Commit | Line | Data |
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c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c | 2 | |
6aba47ca DJ |
3 | Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, |
4 | 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 | |
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 CV |
60 | #include "remote-fileio.h" |
61 | ||
fd79ecee DJ |
62 | #include "memory-map.h" |
63 | ||
6765f3e5 DJ |
64 | /* The size to align memory write packets, when practical. The protocol |
65 | does not guarantee any alignment, and gdb will generate short | |
66 | writes and unaligned writes, but even as a best-effort attempt this | |
67 | can improve bulk transfers. For instance, if a write is misaligned | |
68 | relative to the target's data bus, the stub may need to make an extra | |
69 | round trip fetching data from the target. This doesn't make a | |
70 | huge difference, but it's easy to do, so we try to be helpful. | |
71 | ||
72 | The alignment chosen is arbitrary; usually data bus width is | |
73 | important here, not the possibly larger cache line size. */ | |
74 | enum { REMOTE_ALIGN_WRITES = 16 }; | |
75 | ||
23860348 | 76 | /* Prototypes for local functions. */ |
6426a772 JM |
77 | static void cleanup_sigint_signal_handler (void *dummy); |
78 | static void initialize_sigint_signal_handler (void); | |
6d820c5c | 79 | static int getpkt_sane (char **buf, long *sizeof_buf, int forever); |
6426a772 | 80 | |
a14ed312 KB |
81 | static void handle_remote_sigint (int); |
82 | static void handle_remote_sigint_twice (int); | |
83 | static void async_remote_interrupt (gdb_client_data); | |
84 | void async_remote_interrupt_twice (gdb_client_data); | |
43ff13b4 | 85 | |
a14ed312 | 86 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 87 | |
316f2060 | 88 | static void remote_prepare_to_store (struct regcache *regcache); |
c906108c | 89 | |
56be3814 | 90 | static void remote_fetch_registers (struct regcache *regcache, int regno); |
c906108c | 91 | |
39f77062 KB |
92 | static void remote_resume (ptid_t ptid, int step, |
93 | enum target_signal siggnal); | |
94 | static void remote_async_resume (ptid_t ptid, int step, | |
a14ed312 | 95 | enum target_signal siggnal); |
a14ed312 KB |
96 | static void remote_open (char *name, int from_tty); |
97 | static void remote_async_open (char *name, int from_tty); | |
c906108c | 98 | |
a14ed312 KB |
99 | static void extended_remote_open (char *name, int from_tty); |
100 | static void extended_remote_async_open (char *name, int from_tty); | |
c906108c | 101 | |
92d1e331 DJ |
102 | static void remote_open_1 (char *, int, struct target_ops *, int extended_p, |
103 | int async_p); | |
c906108c | 104 | |
a14ed312 | 105 | static void remote_close (int quitting); |
c906108c | 106 | |
56be3814 | 107 | static void remote_store_registers (struct regcache *regcache, int regno); |
c906108c | 108 | |
a14ed312 KB |
109 | static void remote_mourn (void); |
110 | static void remote_async_mourn (void); | |
c906108c | 111 | |
a14ed312 | 112 | static void extended_remote_restart (void); |
c906108c | 113 | |
a14ed312 | 114 | static void extended_remote_mourn (void); |
c906108c | 115 | |
a14ed312 | 116 | static void remote_mourn_1 (struct target_ops *); |
c906108c | 117 | |
6d820c5c | 118 | static void remote_send (char **buf, long *sizeof_buf_p); |
c906108c | 119 | |
a14ed312 | 120 | static int readchar (int timeout); |
c906108c | 121 | |
39f77062 KB |
122 | static ptid_t remote_wait (ptid_t ptid, |
123 | struct target_waitstatus *status); | |
124 | static ptid_t remote_async_wait (ptid_t ptid, | |
125 | struct target_waitstatus *status); | |
c906108c | 126 | |
a14ed312 KB |
127 | static void remote_kill (void); |
128 | static void remote_async_kill (void); | |
c906108c | 129 | |
a14ed312 | 130 | static int tohex (int nib); |
c906108c | 131 | |
a14ed312 | 132 | static void remote_detach (char *args, int from_tty); |
c906108c | 133 | |
a14ed312 | 134 | static void remote_interrupt (int signo); |
c906108c | 135 | |
a14ed312 | 136 | static void remote_interrupt_twice (int signo); |
7a292a7a | 137 | |
a14ed312 | 138 | static void interrupt_query (void); |
c906108c | 139 | |
a14ed312 | 140 | static void set_thread (int, int); |
c906108c | 141 | |
39f77062 | 142 | static int remote_thread_alive (ptid_t); |
c906108c | 143 | |
a14ed312 | 144 | static void get_offsets (void); |
c906108c | 145 | |
6d820c5c DJ |
146 | static void skip_frame (void); |
147 | ||
148 | static long read_frame (char **buf_p, long *sizeof_buf); | |
c906108c | 149 | |
a14ed312 | 150 | static int hexnumlen (ULONGEST num); |
c906108c | 151 | |
a14ed312 | 152 | static void init_remote_ops (void); |
c906108c | 153 | |
a14ed312 | 154 | static void init_extended_remote_ops (void); |
c906108c | 155 | |
a14ed312 | 156 | static void remote_stop (void); |
c906108c | 157 | |
a14ed312 | 158 | static int ishex (int ch, int *val); |
c906108c | 159 | |
a14ed312 | 160 | static int stubhex (int ch); |
c906108c | 161 | |
a14ed312 | 162 | static int hexnumstr (char *, ULONGEST); |
c906108c | 163 | |
a14ed312 | 164 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 165 | |
a14ed312 | 166 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 167 | |
a14ed312 | 168 | static void print_packet (char *); |
c906108c | 169 | |
a14ed312 | 170 | static unsigned long crc32 (unsigned char *, int, unsigned int); |
c906108c | 171 | |
a14ed312 | 172 | static void compare_sections_command (char *, int); |
c906108c | 173 | |
a14ed312 | 174 | static void packet_command (char *, int); |
c906108c | 175 | |
a14ed312 | 176 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 177 | |
39f77062 | 178 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 179 | |
a14ed312 | 180 | static void remote_find_new_threads (void); |
c906108c | 181 | |
a14ed312 | 182 | static void record_currthread (int currthread); |
c906108c | 183 | |
30559e10 | 184 | static int fromhex (int a); |
c906108c | 185 | |
cfd77fa1 | 186 | static int hex2bin (const char *hex, gdb_byte *bin, int count); |
c906108c | 187 | |
cfd77fa1 | 188 | static int bin2hex (const gdb_byte *bin, char *hex, int count); |
234fa6d1 | 189 | |
a14ed312 | 190 | static int putpkt_binary (char *buf, int cnt); |
c906108c | 191 | |
a14ed312 | 192 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 193 | |
5a2468f5 | 194 | struct packet_config; |
5a2468f5 | 195 | |
a14ed312 | 196 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 197 | |
d471ea57 | 198 | static void update_packet_config (struct packet_config *config); |
5a2468f5 | 199 | |
bb572ddd DJ |
200 | static void set_remote_protocol_packet_cmd (char *args, int from_tty, |
201 | struct cmd_list_element *c); | |
202 | ||
203 | static void show_remote_protocol_packet_cmd (struct ui_file *file, | |
204 | int from_tty, | |
205 | struct cmd_list_element *c, | |
206 | const char *value); | |
207 | ||
a14ed312 | 208 | void _initialize_remote (void); |
c906108c | 209 | |
bb572ddd DJ |
210 | /* For "set remote" and "show remote". */ |
211 | ||
212 | static struct cmd_list_element *remote_set_cmdlist; | |
213 | static struct cmd_list_element *remote_show_cmdlist; | |
214 | ||
ea9c271d DJ |
215 | /* Description of the remote protocol state for the currently |
216 | connected target. This is per-target state, and independent of the | |
217 | selected architecture. */ | |
218 | ||
219 | struct remote_state | |
220 | { | |
221 | /* A buffer to use for incoming packets, and its current size. The | |
222 | buffer is grown dynamically for larger incoming packets. | |
223 | Outgoing packets may also be constructed in this buffer. | |
224 | BUF_SIZE is always at least REMOTE_PACKET_SIZE; | |
225 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing | |
226 | packets. */ | |
227 | char *buf; | |
228 | long buf_size; | |
be2a5f71 DJ |
229 | |
230 | /* If we negotiated packet size explicitly (and thus can bypass | |
231 | heuristics for the largest packet size that will not overflow | |
232 | a buffer in the stub), this will be set to that packet size. | |
233 | Otherwise zero, meaning to use the guessed size. */ | |
234 | long explicit_packet_size; | |
ea9c271d DJ |
235 | }; |
236 | ||
237 | /* This data could be associated with a target, but we do not always | |
238 | have access to the current target when we need it, so for now it is | |
239 | static. This will be fine for as long as only one target is in use | |
240 | at a time. */ | |
241 | static struct remote_state remote_state; | |
242 | ||
243 | static struct remote_state * | |
0b83947e | 244 | get_remote_state_raw (void) |
ea9c271d DJ |
245 | { |
246 | return &remote_state; | |
247 | } | |
248 | ||
249 | /* Description of the remote protocol for a given architecture. */ | |
d01949b6 | 250 | |
ad10f812 AC |
251 | struct packet_reg |
252 | { | |
253 | long offset; /* Offset into G packet. */ | |
254 | long regnum; /* GDB's internal register number. */ | |
255 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 256 | int in_g_packet; /* Always part of G packet. */ |
2bc416ba | 257 | /* long size in bytes; == register_size (current_gdbarch, regnum); |
23860348 | 258 | at present. */ |
c9f4d572 UW |
259 | /* char *name; == gdbarch_register_name (current_gdbarch, regnum); |
260 | at present. */ | |
ad10f812 AC |
261 | }; |
262 | ||
ea9c271d | 263 | struct remote_arch_state |
d01949b6 | 264 | { |
ad10f812 AC |
265 | /* Description of the remote protocol registers. */ |
266 | long sizeof_g_packet; | |
b323314b AC |
267 | |
268 | /* Description of the remote protocol registers indexed by REGNUM | |
f57d151a | 269 | (making an array gdbarch_num_regs in size). */ |
b323314b | 270 | struct packet_reg *regs; |
ad10f812 | 271 | |
d01949b6 AC |
272 | /* This is the size (in chars) of the first response to the ``g'' |
273 | packet. It is used as a heuristic when determining the maximum | |
274 | size of memory-read and memory-write packets. A target will | |
275 | typically only reserve a buffer large enough to hold the ``g'' | |
276 | packet. The size does not include packet overhead (headers and | |
23860348 | 277 | trailers). */ |
d01949b6 AC |
278 | long actual_register_packet_size; |
279 | ||
280 | /* This is the maximum size (in chars) of a non read/write packet. | |
23860348 | 281 | It is also used as a cap on the size of read/write packets. */ |
d01949b6 AC |
282 | long remote_packet_size; |
283 | }; | |
284 | ||
3c3bea1c | 285 | |
d01949b6 AC |
286 | /* Handle for retreving the remote protocol data from gdbarch. */ |
287 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
288 | ||
ea9c271d DJ |
289 | static struct remote_arch_state * |
290 | get_remote_arch_state (void) | |
d01949b6 | 291 | { |
451fbdda | 292 | return gdbarch_data (current_gdbarch, remote_gdbarch_data_handle); |
d01949b6 AC |
293 | } |
294 | ||
0b83947e DJ |
295 | /* Fetch the global remote target state. */ |
296 | ||
297 | static struct remote_state * | |
298 | get_remote_state (void) | |
299 | { | |
300 | /* Make sure that the remote architecture state has been | |
301 | initialized, because doing so might reallocate rs->buf. Any | |
302 | function which calls getpkt also needs to be mindful of changes | |
303 | to rs->buf, but this call limits the number of places which run | |
304 | into trouble. */ | |
305 | get_remote_arch_state (); | |
306 | ||
307 | return get_remote_state_raw (); | |
308 | } | |
309 | ||
74ca34ce DJ |
310 | static int |
311 | compare_pnums (const void *lhs_, const void *rhs_) | |
312 | { | |
313 | const struct packet_reg * const *lhs = lhs_; | |
314 | const struct packet_reg * const *rhs = rhs_; | |
315 | ||
316 | if ((*lhs)->pnum < (*rhs)->pnum) | |
317 | return -1; | |
318 | else if ((*lhs)->pnum == (*rhs)->pnum) | |
319 | return 0; | |
320 | else | |
321 | return 1; | |
322 | } | |
323 | ||
d01949b6 AC |
324 | static void * |
325 | init_remote_state (struct gdbarch *gdbarch) | |
326 | { | |
74ca34ce | 327 | int regnum, num_remote_regs, offset; |
0b83947e | 328 | struct remote_state *rs = get_remote_state_raw (); |
ea9c271d | 329 | struct remote_arch_state *rsa; |
74ca34ce | 330 | struct packet_reg **remote_regs; |
ea9c271d DJ |
331 | |
332 | rsa = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_arch_state); | |
d01949b6 | 333 | |
123dc839 DJ |
334 | /* Use the architecture to build a regnum<->pnum table, which will be |
335 | 1:1 unless a feature set specifies otherwise. */ | |
f57d151a UW |
336 | rsa->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, |
337 | gdbarch_num_regs (current_gdbarch), | |
338 | struct packet_reg); | |
339 | for (regnum = 0; regnum < gdbarch_num_regs (current_gdbarch); regnum++) | |
ad10f812 | 340 | { |
ea9c271d | 341 | struct packet_reg *r = &rsa->regs[regnum]; |
baef701f DJ |
342 | |
343 | if (register_size (current_gdbarch, regnum) == 0) | |
344 | /* Do not try to fetch zero-sized (placeholder) registers. */ | |
345 | r->pnum = -1; | |
346 | else | |
347 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
348 | ||
b323314b | 349 | r->regnum = regnum; |
74ca34ce DJ |
350 | } |
351 | ||
352 | /* Define the g/G packet format as the contents of each register | |
353 | with a remote protocol number, in order of ascending protocol | |
354 | number. */ | |
355 | ||
f57d151a UW |
356 | remote_regs = alloca (gdbarch_num_regs (current_gdbarch) |
357 | * sizeof (struct packet_reg *)); | |
358 | for (num_remote_regs = 0, regnum = 0; | |
359 | regnum < gdbarch_num_regs (current_gdbarch); | |
360 | regnum++) | |
74ca34ce DJ |
361 | if (rsa->regs[regnum].pnum != -1) |
362 | remote_regs[num_remote_regs++] = &rsa->regs[regnum]; | |
7d58c67d | 363 | |
74ca34ce DJ |
364 | qsort (remote_regs, num_remote_regs, sizeof (struct packet_reg *), |
365 | compare_pnums); | |
366 | ||
367 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
368 | { | |
369 | remote_regs[regnum]->in_g_packet = 1; | |
370 | remote_regs[regnum]->offset = offset; | |
371 | offset += register_size (current_gdbarch, remote_regs[regnum]->regnum); | |
ad10f812 AC |
372 | } |
373 | ||
74ca34ce DJ |
374 | /* Record the maximum possible size of the g packet - it may turn out |
375 | to be smaller. */ | |
376 | rsa->sizeof_g_packet = offset; | |
377 | ||
d01949b6 AC |
378 | /* Default maximum number of characters in a packet body. Many |
379 | remote stubs have a hardwired buffer size of 400 bytes | |
380 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
381 | as the maximum packet-size to ensure that the packet and an extra | |
382 | NUL character can always fit in the buffer. This stops GDB | |
383 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d DJ |
384 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
385 | rsa->remote_packet_size = 400 - 1; | |
d01949b6 | 386 | |
ea9c271d DJ |
387 | /* This one is filled in when a ``g'' packet is received. */ |
388 | rsa->actual_register_packet_size = 0; | |
389 | ||
390 | /* Should rsa->sizeof_g_packet needs more space than the | |
ad10f812 AC |
391 | default, adjust the size accordingly. Remember that each byte is |
392 | encoded as two characters. 32 is the overhead for the packet | |
393 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 394 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 395 | little. */ |
ea9c271d DJ |
396 | if (rsa->sizeof_g_packet > ((rsa->remote_packet_size - 32) / 2)) |
397 | rsa->remote_packet_size = (rsa->sizeof_g_packet * 2 + 32); | |
802188a7 | 398 | |
ea9c271d DJ |
399 | /* Make sure that the packet buffer is plenty big enough for |
400 | this architecture. */ | |
401 | if (rs->buf_size < rsa->remote_packet_size) | |
402 | { | |
403 | rs->buf_size = 2 * rsa->remote_packet_size; | |
7fca722e | 404 | rs->buf = xrealloc (rs->buf, rs->buf_size); |
ea9c271d | 405 | } |
6d820c5c | 406 | |
ea9c271d DJ |
407 | return rsa; |
408 | } | |
409 | ||
410 | /* Return the current allowed size of a remote packet. This is | |
411 | inferred from the current architecture, and should be used to | |
412 | limit the length of outgoing packets. */ | |
413 | static long | |
414 | get_remote_packet_size (void) | |
415 | { | |
be2a5f71 | 416 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
417 | struct remote_arch_state *rsa = get_remote_arch_state (); |
418 | ||
be2a5f71 DJ |
419 | if (rs->explicit_packet_size) |
420 | return rs->explicit_packet_size; | |
421 | ||
ea9c271d | 422 | return rsa->remote_packet_size; |
d01949b6 AC |
423 | } |
424 | ||
ad10f812 | 425 | static struct packet_reg * |
ea9c271d | 426 | packet_reg_from_regnum (struct remote_arch_state *rsa, long regnum) |
ad10f812 | 427 | { |
f57d151a | 428 | if (regnum < 0 && regnum >= gdbarch_num_regs (current_gdbarch)) |
b323314b AC |
429 | return NULL; |
430 | else | |
ad10f812 | 431 | { |
ea9c271d | 432 | struct packet_reg *r = &rsa->regs[regnum]; |
b323314b AC |
433 | gdb_assert (r->regnum == regnum); |
434 | return r; | |
ad10f812 | 435 | } |
ad10f812 AC |
436 | } |
437 | ||
438 | static struct packet_reg * | |
ea9c271d | 439 | packet_reg_from_pnum (struct remote_arch_state *rsa, LONGEST pnum) |
ad10f812 | 440 | { |
b323314b | 441 | int i; |
f57d151a | 442 | for (i = 0; i < gdbarch_num_regs (current_gdbarch); i++) |
ad10f812 | 443 | { |
ea9c271d | 444 | struct packet_reg *r = &rsa->regs[i]; |
b323314b AC |
445 | if (r->pnum == pnum) |
446 | return r; | |
ad10f812 AC |
447 | } |
448 | return NULL; | |
d01949b6 AC |
449 | } |
450 | ||
3c3bea1c GS |
451 | /* FIXME: graces/2002-08-08: These variables should eventually be |
452 | bound to an instance of the target object (as in gdbarch-tdep()), | |
453 | when such a thing exists. */ | |
454 | ||
455 | /* This is set to the data address of the access causing the target | |
456 | to stop for a watchpoint. */ | |
457 | static CORE_ADDR remote_watch_data_address; | |
458 | ||
94e08568 | 459 | /* This is non-zero if target stopped for a watchpoint. */ |
3c3bea1c GS |
460 | static int remote_stopped_by_watchpoint_p; |
461 | ||
c906108c SS |
462 | static struct target_ops remote_ops; |
463 | ||
464 | static struct target_ops extended_remote_ops; | |
465 | ||
43ff13b4 | 466 | /* Temporary target ops. Just like the remote_ops and |
23860348 | 467 | extended_remote_ops, but with asynchronous support. */ |
43ff13b4 JM |
468 | static struct target_ops remote_async_ops; |
469 | ||
470 | static struct target_ops extended_async_remote_ops; | |
471 | ||
6426a772 JM |
472 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
473 | ``forever'' still use the normal timeout mechanism. This is | |
474 | currently used by the ASYNC code to guarentee that target reads | |
475 | during the initial connect always time-out. Once getpkt has been | |
476 | modified to return a timeout indication and, in turn | |
477 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 478 | this can go away. */ |
6426a772 JM |
479 | static int wait_forever_enabled_p = 1; |
480 | ||
481 | ||
c906108c SS |
482 | /* This variable chooses whether to send a ^C or a break when the user |
483 | requests program interruption. Although ^C is usually what remote | |
484 | systems expect, and that is the default here, sometimes a break is | |
485 | preferable instead. */ | |
486 | ||
487 | static int remote_break; | |
488 | ||
c906108c SS |
489 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
490 | remote_open knows that we don't have a file open when the program | |
491 | starts. */ | |
819cc324 | 492 | static struct serial *remote_desc = NULL; |
c906108c | 493 | |
c906108c SS |
494 | /* This variable sets the number of bits in an address that are to be |
495 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
496 | leading zeros, the entire address would be sent. This variable | |
497 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The | |
498 | initial implementation of remote.c restricted the address sent in | |
499 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
500 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
501 | address was never sent. Since fixing this bug may cause a break in | |
502 | some remote targets this variable is principly provided to | |
23860348 | 503 | facilitate backward compatibility. */ |
c906108c SS |
504 | |
505 | static int remote_address_size; | |
506 | ||
6426a772 JM |
507 | /* Tempoary to track who currently owns the terminal. See |
508 | target_async_terminal_* for more details. */ | |
509 | ||
510 | static int remote_async_terminal_ours_p; | |
511 | ||
11cf8741 | 512 | \f |
11cf8741 | 513 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
514 | memory read/write packet. MIN (rsa->remote_packet_size, |
515 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 516 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
517 | (speed up transfers). The variables ``preferred_*'' (the user |
518 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 519 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
520 | |
521 | struct memory_packet_config | |
522 | { | |
523 | char *name; | |
524 | long size; | |
525 | int fixed_p; | |
526 | }; | |
527 | ||
528 | /* Compute the current size of a read/write packet. Since this makes | |
529 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
530 | ||
531 | static long | |
532 | get_memory_packet_size (struct memory_packet_config *config) | |
533 | { | |
d01949b6 | 534 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
535 | struct remote_arch_state *rsa = get_remote_arch_state (); |
536 | ||
11cf8741 JM |
537 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk |
538 | law?) that some hosts don't cope very well with large alloca() | |
539 | calls. Eventually the alloca() code will be replaced by calls to | |
540 | xmalloc() and make_cleanups() allowing this restriction to either | |
23860348 | 541 | be lifted or removed. */ |
11cf8741 JM |
542 | #ifndef MAX_REMOTE_PACKET_SIZE |
543 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
544 | #endif | |
3de11b2e | 545 | /* NOTE: 20 ensures we can write at least one byte. */ |
11cf8741 | 546 | #ifndef MIN_REMOTE_PACKET_SIZE |
3de11b2e | 547 | #define MIN_REMOTE_PACKET_SIZE 20 |
11cf8741 JM |
548 | #endif |
549 | long what_they_get; | |
550 | if (config->fixed_p) | |
551 | { | |
552 | if (config->size <= 0) | |
553 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
554 | else | |
555 | what_they_get = config->size; | |
556 | } | |
557 | else | |
558 | { | |
ea9c271d | 559 | what_they_get = get_remote_packet_size (); |
23860348 | 560 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
561 | if (config->size > 0 |
562 | && what_they_get > config->size) | |
563 | what_they_get = config->size; | |
be2a5f71 DJ |
564 | |
565 | /* Limit it to the size of the targets ``g'' response unless we have | |
566 | permission from the stub to use a larger packet size. */ | |
567 | if (rs->explicit_packet_size == 0 | |
568 | && rsa->actual_register_packet_size > 0 | |
569 | && what_they_get > rsa->actual_register_packet_size) | |
570 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 JM |
571 | } |
572 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
573 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
574 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
575 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
6d820c5c DJ |
576 | |
577 | /* Make sure there is room in the global buffer for this packet | |
578 | (including its trailing NUL byte). */ | |
579 | if (rs->buf_size < what_they_get + 1) | |
580 | { | |
581 | rs->buf_size = 2 * what_they_get; | |
582 | rs->buf = xrealloc (rs->buf, 2 * what_they_get); | |
583 | } | |
584 | ||
11cf8741 JM |
585 | return what_they_get; |
586 | } | |
587 | ||
588 | /* Update the size of a read/write packet. If they user wants | |
23860348 | 589 | something really big then do a sanity check. */ |
11cf8741 JM |
590 | |
591 | static void | |
592 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
593 | { | |
594 | int fixed_p = config->fixed_p; | |
595 | long size = config->size; | |
596 | if (args == NULL) | |
8a3fe4f8 | 597 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
598 | else if (strcmp (args, "hard") == 0 |
599 | || strcmp (args, "fixed") == 0) | |
600 | fixed_p = 1; | |
601 | else if (strcmp (args, "soft") == 0 | |
602 | || strcmp (args, "limit") == 0) | |
603 | fixed_p = 0; | |
604 | else | |
605 | { | |
606 | char *end; | |
607 | size = strtoul (args, &end, 0); | |
608 | if (args == end) | |
8a3fe4f8 | 609 | error (_("Invalid %s (bad syntax)."), config->name); |
11cf8741 JM |
610 | #if 0 |
611 | /* Instead of explicitly capping the size of a packet to | |
612 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
613 | instead allowed to set the size to something arbitrarily | |
23860348 | 614 | large. */ |
11cf8741 | 615 | if (size > MAX_REMOTE_PACKET_SIZE) |
8a3fe4f8 | 616 | error (_("Invalid %s (too large)."), config->name); |
11cf8741 JM |
617 | #endif |
618 | } | |
23860348 | 619 | /* Extra checks? */ |
11cf8741 JM |
620 | if (fixed_p && !config->fixed_p) |
621 | { | |
e2e0b3e5 AC |
622 | if (! query (_("The target may not be able to correctly handle a %s\n" |
623 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 624 | config->name, size)) |
8a3fe4f8 | 625 | error (_("Packet size not changed.")); |
11cf8741 | 626 | } |
23860348 | 627 | /* Update the config. */ |
11cf8741 JM |
628 | config->fixed_p = fixed_p; |
629 | config->size = size; | |
630 | } | |
631 | ||
632 | static void | |
633 | show_memory_packet_size (struct memory_packet_config *config) | |
634 | { | |
a3f17187 | 635 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 636 | if (config->fixed_p) |
a3f17187 | 637 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
638 | get_memory_packet_size (config)); |
639 | else | |
a3f17187 | 640 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
641 | get_memory_packet_size (config)); |
642 | } | |
643 | ||
644 | static struct memory_packet_config memory_write_packet_config = | |
645 | { | |
646 | "memory-write-packet-size", | |
647 | }; | |
648 | ||
649 | static void | |
650 | set_memory_write_packet_size (char *args, int from_tty) | |
651 | { | |
652 | set_memory_packet_size (args, &memory_write_packet_config); | |
653 | } | |
654 | ||
655 | static void | |
656 | show_memory_write_packet_size (char *args, int from_tty) | |
657 | { | |
658 | show_memory_packet_size (&memory_write_packet_config); | |
659 | } | |
660 | ||
661 | static long | |
662 | get_memory_write_packet_size (void) | |
663 | { | |
664 | return get_memory_packet_size (&memory_write_packet_config); | |
665 | } | |
666 | ||
667 | static struct memory_packet_config memory_read_packet_config = | |
668 | { | |
669 | "memory-read-packet-size", | |
670 | }; | |
671 | ||
672 | static void | |
673 | set_memory_read_packet_size (char *args, int from_tty) | |
674 | { | |
675 | set_memory_packet_size (args, &memory_read_packet_config); | |
676 | } | |
677 | ||
678 | static void | |
679 | show_memory_read_packet_size (char *args, int from_tty) | |
680 | { | |
681 | show_memory_packet_size (&memory_read_packet_config); | |
682 | } | |
683 | ||
684 | static long | |
685 | get_memory_read_packet_size (void) | |
686 | { | |
687 | long size = get_memory_packet_size (&memory_read_packet_config); | |
688 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an | |
689 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
690 | increased beyond this. */ |
691 | if (size > get_remote_packet_size ()) | |
692 | size = get_remote_packet_size (); | |
11cf8741 JM |
693 | return size; |
694 | } | |
695 | ||
11cf8741 | 696 | \f |
5a2468f5 JM |
697 | /* Generic configuration support for packets the stub optionally |
698 | supports. Allows the user to specify the use of the packet as well | |
23860348 | 699 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
700 | |
701 | enum packet_support | |
702 | { | |
703 | PACKET_SUPPORT_UNKNOWN = 0, | |
704 | PACKET_ENABLE, | |
705 | PACKET_DISABLE | |
706 | }; | |
707 | ||
5a2468f5 JM |
708 | struct packet_config |
709 | { | |
bb572ddd DJ |
710 | const char *name; |
711 | const char *title; | |
7f19b9a2 | 712 | enum auto_boolean detect; |
5a2468f5 JM |
713 | enum packet_support support; |
714 | }; | |
715 | ||
d471ea57 | 716 | /* Analyze a packet's return value and update the packet config |
23860348 | 717 | accordingly. */ |
d471ea57 AC |
718 | |
719 | enum packet_result | |
720 | { | |
721 | PACKET_ERROR, | |
722 | PACKET_OK, | |
723 | PACKET_UNKNOWN | |
724 | }; | |
725 | ||
5a2468f5 | 726 | static void |
d471ea57 | 727 | update_packet_config (struct packet_config *config) |
5a2468f5 | 728 | { |
d471ea57 AC |
729 | switch (config->detect) |
730 | { | |
7f19b9a2 | 731 | case AUTO_BOOLEAN_TRUE: |
d471ea57 AC |
732 | config->support = PACKET_ENABLE; |
733 | break; | |
7f19b9a2 | 734 | case AUTO_BOOLEAN_FALSE: |
d471ea57 AC |
735 | config->support = PACKET_DISABLE; |
736 | break; | |
7f19b9a2 | 737 | case AUTO_BOOLEAN_AUTO: |
d471ea57 AC |
738 | config->support = PACKET_SUPPORT_UNKNOWN; |
739 | break; | |
740 | } | |
5a2468f5 JM |
741 | } |
742 | ||
743 | static void | |
fba45db2 | 744 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
745 | { |
746 | char *support = "internal-error"; | |
747 | switch (config->support) | |
748 | { | |
749 | case PACKET_ENABLE: | |
750 | support = "enabled"; | |
751 | break; | |
752 | case PACKET_DISABLE: | |
753 | support = "disabled"; | |
754 | break; | |
755 | case PACKET_SUPPORT_UNKNOWN: | |
756 | support = "unknown"; | |
757 | break; | |
758 | } | |
759 | switch (config->detect) | |
760 | { | |
7f19b9a2 | 761 | case AUTO_BOOLEAN_AUTO: |
37a105a1 DJ |
762 | printf_filtered (_("Support for the `%s' packet is auto-detected, currently %s.\n"), |
763 | config->name, support); | |
5a2468f5 | 764 | break; |
7f19b9a2 AC |
765 | case AUTO_BOOLEAN_TRUE: |
766 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
767 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
768 | config->name, support); | |
8e248173 | 769 | break; |
5a2468f5 JM |
770 | } |
771 | } | |
772 | ||
773 | static void | |
bb572ddd DJ |
774 | add_packet_config_cmd (struct packet_config *config, const char *name, |
775 | const char *title, int legacy) | |
d471ea57 | 776 | { |
5a2468f5 JM |
777 | char *set_doc; |
778 | char *show_doc; | |
d471ea57 | 779 | char *cmd_name; |
3ed07be4 | 780 | |
5a2468f5 JM |
781 | config->name = name; |
782 | config->title = title; | |
7f19b9a2 | 783 | config->detect = AUTO_BOOLEAN_AUTO; |
8e248173 | 784 | config->support = PACKET_SUPPORT_UNKNOWN; |
b435e160 AC |
785 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
786 | name, title); | |
787 | show_doc = xstrprintf ("Show current use of remote protocol `%s' (%s) packet", | |
788 | name, title); | |
d471ea57 | 789 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 790 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 791 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
2c5b56ce | 792 | &config->detect, set_doc, show_doc, NULL, /* help_doc */ |
bb572ddd DJ |
793 | set_remote_protocol_packet_cmd, |
794 | show_remote_protocol_packet_cmd, | |
795 | &remote_set_cmdlist, &remote_show_cmdlist); | |
23860348 | 796 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
797 | if (legacy) |
798 | { | |
799 | char *legacy_name; | |
b435e160 | 800 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 801 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 802 | &remote_set_cmdlist); |
d471ea57 | 803 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 804 | &remote_show_cmdlist); |
d471ea57 | 805 | } |
5a2468f5 JM |
806 | } |
807 | ||
d471ea57 | 808 | static enum packet_result |
a76d924d | 809 | packet_check_result (const char *buf) |
5a2468f5 | 810 | { |
d471ea57 | 811 | if (buf[0] != '\0') |
5a2468f5 | 812 | { |
d471ea57 | 813 | /* The stub recognized the packet request. Check that the |
23860348 | 814 | operation succeeded. */ |
a76d924d DJ |
815 | if (buf[0] == 'E' |
816 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
817 | && buf[3] == '\0') | |
818 | /* "Enn" - definitly an error. */ | |
819 | return PACKET_ERROR; | |
820 | ||
821 | /* Always treat "E." as an error. This will be used for | |
822 | more verbose error messages, such as E.memtypes. */ | |
823 | if (buf[0] == 'E' && buf[1] == '.') | |
824 | return PACKET_ERROR; | |
825 | ||
826 | /* The packet may or may not be OK. Just assume it is. */ | |
827 | return PACKET_OK; | |
828 | } | |
829 | else | |
830 | /* The stub does not support the packet. */ | |
831 | return PACKET_UNKNOWN; | |
832 | } | |
833 | ||
834 | static enum packet_result | |
835 | packet_ok (const char *buf, struct packet_config *config) | |
836 | { | |
837 | enum packet_result result; | |
838 | ||
839 | result = packet_check_result (buf); | |
840 | switch (result) | |
841 | { | |
842 | case PACKET_OK: | |
843 | case PACKET_ERROR: | |
844 | /* The stub recognized the packet request. */ | |
d471ea57 AC |
845 | switch (config->support) |
846 | { | |
847 | case PACKET_SUPPORT_UNKNOWN: | |
848 | if (remote_debug) | |
849 | fprintf_unfiltered (gdb_stdlog, | |
850 | "Packet %s (%s) is supported\n", | |
851 | config->name, config->title); | |
852 | config->support = PACKET_ENABLE; | |
853 | break; | |
854 | case PACKET_DISABLE: | |
8e65ff28 | 855 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 856 | _("packet_ok: attempt to use a disabled packet")); |
d471ea57 AC |
857 | break; |
858 | case PACKET_ENABLE: | |
859 | break; | |
860 | } | |
a76d924d DJ |
861 | break; |
862 | case PACKET_UNKNOWN: | |
23860348 | 863 | /* The stub does not support the packet. */ |
d471ea57 AC |
864 | switch (config->support) |
865 | { | |
866 | case PACKET_ENABLE: | |
7f19b9a2 | 867 | if (config->detect == AUTO_BOOLEAN_AUTO) |
d471ea57 | 868 | /* If the stub previously indicated that the packet was |
23860348 | 869 | supported then there is a protocol error.. */ |
8a3fe4f8 | 870 | error (_("Protocol error: %s (%s) conflicting enabled responses."), |
d471ea57 AC |
871 | config->name, config->title); |
872 | else | |
23860348 | 873 | /* The user set it wrong. */ |
8a3fe4f8 | 874 | error (_("Enabled packet %s (%s) not recognized by stub"), |
d471ea57 AC |
875 | config->name, config->title); |
876 | break; | |
877 | case PACKET_SUPPORT_UNKNOWN: | |
878 | if (remote_debug) | |
879 | fprintf_unfiltered (gdb_stdlog, | |
880 | "Packet %s (%s) is NOT supported\n", | |
881 | config->name, config->title); | |
882 | config->support = PACKET_DISABLE; | |
883 | break; | |
884 | case PACKET_DISABLE: | |
885 | break; | |
886 | } | |
a76d924d | 887 | break; |
5a2468f5 | 888 | } |
a76d924d DJ |
889 | |
890 | return result; | |
5a2468f5 JM |
891 | } |
892 | ||
444abaca DJ |
893 | enum { |
894 | PACKET_vCont = 0, | |
895 | PACKET_X, | |
896 | PACKET_qSymbol, | |
897 | PACKET_P, | |
898 | PACKET_p, | |
899 | PACKET_Z0, | |
900 | PACKET_Z1, | |
901 | PACKET_Z2, | |
902 | PACKET_Z3, | |
903 | PACKET_Z4, | |
0876f84a | 904 | PACKET_qXfer_auxv, |
23181151 | 905 | PACKET_qXfer_features, |
cfa9d6d9 | 906 | PACKET_qXfer_libraries, |
fd79ecee | 907 | PACKET_qXfer_memory_map, |
0e7f50da UW |
908 | PACKET_qXfer_spu_read, |
909 | PACKET_qXfer_spu_write, | |
444abaca | 910 | PACKET_qGetTLSAddr, |
be2a5f71 | 911 | PACKET_qSupported, |
89be2091 | 912 | PACKET_QPassSignals, |
444abaca DJ |
913 | PACKET_MAX |
914 | }; | |
506fb367 | 915 | |
444abaca | 916 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 MS |
917 | |
918 | static void | |
444abaca DJ |
919 | set_remote_protocol_packet_cmd (char *args, int from_tty, |
920 | struct cmd_list_element *c) | |
dc8acb97 | 921 | { |
444abaca | 922 | struct packet_config *packet; |
dc8acb97 | 923 | |
444abaca DJ |
924 | for (packet = remote_protocol_packets; |
925 | packet < &remote_protocol_packets[PACKET_MAX]; | |
926 | packet++) | |
927 | { | |
928 | if (&packet->detect == c->var) | |
929 | { | |
930 | update_packet_config (packet); | |
931 | return; | |
932 | } | |
933 | } | |
934 | internal_error (__FILE__, __LINE__, "Could not find config for %s", | |
935 | c->name); | |
dc8acb97 MS |
936 | } |
937 | ||
5a2468f5 | 938 | static void |
444abaca DJ |
939 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
940 | struct cmd_list_element *c, | |
941 | const char *value) | |
5a2468f5 | 942 | { |
444abaca | 943 | struct packet_config *packet; |
5a2468f5 | 944 | |
444abaca DJ |
945 | for (packet = remote_protocol_packets; |
946 | packet < &remote_protocol_packets[PACKET_MAX]; | |
947 | packet++) | |
948 | { | |
949 | if (&packet->detect == c->var) | |
950 | { | |
951 | show_packet_config_cmd (packet); | |
952 | return; | |
953 | } | |
954 | } | |
955 | internal_error (__FILE__, __LINE__, "Could not find config for %s", | |
956 | c->name); | |
5a2468f5 JM |
957 | } |
958 | ||
d471ea57 AC |
959 | /* Should we try one of the 'Z' requests? */ |
960 | ||
961 | enum Z_packet_type | |
962 | { | |
963 | Z_PACKET_SOFTWARE_BP, | |
964 | Z_PACKET_HARDWARE_BP, | |
965 | Z_PACKET_WRITE_WP, | |
966 | Z_PACKET_READ_WP, | |
967 | Z_PACKET_ACCESS_WP, | |
968 | NR_Z_PACKET_TYPES | |
969 | }; | |
96baa820 | 970 | |
d471ea57 | 971 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 972 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 973 | |
7f19b9a2 | 974 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
975 | |
976 | static void | |
fba45db2 KB |
977 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
978 | struct cmd_list_element *c) | |
96baa820 | 979 | { |
d471ea57 AC |
980 | int i; |
981 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
982 | { | |
444abaca DJ |
983 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
984 | update_packet_config (&remote_protocol_packets[PACKET_Z0 + i]); | |
d471ea57 | 985 | } |
96baa820 JM |
986 | } |
987 | ||
988 | static void | |
08546159 AC |
989 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
990 | struct cmd_list_element *c, | |
991 | const char *value) | |
96baa820 | 992 | { |
d471ea57 AC |
993 | int i; |
994 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
995 | { | |
444abaca | 996 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 997 | } |
96baa820 JM |
998 | } |
999 | ||
9d1f7ab2 MS |
1000 | /* Should we try the 'ThreadInfo' query packet? |
1001 | ||
1002 | This variable (NOT available to the user: auto-detect only!) | |
1003 | determines whether GDB will use the new, simpler "ThreadInfo" | |
1004 | query or the older, more complex syntax for thread queries. | |
802188a7 | 1005 | This is an auto-detect variable (set to true at each connect, |
9d1f7ab2 MS |
1006 | and set to false when the target fails to recognize it). */ |
1007 | ||
1008 | static int use_threadinfo_query; | |
1009 | static int use_threadextra_query; | |
1010 | ||
23860348 | 1011 | /* Tokens for use by the asynchronous signal handlers for SIGINT. */ |
d5d6fca5 DJ |
1012 | static struct async_signal_handler *sigint_remote_twice_token; |
1013 | static struct async_signal_handler *sigint_remote_token; | |
43ff13b4 | 1014 | |
c906108c SS |
1015 | /* These are pointers to hook functions that may be set in order to |
1016 | modify resume/wait behavior for a particular architecture. */ | |
1017 | ||
9a4105ab AC |
1018 | void (*deprecated_target_resume_hook) (void); |
1019 | void (*deprecated_target_wait_loop_hook) (void); | |
c906108c SS |
1020 | \f |
1021 | ||
c5aa993b | 1022 | |
c906108c SS |
1023 | /* These are the threads which we last sent to the remote system. |
1024 | -1 for all or -2 for not sent yet. */ | |
1025 | static int general_thread; | |
cce74817 | 1026 | static int continue_thread; |
c906108c SS |
1027 | |
1028 | /* Call this function as a result of | |
1029 | 1) A halt indication (T packet) containing a thread id | |
1030 | 2) A direct query of currthread | |
1031 | 3) Successful execution of set thread | |
1032 | */ | |
1033 | ||
1034 | static void | |
fba45db2 | 1035 | record_currthread (int currthread) |
c906108c | 1036 | { |
c906108c | 1037 | general_thread = currthread; |
cce74817 | 1038 | |
c906108c SS |
1039 | /* If this is a new thread, add it to GDB's thread list. |
1040 | If we leave it up to WFI to do this, bad things will happen. */ | |
39f77062 | 1041 | if (!in_thread_list (pid_to_ptid (currthread))) |
0f71a2f6 | 1042 | { |
39f77062 | 1043 | add_thread (pid_to_ptid (currthread)); |
8b93c638 | 1044 | ui_out_text (uiout, "[New "); |
39f77062 | 1045 | ui_out_text (uiout, target_pid_to_str (pid_to_ptid (currthread))); |
8b93c638 | 1046 | ui_out_text (uiout, "]\n"); |
0f71a2f6 | 1047 | } |
c906108c SS |
1048 | } |
1049 | ||
89be2091 DJ |
1050 | static char *last_pass_packet; |
1051 | ||
1052 | /* If 'QPassSignals' is supported, tell the remote stub what signals | |
1053 | it can simply pass through to the inferior without reporting. */ | |
1054 | ||
1055 | static void | |
1056 | remote_pass_signals (void) | |
1057 | { | |
1058 | if (remote_protocol_packets[PACKET_QPassSignals].support != PACKET_DISABLE) | |
1059 | { | |
1060 | char *pass_packet, *p; | |
1061 | int numsigs = (int) TARGET_SIGNAL_LAST; | |
1062 | int count = 0, i; | |
1063 | ||
1064 | gdb_assert (numsigs < 256); | |
1065 | for (i = 0; i < numsigs; i++) | |
1066 | { | |
1067 | if (signal_stop_state (i) == 0 | |
1068 | && signal_print_state (i) == 0 | |
1069 | && signal_pass_state (i) == 1) | |
1070 | count++; | |
1071 | } | |
1072 | pass_packet = xmalloc (count * 3 + strlen ("QPassSignals:") + 1); | |
1073 | strcpy (pass_packet, "QPassSignals:"); | |
1074 | p = pass_packet + strlen (pass_packet); | |
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 | { | |
1081 | if (i >= 16) | |
1082 | *p++ = tohex (i >> 4); | |
1083 | *p++ = tohex (i & 15); | |
1084 | if (count) | |
1085 | *p++ = ';'; | |
1086 | else | |
1087 | break; | |
1088 | count--; | |
1089 | } | |
1090 | } | |
1091 | *p = 0; | |
1092 | if (!last_pass_packet || strcmp (last_pass_packet, pass_packet)) | |
1093 | { | |
1094 | struct remote_state *rs = get_remote_state (); | |
1095 | char *buf = rs->buf; | |
1096 | ||
1097 | putpkt (pass_packet); | |
1098 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1099 | packet_ok (buf, &remote_protocol_packets[PACKET_QPassSignals]); | |
1100 | if (last_pass_packet) | |
1101 | xfree (last_pass_packet); | |
1102 | last_pass_packet = pass_packet; | |
1103 | } | |
1104 | else | |
1105 | xfree (pass_packet); | |
1106 | } | |
1107 | } | |
1108 | ||
c906108c SS |
1109 | #define MAGIC_NULL_PID 42000 |
1110 | ||
1111 | static void | |
fba45db2 | 1112 | set_thread (int th, int gen) |
c906108c | 1113 | { |
d01949b6 | 1114 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 1115 | char *buf = rs->buf; |
cce74817 | 1116 | int state = gen ? general_thread : continue_thread; |
c906108c SS |
1117 | |
1118 | if (state == th) | |
1119 | return; | |
1120 | ||
1121 | buf[0] = 'H'; | |
1122 | buf[1] = gen ? 'g' : 'c'; | |
1123 | if (th == MAGIC_NULL_PID) | |
1124 | { | |
1125 | buf[2] = '0'; | |
1126 | buf[3] = '\0'; | |
1127 | } | |
1128 | else if (th < 0) | |
ea9c271d | 1129 | xsnprintf (&buf[2], get_remote_packet_size () - 2, "-%x", -th); |
c906108c | 1130 | else |
ea9c271d | 1131 | xsnprintf (&buf[2], get_remote_packet_size () - 2, "%x", th); |
c906108c | 1132 | putpkt (buf); |
6d820c5c | 1133 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 1134 | if (gen) |
c5aa993b | 1135 | general_thread = th; |
c906108c | 1136 | else |
cce74817 | 1137 | continue_thread = th; |
c906108c SS |
1138 | } |
1139 | \f | |
1140 | /* Return nonzero if the thread TH is still alive on the remote system. */ | |
1141 | ||
1142 | static int | |
39f77062 | 1143 | remote_thread_alive (ptid_t ptid) |
c906108c | 1144 | { |
6d820c5c | 1145 | struct remote_state *rs = get_remote_state (); |
39f77062 | 1146 | int tid = PIDGET (ptid); |
c906108c | 1147 | |
cce74817 | 1148 | if (tid < 0) |
2e9f7625 | 1149 | xsnprintf (rs->buf, get_remote_packet_size (), "T-%08x", -tid); |
c906108c | 1150 | else |
2e9f7625 DJ |
1151 | xsnprintf (rs->buf, get_remote_packet_size (), "T%08x", tid); |
1152 | putpkt (rs->buf); | |
6d820c5c | 1153 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1154 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
1155 | } |
1156 | ||
1157 | /* About these extended threadlist and threadinfo packets. They are | |
1158 | variable length packets but, the fields within them are often fixed | |
1159 | length. They are redundent enough to send over UDP as is the | |
1160 | remote protocol in general. There is a matching unit test module | |
1161 | in libstub. */ | |
1162 | ||
cce74817 JM |
1163 | #define OPAQUETHREADBYTES 8 |
1164 | ||
1165 | /* a 64 bit opaque identifier */ | |
1166 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
1167 | ||
23860348 MS |
1168 | /* WARNING: This threadref data structure comes from the remote O.S., |
1169 | libstub protocol encoding, and remote.c. it is not particularly | |
1170 | changable. */ | |
cce74817 JM |
1171 | |
1172 | /* Right now, the internal structure is int. We want it to be bigger. | |
1173 | Plan to fix this. | |
c5aa993b | 1174 | */ |
cce74817 | 1175 | |
23860348 | 1176 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 1177 | |
9d1f7ab2 | 1178 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 1179 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
1180 | |
1181 | struct gdb_ext_thread_info | |
c5aa993b | 1182 | { |
23860348 | 1183 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 1184 | int active; /* Has state interesting to GDB? |
23860348 | 1185 | regs, stack. */ |
2bc416ba | 1186 | char display[256]; /* Brief state display, name, |
cedea757 | 1187 | blocked/suspended. */ |
23860348 | 1188 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 1189 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 1190 | whatever. */ |
c5aa993b | 1191 | }; |
cce74817 JM |
1192 | |
1193 | /* The volume of remote transfers can be limited by submitting | |
1194 | a mask containing bits specifying the desired information. | |
1195 | Use a union of these values as the 'selection' parameter to | |
1196 | get_thread_info. FIXME: Make these TAG names more thread specific. | |
c5aa993b | 1197 | */ |
cce74817 JM |
1198 | |
1199 | #define TAG_THREADID 1 | |
1200 | #define TAG_EXISTS 2 | |
1201 | #define TAG_DISPLAY 4 | |
1202 | #define TAG_THREADNAME 8 | |
c5aa993b | 1203 | #define TAG_MOREDISPLAY 16 |
cce74817 | 1204 | |
23860348 | 1205 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 1206 | |
b2dd6311 | 1207 | char *unpack_varlen_hex (char *buff, ULONGEST *result); |
cce74817 | 1208 | |
a14ed312 | 1209 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 1210 | |
a14ed312 | 1211 | static char *pack_nibble (char *buf, int nibble); |
cce74817 | 1212 | |
23860348 | 1213 | static char *pack_hex_byte (char *pkt, int /* unsigned char */ byte); |
cce74817 | 1214 | |
a14ed312 | 1215 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 1216 | |
a14ed312 | 1217 | static char *pack_int (char *buf, int value); |
cce74817 | 1218 | |
a14ed312 | 1219 | static char *unpack_int (char *buf, int *value); |
cce74817 | 1220 | |
a14ed312 | 1221 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 1222 | |
23860348 | 1223 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 1224 | |
23860348 | 1225 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 1226 | |
23860348 | 1227 | void int_to_threadref (threadref *id, int value); |
cce74817 | 1228 | |
23860348 | 1229 | static int threadref_to_int (threadref *ref); |
cce74817 | 1230 | |
23860348 | 1231 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 1232 | |
23860348 | 1233 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 1234 | |
2bc416ba | 1235 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 1236 | threadref *id); |
cce74817 | 1237 | |
a14ed312 | 1238 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 1239 | threadref *expectedref, |
a14ed312 KB |
1240 | struct gdb_ext_thread_info |
1241 | *info); | |
cce74817 JM |
1242 | |
1243 | ||
2bc416ba | 1244 | static int remote_get_threadinfo (threadref *threadid, |
23860348 | 1245 | int fieldset, /*TAG mask */ |
a14ed312 | 1246 | struct gdb_ext_thread_info *info); |
cce74817 | 1247 | |
a14ed312 KB |
1248 | static char *pack_threadlist_request (char *pkt, int startflag, |
1249 | int threadcount, | |
23860348 | 1250 | threadref *nextthread); |
cce74817 | 1251 | |
a14ed312 KB |
1252 | static int parse_threadlist_response (char *pkt, |
1253 | int result_limit, | |
23860348 | 1254 | threadref *original_echo, |
2bc416ba | 1255 | threadref *resultlist, |
23860348 | 1256 | int *doneflag); |
cce74817 | 1257 | |
a14ed312 | 1258 | static int remote_get_threadlist (int startflag, |
23860348 | 1259 | threadref *nextthread, |
a14ed312 KB |
1260 | int result_limit, |
1261 | int *done, | |
2bc416ba | 1262 | int *result_count, |
23860348 | 1263 | threadref *threadlist); |
cce74817 | 1264 | |
23860348 | 1265 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 1266 | |
a14ed312 KB |
1267 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
1268 | void *context, int looplimit); | |
cce74817 | 1269 | |
23860348 | 1270 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 1271 | |
23860348 | 1272 | /* Encode 64 bits in 16 chars of hex. */ |
c906108c SS |
1273 | |
1274 | static const char hexchars[] = "0123456789abcdef"; | |
1275 | ||
1276 | static int | |
fba45db2 | 1277 | ishex (int ch, int *val) |
c906108c SS |
1278 | { |
1279 | if ((ch >= 'a') && (ch <= 'f')) | |
1280 | { | |
1281 | *val = ch - 'a' + 10; | |
1282 | return 1; | |
1283 | } | |
1284 | if ((ch >= 'A') && (ch <= 'F')) | |
1285 | { | |
1286 | *val = ch - 'A' + 10; | |
1287 | return 1; | |
1288 | } | |
1289 | if ((ch >= '0') && (ch <= '9')) | |
1290 | { | |
1291 | *val = ch - '0'; | |
1292 | return 1; | |
1293 | } | |
1294 | return 0; | |
1295 | } | |
1296 | ||
1297 | static int | |
fba45db2 | 1298 | stubhex (int ch) |
c906108c SS |
1299 | { |
1300 | if (ch >= 'a' && ch <= 'f') | |
1301 | return ch - 'a' + 10; | |
1302 | if (ch >= '0' && ch <= '9') | |
1303 | return ch - '0'; | |
1304 | if (ch >= 'A' && ch <= 'F') | |
1305 | return ch - 'A' + 10; | |
1306 | return -1; | |
1307 | } | |
1308 | ||
1309 | static int | |
fba45db2 | 1310 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
1311 | { |
1312 | int nibble; | |
1313 | int retval = 0; | |
1314 | ||
1315 | while (fieldlength) | |
1316 | { | |
1317 | nibble = stubhex (*buff++); | |
1318 | retval |= nibble; | |
1319 | fieldlength--; | |
1320 | if (fieldlength) | |
1321 | retval = retval << 4; | |
1322 | } | |
1323 | return retval; | |
1324 | } | |
1325 | ||
1326 | char * | |
fba45db2 | 1327 | unpack_varlen_hex (char *buff, /* packet to parse */ |
b2dd6311 | 1328 | ULONGEST *result) |
c906108c SS |
1329 | { |
1330 | int nibble; | |
d49c44d5 | 1331 | ULONGEST retval = 0; |
c906108c SS |
1332 | |
1333 | while (ishex (*buff, &nibble)) | |
1334 | { | |
1335 | buff++; | |
1336 | retval = retval << 4; | |
1337 | retval |= nibble & 0x0f; | |
1338 | } | |
1339 | *result = retval; | |
1340 | return buff; | |
1341 | } | |
1342 | ||
1343 | static char * | |
fba45db2 | 1344 | unpack_nibble (char *buf, int *val) |
c906108c SS |
1345 | { |
1346 | ishex (*buf++, val); | |
1347 | return buf; | |
1348 | } | |
1349 | ||
1350 | static char * | |
fba45db2 | 1351 | pack_nibble (char *buf, int nibble) |
c906108c SS |
1352 | { |
1353 | *buf++ = hexchars[(nibble & 0x0f)]; | |
1354 | return buf; | |
1355 | } | |
1356 | ||
1357 | static char * | |
fba45db2 | 1358 | pack_hex_byte (char *pkt, int byte) |
c906108c SS |
1359 | { |
1360 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
1361 | *pkt++ = hexchars[(byte & 0xf)]; | |
1362 | return pkt; | |
1363 | } | |
1364 | ||
1365 | static char * | |
fba45db2 | 1366 | unpack_byte (char *buf, int *value) |
c906108c SS |
1367 | { |
1368 | *value = stub_unpack_int (buf, 2); | |
1369 | return buf + 2; | |
1370 | } | |
1371 | ||
1372 | static char * | |
fba45db2 | 1373 | pack_int (char *buf, int value) |
c906108c SS |
1374 | { |
1375 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
1376 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
1377 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
1378 | buf = pack_hex_byte (buf, (value & 0xff)); | |
1379 | return buf; | |
1380 | } | |
1381 | ||
1382 | static char * | |
fba45db2 | 1383 | unpack_int (char *buf, int *value) |
c906108c SS |
1384 | { |
1385 | *value = stub_unpack_int (buf, 8); | |
1386 | return buf + 8; | |
1387 | } | |
1388 | ||
23860348 | 1389 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 1390 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
1391 | |
1392 | static char * | |
fba45db2 | 1393 | pack_string (char *pkt, char *string) |
c906108c SS |
1394 | { |
1395 | char ch; | |
1396 | int len; | |
1397 | ||
1398 | len = strlen (string); | |
1399 | if (len > 200) | |
23860348 | 1400 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
1401 | pkt = pack_hex_byte (pkt, len); |
1402 | while (len-- > 0) | |
1403 | { | |
1404 | ch = *string++; | |
1405 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 1406 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
1407 | *pkt++ = ch; |
1408 | } | |
1409 | return pkt; | |
1410 | } | |
1411 | #endif /* 0 (unused) */ | |
1412 | ||
1413 | static char * | |
fba45db2 | 1414 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
1415 | { |
1416 | while (length--) | |
1417 | *dest++ = *src++; | |
1418 | *dest = '\0'; | |
1419 | return src; | |
1420 | } | |
1421 | ||
1422 | static char * | |
fba45db2 | 1423 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
1424 | { |
1425 | char *limit; | |
1426 | unsigned char *altid; | |
1427 | ||
1428 | altid = (unsigned char *) id; | |
1429 | limit = pkt + BUF_THREAD_ID_SIZE; | |
1430 | while (pkt < limit) | |
1431 | pkt = pack_hex_byte (pkt, *altid++); | |
1432 | return pkt; | |
1433 | } | |
1434 | ||
1435 | ||
1436 | static char * | |
fba45db2 | 1437 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
1438 | { |
1439 | char *altref; | |
1440 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
1441 | int x, y; | |
1442 | ||
1443 | altref = (char *) id; | |
1444 | ||
1445 | while (inbuf < limit) | |
1446 | { | |
1447 | x = stubhex (*inbuf++); | |
1448 | y = stubhex (*inbuf++); | |
1449 | *altref++ = (x << 4) | y; | |
1450 | } | |
1451 | return inbuf; | |
1452 | } | |
1453 | ||
1454 | /* Externally, threadrefs are 64 bits but internally, they are still | |
1455 | ints. This is due to a mismatch of specifications. We would like | |
1456 | to use 64bit thread references internally. This is an adapter | |
1457 | function. */ | |
1458 | ||
1459 | void | |
fba45db2 | 1460 | int_to_threadref (threadref *id, int value) |
c906108c SS |
1461 | { |
1462 | unsigned char *scan; | |
1463 | ||
1464 | scan = (unsigned char *) id; | |
1465 | { | |
1466 | int i = 4; | |
1467 | while (i--) | |
1468 | *scan++ = 0; | |
1469 | } | |
1470 | *scan++ = (value >> 24) & 0xff; | |
1471 | *scan++ = (value >> 16) & 0xff; | |
1472 | *scan++ = (value >> 8) & 0xff; | |
1473 | *scan++ = (value & 0xff); | |
1474 | } | |
1475 | ||
1476 | static int | |
fba45db2 | 1477 | threadref_to_int (threadref *ref) |
c906108c SS |
1478 | { |
1479 | int i, value = 0; | |
1480 | unsigned char *scan; | |
1481 | ||
cfd77fa1 | 1482 | scan = *ref; |
c906108c SS |
1483 | scan += 4; |
1484 | i = 4; | |
1485 | while (i-- > 0) | |
1486 | value = (value << 8) | ((*scan++) & 0xff); | |
1487 | return value; | |
1488 | } | |
1489 | ||
1490 | static void | |
fba45db2 | 1491 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
1492 | { |
1493 | int i; | |
1494 | unsigned char *csrc, *cdest; | |
1495 | ||
1496 | csrc = (unsigned char *) src; | |
1497 | cdest = (unsigned char *) dest; | |
1498 | i = 8; | |
1499 | while (i--) | |
1500 | *cdest++ = *csrc++; | |
1501 | } | |
1502 | ||
1503 | static int | |
fba45db2 | 1504 | threadmatch (threadref *dest, threadref *src) |
c906108c | 1505 | { |
23860348 | 1506 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
1507 | #if 0 |
1508 | unsigned char *srcp, *destp; | |
1509 | int i, result; | |
1510 | srcp = (char *) src; | |
1511 | destp = (char *) dest; | |
1512 | ||
1513 | result = 1; | |
1514 | while (i-- > 0) | |
1515 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
1516 | return result; | |
1517 | #endif | |
1518 | return 1; | |
1519 | } | |
1520 | ||
1521 | /* | |
c5aa993b JM |
1522 | threadid:1, # always request threadid |
1523 | context_exists:2, | |
1524 | display:4, | |
1525 | unique_name:8, | |
1526 | more_display:16 | |
1527 | */ | |
c906108c SS |
1528 | |
1529 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
1530 | ||
1531 | static char * | |
fba45db2 | 1532 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 1533 | { |
23860348 MS |
1534 | *pkt++ = 'q'; /* Info Query */ |
1535 | *pkt++ = 'P'; /* process or thread info */ | |
1536 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 1537 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 1538 | *pkt = '\0'; /* terminate */ |
c906108c SS |
1539 | return pkt; |
1540 | } | |
1541 | ||
23860348 | 1542 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 1543 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 1544 | add more fields as time goes by. */ |
c906108c | 1545 | |
23860348 | 1546 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 1547 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 1548 | fetch registers and its stack? */ |
c5aa993b | 1549 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 1550 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 1551 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 1552 | the process. */ |
c906108c SS |
1553 | |
1554 | static int | |
fba45db2 KB |
1555 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
1556 | struct gdb_ext_thread_info *info) | |
c906108c | 1557 | { |
d01949b6 | 1558 | struct remote_state *rs = get_remote_state (); |
c906108c | 1559 | int mask, length; |
cfd77fa1 | 1560 | int tag; |
c906108c | 1561 | threadref ref; |
6d820c5c | 1562 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
1563 | int retval = 1; |
1564 | ||
23860348 | 1565 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
1566 | info->active = 0; |
1567 | info->display[0] = '\0'; | |
1568 | info->shortname[0] = '\0'; | |
1569 | info->more_display[0] = '\0'; | |
1570 | ||
23860348 MS |
1571 | /* Assume the characters indicating the packet type have been |
1572 | stripped. */ | |
c906108c SS |
1573 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
1574 | pkt = unpack_threadid (pkt, &ref); | |
1575 | ||
1576 | if (mask == 0) | |
8a3fe4f8 | 1577 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 1578 | if (!threadmatch (&ref, expectedref)) |
23860348 | 1579 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 1580 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
1581 | return 0; |
1582 | } | |
1583 | copy_threadref (&info->threadid, &ref); | |
1584 | ||
23860348 | 1585 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 1586 | |
23860348 MS |
1587 | /* Packets are terminated with nulls. */ |
1588 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
1589 | { |
1590 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
1591 | pkt = unpack_byte (pkt, &length); /* length */ |
1592 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 1593 | { |
8a3fe4f8 | 1594 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
1595 | retval = 0; |
1596 | break; | |
1597 | } | |
1598 | if (tag == TAG_THREADID) | |
1599 | { | |
1600 | if (length != 16) | |
1601 | { | |
8a3fe4f8 | 1602 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
1603 | retval = 0; |
1604 | break; | |
1605 | } | |
1606 | pkt = unpack_threadid (pkt, &ref); | |
1607 | mask = mask & ~TAG_THREADID; | |
1608 | continue; | |
1609 | } | |
1610 | if (tag == TAG_EXISTS) | |
1611 | { | |
1612 | info->active = stub_unpack_int (pkt, length); | |
1613 | pkt += length; | |
1614 | mask = mask & ~(TAG_EXISTS); | |
1615 | if (length > 8) | |
1616 | { | |
8a3fe4f8 | 1617 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
1618 | retval = 0; |
1619 | break; | |
1620 | } | |
1621 | continue; | |
1622 | } | |
1623 | if (tag == TAG_THREADNAME) | |
1624 | { | |
1625 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
1626 | mask = mask & ~TAG_THREADNAME; | |
1627 | continue; | |
1628 | } | |
1629 | if (tag == TAG_DISPLAY) | |
1630 | { | |
1631 | pkt = unpack_string (pkt, &info->display[0], length); | |
1632 | mask = mask & ~TAG_DISPLAY; | |
1633 | continue; | |
1634 | } | |
1635 | if (tag == TAG_MOREDISPLAY) | |
1636 | { | |
1637 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
1638 | mask = mask & ~TAG_MOREDISPLAY; | |
1639 | continue; | |
1640 | } | |
8a3fe4f8 | 1641 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 1642 | break; /* Not a tag we know about. */ |
c906108c SS |
1643 | } |
1644 | return retval; | |
1645 | } | |
1646 | ||
1647 | static int | |
fba45db2 KB |
1648 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
1649 | struct gdb_ext_thread_info *info) | |
c906108c | 1650 | { |
d01949b6 | 1651 | struct remote_state *rs = get_remote_state (); |
c906108c | 1652 | int result; |
c906108c | 1653 | |
2e9f7625 DJ |
1654 | pack_threadinfo_request (rs->buf, fieldset, threadid); |
1655 | putpkt (rs->buf); | |
6d820c5c | 1656 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1657 | result = remote_unpack_thread_info_response (rs->buf + 2, |
23860348 | 1658 | threadid, info); |
c906108c SS |
1659 | return result; |
1660 | } | |
1661 | ||
c906108c SS |
1662 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
1663 | ||
1664 | static char * | |
fba45db2 KB |
1665 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
1666 | threadref *nextthread) | |
c906108c SS |
1667 | { |
1668 | *pkt++ = 'q'; /* info query packet */ | |
1669 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 1670 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
1671 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
1672 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
1673 | *pkt = '\0'; | |
1674 | return pkt; | |
1675 | } | |
1676 | ||
1677 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
1678 | ||
1679 | static int | |
fba45db2 KB |
1680 | parse_threadlist_response (char *pkt, int result_limit, |
1681 | threadref *original_echo, threadref *resultlist, | |
1682 | int *doneflag) | |
c906108c | 1683 | { |
d01949b6 | 1684 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1685 | char *limit; |
1686 | int count, resultcount, done; | |
1687 | ||
1688 | resultcount = 0; | |
1689 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 1690 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 1691 | /* done parse past here */ |
c906108c SS |
1692 | pkt = unpack_byte (pkt, &count); /* count field */ |
1693 | pkt = unpack_nibble (pkt, &done); | |
1694 | /* The first threadid is the argument threadid. */ | |
1695 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
1696 | while ((count-- > 0) && (pkt < limit)) | |
1697 | { | |
1698 | pkt = unpack_threadid (pkt, resultlist++); | |
1699 | if (resultcount++ >= result_limit) | |
1700 | break; | |
1701 | } | |
1702 | if (doneflag) | |
1703 | *doneflag = done; | |
1704 | return resultcount; | |
1705 | } | |
1706 | ||
1707 | static int | |
fba45db2 KB |
1708 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
1709 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 1710 | { |
d01949b6 | 1711 | struct remote_state *rs = get_remote_state (); |
c906108c | 1712 | static threadref echo_nextthread; |
c906108c SS |
1713 | int result = 1; |
1714 | ||
23860348 | 1715 | /* Trancate result limit to be smaller than the packet size. */ |
ea9c271d DJ |
1716 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) >= get_remote_packet_size ()) |
1717 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; | |
c906108c | 1718 | |
6d820c5c DJ |
1719 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
1720 | putpkt (rs->buf); | |
1721 | getpkt (&rs->buf, &rs->buf_size, 0); | |
c906108c SS |
1722 | |
1723 | *result_count = | |
6d820c5c | 1724 | parse_threadlist_response (rs->buf + 2, result_limit, &echo_nextthread, |
c906108c SS |
1725 | threadlist, done); |
1726 | ||
1727 | if (!threadmatch (&echo_nextthread, nextthread)) | |
1728 | { | |
23860348 MS |
1729 | /* FIXME: This is a good reason to drop the packet. */ |
1730 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
1731 | /* Possabilities : |
1732 | retransmit immediatly - race conditions | |
1733 | retransmit after timeout - yes | |
1734 | exit | |
1735 | wait for packet, then exit | |
1736 | */ | |
8a3fe4f8 | 1737 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 1738 | return 0; /* I choose simply exiting. */ |
c906108c SS |
1739 | } |
1740 | if (*result_count <= 0) | |
1741 | { | |
1742 | if (*done != 1) | |
1743 | { | |
8a3fe4f8 | 1744 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
1745 | result = 0; |
1746 | } | |
1747 | return result; /* break; */ | |
1748 | } | |
1749 | if (*result_count > result_limit) | |
1750 | { | |
1751 | *result_count = 0; | |
8a3fe4f8 | 1752 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
1753 | return 0; |
1754 | } | |
1755 | return result; | |
1756 | } | |
1757 | ||
23860348 MS |
1758 | /* This is the interface between remote and threads, remotes upper |
1759 | interface. */ | |
c906108c SS |
1760 | |
1761 | /* remote_find_new_threads retrieves the thread list and for each | |
1762 | thread in the list, looks up the thread in GDB's internal list, | |
1763 | ading the thread if it does not already exist. This involves | |
1764 | getting partial thread lists from the remote target so, polling the | |
1765 | quit_flag is required. */ | |
1766 | ||
1767 | ||
23860348 | 1768 | /* About this many threadisds fit in a packet. */ |
c906108c SS |
1769 | |
1770 | #define MAXTHREADLISTRESULTS 32 | |
1771 | ||
1772 | static int | |
fba45db2 KB |
1773 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
1774 | int looplimit) | |
c906108c SS |
1775 | { |
1776 | int done, i, result_count; | |
1777 | int startflag = 1; | |
1778 | int result = 1; | |
1779 | int loopcount = 0; | |
1780 | static threadref nextthread; | |
1781 | static threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
1782 | ||
1783 | done = 0; | |
1784 | while (!done) | |
1785 | { | |
1786 | if (loopcount++ > looplimit) | |
1787 | { | |
1788 | result = 0; | |
8a3fe4f8 | 1789 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
1790 | break; |
1791 | } | |
1792 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS, | |
1793 | &done, &result_count, resultthreadlist)) | |
1794 | { | |
1795 | result = 0; | |
1796 | break; | |
1797 | } | |
23860348 | 1798 | /* Clear for later iterations. */ |
c906108c SS |
1799 | startflag = 0; |
1800 | /* Setup to resume next batch of thread references, set nextthread. */ | |
1801 | if (result_count >= 1) | |
1802 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |
1803 | i = 0; | |
1804 | while (result_count--) | |
1805 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |
1806 | break; | |
1807 | } | |
1808 | return result; | |
1809 | } | |
1810 | ||
1811 | static int | |
fba45db2 | 1812 | remote_newthread_step (threadref *ref, void *context) |
c906108c | 1813 | { |
39f77062 | 1814 | ptid_t ptid; |
c906108c | 1815 | |
39f77062 KB |
1816 | ptid = pid_to_ptid (threadref_to_int (ref)); |
1817 | ||
1818 | if (!in_thread_list (ptid)) | |
1819 | add_thread (ptid); | |
c906108c SS |
1820 | return 1; /* continue iterator */ |
1821 | } | |
1822 | ||
1823 | #define CRAZY_MAX_THREADS 1000 | |
1824 | ||
39f77062 KB |
1825 | static ptid_t |
1826 | remote_current_thread (ptid_t oldpid) | |
c906108c | 1827 | { |
d01949b6 | 1828 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1829 | |
1830 | putpkt ("qC"); | |
6d820c5c | 1831 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1832 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
c273b20f JB |
1833 | /* Use strtoul here, so we'll correctly parse values whose highest |
1834 | bit is set. The protocol carries them as a simple series of | |
1835 | hex digits; in the absence of a sign, strtol will see such | |
1836 | values as positive numbers out of range for signed 'long', and | |
1837 | return LONG_MAX to indicate an overflow. */ | |
2e9f7625 | 1838 | return pid_to_ptid (strtoul (&rs->buf[2], NULL, 16)); |
c906108c SS |
1839 | else |
1840 | return oldpid; | |
1841 | } | |
1842 | ||
802188a7 RM |
1843 | /* Find new threads for info threads command. |
1844 | * Original version, using John Metzler's thread protocol. | |
9d1f7ab2 | 1845 | */ |
cce74817 JM |
1846 | |
1847 | static void | |
fba45db2 | 1848 | remote_find_new_threads (void) |
c906108c | 1849 | { |
c5aa993b JM |
1850 | remote_threadlist_iterator (remote_newthread_step, 0, |
1851 | CRAZY_MAX_THREADS); | |
39f77062 KB |
1852 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) /* ack ack ack */ |
1853 | inferior_ptid = remote_current_thread (inferior_ptid); | |
c906108c SS |
1854 | } |
1855 | ||
9d1f7ab2 MS |
1856 | /* |
1857 | * Find all threads for info threads command. | |
1858 | * Uses new thread protocol contributed by Cisco. | |
1859 | * Falls back and attempts to use the older method (above) | |
1860 | * if the target doesn't respond to the new method. | |
1861 | */ | |
1862 | ||
0f71a2f6 JM |
1863 | static void |
1864 | remote_threads_info (void) | |
1865 | { | |
d01949b6 | 1866 | struct remote_state *rs = get_remote_state (); |
085dd6e6 | 1867 | char *bufp; |
0f71a2f6 JM |
1868 | int tid; |
1869 | ||
1870 | if (remote_desc == 0) /* paranoia */ | |
8a3fe4f8 | 1871 | error (_("Command can only be used when connected to the remote target.")); |
0f71a2f6 | 1872 | |
9d1f7ab2 MS |
1873 | if (use_threadinfo_query) |
1874 | { | |
1875 | putpkt ("qfThreadInfo"); | |
6d820c5c | 1876 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1877 | bufp = rs->buf; |
9d1f7ab2 | 1878 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 1879 | { |
9d1f7ab2 MS |
1880 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
1881 | { | |
1882 | do | |
1883 | { | |
c273b20f JB |
1884 | /* Use strtoul here, so we'll correctly parse values |
1885 | whose highest bit is set. The protocol carries | |
1886 | them as a simple series of hex digits; in the | |
1887 | absence of a sign, strtol will see such values as | |
1888 | positive numbers out of range for signed 'long', | |
1889 | and return LONG_MAX to indicate an overflow. */ | |
1890 | tid = strtoul (bufp, &bufp, 16); | |
39f77062 KB |
1891 | if (tid != 0 && !in_thread_list (pid_to_ptid (tid))) |
1892 | add_thread (pid_to_ptid (tid)); | |
9d1f7ab2 MS |
1893 | } |
1894 | while (*bufp++ == ','); /* comma-separated list */ | |
1895 | putpkt ("qsThreadInfo"); | |
6d820c5c | 1896 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1897 | bufp = rs->buf; |
9d1f7ab2 MS |
1898 | } |
1899 | return; /* done */ | |
1900 | } | |
1901 | } | |
1902 | ||
23860348 | 1903 | /* Else fall back to old method based on jmetzler protocol. */ |
9d1f7ab2 MS |
1904 | use_threadinfo_query = 0; |
1905 | remote_find_new_threads (); | |
1906 | return; | |
1907 | } | |
1908 | ||
802188a7 | 1909 | /* |
9d1f7ab2 MS |
1910 | * Collect a descriptive string about the given thread. |
1911 | * The target may say anything it wants to about the thread | |
1912 | * (typically info about its blocked / runnable state, name, etc.). | |
1913 | * This string will appear in the info threads display. | |
802188a7 | 1914 | * |
9d1f7ab2 MS |
1915 | * Optional: targets are not required to implement this function. |
1916 | */ | |
1917 | ||
1918 | static char * | |
1919 | remote_threads_extra_info (struct thread_info *tp) | |
1920 | { | |
d01949b6 | 1921 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
1922 | int result; |
1923 | int set; | |
1924 | threadref id; | |
1925 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 1926 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
1927 | int n = 0; /* position in display_buf */ |
1928 | ||
1929 | if (remote_desc == 0) /* paranoia */ | |
8e65ff28 | 1930 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 1931 | _("remote_threads_extra_info")); |
9d1f7ab2 MS |
1932 | |
1933 | if (use_threadextra_query) | |
1934 | { | |
2e9f7625 | 1935 | xsnprintf (rs->buf, get_remote_packet_size (), "qThreadExtraInfo,%x", |
ecbc58df | 1936 | PIDGET (tp->ptid)); |
2e9f7625 | 1937 | putpkt (rs->buf); |
6d820c5c | 1938 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1939 | if (rs->buf[0] != 0) |
9d1f7ab2 | 1940 | { |
2e9f7625 DJ |
1941 | n = min (strlen (rs->buf) / 2, sizeof (display_buf)); |
1942 | result = hex2bin (rs->buf, (gdb_byte *) display_buf, n); | |
30559e10 | 1943 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
1944 | return display_buf; |
1945 | } | |
0f71a2f6 | 1946 | } |
9d1f7ab2 MS |
1947 | |
1948 | /* If the above query fails, fall back to the old method. */ | |
1949 | use_threadextra_query = 0; | |
1950 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
1951 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
39f77062 | 1952 | int_to_threadref (&id, PIDGET (tp->ptid)); |
9d1f7ab2 MS |
1953 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
1954 | if (threadinfo.active) | |
0f71a2f6 | 1955 | { |
9d1f7ab2 | 1956 | if (*threadinfo.shortname) |
2bc416ba | 1957 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
ecbc58df | 1958 | " Name: %s,", threadinfo.shortname); |
9d1f7ab2 | 1959 | if (*threadinfo.display) |
2bc416ba | 1960 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 1961 | " State: %s,", threadinfo.display); |
9d1f7ab2 | 1962 | if (*threadinfo.more_display) |
2bc416ba | 1963 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 1964 | " Priority: %s", threadinfo.more_display); |
9d1f7ab2 MS |
1965 | |
1966 | if (n > 0) | |
c5aa993b | 1967 | { |
23860348 | 1968 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
1969 | if (',' == display_buf[n-1]) |
1970 | display_buf[n-1] = ' '; | |
1971 | return display_buf; | |
c5aa993b | 1972 | } |
0f71a2f6 | 1973 | } |
9d1f7ab2 | 1974 | return NULL; |
0f71a2f6 | 1975 | } |
c906108c | 1976 | \f |
c5aa993b | 1977 | |
24b06219 | 1978 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
1979 | |
1980 | static void | |
fba45db2 | 1981 | extended_remote_restart (void) |
c906108c | 1982 | { |
d01949b6 | 1983 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1984 | |
1985 | /* Send the restart command; for reasons I don't understand the | |
1986 | remote side really expects a number after the "R". */ | |
ea9c271d | 1987 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); |
6d820c5c | 1988 | putpkt (rs->buf); |
c906108c | 1989 | |
ad9a8f3f | 1990 | remote_fileio_reset (); |
2bc416ba | 1991 | |
c906108c SS |
1992 | /* Now query for status so this looks just like we restarted |
1993 | gdbserver from scratch. */ | |
1994 | putpkt ("?"); | |
01d3a6ce | 1995 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c SS |
1996 | } |
1997 | \f | |
1998 | /* Clean up connection to a remote debugger. */ | |
1999 | ||
c906108c | 2000 | static void |
fba45db2 | 2001 | remote_close (int quitting) |
c906108c SS |
2002 | { |
2003 | if (remote_desc) | |
2cd58942 | 2004 | serial_close (remote_desc); |
c906108c SS |
2005 | remote_desc = NULL; |
2006 | } | |
2007 | ||
23860348 | 2008 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
2009 | |
2010 | static void | |
fba45db2 | 2011 | get_offsets (void) |
c906108c | 2012 | { |
d01949b6 | 2013 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 2014 | char *buf; |
085dd6e6 | 2015 | char *ptr; |
31d99776 DJ |
2016 | int lose, num_segments = 0, do_sections, do_segments; |
2017 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
c906108c | 2018 | struct section_offsets *offs; |
31d99776 DJ |
2019 | struct symfile_segment_data *data; |
2020 | ||
2021 | if (symfile_objfile == NULL) | |
2022 | return; | |
c906108c SS |
2023 | |
2024 | putpkt ("qOffsets"); | |
6d820c5c | 2025 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2026 | buf = rs->buf; |
c906108c SS |
2027 | |
2028 | if (buf[0] == '\000') | |
2029 | return; /* Return silently. Stub doesn't support | |
23860348 | 2030 | this command. */ |
c906108c SS |
2031 | if (buf[0] == 'E') |
2032 | { | |
8a3fe4f8 | 2033 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
2034 | return; |
2035 | } | |
2036 | ||
2037 | /* Pick up each field in turn. This used to be done with scanf, but | |
2038 | scanf will make trouble if CORE_ADDR size doesn't match | |
2039 | conversion directives correctly. The following code will work | |
2040 | with any size of CORE_ADDR. */ | |
2041 | text_addr = data_addr = bss_addr = 0; | |
2042 | ptr = buf; | |
2043 | lose = 0; | |
2044 | ||
2045 | if (strncmp (ptr, "Text=", 5) == 0) | |
2046 | { | |
2047 | ptr += 5; | |
2048 | /* Don't use strtol, could lose on big values. */ | |
2049 | while (*ptr && *ptr != ';') | |
2050 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 2051 | |
31d99776 DJ |
2052 | if (strncmp (ptr, ";Data=", 6) == 0) |
2053 | { | |
2054 | ptr += 6; | |
2055 | while (*ptr && *ptr != ';') | |
2056 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
2057 | } | |
2058 | else | |
2059 | lose = 1; | |
2060 | ||
2061 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
2062 | { | |
2063 | ptr += 5; | |
2064 | while (*ptr && *ptr != ';') | |
2065 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 2066 | |
31d99776 DJ |
2067 | if (bss_addr != data_addr) |
2068 | warning (_("Target reported unsupported offsets: %s"), buf); | |
2069 | } | |
2070 | else | |
2071 | lose = 1; | |
2072 | } | |
2073 | else if (strncmp (ptr, "TextSeg=", 8) == 0) | |
c906108c | 2074 | { |
31d99776 DJ |
2075 | ptr += 8; |
2076 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 2077 | while (*ptr && *ptr != ';') |
31d99776 DJ |
2078 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
2079 | num_segments = 1; | |
2080 | ||
2081 | if (strncmp (ptr, ";DataSeg=", 9) == 0) | |
2082 | { | |
2083 | ptr += 9; | |
2084 | while (*ptr && *ptr != ';') | |
2085 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
2086 | num_segments++; | |
2087 | } | |
c906108c SS |
2088 | } |
2089 | else | |
2090 | lose = 1; | |
2091 | ||
2092 | if (lose) | |
8a3fe4f8 | 2093 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
2094 | else if (*ptr != '\0') |
2095 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 2096 | |
802188a7 | 2097 | offs = ((struct section_offsets *) |
a39a16c4 | 2098 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 2099 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 2100 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 2101 | |
31d99776 DJ |
2102 | data = get_symfile_segment_data (symfile_objfile->obfd); |
2103 | do_segments = (data != NULL); | |
2104 | do_sections = num_segments == 0; | |
c906108c | 2105 | |
28c32713 | 2106 | if (num_segments > 0) |
31d99776 | 2107 | { |
31d99776 DJ |
2108 | segments[0] = text_addr; |
2109 | segments[1] = data_addr; | |
2110 | } | |
28c32713 JB |
2111 | /* If we have two segments, we can still try to relocate everything |
2112 | by assuming that the .text and .data offsets apply to the whole | |
2113 | text and data segments. Convert the offsets given in the packet | |
2114 | to base addresses for symfile_map_offsets_to_segments. */ | |
2115 | else if (data && data->num_segments == 2) | |
2116 | { | |
2117 | segments[0] = data->segment_bases[0] + text_addr; | |
2118 | segments[1] = data->segment_bases[1] + data_addr; | |
2119 | num_segments = 2; | |
2120 | } | |
2121 | /* There's no way to relocate by segment. */ | |
2122 | else | |
2123 | do_segments = 0; | |
31d99776 DJ |
2124 | |
2125 | if (do_segments) | |
2126 | { | |
2127 | int ret = symfile_map_offsets_to_segments (symfile_objfile->obfd, data, | |
2128 | offs, num_segments, segments); | |
2129 | ||
2130 | if (ret == 0 && !do_sections) | |
2131 | error (_("Can not handle qOffsets TextSeg response with this symbol file")); | |
2132 | ||
2133 | if (ret > 0) | |
2134 | do_sections = 0; | |
2135 | } | |
c906108c | 2136 | |
9ef895d6 DJ |
2137 | if (data) |
2138 | free_symfile_segment_data (data); | |
31d99776 DJ |
2139 | |
2140 | if (do_sections) | |
2141 | { | |
2142 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; | |
2143 | ||
2144 | /* This is a temporary kludge to force data and bss to use the same offsets | |
2145 | because that's what nlmconv does now. The real solution requires changes | |
2146 | to the stub and remote.c that I don't have time to do right now. */ | |
2147 | ||
2148 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; | |
2149 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
2150 | } | |
c906108c SS |
2151 | |
2152 | objfile_relocate (symfile_objfile, offs); | |
2153 | } | |
2154 | ||
8621d6a9 | 2155 | /* Stub for catch_exception. */ |
0f71a2f6 | 2156 | |
9cbc821d | 2157 | static void |
8621d6a9 | 2158 | remote_start_remote (struct ui_out *uiout, void *from_tty_p) |
c906108c | 2159 | { |
8621d6a9 DJ |
2160 | int from_tty = * (int *) from_tty_p; |
2161 | ||
23860348 | 2162 | immediate_quit++; /* Allow user to interrupt it. */ |
c906108c SS |
2163 | |
2164 | /* Ack any packet which the remote side has already sent. */ | |
2cd58942 | 2165 | serial_write (remote_desc, "+", 1); |
c906108c SS |
2166 | |
2167 | /* Let the stub know that we want it to return the thread. */ | |
2168 | set_thread (-1, 0); | |
2169 | ||
39f77062 | 2170 | inferior_ptid = remote_current_thread (inferior_ptid); |
c906108c | 2171 | |
23860348 | 2172 | get_offsets (); /* Get text, data & bss offsets. */ |
c906108c | 2173 | |
23860348 | 2174 | putpkt ("?"); /* Initiate a query from remote machine. */ |
8edbea78 | 2175 | immediate_quit--; |
c906108c | 2176 | |
8621d6a9 | 2177 | start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
c906108c SS |
2178 | } |
2179 | ||
2180 | /* Open a connection to a remote debugger. | |
2181 | NAME is the filename used for communication. */ | |
2182 | ||
2183 | static void | |
fba45db2 | 2184 | remote_open (char *name, int from_tty) |
c906108c | 2185 | { |
92d1e331 | 2186 | remote_open_1 (name, from_tty, &remote_ops, 0, 0); |
c906108c SS |
2187 | } |
2188 | ||
23860348 | 2189 | /* Just like remote_open, but with asynchronous support. */ |
43ff13b4 | 2190 | static void |
fba45db2 | 2191 | remote_async_open (char *name, int from_tty) |
43ff13b4 | 2192 | { |
92d1e331 | 2193 | remote_open_1 (name, from_tty, &remote_async_ops, 0, 1); |
43ff13b4 JM |
2194 | } |
2195 | ||
c906108c SS |
2196 | /* Open a connection to a remote debugger using the extended |
2197 | remote gdb protocol. NAME is the filename used for communication. */ | |
2198 | ||
2199 | static void | |
fba45db2 | 2200 | extended_remote_open (char *name, int from_tty) |
c906108c | 2201 | { |
92d1e331 DJ |
2202 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */, |
2203 | 0 /* async_p */); | |
c906108c SS |
2204 | } |
2205 | ||
23860348 | 2206 | /* Just like extended_remote_open, but with asynchronous support. */ |
43ff13b4 | 2207 | static void |
fba45db2 | 2208 | extended_remote_async_open (char *name, int from_tty) |
43ff13b4 | 2209 | { |
92d1e331 DJ |
2210 | remote_open_1 (name, from_tty, &extended_async_remote_ops, |
2211 | 1 /*extended_p */, 1 /* async_p */); | |
43ff13b4 JM |
2212 | } |
2213 | ||
c906108c SS |
2214 | /* Generic code for opening a connection to a remote target. */ |
2215 | ||
d471ea57 AC |
2216 | static void |
2217 | init_all_packet_configs (void) | |
2218 | { | |
2219 | int i; | |
444abaca DJ |
2220 | for (i = 0; i < PACKET_MAX; i++) |
2221 | update_packet_config (&remote_protocol_packets[i]); | |
d471ea57 AC |
2222 | } |
2223 | ||
23860348 | 2224 | /* Symbol look-up. */ |
dc8acb97 MS |
2225 | |
2226 | static void | |
2227 | remote_check_symbols (struct objfile *objfile) | |
2228 | { | |
d01949b6 | 2229 | struct remote_state *rs = get_remote_state (); |
dc8acb97 MS |
2230 | char *msg, *reply, *tmp; |
2231 | struct minimal_symbol *sym; | |
2232 | int end; | |
2233 | ||
444abaca | 2234 | if (remote_protocol_packets[PACKET_qSymbol].support == PACKET_DISABLE) |
dc8acb97 MS |
2235 | return; |
2236 | ||
6d820c5c DJ |
2237 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
2238 | because we need both at the same time. */ | |
ea9c271d | 2239 | msg = alloca (get_remote_packet_size ()); |
6d820c5c | 2240 | |
23860348 | 2241 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
2242 | |
2243 | putpkt ("qSymbol::"); | |
6d820c5c DJ |
2244 | getpkt (&rs->buf, &rs->buf_size, 0); |
2245 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSymbol]); | |
2e9f7625 | 2246 | reply = rs->buf; |
dc8acb97 MS |
2247 | |
2248 | while (strncmp (reply, "qSymbol:", 8) == 0) | |
2249 | { | |
2250 | tmp = &reply[8]; | |
cfd77fa1 | 2251 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
2252 | msg[end] = '\0'; |
2253 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
2254 | if (sym == NULL) | |
ea9c271d | 2255 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
dc8acb97 | 2256 | else |
2bbe3cc1 DJ |
2257 | { |
2258 | CORE_ADDR sym_addr = SYMBOL_VALUE_ADDRESS (sym); | |
2259 | ||
2260 | /* If this is a function address, return the start of code | |
2261 | instead of any data function descriptor. */ | |
2262 | sym_addr = gdbarch_convert_from_func_ptr_addr (current_gdbarch, | |
2263 | sym_addr, | |
2264 | ¤t_target); | |
2265 | ||
2266 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", | |
2267 | paddr_nz (sym_addr), &reply[8]); | |
2268 | } | |
2269 | ||
dc8acb97 | 2270 | putpkt (msg); |
6d820c5c | 2271 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2272 | reply = rs->buf; |
dc8acb97 MS |
2273 | } |
2274 | } | |
2275 | ||
9db8d71f DJ |
2276 | static struct serial * |
2277 | remote_serial_open (char *name) | |
2278 | { | |
2279 | static int udp_warning = 0; | |
2280 | ||
2281 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
2282 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
2283 | serial connection is reliable and not the serial connection promising | |
2284 | to be. */ | |
2285 | if (!udp_warning && strncmp (name, "udp:", 4) == 0) | |
2286 | { | |
8a3fe4f8 AC |
2287 | warning (_("\ |
2288 | The remote protocol may be unreliable over UDP.\n\ | |
2289 | Some events may be lost, rendering further debugging impossible.")); | |
9db8d71f DJ |
2290 | udp_warning = 1; |
2291 | } | |
2292 | ||
2293 | return serial_open (name); | |
2294 | } | |
2295 | ||
be2a5f71 DJ |
2296 | /* This type describes each known response to the qSupported |
2297 | packet. */ | |
2298 | struct protocol_feature | |
2299 | { | |
2300 | /* The name of this protocol feature. */ | |
2301 | const char *name; | |
2302 | ||
2303 | /* The default for this protocol feature. */ | |
2304 | enum packet_support default_support; | |
2305 | ||
2306 | /* The function to call when this feature is reported, or after | |
2307 | qSupported processing if the feature is not supported. | |
2308 | The first argument points to this structure. The second | |
2309 | argument indicates whether the packet requested support be | |
2310 | enabled, disabled, or probed (or the default, if this function | |
2311 | is being called at the end of processing and this feature was | |
2312 | not reported). The third argument may be NULL; if not NULL, it | |
2313 | is a NUL-terminated string taken from the packet following | |
2314 | this feature's name and an equals sign. */ | |
2315 | void (*func) (const struct protocol_feature *, enum packet_support, | |
2316 | const char *); | |
2317 | ||
2318 | /* The corresponding packet for this feature. Only used if | |
2319 | FUNC is remote_supported_packet. */ | |
2320 | int packet; | |
2321 | }; | |
2322 | ||
be2a5f71 DJ |
2323 | static void |
2324 | remote_supported_packet (const struct protocol_feature *feature, | |
2325 | enum packet_support support, | |
2326 | const char *argument) | |
2327 | { | |
2328 | if (argument) | |
2329 | { | |
2330 | warning (_("Remote qSupported response supplied an unexpected value for" | |
2331 | " \"%s\"."), feature->name); | |
2332 | return; | |
2333 | } | |
2334 | ||
2335 | if (remote_protocol_packets[feature->packet].support | |
2336 | == PACKET_SUPPORT_UNKNOWN) | |
2337 | remote_protocol_packets[feature->packet].support = support; | |
2338 | } | |
be2a5f71 DJ |
2339 | |
2340 | static void | |
2341 | remote_packet_size (const struct protocol_feature *feature, | |
2342 | enum packet_support support, const char *value) | |
2343 | { | |
2344 | struct remote_state *rs = get_remote_state (); | |
2345 | ||
2346 | int packet_size; | |
2347 | char *value_end; | |
2348 | ||
2349 | if (support != PACKET_ENABLE) | |
2350 | return; | |
2351 | ||
2352 | if (value == NULL || *value == '\0') | |
2353 | { | |
2354 | warning (_("Remote target reported \"%s\" without a size."), | |
2355 | feature->name); | |
2356 | return; | |
2357 | } | |
2358 | ||
2359 | errno = 0; | |
2360 | packet_size = strtol (value, &value_end, 16); | |
2361 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
2362 | { | |
2363 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
2364 | feature->name, value); | |
2365 | return; | |
2366 | } | |
2367 | ||
2368 | if (packet_size > MAX_REMOTE_PACKET_SIZE) | |
2369 | { | |
2370 | warning (_("limiting remote suggested packet size (%d bytes) to %d"), | |
2371 | packet_size, MAX_REMOTE_PACKET_SIZE); | |
2372 | packet_size = MAX_REMOTE_PACKET_SIZE; | |
2373 | } | |
2374 | ||
2375 | /* Record the new maximum packet size. */ | |
2376 | rs->explicit_packet_size = packet_size; | |
2377 | } | |
2378 | ||
2379 | static struct protocol_feature remote_protocol_features[] = { | |
0876f84a | 2380 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 2381 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 2382 | PACKET_qXfer_auxv }, |
23181151 DJ |
2383 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
2384 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
2385 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
2386 | PACKET_qXfer_libraries }, | |
fd79ecee | 2387 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 2388 | PACKET_qXfer_memory_map }, |
4de6483e UW |
2389 | { "qXfer:spu:read", PACKET_DISABLE, remote_supported_packet, |
2390 | PACKET_qXfer_spu_read }, | |
2391 | { "qXfer:spu:write", PACKET_DISABLE, remote_supported_packet, | |
2392 | PACKET_qXfer_spu_write }, | |
89be2091 DJ |
2393 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
2394 | PACKET_QPassSignals }, | |
be2a5f71 DJ |
2395 | }; |
2396 | ||
2397 | static void | |
2398 | remote_query_supported (void) | |
2399 | { | |
2400 | struct remote_state *rs = get_remote_state (); | |
2401 | char *next; | |
2402 | int i; | |
2403 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
2404 | ||
2405 | /* The packet support flags are handled differently for this packet | |
2406 | than for most others. We treat an error, a disabled packet, and | |
2407 | an empty response identically: any features which must be reported | |
2408 | to be used will be automatically disabled. An empty buffer | |
2409 | accomplishes this, since that is also the representation for a list | |
2410 | containing no features. */ | |
2411 | ||
2412 | rs->buf[0] = 0; | |
2413 | if (remote_protocol_packets[PACKET_qSupported].support != PACKET_DISABLE) | |
2414 | { | |
2415 | putpkt ("qSupported"); | |
2416 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2417 | ||
2418 | /* If an error occured, warn, but do not return - just reset the | |
2419 | buffer to empty and go on to disable features. */ | |
2420 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
2421 | == PACKET_ERROR) | |
2422 | { | |
2423 | warning (_("Remote failure reply: %s"), rs->buf); | |
2424 | rs->buf[0] = 0; | |
2425 | } | |
2426 | } | |
2427 | ||
2428 | memset (seen, 0, sizeof (seen)); | |
2429 | ||
2430 | next = rs->buf; | |
2431 | while (*next) | |
2432 | { | |
2433 | enum packet_support is_supported; | |
2434 | char *p, *end, *name_end, *value; | |
2435 | ||
2436 | /* First separate out this item from the rest of the packet. If | |
2437 | there's another item after this, we overwrite the separator | |
2438 | (terminated strings are much easier to work with). */ | |
2439 | p = next; | |
2440 | end = strchr (p, ';'); | |
2441 | if (end == NULL) | |
2442 | { | |
2443 | end = p + strlen (p); | |
2444 | next = end; | |
2445 | } | |
2446 | else | |
2447 | { | |
89be2091 DJ |
2448 | *end = '\0'; |
2449 | next = end + 1; | |
2450 | ||
be2a5f71 DJ |
2451 | if (end == p) |
2452 | { | |
2453 | warning (_("empty item in \"qSupported\" response")); | |
2454 | continue; | |
2455 | } | |
be2a5f71 DJ |
2456 | } |
2457 | ||
2458 | name_end = strchr (p, '='); | |
2459 | if (name_end) | |
2460 | { | |
2461 | /* This is a name=value entry. */ | |
2462 | is_supported = PACKET_ENABLE; | |
2463 | value = name_end + 1; | |
2464 | *name_end = '\0'; | |
2465 | } | |
2466 | else | |
2467 | { | |
2468 | value = NULL; | |
2469 | switch (end[-1]) | |
2470 | { | |
2471 | case '+': | |
2472 | is_supported = PACKET_ENABLE; | |
2473 | break; | |
2474 | ||
2475 | case '-': | |
2476 | is_supported = PACKET_DISABLE; | |
2477 | break; | |
2478 | ||
2479 | case '?': | |
2480 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
2481 | break; | |
2482 | ||
2483 | default: | |
2484 | warning (_("unrecognized item \"%s\" in \"qSupported\" response"), p); | |
2485 | continue; | |
2486 | } | |
2487 | end[-1] = '\0'; | |
2488 | } | |
2489 | ||
2490 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
2491 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
2492 | { | |
2493 | const struct protocol_feature *feature; | |
2494 | ||
2495 | seen[i] = 1; | |
2496 | feature = &remote_protocol_features[i]; | |
2497 | feature->func (feature, is_supported, value); | |
2498 | break; | |
2499 | } | |
2500 | } | |
2501 | ||
2502 | /* If we increased the packet size, make sure to increase the global | |
2503 | buffer size also. We delay this until after parsing the entire | |
2504 | qSupported packet, because this is the same buffer we were | |
2505 | parsing. */ | |
2506 | if (rs->buf_size < rs->explicit_packet_size) | |
2507 | { | |
2508 | rs->buf_size = rs->explicit_packet_size; | |
2509 | rs->buf = xrealloc (rs->buf, rs->buf_size); | |
2510 | } | |
2511 | ||
2512 | /* Handle the defaults for unmentioned features. */ | |
2513 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
2514 | if (!seen[i]) | |
2515 | { | |
2516 | const struct protocol_feature *feature; | |
2517 | ||
2518 | feature = &remote_protocol_features[i]; | |
2519 | feature->func (feature, feature->default_support, NULL); | |
2520 | } | |
2521 | } | |
2522 | ||
2523 | ||
c906108c | 2524 | static void |
fba45db2 | 2525 | remote_open_1 (char *name, int from_tty, struct target_ops *target, |
92d1e331 | 2526 | int extended_p, int async_p) |
c906108c | 2527 | { |
d01949b6 | 2528 | struct remote_state *rs = get_remote_state (); |
c906108c | 2529 | if (name == 0) |
8a3fe4f8 | 2530 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 2531 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 2532 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 2533 | |
23860348 | 2534 | /* See FIXME above. */ |
92d1e331 DJ |
2535 | if (!async_p) |
2536 | wait_forever_enabled_p = 1; | |
6426a772 | 2537 | |
c906108c SS |
2538 | target_preopen (from_tty); |
2539 | ||
2540 | unpush_target (target); | |
2541 | ||
89be2091 DJ |
2542 | /* Make sure we send the passed signals list the next time we resume. */ |
2543 | xfree (last_pass_packet); | |
2544 | last_pass_packet = NULL; | |
2545 | ||
ad9a8f3f | 2546 | remote_fileio_reset (); |
1dd41f16 NS |
2547 | reopen_exec_file (); |
2548 | reread_symbols (); | |
2549 | ||
9db8d71f | 2550 | remote_desc = remote_serial_open (name); |
c906108c SS |
2551 | if (!remote_desc) |
2552 | perror_with_name (name); | |
2553 | ||
2554 | if (baud_rate != -1) | |
2555 | { | |
2cd58942 | 2556 | if (serial_setbaudrate (remote_desc, baud_rate)) |
c906108c | 2557 | { |
9b74d5d3 KB |
2558 | /* The requested speed could not be set. Error out to |
2559 | top level after closing remote_desc. Take care to | |
2560 | set remote_desc to NULL to avoid closing remote_desc | |
2561 | more than once. */ | |
2cd58942 | 2562 | serial_close (remote_desc); |
9b74d5d3 | 2563 | remote_desc = NULL; |
c906108c SS |
2564 | perror_with_name (name); |
2565 | } | |
2566 | } | |
2567 | ||
2cd58942 | 2568 | serial_raw (remote_desc); |
c906108c SS |
2569 | |
2570 | /* If there is something sitting in the buffer we might take it as a | |
2571 | response to a command, which would be bad. */ | |
2cd58942 | 2572 | serial_flush_input (remote_desc); |
c906108c SS |
2573 | |
2574 | if (from_tty) | |
2575 | { | |
2576 | puts_filtered ("Remote debugging using "); | |
2577 | puts_filtered (name); | |
2578 | puts_filtered ("\n"); | |
2579 | } | |
23860348 | 2580 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 2581 | |
be2a5f71 DJ |
2582 | /* Reset the target state; these things will be queried either by |
2583 | remote_query_supported or as they are needed. */ | |
d471ea57 | 2584 | init_all_packet_configs (); |
be2a5f71 | 2585 | rs->explicit_packet_size = 0; |
802188a7 | 2586 | |
c5aa993b | 2587 | general_thread = -2; |
cce74817 | 2588 | continue_thread = -2; |
c906108c | 2589 | |
9d1f7ab2 MS |
2590 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
2591 | use_threadinfo_query = 1; | |
2592 | use_threadextra_query = 1; | |
2593 | ||
be2a5f71 DJ |
2594 | /* The first packet we send to the target is the optional "supported |
2595 | packets" request. If the target can answer this, it will tell us | |
2596 | which later probes to skip. */ | |
2597 | remote_query_supported (); | |
2598 | ||
424163ea DJ |
2599 | /* Next, if the target can specify a description, read it. We do |
2600 | this before anything involving memory or registers. */ | |
2601 | target_find_description (); | |
2602 | ||
c906108c SS |
2603 | /* Without this, some commands which require an active target (such |
2604 | as kill) won't work. This variable serves (at least) double duty | |
2605 | as both the pid of the target process (if it has such), and as a | |
2606 | flag indicating that a target is active. These functions should | |
2607 | be split out into seperate variables, especially since GDB will | |
2608 | someday have a notion of debugging several processes. */ | |
2609 | ||
39f77062 | 2610 | inferior_ptid = pid_to_ptid (MAGIC_NULL_PID); |
92d1e331 DJ |
2611 | |
2612 | if (async_p) | |
2613 | { | |
23860348 | 2614 | /* With this target we start out by owning the terminal. */ |
92d1e331 DJ |
2615 | remote_async_terminal_ours_p = 1; |
2616 | ||
2617 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
2618 | assumed that the target is already ready and able to respond to | |
2619 | requests. Unfortunately remote_start_remote() eventually calls | |
2620 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets | |
2621 | around this. Eventually a mechanism that allows | |
2622 | wait_for_inferior() to expect/get timeouts will be | |
23860348 | 2623 | implemented. */ |
92d1e331 DJ |
2624 | wait_forever_enabled_p = 0; |
2625 | } | |
2626 | ||
23860348 | 2627 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 2628 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 2629 | |
36918e70 | 2630 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
2631 | target (we'd otherwise be in an inconsistent state) and then |
2632 | propogate the error on up the exception chain. This ensures that | |
2633 | the caller doesn't stumble along blindly assuming that the | |
2634 | function succeeded. The CLI doesn't have this problem but other | |
2635 | UI's, such as MI do. | |
36918e70 AC |
2636 | |
2637 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
2638 | this function should return an error indication letting the | |
ce2826aa | 2639 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
2640 | ``target remote'' is directly wired to this function making that |
2641 | impossible. On a positive note, the CLI side of this problem has | |
2642 | been fixed - the function set_cmd_context() makes it possible for | |
2643 | all the ``target ....'' commands to share a common callback | |
2644 | function. See cli-dump.c. */ | |
109c3e39 AC |
2645 | { |
2646 | struct gdb_exception ex | |
8621d6a9 DJ |
2647 | = catch_exception (uiout, remote_start_remote, &from_tty, |
2648 | RETURN_MASK_ALL); | |
109c3e39 AC |
2649 | if (ex.reason < 0) |
2650 | { | |
2651 | pop_target (); | |
2652 | if (async_p) | |
2653 | wait_forever_enabled_p = 1; | |
2654 | throw_exception (ex); | |
2655 | } | |
2656 | } | |
c906108c | 2657 | |
92d1e331 DJ |
2658 | if (async_p) |
2659 | wait_forever_enabled_p = 1; | |
6426a772 JM |
2660 | |
2661 | if (extended_p) | |
43ff13b4 | 2662 | { |
6240bebf | 2663 | /* Tell the remote that we are using the extended protocol. */ |
6426a772 | 2664 | putpkt ("!"); |
6d820c5c | 2665 | getpkt (&rs->buf, &rs->buf_size, 0); |
43ff13b4 | 2666 | } |
a77053c2 | 2667 | |
23860348 | 2668 | if (exec_bfd) /* No use without an exec file. */ |
9353355f | 2669 | remote_check_symbols (symfile_objfile); |
43ff13b4 JM |
2670 | } |
2671 | ||
c906108c SS |
2672 | /* This takes a program previously attached to and detaches it. After |
2673 | this is done, GDB can be used to debug some other program. We | |
2674 | better not have left any breakpoints in the target program or it'll | |
2675 | die when it hits one. */ | |
2676 | ||
2677 | static void | |
fba45db2 | 2678 | remote_detach (char *args, int from_tty) |
c906108c | 2679 | { |
d01949b6 | 2680 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2681 | |
2682 | if (args) | |
8a3fe4f8 | 2683 | error (_("Argument given to \"detach\" when remotely debugging.")); |
c906108c SS |
2684 | |
2685 | /* Tell the remote target to detach. */ | |
6d820c5c | 2686 | strcpy (rs->buf, "D"); |
4ddda9b5 PA |
2687 | putpkt (rs->buf); |
2688 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2689 | ||
2690 | if (rs->buf[0] == 'E') | |
2691 | error (_("Can't detach process.")); | |
c906108c | 2692 | |
23860348 | 2693 | /* Unregister the file descriptor from the event loop. */ |
6ad8ae5c DJ |
2694 | if (target_is_async_p ()) |
2695 | serial_async (remote_desc, NULL, 0); | |
2696 | ||
cca728d0 | 2697 | target_mourn_inferior (); |
c906108c SS |
2698 | if (from_tty) |
2699 | puts_filtered ("Ending remote debugging.\n"); | |
2700 | } | |
2701 | ||
6ad8ae5c DJ |
2702 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
2703 | ||
43ff13b4 | 2704 | static void |
597320e7 | 2705 | remote_disconnect (struct target_ops *target, char *args, int from_tty) |
43ff13b4 | 2706 | { |
43ff13b4 | 2707 | if (args) |
8a3fe4f8 | 2708 | error (_("Argument given to \"detach\" when remotely debugging.")); |
43ff13b4 | 2709 | |
23860348 | 2710 | /* Unregister the file descriptor from the event loop. */ |
ed9a39eb | 2711 | if (target_is_async_p ()) |
2cd58942 | 2712 | serial_async (remote_desc, NULL, 0); |
43ff13b4 | 2713 | |
cca728d0 | 2714 | target_mourn_inferior (); |
43ff13b4 JM |
2715 | if (from_tty) |
2716 | puts_filtered ("Ending remote debugging.\n"); | |
2717 | } | |
2718 | ||
c906108c SS |
2719 | /* Convert hex digit A to a number. */ |
2720 | ||
30559e10 | 2721 | static int |
fba45db2 | 2722 | fromhex (int a) |
c906108c SS |
2723 | { |
2724 | if (a >= '0' && a <= '9') | |
2725 | return a - '0'; | |
2726 | else if (a >= 'a' && a <= 'f') | |
2727 | return a - 'a' + 10; | |
2728 | else if (a >= 'A' && a <= 'F') | |
2729 | return a - 'A' + 10; | |
c5aa993b | 2730 | else |
8a3fe4f8 | 2731 | error (_("Reply contains invalid hex digit %d"), a); |
c906108c SS |
2732 | } |
2733 | ||
30559e10 | 2734 | static int |
cfd77fa1 | 2735 | hex2bin (const char *hex, gdb_byte *bin, int count) |
30559e10 MS |
2736 | { |
2737 | int i; | |
2738 | ||
30559e10 MS |
2739 | for (i = 0; i < count; i++) |
2740 | { | |
2741 | if (hex[0] == 0 || hex[1] == 0) | |
2742 | { | |
2743 | /* Hex string is short, or of uneven length. | |
23860348 | 2744 | Return the count that has been converted so far. */ |
30559e10 MS |
2745 | return i; |
2746 | } | |
2747 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); | |
2748 | hex += 2; | |
2749 | } | |
2750 | return i; | |
2751 | } | |
2752 | ||
c906108c SS |
2753 | /* Convert number NIB to a hex digit. */ |
2754 | ||
2755 | static int | |
fba45db2 | 2756 | tohex (int nib) |
c906108c SS |
2757 | { |
2758 | if (nib < 10) | |
c5aa993b | 2759 | return '0' + nib; |
c906108c | 2760 | else |
c5aa993b | 2761 | return 'a' + nib - 10; |
c906108c | 2762 | } |
30559e10 MS |
2763 | |
2764 | static int | |
cfd77fa1 | 2765 | bin2hex (const gdb_byte *bin, char *hex, int count) |
30559e10 MS |
2766 | { |
2767 | int i; | |
23860348 | 2768 | /* May use a length, or a nul-terminated string as input. */ |
30559e10 | 2769 | if (count == 0) |
cfd77fa1 | 2770 | count = strlen ((char *) bin); |
30559e10 MS |
2771 | |
2772 | for (i = 0; i < count; i++) | |
2773 | { | |
2774 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
2775 | *hex++ = tohex (*bin++ & 0xf); | |
2776 | } | |
2777 | *hex = 0; | |
2778 | return i; | |
2779 | } | |
c906108c | 2780 | \f |
506fb367 DJ |
2781 | /* Check for the availability of vCont. This function should also check |
2782 | the response. */ | |
c906108c SS |
2783 | |
2784 | static void | |
6d820c5c | 2785 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 2786 | { |
2e9f7625 | 2787 | char *buf; |
6d820c5c | 2788 | |
2e9f7625 DJ |
2789 | strcpy (rs->buf, "vCont?"); |
2790 | putpkt (rs->buf); | |
6d820c5c | 2791 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2792 | buf = rs->buf; |
c906108c | 2793 | |
506fb367 DJ |
2794 | /* Make sure that the features we assume are supported. */ |
2795 | if (strncmp (buf, "vCont", 5) == 0) | |
2796 | { | |
2797 | char *p = &buf[5]; | |
2798 | int support_s, support_S, support_c, support_C; | |
2799 | ||
2800 | support_s = 0; | |
2801 | support_S = 0; | |
2802 | support_c = 0; | |
2803 | support_C = 0; | |
2804 | while (p && *p == ';') | |
2805 | { | |
2806 | p++; | |
2807 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2808 | support_s = 1; | |
2809 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2810 | support_S = 1; | |
2811 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2812 | support_c = 1; | |
2813 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2814 | support_C = 1; | |
2815 | ||
2816 | p = strchr (p, ';'); | |
2817 | } | |
c906108c | 2818 | |
506fb367 DJ |
2819 | /* If s, S, c, and C are not all supported, we can't use vCont. Clearing |
2820 | BUF will make packet_ok disable the packet. */ | |
2821 | if (!support_s || !support_S || !support_c || !support_C) | |
2822 | buf[0] = 0; | |
2823 | } | |
c906108c | 2824 | |
444abaca | 2825 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 2826 | } |
c906108c | 2827 | |
506fb367 DJ |
2828 | /* Resume the remote inferior by using a "vCont" packet. The thread |
2829 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
2830 | resumed thread should be single-stepped and/or signalled. If PTID's | |
2831 | PID is -1, then all threads are resumed; the thread to be stepped and/or | |
2832 | signalled is given in the global INFERIOR_PTID. This function returns | |
2833 | non-zero iff it resumes the inferior. | |
44eaed12 | 2834 | |
506fb367 DJ |
2835 | This function issues a strict subset of all possible vCont commands at the |
2836 | moment. */ | |
44eaed12 | 2837 | |
506fb367 DJ |
2838 | static int |
2839 | remote_vcont_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
2840 | { | |
2841 | struct remote_state *rs = get_remote_state (); | |
2842 | int pid = PIDGET (ptid); | |
2963ee1d | 2843 | char *buf = NULL, *outbuf; |
506fb367 | 2844 | struct cleanup *old_cleanup; |
44eaed12 | 2845 | |
444abaca | 2846 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 2847 | remote_vcont_probe (rs); |
44eaed12 | 2848 | |
444abaca | 2849 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_DISABLE) |
6d820c5c | 2850 | return 0; |
44eaed12 | 2851 | |
506fb367 DJ |
2852 | /* If we could generate a wider range of packets, we'd have to worry |
2853 | about overflowing BUF. Should there be a generic | |
2854 | "multi-part-packet" packet? */ | |
2855 | ||
2856 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) | |
c906108c | 2857 | { |
506fb367 DJ |
2858 | /* MAGIC_NULL_PTID means that we don't have any active threads, so we |
2859 | don't have any PID numbers the inferior will understand. Make sure | |
2860 | to only send forms that do not specify a PID. */ | |
2861 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d | 2862 | outbuf = xstrprintf ("vCont;S%02x", siggnal); |
506fb367 | 2863 | else if (step) |
2963ee1d | 2864 | outbuf = xstrprintf ("vCont;s"); |
506fb367 | 2865 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d | 2866 | outbuf = xstrprintf ("vCont;C%02x", siggnal); |
506fb367 | 2867 | else |
2963ee1d | 2868 | outbuf = xstrprintf ("vCont;c"); |
506fb367 DJ |
2869 | } |
2870 | else if (pid == -1) | |
2871 | { | |
2872 | /* Resume all threads, with preference for INFERIOR_PTID. */ | |
2873 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d DJ |
2874 | outbuf = xstrprintf ("vCont;S%02x:%x;c", siggnal, |
2875 | PIDGET (inferior_ptid)); | |
506fb367 | 2876 | else if (step) |
2963ee1d | 2877 | outbuf = xstrprintf ("vCont;s:%x;c", PIDGET (inferior_ptid)); |
506fb367 | 2878 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d DJ |
2879 | outbuf = xstrprintf ("vCont;C%02x:%x;c", siggnal, |
2880 | PIDGET (inferior_ptid)); | |
506fb367 | 2881 | else |
2963ee1d | 2882 | outbuf = xstrprintf ("vCont;c"); |
c906108c SS |
2883 | } |
2884 | else | |
506fb367 DJ |
2885 | { |
2886 | /* Scheduler locking; resume only PTID. */ | |
2887 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d | 2888 | outbuf = xstrprintf ("vCont;S%02x:%x", siggnal, pid); |
506fb367 | 2889 | else if (step) |
2963ee1d | 2890 | outbuf = xstrprintf ("vCont;s:%x", pid); |
506fb367 | 2891 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d | 2892 | outbuf = xstrprintf ("vCont;C%02x:%x", siggnal, pid); |
506fb367 | 2893 | else |
2963ee1d | 2894 | outbuf = xstrprintf ("vCont;c:%x", pid); |
506fb367 | 2895 | } |
c906108c | 2896 | |
ea9c271d | 2897 | gdb_assert (outbuf && strlen (outbuf) < get_remote_packet_size ()); |
6d820c5c | 2898 | old_cleanup = make_cleanup (xfree, outbuf); |
2963ee1d DJ |
2899 | |
2900 | putpkt (outbuf); | |
506fb367 DJ |
2901 | |
2902 | do_cleanups (old_cleanup); | |
2903 | ||
2904 | return 1; | |
c906108c | 2905 | } |
43ff13b4 | 2906 | |
506fb367 DJ |
2907 | /* Tell the remote machine to resume. */ |
2908 | ||
2909 | static enum target_signal last_sent_signal = TARGET_SIGNAL_0; | |
2910 | ||
2911 | static int last_sent_step; | |
2912 | ||
43ff13b4 | 2913 | static void |
506fb367 | 2914 | remote_resume (ptid_t ptid, int step, enum target_signal siggnal) |
43ff13b4 | 2915 | { |
d01949b6 | 2916 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 2917 | char *buf; |
39f77062 | 2918 | int pid = PIDGET (ptid); |
43ff13b4 | 2919 | |
43ff13b4 JM |
2920 | last_sent_signal = siggnal; |
2921 | last_sent_step = step; | |
2922 | ||
2923 | /* A hook for when we need to do something at the last moment before | |
2924 | resumption. */ | |
9a4105ab AC |
2925 | if (deprecated_target_resume_hook) |
2926 | (*deprecated_target_resume_hook) (); | |
43ff13b4 | 2927 | |
89be2091 DJ |
2928 | /* Update the inferior on signals to silently pass, if they've changed. */ |
2929 | remote_pass_signals (); | |
2930 | ||
506fb367 DJ |
2931 | /* The vCont packet doesn't need to specify threads via Hc. */ |
2932 | if (remote_vcont_resume (ptid, step, siggnal)) | |
2933 | return; | |
2934 | ||
2935 | /* All other supported resume packets do use Hc, so call set_thread. */ | |
2936 | if (pid == -1) | |
23860348 | 2937 | set_thread (0, 0); /* Run any thread. */ |
506fb367 | 2938 | else |
23860348 | 2939 | set_thread (pid, 0); /* Run this thread. */ |
506fb367 | 2940 | |
2e9f7625 | 2941 | buf = rs->buf; |
43ff13b4 JM |
2942 | if (siggnal != TARGET_SIGNAL_0) |
2943 | { | |
2944 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 2945 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 2946 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
2947 | buf[3] = '\0'; |
2948 | } | |
2949 | else | |
c5aa993b | 2950 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 2951 | |
44eaed12 | 2952 | putpkt (buf); |
506fb367 DJ |
2953 | } |
2954 | ||
23860348 | 2955 | /* Same as remote_resume, but with async support. */ |
506fb367 DJ |
2956 | static void |
2957 | remote_async_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
2958 | { | |
2959 | remote_resume (ptid, step, siggnal); | |
43ff13b4 | 2960 | |
2acceee2 JM |
2961 | /* We are about to start executing the inferior, let's register it |
2962 | with the event loop. NOTE: this is the one place where all the | |
2963 | execution commands end up. We could alternatively do this in each | |
23860348 | 2964 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
2965 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
2966 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 2967 | NOT asynchronously. */ |
362646f5 | 2968 | if (target_can_async_p ()) |
2acceee2 | 2969 | target_async (inferior_event_handler, 0); |
23860348 | 2970 | /* Tell the world that the target is now executing. */ |
2acceee2 JM |
2971 | /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set |
2972 | this? Instead, should the client of target just assume (for | |
2973 | async targets) that the target is going to start executing? Is | |
2974 | this information already found in the continuation block? */ | |
ed9a39eb | 2975 | if (target_is_async_p ()) |
2acceee2 | 2976 | target_executing = 1; |
43ff13b4 | 2977 | } |
c906108c | 2978 | \f |
43ff13b4 JM |
2979 | |
2980 | /* Set up the signal handler for SIGINT, while the target is | |
23860348 | 2981 | executing, ovewriting the 'regular' SIGINT signal handler. */ |
43ff13b4 | 2982 | static void |
fba45db2 | 2983 | initialize_sigint_signal_handler (void) |
43ff13b4 | 2984 | { |
c5aa993b | 2985 | sigint_remote_token = |
43ff13b4 JM |
2986 | create_async_signal_handler (async_remote_interrupt, NULL); |
2987 | signal (SIGINT, handle_remote_sigint); | |
2988 | } | |
2989 | ||
23860348 | 2990 | /* Signal handler for SIGINT, while the target is executing. */ |
43ff13b4 | 2991 | static void |
fba45db2 | 2992 | handle_remote_sigint (int sig) |
43ff13b4 JM |
2993 | { |
2994 | signal (sig, handle_remote_sigint_twice); | |
c5aa993b | 2995 | sigint_remote_twice_token = |
43ff13b4 JM |
2996 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
2997 | mark_async_signal_handler_wrapper (sigint_remote_token); | |
2998 | } | |
2999 | ||
3000 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
3001 | sent once. It will take effect the second time that the user sends | |
23860348 | 3002 | a ^C. */ |
43ff13b4 | 3003 | static void |
fba45db2 | 3004 | handle_remote_sigint_twice (int sig) |
43ff13b4 JM |
3005 | { |
3006 | signal (sig, handle_sigint); | |
c5aa993b | 3007 | sigint_remote_twice_token = |
2df3850c | 3008 | create_async_signal_handler (inferior_event_handler_wrapper, NULL); |
43ff13b4 JM |
3009 | mark_async_signal_handler_wrapper (sigint_remote_twice_token); |
3010 | } | |
3011 | ||
6426a772 | 3012 | /* Perform the real interruption of the target execution, in response |
23860348 | 3013 | to a ^C. */ |
c5aa993b | 3014 | static void |
fba45db2 | 3015 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
3016 | { |
3017 | if (remote_debug) | |
3018 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
3019 | ||
3020 | target_stop (); | |
3021 | } | |
3022 | ||
3023 | /* Perform interrupt, if the first attempt did not succeed. Just give | |
23860348 | 3024 | up on the target alltogether. */ |
2df3850c | 3025 | void |
fba45db2 | 3026 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 3027 | { |
2df3850c JM |
3028 | if (remote_debug) |
3029 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt_twice called\n"); | |
6426a772 | 3030 | /* Do something only if the target was not killed by the previous |
23860348 | 3031 | cntl-C. */ |
6426a772 JM |
3032 | if (target_executing) |
3033 | { | |
3034 | interrupt_query (); | |
3035 | signal (SIGINT, handle_remote_sigint); | |
3036 | } | |
43ff13b4 JM |
3037 | } |
3038 | ||
3039 | /* Reinstall the usual SIGINT handlers, after the target has | |
23860348 | 3040 | stopped. */ |
6426a772 JM |
3041 | static void |
3042 | cleanup_sigint_signal_handler (void *dummy) | |
43ff13b4 JM |
3043 | { |
3044 | signal (SIGINT, handle_sigint); | |
3045 | if (sigint_remote_twice_token) | |
d5d6fca5 | 3046 | delete_async_signal_handler (&sigint_remote_twice_token); |
43ff13b4 | 3047 | if (sigint_remote_token) |
d5d6fca5 | 3048 | delete_async_signal_handler (&sigint_remote_token); |
43ff13b4 JM |
3049 | } |
3050 | ||
c906108c SS |
3051 | /* Send ^C to target to halt it. Target will respond, and send us a |
3052 | packet. */ | |
507f3c78 | 3053 | static void (*ofunc) (int); |
c906108c | 3054 | |
7a292a7a SS |
3055 | /* The command line interface's stop routine. This function is installed |
3056 | as a signal handler for SIGINT. The first time a user requests a | |
3057 | stop, we call remote_stop to send a break or ^C. If there is no | |
3058 | response from the target (it didn't stop when the user requested it), | |
23860348 | 3059 | we ask the user if he'd like to detach from the target. */ |
c906108c | 3060 | static void |
fba45db2 | 3061 | remote_interrupt (int signo) |
c906108c | 3062 | { |
23860348 | 3063 | /* If this doesn't work, try more severe steps. */ |
7a292a7a SS |
3064 | signal (signo, remote_interrupt_twice); |
3065 | ||
3066 | if (remote_debug) | |
0f71a2f6 | 3067 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); |
7a292a7a SS |
3068 | |
3069 | target_stop (); | |
3070 | } | |
3071 | ||
3072 | /* The user typed ^C twice. */ | |
3073 | ||
3074 | static void | |
fba45db2 | 3075 | remote_interrupt_twice (int signo) |
7a292a7a SS |
3076 | { |
3077 | signal (signo, ofunc); | |
3078 | interrupt_query (); | |
c906108c SS |
3079 | signal (signo, remote_interrupt); |
3080 | } | |
7a292a7a SS |
3081 | |
3082 | /* This is the generic stop called via the target vector. When a target | |
3083 | interrupt is requested, either by the command line or the GUI, we | |
23860348 | 3084 | will eventually end up here. */ |
c906108c | 3085 | static void |
fba45db2 | 3086 | remote_stop (void) |
c906108c | 3087 | { |
7a292a7a SS |
3088 | /* Send a break or a ^C, depending on user preference. */ |
3089 | if (remote_debug) | |
0f71a2f6 | 3090 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 3091 | |
7a292a7a | 3092 | if (remote_break) |
2cd58942 | 3093 | serial_send_break (remote_desc); |
c906108c | 3094 | else |
2cd58942 | 3095 | serial_write (remote_desc, "\003", 1); |
c906108c SS |
3096 | } |
3097 | ||
3098 | /* Ask the user what to do when an interrupt is received. */ | |
3099 | ||
3100 | static void | |
fba45db2 | 3101 | interrupt_query (void) |
c906108c SS |
3102 | { |
3103 | target_terminal_ours (); | |
3104 | ||
3105 | if (query ("Interrupted while waiting for the program.\n\ | |
3106 | Give up (and stop debugging it)? ")) | |
3107 | { | |
3108 | target_mourn_inferior (); | |
315a522e | 3109 | deprecated_throw_reason (RETURN_QUIT); |
c906108c SS |
3110 | } |
3111 | ||
3112 | target_terminal_inferior (); | |
3113 | } | |
3114 | ||
6426a772 JM |
3115 | /* Enable/disable target terminal ownership. Most targets can use |
3116 | terminal groups to control terminal ownership. Remote targets are | |
3117 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 3118 | is required. */ |
6426a772 JM |
3119 | |
3120 | static void | |
3121 | remote_async_terminal_inferior (void) | |
3122 | { | |
3123 | /* FIXME: cagney/1999-09-27: Shouldn't need to test for | |
3124 | sync_execution here. This function should only be called when | |
3125 | GDB is resuming the inferior in the forground. A background | |
3126 | resume (``run&'') should leave GDB in control of the terminal and | |
23860348 | 3127 | consequently should not call this code. */ |
6426a772 JM |
3128 | if (!sync_execution) |
3129 | return; | |
3130 | /* FIXME: cagney/1999-09-27: Closely related to the above. Make | |
3131 | calls target_terminal_*() idenpotent. The event-loop GDB talking | |
3132 | to an asynchronous target with a synchronous command calls this | |
3133 | function from both event-top.c and infrun.c/infcmd.c. Once GDB | |
3134 | stops trying to transfer the terminal to the target when it | |
3135 | shouldn't this guard can go away. */ | |
3136 | if (!remote_async_terminal_ours_p) | |
3137 | return; | |
3138 | delete_file_handler (input_fd); | |
3139 | remote_async_terminal_ours_p = 0; | |
3140 | initialize_sigint_signal_handler (); | |
3141 | /* NOTE: At this point we could also register our selves as the | |
3142 | recipient of all input. Any characters typed could then be | |
23860348 | 3143 | passed on down to the target. */ |
6426a772 JM |
3144 | } |
3145 | ||
3146 | static void | |
3147 | remote_async_terminal_ours (void) | |
3148 | { | |
23860348 | 3149 | /* See FIXME in remote_async_terminal_inferior. */ |
6426a772 JM |
3150 | if (!sync_execution) |
3151 | return; | |
23860348 | 3152 | /* See FIXME in remote_async_terminal_inferior. */ |
6426a772 JM |
3153 | if (remote_async_terminal_ours_p) |
3154 | return; | |
3155 | cleanup_sigint_signal_handler (NULL); | |
3156 | add_file_handler (input_fd, stdin_event_handler, 0); | |
3157 | remote_async_terminal_ours_p = 1; | |
3158 | } | |
3159 | ||
c906108c SS |
3160 | /* If nonzero, ignore the next kill. */ |
3161 | ||
3162 | int kill_kludge; | |
3163 | ||
3164 | void | |
917317f4 | 3165 | remote_console_output (char *msg) |
c906108c SS |
3166 | { |
3167 | char *p; | |
3168 | ||
c5aa993b | 3169 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
3170 | { |
3171 | char tb[2]; | |
3172 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3173 | tb[0] = c; | |
3174 | tb[1] = 0; | |
43ff13b4 | 3175 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 3176 | } |
917317f4 | 3177 | gdb_flush (gdb_stdtarg); |
c906108c SS |
3178 | } |
3179 | ||
0f71a2f6 JM |
3180 | /* Wait until the remote machine stops, then return, |
3181 | storing status in STATUS just as `wait' would. | |
802188a7 | 3182 | Returns "pid", which in the case of a multi-threaded |
0f71a2f6 | 3183 | remote OS, is the thread-id. */ |
c906108c | 3184 | |
39f77062 KB |
3185 | static ptid_t |
3186 | remote_wait (ptid_t ptid, struct target_waitstatus *status) | |
c906108c | 3187 | { |
d01949b6 | 3188 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 3189 | struct remote_arch_state *rsa = get_remote_arch_state (); |
b2dd6311 | 3190 | ULONGEST thread_num = -1; |
3c3bea1c | 3191 | ULONGEST addr; |
cfa9d6d9 | 3192 | int solibs_changed = 0; |
c906108c SS |
3193 | |
3194 | status->kind = TARGET_WAITKIND_EXITED; | |
3195 | status->value.integer = 0; | |
3196 | ||
3197 | while (1) | |
3198 | { | |
2e9f7625 | 3199 | char *buf, *p; |
c906108c | 3200 | |
c906108c | 3201 | ofunc = signal (SIGINT, remote_interrupt); |
6d820c5c | 3202 | getpkt (&rs->buf, &rs->buf_size, 1); |
c906108c SS |
3203 | signal (SIGINT, ofunc); |
3204 | ||
2e9f7625 DJ |
3205 | buf = rs->buf; |
3206 | ||
c906108c | 3207 | /* This is a hook for when we need to do something (perhaps the |
c5aa993b | 3208 | collection of trace data) every time the target stops. */ |
9a4105ab AC |
3209 | if (deprecated_target_wait_loop_hook) |
3210 | (*deprecated_target_wait_loop_hook) (); | |
c906108c | 3211 | |
3c3bea1c GS |
3212 | remote_stopped_by_watchpoint_p = 0; |
3213 | ||
c906108c SS |
3214 | switch (buf[0]) |
3215 | { | |
23860348 | 3216 | case 'E': /* Error of some sort. */ |
8a3fe4f8 | 3217 | warning (_("Remote failure reply: %s"), buf); |
c906108c | 3218 | continue; |
23860348 | 3219 | case 'F': /* File-I/O request. */ |
449092f6 CV |
3220 | remote_fileio_request (buf); |
3221 | continue; | |
23860348 | 3222 | case 'T': /* Status with PC, SP, FP, ... */ |
c906108c | 3223 | { |
cfd77fa1 | 3224 | gdb_byte regs[MAX_REGISTER_SIZE]; |
c906108c | 3225 | |
23860348 | 3226 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
c906108c | 3227 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where |
c5aa993b JM |
3228 | ss = signal number |
3229 | n... = register number | |
3230 | r... = register contents | |
3231 | */ | |
c906108c SS |
3232 | p = &buf[3]; /* after Txx */ |
3233 | ||
3234 | while (*p) | |
3235 | { | |
cfd77fa1 | 3236 | char *p1; |
c906108c | 3237 | char *p_temp; |
97345198 | 3238 | int fieldsize; |
3c3bea1c GS |
3239 | LONGEST pnum = 0; |
3240 | ||
23860348 MS |
3241 | /* If the packet contains a register number save it in |
3242 | pnum and set p1 to point to the character following | |
3243 | it. Otherwise p1 points to p. */ | |
c906108c | 3244 | |
23860348 MS |
3245 | /* If this packet is an awatch packet, don't parse the |
3246 | 'a' as a register number. */ | |
3c3bea1c GS |
3247 | |
3248 | if (strncmp (p, "awatch", strlen("awatch")) != 0) | |
3249 | { | |
3250 | /* Read the ``P'' register number. */ | |
3251 | pnum = strtol (p, &p_temp, 16); | |
cfd77fa1 | 3252 | p1 = p_temp; |
3c3bea1c | 3253 | } |
802188a7 | 3254 | else |
3c3bea1c | 3255 | p1 = p; |
c906108c | 3256 | |
23860348 | 3257 | if (p1 == p) /* No register number present here. */ |
c906108c | 3258 | { |
cfd77fa1 | 3259 | p1 = strchr (p, ':'); |
c906108c | 3260 | if (p1 == NULL) |
670aa98f | 3261 | error (_("Malformed packet(a) (missing colon): %s\n\ |
8a3fe4f8 | 3262 | Packet: '%s'\n"), |
670aa98f | 3263 | p, buf); |
3c3bea1c | 3264 | if (strncmp (p, "thread", p1 - p) == 0) |
c906108c SS |
3265 | { |
3266 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
3267 | record_currthread (thread_num); | |
cfd77fa1 | 3268 | p = p_temp; |
c906108c | 3269 | } |
3c3bea1c GS |
3270 | else if ((strncmp (p, "watch", p1 - p) == 0) |
3271 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
3272 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
3273 | { | |
3274 | remote_stopped_by_watchpoint_p = 1; | |
3275 | p = unpack_varlen_hex (++p1, &addr); | |
3276 | remote_watch_data_address = (CORE_ADDR)addr; | |
3277 | } | |
cfa9d6d9 DJ |
3278 | else if (strncmp (p, "library", p1 - p) == 0) |
3279 | { | |
3280 | p1++; | |
3281 | p_temp = p1; | |
3282 | while (*p_temp && *p_temp != ';') | |
3283 | p_temp++; | |
3284 | ||
3285 | solibs_changed = 1; | |
3286 | p = p_temp; | |
3287 | } | |
3c3bea1c GS |
3288 | else |
3289 | { | |
3290 | /* Silently skip unknown optional info. */ | |
3291 | p_temp = strchr (p1 + 1, ';'); | |
3292 | if (p_temp) | |
cfd77fa1 | 3293 | p = p_temp; |
3c3bea1c | 3294 | } |
c906108c SS |
3295 | } |
3296 | else | |
3297 | { | |
ea9c271d | 3298 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); |
c906108c SS |
3299 | p = p1; |
3300 | ||
3301 | if (*p++ != ':') | |
8a3fe4f8 AC |
3302 | error (_("Malformed packet(b) (missing colon): %s\n\ |
3303 | Packet: '%s'\n"), | |
3fcb8548 | 3304 | p, buf); |
c906108c | 3305 | |
ad10f812 | 3306 | if (reg == NULL) |
8a3fe4f8 AC |
3307 | error (_("Remote sent bad register number %s: %s\n\ |
3308 | Packet: '%s'\n"), | |
3fcb8548 | 3309 | phex_nz (pnum, 0), p, buf); |
c906108c | 3310 | |
cfd77fa1 | 3311 | fieldsize = hex2bin (p, regs, |
2bc416ba | 3312 | register_size (current_gdbarch, |
23860348 | 3313 | reg->regnum)); |
97345198 | 3314 | p += 2 * fieldsize; |
2bc416ba | 3315 | if (fieldsize < register_size (current_gdbarch, |
23860348 | 3316 | reg->regnum)) |
8a3fe4f8 | 3317 | warning (_("Remote reply is too short: %s"), buf); |
594f7785 | 3318 | regcache_raw_supply (get_current_regcache (), |
23860348 | 3319 | reg->regnum, regs); |
c906108c SS |
3320 | } |
3321 | ||
3322 | if (*p++ != ';') | |
2bc416ba | 3323 | error (_("Remote register badly formatted: %s\nhere: %s"), |
23860348 | 3324 | buf, p); |
c906108c SS |
3325 | } |
3326 | } | |
3327 | /* fall through */ | |
23860348 | 3328 | case 'S': /* Old style status, just signal only. */ |
cfa9d6d9 DJ |
3329 | if (solibs_changed) |
3330 | status->kind = TARGET_WAITKIND_LOADED; | |
3331 | else | |
3332 | { | |
3333 | status->kind = TARGET_WAITKIND_STOPPED; | |
3334 | status->value.sig = (enum target_signal) | |
3335 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3336 | } | |
c906108c | 3337 | |
0f71a2f6 JM |
3338 | if (buf[3] == 'p') |
3339 | { | |
0f71a2f6 JM |
3340 | thread_num = strtol ((const char *) &buf[4], NULL, 16); |
3341 | record_currthread (thread_num); | |
3342 | } | |
c906108c | 3343 | goto got_status; |
23860348 | 3344 | case 'W': /* Target exited. */ |
c906108c SS |
3345 | { |
3346 | /* The remote process exited. */ | |
3347 | status->kind = TARGET_WAITKIND_EXITED; | |
3348 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
3349 | goto got_status; | |
3350 | } | |
3351 | case 'X': | |
3352 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
3353 | status->value.sig = (enum target_signal) | |
3354 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3355 | kill_kludge = 1; | |
3356 | ||
3357 | goto got_status; | |
23860348 | 3358 | case 'O': /* Console output. */ |
c906108c SS |
3359 | remote_console_output (buf + 1); |
3360 | continue; | |
3361 | case '\0': | |
3362 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3363 | { | |
3364 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3365 | the remote system doesn't support it. */ |
c906108c SS |
3366 | target_terminal_ours_for_output (); |
3367 | printf_filtered | |
3368 | ("Can't send signals to this remote system. %s not sent.\n", | |
3369 | target_signal_to_name (last_sent_signal)); | |
3370 | last_sent_signal = TARGET_SIGNAL_0; | |
3371 | target_terminal_inferior (); | |
3372 | ||
3373 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3374 | putpkt ((char *) buf); | |
3375 | continue; | |
3376 | } | |
3377 | /* else fallthrough */ | |
3378 | default: | |
8a3fe4f8 | 3379 | warning (_("Invalid remote reply: %s"), buf); |
c906108c SS |
3380 | continue; |
3381 | } | |
3382 | } | |
c5aa993b | 3383 | got_status: |
c906108c SS |
3384 | if (thread_num != -1) |
3385 | { | |
39f77062 | 3386 | return pid_to_ptid (thread_num); |
c906108c | 3387 | } |
39f77062 | 3388 | return inferior_ptid; |
c906108c SS |
3389 | } |
3390 | ||
23860348 | 3391 | /* Async version of remote_wait. */ |
39f77062 KB |
3392 | static ptid_t |
3393 | remote_async_wait (ptid_t ptid, struct target_waitstatus *status) | |
43ff13b4 | 3394 | { |
d01949b6 | 3395 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 3396 | struct remote_arch_state *rsa = get_remote_arch_state (); |
b2dd6311 | 3397 | ULONGEST thread_num = -1; |
3c3bea1c | 3398 | ULONGEST addr; |
cfa9d6d9 | 3399 | int solibs_changed = 0; |
43ff13b4 JM |
3400 | |
3401 | status->kind = TARGET_WAITKIND_EXITED; | |
3402 | status->value.integer = 0; | |
3403 | ||
3c3bea1c GS |
3404 | remote_stopped_by_watchpoint_p = 0; |
3405 | ||
43ff13b4 JM |
3406 | while (1) |
3407 | { | |
2e9f7625 | 3408 | char *buf, *p; |
c5aa993b | 3409 | |
ed9a39eb | 3410 | if (!target_is_async_p ()) |
43ff13b4 | 3411 | ofunc = signal (SIGINT, remote_interrupt); |
6426a772 JM |
3412 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
3413 | _never_ wait for ever -> test on target_is_async_p(). | |
3414 | However, before we do that we need to ensure that the caller | |
23860348 | 3415 | knows how to take the target into/out of async mode. */ |
6d820c5c | 3416 | getpkt (&rs->buf, &rs->buf_size, wait_forever_enabled_p); |
ed9a39eb | 3417 | if (!target_is_async_p ()) |
43ff13b4 JM |
3418 | signal (SIGINT, ofunc); |
3419 | ||
2e9f7625 DJ |
3420 | buf = rs->buf; |
3421 | ||
43ff13b4 | 3422 | /* This is a hook for when we need to do something (perhaps the |
c5aa993b | 3423 | collection of trace data) every time the target stops. */ |
9a4105ab AC |
3424 | if (deprecated_target_wait_loop_hook) |
3425 | (*deprecated_target_wait_loop_hook) (); | |
43ff13b4 JM |
3426 | |
3427 | switch (buf[0]) | |
3428 | { | |
23860348 | 3429 | case 'E': /* Error of some sort. */ |
8a3fe4f8 | 3430 | warning (_("Remote failure reply: %s"), buf); |
43ff13b4 | 3431 | continue; |
23860348 | 3432 | case 'F': /* File-I/O request. */ |
449092f6 CV |
3433 | remote_fileio_request (buf); |
3434 | continue; | |
23860348 | 3435 | case 'T': /* Status with PC, SP, FP, ... */ |
43ff13b4 | 3436 | { |
cfd77fa1 | 3437 | gdb_byte regs[MAX_REGISTER_SIZE]; |
43ff13b4 | 3438 | |
23860348 | 3439 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
43ff13b4 | 3440 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where |
c5aa993b JM |
3441 | ss = signal number |
3442 | n... = register number | |
3443 | r... = register contents | |
3444 | */ | |
43ff13b4 JM |
3445 | p = &buf[3]; /* after Txx */ |
3446 | ||
3447 | while (*p) | |
3448 | { | |
cfd77fa1 | 3449 | char *p1; |
43ff13b4 | 3450 | char *p_temp; |
6c3f2dbf | 3451 | int fieldsize; |
3c3bea1c | 3452 | long pnum = 0; |
43ff13b4 | 3453 | |
23860348 MS |
3454 | /* If the packet contains a register number, save it |
3455 | in pnum and set p1 to point to the character | |
3456 | following it. Otherwise p1 points to p. */ | |
3c3bea1c GS |
3457 | |
3458 | /* If this packet is an awatch packet, don't parse the 'a' | |
3459 | as a register number. */ | |
802188a7 | 3460 | |
cfa9d6d9 | 3461 | if (strncmp (p, "awatch", strlen("awatch")) != 0) |
3c3bea1c GS |
3462 | { |
3463 | /* Read the register number. */ | |
3464 | pnum = strtol (p, &p_temp, 16); | |
cfd77fa1 | 3465 | p1 = p_temp; |
3c3bea1c | 3466 | } |
802188a7 | 3467 | else |
3c3bea1c | 3468 | p1 = p; |
43ff13b4 | 3469 | |
23860348 | 3470 | if (p1 == p) /* No register number present here. */ |
43ff13b4 | 3471 | { |
cfd77fa1 | 3472 | p1 = strchr (p, ':'); |
43ff13b4 | 3473 | if (p1 == NULL) |
8a3fe4f8 AC |
3474 | error (_("Malformed packet(a) (missing colon): %s\n\ |
3475 | Packet: '%s'\n"), | |
3fcb8548 | 3476 | p, buf); |
3c3bea1c | 3477 | if (strncmp (p, "thread", p1 - p) == 0) |
43ff13b4 JM |
3478 | { |
3479 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
3480 | record_currthread (thread_num); | |
cfd77fa1 | 3481 | p = p_temp; |
43ff13b4 | 3482 | } |
3c3bea1c GS |
3483 | else if ((strncmp (p, "watch", p1 - p) == 0) |
3484 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
3485 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
3486 | { | |
3487 | remote_stopped_by_watchpoint_p = 1; | |
3488 | p = unpack_varlen_hex (++p1, &addr); | |
3489 | remote_watch_data_address = (CORE_ADDR)addr; | |
3490 | } | |
cfa9d6d9 DJ |
3491 | else if (strncmp (p, "library", p1 - p) == 0) |
3492 | { | |
3493 | p1++; | |
3494 | p_temp = p1; | |
3495 | while (*p_temp && *p_temp != ';') | |
3496 | p_temp++; | |
3497 | ||
3498 | solibs_changed = 1; | |
3499 | p = p_temp; | |
3500 | } | |
3c3bea1c GS |
3501 | else |
3502 | { | |
3503 | /* Silently skip unknown optional info. */ | |
cfd77fa1 | 3504 | p_temp = strchr (p1 + 1, ';'); |
3c3bea1c GS |
3505 | if (p_temp) |
3506 | p = p_temp; | |
3507 | } | |
43ff13b4 | 3508 | } |
802188a7 | 3509 | |
43ff13b4 JM |
3510 | else |
3511 | { | |
ea9c271d | 3512 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); |
43ff13b4 | 3513 | p = p1; |
43ff13b4 | 3514 | if (*p++ != ':') |
8a3fe4f8 AC |
3515 | error (_("Malformed packet(b) (missing colon): %s\n\ |
3516 | Packet: '%s'\n"), | |
3fcb8548 | 3517 | p, buf); |
43ff13b4 | 3518 | |
ad10f812 | 3519 | if (reg == NULL) |
8a3fe4f8 AC |
3520 | error (_("Remote sent bad register number %ld: %s\n\ |
3521 | Packet: '%s'\n"), | |
3fcb8548 | 3522 | pnum, p, buf); |
43ff13b4 | 3523 | |
cfd77fa1 | 3524 | fieldsize = hex2bin (p, regs, |
2bc416ba | 3525 | register_size (current_gdbarch, |
23860348 | 3526 | reg->regnum)); |
6c3f2dbf | 3527 | p += 2 * fieldsize; |
2bc416ba | 3528 | if (fieldsize < register_size (current_gdbarch, |
23860348 | 3529 | reg->regnum)) |
8a3fe4f8 | 3530 | warning (_("Remote reply is too short: %s"), buf); |
594f7785 UW |
3531 | regcache_raw_supply (get_current_regcache (), |
3532 | reg->regnum, regs); | |
43ff13b4 JM |
3533 | } |
3534 | ||
3535 | if (*p++ != ';') | |
8a3fe4f8 | 3536 | error (_("Remote register badly formatted: %s\nhere: %s"), |
0a2cfde4 | 3537 | buf, p); |
43ff13b4 JM |
3538 | } |
3539 | } | |
3540 | /* fall through */ | |
23860348 | 3541 | case 'S': /* Old style status, just signal only. */ |
cfa9d6d9 DJ |
3542 | if (solibs_changed) |
3543 | status->kind = TARGET_WAITKIND_LOADED; | |
3544 | else | |
3545 | { | |
3546 | status->kind = TARGET_WAITKIND_STOPPED; | |
3547 | status->value.sig = (enum target_signal) | |
3548 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3549 | } | |
43ff13b4 JM |
3550 | |
3551 | if (buf[3] == 'p') | |
3552 | { | |
43ff13b4 JM |
3553 | thread_num = strtol ((const char *) &buf[4], NULL, 16); |
3554 | record_currthread (thread_num); | |
3555 | } | |
43ff13b4 | 3556 | goto got_status; |
23860348 | 3557 | case 'W': /* Target exited. */ |
43ff13b4 JM |
3558 | { |
3559 | /* The remote process exited. */ | |
3560 | status->kind = TARGET_WAITKIND_EXITED; | |
3561 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
3562 | goto got_status; | |
3563 | } | |
3564 | case 'X': | |
3565 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
3566 | status->value.sig = (enum target_signal) | |
3567 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3568 | kill_kludge = 1; | |
3569 | ||
3570 | goto got_status; | |
23860348 | 3571 | case 'O': /* Console output. */ |
43ff13b4 | 3572 | remote_console_output (buf + 1); |
c4093a6a | 3573 | /* Return immediately to the event loop. The event loop will |
23860348 | 3574 | still be waiting on the inferior afterwards. */ |
c4093a6a JM |
3575 | status->kind = TARGET_WAITKIND_IGNORE; |
3576 | goto got_status; | |
43ff13b4 JM |
3577 | case '\0': |
3578 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3579 | { | |
3580 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3581 | the remote system doesn't support it. */ |
43ff13b4 JM |
3582 | target_terminal_ours_for_output (); |
3583 | printf_filtered | |
3584 | ("Can't send signals to this remote system. %s not sent.\n", | |
3585 | target_signal_to_name (last_sent_signal)); | |
3586 | last_sent_signal = TARGET_SIGNAL_0; | |
3587 | target_terminal_inferior (); | |
3588 | ||
3589 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3590 | putpkt ((char *) buf); | |
3591 | continue; | |
3592 | } | |
3593 | /* else fallthrough */ | |
3594 | default: | |
8a3fe4f8 | 3595 | warning (_("Invalid remote reply: %s"), buf); |
43ff13b4 JM |
3596 | continue; |
3597 | } | |
3598 | } | |
c5aa993b | 3599 | got_status: |
43ff13b4 JM |
3600 | if (thread_num != -1) |
3601 | { | |
39f77062 | 3602 | return pid_to_ptid (thread_num); |
43ff13b4 | 3603 | } |
39f77062 | 3604 | return inferior_ptid; |
43ff13b4 JM |
3605 | } |
3606 | ||
74ca34ce | 3607 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 3608 | |
b96ec7ac | 3609 | static int |
56be3814 | 3610 | fetch_register_using_p (struct regcache *regcache, struct packet_reg *reg) |
b96ec7ac AC |
3611 | { |
3612 | struct remote_state *rs = get_remote_state (); | |
2e9f7625 | 3613 | char *buf, *p; |
b96ec7ac AC |
3614 | char regp[MAX_REGISTER_SIZE]; |
3615 | int i; | |
3616 | ||
74ca34ce DJ |
3617 | if (remote_protocol_packets[PACKET_p].support == PACKET_DISABLE) |
3618 | return 0; | |
3619 | ||
3620 | if (reg->pnum == -1) | |
3621 | return 0; | |
3622 | ||
2e9f7625 | 3623 | p = rs->buf; |
fcad0fa4 | 3624 | *p++ = 'p'; |
74ca34ce | 3625 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 3626 | *p++ = '\0'; |
6d820c5c | 3627 | remote_send (&rs->buf, &rs->buf_size); |
3f9a994c | 3628 | |
2e9f7625 DJ |
3629 | buf = rs->buf; |
3630 | ||
74ca34ce DJ |
3631 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_p])) |
3632 | { | |
3633 | case PACKET_OK: | |
3634 | break; | |
3635 | case PACKET_UNKNOWN: | |
3636 | return 0; | |
3637 | case PACKET_ERROR: | |
3638 | error (_("Could not fetch register \"%s\""), | |
3639 | gdbarch_register_name (current_gdbarch, reg->regnum)); | |
3640 | } | |
3f9a994c JB |
3641 | |
3642 | /* If this register is unfetchable, tell the regcache. */ | |
3643 | if (buf[0] == 'x') | |
8480adf2 | 3644 | { |
56be3814 | 3645 | regcache_raw_supply (regcache, reg->regnum, NULL); |
8480adf2 | 3646 | return 1; |
b96ec7ac | 3647 | } |
b96ec7ac | 3648 | |
3f9a994c JB |
3649 | /* Otherwise, parse and supply the value. */ |
3650 | p = buf; | |
3651 | i = 0; | |
3652 | while (p[0] != 0) | |
3653 | { | |
3654 | if (p[1] == 0) | |
74ca34ce | 3655 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
3656 | |
3657 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3658 | p += 2; | |
3659 | } | |
56be3814 | 3660 | regcache_raw_supply (regcache, reg->regnum, regp); |
3f9a994c | 3661 | return 1; |
b96ec7ac AC |
3662 | } |
3663 | ||
74ca34ce DJ |
3664 | /* Fetch the registers included in the target's 'g' packet. */ |
3665 | ||
29709017 DJ |
3666 | static int |
3667 | send_g_packet (void) | |
c906108c | 3668 | { |
d01949b6 | 3669 | struct remote_state *rs = get_remote_state (); |
74ca34ce | 3670 | int i, buf_len; |
c906108c | 3671 | char *p; |
74ca34ce | 3672 | char *regs; |
c906108c | 3673 | |
74ca34ce DJ |
3674 | sprintf (rs->buf, "g"); |
3675 | remote_send (&rs->buf, &rs->buf_size); | |
c906108c | 3676 | |
29709017 DJ |
3677 | /* We can get out of synch in various cases. If the first character |
3678 | in the buffer is not a hex character, assume that has happened | |
3679 | and try to fetch another packet to read. */ | |
3680 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
3681 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
3682 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
3683 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
3684 | { | |
3685 | if (remote_debug) | |
3686 | fprintf_unfiltered (gdb_stdlog, | |
3687 | "Bad register packet; fetching a new packet\n"); | |
3688 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3689 | } | |
3690 | ||
74ca34ce DJ |
3691 | buf_len = strlen (rs->buf); |
3692 | ||
3693 | /* Sanity check the received packet. */ | |
3694 | if (buf_len % 2 != 0) | |
3695 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf); | |
29709017 DJ |
3696 | |
3697 | return buf_len / 2; | |
3698 | } | |
3699 | ||
3700 | static void | |
56be3814 | 3701 | process_g_packet (struct regcache *regcache) |
29709017 DJ |
3702 | { |
3703 | struct remote_state *rs = get_remote_state (); | |
3704 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
3705 | int i, buf_len; | |
3706 | char *p; | |
3707 | char *regs; | |
3708 | ||
3709 | buf_len = strlen (rs->buf); | |
3710 | ||
3711 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce DJ |
3712 | if (buf_len > 2 * rsa->sizeof_g_packet) |
3713 | error (_("Remote 'g' packet reply is too long: %s"), rs->buf); | |
3714 | ||
3715 | /* Save the size of the packet sent to us by the target. It is used | |
3716 | as a heuristic when determining the max size of packets that the | |
3717 | target can safely receive. */ | |
3718 | if (rsa->actual_register_packet_size == 0) | |
3719 | rsa->actual_register_packet_size = buf_len; | |
3720 | ||
3721 | /* If this is smaller than we guessed the 'g' packet would be, | |
3722 | update our records. A 'g' reply that doesn't include a register's | |
3723 | value implies either that the register is not available, or that | |
3724 | the 'p' packet must be used. */ | |
3725 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 3726 | { |
74ca34ce DJ |
3727 | rsa->sizeof_g_packet = buf_len / 2; |
3728 | ||
f57d151a | 3729 | for (i = 0; i < gdbarch_num_regs (current_gdbarch); i++) |
b96ec7ac | 3730 | { |
74ca34ce DJ |
3731 | if (rsa->regs[i].pnum == -1) |
3732 | continue; | |
3733 | ||
3734 | if (rsa->regs[i].offset >= rsa->sizeof_g_packet) | |
3735 | rsa->regs[i].in_g_packet = 0; | |
b96ec7ac | 3736 | else |
74ca34ce | 3737 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 3738 | } |
74ca34ce | 3739 | } |
b323314b | 3740 | |
74ca34ce | 3741 | regs = alloca (rsa->sizeof_g_packet); |
c906108c SS |
3742 | |
3743 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 3744 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 3745 | |
c906108c SS |
3746 | /* Reply describes registers byte by byte, each byte encoded as two |
3747 | hex characters. Suck them all up, then supply them to the | |
3748 | register cacheing/storage mechanism. */ | |
3749 | ||
74ca34ce | 3750 | p = rs->buf; |
ea9c271d | 3751 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 3752 | { |
74ca34ce DJ |
3753 | if (p[0] == 0 || p[1] == 0) |
3754 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
3755 | internal_error (__FILE__, __LINE__, | |
3756 | "unexpected end of 'g' packet reply"); | |
3757 | ||
c906108c | 3758 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 3759 | regs[i] = 0; /* 'x' */ |
c906108c SS |
3760 | else |
3761 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3762 | p += 2; | |
3763 | } | |
3764 | ||
ad10f812 | 3765 | { |
b323314b | 3766 | int i; |
f57d151a | 3767 | for (i = 0; i < gdbarch_num_regs (current_gdbarch); i++) |
ad10f812 | 3768 | { |
ea9c271d | 3769 | struct packet_reg *r = &rsa->regs[i]; |
b323314b AC |
3770 | if (r->in_g_packet) |
3771 | { | |
74ca34ce DJ |
3772 | if (r->offset * 2 >= strlen (rs->buf)) |
3773 | /* This shouldn't happen - we adjusted in_g_packet above. */ | |
3774 | internal_error (__FILE__, __LINE__, | |
3775 | "unexpected end of 'g' packet reply"); | |
3776 | else if (rs->buf[r->offset * 2] == 'x') | |
8ccc1287 | 3777 | { |
74ca34ce | 3778 | gdb_assert (r->offset * 2 < strlen (rs->buf)); |
8ccc1287 AC |
3779 | /* The register isn't available, mark it as such (at |
3780 | the same time setting the value to zero). */ | |
56be3814 | 3781 | regcache_raw_supply (regcache, r->regnum, NULL); |
8ccc1287 AC |
3782 | } |
3783 | else | |
56be3814 | 3784 | regcache_raw_supply (regcache, r->regnum, |
8ccc1287 | 3785 | regs + r->offset); |
b323314b | 3786 | } |
ad10f812 AC |
3787 | } |
3788 | } | |
c906108c SS |
3789 | } |
3790 | ||
29709017 | 3791 | static void |
56be3814 | 3792 | fetch_registers_using_g (struct regcache *regcache) |
29709017 DJ |
3793 | { |
3794 | send_g_packet (); | |
56be3814 | 3795 | process_g_packet (regcache); |
29709017 DJ |
3796 | } |
3797 | ||
74ca34ce | 3798 | static void |
56be3814 | 3799 | remote_fetch_registers (struct regcache *regcache, int regnum) |
74ca34ce DJ |
3800 | { |
3801 | struct remote_state *rs = get_remote_state (); | |
3802 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
3803 | int i; | |
3804 | ||
3805 | set_thread (PIDGET (inferior_ptid), 1); | |
3806 | ||
3807 | if (regnum >= 0) | |
3808 | { | |
3809 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
3810 | gdb_assert (reg != NULL); | |
3811 | ||
3812 | /* If this register might be in the 'g' packet, try that first - | |
3813 | we are likely to read more than one register. If this is the | |
3814 | first 'g' packet, we might be overly optimistic about its | |
3815 | contents, so fall back to 'p'. */ | |
3816 | if (reg->in_g_packet) | |
3817 | { | |
56be3814 | 3818 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
3819 | if (reg->in_g_packet) |
3820 | return; | |
3821 | } | |
3822 | ||
56be3814 | 3823 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
3824 | return; |
3825 | ||
3826 | /* This register is not available. */ | |
56be3814 | 3827 | regcache_raw_supply (regcache, reg->regnum, NULL); |
74ca34ce DJ |
3828 | |
3829 | return; | |
3830 | } | |
3831 | ||
56be3814 | 3832 | fetch_registers_using_g (regcache); |
74ca34ce | 3833 | |
f57d151a | 3834 | for (i = 0; i < gdbarch_num_regs (current_gdbarch); i++) |
74ca34ce | 3835 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 3836 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
3837 | { |
3838 | /* This register is not available. */ | |
56be3814 | 3839 | regcache_raw_supply (regcache, i, NULL); |
74ca34ce DJ |
3840 | } |
3841 | } | |
3842 | ||
c906108c SS |
3843 | /* Prepare to store registers. Since we may send them all (using a |
3844 | 'G' request), we have to read out the ones we don't want to change | |
3845 | first. */ | |
3846 | ||
c5aa993b | 3847 | static void |
316f2060 | 3848 | remote_prepare_to_store (struct regcache *regcache) |
c906108c | 3849 | { |
ea9c271d | 3850 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cf0e1e0d | 3851 | int i; |
cfd77fa1 | 3852 | gdb_byte buf[MAX_REGISTER_SIZE]; |
cf0e1e0d | 3853 | |
c906108c | 3854 | /* Make sure the entire registers array is valid. */ |
444abaca | 3855 | switch (remote_protocol_packets[PACKET_P].support) |
5a2468f5 JM |
3856 | { |
3857 | case PACKET_DISABLE: | |
3858 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 3859 | /* Make sure all the necessary registers are cached. */ |
f57d151a | 3860 | for (i = 0; i < gdbarch_num_regs (current_gdbarch); i++) |
ea9c271d | 3861 | if (rsa->regs[i].in_g_packet) |
316f2060 | 3862 | regcache_raw_read (regcache, rsa->regs[i].regnum, buf); |
5a2468f5 JM |
3863 | break; |
3864 | case PACKET_ENABLE: | |
3865 | break; | |
3866 | } | |
3867 | } | |
3868 | ||
ad10f812 | 3869 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 3870 | packet was not recognized. */ |
5a2468f5 JM |
3871 | |
3872 | static int | |
56be3814 | 3873 | store_register_using_P (const struct regcache *regcache, struct packet_reg *reg) |
5a2468f5 | 3874 | { |
d01949b6 | 3875 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 3876 | struct remote_arch_state *rsa = get_remote_arch_state (); |
5a2468f5 | 3877 | /* Try storing a single register. */ |
6d820c5c | 3878 | char *buf = rs->buf; |
cfd77fa1 | 3879 | gdb_byte regp[MAX_REGISTER_SIZE]; |
5a2468f5 | 3880 | char *p; |
5a2468f5 | 3881 | |
74ca34ce DJ |
3882 | if (remote_protocol_packets[PACKET_P].support == PACKET_DISABLE) |
3883 | return 0; | |
3884 | ||
3885 | if (reg->pnum == -1) | |
3886 | return 0; | |
3887 | ||
ea9c271d | 3888 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 3889 | p = buf + strlen (buf); |
56be3814 | 3890 | regcache_raw_collect (regcache, reg->regnum, regp); |
3acba339 | 3891 | bin2hex (regp, p, register_size (current_gdbarch, reg->regnum)); |
6d820c5c | 3892 | remote_send (&rs->buf, &rs->buf_size); |
5a2468f5 | 3893 | |
74ca34ce DJ |
3894 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
3895 | { | |
3896 | case PACKET_OK: | |
3897 | return 1; | |
3898 | case PACKET_ERROR: | |
3899 | error (_("Could not write register \"%s\""), | |
3900 | gdbarch_register_name (current_gdbarch, reg->regnum)); | |
3901 | case PACKET_UNKNOWN: | |
3902 | return 0; | |
3903 | default: | |
3904 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
3905 | } | |
c906108c SS |
3906 | } |
3907 | ||
23860348 MS |
3908 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
3909 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
3910 | |
3911 | static void | |
56be3814 | 3912 | store_registers_using_G (const struct regcache *regcache) |
c906108c | 3913 | { |
d01949b6 | 3914 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 3915 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cfd77fa1 | 3916 | gdb_byte *regs; |
c906108c SS |
3917 | char *p; |
3918 | ||
193cb69f AC |
3919 | /* Extract all the registers in the regcache copying them into a |
3920 | local buffer. */ | |
3921 | { | |
b323314b | 3922 | int i; |
ea9c271d DJ |
3923 | regs = alloca (rsa->sizeof_g_packet); |
3924 | memset (regs, 0, rsa->sizeof_g_packet); | |
f57d151a | 3925 | for (i = 0; i < gdbarch_num_regs (current_gdbarch); i++) |
193cb69f | 3926 | { |
ea9c271d | 3927 | struct packet_reg *r = &rsa->regs[i]; |
b323314b | 3928 | if (r->in_g_packet) |
56be3814 | 3929 | regcache_raw_collect (regcache, r->regnum, regs + r->offset); |
193cb69f AC |
3930 | } |
3931 | } | |
c906108c SS |
3932 | |
3933 | /* Command describes registers byte by byte, | |
3934 | each byte encoded as two hex characters. */ | |
6d820c5c | 3935 | p = rs->buf; |
193cb69f | 3936 | *p++ = 'G'; |
74ca34ce DJ |
3937 | /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets |
3938 | updated. */ | |
3939 | bin2hex (regs, p, rsa->sizeof_g_packet); | |
6d820c5c | 3940 | remote_send (&rs->buf, &rs->buf_size); |
c906108c | 3941 | } |
74ca34ce DJ |
3942 | |
3943 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
3944 | of the register cache buffer. FIXME: ignores errors. */ | |
3945 | ||
3946 | static void | |
56be3814 | 3947 | remote_store_registers (struct regcache *regcache, int regnum) |
74ca34ce DJ |
3948 | { |
3949 | struct remote_state *rs = get_remote_state (); | |
3950 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
3951 | int i; | |
3952 | ||
3953 | set_thread (PIDGET (inferior_ptid), 1); | |
3954 | ||
3955 | if (regnum >= 0) | |
3956 | { | |
3957 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
3958 | gdb_assert (reg != NULL); | |
3959 | ||
3960 | /* Always prefer to store registers using the 'P' packet if | |
3961 | possible; we often change only a small number of registers. | |
3962 | Sometimes we change a larger number; we'd need help from a | |
3963 | higher layer to know to use 'G'. */ | |
56be3814 | 3964 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
3965 | return; |
3966 | ||
3967 | /* For now, don't complain if we have no way to write the | |
3968 | register. GDB loses track of unavailable registers too | |
3969 | easily. Some day, this may be an error. We don't have | |
3970 | any way to read the register, either... */ | |
3971 | if (!reg->in_g_packet) | |
3972 | return; | |
3973 | ||
56be3814 | 3974 | store_registers_using_G (regcache); |
74ca34ce DJ |
3975 | return; |
3976 | } | |
3977 | ||
56be3814 | 3978 | store_registers_using_G (regcache); |
74ca34ce | 3979 | |
f57d151a | 3980 | for (i = 0; i < gdbarch_num_regs (current_gdbarch); i++) |
74ca34ce | 3981 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 3982 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
3983 | /* See above for why we do not issue an error here. */ |
3984 | continue; | |
3985 | } | |
c906108c SS |
3986 | \f |
3987 | ||
3988 | /* Return the number of hex digits in num. */ | |
3989 | ||
3990 | static int | |
fba45db2 | 3991 | hexnumlen (ULONGEST num) |
c906108c SS |
3992 | { |
3993 | int i; | |
3994 | ||
3995 | for (i = 0; num != 0; i++) | |
3996 | num >>= 4; | |
3997 | ||
3998 | return max (i, 1); | |
3999 | } | |
4000 | ||
2df3850c | 4001 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
4002 | |
4003 | static int | |
fba45db2 | 4004 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 4005 | { |
c906108c | 4006 | int len = hexnumlen (num); |
2df3850c JM |
4007 | return hexnumnstr (buf, num, len); |
4008 | } | |
4009 | ||
c906108c | 4010 | |
2df3850c | 4011 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 4012 | |
2df3850c | 4013 | static int |
fba45db2 | 4014 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
4015 | { |
4016 | int i; | |
4017 | ||
4018 | buf[width] = '\0'; | |
4019 | ||
4020 | for (i = width - 1; i >= 0; i--) | |
c906108c | 4021 | { |
c5aa993b | 4022 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
4023 | num >>= 4; |
4024 | } | |
4025 | ||
2df3850c | 4026 | return width; |
c906108c SS |
4027 | } |
4028 | ||
23860348 | 4029 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
4030 | |
4031 | static CORE_ADDR | |
fba45db2 | 4032 | remote_address_masked (CORE_ADDR addr) |
c906108c | 4033 | { |
911c95a5 UW |
4034 | int address_size = remote_address_size; |
4035 | /* If "remoteaddresssize" was not set, default to target address size. */ | |
4036 | if (!address_size) | |
4037 | address_size = gdbarch_addr_bit (current_gdbarch); | |
4038 | ||
4039 | if (address_size > 0 | |
4040 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
4041 | { |
4042 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 4043 | in a ULONGEST variable. */ |
c906108c | 4044 | ULONGEST mask = 1; |
911c95a5 | 4045 | mask = (mask << address_size) - 1; |
c906108c SS |
4046 | addr &= mask; |
4047 | } | |
4048 | return addr; | |
4049 | } | |
4050 | ||
a31ea83d DJ |
4051 | /* Convert BUFFER, binary data at least LEN bytes long, into escaped |
4052 | binary data in OUT_BUF. Set *OUT_LEN to the length of the data | |
4053 | encoded in OUT_BUF, and return the number of bytes in OUT_BUF | |
4054 | (which may be more than *OUT_LEN due to escape characters). The | |
4055 | total number of bytes in the output buffer will be at most | |
4056 | OUT_MAXLEN. */ | |
4057 | ||
4058 | static int | |
4059 | remote_escape_output (const gdb_byte *buffer, int len, | |
4060 | gdb_byte *out_buf, int *out_len, | |
4061 | int out_maxlen) | |
4062 | { | |
4063 | int input_index, output_index; | |
4064 | ||
4065 | output_index = 0; | |
4066 | for (input_index = 0; input_index < len; input_index++) | |
4067 | { | |
4068 | gdb_byte b = buffer[input_index]; | |
4069 | ||
4070 | if (b == '$' || b == '#' || b == '}') | |
4071 | { | |
4072 | /* These must be escaped. */ | |
4073 | if (output_index + 2 > out_maxlen) | |
4074 | break; | |
4075 | out_buf[output_index++] = '}'; | |
4076 | out_buf[output_index++] = b ^ 0x20; | |
4077 | } | |
4078 | else | |
4079 | { | |
4080 | if (output_index + 1 > out_maxlen) | |
4081 | break; | |
4082 | out_buf[output_index++] = b; | |
4083 | } | |
4084 | } | |
4085 | ||
4086 | *out_len = input_index; | |
4087 | return output_index; | |
4088 | } | |
4089 | ||
0876f84a DJ |
4090 | /* Convert BUFFER, escaped data LEN bytes long, into binary data |
4091 | in OUT_BUF. Return the number of bytes written to OUT_BUF. | |
4092 | Raise an error if the total number of bytes exceeds OUT_MAXLEN. | |
4093 | ||
4094 | This function reverses remote_escape_output. It allows more | |
4095 | escaped characters than that function does, in particular because | |
4096 | '*' must be escaped to avoid the run-length encoding processing | |
4097 | in reading packets. */ | |
4098 | ||
4099 | static int | |
4100 | remote_unescape_input (const gdb_byte *buffer, int len, | |
4101 | gdb_byte *out_buf, int out_maxlen) | |
4102 | { | |
4103 | int input_index, output_index; | |
4104 | int escaped; | |
4105 | ||
4106 | output_index = 0; | |
4107 | escaped = 0; | |
4108 | for (input_index = 0; input_index < len; input_index++) | |
4109 | { | |
4110 | gdb_byte b = buffer[input_index]; | |
4111 | ||
4112 | if (output_index + 1 > out_maxlen) | |
4113 | { | |
4114 | warning (_("Received too much data from remote target;" | |
4115 | " ignoring overflow.")); | |
4116 | return output_index; | |
4117 | } | |
4118 | ||
4119 | if (escaped) | |
4120 | { | |
4121 | out_buf[output_index++] = b ^ 0x20; | |
4122 | escaped = 0; | |
4123 | } | |
4124 | else if (b == '}') | |
4125 | escaped = 1; | |
4126 | else | |
4127 | out_buf[output_index++] = b; | |
4128 | } | |
4129 | ||
4130 | if (escaped) | |
4131 | error (_("Unmatched escape character in target response.")); | |
4132 | ||
4133 | return output_index; | |
4134 | } | |
4135 | ||
c906108c SS |
4136 | /* Determine whether the remote target supports binary downloading. |
4137 | This is accomplished by sending a no-op memory write of zero length | |
4138 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
4139 | the whole packet, since many stubs strip the eighth bit and |
4140 | subsequently compute a wrong checksum, which causes real havoc with | |
4141 | remote_write_bytes. | |
7a292a7a | 4142 | |
96baa820 JM |
4143 | NOTE: This can still lose if the serial line is not eight-bit |
4144 | clean. In cases like this, the user should clear "remote | |
23860348 | 4145 | X-packet". */ |
96baa820 | 4146 | |
c906108c | 4147 | static void |
fba45db2 | 4148 | check_binary_download (CORE_ADDR addr) |
c906108c | 4149 | { |
d01949b6 | 4150 | struct remote_state *rs = get_remote_state (); |
24b06219 | 4151 | |
444abaca | 4152 | switch (remote_protocol_packets[PACKET_X].support) |
c906108c | 4153 | { |
96baa820 JM |
4154 | case PACKET_DISABLE: |
4155 | break; | |
4156 | case PACKET_ENABLE: | |
4157 | break; | |
4158 | case PACKET_SUPPORT_UNKNOWN: | |
4159 | { | |
96baa820 | 4160 | char *p; |
802188a7 | 4161 | |
2e9f7625 | 4162 | p = rs->buf; |
96baa820 JM |
4163 | *p++ = 'X'; |
4164 | p += hexnumstr (p, (ULONGEST) addr); | |
4165 | *p++ = ','; | |
4166 | p += hexnumstr (p, (ULONGEST) 0); | |
4167 | *p++ = ':'; | |
4168 | *p = '\0'; | |
802188a7 | 4169 | |
2e9f7625 | 4170 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 4171 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 4172 | |
2e9f7625 | 4173 | if (rs->buf[0] == '\0') |
96baa820 JM |
4174 | { |
4175 | if (remote_debug) | |
4176 | fprintf_unfiltered (gdb_stdlog, | |
4177 | "binary downloading NOT suppported by target\n"); | |
444abaca | 4178 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
4179 | } |
4180 | else | |
4181 | { | |
4182 | if (remote_debug) | |
4183 | fprintf_unfiltered (gdb_stdlog, | |
4184 | "binary downloading suppported by target\n"); | |
444abaca | 4185 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
4186 | } |
4187 | break; | |
4188 | } | |
c906108c SS |
4189 | } |
4190 | } | |
4191 | ||
4192 | /* Write memory data directly to the remote machine. | |
4193 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 4194 | HEADER is the starting part of the packet. |
c906108c SS |
4195 | MEMADDR is the address in the remote memory space. |
4196 | MYADDR is the address of the buffer in our space. | |
4197 | LEN is the number of bytes. | |
a76d924d DJ |
4198 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
4199 | should send data as binary ('X'), or hex-encoded ('M'). | |
4200 | ||
4201 | The function creates packet of the form | |
4202 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
4203 | ||
4204 | where encoding of <DATA> is termined by PACKET_FORMAT. | |
4205 | ||
4206 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
4207 | are omitted. | |
4208 | ||
4209 | Returns the number of bytes transferred, or 0 (setting errno) for | |
23860348 | 4210 | error. Only transfer a single packet. */ |
c906108c | 4211 | |
a76d924d DJ |
4212 | static int |
4213 | remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, | |
4214 | const gdb_byte *myaddr, int len, | |
4215 | char packet_format, int use_length) | |
c906108c | 4216 | { |
6d820c5c | 4217 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 4218 | char *p; |
a76d924d DJ |
4219 | char *plen = NULL; |
4220 | int plenlen = 0; | |
917317f4 JM |
4221 | int todo; |
4222 | int nr_bytes; | |
a257b5bb | 4223 | int payload_size; |
6765f3e5 | 4224 | int payload_length; |
a76d924d DJ |
4225 | int header_length; |
4226 | ||
4227 | if (packet_format != 'X' && packet_format != 'M') | |
4228 | internal_error (__FILE__, __LINE__, | |
4229 | "remote_write_bytes_aux: bad packet format"); | |
c906108c | 4230 | |
b2182ed2 DJ |
4231 | if (len <= 0) |
4232 | return 0; | |
4233 | ||
3de11b2e | 4234 | payload_size = get_memory_write_packet_size (); |
2bc416ba | 4235 | |
6d820c5c DJ |
4236 | /* The packet buffer will be large enough for the payload; |
4237 | get_memory_packet_size ensures this. */ | |
a76d924d | 4238 | rs->buf[0] = '\0'; |
c906108c | 4239 | |
a257b5bb | 4240 | /* Compute the size of the actual payload by subtracting out the |
3de11b2e NS |
4241 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". |
4242 | */ | |
a76d924d DJ |
4243 | payload_size -= strlen ("$,:#NN"); |
4244 | if (!use_length) | |
4245 | /* The comma won't be used. */ | |
4246 | payload_size += 1; | |
4247 | header_length = strlen (header); | |
4248 | payload_size -= header_length; | |
3de11b2e | 4249 | payload_size -= hexnumlen (memaddr); |
c906108c | 4250 | |
a76d924d | 4251 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 4252 | |
a76d924d DJ |
4253 | strcat (rs->buf, header); |
4254 | p = rs->buf + strlen (header); | |
4255 | ||
4256 | /* Compute a best guess of the number of bytes actually transfered. */ | |
4257 | if (packet_format == 'X') | |
c906108c | 4258 | { |
23860348 | 4259 | /* Best guess at number of bytes that will fit. */ |
a257b5bb | 4260 | todo = min (len, payload_size); |
a76d924d DJ |
4261 | if (use_length) |
4262 | payload_size -= hexnumlen (todo); | |
3de11b2e | 4263 | todo = min (todo, payload_size); |
a76d924d DJ |
4264 | } |
4265 | else | |
4266 | { | |
23860348 | 4267 | /* Num bytes that will fit. */ |
a257b5bb | 4268 | todo = min (len, payload_size / 2); |
a76d924d DJ |
4269 | if (use_length) |
4270 | payload_size -= hexnumlen (todo); | |
3de11b2e | 4271 | todo = min (todo, payload_size / 2); |
917317f4 | 4272 | } |
a76d924d | 4273 | |
3de11b2e NS |
4274 | if (todo <= 0) |
4275 | internal_error (__FILE__, __LINE__, | |
4276 | _("minumum packet size too small to write data")); | |
802188a7 | 4277 | |
6765f3e5 DJ |
4278 | /* If we already need another packet, then try to align the end |
4279 | of this packet to a useful boundary. */ | |
4280 | if (todo > 2 * REMOTE_ALIGN_WRITES && todo < len) | |
4281 | todo = ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
4282 | ||
a257b5bb | 4283 | /* Append "<memaddr>". */ |
917317f4 JM |
4284 | memaddr = remote_address_masked (memaddr); |
4285 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 4286 | |
a76d924d DJ |
4287 | if (use_length) |
4288 | { | |
4289 | /* Append ",". */ | |
4290 | *p++ = ','; | |
802188a7 | 4291 | |
a76d924d DJ |
4292 | /* Append <len>. Retain the location/size of <len>. It may need to |
4293 | be adjusted once the packet body has been created. */ | |
4294 | plen = p; | |
4295 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
4296 | p += plenlen; | |
4297 | } | |
a257b5bb AC |
4298 | |
4299 | /* Append ":". */ | |
917317f4 JM |
4300 | *p++ = ':'; |
4301 | *p = '\0'; | |
802188a7 | 4302 | |
a257b5bb | 4303 | /* Append the packet body. */ |
a76d924d | 4304 | if (packet_format == 'X') |
917317f4 | 4305 | { |
917317f4 JM |
4306 | /* Binary mode. Send target system values byte by byte, in |
4307 | increasing byte addresses. Only escape certain critical | |
4308 | characters. */ | |
6765f3e5 DJ |
4309 | payload_length = remote_escape_output (myaddr, todo, p, &nr_bytes, |
4310 | payload_size); | |
4311 | ||
4312 | /* If not all TODO bytes fit, then we'll need another packet. Make | |
9b7194bc DJ |
4313 | a second try to keep the end of the packet aligned. Don't do |
4314 | this if the packet is tiny. */ | |
4315 | if (nr_bytes < todo && nr_bytes > 2 * REMOTE_ALIGN_WRITES) | |
6765f3e5 DJ |
4316 | { |
4317 | int new_nr_bytes; | |
4318 | ||
4319 | new_nr_bytes = (((memaddr + nr_bytes) & ~(REMOTE_ALIGN_WRITES - 1)) | |
4320 | - memaddr); | |
4321 | if (new_nr_bytes != nr_bytes) | |
4322 | payload_length = remote_escape_output (myaddr, new_nr_bytes, | |
4323 | p, &nr_bytes, | |
4324 | payload_size); | |
4325 | } | |
4326 | ||
4327 | p += payload_length; | |
a76d924d | 4328 | if (use_length && nr_bytes < todo) |
c906108c | 4329 | { |
802188a7 | 4330 | /* Escape chars have filled up the buffer prematurely, |
917317f4 JM |
4331 | and we have actually sent fewer bytes than planned. |
4332 | Fix-up the length field of the packet. Use the same | |
4333 | number of characters as before. */ | |
917317f4 JM |
4334 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); |
4335 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 4336 | } |
a76d924d DJ |
4337 | } |
4338 | else | |
4339 | { | |
917317f4 JM |
4340 | /* Normal mode: Send target system values byte by byte, in |
4341 | increasing byte addresses. Each byte is encoded as a two hex | |
4342 | value. */ | |
2644f393 | 4343 | nr_bytes = bin2hex (myaddr, p, todo); |
aa6c0017 | 4344 | p += 2 * nr_bytes; |
c906108c | 4345 | } |
802188a7 | 4346 | |
2e9f7625 | 4347 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 4348 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 4349 | |
2e9f7625 | 4350 | if (rs->buf[0] == 'E') |
917317f4 JM |
4351 | { |
4352 | /* There is no correspondance between what the remote protocol | |
4353 | uses for errors and errno codes. We would like a cleaner way | |
4354 | of representing errors (big enough to include errno codes, | |
4355 | bfd_error codes, and others). But for now just return EIO. */ | |
4356 | errno = EIO; | |
4357 | return 0; | |
4358 | } | |
802188a7 | 4359 | |
23860348 MS |
4360 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send |
4361 | fewer bytes than we'd planned. */ | |
917317f4 | 4362 | return nr_bytes; |
c906108c SS |
4363 | } |
4364 | ||
a76d924d DJ |
4365 | /* Write memory data directly to the remote machine. |
4366 | This does not inform the data cache; the data cache uses this. | |
4367 | MEMADDR is the address in the remote memory space. | |
4368 | MYADDR is the address of the buffer in our space. | |
4369 | LEN is the number of bytes. | |
4370 | ||
4371 | Returns number of bytes transferred, or 0 (setting errno) for | |
4372 | error. Only transfer a single packet. */ | |
4373 | ||
4374 | int | |
4375 | remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, int len) | |
4376 | { | |
4377 | char *packet_format = 0; | |
4378 | ||
4379 | /* Check whether the target supports binary download. */ | |
4380 | check_binary_download (memaddr); | |
4381 | ||
4382 | switch (remote_protocol_packets[PACKET_X].support) | |
4383 | { | |
4384 | case PACKET_ENABLE: | |
4385 | packet_format = "X"; | |
4386 | break; | |
4387 | case PACKET_DISABLE: | |
4388 | packet_format = "M"; | |
4389 | break; | |
4390 | case PACKET_SUPPORT_UNKNOWN: | |
4391 | internal_error (__FILE__, __LINE__, | |
4392 | _("remote_write_bytes: bad internal state")); | |
4393 | default: | |
4394 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
4395 | } | |
4396 | ||
4397 | return remote_write_bytes_aux (packet_format, | |
4398 | memaddr, myaddr, len, packet_format[0], 1); | |
4399 | } | |
4400 | ||
c906108c SS |
4401 | /* Read memory data directly from the remote machine. |
4402 | This does not use the data cache; the data cache uses this. | |
4403 | MEMADDR is the address in the remote memory space. | |
4404 | MYADDR is the address of the buffer in our space. | |
4405 | LEN is the number of bytes. | |
4406 | ||
4407 | Returns number of bytes transferred, or 0 for error. */ | |
4408 | ||
917317f4 JM |
4409 | /* NOTE: cagney/1999-10-18: This function (and its siblings in other |
4410 | remote targets) shouldn't attempt to read the entire buffer. | |
4411 | Instead it should read a single packet worth of data and then | |
4412 | return the byte size of that packet to the caller. The caller (its | |
4413 | caller and its callers caller ;-) already contains code for | |
23860348 | 4414 | handling partial reads. */ |
917317f4 | 4415 | |
449092f6 | 4416 | int |
cfd77fa1 | 4417 | remote_read_bytes (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
c906108c | 4418 | { |
6d820c5c | 4419 | struct remote_state *rs = get_remote_state (); |
23860348 | 4420 | int max_buf_size; /* Max size of packet output buffer. */ |
c906108c SS |
4421 | int origlen; |
4422 | ||
b2182ed2 DJ |
4423 | if (len <= 0) |
4424 | return 0; | |
4425 | ||
11cf8741 | 4426 | max_buf_size = get_memory_read_packet_size (); |
6d820c5c DJ |
4427 | /* The packet buffer will be large enough for the payload; |
4428 | get_memory_packet_size ensures this. */ | |
c906108c SS |
4429 | |
4430 | origlen = len; | |
4431 | while (len > 0) | |
4432 | { | |
c906108c SS |
4433 | char *p; |
4434 | int todo; | |
4435 | int i; | |
4436 | ||
c5aa993b | 4437 | todo = min (len, max_buf_size / 2); /* num bytes that will fit */ |
c906108c SS |
4438 | |
4439 | /* construct "m"<memaddr>","<len>" */ | |
2e9f7625 | 4440 | /* sprintf (rs->buf, "m%lx,%x", (unsigned long) memaddr, todo); */ |
c906108c | 4441 | memaddr = remote_address_masked (memaddr); |
2e9f7625 | 4442 | p = rs->buf; |
c906108c SS |
4443 | *p++ = 'm'; |
4444 | p += hexnumstr (p, (ULONGEST) memaddr); | |
4445 | *p++ = ','; | |
4446 | p += hexnumstr (p, (ULONGEST) todo); | |
4447 | *p = '\0'; | |
4448 | ||
2e9f7625 | 4449 | putpkt (rs->buf); |
6d820c5c | 4450 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 4451 | |
2e9f7625 DJ |
4452 | if (rs->buf[0] == 'E' |
4453 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
4454 | && rs->buf[3] == '\0') | |
c906108c | 4455 | { |
23860348 MS |
4456 | /* There is no correspondance between what the remote |
4457 | protocol uses for errors and errno codes. We would like | |
4458 | a cleaner way of representing errors (big enough to | |
4459 | include errno codes, bfd_error codes, and others). But | |
4460 | for now just return EIO. */ | |
c906108c SS |
4461 | errno = EIO; |
4462 | return 0; | |
4463 | } | |
4464 | ||
c5aa993b JM |
4465 | /* Reply describes memory byte by byte, |
4466 | each byte encoded as two hex characters. */ | |
c906108c | 4467 | |
2e9f7625 | 4468 | p = rs->buf; |
30559e10 | 4469 | if ((i = hex2bin (p, myaddr, todo)) < todo) |
c906108c | 4470 | { |
30559e10 | 4471 | /* Reply is short. This means that we were able to read |
23860348 | 4472 | only part of what we wanted to. */ |
30559e10 | 4473 | return i + (origlen - len); |
c906108c SS |
4474 | } |
4475 | myaddr += todo; | |
4476 | memaddr += todo; | |
4477 | len -= todo; | |
4478 | } | |
4479 | return origlen; | |
4480 | } | |
4481 | \f | |
4482 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
23860348 MS |
4483 | transferring to or from debugger address BUFFER. Write to inferior |
4484 | if SHOULD_WRITE is nonzero. Returns length of data written or | |
4485 | read; 0 for error. TARGET is unused. */ | |
392a587b | 4486 | |
c906108c | 4487 | static int |
961cb7b5 | 4488 | remote_xfer_memory (CORE_ADDR mem_addr, gdb_byte *buffer, int mem_len, |
0a65a603 | 4489 | int should_write, struct mem_attrib *attrib, |
29e57380 | 4490 | struct target_ops *target) |
c906108c | 4491 | { |
4930751a C |
4492 | int res; |
4493 | ||
4930751a | 4494 | if (should_write) |
b2182ed2 | 4495 | res = remote_write_bytes (mem_addr, buffer, mem_len); |
4930751a | 4496 | else |
b2182ed2 | 4497 | res = remote_read_bytes (mem_addr, buffer, mem_len); |
4930751a C |
4498 | |
4499 | return res; | |
c906108c SS |
4500 | } |
4501 | ||
a76d924d DJ |
4502 | /* Sends a packet with content determined by the printf format string |
4503 | FORMAT and the remaining arguments, then gets the reply. Returns | |
4504 | whether the packet was a success, a failure, or unknown. */ | |
4505 | ||
4506 | enum packet_result | |
4507 | remote_send_printf (const char *format, ...) | |
4508 | { | |
4509 | struct remote_state *rs = get_remote_state (); | |
4510 | int max_size = get_remote_packet_size (); | |
4511 | ||
4512 | va_list ap; | |
4513 | va_start (ap, format); | |
4514 | ||
4515 | rs->buf[0] = '\0'; | |
4516 | if (vsnprintf (rs->buf, max_size, format, ap) >= max_size) | |
4517 | internal_error (__FILE__, __LINE__, "Too long remote packet."); | |
4518 | ||
4519 | if (putpkt (rs->buf) < 0) | |
4520 | error (_("Communication problem with target.")); | |
4521 | ||
4522 | rs->buf[0] = '\0'; | |
4523 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4524 | ||
4525 | return packet_check_result (rs->buf); | |
4526 | } | |
4527 | ||
4528 | static void | |
4529 | restore_remote_timeout (void *p) | |
4530 | { | |
4531 | int value = *(int *)p; | |
4532 | remote_timeout = value; | |
4533 | } | |
4534 | ||
4535 | /* Flash writing can take quite some time. We'll set | |
4536 | effectively infinite timeout for flash operations. | |
4537 | In future, we'll need to decide on a better approach. */ | |
4538 | static const int remote_flash_timeout = 1000; | |
4539 | ||
4540 | static void | |
4541 | remote_flash_erase (struct target_ops *ops, | |
4542 | ULONGEST address, LONGEST length) | |
4543 | { | |
4544 | int saved_remote_timeout = remote_timeout; | |
4545 | enum packet_result ret; | |
4546 | ||
4547 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
4548 | &saved_remote_timeout); | |
4549 | remote_timeout = remote_flash_timeout; | |
4550 | ||
4551 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
4552 | paddr (address), | |
4553 | phex (length, 4)); | |
4554 | switch (ret) | |
4555 | { | |
4556 | case PACKET_UNKNOWN: | |
4557 | error (_("Remote target does not support flash erase")); | |
4558 | case PACKET_ERROR: | |
4559 | error (_("Error erasing flash with vFlashErase packet")); | |
4560 | default: | |
4561 | break; | |
4562 | } | |
4563 | ||
4564 | do_cleanups (back_to); | |
4565 | } | |
4566 | ||
4567 | static LONGEST | |
4568 | remote_flash_write (struct target_ops *ops, | |
4569 | ULONGEST address, LONGEST length, | |
4570 | const gdb_byte *data) | |
4571 | { | |
4572 | int saved_remote_timeout = remote_timeout; | |
4573 | int ret; | |
4574 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
4575 | &saved_remote_timeout); | |
4576 | ||
4577 | remote_timeout = remote_flash_timeout; | |
4578 | ret = remote_write_bytes_aux ("vFlashWrite:", address, data, length, 'X', 0); | |
4579 | do_cleanups (back_to); | |
4580 | ||
4581 | return ret; | |
4582 | } | |
4583 | ||
4584 | static void | |
4585 | remote_flash_done (struct target_ops *ops) | |
4586 | { | |
4587 | int saved_remote_timeout = remote_timeout; | |
4588 | int ret; | |
4589 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
4590 | &saved_remote_timeout); | |
4591 | ||
4592 | remote_timeout = remote_flash_timeout; | |
4593 | ret = remote_send_printf ("vFlashDone"); | |
4594 | do_cleanups (back_to); | |
4595 | ||
4596 | switch (ret) | |
4597 | { | |
4598 | case PACKET_UNKNOWN: | |
4599 | error (_("Remote target does not support vFlashDone")); | |
4600 | case PACKET_ERROR: | |
4601 | error (_("Error finishing flash operation")); | |
4602 | default: | |
4603 | break; | |
4604 | } | |
4605 | } | |
4606 | ||
c906108c | 4607 | static void |
fba45db2 | 4608 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
4609 | { |
4610 | puts_filtered ("Debugging a target over a serial line.\n"); | |
4611 | } | |
4612 | \f | |
4613 | /* Stuff for dealing with the packets which are part of this protocol. | |
4614 | See comment at top of file for details. */ | |
4615 | ||
0876f84a | 4616 | /* Read a single character from the remote end. */ |
c906108c SS |
4617 | |
4618 | static int | |
fba45db2 | 4619 | readchar (int timeout) |
c906108c SS |
4620 | { |
4621 | int ch; | |
4622 | ||
2cd58942 | 4623 | ch = serial_readchar (remote_desc, timeout); |
c906108c | 4624 | |
2acceee2 | 4625 | if (ch >= 0) |
0876f84a | 4626 | return ch; |
2acceee2 JM |
4627 | |
4628 | switch ((enum serial_rc) ch) | |
c906108c SS |
4629 | { |
4630 | case SERIAL_EOF: | |
2acceee2 | 4631 | target_mourn_inferior (); |
8a3fe4f8 | 4632 | error (_("Remote connection closed")); |
2acceee2 | 4633 | /* no return */ |
c906108c | 4634 | case SERIAL_ERROR: |
e2e0b3e5 | 4635 | perror_with_name (_("Remote communication error")); |
2acceee2 | 4636 | /* no return */ |
c906108c | 4637 | case SERIAL_TIMEOUT: |
2acceee2 | 4638 | break; |
c906108c | 4639 | } |
2acceee2 | 4640 | return ch; |
c906108c SS |
4641 | } |
4642 | ||
6d820c5c DJ |
4643 | /* Send the command in *BUF to the remote machine, and read the reply |
4644 | into *BUF. Report an error if we get an error reply. Resize | |
4645 | *BUF using xrealloc if necessary to hold the result, and update | |
4646 | *SIZEOF_BUF. */ | |
c906108c SS |
4647 | |
4648 | static void | |
6d820c5c DJ |
4649 | remote_send (char **buf, |
4650 | long *sizeof_buf) | |
c906108c | 4651 | { |
6d820c5c | 4652 | putpkt (*buf); |
c2d11a7d | 4653 | getpkt (buf, sizeof_buf, 0); |
c906108c | 4654 | |
6d820c5c DJ |
4655 | if ((*buf)[0] == 'E') |
4656 | error (_("Remote failure reply: %s"), *buf); | |
c906108c SS |
4657 | } |
4658 | ||
4659 | /* Display a null-terminated packet on stdout, for debugging, using C | |
4660 | string notation. */ | |
4661 | ||
4662 | static void | |
fba45db2 | 4663 | print_packet (char *buf) |
c906108c SS |
4664 | { |
4665 | puts_filtered ("\""); | |
43e526b9 | 4666 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
4667 | puts_filtered ("\""); |
4668 | } | |
4669 | ||
4670 | int | |
fba45db2 | 4671 | putpkt (char *buf) |
c906108c SS |
4672 | { |
4673 | return putpkt_binary (buf, strlen (buf)); | |
4674 | } | |
4675 | ||
4676 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 4677 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 4678 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
4679 | and for a possible /0 if we are debugging (remote_debug) and want |
4680 | to print the sent packet as a string. */ | |
c906108c SS |
4681 | |
4682 | static int | |
fba45db2 | 4683 | putpkt_binary (char *buf, int cnt) |
c906108c SS |
4684 | { |
4685 | int i; | |
4686 | unsigned char csum = 0; | |
11cf8741 | 4687 | char *buf2 = alloca (cnt + 6); |
085dd6e6 | 4688 | |
c906108c SS |
4689 | int ch; |
4690 | int tcount = 0; | |
4691 | char *p; | |
4692 | ||
4693 | /* Copy the packet into buffer BUF2, encapsulating it | |
4694 | and giving it a checksum. */ | |
4695 | ||
c906108c SS |
4696 | p = buf2; |
4697 | *p++ = '$'; | |
4698 | ||
4699 | for (i = 0; i < cnt; i++) | |
4700 | { | |
4701 | csum += buf[i]; | |
4702 | *p++ = buf[i]; | |
4703 | } | |
4704 | *p++ = '#'; | |
4705 | *p++ = tohex ((csum >> 4) & 0xf); | |
4706 | *p++ = tohex (csum & 0xf); | |
4707 | ||
4708 | /* Send it over and over until we get a positive ack. */ | |
4709 | ||
4710 | while (1) | |
4711 | { | |
4712 | int started_error_output = 0; | |
4713 | ||
4714 | if (remote_debug) | |
4715 | { | |
4716 | *p = '\0'; | |
43e526b9 JM |
4717 | fprintf_unfiltered (gdb_stdlog, "Sending packet: "); |
4718 | fputstrn_unfiltered (buf2, p - buf2, 0, gdb_stdlog); | |
d4f3574e | 4719 | fprintf_unfiltered (gdb_stdlog, "..."); |
0f71a2f6 | 4720 | gdb_flush (gdb_stdlog); |
c906108c | 4721 | } |
2cd58942 | 4722 | if (serial_write (remote_desc, buf2, p - buf2)) |
e2e0b3e5 | 4723 | perror_with_name (_("putpkt: write failed")); |
c906108c | 4724 | |
23860348 | 4725 | /* Read until either a timeout occurs (-2) or '+' is read. */ |
c906108c SS |
4726 | while (1) |
4727 | { | |
4728 | ch = readchar (remote_timeout); | |
4729 | ||
c5aa993b | 4730 | if (remote_debug) |
c906108c SS |
4731 | { |
4732 | switch (ch) | |
4733 | { | |
4734 | case '+': | |
1216fa2c | 4735 | case '-': |
c906108c SS |
4736 | case SERIAL_TIMEOUT: |
4737 | case '$': | |
4738 | if (started_error_output) | |
4739 | { | |
4740 | putchar_unfiltered ('\n'); | |
4741 | started_error_output = 0; | |
4742 | } | |
4743 | } | |
4744 | } | |
4745 | ||
4746 | switch (ch) | |
4747 | { | |
4748 | case '+': | |
4749 | if (remote_debug) | |
0f71a2f6 | 4750 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 4751 | return 1; |
1216fa2c AC |
4752 | case '-': |
4753 | if (remote_debug) | |
4754 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
c906108c | 4755 | case SERIAL_TIMEOUT: |
c5aa993b | 4756 | tcount++; |
c906108c SS |
4757 | if (tcount > 3) |
4758 | return 0; | |
23860348 | 4759 | break; /* Retransmit buffer. */ |
c906108c SS |
4760 | case '$': |
4761 | { | |
40e3f985 | 4762 | if (remote_debug) |
2bc416ba | 4763 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 4764 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
4765 | /* It's probably an old response sent because an ACK |
4766 | was lost. Gobble up the packet and ack it so it | |
4767 | doesn't get retransmitted when we resend this | |
4768 | packet. */ | |
6d820c5c | 4769 | skip_frame (); |
d6f7abdf | 4770 | serial_write (remote_desc, "+", 1); |
23860348 | 4771 | continue; /* Now, go look for +. */ |
c906108c SS |
4772 | } |
4773 | default: | |
4774 | if (remote_debug) | |
4775 | { | |
4776 | if (!started_error_output) | |
4777 | { | |
4778 | started_error_output = 1; | |
0f71a2f6 | 4779 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 4780 | } |
0f71a2f6 | 4781 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
4782 | } |
4783 | continue; | |
4784 | } | |
23860348 | 4785 | break; /* Here to retransmit. */ |
c906108c SS |
4786 | } |
4787 | ||
4788 | #if 0 | |
4789 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
4790 | able to get out next time we call QUIT, without anything as |
4791 | violent as interrupt_query. If we want to provide a way out of | |
4792 | here without getting to the next QUIT, it should be based on | |
4793 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
4794 | if (quit_flag) |
4795 | { | |
4796 | quit_flag = 0; | |
4797 | interrupt_query (); | |
4798 | } | |
4799 | #endif | |
4800 | } | |
4801 | } | |
4802 | ||
6d820c5c DJ |
4803 | /* Come here after finding the start of a frame when we expected an |
4804 | ack. Do our best to discard the rest of this packet. */ | |
4805 | ||
4806 | static void | |
4807 | skip_frame (void) | |
4808 | { | |
4809 | int c; | |
4810 | ||
4811 | while (1) | |
4812 | { | |
4813 | c = readchar (remote_timeout); | |
4814 | switch (c) | |
4815 | { | |
4816 | case SERIAL_TIMEOUT: | |
4817 | /* Nothing we can do. */ | |
4818 | return; | |
4819 | case '#': | |
4820 | /* Discard the two bytes of checksum and stop. */ | |
4821 | c = readchar (remote_timeout); | |
4822 | if (c >= 0) | |
4823 | c = readchar (remote_timeout); | |
4824 | ||
4825 | return; | |
4826 | case '*': /* Run length encoding. */ | |
4827 | /* Discard the repeat count. */ | |
4828 | c = readchar (remote_timeout); | |
4829 | if (c < 0) | |
4830 | return; | |
4831 | break; | |
4832 | default: | |
4833 | /* A regular character. */ | |
4834 | break; | |
4835 | } | |
4836 | } | |
4837 | } | |
4838 | ||
c906108c | 4839 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
4840 | into *BUF, verifying the checksum, length, and handling run-length |
4841 | compression. NUL terminate the buffer. If there is not enough room, | |
4842 | expand *BUF using xrealloc. | |
c906108c | 4843 | |
c2d11a7d JM |
4844 | Returns -1 on error, number of characters in buffer (ignoring the |
4845 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 4846 | SERIAL status indications). */ |
c2d11a7d JM |
4847 | |
4848 | static long | |
6d820c5c DJ |
4849 | read_frame (char **buf_p, |
4850 | long *sizeof_buf) | |
c906108c SS |
4851 | { |
4852 | unsigned char csum; | |
c2d11a7d | 4853 | long bc; |
c906108c | 4854 | int c; |
6d820c5c | 4855 | char *buf = *buf_p; |
c906108c SS |
4856 | |
4857 | csum = 0; | |
c2d11a7d | 4858 | bc = 0; |
c906108c SS |
4859 | |
4860 | while (1) | |
4861 | { | |
4862 | c = readchar (remote_timeout); | |
c906108c SS |
4863 | switch (c) |
4864 | { | |
4865 | case SERIAL_TIMEOUT: | |
4866 | if (remote_debug) | |
0f71a2f6 | 4867 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 4868 | return -1; |
c906108c SS |
4869 | case '$': |
4870 | if (remote_debug) | |
0f71a2f6 JM |
4871 | fputs_filtered ("Saw new packet start in middle of old one\n", |
4872 | gdb_stdlog); | |
23860348 | 4873 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
4874 | case '#': |
4875 | { | |
4876 | unsigned char pktcsum; | |
e1b09194 AC |
4877 | int check_0 = 0; |
4878 | int check_1 = 0; | |
c906108c | 4879 | |
c2d11a7d | 4880 | buf[bc] = '\0'; |
c906108c | 4881 | |
e1b09194 AC |
4882 | check_0 = readchar (remote_timeout); |
4883 | if (check_0 >= 0) | |
4884 | check_1 = readchar (remote_timeout); | |
802188a7 | 4885 | |
e1b09194 AC |
4886 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
4887 | { | |
4888 | if (remote_debug) | |
2bc416ba | 4889 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 4890 | gdb_stdlog); |
e1b09194 AC |
4891 | return -1; |
4892 | } | |
4893 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
4894 | { |
4895 | if (remote_debug) | |
2bc416ba | 4896 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 4897 | gdb_stdlog); |
40e3f985 FN |
4898 | return -1; |
4899 | } | |
c906108c | 4900 | |
e1b09194 | 4901 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 4902 | if (csum == pktcsum) |
c2d11a7d | 4903 | return bc; |
c906108c | 4904 | |
c5aa993b | 4905 | if (remote_debug) |
c906108c | 4906 | { |
0f71a2f6 | 4907 | fprintf_filtered (gdb_stdlog, |
c5aa993b | 4908 | "Bad checksum, sentsum=0x%x, csum=0x%x, buf=", |
0f71a2f6 | 4909 | pktcsum, csum); |
0876f84a | 4910 | fputstrn_filtered (buf, bc, 0, gdb_stdlog); |
0f71a2f6 | 4911 | fputs_filtered ("\n", gdb_stdlog); |
c906108c | 4912 | } |
c2d11a7d | 4913 | /* Number of characters in buffer ignoring trailing |
23860348 | 4914 | NULL. */ |
c2d11a7d | 4915 | return -1; |
c906108c | 4916 | } |
23860348 | 4917 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
4918 | { |
4919 | int repeat; | |
4920 | csum += c; | |
c906108c | 4921 | |
b4501125 AC |
4922 | c = readchar (remote_timeout); |
4923 | csum += c; | |
23860348 | 4924 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 4925 | |
23860348 | 4926 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 4927 | |
6d820c5c | 4928 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 4929 | { |
6d820c5c DJ |
4930 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
4931 | { | |
4932 | /* Make some more room in the buffer. */ | |
4933 | *sizeof_buf += repeat; | |
4934 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
4935 | buf = *buf_p; | |
4936 | } | |
4937 | ||
c2d11a7d JM |
4938 | memset (&buf[bc], buf[bc - 1], repeat); |
4939 | bc += repeat; | |
c2c6d25f JM |
4940 | continue; |
4941 | } | |
4942 | ||
c2d11a7d | 4943 | buf[bc] = '\0'; |
6d820c5c | 4944 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 4945 | return -1; |
c2c6d25f | 4946 | } |
c906108c | 4947 | default: |
6d820c5c | 4948 | if (bc >= *sizeof_buf - 1) |
c906108c | 4949 | { |
6d820c5c DJ |
4950 | /* Make some more room in the buffer. */ |
4951 | *sizeof_buf *= 2; | |
4952 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
4953 | buf = *buf_p; | |
c906108c SS |
4954 | } |
4955 | ||
6d820c5c DJ |
4956 | buf[bc++] = c; |
4957 | csum += c; | |
4958 | continue; | |
c906108c SS |
4959 | } |
4960 | } | |
4961 | } | |
4962 | ||
4963 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
4964 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
4965 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
4966 | rather than timing out; this is used (in synchronous mode) to wait | |
4967 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
4968 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
4969 | don't have to change all the calls to getpkt to deal with the | |
4970 | return value, because at the moment I don't know what the right | |
23860348 | 4971 | thing to do it for those. */ |
c906108c | 4972 | void |
6d820c5c DJ |
4973 | getpkt (char **buf, |
4974 | long *sizeof_buf, | |
c2d11a7d | 4975 | int forever) |
d9fcf2fb JM |
4976 | { |
4977 | int timed_out; | |
4978 | ||
4979 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
4980 | } | |
4981 | ||
4982 | ||
4983 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
4984 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
4985 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
4986 | rather than timing out; this is used (in synchronous mode) to wait | |
4987 | for a target that is is executing user code to stop. If FOREVER == | |
4988 | 0, this function is allowed to time out gracefully and return an | |
0876f84a DJ |
4989 | indication of this to the caller. Otherwise return the number |
4990 | of bytes read. */ | |
3172dc30 | 4991 | static int |
6d820c5c | 4992 | getpkt_sane (char **buf, long *sizeof_buf, int forever) |
c906108c SS |
4993 | { |
4994 | int c; | |
4995 | int tries; | |
4996 | int timeout; | |
4997 | int val; | |
4998 | ||
6d820c5c | 4999 | strcpy (*buf, "timeout"); |
c906108c SS |
5000 | |
5001 | if (forever) | |
5002 | { | |
c906108c | 5003 | timeout = watchdog > 0 ? watchdog : -1; |
c906108c SS |
5004 | } |
5005 | ||
5006 | else | |
5007 | timeout = remote_timeout; | |
5008 | ||
5009 | #define MAX_TRIES 3 | |
5010 | ||
5011 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
5012 | { | |
5013 | /* This can loop forever if the remote side sends us characters | |
23860348 MS |
5014 | continuously, but if it pauses, we'll get a zero from |
5015 | readchar because of timeout. Then we'll count that as a | |
5016 | retry. */ | |
c906108c | 5017 | |
23860348 MS |
5018 | /* Note that we will only wait forever prior to the start of a |
5019 | packet. After that, we expect characters to arrive at a | |
5020 | brisk pace. They should show up within remote_timeout | |
5021 | intervals. */ | |
c906108c SS |
5022 | |
5023 | do | |
5024 | { | |
5025 | c = readchar (timeout); | |
5026 | ||
5027 | if (c == SERIAL_TIMEOUT) | |
5028 | { | |
23860348 | 5029 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 5030 | { |
2acceee2 | 5031 | QUIT; |
c906108c | 5032 | target_mourn_inferior (); |
489eaeba | 5033 | error (_("Watchdog timeout has expired. Target detached.")); |
c906108c | 5034 | } |
c906108c | 5035 | if (remote_debug) |
0f71a2f6 | 5036 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c SS |
5037 | goto retry; |
5038 | } | |
5039 | } | |
5040 | while (c != '$'); | |
5041 | ||
5042 | /* We've found the start of a packet, now collect the data. */ | |
5043 | ||
c2d11a7d | 5044 | val = read_frame (buf, sizeof_buf); |
c906108c | 5045 | |
c2d11a7d | 5046 | if (val >= 0) |
c906108c SS |
5047 | { |
5048 | if (remote_debug) | |
43e526b9 JM |
5049 | { |
5050 | fprintf_unfiltered (gdb_stdlog, "Packet received: "); | |
0876f84a | 5051 | fputstrn_unfiltered (*buf, val, 0, gdb_stdlog); |
43e526b9 JM |
5052 | fprintf_unfiltered (gdb_stdlog, "\n"); |
5053 | } | |
2cd58942 | 5054 | serial_write (remote_desc, "+", 1); |
0876f84a | 5055 | return val; |
c906108c SS |
5056 | } |
5057 | ||
5058 | /* Try the whole thing again. */ | |
5059 | retry: | |
2cd58942 | 5060 | serial_write (remote_desc, "-", 1); |
c906108c SS |
5061 | } |
5062 | ||
2bc416ba | 5063 | /* We have tried hard enough, and just can't receive the packet. |
23860348 | 5064 | Give up. */ |
c906108c | 5065 | |
a3f17187 | 5066 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); |
2cd58942 | 5067 | serial_write (remote_desc, "+", 1); |
0876f84a | 5068 | return -1; |
c906108c SS |
5069 | } |
5070 | \f | |
5071 | static void | |
fba45db2 | 5072 | remote_kill (void) |
c906108c SS |
5073 | { |
5074 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
5075 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
5076 | if (kill_kludge) | |
5077 | { | |
5078 | kill_kludge = 0; | |
5079 | target_mourn_inferior (); | |
5080 | return; | |
5081 | } | |
5082 | ||
5083 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
5084 | speaking terms with the remote system. */ | |
c5aa993b | 5085 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
c906108c SS |
5086 | |
5087 | /* Don't wait for it to die. I'm not really sure it matters whether | |
5088 | we do or not. For the existing stubs, kill is a noop. */ | |
5089 | target_mourn_inferior (); | |
5090 | } | |
5091 | ||
23860348 | 5092 | /* Async version of remote_kill. */ |
43ff13b4 | 5093 | static void |
fba45db2 | 5094 | remote_async_kill (void) |
43ff13b4 | 5095 | { |
23860348 | 5096 | /* Unregister the file descriptor from the event loop. */ |
ed9a39eb | 5097 | if (target_is_async_p ()) |
2cd58942 | 5098 | serial_async (remote_desc, NULL, 0); |
43ff13b4 JM |
5099 | |
5100 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
5101 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
5102 | if (kill_kludge) | |
5103 | { | |
5104 | kill_kludge = 0; | |
5105 | target_mourn_inferior (); | |
5106 | return; | |
5107 | } | |
5108 | ||
23860348 MS |
5109 | /* Use catch_errors so the user can quit from gdb even when we |
5110 | aren't on speaking terms with the remote system. */ | |
c5aa993b | 5111 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
5112 | |
5113 | /* Don't wait for it to die. I'm not really sure it matters whether | |
5114 | we do or not. For the existing stubs, kill is a noop. */ | |
5115 | target_mourn_inferior (); | |
5116 | } | |
5117 | ||
c906108c | 5118 | static void |
fba45db2 | 5119 | remote_mourn (void) |
c906108c SS |
5120 | { |
5121 | remote_mourn_1 (&remote_ops); | |
5122 | } | |
5123 | ||
53a5351d | 5124 | static void |
fba45db2 | 5125 | remote_async_mourn (void) |
53a5351d JM |
5126 | { |
5127 | remote_mourn_1 (&remote_async_ops); | |
5128 | } | |
5129 | ||
c906108c | 5130 | static void |
fba45db2 | 5131 | extended_remote_mourn (void) |
c906108c SS |
5132 | { |
5133 | /* We do _not_ want to mourn the target like this; this will | |
5134 | remove the extended remote target from the target stack, | |
802188a7 | 5135 | and the next time the user says "run" it'll fail. |
c906108c SS |
5136 | |
5137 | FIXME: What is the right thing to do here? */ | |
5138 | #if 0 | |
5139 | remote_mourn_1 (&extended_remote_ops); | |
5140 | #endif | |
5141 | } | |
5142 | ||
5143 | /* Worker function for remote_mourn. */ | |
5144 | static void | |
fba45db2 | 5145 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
5146 | { |
5147 | unpush_target (target); | |
5148 | generic_mourn_inferior (); | |
5149 | } | |
5150 | ||
5151 | /* In the extended protocol we want to be able to do things like | |
5152 | "run" and have them basically work as expected. So we need | |
802188a7 | 5153 | a special create_inferior function. |
c906108c SS |
5154 | |
5155 | FIXME: One day add support for changing the exec file | |
5156 | we're debugging, arguments and an environment. */ | |
5157 | ||
5158 | static void | |
23860348 MS |
5159 | extended_remote_create_inferior (char *exec_file, char *args, |
5160 | char **env, int from_tty) | |
c906108c SS |
5161 | { |
5162 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
5163 | the remote server. */ | |
5164 | remove_breakpoints (); | |
5165 | ||
5166 | /* Now restart the remote server. */ | |
5167 | extended_remote_restart (); | |
5168 | ||
424163ea DJ |
5169 | /* NOTE: We don't need to recheck for a target description here; but |
5170 | if we gain the ability to switch the remote executable we may | |
5171 | need to, if for instance we are running a process which requested | |
5172 | different emulated hardware from the operating system. A | |
5173 | concrete example of this is ARM GNU/Linux, where some binaries | |
5174 | will have a legacy FPA coprocessor emulated and others may have | |
5175 | access to a hardware VFP unit. */ | |
5176 | ||
c906108c SS |
5177 | /* Now put the breakpoints back in. This way we're safe if the |
5178 | restart function works via a unix fork on the remote side. */ | |
5179 | insert_breakpoints (); | |
5180 | ||
5181 | /* Clean up from the last time we were running. */ | |
5182 | clear_proceed_status (); | |
c906108c SS |
5183 | } |
5184 | ||
23860348 | 5185 | /* Async version of extended_remote_create_inferior. */ |
43ff13b4 | 5186 | static void |
23860348 MS |
5187 | extended_remote_async_create_inferior (char *exec_file, char *args, |
5188 | char **env, int from_tty) | |
43ff13b4 JM |
5189 | { |
5190 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
5191 | the remote server. */ | |
5192 | remove_breakpoints (); | |
5193 | ||
5194 | /* If running asynchronously, register the target file descriptor | |
23860348 | 5195 | with the event loop. */ |
362646f5 | 5196 | if (target_can_async_p ()) |
2acceee2 | 5197 | target_async (inferior_event_handler, 0); |
43ff13b4 JM |
5198 | |
5199 | /* Now restart the remote server. */ | |
5200 | extended_remote_restart (); | |
5201 | ||
424163ea DJ |
5202 | /* NOTE: We don't need to recheck for a target description here; but |
5203 | if we gain the ability to switch the remote executable we may | |
5204 | need to, if for instance we are running a process which requested | |
5205 | different emulated hardware from the operating system. A | |
5206 | concrete example of this is ARM GNU/Linux, where some binaries | |
5207 | will have a legacy FPA coprocessor emulated and others may have | |
5208 | access to a hardware VFP unit. */ | |
5209 | ||
43ff13b4 JM |
5210 | /* Now put the breakpoints back in. This way we're safe if the |
5211 | restart function works via a unix fork on the remote side. */ | |
5212 | insert_breakpoints (); | |
5213 | ||
5214 | /* Clean up from the last time we were running. */ | |
5215 | clear_proceed_status (); | |
43ff13b4 | 5216 | } |
c906108c | 5217 | \f |
c5aa993b | 5218 | |
8181d85f DJ |
5219 | /* Insert a breakpoint. On targets that have software breakpoint |
5220 | support, we ask the remote target to do the work; on targets | |
5221 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c SS |
5222 | |
5223 | static int | |
8181d85f | 5224 | remote_insert_breakpoint (struct bp_target_info *bp_tgt) |
c906108c | 5225 | { |
8181d85f | 5226 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 5227 | struct remote_state *rs = get_remote_state (); |
96baa820 | 5228 | |
d471ea57 AC |
5229 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
5230 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
5231 | fails, and the user has explicitly requested the Z support then | |
23860348 | 5232 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 5233 | |
444abaca | 5234 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 5235 | { |
6d820c5c | 5236 | char *p = rs->buf; |
802188a7 | 5237 | |
96baa820 JM |
5238 | *(p++) = 'Z'; |
5239 | *(p++) = '0'; | |
5240 | *(p++) = ','; | |
3b3b875c UW |
5241 | gdbarch_breakpoint_from_pc |
5242 | (current_gdbarch, &bp_tgt->placed_address, &bp_tgt->placed_size); | |
8181d85f DJ |
5243 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
5244 | p += hexnumstr (p, addr); | |
5245 | sprintf (p, ",%d", bp_tgt->placed_size); | |
802188a7 | 5246 | |
6d820c5c DJ |
5247 | putpkt (rs->buf); |
5248 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5249 | |
6d820c5c | 5250 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 5251 | { |
d471ea57 AC |
5252 | case PACKET_ERROR: |
5253 | return -1; | |
5254 | case PACKET_OK: | |
5255 | return 0; | |
5256 | case PACKET_UNKNOWN: | |
5257 | break; | |
96baa820 JM |
5258 | } |
5259 | } | |
c906108c | 5260 | |
8181d85f | 5261 | return memory_insert_breakpoint (bp_tgt); |
c906108c SS |
5262 | } |
5263 | ||
5264 | static int | |
8181d85f | 5265 | remote_remove_breakpoint (struct bp_target_info *bp_tgt) |
c906108c | 5266 | { |
8181d85f | 5267 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 5268 | struct remote_state *rs = get_remote_state (); |
96baa820 JM |
5269 | int bp_size; |
5270 | ||
444abaca | 5271 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 5272 | { |
6d820c5c | 5273 | char *p = rs->buf; |
802188a7 | 5274 | |
96baa820 JM |
5275 | *(p++) = 'z'; |
5276 | *(p++) = '0'; | |
5277 | *(p++) = ','; | |
5278 | ||
8181d85f DJ |
5279 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
5280 | p += hexnumstr (p, addr); | |
5281 | sprintf (p, ",%d", bp_tgt->placed_size); | |
802188a7 | 5282 | |
6d820c5c DJ |
5283 | putpkt (rs->buf); |
5284 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5285 | |
6d820c5c | 5286 | return (rs->buf[0] == 'E'); |
96baa820 JM |
5287 | } |
5288 | ||
8181d85f | 5289 | return memory_remove_breakpoint (bp_tgt); |
c906108c SS |
5290 | } |
5291 | ||
d471ea57 AC |
5292 | static int |
5293 | watchpoint_to_Z_packet (int type) | |
5294 | { | |
5295 | switch (type) | |
5296 | { | |
5297 | case hw_write: | |
bb858e6a | 5298 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
5299 | break; |
5300 | case hw_read: | |
bb858e6a | 5301 | return Z_PACKET_READ_WP; |
d471ea57 AC |
5302 | break; |
5303 | case hw_access: | |
bb858e6a | 5304 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
5305 | break; |
5306 | default: | |
8e65ff28 | 5307 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5308 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
5309 | } |
5310 | } | |
5311 | ||
3c3bea1c | 5312 | static int |
fba45db2 | 5313 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 5314 | { |
d01949b6 | 5315 | struct remote_state *rs = get_remote_state (); |
e514a9d6 | 5316 | char *p; |
d471ea57 | 5317 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 5318 | |
444abaca | 5319 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
5cffb350 | 5320 | return -1; |
802188a7 | 5321 | |
6d820c5c DJ |
5322 | sprintf (rs->buf, "Z%x,", packet); |
5323 | p = strchr (rs->buf, '\0'); | |
96baa820 JM |
5324 | addr = remote_address_masked (addr); |
5325 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 5326 | sprintf (p, ",%x", len); |
802188a7 | 5327 | |
6d820c5c DJ |
5328 | putpkt (rs->buf); |
5329 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5330 | |
6d820c5c | 5331 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
5332 | { |
5333 | case PACKET_ERROR: | |
5334 | case PACKET_UNKNOWN: | |
5335 | return -1; | |
5336 | case PACKET_OK: | |
5337 | return 0; | |
5338 | } | |
8e65ff28 | 5339 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5340 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
5341 | } |
5342 | ||
d471ea57 | 5343 | |
3c3bea1c | 5344 | static int |
fba45db2 | 5345 | remote_remove_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 5346 | { |
d01949b6 | 5347 | struct remote_state *rs = get_remote_state (); |
e514a9d6 | 5348 | char *p; |
d471ea57 AC |
5349 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
5350 | ||
444abaca | 5351 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
5cffb350 | 5352 | return -1; |
802188a7 | 5353 | |
6d820c5c DJ |
5354 | sprintf (rs->buf, "z%x,", packet); |
5355 | p = strchr (rs->buf, '\0'); | |
96baa820 JM |
5356 | addr = remote_address_masked (addr); |
5357 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 5358 | sprintf (p, ",%x", len); |
6d820c5c DJ |
5359 | putpkt (rs->buf); |
5360 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5361 | |
6d820c5c | 5362 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
5363 | { |
5364 | case PACKET_ERROR: | |
5365 | case PACKET_UNKNOWN: | |
5366 | return -1; | |
5367 | case PACKET_OK: | |
5368 | return 0; | |
5369 | } | |
8e65ff28 | 5370 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5371 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
5372 | } |
5373 | ||
3c3bea1c | 5374 | |
501eef12 AC |
5375 | int remote_hw_watchpoint_limit = -1; |
5376 | int remote_hw_breakpoint_limit = -1; | |
d471ea57 | 5377 | |
b9362cc7 | 5378 | static int |
3c3bea1c | 5379 | remote_check_watch_resources (int type, int cnt, int ot) |
96baa820 | 5380 | { |
3c3bea1c GS |
5381 | if (type == bp_hardware_breakpoint) |
5382 | { | |
5383 | if (remote_hw_breakpoint_limit == 0) | |
5384 | return 0; | |
501eef12 AC |
5385 | else if (remote_hw_breakpoint_limit < 0) |
5386 | return 1; | |
3c3bea1c GS |
5387 | else if (cnt <= remote_hw_breakpoint_limit) |
5388 | return 1; | |
5389 | } | |
5390 | else | |
5391 | { | |
5392 | if (remote_hw_watchpoint_limit == 0) | |
5393 | return 0; | |
501eef12 AC |
5394 | else if (remote_hw_watchpoint_limit < 0) |
5395 | return 1; | |
3c3bea1c GS |
5396 | else if (ot) |
5397 | return -1; | |
5398 | else if (cnt <= remote_hw_watchpoint_limit) | |
5399 | return 1; | |
5400 | } | |
5401 | return -1; | |
5402 | } | |
5403 | ||
b9362cc7 | 5404 | static int |
3c3bea1c GS |
5405 | remote_stopped_by_watchpoint (void) |
5406 | { | |
5407 | return remote_stopped_by_watchpoint_p; | |
5408 | } | |
5409 | ||
4aa7a7f5 JJ |
5410 | static int |
5411 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 5412 | { |
4aa7a7f5 | 5413 | int rc = 0; |
d983da9c | 5414 | if (remote_stopped_by_watchpoint ()) |
4aa7a7f5 JJ |
5415 | { |
5416 | *addr_p = remote_watch_data_address; | |
5417 | rc = 1; | |
5418 | } | |
5419 | ||
5420 | return rc; | |
3c3bea1c GS |
5421 | } |
5422 | ||
5423 | ||
5424 | static int | |
8181d85f | 5425 | remote_insert_hw_breakpoint (struct bp_target_info *bp_tgt) |
3c3bea1c | 5426 | { |
8181d85f | 5427 | CORE_ADDR addr; |
d01949b6 | 5428 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 5429 | char *p = rs->buf; |
802188a7 | 5430 | |
c8189ed1 | 5431 | /* The length field should be set to the size of a breakpoint |
8181d85f | 5432 | instruction, even though we aren't inserting one ourselves. */ |
c8189ed1 | 5433 | |
3b3b875c UW |
5434 | gdbarch_breakpoint_from_pc |
5435 | (current_gdbarch, &bp_tgt->placed_address, &bp_tgt->placed_size); | |
3c3bea1c | 5436 | |
444abaca | 5437 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 5438 | return -1; |
2bc416ba | 5439 | |
96baa820 JM |
5440 | *(p++) = 'Z'; |
5441 | *(p++) = '1'; | |
5442 | *(p++) = ','; | |
802188a7 | 5443 | |
8181d85f | 5444 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 5445 | p += hexnumstr (p, (ULONGEST) addr); |
8181d85f | 5446 | sprintf (p, ",%x", bp_tgt->placed_size); |
96baa820 | 5447 | |
6d820c5c DJ |
5448 | putpkt (rs->buf); |
5449 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5450 | |
6d820c5c | 5451 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
5452 | { |
5453 | case PACKET_ERROR: | |
5454 | case PACKET_UNKNOWN: | |
5455 | return -1; | |
5456 | case PACKET_OK: | |
5457 | return 0; | |
5458 | } | |
8e65ff28 | 5459 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5460 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
5461 | } |
5462 | ||
d471ea57 | 5463 | |
802188a7 | 5464 | static int |
8181d85f | 5465 | remote_remove_hw_breakpoint (struct bp_target_info *bp_tgt) |
96baa820 | 5466 | { |
8181d85f | 5467 | CORE_ADDR addr; |
d01949b6 | 5468 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 5469 | char *p = rs->buf; |
c8189ed1 | 5470 | |
444abaca | 5471 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 5472 | return -1; |
802188a7 | 5473 | |
96baa820 JM |
5474 | *(p++) = 'z'; |
5475 | *(p++) = '1'; | |
5476 | *(p++) = ','; | |
802188a7 | 5477 | |
8181d85f | 5478 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 5479 | p += hexnumstr (p, (ULONGEST) addr); |
8181d85f | 5480 | sprintf (p, ",%x", bp_tgt->placed_size); |
96baa820 | 5481 | |
6d820c5c DJ |
5482 | putpkt (rs->buf); |
5483 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 5484 | |
6d820c5c | 5485 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
5486 | { |
5487 | case PACKET_ERROR: | |
5488 | case PACKET_UNKNOWN: | |
5489 | return -1; | |
5490 | case PACKET_OK: | |
5491 | return 0; | |
5492 | } | |
8e65ff28 | 5493 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5494 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 5495 | } |
96baa820 | 5496 | |
c906108c SS |
5497 | /* Some targets are only capable of doing downloads, and afterwards |
5498 | they switch to the remote serial protocol. This function provides | |
5499 | a clean way to get from the download target to the remote target. | |
5500 | It's basically just a wrapper so that we don't have to expose any | |
5501 | of the internal workings of remote.c. | |
5502 | ||
5503 | Prior to calling this routine, you should shutdown the current | |
5504 | target code, else you will get the "A program is being debugged | |
5505 | already..." message. Usually a call to pop_target() suffices. */ | |
5506 | ||
5507 | void | |
fba45db2 | 5508 | push_remote_target (char *name, int from_tty) |
c906108c | 5509 | { |
a3f17187 | 5510 | printf_filtered (_("Switching to remote protocol\n")); |
c906108c SS |
5511 | remote_open (name, from_tty); |
5512 | } | |
5513 | ||
23860348 | 5514 | /* Table used by the crc32 function to calcuate the checksum. */ |
c906108c | 5515 | |
c5aa993b JM |
5516 | static unsigned long crc32_table[256] = |
5517 | {0, 0}; | |
c906108c SS |
5518 | |
5519 | static unsigned long | |
fba45db2 | 5520 | crc32 (unsigned char *buf, int len, unsigned int crc) |
c906108c | 5521 | { |
c5aa993b | 5522 | if (!crc32_table[1]) |
c906108c | 5523 | { |
23860348 | 5524 | /* Initialize the CRC table and the decoding table. */ |
c906108c SS |
5525 | int i, j; |
5526 | unsigned int c; | |
5527 | ||
5528 | for (i = 0; i < 256; i++) | |
c5aa993b JM |
5529 | { |
5530 | for (c = i << 24, j = 8; j > 0; --j) | |
5531 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
5532 | crc32_table[i] = c; | |
5533 | } | |
c906108c SS |
5534 | } |
5535 | ||
5536 | while (len--) | |
5537 | { | |
5538 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |
5539 | buf++; | |
5540 | } | |
5541 | return crc; | |
5542 | } | |
5543 | ||
5544 | /* compare-sections command | |
5545 | ||
5546 | With no arguments, compares each loadable section in the exec bfd | |
5547 | with the same memory range on the target, and reports mismatches. | |
5548 | Useful for verifying the image on the target against the exec file. | |
5549 | Depends on the target understanding the new "qCRC:" request. */ | |
5550 | ||
e514a9d6 JM |
5551 | /* FIXME: cagney/1999-10-26: This command should be broken down into a |
5552 | target method (target verify memory) and generic version of the | |
5553 | actual command. This will allow other high-level code (especially | |
23860348 | 5554 | generic_load()) to make use of this target functionality. */ |
e514a9d6 | 5555 | |
c906108c | 5556 | static void |
fba45db2 | 5557 | compare_sections_command (char *args, int from_tty) |
c906108c | 5558 | { |
d01949b6 | 5559 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
5560 | asection *s; |
5561 | unsigned long host_crc, target_crc; | |
5562 | extern bfd *exec_bfd; | |
5563 | struct cleanup *old_chain; | |
085dd6e6 JM |
5564 | char *tmp; |
5565 | char *sectdata; | |
ce359b09 | 5566 | const char *sectname; |
c906108c SS |
5567 | bfd_size_type size; |
5568 | bfd_vma lma; | |
5569 | int matched = 0; | |
5570 | int mismatched = 0; | |
5571 | ||
5572 | if (!exec_bfd) | |
8a3fe4f8 | 5573 | error (_("command cannot be used without an exec file")); |
c906108c SS |
5574 | if (!current_target.to_shortname || |
5575 | strcmp (current_target.to_shortname, "remote") != 0) | |
8a3fe4f8 | 5576 | error (_("command can only be used with remote target")); |
c906108c | 5577 | |
c5aa993b | 5578 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
5579 | { |
5580 | if (!(s->flags & SEC_LOAD)) | |
c5aa993b | 5581 | continue; /* skip non-loadable section */ |
c906108c | 5582 | |
2c500098 | 5583 | size = bfd_get_section_size (s); |
c906108c | 5584 | if (size == 0) |
c5aa993b | 5585 | continue; /* skip zero-length section */ |
c906108c | 5586 | |
ce359b09 | 5587 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 5588 | if (args && strcmp (args, sectname) != 0) |
c5aa993b | 5589 | continue; /* not the section selected by user */ |
c906108c | 5590 | |
c5aa993b | 5591 | matched = 1; /* do this section */ |
c906108c | 5592 | lma = s->lma; |
23860348 | 5593 | /* FIXME: assumes lma can fit into long. */ |
ea9c271d | 5594 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", |
ecbc58df | 5595 | (long) lma, (long) size); |
6d820c5c | 5596 | putpkt (rs->buf); |
c906108c | 5597 | |
23860348 MS |
5598 | /* Be clever; compute the host_crc before waiting for target |
5599 | reply. */ | |
c906108c | 5600 | sectdata = xmalloc (size); |
b8c9b27d | 5601 | old_chain = make_cleanup (xfree, sectdata); |
c906108c SS |
5602 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
5603 | host_crc = crc32 ((unsigned char *) sectdata, size, 0xffffffff); | |
5604 | ||
6d820c5c DJ |
5605 | getpkt (&rs->buf, &rs->buf_size, 0); |
5606 | if (rs->buf[0] == 'E') | |
8a3fe4f8 | 5607 | error (_("target memory fault, section %s, range 0x%s -- 0x%s"), |
823ca731 | 5608 | sectname, paddr (lma), paddr (lma + size)); |
6d820c5c | 5609 | if (rs->buf[0] != 'C') |
8a3fe4f8 | 5610 | error (_("remote target does not support this operation")); |
c906108c | 5611 | |
6d820c5c | 5612 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) |
c906108c SS |
5613 | target_crc = target_crc * 16 + fromhex (*tmp); |
5614 | ||
d4f3574e SS |
5615 | printf_filtered ("Section %s, range 0x%s -- 0x%s: ", |
5616 | sectname, paddr (lma), paddr (lma + size)); | |
c906108c SS |
5617 | if (host_crc == target_crc) |
5618 | printf_filtered ("matched.\n"); | |
5619 | else | |
c5aa993b JM |
5620 | { |
5621 | printf_filtered ("MIS-MATCHED!\n"); | |
5622 | mismatched++; | |
5623 | } | |
c906108c SS |
5624 | |
5625 | do_cleanups (old_chain); | |
5626 | } | |
5627 | if (mismatched > 0) | |
8a3fe4f8 AC |
5628 | warning (_("One or more sections of the remote executable does not match\n\ |
5629 | the loaded file\n")); | |
c906108c | 5630 | if (args && !matched) |
a3f17187 | 5631 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
5632 | } |
5633 | ||
0e7f50da UW |
5634 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
5635 | into remote target. The number of bytes written to the remote | |
5636 | target is returned, or -1 for error. */ | |
5637 | ||
5638 | static LONGEST | |
5639 | remote_write_qxfer (struct target_ops *ops, const char *object_name, | |
5640 | const char *annex, const gdb_byte *writebuf, | |
5641 | ULONGEST offset, LONGEST len, | |
5642 | struct packet_config *packet) | |
5643 | { | |
5644 | int i, buf_len; | |
5645 | ULONGEST n; | |
5646 | gdb_byte *wbuf; | |
5647 | struct remote_state *rs = get_remote_state (); | |
5648 | int max_size = get_memory_write_packet_size (); | |
5649 | ||
5650 | if (packet->support == PACKET_DISABLE) | |
5651 | return -1; | |
5652 | ||
5653 | /* Insert header. */ | |
5654 | i = snprintf (rs->buf, max_size, | |
5655 | "qXfer:%s:write:%s:%s:", | |
5656 | object_name, annex ? annex : "", | |
5657 | phex_nz (offset, sizeof offset)); | |
5658 | max_size -= (i + 1); | |
5659 | ||
5660 | /* Escape as much data as fits into rs->buf. */ | |
5661 | buf_len = remote_escape_output | |
5662 | (writebuf, len, (rs->buf + i), &max_size, max_size); | |
5663 | ||
5664 | if (putpkt_binary (rs->buf, i + buf_len) < 0 | |
5665 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
5666 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
5667 | return -1; | |
5668 | ||
5669 | unpack_varlen_hex (rs->buf, &n); | |
5670 | return n; | |
5671 | } | |
5672 | ||
0876f84a DJ |
5673 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
5674 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
5675 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
5676 | The number of bytes read may be less than LEN without indicating an | |
5677 | EOF. PACKET is checked and updated to indicate whether the remote | |
5678 | target supports this object. */ | |
5679 | ||
5680 | static LONGEST | |
5681 | remote_read_qxfer (struct target_ops *ops, const char *object_name, | |
5682 | const char *annex, | |
5683 | gdb_byte *readbuf, ULONGEST offset, LONGEST len, | |
5684 | struct packet_config *packet) | |
5685 | { | |
5686 | static char *finished_object; | |
5687 | static char *finished_annex; | |
5688 | static ULONGEST finished_offset; | |
5689 | ||
5690 | struct remote_state *rs = get_remote_state (); | |
5691 | unsigned int total = 0; | |
5692 | LONGEST i, n, packet_len; | |
5693 | ||
5694 | if (packet->support == PACKET_DISABLE) | |
5695 | return -1; | |
5696 | ||
5697 | /* Check whether we've cached an end-of-object packet that matches | |
5698 | this request. */ | |
5699 | if (finished_object) | |
5700 | { | |
5701 | if (strcmp (object_name, finished_object) == 0 | |
5702 | && strcmp (annex ? annex : "", finished_annex) == 0 | |
5703 | && offset == finished_offset) | |
5704 | return 0; | |
5705 | ||
5706 | /* Otherwise, we're now reading something different. Discard | |
5707 | the cache. */ | |
5708 | xfree (finished_object); | |
5709 | xfree (finished_annex); | |
5710 | finished_object = NULL; | |
5711 | finished_annex = NULL; | |
5712 | } | |
5713 | ||
5714 | /* Request only enough to fit in a single packet. The actual data | |
5715 | may not, since we don't know how much of it will need to be escaped; | |
5716 | the target is free to respond with slightly less data. We subtract | |
5717 | five to account for the response type and the protocol frame. */ | |
5718 | n = min (get_remote_packet_size () - 5, len); | |
5719 | snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s", | |
5720 | object_name, annex ? annex : "", | |
5721 | phex_nz (offset, sizeof offset), | |
5722 | phex_nz (n, sizeof n)); | |
5723 | i = putpkt (rs->buf); | |
5724 | if (i < 0) | |
5725 | return -1; | |
5726 | ||
5727 | rs->buf[0] = '\0'; | |
5728 | packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
5729 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) | |
5730 | return -1; | |
5731 | ||
5732 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
5733 | error (_("Unknown remote qXfer reply: %s"), rs->buf); | |
5734 | ||
5735 | /* 'm' means there is (or at least might be) more data after this | |
5736 | batch. That does not make sense unless there's at least one byte | |
5737 | of data in this reply. */ | |
5738 | if (rs->buf[0] == 'm' && packet_len == 1) | |
5739 | error (_("Remote qXfer reply contained no data.")); | |
5740 | ||
5741 | /* Got some data. */ | |
5742 | i = remote_unescape_input (rs->buf + 1, packet_len - 1, readbuf, n); | |
5743 | ||
5744 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
5745 | or possibly empty. If we have the final block of a non-empty |
5746 | object, record this fact to bypass a subsequent partial read. */ | |
5747 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a DJ |
5748 | { |
5749 | finished_object = xstrdup (object_name); | |
5750 | finished_annex = xstrdup (annex ? annex : ""); | |
5751 | finished_offset = offset + i; | |
5752 | } | |
5753 | ||
5754 | return i; | |
5755 | } | |
5756 | ||
1e3ff5ad | 5757 | static LONGEST |
4b8a223f | 5758 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
961cb7b5 MK |
5759 | const char *annex, gdb_byte *readbuf, |
5760 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
c906108c | 5761 | { |
d01949b6 | 5762 | struct remote_state *rs = get_remote_state (); |
c906108c | 5763 | int i; |
6d820c5c | 5764 | char *p2; |
1e3ff5ad | 5765 | char query_type; |
c906108c | 5766 | |
b2182ed2 | 5767 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
5768 | if (object == TARGET_OBJECT_MEMORY) |
5769 | { | |
5770 | int xfered; | |
5771 | errno = 0; | |
5772 | ||
5773 | if (writebuf != NULL) | |
b2182ed2 | 5774 | xfered = remote_write_bytes (offset, writebuf, len); |
21e3b9b9 | 5775 | else |
b2182ed2 | 5776 | xfered = remote_read_bytes (offset, readbuf, len); |
21e3b9b9 DJ |
5777 | |
5778 | if (xfered > 0) | |
5779 | return xfered; | |
5780 | else if (xfered == 0 && errno == 0) | |
5781 | return 0; | |
5782 | else | |
5783 | return -1; | |
5784 | } | |
5785 | ||
0e7f50da UW |
5786 | /* Handle SPU memory using qxfer packets. */ |
5787 | if (object == TARGET_OBJECT_SPU) | |
5788 | { | |
5789 | if (readbuf) | |
5790 | return remote_read_qxfer (ops, "spu", annex, readbuf, offset, len, | |
5791 | &remote_protocol_packets | |
5792 | [PACKET_qXfer_spu_read]); | |
5793 | else | |
5794 | return remote_write_qxfer (ops, "spu", annex, writebuf, offset, len, | |
5795 | &remote_protocol_packets | |
5796 | [PACKET_qXfer_spu_write]); | |
5797 | } | |
5798 | ||
a76d924d DJ |
5799 | /* Only handle flash writes. */ |
5800 | if (writebuf != NULL) | |
5801 | { | |
5802 | LONGEST xfered; | |
5803 | ||
5804 | switch (object) | |
5805 | { | |
5806 | case TARGET_OBJECT_FLASH: | |
5807 | xfered = remote_flash_write (ops, offset, len, writebuf); | |
5808 | ||
5809 | if (xfered > 0) | |
5810 | return xfered; | |
5811 | else if (xfered == 0 && errno == 0) | |
5812 | return 0; | |
5813 | else | |
5814 | return -1; | |
5815 | ||
5816 | default: | |
5817 | return -1; | |
5818 | } | |
5819 | } | |
4b8a223f | 5820 | |
1e3ff5ad AC |
5821 | /* Map pre-existing objects onto letters. DO NOT do this for new |
5822 | objects!!! Instead specify new query packets. */ | |
5823 | switch (object) | |
c906108c | 5824 | { |
1e3ff5ad AC |
5825 | case TARGET_OBJECT_AVR: |
5826 | query_type = 'R'; | |
5827 | break; | |
802188a7 RM |
5828 | |
5829 | case TARGET_OBJECT_AUXV: | |
0876f84a DJ |
5830 | gdb_assert (annex == NULL); |
5831 | return remote_read_qxfer (ops, "auxv", annex, readbuf, offset, len, | |
5832 | &remote_protocol_packets[PACKET_qXfer_auxv]); | |
802188a7 | 5833 | |
23181151 DJ |
5834 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
5835 | return remote_read_qxfer | |
5836 | (ops, "features", annex, readbuf, offset, len, | |
5837 | &remote_protocol_packets[PACKET_qXfer_features]); | |
5838 | ||
cfa9d6d9 DJ |
5839 | case TARGET_OBJECT_LIBRARIES: |
5840 | return remote_read_qxfer | |
5841 | (ops, "libraries", annex, readbuf, offset, len, | |
5842 | &remote_protocol_packets[PACKET_qXfer_libraries]); | |
5843 | ||
fd79ecee DJ |
5844 | case TARGET_OBJECT_MEMORY_MAP: |
5845 | gdb_assert (annex == NULL); | |
5846 | return remote_read_qxfer (ops, "memory-map", annex, readbuf, offset, len, | |
5847 | &remote_protocol_packets[PACKET_qXfer_memory_map]); | |
5848 | ||
1e3ff5ad | 5849 | default: |
c906108c SS |
5850 | return -1; |
5851 | } | |
5852 | ||
4b8a223f | 5853 | /* Note: a zero OFFSET and LEN can be used to query the minimum |
1e3ff5ad | 5854 | buffer size. */ |
4b8a223f | 5855 | if (offset == 0 && len == 0) |
ea9c271d DJ |
5856 | return (get_remote_packet_size ()); |
5857 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not | |
24b06219 | 5858 | large enough let the caller deal with it. */ |
ea9c271d | 5859 | if (len < get_remote_packet_size ()) |
1e3ff5ad | 5860 | return -1; |
ea9c271d | 5861 | len = get_remote_packet_size (); |
1e3ff5ad | 5862 | |
23860348 | 5863 | /* Except for querying the minimum buffer size, target must be open. */ |
c5aa993b | 5864 | if (!remote_desc) |
8a3fe4f8 | 5865 | error (_("remote query is only available after target open")); |
c906108c | 5866 | |
1e3ff5ad | 5867 | gdb_assert (annex != NULL); |
4b8a223f | 5868 | gdb_assert (readbuf != NULL); |
c906108c | 5869 | |
6d820c5c | 5870 | p2 = rs->buf; |
c906108c SS |
5871 | *p2++ = 'q'; |
5872 | *p2++ = query_type; | |
5873 | ||
23860348 MS |
5874 | /* We used one buffer char for the remote protocol q command and |
5875 | another for the query type. As the remote protocol encapsulation | |
5876 | uses 4 chars plus one extra in case we are debugging | |
5877 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
5878 | string. */ | |
c906108c | 5879 | i = 0; |
ea9c271d | 5880 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 5881 | { |
1e3ff5ad AC |
5882 | /* Bad caller may have sent forbidden characters. */ |
5883 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
5884 | *p2++ = annex[i]; | |
c906108c SS |
5885 | i++; |
5886 | } | |
1e3ff5ad AC |
5887 | *p2 = '\0'; |
5888 | gdb_assert (annex[i] == '\0'); | |
c906108c | 5889 | |
6d820c5c | 5890 | i = putpkt (rs->buf); |
c5aa993b JM |
5891 | if (i < 0) |
5892 | return i; | |
c906108c | 5893 | |
6d820c5c DJ |
5894 | getpkt (&rs->buf, &rs->buf_size, 0); |
5895 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 5896 | |
cfd77fa1 | 5897 | return strlen ((char *) readbuf); |
c906108c SS |
5898 | } |
5899 | ||
96baa820 JM |
5900 | static void |
5901 | remote_rcmd (char *command, | |
d9fcf2fb | 5902 | struct ui_file *outbuf) |
96baa820 | 5903 | { |
d01949b6 | 5904 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 5905 | char *p = rs->buf; |
96baa820 JM |
5906 | |
5907 | if (!remote_desc) | |
8a3fe4f8 | 5908 | error (_("remote rcmd is only available after target open")); |
96baa820 | 5909 | |
23860348 | 5910 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
5911 | if (command == NULL) |
5912 | command = ""; | |
5913 | ||
23860348 | 5914 | /* The query prefix. */ |
2e9f7625 DJ |
5915 | strcpy (rs->buf, "qRcmd,"); |
5916 | p = strchr (rs->buf, '\0'); | |
96baa820 | 5917 | |
2e9f7625 | 5918 | if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/) > get_remote_packet_size ()) |
8a3fe4f8 | 5919 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 5920 | |
23860348 | 5921 | /* Encode the actual command. */ |
cfd77fa1 | 5922 | bin2hex ((gdb_byte *) command, p, 0); |
96baa820 | 5923 | |
6d820c5c | 5924 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 5925 | error (_("Communication problem with target.")); |
96baa820 JM |
5926 | |
5927 | /* get/display the response */ | |
5928 | while (1) | |
5929 | { | |
2e9f7625 DJ |
5930 | char *buf; |
5931 | ||
23860348 | 5932 | /* XXX - see also tracepoint.c:remote_get_noisy_reply(). */ |
2e9f7625 | 5933 | rs->buf[0] = '\0'; |
6d820c5c | 5934 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 5935 | buf = rs->buf; |
96baa820 | 5936 | if (buf[0] == '\0') |
8a3fe4f8 | 5937 | error (_("Target does not support this command.")); |
96baa820 JM |
5938 | if (buf[0] == 'O' && buf[1] != 'K') |
5939 | { | |
23860348 | 5940 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
5941 | continue; |
5942 | } | |
5943 | if (strcmp (buf, "OK") == 0) | |
5944 | break; | |
7be570e7 JM |
5945 | if (strlen (buf) == 3 && buf[0] == 'E' |
5946 | && isdigit (buf[1]) && isdigit (buf[2])) | |
5947 | { | |
8a3fe4f8 | 5948 | error (_("Protocol error with Rcmd")); |
7be570e7 | 5949 | } |
96baa820 JM |
5950 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
5951 | { | |
5952 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
5953 | fputc_unfiltered (c, outbuf); | |
5954 | } | |
5955 | break; | |
5956 | } | |
5957 | } | |
5958 | ||
fd79ecee DJ |
5959 | static VEC(mem_region_s) * |
5960 | remote_memory_map (struct target_ops *ops) | |
5961 | { | |
5962 | VEC(mem_region_s) *result = NULL; | |
5963 | char *text = target_read_stralloc (¤t_target, | |
5964 | TARGET_OBJECT_MEMORY_MAP, NULL); | |
5965 | ||
5966 | if (text) | |
5967 | { | |
5968 | struct cleanup *back_to = make_cleanup (xfree, text); | |
5969 | result = parse_memory_map (text); | |
5970 | do_cleanups (back_to); | |
5971 | } | |
5972 | ||
5973 | return result; | |
5974 | } | |
5975 | ||
c906108c | 5976 | static void |
fba45db2 | 5977 | packet_command (char *args, int from_tty) |
c906108c | 5978 | { |
d01949b6 | 5979 | struct remote_state *rs = get_remote_state (); |
c906108c | 5980 | |
c5aa993b | 5981 | if (!remote_desc) |
8a3fe4f8 | 5982 | error (_("command can only be used with remote target")); |
c906108c | 5983 | |
c5aa993b | 5984 | if (!args) |
8a3fe4f8 | 5985 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
5986 | |
5987 | puts_filtered ("sending: "); | |
5988 | print_packet (args); | |
5989 | puts_filtered ("\n"); | |
5990 | putpkt (args); | |
5991 | ||
6d820c5c | 5992 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 5993 | puts_filtered ("received: "); |
6d820c5c | 5994 | print_packet (rs->buf); |
c906108c SS |
5995 | puts_filtered ("\n"); |
5996 | } | |
5997 | ||
5998 | #if 0 | |
23860348 | 5999 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 6000 | |
a14ed312 | 6001 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 6002 | |
a14ed312 | 6003 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 6004 | |
a14ed312 | 6005 | static void threadalive_test (char *cmd, int tty); |
c906108c | 6006 | |
a14ed312 | 6007 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 6008 | |
23860348 | 6009 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 6010 | |
a14ed312 | 6011 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 6012 | |
23860348 | 6013 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 6014 | |
a14ed312 | 6015 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 6016 | |
a14ed312 | 6017 | static void init_remote_threadtests (void); |
c906108c | 6018 | |
23860348 | 6019 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
6020 | |
6021 | static void | |
fba45db2 | 6022 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
6023 | { |
6024 | int sample_thread = SAMPLE_THREAD; | |
6025 | ||
a3f17187 | 6026 | printf_filtered (_("Remote threadset test\n")); |
c906108c SS |
6027 | set_thread (sample_thread, 1); |
6028 | } | |
6029 | ||
6030 | ||
6031 | static void | |
fba45db2 | 6032 | threadalive_test (char *cmd, int tty) |
c906108c SS |
6033 | { |
6034 | int sample_thread = SAMPLE_THREAD; | |
6035 | ||
39f77062 | 6036 | if (remote_thread_alive (pid_to_ptid (sample_thread))) |
c906108c SS |
6037 | printf_filtered ("PASS: Thread alive test\n"); |
6038 | else | |
6039 | printf_filtered ("FAIL: Thread alive test\n"); | |
6040 | } | |
6041 | ||
23860348 | 6042 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
6043 | |
6044 | void | |
fba45db2 | 6045 | output_threadid (char *title, threadref *ref) |
c906108c SS |
6046 | { |
6047 | char hexid[20]; | |
6048 | ||
23860348 | 6049 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
6050 | hexid[16] = 0; |
6051 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
6052 | } | |
6053 | ||
6054 | static void | |
fba45db2 | 6055 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
6056 | { |
6057 | int startflag = 1; | |
6058 | threadref nextthread; | |
6059 | int done, result_count; | |
6060 | threadref threadlist[3]; | |
6061 | ||
6062 | printf_filtered ("Remote Threadlist test\n"); | |
6063 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
6064 | &result_count, &threadlist[0])) | |
6065 | printf_filtered ("FAIL: threadlist test\n"); | |
6066 | else | |
6067 | { | |
6068 | threadref *scan = threadlist; | |
6069 | threadref *limit = scan + result_count; | |
6070 | ||
6071 | while (scan < limit) | |
6072 | output_threadid (" thread ", scan++); | |
6073 | } | |
6074 | } | |
6075 | ||
6076 | void | |
fba45db2 | 6077 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
6078 | { |
6079 | output_threadid ("Threadid: ", &info->threadid); | |
6080 | printf_filtered ("Name: %s\n ", info->shortname); | |
6081 | printf_filtered ("State: %s\n", info->display); | |
6082 | printf_filtered ("other: %s\n\n", info->more_display); | |
6083 | } | |
6084 | ||
6085 | int | |
fba45db2 | 6086 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
6087 | { |
6088 | int result; | |
6089 | int set; | |
6090 | struct gdb_ext_thread_info threadinfo; | |
6091 | ||
6092 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
6093 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
6094 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
6095 | display_thread_info (&threadinfo); | |
6096 | return result; | |
6097 | } | |
6098 | ||
6099 | static void | |
fba45db2 | 6100 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
6101 | { |
6102 | int athread = SAMPLE_THREAD; | |
6103 | threadref thread; | |
6104 | int set; | |
6105 | ||
6106 | int_to_threadref (&thread, athread); | |
6107 | printf_filtered ("Remote Threadinfo test\n"); | |
6108 | if (!get_and_display_threadinfo (&thread)) | |
6109 | printf_filtered ("FAIL cannot get thread info\n"); | |
6110 | } | |
6111 | ||
6112 | static int | |
fba45db2 | 6113 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
6114 | { |
6115 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
6116 | return get_and_display_threadinfo (ref); | |
6117 | } | |
6118 | ||
6119 | static void | |
fba45db2 | 6120 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
6121 | { |
6122 | printf_filtered ("Remote Threadlist update test\n"); | |
6123 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
6124 | } | |
6125 | ||
6126 | static void | |
6127 | init_remote_threadtests (void) | |
6128 | { | |
1bedd215 AC |
6129 | add_com ("tlist", class_obscure, threadlist_test_cmd, _("\ |
6130 | Fetch and print the remote list of thread identifiers, one pkt only")); | |
c906108c | 6131 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 6132 | _("Fetch and display info about one thread")); |
c906108c | 6133 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 6134 | _("Test setting to a different thread")); |
c906108c | 6135 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 6136 | _("Iterate through updating all remote thread info")); |
c906108c | 6137 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 6138 | _(" Remote thread alive test ")); |
c906108c SS |
6139 | } |
6140 | ||
6141 | #endif /* 0 */ | |
6142 | ||
f3fb8c85 MS |
6143 | /* Convert a thread ID to a string. Returns the string in a static |
6144 | buffer. */ | |
6145 | ||
6146 | static char * | |
39f77062 | 6147 | remote_pid_to_str (ptid_t ptid) |
f3fb8c85 | 6148 | { |
fd0a2a6f | 6149 | static char buf[32]; |
f3fb8c85 | 6150 | |
32a5b2f1 | 6151 | xsnprintf (buf, sizeof buf, "Thread %d", ptid_get_pid (ptid)); |
f3fb8c85 MS |
6152 | return buf; |
6153 | } | |
6154 | ||
38691318 KB |
6155 | /* Get the address of the thread local variable in OBJFILE which is |
6156 | stored at OFFSET within the thread local storage for thread PTID. */ | |
6157 | ||
6158 | static CORE_ADDR | |
6159 | remote_get_thread_local_address (ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
6160 | { | |
444abaca | 6161 | if (remote_protocol_packets[PACKET_qGetTLSAddr].support != PACKET_DISABLE) |
38691318 KB |
6162 | { |
6163 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 6164 | char *p = rs->buf; |
571dd617 | 6165 | enum packet_result result; |
38691318 KB |
6166 | |
6167 | strcpy (p, "qGetTLSAddr:"); | |
6168 | p += strlen (p); | |
6169 | p += hexnumstr (p, PIDGET (ptid)); | |
6170 | *p++ = ','; | |
6171 | p += hexnumstr (p, offset); | |
6172 | *p++ = ','; | |
6173 | p += hexnumstr (p, lm); | |
6174 | *p++ = '\0'; | |
6175 | ||
6d820c5c DJ |
6176 | putpkt (rs->buf); |
6177 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6178 | result = packet_ok (rs->buf, &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 6179 | if (result == PACKET_OK) |
38691318 KB |
6180 | { |
6181 | ULONGEST result; | |
6182 | ||
6d820c5c | 6183 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
6184 | return result; |
6185 | } | |
571dd617 | 6186 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
6187 | throw_error (TLS_GENERIC_ERROR, |
6188 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 6189 | else |
109c3e39 AC |
6190 | throw_error (TLS_GENERIC_ERROR, |
6191 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
6192 | } |
6193 | else | |
109c3e39 AC |
6194 | throw_error (TLS_GENERIC_ERROR, |
6195 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
6196 | /* Not reached. */ |
6197 | return 0; | |
6198 | } | |
6199 | ||
29709017 DJ |
6200 | /* Support for inferring a target description based on the current |
6201 | architecture and the size of a 'g' packet. While the 'g' packet | |
6202 | can have any size (since optional registers can be left off the | |
6203 | end), some sizes are easily recognizable given knowledge of the | |
6204 | approximate architecture. */ | |
6205 | ||
6206 | struct remote_g_packet_guess | |
6207 | { | |
6208 | int bytes; | |
6209 | const struct target_desc *tdesc; | |
6210 | }; | |
6211 | typedef struct remote_g_packet_guess remote_g_packet_guess_s; | |
6212 | DEF_VEC_O(remote_g_packet_guess_s); | |
6213 | ||
6214 | struct remote_g_packet_data | |
6215 | { | |
6216 | VEC(remote_g_packet_guess_s) *guesses; | |
6217 | }; | |
6218 | ||
6219 | static struct gdbarch_data *remote_g_packet_data_handle; | |
6220 | ||
6221 | static void * | |
6222 | remote_g_packet_data_init (struct obstack *obstack) | |
6223 | { | |
6224 | return OBSTACK_ZALLOC (obstack, struct remote_g_packet_data); | |
6225 | } | |
6226 | ||
6227 | void | |
6228 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
6229 | const struct target_desc *tdesc) | |
6230 | { | |
6231 | struct remote_g_packet_data *data | |
6232 | = gdbarch_data (gdbarch, remote_g_packet_data_handle); | |
6233 | struct remote_g_packet_guess new_guess, *guess; | |
6234 | int ix; | |
6235 | ||
6236 | gdb_assert (tdesc != NULL); | |
6237 | ||
6238 | for (ix = 0; | |
6239 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
6240 | ix++) | |
6241 | if (guess->bytes == bytes) | |
6242 | internal_error (__FILE__, __LINE__, | |
6243 | "Duplicate g packet description added for size %d", | |
6244 | bytes); | |
6245 | ||
6246 | new_guess.bytes = bytes; | |
6247 | new_guess.tdesc = tdesc; | |
6248 | VEC_safe_push (remote_g_packet_guess_s, data->guesses, &new_guess); | |
6249 | } | |
6250 | ||
6251 | static const struct target_desc * | |
6252 | remote_read_description (struct target_ops *target) | |
6253 | { | |
6254 | struct remote_g_packet_data *data | |
6255 | = gdbarch_data (current_gdbarch, remote_g_packet_data_handle); | |
6256 | ||
6257 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) | |
6258 | { | |
6259 | struct remote_g_packet_guess *guess; | |
6260 | int ix; | |
6261 | int bytes = send_g_packet (); | |
6262 | ||
6263 | for (ix = 0; | |
6264 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
6265 | ix++) | |
6266 | if (guess->bytes == bytes) | |
6267 | return guess->tdesc; | |
6268 | ||
6269 | /* We discard the g packet. A minor optimization would be to | |
6270 | hold on to it, and fill the register cache once we have selected | |
6271 | an architecture, but it's too tricky to do safely. */ | |
6272 | } | |
6273 | ||
6274 | return NULL; | |
6275 | } | |
6276 | ||
c906108c | 6277 | static void |
fba45db2 | 6278 | init_remote_ops (void) |
c906108c | 6279 | { |
c5aa993b | 6280 | remote_ops.to_shortname = "remote"; |
c906108c | 6281 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 6282 | remote_ops.to_doc = |
c906108c | 6283 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
6284 | Specify the serial device it is connected to\n\ |
6285 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
6286 | remote_ops.to_open = remote_open; |
6287 | remote_ops.to_close = remote_close; | |
c906108c | 6288 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 6289 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 6290 | remote_ops.to_resume = remote_resume; |
c906108c SS |
6291 | remote_ops.to_wait = remote_wait; |
6292 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
6293 | remote_ops.to_store_registers = remote_store_registers; | |
6294 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 6295 | remote_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 6296 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
6297 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
6298 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
6299 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
6300 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
6301 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; | |
6302 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
6303 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
6304 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
6305 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b JM |
6306 | remote_ops.to_kill = remote_kill; |
6307 | remote_ops.to_load = generic_load; | |
c906108c SS |
6308 | remote_ops.to_mourn_inferior = remote_mourn; |
6309 | remote_ops.to_thread_alive = remote_thread_alive; | |
0f71a2f6 | 6310 | remote_ops.to_find_new_threads = remote_threads_info; |
0caabb7e | 6311 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 6312 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
c906108c | 6313 | remote_ops.to_stop = remote_stop; |
4b8a223f | 6314 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 6315 | remote_ops.to_rcmd = remote_rcmd; |
38691318 | 6316 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; |
c906108c | 6317 | remote_ops.to_stratum = process_stratum; |
c5aa993b JM |
6318 | remote_ops.to_has_all_memory = 1; |
6319 | remote_ops.to_has_memory = 1; | |
6320 | remote_ops.to_has_stack = 1; | |
6321 | remote_ops.to_has_registers = 1; | |
6322 | remote_ops.to_has_execution = 1; | |
6323 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
6324 | remote_ops.to_magic = OPS_MAGIC; | |
fd79ecee | 6325 | remote_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
6326 | remote_ops.to_flash_erase = remote_flash_erase; |
6327 | remote_ops.to_flash_done = remote_flash_done; | |
29709017 | 6328 | remote_ops.to_read_description = remote_read_description; |
c906108c SS |
6329 | } |
6330 | ||
6331 | /* Set up the extended remote vector by making a copy of the standard | |
6332 | remote vector and adding to it. */ | |
6333 | ||
6334 | static void | |
fba45db2 | 6335 | init_extended_remote_ops (void) |
c906108c SS |
6336 | { |
6337 | extended_remote_ops = remote_ops; | |
6338 | ||
0f71a2f6 | 6339 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 6340 | extended_remote_ops.to_longname = |
c906108c | 6341 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 6342 | extended_remote_ops.to_doc = |
c906108c SS |
6343 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
6344 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 6345 | extended_remote_ops.to_open = extended_remote_open; |
c906108c SS |
6346 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
6347 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
0f71a2f6 JM |
6348 | } |
6349 | ||
6426a772 JM |
6350 | static int |
6351 | remote_can_async_p (void) | |
6352 | { | |
23860348 | 6353 | /* We're async whenever the serial device is. */ |
2cd58942 | 6354 | return (current_target.to_async_mask_value) && serial_can_async_p (remote_desc); |
6426a772 JM |
6355 | } |
6356 | ||
6357 | static int | |
6358 | remote_is_async_p (void) | |
6359 | { | |
23860348 | 6360 | /* We're async whenever the serial device is. */ |
2cd58942 | 6361 | return (current_target.to_async_mask_value) && serial_is_async_p (remote_desc); |
6426a772 JM |
6362 | } |
6363 | ||
2acceee2 JM |
6364 | /* Pass the SERIAL event on and up to the client. One day this code |
6365 | will be able to delay notifying the client of an event until the | |
23860348 | 6366 | point where an entire packet has been received. */ |
2acceee2 | 6367 | |
2bc416ba | 6368 | static void (*async_client_callback) (enum inferior_event_type event_type, |
23860348 | 6369 | void *context); |
2acceee2 JM |
6370 | static void *async_client_context; |
6371 | static serial_event_ftype remote_async_serial_handler; | |
6372 | ||
6426a772 | 6373 | static void |
819cc324 | 6374 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 6375 | { |
2acceee2 JM |
6376 | /* Don't propogate error information up to the client. Instead let |
6377 | the client find out about the error by querying the target. */ | |
6378 | async_client_callback (INF_REG_EVENT, async_client_context); | |
6379 | } | |
6380 | ||
6381 | static void | |
2bc416ba | 6382 | remote_async (void (*callback) (enum inferior_event_type event_type, |
23860348 | 6383 | void *context), void *context) |
2acceee2 | 6384 | { |
ed9a39eb | 6385 | if (current_target.to_async_mask_value == 0) |
8e65ff28 | 6386 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 6387 | _("Calling remote_async when async is masked")); |
ed9a39eb | 6388 | |
2acceee2 JM |
6389 | if (callback != NULL) |
6390 | { | |
2cd58942 | 6391 | serial_async (remote_desc, remote_async_serial_handler, NULL); |
2acceee2 JM |
6392 | async_client_callback = callback; |
6393 | async_client_context = context; | |
6394 | } | |
6395 | else | |
2cd58942 | 6396 | serial_async (remote_desc, NULL, NULL); |
6426a772 JM |
6397 | } |
6398 | ||
43ff13b4 JM |
6399 | /* Target async and target extended-async. |
6400 | ||
6401 | This are temporary targets, until it is all tested. Eventually | |
6402 | async support will be incorporated int the usual 'remote' | |
23860348 | 6403 | target. */ |
43ff13b4 JM |
6404 | |
6405 | static void | |
c2d11a7d | 6406 | init_remote_async_ops (void) |
43ff13b4 JM |
6407 | { |
6408 | remote_async_ops.to_shortname = "async"; | |
2bc416ba | 6409 | remote_async_ops.to_longname = |
23860348 | 6410 | "Remote serial target in async version of the gdb-specific protocol"; |
c5aa993b | 6411 | remote_async_ops.to_doc = |
43ff13b4 JM |
6412 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
6413 | Specify the serial device it is connected to (e.g. /dev/ttya)."; | |
c5aa993b JM |
6414 | remote_async_ops.to_open = remote_async_open; |
6415 | remote_async_ops.to_close = remote_close; | |
6ad8ae5c DJ |
6416 | remote_async_ops.to_detach = remote_detach; |
6417 | remote_async_ops.to_disconnect = remote_disconnect; | |
c5aa993b JM |
6418 | remote_async_ops.to_resume = remote_async_resume; |
6419 | remote_async_ops.to_wait = remote_async_wait; | |
6420 | remote_async_ops.to_fetch_registers = remote_fetch_registers; | |
6421 | remote_async_ops.to_store_registers = remote_store_registers; | |
6422 | remote_async_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 6423 | remote_async_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 6424 | remote_async_ops.to_files_info = remote_files_info; |
43ff13b4 JM |
6425 | remote_async_ops.to_insert_breakpoint = remote_insert_breakpoint; |
6426 | remote_async_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
6427 | remote_async_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
6428 | remote_async_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
6429 | remote_async_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
6430 | remote_async_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
6431 | remote_async_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
6432 | remote_async_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; | |
6433 | remote_async_ops.to_stopped_data_address = remote_stopped_data_address; | |
6426a772 JM |
6434 | remote_async_ops.to_terminal_inferior = remote_async_terminal_inferior; |
6435 | remote_async_ops.to_terminal_ours = remote_async_terminal_ours; | |
c5aa993b JM |
6436 | remote_async_ops.to_kill = remote_async_kill; |
6437 | remote_async_ops.to_load = generic_load; | |
53a5351d | 6438 | remote_async_ops.to_mourn_inferior = remote_async_mourn; |
c5aa993b JM |
6439 | remote_async_ops.to_thread_alive = remote_thread_alive; |
6440 | remote_async_ops.to_find_new_threads = remote_threads_info; | |
cf759d3b ND |
6441 | remote_async_ops.to_pid_to_str = remote_pid_to_str; |
6442 | remote_async_ops.to_extra_thread_info = remote_threads_extra_info; | |
43ff13b4 | 6443 | remote_async_ops.to_stop = remote_stop; |
4b8a223f | 6444 | remote_async_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 6445 | remote_async_ops.to_rcmd = remote_rcmd; |
c5aa993b JM |
6446 | remote_async_ops.to_stratum = process_stratum; |
6447 | remote_async_ops.to_has_all_memory = 1; | |
6448 | remote_async_ops.to_has_memory = 1; | |
6449 | remote_async_ops.to_has_stack = 1; | |
6450 | remote_async_ops.to_has_registers = 1; | |
6451 | remote_async_ops.to_has_execution = 1; | |
6452 | remote_async_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
6426a772 JM |
6453 | remote_async_ops.to_can_async_p = remote_can_async_p; |
6454 | remote_async_ops.to_is_async_p = remote_is_async_p; | |
6455 | remote_async_ops.to_async = remote_async; | |
ed9a39eb | 6456 | remote_async_ops.to_async_mask_value = 1; |
c5aa993b | 6457 | remote_async_ops.to_magic = OPS_MAGIC; |
fd79ecee | 6458 | remote_async_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
6459 | remote_async_ops.to_flash_erase = remote_flash_erase; |
6460 | remote_async_ops.to_flash_done = remote_flash_done; | |
cfa9d6d9 | 6461 | remote_async_ops.to_read_description = remote_read_description; |
43ff13b4 JM |
6462 | } |
6463 | ||
6464 | /* Set up the async extended remote vector by making a copy of the standard | |
6465 | remote vector and adding to it. */ | |
6466 | ||
6467 | static void | |
c2d11a7d | 6468 | init_extended_async_remote_ops (void) |
43ff13b4 JM |
6469 | { |
6470 | extended_async_remote_ops = remote_async_ops; | |
6471 | ||
6472 | extended_async_remote_ops.to_shortname = "extended-async"; | |
c5aa993b | 6473 | extended_async_remote_ops.to_longname = |
43ff13b4 | 6474 | "Extended remote serial target in async gdb-specific protocol"; |
c5aa993b | 6475 | extended_async_remote_ops.to_doc = |
43ff13b4 JM |
6476 | "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\ |
6477 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 6478 | extended_async_remote_ops.to_open = extended_remote_async_open; |
43ff13b4 JM |
6479 | extended_async_remote_ops.to_create_inferior = extended_remote_async_create_inferior; |
6480 | extended_async_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
6481 | } | |
6482 | ||
5a2468f5 | 6483 | static void |
c2d11a7d | 6484 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 6485 | { |
427c3a89 | 6486 | help_list (remote_set_cmdlist, "set remote ", -1, gdb_stdout); |
5a2468f5 JM |
6487 | } |
6488 | ||
d471ea57 AC |
6489 | static void |
6490 | show_remote_cmd (char *args, int from_tty) | |
6491 | { | |
37a105a1 | 6492 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 6493 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 DJ |
6494 | struct cleanup *showlist_chain; |
6495 | struct cmd_list_element *list = remote_show_cmdlist; | |
6496 | ||
6497 | showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist"); | |
6498 | for (; list != NULL; list = list->next) | |
6499 | if (strcmp (list->name, "Z-packet") == 0) | |
6500 | continue; | |
427c3a89 DJ |
6501 | else if (list->type == not_set_cmd) |
6502 | /* Alias commands are exactly like the original, except they | |
6503 | don't have the normal type. */ | |
6504 | continue; | |
6505 | else | |
37a105a1 DJ |
6506 | { |
6507 | struct cleanup *option_chain | |
6508 | = make_cleanup_ui_out_tuple_begin_end (uiout, "option"); | |
6509 | ui_out_field_string (uiout, "name", list->name); | |
6510 | ui_out_text (uiout, ": "); | |
427c3a89 DJ |
6511 | if (list->type == show_cmd) |
6512 | do_setshow_command ((char *) NULL, from_tty, list); | |
6513 | else | |
6514 | cmd_func (list, NULL, from_tty); | |
37a105a1 DJ |
6515 | /* Close the tuple. */ |
6516 | do_cleanups (option_chain); | |
6517 | } | |
427c3a89 DJ |
6518 | |
6519 | /* Close the tuple. */ | |
6520 | do_cleanups (showlist_chain); | |
d471ea57 | 6521 | } |
5a2468f5 | 6522 | |
0f71a2f6 | 6523 | |
23860348 | 6524 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
6525 | static void |
6526 | remote_new_objfile (struct objfile *objfile) | |
6527 | { | |
23860348 | 6528 | if (remote_desc != 0) /* Have a remote connection. */ |
06d3b283 | 6529 | remote_check_symbols (objfile); |
dc8acb97 MS |
6530 | } |
6531 | ||
c906108c | 6532 | void |
fba45db2 | 6533 | _initialize_remote (void) |
c906108c | 6534 | { |
ea9c271d DJ |
6535 | struct remote_state *rs; |
6536 | ||
0f71a2f6 | 6537 | /* architecture specific data */ |
2bc416ba | 6538 | remote_gdbarch_data_handle = |
23860348 | 6539 | gdbarch_data_register_post_init (init_remote_state); |
29709017 DJ |
6540 | remote_g_packet_data_handle = |
6541 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 6542 | |
ea9c271d DJ |
6543 | /* Initialize the per-target state. At the moment there is only one |
6544 | of these, not one per target. Only one target is active at a | |
6545 | time. The default buffer size is unimportant; it will be expanded | |
6546 | whenever a larger buffer is needed. */ | |
0b83947e | 6547 | rs = get_remote_state_raw (); |
ea9c271d DJ |
6548 | rs->buf_size = 400; |
6549 | rs->buf = xmalloc (rs->buf_size); | |
6550 | ||
c906108c SS |
6551 | init_remote_ops (); |
6552 | add_target (&remote_ops); | |
6553 | ||
6554 | init_extended_remote_ops (); | |
6555 | add_target (&extended_remote_ops); | |
cce74817 | 6556 | |
43ff13b4 JM |
6557 | init_remote_async_ops (); |
6558 | add_target (&remote_async_ops); | |
6559 | ||
6560 | init_extended_async_remote_ops (); | |
6561 | add_target (&extended_async_remote_ops); | |
6562 | ||
dc8acb97 | 6563 | /* Hook into new objfile notification. */ |
06d3b283 | 6564 | observer_attach_new_objfile (remote_new_objfile); |
dc8acb97 | 6565 | |
c906108c SS |
6566 | #if 0 |
6567 | init_remote_threadtests (); | |
6568 | #endif | |
6569 | ||
23860348 | 6570 | /* set/show remote ... */ |
d471ea57 | 6571 | |
1bedd215 | 6572 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
6573 | Remote protocol specific variables\n\ |
6574 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 6575 | the packets being used"), |
cff3e48b | 6576 | &remote_set_cmdlist, "set remote ", |
23860348 | 6577 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 6578 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
6579 | Remote protocol specific variables\n\ |
6580 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 6581 | the packets being used"), |
cff3e48b | 6582 | &remote_show_cmdlist, "show remote ", |
23860348 | 6583 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 6584 | |
1a966eab AC |
6585 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
6586 | Compare section data on target to the exec file.\n\ | |
6587 | Argument is a single section name (default: all loaded sections)."), | |
c906108c SS |
6588 | &cmdlist); |
6589 | ||
1a966eab AC |
6590 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
6591 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
6592 | maintenance packet TEXT\n\ |
6593 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
6594 | this command sends the string TEXT to the inferior, and displays the\n\ | |
6595 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 6596 | terminating `#' character and checksum."), |
c906108c SS |
6597 | &maintenancelist); |
6598 | ||
7915a72c AC |
6599 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
6600 | Set whether to send break if interrupted."), _("\ | |
6601 | Show whether to send break if interrupted."), _("\ | |
6602 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
2c5b56ce | 6603 | NULL, NULL, /* FIXME: i18n: Whether to send break if interrupted is %s. */ |
e707bbc2 | 6604 | &setlist, &showlist); |
c906108c | 6605 | |
23860348 | 6606 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 6607 | |
1a966eab AC |
6608 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
6609 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 6610 | &setlist); |
1a966eab AC |
6611 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
6612 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
6613 | &showlist); |
6614 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
6615 | set_memory_write_packet_size, _("\ |
6616 | Set the maximum number of bytes per memory-write packet.\n\ | |
6617 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
6618 | default packet size. The actual limit is further reduced\n\ | |
6619 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
6620 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
6621 | &remote_set_cmdlist); |
6622 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
6623 | set_memory_read_packet_size, _("\ |
6624 | Set the maximum number of bytes per memory-read packet.\n\ | |
6625 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
6626 | default packet size. The actual limit is further reduced\n\ | |
6627 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
6628 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
6629 | &remote_set_cmdlist); |
6630 | add_cmd ("memory-write-packet-size", no_class, | |
6631 | show_memory_write_packet_size, | |
1a966eab | 6632 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
6633 | &remote_show_cmdlist); |
6634 | add_cmd ("memory-read-packet-size", no_class, | |
6635 | show_memory_read_packet_size, | |
1a966eab | 6636 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 6637 | &remote_show_cmdlist); |
c906108c | 6638 | |
b3f42336 | 6639 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
6640 | &remote_hw_watchpoint_limit, _("\ |
6641 | Set the maximum number of target hardware watchpoints."), _("\ | |
6642 | Show the maximum number of target hardware watchpoints."), _("\ | |
6643 | Specify a negative limit for unlimited."), | |
2c5b56ce | 6644 | NULL, NULL, /* FIXME: i18n: The maximum number of target hardware watchpoints is %s. */ |
b3f42336 AC |
6645 | &remote_set_cmdlist, &remote_show_cmdlist); |
6646 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, | |
7915a72c AC |
6647 | &remote_hw_breakpoint_limit, _("\ |
6648 | Set the maximum number of target hardware breakpoints."), _("\ | |
6649 | Show the maximum number of target hardware breakpoints."), _("\ | |
6650 | Specify a negative limit for unlimited."), | |
2c5b56ce | 6651 | NULL, NULL, /* FIXME: i18n: The maximum number of target hardware breakpoints is %s. */ |
b3f42336 | 6652 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 6653 | |
4d28ad1e AC |
6654 | add_setshow_integer_cmd ("remoteaddresssize", class_obscure, |
6655 | &remote_address_size, _("\ | |
6656 | Set the maximum size of the address (in bits) in a memory packet."), _("\ | |
6657 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
6658 | NULL, | |
6659 | NULL, /* FIXME: i18n: */ | |
6660 | &setlist, &showlist); | |
c906108c | 6661 | |
444abaca | 6662 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 6663 | "X", "binary-download", 1); |
0f71a2f6 | 6664 | |
444abaca | 6665 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 6666 | "vCont", "verbose-resume", 0); |
506fb367 | 6667 | |
89be2091 DJ |
6668 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
6669 | "QPassSignals", "pass-signals", 0); | |
6670 | ||
444abaca | 6671 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 6672 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 6673 | |
444abaca | 6674 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 6675 | "P", "set-register", 1); |
d471ea57 | 6676 | |
444abaca | 6677 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 6678 | "p", "fetch-register", 1); |
b96ec7ac | 6679 | |
444abaca | 6680 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 6681 | "Z0", "software-breakpoint", 0); |
d471ea57 | 6682 | |
444abaca | 6683 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 6684 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 6685 | |
444abaca | 6686 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 6687 | "Z2", "write-watchpoint", 0); |
d471ea57 | 6688 | |
444abaca | 6689 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 6690 | "Z3", "read-watchpoint", 0); |
d471ea57 | 6691 | |
444abaca | 6692 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 6693 | "Z4", "access-watchpoint", 0); |
d471ea57 | 6694 | |
0876f84a DJ |
6695 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
6696 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 6697 | |
23181151 DJ |
6698 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
6699 | "qXfer:features:read", "target-features", 0); | |
6700 | ||
cfa9d6d9 DJ |
6701 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
6702 | "qXfer:libraries:read", "library-info", 0); | |
6703 | ||
fd79ecee DJ |
6704 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
6705 | "qXfer:memory-map:read", "memory-map", 0); | |
6706 | ||
0e7f50da UW |
6707 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_read], |
6708 | "qXfer:spu:read", "read-spu-object", 0); | |
6709 | ||
6710 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_write], | |
6711 | "qXfer:spu:write", "write-spu-object", 0); | |
6712 | ||
444abaca | 6713 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 6714 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
6715 | 0); |
6716 | ||
be2a5f71 DJ |
6717 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
6718 | "qSupported", "supported-packets", 0); | |
6719 | ||
37a105a1 DJ |
6720 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
6721 | Z sub-packet has its own set and show commands, but users may | |
6722 | have sets to this variable in their .gdbinit files (or in their | |
6723 | documentation). */ | |
e9e68a56 | 6724 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
6725 | &remote_Z_packet_detect, _("\ |
6726 | Set use of remote protocol `Z' packets"), _("\ | |
6727 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 6728 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 6729 | packets."), |
e9e68a56 | 6730 | set_remote_protocol_Z_packet_cmd, |
2c5b56ce | 6731 | show_remote_protocol_Z_packet_cmd, /* FIXME: i18n: Use of remote protocol `Z' packets is %s. */ |
e9e68a56 | 6732 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 CV |
6733 | |
6734 | /* Eventually initialize fileio. See fileio.c */ | |
6735 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
c906108c | 6736 | } |