]>
Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c | 2 | |
6aba47ca | 3 | Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, |
9b254dd1 | 4 | 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 |
29182b13 | 5 | Free Software Foundation, Inc. |
c906108c | 6 | |
c5aa993b JM |
7 | This file is part of GDB. |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b JM |
12 | (at your option) any later version. |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c5aa993b | 21 | |
23860348 | 22 | /* See the GDB User Guide for details of the GDB remote protocol. */ |
c5aa993b | 23 | |
c906108c SS |
24 | #include "defs.h" |
25 | #include "gdb_string.h" | |
26 | #include <ctype.h> | |
27 | #include <fcntl.h> | |
c906108c SS |
28 | #include "inferior.h" |
29 | #include "bfd.h" | |
30 | #include "symfile.h" | |
60250e8b | 31 | #include "exceptions.h" |
c906108c | 32 | #include "target.h" |
c5aa993b | 33 | /*#include "terminal.h" */ |
c906108c SS |
34 | #include "gdbcmd.h" |
35 | #include "objfiles.h" | |
36 | #include "gdb-stabs.h" | |
37 | #include "gdbthread.h" | |
c2c6d25f | 38 | #include "remote.h" |
4e052eda | 39 | #include "regcache.h" |
fd0407d6 | 40 | #include "value.h" |
1ff9c3d6 | 41 | #include "gdb_assert.h" |
6867ae3e | 42 | #include "observer.h" |
a77053c2 | 43 | #include "solib.h" |
37a105a1 DJ |
44 | #include "cli/cli-decode.h" |
45 | #include "cli/cli-setshow.h" | |
424163ea | 46 | #include "target-descriptions.h" |
c906108c | 47 | |
7a292a7a | 48 | #include <ctype.h> |
9846de1b | 49 | #include <sys/time.h> |
c906108c | 50 | |
43ff13b4 | 51 | #include "event-loop.h" |
c2c6d25f | 52 | #include "event-top.h" |
2acceee2 | 53 | #include "inf-loop.h" |
43ff13b4 | 54 | |
c906108c SS |
55 | #include <signal.h> |
56 | #include "serial.h" | |
57 | ||
6240bebf MS |
58 | #include "gdbcore.h" /* for exec_bfd */ |
59 | ||
449092f6 | 60 | #include "remote-fileio.h" |
a6b151f1 | 61 | #include "gdb/fileio.h" |
449092f6 | 62 | |
fd79ecee DJ |
63 | #include "memory-map.h" |
64 | ||
6765f3e5 DJ |
65 | /* The size to align memory write packets, when practical. The protocol |
66 | does not guarantee any alignment, and gdb will generate short | |
67 | writes and unaligned writes, but even as a best-effort attempt this | |
68 | can improve bulk transfers. For instance, if a write is misaligned | |
69 | relative to the target's data bus, the stub may need to make an extra | |
70 | round trip fetching data from the target. This doesn't make a | |
71 | huge difference, but it's easy to do, so we try to be helpful. | |
72 | ||
73 | The alignment chosen is arbitrary; usually data bus width is | |
74 | important here, not the possibly larger cache line size. */ | |
75 | enum { REMOTE_ALIGN_WRITES = 16 }; | |
76 | ||
23860348 | 77 | /* Prototypes for local functions. */ |
6426a772 JM |
78 | static void cleanup_sigint_signal_handler (void *dummy); |
79 | static void initialize_sigint_signal_handler (void); | |
6d820c5c | 80 | static int getpkt_sane (char **buf, long *sizeof_buf, int forever); |
6426a772 | 81 | |
a14ed312 KB |
82 | static void handle_remote_sigint (int); |
83 | static void handle_remote_sigint_twice (int); | |
84 | static void async_remote_interrupt (gdb_client_data); | |
85 | void async_remote_interrupt_twice (gdb_client_data); | |
43ff13b4 | 86 | |
a14ed312 | 87 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 88 | |
316f2060 | 89 | static void remote_prepare_to_store (struct regcache *regcache); |
c906108c | 90 | |
56be3814 | 91 | static void remote_fetch_registers (struct regcache *regcache, int regno); |
c906108c | 92 | |
39f77062 KB |
93 | static void remote_resume (ptid_t ptid, int step, |
94 | enum target_signal siggnal); | |
95 | static void remote_async_resume (ptid_t ptid, int step, | |
a14ed312 | 96 | enum target_signal siggnal); |
a14ed312 KB |
97 | static void remote_open (char *name, int from_tty); |
98 | static void remote_async_open (char *name, int from_tty); | |
c906108c | 99 | |
a14ed312 KB |
100 | static void extended_remote_open (char *name, int from_tty); |
101 | static void extended_remote_async_open (char *name, int from_tty); | |
c906108c | 102 | |
92d1e331 DJ |
103 | static void remote_open_1 (char *, int, struct target_ops *, int extended_p, |
104 | int async_p); | |
c906108c | 105 | |
a14ed312 | 106 | static void remote_close (int quitting); |
c906108c | 107 | |
56be3814 | 108 | static void remote_store_registers (struct regcache *regcache, int regno); |
c906108c | 109 | |
a14ed312 KB |
110 | static void remote_mourn (void); |
111 | static void remote_async_mourn (void); | |
c906108c | 112 | |
a14ed312 | 113 | static void extended_remote_restart (void); |
c906108c | 114 | |
a14ed312 | 115 | static void extended_remote_mourn (void); |
c906108c | 116 | |
a14ed312 | 117 | static void remote_mourn_1 (struct target_ops *); |
c906108c | 118 | |
6d820c5c | 119 | static void remote_send (char **buf, long *sizeof_buf_p); |
c906108c | 120 | |
a14ed312 | 121 | static int readchar (int timeout); |
c906108c | 122 | |
39f77062 KB |
123 | static ptid_t remote_wait (ptid_t ptid, |
124 | struct target_waitstatus *status); | |
125 | static ptid_t remote_async_wait (ptid_t ptid, | |
126 | struct target_waitstatus *status); | |
c906108c | 127 | |
a14ed312 KB |
128 | static void remote_kill (void); |
129 | static void remote_async_kill (void); | |
c906108c | 130 | |
a14ed312 | 131 | static int tohex (int nib); |
c906108c | 132 | |
a14ed312 | 133 | static void remote_detach (char *args, int from_tty); |
c906108c | 134 | |
a14ed312 | 135 | static void remote_interrupt (int signo); |
c906108c | 136 | |
a14ed312 | 137 | static void remote_interrupt_twice (int signo); |
7a292a7a | 138 | |
a14ed312 | 139 | static void interrupt_query (void); |
c906108c | 140 | |
a14ed312 | 141 | static void set_thread (int, int); |
c906108c | 142 | |
39f77062 | 143 | static int remote_thread_alive (ptid_t); |
c906108c | 144 | |
a14ed312 | 145 | static void get_offsets (void); |
c906108c | 146 | |
6d820c5c DJ |
147 | static void skip_frame (void); |
148 | ||
149 | static long read_frame (char **buf_p, long *sizeof_buf); | |
c906108c | 150 | |
a14ed312 | 151 | static int hexnumlen (ULONGEST num); |
c906108c | 152 | |
a14ed312 | 153 | static void init_remote_ops (void); |
c906108c | 154 | |
a14ed312 | 155 | static void init_extended_remote_ops (void); |
c906108c | 156 | |
a14ed312 | 157 | static void remote_stop (void); |
c906108c | 158 | |
a14ed312 | 159 | static int ishex (int ch, int *val); |
c906108c | 160 | |
a14ed312 | 161 | static int stubhex (int ch); |
c906108c | 162 | |
a14ed312 | 163 | static int hexnumstr (char *, ULONGEST); |
c906108c | 164 | |
a14ed312 | 165 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 166 | |
a14ed312 | 167 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 168 | |
a14ed312 | 169 | static void print_packet (char *); |
c906108c | 170 | |
a14ed312 | 171 | static unsigned long crc32 (unsigned char *, int, unsigned int); |
c906108c | 172 | |
a14ed312 | 173 | static void compare_sections_command (char *, int); |
c906108c | 174 | |
a14ed312 | 175 | static void packet_command (char *, int); |
c906108c | 176 | |
a14ed312 | 177 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 178 | |
39f77062 | 179 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 180 | |
a14ed312 | 181 | static void remote_find_new_threads (void); |
c906108c | 182 | |
a14ed312 | 183 | static void record_currthread (int currthread); |
c906108c | 184 | |
30559e10 | 185 | static int fromhex (int a); |
c906108c | 186 | |
cfd77fa1 | 187 | static int hex2bin (const char *hex, gdb_byte *bin, int count); |
c906108c | 188 | |
cfd77fa1 | 189 | static int bin2hex (const gdb_byte *bin, char *hex, int count); |
234fa6d1 | 190 | |
a14ed312 | 191 | static int putpkt_binary (char *buf, int cnt); |
c906108c | 192 | |
a14ed312 | 193 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 194 | |
5a2468f5 | 195 | struct packet_config; |
5a2468f5 | 196 | |
a14ed312 | 197 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 198 | |
d471ea57 | 199 | static void update_packet_config (struct packet_config *config); |
5a2468f5 | 200 | |
bb572ddd DJ |
201 | static void set_remote_protocol_packet_cmd (char *args, int from_tty, |
202 | struct cmd_list_element *c); | |
203 | ||
204 | static void show_remote_protocol_packet_cmd (struct ui_file *file, | |
205 | int from_tty, | |
206 | struct cmd_list_element *c, | |
207 | const char *value); | |
208 | ||
a14ed312 | 209 | void _initialize_remote (void); |
c906108c | 210 | |
a6b151f1 DJ |
211 | /* For "remote". */ |
212 | ||
213 | static struct cmd_list_element *remote_cmdlist; | |
214 | ||
bb572ddd DJ |
215 | /* For "set remote" and "show remote". */ |
216 | ||
217 | static struct cmd_list_element *remote_set_cmdlist; | |
218 | static struct cmd_list_element *remote_show_cmdlist; | |
219 | ||
ea9c271d DJ |
220 | /* Description of the remote protocol state for the currently |
221 | connected target. This is per-target state, and independent of the | |
222 | selected architecture. */ | |
223 | ||
224 | struct remote_state | |
225 | { | |
226 | /* A buffer to use for incoming packets, and its current size. The | |
227 | buffer is grown dynamically for larger incoming packets. | |
228 | Outgoing packets may also be constructed in this buffer. | |
229 | BUF_SIZE is always at least REMOTE_PACKET_SIZE; | |
230 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing | |
231 | packets. */ | |
232 | char *buf; | |
233 | long buf_size; | |
be2a5f71 DJ |
234 | |
235 | /* If we negotiated packet size explicitly (and thus can bypass | |
236 | heuristics for the largest packet size that will not overflow | |
237 | a buffer in the stub), this will be set to that packet size. | |
238 | Otherwise zero, meaning to use the guessed size. */ | |
239 | long explicit_packet_size; | |
2d717e4f DJ |
240 | |
241 | /* remote_wait is normally called when the target is running and | |
242 | waits for a stop reply packet. But sometimes we need to call it | |
243 | when the target is already stopped. We can send a "?" packet | |
244 | and have remote_wait read the response. Or, if we already have | |
245 | the response, we can stash it in BUF and tell remote_wait to | |
246 | skip calling getpkt. This flag is set when BUF contains a | |
247 | stop reply packet and the target is not waiting. */ | |
248 | int cached_wait_status; | |
ea9c271d DJ |
249 | }; |
250 | ||
251 | /* This data could be associated with a target, but we do not always | |
252 | have access to the current target when we need it, so for now it is | |
253 | static. This will be fine for as long as only one target is in use | |
254 | at a time. */ | |
255 | static struct remote_state remote_state; | |
256 | ||
257 | static struct remote_state * | |
0b83947e | 258 | get_remote_state_raw (void) |
ea9c271d DJ |
259 | { |
260 | return &remote_state; | |
261 | } | |
262 | ||
263 | /* Description of the remote protocol for a given architecture. */ | |
d01949b6 | 264 | |
ad10f812 AC |
265 | struct packet_reg |
266 | { | |
267 | long offset; /* Offset into G packet. */ | |
268 | long regnum; /* GDB's internal register number. */ | |
269 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 270 | int in_g_packet; /* Always part of G packet. */ |
2bc416ba | 271 | /* long size in bytes; == register_size (current_gdbarch, regnum); |
23860348 | 272 | at present. */ |
c9f4d572 UW |
273 | /* char *name; == gdbarch_register_name (current_gdbarch, regnum); |
274 | at present. */ | |
ad10f812 AC |
275 | }; |
276 | ||
ea9c271d | 277 | struct remote_arch_state |
d01949b6 | 278 | { |
ad10f812 AC |
279 | /* Description of the remote protocol registers. */ |
280 | long sizeof_g_packet; | |
b323314b AC |
281 | |
282 | /* Description of the remote protocol registers indexed by REGNUM | |
f57d151a | 283 | (making an array gdbarch_num_regs in size). */ |
b323314b | 284 | struct packet_reg *regs; |
ad10f812 | 285 | |
d01949b6 AC |
286 | /* This is the size (in chars) of the first response to the ``g'' |
287 | packet. It is used as a heuristic when determining the maximum | |
288 | size of memory-read and memory-write packets. A target will | |
289 | typically only reserve a buffer large enough to hold the ``g'' | |
290 | packet. The size does not include packet overhead (headers and | |
23860348 | 291 | trailers). */ |
d01949b6 AC |
292 | long actual_register_packet_size; |
293 | ||
294 | /* This is the maximum size (in chars) of a non read/write packet. | |
23860348 | 295 | It is also used as a cap on the size of read/write packets. */ |
d01949b6 AC |
296 | long remote_packet_size; |
297 | }; | |
298 | ||
3c3bea1c | 299 | |
d01949b6 AC |
300 | /* Handle for retreving the remote protocol data from gdbarch. */ |
301 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
302 | ||
ea9c271d DJ |
303 | static struct remote_arch_state * |
304 | get_remote_arch_state (void) | |
d01949b6 | 305 | { |
451fbdda | 306 | return gdbarch_data (current_gdbarch, remote_gdbarch_data_handle); |
d01949b6 AC |
307 | } |
308 | ||
0b83947e DJ |
309 | /* Fetch the global remote target state. */ |
310 | ||
311 | static struct remote_state * | |
312 | get_remote_state (void) | |
313 | { | |
314 | /* Make sure that the remote architecture state has been | |
315 | initialized, because doing so might reallocate rs->buf. Any | |
316 | function which calls getpkt also needs to be mindful of changes | |
317 | to rs->buf, but this call limits the number of places which run | |
318 | into trouble. */ | |
319 | get_remote_arch_state (); | |
320 | ||
321 | return get_remote_state_raw (); | |
322 | } | |
323 | ||
74ca34ce DJ |
324 | static int |
325 | compare_pnums (const void *lhs_, const void *rhs_) | |
326 | { | |
327 | const struct packet_reg * const *lhs = lhs_; | |
328 | const struct packet_reg * const *rhs = rhs_; | |
329 | ||
330 | if ((*lhs)->pnum < (*rhs)->pnum) | |
331 | return -1; | |
332 | else if ((*lhs)->pnum == (*rhs)->pnum) | |
333 | return 0; | |
334 | else | |
335 | return 1; | |
336 | } | |
337 | ||
d01949b6 AC |
338 | static void * |
339 | init_remote_state (struct gdbarch *gdbarch) | |
340 | { | |
74ca34ce | 341 | int regnum, num_remote_regs, offset; |
0b83947e | 342 | struct remote_state *rs = get_remote_state_raw (); |
ea9c271d | 343 | struct remote_arch_state *rsa; |
74ca34ce | 344 | struct packet_reg **remote_regs; |
ea9c271d DJ |
345 | |
346 | rsa = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_arch_state); | |
d01949b6 | 347 | |
123dc839 DJ |
348 | /* Use the architecture to build a regnum<->pnum table, which will be |
349 | 1:1 unless a feature set specifies otherwise. */ | |
f57d151a | 350 | rsa->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, |
4a22f64d | 351 | gdbarch_num_regs (gdbarch), |
f57d151a | 352 | struct packet_reg); |
4a22f64d | 353 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) |
ad10f812 | 354 | { |
ea9c271d | 355 | struct packet_reg *r = &rsa->regs[regnum]; |
baef701f | 356 | |
4a22f64d | 357 | if (register_size (gdbarch, regnum) == 0) |
baef701f DJ |
358 | /* Do not try to fetch zero-sized (placeholder) registers. */ |
359 | r->pnum = -1; | |
360 | else | |
361 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
362 | ||
b323314b | 363 | r->regnum = regnum; |
74ca34ce DJ |
364 | } |
365 | ||
366 | /* Define the g/G packet format as the contents of each register | |
367 | with a remote protocol number, in order of ascending protocol | |
368 | number. */ | |
369 | ||
4a22f64d UW |
370 | remote_regs = alloca (gdbarch_num_regs (gdbarch) |
371 | * sizeof (struct packet_reg *)); | |
f57d151a | 372 | for (num_remote_regs = 0, regnum = 0; |
4a22f64d | 373 | regnum < gdbarch_num_regs (gdbarch); |
f57d151a | 374 | regnum++) |
74ca34ce DJ |
375 | if (rsa->regs[regnum].pnum != -1) |
376 | remote_regs[num_remote_regs++] = &rsa->regs[regnum]; | |
7d58c67d | 377 | |
74ca34ce DJ |
378 | qsort (remote_regs, num_remote_regs, sizeof (struct packet_reg *), |
379 | compare_pnums); | |
380 | ||
381 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
382 | { | |
383 | remote_regs[regnum]->in_g_packet = 1; | |
384 | remote_regs[regnum]->offset = offset; | |
4a22f64d | 385 | offset += register_size (gdbarch, remote_regs[regnum]->regnum); |
ad10f812 AC |
386 | } |
387 | ||
74ca34ce DJ |
388 | /* Record the maximum possible size of the g packet - it may turn out |
389 | to be smaller. */ | |
390 | rsa->sizeof_g_packet = offset; | |
391 | ||
d01949b6 AC |
392 | /* Default maximum number of characters in a packet body. Many |
393 | remote stubs have a hardwired buffer size of 400 bytes | |
394 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
395 | as the maximum packet-size to ensure that the packet and an extra | |
396 | NUL character can always fit in the buffer. This stops GDB | |
397 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d DJ |
398 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
399 | rsa->remote_packet_size = 400 - 1; | |
d01949b6 | 400 | |
ea9c271d DJ |
401 | /* This one is filled in when a ``g'' packet is received. */ |
402 | rsa->actual_register_packet_size = 0; | |
403 | ||
404 | /* Should rsa->sizeof_g_packet needs more space than the | |
ad10f812 AC |
405 | default, adjust the size accordingly. Remember that each byte is |
406 | encoded as two characters. 32 is the overhead for the packet | |
407 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 408 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 409 | little. */ |
ea9c271d DJ |
410 | if (rsa->sizeof_g_packet > ((rsa->remote_packet_size - 32) / 2)) |
411 | rsa->remote_packet_size = (rsa->sizeof_g_packet * 2 + 32); | |
802188a7 | 412 | |
ea9c271d DJ |
413 | /* Make sure that the packet buffer is plenty big enough for |
414 | this architecture. */ | |
415 | if (rs->buf_size < rsa->remote_packet_size) | |
416 | { | |
417 | rs->buf_size = 2 * rsa->remote_packet_size; | |
7fca722e | 418 | rs->buf = xrealloc (rs->buf, rs->buf_size); |
ea9c271d | 419 | } |
6d820c5c | 420 | |
ea9c271d DJ |
421 | return rsa; |
422 | } | |
423 | ||
424 | /* Return the current allowed size of a remote packet. This is | |
425 | inferred from the current architecture, and should be used to | |
426 | limit the length of outgoing packets. */ | |
427 | static long | |
428 | get_remote_packet_size (void) | |
429 | { | |
be2a5f71 | 430 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
431 | struct remote_arch_state *rsa = get_remote_arch_state (); |
432 | ||
be2a5f71 DJ |
433 | if (rs->explicit_packet_size) |
434 | return rs->explicit_packet_size; | |
435 | ||
ea9c271d | 436 | return rsa->remote_packet_size; |
d01949b6 AC |
437 | } |
438 | ||
ad10f812 | 439 | static struct packet_reg * |
ea9c271d | 440 | packet_reg_from_regnum (struct remote_arch_state *rsa, long regnum) |
ad10f812 | 441 | { |
f57d151a | 442 | if (regnum < 0 && regnum >= gdbarch_num_regs (current_gdbarch)) |
b323314b AC |
443 | return NULL; |
444 | else | |
ad10f812 | 445 | { |
ea9c271d | 446 | struct packet_reg *r = &rsa->regs[regnum]; |
b323314b AC |
447 | gdb_assert (r->regnum == regnum); |
448 | return r; | |
ad10f812 | 449 | } |
ad10f812 AC |
450 | } |
451 | ||
452 | static struct packet_reg * | |
ea9c271d | 453 | packet_reg_from_pnum (struct remote_arch_state *rsa, LONGEST pnum) |
ad10f812 | 454 | { |
b323314b | 455 | int i; |
f57d151a | 456 | for (i = 0; i < gdbarch_num_regs (current_gdbarch); i++) |
ad10f812 | 457 | { |
ea9c271d | 458 | struct packet_reg *r = &rsa->regs[i]; |
b323314b AC |
459 | if (r->pnum == pnum) |
460 | return r; | |
ad10f812 AC |
461 | } |
462 | return NULL; | |
d01949b6 AC |
463 | } |
464 | ||
3c3bea1c GS |
465 | /* FIXME: graces/2002-08-08: These variables should eventually be |
466 | bound to an instance of the target object (as in gdbarch-tdep()), | |
467 | when such a thing exists. */ | |
468 | ||
469 | /* This is set to the data address of the access causing the target | |
470 | to stop for a watchpoint. */ | |
471 | static CORE_ADDR remote_watch_data_address; | |
472 | ||
94e08568 | 473 | /* This is non-zero if target stopped for a watchpoint. */ |
3c3bea1c GS |
474 | static int remote_stopped_by_watchpoint_p; |
475 | ||
c906108c SS |
476 | static struct target_ops remote_ops; |
477 | ||
478 | static struct target_ops extended_remote_ops; | |
479 | ||
43ff13b4 | 480 | /* Temporary target ops. Just like the remote_ops and |
23860348 | 481 | extended_remote_ops, but with asynchronous support. */ |
43ff13b4 JM |
482 | static struct target_ops remote_async_ops; |
483 | ||
b84876c2 PA |
484 | static int remote_async_mask_value = 1; |
485 | ||
43ff13b4 JM |
486 | static struct target_ops extended_async_remote_ops; |
487 | ||
6426a772 JM |
488 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
489 | ``forever'' still use the normal timeout mechanism. This is | |
490 | currently used by the ASYNC code to guarentee that target reads | |
491 | during the initial connect always time-out. Once getpkt has been | |
492 | modified to return a timeout indication and, in turn | |
493 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 494 | this can go away. */ |
6426a772 JM |
495 | static int wait_forever_enabled_p = 1; |
496 | ||
497 | ||
c906108c SS |
498 | /* This variable chooses whether to send a ^C or a break when the user |
499 | requests program interruption. Although ^C is usually what remote | |
500 | systems expect, and that is the default here, sometimes a break is | |
501 | preferable instead. */ | |
502 | ||
503 | static int remote_break; | |
504 | ||
c906108c SS |
505 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
506 | remote_open knows that we don't have a file open when the program | |
507 | starts. */ | |
819cc324 | 508 | static struct serial *remote_desc = NULL; |
c906108c | 509 | |
c906108c SS |
510 | /* This variable sets the number of bits in an address that are to be |
511 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
512 | leading zeros, the entire address would be sent. This variable | |
513 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The | |
514 | initial implementation of remote.c restricted the address sent in | |
515 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
516 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
517 | address was never sent. Since fixing this bug may cause a break in | |
518 | some remote targets this variable is principly provided to | |
23860348 | 519 | facilitate backward compatibility. */ |
c906108c SS |
520 | |
521 | static int remote_address_size; | |
522 | ||
6426a772 JM |
523 | /* Tempoary to track who currently owns the terminal. See |
524 | target_async_terminal_* for more details. */ | |
525 | ||
526 | static int remote_async_terminal_ours_p; | |
527 | ||
2d717e4f DJ |
528 | /* The executable file to use for "run" on the remote side. */ |
529 | ||
530 | static char *remote_exec_file = ""; | |
531 | ||
11cf8741 | 532 | \f |
11cf8741 | 533 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
534 | memory read/write packet. MIN (rsa->remote_packet_size, |
535 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 536 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
537 | (speed up transfers). The variables ``preferred_*'' (the user |
538 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 539 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
540 | |
541 | struct memory_packet_config | |
542 | { | |
543 | char *name; | |
544 | long size; | |
545 | int fixed_p; | |
546 | }; | |
547 | ||
548 | /* Compute the current size of a read/write packet. Since this makes | |
549 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
550 | ||
551 | static long | |
552 | get_memory_packet_size (struct memory_packet_config *config) | |
553 | { | |
d01949b6 | 554 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
555 | struct remote_arch_state *rsa = get_remote_arch_state (); |
556 | ||
11cf8741 JM |
557 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk |
558 | law?) that some hosts don't cope very well with large alloca() | |
559 | calls. Eventually the alloca() code will be replaced by calls to | |
560 | xmalloc() and make_cleanups() allowing this restriction to either | |
23860348 | 561 | be lifted or removed. */ |
11cf8741 JM |
562 | #ifndef MAX_REMOTE_PACKET_SIZE |
563 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
564 | #endif | |
3de11b2e | 565 | /* NOTE: 20 ensures we can write at least one byte. */ |
11cf8741 | 566 | #ifndef MIN_REMOTE_PACKET_SIZE |
3de11b2e | 567 | #define MIN_REMOTE_PACKET_SIZE 20 |
11cf8741 JM |
568 | #endif |
569 | long what_they_get; | |
570 | if (config->fixed_p) | |
571 | { | |
572 | if (config->size <= 0) | |
573 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
574 | else | |
575 | what_they_get = config->size; | |
576 | } | |
577 | else | |
578 | { | |
ea9c271d | 579 | what_they_get = get_remote_packet_size (); |
23860348 | 580 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
581 | if (config->size > 0 |
582 | && what_they_get > config->size) | |
583 | what_they_get = config->size; | |
be2a5f71 DJ |
584 | |
585 | /* Limit it to the size of the targets ``g'' response unless we have | |
586 | permission from the stub to use a larger packet size. */ | |
587 | if (rs->explicit_packet_size == 0 | |
588 | && rsa->actual_register_packet_size > 0 | |
589 | && what_they_get > rsa->actual_register_packet_size) | |
590 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 JM |
591 | } |
592 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
593 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
594 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
595 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
6d820c5c DJ |
596 | |
597 | /* Make sure there is room in the global buffer for this packet | |
598 | (including its trailing NUL byte). */ | |
599 | if (rs->buf_size < what_they_get + 1) | |
600 | { | |
601 | rs->buf_size = 2 * what_they_get; | |
602 | rs->buf = xrealloc (rs->buf, 2 * what_they_get); | |
603 | } | |
604 | ||
11cf8741 JM |
605 | return what_they_get; |
606 | } | |
607 | ||
608 | /* Update the size of a read/write packet. If they user wants | |
23860348 | 609 | something really big then do a sanity check. */ |
11cf8741 JM |
610 | |
611 | static void | |
612 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
613 | { | |
614 | int fixed_p = config->fixed_p; | |
615 | long size = config->size; | |
616 | if (args == NULL) | |
8a3fe4f8 | 617 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
618 | else if (strcmp (args, "hard") == 0 |
619 | || strcmp (args, "fixed") == 0) | |
620 | fixed_p = 1; | |
621 | else if (strcmp (args, "soft") == 0 | |
622 | || strcmp (args, "limit") == 0) | |
623 | fixed_p = 0; | |
624 | else | |
625 | { | |
626 | char *end; | |
627 | size = strtoul (args, &end, 0); | |
628 | if (args == end) | |
8a3fe4f8 | 629 | error (_("Invalid %s (bad syntax)."), config->name); |
11cf8741 JM |
630 | #if 0 |
631 | /* Instead of explicitly capping the size of a packet to | |
632 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
633 | instead allowed to set the size to something arbitrarily | |
23860348 | 634 | large. */ |
11cf8741 | 635 | if (size > MAX_REMOTE_PACKET_SIZE) |
8a3fe4f8 | 636 | error (_("Invalid %s (too large)."), config->name); |
11cf8741 JM |
637 | #endif |
638 | } | |
23860348 | 639 | /* Extra checks? */ |
11cf8741 JM |
640 | if (fixed_p && !config->fixed_p) |
641 | { | |
e2e0b3e5 AC |
642 | if (! query (_("The target may not be able to correctly handle a %s\n" |
643 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 644 | config->name, size)) |
8a3fe4f8 | 645 | error (_("Packet size not changed.")); |
11cf8741 | 646 | } |
23860348 | 647 | /* Update the config. */ |
11cf8741 JM |
648 | config->fixed_p = fixed_p; |
649 | config->size = size; | |
650 | } | |
651 | ||
652 | static void | |
653 | show_memory_packet_size (struct memory_packet_config *config) | |
654 | { | |
a3f17187 | 655 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 656 | if (config->fixed_p) |
a3f17187 | 657 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
658 | get_memory_packet_size (config)); |
659 | else | |
a3f17187 | 660 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
661 | get_memory_packet_size (config)); |
662 | } | |
663 | ||
664 | static struct memory_packet_config memory_write_packet_config = | |
665 | { | |
666 | "memory-write-packet-size", | |
667 | }; | |
668 | ||
669 | static void | |
670 | set_memory_write_packet_size (char *args, int from_tty) | |
671 | { | |
672 | set_memory_packet_size (args, &memory_write_packet_config); | |
673 | } | |
674 | ||
675 | static void | |
676 | show_memory_write_packet_size (char *args, int from_tty) | |
677 | { | |
678 | show_memory_packet_size (&memory_write_packet_config); | |
679 | } | |
680 | ||
681 | static long | |
682 | get_memory_write_packet_size (void) | |
683 | { | |
684 | return get_memory_packet_size (&memory_write_packet_config); | |
685 | } | |
686 | ||
687 | static struct memory_packet_config memory_read_packet_config = | |
688 | { | |
689 | "memory-read-packet-size", | |
690 | }; | |
691 | ||
692 | static void | |
693 | set_memory_read_packet_size (char *args, int from_tty) | |
694 | { | |
695 | set_memory_packet_size (args, &memory_read_packet_config); | |
696 | } | |
697 | ||
698 | static void | |
699 | show_memory_read_packet_size (char *args, int from_tty) | |
700 | { | |
701 | show_memory_packet_size (&memory_read_packet_config); | |
702 | } | |
703 | ||
704 | static long | |
705 | get_memory_read_packet_size (void) | |
706 | { | |
707 | long size = get_memory_packet_size (&memory_read_packet_config); | |
708 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an | |
709 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
710 | increased beyond this. */ |
711 | if (size > get_remote_packet_size ()) | |
712 | size = get_remote_packet_size (); | |
11cf8741 JM |
713 | return size; |
714 | } | |
715 | ||
11cf8741 | 716 | \f |
5a2468f5 JM |
717 | /* Generic configuration support for packets the stub optionally |
718 | supports. Allows the user to specify the use of the packet as well | |
23860348 | 719 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
720 | |
721 | enum packet_support | |
722 | { | |
723 | PACKET_SUPPORT_UNKNOWN = 0, | |
724 | PACKET_ENABLE, | |
725 | PACKET_DISABLE | |
726 | }; | |
727 | ||
5a2468f5 JM |
728 | struct packet_config |
729 | { | |
bb572ddd DJ |
730 | const char *name; |
731 | const char *title; | |
7f19b9a2 | 732 | enum auto_boolean detect; |
5a2468f5 JM |
733 | enum packet_support support; |
734 | }; | |
735 | ||
d471ea57 | 736 | /* Analyze a packet's return value and update the packet config |
23860348 | 737 | accordingly. */ |
d471ea57 AC |
738 | |
739 | enum packet_result | |
740 | { | |
741 | PACKET_ERROR, | |
742 | PACKET_OK, | |
743 | PACKET_UNKNOWN | |
744 | }; | |
745 | ||
5a2468f5 | 746 | static void |
d471ea57 | 747 | update_packet_config (struct packet_config *config) |
5a2468f5 | 748 | { |
d471ea57 AC |
749 | switch (config->detect) |
750 | { | |
7f19b9a2 | 751 | case AUTO_BOOLEAN_TRUE: |
d471ea57 AC |
752 | config->support = PACKET_ENABLE; |
753 | break; | |
7f19b9a2 | 754 | case AUTO_BOOLEAN_FALSE: |
d471ea57 AC |
755 | config->support = PACKET_DISABLE; |
756 | break; | |
7f19b9a2 | 757 | case AUTO_BOOLEAN_AUTO: |
d471ea57 AC |
758 | config->support = PACKET_SUPPORT_UNKNOWN; |
759 | break; | |
760 | } | |
5a2468f5 JM |
761 | } |
762 | ||
763 | static void | |
fba45db2 | 764 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
765 | { |
766 | char *support = "internal-error"; | |
767 | switch (config->support) | |
768 | { | |
769 | case PACKET_ENABLE: | |
770 | support = "enabled"; | |
771 | break; | |
772 | case PACKET_DISABLE: | |
773 | support = "disabled"; | |
774 | break; | |
775 | case PACKET_SUPPORT_UNKNOWN: | |
776 | support = "unknown"; | |
777 | break; | |
778 | } | |
779 | switch (config->detect) | |
780 | { | |
7f19b9a2 | 781 | case AUTO_BOOLEAN_AUTO: |
37a105a1 DJ |
782 | printf_filtered (_("Support for the `%s' packet is auto-detected, currently %s.\n"), |
783 | config->name, support); | |
5a2468f5 | 784 | break; |
7f19b9a2 AC |
785 | case AUTO_BOOLEAN_TRUE: |
786 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
787 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
788 | config->name, support); | |
8e248173 | 789 | break; |
5a2468f5 JM |
790 | } |
791 | } | |
792 | ||
793 | static void | |
bb572ddd DJ |
794 | add_packet_config_cmd (struct packet_config *config, const char *name, |
795 | const char *title, int legacy) | |
d471ea57 | 796 | { |
5a2468f5 JM |
797 | char *set_doc; |
798 | char *show_doc; | |
d471ea57 | 799 | char *cmd_name; |
3ed07be4 | 800 | |
5a2468f5 JM |
801 | config->name = name; |
802 | config->title = title; | |
7f19b9a2 | 803 | config->detect = AUTO_BOOLEAN_AUTO; |
8e248173 | 804 | config->support = PACKET_SUPPORT_UNKNOWN; |
b435e160 AC |
805 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
806 | name, title); | |
807 | show_doc = xstrprintf ("Show current use of remote protocol `%s' (%s) packet", | |
808 | name, title); | |
d471ea57 | 809 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 810 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 811 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
2c5b56ce | 812 | &config->detect, set_doc, show_doc, NULL, /* help_doc */ |
bb572ddd DJ |
813 | set_remote_protocol_packet_cmd, |
814 | show_remote_protocol_packet_cmd, | |
815 | &remote_set_cmdlist, &remote_show_cmdlist); | |
23860348 | 816 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
817 | if (legacy) |
818 | { | |
819 | char *legacy_name; | |
b435e160 | 820 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 821 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 822 | &remote_set_cmdlist); |
d471ea57 | 823 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 824 | &remote_show_cmdlist); |
d471ea57 | 825 | } |
5a2468f5 JM |
826 | } |
827 | ||
d471ea57 | 828 | static enum packet_result |
a76d924d | 829 | packet_check_result (const char *buf) |
5a2468f5 | 830 | { |
d471ea57 | 831 | if (buf[0] != '\0') |
5a2468f5 | 832 | { |
d471ea57 | 833 | /* The stub recognized the packet request. Check that the |
23860348 | 834 | operation succeeded. */ |
a76d924d DJ |
835 | if (buf[0] == 'E' |
836 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
837 | && buf[3] == '\0') | |
838 | /* "Enn" - definitly an error. */ | |
839 | return PACKET_ERROR; | |
840 | ||
841 | /* Always treat "E." as an error. This will be used for | |
842 | more verbose error messages, such as E.memtypes. */ | |
843 | if (buf[0] == 'E' && buf[1] == '.') | |
844 | return PACKET_ERROR; | |
845 | ||
846 | /* The packet may or may not be OK. Just assume it is. */ | |
847 | return PACKET_OK; | |
848 | } | |
849 | else | |
850 | /* The stub does not support the packet. */ | |
851 | return PACKET_UNKNOWN; | |
852 | } | |
853 | ||
854 | static enum packet_result | |
855 | packet_ok (const char *buf, struct packet_config *config) | |
856 | { | |
857 | enum packet_result result; | |
858 | ||
859 | result = packet_check_result (buf); | |
860 | switch (result) | |
861 | { | |
862 | case PACKET_OK: | |
863 | case PACKET_ERROR: | |
864 | /* The stub recognized the packet request. */ | |
d471ea57 AC |
865 | switch (config->support) |
866 | { | |
867 | case PACKET_SUPPORT_UNKNOWN: | |
868 | if (remote_debug) | |
869 | fprintf_unfiltered (gdb_stdlog, | |
870 | "Packet %s (%s) is supported\n", | |
871 | config->name, config->title); | |
872 | config->support = PACKET_ENABLE; | |
873 | break; | |
874 | case PACKET_DISABLE: | |
8e65ff28 | 875 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 876 | _("packet_ok: attempt to use a disabled packet")); |
d471ea57 AC |
877 | break; |
878 | case PACKET_ENABLE: | |
879 | break; | |
880 | } | |
a76d924d DJ |
881 | break; |
882 | case PACKET_UNKNOWN: | |
23860348 | 883 | /* The stub does not support the packet. */ |
d471ea57 AC |
884 | switch (config->support) |
885 | { | |
886 | case PACKET_ENABLE: | |
7f19b9a2 | 887 | if (config->detect == AUTO_BOOLEAN_AUTO) |
d471ea57 | 888 | /* If the stub previously indicated that the packet was |
23860348 | 889 | supported then there is a protocol error.. */ |
8a3fe4f8 | 890 | error (_("Protocol error: %s (%s) conflicting enabled responses."), |
d471ea57 AC |
891 | config->name, config->title); |
892 | else | |
23860348 | 893 | /* The user set it wrong. */ |
8a3fe4f8 | 894 | error (_("Enabled packet %s (%s) not recognized by stub"), |
d471ea57 AC |
895 | config->name, config->title); |
896 | break; | |
897 | case PACKET_SUPPORT_UNKNOWN: | |
898 | if (remote_debug) | |
899 | fprintf_unfiltered (gdb_stdlog, | |
900 | "Packet %s (%s) is NOT supported\n", | |
901 | config->name, config->title); | |
902 | config->support = PACKET_DISABLE; | |
903 | break; | |
904 | case PACKET_DISABLE: | |
905 | break; | |
906 | } | |
a76d924d | 907 | break; |
5a2468f5 | 908 | } |
a76d924d DJ |
909 | |
910 | return result; | |
5a2468f5 JM |
911 | } |
912 | ||
444abaca DJ |
913 | enum { |
914 | PACKET_vCont = 0, | |
915 | PACKET_X, | |
916 | PACKET_qSymbol, | |
917 | PACKET_P, | |
918 | PACKET_p, | |
919 | PACKET_Z0, | |
920 | PACKET_Z1, | |
921 | PACKET_Z2, | |
922 | PACKET_Z3, | |
923 | PACKET_Z4, | |
a6b151f1 DJ |
924 | PACKET_vFile_open, |
925 | PACKET_vFile_pread, | |
926 | PACKET_vFile_pwrite, | |
927 | PACKET_vFile_close, | |
928 | PACKET_vFile_unlink, | |
0876f84a | 929 | PACKET_qXfer_auxv, |
23181151 | 930 | PACKET_qXfer_features, |
cfa9d6d9 | 931 | PACKET_qXfer_libraries, |
fd79ecee | 932 | PACKET_qXfer_memory_map, |
0e7f50da UW |
933 | PACKET_qXfer_spu_read, |
934 | PACKET_qXfer_spu_write, | |
444abaca | 935 | PACKET_qGetTLSAddr, |
be2a5f71 | 936 | PACKET_qSupported, |
89be2091 | 937 | PACKET_QPassSignals, |
08388c79 | 938 | PACKET_qSearch_memory, |
2d717e4f DJ |
939 | PACKET_vAttach, |
940 | PACKET_vRun, | |
444abaca DJ |
941 | PACKET_MAX |
942 | }; | |
506fb367 | 943 | |
444abaca | 944 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 MS |
945 | |
946 | static void | |
444abaca DJ |
947 | set_remote_protocol_packet_cmd (char *args, int from_tty, |
948 | struct cmd_list_element *c) | |
dc8acb97 | 949 | { |
444abaca | 950 | struct packet_config *packet; |
dc8acb97 | 951 | |
444abaca DJ |
952 | for (packet = remote_protocol_packets; |
953 | packet < &remote_protocol_packets[PACKET_MAX]; | |
954 | packet++) | |
955 | { | |
956 | if (&packet->detect == c->var) | |
957 | { | |
958 | update_packet_config (packet); | |
959 | return; | |
960 | } | |
961 | } | |
962 | internal_error (__FILE__, __LINE__, "Could not find config for %s", | |
963 | c->name); | |
dc8acb97 MS |
964 | } |
965 | ||
5a2468f5 | 966 | static void |
444abaca DJ |
967 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
968 | struct cmd_list_element *c, | |
969 | const char *value) | |
5a2468f5 | 970 | { |
444abaca | 971 | struct packet_config *packet; |
5a2468f5 | 972 | |
444abaca DJ |
973 | for (packet = remote_protocol_packets; |
974 | packet < &remote_protocol_packets[PACKET_MAX]; | |
975 | packet++) | |
976 | { | |
977 | if (&packet->detect == c->var) | |
978 | { | |
979 | show_packet_config_cmd (packet); | |
980 | return; | |
981 | } | |
982 | } | |
983 | internal_error (__FILE__, __LINE__, "Could not find config for %s", | |
984 | c->name); | |
5a2468f5 JM |
985 | } |
986 | ||
d471ea57 AC |
987 | /* Should we try one of the 'Z' requests? */ |
988 | ||
989 | enum Z_packet_type | |
990 | { | |
991 | Z_PACKET_SOFTWARE_BP, | |
992 | Z_PACKET_HARDWARE_BP, | |
993 | Z_PACKET_WRITE_WP, | |
994 | Z_PACKET_READ_WP, | |
995 | Z_PACKET_ACCESS_WP, | |
996 | NR_Z_PACKET_TYPES | |
997 | }; | |
96baa820 | 998 | |
d471ea57 | 999 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 1000 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 1001 | |
7f19b9a2 | 1002 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
1003 | |
1004 | static void | |
fba45db2 KB |
1005 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
1006 | struct cmd_list_element *c) | |
96baa820 | 1007 | { |
d471ea57 AC |
1008 | int i; |
1009 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
1010 | { | |
444abaca DJ |
1011 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
1012 | update_packet_config (&remote_protocol_packets[PACKET_Z0 + i]); | |
d471ea57 | 1013 | } |
96baa820 JM |
1014 | } |
1015 | ||
1016 | static void | |
08546159 AC |
1017 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
1018 | struct cmd_list_element *c, | |
1019 | const char *value) | |
96baa820 | 1020 | { |
d471ea57 AC |
1021 | int i; |
1022 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
1023 | { | |
444abaca | 1024 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 1025 | } |
96baa820 JM |
1026 | } |
1027 | ||
9d1f7ab2 MS |
1028 | /* Should we try the 'ThreadInfo' query packet? |
1029 | ||
1030 | This variable (NOT available to the user: auto-detect only!) | |
1031 | determines whether GDB will use the new, simpler "ThreadInfo" | |
1032 | query or the older, more complex syntax for thread queries. | |
802188a7 | 1033 | This is an auto-detect variable (set to true at each connect, |
9d1f7ab2 MS |
1034 | and set to false when the target fails to recognize it). */ |
1035 | ||
1036 | static int use_threadinfo_query; | |
1037 | static int use_threadextra_query; | |
1038 | ||
23860348 | 1039 | /* Tokens for use by the asynchronous signal handlers for SIGINT. */ |
d5d6fca5 DJ |
1040 | static struct async_signal_handler *sigint_remote_twice_token; |
1041 | static struct async_signal_handler *sigint_remote_token; | |
43ff13b4 | 1042 | |
c906108c SS |
1043 | \f |
1044 | ||
c5aa993b | 1045 | |
c906108c SS |
1046 | /* These are the threads which we last sent to the remote system. |
1047 | -1 for all or -2 for not sent yet. */ | |
1048 | static int general_thread; | |
cce74817 | 1049 | static int continue_thread; |
c906108c SS |
1050 | |
1051 | /* Call this function as a result of | |
1052 | 1) A halt indication (T packet) containing a thread id | |
1053 | 2) A direct query of currthread | |
1054 | 3) Successful execution of set thread | |
1055 | */ | |
1056 | ||
1057 | static void | |
fba45db2 | 1058 | record_currthread (int currthread) |
c906108c | 1059 | { |
c906108c | 1060 | general_thread = currthread; |
cce74817 | 1061 | |
c906108c SS |
1062 | /* If this is a new thread, add it to GDB's thread list. |
1063 | If we leave it up to WFI to do this, bad things will happen. */ | |
39f77062 | 1064 | if (!in_thread_list (pid_to_ptid (currthread))) |
93815fbf | 1065 | add_thread (pid_to_ptid (currthread)); |
c906108c SS |
1066 | } |
1067 | ||
89be2091 DJ |
1068 | static char *last_pass_packet; |
1069 | ||
1070 | /* If 'QPassSignals' is supported, tell the remote stub what signals | |
1071 | it can simply pass through to the inferior without reporting. */ | |
1072 | ||
1073 | static void | |
1074 | remote_pass_signals (void) | |
1075 | { | |
1076 | if (remote_protocol_packets[PACKET_QPassSignals].support != PACKET_DISABLE) | |
1077 | { | |
1078 | char *pass_packet, *p; | |
1079 | int numsigs = (int) TARGET_SIGNAL_LAST; | |
1080 | int count = 0, i; | |
1081 | ||
1082 | gdb_assert (numsigs < 256); | |
1083 | for (i = 0; i < numsigs; i++) | |
1084 | { | |
1085 | if (signal_stop_state (i) == 0 | |
1086 | && signal_print_state (i) == 0 | |
1087 | && signal_pass_state (i) == 1) | |
1088 | count++; | |
1089 | } | |
1090 | pass_packet = xmalloc (count * 3 + strlen ("QPassSignals:") + 1); | |
1091 | strcpy (pass_packet, "QPassSignals:"); | |
1092 | p = pass_packet + strlen (pass_packet); | |
1093 | for (i = 0; i < numsigs; i++) | |
1094 | { | |
1095 | if (signal_stop_state (i) == 0 | |
1096 | && signal_print_state (i) == 0 | |
1097 | && signal_pass_state (i) == 1) | |
1098 | { | |
1099 | if (i >= 16) | |
1100 | *p++ = tohex (i >> 4); | |
1101 | *p++ = tohex (i & 15); | |
1102 | if (count) | |
1103 | *p++ = ';'; | |
1104 | else | |
1105 | break; | |
1106 | count--; | |
1107 | } | |
1108 | } | |
1109 | *p = 0; | |
1110 | if (!last_pass_packet || strcmp (last_pass_packet, pass_packet)) | |
1111 | { | |
1112 | struct remote_state *rs = get_remote_state (); | |
1113 | char *buf = rs->buf; | |
1114 | ||
1115 | putpkt (pass_packet); | |
1116 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1117 | packet_ok (buf, &remote_protocol_packets[PACKET_QPassSignals]); | |
1118 | if (last_pass_packet) | |
1119 | xfree (last_pass_packet); | |
1120 | last_pass_packet = pass_packet; | |
1121 | } | |
1122 | else | |
1123 | xfree (pass_packet); | |
1124 | } | |
1125 | } | |
1126 | ||
c906108c SS |
1127 | #define MAGIC_NULL_PID 42000 |
1128 | ||
1129 | static void | |
fba45db2 | 1130 | set_thread (int th, int gen) |
c906108c | 1131 | { |
d01949b6 | 1132 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 1133 | char *buf = rs->buf; |
cce74817 | 1134 | int state = gen ? general_thread : continue_thread; |
c906108c SS |
1135 | |
1136 | if (state == th) | |
1137 | return; | |
1138 | ||
1139 | buf[0] = 'H'; | |
1140 | buf[1] = gen ? 'g' : 'c'; | |
1141 | if (th == MAGIC_NULL_PID) | |
1142 | { | |
1143 | buf[2] = '0'; | |
1144 | buf[3] = '\0'; | |
1145 | } | |
1146 | else if (th < 0) | |
ea9c271d | 1147 | xsnprintf (&buf[2], get_remote_packet_size () - 2, "-%x", -th); |
c906108c | 1148 | else |
ea9c271d | 1149 | xsnprintf (&buf[2], get_remote_packet_size () - 2, "%x", th); |
c906108c | 1150 | putpkt (buf); |
6d820c5c | 1151 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 1152 | if (gen) |
c5aa993b | 1153 | general_thread = th; |
c906108c | 1154 | else |
cce74817 | 1155 | continue_thread = th; |
c906108c SS |
1156 | } |
1157 | \f | |
1158 | /* Return nonzero if the thread TH is still alive on the remote system. */ | |
1159 | ||
1160 | static int | |
39f77062 | 1161 | remote_thread_alive (ptid_t ptid) |
c906108c | 1162 | { |
6d820c5c | 1163 | struct remote_state *rs = get_remote_state (); |
39f77062 | 1164 | int tid = PIDGET (ptid); |
c906108c | 1165 | |
cce74817 | 1166 | if (tid < 0) |
2e9f7625 | 1167 | xsnprintf (rs->buf, get_remote_packet_size (), "T-%08x", -tid); |
c906108c | 1168 | else |
2e9f7625 DJ |
1169 | xsnprintf (rs->buf, get_remote_packet_size (), "T%08x", tid); |
1170 | putpkt (rs->buf); | |
6d820c5c | 1171 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1172 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
1173 | } |
1174 | ||
1175 | /* About these extended threadlist and threadinfo packets. They are | |
1176 | variable length packets but, the fields within them are often fixed | |
1177 | length. They are redundent enough to send over UDP as is the | |
1178 | remote protocol in general. There is a matching unit test module | |
1179 | in libstub. */ | |
1180 | ||
cce74817 JM |
1181 | #define OPAQUETHREADBYTES 8 |
1182 | ||
1183 | /* a 64 bit opaque identifier */ | |
1184 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
1185 | ||
23860348 MS |
1186 | /* WARNING: This threadref data structure comes from the remote O.S., |
1187 | libstub protocol encoding, and remote.c. it is not particularly | |
1188 | changable. */ | |
cce74817 JM |
1189 | |
1190 | /* Right now, the internal structure is int. We want it to be bigger. | |
1191 | Plan to fix this. | |
c5aa993b | 1192 | */ |
cce74817 | 1193 | |
23860348 | 1194 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 1195 | |
9d1f7ab2 | 1196 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 1197 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
1198 | |
1199 | struct gdb_ext_thread_info | |
c5aa993b | 1200 | { |
23860348 | 1201 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 1202 | int active; /* Has state interesting to GDB? |
23860348 | 1203 | regs, stack. */ |
2bc416ba | 1204 | char display[256]; /* Brief state display, name, |
cedea757 | 1205 | blocked/suspended. */ |
23860348 | 1206 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 1207 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 1208 | whatever. */ |
c5aa993b | 1209 | }; |
cce74817 JM |
1210 | |
1211 | /* The volume of remote transfers can be limited by submitting | |
1212 | a mask containing bits specifying the desired information. | |
1213 | Use a union of these values as the 'selection' parameter to | |
1214 | get_thread_info. FIXME: Make these TAG names more thread specific. | |
c5aa993b | 1215 | */ |
cce74817 JM |
1216 | |
1217 | #define TAG_THREADID 1 | |
1218 | #define TAG_EXISTS 2 | |
1219 | #define TAG_DISPLAY 4 | |
1220 | #define TAG_THREADNAME 8 | |
c5aa993b | 1221 | #define TAG_MOREDISPLAY 16 |
cce74817 | 1222 | |
23860348 | 1223 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 1224 | |
b2dd6311 | 1225 | char *unpack_varlen_hex (char *buff, ULONGEST *result); |
cce74817 | 1226 | |
a14ed312 | 1227 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 1228 | |
a14ed312 | 1229 | static char *pack_nibble (char *buf, int nibble); |
cce74817 | 1230 | |
23860348 | 1231 | static char *pack_hex_byte (char *pkt, int /* unsigned char */ byte); |
cce74817 | 1232 | |
a14ed312 | 1233 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 1234 | |
a14ed312 | 1235 | static char *pack_int (char *buf, int value); |
cce74817 | 1236 | |
a14ed312 | 1237 | static char *unpack_int (char *buf, int *value); |
cce74817 | 1238 | |
a14ed312 | 1239 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 1240 | |
23860348 | 1241 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 1242 | |
23860348 | 1243 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 1244 | |
23860348 | 1245 | void int_to_threadref (threadref *id, int value); |
cce74817 | 1246 | |
23860348 | 1247 | static int threadref_to_int (threadref *ref); |
cce74817 | 1248 | |
23860348 | 1249 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 1250 | |
23860348 | 1251 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 1252 | |
2bc416ba | 1253 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 1254 | threadref *id); |
cce74817 | 1255 | |
a14ed312 | 1256 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 1257 | threadref *expectedref, |
a14ed312 KB |
1258 | struct gdb_ext_thread_info |
1259 | *info); | |
cce74817 JM |
1260 | |
1261 | ||
2bc416ba | 1262 | static int remote_get_threadinfo (threadref *threadid, |
23860348 | 1263 | int fieldset, /*TAG mask */ |
a14ed312 | 1264 | struct gdb_ext_thread_info *info); |
cce74817 | 1265 | |
a14ed312 KB |
1266 | static char *pack_threadlist_request (char *pkt, int startflag, |
1267 | int threadcount, | |
23860348 | 1268 | threadref *nextthread); |
cce74817 | 1269 | |
a14ed312 KB |
1270 | static int parse_threadlist_response (char *pkt, |
1271 | int result_limit, | |
23860348 | 1272 | threadref *original_echo, |
2bc416ba | 1273 | threadref *resultlist, |
23860348 | 1274 | int *doneflag); |
cce74817 | 1275 | |
a14ed312 | 1276 | static int remote_get_threadlist (int startflag, |
23860348 | 1277 | threadref *nextthread, |
a14ed312 KB |
1278 | int result_limit, |
1279 | int *done, | |
2bc416ba | 1280 | int *result_count, |
23860348 | 1281 | threadref *threadlist); |
cce74817 | 1282 | |
23860348 | 1283 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 1284 | |
a14ed312 KB |
1285 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
1286 | void *context, int looplimit); | |
cce74817 | 1287 | |
23860348 | 1288 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 1289 | |
23860348 | 1290 | /* Encode 64 bits in 16 chars of hex. */ |
c906108c SS |
1291 | |
1292 | static const char hexchars[] = "0123456789abcdef"; | |
1293 | ||
1294 | static int | |
fba45db2 | 1295 | ishex (int ch, int *val) |
c906108c SS |
1296 | { |
1297 | if ((ch >= 'a') && (ch <= 'f')) | |
1298 | { | |
1299 | *val = ch - 'a' + 10; | |
1300 | return 1; | |
1301 | } | |
1302 | if ((ch >= 'A') && (ch <= 'F')) | |
1303 | { | |
1304 | *val = ch - 'A' + 10; | |
1305 | return 1; | |
1306 | } | |
1307 | if ((ch >= '0') && (ch <= '9')) | |
1308 | { | |
1309 | *val = ch - '0'; | |
1310 | return 1; | |
1311 | } | |
1312 | return 0; | |
1313 | } | |
1314 | ||
1315 | static int | |
fba45db2 | 1316 | stubhex (int ch) |
c906108c SS |
1317 | { |
1318 | if (ch >= 'a' && ch <= 'f') | |
1319 | return ch - 'a' + 10; | |
1320 | if (ch >= '0' && ch <= '9') | |
1321 | return ch - '0'; | |
1322 | if (ch >= 'A' && ch <= 'F') | |
1323 | return ch - 'A' + 10; | |
1324 | return -1; | |
1325 | } | |
1326 | ||
1327 | static int | |
fba45db2 | 1328 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
1329 | { |
1330 | int nibble; | |
1331 | int retval = 0; | |
1332 | ||
1333 | while (fieldlength) | |
1334 | { | |
1335 | nibble = stubhex (*buff++); | |
1336 | retval |= nibble; | |
1337 | fieldlength--; | |
1338 | if (fieldlength) | |
1339 | retval = retval << 4; | |
1340 | } | |
1341 | return retval; | |
1342 | } | |
1343 | ||
1344 | char * | |
fba45db2 | 1345 | unpack_varlen_hex (char *buff, /* packet to parse */ |
b2dd6311 | 1346 | ULONGEST *result) |
c906108c SS |
1347 | { |
1348 | int nibble; | |
d49c44d5 | 1349 | ULONGEST retval = 0; |
c906108c SS |
1350 | |
1351 | while (ishex (*buff, &nibble)) | |
1352 | { | |
1353 | buff++; | |
1354 | retval = retval << 4; | |
1355 | retval |= nibble & 0x0f; | |
1356 | } | |
1357 | *result = retval; | |
1358 | return buff; | |
1359 | } | |
1360 | ||
1361 | static char * | |
fba45db2 | 1362 | unpack_nibble (char *buf, int *val) |
c906108c | 1363 | { |
b7589f7d | 1364 | *val = fromhex (*buf++); |
c906108c SS |
1365 | return buf; |
1366 | } | |
1367 | ||
1368 | static char * | |
fba45db2 | 1369 | pack_nibble (char *buf, int nibble) |
c906108c SS |
1370 | { |
1371 | *buf++ = hexchars[(nibble & 0x0f)]; | |
1372 | return buf; | |
1373 | } | |
1374 | ||
1375 | static char * | |
fba45db2 | 1376 | pack_hex_byte (char *pkt, int byte) |
c906108c SS |
1377 | { |
1378 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
1379 | *pkt++ = hexchars[(byte & 0xf)]; | |
1380 | return pkt; | |
1381 | } | |
1382 | ||
1383 | static char * | |
fba45db2 | 1384 | unpack_byte (char *buf, int *value) |
c906108c SS |
1385 | { |
1386 | *value = stub_unpack_int (buf, 2); | |
1387 | return buf + 2; | |
1388 | } | |
1389 | ||
1390 | static char * | |
fba45db2 | 1391 | pack_int (char *buf, int value) |
c906108c SS |
1392 | { |
1393 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
1394 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
1395 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
1396 | buf = pack_hex_byte (buf, (value & 0xff)); | |
1397 | return buf; | |
1398 | } | |
1399 | ||
1400 | static char * | |
fba45db2 | 1401 | unpack_int (char *buf, int *value) |
c906108c SS |
1402 | { |
1403 | *value = stub_unpack_int (buf, 8); | |
1404 | return buf + 8; | |
1405 | } | |
1406 | ||
23860348 | 1407 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 1408 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
1409 | |
1410 | static char * | |
fba45db2 | 1411 | pack_string (char *pkt, char *string) |
c906108c SS |
1412 | { |
1413 | char ch; | |
1414 | int len; | |
1415 | ||
1416 | len = strlen (string); | |
1417 | if (len > 200) | |
23860348 | 1418 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
1419 | pkt = pack_hex_byte (pkt, len); |
1420 | while (len-- > 0) | |
1421 | { | |
1422 | ch = *string++; | |
1423 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 1424 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
1425 | *pkt++ = ch; |
1426 | } | |
1427 | return pkt; | |
1428 | } | |
1429 | #endif /* 0 (unused) */ | |
1430 | ||
1431 | static char * | |
fba45db2 | 1432 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
1433 | { |
1434 | while (length--) | |
1435 | *dest++ = *src++; | |
1436 | *dest = '\0'; | |
1437 | return src; | |
1438 | } | |
1439 | ||
1440 | static char * | |
fba45db2 | 1441 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
1442 | { |
1443 | char *limit; | |
1444 | unsigned char *altid; | |
1445 | ||
1446 | altid = (unsigned char *) id; | |
1447 | limit = pkt + BUF_THREAD_ID_SIZE; | |
1448 | while (pkt < limit) | |
1449 | pkt = pack_hex_byte (pkt, *altid++); | |
1450 | return pkt; | |
1451 | } | |
1452 | ||
1453 | ||
1454 | static char * | |
fba45db2 | 1455 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
1456 | { |
1457 | char *altref; | |
1458 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
1459 | int x, y; | |
1460 | ||
1461 | altref = (char *) id; | |
1462 | ||
1463 | while (inbuf < limit) | |
1464 | { | |
1465 | x = stubhex (*inbuf++); | |
1466 | y = stubhex (*inbuf++); | |
1467 | *altref++ = (x << 4) | y; | |
1468 | } | |
1469 | return inbuf; | |
1470 | } | |
1471 | ||
1472 | /* Externally, threadrefs are 64 bits but internally, they are still | |
1473 | ints. This is due to a mismatch of specifications. We would like | |
1474 | to use 64bit thread references internally. This is an adapter | |
1475 | function. */ | |
1476 | ||
1477 | void | |
fba45db2 | 1478 | int_to_threadref (threadref *id, int value) |
c906108c SS |
1479 | { |
1480 | unsigned char *scan; | |
1481 | ||
1482 | scan = (unsigned char *) id; | |
1483 | { | |
1484 | int i = 4; | |
1485 | while (i--) | |
1486 | *scan++ = 0; | |
1487 | } | |
1488 | *scan++ = (value >> 24) & 0xff; | |
1489 | *scan++ = (value >> 16) & 0xff; | |
1490 | *scan++ = (value >> 8) & 0xff; | |
1491 | *scan++ = (value & 0xff); | |
1492 | } | |
1493 | ||
1494 | static int | |
fba45db2 | 1495 | threadref_to_int (threadref *ref) |
c906108c SS |
1496 | { |
1497 | int i, value = 0; | |
1498 | unsigned char *scan; | |
1499 | ||
cfd77fa1 | 1500 | scan = *ref; |
c906108c SS |
1501 | scan += 4; |
1502 | i = 4; | |
1503 | while (i-- > 0) | |
1504 | value = (value << 8) | ((*scan++) & 0xff); | |
1505 | return value; | |
1506 | } | |
1507 | ||
1508 | static void | |
fba45db2 | 1509 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
1510 | { |
1511 | int i; | |
1512 | unsigned char *csrc, *cdest; | |
1513 | ||
1514 | csrc = (unsigned char *) src; | |
1515 | cdest = (unsigned char *) dest; | |
1516 | i = 8; | |
1517 | while (i--) | |
1518 | *cdest++ = *csrc++; | |
1519 | } | |
1520 | ||
1521 | static int | |
fba45db2 | 1522 | threadmatch (threadref *dest, threadref *src) |
c906108c | 1523 | { |
23860348 | 1524 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
1525 | #if 0 |
1526 | unsigned char *srcp, *destp; | |
1527 | int i, result; | |
1528 | srcp = (char *) src; | |
1529 | destp = (char *) dest; | |
1530 | ||
1531 | result = 1; | |
1532 | while (i-- > 0) | |
1533 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
1534 | return result; | |
1535 | #endif | |
1536 | return 1; | |
1537 | } | |
1538 | ||
1539 | /* | |
c5aa993b JM |
1540 | threadid:1, # always request threadid |
1541 | context_exists:2, | |
1542 | display:4, | |
1543 | unique_name:8, | |
1544 | more_display:16 | |
1545 | */ | |
c906108c SS |
1546 | |
1547 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
1548 | ||
1549 | static char * | |
fba45db2 | 1550 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 1551 | { |
23860348 MS |
1552 | *pkt++ = 'q'; /* Info Query */ |
1553 | *pkt++ = 'P'; /* process or thread info */ | |
1554 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 1555 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 1556 | *pkt = '\0'; /* terminate */ |
c906108c SS |
1557 | return pkt; |
1558 | } | |
1559 | ||
23860348 | 1560 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 1561 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 1562 | add more fields as time goes by. */ |
c906108c | 1563 | |
23860348 | 1564 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 1565 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 1566 | fetch registers and its stack? */ |
c5aa993b | 1567 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 1568 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 1569 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 1570 | the process. */ |
c906108c SS |
1571 | |
1572 | static int | |
fba45db2 KB |
1573 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
1574 | struct gdb_ext_thread_info *info) | |
c906108c | 1575 | { |
d01949b6 | 1576 | struct remote_state *rs = get_remote_state (); |
c906108c | 1577 | int mask, length; |
cfd77fa1 | 1578 | int tag; |
c906108c | 1579 | threadref ref; |
6d820c5c | 1580 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
1581 | int retval = 1; |
1582 | ||
23860348 | 1583 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
1584 | info->active = 0; |
1585 | info->display[0] = '\0'; | |
1586 | info->shortname[0] = '\0'; | |
1587 | info->more_display[0] = '\0'; | |
1588 | ||
23860348 MS |
1589 | /* Assume the characters indicating the packet type have been |
1590 | stripped. */ | |
c906108c SS |
1591 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
1592 | pkt = unpack_threadid (pkt, &ref); | |
1593 | ||
1594 | if (mask == 0) | |
8a3fe4f8 | 1595 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 1596 | if (!threadmatch (&ref, expectedref)) |
23860348 | 1597 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 1598 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
1599 | return 0; |
1600 | } | |
1601 | copy_threadref (&info->threadid, &ref); | |
1602 | ||
23860348 | 1603 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 1604 | |
23860348 MS |
1605 | /* Packets are terminated with nulls. */ |
1606 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
1607 | { |
1608 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
1609 | pkt = unpack_byte (pkt, &length); /* length */ |
1610 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 1611 | { |
8a3fe4f8 | 1612 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
1613 | retval = 0; |
1614 | break; | |
1615 | } | |
1616 | if (tag == TAG_THREADID) | |
1617 | { | |
1618 | if (length != 16) | |
1619 | { | |
8a3fe4f8 | 1620 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
1621 | retval = 0; |
1622 | break; | |
1623 | } | |
1624 | pkt = unpack_threadid (pkt, &ref); | |
1625 | mask = mask & ~TAG_THREADID; | |
1626 | continue; | |
1627 | } | |
1628 | if (tag == TAG_EXISTS) | |
1629 | { | |
1630 | info->active = stub_unpack_int (pkt, length); | |
1631 | pkt += length; | |
1632 | mask = mask & ~(TAG_EXISTS); | |
1633 | if (length > 8) | |
1634 | { | |
8a3fe4f8 | 1635 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
1636 | retval = 0; |
1637 | break; | |
1638 | } | |
1639 | continue; | |
1640 | } | |
1641 | if (tag == TAG_THREADNAME) | |
1642 | { | |
1643 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
1644 | mask = mask & ~TAG_THREADNAME; | |
1645 | continue; | |
1646 | } | |
1647 | if (tag == TAG_DISPLAY) | |
1648 | { | |
1649 | pkt = unpack_string (pkt, &info->display[0], length); | |
1650 | mask = mask & ~TAG_DISPLAY; | |
1651 | continue; | |
1652 | } | |
1653 | if (tag == TAG_MOREDISPLAY) | |
1654 | { | |
1655 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
1656 | mask = mask & ~TAG_MOREDISPLAY; | |
1657 | continue; | |
1658 | } | |
8a3fe4f8 | 1659 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 1660 | break; /* Not a tag we know about. */ |
c906108c SS |
1661 | } |
1662 | return retval; | |
1663 | } | |
1664 | ||
1665 | static int | |
fba45db2 KB |
1666 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
1667 | struct gdb_ext_thread_info *info) | |
c906108c | 1668 | { |
d01949b6 | 1669 | struct remote_state *rs = get_remote_state (); |
c906108c | 1670 | int result; |
c906108c | 1671 | |
2e9f7625 DJ |
1672 | pack_threadinfo_request (rs->buf, fieldset, threadid); |
1673 | putpkt (rs->buf); | |
6d820c5c | 1674 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1675 | result = remote_unpack_thread_info_response (rs->buf + 2, |
23860348 | 1676 | threadid, info); |
c906108c SS |
1677 | return result; |
1678 | } | |
1679 | ||
c906108c SS |
1680 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
1681 | ||
1682 | static char * | |
fba45db2 KB |
1683 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
1684 | threadref *nextthread) | |
c906108c SS |
1685 | { |
1686 | *pkt++ = 'q'; /* info query packet */ | |
1687 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 1688 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
1689 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
1690 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
1691 | *pkt = '\0'; | |
1692 | return pkt; | |
1693 | } | |
1694 | ||
1695 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
1696 | ||
1697 | static int | |
fba45db2 KB |
1698 | parse_threadlist_response (char *pkt, int result_limit, |
1699 | threadref *original_echo, threadref *resultlist, | |
1700 | int *doneflag) | |
c906108c | 1701 | { |
d01949b6 | 1702 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1703 | char *limit; |
1704 | int count, resultcount, done; | |
1705 | ||
1706 | resultcount = 0; | |
1707 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 1708 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 1709 | /* done parse past here */ |
c906108c SS |
1710 | pkt = unpack_byte (pkt, &count); /* count field */ |
1711 | pkt = unpack_nibble (pkt, &done); | |
1712 | /* The first threadid is the argument threadid. */ | |
1713 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
1714 | while ((count-- > 0) && (pkt < limit)) | |
1715 | { | |
1716 | pkt = unpack_threadid (pkt, resultlist++); | |
1717 | if (resultcount++ >= result_limit) | |
1718 | break; | |
1719 | } | |
1720 | if (doneflag) | |
1721 | *doneflag = done; | |
1722 | return resultcount; | |
1723 | } | |
1724 | ||
1725 | static int | |
fba45db2 KB |
1726 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
1727 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 1728 | { |
d01949b6 | 1729 | struct remote_state *rs = get_remote_state (); |
c906108c | 1730 | static threadref echo_nextthread; |
c906108c SS |
1731 | int result = 1; |
1732 | ||
23860348 | 1733 | /* Trancate result limit to be smaller than the packet size. */ |
ea9c271d DJ |
1734 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) >= get_remote_packet_size ()) |
1735 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; | |
c906108c | 1736 | |
6d820c5c DJ |
1737 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
1738 | putpkt (rs->buf); | |
1739 | getpkt (&rs->buf, &rs->buf_size, 0); | |
c906108c | 1740 | |
d8f2712d VP |
1741 | if (*rs->buf == '\0') |
1742 | *result_count = 0; | |
1743 | else | |
1744 | *result_count = | |
1745 | parse_threadlist_response (rs->buf + 2, result_limit, &echo_nextthread, | |
1746 | threadlist, done); | |
c906108c SS |
1747 | |
1748 | if (!threadmatch (&echo_nextthread, nextthread)) | |
1749 | { | |
23860348 MS |
1750 | /* FIXME: This is a good reason to drop the packet. */ |
1751 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
1752 | /* Possabilities : |
1753 | retransmit immediatly - race conditions | |
1754 | retransmit after timeout - yes | |
1755 | exit | |
1756 | wait for packet, then exit | |
1757 | */ | |
8a3fe4f8 | 1758 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 1759 | return 0; /* I choose simply exiting. */ |
c906108c SS |
1760 | } |
1761 | if (*result_count <= 0) | |
1762 | { | |
1763 | if (*done != 1) | |
1764 | { | |
8a3fe4f8 | 1765 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
1766 | result = 0; |
1767 | } | |
1768 | return result; /* break; */ | |
1769 | } | |
1770 | if (*result_count > result_limit) | |
1771 | { | |
1772 | *result_count = 0; | |
8a3fe4f8 | 1773 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
1774 | return 0; |
1775 | } | |
1776 | return result; | |
1777 | } | |
1778 | ||
23860348 MS |
1779 | /* This is the interface between remote and threads, remotes upper |
1780 | interface. */ | |
c906108c SS |
1781 | |
1782 | /* remote_find_new_threads retrieves the thread list and for each | |
1783 | thread in the list, looks up the thread in GDB's internal list, | |
1784 | ading the thread if it does not already exist. This involves | |
1785 | getting partial thread lists from the remote target so, polling the | |
1786 | quit_flag is required. */ | |
1787 | ||
1788 | ||
23860348 | 1789 | /* About this many threadisds fit in a packet. */ |
c906108c SS |
1790 | |
1791 | #define MAXTHREADLISTRESULTS 32 | |
1792 | ||
1793 | static int | |
fba45db2 KB |
1794 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
1795 | int looplimit) | |
c906108c SS |
1796 | { |
1797 | int done, i, result_count; | |
1798 | int startflag = 1; | |
1799 | int result = 1; | |
1800 | int loopcount = 0; | |
1801 | static threadref nextthread; | |
1802 | static threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
1803 | ||
1804 | done = 0; | |
1805 | while (!done) | |
1806 | { | |
1807 | if (loopcount++ > looplimit) | |
1808 | { | |
1809 | result = 0; | |
8a3fe4f8 | 1810 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
1811 | break; |
1812 | } | |
1813 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS, | |
1814 | &done, &result_count, resultthreadlist)) | |
1815 | { | |
1816 | result = 0; | |
1817 | break; | |
1818 | } | |
23860348 | 1819 | /* Clear for later iterations. */ |
c906108c SS |
1820 | startflag = 0; |
1821 | /* Setup to resume next batch of thread references, set nextthread. */ | |
1822 | if (result_count >= 1) | |
1823 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |
1824 | i = 0; | |
1825 | while (result_count--) | |
1826 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |
1827 | break; | |
1828 | } | |
1829 | return result; | |
1830 | } | |
1831 | ||
1832 | static int | |
fba45db2 | 1833 | remote_newthread_step (threadref *ref, void *context) |
c906108c | 1834 | { |
39f77062 | 1835 | ptid_t ptid; |
c906108c | 1836 | |
39f77062 KB |
1837 | ptid = pid_to_ptid (threadref_to_int (ref)); |
1838 | ||
1839 | if (!in_thread_list (ptid)) | |
1840 | add_thread (ptid); | |
c906108c SS |
1841 | return 1; /* continue iterator */ |
1842 | } | |
1843 | ||
1844 | #define CRAZY_MAX_THREADS 1000 | |
1845 | ||
39f77062 KB |
1846 | static ptid_t |
1847 | remote_current_thread (ptid_t oldpid) | |
c906108c | 1848 | { |
d01949b6 | 1849 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1850 | |
1851 | putpkt ("qC"); | |
6d820c5c | 1852 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1853 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
c273b20f JB |
1854 | /* Use strtoul here, so we'll correctly parse values whose highest |
1855 | bit is set. The protocol carries them as a simple series of | |
1856 | hex digits; in the absence of a sign, strtol will see such | |
1857 | values as positive numbers out of range for signed 'long', and | |
1858 | return LONG_MAX to indicate an overflow. */ | |
2e9f7625 | 1859 | return pid_to_ptid (strtoul (&rs->buf[2], NULL, 16)); |
c906108c SS |
1860 | else |
1861 | return oldpid; | |
1862 | } | |
1863 | ||
802188a7 RM |
1864 | /* Find new threads for info threads command. |
1865 | * Original version, using John Metzler's thread protocol. | |
9d1f7ab2 | 1866 | */ |
cce74817 JM |
1867 | |
1868 | static void | |
fba45db2 | 1869 | remote_find_new_threads (void) |
c906108c | 1870 | { |
c5aa993b JM |
1871 | remote_threadlist_iterator (remote_newthread_step, 0, |
1872 | CRAZY_MAX_THREADS); | |
39f77062 KB |
1873 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) /* ack ack ack */ |
1874 | inferior_ptid = remote_current_thread (inferior_ptid); | |
c906108c SS |
1875 | } |
1876 | ||
9d1f7ab2 MS |
1877 | /* |
1878 | * Find all threads for info threads command. | |
1879 | * Uses new thread protocol contributed by Cisco. | |
1880 | * Falls back and attempts to use the older method (above) | |
1881 | * if the target doesn't respond to the new method. | |
1882 | */ | |
1883 | ||
0f71a2f6 JM |
1884 | static void |
1885 | remote_threads_info (void) | |
1886 | { | |
d01949b6 | 1887 | struct remote_state *rs = get_remote_state (); |
085dd6e6 | 1888 | char *bufp; |
0f71a2f6 JM |
1889 | int tid; |
1890 | ||
1891 | if (remote_desc == 0) /* paranoia */ | |
8a3fe4f8 | 1892 | error (_("Command can only be used when connected to the remote target.")); |
0f71a2f6 | 1893 | |
9d1f7ab2 MS |
1894 | if (use_threadinfo_query) |
1895 | { | |
1896 | putpkt ("qfThreadInfo"); | |
6d820c5c | 1897 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1898 | bufp = rs->buf; |
9d1f7ab2 | 1899 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 1900 | { |
9d1f7ab2 MS |
1901 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
1902 | { | |
1903 | do | |
1904 | { | |
c273b20f JB |
1905 | /* Use strtoul here, so we'll correctly parse values |
1906 | whose highest bit is set. The protocol carries | |
1907 | them as a simple series of hex digits; in the | |
1908 | absence of a sign, strtol will see such values as | |
1909 | positive numbers out of range for signed 'long', | |
1910 | and return LONG_MAX to indicate an overflow. */ | |
1911 | tid = strtoul (bufp, &bufp, 16); | |
39f77062 KB |
1912 | if (tid != 0 && !in_thread_list (pid_to_ptid (tid))) |
1913 | add_thread (pid_to_ptid (tid)); | |
9d1f7ab2 MS |
1914 | } |
1915 | while (*bufp++ == ','); /* comma-separated list */ | |
1916 | putpkt ("qsThreadInfo"); | |
6d820c5c | 1917 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1918 | bufp = rs->buf; |
9d1f7ab2 MS |
1919 | } |
1920 | return; /* done */ | |
1921 | } | |
1922 | } | |
1923 | ||
23860348 | 1924 | /* Else fall back to old method based on jmetzler protocol. */ |
9d1f7ab2 MS |
1925 | use_threadinfo_query = 0; |
1926 | remote_find_new_threads (); | |
1927 | return; | |
1928 | } | |
1929 | ||
802188a7 | 1930 | /* |
9d1f7ab2 MS |
1931 | * Collect a descriptive string about the given thread. |
1932 | * The target may say anything it wants to about the thread | |
1933 | * (typically info about its blocked / runnable state, name, etc.). | |
1934 | * This string will appear in the info threads display. | |
802188a7 | 1935 | * |
9d1f7ab2 MS |
1936 | * Optional: targets are not required to implement this function. |
1937 | */ | |
1938 | ||
1939 | static char * | |
1940 | remote_threads_extra_info (struct thread_info *tp) | |
1941 | { | |
d01949b6 | 1942 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
1943 | int result; |
1944 | int set; | |
1945 | threadref id; | |
1946 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 1947 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
1948 | int n = 0; /* position in display_buf */ |
1949 | ||
1950 | if (remote_desc == 0) /* paranoia */ | |
8e65ff28 | 1951 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 1952 | _("remote_threads_extra_info")); |
9d1f7ab2 MS |
1953 | |
1954 | if (use_threadextra_query) | |
1955 | { | |
2e9f7625 | 1956 | xsnprintf (rs->buf, get_remote_packet_size (), "qThreadExtraInfo,%x", |
ecbc58df | 1957 | PIDGET (tp->ptid)); |
2e9f7625 | 1958 | putpkt (rs->buf); |
6d820c5c | 1959 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1960 | if (rs->buf[0] != 0) |
9d1f7ab2 | 1961 | { |
2e9f7625 DJ |
1962 | n = min (strlen (rs->buf) / 2, sizeof (display_buf)); |
1963 | result = hex2bin (rs->buf, (gdb_byte *) display_buf, n); | |
30559e10 | 1964 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
1965 | return display_buf; |
1966 | } | |
0f71a2f6 | 1967 | } |
9d1f7ab2 MS |
1968 | |
1969 | /* If the above query fails, fall back to the old method. */ | |
1970 | use_threadextra_query = 0; | |
1971 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
1972 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
39f77062 | 1973 | int_to_threadref (&id, PIDGET (tp->ptid)); |
9d1f7ab2 MS |
1974 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
1975 | if (threadinfo.active) | |
0f71a2f6 | 1976 | { |
9d1f7ab2 | 1977 | if (*threadinfo.shortname) |
2bc416ba | 1978 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
ecbc58df | 1979 | " Name: %s,", threadinfo.shortname); |
9d1f7ab2 | 1980 | if (*threadinfo.display) |
2bc416ba | 1981 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 1982 | " State: %s,", threadinfo.display); |
9d1f7ab2 | 1983 | if (*threadinfo.more_display) |
2bc416ba | 1984 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 1985 | " Priority: %s", threadinfo.more_display); |
9d1f7ab2 MS |
1986 | |
1987 | if (n > 0) | |
c5aa993b | 1988 | { |
23860348 | 1989 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
1990 | if (',' == display_buf[n-1]) |
1991 | display_buf[n-1] = ' '; | |
1992 | return display_buf; | |
c5aa993b | 1993 | } |
0f71a2f6 | 1994 | } |
9d1f7ab2 | 1995 | return NULL; |
0f71a2f6 | 1996 | } |
c906108c | 1997 | \f |
c5aa993b | 1998 | |
24b06219 | 1999 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
2000 | |
2001 | static void | |
fba45db2 | 2002 | extended_remote_restart (void) |
c906108c | 2003 | { |
d01949b6 | 2004 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2005 | |
2006 | /* Send the restart command; for reasons I don't understand the | |
2007 | remote side really expects a number after the "R". */ | |
ea9c271d | 2008 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); |
6d820c5c | 2009 | putpkt (rs->buf); |
c906108c | 2010 | |
ad9a8f3f | 2011 | remote_fileio_reset (); |
c906108c SS |
2012 | } |
2013 | \f | |
2014 | /* Clean up connection to a remote debugger. */ | |
2015 | ||
c906108c | 2016 | static void |
fba45db2 | 2017 | remote_close (int quitting) |
c906108c SS |
2018 | { |
2019 | if (remote_desc) | |
2cd58942 | 2020 | serial_close (remote_desc); |
c906108c SS |
2021 | remote_desc = NULL; |
2022 | } | |
2023 | ||
23860348 | 2024 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
2025 | |
2026 | static void | |
fba45db2 | 2027 | get_offsets (void) |
c906108c | 2028 | { |
d01949b6 | 2029 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 2030 | char *buf; |
085dd6e6 | 2031 | char *ptr; |
31d99776 DJ |
2032 | int lose, num_segments = 0, do_sections, do_segments; |
2033 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
c906108c | 2034 | struct section_offsets *offs; |
31d99776 DJ |
2035 | struct symfile_segment_data *data; |
2036 | ||
2037 | if (symfile_objfile == NULL) | |
2038 | return; | |
c906108c SS |
2039 | |
2040 | putpkt ("qOffsets"); | |
6d820c5c | 2041 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2042 | buf = rs->buf; |
c906108c SS |
2043 | |
2044 | if (buf[0] == '\000') | |
2045 | return; /* Return silently. Stub doesn't support | |
23860348 | 2046 | this command. */ |
c906108c SS |
2047 | if (buf[0] == 'E') |
2048 | { | |
8a3fe4f8 | 2049 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
2050 | return; |
2051 | } | |
2052 | ||
2053 | /* Pick up each field in turn. This used to be done with scanf, but | |
2054 | scanf will make trouble if CORE_ADDR size doesn't match | |
2055 | conversion directives correctly. The following code will work | |
2056 | with any size of CORE_ADDR. */ | |
2057 | text_addr = data_addr = bss_addr = 0; | |
2058 | ptr = buf; | |
2059 | lose = 0; | |
2060 | ||
2061 | if (strncmp (ptr, "Text=", 5) == 0) | |
2062 | { | |
2063 | ptr += 5; | |
2064 | /* Don't use strtol, could lose on big values. */ | |
2065 | while (*ptr && *ptr != ';') | |
2066 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 2067 | |
31d99776 DJ |
2068 | if (strncmp (ptr, ";Data=", 6) == 0) |
2069 | { | |
2070 | ptr += 6; | |
2071 | while (*ptr && *ptr != ';') | |
2072 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
2073 | } | |
2074 | else | |
2075 | lose = 1; | |
2076 | ||
2077 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
2078 | { | |
2079 | ptr += 5; | |
2080 | while (*ptr && *ptr != ';') | |
2081 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 2082 | |
31d99776 DJ |
2083 | if (bss_addr != data_addr) |
2084 | warning (_("Target reported unsupported offsets: %s"), buf); | |
2085 | } | |
2086 | else | |
2087 | lose = 1; | |
2088 | } | |
2089 | else if (strncmp (ptr, "TextSeg=", 8) == 0) | |
c906108c | 2090 | { |
31d99776 DJ |
2091 | ptr += 8; |
2092 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 2093 | while (*ptr && *ptr != ';') |
31d99776 DJ |
2094 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
2095 | num_segments = 1; | |
2096 | ||
2097 | if (strncmp (ptr, ";DataSeg=", 9) == 0) | |
2098 | { | |
2099 | ptr += 9; | |
2100 | while (*ptr && *ptr != ';') | |
2101 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
2102 | num_segments++; | |
2103 | } | |
c906108c SS |
2104 | } |
2105 | else | |
2106 | lose = 1; | |
2107 | ||
2108 | if (lose) | |
8a3fe4f8 | 2109 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
2110 | else if (*ptr != '\0') |
2111 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 2112 | |
802188a7 | 2113 | offs = ((struct section_offsets *) |
a39a16c4 | 2114 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 2115 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 2116 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 2117 | |
31d99776 DJ |
2118 | data = get_symfile_segment_data (symfile_objfile->obfd); |
2119 | do_segments = (data != NULL); | |
2120 | do_sections = num_segments == 0; | |
c906108c | 2121 | |
28c32713 | 2122 | if (num_segments > 0) |
31d99776 | 2123 | { |
31d99776 DJ |
2124 | segments[0] = text_addr; |
2125 | segments[1] = data_addr; | |
2126 | } | |
28c32713 JB |
2127 | /* If we have two segments, we can still try to relocate everything |
2128 | by assuming that the .text and .data offsets apply to the whole | |
2129 | text and data segments. Convert the offsets given in the packet | |
2130 | to base addresses for symfile_map_offsets_to_segments. */ | |
2131 | else if (data && data->num_segments == 2) | |
2132 | { | |
2133 | segments[0] = data->segment_bases[0] + text_addr; | |
2134 | segments[1] = data->segment_bases[1] + data_addr; | |
2135 | num_segments = 2; | |
2136 | } | |
8d385431 DJ |
2137 | /* If the object file has only one segment, assume that it is text |
2138 | rather than data; main programs with no writable data are rare, | |
2139 | but programs with no code are useless. Of course the code might | |
2140 | have ended up in the data segment... to detect that we would need | |
2141 | the permissions here. */ | |
2142 | else if (data && data->num_segments == 1) | |
2143 | { | |
2144 | segments[0] = data->segment_bases[0] + text_addr; | |
2145 | num_segments = 1; | |
2146 | } | |
28c32713 JB |
2147 | /* There's no way to relocate by segment. */ |
2148 | else | |
2149 | do_segments = 0; | |
31d99776 DJ |
2150 | |
2151 | if (do_segments) | |
2152 | { | |
2153 | int ret = symfile_map_offsets_to_segments (symfile_objfile->obfd, data, | |
2154 | offs, num_segments, segments); | |
2155 | ||
2156 | if (ret == 0 && !do_sections) | |
2157 | error (_("Can not handle qOffsets TextSeg response with this symbol file")); | |
2158 | ||
2159 | if (ret > 0) | |
2160 | do_sections = 0; | |
2161 | } | |
c906108c | 2162 | |
9ef895d6 DJ |
2163 | if (data) |
2164 | free_symfile_segment_data (data); | |
31d99776 DJ |
2165 | |
2166 | if (do_sections) | |
2167 | { | |
2168 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; | |
2169 | ||
2170 | /* This is a temporary kludge to force data and bss to use the same offsets | |
2171 | because that's what nlmconv does now. The real solution requires changes | |
2172 | to the stub and remote.c that I don't have time to do right now. */ | |
2173 | ||
2174 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; | |
2175 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
2176 | } | |
c906108c SS |
2177 | |
2178 | objfile_relocate (symfile_objfile, offs); | |
2179 | } | |
2180 | ||
8621d6a9 | 2181 | /* Stub for catch_exception. */ |
0f71a2f6 | 2182 | |
2d717e4f DJ |
2183 | struct start_remote_args |
2184 | { | |
2185 | int from_tty; | |
2186 | ||
2187 | /* The current target. */ | |
2188 | struct target_ops *target; | |
2189 | ||
2190 | /* Non-zero if this is an extended-remote target. */ | |
2191 | int extended_p; | |
2192 | }; | |
2193 | ||
9cbc821d | 2194 | static void |
2d717e4f | 2195 | remote_start_remote (struct ui_out *uiout, void *opaque) |
c906108c | 2196 | { |
2d717e4f DJ |
2197 | struct remote_state *rs = get_remote_state (); |
2198 | struct start_remote_args *args = opaque; | |
2199 | char *wait_status = NULL; | |
8621d6a9 | 2200 | |
23860348 | 2201 | immediate_quit++; /* Allow user to interrupt it. */ |
c906108c SS |
2202 | |
2203 | /* Ack any packet which the remote side has already sent. */ | |
2cd58942 | 2204 | serial_write (remote_desc, "+", 1); |
c906108c | 2205 | |
2d717e4f DJ |
2206 | /* Check whether the target is running now. */ |
2207 | putpkt ("?"); | |
2208 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2209 | ||
2210 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') | |
2211 | { | |
2212 | if (args->extended_p) | |
2213 | { | |
2214 | /* We're connected, but not running. Drop out before we | |
2215 | call start_remote. */ | |
2216 | target_mark_exited (args->target); | |
2217 | return; | |
2218 | } | |
2219 | else | |
2220 | error (_("The target is not running (try extended-remote?)")); | |
2221 | } | |
2222 | else | |
2223 | { | |
2224 | if (args->extended_p) | |
2225 | target_mark_running (args->target); | |
2226 | ||
2227 | /* Save the reply for later. */ | |
2228 | wait_status = alloca (strlen (rs->buf) + 1); | |
2229 | strcpy (wait_status, rs->buf); | |
2230 | } | |
2231 | ||
c906108c SS |
2232 | /* Let the stub know that we want it to return the thread. */ |
2233 | set_thread (-1, 0); | |
2234 | ||
2d717e4f DJ |
2235 | /* Without this, some commands which require an active target |
2236 | (such as kill) won't work. This variable serves (at least) | |
2237 | double duty as both the pid of the target process (if it has | |
2238 | such), and as a flag indicating that a target is active. | |
2239 | These functions should be split out into seperate variables, | |
2240 | especially since GDB will someday have a notion of debugging | |
2241 | several processes. */ | |
2242 | inferior_ptid = pid_to_ptid (MAGIC_NULL_PID); | |
2243 | ||
2244 | /* Now, if we have thread information, update inferior_ptid. */ | |
39f77062 | 2245 | inferior_ptid = remote_current_thread (inferior_ptid); |
c906108c | 2246 | |
23860348 | 2247 | get_offsets (); /* Get text, data & bss offsets. */ |
c906108c | 2248 | |
2d717e4f DJ |
2249 | /* Use the previously fetched status. */ |
2250 | gdb_assert (wait_status != NULL); | |
2251 | strcpy (rs->buf, wait_status); | |
2252 | rs->cached_wait_status = 1; | |
c906108c | 2253 | |
2d717e4f DJ |
2254 | immediate_quit--; |
2255 | start_remote (args->from_tty); /* Initialize gdb process mechanisms. */ | |
c906108c SS |
2256 | } |
2257 | ||
2258 | /* Open a connection to a remote debugger. | |
2259 | NAME is the filename used for communication. */ | |
2260 | ||
2261 | static void | |
fba45db2 | 2262 | remote_open (char *name, int from_tty) |
c906108c | 2263 | { |
92d1e331 | 2264 | remote_open_1 (name, from_tty, &remote_ops, 0, 0); |
c906108c SS |
2265 | } |
2266 | ||
23860348 | 2267 | /* Just like remote_open, but with asynchronous support. */ |
43ff13b4 | 2268 | static void |
fba45db2 | 2269 | remote_async_open (char *name, int from_tty) |
43ff13b4 | 2270 | { |
92d1e331 | 2271 | remote_open_1 (name, from_tty, &remote_async_ops, 0, 1); |
43ff13b4 JM |
2272 | } |
2273 | ||
c906108c SS |
2274 | /* Open a connection to a remote debugger using the extended |
2275 | remote gdb protocol. NAME is the filename used for communication. */ | |
2276 | ||
2277 | static void | |
fba45db2 | 2278 | extended_remote_open (char *name, int from_tty) |
c906108c | 2279 | { |
92d1e331 DJ |
2280 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */, |
2281 | 0 /* async_p */); | |
c906108c SS |
2282 | } |
2283 | ||
23860348 | 2284 | /* Just like extended_remote_open, but with asynchronous support. */ |
43ff13b4 | 2285 | static void |
fba45db2 | 2286 | extended_remote_async_open (char *name, int from_tty) |
43ff13b4 | 2287 | { |
92d1e331 DJ |
2288 | remote_open_1 (name, from_tty, &extended_async_remote_ops, |
2289 | 1 /*extended_p */, 1 /* async_p */); | |
43ff13b4 JM |
2290 | } |
2291 | ||
c906108c SS |
2292 | /* Generic code for opening a connection to a remote target. */ |
2293 | ||
d471ea57 AC |
2294 | static void |
2295 | init_all_packet_configs (void) | |
2296 | { | |
2297 | int i; | |
444abaca DJ |
2298 | for (i = 0; i < PACKET_MAX; i++) |
2299 | update_packet_config (&remote_protocol_packets[i]); | |
d471ea57 AC |
2300 | } |
2301 | ||
23860348 | 2302 | /* Symbol look-up. */ |
dc8acb97 MS |
2303 | |
2304 | static void | |
2305 | remote_check_symbols (struct objfile *objfile) | |
2306 | { | |
d01949b6 | 2307 | struct remote_state *rs = get_remote_state (); |
dc8acb97 MS |
2308 | char *msg, *reply, *tmp; |
2309 | struct minimal_symbol *sym; | |
2310 | int end; | |
2311 | ||
444abaca | 2312 | if (remote_protocol_packets[PACKET_qSymbol].support == PACKET_DISABLE) |
dc8acb97 MS |
2313 | return; |
2314 | ||
6d820c5c DJ |
2315 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
2316 | because we need both at the same time. */ | |
ea9c271d | 2317 | msg = alloca (get_remote_packet_size ()); |
6d820c5c | 2318 | |
23860348 | 2319 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
2320 | |
2321 | putpkt ("qSymbol::"); | |
6d820c5c DJ |
2322 | getpkt (&rs->buf, &rs->buf_size, 0); |
2323 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSymbol]); | |
2e9f7625 | 2324 | reply = rs->buf; |
dc8acb97 MS |
2325 | |
2326 | while (strncmp (reply, "qSymbol:", 8) == 0) | |
2327 | { | |
2328 | tmp = &reply[8]; | |
cfd77fa1 | 2329 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
2330 | msg[end] = '\0'; |
2331 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
2332 | if (sym == NULL) | |
ea9c271d | 2333 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
dc8acb97 | 2334 | else |
2bbe3cc1 DJ |
2335 | { |
2336 | CORE_ADDR sym_addr = SYMBOL_VALUE_ADDRESS (sym); | |
2337 | ||
2338 | /* If this is a function address, return the start of code | |
2339 | instead of any data function descriptor. */ | |
2340 | sym_addr = gdbarch_convert_from_func_ptr_addr (current_gdbarch, | |
2341 | sym_addr, | |
2342 | ¤t_target); | |
2343 | ||
2344 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", | |
2345 | paddr_nz (sym_addr), &reply[8]); | |
2346 | } | |
2347 | ||
dc8acb97 | 2348 | putpkt (msg); |
6d820c5c | 2349 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2350 | reply = rs->buf; |
dc8acb97 MS |
2351 | } |
2352 | } | |
2353 | ||
9db8d71f DJ |
2354 | static struct serial * |
2355 | remote_serial_open (char *name) | |
2356 | { | |
2357 | static int udp_warning = 0; | |
2358 | ||
2359 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
2360 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
2361 | serial connection is reliable and not the serial connection promising | |
2362 | to be. */ | |
2363 | if (!udp_warning && strncmp (name, "udp:", 4) == 0) | |
2364 | { | |
8a3fe4f8 AC |
2365 | warning (_("\ |
2366 | The remote protocol may be unreliable over UDP.\n\ | |
2367 | Some events may be lost, rendering further debugging impossible.")); | |
9db8d71f DJ |
2368 | udp_warning = 1; |
2369 | } | |
2370 | ||
2371 | return serial_open (name); | |
2372 | } | |
2373 | ||
be2a5f71 DJ |
2374 | /* This type describes each known response to the qSupported |
2375 | packet. */ | |
2376 | struct protocol_feature | |
2377 | { | |
2378 | /* The name of this protocol feature. */ | |
2379 | const char *name; | |
2380 | ||
2381 | /* The default for this protocol feature. */ | |
2382 | enum packet_support default_support; | |
2383 | ||
2384 | /* The function to call when this feature is reported, or after | |
2385 | qSupported processing if the feature is not supported. | |
2386 | The first argument points to this structure. The second | |
2387 | argument indicates whether the packet requested support be | |
2388 | enabled, disabled, or probed (or the default, if this function | |
2389 | is being called at the end of processing and this feature was | |
2390 | not reported). The third argument may be NULL; if not NULL, it | |
2391 | is a NUL-terminated string taken from the packet following | |
2392 | this feature's name and an equals sign. */ | |
2393 | void (*func) (const struct protocol_feature *, enum packet_support, | |
2394 | const char *); | |
2395 | ||
2396 | /* The corresponding packet for this feature. Only used if | |
2397 | FUNC is remote_supported_packet. */ | |
2398 | int packet; | |
2399 | }; | |
2400 | ||
be2a5f71 DJ |
2401 | static void |
2402 | remote_supported_packet (const struct protocol_feature *feature, | |
2403 | enum packet_support support, | |
2404 | const char *argument) | |
2405 | { | |
2406 | if (argument) | |
2407 | { | |
2408 | warning (_("Remote qSupported response supplied an unexpected value for" | |
2409 | " \"%s\"."), feature->name); | |
2410 | return; | |
2411 | } | |
2412 | ||
2413 | if (remote_protocol_packets[feature->packet].support | |
2414 | == PACKET_SUPPORT_UNKNOWN) | |
2415 | remote_protocol_packets[feature->packet].support = support; | |
2416 | } | |
be2a5f71 DJ |
2417 | |
2418 | static void | |
2419 | remote_packet_size (const struct protocol_feature *feature, | |
2420 | enum packet_support support, const char *value) | |
2421 | { | |
2422 | struct remote_state *rs = get_remote_state (); | |
2423 | ||
2424 | int packet_size; | |
2425 | char *value_end; | |
2426 | ||
2427 | if (support != PACKET_ENABLE) | |
2428 | return; | |
2429 | ||
2430 | if (value == NULL || *value == '\0') | |
2431 | { | |
2432 | warning (_("Remote target reported \"%s\" without a size."), | |
2433 | feature->name); | |
2434 | return; | |
2435 | } | |
2436 | ||
2437 | errno = 0; | |
2438 | packet_size = strtol (value, &value_end, 16); | |
2439 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
2440 | { | |
2441 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
2442 | feature->name, value); | |
2443 | return; | |
2444 | } | |
2445 | ||
2446 | if (packet_size > MAX_REMOTE_PACKET_SIZE) | |
2447 | { | |
2448 | warning (_("limiting remote suggested packet size (%d bytes) to %d"), | |
2449 | packet_size, MAX_REMOTE_PACKET_SIZE); | |
2450 | packet_size = MAX_REMOTE_PACKET_SIZE; | |
2451 | } | |
2452 | ||
2453 | /* Record the new maximum packet size. */ | |
2454 | rs->explicit_packet_size = packet_size; | |
2455 | } | |
2456 | ||
2457 | static struct protocol_feature remote_protocol_features[] = { | |
0876f84a | 2458 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 2459 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 2460 | PACKET_qXfer_auxv }, |
23181151 DJ |
2461 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
2462 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
2463 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
2464 | PACKET_qXfer_libraries }, | |
fd79ecee | 2465 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 2466 | PACKET_qXfer_memory_map }, |
4de6483e UW |
2467 | { "qXfer:spu:read", PACKET_DISABLE, remote_supported_packet, |
2468 | PACKET_qXfer_spu_read }, | |
2469 | { "qXfer:spu:write", PACKET_DISABLE, remote_supported_packet, | |
2470 | PACKET_qXfer_spu_write }, | |
89be2091 DJ |
2471 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
2472 | PACKET_QPassSignals }, | |
be2a5f71 DJ |
2473 | }; |
2474 | ||
2475 | static void | |
2476 | remote_query_supported (void) | |
2477 | { | |
2478 | struct remote_state *rs = get_remote_state (); | |
2479 | char *next; | |
2480 | int i; | |
2481 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
2482 | ||
2483 | /* The packet support flags are handled differently for this packet | |
2484 | than for most others. We treat an error, a disabled packet, and | |
2485 | an empty response identically: any features which must be reported | |
2486 | to be used will be automatically disabled. An empty buffer | |
2487 | accomplishes this, since that is also the representation for a list | |
2488 | containing no features. */ | |
2489 | ||
2490 | rs->buf[0] = 0; | |
2491 | if (remote_protocol_packets[PACKET_qSupported].support != PACKET_DISABLE) | |
2492 | { | |
2493 | putpkt ("qSupported"); | |
2494 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2495 | ||
2496 | /* If an error occured, warn, but do not return - just reset the | |
2497 | buffer to empty and go on to disable features. */ | |
2498 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
2499 | == PACKET_ERROR) | |
2500 | { | |
2501 | warning (_("Remote failure reply: %s"), rs->buf); | |
2502 | rs->buf[0] = 0; | |
2503 | } | |
2504 | } | |
2505 | ||
2506 | memset (seen, 0, sizeof (seen)); | |
2507 | ||
2508 | next = rs->buf; | |
2509 | while (*next) | |
2510 | { | |
2511 | enum packet_support is_supported; | |
2512 | char *p, *end, *name_end, *value; | |
2513 | ||
2514 | /* First separate out this item from the rest of the packet. If | |
2515 | there's another item after this, we overwrite the separator | |
2516 | (terminated strings are much easier to work with). */ | |
2517 | p = next; | |
2518 | end = strchr (p, ';'); | |
2519 | if (end == NULL) | |
2520 | { | |
2521 | end = p + strlen (p); | |
2522 | next = end; | |
2523 | } | |
2524 | else | |
2525 | { | |
89be2091 DJ |
2526 | *end = '\0'; |
2527 | next = end + 1; | |
2528 | ||
be2a5f71 DJ |
2529 | if (end == p) |
2530 | { | |
2531 | warning (_("empty item in \"qSupported\" response")); | |
2532 | continue; | |
2533 | } | |
be2a5f71 DJ |
2534 | } |
2535 | ||
2536 | name_end = strchr (p, '='); | |
2537 | if (name_end) | |
2538 | { | |
2539 | /* This is a name=value entry. */ | |
2540 | is_supported = PACKET_ENABLE; | |
2541 | value = name_end + 1; | |
2542 | *name_end = '\0'; | |
2543 | } | |
2544 | else | |
2545 | { | |
2546 | value = NULL; | |
2547 | switch (end[-1]) | |
2548 | { | |
2549 | case '+': | |
2550 | is_supported = PACKET_ENABLE; | |
2551 | break; | |
2552 | ||
2553 | case '-': | |
2554 | is_supported = PACKET_DISABLE; | |
2555 | break; | |
2556 | ||
2557 | case '?': | |
2558 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
2559 | break; | |
2560 | ||
2561 | default: | |
2562 | warning (_("unrecognized item \"%s\" in \"qSupported\" response"), p); | |
2563 | continue; | |
2564 | } | |
2565 | end[-1] = '\0'; | |
2566 | } | |
2567 | ||
2568 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
2569 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
2570 | { | |
2571 | const struct protocol_feature *feature; | |
2572 | ||
2573 | seen[i] = 1; | |
2574 | feature = &remote_protocol_features[i]; | |
2575 | feature->func (feature, is_supported, value); | |
2576 | break; | |
2577 | } | |
2578 | } | |
2579 | ||
2580 | /* If we increased the packet size, make sure to increase the global | |
2581 | buffer size also. We delay this until after parsing the entire | |
2582 | qSupported packet, because this is the same buffer we were | |
2583 | parsing. */ | |
2584 | if (rs->buf_size < rs->explicit_packet_size) | |
2585 | { | |
2586 | rs->buf_size = rs->explicit_packet_size; | |
2587 | rs->buf = xrealloc (rs->buf, rs->buf_size); | |
2588 | } | |
2589 | ||
2590 | /* Handle the defaults for unmentioned features. */ | |
2591 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
2592 | if (!seen[i]) | |
2593 | { | |
2594 | const struct protocol_feature *feature; | |
2595 | ||
2596 | feature = &remote_protocol_features[i]; | |
2597 | feature->func (feature, feature->default_support, NULL); | |
2598 | } | |
2599 | } | |
2600 | ||
2601 | ||
c906108c | 2602 | static void |
fba45db2 | 2603 | remote_open_1 (char *name, int from_tty, struct target_ops *target, |
92d1e331 | 2604 | int extended_p, int async_p) |
c906108c | 2605 | { |
d01949b6 | 2606 | struct remote_state *rs = get_remote_state (); |
c906108c | 2607 | if (name == 0) |
8a3fe4f8 | 2608 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 2609 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 2610 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 2611 | |
23860348 | 2612 | /* See FIXME above. */ |
92d1e331 DJ |
2613 | if (!async_p) |
2614 | wait_forever_enabled_p = 1; | |
6426a772 | 2615 | |
2d717e4f DJ |
2616 | /* If we're connected to a running target, target_preopen will kill it. |
2617 | But if we're connected to a target system with no running process, | |
2618 | then we will still be connected when it returns. Ask this question | |
2619 | first, before target_preopen has a chance to kill anything. */ | |
2620 | if (remote_desc != NULL && !target_has_execution) | |
2621 | { | |
2622 | if (!from_tty | |
2623 | || query (_("Already connected to a remote target. Disconnect? "))) | |
2624 | pop_target (); | |
2625 | else | |
2626 | error (_("Still connected.")); | |
2627 | } | |
2628 | ||
c906108c SS |
2629 | target_preopen (from_tty); |
2630 | ||
2631 | unpush_target (target); | |
2632 | ||
2d717e4f DJ |
2633 | /* This time without a query. If we were connected to an |
2634 | extended-remote target and target_preopen killed the running | |
2635 | process, we may still be connected. If we are starting "target | |
2636 | remote" now, the extended-remote target will not have been | |
2637 | removed by unpush_target. */ | |
2638 | if (remote_desc != NULL && !target_has_execution) | |
2639 | pop_target (); | |
2640 | ||
89be2091 DJ |
2641 | /* Make sure we send the passed signals list the next time we resume. */ |
2642 | xfree (last_pass_packet); | |
2643 | last_pass_packet = NULL; | |
2644 | ||
ad9a8f3f | 2645 | remote_fileio_reset (); |
1dd41f16 NS |
2646 | reopen_exec_file (); |
2647 | reread_symbols (); | |
2648 | ||
9db8d71f | 2649 | remote_desc = remote_serial_open (name); |
c906108c SS |
2650 | if (!remote_desc) |
2651 | perror_with_name (name); | |
2652 | ||
2653 | if (baud_rate != -1) | |
2654 | { | |
2cd58942 | 2655 | if (serial_setbaudrate (remote_desc, baud_rate)) |
c906108c | 2656 | { |
9b74d5d3 KB |
2657 | /* The requested speed could not be set. Error out to |
2658 | top level after closing remote_desc. Take care to | |
2659 | set remote_desc to NULL to avoid closing remote_desc | |
2660 | more than once. */ | |
2cd58942 | 2661 | serial_close (remote_desc); |
9b74d5d3 | 2662 | remote_desc = NULL; |
c906108c SS |
2663 | perror_with_name (name); |
2664 | } | |
2665 | } | |
2666 | ||
2cd58942 | 2667 | serial_raw (remote_desc); |
c906108c SS |
2668 | |
2669 | /* If there is something sitting in the buffer we might take it as a | |
2670 | response to a command, which would be bad. */ | |
2cd58942 | 2671 | serial_flush_input (remote_desc); |
c906108c SS |
2672 | |
2673 | if (from_tty) | |
2674 | { | |
2675 | puts_filtered ("Remote debugging using "); | |
2676 | puts_filtered (name); | |
2677 | puts_filtered ("\n"); | |
2678 | } | |
23860348 | 2679 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 2680 | |
2d717e4f DJ |
2681 | /* Assume that the target is running, unless we learn otherwise. */ |
2682 | target_mark_running (target); | |
2683 | ||
be2a5f71 DJ |
2684 | /* Reset the target state; these things will be queried either by |
2685 | remote_query_supported or as they are needed. */ | |
d471ea57 | 2686 | init_all_packet_configs (); |
be2a5f71 | 2687 | rs->explicit_packet_size = 0; |
802188a7 | 2688 | |
c5aa993b | 2689 | general_thread = -2; |
cce74817 | 2690 | continue_thread = -2; |
c906108c | 2691 | |
9d1f7ab2 MS |
2692 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
2693 | use_threadinfo_query = 1; | |
2694 | use_threadextra_query = 1; | |
2695 | ||
be2a5f71 DJ |
2696 | /* The first packet we send to the target is the optional "supported |
2697 | packets" request. If the target can answer this, it will tell us | |
2698 | which later probes to skip. */ | |
2699 | remote_query_supported (); | |
2700 | ||
424163ea DJ |
2701 | /* Next, if the target can specify a description, read it. We do |
2702 | this before anything involving memory or registers. */ | |
2703 | target_find_description (); | |
2704 | ||
92d1e331 DJ |
2705 | if (async_p) |
2706 | { | |
23860348 | 2707 | /* With this target we start out by owning the terminal. */ |
92d1e331 DJ |
2708 | remote_async_terminal_ours_p = 1; |
2709 | ||
2710 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
2711 | assumed that the target is already ready and able to respond to | |
2712 | requests. Unfortunately remote_start_remote() eventually calls | |
2713 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets | |
2714 | around this. Eventually a mechanism that allows | |
2715 | wait_for_inferior() to expect/get timeouts will be | |
23860348 | 2716 | implemented. */ |
92d1e331 DJ |
2717 | wait_forever_enabled_p = 0; |
2718 | } | |
2719 | ||
23860348 | 2720 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 2721 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 2722 | |
36918e70 | 2723 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
2724 | target (we'd otherwise be in an inconsistent state) and then |
2725 | propogate the error on up the exception chain. This ensures that | |
2726 | the caller doesn't stumble along blindly assuming that the | |
2727 | function succeeded. The CLI doesn't have this problem but other | |
2728 | UI's, such as MI do. | |
36918e70 AC |
2729 | |
2730 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
2731 | this function should return an error indication letting the | |
ce2826aa | 2732 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
2733 | ``target remote'' is directly wired to this function making that |
2734 | impossible. On a positive note, the CLI side of this problem has | |
2735 | been fixed - the function set_cmd_context() makes it possible for | |
2736 | all the ``target ....'' commands to share a common callback | |
2737 | function. See cli-dump.c. */ | |
109c3e39 | 2738 | { |
2d717e4f DJ |
2739 | struct gdb_exception ex; |
2740 | struct start_remote_args args; | |
2741 | ||
2742 | args.from_tty = from_tty; | |
2743 | args.target = target; | |
2744 | args.extended_p = extended_p; | |
2745 | ||
2746 | ex = catch_exception (uiout, remote_start_remote, &args, RETURN_MASK_ALL); | |
109c3e39 AC |
2747 | if (ex.reason < 0) |
2748 | { | |
2749 | pop_target (); | |
2750 | if (async_p) | |
2751 | wait_forever_enabled_p = 1; | |
2752 | throw_exception (ex); | |
2753 | } | |
2754 | } | |
c906108c | 2755 | |
92d1e331 DJ |
2756 | if (async_p) |
2757 | wait_forever_enabled_p = 1; | |
6426a772 JM |
2758 | |
2759 | if (extended_p) | |
43ff13b4 | 2760 | { |
6240bebf | 2761 | /* Tell the remote that we are using the extended protocol. */ |
6426a772 | 2762 | putpkt ("!"); |
6d820c5c | 2763 | getpkt (&rs->buf, &rs->buf_size, 0); |
43ff13b4 | 2764 | } |
a77053c2 | 2765 | |
2d717e4f DJ |
2766 | /* If we connected to a live target, do some additional setup. */ |
2767 | if (target_has_execution) | |
2768 | { | |
2769 | if (exec_bfd) /* No use without an exec file. */ | |
2770 | remote_check_symbols (symfile_objfile); | |
2771 | } | |
43ff13b4 JM |
2772 | } |
2773 | ||
c906108c SS |
2774 | /* This takes a program previously attached to and detaches it. After |
2775 | this is done, GDB can be used to debug some other program. We | |
2776 | better not have left any breakpoints in the target program or it'll | |
2777 | die when it hits one. */ | |
2778 | ||
2779 | static void | |
2d717e4f | 2780 | remote_detach_1 (char *args, int from_tty, int extended) |
c906108c | 2781 | { |
d01949b6 | 2782 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2783 | |
2784 | if (args) | |
8a3fe4f8 | 2785 | error (_("Argument given to \"detach\" when remotely debugging.")); |
c906108c | 2786 | |
2d717e4f DJ |
2787 | if (!target_has_execution) |
2788 | error (_("No process to detach from.")); | |
2789 | ||
c906108c | 2790 | /* Tell the remote target to detach. */ |
6d820c5c | 2791 | strcpy (rs->buf, "D"); |
4ddda9b5 PA |
2792 | putpkt (rs->buf); |
2793 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2794 | ||
2795 | if (rs->buf[0] == 'E') | |
2796 | error (_("Can't detach process.")); | |
c906108c | 2797 | |
23860348 | 2798 | /* Unregister the file descriptor from the event loop. */ |
6ad8ae5c DJ |
2799 | if (target_is_async_p ()) |
2800 | serial_async (remote_desc, NULL, 0); | |
2801 | ||
cca728d0 | 2802 | target_mourn_inferior (); |
c906108c | 2803 | if (from_tty) |
2d717e4f DJ |
2804 | { |
2805 | if (extended) | |
2806 | puts_filtered ("Detached from remote process.\n"); | |
2807 | else | |
2808 | puts_filtered ("Ending remote debugging.\n"); | |
2809 | } | |
2810 | } | |
2811 | ||
2812 | static void | |
2813 | remote_detach (char *args, int from_tty) | |
2814 | { | |
2815 | remote_detach_1 (args, from_tty, 0); | |
2816 | } | |
2817 | ||
2818 | static void | |
2819 | extended_remote_detach (char *args, int from_tty) | |
2820 | { | |
2821 | remote_detach_1 (args, from_tty, 1); | |
c906108c SS |
2822 | } |
2823 | ||
6ad8ae5c DJ |
2824 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
2825 | ||
43ff13b4 | 2826 | static void |
597320e7 | 2827 | remote_disconnect (struct target_ops *target, char *args, int from_tty) |
43ff13b4 | 2828 | { |
43ff13b4 | 2829 | if (args) |
2d717e4f | 2830 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 2831 | |
23860348 | 2832 | /* Unregister the file descriptor from the event loop. */ |
ed9a39eb | 2833 | if (target_is_async_p ()) |
2cd58942 | 2834 | serial_async (remote_desc, NULL, 0); |
43ff13b4 | 2835 | |
2d717e4f DJ |
2836 | /* Make sure we unpush even the extended remote targets; mourn |
2837 | won't do it. So call remote_mourn_1 directly instead of | |
2838 | target_mourn_inferior. */ | |
2839 | remote_mourn_1 (target); | |
2840 | ||
43ff13b4 JM |
2841 | if (from_tty) |
2842 | puts_filtered ("Ending remote debugging.\n"); | |
2843 | } | |
2844 | ||
2d717e4f DJ |
2845 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
2846 | be chatty about it. */ | |
2847 | ||
2848 | static void | |
2849 | extended_remote_attach_1 (struct target_ops *target, char *args, int from_tty) | |
2850 | { | |
2851 | struct remote_state *rs = get_remote_state (); | |
be86555c | 2852 | int pid; |
2d717e4f | 2853 | char *dummy; |
96ef3384 | 2854 | char *wait_status = NULL; |
2d717e4f DJ |
2855 | |
2856 | if (!args) | |
2857 | error_no_arg (_("process-id to attach")); | |
2858 | ||
2859 | dummy = args; | |
2860 | pid = strtol (args, &dummy, 0); | |
2861 | /* Some targets don't set errno on errors, grrr! */ | |
2862 | if (pid == 0 && args == dummy) | |
2863 | error (_("Illegal process-id: %s."), args); | |
2864 | ||
2865 | if (remote_protocol_packets[PACKET_vAttach].support == PACKET_DISABLE) | |
2866 | error (_("This target does not support attaching to a process")); | |
2867 | ||
2868 | sprintf (rs->buf, "vAttach;%x", pid); | |
2869 | putpkt (rs->buf); | |
2870 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2871 | ||
2872 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vAttach]) == PACKET_OK) | |
2873 | { | |
2874 | if (from_tty) | |
2875 | printf_unfiltered (_("Attached to %s\n"), | |
2876 | target_pid_to_str (pid_to_ptid (pid))); | |
2877 | ||
96ef3384 UW |
2878 | /* Save the reply for later. */ |
2879 | wait_status = alloca (strlen (rs->buf) + 1); | |
2880 | strcpy (wait_status, rs->buf); | |
2d717e4f DJ |
2881 | } |
2882 | else if (remote_protocol_packets[PACKET_vAttach].support == PACKET_DISABLE) | |
2883 | error (_("This target does not support attaching to a process")); | |
2884 | else | |
2885 | error (_("Attaching to %s failed"), | |
2886 | target_pid_to_str (pid_to_ptid (pid))); | |
2887 | ||
2888 | target_mark_running (target); | |
2889 | inferior_ptid = pid_to_ptid (pid); | |
df7df359 | 2890 | attach_flag = 1; |
96ef3384 UW |
2891 | |
2892 | /* Next, if the target can specify a description, read it. We do | |
2893 | this before anything involving memory or registers. */ | |
2894 | target_find_description (); | |
2895 | ||
2896 | /* Use the previously fetched status. */ | |
2897 | gdb_assert (wait_status != NULL); | |
2898 | strcpy (rs->buf, wait_status); | |
2899 | rs->cached_wait_status = 1; | |
2d717e4f DJ |
2900 | } |
2901 | ||
2902 | static void | |
2903 | extended_remote_attach (char *args, int from_tty) | |
2904 | { | |
2905 | extended_remote_attach_1 (&extended_remote_ops, args, from_tty); | |
2906 | } | |
2907 | ||
2908 | static void | |
2909 | extended_async_remote_attach (char *args, int from_tty) | |
2910 | { | |
2911 | extended_remote_attach_1 (&extended_async_remote_ops, args, from_tty); | |
2912 | } | |
2913 | ||
c906108c SS |
2914 | /* Convert hex digit A to a number. */ |
2915 | ||
30559e10 | 2916 | static int |
fba45db2 | 2917 | fromhex (int a) |
c906108c SS |
2918 | { |
2919 | if (a >= '0' && a <= '9') | |
2920 | return a - '0'; | |
2921 | else if (a >= 'a' && a <= 'f') | |
2922 | return a - 'a' + 10; | |
2923 | else if (a >= 'A' && a <= 'F') | |
2924 | return a - 'A' + 10; | |
c5aa993b | 2925 | else |
8a3fe4f8 | 2926 | error (_("Reply contains invalid hex digit %d"), a); |
c906108c SS |
2927 | } |
2928 | ||
30559e10 | 2929 | static int |
cfd77fa1 | 2930 | hex2bin (const char *hex, gdb_byte *bin, int count) |
30559e10 MS |
2931 | { |
2932 | int i; | |
2933 | ||
30559e10 MS |
2934 | for (i = 0; i < count; i++) |
2935 | { | |
2936 | if (hex[0] == 0 || hex[1] == 0) | |
2937 | { | |
2938 | /* Hex string is short, or of uneven length. | |
23860348 | 2939 | Return the count that has been converted so far. */ |
30559e10 MS |
2940 | return i; |
2941 | } | |
2942 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); | |
2943 | hex += 2; | |
2944 | } | |
2945 | return i; | |
2946 | } | |
2947 | ||
c906108c SS |
2948 | /* Convert number NIB to a hex digit. */ |
2949 | ||
2950 | static int | |
fba45db2 | 2951 | tohex (int nib) |
c906108c SS |
2952 | { |
2953 | if (nib < 10) | |
c5aa993b | 2954 | return '0' + nib; |
c906108c | 2955 | else |
c5aa993b | 2956 | return 'a' + nib - 10; |
c906108c | 2957 | } |
30559e10 MS |
2958 | |
2959 | static int | |
cfd77fa1 | 2960 | bin2hex (const gdb_byte *bin, char *hex, int count) |
30559e10 MS |
2961 | { |
2962 | int i; | |
23860348 | 2963 | /* May use a length, or a nul-terminated string as input. */ |
30559e10 | 2964 | if (count == 0) |
cfd77fa1 | 2965 | count = strlen ((char *) bin); |
30559e10 MS |
2966 | |
2967 | for (i = 0; i < count; i++) | |
2968 | { | |
2969 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
2970 | *hex++ = tohex (*bin++ & 0xf); | |
2971 | } | |
2972 | *hex = 0; | |
2973 | return i; | |
2974 | } | |
c906108c | 2975 | \f |
506fb367 DJ |
2976 | /* Check for the availability of vCont. This function should also check |
2977 | the response. */ | |
c906108c SS |
2978 | |
2979 | static void | |
6d820c5c | 2980 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 2981 | { |
2e9f7625 | 2982 | char *buf; |
6d820c5c | 2983 | |
2e9f7625 DJ |
2984 | strcpy (rs->buf, "vCont?"); |
2985 | putpkt (rs->buf); | |
6d820c5c | 2986 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2987 | buf = rs->buf; |
c906108c | 2988 | |
506fb367 DJ |
2989 | /* Make sure that the features we assume are supported. */ |
2990 | if (strncmp (buf, "vCont", 5) == 0) | |
2991 | { | |
2992 | char *p = &buf[5]; | |
2993 | int support_s, support_S, support_c, support_C; | |
2994 | ||
2995 | support_s = 0; | |
2996 | support_S = 0; | |
2997 | support_c = 0; | |
2998 | support_C = 0; | |
2999 | while (p && *p == ';') | |
3000 | { | |
3001 | p++; | |
3002 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
3003 | support_s = 1; | |
3004 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
3005 | support_S = 1; | |
3006 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
3007 | support_c = 1; | |
3008 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
3009 | support_C = 1; | |
3010 | ||
3011 | p = strchr (p, ';'); | |
3012 | } | |
c906108c | 3013 | |
506fb367 DJ |
3014 | /* If s, S, c, and C are not all supported, we can't use vCont. Clearing |
3015 | BUF will make packet_ok disable the packet. */ | |
3016 | if (!support_s || !support_S || !support_c || !support_C) | |
3017 | buf[0] = 0; | |
3018 | } | |
c906108c | 3019 | |
444abaca | 3020 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 3021 | } |
c906108c | 3022 | |
506fb367 DJ |
3023 | /* Resume the remote inferior by using a "vCont" packet. The thread |
3024 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
3025 | resumed thread should be single-stepped and/or signalled. If PTID's | |
3026 | PID is -1, then all threads are resumed; the thread to be stepped and/or | |
3027 | signalled is given in the global INFERIOR_PTID. This function returns | |
3028 | non-zero iff it resumes the inferior. | |
44eaed12 | 3029 | |
506fb367 DJ |
3030 | This function issues a strict subset of all possible vCont commands at the |
3031 | moment. */ | |
44eaed12 | 3032 | |
506fb367 DJ |
3033 | static int |
3034 | remote_vcont_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
3035 | { | |
3036 | struct remote_state *rs = get_remote_state (); | |
3037 | int pid = PIDGET (ptid); | |
2d717e4f | 3038 | char *outbuf; |
506fb367 | 3039 | struct cleanup *old_cleanup; |
44eaed12 | 3040 | |
444abaca | 3041 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 3042 | remote_vcont_probe (rs); |
44eaed12 | 3043 | |
444abaca | 3044 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_DISABLE) |
6d820c5c | 3045 | return 0; |
44eaed12 | 3046 | |
506fb367 DJ |
3047 | /* If we could generate a wider range of packets, we'd have to worry |
3048 | about overflowing BUF. Should there be a generic | |
3049 | "multi-part-packet" packet? */ | |
3050 | ||
3051 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) | |
c906108c | 3052 | { |
506fb367 DJ |
3053 | /* MAGIC_NULL_PTID means that we don't have any active threads, so we |
3054 | don't have any PID numbers the inferior will understand. Make sure | |
3055 | to only send forms that do not specify a PID. */ | |
3056 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d | 3057 | outbuf = xstrprintf ("vCont;S%02x", siggnal); |
506fb367 | 3058 | else if (step) |
2963ee1d | 3059 | outbuf = xstrprintf ("vCont;s"); |
506fb367 | 3060 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d | 3061 | outbuf = xstrprintf ("vCont;C%02x", siggnal); |
506fb367 | 3062 | else |
2963ee1d | 3063 | outbuf = xstrprintf ("vCont;c"); |
506fb367 DJ |
3064 | } |
3065 | else if (pid == -1) | |
3066 | { | |
3067 | /* Resume all threads, with preference for INFERIOR_PTID. */ | |
3068 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d DJ |
3069 | outbuf = xstrprintf ("vCont;S%02x:%x;c", siggnal, |
3070 | PIDGET (inferior_ptid)); | |
506fb367 | 3071 | else if (step) |
2963ee1d | 3072 | outbuf = xstrprintf ("vCont;s:%x;c", PIDGET (inferior_ptid)); |
506fb367 | 3073 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d DJ |
3074 | outbuf = xstrprintf ("vCont;C%02x:%x;c", siggnal, |
3075 | PIDGET (inferior_ptid)); | |
506fb367 | 3076 | else |
2963ee1d | 3077 | outbuf = xstrprintf ("vCont;c"); |
c906108c SS |
3078 | } |
3079 | else | |
506fb367 DJ |
3080 | { |
3081 | /* Scheduler locking; resume only PTID. */ | |
3082 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d | 3083 | outbuf = xstrprintf ("vCont;S%02x:%x", siggnal, pid); |
506fb367 | 3084 | else if (step) |
2963ee1d | 3085 | outbuf = xstrprintf ("vCont;s:%x", pid); |
506fb367 | 3086 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d | 3087 | outbuf = xstrprintf ("vCont;C%02x:%x", siggnal, pid); |
506fb367 | 3088 | else |
2963ee1d | 3089 | outbuf = xstrprintf ("vCont;c:%x", pid); |
506fb367 | 3090 | } |
c906108c | 3091 | |
ea9c271d | 3092 | gdb_assert (outbuf && strlen (outbuf) < get_remote_packet_size ()); |
6d820c5c | 3093 | old_cleanup = make_cleanup (xfree, outbuf); |
2963ee1d DJ |
3094 | |
3095 | putpkt (outbuf); | |
506fb367 DJ |
3096 | |
3097 | do_cleanups (old_cleanup); | |
3098 | ||
3099 | return 1; | |
c906108c | 3100 | } |
43ff13b4 | 3101 | |
506fb367 DJ |
3102 | /* Tell the remote machine to resume. */ |
3103 | ||
3104 | static enum target_signal last_sent_signal = TARGET_SIGNAL_0; | |
3105 | ||
3106 | static int last_sent_step; | |
3107 | ||
43ff13b4 | 3108 | static void |
506fb367 | 3109 | remote_resume (ptid_t ptid, int step, enum target_signal siggnal) |
43ff13b4 | 3110 | { |
d01949b6 | 3111 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 3112 | char *buf; |
39f77062 | 3113 | int pid = PIDGET (ptid); |
43ff13b4 | 3114 | |
43ff13b4 JM |
3115 | last_sent_signal = siggnal; |
3116 | last_sent_step = step; | |
3117 | ||
89be2091 DJ |
3118 | /* Update the inferior on signals to silently pass, if they've changed. */ |
3119 | remote_pass_signals (); | |
3120 | ||
506fb367 DJ |
3121 | /* The vCont packet doesn't need to specify threads via Hc. */ |
3122 | if (remote_vcont_resume (ptid, step, siggnal)) | |
3123 | return; | |
3124 | ||
3125 | /* All other supported resume packets do use Hc, so call set_thread. */ | |
3126 | if (pid == -1) | |
23860348 | 3127 | set_thread (0, 0); /* Run any thread. */ |
506fb367 | 3128 | else |
23860348 | 3129 | set_thread (pid, 0); /* Run this thread. */ |
506fb367 | 3130 | |
2e9f7625 | 3131 | buf = rs->buf; |
43ff13b4 JM |
3132 | if (siggnal != TARGET_SIGNAL_0) |
3133 | { | |
3134 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 3135 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 3136 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
3137 | buf[3] = '\0'; |
3138 | } | |
3139 | else | |
c5aa993b | 3140 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 3141 | |
44eaed12 | 3142 | putpkt (buf); |
506fb367 DJ |
3143 | } |
3144 | ||
23860348 | 3145 | /* Same as remote_resume, but with async support. */ |
506fb367 DJ |
3146 | static void |
3147 | remote_async_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
3148 | { | |
3149 | remote_resume (ptid, step, siggnal); | |
43ff13b4 | 3150 | |
2acceee2 JM |
3151 | /* We are about to start executing the inferior, let's register it |
3152 | with the event loop. NOTE: this is the one place where all the | |
3153 | execution commands end up. We could alternatively do this in each | |
23860348 | 3154 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
3155 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
3156 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 3157 | NOT asynchronously. */ |
362646f5 | 3158 | if (target_can_async_p ()) |
2acceee2 | 3159 | target_async (inferior_event_handler, 0); |
23860348 | 3160 | /* Tell the world that the target is now executing. */ |
2acceee2 JM |
3161 | /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set |
3162 | this? Instead, should the client of target just assume (for | |
3163 | async targets) that the target is going to start executing? Is | |
3164 | this information already found in the continuation block? */ | |
ed9a39eb | 3165 | if (target_is_async_p ()) |
2acceee2 | 3166 | target_executing = 1; |
43ff13b4 | 3167 | } |
c906108c | 3168 | \f |
43ff13b4 JM |
3169 | |
3170 | /* Set up the signal handler for SIGINT, while the target is | |
23860348 | 3171 | executing, ovewriting the 'regular' SIGINT signal handler. */ |
43ff13b4 | 3172 | static void |
fba45db2 | 3173 | initialize_sigint_signal_handler (void) |
43ff13b4 | 3174 | { |
43ff13b4 JM |
3175 | signal (SIGINT, handle_remote_sigint); |
3176 | } | |
3177 | ||
23860348 | 3178 | /* Signal handler for SIGINT, while the target is executing. */ |
43ff13b4 | 3179 | static void |
fba45db2 | 3180 | handle_remote_sigint (int sig) |
43ff13b4 JM |
3181 | { |
3182 | signal (sig, handle_remote_sigint_twice); | |
43ff13b4 JM |
3183 | mark_async_signal_handler_wrapper (sigint_remote_token); |
3184 | } | |
3185 | ||
3186 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
3187 | sent once. It will take effect the second time that the user sends | |
23860348 | 3188 | a ^C. */ |
43ff13b4 | 3189 | static void |
fba45db2 | 3190 | handle_remote_sigint_twice (int sig) |
43ff13b4 | 3191 | { |
b803fb0f | 3192 | signal (sig, handle_remote_sigint); |
43ff13b4 JM |
3193 | mark_async_signal_handler_wrapper (sigint_remote_twice_token); |
3194 | } | |
3195 | ||
6426a772 | 3196 | /* Perform the real interruption of the target execution, in response |
23860348 | 3197 | to a ^C. */ |
c5aa993b | 3198 | static void |
fba45db2 | 3199 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
3200 | { |
3201 | if (remote_debug) | |
3202 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
3203 | ||
3204 | target_stop (); | |
3205 | } | |
3206 | ||
3207 | /* Perform interrupt, if the first attempt did not succeed. Just give | |
23860348 | 3208 | up on the target alltogether. */ |
2df3850c | 3209 | void |
fba45db2 | 3210 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 3211 | { |
2df3850c JM |
3212 | if (remote_debug) |
3213 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt_twice called\n"); | |
b803fb0f DJ |
3214 | |
3215 | interrupt_query (); | |
43ff13b4 JM |
3216 | } |
3217 | ||
3218 | /* Reinstall the usual SIGINT handlers, after the target has | |
23860348 | 3219 | stopped. */ |
6426a772 JM |
3220 | static void |
3221 | cleanup_sigint_signal_handler (void *dummy) | |
43ff13b4 JM |
3222 | { |
3223 | signal (SIGINT, handle_sigint); | |
43ff13b4 JM |
3224 | } |
3225 | ||
c906108c SS |
3226 | /* Send ^C to target to halt it. Target will respond, and send us a |
3227 | packet. */ | |
507f3c78 | 3228 | static void (*ofunc) (int); |
c906108c | 3229 | |
7a292a7a SS |
3230 | /* The command line interface's stop routine. This function is installed |
3231 | as a signal handler for SIGINT. The first time a user requests a | |
3232 | stop, we call remote_stop to send a break or ^C. If there is no | |
3233 | response from the target (it didn't stop when the user requested it), | |
23860348 | 3234 | we ask the user if he'd like to detach from the target. */ |
c906108c | 3235 | static void |
fba45db2 | 3236 | remote_interrupt (int signo) |
c906108c | 3237 | { |
23860348 | 3238 | /* If this doesn't work, try more severe steps. */ |
7a292a7a SS |
3239 | signal (signo, remote_interrupt_twice); |
3240 | ||
b803fb0f | 3241 | gdb_call_async_signal_handler (sigint_remote_token, 1); |
7a292a7a SS |
3242 | } |
3243 | ||
3244 | /* The user typed ^C twice. */ | |
3245 | ||
3246 | static void | |
fba45db2 | 3247 | remote_interrupt_twice (int signo) |
7a292a7a SS |
3248 | { |
3249 | signal (signo, ofunc); | |
b803fb0f | 3250 | gdb_call_async_signal_handler (sigint_remote_twice_token, 1); |
c906108c SS |
3251 | signal (signo, remote_interrupt); |
3252 | } | |
7a292a7a SS |
3253 | |
3254 | /* This is the generic stop called via the target vector. When a target | |
3255 | interrupt is requested, either by the command line or the GUI, we | |
23860348 | 3256 | will eventually end up here. */ |
c906108c | 3257 | static void |
fba45db2 | 3258 | remote_stop (void) |
c906108c | 3259 | { |
7a292a7a SS |
3260 | /* Send a break or a ^C, depending on user preference. */ |
3261 | if (remote_debug) | |
0f71a2f6 | 3262 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 3263 | |
7a292a7a | 3264 | if (remote_break) |
2cd58942 | 3265 | serial_send_break (remote_desc); |
c906108c | 3266 | else |
2cd58942 | 3267 | serial_write (remote_desc, "\003", 1); |
c906108c SS |
3268 | } |
3269 | ||
3270 | /* Ask the user what to do when an interrupt is received. */ | |
3271 | ||
3272 | static void | |
fba45db2 | 3273 | interrupt_query (void) |
c906108c SS |
3274 | { |
3275 | target_terminal_ours (); | |
3276 | ||
3277 | if (query ("Interrupted while waiting for the program.\n\ | |
3278 | Give up (and stop debugging it)? ")) | |
3279 | { | |
3280 | target_mourn_inferior (); | |
b803fb0f | 3281 | signal (SIGINT, handle_sigint); |
315a522e | 3282 | deprecated_throw_reason (RETURN_QUIT); |
c906108c SS |
3283 | } |
3284 | ||
3285 | target_terminal_inferior (); | |
3286 | } | |
3287 | ||
6426a772 JM |
3288 | /* Enable/disable target terminal ownership. Most targets can use |
3289 | terminal groups to control terminal ownership. Remote targets are | |
3290 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 3291 | is required. */ |
6426a772 JM |
3292 | |
3293 | static void | |
3294 | remote_async_terminal_inferior (void) | |
3295 | { | |
3296 | /* FIXME: cagney/1999-09-27: Shouldn't need to test for | |
3297 | sync_execution here. This function should only be called when | |
3298 | GDB is resuming the inferior in the forground. A background | |
3299 | resume (``run&'') should leave GDB in control of the terminal and | |
23860348 | 3300 | consequently should not call this code. */ |
6426a772 JM |
3301 | if (!sync_execution) |
3302 | return; | |
3303 | /* FIXME: cagney/1999-09-27: Closely related to the above. Make | |
3304 | calls target_terminal_*() idenpotent. The event-loop GDB talking | |
3305 | to an asynchronous target with a synchronous command calls this | |
3306 | function from both event-top.c and infrun.c/infcmd.c. Once GDB | |
3307 | stops trying to transfer the terminal to the target when it | |
3308 | shouldn't this guard can go away. */ | |
3309 | if (!remote_async_terminal_ours_p) | |
3310 | return; | |
3311 | delete_file_handler (input_fd); | |
3312 | remote_async_terminal_ours_p = 0; | |
3313 | initialize_sigint_signal_handler (); | |
3314 | /* NOTE: At this point we could also register our selves as the | |
3315 | recipient of all input. Any characters typed could then be | |
23860348 | 3316 | passed on down to the target. */ |
6426a772 JM |
3317 | } |
3318 | ||
3319 | static void | |
3320 | remote_async_terminal_ours (void) | |
3321 | { | |
23860348 | 3322 | /* See FIXME in remote_async_terminal_inferior. */ |
6426a772 JM |
3323 | if (!sync_execution) |
3324 | return; | |
23860348 | 3325 | /* See FIXME in remote_async_terminal_inferior. */ |
6426a772 JM |
3326 | if (remote_async_terminal_ours_p) |
3327 | return; | |
3328 | cleanup_sigint_signal_handler (NULL); | |
3329 | add_file_handler (input_fd, stdin_event_handler, 0); | |
3330 | remote_async_terminal_ours_p = 1; | |
3331 | } | |
3332 | ||
c906108c | 3333 | void |
917317f4 | 3334 | remote_console_output (char *msg) |
c906108c SS |
3335 | { |
3336 | char *p; | |
3337 | ||
c5aa993b | 3338 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
3339 | { |
3340 | char tb[2]; | |
3341 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3342 | tb[0] = c; | |
3343 | tb[1] = 0; | |
43ff13b4 | 3344 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 3345 | } |
917317f4 | 3346 | gdb_flush (gdb_stdtarg); |
c906108c SS |
3347 | } |
3348 | ||
0f71a2f6 JM |
3349 | /* Wait until the remote machine stops, then return, |
3350 | storing status in STATUS just as `wait' would. | |
802188a7 | 3351 | Returns "pid", which in the case of a multi-threaded |
0f71a2f6 | 3352 | remote OS, is the thread-id. */ |
c906108c | 3353 | |
39f77062 KB |
3354 | static ptid_t |
3355 | remote_wait (ptid_t ptid, struct target_waitstatus *status) | |
c906108c | 3356 | { |
d01949b6 | 3357 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 3358 | struct remote_arch_state *rsa = get_remote_arch_state (); |
b2dd6311 | 3359 | ULONGEST thread_num = -1; |
3c3bea1c | 3360 | ULONGEST addr; |
cfa9d6d9 | 3361 | int solibs_changed = 0; |
c906108c SS |
3362 | |
3363 | status->kind = TARGET_WAITKIND_EXITED; | |
3364 | status->value.integer = 0; | |
3365 | ||
3366 | while (1) | |
3367 | { | |
2e9f7625 | 3368 | char *buf, *p; |
c906108c | 3369 | |
2d717e4f DJ |
3370 | if (rs->cached_wait_status) |
3371 | /* Use the cached wait status, but only once. */ | |
3372 | rs->cached_wait_status = 0; | |
3373 | else | |
9fa2223d | 3374 | { |
2d717e4f DJ |
3375 | ofunc = signal (SIGINT, remote_interrupt); |
3376 | /* If the user hit C-c before this packet, or between packets, | |
3377 | pretend that it was hit right here. */ | |
3378 | if (quit_flag) | |
3379 | { | |
3380 | quit_flag = 0; | |
3381 | remote_interrupt (SIGINT); | |
3382 | } | |
3383 | getpkt (&rs->buf, &rs->buf_size, 1); | |
3384 | signal (SIGINT, ofunc); | |
9fa2223d | 3385 | } |
c906108c | 3386 | |
2e9f7625 DJ |
3387 | buf = rs->buf; |
3388 | ||
3c3bea1c GS |
3389 | remote_stopped_by_watchpoint_p = 0; |
3390 | ||
c906108c SS |
3391 | switch (buf[0]) |
3392 | { | |
23860348 | 3393 | case 'E': /* Error of some sort. */ |
20b4711e DJ |
3394 | /* We're out of sync with the target now. Did it continue or not? |
3395 | Not is more likely, so report a stop. */ | |
8a3fe4f8 | 3396 | warning (_("Remote failure reply: %s"), buf); |
20b4711e DJ |
3397 | status->kind = TARGET_WAITKIND_STOPPED; |
3398 | status->value.sig = TARGET_SIGNAL_0; | |
3399 | goto got_status; | |
23860348 | 3400 | case 'F': /* File-I/O request. */ |
449092f6 CV |
3401 | remote_fileio_request (buf); |
3402 | continue; | |
23860348 | 3403 | case 'T': /* Status with PC, SP, FP, ... */ |
c906108c | 3404 | { |
cfd77fa1 | 3405 | gdb_byte regs[MAX_REGISTER_SIZE]; |
c906108c | 3406 | |
23860348 | 3407 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
c906108c | 3408 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where |
c5aa993b JM |
3409 | ss = signal number |
3410 | n... = register number | |
3411 | r... = register contents | |
3412 | */ | |
c906108c SS |
3413 | p = &buf[3]; /* after Txx */ |
3414 | ||
3415 | while (*p) | |
3416 | { | |
cfd77fa1 | 3417 | char *p1; |
c906108c | 3418 | char *p_temp; |
97345198 | 3419 | int fieldsize; |
3c3bea1c GS |
3420 | LONGEST pnum = 0; |
3421 | ||
23860348 MS |
3422 | /* If the packet contains a register number save it in |
3423 | pnum and set p1 to point to the character following | |
3424 | it. Otherwise p1 points to p. */ | |
c906108c | 3425 | |
23860348 MS |
3426 | /* If this packet is an awatch packet, don't parse the |
3427 | 'a' as a register number. */ | |
3c3bea1c GS |
3428 | |
3429 | if (strncmp (p, "awatch", strlen("awatch")) != 0) | |
3430 | { | |
3431 | /* Read the ``P'' register number. */ | |
3432 | pnum = strtol (p, &p_temp, 16); | |
cfd77fa1 | 3433 | p1 = p_temp; |
3c3bea1c | 3434 | } |
802188a7 | 3435 | else |
3c3bea1c | 3436 | p1 = p; |
c906108c | 3437 | |
23860348 | 3438 | if (p1 == p) /* No register number present here. */ |
c906108c | 3439 | { |
cfd77fa1 | 3440 | p1 = strchr (p, ':'); |
c906108c | 3441 | if (p1 == NULL) |
670aa98f | 3442 | error (_("Malformed packet(a) (missing colon): %s\n\ |
8a3fe4f8 | 3443 | Packet: '%s'\n"), |
670aa98f | 3444 | p, buf); |
3c3bea1c | 3445 | if (strncmp (p, "thread", p1 - p) == 0) |
c906108c SS |
3446 | { |
3447 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
3448 | record_currthread (thread_num); | |
cfd77fa1 | 3449 | p = p_temp; |
c906108c | 3450 | } |
3c3bea1c GS |
3451 | else if ((strncmp (p, "watch", p1 - p) == 0) |
3452 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
3453 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
3454 | { | |
3455 | remote_stopped_by_watchpoint_p = 1; | |
3456 | p = unpack_varlen_hex (++p1, &addr); | |
3457 | remote_watch_data_address = (CORE_ADDR)addr; | |
3458 | } | |
cfa9d6d9 DJ |
3459 | else if (strncmp (p, "library", p1 - p) == 0) |
3460 | { | |
3461 | p1++; | |
3462 | p_temp = p1; | |
3463 | while (*p_temp && *p_temp != ';') | |
3464 | p_temp++; | |
3465 | ||
3466 | solibs_changed = 1; | |
3467 | p = p_temp; | |
3468 | } | |
3c3bea1c GS |
3469 | else |
3470 | { | |
3471 | /* Silently skip unknown optional info. */ | |
3472 | p_temp = strchr (p1 + 1, ';'); | |
3473 | if (p_temp) | |
cfd77fa1 | 3474 | p = p_temp; |
3c3bea1c | 3475 | } |
c906108c SS |
3476 | } |
3477 | else | |
3478 | { | |
ea9c271d | 3479 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); |
c906108c SS |
3480 | p = p1; |
3481 | ||
3482 | if (*p++ != ':') | |
8a3fe4f8 AC |
3483 | error (_("Malformed packet(b) (missing colon): %s\n\ |
3484 | Packet: '%s'\n"), | |
3fcb8548 | 3485 | p, buf); |
c906108c | 3486 | |
ad10f812 | 3487 | if (reg == NULL) |
8a3fe4f8 AC |
3488 | error (_("Remote sent bad register number %s: %s\n\ |
3489 | Packet: '%s'\n"), | |
3fcb8548 | 3490 | phex_nz (pnum, 0), p, buf); |
c906108c | 3491 | |
cfd77fa1 | 3492 | fieldsize = hex2bin (p, regs, |
2bc416ba | 3493 | register_size (current_gdbarch, |
23860348 | 3494 | reg->regnum)); |
97345198 | 3495 | p += 2 * fieldsize; |
2bc416ba | 3496 | if (fieldsize < register_size (current_gdbarch, |
23860348 | 3497 | reg->regnum)) |
8a3fe4f8 | 3498 | warning (_("Remote reply is too short: %s"), buf); |
594f7785 | 3499 | regcache_raw_supply (get_current_regcache (), |
23860348 | 3500 | reg->regnum, regs); |
c906108c SS |
3501 | } |
3502 | ||
3503 | if (*p++ != ';') | |
2bc416ba | 3504 | error (_("Remote register badly formatted: %s\nhere: %s"), |
23860348 | 3505 | buf, p); |
c906108c SS |
3506 | } |
3507 | } | |
3508 | /* fall through */ | |
23860348 | 3509 | case 'S': /* Old style status, just signal only. */ |
cfa9d6d9 DJ |
3510 | if (solibs_changed) |
3511 | status->kind = TARGET_WAITKIND_LOADED; | |
3512 | else | |
3513 | { | |
3514 | status->kind = TARGET_WAITKIND_STOPPED; | |
3515 | status->value.sig = (enum target_signal) | |
3516 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3517 | } | |
c906108c | 3518 | |
0f71a2f6 JM |
3519 | if (buf[3] == 'p') |
3520 | { | |
0f71a2f6 JM |
3521 | thread_num = strtol ((const char *) &buf[4], NULL, 16); |
3522 | record_currthread (thread_num); | |
3523 | } | |
c906108c | 3524 | goto got_status; |
23860348 | 3525 | case 'W': /* Target exited. */ |
c906108c SS |
3526 | { |
3527 | /* The remote process exited. */ | |
3528 | status->kind = TARGET_WAITKIND_EXITED; | |
3529 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
3530 | goto got_status; | |
3531 | } | |
3532 | case 'X': | |
3533 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
3534 | status->value.sig = (enum target_signal) | |
3535 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
c906108c SS |
3536 | |
3537 | goto got_status; | |
23860348 | 3538 | case 'O': /* Console output. */ |
c906108c SS |
3539 | remote_console_output (buf + 1); |
3540 | continue; | |
3541 | case '\0': | |
3542 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3543 | { | |
3544 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3545 | the remote system doesn't support it. */ |
c906108c SS |
3546 | target_terminal_ours_for_output (); |
3547 | printf_filtered | |
3548 | ("Can't send signals to this remote system. %s not sent.\n", | |
3549 | target_signal_to_name (last_sent_signal)); | |
3550 | last_sent_signal = TARGET_SIGNAL_0; | |
3551 | target_terminal_inferior (); | |
3552 | ||
3553 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3554 | putpkt ((char *) buf); | |
3555 | continue; | |
3556 | } | |
3557 | /* else fallthrough */ | |
3558 | default: | |
8a3fe4f8 | 3559 | warning (_("Invalid remote reply: %s"), buf); |
c906108c SS |
3560 | continue; |
3561 | } | |
3562 | } | |
c5aa993b | 3563 | got_status: |
c906108c SS |
3564 | if (thread_num != -1) |
3565 | { | |
39f77062 | 3566 | return pid_to_ptid (thread_num); |
c906108c | 3567 | } |
39f77062 | 3568 | return inferior_ptid; |
c906108c SS |
3569 | } |
3570 | ||
23860348 | 3571 | /* Async version of remote_wait. */ |
39f77062 KB |
3572 | static ptid_t |
3573 | remote_async_wait (ptid_t ptid, struct target_waitstatus *status) | |
43ff13b4 | 3574 | { |
d01949b6 | 3575 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 3576 | struct remote_arch_state *rsa = get_remote_arch_state (); |
b2dd6311 | 3577 | ULONGEST thread_num = -1; |
3c3bea1c | 3578 | ULONGEST addr; |
cfa9d6d9 | 3579 | int solibs_changed = 0; |
43ff13b4 JM |
3580 | |
3581 | status->kind = TARGET_WAITKIND_EXITED; | |
3582 | status->value.integer = 0; | |
3583 | ||
3c3bea1c GS |
3584 | remote_stopped_by_watchpoint_p = 0; |
3585 | ||
43ff13b4 JM |
3586 | while (1) |
3587 | { | |
2e9f7625 | 3588 | char *buf, *p; |
c5aa993b | 3589 | |
2d717e4f DJ |
3590 | if (rs->cached_wait_status) |
3591 | /* Use the cached wait status, but only once. */ | |
3592 | rs->cached_wait_status = 0; | |
3593 | else | |
9fa2223d | 3594 | { |
2d717e4f | 3595 | if (!target_is_async_p ()) |
9fa2223d | 3596 | { |
2d717e4f DJ |
3597 | ofunc = signal (SIGINT, remote_interrupt); |
3598 | /* If the user hit C-c before this packet, or between packets, | |
3599 | pretend that it was hit right here. */ | |
3600 | if (quit_flag) | |
3601 | { | |
3602 | quit_flag = 0; | |
3603 | remote_interrupt (SIGINT); | |
3604 | } | |
9fa2223d | 3605 | } |
2d717e4f DJ |
3606 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
3607 | _never_ wait for ever -> test on target_is_async_p(). | |
3608 | However, before we do that we need to ensure that the caller | |
3609 | knows how to take the target into/out of async mode. */ | |
3610 | getpkt (&rs->buf, &rs->buf_size, wait_forever_enabled_p); | |
3611 | if (!target_is_async_p ()) | |
3612 | signal (SIGINT, ofunc); | |
9fa2223d | 3613 | } |
43ff13b4 | 3614 | |
2e9f7625 DJ |
3615 | buf = rs->buf; |
3616 | ||
43ff13b4 JM |
3617 | switch (buf[0]) |
3618 | { | |
23860348 | 3619 | case 'E': /* Error of some sort. */ |
20b4711e DJ |
3620 | /* We're out of sync with the target now. Did it continue or not? |
3621 | Not is more likely, so report a stop. */ | |
8a3fe4f8 | 3622 | warning (_("Remote failure reply: %s"), buf); |
20b4711e DJ |
3623 | status->kind = TARGET_WAITKIND_STOPPED; |
3624 | status->value.sig = TARGET_SIGNAL_0; | |
3625 | goto got_status; | |
23860348 | 3626 | case 'F': /* File-I/O request. */ |
449092f6 CV |
3627 | remote_fileio_request (buf); |
3628 | continue; | |
23860348 | 3629 | case 'T': /* Status with PC, SP, FP, ... */ |
43ff13b4 | 3630 | { |
cfd77fa1 | 3631 | gdb_byte regs[MAX_REGISTER_SIZE]; |
43ff13b4 | 3632 | |
23860348 | 3633 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
43ff13b4 | 3634 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where |
c5aa993b JM |
3635 | ss = signal number |
3636 | n... = register number | |
3637 | r... = register contents | |
3638 | */ | |
43ff13b4 JM |
3639 | p = &buf[3]; /* after Txx */ |
3640 | ||
3641 | while (*p) | |
3642 | { | |
cfd77fa1 | 3643 | char *p1; |
43ff13b4 | 3644 | char *p_temp; |
6c3f2dbf | 3645 | int fieldsize; |
3c3bea1c | 3646 | long pnum = 0; |
43ff13b4 | 3647 | |
23860348 MS |
3648 | /* If the packet contains a register number, save it |
3649 | in pnum and set p1 to point to the character | |
3650 | following it. Otherwise p1 points to p. */ | |
3c3bea1c GS |
3651 | |
3652 | /* If this packet is an awatch packet, don't parse the 'a' | |
3653 | as a register number. */ | |
802188a7 | 3654 | |
cfa9d6d9 | 3655 | if (strncmp (p, "awatch", strlen("awatch")) != 0) |
3c3bea1c GS |
3656 | { |
3657 | /* Read the register number. */ | |
3658 | pnum = strtol (p, &p_temp, 16); | |
cfd77fa1 | 3659 | p1 = p_temp; |
3c3bea1c | 3660 | } |
802188a7 | 3661 | else |
3c3bea1c | 3662 | p1 = p; |
43ff13b4 | 3663 | |
23860348 | 3664 | if (p1 == p) /* No register number present here. */ |
43ff13b4 | 3665 | { |
cfd77fa1 | 3666 | p1 = strchr (p, ':'); |
43ff13b4 | 3667 | if (p1 == NULL) |
8a3fe4f8 AC |
3668 | error (_("Malformed packet(a) (missing colon): %s\n\ |
3669 | Packet: '%s'\n"), | |
3fcb8548 | 3670 | p, buf); |
3c3bea1c | 3671 | if (strncmp (p, "thread", p1 - p) == 0) |
43ff13b4 JM |
3672 | { |
3673 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
3674 | record_currthread (thread_num); | |
cfd77fa1 | 3675 | p = p_temp; |
43ff13b4 | 3676 | } |
3c3bea1c GS |
3677 | else if ((strncmp (p, "watch", p1 - p) == 0) |
3678 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
3679 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
3680 | { | |
3681 | remote_stopped_by_watchpoint_p = 1; | |
3682 | p = unpack_varlen_hex (++p1, &addr); | |
3683 | remote_watch_data_address = (CORE_ADDR)addr; | |
3684 | } | |
cfa9d6d9 DJ |
3685 | else if (strncmp (p, "library", p1 - p) == 0) |
3686 | { | |
3687 | p1++; | |
3688 | p_temp = p1; | |
3689 | while (*p_temp && *p_temp != ';') | |
3690 | p_temp++; | |
3691 | ||
3692 | solibs_changed = 1; | |
3693 | p = p_temp; | |
3694 | } | |
3c3bea1c GS |
3695 | else |
3696 | { | |
3697 | /* Silently skip unknown optional info. */ | |
cfd77fa1 | 3698 | p_temp = strchr (p1 + 1, ';'); |
3c3bea1c GS |
3699 | if (p_temp) |
3700 | p = p_temp; | |
3701 | } | |
43ff13b4 | 3702 | } |
802188a7 | 3703 | |
43ff13b4 JM |
3704 | else |
3705 | { | |
ea9c271d | 3706 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); |
43ff13b4 | 3707 | p = p1; |
43ff13b4 | 3708 | if (*p++ != ':') |
8a3fe4f8 AC |
3709 | error (_("Malformed packet(b) (missing colon): %s\n\ |
3710 | Packet: '%s'\n"), | |
3fcb8548 | 3711 | p, buf); |
43ff13b4 | 3712 | |
ad10f812 | 3713 | if (reg == NULL) |
8a3fe4f8 AC |
3714 | error (_("Remote sent bad register number %ld: %s\n\ |
3715 | Packet: '%s'\n"), | |
3fcb8548 | 3716 | pnum, p, buf); |
43ff13b4 | 3717 | |
cfd77fa1 | 3718 | fieldsize = hex2bin (p, regs, |
2bc416ba | 3719 | register_size (current_gdbarch, |
23860348 | 3720 | reg->regnum)); |
6c3f2dbf | 3721 | p += 2 * fieldsize; |
2bc416ba | 3722 | if (fieldsize < register_size (current_gdbarch, |
23860348 | 3723 | reg->regnum)) |
8a3fe4f8 | 3724 | warning (_("Remote reply is too short: %s"), buf); |
594f7785 UW |
3725 | regcache_raw_supply (get_current_regcache (), |
3726 | reg->regnum, regs); | |
43ff13b4 JM |
3727 | } |
3728 | ||
3729 | if (*p++ != ';') | |
8a3fe4f8 | 3730 | error (_("Remote register badly formatted: %s\nhere: %s"), |
0a2cfde4 | 3731 | buf, p); |
43ff13b4 JM |
3732 | } |
3733 | } | |
3734 | /* fall through */ | |
23860348 | 3735 | case 'S': /* Old style status, just signal only. */ |
cfa9d6d9 DJ |
3736 | if (solibs_changed) |
3737 | status->kind = TARGET_WAITKIND_LOADED; | |
3738 | else | |
3739 | { | |
3740 | status->kind = TARGET_WAITKIND_STOPPED; | |
3741 | status->value.sig = (enum target_signal) | |
3742 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3743 | } | |
43ff13b4 JM |
3744 | |
3745 | if (buf[3] == 'p') | |
3746 | { | |
43ff13b4 JM |
3747 | thread_num = strtol ((const char *) &buf[4], NULL, 16); |
3748 | record_currthread (thread_num); | |
3749 | } | |
43ff13b4 | 3750 | goto got_status; |
23860348 | 3751 | case 'W': /* Target exited. */ |
43ff13b4 JM |
3752 | { |
3753 | /* The remote process exited. */ | |
3754 | status->kind = TARGET_WAITKIND_EXITED; | |
3755 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
3756 | goto got_status; | |
3757 | } | |
3758 | case 'X': | |
3759 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
3760 | status->value.sig = (enum target_signal) | |
3761 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
43ff13b4 JM |
3762 | |
3763 | goto got_status; | |
23860348 | 3764 | case 'O': /* Console output. */ |
43ff13b4 | 3765 | remote_console_output (buf + 1); |
c4093a6a | 3766 | /* Return immediately to the event loop. The event loop will |
23860348 | 3767 | still be waiting on the inferior afterwards. */ |
c4093a6a JM |
3768 | status->kind = TARGET_WAITKIND_IGNORE; |
3769 | goto got_status; | |
43ff13b4 JM |
3770 | case '\0': |
3771 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3772 | { | |
3773 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3774 | the remote system doesn't support it. */ |
43ff13b4 JM |
3775 | target_terminal_ours_for_output (); |
3776 | printf_filtered | |
3777 | ("Can't send signals to this remote system. %s not sent.\n", | |
3778 | target_signal_to_name (last_sent_signal)); | |
3779 | last_sent_signal = TARGET_SIGNAL_0; | |
3780 | target_terminal_inferior (); | |
3781 | ||
3782 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3783 | putpkt ((char *) buf); | |
3784 | continue; | |
3785 | } | |
3786 | /* else fallthrough */ | |
3787 | default: | |
8a3fe4f8 | 3788 | warning (_("Invalid remote reply: %s"), buf); |
43ff13b4 JM |
3789 | continue; |
3790 | } | |
3791 | } | |
c5aa993b | 3792 | got_status: |
43ff13b4 JM |
3793 | if (thread_num != -1) |
3794 | { | |
39f77062 | 3795 | return pid_to_ptid (thread_num); |
43ff13b4 | 3796 | } |
39f77062 | 3797 | return inferior_ptid; |
43ff13b4 JM |
3798 | } |
3799 | ||
74ca34ce | 3800 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 3801 | |
b96ec7ac | 3802 | static int |
56be3814 | 3803 | fetch_register_using_p (struct regcache *regcache, struct packet_reg *reg) |
b96ec7ac AC |
3804 | { |
3805 | struct remote_state *rs = get_remote_state (); | |
2e9f7625 | 3806 | char *buf, *p; |
b96ec7ac AC |
3807 | char regp[MAX_REGISTER_SIZE]; |
3808 | int i; | |
3809 | ||
74ca34ce DJ |
3810 | if (remote_protocol_packets[PACKET_p].support == PACKET_DISABLE) |
3811 | return 0; | |
3812 | ||
3813 | if (reg->pnum == -1) | |
3814 | return 0; | |
3815 | ||
2e9f7625 | 3816 | p = rs->buf; |
fcad0fa4 | 3817 | *p++ = 'p'; |
74ca34ce | 3818 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 3819 | *p++ = '\0'; |
6d820c5c | 3820 | remote_send (&rs->buf, &rs->buf_size); |
3f9a994c | 3821 | |
2e9f7625 DJ |
3822 | buf = rs->buf; |
3823 | ||
74ca34ce DJ |
3824 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_p])) |
3825 | { | |
3826 | case PACKET_OK: | |
3827 | break; | |
3828 | case PACKET_UNKNOWN: | |
3829 | return 0; | |
3830 | case PACKET_ERROR: | |
3831 | error (_("Could not fetch register \"%s\""), | |
4a22f64d | 3832 | gdbarch_register_name (get_regcache_arch (regcache), reg->regnum)); |
74ca34ce | 3833 | } |
3f9a994c JB |
3834 | |
3835 | /* If this register is unfetchable, tell the regcache. */ | |
3836 | if (buf[0] == 'x') | |
8480adf2 | 3837 | { |
56be3814 | 3838 | regcache_raw_supply (regcache, reg->regnum, NULL); |
8480adf2 | 3839 | return 1; |
b96ec7ac | 3840 | } |
b96ec7ac | 3841 | |
3f9a994c JB |
3842 | /* Otherwise, parse and supply the value. */ |
3843 | p = buf; | |
3844 | i = 0; | |
3845 | while (p[0] != 0) | |
3846 | { | |
3847 | if (p[1] == 0) | |
74ca34ce | 3848 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
3849 | |
3850 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3851 | p += 2; | |
3852 | } | |
56be3814 | 3853 | regcache_raw_supply (regcache, reg->regnum, regp); |
3f9a994c | 3854 | return 1; |
b96ec7ac AC |
3855 | } |
3856 | ||
74ca34ce DJ |
3857 | /* Fetch the registers included in the target's 'g' packet. */ |
3858 | ||
29709017 DJ |
3859 | static int |
3860 | send_g_packet (void) | |
c906108c | 3861 | { |
d01949b6 | 3862 | struct remote_state *rs = get_remote_state (); |
74ca34ce | 3863 | int i, buf_len; |
c906108c | 3864 | char *p; |
74ca34ce | 3865 | char *regs; |
c906108c | 3866 | |
74ca34ce DJ |
3867 | sprintf (rs->buf, "g"); |
3868 | remote_send (&rs->buf, &rs->buf_size); | |
c906108c | 3869 | |
29709017 DJ |
3870 | /* We can get out of synch in various cases. If the first character |
3871 | in the buffer is not a hex character, assume that has happened | |
3872 | and try to fetch another packet to read. */ | |
3873 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
3874 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
3875 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
3876 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
3877 | { | |
3878 | if (remote_debug) | |
3879 | fprintf_unfiltered (gdb_stdlog, | |
3880 | "Bad register packet; fetching a new packet\n"); | |
3881 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3882 | } | |
3883 | ||
74ca34ce DJ |
3884 | buf_len = strlen (rs->buf); |
3885 | ||
3886 | /* Sanity check the received packet. */ | |
3887 | if (buf_len % 2 != 0) | |
3888 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf); | |
29709017 DJ |
3889 | |
3890 | return buf_len / 2; | |
3891 | } | |
3892 | ||
3893 | static void | |
56be3814 | 3894 | process_g_packet (struct regcache *regcache) |
29709017 | 3895 | { |
4a22f64d | 3896 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
29709017 DJ |
3897 | struct remote_state *rs = get_remote_state (); |
3898 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
3899 | int i, buf_len; | |
3900 | char *p; | |
3901 | char *regs; | |
3902 | ||
3903 | buf_len = strlen (rs->buf); | |
3904 | ||
3905 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce DJ |
3906 | if (buf_len > 2 * rsa->sizeof_g_packet) |
3907 | error (_("Remote 'g' packet reply is too long: %s"), rs->buf); | |
3908 | ||
3909 | /* Save the size of the packet sent to us by the target. It is used | |
3910 | as a heuristic when determining the max size of packets that the | |
3911 | target can safely receive. */ | |
3912 | if (rsa->actual_register_packet_size == 0) | |
3913 | rsa->actual_register_packet_size = buf_len; | |
3914 | ||
3915 | /* If this is smaller than we guessed the 'g' packet would be, | |
3916 | update our records. A 'g' reply that doesn't include a register's | |
3917 | value implies either that the register is not available, or that | |
3918 | the 'p' packet must be used. */ | |
3919 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 3920 | { |
74ca34ce DJ |
3921 | rsa->sizeof_g_packet = buf_len / 2; |
3922 | ||
4a22f64d | 3923 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 3924 | { |
74ca34ce DJ |
3925 | if (rsa->regs[i].pnum == -1) |
3926 | continue; | |
3927 | ||
3928 | if (rsa->regs[i].offset >= rsa->sizeof_g_packet) | |
3929 | rsa->regs[i].in_g_packet = 0; | |
b96ec7ac | 3930 | else |
74ca34ce | 3931 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 3932 | } |
74ca34ce | 3933 | } |
b323314b | 3934 | |
74ca34ce | 3935 | regs = alloca (rsa->sizeof_g_packet); |
c906108c SS |
3936 | |
3937 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 3938 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 3939 | |
c906108c SS |
3940 | /* Reply describes registers byte by byte, each byte encoded as two |
3941 | hex characters. Suck them all up, then supply them to the | |
3942 | register cacheing/storage mechanism. */ | |
3943 | ||
74ca34ce | 3944 | p = rs->buf; |
ea9c271d | 3945 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 3946 | { |
74ca34ce DJ |
3947 | if (p[0] == 0 || p[1] == 0) |
3948 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
3949 | internal_error (__FILE__, __LINE__, | |
3950 | "unexpected end of 'g' packet reply"); | |
3951 | ||
c906108c | 3952 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 3953 | regs[i] = 0; /* 'x' */ |
c906108c SS |
3954 | else |
3955 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3956 | p += 2; | |
3957 | } | |
3958 | ||
ad10f812 | 3959 | { |
b323314b | 3960 | int i; |
4a22f64d | 3961 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
ad10f812 | 3962 | { |
ea9c271d | 3963 | struct packet_reg *r = &rsa->regs[i]; |
b323314b AC |
3964 | if (r->in_g_packet) |
3965 | { | |
74ca34ce DJ |
3966 | if (r->offset * 2 >= strlen (rs->buf)) |
3967 | /* This shouldn't happen - we adjusted in_g_packet above. */ | |
3968 | internal_error (__FILE__, __LINE__, | |
3969 | "unexpected end of 'g' packet reply"); | |
3970 | else if (rs->buf[r->offset * 2] == 'x') | |
8ccc1287 | 3971 | { |
74ca34ce | 3972 | gdb_assert (r->offset * 2 < strlen (rs->buf)); |
8ccc1287 AC |
3973 | /* The register isn't available, mark it as such (at |
3974 | the same time setting the value to zero). */ | |
56be3814 | 3975 | regcache_raw_supply (regcache, r->regnum, NULL); |
8ccc1287 AC |
3976 | } |
3977 | else | |
56be3814 | 3978 | regcache_raw_supply (regcache, r->regnum, |
8ccc1287 | 3979 | regs + r->offset); |
b323314b | 3980 | } |
ad10f812 AC |
3981 | } |
3982 | } | |
c906108c SS |
3983 | } |
3984 | ||
29709017 | 3985 | static void |
56be3814 | 3986 | fetch_registers_using_g (struct regcache *regcache) |
29709017 DJ |
3987 | { |
3988 | send_g_packet (); | |
56be3814 | 3989 | process_g_packet (regcache); |
29709017 DJ |
3990 | } |
3991 | ||
74ca34ce | 3992 | static void |
56be3814 | 3993 | remote_fetch_registers (struct regcache *regcache, int regnum) |
74ca34ce DJ |
3994 | { |
3995 | struct remote_state *rs = get_remote_state (); | |
3996 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
3997 | int i; | |
3998 | ||
3999 | set_thread (PIDGET (inferior_ptid), 1); | |
4000 | ||
4001 | if (regnum >= 0) | |
4002 | { | |
4003 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
4004 | gdb_assert (reg != NULL); | |
4005 | ||
4006 | /* If this register might be in the 'g' packet, try that first - | |
4007 | we are likely to read more than one register. If this is the | |
4008 | first 'g' packet, we might be overly optimistic about its | |
4009 | contents, so fall back to 'p'. */ | |
4010 | if (reg->in_g_packet) | |
4011 | { | |
56be3814 | 4012 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
4013 | if (reg->in_g_packet) |
4014 | return; | |
4015 | } | |
4016 | ||
56be3814 | 4017 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
4018 | return; |
4019 | ||
4020 | /* This register is not available. */ | |
56be3814 | 4021 | regcache_raw_supply (regcache, reg->regnum, NULL); |
74ca34ce DJ |
4022 | |
4023 | return; | |
4024 | } | |
4025 | ||
56be3814 | 4026 | fetch_registers_using_g (regcache); |
74ca34ce | 4027 | |
4a22f64d | 4028 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 4029 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 4030 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
4031 | { |
4032 | /* This register is not available. */ | |
56be3814 | 4033 | regcache_raw_supply (regcache, i, NULL); |
74ca34ce DJ |
4034 | } |
4035 | } | |
4036 | ||
c906108c SS |
4037 | /* Prepare to store registers. Since we may send them all (using a |
4038 | 'G' request), we have to read out the ones we don't want to change | |
4039 | first. */ | |
4040 | ||
c5aa993b | 4041 | static void |
316f2060 | 4042 | remote_prepare_to_store (struct regcache *regcache) |
c906108c | 4043 | { |
ea9c271d | 4044 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cf0e1e0d | 4045 | int i; |
cfd77fa1 | 4046 | gdb_byte buf[MAX_REGISTER_SIZE]; |
cf0e1e0d | 4047 | |
c906108c | 4048 | /* Make sure the entire registers array is valid. */ |
444abaca | 4049 | switch (remote_protocol_packets[PACKET_P].support) |
5a2468f5 JM |
4050 | { |
4051 | case PACKET_DISABLE: | |
4052 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 4053 | /* Make sure all the necessary registers are cached. */ |
4a22f64d | 4054 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
ea9c271d | 4055 | if (rsa->regs[i].in_g_packet) |
316f2060 | 4056 | regcache_raw_read (regcache, rsa->regs[i].regnum, buf); |
5a2468f5 JM |
4057 | break; |
4058 | case PACKET_ENABLE: | |
4059 | break; | |
4060 | } | |
4061 | } | |
4062 | ||
ad10f812 | 4063 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 4064 | packet was not recognized. */ |
5a2468f5 JM |
4065 | |
4066 | static int | |
56be3814 | 4067 | store_register_using_P (const struct regcache *regcache, struct packet_reg *reg) |
5a2468f5 | 4068 | { |
4a22f64d | 4069 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
d01949b6 | 4070 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 4071 | struct remote_arch_state *rsa = get_remote_arch_state (); |
5a2468f5 | 4072 | /* Try storing a single register. */ |
6d820c5c | 4073 | char *buf = rs->buf; |
cfd77fa1 | 4074 | gdb_byte regp[MAX_REGISTER_SIZE]; |
5a2468f5 | 4075 | char *p; |
5a2468f5 | 4076 | |
74ca34ce DJ |
4077 | if (remote_protocol_packets[PACKET_P].support == PACKET_DISABLE) |
4078 | return 0; | |
4079 | ||
4080 | if (reg->pnum == -1) | |
4081 | return 0; | |
4082 | ||
ea9c271d | 4083 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 4084 | p = buf + strlen (buf); |
56be3814 | 4085 | regcache_raw_collect (regcache, reg->regnum, regp); |
4a22f64d | 4086 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
6d820c5c | 4087 | remote_send (&rs->buf, &rs->buf_size); |
5a2468f5 | 4088 | |
74ca34ce DJ |
4089 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
4090 | { | |
4091 | case PACKET_OK: | |
4092 | return 1; | |
4093 | case PACKET_ERROR: | |
4094 | error (_("Could not write register \"%s\""), | |
4a22f64d | 4095 | gdbarch_register_name (gdbarch, reg->regnum)); |
74ca34ce DJ |
4096 | case PACKET_UNKNOWN: |
4097 | return 0; | |
4098 | default: | |
4099 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
4100 | } | |
c906108c SS |
4101 | } |
4102 | ||
23860348 MS |
4103 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
4104 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
4105 | |
4106 | static void | |
56be3814 | 4107 | store_registers_using_G (const struct regcache *regcache) |
c906108c | 4108 | { |
d01949b6 | 4109 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 4110 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cfd77fa1 | 4111 | gdb_byte *regs; |
c906108c SS |
4112 | char *p; |
4113 | ||
193cb69f AC |
4114 | /* Extract all the registers in the regcache copying them into a |
4115 | local buffer. */ | |
4116 | { | |
b323314b | 4117 | int i; |
ea9c271d DJ |
4118 | regs = alloca (rsa->sizeof_g_packet); |
4119 | memset (regs, 0, rsa->sizeof_g_packet); | |
4a22f64d | 4120 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
193cb69f | 4121 | { |
ea9c271d | 4122 | struct packet_reg *r = &rsa->regs[i]; |
b323314b | 4123 | if (r->in_g_packet) |
56be3814 | 4124 | regcache_raw_collect (regcache, r->regnum, regs + r->offset); |
193cb69f AC |
4125 | } |
4126 | } | |
c906108c SS |
4127 | |
4128 | /* Command describes registers byte by byte, | |
4129 | each byte encoded as two hex characters. */ | |
6d820c5c | 4130 | p = rs->buf; |
193cb69f | 4131 | *p++ = 'G'; |
74ca34ce DJ |
4132 | /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets |
4133 | updated. */ | |
4134 | bin2hex (regs, p, rsa->sizeof_g_packet); | |
6d820c5c | 4135 | remote_send (&rs->buf, &rs->buf_size); |
c906108c | 4136 | } |
74ca34ce DJ |
4137 | |
4138 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
4139 | of the register cache buffer. FIXME: ignores errors. */ | |
4140 | ||
4141 | static void | |
56be3814 | 4142 | remote_store_registers (struct regcache *regcache, int regnum) |
74ca34ce DJ |
4143 | { |
4144 | struct remote_state *rs = get_remote_state (); | |
4145 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
4146 | int i; | |
4147 | ||
4148 | set_thread (PIDGET (inferior_ptid), 1); | |
4149 | ||
4150 | if (regnum >= 0) | |
4151 | { | |
4152 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
4153 | gdb_assert (reg != NULL); | |
4154 | ||
4155 | /* Always prefer to store registers using the 'P' packet if | |
4156 | possible; we often change only a small number of registers. | |
4157 | Sometimes we change a larger number; we'd need help from a | |
4158 | higher layer to know to use 'G'. */ | |
56be3814 | 4159 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
4160 | return; |
4161 | ||
4162 | /* For now, don't complain if we have no way to write the | |
4163 | register. GDB loses track of unavailable registers too | |
4164 | easily. Some day, this may be an error. We don't have | |
4165 | any way to read the register, either... */ | |
4166 | if (!reg->in_g_packet) | |
4167 | return; | |
4168 | ||
56be3814 | 4169 | store_registers_using_G (regcache); |
74ca34ce DJ |
4170 | return; |
4171 | } | |
4172 | ||
56be3814 | 4173 | store_registers_using_G (regcache); |
74ca34ce | 4174 | |
4a22f64d | 4175 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 4176 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 4177 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
4178 | /* See above for why we do not issue an error here. */ |
4179 | continue; | |
4180 | } | |
c906108c SS |
4181 | \f |
4182 | ||
4183 | /* Return the number of hex digits in num. */ | |
4184 | ||
4185 | static int | |
fba45db2 | 4186 | hexnumlen (ULONGEST num) |
c906108c SS |
4187 | { |
4188 | int i; | |
4189 | ||
4190 | for (i = 0; num != 0; i++) | |
4191 | num >>= 4; | |
4192 | ||
4193 | return max (i, 1); | |
4194 | } | |
4195 | ||
2df3850c | 4196 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
4197 | |
4198 | static int | |
fba45db2 | 4199 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 4200 | { |
c906108c | 4201 | int len = hexnumlen (num); |
2df3850c JM |
4202 | return hexnumnstr (buf, num, len); |
4203 | } | |
4204 | ||
c906108c | 4205 | |
2df3850c | 4206 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 4207 | |
2df3850c | 4208 | static int |
fba45db2 | 4209 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
4210 | { |
4211 | int i; | |
4212 | ||
4213 | buf[width] = '\0'; | |
4214 | ||
4215 | for (i = width - 1; i >= 0; i--) | |
c906108c | 4216 | { |
c5aa993b | 4217 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
4218 | num >>= 4; |
4219 | } | |
4220 | ||
2df3850c | 4221 | return width; |
c906108c SS |
4222 | } |
4223 | ||
23860348 | 4224 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
4225 | |
4226 | static CORE_ADDR | |
fba45db2 | 4227 | remote_address_masked (CORE_ADDR addr) |
c906108c | 4228 | { |
911c95a5 UW |
4229 | int address_size = remote_address_size; |
4230 | /* If "remoteaddresssize" was not set, default to target address size. */ | |
4231 | if (!address_size) | |
4232 | address_size = gdbarch_addr_bit (current_gdbarch); | |
4233 | ||
4234 | if (address_size > 0 | |
4235 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
4236 | { |
4237 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 4238 | in a ULONGEST variable. */ |
c906108c | 4239 | ULONGEST mask = 1; |
911c95a5 | 4240 | mask = (mask << address_size) - 1; |
c906108c SS |
4241 | addr &= mask; |
4242 | } | |
4243 | return addr; | |
4244 | } | |
4245 | ||
a31ea83d DJ |
4246 | /* Convert BUFFER, binary data at least LEN bytes long, into escaped |
4247 | binary data in OUT_BUF. Set *OUT_LEN to the length of the data | |
4248 | encoded in OUT_BUF, and return the number of bytes in OUT_BUF | |
4249 | (which may be more than *OUT_LEN due to escape characters). The | |
4250 | total number of bytes in the output buffer will be at most | |
4251 | OUT_MAXLEN. */ | |
4252 | ||
4253 | static int | |
4254 | remote_escape_output (const gdb_byte *buffer, int len, | |
4255 | gdb_byte *out_buf, int *out_len, | |
4256 | int out_maxlen) | |
4257 | { | |
4258 | int input_index, output_index; | |
4259 | ||
4260 | output_index = 0; | |
4261 | for (input_index = 0; input_index < len; input_index++) | |
4262 | { | |
4263 | gdb_byte b = buffer[input_index]; | |
4264 | ||
4265 | if (b == '$' || b == '#' || b == '}') | |
4266 | { | |
4267 | /* These must be escaped. */ | |
4268 | if (output_index + 2 > out_maxlen) | |
4269 | break; | |
4270 | out_buf[output_index++] = '}'; | |
4271 | out_buf[output_index++] = b ^ 0x20; | |
4272 | } | |
4273 | else | |
4274 | { | |
4275 | if (output_index + 1 > out_maxlen) | |
4276 | break; | |
4277 | out_buf[output_index++] = b; | |
4278 | } | |
4279 | } | |
4280 | ||
4281 | *out_len = input_index; | |
4282 | return output_index; | |
4283 | } | |
4284 | ||
0876f84a DJ |
4285 | /* Convert BUFFER, escaped data LEN bytes long, into binary data |
4286 | in OUT_BUF. Return the number of bytes written to OUT_BUF. | |
4287 | Raise an error if the total number of bytes exceeds OUT_MAXLEN. | |
4288 | ||
4289 | This function reverses remote_escape_output. It allows more | |
4290 | escaped characters than that function does, in particular because | |
4291 | '*' must be escaped to avoid the run-length encoding processing | |
4292 | in reading packets. */ | |
4293 | ||
4294 | static int | |
4295 | remote_unescape_input (const gdb_byte *buffer, int len, | |
4296 | gdb_byte *out_buf, int out_maxlen) | |
4297 | { | |
4298 | int input_index, output_index; | |
4299 | int escaped; | |
4300 | ||
4301 | output_index = 0; | |
4302 | escaped = 0; | |
4303 | for (input_index = 0; input_index < len; input_index++) | |
4304 | { | |
4305 | gdb_byte b = buffer[input_index]; | |
4306 | ||
4307 | if (output_index + 1 > out_maxlen) | |
4308 | { | |
4309 | warning (_("Received too much data from remote target;" | |
4310 | " ignoring overflow.")); | |
4311 | return output_index; | |
4312 | } | |
4313 | ||
4314 | if (escaped) | |
4315 | { | |
4316 | out_buf[output_index++] = b ^ 0x20; | |
4317 | escaped = 0; | |
4318 | } | |
4319 | else if (b == '}') | |
4320 | escaped = 1; | |
4321 | else | |
4322 | out_buf[output_index++] = b; | |
4323 | } | |
4324 | ||
4325 | if (escaped) | |
4326 | error (_("Unmatched escape character in target response.")); | |
4327 | ||
4328 | return output_index; | |
4329 | } | |
4330 | ||
c906108c SS |
4331 | /* Determine whether the remote target supports binary downloading. |
4332 | This is accomplished by sending a no-op memory write of zero length | |
4333 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
4334 | the whole packet, since many stubs strip the eighth bit and |
4335 | subsequently compute a wrong checksum, which causes real havoc with | |
4336 | remote_write_bytes. | |
7a292a7a | 4337 | |
96baa820 JM |
4338 | NOTE: This can still lose if the serial line is not eight-bit |
4339 | clean. In cases like this, the user should clear "remote | |
23860348 | 4340 | X-packet". */ |
96baa820 | 4341 | |
c906108c | 4342 | static void |
fba45db2 | 4343 | check_binary_download (CORE_ADDR addr) |
c906108c | 4344 | { |
d01949b6 | 4345 | struct remote_state *rs = get_remote_state (); |
24b06219 | 4346 | |
444abaca | 4347 | switch (remote_protocol_packets[PACKET_X].support) |
c906108c | 4348 | { |
96baa820 JM |
4349 | case PACKET_DISABLE: |
4350 | break; | |
4351 | case PACKET_ENABLE: | |
4352 | break; | |
4353 | case PACKET_SUPPORT_UNKNOWN: | |
4354 | { | |
96baa820 | 4355 | char *p; |
802188a7 | 4356 | |
2e9f7625 | 4357 | p = rs->buf; |
96baa820 JM |
4358 | *p++ = 'X'; |
4359 | p += hexnumstr (p, (ULONGEST) addr); | |
4360 | *p++ = ','; | |
4361 | p += hexnumstr (p, (ULONGEST) 0); | |
4362 | *p++ = ':'; | |
4363 | *p = '\0'; | |
802188a7 | 4364 | |
2e9f7625 | 4365 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 4366 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 4367 | |
2e9f7625 | 4368 | if (rs->buf[0] == '\0') |
96baa820 JM |
4369 | { |
4370 | if (remote_debug) | |
4371 | fprintf_unfiltered (gdb_stdlog, | |
4372 | "binary downloading NOT suppported by target\n"); | |
444abaca | 4373 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
4374 | } |
4375 | else | |
4376 | { | |
4377 | if (remote_debug) | |
4378 | fprintf_unfiltered (gdb_stdlog, | |
4379 | "binary downloading suppported by target\n"); | |
444abaca | 4380 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
4381 | } |
4382 | break; | |
4383 | } | |
c906108c SS |
4384 | } |
4385 | } | |
4386 | ||
4387 | /* Write memory data directly to the remote machine. | |
4388 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 4389 | HEADER is the starting part of the packet. |
c906108c SS |
4390 | MEMADDR is the address in the remote memory space. |
4391 | MYADDR is the address of the buffer in our space. | |
4392 | LEN is the number of bytes. | |
a76d924d DJ |
4393 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
4394 | should send data as binary ('X'), or hex-encoded ('M'). | |
4395 | ||
4396 | The function creates packet of the form | |
4397 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
4398 | ||
4399 | where encoding of <DATA> is termined by PACKET_FORMAT. | |
4400 | ||
4401 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
4402 | are omitted. | |
4403 | ||
4404 | Returns the number of bytes transferred, or 0 (setting errno) for | |
23860348 | 4405 | error. Only transfer a single packet. */ |
c906108c | 4406 | |
a76d924d DJ |
4407 | static int |
4408 | remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, | |
4409 | const gdb_byte *myaddr, int len, | |
4410 | char packet_format, int use_length) | |
c906108c | 4411 | { |
6d820c5c | 4412 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 4413 | char *p; |
a76d924d DJ |
4414 | char *plen = NULL; |
4415 | int plenlen = 0; | |
917317f4 JM |
4416 | int todo; |
4417 | int nr_bytes; | |
a257b5bb | 4418 | int payload_size; |
6765f3e5 | 4419 | int payload_length; |
a76d924d DJ |
4420 | int header_length; |
4421 | ||
4422 | if (packet_format != 'X' && packet_format != 'M') | |
4423 | internal_error (__FILE__, __LINE__, | |
4424 | "remote_write_bytes_aux: bad packet format"); | |
c906108c | 4425 | |
b2182ed2 DJ |
4426 | if (len <= 0) |
4427 | return 0; | |
4428 | ||
3de11b2e | 4429 | payload_size = get_memory_write_packet_size (); |
2bc416ba | 4430 | |
6d820c5c DJ |
4431 | /* The packet buffer will be large enough for the payload; |
4432 | get_memory_packet_size ensures this. */ | |
a76d924d | 4433 | rs->buf[0] = '\0'; |
c906108c | 4434 | |
a257b5bb | 4435 | /* Compute the size of the actual payload by subtracting out the |
3de11b2e NS |
4436 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". |
4437 | */ | |
a76d924d DJ |
4438 | payload_size -= strlen ("$,:#NN"); |
4439 | if (!use_length) | |
4440 | /* The comma won't be used. */ | |
4441 | payload_size += 1; | |
4442 | header_length = strlen (header); | |
4443 | payload_size -= header_length; | |
3de11b2e | 4444 | payload_size -= hexnumlen (memaddr); |
c906108c | 4445 | |
a76d924d | 4446 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 4447 | |
a76d924d DJ |
4448 | strcat (rs->buf, header); |
4449 | p = rs->buf + strlen (header); | |
4450 | ||
4451 | /* Compute a best guess of the number of bytes actually transfered. */ | |
4452 | if (packet_format == 'X') | |
c906108c | 4453 | { |
23860348 | 4454 | /* Best guess at number of bytes that will fit. */ |
a257b5bb | 4455 | todo = min (len, payload_size); |
a76d924d DJ |
4456 | if (use_length) |
4457 | payload_size -= hexnumlen (todo); | |
3de11b2e | 4458 | todo = min (todo, payload_size); |
a76d924d DJ |
4459 | } |
4460 | else | |
4461 | { | |
23860348 | 4462 | /* Num bytes that will fit. */ |
a257b5bb | 4463 | todo = min (len, payload_size / 2); |
a76d924d DJ |
4464 | if (use_length) |
4465 | payload_size -= hexnumlen (todo); | |
3de11b2e | 4466 | todo = min (todo, payload_size / 2); |
917317f4 | 4467 | } |
a76d924d | 4468 | |
3de11b2e NS |
4469 | if (todo <= 0) |
4470 | internal_error (__FILE__, __LINE__, | |
4471 | _("minumum packet size too small to write data")); | |
802188a7 | 4472 | |
6765f3e5 DJ |
4473 | /* If we already need another packet, then try to align the end |
4474 | of this packet to a useful boundary. */ | |
4475 | if (todo > 2 * REMOTE_ALIGN_WRITES && todo < len) | |
4476 | todo = ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
4477 | ||
a257b5bb | 4478 | /* Append "<memaddr>". */ |
917317f4 JM |
4479 | memaddr = remote_address_masked (memaddr); |
4480 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 4481 | |
a76d924d DJ |
4482 | if (use_length) |
4483 | { | |
4484 | /* Append ",". */ | |
4485 | *p++ = ','; | |
802188a7 | 4486 | |
a76d924d DJ |
4487 | /* Append <len>. Retain the location/size of <len>. It may need to |
4488 | be adjusted once the packet body has been created. */ | |
4489 | plen = p; | |
4490 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
4491 | p += plenlen; | |
4492 | } | |
a257b5bb AC |
4493 | |
4494 | /* Append ":". */ | |
917317f4 JM |
4495 | *p++ = ':'; |
4496 | *p = '\0'; | |
802188a7 | 4497 | |
a257b5bb | 4498 | /* Append the packet body. */ |
a76d924d | 4499 | if (packet_format == 'X') |
917317f4 | 4500 | { |
917317f4 JM |
4501 | /* Binary mode. Send target system values byte by byte, in |
4502 | increasing byte addresses. Only escape certain critical | |
4503 | characters. */ | |
6765f3e5 DJ |
4504 | payload_length = remote_escape_output (myaddr, todo, p, &nr_bytes, |
4505 | payload_size); | |
4506 | ||
4507 | /* If not all TODO bytes fit, then we'll need another packet. Make | |
9b7194bc DJ |
4508 | a second try to keep the end of the packet aligned. Don't do |
4509 | this if the packet is tiny. */ | |
4510 | if (nr_bytes < todo && nr_bytes > 2 * REMOTE_ALIGN_WRITES) | |
6765f3e5 DJ |
4511 | { |
4512 | int new_nr_bytes; | |
4513 | ||
4514 | new_nr_bytes = (((memaddr + nr_bytes) & ~(REMOTE_ALIGN_WRITES - 1)) | |
4515 | - memaddr); | |
4516 | if (new_nr_bytes != nr_bytes) | |
4517 | payload_length = remote_escape_output (myaddr, new_nr_bytes, | |
4518 | p, &nr_bytes, | |
4519 | payload_size); | |
4520 | } | |
4521 | ||
4522 | p += payload_length; | |
a76d924d | 4523 | if (use_length && nr_bytes < todo) |
c906108c | 4524 | { |
802188a7 | 4525 | /* Escape chars have filled up the buffer prematurely, |
917317f4 JM |
4526 | and we have actually sent fewer bytes than planned. |
4527 | Fix-up the length field of the packet. Use the same | |
4528 | number of characters as before. */ | |
917317f4 JM |
4529 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); |
4530 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 4531 | } |
a76d924d DJ |
4532 | } |
4533 | else | |
4534 | { | |
917317f4 JM |
4535 | /* Normal mode: Send target system values byte by byte, in |
4536 | increasing byte addresses. Each byte is encoded as a two hex | |
4537 | value. */ | |
2644f393 | 4538 | nr_bytes = bin2hex (myaddr, p, todo); |
aa6c0017 | 4539 | p += 2 * nr_bytes; |
c906108c | 4540 | } |
802188a7 | 4541 | |
2e9f7625 | 4542 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 4543 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 4544 | |
2e9f7625 | 4545 | if (rs->buf[0] == 'E') |
917317f4 JM |
4546 | { |
4547 | /* There is no correspondance between what the remote protocol | |
4548 | uses for errors and errno codes. We would like a cleaner way | |
4549 | of representing errors (big enough to include errno codes, | |
4550 | bfd_error codes, and others). But for now just return EIO. */ | |
4551 | errno = EIO; | |
4552 | return 0; | |
4553 | } | |
802188a7 | 4554 | |
23860348 MS |
4555 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send |
4556 | fewer bytes than we'd planned. */ | |
917317f4 | 4557 | return nr_bytes; |
c906108c SS |
4558 | } |
4559 | ||
a76d924d DJ |
4560 | /* Write memory data directly to the remote machine. |
4561 | This does not inform the data cache; the data cache uses this. | |
4562 | MEMADDR is the address in the remote memory space. | |
4563 | MYADDR is the address of the buffer in our space. | |
4564 | LEN is the number of bytes. | |
4565 | ||
4566 | Returns number of bytes transferred, or 0 (setting errno) for | |
4567 | error. Only transfer a single packet. */ | |
4568 | ||
4569 | int | |
4570 | remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, int len) | |
4571 | { | |
4572 | char *packet_format = 0; | |
4573 | ||
4574 | /* Check whether the target supports binary download. */ | |
4575 | check_binary_download (memaddr); | |
4576 | ||
4577 | switch (remote_protocol_packets[PACKET_X].support) | |
4578 | { | |
4579 | case PACKET_ENABLE: | |
4580 | packet_format = "X"; | |
4581 | break; | |
4582 | case PACKET_DISABLE: | |
4583 | packet_format = "M"; | |
4584 | break; | |
4585 | case PACKET_SUPPORT_UNKNOWN: | |
4586 | internal_error (__FILE__, __LINE__, | |
4587 | _("remote_write_bytes: bad internal state")); | |
4588 | default: | |
4589 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
4590 | } | |
4591 | ||
4592 | return remote_write_bytes_aux (packet_format, | |
4593 | memaddr, myaddr, len, packet_format[0], 1); | |
4594 | } | |
4595 | ||
c906108c SS |
4596 | /* Read memory data directly from the remote machine. |
4597 | This does not use the data cache; the data cache uses this. | |
4598 | MEMADDR is the address in the remote memory space. | |
4599 | MYADDR is the address of the buffer in our space. | |
4600 | LEN is the number of bytes. | |
4601 | ||
4602 | Returns number of bytes transferred, or 0 for error. */ | |
4603 | ||
917317f4 JM |
4604 | /* NOTE: cagney/1999-10-18: This function (and its siblings in other |
4605 | remote targets) shouldn't attempt to read the entire buffer. | |
4606 | Instead it should read a single packet worth of data and then | |
4607 | return the byte size of that packet to the caller. The caller (its | |
4608 | caller and its callers caller ;-) already contains code for | |
23860348 | 4609 | handling partial reads. */ |
917317f4 | 4610 | |
449092f6 | 4611 | int |
cfd77fa1 | 4612 | remote_read_bytes (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
c906108c | 4613 | { |
6d820c5c | 4614 | struct remote_state *rs = get_remote_state (); |
23860348 | 4615 | int max_buf_size; /* Max size of packet output buffer. */ |
c906108c SS |
4616 | int origlen; |
4617 | ||
b2182ed2 DJ |
4618 | if (len <= 0) |
4619 | return 0; | |
4620 | ||
11cf8741 | 4621 | max_buf_size = get_memory_read_packet_size (); |
6d820c5c DJ |
4622 | /* The packet buffer will be large enough for the payload; |
4623 | get_memory_packet_size ensures this. */ | |
c906108c SS |
4624 | |
4625 | origlen = len; | |
4626 | while (len > 0) | |
4627 | { | |
c906108c SS |
4628 | char *p; |
4629 | int todo; | |
4630 | int i; | |
4631 | ||
c5aa993b | 4632 | todo = min (len, max_buf_size / 2); /* num bytes that will fit */ |
c906108c SS |
4633 | |
4634 | /* construct "m"<memaddr>","<len>" */ | |
2e9f7625 | 4635 | /* sprintf (rs->buf, "m%lx,%x", (unsigned long) memaddr, todo); */ |
c906108c | 4636 | memaddr = remote_address_masked (memaddr); |
2e9f7625 | 4637 | p = rs->buf; |
c906108c SS |
4638 | *p++ = 'm'; |
4639 | p += hexnumstr (p, (ULONGEST) memaddr); | |
4640 | *p++ = ','; | |
4641 | p += hexnumstr (p, (ULONGEST) todo); | |
4642 | *p = '\0'; | |
4643 | ||
2e9f7625 | 4644 | putpkt (rs->buf); |
6d820c5c | 4645 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 4646 | |
2e9f7625 DJ |
4647 | if (rs->buf[0] == 'E' |
4648 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
4649 | && rs->buf[3] == '\0') | |
c906108c | 4650 | { |
23860348 MS |
4651 | /* There is no correspondance between what the remote |
4652 | protocol uses for errors and errno codes. We would like | |
4653 | a cleaner way of representing errors (big enough to | |
4654 | include errno codes, bfd_error codes, and others). But | |
4655 | for now just return EIO. */ | |
c906108c SS |
4656 | errno = EIO; |
4657 | return 0; | |
4658 | } | |
4659 | ||
c5aa993b JM |
4660 | /* Reply describes memory byte by byte, |
4661 | each byte encoded as two hex characters. */ | |
c906108c | 4662 | |
2e9f7625 | 4663 | p = rs->buf; |
30559e10 | 4664 | if ((i = hex2bin (p, myaddr, todo)) < todo) |
c906108c | 4665 | { |
30559e10 | 4666 | /* Reply is short. This means that we were able to read |
23860348 | 4667 | only part of what we wanted to. */ |
30559e10 | 4668 | return i + (origlen - len); |
c906108c SS |
4669 | } |
4670 | myaddr += todo; | |
4671 | memaddr += todo; | |
4672 | len -= todo; | |
4673 | } | |
4674 | return origlen; | |
4675 | } | |
4676 | \f | |
4677 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
23860348 MS |
4678 | transferring to or from debugger address BUFFER. Write to inferior |
4679 | if SHOULD_WRITE is nonzero. Returns length of data written or | |
4680 | read; 0 for error. TARGET is unused. */ | |
392a587b | 4681 | |
c906108c | 4682 | static int |
961cb7b5 | 4683 | remote_xfer_memory (CORE_ADDR mem_addr, gdb_byte *buffer, int mem_len, |
0a65a603 | 4684 | int should_write, struct mem_attrib *attrib, |
29e57380 | 4685 | struct target_ops *target) |
c906108c | 4686 | { |
4930751a C |
4687 | int res; |
4688 | ||
4930751a | 4689 | if (should_write) |
b2182ed2 | 4690 | res = remote_write_bytes (mem_addr, buffer, mem_len); |
4930751a | 4691 | else |
b2182ed2 | 4692 | res = remote_read_bytes (mem_addr, buffer, mem_len); |
4930751a C |
4693 | |
4694 | return res; | |
c906108c SS |
4695 | } |
4696 | ||
a76d924d DJ |
4697 | /* Sends a packet with content determined by the printf format string |
4698 | FORMAT and the remaining arguments, then gets the reply. Returns | |
4699 | whether the packet was a success, a failure, or unknown. */ | |
4700 | ||
4701 | enum packet_result | |
4702 | remote_send_printf (const char *format, ...) | |
4703 | { | |
4704 | struct remote_state *rs = get_remote_state (); | |
4705 | int max_size = get_remote_packet_size (); | |
4706 | ||
4707 | va_list ap; | |
4708 | va_start (ap, format); | |
4709 | ||
4710 | rs->buf[0] = '\0'; | |
4711 | if (vsnprintf (rs->buf, max_size, format, ap) >= max_size) | |
4712 | internal_error (__FILE__, __LINE__, "Too long remote packet."); | |
4713 | ||
4714 | if (putpkt (rs->buf) < 0) | |
4715 | error (_("Communication problem with target.")); | |
4716 | ||
4717 | rs->buf[0] = '\0'; | |
4718 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4719 | ||
4720 | return packet_check_result (rs->buf); | |
4721 | } | |
4722 | ||
4723 | static void | |
4724 | restore_remote_timeout (void *p) | |
4725 | { | |
4726 | int value = *(int *)p; | |
4727 | remote_timeout = value; | |
4728 | } | |
4729 | ||
4730 | /* Flash writing can take quite some time. We'll set | |
4731 | effectively infinite timeout for flash operations. | |
4732 | In future, we'll need to decide on a better approach. */ | |
4733 | static const int remote_flash_timeout = 1000; | |
4734 | ||
4735 | static void | |
4736 | remote_flash_erase (struct target_ops *ops, | |
4737 | ULONGEST address, LONGEST length) | |
4738 | { | |
4739 | int saved_remote_timeout = remote_timeout; | |
4740 | enum packet_result ret; | |
4741 | ||
4742 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
4743 | &saved_remote_timeout); | |
4744 | remote_timeout = remote_flash_timeout; | |
4745 | ||
4746 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
4747 | paddr (address), | |
4748 | phex (length, 4)); | |
4749 | switch (ret) | |
4750 | { | |
4751 | case PACKET_UNKNOWN: | |
4752 | error (_("Remote target does not support flash erase")); | |
4753 | case PACKET_ERROR: | |
4754 | error (_("Error erasing flash with vFlashErase packet")); | |
4755 | default: | |
4756 | break; | |
4757 | } | |
4758 | ||
4759 | do_cleanups (back_to); | |
4760 | } | |
4761 | ||
4762 | static LONGEST | |
4763 | remote_flash_write (struct target_ops *ops, | |
4764 | ULONGEST address, LONGEST length, | |
4765 | const gdb_byte *data) | |
4766 | { | |
4767 | int saved_remote_timeout = remote_timeout; | |
4768 | int ret; | |
4769 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
4770 | &saved_remote_timeout); | |
4771 | ||
4772 | remote_timeout = remote_flash_timeout; | |
4773 | ret = remote_write_bytes_aux ("vFlashWrite:", address, data, length, 'X', 0); | |
4774 | do_cleanups (back_to); | |
4775 | ||
4776 | return ret; | |
4777 | } | |
4778 | ||
4779 | static void | |
4780 | remote_flash_done (struct target_ops *ops) | |
4781 | { | |
4782 | int saved_remote_timeout = remote_timeout; | |
4783 | int ret; | |
4784 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
4785 | &saved_remote_timeout); | |
4786 | ||
4787 | remote_timeout = remote_flash_timeout; | |
4788 | ret = remote_send_printf ("vFlashDone"); | |
4789 | do_cleanups (back_to); | |
4790 | ||
4791 | switch (ret) | |
4792 | { | |
4793 | case PACKET_UNKNOWN: | |
4794 | error (_("Remote target does not support vFlashDone")); | |
4795 | case PACKET_ERROR: | |
4796 | error (_("Error finishing flash operation")); | |
4797 | default: | |
4798 | break; | |
4799 | } | |
4800 | } | |
4801 | ||
c906108c | 4802 | static void |
fba45db2 | 4803 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
4804 | { |
4805 | puts_filtered ("Debugging a target over a serial line.\n"); | |
4806 | } | |
4807 | \f | |
4808 | /* Stuff for dealing with the packets which are part of this protocol. | |
4809 | See comment at top of file for details. */ | |
4810 | ||
0876f84a | 4811 | /* Read a single character from the remote end. */ |
c906108c SS |
4812 | |
4813 | static int | |
fba45db2 | 4814 | readchar (int timeout) |
c906108c SS |
4815 | { |
4816 | int ch; | |
4817 | ||
2cd58942 | 4818 | ch = serial_readchar (remote_desc, timeout); |
c906108c | 4819 | |
2acceee2 | 4820 | if (ch >= 0) |
0876f84a | 4821 | return ch; |
2acceee2 JM |
4822 | |
4823 | switch ((enum serial_rc) ch) | |
c906108c SS |
4824 | { |
4825 | case SERIAL_EOF: | |
2acceee2 | 4826 | target_mourn_inferior (); |
8a3fe4f8 | 4827 | error (_("Remote connection closed")); |
2acceee2 | 4828 | /* no return */ |
c906108c | 4829 | case SERIAL_ERROR: |
e2e0b3e5 | 4830 | perror_with_name (_("Remote communication error")); |
2acceee2 | 4831 | /* no return */ |
c906108c | 4832 | case SERIAL_TIMEOUT: |
2acceee2 | 4833 | break; |
c906108c | 4834 | } |
2acceee2 | 4835 | return ch; |
c906108c SS |
4836 | } |
4837 | ||
6d820c5c DJ |
4838 | /* Send the command in *BUF to the remote machine, and read the reply |
4839 | into *BUF. Report an error if we get an error reply. Resize | |
4840 | *BUF using xrealloc if necessary to hold the result, and update | |
4841 | *SIZEOF_BUF. */ | |
c906108c SS |
4842 | |
4843 | static void | |
6d820c5c DJ |
4844 | remote_send (char **buf, |
4845 | long *sizeof_buf) | |
c906108c | 4846 | { |
6d820c5c | 4847 | putpkt (*buf); |
c2d11a7d | 4848 | getpkt (buf, sizeof_buf, 0); |
c906108c | 4849 | |
6d820c5c DJ |
4850 | if ((*buf)[0] == 'E') |
4851 | error (_("Remote failure reply: %s"), *buf); | |
c906108c SS |
4852 | } |
4853 | ||
4854 | /* Display a null-terminated packet on stdout, for debugging, using C | |
4855 | string notation. */ | |
4856 | ||
4857 | static void | |
fba45db2 | 4858 | print_packet (char *buf) |
c906108c SS |
4859 | { |
4860 | puts_filtered ("\""); | |
43e526b9 | 4861 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
4862 | puts_filtered ("\""); |
4863 | } | |
4864 | ||
4865 | int | |
fba45db2 | 4866 | putpkt (char *buf) |
c906108c SS |
4867 | { |
4868 | return putpkt_binary (buf, strlen (buf)); | |
4869 | } | |
4870 | ||
4871 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 4872 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 4873 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
4874 | and for a possible /0 if we are debugging (remote_debug) and want |
4875 | to print the sent packet as a string. */ | |
c906108c SS |
4876 | |
4877 | static int | |
fba45db2 | 4878 | putpkt_binary (char *buf, int cnt) |
c906108c | 4879 | { |
2d717e4f | 4880 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4881 | int i; |
4882 | unsigned char csum = 0; | |
11cf8741 | 4883 | char *buf2 = alloca (cnt + 6); |
085dd6e6 | 4884 | |
c906108c SS |
4885 | int ch; |
4886 | int tcount = 0; | |
4887 | char *p; | |
4888 | ||
2d717e4f DJ |
4889 | /* We're sending out a new packet. Make sure we don't look at a |
4890 | stale cached response. */ | |
4891 | rs->cached_wait_status = 0; | |
4892 | ||
c906108c SS |
4893 | /* Copy the packet into buffer BUF2, encapsulating it |
4894 | and giving it a checksum. */ | |
4895 | ||
c906108c SS |
4896 | p = buf2; |
4897 | *p++ = '$'; | |
4898 | ||
4899 | for (i = 0; i < cnt; i++) | |
4900 | { | |
4901 | csum += buf[i]; | |
4902 | *p++ = buf[i]; | |
4903 | } | |
4904 | *p++ = '#'; | |
4905 | *p++ = tohex ((csum >> 4) & 0xf); | |
4906 | *p++ = tohex (csum & 0xf); | |
4907 | ||
4908 | /* Send it over and over until we get a positive ack. */ | |
4909 | ||
4910 | while (1) | |
4911 | { | |
4912 | int started_error_output = 0; | |
4913 | ||
4914 | if (remote_debug) | |
4915 | { | |
4916 | *p = '\0'; | |
43e526b9 JM |
4917 | fprintf_unfiltered (gdb_stdlog, "Sending packet: "); |
4918 | fputstrn_unfiltered (buf2, p - buf2, 0, gdb_stdlog); | |
d4f3574e | 4919 | fprintf_unfiltered (gdb_stdlog, "..."); |
0f71a2f6 | 4920 | gdb_flush (gdb_stdlog); |
c906108c | 4921 | } |
2cd58942 | 4922 | if (serial_write (remote_desc, buf2, p - buf2)) |
e2e0b3e5 | 4923 | perror_with_name (_("putpkt: write failed")); |
c906108c | 4924 | |
23860348 | 4925 | /* Read until either a timeout occurs (-2) or '+' is read. */ |
c906108c SS |
4926 | while (1) |
4927 | { | |
4928 | ch = readchar (remote_timeout); | |
4929 | ||
c5aa993b | 4930 | if (remote_debug) |
c906108c SS |
4931 | { |
4932 | switch (ch) | |
4933 | { | |
4934 | case '+': | |
1216fa2c | 4935 | case '-': |
c906108c SS |
4936 | case SERIAL_TIMEOUT: |
4937 | case '$': | |
4938 | if (started_error_output) | |
4939 | { | |
4940 | putchar_unfiltered ('\n'); | |
4941 | started_error_output = 0; | |
4942 | } | |
4943 | } | |
4944 | } | |
4945 | ||
4946 | switch (ch) | |
4947 | { | |
4948 | case '+': | |
4949 | if (remote_debug) | |
0f71a2f6 | 4950 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 4951 | return 1; |
1216fa2c AC |
4952 | case '-': |
4953 | if (remote_debug) | |
4954 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
c906108c | 4955 | case SERIAL_TIMEOUT: |
c5aa993b | 4956 | tcount++; |
c906108c SS |
4957 | if (tcount > 3) |
4958 | return 0; | |
23860348 | 4959 | break; /* Retransmit buffer. */ |
c906108c SS |
4960 | case '$': |
4961 | { | |
40e3f985 | 4962 | if (remote_debug) |
2bc416ba | 4963 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 4964 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
4965 | /* It's probably an old response sent because an ACK |
4966 | was lost. Gobble up the packet and ack it so it | |
4967 | doesn't get retransmitted when we resend this | |
4968 | packet. */ | |
6d820c5c | 4969 | skip_frame (); |
d6f7abdf | 4970 | serial_write (remote_desc, "+", 1); |
23860348 | 4971 | continue; /* Now, go look for +. */ |
c906108c SS |
4972 | } |
4973 | default: | |
4974 | if (remote_debug) | |
4975 | { | |
4976 | if (!started_error_output) | |
4977 | { | |
4978 | started_error_output = 1; | |
0f71a2f6 | 4979 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 4980 | } |
0f71a2f6 | 4981 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
4982 | } |
4983 | continue; | |
4984 | } | |
23860348 | 4985 | break; /* Here to retransmit. */ |
c906108c SS |
4986 | } |
4987 | ||
4988 | #if 0 | |
4989 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
4990 | able to get out next time we call QUIT, without anything as |
4991 | violent as interrupt_query. If we want to provide a way out of | |
4992 | here without getting to the next QUIT, it should be based on | |
4993 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
4994 | if (quit_flag) |
4995 | { | |
4996 | quit_flag = 0; | |
4997 | interrupt_query (); | |
4998 | } | |
4999 | #endif | |
5000 | } | |
5001 | } | |
5002 | ||
6d820c5c DJ |
5003 | /* Come here after finding the start of a frame when we expected an |
5004 | ack. Do our best to discard the rest of this packet. */ | |
5005 | ||
5006 | static void | |
5007 | skip_frame (void) | |
5008 | { | |
5009 | int c; | |
5010 | ||
5011 | while (1) | |
5012 | { | |
5013 | c = readchar (remote_timeout); | |
5014 | switch (c) | |
5015 | { | |
5016 | case SERIAL_TIMEOUT: | |
5017 | /* Nothing we can do. */ | |
5018 | return; | |
5019 | case '#': | |
5020 | /* Discard the two bytes of checksum and stop. */ | |
5021 | c = readchar (remote_timeout); | |
5022 | if (c >= 0) | |
5023 | c = readchar (remote_timeout); | |
5024 | ||
5025 | return; | |
5026 | case '*': /* Run length encoding. */ | |
5027 | /* Discard the repeat count. */ | |
5028 | c = readchar (remote_timeout); | |
5029 | if (c < 0) | |
5030 | return; | |
5031 | break; | |
5032 | default: | |
5033 | /* A regular character. */ | |
5034 | break; | |
5035 | } | |
5036 | } | |
5037 | } | |
5038 | ||
c906108c | 5039 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
5040 | into *BUF, verifying the checksum, length, and handling run-length |
5041 | compression. NUL terminate the buffer. If there is not enough room, | |
5042 | expand *BUF using xrealloc. | |
c906108c | 5043 | |
c2d11a7d JM |
5044 | Returns -1 on error, number of characters in buffer (ignoring the |
5045 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 5046 | SERIAL status indications). */ |
c2d11a7d JM |
5047 | |
5048 | static long | |
6d820c5c DJ |
5049 | read_frame (char **buf_p, |
5050 | long *sizeof_buf) | |
c906108c SS |
5051 | { |
5052 | unsigned char csum; | |
c2d11a7d | 5053 | long bc; |
c906108c | 5054 | int c; |
6d820c5c | 5055 | char *buf = *buf_p; |
c906108c SS |
5056 | |
5057 | csum = 0; | |
c2d11a7d | 5058 | bc = 0; |
c906108c SS |
5059 | |
5060 | while (1) | |
5061 | { | |
5062 | c = readchar (remote_timeout); | |
c906108c SS |
5063 | switch (c) |
5064 | { | |
5065 | case SERIAL_TIMEOUT: | |
5066 | if (remote_debug) | |
0f71a2f6 | 5067 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 5068 | return -1; |
c906108c SS |
5069 | case '$': |
5070 | if (remote_debug) | |
0f71a2f6 JM |
5071 | fputs_filtered ("Saw new packet start in middle of old one\n", |
5072 | gdb_stdlog); | |
23860348 | 5073 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
5074 | case '#': |
5075 | { | |
5076 | unsigned char pktcsum; | |
e1b09194 AC |
5077 | int check_0 = 0; |
5078 | int check_1 = 0; | |
c906108c | 5079 | |
c2d11a7d | 5080 | buf[bc] = '\0'; |
c906108c | 5081 | |
e1b09194 AC |
5082 | check_0 = readchar (remote_timeout); |
5083 | if (check_0 >= 0) | |
5084 | check_1 = readchar (remote_timeout); | |
802188a7 | 5085 | |
e1b09194 AC |
5086 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
5087 | { | |
5088 | if (remote_debug) | |
2bc416ba | 5089 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 5090 | gdb_stdlog); |
e1b09194 AC |
5091 | return -1; |
5092 | } | |
5093 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
5094 | { |
5095 | if (remote_debug) | |
2bc416ba | 5096 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 5097 | gdb_stdlog); |
40e3f985 FN |
5098 | return -1; |
5099 | } | |
c906108c | 5100 | |
e1b09194 | 5101 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 5102 | if (csum == pktcsum) |
c2d11a7d | 5103 | return bc; |
c906108c | 5104 | |
c5aa993b | 5105 | if (remote_debug) |
c906108c | 5106 | { |
0f71a2f6 | 5107 | fprintf_filtered (gdb_stdlog, |
c5aa993b | 5108 | "Bad checksum, sentsum=0x%x, csum=0x%x, buf=", |
0f71a2f6 | 5109 | pktcsum, csum); |
0876f84a | 5110 | fputstrn_filtered (buf, bc, 0, gdb_stdlog); |
0f71a2f6 | 5111 | fputs_filtered ("\n", gdb_stdlog); |
c906108c | 5112 | } |
c2d11a7d | 5113 | /* Number of characters in buffer ignoring trailing |
23860348 | 5114 | NULL. */ |
c2d11a7d | 5115 | return -1; |
c906108c | 5116 | } |
23860348 | 5117 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
5118 | { |
5119 | int repeat; | |
5120 | csum += c; | |
c906108c | 5121 | |
b4501125 AC |
5122 | c = readchar (remote_timeout); |
5123 | csum += c; | |
23860348 | 5124 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 5125 | |
23860348 | 5126 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 5127 | |
6d820c5c | 5128 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 5129 | { |
6d820c5c DJ |
5130 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
5131 | { | |
5132 | /* Make some more room in the buffer. */ | |
5133 | *sizeof_buf += repeat; | |
5134 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
5135 | buf = *buf_p; | |
5136 | } | |
5137 | ||
c2d11a7d JM |
5138 | memset (&buf[bc], buf[bc - 1], repeat); |
5139 | bc += repeat; | |
c2c6d25f JM |
5140 | continue; |
5141 | } | |
5142 | ||
c2d11a7d | 5143 | buf[bc] = '\0'; |
6d820c5c | 5144 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 5145 | return -1; |
c2c6d25f | 5146 | } |
c906108c | 5147 | default: |
6d820c5c | 5148 | if (bc >= *sizeof_buf - 1) |
c906108c | 5149 | { |
6d820c5c DJ |
5150 | /* Make some more room in the buffer. */ |
5151 | *sizeof_buf *= 2; | |
5152 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
5153 | buf = *buf_p; | |
c906108c SS |
5154 | } |
5155 | ||
6d820c5c DJ |
5156 | buf[bc++] = c; |
5157 | csum += c; | |
5158 | continue; | |
c906108c SS |
5159 | } |
5160 | } | |
5161 | } | |
5162 | ||
5163 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
5164 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
5165 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
5166 | rather than timing out; this is used (in synchronous mode) to wait | |
5167 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
5168 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
5169 | don't have to change all the calls to getpkt to deal with the | |
5170 | return value, because at the moment I don't know what the right | |
23860348 | 5171 | thing to do it for those. */ |
c906108c | 5172 | void |
6d820c5c DJ |
5173 | getpkt (char **buf, |
5174 | long *sizeof_buf, | |
c2d11a7d | 5175 | int forever) |
d9fcf2fb JM |
5176 | { |
5177 | int timed_out; | |
5178 | ||
5179 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
5180 | } | |
5181 | ||
5182 | ||
5183 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
5184 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
5185 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
5186 | rather than timing out; this is used (in synchronous mode) to wait | |
5187 | for a target that is is executing user code to stop. If FOREVER == | |
5188 | 0, this function is allowed to time out gracefully and return an | |
0876f84a DJ |
5189 | indication of this to the caller. Otherwise return the number |
5190 | of bytes read. */ | |
3172dc30 | 5191 | static int |
6d820c5c | 5192 | getpkt_sane (char **buf, long *sizeof_buf, int forever) |
c906108c | 5193 | { |
2d717e4f | 5194 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
5195 | int c; |
5196 | int tries; | |
5197 | int timeout; | |
5198 | int val; | |
5199 | ||
2d717e4f DJ |
5200 | /* We're reading a new response. Make sure we don't look at a |
5201 | previously cached response. */ | |
5202 | rs->cached_wait_status = 0; | |
5203 | ||
6d820c5c | 5204 | strcpy (*buf, "timeout"); |
c906108c SS |
5205 | |
5206 | if (forever) | |
5207 | { | |
c906108c | 5208 | timeout = watchdog > 0 ? watchdog : -1; |
c906108c SS |
5209 | } |
5210 | ||
5211 | else | |
5212 | timeout = remote_timeout; | |
5213 | ||
5214 | #define MAX_TRIES 3 | |
5215 | ||
5216 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
5217 | { | |
5218 | /* This can loop forever if the remote side sends us characters | |
23860348 MS |
5219 | continuously, but if it pauses, we'll get a zero from |
5220 | readchar because of timeout. Then we'll count that as a | |
5221 | retry. */ | |
c906108c | 5222 | |
23860348 MS |
5223 | /* Note that we will only wait forever prior to the start of a |
5224 | packet. After that, we expect characters to arrive at a | |
5225 | brisk pace. They should show up within remote_timeout | |
5226 | intervals. */ | |
c906108c SS |
5227 | |
5228 | do | |
5229 | { | |
5230 | c = readchar (timeout); | |
5231 | ||
5232 | if (c == SERIAL_TIMEOUT) | |
5233 | { | |
23860348 | 5234 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 5235 | { |
2acceee2 | 5236 | QUIT; |
c906108c | 5237 | target_mourn_inferior (); |
489eaeba | 5238 | error (_("Watchdog timeout has expired. Target detached.")); |
c906108c | 5239 | } |
c906108c | 5240 | if (remote_debug) |
0f71a2f6 | 5241 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c SS |
5242 | goto retry; |
5243 | } | |
5244 | } | |
5245 | while (c != '$'); | |
5246 | ||
5247 | /* We've found the start of a packet, now collect the data. */ | |
5248 | ||
c2d11a7d | 5249 | val = read_frame (buf, sizeof_buf); |
c906108c | 5250 | |
c2d11a7d | 5251 | if (val >= 0) |
c906108c SS |
5252 | { |
5253 | if (remote_debug) | |
43e526b9 JM |
5254 | { |
5255 | fprintf_unfiltered (gdb_stdlog, "Packet received: "); | |
0876f84a | 5256 | fputstrn_unfiltered (*buf, val, 0, gdb_stdlog); |
43e526b9 JM |
5257 | fprintf_unfiltered (gdb_stdlog, "\n"); |
5258 | } | |
2cd58942 | 5259 | serial_write (remote_desc, "+", 1); |
0876f84a | 5260 | return val; |
c906108c SS |
5261 | } |
5262 | ||
5263 | /* Try the whole thing again. */ | |
5264 | retry: | |
2cd58942 | 5265 | serial_write (remote_desc, "-", 1); |
c906108c SS |
5266 | } |
5267 | ||
2bc416ba | 5268 | /* We have tried hard enough, and just can't receive the packet. |
23860348 | 5269 | Give up. */ |
c906108c | 5270 | |
a3f17187 | 5271 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); |
2cd58942 | 5272 | serial_write (remote_desc, "+", 1); |
0876f84a | 5273 | return -1; |
c906108c SS |
5274 | } |
5275 | \f | |
5276 | static void | |
fba45db2 | 5277 | remote_kill (void) |
c906108c | 5278 | { |
c906108c SS |
5279 | /* Use catch_errors so the user can quit from gdb even when we aren't on |
5280 | speaking terms with the remote system. */ | |
c5aa993b | 5281 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
c906108c SS |
5282 | |
5283 | /* Don't wait for it to die. I'm not really sure it matters whether | |
5284 | we do or not. For the existing stubs, kill is a noop. */ | |
5285 | target_mourn_inferior (); | |
5286 | } | |
5287 | ||
23860348 | 5288 | /* Async version of remote_kill. */ |
43ff13b4 | 5289 | static void |
fba45db2 | 5290 | remote_async_kill (void) |
43ff13b4 | 5291 | { |
23860348 | 5292 | /* Unregister the file descriptor from the event loop. */ |
ed9a39eb | 5293 | if (target_is_async_p ()) |
2cd58942 | 5294 | serial_async (remote_desc, NULL, 0); |
43ff13b4 | 5295 | |
23860348 MS |
5296 | /* Use catch_errors so the user can quit from gdb even when we |
5297 | aren't on speaking terms with the remote system. */ | |
c5aa993b | 5298 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
5299 | |
5300 | /* Don't wait for it to die. I'm not really sure it matters whether | |
5301 | we do or not. For the existing stubs, kill is a noop. */ | |
5302 | target_mourn_inferior (); | |
5303 | } | |
5304 | ||
c906108c | 5305 | static void |
fba45db2 | 5306 | remote_mourn (void) |
c906108c SS |
5307 | { |
5308 | remote_mourn_1 (&remote_ops); | |
5309 | } | |
5310 | ||
53a5351d | 5311 | static void |
fba45db2 | 5312 | remote_async_mourn (void) |
53a5351d JM |
5313 | { |
5314 | remote_mourn_1 (&remote_async_ops); | |
5315 | } | |
5316 | ||
c906108c SS |
5317 | /* Worker function for remote_mourn. */ |
5318 | static void | |
fba45db2 | 5319 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
5320 | { |
5321 | unpush_target (target); | |
5322 | generic_mourn_inferior (); | |
5323 | } | |
5324 | ||
2d717e4f DJ |
5325 | static void |
5326 | extended_remote_mourn_1 (struct target_ops *target) | |
5327 | { | |
5328 | struct remote_state *rs = get_remote_state (); | |
c906108c | 5329 | |
2d717e4f DJ |
5330 | /* Unlike "target remote", we do not want to unpush the target; then |
5331 | the next time the user says "run", we won't be connected. */ | |
5332 | ||
5333 | /* Call common code to mark the inferior as not running. */ | |
5334 | generic_mourn_inferior (); | |
5335 | ||
5336 | /* Check whether the target is running now - some remote stubs | |
5337 | automatically restart after kill. */ | |
5338 | putpkt ("?"); | |
5339 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5340 | ||
5341 | if (rs->buf[0] == 'S' || rs->buf[0] == 'T') | |
5342 | { | |
5343 | /* Assume that the target has been restarted. Set inferior_ptid | |
5344 | so that bits of core GDB realizes there's something here, e.g., | |
5345 | so that the user can say "kill" again. */ | |
5346 | inferior_ptid = pid_to_ptid (MAGIC_NULL_PID); | |
5347 | } | |
5348 | else | |
5349 | { | |
5350 | /* Mark this (still pushed) target as not executable until we | |
5351 | restart it. */ | |
5352 | target_mark_exited (target); | |
5353 | } | |
5354 | } | |
c906108c SS |
5355 | |
5356 | static void | |
2d717e4f | 5357 | extended_remote_mourn (void) |
c906108c | 5358 | { |
2d717e4f DJ |
5359 | extended_remote_mourn_1 (&extended_remote_ops); |
5360 | } | |
c906108c | 5361 | |
2d717e4f DJ |
5362 | static void |
5363 | extended_async_remote_mourn (void) | |
5364 | { | |
5365 | extended_remote_mourn_1 (&extended_async_remote_ops); | |
5366 | } | |
5367 | ||
5368 | static int | |
5369 | extended_remote_run (char *args) | |
5370 | { | |
5371 | struct remote_state *rs = get_remote_state (); | |
5372 | char *p; | |
5373 | int len; | |
c906108c | 5374 | |
2d717e4f DJ |
5375 | /* If the user has disabled vRun support, or we have detected that |
5376 | support is not available, do not try it. */ | |
5377 | if (remote_protocol_packets[PACKET_vRun].support == PACKET_DISABLE) | |
5378 | return -1; | |
424163ea | 5379 | |
2d717e4f DJ |
5380 | strcpy (rs->buf, "vRun;"); |
5381 | len = strlen (rs->buf); | |
c906108c | 5382 | |
2d717e4f DJ |
5383 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
5384 | error (_("Remote file name too long for run packet")); | |
5385 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf + len, 0); | |
5386 | ||
5387 | if (*args) | |
5388 | { | |
5389 | struct cleanup *back_to; | |
5390 | int i; | |
5391 | char **argv; | |
5392 | ||
5393 | argv = buildargv (args); | |
5394 | back_to = make_cleanup ((void (*) (void *)) freeargv, argv); | |
5395 | for (i = 0; argv[i] != NULL; i++) | |
5396 | { | |
5397 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
5398 | error (_("Argument list too long for run packet")); | |
5399 | rs->buf[len++] = ';'; | |
5400 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf + len, 0); | |
5401 | } | |
5402 | do_cleanups (back_to); | |
5403 | } | |
5404 | ||
5405 | rs->buf[len++] = '\0'; | |
5406 | ||
5407 | putpkt (rs->buf); | |
5408 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5409 | ||
5410 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun]) == PACKET_OK) | |
5411 | { | |
5412 | /* We have a wait response; we don't need it, though. All is well. */ | |
5413 | return 0; | |
5414 | } | |
5415 | else if (remote_protocol_packets[PACKET_vRun].support == PACKET_DISABLE) | |
5416 | /* It wasn't disabled before, but it is now. */ | |
5417 | return -1; | |
5418 | else | |
5419 | { | |
5420 | if (remote_exec_file[0] == '\0') | |
5421 | error (_("Running the default executable on the remote target failed; " | |
5422 | "try \"set remote exec-file\"?")); | |
5423 | else | |
5424 | error (_("Running \"%s\" on the remote target failed"), | |
5425 | remote_exec_file); | |
5426 | } | |
c906108c SS |
5427 | } |
5428 | ||
2d717e4f DJ |
5429 | /* In the extended protocol we want to be able to do things like |
5430 | "run" and have them basically work as expected. So we need | |
5431 | a special create_inferior function. We support changing the | |
5432 | executable file and the command line arguments, but not the | |
5433 | environment. */ | |
5434 | ||
43ff13b4 | 5435 | static void |
2d717e4f DJ |
5436 | extended_remote_create_inferior_1 (char *exec_file, char *args, |
5437 | char **env, int from_tty, | |
5438 | int async_p) | |
43ff13b4 | 5439 | { |
43ff13b4 | 5440 | /* If running asynchronously, register the target file descriptor |
23860348 | 5441 | with the event loop. */ |
2d717e4f | 5442 | if (async_p && target_can_async_p ()) |
2acceee2 | 5443 | target_async (inferior_event_handler, 0); |
43ff13b4 JM |
5444 | |
5445 | /* Now restart the remote server. */ | |
2d717e4f DJ |
5446 | if (extended_remote_run (args) == -1) |
5447 | { | |
5448 | /* vRun was not supported. Fail if we need it to do what the | |
5449 | user requested. */ | |
5450 | if (remote_exec_file[0]) | |
5451 | error (_("Remote target does not support \"set remote exec-file\"")); | |
5452 | if (args[0]) | |
5453 | error (_("Remote target does not support \"set args\" or run <ARGS>")); | |
43ff13b4 | 5454 | |
2d717e4f DJ |
5455 | /* Fall back to "R". */ |
5456 | extended_remote_restart (); | |
5457 | } | |
424163ea | 5458 | |
45280a52 DJ |
5459 | /* Clean up from the last time we ran, before we mark the target |
5460 | running again. This will mark breakpoints uninserted, and | |
5461 | get_offsets may insert breakpoints. */ | |
5462 | init_thread_list (); | |
5463 | init_wait_for_inferior (); | |
5464 | ||
2d717e4f | 5465 | /* Now mark the inferior as running before we do anything else. */ |
df7df359 | 5466 | attach_flag = 0; |
2d717e4f DJ |
5467 | inferior_ptid = pid_to_ptid (MAGIC_NULL_PID); |
5468 | if (async_p) | |
5469 | target_mark_running (&extended_async_remote_ops); | |
5470 | else | |
5471 | target_mark_running (&extended_remote_ops); | |
5472 | ||
5473 | /* Get updated offsets, if the stub uses qOffsets. */ | |
5474 | get_offsets (); | |
2d717e4f DJ |
5475 | } |
5476 | ||
5477 | static void | |
5478 | extended_remote_create_inferior (char *exec_file, char *args, | |
5479 | char **env, int from_tty) | |
5480 | { | |
5481 | extended_remote_create_inferior_1 (exec_file, args, env, from_tty, 0); | |
5482 | } | |
5483 | ||
5484 | static void | |
5485 | extended_remote_async_create_inferior (char *exec_file, char *args, | |
5486 | char **env, int from_tty) | |
5487 | { | |
5488 | extended_remote_create_inferior_1 (exec_file, args, env, from_tty, 1); | |
43ff13b4 | 5489 | } |
c906108c | 5490 | \f |
c5aa993b | 5491 | |
8181d85f DJ |
5492 | /* Insert a breakpoint. On targets that have software breakpoint |
5493 | support, we ask the remote target to do the work; on targets | |
5494 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c SS |
5495 | |
5496 | static int | |
8181d85f | 5497 | remote_insert_breakpoint (struct bp_target_info *bp_tgt) |
c906108c | 5498 | { |
d471ea57 AC |
5499 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
5500 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
5501 | fails, and the user has explicitly requested the Z support then | |
23860348 | 5502 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 5503 | |
444abaca | 5504 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 5505 | { |
4fff2411 JZ |
5506 | CORE_ADDR addr; |
5507 | struct remote_state *rs; | |
5508 | char *p; | |
5509 | ||
5510 | gdbarch_breakpoint_from_pc | |
5511 | (current_gdbarch, &bp_tgt->placed_address, &bp_tgt->placed_size); | |
5512 | ||
5513 | rs = get_remote_state (); | |
5514 | p = rs->buf; | |
802188a7 | 5515 | |
96baa820 JM |
5516 | *(p++) = 'Z'; |
5517 | *(p++) = '0'; | |
5518 | *(p++) = ','; | |
8181d85f DJ |
5519 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
5520 | p += hexnumstr (p, addr); | |
5521 | sprintf (p, ",%d", bp_tgt->placed_size); | |
802188a7 | 5522 | |
6d820c5c DJ |
5523 | putpkt (rs->buf); |
5524 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5525 | |
6d820c5c | 5526 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 5527 | { |
d471ea57 AC |
5528 | case PACKET_ERROR: |
5529 | return -1; | |
5530 | case PACKET_OK: | |
5531 | return 0; | |
5532 | case PACKET_UNKNOWN: | |
5533 | break; | |
96baa820 JM |
5534 | } |
5535 | } | |
c906108c | 5536 | |
8181d85f | 5537 | return memory_insert_breakpoint (bp_tgt); |
c906108c SS |
5538 | } |
5539 | ||
5540 | static int | |
8181d85f | 5541 | remote_remove_breakpoint (struct bp_target_info *bp_tgt) |
c906108c | 5542 | { |
8181d85f | 5543 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 5544 | struct remote_state *rs = get_remote_state (); |
96baa820 JM |
5545 | int bp_size; |
5546 | ||
444abaca | 5547 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 5548 | { |
6d820c5c | 5549 | char *p = rs->buf; |
802188a7 | 5550 | |
96baa820 JM |
5551 | *(p++) = 'z'; |
5552 | *(p++) = '0'; | |
5553 | *(p++) = ','; | |
5554 | ||
8181d85f DJ |
5555 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
5556 | p += hexnumstr (p, addr); | |
5557 | sprintf (p, ",%d", bp_tgt->placed_size); | |
802188a7 | 5558 | |
6d820c5c DJ |
5559 | putpkt (rs->buf); |
5560 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5561 | |
6d820c5c | 5562 | return (rs->buf[0] == 'E'); |
96baa820 JM |
5563 | } |
5564 | ||
8181d85f | 5565 | return memory_remove_breakpoint (bp_tgt); |
c906108c SS |
5566 | } |
5567 | ||
d471ea57 AC |
5568 | static int |
5569 | watchpoint_to_Z_packet (int type) | |
5570 | { | |
5571 | switch (type) | |
5572 | { | |
5573 | case hw_write: | |
bb858e6a | 5574 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
5575 | break; |
5576 | case hw_read: | |
bb858e6a | 5577 | return Z_PACKET_READ_WP; |
d471ea57 AC |
5578 | break; |
5579 | case hw_access: | |
bb858e6a | 5580 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
5581 | break; |
5582 | default: | |
8e65ff28 | 5583 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5584 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
5585 | } |
5586 | } | |
5587 | ||
3c3bea1c | 5588 | static int |
fba45db2 | 5589 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 5590 | { |
d01949b6 | 5591 | struct remote_state *rs = get_remote_state (); |
e514a9d6 | 5592 | char *p; |
d471ea57 | 5593 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 5594 | |
444abaca | 5595 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
5cffb350 | 5596 | return -1; |
802188a7 | 5597 | |
6d820c5c DJ |
5598 | sprintf (rs->buf, "Z%x,", packet); |
5599 | p = strchr (rs->buf, '\0'); | |
96baa820 JM |
5600 | addr = remote_address_masked (addr); |
5601 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 5602 | sprintf (p, ",%x", len); |
802188a7 | 5603 | |
6d820c5c DJ |
5604 | putpkt (rs->buf); |
5605 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5606 | |
6d820c5c | 5607 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
5608 | { |
5609 | case PACKET_ERROR: | |
5610 | case PACKET_UNKNOWN: | |
5611 | return -1; | |
5612 | case PACKET_OK: | |
5613 | return 0; | |
5614 | } | |
8e65ff28 | 5615 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5616 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
5617 | } |
5618 | ||
d471ea57 | 5619 | |
3c3bea1c | 5620 | static int |
fba45db2 | 5621 | remote_remove_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 5622 | { |
d01949b6 | 5623 | struct remote_state *rs = get_remote_state (); |
e514a9d6 | 5624 | char *p; |
d471ea57 AC |
5625 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
5626 | ||
444abaca | 5627 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
5cffb350 | 5628 | return -1; |
802188a7 | 5629 | |
6d820c5c DJ |
5630 | sprintf (rs->buf, "z%x,", packet); |
5631 | p = strchr (rs->buf, '\0'); | |
96baa820 JM |
5632 | addr = remote_address_masked (addr); |
5633 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 5634 | sprintf (p, ",%x", len); |
6d820c5c DJ |
5635 | putpkt (rs->buf); |
5636 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5637 | |
6d820c5c | 5638 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
5639 | { |
5640 | case PACKET_ERROR: | |
5641 | case PACKET_UNKNOWN: | |
5642 | return -1; | |
5643 | case PACKET_OK: | |
5644 | return 0; | |
5645 | } | |
8e65ff28 | 5646 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5647 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
5648 | } |
5649 | ||
3c3bea1c | 5650 | |
501eef12 AC |
5651 | int remote_hw_watchpoint_limit = -1; |
5652 | int remote_hw_breakpoint_limit = -1; | |
d471ea57 | 5653 | |
b9362cc7 | 5654 | static int |
3c3bea1c | 5655 | remote_check_watch_resources (int type, int cnt, int ot) |
96baa820 | 5656 | { |
3c3bea1c GS |
5657 | if (type == bp_hardware_breakpoint) |
5658 | { | |
5659 | if (remote_hw_breakpoint_limit == 0) | |
5660 | return 0; | |
501eef12 AC |
5661 | else if (remote_hw_breakpoint_limit < 0) |
5662 | return 1; | |
3c3bea1c GS |
5663 | else if (cnt <= remote_hw_breakpoint_limit) |
5664 | return 1; | |
5665 | } | |
5666 | else | |
5667 | { | |
5668 | if (remote_hw_watchpoint_limit == 0) | |
5669 | return 0; | |
501eef12 AC |
5670 | else if (remote_hw_watchpoint_limit < 0) |
5671 | return 1; | |
3c3bea1c GS |
5672 | else if (ot) |
5673 | return -1; | |
5674 | else if (cnt <= remote_hw_watchpoint_limit) | |
5675 | return 1; | |
5676 | } | |
5677 | return -1; | |
5678 | } | |
5679 | ||
b9362cc7 | 5680 | static int |
3c3bea1c GS |
5681 | remote_stopped_by_watchpoint (void) |
5682 | { | |
5683 | return remote_stopped_by_watchpoint_p; | |
5684 | } | |
5685 | ||
4aa7a7f5 JJ |
5686 | static int |
5687 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 5688 | { |
4aa7a7f5 | 5689 | int rc = 0; |
d983da9c | 5690 | if (remote_stopped_by_watchpoint ()) |
4aa7a7f5 JJ |
5691 | { |
5692 | *addr_p = remote_watch_data_address; | |
5693 | rc = 1; | |
5694 | } | |
5695 | ||
5696 | return rc; | |
3c3bea1c GS |
5697 | } |
5698 | ||
5699 | ||
5700 | static int | |
8181d85f | 5701 | remote_insert_hw_breakpoint (struct bp_target_info *bp_tgt) |
3c3bea1c | 5702 | { |
8181d85f | 5703 | CORE_ADDR addr; |
4fff2411 JZ |
5704 | struct remote_state *rs; |
5705 | char *p; | |
802188a7 | 5706 | |
c8189ed1 | 5707 | /* The length field should be set to the size of a breakpoint |
8181d85f | 5708 | instruction, even though we aren't inserting one ourselves. */ |
c8189ed1 | 5709 | |
3b3b875c UW |
5710 | gdbarch_breakpoint_from_pc |
5711 | (current_gdbarch, &bp_tgt->placed_address, &bp_tgt->placed_size); | |
3c3bea1c | 5712 | |
444abaca | 5713 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 5714 | return -1; |
2bc416ba | 5715 | |
4fff2411 JZ |
5716 | rs = get_remote_state (); |
5717 | p = rs->buf; | |
5718 | ||
96baa820 JM |
5719 | *(p++) = 'Z'; |
5720 | *(p++) = '1'; | |
5721 | *(p++) = ','; | |
802188a7 | 5722 | |
8181d85f | 5723 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 5724 | p += hexnumstr (p, (ULONGEST) addr); |
8181d85f | 5725 | sprintf (p, ",%x", bp_tgt->placed_size); |
96baa820 | 5726 | |
6d820c5c DJ |
5727 | putpkt (rs->buf); |
5728 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5729 | |
6d820c5c | 5730 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
5731 | { |
5732 | case PACKET_ERROR: | |
5733 | case PACKET_UNKNOWN: | |
5734 | return -1; | |
5735 | case PACKET_OK: | |
5736 | return 0; | |
5737 | } | |
8e65ff28 | 5738 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5739 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
5740 | } |
5741 | ||
d471ea57 | 5742 | |
802188a7 | 5743 | static int |
8181d85f | 5744 | remote_remove_hw_breakpoint (struct bp_target_info *bp_tgt) |
96baa820 | 5745 | { |
8181d85f | 5746 | CORE_ADDR addr; |
d01949b6 | 5747 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 5748 | char *p = rs->buf; |
c8189ed1 | 5749 | |
444abaca | 5750 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 5751 | return -1; |
802188a7 | 5752 | |
96baa820 JM |
5753 | *(p++) = 'z'; |
5754 | *(p++) = '1'; | |
5755 | *(p++) = ','; | |
802188a7 | 5756 | |
8181d85f | 5757 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 5758 | p += hexnumstr (p, (ULONGEST) addr); |
8181d85f | 5759 | sprintf (p, ",%x", bp_tgt->placed_size); |
96baa820 | 5760 | |
6d820c5c DJ |
5761 | putpkt (rs->buf); |
5762 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 5763 | |
6d820c5c | 5764 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
5765 | { |
5766 | case PACKET_ERROR: | |
5767 | case PACKET_UNKNOWN: | |
5768 | return -1; | |
5769 | case PACKET_OK: | |
5770 | return 0; | |
5771 | } | |
8e65ff28 | 5772 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5773 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 5774 | } |
96baa820 | 5775 | |
c906108c SS |
5776 | /* Some targets are only capable of doing downloads, and afterwards |
5777 | they switch to the remote serial protocol. This function provides | |
5778 | a clean way to get from the download target to the remote target. | |
5779 | It's basically just a wrapper so that we don't have to expose any | |
5780 | of the internal workings of remote.c. | |
5781 | ||
5782 | Prior to calling this routine, you should shutdown the current | |
5783 | target code, else you will get the "A program is being debugged | |
5784 | already..." message. Usually a call to pop_target() suffices. */ | |
5785 | ||
5786 | void | |
fba45db2 | 5787 | push_remote_target (char *name, int from_tty) |
c906108c | 5788 | { |
a3f17187 | 5789 | printf_filtered (_("Switching to remote protocol\n")); |
c906108c SS |
5790 | remote_open (name, from_tty); |
5791 | } | |
5792 | ||
23860348 | 5793 | /* Table used by the crc32 function to calcuate the checksum. */ |
c906108c | 5794 | |
c5aa993b JM |
5795 | static unsigned long crc32_table[256] = |
5796 | {0, 0}; | |
c906108c SS |
5797 | |
5798 | static unsigned long | |
fba45db2 | 5799 | crc32 (unsigned char *buf, int len, unsigned int crc) |
c906108c | 5800 | { |
c5aa993b | 5801 | if (!crc32_table[1]) |
c906108c | 5802 | { |
23860348 | 5803 | /* Initialize the CRC table and the decoding table. */ |
c906108c SS |
5804 | int i, j; |
5805 | unsigned int c; | |
5806 | ||
5807 | for (i = 0; i < 256; i++) | |
c5aa993b JM |
5808 | { |
5809 | for (c = i << 24, j = 8; j > 0; --j) | |
5810 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
5811 | crc32_table[i] = c; | |
5812 | } | |
c906108c SS |
5813 | } |
5814 | ||
5815 | while (len--) | |
5816 | { | |
5817 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |
5818 | buf++; | |
5819 | } | |
5820 | return crc; | |
5821 | } | |
5822 | ||
5823 | /* compare-sections command | |
5824 | ||
5825 | With no arguments, compares each loadable section in the exec bfd | |
5826 | with the same memory range on the target, and reports mismatches. | |
5827 | Useful for verifying the image on the target against the exec file. | |
5828 | Depends on the target understanding the new "qCRC:" request. */ | |
5829 | ||
e514a9d6 JM |
5830 | /* FIXME: cagney/1999-10-26: This command should be broken down into a |
5831 | target method (target verify memory) and generic version of the | |
5832 | actual command. This will allow other high-level code (especially | |
23860348 | 5833 | generic_load()) to make use of this target functionality. */ |
e514a9d6 | 5834 | |
c906108c | 5835 | static void |
fba45db2 | 5836 | compare_sections_command (char *args, int from_tty) |
c906108c | 5837 | { |
d01949b6 | 5838 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
5839 | asection *s; |
5840 | unsigned long host_crc, target_crc; | |
5841 | extern bfd *exec_bfd; | |
5842 | struct cleanup *old_chain; | |
085dd6e6 JM |
5843 | char *tmp; |
5844 | char *sectdata; | |
ce359b09 | 5845 | const char *sectname; |
c906108c SS |
5846 | bfd_size_type size; |
5847 | bfd_vma lma; | |
5848 | int matched = 0; | |
5849 | int mismatched = 0; | |
5850 | ||
5851 | if (!exec_bfd) | |
8a3fe4f8 | 5852 | error (_("command cannot be used without an exec file")); |
c906108c SS |
5853 | if (!current_target.to_shortname || |
5854 | strcmp (current_target.to_shortname, "remote") != 0) | |
8a3fe4f8 | 5855 | error (_("command can only be used with remote target")); |
c906108c | 5856 | |
c5aa993b | 5857 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
5858 | { |
5859 | if (!(s->flags & SEC_LOAD)) | |
c5aa993b | 5860 | continue; /* skip non-loadable section */ |
c906108c | 5861 | |
2c500098 | 5862 | size = bfd_get_section_size (s); |
c906108c | 5863 | if (size == 0) |
c5aa993b | 5864 | continue; /* skip zero-length section */ |
c906108c | 5865 | |
ce359b09 | 5866 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 5867 | if (args && strcmp (args, sectname) != 0) |
c5aa993b | 5868 | continue; /* not the section selected by user */ |
c906108c | 5869 | |
c5aa993b | 5870 | matched = 1; /* do this section */ |
c906108c | 5871 | lma = s->lma; |
23860348 | 5872 | /* FIXME: assumes lma can fit into long. */ |
ea9c271d | 5873 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", |
ecbc58df | 5874 | (long) lma, (long) size); |
6d820c5c | 5875 | putpkt (rs->buf); |
c906108c | 5876 | |
23860348 MS |
5877 | /* Be clever; compute the host_crc before waiting for target |
5878 | reply. */ | |
c906108c | 5879 | sectdata = xmalloc (size); |
b8c9b27d | 5880 | old_chain = make_cleanup (xfree, sectdata); |
c906108c SS |
5881 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
5882 | host_crc = crc32 ((unsigned char *) sectdata, size, 0xffffffff); | |
5883 | ||
6d820c5c DJ |
5884 | getpkt (&rs->buf, &rs->buf_size, 0); |
5885 | if (rs->buf[0] == 'E') | |
8a3fe4f8 | 5886 | error (_("target memory fault, section %s, range 0x%s -- 0x%s"), |
823ca731 | 5887 | sectname, paddr (lma), paddr (lma + size)); |
6d820c5c | 5888 | if (rs->buf[0] != 'C') |
8a3fe4f8 | 5889 | error (_("remote target does not support this operation")); |
c906108c | 5890 | |
6d820c5c | 5891 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) |
c906108c SS |
5892 | target_crc = target_crc * 16 + fromhex (*tmp); |
5893 | ||
d4f3574e SS |
5894 | printf_filtered ("Section %s, range 0x%s -- 0x%s: ", |
5895 | sectname, paddr (lma), paddr (lma + size)); | |
c906108c SS |
5896 | if (host_crc == target_crc) |
5897 | printf_filtered ("matched.\n"); | |
5898 | else | |
c5aa993b JM |
5899 | { |
5900 | printf_filtered ("MIS-MATCHED!\n"); | |
5901 | mismatched++; | |
5902 | } | |
c906108c SS |
5903 | |
5904 | do_cleanups (old_chain); | |
5905 | } | |
5906 | if (mismatched > 0) | |
8a3fe4f8 AC |
5907 | warning (_("One or more sections of the remote executable does not match\n\ |
5908 | the loaded file\n")); | |
c906108c | 5909 | if (args && !matched) |
a3f17187 | 5910 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
5911 | } |
5912 | ||
0e7f50da UW |
5913 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
5914 | into remote target. The number of bytes written to the remote | |
5915 | target is returned, or -1 for error. */ | |
5916 | ||
5917 | static LONGEST | |
5918 | remote_write_qxfer (struct target_ops *ops, const char *object_name, | |
5919 | const char *annex, const gdb_byte *writebuf, | |
5920 | ULONGEST offset, LONGEST len, | |
5921 | struct packet_config *packet) | |
5922 | { | |
5923 | int i, buf_len; | |
5924 | ULONGEST n; | |
5925 | gdb_byte *wbuf; | |
5926 | struct remote_state *rs = get_remote_state (); | |
5927 | int max_size = get_memory_write_packet_size (); | |
5928 | ||
5929 | if (packet->support == PACKET_DISABLE) | |
5930 | return -1; | |
5931 | ||
5932 | /* Insert header. */ | |
5933 | i = snprintf (rs->buf, max_size, | |
5934 | "qXfer:%s:write:%s:%s:", | |
5935 | object_name, annex ? annex : "", | |
5936 | phex_nz (offset, sizeof offset)); | |
5937 | max_size -= (i + 1); | |
5938 | ||
5939 | /* Escape as much data as fits into rs->buf. */ | |
5940 | buf_len = remote_escape_output | |
5941 | (writebuf, len, (rs->buf + i), &max_size, max_size); | |
5942 | ||
5943 | if (putpkt_binary (rs->buf, i + buf_len) < 0 | |
5944 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
5945 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
5946 | return -1; | |
5947 | ||
5948 | unpack_varlen_hex (rs->buf, &n); | |
5949 | return n; | |
5950 | } | |
5951 | ||
0876f84a DJ |
5952 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
5953 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
5954 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
5955 | The number of bytes read may be less than LEN without indicating an | |
5956 | EOF. PACKET is checked and updated to indicate whether the remote | |
5957 | target supports this object. */ | |
5958 | ||
5959 | static LONGEST | |
5960 | remote_read_qxfer (struct target_ops *ops, const char *object_name, | |
5961 | const char *annex, | |
5962 | gdb_byte *readbuf, ULONGEST offset, LONGEST len, | |
5963 | struct packet_config *packet) | |
5964 | { | |
5965 | static char *finished_object; | |
5966 | static char *finished_annex; | |
5967 | static ULONGEST finished_offset; | |
5968 | ||
5969 | struct remote_state *rs = get_remote_state (); | |
5970 | unsigned int total = 0; | |
5971 | LONGEST i, n, packet_len; | |
5972 | ||
5973 | if (packet->support == PACKET_DISABLE) | |
5974 | return -1; | |
5975 | ||
5976 | /* Check whether we've cached an end-of-object packet that matches | |
5977 | this request. */ | |
5978 | if (finished_object) | |
5979 | { | |
5980 | if (strcmp (object_name, finished_object) == 0 | |
5981 | && strcmp (annex ? annex : "", finished_annex) == 0 | |
5982 | && offset == finished_offset) | |
5983 | return 0; | |
5984 | ||
5985 | /* Otherwise, we're now reading something different. Discard | |
5986 | the cache. */ | |
5987 | xfree (finished_object); | |
5988 | xfree (finished_annex); | |
5989 | finished_object = NULL; | |
5990 | finished_annex = NULL; | |
5991 | } | |
5992 | ||
5993 | /* Request only enough to fit in a single packet. The actual data | |
5994 | may not, since we don't know how much of it will need to be escaped; | |
5995 | the target is free to respond with slightly less data. We subtract | |
5996 | five to account for the response type and the protocol frame. */ | |
5997 | n = min (get_remote_packet_size () - 5, len); | |
5998 | snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s", | |
5999 | object_name, annex ? annex : "", | |
6000 | phex_nz (offset, sizeof offset), | |
6001 | phex_nz (n, sizeof n)); | |
6002 | i = putpkt (rs->buf); | |
6003 | if (i < 0) | |
6004 | return -1; | |
6005 | ||
6006 | rs->buf[0] = '\0'; | |
6007 | packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
6008 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) | |
6009 | return -1; | |
6010 | ||
6011 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
6012 | error (_("Unknown remote qXfer reply: %s"), rs->buf); | |
6013 | ||
6014 | /* 'm' means there is (or at least might be) more data after this | |
6015 | batch. That does not make sense unless there's at least one byte | |
6016 | of data in this reply. */ | |
6017 | if (rs->buf[0] == 'm' && packet_len == 1) | |
6018 | error (_("Remote qXfer reply contained no data.")); | |
6019 | ||
6020 | /* Got some data. */ | |
6021 | i = remote_unescape_input (rs->buf + 1, packet_len - 1, readbuf, n); | |
6022 | ||
6023 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
6024 | or possibly empty. If we have the final block of a non-empty |
6025 | object, record this fact to bypass a subsequent partial read. */ | |
6026 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a DJ |
6027 | { |
6028 | finished_object = xstrdup (object_name); | |
6029 | finished_annex = xstrdup (annex ? annex : ""); | |
6030 | finished_offset = offset + i; | |
6031 | } | |
6032 | ||
6033 | return i; | |
6034 | } | |
6035 | ||
1e3ff5ad | 6036 | static LONGEST |
4b8a223f | 6037 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
961cb7b5 MK |
6038 | const char *annex, gdb_byte *readbuf, |
6039 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
c906108c | 6040 | { |
d01949b6 | 6041 | struct remote_state *rs = get_remote_state (); |
c906108c | 6042 | int i; |
6d820c5c | 6043 | char *p2; |
1e3ff5ad | 6044 | char query_type; |
c906108c | 6045 | |
b2182ed2 | 6046 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
6047 | if (object == TARGET_OBJECT_MEMORY) |
6048 | { | |
6049 | int xfered; | |
6050 | errno = 0; | |
6051 | ||
2d717e4f DJ |
6052 | /* If the remote target is connected but not running, we should |
6053 | pass this request down to a lower stratum (e.g. the executable | |
6054 | file). */ | |
6055 | if (!target_has_execution) | |
6056 | return 0; | |
6057 | ||
21e3b9b9 | 6058 | if (writebuf != NULL) |
b2182ed2 | 6059 | xfered = remote_write_bytes (offset, writebuf, len); |
21e3b9b9 | 6060 | else |
b2182ed2 | 6061 | xfered = remote_read_bytes (offset, readbuf, len); |
21e3b9b9 DJ |
6062 | |
6063 | if (xfered > 0) | |
6064 | return xfered; | |
6065 | else if (xfered == 0 && errno == 0) | |
6066 | return 0; | |
6067 | else | |
6068 | return -1; | |
6069 | } | |
6070 | ||
0e7f50da UW |
6071 | /* Handle SPU memory using qxfer packets. */ |
6072 | if (object == TARGET_OBJECT_SPU) | |
6073 | { | |
6074 | if (readbuf) | |
6075 | return remote_read_qxfer (ops, "spu", annex, readbuf, offset, len, | |
6076 | &remote_protocol_packets | |
6077 | [PACKET_qXfer_spu_read]); | |
6078 | else | |
6079 | return remote_write_qxfer (ops, "spu", annex, writebuf, offset, len, | |
6080 | &remote_protocol_packets | |
6081 | [PACKET_qXfer_spu_write]); | |
6082 | } | |
6083 | ||
a76d924d DJ |
6084 | /* Only handle flash writes. */ |
6085 | if (writebuf != NULL) | |
6086 | { | |
6087 | LONGEST xfered; | |
6088 | ||
6089 | switch (object) | |
6090 | { | |
6091 | case TARGET_OBJECT_FLASH: | |
6092 | xfered = remote_flash_write (ops, offset, len, writebuf); | |
6093 | ||
6094 | if (xfered > 0) | |
6095 | return xfered; | |
6096 | else if (xfered == 0 && errno == 0) | |
6097 | return 0; | |
6098 | else | |
6099 | return -1; | |
6100 | ||
6101 | default: | |
6102 | return -1; | |
6103 | } | |
6104 | } | |
4b8a223f | 6105 | |
1e3ff5ad AC |
6106 | /* Map pre-existing objects onto letters. DO NOT do this for new |
6107 | objects!!! Instead specify new query packets. */ | |
6108 | switch (object) | |
c906108c | 6109 | { |
1e3ff5ad AC |
6110 | case TARGET_OBJECT_AVR: |
6111 | query_type = 'R'; | |
6112 | break; | |
802188a7 RM |
6113 | |
6114 | case TARGET_OBJECT_AUXV: | |
0876f84a DJ |
6115 | gdb_assert (annex == NULL); |
6116 | return remote_read_qxfer (ops, "auxv", annex, readbuf, offset, len, | |
6117 | &remote_protocol_packets[PACKET_qXfer_auxv]); | |
802188a7 | 6118 | |
23181151 DJ |
6119 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
6120 | return remote_read_qxfer | |
6121 | (ops, "features", annex, readbuf, offset, len, | |
6122 | &remote_protocol_packets[PACKET_qXfer_features]); | |
6123 | ||
cfa9d6d9 DJ |
6124 | case TARGET_OBJECT_LIBRARIES: |
6125 | return remote_read_qxfer | |
6126 | (ops, "libraries", annex, readbuf, offset, len, | |
6127 | &remote_protocol_packets[PACKET_qXfer_libraries]); | |
6128 | ||
fd79ecee DJ |
6129 | case TARGET_OBJECT_MEMORY_MAP: |
6130 | gdb_assert (annex == NULL); | |
6131 | return remote_read_qxfer (ops, "memory-map", annex, readbuf, offset, len, | |
6132 | &remote_protocol_packets[PACKET_qXfer_memory_map]); | |
6133 | ||
1e3ff5ad | 6134 | default: |
c906108c SS |
6135 | return -1; |
6136 | } | |
6137 | ||
4b8a223f | 6138 | /* Note: a zero OFFSET and LEN can be used to query the minimum |
1e3ff5ad | 6139 | buffer size. */ |
4b8a223f | 6140 | if (offset == 0 && len == 0) |
ea9c271d DJ |
6141 | return (get_remote_packet_size ()); |
6142 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not | |
24b06219 | 6143 | large enough let the caller deal with it. */ |
ea9c271d | 6144 | if (len < get_remote_packet_size ()) |
1e3ff5ad | 6145 | return -1; |
ea9c271d | 6146 | len = get_remote_packet_size (); |
1e3ff5ad | 6147 | |
23860348 | 6148 | /* Except for querying the minimum buffer size, target must be open. */ |
c5aa993b | 6149 | if (!remote_desc) |
8a3fe4f8 | 6150 | error (_("remote query is only available after target open")); |
c906108c | 6151 | |
1e3ff5ad | 6152 | gdb_assert (annex != NULL); |
4b8a223f | 6153 | gdb_assert (readbuf != NULL); |
c906108c | 6154 | |
6d820c5c | 6155 | p2 = rs->buf; |
c906108c SS |
6156 | *p2++ = 'q'; |
6157 | *p2++ = query_type; | |
6158 | ||
23860348 MS |
6159 | /* We used one buffer char for the remote protocol q command and |
6160 | another for the query type. As the remote protocol encapsulation | |
6161 | uses 4 chars plus one extra in case we are debugging | |
6162 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
6163 | string. */ | |
c906108c | 6164 | i = 0; |
ea9c271d | 6165 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 6166 | { |
1e3ff5ad AC |
6167 | /* Bad caller may have sent forbidden characters. */ |
6168 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
6169 | *p2++ = annex[i]; | |
c906108c SS |
6170 | i++; |
6171 | } | |
1e3ff5ad AC |
6172 | *p2 = '\0'; |
6173 | gdb_assert (annex[i] == '\0'); | |
c906108c | 6174 | |
6d820c5c | 6175 | i = putpkt (rs->buf); |
c5aa993b JM |
6176 | if (i < 0) |
6177 | return i; | |
c906108c | 6178 | |
6d820c5c DJ |
6179 | getpkt (&rs->buf, &rs->buf_size, 0); |
6180 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 6181 | |
cfd77fa1 | 6182 | return strlen ((char *) readbuf); |
c906108c SS |
6183 | } |
6184 | ||
08388c79 DE |
6185 | static int |
6186 | remote_search_memory (struct target_ops* ops, | |
6187 | CORE_ADDR start_addr, ULONGEST search_space_len, | |
6188 | const gdb_byte *pattern, ULONGEST pattern_len, | |
6189 | CORE_ADDR *found_addrp) | |
6190 | { | |
6191 | struct remote_state *rs = get_remote_state (); | |
6192 | int max_size = get_memory_write_packet_size (); | |
6193 | struct packet_config *packet = | |
6194 | &remote_protocol_packets[PACKET_qSearch_memory]; | |
6195 | /* number of packet bytes used to encode the pattern, | |
6196 | this could be more than PATTERN_LEN due to escape characters */ | |
6197 | int escaped_pattern_len; | |
6198 | /* amount of pattern that was encodable in the packet */ | |
6199 | int used_pattern_len; | |
6200 | int i; | |
6201 | int found; | |
6202 | ULONGEST found_addr; | |
6203 | ||
6204 | /* Don't go to the target if we don't have to. | |
6205 | This is done before checking packet->support to avoid the possibility that | |
6206 | a success for this edge case means the facility works in general. */ | |
6207 | if (pattern_len > search_space_len) | |
6208 | return 0; | |
6209 | if (pattern_len == 0) | |
6210 | { | |
6211 | *found_addrp = start_addr; | |
6212 | return 1; | |
6213 | } | |
6214 | ||
6215 | /* If we already know the packet isn't supported, fall back to the simple | |
6216 | way of searching memory. */ | |
6217 | ||
6218 | if (packet->support == PACKET_DISABLE) | |
6219 | { | |
6220 | /* Target doesn't provided special support, fall back and use the | |
6221 | standard support (copy memory and do the search here). */ | |
6222 | return simple_search_memory (ops, start_addr, search_space_len, | |
6223 | pattern, pattern_len, found_addrp); | |
6224 | } | |
6225 | ||
6226 | /* Insert header. */ | |
6227 | i = snprintf (rs->buf, max_size, | |
6228 | "qSearch:memory:%s;%s;", | |
6229 | paddr_nz (start_addr), | |
6230 | phex_nz (search_space_len, sizeof (search_space_len))); | |
6231 | max_size -= (i + 1); | |
6232 | ||
6233 | /* Escape as much data as fits into rs->buf. */ | |
6234 | escaped_pattern_len = | |
6235 | remote_escape_output (pattern, pattern_len, (rs->buf + i), | |
6236 | &used_pattern_len, max_size); | |
6237 | ||
6238 | /* Bail if the pattern is too large. */ | |
6239 | if (used_pattern_len != pattern_len) | |
10e0fa18 | 6240 | error ("Pattern is too large to transmit to remote target."); |
08388c79 DE |
6241 | |
6242 | if (putpkt_binary (rs->buf, i + escaped_pattern_len) < 0 | |
6243 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
6244 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
6245 | { | |
6246 | /* The request may not have worked because the command is not | |
6247 | supported. If so, fall back to the simple way. */ | |
6248 | if (packet->support == PACKET_DISABLE) | |
6249 | { | |
6250 | return simple_search_memory (ops, start_addr, search_space_len, | |
6251 | pattern, pattern_len, found_addrp); | |
6252 | } | |
6253 | return -1; | |
6254 | } | |
6255 | ||
6256 | if (rs->buf[0] == '0') | |
6257 | found = 0; | |
6258 | else if (rs->buf[0] == '1') | |
6259 | { | |
6260 | found = 1; | |
6261 | if (rs->buf[1] != ',') | |
10e0fa18 | 6262 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
6263 | unpack_varlen_hex (rs->buf + 2, &found_addr); |
6264 | *found_addrp = found_addr; | |
6265 | } | |
6266 | else | |
10e0fa18 | 6267 | error (_("Unknown qSearch:memory reply: %s"), rs->buf); |
08388c79 DE |
6268 | |
6269 | return found; | |
6270 | } | |
6271 | ||
96baa820 JM |
6272 | static void |
6273 | remote_rcmd (char *command, | |
d9fcf2fb | 6274 | struct ui_file *outbuf) |
96baa820 | 6275 | { |
d01949b6 | 6276 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 6277 | char *p = rs->buf; |
96baa820 JM |
6278 | |
6279 | if (!remote_desc) | |
8a3fe4f8 | 6280 | error (_("remote rcmd is only available after target open")); |
96baa820 | 6281 | |
23860348 | 6282 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
6283 | if (command == NULL) |
6284 | command = ""; | |
6285 | ||
23860348 | 6286 | /* The query prefix. */ |
2e9f7625 DJ |
6287 | strcpy (rs->buf, "qRcmd,"); |
6288 | p = strchr (rs->buf, '\0'); | |
96baa820 | 6289 | |
2e9f7625 | 6290 | if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/) > get_remote_packet_size ()) |
8a3fe4f8 | 6291 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 6292 | |
23860348 | 6293 | /* Encode the actual command. */ |
cfd77fa1 | 6294 | bin2hex ((gdb_byte *) command, p, 0); |
96baa820 | 6295 | |
6d820c5c | 6296 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 6297 | error (_("Communication problem with target.")); |
96baa820 JM |
6298 | |
6299 | /* get/display the response */ | |
6300 | while (1) | |
6301 | { | |
2e9f7625 DJ |
6302 | char *buf; |
6303 | ||
23860348 | 6304 | /* XXX - see also tracepoint.c:remote_get_noisy_reply(). */ |
2e9f7625 | 6305 | rs->buf[0] = '\0'; |
6d820c5c | 6306 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 6307 | buf = rs->buf; |
96baa820 | 6308 | if (buf[0] == '\0') |
8a3fe4f8 | 6309 | error (_("Target does not support this command.")); |
96baa820 JM |
6310 | if (buf[0] == 'O' && buf[1] != 'K') |
6311 | { | |
23860348 | 6312 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
6313 | continue; |
6314 | } | |
6315 | if (strcmp (buf, "OK") == 0) | |
6316 | break; | |
7be570e7 JM |
6317 | if (strlen (buf) == 3 && buf[0] == 'E' |
6318 | && isdigit (buf[1]) && isdigit (buf[2])) | |
6319 | { | |
8a3fe4f8 | 6320 | error (_("Protocol error with Rcmd")); |
7be570e7 | 6321 | } |
96baa820 JM |
6322 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
6323 | { | |
6324 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
6325 | fputc_unfiltered (c, outbuf); | |
6326 | } | |
6327 | break; | |
6328 | } | |
6329 | } | |
6330 | ||
fd79ecee DJ |
6331 | static VEC(mem_region_s) * |
6332 | remote_memory_map (struct target_ops *ops) | |
6333 | { | |
6334 | VEC(mem_region_s) *result = NULL; | |
6335 | char *text = target_read_stralloc (¤t_target, | |
6336 | TARGET_OBJECT_MEMORY_MAP, NULL); | |
6337 | ||
6338 | if (text) | |
6339 | { | |
6340 | struct cleanup *back_to = make_cleanup (xfree, text); | |
6341 | result = parse_memory_map (text); | |
6342 | do_cleanups (back_to); | |
6343 | } | |
6344 | ||
6345 | return result; | |
6346 | } | |
6347 | ||
c906108c | 6348 | static void |
fba45db2 | 6349 | packet_command (char *args, int from_tty) |
c906108c | 6350 | { |
d01949b6 | 6351 | struct remote_state *rs = get_remote_state (); |
c906108c | 6352 | |
c5aa993b | 6353 | if (!remote_desc) |
8a3fe4f8 | 6354 | error (_("command can only be used with remote target")); |
c906108c | 6355 | |
c5aa993b | 6356 | if (!args) |
8a3fe4f8 | 6357 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
6358 | |
6359 | puts_filtered ("sending: "); | |
6360 | print_packet (args); | |
6361 | puts_filtered ("\n"); | |
6362 | putpkt (args); | |
6363 | ||
6d820c5c | 6364 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 6365 | puts_filtered ("received: "); |
6d820c5c | 6366 | print_packet (rs->buf); |
c906108c SS |
6367 | puts_filtered ("\n"); |
6368 | } | |
6369 | ||
6370 | #if 0 | |
23860348 | 6371 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 6372 | |
a14ed312 | 6373 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 6374 | |
a14ed312 | 6375 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 6376 | |
a14ed312 | 6377 | static void threadalive_test (char *cmd, int tty); |
c906108c | 6378 | |
a14ed312 | 6379 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 6380 | |
23860348 | 6381 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 6382 | |
a14ed312 | 6383 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 6384 | |
23860348 | 6385 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 6386 | |
a14ed312 | 6387 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 6388 | |
a14ed312 | 6389 | static void init_remote_threadtests (void); |
c906108c | 6390 | |
23860348 | 6391 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
6392 | |
6393 | static void | |
fba45db2 | 6394 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
6395 | { |
6396 | int sample_thread = SAMPLE_THREAD; | |
6397 | ||
a3f17187 | 6398 | printf_filtered (_("Remote threadset test\n")); |
c906108c SS |
6399 | set_thread (sample_thread, 1); |
6400 | } | |
6401 | ||
6402 | ||
6403 | static void | |
fba45db2 | 6404 | threadalive_test (char *cmd, int tty) |
c906108c SS |
6405 | { |
6406 | int sample_thread = SAMPLE_THREAD; | |
6407 | ||
39f77062 | 6408 | if (remote_thread_alive (pid_to_ptid (sample_thread))) |
c906108c SS |
6409 | printf_filtered ("PASS: Thread alive test\n"); |
6410 | else | |
6411 | printf_filtered ("FAIL: Thread alive test\n"); | |
6412 | } | |
6413 | ||
23860348 | 6414 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
6415 | |
6416 | void | |
fba45db2 | 6417 | output_threadid (char *title, threadref *ref) |
c906108c SS |
6418 | { |
6419 | char hexid[20]; | |
6420 | ||
23860348 | 6421 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
6422 | hexid[16] = 0; |
6423 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
6424 | } | |
6425 | ||
6426 | static void | |
fba45db2 | 6427 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
6428 | { |
6429 | int startflag = 1; | |
6430 | threadref nextthread; | |
6431 | int done, result_count; | |
6432 | threadref threadlist[3]; | |
6433 | ||
6434 | printf_filtered ("Remote Threadlist test\n"); | |
6435 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
6436 | &result_count, &threadlist[0])) | |
6437 | printf_filtered ("FAIL: threadlist test\n"); | |
6438 | else | |
6439 | { | |
6440 | threadref *scan = threadlist; | |
6441 | threadref *limit = scan + result_count; | |
6442 | ||
6443 | while (scan < limit) | |
6444 | output_threadid (" thread ", scan++); | |
6445 | } | |
6446 | } | |
6447 | ||
6448 | void | |
fba45db2 | 6449 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
6450 | { |
6451 | output_threadid ("Threadid: ", &info->threadid); | |
6452 | printf_filtered ("Name: %s\n ", info->shortname); | |
6453 | printf_filtered ("State: %s\n", info->display); | |
6454 | printf_filtered ("other: %s\n\n", info->more_display); | |
6455 | } | |
6456 | ||
6457 | int | |
fba45db2 | 6458 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
6459 | { |
6460 | int result; | |
6461 | int set; | |
6462 | struct gdb_ext_thread_info threadinfo; | |
6463 | ||
6464 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
6465 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
6466 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
6467 | display_thread_info (&threadinfo); | |
6468 | return result; | |
6469 | } | |
6470 | ||
6471 | static void | |
fba45db2 | 6472 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
6473 | { |
6474 | int athread = SAMPLE_THREAD; | |
6475 | threadref thread; | |
6476 | int set; | |
6477 | ||
6478 | int_to_threadref (&thread, athread); | |
6479 | printf_filtered ("Remote Threadinfo test\n"); | |
6480 | if (!get_and_display_threadinfo (&thread)) | |
6481 | printf_filtered ("FAIL cannot get thread info\n"); | |
6482 | } | |
6483 | ||
6484 | static int | |
fba45db2 | 6485 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
6486 | { |
6487 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
6488 | return get_and_display_threadinfo (ref); | |
6489 | } | |
6490 | ||
6491 | static void | |
fba45db2 | 6492 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
6493 | { |
6494 | printf_filtered ("Remote Threadlist update test\n"); | |
6495 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
6496 | } | |
6497 | ||
6498 | static void | |
6499 | init_remote_threadtests (void) | |
6500 | { | |
1bedd215 AC |
6501 | add_com ("tlist", class_obscure, threadlist_test_cmd, _("\ |
6502 | Fetch and print the remote list of thread identifiers, one pkt only")); | |
c906108c | 6503 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 6504 | _("Fetch and display info about one thread")); |
c906108c | 6505 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 6506 | _("Test setting to a different thread")); |
c906108c | 6507 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 6508 | _("Iterate through updating all remote thread info")); |
c906108c | 6509 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 6510 | _(" Remote thread alive test ")); |
c906108c SS |
6511 | } |
6512 | ||
6513 | #endif /* 0 */ | |
6514 | ||
f3fb8c85 MS |
6515 | /* Convert a thread ID to a string. Returns the string in a static |
6516 | buffer. */ | |
6517 | ||
6518 | static char * | |
39f77062 | 6519 | remote_pid_to_str (ptid_t ptid) |
f3fb8c85 | 6520 | { |
fd0a2a6f | 6521 | static char buf[32]; |
f3fb8c85 | 6522 | |
32a5b2f1 | 6523 | xsnprintf (buf, sizeof buf, "Thread %d", ptid_get_pid (ptid)); |
f3fb8c85 MS |
6524 | return buf; |
6525 | } | |
6526 | ||
38691318 KB |
6527 | /* Get the address of the thread local variable in OBJFILE which is |
6528 | stored at OFFSET within the thread local storage for thread PTID. */ | |
6529 | ||
6530 | static CORE_ADDR | |
6531 | remote_get_thread_local_address (ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
6532 | { | |
444abaca | 6533 | if (remote_protocol_packets[PACKET_qGetTLSAddr].support != PACKET_DISABLE) |
38691318 KB |
6534 | { |
6535 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 6536 | char *p = rs->buf; |
571dd617 | 6537 | enum packet_result result; |
38691318 KB |
6538 | |
6539 | strcpy (p, "qGetTLSAddr:"); | |
6540 | p += strlen (p); | |
6541 | p += hexnumstr (p, PIDGET (ptid)); | |
6542 | *p++ = ','; | |
6543 | p += hexnumstr (p, offset); | |
6544 | *p++ = ','; | |
6545 | p += hexnumstr (p, lm); | |
6546 | *p++ = '\0'; | |
6547 | ||
6d820c5c DJ |
6548 | putpkt (rs->buf); |
6549 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6550 | result = packet_ok (rs->buf, &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 6551 | if (result == PACKET_OK) |
38691318 KB |
6552 | { |
6553 | ULONGEST result; | |
6554 | ||
6d820c5c | 6555 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
6556 | return result; |
6557 | } | |
571dd617 | 6558 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
6559 | throw_error (TLS_GENERIC_ERROR, |
6560 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 6561 | else |
109c3e39 AC |
6562 | throw_error (TLS_GENERIC_ERROR, |
6563 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
6564 | } |
6565 | else | |
109c3e39 AC |
6566 | throw_error (TLS_GENERIC_ERROR, |
6567 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
6568 | /* Not reached. */ |
6569 | return 0; | |
6570 | } | |
6571 | ||
29709017 DJ |
6572 | /* Support for inferring a target description based on the current |
6573 | architecture and the size of a 'g' packet. While the 'g' packet | |
6574 | can have any size (since optional registers can be left off the | |
6575 | end), some sizes are easily recognizable given knowledge of the | |
6576 | approximate architecture. */ | |
6577 | ||
6578 | struct remote_g_packet_guess | |
6579 | { | |
6580 | int bytes; | |
6581 | const struct target_desc *tdesc; | |
6582 | }; | |
6583 | typedef struct remote_g_packet_guess remote_g_packet_guess_s; | |
6584 | DEF_VEC_O(remote_g_packet_guess_s); | |
6585 | ||
6586 | struct remote_g_packet_data | |
6587 | { | |
6588 | VEC(remote_g_packet_guess_s) *guesses; | |
6589 | }; | |
6590 | ||
6591 | static struct gdbarch_data *remote_g_packet_data_handle; | |
6592 | ||
6593 | static void * | |
6594 | remote_g_packet_data_init (struct obstack *obstack) | |
6595 | { | |
6596 | return OBSTACK_ZALLOC (obstack, struct remote_g_packet_data); | |
6597 | } | |
6598 | ||
6599 | void | |
6600 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
6601 | const struct target_desc *tdesc) | |
6602 | { | |
6603 | struct remote_g_packet_data *data | |
6604 | = gdbarch_data (gdbarch, remote_g_packet_data_handle); | |
6605 | struct remote_g_packet_guess new_guess, *guess; | |
6606 | int ix; | |
6607 | ||
6608 | gdb_assert (tdesc != NULL); | |
6609 | ||
6610 | for (ix = 0; | |
6611 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
6612 | ix++) | |
6613 | if (guess->bytes == bytes) | |
6614 | internal_error (__FILE__, __LINE__, | |
6615 | "Duplicate g packet description added for size %d", | |
6616 | bytes); | |
6617 | ||
6618 | new_guess.bytes = bytes; | |
6619 | new_guess.tdesc = tdesc; | |
6620 | VEC_safe_push (remote_g_packet_guess_s, data->guesses, &new_guess); | |
6621 | } | |
6622 | ||
6623 | static const struct target_desc * | |
6624 | remote_read_description (struct target_ops *target) | |
6625 | { | |
6626 | struct remote_g_packet_data *data | |
6627 | = gdbarch_data (current_gdbarch, remote_g_packet_data_handle); | |
6628 | ||
6629 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) | |
6630 | { | |
6631 | struct remote_g_packet_guess *guess; | |
6632 | int ix; | |
6633 | int bytes = send_g_packet (); | |
6634 | ||
6635 | for (ix = 0; | |
6636 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
6637 | ix++) | |
6638 | if (guess->bytes == bytes) | |
6639 | return guess->tdesc; | |
6640 | ||
6641 | /* We discard the g packet. A minor optimization would be to | |
6642 | hold on to it, and fill the register cache once we have selected | |
6643 | an architecture, but it's too tricky to do safely. */ | |
6644 | } | |
6645 | ||
6646 | return NULL; | |
6647 | } | |
6648 | ||
a6b151f1 DJ |
6649 | /* Remote file transfer support. This is host-initiated I/O, not |
6650 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
6651 | ||
6652 | /* If *LEFT is at least the length of STRING, copy STRING to | |
6653 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
6654 | decrease *LEFT. Otherwise raise an error. */ | |
6655 | ||
6656 | static void | |
6657 | remote_buffer_add_string (char **buffer, int *left, char *string) | |
6658 | { | |
6659 | int len = strlen (string); | |
6660 | ||
6661 | if (len > *left) | |
6662 | error (_("Packet too long for target.")); | |
6663 | ||
6664 | memcpy (*buffer, string, len); | |
6665 | *buffer += len; | |
6666 | *left -= len; | |
6667 | ||
6668 | /* NUL-terminate the buffer as a convenience, if there is | |
6669 | room. */ | |
6670 | if (*left) | |
6671 | **buffer = '\0'; | |
6672 | } | |
6673 | ||
6674 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
6675 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
6676 | decrease *LEFT. Otherwise raise an error. */ | |
6677 | ||
6678 | static void | |
6679 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
6680 | int len) | |
6681 | { | |
6682 | if (2 * len > *left) | |
6683 | error (_("Packet too long for target.")); | |
6684 | ||
6685 | bin2hex (bytes, *buffer, len); | |
6686 | *buffer += 2 * len; | |
6687 | *left -= 2 * len; | |
6688 | ||
6689 | /* NUL-terminate the buffer as a convenience, if there is | |
6690 | room. */ | |
6691 | if (*left) | |
6692 | **buffer = '\0'; | |
6693 | } | |
6694 | ||
6695 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
6696 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
6697 | decrease *LEFT. Otherwise raise an error. */ | |
6698 | ||
6699 | static void | |
6700 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
6701 | { | |
6702 | int len = hexnumlen (value); | |
6703 | ||
6704 | if (len > *left) | |
6705 | error (_("Packet too long for target.")); | |
6706 | ||
6707 | hexnumstr (*buffer, value); | |
6708 | *buffer += len; | |
6709 | *left -= len; | |
6710 | ||
6711 | /* NUL-terminate the buffer as a convenience, if there is | |
6712 | room. */ | |
6713 | if (*left) | |
6714 | **buffer = '\0'; | |
6715 | } | |
6716 | ||
6717 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
6718 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
6719 | was included, and *ATTACHMENT to point to the start of the annex | |
6720 | if any. The length of the packet isn't needed here; there may | |
6721 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
6722 | ||
6723 | Return 0 if the packet could be parsed, -1 if it could not. If | |
6724 | -1 is returned, the other variables may not be initialized. */ | |
6725 | ||
6726 | static int | |
6727 | remote_hostio_parse_result (char *buffer, int *retcode, | |
6728 | int *remote_errno, char **attachment) | |
6729 | { | |
6730 | char *p, *p2; | |
6731 | ||
6732 | *remote_errno = 0; | |
6733 | *attachment = NULL; | |
6734 | ||
6735 | if (buffer[0] != 'F') | |
6736 | return -1; | |
6737 | ||
6738 | errno = 0; | |
6739 | *retcode = strtol (&buffer[1], &p, 16); | |
6740 | if (errno != 0 || p == &buffer[1]) | |
6741 | return -1; | |
6742 | ||
6743 | /* Check for ",errno". */ | |
6744 | if (*p == ',') | |
6745 | { | |
6746 | errno = 0; | |
6747 | *remote_errno = strtol (p + 1, &p2, 16); | |
6748 | if (errno != 0 || p + 1 == p2) | |
6749 | return -1; | |
6750 | p = p2; | |
6751 | } | |
6752 | ||
6753 | /* Check for ";attachment". If there is no attachment, the | |
6754 | packet should end here. */ | |
6755 | if (*p == ';') | |
6756 | { | |
6757 | *attachment = p + 1; | |
6758 | return 0; | |
6759 | } | |
6760 | else if (*p == '\0') | |
6761 | return 0; | |
6762 | else | |
6763 | return -1; | |
6764 | } | |
6765 | ||
6766 | /* Send a prepared I/O packet to the target and read its response. | |
6767 | The prepared packet is in the global RS->BUF before this function | |
6768 | is called, and the answer is there when we return. | |
6769 | ||
6770 | COMMAND_BYTES is the length of the request to send, which may include | |
6771 | binary data. WHICH_PACKET is the packet configuration to check | |
6772 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
6773 | is set to the error number and -1 is returned. Otherwise the value | |
6774 | returned by the function is returned. | |
6775 | ||
6776 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
6777 | attachment is expected; an error will be reported if there's a | |
6778 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
6779 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
6780 | attachment's length. */ | |
6781 | ||
6782 | static int | |
6783 | remote_hostio_send_command (int command_bytes, int which_packet, | |
6784 | int *remote_errno, char **attachment, | |
6785 | int *attachment_len) | |
6786 | { | |
6787 | struct remote_state *rs = get_remote_state (); | |
6788 | int ret, bytes_read; | |
6789 | char *attachment_tmp; | |
6790 | ||
6791 | if (remote_protocol_packets[which_packet].support == PACKET_DISABLE) | |
6792 | { | |
6793 | *remote_errno = FILEIO_ENOSYS; | |
6794 | return -1; | |
6795 | } | |
6796 | ||
6797 | putpkt_binary (rs->buf, command_bytes); | |
6798 | bytes_read = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
6799 | ||
6800 | /* If it timed out, something is wrong. Don't try to parse the | |
6801 | buffer. */ | |
6802 | if (bytes_read < 0) | |
6803 | { | |
6804 | *remote_errno = FILEIO_EINVAL; | |
6805 | return -1; | |
6806 | } | |
6807 | ||
6808 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
6809 | { | |
6810 | case PACKET_ERROR: | |
6811 | *remote_errno = FILEIO_EINVAL; | |
6812 | return -1; | |
6813 | case PACKET_UNKNOWN: | |
6814 | *remote_errno = FILEIO_ENOSYS; | |
6815 | return -1; | |
6816 | case PACKET_OK: | |
6817 | break; | |
6818 | } | |
6819 | ||
6820 | if (remote_hostio_parse_result (rs->buf, &ret, remote_errno, | |
6821 | &attachment_tmp)) | |
6822 | { | |
6823 | *remote_errno = FILEIO_EINVAL; | |
6824 | return -1; | |
6825 | } | |
6826 | ||
6827 | /* Make sure we saw an attachment if and only if we expected one. */ | |
6828 | if ((attachment_tmp == NULL && attachment != NULL) | |
6829 | || (attachment_tmp != NULL && attachment == NULL)) | |
6830 | { | |
6831 | *remote_errno = FILEIO_EINVAL; | |
6832 | return -1; | |
6833 | } | |
6834 | ||
6835 | /* If an attachment was found, it must point into the packet buffer; | |
6836 | work out how many bytes there were. */ | |
6837 | if (attachment_tmp != NULL) | |
6838 | { | |
6839 | *attachment = attachment_tmp; | |
6840 | *attachment_len = bytes_read - (*attachment - rs->buf); | |
6841 | } | |
6842 | ||
6843 | return ret; | |
6844 | } | |
6845 | ||
6846 | /* Open FILENAME on the remote target, using FLAGS and MODE. Return a | |
6847 | remote file descriptor, or -1 if an error occurs (and set | |
6848 | *REMOTE_ERRNO). */ | |
6849 | ||
6850 | static int | |
6851 | remote_hostio_open (const char *filename, int flags, int mode, | |
6852 | int *remote_errno) | |
6853 | { | |
6854 | struct remote_state *rs = get_remote_state (); | |
6855 | char *p = rs->buf; | |
6856 | int left = get_remote_packet_size () - 1; | |
6857 | ||
6858 | remote_buffer_add_string (&p, &left, "vFile:open:"); | |
6859 | ||
6860 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
6861 | strlen (filename)); | |
6862 | remote_buffer_add_string (&p, &left, ","); | |
6863 | ||
6864 | remote_buffer_add_int (&p, &left, flags); | |
6865 | remote_buffer_add_string (&p, &left, ","); | |
6866 | ||
6867 | remote_buffer_add_int (&p, &left, mode); | |
6868 | ||
6869 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_open, | |
6870 | remote_errno, NULL, NULL); | |
6871 | } | |
6872 | ||
6873 | /* Write up to LEN bytes from WRITE_BUF to FD on the remote target. | |
6874 | Return the number of bytes written, or -1 if an error occurs (and | |
6875 | set *REMOTE_ERRNO). */ | |
6876 | ||
6877 | static int | |
6878 | remote_hostio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
6879 | ULONGEST offset, int *remote_errno) | |
6880 | { | |
6881 | struct remote_state *rs = get_remote_state (); | |
6882 | char *p = rs->buf; | |
6883 | int left = get_remote_packet_size (); | |
6884 | int out_len; | |
6885 | ||
6886 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); | |
6887 | ||
6888 | remote_buffer_add_int (&p, &left, fd); | |
6889 | remote_buffer_add_string (&p, &left, ","); | |
6890 | ||
6891 | remote_buffer_add_int (&p, &left, offset); | |
6892 | remote_buffer_add_string (&p, &left, ","); | |
6893 | ||
6894 | p += remote_escape_output (write_buf, len, p, &out_len, | |
6895 | get_remote_packet_size () - (p - rs->buf)); | |
6896 | ||
6897 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_pwrite, | |
6898 | remote_errno, NULL, NULL); | |
6899 | } | |
6900 | ||
6901 | /* Read up to LEN bytes FD on the remote target into READ_BUF | |
6902 | Return the number of bytes read, or -1 if an error occurs (and | |
6903 | set *REMOTE_ERRNO). */ | |
6904 | ||
6905 | static int | |
6906 | remote_hostio_pread (int fd, gdb_byte *read_buf, int len, | |
6907 | ULONGEST offset, int *remote_errno) | |
6908 | { | |
6909 | struct remote_state *rs = get_remote_state (); | |
6910 | char *p = rs->buf; | |
6911 | char *attachment; | |
6912 | int left = get_remote_packet_size (); | |
6913 | int ret, attachment_len; | |
6914 | int read_len; | |
6915 | ||
6916 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
6917 | ||
6918 | remote_buffer_add_int (&p, &left, fd); | |
6919 | remote_buffer_add_string (&p, &left, ","); | |
6920 | ||
6921 | remote_buffer_add_int (&p, &left, len); | |
6922 | remote_buffer_add_string (&p, &left, ","); | |
6923 | ||
6924 | remote_buffer_add_int (&p, &left, offset); | |
6925 | ||
6926 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_pread, | |
6927 | remote_errno, &attachment, | |
6928 | &attachment_len); | |
6929 | ||
6930 | if (ret < 0) | |
6931 | return ret; | |
6932 | ||
6933 | read_len = remote_unescape_input (attachment, attachment_len, | |
6934 | read_buf, len); | |
6935 | if (read_len != ret) | |
6936 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
6937 | ||
6938 | return ret; | |
6939 | } | |
6940 | ||
6941 | /* Close FD on the remote target. Return 0, or -1 if an error occurs | |
6942 | (and set *REMOTE_ERRNO). */ | |
6943 | ||
6944 | static int | |
6945 | remote_hostio_close (int fd, int *remote_errno) | |
6946 | { | |
6947 | struct remote_state *rs = get_remote_state (); | |
6948 | char *p = rs->buf; | |
6949 | int left = get_remote_packet_size () - 1; | |
6950 | ||
6951 | remote_buffer_add_string (&p, &left, "vFile:close:"); | |
6952 | ||
6953 | remote_buffer_add_int (&p, &left, fd); | |
6954 | ||
6955 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_close, | |
6956 | remote_errno, NULL, NULL); | |
6957 | } | |
6958 | ||
6959 | /* Unlink FILENAME on the remote target. Return 0, or -1 if an error | |
6960 | occurs (and set *REMOTE_ERRNO). */ | |
6961 | ||
6962 | static int | |
6963 | remote_hostio_unlink (const char *filename, int *remote_errno) | |
6964 | { | |
6965 | struct remote_state *rs = get_remote_state (); | |
6966 | char *p = rs->buf; | |
6967 | int left = get_remote_packet_size () - 1; | |
6968 | ||
6969 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); | |
6970 | ||
6971 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
6972 | strlen (filename)); | |
6973 | ||
6974 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_unlink, | |
6975 | remote_errno, NULL, NULL); | |
6976 | } | |
6977 | ||
6978 | static int | |
6979 | remote_fileio_errno_to_host (int errnum) | |
6980 | { | |
6981 | switch (errnum) | |
6982 | { | |
6983 | case FILEIO_EPERM: | |
6984 | return EPERM; | |
6985 | case FILEIO_ENOENT: | |
6986 | return ENOENT; | |
6987 | case FILEIO_EINTR: | |
6988 | return EINTR; | |
6989 | case FILEIO_EIO: | |
6990 | return EIO; | |
6991 | case FILEIO_EBADF: | |
6992 | return EBADF; | |
6993 | case FILEIO_EACCES: | |
6994 | return EACCES; | |
6995 | case FILEIO_EFAULT: | |
6996 | return EFAULT; | |
6997 | case FILEIO_EBUSY: | |
6998 | return EBUSY; | |
6999 | case FILEIO_EEXIST: | |
7000 | return EEXIST; | |
7001 | case FILEIO_ENODEV: | |
7002 | return ENODEV; | |
7003 | case FILEIO_ENOTDIR: | |
7004 | return ENOTDIR; | |
7005 | case FILEIO_EISDIR: | |
7006 | return EISDIR; | |
7007 | case FILEIO_EINVAL: | |
7008 | return EINVAL; | |
7009 | case FILEIO_ENFILE: | |
7010 | return ENFILE; | |
7011 | case FILEIO_EMFILE: | |
7012 | return EMFILE; | |
7013 | case FILEIO_EFBIG: | |
7014 | return EFBIG; | |
7015 | case FILEIO_ENOSPC: | |
7016 | return ENOSPC; | |
7017 | case FILEIO_ESPIPE: | |
7018 | return ESPIPE; | |
7019 | case FILEIO_EROFS: | |
7020 | return EROFS; | |
7021 | case FILEIO_ENOSYS: | |
7022 | return ENOSYS; | |
7023 | case FILEIO_ENAMETOOLONG: | |
7024 | return ENAMETOOLONG; | |
7025 | } | |
7026 | return -1; | |
7027 | } | |
7028 | ||
7029 | static char * | |
7030 | remote_hostio_error (int errnum) | |
7031 | { | |
7032 | int host_error = remote_fileio_errno_to_host (errnum); | |
7033 | ||
7034 | if (host_error == -1) | |
7035 | error (_("Unknown remote I/O error %d"), errnum); | |
7036 | else | |
7037 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
7038 | } | |
7039 | ||
7040 | static void | |
7041 | fclose_cleanup (void *file) | |
7042 | { | |
7043 | fclose (file); | |
7044 | } | |
7045 | ||
7046 | static void | |
7047 | remote_hostio_close_cleanup (void *opaque) | |
7048 | { | |
7049 | int fd = *(int *) opaque; | |
7050 | int remote_errno; | |
7051 | ||
7052 | remote_hostio_close (fd, &remote_errno); | |
7053 | } | |
7054 | ||
7055 | void | |
7056 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
7057 | { | |
7058 | struct cleanup *back_to, *close_cleanup; | |
7059 | int retcode, fd, remote_errno, bytes, io_size; | |
7060 | FILE *file; | |
7061 | gdb_byte *buffer; | |
7062 | int bytes_in_buffer; | |
7063 | int saw_eof; | |
7064 | ULONGEST offset; | |
7065 | ||
7066 | if (!remote_desc) | |
7067 | error (_("command can only be used with remote target")); | |
7068 | ||
7069 | file = fopen (local_file, "rb"); | |
7070 | if (file == NULL) | |
7071 | perror_with_name (local_file); | |
7072 | back_to = make_cleanup (fclose_cleanup, file); | |
7073 | ||
7074 | fd = remote_hostio_open (remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT | |
7075 | | FILEIO_O_TRUNC), | |
7076 | 0700, &remote_errno); | |
7077 | if (fd == -1) | |
7078 | remote_hostio_error (remote_errno); | |
7079 | ||
7080 | /* Send up to this many bytes at once. They won't all fit in the | |
7081 | remote packet limit, so we'll transfer slightly fewer. */ | |
7082 | io_size = get_remote_packet_size (); | |
7083 | buffer = xmalloc (io_size); | |
7084 | make_cleanup (xfree, buffer); | |
7085 | ||
7086 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
7087 | ||
7088 | bytes_in_buffer = 0; | |
7089 | saw_eof = 0; | |
7090 | offset = 0; | |
7091 | while (bytes_in_buffer || !saw_eof) | |
7092 | { | |
7093 | if (!saw_eof) | |
7094 | { | |
7095 | bytes = fread (buffer + bytes_in_buffer, 1, io_size - bytes_in_buffer, | |
7096 | file); | |
7097 | if (bytes == 0) | |
7098 | { | |
7099 | if (ferror (file)) | |
7100 | error (_("Error reading %s."), local_file); | |
7101 | else | |
7102 | { | |
7103 | /* EOF. Unless there is something still in the | |
7104 | buffer from the last iteration, we are done. */ | |
7105 | saw_eof = 1; | |
7106 | if (bytes_in_buffer == 0) | |
7107 | break; | |
7108 | } | |
7109 | } | |
7110 | } | |
7111 | else | |
7112 | bytes = 0; | |
7113 | ||
7114 | bytes += bytes_in_buffer; | |
7115 | bytes_in_buffer = 0; | |
7116 | ||
7117 | retcode = remote_hostio_pwrite (fd, buffer, bytes, offset, &remote_errno); | |
7118 | ||
7119 | if (retcode < 0) | |
7120 | remote_hostio_error (remote_errno); | |
7121 | else if (retcode == 0) | |
7122 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
7123 | else if (retcode < bytes) | |
7124 | { | |
7125 | /* Short write. Save the rest of the read data for the next | |
7126 | write. */ | |
7127 | bytes_in_buffer = bytes - retcode; | |
7128 | memmove (buffer, buffer + retcode, bytes_in_buffer); | |
7129 | } | |
7130 | ||
7131 | offset += retcode; | |
7132 | } | |
7133 | ||
7134 | discard_cleanups (close_cleanup); | |
7135 | if (remote_hostio_close (fd, &remote_errno)) | |
7136 | remote_hostio_error (remote_errno); | |
7137 | ||
7138 | if (from_tty) | |
7139 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
7140 | do_cleanups (back_to); | |
7141 | } | |
7142 | ||
7143 | void | |
7144 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
7145 | { | |
7146 | struct cleanup *back_to, *close_cleanup; | |
7147 | int retcode, fd, remote_errno, bytes, io_size; | |
7148 | FILE *file; | |
7149 | gdb_byte *buffer; | |
7150 | ULONGEST offset; | |
7151 | ||
7152 | if (!remote_desc) | |
7153 | error (_("command can only be used with remote target")); | |
7154 | ||
7155 | fd = remote_hostio_open (remote_file, FILEIO_O_RDONLY, 0, &remote_errno); | |
7156 | if (fd == -1) | |
7157 | remote_hostio_error (remote_errno); | |
7158 | ||
7159 | file = fopen (local_file, "wb"); | |
7160 | if (file == NULL) | |
7161 | perror_with_name (local_file); | |
7162 | back_to = make_cleanup (fclose_cleanup, file); | |
7163 | ||
7164 | /* Send up to this many bytes at once. They won't all fit in the | |
7165 | remote packet limit, so we'll transfer slightly fewer. */ | |
7166 | io_size = get_remote_packet_size (); | |
7167 | buffer = xmalloc (io_size); | |
7168 | make_cleanup (xfree, buffer); | |
7169 | ||
7170 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
7171 | ||
7172 | offset = 0; | |
7173 | while (1) | |
7174 | { | |
7175 | bytes = remote_hostio_pread (fd, buffer, io_size, offset, &remote_errno); | |
7176 | if (bytes == 0) | |
7177 | /* Success, but no bytes, means end-of-file. */ | |
7178 | break; | |
7179 | if (bytes == -1) | |
7180 | remote_hostio_error (remote_errno); | |
7181 | ||
7182 | offset += bytes; | |
7183 | ||
7184 | bytes = fwrite (buffer, 1, bytes, file); | |
7185 | if (bytes == 0) | |
7186 | perror_with_name (local_file); | |
7187 | } | |
7188 | ||
7189 | discard_cleanups (close_cleanup); | |
7190 | if (remote_hostio_close (fd, &remote_errno)) | |
7191 | remote_hostio_error (remote_errno); | |
7192 | ||
7193 | if (from_tty) | |
7194 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
7195 | do_cleanups (back_to); | |
7196 | } | |
7197 | ||
7198 | void | |
7199 | remote_file_delete (const char *remote_file, int from_tty) | |
7200 | { | |
7201 | int retcode, remote_errno; | |
7202 | ||
7203 | if (!remote_desc) | |
7204 | error (_("command can only be used with remote target")); | |
7205 | ||
7206 | retcode = remote_hostio_unlink (remote_file, &remote_errno); | |
7207 | if (retcode == -1) | |
7208 | remote_hostio_error (remote_errno); | |
7209 | ||
7210 | if (from_tty) | |
7211 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
7212 | } | |
7213 | ||
7214 | static void | |
7215 | remote_put_command (char *args, int from_tty) | |
7216 | { | |
7217 | struct cleanup *back_to; | |
7218 | char **argv; | |
7219 | ||
7220 | argv = buildargv (args); | |
7221 | if (argv == NULL) | |
7222 | nomem (0); | |
7223 | back_to = make_cleanup_freeargv (argv); | |
7224 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
7225 | error (_("Invalid parameters to remote put")); | |
7226 | ||
7227 | remote_file_put (argv[0], argv[1], from_tty); | |
7228 | ||
7229 | do_cleanups (back_to); | |
7230 | } | |
7231 | ||
7232 | static void | |
7233 | remote_get_command (char *args, int from_tty) | |
7234 | { | |
7235 | struct cleanup *back_to; | |
7236 | char **argv; | |
7237 | ||
7238 | argv = buildargv (args); | |
7239 | if (argv == NULL) | |
7240 | nomem (0); | |
7241 | back_to = make_cleanup_freeargv (argv); | |
7242 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
7243 | error (_("Invalid parameters to remote get")); | |
7244 | ||
7245 | remote_file_get (argv[0], argv[1], from_tty); | |
7246 | ||
7247 | do_cleanups (back_to); | |
7248 | } | |
7249 | ||
7250 | static void | |
7251 | remote_delete_command (char *args, int from_tty) | |
7252 | { | |
7253 | struct cleanup *back_to; | |
7254 | char **argv; | |
7255 | ||
7256 | argv = buildargv (args); | |
7257 | if (argv == NULL) | |
7258 | nomem (0); | |
7259 | back_to = make_cleanup_freeargv (argv); | |
7260 | if (argv[0] == NULL || argv[1] != NULL) | |
7261 | error (_("Invalid parameters to remote delete")); | |
7262 | ||
7263 | remote_file_delete (argv[0], from_tty); | |
7264 | ||
7265 | do_cleanups (back_to); | |
7266 | } | |
7267 | ||
7268 | static void | |
7269 | remote_command (char *args, int from_tty) | |
7270 | { | |
7271 | help_list (remote_cmdlist, "remote ", -1, gdb_stdout); | |
7272 | } | |
7273 | ||
b84876c2 PA |
7274 | static int |
7275 | remote_return_zero (void) | |
7276 | { | |
7277 | return 0; | |
7278 | } | |
7279 | ||
c906108c | 7280 | static void |
fba45db2 | 7281 | init_remote_ops (void) |
c906108c | 7282 | { |
c5aa993b | 7283 | remote_ops.to_shortname = "remote"; |
c906108c | 7284 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 7285 | remote_ops.to_doc = |
c906108c | 7286 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
7287 | Specify the serial device it is connected to\n\ |
7288 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
7289 | remote_ops.to_open = remote_open; |
7290 | remote_ops.to_close = remote_close; | |
c906108c | 7291 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 7292 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 7293 | remote_ops.to_resume = remote_resume; |
c906108c SS |
7294 | remote_ops.to_wait = remote_wait; |
7295 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
7296 | remote_ops.to_store_registers = remote_store_registers; | |
7297 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 7298 | remote_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 7299 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
7300 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
7301 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
7302 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
7303 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
7304 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; | |
7305 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
7306 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
7307 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
7308 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b JM |
7309 | remote_ops.to_kill = remote_kill; |
7310 | remote_ops.to_load = generic_load; | |
c906108c SS |
7311 | remote_ops.to_mourn_inferior = remote_mourn; |
7312 | remote_ops.to_thread_alive = remote_thread_alive; | |
0f71a2f6 | 7313 | remote_ops.to_find_new_threads = remote_threads_info; |
0caabb7e | 7314 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 7315 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
c906108c | 7316 | remote_ops.to_stop = remote_stop; |
4b8a223f | 7317 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 7318 | remote_ops.to_rcmd = remote_rcmd; |
49d03eab | 7319 | remote_ops.to_log_command = serial_log_command; |
38691318 | 7320 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; |
c906108c | 7321 | remote_ops.to_stratum = process_stratum; |
c5aa993b JM |
7322 | remote_ops.to_has_all_memory = 1; |
7323 | remote_ops.to_has_memory = 1; | |
7324 | remote_ops.to_has_stack = 1; | |
7325 | remote_ops.to_has_registers = 1; | |
7326 | remote_ops.to_has_execution = 1; | |
7327 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
7328 | remote_ops.to_magic = OPS_MAGIC; | |
fd79ecee | 7329 | remote_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
7330 | remote_ops.to_flash_erase = remote_flash_erase; |
7331 | remote_ops.to_flash_done = remote_flash_done; | |
29709017 | 7332 | remote_ops.to_read_description = remote_read_description; |
08388c79 | 7333 | remote_ops.to_search_memory = remote_search_memory; |
b84876c2 PA |
7334 | remote_ops.to_can_async_p = remote_return_zero; |
7335 | remote_ops.to_is_async_p = remote_return_zero; | |
c906108c SS |
7336 | } |
7337 | ||
7338 | /* Set up the extended remote vector by making a copy of the standard | |
7339 | remote vector and adding to it. */ | |
7340 | ||
7341 | static void | |
fba45db2 | 7342 | init_extended_remote_ops (void) |
c906108c SS |
7343 | { |
7344 | extended_remote_ops = remote_ops; | |
7345 | ||
0f71a2f6 | 7346 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 7347 | extended_remote_ops.to_longname = |
c906108c | 7348 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 7349 | extended_remote_ops.to_doc = |
c906108c | 7350 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
39237dd1 PA |
7351 | Specify the serial device it is connected to (e.g. /dev/ttya)."; |
7352 | extended_remote_ops.to_open = extended_remote_open; | |
c906108c SS |
7353 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
7354 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
2d717e4f DJ |
7355 | extended_remote_ops.to_detach = extended_remote_detach; |
7356 | extended_remote_ops.to_attach = extended_remote_attach; | |
0f71a2f6 JM |
7357 | } |
7358 | ||
6426a772 JM |
7359 | static int |
7360 | remote_can_async_p (void) | |
7361 | { | |
23860348 | 7362 | /* We're async whenever the serial device is. */ |
b84876c2 | 7363 | return remote_async_mask_value && serial_can_async_p (remote_desc); |
6426a772 JM |
7364 | } |
7365 | ||
7366 | static int | |
7367 | remote_is_async_p (void) | |
7368 | { | |
23860348 | 7369 | /* We're async whenever the serial device is. */ |
b84876c2 | 7370 | return remote_async_mask_value && serial_is_async_p (remote_desc); |
6426a772 JM |
7371 | } |
7372 | ||
2acceee2 JM |
7373 | /* Pass the SERIAL event on and up to the client. One day this code |
7374 | will be able to delay notifying the client of an event until the | |
23860348 | 7375 | point where an entire packet has been received. */ |
2acceee2 | 7376 | |
2bc416ba | 7377 | static void (*async_client_callback) (enum inferior_event_type event_type, |
23860348 | 7378 | void *context); |
2acceee2 JM |
7379 | static void *async_client_context; |
7380 | static serial_event_ftype remote_async_serial_handler; | |
7381 | ||
6426a772 | 7382 | static void |
819cc324 | 7383 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 7384 | { |
2acceee2 JM |
7385 | /* Don't propogate error information up to the client. Instead let |
7386 | the client find out about the error by querying the target. */ | |
7387 | async_client_callback (INF_REG_EVENT, async_client_context); | |
7388 | } | |
7389 | ||
7390 | static void | |
2bc416ba | 7391 | remote_async (void (*callback) (enum inferior_event_type event_type, |
23860348 | 7392 | void *context), void *context) |
2acceee2 | 7393 | { |
b84876c2 | 7394 | if (remote_async_mask_value == 0) |
8e65ff28 | 7395 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 7396 | _("Calling remote_async when async is masked")); |
ed9a39eb | 7397 | |
2acceee2 JM |
7398 | if (callback != NULL) |
7399 | { | |
2cd58942 | 7400 | serial_async (remote_desc, remote_async_serial_handler, NULL); |
2acceee2 JM |
7401 | async_client_callback = callback; |
7402 | async_client_context = context; | |
7403 | } | |
7404 | else | |
2cd58942 | 7405 | serial_async (remote_desc, NULL, NULL); |
6426a772 JM |
7406 | } |
7407 | ||
b84876c2 PA |
7408 | static int |
7409 | remote_async_mask (int new_mask) | |
7410 | { | |
7411 | int curr_mask = remote_async_mask_value; | |
7412 | remote_async_mask_value = new_mask; | |
7413 | return curr_mask; | |
7414 | } | |
7415 | ||
43ff13b4 JM |
7416 | /* Target async and target extended-async. |
7417 | ||
7418 | This are temporary targets, until it is all tested. Eventually | |
7419 | async support will be incorporated int the usual 'remote' | |
23860348 | 7420 | target. */ |
43ff13b4 JM |
7421 | |
7422 | static void | |
c2d11a7d | 7423 | init_remote_async_ops (void) |
43ff13b4 JM |
7424 | { |
7425 | remote_async_ops.to_shortname = "async"; | |
2bc416ba | 7426 | remote_async_ops.to_longname = |
23860348 | 7427 | "Remote serial target in async version of the gdb-specific protocol"; |
c5aa993b | 7428 | remote_async_ops.to_doc = |
43ff13b4 JM |
7429 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
7430 | Specify the serial device it is connected to (e.g. /dev/ttya)."; | |
c5aa993b JM |
7431 | remote_async_ops.to_open = remote_async_open; |
7432 | remote_async_ops.to_close = remote_close; | |
6ad8ae5c DJ |
7433 | remote_async_ops.to_detach = remote_detach; |
7434 | remote_async_ops.to_disconnect = remote_disconnect; | |
c5aa993b JM |
7435 | remote_async_ops.to_resume = remote_async_resume; |
7436 | remote_async_ops.to_wait = remote_async_wait; | |
7437 | remote_async_ops.to_fetch_registers = remote_fetch_registers; | |
7438 | remote_async_ops.to_store_registers = remote_store_registers; | |
7439 | remote_async_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 7440 | remote_async_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 7441 | remote_async_ops.to_files_info = remote_files_info; |
43ff13b4 JM |
7442 | remote_async_ops.to_insert_breakpoint = remote_insert_breakpoint; |
7443 | remote_async_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
7444 | remote_async_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
7445 | remote_async_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
7446 | remote_async_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
7447 | remote_async_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
7448 | remote_async_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
7449 | remote_async_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; | |
7450 | remote_async_ops.to_stopped_data_address = remote_stopped_data_address; | |
6426a772 JM |
7451 | remote_async_ops.to_terminal_inferior = remote_async_terminal_inferior; |
7452 | remote_async_ops.to_terminal_ours = remote_async_terminal_ours; | |
c5aa993b JM |
7453 | remote_async_ops.to_kill = remote_async_kill; |
7454 | remote_async_ops.to_load = generic_load; | |
53a5351d | 7455 | remote_async_ops.to_mourn_inferior = remote_async_mourn; |
c5aa993b JM |
7456 | remote_async_ops.to_thread_alive = remote_thread_alive; |
7457 | remote_async_ops.to_find_new_threads = remote_threads_info; | |
cf759d3b ND |
7458 | remote_async_ops.to_pid_to_str = remote_pid_to_str; |
7459 | remote_async_ops.to_extra_thread_info = remote_threads_extra_info; | |
43ff13b4 | 7460 | remote_async_ops.to_stop = remote_stop; |
4b8a223f | 7461 | remote_async_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 7462 | remote_async_ops.to_rcmd = remote_rcmd; |
32c1e744 VP |
7463 | remote_async_ops.to_get_thread_local_address |
7464 | = remote_get_thread_local_address; | |
c5aa993b JM |
7465 | remote_async_ops.to_stratum = process_stratum; |
7466 | remote_async_ops.to_has_all_memory = 1; | |
7467 | remote_async_ops.to_has_memory = 1; | |
7468 | remote_async_ops.to_has_stack = 1; | |
7469 | remote_async_ops.to_has_registers = 1; | |
7470 | remote_async_ops.to_has_execution = 1; | |
7471 | remote_async_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
6426a772 JM |
7472 | remote_async_ops.to_can_async_p = remote_can_async_p; |
7473 | remote_async_ops.to_is_async_p = remote_is_async_p; | |
7474 | remote_async_ops.to_async = remote_async; | |
b84876c2 | 7475 | remote_async_ops.to_async_mask = remote_async_mask; |
c5aa993b | 7476 | remote_async_ops.to_magic = OPS_MAGIC; |
fd79ecee | 7477 | remote_async_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
7478 | remote_async_ops.to_flash_erase = remote_flash_erase; |
7479 | remote_async_ops.to_flash_done = remote_flash_done; | |
cfa9d6d9 | 7480 | remote_async_ops.to_read_description = remote_read_description; |
08388c79 | 7481 | remote_async_ops.to_search_memory = remote_search_memory; |
43ff13b4 JM |
7482 | } |
7483 | ||
7484 | /* Set up the async extended remote vector by making a copy of the standard | |
7485 | remote vector and adding to it. */ | |
7486 | ||
7487 | static void | |
c2d11a7d | 7488 | init_extended_async_remote_ops (void) |
43ff13b4 JM |
7489 | { |
7490 | extended_async_remote_ops = remote_async_ops; | |
7491 | ||
7492 | extended_async_remote_ops.to_shortname = "extended-async"; | |
c5aa993b | 7493 | extended_async_remote_ops.to_longname = |
43ff13b4 | 7494 | "Extended remote serial target in async gdb-specific protocol"; |
c5aa993b | 7495 | extended_async_remote_ops.to_doc = |
43ff13b4 JM |
7496 | "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\ |
7497 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 7498 | extended_async_remote_ops.to_open = extended_remote_async_open; |
43ff13b4 | 7499 | extended_async_remote_ops.to_create_inferior = extended_remote_async_create_inferior; |
2d717e4f DJ |
7500 | extended_async_remote_ops.to_mourn_inferior = extended_async_remote_mourn; |
7501 | extended_async_remote_ops.to_detach = extended_remote_detach; | |
7502 | extended_async_remote_ops.to_attach = extended_async_remote_attach; | |
43ff13b4 JM |
7503 | } |
7504 | ||
5a2468f5 | 7505 | static void |
c2d11a7d | 7506 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 7507 | { |
427c3a89 | 7508 | help_list (remote_set_cmdlist, "set remote ", -1, gdb_stdout); |
5a2468f5 JM |
7509 | } |
7510 | ||
d471ea57 AC |
7511 | static void |
7512 | show_remote_cmd (char *args, int from_tty) | |
7513 | { | |
37a105a1 | 7514 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 7515 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 DJ |
7516 | struct cleanup *showlist_chain; |
7517 | struct cmd_list_element *list = remote_show_cmdlist; | |
7518 | ||
7519 | showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist"); | |
7520 | for (; list != NULL; list = list->next) | |
7521 | if (strcmp (list->name, "Z-packet") == 0) | |
7522 | continue; | |
427c3a89 DJ |
7523 | else if (list->type == not_set_cmd) |
7524 | /* Alias commands are exactly like the original, except they | |
7525 | don't have the normal type. */ | |
7526 | continue; | |
7527 | else | |
37a105a1 DJ |
7528 | { |
7529 | struct cleanup *option_chain | |
7530 | = make_cleanup_ui_out_tuple_begin_end (uiout, "option"); | |
7531 | ui_out_field_string (uiout, "name", list->name); | |
7532 | ui_out_text (uiout, ": "); | |
427c3a89 DJ |
7533 | if (list->type == show_cmd) |
7534 | do_setshow_command ((char *) NULL, from_tty, list); | |
7535 | else | |
7536 | cmd_func (list, NULL, from_tty); | |
37a105a1 DJ |
7537 | /* Close the tuple. */ |
7538 | do_cleanups (option_chain); | |
7539 | } | |
427c3a89 DJ |
7540 | |
7541 | /* Close the tuple. */ | |
7542 | do_cleanups (showlist_chain); | |
d471ea57 | 7543 | } |
5a2468f5 | 7544 | |
0f71a2f6 | 7545 | |
23860348 | 7546 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
7547 | static void |
7548 | remote_new_objfile (struct objfile *objfile) | |
7549 | { | |
23860348 | 7550 | if (remote_desc != 0) /* Have a remote connection. */ |
06d3b283 | 7551 | remote_check_symbols (objfile); |
dc8acb97 MS |
7552 | } |
7553 | ||
c906108c | 7554 | void |
fba45db2 | 7555 | _initialize_remote (void) |
c906108c | 7556 | { |
ea9c271d DJ |
7557 | struct remote_state *rs; |
7558 | ||
0f71a2f6 | 7559 | /* architecture specific data */ |
2bc416ba | 7560 | remote_gdbarch_data_handle = |
23860348 | 7561 | gdbarch_data_register_post_init (init_remote_state); |
29709017 DJ |
7562 | remote_g_packet_data_handle = |
7563 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 7564 | |
ea9c271d DJ |
7565 | /* Initialize the per-target state. At the moment there is only one |
7566 | of these, not one per target. Only one target is active at a | |
7567 | time. The default buffer size is unimportant; it will be expanded | |
7568 | whenever a larger buffer is needed. */ | |
0b83947e | 7569 | rs = get_remote_state_raw (); |
ea9c271d DJ |
7570 | rs->buf_size = 400; |
7571 | rs->buf = xmalloc (rs->buf_size); | |
7572 | ||
c906108c SS |
7573 | init_remote_ops (); |
7574 | add_target (&remote_ops); | |
7575 | ||
7576 | init_extended_remote_ops (); | |
7577 | add_target (&extended_remote_ops); | |
cce74817 | 7578 | |
43ff13b4 JM |
7579 | init_remote_async_ops (); |
7580 | add_target (&remote_async_ops); | |
7581 | ||
7582 | init_extended_async_remote_ops (); | |
7583 | add_target (&extended_async_remote_ops); | |
7584 | ||
dc8acb97 | 7585 | /* Hook into new objfile notification. */ |
06d3b283 | 7586 | observer_attach_new_objfile (remote_new_objfile); |
dc8acb97 | 7587 | |
b803fb0f DJ |
7588 | /* Set up signal handlers. */ |
7589 | sigint_remote_token = | |
7590 | create_async_signal_handler (async_remote_interrupt, NULL); | |
7591 | sigint_remote_twice_token = | |
7592 | create_async_signal_handler (inferior_event_handler_wrapper, NULL); | |
7593 | ||
c906108c SS |
7594 | #if 0 |
7595 | init_remote_threadtests (); | |
7596 | #endif | |
7597 | ||
23860348 | 7598 | /* set/show remote ... */ |
d471ea57 | 7599 | |
1bedd215 | 7600 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
7601 | Remote protocol specific variables\n\ |
7602 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 7603 | the packets being used"), |
cff3e48b | 7604 | &remote_set_cmdlist, "set remote ", |
23860348 | 7605 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 7606 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
7607 | Remote protocol specific variables\n\ |
7608 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 7609 | the packets being used"), |
cff3e48b | 7610 | &remote_show_cmdlist, "show remote ", |
23860348 | 7611 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 7612 | |
1a966eab AC |
7613 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
7614 | Compare section data on target to the exec file.\n\ | |
7615 | Argument is a single section name (default: all loaded sections)."), | |
c906108c SS |
7616 | &cmdlist); |
7617 | ||
1a966eab AC |
7618 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
7619 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
7620 | maintenance packet TEXT\n\ |
7621 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
7622 | this command sends the string TEXT to the inferior, and displays the\n\ | |
7623 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 7624 | terminating `#' character and checksum."), |
c906108c SS |
7625 | &maintenancelist); |
7626 | ||
7915a72c AC |
7627 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
7628 | Set whether to send break if interrupted."), _("\ | |
7629 | Show whether to send break if interrupted."), _("\ | |
7630 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
2c5b56ce | 7631 | NULL, NULL, /* FIXME: i18n: Whether to send break if interrupted is %s. */ |
e707bbc2 | 7632 | &setlist, &showlist); |
c906108c | 7633 | |
23860348 | 7634 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 7635 | |
1a966eab AC |
7636 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
7637 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 7638 | &setlist); |
1a966eab AC |
7639 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
7640 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
7641 | &showlist); |
7642 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
7643 | set_memory_write_packet_size, _("\ |
7644 | Set the maximum number of bytes per memory-write packet.\n\ | |
7645 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
7646 | default packet size. The actual limit is further reduced\n\ | |
7647 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
7648 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
7649 | &remote_set_cmdlist); |
7650 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
7651 | set_memory_read_packet_size, _("\ |
7652 | Set the maximum number of bytes per memory-read packet.\n\ | |
7653 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
7654 | default packet size. The actual limit is further reduced\n\ | |
7655 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
7656 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
7657 | &remote_set_cmdlist); |
7658 | add_cmd ("memory-write-packet-size", no_class, | |
7659 | show_memory_write_packet_size, | |
1a966eab | 7660 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
7661 | &remote_show_cmdlist); |
7662 | add_cmd ("memory-read-packet-size", no_class, | |
7663 | show_memory_read_packet_size, | |
1a966eab | 7664 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 7665 | &remote_show_cmdlist); |
c906108c | 7666 | |
b3f42336 | 7667 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
7668 | &remote_hw_watchpoint_limit, _("\ |
7669 | Set the maximum number of target hardware watchpoints."), _("\ | |
7670 | Show the maximum number of target hardware watchpoints."), _("\ | |
7671 | Specify a negative limit for unlimited."), | |
2c5b56ce | 7672 | NULL, NULL, /* FIXME: i18n: The maximum number of target hardware watchpoints is %s. */ |
b3f42336 AC |
7673 | &remote_set_cmdlist, &remote_show_cmdlist); |
7674 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, | |
7915a72c AC |
7675 | &remote_hw_breakpoint_limit, _("\ |
7676 | Set the maximum number of target hardware breakpoints."), _("\ | |
7677 | Show the maximum number of target hardware breakpoints."), _("\ | |
7678 | Specify a negative limit for unlimited."), | |
2c5b56ce | 7679 | NULL, NULL, /* FIXME: i18n: The maximum number of target hardware breakpoints is %s. */ |
b3f42336 | 7680 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 7681 | |
4d28ad1e AC |
7682 | add_setshow_integer_cmd ("remoteaddresssize", class_obscure, |
7683 | &remote_address_size, _("\ | |
7684 | Set the maximum size of the address (in bits) in a memory packet."), _("\ | |
7685 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
7686 | NULL, | |
7687 | NULL, /* FIXME: i18n: */ | |
7688 | &setlist, &showlist); | |
c906108c | 7689 | |
444abaca | 7690 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 7691 | "X", "binary-download", 1); |
0f71a2f6 | 7692 | |
444abaca | 7693 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 7694 | "vCont", "verbose-resume", 0); |
506fb367 | 7695 | |
89be2091 DJ |
7696 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
7697 | "QPassSignals", "pass-signals", 0); | |
7698 | ||
444abaca | 7699 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 7700 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 7701 | |
444abaca | 7702 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 7703 | "P", "set-register", 1); |
d471ea57 | 7704 | |
444abaca | 7705 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 7706 | "p", "fetch-register", 1); |
b96ec7ac | 7707 | |
444abaca | 7708 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 7709 | "Z0", "software-breakpoint", 0); |
d471ea57 | 7710 | |
444abaca | 7711 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 7712 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 7713 | |
444abaca | 7714 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 7715 | "Z2", "write-watchpoint", 0); |
d471ea57 | 7716 | |
444abaca | 7717 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 7718 | "Z3", "read-watchpoint", 0); |
d471ea57 | 7719 | |
444abaca | 7720 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 7721 | "Z4", "access-watchpoint", 0); |
d471ea57 | 7722 | |
0876f84a DJ |
7723 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
7724 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 7725 | |
23181151 DJ |
7726 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
7727 | "qXfer:features:read", "target-features", 0); | |
7728 | ||
cfa9d6d9 DJ |
7729 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
7730 | "qXfer:libraries:read", "library-info", 0); | |
7731 | ||
fd79ecee DJ |
7732 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
7733 | "qXfer:memory-map:read", "memory-map", 0); | |
7734 | ||
0e7f50da UW |
7735 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_read], |
7736 | "qXfer:spu:read", "read-spu-object", 0); | |
7737 | ||
7738 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_write], | |
7739 | "qXfer:spu:write", "write-spu-object", 0); | |
7740 | ||
444abaca | 7741 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 7742 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
7743 | 0); |
7744 | ||
be2a5f71 DJ |
7745 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
7746 | "qSupported", "supported-packets", 0); | |
7747 | ||
08388c79 DE |
7748 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory], |
7749 | "qSearch:memory", "search-memory", 0); | |
7750 | ||
a6b151f1 DJ |
7751 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
7752 | "vFile:open", "hostio-open", 0); | |
7753 | ||
7754 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
7755 | "vFile:pread", "hostio-pread", 0); | |
7756 | ||
7757 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
7758 | "vFile:pwrite", "hostio-pwrite", 0); | |
7759 | ||
7760 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
7761 | "vFile:close", "hostio-close", 0); | |
7762 | ||
7763 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
7764 | "vFile:unlink", "hostio-unlink", 0); | |
7765 | ||
2d717e4f DJ |
7766 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
7767 | "vAttach", "attach", 0); | |
7768 | ||
7769 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
7770 | "vRun", "run", 0); | |
7771 | ||
37a105a1 DJ |
7772 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
7773 | Z sub-packet has its own set and show commands, but users may | |
7774 | have sets to this variable in their .gdbinit files (or in their | |
7775 | documentation). */ | |
e9e68a56 | 7776 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
7777 | &remote_Z_packet_detect, _("\ |
7778 | Set use of remote protocol `Z' packets"), _("\ | |
7779 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 7780 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 7781 | packets."), |
e9e68a56 | 7782 | set_remote_protocol_Z_packet_cmd, |
2c5b56ce | 7783 | show_remote_protocol_Z_packet_cmd, /* FIXME: i18n: Use of remote protocol `Z' packets is %s. */ |
e9e68a56 | 7784 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 7785 | |
a6b151f1 DJ |
7786 | add_prefix_cmd ("remote", class_files, remote_command, _("\ |
7787 | Manipulate files on the remote system\n\ | |
7788 | Transfer files to and from the remote target system."), | |
7789 | &remote_cmdlist, "remote ", | |
7790 | 0 /* allow-unknown */, &cmdlist); | |
7791 | ||
7792 | add_cmd ("put", class_files, remote_put_command, | |
7793 | _("Copy a local file to the remote system."), | |
7794 | &remote_cmdlist); | |
7795 | ||
7796 | add_cmd ("get", class_files, remote_get_command, | |
7797 | _("Copy a remote file to the local system."), | |
7798 | &remote_cmdlist); | |
7799 | ||
7800 | add_cmd ("delete", class_files, remote_delete_command, | |
7801 | _("Delete a remote file."), | |
7802 | &remote_cmdlist); | |
7803 | ||
2d717e4f DJ |
7804 | remote_exec_file = xstrdup (""); |
7805 | add_setshow_string_noescape_cmd ("exec-file", class_files, | |
7806 | &remote_exec_file, _("\ | |
7807 | Set the remote pathname for \"run\""), _("\ | |
7808 | Show the remote pathname for \"run\""), NULL, NULL, NULL, | |
7809 | &remote_set_cmdlist, &remote_show_cmdlist); | |
7810 | ||
449092f6 CV |
7811 | /* Eventually initialize fileio. See fileio.c */ |
7812 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
c906108c | 7813 | } |