Commit | Line | Data |
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c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c | 2 | |
6aba47ca DJ |
3 | Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, |
4 | 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 | |
29182b13 | 5 | Free Software Foundation, Inc. |
c906108c | 6 | |
c5aa993b JM |
7 | This file is part of GDB. |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2 of the License, or | |
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 | |
20 | along with this program; if not, write to the Free Software | |
197e01b6 EZ |
21 | Foundation, Inc., 51 Franklin Street, Fifth Floor, |
22 | Boston, MA 02110-1301, USA. */ | |
c5aa993b | 23 | |
23860348 | 24 | /* See the GDB User Guide for details of the GDB remote protocol. */ |
c5aa993b | 25 | |
c906108c SS |
26 | #include "defs.h" |
27 | #include "gdb_string.h" | |
28 | #include <ctype.h> | |
29 | #include <fcntl.h> | |
c906108c SS |
30 | #include "inferior.h" |
31 | #include "bfd.h" | |
32 | #include "symfile.h" | |
60250e8b | 33 | #include "exceptions.h" |
c906108c | 34 | #include "target.h" |
c5aa993b | 35 | /*#include "terminal.h" */ |
c906108c SS |
36 | #include "gdbcmd.h" |
37 | #include "objfiles.h" | |
38 | #include "gdb-stabs.h" | |
39 | #include "gdbthread.h" | |
c2c6d25f | 40 | #include "remote.h" |
4e052eda | 41 | #include "regcache.h" |
fd0407d6 | 42 | #include "value.h" |
1ff9c3d6 | 43 | #include "gdb_assert.h" |
6867ae3e | 44 | #include "observer.h" |
a77053c2 | 45 | #include "solib.h" |
37a105a1 DJ |
46 | #include "cli/cli-decode.h" |
47 | #include "cli/cli-setshow.h" | |
424163ea | 48 | #include "target-descriptions.h" |
c906108c | 49 | |
7a292a7a | 50 | #include <ctype.h> |
9846de1b | 51 | #include <sys/time.h> |
c906108c | 52 | |
43ff13b4 | 53 | #include "event-loop.h" |
c2c6d25f | 54 | #include "event-top.h" |
2acceee2 | 55 | #include "inf-loop.h" |
43ff13b4 | 56 | |
c906108c SS |
57 | #include <signal.h> |
58 | #include "serial.h" | |
59 | ||
6240bebf MS |
60 | #include "gdbcore.h" /* for exec_bfd */ |
61 | ||
449092f6 CV |
62 | #include "remote-fileio.h" |
63 | ||
fd79ecee DJ |
64 | #include "memory-map.h" |
65 | ||
6765f3e5 DJ |
66 | /* The size to align memory write packets, when practical. The protocol |
67 | does not guarantee any alignment, and gdb will generate short | |
68 | writes and unaligned writes, but even as a best-effort attempt this | |
69 | can improve bulk transfers. For instance, if a write is misaligned | |
70 | relative to the target's data bus, the stub may need to make an extra | |
71 | round trip fetching data from the target. This doesn't make a | |
72 | huge difference, but it's easy to do, so we try to be helpful. | |
73 | ||
74 | The alignment chosen is arbitrary; usually data bus width is | |
75 | important here, not the possibly larger cache line size. */ | |
76 | enum { REMOTE_ALIGN_WRITES = 16 }; | |
77 | ||
23860348 | 78 | /* Prototypes for local functions. */ |
6426a772 JM |
79 | static void cleanup_sigint_signal_handler (void *dummy); |
80 | static void initialize_sigint_signal_handler (void); | |
6d820c5c | 81 | static int getpkt_sane (char **buf, long *sizeof_buf, int forever); |
6426a772 | 82 | |
a14ed312 KB |
83 | static void handle_remote_sigint (int); |
84 | static void handle_remote_sigint_twice (int); | |
85 | static void async_remote_interrupt (gdb_client_data); | |
86 | void async_remote_interrupt_twice (gdb_client_data); | |
43ff13b4 | 87 | |
a14ed312 | 88 | static void build_remote_gdbarch_data (void); |
0f71a2f6 | 89 | |
a14ed312 | 90 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 91 | |
316f2060 | 92 | static void remote_prepare_to_store (struct regcache *regcache); |
c906108c | 93 | |
56be3814 | 94 | static void remote_fetch_registers (struct regcache *regcache, int regno); |
c906108c | 95 | |
39f77062 KB |
96 | static void remote_resume (ptid_t ptid, int step, |
97 | enum target_signal siggnal); | |
98 | static void remote_async_resume (ptid_t ptid, int step, | |
a14ed312 | 99 | enum target_signal siggnal); |
a14ed312 KB |
100 | static void remote_open (char *name, int from_tty); |
101 | static void remote_async_open (char *name, int from_tty); | |
c906108c | 102 | |
a14ed312 KB |
103 | static void extended_remote_open (char *name, int from_tty); |
104 | static void extended_remote_async_open (char *name, int from_tty); | |
c906108c | 105 | |
92d1e331 DJ |
106 | static void remote_open_1 (char *, int, struct target_ops *, int extended_p, |
107 | int async_p); | |
c906108c | 108 | |
a14ed312 | 109 | static void remote_close (int quitting); |
c906108c | 110 | |
56be3814 | 111 | static void remote_store_registers (struct regcache *regcache, int regno); |
c906108c | 112 | |
a14ed312 KB |
113 | static void remote_mourn (void); |
114 | static void remote_async_mourn (void); | |
c906108c | 115 | |
a14ed312 | 116 | static void extended_remote_restart (void); |
c906108c | 117 | |
a14ed312 | 118 | static void extended_remote_mourn (void); |
c906108c | 119 | |
a14ed312 | 120 | static void remote_mourn_1 (struct target_ops *); |
c906108c | 121 | |
6d820c5c | 122 | static void remote_send (char **buf, long *sizeof_buf_p); |
c906108c | 123 | |
a14ed312 | 124 | static int readchar (int timeout); |
c906108c | 125 | |
39f77062 KB |
126 | static ptid_t remote_wait (ptid_t ptid, |
127 | struct target_waitstatus *status); | |
128 | static ptid_t remote_async_wait (ptid_t ptid, | |
129 | struct target_waitstatus *status); | |
c906108c | 130 | |
a14ed312 KB |
131 | static void remote_kill (void); |
132 | static void remote_async_kill (void); | |
c906108c | 133 | |
a14ed312 | 134 | static int tohex (int nib); |
c906108c | 135 | |
a14ed312 | 136 | static void remote_detach (char *args, int from_tty); |
c906108c | 137 | |
a14ed312 | 138 | static void remote_interrupt (int signo); |
c906108c | 139 | |
a14ed312 | 140 | static void remote_interrupt_twice (int signo); |
7a292a7a | 141 | |
a14ed312 | 142 | static void interrupt_query (void); |
c906108c | 143 | |
a14ed312 | 144 | static void set_thread (int, int); |
c906108c | 145 | |
39f77062 | 146 | static int remote_thread_alive (ptid_t); |
c906108c | 147 | |
a14ed312 | 148 | static void get_offsets (void); |
c906108c | 149 | |
6d820c5c DJ |
150 | static void skip_frame (void); |
151 | ||
152 | static long read_frame (char **buf_p, long *sizeof_buf); | |
c906108c | 153 | |
a14ed312 | 154 | static int hexnumlen (ULONGEST num); |
c906108c | 155 | |
a14ed312 | 156 | static void init_remote_ops (void); |
c906108c | 157 | |
a14ed312 | 158 | static void init_extended_remote_ops (void); |
c906108c | 159 | |
a14ed312 | 160 | static void remote_stop (void); |
c906108c | 161 | |
a14ed312 | 162 | static int ishex (int ch, int *val); |
c906108c | 163 | |
a14ed312 | 164 | static int stubhex (int ch); |
c906108c | 165 | |
a14ed312 | 166 | static int hexnumstr (char *, ULONGEST); |
c906108c | 167 | |
a14ed312 | 168 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 169 | |
a14ed312 | 170 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 171 | |
a14ed312 | 172 | static void print_packet (char *); |
c906108c | 173 | |
a14ed312 | 174 | static unsigned long crc32 (unsigned char *, int, unsigned int); |
c906108c | 175 | |
a14ed312 | 176 | static void compare_sections_command (char *, int); |
c906108c | 177 | |
a14ed312 | 178 | static void packet_command (char *, int); |
c906108c | 179 | |
a14ed312 | 180 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 181 | |
39f77062 | 182 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 183 | |
a14ed312 | 184 | static void remote_find_new_threads (void); |
c906108c | 185 | |
a14ed312 | 186 | static void record_currthread (int currthread); |
c906108c | 187 | |
30559e10 | 188 | static int fromhex (int a); |
c906108c | 189 | |
cfd77fa1 | 190 | static int hex2bin (const char *hex, gdb_byte *bin, int count); |
c906108c | 191 | |
cfd77fa1 | 192 | static int bin2hex (const gdb_byte *bin, char *hex, int count); |
234fa6d1 | 193 | |
a14ed312 | 194 | static int putpkt_binary (char *buf, int cnt); |
c906108c | 195 | |
a14ed312 | 196 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 197 | |
5a2468f5 | 198 | struct packet_config; |
5a2468f5 | 199 | |
a14ed312 | 200 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 201 | |
d471ea57 | 202 | static void update_packet_config (struct packet_config *config); |
5a2468f5 | 203 | |
bb572ddd DJ |
204 | static void set_remote_protocol_packet_cmd (char *args, int from_tty, |
205 | struct cmd_list_element *c); | |
206 | ||
207 | static void show_remote_protocol_packet_cmd (struct ui_file *file, | |
208 | int from_tty, | |
209 | struct cmd_list_element *c, | |
210 | const char *value); | |
211 | ||
a14ed312 | 212 | void _initialize_remote (void); |
c906108c | 213 | |
bb572ddd DJ |
214 | /* For "set remote" and "show remote". */ |
215 | ||
216 | static struct cmd_list_element *remote_set_cmdlist; | |
217 | static struct cmd_list_element *remote_show_cmdlist; | |
218 | ||
ea9c271d DJ |
219 | /* Description of the remote protocol state for the currently |
220 | connected target. This is per-target state, and independent of the | |
221 | selected architecture. */ | |
222 | ||
223 | struct remote_state | |
224 | { | |
225 | /* A buffer to use for incoming packets, and its current size. The | |
226 | buffer is grown dynamically for larger incoming packets. | |
227 | Outgoing packets may also be constructed in this buffer. | |
228 | BUF_SIZE is always at least REMOTE_PACKET_SIZE; | |
229 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing | |
230 | packets. */ | |
231 | char *buf; | |
232 | long buf_size; | |
be2a5f71 DJ |
233 | |
234 | /* If we negotiated packet size explicitly (and thus can bypass | |
235 | heuristics for the largest packet size that will not overflow | |
236 | a buffer in the stub), this will be set to that packet size. | |
237 | Otherwise zero, meaning to use the guessed size. */ | |
238 | long explicit_packet_size; | |
ea9c271d DJ |
239 | }; |
240 | ||
241 | /* This data could be associated with a target, but we do not always | |
242 | have access to the current target when we need it, so for now it is | |
243 | static. This will be fine for as long as only one target is in use | |
244 | at a time. */ | |
245 | static struct remote_state remote_state; | |
246 | ||
247 | static struct remote_state * | |
0b83947e | 248 | get_remote_state_raw (void) |
ea9c271d DJ |
249 | { |
250 | return &remote_state; | |
251 | } | |
252 | ||
253 | /* Description of the remote protocol for a given architecture. */ | |
d01949b6 | 254 | |
ad10f812 AC |
255 | struct packet_reg |
256 | { | |
257 | long offset; /* Offset into G packet. */ | |
258 | long regnum; /* GDB's internal register number. */ | |
259 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 260 | int in_g_packet; /* Always part of G packet. */ |
2bc416ba | 261 | /* long size in bytes; == register_size (current_gdbarch, regnum); |
23860348 | 262 | at present. */ |
c9f4d572 UW |
263 | /* char *name; == gdbarch_register_name (current_gdbarch, regnum); |
264 | at present. */ | |
ad10f812 AC |
265 | }; |
266 | ||
ea9c271d | 267 | struct remote_arch_state |
d01949b6 | 268 | { |
ad10f812 AC |
269 | /* Description of the remote protocol registers. */ |
270 | long sizeof_g_packet; | |
b323314b AC |
271 | |
272 | /* Description of the remote protocol registers indexed by REGNUM | |
f57d151a | 273 | (making an array gdbarch_num_regs in size). */ |
b323314b | 274 | struct packet_reg *regs; |
ad10f812 | 275 | |
d01949b6 AC |
276 | /* This is the size (in chars) of the first response to the ``g'' |
277 | packet. It is used as a heuristic when determining the maximum | |
278 | size of memory-read and memory-write packets. A target will | |
279 | typically only reserve a buffer large enough to hold the ``g'' | |
280 | packet. The size does not include packet overhead (headers and | |
23860348 | 281 | trailers). */ |
d01949b6 AC |
282 | long actual_register_packet_size; |
283 | ||
284 | /* This is the maximum size (in chars) of a non read/write packet. | |
23860348 | 285 | It is also used as a cap on the size of read/write packets. */ |
d01949b6 AC |
286 | long remote_packet_size; |
287 | }; | |
288 | ||
3c3bea1c | 289 | |
d01949b6 AC |
290 | /* Handle for retreving the remote protocol data from gdbarch. */ |
291 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
292 | ||
ea9c271d DJ |
293 | static struct remote_arch_state * |
294 | get_remote_arch_state (void) | |
d01949b6 | 295 | { |
451fbdda | 296 | return gdbarch_data (current_gdbarch, remote_gdbarch_data_handle); |
d01949b6 AC |
297 | } |
298 | ||
0b83947e DJ |
299 | /* Fetch the global remote target state. */ |
300 | ||
301 | static struct remote_state * | |
302 | get_remote_state (void) | |
303 | { | |
304 | /* Make sure that the remote architecture state has been | |
305 | initialized, because doing so might reallocate rs->buf. Any | |
306 | function which calls getpkt also needs to be mindful of changes | |
307 | to rs->buf, but this call limits the number of places which run | |
308 | into trouble. */ | |
309 | get_remote_arch_state (); | |
310 | ||
311 | return get_remote_state_raw (); | |
312 | } | |
313 | ||
74ca34ce DJ |
314 | static int |
315 | compare_pnums (const void *lhs_, const void *rhs_) | |
316 | { | |
317 | const struct packet_reg * const *lhs = lhs_; | |
318 | const struct packet_reg * const *rhs = rhs_; | |
319 | ||
320 | if ((*lhs)->pnum < (*rhs)->pnum) | |
321 | return -1; | |
322 | else if ((*lhs)->pnum == (*rhs)->pnum) | |
323 | return 0; | |
324 | else | |
325 | return 1; | |
326 | } | |
327 | ||
d01949b6 AC |
328 | static void * |
329 | init_remote_state (struct gdbarch *gdbarch) | |
330 | { | |
74ca34ce | 331 | int regnum, num_remote_regs, offset; |
0b83947e | 332 | struct remote_state *rs = get_remote_state_raw (); |
ea9c271d | 333 | struct remote_arch_state *rsa; |
74ca34ce | 334 | struct packet_reg **remote_regs; |
ea9c271d DJ |
335 | |
336 | rsa = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_arch_state); | |
d01949b6 | 337 | |
123dc839 DJ |
338 | /* Use the architecture to build a regnum<->pnum table, which will be |
339 | 1:1 unless a feature set specifies otherwise. */ | |
f57d151a UW |
340 | rsa->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, |
341 | gdbarch_num_regs (current_gdbarch), | |
342 | struct packet_reg); | |
343 | for (regnum = 0; regnum < gdbarch_num_regs (current_gdbarch); regnum++) | |
ad10f812 | 344 | { |
ea9c271d | 345 | struct packet_reg *r = &rsa->regs[regnum]; |
baef701f DJ |
346 | |
347 | if (register_size (current_gdbarch, regnum) == 0) | |
348 | /* Do not try to fetch zero-sized (placeholder) registers. */ | |
349 | r->pnum = -1; | |
350 | else | |
351 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
352 | ||
b323314b | 353 | r->regnum = regnum; |
74ca34ce DJ |
354 | } |
355 | ||
356 | /* Define the g/G packet format as the contents of each register | |
357 | with a remote protocol number, in order of ascending protocol | |
358 | number. */ | |
359 | ||
f57d151a UW |
360 | remote_regs = alloca (gdbarch_num_regs (current_gdbarch) |
361 | * sizeof (struct packet_reg *)); | |
362 | for (num_remote_regs = 0, regnum = 0; | |
363 | regnum < gdbarch_num_regs (current_gdbarch); | |
364 | regnum++) | |
74ca34ce DJ |
365 | if (rsa->regs[regnum].pnum != -1) |
366 | remote_regs[num_remote_regs++] = &rsa->regs[regnum]; | |
7d58c67d | 367 | |
74ca34ce DJ |
368 | qsort (remote_regs, num_remote_regs, sizeof (struct packet_reg *), |
369 | compare_pnums); | |
370 | ||
371 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
372 | { | |
373 | remote_regs[regnum]->in_g_packet = 1; | |
374 | remote_regs[regnum]->offset = offset; | |
375 | offset += register_size (current_gdbarch, remote_regs[regnum]->regnum); | |
ad10f812 AC |
376 | } |
377 | ||
74ca34ce DJ |
378 | /* Record the maximum possible size of the g packet - it may turn out |
379 | to be smaller. */ | |
380 | rsa->sizeof_g_packet = offset; | |
381 | ||
d01949b6 AC |
382 | /* Default maximum number of characters in a packet body. Many |
383 | remote stubs have a hardwired buffer size of 400 bytes | |
384 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
385 | as the maximum packet-size to ensure that the packet and an extra | |
386 | NUL character can always fit in the buffer. This stops GDB | |
387 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d DJ |
388 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
389 | rsa->remote_packet_size = 400 - 1; | |
d01949b6 | 390 | |
ea9c271d DJ |
391 | /* This one is filled in when a ``g'' packet is received. */ |
392 | rsa->actual_register_packet_size = 0; | |
393 | ||
394 | /* Should rsa->sizeof_g_packet needs more space than the | |
ad10f812 AC |
395 | default, adjust the size accordingly. Remember that each byte is |
396 | encoded as two characters. 32 is the overhead for the packet | |
397 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 398 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 399 | little. */ |
ea9c271d DJ |
400 | if (rsa->sizeof_g_packet > ((rsa->remote_packet_size - 32) / 2)) |
401 | rsa->remote_packet_size = (rsa->sizeof_g_packet * 2 + 32); | |
802188a7 | 402 | |
ea9c271d DJ |
403 | /* Make sure that the packet buffer is plenty big enough for |
404 | this architecture. */ | |
405 | if (rs->buf_size < rsa->remote_packet_size) | |
406 | { | |
407 | rs->buf_size = 2 * rsa->remote_packet_size; | |
7fca722e | 408 | rs->buf = xrealloc (rs->buf, rs->buf_size); |
ea9c271d | 409 | } |
6d820c5c | 410 | |
ea9c271d DJ |
411 | return rsa; |
412 | } | |
413 | ||
414 | /* Return the current allowed size of a remote packet. This is | |
415 | inferred from the current architecture, and should be used to | |
416 | limit the length of outgoing packets. */ | |
417 | static long | |
418 | get_remote_packet_size (void) | |
419 | { | |
be2a5f71 | 420 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
421 | struct remote_arch_state *rsa = get_remote_arch_state (); |
422 | ||
be2a5f71 DJ |
423 | if (rs->explicit_packet_size) |
424 | return rs->explicit_packet_size; | |
425 | ||
ea9c271d | 426 | return rsa->remote_packet_size; |
d01949b6 AC |
427 | } |
428 | ||
ad10f812 | 429 | static struct packet_reg * |
ea9c271d | 430 | packet_reg_from_regnum (struct remote_arch_state *rsa, long regnum) |
ad10f812 | 431 | { |
f57d151a | 432 | if (regnum < 0 && regnum >= gdbarch_num_regs (current_gdbarch)) |
b323314b AC |
433 | return NULL; |
434 | else | |
ad10f812 | 435 | { |
ea9c271d | 436 | struct packet_reg *r = &rsa->regs[regnum]; |
b323314b AC |
437 | gdb_assert (r->regnum == regnum); |
438 | return r; | |
ad10f812 | 439 | } |
ad10f812 AC |
440 | } |
441 | ||
442 | static struct packet_reg * | |
ea9c271d | 443 | packet_reg_from_pnum (struct remote_arch_state *rsa, LONGEST pnum) |
ad10f812 | 444 | { |
b323314b | 445 | int i; |
f57d151a | 446 | for (i = 0; i < gdbarch_num_regs (current_gdbarch); i++) |
ad10f812 | 447 | { |
ea9c271d | 448 | struct packet_reg *r = &rsa->regs[i]; |
b323314b AC |
449 | if (r->pnum == pnum) |
450 | return r; | |
ad10f812 AC |
451 | } |
452 | return NULL; | |
d01949b6 AC |
453 | } |
454 | ||
3c3bea1c GS |
455 | /* FIXME: graces/2002-08-08: These variables should eventually be |
456 | bound to an instance of the target object (as in gdbarch-tdep()), | |
457 | when such a thing exists. */ | |
458 | ||
459 | /* This is set to the data address of the access causing the target | |
460 | to stop for a watchpoint. */ | |
461 | static CORE_ADDR remote_watch_data_address; | |
462 | ||
94e08568 | 463 | /* This is non-zero if target stopped for a watchpoint. */ |
3c3bea1c GS |
464 | static int remote_stopped_by_watchpoint_p; |
465 | ||
c906108c SS |
466 | static struct target_ops remote_ops; |
467 | ||
468 | static struct target_ops extended_remote_ops; | |
469 | ||
43ff13b4 | 470 | /* Temporary target ops. Just like the remote_ops and |
23860348 | 471 | extended_remote_ops, but with asynchronous support. */ |
43ff13b4 JM |
472 | static struct target_ops remote_async_ops; |
473 | ||
474 | static struct target_ops extended_async_remote_ops; | |
475 | ||
6426a772 JM |
476 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
477 | ``forever'' still use the normal timeout mechanism. This is | |
478 | currently used by the ASYNC code to guarentee that target reads | |
479 | during the initial connect always time-out. Once getpkt has been | |
480 | modified to return a timeout indication and, in turn | |
481 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 482 | this can go away. */ |
6426a772 JM |
483 | static int wait_forever_enabled_p = 1; |
484 | ||
485 | ||
c906108c SS |
486 | /* This variable chooses whether to send a ^C or a break when the user |
487 | requests program interruption. Although ^C is usually what remote | |
488 | systems expect, and that is the default here, sometimes a break is | |
489 | preferable instead. */ | |
490 | ||
491 | static int remote_break; | |
492 | ||
c906108c SS |
493 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
494 | remote_open knows that we don't have a file open when the program | |
495 | starts. */ | |
819cc324 | 496 | static struct serial *remote_desc = NULL; |
c906108c | 497 | |
c906108c SS |
498 | /* This variable sets the number of bits in an address that are to be |
499 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
500 | leading zeros, the entire address would be sent. This variable | |
501 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The | |
502 | initial implementation of remote.c restricted the address sent in | |
503 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
504 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
505 | address was never sent. Since fixing this bug may cause a break in | |
506 | some remote targets this variable is principly provided to | |
23860348 | 507 | facilitate backward compatibility. */ |
c906108c SS |
508 | |
509 | static int remote_address_size; | |
510 | ||
6426a772 JM |
511 | /* Tempoary to track who currently owns the terminal. See |
512 | target_async_terminal_* for more details. */ | |
513 | ||
514 | static int remote_async_terminal_ours_p; | |
515 | ||
11cf8741 | 516 | \f |
11cf8741 | 517 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
518 | memory read/write packet. MIN (rsa->remote_packet_size, |
519 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 520 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
521 | (speed up transfers). The variables ``preferred_*'' (the user |
522 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 523 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
524 | |
525 | struct memory_packet_config | |
526 | { | |
527 | char *name; | |
528 | long size; | |
529 | int fixed_p; | |
530 | }; | |
531 | ||
532 | /* Compute the current size of a read/write packet. Since this makes | |
533 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
534 | ||
535 | static long | |
536 | get_memory_packet_size (struct memory_packet_config *config) | |
537 | { | |
d01949b6 | 538 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
539 | struct remote_arch_state *rsa = get_remote_arch_state (); |
540 | ||
11cf8741 JM |
541 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk |
542 | law?) that some hosts don't cope very well with large alloca() | |
543 | calls. Eventually the alloca() code will be replaced by calls to | |
544 | xmalloc() and make_cleanups() allowing this restriction to either | |
23860348 | 545 | be lifted or removed. */ |
11cf8741 JM |
546 | #ifndef MAX_REMOTE_PACKET_SIZE |
547 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
548 | #endif | |
3de11b2e | 549 | /* NOTE: 20 ensures we can write at least one byte. */ |
11cf8741 | 550 | #ifndef MIN_REMOTE_PACKET_SIZE |
3de11b2e | 551 | #define MIN_REMOTE_PACKET_SIZE 20 |
11cf8741 JM |
552 | #endif |
553 | long what_they_get; | |
554 | if (config->fixed_p) | |
555 | { | |
556 | if (config->size <= 0) | |
557 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
558 | else | |
559 | what_they_get = config->size; | |
560 | } | |
561 | else | |
562 | { | |
ea9c271d | 563 | what_they_get = get_remote_packet_size (); |
23860348 | 564 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
565 | if (config->size > 0 |
566 | && what_they_get > config->size) | |
567 | what_they_get = config->size; | |
be2a5f71 DJ |
568 | |
569 | /* Limit it to the size of the targets ``g'' response unless we have | |
570 | permission from the stub to use a larger packet size. */ | |
571 | if (rs->explicit_packet_size == 0 | |
572 | && rsa->actual_register_packet_size > 0 | |
573 | && what_they_get > rsa->actual_register_packet_size) | |
574 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 JM |
575 | } |
576 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
577 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
578 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
579 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
6d820c5c DJ |
580 | |
581 | /* Make sure there is room in the global buffer for this packet | |
582 | (including its trailing NUL byte). */ | |
583 | if (rs->buf_size < what_they_get + 1) | |
584 | { | |
585 | rs->buf_size = 2 * what_they_get; | |
586 | rs->buf = xrealloc (rs->buf, 2 * what_they_get); | |
587 | } | |
588 | ||
11cf8741 JM |
589 | return what_they_get; |
590 | } | |
591 | ||
592 | /* Update the size of a read/write packet. If they user wants | |
23860348 | 593 | something really big then do a sanity check. */ |
11cf8741 JM |
594 | |
595 | static void | |
596 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
597 | { | |
598 | int fixed_p = config->fixed_p; | |
599 | long size = config->size; | |
600 | if (args == NULL) | |
8a3fe4f8 | 601 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
602 | else if (strcmp (args, "hard") == 0 |
603 | || strcmp (args, "fixed") == 0) | |
604 | fixed_p = 1; | |
605 | else if (strcmp (args, "soft") == 0 | |
606 | || strcmp (args, "limit") == 0) | |
607 | fixed_p = 0; | |
608 | else | |
609 | { | |
610 | char *end; | |
611 | size = strtoul (args, &end, 0); | |
612 | if (args == end) | |
8a3fe4f8 | 613 | error (_("Invalid %s (bad syntax)."), config->name); |
11cf8741 JM |
614 | #if 0 |
615 | /* Instead of explicitly capping the size of a packet to | |
616 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
617 | instead allowed to set the size to something arbitrarily | |
23860348 | 618 | large. */ |
11cf8741 | 619 | if (size > MAX_REMOTE_PACKET_SIZE) |
8a3fe4f8 | 620 | error (_("Invalid %s (too large)."), config->name); |
11cf8741 JM |
621 | #endif |
622 | } | |
23860348 | 623 | /* Extra checks? */ |
11cf8741 JM |
624 | if (fixed_p && !config->fixed_p) |
625 | { | |
e2e0b3e5 AC |
626 | if (! query (_("The target may not be able to correctly handle a %s\n" |
627 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 628 | config->name, size)) |
8a3fe4f8 | 629 | error (_("Packet size not changed.")); |
11cf8741 | 630 | } |
23860348 | 631 | /* Update the config. */ |
11cf8741 JM |
632 | config->fixed_p = fixed_p; |
633 | config->size = size; | |
634 | } | |
635 | ||
636 | static void | |
637 | show_memory_packet_size (struct memory_packet_config *config) | |
638 | { | |
a3f17187 | 639 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 640 | if (config->fixed_p) |
a3f17187 | 641 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
642 | get_memory_packet_size (config)); |
643 | else | |
a3f17187 | 644 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
645 | get_memory_packet_size (config)); |
646 | } | |
647 | ||
648 | static struct memory_packet_config memory_write_packet_config = | |
649 | { | |
650 | "memory-write-packet-size", | |
651 | }; | |
652 | ||
653 | static void | |
654 | set_memory_write_packet_size (char *args, int from_tty) | |
655 | { | |
656 | set_memory_packet_size (args, &memory_write_packet_config); | |
657 | } | |
658 | ||
659 | static void | |
660 | show_memory_write_packet_size (char *args, int from_tty) | |
661 | { | |
662 | show_memory_packet_size (&memory_write_packet_config); | |
663 | } | |
664 | ||
665 | static long | |
666 | get_memory_write_packet_size (void) | |
667 | { | |
668 | return get_memory_packet_size (&memory_write_packet_config); | |
669 | } | |
670 | ||
671 | static struct memory_packet_config memory_read_packet_config = | |
672 | { | |
673 | "memory-read-packet-size", | |
674 | }; | |
675 | ||
676 | static void | |
677 | set_memory_read_packet_size (char *args, int from_tty) | |
678 | { | |
679 | set_memory_packet_size (args, &memory_read_packet_config); | |
680 | } | |
681 | ||
682 | static void | |
683 | show_memory_read_packet_size (char *args, int from_tty) | |
684 | { | |
685 | show_memory_packet_size (&memory_read_packet_config); | |
686 | } | |
687 | ||
688 | static long | |
689 | get_memory_read_packet_size (void) | |
690 | { | |
691 | long size = get_memory_packet_size (&memory_read_packet_config); | |
692 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an | |
693 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
694 | increased beyond this. */ |
695 | if (size > get_remote_packet_size ()) | |
696 | size = get_remote_packet_size (); | |
11cf8741 JM |
697 | return size; |
698 | } | |
699 | ||
11cf8741 | 700 | \f |
5a2468f5 JM |
701 | /* Generic configuration support for packets the stub optionally |
702 | supports. Allows the user to specify the use of the packet as well | |
23860348 | 703 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
704 | |
705 | enum packet_support | |
706 | { | |
707 | PACKET_SUPPORT_UNKNOWN = 0, | |
708 | PACKET_ENABLE, | |
709 | PACKET_DISABLE | |
710 | }; | |
711 | ||
5a2468f5 JM |
712 | struct packet_config |
713 | { | |
bb572ddd DJ |
714 | const char *name; |
715 | const char *title; | |
7f19b9a2 | 716 | enum auto_boolean detect; |
5a2468f5 JM |
717 | enum packet_support support; |
718 | }; | |
719 | ||
d471ea57 | 720 | /* Analyze a packet's return value and update the packet config |
23860348 | 721 | accordingly. */ |
d471ea57 AC |
722 | |
723 | enum packet_result | |
724 | { | |
725 | PACKET_ERROR, | |
726 | PACKET_OK, | |
727 | PACKET_UNKNOWN | |
728 | }; | |
729 | ||
5a2468f5 | 730 | static void |
d471ea57 | 731 | update_packet_config (struct packet_config *config) |
5a2468f5 | 732 | { |
d471ea57 AC |
733 | switch (config->detect) |
734 | { | |
7f19b9a2 | 735 | case AUTO_BOOLEAN_TRUE: |
d471ea57 AC |
736 | config->support = PACKET_ENABLE; |
737 | break; | |
7f19b9a2 | 738 | case AUTO_BOOLEAN_FALSE: |
d471ea57 AC |
739 | config->support = PACKET_DISABLE; |
740 | break; | |
7f19b9a2 | 741 | case AUTO_BOOLEAN_AUTO: |
d471ea57 AC |
742 | config->support = PACKET_SUPPORT_UNKNOWN; |
743 | break; | |
744 | } | |
5a2468f5 JM |
745 | } |
746 | ||
747 | static void | |
fba45db2 | 748 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
749 | { |
750 | char *support = "internal-error"; | |
751 | switch (config->support) | |
752 | { | |
753 | case PACKET_ENABLE: | |
754 | support = "enabled"; | |
755 | break; | |
756 | case PACKET_DISABLE: | |
757 | support = "disabled"; | |
758 | break; | |
759 | case PACKET_SUPPORT_UNKNOWN: | |
760 | support = "unknown"; | |
761 | break; | |
762 | } | |
763 | switch (config->detect) | |
764 | { | |
7f19b9a2 | 765 | case AUTO_BOOLEAN_AUTO: |
37a105a1 DJ |
766 | printf_filtered (_("Support for the `%s' packet is auto-detected, currently %s.\n"), |
767 | config->name, support); | |
5a2468f5 | 768 | break; |
7f19b9a2 AC |
769 | case AUTO_BOOLEAN_TRUE: |
770 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
771 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
772 | config->name, support); | |
8e248173 | 773 | break; |
5a2468f5 JM |
774 | } |
775 | } | |
776 | ||
777 | static void | |
bb572ddd DJ |
778 | add_packet_config_cmd (struct packet_config *config, const char *name, |
779 | const char *title, int legacy) | |
d471ea57 | 780 | { |
5a2468f5 JM |
781 | char *set_doc; |
782 | char *show_doc; | |
d471ea57 | 783 | char *cmd_name; |
3ed07be4 | 784 | |
5a2468f5 JM |
785 | config->name = name; |
786 | config->title = title; | |
7f19b9a2 | 787 | config->detect = AUTO_BOOLEAN_AUTO; |
8e248173 | 788 | config->support = PACKET_SUPPORT_UNKNOWN; |
b435e160 AC |
789 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
790 | name, title); | |
791 | show_doc = xstrprintf ("Show current use of remote protocol `%s' (%s) packet", | |
792 | name, title); | |
d471ea57 | 793 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 794 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 795 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
2c5b56ce | 796 | &config->detect, set_doc, show_doc, NULL, /* help_doc */ |
bb572ddd DJ |
797 | set_remote_protocol_packet_cmd, |
798 | show_remote_protocol_packet_cmd, | |
799 | &remote_set_cmdlist, &remote_show_cmdlist); | |
23860348 | 800 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
801 | if (legacy) |
802 | { | |
803 | char *legacy_name; | |
b435e160 | 804 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 805 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 806 | &remote_set_cmdlist); |
d471ea57 | 807 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 808 | &remote_show_cmdlist); |
d471ea57 | 809 | } |
5a2468f5 JM |
810 | } |
811 | ||
d471ea57 | 812 | static enum packet_result |
a76d924d | 813 | packet_check_result (const char *buf) |
5a2468f5 | 814 | { |
d471ea57 | 815 | if (buf[0] != '\0') |
5a2468f5 | 816 | { |
d471ea57 | 817 | /* The stub recognized the packet request. Check that the |
23860348 | 818 | operation succeeded. */ |
a76d924d DJ |
819 | if (buf[0] == 'E' |
820 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
821 | && buf[3] == '\0') | |
822 | /* "Enn" - definitly an error. */ | |
823 | return PACKET_ERROR; | |
824 | ||
825 | /* Always treat "E." as an error. This will be used for | |
826 | more verbose error messages, such as E.memtypes. */ | |
827 | if (buf[0] == 'E' && buf[1] == '.') | |
828 | return PACKET_ERROR; | |
829 | ||
830 | /* The packet may or may not be OK. Just assume it is. */ | |
831 | return PACKET_OK; | |
832 | } | |
833 | else | |
834 | /* The stub does not support the packet. */ | |
835 | return PACKET_UNKNOWN; | |
836 | } | |
837 | ||
838 | static enum packet_result | |
839 | packet_ok (const char *buf, struct packet_config *config) | |
840 | { | |
841 | enum packet_result result; | |
842 | ||
843 | result = packet_check_result (buf); | |
844 | switch (result) | |
845 | { | |
846 | case PACKET_OK: | |
847 | case PACKET_ERROR: | |
848 | /* The stub recognized the packet request. */ | |
d471ea57 AC |
849 | switch (config->support) |
850 | { | |
851 | case PACKET_SUPPORT_UNKNOWN: | |
852 | if (remote_debug) | |
853 | fprintf_unfiltered (gdb_stdlog, | |
854 | "Packet %s (%s) is supported\n", | |
855 | config->name, config->title); | |
856 | config->support = PACKET_ENABLE; | |
857 | break; | |
858 | case PACKET_DISABLE: | |
8e65ff28 | 859 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 860 | _("packet_ok: attempt to use a disabled packet")); |
d471ea57 AC |
861 | break; |
862 | case PACKET_ENABLE: | |
863 | break; | |
864 | } | |
a76d924d DJ |
865 | break; |
866 | case PACKET_UNKNOWN: | |
23860348 | 867 | /* The stub does not support the packet. */ |
d471ea57 AC |
868 | switch (config->support) |
869 | { | |
870 | case PACKET_ENABLE: | |
7f19b9a2 | 871 | if (config->detect == AUTO_BOOLEAN_AUTO) |
d471ea57 | 872 | /* If the stub previously indicated that the packet was |
23860348 | 873 | supported then there is a protocol error.. */ |
8a3fe4f8 | 874 | error (_("Protocol error: %s (%s) conflicting enabled responses."), |
d471ea57 AC |
875 | config->name, config->title); |
876 | else | |
23860348 | 877 | /* The user set it wrong. */ |
8a3fe4f8 | 878 | error (_("Enabled packet %s (%s) not recognized by stub"), |
d471ea57 AC |
879 | config->name, config->title); |
880 | break; | |
881 | case PACKET_SUPPORT_UNKNOWN: | |
882 | if (remote_debug) | |
883 | fprintf_unfiltered (gdb_stdlog, | |
884 | "Packet %s (%s) is NOT supported\n", | |
885 | config->name, config->title); | |
886 | config->support = PACKET_DISABLE; | |
887 | break; | |
888 | case PACKET_DISABLE: | |
889 | break; | |
890 | } | |
a76d924d | 891 | break; |
5a2468f5 | 892 | } |
a76d924d DJ |
893 | |
894 | return result; | |
5a2468f5 JM |
895 | } |
896 | ||
444abaca DJ |
897 | enum { |
898 | PACKET_vCont = 0, | |
899 | PACKET_X, | |
900 | PACKET_qSymbol, | |
901 | PACKET_P, | |
902 | PACKET_p, | |
903 | PACKET_Z0, | |
904 | PACKET_Z1, | |
905 | PACKET_Z2, | |
906 | PACKET_Z3, | |
907 | PACKET_Z4, | |
0876f84a | 908 | PACKET_qXfer_auxv, |
23181151 | 909 | PACKET_qXfer_features, |
fd79ecee | 910 | PACKET_qXfer_memory_map, |
0e7f50da UW |
911 | PACKET_qXfer_spu_read, |
912 | PACKET_qXfer_spu_write, | |
444abaca | 913 | PACKET_qGetTLSAddr, |
be2a5f71 | 914 | PACKET_qSupported, |
89be2091 | 915 | PACKET_QPassSignals, |
444abaca DJ |
916 | PACKET_MAX |
917 | }; | |
506fb367 | 918 | |
444abaca | 919 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 MS |
920 | |
921 | static void | |
444abaca DJ |
922 | set_remote_protocol_packet_cmd (char *args, int from_tty, |
923 | struct cmd_list_element *c) | |
dc8acb97 | 924 | { |
444abaca | 925 | struct packet_config *packet; |
dc8acb97 | 926 | |
444abaca DJ |
927 | for (packet = remote_protocol_packets; |
928 | packet < &remote_protocol_packets[PACKET_MAX]; | |
929 | packet++) | |
930 | { | |
931 | if (&packet->detect == c->var) | |
932 | { | |
933 | update_packet_config (packet); | |
934 | return; | |
935 | } | |
936 | } | |
937 | internal_error (__FILE__, __LINE__, "Could not find config for %s", | |
938 | c->name); | |
dc8acb97 MS |
939 | } |
940 | ||
5a2468f5 | 941 | static void |
444abaca DJ |
942 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
943 | struct cmd_list_element *c, | |
944 | const char *value) | |
5a2468f5 | 945 | { |
444abaca | 946 | struct packet_config *packet; |
5a2468f5 | 947 | |
444abaca DJ |
948 | for (packet = remote_protocol_packets; |
949 | packet < &remote_protocol_packets[PACKET_MAX]; | |
950 | packet++) | |
951 | { | |
952 | if (&packet->detect == c->var) | |
953 | { | |
954 | show_packet_config_cmd (packet); | |
955 | return; | |
956 | } | |
957 | } | |
958 | internal_error (__FILE__, __LINE__, "Could not find config for %s", | |
959 | c->name); | |
5a2468f5 JM |
960 | } |
961 | ||
d471ea57 AC |
962 | /* Should we try one of the 'Z' requests? */ |
963 | ||
964 | enum Z_packet_type | |
965 | { | |
966 | Z_PACKET_SOFTWARE_BP, | |
967 | Z_PACKET_HARDWARE_BP, | |
968 | Z_PACKET_WRITE_WP, | |
969 | Z_PACKET_READ_WP, | |
970 | Z_PACKET_ACCESS_WP, | |
971 | NR_Z_PACKET_TYPES | |
972 | }; | |
96baa820 | 973 | |
d471ea57 | 974 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 975 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 976 | |
7f19b9a2 | 977 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
978 | |
979 | static void | |
fba45db2 KB |
980 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
981 | struct cmd_list_element *c) | |
96baa820 | 982 | { |
d471ea57 AC |
983 | int i; |
984 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
985 | { | |
444abaca DJ |
986 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
987 | update_packet_config (&remote_protocol_packets[PACKET_Z0 + i]); | |
d471ea57 | 988 | } |
96baa820 JM |
989 | } |
990 | ||
991 | static void | |
08546159 AC |
992 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
993 | struct cmd_list_element *c, | |
994 | const char *value) | |
96baa820 | 995 | { |
d471ea57 AC |
996 | int i; |
997 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
998 | { | |
444abaca | 999 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 1000 | } |
96baa820 JM |
1001 | } |
1002 | ||
9d1f7ab2 MS |
1003 | /* Should we try the 'ThreadInfo' query packet? |
1004 | ||
1005 | This variable (NOT available to the user: auto-detect only!) | |
1006 | determines whether GDB will use the new, simpler "ThreadInfo" | |
1007 | query or the older, more complex syntax for thread queries. | |
802188a7 | 1008 | This is an auto-detect variable (set to true at each connect, |
9d1f7ab2 MS |
1009 | and set to false when the target fails to recognize it). */ |
1010 | ||
1011 | static int use_threadinfo_query; | |
1012 | static int use_threadextra_query; | |
1013 | ||
23860348 | 1014 | /* Tokens for use by the asynchronous signal handlers for SIGINT. */ |
d5d6fca5 DJ |
1015 | static struct async_signal_handler *sigint_remote_twice_token; |
1016 | static struct async_signal_handler *sigint_remote_token; | |
43ff13b4 | 1017 | |
c906108c SS |
1018 | /* These are pointers to hook functions that may be set in order to |
1019 | modify resume/wait behavior for a particular architecture. */ | |
1020 | ||
9a4105ab AC |
1021 | void (*deprecated_target_resume_hook) (void); |
1022 | void (*deprecated_target_wait_loop_hook) (void); | |
c906108c SS |
1023 | \f |
1024 | ||
c5aa993b | 1025 | |
c906108c SS |
1026 | /* These are the threads which we last sent to the remote system. |
1027 | -1 for all or -2 for not sent yet. */ | |
1028 | static int general_thread; | |
cce74817 | 1029 | static int continue_thread; |
c906108c SS |
1030 | |
1031 | /* Call this function as a result of | |
1032 | 1) A halt indication (T packet) containing a thread id | |
1033 | 2) A direct query of currthread | |
1034 | 3) Successful execution of set thread | |
1035 | */ | |
1036 | ||
1037 | static void | |
fba45db2 | 1038 | record_currthread (int currthread) |
c906108c | 1039 | { |
c906108c | 1040 | general_thread = currthread; |
cce74817 | 1041 | |
c906108c SS |
1042 | /* If this is a new thread, add it to GDB's thread list. |
1043 | If we leave it up to WFI to do this, bad things will happen. */ | |
39f77062 | 1044 | if (!in_thread_list (pid_to_ptid (currthread))) |
0f71a2f6 | 1045 | { |
39f77062 | 1046 | add_thread (pid_to_ptid (currthread)); |
8b93c638 | 1047 | ui_out_text (uiout, "[New "); |
39f77062 | 1048 | ui_out_text (uiout, target_pid_to_str (pid_to_ptid (currthread))); |
8b93c638 | 1049 | ui_out_text (uiout, "]\n"); |
0f71a2f6 | 1050 | } |
c906108c SS |
1051 | } |
1052 | ||
89be2091 DJ |
1053 | static char *last_pass_packet; |
1054 | ||
1055 | /* If 'QPassSignals' is supported, tell the remote stub what signals | |
1056 | it can simply pass through to the inferior without reporting. */ | |
1057 | ||
1058 | static void | |
1059 | remote_pass_signals (void) | |
1060 | { | |
1061 | if (remote_protocol_packets[PACKET_QPassSignals].support != PACKET_DISABLE) | |
1062 | { | |
1063 | char *pass_packet, *p; | |
1064 | int numsigs = (int) TARGET_SIGNAL_LAST; | |
1065 | int count = 0, i; | |
1066 | ||
1067 | gdb_assert (numsigs < 256); | |
1068 | for (i = 0; i < numsigs; i++) | |
1069 | { | |
1070 | if (signal_stop_state (i) == 0 | |
1071 | && signal_print_state (i) == 0 | |
1072 | && signal_pass_state (i) == 1) | |
1073 | count++; | |
1074 | } | |
1075 | pass_packet = xmalloc (count * 3 + strlen ("QPassSignals:") + 1); | |
1076 | strcpy (pass_packet, "QPassSignals:"); | |
1077 | p = pass_packet + strlen (pass_packet); | |
1078 | for (i = 0; i < numsigs; i++) | |
1079 | { | |
1080 | if (signal_stop_state (i) == 0 | |
1081 | && signal_print_state (i) == 0 | |
1082 | && signal_pass_state (i) == 1) | |
1083 | { | |
1084 | if (i >= 16) | |
1085 | *p++ = tohex (i >> 4); | |
1086 | *p++ = tohex (i & 15); | |
1087 | if (count) | |
1088 | *p++ = ';'; | |
1089 | else | |
1090 | break; | |
1091 | count--; | |
1092 | } | |
1093 | } | |
1094 | *p = 0; | |
1095 | if (!last_pass_packet || strcmp (last_pass_packet, pass_packet)) | |
1096 | { | |
1097 | struct remote_state *rs = get_remote_state (); | |
1098 | char *buf = rs->buf; | |
1099 | ||
1100 | putpkt (pass_packet); | |
1101 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1102 | packet_ok (buf, &remote_protocol_packets[PACKET_QPassSignals]); | |
1103 | if (last_pass_packet) | |
1104 | xfree (last_pass_packet); | |
1105 | last_pass_packet = pass_packet; | |
1106 | } | |
1107 | else | |
1108 | xfree (pass_packet); | |
1109 | } | |
1110 | } | |
1111 | ||
c906108c SS |
1112 | #define MAGIC_NULL_PID 42000 |
1113 | ||
1114 | static void | |
fba45db2 | 1115 | set_thread (int th, int gen) |
c906108c | 1116 | { |
d01949b6 | 1117 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 1118 | char *buf = rs->buf; |
cce74817 | 1119 | int state = gen ? general_thread : continue_thread; |
c906108c SS |
1120 | |
1121 | if (state == th) | |
1122 | return; | |
1123 | ||
1124 | buf[0] = 'H'; | |
1125 | buf[1] = gen ? 'g' : 'c'; | |
1126 | if (th == MAGIC_NULL_PID) | |
1127 | { | |
1128 | buf[2] = '0'; | |
1129 | buf[3] = '\0'; | |
1130 | } | |
1131 | else if (th < 0) | |
ea9c271d | 1132 | xsnprintf (&buf[2], get_remote_packet_size () - 2, "-%x", -th); |
c906108c | 1133 | else |
ea9c271d | 1134 | xsnprintf (&buf[2], get_remote_packet_size () - 2, "%x", th); |
c906108c | 1135 | putpkt (buf); |
6d820c5c | 1136 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 1137 | if (gen) |
c5aa993b | 1138 | general_thread = th; |
c906108c | 1139 | else |
cce74817 | 1140 | continue_thread = th; |
c906108c SS |
1141 | } |
1142 | \f | |
1143 | /* Return nonzero if the thread TH is still alive on the remote system. */ | |
1144 | ||
1145 | static int | |
39f77062 | 1146 | remote_thread_alive (ptid_t ptid) |
c906108c | 1147 | { |
6d820c5c | 1148 | struct remote_state *rs = get_remote_state (); |
39f77062 | 1149 | int tid = PIDGET (ptid); |
c906108c | 1150 | |
cce74817 | 1151 | if (tid < 0) |
2e9f7625 | 1152 | xsnprintf (rs->buf, get_remote_packet_size (), "T-%08x", -tid); |
c906108c | 1153 | else |
2e9f7625 DJ |
1154 | xsnprintf (rs->buf, get_remote_packet_size (), "T%08x", tid); |
1155 | putpkt (rs->buf); | |
6d820c5c | 1156 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1157 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
1158 | } |
1159 | ||
1160 | /* About these extended threadlist and threadinfo packets. They are | |
1161 | variable length packets but, the fields within them are often fixed | |
1162 | length. They are redundent enough to send over UDP as is the | |
1163 | remote protocol in general. There is a matching unit test module | |
1164 | in libstub. */ | |
1165 | ||
cce74817 JM |
1166 | #define OPAQUETHREADBYTES 8 |
1167 | ||
1168 | /* a 64 bit opaque identifier */ | |
1169 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
1170 | ||
23860348 MS |
1171 | /* WARNING: This threadref data structure comes from the remote O.S., |
1172 | libstub protocol encoding, and remote.c. it is not particularly | |
1173 | changable. */ | |
cce74817 JM |
1174 | |
1175 | /* Right now, the internal structure is int. We want it to be bigger. | |
1176 | Plan to fix this. | |
c5aa993b | 1177 | */ |
cce74817 | 1178 | |
23860348 | 1179 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 1180 | |
9d1f7ab2 | 1181 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 1182 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
1183 | |
1184 | struct gdb_ext_thread_info | |
c5aa993b | 1185 | { |
23860348 | 1186 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 1187 | int active; /* Has state interesting to GDB? |
23860348 | 1188 | regs, stack. */ |
2bc416ba | 1189 | char display[256]; /* Brief state display, name, |
cedea757 | 1190 | blocked/suspended. */ |
23860348 | 1191 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 1192 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 1193 | whatever. */ |
c5aa993b | 1194 | }; |
cce74817 JM |
1195 | |
1196 | /* The volume of remote transfers can be limited by submitting | |
1197 | a mask containing bits specifying the desired information. | |
1198 | Use a union of these values as the 'selection' parameter to | |
1199 | get_thread_info. FIXME: Make these TAG names more thread specific. | |
c5aa993b | 1200 | */ |
cce74817 JM |
1201 | |
1202 | #define TAG_THREADID 1 | |
1203 | #define TAG_EXISTS 2 | |
1204 | #define TAG_DISPLAY 4 | |
1205 | #define TAG_THREADNAME 8 | |
c5aa993b | 1206 | #define TAG_MOREDISPLAY 16 |
cce74817 | 1207 | |
23860348 | 1208 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 1209 | |
b2dd6311 | 1210 | char *unpack_varlen_hex (char *buff, ULONGEST *result); |
cce74817 | 1211 | |
a14ed312 | 1212 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 1213 | |
a14ed312 | 1214 | static char *pack_nibble (char *buf, int nibble); |
cce74817 | 1215 | |
23860348 | 1216 | static char *pack_hex_byte (char *pkt, int /* unsigned char */ byte); |
cce74817 | 1217 | |
a14ed312 | 1218 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 1219 | |
a14ed312 | 1220 | static char *pack_int (char *buf, int value); |
cce74817 | 1221 | |
a14ed312 | 1222 | static char *unpack_int (char *buf, int *value); |
cce74817 | 1223 | |
a14ed312 | 1224 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 1225 | |
23860348 | 1226 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 1227 | |
23860348 | 1228 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 1229 | |
23860348 | 1230 | void int_to_threadref (threadref *id, int value); |
cce74817 | 1231 | |
23860348 | 1232 | static int threadref_to_int (threadref *ref); |
cce74817 | 1233 | |
23860348 | 1234 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 1235 | |
23860348 | 1236 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 1237 | |
2bc416ba | 1238 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 1239 | threadref *id); |
cce74817 | 1240 | |
a14ed312 | 1241 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 1242 | threadref *expectedref, |
a14ed312 KB |
1243 | struct gdb_ext_thread_info |
1244 | *info); | |
cce74817 JM |
1245 | |
1246 | ||
2bc416ba | 1247 | static int remote_get_threadinfo (threadref *threadid, |
23860348 | 1248 | int fieldset, /*TAG mask */ |
a14ed312 | 1249 | struct gdb_ext_thread_info *info); |
cce74817 | 1250 | |
a14ed312 KB |
1251 | static char *pack_threadlist_request (char *pkt, int startflag, |
1252 | int threadcount, | |
23860348 | 1253 | threadref *nextthread); |
cce74817 | 1254 | |
a14ed312 KB |
1255 | static int parse_threadlist_response (char *pkt, |
1256 | int result_limit, | |
23860348 | 1257 | threadref *original_echo, |
2bc416ba | 1258 | threadref *resultlist, |
23860348 | 1259 | int *doneflag); |
cce74817 | 1260 | |
a14ed312 | 1261 | static int remote_get_threadlist (int startflag, |
23860348 | 1262 | threadref *nextthread, |
a14ed312 KB |
1263 | int result_limit, |
1264 | int *done, | |
2bc416ba | 1265 | int *result_count, |
23860348 | 1266 | threadref *threadlist); |
cce74817 | 1267 | |
23860348 | 1268 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 1269 | |
a14ed312 KB |
1270 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
1271 | void *context, int looplimit); | |
cce74817 | 1272 | |
23860348 | 1273 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 1274 | |
23860348 | 1275 | /* Encode 64 bits in 16 chars of hex. */ |
c906108c SS |
1276 | |
1277 | static const char hexchars[] = "0123456789abcdef"; | |
1278 | ||
1279 | static int | |
fba45db2 | 1280 | ishex (int ch, int *val) |
c906108c SS |
1281 | { |
1282 | if ((ch >= 'a') && (ch <= 'f')) | |
1283 | { | |
1284 | *val = ch - 'a' + 10; | |
1285 | return 1; | |
1286 | } | |
1287 | if ((ch >= 'A') && (ch <= 'F')) | |
1288 | { | |
1289 | *val = ch - 'A' + 10; | |
1290 | return 1; | |
1291 | } | |
1292 | if ((ch >= '0') && (ch <= '9')) | |
1293 | { | |
1294 | *val = ch - '0'; | |
1295 | return 1; | |
1296 | } | |
1297 | return 0; | |
1298 | } | |
1299 | ||
1300 | static int | |
fba45db2 | 1301 | stubhex (int ch) |
c906108c SS |
1302 | { |
1303 | if (ch >= 'a' && ch <= 'f') | |
1304 | return ch - 'a' + 10; | |
1305 | if (ch >= '0' && ch <= '9') | |
1306 | return ch - '0'; | |
1307 | if (ch >= 'A' && ch <= 'F') | |
1308 | return ch - 'A' + 10; | |
1309 | return -1; | |
1310 | } | |
1311 | ||
1312 | static int | |
fba45db2 | 1313 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
1314 | { |
1315 | int nibble; | |
1316 | int retval = 0; | |
1317 | ||
1318 | while (fieldlength) | |
1319 | { | |
1320 | nibble = stubhex (*buff++); | |
1321 | retval |= nibble; | |
1322 | fieldlength--; | |
1323 | if (fieldlength) | |
1324 | retval = retval << 4; | |
1325 | } | |
1326 | return retval; | |
1327 | } | |
1328 | ||
1329 | char * | |
fba45db2 | 1330 | unpack_varlen_hex (char *buff, /* packet to parse */ |
b2dd6311 | 1331 | ULONGEST *result) |
c906108c SS |
1332 | { |
1333 | int nibble; | |
d49c44d5 | 1334 | ULONGEST retval = 0; |
c906108c SS |
1335 | |
1336 | while (ishex (*buff, &nibble)) | |
1337 | { | |
1338 | buff++; | |
1339 | retval = retval << 4; | |
1340 | retval |= nibble & 0x0f; | |
1341 | } | |
1342 | *result = retval; | |
1343 | return buff; | |
1344 | } | |
1345 | ||
1346 | static char * | |
fba45db2 | 1347 | unpack_nibble (char *buf, int *val) |
c906108c SS |
1348 | { |
1349 | ishex (*buf++, val); | |
1350 | return buf; | |
1351 | } | |
1352 | ||
1353 | static char * | |
fba45db2 | 1354 | pack_nibble (char *buf, int nibble) |
c906108c SS |
1355 | { |
1356 | *buf++ = hexchars[(nibble & 0x0f)]; | |
1357 | return buf; | |
1358 | } | |
1359 | ||
1360 | static char * | |
fba45db2 | 1361 | pack_hex_byte (char *pkt, int byte) |
c906108c SS |
1362 | { |
1363 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
1364 | *pkt++ = hexchars[(byte & 0xf)]; | |
1365 | return pkt; | |
1366 | } | |
1367 | ||
1368 | static char * | |
fba45db2 | 1369 | unpack_byte (char *buf, int *value) |
c906108c SS |
1370 | { |
1371 | *value = stub_unpack_int (buf, 2); | |
1372 | return buf + 2; | |
1373 | } | |
1374 | ||
1375 | static char * | |
fba45db2 | 1376 | pack_int (char *buf, int value) |
c906108c SS |
1377 | { |
1378 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
1379 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
1380 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
1381 | buf = pack_hex_byte (buf, (value & 0xff)); | |
1382 | return buf; | |
1383 | } | |
1384 | ||
1385 | static char * | |
fba45db2 | 1386 | unpack_int (char *buf, int *value) |
c906108c SS |
1387 | { |
1388 | *value = stub_unpack_int (buf, 8); | |
1389 | return buf + 8; | |
1390 | } | |
1391 | ||
23860348 | 1392 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 1393 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
1394 | |
1395 | static char * | |
fba45db2 | 1396 | pack_string (char *pkt, char *string) |
c906108c SS |
1397 | { |
1398 | char ch; | |
1399 | int len; | |
1400 | ||
1401 | len = strlen (string); | |
1402 | if (len > 200) | |
23860348 | 1403 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
1404 | pkt = pack_hex_byte (pkt, len); |
1405 | while (len-- > 0) | |
1406 | { | |
1407 | ch = *string++; | |
1408 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 1409 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
1410 | *pkt++ = ch; |
1411 | } | |
1412 | return pkt; | |
1413 | } | |
1414 | #endif /* 0 (unused) */ | |
1415 | ||
1416 | static char * | |
fba45db2 | 1417 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
1418 | { |
1419 | while (length--) | |
1420 | *dest++ = *src++; | |
1421 | *dest = '\0'; | |
1422 | return src; | |
1423 | } | |
1424 | ||
1425 | static char * | |
fba45db2 | 1426 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
1427 | { |
1428 | char *limit; | |
1429 | unsigned char *altid; | |
1430 | ||
1431 | altid = (unsigned char *) id; | |
1432 | limit = pkt + BUF_THREAD_ID_SIZE; | |
1433 | while (pkt < limit) | |
1434 | pkt = pack_hex_byte (pkt, *altid++); | |
1435 | return pkt; | |
1436 | } | |
1437 | ||
1438 | ||
1439 | static char * | |
fba45db2 | 1440 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
1441 | { |
1442 | char *altref; | |
1443 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
1444 | int x, y; | |
1445 | ||
1446 | altref = (char *) id; | |
1447 | ||
1448 | while (inbuf < limit) | |
1449 | { | |
1450 | x = stubhex (*inbuf++); | |
1451 | y = stubhex (*inbuf++); | |
1452 | *altref++ = (x << 4) | y; | |
1453 | } | |
1454 | return inbuf; | |
1455 | } | |
1456 | ||
1457 | /* Externally, threadrefs are 64 bits but internally, they are still | |
1458 | ints. This is due to a mismatch of specifications. We would like | |
1459 | to use 64bit thread references internally. This is an adapter | |
1460 | function. */ | |
1461 | ||
1462 | void | |
fba45db2 | 1463 | int_to_threadref (threadref *id, int value) |
c906108c SS |
1464 | { |
1465 | unsigned char *scan; | |
1466 | ||
1467 | scan = (unsigned char *) id; | |
1468 | { | |
1469 | int i = 4; | |
1470 | while (i--) | |
1471 | *scan++ = 0; | |
1472 | } | |
1473 | *scan++ = (value >> 24) & 0xff; | |
1474 | *scan++ = (value >> 16) & 0xff; | |
1475 | *scan++ = (value >> 8) & 0xff; | |
1476 | *scan++ = (value & 0xff); | |
1477 | } | |
1478 | ||
1479 | static int | |
fba45db2 | 1480 | threadref_to_int (threadref *ref) |
c906108c SS |
1481 | { |
1482 | int i, value = 0; | |
1483 | unsigned char *scan; | |
1484 | ||
cfd77fa1 | 1485 | scan = *ref; |
c906108c SS |
1486 | scan += 4; |
1487 | i = 4; | |
1488 | while (i-- > 0) | |
1489 | value = (value << 8) | ((*scan++) & 0xff); | |
1490 | return value; | |
1491 | } | |
1492 | ||
1493 | static void | |
fba45db2 | 1494 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
1495 | { |
1496 | int i; | |
1497 | unsigned char *csrc, *cdest; | |
1498 | ||
1499 | csrc = (unsigned char *) src; | |
1500 | cdest = (unsigned char *) dest; | |
1501 | i = 8; | |
1502 | while (i--) | |
1503 | *cdest++ = *csrc++; | |
1504 | } | |
1505 | ||
1506 | static int | |
fba45db2 | 1507 | threadmatch (threadref *dest, threadref *src) |
c906108c | 1508 | { |
23860348 | 1509 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
1510 | #if 0 |
1511 | unsigned char *srcp, *destp; | |
1512 | int i, result; | |
1513 | srcp = (char *) src; | |
1514 | destp = (char *) dest; | |
1515 | ||
1516 | result = 1; | |
1517 | while (i-- > 0) | |
1518 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
1519 | return result; | |
1520 | #endif | |
1521 | return 1; | |
1522 | } | |
1523 | ||
1524 | /* | |
c5aa993b JM |
1525 | threadid:1, # always request threadid |
1526 | context_exists:2, | |
1527 | display:4, | |
1528 | unique_name:8, | |
1529 | more_display:16 | |
1530 | */ | |
c906108c SS |
1531 | |
1532 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
1533 | ||
1534 | static char * | |
fba45db2 | 1535 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 1536 | { |
23860348 MS |
1537 | *pkt++ = 'q'; /* Info Query */ |
1538 | *pkt++ = 'P'; /* process or thread info */ | |
1539 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 1540 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 1541 | *pkt = '\0'; /* terminate */ |
c906108c SS |
1542 | return pkt; |
1543 | } | |
1544 | ||
23860348 | 1545 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 1546 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 1547 | add more fields as time goes by. */ |
c906108c | 1548 | |
23860348 | 1549 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 1550 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 1551 | fetch registers and its stack? */ |
c5aa993b | 1552 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 1553 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 1554 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 1555 | the process. */ |
c906108c SS |
1556 | |
1557 | static int | |
fba45db2 KB |
1558 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
1559 | struct gdb_ext_thread_info *info) | |
c906108c | 1560 | { |
d01949b6 | 1561 | struct remote_state *rs = get_remote_state (); |
c906108c | 1562 | int mask, length; |
cfd77fa1 | 1563 | int tag; |
c906108c | 1564 | threadref ref; |
6d820c5c | 1565 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
1566 | int retval = 1; |
1567 | ||
23860348 | 1568 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
1569 | info->active = 0; |
1570 | info->display[0] = '\0'; | |
1571 | info->shortname[0] = '\0'; | |
1572 | info->more_display[0] = '\0'; | |
1573 | ||
23860348 MS |
1574 | /* Assume the characters indicating the packet type have been |
1575 | stripped. */ | |
c906108c SS |
1576 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
1577 | pkt = unpack_threadid (pkt, &ref); | |
1578 | ||
1579 | if (mask == 0) | |
8a3fe4f8 | 1580 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 1581 | if (!threadmatch (&ref, expectedref)) |
23860348 | 1582 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 1583 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
1584 | return 0; |
1585 | } | |
1586 | copy_threadref (&info->threadid, &ref); | |
1587 | ||
23860348 | 1588 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 1589 | |
23860348 MS |
1590 | /* Packets are terminated with nulls. */ |
1591 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
1592 | { |
1593 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
1594 | pkt = unpack_byte (pkt, &length); /* length */ |
1595 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 1596 | { |
8a3fe4f8 | 1597 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
1598 | retval = 0; |
1599 | break; | |
1600 | } | |
1601 | if (tag == TAG_THREADID) | |
1602 | { | |
1603 | if (length != 16) | |
1604 | { | |
8a3fe4f8 | 1605 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
1606 | retval = 0; |
1607 | break; | |
1608 | } | |
1609 | pkt = unpack_threadid (pkt, &ref); | |
1610 | mask = mask & ~TAG_THREADID; | |
1611 | continue; | |
1612 | } | |
1613 | if (tag == TAG_EXISTS) | |
1614 | { | |
1615 | info->active = stub_unpack_int (pkt, length); | |
1616 | pkt += length; | |
1617 | mask = mask & ~(TAG_EXISTS); | |
1618 | if (length > 8) | |
1619 | { | |
8a3fe4f8 | 1620 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
1621 | retval = 0; |
1622 | break; | |
1623 | } | |
1624 | continue; | |
1625 | } | |
1626 | if (tag == TAG_THREADNAME) | |
1627 | { | |
1628 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
1629 | mask = mask & ~TAG_THREADNAME; | |
1630 | continue; | |
1631 | } | |
1632 | if (tag == TAG_DISPLAY) | |
1633 | { | |
1634 | pkt = unpack_string (pkt, &info->display[0], length); | |
1635 | mask = mask & ~TAG_DISPLAY; | |
1636 | continue; | |
1637 | } | |
1638 | if (tag == TAG_MOREDISPLAY) | |
1639 | { | |
1640 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
1641 | mask = mask & ~TAG_MOREDISPLAY; | |
1642 | continue; | |
1643 | } | |
8a3fe4f8 | 1644 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 1645 | break; /* Not a tag we know about. */ |
c906108c SS |
1646 | } |
1647 | return retval; | |
1648 | } | |
1649 | ||
1650 | static int | |
fba45db2 KB |
1651 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
1652 | struct gdb_ext_thread_info *info) | |
c906108c | 1653 | { |
d01949b6 | 1654 | struct remote_state *rs = get_remote_state (); |
c906108c | 1655 | int result; |
c906108c | 1656 | |
2e9f7625 DJ |
1657 | pack_threadinfo_request (rs->buf, fieldset, threadid); |
1658 | putpkt (rs->buf); | |
6d820c5c | 1659 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1660 | result = remote_unpack_thread_info_response (rs->buf + 2, |
23860348 | 1661 | threadid, info); |
c906108c SS |
1662 | return result; |
1663 | } | |
1664 | ||
c906108c SS |
1665 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
1666 | ||
1667 | static char * | |
fba45db2 KB |
1668 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
1669 | threadref *nextthread) | |
c906108c SS |
1670 | { |
1671 | *pkt++ = 'q'; /* info query packet */ | |
1672 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 1673 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
1674 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
1675 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
1676 | *pkt = '\0'; | |
1677 | return pkt; | |
1678 | } | |
1679 | ||
1680 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
1681 | ||
1682 | static int | |
fba45db2 KB |
1683 | parse_threadlist_response (char *pkt, int result_limit, |
1684 | threadref *original_echo, threadref *resultlist, | |
1685 | int *doneflag) | |
c906108c | 1686 | { |
d01949b6 | 1687 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1688 | char *limit; |
1689 | int count, resultcount, done; | |
1690 | ||
1691 | resultcount = 0; | |
1692 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 1693 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 1694 | /* done parse past here */ |
c906108c SS |
1695 | pkt = unpack_byte (pkt, &count); /* count field */ |
1696 | pkt = unpack_nibble (pkt, &done); | |
1697 | /* The first threadid is the argument threadid. */ | |
1698 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
1699 | while ((count-- > 0) && (pkt < limit)) | |
1700 | { | |
1701 | pkt = unpack_threadid (pkt, resultlist++); | |
1702 | if (resultcount++ >= result_limit) | |
1703 | break; | |
1704 | } | |
1705 | if (doneflag) | |
1706 | *doneflag = done; | |
1707 | return resultcount; | |
1708 | } | |
1709 | ||
1710 | static int | |
fba45db2 KB |
1711 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
1712 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 1713 | { |
d01949b6 | 1714 | struct remote_state *rs = get_remote_state (); |
c906108c | 1715 | static threadref echo_nextthread; |
c906108c SS |
1716 | int result = 1; |
1717 | ||
23860348 | 1718 | /* Trancate result limit to be smaller than the packet size. */ |
ea9c271d DJ |
1719 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) >= get_remote_packet_size ()) |
1720 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; | |
c906108c | 1721 | |
6d820c5c DJ |
1722 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
1723 | putpkt (rs->buf); | |
1724 | getpkt (&rs->buf, &rs->buf_size, 0); | |
c906108c SS |
1725 | |
1726 | *result_count = | |
6d820c5c | 1727 | parse_threadlist_response (rs->buf + 2, result_limit, &echo_nextthread, |
c906108c SS |
1728 | threadlist, done); |
1729 | ||
1730 | if (!threadmatch (&echo_nextthread, nextthread)) | |
1731 | { | |
23860348 MS |
1732 | /* FIXME: This is a good reason to drop the packet. */ |
1733 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
1734 | /* Possabilities : |
1735 | retransmit immediatly - race conditions | |
1736 | retransmit after timeout - yes | |
1737 | exit | |
1738 | wait for packet, then exit | |
1739 | */ | |
8a3fe4f8 | 1740 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 1741 | return 0; /* I choose simply exiting. */ |
c906108c SS |
1742 | } |
1743 | if (*result_count <= 0) | |
1744 | { | |
1745 | if (*done != 1) | |
1746 | { | |
8a3fe4f8 | 1747 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
1748 | result = 0; |
1749 | } | |
1750 | return result; /* break; */ | |
1751 | } | |
1752 | if (*result_count > result_limit) | |
1753 | { | |
1754 | *result_count = 0; | |
8a3fe4f8 | 1755 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
1756 | return 0; |
1757 | } | |
1758 | return result; | |
1759 | } | |
1760 | ||
23860348 MS |
1761 | /* This is the interface between remote and threads, remotes upper |
1762 | interface. */ | |
c906108c SS |
1763 | |
1764 | /* remote_find_new_threads retrieves the thread list and for each | |
1765 | thread in the list, looks up the thread in GDB's internal list, | |
1766 | ading the thread if it does not already exist. This involves | |
1767 | getting partial thread lists from the remote target so, polling the | |
1768 | quit_flag is required. */ | |
1769 | ||
1770 | ||
23860348 | 1771 | /* About this many threadisds fit in a packet. */ |
c906108c SS |
1772 | |
1773 | #define MAXTHREADLISTRESULTS 32 | |
1774 | ||
1775 | static int | |
fba45db2 KB |
1776 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
1777 | int looplimit) | |
c906108c SS |
1778 | { |
1779 | int done, i, result_count; | |
1780 | int startflag = 1; | |
1781 | int result = 1; | |
1782 | int loopcount = 0; | |
1783 | static threadref nextthread; | |
1784 | static threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
1785 | ||
1786 | done = 0; | |
1787 | while (!done) | |
1788 | { | |
1789 | if (loopcount++ > looplimit) | |
1790 | { | |
1791 | result = 0; | |
8a3fe4f8 | 1792 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
1793 | break; |
1794 | } | |
1795 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS, | |
1796 | &done, &result_count, resultthreadlist)) | |
1797 | { | |
1798 | result = 0; | |
1799 | break; | |
1800 | } | |
23860348 | 1801 | /* Clear for later iterations. */ |
c906108c SS |
1802 | startflag = 0; |
1803 | /* Setup to resume next batch of thread references, set nextthread. */ | |
1804 | if (result_count >= 1) | |
1805 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |
1806 | i = 0; | |
1807 | while (result_count--) | |
1808 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |
1809 | break; | |
1810 | } | |
1811 | return result; | |
1812 | } | |
1813 | ||
1814 | static int | |
fba45db2 | 1815 | remote_newthread_step (threadref *ref, void *context) |
c906108c | 1816 | { |
39f77062 | 1817 | ptid_t ptid; |
c906108c | 1818 | |
39f77062 KB |
1819 | ptid = pid_to_ptid (threadref_to_int (ref)); |
1820 | ||
1821 | if (!in_thread_list (ptid)) | |
1822 | add_thread (ptid); | |
c906108c SS |
1823 | return 1; /* continue iterator */ |
1824 | } | |
1825 | ||
1826 | #define CRAZY_MAX_THREADS 1000 | |
1827 | ||
39f77062 KB |
1828 | static ptid_t |
1829 | remote_current_thread (ptid_t oldpid) | |
c906108c | 1830 | { |
d01949b6 | 1831 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1832 | |
1833 | putpkt ("qC"); | |
6d820c5c | 1834 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1835 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
c273b20f JB |
1836 | /* Use strtoul here, so we'll correctly parse values whose highest |
1837 | bit is set. The protocol carries them as a simple series of | |
1838 | hex digits; in the absence of a sign, strtol will see such | |
1839 | values as positive numbers out of range for signed 'long', and | |
1840 | return LONG_MAX to indicate an overflow. */ | |
2e9f7625 | 1841 | return pid_to_ptid (strtoul (&rs->buf[2], NULL, 16)); |
c906108c SS |
1842 | else |
1843 | return oldpid; | |
1844 | } | |
1845 | ||
802188a7 RM |
1846 | /* Find new threads for info threads command. |
1847 | * Original version, using John Metzler's thread protocol. | |
9d1f7ab2 | 1848 | */ |
cce74817 JM |
1849 | |
1850 | static void | |
fba45db2 | 1851 | remote_find_new_threads (void) |
c906108c | 1852 | { |
c5aa993b JM |
1853 | remote_threadlist_iterator (remote_newthread_step, 0, |
1854 | CRAZY_MAX_THREADS); | |
39f77062 KB |
1855 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) /* ack ack ack */ |
1856 | inferior_ptid = remote_current_thread (inferior_ptid); | |
c906108c SS |
1857 | } |
1858 | ||
9d1f7ab2 MS |
1859 | /* |
1860 | * Find all threads for info threads command. | |
1861 | * Uses new thread protocol contributed by Cisco. | |
1862 | * Falls back and attempts to use the older method (above) | |
1863 | * if the target doesn't respond to the new method. | |
1864 | */ | |
1865 | ||
0f71a2f6 JM |
1866 | static void |
1867 | remote_threads_info (void) | |
1868 | { | |
d01949b6 | 1869 | struct remote_state *rs = get_remote_state (); |
085dd6e6 | 1870 | char *bufp; |
0f71a2f6 JM |
1871 | int tid; |
1872 | ||
1873 | if (remote_desc == 0) /* paranoia */ | |
8a3fe4f8 | 1874 | error (_("Command can only be used when connected to the remote target.")); |
0f71a2f6 | 1875 | |
9d1f7ab2 MS |
1876 | if (use_threadinfo_query) |
1877 | { | |
1878 | putpkt ("qfThreadInfo"); | |
6d820c5c | 1879 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1880 | bufp = rs->buf; |
9d1f7ab2 | 1881 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 1882 | { |
9d1f7ab2 MS |
1883 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
1884 | { | |
1885 | do | |
1886 | { | |
c273b20f JB |
1887 | /* Use strtoul here, so we'll correctly parse values |
1888 | whose highest bit is set. The protocol carries | |
1889 | them as a simple series of hex digits; in the | |
1890 | absence of a sign, strtol will see such values as | |
1891 | positive numbers out of range for signed 'long', | |
1892 | and return LONG_MAX to indicate an overflow. */ | |
1893 | tid = strtoul (bufp, &bufp, 16); | |
39f77062 KB |
1894 | if (tid != 0 && !in_thread_list (pid_to_ptid (tid))) |
1895 | add_thread (pid_to_ptid (tid)); | |
9d1f7ab2 MS |
1896 | } |
1897 | while (*bufp++ == ','); /* comma-separated list */ | |
1898 | putpkt ("qsThreadInfo"); | |
6d820c5c | 1899 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1900 | bufp = rs->buf; |
9d1f7ab2 MS |
1901 | } |
1902 | return; /* done */ | |
1903 | } | |
1904 | } | |
1905 | ||
23860348 | 1906 | /* Else fall back to old method based on jmetzler protocol. */ |
9d1f7ab2 MS |
1907 | use_threadinfo_query = 0; |
1908 | remote_find_new_threads (); | |
1909 | return; | |
1910 | } | |
1911 | ||
802188a7 | 1912 | /* |
9d1f7ab2 MS |
1913 | * Collect a descriptive string about the given thread. |
1914 | * The target may say anything it wants to about the thread | |
1915 | * (typically info about its blocked / runnable state, name, etc.). | |
1916 | * This string will appear in the info threads display. | |
802188a7 | 1917 | * |
9d1f7ab2 MS |
1918 | * Optional: targets are not required to implement this function. |
1919 | */ | |
1920 | ||
1921 | static char * | |
1922 | remote_threads_extra_info (struct thread_info *tp) | |
1923 | { | |
d01949b6 | 1924 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
1925 | int result; |
1926 | int set; | |
1927 | threadref id; | |
1928 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 1929 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
1930 | int n = 0; /* position in display_buf */ |
1931 | ||
1932 | if (remote_desc == 0) /* paranoia */ | |
8e65ff28 | 1933 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 1934 | _("remote_threads_extra_info")); |
9d1f7ab2 MS |
1935 | |
1936 | if (use_threadextra_query) | |
1937 | { | |
2e9f7625 | 1938 | xsnprintf (rs->buf, get_remote_packet_size (), "qThreadExtraInfo,%x", |
ecbc58df | 1939 | PIDGET (tp->ptid)); |
2e9f7625 | 1940 | putpkt (rs->buf); |
6d820c5c | 1941 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1942 | if (rs->buf[0] != 0) |
9d1f7ab2 | 1943 | { |
2e9f7625 DJ |
1944 | n = min (strlen (rs->buf) / 2, sizeof (display_buf)); |
1945 | result = hex2bin (rs->buf, (gdb_byte *) display_buf, n); | |
30559e10 | 1946 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
1947 | return display_buf; |
1948 | } | |
0f71a2f6 | 1949 | } |
9d1f7ab2 MS |
1950 | |
1951 | /* If the above query fails, fall back to the old method. */ | |
1952 | use_threadextra_query = 0; | |
1953 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
1954 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
39f77062 | 1955 | int_to_threadref (&id, PIDGET (tp->ptid)); |
9d1f7ab2 MS |
1956 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
1957 | if (threadinfo.active) | |
0f71a2f6 | 1958 | { |
9d1f7ab2 | 1959 | if (*threadinfo.shortname) |
2bc416ba | 1960 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
ecbc58df | 1961 | " Name: %s,", threadinfo.shortname); |
9d1f7ab2 | 1962 | if (*threadinfo.display) |
2bc416ba | 1963 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 1964 | " State: %s,", threadinfo.display); |
9d1f7ab2 | 1965 | if (*threadinfo.more_display) |
2bc416ba | 1966 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 1967 | " Priority: %s", threadinfo.more_display); |
9d1f7ab2 MS |
1968 | |
1969 | if (n > 0) | |
c5aa993b | 1970 | { |
23860348 | 1971 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
1972 | if (',' == display_buf[n-1]) |
1973 | display_buf[n-1] = ' '; | |
1974 | return display_buf; | |
c5aa993b | 1975 | } |
0f71a2f6 | 1976 | } |
9d1f7ab2 | 1977 | return NULL; |
0f71a2f6 | 1978 | } |
c906108c | 1979 | \f |
c5aa993b | 1980 | |
24b06219 | 1981 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
1982 | |
1983 | static void | |
fba45db2 | 1984 | extended_remote_restart (void) |
c906108c | 1985 | { |
d01949b6 | 1986 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1987 | |
1988 | /* Send the restart command; for reasons I don't understand the | |
1989 | remote side really expects a number after the "R". */ | |
ea9c271d | 1990 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); |
6d820c5c | 1991 | putpkt (rs->buf); |
c906108c | 1992 | |
ad9a8f3f | 1993 | remote_fileio_reset (); |
2bc416ba | 1994 | |
c906108c SS |
1995 | /* Now query for status so this looks just like we restarted |
1996 | gdbserver from scratch. */ | |
1997 | putpkt ("?"); | |
01d3a6ce | 1998 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c SS |
1999 | } |
2000 | \f | |
2001 | /* Clean up connection to a remote debugger. */ | |
2002 | ||
c906108c | 2003 | static void |
fba45db2 | 2004 | remote_close (int quitting) |
c906108c SS |
2005 | { |
2006 | if (remote_desc) | |
2cd58942 | 2007 | serial_close (remote_desc); |
c906108c SS |
2008 | remote_desc = NULL; |
2009 | } | |
2010 | ||
23860348 | 2011 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
2012 | |
2013 | static void | |
fba45db2 | 2014 | get_offsets (void) |
c906108c | 2015 | { |
d01949b6 | 2016 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 2017 | char *buf; |
085dd6e6 | 2018 | char *ptr; |
c906108c SS |
2019 | int lose; |
2020 | CORE_ADDR text_addr, data_addr, bss_addr; | |
2021 | struct section_offsets *offs; | |
2022 | ||
2023 | putpkt ("qOffsets"); | |
6d820c5c | 2024 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2025 | buf = rs->buf; |
c906108c SS |
2026 | |
2027 | if (buf[0] == '\000') | |
2028 | return; /* Return silently. Stub doesn't support | |
23860348 | 2029 | this command. */ |
c906108c SS |
2030 | if (buf[0] == 'E') |
2031 | { | |
8a3fe4f8 | 2032 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
2033 | return; |
2034 | } | |
2035 | ||
2036 | /* Pick up each field in turn. This used to be done with scanf, but | |
2037 | scanf will make trouble if CORE_ADDR size doesn't match | |
2038 | conversion directives correctly. The following code will work | |
2039 | with any size of CORE_ADDR. */ | |
2040 | text_addr = data_addr = bss_addr = 0; | |
2041 | ptr = buf; | |
2042 | lose = 0; | |
2043 | ||
2044 | if (strncmp (ptr, "Text=", 5) == 0) | |
2045 | { | |
2046 | ptr += 5; | |
2047 | /* Don't use strtol, could lose on big values. */ | |
2048 | while (*ptr && *ptr != ';') | |
2049 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
2050 | } | |
2051 | else | |
2052 | lose = 1; | |
2053 | ||
2054 | if (!lose && strncmp (ptr, ";Data=", 6) == 0) | |
2055 | { | |
2056 | ptr += 6; | |
2057 | while (*ptr && *ptr != ';') | |
2058 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
2059 | } | |
2060 | else | |
2061 | lose = 1; | |
2062 | ||
2063 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
2064 | { | |
2065 | ptr += 5; | |
2066 | while (*ptr && *ptr != ';') | |
2067 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
2068 | } | |
2069 | else | |
2070 | lose = 1; | |
2071 | ||
2072 | if (lose) | |
8a3fe4f8 | 2073 | error (_("Malformed response to offset query, %s"), buf); |
c906108c SS |
2074 | |
2075 | if (symfile_objfile == NULL) | |
2076 | return; | |
2077 | ||
802188a7 | 2078 | offs = ((struct section_offsets *) |
a39a16c4 | 2079 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 2080 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 2081 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 2082 | |
a4c8257b | 2083 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; |
c906108c SS |
2084 | |
2085 | /* This is a temporary kludge to force data and bss to use the same offsets | |
2086 | because that's what nlmconv does now. The real solution requires changes | |
2087 | to the stub and remote.c that I don't have time to do right now. */ | |
2088 | ||
a4c8257b EZ |
2089 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; |
2090 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
c906108c SS |
2091 | |
2092 | objfile_relocate (symfile_objfile, offs); | |
2093 | } | |
2094 | ||
8621d6a9 | 2095 | /* Stub for catch_exception. */ |
0f71a2f6 | 2096 | |
9cbc821d | 2097 | static void |
8621d6a9 | 2098 | remote_start_remote (struct ui_out *uiout, void *from_tty_p) |
c906108c | 2099 | { |
8621d6a9 DJ |
2100 | int from_tty = * (int *) from_tty_p; |
2101 | ||
23860348 | 2102 | immediate_quit++; /* Allow user to interrupt it. */ |
c906108c SS |
2103 | |
2104 | /* Ack any packet which the remote side has already sent. */ | |
2cd58942 | 2105 | serial_write (remote_desc, "+", 1); |
c906108c SS |
2106 | |
2107 | /* Let the stub know that we want it to return the thread. */ | |
2108 | set_thread (-1, 0); | |
2109 | ||
39f77062 | 2110 | inferior_ptid = remote_current_thread (inferior_ptid); |
c906108c | 2111 | |
23860348 | 2112 | get_offsets (); /* Get text, data & bss offsets. */ |
c906108c | 2113 | |
23860348 | 2114 | putpkt ("?"); /* Initiate a query from remote machine. */ |
8edbea78 | 2115 | immediate_quit--; |
c906108c | 2116 | |
8621d6a9 | 2117 | start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
c906108c SS |
2118 | } |
2119 | ||
2120 | /* Open a connection to a remote debugger. | |
2121 | NAME is the filename used for communication. */ | |
2122 | ||
2123 | static void | |
fba45db2 | 2124 | remote_open (char *name, int from_tty) |
c906108c | 2125 | { |
92d1e331 | 2126 | remote_open_1 (name, from_tty, &remote_ops, 0, 0); |
c906108c SS |
2127 | } |
2128 | ||
23860348 | 2129 | /* Just like remote_open, but with asynchronous support. */ |
43ff13b4 | 2130 | static void |
fba45db2 | 2131 | remote_async_open (char *name, int from_tty) |
43ff13b4 | 2132 | { |
92d1e331 | 2133 | remote_open_1 (name, from_tty, &remote_async_ops, 0, 1); |
43ff13b4 JM |
2134 | } |
2135 | ||
c906108c SS |
2136 | /* Open a connection to a remote debugger using the extended |
2137 | remote gdb protocol. NAME is the filename used for communication. */ | |
2138 | ||
2139 | static void | |
fba45db2 | 2140 | extended_remote_open (char *name, int from_tty) |
c906108c | 2141 | { |
92d1e331 DJ |
2142 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */, |
2143 | 0 /* async_p */); | |
c906108c SS |
2144 | } |
2145 | ||
23860348 | 2146 | /* Just like extended_remote_open, but with asynchronous support. */ |
43ff13b4 | 2147 | static void |
fba45db2 | 2148 | extended_remote_async_open (char *name, int from_tty) |
43ff13b4 | 2149 | { |
92d1e331 DJ |
2150 | remote_open_1 (name, from_tty, &extended_async_remote_ops, |
2151 | 1 /*extended_p */, 1 /* async_p */); | |
43ff13b4 JM |
2152 | } |
2153 | ||
c906108c SS |
2154 | /* Generic code for opening a connection to a remote target. */ |
2155 | ||
d471ea57 AC |
2156 | static void |
2157 | init_all_packet_configs (void) | |
2158 | { | |
2159 | int i; | |
444abaca DJ |
2160 | for (i = 0; i < PACKET_MAX; i++) |
2161 | update_packet_config (&remote_protocol_packets[i]); | |
d471ea57 AC |
2162 | } |
2163 | ||
23860348 | 2164 | /* Symbol look-up. */ |
dc8acb97 MS |
2165 | |
2166 | static void | |
2167 | remote_check_symbols (struct objfile *objfile) | |
2168 | { | |
d01949b6 | 2169 | struct remote_state *rs = get_remote_state (); |
dc8acb97 MS |
2170 | char *msg, *reply, *tmp; |
2171 | struct minimal_symbol *sym; | |
2172 | int end; | |
2173 | ||
444abaca | 2174 | if (remote_protocol_packets[PACKET_qSymbol].support == PACKET_DISABLE) |
dc8acb97 MS |
2175 | return; |
2176 | ||
6d820c5c DJ |
2177 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
2178 | because we need both at the same time. */ | |
ea9c271d | 2179 | msg = alloca (get_remote_packet_size ()); |
6d820c5c | 2180 | |
23860348 | 2181 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
2182 | |
2183 | putpkt ("qSymbol::"); | |
6d820c5c DJ |
2184 | getpkt (&rs->buf, &rs->buf_size, 0); |
2185 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSymbol]); | |
2e9f7625 | 2186 | reply = rs->buf; |
dc8acb97 MS |
2187 | |
2188 | while (strncmp (reply, "qSymbol:", 8) == 0) | |
2189 | { | |
2190 | tmp = &reply[8]; | |
cfd77fa1 | 2191 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
2192 | msg[end] = '\0'; |
2193 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
2194 | if (sym == NULL) | |
ea9c271d | 2195 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
dc8acb97 | 2196 | else |
ea9c271d | 2197 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", |
ecbc58df WZ |
2198 | paddr_nz (SYMBOL_VALUE_ADDRESS (sym)), |
2199 | &reply[8]); | |
dc8acb97 | 2200 | putpkt (msg); |
6d820c5c | 2201 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2202 | reply = rs->buf; |
dc8acb97 MS |
2203 | } |
2204 | } | |
2205 | ||
9db8d71f DJ |
2206 | static struct serial * |
2207 | remote_serial_open (char *name) | |
2208 | { | |
2209 | static int udp_warning = 0; | |
2210 | ||
2211 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
2212 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
2213 | serial connection is reliable and not the serial connection promising | |
2214 | to be. */ | |
2215 | if (!udp_warning && strncmp (name, "udp:", 4) == 0) | |
2216 | { | |
8a3fe4f8 AC |
2217 | warning (_("\ |
2218 | The remote protocol may be unreliable over UDP.\n\ | |
2219 | Some events may be lost, rendering further debugging impossible.")); | |
9db8d71f DJ |
2220 | udp_warning = 1; |
2221 | } | |
2222 | ||
2223 | return serial_open (name); | |
2224 | } | |
2225 | ||
be2a5f71 DJ |
2226 | /* This type describes each known response to the qSupported |
2227 | packet. */ | |
2228 | struct protocol_feature | |
2229 | { | |
2230 | /* The name of this protocol feature. */ | |
2231 | const char *name; | |
2232 | ||
2233 | /* The default for this protocol feature. */ | |
2234 | enum packet_support default_support; | |
2235 | ||
2236 | /* The function to call when this feature is reported, or after | |
2237 | qSupported processing if the feature is not supported. | |
2238 | The first argument points to this structure. The second | |
2239 | argument indicates whether the packet requested support be | |
2240 | enabled, disabled, or probed (or the default, if this function | |
2241 | is being called at the end of processing and this feature was | |
2242 | not reported). The third argument may be NULL; if not NULL, it | |
2243 | is a NUL-terminated string taken from the packet following | |
2244 | this feature's name and an equals sign. */ | |
2245 | void (*func) (const struct protocol_feature *, enum packet_support, | |
2246 | const char *); | |
2247 | ||
2248 | /* The corresponding packet for this feature. Only used if | |
2249 | FUNC is remote_supported_packet. */ | |
2250 | int packet; | |
2251 | }; | |
2252 | ||
be2a5f71 DJ |
2253 | static void |
2254 | remote_supported_packet (const struct protocol_feature *feature, | |
2255 | enum packet_support support, | |
2256 | const char *argument) | |
2257 | { | |
2258 | if (argument) | |
2259 | { | |
2260 | warning (_("Remote qSupported response supplied an unexpected value for" | |
2261 | " \"%s\"."), feature->name); | |
2262 | return; | |
2263 | } | |
2264 | ||
2265 | if (remote_protocol_packets[feature->packet].support | |
2266 | == PACKET_SUPPORT_UNKNOWN) | |
2267 | remote_protocol_packets[feature->packet].support = support; | |
2268 | } | |
be2a5f71 DJ |
2269 | |
2270 | static void | |
2271 | remote_packet_size (const struct protocol_feature *feature, | |
2272 | enum packet_support support, const char *value) | |
2273 | { | |
2274 | struct remote_state *rs = get_remote_state (); | |
2275 | ||
2276 | int packet_size; | |
2277 | char *value_end; | |
2278 | ||
2279 | if (support != PACKET_ENABLE) | |
2280 | return; | |
2281 | ||
2282 | if (value == NULL || *value == '\0') | |
2283 | { | |
2284 | warning (_("Remote target reported \"%s\" without a size."), | |
2285 | feature->name); | |
2286 | return; | |
2287 | } | |
2288 | ||
2289 | errno = 0; | |
2290 | packet_size = strtol (value, &value_end, 16); | |
2291 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
2292 | { | |
2293 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
2294 | feature->name, value); | |
2295 | return; | |
2296 | } | |
2297 | ||
2298 | if (packet_size > MAX_REMOTE_PACKET_SIZE) | |
2299 | { | |
2300 | warning (_("limiting remote suggested packet size (%d bytes) to %d"), | |
2301 | packet_size, MAX_REMOTE_PACKET_SIZE); | |
2302 | packet_size = MAX_REMOTE_PACKET_SIZE; | |
2303 | } | |
2304 | ||
2305 | /* Record the new maximum packet size. */ | |
2306 | rs->explicit_packet_size = packet_size; | |
2307 | } | |
2308 | ||
2309 | static struct protocol_feature remote_protocol_features[] = { | |
0876f84a | 2310 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 2311 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 2312 | PACKET_qXfer_auxv }, |
23181151 DJ |
2313 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
2314 | PACKET_qXfer_features }, | |
fd79ecee | 2315 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 2316 | PACKET_qXfer_memory_map }, |
4de6483e UW |
2317 | { "qXfer:spu:read", PACKET_DISABLE, remote_supported_packet, |
2318 | PACKET_qXfer_spu_read }, | |
2319 | { "qXfer:spu:write", PACKET_DISABLE, remote_supported_packet, | |
2320 | PACKET_qXfer_spu_write }, | |
89be2091 DJ |
2321 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
2322 | PACKET_QPassSignals }, | |
be2a5f71 DJ |
2323 | }; |
2324 | ||
2325 | static void | |
2326 | remote_query_supported (void) | |
2327 | { | |
2328 | struct remote_state *rs = get_remote_state (); | |
2329 | char *next; | |
2330 | int i; | |
2331 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
2332 | ||
2333 | /* The packet support flags are handled differently for this packet | |
2334 | than for most others. We treat an error, a disabled packet, and | |
2335 | an empty response identically: any features which must be reported | |
2336 | to be used will be automatically disabled. An empty buffer | |
2337 | accomplishes this, since that is also the representation for a list | |
2338 | containing no features. */ | |
2339 | ||
2340 | rs->buf[0] = 0; | |
2341 | if (remote_protocol_packets[PACKET_qSupported].support != PACKET_DISABLE) | |
2342 | { | |
2343 | putpkt ("qSupported"); | |
2344 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2345 | ||
2346 | /* If an error occured, warn, but do not return - just reset the | |
2347 | buffer to empty and go on to disable features. */ | |
2348 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
2349 | == PACKET_ERROR) | |
2350 | { | |
2351 | warning (_("Remote failure reply: %s"), rs->buf); | |
2352 | rs->buf[0] = 0; | |
2353 | } | |
2354 | } | |
2355 | ||
2356 | memset (seen, 0, sizeof (seen)); | |
2357 | ||
2358 | next = rs->buf; | |
2359 | while (*next) | |
2360 | { | |
2361 | enum packet_support is_supported; | |
2362 | char *p, *end, *name_end, *value; | |
2363 | ||
2364 | /* First separate out this item from the rest of the packet. If | |
2365 | there's another item after this, we overwrite the separator | |
2366 | (terminated strings are much easier to work with). */ | |
2367 | p = next; | |
2368 | end = strchr (p, ';'); | |
2369 | if (end == NULL) | |
2370 | { | |
2371 | end = p + strlen (p); | |
2372 | next = end; | |
2373 | } | |
2374 | else | |
2375 | { | |
89be2091 DJ |
2376 | *end = '\0'; |
2377 | next = end + 1; | |
2378 | ||
be2a5f71 DJ |
2379 | if (end == p) |
2380 | { | |
2381 | warning (_("empty item in \"qSupported\" response")); | |
2382 | continue; | |
2383 | } | |
be2a5f71 DJ |
2384 | } |
2385 | ||
2386 | name_end = strchr (p, '='); | |
2387 | if (name_end) | |
2388 | { | |
2389 | /* This is a name=value entry. */ | |
2390 | is_supported = PACKET_ENABLE; | |
2391 | value = name_end + 1; | |
2392 | *name_end = '\0'; | |
2393 | } | |
2394 | else | |
2395 | { | |
2396 | value = NULL; | |
2397 | switch (end[-1]) | |
2398 | { | |
2399 | case '+': | |
2400 | is_supported = PACKET_ENABLE; | |
2401 | break; | |
2402 | ||
2403 | case '-': | |
2404 | is_supported = PACKET_DISABLE; | |
2405 | break; | |
2406 | ||
2407 | case '?': | |
2408 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
2409 | break; | |
2410 | ||
2411 | default: | |
2412 | warning (_("unrecognized item \"%s\" in \"qSupported\" response"), p); | |
2413 | continue; | |
2414 | } | |
2415 | end[-1] = '\0'; | |
2416 | } | |
2417 | ||
2418 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
2419 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
2420 | { | |
2421 | const struct protocol_feature *feature; | |
2422 | ||
2423 | seen[i] = 1; | |
2424 | feature = &remote_protocol_features[i]; | |
2425 | feature->func (feature, is_supported, value); | |
2426 | break; | |
2427 | } | |
2428 | } | |
2429 | ||
2430 | /* If we increased the packet size, make sure to increase the global | |
2431 | buffer size also. We delay this until after parsing the entire | |
2432 | qSupported packet, because this is the same buffer we were | |
2433 | parsing. */ | |
2434 | if (rs->buf_size < rs->explicit_packet_size) | |
2435 | { | |
2436 | rs->buf_size = rs->explicit_packet_size; | |
2437 | rs->buf = xrealloc (rs->buf, rs->buf_size); | |
2438 | } | |
2439 | ||
2440 | /* Handle the defaults for unmentioned features. */ | |
2441 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
2442 | if (!seen[i]) | |
2443 | { | |
2444 | const struct protocol_feature *feature; | |
2445 | ||
2446 | feature = &remote_protocol_features[i]; | |
2447 | feature->func (feature, feature->default_support, NULL); | |
2448 | } | |
2449 | } | |
2450 | ||
2451 | ||
c906108c | 2452 | static void |
fba45db2 | 2453 | remote_open_1 (char *name, int from_tty, struct target_ops *target, |
92d1e331 | 2454 | int extended_p, int async_p) |
c906108c | 2455 | { |
d01949b6 | 2456 | struct remote_state *rs = get_remote_state (); |
c906108c | 2457 | if (name == 0) |
8a3fe4f8 | 2458 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 2459 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 2460 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 2461 | |
23860348 | 2462 | /* See FIXME above. */ |
92d1e331 DJ |
2463 | if (!async_p) |
2464 | wait_forever_enabled_p = 1; | |
6426a772 | 2465 | |
c906108c SS |
2466 | target_preopen (from_tty); |
2467 | ||
2468 | unpush_target (target); | |
2469 | ||
89be2091 DJ |
2470 | /* Make sure we send the passed signals list the next time we resume. */ |
2471 | xfree (last_pass_packet); | |
2472 | last_pass_packet = NULL; | |
2473 | ||
ad9a8f3f | 2474 | remote_fileio_reset (); |
1dd41f16 NS |
2475 | reopen_exec_file (); |
2476 | reread_symbols (); | |
2477 | ||
9db8d71f | 2478 | remote_desc = remote_serial_open (name); |
c906108c SS |
2479 | if (!remote_desc) |
2480 | perror_with_name (name); | |
2481 | ||
2482 | if (baud_rate != -1) | |
2483 | { | |
2cd58942 | 2484 | if (serial_setbaudrate (remote_desc, baud_rate)) |
c906108c | 2485 | { |
9b74d5d3 KB |
2486 | /* The requested speed could not be set. Error out to |
2487 | top level after closing remote_desc. Take care to | |
2488 | set remote_desc to NULL to avoid closing remote_desc | |
2489 | more than once. */ | |
2cd58942 | 2490 | serial_close (remote_desc); |
9b74d5d3 | 2491 | remote_desc = NULL; |
c906108c SS |
2492 | perror_with_name (name); |
2493 | } | |
2494 | } | |
2495 | ||
2cd58942 | 2496 | serial_raw (remote_desc); |
c906108c SS |
2497 | |
2498 | /* If there is something sitting in the buffer we might take it as a | |
2499 | response to a command, which would be bad. */ | |
2cd58942 | 2500 | serial_flush_input (remote_desc); |
c906108c SS |
2501 | |
2502 | if (from_tty) | |
2503 | { | |
2504 | puts_filtered ("Remote debugging using "); | |
2505 | puts_filtered (name); | |
2506 | puts_filtered ("\n"); | |
2507 | } | |
23860348 | 2508 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 2509 | |
be2a5f71 DJ |
2510 | /* Reset the target state; these things will be queried either by |
2511 | remote_query_supported or as they are needed. */ | |
d471ea57 | 2512 | init_all_packet_configs (); |
be2a5f71 | 2513 | rs->explicit_packet_size = 0; |
802188a7 | 2514 | |
c5aa993b | 2515 | general_thread = -2; |
cce74817 | 2516 | continue_thread = -2; |
c906108c | 2517 | |
9d1f7ab2 MS |
2518 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
2519 | use_threadinfo_query = 1; | |
2520 | use_threadextra_query = 1; | |
2521 | ||
be2a5f71 DJ |
2522 | /* The first packet we send to the target is the optional "supported |
2523 | packets" request. If the target can answer this, it will tell us | |
2524 | which later probes to skip. */ | |
2525 | remote_query_supported (); | |
2526 | ||
424163ea DJ |
2527 | /* Next, if the target can specify a description, read it. We do |
2528 | this before anything involving memory or registers. */ | |
2529 | target_find_description (); | |
2530 | ||
c906108c SS |
2531 | /* Without this, some commands which require an active target (such |
2532 | as kill) won't work. This variable serves (at least) double duty | |
2533 | as both the pid of the target process (if it has such), and as a | |
2534 | flag indicating that a target is active. These functions should | |
2535 | be split out into seperate variables, especially since GDB will | |
2536 | someday have a notion of debugging several processes. */ | |
2537 | ||
39f77062 | 2538 | inferior_ptid = pid_to_ptid (MAGIC_NULL_PID); |
92d1e331 DJ |
2539 | |
2540 | if (async_p) | |
2541 | { | |
23860348 | 2542 | /* With this target we start out by owning the terminal. */ |
92d1e331 DJ |
2543 | remote_async_terminal_ours_p = 1; |
2544 | ||
2545 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
2546 | assumed that the target is already ready and able to respond to | |
2547 | requests. Unfortunately remote_start_remote() eventually calls | |
2548 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets | |
2549 | around this. Eventually a mechanism that allows | |
2550 | wait_for_inferior() to expect/get timeouts will be | |
23860348 | 2551 | implemented. */ |
92d1e331 DJ |
2552 | wait_forever_enabled_p = 0; |
2553 | } | |
2554 | ||
23860348 | 2555 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 2556 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 2557 | |
36918e70 | 2558 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
2559 | target (we'd otherwise be in an inconsistent state) and then |
2560 | propogate the error on up the exception chain. This ensures that | |
2561 | the caller doesn't stumble along blindly assuming that the | |
2562 | function succeeded. The CLI doesn't have this problem but other | |
2563 | UI's, such as MI do. | |
36918e70 AC |
2564 | |
2565 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
2566 | this function should return an error indication letting the | |
ce2826aa | 2567 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
2568 | ``target remote'' is directly wired to this function making that |
2569 | impossible. On a positive note, the CLI side of this problem has | |
2570 | been fixed - the function set_cmd_context() makes it possible for | |
2571 | all the ``target ....'' commands to share a common callback | |
2572 | function. See cli-dump.c. */ | |
109c3e39 AC |
2573 | { |
2574 | struct gdb_exception ex | |
8621d6a9 DJ |
2575 | = catch_exception (uiout, remote_start_remote, &from_tty, |
2576 | RETURN_MASK_ALL); | |
109c3e39 AC |
2577 | if (ex.reason < 0) |
2578 | { | |
2579 | pop_target (); | |
2580 | if (async_p) | |
2581 | wait_forever_enabled_p = 1; | |
2582 | throw_exception (ex); | |
2583 | } | |
2584 | } | |
c906108c | 2585 | |
92d1e331 DJ |
2586 | if (async_p) |
2587 | wait_forever_enabled_p = 1; | |
6426a772 JM |
2588 | |
2589 | if (extended_p) | |
43ff13b4 | 2590 | { |
6240bebf | 2591 | /* Tell the remote that we are using the extended protocol. */ |
6426a772 | 2592 | putpkt ("!"); |
6d820c5c | 2593 | getpkt (&rs->buf, &rs->buf_size, 0); |
43ff13b4 | 2594 | } |
a77053c2 | 2595 | |
23860348 | 2596 | if (exec_bfd) /* No use without an exec file. */ |
9353355f | 2597 | remote_check_symbols (symfile_objfile); |
43ff13b4 JM |
2598 | } |
2599 | ||
c906108c SS |
2600 | /* This takes a program previously attached to and detaches it. After |
2601 | this is done, GDB can be used to debug some other program. We | |
2602 | better not have left any breakpoints in the target program or it'll | |
2603 | die when it hits one. */ | |
2604 | ||
2605 | static void | |
fba45db2 | 2606 | remote_detach (char *args, int from_tty) |
c906108c | 2607 | { |
d01949b6 | 2608 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2609 | |
2610 | if (args) | |
8a3fe4f8 | 2611 | error (_("Argument given to \"detach\" when remotely debugging.")); |
c906108c SS |
2612 | |
2613 | /* Tell the remote target to detach. */ | |
6d820c5c | 2614 | strcpy (rs->buf, "D"); |
4ddda9b5 PA |
2615 | putpkt (rs->buf); |
2616 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2617 | ||
2618 | if (rs->buf[0] == 'E') | |
2619 | error (_("Can't detach process.")); | |
c906108c | 2620 | |
23860348 | 2621 | /* Unregister the file descriptor from the event loop. */ |
6ad8ae5c DJ |
2622 | if (target_is_async_p ()) |
2623 | serial_async (remote_desc, NULL, 0); | |
2624 | ||
cca728d0 | 2625 | target_mourn_inferior (); |
c906108c SS |
2626 | if (from_tty) |
2627 | puts_filtered ("Ending remote debugging.\n"); | |
2628 | } | |
2629 | ||
6ad8ae5c DJ |
2630 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
2631 | ||
43ff13b4 | 2632 | static void |
597320e7 | 2633 | remote_disconnect (struct target_ops *target, char *args, int from_tty) |
43ff13b4 | 2634 | { |
43ff13b4 | 2635 | if (args) |
8a3fe4f8 | 2636 | error (_("Argument given to \"detach\" when remotely debugging.")); |
43ff13b4 | 2637 | |
23860348 | 2638 | /* Unregister the file descriptor from the event loop. */ |
ed9a39eb | 2639 | if (target_is_async_p ()) |
2cd58942 | 2640 | serial_async (remote_desc, NULL, 0); |
43ff13b4 | 2641 | |
cca728d0 | 2642 | target_mourn_inferior (); |
43ff13b4 JM |
2643 | if (from_tty) |
2644 | puts_filtered ("Ending remote debugging.\n"); | |
2645 | } | |
2646 | ||
c906108c SS |
2647 | /* Convert hex digit A to a number. */ |
2648 | ||
30559e10 | 2649 | static int |
fba45db2 | 2650 | fromhex (int a) |
c906108c SS |
2651 | { |
2652 | if (a >= '0' && a <= '9') | |
2653 | return a - '0'; | |
2654 | else if (a >= 'a' && a <= 'f') | |
2655 | return a - 'a' + 10; | |
2656 | else if (a >= 'A' && a <= 'F') | |
2657 | return a - 'A' + 10; | |
c5aa993b | 2658 | else |
8a3fe4f8 | 2659 | error (_("Reply contains invalid hex digit %d"), a); |
c906108c SS |
2660 | } |
2661 | ||
30559e10 | 2662 | static int |
cfd77fa1 | 2663 | hex2bin (const char *hex, gdb_byte *bin, int count) |
30559e10 MS |
2664 | { |
2665 | int i; | |
2666 | ||
30559e10 MS |
2667 | for (i = 0; i < count; i++) |
2668 | { | |
2669 | if (hex[0] == 0 || hex[1] == 0) | |
2670 | { | |
2671 | /* Hex string is short, or of uneven length. | |
23860348 | 2672 | Return the count that has been converted so far. */ |
30559e10 MS |
2673 | return i; |
2674 | } | |
2675 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); | |
2676 | hex += 2; | |
2677 | } | |
2678 | return i; | |
2679 | } | |
2680 | ||
c906108c SS |
2681 | /* Convert number NIB to a hex digit. */ |
2682 | ||
2683 | static int | |
fba45db2 | 2684 | tohex (int nib) |
c906108c SS |
2685 | { |
2686 | if (nib < 10) | |
c5aa993b | 2687 | return '0' + nib; |
c906108c | 2688 | else |
c5aa993b | 2689 | return 'a' + nib - 10; |
c906108c | 2690 | } |
30559e10 MS |
2691 | |
2692 | static int | |
cfd77fa1 | 2693 | bin2hex (const gdb_byte *bin, char *hex, int count) |
30559e10 MS |
2694 | { |
2695 | int i; | |
23860348 | 2696 | /* May use a length, or a nul-terminated string as input. */ |
30559e10 | 2697 | if (count == 0) |
cfd77fa1 | 2698 | count = strlen ((char *) bin); |
30559e10 MS |
2699 | |
2700 | for (i = 0; i < count; i++) | |
2701 | { | |
2702 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
2703 | *hex++ = tohex (*bin++ & 0xf); | |
2704 | } | |
2705 | *hex = 0; | |
2706 | return i; | |
2707 | } | |
c906108c | 2708 | \f |
506fb367 DJ |
2709 | /* Check for the availability of vCont. This function should also check |
2710 | the response. */ | |
c906108c SS |
2711 | |
2712 | static void | |
6d820c5c | 2713 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 2714 | { |
2e9f7625 | 2715 | char *buf; |
6d820c5c | 2716 | |
2e9f7625 DJ |
2717 | strcpy (rs->buf, "vCont?"); |
2718 | putpkt (rs->buf); | |
6d820c5c | 2719 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2720 | buf = rs->buf; |
c906108c | 2721 | |
506fb367 DJ |
2722 | /* Make sure that the features we assume are supported. */ |
2723 | if (strncmp (buf, "vCont", 5) == 0) | |
2724 | { | |
2725 | char *p = &buf[5]; | |
2726 | int support_s, support_S, support_c, support_C; | |
2727 | ||
2728 | support_s = 0; | |
2729 | support_S = 0; | |
2730 | support_c = 0; | |
2731 | support_C = 0; | |
2732 | while (p && *p == ';') | |
2733 | { | |
2734 | p++; | |
2735 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2736 | support_s = 1; | |
2737 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2738 | support_S = 1; | |
2739 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2740 | support_c = 1; | |
2741 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2742 | support_C = 1; | |
2743 | ||
2744 | p = strchr (p, ';'); | |
2745 | } | |
c906108c | 2746 | |
506fb367 DJ |
2747 | /* If s, S, c, and C are not all supported, we can't use vCont. Clearing |
2748 | BUF will make packet_ok disable the packet. */ | |
2749 | if (!support_s || !support_S || !support_c || !support_C) | |
2750 | buf[0] = 0; | |
2751 | } | |
c906108c | 2752 | |
444abaca | 2753 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 2754 | } |
c906108c | 2755 | |
506fb367 DJ |
2756 | /* Resume the remote inferior by using a "vCont" packet. The thread |
2757 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
2758 | resumed thread should be single-stepped and/or signalled. If PTID's | |
2759 | PID is -1, then all threads are resumed; the thread to be stepped and/or | |
2760 | signalled is given in the global INFERIOR_PTID. This function returns | |
2761 | non-zero iff it resumes the inferior. | |
44eaed12 | 2762 | |
506fb367 DJ |
2763 | This function issues a strict subset of all possible vCont commands at the |
2764 | moment. */ | |
44eaed12 | 2765 | |
506fb367 DJ |
2766 | static int |
2767 | remote_vcont_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
2768 | { | |
2769 | struct remote_state *rs = get_remote_state (); | |
2770 | int pid = PIDGET (ptid); | |
2963ee1d | 2771 | char *buf = NULL, *outbuf; |
506fb367 | 2772 | struct cleanup *old_cleanup; |
44eaed12 | 2773 | |
444abaca | 2774 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 2775 | remote_vcont_probe (rs); |
44eaed12 | 2776 | |
444abaca | 2777 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_DISABLE) |
6d820c5c | 2778 | return 0; |
44eaed12 | 2779 | |
506fb367 DJ |
2780 | /* If we could generate a wider range of packets, we'd have to worry |
2781 | about overflowing BUF. Should there be a generic | |
2782 | "multi-part-packet" packet? */ | |
2783 | ||
2784 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) | |
c906108c | 2785 | { |
506fb367 DJ |
2786 | /* MAGIC_NULL_PTID means that we don't have any active threads, so we |
2787 | don't have any PID numbers the inferior will understand. Make sure | |
2788 | to only send forms that do not specify a PID. */ | |
2789 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d | 2790 | outbuf = xstrprintf ("vCont;S%02x", siggnal); |
506fb367 | 2791 | else if (step) |
2963ee1d | 2792 | outbuf = xstrprintf ("vCont;s"); |
506fb367 | 2793 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d | 2794 | outbuf = xstrprintf ("vCont;C%02x", siggnal); |
506fb367 | 2795 | else |
2963ee1d | 2796 | outbuf = xstrprintf ("vCont;c"); |
506fb367 DJ |
2797 | } |
2798 | else if (pid == -1) | |
2799 | { | |
2800 | /* Resume all threads, with preference for INFERIOR_PTID. */ | |
2801 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d DJ |
2802 | outbuf = xstrprintf ("vCont;S%02x:%x;c", siggnal, |
2803 | PIDGET (inferior_ptid)); | |
506fb367 | 2804 | else if (step) |
2963ee1d | 2805 | outbuf = xstrprintf ("vCont;s:%x;c", PIDGET (inferior_ptid)); |
506fb367 | 2806 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d DJ |
2807 | outbuf = xstrprintf ("vCont;C%02x:%x;c", siggnal, |
2808 | PIDGET (inferior_ptid)); | |
506fb367 | 2809 | else |
2963ee1d | 2810 | outbuf = xstrprintf ("vCont;c"); |
c906108c SS |
2811 | } |
2812 | else | |
506fb367 DJ |
2813 | { |
2814 | /* Scheduler locking; resume only PTID. */ | |
2815 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d | 2816 | outbuf = xstrprintf ("vCont;S%02x:%x", siggnal, pid); |
506fb367 | 2817 | else if (step) |
2963ee1d | 2818 | outbuf = xstrprintf ("vCont;s:%x", pid); |
506fb367 | 2819 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d | 2820 | outbuf = xstrprintf ("vCont;C%02x:%x", siggnal, pid); |
506fb367 | 2821 | else |
2963ee1d | 2822 | outbuf = xstrprintf ("vCont;c:%x", pid); |
506fb367 | 2823 | } |
c906108c | 2824 | |
ea9c271d | 2825 | gdb_assert (outbuf && strlen (outbuf) < get_remote_packet_size ()); |
6d820c5c | 2826 | old_cleanup = make_cleanup (xfree, outbuf); |
2963ee1d DJ |
2827 | |
2828 | putpkt (outbuf); | |
506fb367 DJ |
2829 | |
2830 | do_cleanups (old_cleanup); | |
2831 | ||
2832 | return 1; | |
c906108c | 2833 | } |
43ff13b4 | 2834 | |
506fb367 DJ |
2835 | /* Tell the remote machine to resume. */ |
2836 | ||
2837 | static enum target_signal last_sent_signal = TARGET_SIGNAL_0; | |
2838 | ||
2839 | static int last_sent_step; | |
2840 | ||
43ff13b4 | 2841 | static void |
506fb367 | 2842 | remote_resume (ptid_t ptid, int step, enum target_signal siggnal) |
43ff13b4 | 2843 | { |
d01949b6 | 2844 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 2845 | char *buf; |
39f77062 | 2846 | int pid = PIDGET (ptid); |
43ff13b4 | 2847 | |
43ff13b4 JM |
2848 | last_sent_signal = siggnal; |
2849 | last_sent_step = step; | |
2850 | ||
2851 | /* A hook for when we need to do something at the last moment before | |
2852 | resumption. */ | |
9a4105ab AC |
2853 | if (deprecated_target_resume_hook) |
2854 | (*deprecated_target_resume_hook) (); | |
43ff13b4 | 2855 | |
89be2091 DJ |
2856 | /* Update the inferior on signals to silently pass, if they've changed. */ |
2857 | remote_pass_signals (); | |
2858 | ||
506fb367 DJ |
2859 | /* The vCont packet doesn't need to specify threads via Hc. */ |
2860 | if (remote_vcont_resume (ptid, step, siggnal)) | |
2861 | return; | |
2862 | ||
2863 | /* All other supported resume packets do use Hc, so call set_thread. */ | |
2864 | if (pid == -1) | |
23860348 | 2865 | set_thread (0, 0); /* Run any thread. */ |
506fb367 | 2866 | else |
23860348 | 2867 | set_thread (pid, 0); /* Run this thread. */ |
506fb367 | 2868 | |
2e9f7625 | 2869 | buf = rs->buf; |
43ff13b4 JM |
2870 | if (siggnal != TARGET_SIGNAL_0) |
2871 | { | |
2872 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 2873 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 2874 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
2875 | buf[3] = '\0'; |
2876 | } | |
2877 | else | |
c5aa993b | 2878 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 2879 | |
44eaed12 | 2880 | putpkt (buf); |
506fb367 DJ |
2881 | } |
2882 | ||
23860348 | 2883 | /* Same as remote_resume, but with async support. */ |
506fb367 DJ |
2884 | static void |
2885 | remote_async_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
2886 | { | |
2887 | remote_resume (ptid, step, siggnal); | |
43ff13b4 | 2888 | |
2acceee2 JM |
2889 | /* We are about to start executing the inferior, let's register it |
2890 | with the event loop. NOTE: this is the one place where all the | |
2891 | execution commands end up. We could alternatively do this in each | |
23860348 | 2892 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
2893 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
2894 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 2895 | NOT asynchronously. */ |
362646f5 | 2896 | if (target_can_async_p ()) |
2acceee2 | 2897 | target_async (inferior_event_handler, 0); |
23860348 | 2898 | /* Tell the world that the target is now executing. */ |
2acceee2 JM |
2899 | /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set |
2900 | this? Instead, should the client of target just assume (for | |
2901 | async targets) that the target is going to start executing? Is | |
2902 | this information already found in the continuation block? */ | |
ed9a39eb | 2903 | if (target_is_async_p ()) |
2acceee2 | 2904 | target_executing = 1; |
43ff13b4 | 2905 | } |
c906108c | 2906 | \f |
43ff13b4 JM |
2907 | |
2908 | /* Set up the signal handler for SIGINT, while the target is | |
23860348 | 2909 | executing, ovewriting the 'regular' SIGINT signal handler. */ |
43ff13b4 | 2910 | static void |
fba45db2 | 2911 | initialize_sigint_signal_handler (void) |
43ff13b4 | 2912 | { |
c5aa993b | 2913 | sigint_remote_token = |
43ff13b4 JM |
2914 | create_async_signal_handler (async_remote_interrupt, NULL); |
2915 | signal (SIGINT, handle_remote_sigint); | |
2916 | } | |
2917 | ||
23860348 | 2918 | /* Signal handler for SIGINT, while the target is executing. */ |
43ff13b4 | 2919 | static void |
fba45db2 | 2920 | handle_remote_sigint (int sig) |
43ff13b4 JM |
2921 | { |
2922 | signal (sig, handle_remote_sigint_twice); | |
c5aa993b | 2923 | sigint_remote_twice_token = |
43ff13b4 JM |
2924 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
2925 | mark_async_signal_handler_wrapper (sigint_remote_token); | |
2926 | } | |
2927 | ||
2928 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
2929 | sent once. It will take effect the second time that the user sends | |
23860348 | 2930 | a ^C. */ |
43ff13b4 | 2931 | static void |
fba45db2 | 2932 | handle_remote_sigint_twice (int sig) |
43ff13b4 JM |
2933 | { |
2934 | signal (sig, handle_sigint); | |
c5aa993b | 2935 | sigint_remote_twice_token = |
2df3850c | 2936 | create_async_signal_handler (inferior_event_handler_wrapper, NULL); |
43ff13b4 JM |
2937 | mark_async_signal_handler_wrapper (sigint_remote_twice_token); |
2938 | } | |
2939 | ||
6426a772 | 2940 | /* Perform the real interruption of the target execution, in response |
23860348 | 2941 | to a ^C. */ |
c5aa993b | 2942 | static void |
fba45db2 | 2943 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
2944 | { |
2945 | if (remote_debug) | |
2946 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
2947 | ||
2948 | target_stop (); | |
2949 | } | |
2950 | ||
2951 | /* Perform interrupt, if the first attempt did not succeed. Just give | |
23860348 | 2952 | up on the target alltogether. */ |
2df3850c | 2953 | void |
fba45db2 | 2954 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 2955 | { |
2df3850c JM |
2956 | if (remote_debug) |
2957 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt_twice called\n"); | |
6426a772 | 2958 | /* Do something only if the target was not killed by the previous |
23860348 | 2959 | cntl-C. */ |
6426a772 JM |
2960 | if (target_executing) |
2961 | { | |
2962 | interrupt_query (); | |
2963 | signal (SIGINT, handle_remote_sigint); | |
2964 | } | |
43ff13b4 JM |
2965 | } |
2966 | ||
2967 | /* Reinstall the usual SIGINT handlers, after the target has | |
23860348 | 2968 | stopped. */ |
6426a772 JM |
2969 | static void |
2970 | cleanup_sigint_signal_handler (void *dummy) | |
43ff13b4 JM |
2971 | { |
2972 | signal (SIGINT, handle_sigint); | |
2973 | if (sigint_remote_twice_token) | |
d5d6fca5 | 2974 | delete_async_signal_handler (&sigint_remote_twice_token); |
43ff13b4 | 2975 | if (sigint_remote_token) |
d5d6fca5 | 2976 | delete_async_signal_handler (&sigint_remote_token); |
43ff13b4 JM |
2977 | } |
2978 | ||
c906108c SS |
2979 | /* Send ^C to target to halt it. Target will respond, and send us a |
2980 | packet. */ | |
507f3c78 | 2981 | static void (*ofunc) (int); |
c906108c | 2982 | |
7a292a7a SS |
2983 | /* The command line interface's stop routine. This function is installed |
2984 | as a signal handler for SIGINT. The first time a user requests a | |
2985 | stop, we call remote_stop to send a break or ^C. If there is no | |
2986 | response from the target (it didn't stop when the user requested it), | |
23860348 | 2987 | we ask the user if he'd like to detach from the target. */ |
c906108c | 2988 | static void |
fba45db2 | 2989 | remote_interrupt (int signo) |
c906108c | 2990 | { |
23860348 | 2991 | /* If this doesn't work, try more severe steps. */ |
7a292a7a SS |
2992 | signal (signo, remote_interrupt_twice); |
2993 | ||
2994 | if (remote_debug) | |
0f71a2f6 | 2995 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); |
7a292a7a SS |
2996 | |
2997 | target_stop (); | |
2998 | } | |
2999 | ||
3000 | /* The user typed ^C twice. */ | |
3001 | ||
3002 | static void | |
fba45db2 | 3003 | remote_interrupt_twice (int signo) |
7a292a7a SS |
3004 | { |
3005 | signal (signo, ofunc); | |
3006 | interrupt_query (); | |
c906108c SS |
3007 | signal (signo, remote_interrupt); |
3008 | } | |
7a292a7a SS |
3009 | |
3010 | /* This is the generic stop called via the target vector. When a target | |
3011 | interrupt is requested, either by the command line or the GUI, we | |
23860348 | 3012 | will eventually end up here. */ |
c906108c | 3013 | static void |
fba45db2 | 3014 | remote_stop (void) |
c906108c | 3015 | { |
7a292a7a SS |
3016 | /* Send a break or a ^C, depending on user preference. */ |
3017 | if (remote_debug) | |
0f71a2f6 | 3018 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 3019 | |
7a292a7a | 3020 | if (remote_break) |
2cd58942 | 3021 | serial_send_break (remote_desc); |
c906108c | 3022 | else |
2cd58942 | 3023 | serial_write (remote_desc, "\003", 1); |
c906108c SS |
3024 | } |
3025 | ||
3026 | /* Ask the user what to do when an interrupt is received. */ | |
3027 | ||
3028 | static void | |
fba45db2 | 3029 | interrupt_query (void) |
c906108c SS |
3030 | { |
3031 | target_terminal_ours (); | |
3032 | ||
3033 | if (query ("Interrupted while waiting for the program.\n\ | |
3034 | Give up (and stop debugging it)? ")) | |
3035 | { | |
3036 | target_mourn_inferior (); | |
315a522e | 3037 | deprecated_throw_reason (RETURN_QUIT); |
c906108c SS |
3038 | } |
3039 | ||
3040 | target_terminal_inferior (); | |
3041 | } | |
3042 | ||
6426a772 JM |
3043 | /* Enable/disable target terminal ownership. Most targets can use |
3044 | terminal groups to control terminal ownership. Remote targets are | |
3045 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 3046 | is required. */ |
6426a772 JM |
3047 | |
3048 | static void | |
3049 | remote_async_terminal_inferior (void) | |
3050 | { | |
3051 | /* FIXME: cagney/1999-09-27: Shouldn't need to test for | |
3052 | sync_execution here. This function should only be called when | |
3053 | GDB is resuming the inferior in the forground. A background | |
3054 | resume (``run&'') should leave GDB in control of the terminal and | |
23860348 | 3055 | consequently should not call this code. */ |
6426a772 JM |
3056 | if (!sync_execution) |
3057 | return; | |
3058 | /* FIXME: cagney/1999-09-27: Closely related to the above. Make | |
3059 | calls target_terminal_*() idenpotent. The event-loop GDB talking | |
3060 | to an asynchronous target with a synchronous command calls this | |
3061 | function from both event-top.c and infrun.c/infcmd.c. Once GDB | |
3062 | stops trying to transfer the terminal to the target when it | |
3063 | shouldn't this guard can go away. */ | |
3064 | if (!remote_async_terminal_ours_p) | |
3065 | return; | |
3066 | delete_file_handler (input_fd); | |
3067 | remote_async_terminal_ours_p = 0; | |
3068 | initialize_sigint_signal_handler (); | |
3069 | /* NOTE: At this point we could also register our selves as the | |
3070 | recipient of all input. Any characters typed could then be | |
23860348 | 3071 | passed on down to the target. */ |
6426a772 JM |
3072 | } |
3073 | ||
3074 | static void | |
3075 | remote_async_terminal_ours (void) | |
3076 | { | |
23860348 | 3077 | /* See FIXME in remote_async_terminal_inferior. */ |
6426a772 JM |
3078 | if (!sync_execution) |
3079 | return; | |
23860348 | 3080 | /* See FIXME in remote_async_terminal_inferior. */ |
6426a772 JM |
3081 | if (remote_async_terminal_ours_p) |
3082 | return; | |
3083 | cleanup_sigint_signal_handler (NULL); | |
3084 | add_file_handler (input_fd, stdin_event_handler, 0); | |
3085 | remote_async_terminal_ours_p = 1; | |
3086 | } | |
3087 | ||
c906108c SS |
3088 | /* If nonzero, ignore the next kill. */ |
3089 | ||
3090 | int kill_kludge; | |
3091 | ||
3092 | void | |
917317f4 | 3093 | remote_console_output (char *msg) |
c906108c SS |
3094 | { |
3095 | char *p; | |
3096 | ||
c5aa993b | 3097 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
3098 | { |
3099 | char tb[2]; | |
3100 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3101 | tb[0] = c; | |
3102 | tb[1] = 0; | |
43ff13b4 | 3103 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 3104 | } |
917317f4 | 3105 | gdb_flush (gdb_stdtarg); |
c906108c SS |
3106 | } |
3107 | ||
0f71a2f6 JM |
3108 | /* Wait until the remote machine stops, then return, |
3109 | storing status in STATUS just as `wait' would. | |
802188a7 | 3110 | Returns "pid", which in the case of a multi-threaded |
0f71a2f6 | 3111 | remote OS, is the thread-id. */ |
c906108c | 3112 | |
39f77062 KB |
3113 | static ptid_t |
3114 | remote_wait (ptid_t ptid, struct target_waitstatus *status) | |
c906108c | 3115 | { |
d01949b6 | 3116 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 3117 | struct remote_arch_state *rsa = get_remote_arch_state (); |
b2dd6311 | 3118 | ULONGEST thread_num = -1; |
3c3bea1c | 3119 | ULONGEST addr; |
c906108c SS |
3120 | |
3121 | status->kind = TARGET_WAITKIND_EXITED; | |
3122 | status->value.integer = 0; | |
3123 | ||
3124 | while (1) | |
3125 | { | |
2e9f7625 | 3126 | char *buf, *p; |
c906108c | 3127 | |
c906108c | 3128 | ofunc = signal (SIGINT, remote_interrupt); |
6d820c5c | 3129 | getpkt (&rs->buf, &rs->buf_size, 1); |
c906108c SS |
3130 | signal (SIGINT, ofunc); |
3131 | ||
2e9f7625 DJ |
3132 | buf = rs->buf; |
3133 | ||
c906108c | 3134 | /* This is a hook for when we need to do something (perhaps the |
c5aa993b | 3135 | collection of trace data) every time the target stops. */ |
9a4105ab AC |
3136 | if (deprecated_target_wait_loop_hook) |
3137 | (*deprecated_target_wait_loop_hook) (); | |
c906108c | 3138 | |
3c3bea1c GS |
3139 | remote_stopped_by_watchpoint_p = 0; |
3140 | ||
c906108c SS |
3141 | switch (buf[0]) |
3142 | { | |
23860348 | 3143 | case 'E': /* Error of some sort. */ |
8a3fe4f8 | 3144 | warning (_("Remote failure reply: %s"), buf); |
c906108c | 3145 | continue; |
23860348 | 3146 | case 'F': /* File-I/O request. */ |
449092f6 CV |
3147 | remote_fileio_request (buf); |
3148 | continue; | |
23860348 | 3149 | case 'T': /* Status with PC, SP, FP, ... */ |
c906108c | 3150 | { |
cfd77fa1 | 3151 | gdb_byte regs[MAX_REGISTER_SIZE]; |
c906108c | 3152 | |
23860348 | 3153 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
c906108c | 3154 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where |
c5aa993b JM |
3155 | ss = signal number |
3156 | n... = register number | |
3157 | r... = register contents | |
3158 | */ | |
c906108c SS |
3159 | p = &buf[3]; /* after Txx */ |
3160 | ||
3161 | while (*p) | |
3162 | { | |
cfd77fa1 | 3163 | char *p1; |
c906108c | 3164 | char *p_temp; |
97345198 | 3165 | int fieldsize; |
3c3bea1c GS |
3166 | LONGEST pnum = 0; |
3167 | ||
23860348 MS |
3168 | /* If the packet contains a register number save it in |
3169 | pnum and set p1 to point to the character following | |
3170 | it. Otherwise p1 points to p. */ | |
c906108c | 3171 | |
23860348 MS |
3172 | /* If this packet is an awatch packet, don't parse the |
3173 | 'a' as a register number. */ | |
3c3bea1c GS |
3174 | |
3175 | if (strncmp (p, "awatch", strlen("awatch")) != 0) | |
3176 | { | |
3177 | /* Read the ``P'' register number. */ | |
3178 | pnum = strtol (p, &p_temp, 16); | |
cfd77fa1 | 3179 | p1 = p_temp; |
3c3bea1c | 3180 | } |
802188a7 | 3181 | else |
3c3bea1c | 3182 | p1 = p; |
c906108c | 3183 | |
23860348 | 3184 | if (p1 == p) /* No register number present here. */ |
c906108c | 3185 | { |
cfd77fa1 | 3186 | p1 = strchr (p, ':'); |
c906108c | 3187 | if (p1 == NULL) |
670aa98f | 3188 | error (_("Malformed packet(a) (missing colon): %s\n\ |
8a3fe4f8 | 3189 | Packet: '%s'\n"), |
670aa98f | 3190 | p, buf); |
3c3bea1c | 3191 | if (strncmp (p, "thread", p1 - p) == 0) |
c906108c SS |
3192 | { |
3193 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
3194 | record_currthread (thread_num); | |
cfd77fa1 | 3195 | p = p_temp; |
c906108c | 3196 | } |
3c3bea1c GS |
3197 | else if ((strncmp (p, "watch", p1 - p) == 0) |
3198 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
3199 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
3200 | { | |
3201 | remote_stopped_by_watchpoint_p = 1; | |
3202 | p = unpack_varlen_hex (++p1, &addr); | |
3203 | remote_watch_data_address = (CORE_ADDR)addr; | |
3204 | } | |
3205 | else | |
3206 | { | |
3207 | /* Silently skip unknown optional info. */ | |
3208 | p_temp = strchr (p1 + 1, ';'); | |
3209 | if (p_temp) | |
cfd77fa1 | 3210 | p = p_temp; |
3c3bea1c | 3211 | } |
c906108c SS |
3212 | } |
3213 | else | |
3214 | { | |
ea9c271d | 3215 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); |
c906108c SS |
3216 | p = p1; |
3217 | ||
3218 | if (*p++ != ':') | |
8a3fe4f8 AC |
3219 | error (_("Malformed packet(b) (missing colon): %s\n\ |
3220 | Packet: '%s'\n"), | |
3fcb8548 | 3221 | p, buf); |
c906108c | 3222 | |
ad10f812 | 3223 | if (reg == NULL) |
8a3fe4f8 AC |
3224 | error (_("Remote sent bad register number %s: %s\n\ |
3225 | Packet: '%s'\n"), | |
3fcb8548 | 3226 | phex_nz (pnum, 0), p, buf); |
c906108c | 3227 | |
cfd77fa1 | 3228 | fieldsize = hex2bin (p, regs, |
2bc416ba | 3229 | register_size (current_gdbarch, |
23860348 | 3230 | reg->regnum)); |
97345198 | 3231 | p += 2 * fieldsize; |
2bc416ba | 3232 | if (fieldsize < register_size (current_gdbarch, |
23860348 | 3233 | reg->regnum)) |
8a3fe4f8 | 3234 | warning (_("Remote reply is too short: %s"), buf); |
2bc416ba | 3235 | regcache_raw_supply (current_regcache, |
23860348 | 3236 | reg->regnum, regs); |
c906108c SS |
3237 | } |
3238 | ||
3239 | if (*p++ != ';') | |
2bc416ba | 3240 | error (_("Remote register badly formatted: %s\nhere: %s"), |
23860348 | 3241 | buf, p); |
c906108c SS |
3242 | } |
3243 | } | |
3244 | /* fall through */ | |
23860348 | 3245 | case 'S': /* Old style status, just signal only. */ |
c906108c SS |
3246 | status->kind = TARGET_WAITKIND_STOPPED; |
3247 | status->value.sig = (enum target_signal) | |
3248 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3249 | ||
0f71a2f6 JM |
3250 | if (buf[3] == 'p') |
3251 | { | |
0f71a2f6 JM |
3252 | thread_num = strtol ((const char *) &buf[4], NULL, 16); |
3253 | record_currthread (thread_num); | |
3254 | } | |
c906108c | 3255 | goto got_status; |
23860348 | 3256 | case 'W': /* Target exited. */ |
c906108c SS |
3257 | { |
3258 | /* The remote process exited. */ | |
3259 | status->kind = TARGET_WAITKIND_EXITED; | |
3260 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
3261 | goto got_status; | |
3262 | } | |
3263 | case 'X': | |
3264 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
3265 | status->value.sig = (enum target_signal) | |
3266 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3267 | kill_kludge = 1; | |
3268 | ||
3269 | goto got_status; | |
23860348 | 3270 | case 'O': /* Console output. */ |
c906108c SS |
3271 | remote_console_output (buf + 1); |
3272 | continue; | |
3273 | case '\0': | |
3274 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3275 | { | |
3276 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3277 | the remote system doesn't support it. */ |
c906108c SS |
3278 | target_terminal_ours_for_output (); |
3279 | printf_filtered | |
3280 | ("Can't send signals to this remote system. %s not sent.\n", | |
3281 | target_signal_to_name (last_sent_signal)); | |
3282 | last_sent_signal = TARGET_SIGNAL_0; | |
3283 | target_terminal_inferior (); | |
3284 | ||
3285 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3286 | putpkt ((char *) buf); | |
3287 | continue; | |
3288 | } | |
3289 | /* else fallthrough */ | |
3290 | default: | |
8a3fe4f8 | 3291 | warning (_("Invalid remote reply: %s"), buf); |
c906108c SS |
3292 | continue; |
3293 | } | |
3294 | } | |
c5aa993b | 3295 | got_status: |
c906108c SS |
3296 | if (thread_num != -1) |
3297 | { | |
39f77062 | 3298 | return pid_to_ptid (thread_num); |
c906108c | 3299 | } |
39f77062 | 3300 | return inferior_ptid; |
c906108c SS |
3301 | } |
3302 | ||
23860348 | 3303 | /* Async version of remote_wait. */ |
39f77062 KB |
3304 | static ptid_t |
3305 | remote_async_wait (ptid_t ptid, struct target_waitstatus *status) | |
43ff13b4 | 3306 | { |
d01949b6 | 3307 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 3308 | struct remote_arch_state *rsa = get_remote_arch_state (); |
b2dd6311 | 3309 | ULONGEST thread_num = -1; |
3c3bea1c | 3310 | ULONGEST addr; |
43ff13b4 JM |
3311 | |
3312 | status->kind = TARGET_WAITKIND_EXITED; | |
3313 | status->value.integer = 0; | |
3314 | ||
3c3bea1c GS |
3315 | remote_stopped_by_watchpoint_p = 0; |
3316 | ||
43ff13b4 JM |
3317 | while (1) |
3318 | { | |
2e9f7625 | 3319 | char *buf, *p; |
c5aa993b | 3320 | |
ed9a39eb | 3321 | if (!target_is_async_p ()) |
43ff13b4 | 3322 | ofunc = signal (SIGINT, remote_interrupt); |
6426a772 JM |
3323 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
3324 | _never_ wait for ever -> test on target_is_async_p(). | |
3325 | However, before we do that we need to ensure that the caller | |
23860348 | 3326 | knows how to take the target into/out of async mode. */ |
6d820c5c | 3327 | getpkt (&rs->buf, &rs->buf_size, wait_forever_enabled_p); |
ed9a39eb | 3328 | if (!target_is_async_p ()) |
43ff13b4 JM |
3329 | signal (SIGINT, ofunc); |
3330 | ||
2e9f7625 DJ |
3331 | buf = rs->buf; |
3332 | ||
43ff13b4 | 3333 | /* This is a hook for when we need to do something (perhaps the |
c5aa993b | 3334 | collection of trace data) every time the target stops. */ |
9a4105ab AC |
3335 | if (deprecated_target_wait_loop_hook) |
3336 | (*deprecated_target_wait_loop_hook) (); | |
43ff13b4 JM |
3337 | |
3338 | switch (buf[0]) | |
3339 | { | |
23860348 | 3340 | case 'E': /* Error of some sort. */ |
8a3fe4f8 | 3341 | warning (_("Remote failure reply: %s"), buf); |
43ff13b4 | 3342 | continue; |
23860348 | 3343 | case 'F': /* File-I/O request. */ |
449092f6 CV |
3344 | remote_fileio_request (buf); |
3345 | continue; | |
23860348 | 3346 | case 'T': /* Status with PC, SP, FP, ... */ |
43ff13b4 | 3347 | { |
cfd77fa1 | 3348 | gdb_byte regs[MAX_REGISTER_SIZE]; |
43ff13b4 | 3349 | |
23860348 | 3350 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
43ff13b4 | 3351 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where |
c5aa993b JM |
3352 | ss = signal number |
3353 | n... = register number | |
3354 | r... = register contents | |
3355 | */ | |
43ff13b4 JM |
3356 | p = &buf[3]; /* after Txx */ |
3357 | ||
3358 | while (*p) | |
3359 | { | |
cfd77fa1 | 3360 | char *p1; |
43ff13b4 | 3361 | char *p_temp; |
6c3f2dbf | 3362 | int fieldsize; |
3c3bea1c | 3363 | long pnum = 0; |
43ff13b4 | 3364 | |
23860348 MS |
3365 | /* If the packet contains a register number, save it |
3366 | in pnum and set p1 to point to the character | |
3367 | following it. Otherwise p1 points to p. */ | |
3c3bea1c GS |
3368 | |
3369 | /* If this packet is an awatch packet, don't parse the 'a' | |
3370 | as a register number. */ | |
802188a7 | 3371 | |
3c3bea1c GS |
3372 | if (!strncmp (p, "awatch", strlen ("awatch")) != 0) |
3373 | { | |
3374 | /* Read the register number. */ | |
3375 | pnum = strtol (p, &p_temp, 16); | |
cfd77fa1 | 3376 | p1 = p_temp; |
3c3bea1c | 3377 | } |
802188a7 | 3378 | else |
3c3bea1c | 3379 | p1 = p; |
43ff13b4 | 3380 | |
23860348 | 3381 | if (p1 == p) /* No register number present here. */ |
43ff13b4 | 3382 | { |
cfd77fa1 | 3383 | p1 = strchr (p, ':'); |
43ff13b4 | 3384 | if (p1 == NULL) |
8a3fe4f8 AC |
3385 | error (_("Malformed packet(a) (missing colon): %s\n\ |
3386 | Packet: '%s'\n"), | |
3fcb8548 | 3387 | p, buf); |
3c3bea1c | 3388 | if (strncmp (p, "thread", p1 - p) == 0) |
43ff13b4 JM |
3389 | { |
3390 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
3391 | record_currthread (thread_num); | |
cfd77fa1 | 3392 | p = p_temp; |
43ff13b4 | 3393 | } |
3c3bea1c GS |
3394 | else if ((strncmp (p, "watch", p1 - p) == 0) |
3395 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
3396 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
3397 | { | |
3398 | remote_stopped_by_watchpoint_p = 1; | |
3399 | p = unpack_varlen_hex (++p1, &addr); | |
3400 | remote_watch_data_address = (CORE_ADDR)addr; | |
3401 | } | |
3402 | else | |
3403 | { | |
3404 | /* Silently skip unknown optional info. */ | |
cfd77fa1 | 3405 | p_temp = strchr (p1 + 1, ';'); |
3c3bea1c GS |
3406 | if (p_temp) |
3407 | p = p_temp; | |
3408 | } | |
43ff13b4 | 3409 | } |
802188a7 | 3410 | |
43ff13b4 JM |
3411 | else |
3412 | { | |
ea9c271d | 3413 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); |
43ff13b4 | 3414 | p = p1; |
43ff13b4 | 3415 | if (*p++ != ':') |
8a3fe4f8 AC |
3416 | error (_("Malformed packet(b) (missing colon): %s\n\ |
3417 | Packet: '%s'\n"), | |
3fcb8548 | 3418 | p, buf); |
43ff13b4 | 3419 | |
ad10f812 | 3420 | if (reg == NULL) |
8a3fe4f8 AC |
3421 | error (_("Remote sent bad register number %ld: %s\n\ |
3422 | Packet: '%s'\n"), | |
3fcb8548 | 3423 | pnum, p, buf); |
43ff13b4 | 3424 | |
cfd77fa1 | 3425 | fieldsize = hex2bin (p, regs, |
2bc416ba | 3426 | register_size (current_gdbarch, |
23860348 | 3427 | reg->regnum)); |
6c3f2dbf | 3428 | p += 2 * fieldsize; |
2bc416ba | 3429 | if (fieldsize < register_size (current_gdbarch, |
23860348 | 3430 | reg->regnum)) |
8a3fe4f8 | 3431 | warning (_("Remote reply is too short: %s"), buf); |
23a6d369 | 3432 | regcache_raw_supply (current_regcache, reg->regnum, regs); |
43ff13b4 JM |
3433 | } |
3434 | ||
3435 | if (*p++ != ';') | |
8a3fe4f8 | 3436 | error (_("Remote register badly formatted: %s\nhere: %s"), |
0a2cfde4 | 3437 | buf, p); |
43ff13b4 JM |
3438 | } |
3439 | } | |
3440 | /* fall through */ | |
23860348 | 3441 | case 'S': /* Old style status, just signal only. */ |
43ff13b4 JM |
3442 | status->kind = TARGET_WAITKIND_STOPPED; |
3443 | status->value.sig = (enum target_signal) | |
3444 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3445 | ||
3446 | if (buf[3] == 'p') | |
3447 | { | |
43ff13b4 JM |
3448 | thread_num = strtol ((const char *) &buf[4], NULL, 16); |
3449 | record_currthread (thread_num); | |
3450 | } | |
43ff13b4 | 3451 | goto got_status; |
23860348 | 3452 | case 'W': /* Target exited. */ |
43ff13b4 JM |
3453 | { |
3454 | /* The remote process exited. */ | |
3455 | status->kind = TARGET_WAITKIND_EXITED; | |
3456 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
3457 | goto got_status; | |
3458 | } | |
3459 | case 'X': | |
3460 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
3461 | status->value.sig = (enum target_signal) | |
3462 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3463 | kill_kludge = 1; | |
3464 | ||
3465 | goto got_status; | |
23860348 | 3466 | case 'O': /* Console output. */ |
43ff13b4 | 3467 | remote_console_output (buf + 1); |
c4093a6a | 3468 | /* Return immediately to the event loop. The event loop will |
23860348 | 3469 | still be waiting on the inferior afterwards. */ |
c4093a6a JM |
3470 | status->kind = TARGET_WAITKIND_IGNORE; |
3471 | goto got_status; | |
43ff13b4 JM |
3472 | case '\0': |
3473 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3474 | { | |
3475 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3476 | the remote system doesn't support it. */ |
43ff13b4 JM |
3477 | target_terminal_ours_for_output (); |
3478 | printf_filtered | |
3479 | ("Can't send signals to this remote system. %s not sent.\n", | |
3480 | target_signal_to_name (last_sent_signal)); | |
3481 | last_sent_signal = TARGET_SIGNAL_0; | |
3482 | target_terminal_inferior (); | |
3483 | ||
3484 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3485 | putpkt ((char *) buf); | |
3486 | continue; | |
3487 | } | |
3488 | /* else fallthrough */ | |
3489 | default: | |
8a3fe4f8 | 3490 | warning (_("Invalid remote reply: %s"), buf); |
43ff13b4 JM |
3491 | continue; |
3492 | } | |
3493 | } | |
c5aa993b | 3494 | got_status: |
43ff13b4 JM |
3495 | if (thread_num != -1) |
3496 | { | |
39f77062 | 3497 | return pid_to_ptid (thread_num); |
43ff13b4 | 3498 | } |
39f77062 | 3499 | return inferior_ptid; |
43ff13b4 JM |
3500 | } |
3501 | ||
74ca34ce | 3502 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 3503 | |
b96ec7ac | 3504 | static int |
56be3814 | 3505 | fetch_register_using_p (struct regcache *regcache, struct packet_reg *reg) |
b96ec7ac AC |
3506 | { |
3507 | struct remote_state *rs = get_remote_state (); | |
2e9f7625 | 3508 | char *buf, *p; |
b96ec7ac AC |
3509 | char regp[MAX_REGISTER_SIZE]; |
3510 | int i; | |
3511 | ||
74ca34ce DJ |
3512 | if (remote_protocol_packets[PACKET_p].support == PACKET_DISABLE) |
3513 | return 0; | |
3514 | ||
3515 | if (reg->pnum == -1) | |
3516 | return 0; | |
3517 | ||
2e9f7625 | 3518 | p = rs->buf; |
fcad0fa4 | 3519 | *p++ = 'p'; |
74ca34ce | 3520 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 3521 | *p++ = '\0'; |
6d820c5c | 3522 | remote_send (&rs->buf, &rs->buf_size); |
3f9a994c | 3523 | |
2e9f7625 DJ |
3524 | buf = rs->buf; |
3525 | ||
74ca34ce DJ |
3526 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_p])) |
3527 | { | |
3528 | case PACKET_OK: | |
3529 | break; | |
3530 | case PACKET_UNKNOWN: | |
3531 | return 0; | |
3532 | case PACKET_ERROR: | |
3533 | error (_("Could not fetch register \"%s\""), | |
3534 | gdbarch_register_name (current_gdbarch, reg->regnum)); | |
3535 | } | |
3f9a994c JB |
3536 | |
3537 | /* If this register is unfetchable, tell the regcache. */ | |
3538 | if (buf[0] == 'x') | |
8480adf2 | 3539 | { |
56be3814 | 3540 | regcache_raw_supply (regcache, reg->regnum, NULL); |
8480adf2 | 3541 | return 1; |
b96ec7ac | 3542 | } |
b96ec7ac | 3543 | |
3f9a994c JB |
3544 | /* Otherwise, parse and supply the value. */ |
3545 | p = buf; | |
3546 | i = 0; | |
3547 | while (p[0] != 0) | |
3548 | { | |
3549 | if (p[1] == 0) | |
74ca34ce | 3550 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
3551 | |
3552 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3553 | p += 2; | |
3554 | } | |
56be3814 | 3555 | regcache_raw_supply (regcache, reg->regnum, regp); |
3f9a994c | 3556 | return 1; |
b96ec7ac AC |
3557 | } |
3558 | ||
74ca34ce DJ |
3559 | /* Fetch the registers included in the target's 'g' packet. */ |
3560 | ||
29709017 DJ |
3561 | static int |
3562 | send_g_packet (void) | |
c906108c | 3563 | { |
d01949b6 | 3564 | struct remote_state *rs = get_remote_state (); |
74ca34ce | 3565 | int i, buf_len; |
c906108c | 3566 | char *p; |
74ca34ce | 3567 | char *regs; |
c906108c | 3568 | |
74ca34ce DJ |
3569 | sprintf (rs->buf, "g"); |
3570 | remote_send (&rs->buf, &rs->buf_size); | |
c906108c | 3571 | |
29709017 DJ |
3572 | /* We can get out of synch in various cases. If the first character |
3573 | in the buffer is not a hex character, assume that has happened | |
3574 | and try to fetch another packet to read. */ | |
3575 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
3576 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
3577 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
3578 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
3579 | { | |
3580 | if (remote_debug) | |
3581 | fprintf_unfiltered (gdb_stdlog, | |
3582 | "Bad register packet; fetching a new packet\n"); | |
3583 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3584 | } | |
3585 | ||
74ca34ce DJ |
3586 | buf_len = strlen (rs->buf); |
3587 | ||
3588 | /* Sanity check the received packet. */ | |
3589 | if (buf_len % 2 != 0) | |
3590 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf); | |
29709017 DJ |
3591 | |
3592 | return buf_len / 2; | |
3593 | } | |
3594 | ||
3595 | static void | |
56be3814 | 3596 | process_g_packet (struct regcache *regcache) |
29709017 DJ |
3597 | { |
3598 | struct remote_state *rs = get_remote_state (); | |
3599 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
3600 | int i, buf_len; | |
3601 | char *p; | |
3602 | char *regs; | |
3603 | ||
3604 | buf_len = strlen (rs->buf); | |
3605 | ||
3606 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce DJ |
3607 | if (buf_len > 2 * rsa->sizeof_g_packet) |
3608 | error (_("Remote 'g' packet reply is too long: %s"), rs->buf); | |
3609 | ||
3610 | /* Save the size of the packet sent to us by the target. It is used | |
3611 | as a heuristic when determining the max size of packets that the | |
3612 | target can safely receive. */ | |
3613 | if (rsa->actual_register_packet_size == 0) | |
3614 | rsa->actual_register_packet_size = buf_len; | |
3615 | ||
3616 | /* If this is smaller than we guessed the 'g' packet would be, | |
3617 | update our records. A 'g' reply that doesn't include a register's | |
3618 | value implies either that the register is not available, or that | |
3619 | the 'p' packet must be used. */ | |
3620 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 3621 | { |
74ca34ce DJ |
3622 | rsa->sizeof_g_packet = buf_len / 2; |
3623 | ||
f57d151a | 3624 | for (i = 0; i < gdbarch_num_regs (current_gdbarch); i++) |
b96ec7ac | 3625 | { |
74ca34ce DJ |
3626 | if (rsa->regs[i].pnum == -1) |
3627 | continue; | |
3628 | ||
3629 | if (rsa->regs[i].offset >= rsa->sizeof_g_packet) | |
3630 | rsa->regs[i].in_g_packet = 0; | |
b96ec7ac | 3631 | else |
74ca34ce | 3632 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 3633 | } |
74ca34ce | 3634 | } |
b323314b | 3635 | |
74ca34ce | 3636 | regs = alloca (rsa->sizeof_g_packet); |
c906108c SS |
3637 | |
3638 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 3639 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 3640 | |
c906108c SS |
3641 | /* Reply describes registers byte by byte, each byte encoded as two |
3642 | hex characters. Suck them all up, then supply them to the | |
3643 | register cacheing/storage mechanism. */ | |
3644 | ||
74ca34ce | 3645 | p = rs->buf; |
ea9c271d | 3646 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 3647 | { |
74ca34ce DJ |
3648 | if (p[0] == 0 || p[1] == 0) |
3649 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
3650 | internal_error (__FILE__, __LINE__, | |
3651 | "unexpected end of 'g' packet reply"); | |
3652 | ||
c906108c | 3653 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 3654 | regs[i] = 0; /* 'x' */ |
c906108c SS |
3655 | else |
3656 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3657 | p += 2; | |
3658 | } | |
3659 | ||
ad10f812 | 3660 | { |
b323314b | 3661 | int i; |
f57d151a | 3662 | for (i = 0; i < gdbarch_num_regs (current_gdbarch); i++) |
ad10f812 | 3663 | { |
ea9c271d | 3664 | struct packet_reg *r = &rsa->regs[i]; |
b323314b AC |
3665 | if (r->in_g_packet) |
3666 | { | |
74ca34ce DJ |
3667 | if (r->offset * 2 >= strlen (rs->buf)) |
3668 | /* This shouldn't happen - we adjusted in_g_packet above. */ | |
3669 | internal_error (__FILE__, __LINE__, | |
3670 | "unexpected end of 'g' packet reply"); | |
3671 | else if (rs->buf[r->offset * 2] == 'x') | |
8ccc1287 | 3672 | { |
74ca34ce | 3673 | gdb_assert (r->offset * 2 < strlen (rs->buf)); |
8ccc1287 AC |
3674 | /* The register isn't available, mark it as such (at |
3675 | the same time setting the value to zero). */ | |
56be3814 | 3676 | regcache_raw_supply (regcache, r->regnum, NULL); |
8ccc1287 AC |
3677 | } |
3678 | else | |
56be3814 | 3679 | regcache_raw_supply (regcache, r->regnum, |
8ccc1287 | 3680 | regs + r->offset); |
b323314b | 3681 | } |
ad10f812 AC |
3682 | } |
3683 | } | |
c906108c SS |
3684 | } |
3685 | ||
29709017 | 3686 | static void |
56be3814 | 3687 | fetch_registers_using_g (struct regcache *regcache) |
29709017 DJ |
3688 | { |
3689 | send_g_packet (); | |
56be3814 | 3690 | process_g_packet (regcache); |
29709017 DJ |
3691 | } |
3692 | ||
74ca34ce | 3693 | static void |
56be3814 | 3694 | remote_fetch_registers (struct regcache *regcache, int regnum) |
74ca34ce DJ |
3695 | { |
3696 | struct remote_state *rs = get_remote_state (); | |
3697 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
3698 | int i; | |
3699 | ||
3700 | set_thread (PIDGET (inferior_ptid), 1); | |
3701 | ||
3702 | if (regnum >= 0) | |
3703 | { | |
3704 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
3705 | gdb_assert (reg != NULL); | |
3706 | ||
3707 | /* If this register might be in the 'g' packet, try that first - | |
3708 | we are likely to read more than one register. If this is the | |
3709 | first 'g' packet, we might be overly optimistic about its | |
3710 | contents, so fall back to 'p'. */ | |
3711 | if (reg->in_g_packet) | |
3712 | { | |
56be3814 | 3713 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
3714 | if (reg->in_g_packet) |
3715 | return; | |
3716 | } | |
3717 | ||
56be3814 | 3718 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
3719 | return; |
3720 | ||
3721 | /* This register is not available. */ | |
56be3814 | 3722 | regcache_raw_supply (regcache, reg->regnum, NULL); |
74ca34ce DJ |
3723 | |
3724 | return; | |
3725 | } | |
3726 | ||
56be3814 | 3727 | fetch_registers_using_g (regcache); |
74ca34ce | 3728 | |
f57d151a | 3729 | for (i = 0; i < gdbarch_num_regs (current_gdbarch); i++) |
74ca34ce | 3730 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 3731 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
3732 | { |
3733 | /* This register is not available. */ | |
56be3814 | 3734 | regcache_raw_supply (regcache, i, NULL); |
74ca34ce DJ |
3735 | } |
3736 | } | |
3737 | ||
c906108c SS |
3738 | /* Prepare to store registers. Since we may send them all (using a |
3739 | 'G' request), we have to read out the ones we don't want to change | |
3740 | first. */ | |
3741 | ||
c5aa993b | 3742 | static void |
316f2060 | 3743 | remote_prepare_to_store (struct regcache *regcache) |
c906108c | 3744 | { |
ea9c271d | 3745 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cf0e1e0d | 3746 | int i; |
cfd77fa1 | 3747 | gdb_byte buf[MAX_REGISTER_SIZE]; |
cf0e1e0d | 3748 | |
c906108c | 3749 | /* Make sure the entire registers array is valid. */ |
444abaca | 3750 | switch (remote_protocol_packets[PACKET_P].support) |
5a2468f5 JM |
3751 | { |
3752 | case PACKET_DISABLE: | |
3753 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 3754 | /* Make sure all the necessary registers are cached. */ |
f57d151a | 3755 | for (i = 0; i < gdbarch_num_regs (current_gdbarch); i++) |
ea9c271d | 3756 | if (rsa->regs[i].in_g_packet) |
316f2060 | 3757 | regcache_raw_read (regcache, rsa->regs[i].regnum, buf); |
5a2468f5 JM |
3758 | break; |
3759 | case PACKET_ENABLE: | |
3760 | break; | |
3761 | } | |
3762 | } | |
3763 | ||
ad10f812 | 3764 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 3765 | packet was not recognized. */ |
5a2468f5 JM |
3766 | |
3767 | static int | |
56be3814 | 3768 | store_register_using_P (const struct regcache *regcache, struct packet_reg *reg) |
5a2468f5 | 3769 | { |
d01949b6 | 3770 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 3771 | struct remote_arch_state *rsa = get_remote_arch_state (); |
5a2468f5 | 3772 | /* Try storing a single register. */ |
6d820c5c | 3773 | char *buf = rs->buf; |
cfd77fa1 | 3774 | gdb_byte regp[MAX_REGISTER_SIZE]; |
5a2468f5 | 3775 | char *p; |
5a2468f5 | 3776 | |
74ca34ce DJ |
3777 | if (remote_protocol_packets[PACKET_P].support == PACKET_DISABLE) |
3778 | return 0; | |
3779 | ||
3780 | if (reg->pnum == -1) | |
3781 | return 0; | |
3782 | ||
ea9c271d | 3783 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 3784 | p = buf + strlen (buf); |
56be3814 | 3785 | regcache_raw_collect (regcache, reg->regnum, regp); |
3acba339 | 3786 | bin2hex (regp, p, register_size (current_gdbarch, reg->regnum)); |
6d820c5c | 3787 | remote_send (&rs->buf, &rs->buf_size); |
5a2468f5 | 3788 | |
74ca34ce DJ |
3789 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
3790 | { | |
3791 | case PACKET_OK: | |
3792 | return 1; | |
3793 | case PACKET_ERROR: | |
3794 | error (_("Could not write register \"%s\""), | |
3795 | gdbarch_register_name (current_gdbarch, reg->regnum)); | |
3796 | case PACKET_UNKNOWN: | |
3797 | return 0; | |
3798 | default: | |
3799 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
3800 | } | |
c906108c SS |
3801 | } |
3802 | ||
23860348 MS |
3803 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
3804 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
3805 | |
3806 | static void | |
56be3814 | 3807 | store_registers_using_G (const struct regcache *regcache) |
c906108c | 3808 | { |
d01949b6 | 3809 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 3810 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cfd77fa1 | 3811 | gdb_byte *regs; |
c906108c SS |
3812 | char *p; |
3813 | ||
193cb69f AC |
3814 | /* Extract all the registers in the regcache copying them into a |
3815 | local buffer. */ | |
3816 | { | |
b323314b | 3817 | int i; |
ea9c271d DJ |
3818 | regs = alloca (rsa->sizeof_g_packet); |
3819 | memset (regs, 0, rsa->sizeof_g_packet); | |
f57d151a | 3820 | for (i = 0; i < gdbarch_num_regs (current_gdbarch); i++) |
193cb69f | 3821 | { |
ea9c271d | 3822 | struct packet_reg *r = &rsa->regs[i]; |
b323314b | 3823 | if (r->in_g_packet) |
56be3814 | 3824 | regcache_raw_collect (regcache, r->regnum, regs + r->offset); |
193cb69f AC |
3825 | } |
3826 | } | |
c906108c SS |
3827 | |
3828 | /* Command describes registers byte by byte, | |
3829 | each byte encoded as two hex characters. */ | |
6d820c5c | 3830 | p = rs->buf; |
193cb69f | 3831 | *p++ = 'G'; |
74ca34ce DJ |
3832 | /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets |
3833 | updated. */ | |
3834 | bin2hex (regs, p, rsa->sizeof_g_packet); | |
6d820c5c | 3835 | remote_send (&rs->buf, &rs->buf_size); |
c906108c | 3836 | } |
74ca34ce DJ |
3837 | |
3838 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
3839 | of the register cache buffer. FIXME: ignores errors. */ | |
3840 | ||
3841 | static void | |
56be3814 | 3842 | remote_store_registers (struct regcache *regcache, int regnum) |
74ca34ce DJ |
3843 | { |
3844 | struct remote_state *rs = get_remote_state (); | |
3845 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
3846 | int i; | |
3847 | ||
3848 | set_thread (PIDGET (inferior_ptid), 1); | |
3849 | ||
3850 | if (regnum >= 0) | |
3851 | { | |
3852 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
3853 | gdb_assert (reg != NULL); | |
3854 | ||
3855 | /* Always prefer to store registers using the 'P' packet if | |
3856 | possible; we often change only a small number of registers. | |
3857 | Sometimes we change a larger number; we'd need help from a | |
3858 | higher layer to know to use 'G'. */ | |
56be3814 | 3859 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
3860 | return; |
3861 | ||
3862 | /* For now, don't complain if we have no way to write the | |
3863 | register. GDB loses track of unavailable registers too | |
3864 | easily. Some day, this may be an error. We don't have | |
3865 | any way to read the register, either... */ | |
3866 | if (!reg->in_g_packet) | |
3867 | return; | |
3868 | ||
56be3814 | 3869 | store_registers_using_G (regcache); |
74ca34ce DJ |
3870 | return; |
3871 | } | |
3872 | ||
56be3814 | 3873 | store_registers_using_G (regcache); |
74ca34ce | 3874 | |
f57d151a | 3875 | for (i = 0; i < gdbarch_num_regs (current_gdbarch); i++) |
74ca34ce | 3876 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 3877 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
3878 | /* See above for why we do not issue an error here. */ |
3879 | continue; | |
3880 | } | |
c906108c SS |
3881 | \f |
3882 | ||
3883 | /* Return the number of hex digits in num. */ | |
3884 | ||
3885 | static int | |
fba45db2 | 3886 | hexnumlen (ULONGEST num) |
c906108c SS |
3887 | { |
3888 | int i; | |
3889 | ||
3890 | for (i = 0; num != 0; i++) | |
3891 | num >>= 4; | |
3892 | ||
3893 | return max (i, 1); | |
3894 | } | |
3895 | ||
2df3850c | 3896 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
3897 | |
3898 | static int | |
fba45db2 | 3899 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 3900 | { |
c906108c | 3901 | int len = hexnumlen (num); |
2df3850c JM |
3902 | return hexnumnstr (buf, num, len); |
3903 | } | |
3904 | ||
c906108c | 3905 | |
2df3850c | 3906 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 3907 | |
2df3850c | 3908 | static int |
fba45db2 | 3909 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
3910 | { |
3911 | int i; | |
3912 | ||
3913 | buf[width] = '\0'; | |
3914 | ||
3915 | for (i = width - 1; i >= 0; i--) | |
c906108c | 3916 | { |
c5aa993b | 3917 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
3918 | num >>= 4; |
3919 | } | |
3920 | ||
2df3850c | 3921 | return width; |
c906108c SS |
3922 | } |
3923 | ||
23860348 | 3924 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
3925 | |
3926 | static CORE_ADDR | |
fba45db2 | 3927 | remote_address_masked (CORE_ADDR addr) |
c906108c SS |
3928 | { |
3929 | if (remote_address_size > 0 | |
3930 | && remote_address_size < (sizeof (ULONGEST) * 8)) | |
3931 | { | |
3932 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 3933 | in a ULONGEST variable. */ |
c906108c SS |
3934 | ULONGEST mask = 1; |
3935 | mask = (mask << remote_address_size) - 1; | |
3936 | addr &= mask; | |
3937 | } | |
3938 | return addr; | |
3939 | } | |
3940 | ||
a31ea83d DJ |
3941 | /* Convert BUFFER, binary data at least LEN bytes long, into escaped |
3942 | binary data in OUT_BUF. Set *OUT_LEN to the length of the data | |
3943 | encoded in OUT_BUF, and return the number of bytes in OUT_BUF | |
3944 | (which may be more than *OUT_LEN due to escape characters). The | |
3945 | total number of bytes in the output buffer will be at most | |
3946 | OUT_MAXLEN. */ | |
3947 | ||
3948 | static int | |
3949 | remote_escape_output (const gdb_byte *buffer, int len, | |
3950 | gdb_byte *out_buf, int *out_len, | |
3951 | int out_maxlen) | |
3952 | { | |
3953 | int input_index, output_index; | |
3954 | ||
3955 | output_index = 0; | |
3956 | for (input_index = 0; input_index < len; input_index++) | |
3957 | { | |
3958 | gdb_byte b = buffer[input_index]; | |
3959 | ||
3960 | if (b == '$' || b == '#' || b == '}') | |
3961 | { | |
3962 | /* These must be escaped. */ | |
3963 | if (output_index + 2 > out_maxlen) | |
3964 | break; | |
3965 | out_buf[output_index++] = '}'; | |
3966 | out_buf[output_index++] = b ^ 0x20; | |
3967 | } | |
3968 | else | |
3969 | { | |
3970 | if (output_index + 1 > out_maxlen) | |
3971 | break; | |
3972 | out_buf[output_index++] = b; | |
3973 | } | |
3974 | } | |
3975 | ||
3976 | *out_len = input_index; | |
3977 | return output_index; | |
3978 | } | |
3979 | ||
0876f84a DJ |
3980 | /* Convert BUFFER, escaped data LEN bytes long, into binary data |
3981 | in OUT_BUF. Return the number of bytes written to OUT_BUF. | |
3982 | Raise an error if the total number of bytes exceeds OUT_MAXLEN. | |
3983 | ||
3984 | This function reverses remote_escape_output. It allows more | |
3985 | escaped characters than that function does, in particular because | |
3986 | '*' must be escaped to avoid the run-length encoding processing | |
3987 | in reading packets. */ | |
3988 | ||
3989 | static int | |
3990 | remote_unescape_input (const gdb_byte *buffer, int len, | |
3991 | gdb_byte *out_buf, int out_maxlen) | |
3992 | { | |
3993 | int input_index, output_index; | |
3994 | int escaped; | |
3995 | ||
3996 | output_index = 0; | |
3997 | escaped = 0; | |
3998 | for (input_index = 0; input_index < len; input_index++) | |
3999 | { | |
4000 | gdb_byte b = buffer[input_index]; | |
4001 | ||
4002 | if (output_index + 1 > out_maxlen) | |
4003 | { | |
4004 | warning (_("Received too much data from remote target;" | |
4005 | " ignoring overflow.")); | |
4006 | return output_index; | |
4007 | } | |
4008 | ||
4009 | if (escaped) | |
4010 | { | |
4011 | out_buf[output_index++] = b ^ 0x20; | |
4012 | escaped = 0; | |
4013 | } | |
4014 | else if (b == '}') | |
4015 | escaped = 1; | |
4016 | else | |
4017 | out_buf[output_index++] = b; | |
4018 | } | |
4019 | ||
4020 | if (escaped) | |
4021 | error (_("Unmatched escape character in target response.")); | |
4022 | ||
4023 | return output_index; | |
4024 | } | |
4025 | ||
c906108c SS |
4026 | /* Determine whether the remote target supports binary downloading. |
4027 | This is accomplished by sending a no-op memory write of zero length | |
4028 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
4029 | the whole packet, since many stubs strip the eighth bit and |
4030 | subsequently compute a wrong checksum, which causes real havoc with | |
4031 | remote_write_bytes. | |
7a292a7a | 4032 | |
96baa820 JM |
4033 | NOTE: This can still lose if the serial line is not eight-bit |
4034 | clean. In cases like this, the user should clear "remote | |
23860348 | 4035 | X-packet". */ |
96baa820 | 4036 | |
c906108c | 4037 | static void |
fba45db2 | 4038 | check_binary_download (CORE_ADDR addr) |
c906108c | 4039 | { |
d01949b6 | 4040 | struct remote_state *rs = get_remote_state (); |
24b06219 | 4041 | |
444abaca | 4042 | switch (remote_protocol_packets[PACKET_X].support) |
c906108c | 4043 | { |
96baa820 JM |
4044 | case PACKET_DISABLE: |
4045 | break; | |
4046 | case PACKET_ENABLE: | |
4047 | break; | |
4048 | case PACKET_SUPPORT_UNKNOWN: | |
4049 | { | |
96baa820 | 4050 | char *p; |
802188a7 | 4051 | |
2e9f7625 | 4052 | p = rs->buf; |
96baa820 JM |
4053 | *p++ = 'X'; |
4054 | p += hexnumstr (p, (ULONGEST) addr); | |
4055 | *p++ = ','; | |
4056 | p += hexnumstr (p, (ULONGEST) 0); | |
4057 | *p++ = ':'; | |
4058 | *p = '\0'; | |
802188a7 | 4059 | |
2e9f7625 | 4060 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 4061 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 4062 | |
2e9f7625 | 4063 | if (rs->buf[0] == '\0') |
96baa820 JM |
4064 | { |
4065 | if (remote_debug) | |
4066 | fprintf_unfiltered (gdb_stdlog, | |
4067 | "binary downloading NOT suppported by target\n"); | |
444abaca | 4068 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
4069 | } |
4070 | else | |
4071 | { | |
4072 | if (remote_debug) | |
4073 | fprintf_unfiltered (gdb_stdlog, | |
4074 | "binary downloading suppported by target\n"); | |
444abaca | 4075 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
4076 | } |
4077 | break; | |
4078 | } | |
c906108c SS |
4079 | } |
4080 | } | |
4081 | ||
4082 | /* Write memory data directly to the remote machine. | |
4083 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 4084 | HEADER is the starting part of the packet. |
c906108c SS |
4085 | MEMADDR is the address in the remote memory space. |
4086 | MYADDR is the address of the buffer in our space. | |
4087 | LEN is the number of bytes. | |
a76d924d DJ |
4088 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
4089 | should send data as binary ('X'), or hex-encoded ('M'). | |
4090 | ||
4091 | The function creates packet of the form | |
4092 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
4093 | ||
4094 | where encoding of <DATA> is termined by PACKET_FORMAT. | |
4095 | ||
4096 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
4097 | are omitted. | |
4098 | ||
4099 | Returns the number of bytes transferred, or 0 (setting errno) for | |
23860348 | 4100 | error. Only transfer a single packet. */ |
c906108c | 4101 | |
a76d924d DJ |
4102 | static int |
4103 | remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, | |
4104 | const gdb_byte *myaddr, int len, | |
4105 | char packet_format, int use_length) | |
c906108c | 4106 | { |
6d820c5c | 4107 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 4108 | char *p; |
a76d924d DJ |
4109 | char *plen = NULL; |
4110 | int plenlen = 0; | |
917317f4 JM |
4111 | int todo; |
4112 | int nr_bytes; | |
a257b5bb | 4113 | int payload_size; |
6765f3e5 | 4114 | int payload_length; |
a76d924d DJ |
4115 | int header_length; |
4116 | ||
4117 | if (packet_format != 'X' && packet_format != 'M') | |
4118 | internal_error (__FILE__, __LINE__, | |
4119 | "remote_write_bytes_aux: bad packet format"); | |
c906108c | 4120 | |
b2182ed2 DJ |
4121 | if (len <= 0) |
4122 | return 0; | |
4123 | ||
3de11b2e | 4124 | payload_size = get_memory_write_packet_size (); |
2bc416ba | 4125 | |
6d820c5c DJ |
4126 | /* The packet buffer will be large enough for the payload; |
4127 | get_memory_packet_size ensures this. */ | |
a76d924d | 4128 | rs->buf[0] = '\0'; |
c906108c | 4129 | |
a257b5bb | 4130 | /* Compute the size of the actual payload by subtracting out the |
3de11b2e NS |
4131 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". |
4132 | */ | |
a76d924d DJ |
4133 | payload_size -= strlen ("$,:#NN"); |
4134 | if (!use_length) | |
4135 | /* The comma won't be used. */ | |
4136 | payload_size += 1; | |
4137 | header_length = strlen (header); | |
4138 | payload_size -= header_length; | |
3de11b2e | 4139 | payload_size -= hexnumlen (memaddr); |
c906108c | 4140 | |
a76d924d | 4141 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 4142 | |
a76d924d DJ |
4143 | strcat (rs->buf, header); |
4144 | p = rs->buf + strlen (header); | |
4145 | ||
4146 | /* Compute a best guess of the number of bytes actually transfered. */ | |
4147 | if (packet_format == 'X') | |
c906108c | 4148 | { |
23860348 | 4149 | /* Best guess at number of bytes that will fit. */ |
a257b5bb | 4150 | todo = min (len, payload_size); |
a76d924d DJ |
4151 | if (use_length) |
4152 | payload_size -= hexnumlen (todo); | |
3de11b2e | 4153 | todo = min (todo, payload_size); |
a76d924d DJ |
4154 | } |
4155 | else | |
4156 | { | |
23860348 | 4157 | /* Num bytes that will fit. */ |
a257b5bb | 4158 | todo = min (len, payload_size / 2); |
a76d924d DJ |
4159 | if (use_length) |
4160 | payload_size -= hexnumlen (todo); | |
3de11b2e | 4161 | todo = min (todo, payload_size / 2); |
917317f4 | 4162 | } |
a76d924d | 4163 | |
3de11b2e NS |
4164 | if (todo <= 0) |
4165 | internal_error (__FILE__, __LINE__, | |
4166 | _("minumum packet size too small to write data")); | |
802188a7 | 4167 | |
6765f3e5 DJ |
4168 | /* If we already need another packet, then try to align the end |
4169 | of this packet to a useful boundary. */ | |
4170 | if (todo > 2 * REMOTE_ALIGN_WRITES && todo < len) | |
4171 | todo = ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
4172 | ||
a257b5bb | 4173 | /* Append "<memaddr>". */ |
917317f4 JM |
4174 | memaddr = remote_address_masked (memaddr); |
4175 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 4176 | |
a76d924d DJ |
4177 | if (use_length) |
4178 | { | |
4179 | /* Append ",". */ | |
4180 | *p++ = ','; | |
802188a7 | 4181 | |
a76d924d DJ |
4182 | /* Append <len>. Retain the location/size of <len>. It may need to |
4183 | be adjusted once the packet body has been created. */ | |
4184 | plen = p; | |
4185 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
4186 | p += plenlen; | |
4187 | } | |
a257b5bb AC |
4188 | |
4189 | /* Append ":". */ | |
917317f4 JM |
4190 | *p++ = ':'; |
4191 | *p = '\0'; | |
802188a7 | 4192 | |
a257b5bb | 4193 | /* Append the packet body. */ |
a76d924d | 4194 | if (packet_format == 'X') |
917317f4 | 4195 | { |
917317f4 JM |
4196 | /* Binary mode. Send target system values byte by byte, in |
4197 | increasing byte addresses. Only escape certain critical | |
4198 | characters. */ | |
6765f3e5 DJ |
4199 | payload_length = remote_escape_output (myaddr, todo, p, &nr_bytes, |
4200 | payload_size); | |
4201 | ||
4202 | /* If not all TODO bytes fit, then we'll need another packet. Make | |
9b7194bc DJ |
4203 | a second try to keep the end of the packet aligned. Don't do |
4204 | this if the packet is tiny. */ | |
4205 | if (nr_bytes < todo && nr_bytes > 2 * REMOTE_ALIGN_WRITES) | |
6765f3e5 DJ |
4206 | { |
4207 | int new_nr_bytes; | |
4208 | ||
4209 | new_nr_bytes = (((memaddr + nr_bytes) & ~(REMOTE_ALIGN_WRITES - 1)) | |
4210 | - memaddr); | |
4211 | if (new_nr_bytes != nr_bytes) | |
4212 | payload_length = remote_escape_output (myaddr, new_nr_bytes, | |
4213 | p, &nr_bytes, | |
4214 | payload_size); | |
4215 | } | |
4216 | ||
4217 | p += payload_length; | |
a76d924d | 4218 | if (use_length && nr_bytes < todo) |
c906108c | 4219 | { |
802188a7 | 4220 | /* Escape chars have filled up the buffer prematurely, |
917317f4 JM |
4221 | and we have actually sent fewer bytes than planned. |
4222 | Fix-up the length field of the packet. Use the same | |
4223 | number of characters as before. */ | |
917317f4 JM |
4224 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); |
4225 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 4226 | } |
a76d924d DJ |
4227 | } |
4228 | else | |
4229 | { | |
917317f4 JM |
4230 | /* Normal mode: Send target system values byte by byte, in |
4231 | increasing byte addresses. Each byte is encoded as a two hex | |
4232 | value. */ | |
2644f393 | 4233 | nr_bytes = bin2hex (myaddr, p, todo); |
aa6c0017 | 4234 | p += 2 * nr_bytes; |
c906108c | 4235 | } |
802188a7 | 4236 | |
2e9f7625 | 4237 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 4238 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 4239 | |
2e9f7625 | 4240 | if (rs->buf[0] == 'E') |
917317f4 JM |
4241 | { |
4242 | /* There is no correspondance between what the remote protocol | |
4243 | uses for errors and errno codes. We would like a cleaner way | |
4244 | of representing errors (big enough to include errno codes, | |
4245 | bfd_error codes, and others). But for now just return EIO. */ | |
4246 | errno = EIO; | |
4247 | return 0; | |
4248 | } | |
802188a7 | 4249 | |
23860348 MS |
4250 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send |
4251 | fewer bytes than we'd planned. */ | |
917317f4 | 4252 | return nr_bytes; |
c906108c SS |
4253 | } |
4254 | ||
a76d924d DJ |
4255 | /* Write memory data directly to the remote machine. |
4256 | This does not inform the data cache; the data cache uses this. | |
4257 | MEMADDR is the address in the remote memory space. | |
4258 | MYADDR is the address of the buffer in our space. | |
4259 | LEN is the number of bytes. | |
4260 | ||
4261 | Returns number of bytes transferred, or 0 (setting errno) for | |
4262 | error. Only transfer a single packet. */ | |
4263 | ||
4264 | int | |
4265 | remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, int len) | |
4266 | { | |
4267 | char *packet_format = 0; | |
4268 | ||
4269 | /* Check whether the target supports binary download. */ | |
4270 | check_binary_download (memaddr); | |
4271 | ||
4272 | switch (remote_protocol_packets[PACKET_X].support) | |
4273 | { | |
4274 | case PACKET_ENABLE: | |
4275 | packet_format = "X"; | |
4276 | break; | |
4277 | case PACKET_DISABLE: | |
4278 | packet_format = "M"; | |
4279 | break; | |
4280 | case PACKET_SUPPORT_UNKNOWN: | |
4281 | internal_error (__FILE__, __LINE__, | |
4282 | _("remote_write_bytes: bad internal state")); | |
4283 | default: | |
4284 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
4285 | } | |
4286 | ||
4287 | return remote_write_bytes_aux (packet_format, | |
4288 | memaddr, myaddr, len, packet_format[0], 1); | |
4289 | } | |
4290 | ||
c906108c SS |
4291 | /* Read memory data directly from the remote machine. |
4292 | This does not use the data cache; the data cache uses this. | |
4293 | MEMADDR is the address in the remote memory space. | |
4294 | MYADDR is the address of the buffer in our space. | |
4295 | LEN is the number of bytes. | |
4296 | ||
4297 | Returns number of bytes transferred, or 0 for error. */ | |
4298 | ||
917317f4 JM |
4299 | /* NOTE: cagney/1999-10-18: This function (and its siblings in other |
4300 | remote targets) shouldn't attempt to read the entire buffer. | |
4301 | Instead it should read a single packet worth of data and then | |
4302 | return the byte size of that packet to the caller. The caller (its | |
4303 | caller and its callers caller ;-) already contains code for | |
23860348 | 4304 | handling partial reads. */ |
917317f4 | 4305 | |
449092f6 | 4306 | int |
cfd77fa1 | 4307 | remote_read_bytes (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
c906108c | 4308 | { |
6d820c5c | 4309 | struct remote_state *rs = get_remote_state (); |
23860348 | 4310 | int max_buf_size; /* Max size of packet output buffer. */ |
c906108c SS |
4311 | int origlen; |
4312 | ||
b2182ed2 DJ |
4313 | if (len <= 0) |
4314 | return 0; | |
4315 | ||
11cf8741 | 4316 | max_buf_size = get_memory_read_packet_size (); |
6d820c5c DJ |
4317 | /* The packet buffer will be large enough for the payload; |
4318 | get_memory_packet_size ensures this. */ | |
c906108c SS |
4319 | |
4320 | origlen = len; | |
4321 | while (len > 0) | |
4322 | { | |
c906108c SS |
4323 | char *p; |
4324 | int todo; | |
4325 | int i; | |
4326 | ||
c5aa993b | 4327 | todo = min (len, max_buf_size / 2); /* num bytes that will fit */ |
c906108c SS |
4328 | |
4329 | /* construct "m"<memaddr>","<len>" */ | |
2e9f7625 | 4330 | /* sprintf (rs->buf, "m%lx,%x", (unsigned long) memaddr, todo); */ |
c906108c | 4331 | memaddr = remote_address_masked (memaddr); |
2e9f7625 | 4332 | p = rs->buf; |
c906108c SS |
4333 | *p++ = 'm'; |
4334 | p += hexnumstr (p, (ULONGEST) memaddr); | |
4335 | *p++ = ','; | |
4336 | p += hexnumstr (p, (ULONGEST) todo); | |
4337 | *p = '\0'; | |
4338 | ||
2e9f7625 | 4339 | putpkt (rs->buf); |
6d820c5c | 4340 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 4341 | |
2e9f7625 DJ |
4342 | if (rs->buf[0] == 'E' |
4343 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
4344 | && rs->buf[3] == '\0') | |
c906108c | 4345 | { |
23860348 MS |
4346 | /* There is no correspondance between what the remote |
4347 | protocol uses for errors and errno codes. We would like | |
4348 | a cleaner way of representing errors (big enough to | |
4349 | include errno codes, bfd_error codes, and others). But | |
4350 | for now just return EIO. */ | |
c906108c SS |
4351 | errno = EIO; |
4352 | return 0; | |
4353 | } | |
4354 | ||
c5aa993b JM |
4355 | /* Reply describes memory byte by byte, |
4356 | each byte encoded as two hex characters. */ | |
c906108c | 4357 | |
2e9f7625 | 4358 | p = rs->buf; |
30559e10 | 4359 | if ((i = hex2bin (p, myaddr, todo)) < todo) |
c906108c | 4360 | { |
30559e10 | 4361 | /* Reply is short. This means that we were able to read |
23860348 | 4362 | only part of what we wanted to. */ |
30559e10 | 4363 | return i + (origlen - len); |
c906108c SS |
4364 | } |
4365 | myaddr += todo; | |
4366 | memaddr += todo; | |
4367 | len -= todo; | |
4368 | } | |
4369 | return origlen; | |
4370 | } | |
4371 | \f | |
4372 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
23860348 MS |
4373 | transferring to or from debugger address BUFFER. Write to inferior |
4374 | if SHOULD_WRITE is nonzero. Returns length of data written or | |
4375 | read; 0 for error. TARGET is unused. */ | |
392a587b | 4376 | |
c906108c | 4377 | static int |
961cb7b5 | 4378 | remote_xfer_memory (CORE_ADDR mem_addr, gdb_byte *buffer, int mem_len, |
0a65a603 | 4379 | int should_write, struct mem_attrib *attrib, |
29e57380 | 4380 | struct target_ops *target) |
c906108c | 4381 | { |
4930751a C |
4382 | int res; |
4383 | ||
4930751a | 4384 | if (should_write) |
b2182ed2 | 4385 | res = remote_write_bytes (mem_addr, buffer, mem_len); |
4930751a | 4386 | else |
b2182ed2 | 4387 | res = remote_read_bytes (mem_addr, buffer, mem_len); |
4930751a C |
4388 | |
4389 | return res; | |
c906108c SS |
4390 | } |
4391 | ||
a76d924d DJ |
4392 | /* Sends a packet with content determined by the printf format string |
4393 | FORMAT and the remaining arguments, then gets the reply. Returns | |
4394 | whether the packet was a success, a failure, or unknown. */ | |
4395 | ||
4396 | enum packet_result | |
4397 | remote_send_printf (const char *format, ...) | |
4398 | { | |
4399 | struct remote_state *rs = get_remote_state (); | |
4400 | int max_size = get_remote_packet_size (); | |
4401 | ||
4402 | va_list ap; | |
4403 | va_start (ap, format); | |
4404 | ||
4405 | rs->buf[0] = '\0'; | |
4406 | if (vsnprintf (rs->buf, max_size, format, ap) >= max_size) | |
4407 | internal_error (__FILE__, __LINE__, "Too long remote packet."); | |
4408 | ||
4409 | if (putpkt (rs->buf) < 0) | |
4410 | error (_("Communication problem with target.")); | |
4411 | ||
4412 | rs->buf[0] = '\0'; | |
4413 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4414 | ||
4415 | return packet_check_result (rs->buf); | |
4416 | } | |
4417 | ||
4418 | static void | |
4419 | restore_remote_timeout (void *p) | |
4420 | { | |
4421 | int value = *(int *)p; | |
4422 | remote_timeout = value; | |
4423 | } | |
4424 | ||
4425 | /* Flash writing can take quite some time. We'll set | |
4426 | effectively infinite timeout for flash operations. | |
4427 | In future, we'll need to decide on a better approach. */ | |
4428 | static const int remote_flash_timeout = 1000; | |
4429 | ||
4430 | static void | |
4431 | remote_flash_erase (struct target_ops *ops, | |
4432 | ULONGEST address, LONGEST length) | |
4433 | { | |
4434 | int saved_remote_timeout = remote_timeout; | |
4435 | enum packet_result ret; | |
4436 | ||
4437 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
4438 | &saved_remote_timeout); | |
4439 | remote_timeout = remote_flash_timeout; | |
4440 | ||
4441 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
4442 | paddr (address), | |
4443 | phex (length, 4)); | |
4444 | switch (ret) | |
4445 | { | |
4446 | case PACKET_UNKNOWN: | |
4447 | error (_("Remote target does not support flash erase")); | |
4448 | case PACKET_ERROR: | |
4449 | error (_("Error erasing flash with vFlashErase packet")); | |
4450 | default: | |
4451 | break; | |
4452 | } | |
4453 | ||
4454 | do_cleanups (back_to); | |
4455 | } | |
4456 | ||
4457 | static LONGEST | |
4458 | remote_flash_write (struct target_ops *ops, | |
4459 | ULONGEST address, LONGEST length, | |
4460 | const gdb_byte *data) | |
4461 | { | |
4462 | int saved_remote_timeout = remote_timeout; | |
4463 | int ret; | |
4464 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
4465 | &saved_remote_timeout); | |
4466 | ||
4467 | remote_timeout = remote_flash_timeout; | |
4468 | ret = remote_write_bytes_aux ("vFlashWrite:", address, data, length, 'X', 0); | |
4469 | do_cleanups (back_to); | |
4470 | ||
4471 | return ret; | |
4472 | } | |
4473 | ||
4474 | static void | |
4475 | remote_flash_done (struct target_ops *ops) | |
4476 | { | |
4477 | int saved_remote_timeout = remote_timeout; | |
4478 | int ret; | |
4479 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
4480 | &saved_remote_timeout); | |
4481 | ||
4482 | remote_timeout = remote_flash_timeout; | |
4483 | ret = remote_send_printf ("vFlashDone"); | |
4484 | do_cleanups (back_to); | |
4485 | ||
4486 | switch (ret) | |
4487 | { | |
4488 | case PACKET_UNKNOWN: | |
4489 | error (_("Remote target does not support vFlashDone")); | |
4490 | case PACKET_ERROR: | |
4491 | error (_("Error finishing flash operation")); | |
4492 | default: | |
4493 | break; | |
4494 | } | |
4495 | } | |
4496 | ||
c906108c | 4497 | static void |
fba45db2 | 4498 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
4499 | { |
4500 | puts_filtered ("Debugging a target over a serial line.\n"); | |
4501 | } | |
4502 | \f | |
4503 | /* Stuff for dealing with the packets which are part of this protocol. | |
4504 | See comment at top of file for details. */ | |
4505 | ||
0876f84a | 4506 | /* Read a single character from the remote end. */ |
c906108c SS |
4507 | |
4508 | static int | |
fba45db2 | 4509 | readchar (int timeout) |
c906108c SS |
4510 | { |
4511 | int ch; | |
4512 | ||
2cd58942 | 4513 | ch = serial_readchar (remote_desc, timeout); |
c906108c | 4514 | |
2acceee2 | 4515 | if (ch >= 0) |
0876f84a | 4516 | return ch; |
2acceee2 JM |
4517 | |
4518 | switch ((enum serial_rc) ch) | |
c906108c SS |
4519 | { |
4520 | case SERIAL_EOF: | |
2acceee2 | 4521 | target_mourn_inferior (); |
8a3fe4f8 | 4522 | error (_("Remote connection closed")); |
2acceee2 | 4523 | /* no return */ |
c906108c | 4524 | case SERIAL_ERROR: |
e2e0b3e5 | 4525 | perror_with_name (_("Remote communication error")); |
2acceee2 | 4526 | /* no return */ |
c906108c | 4527 | case SERIAL_TIMEOUT: |
2acceee2 | 4528 | break; |
c906108c | 4529 | } |
2acceee2 | 4530 | return ch; |
c906108c SS |
4531 | } |
4532 | ||
6d820c5c DJ |
4533 | /* Send the command in *BUF to the remote machine, and read the reply |
4534 | into *BUF. Report an error if we get an error reply. Resize | |
4535 | *BUF using xrealloc if necessary to hold the result, and update | |
4536 | *SIZEOF_BUF. */ | |
c906108c SS |
4537 | |
4538 | static void | |
6d820c5c DJ |
4539 | remote_send (char **buf, |
4540 | long *sizeof_buf) | |
c906108c | 4541 | { |
6d820c5c | 4542 | putpkt (*buf); |
c2d11a7d | 4543 | getpkt (buf, sizeof_buf, 0); |
c906108c | 4544 | |
6d820c5c DJ |
4545 | if ((*buf)[0] == 'E') |
4546 | error (_("Remote failure reply: %s"), *buf); | |
c906108c SS |
4547 | } |
4548 | ||
4549 | /* Display a null-terminated packet on stdout, for debugging, using C | |
4550 | string notation. */ | |
4551 | ||
4552 | static void | |
fba45db2 | 4553 | print_packet (char *buf) |
c906108c SS |
4554 | { |
4555 | puts_filtered ("\""); | |
43e526b9 | 4556 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
4557 | puts_filtered ("\""); |
4558 | } | |
4559 | ||
4560 | int | |
fba45db2 | 4561 | putpkt (char *buf) |
c906108c SS |
4562 | { |
4563 | return putpkt_binary (buf, strlen (buf)); | |
4564 | } | |
4565 | ||
4566 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 4567 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 4568 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
4569 | and for a possible /0 if we are debugging (remote_debug) and want |
4570 | to print the sent packet as a string. */ | |
c906108c SS |
4571 | |
4572 | static int | |
fba45db2 | 4573 | putpkt_binary (char *buf, int cnt) |
c906108c SS |
4574 | { |
4575 | int i; | |
4576 | unsigned char csum = 0; | |
11cf8741 | 4577 | char *buf2 = alloca (cnt + 6); |
085dd6e6 | 4578 | |
c906108c SS |
4579 | int ch; |
4580 | int tcount = 0; | |
4581 | char *p; | |
4582 | ||
4583 | /* Copy the packet into buffer BUF2, encapsulating it | |
4584 | and giving it a checksum. */ | |
4585 | ||
c906108c SS |
4586 | p = buf2; |
4587 | *p++ = '$'; | |
4588 | ||
4589 | for (i = 0; i < cnt; i++) | |
4590 | { | |
4591 | csum += buf[i]; | |
4592 | *p++ = buf[i]; | |
4593 | } | |
4594 | *p++ = '#'; | |
4595 | *p++ = tohex ((csum >> 4) & 0xf); | |
4596 | *p++ = tohex (csum & 0xf); | |
4597 | ||
4598 | /* Send it over and over until we get a positive ack. */ | |
4599 | ||
4600 | while (1) | |
4601 | { | |
4602 | int started_error_output = 0; | |
4603 | ||
4604 | if (remote_debug) | |
4605 | { | |
4606 | *p = '\0'; | |
43e526b9 JM |
4607 | fprintf_unfiltered (gdb_stdlog, "Sending packet: "); |
4608 | fputstrn_unfiltered (buf2, p - buf2, 0, gdb_stdlog); | |
d4f3574e | 4609 | fprintf_unfiltered (gdb_stdlog, "..."); |
0f71a2f6 | 4610 | gdb_flush (gdb_stdlog); |
c906108c | 4611 | } |
2cd58942 | 4612 | if (serial_write (remote_desc, buf2, p - buf2)) |
e2e0b3e5 | 4613 | perror_with_name (_("putpkt: write failed")); |
c906108c | 4614 | |
23860348 | 4615 | /* Read until either a timeout occurs (-2) or '+' is read. */ |
c906108c SS |
4616 | while (1) |
4617 | { | |
4618 | ch = readchar (remote_timeout); | |
4619 | ||
c5aa993b | 4620 | if (remote_debug) |
c906108c SS |
4621 | { |
4622 | switch (ch) | |
4623 | { | |
4624 | case '+': | |
1216fa2c | 4625 | case '-': |
c906108c SS |
4626 | case SERIAL_TIMEOUT: |
4627 | case '$': | |
4628 | if (started_error_output) | |
4629 | { | |
4630 | putchar_unfiltered ('\n'); | |
4631 | started_error_output = 0; | |
4632 | } | |
4633 | } | |
4634 | } | |
4635 | ||
4636 | switch (ch) | |
4637 | { | |
4638 | case '+': | |
4639 | if (remote_debug) | |
0f71a2f6 | 4640 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 4641 | return 1; |
1216fa2c AC |
4642 | case '-': |
4643 | if (remote_debug) | |
4644 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
c906108c | 4645 | case SERIAL_TIMEOUT: |
c5aa993b | 4646 | tcount++; |
c906108c SS |
4647 | if (tcount > 3) |
4648 | return 0; | |
23860348 | 4649 | break; /* Retransmit buffer. */ |
c906108c SS |
4650 | case '$': |
4651 | { | |
40e3f985 | 4652 | if (remote_debug) |
2bc416ba | 4653 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 4654 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
4655 | /* It's probably an old response sent because an ACK |
4656 | was lost. Gobble up the packet and ack it so it | |
4657 | doesn't get retransmitted when we resend this | |
4658 | packet. */ | |
6d820c5c | 4659 | skip_frame (); |
d6f7abdf | 4660 | serial_write (remote_desc, "+", 1); |
23860348 | 4661 | continue; /* Now, go look for +. */ |
c906108c SS |
4662 | } |
4663 | default: | |
4664 | if (remote_debug) | |
4665 | { | |
4666 | if (!started_error_output) | |
4667 | { | |
4668 | started_error_output = 1; | |
0f71a2f6 | 4669 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 4670 | } |
0f71a2f6 | 4671 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
4672 | } |
4673 | continue; | |
4674 | } | |
23860348 | 4675 | break; /* Here to retransmit. */ |
c906108c SS |
4676 | } |
4677 | ||
4678 | #if 0 | |
4679 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
4680 | able to get out next time we call QUIT, without anything as |
4681 | violent as interrupt_query. If we want to provide a way out of | |
4682 | here without getting to the next QUIT, it should be based on | |
4683 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
4684 | if (quit_flag) |
4685 | { | |
4686 | quit_flag = 0; | |
4687 | interrupt_query (); | |
4688 | } | |
4689 | #endif | |
4690 | } | |
4691 | } | |
4692 | ||
6d820c5c DJ |
4693 | /* Come here after finding the start of a frame when we expected an |
4694 | ack. Do our best to discard the rest of this packet. */ | |
4695 | ||
4696 | static void | |
4697 | skip_frame (void) | |
4698 | { | |
4699 | int c; | |
4700 | ||
4701 | while (1) | |
4702 | { | |
4703 | c = readchar (remote_timeout); | |
4704 | switch (c) | |
4705 | { | |
4706 | case SERIAL_TIMEOUT: | |
4707 | /* Nothing we can do. */ | |
4708 | return; | |
4709 | case '#': | |
4710 | /* Discard the two bytes of checksum and stop. */ | |
4711 | c = readchar (remote_timeout); | |
4712 | if (c >= 0) | |
4713 | c = readchar (remote_timeout); | |
4714 | ||
4715 | return; | |
4716 | case '*': /* Run length encoding. */ | |
4717 | /* Discard the repeat count. */ | |
4718 | c = readchar (remote_timeout); | |
4719 | if (c < 0) | |
4720 | return; | |
4721 | break; | |
4722 | default: | |
4723 | /* A regular character. */ | |
4724 | break; | |
4725 | } | |
4726 | } | |
4727 | } | |
4728 | ||
c906108c | 4729 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
4730 | into *BUF, verifying the checksum, length, and handling run-length |
4731 | compression. NUL terminate the buffer. If there is not enough room, | |
4732 | expand *BUF using xrealloc. | |
c906108c | 4733 | |
c2d11a7d JM |
4734 | Returns -1 on error, number of characters in buffer (ignoring the |
4735 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 4736 | SERIAL status indications). */ |
c2d11a7d JM |
4737 | |
4738 | static long | |
6d820c5c DJ |
4739 | read_frame (char **buf_p, |
4740 | long *sizeof_buf) | |
c906108c SS |
4741 | { |
4742 | unsigned char csum; | |
c2d11a7d | 4743 | long bc; |
c906108c | 4744 | int c; |
6d820c5c | 4745 | char *buf = *buf_p; |
c906108c SS |
4746 | |
4747 | csum = 0; | |
c2d11a7d | 4748 | bc = 0; |
c906108c SS |
4749 | |
4750 | while (1) | |
4751 | { | |
4752 | c = readchar (remote_timeout); | |
c906108c SS |
4753 | switch (c) |
4754 | { | |
4755 | case SERIAL_TIMEOUT: | |
4756 | if (remote_debug) | |
0f71a2f6 | 4757 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 4758 | return -1; |
c906108c SS |
4759 | case '$': |
4760 | if (remote_debug) | |
0f71a2f6 JM |
4761 | fputs_filtered ("Saw new packet start in middle of old one\n", |
4762 | gdb_stdlog); | |
23860348 | 4763 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
4764 | case '#': |
4765 | { | |
4766 | unsigned char pktcsum; | |
e1b09194 AC |
4767 | int check_0 = 0; |
4768 | int check_1 = 0; | |
c906108c | 4769 | |
c2d11a7d | 4770 | buf[bc] = '\0'; |
c906108c | 4771 | |
e1b09194 AC |
4772 | check_0 = readchar (remote_timeout); |
4773 | if (check_0 >= 0) | |
4774 | check_1 = readchar (remote_timeout); | |
802188a7 | 4775 | |
e1b09194 AC |
4776 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
4777 | { | |
4778 | if (remote_debug) | |
2bc416ba | 4779 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 4780 | gdb_stdlog); |
e1b09194 AC |
4781 | return -1; |
4782 | } | |
4783 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
4784 | { |
4785 | if (remote_debug) | |
2bc416ba | 4786 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 4787 | gdb_stdlog); |
40e3f985 FN |
4788 | return -1; |
4789 | } | |
c906108c | 4790 | |
e1b09194 | 4791 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 4792 | if (csum == pktcsum) |
c2d11a7d | 4793 | return bc; |
c906108c | 4794 | |
c5aa993b | 4795 | if (remote_debug) |
c906108c | 4796 | { |
0f71a2f6 | 4797 | fprintf_filtered (gdb_stdlog, |
c5aa993b | 4798 | "Bad checksum, sentsum=0x%x, csum=0x%x, buf=", |
0f71a2f6 | 4799 | pktcsum, csum); |
0876f84a | 4800 | fputstrn_filtered (buf, bc, 0, gdb_stdlog); |
0f71a2f6 | 4801 | fputs_filtered ("\n", gdb_stdlog); |
c906108c | 4802 | } |
c2d11a7d | 4803 | /* Number of characters in buffer ignoring trailing |
23860348 | 4804 | NULL. */ |
c2d11a7d | 4805 | return -1; |
c906108c | 4806 | } |
23860348 | 4807 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
4808 | { |
4809 | int repeat; | |
4810 | csum += c; | |
c906108c | 4811 | |
b4501125 AC |
4812 | c = readchar (remote_timeout); |
4813 | csum += c; | |
23860348 | 4814 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 4815 | |
23860348 | 4816 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 4817 | |
6d820c5c | 4818 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 4819 | { |
6d820c5c DJ |
4820 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
4821 | { | |
4822 | /* Make some more room in the buffer. */ | |
4823 | *sizeof_buf += repeat; | |
4824 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
4825 | buf = *buf_p; | |
4826 | } | |
4827 | ||
c2d11a7d JM |
4828 | memset (&buf[bc], buf[bc - 1], repeat); |
4829 | bc += repeat; | |
c2c6d25f JM |
4830 | continue; |
4831 | } | |
4832 | ||
c2d11a7d | 4833 | buf[bc] = '\0'; |
6d820c5c | 4834 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 4835 | return -1; |
c2c6d25f | 4836 | } |
c906108c | 4837 | default: |
6d820c5c | 4838 | if (bc >= *sizeof_buf - 1) |
c906108c | 4839 | { |
6d820c5c DJ |
4840 | /* Make some more room in the buffer. */ |
4841 | *sizeof_buf *= 2; | |
4842 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
4843 | buf = *buf_p; | |
c906108c SS |
4844 | } |
4845 | ||
6d820c5c DJ |
4846 | buf[bc++] = c; |
4847 | csum += c; | |
4848 | continue; | |
c906108c SS |
4849 | } |
4850 | } | |
4851 | } | |
4852 | ||
4853 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
4854 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
4855 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
4856 | rather than timing out; this is used (in synchronous mode) to wait | |
4857 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
4858 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
4859 | don't have to change all the calls to getpkt to deal with the | |
4860 | return value, because at the moment I don't know what the right | |
23860348 | 4861 | thing to do it for those. */ |
c906108c | 4862 | void |
6d820c5c DJ |
4863 | getpkt (char **buf, |
4864 | long *sizeof_buf, | |
c2d11a7d | 4865 | int forever) |
d9fcf2fb JM |
4866 | { |
4867 | int timed_out; | |
4868 | ||
4869 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
4870 | } | |
4871 | ||
4872 | ||
4873 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
4874 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
4875 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
4876 | rather than timing out; this is used (in synchronous mode) to wait | |
4877 | for a target that is is executing user code to stop. If FOREVER == | |
4878 | 0, this function is allowed to time out gracefully and return an | |
0876f84a DJ |
4879 | indication of this to the caller. Otherwise return the number |
4880 | of bytes read. */ | |
3172dc30 | 4881 | static int |
6d820c5c | 4882 | getpkt_sane (char **buf, long *sizeof_buf, int forever) |
c906108c SS |
4883 | { |
4884 | int c; | |
4885 | int tries; | |
4886 | int timeout; | |
4887 | int val; | |
4888 | ||
6d820c5c | 4889 | strcpy (*buf, "timeout"); |
c906108c SS |
4890 | |
4891 | if (forever) | |
4892 | { | |
c906108c | 4893 | timeout = watchdog > 0 ? watchdog : -1; |
c906108c SS |
4894 | } |
4895 | ||
4896 | else | |
4897 | timeout = remote_timeout; | |
4898 | ||
4899 | #define MAX_TRIES 3 | |
4900 | ||
4901 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
4902 | { | |
4903 | /* This can loop forever if the remote side sends us characters | |
23860348 MS |
4904 | continuously, but if it pauses, we'll get a zero from |
4905 | readchar because of timeout. Then we'll count that as a | |
4906 | retry. */ | |
c906108c | 4907 | |
23860348 MS |
4908 | /* Note that we will only wait forever prior to the start of a |
4909 | packet. After that, we expect characters to arrive at a | |
4910 | brisk pace. They should show up within remote_timeout | |
4911 | intervals. */ | |
c906108c SS |
4912 | |
4913 | do | |
4914 | { | |
4915 | c = readchar (timeout); | |
4916 | ||
4917 | if (c == SERIAL_TIMEOUT) | |
4918 | { | |
23860348 | 4919 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 4920 | { |
2acceee2 | 4921 | QUIT; |
c906108c | 4922 | target_mourn_inferior (); |
8a3fe4f8 | 4923 | error (_("Watchdog has expired. Target detached.")); |
c906108c | 4924 | } |
c906108c | 4925 | if (remote_debug) |
0f71a2f6 | 4926 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c SS |
4927 | goto retry; |
4928 | } | |
4929 | } | |
4930 | while (c != '$'); | |
4931 | ||
4932 | /* We've found the start of a packet, now collect the data. */ | |
4933 | ||
c2d11a7d | 4934 | val = read_frame (buf, sizeof_buf); |
c906108c | 4935 | |
c2d11a7d | 4936 | if (val >= 0) |
c906108c SS |
4937 | { |
4938 | if (remote_debug) | |
43e526b9 JM |
4939 | { |
4940 | fprintf_unfiltered (gdb_stdlog, "Packet received: "); | |
0876f84a | 4941 | fputstrn_unfiltered (*buf, val, 0, gdb_stdlog); |
43e526b9 JM |
4942 | fprintf_unfiltered (gdb_stdlog, "\n"); |
4943 | } | |
2cd58942 | 4944 | serial_write (remote_desc, "+", 1); |
0876f84a | 4945 | return val; |
c906108c SS |
4946 | } |
4947 | ||
4948 | /* Try the whole thing again. */ | |
4949 | retry: | |
2cd58942 | 4950 | serial_write (remote_desc, "-", 1); |
c906108c SS |
4951 | } |
4952 | ||
2bc416ba | 4953 | /* We have tried hard enough, and just can't receive the packet. |
23860348 | 4954 | Give up. */ |
c906108c | 4955 | |
a3f17187 | 4956 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); |
2cd58942 | 4957 | serial_write (remote_desc, "+", 1); |
0876f84a | 4958 | return -1; |
c906108c SS |
4959 | } |
4960 | \f | |
4961 | static void | |
fba45db2 | 4962 | remote_kill (void) |
c906108c SS |
4963 | { |
4964 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4965 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4966 | if (kill_kludge) | |
4967 | { | |
4968 | kill_kludge = 0; | |
4969 | target_mourn_inferior (); | |
4970 | return; | |
4971 | } | |
4972 | ||
4973 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
4974 | speaking terms with the remote system. */ | |
c5aa993b | 4975 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
c906108c SS |
4976 | |
4977 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4978 | we do or not. For the existing stubs, kill is a noop. */ | |
4979 | target_mourn_inferior (); | |
4980 | } | |
4981 | ||
23860348 | 4982 | /* Async version of remote_kill. */ |
43ff13b4 | 4983 | static void |
fba45db2 | 4984 | remote_async_kill (void) |
43ff13b4 | 4985 | { |
23860348 | 4986 | /* Unregister the file descriptor from the event loop. */ |
ed9a39eb | 4987 | if (target_is_async_p ()) |
2cd58942 | 4988 | serial_async (remote_desc, NULL, 0); |
43ff13b4 JM |
4989 | |
4990 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4991 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4992 | if (kill_kludge) | |
4993 | { | |
4994 | kill_kludge = 0; | |
4995 | target_mourn_inferior (); | |
4996 | return; | |
4997 | } | |
4998 | ||
23860348 MS |
4999 | /* Use catch_errors so the user can quit from gdb even when we |
5000 | aren't on speaking terms with the remote system. */ | |
c5aa993b | 5001 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
5002 | |
5003 | /* Don't wait for it to die. I'm not really sure it matters whether | |
5004 | we do or not. For the existing stubs, kill is a noop. */ | |
5005 | target_mourn_inferior (); | |
5006 | } | |
5007 | ||
c906108c | 5008 | static void |
fba45db2 | 5009 | remote_mourn (void) |
c906108c SS |
5010 | { |
5011 | remote_mourn_1 (&remote_ops); | |
5012 | } | |
5013 | ||
53a5351d | 5014 | static void |
fba45db2 | 5015 | remote_async_mourn (void) |
53a5351d JM |
5016 | { |
5017 | remote_mourn_1 (&remote_async_ops); | |
5018 | } | |
5019 | ||
c906108c | 5020 | static void |
fba45db2 | 5021 | extended_remote_mourn (void) |
c906108c SS |
5022 | { |
5023 | /* We do _not_ want to mourn the target like this; this will | |
5024 | remove the extended remote target from the target stack, | |
802188a7 | 5025 | and the next time the user says "run" it'll fail. |
c906108c SS |
5026 | |
5027 | FIXME: What is the right thing to do here? */ | |
5028 | #if 0 | |
5029 | remote_mourn_1 (&extended_remote_ops); | |
5030 | #endif | |
5031 | } | |
5032 | ||
5033 | /* Worker function for remote_mourn. */ | |
5034 | static void | |
fba45db2 | 5035 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
5036 | { |
5037 | unpush_target (target); | |
5038 | generic_mourn_inferior (); | |
5039 | } | |
5040 | ||
5041 | /* In the extended protocol we want to be able to do things like | |
5042 | "run" and have them basically work as expected. So we need | |
802188a7 | 5043 | a special create_inferior function. |
c906108c SS |
5044 | |
5045 | FIXME: One day add support for changing the exec file | |
5046 | we're debugging, arguments and an environment. */ | |
5047 | ||
5048 | static void | |
23860348 MS |
5049 | extended_remote_create_inferior (char *exec_file, char *args, |
5050 | char **env, int from_tty) | |
c906108c SS |
5051 | { |
5052 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
5053 | the remote server. */ | |
5054 | remove_breakpoints (); | |
5055 | ||
5056 | /* Now restart the remote server. */ | |
5057 | extended_remote_restart (); | |
5058 | ||
424163ea DJ |
5059 | /* NOTE: We don't need to recheck for a target description here; but |
5060 | if we gain the ability to switch the remote executable we may | |
5061 | need to, if for instance we are running a process which requested | |
5062 | different emulated hardware from the operating system. A | |
5063 | concrete example of this is ARM GNU/Linux, where some binaries | |
5064 | will have a legacy FPA coprocessor emulated and others may have | |
5065 | access to a hardware VFP unit. */ | |
5066 | ||
c906108c SS |
5067 | /* Now put the breakpoints back in. This way we're safe if the |
5068 | restart function works via a unix fork on the remote side. */ | |
5069 | insert_breakpoints (); | |
5070 | ||
5071 | /* Clean up from the last time we were running. */ | |
5072 | clear_proceed_status (); | |
c906108c SS |
5073 | } |
5074 | ||
23860348 | 5075 | /* Async version of extended_remote_create_inferior. */ |
43ff13b4 | 5076 | static void |
23860348 MS |
5077 | extended_remote_async_create_inferior (char *exec_file, char *args, |
5078 | char **env, int from_tty) | |
43ff13b4 JM |
5079 | { |
5080 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
5081 | the remote server. */ | |
5082 | remove_breakpoints (); | |
5083 | ||
5084 | /* If running asynchronously, register the target file descriptor | |
23860348 | 5085 | with the event loop. */ |
362646f5 | 5086 | if (target_can_async_p ()) |
2acceee2 | 5087 | target_async (inferior_event_handler, 0); |
43ff13b4 JM |
5088 | |
5089 | /* Now restart the remote server. */ | |
5090 | extended_remote_restart (); | |
5091 | ||
424163ea DJ |
5092 | /* NOTE: We don't need to recheck for a target description here; but |
5093 | if we gain the ability to switch the remote executable we may | |
5094 | need to, if for instance we are running a process which requested | |
5095 | different emulated hardware from the operating system. A | |
5096 | concrete example of this is ARM GNU/Linux, where some binaries | |
5097 | will have a legacy FPA coprocessor emulated and others may have | |
5098 | access to a hardware VFP unit. */ | |
5099 | ||
43ff13b4 JM |
5100 | /* Now put the breakpoints back in. This way we're safe if the |
5101 | restart function works via a unix fork on the remote side. */ | |
5102 | insert_breakpoints (); | |
5103 | ||
5104 | /* Clean up from the last time we were running. */ | |
5105 | clear_proceed_status (); | |
43ff13b4 | 5106 | } |
c906108c | 5107 | \f |
c5aa993b | 5108 | |
8181d85f DJ |
5109 | /* Insert a breakpoint. On targets that have software breakpoint |
5110 | support, we ask the remote target to do the work; on targets | |
5111 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c SS |
5112 | |
5113 | static int | |
8181d85f | 5114 | remote_insert_breakpoint (struct bp_target_info *bp_tgt) |
c906108c | 5115 | { |
8181d85f | 5116 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 5117 | struct remote_state *rs = get_remote_state (); |
96baa820 | 5118 | |
d471ea57 AC |
5119 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
5120 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
5121 | fails, and the user has explicitly requested the Z support then | |
23860348 | 5122 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 5123 | |
444abaca | 5124 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 5125 | { |
6d820c5c | 5126 | char *p = rs->buf; |
802188a7 | 5127 | |
96baa820 JM |
5128 | *(p++) = 'Z'; |
5129 | *(p++) = '0'; | |
5130 | *(p++) = ','; | |
3b3b875c UW |
5131 | gdbarch_breakpoint_from_pc |
5132 | (current_gdbarch, &bp_tgt->placed_address, &bp_tgt->placed_size); | |
8181d85f DJ |
5133 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
5134 | p += hexnumstr (p, addr); | |
5135 | sprintf (p, ",%d", bp_tgt->placed_size); | |
802188a7 | 5136 | |
6d820c5c DJ |
5137 | putpkt (rs->buf); |
5138 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5139 | |
6d820c5c | 5140 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 5141 | { |
d471ea57 AC |
5142 | case PACKET_ERROR: |
5143 | return -1; | |
5144 | case PACKET_OK: | |
5145 | return 0; | |
5146 | case PACKET_UNKNOWN: | |
5147 | break; | |
96baa820 JM |
5148 | } |
5149 | } | |
c906108c | 5150 | |
8181d85f | 5151 | return memory_insert_breakpoint (bp_tgt); |
c906108c SS |
5152 | } |
5153 | ||
5154 | static int | |
8181d85f | 5155 | remote_remove_breakpoint (struct bp_target_info *bp_tgt) |
c906108c | 5156 | { |
8181d85f | 5157 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 5158 | struct remote_state *rs = get_remote_state (); |
96baa820 JM |
5159 | int bp_size; |
5160 | ||
444abaca | 5161 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 5162 | { |
6d820c5c | 5163 | char *p = rs->buf; |
802188a7 | 5164 | |
96baa820 JM |
5165 | *(p++) = 'z'; |
5166 | *(p++) = '0'; | |
5167 | *(p++) = ','; | |
5168 | ||
8181d85f DJ |
5169 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
5170 | p += hexnumstr (p, addr); | |
5171 | sprintf (p, ",%d", bp_tgt->placed_size); | |
802188a7 | 5172 | |
6d820c5c DJ |
5173 | putpkt (rs->buf); |
5174 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5175 | |
6d820c5c | 5176 | return (rs->buf[0] == 'E'); |
96baa820 JM |
5177 | } |
5178 | ||
8181d85f | 5179 | return memory_remove_breakpoint (bp_tgt); |
c906108c SS |
5180 | } |
5181 | ||
d471ea57 AC |
5182 | static int |
5183 | watchpoint_to_Z_packet (int type) | |
5184 | { | |
5185 | switch (type) | |
5186 | { | |
5187 | case hw_write: | |
bb858e6a | 5188 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
5189 | break; |
5190 | case hw_read: | |
bb858e6a | 5191 | return Z_PACKET_READ_WP; |
d471ea57 AC |
5192 | break; |
5193 | case hw_access: | |
bb858e6a | 5194 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
5195 | break; |
5196 | default: | |
8e65ff28 | 5197 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5198 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
5199 | } |
5200 | } | |
5201 | ||
3c3bea1c | 5202 | static int |
fba45db2 | 5203 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 5204 | { |
d01949b6 | 5205 | struct remote_state *rs = get_remote_state (); |
e514a9d6 | 5206 | char *p; |
d471ea57 | 5207 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 5208 | |
444abaca | 5209 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
5cffb350 | 5210 | return -1; |
802188a7 | 5211 | |
6d820c5c DJ |
5212 | sprintf (rs->buf, "Z%x,", packet); |
5213 | p = strchr (rs->buf, '\0'); | |
96baa820 JM |
5214 | addr = remote_address_masked (addr); |
5215 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 5216 | sprintf (p, ",%x", len); |
802188a7 | 5217 | |
6d820c5c DJ |
5218 | putpkt (rs->buf); |
5219 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5220 | |
6d820c5c | 5221 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
5222 | { |
5223 | case PACKET_ERROR: | |
5224 | case PACKET_UNKNOWN: | |
5225 | return -1; | |
5226 | case PACKET_OK: | |
5227 | return 0; | |
5228 | } | |
8e65ff28 | 5229 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5230 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
5231 | } |
5232 | ||
d471ea57 | 5233 | |
3c3bea1c | 5234 | static int |
fba45db2 | 5235 | remote_remove_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 5236 | { |
d01949b6 | 5237 | struct remote_state *rs = get_remote_state (); |
e514a9d6 | 5238 | char *p; |
d471ea57 AC |
5239 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
5240 | ||
444abaca | 5241 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
5cffb350 | 5242 | return -1; |
802188a7 | 5243 | |
6d820c5c DJ |
5244 | sprintf (rs->buf, "z%x,", packet); |
5245 | p = strchr (rs->buf, '\0'); | |
96baa820 JM |
5246 | addr = remote_address_masked (addr); |
5247 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 5248 | sprintf (p, ",%x", len); |
6d820c5c DJ |
5249 | putpkt (rs->buf); |
5250 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5251 | |
6d820c5c | 5252 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
5253 | { |
5254 | case PACKET_ERROR: | |
5255 | case PACKET_UNKNOWN: | |
5256 | return -1; | |
5257 | case PACKET_OK: | |
5258 | return 0; | |
5259 | } | |
8e65ff28 | 5260 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5261 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
5262 | } |
5263 | ||
3c3bea1c | 5264 | |
501eef12 AC |
5265 | int remote_hw_watchpoint_limit = -1; |
5266 | int remote_hw_breakpoint_limit = -1; | |
d471ea57 | 5267 | |
b9362cc7 | 5268 | static int |
3c3bea1c | 5269 | remote_check_watch_resources (int type, int cnt, int ot) |
96baa820 | 5270 | { |
3c3bea1c GS |
5271 | if (type == bp_hardware_breakpoint) |
5272 | { | |
5273 | if (remote_hw_breakpoint_limit == 0) | |
5274 | return 0; | |
501eef12 AC |
5275 | else if (remote_hw_breakpoint_limit < 0) |
5276 | return 1; | |
3c3bea1c GS |
5277 | else if (cnt <= remote_hw_breakpoint_limit) |
5278 | return 1; | |
5279 | } | |
5280 | else | |
5281 | { | |
5282 | if (remote_hw_watchpoint_limit == 0) | |
5283 | return 0; | |
501eef12 AC |
5284 | else if (remote_hw_watchpoint_limit < 0) |
5285 | return 1; | |
3c3bea1c GS |
5286 | else if (ot) |
5287 | return -1; | |
5288 | else if (cnt <= remote_hw_watchpoint_limit) | |
5289 | return 1; | |
5290 | } | |
5291 | return -1; | |
5292 | } | |
5293 | ||
b9362cc7 | 5294 | static int |
3c3bea1c GS |
5295 | remote_stopped_by_watchpoint (void) |
5296 | { | |
5297 | return remote_stopped_by_watchpoint_p; | |
5298 | } | |
5299 | ||
7270d8f2 OF |
5300 | extern int stepped_after_stopped_by_watchpoint; |
5301 | ||
4aa7a7f5 JJ |
5302 | static int |
5303 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 5304 | { |
4aa7a7f5 | 5305 | int rc = 0; |
7270d8f2 OF |
5306 | if (remote_stopped_by_watchpoint () |
5307 | || stepped_after_stopped_by_watchpoint) | |
4aa7a7f5 JJ |
5308 | { |
5309 | *addr_p = remote_watch_data_address; | |
5310 | rc = 1; | |
5311 | } | |
5312 | ||
5313 | return rc; | |
3c3bea1c GS |
5314 | } |
5315 | ||
5316 | ||
5317 | static int | |
8181d85f | 5318 | remote_insert_hw_breakpoint (struct bp_target_info *bp_tgt) |
3c3bea1c | 5319 | { |
8181d85f | 5320 | CORE_ADDR addr; |
d01949b6 | 5321 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 5322 | char *p = rs->buf; |
802188a7 | 5323 | |
c8189ed1 | 5324 | /* The length field should be set to the size of a breakpoint |
8181d85f | 5325 | instruction, even though we aren't inserting one ourselves. */ |
c8189ed1 | 5326 | |
3b3b875c UW |
5327 | gdbarch_breakpoint_from_pc |
5328 | (current_gdbarch, &bp_tgt->placed_address, &bp_tgt->placed_size); | |
3c3bea1c | 5329 | |
444abaca | 5330 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 5331 | return -1; |
2bc416ba | 5332 | |
96baa820 JM |
5333 | *(p++) = 'Z'; |
5334 | *(p++) = '1'; | |
5335 | *(p++) = ','; | |
802188a7 | 5336 | |
8181d85f | 5337 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 5338 | p += hexnumstr (p, (ULONGEST) addr); |
8181d85f | 5339 | sprintf (p, ",%x", bp_tgt->placed_size); |
96baa820 | 5340 | |
6d820c5c DJ |
5341 | putpkt (rs->buf); |
5342 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5343 | |
6d820c5c | 5344 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
5345 | { |
5346 | case PACKET_ERROR: | |
5347 | case PACKET_UNKNOWN: | |
5348 | return -1; | |
5349 | case PACKET_OK: | |
5350 | return 0; | |
5351 | } | |
8e65ff28 | 5352 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5353 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
5354 | } |
5355 | ||
d471ea57 | 5356 | |
802188a7 | 5357 | static int |
8181d85f | 5358 | remote_remove_hw_breakpoint (struct bp_target_info *bp_tgt) |
96baa820 | 5359 | { |
8181d85f | 5360 | CORE_ADDR addr; |
d01949b6 | 5361 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 5362 | char *p = rs->buf; |
c8189ed1 | 5363 | |
444abaca | 5364 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 5365 | return -1; |
802188a7 | 5366 | |
96baa820 JM |
5367 | *(p++) = 'z'; |
5368 | *(p++) = '1'; | |
5369 | *(p++) = ','; | |
802188a7 | 5370 | |
8181d85f | 5371 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 5372 | p += hexnumstr (p, (ULONGEST) addr); |
8181d85f | 5373 | sprintf (p, ",%x", bp_tgt->placed_size); |
96baa820 | 5374 | |
6d820c5c DJ |
5375 | putpkt (rs->buf); |
5376 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 5377 | |
6d820c5c | 5378 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
5379 | { |
5380 | case PACKET_ERROR: | |
5381 | case PACKET_UNKNOWN: | |
5382 | return -1; | |
5383 | case PACKET_OK: | |
5384 | return 0; | |
5385 | } | |
8e65ff28 | 5386 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5387 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 5388 | } |
96baa820 | 5389 | |
c906108c SS |
5390 | /* Some targets are only capable of doing downloads, and afterwards |
5391 | they switch to the remote serial protocol. This function provides | |
5392 | a clean way to get from the download target to the remote target. | |
5393 | It's basically just a wrapper so that we don't have to expose any | |
5394 | of the internal workings of remote.c. | |
5395 | ||
5396 | Prior to calling this routine, you should shutdown the current | |
5397 | target code, else you will get the "A program is being debugged | |
5398 | already..." message. Usually a call to pop_target() suffices. */ | |
5399 | ||
5400 | void | |
fba45db2 | 5401 | push_remote_target (char *name, int from_tty) |
c906108c | 5402 | { |
a3f17187 | 5403 | printf_filtered (_("Switching to remote protocol\n")); |
c906108c SS |
5404 | remote_open (name, from_tty); |
5405 | } | |
5406 | ||
23860348 | 5407 | /* Table used by the crc32 function to calcuate the checksum. */ |
c906108c | 5408 | |
c5aa993b JM |
5409 | static unsigned long crc32_table[256] = |
5410 | {0, 0}; | |
c906108c SS |
5411 | |
5412 | static unsigned long | |
fba45db2 | 5413 | crc32 (unsigned char *buf, int len, unsigned int crc) |
c906108c | 5414 | { |
c5aa993b | 5415 | if (!crc32_table[1]) |
c906108c | 5416 | { |
23860348 | 5417 | /* Initialize the CRC table and the decoding table. */ |
c906108c SS |
5418 | int i, j; |
5419 | unsigned int c; | |
5420 | ||
5421 | for (i = 0; i < 256; i++) | |
c5aa993b JM |
5422 | { |
5423 | for (c = i << 24, j = 8; j > 0; --j) | |
5424 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
5425 | crc32_table[i] = c; | |
5426 | } | |
c906108c SS |
5427 | } |
5428 | ||
5429 | while (len--) | |
5430 | { | |
5431 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |
5432 | buf++; | |
5433 | } | |
5434 | return crc; | |
5435 | } | |
5436 | ||
5437 | /* compare-sections command | |
5438 | ||
5439 | With no arguments, compares each loadable section in the exec bfd | |
5440 | with the same memory range on the target, and reports mismatches. | |
5441 | Useful for verifying the image on the target against the exec file. | |
5442 | Depends on the target understanding the new "qCRC:" request. */ | |
5443 | ||
e514a9d6 JM |
5444 | /* FIXME: cagney/1999-10-26: This command should be broken down into a |
5445 | target method (target verify memory) and generic version of the | |
5446 | actual command. This will allow other high-level code (especially | |
23860348 | 5447 | generic_load()) to make use of this target functionality. */ |
e514a9d6 | 5448 | |
c906108c | 5449 | static void |
fba45db2 | 5450 | compare_sections_command (char *args, int from_tty) |
c906108c | 5451 | { |
d01949b6 | 5452 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
5453 | asection *s; |
5454 | unsigned long host_crc, target_crc; | |
5455 | extern bfd *exec_bfd; | |
5456 | struct cleanup *old_chain; | |
085dd6e6 JM |
5457 | char *tmp; |
5458 | char *sectdata; | |
ce359b09 | 5459 | const char *sectname; |
c906108c SS |
5460 | bfd_size_type size; |
5461 | bfd_vma lma; | |
5462 | int matched = 0; | |
5463 | int mismatched = 0; | |
5464 | ||
5465 | if (!exec_bfd) | |
8a3fe4f8 | 5466 | error (_("command cannot be used without an exec file")); |
c906108c SS |
5467 | if (!current_target.to_shortname || |
5468 | strcmp (current_target.to_shortname, "remote") != 0) | |
8a3fe4f8 | 5469 | error (_("command can only be used with remote target")); |
c906108c | 5470 | |
c5aa993b | 5471 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
5472 | { |
5473 | if (!(s->flags & SEC_LOAD)) | |
c5aa993b | 5474 | continue; /* skip non-loadable section */ |
c906108c | 5475 | |
2c500098 | 5476 | size = bfd_get_section_size (s); |
c906108c | 5477 | if (size == 0) |
c5aa993b | 5478 | continue; /* skip zero-length section */ |
c906108c | 5479 | |
ce359b09 | 5480 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 5481 | if (args && strcmp (args, sectname) != 0) |
c5aa993b | 5482 | continue; /* not the section selected by user */ |
c906108c | 5483 | |
c5aa993b | 5484 | matched = 1; /* do this section */ |
c906108c | 5485 | lma = s->lma; |
23860348 | 5486 | /* FIXME: assumes lma can fit into long. */ |
ea9c271d | 5487 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", |
ecbc58df | 5488 | (long) lma, (long) size); |
6d820c5c | 5489 | putpkt (rs->buf); |
c906108c | 5490 | |
23860348 MS |
5491 | /* Be clever; compute the host_crc before waiting for target |
5492 | reply. */ | |
c906108c | 5493 | sectdata = xmalloc (size); |
b8c9b27d | 5494 | old_chain = make_cleanup (xfree, sectdata); |
c906108c SS |
5495 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
5496 | host_crc = crc32 ((unsigned char *) sectdata, size, 0xffffffff); | |
5497 | ||
6d820c5c DJ |
5498 | getpkt (&rs->buf, &rs->buf_size, 0); |
5499 | if (rs->buf[0] == 'E') | |
8a3fe4f8 | 5500 | error (_("target memory fault, section %s, range 0x%s -- 0x%s"), |
823ca731 | 5501 | sectname, paddr (lma), paddr (lma + size)); |
6d820c5c | 5502 | if (rs->buf[0] != 'C') |
8a3fe4f8 | 5503 | error (_("remote target does not support this operation")); |
c906108c | 5504 | |
6d820c5c | 5505 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) |
c906108c SS |
5506 | target_crc = target_crc * 16 + fromhex (*tmp); |
5507 | ||
d4f3574e SS |
5508 | printf_filtered ("Section %s, range 0x%s -- 0x%s: ", |
5509 | sectname, paddr (lma), paddr (lma + size)); | |
c906108c SS |
5510 | if (host_crc == target_crc) |
5511 | printf_filtered ("matched.\n"); | |
5512 | else | |
c5aa993b JM |
5513 | { |
5514 | printf_filtered ("MIS-MATCHED!\n"); | |
5515 | mismatched++; | |
5516 | } | |
c906108c SS |
5517 | |
5518 | do_cleanups (old_chain); | |
5519 | } | |
5520 | if (mismatched > 0) | |
8a3fe4f8 AC |
5521 | warning (_("One or more sections of the remote executable does not match\n\ |
5522 | the loaded file\n")); | |
c906108c | 5523 | if (args && !matched) |
a3f17187 | 5524 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
5525 | } |
5526 | ||
0e7f50da UW |
5527 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
5528 | into remote target. The number of bytes written to the remote | |
5529 | target is returned, or -1 for error. */ | |
5530 | ||
5531 | static LONGEST | |
5532 | remote_write_qxfer (struct target_ops *ops, const char *object_name, | |
5533 | const char *annex, const gdb_byte *writebuf, | |
5534 | ULONGEST offset, LONGEST len, | |
5535 | struct packet_config *packet) | |
5536 | { | |
5537 | int i, buf_len; | |
5538 | ULONGEST n; | |
5539 | gdb_byte *wbuf; | |
5540 | struct remote_state *rs = get_remote_state (); | |
5541 | int max_size = get_memory_write_packet_size (); | |
5542 | ||
5543 | if (packet->support == PACKET_DISABLE) | |
5544 | return -1; | |
5545 | ||
5546 | /* Insert header. */ | |
5547 | i = snprintf (rs->buf, max_size, | |
5548 | "qXfer:%s:write:%s:%s:", | |
5549 | object_name, annex ? annex : "", | |
5550 | phex_nz (offset, sizeof offset)); | |
5551 | max_size -= (i + 1); | |
5552 | ||
5553 | /* Escape as much data as fits into rs->buf. */ | |
5554 | buf_len = remote_escape_output | |
5555 | (writebuf, len, (rs->buf + i), &max_size, max_size); | |
5556 | ||
5557 | if (putpkt_binary (rs->buf, i + buf_len) < 0 | |
5558 | || getpkt_sane (&rs->buf, &rs->buf_size, 0) < 0 | |
5559 | || packet_ok (rs->buf, packet) != PACKET_OK) | |
5560 | return -1; | |
5561 | ||
5562 | unpack_varlen_hex (rs->buf, &n); | |
5563 | return n; | |
5564 | } | |
5565 | ||
0876f84a DJ |
5566 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
5567 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
5568 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
5569 | The number of bytes read may be less than LEN without indicating an | |
5570 | EOF. PACKET is checked and updated to indicate whether the remote | |
5571 | target supports this object. */ | |
5572 | ||
5573 | static LONGEST | |
5574 | remote_read_qxfer (struct target_ops *ops, const char *object_name, | |
5575 | const char *annex, | |
5576 | gdb_byte *readbuf, ULONGEST offset, LONGEST len, | |
5577 | struct packet_config *packet) | |
5578 | { | |
5579 | static char *finished_object; | |
5580 | static char *finished_annex; | |
5581 | static ULONGEST finished_offset; | |
5582 | ||
5583 | struct remote_state *rs = get_remote_state (); | |
5584 | unsigned int total = 0; | |
5585 | LONGEST i, n, packet_len; | |
5586 | ||
5587 | if (packet->support == PACKET_DISABLE) | |
5588 | return -1; | |
5589 | ||
5590 | /* Check whether we've cached an end-of-object packet that matches | |
5591 | this request. */ | |
5592 | if (finished_object) | |
5593 | { | |
5594 | if (strcmp (object_name, finished_object) == 0 | |
5595 | && strcmp (annex ? annex : "", finished_annex) == 0 | |
5596 | && offset == finished_offset) | |
5597 | return 0; | |
5598 | ||
5599 | /* Otherwise, we're now reading something different. Discard | |
5600 | the cache. */ | |
5601 | xfree (finished_object); | |
5602 | xfree (finished_annex); | |
5603 | finished_object = NULL; | |
5604 | finished_annex = NULL; | |
5605 | } | |
5606 | ||
5607 | /* Request only enough to fit in a single packet. The actual data | |
5608 | may not, since we don't know how much of it will need to be escaped; | |
5609 | the target is free to respond with slightly less data. We subtract | |
5610 | five to account for the response type and the protocol frame. */ | |
5611 | n = min (get_remote_packet_size () - 5, len); | |
5612 | snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s", | |
5613 | object_name, annex ? annex : "", | |
5614 | phex_nz (offset, sizeof offset), | |
5615 | phex_nz (n, sizeof n)); | |
5616 | i = putpkt (rs->buf); | |
5617 | if (i < 0) | |
5618 | return -1; | |
5619 | ||
5620 | rs->buf[0] = '\0'; | |
5621 | packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
5622 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) | |
5623 | return -1; | |
5624 | ||
5625 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
5626 | error (_("Unknown remote qXfer reply: %s"), rs->buf); | |
5627 | ||
5628 | /* 'm' means there is (or at least might be) more data after this | |
5629 | batch. That does not make sense unless there's at least one byte | |
5630 | of data in this reply. */ | |
5631 | if (rs->buf[0] == 'm' && packet_len == 1) | |
5632 | error (_("Remote qXfer reply contained no data.")); | |
5633 | ||
5634 | /* Got some data. */ | |
5635 | i = remote_unescape_input (rs->buf + 1, packet_len - 1, readbuf, n); | |
5636 | ||
5637 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
5638 | or possibly empty. If we have the final block of a non-empty |
5639 | object, record this fact to bypass a subsequent partial read. */ | |
5640 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a DJ |
5641 | { |
5642 | finished_object = xstrdup (object_name); | |
5643 | finished_annex = xstrdup (annex ? annex : ""); | |
5644 | finished_offset = offset + i; | |
5645 | } | |
5646 | ||
5647 | return i; | |
5648 | } | |
5649 | ||
1e3ff5ad | 5650 | static LONGEST |
4b8a223f | 5651 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
961cb7b5 MK |
5652 | const char *annex, gdb_byte *readbuf, |
5653 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
c906108c | 5654 | { |
d01949b6 | 5655 | struct remote_state *rs = get_remote_state (); |
c906108c | 5656 | int i; |
6d820c5c | 5657 | char *p2; |
1e3ff5ad | 5658 | char query_type; |
c906108c | 5659 | |
b2182ed2 | 5660 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
5661 | if (object == TARGET_OBJECT_MEMORY) |
5662 | { | |
5663 | int xfered; | |
5664 | errno = 0; | |
5665 | ||
5666 | if (writebuf != NULL) | |
b2182ed2 | 5667 | xfered = remote_write_bytes (offset, writebuf, len); |
21e3b9b9 | 5668 | else |
b2182ed2 | 5669 | xfered = remote_read_bytes (offset, readbuf, len); |
21e3b9b9 DJ |
5670 | |
5671 | if (xfered > 0) | |
5672 | return xfered; | |
5673 | else if (xfered == 0 && errno == 0) | |
5674 | return 0; | |
5675 | else | |
5676 | return -1; | |
5677 | } | |
5678 | ||
0e7f50da UW |
5679 | /* Handle SPU memory using qxfer packets. */ |
5680 | if (object == TARGET_OBJECT_SPU) | |
5681 | { | |
5682 | if (readbuf) | |
5683 | return remote_read_qxfer (ops, "spu", annex, readbuf, offset, len, | |
5684 | &remote_protocol_packets | |
5685 | [PACKET_qXfer_spu_read]); | |
5686 | else | |
5687 | return remote_write_qxfer (ops, "spu", annex, writebuf, offset, len, | |
5688 | &remote_protocol_packets | |
5689 | [PACKET_qXfer_spu_write]); | |
5690 | } | |
5691 | ||
a76d924d DJ |
5692 | /* Only handle flash writes. */ |
5693 | if (writebuf != NULL) | |
5694 | { | |
5695 | LONGEST xfered; | |
5696 | ||
5697 | switch (object) | |
5698 | { | |
5699 | case TARGET_OBJECT_FLASH: | |
5700 | xfered = remote_flash_write (ops, offset, len, writebuf); | |
5701 | ||
5702 | if (xfered > 0) | |
5703 | return xfered; | |
5704 | else if (xfered == 0 && errno == 0) | |
5705 | return 0; | |
5706 | else | |
5707 | return -1; | |
5708 | ||
5709 | default: | |
5710 | return -1; | |
5711 | } | |
5712 | } | |
4b8a223f | 5713 | |
1e3ff5ad AC |
5714 | /* Map pre-existing objects onto letters. DO NOT do this for new |
5715 | objects!!! Instead specify new query packets. */ | |
5716 | switch (object) | |
c906108c | 5717 | { |
1e3ff5ad AC |
5718 | case TARGET_OBJECT_AVR: |
5719 | query_type = 'R'; | |
5720 | break; | |
802188a7 RM |
5721 | |
5722 | case TARGET_OBJECT_AUXV: | |
0876f84a DJ |
5723 | gdb_assert (annex == NULL); |
5724 | return remote_read_qxfer (ops, "auxv", annex, readbuf, offset, len, | |
5725 | &remote_protocol_packets[PACKET_qXfer_auxv]); | |
802188a7 | 5726 | |
23181151 DJ |
5727 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
5728 | return remote_read_qxfer | |
5729 | (ops, "features", annex, readbuf, offset, len, | |
5730 | &remote_protocol_packets[PACKET_qXfer_features]); | |
5731 | ||
fd79ecee DJ |
5732 | case TARGET_OBJECT_MEMORY_MAP: |
5733 | gdb_assert (annex == NULL); | |
5734 | return remote_read_qxfer (ops, "memory-map", annex, readbuf, offset, len, | |
5735 | &remote_protocol_packets[PACKET_qXfer_memory_map]); | |
5736 | ||
1e3ff5ad | 5737 | default: |
c906108c SS |
5738 | return -1; |
5739 | } | |
5740 | ||
4b8a223f | 5741 | /* Note: a zero OFFSET and LEN can be used to query the minimum |
1e3ff5ad | 5742 | buffer size. */ |
4b8a223f | 5743 | if (offset == 0 && len == 0) |
ea9c271d DJ |
5744 | return (get_remote_packet_size ()); |
5745 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not | |
24b06219 | 5746 | large enough let the caller deal with it. */ |
ea9c271d | 5747 | if (len < get_remote_packet_size ()) |
1e3ff5ad | 5748 | return -1; |
ea9c271d | 5749 | len = get_remote_packet_size (); |
1e3ff5ad | 5750 | |
23860348 | 5751 | /* Except for querying the minimum buffer size, target must be open. */ |
c5aa993b | 5752 | if (!remote_desc) |
8a3fe4f8 | 5753 | error (_("remote query is only available after target open")); |
c906108c | 5754 | |
1e3ff5ad | 5755 | gdb_assert (annex != NULL); |
4b8a223f | 5756 | gdb_assert (readbuf != NULL); |
c906108c | 5757 | |
6d820c5c | 5758 | p2 = rs->buf; |
c906108c SS |
5759 | *p2++ = 'q'; |
5760 | *p2++ = query_type; | |
5761 | ||
23860348 MS |
5762 | /* We used one buffer char for the remote protocol q command and |
5763 | another for the query type. As the remote protocol encapsulation | |
5764 | uses 4 chars plus one extra in case we are debugging | |
5765 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
5766 | string. */ | |
c906108c | 5767 | i = 0; |
ea9c271d | 5768 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 5769 | { |
1e3ff5ad AC |
5770 | /* Bad caller may have sent forbidden characters. */ |
5771 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
5772 | *p2++ = annex[i]; | |
c906108c SS |
5773 | i++; |
5774 | } | |
1e3ff5ad AC |
5775 | *p2 = '\0'; |
5776 | gdb_assert (annex[i] == '\0'); | |
c906108c | 5777 | |
6d820c5c | 5778 | i = putpkt (rs->buf); |
c5aa993b JM |
5779 | if (i < 0) |
5780 | return i; | |
c906108c | 5781 | |
6d820c5c DJ |
5782 | getpkt (&rs->buf, &rs->buf_size, 0); |
5783 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 5784 | |
cfd77fa1 | 5785 | return strlen ((char *) readbuf); |
c906108c SS |
5786 | } |
5787 | ||
96baa820 JM |
5788 | static void |
5789 | remote_rcmd (char *command, | |
d9fcf2fb | 5790 | struct ui_file *outbuf) |
96baa820 | 5791 | { |
d01949b6 | 5792 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 5793 | char *p = rs->buf; |
96baa820 JM |
5794 | |
5795 | if (!remote_desc) | |
8a3fe4f8 | 5796 | error (_("remote rcmd is only available after target open")); |
96baa820 | 5797 | |
23860348 | 5798 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
5799 | if (command == NULL) |
5800 | command = ""; | |
5801 | ||
23860348 | 5802 | /* The query prefix. */ |
2e9f7625 DJ |
5803 | strcpy (rs->buf, "qRcmd,"); |
5804 | p = strchr (rs->buf, '\0'); | |
96baa820 | 5805 | |
2e9f7625 | 5806 | if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/) > get_remote_packet_size ()) |
8a3fe4f8 | 5807 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 5808 | |
23860348 | 5809 | /* Encode the actual command. */ |
cfd77fa1 | 5810 | bin2hex ((gdb_byte *) command, p, 0); |
96baa820 | 5811 | |
6d820c5c | 5812 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 5813 | error (_("Communication problem with target.")); |
96baa820 JM |
5814 | |
5815 | /* get/display the response */ | |
5816 | while (1) | |
5817 | { | |
2e9f7625 DJ |
5818 | char *buf; |
5819 | ||
23860348 | 5820 | /* XXX - see also tracepoint.c:remote_get_noisy_reply(). */ |
2e9f7625 | 5821 | rs->buf[0] = '\0'; |
6d820c5c | 5822 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 5823 | buf = rs->buf; |
96baa820 | 5824 | if (buf[0] == '\0') |
8a3fe4f8 | 5825 | error (_("Target does not support this command.")); |
96baa820 JM |
5826 | if (buf[0] == 'O' && buf[1] != 'K') |
5827 | { | |
23860348 | 5828 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
5829 | continue; |
5830 | } | |
5831 | if (strcmp (buf, "OK") == 0) | |
5832 | break; | |
7be570e7 JM |
5833 | if (strlen (buf) == 3 && buf[0] == 'E' |
5834 | && isdigit (buf[1]) && isdigit (buf[2])) | |
5835 | { | |
8a3fe4f8 | 5836 | error (_("Protocol error with Rcmd")); |
7be570e7 | 5837 | } |
96baa820 JM |
5838 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
5839 | { | |
5840 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
5841 | fputc_unfiltered (c, outbuf); | |
5842 | } | |
5843 | break; | |
5844 | } | |
5845 | } | |
5846 | ||
fd79ecee DJ |
5847 | static VEC(mem_region_s) * |
5848 | remote_memory_map (struct target_ops *ops) | |
5849 | { | |
5850 | VEC(mem_region_s) *result = NULL; | |
5851 | char *text = target_read_stralloc (¤t_target, | |
5852 | TARGET_OBJECT_MEMORY_MAP, NULL); | |
5853 | ||
5854 | if (text) | |
5855 | { | |
5856 | struct cleanup *back_to = make_cleanup (xfree, text); | |
5857 | result = parse_memory_map (text); | |
5858 | do_cleanups (back_to); | |
5859 | } | |
5860 | ||
5861 | return result; | |
5862 | } | |
5863 | ||
c906108c | 5864 | static void |
fba45db2 | 5865 | packet_command (char *args, int from_tty) |
c906108c | 5866 | { |
d01949b6 | 5867 | struct remote_state *rs = get_remote_state (); |
c906108c | 5868 | |
c5aa993b | 5869 | if (!remote_desc) |
8a3fe4f8 | 5870 | error (_("command can only be used with remote target")); |
c906108c | 5871 | |
c5aa993b | 5872 | if (!args) |
8a3fe4f8 | 5873 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
5874 | |
5875 | puts_filtered ("sending: "); | |
5876 | print_packet (args); | |
5877 | puts_filtered ("\n"); | |
5878 | putpkt (args); | |
5879 | ||
6d820c5c | 5880 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 5881 | puts_filtered ("received: "); |
6d820c5c | 5882 | print_packet (rs->buf); |
c906108c SS |
5883 | puts_filtered ("\n"); |
5884 | } | |
5885 | ||
5886 | #if 0 | |
23860348 | 5887 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 5888 | |
a14ed312 | 5889 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 5890 | |
a14ed312 | 5891 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 5892 | |
a14ed312 | 5893 | static void threadalive_test (char *cmd, int tty); |
c906108c | 5894 | |
a14ed312 | 5895 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 5896 | |
23860348 | 5897 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 5898 | |
a14ed312 | 5899 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 5900 | |
23860348 | 5901 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 5902 | |
a14ed312 | 5903 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 5904 | |
a14ed312 | 5905 | static void init_remote_threadtests (void); |
c906108c | 5906 | |
23860348 | 5907 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
5908 | |
5909 | static void | |
fba45db2 | 5910 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
5911 | { |
5912 | int sample_thread = SAMPLE_THREAD; | |
5913 | ||
a3f17187 | 5914 | printf_filtered (_("Remote threadset test\n")); |
c906108c SS |
5915 | set_thread (sample_thread, 1); |
5916 | } | |
5917 | ||
5918 | ||
5919 | static void | |
fba45db2 | 5920 | threadalive_test (char *cmd, int tty) |
c906108c SS |
5921 | { |
5922 | int sample_thread = SAMPLE_THREAD; | |
5923 | ||
39f77062 | 5924 | if (remote_thread_alive (pid_to_ptid (sample_thread))) |
c906108c SS |
5925 | printf_filtered ("PASS: Thread alive test\n"); |
5926 | else | |
5927 | printf_filtered ("FAIL: Thread alive test\n"); | |
5928 | } | |
5929 | ||
23860348 | 5930 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
5931 | |
5932 | void | |
fba45db2 | 5933 | output_threadid (char *title, threadref *ref) |
c906108c SS |
5934 | { |
5935 | char hexid[20]; | |
5936 | ||
23860348 | 5937 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
5938 | hexid[16] = 0; |
5939 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
5940 | } | |
5941 | ||
5942 | static void | |
fba45db2 | 5943 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
5944 | { |
5945 | int startflag = 1; | |
5946 | threadref nextthread; | |
5947 | int done, result_count; | |
5948 | threadref threadlist[3]; | |
5949 | ||
5950 | printf_filtered ("Remote Threadlist test\n"); | |
5951 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
5952 | &result_count, &threadlist[0])) | |
5953 | printf_filtered ("FAIL: threadlist test\n"); | |
5954 | else | |
5955 | { | |
5956 | threadref *scan = threadlist; | |
5957 | threadref *limit = scan + result_count; | |
5958 | ||
5959 | while (scan < limit) | |
5960 | output_threadid (" thread ", scan++); | |
5961 | } | |
5962 | } | |
5963 | ||
5964 | void | |
fba45db2 | 5965 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
5966 | { |
5967 | output_threadid ("Threadid: ", &info->threadid); | |
5968 | printf_filtered ("Name: %s\n ", info->shortname); | |
5969 | printf_filtered ("State: %s\n", info->display); | |
5970 | printf_filtered ("other: %s\n\n", info->more_display); | |
5971 | } | |
5972 | ||
5973 | int | |
fba45db2 | 5974 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
5975 | { |
5976 | int result; | |
5977 | int set; | |
5978 | struct gdb_ext_thread_info threadinfo; | |
5979 | ||
5980 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
5981 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
5982 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
5983 | display_thread_info (&threadinfo); | |
5984 | return result; | |
5985 | } | |
5986 | ||
5987 | static void | |
fba45db2 | 5988 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
5989 | { |
5990 | int athread = SAMPLE_THREAD; | |
5991 | threadref thread; | |
5992 | int set; | |
5993 | ||
5994 | int_to_threadref (&thread, athread); | |
5995 | printf_filtered ("Remote Threadinfo test\n"); | |
5996 | if (!get_and_display_threadinfo (&thread)) | |
5997 | printf_filtered ("FAIL cannot get thread info\n"); | |
5998 | } | |
5999 | ||
6000 | static int | |
fba45db2 | 6001 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
6002 | { |
6003 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
6004 | return get_and_display_threadinfo (ref); | |
6005 | } | |
6006 | ||
6007 | static void | |
fba45db2 | 6008 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
6009 | { |
6010 | printf_filtered ("Remote Threadlist update test\n"); | |
6011 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
6012 | } | |
6013 | ||
6014 | static void | |
6015 | init_remote_threadtests (void) | |
6016 | { | |
1bedd215 AC |
6017 | add_com ("tlist", class_obscure, threadlist_test_cmd, _("\ |
6018 | Fetch and print the remote list of thread identifiers, one pkt only")); | |
c906108c | 6019 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 6020 | _("Fetch and display info about one thread")); |
c906108c | 6021 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 6022 | _("Test setting to a different thread")); |
c906108c | 6023 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 6024 | _("Iterate through updating all remote thread info")); |
c906108c | 6025 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 6026 | _(" Remote thread alive test ")); |
c906108c SS |
6027 | } |
6028 | ||
6029 | #endif /* 0 */ | |
6030 | ||
f3fb8c85 MS |
6031 | /* Convert a thread ID to a string. Returns the string in a static |
6032 | buffer. */ | |
6033 | ||
6034 | static char * | |
39f77062 | 6035 | remote_pid_to_str (ptid_t ptid) |
f3fb8c85 | 6036 | { |
fd0a2a6f | 6037 | static char buf[32]; |
f3fb8c85 | 6038 | |
32a5b2f1 | 6039 | xsnprintf (buf, sizeof buf, "Thread %d", ptid_get_pid (ptid)); |
f3fb8c85 MS |
6040 | return buf; |
6041 | } | |
6042 | ||
38691318 KB |
6043 | /* Get the address of the thread local variable in OBJFILE which is |
6044 | stored at OFFSET within the thread local storage for thread PTID. */ | |
6045 | ||
6046 | static CORE_ADDR | |
6047 | remote_get_thread_local_address (ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
6048 | { | |
444abaca | 6049 | if (remote_protocol_packets[PACKET_qGetTLSAddr].support != PACKET_DISABLE) |
38691318 KB |
6050 | { |
6051 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 6052 | char *p = rs->buf; |
571dd617 | 6053 | enum packet_result result; |
38691318 KB |
6054 | |
6055 | strcpy (p, "qGetTLSAddr:"); | |
6056 | p += strlen (p); | |
6057 | p += hexnumstr (p, PIDGET (ptid)); | |
6058 | *p++ = ','; | |
6059 | p += hexnumstr (p, offset); | |
6060 | *p++ = ','; | |
6061 | p += hexnumstr (p, lm); | |
6062 | *p++ = '\0'; | |
6063 | ||
6d820c5c DJ |
6064 | putpkt (rs->buf); |
6065 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6066 | result = packet_ok (rs->buf, &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 6067 | if (result == PACKET_OK) |
38691318 KB |
6068 | { |
6069 | ULONGEST result; | |
6070 | ||
6d820c5c | 6071 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
6072 | return result; |
6073 | } | |
571dd617 | 6074 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
6075 | throw_error (TLS_GENERIC_ERROR, |
6076 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 6077 | else |
109c3e39 AC |
6078 | throw_error (TLS_GENERIC_ERROR, |
6079 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
6080 | } |
6081 | else | |
109c3e39 AC |
6082 | throw_error (TLS_GENERIC_ERROR, |
6083 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
6084 | /* Not reached. */ |
6085 | return 0; | |
6086 | } | |
6087 | ||
29709017 DJ |
6088 | /* Support for inferring a target description based on the current |
6089 | architecture and the size of a 'g' packet. While the 'g' packet | |
6090 | can have any size (since optional registers can be left off the | |
6091 | end), some sizes are easily recognizable given knowledge of the | |
6092 | approximate architecture. */ | |
6093 | ||
6094 | struct remote_g_packet_guess | |
6095 | { | |
6096 | int bytes; | |
6097 | const struct target_desc *tdesc; | |
6098 | }; | |
6099 | typedef struct remote_g_packet_guess remote_g_packet_guess_s; | |
6100 | DEF_VEC_O(remote_g_packet_guess_s); | |
6101 | ||
6102 | struct remote_g_packet_data | |
6103 | { | |
6104 | VEC(remote_g_packet_guess_s) *guesses; | |
6105 | }; | |
6106 | ||
6107 | static struct gdbarch_data *remote_g_packet_data_handle; | |
6108 | ||
6109 | static void * | |
6110 | remote_g_packet_data_init (struct obstack *obstack) | |
6111 | { | |
6112 | return OBSTACK_ZALLOC (obstack, struct remote_g_packet_data); | |
6113 | } | |
6114 | ||
6115 | void | |
6116 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
6117 | const struct target_desc *tdesc) | |
6118 | { | |
6119 | struct remote_g_packet_data *data | |
6120 | = gdbarch_data (gdbarch, remote_g_packet_data_handle); | |
6121 | struct remote_g_packet_guess new_guess, *guess; | |
6122 | int ix; | |
6123 | ||
6124 | gdb_assert (tdesc != NULL); | |
6125 | ||
6126 | for (ix = 0; | |
6127 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
6128 | ix++) | |
6129 | if (guess->bytes == bytes) | |
6130 | internal_error (__FILE__, __LINE__, | |
6131 | "Duplicate g packet description added for size %d", | |
6132 | bytes); | |
6133 | ||
6134 | new_guess.bytes = bytes; | |
6135 | new_guess.tdesc = tdesc; | |
6136 | VEC_safe_push (remote_g_packet_guess_s, data->guesses, &new_guess); | |
6137 | } | |
6138 | ||
6139 | static const struct target_desc * | |
6140 | remote_read_description (struct target_ops *target) | |
6141 | { | |
6142 | struct remote_g_packet_data *data | |
6143 | = gdbarch_data (current_gdbarch, remote_g_packet_data_handle); | |
6144 | ||
6145 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) | |
6146 | { | |
6147 | struct remote_g_packet_guess *guess; | |
6148 | int ix; | |
6149 | int bytes = send_g_packet (); | |
6150 | ||
6151 | for (ix = 0; | |
6152 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
6153 | ix++) | |
6154 | if (guess->bytes == bytes) | |
6155 | return guess->tdesc; | |
6156 | ||
6157 | /* We discard the g packet. A minor optimization would be to | |
6158 | hold on to it, and fill the register cache once we have selected | |
6159 | an architecture, but it's too tricky to do safely. */ | |
6160 | } | |
6161 | ||
6162 | return NULL; | |
6163 | } | |
6164 | ||
c906108c | 6165 | static void |
fba45db2 | 6166 | init_remote_ops (void) |
c906108c | 6167 | { |
c5aa993b | 6168 | remote_ops.to_shortname = "remote"; |
c906108c | 6169 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 6170 | remote_ops.to_doc = |
c906108c | 6171 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
6172 | Specify the serial device it is connected to\n\ |
6173 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
6174 | remote_ops.to_open = remote_open; |
6175 | remote_ops.to_close = remote_close; | |
c906108c | 6176 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 6177 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 6178 | remote_ops.to_resume = remote_resume; |
c906108c SS |
6179 | remote_ops.to_wait = remote_wait; |
6180 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
6181 | remote_ops.to_store_registers = remote_store_registers; | |
6182 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 6183 | remote_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 6184 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
6185 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
6186 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
6187 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
6188 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
6189 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; | |
6190 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
6191 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
6192 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
6193 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b JM |
6194 | remote_ops.to_kill = remote_kill; |
6195 | remote_ops.to_load = generic_load; | |
c906108c SS |
6196 | remote_ops.to_mourn_inferior = remote_mourn; |
6197 | remote_ops.to_thread_alive = remote_thread_alive; | |
0f71a2f6 | 6198 | remote_ops.to_find_new_threads = remote_threads_info; |
0caabb7e | 6199 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 6200 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
c906108c | 6201 | remote_ops.to_stop = remote_stop; |
4b8a223f | 6202 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 6203 | remote_ops.to_rcmd = remote_rcmd; |
38691318 | 6204 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; |
c906108c | 6205 | remote_ops.to_stratum = process_stratum; |
c5aa993b JM |
6206 | remote_ops.to_has_all_memory = 1; |
6207 | remote_ops.to_has_memory = 1; | |
6208 | remote_ops.to_has_stack = 1; | |
6209 | remote_ops.to_has_registers = 1; | |
6210 | remote_ops.to_has_execution = 1; | |
6211 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
6212 | remote_ops.to_magic = OPS_MAGIC; | |
fd79ecee | 6213 | remote_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
6214 | remote_ops.to_flash_erase = remote_flash_erase; |
6215 | remote_ops.to_flash_done = remote_flash_done; | |
29709017 | 6216 | remote_ops.to_read_description = remote_read_description; |
c906108c SS |
6217 | } |
6218 | ||
6219 | /* Set up the extended remote vector by making a copy of the standard | |
6220 | remote vector and adding to it. */ | |
6221 | ||
6222 | static void | |
fba45db2 | 6223 | init_extended_remote_ops (void) |
c906108c SS |
6224 | { |
6225 | extended_remote_ops = remote_ops; | |
6226 | ||
0f71a2f6 | 6227 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 6228 | extended_remote_ops.to_longname = |
c906108c | 6229 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 6230 | extended_remote_ops.to_doc = |
c906108c SS |
6231 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
6232 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 6233 | extended_remote_ops.to_open = extended_remote_open; |
c906108c SS |
6234 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
6235 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
0f71a2f6 JM |
6236 | } |
6237 | ||
6426a772 JM |
6238 | static int |
6239 | remote_can_async_p (void) | |
6240 | { | |
23860348 | 6241 | /* We're async whenever the serial device is. */ |
2cd58942 | 6242 | return (current_target.to_async_mask_value) && serial_can_async_p (remote_desc); |
6426a772 JM |
6243 | } |
6244 | ||
6245 | static int | |
6246 | remote_is_async_p (void) | |
6247 | { | |
23860348 | 6248 | /* We're async whenever the serial device is. */ |
2cd58942 | 6249 | return (current_target.to_async_mask_value) && serial_is_async_p (remote_desc); |
6426a772 JM |
6250 | } |
6251 | ||
2acceee2 JM |
6252 | /* Pass the SERIAL event on and up to the client. One day this code |
6253 | will be able to delay notifying the client of an event until the | |
23860348 | 6254 | point where an entire packet has been received. */ |
2acceee2 | 6255 | |
2bc416ba | 6256 | static void (*async_client_callback) (enum inferior_event_type event_type, |
23860348 | 6257 | void *context); |
2acceee2 JM |
6258 | static void *async_client_context; |
6259 | static serial_event_ftype remote_async_serial_handler; | |
6260 | ||
6426a772 | 6261 | static void |
819cc324 | 6262 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 6263 | { |
2acceee2 JM |
6264 | /* Don't propogate error information up to the client. Instead let |
6265 | the client find out about the error by querying the target. */ | |
6266 | async_client_callback (INF_REG_EVENT, async_client_context); | |
6267 | } | |
6268 | ||
6269 | static void | |
2bc416ba | 6270 | remote_async (void (*callback) (enum inferior_event_type event_type, |
23860348 | 6271 | void *context), void *context) |
2acceee2 | 6272 | { |
ed9a39eb | 6273 | if (current_target.to_async_mask_value == 0) |
8e65ff28 | 6274 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 6275 | _("Calling remote_async when async is masked")); |
ed9a39eb | 6276 | |
2acceee2 JM |
6277 | if (callback != NULL) |
6278 | { | |
2cd58942 | 6279 | serial_async (remote_desc, remote_async_serial_handler, NULL); |
2acceee2 JM |
6280 | async_client_callback = callback; |
6281 | async_client_context = context; | |
6282 | } | |
6283 | else | |
2cd58942 | 6284 | serial_async (remote_desc, NULL, NULL); |
6426a772 JM |
6285 | } |
6286 | ||
43ff13b4 JM |
6287 | /* Target async and target extended-async. |
6288 | ||
6289 | This are temporary targets, until it is all tested. Eventually | |
6290 | async support will be incorporated int the usual 'remote' | |
23860348 | 6291 | target. */ |
43ff13b4 JM |
6292 | |
6293 | static void | |
c2d11a7d | 6294 | init_remote_async_ops (void) |
43ff13b4 JM |
6295 | { |
6296 | remote_async_ops.to_shortname = "async"; | |
2bc416ba | 6297 | remote_async_ops.to_longname = |
23860348 | 6298 | "Remote serial target in async version of the gdb-specific protocol"; |
c5aa993b | 6299 | remote_async_ops.to_doc = |
43ff13b4 JM |
6300 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
6301 | Specify the serial device it is connected to (e.g. /dev/ttya)."; | |
c5aa993b JM |
6302 | remote_async_ops.to_open = remote_async_open; |
6303 | remote_async_ops.to_close = remote_close; | |
6ad8ae5c DJ |
6304 | remote_async_ops.to_detach = remote_detach; |
6305 | remote_async_ops.to_disconnect = remote_disconnect; | |
c5aa993b JM |
6306 | remote_async_ops.to_resume = remote_async_resume; |
6307 | remote_async_ops.to_wait = remote_async_wait; | |
6308 | remote_async_ops.to_fetch_registers = remote_fetch_registers; | |
6309 | remote_async_ops.to_store_registers = remote_store_registers; | |
6310 | remote_async_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 6311 | remote_async_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 6312 | remote_async_ops.to_files_info = remote_files_info; |
43ff13b4 JM |
6313 | remote_async_ops.to_insert_breakpoint = remote_insert_breakpoint; |
6314 | remote_async_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
6315 | remote_async_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
6316 | remote_async_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
6317 | remote_async_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
6318 | remote_async_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
6319 | remote_async_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
6320 | remote_async_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; | |
6321 | remote_async_ops.to_stopped_data_address = remote_stopped_data_address; | |
6426a772 JM |
6322 | remote_async_ops.to_terminal_inferior = remote_async_terminal_inferior; |
6323 | remote_async_ops.to_terminal_ours = remote_async_terminal_ours; | |
c5aa993b JM |
6324 | remote_async_ops.to_kill = remote_async_kill; |
6325 | remote_async_ops.to_load = generic_load; | |
53a5351d | 6326 | remote_async_ops.to_mourn_inferior = remote_async_mourn; |
c5aa993b JM |
6327 | remote_async_ops.to_thread_alive = remote_thread_alive; |
6328 | remote_async_ops.to_find_new_threads = remote_threads_info; | |
cf759d3b ND |
6329 | remote_async_ops.to_pid_to_str = remote_pid_to_str; |
6330 | remote_async_ops.to_extra_thread_info = remote_threads_extra_info; | |
43ff13b4 | 6331 | remote_async_ops.to_stop = remote_stop; |
4b8a223f | 6332 | remote_async_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 6333 | remote_async_ops.to_rcmd = remote_rcmd; |
c5aa993b JM |
6334 | remote_async_ops.to_stratum = process_stratum; |
6335 | remote_async_ops.to_has_all_memory = 1; | |
6336 | remote_async_ops.to_has_memory = 1; | |
6337 | remote_async_ops.to_has_stack = 1; | |
6338 | remote_async_ops.to_has_registers = 1; | |
6339 | remote_async_ops.to_has_execution = 1; | |
6340 | remote_async_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
6426a772 JM |
6341 | remote_async_ops.to_can_async_p = remote_can_async_p; |
6342 | remote_async_ops.to_is_async_p = remote_is_async_p; | |
6343 | remote_async_ops.to_async = remote_async; | |
ed9a39eb | 6344 | remote_async_ops.to_async_mask_value = 1; |
c5aa993b | 6345 | remote_async_ops.to_magic = OPS_MAGIC; |
fd79ecee | 6346 | remote_async_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
6347 | remote_async_ops.to_flash_erase = remote_flash_erase; |
6348 | remote_async_ops.to_flash_done = remote_flash_done; | |
29709017 | 6349 | remote_ops.to_read_description = remote_read_description; |
43ff13b4 JM |
6350 | } |
6351 | ||
6352 | /* Set up the async extended remote vector by making a copy of the standard | |
6353 | remote vector and adding to it. */ | |
6354 | ||
6355 | static void | |
c2d11a7d | 6356 | init_extended_async_remote_ops (void) |
43ff13b4 JM |
6357 | { |
6358 | extended_async_remote_ops = remote_async_ops; | |
6359 | ||
6360 | extended_async_remote_ops.to_shortname = "extended-async"; | |
c5aa993b | 6361 | extended_async_remote_ops.to_longname = |
43ff13b4 | 6362 | "Extended remote serial target in async gdb-specific protocol"; |
c5aa993b | 6363 | extended_async_remote_ops.to_doc = |
43ff13b4 JM |
6364 | "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\ |
6365 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 6366 | extended_async_remote_ops.to_open = extended_remote_async_open; |
43ff13b4 JM |
6367 | extended_async_remote_ops.to_create_inferior = extended_remote_async_create_inferior; |
6368 | extended_async_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
6369 | } | |
6370 | ||
5a2468f5 | 6371 | static void |
c2d11a7d | 6372 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 6373 | { |
427c3a89 | 6374 | help_list (remote_set_cmdlist, "set remote ", -1, gdb_stdout); |
5a2468f5 JM |
6375 | } |
6376 | ||
d471ea57 AC |
6377 | static void |
6378 | show_remote_cmd (char *args, int from_tty) | |
6379 | { | |
37a105a1 | 6380 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 6381 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 DJ |
6382 | struct cleanup *showlist_chain; |
6383 | struct cmd_list_element *list = remote_show_cmdlist; | |
6384 | ||
6385 | showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist"); | |
6386 | for (; list != NULL; list = list->next) | |
6387 | if (strcmp (list->name, "Z-packet") == 0) | |
6388 | continue; | |
427c3a89 DJ |
6389 | else if (list->type == not_set_cmd) |
6390 | /* Alias commands are exactly like the original, except they | |
6391 | don't have the normal type. */ | |
6392 | continue; | |
6393 | else | |
37a105a1 DJ |
6394 | { |
6395 | struct cleanup *option_chain | |
6396 | = make_cleanup_ui_out_tuple_begin_end (uiout, "option"); | |
6397 | ui_out_field_string (uiout, "name", list->name); | |
6398 | ui_out_text (uiout, ": "); | |
427c3a89 DJ |
6399 | if (list->type == show_cmd) |
6400 | do_setshow_command ((char *) NULL, from_tty, list); | |
6401 | else | |
6402 | cmd_func (list, NULL, from_tty); | |
37a105a1 DJ |
6403 | /* Close the tuple. */ |
6404 | do_cleanups (option_chain); | |
6405 | } | |
427c3a89 DJ |
6406 | |
6407 | /* Close the tuple. */ | |
6408 | do_cleanups (showlist_chain); | |
d471ea57 | 6409 | } |
5a2468f5 | 6410 | |
0f71a2f6 | 6411 | static void |
fba45db2 | 6412 | build_remote_gdbarch_data (void) |
0f71a2f6 | 6413 | { |
17a912b6 | 6414 | remote_address_size = gdbarch_addr_bit (current_gdbarch); |
0f71a2f6 JM |
6415 | } |
6416 | ||
23860348 | 6417 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
6418 | static void |
6419 | remote_new_objfile (struct objfile *objfile) | |
6420 | { | |
23860348 | 6421 | if (remote_desc != 0) /* Have a remote connection. */ |
06d3b283 | 6422 | remote_check_symbols (objfile); |
dc8acb97 MS |
6423 | } |
6424 | ||
c906108c | 6425 | void |
fba45db2 | 6426 | _initialize_remote (void) |
c906108c | 6427 | { |
ea9c271d DJ |
6428 | struct remote_state *rs; |
6429 | ||
0f71a2f6 | 6430 | /* architecture specific data */ |
2bc416ba | 6431 | remote_gdbarch_data_handle = |
23860348 | 6432 | gdbarch_data_register_post_init (init_remote_state); |
29709017 DJ |
6433 | remote_g_packet_data_handle = |
6434 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 AC |
6435 | |
6436 | /* Old tacky stuff. NOTE: This comes after the remote protocol so | |
6437 | that the remote protocol has been initialized. */ | |
046a4708 AC |
6438 | DEPRECATED_REGISTER_GDBARCH_SWAP (remote_address_size); |
6439 | deprecated_register_gdbarch_swap (NULL, 0, build_remote_gdbarch_data); | |
0f71a2f6 | 6440 | |
ea9c271d DJ |
6441 | /* Initialize the per-target state. At the moment there is only one |
6442 | of these, not one per target. Only one target is active at a | |
6443 | time. The default buffer size is unimportant; it will be expanded | |
6444 | whenever a larger buffer is needed. */ | |
0b83947e | 6445 | rs = get_remote_state_raw (); |
ea9c271d DJ |
6446 | rs->buf_size = 400; |
6447 | rs->buf = xmalloc (rs->buf_size); | |
6448 | ||
c906108c SS |
6449 | init_remote_ops (); |
6450 | add_target (&remote_ops); | |
6451 | ||
6452 | init_extended_remote_ops (); | |
6453 | add_target (&extended_remote_ops); | |
cce74817 | 6454 | |
43ff13b4 JM |
6455 | init_remote_async_ops (); |
6456 | add_target (&remote_async_ops); | |
6457 | ||
6458 | init_extended_async_remote_ops (); | |
6459 | add_target (&extended_async_remote_ops); | |
6460 | ||
dc8acb97 | 6461 | /* Hook into new objfile notification. */ |
06d3b283 | 6462 | observer_attach_new_objfile (remote_new_objfile); |
dc8acb97 | 6463 | |
c906108c SS |
6464 | #if 0 |
6465 | init_remote_threadtests (); | |
6466 | #endif | |
6467 | ||
23860348 | 6468 | /* set/show remote ... */ |
d471ea57 | 6469 | |
1bedd215 | 6470 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
6471 | Remote protocol specific variables\n\ |
6472 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 6473 | the packets being used"), |
cff3e48b | 6474 | &remote_set_cmdlist, "set remote ", |
23860348 | 6475 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 6476 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
6477 | Remote protocol specific variables\n\ |
6478 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 6479 | the packets being used"), |
cff3e48b | 6480 | &remote_show_cmdlist, "show remote ", |
23860348 | 6481 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 6482 | |
1a966eab AC |
6483 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
6484 | Compare section data on target to the exec file.\n\ | |
6485 | Argument is a single section name (default: all loaded sections)."), | |
c906108c SS |
6486 | &cmdlist); |
6487 | ||
1a966eab AC |
6488 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
6489 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
6490 | maintenance packet TEXT\n\ |
6491 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
6492 | this command sends the string TEXT to the inferior, and displays the\n\ | |
6493 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 6494 | terminating `#' character and checksum."), |
c906108c SS |
6495 | &maintenancelist); |
6496 | ||
7915a72c AC |
6497 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
6498 | Set whether to send break if interrupted."), _("\ | |
6499 | Show whether to send break if interrupted."), _("\ | |
6500 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
2c5b56ce | 6501 | NULL, NULL, /* FIXME: i18n: Whether to send break if interrupted is %s. */ |
e707bbc2 | 6502 | &setlist, &showlist); |
c906108c | 6503 | |
23860348 | 6504 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 6505 | |
1a966eab AC |
6506 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
6507 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 6508 | &setlist); |
1a966eab AC |
6509 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
6510 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
6511 | &showlist); |
6512 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
6513 | set_memory_write_packet_size, _("\ |
6514 | Set the maximum number of bytes per memory-write packet.\n\ | |
6515 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
6516 | default packet size. The actual limit is further reduced\n\ | |
6517 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
6518 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
6519 | &remote_set_cmdlist); |
6520 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
6521 | set_memory_read_packet_size, _("\ |
6522 | Set the maximum number of bytes per memory-read packet.\n\ | |
6523 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
6524 | default packet size. The actual limit is further reduced\n\ | |
6525 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
6526 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
6527 | &remote_set_cmdlist); |
6528 | add_cmd ("memory-write-packet-size", no_class, | |
6529 | show_memory_write_packet_size, | |
1a966eab | 6530 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
6531 | &remote_show_cmdlist); |
6532 | add_cmd ("memory-read-packet-size", no_class, | |
6533 | show_memory_read_packet_size, | |
1a966eab | 6534 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 6535 | &remote_show_cmdlist); |
c906108c | 6536 | |
b3f42336 | 6537 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
6538 | &remote_hw_watchpoint_limit, _("\ |
6539 | Set the maximum number of target hardware watchpoints."), _("\ | |
6540 | Show the maximum number of target hardware watchpoints."), _("\ | |
6541 | Specify a negative limit for unlimited."), | |
2c5b56ce | 6542 | NULL, NULL, /* FIXME: i18n: The maximum number of target hardware watchpoints is %s. */ |
b3f42336 AC |
6543 | &remote_set_cmdlist, &remote_show_cmdlist); |
6544 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, | |
7915a72c AC |
6545 | &remote_hw_breakpoint_limit, _("\ |
6546 | Set the maximum number of target hardware breakpoints."), _("\ | |
6547 | Show the maximum number of target hardware breakpoints."), _("\ | |
6548 | Specify a negative limit for unlimited."), | |
2c5b56ce | 6549 | NULL, NULL, /* FIXME: i18n: The maximum number of target hardware breakpoints is %s. */ |
b3f42336 | 6550 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 6551 | |
4d28ad1e AC |
6552 | add_setshow_integer_cmd ("remoteaddresssize", class_obscure, |
6553 | &remote_address_size, _("\ | |
6554 | Set the maximum size of the address (in bits) in a memory packet."), _("\ | |
6555 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
6556 | NULL, | |
6557 | NULL, /* FIXME: i18n: */ | |
6558 | &setlist, &showlist); | |
c906108c | 6559 | |
444abaca | 6560 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 6561 | "X", "binary-download", 1); |
0f71a2f6 | 6562 | |
444abaca | 6563 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 6564 | "vCont", "verbose-resume", 0); |
506fb367 | 6565 | |
89be2091 DJ |
6566 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
6567 | "QPassSignals", "pass-signals", 0); | |
6568 | ||
444abaca | 6569 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 6570 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 6571 | |
444abaca | 6572 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 6573 | "P", "set-register", 1); |
d471ea57 | 6574 | |
444abaca | 6575 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 6576 | "p", "fetch-register", 1); |
b96ec7ac | 6577 | |
444abaca | 6578 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 6579 | "Z0", "software-breakpoint", 0); |
d471ea57 | 6580 | |
444abaca | 6581 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 6582 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 6583 | |
444abaca | 6584 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 6585 | "Z2", "write-watchpoint", 0); |
d471ea57 | 6586 | |
444abaca | 6587 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 6588 | "Z3", "read-watchpoint", 0); |
d471ea57 | 6589 | |
444abaca | 6590 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 6591 | "Z4", "access-watchpoint", 0); |
d471ea57 | 6592 | |
0876f84a DJ |
6593 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
6594 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 6595 | |
23181151 DJ |
6596 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
6597 | "qXfer:features:read", "target-features", 0); | |
6598 | ||
fd79ecee DJ |
6599 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
6600 | "qXfer:memory-map:read", "memory-map", 0); | |
6601 | ||
0e7f50da UW |
6602 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_read], |
6603 | "qXfer:spu:read", "read-spu-object", 0); | |
6604 | ||
6605 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_spu_write], | |
6606 | "qXfer:spu:write", "write-spu-object", 0); | |
6607 | ||
444abaca | 6608 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 6609 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
6610 | 0); |
6611 | ||
be2a5f71 DJ |
6612 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
6613 | "qSupported", "supported-packets", 0); | |
6614 | ||
37a105a1 DJ |
6615 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
6616 | Z sub-packet has its own set and show commands, but users may | |
6617 | have sets to this variable in their .gdbinit files (or in their | |
6618 | documentation). */ | |
e9e68a56 | 6619 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
6620 | &remote_Z_packet_detect, _("\ |
6621 | Set use of remote protocol `Z' packets"), _("\ | |
6622 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 6623 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 6624 | packets."), |
e9e68a56 | 6625 | set_remote_protocol_Z_packet_cmd, |
2c5b56ce | 6626 | show_remote_protocol_Z_packet_cmd, /* FIXME: i18n: Use of remote protocol `Z' packets is %s. */ |
e9e68a56 | 6627 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 CV |
6628 | |
6629 | /* Eventually initialize fileio. See fileio.c */ | |
6630 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
c906108c | 6631 | } |