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