Commit | Line | Data |
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c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c | 2 | |
6aba47ca | 3 | Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, |
9b254dd1 | 4 | 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 |
29182b13 | 5 | Free Software Foundation, Inc. |
c906108c | 6 | |
c5aa993b JM |
7 | This file is part of GDB. |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b JM |
12 | (at your option) any later version. |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c5aa993b | 21 | |
23860348 | 22 | /* See the GDB User Guide for details of the GDB remote protocol. */ |
c5aa993b | 23 | |
c906108c SS |
24 | #include "defs.h" |
25 | #include "gdb_string.h" | |
26 | #include <ctype.h> | |
27 | #include <fcntl.h> | |
c906108c SS |
28 | #include "inferior.h" |
29 | #include "bfd.h" | |
30 | #include "symfile.h" | |
60250e8b | 31 | #include "exceptions.h" |
c906108c | 32 | #include "target.h" |
c5aa993b | 33 | /*#include "terminal.h" */ |
c906108c SS |
34 | #include "gdbcmd.h" |
35 | #include "objfiles.h" | |
36 | #include "gdb-stabs.h" | |
37 | #include "gdbthread.h" | |
c2c6d25f | 38 | #include "remote.h" |
4e052eda | 39 | #include "regcache.h" |
fd0407d6 | 40 | #include "value.h" |
1ff9c3d6 | 41 | #include "gdb_assert.h" |
6867ae3e | 42 | #include "observer.h" |
a77053c2 | 43 | #include "solib.h" |
37a105a1 DJ |
44 | #include "cli/cli-decode.h" |
45 | #include "cli/cli-setshow.h" | |
424163ea | 46 | #include "target-descriptions.h" |
c906108c | 47 | |
7a292a7a | 48 | #include <ctype.h> |
9846de1b | 49 | #include <sys/time.h> |
c906108c | 50 | |
43ff13b4 | 51 | #include "event-loop.h" |
c2c6d25f | 52 | #include "event-top.h" |
2acceee2 | 53 | #include "inf-loop.h" |
43ff13b4 | 54 | |
c906108c SS |
55 | #include <signal.h> |
56 | #include "serial.h" | |
57 | ||
6240bebf MS |
58 | #include "gdbcore.h" /* for exec_bfd */ |
59 | ||
449092f6 | 60 | #include "remote-fileio.h" |
a6b151f1 | 61 | #include "gdb/fileio.h" |
3e88cf8d | 62 | #include "gdb_stat.h" |
449092f6 | 63 | |
fd79ecee DJ |
64 | #include "memory-map.h" |
65 | ||
6765f3e5 DJ |
66 | /* The size to align memory write packets, when practical. The protocol |
67 | does not guarantee any alignment, and gdb will generate short | |
68 | writes and unaligned writes, but even as a best-effort attempt this | |
69 | can improve bulk transfers. For instance, if a write is misaligned | |
70 | relative to the target's data bus, the stub may need to make an extra | |
71 | round trip fetching data from the target. This doesn't make a | |
72 | huge difference, but it's easy to do, so we try to be helpful. | |
73 | ||
74 | The alignment chosen is arbitrary; usually data bus width is | |
75 | important here, not the possibly larger cache line size. */ | |
76 | enum { REMOTE_ALIGN_WRITES = 16 }; | |
77 | ||
23860348 | 78 | /* Prototypes for local functions. */ |
6426a772 JM |
79 | static void cleanup_sigint_signal_handler (void *dummy); |
80 | static void initialize_sigint_signal_handler (void); | |
6d820c5c | 81 | static int getpkt_sane (char **buf, long *sizeof_buf, int forever); |
6426a772 | 82 | |
a14ed312 KB |
83 | static void handle_remote_sigint (int); |
84 | static void handle_remote_sigint_twice (int); | |
85 | static void async_remote_interrupt (gdb_client_data); | |
86 | void async_remote_interrupt_twice (gdb_client_data); | |
43ff13b4 | 87 | |
a14ed312 | 88 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 89 | |
316f2060 | 90 | static void remote_prepare_to_store (struct regcache *regcache); |
c906108c | 91 | |
56be3814 | 92 | static void remote_fetch_registers (struct regcache *regcache, int regno); |
c906108c | 93 | |
39f77062 KB |
94 | static void remote_resume (ptid_t ptid, int step, |
95 | enum target_signal siggnal); | |
a14ed312 | 96 | static void remote_open (char *name, int from_tty); |
c906108c | 97 | |
a14ed312 | 98 | static void extended_remote_open (char *name, int from_tty); |
c906108c | 99 | |
75c99385 | 100 | static void remote_open_1 (char *, int, struct target_ops *, int extended_p); |
c906108c | 101 | |
a14ed312 | 102 | static void remote_close (int quitting); |
c906108c | 103 | |
56be3814 | 104 | static void remote_store_registers (struct regcache *regcache, int regno); |
c906108c | 105 | |
a14ed312 | 106 | static void remote_mourn (void); |
c906108c | 107 | |
a14ed312 | 108 | static void extended_remote_restart (void); |
c906108c | 109 | |
a14ed312 | 110 | static void extended_remote_mourn (void); |
c906108c | 111 | |
a14ed312 | 112 | static void remote_mourn_1 (struct target_ops *); |
c906108c | 113 | |
6d820c5c | 114 | static void remote_send (char **buf, long *sizeof_buf_p); |
c906108c | 115 | |
a14ed312 | 116 | static int readchar (int timeout); |
c906108c | 117 | |
39f77062 | 118 | static ptid_t remote_wait (ptid_t ptid, |
75c99385 | 119 | struct target_waitstatus *status); |
c906108c | 120 | |
a14ed312 | 121 | static void remote_kill (void); |
c906108c | 122 | |
a14ed312 | 123 | static int tohex (int nib); |
c906108c | 124 | |
75c99385 PA |
125 | static int remote_can_async_p (void); |
126 | ||
127 | static int remote_is_async_p (void); | |
128 | ||
129 | static void remote_async (void (*callback) (enum inferior_event_type event_type, | |
130 | void *context), void *context); | |
131 | ||
132 | static int remote_async_mask (int new_mask); | |
133 | ||
a14ed312 | 134 | static void remote_detach (char *args, int from_tty); |
c906108c | 135 | |
a14ed312 | 136 | static void remote_interrupt (int signo); |
c906108c | 137 | |
a14ed312 | 138 | static void remote_interrupt_twice (int signo); |
7a292a7a | 139 | |
a14ed312 | 140 | static void interrupt_query (void); |
c906108c | 141 | |
79d7f229 PA |
142 | static void set_general_thread (struct ptid ptid); |
143 | static void set_continue_thread (struct ptid ptid); | |
c906108c | 144 | |
39f77062 | 145 | static int remote_thread_alive (ptid_t); |
c906108c | 146 | |
a14ed312 | 147 | static void get_offsets (void); |
c906108c | 148 | |
6d820c5c DJ |
149 | static void skip_frame (void); |
150 | ||
151 | static long read_frame (char **buf_p, long *sizeof_buf); | |
c906108c | 152 | |
a14ed312 | 153 | static int hexnumlen (ULONGEST num); |
c906108c | 154 | |
a14ed312 | 155 | static void init_remote_ops (void); |
c906108c | 156 | |
a14ed312 | 157 | static void init_extended_remote_ops (void); |
c906108c | 158 | |
94cc34af | 159 | static void remote_stop (ptid_t); |
c906108c | 160 | |
a14ed312 | 161 | static int ishex (int ch, int *val); |
c906108c | 162 | |
a14ed312 | 163 | static int stubhex (int ch); |
c906108c | 164 | |
a14ed312 | 165 | static int hexnumstr (char *, ULONGEST); |
c906108c | 166 | |
a14ed312 | 167 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 168 | |
a14ed312 | 169 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 170 | |
a14ed312 | 171 | static void print_packet (char *); |
c906108c | 172 | |
a14ed312 | 173 | static unsigned long crc32 (unsigned char *, int, unsigned int); |
c906108c | 174 | |
a14ed312 | 175 | static void compare_sections_command (char *, int); |
c906108c | 176 | |
a14ed312 | 177 | static void packet_command (char *, int); |
c906108c | 178 | |
a14ed312 | 179 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 180 | |
39f77062 | 181 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 182 | |
a14ed312 | 183 | static void remote_find_new_threads (void); |
c906108c | 184 | |
79d7f229 | 185 | static void record_currthread (ptid_t currthread); |
c906108c | 186 | |
30559e10 | 187 | static int fromhex (int a); |
c906108c | 188 | |
cfd77fa1 | 189 | static int hex2bin (const char *hex, gdb_byte *bin, int count); |
c906108c | 190 | |
cfd77fa1 | 191 | static int bin2hex (const gdb_byte *bin, char *hex, int count); |
234fa6d1 | 192 | |
a14ed312 | 193 | static int putpkt_binary (char *buf, int cnt); |
c906108c | 194 | |
a14ed312 | 195 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 196 | |
5a2468f5 | 197 | struct packet_config; |
5a2468f5 | 198 | |
a14ed312 | 199 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 200 | |
d471ea57 | 201 | static void update_packet_config (struct packet_config *config); |
5a2468f5 | 202 | |
bb572ddd DJ |
203 | static void set_remote_protocol_packet_cmd (char *args, int from_tty, |
204 | struct cmd_list_element *c); | |
205 | ||
206 | static void show_remote_protocol_packet_cmd (struct ui_file *file, | |
207 | int from_tty, | |
208 | struct cmd_list_element *c, | |
209 | const char *value); | |
210 | ||
a14ed312 | 211 | void _initialize_remote (void); |
c906108c | 212 | |
a6b151f1 DJ |
213 | /* For "remote". */ |
214 | ||
215 | static struct cmd_list_element *remote_cmdlist; | |
216 | ||
bb572ddd DJ |
217 | /* For "set remote" and "show remote". */ |
218 | ||
219 | static struct cmd_list_element *remote_set_cmdlist; | |
220 | static struct cmd_list_element *remote_show_cmdlist; | |
221 | ||
ea9c271d DJ |
222 | /* Description of the remote protocol state for the currently |
223 | connected target. This is per-target state, and independent of the | |
224 | selected architecture. */ | |
225 | ||
226 | struct remote_state | |
227 | { | |
228 | /* A buffer to use for incoming packets, and its current size. The | |
229 | buffer is grown dynamically for larger incoming packets. | |
230 | Outgoing packets may also be constructed in this buffer. | |
231 | BUF_SIZE is always at least REMOTE_PACKET_SIZE; | |
232 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing | |
233 | packets. */ | |
234 | char *buf; | |
235 | long buf_size; | |
be2a5f71 DJ |
236 | |
237 | /* If we negotiated packet size explicitly (and thus can bypass | |
238 | heuristics for the largest packet size that will not overflow | |
239 | a buffer in the stub), this will be set to that packet size. | |
240 | Otherwise zero, meaning to use the guessed size. */ | |
241 | long explicit_packet_size; | |
2d717e4f DJ |
242 | |
243 | /* remote_wait is normally called when the target is running and | |
244 | waits for a stop reply packet. But sometimes we need to call it | |
245 | when the target is already stopped. We can send a "?" packet | |
246 | and have remote_wait read the response. Or, if we already have | |
247 | the response, we can stash it in BUF and tell remote_wait to | |
248 | skip calling getpkt. This flag is set when BUF contains a | |
249 | stop reply packet and the target is not waiting. */ | |
250 | int cached_wait_status; | |
a6f3e723 SL |
251 | |
252 | /* True, if in no ack mode. That is, neither GDB nor the stub will | |
253 | expect acks from each other. The connection is assumed to be | |
254 | reliable. */ | |
255 | int noack_mode; | |
ea9c271d DJ |
256 | }; |
257 | ||
258 | /* This data could be associated with a target, but we do not always | |
259 | have access to the current target when we need it, so for now it is | |
260 | static. This will be fine for as long as only one target is in use | |
261 | at a time. */ | |
262 | static struct remote_state remote_state; | |
263 | ||
264 | static struct remote_state * | |
0b83947e | 265 | get_remote_state_raw (void) |
ea9c271d DJ |
266 | { |
267 | return &remote_state; | |
268 | } | |
269 | ||
270 | /* Description of the remote protocol for a given architecture. */ | |
d01949b6 | 271 | |
ad10f812 AC |
272 | struct packet_reg |
273 | { | |
274 | long offset; /* Offset into G packet. */ | |
275 | long regnum; /* GDB's internal register number. */ | |
276 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 277 | int in_g_packet; /* Always part of G packet. */ |
1cf3db46 | 278 | /* long size in bytes; == register_size (target_gdbarch, regnum); |
23860348 | 279 | at present. */ |
1cf3db46 | 280 | /* char *name; == gdbarch_register_name (target_gdbarch, regnum); |
c9f4d572 | 281 | at present. */ |
ad10f812 AC |
282 | }; |
283 | ||
ea9c271d | 284 | struct remote_arch_state |
d01949b6 | 285 | { |
ad10f812 AC |
286 | /* Description of the remote protocol registers. */ |
287 | long sizeof_g_packet; | |
b323314b AC |
288 | |
289 | /* Description of the remote protocol registers indexed by REGNUM | |
f57d151a | 290 | (making an array gdbarch_num_regs in size). */ |
b323314b | 291 | struct packet_reg *regs; |
ad10f812 | 292 | |
d01949b6 AC |
293 | /* This is the size (in chars) of the first response to the ``g'' |
294 | packet. It is used as a heuristic when determining the maximum | |
295 | size of memory-read and memory-write packets. A target will | |
296 | typically only reserve a buffer large enough to hold the ``g'' | |
297 | packet. The size does not include packet overhead (headers and | |
23860348 | 298 | trailers). */ |
d01949b6 AC |
299 | long actual_register_packet_size; |
300 | ||
301 | /* This is the maximum size (in chars) of a non read/write packet. | |
23860348 | 302 | It is also used as a cap on the size of read/write packets. */ |
d01949b6 AC |
303 | long remote_packet_size; |
304 | }; | |
305 | ||
3c3bea1c | 306 | |
d01949b6 AC |
307 | /* Handle for retreving the remote protocol data from gdbarch. */ |
308 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
309 | ||
ea9c271d DJ |
310 | static struct remote_arch_state * |
311 | get_remote_arch_state (void) | |
d01949b6 | 312 | { |
1cf3db46 | 313 | return gdbarch_data (target_gdbarch, remote_gdbarch_data_handle); |
d01949b6 AC |
314 | } |
315 | ||
0b83947e DJ |
316 | /* Fetch the global remote target state. */ |
317 | ||
318 | static struct remote_state * | |
319 | get_remote_state (void) | |
320 | { | |
321 | /* Make sure that the remote architecture state has been | |
322 | initialized, because doing so might reallocate rs->buf. Any | |
323 | function which calls getpkt also needs to be mindful of changes | |
324 | to rs->buf, but this call limits the number of places which run | |
325 | into trouble. */ | |
326 | get_remote_arch_state (); | |
327 | ||
328 | return get_remote_state_raw (); | |
329 | } | |
330 | ||
74ca34ce DJ |
331 | static int |
332 | compare_pnums (const void *lhs_, const void *rhs_) | |
333 | { | |
334 | const struct packet_reg * const *lhs = lhs_; | |
335 | const struct packet_reg * const *rhs = rhs_; | |
336 | ||
337 | if ((*lhs)->pnum < (*rhs)->pnum) | |
338 | return -1; | |
339 | else if ((*lhs)->pnum == (*rhs)->pnum) | |
340 | return 0; | |
341 | else | |
342 | return 1; | |
343 | } | |
344 | ||
d01949b6 AC |
345 | static void * |
346 | init_remote_state (struct gdbarch *gdbarch) | |
347 | { | |
74ca34ce | 348 | int regnum, num_remote_regs, offset; |
0b83947e | 349 | struct remote_state *rs = get_remote_state_raw (); |
ea9c271d | 350 | struct remote_arch_state *rsa; |
74ca34ce | 351 | struct packet_reg **remote_regs; |
ea9c271d DJ |
352 | |
353 | rsa = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_arch_state); | |
d01949b6 | 354 | |
123dc839 DJ |
355 | /* Use the architecture to build a regnum<->pnum table, which will be |
356 | 1:1 unless a feature set specifies otherwise. */ | |
f57d151a | 357 | rsa->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, |
4a22f64d | 358 | gdbarch_num_regs (gdbarch), |
f57d151a | 359 | struct packet_reg); |
4a22f64d | 360 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) |
ad10f812 | 361 | { |
ea9c271d | 362 | struct packet_reg *r = &rsa->regs[regnum]; |
baef701f | 363 | |
4a22f64d | 364 | if (register_size (gdbarch, regnum) == 0) |
baef701f DJ |
365 | /* Do not try to fetch zero-sized (placeholder) registers. */ |
366 | r->pnum = -1; | |
367 | else | |
368 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
369 | ||
b323314b | 370 | r->regnum = regnum; |
74ca34ce DJ |
371 | } |
372 | ||
373 | /* Define the g/G packet format as the contents of each register | |
374 | with a remote protocol number, in order of ascending protocol | |
375 | number. */ | |
376 | ||
4a22f64d UW |
377 | remote_regs = alloca (gdbarch_num_regs (gdbarch) |
378 | * sizeof (struct packet_reg *)); | |
f57d151a | 379 | for (num_remote_regs = 0, regnum = 0; |
4a22f64d | 380 | regnum < gdbarch_num_regs (gdbarch); |
f57d151a | 381 | regnum++) |
74ca34ce DJ |
382 | if (rsa->regs[regnum].pnum != -1) |
383 | remote_regs[num_remote_regs++] = &rsa->regs[regnum]; | |
7d58c67d | 384 | |
74ca34ce DJ |
385 | qsort (remote_regs, num_remote_regs, sizeof (struct packet_reg *), |
386 | compare_pnums); | |
387 | ||
388 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
389 | { | |
390 | remote_regs[regnum]->in_g_packet = 1; | |
391 | remote_regs[regnum]->offset = offset; | |
4a22f64d | 392 | offset += register_size (gdbarch, remote_regs[regnum]->regnum); |
ad10f812 AC |
393 | } |
394 | ||
74ca34ce DJ |
395 | /* Record the maximum possible size of the g packet - it may turn out |
396 | to be smaller. */ | |
397 | rsa->sizeof_g_packet = offset; | |
398 | ||
d01949b6 AC |
399 | /* Default maximum number of characters in a packet body. Many |
400 | remote stubs have a hardwired buffer size of 400 bytes | |
401 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
402 | as the maximum packet-size to ensure that the packet and an extra | |
403 | NUL character can always fit in the buffer. This stops GDB | |
404 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d DJ |
405 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
406 | rsa->remote_packet_size = 400 - 1; | |
d01949b6 | 407 | |
ea9c271d DJ |
408 | /* This one is filled in when a ``g'' packet is received. */ |
409 | rsa->actual_register_packet_size = 0; | |
410 | ||
411 | /* Should rsa->sizeof_g_packet needs more space than the | |
ad10f812 AC |
412 | default, adjust the size accordingly. Remember that each byte is |
413 | encoded as two characters. 32 is the overhead for the packet | |
414 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 415 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 416 | little. */ |
ea9c271d DJ |
417 | if (rsa->sizeof_g_packet > ((rsa->remote_packet_size - 32) / 2)) |
418 | rsa->remote_packet_size = (rsa->sizeof_g_packet * 2 + 32); | |
802188a7 | 419 | |
ea9c271d DJ |
420 | /* Make sure that the packet buffer is plenty big enough for |
421 | this architecture. */ | |
422 | if (rs->buf_size < rsa->remote_packet_size) | |
423 | { | |
424 | rs->buf_size = 2 * rsa->remote_packet_size; | |
7fca722e | 425 | rs->buf = xrealloc (rs->buf, rs->buf_size); |
ea9c271d | 426 | } |
6d820c5c | 427 | |
ea9c271d DJ |
428 | return rsa; |
429 | } | |
430 | ||
431 | /* Return the current allowed size of a remote packet. This is | |
432 | inferred from the current architecture, and should be used to | |
433 | limit the length of outgoing packets. */ | |
434 | static long | |
435 | get_remote_packet_size (void) | |
436 | { | |
be2a5f71 | 437 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
438 | struct remote_arch_state *rsa = get_remote_arch_state (); |
439 | ||
be2a5f71 DJ |
440 | if (rs->explicit_packet_size) |
441 | return rs->explicit_packet_size; | |
442 | ||
ea9c271d | 443 | return rsa->remote_packet_size; |
d01949b6 AC |
444 | } |
445 | ||
ad10f812 | 446 | static struct packet_reg * |
ea9c271d | 447 | packet_reg_from_regnum (struct remote_arch_state *rsa, long regnum) |
ad10f812 | 448 | { |
1cf3db46 | 449 | if (regnum < 0 && regnum >= gdbarch_num_regs (target_gdbarch)) |
b323314b AC |
450 | return NULL; |
451 | else | |
ad10f812 | 452 | { |
ea9c271d | 453 | struct packet_reg *r = &rsa->regs[regnum]; |
b323314b AC |
454 | gdb_assert (r->regnum == regnum); |
455 | return r; | |
ad10f812 | 456 | } |
ad10f812 AC |
457 | } |
458 | ||
459 | static struct packet_reg * | |
ea9c271d | 460 | packet_reg_from_pnum (struct remote_arch_state *rsa, LONGEST pnum) |
ad10f812 | 461 | { |
b323314b | 462 | int i; |
1cf3db46 | 463 | for (i = 0; i < gdbarch_num_regs (target_gdbarch); i++) |
ad10f812 | 464 | { |
ea9c271d | 465 | struct packet_reg *r = &rsa->regs[i]; |
b323314b AC |
466 | if (r->pnum == pnum) |
467 | return r; | |
ad10f812 AC |
468 | } |
469 | return NULL; | |
d01949b6 AC |
470 | } |
471 | ||
3c3bea1c GS |
472 | /* FIXME: graces/2002-08-08: These variables should eventually be |
473 | bound to an instance of the target object (as in gdbarch-tdep()), | |
474 | when such a thing exists. */ | |
475 | ||
476 | /* This is set to the data address of the access causing the target | |
477 | to stop for a watchpoint. */ | |
478 | static CORE_ADDR remote_watch_data_address; | |
479 | ||
94e08568 | 480 | /* This is non-zero if target stopped for a watchpoint. */ |
3c3bea1c GS |
481 | static int remote_stopped_by_watchpoint_p; |
482 | ||
c906108c SS |
483 | static struct target_ops remote_ops; |
484 | ||
485 | static struct target_ops extended_remote_ops; | |
486 | ||
b84876c2 PA |
487 | static int remote_async_mask_value = 1; |
488 | ||
6426a772 JM |
489 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
490 | ``forever'' still use the normal timeout mechanism. This is | |
491 | currently used by the ASYNC code to guarentee that target reads | |
492 | during the initial connect always time-out. Once getpkt has been | |
493 | modified to return a timeout indication and, in turn | |
494 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 495 | this can go away. */ |
6426a772 JM |
496 | static int wait_forever_enabled_p = 1; |
497 | ||
498 | ||
c906108c SS |
499 | /* This variable chooses whether to send a ^C or a break when the user |
500 | requests program interruption. Although ^C is usually what remote | |
501 | systems expect, and that is the default here, sometimes a break is | |
502 | preferable instead. */ | |
503 | ||
504 | static int remote_break; | |
505 | ||
c906108c SS |
506 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
507 | remote_open knows that we don't have a file open when the program | |
508 | starts. */ | |
819cc324 | 509 | static struct serial *remote_desc = NULL; |
c906108c | 510 | |
c906108c SS |
511 | /* This variable sets the number of bits in an address that are to be |
512 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
513 | leading zeros, the entire address would be sent. This variable | |
514 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The | |
515 | initial implementation of remote.c restricted the address sent in | |
516 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
517 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
518 | address was never sent. Since fixing this bug may cause a break in | |
519 | some remote targets this variable is principly provided to | |
23860348 | 520 | facilitate backward compatibility. */ |
c906108c SS |
521 | |
522 | static int remote_address_size; | |
523 | ||
75c99385 PA |
524 | /* Temporary to track who currently owns the terminal. See |
525 | remote_terminal_* for more details. */ | |
6426a772 JM |
526 | |
527 | static int remote_async_terminal_ours_p; | |
528 | ||
2d717e4f DJ |
529 | /* The executable file to use for "run" on the remote side. */ |
530 | ||
531 | static char *remote_exec_file = ""; | |
532 | ||
11cf8741 | 533 | \f |
11cf8741 | 534 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
535 | memory read/write packet. MIN (rsa->remote_packet_size, |
536 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 537 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
538 | (speed up transfers). The variables ``preferred_*'' (the user |
539 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 540 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
541 | |
542 | struct memory_packet_config | |
543 | { | |
544 | char *name; | |
545 | long size; | |
546 | int fixed_p; | |
547 | }; | |
548 | ||
549 | /* Compute the current size of a read/write packet. Since this makes | |
550 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
551 | ||
552 | static long | |
553 | get_memory_packet_size (struct memory_packet_config *config) | |
554 | { | |
d01949b6 | 555 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
556 | struct remote_arch_state *rsa = get_remote_arch_state (); |
557 | ||
11cf8741 JM |
558 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk |
559 | law?) that some hosts don't cope very well with large alloca() | |
560 | calls. Eventually the alloca() code will be replaced by calls to | |
561 | xmalloc() and make_cleanups() allowing this restriction to either | |
23860348 | 562 | be lifted or removed. */ |
11cf8741 JM |
563 | #ifndef MAX_REMOTE_PACKET_SIZE |
564 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
565 | #endif | |
3de11b2e | 566 | /* NOTE: 20 ensures we can write at least one byte. */ |
11cf8741 | 567 | #ifndef MIN_REMOTE_PACKET_SIZE |
3de11b2e | 568 | #define MIN_REMOTE_PACKET_SIZE 20 |
11cf8741 JM |
569 | #endif |
570 | long what_they_get; | |
571 | if (config->fixed_p) | |
572 | { | |
573 | if (config->size <= 0) | |
574 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
575 | else | |
576 | what_they_get = config->size; | |
577 | } | |
578 | else | |
579 | { | |
ea9c271d | 580 | what_they_get = get_remote_packet_size (); |
23860348 | 581 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
582 | if (config->size > 0 |
583 | && what_they_get > config->size) | |
584 | what_they_get = config->size; | |
be2a5f71 DJ |
585 | |
586 | /* Limit it to the size of the targets ``g'' response unless we have | |
587 | permission from the stub to use a larger packet size. */ | |
588 | if (rs->explicit_packet_size == 0 | |
589 | && rsa->actual_register_packet_size > 0 | |
590 | && what_they_get > rsa->actual_register_packet_size) | |
591 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 JM |
592 | } |
593 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
594 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
595 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
596 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
6d820c5c DJ |
597 | |
598 | /* Make sure there is room in the global buffer for this packet | |
599 | (including its trailing NUL byte). */ | |
600 | if (rs->buf_size < what_they_get + 1) | |
601 | { | |
602 | rs->buf_size = 2 * what_they_get; | |
603 | rs->buf = xrealloc (rs->buf, 2 * what_they_get); | |
604 | } | |
605 | ||
11cf8741 JM |
606 | return what_they_get; |
607 | } | |
608 | ||
609 | /* Update the size of a read/write packet. If they user wants | |
23860348 | 610 | something really big then do a sanity check. */ |
11cf8741 JM |
611 | |
612 | static void | |
613 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
614 | { | |
615 | int fixed_p = config->fixed_p; | |
616 | long size = config->size; | |
617 | if (args == NULL) | |
8a3fe4f8 | 618 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
619 | else if (strcmp (args, "hard") == 0 |
620 | || strcmp (args, "fixed") == 0) | |
621 | fixed_p = 1; | |
622 | else if (strcmp (args, "soft") == 0 | |
623 | || strcmp (args, "limit") == 0) | |
624 | fixed_p = 0; | |
625 | else | |
626 | { | |
627 | char *end; | |
628 | size = strtoul (args, &end, 0); | |
629 | if (args == end) | |
8a3fe4f8 | 630 | error (_("Invalid %s (bad syntax)."), config->name); |
11cf8741 JM |
631 | #if 0 |
632 | /* Instead of explicitly capping the size of a packet to | |
633 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
634 | instead allowed to set the size to something arbitrarily | |
23860348 | 635 | large. */ |
11cf8741 | 636 | if (size > MAX_REMOTE_PACKET_SIZE) |
8a3fe4f8 | 637 | error (_("Invalid %s (too large)."), config->name); |
11cf8741 JM |
638 | #endif |
639 | } | |
23860348 | 640 | /* Extra checks? */ |
11cf8741 JM |
641 | if (fixed_p && !config->fixed_p) |
642 | { | |
e2e0b3e5 AC |
643 | if (! query (_("The target may not be able to correctly handle a %s\n" |
644 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 645 | config->name, size)) |
8a3fe4f8 | 646 | error (_("Packet size not changed.")); |
11cf8741 | 647 | } |
23860348 | 648 | /* Update the config. */ |
11cf8741 JM |
649 | config->fixed_p = fixed_p; |
650 | config->size = size; | |
651 | } | |
652 | ||
653 | static void | |
654 | show_memory_packet_size (struct memory_packet_config *config) | |
655 | { | |
a3f17187 | 656 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 657 | if (config->fixed_p) |
a3f17187 | 658 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
659 | get_memory_packet_size (config)); |
660 | else | |
a3f17187 | 661 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
662 | get_memory_packet_size (config)); |
663 | } | |
664 | ||
665 | static struct memory_packet_config memory_write_packet_config = | |
666 | { | |
667 | "memory-write-packet-size", | |
668 | }; | |
669 | ||
670 | static void | |
671 | set_memory_write_packet_size (char *args, int from_tty) | |
672 | { | |
673 | set_memory_packet_size (args, &memory_write_packet_config); | |
674 | } | |
675 | ||
676 | static void | |
677 | show_memory_write_packet_size (char *args, int from_tty) | |
678 | { | |
679 | show_memory_packet_size (&memory_write_packet_config); | |
680 | } | |
681 | ||
682 | static long | |
683 | get_memory_write_packet_size (void) | |
684 | { | |
685 | return get_memory_packet_size (&memory_write_packet_config); | |
686 | } | |
687 | ||
688 | static struct memory_packet_config memory_read_packet_config = | |
689 | { | |
690 | "memory-read-packet-size", | |
691 | }; | |
692 | ||
693 | static void | |
694 | set_memory_read_packet_size (char *args, int from_tty) | |
695 | { | |
696 | set_memory_packet_size (args, &memory_read_packet_config); | |
697 | } | |
698 | ||
699 | static void | |
700 | show_memory_read_packet_size (char *args, int from_tty) | |
701 | { | |
702 | show_memory_packet_size (&memory_read_packet_config); | |
703 | } | |
704 | ||
705 | static long | |
706 | get_memory_read_packet_size (void) | |
707 | { | |
708 | long size = get_memory_packet_size (&memory_read_packet_config); | |
709 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an | |
710 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
711 | increased beyond this. */ |
712 | if (size > get_remote_packet_size ()) | |
713 | size = get_remote_packet_size (); | |
11cf8741 JM |
714 | return size; |
715 | } | |
716 | ||
11cf8741 | 717 | \f |
5a2468f5 JM |
718 | /* Generic configuration support for packets the stub optionally |
719 | supports. Allows the user to specify the use of the packet as well | |
23860348 | 720 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
721 | |
722 | enum packet_support | |
723 | { | |
724 | PACKET_SUPPORT_UNKNOWN = 0, | |
725 | PACKET_ENABLE, | |
726 | PACKET_DISABLE | |
727 | }; | |
728 | ||
5a2468f5 JM |
729 | struct packet_config |
730 | { | |
bb572ddd DJ |
731 | const char *name; |
732 | const char *title; | |
7f19b9a2 | 733 | enum auto_boolean detect; |
5a2468f5 JM |
734 | enum packet_support support; |
735 | }; | |
736 | ||
d471ea57 | 737 | /* Analyze a packet's return value and update the packet config |
23860348 | 738 | accordingly. */ |
d471ea57 AC |
739 | |
740 | enum packet_result | |
741 | { | |
742 | PACKET_ERROR, | |
743 | PACKET_OK, | |
744 | PACKET_UNKNOWN | |
745 | }; | |
746 | ||
5a2468f5 | 747 | static void |
d471ea57 | 748 | update_packet_config (struct packet_config *config) |
5a2468f5 | 749 | { |
d471ea57 AC |
750 | switch (config->detect) |
751 | { | |
7f19b9a2 | 752 | case AUTO_BOOLEAN_TRUE: |
d471ea57 AC |
753 | config->support = PACKET_ENABLE; |
754 | break; | |
7f19b9a2 | 755 | case AUTO_BOOLEAN_FALSE: |
d471ea57 AC |
756 | config->support = PACKET_DISABLE; |
757 | break; | |
7f19b9a2 | 758 | case AUTO_BOOLEAN_AUTO: |
d471ea57 AC |
759 | config->support = PACKET_SUPPORT_UNKNOWN; |
760 | break; | |
761 | } | |
5a2468f5 JM |
762 | } |
763 | ||
764 | static void | |
fba45db2 | 765 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
766 | { |
767 | char *support = "internal-error"; | |
768 | switch (config->support) | |
769 | { | |
770 | case PACKET_ENABLE: | |
771 | support = "enabled"; | |
772 | break; | |
773 | case PACKET_DISABLE: | |
774 | support = "disabled"; | |
775 | break; | |
776 | case PACKET_SUPPORT_UNKNOWN: | |
777 | support = "unknown"; | |
778 | break; | |
779 | } | |
780 | switch (config->detect) | |
781 | { | |
7f19b9a2 | 782 | case AUTO_BOOLEAN_AUTO: |
37a105a1 DJ |
783 | printf_filtered (_("Support for the `%s' packet is auto-detected, currently %s.\n"), |
784 | config->name, support); | |
5a2468f5 | 785 | break; |
7f19b9a2 AC |
786 | case AUTO_BOOLEAN_TRUE: |
787 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
788 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
789 | config->name, support); | |
8e248173 | 790 | break; |
5a2468f5 JM |
791 | } |
792 | } | |
793 | ||
794 | static void | |
bb572ddd DJ |
795 | add_packet_config_cmd (struct packet_config *config, const char *name, |
796 | const char *title, int legacy) | |
d471ea57 | 797 | { |
5a2468f5 JM |
798 | char *set_doc; |
799 | char *show_doc; | |
d471ea57 | 800 | char *cmd_name; |
3ed07be4 | 801 | |
5a2468f5 JM |
802 | config->name = name; |
803 | config->title = title; | |
7f19b9a2 | 804 | config->detect = AUTO_BOOLEAN_AUTO; |
8e248173 | 805 | config->support = PACKET_SUPPORT_UNKNOWN; |
b435e160 AC |
806 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
807 | name, title); | |
808 | show_doc = xstrprintf ("Show current use of remote protocol `%s' (%s) packet", | |
809 | name, title); | |
d471ea57 | 810 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 811 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 812 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
2c5b56ce | 813 | &config->detect, set_doc, show_doc, NULL, /* help_doc */ |
bb572ddd DJ |
814 | set_remote_protocol_packet_cmd, |
815 | show_remote_protocol_packet_cmd, | |
816 | &remote_set_cmdlist, &remote_show_cmdlist); | |
23860348 | 817 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
818 | if (legacy) |
819 | { | |
820 | char *legacy_name; | |
b435e160 | 821 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 822 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 823 | &remote_set_cmdlist); |
d471ea57 | 824 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 825 | &remote_show_cmdlist); |
d471ea57 | 826 | } |
5a2468f5 JM |
827 | } |
828 | ||
d471ea57 | 829 | static enum packet_result |
a76d924d | 830 | packet_check_result (const char *buf) |
5a2468f5 | 831 | { |
d471ea57 | 832 | if (buf[0] != '\0') |
5a2468f5 | 833 | { |
d471ea57 | 834 | /* The stub recognized the packet request. Check that the |
23860348 | 835 | operation succeeded. */ |
a76d924d DJ |
836 | if (buf[0] == 'E' |
837 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
838 | && buf[3] == '\0') | |
839 | /* "Enn" - definitly an error. */ | |
840 | return PACKET_ERROR; | |
841 | ||
842 | /* Always treat "E." as an error. This will be used for | |
843 | more verbose error messages, such as E.memtypes. */ | |
844 | if (buf[0] == 'E' && buf[1] == '.') | |
845 | return PACKET_ERROR; | |
846 | ||
847 | /* The packet may or may not be OK. Just assume it is. */ | |
848 | return PACKET_OK; | |
849 | } | |
850 | else | |
851 | /* The stub does not support the packet. */ | |
852 | return PACKET_UNKNOWN; | |
853 | } | |
854 | ||
855 | static enum packet_result | |
856 | packet_ok (const char *buf, struct packet_config *config) | |
857 | { | |
858 | enum packet_result result; | |
859 | ||
860 | result = packet_check_result (buf); | |
861 | switch (result) | |
862 | { | |
863 | case PACKET_OK: | |
864 | case PACKET_ERROR: | |
865 | /* The stub recognized the packet request. */ | |
d471ea57 AC |
866 | switch (config->support) |
867 | { | |
868 | case PACKET_SUPPORT_UNKNOWN: | |
869 | if (remote_debug) | |
870 | fprintf_unfiltered (gdb_stdlog, | |
871 | "Packet %s (%s) is supported\n", | |
872 | config->name, config->title); | |
873 | config->support = PACKET_ENABLE; | |
874 | break; | |
875 | case PACKET_DISABLE: | |
8e65ff28 | 876 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 877 | _("packet_ok: attempt to use a disabled packet")); |
d471ea57 AC |
878 | break; |
879 | case PACKET_ENABLE: | |
880 | break; | |
881 | } | |
a76d924d DJ |
882 | break; |
883 | case PACKET_UNKNOWN: | |
23860348 | 884 | /* The stub does not support the packet. */ |
d471ea57 AC |
885 | switch (config->support) |
886 | { | |
887 | case PACKET_ENABLE: | |
7f19b9a2 | 888 | if (config->detect == AUTO_BOOLEAN_AUTO) |
d471ea57 | 889 | /* If the stub previously indicated that the packet was |
23860348 | 890 | supported then there is a protocol error.. */ |
8a3fe4f8 | 891 | error (_("Protocol error: %s (%s) conflicting enabled responses."), |
d471ea57 AC |
892 | config->name, config->title); |
893 | else | |
23860348 | 894 | /* The user set it wrong. */ |
8a3fe4f8 | 895 | error (_("Enabled packet %s (%s) not recognized by stub"), |
d471ea57 AC |
896 | config->name, config->title); |
897 | break; | |
898 | case PACKET_SUPPORT_UNKNOWN: | |
899 | if (remote_debug) | |
900 | fprintf_unfiltered (gdb_stdlog, | |
901 | "Packet %s (%s) is NOT supported\n", | |
902 | config->name, config->title); | |
903 | config->support = PACKET_DISABLE; | |
904 | break; | |
905 | case PACKET_DISABLE: | |
906 | break; | |
907 | } | |
a76d924d | 908 | break; |
5a2468f5 | 909 | } |
a76d924d DJ |
910 | |
911 | return result; | |
5a2468f5 JM |
912 | } |
913 | ||
444abaca DJ |
914 | enum { |
915 | PACKET_vCont = 0, | |
916 | PACKET_X, | |
917 | PACKET_qSymbol, | |
918 | PACKET_P, | |
919 | PACKET_p, | |
920 | PACKET_Z0, | |
921 | PACKET_Z1, | |
922 | PACKET_Z2, | |
923 | PACKET_Z3, | |
924 | PACKET_Z4, | |
a6b151f1 DJ |
925 | PACKET_vFile_open, |
926 | PACKET_vFile_pread, | |
927 | PACKET_vFile_pwrite, | |
928 | PACKET_vFile_close, | |
929 | PACKET_vFile_unlink, | |
0876f84a | 930 | PACKET_qXfer_auxv, |
23181151 | 931 | PACKET_qXfer_features, |
cfa9d6d9 | 932 | PACKET_qXfer_libraries, |
fd79ecee | 933 | PACKET_qXfer_memory_map, |
0e7f50da UW |
934 | PACKET_qXfer_spu_read, |
935 | PACKET_qXfer_spu_write, | |
444abaca | 936 | PACKET_qGetTLSAddr, |
be2a5f71 | 937 | PACKET_qSupported, |
89be2091 | 938 | PACKET_QPassSignals, |
08388c79 | 939 | PACKET_qSearch_memory, |
2d717e4f DJ |
940 | PACKET_vAttach, |
941 | PACKET_vRun, | |
a6f3e723 | 942 | PACKET_QStartNoAckMode, |
444abaca DJ |
943 | PACKET_MAX |
944 | }; | |
506fb367 | 945 | |
444abaca | 946 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 MS |
947 | |
948 | static void | |
444abaca DJ |
949 | set_remote_protocol_packet_cmd (char *args, int from_tty, |
950 | struct cmd_list_element *c) | |
dc8acb97 | 951 | { |
444abaca | 952 | struct packet_config *packet; |
dc8acb97 | 953 | |
444abaca DJ |
954 | for (packet = remote_protocol_packets; |
955 | packet < &remote_protocol_packets[PACKET_MAX]; | |
956 | packet++) | |
957 | { | |
958 | if (&packet->detect == c->var) | |
959 | { | |
960 | update_packet_config (packet); | |
961 | return; | |
962 | } | |
963 | } | |
964 | internal_error (__FILE__, __LINE__, "Could not find config for %s", | |
965 | c->name); | |
dc8acb97 MS |
966 | } |
967 | ||
5a2468f5 | 968 | static void |
444abaca DJ |
969 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
970 | struct cmd_list_element *c, | |
971 | const char *value) | |
5a2468f5 | 972 | { |
444abaca | 973 | struct packet_config *packet; |
5a2468f5 | 974 | |
444abaca DJ |
975 | for (packet = remote_protocol_packets; |
976 | packet < &remote_protocol_packets[PACKET_MAX]; | |
977 | packet++) | |
978 | { | |
979 | if (&packet->detect == c->var) | |
980 | { | |
981 | show_packet_config_cmd (packet); | |
982 | return; | |
983 | } | |
984 | } | |
985 | internal_error (__FILE__, __LINE__, "Could not find config for %s", | |
986 | c->name); | |
5a2468f5 JM |
987 | } |
988 | ||
d471ea57 AC |
989 | /* Should we try one of the 'Z' requests? */ |
990 | ||
991 | enum Z_packet_type | |
992 | { | |
993 | Z_PACKET_SOFTWARE_BP, | |
994 | Z_PACKET_HARDWARE_BP, | |
995 | Z_PACKET_WRITE_WP, | |
996 | Z_PACKET_READ_WP, | |
997 | Z_PACKET_ACCESS_WP, | |
998 | NR_Z_PACKET_TYPES | |
999 | }; | |
96baa820 | 1000 | |
d471ea57 | 1001 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 1002 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 1003 | |
7f19b9a2 | 1004 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
1005 | |
1006 | static void | |
fba45db2 KB |
1007 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
1008 | struct cmd_list_element *c) | |
96baa820 | 1009 | { |
d471ea57 AC |
1010 | int i; |
1011 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
1012 | { | |
444abaca DJ |
1013 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
1014 | update_packet_config (&remote_protocol_packets[PACKET_Z0 + i]); | |
d471ea57 | 1015 | } |
96baa820 JM |
1016 | } |
1017 | ||
1018 | static void | |
08546159 AC |
1019 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
1020 | struct cmd_list_element *c, | |
1021 | const char *value) | |
96baa820 | 1022 | { |
d471ea57 AC |
1023 | int i; |
1024 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
1025 | { | |
444abaca | 1026 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 1027 | } |
96baa820 JM |
1028 | } |
1029 | ||
9d1f7ab2 MS |
1030 | /* Should we try the 'ThreadInfo' query packet? |
1031 | ||
1032 | This variable (NOT available to the user: auto-detect only!) | |
1033 | determines whether GDB will use the new, simpler "ThreadInfo" | |
1034 | query or the older, more complex syntax for thread queries. | |
802188a7 | 1035 | This is an auto-detect variable (set to true at each connect, |
9d1f7ab2 MS |
1036 | and set to false when the target fails to recognize it). */ |
1037 | ||
1038 | static int use_threadinfo_query; | |
1039 | static int use_threadextra_query; | |
1040 | ||
23860348 | 1041 | /* Tokens for use by the asynchronous signal handlers for SIGINT. */ |
d5d6fca5 DJ |
1042 | static struct async_signal_handler *sigint_remote_twice_token; |
1043 | static struct async_signal_handler *sigint_remote_token; | |
43ff13b4 | 1044 | |
c906108c SS |
1045 | \f |
1046 | ||
79d7f229 PA |
1047 | static ptid_t magic_null_ptid; |
1048 | static ptid_t not_sent_ptid; | |
1049 | static ptid_t any_thread_ptid; | |
1050 | ||
1051 | /* These are the threads which we last sent to the remote system. The | |
1052 | TID member will be -1 for all or -2 for not sent yet. */ | |
1053 | ||
1054 | static ptid_t general_thread; | |
1055 | static ptid_t continue_thread; | |
c5aa993b | 1056 | |
c906108c SS |
1057 | |
1058 | /* Call this function as a result of | |
1059 | 1) A halt indication (T packet) containing a thread id | |
1060 | 2) A direct query of currthread | |
1061 | 3) Successful execution of set thread | |
1062 | */ | |
1063 | ||
1064 | static void | |
79d7f229 | 1065 | record_currthread (ptid_t currthread) |
c906108c | 1066 | { |
c906108c | 1067 | general_thread = currthread; |
cce74817 | 1068 | |
c906108c SS |
1069 | /* If this is a new thread, add it to GDB's thread list. |
1070 | If we leave it up to WFI to do this, bad things will happen. */ | |
79d7f229 | 1071 | if (!in_thread_list (currthread)) |
c0a2216e PA |
1072 | { |
1073 | if (ptid_equal (pid_to_ptid (ptid_get_pid (currthread)), inferior_ptid)) | |
1074 | { | |
1075 | /* inferior_ptid has no thread member yet. This can happen | |
1076 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
1077 | stub doesn't support qC. This is the first stop reported | |
1078 | after an attach, so this is the main thread. Update the | |
1079 | ptid in the thread list. */ | |
1080 | struct thread_info *th = find_thread_pid (inferior_ptid); | |
1081 | inferior_ptid = th->ptid = currthread; | |
1082 | } | |
1083 | else if (ptid_equal (magic_null_ptid, inferior_ptid)) | |
1084 | { | |
1085 | /* inferior_ptid is not set yet. This can happen with the | |
1086 | vRun -> remote_wait,"TAAthread:" path if the stub | |
1087 | doesn't support qC. This is the first stop reported | |
1088 | after an attach, so this is the main thread. Update the | |
1089 | ptid in the thread list. */ | |
1090 | struct thread_info *th = find_thread_pid (inferior_ptid); | |
1091 | inferior_ptid = th->ptid = currthread; | |
1092 | } | |
1093 | else | |
1094 | /* This is really a new thread. Add it. */ | |
1095 | add_thread (currthread); | |
1096 | } | |
c906108c SS |
1097 | } |
1098 | ||
89be2091 DJ |
1099 | static char *last_pass_packet; |
1100 | ||
1101 | /* If 'QPassSignals' is supported, tell the remote stub what signals | |
1102 | it can simply pass through to the inferior without reporting. */ | |
1103 | ||
1104 | static void | |
1105 | remote_pass_signals (void) | |
1106 | { | |
1107 | if (remote_protocol_packets[PACKET_QPassSignals].support != PACKET_DISABLE) | |
1108 | { | |
1109 | char *pass_packet, *p; | |
1110 | int numsigs = (int) TARGET_SIGNAL_LAST; | |
1111 | int count = 0, i; | |
1112 | ||
1113 | gdb_assert (numsigs < 256); | |
1114 | for (i = 0; i < numsigs; i++) | |
1115 | { | |
1116 | if (signal_stop_state (i) == 0 | |
1117 | && signal_print_state (i) == 0 | |
1118 | && signal_pass_state (i) == 1) | |
1119 | count++; | |
1120 | } | |
1121 | pass_packet = xmalloc (count * 3 + strlen ("QPassSignals:") + 1); | |
1122 | strcpy (pass_packet, "QPassSignals:"); | |
1123 | p = pass_packet + strlen (pass_packet); | |
1124 | for (i = 0; i < numsigs; i++) | |
1125 | { | |
1126 | if (signal_stop_state (i) == 0 | |
1127 | && signal_print_state (i) == 0 | |
1128 | && signal_pass_state (i) == 1) | |
1129 | { | |
1130 | if (i >= 16) | |
1131 | *p++ = tohex (i >> 4); | |
1132 | *p++ = tohex (i & 15); | |
1133 | if (count) | |
1134 | *p++ = ';'; | |
1135 | else | |
1136 | break; | |
1137 | count--; | |
1138 | } | |
1139 | } | |
1140 | *p = 0; | |
1141 | if (!last_pass_packet || strcmp (last_pass_packet, pass_packet)) | |
1142 | { | |
1143 | struct remote_state *rs = get_remote_state (); | |
1144 | char *buf = rs->buf; | |
1145 | ||
1146 | putpkt (pass_packet); | |
1147 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1148 | packet_ok (buf, &remote_protocol_packets[PACKET_QPassSignals]); | |
1149 | if (last_pass_packet) | |
1150 | xfree (last_pass_packet); | |
1151 | last_pass_packet = pass_packet; | |
1152 | } | |
1153 | else | |
1154 | xfree (pass_packet); | |
1155 | } | |
1156 | } | |
1157 | ||
79d7f229 PA |
1158 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
1159 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
1160 | thread. If GEN is set, set the general thread, if not, then set | |
1161 | the step/continue thread. */ | |
c906108c | 1162 | static void |
79d7f229 | 1163 | set_thread (struct ptid ptid, int gen) |
c906108c | 1164 | { |
d01949b6 | 1165 | struct remote_state *rs = get_remote_state (); |
79d7f229 | 1166 | ptid_t state = gen ? general_thread : continue_thread; |
6d820c5c | 1167 | char *buf = rs->buf; |
79d7f229 | 1168 | char *endbuf = rs->buf + get_remote_packet_size (); |
c906108c | 1169 | |
79d7f229 | 1170 | if (ptid_equal (state, ptid)) |
c906108c SS |
1171 | return; |
1172 | ||
79d7f229 PA |
1173 | *buf++ = 'H'; |
1174 | *buf++ = gen ? 'g' : 'c'; | |
1175 | if (ptid_equal (ptid, magic_null_ptid)) | |
1176 | xsnprintf (buf, endbuf - buf, "0"); | |
1177 | else if (ptid_equal (ptid, any_thread_ptid)) | |
1178 | xsnprintf (buf, endbuf - buf, "0"); | |
1179 | else if (ptid_equal (ptid, minus_one_ptid)) | |
1180 | xsnprintf (buf, endbuf - buf, "-1"); | |
1181 | else | |
c906108c | 1182 | { |
79d7f229 PA |
1183 | int tid = ptid_get_tid (ptid); |
1184 | if (tid < 0) | |
1185 | xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
1186 | else | |
1187 | xsnprintf (buf, endbuf - buf, "%x", tid); | |
c906108c | 1188 | } |
79d7f229 | 1189 | putpkt (rs->buf); |
6d820c5c | 1190 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 1191 | if (gen) |
79d7f229 | 1192 | general_thread = ptid; |
c906108c | 1193 | else |
79d7f229 | 1194 | continue_thread = ptid; |
c906108c | 1195 | } |
79d7f229 PA |
1196 | |
1197 | static void | |
1198 | set_general_thread (struct ptid ptid) | |
1199 | { | |
1200 | set_thread (ptid, 1); | |
1201 | } | |
1202 | ||
1203 | static void | |
1204 | set_continue_thread (struct ptid ptid) | |
1205 | { | |
1206 | set_thread (ptid, 0); | |
1207 | } | |
1208 | ||
c906108c | 1209 | \f |
79d7f229 PA |
1210 | /* Return nonzero if the thread PTID is still alive on the remote |
1211 | system. */ | |
c906108c SS |
1212 | |
1213 | static int | |
39f77062 | 1214 | remote_thread_alive (ptid_t ptid) |
c906108c | 1215 | { |
6d820c5c | 1216 | struct remote_state *rs = get_remote_state (); |
79d7f229 | 1217 | int tid = ptid_get_tid (ptid); |
c906108c | 1218 | |
c0a2216e PA |
1219 | if (ptid_equal (ptid, magic_null_ptid)) |
1220 | /* The main thread is always alive. */ | |
1221 | return 1; | |
1222 | ||
1223 | if (ptid_get_pid (ptid) != 0 && ptid_get_tid (ptid) == 0) | |
1224 | /* The main thread is always alive. This can happen after a | |
1225 | vAttach, if the remote side doesn't support | |
1226 | multi-threading. */ | |
1227 | return 1; | |
1228 | ||
cce74817 | 1229 | if (tid < 0) |
2e9f7625 | 1230 | xsnprintf (rs->buf, get_remote_packet_size (), "T-%08x", -tid); |
c906108c | 1231 | else |
2e9f7625 DJ |
1232 | xsnprintf (rs->buf, get_remote_packet_size (), "T%08x", tid); |
1233 | putpkt (rs->buf); | |
6d820c5c | 1234 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1235 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
1236 | } |
1237 | ||
1238 | /* About these extended threadlist and threadinfo packets. They are | |
1239 | variable length packets but, the fields within them are often fixed | |
1240 | length. They are redundent enough to send over UDP as is the | |
1241 | remote protocol in general. There is a matching unit test module | |
1242 | in libstub. */ | |
1243 | ||
cce74817 JM |
1244 | #define OPAQUETHREADBYTES 8 |
1245 | ||
1246 | /* a 64 bit opaque identifier */ | |
1247 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
1248 | ||
23860348 MS |
1249 | /* WARNING: This threadref data structure comes from the remote O.S., |
1250 | libstub protocol encoding, and remote.c. it is not particularly | |
1251 | changable. */ | |
cce74817 JM |
1252 | |
1253 | /* Right now, the internal structure is int. We want it to be bigger. | |
1254 | Plan to fix this. | |
c5aa993b | 1255 | */ |
cce74817 | 1256 | |
23860348 | 1257 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 1258 | |
9d1f7ab2 | 1259 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 1260 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
1261 | |
1262 | struct gdb_ext_thread_info | |
c5aa993b | 1263 | { |
23860348 | 1264 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 1265 | int active; /* Has state interesting to GDB? |
23860348 | 1266 | regs, stack. */ |
2bc416ba | 1267 | char display[256]; /* Brief state display, name, |
cedea757 | 1268 | blocked/suspended. */ |
23860348 | 1269 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 1270 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 1271 | whatever. */ |
c5aa993b | 1272 | }; |
cce74817 JM |
1273 | |
1274 | /* The volume of remote transfers can be limited by submitting | |
1275 | a mask containing bits specifying the desired information. | |
1276 | Use a union of these values as the 'selection' parameter to | |
1277 | get_thread_info. FIXME: Make these TAG names more thread specific. | |
c5aa993b | 1278 | */ |
cce74817 JM |
1279 | |
1280 | #define TAG_THREADID 1 | |
1281 | #define TAG_EXISTS 2 | |
1282 | #define TAG_DISPLAY 4 | |
1283 | #define TAG_THREADNAME 8 | |
c5aa993b | 1284 | #define TAG_MOREDISPLAY 16 |
cce74817 | 1285 | |
23860348 | 1286 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 1287 | |
b2dd6311 | 1288 | char *unpack_varlen_hex (char *buff, ULONGEST *result); |
cce74817 | 1289 | |
a14ed312 | 1290 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 1291 | |
a14ed312 | 1292 | static char *pack_nibble (char *buf, int nibble); |
cce74817 | 1293 | |
23860348 | 1294 | static char *pack_hex_byte (char *pkt, int /* unsigned char */ byte); |
cce74817 | 1295 | |
a14ed312 | 1296 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 1297 | |
a14ed312 | 1298 | static char *pack_int (char *buf, int value); |
cce74817 | 1299 | |
a14ed312 | 1300 | static char *unpack_int (char *buf, int *value); |
cce74817 | 1301 | |
a14ed312 | 1302 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 1303 | |
23860348 | 1304 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 1305 | |
23860348 | 1306 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 1307 | |
23860348 | 1308 | void int_to_threadref (threadref *id, int value); |
cce74817 | 1309 | |
23860348 | 1310 | static int threadref_to_int (threadref *ref); |
cce74817 | 1311 | |
23860348 | 1312 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 1313 | |
23860348 | 1314 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 1315 | |
2bc416ba | 1316 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 1317 | threadref *id); |
cce74817 | 1318 | |
a14ed312 | 1319 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 1320 | threadref *expectedref, |
a14ed312 KB |
1321 | struct gdb_ext_thread_info |
1322 | *info); | |
cce74817 JM |
1323 | |
1324 | ||
2bc416ba | 1325 | static int remote_get_threadinfo (threadref *threadid, |
23860348 | 1326 | int fieldset, /*TAG mask */ |
a14ed312 | 1327 | struct gdb_ext_thread_info *info); |
cce74817 | 1328 | |
a14ed312 KB |
1329 | static char *pack_threadlist_request (char *pkt, int startflag, |
1330 | int threadcount, | |
23860348 | 1331 | threadref *nextthread); |
cce74817 | 1332 | |
a14ed312 KB |
1333 | static int parse_threadlist_response (char *pkt, |
1334 | int result_limit, | |
23860348 | 1335 | threadref *original_echo, |
2bc416ba | 1336 | threadref *resultlist, |
23860348 | 1337 | int *doneflag); |
cce74817 | 1338 | |
a14ed312 | 1339 | static int remote_get_threadlist (int startflag, |
23860348 | 1340 | threadref *nextthread, |
a14ed312 KB |
1341 | int result_limit, |
1342 | int *done, | |
2bc416ba | 1343 | int *result_count, |
23860348 | 1344 | threadref *threadlist); |
cce74817 | 1345 | |
23860348 | 1346 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 1347 | |
a14ed312 KB |
1348 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
1349 | void *context, int looplimit); | |
cce74817 | 1350 | |
23860348 | 1351 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 1352 | |
23860348 | 1353 | /* Encode 64 bits in 16 chars of hex. */ |
c906108c SS |
1354 | |
1355 | static const char hexchars[] = "0123456789abcdef"; | |
1356 | ||
1357 | static int | |
fba45db2 | 1358 | ishex (int ch, int *val) |
c906108c SS |
1359 | { |
1360 | if ((ch >= 'a') && (ch <= 'f')) | |
1361 | { | |
1362 | *val = ch - 'a' + 10; | |
1363 | return 1; | |
1364 | } | |
1365 | if ((ch >= 'A') && (ch <= 'F')) | |
1366 | { | |
1367 | *val = ch - 'A' + 10; | |
1368 | return 1; | |
1369 | } | |
1370 | if ((ch >= '0') && (ch <= '9')) | |
1371 | { | |
1372 | *val = ch - '0'; | |
1373 | return 1; | |
1374 | } | |
1375 | return 0; | |
1376 | } | |
1377 | ||
1378 | static int | |
fba45db2 | 1379 | stubhex (int ch) |
c906108c SS |
1380 | { |
1381 | if (ch >= 'a' && ch <= 'f') | |
1382 | return ch - 'a' + 10; | |
1383 | if (ch >= '0' && ch <= '9') | |
1384 | return ch - '0'; | |
1385 | if (ch >= 'A' && ch <= 'F') | |
1386 | return ch - 'A' + 10; | |
1387 | return -1; | |
1388 | } | |
1389 | ||
1390 | static int | |
fba45db2 | 1391 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
1392 | { |
1393 | int nibble; | |
1394 | int retval = 0; | |
1395 | ||
1396 | while (fieldlength) | |
1397 | { | |
1398 | nibble = stubhex (*buff++); | |
1399 | retval |= nibble; | |
1400 | fieldlength--; | |
1401 | if (fieldlength) | |
1402 | retval = retval << 4; | |
1403 | } | |
1404 | return retval; | |
1405 | } | |
1406 | ||
1407 | char * | |
fba45db2 | 1408 | unpack_varlen_hex (char *buff, /* packet to parse */ |
b2dd6311 | 1409 | ULONGEST *result) |
c906108c SS |
1410 | { |
1411 | int nibble; | |
d49c44d5 | 1412 | ULONGEST retval = 0; |
c906108c SS |
1413 | |
1414 | while (ishex (*buff, &nibble)) | |
1415 | { | |
1416 | buff++; | |
1417 | retval = retval << 4; | |
1418 | retval |= nibble & 0x0f; | |
1419 | } | |
1420 | *result = retval; | |
1421 | return buff; | |
1422 | } | |
1423 | ||
1424 | static char * | |
fba45db2 | 1425 | unpack_nibble (char *buf, int *val) |
c906108c | 1426 | { |
b7589f7d | 1427 | *val = fromhex (*buf++); |
c906108c SS |
1428 | return buf; |
1429 | } | |
1430 | ||
1431 | static char * | |
fba45db2 | 1432 | pack_nibble (char *buf, int nibble) |
c906108c SS |
1433 | { |
1434 | *buf++ = hexchars[(nibble & 0x0f)]; | |
1435 | return buf; | |
1436 | } | |
1437 | ||
1438 | static char * | |
fba45db2 | 1439 | pack_hex_byte (char *pkt, int byte) |
c906108c SS |
1440 | { |
1441 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
1442 | *pkt++ = hexchars[(byte & 0xf)]; | |
1443 | return pkt; | |
1444 | } | |
1445 | ||
1446 | static char * | |
fba45db2 | 1447 | unpack_byte (char *buf, int *value) |
c906108c SS |
1448 | { |
1449 | *value = stub_unpack_int (buf, 2); | |
1450 | return buf + 2; | |
1451 | } | |
1452 | ||
1453 | static char * | |
fba45db2 | 1454 | pack_int (char *buf, int value) |
c906108c SS |
1455 | { |
1456 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
1457 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
1458 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
1459 | buf = pack_hex_byte (buf, (value & 0xff)); | |
1460 | return buf; | |
1461 | } | |
1462 | ||
1463 | static char * | |
fba45db2 | 1464 | unpack_int (char *buf, int *value) |
c906108c SS |
1465 | { |
1466 | *value = stub_unpack_int (buf, 8); | |
1467 | return buf + 8; | |
1468 | } | |
1469 | ||
23860348 | 1470 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 1471 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
1472 | |
1473 | static char * | |
fba45db2 | 1474 | pack_string (char *pkt, char *string) |
c906108c SS |
1475 | { |
1476 | char ch; | |
1477 | int len; | |
1478 | ||
1479 | len = strlen (string); | |
1480 | if (len > 200) | |
23860348 | 1481 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
1482 | pkt = pack_hex_byte (pkt, len); |
1483 | while (len-- > 0) | |
1484 | { | |
1485 | ch = *string++; | |
1486 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 1487 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
1488 | *pkt++ = ch; |
1489 | } | |
1490 | return pkt; | |
1491 | } | |
1492 | #endif /* 0 (unused) */ | |
1493 | ||
1494 | static char * | |
fba45db2 | 1495 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
1496 | { |
1497 | while (length--) | |
1498 | *dest++ = *src++; | |
1499 | *dest = '\0'; | |
1500 | return src; | |
1501 | } | |
1502 | ||
1503 | static char * | |
fba45db2 | 1504 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
1505 | { |
1506 | char *limit; | |
1507 | unsigned char *altid; | |
1508 | ||
1509 | altid = (unsigned char *) id; | |
1510 | limit = pkt + BUF_THREAD_ID_SIZE; | |
1511 | while (pkt < limit) | |
1512 | pkt = pack_hex_byte (pkt, *altid++); | |
1513 | return pkt; | |
1514 | } | |
1515 | ||
1516 | ||
1517 | static char * | |
fba45db2 | 1518 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
1519 | { |
1520 | char *altref; | |
1521 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
1522 | int x, y; | |
1523 | ||
1524 | altref = (char *) id; | |
1525 | ||
1526 | while (inbuf < limit) | |
1527 | { | |
1528 | x = stubhex (*inbuf++); | |
1529 | y = stubhex (*inbuf++); | |
1530 | *altref++ = (x << 4) | y; | |
1531 | } | |
1532 | return inbuf; | |
1533 | } | |
1534 | ||
1535 | /* Externally, threadrefs are 64 bits but internally, they are still | |
1536 | ints. This is due to a mismatch of specifications. We would like | |
1537 | to use 64bit thread references internally. This is an adapter | |
1538 | function. */ | |
1539 | ||
1540 | void | |
fba45db2 | 1541 | int_to_threadref (threadref *id, int value) |
c906108c SS |
1542 | { |
1543 | unsigned char *scan; | |
1544 | ||
1545 | scan = (unsigned char *) id; | |
1546 | { | |
1547 | int i = 4; | |
1548 | while (i--) | |
1549 | *scan++ = 0; | |
1550 | } | |
1551 | *scan++ = (value >> 24) & 0xff; | |
1552 | *scan++ = (value >> 16) & 0xff; | |
1553 | *scan++ = (value >> 8) & 0xff; | |
1554 | *scan++ = (value & 0xff); | |
1555 | } | |
1556 | ||
1557 | static int | |
fba45db2 | 1558 | threadref_to_int (threadref *ref) |
c906108c SS |
1559 | { |
1560 | int i, value = 0; | |
1561 | unsigned char *scan; | |
1562 | ||
cfd77fa1 | 1563 | scan = *ref; |
c906108c SS |
1564 | scan += 4; |
1565 | i = 4; | |
1566 | while (i-- > 0) | |
1567 | value = (value << 8) | ((*scan++) & 0xff); | |
1568 | return value; | |
1569 | } | |
1570 | ||
1571 | static void | |
fba45db2 | 1572 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
1573 | { |
1574 | int i; | |
1575 | unsigned char *csrc, *cdest; | |
1576 | ||
1577 | csrc = (unsigned char *) src; | |
1578 | cdest = (unsigned char *) dest; | |
1579 | i = 8; | |
1580 | while (i--) | |
1581 | *cdest++ = *csrc++; | |
1582 | } | |
1583 | ||
1584 | static int | |
fba45db2 | 1585 | threadmatch (threadref *dest, threadref *src) |
c906108c | 1586 | { |
23860348 | 1587 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
1588 | #if 0 |
1589 | unsigned char *srcp, *destp; | |
1590 | int i, result; | |
1591 | srcp = (char *) src; | |
1592 | destp = (char *) dest; | |
1593 | ||
1594 | result = 1; | |
1595 | while (i-- > 0) | |
1596 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
1597 | return result; | |
1598 | #endif | |
1599 | return 1; | |
1600 | } | |
1601 | ||
1602 | /* | |
c5aa993b JM |
1603 | threadid:1, # always request threadid |
1604 | context_exists:2, | |
1605 | display:4, | |
1606 | unique_name:8, | |
1607 | more_display:16 | |
1608 | */ | |
c906108c SS |
1609 | |
1610 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
1611 | ||
1612 | static char * | |
fba45db2 | 1613 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 1614 | { |
23860348 MS |
1615 | *pkt++ = 'q'; /* Info Query */ |
1616 | *pkt++ = 'P'; /* process or thread info */ | |
1617 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 1618 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 1619 | *pkt = '\0'; /* terminate */ |
c906108c SS |
1620 | return pkt; |
1621 | } | |
1622 | ||
23860348 | 1623 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 1624 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 1625 | add more fields as time goes by. */ |
c906108c | 1626 | |
23860348 | 1627 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 1628 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 1629 | fetch registers and its stack? */ |
c5aa993b | 1630 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 1631 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 1632 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 1633 | the process. */ |
c906108c SS |
1634 | |
1635 | static int | |
fba45db2 KB |
1636 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
1637 | struct gdb_ext_thread_info *info) | |
c906108c | 1638 | { |
d01949b6 | 1639 | struct remote_state *rs = get_remote_state (); |
c906108c | 1640 | int mask, length; |
cfd77fa1 | 1641 | int tag; |
c906108c | 1642 | threadref ref; |
6d820c5c | 1643 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
1644 | int retval = 1; |
1645 | ||
23860348 | 1646 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
1647 | info->active = 0; |
1648 | info->display[0] = '\0'; | |
1649 | info->shortname[0] = '\0'; | |
1650 | info->more_display[0] = '\0'; | |
1651 | ||
23860348 MS |
1652 | /* Assume the characters indicating the packet type have been |
1653 | stripped. */ | |
c906108c SS |
1654 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
1655 | pkt = unpack_threadid (pkt, &ref); | |
1656 | ||
1657 | if (mask == 0) | |
8a3fe4f8 | 1658 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 1659 | if (!threadmatch (&ref, expectedref)) |
23860348 | 1660 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 1661 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
1662 | return 0; |
1663 | } | |
1664 | copy_threadref (&info->threadid, &ref); | |
1665 | ||
23860348 | 1666 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 1667 | |
23860348 MS |
1668 | /* Packets are terminated with nulls. */ |
1669 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
1670 | { |
1671 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
1672 | pkt = unpack_byte (pkt, &length); /* length */ |
1673 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 1674 | { |
8a3fe4f8 | 1675 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
1676 | retval = 0; |
1677 | break; | |
1678 | } | |
1679 | if (tag == TAG_THREADID) | |
1680 | { | |
1681 | if (length != 16) | |
1682 | { | |
8a3fe4f8 | 1683 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
1684 | retval = 0; |
1685 | break; | |
1686 | } | |
1687 | pkt = unpack_threadid (pkt, &ref); | |
1688 | mask = mask & ~TAG_THREADID; | |
1689 | continue; | |
1690 | } | |
1691 | if (tag == TAG_EXISTS) | |
1692 | { | |
1693 | info->active = stub_unpack_int (pkt, length); | |
1694 | pkt += length; | |
1695 | mask = mask & ~(TAG_EXISTS); | |
1696 | if (length > 8) | |
1697 | { | |
8a3fe4f8 | 1698 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
1699 | retval = 0; |
1700 | break; | |
1701 | } | |
1702 | continue; | |
1703 | } | |
1704 | if (tag == TAG_THREADNAME) | |
1705 | { | |
1706 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
1707 | mask = mask & ~TAG_THREADNAME; | |
1708 | continue; | |
1709 | } | |
1710 | if (tag == TAG_DISPLAY) | |
1711 | { | |
1712 | pkt = unpack_string (pkt, &info->display[0], length); | |
1713 | mask = mask & ~TAG_DISPLAY; | |
1714 | continue; | |
1715 | } | |
1716 | if (tag == TAG_MOREDISPLAY) | |
1717 | { | |
1718 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
1719 | mask = mask & ~TAG_MOREDISPLAY; | |
1720 | continue; | |
1721 | } | |
8a3fe4f8 | 1722 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 1723 | break; /* Not a tag we know about. */ |
c906108c SS |
1724 | } |
1725 | return retval; | |
1726 | } | |
1727 | ||
1728 | static int | |
fba45db2 KB |
1729 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
1730 | struct gdb_ext_thread_info *info) | |
c906108c | 1731 | { |
d01949b6 | 1732 | struct remote_state *rs = get_remote_state (); |
c906108c | 1733 | int result; |
c906108c | 1734 | |
2e9f7625 DJ |
1735 | pack_threadinfo_request (rs->buf, fieldset, threadid); |
1736 | putpkt (rs->buf); | |
6d820c5c | 1737 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1738 | result = remote_unpack_thread_info_response (rs->buf + 2, |
23860348 | 1739 | threadid, info); |
c906108c SS |
1740 | return result; |
1741 | } | |
1742 | ||
c906108c SS |
1743 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
1744 | ||
1745 | static char * | |
fba45db2 KB |
1746 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
1747 | threadref *nextthread) | |
c906108c SS |
1748 | { |
1749 | *pkt++ = 'q'; /* info query packet */ | |
1750 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 1751 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
1752 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
1753 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
1754 | *pkt = '\0'; | |
1755 | return pkt; | |
1756 | } | |
1757 | ||
1758 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
1759 | ||
1760 | static int | |
fba45db2 KB |
1761 | parse_threadlist_response (char *pkt, int result_limit, |
1762 | threadref *original_echo, threadref *resultlist, | |
1763 | int *doneflag) | |
c906108c | 1764 | { |
d01949b6 | 1765 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1766 | char *limit; |
1767 | int count, resultcount, done; | |
1768 | ||
1769 | resultcount = 0; | |
1770 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 1771 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 1772 | /* done parse past here */ |
c906108c SS |
1773 | pkt = unpack_byte (pkt, &count); /* count field */ |
1774 | pkt = unpack_nibble (pkt, &done); | |
1775 | /* The first threadid is the argument threadid. */ | |
1776 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
1777 | while ((count-- > 0) && (pkt < limit)) | |
1778 | { | |
1779 | pkt = unpack_threadid (pkt, resultlist++); | |
1780 | if (resultcount++ >= result_limit) | |
1781 | break; | |
1782 | } | |
1783 | if (doneflag) | |
1784 | *doneflag = done; | |
1785 | return resultcount; | |
1786 | } | |
1787 | ||
1788 | static int | |
fba45db2 KB |
1789 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
1790 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 1791 | { |
d01949b6 | 1792 | struct remote_state *rs = get_remote_state (); |
c906108c | 1793 | static threadref echo_nextthread; |
c906108c SS |
1794 | int result = 1; |
1795 | ||
23860348 | 1796 | /* Trancate result limit to be smaller than the packet size. */ |
ea9c271d DJ |
1797 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) >= get_remote_packet_size ()) |
1798 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; | |
c906108c | 1799 | |
6d820c5c DJ |
1800 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
1801 | putpkt (rs->buf); | |
1802 | getpkt (&rs->buf, &rs->buf_size, 0); | |
c906108c | 1803 | |
d8f2712d VP |
1804 | if (*rs->buf == '\0') |
1805 | *result_count = 0; | |
1806 | else | |
1807 | *result_count = | |
1808 | parse_threadlist_response (rs->buf + 2, result_limit, &echo_nextthread, | |
1809 | threadlist, done); | |
c906108c SS |
1810 | |
1811 | if (!threadmatch (&echo_nextthread, nextthread)) | |
1812 | { | |
23860348 MS |
1813 | /* FIXME: This is a good reason to drop the packet. */ |
1814 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
1815 | /* Possabilities : |
1816 | retransmit immediatly - race conditions | |
1817 | retransmit after timeout - yes | |
1818 | exit | |
1819 | wait for packet, then exit | |
1820 | */ | |
8a3fe4f8 | 1821 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 1822 | return 0; /* I choose simply exiting. */ |
c906108c SS |
1823 | } |
1824 | if (*result_count <= 0) | |
1825 | { | |
1826 | if (*done != 1) | |
1827 | { | |
8a3fe4f8 | 1828 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
1829 | result = 0; |
1830 | } | |
1831 | return result; /* break; */ | |
1832 | } | |
1833 | if (*result_count > result_limit) | |
1834 | { | |
1835 | *result_count = 0; | |
8a3fe4f8 | 1836 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
1837 | return 0; |
1838 | } | |
1839 | return result; | |
1840 | } | |
1841 | ||
23860348 MS |
1842 | /* This is the interface between remote and threads, remotes upper |
1843 | interface. */ | |
c906108c SS |
1844 | |
1845 | /* remote_find_new_threads retrieves the thread list and for each | |
1846 | thread in the list, looks up the thread in GDB's internal list, | |
79d7f229 | 1847 | adding the thread if it does not already exist. This involves |
c906108c SS |
1848 | getting partial thread lists from the remote target so, polling the |
1849 | quit_flag is required. */ | |
1850 | ||
1851 | ||
23860348 | 1852 | /* About this many threadisds fit in a packet. */ |
c906108c SS |
1853 | |
1854 | #define MAXTHREADLISTRESULTS 32 | |
1855 | ||
1856 | static int | |
fba45db2 KB |
1857 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
1858 | int looplimit) | |
c906108c SS |
1859 | { |
1860 | int done, i, result_count; | |
1861 | int startflag = 1; | |
1862 | int result = 1; | |
1863 | int loopcount = 0; | |
1864 | static threadref nextthread; | |
1865 | static threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
1866 | ||
1867 | done = 0; | |
1868 | while (!done) | |
1869 | { | |
1870 | if (loopcount++ > looplimit) | |
1871 | { | |
1872 | result = 0; | |
8a3fe4f8 | 1873 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
1874 | break; |
1875 | } | |
1876 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS, | |
1877 | &done, &result_count, resultthreadlist)) | |
1878 | { | |
1879 | result = 0; | |
1880 | break; | |
1881 | } | |
23860348 | 1882 | /* Clear for later iterations. */ |
c906108c SS |
1883 | startflag = 0; |
1884 | /* Setup to resume next batch of thread references, set nextthread. */ | |
1885 | if (result_count >= 1) | |
1886 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |
1887 | i = 0; | |
1888 | while (result_count--) | |
1889 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |
1890 | break; | |
1891 | } | |
1892 | return result; | |
1893 | } | |
1894 | ||
1895 | static int | |
fba45db2 | 1896 | remote_newthread_step (threadref *ref, void *context) |
c906108c | 1897 | { |
79d7f229 PA |
1898 | int pid = ptid_get_pid (inferior_ptid); |
1899 | ptid_t ptid = ptid_build (pid, 0, threadref_to_int (ref)); | |
39f77062 KB |
1900 | |
1901 | if (!in_thread_list (ptid)) | |
1902 | add_thread (ptid); | |
c906108c SS |
1903 | return 1; /* continue iterator */ |
1904 | } | |
1905 | ||
1906 | #define CRAZY_MAX_THREADS 1000 | |
1907 | ||
39f77062 KB |
1908 | static ptid_t |
1909 | remote_current_thread (ptid_t oldpid) | |
c906108c | 1910 | { |
d01949b6 | 1911 | struct remote_state *rs = get_remote_state (); |
79d7f229 PA |
1912 | char *p = rs->buf; |
1913 | int tid; | |
1914 | int pid; | |
c906108c SS |
1915 | |
1916 | putpkt ("qC"); | |
6d820c5c | 1917 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1918 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
79d7f229 PA |
1919 | { |
1920 | /* Use strtoul here, so we'll correctly parse values whose | |
1921 | highest bit is set. The protocol carries them as a simple | |
1922 | series of hex digits; in the absence of a sign, strtol will | |
1923 | see such values as positive numbers out of range for signed | |
1924 | 'long', and return LONG_MAX to indicate an overflow. */ | |
1925 | tid = strtoul (&rs->buf[2], NULL, 16); | |
1926 | pid = ptid_get_pid (oldpid); | |
1927 | return ptid_build (pid, 0, tid); | |
1928 | } | |
c906108c SS |
1929 | else |
1930 | return oldpid; | |
1931 | } | |
1932 | ||
802188a7 RM |
1933 | /* Find new threads for info threads command. |
1934 | * Original version, using John Metzler's thread protocol. | |
9d1f7ab2 | 1935 | */ |
cce74817 JM |
1936 | |
1937 | static void | |
fba45db2 | 1938 | remote_find_new_threads (void) |
c906108c | 1939 | { |
c5aa993b JM |
1940 | remote_threadlist_iterator (remote_newthread_step, 0, |
1941 | CRAZY_MAX_THREADS); | |
c906108c SS |
1942 | } |
1943 | ||
9d1f7ab2 MS |
1944 | /* |
1945 | * Find all threads for info threads command. | |
1946 | * Uses new thread protocol contributed by Cisco. | |
1947 | * Falls back and attempts to use the older method (above) | |
1948 | * if the target doesn't respond to the new method. | |
1949 | */ | |
1950 | ||
0f71a2f6 JM |
1951 | static void |
1952 | remote_threads_info (void) | |
1953 | { | |
d01949b6 | 1954 | struct remote_state *rs = get_remote_state (); |
085dd6e6 | 1955 | char *bufp; |
0f71a2f6 | 1956 | int tid; |
79d7f229 PA |
1957 | int pid; |
1958 | ptid_t new_thread; | |
0f71a2f6 JM |
1959 | |
1960 | if (remote_desc == 0) /* paranoia */ | |
8a3fe4f8 | 1961 | error (_("Command can only be used when connected to the remote target.")); |
0f71a2f6 | 1962 | |
9d1f7ab2 MS |
1963 | if (use_threadinfo_query) |
1964 | { | |
1965 | putpkt ("qfThreadInfo"); | |
6d820c5c | 1966 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1967 | bufp = rs->buf; |
9d1f7ab2 | 1968 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 1969 | { |
9d1f7ab2 MS |
1970 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
1971 | { | |
1972 | do | |
1973 | { | |
c273b20f JB |
1974 | /* Use strtoul here, so we'll correctly parse values |
1975 | whose highest bit is set. The protocol carries | |
1976 | them as a simple series of hex digits; in the | |
1977 | absence of a sign, strtol will see such values as | |
1978 | positive numbers out of range for signed 'long', | |
1979 | and return LONG_MAX to indicate an overflow. */ | |
1980 | tid = strtoul (bufp, &bufp, 16); | |
79d7f229 PA |
1981 | pid = ptid_get_pid (inferior_ptid); |
1982 | new_thread = ptid_build (pid, 0, tid); | |
1983 | if (tid != 0 && !in_thread_list (new_thread)) | |
1984 | add_thread (new_thread); | |
9d1f7ab2 MS |
1985 | } |
1986 | while (*bufp++ == ','); /* comma-separated list */ | |
1987 | putpkt ("qsThreadInfo"); | |
6d820c5c | 1988 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1989 | bufp = rs->buf; |
9d1f7ab2 MS |
1990 | } |
1991 | return; /* done */ | |
1992 | } | |
1993 | } | |
1994 | ||
23860348 | 1995 | /* Else fall back to old method based on jmetzler protocol. */ |
9d1f7ab2 MS |
1996 | use_threadinfo_query = 0; |
1997 | remote_find_new_threads (); | |
1998 | return; | |
1999 | } | |
2000 | ||
802188a7 | 2001 | /* |
9d1f7ab2 MS |
2002 | * Collect a descriptive string about the given thread. |
2003 | * The target may say anything it wants to about the thread | |
2004 | * (typically info about its blocked / runnable state, name, etc.). | |
2005 | * This string will appear in the info threads display. | |
802188a7 | 2006 | * |
9d1f7ab2 MS |
2007 | * Optional: targets are not required to implement this function. |
2008 | */ | |
2009 | ||
2010 | static char * | |
2011 | remote_threads_extra_info (struct thread_info *tp) | |
2012 | { | |
d01949b6 | 2013 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
2014 | int result; |
2015 | int set; | |
2016 | threadref id; | |
2017 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 2018 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
2019 | int n = 0; /* position in display_buf */ |
2020 | ||
2021 | if (remote_desc == 0) /* paranoia */ | |
8e65ff28 | 2022 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 2023 | _("remote_threads_extra_info")); |
9d1f7ab2 | 2024 | |
60e569b9 PA |
2025 | if (ptid_equal (tp->ptid, magic_null_ptid) |
2026 | || (ptid_get_pid (tp->ptid) != 0 && ptid_get_tid (tp->ptid) == 0)) | |
2027 | /* This is the main thread which was added by GDB. The remote | |
2028 | server doesn't know about it. */ | |
2029 | return NULL; | |
2030 | ||
9d1f7ab2 MS |
2031 | if (use_threadextra_query) |
2032 | { | |
79d7f229 PA |
2033 | xsnprintf (rs->buf, get_remote_packet_size (), "qThreadExtraInfo,%lx", |
2034 | ptid_get_tid (tp->ptid)); | |
2e9f7625 | 2035 | putpkt (rs->buf); |
6d820c5c | 2036 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2037 | if (rs->buf[0] != 0) |
9d1f7ab2 | 2038 | { |
2e9f7625 DJ |
2039 | n = min (strlen (rs->buf) / 2, sizeof (display_buf)); |
2040 | result = hex2bin (rs->buf, (gdb_byte *) display_buf, n); | |
30559e10 | 2041 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
2042 | return display_buf; |
2043 | } | |
0f71a2f6 | 2044 | } |
9d1f7ab2 MS |
2045 | |
2046 | /* If the above query fails, fall back to the old method. */ | |
2047 | use_threadextra_query = 0; | |
2048 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
2049 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
79d7f229 | 2050 | int_to_threadref (&id, ptid_get_tid (tp->ptid)); |
9d1f7ab2 MS |
2051 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
2052 | if (threadinfo.active) | |
0f71a2f6 | 2053 | { |
9d1f7ab2 | 2054 | if (*threadinfo.shortname) |
2bc416ba | 2055 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
ecbc58df | 2056 | " Name: %s,", threadinfo.shortname); |
9d1f7ab2 | 2057 | if (*threadinfo.display) |
2bc416ba | 2058 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 2059 | " State: %s,", threadinfo.display); |
9d1f7ab2 | 2060 | if (*threadinfo.more_display) |
2bc416ba | 2061 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 2062 | " Priority: %s", threadinfo.more_display); |
9d1f7ab2 MS |
2063 | |
2064 | if (n > 0) | |
c5aa993b | 2065 | { |
23860348 | 2066 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
2067 | if (',' == display_buf[n-1]) |
2068 | display_buf[n-1] = ' '; | |
2069 | return display_buf; | |
c5aa993b | 2070 | } |
0f71a2f6 | 2071 | } |
9d1f7ab2 | 2072 | return NULL; |
0f71a2f6 | 2073 | } |
c906108c | 2074 | \f |
c5aa993b | 2075 | |
24b06219 | 2076 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
2077 | |
2078 | static void | |
fba45db2 | 2079 | extended_remote_restart (void) |
c906108c | 2080 | { |
d01949b6 | 2081 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2082 | |
2083 | /* Send the restart command; for reasons I don't understand the | |
2084 | remote side really expects a number after the "R". */ | |
ea9c271d | 2085 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); |
6d820c5c | 2086 | putpkt (rs->buf); |
c906108c | 2087 | |
ad9a8f3f | 2088 | remote_fileio_reset (); |
c906108c SS |
2089 | } |
2090 | \f | |
2091 | /* Clean up connection to a remote debugger. */ | |
2092 | ||
c906108c | 2093 | static void |
fba45db2 | 2094 | remote_close (int quitting) |
c906108c SS |
2095 | { |
2096 | if (remote_desc) | |
2cd58942 | 2097 | serial_close (remote_desc); |
c906108c SS |
2098 | remote_desc = NULL; |
2099 | } | |
2100 | ||
23860348 | 2101 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
2102 | |
2103 | static void | |
fba45db2 | 2104 | get_offsets (void) |
c906108c | 2105 | { |
d01949b6 | 2106 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 2107 | char *buf; |
085dd6e6 | 2108 | char *ptr; |
31d99776 DJ |
2109 | int lose, num_segments = 0, do_sections, do_segments; |
2110 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
c906108c | 2111 | struct section_offsets *offs; |
31d99776 DJ |
2112 | struct symfile_segment_data *data; |
2113 | ||
2114 | if (symfile_objfile == NULL) | |
2115 | return; | |
c906108c SS |
2116 | |
2117 | putpkt ("qOffsets"); | |
6d820c5c | 2118 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2119 | buf = rs->buf; |
c906108c SS |
2120 | |
2121 | if (buf[0] == '\000') | |
2122 | return; /* Return silently. Stub doesn't support | |
23860348 | 2123 | this command. */ |
c906108c SS |
2124 | if (buf[0] == 'E') |
2125 | { | |
8a3fe4f8 | 2126 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
2127 | return; |
2128 | } | |
2129 | ||
2130 | /* Pick up each field in turn. This used to be done with scanf, but | |
2131 | scanf will make trouble if CORE_ADDR size doesn't match | |
2132 | conversion directives correctly. The following code will work | |
2133 | with any size of CORE_ADDR. */ | |
2134 | text_addr = data_addr = bss_addr = 0; | |
2135 | ptr = buf; | |
2136 | lose = 0; | |
2137 | ||
2138 | if (strncmp (ptr, "Text=", 5) == 0) | |
2139 | { | |
2140 | ptr += 5; | |
2141 | /* Don't use strtol, could lose on big values. */ | |
2142 | while (*ptr && *ptr != ';') | |
2143 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 2144 | |
31d99776 DJ |
2145 | if (strncmp (ptr, ";Data=", 6) == 0) |
2146 | { | |
2147 | ptr += 6; | |
2148 | while (*ptr && *ptr != ';') | |
2149 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
2150 | } | |
2151 | else | |
2152 | lose = 1; | |
2153 | ||
2154 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
2155 | { | |
2156 | ptr += 5; | |
2157 | while (*ptr && *ptr != ';') | |
2158 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 2159 | |
31d99776 DJ |
2160 | if (bss_addr != data_addr) |
2161 | warning (_("Target reported unsupported offsets: %s"), buf); | |
2162 | } | |
2163 | else | |
2164 | lose = 1; | |
2165 | } | |
2166 | else if (strncmp (ptr, "TextSeg=", 8) == 0) | |
c906108c | 2167 | { |
31d99776 DJ |
2168 | ptr += 8; |
2169 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 2170 | while (*ptr && *ptr != ';') |
31d99776 DJ |
2171 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
2172 | num_segments = 1; | |
2173 | ||
2174 | if (strncmp (ptr, ";DataSeg=", 9) == 0) | |
2175 | { | |
2176 | ptr += 9; | |
2177 | while (*ptr && *ptr != ';') | |
2178 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
2179 | num_segments++; | |
2180 | } | |
c906108c SS |
2181 | } |
2182 | else | |
2183 | lose = 1; | |
2184 | ||
2185 | if (lose) | |
8a3fe4f8 | 2186 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
2187 | else if (*ptr != '\0') |
2188 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 2189 | |
802188a7 | 2190 | offs = ((struct section_offsets *) |
a39a16c4 | 2191 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 2192 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 2193 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 2194 | |
31d99776 DJ |
2195 | data = get_symfile_segment_data (symfile_objfile->obfd); |
2196 | do_segments = (data != NULL); | |
2197 | do_sections = num_segments == 0; | |
c906108c | 2198 | |
28c32713 | 2199 | if (num_segments > 0) |
31d99776 | 2200 | { |
31d99776 DJ |
2201 | segments[0] = text_addr; |
2202 | segments[1] = data_addr; | |
2203 | } | |
28c32713 JB |
2204 | /* If we have two segments, we can still try to relocate everything |
2205 | by assuming that the .text and .data offsets apply to the whole | |
2206 | text and data segments. Convert the offsets given in the packet | |
2207 | to base addresses for symfile_map_offsets_to_segments. */ | |
2208 | else if (data && data->num_segments == 2) | |
2209 | { | |
2210 | segments[0] = data->segment_bases[0] + text_addr; | |
2211 | segments[1] = data->segment_bases[1] + data_addr; | |
2212 | num_segments = 2; | |
2213 | } | |
8d385431 DJ |
2214 | /* If the object file has only one segment, assume that it is text |
2215 | rather than data; main programs with no writable data are rare, | |
2216 | but programs with no code are useless. Of course the code might | |
2217 | have ended up in the data segment... to detect that we would need | |
2218 | the permissions here. */ | |
2219 | else if (data && data->num_segments == 1) | |
2220 | { | |
2221 | segments[0] = data->segment_bases[0] + text_addr; | |
2222 | num_segments = 1; | |
2223 | } | |
28c32713 JB |
2224 | /* There's no way to relocate by segment. */ |
2225 | else | |
2226 | do_segments = 0; | |
31d99776 DJ |
2227 | |
2228 | if (do_segments) | |
2229 | { | |
2230 | int ret = symfile_map_offsets_to_segments (symfile_objfile->obfd, data, | |
2231 | offs, num_segments, segments); | |
2232 | ||
2233 | if (ret == 0 && !do_sections) | |
2234 | error (_("Can not handle qOffsets TextSeg response with this symbol file")); | |
2235 | ||
2236 | if (ret > 0) | |
2237 | do_sections = 0; | |
2238 | } | |
c906108c | 2239 | |
9ef895d6 DJ |
2240 | if (data) |
2241 | free_symfile_segment_data (data); | |
31d99776 DJ |
2242 | |
2243 | if (do_sections) | |
2244 | { | |
2245 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; | |
2246 | ||
2247 | /* This is a temporary kludge to force data and bss to use the same offsets | |
2248 | because that's what nlmconv does now. The real solution requires changes | |
2249 | to the stub and remote.c that I don't have time to do right now. */ | |
2250 | ||
2251 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; | |
2252 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
2253 | } | |
c906108c SS |
2254 | |
2255 | objfile_relocate (symfile_objfile, offs); | |
2256 | } | |
2257 | ||
8621d6a9 | 2258 | /* Stub for catch_exception. */ |
0f71a2f6 | 2259 | |
2d717e4f DJ |
2260 | struct start_remote_args |
2261 | { | |
2262 | int from_tty; | |
2263 | ||
2264 | /* The current target. */ | |
2265 | struct target_ops *target; | |
2266 | ||
2267 | /* Non-zero if this is an extended-remote target. */ | |
2268 | int extended_p; | |
2269 | }; | |
2270 | ||
9cbc821d | 2271 | static void |
2d717e4f | 2272 | remote_start_remote (struct ui_out *uiout, void *opaque) |
c906108c | 2273 | { |
2d717e4f DJ |
2274 | struct remote_state *rs = get_remote_state (); |
2275 | struct start_remote_args *args = opaque; | |
2276 | char *wait_status = NULL; | |
8621d6a9 | 2277 | |
23860348 | 2278 | immediate_quit++; /* Allow user to interrupt it. */ |
c906108c | 2279 | |
2d717e4f DJ |
2280 | /* Check whether the target is running now. */ |
2281 | putpkt ("?"); | |
2282 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2283 | ||
2284 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') | |
2285 | { | |
2286 | if (args->extended_p) | |
2287 | { | |
2288 | /* We're connected, but not running. Drop out before we | |
2289 | call start_remote. */ | |
2290 | target_mark_exited (args->target); | |
2291 | return; | |
2292 | } | |
2293 | else | |
2294 | error (_("The target is not running (try extended-remote?)")); | |
2295 | } | |
2296 | else | |
2297 | { | |
2298 | if (args->extended_p) | |
2299 | target_mark_running (args->target); | |
2300 | ||
2301 | /* Save the reply for later. */ | |
2302 | wait_status = alloca (strlen (rs->buf) + 1); | |
2303 | strcpy (wait_status, rs->buf); | |
2304 | } | |
2305 | ||
c0a2216e PA |
2306 | /* Start afresh. */ |
2307 | init_thread_list (); | |
2308 | ||
c906108c | 2309 | /* Let the stub know that we want it to return the thread. */ |
79d7f229 | 2310 | set_continue_thread (minus_one_ptid); |
c906108c | 2311 | |
2d717e4f DJ |
2312 | /* Without this, some commands which require an active target |
2313 | (such as kill) won't work. This variable serves (at least) | |
2314 | double duty as both the pid of the target process (if it has | |
2315 | such), and as a flag indicating that a target is active. | |
2316 | These functions should be split out into seperate variables, | |
2317 | especially since GDB will someday have a notion of debugging | |
2318 | several processes. */ | |
79d7f229 | 2319 | inferior_ptid = magic_null_ptid; |
2d717e4f DJ |
2320 | |
2321 | /* Now, if we have thread information, update inferior_ptid. */ | |
39f77062 | 2322 | inferior_ptid = remote_current_thread (inferior_ptid); |
c906108c | 2323 | |
c0a2216e PA |
2324 | /* Always add the main thread. */ |
2325 | add_thread_silent (inferior_ptid); | |
2326 | ||
23860348 | 2327 | get_offsets (); /* Get text, data & bss offsets. */ |
c906108c | 2328 | |
2d717e4f DJ |
2329 | /* Use the previously fetched status. */ |
2330 | gdb_assert (wait_status != NULL); | |
2331 | strcpy (rs->buf, wait_status); | |
2332 | rs->cached_wait_status = 1; | |
c906108c | 2333 | |
2d717e4f DJ |
2334 | immediate_quit--; |
2335 | start_remote (args->from_tty); /* Initialize gdb process mechanisms. */ | |
c906108c SS |
2336 | } |
2337 | ||
2338 | /* Open a connection to a remote debugger. | |
2339 | NAME is the filename used for communication. */ | |
2340 | ||
2341 | static void | |
fba45db2 | 2342 | remote_open (char *name, int from_tty) |
c906108c | 2343 | { |
75c99385 | 2344 | remote_open_1 (name, from_tty, &remote_ops, 0); |
43ff13b4 JM |
2345 | } |
2346 | ||
c906108c SS |
2347 | /* Open a connection to a remote debugger using the extended |
2348 | remote gdb protocol. NAME is the filename used for communication. */ | |
2349 | ||
2350 | static void | |
fba45db2 | 2351 | extended_remote_open (char *name, int from_tty) |
c906108c | 2352 | { |
75c99385 | 2353 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */); |
43ff13b4 JM |
2354 | } |
2355 | ||
c906108c SS |
2356 | /* Generic code for opening a connection to a remote target. */ |
2357 | ||
d471ea57 AC |
2358 | static void |
2359 | init_all_packet_configs (void) | |
2360 | { | |
2361 | int i; | |
444abaca DJ |
2362 | for (i = 0; i < PACKET_MAX; i++) |
2363 | update_packet_config (&remote_protocol_packets[i]); | |
d471ea57 AC |
2364 | } |
2365 | ||
23860348 | 2366 | /* Symbol look-up. */ |
dc8acb97 MS |
2367 | |
2368 | static void | |
2369 | remote_check_symbols (struct objfile *objfile) | |
2370 | { | |
d01949b6 | 2371 | struct remote_state *rs = get_remote_state (); |
dc8acb97 MS |
2372 | char *msg, *reply, *tmp; |
2373 | struct minimal_symbol *sym; | |
2374 | int end; | |
2375 | ||
444abaca | 2376 | if (remote_protocol_packets[PACKET_qSymbol].support == PACKET_DISABLE) |
dc8acb97 MS |
2377 | return; |
2378 | ||
6d820c5c DJ |
2379 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
2380 | because we need both at the same time. */ | |
ea9c271d | 2381 | msg = alloca (get_remote_packet_size ()); |
6d820c5c | 2382 | |
23860348 | 2383 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
2384 | |
2385 | putpkt ("qSymbol::"); | |
6d820c5c DJ |
2386 | getpkt (&rs->buf, &rs->buf_size, 0); |
2387 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSymbol]); | |
2e9f7625 | 2388 | reply = rs->buf; |
dc8acb97 MS |
2389 | |
2390 | while (strncmp (reply, "qSymbol:", 8) == 0) | |
2391 | { | |
2392 | tmp = &reply[8]; | |
cfd77fa1 | 2393 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
2394 | msg[end] = '\0'; |
2395 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
2396 | if (sym == NULL) | |
ea9c271d | 2397 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
dc8acb97 | 2398 | else |
2bbe3cc1 DJ |
2399 | { |
2400 | CORE_ADDR sym_addr = SYMBOL_VALUE_ADDRESS (sym); | |
2401 | ||
2402 | /* If this is a function address, return the start of code | |
2403 | instead of any data function descriptor. */ | |
1cf3db46 | 2404 | sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch, |
2bbe3cc1 DJ |
2405 | sym_addr, |
2406 | ¤t_target); | |
2407 | ||
2408 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", | |
2409 | paddr_nz (sym_addr), &reply[8]); | |
2410 | } | |
2411 | ||
dc8acb97 | 2412 | putpkt (msg); |
6d820c5c | 2413 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2414 | reply = rs->buf; |
dc8acb97 MS |
2415 | } |
2416 | } | |
2417 | ||
9db8d71f DJ |
2418 | static struct serial * |
2419 | remote_serial_open (char *name) | |
2420 | { | |
2421 | static int udp_warning = 0; | |
2422 | ||
2423 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
2424 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
2425 | serial connection is reliable and not the serial connection promising | |
2426 | to be. */ | |
2427 | if (!udp_warning && strncmp (name, "udp:", 4) == 0) | |
2428 | { | |
8a3fe4f8 AC |
2429 | warning (_("\ |
2430 | The remote protocol may be unreliable over UDP.\n\ | |
2431 | Some events may be lost, rendering further debugging impossible.")); | |
9db8d71f DJ |
2432 | udp_warning = 1; |
2433 | } | |
2434 | ||
2435 | return serial_open (name); | |
2436 | } | |
2437 | ||
be2a5f71 DJ |
2438 | /* This type describes each known response to the qSupported |
2439 | packet. */ | |
2440 | struct protocol_feature | |
2441 | { | |
2442 | /* The name of this protocol feature. */ | |
2443 | const char *name; | |
2444 | ||
2445 | /* The default for this protocol feature. */ | |
2446 | enum packet_support default_support; | |
2447 | ||
2448 | /* The function to call when this feature is reported, or after | |
2449 | qSupported processing if the feature is not supported. | |
2450 | The first argument points to this structure. The second | |
2451 | argument indicates whether the packet requested support be | |
2452 | enabled, disabled, or probed (or the default, if this function | |
2453 | is being called at the end of processing and this feature was | |
2454 | not reported). The third argument may be NULL; if not NULL, it | |
2455 | is a NUL-terminated string taken from the packet following | |
2456 | this feature's name and an equals sign. */ | |
2457 | void (*func) (const struct protocol_feature *, enum packet_support, | |
2458 | const char *); | |
2459 | ||
2460 | /* The corresponding packet for this feature. Only used if | |
2461 | FUNC is remote_supported_packet. */ | |
2462 | int packet; | |
2463 | }; | |
2464 | ||
be2a5f71 DJ |
2465 | static void |
2466 | remote_supported_packet (const struct protocol_feature *feature, | |
2467 | enum packet_support support, | |
2468 | const char *argument) | |
2469 | { | |
2470 | if (argument) | |
2471 | { | |
2472 | warning (_("Remote qSupported response supplied an unexpected value for" | |
2473 | " \"%s\"."), feature->name); | |
2474 | return; | |
2475 | } | |
2476 | ||
2477 | if (remote_protocol_packets[feature->packet].support | |
2478 | == PACKET_SUPPORT_UNKNOWN) | |
2479 | remote_protocol_packets[feature->packet].support = support; | |
2480 | } | |
be2a5f71 DJ |
2481 | |
2482 | static void | |
2483 | remote_packet_size (const struct protocol_feature *feature, | |
2484 | enum packet_support support, const char *value) | |
2485 | { | |
2486 | struct remote_state *rs = get_remote_state (); | |
2487 | ||
2488 | int packet_size; | |
2489 | char *value_end; | |
2490 | ||
2491 | if (support != PACKET_ENABLE) | |
2492 | return; | |
2493 | ||
2494 | if (value == NULL || *value == '\0') | |
2495 | { | |
2496 | warning (_("Remote target reported \"%s\" without a size."), | |
2497 | feature->name); | |
2498 | return; | |
2499 | } | |
2500 | ||
2501 | errno = 0; | |
2502 | packet_size = strtol (value, &value_end, 16); | |
2503 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
2504 | { | |
2505 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
2506 | feature->name, value); | |
2507 | return; | |
2508 | } | |
2509 | ||
2510 | if (packet_size > MAX_REMOTE_PACKET_SIZE) | |
2511 | { | |
2512 | warning (_("limiting remote suggested packet size (%d bytes) to %d"), | |
2513 | packet_size, MAX_REMOTE_PACKET_SIZE); | |
2514 | packet_size = MAX_REMOTE_PACKET_SIZE; | |
2515 | } | |
2516 | ||
2517 | /* Record the new maximum packet size. */ | |
2518 | rs->explicit_packet_size = packet_size; | |
2519 | } | |
2520 | ||
2521 | static struct protocol_feature remote_protocol_features[] = { | |
0876f84a | 2522 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 2523 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 2524 | PACKET_qXfer_auxv }, |
23181151 DJ |
2525 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
2526 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
2527 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
2528 | PACKET_qXfer_libraries }, | |
fd79ecee | 2529 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 2530 | PACKET_qXfer_memory_map }, |
4de6483e UW |
2531 | { "qXfer:spu:read", PACKET_DISABLE, remote_supported_packet, |
2532 | PACKET_qXfer_spu_read }, | |
2533 | { "qXfer:spu:write", PACKET_DISABLE, remote_supported_packet, | |
2534 | PACKET_qXfer_spu_write }, | |
89be2091 DJ |
2535 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
2536 | PACKET_QPassSignals }, | |
a6f3e723 SL |
2537 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
2538 | PACKET_QStartNoAckMode }, | |
be2a5f71 DJ |
2539 | }; |
2540 | ||
2541 | static void | |
2542 | remote_query_supported (void) | |
2543 | { | |
2544 | struct remote_state *rs = get_remote_state (); | |
2545 | char *next; | |
2546 | int i; | |
2547 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
2548 | ||
2549 | /* The packet support flags are handled differently for this packet | |
2550 | than for most others. We treat an error, a disabled packet, and | |
2551 | an empty response identically: any features which must be reported | |
2552 | to be used will be automatically disabled. An empty buffer | |
2553 | accomplishes this, since that is also the representation for a list | |
2554 | containing no features. */ | |
2555 | ||
2556 | rs->buf[0] = 0; | |
2557 | if (remote_protocol_packets[PACKET_qSupported].support != PACKET_DISABLE) | |
2558 | { | |
2559 | putpkt ("qSupported"); | |
2560 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2561 | ||
2562 | /* If an error occured, warn, but do not return - just reset the | |
2563 | buffer to empty and go on to disable features. */ | |
2564 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
2565 | == PACKET_ERROR) | |
2566 | { | |
2567 | warning (_("Remote failure reply: %s"), rs->buf); | |
2568 | rs->buf[0] = 0; | |
2569 | } | |
2570 | } | |
2571 | ||
2572 | memset (seen, 0, sizeof (seen)); | |
2573 | ||
2574 | next = rs->buf; | |
2575 | while (*next) | |
2576 | { | |
2577 | enum packet_support is_supported; | |
2578 | char *p, *end, *name_end, *value; | |
2579 | ||
2580 | /* First separate out this item from the rest of the packet. If | |
2581 | there's another item after this, we overwrite the separator | |
2582 | (terminated strings are much easier to work with). */ | |
2583 | p = next; | |
2584 | end = strchr (p, ';'); | |
2585 | if (end == NULL) | |
2586 | { | |
2587 | end = p + strlen (p); | |
2588 | next = end; | |
2589 | } | |
2590 | else | |
2591 | { | |
89be2091 DJ |
2592 | *end = '\0'; |
2593 | next = end + 1; | |
2594 | ||
be2a5f71 DJ |
2595 | if (end == p) |
2596 | { | |
2597 | warning (_("empty item in \"qSupported\" response")); | |
2598 | continue; | |
2599 | } | |
be2a5f71 DJ |
2600 | } |
2601 | ||
2602 | name_end = strchr (p, '='); | |
2603 | if (name_end) | |
2604 | { | |
2605 | /* This is a name=value entry. */ | |
2606 | is_supported = PACKET_ENABLE; | |
2607 | value = name_end + 1; | |
2608 | *name_end = '\0'; | |
2609 | } | |
2610 | else | |
2611 | { | |
2612 | value = NULL; | |
2613 | switch (end[-1]) | |
2614 | { | |
2615 | case '+': | |
2616 | is_supported = PACKET_ENABLE; | |
2617 | break; | |
2618 | ||
2619 | case '-': | |
2620 | is_supported = PACKET_DISABLE; | |
2621 | break; | |
2622 | ||
2623 | case '?': | |
2624 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
2625 | break; | |
2626 | ||
2627 | default: | |
2628 | warning (_("unrecognized item \"%s\" in \"qSupported\" response"), p); | |
2629 | continue; | |
2630 | } | |
2631 | end[-1] = '\0'; | |
2632 | } | |
2633 | ||
2634 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
2635 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
2636 | { | |
2637 | const struct protocol_feature *feature; | |
2638 | ||
2639 | seen[i] = 1; | |
2640 | feature = &remote_protocol_features[i]; | |
2641 | feature->func (feature, is_supported, value); | |
2642 | break; | |
2643 | } | |
2644 | } | |
2645 | ||
2646 | /* If we increased the packet size, make sure to increase the global | |
2647 | buffer size also. We delay this until after parsing the entire | |
2648 | qSupported packet, because this is the same buffer we were | |
2649 | parsing. */ | |
2650 | if (rs->buf_size < rs->explicit_packet_size) | |
2651 | { | |
2652 | rs->buf_size = rs->explicit_packet_size; | |
2653 | rs->buf = xrealloc (rs->buf, rs->buf_size); | |
2654 | } | |
2655 | ||
2656 | /* Handle the defaults for unmentioned features. */ | |
2657 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
2658 | if (!seen[i]) | |
2659 | { | |
2660 | const struct protocol_feature *feature; | |
2661 | ||
2662 | feature = &remote_protocol_features[i]; | |
2663 | feature->func (feature, feature->default_support, NULL); | |
2664 | } | |
2665 | } | |
2666 | ||
2667 | ||
c906108c | 2668 | static void |
75c99385 | 2669 | remote_open_1 (char *name, int from_tty, struct target_ops *target, int extended_p) |
c906108c | 2670 | { |
d01949b6 | 2671 | struct remote_state *rs = get_remote_state (); |
a6f3e723 SL |
2672 | struct packet_config *noack_config; |
2673 | ||
c906108c | 2674 | if (name == 0) |
8a3fe4f8 | 2675 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 2676 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 2677 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 2678 | |
23860348 | 2679 | /* See FIXME above. */ |
c6ebd6cf | 2680 | if (!target_async_permitted) |
92d1e331 | 2681 | wait_forever_enabled_p = 1; |
6426a772 | 2682 | |
2d717e4f DJ |
2683 | /* If we're connected to a running target, target_preopen will kill it. |
2684 | But if we're connected to a target system with no running process, | |
2685 | then we will still be connected when it returns. Ask this question | |
2686 | first, before target_preopen has a chance to kill anything. */ | |
2687 | if (remote_desc != NULL && !target_has_execution) | |
2688 | { | |
2689 | if (!from_tty | |
2690 | || query (_("Already connected to a remote target. Disconnect? "))) | |
2691 | pop_target (); | |
2692 | else | |
2693 | error (_("Still connected.")); | |
2694 | } | |
2695 | ||
c906108c SS |
2696 | target_preopen (from_tty); |
2697 | ||
2698 | unpush_target (target); | |
2699 | ||
2d717e4f DJ |
2700 | /* This time without a query. If we were connected to an |
2701 | extended-remote target and target_preopen killed the running | |
2702 | process, we may still be connected. If we are starting "target | |
2703 | remote" now, the extended-remote target will not have been | |
2704 | removed by unpush_target. */ | |
2705 | if (remote_desc != NULL && !target_has_execution) | |
2706 | pop_target (); | |
2707 | ||
89be2091 DJ |
2708 | /* Make sure we send the passed signals list the next time we resume. */ |
2709 | xfree (last_pass_packet); | |
2710 | last_pass_packet = NULL; | |
2711 | ||
ad9a8f3f | 2712 | remote_fileio_reset (); |
1dd41f16 NS |
2713 | reopen_exec_file (); |
2714 | reread_symbols (); | |
2715 | ||
9db8d71f | 2716 | remote_desc = remote_serial_open (name); |
c906108c SS |
2717 | if (!remote_desc) |
2718 | perror_with_name (name); | |
2719 | ||
2720 | if (baud_rate != -1) | |
2721 | { | |
2cd58942 | 2722 | if (serial_setbaudrate (remote_desc, baud_rate)) |
c906108c | 2723 | { |
9b74d5d3 KB |
2724 | /* The requested speed could not be set. Error out to |
2725 | top level after closing remote_desc. Take care to | |
2726 | set remote_desc to NULL to avoid closing remote_desc | |
2727 | more than once. */ | |
2cd58942 | 2728 | serial_close (remote_desc); |
9b74d5d3 | 2729 | remote_desc = NULL; |
c906108c SS |
2730 | perror_with_name (name); |
2731 | } | |
2732 | } | |
2733 | ||
2cd58942 | 2734 | serial_raw (remote_desc); |
c906108c SS |
2735 | |
2736 | /* If there is something sitting in the buffer we might take it as a | |
2737 | response to a command, which would be bad. */ | |
2cd58942 | 2738 | serial_flush_input (remote_desc); |
c906108c SS |
2739 | |
2740 | if (from_tty) | |
2741 | { | |
2742 | puts_filtered ("Remote debugging using "); | |
2743 | puts_filtered (name); | |
2744 | puts_filtered ("\n"); | |
2745 | } | |
23860348 | 2746 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 2747 | |
2d717e4f DJ |
2748 | /* Assume that the target is running, unless we learn otherwise. */ |
2749 | target_mark_running (target); | |
2750 | ||
be2a5f71 DJ |
2751 | /* Reset the target state; these things will be queried either by |
2752 | remote_query_supported or as they are needed. */ | |
d471ea57 | 2753 | init_all_packet_configs (); |
be2a5f71 | 2754 | rs->explicit_packet_size = 0; |
a6f3e723 | 2755 | rs->noack_mode = 0; |
802188a7 | 2756 | |
79d7f229 PA |
2757 | general_thread = not_sent_ptid; |
2758 | continue_thread = not_sent_ptid; | |
c906108c | 2759 | |
9d1f7ab2 MS |
2760 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
2761 | use_threadinfo_query = 1; | |
2762 | use_threadextra_query = 1; | |
2763 | ||
a6f3e723 SL |
2764 | /* Ack any packet which the remote side has already sent. */ |
2765 | serial_write (remote_desc, "+", 1); | |
2766 | ||
be2a5f71 DJ |
2767 | /* The first packet we send to the target is the optional "supported |
2768 | packets" request. If the target can answer this, it will tell us | |
2769 | which later probes to skip. */ | |
2770 | remote_query_supported (); | |
2771 | ||
a6f3e723 SL |
2772 | /* Next, we possibly activate noack mode. |
2773 | ||
2774 | If the QStartNoAckMode packet configuration is set to AUTO, | |
2775 | enable noack mode if the stub reported a wish for it with | |
2776 | qSupported. | |
2777 | ||
2778 | If set to TRUE, then enable noack mode even if the stub didn't | |
2779 | report it in qSupported. If the stub doesn't reply OK, the | |
2780 | session ends with an error. | |
2781 | ||
2782 | If FALSE, then don't activate noack mode, regardless of what the | |
2783 | stub claimed should be the default with qSupported. */ | |
2784 | ||
2785 | noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode]; | |
2786 | ||
2787 | if (noack_config->detect == AUTO_BOOLEAN_TRUE | |
2788 | || (noack_config->detect == AUTO_BOOLEAN_AUTO | |
2789 | && noack_config->support == PACKET_ENABLE)) | |
2790 | { | |
2791 | putpkt ("QStartNoAckMode"); | |
2792 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2793 | if (packet_ok (rs->buf, noack_config) == PACKET_OK) | |
2794 | rs->noack_mode = 1; | |
2795 | } | |
2796 | ||
424163ea DJ |
2797 | /* Next, if the target can specify a description, read it. We do |
2798 | this before anything involving memory or registers. */ | |
2799 | target_find_description (); | |
2800 | ||
c6ebd6cf | 2801 | if (target_async_permitted) |
92d1e331 | 2802 | { |
23860348 | 2803 | /* With this target we start out by owning the terminal. */ |
92d1e331 DJ |
2804 | remote_async_terminal_ours_p = 1; |
2805 | ||
2806 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
2807 | assumed that the target is already ready and able to respond to | |
2808 | requests. Unfortunately remote_start_remote() eventually calls | |
2809 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets | |
2810 | around this. Eventually a mechanism that allows | |
2811 | wait_for_inferior() to expect/get timeouts will be | |
23860348 | 2812 | implemented. */ |
92d1e331 DJ |
2813 | wait_forever_enabled_p = 0; |
2814 | } | |
2815 | ||
23860348 | 2816 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 2817 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 2818 | |
36918e70 | 2819 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
2820 | target (we'd otherwise be in an inconsistent state) and then |
2821 | propogate the error on up the exception chain. This ensures that | |
2822 | the caller doesn't stumble along blindly assuming that the | |
2823 | function succeeded. The CLI doesn't have this problem but other | |
2824 | UI's, such as MI do. | |
36918e70 AC |
2825 | |
2826 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
2827 | this function should return an error indication letting the | |
ce2826aa | 2828 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
2829 | ``target remote'' is directly wired to this function making that |
2830 | impossible. On a positive note, the CLI side of this problem has | |
2831 | been fixed - the function set_cmd_context() makes it possible for | |
2832 | all the ``target ....'' commands to share a common callback | |
2833 | function. See cli-dump.c. */ | |
109c3e39 | 2834 | { |
2d717e4f DJ |
2835 | struct gdb_exception ex; |
2836 | struct start_remote_args args; | |
2837 | ||
2838 | args.from_tty = from_tty; | |
2839 | args.target = target; | |
2840 | args.extended_p = extended_p; | |
2841 | ||
2842 | ex = catch_exception (uiout, remote_start_remote, &args, RETURN_MASK_ALL); | |
109c3e39 AC |
2843 | if (ex.reason < 0) |
2844 | { | |
2845 | pop_target (); | |
c6ebd6cf | 2846 | if (target_async_permitted) |
109c3e39 AC |
2847 | wait_forever_enabled_p = 1; |
2848 | throw_exception (ex); | |
2849 | } | |
2850 | } | |
c906108c | 2851 | |
c6ebd6cf | 2852 | if (target_async_permitted) |
92d1e331 | 2853 | wait_forever_enabled_p = 1; |
6426a772 JM |
2854 | |
2855 | if (extended_p) | |
43ff13b4 | 2856 | { |
6240bebf | 2857 | /* Tell the remote that we are using the extended protocol. */ |
6426a772 | 2858 | putpkt ("!"); |
6d820c5c | 2859 | getpkt (&rs->buf, &rs->buf_size, 0); |
43ff13b4 | 2860 | } |
a77053c2 | 2861 | |
2d717e4f DJ |
2862 | /* If we connected to a live target, do some additional setup. */ |
2863 | if (target_has_execution) | |
2864 | { | |
2865 | if (exec_bfd) /* No use without an exec file. */ | |
2866 | remote_check_symbols (symfile_objfile); | |
2867 | } | |
43ff13b4 JM |
2868 | } |
2869 | ||
c906108c SS |
2870 | /* This takes a program previously attached to and detaches it. After |
2871 | this is done, GDB can be used to debug some other program. We | |
2872 | better not have left any breakpoints in the target program or it'll | |
2873 | die when it hits one. */ | |
2874 | ||
2875 | static void | |
2d717e4f | 2876 | remote_detach_1 (char *args, int from_tty, int extended) |
c906108c | 2877 | { |
d01949b6 | 2878 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2879 | |
2880 | if (args) | |
8a3fe4f8 | 2881 | error (_("Argument given to \"detach\" when remotely debugging.")); |
c906108c | 2882 | |
2d717e4f DJ |
2883 | if (!target_has_execution) |
2884 | error (_("No process to detach from.")); | |
2885 | ||
c906108c | 2886 | /* Tell the remote target to detach. */ |
6d820c5c | 2887 | strcpy (rs->buf, "D"); |
4ddda9b5 PA |
2888 | putpkt (rs->buf); |
2889 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2890 | ||
2891 | if (rs->buf[0] == 'E') | |
2892 | error (_("Can't detach process.")); | |
c906108c | 2893 | |
23860348 | 2894 | /* Unregister the file descriptor from the event loop. */ |
6ad8ae5c DJ |
2895 | if (target_is_async_p ()) |
2896 | serial_async (remote_desc, NULL, 0); | |
2897 | ||
cca728d0 | 2898 | target_mourn_inferior (); |
c906108c | 2899 | if (from_tty) |
2d717e4f DJ |
2900 | { |
2901 | if (extended) | |
2902 | puts_filtered ("Detached from remote process.\n"); | |
2903 | else | |
2904 | puts_filtered ("Ending remote debugging.\n"); | |
2905 | } | |
2906 | } | |
2907 | ||
2908 | static void | |
2909 | remote_detach (char *args, int from_tty) | |
2910 | { | |
2911 | remote_detach_1 (args, from_tty, 0); | |
2912 | } | |
2913 | ||
2914 | static void | |
2915 | extended_remote_detach (char *args, int from_tty) | |
2916 | { | |
2917 | remote_detach_1 (args, from_tty, 1); | |
c906108c SS |
2918 | } |
2919 | ||
6ad8ae5c DJ |
2920 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
2921 | ||
43ff13b4 | 2922 | static void |
597320e7 | 2923 | remote_disconnect (struct target_ops *target, char *args, int from_tty) |
43ff13b4 | 2924 | { |
43ff13b4 | 2925 | if (args) |
2d717e4f | 2926 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 2927 | |
23860348 | 2928 | /* Unregister the file descriptor from the event loop. */ |
ed9a39eb | 2929 | if (target_is_async_p ()) |
2cd58942 | 2930 | serial_async (remote_desc, NULL, 0); |
43ff13b4 | 2931 | |
2d717e4f DJ |
2932 | /* Make sure we unpush even the extended remote targets; mourn |
2933 | won't do it. So call remote_mourn_1 directly instead of | |
2934 | target_mourn_inferior. */ | |
2935 | remote_mourn_1 (target); | |
2936 | ||
43ff13b4 JM |
2937 | if (from_tty) |
2938 | puts_filtered ("Ending remote debugging.\n"); | |
2939 | } | |
2940 | ||
2d717e4f DJ |
2941 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
2942 | be chatty about it. */ | |
2943 | ||
2944 | static void | |
2945 | extended_remote_attach_1 (struct target_ops *target, char *args, int from_tty) | |
2946 | { | |
2947 | struct remote_state *rs = get_remote_state (); | |
be86555c | 2948 | int pid; |
2d717e4f | 2949 | char *dummy; |
96ef3384 | 2950 | char *wait_status = NULL; |
2d717e4f DJ |
2951 | |
2952 | if (!args) | |
2953 | error_no_arg (_("process-id to attach")); | |
2954 | ||
2955 | dummy = args; | |
2956 | pid = strtol (args, &dummy, 0); | |
2957 | /* Some targets don't set errno on errors, grrr! */ | |
2958 | if (pid == 0 && args == dummy) | |
2959 | error (_("Illegal process-id: %s."), args); | |
2960 | ||
2961 | if (remote_protocol_packets[PACKET_vAttach].support == PACKET_DISABLE) | |
2962 | error (_("This target does not support attaching to a process")); | |
2963 | ||
2964 | sprintf (rs->buf, "vAttach;%x", pid); | |
2965 | putpkt (rs->buf); | |
2966 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2967 | ||
2968 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vAttach]) == PACKET_OK) | |
2969 | { | |
2970 | if (from_tty) | |
2971 | printf_unfiltered (_("Attached to %s\n"), | |
2972 | target_pid_to_str (pid_to_ptid (pid))); | |
2973 | ||
96ef3384 UW |
2974 | /* Save the reply for later. */ |
2975 | wait_status = alloca (strlen (rs->buf) + 1); | |
2976 | strcpy (wait_status, rs->buf); | |
2d717e4f DJ |
2977 | } |
2978 | else if (remote_protocol_packets[PACKET_vAttach].support == PACKET_DISABLE) | |
2979 | error (_("This target does not support attaching to a process")); | |
2980 | else | |
2981 | error (_("Attaching to %s failed"), | |
2982 | target_pid_to_str (pid_to_ptid (pid))); | |
2983 | ||
2984 | target_mark_running (target); | |
2985 | inferior_ptid = pid_to_ptid (pid); | |
79d7f229 PA |
2986 | |
2987 | /* Now, if we have thread information, update inferior_ptid. */ | |
2988 | inferior_ptid = remote_current_thread (inferior_ptid); | |
2989 | ||
c0a2216e PA |
2990 | /* Now, add the main thread to the thread list. */ |
2991 | add_thread_silent (inferior_ptid); | |
2992 | ||
df7df359 | 2993 | attach_flag = 1; |
96ef3384 UW |
2994 | |
2995 | /* Next, if the target can specify a description, read it. We do | |
2996 | this before anything involving memory or registers. */ | |
2997 | target_find_description (); | |
2998 | ||
2999 | /* Use the previously fetched status. */ | |
3000 | gdb_assert (wait_status != NULL); | |
3001 | strcpy (rs->buf, wait_status); | |
3002 | rs->cached_wait_status = 1; | |
2d717e4f DJ |
3003 | } |
3004 | ||
3005 | static void | |
3006 | extended_remote_attach (char *args, int from_tty) | |
3007 | { | |
3008 | extended_remote_attach_1 (&extended_remote_ops, args, from_tty); | |
3009 | } | |
3010 | ||
c906108c SS |
3011 | /* Convert hex digit A to a number. */ |
3012 | ||
30559e10 | 3013 | static int |
fba45db2 | 3014 | fromhex (int a) |
c906108c SS |
3015 | { |
3016 | if (a >= '0' && a <= '9') | |
3017 | return a - '0'; | |
3018 | else if (a >= 'a' && a <= 'f') | |
3019 | return a - 'a' + 10; | |
3020 | else if (a >= 'A' && a <= 'F') | |
3021 | return a - 'A' + 10; | |
c5aa993b | 3022 | else |
8a3fe4f8 | 3023 | error (_("Reply contains invalid hex digit %d"), a); |
c906108c SS |
3024 | } |
3025 | ||
30559e10 | 3026 | static int |
cfd77fa1 | 3027 | hex2bin (const char *hex, gdb_byte *bin, int count) |
30559e10 MS |
3028 | { |
3029 | int i; | |
3030 | ||
30559e10 MS |
3031 | for (i = 0; i < count; i++) |
3032 | { | |
3033 | if (hex[0] == 0 || hex[1] == 0) | |
3034 | { | |
3035 | /* Hex string is short, or of uneven length. | |
23860348 | 3036 | Return the count that has been converted so far. */ |
30559e10 MS |
3037 | return i; |
3038 | } | |
3039 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); | |
3040 | hex += 2; | |
3041 | } | |
3042 | return i; | |
3043 | } | |
3044 | ||
c906108c SS |
3045 | /* Convert number NIB to a hex digit. */ |
3046 | ||
3047 | static int | |
fba45db2 | 3048 | tohex (int nib) |
c906108c SS |
3049 | { |
3050 | if (nib < 10) | |
c5aa993b | 3051 | return '0' + nib; |
c906108c | 3052 | else |
c5aa993b | 3053 | return 'a' + nib - 10; |
c906108c | 3054 | } |
30559e10 MS |
3055 | |
3056 | static int | |
cfd77fa1 | 3057 | bin2hex (const gdb_byte *bin, char *hex, int count) |
30559e10 MS |
3058 | { |
3059 | int i; | |
23860348 | 3060 | /* May use a length, or a nul-terminated string as input. */ |
30559e10 | 3061 | if (count == 0) |
cfd77fa1 | 3062 | count = strlen ((char *) bin); |
30559e10 MS |
3063 | |
3064 | for (i = 0; i < count; i++) | |
3065 | { | |
3066 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
3067 | *hex++ = tohex (*bin++ & 0xf); | |
3068 | } | |
3069 | *hex = 0; | |
3070 | return i; | |
3071 | } | |
c906108c | 3072 | \f |
506fb367 DJ |
3073 | /* Check for the availability of vCont. This function should also check |
3074 | the response. */ | |
c906108c SS |
3075 | |
3076 | static void | |
6d820c5c | 3077 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 3078 | { |
2e9f7625 | 3079 | char *buf; |
6d820c5c | 3080 | |
2e9f7625 DJ |
3081 | strcpy (rs->buf, "vCont?"); |
3082 | putpkt (rs->buf); | |
6d820c5c | 3083 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3084 | buf = rs->buf; |
c906108c | 3085 | |
506fb367 DJ |
3086 | /* Make sure that the features we assume are supported. */ |
3087 | if (strncmp (buf, "vCont", 5) == 0) | |
3088 | { | |
3089 | char *p = &buf[5]; | |
3090 | int support_s, support_S, support_c, support_C; | |
3091 | ||
3092 | support_s = 0; | |
3093 | support_S = 0; | |
3094 | support_c = 0; | |
3095 | support_C = 0; | |
3096 | while (p && *p == ';') | |
3097 | { | |
3098 | p++; | |
3099 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
3100 | support_s = 1; | |
3101 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
3102 | support_S = 1; | |
3103 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
3104 | support_c = 1; | |
3105 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
3106 | support_C = 1; | |
3107 | ||
3108 | p = strchr (p, ';'); | |
3109 | } | |
c906108c | 3110 | |
506fb367 DJ |
3111 | /* If s, S, c, and C are not all supported, we can't use vCont. Clearing |
3112 | BUF will make packet_ok disable the packet. */ | |
3113 | if (!support_s || !support_S || !support_c || !support_C) | |
3114 | buf[0] = 0; | |
3115 | } | |
c906108c | 3116 | |
444abaca | 3117 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 3118 | } |
c906108c | 3119 | |
506fb367 DJ |
3120 | /* Resume the remote inferior by using a "vCont" packet. The thread |
3121 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
79d7f229 PA |
3122 | resumed thread should be single-stepped and/or signalled. If PTID |
3123 | equals minus_one_ptid, then all threads are resumed; the thread to | |
3124 | be stepped and/or signalled is given in the global INFERIOR_PTID. | |
3125 | This function returns non-zero iff it resumes the inferior. | |
44eaed12 | 3126 | |
506fb367 DJ |
3127 | This function issues a strict subset of all possible vCont commands at the |
3128 | moment. */ | |
44eaed12 | 3129 | |
506fb367 DJ |
3130 | static int |
3131 | remote_vcont_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
3132 | { | |
3133 | struct remote_state *rs = get_remote_state (); | |
2d717e4f | 3134 | char *outbuf; |
506fb367 | 3135 | struct cleanup *old_cleanup; |
44eaed12 | 3136 | |
444abaca | 3137 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 3138 | remote_vcont_probe (rs); |
44eaed12 | 3139 | |
444abaca | 3140 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_DISABLE) |
6d820c5c | 3141 | return 0; |
44eaed12 | 3142 | |
506fb367 DJ |
3143 | /* If we could generate a wider range of packets, we'd have to worry |
3144 | about overflowing BUF. Should there be a generic | |
3145 | "multi-part-packet" packet? */ | |
3146 | ||
79d7f229 | 3147 | if (ptid_equal (ptid, magic_null_ptid)) |
c906108c | 3148 | { |
79d7f229 PA |
3149 | /* MAGIC_NULL_PTID means that we don't have any active threads, |
3150 | so we don't have any TID numbers the inferior will | |
3151 | understand. Make sure to only send forms that do not specify | |
3152 | a TID. */ | |
506fb367 | 3153 | if (step && siggnal != TARGET_SIGNAL_0) |
2963ee1d | 3154 | outbuf = xstrprintf ("vCont;S%02x", siggnal); |
506fb367 | 3155 | else if (step) |
2963ee1d | 3156 | outbuf = xstrprintf ("vCont;s"); |
506fb367 | 3157 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d | 3158 | outbuf = xstrprintf ("vCont;C%02x", siggnal); |
506fb367 | 3159 | else |
2963ee1d | 3160 | outbuf = xstrprintf ("vCont;c"); |
506fb367 | 3161 | } |
79d7f229 | 3162 | else if (ptid_equal (ptid, minus_one_ptid)) |
506fb367 DJ |
3163 | { |
3164 | /* Resume all threads, with preference for INFERIOR_PTID. */ | |
79d7f229 | 3165 | int tid = ptid_get_tid (inferior_ptid); |
506fb367 | 3166 | if (step && siggnal != TARGET_SIGNAL_0) |
79d7f229 | 3167 | outbuf = xstrprintf ("vCont;S%02x:%x;c", siggnal, tid); |
506fb367 | 3168 | else if (step) |
79d7f229 | 3169 | outbuf = xstrprintf ("vCont;s:%x;c", tid); |
506fb367 | 3170 | else if (siggnal != TARGET_SIGNAL_0) |
79d7f229 | 3171 | outbuf = xstrprintf ("vCont;C%02x:%x;c", siggnal, tid); |
506fb367 | 3172 | else |
2963ee1d | 3173 | outbuf = xstrprintf ("vCont;c"); |
c906108c SS |
3174 | } |
3175 | else | |
506fb367 DJ |
3176 | { |
3177 | /* Scheduler locking; resume only PTID. */ | |
79d7f229 | 3178 | int tid = ptid_get_tid (ptid); |
506fb367 | 3179 | if (step && siggnal != TARGET_SIGNAL_0) |
79d7f229 | 3180 | outbuf = xstrprintf ("vCont;S%02x:%x", siggnal, tid); |
506fb367 | 3181 | else if (step) |
79d7f229 | 3182 | outbuf = xstrprintf ("vCont;s:%x", tid); |
506fb367 | 3183 | else if (siggnal != TARGET_SIGNAL_0) |
79d7f229 | 3184 | outbuf = xstrprintf ("vCont;C%02x:%x", siggnal, tid); |
506fb367 | 3185 | else |
79d7f229 | 3186 | outbuf = xstrprintf ("vCont;c:%x", tid); |
506fb367 | 3187 | } |
c906108c | 3188 | |
ea9c271d | 3189 | gdb_assert (outbuf && strlen (outbuf) < get_remote_packet_size ()); |
6d820c5c | 3190 | old_cleanup = make_cleanup (xfree, outbuf); |
2963ee1d DJ |
3191 | |
3192 | putpkt (outbuf); | |
506fb367 DJ |
3193 | |
3194 | do_cleanups (old_cleanup); | |
3195 | ||
3196 | return 1; | |
c906108c | 3197 | } |
43ff13b4 | 3198 | |
506fb367 DJ |
3199 | /* Tell the remote machine to resume. */ |
3200 | ||
3201 | static enum target_signal last_sent_signal = TARGET_SIGNAL_0; | |
3202 | ||
3203 | static int last_sent_step; | |
3204 | ||
43ff13b4 | 3205 | static void |
506fb367 | 3206 | remote_resume (ptid_t ptid, int step, enum target_signal siggnal) |
43ff13b4 | 3207 | { |
d01949b6 | 3208 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 3209 | char *buf; |
43ff13b4 | 3210 | |
43ff13b4 JM |
3211 | last_sent_signal = siggnal; |
3212 | last_sent_step = step; | |
3213 | ||
89be2091 DJ |
3214 | /* Update the inferior on signals to silently pass, if they've changed. */ |
3215 | remote_pass_signals (); | |
3216 | ||
506fb367 DJ |
3217 | /* The vCont packet doesn't need to specify threads via Hc. */ |
3218 | if (remote_vcont_resume (ptid, step, siggnal)) | |
75c99385 | 3219 | goto done; |
506fb367 | 3220 | |
79d7f229 PA |
3221 | /* All other supported resume packets do use Hc, so set the continue |
3222 | thread. */ | |
3223 | if (ptid_equal (ptid, minus_one_ptid)) | |
3224 | set_continue_thread (any_thread_ptid); | |
506fb367 | 3225 | else |
79d7f229 | 3226 | set_continue_thread (ptid); |
506fb367 | 3227 | |
2e9f7625 | 3228 | buf = rs->buf; |
43ff13b4 JM |
3229 | if (siggnal != TARGET_SIGNAL_0) |
3230 | { | |
3231 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 3232 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 3233 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
3234 | buf[3] = '\0'; |
3235 | } | |
3236 | else | |
c5aa993b | 3237 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 3238 | |
44eaed12 | 3239 | putpkt (buf); |
43ff13b4 | 3240 | |
75c99385 | 3241 | done: |
2acceee2 JM |
3242 | /* We are about to start executing the inferior, let's register it |
3243 | with the event loop. NOTE: this is the one place where all the | |
3244 | execution commands end up. We could alternatively do this in each | |
23860348 | 3245 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
3246 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
3247 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 3248 | NOT asynchronously. */ |
362646f5 | 3249 | if (target_can_async_p ()) |
2acceee2 | 3250 | target_async (inferior_event_handler, 0); |
43ff13b4 | 3251 | } |
c906108c | 3252 | \f |
43ff13b4 JM |
3253 | |
3254 | /* Set up the signal handler for SIGINT, while the target is | |
23860348 | 3255 | executing, ovewriting the 'regular' SIGINT signal handler. */ |
43ff13b4 | 3256 | static void |
fba45db2 | 3257 | initialize_sigint_signal_handler (void) |
43ff13b4 | 3258 | { |
43ff13b4 JM |
3259 | signal (SIGINT, handle_remote_sigint); |
3260 | } | |
3261 | ||
23860348 | 3262 | /* Signal handler for SIGINT, while the target is executing. */ |
43ff13b4 | 3263 | static void |
fba45db2 | 3264 | handle_remote_sigint (int sig) |
43ff13b4 JM |
3265 | { |
3266 | signal (sig, handle_remote_sigint_twice); | |
43ff13b4 JM |
3267 | mark_async_signal_handler_wrapper (sigint_remote_token); |
3268 | } | |
3269 | ||
3270 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
3271 | sent once. It will take effect the second time that the user sends | |
23860348 | 3272 | a ^C. */ |
43ff13b4 | 3273 | static void |
fba45db2 | 3274 | handle_remote_sigint_twice (int sig) |
43ff13b4 | 3275 | { |
b803fb0f | 3276 | signal (sig, handle_remote_sigint); |
43ff13b4 JM |
3277 | mark_async_signal_handler_wrapper (sigint_remote_twice_token); |
3278 | } | |
3279 | ||
6426a772 | 3280 | /* Perform the real interruption of the target execution, in response |
23860348 | 3281 | to a ^C. */ |
c5aa993b | 3282 | static void |
fba45db2 | 3283 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
3284 | { |
3285 | if (remote_debug) | |
3286 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
3287 | ||
94cc34af | 3288 | target_stop (inferior_ptid); |
43ff13b4 JM |
3289 | } |
3290 | ||
3291 | /* Perform interrupt, if the first attempt did not succeed. Just give | |
23860348 | 3292 | up on the target alltogether. */ |
2df3850c | 3293 | void |
fba45db2 | 3294 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 3295 | { |
2df3850c JM |
3296 | if (remote_debug) |
3297 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt_twice called\n"); | |
b803fb0f DJ |
3298 | |
3299 | interrupt_query (); | |
43ff13b4 JM |
3300 | } |
3301 | ||
3302 | /* Reinstall the usual SIGINT handlers, after the target has | |
23860348 | 3303 | stopped. */ |
6426a772 JM |
3304 | static void |
3305 | cleanup_sigint_signal_handler (void *dummy) | |
43ff13b4 JM |
3306 | { |
3307 | signal (SIGINT, handle_sigint); | |
43ff13b4 JM |
3308 | } |
3309 | ||
c906108c SS |
3310 | /* Send ^C to target to halt it. Target will respond, and send us a |
3311 | packet. */ | |
507f3c78 | 3312 | static void (*ofunc) (int); |
c906108c | 3313 | |
7a292a7a SS |
3314 | /* The command line interface's stop routine. This function is installed |
3315 | as a signal handler for SIGINT. The first time a user requests a | |
3316 | stop, we call remote_stop to send a break or ^C. If there is no | |
3317 | response from the target (it didn't stop when the user requested it), | |
23860348 | 3318 | we ask the user if he'd like to detach from the target. */ |
c906108c | 3319 | static void |
fba45db2 | 3320 | remote_interrupt (int signo) |
c906108c | 3321 | { |
23860348 | 3322 | /* If this doesn't work, try more severe steps. */ |
7a292a7a SS |
3323 | signal (signo, remote_interrupt_twice); |
3324 | ||
b803fb0f | 3325 | gdb_call_async_signal_handler (sigint_remote_token, 1); |
7a292a7a SS |
3326 | } |
3327 | ||
3328 | /* The user typed ^C twice. */ | |
3329 | ||
3330 | static void | |
fba45db2 | 3331 | remote_interrupt_twice (int signo) |
7a292a7a SS |
3332 | { |
3333 | signal (signo, ofunc); | |
b803fb0f | 3334 | gdb_call_async_signal_handler (sigint_remote_twice_token, 1); |
c906108c SS |
3335 | signal (signo, remote_interrupt); |
3336 | } | |
7a292a7a SS |
3337 | |
3338 | /* This is the generic stop called via the target vector. When a target | |
3339 | interrupt is requested, either by the command line or the GUI, we | |
23860348 | 3340 | will eventually end up here. */ |
c906108c | 3341 | static void |
94cc34af | 3342 | remote_stop (ptid_t ptid) |
c906108c | 3343 | { |
7a292a7a SS |
3344 | /* Send a break or a ^C, depending on user preference. */ |
3345 | if (remote_debug) | |
0f71a2f6 | 3346 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 3347 | |
7a292a7a | 3348 | if (remote_break) |
2cd58942 | 3349 | serial_send_break (remote_desc); |
c906108c | 3350 | else |
2cd58942 | 3351 | serial_write (remote_desc, "\003", 1); |
c906108c SS |
3352 | } |
3353 | ||
3354 | /* Ask the user what to do when an interrupt is received. */ | |
3355 | ||
3356 | static void | |
fba45db2 | 3357 | interrupt_query (void) |
c906108c SS |
3358 | { |
3359 | target_terminal_ours (); | |
3360 | ||
3361 | if (query ("Interrupted while waiting for the program.\n\ | |
3362 | Give up (and stop debugging it)? ")) | |
3363 | { | |
3364 | target_mourn_inferior (); | |
b803fb0f | 3365 | signal (SIGINT, handle_sigint); |
315a522e | 3366 | deprecated_throw_reason (RETURN_QUIT); |
c906108c SS |
3367 | } |
3368 | ||
3369 | target_terminal_inferior (); | |
3370 | } | |
3371 | ||
6426a772 JM |
3372 | /* Enable/disable target terminal ownership. Most targets can use |
3373 | terminal groups to control terminal ownership. Remote targets are | |
3374 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 3375 | is required. */ |
6426a772 JM |
3376 | |
3377 | static void | |
75c99385 | 3378 | remote_terminal_inferior (void) |
6426a772 | 3379 | { |
c6ebd6cf | 3380 | if (!target_async_permitted) |
75c99385 PA |
3381 | /* Nothing to do. */ |
3382 | return; | |
3383 | ||
6426a772 JM |
3384 | /* FIXME: cagney/1999-09-27: Shouldn't need to test for |
3385 | sync_execution here. This function should only be called when | |
3386 | GDB is resuming the inferior in the forground. A background | |
3387 | resume (``run&'') should leave GDB in control of the terminal and | |
23860348 | 3388 | consequently should not call this code. */ |
6426a772 JM |
3389 | if (!sync_execution) |
3390 | return; | |
3391 | /* FIXME: cagney/1999-09-27: Closely related to the above. Make | |
3392 | calls target_terminal_*() idenpotent. The event-loop GDB talking | |
3393 | to an asynchronous target with a synchronous command calls this | |
3394 | function from both event-top.c and infrun.c/infcmd.c. Once GDB | |
3395 | stops trying to transfer the terminal to the target when it | |
3396 | shouldn't this guard can go away. */ | |
3397 | if (!remote_async_terminal_ours_p) | |
3398 | return; | |
3399 | delete_file_handler (input_fd); | |
3400 | remote_async_terminal_ours_p = 0; | |
3401 | initialize_sigint_signal_handler (); | |
3402 | /* NOTE: At this point we could also register our selves as the | |
3403 | recipient of all input. Any characters typed could then be | |
23860348 | 3404 | passed on down to the target. */ |
6426a772 JM |
3405 | } |
3406 | ||
3407 | static void | |
75c99385 | 3408 | remote_terminal_ours (void) |
6426a772 | 3409 | { |
c6ebd6cf | 3410 | if (!target_async_permitted) |
75c99385 PA |
3411 | /* Nothing to do. */ |
3412 | return; | |
3413 | ||
3414 | /* See FIXME in remote_terminal_inferior. */ | |
6426a772 JM |
3415 | if (!sync_execution) |
3416 | return; | |
75c99385 | 3417 | /* See FIXME in remote_terminal_inferior. */ |
6426a772 JM |
3418 | if (remote_async_terminal_ours_p) |
3419 | return; | |
3420 | cleanup_sigint_signal_handler (NULL); | |
3421 | add_file_handler (input_fd, stdin_event_handler, 0); | |
3422 | remote_async_terminal_ours_p = 1; | |
3423 | } | |
3424 | ||
c906108c | 3425 | void |
917317f4 | 3426 | remote_console_output (char *msg) |
c906108c SS |
3427 | { |
3428 | char *p; | |
3429 | ||
c5aa993b | 3430 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
3431 | { |
3432 | char tb[2]; | |
3433 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3434 | tb[0] = c; | |
3435 | tb[1] = 0; | |
43ff13b4 | 3436 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 3437 | } |
917317f4 | 3438 | gdb_flush (gdb_stdtarg); |
c906108c SS |
3439 | } |
3440 | ||
0f71a2f6 | 3441 | /* Wait until the remote machine stops, then return, |
79d7f229 | 3442 | storing status in STATUS just as `wait' would. */ |
c906108c | 3443 | |
39f77062 KB |
3444 | static ptid_t |
3445 | remote_wait (ptid_t ptid, struct target_waitstatus *status) | |
c906108c | 3446 | { |
d01949b6 | 3447 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 3448 | struct remote_arch_state *rsa = get_remote_arch_state (); |
b2dd6311 | 3449 | ULONGEST thread_num = -1; |
79d7f229 | 3450 | ULONGEST process_num = -1; |
3c3bea1c | 3451 | ULONGEST addr; |
cfa9d6d9 | 3452 | int solibs_changed = 0; |
c906108c SS |
3453 | |
3454 | status->kind = TARGET_WAITKIND_EXITED; | |
3455 | status->value.integer = 0; | |
3456 | ||
43ff13b4 JM |
3457 | while (1) |
3458 | { | |
2e9f7625 | 3459 | char *buf, *p; |
c5aa993b | 3460 | |
2d717e4f DJ |
3461 | if (rs->cached_wait_status) |
3462 | /* Use the cached wait status, but only once. */ | |
3463 | rs->cached_wait_status = 0; | |
3464 | else | |
9fa2223d | 3465 | { |
2d717e4f | 3466 | if (!target_is_async_p ()) |
9fa2223d | 3467 | { |
2d717e4f DJ |
3468 | ofunc = signal (SIGINT, remote_interrupt); |
3469 | /* If the user hit C-c before this packet, or between packets, | |
3470 | pretend that it was hit right here. */ | |
3471 | if (quit_flag) | |
3472 | { | |
3473 | quit_flag = 0; | |
3474 | remote_interrupt (SIGINT); | |
3475 | } | |
9fa2223d | 3476 | } |
2d717e4f DJ |
3477 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
3478 | _never_ wait for ever -> test on target_is_async_p(). | |
3479 | However, before we do that we need to ensure that the caller | |
3480 | knows how to take the target into/out of async mode. */ | |
3481 | getpkt (&rs->buf, &rs->buf_size, wait_forever_enabled_p); | |
3482 | if (!target_is_async_p ()) | |
3483 | signal (SIGINT, ofunc); | |
9fa2223d | 3484 | } |
43ff13b4 | 3485 | |
2e9f7625 DJ |
3486 | buf = rs->buf; |
3487 | ||
75c99385 PA |
3488 | remote_stopped_by_watchpoint_p = 0; |
3489 | ||
43ff13b4 JM |
3490 | switch (buf[0]) |
3491 | { | |
23860348 | 3492 | case 'E': /* Error of some sort. */ |
20b4711e DJ |
3493 | /* We're out of sync with the target now. Did it continue or not? |
3494 | Not is more likely, so report a stop. */ | |
8a3fe4f8 | 3495 | warning (_("Remote failure reply: %s"), buf); |
20b4711e DJ |
3496 | status->kind = TARGET_WAITKIND_STOPPED; |
3497 | status->value.sig = TARGET_SIGNAL_0; | |
3498 | goto got_status; | |
23860348 | 3499 | case 'F': /* File-I/O request. */ |
449092f6 CV |
3500 | remote_fileio_request (buf); |
3501 | continue; | |
23860348 | 3502 | case 'T': /* Status with PC, SP, FP, ... */ |
43ff13b4 | 3503 | { |
cfd77fa1 | 3504 | gdb_byte regs[MAX_REGISTER_SIZE]; |
43ff13b4 | 3505 | |
23860348 | 3506 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
43ff13b4 | 3507 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where |
c5aa993b JM |
3508 | ss = signal number |
3509 | n... = register number | |
3510 | r... = register contents | |
3511 | */ | |
43ff13b4 JM |
3512 | p = &buf[3]; /* after Txx */ |
3513 | ||
3514 | while (*p) | |
3515 | { | |
cfd77fa1 | 3516 | char *p1; |
43ff13b4 | 3517 | char *p_temp; |
6c3f2dbf | 3518 | int fieldsize; |
75c99385 | 3519 | LONGEST pnum = 0; |
43ff13b4 | 3520 | |
23860348 MS |
3521 | /* If the packet contains a register number, save it |
3522 | in pnum and set p1 to point to the character | |
3523 | following it. Otherwise p1 points to p. */ | |
3c3bea1c | 3524 | |
75c99385 PA |
3525 | /* If this packet is an awatch packet, don't parse the |
3526 | 'a' as a register number. */ | |
802188a7 | 3527 | |
cfa9d6d9 | 3528 | if (strncmp (p, "awatch", strlen("awatch")) != 0) |
3c3bea1c | 3529 | { |
75c99385 | 3530 | /* Read the ``P'' register number. */ |
3c3bea1c | 3531 | pnum = strtol (p, &p_temp, 16); |
cfd77fa1 | 3532 | p1 = p_temp; |
3c3bea1c | 3533 | } |
802188a7 | 3534 | else |
3c3bea1c | 3535 | p1 = p; |
43ff13b4 | 3536 | |
23860348 | 3537 | if (p1 == p) /* No register number present here. */ |
43ff13b4 | 3538 | { |
cfd77fa1 | 3539 | p1 = strchr (p, ':'); |
43ff13b4 | 3540 | if (p1 == NULL) |
8a3fe4f8 AC |
3541 | error (_("Malformed packet(a) (missing colon): %s\n\ |
3542 | Packet: '%s'\n"), | |
3fcb8548 | 3543 | p, buf); |
3c3bea1c | 3544 | if (strncmp (p, "thread", p1 - p) == 0) |
43ff13b4 JM |
3545 | { |
3546 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
cfd77fa1 | 3547 | p = p_temp; |
43ff13b4 | 3548 | } |
3c3bea1c GS |
3549 | else if ((strncmp (p, "watch", p1 - p) == 0) |
3550 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
3551 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
3552 | { | |
3553 | remote_stopped_by_watchpoint_p = 1; | |
3554 | p = unpack_varlen_hex (++p1, &addr); | |
3555 | remote_watch_data_address = (CORE_ADDR)addr; | |
3556 | } | |
cfa9d6d9 DJ |
3557 | else if (strncmp (p, "library", p1 - p) == 0) |
3558 | { | |
3559 | p1++; | |
3560 | p_temp = p1; | |
3561 | while (*p_temp && *p_temp != ';') | |
3562 | p_temp++; | |
3563 | ||
3564 | solibs_changed = 1; | |
3565 | p = p_temp; | |
3566 | } | |
3c3bea1c GS |
3567 | else |
3568 | { | |
3569 | /* Silently skip unknown optional info. */ | |
cfd77fa1 | 3570 | p_temp = strchr (p1 + 1, ';'); |
3c3bea1c GS |
3571 | if (p_temp) |
3572 | p = p_temp; | |
3573 | } | |
43ff13b4 JM |
3574 | } |
3575 | else | |
3576 | { | |
ea9c271d | 3577 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); |
43ff13b4 | 3578 | p = p1; |
75c99385 | 3579 | |
b4f62b57 | 3580 | if (*p != ':') |
8a3fe4f8 AC |
3581 | error (_("Malformed packet(b) (missing colon): %s\n\ |
3582 | Packet: '%s'\n"), | |
3fcb8548 | 3583 | p, buf); |
b4f62b57 | 3584 | ++p; |
43ff13b4 | 3585 | |
ad10f812 | 3586 | if (reg == NULL) |
75c99385 | 3587 | error (_("Remote sent bad register number %s: %s\n\ |
8a3fe4f8 | 3588 | Packet: '%s'\n"), |
75c99385 | 3589 | phex_nz (pnum, 0), p, buf); |
43ff13b4 | 3590 | |
cfd77fa1 | 3591 | fieldsize = hex2bin (p, regs, |
1cf3db46 | 3592 | register_size (target_gdbarch, |
23860348 | 3593 | reg->regnum)); |
6c3f2dbf | 3594 | p += 2 * fieldsize; |
1cf3db46 | 3595 | if (fieldsize < register_size (target_gdbarch, |
23860348 | 3596 | reg->regnum)) |
8a3fe4f8 | 3597 | warning (_("Remote reply is too short: %s"), buf); |
594f7785 UW |
3598 | regcache_raw_supply (get_current_regcache (), |
3599 | reg->regnum, regs); | |
43ff13b4 JM |
3600 | } |
3601 | ||
b4f62b57 | 3602 | if (*p != ';') |
8a3fe4f8 | 3603 | error (_("Remote register badly formatted: %s\nhere: %s"), |
0a2cfde4 | 3604 | buf, p); |
b4f62b57 | 3605 | ++p; |
43ff13b4 JM |
3606 | } |
3607 | } | |
3608 | /* fall through */ | |
23860348 | 3609 | case 'S': /* Old style status, just signal only. */ |
cfa9d6d9 DJ |
3610 | if (solibs_changed) |
3611 | status->kind = TARGET_WAITKIND_LOADED; | |
3612 | else | |
3613 | { | |
3614 | status->kind = TARGET_WAITKIND_STOPPED; | |
3615 | status->value.sig = (enum target_signal) | |
3616 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3617 | } | |
43ff13b4 | 3618 | goto got_status; |
23860348 | 3619 | case 'W': /* Target exited. */ |
43ff13b4 JM |
3620 | { |
3621 | /* The remote process exited. */ | |
3622 | status->kind = TARGET_WAITKIND_EXITED; | |
3623 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
3624 | goto got_status; | |
3625 | } | |
3626 | case 'X': | |
3627 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
3628 | status->value.sig = (enum target_signal) | |
3629 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
43ff13b4 JM |
3630 | |
3631 | goto got_status; | |
23860348 | 3632 | case 'O': /* Console output. */ |
43ff13b4 | 3633 | remote_console_output (buf + 1); |
75c99385 PA |
3634 | if (target_can_async_p ()) |
3635 | { | |
3636 | /* Return immediately to the event loop. The event loop | |
3637 | will still be waiting on the inferior afterwards. */ | |
3638 | status->kind = TARGET_WAITKIND_IGNORE; | |
3639 | goto got_status; | |
3640 | } | |
3641 | else | |
3642 | continue; | |
43ff13b4 JM |
3643 | case '\0': |
3644 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3645 | { | |
3646 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3647 | the remote system doesn't support it. */ |
43ff13b4 JM |
3648 | target_terminal_ours_for_output (); |
3649 | printf_filtered | |
3650 | ("Can't send signals to this remote system. %s not sent.\n", | |
3651 | target_signal_to_name (last_sent_signal)); | |
3652 | last_sent_signal = TARGET_SIGNAL_0; | |
3653 | target_terminal_inferior (); | |
3654 | ||
3655 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3656 | putpkt ((char *) buf); | |
3657 | continue; | |
3658 | } | |
3659 | /* else fallthrough */ | |
3660 | default: | |
8a3fe4f8 | 3661 | warning (_("Invalid remote reply: %s"), buf); |
43ff13b4 JM |
3662 | continue; |
3663 | } | |
3664 | } | |
c5aa993b | 3665 | got_status: |
43ff13b4 JM |
3666 | if (thread_num != -1) |
3667 | { | |
79d7f229 PA |
3668 | ptid_t ptid; |
3669 | ptid = ptid_build (ptid_get_pid (inferior_ptid), 0, thread_num); | |
3670 | record_currthread (ptid); | |
3671 | return ptid; | |
43ff13b4 | 3672 | } |
79d7f229 | 3673 | |
39f77062 | 3674 | return inferior_ptid; |
43ff13b4 JM |
3675 | } |
3676 | ||
74ca34ce | 3677 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 3678 | |
b96ec7ac | 3679 | static int |
56be3814 | 3680 | fetch_register_using_p (struct regcache *regcache, struct packet_reg *reg) |
b96ec7ac AC |
3681 | { |
3682 | struct remote_state *rs = get_remote_state (); | |
2e9f7625 | 3683 | char *buf, *p; |
b96ec7ac AC |
3684 | char regp[MAX_REGISTER_SIZE]; |
3685 | int i; | |
3686 | ||
74ca34ce DJ |
3687 | if (remote_protocol_packets[PACKET_p].support == PACKET_DISABLE) |
3688 | return 0; | |
3689 | ||
3690 | if (reg->pnum == -1) | |
3691 | return 0; | |
3692 | ||
2e9f7625 | 3693 | p = rs->buf; |
fcad0fa4 | 3694 | *p++ = 'p'; |
74ca34ce | 3695 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 3696 | *p++ = '\0'; |
6d820c5c | 3697 | remote_send (&rs->buf, &rs->buf_size); |
3f9a994c | 3698 | |
2e9f7625 DJ |
3699 | buf = rs->buf; |
3700 | ||
74ca34ce DJ |
3701 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_p])) |
3702 | { | |
3703 | case PACKET_OK: | |
3704 | break; | |
3705 | case PACKET_UNKNOWN: | |
3706 | return 0; | |
3707 | case PACKET_ERROR: | |
3708 | error (_("Could not fetch register \"%s\""), | |
4a22f64d | 3709 | gdbarch_register_name (get_regcache_arch (regcache), reg->regnum)); |
74ca34ce | 3710 | } |
3f9a994c JB |
3711 | |
3712 | /* If this register is unfetchable, tell the regcache. */ | |
3713 | if (buf[0] == 'x') | |
8480adf2 | 3714 | { |
56be3814 | 3715 | regcache_raw_supply (regcache, reg->regnum, NULL); |
8480adf2 | 3716 | return 1; |
b96ec7ac | 3717 | } |
b96ec7ac | 3718 | |
3f9a994c JB |
3719 | /* Otherwise, parse and supply the value. */ |
3720 | p = buf; | |
3721 | i = 0; | |
3722 | while (p[0] != 0) | |
3723 | { | |
3724 | if (p[1] == 0) | |
74ca34ce | 3725 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
3726 | |
3727 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3728 | p += 2; | |
3729 | } | |
56be3814 | 3730 | regcache_raw_supply (regcache, reg->regnum, regp); |
3f9a994c | 3731 | return 1; |
b96ec7ac AC |
3732 | } |
3733 | ||
74ca34ce DJ |
3734 | /* Fetch the registers included in the target's 'g' packet. */ |
3735 | ||
29709017 DJ |
3736 | static int |
3737 | send_g_packet (void) | |
c906108c | 3738 | { |
d01949b6 | 3739 | struct remote_state *rs = get_remote_state (); |
74ca34ce | 3740 | int i, buf_len; |
c906108c | 3741 | char *p; |
74ca34ce | 3742 | char *regs; |
c906108c | 3743 | |
74ca34ce DJ |
3744 | sprintf (rs->buf, "g"); |
3745 | remote_send (&rs->buf, &rs->buf_size); | |
c906108c | 3746 | |
29709017 DJ |
3747 | /* We can get out of synch in various cases. If the first character |
3748 | in the buffer is not a hex character, assume that has happened | |
3749 | and try to fetch another packet to read. */ | |
3750 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
3751 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
3752 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
3753 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
3754 | { | |
3755 | if (remote_debug) | |
3756 | fprintf_unfiltered (gdb_stdlog, | |
3757 | "Bad register packet; fetching a new packet\n"); | |
3758 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3759 | } | |
3760 | ||
74ca34ce DJ |
3761 | buf_len = strlen (rs->buf); |
3762 | ||
3763 | /* Sanity check the received packet. */ | |
3764 | if (buf_len % 2 != 0) | |
3765 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf); | |
29709017 DJ |
3766 | |
3767 | return buf_len / 2; | |
3768 | } | |
3769 | ||
3770 | static void | |
56be3814 | 3771 | process_g_packet (struct regcache *regcache) |
29709017 | 3772 | { |
4a22f64d | 3773 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
29709017 DJ |
3774 | struct remote_state *rs = get_remote_state (); |
3775 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
3776 | int i, buf_len; | |
3777 | char *p; | |
3778 | char *regs; | |
3779 | ||
3780 | buf_len = strlen (rs->buf); | |
3781 | ||
3782 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce DJ |
3783 | if (buf_len > 2 * rsa->sizeof_g_packet) |
3784 | error (_("Remote 'g' packet reply is too long: %s"), rs->buf); | |
3785 | ||
3786 | /* Save the size of the packet sent to us by the target. It is used | |
3787 | as a heuristic when determining the max size of packets that the | |
3788 | target can safely receive. */ | |
3789 | if (rsa->actual_register_packet_size == 0) | |
3790 | rsa->actual_register_packet_size = buf_len; | |
3791 | ||
3792 | /* If this is smaller than we guessed the 'g' packet would be, | |
3793 | update our records. A 'g' reply that doesn't include a register's | |
3794 | value implies either that the register is not available, or that | |
3795 | the 'p' packet must be used. */ | |
3796 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 3797 | { |
74ca34ce DJ |
3798 | rsa->sizeof_g_packet = buf_len / 2; |
3799 | ||
4a22f64d | 3800 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 3801 | { |
74ca34ce DJ |
3802 | if (rsa->regs[i].pnum == -1) |
3803 | continue; | |
3804 | ||
3805 | if (rsa->regs[i].offset >= rsa->sizeof_g_packet) | |
3806 | rsa->regs[i].in_g_packet = 0; | |
b96ec7ac | 3807 | else |
74ca34ce | 3808 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 3809 | } |
74ca34ce | 3810 | } |
b323314b | 3811 | |
74ca34ce | 3812 | regs = alloca (rsa->sizeof_g_packet); |
c906108c SS |
3813 | |
3814 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 3815 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 3816 | |
c906108c SS |
3817 | /* Reply describes registers byte by byte, each byte encoded as two |
3818 | hex characters. Suck them all up, then supply them to the | |
3819 | register cacheing/storage mechanism. */ | |
3820 | ||
74ca34ce | 3821 | p = rs->buf; |
ea9c271d | 3822 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 3823 | { |
74ca34ce DJ |
3824 | if (p[0] == 0 || p[1] == 0) |
3825 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
3826 | internal_error (__FILE__, __LINE__, | |
3827 | "unexpected end of 'g' packet reply"); | |
3828 | ||
c906108c | 3829 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 3830 | regs[i] = 0; /* 'x' */ |
c906108c SS |
3831 | else |
3832 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3833 | p += 2; | |
3834 | } | |
3835 | ||
ad10f812 | 3836 | { |
b323314b | 3837 | int i; |
4a22f64d | 3838 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
ad10f812 | 3839 | { |
ea9c271d | 3840 | struct packet_reg *r = &rsa->regs[i]; |
b323314b AC |
3841 | if (r->in_g_packet) |
3842 | { | |
74ca34ce DJ |
3843 | if (r->offset * 2 >= strlen (rs->buf)) |
3844 | /* This shouldn't happen - we adjusted in_g_packet above. */ | |
3845 | internal_error (__FILE__, __LINE__, | |
3846 | "unexpected end of 'g' packet reply"); | |
3847 | else if (rs->buf[r->offset * 2] == 'x') | |
8ccc1287 | 3848 | { |
74ca34ce | 3849 | gdb_assert (r->offset * 2 < strlen (rs->buf)); |
8ccc1287 AC |
3850 | /* The register isn't available, mark it as such (at |
3851 | the same time setting the value to zero). */ | |
56be3814 | 3852 | regcache_raw_supply (regcache, r->regnum, NULL); |
8ccc1287 AC |
3853 | } |
3854 | else | |
56be3814 | 3855 | regcache_raw_supply (regcache, r->regnum, |
8ccc1287 | 3856 | regs + r->offset); |
b323314b | 3857 | } |
ad10f812 AC |
3858 | } |
3859 | } | |
c906108c SS |
3860 | } |
3861 | ||
29709017 | 3862 | static void |
56be3814 | 3863 | fetch_registers_using_g (struct regcache *regcache) |
29709017 DJ |
3864 | { |
3865 | send_g_packet (); | |
56be3814 | 3866 | process_g_packet (regcache); |
29709017 DJ |
3867 | } |
3868 | ||
74ca34ce | 3869 | static void |
56be3814 | 3870 | remote_fetch_registers (struct regcache *regcache, int regnum) |
74ca34ce DJ |
3871 | { |
3872 | struct remote_state *rs = get_remote_state (); | |
3873 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
3874 | int i; | |
3875 | ||
79d7f229 | 3876 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
3877 | |
3878 | if (regnum >= 0) | |
3879 | { | |
3880 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
3881 | gdb_assert (reg != NULL); | |
3882 | ||
3883 | /* If this register might be in the 'g' packet, try that first - | |
3884 | we are likely to read more than one register. If this is the | |
3885 | first 'g' packet, we might be overly optimistic about its | |
3886 | contents, so fall back to 'p'. */ | |
3887 | if (reg->in_g_packet) | |
3888 | { | |
56be3814 | 3889 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
3890 | if (reg->in_g_packet) |
3891 | return; | |
3892 | } | |
3893 | ||
56be3814 | 3894 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
3895 | return; |
3896 | ||
3897 | /* This register is not available. */ | |
56be3814 | 3898 | regcache_raw_supply (regcache, reg->regnum, NULL); |
74ca34ce DJ |
3899 | |
3900 | return; | |
3901 | } | |
3902 | ||
56be3814 | 3903 | fetch_registers_using_g (regcache); |
74ca34ce | 3904 | |
4a22f64d | 3905 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 3906 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 3907 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
3908 | { |
3909 | /* This register is not available. */ | |
56be3814 | 3910 | regcache_raw_supply (regcache, i, NULL); |
74ca34ce DJ |
3911 | } |
3912 | } | |
3913 | ||
c906108c SS |
3914 | /* Prepare to store registers. Since we may send them all (using a |
3915 | 'G' request), we have to read out the ones we don't want to change | |
3916 | first. */ | |
3917 | ||
c5aa993b | 3918 | static void |
316f2060 | 3919 | remote_prepare_to_store (struct regcache *regcache) |
c906108c | 3920 | { |
ea9c271d | 3921 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cf0e1e0d | 3922 | int i; |
cfd77fa1 | 3923 | gdb_byte buf[MAX_REGISTER_SIZE]; |
cf0e1e0d | 3924 | |
c906108c | 3925 | /* Make sure the entire registers array is valid. */ |
444abaca | 3926 | switch (remote_protocol_packets[PACKET_P].support) |
5a2468f5 JM |
3927 | { |
3928 | case PACKET_DISABLE: | |
3929 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 3930 | /* Make sure all the necessary registers are cached. */ |
4a22f64d | 3931 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
ea9c271d | 3932 | if (rsa->regs[i].in_g_packet) |
316f2060 | 3933 | regcache_raw_read (regcache, rsa->regs[i].regnum, buf); |
5a2468f5 JM |
3934 | break; |
3935 | case PACKET_ENABLE: | |
3936 | break; | |
3937 | } | |
3938 | } | |
3939 | ||
ad10f812 | 3940 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 3941 | packet was not recognized. */ |
5a2468f5 JM |
3942 | |
3943 | static int | |
56be3814 | 3944 | store_register_using_P (const struct regcache *regcache, struct packet_reg *reg) |
5a2468f5 | 3945 | { |
4a22f64d | 3946 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
d01949b6 | 3947 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 3948 | struct remote_arch_state *rsa = get_remote_arch_state (); |
5a2468f5 | 3949 | /* Try storing a single register. */ |
6d820c5c | 3950 | char *buf = rs->buf; |
cfd77fa1 | 3951 | gdb_byte regp[MAX_REGISTER_SIZE]; |
5a2468f5 | 3952 | char *p; |
5a2468f5 | 3953 | |
74ca34ce DJ |
3954 | if (remote_protocol_packets[PACKET_P].support == PACKET_DISABLE) |
3955 | return 0; | |
3956 | ||
3957 | if (reg->pnum == -1) | |
3958 | return 0; | |
3959 | ||
ea9c271d | 3960 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 3961 | p = buf + strlen (buf); |
56be3814 | 3962 | regcache_raw_collect (regcache, reg->regnum, regp); |
4a22f64d | 3963 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
6d820c5c | 3964 | remote_send (&rs->buf, &rs->buf_size); |
5a2468f5 | 3965 | |
74ca34ce DJ |
3966 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
3967 | { | |
3968 | case PACKET_OK: | |
3969 | return 1; | |
3970 | case PACKET_ERROR: | |
3971 | error (_("Could not write register \"%s\""), | |
4a22f64d | 3972 | gdbarch_register_name (gdbarch, reg->regnum)); |
74ca34ce DJ |
3973 | case PACKET_UNKNOWN: |
3974 | return 0; | |
3975 | default: | |
3976 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
3977 | } | |
c906108c SS |
3978 | } |
3979 | ||
23860348 MS |
3980 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
3981 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
3982 | |
3983 | static void | |
56be3814 | 3984 | store_registers_using_G (const struct regcache *regcache) |
c906108c | 3985 | { |
d01949b6 | 3986 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 3987 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cfd77fa1 | 3988 | gdb_byte *regs; |
c906108c SS |
3989 | char *p; |
3990 | ||
193cb69f AC |
3991 | /* Extract all the registers in the regcache copying them into a |
3992 | local buffer. */ | |
3993 | { | |
b323314b | 3994 | int i; |
ea9c271d DJ |
3995 | regs = alloca (rsa->sizeof_g_packet); |
3996 | memset (regs, 0, rsa->sizeof_g_packet); | |
4a22f64d | 3997 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
193cb69f | 3998 | { |
ea9c271d | 3999 | struct packet_reg *r = &rsa->regs[i]; |
b323314b | 4000 | if (r->in_g_packet) |
56be3814 | 4001 | regcache_raw_collect (regcache, r->regnum, regs + r->offset); |
193cb69f AC |
4002 | } |
4003 | } | |
c906108c SS |
4004 | |
4005 | /* Command describes registers byte by byte, | |
4006 | each byte encoded as two hex characters. */ | |
6d820c5c | 4007 | p = rs->buf; |
193cb69f | 4008 | *p++ = 'G'; |
74ca34ce DJ |
4009 | /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets |
4010 | updated. */ | |
4011 | bin2hex (regs, p, rsa->sizeof_g_packet); | |
6d820c5c | 4012 | remote_send (&rs->buf, &rs->buf_size); |
c906108c | 4013 | } |
74ca34ce DJ |
4014 | |
4015 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
4016 | of the register cache buffer. FIXME: ignores errors. */ | |
4017 | ||
4018 | static void | |
56be3814 | 4019 | remote_store_registers (struct regcache *regcache, int regnum) |
74ca34ce DJ |
4020 | { |
4021 | struct remote_state *rs = get_remote_state (); | |
4022 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
4023 | int i; | |
4024 | ||
79d7f229 | 4025 | set_general_thread (inferior_ptid); |
74ca34ce DJ |
4026 | |
4027 | if (regnum >= 0) | |
4028 | { | |
4029 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
4030 | gdb_assert (reg != NULL); | |
4031 | ||
4032 | /* Always prefer to store registers using the 'P' packet if | |
4033 | possible; we often change only a small number of registers. | |
4034 | Sometimes we change a larger number; we'd need help from a | |
4035 | higher layer to know to use 'G'. */ | |
56be3814 | 4036 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
4037 | return; |
4038 | ||
4039 | /* For now, don't complain if we have no way to write the | |
4040 | register. GDB loses track of unavailable registers too | |
4041 | easily. Some day, this may be an error. We don't have | |
4042 | any way to read the register, either... */ | |
4043 | if (!reg->in_g_packet) | |
4044 | return; | |
4045 | ||
56be3814 | 4046 | store_registers_using_G (regcache); |
74ca34ce DJ |
4047 | return; |
4048 | } | |
4049 | ||
56be3814 | 4050 | store_registers_using_G (regcache); |
74ca34ce | 4051 | |
4a22f64d | 4052 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 4053 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 4054 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
4055 | /* See above for why we do not issue an error here. */ |
4056 | continue; | |
4057 | } | |
c906108c SS |
4058 | \f |
4059 | ||
4060 | /* Return the number of hex digits in num. */ | |
4061 | ||
4062 | static int | |
fba45db2 | 4063 | hexnumlen (ULONGEST num) |
c906108c SS |
4064 | { |
4065 | int i; | |
4066 | ||
4067 | for (i = 0; num != 0; i++) | |
4068 | num >>= 4; | |
4069 | ||
4070 | return max (i, 1); | |
4071 | } | |
4072 | ||
2df3850c | 4073 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
4074 | |
4075 | static int | |
fba45db2 | 4076 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 4077 | { |
c906108c | 4078 | int len = hexnumlen (num); |
2df3850c JM |
4079 | return hexnumnstr (buf, num, len); |
4080 | } | |
4081 | ||
c906108c | 4082 | |
2df3850c | 4083 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 4084 | |
2df3850c | 4085 | static int |
fba45db2 | 4086 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
4087 | { |
4088 | int i; | |
4089 | ||
4090 | buf[width] = '\0'; | |
4091 | ||
4092 | for (i = width - 1; i >= 0; i--) | |
c906108c | 4093 | { |
c5aa993b | 4094 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
4095 | num >>= 4; |
4096 | } | |
4097 | ||
2df3850c | 4098 | return width; |
c906108c SS |
4099 | } |
4100 | ||
23860348 | 4101 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
4102 | |
4103 | static CORE_ADDR | |
fba45db2 | 4104 | remote_address_masked (CORE_ADDR addr) |
c906108c | 4105 | { |
911c95a5 UW |
4106 | int address_size = remote_address_size; |
4107 | /* If "remoteaddresssize" was not set, default to target address size. */ | |
4108 | if (!address_size) | |
1cf3db46 | 4109 | address_size = gdbarch_addr_bit (target_gdbarch); |
911c95a5 UW |
4110 | |
4111 | if (address_size > 0 | |
4112 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
4113 | { |
4114 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 4115 | in a ULONGEST variable. */ |
c906108c | 4116 | ULONGEST mask = 1; |
911c95a5 | 4117 | mask = (mask << address_size) - 1; |
c906108c SS |
4118 | addr &= mask; |
4119 | } | |
4120 | return addr; | |
4121 | } | |
4122 | ||
a31ea83d DJ |
4123 | /* Convert BUFFER, binary data at least LEN bytes long, into escaped |
4124 | binary data in OUT_BUF. Set *OUT_LEN to the length of the data | |
4125 | encoded in OUT_BUF, and return the number of bytes in OUT_BUF | |
4126 | (which may be more than *OUT_LEN due to escape characters). The | |
4127 | total number of bytes in the output buffer will be at most | |
4128 | OUT_MAXLEN. */ | |
4129 | ||
4130 | static int | |
4131 | remote_escape_output (const gdb_byte *buffer, int len, | |
4132 | gdb_byte *out_buf, int *out_len, | |
4133 | int out_maxlen) | |
4134 | { | |
4135 | int input_index, output_index; | |
4136 | ||
4137 | output_index = 0; | |
4138 | for (input_index = 0; input_index < len; input_index++) | |
4139 | { | |
4140 | gdb_byte b = buffer[input_index]; | |
4141 | ||
4142 | if (b == '$' || b == '#' || b == '}') | |
4143 | { | |
4144 | /* These must be escaped. */ | |
4145 | if (output_index + 2 > out_maxlen) | |
4146 | break; | |
4147 | out_buf[output_index++] = '}'; | |
4148 | out_buf[output_index++] = b ^ 0x20; | |
4149 | } | |
4150 | else | |
4151 | { | |
4152 | if (output_index + 1 > out_maxlen) | |
4153 | break; | |
4154 | out_buf[output_index++] = b; | |
4155 | } | |
4156 | } | |
4157 | ||
4158 | *out_len = input_index; | |
4159 | return output_index; | |
4160 | } | |
4161 | ||
0876f84a DJ |
4162 | /* Convert BUFFER, escaped data LEN bytes long, into binary data |
4163 | in OUT_BUF. Return the number of bytes written to OUT_BUF. | |
4164 | Raise an error if the total number of bytes exceeds OUT_MAXLEN. | |
4165 | ||
4166 | This function reverses remote_escape_output. It allows more | |
4167 | escaped characters than that function does, in particular because | |
4168 | '*' must be escaped to avoid the run-length encoding processing | |
4169 | in reading packets. */ | |
4170 | ||
4171 | static int | |
4172 | remote_unescape_input (const gdb_byte *buffer, int len, | |
4173 | gdb_byte *out_buf, int out_maxlen) | |
4174 | { | |
4175 | int input_index, output_index; | |
4176 | int escaped; | |
4177 | ||
4178 | output_index = 0; | |
4179 | escaped = 0; | |
4180 | for (input_index = 0; input_index < len; input_index++) | |
4181 | { | |
4182 | gdb_byte b = buffer[input_index]; | |
4183 | ||
4184 | if (output_index + 1 > out_maxlen) | |
4185 | { | |
4186 | warning (_("Received too much data from remote target;" | |
4187 | " ignoring overflow.")); | |
4188 | return output_index; | |
4189 | } | |
4190 | ||
4191 | if (escaped) | |
4192 | { | |
4193 | out_buf[output_index++] = b ^ 0x20; | |
4194 | escaped = 0; | |
4195 | } | |
4196 | else if (b == '}') | |
4197 | escaped = 1; | |
4198 | else | |
4199 | out_buf[output_index++] = b; | |
4200 | } | |
4201 | ||
4202 | if (escaped) | |
4203 | error (_("Unmatched escape character in target response.")); | |
4204 | ||
4205 | return output_index; | |
4206 | } | |
4207 | ||
c906108c SS |
4208 | /* Determine whether the remote target supports binary downloading. |
4209 | This is accomplished by sending a no-op memory write of zero length | |
4210 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
4211 | the whole packet, since many stubs strip the eighth bit and |
4212 | subsequently compute a wrong checksum, which causes real havoc with | |
4213 | remote_write_bytes. | |
7a292a7a | 4214 | |
96baa820 JM |
4215 | NOTE: This can still lose if the serial line is not eight-bit |
4216 | clean. In cases like this, the user should clear "remote | |
23860348 | 4217 | X-packet". */ |
96baa820 | 4218 | |
c906108c | 4219 | static void |
fba45db2 | 4220 | check_binary_download (CORE_ADDR addr) |
c906108c | 4221 | { |
d01949b6 | 4222 | struct remote_state *rs = get_remote_state (); |
24b06219 | 4223 | |
444abaca | 4224 | switch (remote_protocol_packets[PACKET_X].support) |
c906108c | 4225 | { |
96baa820 JM |
4226 | case PACKET_DISABLE: |
4227 | break; | |
4228 | case PACKET_ENABLE: | |
4229 | break; | |
4230 | case PACKET_SUPPORT_UNKNOWN: | |
4231 | { | |
96baa820 | 4232 | char *p; |
802188a7 | 4233 | |
2e9f7625 | 4234 | p = rs->buf; |
96baa820 JM |
4235 | *p++ = 'X'; |
4236 | p += hexnumstr (p, (ULONGEST) addr); | |
4237 | *p++ = ','; | |
4238 | p += hexnumstr (p, (ULONGEST) 0); | |
4239 | *p++ = ':'; | |
4240 | *p = '\0'; | |
802188a7 | 4241 | |
2e9f7625 | 4242 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 4243 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 4244 | |
2e9f7625 | 4245 | if (rs->buf[0] == '\0') |
96baa820 JM |
4246 | { |
4247 | if (remote_debug) | |
4248 | fprintf_unfiltered (gdb_stdlog, | |
4249 | "binary downloading NOT suppported by target\n"); | |
444abaca | 4250 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
4251 | } |
4252 | else | |
4253 | { | |
4254 | if (remote_debug) | |
4255 | fprintf_unfiltered (gdb_stdlog, | |
4256 | "binary downloading suppported by target\n"); | |
444abaca | 4257 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
4258 | } |
4259 | break; | |
4260 | } | |
c906108c SS |
4261 | } |
4262 | } | |
4263 | ||
4264 | /* Write memory data directly to the remote machine. | |
4265 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 4266 | HEADER is the starting part of the packet. |
c906108c SS |
4267 | MEMADDR is the address in the remote memory space. |
4268 | MYADDR is the address of the buffer in our space. | |
4269 | LEN is the number of bytes. | |
a76d924d DJ |
4270 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
4271 | should send data as binary ('X'), or hex-encoded ('M'). | |
4272 | ||
4273 | The function creates packet of the form | |
4274 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
4275 | ||
4276 | where encoding of <DATA> is termined by PACKET_FORMAT. | |
4277 | ||
4278 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
4279 | are omitted. | |
4280 | ||
4281 | Returns the number of bytes transferred, or 0 (setting errno) for | |
23860348 | 4282 | error. Only transfer a single packet. */ |
c906108c | 4283 | |
a76d924d DJ |
4284 | static int |
4285 | remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, | |
4286 | const gdb_byte *myaddr, int len, | |
4287 | char packet_format, int use_length) | |
c906108c | 4288 | { |
6d820c5c | 4289 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 4290 | char *p; |
a76d924d DJ |
4291 | char *plen = NULL; |
4292 | int plenlen = 0; | |
917317f4 JM |
4293 | int todo; |
4294 | int nr_bytes; | |
a257b5bb | 4295 | int payload_size; |
6765f3e5 | 4296 | int payload_length; |
a76d924d DJ |
4297 | int header_length; |
4298 | ||
4299 | if (packet_format != 'X' && packet_format != 'M') | |
4300 | internal_error (__FILE__, __LINE__, | |
4301 | "remote_write_bytes_aux: bad packet format"); | |
c906108c | 4302 | |
b2182ed2 DJ |
4303 | if (len <= 0) |
4304 | return 0; | |
4305 | ||
3de11b2e | 4306 | payload_size = get_memory_write_packet_size (); |
2bc416ba | 4307 | |
6d820c5c DJ |
4308 | /* The packet buffer will be large enough for the payload; |
4309 | get_memory_packet_size ensures this. */ | |
a76d924d | 4310 | rs->buf[0] = '\0'; |
c906108c | 4311 | |
a257b5bb | 4312 | /* Compute the size of the actual payload by subtracting out the |
3de11b2e NS |
4313 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". |
4314 | */ | |
a76d924d DJ |
4315 | payload_size -= strlen ("$,:#NN"); |
4316 | if (!use_length) | |
4317 | /* The comma won't be used. */ | |
4318 | payload_size += 1; | |
4319 | header_length = strlen (header); | |
4320 | payload_size -= header_length; | |
3de11b2e | 4321 | payload_size -= hexnumlen (memaddr); |
c906108c | 4322 | |
a76d924d | 4323 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 4324 | |
a76d924d DJ |
4325 | strcat (rs->buf, header); |
4326 | p = rs->buf + strlen (header); | |
4327 | ||
4328 | /* Compute a best guess of the number of bytes actually transfered. */ | |
4329 | if (packet_format == 'X') | |
c906108c | 4330 | { |
23860348 | 4331 | /* Best guess at number of bytes that will fit. */ |
a257b5bb | 4332 | todo = min (len, payload_size); |
a76d924d DJ |
4333 | if (use_length) |
4334 | payload_size -= hexnumlen (todo); | |
3de11b2e | 4335 | todo = min (todo, payload_size); |
a76d924d DJ |
4336 | } |
4337 | else | |
4338 | { | |
23860348 | 4339 | /* Num bytes that will fit. */ |
a257b5bb | 4340 | todo = min (len, payload_size / 2); |
a76d924d DJ |
4341 | if (use_length) |
4342 | payload_size -= hexnumlen (todo); | |
3de11b2e | 4343 | todo = min (todo, payload_size / 2); |
917317f4 | 4344 | } |
a76d924d | 4345 | |
3de11b2e NS |
4346 | if (todo <= 0) |
4347 | internal_error (__FILE__, __LINE__, | |
4348 | _("minumum packet size too small to write data")); | |
802188a7 | 4349 | |
6765f3e5 DJ |
4350 | /* If we already need another packet, then try to align the end |
4351 | of this packet to a useful boundary. */ | |
4352 | if (todo > 2 * REMOTE_ALIGN_WRITES && todo < len) | |
4353 | todo = ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
4354 | ||
a257b5bb | 4355 | /* Append "<memaddr>". */ |
917317f4 JM |
4356 | memaddr = remote_address_masked (memaddr); |
4357 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 4358 | |
a76d924d DJ |
4359 | if (use_length) |
4360 | { | |
4361 | /* Append ",". */ | |
4362 | *p++ = ','; | |
802188a7 | 4363 | |
a76d924d DJ |
4364 | /* Append <len>. Retain the location/size of <len>. It may need to |
4365 | be adjusted once the packet body has been created. */ | |
4366 | plen = p; | |
4367 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
4368 | p += plenlen; | |
4369 | } | |
a257b5bb AC |
4370 | |
4371 | /* Append ":". */ | |
917317f4 JM |
4372 | *p++ = ':'; |
4373 | *p = '\0'; | |
802188a7 | 4374 | |
a257b5bb | 4375 | /* Append the packet body. */ |
a76d924d | 4376 | if (packet_format == 'X') |
917317f4 | 4377 | { |
917317f4 JM |
4378 | /* Binary mode. Send target system values byte by byte, in |
4379 | increasing byte addresses. Only escape certain critical | |
4380 | characters. */ | |
6765f3e5 DJ |
4381 | payload_length = remote_escape_output (myaddr, todo, p, &nr_bytes, |
4382 | payload_size); | |
4383 | ||
4384 | /* If not all TODO bytes fit, then we'll need another packet. Make | |
9b7194bc DJ |
4385 | a second try to keep the end of the packet aligned. Don't do |
4386 | this if the packet is tiny. */ | |
4387 | if (nr_bytes < todo && nr_bytes > 2 * REMOTE_ALIGN_WRITES) | |
6765f3e5 DJ |
4388 | { |
4389 | int new_nr_bytes; | |
4390 | ||
4391 | new_nr_bytes = (((memaddr + nr_bytes) & ~(REMOTE_ALIGN_WRITES - 1)) | |
4392 | - memaddr); | |
4393 | if (new_nr_bytes != nr_bytes) | |
4394 | payload_length = remote_escape_output (myaddr, new_nr_bytes, | |
4395 | p, &nr_bytes, | |
4396 | payload_size); | |
4397 | } | |
4398 | ||
4399 | p += payload_length; | |
a76d924d | 4400 | if (use_length && nr_bytes < todo) |
c906108c | 4401 | { |
802188a7 | 4402 | /* Escape chars have filled up the buffer prematurely, |
917317f4 JM |
4403 | and we have actually sent fewer bytes than planned. |
4404 | Fix-up the length field of the packet. Use the same | |
4405 | number of characters as before. */ | |
917317f4 JM |
4406 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); |
4407 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 4408 | } |
a76d924d DJ |
4409 | } |
4410 | else | |
4411 | { | |
917317f4 JM |
4412 | /* Normal mode: Send target system values byte by byte, in |
4413 | increasing byte addresses. Each byte is encoded as a two hex | |
4414 | value. */ | |
2644f393 | 4415 | nr_bytes = bin2hex (myaddr, p, todo); |
aa6c0017 | 4416 | p += 2 * nr_bytes; |
c906108c | 4417 | } |
802188a7 | 4418 | |
2e9f7625 | 4419 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 4420 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 4421 | |
2e9f7625 | 4422 | if (rs->buf[0] == 'E') |
917317f4 JM |
4423 | { |
4424 | /* There is no correspondance between what the remote protocol | |
4425 | uses for errors and errno codes. We would like a cleaner way | |
4426 | of representing errors (big enough to include errno codes, | |
4427 | bfd_error codes, and others). But for now just return EIO. */ | |
4428 | errno = EIO; | |
4429 | return 0; | |
4430 | } | |
802188a7 | 4431 | |
23860348 MS |
4432 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send |
4433 | fewer bytes than we'd planned. */ | |
917317f4 | 4434 | return nr_bytes; |
c906108c SS |
4435 | } |
4436 | ||
a76d924d DJ |
4437 | /* Write memory data directly to the remote machine. |
4438 | This does not inform the data cache; the data cache uses this. | |
4439 | MEMADDR is the address in the remote memory space. | |
4440 | MYADDR is the address of the buffer in our space. | |
4441 | LEN is the number of bytes. | |
4442 | ||
4443 | Returns number of bytes transferred, or 0 (setting errno) for | |
4444 | error. Only transfer a single packet. */ | |
4445 | ||
4446 | int | |
4447 | remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, int len) | |
4448 | { | |
4449 | char *packet_format = 0; | |
4450 | ||
4451 | /* Check whether the target supports binary download. */ | |
4452 | check_binary_download (memaddr); | |
4453 | ||
4454 | switch (remote_protocol_packets[PACKET_X].support) | |
4455 | { | |
4456 | case PACKET_ENABLE: | |
4457 | packet_format = "X"; | |
4458 | break; | |
4459 | case PACKET_DISABLE: | |
4460 | packet_format = "M"; | |
4461 | break; | |
4462 | case PACKET_SUPPORT_UNKNOWN: | |
4463 | internal_error (__FILE__, __LINE__, | |
4464 | _("remote_write_bytes: bad internal state")); | |
4465 | default: | |
4466 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
4467 | } | |
4468 | ||
4469 | return remote_write_bytes_aux (packet_format, | |
4470 | memaddr, myaddr, len, packet_format[0], 1); | |
4471 | } | |
4472 | ||
c906108c SS |
4473 | /* Read memory data directly from the remote machine. |
4474 | This does not use the data cache; the data cache uses this. | |
4475 | MEMADDR is the address in the remote memory space. | |
4476 | MYADDR is the address of the buffer in our space. | |
4477 | LEN is the number of bytes. | |
4478 | ||
4479 | Returns number of bytes transferred, or 0 for error. */ | |
4480 | ||
917317f4 JM |
4481 | /* NOTE: cagney/1999-10-18: This function (and its siblings in other |
4482 | remote targets) shouldn't attempt to read the entire buffer. | |
4483 | Instead it should read a single packet worth of data and then | |
4484 | return the byte size of that packet to the caller. The caller (its | |
4485 | caller and its callers caller ;-) already contains code for | |
23860348 | 4486 | handling partial reads. */ |
917317f4 | 4487 | |
449092f6 | 4488 | int |
cfd77fa1 | 4489 | remote_read_bytes (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
c906108c | 4490 | { |
6d820c5c | 4491 | struct remote_state *rs = get_remote_state (); |
23860348 | 4492 | int max_buf_size; /* Max size of packet output buffer. */ |
c906108c SS |
4493 | int origlen; |
4494 | ||
b2182ed2 DJ |
4495 | if (len <= 0) |
4496 | return 0; | |
4497 | ||
11cf8741 | 4498 | max_buf_size = get_memory_read_packet_size (); |
6d820c5c DJ |
4499 | /* The packet buffer will be large enough for the payload; |
4500 | get_memory_packet_size ensures this. */ | |
c906108c SS |
4501 | |
4502 | origlen = len; | |
4503 | while (len > 0) | |
4504 | { | |
c906108c SS |
4505 | char *p; |
4506 | int todo; | |
4507 | int i; | |
4508 | ||
c5aa993b | 4509 | todo = min (len, max_buf_size / 2); /* num bytes that will fit */ |
c906108c SS |
4510 | |
4511 | /* construct "m"<memaddr>","<len>" */ | |
2e9f7625 | 4512 | /* sprintf (rs->buf, "m%lx,%x", (unsigned long) memaddr, todo); */ |
c906108c | 4513 | memaddr = remote_address_masked (memaddr); |
2e9f7625 | 4514 | p = rs->buf; |
c906108c SS |
4515 | *p++ = 'm'; |
4516 | p += hexnumstr (p, (ULONGEST) memaddr); | |
4517 | *p++ = ','; | |
4518 | p += hexnumstr (p, (ULONGEST) todo); | |
4519 | *p = '\0'; | |
4520 | ||
2e9f7625 | 4521 | putpkt (rs->buf); |
6d820c5c | 4522 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 4523 | |
2e9f7625 DJ |
4524 | if (rs->buf[0] == 'E' |
4525 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
4526 | && rs->buf[3] == '\0') | |
c906108c | 4527 | { |
23860348 MS |
4528 | /* There is no correspondance between what the remote |
4529 | protocol uses for errors and errno codes. We would like | |
4530 | a cleaner way of representing errors (big enough to | |
4531 | include errno codes, bfd_error codes, and others). But | |
4532 | for now just return EIO. */ | |
c906108c SS |
4533 | errno = EIO; |
4534 | return 0; | |
4535 | } | |
4536 | ||
c5aa993b JM |
4537 | /* Reply describes memory byte by byte, |
4538 | each byte encoded as two hex characters. */ | |
c906108c | 4539 | |
2e9f7625 | 4540 | p = rs->buf; |
30559e10 | 4541 | if ((i = hex2bin (p, myaddr, todo)) < todo) |
c906108c | 4542 | { |
30559e10 | 4543 | /* Reply is short. This means that we were able to read |
23860348 | 4544 | only part of what we wanted to. */ |
30559e10 | 4545 | return i + (origlen - len); |
c906108c SS |
4546 | } |
4547 | myaddr += todo; | |
4548 | memaddr += todo; | |
4549 | len -= todo; | |
4550 | } | |
4551 | return origlen; | |
4552 | } | |
4553 | \f | |
4554 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
23860348 MS |
4555 | transferring to or from debugger address BUFFER. Write to inferior |
4556 | if SHOULD_WRITE is nonzero. Returns length of data written or | |
4557 | read; 0 for error. TARGET is unused. */ | |
392a587b | 4558 | |
c906108c | 4559 | static int |
961cb7b5 | 4560 | remote_xfer_memory (CORE_ADDR mem_addr, gdb_byte *buffer, int mem_len, |
0a65a603 | 4561 | int should_write, struct mem_attrib *attrib, |
29e57380 | 4562 | struct target_ops *target) |
c906108c | 4563 | { |
4930751a C |
4564 | int res; |
4565 | ||
4930751a | 4566 | if (should_write) |
b2182ed2 | 4567 | res = remote_write_bytes (mem_addr, buffer, mem_len); |
4930751a | 4568 | else |
b2182ed2 | 4569 | res = remote_read_bytes (mem_addr, buffer, mem_len); |
4930751a C |
4570 | |
4571 | return res; | |
c906108c SS |
4572 | } |
4573 | ||
a76d924d DJ |
4574 | /* Sends a packet with content determined by the printf format string |
4575 | FORMAT and the remaining arguments, then gets the reply. Returns | |
4576 | whether the packet was a success, a failure, or unknown. */ | |
4577 | ||
4578 | enum packet_result | |
4579 | remote_send_printf (const char *format, ...) | |
4580 | { | |
4581 | struct remote_state *rs = get_remote_state (); | |
4582 | int max_size = get_remote_packet_size (); | |
4583 | ||
4584 | va_list ap; | |
4585 | va_start (ap, format); | |
4586 | ||
4587 | rs->buf[0] = '\0'; | |
4588 | if (vsnprintf (rs->buf, max_size, format, ap) >= max_size) | |
4589 | internal_error (__FILE__, __LINE__, "Too long remote packet."); | |
4590 | ||
4591 | if (putpkt (rs->buf) < 0) | |
4592 | error (_("Communication problem with target.")); | |
4593 | ||
4594 | rs->buf[0] = '\0'; | |
4595 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4596 | ||
4597 | return packet_check_result (rs->buf); | |
4598 | } | |
4599 | ||
4600 | static void | |
4601 | restore_remote_timeout (void *p) | |
4602 | { | |
4603 | int value = *(int *)p; | |
4604 | remote_timeout = value; | |
4605 | } | |
4606 | ||
4607 | /* Flash writing can take quite some time. We'll set | |
4608 | effectively infinite timeout for flash operations. | |
4609 | In future, we'll need to decide on a better approach. */ | |
4610 | static const int remote_flash_timeout = 1000; | |
4611 | ||
4612 | static void | |
4613 | remote_flash_erase (struct target_ops *ops, | |
4614 | ULONGEST address, LONGEST length) | |
4615 | { | |
4616 | int saved_remote_timeout = remote_timeout; | |
4617 | enum packet_result ret; | |
4618 | ||
4619 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
4620 | &saved_remote_timeout); | |
4621 | remote_timeout = remote_flash_timeout; | |
4622 | ||
4623 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
4624 | paddr (address), | |
4625 | phex (length, 4)); | |
4626 | switch (ret) | |
4627 | { | |
4628 | case PACKET_UNKNOWN: | |
4629 | error (_("Remote target does not support flash erase")); | |
4630 | case PACKET_ERROR: | |
4631 | error (_("Error erasing flash with vFlashErase packet")); | |
4632 | default: | |
4633 | break; | |
4634 | } | |
4635 | ||
4636 | do_cleanups (back_to); | |
4637 | } | |
4638 | ||
4639 | static LONGEST | |
4640 | remote_flash_write (struct target_ops *ops, | |
4641 | ULONGEST address, LONGEST length, | |
4642 | const gdb_byte *data) | |
4643 | { | |
4644 | int saved_remote_timeout = remote_timeout; | |
4645 | int ret; | |
4646 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
4647 | &saved_remote_timeout); | |
4648 | ||
4649 | remote_timeout = remote_flash_timeout; | |
4650 | ret = remote_write_bytes_aux ("vFlashWrite:", address, data, length, 'X', 0); | |
4651 | do_cleanups (back_to); | |
4652 | ||
4653 | return ret; | |
4654 | } | |
4655 | ||
4656 | static void | |
4657 | remote_flash_done (struct target_ops *ops) | |
4658 | { | |
4659 | int saved_remote_timeout = remote_timeout; | |
4660 | int ret; | |
4661 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
4662 | &saved_remote_timeout); | |
4663 | ||
4664 | remote_timeout = remote_flash_timeout; | |
4665 | ret = remote_send_printf ("vFlashDone"); | |
4666 | do_cleanups (back_to); | |
4667 | ||
4668 | switch (ret) | |
4669 | { | |
4670 | case PACKET_UNKNOWN: | |
4671 | error (_("Remote target does not support vFlashDone")); | |
4672 | case PACKET_ERROR: | |
4673 | error (_("Error finishing flash operation")); | |
4674 | default: | |
4675 | break; | |
4676 | } | |
4677 | } | |
4678 | ||
c906108c | 4679 | static void |
fba45db2 | 4680 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
4681 | { |
4682 | puts_filtered ("Debugging a target over a serial line.\n"); | |
4683 | } | |
4684 | \f | |
4685 | /* Stuff for dealing with the packets which are part of this protocol. | |
4686 | See comment at top of file for details. */ | |
4687 | ||
0876f84a | 4688 | /* Read a single character from the remote end. */ |
c906108c SS |
4689 | |
4690 | static int | |
fba45db2 | 4691 | readchar (int timeout) |
c906108c SS |
4692 | { |
4693 | int ch; | |
4694 | ||
2cd58942 | 4695 | ch = serial_readchar (remote_desc, timeout); |
c906108c | 4696 | |
2acceee2 | 4697 | if (ch >= 0) |
0876f84a | 4698 | return ch; |
2acceee2 JM |
4699 | |
4700 | switch ((enum serial_rc) ch) | |
c906108c SS |
4701 | { |
4702 | case SERIAL_EOF: | |
2acceee2 | 4703 | target_mourn_inferior (); |
8a3fe4f8 | 4704 | error (_("Remote connection closed")); |
2acceee2 | 4705 | /* no return */ |
c906108c | 4706 | case SERIAL_ERROR: |
e2e0b3e5 | 4707 | perror_with_name (_("Remote communication error")); |
2acceee2 | 4708 | /* no return */ |
c906108c | 4709 | case SERIAL_TIMEOUT: |
2acceee2 | 4710 | break; |
c906108c | 4711 | } |
2acceee2 | 4712 | return ch; |
c906108c SS |
4713 | } |
4714 | ||
6d820c5c DJ |
4715 | /* Send the command in *BUF to the remote machine, and read the reply |
4716 | into *BUF. Report an error if we get an error reply. Resize | |
4717 | *BUF using xrealloc if necessary to hold the result, and update | |
4718 | *SIZEOF_BUF. */ | |
c906108c SS |
4719 | |
4720 | static void | |
6d820c5c DJ |
4721 | remote_send (char **buf, |
4722 | long *sizeof_buf) | |
c906108c | 4723 | { |
6d820c5c | 4724 | putpkt (*buf); |
c2d11a7d | 4725 | getpkt (buf, sizeof_buf, 0); |
c906108c | 4726 | |
6d820c5c DJ |
4727 | if ((*buf)[0] == 'E') |
4728 | error (_("Remote failure reply: %s"), *buf); | |
c906108c SS |
4729 | } |
4730 | ||
4731 | /* Display a null-terminated packet on stdout, for debugging, using C | |
4732 | string notation. */ | |
4733 | ||
4734 | static void | |
fba45db2 | 4735 | print_packet (char *buf) |
c906108c SS |
4736 | { |
4737 | puts_filtered ("\""); | |
43e526b9 | 4738 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
4739 | puts_filtered ("\""); |
4740 | } | |
4741 | ||
4742 | int | |
fba45db2 | 4743 | putpkt (char *buf) |
c906108c SS |
4744 | { |
4745 | return putpkt_binary (buf, strlen (buf)); | |
4746 | } | |
4747 | ||
4748 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 4749 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 4750 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
4751 | and for a possible /0 if we are debugging (remote_debug) and want |
4752 | to print the sent packet as a string. */ | |
c906108c SS |
4753 | |
4754 | static int | |
fba45db2 | 4755 | putpkt_binary (char *buf, int cnt) |
c906108c | 4756 | { |
2d717e4f | 4757 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4758 | int i; |
4759 | unsigned char csum = 0; | |
11cf8741 | 4760 | char *buf2 = alloca (cnt + 6); |
085dd6e6 | 4761 | |
c906108c SS |
4762 | int ch; |
4763 | int tcount = 0; | |
4764 | char *p; | |
4765 | ||
2d717e4f DJ |
4766 | /* We're sending out a new packet. Make sure we don't look at a |
4767 | stale cached response. */ | |
4768 | rs->cached_wait_status = 0; | |
4769 | ||
c906108c SS |
4770 | /* Copy the packet into buffer BUF2, encapsulating it |
4771 | and giving it a checksum. */ | |
4772 | ||
c906108c SS |
4773 | p = buf2; |
4774 | *p++ = '$'; | |
4775 | ||
4776 | for (i = 0; i < cnt; i++) | |
4777 | { | |
4778 | csum += buf[i]; | |
4779 | *p++ = buf[i]; | |
4780 | } | |
4781 | *p++ = '#'; | |
4782 | *p++ = tohex ((csum >> 4) & 0xf); | |
4783 | *p++ = tohex (csum & 0xf); | |
4784 | ||
4785 | /* Send it over and over until we get a positive ack. */ | |
4786 | ||
4787 | while (1) | |
4788 | { | |
4789 | int started_error_output = 0; | |
4790 | ||
4791 | if (remote_debug) | |
4792 | { | |
4793 | *p = '\0'; | |
43e526b9 JM |
4794 | fprintf_unfiltered (gdb_stdlog, "Sending packet: "); |
4795 | fputstrn_unfiltered (buf2, p - buf2, 0, gdb_stdlog); | |
d4f3574e | 4796 | fprintf_unfiltered (gdb_stdlog, "..."); |
0f71a2f6 | 4797 | gdb_flush (gdb_stdlog); |
c906108c | 4798 | } |
2cd58942 | 4799 | if (serial_write (remote_desc, buf2, p - buf2)) |
e2e0b3e5 | 4800 | perror_with_name (_("putpkt: write failed")); |
c906108c | 4801 | |
a6f3e723 SL |
4802 | /* If this is a no acks version of the remote protocol, send the |
4803 | packet and move on. */ | |
4804 | if (rs->noack_mode) | |
4805 | break; | |
4806 | ||
23860348 | 4807 | /* Read until either a timeout occurs (-2) or '+' is read. */ |
c906108c SS |
4808 | while (1) |
4809 | { | |
4810 | ch = readchar (remote_timeout); | |
4811 | ||
c5aa993b | 4812 | if (remote_debug) |
c906108c SS |
4813 | { |
4814 | switch (ch) | |
4815 | { | |
4816 | case '+': | |
1216fa2c | 4817 | case '-': |
c906108c SS |
4818 | case SERIAL_TIMEOUT: |
4819 | case '$': | |
4820 | if (started_error_output) | |
4821 | { | |
4822 | putchar_unfiltered ('\n'); | |
4823 | started_error_output = 0; | |
4824 | } | |
4825 | } | |
4826 | } | |
4827 | ||
4828 | switch (ch) | |
4829 | { | |
4830 | case '+': | |
4831 | if (remote_debug) | |
0f71a2f6 | 4832 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 4833 | return 1; |
1216fa2c AC |
4834 | case '-': |
4835 | if (remote_debug) | |
4836 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
c906108c | 4837 | case SERIAL_TIMEOUT: |
c5aa993b | 4838 | tcount++; |
c906108c SS |
4839 | if (tcount > 3) |
4840 | return 0; | |
23860348 | 4841 | break; /* Retransmit buffer. */ |
c906108c SS |
4842 | case '$': |
4843 | { | |
40e3f985 | 4844 | if (remote_debug) |
2bc416ba | 4845 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 4846 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
4847 | /* It's probably an old response sent because an ACK |
4848 | was lost. Gobble up the packet and ack it so it | |
4849 | doesn't get retransmitted when we resend this | |
4850 | packet. */ | |
6d820c5c | 4851 | skip_frame (); |
d6f7abdf | 4852 | serial_write (remote_desc, "+", 1); |
23860348 | 4853 | continue; /* Now, go look for +. */ |
c906108c SS |
4854 | } |
4855 | default: | |
4856 | if (remote_debug) | |
4857 | { | |
4858 | if (!started_error_output) | |
4859 | { | |
4860 | started_error_output = 1; | |
0f71a2f6 | 4861 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 4862 | } |
0f71a2f6 | 4863 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
4864 | } |
4865 | continue; | |
4866 | } | |
23860348 | 4867 | break; /* Here to retransmit. */ |
c906108c SS |
4868 | } |
4869 | ||
4870 | #if 0 | |
4871 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
4872 | able to get out next time we call QUIT, without anything as |
4873 | violent as interrupt_query. If we want to provide a way out of | |
4874 | here without getting to the next QUIT, it should be based on | |
4875 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
4876 | if (quit_flag) |
4877 | { | |
4878 | quit_flag = 0; | |
4879 | interrupt_query (); | |
4880 | } | |
4881 | #endif | |
4882 | } | |
a6f3e723 | 4883 | return 0; |
c906108c SS |
4884 | } |
4885 | ||
6d820c5c DJ |
4886 | /* Come here after finding the start of a frame when we expected an |
4887 | ack. Do our best to discard the rest of this packet. */ | |
4888 | ||
4889 | static void | |
4890 | skip_frame (void) | |
4891 | { | |
4892 | int c; | |
4893 | ||
4894 | while (1) | |
4895 | { | |
4896 | c = readchar (remote_timeout); | |
4897 | switch (c) | |
4898 | { | |
4899 | case SERIAL_TIMEOUT: | |
4900 | /* Nothing we can do. */ | |
4901 | return; | |
4902 | case '#': | |
4903 | /* Discard the two bytes of checksum and stop. */ | |
4904 | c = readchar (remote_timeout); | |
4905 | if (c >= 0) | |
4906 | c = readchar (remote_timeout); | |
4907 | ||
4908 | return; | |
4909 | case '*': /* Run length encoding. */ | |
4910 | /* Discard the repeat count. */ | |
4911 | c = readchar (remote_timeout); | |
4912 | if (c < 0) | |
4913 | return; | |
4914 | break; | |
4915 | default: | |
4916 | /* A regular character. */ | |
4917 | break; | |
4918 | } | |
4919 | } | |
4920 | } | |
4921 | ||
c906108c | 4922 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
4923 | into *BUF, verifying the checksum, length, and handling run-length |
4924 | compression. NUL terminate the buffer. If there is not enough room, | |
4925 | expand *BUF using xrealloc. | |
c906108c | 4926 | |
c2d11a7d JM |
4927 | Returns -1 on error, number of characters in buffer (ignoring the |
4928 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 4929 | SERIAL status indications). */ |
c2d11a7d JM |
4930 | |
4931 | static long | |
6d820c5c DJ |
4932 | read_frame (char **buf_p, |
4933 | long *sizeof_buf) | |
c906108c SS |
4934 | { |
4935 | unsigned char csum; | |
c2d11a7d | 4936 | long bc; |
c906108c | 4937 | int c; |
6d820c5c | 4938 | char *buf = *buf_p; |
a6f3e723 | 4939 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4940 | |
4941 | csum = 0; | |
c2d11a7d | 4942 | bc = 0; |
c906108c SS |
4943 | |
4944 | while (1) | |
4945 | { | |
4946 | c = readchar (remote_timeout); | |
c906108c SS |
4947 | switch (c) |
4948 | { | |
4949 | case SERIAL_TIMEOUT: | |
4950 | if (remote_debug) | |
0f71a2f6 | 4951 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 4952 | return -1; |
c906108c SS |
4953 | case '$': |
4954 | if (remote_debug) | |
0f71a2f6 JM |
4955 | fputs_filtered ("Saw new packet start in middle of old one\n", |
4956 | gdb_stdlog); | |
23860348 | 4957 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
4958 | case '#': |
4959 | { | |
4960 | unsigned char pktcsum; | |
e1b09194 AC |
4961 | int check_0 = 0; |
4962 | int check_1 = 0; | |
c906108c | 4963 | |
c2d11a7d | 4964 | buf[bc] = '\0'; |
c906108c | 4965 | |
e1b09194 AC |
4966 | check_0 = readchar (remote_timeout); |
4967 | if (check_0 >= 0) | |
4968 | check_1 = readchar (remote_timeout); | |
802188a7 | 4969 | |
e1b09194 AC |
4970 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
4971 | { | |
4972 | if (remote_debug) | |
2bc416ba | 4973 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 4974 | gdb_stdlog); |
e1b09194 AC |
4975 | return -1; |
4976 | } | |
4977 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
4978 | { |
4979 | if (remote_debug) | |
2bc416ba | 4980 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 4981 | gdb_stdlog); |
40e3f985 FN |
4982 | return -1; |
4983 | } | |
c906108c | 4984 | |
a6f3e723 SL |
4985 | /* Don't recompute the checksum; with no ack packets we |
4986 | don't have any way to indicate a packet retransmission | |
4987 | is necessary. */ | |
4988 | if (rs->noack_mode) | |
4989 | return bc; | |
4990 | ||
e1b09194 | 4991 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 4992 | if (csum == pktcsum) |
c2d11a7d | 4993 | return bc; |
c906108c | 4994 | |
c5aa993b | 4995 | if (remote_debug) |
c906108c | 4996 | { |
0f71a2f6 | 4997 | fprintf_filtered (gdb_stdlog, |
c5aa993b | 4998 | "Bad checksum, sentsum=0x%x, csum=0x%x, buf=", |
0f71a2f6 | 4999 | pktcsum, csum); |
0876f84a | 5000 | fputstrn_filtered (buf, bc, 0, gdb_stdlog); |
0f71a2f6 | 5001 | fputs_filtered ("\n", gdb_stdlog); |
c906108c | 5002 | } |
c2d11a7d | 5003 | /* Number of characters in buffer ignoring trailing |
23860348 | 5004 | NULL. */ |
c2d11a7d | 5005 | return -1; |
c906108c | 5006 | } |
23860348 | 5007 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
5008 | { |
5009 | int repeat; | |
5010 | csum += c; | |
c906108c | 5011 | |
b4501125 AC |
5012 | c = readchar (remote_timeout); |
5013 | csum += c; | |
23860348 | 5014 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 5015 | |
23860348 | 5016 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 5017 | |
6d820c5c | 5018 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 5019 | { |
6d820c5c DJ |
5020 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
5021 | { | |
5022 | /* Make some more room in the buffer. */ | |
5023 | *sizeof_buf += repeat; | |
5024 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
5025 | buf = *buf_p; | |
5026 | } | |
5027 | ||
c2d11a7d JM |
5028 | memset (&buf[bc], buf[bc - 1], repeat); |
5029 | bc += repeat; | |
c2c6d25f JM |
5030 | continue; |
5031 | } | |
5032 | ||
c2d11a7d | 5033 | buf[bc] = '\0'; |
6d820c5c | 5034 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 5035 | return -1; |
c2c6d25f | 5036 | } |
c906108c | 5037 | default: |
6d820c5c | 5038 | if (bc >= *sizeof_buf - 1) |
c906108c | 5039 | { |
6d820c5c DJ |
5040 | /* Make some more room in the buffer. */ |
5041 | *sizeof_buf *= 2; | |
5042 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
5043 | buf = *buf_p; | |
c906108c SS |
5044 | } |
5045 | ||
6d820c5c DJ |
5046 | buf[bc++] = c; |
5047 | csum += c; | |
5048 | continue; | |
c906108c SS |
5049 | } |
5050 | } | |
5051 | } | |
5052 | ||
5053 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
5054 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
5055 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
5056 | rather than timing out; this is used (in synchronous mode) to wait | |
5057 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
5058 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
5059 | don't have to change all the calls to getpkt to deal with the | |
5060 | return value, because at the moment I don't know what the right | |
23860348 | 5061 | thing to do it for those. */ |
c906108c | 5062 | void |
6d820c5c DJ |
5063 | getpkt (char **buf, |
5064 | long *sizeof_buf, | |
c2d11a7d | 5065 | int forever) |
d9fcf2fb JM |
5066 | { |
5067 | int timed_out; | |
5068 | ||
5069 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
5070 | } | |
5071 | ||
5072 | ||
5073 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
5074 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
5075 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
5076 | rather than timing out; this is used (in synchronous mode) to wait | |
5077 | for a target that is is executing user code to stop. If FOREVER == | |
5078 | 0, this function is allowed to time out gracefully and return an | |
0876f84a DJ |
5079 | indication of this to the caller. Otherwise return the number |
5080 | of bytes read. */ | |
3172dc30 | 5081 | static int |
6d820c5c | 5082 | getpkt_sane (char **buf, long *sizeof_buf, int forever) |
c906108c | 5083 | { |
2d717e4f | 5084 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
5085 | int c; |
5086 | int tries; | |
5087 | int timeout; | |
5088 | int val; | |
5089 | ||
2d717e4f DJ |
5090 | /* We're reading a new response. Make sure we don't look at a |
5091 | previously cached response. */ | |
5092 | rs->cached_wait_status = 0; | |
5093 | ||
6d820c5c | 5094 | strcpy (*buf, "timeout"); |
c906108c SS |
5095 | |
5096 | if (forever) | |
5097 | { | |
c906108c | 5098 | timeout = watchdog > 0 ? watchdog : -1; |
c906108c SS |
5099 | } |
5100 | ||
5101 | else | |
5102 | timeout = remote_timeout; | |
5103 | ||
5104 | #define MAX_TRIES 3 | |
5105 | ||
5106 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
5107 | { | |
5108 | /* This can loop forever if the remote side sends us characters | |
23860348 MS |
5109 | continuously, but if it pauses, we'll get a zero from |
5110 | readchar because of timeout. Then we'll count that as a | |
5111 | retry. */ | |
c906108c | 5112 | |
23860348 MS |
5113 | /* Note that we will only wait forever prior to the start of a |
5114 | packet. After that, we expect characters to arrive at a | |
5115 | brisk pace. They should show up within remote_timeout | |
5116 | intervals. */ | |
c906108c SS |
5117 | |
5118 | do | |
5119 | { | |
5120 | c = readchar (timeout); | |
5121 | ||
5122 | if (c == SERIAL_TIMEOUT) | |
5123 | { | |
23860348 | 5124 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 5125 | { |
2acceee2 | 5126 | QUIT; |
c906108c | 5127 | target_mourn_inferior (); |
489eaeba | 5128 | error (_("Watchdog timeout has expired. Target detached.")); |
c906108c | 5129 | } |
c906108c | 5130 | if (remote_debug) |
0f71a2f6 | 5131 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c SS |
5132 | goto retry; |
5133 | } | |
5134 | } | |
5135 | while (c != '$'); | |
5136 | ||
5137 | /* We've found the start of a packet, now collect the data. */ | |
5138 | ||
c2d11a7d | 5139 | val = read_frame (buf, sizeof_buf); |
c906108c | 5140 | |
c2d11a7d | 5141 | if (val >= 0) |
c906108c SS |
5142 | { |
5143 | if (remote_debug) | |
43e526b9 JM |
5144 | { |
5145 | fprintf_unfiltered (gdb_stdlog, "Packet received: "); | |
0876f84a | 5146 | fputstrn_unfiltered (*buf, val, 0, gdb_stdlog); |
43e526b9 JM |
5147 | fprintf_unfiltered (gdb_stdlog, "\n"); |
5148 | } | |
a6f3e723 SL |
5149 | |
5150 | /* Skip the ack char if we're in no-ack mode. */ | |
5151 | if (!rs->noack_mode) | |
5152 | serial_write (remote_desc, "+", 1); | |
0876f84a | 5153 | return val; |
c906108c SS |
5154 | } |
5155 | ||
5156 | /* Try the whole thing again. */ | |
5157 | retry: | |
a6f3e723 SL |
5158 | /* Skip the nack char if we're in no-ack mode. */ |
5159 | if (!rs->noack_mode) | |
5160 | serial_write (remote_desc, "-", 1); | |
c906108c SS |
5161 | } |
5162 | ||
2bc416ba | 5163 | /* We have tried hard enough, and just can't receive the packet. |
23860348 | 5164 | Give up. */ |
c906108c | 5165 | |
a3f17187 | 5166 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); |
a6f3e723 SL |
5167 | |
5168 | /* Skip the ack char if we're in no-ack mode. */ | |
5169 | if (!rs->noack_mode) | |
5170 | serial_write (remote_desc, "+", 1); | |
0876f84a | 5171 | return -1; |
c906108c SS |
5172 | } |
5173 | \f | |
5174 | static void | |
fba45db2 | 5175 | remote_kill (void) |
43ff13b4 | 5176 | { |
23860348 | 5177 | /* Unregister the file descriptor from the event loop. */ |
ed9a39eb | 5178 | if (target_is_async_p ()) |
2cd58942 | 5179 | serial_async (remote_desc, NULL, 0); |
43ff13b4 | 5180 | |
23860348 MS |
5181 | /* Use catch_errors so the user can quit from gdb even when we |
5182 | aren't on speaking terms with the remote system. */ | |
c5aa993b | 5183 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
5184 | |
5185 | /* Don't wait for it to die. I'm not really sure it matters whether | |
5186 | we do or not. For the existing stubs, kill is a noop. */ | |
5187 | target_mourn_inferior (); | |
5188 | } | |
5189 | ||
c906108c | 5190 | static void |
fba45db2 | 5191 | remote_mourn (void) |
c906108c SS |
5192 | { |
5193 | remote_mourn_1 (&remote_ops); | |
5194 | } | |
5195 | ||
c906108c SS |
5196 | /* Worker function for remote_mourn. */ |
5197 | static void | |
fba45db2 | 5198 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
5199 | { |
5200 | unpush_target (target); | |
5201 | generic_mourn_inferior (); | |
5202 | } | |
5203 | ||
2d717e4f DJ |
5204 | static void |
5205 | extended_remote_mourn_1 (struct target_ops *target) | |
5206 | { | |
5207 | struct remote_state *rs = get_remote_state (); | |
c906108c | 5208 | |
2d717e4f DJ |
5209 | /* Unlike "target remote", we do not want to unpush the target; then |
5210 | the next time the user says "run", we won't be connected. */ | |
5211 | ||
5212 | /* Call common code to mark the inferior as not running. */ | |
5213 | generic_mourn_inferior (); | |
5214 | ||
5215 | /* Check whether the target is running now - some remote stubs | |
5216 | automatically restart after kill. */ | |
5217 | putpkt ("?"); | |
5218 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5219 | ||
5220 | if (rs->buf[0] == 'S' || rs->buf[0] == 'T') | |
5221 | { | |
5222 | /* Assume that the target has been restarted. Set inferior_ptid | |
5223 | so that bits of core GDB realizes there's something here, e.g., | |
5224 | so that the user can say "kill" again. */ | |
c0a2216e PA |
5225 | inferior_ptid = remote_current_thread (magic_null_ptid); |
5226 | add_thread_silent (inferior_ptid); | |
2d717e4f DJ |
5227 | } |
5228 | else | |
5229 | { | |
5230 | /* Mark this (still pushed) target as not executable until we | |
5231 | restart it. */ | |
5232 | target_mark_exited (target); | |
5233 | } | |
5234 | } | |
c906108c SS |
5235 | |
5236 | static void | |
2d717e4f | 5237 | extended_remote_mourn (void) |
c906108c | 5238 | { |
2d717e4f DJ |
5239 | extended_remote_mourn_1 (&extended_remote_ops); |
5240 | } | |
c906108c | 5241 | |
2d717e4f DJ |
5242 | static int |
5243 | extended_remote_run (char *args) | |
5244 | { | |
5245 | struct remote_state *rs = get_remote_state (); | |
5246 | char *p; | |
5247 | int len; | |
c906108c | 5248 | |
2d717e4f DJ |
5249 | /* If the user has disabled vRun support, or we have detected that |
5250 | support is not available, do not try it. */ | |
5251 | if (remote_protocol_packets[PACKET_vRun].support == PACKET_DISABLE) | |
5252 | return -1; | |
424163ea | 5253 | |
2d717e4f DJ |
5254 | strcpy (rs->buf, "vRun;"); |
5255 | len = strlen (rs->buf); | |
c906108c | 5256 | |
2d717e4f DJ |
5257 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
5258 | error (_("Remote file name too long for run packet")); | |
5259 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf + len, 0); | |
5260 | ||
5261 | if (*args) | |
5262 | { | |
5263 | struct cleanup *back_to; | |
5264 | int i; | |
5265 | char **argv; | |
5266 | ||
5267 | argv = buildargv (args); | |
5268 | back_to = make_cleanup ((void (*) (void *)) freeargv, argv); | |
5269 | for (i = 0; argv[i] != NULL; i++) | |
5270 | { | |
5271 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
5272 | error (_("Argument list too long for run packet")); | |
5273 | rs->buf[len++] = ';'; | |
5274 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf + len, 0); | |
5275 | } | |
5276 | do_cleanups (back_to); | |
5277 | } | |
5278 | ||
5279 | rs->buf[len++] = '\0'; | |
5280 | ||
5281 | putpkt (rs->buf); | |
5282 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5283 | ||
5284 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun]) == PACKET_OK) | |
5285 | { | |
5286 | /* We have a wait response; we don't need it, though. All is well. */ | |
5287 | return 0; | |
5288 | } | |
5289 | else if (remote_protocol_packets[PACKET_vRun].support == PACKET_DISABLE) | |
5290 | /* It wasn't disabled before, but it is now. */ | |
5291 | return -1; | |
5292 | else | |
5293 | { | |
5294 | if (remote_exec_file[0] == '\0') | |
5295 | error (_("Running the default executable on the remote target failed; " | |
5296 | "try \"set remote exec-file\"?")); | |
5297 | else | |
5298 | error (_("Running \"%s\" on the remote target failed"), | |
5299 | remote_exec_file); | |
5300 | } | |
c906108c SS |
5301 | } |
5302 | ||
2d717e4f DJ |
5303 | /* In the extended protocol we want to be able to do things like |
5304 | "run" and have them basically work as expected. So we need | |
5305 | a special create_inferior function. We support changing the | |
5306 | executable file and the command line arguments, but not the | |
5307 | environment. */ | |
5308 | ||
43ff13b4 | 5309 | static void |
2d717e4f | 5310 | extended_remote_create_inferior_1 (char *exec_file, char *args, |
75c99385 | 5311 | char **env, int from_tty) |
43ff13b4 | 5312 | { |
43ff13b4 | 5313 | /* If running asynchronously, register the target file descriptor |
23860348 | 5314 | with the event loop. */ |
75c99385 | 5315 | if (target_can_async_p ()) |
2acceee2 | 5316 | target_async (inferior_event_handler, 0); |
43ff13b4 JM |
5317 | |
5318 | /* Now restart the remote server. */ | |
2d717e4f DJ |
5319 | if (extended_remote_run (args) == -1) |
5320 | { | |
5321 | /* vRun was not supported. Fail if we need it to do what the | |
5322 | user requested. */ | |
5323 | if (remote_exec_file[0]) | |
5324 | error (_("Remote target does not support \"set remote exec-file\"")); | |
5325 | if (args[0]) | |
5326 | error (_("Remote target does not support \"set args\" or run <ARGS>")); | |
43ff13b4 | 5327 | |
2d717e4f DJ |
5328 | /* Fall back to "R". */ |
5329 | extended_remote_restart (); | |
5330 | } | |
424163ea | 5331 | |
45280a52 DJ |
5332 | /* Clean up from the last time we ran, before we mark the target |
5333 | running again. This will mark breakpoints uninserted, and | |
5334 | get_offsets may insert breakpoints. */ | |
5335 | init_thread_list (); | |
5336 | init_wait_for_inferior (); | |
5337 | ||
2d717e4f | 5338 | /* Now mark the inferior as running before we do anything else. */ |
df7df359 | 5339 | attach_flag = 0; |
79d7f229 | 5340 | inferior_ptid = magic_null_ptid; |
c0a2216e PA |
5341 | |
5342 | add_thread_silent (inferior_ptid); | |
5343 | ||
75c99385 | 5344 | target_mark_running (&extended_remote_ops); |
2d717e4f DJ |
5345 | |
5346 | /* Get updated offsets, if the stub uses qOffsets. */ | |
5347 | get_offsets (); | |
2d717e4f DJ |
5348 | } |
5349 | ||
5350 | static void | |
5351 | extended_remote_create_inferior (char *exec_file, char *args, | |
5352 | char **env, int from_tty) | |
5353 | { | |
75c99385 | 5354 | extended_remote_create_inferior_1 (exec_file, args, env, from_tty); |
43ff13b4 | 5355 | } |
c906108c | 5356 | \f |
c5aa993b | 5357 | |
8181d85f DJ |
5358 | /* Insert a breakpoint. On targets that have software breakpoint |
5359 | support, we ask the remote target to do the work; on targets | |
5360 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c SS |
5361 | |
5362 | static int | |
8181d85f | 5363 | remote_insert_breakpoint (struct bp_target_info *bp_tgt) |
c906108c | 5364 | { |
d471ea57 AC |
5365 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
5366 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
5367 | fails, and the user has explicitly requested the Z support then | |
23860348 | 5368 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 5369 | |
444abaca | 5370 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 5371 | { |
7c0f6dcc | 5372 | CORE_ADDR addr = bp_tgt->placed_address; |
4fff2411 JZ |
5373 | struct remote_state *rs; |
5374 | char *p; | |
7c0f6dcc | 5375 | int bpsize; |
4fff2411 | 5376 | |
1cf3db46 | 5377 | gdbarch_breakpoint_from_pc (target_gdbarch, &addr, &bpsize); |
4fff2411 JZ |
5378 | |
5379 | rs = get_remote_state (); | |
5380 | p = rs->buf; | |
802188a7 | 5381 | |
96baa820 JM |
5382 | *(p++) = 'Z'; |
5383 | *(p++) = '0'; | |
5384 | *(p++) = ','; | |
7c0f6dcc | 5385 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 5386 | p += hexnumstr (p, addr); |
7c0f6dcc | 5387 | sprintf (p, ",%d", bpsize); |
802188a7 | 5388 | |
6d820c5c DJ |
5389 | putpkt (rs->buf); |
5390 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5391 | |
6d820c5c | 5392 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 5393 | { |
d471ea57 AC |
5394 | case PACKET_ERROR: |
5395 | return -1; | |
5396 | case PACKET_OK: | |
7c0f6dcc JL |
5397 | bp_tgt->placed_address = addr; |
5398 | bp_tgt->placed_size = bpsize; | |
d471ea57 AC |
5399 | return 0; |
5400 | case PACKET_UNKNOWN: | |
5401 | break; | |
96baa820 JM |
5402 | } |
5403 | } | |
c906108c | 5404 | |
8181d85f | 5405 | return memory_insert_breakpoint (bp_tgt); |
c906108c SS |
5406 | } |
5407 | ||
5408 | static int | |
8181d85f | 5409 | remote_remove_breakpoint (struct bp_target_info *bp_tgt) |
c906108c | 5410 | { |
8181d85f | 5411 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 5412 | struct remote_state *rs = get_remote_state (); |
96baa820 JM |
5413 | int bp_size; |
5414 | ||
444abaca | 5415 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 5416 | { |
6d820c5c | 5417 | char *p = rs->buf; |
802188a7 | 5418 | |
96baa820 JM |
5419 | *(p++) = 'z'; |
5420 | *(p++) = '0'; | |
5421 | *(p++) = ','; | |
5422 | ||
8181d85f DJ |
5423 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
5424 | p += hexnumstr (p, addr); | |
5425 | sprintf (p, ",%d", bp_tgt->placed_size); | |
802188a7 | 5426 | |
6d820c5c DJ |
5427 | putpkt (rs->buf); |
5428 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5429 | |
6d820c5c | 5430 | return (rs->buf[0] == 'E'); |
96baa820 JM |
5431 | } |
5432 | ||
8181d85f | 5433 | return memory_remove_breakpoint (bp_tgt); |
c906108c SS |
5434 | } |
5435 | ||
d471ea57 AC |
5436 | static int |
5437 | watchpoint_to_Z_packet (int type) | |
5438 | { | |
5439 | switch (type) | |
5440 | { | |
5441 | case hw_write: | |
bb858e6a | 5442 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
5443 | break; |
5444 | case hw_read: | |
bb858e6a | 5445 | return Z_PACKET_READ_WP; |
d471ea57 AC |
5446 | break; |
5447 | case hw_access: | |
bb858e6a | 5448 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
5449 | break; |
5450 | default: | |
8e65ff28 | 5451 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5452 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
5453 | } |
5454 | } | |
5455 | ||
3c3bea1c | 5456 | static int |
fba45db2 | 5457 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 5458 | { |
d01949b6 | 5459 | struct remote_state *rs = get_remote_state (); |
e514a9d6 | 5460 | char *p; |
d471ea57 | 5461 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 5462 | |
444abaca | 5463 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
5cffb350 | 5464 | return -1; |
802188a7 | 5465 | |
6d820c5c DJ |
5466 | sprintf (rs->buf, "Z%x,", packet); |
5467 | p = strchr (rs->buf, '\0'); | |
96baa820 JM |
5468 | addr = remote_address_masked (addr); |
5469 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 5470 | sprintf (p, ",%x", len); |
802188a7 | 5471 | |
6d820c5c DJ |
5472 | putpkt (rs->buf); |
5473 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5474 | |
6d820c5c | 5475 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
5476 | { |
5477 | case PACKET_ERROR: | |
5478 | case PACKET_UNKNOWN: | |
5479 | return -1; | |
5480 | case PACKET_OK: | |
5481 | return 0; | |
5482 | } | |
8e65ff28 | 5483 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5484 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
5485 | } |
5486 | ||
d471ea57 | 5487 | |
3c3bea1c | 5488 | static int |
fba45db2 | 5489 | remote_remove_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 5490 | { |
d01949b6 | 5491 | struct remote_state *rs = get_remote_state (); |
e514a9d6 | 5492 | char *p; |
d471ea57 AC |
5493 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
5494 | ||
444abaca | 5495 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
5cffb350 | 5496 | return -1; |
802188a7 | 5497 | |
6d820c5c DJ |
5498 | sprintf (rs->buf, "z%x,", packet); |
5499 | p = strchr (rs->buf, '\0'); | |
96baa820 JM |
5500 | addr = remote_address_masked (addr); |
5501 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 5502 | sprintf (p, ",%x", len); |
6d820c5c DJ |
5503 | putpkt (rs->buf); |
5504 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5505 | |
6d820c5c | 5506 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
5507 | { |
5508 | case PACKET_ERROR: | |
5509 | case PACKET_UNKNOWN: | |
5510 | return -1; | |
5511 | case PACKET_OK: | |
5512 | return 0; | |
5513 | } | |
8e65ff28 | 5514 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5515 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
5516 | } |
5517 | ||
3c3bea1c | 5518 | |
501eef12 AC |
5519 | int remote_hw_watchpoint_limit = -1; |
5520 | int remote_hw_breakpoint_limit = -1; | |
d471ea57 | 5521 | |
b9362cc7 | 5522 | static int |
3c3bea1c | 5523 | remote_check_watch_resources (int type, int cnt, int ot) |
96baa820 | 5524 | { |
3c3bea1c GS |
5525 | if (type == bp_hardware_breakpoint) |
5526 | { | |
5527 | if (remote_hw_breakpoint_limit == 0) | |
5528 | return 0; | |
501eef12 AC |
5529 | else if (remote_hw_breakpoint_limit < 0) |
5530 | return 1; | |
3c3bea1c GS |
5531 | else if (cnt <= remote_hw_breakpoint_limit) |
5532 | return 1; | |
5533 | } | |
5534 | else | |
5535 | { | |
5536 | if (remote_hw_watchpoint_limit == 0) | |
5537 | return 0; | |
501eef12 AC |
5538 | else if (remote_hw_watchpoint_limit < 0) |
5539 | return 1; | |
3c3bea1c GS |
5540 | else if (ot) |
5541 | return -1; | |
5542 | else if (cnt <= remote_hw_watchpoint_limit) | |
5543 | return 1; | |
5544 | } | |
5545 | return -1; | |
5546 | } | |
5547 | ||
b9362cc7 | 5548 | static int |
3c3bea1c GS |
5549 | remote_stopped_by_watchpoint (void) |
5550 | { | |
5551 | return remote_stopped_by_watchpoint_p; | |
5552 | } | |
5553 | ||
4aa7a7f5 JJ |
5554 | static int |
5555 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 5556 | { |
4aa7a7f5 | 5557 | int rc = 0; |
d983da9c | 5558 | if (remote_stopped_by_watchpoint ()) |
4aa7a7f5 JJ |
5559 | { |
5560 | *addr_p = remote_watch_data_address; | |
5561 | rc = 1; | |
5562 | } | |
5563 | ||
5564 | return rc; | |
3c3bea1c GS |
5565 | } |
5566 | ||
5567 | ||
5568 | static int | |
8181d85f | 5569 | remote_insert_hw_breakpoint (struct bp_target_info *bp_tgt) |
3c3bea1c | 5570 | { |
8181d85f | 5571 | CORE_ADDR addr; |
4fff2411 JZ |
5572 | struct remote_state *rs; |
5573 | char *p; | |
802188a7 | 5574 | |
c8189ed1 | 5575 | /* The length field should be set to the size of a breakpoint |
8181d85f | 5576 | instruction, even though we aren't inserting one ourselves. */ |
c8189ed1 | 5577 | |
3b3b875c | 5578 | gdbarch_breakpoint_from_pc |
1cf3db46 | 5579 | (target_gdbarch, &bp_tgt->placed_address, &bp_tgt->placed_size); |
3c3bea1c | 5580 | |
444abaca | 5581 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 5582 | return -1; |
2bc416ba | 5583 | |
4fff2411 JZ |
5584 | rs = get_remote_state (); |
5585 | p = rs->buf; | |
5586 | ||
96baa820 JM |
5587 | *(p++) = 'Z'; |
5588 | *(p++) = '1'; | |
5589 | *(p++) = ','; | |
802188a7 | 5590 | |
8181d85f | 5591 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 5592 | p += hexnumstr (p, (ULONGEST) addr); |
8181d85f | 5593 | sprintf (p, ",%x", bp_tgt->placed_size); |
96baa820 | 5594 | |
6d820c5c DJ |
5595 | putpkt (rs->buf); |
5596 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5597 | |
6d820c5c | 5598 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
5599 | { |
5600 | case PACKET_ERROR: | |
5601 | case PACKET_UNKNOWN: | |
5602 | return -1; | |
5603 | case PACKET_OK: | |
5604 | return 0; | |
5605 | } | |
8e65ff28 | 5606 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5607 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
5608 | } |
5609 | ||
d471ea57 | 5610 | |
802188a7 | 5611 | static int |
8181d85f | 5612 | remote_remove_hw_breakpoint (struct bp_target_info *bp_tgt) |
96baa820 | 5613 | { |
8181d85f | 5614 | CORE_ADDR addr; |
d01949b6 | 5615 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 5616 | char *p = rs->buf; |
c8189ed1 | 5617 | |
444abaca | 5618 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 5619 | return -1; |
802188a7 | 5620 | |
96baa820 JM |
5621 | *(p++) = 'z'; |
5622 | *(p++) = '1'; | |
5623 | *(p++) = ','; | |
802188a7 | 5624 | |
8181d85f | 5625 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 5626 | p += hexnumstr (p, (ULONGEST) addr); |
8181d85f | 5627 | sprintf (p, ",%x", bp_tgt->placed_size); |
96baa820 | 5628 | |
6d820c5c DJ |
5629 | putpkt (rs->buf); |
5630 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 5631 | |
6d820c5c | 5632 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
5633 | { |
5634 | case PACKET_ERROR: | |
5635 | case PACKET_UNKNOWN: | |
5636 | return -1; | |
5637 | case PACKET_OK: | |
5638 | return 0; | |
5639 | } | |
8e65ff28 | 5640 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5641 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 5642 | } |
96baa820 | 5643 | |
c906108c SS |
5644 | /* Some targets are only capable of doing downloads, and afterwards |
5645 | they switch to the remote serial protocol. This function provides | |
5646 | a clean way to get from the download target to the remote target. | |
5647 | It's basically just a wrapper so that we don't have to expose any | |
5648 | of the internal workings of remote.c. | |
5649 | ||
5650 | Prior to calling this routine, you should shutdown the current | |
5651 | target code, else you will get the "A program is being debugged | |
5652 | already..." message. Usually a call to pop_target() suffices. */ | |
5653 | ||
5654 | void | |
fba45db2 | 5655 | push_remote_target (char *name, int from_tty) |
c906108c | 5656 | { |
a3f17187 | 5657 | printf_filtered (_("Switching to remote protocol\n")); |
c906108c SS |
5658 | remote_open (name, from_tty); |
5659 | } | |
5660 | ||
23860348 | 5661 | /* Table used by the crc32 function to calcuate the checksum. */ |
c906108c | 5662 | |
c5aa993b JM |
5663 | static unsigned long crc32_table[256] = |
5664 | {0, 0}; | |
c906108c SS |
5665 | |
5666 | static unsigned long | |
fba45db2 | 5667 | crc32 (unsigned char *buf, int len, unsigned int crc) |
c906108c | 5668 | { |
c5aa993b | 5669 | if (!crc32_table[1]) |
c906108c | 5670 | { |
23860348 | 5671 | /* Initialize the CRC table and the decoding table. */ |
c906108c SS |
5672 | int i, j; |
5673 | unsigned int c; | |
5674 | ||
5675 | for (i = 0; i < 256; i++) | |
c5aa993b JM |
5676 | { |
5677 | for (c = i << 24, j = 8; j > 0; --j) | |
5678 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
5679 | crc32_table[i] = c; | |
5680 | } | |
c906108c SS |
5681 | } |
5682 | ||
5683 | while (len--) | |
5684 | { | |
5685 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |
5686 | buf++; | |
5687 | } | |
5688 | return crc; | |
5689 | } | |
5690 | ||
5691 | /* compare-sections command | |
5692 | ||
5693 | With no arguments, compares each loadable section in the exec bfd | |
5694 | with the same memory range on the target, and reports mismatches. | |
5695 | Useful for verifying the image on the target against the exec file. | |
5696 | Depends on the target understanding the new "qCRC:" request. */ | |
5697 | ||
e514a9d6 JM |
5698 | /* FIXME: cagney/1999-10-26: This command should be broken down into a |
5699 | target method (target verify memory) and generic version of the | |
5700 | actual command. This will allow other high-level code (especially | |
23860348 | 5701 | generic_load()) to make use of this target functionality. */ |
e514a9d6 | 5702 | |
c906108c | 5703 | static void |
fba45db2 | 5704 | compare_sections_command (char *args, int from_tty) |
c906108c | 5705 | { |
d01949b6 | 5706 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
5707 | asection *s; |
5708 | unsigned long host_crc, target_crc; | |
5709 | extern bfd *exec_bfd; | |
5710 | struct cleanup *old_chain; | |
085dd6e6 JM |
5711 | char *tmp; |
5712 | char *sectdata; | |
ce359b09 | 5713 | const char *sectname; |
c906108c SS |
5714 | bfd_size_type size; |
5715 | bfd_vma lma; | |
5716 | int matched = 0; | |
5717 | int mismatched = 0; | |
5718 | ||
5719 | if (!exec_bfd) | |
8a3fe4f8 | 5720 | error (_("command cannot be used without an exec file")); |
c906108c SS |
5721 | if (!current_target.to_shortname || |
5722 | strcmp (current_target.to_shortname, "remote") != 0) | |
8a3fe4f8 | 5723 | error (_("command can only be used with remote target")); |
c906108c | 5724 | |
c5aa993b | 5725 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
5726 | { |
5727 | if (!(s->flags & SEC_LOAD)) | |
c5aa993b | 5728 | continue; /* skip non-loadable section */ |
c906108c | 5729 | |
2c500098 | 5730 | size = bfd_get_section_size (s); |
c906108c | 5731 | if (size == 0) |
c5aa993b | 5732 | continue; /* skip zero-length section */ |
c906108c | 5733 | |
ce359b09 | 5734 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 5735 | if (args && strcmp (args, sectname) != 0) |
c5aa993b | 5736 | continue; /* not the section selected by user */ |
c906108c | 5737 | |
c5aa993b | 5738 | matched = 1; /* do this section */ |
c906108c | 5739 | lma = s->lma; |
23860348 | 5740 | /* FIXME: assumes lma can fit into long. */ |
ea9c271d | 5741 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", |
ecbc58df | 5742 | (long) lma, (long) size); |
6d820c5c | 5743 | putpkt (rs->buf); |
c906108c | 5744 | |
23860348 MS |
5745 | /* Be clever; compute the host_crc before waiting for target |
5746 | reply. */ | |
c906108c | 5747 | sectdata = xmalloc (size); |
b8c9b27d | 5748 | old_chain = make_cleanup (xfree, sectdata); |
c906108c SS |
5749 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
5750 | host_crc = crc32 ((unsigned char *) sectdata, size, 0xffffffff); | |
5751 | ||
6d820c5c DJ |
5752 | getpkt (&rs->buf, &rs->buf_size, 0); |
5753 | if (rs->buf[0] == 'E') | |
8a3fe4f8 | 5754 | error (_("target memory fault, section %s, range 0x%s -- 0x%s"), |
823ca731 | 5755 | sectname, paddr (lma), paddr (lma + size)); |
6d820c5c | 5756 | if (rs->buf[0] != 'C') |
8a3fe4f8 | 5757 | error (_("remote target does not support this operation")); |
c906108c | 5758 | |
6d820c5c | 5759 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) |
c906108c SS |
5760 | target_crc = target_crc * 16 + fromhex (*tmp); |
5761 | ||
d4f3574e SS |
5762 | printf_filtered ("Section %s, range 0x%s -- 0x%s: ", |
5763 | sectname, paddr (lma), paddr (lma + size)); | |
c906108c SS |
5764 | if (host_crc == target_crc) |
5765 | printf_filtered ("matched.\n"); | |
5766 | else | |
c5aa993b JM |
5767 | { |
5768 | printf_filtered ("MIS-MATCHED!\n"); | |
5769 | mismatched++; | |
5770 | } | |
c906108c SS |
5771 | |
5772 | do_cleanups (old_chain); | |
5773 | } | |
5774 | if (mismatched > 0) | |
8a3fe4f8 AC |
5775 | warning (_("One or more sections of the remote executable does not match\n\ |
5776 | the loaded file\n")); | |
c906108c | 5777 | if (args && !matched) |
a3f17187 | 5778 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
5779 | } |
5780 | ||
0e7f50da UW |
5781 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
5782 | into remote target. The number of bytes written to the remote | |
5783 | target is returned, or -1 for error. */ | |
5784 | ||
5785 | static LONGEST | |
5786 | remote_write_qxfer (struct target_ops *ops, const char *object_name, | |
5787 | const char *annex, const gdb_byte *writebuf, | |
5788 | ULONGEST offset, LONGEST len, | |
5789 | struct packet_config *packet) | |
5790 | { | |
5791 | int i, buf_len; | |
5792 | ULONGEST n; | |
5793 | gdb_byte *wbuf; | |
5794 | struct remote_state *rs = get_remote_state (); | |
5795 | int max_size = get_memory_write_packet_size (); | |
5796 | ||
5797 | if (packet->support == PACKET_DISABLE) | |
5798 | return -1; | |
5799 | ||
5800 | /* Insert header. */ | |
5801 | i = snprintf (rs->buf, max_size, | |
5802 | "qXfer:%s:write:%s:%s:", | |
5803 | object_name, annex ? annex : "", | |
5804 | phex_nz (offset, sizeof offset)); | |
5805 | max_size -= (i + 1); | |
5806 | ||
5807 | /* Escape as much data as fits into rs->buf. */ | |
5808 | buf_len = remote_escape_output | |
5809 | (writebuf, len, (rs->buf + i), &max_size, max_size); | |
5810 | ||
5811 | if (putpkt_binary (rs->buf, i + buf_len) < 0 | |
5812 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
5813 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
5814 | return -1; | |
5815 | ||
5816 | unpack_varlen_hex (rs->buf, &n); | |
5817 | return n; | |
5818 | } | |
5819 | ||
0876f84a DJ |
5820 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
5821 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
5822 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
5823 | The number of bytes read may be less than LEN without indicating an | |
5824 | EOF. PACKET is checked and updated to indicate whether the remote | |
5825 | target supports this object. */ | |
5826 | ||
5827 | static LONGEST | |
5828 | remote_read_qxfer (struct target_ops *ops, const char *object_name, | |
5829 | const char *annex, | |
5830 | gdb_byte *readbuf, ULONGEST offset, LONGEST len, | |
5831 | struct packet_config *packet) | |
5832 | { | |
5833 | static char *finished_object; | |
5834 | static char *finished_annex; | |
5835 | static ULONGEST finished_offset; | |
5836 | ||
5837 | struct remote_state *rs = get_remote_state (); | |
5838 | unsigned int total = 0; | |
5839 | LONGEST i, n, packet_len; | |
5840 | ||
5841 | if (packet->support == PACKET_DISABLE) | |
5842 | return -1; | |
5843 | ||
5844 | /* Check whether we've cached an end-of-object packet that matches | |
5845 | this request. */ | |
5846 | if (finished_object) | |
5847 | { | |
5848 | if (strcmp (object_name, finished_object) == 0 | |
5849 | && strcmp (annex ? annex : "", finished_annex) == 0 | |
5850 | && offset == finished_offset) | |
5851 | return 0; | |
5852 | ||
5853 | /* Otherwise, we're now reading something different. Discard | |
5854 | the cache. */ | |
5855 | xfree (finished_object); | |
5856 | xfree (finished_annex); | |
5857 | finished_object = NULL; | |
5858 | finished_annex = NULL; | |
5859 | } | |
5860 | ||
5861 | /* Request only enough to fit in a single packet. The actual data | |
5862 | may not, since we don't know how much of it will need to be escaped; | |
5863 | the target is free to respond with slightly less data. We subtract | |
5864 | five to account for the response type and the protocol frame. */ | |
5865 | n = min (get_remote_packet_size () - 5, len); | |
5866 | snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s", | |
5867 | object_name, annex ? annex : "", | |
5868 | phex_nz (offset, sizeof offset), | |
5869 | phex_nz (n, sizeof n)); | |
5870 | i = putpkt (rs->buf); | |
5871 | if (i < 0) | |
5872 | return -1; | |
5873 | ||
5874 | rs->buf[0] = '\0'; | |
5875 | packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
5876 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) | |
5877 | return -1; | |
5878 | ||
5879 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
5880 | error (_("Unknown remote qXfer reply: %s"), rs->buf); | |
5881 | ||
5882 | /* 'm' means there is (or at least might be) more data after this | |
5883 | batch. That does not make sense unless there's at least one byte | |
5884 | of data in this reply. */ | |
5885 | if (rs->buf[0] == 'm' && packet_len == 1) | |
5886 | error (_("Remote qXfer reply contained no data.")); | |
5887 | ||
5888 | /* Got some data. */ | |
5889 | i = remote_unescape_input (rs->buf + 1, packet_len - 1, readbuf, n); | |
5890 | ||
5891 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
5892 | or possibly empty. If we have the final block of a non-empty |
5893 | object, record this fact to bypass a subsequent partial read. */ | |
5894 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a DJ |
5895 | { |
5896 | finished_object = xstrdup (object_name); | |
5897 | finished_annex = xstrdup (annex ? annex : ""); | |
5898 | finished_offset = offset + i; | |
5899 | } | |
5900 | ||
5901 | return i; | |
5902 | } | |
5903 | ||
1e3ff5ad | 5904 | static LONGEST |
4b8a223f | 5905 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
961cb7b5 MK |
5906 | const char *annex, gdb_byte *readbuf, |
5907 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
c906108c | 5908 | { |
d01949b6 | 5909 | struct remote_state *rs = get_remote_state (); |
c906108c | 5910 | int i; |
6d820c5c | 5911 | char *p2; |
1e3ff5ad | 5912 | char query_type; |
c906108c | 5913 | |
b2182ed2 | 5914 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
5915 | if (object == TARGET_OBJECT_MEMORY) |
5916 | { | |
5917 | int xfered; | |
5918 | errno = 0; | |
5919 | ||
2d717e4f DJ |
5920 | /* If the remote target is connected but not running, we should |
5921 | pass this request down to a lower stratum (e.g. the executable | |
5922 | file). */ | |
5923 | if (!target_has_execution) | |
5924 | return 0; | |
5925 | ||
21e3b9b9 | 5926 | if (writebuf != NULL) |
b2182ed2 | 5927 | xfered = remote_write_bytes (offset, writebuf, len); |
21e3b9b9 | 5928 | else |
b2182ed2 | 5929 | xfered = remote_read_bytes (offset, readbuf, len); |
21e3b9b9 DJ |
5930 | |
5931 | if (xfered > 0) | |
5932 | return xfered; | |
5933 | else if (xfered == 0 && errno == 0) | |
5934 | return 0; | |
5935 | else | |
5936 | return -1; | |
5937 | } | |
5938 | ||
0e7f50da UW |
5939 | /* Handle SPU memory using qxfer packets. */ |
5940 | if (object == TARGET_OBJECT_SPU) | |
5941 | { | |
5942 | if (readbuf) | |
5943 | return remote_read_qxfer (ops, "spu", annex, readbuf, offset, len, | |
5944 | &remote_protocol_packets | |
5945 | [PACKET_qXfer_spu_read]); | |
5946 | else | |
5947 | return remote_write_qxfer (ops, "spu", annex, writebuf, offset, len, | |
5948 | &remote_protocol_packets | |
5949 | [PACKET_qXfer_spu_write]); | |
5950 | } | |
5951 | ||
a76d924d DJ |
5952 | /* Only handle flash writes. */ |
5953 | if (writebuf != NULL) | |
5954 | { | |
5955 | LONGEST xfered; | |
5956 | ||
5957 | switch (object) | |
5958 | { | |
5959 | case TARGET_OBJECT_FLASH: | |
5960 | xfered = remote_flash_write (ops, offset, len, writebuf); | |
5961 | ||
5962 | if (xfered > 0) | |
5963 | return xfered; | |
5964 | else if (xfered == 0 && errno == 0) | |
5965 | return 0; | |
5966 | else | |
5967 | return -1; | |
5968 | ||
5969 | default: | |
5970 | return -1; | |
5971 | } | |
5972 | } | |
4b8a223f | 5973 | |
1e3ff5ad AC |
5974 | /* Map pre-existing objects onto letters. DO NOT do this for new |
5975 | objects!!! Instead specify new query packets. */ | |
5976 | switch (object) | |
c906108c | 5977 | { |
1e3ff5ad AC |
5978 | case TARGET_OBJECT_AVR: |
5979 | query_type = 'R'; | |
5980 | break; | |
802188a7 RM |
5981 | |
5982 | case TARGET_OBJECT_AUXV: | |
0876f84a DJ |
5983 | gdb_assert (annex == NULL); |
5984 | return remote_read_qxfer (ops, "auxv", annex, readbuf, offset, len, | |
5985 | &remote_protocol_packets[PACKET_qXfer_auxv]); | |
802188a7 | 5986 | |
23181151 DJ |
5987 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
5988 | return remote_read_qxfer | |
5989 | (ops, "features", annex, readbuf, offset, len, | |
5990 | &remote_protocol_packets[PACKET_qXfer_features]); | |
5991 | ||
cfa9d6d9 DJ |
5992 | case TARGET_OBJECT_LIBRARIES: |
5993 | return remote_read_qxfer | |
5994 | (ops, "libraries", annex, readbuf, offset, len, | |
5995 | &remote_protocol_packets[PACKET_qXfer_libraries]); | |
5996 | ||
fd79ecee DJ |
5997 | case TARGET_OBJECT_MEMORY_MAP: |
5998 | gdb_assert (annex == NULL); | |
5999 | return remote_read_qxfer (ops, "memory-map", annex, readbuf, offset, len, | |
6000 | &remote_protocol_packets[PACKET_qXfer_memory_map]); | |
6001 | ||
1e3ff5ad | 6002 | default: |
c906108c SS |
6003 | return -1; |
6004 | } | |
6005 | ||
4b8a223f | 6006 | /* Note: a zero OFFSET and LEN can be used to query the minimum |
1e3ff5ad | 6007 | buffer size. */ |
4b8a223f | 6008 | if (offset == 0 && len == 0) |
ea9c271d DJ |
6009 | return (get_remote_packet_size ()); |
6010 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not | |
24b06219 | 6011 | large enough let the caller deal with it. */ |
ea9c271d | 6012 | if (len < get_remote_packet_size ()) |
1e3ff5ad | 6013 | return -1; |
ea9c271d | 6014 | len = get_remote_packet_size (); |
1e3ff5ad | 6015 | |
23860348 | 6016 | /* Except for querying the minimum buffer size, target must be open. */ |
c5aa993b | 6017 | if (!remote_desc) |
8a3fe4f8 | 6018 | error (_("remote query is only available after target open")); |
c906108c | 6019 | |
1e3ff5ad | 6020 | gdb_assert (annex != NULL); |
4b8a223f | 6021 | gdb_assert (readbuf != NULL); |
c906108c | 6022 | |
6d820c5c | 6023 | p2 = rs->buf; |
c906108c SS |
6024 | *p2++ = 'q'; |
6025 | *p2++ = query_type; | |
6026 | ||
23860348 MS |
6027 | /* We used one buffer char for the remote protocol q command and |
6028 | another for the query type. As the remote protocol encapsulation | |
6029 | uses 4 chars plus one extra in case we are debugging | |
6030 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
6031 | string. */ | |
c906108c | 6032 | i = 0; |
ea9c271d | 6033 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 6034 | { |
1e3ff5ad AC |
6035 | /* Bad caller may have sent forbidden characters. */ |
6036 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
6037 | *p2++ = annex[i]; | |
c906108c SS |
6038 | i++; |
6039 | } | |
1e3ff5ad AC |
6040 | *p2 = '\0'; |
6041 | gdb_assert (annex[i] == '\0'); | |
c906108c | 6042 | |
6d820c5c | 6043 | i = putpkt (rs->buf); |
c5aa993b JM |
6044 | if (i < 0) |
6045 | return i; | |
c906108c | 6046 | |
6d820c5c DJ |
6047 | getpkt (&rs->buf, &rs->buf_size, 0); |
6048 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 6049 | |
cfd77fa1 | 6050 | return strlen ((char *) readbuf); |
c906108c SS |
6051 | } |
6052 | ||
08388c79 DE |
6053 | static int |
6054 | remote_search_memory (struct target_ops* ops, | |
6055 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
6056 | const gdb_byte *pattern, ULONGEST pattern_len, | |
6057 | CORE_ADDR *found_addrp) | |
6058 | { | |
6059 | struct remote_state *rs = get_remote_state (); | |
6060 | int max_size = get_memory_write_packet_size (); | |
6061 | struct packet_config *packet = | |
6062 | &remote_protocol_packets[PACKET_qSearch_memory]; | |
6063 | /* number of packet bytes used to encode the pattern, | |
6064 | this could be more than PATTERN_LEN due to escape characters */ | |
6065 | int escaped_pattern_len; | |
6066 | /* amount of pattern that was encodable in the packet */ | |
6067 | int used_pattern_len; | |
6068 | int i; | |
6069 | int found; | |
6070 | ULONGEST found_addr; | |
6071 | ||
6072 | /* Don't go to the target if we don't have to. | |
6073 | This is done before checking packet->support to avoid the possibility that | |
6074 | a success for this edge case means the facility works in general. */ | |
6075 | if (pattern_len > search_space_len) | |
6076 | return 0; | |
6077 | if (pattern_len == 0) | |
6078 | { | |
6079 | *found_addrp = start_addr; | |
6080 | return 1; | |
6081 | } | |
6082 | ||
6083 | /* If we already know the packet isn't supported, fall back to the simple | |
6084 | way of searching memory. */ | |
6085 | ||
6086 | if (packet->support == PACKET_DISABLE) | |
6087 | { | |
6088 | /* Target doesn't provided special support, fall back and use the | |
6089 | standard support (copy memory and do the search here). */ | |
6090 | return simple_search_memory (ops, start_addr, search_space_len, | |
6091 | pattern, pattern_len, found_addrp); | |
6092 | } | |
6093 | ||
6094 | /* Insert header. */ | |
6095 | i = snprintf (rs->buf, max_size, | |
6096 | "qSearch:memory:%s;%s;", | |
6097 | paddr_nz (start_addr), | |
6098 | phex_nz (search_space_len, sizeof (search_space_len))); | |
6099 | max_size -= (i + 1); | |
6100 | ||
6101 | /* Escape as much data as fits into rs->buf. */ | |
6102 | escaped_pattern_len = | |
6103 | remote_escape_output (pattern, pattern_len, (rs->buf + i), | |
6104 | &used_pattern_len, max_size); | |
6105 | ||
6106 | /* Bail if the pattern is too large. */ | |
6107 | if (used_pattern_len != pattern_len) | |
10e0fa18 | 6108 | error ("Pattern is too large to transmit to remote target."); |
08388c79 DE |
6109 | |
6110 | if (putpkt_binary (rs->buf, i + escaped_pattern_len) < 0 | |
6111 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
6112 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
6113 | { | |
6114 | /* The request may not have worked because the command is not | |
6115 | supported. If so, fall back to the simple way. */ | |
6116 | if (packet->support == PACKET_DISABLE) | |
6117 | { | |
6118 | return simple_search_memory (ops, start_addr, search_space_len, | |
6119 | pattern, pattern_len, found_addrp); | |
6120 | } | |
6121 | return -1; | |
6122 | } | |
6123 | ||
6124 | if (rs->buf[0] == '0') | |
6125 | found = 0; | |
6126 | else if (rs->buf[0] == '1') | |
6127 | { | |
6128 | found = 1; | |
6129 | if (rs->buf[1] != ',') | |
10e0fa18 | 6130 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
6131 | unpack_varlen_hex (rs->buf + 2, &found_addr); |
6132 | *found_addrp = found_addr; | |
6133 | } | |
6134 | else | |
10e0fa18 | 6135 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
6136 | |
6137 | return found; | |
6138 | } | |
6139 | ||
96baa820 JM |
6140 | static void |
6141 | remote_rcmd (char *command, | |
d9fcf2fb | 6142 | struct ui_file *outbuf) |
96baa820 | 6143 | { |
d01949b6 | 6144 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 6145 | char *p = rs->buf; |
96baa820 JM |
6146 | |
6147 | if (!remote_desc) | |
8a3fe4f8 | 6148 | error (_("remote rcmd is only available after target open")); |
96baa820 | 6149 | |
23860348 | 6150 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
6151 | if (command == NULL) |
6152 | command = ""; | |
6153 | ||
23860348 | 6154 | /* The query prefix. */ |
2e9f7625 DJ |
6155 | strcpy (rs->buf, "qRcmd,"); |
6156 | p = strchr (rs->buf, '\0'); | |
96baa820 | 6157 | |
2e9f7625 | 6158 | if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/) > get_remote_packet_size ()) |
8a3fe4f8 | 6159 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 6160 | |
23860348 | 6161 | /* Encode the actual command. */ |
cfd77fa1 | 6162 | bin2hex ((gdb_byte *) command, p, 0); |
96baa820 | 6163 | |
6d820c5c | 6164 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 6165 | error (_("Communication problem with target.")); |
96baa820 JM |
6166 | |
6167 | /* get/display the response */ | |
6168 | while (1) | |
6169 | { | |
2e9f7625 DJ |
6170 | char *buf; |
6171 | ||
23860348 | 6172 | /* XXX - see also tracepoint.c:remote_get_noisy_reply(). */ |
2e9f7625 | 6173 | rs->buf[0] = '\0'; |
6d820c5c | 6174 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 6175 | buf = rs->buf; |
96baa820 | 6176 | if (buf[0] == '\0') |
8a3fe4f8 | 6177 | error (_("Target does not support this command.")); |
96baa820 JM |
6178 | if (buf[0] == 'O' && buf[1] != 'K') |
6179 | { | |
23860348 | 6180 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
6181 | continue; |
6182 | } | |
6183 | if (strcmp (buf, "OK") == 0) | |
6184 | break; | |
7be570e7 JM |
6185 | if (strlen (buf) == 3 && buf[0] == 'E' |
6186 | && isdigit (buf[1]) && isdigit (buf[2])) | |
6187 | { | |
8a3fe4f8 | 6188 | error (_("Protocol error with Rcmd")); |
7be570e7 | 6189 | } |
96baa820 JM |
6190 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
6191 | { | |
6192 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
6193 | fputc_unfiltered (c, outbuf); | |
6194 | } | |
6195 | break; | |
6196 | } | |
6197 | } | |
6198 | ||
fd79ecee DJ |
6199 | static VEC(mem_region_s) * |
6200 | remote_memory_map (struct target_ops *ops) | |
6201 | { | |
6202 | VEC(mem_region_s) *result = NULL; | |
6203 | char *text = target_read_stralloc (¤t_target, | |
6204 | TARGET_OBJECT_MEMORY_MAP, NULL); | |
6205 | ||
6206 | if (text) | |
6207 | { | |
6208 | struct cleanup *back_to = make_cleanup (xfree, text); | |
6209 | result = parse_memory_map (text); | |
6210 | do_cleanups (back_to); | |
6211 | } | |
6212 | ||
6213 | return result; | |
6214 | } | |
6215 | ||
c906108c | 6216 | static void |
fba45db2 | 6217 | packet_command (char *args, int from_tty) |
c906108c | 6218 | { |
d01949b6 | 6219 | struct remote_state *rs = get_remote_state (); |
c906108c | 6220 | |
c5aa993b | 6221 | if (!remote_desc) |
8a3fe4f8 | 6222 | error (_("command can only be used with remote target")); |
c906108c | 6223 | |
c5aa993b | 6224 | if (!args) |
8a3fe4f8 | 6225 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
6226 | |
6227 | puts_filtered ("sending: "); | |
6228 | print_packet (args); | |
6229 | puts_filtered ("\n"); | |
6230 | putpkt (args); | |
6231 | ||
6d820c5c | 6232 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 6233 | puts_filtered ("received: "); |
6d820c5c | 6234 | print_packet (rs->buf); |
c906108c SS |
6235 | puts_filtered ("\n"); |
6236 | } | |
6237 | ||
6238 | #if 0 | |
23860348 | 6239 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 6240 | |
a14ed312 | 6241 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 6242 | |
a14ed312 | 6243 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 6244 | |
a14ed312 | 6245 | static void threadalive_test (char *cmd, int tty); |
c906108c | 6246 | |
a14ed312 | 6247 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 6248 | |
23860348 | 6249 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 6250 | |
a14ed312 | 6251 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 6252 | |
23860348 | 6253 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 6254 | |
a14ed312 | 6255 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 6256 | |
a14ed312 | 6257 | static void init_remote_threadtests (void); |
c906108c | 6258 | |
23860348 | 6259 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
6260 | |
6261 | static void | |
fba45db2 | 6262 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
6263 | { |
6264 | int sample_thread = SAMPLE_THREAD; | |
6265 | ||
a3f17187 | 6266 | printf_filtered (_("Remote threadset test\n")); |
79d7f229 | 6267 | set_general_thread (sample_thread); |
c906108c SS |
6268 | } |
6269 | ||
6270 | ||
6271 | static void | |
fba45db2 | 6272 | threadalive_test (char *cmd, int tty) |
c906108c SS |
6273 | { |
6274 | int sample_thread = SAMPLE_THREAD; | |
79d7f229 PA |
6275 | int pid = ptid_get_pid (inferior_ptid); |
6276 | ptid_t ptid = ptid_build (pid, 0, sample_thread); | |
c906108c | 6277 | |
79d7f229 | 6278 | if (remote_thread_alive (ptid)) |
c906108c SS |
6279 | printf_filtered ("PASS: Thread alive test\n"); |
6280 | else | |
6281 | printf_filtered ("FAIL: Thread alive test\n"); | |
6282 | } | |
6283 | ||
23860348 | 6284 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
6285 | |
6286 | void | |
fba45db2 | 6287 | output_threadid (char *title, threadref *ref) |
c906108c SS |
6288 | { |
6289 | char hexid[20]; | |
6290 | ||
23860348 | 6291 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
6292 | hexid[16] = 0; |
6293 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
6294 | } | |
6295 | ||
6296 | static void | |
fba45db2 | 6297 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
6298 | { |
6299 | int startflag = 1; | |
6300 | threadref nextthread; | |
6301 | int done, result_count; | |
6302 | threadref threadlist[3]; | |
6303 | ||
6304 | printf_filtered ("Remote Threadlist test\n"); | |
6305 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
6306 | &result_count, &threadlist[0])) | |
6307 | printf_filtered ("FAIL: threadlist test\n"); | |
6308 | else | |
6309 | { | |
6310 | threadref *scan = threadlist; | |
6311 | threadref *limit = scan + result_count; | |
6312 | ||
6313 | while (scan < limit) | |
6314 | output_threadid (" thread ", scan++); | |
6315 | } | |
6316 | } | |
6317 | ||
6318 | void | |
fba45db2 | 6319 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
6320 | { |
6321 | output_threadid ("Threadid: ", &info->threadid); | |
6322 | printf_filtered ("Name: %s\n ", info->shortname); | |
6323 | printf_filtered ("State: %s\n", info->display); | |
6324 | printf_filtered ("other: %s\n\n", info->more_display); | |
6325 | } | |
6326 | ||
6327 | int | |
fba45db2 | 6328 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
6329 | { |
6330 | int result; | |
6331 | int set; | |
6332 | struct gdb_ext_thread_info threadinfo; | |
6333 | ||
6334 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
6335 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
6336 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
6337 | display_thread_info (&threadinfo); | |
6338 | return result; | |
6339 | } | |
6340 | ||
6341 | static void | |
fba45db2 | 6342 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
6343 | { |
6344 | int athread = SAMPLE_THREAD; | |
6345 | threadref thread; | |
6346 | int set; | |
6347 | ||
6348 | int_to_threadref (&thread, athread); | |
6349 | printf_filtered ("Remote Threadinfo test\n"); | |
6350 | if (!get_and_display_threadinfo (&thread)) | |
6351 | printf_filtered ("FAIL cannot get thread info\n"); | |
6352 | } | |
6353 | ||
6354 | static int | |
fba45db2 | 6355 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
6356 | { |
6357 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
6358 | return get_and_display_threadinfo (ref); | |
6359 | } | |
6360 | ||
6361 | static void | |
fba45db2 | 6362 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
6363 | { |
6364 | printf_filtered ("Remote Threadlist update test\n"); | |
6365 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
6366 | } | |
6367 | ||
6368 | static void | |
6369 | init_remote_threadtests (void) | |
6370 | { | |
1bedd215 AC |
6371 | add_com ("tlist", class_obscure, threadlist_test_cmd, _("\ |
6372 | Fetch and print the remote list of thread identifiers, one pkt only")); | |
c906108c | 6373 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 6374 | _("Fetch and display info about one thread")); |
c906108c | 6375 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 6376 | _("Test setting to a different thread")); |
c906108c | 6377 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 6378 | _("Iterate through updating all remote thread info")); |
c906108c | 6379 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 6380 | _(" Remote thread alive test ")); |
c906108c SS |
6381 | } |
6382 | ||
6383 | #endif /* 0 */ | |
6384 | ||
f3fb8c85 MS |
6385 | /* Convert a thread ID to a string. Returns the string in a static |
6386 | buffer. */ | |
6387 | ||
6388 | static char * | |
39f77062 | 6389 | remote_pid_to_str (ptid_t ptid) |
f3fb8c85 | 6390 | { |
79d7f229 | 6391 | static char buf[64]; |
f3fb8c85 | 6392 | |
79d7f229 PA |
6393 | if (ptid_equal (magic_null_ptid, ptid)) |
6394 | { | |
6395 | xsnprintf (buf, sizeof buf, "Thread <main>"); | |
6396 | return buf; | |
6397 | } | |
6398 | else if (ptid_get_tid (ptid) != 0) | |
6399 | { | |
6400 | xsnprintf (buf, sizeof buf, "Thread %ld", | |
6401 | ptid_get_tid (ptid)); | |
6402 | return buf; | |
6403 | } | |
6404 | ||
6405 | return normal_pid_to_str (ptid); | |
f3fb8c85 MS |
6406 | } |
6407 | ||
38691318 KB |
6408 | /* Get the address of the thread local variable in OBJFILE which is |
6409 | stored at OFFSET within the thread local storage for thread PTID. */ | |
6410 | ||
6411 | static CORE_ADDR | |
6412 | remote_get_thread_local_address (ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
6413 | { | |
444abaca | 6414 | if (remote_protocol_packets[PACKET_qGetTLSAddr].support != PACKET_DISABLE) |
38691318 KB |
6415 | { |
6416 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 6417 | char *p = rs->buf; |
571dd617 | 6418 | enum packet_result result; |
38691318 KB |
6419 | |
6420 | strcpy (p, "qGetTLSAddr:"); | |
6421 | p += strlen (p); | |
79d7f229 | 6422 | p += hexnumstr (p, ptid_get_tid (ptid)); |
38691318 KB |
6423 | *p++ = ','; |
6424 | p += hexnumstr (p, offset); | |
6425 | *p++ = ','; | |
6426 | p += hexnumstr (p, lm); | |
6427 | *p++ = '\0'; | |
6428 | ||
6d820c5c DJ |
6429 | putpkt (rs->buf); |
6430 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6431 | result = packet_ok (rs->buf, &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 6432 | if (result == PACKET_OK) |
38691318 KB |
6433 | { |
6434 | ULONGEST result; | |
6435 | ||
6d820c5c | 6436 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
6437 | return result; |
6438 | } | |
571dd617 | 6439 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
6440 | throw_error (TLS_GENERIC_ERROR, |
6441 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 6442 | else |
109c3e39 AC |
6443 | throw_error (TLS_GENERIC_ERROR, |
6444 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
6445 | } |
6446 | else | |
109c3e39 AC |
6447 | throw_error (TLS_GENERIC_ERROR, |
6448 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
6449 | /* Not reached. */ |
6450 | return 0; | |
6451 | } | |
6452 | ||
29709017 DJ |
6453 | /* Support for inferring a target description based on the current |
6454 | architecture and the size of a 'g' packet. While the 'g' packet | |
6455 | can have any size (since optional registers can be left off the | |
6456 | end), some sizes are easily recognizable given knowledge of the | |
6457 | approximate architecture. */ | |
6458 | ||
6459 | struct remote_g_packet_guess | |
6460 | { | |
6461 | int bytes; | |
6462 | const struct target_desc *tdesc; | |
6463 | }; | |
6464 | typedef struct remote_g_packet_guess remote_g_packet_guess_s; | |
6465 | DEF_VEC_O(remote_g_packet_guess_s); | |
6466 | ||
6467 | struct remote_g_packet_data | |
6468 | { | |
6469 | VEC(remote_g_packet_guess_s) *guesses; | |
6470 | }; | |
6471 | ||
6472 | static struct gdbarch_data *remote_g_packet_data_handle; | |
6473 | ||
6474 | static void * | |
6475 | remote_g_packet_data_init (struct obstack *obstack) | |
6476 | { | |
6477 | return OBSTACK_ZALLOC (obstack, struct remote_g_packet_data); | |
6478 | } | |
6479 | ||
6480 | void | |
6481 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
6482 | const struct target_desc *tdesc) | |
6483 | { | |
6484 | struct remote_g_packet_data *data | |
6485 | = gdbarch_data (gdbarch, remote_g_packet_data_handle); | |
6486 | struct remote_g_packet_guess new_guess, *guess; | |
6487 | int ix; | |
6488 | ||
6489 | gdb_assert (tdesc != NULL); | |
6490 | ||
6491 | for (ix = 0; | |
6492 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
6493 | ix++) | |
6494 | if (guess->bytes == bytes) | |
6495 | internal_error (__FILE__, __LINE__, | |
6496 | "Duplicate g packet description added for size %d", | |
6497 | bytes); | |
6498 | ||
6499 | new_guess.bytes = bytes; | |
6500 | new_guess.tdesc = tdesc; | |
6501 | VEC_safe_push (remote_g_packet_guess_s, data->guesses, &new_guess); | |
6502 | } | |
6503 | ||
6504 | static const struct target_desc * | |
6505 | remote_read_description (struct target_ops *target) | |
6506 | { | |
6507 | struct remote_g_packet_data *data | |
1cf3db46 | 6508 | = gdbarch_data (target_gdbarch, remote_g_packet_data_handle); |
29709017 DJ |
6509 | |
6510 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) | |
6511 | { | |
6512 | struct remote_g_packet_guess *guess; | |
6513 | int ix; | |
6514 | int bytes = send_g_packet (); | |
6515 | ||
6516 | for (ix = 0; | |
6517 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
6518 | ix++) | |
6519 | if (guess->bytes == bytes) | |
6520 | return guess->tdesc; | |
6521 | ||
6522 | /* We discard the g packet. A minor optimization would be to | |
6523 | hold on to it, and fill the register cache once we have selected | |
6524 | an architecture, but it's too tricky to do safely. */ | |
6525 | } | |
6526 | ||
6527 | return NULL; | |
6528 | } | |
6529 | ||
a6b151f1 DJ |
6530 | /* Remote file transfer support. This is host-initiated I/O, not |
6531 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
6532 | ||
6533 | /* If *LEFT is at least the length of STRING, copy STRING to | |
6534 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
6535 | decrease *LEFT. Otherwise raise an error. */ | |
6536 | ||
6537 | static void | |
6538 | remote_buffer_add_string (char **buffer, int *left, char *string) | |
6539 | { | |
6540 | int len = strlen (string); | |
6541 | ||
6542 | if (len > *left) | |
6543 | error (_("Packet too long for target.")); | |
6544 | ||
6545 | memcpy (*buffer, string, len); | |
6546 | *buffer += len; | |
6547 | *left -= len; | |
6548 | ||
6549 | /* NUL-terminate the buffer as a convenience, if there is | |
6550 | room. */ | |
6551 | if (*left) | |
6552 | **buffer = '\0'; | |
6553 | } | |
6554 | ||
6555 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
6556 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
6557 | decrease *LEFT. Otherwise raise an error. */ | |
6558 | ||
6559 | static void | |
6560 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
6561 | int len) | |
6562 | { | |
6563 | if (2 * len > *left) | |
6564 | error (_("Packet too long for target.")); | |
6565 | ||
6566 | bin2hex (bytes, *buffer, len); | |
6567 | *buffer += 2 * len; | |
6568 | *left -= 2 * len; | |
6569 | ||
6570 | /* NUL-terminate the buffer as a convenience, if there is | |
6571 | room. */ | |
6572 | if (*left) | |
6573 | **buffer = '\0'; | |
6574 | } | |
6575 | ||
6576 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
6577 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
6578 | decrease *LEFT. Otherwise raise an error. */ | |
6579 | ||
6580 | static void | |
6581 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
6582 | { | |
6583 | int len = hexnumlen (value); | |
6584 | ||
6585 | if (len > *left) | |
6586 | error (_("Packet too long for target.")); | |
6587 | ||
6588 | hexnumstr (*buffer, value); | |
6589 | *buffer += len; | |
6590 | *left -= len; | |
6591 | ||
6592 | /* NUL-terminate the buffer as a convenience, if there is | |
6593 | room. */ | |
6594 | if (*left) | |
6595 | **buffer = '\0'; | |
6596 | } | |
6597 | ||
6598 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
6599 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
6600 | was included, and *ATTACHMENT to point to the start of the annex | |
6601 | if any. The length of the packet isn't needed here; there may | |
6602 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
6603 | ||
6604 | Return 0 if the packet could be parsed, -1 if it could not. If | |
6605 | -1 is returned, the other variables may not be initialized. */ | |
6606 | ||
6607 | static int | |
6608 | remote_hostio_parse_result (char *buffer, int *retcode, | |
6609 | int *remote_errno, char **attachment) | |
6610 | { | |
6611 | char *p, *p2; | |
6612 | ||
6613 | *remote_errno = 0; | |
6614 | *attachment = NULL; | |
6615 | ||
6616 | if (buffer[0] != 'F') | |
6617 | return -1; | |
6618 | ||
6619 | errno = 0; | |
6620 | *retcode = strtol (&buffer[1], &p, 16); | |
6621 | if (errno != 0 || p == &buffer[1]) | |
6622 | return -1; | |
6623 | ||
6624 | /* Check for ",errno". */ | |
6625 | if (*p == ',') | |
6626 | { | |
6627 | errno = 0; | |
6628 | *remote_errno = strtol (p + 1, &p2, 16); | |
6629 | if (errno != 0 || p + 1 == p2) | |
6630 | return -1; | |
6631 | p = p2; | |
6632 | } | |
6633 | ||
6634 | /* Check for ";attachment". If there is no attachment, the | |
6635 | packet should end here. */ | |
6636 | if (*p == ';') | |
6637 | { | |
6638 | *attachment = p + 1; | |
6639 | return 0; | |
6640 | } | |
6641 | else if (*p == '\0') | |
6642 | return 0; | |
6643 | else | |
6644 | return -1; | |
6645 | } | |
6646 | ||
6647 | /* Send a prepared I/O packet to the target and read its response. | |
6648 | The prepared packet is in the global RS->BUF before this function | |
6649 | is called, and the answer is there when we return. | |
6650 | ||
6651 | COMMAND_BYTES is the length of the request to send, which may include | |
6652 | binary data. WHICH_PACKET is the packet configuration to check | |
6653 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
6654 | is set to the error number and -1 is returned. Otherwise the value | |
6655 | returned by the function is returned. | |
6656 | ||
6657 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
6658 | attachment is expected; an error will be reported if there's a | |
6659 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
6660 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
6661 | attachment's length. */ | |
6662 | ||
6663 | static int | |
6664 | remote_hostio_send_command (int command_bytes, int which_packet, | |
6665 | int *remote_errno, char **attachment, | |
6666 | int *attachment_len) | |
6667 | { | |
6668 | struct remote_state *rs = get_remote_state (); | |
6669 | int ret, bytes_read; | |
6670 | char *attachment_tmp; | |
6671 | ||
f1838a98 UW |
6672 | if (!remote_desc |
6673 | || remote_protocol_packets[which_packet].support == PACKET_DISABLE) | |
a6b151f1 DJ |
6674 | { |
6675 | *remote_errno = FILEIO_ENOSYS; | |
6676 | return -1; | |
6677 | } | |
6678 | ||
6679 | putpkt_binary (rs->buf, command_bytes); | |
6680 | bytes_read = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
6681 | ||
6682 | /* If it timed out, something is wrong. Don't try to parse the | |
6683 | buffer. */ | |
6684 | if (bytes_read < 0) | |
6685 | { | |
6686 | *remote_errno = FILEIO_EINVAL; | |
6687 | return -1; | |
6688 | } | |
6689 | ||
6690 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
6691 | { | |
6692 | case PACKET_ERROR: | |
6693 | *remote_errno = FILEIO_EINVAL; | |
6694 | return -1; | |
6695 | case PACKET_UNKNOWN: | |
6696 | *remote_errno = FILEIO_ENOSYS; | |
6697 | return -1; | |
6698 | case PACKET_OK: | |
6699 | break; | |
6700 | } | |
6701 | ||
6702 | if (remote_hostio_parse_result (rs->buf, &ret, remote_errno, | |
6703 | &attachment_tmp)) | |
6704 | { | |
6705 | *remote_errno = FILEIO_EINVAL; | |
6706 | return -1; | |
6707 | } | |
6708 | ||
6709 | /* Make sure we saw an attachment if and only if we expected one. */ | |
6710 | if ((attachment_tmp == NULL && attachment != NULL) | |
6711 | || (attachment_tmp != NULL && attachment == NULL)) | |
6712 | { | |
6713 | *remote_errno = FILEIO_EINVAL; | |
6714 | return -1; | |
6715 | } | |
6716 | ||
6717 | /* If an attachment was found, it must point into the packet buffer; | |
6718 | work out how many bytes there were. */ | |
6719 | if (attachment_tmp != NULL) | |
6720 | { | |
6721 | *attachment = attachment_tmp; | |
6722 | *attachment_len = bytes_read - (*attachment - rs->buf); | |
6723 | } | |
6724 | ||
6725 | return ret; | |
6726 | } | |
6727 | ||
6728 | /* Open FILENAME on the remote target, using FLAGS and MODE. Return a | |
6729 | remote file descriptor, or -1 if an error occurs (and set | |
6730 | *REMOTE_ERRNO). */ | |
6731 | ||
6732 | static int | |
6733 | remote_hostio_open (const char *filename, int flags, int mode, | |
6734 | int *remote_errno) | |
6735 | { | |
6736 | struct remote_state *rs = get_remote_state (); | |
6737 | char *p = rs->buf; | |
6738 | int left = get_remote_packet_size () - 1; | |
6739 | ||
6740 | remote_buffer_add_string (&p, &left, "vFile:open:"); | |
6741 | ||
6742 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
6743 | strlen (filename)); | |
6744 | remote_buffer_add_string (&p, &left, ","); | |
6745 | ||
6746 | remote_buffer_add_int (&p, &left, flags); | |
6747 | remote_buffer_add_string (&p, &left, ","); | |
6748 | ||
6749 | remote_buffer_add_int (&p, &left, mode); | |
6750 | ||
6751 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_open, | |
6752 | remote_errno, NULL, NULL); | |
6753 | } | |
6754 | ||
6755 | /* Write up to LEN bytes from WRITE_BUF to FD on the remote target. | |
6756 | Return the number of bytes written, or -1 if an error occurs (and | |
6757 | set *REMOTE_ERRNO). */ | |
6758 | ||
6759 | static int | |
6760 | remote_hostio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
6761 | ULONGEST offset, int *remote_errno) | |
6762 | { | |
6763 | struct remote_state *rs = get_remote_state (); | |
6764 | char *p = rs->buf; | |
6765 | int left = get_remote_packet_size (); | |
6766 | int out_len; | |
6767 | ||
6768 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); | |
6769 | ||
6770 | remote_buffer_add_int (&p, &left, fd); | |
6771 | remote_buffer_add_string (&p, &left, ","); | |
6772 | ||
6773 | remote_buffer_add_int (&p, &left, offset); | |
6774 | remote_buffer_add_string (&p, &left, ","); | |
6775 | ||
6776 | p += remote_escape_output (write_buf, len, p, &out_len, | |
6777 | get_remote_packet_size () - (p - rs->buf)); | |
6778 | ||
6779 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_pwrite, | |
6780 | remote_errno, NULL, NULL); | |
6781 | } | |
6782 | ||
6783 | /* Read up to LEN bytes FD on the remote target into READ_BUF | |
6784 | Return the number of bytes read, or -1 if an error occurs (and | |
6785 | set *REMOTE_ERRNO). */ | |
6786 | ||
6787 | static int | |
6788 | remote_hostio_pread (int fd, gdb_byte *read_buf, int len, | |
6789 | ULONGEST offset, int *remote_errno) | |
6790 | { | |
6791 | struct remote_state *rs = get_remote_state (); | |
6792 | char *p = rs->buf; | |
6793 | char *attachment; | |
6794 | int left = get_remote_packet_size (); | |
6795 | int ret, attachment_len; | |
6796 | int read_len; | |
6797 | ||
6798 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
6799 | ||
6800 | remote_buffer_add_int (&p, &left, fd); | |
6801 | remote_buffer_add_string (&p, &left, ","); | |
6802 | ||
6803 | remote_buffer_add_int (&p, &left, len); | |
6804 | remote_buffer_add_string (&p, &left, ","); | |
6805 | ||
6806 | remote_buffer_add_int (&p, &left, offset); | |
6807 | ||
6808 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_pread, | |
6809 | remote_errno, &attachment, | |
6810 | &attachment_len); | |
6811 | ||
6812 | if (ret < 0) | |
6813 | return ret; | |
6814 | ||
6815 | read_len = remote_unescape_input (attachment, attachment_len, | |
6816 | read_buf, len); | |
6817 | if (read_len != ret) | |
6818 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
6819 | ||
6820 | return ret; | |
6821 | } | |
6822 | ||
6823 | /* Close FD on the remote target. Return 0, or -1 if an error occurs | |
6824 | (and set *REMOTE_ERRNO). */ | |
6825 | ||
6826 | static int | |
6827 | remote_hostio_close (int fd, int *remote_errno) | |
6828 | { | |
6829 | struct remote_state *rs = get_remote_state (); | |
6830 | char *p = rs->buf; | |
6831 | int left = get_remote_packet_size () - 1; | |
6832 | ||
6833 | remote_buffer_add_string (&p, &left, "vFile:close:"); | |
6834 | ||
6835 | remote_buffer_add_int (&p, &left, fd); | |
6836 | ||
6837 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_close, | |
6838 | remote_errno, NULL, NULL); | |
6839 | } | |
6840 | ||
6841 | /* Unlink FILENAME on the remote target. Return 0, or -1 if an error | |
6842 | occurs (and set *REMOTE_ERRNO). */ | |
6843 | ||
6844 | static int | |
6845 | remote_hostio_unlink (const char *filename, int *remote_errno) | |
6846 | { | |
6847 | struct remote_state *rs = get_remote_state (); | |
6848 | char *p = rs->buf; | |
6849 | int left = get_remote_packet_size () - 1; | |
6850 | ||
6851 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); | |
6852 | ||
6853 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
6854 | strlen (filename)); | |
6855 | ||
6856 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_unlink, | |
6857 | remote_errno, NULL, NULL); | |
6858 | } | |
6859 | ||
6860 | static int | |
6861 | remote_fileio_errno_to_host (int errnum) | |
6862 | { | |
6863 | switch (errnum) | |
6864 | { | |
6865 | case FILEIO_EPERM: | |
6866 | return EPERM; | |
6867 | case FILEIO_ENOENT: | |
6868 | return ENOENT; | |
6869 | case FILEIO_EINTR: | |
6870 | return EINTR; | |
6871 | case FILEIO_EIO: | |
6872 | return EIO; | |
6873 | case FILEIO_EBADF: | |
6874 | return EBADF; | |
6875 | case FILEIO_EACCES: | |
6876 | return EACCES; | |
6877 | case FILEIO_EFAULT: | |
6878 | return EFAULT; | |
6879 | case FILEIO_EBUSY: | |
6880 | return EBUSY; | |
6881 | case FILEIO_EEXIST: | |
6882 | return EEXIST; | |
6883 | case FILEIO_ENODEV: | |
6884 | return ENODEV; | |
6885 | case FILEIO_ENOTDIR: | |
6886 | return ENOTDIR; | |
6887 | case FILEIO_EISDIR: | |
6888 | return EISDIR; | |
6889 | case FILEIO_EINVAL: | |
6890 | return EINVAL; | |
6891 | case FILEIO_ENFILE: | |
6892 | return ENFILE; | |
6893 | case FILEIO_EMFILE: | |
6894 | return EMFILE; | |
6895 | case FILEIO_EFBIG: | |
6896 | return EFBIG; | |
6897 | case FILEIO_ENOSPC: | |
6898 | return ENOSPC; | |
6899 | case FILEIO_ESPIPE: | |
6900 | return ESPIPE; | |
6901 | case FILEIO_EROFS: | |
6902 | return EROFS; | |
6903 | case FILEIO_ENOSYS: | |
6904 | return ENOSYS; | |
6905 | case FILEIO_ENAMETOOLONG: | |
6906 | return ENAMETOOLONG; | |
6907 | } | |
6908 | return -1; | |
6909 | } | |
6910 | ||
6911 | static char * | |
6912 | remote_hostio_error (int errnum) | |
6913 | { | |
6914 | int host_error = remote_fileio_errno_to_host (errnum); | |
6915 | ||
6916 | if (host_error == -1) | |
6917 | error (_("Unknown remote I/O error %d"), errnum); | |
6918 | else | |
6919 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
6920 | } | |
6921 | ||
6922 | static void | |
6923 | fclose_cleanup (void *file) | |
6924 | { | |
6925 | fclose (file); | |
6926 | } | |
6927 | ||
6928 | static void | |
6929 | remote_hostio_close_cleanup (void *opaque) | |
6930 | { | |
6931 | int fd = *(int *) opaque; | |
6932 | int remote_errno; | |
6933 | ||
6934 | remote_hostio_close (fd, &remote_errno); | |
6935 | } | |
6936 | ||
f1838a98 UW |
6937 | |
6938 | static void * | |
6939 | remote_bfd_iovec_open (struct bfd *abfd, void *open_closure) | |
6940 | { | |
6941 | const char *filename = bfd_get_filename (abfd); | |
6942 | int fd, remote_errno; | |
6943 | int *stream; | |
6944 | ||
6945 | gdb_assert (remote_filename_p (filename)); | |
6946 | ||
6947 | fd = remote_hostio_open (filename + 7, FILEIO_O_RDONLY, 0, &remote_errno); | |
6948 | if (fd == -1) | |
6949 | { | |
6950 | errno = remote_fileio_errno_to_host (remote_errno); | |
6951 | bfd_set_error (bfd_error_system_call); | |
6952 | return NULL; | |
6953 | } | |
6954 | ||
6955 | stream = xmalloc (sizeof (int)); | |
6956 | *stream = fd; | |
6957 | return stream; | |
6958 | } | |
6959 | ||
6960 | static int | |
6961 | remote_bfd_iovec_close (struct bfd *abfd, void *stream) | |
6962 | { | |
6963 | int fd = *(int *)stream; | |
6964 | int remote_errno; | |
6965 | ||
6966 | xfree (stream); | |
6967 | ||
6968 | /* Ignore errors on close; these may happen if the remote | |
6969 | connection was already torn down. */ | |
6970 | remote_hostio_close (fd, &remote_errno); | |
6971 | ||
6972 | return 1; | |
6973 | } | |
6974 | ||
6975 | static file_ptr | |
6976 | remote_bfd_iovec_pread (struct bfd *abfd, void *stream, void *buf, | |
6977 | file_ptr nbytes, file_ptr offset) | |
6978 | { | |
6979 | int fd = *(int *)stream; | |
6980 | int remote_errno; | |
6981 | file_ptr pos, bytes; | |
6982 | ||
6983 | pos = 0; | |
6984 | while (nbytes > pos) | |
6985 | { | |
6986 | bytes = remote_hostio_pread (fd, (char *)buf + pos, nbytes - pos, | |
6987 | offset + pos, &remote_errno); | |
6988 | if (bytes == 0) | |
6989 | /* Success, but no bytes, means end-of-file. */ | |
6990 | break; | |
6991 | if (bytes == -1) | |
6992 | { | |
6993 | errno = remote_fileio_errno_to_host (remote_errno); | |
6994 | bfd_set_error (bfd_error_system_call); | |
6995 | return -1; | |
6996 | } | |
6997 | ||
6998 | pos += bytes; | |
6999 | } | |
7000 | ||
7001 | return pos; | |
7002 | } | |
7003 | ||
7004 | static int | |
7005 | remote_bfd_iovec_stat (struct bfd *abfd, void *stream, struct stat *sb) | |
7006 | { | |
7007 | /* FIXME: We should probably implement remote_hostio_stat. */ | |
7008 | sb->st_size = INT_MAX; | |
7009 | return 0; | |
7010 | } | |
7011 | ||
7012 | int | |
7013 | remote_filename_p (const char *filename) | |
7014 | { | |
7015 | return strncmp (filename, "remote:", 7) == 0; | |
7016 | } | |
7017 | ||
7018 | bfd * | |
7019 | remote_bfd_open (const char *remote_file, const char *target) | |
7020 | { | |
7021 | return bfd_openr_iovec (remote_file, target, | |
7022 | remote_bfd_iovec_open, NULL, | |
7023 | remote_bfd_iovec_pread, | |
7024 | remote_bfd_iovec_close, | |
7025 | remote_bfd_iovec_stat); | |
7026 | } | |
7027 | ||
a6b151f1 DJ |
7028 | void |
7029 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
7030 | { | |
7031 | struct cleanup *back_to, *close_cleanup; | |
7032 | int retcode, fd, remote_errno, bytes, io_size; | |
7033 | FILE *file; | |
7034 | gdb_byte *buffer; | |
7035 | int bytes_in_buffer; | |
7036 | int saw_eof; | |
7037 | ULONGEST offset; | |
7038 | ||
7039 | if (!remote_desc) | |
7040 | error (_("command can only be used with remote target")); | |
7041 | ||
7042 | file = fopen (local_file, "rb"); | |
7043 | if (file == NULL) | |
7044 | perror_with_name (local_file); | |
7045 | back_to = make_cleanup (fclose_cleanup, file); | |
7046 | ||
7047 | fd = remote_hostio_open (remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT | |
7048 | | FILEIO_O_TRUNC), | |
7049 | 0700, &remote_errno); | |
7050 | if (fd == -1) | |
7051 | remote_hostio_error (remote_errno); | |
7052 | ||
7053 | /* Send up to this many bytes at once. They won't all fit in the | |
7054 | remote packet limit, so we'll transfer slightly fewer. */ | |
7055 | io_size = get_remote_packet_size (); | |
7056 | buffer = xmalloc (io_size); | |
7057 | make_cleanup (xfree, buffer); | |
7058 | ||
7059 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
7060 | ||
7061 | bytes_in_buffer = 0; | |
7062 | saw_eof = 0; | |
7063 | offset = 0; | |
7064 | while (bytes_in_buffer || !saw_eof) | |
7065 | { | |
7066 | if (!saw_eof) | |
7067 | { | |
7068 | bytes = fread (buffer + bytes_in_buffer, 1, io_size - bytes_in_buffer, | |
7069 | file); | |
7070 | if (bytes == 0) | |
7071 | { | |
7072 | if (ferror (file)) | |
7073 | error (_("Error reading %s."), local_file); | |
7074 | else | |
7075 | { | |
7076 | /* EOF. Unless there is something still in the | |
7077 | buffer from the last iteration, we are done. */ | |
7078 | saw_eof = 1; | |
7079 | if (bytes_in_buffer == 0) | |
7080 | break; | |
7081 | } | |
7082 | } | |
7083 | } | |
7084 | else | |
7085 | bytes = 0; | |
7086 | ||
7087 | bytes += bytes_in_buffer; | |
7088 | bytes_in_buffer = 0; | |
7089 | ||
7090 | retcode = remote_hostio_pwrite (fd, buffer, bytes, offset, &remote_errno); | |
7091 | ||
7092 | if (retcode < 0) | |
7093 | remote_hostio_error (remote_errno); | |
7094 | else if (retcode == 0) | |
7095 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
7096 | else if (retcode < bytes) | |
7097 | { | |
7098 | /* Short write. Save the rest of the read data for the next | |
7099 | write. */ | |
7100 | bytes_in_buffer = bytes - retcode; | |
7101 | memmove (buffer, buffer + retcode, bytes_in_buffer); | |
7102 | } | |
7103 | ||
7104 | offset += retcode; | |
7105 | } | |
7106 | ||
7107 | discard_cleanups (close_cleanup); | |
7108 | if (remote_hostio_close (fd, &remote_errno)) | |
7109 | remote_hostio_error (remote_errno); | |
7110 | ||
7111 | if (from_tty) | |
7112 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
7113 | do_cleanups (back_to); | |
7114 | } | |
7115 | ||
7116 | void | |
7117 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
7118 | { | |
7119 | struct cleanup *back_to, *close_cleanup; | |
7120 | int retcode, fd, remote_errno, bytes, io_size; | |
7121 | FILE *file; | |
7122 | gdb_byte *buffer; | |
7123 | ULONGEST offset; | |
7124 | ||
7125 | if (!remote_desc) | |
7126 | error (_("command can only be used with remote target")); | |
7127 | ||
7128 | fd = remote_hostio_open (remote_file, FILEIO_O_RDONLY, 0, &remote_errno); | |
7129 | if (fd == -1) | |
7130 | remote_hostio_error (remote_errno); | |
7131 | ||
7132 | file = fopen (local_file, "wb"); | |
7133 | if (file == NULL) | |
7134 | perror_with_name (local_file); | |
7135 | back_to = make_cleanup (fclose_cleanup, file); | |
7136 | ||
7137 | /* Send up to this many bytes at once. They won't all fit in the | |
7138 | remote packet limit, so we'll transfer slightly fewer. */ | |
7139 | io_size = get_remote_packet_size (); | |
7140 | buffer = xmalloc (io_size); | |
7141 | make_cleanup (xfree, buffer); | |
7142 | ||
7143 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
7144 | ||
7145 | offset = 0; | |
7146 | while (1) | |
7147 | { | |
7148 | bytes = remote_hostio_pread (fd, buffer, io_size, offset, &remote_errno); | |
7149 | if (bytes == 0) | |
7150 | /* Success, but no bytes, means end-of-file. */ | |
7151 | break; | |
7152 | if (bytes == -1) | |
7153 | remote_hostio_error (remote_errno); | |
7154 | ||
7155 | offset += bytes; | |
7156 | ||
7157 | bytes = fwrite (buffer, 1, bytes, file); | |
7158 | if (bytes == 0) | |
7159 | perror_with_name (local_file); | |
7160 | } | |
7161 | ||
7162 | discard_cleanups (close_cleanup); | |
7163 | if (remote_hostio_close (fd, &remote_errno)) | |
7164 | remote_hostio_error (remote_errno); | |
7165 | ||
7166 | if (from_tty) | |
7167 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
7168 | do_cleanups (back_to); | |
7169 | } | |
7170 | ||
7171 | void | |
7172 | remote_file_delete (const char *remote_file, int from_tty) | |
7173 | { | |
7174 | int retcode, remote_errno; | |
7175 | ||
7176 | if (!remote_desc) | |
7177 | error (_("command can only be used with remote target")); | |
7178 | ||
7179 | retcode = remote_hostio_unlink (remote_file, &remote_errno); | |
7180 | if (retcode == -1) | |
7181 | remote_hostio_error (remote_errno); | |
7182 | ||
7183 | if (from_tty) | |
7184 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
7185 | } | |
7186 | ||
7187 | static void | |
7188 | remote_put_command (char *args, int from_tty) | |
7189 | { | |
7190 | struct cleanup *back_to; | |
7191 | char **argv; | |
7192 | ||
7193 | argv = buildargv (args); | |
7194 | if (argv == NULL) | |
7195 | nomem (0); | |
7196 | back_to = make_cleanup_freeargv (argv); | |
7197 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
7198 | error (_("Invalid parameters to remote put")); | |
7199 | ||
7200 | remote_file_put (argv[0], argv[1], from_tty); | |
7201 | ||
7202 | do_cleanups (back_to); | |
7203 | } | |
7204 | ||
7205 | static void | |
7206 | remote_get_command (char *args, int from_tty) | |
7207 | { | |
7208 | struct cleanup *back_to; | |
7209 | char **argv; | |
7210 | ||
7211 | argv = buildargv (args); | |
7212 | if (argv == NULL) | |
7213 | nomem (0); | |
7214 | back_to = make_cleanup_freeargv (argv); | |
7215 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
7216 | error (_("Invalid parameters to remote get")); | |
7217 | ||
7218 | remote_file_get (argv[0], argv[1], from_tty); | |
7219 | ||
7220 | do_cleanups (back_to); | |
7221 | } | |
7222 | ||
7223 | static void | |
7224 | remote_delete_command (char *args, int from_tty) | |
7225 | { | |
7226 | struct cleanup *back_to; | |
7227 | char **argv; | |
7228 | ||
7229 | argv = buildargv (args); | |
7230 | if (argv == NULL) | |
7231 | nomem (0); | |
7232 | back_to = make_cleanup_freeargv (argv); | |
7233 | if (argv[0] == NULL || argv[1] != NULL) | |
7234 | error (_("Invalid parameters to remote delete")); | |
7235 | ||
7236 | remote_file_delete (argv[0], from_tty); | |
7237 | ||
7238 | do_cleanups (back_to); | |
7239 | } | |
7240 | ||
7241 | static void | |
7242 | remote_command (char *args, int from_tty) | |
7243 | { | |
7244 | help_list (remote_cmdlist, "remote ", -1, gdb_stdout); | |
7245 | } | |
7246 | ||
c906108c | 7247 | static void |
fba45db2 | 7248 | init_remote_ops (void) |
c906108c | 7249 | { |
c5aa993b | 7250 | remote_ops.to_shortname = "remote"; |
c906108c | 7251 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 7252 | remote_ops.to_doc = |
c906108c | 7253 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
7254 | Specify the serial device it is connected to\n\ |
7255 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
7256 | remote_ops.to_open = remote_open; |
7257 | remote_ops.to_close = remote_close; | |
c906108c | 7258 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 7259 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 7260 | remote_ops.to_resume = remote_resume; |
c906108c SS |
7261 | remote_ops.to_wait = remote_wait; |
7262 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
7263 | remote_ops.to_store_registers = remote_store_registers; | |
7264 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 7265 | remote_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 7266 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
7267 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
7268 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
7269 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
7270 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
7271 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; | |
7272 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
7273 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
7274 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
7275 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b JM |
7276 | remote_ops.to_kill = remote_kill; |
7277 | remote_ops.to_load = generic_load; | |
c906108c SS |
7278 | remote_ops.to_mourn_inferior = remote_mourn; |
7279 | remote_ops.to_thread_alive = remote_thread_alive; | |
0f71a2f6 | 7280 | remote_ops.to_find_new_threads = remote_threads_info; |
0caabb7e | 7281 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 7282 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
c906108c | 7283 | remote_ops.to_stop = remote_stop; |
4b8a223f | 7284 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 7285 | remote_ops.to_rcmd = remote_rcmd; |
49d03eab | 7286 | remote_ops.to_log_command = serial_log_command; |
38691318 | 7287 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; |
c906108c | 7288 | remote_ops.to_stratum = process_stratum; |
c5aa993b JM |
7289 | remote_ops.to_has_all_memory = 1; |
7290 | remote_ops.to_has_memory = 1; | |
7291 | remote_ops.to_has_stack = 1; | |
7292 | remote_ops.to_has_registers = 1; | |
7293 | remote_ops.to_has_execution = 1; | |
7294 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
7295 | remote_ops.to_magic = OPS_MAGIC; | |
fd79ecee | 7296 | remote_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
7297 | remote_ops.to_flash_erase = remote_flash_erase; |
7298 | remote_ops.to_flash_done = remote_flash_done; | |
29709017 | 7299 | remote_ops.to_read_description = remote_read_description; |
08388c79 | 7300 | remote_ops.to_search_memory = remote_search_memory; |
75c99385 PA |
7301 | remote_ops.to_can_async_p = remote_can_async_p; |
7302 | remote_ops.to_is_async_p = remote_is_async_p; | |
7303 | remote_ops.to_async = remote_async; | |
7304 | remote_ops.to_async_mask = remote_async_mask; | |
7305 | remote_ops.to_terminal_inferior = remote_terminal_inferior; | |
7306 | remote_ops.to_terminal_ours = remote_terminal_ours; | |
c906108c SS |
7307 | } |
7308 | ||
7309 | /* Set up the extended remote vector by making a copy of the standard | |
7310 | remote vector and adding to it. */ | |
7311 | ||
7312 | static void | |
fba45db2 | 7313 | init_extended_remote_ops (void) |
c906108c SS |
7314 | { |
7315 | extended_remote_ops = remote_ops; | |
7316 | ||
0f71a2f6 | 7317 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 7318 | extended_remote_ops.to_longname = |
c906108c | 7319 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 7320 | extended_remote_ops.to_doc = |
c906108c | 7321 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
39237dd1 PA |
7322 | Specify the serial device it is connected to (e.g. /dev/ttya)."; |
7323 | extended_remote_ops.to_open = extended_remote_open; | |
c906108c SS |
7324 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
7325 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
2d717e4f DJ |
7326 | extended_remote_ops.to_detach = extended_remote_detach; |
7327 | extended_remote_ops.to_attach = extended_remote_attach; | |
0f71a2f6 JM |
7328 | } |
7329 | ||
6426a772 JM |
7330 | static int |
7331 | remote_can_async_p (void) | |
7332 | { | |
c6ebd6cf | 7333 | if (!target_async_permitted) |
75c99385 PA |
7334 | /* We only enable async when the user specifically asks for it. */ |
7335 | return 0; | |
7336 | ||
23860348 | 7337 | /* We're async whenever the serial device is. */ |
b84876c2 | 7338 | return remote_async_mask_value && serial_can_async_p (remote_desc); |
6426a772 JM |
7339 | } |
7340 | ||
7341 | static int | |
7342 | remote_is_async_p (void) | |
7343 | { | |
c6ebd6cf | 7344 | if (!target_async_permitted) |
75c99385 PA |
7345 | /* We only enable async when the user specifically asks for it. */ |
7346 | return 0; | |
7347 | ||
23860348 | 7348 | /* We're async whenever the serial device is. */ |
b84876c2 | 7349 | return remote_async_mask_value && serial_is_async_p (remote_desc); |
6426a772 JM |
7350 | } |
7351 | ||
2acceee2 JM |
7352 | /* Pass the SERIAL event on and up to the client. One day this code |
7353 | will be able to delay notifying the client of an event until the | |
23860348 | 7354 | point where an entire packet has been received. */ |
2acceee2 | 7355 | |
2bc416ba | 7356 | static void (*async_client_callback) (enum inferior_event_type event_type, |
23860348 | 7357 | void *context); |
2acceee2 JM |
7358 | static void *async_client_context; |
7359 | static serial_event_ftype remote_async_serial_handler; | |
7360 | ||
6426a772 | 7361 | static void |
819cc324 | 7362 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 7363 | { |
2acceee2 JM |
7364 | /* Don't propogate error information up to the client. Instead let |
7365 | the client find out about the error by querying the target. */ | |
7366 | async_client_callback (INF_REG_EVENT, async_client_context); | |
7367 | } | |
7368 | ||
7369 | static void | |
2bc416ba | 7370 | remote_async (void (*callback) (enum inferior_event_type event_type, |
23860348 | 7371 | void *context), void *context) |
2acceee2 | 7372 | { |
b84876c2 | 7373 | if (remote_async_mask_value == 0) |
8e65ff28 | 7374 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 7375 | _("Calling remote_async when async is masked")); |
ed9a39eb | 7376 | |
2acceee2 JM |
7377 | if (callback != NULL) |
7378 | { | |
2cd58942 | 7379 | serial_async (remote_desc, remote_async_serial_handler, NULL); |
2acceee2 JM |
7380 | async_client_callback = callback; |
7381 | async_client_context = context; | |
7382 | } | |
7383 | else | |
2cd58942 | 7384 | serial_async (remote_desc, NULL, NULL); |
6426a772 JM |
7385 | } |
7386 | ||
b84876c2 PA |
7387 | static int |
7388 | remote_async_mask (int new_mask) | |
7389 | { | |
7390 | int curr_mask = remote_async_mask_value; | |
7391 | remote_async_mask_value = new_mask; | |
7392 | return curr_mask; | |
7393 | } | |
7394 | ||
5a2468f5 | 7395 | static void |
c2d11a7d | 7396 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 7397 | { |
427c3a89 | 7398 | help_list (remote_set_cmdlist, "set remote ", -1, gdb_stdout); |
5a2468f5 JM |
7399 | } |
7400 | ||
d471ea57 AC |
7401 | static void |
7402 | show_remote_cmd (char *args, int from_tty) | |
7403 | { | |
37a105a1 | 7404 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 7405 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 DJ |
7406 | struct cleanup *showlist_chain; |
7407 | struct cmd_list_element *list = remote_show_cmdlist; | |
7408 | ||
7409 | showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist"); | |
7410 | for (; list != NULL; list = list->next) | |
7411 | if (strcmp (list->name, "Z-packet") == 0) | |
7412 | continue; | |
427c3a89 DJ |
7413 | else if (list->type == not_set_cmd) |
7414 | /* Alias commands are exactly like the original, except they | |
7415 | don't have the normal type. */ | |
7416 | continue; | |
7417 | else | |
37a105a1 DJ |
7418 | { |
7419 | struct cleanup *option_chain | |
7420 | = make_cleanup_ui_out_tuple_begin_end (uiout, "option"); | |
7421 | ui_out_field_string (uiout, "name", list->name); | |
7422 | ui_out_text (uiout, ": "); | |
427c3a89 DJ |
7423 | if (list->type == show_cmd) |
7424 | do_setshow_command ((char *) NULL, from_tty, list); | |
7425 | else | |
7426 | cmd_func (list, NULL, from_tty); | |
37a105a1 DJ |
7427 | /* Close the tuple. */ |
7428 | do_cleanups (option_chain); | |
7429 | } | |
427c3a89 DJ |
7430 | |
7431 | /* Close the tuple. */ | |
7432 | do_cleanups (showlist_chain); | |
d471ea57 | 7433 | } |
5a2468f5 | 7434 | |
0f71a2f6 | 7435 | |
23860348 | 7436 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
7437 | static void |
7438 | remote_new_objfile (struct objfile *objfile) | |
7439 | { | |
23860348 | 7440 | if (remote_desc != 0) /* Have a remote connection. */ |
06d3b283 | 7441 | remote_check_symbols (objfile); |
dc8acb97 MS |
7442 | } |
7443 | ||
c906108c | 7444 | void |
fba45db2 | 7445 | _initialize_remote (void) |
c906108c | 7446 | { |
ea9c271d DJ |
7447 | struct remote_state *rs; |
7448 | ||
0f71a2f6 | 7449 | /* architecture specific data */ |
2bc416ba | 7450 | remote_gdbarch_data_handle = |
23860348 | 7451 | gdbarch_data_register_post_init (init_remote_state); |
29709017 DJ |
7452 | remote_g_packet_data_handle = |
7453 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 7454 | |
ea9c271d DJ |
7455 | /* Initialize the per-target state. At the moment there is only one |
7456 | of these, not one per target. Only one target is active at a | |
7457 | time. The default buffer size is unimportant; it will be expanded | |
7458 | whenever a larger buffer is needed. */ | |
0b83947e | 7459 | rs = get_remote_state_raw (); |
ea9c271d DJ |
7460 | rs->buf_size = 400; |
7461 | rs->buf = xmalloc (rs->buf_size); | |
7462 | ||
c906108c SS |
7463 | init_remote_ops (); |
7464 | add_target (&remote_ops); | |
7465 | ||
7466 | init_extended_remote_ops (); | |
7467 | add_target (&extended_remote_ops); | |
cce74817 | 7468 | |
dc8acb97 | 7469 | /* Hook into new objfile notification. */ |
06d3b283 | 7470 | observer_attach_new_objfile (remote_new_objfile); |
dc8acb97 | 7471 | |
b803fb0f DJ |
7472 | /* Set up signal handlers. */ |
7473 | sigint_remote_token = | |
7474 | create_async_signal_handler (async_remote_interrupt, NULL); | |
7475 | sigint_remote_twice_token = | |
7476 | create_async_signal_handler (inferior_event_handler_wrapper, NULL); | |
7477 | ||
c906108c SS |
7478 | #if 0 |
7479 | init_remote_threadtests (); | |
7480 | #endif | |
7481 | ||
23860348 | 7482 | /* set/show remote ... */ |
d471ea57 | 7483 | |
1bedd215 | 7484 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
7485 | Remote protocol specific variables\n\ |
7486 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 7487 | the packets being used"), |
cff3e48b | 7488 | &remote_set_cmdlist, "set remote ", |
23860348 | 7489 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 7490 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
7491 | Remote protocol specific variables\n\ |
7492 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 7493 | the packets being used"), |
cff3e48b | 7494 | &remote_show_cmdlist, "show remote ", |
23860348 | 7495 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 7496 | |
1a966eab AC |
7497 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
7498 | Compare section data on target to the exec file.\n\ | |
7499 | Argument is a single section name (default: all loaded sections)."), | |
c906108c SS |
7500 | &cmdlist); |
7501 | ||
1a966eab AC |
7502 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
7503 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
7504 | maintenance packet TEXT\n\ |
7505 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
7506 | this command sends the string TEXT to the inferior, and displays the\n\ | |
7507 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 7508 | terminating `#' character and checksum."), |
c906108c SS |
7509 | &maintenancelist); |
7510 | ||
7915a72c AC |
7511 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
7512 | Set whether to send break if interrupted."), _("\ | |
7513 | Show whether to send break if interrupted."), _("\ | |
7514 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
2c5b56ce | 7515 | NULL, NULL, /* FIXME: i18n: Whether to send break if interrupted is %s. */ |
e707bbc2 | 7516 | &setlist, &showlist); |
c906108c | 7517 | |
23860348 | 7518 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 7519 | |
1a966eab AC |
7520 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
7521 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 7522 | &setlist); |
1a966eab AC |
7523 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
7524 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
7525 | &showlist); |
7526 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
7527 | set_memory_write_packet_size, _("\ |
7528 | Set the maximum number of bytes per memory-write packet.\n\ | |
7529 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
7530 | default packet size. The actual limit is further reduced\n\ | |
7531 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
7532 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
7533 | &remote_set_cmdlist); |
7534 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
7535 | set_memory_read_packet_size, _("\ |
7536 | Set the maximum number of bytes per memory-read packet.\n\ | |
7537 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
7538 | default packet size. The actual limit is further reduced\n\ | |
7539 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
7540 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
7541 | &remote_set_cmdlist); |
7542 | add_cmd ("memory-write-packet-size", no_class, | |
7543 | show_memory_write_packet_size, | |
1a966eab | 7544 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
7545 | &remote_show_cmdlist); |
7546 | add_cmd ("memory-read-packet-size", no_class, | |
7547 | show_memory_read_packet_size, | |
1a966eab | 7548 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 7549 | &remote_show_cmdlist); |
c906108c | 7550 | |
b3f42336 | 7551 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
7552 | &remote_hw_watchpoint_limit, _("\ |
7553 | Set the maximum number of target hardware watchpoints."), _("\ | |
7554 | Show the maximum number of target hardware watchpoints."), _("\ | |
7555 | Specify a negative limit for unlimited."), | |
2c5b56ce | 7556 | NULL, NULL, /* FIXME: i18n: The maximum number of target hardware watchpoints is %s. */ |
b3f42336 AC |
7557 | &remote_set_cmdlist, &remote_show_cmdlist); |
7558 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, | |
7915a72c AC |
7559 | &remote_hw_breakpoint_limit, _("\ |
7560 | Set the maximum number of target hardware breakpoints."), _("\ | |
7561 | Show the maximum number of target hardware breakpoints."), _("\ | |
7562 | Specify a negative limit for unlimited."), | |
2c5b56ce | 7563 | NULL, NULL, /* FIXME: i18n: The maximum number of target hardware breakpoints is %s. */ |
b3f42336 | 7564 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 7565 | |
4d28ad1e AC |
7566 | add_setshow_integer_cmd ("remoteaddresssize", class_obscure, |
7567 | &remote_address_size, _("\ | |
7568 | Set the maximum size of the address (in bits) in a memory packet."), _("\ | |
7569 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
7570 | NULL, | |
7571 | NULL, /* FIXME: i18n: */ | |
7572 | &setlist, &showlist); | |
c906108c | 7573 | |
444abaca | 7574 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 7575 | "X", "binary-download", 1); |
0f71a2f6 | 7576 | |
444abaca | 7577 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 7578 | "vCont", "verbose-resume", 0); |
506fb367 | 7579 | |
89be2091 DJ |
7580 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
7581 | "QPassSignals", "pass-signals", 0); | |
7582 | ||
444abaca | 7583 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 7584 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 7585 | |
444abaca | 7586 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 7587 | "P", "set-register", 1); |
d471ea57 | 7588 | |
444abaca | 7589 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 7590 | "p", "fetch-register", 1); |
b96ec7ac | 7591 | |
444abaca | 7592 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 7593 | "Z0", "software-breakpoint", 0); |
d471ea57 | 7594 | |
444abaca | 7595 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 7596 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 7597 | |
444abaca | 7598 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 7599 | "Z2", "write-watchpoint", 0); |
d471ea57 | 7600 | |
444abaca | 7601 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 7602 | "Z3", "read-watchpoint", 0); |
d471ea57 | 7603 | |
444abaca | 7604 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 7605 | "Z4", "access-watchpoint", 0); |
d471ea57 | 7606 | |
0876f84a DJ |
7607 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
7608 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 7609 | |
23181151 DJ |
7610 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
7611 | "qXfer:features:read", "target-features", 0); | |
7612 | ||
cfa9d6d9 DJ |
7613 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
7614 | "qXfer:libraries:read", "library-info", 0); | |
7615 | ||
fd79ecee DJ |
7616 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
7617 | "qXfer:memory-map:read", "memory-map", 0); | |
7618 | ||
0e7f50da UW |
7619 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_read], |
7620 | "qXfer:spu:read", "read-spu-object", 0); | |
7621 | ||
7622 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_write], | |
7623 | "qXfer:spu:write", "write-spu-object", 0); | |
7624 | ||
444abaca | 7625 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 7626 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
7627 | 0); |
7628 | ||
be2a5f71 DJ |
7629 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
7630 | "qSupported", "supported-packets", 0); | |
7631 | ||
08388c79 DE |
7632 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory], |
7633 | "qSearch:memory", "search-memory", 0); | |
7634 | ||
a6b151f1 DJ |
7635 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
7636 | "vFile:open", "hostio-open", 0); | |
7637 | ||
7638 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
7639 | "vFile:pread", "hostio-pread", 0); | |
7640 | ||
7641 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
7642 | "vFile:pwrite", "hostio-pwrite", 0); | |
7643 | ||
7644 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
7645 | "vFile:close", "hostio-close", 0); | |
7646 | ||
7647 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
7648 | "vFile:unlink", "hostio-unlink", 0); | |
7649 | ||
2d717e4f DJ |
7650 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
7651 | "vAttach", "attach", 0); | |
7652 | ||
7653 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
7654 | "vRun", "run", 0); | |
7655 | ||
a6f3e723 SL |
7656 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode], |
7657 | "QStartNoAckMode", "noack", 0); | |
7658 | ||
37a105a1 DJ |
7659 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
7660 | Z sub-packet has its own set and show commands, but users may | |
7661 | have sets to this variable in their .gdbinit files (or in their | |
7662 | documentation). */ | |
e9e68a56 | 7663 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
7664 | &remote_Z_packet_detect, _("\ |
7665 | Set use of remote protocol `Z' packets"), _("\ | |
7666 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 7667 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 7668 | packets."), |
e9e68a56 | 7669 | set_remote_protocol_Z_packet_cmd, |
2c5b56ce | 7670 | show_remote_protocol_Z_packet_cmd, /* FIXME: i18n: Use of remote protocol `Z' packets is %s. */ |
e9e68a56 | 7671 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 7672 | |
a6b151f1 DJ |
7673 | add_prefix_cmd ("remote", class_files, remote_command, _("\ |
7674 | Manipulate files on the remote system\n\ | |
7675 | Transfer files to and from the remote target system."), | |
7676 | &remote_cmdlist, "remote ", | |
7677 | 0 /* allow-unknown */, &cmdlist); | |
7678 | ||
7679 | add_cmd ("put", class_files, remote_put_command, | |
7680 | _("Copy a local file to the remote system."), | |
7681 | &remote_cmdlist); | |
7682 | ||
7683 | add_cmd ("get", class_files, remote_get_command, | |
7684 | _("Copy a remote file to the local system."), | |
7685 | &remote_cmdlist); | |
7686 | ||
7687 | add_cmd ("delete", class_files, remote_delete_command, | |
7688 | _("Delete a remote file."), | |
7689 | &remote_cmdlist); | |
7690 | ||
2d717e4f DJ |
7691 | remote_exec_file = xstrdup (""); |
7692 | add_setshow_string_noescape_cmd ("exec-file", class_files, | |
7693 | &remote_exec_file, _("\ | |
7694 | Set the remote pathname for \"run\""), _("\ | |
7695 | Show the remote pathname for \"run\""), NULL, NULL, NULL, | |
7696 | &remote_set_cmdlist, &remote_show_cmdlist); | |
7697 | ||
449092f6 CV |
7698 | /* Eventually initialize fileio. See fileio.c */ |
7699 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
79d7f229 PA |
7700 | |
7701 | /* Take advantage of the fact that the LWP field is not used, to tag | |
7702 | special ptids with it set to != 0. */ | |
7703 | magic_null_ptid = ptid_build (0, 1, -1); | |
7704 | not_sent_ptid = ptid_build (0, 1, -2); | |
7705 | any_thread_ptid = ptid_build (0, 1, 0); | |
c906108c | 7706 | } |