | 4285 | |
3de11b2e NS |
4286 | if (todo <= 0) |
4287 | internal_error (__FILE__, __LINE__, | |
4288 | _("minumum packet size too small to write data")); | |
802188a7 | 4289 | |
6765f3e5 DJ |
4290 | /* If we already need another packet, then try to align the end |
4291 | of this packet to a useful boundary. */ | |
4292 | if (todo > 2 * REMOTE_ALIGN_WRITES && todo < len) | |
4293 | todo = ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
4294 | ||
a257b5bb | 4295 | /* Append "<memaddr>". */ |
917317f4 JM |
4296 | memaddr = remote_address_masked (memaddr); |
4297 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 4298 | |
a76d924d DJ |
4299 | if (use_length) |
4300 | { | |
4301 | /* Append ",". */ | |
4302 | *p++ = ','; | |
802188a7 | 4303 | |
a76d924d DJ |
4304 | /* Append <len>. Retain the location/size of <len>. It may need to |
4305 | be adjusted once the packet body has been created. */ | |
4306 | plen = p; | |
4307 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
4308 | p += plenlen; | |
4309 | } | |
a257b5bb AC |
4310 | |
4311 | /* Append ":". */ | |
917317f4 JM |
4312 | *p++ = ':'; |
4313 | *p = '\0'; | |
802188a7 | 4314 | |
a257b5bb | 4315 | /* Append the packet body. */ |
a76d924d | 4316 | if (packet_format == 'X') |
917317f4 | 4317 | { |
917317f4 JM |
4318 | /* Binary mode. Send target system values byte by byte, in |
4319 | increasing byte addresses. Only escape certain critical | |
4320 | characters. */ | |
6765f3e5 DJ |
4321 | payload_length = remote_escape_output (myaddr, todo, p, &nr_bytes, |
4322 | payload_size); | |
4323 | ||
4324 | /* If not all TODO bytes fit, then we'll need another packet. Make | |
9b7194bc DJ |
4325 | a second try to keep the end of the packet aligned. Don't do |
4326 | this if the packet is tiny. */ | |
4327 | if (nr_bytes < todo && nr_bytes > 2 * REMOTE_ALIGN_WRITES) | |
6765f3e5 DJ |
4328 | { |
4329 | int new_nr_bytes; | |
4330 | ||
4331 | new_nr_bytes = (((memaddr + nr_bytes) & ~(REMOTE_ALIGN_WRITES - 1)) | |
4332 | - memaddr); | |
4333 | if (new_nr_bytes != nr_bytes) | |
4334 | payload_length = remote_escape_output (myaddr, new_nr_bytes, | |
4335 | p, &nr_bytes, | |
4336 | payload_size); | |
4337 | } | |
4338 | ||
4339 | p += payload_length; | |
a76d924d | 4340 | if (use_length && nr_bytes < todo) |
c906108c | 4341 | { |
802188a7 | 4342 | /* Escape chars have filled up the buffer prematurely, |
917317f4 JM |
4343 | and we have actually sent fewer bytes than planned. |
4344 | Fix-up the length field of the packet. Use the same | |
4345 | number of characters as before. */ | |
917317f4 JM |
4346 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); |
4347 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 4348 | } |
a76d924d DJ |
4349 | } |
4350 | else | |
4351 | { | |
917317f4 JM |
4352 | /* Normal mode: Send target system values byte by byte, in |
4353 | increasing byte addresses. Each byte is encoded as a two hex | |
4354 | value. */ | |
2644f393 | 4355 | nr_bytes = bin2hex (myaddr, p, todo); |
aa6c0017 | 4356 | p += 2 * nr_bytes; |
c906108c | 4357 | } |
802188a7 | 4358 | |
2e9f7625 | 4359 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 4360 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 4361 | |
2e9f7625 | 4362 | if (rs->buf[0] == 'E') |
917317f4 JM |
4363 | { |
4364 | /* There is no correspondance between what the remote protocol | |
4365 | uses for errors and errno codes. We would like a cleaner way | |
4366 | of representing errors (big enough to include errno codes, | |
4367 | bfd_error codes, and others). But for now just return EIO. */ | |
4368 | errno = EIO; | |
4369 | return 0; | |
4370 | } | |
802188a7 | 4371 | |
23860348 MS |
4372 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send |
4373 | fewer bytes than we'd planned. */ | |
917317f4 | 4374 | return nr_bytes; |
c906108c SS |
4375 | } |
4376 | ||
a76d924d DJ |
4377 | /* Write memory data directly to the remote machine. |
4378 | This does not inform the data cache; the data cache uses this. | |
4379 | MEMADDR is the address in the remote memory space. | |
4380 | MYADDR is the address of the buffer in our space. | |
4381 | LEN is the number of bytes. | |
4382 | ||
4383 | Returns number of bytes transferred, or 0 (setting errno) for | |
4384 | error. Only transfer a single packet. */ | |
4385 | ||
4386 | int | |
4387 | remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, int len) | |
4388 | { | |
4389 | char *packet_format = 0; | |
4390 | ||
4391 | /* Check whether the target supports binary download. */ | |
4392 | check_binary_download (memaddr); | |
4393 | ||
4394 | switch (remote_protocol_packets[PACKET_X].support) | |
4395 | { | |
4396 | case PACKET_ENABLE: | |
4397 | packet_format = "X"; | |
4398 | break; | |
4399 | case PACKET_DISABLE: | |
4400 | packet_format = "M"; | |
4401 | break; | |
4402 | case PACKET_SUPPORT_UNKNOWN: | |
4403 | internal_error (__FILE__, __LINE__, | |
4404 | _("remote_write_bytes: bad internal state")); | |
4405 | default: | |
4406 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
4407 | } | |
4408 | ||
4409 | return remote_write_bytes_aux (packet_format, | |
4410 | memaddr, myaddr, len, packet_format[0], 1); | |
4411 | } | |
4412 | ||
c906108c SS |
4413 | /* Read memory data directly from the remote machine. |
4414 | This does not use the data cache; the data cache uses this. | |
4415 | MEMADDR is the address in the remote memory space. | |
4416 | MYADDR is the address of the buffer in our space. | |
4417 | LEN is the number of bytes. | |
4418 | ||
4419 | Returns number of bytes transferred, or 0 for error. */ | |
4420 | ||
917317f4 JM |
4421 | /* NOTE: cagney/1999-10-18: This function (and its siblings in other |
4422 | remote targets) shouldn't attempt to read the entire buffer. | |
4423 | Instead it should read a single packet worth of data and then | |
4424 | return the byte size of that packet to the caller. The caller (its | |
4425 | caller and its callers caller ;-) already contains code for | |
23860348 | 4426 | handling partial reads. */ |
917317f4 | 4427 | |
449092f6 | 4428 | int |
cfd77fa1 | 4429 | remote_read_bytes (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
c906108c | 4430 | { |
6d820c5c | 4431 | struct remote_state *rs = get_remote_state (); |
23860348 | 4432 | int max_buf_size; /* Max size of packet output buffer. */ |
c906108c SS |
4433 | int origlen; |
4434 | ||
b2182ed2 DJ |
4435 | if (len <= 0) |
4436 | return 0; | |
4437 | ||
11cf8741 | 4438 | max_buf_size = get_memory_read_packet_size (); |
6d820c5c DJ |
4439 | /* The packet buffer will be large enough for the payload; |
4440 | get_memory_packet_size ensures this. */ | |
c906108c SS |
4441 | |
4442 | origlen = len; | |
4443 | while (len > 0) | |
4444 | { | |
c906108c SS |
4445 | char *p; |
4446 | int todo; | |
4447 | int i; | |
4448 | ||
c5aa993b | 4449 | todo = min (len, max_buf_size / 2); /* num bytes that will fit */ |
c906108c SS |
4450 | |
4451 | /* construct "m"<memaddr>","<len>" */ | |
2e9f7625 | 4452 | /* sprintf (rs->buf, "m%lx,%x", (unsigned long) memaddr, todo); */ |
c906108c | 4453 | memaddr = remote_address_masked (memaddr); |
2e9f7625 | 4454 | p = rs->buf; |
c906108c SS |
4455 | *p++ = 'm'; |
4456 | p += hexnumstr (p, (ULONGEST) memaddr); | |
4457 | *p++ = ','; | |
4458 | p += hexnumstr (p, (ULONGEST) todo); | |
4459 | *p = '\0'; | |
4460 | ||
2e9f7625 | 4461 | putpkt (rs->buf); |
6d820c5c | 4462 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 4463 | |
2e9f7625 DJ |
4464 | if (rs->buf[0] == 'E' |
4465 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
4466 | && rs->buf[3] == '\0') | |
c906108c | 4467 | { |
23860348 MS |
4468 | /* There is no correspondance between what the remote |
4469 | protocol uses for errors and errno codes. We would like | |
4470 | a cleaner way of representing errors (big enough to | |
4471 | include errno codes, bfd_error codes, and others). But | |
4472 | for now just return EIO. */ | |
c906108c SS |
4473 | errno = EIO; |
4474 | return 0; | |
4475 | } | |
4476 | ||
c5aa993b JM |
4477 | /* Reply describes memory byte by byte, |
4478 | each byte encoded as two hex characters. */ | |
c906108c | 4479 | |
2e9f7625 | 4480 | p = rs->buf; |
30559e10 | 4481 | if ((i = hex2bin (p, myaddr, todo)) < todo) |
c906108c | 4482 | { |
30559e10 | 4483 | /* Reply is short. This means that we were able to read |
23860348 | 4484 | only part of what we wanted to. */ |
30559e10 | 4485 | return i + (origlen - len); |
c906108c SS |
4486 | } |
4487 | myaddr += todo; | |
4488 | memaddr += todo; | |
4489 | len -= todo; | |
4490 | } | |
4491 | return origlen; | |
4492 | } | |
4493 | \f | |
4494 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
23860348 MS |
4495 | transferring to or from debugger address BUFFER. Write to inferior |
4496 | if SHOULD_WRITE is nonzero. Returns length of data written or | |
4497 | read; 0 for error. TARGET is unused. */ | |
392a587b | 4498 | |
c906108c | 4499 | static int |
961cb7b5 | 4500 | remote_xfer_memory (CORE_ADDR mem_addr, gdb_byte *buffer, int mem_len, |
0a65a603 | 4501 | int should_write, struct mem_attrib *attrib, |
29e57380 | 4502 | struct target_ops *target) |
c906108c | 4503 | { |
4930751a C |
4504 | int res; |
4505 | ||
4930751a | 4506 | if (should_write) |
b2182ed2 | 4507 | res = remote_write_bytes (mem_addr, buffer, mem_len); |
4930751a | 4508 | else |
b2182ed2 | 4509 | res = remote_read_bytes (mem_addr, buffer, mem_len); |
4930751a C |
4510 | |
4511 | return res; | |
c906108c SS |
4512 | } |
4513 | ||
a76d924d DJ |
4514 | /* Sends a packet with content determined by the printf format string |
4515 | FORMAT and the remaining arguments, then gets the reply. Returns | |
4516 | whether the packet was a success, a failure, or unknown. */ | |
4517 | ||
4518 | enum packet_result | |
4519 | remote_send_printf (const char *format, ...) | |
4520 | { | |
4521 | struct remote_state *rs = get_remote_state (); | |
4522 | int max_size = get_remote_packet_size (); | |
4523 | ||
4524 | va_list ap; | |
4525 | va_start (ap, format); | |
4526 | ||
4527 | rs->buf[0] = '\0'; | |
4528 | if (vsnprintf (rs->buf, max_size, format, ap) >= max_size) | |
4529 | internal_error (__FILE__, __LINE__, "Too long remote packet."); | |
4530 | ||
4531 | if (putpkt (rs->buf) < 0) | |
4532 | error (_("Communication problem with target.")); | |
4533 | ||
4534 | rs->buf[0] = '\0'; | |
4535 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4536 | ||
4537 | return packet_check_result (rs->buf); | |
4538 | } | |
4539 | ||
4540 | static void | |
4541 | restore_remote_timeout (void *p) | |
4542 | { | |
4543 | int value = *(int *)p; | |
4544 | remote_timeout = value; | |
4545 | } | |
4546 | ||
4547 | /* Flash writing can take quite some time. We'll set | |
4548 | effectively infinite timeout for flash operations. | |
4549 | In future, we'll need to decide on a better approach. */ | |
4550 | static const int remote_flash_timeout = 1000; | |
4551 | ||
4552 | static void | |
4553 | remote_flash_erase (struct target_ops *ops, | |
4554 | ULONGEST address, LONGEST length) | |
4555 | { | |
4556 | int saved_remote_timeout = remote_timeout; | |
4557 | enum packet_result ret; | |
4558 | ||
4559 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
4560 | &saved_remote_timeout); | |
4561 | remote_timeout = remote_flash_timeout; | |
4562 | ||
4563 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
4564 | paddr (address), | |
4565 | phex (length, 4)); | |
4566 | switch (ret) | |
4567 | { | |
4568 | case PACKET_UNKNOWN: | |
4569 | error (_("Remote target does not support flash erase")); | |
4570 | case PACKET_ERROR: | |
4571 | error (_("Error erasing flash with vFlashErase packet")); | |
4572 | default: | |
4573 | break; | |
4574 | } | |
4575 | ||
4576 | do_cleanups (back_to); | |
4577 | } | |
4578 | ||
4579 | static LONGEST | |
4580 | remote_flash_write (struct target_ops *ops, | |
4581 | ULONGEST address, LONGEST length, | |
4582 | const gdb_byte *data) | |
4583 | { | |
4584 | int saved_remote_timeout = remote_timeout; | |
4585 | int ret; | |
4586 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
4587 | &saved_remote_timeout); | |
4588 | ||
4589 | remote_timeout = remote_flash_timeout; | |
4590 | ret = remote_write_bytes_aux ("vFlashWrite:", address, data, length, 'X', 0); | |
4591 | do_cleanups (back_to); | |
4592 | ||
4593 | return ret; | |
4594 | } | |
4595 | ||
4596 | static void | |
4597 | remote_flash_done (struct target_ops *ops) | |
4598 | { | |
4599 | int saved_remote_timeout = remote_timeout; | |
4600 | int ret; | |
4601 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
4602 | &saved_remote_timeout); | |
4603 | ||
4604 | remote_timeout = remote_flash_timeout; | |
4605 | ret = remote_send_printf ("vFlashDone"); | |
4606 | do_cleanups (back_to); | |
4607 | ||
4608 | switch (ret) | |
4609 | { | |
4610 | case PACKET_UNKNOWN: | |
4611 | error (_("Remote target does not support vFlashDone")); | |
4612 | case PACKET_ERROR: | |
4613 | error (_("Error finishing flash operation")); | |
4614 | default: | |
4615 | break; | |
4616 | } | |
4617 | } | |
4618 | ||
c906108c | 4619 | static void |
fba45db2 | 4620 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
4621 | { |
4622 | puts_filtered ("Debugging a target over a serial line.\n"); | |
4623 | } | |
4624 | \f | |
4625 | /* Stuff for dealing with the packets which are part of this protocol. | |
4626 | See comment at top of file for details. */ | |
4627 | ||
0876f84a | 4628 | /* Read a single character from the remote end. */ |
c906108c SS |
4629 | |
4630 | static int | |
fba45db2 | 4631 | readchar (int timeout) |
c906108c SS |
4632 | { |
4633 | int ch; | |
4634 | ||
2cd58942 | 4635 | ch = serial_readchar (remote_desc, timeout); |
c906108c | 4636 | |
2acceee2 | 4637 | if (ch >= 0) |
0876f84a | 4638 | return ch; |
2acceee2 JM |
4639 | |
4640 | switch ((enum serial_rc) ch) | |
c906108c SS |
4641 | { |
4642 | case SERIAL_EOF: | |
2acceee2 | 4643 | target_mourn_inferior (); |
8a3fe4f8 | 4644 | error (_("Remote connection closed")); |
2acceee2 | 4645 | /* no return */ |
c906108c | 4646 | case SERIAL_ERROR: |
e2e0b3e5 | 4647 | perror_with_name (_("Remote communication error")); |
2acceee2 | 4648 | /* no return */ |
c906108c | 4649 | case SERIAL_TIMEOUT: |
2acceee2 | 4650 | break; |
c906108c | 4651 | } |
2acceee2 | 4652 | return ch; |
c906108c SS |
4653 | } |
4654 | ||
6d820c5c DJ |
4655 | /* Send the command in *BUF to the remote machine, and read the reply |
4656 | into *BUF. Report an error if we get an error reply. Resize | |
4657 | *BUF using xrealloc if necessary to hold the result, and update | |
4658 | *SIZEOF_BUF. */ | |
c906108c SS |
4659 | |
4660 | static void | |
6d820c5c DJ |
4661 | remote_send (char **buf, |
4662 | long *sizeof_buf) | |
c906108c | 4663 | { |
6d820c5c | 4664 | putpkt (*buf); |
c2d11a7d | 4665 | getpkt (buf, sizeof_buf, 0); |
c906108c | 4666 | |
6d820c5c DJ |
4667 | if ((*buf)[0] == 'E') |
4668 | error (_("Remote failure reply: %s"), *buf); | |
c906108c SS |
4669 | } |
4670 | ||
4671 | /* Display a null-terminated packet on stdout, for debugging, using C | |
4672 | string notation. */ | |
4673 | ||
4674 | static void | |
fba45db2 | 4675 | print_packet (char *buf) |
c906108c SS |
4676 | { |
4677 | puts_filtered ("\""); | |
43e526b9 | 4678 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
4679 | puts_filtered ("\""); |
4680 | } | |
4681 | ||
4682 | int | |
fba45db2 | 4683 | putpkt (char *buf) |
c906108c SS |
4684 | { |
4685 | return putpkt_binary (buf, strlen (buf)); | |
4686 | } | |
4687 | ||
4688 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 4689 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 4690 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
4691 | and for a possible /0 if we are debugging (remote_debug) and want |
4692 | to print the sent packet as a string. */ | |
c906108c SS |
4693 | |
4694 | static int | |
fba45db2 | 4695 | putpkt_binary (char *buf, int cnt) |
c906108c SS |
4696 | { |
4697 | int i; | |
4698 | unsigned char csum = 0; | |
11cf8741 | 4699 | char *buf2 = alloca (cnt + 6); |
085dd6e6 | 4700 | |
c906108c SS |
4701 | int ch; |
4702 | int tcount = 0; | |
4703 | char *p; | |
4704 | ||
4705 | /* Copy the packet into buffer BUF2, encapsulating it | |
4706 | and giving it a checksum. */ | |
4707 | ||
c906108c SS |
4708 | p = buf2; |
4709 | *p++ = '$'; | |
4710 | ||
4711 | for (i = 0; i < cnt; i++) | |
4712 | { | |
4713 | csum += buf[i]; | |
4714 | *p++ = buf[i]; | |
4715 | } | |
4716 | *p++ = '#'; | |
4717 | *p++ = tohex ((csum >> 4) & 0xf); | |
4718 | *p++ = tohex (csum & 0xf); | |
4719 | ||
4720 | /* Send it over and over until we get a positive ack. */ | |
4721 | ||
4722 | while (1) | |
4723 | { | |
4724 | int started_error_output = 0; | |
4725 | ||
4726 | if (remote_debug) | |
4727 | { | |
4728 | *p = '\0'; | |
43e526b9 JM |
4729 | fprintf_unfiltered (gdb_stdlog, "Sending packet: "); |
4730 | fputstrn_unfiltered (buf2, p - buf2, 0, gdb_stdlog); | |
d4f3574e | 4731 | fprintf_unfiltered (gdb_stdlog, "..."); |
0f71a2f6 | 4732 | gdb_flush (gdb_stdlog); |
c906108c | 4733 | } |
2cd58942 | 4734 | if (serial_write (remote_desc, buf2, p - buf2)) |
e2e0b3e5 | 4735 | perror_with_name (_("putpkt: write failed")); |
c906108c | 4736 | |
23860348 | 4737 | /* Read until either a timeout occurs (-2) or '+' is read. */ |
c906108c SS |
4738 | while (1) |
4739 | { | |
4740 | ch = readchar (remote_timeout); | |
4741 | ||
c5aa993b | 4742 | if (remote_debug) |
c906108c SS |
4743 | { |
4744 | switch (ch) | |
4745 | { | |
4746 | case '+': | |
1216fa2c | 4747 | case '-': |
c906108c SS |
4748 | case SERIAL_TIMEOUT: |
4749 | case '$': | |
4750 | if (started_error_output) | |
4751 | { | |
4752 | putchar_unfiltered ('\n'); | |
4753 | started_error_output = 0; | |
4754 | } | |
4755 | } | |
4756 | } | |
4757 | ||
4758 | switch (ch) | |
4759 | { | |
4760 | case '+': | |
4761 | if (remote_debug) | |
0f71a2f6 | 4762 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 4763 | return 1; |
1216fa2c AC |
4764 | case '-': |
4765 | if (remote_debug) | |
4766 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
c906108c | 4767 | case SERIAL_TIMEOUT: |
c5aa993b | 4768 | tcount++; |
c906108c SS |
4769 | if (tcount > 3) |
4770 | return 0; | |
23860348 | 4771 | break; /* Retransmit buffer. */ |
c906108c SS |
4772 | case '$': |
4773 | { | |
40e3f985 | 4774 | if (remote_debug) |
2bc416ba | 4775 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 4776 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
4777 | /* It's probably an old response sent because an ACK |
4778 | was lost. Gobble up the packet and ack it so it | |
4779 | doesn't get retransmitted when we resend this | |
4780 | packet. */ | |
6d820c5c | 4781 | skip_frame (); |
d6f7abdf | 4782 | serial_write (remote_desc, "+", 1); |
23860348 | 4783 | continue; /* Now, go look for +. */ |
c906108c SS |
4784 | } |
4785 | default: | |
4786 | if (remote_debug) | |
4787 | { | |
4788 | if (!started_error_output) | |
4789 | { | |
4790 | started_error_output = 1; | |
0f71a2f6 | 4791 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 4792 | } |
0f71a2f6 | 4793 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
4794 | } |
4795 | continue; | |
4796 | } | |
23860348 | 4797 | break; /* Here to retransmit. */ |
c906108c SS |
4798 | } |
4799 | ||
4800 | #if 0 | |
4801 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
4802 | able to get out next time we call QUIT, without anything as |
4803 | violent as interrupt_query. If we want to provide a way out of | |
4804 | here without getting to the next QUIT, it should be based on | |
4805 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
4806 | if (quit_flag) |
4807 | { | |
4808 | quit_flag = 0; | |
4809 | interrupt_query (); | |
4810 | } | |
4811 | #endif | |
4812 | } | |
4813 | } | |
4814 | ||
6d820c5c DJ |
4815 | /* Come here after finding the start of a frame when we expected an |
4816 | ack. Do our best to discard the rest of this packet. */ | |
4817 | ||
4818 | static void | |
4819 | skip_frame (void) | |
4820 | { | |
4821 | int c; | |
4822 | ||
4823 | while (1) | |
4824 | { | |
4825 | c = readchar (remote_timeout); | |
4826 | switch (c) | |
4827 | { | |
4828 | case SERIAL_TIMEOUT: | |
4829 | /* Nothing we can do. */ | |
4830 | return; | |
4831 | case '#': | |
4832 | /* Discard the two bytes of checksum and stop. */ | |
4833 | c = readchar (remote_timeout); | |
4834 | if (c >= 0) | |
4835 | c = readchar (remote_timeout); | |
4836 | ||
4837 | return; | |
4838 | case '*': /* Run length encoding. */ | |
4839 | /* Discard the repeat count. */ | |
4840 | c = readchar (remote_timeout); | |
4841 | if (c < 0) | |
4842 | return; | |
4843 | break; | |
4844 | default: | |
4845 | /* A regular character. */ | |
4846 | break; | |
4847 | } | |
4848 | } | |
4849 | } | |
4850 | ||
c906108c | 4851 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
4852 | into *BUF, verifying the checksum, length, and handling run-length |
4853 | compression. NUL terminate the buffer. If there is not enough room, | |
4854 | expand *BUF using xrealloc. | |
c906108c | 4855 | |
c2d11a7d JM |
4856 | Returns -1 on error, number of characters in buffer (ignoring the |
4857 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 4858 | SERIAL status indications). */ |
c2d11a7d JM |
4859 | |
4860 | static long | |
6d820c5c DJ |
4861 | read_frame (char **buf_p, |
4862 | long *sizeof_buf) | |
c906108c SS |
4863 | { |
4864 | unsigned char csum; | |
c2d11a7d | 4865 | long bc; |
c906108c | 4866 | int c; |
6d820c5c | 4867 | char *buf = *buf_p; |
c906108c SS |
4868 | |
4869 | csum = 0; | |
c2d11a7d | 4870 | bc = 0; |
c906108c SS |
4871 | |
4872 | while (1) | |
4873 | { | |
4874 | c = readchar (remote_timeout); | |
c906108c SS |
4875 | switch (c) |
4876 | { | |
4877 | case SERIAL_TIMEOUT: | |
4878 | if (remote_debug) | |
0f71a2f6 | 4879 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 4880 | return -1; |
c906108c SS |
4881 | case '$': |
4882 | if (remote_debug) | |
0f71a2f6 JM |
4883 | fputs_filtered ("Saw new packet start in middle of old one\n", |
4884 | gdb_stdlog); | |
23860348 | 4885 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
4886 | case '#': |
4887 | { | |
4888 | unsigned char pktcsum; | |
e1b09194 AC |
4889 | int check_0 = 0; |
4890 | int check_1 = 0; | |
c906108c | 4891 | |
c2d11a7d | 4892 | buf[bc] = '\0'; |
c906108c | 4893 | |
e1b09194 AC |
4894 | check_0 = readchar (remote_timeout); |
4895 | if (check_0 >= 0) | |
4896 | check_1 = readchar (remote_timeout); | |
802188a7 | 4897 | |
e1b09194 AC |
4898 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
4899 | { | |
4900 | if (remote_debug) | |
2bc416ba | 4901 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 4902 | gdb_stdlog); |
e1b09194 AC |
4903 | return -1; |
4904 | } | |
4905 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
4906 | { |
4907 | if (remote_debug) | |
2bc416ba | 4908 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 4909 | gdb_stdlog); |
40e3f985 FN |
4910 | return -1; |
4911 | } | |
c906108c | 4912 | |
e1b09194 | 4913 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 4914 | if (csum == pktcsum) |
c2d11a7d | 4915 | return bc; |
c906108c | 4916 | |
c5aa993b | 4917 | if (remote_debug) |
c906108c | 4918 | { |
0f71a2f6 | 4919 | fprintf_filtered (gdb_stdlog, |
c5aa993b | 4920 | "Bad checksum, sentsum=0x%x, csum=0x%x, buf=", |
0f71a2f6 | 4921 | pktcsum, csum); |
0876f84a | 4922 | fputstrn_filtered (buf, bc, 0, gdb_stdlog); |
0f71a2f6 | 4923 | fputs_filtered ("\n", gdb_stdlog); |
c906108c | 4924 | } |
c2d11a7d | 4925 | /* Number of characters in buffer ignoring trailing |
23860348 | 4926 | NULL. */ |
c2d11a7d | 4927 | return -1; |
c906108c | 4928 | } |
23860348 | 4929 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
4930 | { |
4931 | int repeat; | |
4932 | csum += c; | |
c906108c | 4933 | |
b4501125 AC |
4934 | c = readchar (remote_timeout); |
4935 | csum += c; | |
23860348 | 4936 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 4937 | |
23860348 | 4938 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 4939 | |
6d820c5c | 4940 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 4941 | { |
6d820c5c DJ |
4942 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
4943 | { | |
4944 | /* Make some more room in the buffer. */ | |
4945 | *sizeof_buf += repeat; | |
4946 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
4947 | buf = *buf_p; | |
4948 | } | |
4949 | ||
c2d11a7d JM |
4950 | memset (&buf[bc], buf[bc - 1], repeat); |
4951 | bc += repeat; | |
c2c6d25f JM |
4952 | continue; |
4953 | } | |
4954 | ||
c2d11a7d | 4955 | buf[bc] = '\0'; |
6d820c5c | 4956 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 4957 | return -1; |
c2c6d25f | 4958 | } |
c906108c | 4959 | default: |
6d820c5c | 4960 | if (bc >= *sizeof_buf - 1) |
c906108c | 4961 | { |
6d820c5c DJ |
4962 | /* Make some more room in the buffer. */ |
4963 | *sizeof_buf *= 2; | |
4964 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
4965 | buf = *buf_p; | |
c906108c SS |
4966 | } |
4967 | ||
6d820c5c DJ |
4968 | buf[bc++] = c; |
4969 | csum += c; | |
4970 | continue; | |
c906108c SS |
4971 | } |
4972 | } | |
4973 | } | |
4974 | ||
4975 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
4976 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
4977 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
4978 | rather than timing out; this is used (in synchronous mode) to wait | |
4979 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
4980 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
4981 | don't have to change all the calls to getpkt to deal with the | |
4982 | return value, because at the moment I don't know what the right | |
23860348 | 4983 | thing to do it for those. */ |
c906108c | 4984 | void |
6d820c5c DJ |
4985 | getpkt (char **buf, |
4986 | long *sizeof_buf, | |
c2d11a7d | 4987 | int forever) |
d9fcf2fb JM |
4988 | { |
4989 | int timed_out; | |
4990 | ||
4991 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
4992 | } | |
4993 | ||
4994 | ||
4995 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
4996 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
4997 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
4998 | rather than timing out; this is used (in synchronous mode) to wait | |
4999 | for a target that is is executing user code to stop. If FOREVER == | |
5000 | 0, this function is allowed to time out gracefully and return an | |
0876f84a DJ |
5001 | indication of this to the caller. Otherwise return the number |
5002 | of bytes read. */ | |
3172dc30 | 5003 | static int |
6d820c5c | 5004 | getpkt_sane (char **buf, long *sizeof_buf, int forever) |
c906108c SS |
5005 | { |
5006 | int c; | |
5007 | int tries; | |
5008 | int timeout; | |
5009 | int val; | |
5010 | ||
6d820c5c | 5011 | strcpy (*buf, "timeout"); |
c906108c SS |
5012 | |
5013 | if (forever) | |
5014 | { | |
c906108c | 5015 | timeout = watchdog > 0 ? watchdog : -1; |
c906108c SS |
5016 | } |
5017 | ||
5018 | else | |
5019 | timeout = remote_timeout; | |
5020 | ||
5021 | #define MAX_TRIES 3 | |
5022 | ||
5023 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
5024 | { | |
5025 | /* This can loop forever if the remote side sends us characters | |
23860348 MS |
5026 | continuously, but if it pauses, we'll get a zero from |
5027 | readchar because of timeout. Then we'll count that as a | |
5028 | retry. */ | |
c906108c | 5029 | |
23860348 MS |
5030 | /* Note that we will only wait forever prior to the start of a |
5031 | packet. After that, we expect characters to arrive at a | |
5032 | brisk pace. They should show up within remote_timeout | |
5033 | intervals. */ | |
c906108c SS |
5034 | |
5035 | do | |
5036 | { | |
5037 | c = readchar (timeout); | |
5038 | ||
5039 | if (c == SERIAL_TIMEOUT) | |
5040 | { | |
23860348 | 5041 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 5042 | { |
2acceee2 | 5043 | QUIT; |
c906108c | 5044 | target_mourn_inferior (); |
489eaeba | 5045 | error (_("Watchdog timeout has expired. Target detached.")); |
c906108c | 5046 | } |
c906108c | 5047 | if (remote_debug) |
0f71a2f6 | 5048 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c SS |
5049 | goto retry; |
5050 | } | |
5051 | } | |
5052 | while (c != '$'); | |
5053 | ||
5054 | /* We've found the start of a packet, now collect the data. */ | |
5055 | ||
c2d11a7d | 5056 | val = read_frame (buf, sizeof_buf); |
c906108c | 5057 | |
c2d11a7d | 5058 | if (val >= 0) |
c906108c SS |
5059 | { |
5060 | if (remote_debug) | |
43e526b9 JM |
5061 | { |
5062 | fprintf_unfiltered (gdb_stdlog, "Packet received: "); | |
0876f84a | 5063 | fputstrn_unfiltered (*buf, val, 0, gdb_stdlog); |
43e526b9 JM |
5064 | fprintf_unfiltered (gdb_stdlog, "\n"); |
5065 | } | |
2cd58942 | 5066 | serial_write (remote_desc, "+", 1); |
0876f84a | 5067 | return val; |
c906108c SS |
5068 | } |
5069 | ||
5070 | /* Try the whole thing again. */ | |
5071 | retry: | |
2cd58942 | 5072 | serial_write (remote_desc, "-", 1); |
c906108c SS |
5073 | } |
5074 | ||
2bc416ba | 5075 | /* We have tried hard enough, and just can't receive the packet. |
23860348 | 5076 | Give up. */ |
c906108c | 5077 | |
a3f17187 | 5078 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); |
2cd58942 | 5079 | serial_write (remote_desc, "+", 1); |
0876f84a | 5080 | return -1; |
c906108c SS |
5081 | } |
5082 | \f | |
5083 | static void | |
fba45db2 | 5084 | remote_kill (void) |
c906108c SS |
5085 | { |
5086 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
5087 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
5088 | if (kill_kludge) | |
5089 | { | |
5090 | kill_kludge = 0; | |
5091 | target_mourn_inferior (); | |
5092 | return; | |
5093 | } | |
5094 | ||
5095 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
5096 | speaking terms with the remote system. */ | |
c5aa993b | 5097 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
c906108c SS |
5098 | |
5099 | /* Don't wait for it to die. I'm not really sure it matters whether | |
5100 | we do or not. For the existing stubs, kill is a noop. */ | |
5101 | target_mourn_inferior (); | |
5102 | } | |
5103 | ||
23860348 | 5104 | /* Async version of remote_kill. */ |
43ff13b4 | 5105 | static void |
fba45db2 | 5106 | remote_async_kill (void) |
43ff13b4 | 5107 | { |
23860348 | 5108 | /* Unregister the file descriptor from the event loop. */ |
ed9a39eb | 5109 | if (target_is_async_p ()) |
2cd58942 | 5110 | serial_async (remote_desc, NULL, 0); |
43ff13b4 JM |
5111 | |
5112 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
5113 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
5114 | if (kill_kludge) | |
5115 | { | |
5116 | kill_kludge = 0; | |
5117 | target_mourn_inferior (); | |
5118 | return; | |
5119 | } | |
5120 | ||
23860348 MS |
5121 | /* Use catch_errors so the user can quit from gdb even when we |
5122 | aren't on speaking terms with the remote system. */ | |
c5aa993b | 5123 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
5124 | |
5125 | /* Don't wait for it to die. I'm not really sure it matters whether | |
5126 | we do or not. For the existing stubs, kill is a noop. */ | |
5127 | target_mourn_inferior (); | |
5128 | } | |
5129 | ||
c906108c | 5130 | static void |
fba45db2 | 5131 | remote_mourn (void) |
c906108c SS |
5132 | { |
5133 | remote_mourn_1 (&remote_ops); | |
5134 | } | |
5135 | ||
53a5351d | 5136 | static void |
fba45db2 | 5137 | remote_async_mourn (void) |
53a5351d JM |
5138 | { |
5139 | remote_mourn_1 (&remote_async_ops); | |
5140 | } | |
5141 | ||
c906108c | 5142 | static void |
fba45db2 | 5143 | extended_remote_mourn (void) |
c906108c SS |
5144 | { |
5145 | /* We do _not_ want to mourn the target like this; this will | |
5146 | remove the extended remote target from the target stack, | |
802188a7 | 5147 | and the next time the user says "run" it'll fail. |
c906108c SS |
5148 | |
5149 | FIXME: What is the right thing to do here? */ | |
5150 | #if 0 | |
5151 | remote_mourn_1 (&extended_remote_ops); | |
5152 | #endif | |
5153 | } | |
5154 | ||
5155 | /* Worker function for remote_mourn. */ | |
5156 | static void | |
fba45db2 | 5157 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
5158 | { |
5159 | unpush_target (target); | |
5160 | generic_mourn_inferior (); | |
5161 | } | |
5162 | ||
5163 | /* In the extended protocol we want to be able to do things like | |
5164 | "run" and have them basically work as expected. So we need | |
802188a7 | 5165 | a special create_inferior function. |
c906108c SS |
5166 | |
5167 | FIXME: One day add support for changing the exec file | |
5168 | we're debugging, arguments and an environment. */ | |
5169 | ||
5170 | static void | |
23860348 MS |
5171 | extended_remote_create_inferior (char *exec_file, char *args, |
5172 | char **env, int from_tty) | |
c906108c SS |
5173 | { |
5174 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
5175 | the remote server. */ | |
5176 | remove_breakpoints (); | |
5177 | ||
5178 | /* Now restart the remote server. */ | |
5179 | extended_remote_restart (); | |
5180 | ||
424163ea DJ |
5181 | /* NOTE: We don't need to recheck for a target description here; but |
5182 | if we gain the ability to switch the remote executable we may | |
5183 | need to, if for instance we are running a process which requested | |
5184 | different emulated hardware from the operating system. A | |
5185 | concrete example of this is ARM GNU/Linux, where some binaries | |
5186 | will have a legacy FPA coprocessor emulated and others may have | |
5187 | access to a hardware VFP unit. */ | |
5188 | ||
c906108c SS |
5189 | /* Now put the breakpoints back in. This way we're safe if the |
5190 | restart function works via a unix fork on the remote side. */ | |
5191 | insert_breakpoints (); | |
5192 | ||
5193 | /* Clean up from the last time we were running. */ | |
5194 | clear_proceed_status (); | |
c906108c SS |
5195 | } |
5196 | ||
23860348 | 5197 | /* Async version of extended_remote_create_inferior. */ |
43ff13b4 | 5198 | static void |
23860348 MS |
5199 | extended_remote_async_create_inferior (char *exec_file, char *args, |
5200 | char **env, int from_tty) | |
43ff13b4 JM |
5201 | { |
5202 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
5203 | the remote server. */ | |
5204 | remove_breakpoints (); | |
5205 | ||
5206 | /* If running asynchronously, register the target file descriptor | |
23860348 | 5207 | with the event loop. */ |
362646f5 | 5208 | if (target_can_async_p ()) |
2acceee2 | 5209 | target_async (inferior_event_handler, 0); |
43ff13b4 JM |
5210 | |
5211 | /* Now restart the remote server. */ | |
5212 | extended_remote_restart (); | |
5213 | ||
424163ea DJ |
5214 | /* NOTE: We don't need to recheck for a target description here; but |
5215 | if we gain the ability to switch the remote executable we may | |
5216 | need to, if for instance we are running a process which requested | |
5217 | different emulated hardware from the operating system. A | |
5218 | concrete example of this is ARM GNU/Linux, where some binaries | |
5219 | will have a legacy FPA coprocessor emulated and others may have | |
5220 | access to a hardware VFP unit. */ | |
5221 | ||
43ff13b4 JM |
5222 | /* Now put the breakpoints back in. This way we're safe if the |
5223 | restart function works via a unix fork on the remote side. */ | |
5224 | insert_breakpoints (); | |
5225 | ||
5226 | /* Clean up from the last time we were running. */ | |
5227 | clear_proceed_status (); | |
43ff13b4 | 5228 | } |
c906108c | 5229 | \f |
c5aa993b | 5230 | |
8181d85f DJ |
5231 | /* Insert a breakpoint. On targets that have software breakpoint |
5232 | support, we ask the remote target to do the work; on targets | |
5233 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c SS |
5234 | |
5235 | static int | |
8181d85f | 5236 | remote_insert_breakpoint (struct bp_target_info *bp_tgt) |
c906108c | 5237 | { |
8181d85f | 5238 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 5239 | struct remote_state *rs = get_remote_state (); |
96baa820 | 5240 | |
d471ea57 AC |
5241 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
5242 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
5243 | fails, and the user has explicitly requested the Z support then | |
23860348 | 5244 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 5245 | |
444abaca | 5246 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 5247 | { |
6d820c5c | 5248 | char *p = rs->buf; |
802188a7 | 5249 | |
96baa820 JM |
5250 | *(p++) = 'Z'; |
5251 | *(p++) = '0'; | |
5252 | *(p++) = ','; | |
3b3b875c UW |
5253 | gdbarch_breakpoint_from_pc |
5254 | (current_gdbarch, &bp_tgt->placed_address, &bp_tgt->placed_size); | |
8181d85f DJ |
5255 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
5256 | p += hexnumstr (p, addr); | |
5257 | sprintf (p, ",%d", bp_tgt->placed_size); | |
802188a7 | 5258 | |
6d820c5c DJ |
5259 | putpkt (rs->buf); |
5260 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5261 | |
6d820c5c | 5262 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 5263 | { |
d471ea57 AC |
5264 | case PACKET_ERROR: |
5265 | return -1; | |
5266 | case PACKET_OK: | |
5267 | return 0; | |
5268 | case PACKET_UNKNOWN: | |
5269 | break; | |
96baa820 JM |
5270 | } |
5271 | } | |
c906108c | 5272 | |
8181d85f | 5273 | return memory_insert_breakpoint (bp_tgt); |
c906108c SS |
5274 | } |
5275 | ||
5276 | static int | |
8181d85f | 5277 | remote_remove_breakpoint (struct bp_target_info *bp_tgt) |
c906108c | 5278 | { |
8181d85f | 5279 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 5280 | struct remote_state *rs = get_remote_state (); |
96baa820 JM |
5281 | int bp_size; |
5282 | ||
444abaca | 5283 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 5284 | { |
6d820c5c | 5285 | char *p = rs->buf; |
802188a7 | 5286 | |
96baa820 JM |
5287 | *(p++) = 'z'; |
5288 | *(p++) = '0'; | |
5289 | *(p++) = ','; | |
5290 | ||
8181d85f DJ |
5291 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
5292 | p += hexnumstr (p, addr); | |
5293 | sprintf (p, ",%d", bp_tgt->placed_size); | |
802188a7 | 5294 | |
6d820c5c DJ |
5295 | putpkt (rs->buf); |
5296 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5297 | |
6d820c5c | 5298 | return (rs->buf[0] == 'E'); |
96baa820 JM |
5299 | } |
5300 | ||
8181d85f | 5301 | return memory_remove_breakpoint (bp_tgt); |
c906108c SS |
5302 | } |
5303 | ||
d471ea57 AC |
5304 | static int |
5305 | watchpoint_to_Z_packet (int type) | |
5306 | { | |
5307 | switch (type) | |
5308 | { | |
5309 | case hw_write: | |
bb858e6a | 5310 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
5311 | break; |
5312 | case hw_read: | |
bb858e6a | 5313 | return Z_PACKET_READ_WP; |
d471ea57 AC |
5314 | break; |
5315 | case hw_access: | |
bb858e6a | 5316 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
5317 | break; |
5318 | default: | |
8e65ff28 | 5319 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5320 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
5321 | } |
5322 | } | |
5323 | ||
3c3bea1c | 5324 | static int |
fba45db2 | 5325 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 5326 | { |
d01949b6 | 5327 | struct remote_state *rs = get_remote_state (); |
e514a9d6 | 5328 | char *p; |
d471ea57 | 5329 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 5330 | |
444abaca | 5331 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
5cffb350 | 5332 | return -1; |
802188a7 | 5333 | |
6d820c5c DJ |
5334 | sprintf (rs->buf, "Z%x,", packet); |
5335 | p = strchr (rs->buf, '\0'); | |
96baa820 JM |
5336 | addr = remote_address_masked (addr); |
5337 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 5338 | sprintf (p, ",%x", len); |
802188a7 | 5339 | |
6d820c5c DJ |
5340 | putpkt (rs->buf); |
5341 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5342 | |
6d820c5c | 5343 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
5344 | { |
5345 | case PACKET_ERROR: | |
5346 | case PACKET_UNKNOWN: | |
5347 | return -1; | |
5348 | case PACKET_OK: | |
5349 | return 0; | |
5350 | } | |
8e65ff28 | 5351 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5352 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
5353 | } |
5354 | ||
d471ea57 | 5355 | |
3c3bea1c | 5356 | static int |
fba45db2 | 5357 | remote_remove_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 5358 | { |
d01949b6 | 5359 | struct remote_state *rs = get_remote_state (); |
e514a9d6 | 5360 | char *p; |
d471ea57 AC |
5361 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
5362 | ||
444abaca | 5363 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
5cffb350 | 5364 | return -1; |
802188a7 | 5365 | |
6d820c5c DJ |
5366 | sprintf (rs->buf, "z%x,", packet); |
5367 | p = strchr (rs->buf, '\0'); | |
96baa820 JM |
5368 | addr = remote_address_masked (addr); |
5369 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 5370 | sprintf (p, ",%x", len); |
6d820c5c DJ |
5371 | putpkt (rs->buf); |
5372 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5373 | |
6d820c5c | 5374 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
5375 | { |
5376 | case PACKET_ERROR: | |
5377 | case PACKET_UNKNOWN: | |
5378 | return -1; | |
5379 | case PACKET_OK: | |
5380 | return 0; | |
5381 | } | |
8e65ff28 | 5382 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5383 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
5384 | } |
5385 | ||
3c3bea1c | 5386 | |
501eef12 AC |
5387 | int remote_hw_watchpoint_limit = -1; |
5388 | int remote_hw_breakpoint_limit = -1; | |
d471ea57 | 5389 | |
b9362cc7 | 5390 | static int |
3c3bea1c | 5391 | remote_check_watch_resources (int type, int cnt, int ot) |
96baa820 | 5392 | { |
3c3bea1c GS |
5393 | if (type == bp_hardware_breakpoint) |
5394 | { | |
5395 | if (remote_hw_breakpoint_limit == 0) | |
5396 | return 0; | |
501eef12 AC |
5397 | else if (remote_hw_breakpoint_limit < 0) |
5398 | return 1; | |
3c3bea1c GS |
5399 | else if (cnt <= remote_hw_breakpoint_limit) |
5400 | return 1; | |
5401 | } | |
5402 | else | |
5403 | { | |
5404 | if (remote_hw_watchpoint_limit == 0) | |
5405 | return 0; | |
501eef12 AC |
5406 | else if (remote_hw_watchpoint_limit < 0) |
5407 | return 1; | |
3c3bea1c GS |
5408 | else if (ot) |
5409 | return -1; | |
5410 | else if (cnt <= remote_hw_watchpoint_limit) | |
5411 | return 1; | |
5412 | } | |
5413 | return -1; | |
5414 | } | |
5415 | ||
b9362cc7 | 5416 | static int |
3c3bea1c GS |
5417 | remote_stopped_by_watchpoint (void) |
5418 | { | |
5419 | return remote_stopped_by_watchpoint_p; | |
5420 | } | |
5421 | ||
4aa7a7f5 JJ |
5422 | static int |
5423 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 5424 | { |
4aa7a7f5 | 5425 | int rc = 0; |
d983da9c | 5426 | if (remote_stopped_by_watchpoint ()) |
4aa7a7f5 JJ |
5427 | { |
5428 | *addr_p = remote_watch_data_address; | |
5429 | rc = 1; | |
5430 | } | |
5431 | ||
5432 | return rc; | |
3c3bea1c GS |
5433 | } |
5434 | ||
5435 | ||
5436 | static int | |
8181d85f | 5437 | remote_insert_hw_breakpoint (struct bp_target_info *bp_tgt) |
3c3bea1c | 5438 | { |
8181d85f | 5439 | CORE_ADDR addr; |
d01949b6 | 5440 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 5441 | char *p = rs->buf; |
802188a7 | 5442 | |
c8189ed1 | 5443 | /* The length field should be set to the size of a breakpoint |
8181d85f | 5444 | instruction, even though we aren't inserting one ourselves. */ |
c8189ed1 | 5445 | |
3b3b875c UW |
5446 | gdbarch_breakpoint_from_pc |
5447 | (current_gdbarch, &bp_tgt->placed_address, &bp_tgt->placed_size); | |
3c3bea1c | 5448 | |
444abaca | 5449 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 5450 | return -1; |
2bc416ba | 5451 | |
96baa820 JM |
5452 | *(p++) = 'Z'; |
5453 | *(p++) = '1'; | |
5454 | *(p++) = ','; | |
802188a7 | 5455 | |
8181d85f | 5456 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 5457 | p += hexnumstr (p, (ULONGEST) addr); |
8181d85f | 5458 | sprintf (p, ",%x", bp_tgt->placed_size); |
96baa820 | 5459 | |
6d820c5c DJ |
5460 | putpkt (rs->buf); |
5461 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5462 | |
6d820c5c | 5463 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
5464 | { |
5465 | case PACKET_ERROR: | |
5466 | case PACKET_UNKNOWN: | |
5467 | return -1; | |
5468 | case PACKET_OK: | |
5469 | return 0; | |
5470 | } | |
8e65ff28 | 5471 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5472 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
5473 | } |
5474 | ||
d471ea57 | 5475 | |
802188a7 | 5476 | static int |
8181d85f | 5477 | remote_remove_hw_breakpoint (struct bp_target_info *bp_tgt) |
96baa820 | 5478 | { |
8181d85f | 5479 | CORE_ADDR addr; |
d01949b6 | 5480 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 5481 | char *p = rs->buf; |
c8189ed1 | 5482 | |
444abaca | 5483 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 5484 | return -1; |
802188a7 | 5485 | |
96baa820 JM |
5486 | *(p++) = 'z'; |
5487 | *(p++) = '1'; | |
5488 | *(p++) = ','; | |
802188a7 | 5489 | |
8181d85f | 5490 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 5491 | p += hexnumstr (p, (ULONGEST) addr); |
8181d85f | 5492 | sprintf (p, ",%x", bp_tgt->placed_size); |
96baa820 | 5493 | |
6d820c5c DJ |
5494 | putpkt (rs->buf); |
5495 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 5496 | |
6d820c5c | 5497 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
5498 | { |
5499 | case PACKET_ERROR: | |
5500 | case PACKET_UNKNOWN: | |
5501 | return -1; | |
5502 | case PACKET_OK: | |
5503 | return 0; | |
5504 | } | |
8e65ff28 | 5505 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5506 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 5507 | } |
96baa820 | 5508 | |
c906108c SS |
5509 | /* Some targets are only capable of doing downloads, and afterwards |
5510 | they switch to the remote serial protocol. This function provides | |
5511 | a clean way to get from the download target to the remote target. | |
5512 | It's basically just a wrapper so that we don't have to expose any | |
5513 | of the internal workings of remote.c. | |
5514 | ||
5515 | Prior to calling this routine, you should shutdown the current | |
5516 | target code, else you will get the "A program is being debugged | |
5517 | already..." message. Usually a call to pop_target() suffices. */ | |
5518 | ||
5519 | void | |
fba45db2 | 5520 | push_remote_target (char *name, int from_tty) |
c906108c | 5521 | { |
a3f17187 | 5522 | printf_filtered (_("Switching to remote protocol\n")); |
c906108c SS |
5523 | remote_open (name, from_tty); |
5524 | } | |
5525 | ||
23860348 | 5526 | /* Table used by the crc32 function to calcuate the checksum. */ |
c906108c | 5527 | |
c5aa993b JM |
5528 | static unsigned long crc32_table[256] = |
5529 | {0, 0}; | |
c906108c SS |
5530 | |
5531 | static unsigned long | |
fba45db2 | 5532 | crc32 (unsigned char *buf, int len, unsigned int crc) |
c906108c | 5533 | { |
c5aa993b | 5534 | if (!crc32_table[1]) |
c906108c | 5535 | { |
23860348 | 5536 | /* Initialize the CRC table and the decoding table. */ |
c906108c SS |
5537 | int i, j; |
5538 | unsigned int c; | |
5539 | ||
5540 | for (i = 0; i < 256; i++) | |
c5aa993b JM |
5541 | { |
5542 | for (c = i << 24, j = 8; j > 0; --j) | |
5543 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
5544 | crc32_table[i] = c; | |
5545 | } | |
c906108c SS |
5546 | } |
5547 | ||
5548 | while (len--) | |
5549 | { | |
5550 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |
5551 | buf++; | |
5552 | } | |
5553 | return crc; | |
5554 | } | |
5555 | ||
5556 | /* compare-sections command | |
5557 | ||
5558 | With no arguments, compares each loadable section in the exec bfd | |
5559 | with the same memory range on the target, and reports mismatches. | |
5560 | Useful for verifying the image on the target against the exec file. | |
5561 | Depends on the target understanding the new "qCRC:" request. */ | |
5562 | ||
e514a9d6 JM |
5563 | /* FIXME: cagney/1999-10-26: This command should be broken down into a |
5564 | target method (target verify memory) and generic version of the | |
5565 | actual command. This will allow other high-level code (especially | |
23860348 | 5566 | generic_load()) to make use of this target functionality. */ |
e514a9d6 | 5567 | |
c906108c | 5568 | static void |
fba45db2 | 5569 | compare_sections_command (char *args, int from_tty) |
c906108c | 5570 | { |
d01949b6 | 5571 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
5572 | asection *s; |
5573 | unsigned long host_crc, target_crc; | |
5574 | extern bfd *exec_bfd; | |
5575 | struct cleanup *old_chain; | |
085dd6e6 JM |
5576 | char *tmp; |
5577 | char *sectdata; | |
ce359b09 | 5578 | const char *sectname; |
c906108c SS |
5579 | bfd_size_type size; |
5580 | bfd_vma lma; | |
5581 | int matched = 0; | |
5582 | int mismatched = 0; | |
5583 | ||
5584 | if (!exec_bfd) | |
8a3fe4f8 | 5585 | error (_("command cannot be used without an exec file")); |
c906108c SS |
5586 | if (!current_target.to_shortname || |
5587 | strcmp (current_target.to_shortname, "remote") != 0) | |
8a3fe4f8 | 5588 | error (_("command can only be used with remote target")); |
c906108c | 5589 | |
c5aa993b | 5590 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
5591 | { |
5592 | if (!(s->flags & SEC_LOAD)) | |
c5aa993b | 5593 | continue; /* skip non-loadable section */ |
c906108c | 5594 | |
2c500098 | 5595 | size = bfd_get_section_size (s); |
c906108c | 5596 | if (size == 0) |
c5aa993b | 5597 | continue; /* skip zero-length section */ |
c906108c | 5598 | |
ce359b09 | 5599 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 5600 | if (args && strcmp (args, sectname) != 0) |
c5aa993b | 5601 | continue; /* not the section selected by user */ |
c906108c | 5602 | |
c5aa993b | 5603 | matched = 1; /* do this section */ |
c906108c | 5604 | lma = s->lma; |
23860348 | 5605 | /* FIXME: assumes lma can fit into long. */ |
ea9c271d | 5606 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", |
ecbc58df | 5607 | (long) lma, (long) size); |
6d820c5c | 5608 | putpkt (rs->buf); |
c906108c | 5609 | |
23860348 MS |
5610 | /* Be clever; compute the host_crc before waiting for target |
5611 | reply. */ | |
c906108c | 5612 | sectdata = xmalloc (size); |
b8c9b27d | 5613 | old_chain = make_cleanup (xfree, sectdata); |
c906108c SS |
5614 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
5615 | host_crc = crc32 ((unsigned char *) sectdata, size, 0xffffffff); | |
5616 | ||
6d820c5c DJ |
5617 | getpkt (&rs->buf, &rs->buf_size, 0); |
5618 | if (rs->buf[0] == 'E') | |
8a3fe4f8 | 5619 | error (_("target memory fault, section %s, range 0x%s -- 0x%s"), |
823ca731 | 5620 | sectname, paddr (lma), paddr (lma + size)); |
6d820c5c | 5621 | if (rs->buf[0] != 'C') |
8a3fe4f8 | 5622 | error (_("remote target does not support this operation")); |
c906108c | 5623 | |
6d820c5c | 5624 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) |
c906108c SS |
5625 | target_crc = target_crc * 16 + fromhex (*tmp); |
5626 | ||
d4f3574e SS |
5627 | printf_filtered ("Section %s, range 0x%s -- 0x%s: ", |
5628 | sectname, paddr (lma), paddr (lma + size)); | |
c906108c SS |
5629 | if (host_crc == target_crc) |
5630 | printf_filtered ("matched.\n"); | |
5631 | else | |
c5aa993b JM |
5632 | { |
5633 | printf_filtered ("MIS-MATCHED!\n"); | |
5634 | mismatched++; | |
5635 | } | |
c906108c SS |
5636 | |
5637 | do_cleanups (old_chain); | |
5638 | } | |
5639 | if (mismatched > 0) | |
8a3fe4f8 AC |
5640 | warning (_("One or more sections of the remote executable does not match\n\ |
5641 | the loaded file\n")); | |
c906108c | 5642 | if (args && !matched) |
a3f17187 | 5643 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
5644 | } |
5645 | ||
0e7f50da UW |
5646 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
5647 | into remote target. The number of bytes written to the remote | |
5648 | target is returned, or -1 for error. */ | |
5649 | ||
5650 | static LONGEST | |
5651 | remote_write_qxfer (struct target_ops *ops, const char *object_name, | |
5652 | const char *annex, const gdb_byte *writebuf, | |
5653 | ULONGEST offset, LONGEST len, | |
5654 | struct packet_config *packet) | |
5655 | { | |
5656 | int i, buf_len; | |
5657 | ULONGEST n; | |
5658 | gdb_byte *wbuf; | |
5659 | struct remote_state *rs = get_remote_state (); | |
5660 | int max_size = get_memory_write_packet_size (); | |
5661 | ||
5662 | if (packet->support == PACKET_DISABLE) | |
5663 | return -1; | |
5664 | ||
5665 | /* Insert header. */ | |
5666 | i = snprintf (rs->buf, max_size, | |
5667 | "qXfer:%s:write:%s:%s:", | |
5668 | object_name, annex ? annex : "", | |
5669 | phex_nz (offset, sizeof offset)); | |
5670 | max_size -= (i + 1); | |
5671 | ||
5672 | /* Escape as much data as fits into rs->buf. */ | |
5673 | buf_len = remote_escape_output | |
5674 | (writebuf, len, (rs->buf + i), &max_size, max_size); | |
5675 | ||
5676 | if (putpkt_binary (rs->buf, i + buf_len) < 0 | |
5677 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
5678 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
5679 | return -1; | |
5680 | ||
5681 | unpack_varlen_hex (rs->buf, &n); | |
5682 | return n; | |
5683 | } | |
5684 | ||
0876f84a DJ |
5685 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
5686 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
5687 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
5688 | The number of bytes read may be less than LEN without indicating an | |
5689 | EOF. PACKET is checked and updated to indicate whether the remote | |
5690 | target supports this object. */ | |
5691 | ||
5692 | static LONGEST | |
5693 | remote_read_qxfer (struct target_ops *ops, const char *object_name, | |
5694 | const char *annex, | |
5695 | gdb_byte *readbuf, ULONGEST offset, LONGEST len, | |
5696 | struct packet_config *packet) | |
5697 | { | |
5698 | static char *finished_object; | |
5699 | static char *finished_annex; | |
5700 | static ULONGEST finished_offset; | |
5701 | ||
5702 | struct remote_state *rs = get_remote_state (); | |
5703 | unsigned int total = 0; | |
5704 | LONGEST i, n, packet_len; | |
5705 | ||
5706 | if (packet->support == PACKET_DISABLE) | |
5707 | return -1; | |
5708 | ||
5709 | /* Check whether we've cached an end-of-object packet that matches | |
5710 | this request. */ | |
5711 | if (finished_object) | |
5712 | { | |
5713 | if (strcmp (object_name, finished_object) == 0 | |
5714 | && strcmp (annex ? annex : "", finished_annex) == 0 | |
5715 | && offset == finished_offset) | |
5716 | return 0; | |
5717 | ||
5718 | /* Otherwise, we're now reading something different. Discard | |
5719 | the cache. */ | |
5720 | xfree (finished_object); | |
5721 | xfree (finished_annex); | |
5722 | finished_object = NULL; | |
5723 | finished_annex = NULL; | |
5724 | } | |
5725 | ||
5726 | /* Request only enough to fit in a single packet. The actual data | |
5727 | may not, since we don't know how much of it will need to be escaped; | |
5728 | the target is free to respond with slightly less data. We subtract | |
5729 | five to account for the response type and the protocol frame. */ | |
5730 | n = min (get_remote_packet_size () - 5, len); | |
5731 | snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s", | |
5732 | object_name, annex ? annex : "", | |
5733 | phex_nz (offset, sizeof offset), | |
5734 | phex_nz (n, sizeof n)); | |
5735 | i = putpkt (rs->buf); | |
5736 | if (i < 0) | |
5737 | return -1; | |
5738 | ||
5739 | rs->buf[0] = '\0'; | |
5740 | packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
5741 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) | |
5742 | return -1; | |
5743 | ||
5744 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
5745 | error (_("Unknown remote qXfer reply: %s"), rs->buf); | |
5746 | ||
5747 | /* 'm' means there is (or at least might be) more data after this | |
5748 | batch. That does not make sense unless there's at least one byte | |
5749 | of data in this reply. */ | |
5750 | if (rs->buf[0] == 'm' && packet_len == 1) | |
5751 | error (_("Remote qXfer reply contained no data.")); | |
5752 | ||
5753 | /* Got some data. */ | |
5754 | i = remote_unescape_input (rs->buf + 1, packet_len - 1, readbuf, n); | |
5755 | ||
5756 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
5757 | or possibly empty. If we have the final block of a non-empty |
5758 | object, record this fact to bypass a subsequent partial read. */ | |
5759 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a DJ |
5760 | { |
5761 | finished_object = xstrdup (object_name); | |
5762 | finished_annex = xstrdup (annex ? annex : ""); | |
5763 | finished_offset = offset + i; | |
5764 | } | |
5765 | ||
5766 | return i; | |
5767 | } | |
5768 | ||
1e3ff5ad | 5769 | static LONGEST |
4b8a223f | 5770 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
961cb7b5 MK |
5771 | const char *annex, gdb_byte *readbuf, |
5772 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
c906108c | 5773 | { |
d01949b6 | 5774 | struct remote_state *rs = get_remote_state (); |
c906108c | 5775 | int i; |
6d820c5c | 5776 | char *p2; |
1e3ff5ad | 5777 | char query_type; |
c906108c | 5778 | |
b2182ed2 | 5779 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
5780 | if (object == TARGET_OBJECT_MEMORY) |
5781 | { | |
5782 | int xfered; | |
5783 | errno = 0; | |
5784 | ||
5785 | if (writebuf != NULL) | |
b2182ed2 | 5786 | xfered = remote_write_bytes (offset, writebuf, len); |
21e3b9b9 | 5787 | else |
b2182ed2 | 5788 | xfered = remote_read_bytes (offset, readbuf, len); |
21e3b9b9 DJ |
5789 | |
5790 | if (xfered > 0) | |
5791 | return xfered; | |
5792 | else if (xfered == 0 && errno == 0) | |
5793 | return 0; | |
5794 | else | |
5795 | return -1; | |
5796 | } | |
5797 | ||
0e7f50da UW |
5798 | /* Handle SPU memory using qxfer packets. */ |
5799 | if (object == TARGET_OBJECT_SPU) | |
5800 | { | |
5801 | if (readbuf) | |
5802 | return remote_read_qxfer (ops, "spu", annex, readbuf, offset, len, | |
5803 | &remote_protocol_packets | |
5804 | [PACKET_qXfer_spu_read]); | |
5805 | else | |
5806 | return remote_write_qxfer (ops, "spu", annex, writebuf, offset, len, | |
5807 | &remote_protocol_packets | |
5808 | [PACKET_qXfer_spu_write]); | |
5809 | } | |
5810 | ||
a76d924d DJ |
5811 | /* Only handle flash writes. */ |
5812 | if (writebuf != NULL) | |
5813 | { | |
5814 | LONGEST xfered; | |
5815 | ||
5816 | switch (object) | |
5817 | { | |
5818 | case TARGET_OBJECT_FLASH: | |
5819 | xfered = remote_flash_write (ops, offset, len, writebuf); | |
5820 | ||
5821 | if (xfered > 0) | |
5822 | return xfered; | |
5823 | else if (xfered == 0 && errno == 0) | |
5824 | return 0; | |
5825 | else | |
5826 | return -1; | |
5827 | ||
5828 | default: | |
5829 | return -1; | |
5830 | } | |
5831 | } | |
4b8a223f | 5832 | |
1e3ff5ad AC |
5833 | /* Map pre-existing objects onto letters. DO NOT do this for new |
5834 | objects!!! Instead specify new query packets. */ | |
5835 | switch (object) | |
c906108c | 5836 | { |
1e3ff5ad AC |
5837 | case TARGET_OBJECT_AVR: |
5838 | query_type = 'R'; | |
5839 | break; | |
802188a7 RM |
5840 | |
5841 | case TARGET_OBJECT_AUXV: | |
0876f84a DJ |
5842 | gdb_assert (annex == NULL); |
5843 | return remote_read_qxfer (ops, "auxv", annex, readbuf, offset, len, | |
5844 | &remote_protocol_packets[PACKET_qXfer_auxv]); | |
802188a7 | 5845 | |
23181151 DJ |
5846 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
5847 | return remote_read_qxfer | |
5848 | (ops, "features", annex, readbuf, offset, len, | |
5849 | &remote_protocol_packets[PACKET_qXfer_features]); | |
5850 | ||
cfa9d6d9 DJ |
5851 | case TARGET_OBJECT_LIBRARIES: |
5852 | return remote_read_qxfer | |
5853 | (ops, "libraries", annex, readbuf, offset, len, | |
5854 | &remote_protocol_packets[PACKET_qXfer_libraries]); | |
5855 | ||
fd79ecee DJ |
5856 | case TARGET_OBJECT_MEMORY_MAP: |
5857 | gdb_assert (annex == NULL); | |
5858 | return remote_read_qxfer (ops, "memory-map", annex, readbuf, offset, len, | |
5859 | &remote_protocol_packets[PACKET_qXfer_memory_map]); | |
5860 | ||
1e3ff5ad | 5861 | default: |
c906108c SS |
5862 | return -1; |
5863 | } | |
5864 | ||
4b8a223f | 5865 | /* Note: a zero OFFSET and LEN can be used to query the minimum |
1e3ff5ad | 5866 | buffer size. */ |
4b8a223f | 5867 | if (offset == 0 && len == 0) |
ea9c271d DJ |
5868 | return (get_remote_packet_size ()); |
5869 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not | |
24b06219 | 5870 | large enough let the caller deal with it. */ |
ea9c271d | 5871 | if (len < get_remote_packet_size ()) |
1e3ff5ad | 5872 | return -1; |
ea9c271d | 5873 | len = get_remote_packet_size (); |
1e3ff5ad | 5874 | |
23860348 | 5875 | /* Except for querying the minimum buffer size, target must be open. */ |
c5aa993b | 5876 | if (!remote_desc) |
8a3fe4f8 | 5877 | error (_("remote query is only available after target open")); |
c906108c | 5878 | |
1e3ff5ad | 5879 | gdb_assert (annex != NULL); |
4b8a223f | 5880 | gdb_assert (readbuf != NULL); |
c906108c | 5881 | |
6d820c5c | 5882 | p2 = rs->buf; |
c906108c SS |
5883 | *p2++ = 'q'; |
5884 | *p2++ = query_type; | |
5885 | ||
23860348 MS |
5886 | /* We used one buffer char for the remote protocol q command and |
5887 | another for the query type. As the remote protocol encapsulation | |
5888 | uses 4 chars plus one extra in case we are debugging | |
5889 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
5890 | string. */ | |
c906108c | 5891 | i = 0; |
ea9c271d | 5892 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 5893 | { |
1e3ff5ad AC |
5894 | /* Bad caller may have sent forbidden characters. */ |
5895 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
5896 | *p2++ = annex[i]; | |
c906108c SS |
5897 | i++; |
5898 | } | |
1e3ff5ad AC |
5899 | *p2 = '\0'; |
5900 | gdb_assert (annex[i] == '\0'); | |
c906108c | 5901 | |
6d820c5c | 5902 | i = putpkt (rs->buf); |
c5aa993b JM |
5903 | if (i < 0) |
5904 | return i; | |
c906108c | 5905 | |
6d820c5c DJ |
5906 | getpkt (&rs->buf, &rs->buf_size, 0); |
5907 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 5908 | |
cfd77fa1 | 5909 | return strlen ((char *) readbuf); |
c906108c SS |
5910 | } |
5911 | ||
96baa820 JM |
5912 | static void |
5913 | remote_rcmd (char *command, | |
d9fcf2fb | 5914 | struct ui_file *outbuf) |
96baa820 | 5915 | { |
d01949b6 | 5916 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 5917 | char *p = rs->buf; |
96baa820 JM |
5918 | |
5919 | if (!remote_desc) | |
8a3fe4f8 | 5920 | error (_("remote rcmd is only available after target open")); |
96baa820 | 5921 | |
23860348 | 5922 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
5923 | if (command == NULL) |
5924 | command = ""; | |
5925 | ||
23860348 | 5926 | /* The query prefix. */ |
2e9f7625 DJ |
5927 | strcpy (rs->buf, "qRcmd,"); |
5928 | p = strchr (rs->buf, '\0'); | |
96baa820 | 5929 | |
2e9f7625 | 5930 | if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/) > get_remote_packet_size ()) |
8a3fe4f8 | 5931 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 5932 | |
23860348 | 5933 | /* Encode the actual command. */ |
cfd77fa1 | 5934 | bin2hex ((gdb_byte *) command, p, 0); |
96baa820 | 5935 | |
6d820c5c | 5936 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 5937 | error (_("Communication problem with target.")); |
96baa820 JM |
5938 | |
5939 | /* get/display the response */ | |
5940 | while (1) | |
5941 | { | |
2e9f7625 DJ |
5942 | char *buf; |
5943 | ||
23860348 | 5944 | /* XXX - see also tracepoint.c:remote_get_noisy_reply(). */ |
2e9f7625 | 5945 | rs->buf[0] = '\0'; |
6d820c5c | 5946 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 5947 | buf = rs->buf; |
96baa820 | 5948 | if (buf[0] == '\0') |
8a3fe4f8 | 5949 | error (_("Target does not support this command.")); |
96baa820 JM |
5950 | if (buf[0] == 'O' && buf[1] != 'K') |
5951 | { | |
23860348 | 5952 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
5953 | continue; |
5954 | } | |
5955 | if (strcmp (buf, "OK") == 0) | |
5956 | break; | |
7be570e7 JM |
5957 | if (strlen (buf) == 3 && buf[0] == 'E' |
5958 | && isdigit (buf[1]) && isdigit (buf[2])) | |
5959 | { | |
8a3fe4f8 | 5960 | error (_("Protocol error with Rcmd")); |
7be570e7 | 5961 | } |
96baa820 JM |
5962 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
5963 | { | |
5964 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
5965 | fputc_unfiltered (c, outbuf); | |
5966 | } | |
5967 | break; | |
5968 | } | |
5969 | } | |
5970 | ||
fd79ecee DJ |
5971 | static VEC(mem_region_s) * |
5972 | remote_memory_map (struct target_ops *ops) | |
5973 | { | |
5974 | VEC(mem_region_s) *result = NULL; | |
5975 | char *text = target_read_stralloc (¤t_target, | |
5976 | TARGET_OBJECT_MEMORY_MAP, NULL); | |
5977 | ||
5978 | if (text) | |
5979 | { | |
5980 | struct cleanup *back_to = make_cleanup (xfree, text); | |
5981 | result = parse_memory_map (text); | |
5982 | do_cleanups (back_to); | |
5983 | } | |
5984 | ||
5985 | return result; | |
5986 | } | |
5987 | ||
c906108c | 5988 | static void |
fba45db2 | 5989 | packet_command (char *args, int from_tty) |
c906108c | 5990 | { |
d01949b6 | 5991 | struct remote_state *rs = get_remote_state (); |
c906108c | 5992 | |
c5aa993b | 5993 | if (!remote_desc) |
8a3fe4f8 | 5994 | error (_("command can only be used with remote target")); |
c906108c | 5995 | |
c5aa993b | 5996 | if (!args) |
8a3fe4f8 | 5997 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
5998 | |
5999 | puts_filtered ("sending: "); | |
6000 | print_packet (args); | |
6001 | puts_filtered ("\n"); | |
6002 | putpkt (args); | |
6003 | ||
6d820c5c | 6004 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 6005 | puts_filtered ("received: "); |
6d820c5c | 6006 | print_packet (rs->buf); |
c906108c SS |
6007 | puts_filtered ("\n"); |
6008 | } | |
6009 | ||
6010 | #if 0 | |
23860348 | 6011 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 6012 | |
a14ed312 | 6013 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 6014 | |
a14ed312 | 6015 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 6016 | |
a14ed312 | 6017 | static void threadalive_test (char *cmd, int tty); |
c906108c | 6018 | |
a14ed312 | 6019 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 6020 | |
23860348 | 6021 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 6022 | |
a14ed312 | 6023 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 6024 | |
23860348 | 6025 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 6026 | |
a14ed312 | 6027 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 6028 | |
a14ed312 | 6029 | static void init_remote_threadtests (void); |
c906108c | 6030 | |
23860348 | 6031 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
6032 | |
6033 | static void | |
fba45db2 | 6034 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
6035 | { |
6036 | int sample_thread = SAMPLE_THREAD; | |
6037 | ||
a3f17187 | 6038 | printf_filtered (_("Remote threadset test\n")); |
c906108c SS |
6039 | set_thread (sample_thread, 1); |
6040 | } | |
6041 | ||
6042 | ||
6043 | static void | |
fba45db2 | 6044 | threadalive_test (char *cmd, int tty) |
c906108c SS |
6045 | { |
6046 | int sample_thread = SAMPLE_THREAD; | |
6047 | ||
39f77062 | 6048 | if (remote_thread_alive (pid_to_ptid (sample_thread))) |
c906108c SS |
6049 | printf_filtered ("PASS: Thread alive test\n"); |
6050 | else | |
6051 | printf_filtered ("FAIL: Thread alive test\n"); | |
6052 | } | |
6053 | ||
23860348 | 6054 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
6055 | |
6056 | void | |
fba45db2 | 6057 | output_threadid (char *title, threadref *ref) |
c906108c SS |
6058 | { |
6059 | char hexid[20]; | |
6060 | ||
23860348 | 6061 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
6062 | hexid[16] = 0; |
6063 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
6064 | } | |
6065 | ||
6066 | static void | |
fba45db2 | 6067 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
6068 | { |
6069 | int startflag = 1; | |
6070 | threadref nextthread; | |
6071 | int done, result_count; | |
6072 | threadref threadlist[3]; | |
6073 | ||
6074 | printf_filtered ("Remote Threadlist test\n"); | |
6075 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
6076 | &result_count, &threadlist[0])) | |
6077 | printf_filtered ("FAIL: threadlist test\n"); | |
6078 | else | |
6079 | { | |
6080 | threadref *scan = threadlist; | |
6081 | threadref *limit = scan + result_count; | |
6082 | ||
6083 | while (scan < limit) | |
6084 | output_threadid (" thread ", scan++); | |
6085 | } | |
6086 | } | |
6087 | ||
6088 | void | |
fba45db2 | 6089 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
6090 | { |
6091 | output_threadid ("Threadid: ", &info->threadid); | |
6092 | printf_filtered ("Name: %s\n ", info->shortname); | |
6093 | printf_filtered ("State: %s\n", info->display); | |
6094 | printf_filtered ("other: %s\n\n", info->more_display); | |
6095 | } | |
6096 | ||
6097 | int | |
fba45db2 | 6098 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
6099 | { |
6100 | int result; | |
6101 | int set; | |
6102 | struct gdb_ext_thread_info threadinfo; | |
6103 | ||
6104 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
6105 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
6106 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
6107 | display_thread_info (&threadinfo); | |
6108 | return result; | |
6109 | } | |
6110 | ||
6111 | static void | |
fba45db2 | 6112 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
6113 | { |
6114 | int athread = SAMPLE_THREAD; | |
6115 | threadref thread; | |
6116 | int set; | |
6117 | ||
6118 | int_to_threadref (&thread, athread); | |
6119 | printf_filtered ("Remote Threadinfo test\n"); | |
6120 | if (!get_and_display_threadinfo (&thread)) | |
6121 | printf_filtered ("FAIL cannot get thread info\n"); | |
6122 | } | |
6123 | ||
6124 | static int | |
fba45db2 | 6125 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
6126 | { |
6127 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
6128 | return get_and_display_threadinfo (ref); | |
6129 | } | |
6130 | ||
6131 | static void | |
fba45db2 | 6132 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
6133 | { |
6134 | printf_filtered ("Remote Threadlist update test\n"); | |
6135 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
6136 | } | |
6137 | ||
6138 | static void | |
6139 | init_remote_threadtests (void) | |
6140 | { | |
1bedd215 AC |
6141 | add_com ("tlist", class_obscure, threadlist_test_cmd, _("\ |
6142 | Fetch and print the remote list of thread identifiers, one pkt only")); | |
c906108c | 6143 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 6144 | _("Fetch and display info about one thread")); |
c906108c | 6145 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 6146 | _("Test setting to a different thread")); |
c906108c | 6147 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 6148 | _("Iterate through updating all remote thread info")); |
c906108c | 6149 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 6150 | _(" Remote thread alive test ")); |
c906108c SS |
6151 | } |
6152 | ||
6153 | #endif /* 0 */ | |
6154 | ||
f3fb8c85 MS |
6155 | /* Convert a thread ID to a string. Returns the string in a static |
6156 | buffer. */ | |
6157 | ||
6158 | static char * | |
39f77062 | 6159 | remote_pid_to_str (ptid_t ptid) |
f3fb8c85 | 6160 | { |
fd0a2a6f | 6161 | static char buf[32]; |
f3fb8c85 | 6162 | |
32a5b2f1 | 6163 | xsnprintf (buf, sizeof buf, "Thread %d", ptid_get_pid (ptid)); |
f3fb8c85 MS |
6164 | return buf; |
6165 | } | |
6166 | ||
38691318 KB |
6167 | /* Get the address of the thread local variable in OBJFILE which is |
6168 | stored at OFFSET within the thread local storage for thread PTID. */ | |
6169 | ||
6170 | static CORE_ADDR | |
6171 | remote_get_thread_local_address (ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
6172 | { | |
444abaca | 6173 | if (remote_protocol_packets[PACKET_qGetTLSAddr].support != PACKET_DISABLE) |
38691318 KB |
6174 | { |
6175 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 6176 | char *p = rs->buf; |
571dd617 | 6177 | enum packet_result result; |
38691318 KB |
6178 | |
6179 | strcpy (p, "qGetTLSAddr:"); | |
6180 | p += strlen (p); | |
6181 | p += hexnumstr (p, PIDGET (ptid)); | |
6182 | *p++ = ','; | |
6183 | p += hexnumstr (p, offset); | |
6184 | *p++ = ','; | |
6185 | p += hexnumstr (p, lm); | |
6186 | *p++ = '\0'; | |
6187 | ||
6d820c5c DJ |
6188 | putpkt (rs->buf); |
6189 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6190 | result = packet_ok (rs->buf, &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 6191 | if (result == PACKET_OK) |
38691318 KB |
6192 | { |
6193 | ULONGEST result; | |
6194 | ||
6d820c5c | 6195 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
6196 | return result; |
6197 | } | |
571dd617 | 6198 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
6199 | throw_error (TLS_GENERIC_ERROR, |
6200 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 6201 | else |
109c3e39 AC |
6202 | throw_error (TLS_GENERIC_ERROR, |
6203 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
6204 | } |
6205 | else | |
109c3e39 AC |
6206 | throw_error (TLS_GENERIC_ERROR, |
6207 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
6208 | /* Not reached. */ |
6209 | return 0; | |
6210 | } | |
6211 | ||
29709017 DJ |
6212 | /* Support for inferring a target description based on the current |
6213 | architecture and the size of a 'g' packet. While the 'g' packet | |
6214 | can have any size (since optional registers can be left off the | |
6215 | end), some sizes are easily recognizable given knowledge of the | |
6216 | approximate architecture. */ | |
6217 | ||
6218 | struct remote_g_packet_guess | |
6219 | { | |
6220 | int bytes; | |
6221 | const struct target_desc *tdesc; | |
6222 | }; | |
6223 | typedef struct remote_g_packet_guess remote_g_packet_guess_s; | |
6224 | DEF_VEC_O(remote_g_packet_guess_s); | |
6225 | ||
6226 | struct remote_g_packet_data | |
6227 | { | |
6228 | VEC(remote_g_packet_guess_s) *guesses; | |
6229 | }; | |
6230 | ||
6231 | static struct gdbarch_data *remote_g_packet_data_handle; | |
6232 | ||
6233 | static void * | |
6234 | remote_g_packet_data_init (struct obstack *obstack) | |
6235 | { | |
6236 | return OBSTACK_ZALLOC (obstack, struct remote_g_packet_data); | |
6237 | } | |
6238 | ||
6239 | void | |
6240 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
6241 | const struct target_desc *tdesc) | |
6242 | { | |
6243 | struct remote_g_packet_data *data | |
6244 | = gdbarch_data (gdbarch, remote_g_packet_data_handle); | |
6245 | struct remote_g_packet_guess new_guess, *guess; | |
6246 | int ix; | |
6247 | ||
6248 | gdb_assert (tdesc != NULL); | |
6249 | ||
6250 | for (ix = 0; | |
6251 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
6252 | ix++) | |
6253 | if (guess->bytes == bytes) | |
6254 | internal_error (__FILE__, __LINE__, | |
6255 | "Duplicate g packet description added for size %d", | |
6256 | bytes); | |
6257 | ||
6258 | new_guess.bytes = bytes; | |
6259 | new_guess.tdesc = tdesc; | |
6260 | VEC_safe_push (remote_g_packet_guess_s, data->guesses, &new_guess); | |
6261 | } | |
6262 | ||
6263 | static const struct target_desc * | |
6264 | remote_read_description (struct target_ops *target) | |
6265 | { | |
6266 | struct remote_g_packet_data *data | |
6267 | = gdbarch_data (current_gdbarch, remote_g_packet_data_handle); | |
6268 | ||
6269 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) | |
6270 | { | |
6271 | struct remote_g_packet_guess *guess; | |
6272 | int ix; | |
6273 | int bytes = send_g_packet (); | |
6274 | ||
6275 | for (ix = 0; | |
6276 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
6277 | ix++) | |
6278 | if (guess->bytes == bytes) | |
6279 | return guess->tdesc; | |
6280 | ||
6281 | /* We discard the g packet. A minor optimization would be to | |
6282 | hold on to it, and fill the register cache once we have selected | |
6283 | an architecture, but it's too tricky to do safely. */ | |
6284 | } | |
6285 | ||
6286 | return NULL; | |
6287 | } | |
6288 | ||
a6b151f1 DJ |
6289 | /* Remote file transfer support. This is host-initiated I/O, not |
6290 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
6291 | ||
6292 | /* If *LEFT is at least the length of STRING, copy STRING to | |
6293 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
6294 | decrease *LEFT. Otherwise raise an error. */ | |
6295 | ||
6296 | static void | |
6297 | remote_buffer_add_string (char **buffer, int *left, char *string) | |
6298 | { | |
6299 | int len = strlen (string); | |
6300 | ||
6301 | if (len > *left) | |
6302 | error (_("Packet too long for target.")); | |
6303 | ||
6304 | memcpy (*buffer, string, len); | |
6305 | *buffer += len; | |
6306 | *left -= len; | |
6307 | ||
6308 | /* NUL-terminate the buffer as a convenience, if there is | |
6309 | room. */ | |
6310 | if (*left) | |
6311 | **buffer = '\0'; | |
6312 | } | |
6313 | ||
6314 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
6315 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
6316 | decrease *LEFT. Otherwise raise an error. */ | |
6317 | ||
6318 | static void | |
6319 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
6320 | int len) | |
6321 | { | |
6322 | if (2 * len > *left) | |
6323 | error (_("Packet too long for target.")); | |
6324 | ||
6325 | bin2hex (bytes, *buffer, len); | |
6326 | *buffer += 2 * len; | |
6327 | *left -= 2 * len; | |
6328 | ||
6329 | /* NUL-terminate the buffer as a convenience, if there is | |
6330 | room. */ | |
6331 | if (*left) | |
6332 | **buffer = '\0'; | |
6333 | } | |
6334 | ||
6335 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
6336 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
6337 | decrease *LEFT. Otherwise raise an error. */ | |
6338 | ||
6339 | static void | |
6340 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
6341 | { | |
6342 | int len = hexnumlen (value); | |
6343 | ||
6344 | if (len > *left) | |
6345 | error (_("Packet too long for target.")); | |
6346 | ||
6347 | hexnumstr (*buffer, value); | |
6348 | *buffer += len; | |
6349 | *left -= len; | |
6350 | ||
6351 | /* NUL-terminate the buffer as a convenience, if there is | |
6352 | room. */ | |
6353 | if (*left) | |
6354 | **buffer = '\0'; | |
6355 | } | |
6356 | ||
6357 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
6358 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
6359 | was included, and *ATTACHMENT to point to the start of the annex | |
6360 | if any. The length of the packet isn't needed here; there may | |
6361 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
6362 | ||
6363 | Return 0 if the packet could be parsed, -1 if it could not. If | |
6364 | -1 is returned, the other variables may not be initialized. */ | |
6365 | ||
6366 | static int | |
6367 | remote_hostio_parse_result (char *buffer, int *retcode, | |
6368 | int *remote_errno, char **attachment) | |
6369 | { | |
6370 | char *p, *p2; | |
6371 | ||
6372 | *remote_errno = 0; | |
6373 | *attachment = NULL; | |
6374 | ||
6375 | if (buffer[0] != 'F') | |
6376 | return -1; | |
6377 | ||
6378 | errno = 0; | |
6379 | *retcode = strtol (&buffer[1], &p, 16); | |
6380 | if (errno != 0 || p == &buffer[1]) | |
6381 | return -1; | |
6382 | ||
6383 | /* Check for ",errno". */ | |
6384 | if (*p == ',') | |
6385 | { | |
6386 | errno = 0; | |
6387 | *remote_errno = strtol (p + 1, &p2, 16); | |
6388 | if (errno != 0 || p + 1 == p2) | |
6389 | return -1; | |
6390 | p = p2; | |
6391 | } | |
6392 | ||
6393 | /* Check for ";attachment". If there is no attachment, the | |
6394 | packet should end here. */ | |
6395 | if (*p == ';') | |
6396 | { | |
6397 | *attachment = p + 1; | |
6398 | return 0; | |
6399 | } | |
6400 | else if (*p == '\0') | |
6401 | return 0; | |
6402 | else | |
6403 | return -1; | |
6404 | } | |
6405 | ||
6406 | /* Send a prepared I/O packet to the target and read its response. | |
6407 | The prepared packet is in the global RS->BUF before this function | |
6408 | is called, and the answer is there when we return. | |
6409 | ||
6410 | COMMAND_BYTES is the length of the request to send, which may include | |
6411 | binary data. WHICH_PACKET is the packet configuration to check | |
6412 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
6413 | is set to the error number and -1 is returned. Otherwise the value | |
6414 | returned by the function is returned. | |
6415 | ||
6416 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
6417 | attachment is expected; an error will be reported if there's a | |
6418 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
6419 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
6420 | attachment's length. */ | |
6421 | ||
6422 | static int | |
6423 | remote_hostio_send_command (int command_bytes, int which_packet, | |
6424 | int *remote_errno, char **attachment, | |
6425 | int *attachment_len) | |
6426 | { | |
6427 | struct remote_state *rs = get_remote_state (); | |
6428 | int ret, bytes_read; | |
6429 | char *attachment_tmp; | |
6430 | ||
6431 | if (remote_protocol_packets[which_packet].support == PACKET_DISABLE) | |
6432 | { | |
6433 | *remote_errno = FILEIO_ENOSYS; | |
6434 | return -1; | |
6435 | } | |
6436 | ||
6437 | putpkt_binary (rs->buf, command_bytes); | |
6438 | bytes_read = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
6439 | ||
6440 | /* If it timed out, something is wrong. Don't try to parse the | |
6441 | buffer. */ | |
6442 | if (bytes_read < 0) | |
6443 | { | |
6444 | *remote_errno = FILEIO_EINVAL; | |
6445 | return -1; | |
6446 | } | |
6447 | ||
6448 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
6449 | { | |
6450 | case PACKET_ERROR: | |
6451 | *remote_errno = FILEIO_EINVAL; | |
6452 | return -1; | |
6453 | case PACKET_UNKNOWN: | |
6454 | *remote_errno = FILEIO_ENOSYS; | |
6455 | return -1; | |
6456 | case PACKET_OK: | |
6457 | break; | |
6458 | } | |
6459 | ||
6460 | if (remote_hostio_parse_result (rs->buf, &ret, remote_errno, | |
6461 | &attachment_tmp)) | |
6462 | { | |
6463 | *remote_errno = FILEIO_EINVAL; | |
6464 | return -1; | |
6465 | } | |
6466 | ||
6467 | /* Make sure we saw an attachment if and only if we expected one. */ | |
6468 | if ((attachment_tmp == NULL && attachment != NULL) | |
6469 | || (attachment_tmp != NULL && attachment == NULL)) | |
6470 | { | |
6471 | *remote_errno = FILEIO_EINVAL; | |
6472 | return -1; | |
6473 | } | |
6474 | ||
6475 | /* If an attachment was found, it must point into the packet buffer; | |
6476 | work out how many bytes there were. */ | |
6477 | if (attachment_tmp != NULL) | |
6478 | { | |
6479 | *attachment = attachment_tmp; | |
6480 | *attachment_len = bytes_read - (*attachment - rs->buf); | |
6481 | } | |
6482 | ||
6483 | return ret; | |
6484 | } | |
6485 | ||
6486 | /* Open FILENAME on the remote target, using FLAGS and MODE. Return a | |
6487 | remote file descriptor, or -1 if an error occurs (and set | |
6488 | *REMOTE_ERRNO). */ | |
6489 | ||
6490 | static int | |
6491 | remote_hostio_open (const char *filename, int flags, int mode, | |
6492 | int *remote_errno) | |
6493 | { | |
6494 | struct remote_state *rs = get_remote_state (); | |
6495 | char *p = rs->buf; | |
6496 | int left = get_remote_packet_size () - 1; | |
6497 | ||
6498 | remote_buffer_add_string (&p, &left, "vFile:open:"); | |
6499 | ||
6500 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
6501 | strlen (filename)); | |
6502 | remote_buffer_add_string (&p, &left, ","); | |
6503 | ||
6504 | remote_buffer_add_int (&p, &left, flags); | |
6505 | remote_buffer_add_string (&p, &left, ","); | |
6506 | ||
6507 | remote_buffer_add_int (&p, &left, mode); | |
6508 | ||
6509 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_open, | |
6510 | remote_errno, NULL, NULL); | |
6511 | } | |
6512 | ||
6513 | /* Write up to LEN bytes from WRITE_BUF to FD on the remote target. | |
6514 | Return the number of bytes written, or -1 if an error occurs (and | |
6515 | set *REMOTE_ERRNO). */ | |
6516 | ||
6517 | static int | |
6518 | remote_hostio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
6519 | ULONGEST offset, int *remote_errno) | |
6520 | { | |
6521 | struct remote_state *rs = get_remote_state (); | |
6522 | char *p = rs->buf; | |
6523 | int left = get_remote_packet_size (); | |
6524 | int out_len; | |
6525 | ||
6526 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); | |
6527 | ||
6528 | remote_buffer_add_int (&p, &left, fd); | |
6529 | remote_buffer_add_string (&p, &left, ","); | |
6530 | ||
6531 | remote_buffer_add_int (&p, &left, offset); | |
6532 | remote_buffer_add_string (&p, &left, ","); | |
6533 | ||
6534 | p += remote_escape_output (write_buf, len, p, &out_len, | |
6535 | get_remote_packet_size () - (p - rs->buf)); | |
6536 | ||
6537 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_pwrite, | |
6538 | remote_errno, NULL, NULL); | |
6539 | } | |
6540 | ||
6541 | /* Read up to LEN bytes FD on the remote target into READ_BUF | |
6542 | Return the number of bytes read, or -1 if an error occurs (and | |
6543 | set *REMOTE_ERRNO). */ | |
6544 | ||
6545 | static int | |
6546 | remote_hostio_pread (int fd, gdb_byte *read_buf, int len, | |
6547 | ULONGEST offset, int *remote_errno) | |
6548 | { | |
6549 | struct remote_state *rs = get_remote_state (); | |
6550 | char *p = rs->buf; | |
6551 | char *attachment; | |
6552 | int left = get_remote_packet_size (); | |
6553 | int ret, attachment_len; | |
6554 | int read_len; | |
6555 | ||
6556 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
6557 | ||
6558 | remote_buffer_add_int (&p, &left, fd); | |
6559 | remote_buffer_add_string (&p, &left, ","); | |
6560 | ||
6561 | remote_buffer_add_int (&p, &left, len); | |
6562 | remote_buffer_add_string (&p, &left, ","); | |
6563 | ||
6564 | remote_buffer_add_int (&p, &left, offset); | |
6565 | ||
6566 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_pread, | |
6567 | remote_errno, &attachment, | |
6568 | &attachment_len); | |
6569 | ||
6570 | if (ret < 0) | |
6571 | return ret; | |
6572 | ||
6573 | read_len = remote_unescape_input (attachment, attachment_len, | |
6574 | read_buf, len); | |
6575 | if (read_len != ret) | |
6576 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
6577 | ||
6578 | return ret; | |
6579 | } | |
6580 | ||
6581 | /* Close FD on the remote target. Return 0, or -1 if an error occurs | |
6582 | (and set *REMOTE_ERRNO). */ | |
6583 | ||
6584 | static int | |
6585 | remote_hostio_close (int fd, int *remote_errno) | |
6586 | { | |
6587 | struct remote_state *rs = get_remote_state (); | |
6588 | char *p = rs->buf; | |
6589 | int left = get_remote_packet_size () - 1; | |
6590 | ||
6591 | remote_buffer_add_string (&p, &left, "vFile:close:"); | |
6592 | ||
6593 | remote_buffer_add_int (&p, &left, fd); | |
6594 | ||
6595 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_close, | |
6596 | remote_errno, NULL, NULL); | |
6597 | } | |
6598 | ||
6599 | /* Unlink FILENAME on the remote target. Return 0, or -1 if an error | |
6600 | occurs (and set *REMOTE_ERRNO). */ | |
6601 | ||
6602 | static int | |
6603 | remote_hostio_unlink (const char *filename, int *remote_errno) | |
6604 | { | |
6605 | struct remote_state *rs = get_remote_state (); | |
6606 | char *p = rs->buf; | |
6607 | int left = get_remote_packet_size () - 1; | |
6608 | ||
6609 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); | |
6610 | ||
6611 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
6612 | strlen (filename)); | |
6613 | ||
6614 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_unlink, | |
6615 | remote_errno, NULL, NULL); | |
6616 | } | |
6617 | ||
6618 | static int | |
6619 | remote_fileio_errno_to_host (int errnum) | |
6620 | { | |
6621 | switch (errnum) | |
6622 | { | |
6623 | case FILEIO_EPERM: | |
6624 | return EPERM; | |
6625 | case FILEIO_ENOENT: | |
6626 | return ENOENT; | |
6627 | case FILEIO_EINTR: | |
6628 | return EINTR; | |
6629 | case FILEIO_EIO: | |
6630 | return EIO; | |
6631 | case FILEIO_EBADF: | |
6632 | return EBADF; | |
6633 | case FILEIO_EACCES: | |
6634 | return EACCES; | |
6635 | case FILEIO_EFAULT: | |
6636 | return EFAULT; | |
6637 | case FILEIO_EBUSY: | |
6638 | return EBUSY; | |
6639 | case FILEIO_EEXIST: | |
6640 | return EEXIST; | |
6641 | case FILEIO_ENODEV: | |
6642 | return ENODEV; | |
6643 | case FILEIO_ENOTDIR: | |
6644 | return ENOTDIR; | |
6645 | case FILEIO_EISDIR: | |
6646 | return EISDIR; | |
6647 | case FILEIO_EINVAL: | |
6648 | return EINVAL; | |
6649 | case FILEIO_ENFILE: | |
6650 | return ENFILE; | |
6651 | case FILEIO_EMFILE: | |
6652 | return EMFILE; | |
6653 | case FILEIO_EFBIG: | |
6654 | return EFBIG; | |
6655 | case FILEIO_ENOSPC: | |
6656 | return ENOSPC; | |
6657 | case FILEIO_ESPIPE: | |
6658 | return ESPIPE; | |
6659 | case FILEIO_EROFS: | |
6660 | return EROFS; | |
6661 | case FILEIO_ENOSYS: | |
6662 | return ENOSYS; | |
6663 | case FILEIO_ENAMETOOLONG: | |
6664 | return ENAMETOOLONG; | |
6665 | } | |
6666 | return -1; | |
6667 | } | |
6668 | ||
6669 | static char * | |
6670 | remote_hostio_error (int errnum) | |
6671 | { | |
6672 | int host_error = remote_fileio_errno_to_host (errnum); | |
6673 | ||
6674 | if (host_error == -1) | |
6675 | error (_("Unknown remote I/O error %d"), errnum); | |
6676 | else | |
6677 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
6678 | } | |
6679 | ||
6680 | static void | |
6681 | fclose_cleanup (void *file) | |
6682 | { | |
6683 | fclose (file); | |
6684 | } | |
6685 | ||
6686 | static void | |
6687 | remote_hostio_close_cleanup (void *opaque) | |
6688 | { | |
6689 | int fd = *(int *) opaque; | |
6690 | int remote_errno; | |
6691 | ||
6692 | remote_hostio_close (fd, &remote_errno); | |
6693 | } | |
6694 | ||
6695 | void | |
6696 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
6697 | { | |
6698 | struct cleanup *back_to, *close_cleanup; | |
6699 | int retcode, fd, remote_errno, bytes, io_size; | |
6700 | FILE *file; | |
6701 | gdb_byte *buffer; | |
6702 | int bytes_in_buffer; | |
6703 | int saw_eof; | |
6704 | ULONGEST offset; | |
6705 | ||
6706 | if (!remote_desc) | |
6707 | error (_("command can only be used with remote target")); | |
6708 | ||
6709 | file = fopen (local_file, "rb"); | |
6710 | if (file == NULL) | |
6711 | perror_with_name (local_file); | |
6712 | back_to = make_cleanup (fclose_cleanup, file); | |
6713 | ||
6714 | fd = remote_hostio_open (remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT | |
6715 | | FILEIO_O_TRUNC), | |
6716 | 0700, &remote_errno); | |
6717 | if (fd == -1) | |
6718 | remote_hostio_error (remote_errno); | |
6719 | ||
6720 | /* Send up to this many bytes at once. They won't all fit in the | |
6721 | remote packet limit, so we'll transfer slightly fewer. */ | |
6722 | io_size = get_remote_packet_size (); | |
6723 | buffer = xmalloc (io_size); | |
6724 | make_cleanup (xfree, buffer); | |
6725 | ||
6726 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
6727 | ||
6728 | bytes_in_buffer = 0; | |
6729 | saw_eof = 0; | |
6730 | offset = 0; | |
6731 | while (bytes_in_buffer || !saw_eof) | |
6732 | { | |
6733 | if (!saw_eof) | |
6734 | { | |
6735 | bytes = fread (buffer + bytes_in_buffer, 1, io_size - bytes_in_buffer, | |
6736 | file); | |
6737 | if (bytes == 0) | |
6738 | { | |
6739 | if (ferror (file)) | |
6740 | error (_("Error reading %s."), local_file); | |
6741 | else | |
6742 | { | |
6743 | /* EOF. Unless there is something still in the | |
6744 | buffer from the last iteration, we are done. */ | |
6745 | saw_eof = 1; | |
6746 | if (bytes_in_buffer == 0) | |
6747 | break; | |
6748 | } | |
6749 | } | |
6750 | } | |
6751 | else | |
6752 | bytes = 0; | |
6753 | ||
6754 | bytes += bytes_in_buffer; | |
6755 | bytes_in_buffer = 0; | |
6756 | ||
6757 | retcode = remote_hostio_pwrite (fd, buffer, bytes, offset, &remote_errno); | |
6758 | ||
6759 | if (retcode < 0) | |
6760 | remote_hostio_error (remote_errno); | |
6761 | else if (retcode == 0) | |
6762 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
6763 | else if (retcode < bytes) | |
6764 | { | |
6765 | /* Short write. Save the rest of the read data for the next | |
6766 | write. */ | |
6767 | bytes_in_buffer = bytes - retcode; | |
6768 | memmove (buffer, buffer + retcode, bytes_in_buffer); | |
6769 | } | |
6770 | ||
6771 | offset += retcode; | |
6772 | } | |
6773 | ||
6774 | discard_cleanups (close_cleanup); | |
6775 | if (remote_hostio_close (fd, &remote_errno)) | |
6776 | remote_hostio_error (remote_errno); | |
6777 | ||
6778 | if (from_tty) | |
6779 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
6780 | do_cleanups (back_to); | |
6781 | } | |
6782 | ||
6783 | void | |
6784 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
6785 | { | |
6786 | struct cleanup *back_to, *close_cleanup; | |
6787 | int retcode, fd, remote_errno, bytes, io_size; | |
6788 | FILE *file; | |
6789 | gdb_byte *buffer; | |
6790 | ULONGEST offset; | |
6791 | ||
6792 | if (!remote_desc) | |
6793 | error (_("command can only be used with remote target")); | |
6794 | ||
6795 | fd = remote_hostio_open (remote_file, FILEIO_O_RDONLY, 0, &remote_errno); | |
6796 | if (fd == -1) | |
6797 | remote_hostio_error (remote_errno); | |
6798 | ||
6799 | file = fopen (local_file, "wb"); | |
6800 | if (file == NULL) | |
6801 | perror_with_name (local_file); | |
6802 | back_to = make_cleanup (fclose_cleanup, file); | |
6803 | ||
6804 | /* Send up to this many bytes at once. They won't all fit in the | |
6805 | remote packet limit, so we'll transfer slightly fewer. */ | |
6806 | io_size = get_remote_packet_size (); | |
6807 | buffer = xmalloc (io_size); | |
6808 | make_cleanup (xfree, buffer); | |
6809 | ||
6810 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
6811 | ||
6812 | offset = 0; | |
6813 | while (1) | |
6814 | { | |
6815 | bytes = remote_hostio_pread (fd, buffer, io_size, offset, &remote_errno); | |
6816 | if (bytes == 0) | |
6817 | /* Success, but no bytes, means end-of-file. */ | |
6818 | break; | |
6819 | if (bytes == -1) | |
6820 | remote_hostio_error (remote_errno); | |
6821 | ||
6822 | offset += bytes; | |
6823 | ||
6824 | bytes = fwrite (buffer, 1, bytes, file); | |
6825 | if (bytes == 0) | |
6826 | perror_with_name (local_file); | |
6827 | } | |
6828 | ||
6829 | discard_cleanups (close_cleanup); | |
6830 | if (remote_hostio_close (fd, &remote_errno)) | |
6831 | remote_hostio_error (remote_errno); | |
6832 | ||
6833 | if (from_tty) | |
6834 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
6835 | do_cleanups (back_to); | |
6836 | } | |
6837 | ||
6838 | void | |
6839 | remote_file_delete (const char *remote_file, int from_tty) | |
6840 | { | |
6841 | int retcode, remote_errno; | |
6842 | ||
6843 | if (!remote_desc) | |
6844 | error (_("command can only be used with remote target")); | |
6845 | ||
6846 | retcode = remote_hostio_unlink (remote_file, &remote_errno); | |
6847 | if (retcode == -1) | |
6848 | remote_hostio_error (remote_errno); | |
6849 | ||
6850 | if (from_tty) | |
6851 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
6852 | } | |
6853 | ||
6854 | static void | |
6855 | remote_put_command (char *args, int from_tty) | |
6856 | { | |
6857 | struct cleanup *back_to; | |
6858 | char **argv; | |
6859 | ||
6860 | argv = buildargv (args); | |
6861 | if (argv == NULL) | |
6862 | nomem (0); | |
6863 | back_to = make_cleanup_freeargv (argv); | |
6864 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
6865 | error (_("Invalid parameters to remote put")); | |
6866 | ||
6867 | remote_file_put (argv[0], argv[1], from_tty); | |
6868 | ||
6869 | do_cleanups (back_to); | |
6870 | } | |
6871 | ||
6872 | static void | |
6873 | remote_get_command (char *args, int from_tty) | |
6874 | { | |
6875 | struct cleanup *back_to; | |
6876 | char **argv; | |
6877 | ||
6878 | argv = buildargv (args); | |
6879 | if (argv == NULL) | |
6880 | nomem (0); | |
6881 | back_to = make_cleanup_freeargv (argv); | |
6882 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
6883 | error (_("Invalid parameters to remote get")); | |
6884 | ||
6885 | remote_file_get (argv[0], argv[1], from_tty); | |
6886 | ||
6887 | do_cleanups (back_to); | |
6888 | } | |
6889 | ||
6890 | static void | |
6891 | remote_delete_command (char *args, int from_tty) | |
6892 | { | |
6893 | struct cleanup *back_to; | |
6894 | char **argv; | |
6895 | ||
6896 | argv = buildargv (args); | |
6897 | if (argv == NULL) | |
6898 | nomem (0); | |
6899 | back_to = make_cleanup_freeargv (argv); | |
6900 | if (argv[0] == NULL || argv[1] != NULL) | |
6901 | error (_("Invalid parameters to remote delete")); | |
6902 | ||
6903 | remote_file_delete (argv[0], from_tty); | |
6904 | ||
6905 | do_cleanups (back_to); | |
6906 | } | |
6907 | ||
6908 | static void | |
6909 | remote_command (char *args, int from_tty) | |
6910 | { | |
6911 | help_list (remote_cmdlist, "remote ", -1, gdb_stdout); | |
6912 | } | |
6913 | ||
c906108c | 6914 | static void |
fba45db2 | 6915 | init_remote_ops (void) |
c906108c | 6916 | { |
c5aa993b | 6917 | remote_ops.to_shortname = "remote"; |
c906108c | 6918 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 6919 | remote_ops.to_doc = |
c906108c | 6920 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
6921 | Specify the serial device it is connected to\n\ |
6922 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
6923 | remote_ops.to_open = remote_open; |
6924 | remote_ops.to_close = remote_close; | |
c906108c | 6925 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 6926 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 6927 | remote_ops.to_resume = remote_resume; |
c906108c SS |
6928 | remote_ops.to_wait = remote_wait; |
6929 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
6930 | remote_ops.to_store_registers = remote_store_registers; | |
6931 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 6932 | remote_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 6933 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
6934 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
6935 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
6936 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
6937 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
6938 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; | |
6939 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
6940 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
6941 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
6942 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b JM |
6943 | remote_ops.to_kill = remote_kill; |
6944 | remote_ops.to_load = generic_load; | |
c906108c SS |
6945 | remote_ops.to_mourn_inferior = remote_mourn; |
6946 | remote_ops.to_thread_alive = remote_thread_alive; | |
0f71a2f6 | 6947 | remote_ops.to_find_new_threads = remote_threads_info; |
0caabb7e | 6948 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 6949 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
c906108c | 6950 | remote_ops.to_stop = remote_stop; |
4b8a223f | 6951 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 6952 | remote_ops.to_rcmd = remote_rcmd; |
49d03eab | 6953 | remote_ops.to_log_command = serial_log_command; |
38691318 | 6954 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; |
c906108c | 6955 | remote_ops.to_stratum = process_stratum; |
c5aa993b JM |
6956 | remote_ops.to_has_all_memory = 1; |
6957 | remote_ops.to_has_memory = 1; | |
6958 | remote_ops.to_has_stack = 1; | |
6959 | remote_ops.to_has_registers = 1; | |
6960 | remote_ops.to_has_execution = 1; | |
6961 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
6962 | remote_ops.to_magic = OPS_MAGIC; | |
fd79ecee | 6963 | remote_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
6964 | remote_ops.to_flash_erase = remote_flash_erase; |
6965 | remote_ops.to_flash_done = remote_flash_done; | |
29709017 | 6966 | remote_ops.to_read_description = remote_read_description; |
c906108c SS |
6967 | } |
6968 | ||
6969 | /* Set up the extended remote vector by making a copy of the standard | |
6970 | remote vector and adding to it. */ | |
6971 | ||
6972 | static void | |
fba45db2 | 6973 | init_extended_remote_ops (void) |
c906108c SS |
6974 | { |
6975 | extended_remote_ops = remote_ops; | |
6976 | ||
0f71a2f6 | 6977 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 6978 | extended_remote_ops.to_longname = |
c906108c | 6979 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 6980 | extended_remote_ops.to_doc = |
c906108c SS |
6981 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
6982 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 6983 | extended_remote_ops.to_open = extended_remote_open; |
c906108c SS |
6984 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
6985 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
0f71a2f6 JM |
6986 | } |
6987 | ||
6426a772 JM |
6988 | static int |
6989 | remote_can_async_p (void) | |
6990 | { | |
23860348 | 6991 | /* We're async whenever the serial device is. */ |
2cd58942 | 6992 | return (current_target.to_async_mask_value) && serial_can_async_p (remote_desc); |
6426a772 JM |
6993 | } |
6994 | ||
6995 | static int | |
6996 | remote_is_async_p (void) | |
6997 | { | |
23860348 | 6998 | /* We're async whenever the serial device is. */ |
2cd58942 | 6999 | return (current_target.to_async_mask_value) && serial_is_async_p (remote_desc); |
6426a772 JM |
7000 | } |
7001 | ||
2acceee2 JM |
7002 | /* Pass the SERIAL event on and up to the client. One day this code |
7003 | will be able to delay notifying the client of an event until the | |
23860348 | 7004 | point where an entire packet has been received. */ |
2acceee2 | 7005 | |
2bc416ba | 7006 | static void (*async_client_callback) (enum inferior_event_type event_type, |
23860348 | 7007 | void *context); |
2acceee2 JM |
7008 | static void *async_client_context; |
7009 | static serial_event_ftype remote_async_serial_handler; | |
7010 | ||
6426a772 | 7011 | static void |
819cc324 | 7012 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 7013 | { |
2acceee2 JM |
7014 | /* Don't propogate error information up to the client. Instead let |
7015 | the client find out about the error by querying the target. */ | |
7016 | async_client_callback (INF_REG_EVENT, async_client_context); | |
7017 | } | |
7018 | ||
7019 | static void | |
2bc416ba | 7020 | remote_async (void (*callback) (enum inferior_event_type event_type, |
23860348 | 7021 | void *context), void *context) |
2acceee2 | 7022 | { |
ed9a39eb | 7023 | if (current_target.to_async_mask_value == 0) |
8e65ff28 | 7024 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 7025 | _("Calling remote_async when async is masked")); |
ed9a39eb | 7026 | |
2acceee2 JM |
7027 | if (callback != NULL) |
7028 | { | |
2cd58942 | 7029 | serial_async (remote_desc, remote_async_serial_handler, NULL); |
2acceee2 JM |
7030 | async_client_callback = callback; |
7031 | async_client_context = context; | |
7032 | } | |
7033 | else | |
2cd58942 | 7034 | serial_async (remote_desc, NULL, NULL); |
6426a772 JM |
7035 | } |
7036 | ||
43ff13b4 JM |
7037 | /* Target async and target extended-async. |
7038 | ||
7039 | This are temporary targets, until it is all tested. Eventually | |
7040 | async support will be incorporated int the usual 'remote' | |
23860348 | 7041 | target. */ |
43ff13b4 JM |
7042 | |
7043 | static void | |
c2d11a7d | 7044 | init_remote_async_ops (void) |
43ff13b4 JM |
7045 | { |
7046 | remote_async_ops.to_shortname = "async"; | |
2bc416ba | 7047 | remote_async_ops.to_longname = |
23860348 | 7048 | "Remote serial target in async version of the gdb-specific protocol"; |
c5aa993b | 7049 | remote_async_ops.to_doc = |
43ff13b4 JM |
7050 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
7051 | Specify the serial device it is connected to (e.g. /dev/ttya)."; | |
c5aa993b JM |
7052 | remote_async_ops.to_open = remote_async_open; |
7053 | remote_async_ops.to_close = remote_close; | |
6ad8ae5c DJ |
7054 | remote_async_ops.to_detach = remote_detach; |
7055 | remote_async_ops.to_disconnect = remote_disconnect; | |
c5aa993b JM |
7056 | remote_async_ops.to_resume = remote_async_resume; |
7057 | remote_async_ops.to_wait = remote_async_wait; | |
7058 | remote_async_ops.to_fetch_registers = remote_fetch_registers; | |
7059 | remote_async_ops.to_store_registers = remote_store_registers; | |
7060 | remote_async_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 7061 | remote_async_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 7062 | remote_async_ops.to_files_info = remote_files_info; |
43ff13b4 JM |
7063 | remote_async_ops.to_insert_breakpoint = remote_insert_breakpoint; |
7064 | remote_async_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
7065 | remote_async_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
7066 | remote_async_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
7067 | remote_async_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
7068 | remote_async_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
7069 | remote_async_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
7070 | remote_async_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; | |
7071 | remote_async_ops.to_stopped_data_address = remote_stopped_data_address; | |
6426a772 JM |
7072 | remote_async_ops.to_terminal_inferior = remote_async_terminal_inferior; |
7073 | remote_async_ops.to_terminal_ours = remote_async_terminal_ours; | |
c5aa993b JM |
7074 | remote_async_ops.to_kill = remote_async_kill; |
7075 | remote_async_ops.to_load = generic_load; | |
53a5351d | 7076 | remote_async_ops.to_mourn_inferior = remote_async_mourn; |
c5aa993b JM |
7077 | remote_async_ops.to_thread_alive = remote_thread_alive; |
7078 | remote_async_ops.to_find_new_threads = remote_threads_info; | |
cf759d3b ND |
7079 | remote_async_ops.to_pid_to_str = remote_pid_to_str; |
7080 | remote_async_ops.to_extra_thread_info = remote_threads_extra_info; | |
43ff13b4 | 7081 | remote_async_ops.to_stop = remote_stop; |
4b8a223f | 7082 | remote_async_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 7083 | remote_async_ops.to_rcmd = remote_rcmd; |
c5aa993b JM |
7084 | remote_async_ops.to_stratum = process_stratum; |
7085 | remote_async_ops.to_has_all_memory = 1; | |
7086 | remote_async_ops.to_has_memory = 1; | |
7087 | remote_async_ops.to_has_stack = 1; | |
7088 | remote_async_ops.to_has_registers = 1; | |
7089 | remote_async_ops.to_has_execution = 1; | |
7090 | remote_async_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
6426a772 JM |
7091 | remote_async_ops.to_can_async_p = remote_can_async_p; |
7092 | remote_async_ops.to_is_async_p = remote_is_async_p; | |
7093 | remote_async_ops.to_async = remote_async; | |
ed9a39eb | 7094 | remote_async_ops.to_async_mask_value = 1; |
c5aa993b | 7095 | remote_async_ops.to_magic = OPS_MAGIC; |
fd79ecee | 7096 | remote_async_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
7097 | remote_async_ops.to_flash_erase = remote_flash_erase; |
7098 | remote_async_ops.to_flash_done = remote_flash_done; | |
cfa9d6d9 | 7099 | remote_async_ops.to_read_description = remote_read_description; |
43ff13b4 JM |
7100 | } |
7101 | ||
7102 | /* Set up the async extended remote vector by making a copy of the standard | |
7103 | remote vector and adding to it. */ | |
7104 | ||
7105 | static void | |
c2d11a7d | 7106 | init_extended_async_remote_ops (void) |
43ff13b4 JM |
7107 | { |
7108 | extended_async_remote_ops = remote_async_ops; | |
7109 | ||
7110 | extended_async_remote_ops.to_shortname = "extended-async"; | |
c5aa993b | 7111 | extended_async_remote_ops.to_longname = |
43ff13b4 | 7112 | "Extended remote serial target in async gdb-specific protocol"; |
c5aa993b | 7113 | extended_async_remote_ops.to_doc = |
43ff13b4 JM |
7114 | "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\ |
7115 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 7116 | extended_async_remote_ops.to_open = extended_remote_async_open; |
43ff13b4 JM |
7117 | extended_async_remote_ops.to_create_inferior = extended_remote_async_create_inferior; |
7118 | extended_async_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
7119 | } | |
7120 | ||
5a2468f5 | 7121 | static void |
c2d11a7d | 7122 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 7123 | { |
427c3a89 | 7124 | help_list (remote_set_cmdlist, "set remote ", -1, gdb_stdout); |
5a2468f5 JM |
7125 | } |
7126 | ||
d471ea57 AC |
7127 | static void |
7128 | show_remote_cmd (char *args, int from_tty) | |
7129 | { | |
37a105a1 | 7130 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 7131 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 DJ |
7132 | struct cleanup *showlist_chain; |
7133 | struct cmd_list_element *list = remote_show_cmdlist; | |
7134 | ||
7135 | showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist"); | |
7136 | for (; list != NULL; list = list->next) | |
7137 | if (strcmp (list->name, "Z-packet") == 0) | |
7138 | continue; | |
427c3a89 DJ |
7139 | else if (list->type == not_set_cmd) |
7140 | /* Alias commands are exactly like the original, except they | |
7141 | don't have the normal type. */ | |
7142 | continue; | |
7143 | else | |
37a105a1 DJ |
7144 | { |
7145 | struct cleanup *option_chain | |
7146 | = make_cleanup_ui_out_tuple_begin_end (uiout, "option"); | |
7147 | ui_out_field_string (uiout, "name", list->name); | |
7148 | ui_out_text (uiout, ": "); | |
427c3a89 DJ |
7149 | if (list->type == show_cmd) |
7150 | do_setshow_command ((char *) NULL, from_tty, list); | |
7151 | else | |
7152 | cmd_func (list, NULL, from_tty); | |
37a105a1 DJ |
7153 | /* Close the tuple. */ |
7154 | do_cleanups (option_chain); | |
7155 | } | |
427c3a89 DJ |
7156 | |
7157 | /* Close the tuple. */ | |
7158 | do_cleanups (showlist_chain); | |
d471ea57 | 7159 | } |
5a2468f5 | 7160 | |
0f71a2f6 | 7161 | |
23860348 | 7162 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
7163 | static void |
7164 | remote_new_objfile (struct objfile *objfile) | |
7165 | { | |
23860348 | 7166 | if (remote_desc != 0) /* Have a remote connection. */ |
06d3b283 | 7167 | remote_check_symbols (objfile); |
dc8acb97 MS |
7168 | } |
7169 | ||
c906108c | 7170 | void |
fba45db2 | 7171 | _initialize_remote (void) |
c906108c | 7172 | { |
ea9c271d DJ |
7173 | struct remote_state *rs; |
7174 | ||
0f71a2f6 | 7175 | /* architecture specific data */ |
2bc416ba | 7176 | remote_gdbarch_data_handle = |
23860348 | 7177 | gdbarch_data_register_post_init (init_remote_state); |
29709017 DJ |
7178 | remote_g_packet_data_handle = |
7179 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 7180 | |
ea9c271d DJ |
7181 | /* Initialize the per-target state. At the moment there is only one |
7182 | of these, not one per target. Only one target is active at a | |
7183 | time. The default buffer size is unimportant; it will be expanded | |
7184 | whenever a larger buffer is needed. */ | |
0b83947e | 7185 | rs = get_remote_state_raw (); |
ea9c271d DJ |
7186 | rs->buf_size = 400; |
7187 | rs->buf = xmalloc (rs->buf_size); | |
7188 | ||
c906108c SS |
7189 | init_remote_ops (); |
7190 | add_target (&remote_ops); | |
7191 | ||
7192 | init_extended_remote_ops (); | |
7193 | add_target (&extended_remote_ops); | |
cce74817 | 7194 | |
43ff13b4 JM |
7195 | init_remote_async_ops (); |
7196 | add_target (&remote_async_ops); | |
7197 | ||
7198 | init_extended_async_remote_ops (); | |
7199 | add_target (&extended_async_remote_ops); | |
7200 | ||
dc8acb97 | 7201 | /* Hook into new objfile notification. */ |
06d3b283 | 7202 | observer_attach_new_objfile (remote_new_objfile); |
dc8acb97 | 7203 | |
c906108c SS |
7204 | #if 0 |
7205 | init_remote_threadtests (); | |
7206 | #endif | |
7207 | ||
23860348 | 7208 | /* set/show remote ... */ |
d471ea57 | 7209 | |
1bedd215 | 7210 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
7211 | Remote protocol specific variables\n\ |
7212 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 7213 | the packets being used"), |
cff3e48b | 7214 | &remote_set_cmdlist, "set remote ", |
23860348 | 7215 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 7216 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
7217 | Remote protocol specific variables\n\ |
7218 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 7219 | the packets being used"), |
cff3e48b | 7220 | &remote_show_cmdlist, "show remote ", |
23860348 | 7221 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 7222 | |
1a966eab AC |
7223 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
7224 | Compare section data on target to the exec file.\n\ | |
7225 | Argument is a single section name (default: all loaded sections)."), | |
c906108c SS |
7226 | &cmdlist); |
7227 | ||
1a966eab AC |
7228 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
7229 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
7230 | maintenance packet TEXT\n\ |
7231 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
7232 | this command sends the string TEXT to the inferior, and displays the\n\ | |
7233 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 7234 | terminating `#' character and checksum."), |
c906108c SS |
7235 | &maintenancelist); |
7236 | ||
7915a72c AC |
7237 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
7238 | Set whether to send break if interrupted."), _("\ | |
7239 | Show whether to send break if interrupted."), _("\ | |
7240 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
2c5b56ce | 7241 | NULL, NULL, /* FIXME: i18n: Whether to send break if interrupted is %s. */ |
e707bbc2 | 7242 | &setlist, &showlist); |
c906108c | 7243 | |
23860348 | 7244 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 7245 | |
1a966eab AC |
7246 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
7247 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 7248 | &setlist); |
1a966eab AC |
7249 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
7250 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
7251 | &showlist); |
7252 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
7253 | set_memory_write_packet_size, _("\ |
7254 | Set the maximum number of bytes per memory-write packet.\n\ | |
7255 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
7256 | default packet size. The actual limit is further reduced\n\ | |
7257 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
7258 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
7259 | &remote_set_cmdlist); |
7260 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
7261 | set_memory_read_packet_size, _("\ |
7262 | Set the maximum number of bytes per memory-read packet.\n\ | |
7263 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
7264 | default packet size. The actual limit is further reduced\n\ | |
7265 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
7266 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
7267 | &remote_set_cmdlist); |
7268 | add_cmd ("memory-write-packet-size", no_class, | |
7269 | show_memory_write_packet_size, | |
1a966eab | 7270 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
7271 | &remote_show_cmdlist); |
7272 | add_cmd ("memory-read-packet-size", no_class, | |
7273 | show_memory_read_packet_size, | |
1a966eab | 7274 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 7275 | &remote_show_cmdlist); |
c906108c | 7276 | |
b3f42336 | 7277 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
7278 | &remote_hw_watchpoint_limit, _("\ |
7279 | Set the maximum number of target hardware watchpoints."), _("\ | |
7280 | Show the maximum number of target hardware watchpoints."), _("\ | |
7281 | Specify a negative limit for unlimited."), | |
2c5b56ce | 7282 | NULL, NULL, /* FIXME: i18n: The maximum number of target hardware watchpoints is %s. */ |
b3f42336 AC |
7283 | &remote_set_cmdlist, &remote_show_cmdlist); |
7284 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, | |
7915a72c AC |
7285 | &remote_hw_breakpoint_limit, _("\ |
7286 | Set the maximum number of target hardware breakpoints."), _("\ | |
7287 | Show the maximum number of target hardware breakpoints."), _("\ | |
7288 | Specify a negative limit for unlimited."), | |
2c5b56ce | 7289 | NULL, NULL, /* FIXME: i18n: The maximum number of target hardware breakpoints is %s. */ |
b3f42336 | 7290 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 7291 | |
4d28ad1e AC |
7292 | add_setshow_integer_cmd ("remoteaddresssize", class_obscure, |
7293 | &remote_address_size, _("\ | |
7294 | Set the maximum size of the address (in bits) in a memory packet."), _("\ | |
7295 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
7296 | NULL, | |
7297 | NULL, /* FIXME: i18n: */ | |
7298 | &setlist, &showlist); | |
c906108c | 7299 | |
444abaca | 7300 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 7301 | "X", "binary-download", 1); |
0f71a2f6 | 7302 | |
444abaca | 7303 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 7304 | "vCont", "verbose-resume", 0); |
506fb367 | 7305 | |
89be2091 DJ |
7306 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
7307 | "QPassSignals", "pass-signals", 0); | |
7308 | ||
444abaca | 7309 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 7310 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 7311 | |
444abaca | 7312 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 7313 | "P", "set-register", 1); |
d471ea57 | 7314 | |
444abaca | 7315 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 7316 | "p", "fetch-register", 1); |
b96ec7ac | 7317 | |
444abaca | 7318 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 7319 | "Z0", "software-breakpoint", 0); |
d471ea57 | 7320 | |
444abaca | 7321 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 7322 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 7323 | |
444abaca | 7324 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 7325 | "Z2", "write-watchpoint", 0); |
d471ea57 | 7326 | |
444abaca | 7327 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 7328 | "Z3", "read-watchpoint", 0); |
d471ea57 | 7329 | |
444abaca | 7330 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 7331 | "Z4", "access-watchpoint", 0); |
d471ea57 | 7332 | |
0876f84a DJ |
7333 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
7334 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 7335 | |
23181151 DJ |
7336 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
7337 | "qXfer:features:read", "target-features", 0); | |
7338 | ||
cfa9d6d9 DJ |
7339 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
7340 | "qXfer:libraries:read", "library-info", 0); | |
7341 | ||
fd79ecee DJ |
7342 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
7343 | "qXfer:memory-map:read", "memory-map", 0); | |
7344 | ||
0e7f50da UW |
7345 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_read], |
7346 | "qXfer:spu:read", "read-spu-object", 0); | |
7347 | ||
7348 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_write], | |
7349 | "qXfer:spu:write", "write-spu-object", 0); | |
7350 | ||
444abaca | 7351 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 7352 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
7353 | 0); |
7354 | ||
be2a5f71 DJ |
7355 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
7356 | "qSupported", "supported-packets", 0); | |
7357 | ||
a6b151f1 DJ |
7358 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
7359 | "vFile:open", "hostio-open", 0); | |
7360 | ||
7361 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
7362 | "vFile:pread", "hostio-pread", 0); | |
7363 | ||
7364 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
7365 | "vFile:pwrite", "hostio-pwrite", 0); | |
7366 | ||
7367 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
7368 | "vFile:close", "hostio-close", 0); | |
7369 | ||
7370 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
7371 | "vFile:unlink", "hostio-unlink", 0); | |
7372 | ||
37a105a1 DJ |
7373 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
7374 | Z sub-packet has its own set and show commands, but users may | |
7375 | have sets to this variable in their .gdbinit files (or in their | |
7376 | documentation). */ | |
e9e68a56 | 7377 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
7378 | &remote_Z_packet_detect, _("\ |
7379 | Set use of remote protocol `Z' packets"), _("\ | |
7380 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 7381 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 7382 | packets."), |
e9e68a56 | 7383 | set_remote_protocol_Z_packet_cmd, |
2c5b56ce | 7384 | show_remote_protocol_Z_packet_cmd, /* FIXME: i18n: Use of remote protocol `Z' packets is %s. */ |
e9e68a56 | 7385 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 7386 | |
a6b151f1 DJ |
7387 | add_prefix_cmd ("remote", class_files, remote_command, _("\ |
7388 | Manipulate files on the remote system\n\ | |
7389 | Transfer files to and from the remote target system."), | |
7390 | &remote_cmdlist, "remote ", | |
7391 | 0 /* allow-unknown */, &cmdlist); | |
7392 | ||
7393 | add_cmd ("put", class_files, remote_put_command, | |
7394 | _("Copy a local file to the remote system."), | |
7395 | &remote_cmdlist); | |
7396 | ||
7397 | add_cmd ("get", class_files, remote_get_command, | |
7398 | _("Copy a remote file to the local system."), | |
7399 | &remote_cmdlist); | |
7400 | ||
7401 | add_cmd ("delete", class_files, remote_delete_command, | |
7402 | _("Delete a remote file."), | |
7403 | &remote_cmdlist); | |
7404 | ||
449092f6 CV |
7405 | /* Eventually initialize fileio. See fileio.c */ |
7406 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
c906108c | 7407 | } |