Commit | Line | Data |
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c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c | 2 | |
6aba47ca | 3 | Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, |
9b254dd1 | 4 | 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 |
29182b13 | 5 | Free Software Foundation, Inc. |
c906108c | 6 | |
c5aa993b JM |
7 | This file is part of GDB. |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b JM |
12 | (at your option) any later version. |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c5aa993b | 21 | |
23860348 | 22 | /* See the GDB User Guide for details of the GDB remote protocol. */ |
c5aa993b | 23 | |
c906108c SS |
24 | #include "defs.h" |
25 | #include "gdb_string.h" | |
26 | #include <ctype.h> | |
27 | #include <fcntl.h> | |
c906108c SS |
28 | #include "inferior.h" |
29 | #include "bfd.h" | |
30 | #include "symfile.h" | |
60250e8b | 31 | #include "exceptions.h" |
c906108c | 32 | #include "target.h" |
c5aa993b | 33 | /*#include "terminal.h" */ |
c906108c SS |
34 | #include "gdbcmd.h" |
35 | #include "objfiles.h" | |
36 | #include "gdb-stabs.h" | |
37 | #include "gdbthread.h" | |
c2c6d25f | 38 | #include "remote.h" |
4e052eda | 39 | #include "regcache.h" |
fd0407d6 | 40 | #include "value.h" |
1ff9c3d6 | 41 | #include "gdb_assert.h" |
6867ae3e | 42 | #include "observer.h" |
a77053c2 | 43 | #include "solib.h" |
37a105a1 DJ |
44 | #include "cli/cli-decode.h" |
45 | #include "cli/cli-setshow.h" | |
424163ea | 46 | #include "target-descriptions.h" |
c906108c | 47 | |
7a292a7a | 48 | #include <ctype.h> |
9846de1b | 49 | #include <sys/time.h> |
c906108c | 50 | |
43ff13b4 | 51 | #include "event-loop.h" |
c2c6d25f | 52 | #include "event-top.h" |
2acceee2 | 53 | #include "inf-loop.h" |
43ff13b4 | 54 | |
c906108c SS |
55 | #include <signal.h> |
56 | #include "serial.h" | |
57 | ||
6240bebf MS |
58 | #include "gdbcore.h" /* for exec_bfd */ |
59 | ||
449092f6 | 60 | #include "remote-fileio.h" |
a6b151f1 | 61 | #include "gdb/fileio.h" |
449092f6 | 62 | |
fd79ecee DJ |
63 | #include "memory-map.h" |
64 | ||
6765f3e5 DJ |
65 | /* The size to align memory write packets, when practical. The protocol |
66 | does not guarantee any alignment, and gdb will generate short | |
67 | writes and unaligned writes, but even as a best-effort attempt this | |
68 | can improve bulk transfers. For instance, if a write is misaligned | |
69 | relative to the target's data bus, the stub may need to make an extra | |
70 | round trip fetching data from the target. This doesn't make a | |
71 | huge difference, but it's easy to do, so we try to be helpful. | |
72 | ||
73 | The alignment chosen is arbitrary; usually data bus width is | |
74 | important here, not the possibly larger cache line size. */ | |
75 | enum { REMOTE_ALIGN_WRITES = 16 }; | |
76 | ||
23860348 | 77 | /* Prototypes for local functions. */ |
6426a772 JM |
78 | static void cleanup_sigint_signal_handler (void *dummy); |
79 | static void initialize_sigint_signal_handler (void); | |
6d820c5c | 80 | static int getpkt_sane (char **buf, long *sizeof_buf, int forever); |
6426a772 | 81 | |
a14ed312 KB |
82 | static void handle_remote_sigint (int); |
83 | static void handle_remote_sigint_twice (int); | |
84 | static void async_remote_interrupt (gdb_client_data); | |
85 | void async_remote_interrupt_twice (gdb_client_data); | |
43ff13b4 | 86 | |
a14ed312 | 87 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 88 | |
316f2060 | 89 | static void remote_prepare_to_store (struct regcache *regcache); |
c906108c | 90 | |
56be3814 | 91 | static void remote_fetch_registers (struct regcache *regcache, int regno); |
c906108c | 92 | |
39f77062 KB |
93 | static void remote_resume (ptid_t ptid, int step, |
94 | enum target_signal siggnal); | |
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 | ||
484 | static struct target_ops extended_async_remote_ops; | |
485 | ||
6426a772 JM |
486 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
487 | ``forever'' still use the normal timeout mechanism. This is | |
488 | currently used by the ASYNC code to guarentee that target reads | |
489 | during the initial connect always time-out. Once getpkt has been | |
490 | modified to return a timeout indication and, in turn | |
491 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 492 | this can go away. */ |
6426a772 JM |
493 | static int wait_forever_enabled_p = 1; |
494 | ||
495 | ||
c906108c SS |
496 | /* This variable chooses whether to send a ^C or a break when the user |
497 | requests program interruption. Although ^C is usually what remote | |
498 | systems expect, and that is the default here, sometimes a break is | |
499 | preferable instead. */ | |
500 | ||
501 | static int remote_break; | |
502 | ||
c906108c SS |
503 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
504 | remote_open knows that we don't have a file open when the program | |
505 | starts. */ | |
819cc324 | 506 | static struct serial *remote_desc = NULL; |
c906108c | 507 | |
c906108c SS |
508 | /* This variable sets the number of bits in an address that are to be |
509 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
510 | leading zeros, the entire address would be sent. This variable | |
511 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The | |
512 | initial implementation of remote.c restricted the address sent in | |
513 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
514 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
515 | address was never sent. Since fixing this bug may cause a break in | |
516 | some remote targets this variable is principly provided to | |
23860348 | 517 | facilitate backward compatibility. */ |
c906108c SS |
518 | |
519 | static int remote_address_size; | |
520 | ||
6426a772 JM |
521 | /* Tempoary to track who currently owns the terminal. See |
522 | target_async_terminal_* for more details. */ | |
523 | ||
524 | static int remote_async_terminal_ours_p; | |
525 | ||
2d717e4f DJ |
526 | /* The executable file to use for "run" on the remote side. */ |
527 | ||
528 | static char *remote_exec_file = ""; | |
529 | ||
11cf8741 | 530 | \f |
11cf8741 | 531 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
532 | memory read/write packet. MIN (rsa->remote_packet_size, |
533 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 534 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
535 | (speed up transfers). The variables ``preferred_*'' (the user |
536 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 537 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
538 | |
539 | struct memory_packet_config | |
540 | { | |
541 | char *name; | |
542 | long size; | |
543 | int fixed_p; | |
544 | }; | |
545 | ||
546 | /* Compute the current size of a read/write packet. Since this makes | |
547 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
548 | ||
549 | static long | |
550 | get_memory_packet_size (struct memory_packet_config *config) | |
551 | { | |
d01949b6 | 552 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
553 | struct remote_arch_state *rsa = get_remote_arch_state (); |
554 | ||
11cf8741 JM |
555 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk |
556 | law?) that some hosts don't cope very well with large alloca() | |
557 | calls. Eventually the alloca() code will be replaced by calls to | |
558 | xmalloc() and make_cleanups() allowing this restriction to either | |
23860348 | 559 | be lifted or removed. */ |
11cf8741 JM |
560 | #ifndef MAX_REMOTE_PACKET_SIZE |
561 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
562 | #endif | |
3de11b2e | 563 | /* NOTE: 20 ensures we can write at least one byte. */ |
11cf8741 | 564 | #ifndef MIN_REMOTE_PACKET_SIZE |
3de11b2e | 565 | #define MIN_REMOTE_PACKET_SIZE 20 |
11cf8741 JM |
566 | #endif |
567 | long what_they_get; | |
568 | if (config->fixed_p) | |
569 | { | |
570 | if (config->size <= 0) | |
571 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
572 | else | |
573 | what_they_get = config->size; | |
574 | } | |
575 | else | |
576 | { | |
ea9c271d | 577 | what_they_get = get_remote_packet_size (); |
23860348 | 578 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
579 | if (config->size > 0 |
580 | && what_they_get > config->size) | |
581 | what_they_get = config->size; | |
be2a5f71 DJ |
582 | |
583 | /* Limit it to the size of the targets ``g'' response unless we have | |
584 | permission from the stub to use a larger packet size. */ | |
585 | if (rs->explicit_packet_size == 0 | |
586 | && rsa->actual_register_packet_size > 0 | |
587 | && what_they_get > rsa->actual_register_packet_size) | |
588 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 JM |
589 | } |
590 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
591 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
592 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
593 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
6d820c5c DJ |
594 | |
595 | /* Make sure there is room in the global buffer for this packet | |
596 | (including its trailing NUL byte). */ | |
597 | if (rs->buf_size < what_they_get + 1) | |
598 | { | |
599 | rs->buf_size = 2 * what_they_get; | |
600 | rs->buf = xrealloc (rs->buf, 2 * what_they_get); | |
601 | } | |
602 | ||
11cf8741 JM |
603 | return what_they_get; |
604 | } | |
605 | ||
606 | /* Update the size of a read/write packet. If they user wants | |
23860348 | 607 | something really big then do a sanity check. */ |
11cf8741 JM |
608 | |
609 | static void | |
610 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
611 | { | |
612 | int fixed_p = config->fixed_p; | |
613 | long size = config->size; | |
614 | if (args == NULL) | |
8a3fe4f8 | 615 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
616 | else if (strcmp (args, "hard") == 0 |
617 | || strcmp (args, "fixed") == 0) | |
618 | fixed_p = 1; | |
619 | else if (strcmp (args, "soft") == 0 | |
620 | || strcmp (args, "limit") == 0) | |
621 | fixed_p = 0; | |
622 | else | |
623 | { | |
624 | char *end; | |
625 | size = strtoul (args, &end, 0); | |
626 | if (args == end) | |
8a3fe4f8 | 627 | error (_("Invalid %s (bad syntax)."), config->name); |
11cf8741 JM |
628 | #if 0 |
629 | /* Instead of explicitly capping the size of a packet to | |
630 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
631 | instead allowed to set the size to something arbitrarily | |
23860348 | 632 | large. */ |
11cf8741 | 633 | if (size > MAX_REMOTE_PACKET_SIZE) |
8a3fe4f8 | 634 | error (_("Invalid %s (too large)."), config->name); |
11cf8741 JM |
635 | #endif |
636 | } | |
23860348 | 637 | /* Extra checks? */ |
11cf8741 JM |
638 | if (fixed_p && !config->fixed_p) |
639 | { | |
e2e0b3e5 AC |
640 | if (! query (_("The target may not be able to correctly handle a %s\n" |
641 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 642 | config->name, size)) |
8a3fe4f8 | 643 | error (_("Packet size not changed.")); |
11cf8741 | 644 | } |
23860348 | 645 | /* Update the config. */ |
11cf8741 JM |
646 | config->fixed_p = fixed_p; |
647 | config->size = size; | |
648 | } | |
649 | ||
650 | static void | |
651 | show_memory_packet_size (struct memory_packet_config *config) | |
652 | { | |
a3f17187 | 653 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 654 | if (config->fixed_p) |
a3f17187 | 655 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
656 | get_memory_packet_size (config)); |
657 | else | |
a3f17187 | 658 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
659 | get_memory_packet_size (config)); |
660 | } | |
661 | ||
662 | static struct memory_packet_config memory_write_packet_config = | |
663 | { | |
664 | "memory-write-packet-size", | |
665 | }; | |
666 | ||
667 | static void | |
668 | set_memory_write_packet_size (char *args, int from_tty) | |
669 | { | |
670 | set_memory_packet_size (args, &memory_write_packet_config); | |
671 | } | |
672 | ||
673 | static void | |
674 | show_memory_write_packet_size (char *args, int from_tty) | |
675 | { | |
676 | show_memory_packet_size (&memory_write_packet_config); | |
677 | } | |
678 | ||
679 | static long | |
680 | get_memory_write_packet_size (void) | |
681 | { | |
682 | return get_memory_packet_size (&memory_write_packet_config); | |
683 | } | |
684 | ||
685 | static struct memory_packet_config memory_read_packet_config = | |
686 | { | |
687 | "memory-read-packet-size", | |
688 | }; | |
689 | ||
690 | static void | |
691 | set_memory_read_packet_size (char *args, int from_tty) | |
692 | { | |
693 | set_memory_packet_size (args, &memory_read_packet_config); | |
694 | } | |
695 | ||
696 | static void | |
697 | show_memory_read_packet_size (char *args, int from_tty) | |
698 | { | |
699 | show_memory_packet_size (&memory_read_packet_config); | |
700 | } | |
701 | ||
702 | static long | |
703 | get_memory_read_packet_size (void) | |
704 | { | |
705 | long size = get_memory_packet_size (&memory_read_packet_config); | |
706 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an | |
707 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
708 | increased beyond this. */ |
709 | if (size > get_remote_packet_size ()) | |
710 | size = get_remote_packet_size (); | |
11cf8741 JM |
711 | return size; |
712 | } | |
713 | ||
11cf8741 | 714 | \f |
5a2468f5 JM |
715 | /* Generic configuration support for packets the stub optionally |
716 | supports. Allows the user to specify the use of the packet as well | |
23860348 | 717 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
718 | |
719 | enum packet_support | |
720 | { | |
721 | PACKET_SUPPORT_UNKNOWN = 0, | |
722 | PACKET_ENABLE, | |
723 | PACKET_DISABLE | |
724 | }; | |
725 | ||
5a2468f5 JM |
726 | struct packet_config |
727 | { | |
bb572ddd DJ |
728 | const char *name; |
729 | const char *title; | |
7f19b9a2 | 730 | enum auto_boolean detect; |
5a2468f5 JM |
731 | enum packet_support support; |
732 | }; | |
733 | ||
d471ea57 | 734 | /* Analyze a packet's return value and update the packet config |
23860348 | 735 | accordingly. */ |
d471ea57 AC |
736 | |
737 | enum packet_result | |
738 | { | |
739 | PACKET_ERROR, | |
740 | PACKET_OK, | |
741 | PACKET_UNKNOWN | |
742 | }; | |
743 | ||
5a2468f5 | 744 | static void |
d471ea57 | 745 | update_packet_config (struct packet_config *config) |
5a2468f5 | 746 | { |
d471ea57 AC |
747 | switch (config->detect) |
748 | { | |
7f19b9a2 | 749 | case AUTO_BOOLEAN_TRUE: |
d471ea57 AC |
750 | config->support = PACKET_ENABLE; |
751 | break; | |
7f19b9a2 | 752 | case AUTO_BOOLEAN_FALSE: |
d471ea57 AC |
753 | config->support = PACKET_DISABLE; |
754 | break; | |
7f19b9a2 | 755 | case AUTO_BOOLEAN_AUTO: |
d471ea57 AC |
756 | config->support = PACKET_SUPPORT_UNKNOWN; |
757 | break; | |
758 | } | |
5a2468f5 JM |
759 | } |
760 | ||
761 | static void | |
fba45db2 | 762 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
763 | { |
764 | char *support = "internal-error"; | |
765 | switch (config->support) | |
766 | { | |
767 | case PACKET_ENABLE: | |
768 | support = "enabled"; | |
769 | break; | |
770 | case PACKET_DISABLE: | |
771 | support = "disabled"; | |
772 | break; | |
773 | case PACKET_SUPPORT_UNKNOWN: | |
774 | support = "unknown"; | |
775 | break; | |
776 | } | |
777 | switch (config->detect) | |
778 | { | |
7f19b9a2 | 779 | case AUTO_BOOLEAN_AUTO: |
37a105a1 DJ |
780 | printf_filtered (_("Support for the `%s' packet is auto-detected, currently %s.\n"), |
781 | config->name, support); | |
5a2468f5 | 782 | break; |
7f19b9a2 AC |
783 | case AUTO_BOOLEAN_TRUE: |
784 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
785 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
786 | config->name, support); | |
8e248173 | 787 | break; |
5a2468f5 JM |
788 | } |
789 | } | |
790 | ||
791 | static void | |
bb572ddd DJ |
792 | add_packet_config_cmd (struct packet_config *config, const char *name, |
793 | const char *title, int legacy) | |
d471ea57 | 794 | { |
5a2468f5 JM |
795 | char *set_doc; |
796 | char *show_doc; | |
d471ea57 | 797 | char *cmd_name; |
3ed07be4 | 798 | |
5a2468f5 JM |
799 | config->name = name; |
800 | config->title = title; | |
7f19b9a2 | 801 | config->detect = AUTO_BOOLEAN_AUTO; |
8e248173 | 802 | config->support = PACKET_SUPPORT_UNKNOWN; |
b435e160 AC |
803 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
804 | name, title); | |
805 | show_doc = xstrprintf ("Show current use of remote protocol `%s' (%s) packet", | |
806 | name, title); | |
d471ea57 | 807 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 808 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 809 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
2c5b56ce | 810 | &config->detect, set_doc, show_doc, NULL, /* help_doc */ |
bb572ddd DJ |
811 | set_remote_protocol_packet_cmd, |
812 | show_remote_protocol_packet_cmd, | |
813 | &remote_set_cmdlist, &remote_show_cmdlist); | |
23860348 | 814 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
815 | if (legacy) |
816 | { | |
817 | char *legacy_name; | |
b435e160 | 818 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 819 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 820 | &remote_set_cmdlist); |
d471ea57 | 821 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 822 | &remote_show_cmdlist); |
d471ea57 | 823 | } |
5a2468f5 JM |
824 | } |
825 | ||
d471ea57 | 826 | static enum packet_result |
a76d924d | 827 | packet_check_result (const char *buf) |
5a2468f5 | 828 | { |
d471ea57 | 829 | if (buf[0] != '\0') |
5a2468f5 | 830 | { |
d471ea57 | 831 | /* The stub recognized the packet request. Check that the |
23860348 | 832 | operation succeeded. */ |
a76d924d DJ |
833 | if (buf[0] == 'E' |
834 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
835 | && buf[3] == '\0') | |
836 | /* "Enn" - definitly an error. */ | |
837 | return PACKET_ERROR; | |
838 | ||
839 | /* Always treat "E." as an error. This will be used for | |
840 | more verbose error messages, such as E.memtypes. */ | |
841 | if (buf[0] == 'E' && buf[1] == '.') | |
842 | return PACKET_ERROR; | |
843 | ||
844 | /* The packet may or may not be OK. Just assume it is. */ | |
845 | return PACKET_OK; | |
846 | } | |
847 | else | |
848 | /* The stub does not support the packet. */ | |
849 | return PACKET_UNKNOWN; | |
850 | } | |
851 | ||
852 | static enum packet_result | |
853 | packet_ok (const char *buf, struct packet_config *config) | |
854 | { | |
855 | enum packet_result result; | |
856 | ||
857 | result = packet_check_result (buf); | |
858 | switch (result) | |
859 | { | |
860 | case PACKET_OK: | |
861 | case PACKET_ERROR: | |
862 | /* The stub recognized the packet request. */ | |
d471ea57 AC |
863 | switch (config->support) |
864 | { | |
865 | case PACKET_SUPPORT_UNKNOWN: | |
866 | if (remote_debug) | |
867 | fprintf_unfiltered (gdb_stdlog, | |
868 | "Packet %s (%s) is supported\n", | |
869 | config->name, config->title); | |
870 | config->support = PACKET_ENABLE; | |
871 | break; | |
872 | case PACKET_DISABLE: | |
8e65ff28 | 873 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 874 | _("packet_ok: attempt to use a disabled packet")); |
d471ea57 AC |
875 | break; |
876 | case PACKET_ENABLE: | |
877 | break; | |
878 | } | |
a76d924d DJ |
879 | break; |
880 | case PACKET_UNKNOWN: | |
23860348 | 881 | /* The stub does not support the packet. */ |
d471ea57 AC |
882 | switch (config->support) |
883 | { | |
884 | case PACKET_ENABLE: | |
7f19b9a2 | 885 | if (config->detect == AUTO_BOOLEAN_AUTO) |
d471ea57 | 886 | /* If the stub previously indicated that the packet was |
23860348 | 887 | supported then there is a protocol error.. */ |
8a3fe4f8 | 888 | error (_("Protocol error: %s (%s) conflicting enabled responses."), |
d471ea57 AC |
889 | config->name, config->title); |
890 | else | |
23860348 | 891 | /* The user set it wrong. */ |
8a3fe4f8 | 892 | error (_("Enabled packet %s (%s) not recognized by stub"), |
d471ea57 AC |
893 | config->name, config->title); |
894 | break; | |
895 | case PACKET_SUPPORT_UNKNOWN: | |
896 | if (remote_debug) | |
897 | fprintf_unfiltered (gdb_stdlog, | |
898 | "Packet %s (%s) is NOT supported\n", | |
899 | config->name, config->title); | |
900 | config->support = PACKET_DISABLE; | |
901 | break; | |
902 | case PACKET_DISABLE: | |
903 | break; | |
904 | } | |
a76d924d | 905 | break; |
5a2468f5 | 906 | } |
a76d924d DJ |
907 | |
908 | return result; | |
5a2468f5 JM |
909 | } |
910 | ||
444abaca DJ |
911 | enum { |
912 | PACKET_vCont = 0, | |
913 | PACKET_X, | |
914 | PACKET_qSymbol, | |
915 | PACKET_P, | |
916 | PACKET_p, | |
917 | PACKET_Z0, | |
918 | PACKET_Z1, | |
919 | PACKET_Z2, | |
920 | PACKET_Z3, | |
921 | PACKET_Z4, | |
a6b151f1 DJ |
922 | PACKET_vFile_open, |
923 | PACKET_vFile_pread, | |
924 | PACKET_vFile_pwrite, | |
925 | PACKET_vFile_close, | |
926 | PACKET_vFile_unlink, | |
0876f84a | 927 | PACKET_qXfer_auxv, |
23181151 | 928 | PACKET_qXfer_features, |
cfa9d6d9 | 929 | PACKET_qXfer_libraries, |
fd79ecee | 930 | PACKET_qXfer_memory_map, |
0e7f50da UW |
931 | PACKET_qXfer_spu_read, |
932 | PACKET_qXfer_spu_write, | |
444abaca | 933 | PACKET_qGetTLSAddr, |
be2a5f71 | 934 | PACKET_qSupported, |
89be2091 | 935 | PACKET_QPassSignals, |
2d717e4f DJ |
936 | PACKET_vAttach, |
937 | PACKET_vRun, | |
444abaca DJ |
938 | PACKET_MAX |
939 | }; | |
506fb367 | 940 | |
444abaca | 941 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 MS |
942 | |
943 | static void | |
444abaca DJ |
944 | set_remote_protocol_packet_cmd (char *args, int from_tty, |
945 | struct cmd_list_element *c) | |
dc8acb97 | 946 | { |
444abaca | 947 | struct packet_config *packet; |
dc8acb97 | 948 | |
444abaca DJ |
949 | for (packet = remote_protocol_packets; |
950 | packet < &remote_protocol_packets[PACKET_MAX]; | |
951 | packet++) | |
952 | { | |
953 | if (&packet->detect == c->var) | |
954 | { | |
955 | update_packet_config (packet); | |
956 | return; | |
957 | } | |
958 | } | |
959 | internal_error (__FILE__, __LINE__, "Could not find config for %s", | |
960 | c->name); | |
dc8acb97 MS |
961 | } |
962 | ||
5a2468f5 | 963 | static void |
444abaca DJ |
964 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
965 | struct cmd_list_element *c, | |
966 | const char *value) | |
5a2468f5 | 967 | { |
444abaca | 968 | struct packet_config *packet; |
5a2468f5 | 969 | |
444abaca DJ |
970 | for (packet = remote_protocol_packets; |
971 | packet < &remote_protocol_packets[PACKET_MAX]; | |
972 | packet++) | |
973 | { | |
974 | if (&packet->detect == c->var) | |
975 | { | |
976 | show_packet_config_cmd (packet); | |
977 | return; | |
978 | } | |
979 | } | |
980 | internal_error (__FILE__, __LINE__, "Could not find config for %s", | |
981 | c->name); | |
5a2468f5 JM |
982 | } |
983 | ||
d471ea57 AC |
984 | /* Should we try one of the 'Z' requests? */ |
985 | ||
986 | enum Z_packet_type | |
987 | { | |
988 | Z_PACKET_SOFTWARE_BP, | |
989 | Z_PACKET_HARDWARE_BP, | |
990 | Z_PACKET_WRITE_WP, | |
991 | Z_PACKET_READ_WP, | |
992 | Z_PACKET_ACCESS_WP, | |
993 | NR_Z_PACKET_TYPES | |
994 | }; | |
96baa820 | 995 | |
d471ea57 | 996 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 997 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 998 | |
7f19b9a2 | 999 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
1000 | |
1001 | static void | |
fba45db2 KB |
1002 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
1003 | struct cmd_list_element *c) | |
96baa820 | 1004 | { |
d471ea57 AC |
1005 | int i; |
1006 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
1007 | { | |
444abaca DJ |
1008 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
1009 | update_packet_config (&remote_protocol_packets[PACKET_Z0 + i]); | |
d471ea57 | 1010 | } |
96baa820 JM |
1011 | } |
1012 | ||
1013 | static void | |
08546159 AC |
1014 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
1015 | struct cmd_list_element *c, | |
1016 | const char *value) | |
96baa820 | 1017 | { |
d471ea57 AC |
1018 | int i; |
1019 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
1020 | { | |
444abaca | 1021 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 1022 | } |
96baa820 JM |
1023 | } |
1024 | ||
9d1f7ab2 MS |
1025 | /* Should we try the 'ThreadInfo' query packet? |
1026 | ||
1027 | This variable (NOT available to the user: auto-detect only!) | |
1028 | determines whether GDB will use the new, simpler "ThreadInfo" | |
1029 | query or the older, more complex syntax for thread queries. | |
802188a7 | 1030 | This is an auto-detect variable (set to true at each connect, |
9d1f7ab2 MS |
1031 | and set to false when the target fails to recognize it). */ |
1032 | ||
1033 | static int use_threadinfo_query; | |
1034 | static int use_threadextra_query; | |
1035 | ||
23860348 | 1036 | /* Tokens for use by the asynchronous signal handlers for SIGINT. */ |
d5d6fca5 DJ |
1037 | static struct async_signal_handler *sigint_remote_twice_token; |
1038 | static struct async_signal_handler *sigint_remote_token; | |
43ff13b4 | 1039 | |
c906108c SS |
1040 | /* These are pointers to hook functions that may be set in order to |
1041 | modify resume/wait behavior for a particular architecture. */ | |
1042 | ||
9a4105ab AC |
1043 | void (*deprecated_target_resume_hook) (void); |
1044 | void (*deprecated_target_wait_loop_hook) (void); | |
c906108c SS |
1045 | \f |
1046 | ||
c5aa993b | 1047 | |
c906108c SS |
1048 | /* These are the threads which we last sent to the remote system. |
1049 | -1 for all or -2 for not sent yet. */ | |
1050 | static int general_thread; | |
cce74817 | 1051 | static int continue_thread; |
c906108c SS |
1052 | |
1053 | /* Call this function as a result of | |
1054 | 1) A halt indication (T packet) containing a thread id | |
1055 | 2) A direct query of currthread | |
1056 | 3) Successful execution of set thread | |
1057 | */ | |
1058 | ||
1059 | static void | |
fba45db2 | 1060 | record_currthread (int currthread) |
c906108c | 1061 | { |
c906108c | 1062 | general_thread = currthread; |
cce74817 | 1063 | |
c906108c SS |
1064 | /* If this is a new thread, add it to GDB's thread list. |
1065 | If we leave it up to WFI to do this, bad things will happen. */ | |
39f77062 | 1066 | if (!in_thread_list (pid_to_ptid (currthread))) |
93815fbf | 1067 | add_thread (pid_to_ptid (currthread)); |
c906108c SS |
1068 | } |
1069 | ||
89be2091 DJ |
1070 | static char *last_pass_packet; |
1071 | ||
1072 | /* If 'QPassSignals' is supported, tell the remote stub what signals | |
1073 | it can simply pass through to the inferior without reporting. */ | |
1074 | ||
1075 | static void | |
1076 | remote_pass_signals (void) | |
1077 | { | |
1078 | if (remote_protocol_packets[PACKET_QPassSignals].support != PACKET_DISABLE) | |
1079 | { | |
1080 | char *pass_packet, *p; | |
1081 | int numsigs = (int) TARGET_SIGNAL_LAST; | |
1082 | int count = 0, i; | |
1083 | ||
1084 | gdb_assert (numsigs < 256); | |
1085 | for (i = 0; i < numsigs; i++) | |
1086 | { | |
1087 | if (signal_stop_state (i) == 0 | |
1088 | && signal_print_state (i) == 0 | |
1089 | && signal_pass_state (i) == 1) | |
1090 | count++; | |
1091 | } | |
1092 | pass_packet = xmalloc (count * 3 + strlen ("QPassSignals:") + 1); | |
1093 | strcpy (pass_packet, "QPassSignals:"); | |
1094 | p = pass_packet + strlen (pass_packet); | |
1095 | for (i = 0; i < numsigs; i++) | |
1096 | { | |
1097 | if (signal_stop_state (i) == 0 | |
1098 | && signal_print_state (i) == 0 | |
1099 | && signal_pass_state (i) == 1) | |
1100 | { | |
1101 | if (i >= 16) | |
1102 | *p++ = tohex (i >> 4); | |
1103 | *p++ = tohex (i & 15); | |
1104 | if (count) | |
1105 | *p++ = ';'; | |
1106 | else | |
1107 | break; | |
1108 | count--; | |
1109 | } | |
1110 | } | |
1111 | *p = 0; | |
1112 | if (!last_pass_packet || strcmp (last_pass_packet, pass_packet)) | |
1113 | { | |
1114 | struct remote_state *rs = get_remote_state (); | |
1115 | char *buf = rs->buf; | |
1116 | ||
1117 | putpkt (pass_packet); | |
1118 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1119 | packet_ok (buf, &remote_protocol_packets[PACKET_QPassSignals]); | |
1120 | if (last_pass_packet) | |
1121 | xfree (last_pass_packet); | |
1122 | last_pass_packet = pass_packet; | |
1123 | } | |
1124 | else | |
1125 | xfree (pass_packet); | |
1126 | } | |
1127 | } | |
1128 | ||
c906108c SS |
1129 | #define MAGIC_NULL_PID 42000 |
1130 | ||
1131 | static void | |
fba45db2 | 1132 | set_thread (int th, int gen) |
c906108c | 1133 | { |
d01949b6 | 1134 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 1135 | char *buf = rs->buf; |
cce74817 | 1136 | int state = gen ? general_thread : continue_thread; |
c906108c SS |
1137 | |
1138 | if (state == th) | |
1139 | return; | |
1140 | ||
1141 | buf[0] = 'H'; | |
1142 | buf[1] = gen ? 'g' : 'c'; | |
1143 | if (th == MAGIC_NULL_PID) | |
1144 | { | |
1145 | buf[2] = '0'; | |
1146 | buf[3] = '\0'; | |
1147 | } | |
1148 | else if (th < 0) | |
ea9c271d | 1149 | xsnprintf (&buf[2], get_remote_packet_size () - 2, "-%x", -th); |
c906108c | 1150 | else |
ea9c271d | 1151 | xsnprintf (&buf[2], get_remote_packet_size () - 2, "%x", th); |
c906108c | 1152 | putpkt (buf); |
6d820c5c | 1153 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 1154 | if (gen) |
c5aa993b | 1155 | general_thread = th; |
c906108c | 1156 | else |
cce74817 | 1157 | continue_thread = th; |
c906108c SS |
1158 | } |
1159 | \f | |
1160 | /* Return nonzero if the thread TH is still alive on the remote system. */ | |
1161 | ||
1162 | static int | |
39f77062 | 1163 | remote_thread_alive (ptid_t ptid) |
c906108c | 1164 | { |
6d820c5c | 1165 | struct remote_state *rs = get_remote_state (); |
39f77062 | 1166 | int tid = PIDGET (ptid); |
c906108c | 1167 | |
cce74817 | 1168 | if (tid < 0) |
2e9f7625 | 1169 | xsnprintf (rs->buf, get_remote_packet_size (), "T-%08x", -tid); |
c906108c | 1170 | else |
2e9f7625 DJ |
1171 | xsnprintf (rs->buf, get_remote_packet_size (), "T%08x", tid); |
1172 | putpkt (rs->buf); | |
6d820c5c | 1173 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1174 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
1175 | } |
1176 | ||
1177 | /* About these extended threadlist and threadinfo packets. They are | |
1178 | variable length packets but, the fields within them are often fixed | |
1179 | length. They are redundent enough to send over UDP as is the | |
1180 | remote protocol in general. There is a matching unit test module | |
1181 | in libstub. */ | |
1182 | ||
cce74817 JM |
1183 | #define OPAQUETHREADBYTES 8 |
1184 | ||
1185 | /* a 64 bit opaque identifier */ | |
1186 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
1187 | ||
23860348 MS |
1188 | /* WARNING: This threadref data structure comes from the remote O.S., |
1189 | libstub protocol encoding, and remote.c. it is not particularly | |
1190 | changable. */ | |
cce74817 JM |
1191 | |
1192 | /* Right now, the internal structure is int. We want it to be bigger. | |
1193 | Plan to fix this. | |
c5aa993b | 1194 | */ |
cce74817 | 1195 | |
23860348 | 1196 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 1197 | |
9d1f7ab2 | 1198 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 1199 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
1200 | |
1201 | struct gdb_ext_thread_info | |
c5aa993b | 1202 | { |
23860348 | 1203 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 1204 | int active; /* Has state interesting to GDB? |
23860348 | 1205 | regs, stack. */ |
2bc416ba | 1206 | char display[256]; /* Brief state display, name, |
cedea757 | 1207 | blocked/suspended. */ |
23860348 | 1208 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 1209 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 1210 | whatever. */ |
c5aa993b | 1211 | }; |
cce74817 JM |
1212 | |
1213 | /* The volume of remote transfers can be limited by submitting | |
1214 | a mask containing bits specifying the desired information. | |
1215 | Use a union of these values as the 'selection' parameter to | |
1216 | get_thread_info. FIXME: Make these TAG names more thread specific. | |
c5aa993b | 1217 | */ |
cce74817 JM |
1218 | |
1219 | #define TAG_THREADID 1 | |
1220 | #define TAG_EXISTS 2 | |
1221 | #define TAG_DISPLAY 4 | |
1222 | #define TAG_THREADNAME 8 | |
c5aa993b | 1223 | #define TAG_MOREDISPLAY 16 |
cce74817 | 1224 | |
23860348 | 1225 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 1226 | |
b2dd6311 | 1227 | char *unpack_varlen_hex (char *buff, ULONGEST *result); |
cce74817 | 1228 | |
a14ed312 | 1229 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 1230 | |
a14ed312 | 1231 | static char *pack_nibble (char *buf, int nibble); |
cce74817 | 1232 | |
23860348 | 1233 | static char *pack_hex_byte (char *pkt, int /* unsigned char */ byte); |
cce74817 | 1234 | |
a14ed312 | 1235 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 1236 | |
a14ed312 | 1237 | static char *pack_int (char *buf, int value); |
cce74817 | 1238 | |
a14ed312 | 1239 | static char *unpack_int (char *buf, int *value); |
cce74817 | 1240 | |
a14ed312 | 1241 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 1242 | |
23860348 | 1243 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 1244 | |
23860348 | 1245 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 1246 | |
23860348 | 1247 | void int_to_threadref (threadref *id, int value); |
cce74817 | 1248 | |
23860348 | 1249 | static int threadref_to_int (threadref *ref); |
cce74817 | 1250 | |
23860348 | 1251 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 1252 | |
23860348 | 1253 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 1254 | |
2bc416ba | 1255 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 1256 | threadref *id); |
cce74817 | 1257 | |
a14ed312 | 1258 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 1259 | threadref *expectedref, |
a14ed312 KB |
1260 | struct gdb_ext_thread_info |
1261 | *info); | |
cce74817 JM |
1262 | |
1263 | ||
2bc416ba | 1264 | static int remote_get_threadinfo (threadref *threadid, |
23860348 | 1265 | int fieldset, /*TAG mask */ |
a14ed312 | 1266 | struct gdb_ext_thread_info *info); |
cce74817 | 1267 | |
a14ed312 KB |
1268 | static char *pack_threadlist_request (char *pkt, int startflag, |
1269 | int threadcount, | |
23860348 | 1270 | threadref *nextthread); |
cce74817 | 1271 | |
a14ed312 KB |
1272 | static int parse_threadlist_response (char *pkt, |
1273 | int result_limit, | |
23860348 | 1274 | threadref *original_echo, |
2bc416ba | 1275 | threadref *resultlist, |
23860348 | 1276 | int *doneflag); |
cce74817 | 1277 | |
a14ed312 | 1278 | static int remote_get_threadlist (int startflag, |
23860348 | 1279 | threadref *nextthread, |
a14ed312 KB |
1280 | int result_limit, |
1281 | int *done, | |
2bc416ba | 1282 | int *result_count, |
23860348 | 1283 | threadref *threadlist); |
cce74817 | 1284 | |
23860348 | 1285 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 1286 | |
a14ed312 KB |
1287 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
1288 | void *context, int looplimit); | |
cce74817 | 1289 | |
23860348 | 1290 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 1291 | |
23860348 | 1292 | /* Encode 64 bits in 16 chars of hex. */ |
c906108c SS |
1293 | |
1294 | static const char hexchars[] = "0123456789abcdef"; | |
1295 | ||
1296 | static int | |
fba45db2 | 1297 | ishex (int ch, int *val) |
c906108c SS |
1298 | { |
1299 | if ((ch >= 'a') && (ch <= 'f')) | |
1300 | { | |
1301 | *val = ch - 'a' + 10; | |
1302 | return 1; | |
1303 | } | |
1304 | if ((ch >= 'A') && (ch <= 'F')) | |
1305 | { | |
1306 | *val = ch - 'A' + 10; | |
1307 | return 1; | |
1308 | } | |
1309 | if ((ch >= '0') && (ch <= '9')) | |
1310 | { | |
1311 | *val = ch - '0'; | |
1312 | return 1; | |
1313 | } | |
1314 | return 0; | |
1315 | } | |
1316 | ||
1317 | static int | |
fba45db2 | 1318 | stubhex (int ch) |
c906108c SS |
1319 | { |
1320 | if (ch >= 'a' && ch <= 'f') | |
1321 | return ch - 'a' + 10; | |
1322 | if (ch >= '0' && ch <= '9') | |
1323 | return ch - '0'; | |
1324 | if (ch >= 'A' && ch <= 'F') | |
1325 | return ch - 'A' + 10; | |
1326 | return -1; | |
1327 | } | |
1328 | ||
1329 | static int | |
fba45db2 | 1330 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
1331 | { |
1332 | int nibble; | |
1333 | int retval = 0; | |
1334 | ||
1335 | while (fieldlength) | |
1336 | { | |
1337 | nibble = stubhex (*buff++); | |
1338 | retval |= nibble; | |
1339 | fieldlength--; | |
1340 | if (fieldlength) | |
1341 | retval = retval << 4; | |
1342 | } | |
1343 | return retval; | |
1344 | } | |
1345 | ||
1346 | char * | |
fba45db2 | 1347 | unpack_varlen_hex (char *buff, /* packet to parse */ |
b2dd6311 | 1348 | ULONGEST *result) |
c906108c SS |
1349 | { |
1350 | int nibble; | |
d49c44d5 | 1351 | ULONGEST retval = 0; |
c906108c SS |
1352 | |
1353 | while (ishex (*buff, &nibble)) | |
1354 | { | |
1355 | buff++; | |
1356 | retval = retval << 4; | |
1357 | retval |= nibble & 0x0f; | |
1358 | } | |
1359 | *result = retval; | |
1360 | return buff; | |
1361 | } | |
1362 | ||
1363 | static char * | |
fba45db2 | 1364 | unpack_nibble (char *buf, int *val) |
c906108c | 1365 | { |
b7589f7d | 1366 | *val = fromhex (*buf++); |
c906108c SS |
1367 | return buf; |
1368 | } | |
1369 | ||
1370 | static char * | |
fba45db2 | 1371 | pack_nibble (char *buf, int nibble) |
c906108c SS |
1372 | { |
1373 | *buf++ = hexchars[(nibble & 0x0f)]; | |
1374 | return buf; | |
1375 | } | |
1376 | ||
1377 | static char * | |
fba45db2 | 1378 | pack_hex_byte (char *pkt, int byte) |
c906108c SS |
1379 | { |
1380 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
1381 | *pkt++ = hexchars[(byte & 0xf)]; | |
1382 | return pkt; | |
1383 | } | |
1384 | ||
1385 | static char * | |
fba45db2 | 1386 | unpack_byte (char *buf, int *value) |
c906108c SS |
1387 | { |
1388 | *value = stub_unpack_int (buf, 2); | |
1389 | return buf + 2; | |
1390 | } | |
1391 | ||
1392 | static char * | |
fba45db2 | 1393 | pack_int (char *buf, int value) |
c906108c SS |
1394 | { |
1395 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
1396 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
1397 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
1398 | buf = pack_hex_byte (buf, (value & 0xff)); | |
1399 | return buf; | |
1400 | } | |
1401 | ||
1402 | static char * | |
fba45db2 | 1403 | unpack_int (char *buf, int *value) |
c906108c SS |
1404 | { |
1405 | *value = stub_unpack_int (buf, 8); | |
1406 | return buf + 8; | |
1407 | } | |
1408 | ||
23860348 | 1409 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 1410 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
1411 | |
1412 | static char * | |
fba45db2 | 1413 | pack_string (char *pkt, char *string) |
c906108c SS |
1414 | { |
1415 | char ch; | |
1416 | int len; | |
1417 | ||
1418 | len = strlen (string); | |
1419 | if (len > 200) | |
23860348 | 1420 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
1421 | pkt = pack_hex_byte (pkt, len); |
1422 | while (len-- > 0) | |
1423 | { | |
1424 | ch = *string++; | |
1425 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 1426 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
1427 | *pkt++ = ch; |
1428 | } | |
1429 | return pkt; | |
1430 | } | |
1431 | #endif /* 0 (unused) */ | |
1432 | ||
1433 | static char * | |
fba45db2 | 1434 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
1435 | { |
1436 | while (length--) | |
1437 | *dest++ = *src++; | |
1438 | *dest = '\0'; | |
1439 | return src; | |
1440 | } | |
1441 | ||
1442 | static char * | |
fba45db2 | 1443 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
1444 | { |
1445 | char *limit; | |
1446 | unsigned char *altid; | |
1447 | ||
1448 | altid = (unsigned char *) id; | |
1449 | limit = pkt + BUF_THREAD_ID_SIZE; | |
1450 | while (pkt < limit) | |
1451 | pkt = pack_hex_byte (pkt, *altid++); | |
1452 | return pkt; | |
1453 | } | |
1454 | ||
1455 | ||
1456 | static char * | |
fba45db2 | 1457 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
1458 | { |
1459 | char *altref; | |
1460 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
1461 | int x, y; | |
1462 | ||
1463 | altref = (char *) id; | |
1464 | ||
1465 | while (inbuf < limit) | |
1466 | { | |
1467 | x = stubhex (*inbuf++); | |
1468 | y = stubhex (*inbuf++); | |
1469 | *altref++ = (x << 4) | y; | |
1470 | } | |
1471 | return inbuf; | |
1472 | } | |
1473 | ||
1474 | /* Externally, threadrefs are 64 bits but internally, they are still | |
1475 | ints. This is due to a mismatch of specifications. We would like | |
1476 | to use 64bit thread references internally. This is an adapter | |
1477 | function. */ | |
1478 | ||
1479 | void | |
fba45db2 | 1480 | int_to_threadref (threadref *id, int value) |
c906108c SS |
1481 | { |
1482 | unsigned char *scan; | |
1483 | ||
1484 | scan = (unsigned char *) id; | |
1485 | { | |
1486 | int i = 4; | |
1487 | while (i--) | |
1488 | *scan++ = 0; | |
1489 | } | |
1490 | *scan++ = (value >> 24) & 0xff; | |
1491 | *scan++ = (value >> 16) & 0xff; | |
1492 | *scan++ = (value >> 8) & 0xff; | |
1493 | *scan++ = (value & 0xff); | |
1494 | } | |
1495 | ||
1496 | static int | |
fba45db2 | 1497 | threadref_to_int (threadref *ref) |
c906108c SS |
1498 | { |
1499 | int i, value = 0; | |
1500 | unsigned char *scan; | |
1501 | ||
cfd77fa1 | 1502 | scan = *ref; |
c906108c SS |
1503 | scan += 4; |
1504 | i = 4; | |
1505 | while (i-- > 0) | |
1506 | value = (value << 8) | ((*scan++) & 0xff); | |
1507 | return value; | |
1508 | } | |
1509 | ||
1510 | static void | |
fba45db2 | 1511 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
1512 | { |
1513 | int i; | |
1514 | unsigned char *csrc, *cdest; | |
1515 | ||
1516 | csrc = (unsigned char *) src; | |
1517 | cdest = (unsigned char *) dest; | |
1518 | i = 8; | |
1519 | while (i--) | |
1520 | *cdest++ = *csrc++; | |
1521 | } | |
1522 | ||
1523 | static int | |
fba45db2 | 1524 | threadmatch (threadref *dest, threadref *src) |
c906108c | 1525 | { |
23860348 | 1526 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
1527 | #if 0 |
1528 | unsigned char *srcp, *destp; | |
1529 | int i, result; | |
1530 | srcp = (char *) src; | |
1531 | destp = (char *) dest; | |
1532 | ||
1533 | result = 1; | |
1534 | while (i-- > 0) | |
1535 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
1536 | return result; | |
1537 | #endif | |
1538 | return 1; | |
1539 | } | |
1540 | ||
1541 | /* | |
c5aa993b JM |
1542 | threadid:1, # always request threadid |
1543 | context_exists:2, | |
1544 | display:4, | |
1545 | unique_name:8, | |
1546 | more_display:16 | |
1547 | */ | |
c906108c SS |
1548 | |
1549 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
1550 | ||
1551 | static char * | |
fba45db2 | 1552 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 1553 | { |
23860348 MS |
1554 | *pkt++ = 'q'; /* Info Query */ |
1555 | *pkt++ = 'P'; /* process or thread info */ | |
1556 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 1557 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 1558 | *pkt = '\0'; /* terminate */ |
c906108c SS |
1559 | return pkt; |
1560 | } | |
1561 | ||
23860348 | 1562 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 1563 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 1564 | add more fields as time goes by. */ |
c906108c | 1565 | |
23860348 | 1566 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 1567 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 1568 | fetch registers and its stack? */ |
c5aa993b | 1569 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 1570 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 1571 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 1572 | the process. */ |
c906108c SS |
1573 | |
1574 | static int | |
fba45db2 KB |
1575 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
1576 | struct gdb_ext_thread_info *info) | |
c906108c | 1577 | { |
d01949b6 | 1578 | struct remote_state *rs = get_remote_state (); |
c906108c | 1579 | int mask, length; |
cfd77fa1 | 1580 | int tag; |
c906108c | 1581 | threadref ref; |
6d820c5c | 1582 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
1583 | int retval = 1; |
1584 | ||
23860348 | 1585 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
1586 | info->active = 0; |
1587 | info->display[0] = '\0'; | |
1588 | info->shortname[0] = '\0'; | |
1589 | info->more_display[0] = '\0'; | |
1590 | ||
23860348 MS |
1591 | /* Assume the characters indicating the packet type have been |
1592 | stripped. */ | |
c906108c SS |
1593 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
1594 | pkt = unpack_threadid (pkt, &ref); | |
1595 | ||
1596 | if (mask == 0) | |
8a3fe4f8 | 1597 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 1598 | if (!threadmatch (&ref, expectedref)) |
23860348 | 1599 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 1600 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
1601 | return 0; |
1602 | } | |
1603 | copy_threadref (&info->threadid, &ref); | |
1604 | ||
23860348 | 1605 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 1606 | |
23860348 MS |
1607 | /* Packets are terminated with nulls. */ |
1608 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
1609 | { |
1610 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
1611 | pkt = unpack_byte (pkt, &length); /* length */ |
1612 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 1613 | { |
8a3fe4f8 | 1614 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
1615 | retval = 0; |
1616 | break; | |
1617 | } | |
1618 | if (tag == TAG_THREADID) | |
1619 | { | |
1620 | if (length != 16) | |
1621 | { | |
8a3fe4f8 | 1622 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
1623 | retval = 0; |
1624 | break; | |
1625 | } | |
1626 | pkt = unpack_threadid (pkt, &ref); | |
1627 | mask = mask & ~TAG_THREADID; | |
1628 | continue; | |
1629 | } | |
1630 | if (tag == TAG_EXISTS) | |
1631 | { | |
1632 | info->active = stub_unpack_int (pkt, length); | |
1633 | pkt += length; | |
1634 | mask = mask & ~(TAG_EXISTS); | |
1635 | if (length > 8) | |
1636 | { | |
8a3fe4f8 | 1637 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
1638 | retval = 0; |
1639 | break; | |
1640 | } | |
1641 | continue; | |
1642 | } | |
1643 | if (tag == TAG_THREADNAME) | |
1644 | { | |
1645 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
1646 | mask = mask & ~TAG_THREADNAME; | |
1647 | continue; | |
1648 | } | |
1649 | if (tag == TAG_DISPLAY) | |
1650 | { | |
1651 | pkt = unpack_string (pkt, &info->display[0], length); | |
1652 | mask = mask & ~TAG_DISPLAY; | |
1653 | continue; | |
1654 | } | |
1655 | if (tag == TAG_MOREDISPLAY) | |
1656 | { | |
1657 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
1658 | mask = mask & ~TAG_MOREDISPLAY; | |
1659 | continue; | |
1660 | } | |
8a3fe4f8 | 1661 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 1662 | break; /* Not a tag we know about. */ |
c906108c SS |
1663 | } |
1664 | return retval; | |
1665 | } | |
1666 | ||
1667 | static int | |
fba45db2 KB |
1668 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
1669 | struct gdb_ext_thread_info *info) | |
c906108c | 1670 | { |
d01949b6 | 1671 | struct remote_state *rs = get_remote_state (); |
c906108c | 1672 | int result; |
c906108c | 1673 | |
2e9f7625 DJ |
1674 | pack_threadinfo_request (rs->buf, fieldset, threadid); |
1675 | putpkt (rs->buf); | |
6d820c5c | 1676 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1677 | result = remote_unpack_thread_info_response (rs->buf + 2, |
23860348 | 1678 | threadid, info); |
c906108c SS |
1679 | return result; |
1680 | } | |
1681 | ||
c906108c SS |
1682 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
1683 | ||
1684 | static char * | |
fba45db2 KB |
1685 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
1686 | threadref *nextthread) | |
c906108c SS |
1687 | { |
1688 | *pkt++ = 'q'; /* info query packet */ | |
1689 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 1690 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
1691 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
1692 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
1693 | *pkt = '\0'; | |
1694 | return pkt; | |
1695 | } | |
1696 | ||
1697 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
1698 | ||
1699 | static int | |
fba45db2 KB |
1700 | parse_threadlist_response (char *pkt, int result_limit, |
1701 | threadref *original_echo, threadref *resultlist, | |
1702 | int *doneflag) | |
c906108c | 1703 | { |
d01949b6 | 1704 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1705 | char *limit; |
1706 | int count, resultcount, done; | |
1707 | ||
1708 | resultcount = 0; | |
1709 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 1710 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 1711 | /* done parse past here */ |
c906108c SS |
1712 | pkt = unpack_byte (pkt, &count); /* count field */ |
1713 | pkt = unpack_nibble (pkt, &done); | |
1714 | /* The first threadid is the argument threadid. */ | |
1715 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
1716 | while ((count-- > 0) && (pkt < limit)) | |
1717 | { | |
1718 | pkt = unpack_threadid (pkt, resultlist++); | |
1719 | if (resultcount++ >= result_limit) | |
1720 | break; | |
1721 | } | |
1722 | if (doneflag) | |
1723 | *doneflag = done; | |
1724 | return resultcount; | |
1725 | } | |
1726 | ||
1727 | static int | |
fba45db2 KB |
1728 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
1729 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 1730 | { |
d01949b6 | 1731 | struct remote_state *rs = get_remote_state (); |
c906108c | 1732 | static threadref echo_nextthread; |
c906108c SS |
1733 | int result = 1; |
1734 | ||
23860348 | 1735 | /* Trancate result limit to be smaller than the packet size. */ |
ea9c271d DJ |
1736 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) >= get_remote_packet_size ()) |
1737 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; | |
c906108c | 1738 | |
6d820c5c DJ |
1739 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
1740 | putpkt (rs->buf); | |
1741 | getpkt (&rs->buf, &rs->buf_size, 0); | |
c906108c | 1742 | |
d8f2712d VP |
1743 | if (*rs->buf == '\0') |
1744 | *result_count = 0; | |
1745 | else | |
1746 | *result_count = | |
1747 | parse_threadlist_response (rs->buf + 2, result_limit, &echo_nextthread, | |
1748 | threadlist, done); | |
c906108c SS |
1749 | |
1750 | if (!threadmatch (&echo_nextthread, nextthread)) | |
1751 | { | |
23860348 MS |
1752 | /* FIXME: This is a good reason to drop the packet. */ |
1753 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
1754 | /* Possabilities : |
1755 | retransmit immediatly - race conditions | |
1756 | retransmit after timeout - yes | |
1757 | exit | |
1758 | wait for packet, then exit | |
1759 | */ | |
8a3fe4f8 | 1760 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 1761 | return 0; /* I choose simply exiting. */ |
c906108c SS |
1762 | } |
1763 | if (*result_count <= 0) | |
1764 | { | |
1765 | if (*done != 1) | |
1766 | { | |
8a3fe4f8 | 1767 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
1768 | result = 0; |
1769 | } | |
1770 | return result; /* break; */ | |
1771 | } | |
1772 | if (*result_count > result_limit) | |
1773 | { | |
1774 | *result_count = 0; | |
8a3fe4f8 | 1775 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
1776 | return 0; |
1777 | } | |
1778 | return result; | |
1779 | } | |
1780 | ||
23860348 MS |
1781 | /* This is the interface between remote and threads, remotes upper |
1782 | interface. */ | |
c906108c SS |
1783 | |
1784 | /* remote_find_new_threads retrieves the thread list and for each | |
1785 | thread in the list, looks up the thread in GDB's internal list, | |
1786 | ading the thread if it does not already exist. This involves | |
1787 | getting partial thread lists from the remote target so, polling the | |
1788 | quit_flag is required. */ | |
1789 | ||
1790 | ||
23860348 | 1791 | /* About this many threadisds fit in a packet. */ |
c906108c SS |
1792 | |
1793 | #define MAXTHREADLISTRESULTS 32 | |
1794 | ||
1795 | static int | |
fba45db2 KB |
1796 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
1797 | int looplimit) | |
c906108c SS |
1798 | { |
1799 | int done, i, result_count; | |
1800 | int startflag = 1; | |
1801 | int result = 1; | |
1802 | int loopcount = 0; | |
1803 | static threadref nextthread; | |
1804 | static threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
1805 | ||
1806 | done = 0; | |
1807 | while (!done) | |
1808 | { | |
1809 | if (loopcount++ > looplimit) | |
1810 | { | |
1811 | result = 0; | |
8a3fe4f8 | 1812 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
1813 | break; |
1814 | } | |
1815 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS, | |
1816 | &done, &result_count, resultthreadlist)) | |
1817 | { | |
1818 | result = 0; | |
1819 | break; | |
1820 | } | |
23860348 | 1821 | /* Clear for later iterations. */ |
c906108c SS |
1822 | startflag = 0; |
1823 | /* Setup to resume next batch of thread references, set nextthread. */ | |
1824 | if (result_count >= 1) | |
1825 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |
1826 | i = 0; | |
1827 | while (result_count--) | |
1828 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |
1829 | break; | |
1830 | } | |
1831 | return result; | |
1832 | } | |
1833 | ||
1834 | static int | |
fba45db2 | 1835 | remote_newthread_step (threadref *ref, void *context) |
c906108c | 1836 | { |
39f77062 | 1837 | ptid_t ptid; |
c906108c | 1838 | |
39f77062 KB |
1839 | ptid = pid_to_ptid (threadref_to_int (ref)); |
1840 | ||
1841 | if (!in_thread_list (ptid)) | |
1842 | add_thread (ptid); | |
c906108c SS |
1843 | return 1; /* continue iterator */ |
1844 | } | |
1845 | ||
1846 | #define CRAZY_MAX_THREADS 1000 | |
1847 | ||
39f77062 KB |
1848 | static ptid_t |
1849 | remote_current_thread (ptid_t oldpid) | |
c906108c | 1850 | { |
d01949b6 | 1851 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1852 | |
1853 | putpkt ("qC"); | |
6d820c5c | 1854 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1855 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
c273b20f JB |
1856 | /* Use strtoul here, so we'll correctly parse values whose highest |
1857 | bit is set. The protocol carries them as a simple series of | |
1858 | hex digits; in the absence of a sign, strtol will see such | |
1859 | values as positive numbers out of range for signed 'long', and | |
1860 | return LONG_MAX to indicate an overflow. */ | |
2e9f7625 | 1861 | return pid_to_ptid (strtoul (&rs->buf[2], NULL, 16)); |
c906108c SS |
1862 | else |
1863 | return oldpid; | |
1864 | } | |
1865 | ||
802188a7 RM |
1866 | /* Find new threads for info threads command. |
1867 | * Original version, using John Metzler's thread protocol. | |
9d1f7ab2 | 1868 | */ |
cce74817 JM |
1869 | |
1870 | static void | |
fba45db2 | 1871 | remote_find_new_threads (void) |
c906108c | 1872 | { |
c5aa993b JM |
1873 | remote_threadlist_iterator (remote_newthread_step, 0, |
1874 | CRAZY_MAX_THREADS); | |
39f77062 KB |
1875 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) /* ack ack ack */ |
1876 | inferior_ptid = remote_current_thread (inferior_ptid); | |
c906108c SS |
1877 | } |
1878 | ||
9d1f7ab2 MS |
1879 | /* |
1880 | * Find all threads for info threads command. | |
1881 | * Uses new thread protocol contributed by Cisco. | |
1882 | * Falls back and attempts to use the older method (above) | |
1883 | * if the target doesn't respond to the new method. | |
1884 | */ | |
1885 | ||
0f71a2f6 JM |
1886 | static void |
1887 | remote_threads_info (void) | |
1888 | { | |
d01949b6 | 1889 | struct remote_state *rs = get_remote_state (); |
085dd6e6 | 1890 | char *bufp; |
0f71a2f6 JM |
1891 | int tid; |
1892 | ||
1893 | if (remote_desc == 0) /* paranoia */ | |
8a3fe4f8 | 1894 | error (_("Command can only be used when connected to the remote target.")); |
0f71a2f6 | 1895 | |
9d1f7ab2 MS |
1896 | if (use_threadinfo_query) |
1897 | { | |
1898 | putpkt ("qfThreadInfo"); | |
6d820c5c | 1899 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1900 | bufp = rs->buf; |
9d1f7ab2 | 1901 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 1902 | { |
9d1f7ab2 MS |
1903 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
1904 | { | |
1905 | do | |
1906 | { | |
c273b20f JB |
1907 | /* Use strtoul here, so we'll correctly parse values |
1908 | whose highest bit is set. The protocol carries | |
1909 | them as a simple series of hex digits; in the | |
1910 | absence of a sign, strtol will see such values as | |
1911 | positive numbers out of range for signed 'long', | |
1912 | and return LONG_MAX to indicate an overflow. */ | |
1913 | tid = strtoul (bufp, &bufp, 16); | |
39f77062 KB |
1914 | if (tid != 0 && !in_thread_list (pid_to_ptid (tid))) |
1915 | add_thread (pid_to_ptid (tid)); | |
9d1f7ab2 MS |
1916 | } |
1917 | while (*bufp++ == ','); /* comma-separated list */ | |
1918 | putpkt ("qsThreadInfo"); | |
6d820c5c | 1919 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1920 | bufp = rs->buf; |
9d1f7ab2 MS |
1921 | } |
1922 | return; /* done */ | |
1923 | } | |
1924 | } | |
1925 | ||
23860348 | 1926 | /* Else fall back to old method based on jmetzler protocol. */ |
9d1f7ab2 MS |
1927 | use_threadinfo_query = 0; |
1928 | remote_find_new_threads (); | |
1929 | return; | |
1930 | } | |
1931 | ||
802188a7 | 1932 | /* |
9d1f7ab2 MS |
1933 | * Collect a descriptive string about the given thread. |
1934 | * The target may say anything it wants to about the thread | |
1935 | * (typically info about its blocked / runnable state, name, etc.). | |
1936 | * This string will appear in the info threads display. | |
802188a7 | 1937 | * |
9d1f7ab2 MS |
1938 | * Optional: targets are not required to implement this function. |
1939 | */ | |
1940 | ||
1941 | static char * | |
1942 | remote_threads_extra_info (struct thread_info *tp) | |
1943 | { | |
d01949b6 | 1944 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
1945 | int result; |
1946 | int set; | |
1947 | threadref id; | |
1948 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 1949 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
1950 | int n = 0; /* position in display_buf */ |
1951 | ||
1952 | if (remote_desc == 0) /* paranoia */ | |
8e65ff28 | 1953 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 1954 | _("remote_threads_extra_info")); |
9d1f7ab2 MS |
1955 | |
1956 | if (use_threadextra_query) | |
1957 | { | |
2e9f7625 | 1958 | xsnprintf (rs->buf, get_remote_packet_size (), "qThreadExtraInfo,%x", |
ecbc58df | 1959 | PIDGET (tp->ptid)); |
2e9f7625 | 1960 | putpkt (rs->buf); |
6d820c5c | 1961 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1962 | if (rs->buf[0] != 0) |
9d1f7ab2 | 1963 | { |
2e9f7625 DJ |
1964 | n = min (strlen (rs->buf) / 2, sizeof (display_buf)); |
1965 | result = hex2bin (rs->buf, (gdb_byte *) display_buf, n); | |
30559e10 | 1966 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
1967 | return display_buf; |
1968 | } | |
0f71a2f6 | 1969 | } |
9d1f7ab2 MS |
1970 | |
1971 | /* If the above query fails, fall back to the old method. */ | |
1972 | use_threadextra_query = 0; | |
1973 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
1974 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
39f77062 | 1975 | int_to_threadref (&id, PIDGET (tp->ptid)); |
9d1f7ab2 MS |
1976 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
1977 | if (threadinfo.active) | |
0f71a2f6 | 1978 | { |
9d1f7ab2 | 1979 | if (*threadinfo.shortname) |
2bc416ba | 1980 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
ecbc58df | 1981 | " Name: %s,", threadinfo.shortname); |
9d1f7ab2 | 1982 | if (*threadinfo.display) |
2bc416ba | 1983 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 1984 | " State: %s,", threadinfo.display); |
9d1f7ab2 | 1985 | if (*threadinfo.more_display) |
2bc416ba | 1986 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 1987 | " Priority: %s", threadinfo.more_display); |
9d1f7ab2 MS |
1988 | |
1989 | if (n > 0) | |
c5aa993b | 1990 | { |
23860348 | 1991 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
1992 | if (',' == display_buf[n-1]) |
1993 | display_buf[n-1] = ' '; | |
1994 | return display_buf; | |
c5aa993b | 1995 | } |
0f71a2f6 | 1996 | } |
9d1f7ab2 | 1997 | return NULL; |
0f71a2f6 | 1998 | } |
c906108c | 1999 | \f |
c5aa993b | 2000 | |
24b06219 | 2001 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
2002 | |
2003 | static void | |
fba45db2 | 2004 | extended_remote_restart (void) |
c906108c | 2005 | { |
d01949b6 | 2006 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2007 | |
2008 | /* Send the restart command; for reasons I don't understand the | |
2009 | remote side really expects a number after the "R". */ | |
ea9c271d | 2010 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); |
6d820c5c | 2011 | putpkt (rs->buf); |
c906108c | 2012 | |
ad9a8f3f | 2013 | remote_fileio_reset (); |
c906108c SS |
2014 | } |
2015 | \f | |
2016 | /* Clean up connection to a remote debugger. */ | |
2017 | ||
c906108c | 2018 | static void |
fba45db2 | 2019 | remote_close (int quitting) |
c906108c SS |
2020 | { |
2021 | if (remote_desc) | |
2cd58942 | 2022 | serial_close (remote_desc); |
c906108c SS |
2023 | remote_desc = NULL; |
2024 | } | |
2025 | ||
23860348 | 2026 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
2027 | |
2028 | static void | |
fba45db2 | 2029 | get_offsets (void) |
c906108c | 2030 | { |
d01949b6 | 2031 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 2032 | char *buf; |
085dd6e6 | 2033 | char *ptr; |
31d99776 DJ |
2034 | int lose, num_segments = 0, do_sections, do_segments; |
2035 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
c906108c | 2036 | struct section_offsets *offs; |
31d99776 DJ |
2037 | struct symfile_segment_data *data; |
2038 | ||
2039 | if (symfile_objfile == NULL) | |
2040 | return; | |
c906108c SS |
2041 | |
2042 | putpkt ("qOffsets"); | |
6d820c5c | 2043 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2044 | buf = rs->buf; |
c906108c SS |
2045 | |
2046 | if (buf[0] == '\000') | |
2047 | return; /* Return silently. Stub doesn't support | |
23860348 | 2048 | this command. */ |
c906108c SS |
2049 | if (buf[0] == 'E') |
2050 | { | |
8a3fe4f8 | 2051 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
2052 | return; |
2053 | } | |
2054 | ||
2055 | /* Pick up each field in turn. This used to be done with scanf, but | |
2056 | scanf will make trouble if CORE_ADDR size doesn't match | |
2057 | conversion directives correctly. The following code will work | |
2058 | with any size of CORE_ADDR. */ | |
2059 | text_addr = data_addr = bss_addr = 0; | |
2060 | ptr = buf; | |
2061 | lose = 0; | |
2062 | ||
2063 | if (strncmp (ptr, "Text=", 5) == 0) | |
2064 | { | |
2065 | ptr += 5; | |
2066 | /* Don't use strtol, could lose on big values. */ | |
2067 | while (*ptr && *ptr != ';') | |
2068 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 2069 | |
31d99776 DJ |
2070 | if (strncmp (ptr, ";Data=", 6) == 0) |
2071 | { | |
2072 | ptr += 6; | |
2073 | while (*ptr && *ptr != ';') | |
2074 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
2075 | } | |
2076 | else | |
2077 | lose = 1; | |
2078 | ||
2079 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
2080 | { | |
2081 | ptr += 5; | |
2082 | while (*ptr && *ptr != ';') | |
2083 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 2084 | |
31d99776 DJ |
2085 | if (bss_addr != data_addr) |
2086 | warning (_("Target reported unsupported offsets: %s"), buf); | |
2087 | } | |
2088 | else | |
2089 | lose = 1; | |
2090 | } | |
2091 | else if (strncmp (ptr, "TextSeg=", 8) == 0) | |
c906108c | 2092 | { |
31d99776 DJ |
2093 | ptr += 8; |
2094 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 2095 | while (*ptr && *ptr != ';') |
31d99776 DJ |
2096 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
2097 | num_segments = 1; | |
2098 | ||
2099 | if (strncmp (ptr, ";DataSeg=", 9) == 0) | |
2100 | { | |
2101 | ptr += 9; | |
2102 | while (*ptr && *ptr != ';') | |
2103 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
2104 | num_segments++; | |
2105 | } | |
c906108c SS |
2106 | } |
2107 | else | |
2108 | lose = 1; | |
2109 | ||
2110 | if (lose) | |
8a3fe4f8 | 2111 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
2112 | else if (*ptr != '\0') |
2113 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 2114 | |
802188a7 | 2115 | offs = ((struct section_offsets *) |
a39a16c4 | 2116 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 2117 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 2118 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 2119 | |
31d99776 DJ |
2120 | data = get_symfile_segment_data (symfile_objfile->obfd); |
2121 | do_segments = (data != NULL); | |
2122 | do_sections = num_segments == 0; | |
c906108c | 2123 | |
28c32713 | 2124 | if (num_segments > 0) |
31d99776 | 2125 | { |
31d99776 DJ |
2126 | segments[0] = text_addr; |
2127 | segments[1] = data_addr; | |
2128 | } | |
28c32713 JB |
2129 | /* If we have two segments, we can still try to relocate everything |
2130 | by assuming that the .text and .data offsets apply to the whole | |
2131 | text and data segments. Convert the offsets given in the packet | |
2132 | to base addresses for symfile_map_offsets_to_segments. */ | |
2133 | else if (data && data->num_segments == 2) | |
2134 | { | |
2135 | segments[0] = data->segment_bases[0] + text_addr; | |
2136 | segments[1] = data->segment_bases[1] + data_addr; | |
2137 | num_segments = 2; | |
2138 | } | |
2139 | /* There's no way to relocate by segment. */ | |
2140 | else | |
2141 | do_segments = 0; | |
31d99776 DJ |
2142 | |
2143 | if (do_segments) | |
2144 | { | |
2145 | int ret = symfile_map_offsets_to_segments (symfile_objfile->obfd, data, | |
2146 | offs, num_segments, segments); | |
2147 | ||
2148 | if (ret == 0 && !do_sections) | |
2149 | error (_("Can not handle qOffsets TextSeg response with this symbol file")); | |
2150 | ||
2151 | if (ret > 0) | |
2152 | do_sections = 0; | |
2153 | } | |
c906108c | 2154 | |
9ef895d6 DJ |
2155 | if (data) |
2156 | free_symfile_segment_data (data); | |
31d99776 DJ |
2157 | |
2158 | if (do_sections) | |
2159 | { | |
2160 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; | |
2161 | ||
2162 | /* This is a temporary kludge to force data and bss to use the same offsets | |
2163 | because that's what nlmconv does now. The real solution requires changes | |
2164 | to the stub and remote.c that I don't have time to do right now. */ | |
2165 | ||
2166 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; | |
2167 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
2168 | } | |
c906108c SS |
2169 | |
2170 | objfile_relocate (symfile_objfile, offs); | |
2171 | } | |
2172 | ||
8621d6a9 | 2173 | /* Stub for catch_exception. */ |
0f71a2f6 | 2174 | |
2d717e4f DJ |
2175 | struct start_remote_args |
2176 | { | |
2177 | int from_tty; | |
2178 | ||
2179 | /* The current target. */ | |
2180 | struct target_ops *target; | |
2181 | ||
2182 | /* Non-zero if this is an extended-remote target. */ | |
2183 | int extended_p; | |
2184 | }; | |
2185 | ||
9cbc821d | 2186 | static void |
2d717e4f | 2187 | remote_start_remote (struct ui_out *uiout, void *opaque) |
c906108c | 2188 | { |
2d717e4f DJ |
2189 | struct remote_state *rs = get_remote_state (); |
2190 | struct start_remote_args *args = opaque; | |
2191 | char *wait_status = NULL; | |
8621d6a9 | 2192 | |
23860348 | 2193 | immediate_quit++; /* Allow user to interrupt it. */ |
c906108c SS |
2194 | |
2195 | /* Ack any packet which the remote side has already sent. */ | |
2cd58942 | 2196 | serial_write (remote_desc, "+", 1); |
c906108c | 2197 | |
2d717e4f DJ |
2198 | /* Check whether the target is running now. */ |
2199 | putpkt ("?"); | |
2200 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2201 | ||
2202 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') | |
2203 | { | |
2204 | if (args->extended_p) | |
2205 | { | |
2206 | /* We're connected, but not running. Drop out before we | |
2207 | call start_remote. */ | |
2208 | target_mark_exited (args->target); | |
2209 | return; | |
2210 | } | |
2211 | else | |
2212 | error (_("The target is not running (try extended-remote?)")); | |
2213 | } | |
2214 | else | |
2215 | { | |
2216 | if (args->extended_p) | |
2217 | target_mark_running (args->target); | |
2218 | ||
2219 | /* Save the reply for later. */ | |
2220 | wait_status = alloca (strlen (rs->buf) + 1); | |
2221 | strcpy (wait_status, rs->buf); | |
2222 | } | |
2223 | ||
c906108c SS |
2224 | /* Let the stub know that we want it to return the thread. */ |
2225 | set_thread (-1, 0); | |
2226 | ||
2d717e4f DJ |
2227 | /* Without this, some commands which require an active target |
2228 | (such as kill) won't work. This variable serves (at least) | |
2229 | double duty as both the pid of the target process (if it has | |
2230 | such), and as a flag indicating that a target is active. | |
2231 | These functions should be split out into seperate variables, | |
2232 | especially since GDB will someday have a notion of debugging | |
2233 | several processes. */ | |
2234 | inferior_ptid = pid_to_ptid (MAGIC_NULL_PID); | |
2235 | ||
2236 | /* Now, if we have thread information, update inferior_ptid. */ | |
39f77062 | 2237 | inferior_ptid = remote_current_thread (inferior_ptid); |
c906108c | 2238 | |
23860348 | 2239 | get_offsets (); /* Get text, data & bss offsets. */ |
c906108c | 2240 | |
2d717e4f DJ |
2241 | /* Use the previously fetched status. */ |
2242 | gdb_assert (wait_status != NULL); | |
2243 | strcpy (rs->buf, wait_status); | |
2244 | rs->cached_wait_status = 1; | |
c906108c | 2245 | |
2d717e4f DJ |
2246 | immediate_quit--; |
2247 | start_remote (args->from_tty); /* Initialize gdb process mechanisms. */ | |
c906108c SS |
2248 | } |
2249 | ||
2250 | /* Open a connection to a remote debugger. | |
2251 | NAME is the filename used for communication. */ | |
2252 | ||
2253 | static void | |
fba45db2 | 2254 | remote_open (char *name, int from_tty) |
c906108c | 2255 | { |
92d1e331 | 2256 | remote_open_1 (name, from_tty, &remote_ops, 0, 0); |
c906108c SS |
2257 | } |
2258 | ||
23860348 | 2259 | /* Just like remote_open, but with asynchronous support. */ |
43ff13b4 | 2260 | static void |
fba45db2 | 2261 | remote_async_open (char *name, int from_tty) |
43ff13b4 | 2262 | { |
92d1e331 | 2263 | remote_open_1 (name, from_tty, &remote_async_ops, 0, 1); |
43ff13b4 JM |
2264 | } |
2265 | ||
c906108c SS |
2266 | /* Open a connection to a remote debugger using the extended |
2267 | remote gdb protocol. NAME is the filename used for communication. */ | |
2268 | ||
2269 | static void | |
fba45db2 | 2270 | extended_remote_open (char *name, int from_tty) |
c906108c | 2271 | { |
92d1e331 DJ |
2272 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */, |
2273 | 0 /* async_p */); | |
c906108c SS |
2274 | } |
2275 | ||
23860348 | 2276 | /* Just like extended_remote_open, but with asynchronous support. */ |
43ff13b4 | 2277 | static void |
fba45db2 | 2278 | extended_remote_async_open (char *name, int from_tty) |
43ff13b4 | 2279 | { |
92d1e331 DJ |
2280 | remote_open_1 (name, from_tty, &extended_async_remote_ops, |
2281 | 1 /*extended_p */, 1 /* async_p */); | |
43ff13b4 JM |
2282 | } |
2283 | ||
c906108c SS |
2284 | /* Generic code for opening a connection to a remote target. */ |
2285 | ||
d471ea57 AC |
2286 | static void |
2287 | init_all_packet_configs (void) | |
2288 | { | |
2289 | int i; | |
444abaca DJ |
2290 | for (i = 0; i < PACKET_MAX; i++) |
2291 | update_packet_config (&remote_protocol_packets[i]); | |
d471ea57 AC |
2292 | } |
2293 | ||
23860348 | 2294 | /* Symbol look-up. */ |
dc8acb97 MS |
2295 | |
2296 | static void | |
2297 | remote_check_symbols (struct objfile *objfile) | |
2298 | { | |
d01949b6 | 2299 | struct remote_state *rs = get_remote_state (); |
dc8acb97 MS |
2300 | char *msg, *reply, *tmp; |
2301 | struct minimal_symbol *sym; | |
2302 | int end; | |
2303 | ||
444abaca | 2304 | if (remote_protocol_packets[PACKET_qSymbol].support == PACKET_DISABLE) |
dc8acb97 MS |
2305 | return; |
2306 | ||
6d820c5c DJ |
2307 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
2308 | because we need both at the same time. */ | |
ea9c271d | 2309 | msg = alloca (get_remote_packet_size ()); |
6d820c5c | 2310 | |
23860348 | 2311 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
2312 | |
2313 | putpkt ("qSymbol::"); | |
6d820c5c DJ |
2314 | getpkt (&rs->buf, &rs->buf_size, 0); |
2315 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSymbol]); | |
2e9f7625 | 2316 | reply = rs->buf; |
dc8acb97 MS |
2317 | |
2318 | while (strncmp (reply, "qSymbol:", 8) == 0) | |
2319 | { | |
2320 | tmp = &reply[8]; | |
cfd77fa1 | 2321 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
2322 | msg[end] = '\0'; |
2323 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
2324 | if (sym == NULL) | |
ea9c271d | 2325 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
dc8acb97 | 2326 | else |
2bbe3cc1 DJ |
2327 | { |
2328 | CORE_ADDR sym_addr = SYMBOL_VALUE_ADDRESS (sym); | |
2329 | ||
2330 | /* If this is a function address, return the start of code | |
2331 | instead of any data function descriptor. */ | |
2332 | sym_addr = gdbarch_convert_from_func_ptr_addr (current_gdbarch, | |
2333 | sym_addr, | |
2334 | ¤t_target); | |
2335 | ||
2336 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", | |
2337 | paddr_nz (sym_addr), &reply[8]); | |
2338 | } | |
2339 | ||
dc8acb97 | 2340 | putpkt (msg); |
6d820c5c | 2341 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2342 | reply = rs->buf; |
dc8acb97 MS |
2343 | } |
2344 | } | |
2345 | ||
9db8d71f DJ |
2346 | static struct serial * |
2347 | remote_serial_open (char *name) | |
2348 | { | |
2349 | static int udp_warning = 0; | |
2350 | ||
2351 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
2352 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
2353 | serial connection is reliable and not the serial connection promising | |
2354 | to be. */ | |
2355 | if (!udp_warning && strncmp (name, "udp:", 4) == 0) | |
2356 | { | |
8a3fe4f8 AC |
2357 | warning (_("\ |
2358 | The remote protocol may be unreliable over UDP.\n\ | |
2359 | Some events may be lost, rendering further debugging impossible.")); | |
9db8d71f DJ |
2360 | udp_warning = 1; |
2361 | } | |
2362 | ||
2363 | return serial_open (name); | |
2364 | } | |
2365 | ||
be2a5f71 DJ |
2366 | /* This type describes each known response to the qSupported |
2367 | packet. */ | |
2368 | struct protocol_feature | |
2369 | { | |
2370 | /* The name of this protocol feature. */ | |
2371 | const char *name; | |
2372 | ||
2373 | /* The default for this protocol feature. */ | |
2374 | enum packet_support default_support; | |
2375 | ||
2376 | /* The function to call when this feature is reported, or after | |
2377 | qSupported processing if the feature is not supported. | |
2378 | The first argument points to this structure. The second | |
2379 | argument indicates whether the packet requested support be | |
2380 | enabled, disabled, or probed (or the default, if this function | |
2381 | is being called at the end of processing and this feature was | |
2382 | not reported). The third argument may be NULL; if not NULL, it | |
2383 | is a NUL-terminated string taken from the packet following | |
2384 | this feature's name and an equals sign. */ | |
2385 | void (*func) (const struct protocol_feature *, enum packet_support, | |
2386 | const char *); | |
2387 | ||
2388 | /* The corresponding packet for this feature. Only used if | |
2389 | FUNC is remote_supported_packet. */ | |
2390 | int packet; | |
2391 | }; | |
2392 | ||
be2a5f71 DJ |
2393 | static void |
2394 | remote_supported_packet (const struct protocol_feature *feature, | |
2395 | enum packet_support support, | |
2396 | const char *argument) | |
2397 | { | |
2398 | if (argument) | |
2399 | { | |
2400 | warning (_("Remote qSupported response supplied an unexpected value for" | |
2401 | " \"%s\"."), feature->name); | |
2402 | return; | |
2403 | } | |
2404 | ||
2405 | if (remote_protocol_packets[feature->packet].support | |
2406 | == PACKET_SUPPORT_UNKNOWN) | |
2407 | remote_protocol_packets[feature->packet].support = support; | |
2408 | } | |
be2a5f71 DJ |
2409 | |
2410 | static void | |
2411 | remote_packet_size (const struct protocol_feature *feature, | |
2412 | enum packet_support support, const char *value) | |
2413 | { | |
2414 | struct remote_state *rs = get_remote_state (); | |
2415 | ||
2416 | int packet_size; | |
2417 | char *value_end; | |
2418 | ||
2419 | if (support != PACKET_ENABLE) | |
2420 | return; | |
2421 | ||
2422 | if (value == NULL || *value == '\0') | |
2423 | { | |
2424 | warning (_("Remote target reported \"%s\" without a size."), | |
2425 | feature->name); | |
2426 | return; | |
2427 | } | |
2428 | ||
2429 | errno = 0; | |
2430 | packet_size = strtol (value, &value_end, 16); | |
2431 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
2432 | { | |
2433 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
2434 | feature->name, value); | |
2435 | return; | |
2436 | } | |
2437 | ||
2438 | if (packet_size > MAX_REMOTE_PACKET_SIZE) | |
2439 | { | |
2440 | warning (_("limiting remote suggested packet size (%d bytes) to %d"), | |
2441 | packet_size, MAX_REMOTE_PACKET_SIZE); | |
2442 | packet_size = MAX_REMOTE_PACKET_SIZE; | |
2443 | } | |
2444 | ||
2445 | /* Record the new maximum packet size. */ | |
2446 | rs->explicit_packet_size = packet_size; | |
2447 | } | |
2448 | ||
2449 | static struct protocol_feature remote_protocol_features[] = { | |
0876f84a | 2450 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 2451 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 2452 | PACKET_qXfer_auxv }, |
23181151 DJ |
2453 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
2454 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
2455 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
2456 | PACKET_qXfer_libraries }, | |
fd79ecee | 2457 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 2458 | PACKET_qXfer_memory_map }, |
4de6483e UW |
2459 | { "qXfer:spu:read", PACKET_DISABLE, remote_supported_packet, |
2460 | PACKET_qXfer_spu_read }, | |
2461 | { "qXfer:spu:write", PACKET_DISABLE, remote_supported_packet, | |
2462 | PACKET_qXfer_spu_write }, | |
89be2091 DJ |
2463 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
2464 | PACKET_QPassSignals }, | |
be2a5f71 DJ |
2465 | }; |
2466 | ||
2467 | static void | |
2468 | remote_query_supported (void) | |
2469 | { | |
2470 | struct remote_state *rs = get_remote_state (); | |
2471 | char *next; | |
2472 | int i; | |
2473 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
2474 | ||
2475 | /* The packet support flags are handled differently for this packet | |
2476 | than for most others. We treat an error, a disabled packet, and | |
2477 | an empty response identically: any features which must be reported | |
2478 | to be used will be automatically disabled. An empty buffer | |
2479 | accomplishes this, since that is also the representation for a list | |
2480 | containing no features. */ | |
2481 | ||
2482 | rs->buf[0] = 0; | |
2483 | if (remote_protocol_packets[PACKET_qSupported].support != PACKET_DISABLE) | |
2484 | { | |
2485 | putpkt ("qSupported"); | |
2486 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2487 | ||
2488 | /* If an error occured, warn, but do not return - just reset the | |
2489 | buffer to empty and go on to disable features. */ | |
2490 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
2491 | == PACKET_ERROR) | |
2492 | { | |
2493 | warning (_("Remote failure reply: %s"), rs->buf); | |
2494 | rs->buf[0] = 0; | |
2495 | } | |
2496 | } | |
2497 | ||
2498 | memset (seen, 0, sizeof (seen)); | |
2499 | ||
2500 | next = rs->buf; | |
2501 | while (*next) | |
2502 | { | |
2503 | enum packet_support is_supported; | |
2504 | char *p, *end, *name_end, *value; | |
2505 | ||
2506 | /* First separate out this item from the rest of the packet. If | |
2507 | there's another item after this, we overwrite the separator | |
2508 | (terminated strings are much easier to work with). */ | |
2509 | p = next; | |
2510 | end = strchr (p, ';'); | |
2511 | if (end == NULL) | |
2512 | { | |
2513 | end = p + strlen (p); | |
2514 | next = end; | |
2515 | } | |
2516 | else | |
2517 | { | |
89be2091 DJ |
2518 | *end = '\0'; |
2519 | next = end + 1; | |
2520 | ||
be2a5f71 DJ |
2521 | if (end == p) |
2522 | { | |
2523 | warning (_("empty item in \"qSupported\" response")); | |
2524 | continue; | |
2525 | } | |
be2a5f71 DJ |
2526 | } |
2527 | ||
2528 | name_end = strchr (p, '='); | |
2529 | if (name_end) | |
2530 | { | |
2531 | /* This is a name=value entry. */ | |
2532 | is_supported = PACKET_ENABLE; | |
2533 | value = name_end + 1; | |
2534 | *name_end = '\0'; | |
2535 | } | |
2536 | else | |
2537 | { | |
2538 | value = NULL; | |
2539 | switch (end[-1]) | |
2540 | { | |
2541 | case '+': | |
2542 | is_supported = PACKET_ENABLE; | |
2543 | break; | |
2544 | ||
2545 | case '-': | |
2546 | is_supported = PACKET_DISABLE; | |
2547 | break; | |
2548 | ||
2549 | case '?': | |
2550 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
2551 | break; | |
2552 | ||
2553 | default: | |
2554 | warning (_("unrecognized item \"%s\" in \"qSupported\" response"), p); | |
2555 | continue; | |
2556 | } | |
2557 | end[-1] = '\0'; | |
2558 | } | |
2559 | ||
2560 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
2561 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
2562 | { | |
2563 | const struct protocol_feature *feature; | |
2564 | ||
2565 | seen[i] = 1; | |
2566 | feature = &remote_protocol_features[i]; | |
2567 | feature->func (feature, is_supported, value); | |
2568 | break; | |
2569 | } | |
2570 | } | |
2571 | ||
2572 | /* If we increased the packet size, make sure to increase the global | |
2573 | buffer size also. We delay this until after parsing the entire | |
2574 | qSupported packet, because this is the same buffer we were | |
2575 | parsing. */ | |
2576 | if (rs->buf_size < rs->explicit_packet_size) | |
2577 | { | |
2578 | rs->buf_size = rs->explicit_packet_size; | |
2579 | rs->buf = xrealloc (rs->buf, rs->buf_size); | |
2580 | } | |
2581 | ||
2582 | /* Handle the defaults for unmentioned features. */ | |
2583 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
2584 | if (!seen[i]) | |
2585 | { | |
2586 | const struct protocol_feature *feature; | |
2587 | ||
2588 | feature = &remote_protocol_features[i]; | |
2589 | feature->func (feature, feature->default_support, NULL); | |
2590 | } | |
2591 | } | |
2592 | ||
2593 | ||
c906108c | 2594 | static void |
fba45db2 | 2595 | remote_open_1 (char *name, int from_tty, struct target_ops *target, |
92d1e331 | 2596 | int extended_p, int async_p) |
c906108c | 2597 | { |
d01949b6 | 2598 | struct remote_state *rs = get_remote_state (); |
c906108c | 2599 | if (name == 0) |
8a3fe4f8 | 2600 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 2601 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 2602 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 2603 | |
23860348 | 2604 | /* See FIXME above. */ |
92d1e331 DJ |
2605 | if (!async_p) |
2606 | wait_forever_enabled_p = 1; | |
6426a772 | 2607 | |
2d717e4f DJ |
2608 | /* If we're connected to a running target, target_preopen will kill it. |
2609 | But if we're connected to a target system with no running process, | |
2610 | then we will still be connected when it returns. Ask this question | |
2611 | first, before target_preopen has a chance to kill anything. */ | |
2612 | if (remote_desc != NULL && !target_has_execution) | |
2613 | { | |
2614 | if (!from_tty | |
2615 | || query (_("Already connected to a remote target. Disconnect? "))) | |
2616 | pop_target (); | |
2617 | else | |
2618 | error (_("Still connected.")); | |
2619 | } | |
2620 | ||
c906108c SS |
2621 | target_preopen (from_tty); |
2622 | ||
2623 | unpush_target (target); | |
2624 | ||
2d717e4f DJ |
2625 | /* This time without a query. If we were connected to an |
2626 | extended-remote target and target_preopen killed the running | |
2627 | process, we may still be connected. If we are starting "target | |
2628 | remote" now, the extended-remote target will not have been | |
2629 | removed by unpush_target. */ | |
2630 | if (remote_desc != NULL && !target_has_execution) | |
2631 | pop_target (); | |
2632 | ||
89be2091 DJ |
2633 | /* Make sure we send the passed signals list the next time we resume. */ |
2634 | xfree (last_pass_packet); | |
2635 | last_pass_packet = NULL; | |
2636 | ||
ad9a8f3f | 2637 | remote_fileio_reset (); |
1dd41f16 NS |
2638 | reopen_exec_file (); |
2639 | reread_symbols (); | |
2640 | ||
9db8d71f | 2641 | remote_desc = remote_serial_open (name); |
c906108c SS |
2642 | if (!remote_desc) |
2643 | perror_with_name (name); | |
2644 | ||
2645 | if (baud_rate != -1) | |
2646 | { | |
2cd58942 | 2647 | if (serial_setbaudrate (remote_desc, baud_rate)) |
c906108c | 2648 | { |
9b74d5d3 KB |
2649 | /* The requested speed could not be set. Error out to |
2650 | top level after closing remote_desc. Take care to | |
2651 | set remote_desc to NULL to avoid closing remote_desc | |
2652 | more than once. */ | |
2cd58942 | 2653 | serial_close (remote_desc); |
9b74d5d3 | 2654 | remote_desc = NULL; |
c906108c SS |
2655 | perror_with_name (name); |
2656 | } | |
2657 | } | |
2658 | ||
2cd58942 | 2659 | serial_raw (remote_desc); |
c906108c SS |
2660 | |
2661 | /* If there is something sitting in the buffer we might take it as a | |
2662 | response to a command, which would be bad. */ | |
2cd58942 | 2663 | serial_flush_input (remote_desc); |
c906108c SS |
2664 | |
2665 | if (from_tty) | |
2666 | { | |
2667 | puts_filtered ("Remote debugging using "); | |
2668 | puts_filtered (name); | |
2669 | puts_filtered ("\n"); | |
2670 | } | |
23860348 | 2671 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 2672 | |
2d717e4f DJ |
2673 | /* Assume that the target is running, unless we learn otherwise. */ |
2674 | target_mark_running (target); | |
2675 | ||
be2a5f71 DJ |
2676 | /* Reset the target state; these things will be queried either by |
2677 | remote_query_supported or as they are needed. */ | |
d471ea57 | 2678 | init_all_packet_configs (); |
be2a5f71 | 2679 | rs->explicit_packet_size = 0; |
802188a7 | 2680 | |
c5aa993b | 2681 | general_thread = -2; |
cce74817 | 2682 | continue_thread = -2; |
c906108c | 2683 | |
9d1f7ab2 MS |
2684 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
2685 | use_threadinfo_query = 1; | |
2686 | use_threadextra_query = 1; | |
2687 | ||
be2a5f71 DJ |
2688 | /* The first packet we send to the target is the optional "supported |
2689 | packets" request. If the target can answer this, it will tell us | |
2690 | which later probes to skip. */ | |
2691 | remote_query_supported (); | |
2692 | ||
424163ea DJ |
2693 | /* Next, if the target can specify a description, read it. We do |
2694 | this before anything involving memory or registers. */ | |
2695 | target_find_description (); | |
2696 | ||
92d1e331 DJ |
2697 | if (async_p) |
2698 | { | |
23860348 | 2699 | /* With this target we start out by owning the terminal. */ |
92d1e331 DJ |
2700 | remote_async_terminal_ours_p = 1; |
2701 | ||
2702 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
2703 | assumed that the target is already ready and able to respond to | |
2704 | requests. Unfortunately remote_start_remote() eventually calls | |
2705 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets | |
2706 | around this. Eventually a mechanism that allows | |
2707 | wait_for_inferior() to expect/get timeouts will be | |
23860348 | 2708 | implemented. */ |
92d1e331 DJ |
2709 | wait_forever_enabled_p = 0; |
2710 | } | |
2711 | ||
23860348 | 2712 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 2713 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 2714 | |
36918e70 | 2715 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
2716 | target (we'd otherwise be in an inconsistent state) and then |
2717 | propogate the error on up the exception chain. This ensures that | |
2718 | the caller doesn't stumble along blindly assuming that the | |
2719 | function succeeded. The CLI doesn't have this problem but other | |
2720 | UI's, such as MI do. | |
36918e70 AC |
2721 | |
2722 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
2723 | this function should return an error indication letting the | |
ce2826aa | 2724 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
2725 | ``target remote'' is directly wired to this function making that |
2726 | impossible. On a positive note, the CLI side of this problem has | |
2727 | been fixed - the function set_cmd_context() makes it possible for | |
2728 | all the ``target ....'' commands to share a common callback | |
2729 | function. See cli-dump.c. */ | |
109c3e39 | 2730 | { |
2d717e4f DJ |
2731 | struct gdb_exception ex; |
2732 | struct start_remote_args args; | |
2733 | ||
2734 | args.from_tty = from_tty; | |
2735 | args.target = target; | |
2736 | args.extended_p = extended_p; | |
2737 | ||
2738 | ex = catch_exception (uiout, remote_start_remote, &args, RETURN_MASK_ALL); | |
109c3e39 AC |
2739 | if (ex.reason < 0) |
2740 | { | |
2741 | pop_target (); | |
2742 | if (async_p) | |
2743 | wait_forever_enabled_p = 1; | |
2744 | throw_exception (ex); | |
2745 | } | |
2746 | } | |
c906108c | 2747 | |
92d1e331 DJ |
2748 | if (async_p) |
2749 | wait_forever_enabled_p = 1; | |
6426a772 JM |
2750 | |
2751 | if (extended_p) | |
43ff13b4 | 2752 | { |
6240bebf | 2753 | /* Tell the remote that we are using the extended protocol. */ |
6426a772 | 2754 | putpkt ("!"); |
6d820c5c | 2755 | getpkt (&rs->buf, &rs->buf_size, 0); |
43ff13b4 | 2756 | } |
a77053c2 | 2757 | |
2d717e4f DJ |
2758 | /* If we connected to a live target, do some additional setup. */ |
2759 | if (target_has_execution) | |
2760 | { | |
2761 | if (exec_bfd) /* No use without an exec file. */ | |
2762 | remote_check_symbols (symfile_objfile); | |
2763 | } | |
43ff13b4 JM |
2764 | } |
2765 | ||
c906108c SS |
2766 | /* This takes a program previously attached to and detaches it. After |
2767 | this is done, GDB can be used to debug some other program. We | |
2768 | better not have left any breakpoints in the target program or it'll | |
2769 | die when it hits one. */ | |
2770 | ||
2771 | static void | |
2d717e4f | 2772 | remote_detach_1 (char *args, int from_tty, int extended) |
c906108c | 2773 | { |
d01949b6 | 2774 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2775 | |
2776 | if (args) | |
8a3fe4f8 | 2777 | error (_("Argument given to \"detach\" when remotely debugging.")); |
c906108c | 2778 | |
2d717e4f DJ |
2779 | if (!target_has_execution) |
2780 | error (_("No process to detach from.")); | |
2781 | ||
c906108c | 2782 | /* Tell the remote target to detach. */ |
6d820c5c | 2783 | strcpy (rs->buf, "D"); |
4ddda9b5 PA |
2784 | putpkt (rs->buf); |
2785 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2786 | ||
2787 | if (rs->buf[0] == 'E') | |
2788 | error (_("Can't detach process.")); | |
c906108c | 2789 | |
23860348 | 2790 | /* Unregister the file descriptor from the event loop. */ |
6ad8ae5c DJ |
2791 | if (target_is_async_p ()) |
2792 | serial_async (remote_desc, NULL, 0); | |
2793 | ||
cca728d0 | 2794 | target_mourn_inferior (); |
c906108c | 2795 | if (from_tty) |
2d717e4f DJ |
2796 | { |
2797 | if (extended) | |
2798 | puts_filtered ("Detached from remote process.\n"); | |
2799 | else | |
2800 | puts_filtered ("Ending remote debugging.\n"); | |
2801 | } | |
2802 | } | |
2803 | ||
2804 | static void | |
2805 | remote_detach (char *args, int from_tty) | |
2806 | { | |
2807 | remote_detach_1 (args, from_tty, 0); | |
2808 | } | |
2809 | ||
2810 | static void | |
2811 | extended_remote_detach (char *args, int from_tty) | |
2812 | { | |
2813 | remote_detach_1 (args, from_tty, 1); | |
c906108c SS |
2814 | } |
2815 | ||
6ad8ae5c DJ |
2816 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
2817 | ||
43ff13b4 | 2818 | static void |
597320e7 | 2819 | remote_disconnect (struct target_ops *target, char *args, int from_tty) |
43ff13b4 | 2820 | { |
43ff13b4 | 2821 | if (args) |
2d717e4f | 2822 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 2823 | |
23860348 | 2824 | /* Unregister the file descriptor from the event loop. */ |
ed9a39eb | 2825 | if (target_is_async_p ()) |
2cd58942 | 2826 | serial_async (remote_desc, NULL, 0); |
43ff13b4 | 2827 | |
2d717e4f DJ |
2828 | /* Make sure we unpush even the extended remote targets; mourn |
2829 | won't do it. So call remote_mourn_1 directly instead of | |
2830 | target_mourn_inferior. */ | |
2831 | remote_mourn_1 (target); | |
2832 | ||
43ff13b4 JM |
2833 | if (from_tty) |
2834 | puts_filtered ("Ending remote debugging.\n"); | |
2835 | } | |
2836 | ||
2d717e4f DJ |
2837 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
2838 | be chatty about it. */ | |
2839 | ||
2840 | static void | |
2841 | extended_remote_attach_1 (struct target_ops *target, char *args, int from_tty) | |
2842 | { | |
2843 | struct remote_state *rs = get_remote_state (); | |
2844 | pid_t pid; | |
2845 | char *dummy; | |
2846 | ||
2847 | if (!args) | |
2848 | error_no_arg (_("process-id to attach")); | |
2849 | ||
2850 | dummy = args; | |
2851 | pid = strtol (args, &dummy, 0); | |
2852 | /* Some targets don't set errno on errors, grrr! */ | |
2853 | if (pid == 0 && args == dummy) | |
2854 | error (_("Illegal process-id: %s."), args); | |
2855 | ||
2856 | if (remote_protocol_packets[PACKET_vAttach].support == PACKET_DISABLE) | |
2857 | error (_("This target does not support attaching to a process")); | |
2858 | ||
2859 | sprintf (rs->buf, "vAttach;%x", pid); | |
2860 | putpkt (rs->buf); | |
2861 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2862 | ||
2863 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vAttach]) == PACKET_OK) | |
2864 | { | |
2865 | if (from_tty) | |
2866 | printf_unfiltered (_("Attached to %s\n"), | |
2867 | target_pid_to_str (pid_to_ptid (pid))); | |
2868 | ||
2869 | /* We have a wait response; reuse it. */ | |
2870 | rs->cached_wait_status = 1; | |
2871 | } | |
2872 | else if (remote_protocol_packets[PACKET_vAttach].support == PACKET_DISABLE) | |
2873 | error (_("This target does not support attaching to a process")); | |
2874 | else | |
2875 | error (_("Attaching to %s failed"), | |
2876 | target_pid_to_str (pid_to_ptid (pid))); | |
2877 | ||
2878 | target_mark_running (target); | |
2879 | inferior_ptid = pid_to_ptid (pid); | |
df7df359 | 2880 | attach_flag = 1; |
2d717e4f DJ |
2881 | } |
2882 | ||
2883 | static void | |
2884 | extended_remote_attach (char *args, int from_tty) | |
2885 | { | |
2886 | extended_remote_attach_1 (&extended_remote_ops, args, from_tty); | |
2887 | } | |
2888 | ||
2889 | static void | |
2890 | extended_async_remote_attach (char *args, int from_tty) | |
2891 | { | |
2892 | extended_remote_attach_1 (&extended_async_remote_ops, args, from_tty); | |
2893 | } | |
2894 | ||
c906108c SS |
2895 | /* Convert hex digit A to a number. */ |
2896 | ||
30559e10 | 2897 | static int |
fba45db2 | 2898 | fromhex (int a) |
c906108c SS |
2899 | { |
2900 | if (a >= '0' && a <= '9') | |
2901 | return a - '0'; | |
2902 | else if (a >= 'a' && a <= 'f') | |
2903 | return a - 'a' + 10; | |
2904 | else if (a >= 'A' && a <= 'F') | |
2905 | return a - 'A' + 10; | |
c5aa993b | 2906 | else |
8a3fe4f8 | 2907 | error (_("Reply contains invalid hex digit %d"), a); |
c906108c SS |
2908 | } |
2909 | ||
30559e10 | 2910 | static int |
cfd77fa1 | 2911 | hex2bin (const char *hex, gdb_byte *bin, int count) |
30559e10 MS |
2912 | { |
2913 | int i; | |
2914 | ||
30559e10 MS |
2915 | for (i = 0; i < count; i++) |
2916 | { | |
2917 | if (hex[0] == 0 || hex[1] == 0) | |
2918 | { | |
2919 | /* Hex string is short, or of uneven length. | |
23860348 | 2920 | Return the count that has been converted so far. */ |
30559e10 MS |
2921 | return i; |
2922 | } | |
2923 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); | |
2924 | hex += 2; | |
2925 | } | |
2926 | return i; | |
2927 | } | |
2928 | ||
c906108c SS |
2929 | /* Convert number NIB to a hex digit. */ |
2930 | ||
2931 | static int | |
fba45db2 | 2932 | tohex (int nib) |
c906108c SS |
2933 | { |
2934 | if (nib < 10) | |
c5aa993b | 2935 | return '0' + nib; |
c906108c | 2936 | else |
c5aa993b | 2937 | return 'a' + nib - 10; |
c906108c | 2938 | } |
30559e10 MS |
2939 | |
2940 | static int | |
cfd77fa1 | 2941 | bin2hex (const gdb_byte *bin, char *hex, int count) |
30559e10 MS |
2942 | { |
2943 | int i; | |
23860348 | 2944 | /* May use a length, or a nul-terminated string as input. */ |
30559e10 | 2945 | if (count == 0) |
cfd77fa1 | 2946 | count = strlen ((char *) bin); |
30559e10 MS |
2947 | |
2948 | for (i = 0; i < count; i++) | |
2949 | { | |
2950 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
2951 | *hex++ = tohex (*bin++ & 0xf); | |
2952 | } | |
2953 | *hex = 0; | |
2954 | return i; | |
2955 | } | |
c906108c | 2956 | \f |
506fb367 DJ |
2957 | /* Check for the availability of vCont. This function should also check |
2958 | the response. */ | |
c906108c SS |
2959 | |
2960 | static void | |
6d820c5c | 2961 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 2962 | { |
2e9f7625 | 2963 | char *buf; |
6d820c5c | 2964 | |
2e9f7625 DJ |
2965 | strcpy (rs->buf, "vCont?"); |
2966 | putpkt (rs->buf); | |
6d820c5c | 2967 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2968 | buf = rs->buf; |
c906108c | 2969 | |
506fb367 DJ |
2970 | /* Make sure that the features we assume are supported. */ |
2971 | if (strncmp (buf, "vCont", 5) == 0) | |
2972 | { | |
2973 | char *p = &buf[5]; | |
2974 | int support_s, support_S, support_c, support_C; | |
2975 | ||
2976 | support_s = 0; | |
2977 | support_S = 0; | |
2978 | support_c = 0; | |
2979 | support_C = 0; | |
2980 | while (p && *p == ';') | |
2981 | { | |
2982 | p++; | |
2983 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2984 | support_s = 1; | |
2985 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2986 | support_S = 1; | |
2987 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2988 | support_c = 1; | |
2989 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2990 | support_C = 1; | |
2991 | ||
2992 | p = strchr (p, ';'); | |
2993 | } | |
c906108c | 2994 | |
506fb367 DJ |
2995 | /* If s, S, c, and C are not all supported, we can't use vCont. Clearing |
2996 | BUF will make packet_ok disable the packet. */ | |
2997 | if (!support_s || !support_S || !support_c || !support_C) | |
2998 | buf[0] = 0; | |
2999 | } | |
c906108c | 3000 | |
444abaca | 3001 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 3002 | } |
c906108c | 3003 | |
506fb367 DJ |
3004 | /* Resume the remote inferior by using a "vCont" packet. The thread |
3005 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
3006 | resumed thread should be single-stepped and/or signalled. If PTID's | |
3007 | PID is -1, then all threads are resumed; the thread to be stepped and/or | |
3008 | signalled is given in the global INFERIOR_PTID. This function returns | |
3009 | non-zero iff it resumes the inferior. | |
44eaed12 | 3010 | |
506fb367 DJ |
3011 | This function issues a strict subset of all possible vCont commands at the |
3012 | moment. */ | |
44eaed12 | 3013 | |
506fb367 DJ |
3014 | static int |
3015 | remote_vcont_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
3016 | { | |
3017 | struct remote_state *rs = get_remote_state (); | |
3018 | int pid = PIDGET (ptid); | |
2d717e4f | 3019 | char *outbuf; |
506fb367 | 3020 | struct cleanup *old_cleanup; |
44eaed12 | 3021 | |
444abaca | 3022 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 3023 | remote_vcont_probe (rs); |
44eaed12 | 3024 | |
444abaca | 3025 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_DISABLE) |
6d820c5c | 3026 | return 0; |
44eaed12 | 3027 | |
506fb367 DJ |
3028 | /* If we could generate a wider range of packets, we'd have to worry |
3029 | about overflowing BUF. Should there be a generic | |
3030 | "multi-part-packet" packet? */ | |
3031 | ||
3032 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) | |
c906108c | 3033 | { |
506fb367 DJ |
3034 | /* MAGIC_NULL_PTID means that we don't have any active threads, so we |
3035 | don't have any PID numbers the inferior will understand. Make sure | |
3036 | to only send forms that do not specify a PID. */ | |
3037 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d | 3038 | outbuf = xstrprintf ("vCont;S%02x", siggnal); |
506fb367 | 3039 | else if (step) |
2963ee1d | 3040 | outbuf = xstrprintf ("vCont;s"); |
506fb367 | 3041 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d | 3042 | outbuf = xstrprintf ("vCont;C%02x", siggnal); |
506fb367 | 3043 | else |
2963ee1d | 3044 | outbuf = xstrprintf ("vCont;c"); |
506fb367 DJ |
3045 | } |
3046 | else if (pid == -1) | |
3047 | { | |
3048 | /* Resume all threads, with preference for INFERIOR_PTID. */ | |
3049 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d DJ |
3050 | outbuf = xstrprintf ("vCont;S%02x:%x;c", siggnal, |
3051 | PIDGET (inferior_ptid)); | |
506fb367 | 3052 | else if (step) |
2963ee1d | 3053 | outbuf = xstrprintf ("vCont;s:%x;c", PIDGET (inferior_ptid)); |
506fb367 | 3054 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d DJ |
3055 | outbuf = xstrprintf ("vCont;C%02x:%x;c", siggnal, |
3056 | PIDGET (inferior_ptid)); | |
506fb367 | 3057 | else |
2963ee1d | 3058 | outbuf = xstrprintf ("vCont;c"); |
c906108c SS |
3059 | } |
3060 | else | |
506fb367 DJ |
3061 | { |
3062 | /* Scheduler locking; resume only PTID. */ | |
3063 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d | 3064 | outbuf = xstrprintf ("vCont;S%02x:%x", siggnal, pid); |
506fb367 | 3065 | else if (step) |
2963ee1d | 3066 | outbuf = xstrprintf ("vCont;s:%x", pid); |
506fb367 | 3067 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d | 3068 | outbuf = xstrprintf ("vCont;C%02x:%x", siggnal, pid); |
506fb367 | 3069 | else |
2963ee1d | 3070 | outbuf = xstrprintf ("vCont;c:%x", pid); |
506fb367 | 3071 | } |
c906108c | 3072 | |
ea9c271d | 3073 | gdb_assert (outbuf && strlen (outbuf) < get_remote_packet_size ()); |
6d820c5c | 3074 | old_cleanup = make_cleanup (xfree, outbuf); |
2963ee1d DJ |
3075 | |
3076 | putpkt (outbuf); | |
506fb367 DJ |
3077 | |
3078 | do_cleanups (old_cleanup); | |
3079 | ||
3080 | return 1; | |
c906108c | 3081 | } |
43ff13b4 | 3082 | |
506fb367 DJ |
3083 | /* Tell the remote machine to resume. */ |
3084 | ||
3085 | static enum target_signal last_sent_signal = TARGET_SIGNAL_0; | |
3086 | ||
3087 | static int last_sent_step; | |
3088 | ||
43ff13b4 | 3089 | static void |
506fb367 | 3090 | remote_resume (ptid_t ptid, int step, enum target_signal siggnal) |
43ff13b4 | 3091 | { |
d01949b6 | 3092 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 3093 | char *buf; |
39f77062 | 3094 | int pid = PIDGET (ptid); |
43ff13b4 | 3095 | |
43ff13b4 JM |
3096 | last_sent_signal = siggnal; |
3097 | last_sent_step = step; | |
3098 | ||
3099 | /* A hook for when we need to do something at the last moment before | |
3100 | resumption. */ | |
9a4105ab AC |
3101 | if (deprecated_target_resume_hook) |
3102 | (*deprecated_target_resume_hook) (); | |
43ff13b4 | 3103 | |
89be2091 DJ |
3104 | /* Update the inferior on signals to silently pass, if they've changed. */ |
3105 | remote_pass_signals (); | |
3106 | ||
506fb367 DJ |
3107 | /* The vCont packet doesn't need to specify threads via Hc. */ |
3108 | if (remote_vcont_resume (ptid, step, siggnal)) | |
3109 | return; | |
3110 | ||
3111 | /* All other supported resume packets do use Hc, so call set_thread. */ | |
3112 | if (pid == -1) | |
23860348 | 3113 | set_thread (0, 0); /* Run any thread. */ |
506fb367 | 3114 | else |
23860348 | 3115 | set_thread (pid, 0); /* Run this thread. */ |
506fb367 | 3116 | |
2e9f7625 | 3117 | buf = rs->buf; |
43ff13b4 JM |
3118 | if (siggnal != TARGET_SIGNAL_0) |
3119 | { | |
3120 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 3121 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 3122 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
3123 | buf[3] = '\0'; |
3124 | } | |
3125 | else | |
c5aa993b | 3126 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 3127 | |
44eaed12 | 3128 | putpkt (buf); |
506fb367 DJ |
3129 | } |
3130 | ||
23860348 | 3131 | /* Same as remote_resume, but with async support. */ |
506fb367 DJ |
3132 | static void |
3133 | remote_async_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
3134 | { | |
3135 | remote_resume (ptid, step, siggnal); | |
43ff13b4 | 3136 | |
2acceee2 JM |
3137 | /* We are about to start executing the inferior, let's register it |
3138 | with the event loop. NOTE: this is the one place where all the | |
3139 | execution commands end up. We could alternatively do this in each | |
23860348 | 3140 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
3141 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
3142 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 3143 | NOT asynchronously. */ |
362646f5 | 3144 | if (target_can_async_p ()) |
2acceee2 | 3145 | target_async (inferior_event_handler, 0); |
23860348 | 3146 | /* Tell the world that the target is now executing. */ |
2acceee2 JM |
3147 | /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set |
3148 | this? Instead, should the client of target just assume (for | |
3149 | async targets) that the target is going to start executing? Is | |
3150 | this information already found in the continuation block? */ | |
ed9a39eb | 3151 | if (target_is_async_p ()) |
2acceee2 | 3152 | target_executing = 1; |
43ff13b4 | 3153 | } |
c906108c | 3154 | \f |
43ff13b4 JM |
3155 | |
3156 | /* Set up the signal handler for SIGINT, while the target is | |
23860348 | 3157 | executing, ovewriting the 'regular' SIGINT signal handler. */ |
43ff13b4 | 3158 | static void |
fba45db2 | 3159 | initialize_sigint_signal_handler (void) |
43ff13b4 | 3160 | { |
c5aa993b | 3161 | sigint_remote_token = |
43ff13b4 JM |
3162 | create_async_signal_handler (async_remote_interrupt, NULL); |
3163 | signal (SIGINT, handle_remote_sigint); | |
3164 | } | |
3165 | ||
23860348 | 3166 | /* Signal handler for SIGINT, while the target is executing. */ |
43ff13b4 | 3167 | static void |
fba45db2 | 3168 | handle_remote_sigint (int sig) |
43ff13b4 JM |
3169 | { |
3170 | signal (sig, handle_remote_sigint_twice); | |
c5aa993b | 3171 | sigint_remote_twice_token = |
43ff13b4 JM |
3172 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
3173 | mark_async_signal_handler_wrapper (sigint_remote_token); | |
3174 | } | |
3175 | ||
3176 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
3177 | sent once. It will take effect the second time that the user sends | |
23860348 | 3178 | a ^C. */ |
43ff13b4 | 3179 | static void |
fba45db2 | 3180 | handle_remote_sigint_twice (int sig) |
43ff13b4 JM |
3181 | { |
3182 | signal (sig, handle_sigint); | |
c5aa993b | 3183 | sigint_remote_twice_token = |
2df3850c | 3184 | create_async_signal_handler (inferior_event_handler_wrapper, NULL); |
43ff13b4 JM |
3185 | mark_async_signal_handler_wrapper (sigint_remote_twice_token); |
3186 | } | |
3187 | ||
6426a772 | 3188 | /* Perform the real interruption of the target execution, in response |
23860348 | 3189 | to a ^C. */ |
c5aa993b | 3190 | static void |
fba45db2 | 3191 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
3192 | { |
3193 | if (remote_debug) | |
3194 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
3195 | ||
3196 | target_stop (); | |
3197 | } | |
3198 | ||
3199 | /* Perform interrupt, if the first attempt did not succeed. Just give | |
23860348 | 3200 | up on the target alltogether. */ |
2df3850c | 3201 | void |
fba45db2 | 3202 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 3203 | { |
2df3850c JM |
3204 | if (remote_debug) |
3205 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt_twice called\n"); | |
6426a772 | 3206 | /* Do something only if the target was not killed by the previous |
23860348 | 3207 | cntl-C. */ |
6426a772 JM |
3208 | if (target_executing) |
3209 | { | |
3210 | interrupt_query (); | |
3211 | signal (SIGINT, handle_remote_sigint); | |
3212 | } | |
43ff13b4 JM |
3213 | } |
3214 | ||
3215 | /* Reinstall the usual SIGINT handlers, after the target has | |
23860348 | 3216 | stopped. */ |
6426a772 JM |
3217 | static void |
3218 | cleanup_sigint_signal_handler (void *dummy) | |
43ff13b4 JM |
3219 | { |
3220 | signal (SIGINT, handle_sigint); | |
3221 | if (sigint_remote_twice_token) | |
d5d6fca5 | 3222 | delete_async_signal_handler (&sigint_remote_twice_token); |
43ff13b4 | 3223 | if (sigint_remote_token) |
d5d6fca5 | 3224 | delete_async_signal_handler (&sigint_remote_token); |
43ff13b4 JM |
3225 | } |
3226 | ||
c906108c SS |
3227 | /* Send ^C to target to halt it. Target will respond, and send us a |
3228 | packet. */ | |
507f3c78 | 3229 | static void (*ofunc) (int); |
c906108c | 3230 | |
7a292a7a SS |
3231 | /* The command line interface's stop routine. This function is installed |
3232 | as a signal handler for SIGINT. The first time a user requests a | |
3233 | stop, we call remote_stop to send a break or ^C. If there is no | |
3234 | response from the target (it didn't stop when the user requested it), | |
23860348 | 3235 | we ask the user if he'd like to detach from the target. */ |
c906108c | 3236 | static void |
fba45db2 | 3237 | remote_interrupt (int signo) |
c906108c | 3238 | { |
23860348 | 3239 | /* If this doesn't work, try more severe steps. */ |
7a292a7a SS |
3240 | signal (signo, remote_interrupt_twice); |
3241 | ||
3242 | if (remote_debug) | |
0f71a2f6 | 3243 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); |
7a292a7a SS |
3244 | |
3245 | target_stop (); | |
3246 | } | |
3247 | ||
3248 | /* The user typed ^C twice. */ | |
3249 | ||
3250 | static void | |
fba45db2 | 3251 | remote_interrupt_twice (int signo) |
7a292a7a SS |
3252 | { |
3253 | signal (signo, ofunc); | |
3254 | interrupt_query (); | |
c906108c SS |
3255 | signal (signo, remote_interrupt); |
3256 | } | |
7a292a7a SS |
3257 | |
3258 | /* This is the generic stop called via the target vector. When a target | |
3259 | interrupt is requested, either by the command line or the GUI, we | |
23860348 | 3260 | will eventually end up here. */ |
c906108c | 3261 | static void |
fba45db2 | 3262 | remote_stop (void) |
c906108c | 3263 | { |
7a292a7a SS |
3264 | /* Send a break or a ^C, depending on user preference. */ |
3265 | if (remote_debug) | |
0f71a2f6 | 3266 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 3267 | |
7a292a7a | 3268 | if (remote_break) |
2cd58942 | 3269 | serial_send_break (remote_desc); |
c906108c | 3270 | else |
2cd58942 | 3271 | serial_write (remote_desc, "\003", 1); |
c906108c SS |
3272 | } |
3273 | ||
3274 | /* Ask the user what to do when an interrupt is received. */ | |
3275 | ||
3276 | static void | |
fba45db2 | 3277 | interrupt_query (void) |
c906108c SS |
3278 | { |
3279 | target_terminal_ours (); | |
3280 | ||
3281 | if (query ("Interrupted while waiting for the program.\n\ | |
3282 | Give up (and stop debugging it)? ")) | |
3283 | { | |
3284 | target_mourn_inferior (); | |
315a522e | 3285 | deprecated_throw_reason (RETURN_QUIT); |
c906108c SS |
3286 | } |
3287 | ||
3288 | target_terminal_inferior (); | |
3289 | } | |
3290 | ||
6426a772 JM |
3291 | /* Enable/disable target terminal ownership. Most targets can use |
3292 | terminal groups to control terminal ownership. Remote targets are | |
3293 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 3294 | is required. */ |
6426a772 JM |
3295 | |
3296 | static void | |
3297 | remote_async_terminal_inferior (void) | |
3298 | { | |
3299 | /* FIXME: cagney/1999-09-27: Shouldn't need to test for | |
3300 | sync_execution here. This function should only be called when | |
3301 | GDB is resuming the inferior in the forground. A background | |
3302 | resume (``run&'') should leave GDB in control of the terminal and | |
23860348 | 3303 | consequently should not call this code. */ |
6426a772 JM |
3304 | if (!sync_execution) |
3305 | return; | |
3306 | /* FIXME: cagney/1999-09-27: Closely related to the above. Make | |
3307 | calls target_terminal_*() idenpotent. The event-loop GDB talking | |
3308 | to an asynchronous target with a synchronous command calls this | |
3309 | function from both event-top.c and infrun.c/infcmd.c. Once GDB | |
3310 | stops trying to transfer the terminal to the target when it | |
3311 | shouldn't this guard can go away. */ | |
3312 | if (!remote_async_terminal_ours_p) | |
3313 | return; | |
3314 | delete_file_handler (input_fd); | |
3315 | remote_async_terminal_ours_p = 0; | |
3316 | initialize_sigint_signal_handler (); | |
3317 | /* NOTE: At this point we could also register our selves as the | |
3318 | recipient of all input. Any characters typed could then be | |
23860348 | 3319 | passed on down to the target. */ |
6426a772 JM |
3320 | } |
3321 | ||
3322 | static void | |
3323 | remote_async_terminal_ours (void) | |
3324 | { | |
23860348 | 3325 | /* See FIXME in remote_async_terminal_inferior. */ |
6426a772 JM |
3326 | if (!sync_execution) |
3327 | return; | |
23860348 | 3328 | /* See FIXME in remote_async_terminal_inferior. */ |
6426a772 JM |
3329 | if (remote_async_terminal_ours_p) |
3330 | return; | |
3331 | cleanup_sigint_signal_handler (NULL); | |
3332 | add_file_handler (input_fd, stdin_event_handler, 0); | |
3333 | remote_async_terminal_ours_p = 1; | |
3334 | } | |
3335 | ||
c906108c SS |
3336 | /* If nonzero, ignore the next kill. */ |
3337 | ||
3338 | int kill_kludge; | |
3339 | ||
3340 | void | |
917317f4 | 3341 | remote_console_output (char *msg) |
c906108c SS |
3342 | { |
3343 | char *p; | |
3344 | ||
c5aa993b | 3345 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
3346 | { |
3347 | char tb[2]; | |
3348 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3349 | tb[0] = c; | |
3350 | tb[1] = 0; | |
43ff13b4 | 3351 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 3352 | } |
917317f4 | 3353 | gdb_flush (gdb_stdtarg); |
c906108c SS |
3354 | } |
3355 | ||
0f71a2f6 JM |
3356 | /* Wait until the remote machine stops, then return, |
3357 | storing status in STATUS just as `wait' would. | |
802188a7 | 3358 | Returns "pid", which in the case of a multi-threaded |
0f71a2f6 | 3359 | remote OS, is the thread-id. */ |
c906108c | 3360 | |
39f77062 KB |
3361 | static ptid_t |
3362 | remote_wait (ptid_t ptid, struct target_waitstatus *status) | |
c906108c | 3363 | { |
d01949b6 | 3364 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 3365 | struct remote_arch_state *rsa = get_remote_arch_state (); |
b2dd6311 | 3366 | ULONGEST thread_num = -1; |
3c3bea1c | 3367 | ULONGEST addr; |
cfa9d6d9 | 3368 | int solibs_changed = 0; |
c906108c SS |
3369 | |
3370 | status->kind = TARGET_WAITKIND_EXITED; | |
3371 | status->value.integer = 0; | |
3372 | ||
3373 | while (1) | |
3374 | { | |
2e9f7625 | 3375 | char *buf, *p; |
c906108c | 3376 | |
2d717e4f DJ |
3377 | if (rs->cached_wait_status) |
3378 | /* Use the cached wait status, but only once. */ | |
3379 | rs->cached_wait_status = 0; | |
3380 | else | |
9fa2223d | 3381 | { |
2d717e4f DJ |
3382 | ofunc = signal (SIGINT, remote_interrupt); |
3383 | /* If the user hit C-c before this packet, or between packets, | |
3384 | pretend that it was hit right here. */ | |
3385 | if (quit_flag) | |
3386 | { | |
3387 | quit_flag = 0; | |
3388 | remote_interrupt (SIGINT); | |
3389 | } | |
3390 | getpkt (&rs->buf, &rs->buf_size, 1); | |
3391 | signal (SIGINT, ofunc); | |
9fa2223d | 3392 | } |
c906108c | 3393 | |
2e9f7625 DJ |
3394 | buf = rs->buf; |
3395 | ||
c906108c | 3396 | /* This is a hook for when we need to do something (perhaps the |
c5aa993b | 3397 | collection of trace data) every time the target stops. */ |
9a4105ab AC |
3398 | if (deprecated_target_wait_loop_hook) |
3399 | (*deprecated_target_wait_loop_hook) (); | |
c906108c | 3400 | |
3c3bea1c GS |
3401 | remote_stopped_by_watchpoint_p = 0; |
3402 | ||
c906108c SS |
3403 | switch (buf[0]) |
3404 | { | |
23860348 | 3405 | case 'E': /* Error of some sort. */ |
8a3fe4f8 | 3406 | warning (_("Remote failure reply: %s"), buf); |
c906108c | 3407 | continue; |
23860348 | 3408 | case 'F': /* File-I/O request. */ |
449092f6 CV |
3409 | remote_fileio_request (buf); |
3410 | continue; | |
23860348 | 3411 | case 'T': /* Status with PC, SP, FP, ... */ |
c906108c | 3412 | { |
cfd77fa1 | 3413 | gdb_byte regs[MAX_REGISTER_SIZE]; |
c906108c | 3414 | |
23860348 | 3415 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
c906108c | 3416 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where |
c5aa993b JM |
3417 | ss = signal number |
3418 | n... = register number | |
3419 | r... = register contents | |
3420 | */ | |
c906108c SS |
3421 | p = &buf[3]; /* after Txx */ |
3422 | ||
3423 | while (*p) | |
3424 | { | |
cfd77fa1 | 3425 | char *p1; |
c906108c | 3426 | char *p_temp; |
97345198 | 3427 | int fieldsize; |
3c3bea1c GS |
3428 | LONGEST pnum = 0; |
3429 | ||
23860348 MS |
3430 | /* If the packet contains a register number save it in |
3431 | pnum and set p1 to point to the character following | |
3432 | it. Otherwise p1 points to p. */ | |
c906108c | 3433 | |
23860348 MS |
3434 | /* If this packet is an awatch packet, don't parse the |
3435 | 'a' as a register number. */ | |
3c3bea1c GS |
3436 | |
3437 | if (strncmp (p, "awatch", strlen("awatch")) != 0) | |
3438 | { | |
3439 | /* Read the ``P'' register number. */ | |
3440 | pnum = strtol (p, &p_temp, 16); | |
cfd77fa1 | 3441 | p1 = p_temp; |
3c3bea1c | 3442 | } |
802188a7 | 3443 | else |
3c3bea1c | 3444 | p1 = p; |
c906108c | 3445 | |
23860348 | 3446 | if (p1 == p) /* No register number present here. */ |
c906108c | 3447 | { |
cfd77fa1 | 3448 | p1 = strchr (p, ':'); |
c906108c | 3449 | if (p1 == NULL) |
670aa98f | 3450 | error (_("Malformed packet(a) (missing colon): %s\n\ |
8a3fe4f8 | 3451 | Packet: '%s'\n"), |
670aa98f | 3452 | p, buf); |
3c3bea1c | 3453 | if (strncmp (p, "thread", p1 - p) == 0) |
c906108c SS |
3454 | { |
3455 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
3456 | record_currthread (thread_num); | |
cfd77fa1 | 3457 | p = p_temp; |
c906108c | 3458 | } |
3c3bea1c GS |
3459 | else if ((strncmp (p, "watch", p1 - p) == 0) |
3460 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
3461 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
3462 | { | |
3463 | remote_stopped_by_watchpoint_p = 1; | |
3464 | p = unpack_varlen_hex (++p1, &addr); | |
3465 | remote_watch_data_address = (CORE_ADDR)addr; | |
3466 | } | |
cfa9d6d9 DJ |
3467 | else if (strncmp (p, "library", p1 - p) == 0) |
3468 | { | |
3469 | p1++; | |
3470 | p_temp = p1; | |
3471 | while (*p_temp && *p_temp != ';') | |
3472 | p_temp++; | |
3473 | ||
3474 | solibs_changed = 1; | |
3475 | p = p_temp; | |
3476 | } | |
3c3bea1c GS |
3477 | else |
3478 | { | |
3479 | /* Silently skip unknown optional info. */ | |
3480 | p_temp = strchr (p1 + 1, ';'); | |
3481 | if (p_temp) | |
cfd77fa1 | 3482 | p = p_temp; |
3c3bea1c | 3483 | } |
c906108c SS |
3484 | } |
3485 | else | |
3486 | { | |
ea9c271d | 3487 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); |
c906108c SS |
3488 | p = p1; |
3489 | ||
3490 | if (*p++ != ':') | |
8a3fe4f8 AC |
3491 | error (_("Malformed packet(b) (missing colon): %s\n\ |
3492 | Packet: '%s'\n"), | |
3fcb8548 | 3493 | p, buf); |
c906108c | 3494 | |
ad10f812 | 3495 | if (reg == NULL) |
8a3fe4f8 AC |
3496 | error (_("Remote sent bad register number %s: %s\n\ |
3497 | Packet: '%s'\n"), | |
3fcb8548 | 3498 | phex_nz (pnum, 0), p, buf); |
c906108c | 3499 | |
cfd77fa1 | 3500 | fieldsize = hex2bin (p, regs, |
2bc416ba | 3501 | register_size (current_gdbarch, |
23860348 | 3502 | reg->regnum)); |
97345198 | 3503 | p += 2 * fieldsize; |
2bc416ba | 3504 | if (fieldsize < register_size (current_gdbarch, |
23860348 | 3505 | reg->regnum)) |
8a3fe4f8 | 3506 | warning (_("Remote reply is too short: %s"), buf); |
594f7785 | 3507 | regcache_raw_supply (get_current_regcache (), |
23860348 | 3508 | reg->regnum, regs); |
c906108c SS |
3509 | } |
3510 | ||
3511 | if (*p++ != ';') | |
2bc416ba | 3512 | error (_("Remote register badly formatted: %s\nhere: %s"), |
23860348 | 3513 | buf, p); |
c906108c SS |
3514 | } |
3515 | } | |
3516 | /* fall through */ | |
23860348 | 3517 | case 'S': /* Old style status, just signal only. */ |
cfa9d6d9 DJ |
3518 | if (solibs_changed) |
3519 | status->kind = TARGET_WAITKIND_LOADED; | |
3520 | else | |
3521 | { | |
3522 | status->kind = TARGET_WAITKIND_STOPPED; | |
3523 | status->value.sig = (enum target_signal) | |
3524 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3525 | } | |
c906108c | 3526 | |
0f71a2f6 JM |
3527 | if (buf[3] == 'p') |
3528 | { | |
0f71a2f6 JM |
3529 | thread_num = strtol ((const char *) &buf[4], NULL, 16); |
3530 | record_currthread (thread_num); | |
3531 | } | |
c906108c | 3532 | goto got_status; |
23860348 | 3533 | case 'W': /* Target exited. */ |
c906108c SS |
3534 | { |
3535 | /* The remote process exited. */ | |
3536 | status->kind = TARGET_WAITKIND_EXITED; | |
3537 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
3538 | goto got_status; | |
3539 | } | |
3540 | case 'X': | |
3541 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
3542 | status->value.sig = (enum target_signal) | |
3543 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3544 | kill_kludge = 1; | |
3545 | ||
3546 | goto got_status; | |
23860348 | 3547 | case 'O': /* Console output. */ |
c906108c SS |
3548 | remote_console_output (buf + 1); |
3549 | continue; | |
3550 | case '\0': | |
3551 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3552 | { | |
3553 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3554 | the remote system doesn't support it. */ |
c906108c SS |
3555 | target_terminal_ours_for_output (); |
3556 | printf_filtered | |
3557 | ("Can't send signals to this remote system. %s not sent.\n", | |
3558 | target_signal_to_name (last_sent_signal)); | |
3559 | last_sent_signal = TARGET_SIGNAL_0; | |
3560 | target_terminal_inferior (); | |
3561 | ||
3562 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3563 | putpkt ((char *) buf); | |
3564 | continue; | |
3565 | } | |
3566 | /* else fallthrough */ | |
3567 | default: | |
8a3fe4f8 | 3568 | warning (_("Invalid remote reply: %s"), buf); |
c906108c SS |
3569 | continue; |
3570 | } | |
3571 | } | |
c5aa993b | 3572 | got_status: |
c906108c SS |
3573 | if (thread_num != -1) |
3574 | { | |
39f77062 | 3575 | return pid_to_ptid (thread_num); |
c906108c | 3576 | } |
39f77062 | 3577 | return inferior_ptid; |
c906108c SS |
3578 | } |
3579 | ||
23860348 | 3580 | /* Async version of remote_wait. */ |
39f77062 KB |
3581 | static ptid_t |
3582 | remote_async_wait (ptid_t ptid, struct target_waitstatus *status) | |
43ff13b4 | 3583 | { |
d01949b6 | 3584 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 3585 | struct remote_arch_state *rsa = get_remote_arch_state (); |
b2dd6311 | 3586 | ULONGEST thread_num = -1; |
3c3bea1c | 3587 | ULONGEST addr; |
cfa9d6d9 | 3588 | int solibs_changed = 0; |
43ff13b4 JM |
3589 | |
3590 | status->kind = TARGET_WAITKIND_EXITED; | |
3591 | status->value.integer = 0; | |
3592 | ||
3c3bea1c GS |
3593 | remote_stopped_by_watchpoint_p = 0; |
3594 | ||
43ff13b4 JM |
3595 | while (1) |
3596 | { | |
2e9f7625 | 3597 | char *buf, *p; |
c5aa993b | 3598 | |
2d717e4f DJ |
3599 | if (rs->cached_wait_status) |
3600 | /* Use the cached wait status, but only once. */ | |
3601 | rs->cached_wait_status = 0; | |
3602 | else | |
9fa2223d | 3603 | { |
2d717e4f | 3604 | if (!target_is_async_p ()) |
9fa2223d | 3605 | { |
2d717e4f DJ |
3606 | ofunc = signal (SIGINT, remote_interrupt); |
3607 | /* If the user hit C-c before this packet, or between packets, | |
3608 | pretend that it was hit right here. */ | |
3609 | if (quit_flag) | |
3610 | { | |
3611 | quit_flag = 0; | |
3612 | remote_interrupt (SIGINT); | |
3613 | } | |
9fa2223d | 3614 | } |
2d717e4f DJ |
3615 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
3616 | _never_ wait for ever -> test on target_is_async_p(). | |
3617 | However, before we do that we need to ensure that the caller | |
3618 | knows how to take the target into/out of async mode. */ | |
3619 | getpkt (&rs->buf, &rs->buf_size, wait_forever_enabled_p); | |
3620 | if (!target_is_async_p ()) | |
3621 | signal (SIGINT, ofunc); | |
9fa2223d | 3622 | } |
43ff13b4 | 3623 | |
2e9f7625 DJ |
3624 | buf = rs->buf; |
3625 | ||
43ff13b4 | 3626 | /* This is a hook for when we need to do something (perhaps the |
c5aa993b | 3627 | collection of trace data) every time the target stops. */ |
9a4105ab AC |
3628 | if (deprecated_target_wait_loop_hook) |
3629 | (*deprecated_target_wait_loop_hook) (); | |
43ff13b4 JM |
3630 | |
3631 | switch (buf[0]) | |
3632 | { | |
23860348 | 3633 | case 'E': /* Error of some sort. */ |
8a3fe4f8 | 3634 | warning (_("Remote failure reply: %s"), buf); |
43ff13b4 | 3635 | continue; |
23860348 | 3636 | case 'F': /* File-I/O request. */ |
449092f6 CV |
3637 | remote_fileio_request (buf); |
3638 | continue; | |
23860348 | 3639 | case 'T': /* Status with PC, SP, FP, ... */ |
43ff13b4 | 3640 | { |
cfd77fa1 | 3641 | gdb_byte regs[MAX_REGISTER_SIZE]; |
43ff13b4 | 3642 | |
23860348 | 3643 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
43ff13b4 | 3644 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where |
c5aa993b JM |
3645 | ss = signal number |
3646 | n... = register number | |
3647 | r... = register contents | |
3648 | */ | |
43ff13b4 JM |
3649 | p = &buf[3]; /* after Txx */ |
3650 | ||
3651 | while (*p) | |
3652 | { | |
cfd77fa1 | 3653 | char *p1; |
43ff13b4 | 3654 | char *p_temp; |
6c3f2dbf | 3655 | int fieldsize; |
3c3bea1c | 3656 | long pnum = 0; |
43ff13b4 | 3657 | |
23860348 MS |
3658 | /* If the packet contains a register number, save it |
3659 | in pnum and set p1 to point to the character | |
3660 | following it. Otherwise p1 points to p. */ | |
3c3bea1c GS |
3661 | |
3662 | /* If this packet is an awatch packet, don't parse the 'a' | |
3663 | as a register number. */ | |
802188a7 | 3664 | |
cfa9d6d9 | 3665 | if (strncmp (p, "awatch", strlen("awatch")) != 0) |
3c3bea1c GS |
3666 | { |
3667 | /* Read the register number. */ | |
3668 | pnum = strtol (p, &p_temp, 16); | |
cfd77fa1 | 3669 | p1 = p_temp; |
3c3bea1c | 3670 | } |
802188a7 | 3671 | else |
3c3bea1c | 3672 | p1 = p; |
43ff13b4 | 3673 | |
23860348 | 3674 | if (p1 == p) /* No register number present here. */ |
43ff13b4 | 3675 | { |
cfd77fa1 | 3676 | p1 = strchr (p, ':'); |
43ff13b4 | 3677 | if (p1 == NULL) |
8a3fe4f8 AC |
3678 | error (_("Malformed packet(a) (missing colon): %s\n\ |
3679 | Packet: '%s'\n"), | |
3fcb8548 | 3680 | p, buf); |
3c3bea1c | 3681 | if (strncmp (p, "thread", p1 - p) == 0) |
43ff13b4 JM |
3682 | { |
3683 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
3684 | record_currthread (thread_num); | |
cfd77fa1 | 3685 | p = p_temp; |
43ff13b4 | 3686 | } |
3c3bea1c GS |
3687 | else if ((strncmp (p, "watch", p1 - p) == 0) |
3688 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
3689 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
3690 | { | |
3691 | remote_stopped_by_watchpoint_p = 1; | |
3692 | p = unpack_varlen_hex (++p1, &addr); | |
3693 | remote_watch_data_address = (CORE_ADDR)addr; | |
3694 | } | |
cfa9d6d9 DJ |
3695 | else if (strncmp (p, "library", p1 - p) == 0) |
3696 | { | |
3697 | p1++; | |
3698 | p_temp = p1; | |
3699 | while (*p_temp && *p_temp != ';') | |
3700 | p_temp++; | |
3701 | ||
3702 | solibs_changed = 1; | |
3703 | p = p_temp; | |
3704 | } | |
3c3bea1c GS |
3705 | else |
3706 | { | |
3707 | /* Silently skip unknown optional info. */ | |
cfd77fa1 | 3708 | p_temp = strchr (p1 + 1, ';'); |
3c3bea1c GS |
3709 | if (p_temp) |
3710 | p = p_temp; | |
3711 | } | |
43ff13b4 | 3712 | } |
802188a7 | 3713 | |
43ff13b4 JM |
3714 | else |
3715 | { | |
ea9c271d | 3716 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); |
43ff13b4 | 3717 | p = p1; |
43ff13b4 | 3718 | if (*p++ != ':') |
8a3fe4f8 AC |
3719 | error (_("Malformed packet(b) (missing colon): %s\n\ |
3720 | Packet: '%s'\n"), | |
3fcb8548 | 3721 | p, buf); |
43ff13b4 | 3722 | |
ad10f812 | 3723 | if (reg == NULL) |
8a3fe4f8 AC |
3724 | error (_("Remote sent bad register number %ld: %s\n\ |
3725 | Packet: '%s'\n"), | |
3fcb8548 | 3726 | pnum, p, buf); |
43ff13b4 | 3727 | |
cfd77fa1 | 3728 | fieldsize = hex2bin (p, regs, |
2bc416ba | 3729 | register_size (current_gdbarch, |
23860348 | 3730 | reg->regnum)); |
6c3f2dbf | 3731 | p += 2 * fieldsize; |
2bc416ba | 3732 | if (fieldsize < register_size (current_gdbarch, |
23860348 | 3733 | reg->regnum)) |
8a3fe4f8 | 3734 | warning (_("Remote reply is too short: %s"), buf); |
594f7785 UW |
3735 | regcache_raw_supply (get_current_regcache (), |
3736 | reg->regnum, regs); | |
43ff13b4 JM |
3737 | } |
3738 | ||
3739 | if (*p++ != ';') | |
8a3fe4f8 | 3740 | error (_("Remote register badly formatted: %s\nhere: %s"), |
0a2cfde4 | 3741 | buf, p); |
43ff13b4 JM |
3742 | } |
3743 | } | |
3744 | /* fall through */ | |
23860348 | 3745 | case 'S': /* Old style status, just signal only. */ |
cfa9d6d9 DJ |
3746 | if (solibs_changed) |
3747 | status->kind = TARGET_WAITKIND_LOADED; | |
3748 | else | |
3749 | { | |
3750 | status->kind = TARGET_WAITKIND_STOPPED; | |
3751 | status->value.sig = (enum target_signal) | |
3752 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3753 | } | |
43ff13b4 JM |
3754 | |
3755 | if (buf[3] == 'p') | |
3756 | { | |
43ff13b4 JM |
3757 | thread_num = strtol ((const char *) &buf[4], NULL, 16); |
3758 | record_currthread (thread_num); | |
3759 | } | |
43ff13b4 | 3760 | goto got_status; |
23860348 | 3761 | case 'W': /* Target exited. */ |
43ff13b4 JM |
3762 | { |
3763 | /* The remote process exited. */ | |
3764 | status->kind = TARGET_WAITKIND_EXITED; | |
3765 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
3766 | goto got_status; | |
3767 | } | |
3768 | case 'X': | |
3769 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
3770 | status->value.sig = (enum target_signal) | |
3771 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3772 | kill_kludge = 1; | |
3773 | ||
3774 | goto got_status; | |
23860348 | 3775 | case 'O': /* Console output. */ |
43ff13b4 | 3776 | remote_console_output (buf + 1); |
c4093a6a | 3777 | /* Return immediately to the event loop. The event loop will |
23860348 | 3778 | still be waiting on the inferior afterwards. */ |
c4093a6a JM |
3779 | status->kind = TARGET_WAITKIND_IGNORE; |
3780 | goto got_status; | |
43ff13b4 JM |
3781 | case '\0': |
3782 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3783 | { | |
3784 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3785 | the remote system doesn't support it. */ |
43ff13b4 JM |
3786 | target_terminal_ours_for_output (); |
3787 | printf_filtered | |
3788 | ("Can't send signals to this remote system. %s not sent.\n", | |
3789 | target_signal_to_name (last_sent_signal)); | |
3790 | last_sent_signal = TARGET_SIGNAL_0; | |
3791 | target_terminal_inferior (); | |
3792 | ||
3793 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3794 | putpkt ((char *) buf); | |
3795 | continue; | |
3796 | } | |
3797 | /* else fallthrough */ | |
3798 | default: | |
8a3fe4f8 | 3799 | warning (_("Invalid remote reply: %s"), buf); |
43ff13b4 JM |
3800 | continue; |
3801 | } | |
3802 | } | |
c5aa993b | 3803 | got_status: |
43ff13b4 JM |
3804 | if (thread_num != -1) |
3805 | { | |
39f77062 | 3806 | return pid_to_ptid (thread_num); |
43ff13b4 | 3807 | } |
39f77062 | 3808 | return inferior_ptid; |
43ff13b4 JM |
3809 | } |
3810 | ||
74ca34ce | 3811 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 3812 | |
b96ec7ac | 3813 | static int |
56be3814 | 3814 | fetch_register_using_p (struct regcache *regcache, struct packet_reg *reg) |
b96ec7ac AC |
3815 | { |
3816 | struct remote_state *rs = get_remote_state (); | |
2e9f7625 | 3817 | char *buf, *p; |
b96ec7ac AC |
3818 | char regp[MAX_REGISTER_SIZE]; |
3819 | int i; | |
3820 | ||
74ca34ce DJ |
3821 | if (remote_protocol_packets[PACKET_p].support == PACKET_DISABLE) |
3822 | return 0; | |
3823 | ||
3824 | if (reg->pnum == -1) | |
3825 | return 0; | |
3826 | ||
2e9f7625 | 3827 | p = rs->buf; |
fcad0fa4 | 3828 | *p++ = 'p'; |
74ca34ce | 3829 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 3830 | *p++ = '\0'; |
6d820c5c | 3831 | remote_send (&rs->buf, &rs->buf_size); |
3f9a994c | 3832 | |
2e9f7625 DJ |
3833 | buf = rs->buf; |
3834 | ||
74ca34ce DJ |
3835 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_p])) |
3836 | { | |
3837 | case PACKET_OK: | |
3838 | break; | |
3839 | case PACKET_UNKNOWN: | |
3840 | return 0; | |
3841 | case PACKET_ERROR: | |
3842 | error (_("Could not fetch register \"%s\""), | |
4a22f64d | 3843 | gdbarch_register_name (get_regcache_arch (regcache), reg->regnum)); |
74ca34ce | 3844 | } |
3f9a994c JB |
3845 | |
3846 | /* If this register is unfetchable, tell the regcache. */ | |
3847 | if (buf[0] == 'x') | |
8480adf2 | 3848 | { |
56be3814 | 3849 | regcache_raw_supply (regcache, reg->regnum, NULL); |
8480adf2 | 3850 | return 1; |
b96ec7ac | 3851 | } |
b96ec7ac | 3852 | |
3f9a994c JB |
3853 | /* Otherwise, parse and supply the value. */ |
3854 | p = buf; | |
3855 | i = 0; | |
3856 | while (p[0] != 0) | |
3857 | { | |
3858 | if (p[1] == 0) | |
74ca34ce | 3859 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
3860 | |
3861 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3862 | p += 2; | |
3863 | } | |
56be3814 | 3864 | regcache_raw_supply (regcache, reg->regnum, regp); |
3f9a994c | 3865 | return 1; |
b96ec7ac AC |
3866 | } |
3867 | ||
74ca34ce DJ |
3868 | /* Fetch the registers included in the target's 'g' packet. */ |
3869 | ||
29709017 DJ |
3870 | static int |
3871 | send_g_packet (void) | |
c906108c | 3872 | { |
d01949b6 | 3873 | struct remote_state *rs = get_remote_state (); |
74ca34ce | 3874 | int i, buf_len; |
c906108c | 3875 | char *p; |
74ca34ce | 3876 | char *regs; |
c906108c | 3877 | |
74ca34ce DJ |
3878 | sprintf (rs->buf, "g"); |
3879 | remote_send (&rs->buf, &rs->buf_size); | |
c906108c | 3880 | |
29709017 DJ |
3881 | /* We can get out of synch in various cases. If the first character |
3882 | in the buffer is not a hex character, assume that has happened | |
3883 | and try to fetch another packet to read. */ | |
3884 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
3885 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
3886 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
3887 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
3888 | { | |
3889 | if (remote_debug) | |
3890 | fprintf_unfiltered (gdb_stdlog, | |
3891 | "Bad register packet; fetching a new packet\n"); | |
3892 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3893 | } | |
3894 | ||
74ca34ce DJ |
3895 | buf_len = strlen (rs->buf); |
3896 | ||
3897 | /* Sanity check the received packet. */ | |
3898 | if (buf_len % 2 != 0) | |
3899 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf); | |
29709017 DJ |
3900 | |
3901 | return buf_len / 2; | |
3902 | } | |
3903 | ||
3904 | static void | |
56be3814 | 3905 | process_g_packet (struct regcache *regcache) |
29709017 | 3906 | { |
4a22f64d | 3907 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
29709017 DJ |
3908 | struct remote_state *rs = get_remote_state (); |
3909 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
3910 | int i, buf_len; | |
3911 | char *p; | |
3912 | char *regs; | |
3913 | ||
3914 | buf_len = strlen (rs->buf); | |
3915 | ||
3916 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce DJ |
3917 | if (buf_len > 2 * rsa->sizeof_g_packet) |
3918 | error (_("Remote 'g' packet reply is too long: %s"), rs->buf); | |
3919 | ||
3920 | /* Save the size of the packet sent to us by the target. It is used | |
3921 | as a heuristic when determining the max size of packets that the | |
3922 | target can safely receive. */ | |
3923 | if (rsa->actual_register_packet_size == 0) | |
3924 | rsa->actual_register_packet_size = buf_len; | |
3925 | ||
3926 | /* If this is smaller than we guessed the 'g' packet would be, | |
3927 | update our records. A 'g' reply that doesn't include a register's | |
3928 | value implies either that the register is not available, or that | |
3929 | the 'p' packet must be used. */ | |
3930 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 3931 | { |
74ca34ce DJ |
3932 | rsa->sizeof_g_packet = buf_len / 2; |
3933 | ||
4a22f64d | 3934 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 3935 | { |
74ca34ce DJ |
3936 | if (rsa->regs[i].pnum == -1) |
3937 | continue; | |
3938 | ||
3939 | if (rsa->regs[i].offset >= rsa->sizeof_g_packet) | |
3940 | rsa->regs[i].in_g_packet = 0; | |
b96ec7ac | 3941 | else |
74ca34ce | 3942 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 3943 | } |
74ca34ce | 3944 | } |
b323314b | 3945 | |
74ca34ce | 3946 | regs = alloca (rsa->sizeof_g_packet); |
c906108c SS |
3947 | |
3948 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 3949 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 3950 | |
c906108c SS |
3951 | /* Reply describes registers byte by byte, each byte encoded as two |
3952 | hex characters. Suck them all up, then supply them to the | |
3953 | register cacheing/storage mechanism. */ | |
3954 | ||
74ca34ce | 3955 | p = rs->buf; |
ea9c271d | 3956 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 3957 | { |
74ca34ce DJ |
3958 | if (p[0] == 0 || p[1] == 0) |
3959 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
3960 | internal_error (__FILE__, __LINE__, | |
3961 | "unexpected end of 'g' packet reply"); | |
3962 | ||
c906108c | 3963 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 3964 | regs[i] = 0; /* 'x' */ |
c906108c SS |
3965 | else |
3966 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3967 | p += 2; | |
3968 | } | |
3969 | ||
ad10f812 | 3970 | { |
b323314b | 3971 | int i; |
4a22f64d | 3972 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
ad10f812 | 3973 | { |
ea9c271d | 3974 | struct packet_reg *r = &rsa->regs[i]; |
b323314b AC |
3975 | if (r->in_g_packet) |
3976 | { | |
74ca34ce DJ |
3977 | if (r->offset * 2 >= strlen (rs->buf)) |
3978 | /* This shouldn't happen - we adjusted in_g_packet above. */ | |
3979 | internal_error (__FILE__, __LINE__, | |
3980 | "unexpected end of 'g' packet reply"); | |
3981 | else if (rs->buf[r->offset * 2] == 'x') | |
8ccc1287 | 3982 | { |
74ca34ce | 3983 | gdb_assert (r->offset * 2 < strlen (rs->buf)); |
8ccc1287 AC |
3984 | /* The register isn't available, mark it as such (at |
3985 | the same time setting the value to zero). */ | |
56be3814 | 3986 | regcache_raw_supply (regcache, r->regnum, NULL); |
8ccc1287 AC |
3987 | } |
3988 | else | |
56be3814 | 3989 | regcache_raw_supply (regcache, r->regnum, |
8ccc1287 | 3990 | regs + r->offset); |
b323314b | 3991 | } |
ad10f812 AC |
3992 | } |
3993 | } | |
c906108c SS |
3994 | } |
3995 | ||
29709017 | 3996 | static void |
56be3814 | 3997 | fetch_registers_using_g (struct regcache *regcache) |
29709017 DJ |
3998 | { |
3999 | send_g_packet (); | |
56be3814 | 4000 | process_g_packet (regcache); |
29709017 DJ |
4001 | } |
4002 | ||
74ca34ce | 4003 | static void |
56be3814 | 4004 | remote_fetch_registers (struct regcache *regcache, int regnum) |
74ca34ce DJ |
4005 | { |
4006 | struct remote_state *rs = get_remote_state (); | |
4007 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
4008 | int i; | |
4009 | ||
4010 | set_thread (PIDGET (inferior_ptid), 1); | |
4011 | ||
4012 | if (regnum >= 0) | |
4013 | { | |
4014 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
4015 | gdb_assert (reg != NULL); | |
4016 | ||
4017 | /* If this register might be in the 'g' packet, try that first - | |
4018 | we are likely to read more than one register. If this is the | |
4019 | first 'g' packet, we might be overly optimistic about its | |
4020 | contents, so fall back to 'p'. */ | |
4021 | if (reg->in_g_packet) | |
4022 | { | |
56be3814 | 4023 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
4024 | if (reg->in_g_packet) |
4025 | return; | |
4026 | } | |
4027 | ||
56be3814 | 4028 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
4029 | return; |
4030 | ||
4031 | /* This register is not available. */ | |
56be3814 | 4032 | regcache_raw_supply (regcache, reg->regnum, NULL); |
74ca34ce DJ |
4033 | |
4034 | return; | |
4035 | } | |
4036 | ||
56be3814 | 4037 | fetch_registers_using_g (regcache); |
74ca34ce | 4038 | |
4a22f64d | 4039 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 4040 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 4041 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
4042 | { |
4043 | /* This register is not available. */ | |
56be3814 | 4044 | regcache_raw_supply (regcache, i, NULL); |
74ca34ce DJ |
4045 | } |
4046 | } | |
4047 | ||
c906108c SS |
4048 | /* Prepare to store registers. Since we may send them all (using a |
4049 | 'G' request), we have to read out the ones we don't want to change | |
4050 | first. */ | |
4051 | ||
c5aa993b | 4052 | static void |
316f2060 | 4053 | remote_prepare_to_store (struct regcache *regcache) |
c906108c | 4054 | { |
ea9c271d | 4055 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cf0e1e0d | 4056 | int i; |
cfd77fa1 | 4057 | gdb_byte buf[MAX_REGISTER_SIZE]; |
cf0e1e0d | 4058 | |
c906108c | 4059 | /* Make sure the entire registers array is valid. */ |
444abaca | 4060 | switch (remote_protocol_packets[PACKET_P].support) |
5a2468f5 JM |
4061 | { |
4062 | case PACKET_DISABLE: | |
4063 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 4064 | /* Make sure all the necessary registers are cached. */ |
4a22f64d | 4065 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
ea9c271d | 4066 | if (rsa->regs[i].in_g_packet) |
316f2060 | 4067 | regcache_raw_read (regcache, rsa->regs[i].regnum, buf); |
5a2468f5 JM |
4068 | break; |
4069 | case PACKET_ENABLE: | |
4070 | break; | |
4071 | } | |
4072 | } | |
4073 | ||
ad10f812 | 4074 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 4075 | packet was not recognized. */ |
5a2468f5 JM |
4076 | |
4077 | static int | |
56be3814 | 4078 | store_register_using_P (const struct regcache *regcache, struct packet_reg *reg) |
5a2468f5 | 4079 | { |
4a22f64d | 4080 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
d01949b6 | 4081 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 4082 | struct remote_arch_state *rsa = get_remote_arch_state (); |
5a2468f5 | 4083 | /* Try storing a single register. */ |
6d820c5c | 4084 | char *buf = rs->buf; |
cfd77fa1 | 4085 | gdb_byte regp[MAX_REGISTER_SIZE]; |
5a2468f5 | 4086 | char *p; |
5a2468f5 | 4087 | |
74ca34ce DJ |
4088 | if (remote_protocol_packets[PACKET_P].support == PACKET_DISABLE) |
4089 | return 0; | |
4090 | ||
4091 | if (reg->pnum == -1) | |
4092 | return 0; | |
4093 | ||
ea9c271d | 4094 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 4095 | p = buf + strlen (buf); |
56be3814 | 4096 | regcache_raw_collect (regcache, reg->regnum, regp); |
4a22f64d | 4097 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
6d820c5c | 4098 | remote_send (&rs->buf, &rs->buf_size); |
5a2468f5 | 4099 | |
74ca34ce DJ |
4100 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
4101 | { | |
4102 | case PACKET_OK: | |
4103 | return 1; | |
4104 | case PACKET_ERROR: | |
4105 | error (_("Could not write register \"%s\""), | |
4a22f64d | 4106 | gdbarch_register_name (gdbarch, reg->regnum)); |
74ca34ce DJ |
4107 | case PACKET_UNKNOWN: |
4108 | return 0; | |
4109 | default: | |
4110 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
4111 | } | |
c906108c SS |
4112 | } |
4113 | ||
23860348 MS |
4114 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
4115 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
4116 | |
4117 | static void | |
56be3814 | 4118 | store_registers_using_G (const struct regcache *regcache) |
c906108c | 4119 | { |
d01949b6 | 4120 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 4121 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cfd77fa1 | 4122 | gdb_byte *regs; |
c906108c SS |
4123 | char *p; |
4124 | ||
193cb69f AC |
4125 | /* Extract all the registers in the regcache copying them into a |
4126 | local buffer. */ | |
4127 | { | |
b323314b | 4128 | int i; |
ea9c271d DJ |
4129 | regs = alloca (rsa->sizeof_g_packet); |
4130 | memset (regs, 0, rsa->sizeof_g_packet); | |
4a22f64d | 4131 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
193cb69f | 4132 | { |
ea9c271d | 4133 | struct packet_reg *r = &rsa->regs[i]; |
b323314b | 4134 | if (r->in_g_packet) |
56be3814 | 4135 | regcache_raw_collect (regcache, r->regnum, regs + r->offset); |
193cb69f AC |
4136 | } |
4137 | } | |
c906108c SS |
4138 | |
4139 | /* Command describes registers byte by byte, | |
4140 | each byte encoded as two hex characters. */ | |
6d820c5c | 4141 | p = rs->buf; |
193cb69f | 4142 | *p++ = 'G'; |
74ca34ce DJ |
4143 | /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets |
4144 | updated. */ | |
4145 | bin2hex (regs, p, rsa->sizeof_g_packet); | |
6d820c5c | 4146 | remote_send (&rs->buf, &rs->buf_size); |
c906108c | 4147 | } |
74ca34ce DJ |
4148 | |
4149 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
4150 | of the register cache buffer. FIXME: ignores errors. */ | |
4151 | ||
4152 | static void | |
56be3814 | 4153 | remote_store_registers (struct regcache *regcache, int regnum) |
74ca34ce DJ |
4154 | { |
4155 | struct remote_state *rs = get_remote_state (); | |
4156 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
4157 | int i; | |
4158 | ||
4159 | set_thread (PIDGET (inferior_ptid), 1); | |
4160 | ||
4161 | if (regnum >= 0) | |
4162 | { | |
4163 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
4164 | gdb_assert (reg != NULL); | |
4165 | ||
4166 | /* Always prefer to store registers using the 'P' packet if | |
4167 | possible; we often change only a small number of registers. | |
4168 | Sometimes we change a larger number; we'd need help from a | |
4169 | higher layer to know to use 'G'. */ | |
56be3814 | 4170 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
4171 | return; |
4172 | ||
4173 | /* For now, don't complain if we have no way to write the | |
4174 | register. GDB loses track of unavailable registers too | |
4175 | easily. Some day, this may be an error. We don't have | |
4176 | any way to read the register, either... */ | |
4177 | if (!reg->in_g_packet) | |
4178 | return; | |
4179 | ||
56be3814 | 4180 | store_registers_using_G (regcache); |
74ca34ce DJ |
4181 | return; |
4182 | } | |
4183 | ||
56be3814 | 4184 | store_registers_using_G (regcache); |
74ca34ce | 4185 | |
4a22f64d | 4186 | for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++) |
74ca34ce | 4187 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 4188 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
4189 | /* See above for why we do not issue an error here. */ |
4190 | continue; | |
4191 | } | |
c906108c SS |
4192 | \f |
4193 | ||
4194 | /* Return the number of hex digits in num. */ | |
4195 | ||
4196 | static int | |
fba45db2 | 4197 | hexnumlen (ULONGEST num) |
c906108c SS |
4198 | { |
4199 | int i; | |
4200 | ||
4201 | for (i = 0; num != 0; i++) | |
4202 | num >>= 4; | |
4203 | ||
4204 | return max (i, 1); | |
4205 | } | |
4206 | ||
2df3850c | 4207 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
4208 | |
4209 | static int | |
fba45db2 | 4210 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 4211 | { |
c906108c | 4212 | int len = hexnumlen (num); |
2df3850c JM |
4213 | return hexnumnstr (buf, num, len); |
4214 | } | |
4215 | ||
c906108c | 4216 | |
2df3850c | 4217 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 4218 | |
2df3850c | 4219 | static int |
fba45db2 | 4220 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
4221 | { |
4222 | int i; | |
4223 | ||
4224 | buf[width] = '\0'; | |
4225 | ||
4226 | for (i = width - 1; i >= 0; i--) | |
c906108c | 4227 | { |
c5aa993b | 4228 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
4229 | num >>= 4; |
4230 | } | |
4231 | ||
2df3850c | 4232 | return width; |
c906108c SS |
4233 | } |
4234 | ||
23860348 | 4235 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
4236 | |
4237 | static CORE_ADDR | |
fba45db2 | 4238 | remote_address_masked (CORE_ADDR addr) |
c906108c | 4239 | { |
911c95a5 UW |
4240 | int address_size = remote_address_size; |
4241 | /* If "remoteaddresssize" was not set, default to target address size. */ | |
4242 | if (!address_size) | |
4243 | address_size = gdbarch_addr_bit (current_gdbarch); | |
4244 | ||
4245 | if (address_size > 0 | |
4246 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
4247 | { |
4248 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 4249 | in a ULONGEST variable. */ |
c906108c | 4250 | ULONGEST mask = 1; |
911c95a5 | 4251 | mask = (mask << address_size) - 1; |
c906108c SS |
4252 | addr &= mask; |
4253 | } | |
4254 | return addr; | |
4255 | } | |
4256 | ||
a31ea83d DJ |
4257 | /* Convert BUFFER, binary data at least LEN bytes long, into escaped |
4258 | binary data in OUT_BUF. Set *OUT_LEN to the length of the data | |
4259 | encoded in OUT_BUF, and return the number of bytes in OUT_BUF | |
4260 | (which may be more than *OUT_LEN due to escape characters). The | |
4261 | total number of bytes in the output buffer will be at most | |
4262 | OUT_MAXLEN. */ | |
4263 | ||
4264 | static int | |
4265 | remote_escape_output (const gdb_byte *buffer, int len, | |
4266 | gdb_byte *out_buf, int *out_len, | |
4267 | int out_maxlen) | |
4268 | { | |
4269 | int input_index, output_index; | |
4270 | ||
4271 | output_index = 0; | |
4272 | for (input_index = 0; input_index < len; input_index++) | |
4273 | { | |
4274 | gdb_byte b = buffer[input_index]; | |
4275 | ||
4276 | if (b == '$' || b == '#' || b == '}') | |
4277 | { | |
4278 | /* These must be escaped. */ | |
4279 | if (output_index + 2 > out_maxlen) | |
4280 | break; | |
4281 | out_buf[output_index++] = '}'; | |
4282 | out_buf[output_index++] = b ^ 0x20; | |
4283 | } | |
4284 | else | |
4285 | { | |
4286 | if (output_index + 1 > out_maxlen) | |
4287 | break; | |
4288 | out_buf[output_index++] = b; | |
4289 | } | |
4290 | } | |
4291 | ||
4292 | *out_len = input_index; | |
4293 | return output_index; | |
4294 | } | |
4295 | ||
0876f84a DJ |
4296 | /* Convert BUFFER, escaped data LEN bytes long, into binary data |
4297 | in OUT_BUF. Return the number of bytes written to OUT_BUF. | |
4298 | Raise an error if the total number of bytes exceeds OUT_MAXLEN. | |
4299 | ||
4300 | This function reverses remote_escape_output. It allows more | |
4301 | escaped characters than that function does, in particular because | |
4302 | '*' must be escaped to avoid the run-length encoding processing | |
4303 | in reading packets. */ | |
4304 | ||
4305 | static int | |
4306 | remote_unescape_input (const gdb_byte *buffer, int len, | |
4307 | gdb_byte *out_buf, int out_maxlen) | |
4308 | { | |
4309 | int input_index, output_index; | |
4310 | int escaped; | |
4311 | ||
4312 | output_index = 0; | |
4313 | escaped = 0; | |
4314 | for (input_index = 0; input_index < len; input_index++) | |
4315 | { | |
4316 | gdb_byte b = buffer[input_index]; | |
4317 | ||
4318 | if (output_index + 1 > out_maxlen) | |
4319 | { | |
4320 | warning (_("Received too much data from remote target;" | |
4321 | " ignoring overflow.")); | |
4322 | return output_index; | |
4323 | } | |
4324 | ||
4325 | if (escaped) | |
4326 | { | |
4327 | out_buf[output_index++] = b ^ 0x20; | |
4328 | escaped = 0; | |
4329 | } | |
4330 | else if (b == '}') | |
4331 | escaped = 1; | |
4332 | else | |
4333 | out_buf[output_index++] = b; | |
4334 | } | |
4335 | ||
4336 | if (escaped) | |
4337 | error (_("Unmatched escape character in target response.")); | |
4338 | ||
4339 | return output_index; | |
4340 | } | |
4341 | ||
c906108c SS |
4342 | /* Determine whether the remote target supports binary downloading. |
4343 | This is accomplished by sending a no-op memory write of zero length | |
4344 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
4345 | the whole packet, since many stubs strip the eighth bit and |
4346 | subsequently compute a wrong checksum, which causes real havoc with | |
4347 | remote_write_bytes. | |
7a292a7a | 4348 | |
96baa820 JM |
4349 | NOTE: This can still lose if the serial line is not eight-bit |
4350 | clean. In cases like this, the user should clear "remote | |
23860348 | 4351 | X-packet". */ |
96baa820 | 4352 | |
c906108c | 4353 | static void |
fba45db2 | 4354 | check_binary_download (CORE_ADDR addr) |
c906108c | 4355 | { |
d01949b6 | 4356 | struct remote_state *rs = get_remote_state (); |
24b06219 | 4357 | |
444abaca | 4358 | switch (remote_protocol_packets[PACKET_X].support) |
c906108c | 4359 | { |
96baa820 JM |
4360 | case PACKET_DISABLE: |
4361 | break; | |
4362 | case PACKET_ENABLE: | |
4363 | break; | |
4364 | case PACKET_SUPPORT_UNKNOWN: | |
4365 | { | |
96baa820 | 4366 | char *p; |
802188a7 | 4367 | |
2e9f7625 | 4368 | p = rs->buf; |
96baa820 JM |
4369 | *p++ = 'X'; |
4370 | p += hexnumstr (p, (ULONGEST) addr); | |
4371 | *p++ = ','; | |
4372 | p += hexnumstr (p, (ULONGEST) 0); | |
4373 | *p++ = ':'; | |
4374 | *p = '\0'; | |
802188a7 | 4375 | |
2e9f7625 | 4376 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 4377 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 4378 | |
2e9f7625 | 4379 | if (rs->buf[0] == '\0') |
96baa820 JM |
4380 | { |
4381 | if (remote_debug) | |
4382 | fprintf_unfiltered (gdb_stdlog, | |
4383 | "binary downloading NOT suppported by target\n"); | |
444abaca | 4384 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
4385 | } |
4386 | else | |
4387 | { | |
4388 | if (remote_debug) | |
4389 | fprintf_unfiltered (gdb_stdlog, | |
4390 | "binary downloading suppported by target\n"); | |
444abaca | 4391 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
4392 | } |
4393 | break; | |
4394 | } | |
c906108c SS |
4395 | } |
4396 | } | |
4397 | ||
4398 | /* Write memory data directly to the remote machine. | |
4399 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 4400 | HEADER is the starting part of the packet. |
c906108c SS |
4401 | MEMADDR is the address in the remote memory space. |
4402 | MYADDR is the address of the buffer in our space. | |
4403 | LEN is the number of bytes. | |
a76d924d DJ |
4404 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
4405 | should send data as binary ('X'), or hex-encoded ('M'). | |
4406 | ||
4407 | The function creates packet of the form | |
4408 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
4409 | ||
4410 | where encoding of <DATA> is termined by PACKET_FORMAT. | |
4411 | ||
4412 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
4413 | are omitted. | |
4414 | ||
4415 | Returns the number of bytes transferred, or 0 (setting errno) for | |
23860348 | 4416 | error. Only transfer a single packet. */ |
c906108c | 4417 | |
a76d924d DJ |
4418 | static int |
4419 | remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, | |
4420 | const gdb_byte *myaddr, int len, | |
4421 | char packet_format, int use_length) | |
c906108c | 4422 | { |
6d820c5c | 4423 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 4424 | char *p; |
a76d924d DJ |
4425 | char *plen = NULL; |
4426 | int plenlen = 0; | |
917317f4 JM |
4427 | int todo; |
4428 | int nr_bytes; | |
a257b5bb | 4429 | int payload_size; |
6765f3e5 | 4430 | int payload_length; |
a76d924d DJ |
4431 | int header_length; |
4432 | ||
4433 | if (packet_format != 'X' && packet_format != 'M') | |
4434 | internal_error (__FILE__, __LINE__, | |
4435 | "remote_write_bytes_aux: bad packet format"); | |
c906108c | 4436 | |
b2182ed2 DJ |
4437 | if (len <= 0) |
4438 | return 0; | |
4439 | ||
3de11b2e | 4440 | payload_size = get_memory_write_packet_size (); |
2bc416ba | 4441 | |
6d820c5c DJ |
4442 | /* The packet buffer will be large enough for the payload; |
4443 | get_memory_packet_size ensures this. */ | |
a76d924d | 4444 | rs->buf[0] = '\0'; |
c906108c | 4445 | |
a257b5bb | 4446 | /* Compute the size of the actual payload by subtracting out the |
3de11b2e NS |
4447 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". |
4448 | */ | |
a76d924d DJ |
4449 | payload_size -= strlen ("$,:#NN"); |
4450 | if (!use_length) | |
4451 | /* The comma won't be used. */ | |
4452 | payload_size += 1; | |
4453 | header_length = strlen (header); | |
4454 | payload_size -= header_length; | |
3de11b2e | 4455 | payload_size -= hexnumlen (memaddr); |
c906108c | 4456 | |
a76d924d | 4457 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 4458 | |
a76d924d DJ |
4459 | strcat (rs->buf, header); |
4460 | p = rs->buf + strlen (header); | |
4461 | ||
4462 | /* Compute a best guess of the number of bytes actually transfered. */ | |
4463 | if (packet_format == 'X') | |
c906108c | 4464 | { |
23860348 | 4465 | /* Best guess at number of bytes that will fit. */ |
a257b5bb | 4466 | todo = min (len, payload_size); |
a76d924d DJ |
4467 | if (use_length) |
4468 | payload_size -= hexnumlen (todo); | |
3de11b2e | 4469 | todo = min (todo, payload_size); |
a76d924d DJ |
4470 | } |
4471 | else | |
4472 | { | |
23860348 | 4473 | /* Num bytes that will fit. */ |
a257b5bb | 4474 | todo = min (len, payload_size / 2); |
a76d924d DJ |
4475 | if (use_length) |
4476 | payload_size -= hexnumlen (todo); | |
3de11b2e | 4477 | todo = min (todo, payload_size / 2); |
917317f4 | 4478 | } |
a76d924d | 4479 | |
3de11b2e NS |
4480 | if (todo <= 0) |
4481 | internal_error (__FILE__, __LINE__, | |
4482 | _("minumum packet size too small to write data")); | |
802188a7 | 4483 | |
6765f3e5 DJ |
4484 | /* If we already need another packet, then try to align the end |
4485 | of this packet to a useful boundary. */ | |
4486 | if (todo > 2 * REMOTE_ALIGN_WRITES && todo < len) | |
4487 | todo = ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
4488 | ||
a257b5bb | 4489 | /* Append "<memaddr>". */ |
917317f4 JM |
4490 | memaddr = remote_address_masked (memaddr); |
4491 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 4492 | |
a76d924d DJ |
4493 | if (use_length) |
4494 | { | |
4495 | /* Append ",". */ | |
4496 | *p++ = ','; | |
802188a7 | 4497 | |
a76d924d DJ |
4498 | /* Append <len>. Retain the location/size of <len>. It may need to |
4499 | be adjusted once the packet body has been created. */ | |
4500 | plen = p; | |
4501 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
4502 | p += plenlen; | |
4503 | } | |
a257b5bb AC |
4504 | |
4505 | /* Append ":". */ | |
917317f4 JM |
4506 | *p++ = ':'; |
4507 | *p = '\0'; | |
802188a7 | 4508 | |
a257b5bb | 4509 | /* Append the packet body. */ |
a76d924d | 4510 | if (packet_format == 'X') |
917317f4 | 4511 | { |
917317f4 JM |
4512 | /* Binary mode. Send target system values byte by byte, in |
4513 | increasing byte addresses. Only escape certain critical | |
4514 | characters. */ | |
6765f3e5 DJ |
4515 | payload_length = remote_escape_output (myaddr, todo, p, &nr_bytes, |
4516 | payload_size); | |
4517 | ||
4518 | /* If not all TODO bytes fit, then we'll need another packet. Make | |
9b7194bc DJ |
4519 | a second try to keep the end of the packet aligned. Don't do |
4520 | this if the packet is tiny. */ | |
4521 | if (nr_bytes < todo && nr_bytes > 2 * REMOTE_ALIGN_WRITES) | |
6765f3e5 DJ |
4522 | { |
4523 | int new_nr_bytes; | |
4524 | ||
4525 | new_nr_bytes = (((memaddr + nr_bytes) & ~(REMOTE_ALIGN_WRITES - 1)) | |
4526 | - memaddr); | |
4527 | if (new_nr_bytes != nr_bytes) | |
4528 | payload_length = remote_escape_output (myaddr, new_nr_bytes, | |
4529 | p, &nr_bytes, | |
4530 | payload_size); | |
4531 | } | |
4532 | ||
4533 | p += payload_length; | |
a76d924d | 4534 | if (use_length && nr_bytes < todo) |
c906108c | 4535 | { |
802188a7 | 4536 | /* Escape chars have filled up the buffer prematurely, |
917317f4 JM |
4537 | and we have actually sent fewer bytes than planned. |
4538 | Fix-up the length field of the packet. Use the same | |
4539 | number of characters as before. */ | |
917317f4 JM |
4540 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); |
4541 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 4542 | } |
a76d924d DJ |
4543 | } |
4544 | else | |
4545 | { | |
917317f4 JM |
4546 | /* Normal mode: Send target system values byte by byte, in |
4547 | increasing byte addresses. Each byte is encoded as a two hex | |
4548 | value. */ | |
2644f393 | 4549 | nr_bytes = bin2hex (myaddr, p, todo); |
aa6c0017 | 4550 | p += 2 * nr_bytes; |
c906108c | 4551 | } |
802188a7 | 4552 | |
2e9f7625 | 4553 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 4554 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 4555 | |
2e9f7625 | 4556 | if (rs->buf[0] == 'E') |
917317f4 JM |
4557 | { |
4558 | /* There is no correspondance between what the remote protocol | |
4559 | uses for errors and errno codes. We would like a cleaner way | |
4560 | of representing errors (big enough to include errno codes, | |
4561 | bfd_error codes, and others). But for now just return EIO. */ | |
4562 | errno = EIO; | |
4563 | return 0; | |
4564 | } | |
802188a7 | 4565 | |
23860348 MS |
4566 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send |
4567 | fewer bytes than we'd planned. */ | |
917317f4 | 4568 | return nr_bytes; |
c906108c SS |
4569 | } |
4570 | ||
a76d924d DJ |
4571 | /* Write memory data directly to the remote machine. |
4572 | This does not inform the data cache; the data cache uses this. | |
4573 | MEMADDR is the address in the remote memory space. | |
4574 | MYADDR is the address of the buffer in our space. | |
4575 | LEN is the number of bytes. | |
4576 | ||
4577 | Returns number of bytes transferred, or 0 (setting errno) for | |
4578 | error. Only transfer a single packet. */ | |
4579 | ||
4580 | int | |
4581 | remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, int len) | |
4582 | { | |
4583 | char *packet_format = 0; | |
4584 | ||
4585 | /* Check whether the target supports binary download. */ | |
4586 | check_binary_download (memaddr); | |
4587 | ||
4588 | switch (remote_protocol_packets[PACKET_X].support) | |
4589 | { | |
4590 | case PACKET_ENABLE: | |
4591 | packet_format = "X"; | |
4592 | break; | |
4593 | case PACKET_DISABLE: | |
4594 | packet_format = "M"; | |
4595 | break; | |
4596 | case PACKET_SUPPORT_UNKNOWN: | |
4597 | internal_error (__FILE__, __LINE__, | |
4598 | _("remote_write_bytes: bad internal state")); | |
4599 | default: | |
4600 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
4601 | } | |
4602 | ||
4603 | return remote_write_bytes_aux (packet_format, | |
4604 | memaddr, myaddr, len, packet_format[0], 1); | |
4605 | } | |
4606 | ||
c906108c SS |
4607 | /* Read memory data directly from the remote machine. |
4608 | This does not use the data cache; the data cache uses this. | |
4609 | MEMADDR is the address in the remote memory space. | |
4610 | MYADDR is the address of the buffer in our space. | |
4611 | LEN is the number of bytes. | |
4612 | ||
4613 | Returns number of bytes transferred, or 0 for error. */ | |
4614 | ||
917317f4 JM |
4615 | /* NOTE: cagney/1999-10-18: This function (and its siblings in other |
4616 | remote targets) shouldn't attempt to read the entire buffer. | |
4617 | Instead it should read a single packet worth of data and then | |
4618 | return the byte size of that packet to the caller. The caller (its | |
4619 | caller and its callers caller ;-) already contains code for | |
23860348 | 4620 | handling partial reads. */ |
917317f4 | 4621 | |
449092f6 | 4622 | int |
cfd77fa1 | 4623 | remote_read_bytes (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
c906108c | 4624 | { |
6d820c5c | 4625 | struct remote_state *rs = get_remote_state (); |
23860348 | 4626 | int max_buf_size; /* Max size of packet output buffer. */ |
c906108c SS |
4627 | int origlen; |
4628 | ||
b2182ed2 DJ |
4629 | if (len <= 0) |
4630 | return 0; | |
4631 | ||
11cf8741 | 4632 | max_buf_size = get_memory_read_packet_size (); |
6d820c5c DJ |
4633 | /* The packet buffer will be large enough for the payload; |
4634 | get_memory_packet_size ensures this. */ | |
c906108c SS |
4635 | |
4636 | origlen = len; | |
4637 | while (len > 0) | |
4638 | { | |
c906108c SS |
4639 | char *p; |
4640 | int todo; | |
4641 | int i; | |
4642 | ||
c5aa993b | 4643 | todo = min (len, max_buf_size / 2); /* num bytes that will fit */ |
c906108c SS |
4644 | |
4645 | /* construct "m"<memaddr>","<len>" */ | |
2e9f7625 | 4646 | /* sprintf (rs->buf, "m%lx,%x", (unsigned long) memaddr, todo); */ |
c906108c | 4647 | memaddr = remote_address_masked (memaddr); |
2e9f7625 | 4648 | p = rs->buf; |
c906108c SS |
4649 | *p++ = 'm'; |
4650 | p += hexnumstr (p, (ULONGEST) memaddr); | |
4651 | *p++ = ','; | |
4652 | p += hexnumstr (p, (ULONGEST) todo); | |
4653 | *p = '\0'; | |
4654 | ||
2e9f7625 | 4655 | putpkt (rs->buf); |
6d820c5c | 4656 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 4657 | |
2e9f7625 DJ |
4658 | if (rs->buf[0] == 'E' |
4659 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
4660 | && rs->buf[3] == '\0') | |
c906108c | 4661 | { |
23860348 MS |
4662 | /* There is no correspondance between what the remote |
4663 | protocol uses for errors and errno codes. We would like | |
4664 | a cleaner way of representing errors (big enough to | |
4665 | include errno codes, bfd_error codes, and others). But | |
4666 | for now just return EIO. */ | |
c906108c SS |
4667 | errno = EIO; |
4668 | return 0; | |
4669 | } | |
4670 | ||
c5aa993b JM |
4671 | /* Reply describes memory byte by byte, |
4672 | each byte encoded as two hex characters. */ | |
c906108c | 4673 | |
2e9f7625 | 4674 | p = rs->buf; |
30559e10 | 4675 | if ((i = hex2bin (p, myaddr, todo)) < todo) |
c906108c | 4676 | { |
30559e10 | 4677 | /* Reply is short. This means that we were able to read |
23860348 | 4678 | only part of what we wanted to. */ |
30559e10 | 4679 | return i + (origlen - len); |
c906108c SS |
4680 | } |
4681 | myaddr += todo; | |
4682 | memaddr += todo; | |
4683 | len -= todo; | |
4684 | } | |
4685 | return origlen; | |
4686 | } | |
4687 | \f | |
4688 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
23860348 MS |
4689 | transferring to or from debugger address BUFFER. Write to inferior |
4690 | if SHOULD_WRITE is nonzero. Returns length of data written or | |
4691 | read; 0 for error. TARGET is unused. */ | |
392a587b | 4692 | |
c906108c | 4693 | static int |
961cb7b5 | 4694 | remote_xfer_memory (CORE_ADDR mem_addr, gdb_byte *buffer, int mem_len, |
0a65a603 | 4695 | int should_write, struct mem_attrib *attrib, |
29e57380 | 4696 | struct target_ops *target) |
c906108c | 4697 | { |
4930751a C |
4698 | int res; |
4699 | ||
4930751a | 4700 | if (should_write) |
b2182ed2 | 4701 | res = remote_write_bytes (mem_addr, buffer, mem_len); |
4930751a | 4702 | else |
b2182ed2 | 4703 | res = remote_read_bytes (mem_addr, buffer, mem_len); |
4930751a C |
4704 | |
4705 | return res; | |
c906108c SS |
4706 | } |
4707 | ||
a76d924d DJ |
4708 | /* Sends a packet with content determined by the printf format string |
4709 | FORMAT and the remaining arguments, then gets the reply. Returns | |
4710 | whether the packet was a success, a failure, or unknown. */ | |
4711 | ||
4712 | enum packet_result | |
4713 | remote_send_printf (const char *format, ...) | |
4714 | { | |
4715 | struct remote_state *rs = get_remote_state (); | |
4716 | int max_size = get_remote_packet_size (); | |
4717 | ||
4718 | va_list ap; | |
4719 | va_start (ap, format); | |
4720 | ||
4721 | rs->buf[0] = '\0'; | |
4722 | if (vsnprintf (rs->buf, max_size, format, ap) >= max_size) | |
4723 | internal_error (__FILE__, __LINE__, "Too long remote packet."); | |
4724 | ||
4725 | if (putpkt (rs->buf) < 0) | |
4726 | error (_("Communication problem with target.")); | |
4727 | ||
4728 | rs->buf[0] = '\0'; | |
4729 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4730 | ||
4731 | return packet_check_result (rs->buf); | |
4732 | } | |
4733 | ||
4734 | static void | |
4735 | restore_remote_timeout (void *p) | |
4736 | { | |
4737 | int value = *(int *)p; | |
4738 | remote_timeout = value; | |
4739 | } | |
4740 | ||
4741 | /* Flash writing can take quite some time. We'll set | |
4742 | effectively infinite timeout for flash operations. | |
4743 | In future, we'll need to decide on a better approach. */ | |
4744 | static const int remote_flash_timeout = 1000; | |
4745 | ||
4746 | static void | |
4747 | remote_flash_erase (struct target_ops *ops, | |
4748 | ULONGEST address, LONGEST length) | |
4749 | { | |
4750 | int saved_remote_timeout = remote_timeout; | |
4751 | enum packet_result ret; | |
4752 | ||
4753 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
4754 | &saved_remote_timeout); | |
4755 | remote_timeout = remote_flash_timeout; | |
4756 | ||
4757 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
4758 | paddr (address), | |
4759 | phex (length, 4)); | |
4760 | switch (ret) | |
4761 | { | |
4762 | case PACKET_UNKNOWN: | |
4763 | error (_("Remote target does not support flash erase")); | |
4764 | case PACKET_ERROR: | |
4765 | error (_("Error erasing flash with vFlashErase packet")); | |
4766 | default: | |
4767 | break; | |
4768 | } | |
4769 | ||
4770 | do_cleanups (back_to); | |
4771 | } | |
4772 | ||
4773 | static LONGEST | |
4774 | remote_flash_write (struct target_ops *ops, | |
4775 | ULONGEST address, LONGEST length, | |
4776 | const gdb_byte *data) | |
4777 | { | |
4778 | int saved_remote_timeout = remote_timeout; | |
4779 | int ret; | |
4780 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
4781 | &saved_remote_timeout); | |
4782 | ||
4783 | remote_timeout = remote_flash_timeout; | |
4784 | ret = remote_write_bytes_aux ("vFlashWrite:", address, data, length, 'X', 0); | |
4785 | do_cleanups (back_to); | |
4786 | ||
4787 | return ret; | |
4788 | } | |
4789 | ||
4790 | static void | |
4791 | remote_flash_done (struct target_ops *ops) | |
4792 | { | |
4793 | int saved_remote_timeout = remote_timeout; | |
4794 | int ret; | |
4795 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
4796 | &saved_remote_timeout); | |
4797 | ||
4798 | remote_timeout = remote_flash_timeout; | |
4799 | ret = remote_send_printf ("vFlashDone"); | |
4800 | do_cleanups (back_to); | |
4801 | ||
4802 | switch (ret) | |
4803 | { | |
4804 | case PACKET_UNKNOWN: | |
4805 | error (_("Remote target does not support vFlashDone")); | |
4806 | case PACKET_ERROR: | |
4807 | error (_("Error finishing flash operation")); | |
4808 | default: | |
4809 | break; | |
4810 | } | |
4811 | } | |
4812 | ||
c906108c | 4813 | static void |
fba45db2 | 4814 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
4815 | { |
4816 | puts_filtered ("Debugging a target over a serial line.\n"); | |
4817 | } | |
4818 | \f | |
4819 | /* Stuff for dealing with the packets which are part of this protocol. | |
4820 | See comment at top of file for details. */ | |
4821 | ||
0876f84a | 4822 | /* Read a single character from the remote end. */ |
c906108c SS |
4823 | |
4824 | static int | |
fba45db2 | 4825 | readchar (int timeout) |
c906108c SS |
4826 | { |
4827 | int ch; | |
4828 | ||
2cd58942 | 4829 | ch = serial_readchar (remote_desc, timeout); |
c906108c | 4830 | |
2acceee2 | 4831 | if (ch >= 0) |
0876f84a | 4832 | return ch; |
2acceee2 JM |
4833 | |
4834 | switch ((enum serial_rc) ch) | |
c906108c SS |
4835 | { |
4836 | case SERIAL_EOF: | |
2acceee2 | 4837 | target_mourn_inferior (); |
8a3fe4f8 | 4838 | error (_("Remote connection closed")); |
2acceee2 | 4839 | /* no return */ |
c906108c | 4840 | case SERIAL_ERROR: |
e2e0b3e5 | 4841 | perror_with_name (_("Remote communication error")); |
2acceee2 | 4842 | /* no return */ |
c906108c | 4843 | case SERIAL_TIMEOUT: |
2acceee2 | 4844 | break; |
c906108c | 4845 | } |
2acceee2 | 4846 | return ch; |
c906108c SS |
4847 | } |
4848 | ||
6d820c5c DJ |
4849 | /* Send the command in *BUF to the remote machine, and read the reply |
4850 | into *BUF. Report an error if we get an error reply. Resize | |
4851 | *BUF using xrealloc if necessary to hold the result, and update | |
4852 | *SIZEOF_BUF. */ | |
c906108c SS |
4853 | |
4854 | static void | |
6d820c5c DJ |
4855 | remote_send (char **buf, |
4856 | long *sizeof_buf) | |
c906108c | 4857 | { |
6d820c5c | 4858 | putpkt (*buf); |
c2d11a7d | 4859 | getpkt (buf, sizeof_buf, 0); |
c906108c | 4860 | |
6d820c5c DJ |
4861 | if ((*buf)[0] == 'E') |
4862 | error (_("Remote failure reply: %s"), *buf); | |
c906108c SS |
4863 | } |
4864 | ||
4865 | /* Display a null-terminated packet on stdout, for debugging, using C | |
4866 | string notation. */ | |
4867 | ||
4868 | static void | |
fba45db2 | 4869 | print_packet (char *buf) |
c906108c SS |
4870 | { |
4871 | puts_filtered ("\""); | |
43e526b9 | 4872 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
4873 | puts_filtered ("\""); |
4874 | } | |
4875 | ||
4876 | int | |
fba45db2 | 4877 | putpkt (char *buf) |
c906108c SS |
4878 | { |
4879 | return putpkt_binary (buf, strlen (buf)); | |
4880 | } | |
4881 | ||
4882 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 4883 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 4884 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
4885 | and for a possible /0 if we are debugging (remote_debug) and want |
4886 | to print the sent packet as a string. */ | |
c906108c SS |
4887 | |
4888 | static int | |
fba45db2 | 4889 | putpkt_binary (char *buf, int cnt) |
c906108c | 4890 | { |
2d717e4f | 4891 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4892 | int i; |
4893 | unsigned char csum = 0; | |
11cf8741 | 4894 | char *buf2 = alloca (cnt + 6); |
085dd6e6 | 4895 | |
c906108c SS |
4896 | int ch; |
4897 | int tcount = 0; | |
4898 | char *p; | |
4899 | ||
2d717e4f DJ |
4900 | /* We're sending out a new packet. Make sure we don't look at a |
4901 | stale cached response. */ | |
4902 | rs->cached_wait_status = 0; | |
4903 | ||
c906108c SS |
4904 | /* Copy the packet into buffer BUF2, encapsulating it |
4905 | and giving it a checksum. */ | |
4906 | ||
c906108c SS |
4907 | p = buf2; |
4908 | *p++ = '$'; | |
4909 | ||
4910 | for (i = 0; i < cnt; i++) | |
4911 | { | |
4912 | csum += buf[i]; | |
4913 | *p++ = buf[i]; | |
4914 | } | |
4915 | *p++ = '#'; | |
4916 | *p++ = tohex ((csum >> 4) & 0xf); | |
4917 | *p++ = tohex (csum & 0xf); | |
4918 | ||
4919 | /* Send it over and over until we get a positive ack. */ | |
4920 | ||
4921 | while (1) | |
4922 | { | |
4923 | int started_error_output = 0; | |
4924 | ||
4925 | if (remote_debug) | |
4926 | { | |
4927 | *p = '\0'; | |
43e526b9 JM |
4928 | fprintf_unfiltered (gdb_stdlog, "Sending packet: "); |
4929 | fputstrn_unfiltered (buf2, p - buf2, 0, gdb_stdlog); | |
d4f3574e | 4930 | fprintf_unfiltered (gdb_stdlog, "..."); |
0f71a2f6 | 4931 | gdb_flush (gdb_stdlog); |
c906108c | 4932 | } |
2cd58942 | 4933 | if (serial_write (remote_desc, buf2, p - buf2)) |
e2e0b3e5 | 4934 | perror_with_name (_("putpkt: write failed")); |
c906108c | 4935 | |
23860348 | 4936 | /* Read until either a timeout occurs (-2) or '+' is read. */ |
c906108c SS |
4937 | while (1) |
4938 | { | |
4939 | ch = readchar (remote_timeout); | |
4940 | ||
c5aa993b | 4941 | if (remote_debug) |
c906108c SS |
4942 | { |
4943 | switch (ch) | |
4944 | { | |
4945 | case '+': | |
1216fa2c | 4946 | case '-': |
c906108c SS |
4947 | case SERIAL_TIMEOUT: |
4948 | case '$': | |
4949 | if (started_error_output) | |
4950 | { | |
4951 | putchar_unfiltered ('\n'); | |
4952 | started_error_output = 0; | |
4953 | } | |
4954 | } | |
4955 | } | |
4956 | ||
4957 | switch (ch) | |
4958 | { | |
4959 | case '+': | |
4960 | if (remote_debug) | |
0f71a2f6 | 4961 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 4962 | return 1; |
1216fa2c AC |
4963 | case '-': |
4964 | if (remote_debug) | |
4965 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
c906108c | 4966 | case SERIAL_TIMEOUT: |
c5aa993b | 4967 | tcount++; |
c906108c SS |
4968 | if (tcount > 3) |
4969 | return 0; | |
23860348 | 4970 | break; /* Retransmit buffer. */ |
c906108c SS |
4971 | case '$': |
4972 | { | |
40e3f985 | 4973 | if (remote_debug) |
2bc416ba | 4974 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 4975 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
4976 | /* It's probably an old response sent because an ACK |
4977 | was lost. Gobble up the packet and ack it so it | |
4978 | doesn't get retransmitted when we resend this | |
4979 | packet. */ | |
6d820c5c | 4980 | skip_frame (); |
d6f7abdf | 4981 | serial_write (remote_desc, "+", 1); |
23860348 | 4982 | continue; /* Now, go look for +. */ |
c906108c SS |
4983 | } |
4984 | default: | |
4985 | if (remote_debug) | |
4986 | { | |
4987 | if (!started_error_output) | |
4988 | { | |
4989 | started_error_output = 1; | |
0f71a2f6 | 4990 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 4991 | } |
0f71a2f6 | 4992 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
4993 | } |
4994 | continue; | |
4995 | } | |
23860348 | 4996 | break; /* Here to retransmit. */ |
c906108c SS |
4997 | } |
4998 | ||
4999 | #if 0 | |
5000 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
5001 | able to get out next time we call QUIT, without anything as |
5002 | violent as interrupt_query. If we want to provide a way out of | |
5003 | here without getting to the next QUIT, it should be based on | |
5004 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
5005 | if (quit_flag) |
5006 | { | |
5007 | quit_flag = 0; | |
5008 | interrupt_query (); | |
5009 | } | |
5010 | #endif | |
5011 | } | |
5012 | } | |
5013 | ||
6d820c5c DJ |
5014 | /* Come here after finding the start of a frame when we expected an |
5015 | ack. Do our best to discard the rest of this packet. */ | |
5016 | ||
5017 | static void | |
5018 | skip_frame (void) | |
5019 | { | |
5020 | int c; | |
5021 | ||
5022 | while (1) | |
5023 | { | |
5024 | c = readchar (remote_timeout); | |
5025 | switch (c) | |
5026 | { | |
5027 | case SERIAL_TIMEOUT: | |
5028 | /* Nothing we can do. */ | |
5029 | return; | |
5030 | case '#': | |
5031 | /* Discard the two bytes of checksum and stop. */ | |
5032 | c = readchar (remote_timeout); | |
5033 | if (c >= 0) | |
5034 | c = readchar (remote_timeout); | |
5035 | ||
5036 | return; | |
5037 | case '*': /* Run length encoding. */ | |
5038 | /* Discard the repeat count. */ | |
5039 | c = readchar (remote_timeout); | |
5040 | if (c < 0) | |
5041 | return; | |
5042 | break; | |
5043 | default: | |
5044 | /* A regular character. */ | |
5045 | break; | |
5046 | } | |
5047 | } | |
5048 | } | |
5049 | ||
c906108c | 5050 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
5051 | into *BUF, verifying the checksum, length, and handling run-length |
5052 | compression. NUL terminate the buffer. If there is not enough room, | |
5053 | expand *BUF using xrealloc. | |
c906108c | 5054 | |
c2d11a7d JM |
5055 | Returns -1 on error, number of characters in buffer (ignoring the |
5056 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 5057 | SERIAL status indications). */ |
c2d11a7d JM |
5058 | |
5059 | static long | |
6d820c5c DJ |
5060 | read_frame (char **buf_p, |
5061 | long *sizeof_buf) | |
c906108c SS |
5062 | { |
5063 | unsigned char csum; | |
c2d11a7d | 5064 | long bc; |
c906108c | 5065 | int c; |
6d820c5c | 5066 | char *buf = *buf_p; |
c906108c SS |
5067 | |
5068 | csum = 0; | |
c2d11a7d | 5069 | bc = 0; |
c906108c SS |
5070 | |
5071 | while (1) | |
5072 | { | |
5073 | c = readchar (remote_timeout); | |
c906108c SS |
5074 | switch (c) |
5075 | { | |
5076 | case SERIAL_TIMEOUT: | |
5077 | if (remote_debug) | |
0f71a2f6 | 5078 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 5079 | return -1; |
c906108c SS |
5080 | case '$': |
5081 | if (remote_debug) | |
0f71a2f6 JM |
5082 | fputs_filtered ("Saw new packet start in middle of old one\n", |
5083 | gdb_stdlog); | |
23860348 | 5084 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
5085 | case '#': |
5086 | { | |
5087 | unsigned char pktcsum; | |
e1b09194 AC |
5088 | int check_0 = 0; |
5089 | int check_1 = 0; | |
c906108c | 5090 | |
c2d11a7d | 5091 | buf[bc] = '\0'; |
c906108c | 5092 | |
e1b09194 AC |
5093 | check_0 = readchar (remote_timeout); |
5094 | if (check_0 >= 0) | |
5095 | check_1 = readchar (remote_timeout); | |
802188a7 | 5096 | |
e1b09194 AC |
5097 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
5098 | { | |
5099 | if (remote_debug) | |
2bc416ba | 5100 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 5101 | gdb_stdlog); |
e1b09194 AC |
5102 | return -1; |
5103 | } | |
5104 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
5105 | { |
5106 | if (remote_debug) | |
2bc416ba | 5107 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 5108 | gdb_stdlog); |
40e3f985 FN |
5109 | return -1; |
5110 | } | |
c906108c | 5111 | |
e1b09194 | 5112 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 5113 | if (csum == pktcsum) |
c2d11a7d | 5114 | return bc; |
c906108c | 5115 | |
c5aa993b | 5116 | if (remote_debug) |
c906108c | 5117 | { |
0f71a2f6 | 5118 | fprintf_filtered (gdb_stdlog, |
c5aa993b | 5119 | "Bad checksum, sentsum=0x%x, csum=0x%x, buf=", |
0f71a2f6 | 5120 | pktcsum, csum); |
0876f84a | 5121 | fputstrn_filtered (buf, bc, 0, gdb_stdlog); |
0f71a2f6 | 5122 | fputs_filtered ("\n", gdb_stdlog); |
c906108c | 5123 | } |
c2d11a7d | 5124 | /* Number of characters in buffer ignoring trailing |
23860348 | 5125 | NULL. */ |
c2d11a7d | 5126 | return -1; |
c906108c | 5127 | } |
23860348 | 5128 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
5129 | { |
5130 | int repeat; | |
5131 | csum += c; | |
c906108c | 5132 | |
b4501125 AC |
5133 | c = readchar (remote_timeout); |
5134 | csum += c; | |
23860348 | 5135 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 5136 | |
23860348 | 5137 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 5138 | |
6d820c5c | 5139 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 5140 | { |
6d820c5c DJ |
5141 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
5142 | { | |
5143 | /* Make some more room in the buffer. */ | |
5144 | *sizeof_buf += repeat; | |
5145 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
5146 | buf = *buf_p; | |
5147 | } | |
5148 | ||
c2d11a7d JM |
5149 | memset (&buf[bc], buf[bc - 1], repeat); |
5150 | bc += repeat; | |
c2c6d25f JM |
5151 | continue; |
5152 | } | |
5153 | ||
c2d11a7d | 5154 | buf[bc] = '\0'; |
6d820c5c | 5155 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 5156 | return -1; |
c2c6d25f | 5157 | } |
c906108c | 5158 | default: |
6d820c5c | 5159 | if (bc >= *sizeof_buf - 1) |
c906108c | 5160 | { |
6d820c5c DJ |
5161 | /* Make some more room in the buffer. */ |
5162 | *sizeof_buf *= 2; | |
5163 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
5164 | buf = *buf_p; | |
c906108c SS |
5165 | } |
5166 | ||
6d820c5c DJ |
5167 | buf[bc++] = c; |
5168 | csum += c; | |
5169 | continue; | |
c906108c SS |
5170 | } |
5171 | } | |
5172 | } | |
5173 | ||
5174 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
5175 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
5176 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
5177 | rather than timing out; this is used (in synchronous mode) to wait | |
5178 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
5179 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
5180 | don't have to change all the calls to getpkt to deal with the | |
5181 | return value, because at the moment I don't know what the right | |
23860348 | 5182 | thing to do it for those. */ |
c906108c | 5183 | void |
6d820c5c DJ |
5184 | getpkt (char **buf, |
5185 | long *sizeof_buf, | |
c2d11a7d | 5186 | int forever) |
d9fcf2fb JM |
5187 | { |
5188 | int timed_out; | |
5189 | ||
5190 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
5191 | } | |
5192 | ||
5193 | ||
5194 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
5195 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
5196 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
5197 | rather than timing out; this is used (in synchronous mode) to wait | |
5198 | for a target that is is executing user code to stop. If FOREVER == | |
5199 | 0, this function is allowed to time out gracefully and return an | |
0876f84a DJ |
5200 | indication of this to the caller. Otherwise return the number |
5201 | of bytes read. */ | |
3172dc30 | 5202 | static int |
6d820c5c | 5203 | getpkt_sane (char **buf, long *sizeof_buf, int forever) |
c906108c | 5204 | { |
2d717e4f | 5205 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
5206 | int c; |
5207 | int tries; | |
5208 | int timeout; | |
5209 | int val; | |
5210 | ||
2d717e4f DJ |
5211 | /* We're reading a new response. Make sure we don't look at a |
5212 | previously cached response. */ | |
5213 | rs->cached_wait_status = 0; | |
5214 | ||
6d820c5c | 5215 | strcpy (*buf, "timeout"); |
c906108c SS |
5216 | |
5217 | if (forever) | |
5218 | { | |
c906108c | 5219 | timeout = watchdog > 0 ? watchdog : -1; |
c906108c SS |
5220 | } |
5221 | ||
5222 | else | |
5223 | timeout = remote_timeout; | |
5224 | ||
5225 | #define MAX_TRIES 3 | |
5226 | ||
5227 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
5228 | { | |
5229 | /* This can loop forever if the remote side sends us characters | |
23860348 MS |
5230 | continuously, but if it pauses, we'll get a zero from |
5231 | readchar because of timeout. Then we'll count that as a | |
5232 | retry. */ | |
c906108c | 5233 | |
23860348 MS |
5234 | /* Note that we will only wait forever prior to the start of a |
5235 | packet. After that, we expect characters to arrive at a | |
5236 | brisk pace. They should show up within remote_timeout | |
5237 | intervals. */ | |
c906108c SS |
5238 | |
5239 | do | |
5240 | { | |
5241 | c = readchar (timeout); | |
5242 | ||
5243 | if (c == SERIAL_TIMEOUT) | |
5244 | { | |
23860348 | 5245 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 5246 | { |
2acceee2 | 5247 | QUIT; |
c906108c | 5248 | target_mourn_inferior (); |
489eaeba | 5249 | error (_("Watchdog timeout has expired. Target detached.")); |
c906108c | 5250 | } |
c906108c | 5251 | if (remote_debug) |
0f71a2f6 | 5252 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c SS |
5253 | goto retry; |
5254 | } | |
5255 | } | |
5256 | while (c != '$'); | |
5257 | ||
5258 | /* We've found the start of a packet, now collect the data. */ | |
5259 | ||
c2d11a7d | 5260 | val = read_frame (buf, sizeof_buf); |
c906108c | 5261 | |
c2d11a7d | 5262 | if (val >= 0) |
c906108c SS |
5263 | { |
5264 | if (remote_debug) | |
43e526b9 JM |
5265 | { |
5266 | fprintf_unfiltered (gdb_stdlog, "Packet received: "); | |
0876f84a | 5267 | fputstrn_unfiltered (*buf, val, 0, gdb_stdlog); |
43e526b9 JM |
5268 | fprintf_unfiltered (gdb_stdlog, "\n"); |
5269 | } | |
2cd58942 | 5270 | serial_write (remote_desc, "+", 1); |
0876f84a | 5271 | return val; |
c906108c SS |
5272 | } |
5273 | ||
5274 | /* Try the whole thing again. */ | |
5275 | retry: | |
2cd58942 | 5276 | serial_write (remote_desc, "-", 1); |
c906108c SS |
5277 | } |
5278 | ||
2bc416ba | 5279 | /* We have tried hard enough, and just can't receive the packet. |
23860348 | 5280 | Give up. */ |
c906108c | 5281 | |
a3f17187 | 5282 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); |
2cd58942 | 5283 | serial_write (remote_desc, "+", 1); |
0876f84a | 5284 | return -1; |
c906108c SS |
5285 | } |
5286 | \f | |
5287 | static void | |
fba45db2 | 5288 | remote_kill (void) |
c906108c SS |
5289 | { |
5290 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
5291 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
5292 | if (kill_kludge) | |
5293 | { | |
5294 | kill_kludge = 0; | |
5295 | target_mourn_inferior (); | |
5296 | return; | |
5297 | } | |
5298 | ||
5299 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
5300 | speaking terms with the remote system. */ | |
c5aa993b | 5301 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
c906108c SS |
5302 | |
5303 | /* Don't wait for it to die. I'm not really sure it matters whether | |
5304 | we do or not. For the existing stubs, kill is a noop. */ | |
5305 | target_mourn_inferior (); | |
5306 | } | |
5307 | ||
23860348 | 5308 | /* Async version of remote_kill. */ |
43ff13b4 | 5309 | static void |
fba45db2 | 5310 | remote_async_kill (void) |
43ff13b4 | 5311 | { |
23860348 | 5312 | /* Unregister the file descriptor from the event loop. */ |
ed9a39eb | 5313 | if (target_is_async_p ()) |
2cd58942 | 5314 | serial_async (remote_desc, NULL, 0); |
43ff13b4 JM |
5315 | |
5316 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
5317 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
5318 | if (kill_kludge) | |
5319 | { | |
5320 | kill_kludge = 0; | |
5321 | target_mourn_inferior (); | |
5322 | return; | |
5323 | } | |
5324 | ||
23860348 MS |
5325 | /* Use catch_errors so the user can quit from gdb even when we |
5326 | aren't on speaking terms with the remote system. */ | |
c5aa993b | 5327 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
5328 | |
5329 | /* Don't wait for it to die. I'm not really sure it matters whether | |
5330 | we do or not. For the existing stubs, kill is a noop. */ | |
5331 | target_mourn_inferior (); | |
5332 | } | |
5333 | ||
c906108c | 5334 | static void |
fba45db2 | 5335 | remote_mourn (void) |
c906108c SS |
5336 | { |
5337 | remote_mourn_1 (&remote_ops); | |
5338 | } | |
5339 | ||
53a5351d | 5340 | static void |
fba45db2 | 5341 | remote_async_mourn (void) |
53a5351d JM |
5342 | { |
5343 | remote_mourn_1 (&remote_async_ops); | |
5344 | } | |
5345 | ||
c906108c SS |
5346 | /* Worker function for remote_mourn. */ |
5347 | static void | |
fba45db2 | 5348 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
5349 | { |
5350 | unpush_target (target); | |
5351 | generic_mourn_inferior (); | |
5352 | } | |
5353 | ||
2d717e4f DJ |
5354 | static void |
5355 | extended_remote_mourn_1 (struct target_ops *target) | |
5356 | { | |
5357 | struct remote_state *rs = get_remote_state (); | |
c906108c | 5358 | |
2d717e4f DJ |
5359 | /* Unlike "target remote", we do not want to unpush the target; then |
5360 | the next time the user says "run", we won't be connected. */ | |
5361 | ||
5362 | /* Call common code to mark the inferior as not running. */ | |
5363 | generic_mourn_inferior (); | |
5364 | ||
5365 | /* Check whether the target is running now - some remote stubs | |
5366 | automatically restart after kill. */ | |
5367 | putpkt ("?"); | |
5368 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5369 | ||
5370 | if (rs->buf[0] == 'S' || rs->buf[0] == 'T') | |
5371 | { | |
5372 | /* Assume that the target has been restarted. Set inferior_ptid | |
5373 | so that bits of core GDB realizes there's something here, e.g., | |
5374 | so that the user can say "kill" again. */ | |
5375 | inferior_ptid = pid_to_ptid (MAGIC_NULL_PID); | |
5376 | } | |
5377 | else | |
5378 | { | |
5379 | /* Mark this (still pushed) target as not executable until we | |
5380 | restart it. */ | |
5381 | target_mark_exited (target); | |
5382 | } | |
5383 | } | |
c906108c SS |
5384 | |
5385 | static void | |
2d717e4f | 5386 | extended_remote_mourn (void) |
c906108c | 5387 | { |
2d717e4f DJ |
5388 | extended_remote_mourn_1 (&extended_remote_ops); |
5389 | } | |
c906108c | 5390 | |
2d717e4f DJ |
5391 | static void |
5392 | extended_async_remote_mourn (void) | |
5393 | { | |
5394 | extended_remote_mourn_1 (&extended_async_remote_ops); | |
5395 | } | |
5396 | ||
5397 | static int | |
5398 | extended_remote_run (char *args) | |
5399 | { | |
5400 | struct remote_state *rs = get_remote_state (); | |
5401 | char *p; | |
5402 | int len; | |
c906108c | 5403 | |
2d717e4f DJ |
5404 | /* If the user has disabled vRun support, or we have detected that |
5405 | support is not available, do not try it. */ | |
5406 | if (remote_protocol_packets[PACKET_vRun].support == PACKET_DISABLE) | |
5407 | return -1; | |
424163ea | 5408 | |
2d717e4f DJ |
5409 | strcpy (rs->buf, "vRun;"); |
5410 | len = strlen (rs->buf); | |
c906108c | 5411 | |
2d717e4f DJ |
5412 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
5413 | error (_("Remote file name too long for run packet")); | |
5414 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf + len, 0); | |
5415 | ||
5416 | if (*args) | |
5417 | { | |
5418 | struct cleanup *back_to; | |
5419 | int i; | |
5420 | char **argv; | |
5421 | ||
5422 | argv = buildargv (args); | |
5423 | back_to = make_cleanup ((void (*) (void *)) freeargv, argv); | |
5424 | for (i = 0; argv[i] != NULL; i++) | |
5425 | { | |
5426 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
5427 | error (_("Argument list too long for run packet")); | |
5428 | rs->buf[len++] = ';'; | |
5429 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf + len, 0); | |
5430 | } | |
5431 | do_cleanups (back_to); | |
5432 | } | |
5433 | ||
5434 | rs->buf[len++] = '\0'; | |
5435 | ||
5436 | putpkt (rs->buf); | |
5437 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5438 | ||
5439 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun]) == PACKET_OK) | |
5440 | { | |
5441 | /* We have a wait response; we don't need it, though. All is well. */ | |
5442 | return 0; | |
5443 | } | |
5444 | else if (remote_protocol_packets[PACKET_vRun].support == PACKET_DISABLE) | |
5445 | /* It wasn't disabled before, but it is now. */ | |
5446 | return -1; | |
5447 | else | |
5448 | { | |
5449 | if (remote_exec_file[0] == '\0') | |
5450 | error (_("Running the default executable on the remote target failed; " | |
5451 | "try \"set remote exec-file\"?")); | |
5452 | else | |
5453 | error (_("Running \"%s\" on the remote target failed"), | |
5454 | remote_exec_file); | |
5455 | } | |
c906108c SS |
5456 | } |
5457 | ||
2d717e4f DJ |
5458 | /* In the extended protocol we want to be able to do things like |
5459 | "run" and have them basically work as expected. So we need | |
5460 | a special create_inferior function. We support changing the | |
5461 | executable file and the command line arguments, but not the | |
5462 | environment. */ | |
5463 | ||
43ff13b4 | 5464 | static void |
2d717e4f DJ |
5465 | extended_remote_create_inferior_1 (char *exec_file, char *args, |
5466 | char **env, int from_tty, | |
5467 | int async_p) | |
43ff13b4 | 5468 | { |
43ff13b4 | 5469 | /* If running asynchronously, register the target file descriptor |
23860348 | 5470 | with the event loop. */ |
2d717e4f | 5471 | if (async_p && target_can_async_p ()) |
2acceee2 | 5472 | target_async (inferior_event_handler, 0); |
43ff13b4 JM |
5473 | |
5474 | /* Now restart the remote server. */ | |
2d717e4f DJ |
5475 | if (extended_remote_run (args) == -1) |
5476 | { | |
5477 | /* vRun was not supported. Fail if we need it to do what the | |
5478 | user requested. */ | |
5479 | if (remote_exec_file[0]) | |
5480 | error (_("Remote target does not support \"set remote exec-file\"")); | |
5481 | if (args[0]) | |
5482 | error (_("Remote target does not support \"set args\" or run <ARGS>")); | |
43ff13b4 | 5483 | |
2d717e4f DJ |
5484 | /* Fall back to "R". */ |
5485 | extended_remote_restart (); | |
5486 | } | |
424163ea | 5487 | |
2d717e4f | 5488 | /* Now mark the inferior as running before we do anything else. */ |
df7df359 | 5489 | attach_flag = 0; |
2d717e4f DJ |
5490 | inferior_ptid = pid_to_ptid (MAGIC_NULL_PID); |
5491 | if (async_p) | |
5492 | target_mark_running (&extended_async_remote_ops); | |
5493 | else | |
5494 | target_mark_running (&extended_remote_ops); | |
5495 | ||
5496 | /* Get updated offsets, if the stub uses qOffsets. */ | |
5497 | get_offsets (); | |
43ff13b4 JM |
5498 | |
5499 | /* Clean up from the last time we were running. */ | |
2d717e4f DJ |
5500 | init_thread_list (); |
5501 | init_wait_for_inferior (); | |
5502 | } | |
5503 | ||
5504 | static void | |
5505 | extended_remote_create_inferior (char *exec_file, char *args, | |
5506 | char **env, int from_tty) | |
5507 | { | |
5508 | extended_remote_create_inferior_1 (exec_file, args, env, from_tty, 0); | |
5509 | } | |
5510 | ||
5511 | static void | |
5512 | extended_remote_async_create_inferior (char *exec_file, char *args, | |
5513 | char **env, int from_tty) | |
5514 | { | |
5515 | extended_remote_create_inferior_1 (exec_file, args, env, from_tty, 1); | |
43ff13b4 | 5516 | } |
c906108c | 5517 | \f |
c5aa993b | 5518 | |
8181d85f DJ |
5519 | /* Insert a breakpoint. On targets that have software breakpoint |
5520 | support, we ask the remote target to do the work; on targets | |
5521 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c SS |
5522 | |
5523 | static int | |
8181d85f | 5524 | remote_insert_breakpoint (struct bp_target_info *bp_tgt) |
c906108c | 5525 | { |
8181d85f | 5526 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 5527 | struct remote_state *rs = get_remote_state (); |
96baa820 | 5528 | |
d471ea57 AC |
5529 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
5530 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
5531 | fails, and the user has explicitly requested the Z support then | |
23860348 | 5532 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 5533 | |
444abaca | 5534 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 5535 | { |
6d820c5c | 5536 | char *p = rs->buf; |
802188a7 | 5537 | |
96baa820 JM |
5538 | *(p++) = 'Z'; |
5539 | *(p++) = '0'; | |
5540 | *(p++) = ','; | |
3b3b875c UW |
5541 | gdbarch_breakpoint_from_pc |
5542 | (current_gdbarch, &bp_tgt->placed_address, &bp_tgt->placed_size); | |
8181d85f DJ |
5543 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
5544 | p += hexnumstr (p, addr); | |
5545 | sprintf (p, ",%d", bp_tgt->placed_size); | |
802188a7 | 5546 | |
6d820c5c DJ |
5547 | putpkt (rs->buf); |
5548 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5549 | |
6d820c5c | 5550 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 5551 | { |
d471ea57 AC |
5552 | case PACKET_ERROR: |
5553 | return -1; | |
5554 | case PACKET_OK: | |
5555 | return 0; | |
5556 | case PACKET_UNKNOWN: | |
5557 | break; | |
96baa820 JM |
5558 | } |
5559 | } | |
c906108c | 5560 | |
8181d85f | 5561 | return memory_insert_breakpoint (bp_tgt); |
c906108c SS |
5562 | } |
5563 | ||
5564 | static int | |
8181d85f | 5565 | remote_remove_breakpoint (struct bp_target_info *bp_tgt) |
c906108c | 5566 | { |
8181d85f | 5567 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 5568 | struct remote_state *rs = get_remote_state (); |
96baa820 JM |
5569 | int bp_size; |
5570 | ||
444abaca | 5571 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 5572 | { |
6d820c5c | 5573 | char *p = rs->buf; |
802188a7 | 5574 | |
96baa820 JM |
5575 | *(p++) = 'z'; |
5576 | *(p++) = '0'; | |
5577 | *(p++) = ','; | |
5578 | ||
8181d85f DJ |
5579 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
5580 | p += hexnumstr (p, addr); | |
5581 | sprintf (p, ",%d", bp_tgt->placed_size); | |
802188a7 | 5582 | |
6d820c5c DJ |
5583 | putpkt (rs->buf); |
5584 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5585 | |
6d820c5c | 5586 | return (rs->buf[0] == 'E'); |
96baa820 JM |
5587 | } |
5588 | ||
8181d85f | 5589 | return memory_remove_breakpoint (bp_tgt); |
c906108c SS |
5590 | } |
5591 | ||
d471ea57 AC |
5592 | static int |
5593 | watchpoint_to_Z_packet (int type) | |
5594 | { | |
5595 | switch (type) | |
5596 | { | |
5597 | case hw_write: | |
bb858e6a | 5598 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
5599 | break; |
5600 | case hw_read: | |
bb858e6a | 5601 | return Z_PACKET_READ_WP; |
d471ea57 AC |
5602 | break; |
5603 | case hw_access: | |
bb858e6a | 5604 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
5605 | break; |
5606 | default: | |
8e65ff28 | 5607 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5608 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
5609 | } |
5610 | } | |
5611 | ||
3c3bea1c | 5612 | static int |
fba45db2 | 5613 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 5614 | { |
d01949b6 | 5615 | struct remote_state *rs = get_remote_state (); |
e514a9d6 | 5616 | char *p; |
d471ea57 | 5617 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 5618 | |
444abaca | 5619 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
5cffb350 | 5620 | return -1; |
802188a7 | 5621 | |
6d820c5c DJ |
5622 | sprintf (rs->buf, "Z%x,", packet); |
5623 | p = strchr (rs->buf, '\0'); | |
96baa820 JM |
5624 | addr = remote_address_masked (addr); |
5625 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 5626 | sprintf (p, ",%x", len); |
802188a7 | 5627 | |
6d820c5c DJ |
5628 | putpkt (rs->buf); |
5629 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5630 | |
6d820c5c | 5631 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
5632 | { |
5633 | case PACKET_ERROR: | |
5634 | case PACKET_UNKNOWN: | |
5635 | return -1; | |
5636 | case PACKET_OK: | |
5637 | return 0; | |
5638 | } | |
8e65ff28 | 5639 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5640 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
5641 | } |
5642 | ||
d471ea57 | 5643 | |
3c3bea1c | 5644 | static int |
fba45db2 | 5645 | remote_remove_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 5646 | { |
d01949b6 | 5647 | struct remote_state *rs = get_remote_state (); |
e514a9d6 | 5648 | char *p; |
d471ea57 AC |
5649 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
5650 | ||
444abaca | 5651 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
5cffb350 | 5652 | return -1; |
802188a7 | 5653 | |
6d820c5c DJ |
5654 | sprintf (rs->buf, "z%x,", packet); |
5655 | p = strchr (rs->buf, '\0'); | |
96baa820 JM |
5656 | addr = remote_address_masked (addr); |
5657 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 5658 | sprintf (p, ",%x", len); |
6d820c5c DJ |
5659 | putpkt (rs->buf); |
5660 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5661 | |
6d820c5c | 5662 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
5663 | { |
5664 | case PACKET_ERROR: | |
5665 | case PACKET_UNKNOWN: | |
5666 | return -1; | |
5667 | case PACKET_OK: | |
5668 | return 0; | |
5669 | } | |
8e65ff28 | 5670 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5671 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
5672 | } |
5673 | ||
3c3bea1c | 5674 | |
501eef12 AC |
5675 | int remote_hw_watchpoint_limit = -1; |
5676 | int remote_hw_breakpoint_limit = -1; | |
d471ea57 | 5677 | |
b9362cc7 | 5678 | static int |
3c3bea1c | 5679 | remote_check_watch_resources (int type, int cnt, int ot) |
96baa820 | 5680 | { |
3c3bea1c GS |
5681 | if (type == bp_hardware_breakpoint) |
5682 | { | |
5683 | if (remote_hw_breakpoint_limit == 0) | |
5684 | return 0; | |
501eef12 AC |
5685 | else if (remote_hw_breakpoint_limit < 0) |
5686 | return 1; | |
3c3bea1c GS |
5687 | else if (cnt <= remote_hw_breakpoint_limit) |
5688 | return 1; | |
5689 | } | |
5690 | else | |
5691 | { | |
5692 | if (remote_hw_watchpoint_limit == 0) | |
5693 | return 0; | |
501eef12 AC |
5694 | else if (remote_hw_watchpoint_limit < 0) |
5695 | return 1; | |
3c3bea1c GS |
5696 | else if (ot) |
5697 | return -1; | |
5698 | else if (cnt <= remote_hw_watchpoint_limit) | |
5699 | return 1; | |
5700 | } | |
5701 | return -1; | |
5702 | } | |
5703 | ||
b9362cc7 | 5704 | static int |
3c3bea1c GS |
5705 | remote_stopped_by_watchpoint (void) |
5706 | { | |
5707 | return remote_stopped_by_watchpoint_p; | |
5708 | } | |
5709 | ||
4aa7a7f5 JJ |
5710 | static int |
5711 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 5712 | { |
4aa7a7f5 | 5713 | int rc = 0; |
d983da9c | 5714 | if (remote_stopped_by_watchpoint ()) |
4aa7a7f5 JJ |
5715 | { |
5716 | *addr_p = remote_watch_data_address; | |
5717 | rc = 1; | |
5718 | } | |
5719 | ||
5720 | return rc; | |
3c3bea1c GS |
5721 | } |
5722 | ||
5723 | ||
5724 | static int | |
8181d85f | 5725 | remote_insert_hw_breakpoint (struct bp_target_info *bp_tgt) |
3c3bea1c | 5726 | { |
8181d85f | 5727 | CORE_ADDR addr; |
d01949b6 | 5728 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 5729 | char *p = rs->buf; |
802188a7 | 5730 | |
c8189ed1 | 5731 | /* The length field should be set to the size of a breakpoint |
8181d85f | 5732 | instruction, even though we aren't inserting one ourselves. */ |
c8189ed1 | 5733 | |
3b3b875c UW |
5734 | gdbarch_breakpoint_from_pc |
5735 | (current_gdbarch, &bp_tgt->placed_address, &bp_tgt->placed_size); | |
3c3bea1c | 5736 | |
444abaca | 5737 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 5738 | return -1; |
2bc416ba | 5739 | |
96baa820 JM |
5740 | *(p++) = 'Z'; |
5741 | *(p++) = '1'; | |
5742 | *(p++) = ','; | |
802188a7 | 5743 | |
8181d85f | 5744 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 5745 | p += hexnumstr (p, (ULONGEST) addr); |
8181d85f | 5746 | sprintf (p, ",%x", bp_tgt->placed_size); |
96baa820 | 5747 | |
6d820c5c DJ |
5748 | putpkt (rs->buf); |
5749 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5750 | |
6d820c5c | 5751 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
5752 | { |
5753 | case PACKET_ERROR: | |
5754 | case PACKET_UNKNOWN: | |
5755 | return -1; | |
5756 | case PACKET_OK: | |
5757 | return 0; | |
5758 | } | |
8e65ff28 | 5759 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5760 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
5761 | } |
5762 | ||
d471ea57 | 5763 | |
802188a7 | 5764 | static int |
8181d85f | 5765 | remote_remove_hw_breakpoint (struct bp_target_info *bp_tgt) |
96baa820 | 5766 | { |
8181d85f | 5767 | CORE_ADDR addr; |
d01949b6 | 5768 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 5769 | char *p = rs->buf; |
c8189ed1 | 5770 | |
444abaca | 5771 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 5772 | return -1; |
802188a7 | 5773 | |
96baa820 JM |
5774 | *(p++) = 'z'; |
5775 | *(p++) = '1'; | |
5776 | *(p++) = ','; | |
802188a7 | 5777 | |
8181d85f | 5778 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 5779 | p += hexnumstr (p, (ULONGEST) addr); |
8181d85f | 5780 | sprintf (p, ",%x", bp_tgt->placed_size); |
96baa820 | 5781 | |
6d820c5c DJ |
5782 | putpkt (rs->buf); |
5783 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 5784 | |
6d820c5c | 5785 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
5786 | { |
5787 | case PACKET_ERROR: | |
5788 | case PACKET_UNKNOWN: | |
5789 | return -1; | |
5790 | case PACKET_OK: | |
5791 | return 0; | |
5792 | } | |
8e65ff28 | 5793 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5794 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 5795 | } |
96baa820 | 5796 | |
c906108c SS |
5797 | /* Some targets are only capable of doing downloads, and afterwards |
5798 | they switch to the remote serial protocol. This function provides | |
5799 | a clean way to get from the download target to the remote target. | |
5800 | It's basically just a wrapper so that we don't have to expose any | |
5801 | of the internal workings of remote.c. | |
5802 | ||
5803 | Prior to calling this routine, you should shutdown the current | |
5804 | target code, else you will get the "A program is being debugged | |
5805 | already..." message. Usually a call to pop_target() suffices. */ | |
5806 | ||
5807 | void | |
fba45db2 | 5808 | push_remote_target (char *name, int from_tty) |
c906108c | 5809 | { |
a3f17187 | 5810 | printf_filtered (_("Switching to remote protocol\n")); |
c906108c SS |
5811 | remote_open (name, from_tty); |
5812 | } | |
5813 | ||
23860348 | 5814 | /* Table used by the crc32 function to calcuate the checksum. */ |
c906108c | 5815 | |
c5aa993b JM |
5816 | static unsigned long crc32_table[256] = |
5817 | {0, 0}; | |
c906108c SS |
5818 | |
5819 | static unsigned long | |
fba45db2 | 5820 | crc32 (unsigned char *buf, int len, unsigned int crc) |
c906108c | 5821 | { |
c5aa993b | 5822 | if (!crc32_table[1]) |
c906108c | 5823 | { |
23860348 | 5824 | /* Initialize the CRC table and the decoding table. */ |
c906108c SS |
5825 | int i, j; |
5826 | unsigned int c; | |
5827 | ||
5828 | for (i = 0; i < 256; i++) | |
c5aa993b JM |
5829 | { |
5830 | for (c = i << 24, j = 8; j > 0; --j) | |
5831 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
5832 | crc32_table[i] = c; | |
5833 | } | |
c906108c SS |
5834 | } |
5835 | ||
5836 | while (len--) | |
5837 | { | |
5838 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |
5839 | buf++; | |
5840 | } | |
5841 | return crc; | |
5842 | } | |
5843 | ||
5844 | /* compare-sections command | |
5845 | ||
5846 | With no arguments, compares each loadable section in the exec bfd | |
5847 | with the same memory range on the target, and reports mismatches. | |
5848 | Useful for verifying the image on the target against the exec file. | |
5849 | Depends on the target understanding the new "qCRC:" request. */ | |
5850 | ||
e514a9d6 JM |
5851 | /* FIXME: cagney/1999-10-26: This command should be broken down into a |
5852 | target method (target verify memory) and generic version of the | |
5853 | actual command. This will allow other high-level code (especially | |
23860348 | 5854 | generic_load()) to make use of this target functionality. */ |
e514a9d6 | 5855 | |
c906108c | 5856 | static void |
fba45db2 | 5857 | compare_sections_command (char *args, int from_tty) |
c906108c | 5858 | { |
d01949b6 | 5859 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
5860 | asection *s; |
5861 | unsigned long host_crc, target_crc; | |
5862 | extern bfd *exec_bfd; | |
5863 | struct cleanup *old_chain; | |
085dd6e6 JM |
5864 | char *tmp; |
5865 | char *sectdata; | |
ce359b09 | 5866 | const char *sectname; |
c906108c SS |
5867 | bfd_size_type size; |
5868 | bfd_vma lma; | |
5869 | int matched = 0; | |
5870 | int mismatched = 0; | |
5871 | ||
5872 | if (!exec_bfd) | |
8a3fe4f8 | 5873 | error (_("command cannot be used without an exec file")); |
c906108c SS |
5874 | if (!current_target.to_shortname || |
5875 | strcmp (current_target.to_shortname, "remote") != 0) | |
8a3fe4f8 | 5876 | error (_("command can only be used with remote target")); |
c906108c | 5877 | |
c5aa993b | 5878 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
5879 | { |
5880 | if (!(s->flags & SEC_LOAD)) | |
c5aa993b | 5881 | continue; /* skip non-loadable section */ |
c906108c | 5882 | |
2c500098 | 5883 | size = bfd_get_section_size (s); |
c906108c | 5884 | if (size == 0) |
c5aa993b | 5885 | continue; /* skip zero-length section */ |
c906108c | 5886 | |
ce359b09 | 5887 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 5888 | if (args && strcmp (args, sectname) != 0) |
c5aa993b | 5889 | continue; /* not the section selected by user */ |
c906108c | 5890 | |
c5aa993b | 5891 | matched = 1; /* do this section */ |
c906108c | 5892 | lma = s->lma; |
23860348 | 5893 | /* FIXME: assumes lma can fit into long. */ |
ea9c271d | 5894 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", |
ecbc58df | 5895 | (long) lma, (long) size); |
6d820c5c | 5896 | putpkt (rs->buf); |
c906108c | 5897 | |
23860348 MS |
5898 | /* Be clever; compute the host_crc before waiting for target |
5899 | reply. */ | |
c906108c | 5900 | sectdata = xmalloc (size); |
b8c9b27d | 5901 | old_chain = make_cleanup (xfree, sectdata); |
c906108c SS |
5902 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
5903 | host_crc = crc32 ((unsigned char *) sectdata, size, 0xffffffff); | |
5904 | ||
6d820c5c DJ |
5905 | getpkt (&rs->buf, &rs->buf_size, 0); |
5906 | if (rs->buf[0] == 'E') | |
8a3fe4f8 | 5907 | error (_("target memory fault, section %s, range 0x%s -- 0x%s"), |
823ca731 | 5908 | sectname, paddr (lma), paddr (lma + size)); |
6d820c5c | 5909 | if (rs->buf[0] != 'C') |
8a3fe4f8 | 5910 | error (_("remote target does not support this operation")); |
c906108c | 5911 | |
6d820c5c | 5912 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) |
c906108c SS |
5913 | target_crc = target_crc * 16 + fromhex (*tmp); |
5914 | ||
d4f3574e SS |
5915 | printf_filtered ("Section %s, range 0x%s -- 0x%s: ", |
5916 | sectname, paddr (lma), paddr (lma + size)); | |
c906108c SS |
5917 | if (host_crc == target_crc) |
5918 | printf_filtered ("matched.\n"); | |
5919 | else | |
c5aa993b JM |
5920 | { |
5921 | printf_filtered ("MIS-MATCHED!\n"); | |
5922 | mismatched++; | |
5923 | } | |
c906108c SS |
5924 | |
5925 | do_cleanups (old_chain); | |
5926 | } | |
5927 | if (mismatched > 0) | |
8a3fe4f8 AC |
5928 | warning (_("One or more sections of the remote executable does not match\n\ |
5929 | the loaded file\n")); | |
c906108c | 5930 | if (args && !matched) |
a3f17187 | 5931 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
5932 | } |
5933 | ||
0e7f50da UW |
5934 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
5935 | into remote target. The number of bytes written to the remote | |
5936 | target is returned, or -1 for error. */ | |
5937 | ||
5938 | static LONGEST | |
5939 | remote_write_qxfer (struct target_ops *ops, const char *object_name, | |
5940 | const char *annex, const gdb_byte *writebuf, | |
5941 | ULONGEST offset, LONGEST len, | |
5942 | struct packet_config *packet) | |
5943 | { | |
5944 | int i, buf_len; | |
5945 | ULONGEST n; | |
5946 | gdb_byte *wbuf; | |
5947 | struct remote_state *rs = get_remote_state (); | |
5948 | int max_size = get_memory_write_packet_size (); | |
5949 | ||
5950 | if (packet->support == PACKET_DISABLE) | |
5951 | return -1; | |
5952 | ||
5953 | /* Insert header. */ | |
5954 | i = snprintf (rs->buf, max_size, | |
5955 | "qXfer:%s:write:%s:%s:", | |
5956 | object_name, annex ? annex : "", | |
5957 | phex_nz (offset, sizeof offset)); | |
5958 | max_size -= (i + 1); | |
5959 | ||
5960 | /* Escape as much data as fits into rs->buf. */ | |
5961 | buf_len = remote_escape_output | |
5962 | (writebuf, len, (rs->buf + i), &max_size, max_size); | |
5963 | ||
5964 | if (putpkt_binary (rs->buf, i + buf_len) < 0 | |
5965 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
5966 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
5967 | return -1; | |
5968 | ||
5969 | unpack_varlen_hex (rs->buf, &n); | |
5970 | return n; | |
5971 | } | |
5972 | ||
0876f84a DJ |
5973 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
5974 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
5975 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
5976 | The number of bytes read may be less than LEN without indicating an | |
5977 | EOF. PACKET is checked and updated to indicate whether the remote | |
5978 | target supports this object. */ | |
5979 | ||
5980 | static LONGEST | |
5981 | remote_read_qxfer (struct target_ops *ops, const char *object_name, | |
5982 | const char *annex, | |
5983 | gdb_byte *readbuf, ULONGEST offset, LONGEST len, | |
5984 | struct packet_config *packet) | |
5985 | { | |
5986 | static char *finished_object; | |
5987 | static char *finished_annex; | |
5988 | static ULONGEST finished_offset; | |
5989 | ||
5990 | struct remote_state *rs = get_remote_state (); | |
5991 | unsigned int total = 0; | |
5992 | LONGEST i, n, packet_len; | |
5993 | ||
5994 | if (packet->support == PACKET_DISABLE) | |
5995 | return -1; | |
5996 | ||
5997 | /* Check whether we've cached an end-of-object packet that matches | |
5998 | this request. */ | |
5999 | if (finished_object) | |
6000 | { | |
6001 | if (strcmp (object_name, finished_object) == 0 | |
6002 | && strcmp (annex ? annex : "", finished_annex) == 0 | |
6003 | && offset == finished_offset) | |
6004 | return 0; | |
6005 | ||
6006 | /* Otherwise, we're now reading something different. Discard | |
6007 | the cache. */ | |
6008 | xfree (finished_object); | |
6009 | xfree (finished_annex); | |
6010 | finished_object = NULL; | |
6011 | finished_annex = NULL; | |
6012 | } | |
6013 | ||
6014 | /* Request only enough to fit in a single packet. The actual data | |
6015 | may not, since we don't know how much of it will need to be escaped; | |
6016 | the target is free to respond with slightly less data. We subtract | |
6017 | five to account for the response type and the protocol frame. */ | |
6018 | n = min (get_remote_packet_size () - 5, len); | |
6019 | snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s", | |
6020 | object_name, annex ? annex : "", | |
6021 | phex_nz (offset, sizeof offset), | |
6022 | phex_nz (n, sizeof n)); | |
6023 | i = putpkt (rs->buf); | |
6024 | if (i < 0) | |
6025 | return -1; | |
6026 | ||
6027 | rs->buf[0] = '\0'; | |
6028 | packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
6029 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) | |
6030 | return -1; | |
6031 | ||
6032 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
6033 | error (_("Unknown remote qXfer reply: %s"), rs->buf); | |
6034 | ||
6035 | /* 'm' means there is (or at least might be) more data after this | |
6036 | batch. That does not make sense unless there's at least one byte | |
6037 | of data in this reply. */ | |
6038 | if (rs->buf[0] == 'm' && packet_len == 1) | |
6039 | error (_("Remote qXfer reply contained no data.")); | |
6040 | ||
6041 | /* Got some data. */ | |
6042 | i = remote_unescape_input (rs->buf + 1, packet_len - 1, readbuf, n); | |
6043 | ||
6044 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
6045 | or possibly empty. If we have the final block of a non-empty |
6046 | object, record this fact to bypass a subsequent partial read. */ | |
6047 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a DJ |
6048 | { |
6049 | finished_object = xstrdup (object_name); | |
6050 | finished_annex = xstrdup (annex ? annex : ""); | |
6051 | finished_offset = offset + i; | |
6052 | } | |
6053 | ||
6054 | return i; | |
6055 | } | |
6056 | ||
1e3ff5ad | 6057 | static LONGEST |
4b8a223f | 6058 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
961cb7b5 MK |
6059 | const char *annex, gdb_byte *readbuf, |
6060 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
c906108c | 6061 | { |
d01949b6 | 6062 | struct remote_state *rs = get_remote_state (); |
c906108c | 6063 | int i; |
6d820c5c | 6064 | char *p2; |
1e3ff5ad | 6065 | char query_type; |
c906108c | 6066 | |
b2182ed2 | 6067 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
6068 | if (object == TARGET_OBJECT_MEMORY) |
6069 | { | |
6070 | int xfered; | |
6071 | errno = 0; | |
6072 | ||
2d717e4f DJ |
6073 | /* If the remote target is connected but not running, we should |
6074 | pass this request down to a lower stratum (e.g. the executable | |
6075 | file). */ | |
6076 | if (!target_has_execution) | |
6077 | return 0; | |
6078 | ||
21e3b9b9 | 6079 | if (writebuf != NULL) |
b2182ed2 | 6080 | xfered = remote_write_bytes (offset, writebuf, len); |
21e3b9b9 | 6081 | else |
b2182ed2 | 6082 | xfered = remote_read_bytes (offset, readbuf, len); |
21e3b9b9 DJ |
6083 | |
6084 | if (xfered > 0) | |
6085 | return xfered; | |
6086 | else if (xfered == 0 && errno == 0) | |
6087 | return 0; | |
6088 | else | |
6089 | return -1; | |
6090 | } | |
6091 | ||
0e7f50da UW |
6092 | /* Handle SPU memory using qxfer packets. */ |
6093 | if (object == TARGET_OBJECT_SPU) | |
6094 | { | |
6095 | if (readbuf) | |
6096 | return remote_read_qxfer (ops, "spu", annex, readbuf, offset, len, | |
6097 | &remote_protocol_packets | |
6098 | [PACKET_qXfer_spu_read]); | |
6099 | else | |
6100 | return remote_write_qxfer (ops, "spu", annex, writebuf, offset, len, | |
6101 | &remote_protocol_packets | |
6102 | [PACKET_qXfer_spu_write]); | |
6103 | } | |
6104 | ||
a76d924d DJ |
6105 | /* Only handle flash writes. */ |
6106 | if (writebuf != NULL) | |
6107 | { | |
6108 | LONGEST xfered; | |
6109 | ||
6110 | switch (object) | |
6111 | { | |
6112 | case TARGET_OBJECT_FLASH: | |
6113 | xfered = remote_flash_write (ops, offset, len, writebuf); | |
6114 | ||
6115 | if (xfered > 0) | |
6116 | return xfered; | |
6117 | else if (xfered == 0 && errno == 0) | |
6118 | return 0; | |
6119 | else | |
6120 | return -1; | |
6121 | ||
6122 | default: | |
6123 | return -1; | |
6124 | } | |
6125 | } | |
4b8a223f | 6126 | |
1e3ff5ad AC |
6127 | /* Map pre-existing objects onto letters. DO NOT do this for new |
6128 | objects!!! Instead specify new query packets. */ | |
6129 | switch (object) | |
c906108c | 6130 | { |
1e3ff5ad AC |
6131 | case TARGET_OBJECT_AVR: |
6132 | query_type = 'R'; | |
6133 | break; | |
802188a7 RM |
6134 | |
6135 | case TARGET_OBJECT_AUXV: | |
0876f84a DJ |
6136 | gdb_assert (annex == NULL); |
6137 | return remote_read_qxfer (ops, "auxv", annex, readbuf, offset, len, | |
6138 | &remote_protocol_packets[PACKET_qXfer_auxv]); | |
802188a7 | 6139 | |
23181151 DJ |
6140 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
6141 | return remote_read_qxfer | |
6142 | (ops, "features", annex, readbuf, offset, len, | |
6143 | &remote_protocol_packets[PACKET_qXfer_features]); | |
6144 | ||
cfa9d6d9 DJ |
6145 | case TARGET_OBJECT_LIBRARIES: |
6146 | return remote_read_qxfer | |
6147 | (ops, "libraries", annex, readbuf, offset, len, | |
6148 | &remote_protocol_packets[PACKET_qXfer_libraries]); | |
6149 | ||
fd79ecee DJ |
6150 | case TARGET_OBJECT_MEMORY_MAP: |
6151 | gdb_assert (annex == NULL); | |
6152 | return remote_read_qxfer (ops, "memory-map", annex, readbuf, offset, len, | |
6153 | &remote_protocol_packets[PACKET_qXfer_memory_map]); | |
6154 | ||
1e3ff5ad | 6155 | default: |
c906108c SS |
6156 | return -1; |
6157 | } | |
6158 | ||
4b8a223f | 6159 | /* Note: a zero OFFSET and LEN can be used to query the minimum |
1e3ff5ad | 6160 | buffer size. */ |
4b8a223f | 6161 | if (offset == 0 && len == 0) |
ea9c271d DJ |
6162 | return (get_remote_packet_size ()); |
6163 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not | |
24b06219 | 6164 | large enough let the caller deal with it. */ |
ea9c271d | 6165 | if (len < get_remote_packet_size ()) |
1e3ff5ad | 6166 | return -1; |
ea9c271d | 6167 | len = get_remote_packet_size (); |
1e3ff5ad | 6168 | |
23860348 | 6169 | /* Except for querying the minimum buffer size, target must be open. */ |
c5aa993b | 6170 | if (!remote_desc) |
8a3fe4f8 | 6171 | error (_("remote query is only available after target open")); |
c906108c | 6172 | |
1e3ff5ad | 6173 | gdb_assert (annex != NULL); |
4b8a223f | 6174 | gdb_assert (readbuf != NULL); |
c906108c | 6175 | |
6d820c5c | 6176 | p2 = rs->buf; |
c906108c SS |
6177 | *p2++ = 'q'; |
6178 | *p2++ = query_type; | |
6179 | ||
23860348 MS |
6180 | /* We used one buffer char for the remote protocol q command and |
6181 | another for the query type. As the remote protocol encapsulation | |
6182 | uses 4 chars plus one extra in case we are debugging | |
6183 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
6184 | string. */ | |
c906108c | 6185 | i = 0; |
ea9c271d | 6186 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 6187 | { |
1e3ff5ad AC |
6188 | /* Bad caller may have sent forbidden characters. */ |
6189 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
6190 | *p2++ = annex[i]; | |
c906108c SS |
6191 | i++; |
6192 | } | |
1e3ff5ad AC |
6193 | *p2 = '\0'; |
6194 | gdb_assert (annex[i] == '\0'); | |
c906108c | 6195 | |
6d820c5c | 6196 | i = putpkt (rs->buf); |
c5aa993b JM |
6197 | if (i < 0) |
6198 | return i; | |
c906108c | 6199 | |
6d820c5c DJ |
6200 | getpkt (&rs->buf, &rs->buf_size, 0); |
6201 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 6202 | |
cfd77fa1 | 6203 | return strlen ((char *) readbuf); |
c906108c SS |
6204 | } |
6205 | ||
96baa820 JM |
6206 | static void |
6207 | remote_rcmd (char *command, | |
d9fcf2fb | 6208 | struct ui_file *outbuf) |
96baa820 | 6209 | { |
d01949b6 | 6210 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 6211 | char *p = rs->buf; |
96baa820 JM |
6212 | |
6213 | if (!remote_desc) | |
8a3fe4f8 | 6214 | error (_("remote rcmd is only available after target open")); |
96baa820 | 6215 | |
23860348 | 6216 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
6217 | if (command == NULL) |
6218 | command = ""; | |
6219 | ||
23860348 | 6220 | /* The query prefix. */ |
2e9f7625 DJ |
6221 | strcpy (rs->buf, "qRcmd,"); |
6222 | p = strchr (rs->buf, '\0'); | |
96baa820 | 6223 | |
2e9f7625 | 6224 | if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/) > get_remote_packet_size ()) |
8a3fe4f8 | 6225 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 6226 | |
23860348 | 6227 | /* Encode the actual command. */ |
cfd77fa1 | 6228 | bin2hex ((gdb_byte *) command, p, 0); |
96baa820 | 6229 | |
6d820c5c | 6230 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 6231 | error (_("Communication problem with target.")); |
96baa820 JM |
6232 | |
6233 | /* get/display the response */ | |
6234 | while (1) | |
6235 | { | |
2e9f7625 DJ |
6236 | char *buf; |
6237 | ||
23860348 | 6238 | /* XXX - see also tracepoint.c:remote_get_noisy_reply(). */ |
2e9f7625 | 6239 | rs->buf[0] = '\0'; |
6d820c5c | 6240 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 6241 | buf = rs->buf; |
96baa820 | 6242 | if (buf[0] == '\0') |
8a3fe4f8 | 6243 | error (_("Target does not support this command.")); |
96baa820 JM |
6244 | if (buf[0] == 'O' && buf[1] != 'K') |
6245 | { | |
23860348 | 6246 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
6247 | continue; |
6248 | } | |
6249 | if (strcmp (buf, "OK") == 0) | |
6250 | break; | |
7be570e7 JM |
6251 | if (strlen (buf) == 3 && buf[0] == 'E' |
6252 | && isdigit (buf[1]) && isdigit (buf[2])) | |
6253 | { | |
8a3fe4f8 | 6254 | error (_("Protocol error with Rcmd")); |
7be570e7 | 6255 | } |
96baa820 JM |
6256 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
6257 | { | |
6258 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
6259 | fputc_unfiltered (c, outbuf); | |
6260 | } | |
6261 | break; | |
6262 | } | |
6263 | } | |
6264 | ||
fd79ecee DJ |
6265 | static VEC(mem_region_s) * |
6266 | remote_memory_map (struct target_ops *ops) | |
6267 | { | |
6268 | VEC(mem_region_s) *result = NULL; | |
6269 | char *text = target_read_stralloc (¤t_target, | |
6270 | TARGET_OBJECT_MEMORY_MAP, NULL); | |
6271 | ||
6272 | if (text) | |
6273 | { | |
6274 | struct cleanup *back_to = make_cleanup (xfree, text); | |
6275 | result = parse_memory_map (text); | |
6276 | do_cleanups (back_to); | |
6277 | } | |
6278 | ||
6279 | return result; | |
6280 | } | |
6281 | ||
c906108c | 6282 | static void |
fba45db2 | 6283 | packet_command (char *args, int from_tty) |
c906108c | 6284 | { |
d01949b6 | 6285 | struct remote_state *rs = get_remote_state (); |
c906108c | 6286 | |
c5aa993b | 6287 | if (!remote_desc) |
8a3fe4f8 | 6288 | error (_("command can only be used with remote target")); |
c906108c | 6289 | |
c5aa993b | 6290 | if (!args) |
8a3fe4f8 | 6291 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
6292 | |
6293 | puts_filtered ("sending: "); | |
6294 | print_packet (args); | |
6295 | puts_filtered ("\n"); | |
6296 | putpkt (args); | |
6297 | ||
6d820c5c | 6298 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 6299 | puts_filtered ("received: "); |
6d820c5c | 6300 | print_packet (rs->buf); |
c906108c SS |
6301 | puts_filtered ("\n"); |
6302 | } | |
6303 | ||
6304 | #if 0 | |
23860348 | 6305 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 6306 | |
a14ed312 | 6307 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 6308 | |
a14ed312 | 6309 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 6310 | |
a14ed312 | 6311 | static void threadalive_test (char *cmd, int tty); |
c906108c | 6312 | |
a14ed312 | 6313 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 6314 | |
23860348 | 6315 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 6316 | |
a14ed312 | 6317 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 6318 | |
23860348 | 6319 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 6320 | |
a14ed312 | 6321 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 6322 | |
a14ed312 | 6323 | static void init_remote_threadtests (void); |
c906108c | 6324 | |
23860348 | 6325 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
6326 | |
6327 | static void | |
fba45db2 | 6328 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
6329 | { |
6330 | int sample_thread = SAMPLE_THREAD; | |
6331 | ||
a3f17187 | 6332 | printf_filtered (_("Remote threadset test\n")); |
c906108c SS |
6333 | set_thread (sample_thread, 1); |
6334 | } | |
6335 | ||
6336 | ||
6337 | static void | |
fba45db2 | 6338 | threadalive_test (char *cmd, int tty) |
c906108c SS |
6339 | { |
6340 | int sample_thread = SAMPLE_THREAD; | |
6341 | ||
39f77062 | 6342 | if (remote_thread_alive (pid_to_ptid (sample_thread))) |
c906108c SS |
6343 | printf_filtered ("PASS: Thread alive test\n"); |
6344 | else | |
6345 | printf_filtered ("FAIL: Thread alive test\n"); | |
6346 | } | |
6347 | ||
23860348 | 6348 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
6349 | |
6350 | void | |
fba45db2 | 6351 | output_threadid (char *title, threadref *ref) |
c906108c SS |
6352 | { |
6353 | char hexid[20]; | |
6354 | ||
23860348 | 6355 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
6356 | hexid[16] = 0; |
6357 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
6358 | } | |
6359 | ||
6360 | static void | |
fba45db2 | 6361 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
6362 | { |
6363 | int startflag = 1; | |
6364 | threadref nextthread; | |
6365 | int done, result_count; | |
6366 | threadref threadlist[3]; | |
6367 | ||
6368 | printf_filtered ("Remote Threadlist test\n"); | |
6369 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
6370 | &result_count, &threadlist[0])) | |
6371 | printf_filtered ("FAIL: threadlist test\n"); | |
6372 | else | |
6373 | { | |
6374 | threadref *scan = threadlist; | |
6375 | threadref *limit = scan + result_count; | |
6376 | ||
6377 | while (scan < limit) | |
6378 | output_threadid (" thread ", scan++); | |
6379 | } | |
6380 | } | |
6381 | ||
6382 | void | |
fba45db2 | 6383 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
6384 | { |
6385 | output_threadid ("Threadid: ", &info->threadid); | |
6386 | printf_filtered ("Name: %s\n ", info->shortname); | |
6387 | printf_filtered ("State: %s\n", info->display); | |
6388 | printf_filtered ("other: %s\n\n", info->more_display); | |
6389 | } | |
6390 | ||
6391 | int | |
fba45db2 | 6392 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
6393 | { |
6394 | int result; | |
6395 | int set; | |
6396 | struct gdb_ext_thread_info threadinfo; | |
6397 | ||
6398 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
6399 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
6400 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
6401 | display_thread_info (&threadinfo); | |
6402 | return result; | |
6403 | } | |
6404 | ||
6405 | static void | |
fba45db2 | 6406 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
6407 | { |
6408 | int athread = SAMPLE_THREAD; | |
6409 | threadref thread; | |
6410 | int set; | |
6411 | ||
6412 | int_to_threadref (&thread, athread); | |
6413 | printf_filtered ("Remote Threadinfo test\n"); | |
6414 | if (!get_and_display_threadinfo (&thread)) | |
6415 | printf_filtered ("FAIL cannot get thread info\n"); | |
6416 | } | |
6417 | ||
6418 | static int | |
fba45db2 | 6419 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
6420 | { |
6421 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
6422 | return get_and_display_threadinfo (ref); | |
6423 | } | |
6424 | ||
6425 | static void | |
fba45db2 | 6426 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
6427 | { |
6428 | printf_filtered ("Remote Threadlist update test\n"); | |
6429 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
6430 | } | |
6431 | ||
6432 | static void | |
6433 | init_remote_threadtests (void) | |
6434 | { | |
1bedd215 AC |
6435 | add_com ("tlist", class_obscure, threadlist_test_cmd, _("\ |
6436 | Fetch and print the remote list of thread identifiers, one pkt only")); | |
c906108c | 6437 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 6438 | _("Fetch and display info about one thread")); |
c906108c | 6439 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 6440 | _("Test setting to a different thread")); |
c906108c | 6441 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 6442 | _("Iterate through updating all remote thread info")); |
c906108c | 6443 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 6444 | _(" Remote thread alive test ")); |
c906108c SS |
6445 | } |
6446 | ||
6447 | #endif /* 0 */ | |
6448 | ||
f3fb8c85 MS |
6449 | /* Convert a thread ID to a string. Returns the string in a static |
6450 | buffer. */ | |
6451 | ||
6452 | static char * | |
39f77062 | 6453 | remote_pid_to_str (ptid_t ptid) |
f3fb8c85 | 6454 | { |
fd0a2a6f | 6455 | static char buf[32]; |
f3fb8c85 | 6456 | |
32a5b2f1 | 6457 | xsnprintf (buf, sizeof buf, "Thread %d", ptid_get_pid (ptid)); |
f3fb8c85 MS |
6458 | return buf; |
6459 | } | |
6460 | ||
38691318 KB |
6461 | /* Get the address of the thread local variable in OBJFILE which is |
6462 | stored at OFFSET within the thread local storage for thread PTID. */ | |
6463 | ||
6464 | static CORE_ADDR | |
6465 | remote_get_thread_local_address (ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
6466 | { | |
444abaca | 6467 | if (remote_protocol_packets[PACKET_qGetTLSAddr].support != PACKET_DISABLE) |
38691318 KB |
6468 | { |
6469 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 6470 | char *p = rs->buf; |
571dd617 | 6471 | enum packet_result result; |
38691318 KB |
6472 | |
6473 | strcpy (p, "qGetTLSAddr:"); | |
6474 | p += strlen (p); | |
6475 | p += hexnumstr (p, PIDGET (ptid)); | |
6476 | *p++ = ','; | |
6477 | p += hexnumstr (p, offset); | |
6478 | *p++ = ','; | |
6479 | p += hexnumstr (p, lm); | |
6480 | *p++ = '\0'; | |
6481 | ||
6d820c5c DJ |
6482 | putpkt (rs->buf); |
6483 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6484 | result = packet_ok (rs->buf, &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 6485 | if (result == PACKET_OK) |
38691318 KB |
6486 | { |
6487 | ULONGEST result; | |
6488 | ||
6d820c5c | 6489 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
6490 | return result; |
6491 | } | |
571dd617 | 6492 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
6493 | throw_error (TLS_GENERIC_ERROR, |
6494 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 6495 | else |
109c3e39 AC |
6496 | throw_error (TLS_GENERIC_ERROR, |
6497 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
6498 | } |
6499 | else | |
109c3e39 AC |
6500 | throw_error (TLS_GENERIC_ERROR, |
6501 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
6502 | /* Not reached. */ |
6503 | return 0; | |
6504 | } | |
6505 | ||
29709017 DJ |
6506 | /* Support for inferring a target description based on the current |
6507 | architecture and the size of a 'g' packet. While the 'g' packet | |
6508 | can have any size (since optional registers can be left off the | |
6509 | end), some sizes are easily recognizable given knowledge of the | |
6510 | approximate architecture. */ | |
6511 | ||
6512 | struct remote_g_packet_guess | |
6513 | { | |
6514 | int bytes; | |
6515 | const struct target_desc *tdesc; | |
6516 | }; | |
6517 | typedef struct remote_g_packet_guess remote_g_packet_guess_s; | |
6518 | DEF_VEC_O(remote_g_packet_guess_s); | |
6519 | ||
6520 | struct remote_g_packet_data | |
6521 | { | |
6522 | VEC(remote_g_packet_guess_s) *guesses; | |
6523 | }; | |
6524 | ||
6525 | static struct gdbarch_data *remote_g_packet_data_handle; | |
6526 | ||
6527 | static void * | |
6528 | remote_g_packet_data_init (struct obstack *obstack) | |
6529 | { | |
6530 | return OBSTACK_ZALLOC (obstack, struct remote_g_packet_data); | |
6531 | } | |
6532 | ||
6533 | void | |
6534 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
6535 | const struct target_desc *tdesc) | |
6536 | { | |
6537 | struct remote_g_packet_data *data | |
6538 | = gdbarch_data (gdbarch, remote_g_packet_data_handle); | |
6539 | struct remote_g_packet_guess new_guess, *guess; | |
6540 | int ix; | |
6541 | ||
6542 | gdb_assert (tdesc != NULL); | |
6543 | ||
6544 | for (ix = 0; | |
6545 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
6546 | ix++) | |
6547 | if (guess->bytes == bytes) | |
6548 | internal_error (__FILE__, __LINE__, | |
6549 | "Duplicate g packet description added for size %d", | |
6550 | bytes); | |
6551 | ||
6552 | new_guess.bytes = bytes; | |
6553 | new_guess.tdesc = tdesc; | |
6554 | VEC_safe_push (remote_g_packet_guess_s, data->guesses, &new_guess); | |
6555 | } | |
6556 | ||
6557 | static const struct target_desc * | |
6558 | remote_read_description (struct target_ops *target) | |
6559 | { | |
6560 | struct remote_g_packet_data *data | |
6561 | = gdbarch_data (current_gdbarch, remote_g_packet_data_handle); | |
6562 | ||
6563 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) | |
6564 | { | |
6565 | struct remote_g_packet_guess *guess; | |
6566 | int ix; | |
6567 | int bytes = send_g_packet (); | |
6568 | ||
6569 | for (ix = 0; | |
6570 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
6571 | ix++) | |
6572 | if (guess->bytes == bytes) | |
6573 | return guess->tdesc; | |
6574 | ||
6575 | /* We discard the g packet. A minor optimization would be to | |
6576 | hold on to it, and fill the register cache once we have selected | |
6577 | an architecture, but it's too tricky to do safely. */ | |
6578 | } | |
6579 | ||
6580 | return NULL; | |
6581 | } | |
6582 | ||
a6b151f1 DJ |
6583 | /* Remote file transfer support. This is host-initiated I/O, not |
6584 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
6585 | ||
6586 | /* If *LEFT is at least the length of STRING, copy STRING to | |
6587 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
6588 | decrease *LEFT. Otherwise raise an error. */ | |
6589 | ||
6590 | static void | |
6591 | remote_buffer_add_string (char **buffer, int *left, char *string) | |
6592 | { | |
6593 | int len = strlen (string); | |
6594 | ||
6595 | if (len > *left) | |
6596 | error (_("Packet too long for target.")); | |
6597 | ||
6598 | memcpy (*buffer, string, len); | |
6599 | *buffer += len; | |
6600 | *left -= len; | |
6601 | ||
6602 | /* NUL-terminate the buffer as a convenience, if there is | |
6603 | room. */ | |
6604 | if (*left) | |
6605 | **buffer = '\0'; | |
6606 | } | |
6607 | ||
6608 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
6609 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
6610 | decrease *LEFT. Otherwise raise an error. */ | |
6611 | ||
6612 | static void | |
6613 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
6614 | int len) | |
6615 | { | |
6616 | if (2 * len > *left) | |
6617 | error (_("Packet too long for target.")); | |
6618 | ||
6619 | bin2hex (bytes, *buffer, len); | |
6620 | *buffer += 2 * len; | |
6621 | *left -= 2 * len; | |
6622 | ||
6623 | /* NUL-terminate the buffer as a convenience, if there is | |
6624 | room. */ | |
6625 | if (*left) | |
6626 | **buffer = '\0'; | |
6627 | } | |
6628 | ||
6629 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
6630 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
6631 | decrease *LEFT. Otherwise raise an error. */ | |
6632 | ||
6633 | static void | |
6634 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
6635 | { | |
6636 | int len = hexnumlen (value); | |
6637 | ||
6638 | if (len > *left) | |
6639 | error (_("Packet too long for target.")); | |
6640 | ||
6641 | hexnumstr (*buffer, value); | |
6642 | *buffer += len; | |
6643 | *left -= len; | |
6644 | ||
6645 | /* NUL-terminate the buffer as a convenience, if there is | |
6646 | room. */ | |
6647 | if (*left) | |
6648 | **buffer = '\0'; | |
6649 | } | |
6650 | ||
6651 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
6652 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
6653 | was included, and *ATTACHMENT to point to the start of the annex | |
6654 | if any. The length of the packet isn't needed here; there may | |
6655 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
6656 | ||
6657 | Return 0 if the packet could be parsed, -1 if it could not. If | |
6658 | -1 is returned, the other variables may not be initialized. */ | |
6659 | ||
6660 | static int | |
6661 | remote_hostio_parse_result (char *buffer, int *retcode, | |
6662 | int *remote_errno, char **attachment) | |
6663 | { | |
6664 | char *p, *p2; | |
6665 | ||
6666 | *remote_errno = 0; | |
6667 | *attachment = NULL; | |
6668 | ||
6669 | if (buffer[0] != 'F') | |
6670 | return -1; | |
6671 | ||
6672 | errno = 0; | |
6673 | *retcode = strtol (&buffer[1], &p, 16); | |
6674 | if (errno != 0 || p == &buffer[1]) | |
6675 | return -1; | |
6676 | ||
6677 | /* Check for ",errno". */ | |
6678 | if (*p == ',') | |
6679 | { | |
6680 | errno = 0; | |
6681 | *remote_errno = strtol (p + 1, &p2, 16); | |
6682 | if (errno != 0 || p + 1 == p2) | |
6683 | return -1; | |
6684 | p = p2; | |
6685 | } | |
6686 | ||
6687 | /* Check for ";attachment". If there is no attachment, the | |
6688 | packet should end here. */ | |
6689 | if (*p == ';') | |
6690 | { | |
6691 | *attachment = p + 1; | |
6692 | return 0; | |
6693 | } | |
6694 | else if (*p == '\0') | |
6695 | return 0; | |
6696 | else | |
6697 | return -1; | |
6698 | } | |
6699 | ||
6700 | /* Send a prepared I/O packet to the target and read its response. | |
6701 | The prepared packet is in the global RS->BUF before this function | |
6702 | is called, and the answer is there when we return. | |
6703 | ||
6704 | COMMAND_BYTES is the length of the request to send, which may include | |
6705 | binary data. WHICH_PACKET is the packet configuration to check | |
6706 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
6707 | is set to the error number and -1 is returned. Otherwise the value | |
6708 | returned by the function is returned. | |
6709 | ||
6710 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
6711 | attachment is expected; an error will be reported if there's a | |
6712 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
6713 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
6714 | attachment's length. */ | |
6715 | ||
6716 | static int | |
6717 | remote_hostio_send_command (int command_bytes, int which_packet, | |
6718 | int *remote_errno, char **attachment, | |
6719 | int *attachment_len) | |
6720 | { | |
6721 | struct remote_state *rs = get_remote_state (); | |
6722 | int ret, bytes_read; | |
6723 | char *attachment_tmp; | |
6724 | ||
6725 | if (remote_protocol_packets[which_packet].support == PACKET_DISABLE) | |
6726 | { | |
6727 | *remote_errno = FILEIO_ENOSYS; | |
6728 | return -1; | |
6729 | } | |
6730 | ||
6731 | putpkt_binary (rs->buf, command_bytes); | |
6732 | bytes_read = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
6733 | ||
6734 | /* If it timed out, something is wrong. Don't try to parse the | |
6735 | buffer. */ | |
6736 | if (bytes_read < 0) | |
6737 | { | |
6738 | *remote_errno = FILEIO_EINVAL; | |
6739 | return -1; | |
6740 | } | |
6741 | ||
6742 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
6743 | { | |
6744 | case PACKET_ERROR: | |
6745 | *remote_errno = FILEIO_EINVAL; | |
6746 | return -1; | |
6747 | case PACKET_UNKNOWN: | |
6748 | *remote_errno = FILEIO_ENOSYS; | |
6749 | return -1; | |
6750 | case PACKET_OK: | |
6751 | break; | |
6752 | } | |
6753 | ||
6754 | if (remote_hostio_parse_result (rs->buf, &ret, remote_errno, | |
6755 | &attachment_tmp)) | |
6756 | { | |
6757 | *remote_errno = FILEIO_EINVAL; | |
6758 | return -1; | |
6759 | } | |
6760 | ||
6761 | /* Make sure we saw an attachment if and only if we expected one. */ | |
6762 | if ((attachment_tmp == NULL && attachment != NULL) | |
6763 | || (attachment_tmp != NULL && attachment == NULL)) | |
6764 | { | |
6765 | *remote_errno = FILEIO_EINVAL; | |
6766 | return -1; | |
6767 | } | |
6768 | ||
6769 | /* If an attachment was found, it must point into the packet buffer; | |
6770 | work out how many bytes there were. */ | |
6771 | if (attachment_tmp != NULL) | |
6772 | { | |
6773 | *attachment = attachment_tmp; | |
6774 | *attachment_len = bytes_read - (*attachment - rs->buf); | |
6775 | } | |
6776 | ||
6777 | return ret; | |
6778 | } | |
6779 | ||
6780 | /* Open FILENAME on the remote target, using FLAGS and MODE. Return a | |
6781 | remote file descriptor, or -1 if an error occurs (and set | |
6782 | *REMOTE_ERRNO). */ | |
6783 | ||
6784 | static int | |
6785 | remote_hostio_open (const char *filename, int flags, int mode, | |
6786 | int *remote_errno) | |
6787 | { | |
6788 | struct remote_state *rs = get_remote_state (); | |
6789 | char *p = rs->buf; | |
6790 | int left = get_remote_packet_size () - 1; | |
6791 | ||
6792 | remote_buffer_add_string (&p, &left, "vFile:open:"); | |
6793 | ||
6794 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
6795 | strlen (filename)); | |
6796 | remote_buffer_add_string (&p, &left, ","); | |
6797 | ||
6798 | remote_buffer_add_int (&p, &left, flags); | |
6799 | remote_buffer_add_string (&p, &left, ","); | |
6800 | ||
6801 | remote_buffer_add_int (&p, &left, mode); | |
6802 | ||
6803 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_open, | |
6804 | remote_errno, NULL, NULL); | |
6805 | } | |
6806 | ||
6807 | /* Write up to LEN bytes from WRITE_BUF to FD on the remote target. | |
6808 | Return the number of bytes written, or -1 if an error occurs (and | |
6809 | set *REMOTE_ERRNO). */ | |
6810 | ||
6811 | static int | |
6812 | remote_hostio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
6813 | ULONGEST offset, int *remote_errno) | |
6814 | { | |
6815 | struct remote_state *rs = get_remote_state (); | |
6816 | char *p = rs->buf; | |
6817 | int left = get_remote_packet_size (); | |
6818 | int out_len; | |
6819 | ||
6820 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); | |
6821 | ||
6822 | remote_buffer_add_int (&p, &left, fd); | |
6823 | remote_buffer_add_string (&p, &left, ","); | |
6824 | ||
6825 | remote_buffer_add_int (&p, &left, offset); | |
6826 | remote_buffer_add_string (&p, &left, ","); | |
6827 | ||
6828 | p += remote_escape_output (write_buf, len, p, &out_len, | |
6829 | get_remote_packet_size () - (p - rs->buf)); | |
6830 | ||
6831 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_pwrite, | |
6832 | remote_errno, NULL, NULL); | |
6833 | } | |
6834 | ||
6835 | /* Read up to LEN bytes FD on the remote target into READ_BUF | |
6836 | Return the number of bytes read, or -1 if an error occurs (and | |
6837 | set *REMOTE_ERRNO). */ | |
6838 | ||
6839 | static int | |
6840 | remote_hostio_pread (int fd, gdb_byte *read_buf, int len, | |
6841 | ULONGEST offset, int *remote_errno) | |
6842 | { | |
6843 | struct remote_state *rs = get_remote_state (); | |
6844 | char *p = rs->buf; | |
6845 | char *attachment; | |
6846 | int left = get_remote_packet_size (); | |
6847 | int ret, attachment_len; | |
6848 | int read_len; | |
6849 | ||
6850 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
6851 | ||
6852 | remote_buffer_add_int (&p, &left, fd); | |
6853 | remote_buffer_add_string (&p, &left, ","); | |
6854 | ||
6855 | remote_buffer_add_int (&p, &left, len); | |
6856 | remote_buffer_add_string (&p, &left, ","); | |
6857 | ||
6858 | remote_buffer_add_int (&p, &left, offset); | |
6859 | ||
6860 | ret = remote_hostio_send_command (p - rs->buf, PACKET_vFile_pread, | |
6861 | remote_errno, &attachment, | |
6862 | &attachment_len); | |
6863 | ||
6864 | if (ret < 0) | |
6865 | return ret; | |
6866 | ||
6867 | read_len = remote_unescape_input (attachment, attachment_len, | |
6868 | read_buf, len); | |
6869 | if (read_len != ret) | |
6870 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
6871 | ||
6872 | return ret; | |
6873 | } | |
6874 | ||
6875 | /* Close FD on the remote target. Return 0, or -1 if an error occurs | |
6876 | (and set *REMOTE_ERRNO). */ | |
6877 | ||
6878 | static int | |
6879 | remote_hostio_close (int fd, int *remote_errno) | |
6880 | { | |
6881 | struct remote_state *rs = get_remote_state (); | |
6882 | char *p = rs->buf; | |
6883 | int left = get_remote_packet_size () - 1; | |
6884 | ||
6885 | remote_buffer_add_string (&p, &left, "vFile:close:"); | |
6886 | ||
6887 | remote_buffer_add_int (&p, &left, fd); | |
6888 | ||
6889 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_close, | |
6890 | remote_errno, NULL, NULL); | |
6891 | } | |
6892 | ||
6893 | /* Unlink FILENAME on the remote target. Return 0, or -1 if an error | |
6894 | occurs (and set *REMOTE_ERRNO). */ | |
6895 | ||
6896 | static int | |
6897 | remote_hostio_unlink (const char *filename, int *remote_errno) | |
6898 | { | |
6899 | struct remote_state *rs = get_remote_state (); | |
6900 | char *p = rs->buf; | |
6901 | int left = get_remote_packet_size () - 1; | |
6902 | ||
6903 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); | |
6904 | ||
6905 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
6906 | strlen (filename)); | |
6907 | ||
6908 | return remote_hostio_send_command (p - rs->buf, PACKET_vFile_unlink, | |
6909 | remote_errno, NULL, NULL); | |
6910 | } | |
6911 | ||
6912 | static int | |
6913 | remote_fileio_errno_to_host (int errnum) | |
6914 | { | |
6915 | switch (errnum) | |
6916 | { | |
6917 | case FILEIO_EPERM: | |
6918 | return EPERM; | |
6919 | case FILEIO_ENOENT: | |
6920 | return ENOENT; | |
6921 | case FILEIO_EINTR: | |
6922 | return EINTR; | |
6923 | case FILEIO_EIO: | |
6924 | return EIO; | |
6925 | case FILEIO_EBADF: | |
6926 | return EBADF; | |
6927 | case FILEIO_EACCES: | |
6928 | return EACCES; | |
6929 | case FILEIO_EFAULT: | |
6930 | return EFAULT; | |
6931 | case FILEIO_EBUSY: | |
6932 | return EBUSY; | |
6933 | case FILEIO_EEXIST: | |
6934 | return EEXIST; | |
6935 | case FILEIO_ENODEV: | |
6936 | return ENODEV; | |
6937 | case FILEIO_ENOTDIR: | |
6938 | return ENOTDIR; | |
6939 | case FILEIO_EISDIR: | |
6940 | return EISDIR; | |
6941 | case FILEIO_EINVAL: | |
6942 | return EINVAL; | |
6943 | case FILEIO_ENFILE: | |
6944 | return ENFILE; | |
6945 | case FILEIO_EMFILE: | |
6946 | return EMFILE; | |
6947 | case FILEIO_EFBIG: | |
6948 | return EFBIG; | |
6949 | case FILEIO_ENOSPC: | |
6950 | return ENOSPC; | |
6951 | case FILEIO_ESPIPE: | |
6952 | return ESPIPE; | |
6953 | case FILEIO_EROFS: | |
6954 | return EROFS; | |
6955 | case FILEIO_ENOSYS: | |
6956 | return ENOSYS; | |
6957 | case FILEIO_ENAMETOOLONG: | |
6958 | return ENAMETOOLONG; | |
6959 | } | |
6960 | return -1; | |
6961 | } | |
6962 | ||
6963 | static char * | |
6964 | remote_hostio_error (int errnum) | |
6965 | { | |
6966 | int host_error = remote_fileio_errno_to_host (errnum); | |
6967 | ||
6968 | if (host_error == -1) | |
6969 | error (_("Unknown remote I/O error %d"), errnum); | |
6970 | else | |
6971 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
6972 | } | |
6973 | ||
6974 | static void | |
6975 | fclose_cleanup (void *file) | |
6976 | { | |
6977 | fclose (file); | |
6978 | } | |
6979 | ||
6980 | static void | |
6981 | remote_hostio_close_cleanup (void *opaque) | |
6982 | { | |
6983 | int fd = *(int *) opaque; | |
6984 | int remote_errno; | |
6985 | ||
6986 | remote_hostio_close (fd, &remote_errno); | |
6987 | } | |
6988 | ||
6989 | void | |
6990 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
6991 | { | |
6992 | struct cleanup *back_to, *close_cleanup; | |
6993 | int retcode, fd, remote_errno, bytes, io_size; | |
6994 | FILE *file; | |
6995 | gdb_byte *buffer; | |
6996 | int bytes_in_buffer; | |
6997 | int saw_eof; | |
6998 | ULONGEST offset; | |
6999 | ||
7000 | if (!remote_desc) | |
7001 | error (_("command can only be used with remote target")); | |
7002 | ||
7003 | file = fopen (local_file, "rb"); | |
7004 | if (file == NULL) | |
7005 | perror_with_name (local_file); | |
7006 | back_to = make_cleanup (fclose_cleanup, file); | |
7007 | ||
7008 | fd = remote_hostio_open (remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT | |
7009 | | FILEIO_O_TRUNC), | |
7010 | 0700, &remote_errno); | |
7011 | if (fd == -1) | |
7012 | remote_hostio_error (remote_errno); | |
7013 | ||
7014 | /* Send up to this many bytes at once. They won't all fit in the | |
7015 | remote packet limit, so we'll transfer slightly fewer. */ | |
7016 | io_size = get_remote_packet_size (); | |
7017 | buffer = xmalloc (io_size); | |
7018 | make_cleanup (xfree, buffer); | |
7019 | ||
7020 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
7021 | ||
7022 | bytes_in_buffer = 0; | |
7023 | saw_eof = 0; | |
7024 | offset = 0; | |
7025 | while (bytes_in_buffer || !saw_eof) | |
7026 | { | |
7027 | if (!saw_eof) | |
7028 | { | |
7029 | bytes = fread (buffer + bytes_in_buffer, 1, io_size - bytes_in_buffer, | |
7030 | file); | |
7031 | if (bytes == 0) | |
7032 | { | |
7033 | if (ferror (file)) | |
7034 | error (_("Error reading %s."), local_file); | |
7035 | else | |
7036 | { | |
7037 | /* EOF. Unless there is something still in the | |
7038 | buffer from the last iteration, we are done. */ | |
7039 | saw_eof = 1; | |
7040 | if (bytes_in_buffer == 0) | |
7041 | break; | |
7042 | } | |
7043 | } | |
7044 | } | |
7045 | else | |
7046 | bytes = 0; | |
7047 | ||
7048 | bytes += bytes_in_buffer; | |
7049 | bytes_in_buffer = 0; | |
7050 | ||
7051 | retcode = remote_hostio_pwrite (fd, buffer, bytes, offset, &remote_errno); | |
7052 | ||
7053 | if (retcode < 0) | |
7054 | remote_hostio_error (remote_errno); | |
7055 | else if (retcode == 0) | |
7056 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
7057 | else if (retcode < bytes) | |
7058 | { | |
7059 | /* Short write. Save the rest of the read data for the next | |
7060 | write. */ | |
7061 | bytes_in_buffer = bytes - retcode; | |
7062 | memmove (buffer, buffer + retcode, bytes_in_buffer); | |
7063 | } | |
7064 | ||
7065 | offset += retcode; | |
7066 | } | |
7067 | ||
7068 | discard_cleanups (close_cleanup); | |
7069 | if (remote_hostio_close (fd, &remote_errno)) | |
7070 | remote_hostio_error (remote_errno); | |
7071 | ||
7072 | if (from_tty) | |
7073 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
7074 | do_cleanups (back_to); | |
7075 | } | |
7076 | ||
7077 | void | |
7078 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
7079 | { | |
7080 | struct cleanup *back_to, *close_cleanup; | |
7081 | int retcode, fd, remote_errno, bytes, io_size; | |
7082 | FILE *file; | |
7083 | gdb_byte *buffer; | |
7084 | ULONGEST offset; | |
7085 | ||
7086 | if (!remote_desc) | |
7087 | error (_("command can only be used with remote target")); | |
7088 | ||
7089 | fd = remote_hostio_open (remote_file, FILEIO_O_RDONLY, 0, &remote_errno); | |
7090 | if (fd == -1) | |
7091 | remote_hostio_error (remote_errno); | |
7092 | ||
7093 | file = fopen (local_file, "wb"); | |
7094 | if (file == NULL) | |
7095 | perror_with_name (local_file); | |
7096 | back_to = make_cleanup (fclose_cleanup, file); | |
7097 | ||
7098 | /* Send up to this many bytes at once. They won't all fit in the | |
7099 | remote packet limit, so we'll transfer slightly fewer. */ | |
7100 | io_size = get_remote_packet_size (); | |
7101 | buffer = xmalloc (io_size); | |
7102 | make_cleanup (xfree, buffer); | |
7103 | ||
7104 | close_cleanup = make_cleanup (remote_hostio_close_cleanup, &fd); | |
7105 | ||
7106 | offset = 0; | |
7107 | while (1) | |
7108 | { | |
7109 | bytes = remote_hostio_pread (fd, buffer, io_size, offset, &remote_errno); | |
7110 | if (bytes == 0) | |
7111 | /* Success, but no bytes, means end-of-file. */ | |
7112 | break; | |
7113 | if (bytes == -1) | |
7114 | remote_hostio_error (remote_errno); | |
7115 | ||
7116 | offset += bytes; | |
7117 | ||
7118 | bytes = fwrite (buffer, 1, bytes, file); | |
7119 | if (bytes == 0) | |
7120 | perror_with_name (local_file); | |
7121 | } | |
7122 | ||
7123 | discard_cleanups (close_cleanup); | |
7124 | if (remote_hostio_close (fd, &remote_errno)) | |
7125 | remote_hostio_error (remote_errno); | |
7126 | ||
7127 | if (from_tty) | |
7128 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
7129 | do_cleanups (back_to); | |
7130 | } | |
7131 | ||
7132 | void | |
7133 | remote_file_delete (const char *remote_file, int from_tty) | |
7134 | { | |
7135 | int retcode, remote_errno; | |
7136 | ||
7137 | if (!remote_desc) | |
7138 | error (_("command can only be used with remote target")); | |
7139 | ||
7140 | retcode = remote_hostio_unlink (remote_file, &remote_errno); | |
7141 | if (retcode == -1) | |
7142 | remote_hostio_error (remote_errno); | |
7143 | ||
7144 | if (from_tty) | |
7145 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
7146 | } | |
7147 | ||
7148 | static void | |
7149 | remote_put_command (char *args, int from_tty) | |
7150 | { | |
7151 | struct cleanup *back_to; | |
7152 | char **argv; | |
7153 | ||
7154 | argv = buildargv (args); | |
7155 | if (argv == NULL) | |
7156 | nomem (0); | |
7157 | back_to = make_cleanup_freeargv (argv); | |
7158 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
7159 | error (_("Invalid parameters to remote put")); | |
7160 | ||
7161 | remote_file_put (argv[0], argv[1], from_tty); | |
7162 | ||
7163 | do_cleanups (back_to); | |
7164 | } | |
7165 | ||
7166 | static void | |
7167 | remote_get_command (char *args, int from_tty) | |
7168 | { | |
7169 | struct cleanup *back_to; | |
7170 | char **argv; | |
7171 | ||
7172 | argv = buildargv (args); | |
7173 | if (argv == NULL) | |
7174 | nomem (0); | |
7175 | back_to = make_cleanup_freeargv (argv); | |
7176 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) | |
7177 | error (_("Invalid parameters to remote get")); | |
7178 | ||
7179 | remote_file_get (argv[0], argv[1], from_tty); | |
7180 | ||
7181 | do_cleanups (back_to); | |
7182 | } | |
7183 | ||
7184 | static void | |
7185 | remote_delete_command (char *args, int from_tty) | |
7186 | { | |
7187 | struct cleanup *back_to; | |
7188 | char **argv; | |
7189 | ||
7190 | argv = buildargv (args); | |
7191 | if (argv == NULL) | |
7192 | nomem (0); | |
7193 | back_to = make_cleanup_freeargv (argv); | |
7194 | if (argv[0] == NULL || argv[1] != NULL) | |
7195 | error (_("Invalid parameters to remote delete")); | |
7196 | ||
7197 | remote_file_delete (argv[0], from_tty); | |
7198 | ||
7199 | do_cleanups (back_to); | |
7200 | } | |
7201 | ||
7202 | static void | |
7203 | remote_command (char *args, int from_tty) | |
7204 | { | |
7205 | help_list (remote_cmdlist, "remote ", -1, gdb_stdout); | |
7206 | } | |
7207 | ||
c906108c | 7208 | static void |
fba45db2 | 7209 | init_remote_ops (void) |
c906108c | 7210 | { |
c5aa993b | 7211 | remote_ops.to_shortname = "remote"; |
c906108c | 7212 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 7213 | remote_ops.to_doc = |
c906108c | 7214 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
7215 | Specify the serial device it is connected to\n\ |
7216 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
7217 | remote_ops.to_open = remote_open; |
7218 | remote_ops.to_close = remote_close; | |
c906108c | 7219 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 7220 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 7221 | remote_ops.to_resume = remote_resume; |
c906108c SS |
7222 | remote_ops.to_wait = remote_wait; |
7223 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
7224 | remote_ops.to_store_registers = remote_store_registers; | |
7225 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 7226 | remote_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 7227 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
7228 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
7229 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
7230 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
7231 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
7232 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; | |
7233 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
7234 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
7235 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
7236 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b JM |
7237 | remote_ops.to_kill = remote_kill; |
7238 | remote_ops.to_load = generic_load; | |
c906108c SS |
7239 | remote_ops.to_mourn_inferior = remote_mourn; |
7240 | remote_ops.to_thread_alive = remote_thread_alive; | |
0f71a2f6 | 7241 | remote_ops.to_find_new_threads = remote_threads_info; |
0caabb7e | 7242 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 7243 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
c906108c | 7244 | remote_ops.to_stop = remote_stop; |
4b8a223f | 7245 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 7246 | remote_ops.to_rcmd = remote_rcmd; |
49d03eab | 7247 | remote_ops.to_log_command = serial_log_command; |
38691318 | 7248 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; |
c906108c | 7249 | remote_ops.to_stratum = process_stratum; |
c5aa993b JM |
7250 | remote_ops.to_has_all_memory = 1; |
7251 | remote_ops.to_has_memory = 1; | |
7252 | remote_ops.to_has_stack = 1; | |
7253 | remote_ops.to_has_registers = 1; | |
7254 | remote_ops.to_has_execution = 1; | |
7255 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
7256 | remote_ops.to_magic = OPS_MAGIC; | |
fd79ecee | 7257 | remote_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
7258 | remote_ops.to_flash_erase = remote_flash_erase; |
7259 | remote_ops.to_flash_done = remote_flash_done; | |
29709017 | 7260 | remote_ops.to_read_description = remote_read_description; |
c906108c SS |
7261 | } |
7262 | ||
7263 | /* Set up the extended remote vector by making a copy of the standard | |
7264 | remote vector and adding to it. */ | |
7265 | ||
7266 | static void | |
fba45db2 | 7267 | init_extended_remote_ops (void) |
c906108c SS |
7268 | { |
7269 | extended_remote_ops = remote_ops; | |
7270 | ||
0f71a2f6 | 7271 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 7272 | extended_remote_ops.to_longname = |
c906108c | 7273 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 7274 | extended_remote_ops.to_doc = |
c906108c SS |
7275 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
7276 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 7277 | extended_remote_ops.to_open = extended_remote_open; |
c906108c SS |
7278 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
7279 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
2d717e4f DJ |
7280 | extended_remote_ops.to_detach = extended_remote_detach; |
7281 | extended_remote_ops.to_attach = extended_remote_attach; | |
0f71a2f6 JM |
7282 | } |
7283 | ||
6426a772 JM |
7284 | static int |
7285 | remote_can_async_p (void) | |
7286 | { | |
23860348 | 7287 | /* We're async whenever the serial device is. */ |
2cd58942 | 7288 | return (current_target.to_async_mask_value) && serial_can_async_p (remote_desc); |
6426a772 JM |
7289 | } |
7290 | ||
7291 | static int | |
7292 | remote_is_async_p (void) | |
7293 | { | |
23860348 | 7294 | /* We're async whenever the serial device is. */ |
2cd58942 | 7295 | return (current_target.to_async_mask_value) && serial_is_async_p (remote_desc); |
6426a772 JM |
7296 | } |
7297 | ||
2acceee2 JM |
7298 | /* Pass the SERIAL event on and up to the client. One day this code |
7299 | will be able to delay notifying the client of an event until the | |
23860348 | 7300 | point where an entire packet has been received. */ |
2acceee2 | 7301 | |
2bc416ba | 7302 | static void (*async_client_callback) (enum inferior_event_type event_type, |
23860348 | 7303 | void *context); |
2acceee2 JM |
7304 | static void *async_client_context; |
7305 | static serial_event_ftype remote_async_serial_handler; | |
7306 | ||
6426a772 | 7307 | static void |
819cc324 | 7308 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 7309 | { |
2acceee2 JM |
7310 | /* Don't propogate error information up to the client. Instead let |
7311 | the client find out about the error by querying the target. */ | |
7312 | async_client_callback (INF_REG_EVENT, async_client_context); | |
7313 | } | |
7314 | ||
7315 | static void | |
2bc416ba | 7316 | remote_async (void (*callback) (enum inferior_event_type event_type, |
23860348 | 7317 | void *context), void *context) |
2acceee2 | 7318 | { |
ed9a39eb | 7319 | if (current_target.to_async_mask_value == 0) |
8e65ff28 | 7320 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 7321 | _("Calling remote_async when async is masked")); |
ed9a39eb | 7322 | |
2acceee2 JM |
7323 | if (callback != NULL) |
7324 | { | |
2cd58942 | 7325 | serial_async (remote_desc, remote_async_serial_handler, NULL); |
2acceee2 JM |
7326 | async_client_callback = callback; |
7327 | async_client_context = context; | |
7328 | } | |
7329 | else | |
2cd58942 | 7330 | serial_async (remote_desc, NULL, NULL); |
6426a772 JM |
7331 | } |
7332 | ||
43ff13b4 JM |
7333 | /* Target async and target extended-async. |
7334 | ||
7335 | This are temporary targets, until it is all tested. Eventually | |
7336 | async support will be incorporated int the usual 'remote' | |
23860348 | 7337 | target. */ |
43ff13b4 JM |
7338 | |
7339 | static void | |
c2d11a7d | 7340 | init_remote_async_ops (void) |
43ff13b4 JM |
7341 | { |
7342 | remote_async_ops.to_shortname = "async"; | |
2bc416ba | 7343 | remote_async_ops.to_longname = |
23860348 | 7344 | "Remote serial target in async version of the gdb-specific protocol"; |
c5aa993b | 7345 | remote_async_ops.to_doc = |
43ff13b4 JM |
7346 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
7347 | Specify the serial device it is connected to (e.g. /dev/ttya)."; | |
c5aa993b JM |
7348 | remote_async_ops.to_open = remote_async_open; |
7349 | remote_async_ops.to_close = remote_close; | |
6ad8ae5c DJ |
7350 | remote_async_ops.to_detach = remote_detach; |
7351 | remote_async_ops.to_disconnect = remote_disconnect; | |
c5aa993b JM |
7352 | remote_async_ops.to_resume = remote_async_resume; |
7353 | remote_async_ops.to_wait = remote_async_wait; | |
7354 | remote_async_ops.to_fetch_registers = remote_fetch_registers; | |
7355 | remote_async_ops.to_store_registers = remote_store_registers; | |
7356 | remote_async_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 7357 | remote_async_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 7358 | remote_async_ops.to_files_info = remote_files_info; |
43ff13b4 JM |
7359 | remote_async_ops.to_insert_breakpoint = remote_insert_breakpoint; |
7360 | remote_async_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
7361 | remote_async_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
7362 | remote_async_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
7363 | remote_async_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
7364 | remote_async_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
7365 | remote_async_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
7366 | remote_async_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; | |
7367 | remote_async_ops.to_stopped_data_address = remote_stopped_data_address; | |
6426a772 JM |
7368 | remote_async_ops.to_terminal_inferior = remote_async_terminal_inferior; |
7369 | remote_async_ops.to_terminal_ours = remote_async_terminal_ours; | |
c5aa993b JM |
7370 | remote_async_ops.to_kill = remote_async_kill; |
7371 | remote_async_ops.to_load = generic_load; | |
53a5351d | 7372 | remote_async_ops.to_mourn_inferior = remote_async_mourn; |
c5aa993b JM |
7373 | remote_async_ops.to_thread_alive = remote_thread_alive; |
7374 | remote_async_ops.to_find_new_threads = remote_threads_info; | |
cf759d3b ND |
7375 | remote_async_ops.to_pid_to_str = remote_pid_to_str; |
7376 | remote_async_ops.to_extra_thread_info = remote_threads_extra_info; | |
43ff13b4 | 7377 | remote_async_ops.to_stop = remote_stop; |
4b8a223f | 7378 | remote_async_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 7379 | remote_async_ops.to_rcmd = remote_rcmd; |
c5aa993b JM |
7380 | remote_async_ops.to_stratum = process_stratum; |
7381 | remote_async_ops.to_has_all_memory = 1; | |
7382 | remote_async_ops.to_has_memory = 1; | |
7383 | remote_async_ops.to_has_stack = 1; | |
7384 | remote_async_ops.to_has_registers = 1; | |
7385 | remote_async_ops.to_has_execution = 1; | |
7386 | remote_async_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
6426a772 JM |
7387 | remote_async_ops.to_can_async_p = remote_can_async_p; |
7388 | remote_async_ops.to_is_async_p = remote_is_async_p; | |
7389 | remote_async_ops.to_async = remote_async; | |
ed9a39eb | 7390 | remote_async_ops.to_async_mask_value = 1; |
c5aa993b | 7391 | remote_async_ops.to_magic = OPS_MAGIC; |
fd79ecee | 7392 | remote_async_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
7393 | remote_async_ops.to_flash_erase = remote_flash_erase; |
7394 | remote_async_ops.to_flash_done = remote_flash_done; | |
cfa9d6d9 | 7395 | remote_async_ops.to_read_description = remote_read_description; |
43ff13b4 JM |
7396 | } |
7397 | ||
7398 | /* Set up the async extended remote vector by making a copy of the standard | |
7399 | remote vector and adding to it. */ | |
7400 | ||
7401 | static void | |
c2d11a7d | 7402 | init_extended_async_remote_ops (void) |
43ff13b4 JM |
7403 | { |
7404 | extended_async_remote_ops = remote_async_ops; | |
7405 | ||
7406 | extended_async_remote_ops.to_shortname = "extended-async"; | |
c5aa993b | 7407 | extended_async_remote_ops.to_longname = |
43ff13b4 | 7408 | "Extended remote serial target in async gdb-specific protocol"; |
c5aa993b | 7409 | extended_async_remote_ops.to_doc = |
43ff13b4 JM |
7410 | "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\ |
7411 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 7412 | extended_async_remote_ops.to_open = extended_remote_async_open; |
43ff13b4 | 7413 | extended_async_remote_ops.to_create_inferior = extended_remote_async_create_inferior; |
2d717e4f DJ |
7414 | extended_async_remote_ops.to_mourn_inferior = extended_async_remote_mourn; |
7415 | extended_async_remote_ops.to_detach = extended_remote_detach; | |
7416 | extended_async_remote_ops.to_attach = extended_async_remote_attach; | |
43ff13b4 JM |
7417 | } |
7418 | ||
5a2468f5 | 7419 | static void |
c2d11a7d | 7420 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 7421 | { |
427c3a89 | 7422 | help_list (remote_set_cmdlist, "set remote ", -1, gdb_stdout); |
5a2468f5 JM |
7423 | } |
7424 | ||
d471ea57 AC |
7425 | static void |
7426 | show_remote_cmd (char *args, int from_tty) | |
7427 | { | |
37a105a1 | 7428 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 7429 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 DJ |
7430 | struct cleanup *showlist_chain; |
7431 | struct cmd_list_element *list = remote_show_cmdlist; | |
7432 | ||
7433 | showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist"); | |
7434 | for (; list != NULL; list = list->next) | |
7435 | if (strcmp (list->name, "Z-packet") == 0) | |
7436 | continue; | |
427c3a89 DJ |
7437 | else if (list->type == not_set_cmd) |
7438 | /* Alias commands are exactly like the original, except they | |
7439 | don't have the normal type. */ | |
7440 | continue; | |
7441 | else | |
37a105a1 DJ |
7442 | { |
7443 | struct cleanup *option_chain | |
7444 | = make_cleanup_ui_out_tuple_begin_end (uiout, "option"); | |
7445 | ui_out_field_string (uiout, "name", list->name); | |
7446 | ui_out_text (uiout, ": "); | |
427c3a89 DJ |
7447 | if (list->type == show_cmd) |
7448 | do_setshow_command ((char *) NULL, from_tty, list); | |
7449 | else | |
7450 | cmd_func (list, NULL, from_tty); | |
37a105a1 DJ |
7451 | /* Close the tuple. */ |
7452 | do_cleanups (option_chain); | |
7453 | } | |
427c3a89 DJ |
7454 | |
7455 | /* Close the tuple. */ | |
7456 | do_cleanups (showlist_chain); | |
d471ea57 | 7457 | } |
5a2468f5 | 7458 | |
0f71a2f6 | 7459 | |
23860348 | 7460 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
7461 | static void |
7462 | remote_new_objfile (struct objfile *objfile) | |
7463 | { | |
23860348 | 7464 | if (remote_desc != 0) /* Have a remote connection. */ |
06d3b283 | 7465 | remote_check_symbols (objfile); |
dc8acb97 MS |
7466 | } |
7467 | ||
c906108c | 7468 | void |
fba45db2 | 7469 | _initialize_remote (void) |
c906108c | 7470 | { |
ea9c271d DJ |
7471 | struct remote_state *rs; |
7472 | ||
0f71a2f6 | 7473 | /* architecture specific data */ |
2bc416ba | 7474 | remote_gdbarch_data_handle = |
23860348 | 7475 | gdbarch_data_register_post_init (init_remote_state); |
29709017 DJ |
7476 | remote_g_packet_data_handle = |
7477 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 7478 | |
ea9c271d DJ |
7479 | /* Initialize the per-target state. At the moment there is only one |
7480 | of these, not one per target. Only one target is active at a | |
7481 | time. The default buffer size is unimportant; it will be expanded | |
7482 | whenever a larger buffer is needed. */ | |
0b83947e | 7483 | rs = get_remote_state_raw (); |
ea9c271d DJ |
7484 | rs->buf_size = 400; |
7485 | rs->buf = xmalloc (rs->buf_size); | |
7486 | ||
c906108c SS |
7487 | init_remote_ops (); |
7488 | add_target (&remote_ops); | |
7489 | ||
7490 | init_extended_remote_ops (); | |
7491 | add_target (&extended_remote_ops); | |
cce74817 | 7492 | |
43ff13b4 JM |
7493 | init_remote_async_ops (); |
7494 | add_target (&remote_async_ops); | |
7495 | ||
7496 | init_extended_async_remote_ops (); | |
7497 | add_target (&extended_async_remote_ops); | |
7498 | ||
dc8acb97 | 7499 | /* Hook into new objfile notification. */ |
06d3b283 | 7500 | observer_attach_new_objfile (remote_new_objfile); |
dc8acb97 | 7501 | |
c906108c SS |
7502 | #if 0 |
7503 | init_remote_threadtests (); | |
7504 | #endif | |
7505 | ||
23860348 | 7506 | /* set/show remote ... */ |
d471ea57 | 7507 | |
1bedd215 | 7508 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
7509 | Remote protocol specific variables\n\ |
7510 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 7511 | the packets being used"), |
cff3e48b | 7512 | &remote_set_cmdlist, "set remote ", |
23860348 | 7513 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 7514 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
7515 | Remote protocol specific variables\n\ |
7516 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 7517 | the packets being used"), |
cff3e48b | 7518 | &remote_show_cmdlist, "show remote ", |
23860348 | 7519 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 7520 | |
1a966eab AC |
7521 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
7522 | Compare section data on target to the exec file.\n\ | |
7523 | Argument is a single section name (default: all loaded sections)."), | |
c906108c SS |
7524 | &cmdlist); |
7525 | ||
1a966eab AC |
7526 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
7527 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
7528 | maintenance packet TEXT\n\ |
7529 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
7530 | this command sends the string TEXT to the inferior, and displays the\n\ | |
7531 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 7532 | terminating `#' character and checksum."), |
c906108c SS |
7533 | &maintenancelist); |
7534 | ||
7915a72c AC |
7535 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
7536 | Set whether to send break if interrupted."), _("\ | |
7537 | Show whether to send break if interrupted."), _("\ | |
7538 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
2c5b56ce | 7539 | NULL, NULL, /* FIXME: i18n: Whether to send break if interrupted is %s. */ |
e707bbc2 | 7540 | &setlist, &showlist); |
c906108c | 7541 | |
23860348 | 7542 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 7543 | |
1a966eab AC |
7544 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
7545 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 7546 | &setlist); |
1a966eab AC |
7547 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
7548 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
7549 | &showlist); |
7550 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
7551 | set_memory_write_packet_size, _("\ |
7552 | Set the maximum number of bytes per memory-write packet.\n\ | |
7553 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
7554 | default packet size. The actual limit is further reduced\n\ | |
7555 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
7556 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
7557 | &remote_set_cmdlist); |
7558 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
7559 | set_memory_read_packet_size, _("\ |
7560 | Set the maximum number of bytes per memory-read packet.\n\ | |
7561 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
7562 | default packet size. The actual limit is further reduced\n\ | |
7563 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
7564 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
7565 | &remote_set_cmdlist); |
7566 | add_cmd ("memory-write-packet-size", no_class, | |
7567 | show_memory_write_packet_size, | |
1a966eab | 7568 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
7569 | &remote_show_cmdlist); |
7570 | add_cmd ("memory-read-packet-size", no_class, | |
7571 | show_memory_read_packet_size, | |
1a966eab | 7572 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 7573 | &remote_show_cmdlist); |
c906108c | 7574 | |
b3f42336 | 7575 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
7576 | &remote_hw_watchpoint_limit, _("\ |
7577 | Set the maximum number of target hardware watchpoints."), _("\ | |
7578 | Show the maximum number of target hardware watchpoints."), _("\ | |
7579 | Specify a negative limit for unlimited."), | |
2c5b56ce | 7580 | NULL, NULL, /* FIXME: i18n: The maximum number of target hardware watchpoints is %s. */ |
b3f42336 AC |
7581 | &remote_set_cmdlist, &remote_show_cmdlist); |
7582 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, | |
7915a72c AC |
7583 | &remote_hw_breakpoint_limit, _("\ |
7584 | Set the maximum number of target hardware breakpoints."), _("\ | |
7585 | Show the maximum number of target hardware breakpoints."), _("\ | |
7586 | Specify a negative limit for unlimited."), | |
2c5b56ce | 7587 | NULL, NULL, /* FIXME: i18n: The maximum number of target hardware breakpoints is %s. */ |
b3f42336 | 7588 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 7589 | |
4d28ad1e AC |
7590 | add_setshow_integer_cmd ("remoteaddresssize", class_obscure, |
7591 | &remote_address_size, _("\ | |
7592 | Set the maximum size of the address (in bits) in a memory packet."), _("\ | |
7593 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
7594 | NULL, | |
7595 | NULL, /* FIXME: i18n: */ | |
7596 | &setlist, &showlist); | |
c906108c | 7597 | |
444abaca | 7598 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 7599 | "X", "binary-download", 1); |
0f71a2f6 | 7600 | |
444abaca | 7601 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 7602 | "vCont", "verbose-resume", 0); |
506fb367 | 7603 | |
89be2091 DJ |
7604 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
7605 | "QPassSignals", "pass-signals", 0); | |
7606 | ||
444abaca | 7607 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 7608 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 7609 | |
444abaca | 7610 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 7611 | "P", "set-register", 1); |
d471ea57 | 7612 | |
444abaca | 7613 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 7614 | "p", "fetch-register", 1); |
b96ec7ac | 7615 | |
444abaca | 7616 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 7617 | "Z0", "software-breakpoint", 0); |
d471ea57 | 7618 | |
444abaca | 7619 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 7620 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 7621 | |
444abaca | 7622 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 7623 | "Z2", "write-watchpoint", 0); |
d471ea57 | 7624 | |
444abaca | 7625 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 7626 | "Z3", "read-watchpoint", 0); |
d471ea57 | 7627 | |
444abaca | 7628 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 7629 | "Z4", "access-watchpoint", 0); |
d471ea57 | 7630 | |
0876f84a DJ |
7631 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
7632 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 7633 | |
23181151 DJ |
7634 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
7635 | "qXfer:features:read", "target-features", 0); | |
7636 | ||
cfa9d6d9 DJ |
7637 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
7638 | "qXfer:libraries:read", "library-info", 0); | |
7639 | ||
fd79ecee DJ |
7640 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
7641 | "qXfer:memory-map:read", "memory-map", 0); | |
7642 | ||
0e7f50da UW |
7643 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_read], |
7644 | "qXfer:spu:read", "read-spu-object", 0); | |
7645 | ||
7646 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_write], | |
7647 | "qXfer:spu:write", "write-spu-object", 0); | |
7648 | ||
444abaca | 7649 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 7650 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
7651 | 0); |
7652 | ||
be2a5f71 DJ |
7653 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
7654 | "qSupported", "supported-packets", 0); | |
7655 | ||
a6b151f1 DJ |
7656 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
7657 | "vFile:open", "hostio-open", 0); | |
7658 | ||
7659 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
7660 | "vFile:pread", "hostio-pread", 0); | |
7661 | ||
7662 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
7663 | "vFile:pwrite", "hostio-pwrite", 0); | |
7664 | ||
7665 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
7666 | "vFile:close", "hostio-close", 0); | |
7667 | ||
7668 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
7669 | "vFile:unlink", "hostio-unlink", 0); | |
7670 | ||
2d717e4f DJ |
7671 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
7672 | "vAttach", "attach", 0); | |
7673 | ||
7674 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
7675 | "vRun", "run", 0); | |
7676 | ||
37a105a1 DJ |
7677 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
7678 | Z sub-packet has its own set and show commands, but users may | |
7679 | have sets to this variable in their .gdbinit files (or in their | |
7680 | documentation). */ | |
e9e68a56 | 7681 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
7682 | &remote_Z_packet_detect, _("\ |
7683 | Set use of remote protocol `Z' packets"), _("\ | |
7684 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 7685 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 7686 | packets."), |
e9e68a56 | 7687 | set_remote_protocol_Z_packet_cmd, |
2c5b56ce | 7688 | show_remote_protocol_Z_packet_cmd, /* FIXME: i18n: Use of remote protocol `Z' packets is %s. */ |
e9e68a56 | 7689 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 7690 | |
a6b151f1 DJ |
7691 | add_prefix_cmd ("remote", class_files, remote_command, _("\ |
7692 | Manipulate files on the remote system\n\ | |
7693 | Transfer files to and from the remote target system."), | |
7694 | &remote_cmdlist, "remote ", | |
7695 | 0 /* allow-unknown */, &cmdlist); | |
7696 | ||
7697 | add_cmd ("put", class_files, remote_put_command, | |
7698 | _("Copy a local file to the remote system."), | |
7699 | &remote_cmdlist); | |
7700 | ||
7701 | add_cmd ("get", class_files, remote_get_command, | |
7702 | _("Copy a remote file to the local system."), | |
7703 | &remote_cmdlist); | |
7704 | ||
7705 | add_cmd ("delete", class_files, remote_delete_command, | |
7706 | _("Delete a remote file."), | |
7707 | &remote_cmdlist); | |
7708 | ||
2d717e4f DJ |
7709 | remote_exec_file = xstrdup (""); |
7710 | add_setshow_string_noescape_cmd ("exec-file", class_files, | |
7711 | &remote_exec_file, _("\ | |
7712 | Set the remote pathname for \"run\""), _("\ | |
7713 | Show the remote pathname for \"run\""), NULL, NULL, NULL, | |
7714 | &remote_set_cmdlist, &remote_show_cmdlist); | |
7715 | ||
449092f6 CV |
7716 | /* Eventually initialize fileio. See fileio.c */ |
7717 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
c906108c | 7718 | } |