Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c | 2 | |
197e01b6 | 3 | Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, |
24b06219 | 4 | 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 |
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 | |
a14ed312 | 92 | static void remote_prepare_to_store (void); |
c906108c | 93 | |
a14ed312 | 94 | static void remote_fetch_registers (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 | |
a14ed312 | 111 | static void remote_store_registers (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. */ |
ad10f812 AC |
263 | /* char *name; == REGISTER_NAME (regnum); at present. */ |
264 | }; | |
265 | ||
ea9c271d | 266 | struct remote_arch_state |
d01949b6 | 267 | { |
ad10f812 AC |
268 | /* Description of the remote protocol registers. */ |
269 | long sizeof_g_packet; | |
b323314b AC |
270 | |
271 | /* Description of the remote protocol registers indexed by REGNUM | |
74ca34ce | 272 | (making an array NUM_REGS in size). */ |
b323314b | 273 | struct packet_reg *regs; |
ad10f812 | 274 | |
d01949b6 AC |
275 | /* This is the size (in chars) of the first response to the ``g'' |
276 | packet. It is used as a heuristic when determining the maximum | |
277 | size of memory-read and memory-write packets. A target will | |
278 | typically only reserve a buffer large enough to hold the ``g'' | |
279 | packet. The size does not include packet overhead (headers and | |
23860348 | 280 | trailers). */ |
d01949b6 AC |
281 | long actual_register_packet_size; |
282 | ||
283 | /* This is the maximum size (in chars) of a non read/write packet. | |
23860348 | 284 | It is also used as a cap on the size of read/write packets. */ |
d01949b6 AC |
285 | long remote_packet_size; |
286 | }; | |
287 | ||
3c3bea1c | 288 | |
d01949b6 AC |
289 | /* Handle for retreving the remote protocol data from gdbarch. */ |
290 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
291 | ||
ea9c271d DJ |
292 | static struct remote_arch_state * |
293 | get_remote_arch_state (void) | |
d01949b6 | 294 | { |
451fbdda | 295 | return gdbarch_data (current_gdbarch, remote_gdbarch_data_handle); |
d01949b6 AC |
296 | } |
297 | ||
0b83947e DJ |
298 | /* Fetch the global remote target state. */ |
299 | ||
300 | static struct remote_state * | |
301 | get_remote_state (void) | |
302 | { | |
303 | /* Make sure that the remote architecture state has been | |
304 | initialized, because doing so might reallocate rs->buf. Any | |
305 | function which calls getpkt also needs to be mindful of changes | |
306 | to rs->buf, but this call limits the number of places which run | |
307 | into trouble. */ | |
308 | get_remote_arch_state (); | |
309 | ||
310 | return get_remote_state_raw (); | |
311 | } | |
312 | ||
74ca34ce DJ |
313 | static int |
314 | compare_pnums (const void *lhs_, const void *rhs_) | |
315 | { | |
316 | const struct packet_reg * const *lhs = lhs_; | |
317 | const struct packet_reg * const *rhs = rhs_; | |
318 | ||
319 | if ((*lhs)->pnum < (*rhs)->pnum) | |
320 | return -1; | |
321 | else if ((*lhs)->pnum == (*rhs)->pnum) | |
322 | return 0; | |
323 | else | |
324 | return 1; | |
325 | } | |
326 | ||
d01949b6 AC |
327 | static void * |
328 | init_remote_state (struct gdbarch *gdbarch) | |
329 | { | |
74ca34ce | 330 | int regnum, num_remote_regs, offset; |
0b83947e | 331 | struct remote_state *rs = get_remote_state_raw (); |
ea9c271d | 332 | struct remote_arch_state *rsa; |
74ca34ce | 333 | struct packet_reg **remote_regs; |
ea9c271d DJ |
334 | |
335 | rsa = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_arch_state); | |
d01949b6 | 336 | |
b323314b | 337 | /* Assume a 1:1 regnum<->pnum table. */ |
74ca34ce DJ |
338 | rsa->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, NUM_REGS, struct packet_reg); |
339 | for (regnum = 0; regnum < NUM_REGS; regnum++) | |
ad10f812 | 340 | { |
ea9c271d | 341 | struct packet_reg *r = &rsa->regs[regnum]; |
b323314b AC |
342 | r->pnum = regnum; |
343 | r->regnum = regnum; | |
74ca34ce DJ |
344 | } |
345 | ||
346 | /* Define the g/G packet format as the contents of each register | |
347 | with a remote protocol number, in order of ascending protocol | |
348 | number. */ | |
349 | ||
350 | remote_regs = alloca (NUM_REGS * sizeof (struct packet_reg *)); | |
351 | for (num_remote_regs = 0, regnum = 0; regnum < NUM_REGS; regnum++) | |
352 | if (rsa->regs[regnum].pnum != -1) | |
353 | remote_regs[num_remote_regs++] = &rsa->regs[regnum]; | |
7d58c67d | 354 | |
74ca34ce DJ |
355 | qsort (remote_regs, num_remote_regs, sizeof (struct packet_reg *), |
356 | compare_pnums); | |
357 | ||
358 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
359 | { | |
360 | remote_regs[regnum]->in_g_packet = 1; | |
361 | remote_regs[regnum]->offset = offset; | |
362 | offset += register_size (current_gdbarch, remote_regs[regnum]->regnum); | |
ad10f812 AC |
363 | } |
364 | ||
74ca34ce DJ |
365 | /* Record the maximum possible size of the g packet - it may turn out |
366 | to be smaller. */ | |
367 | rsa->sizeof_g_packet = offset; | |
368 | ||
d01949b6 AC |
369 | /* Default maximum number of characters in a packet body. Many |
370 | remote stubs have a hardwired buffer size of 400 bytes | |
371 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
372 | as the maximum packet-size to ensure that the packet and an extra | |
373 | NUL character can always fit in the buffer. This stops GDB | |
374 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d DJ |
375 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
376 | rsa->remote_packet_size = 400 - 1; | |
d01949b6 | 377 | |
ea9c271d DJ |
378 | /* This one is filled in when a ``g'' packet is received. */ |
379 | rsa->actual_register_packet_size = 0; | |
380 | ||
381 | /* Should rsa->sizeof_g_packet needs more space than the | |
ad10f812 AC |
382 | default, adjust the size accordingly. Remember that each byte is |
383 | encoded as two characters. 32 is the overhead for the packet | |
384 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 385 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 386 | little. */ |
ea9c271d DJ |
387 | if (rsa->sizeof_g_packet > ((rsa->remote_packet_size - 32) / 2)) |
388 | rsa->remote_packet_size = (rsa->sizeof_g_packet * 2 + 32); | |
802188a7 | 389 | |
ea9c271d DJ |
390 | /* Make sure that the packet buffer is plenty big enough for |
391 | this architecture. */ | |
392 | if (rs->buf_size < rsa->remote_packet_size) | |
393 | { | |
394 | rs->buf_size = 2 * rsa->remote_packet_size; | |
7fca722e | 395 | rs->buf = xrealloc (rs->buf, rs->buf_size); |
ea9c271d | 396 | } |
6d820c5c | 397 | |
ea9c271d DJ |
398 | return rsa; |
399 | } | |
400 | ||
401 | /* Return the current allowed size of a remote packet. This is | |
402 | inferred from the current architecture, and should be used to | |
403 | limit the length of outgoing packets. */ | |
404 | static long | |
405 | get_remote_packet_size (void) | |
406 | { | |
be2a5f71 | 407 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
408 | struct remote_arch_state *rsa = get_remote_arch_state (); |
409 | ||
be2a5f71 DJ |
410 | if (rs->explicit_packet_size) |
411 | return rs->explicit_packet_size; | |
412 | ||
ea9c271d | 413 | return rsa->remote_packet_size; |
d01949b6 AC |
414 | } |
415 | ||
ad10f812 | 416 | static struct packet_reg * |
ea9c271d | 417 | packet_reg_from_regnum (struct remote_arch_state *rsa, long regnum) |
ad10f812 | 418 | { |
74ca34ce | 419 | if (regnum < 0 && regnum >= NUM_REGS) |
b323314b AC |
420 | return NULL; |
421 | else | |
ad10f812 | 422 | { |
ea9c271d | 423 | struct packet_reg *r = &rsa->regs[regnum]; |
b323314b AC |
424 | gdb_assert (r->regnum == regnum); |
425 | return r; | |
ad10f812 | 426 | } |
ad10f812 AC |
427 | } |
428 | ||
429 | static struct packet_reg * | |
ea9c271d | 430 | packet_reg_from_pnum (struct remote_arch_state *rsa, LONGEST pnum) |
ad10f812 | 431 | { |
b323314b | 432 | int i; |
74ca34ce | 433 | for (i = 0; i < NUM_REGS; i++) |
ad10f812 | 434 | { |
ea9c271d | 435 | struct packet_reg *r = &rsa->regs[i]; |
b323314b AC |
436 | if (r->pnum == pnum) |
437 | return r; | |
ad10f812 AC |
438 | } |
439 | return NULL; | |
d01949b6 AC |
440 | } |
441 | ||
3c3bea1c GS |
442 | /* FIXME: graces/2002-08-08: These variables should eventually be |
443 | bound to an instance of the target object (as in gdbarch-tdep()), | |
444 | when such a thing exists. */ | |
445 | ||
446 | /* This is set to the data address of the access causing the target | |
447 | to stop for a watchpoint. */ | |
448 | static CORE_ADDR remote_watch_data_address; | |
449 | ||
94e08568 | 450 | /* This is non-zero if target stopped for a watchpoint. */ |
3c3bea1c GS |
451 | static int remote_stopped_by_watchpoint_p; |
452 | ||
c906108c SS |
453 | static struct target_ops remote_ops; |
454 | ||
455 | static struct target_ops extended_remote_ops; | |
456 | ||
43ff13b4 | 457 | /* Temporary target ops. Just like the remote_ops and |
23860348 | 458 | extended_remote_ops, but with asynchronous support. */ |
43ff13b4 JM |
459 | static struct target_ops remote_async_ops; |
460 | ||
461 | static struct target_ops extended_async_remote_ops; | |
462 | ||
6426a772 JM |
463 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
464 | ``forever'' still use the normal timeout mechanism. This is | |
465 | currently used by the ASYNC code to guarentee that target reads | |
466 | during the initial connect always time-out. Once getpkt has been | |
467 | modified to return a timeout indication and, in turn | |
468 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 469 | this can go away. */ |
6426a772 JM |
470 | static int wait_forever_enabled_p = 1; |
471 | ||
472 | ||
c906108c SS |
473 | /* This variable chooses whether to send a ^C or a break when the user |
474 | requests program interruption. Although ^C is usually what remote | |
475 | systems expect, and that is the default here, sometimes a break is | |
476 | preferable instead. */ | |
477 | ||
478 | static int remote_break; | |
479 | ||
c906108c SS |
480 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
481 | remote_open knows that we don't have a file open when the program | |
482 | starts. */ | |
819cc324 | 483 | static struct serial *remote_desc = NULL; |
c906108c | 484 | |
c906108c SS |
485 | /* This variable sets the number of bits in an address that are to be |
486 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
487 | leading zeros, the entire address would be sent. This variable | |
488 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The | |
489 | initial implementation of remote.c restricted the address sent in | |
490 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
491 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
492 | address was never sent. Since fixing this bug may cause a break in | |
493 | some remote targets this variable is principly provided to | |
23860348 | 494 | facilitate backward compatibility. */ |
c906108c SS |
495 | |
496 | static int remote_address_size; | |
497 | ||
6426a772 JM |
498 | /* Tempoary to track who currently owns the terminal. See |
499 | target_async_terminal_* for more details. */ | |
500 | ||
501 | static int remote_async_terminal_ours_p; | |
502 | ||
11cf8741 | 503 | \f |
11cf8741 | 504 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
505 | memory read/write packet. MIN (rsa->remote_packet_size, |
506 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 507 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
508 | (speed up transfers). The variables ``preferred_*'' (the user |
509 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 510 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
511 | |
512 | struct memory_packet_config | |
513 | { | |
514 | char *name; | |
515 | long size; | |
516 | int fixed_p; | |
517 | }; | |
518 | ||
519 | /* Compute the current size of a read/write packet. Since this makes | |
520 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
521 | ||
522 | static long | |
523 | get_memory_packet_size (struct memory_packet_config *config) | |
524 | { | |
d01949b6 | 525 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
526 | struct remote_arch_state *rsa = get_remote_arch_state (); |
527 | ||
11cf8741 JM |
528 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk |
529 | law?) that some hosts don't cope very well with large alloca() | |
530 | calls. Eventually the alloca() code will be replaced by calls to | |
531 | xmalloc() and make_cleanups() allowing this restriction to either | |
23860348 | 532 | be lifted or removed. */ |
11cf8741 JM |
533 | #ifndef MAX_REMOTE_PACKET_SIZE |
534 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
535 | #endif | |
3de11b2e | 536 | /* NOTE: 20 ensures we can write at least one byte. */ |
11cf8741 | 537 | #ifndef MIN_REMOTE_PACKET_SIZE |
3de11b2e | 538 | #define MIN_REMOTE_PACKET_SIZE 20 |
11cf8741 JM |
539 | #endif |
540 | long what_they_get; | |
541 | if (config->fixed_p) | |
542 | { | |
543 | if (config->size <= 0) | |
544 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
545 | else | |
546 | what_they_get = config->size; | |
547 | } | |
548 | else | |
549 | { | |
ea9c271d | 550 | what_they_get = get_remote_packet_size (); |
23860348 | 551 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
552 | if (config->size > 0 |
553 | && what_they_get > config->size) | |
554 | what_they_get = config->size; | |
be2a5f71 DJ |
555 | |
556 | /* Limit it to the size of the targets ``g'' response unless we have | |
557 | permission from the stub to use a larger packet size. */ | |
558 | if (rs->explicit_packet_size == 0 | |
559 | && rsa->actual_register_packet_size > 0 | |
560 | && what_they_get > rsa->actual_register_packet_size) | |
561 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 JM |
562 | } |
563 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
564 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
565 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
566 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
6d820c5c DJ |
567 | |
568 | /* Make sure there is room in the global buffer for this packet | |
569 | (including its trailing NUL byte). */ | |
570 | if (rs->buf_size < what_they_get + 1) | |
571 | { | |
572 | rs->buf_size = 2 * what_they_get; | |
573 | rs->buf = xrealloc (rs->buf, 2 * what_they_get); | |
574 | } | |
575 | ||
11cf8741 JM |
576 | return what_they_get; |
577 | } | |
578 | ||
579 | /* Update the size of a read/write packet. If they user wants | |
23860348 | 580 | something really big then do a sanity check. */ |
11cf8741 JM |
581 | |
582 | static void | |
583 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
584 | { | |
585 | int fixed_p = config->fixed_p; | |
586 | long size = config->size; | |
587 | if (args == NULL) | |
8a3fe4f8 | 588 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
589 | else if (strcmp (args, "hard") == 0 |
590 | || strcmp (args, "fixed") == 0) | |
591 | fixed_p = 1; | |
592 | else if (strcmp (args, "soft") == 0 | |
593 | || strcmp (args, "limit") == 0) | |
594 | fixed_p = 0; | |
595 | else | |
596 | { | |
597 | char *end; | |
598 | size = strtoul (args, &end, 0); | |
599 | if (args == end) | |
8a3fe4f8 | 600 | error (_("Invalid %s (bad syntax)."), config->name); |
11cf8741 JM |
601 | #if 0 |
602 | /* Instead of explicitly capping the size of a packet to | |
603 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
604 | instead allowed to set the size to something arbitrarily | |
23860348 | 605 | large. */ |
11cf8741 | 606 | if (size > MAX_REMOTE_PACKET_SIZE) |
8a3fe4f8 | 607 | error (_("Invalid %s (too large)."), config->name); |
11cf8741 JM |
608 | #endif |
609 | } | |
23860348 | 610 | /* Extra checks? */ |
11cf8741 JM |
611 | if (fixed_p && !config->fixed_p) |
612 | { | |
e2e0b3e5 AC |
613 | if (! query (_("The target may not be able to correctly handle a %s\n" |
614 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 615 | config->name, size)) |
8a3fe4f8 | 616 | error (_("Packet size not changed.")); |
11cf8741 | 617 | } |
23860348 | 618 | /* Update the config. */ |
11cf8741 JM |
619 | config->fixed_p = fixed_p; |
620 | config->size = size; | |
621 | } | |
622 | ||
623 | static void | |
624 | show_memory_packet_size (struct memory_packet_config *config) | |
625 | { | |
a3f17187 | 626 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 627 | if (config->fixed_p) |
a3f17187 | 628 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
629 | get_memory_packet_size (config)); |
630 | else | |
a3f17187 | 631 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
632 | get_memory_packet_size (config)); |
633 | } | |
634 | ||
635 | static struct memory_packet_config memory_write_packet_config = | |
636 | { | |
637 | "memory-write-packet-size", | |
638 | }; | |
639 | ||
640 | static void | |
641 | set_memory_write_packet_size (char *args, int from_tty) | |
642 | { | |
643 | set_memory_packet_size (args, &memory_write_packet_config); | |
644 | } | |
645 | ||
646 | static void | |
647 | show_memory_write_packet_size (char *args, int from_tty) | |
648 | { | |
649 | show_memory_packet_size (&memory_write_packet_config); | |
650 | } | |
651 | ||
652 | static long | |
653 | get_memory_write_packet_size (void) | |
654 | { | |
655 | return get_memory_packet_size (&memory_write_packet_config); | |
656 | } | |
657 | ||
658 | static struct memory_packet_config memory_read_packet_config = | |
659 | { | |
660 | "memory-read-packet-size", | |
661 | }; | |
662 | ||
663 | static void | |
664 | set_memory_read_packet_size (char *args, int from_tty) | |
665 | { | |
666 | set_memory_packet_size (args, &memory_read_packet_config); | |
667 | } | |
668 | ||
669 | static void | |
670 | show_memory_read_packet_size (char *args, int from_tty) | |
671 | { | |
672 | show_memory_packet_size (&memory_read_packet_config); | |
673 | } | |
674 | ||
675 | static long | |
676 | get_memory_read_packet_size (void) | |
677 | { | |
678 | long size = get_memory_packet_size (&memory_read_packet_config); | |
679 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an | |
680 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
681 | increased beyond this. */ |
682 | if (size > get_remote_packet_size ()) | |
683 | size = get_remote_packet_size (); | |
11cf8741 JM |
684 | return size; |
685 | } | |
686 | ||
11cf8741 | 687 | \f |
5a2468f5 JM |
688 | /* Generic configuration support for packets the stub optionally |
689 | supports. Allows the user to specify the use of the packet as well | |
23860348 | 690 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
691 | |
692 | enum packet_support | |
693 | { | |
694 | PACKET_SUPPORT_UNKNOWN = 0, | |
695 | PACKET_ENABLE, | |
696 | PACKET_DISABLE | |
697 | }; | |
698 | ||
5a2468f5 JM |
699 | struct packet_config |
700 | { | |
bb572ddd DJ |
701 | const char *name; |
702 | const char *title; | |
7f19b9a2 | 703 | enum auto_boolean detect; |
5a2468f5 JM |
704 | enum packet_support support; |
705 | }; | |
706 | ||
d471ea57 | 707 | /* Analyze a packet's return value and update the packet config |
23860348 | 708 | accordingly. */ |
d471ea57 AC |
709 | |
710 | enum packet_result | |
711 | { | |
712 | PACKET_ERROR, | |
713 | PACKET_OK, | |
714 | PACKET_UNKNOWN | |
715 | }; | |
716 | ||
5a2468f5 | 717 | static void |
d471ea57 | 718 | update_packet_config (struct packet_config *config) |
5a2468f5 | 719 | { |
d471ea57 AC |
720 | switch (config->detect) |
721 | { | |
7f19b9a2 | 722 | case AUTO_BOOLEAN_TRUE: |
d471ea57 AC |
723 | config->support = PACKET_ENABLE; |
724 | break; | |
7f19b9a2 | 725 | case AUTO_BOOLEAN_FALSE: |
d471ea57 AC |
726 | config->support = PACKET_DISABLE; |
727 | break; | |
7f19b9a2 | 728 | case AUTO_BOOLEAN_AUTO: |
d471ea57 AC |
729 | config->support = PACKET_SUPPORT_UNKNOWN; |
730 | break; | |
731 | } | |
5a2468f5 JM |
732 | } |
733 | ||
734 | static void | |
fba45db2 | 735 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
736 | { |
737 | char *support = "internal-error"; | |
738 | switch (config->support) | |
739 | { | |
740 | case PACKET_ENABLE: | |
741 | support = "enabled"; | |
742 | break; | |
743 | case PACKET_DISABLE: | |
744 | support = "disabled"; | |
745 | break; | |
746 | case PACKET_SUPPORT_UNKNOWN: | |
747 | support = "unknown"; | |
748 | break; | |
749 | } | |
750 | switch (config->detect) | |
751 | { | |
7f19b9a2 | 752 | case AUTO_BOOLEAN_AUTO: |
37a105a1 DJ |
753 | printf_filtered (_("Support for the `%s' packet is auto-detected, currently %s.\n"), |
754 | config->name, support); | |
5a2468f5 | 755 | break; |
7f19b9a2 AC |
756 | case AUTO_BOOLEAN_TRUE: |
757 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
758 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
759 | config->name, support); | |
8e248173 | 760 | break; |
5a2468f5 JM |
761 | } |
762 | } | |
763 | ||
764 | static void | |
bb572ddd DJ |
765 | add_packet_config_cmd (struct packet_config *config, const char *name, |
766 | const char *title, int legacy) | |
d471ea57 | 767 | { |
5a2468f5 JM |
768 | char *set_doc; |
769 | char *show_doc; | |
d471ea57 | 770 | char *cmd_name; |
3ed07be4 | 771 | |
5a2468f5 JM |
772 | config->name = name; |
773 | config->title = title; | |
7f19b9a2 | 774 | config->detect = AUTO_BOOLEAN_AUTO; |
8e248173 | 775 | config->support = PACKET_SUPPORT_UNKNOWN; |
b435e160 AC |
776 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
777 | name, title); | |
778 | show_doc = xstrprintf ("Show current use of remote protocol `%s' (%s) packet", | |
779 | name, title); | |
d471ea57 | 780 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 781 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 782 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
2c5b56ce | 783 | &config->detect, set_doc, show_doc, NULL, /* help_doc */ |
bb572ddd DJ |
784 | set_remote_protocol_packet_cmd, |
785 | show_remote_protocol_packet_cmd, | |
786 | &remote_set_cmdlist, &remote_show_cmdlist); | |
23860348 | 787 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
788 | if (legacy) |
789 | { | |
790 | char *legacy_name; | |
b435e160 | 791 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 792 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 793 | &remote_set_cmdlist); |
d471ea57 | 794 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 795 | &remote_show_cmdlist); |
d471ea57 | 796 | } |
5a2468f5 JM |
797 | } |
798 | ||
d471ea57 | 799 | static enum packet_result |
a76d924d | 800 | packet_check_result (const char *buf) |
5a2468f5 | 801 | { |
d471ea57 | 802 | if (buf[0] != '\0') |
5a2468f5 | 803 | { |
d471ea57 | 804 | /* The stub recognized the packet request. Check that the |
23860348 | 805 | operation succeeded. */ |
a76d924d DJ |
806 | if (buf[0] == 'E' |
807 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
808 | && buf[3] == '\0') | |
809 | /* "Enn" - definitly an error. */ | |
810 | return PACKET_ERROR; | |
811 | ||
812 | /* Always treat "E." as an error. This will be used for | |
813 | more verbose error messages, such as E.memtypes. */ | |
814 | if (buf[0] == 'E' && buf[1] == '.') | |
815 | return PACKET_ERROR; | |
816 | ||
817 | /* The packet may or may not be OK. Just assume it is. */ | |
818 | return PACKET_OK; | |
819 | } | |
820 | else | |
821 | /* The stub does not support the packet. */ | |
822 | return PACKET_UNKNOWN; | |
823 | } | |
824 | ||
825 | static enum packet_result | |
826 | packet_ok (const char *buf, struct packet_config *config) | |
827 | { | |
828 | enum packet_result result; | |
829 | ||
830 | result = packet_check_result (buf); | |
831 | switch (result) | |
832 | { | |
833 | case PACKET_OK: | |
834 | case PACKET_ERROR: | |
835 | /* The stub recognized the packet request. */ | |
d471ea57 AC |
836 | switch (config->support) |
837 | { | |
838 | case PACKET_SUPPORT_UNKNOWN: | |
839 | if (remote_debug) | |
840 | fprintf_unfiltered (gdb_stdlog, | |
841 | "Packet %s (%s) is supported\n", | |
842 | config->name, config->title); | |
843 | config->support = PACKET_ENABLE; | |
844 | break; | |
845 | case PACKET_DISABLE: | |
8e65ff28 | 846 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 847 | _("packet_ok: attempt to use a disabled packet")); |
d471ea57 AC |
848 | break; |
849 | case PACKET_ENABLE: | |
850 | break; | |
851 | } | |
a76d924d DJ |
852 | break; |
853 | case PACKET_UNKNOWN: | |
23860348 | 854 | /* The stub does not support the packet. */ |
d471ea57 AC |
855 | switch (config->support) |
856 | { | |
857 | case PACKET_ENABLE: | |
7f19b9a2 | 858 | if (config->detect == AUTO_BOOLEAN_AUTO) |
d471ea57 | 859 | /* If the stub previously indicated that the packet was |
23860348 | 860 | supported then there is a protocol error.. */ |
8a3fe4f8 | 861 | error (_("Protocol error: %s (%s) conflicting enabled responses."), |
d471ea57 AC |
862 | config->name, config->title); |
863 | else | |
23860348 | 864 | /* The user set it wrong. */ |
8a3fe4f8 | 865 | error (_("Enabled packet %s (%s) not recognized by stub"), |
d471ea57 AC |
866 | config->name, config->title); |
867 | break; | |
868 | case PACKET_SUPPORT_UNKNOWN: | |
869 | if (remote_debug) | |
870 | fprintf_unfiltered (gdb_stdlog, | |
871 | "Packet %s (%s) is NOT supported\n", | |
872 | config->name, config->title); | |
873 | config->support = PACKET_DISABLE; | |
874 | break; | |
875 | case PACKET_DISABLE: | |
876 | break; | |
877 | } | |
a76d924d | 878 | break; |
5a2468f5 | 879 | } |
a76d924d DJ |
880 | |
881 | return result; | |
5a2468f5 JM |
882 | } |
883 | ||
444abaca DJ |
884 | enum { |
885 | PACKET_vCont = 0, | |
886 | PACKET_X, | |
887 | PACKET_qSymbol, | |
888 | PACKET_P, | |
889 | PACKET_p, | |
890 | PACKET_Z0, | |
891 | PACKET_Z1, | |
892 | PACKET_Z2, | |
893 | PACKET_Z3, | |
894 | PACKET_Z4, | |
0876f84a | 895 | PACKET_qXfer_auxv, |
fd79ecee | 896 | PACKET_qXfer_memory_map, |
444abaca | 897 | PACKET_qGetTLSAddr, |
be2a5f71 | 898 | PACKET_qSupported, |
89be2091 | 899 | PACKET_QPassSignals, |
444abaca DJ |
900 | PACKET_MAX |
901 | }; | |
506fb367 | 902 | |
444abaca | 903 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 MS |
904 | |
905 | static void | |
444abaca DJ |
906 | set_remote_protocol_packet_cmd (char *args, int from_tty, |
907 | struct cmd_list_element *c) | |
dc8acb97 | 908 | { |
444abaca | 909 | struct packet_config *packet; |
dc8acb97 | 910 | |
444abaca DJ |
911 | for (packet = remote_protocol_packets; |
912 | packet < &remote_protocol_packets[PACKET_MAX]; | |
913 | packet++) | |
914 | { | |
915 | if (&packet->detect == c->var) | |
916 | { | |
917 | update_packet_config (packet); | |
918 | return; | |
919 | } | |
920 | } | |
921 | internal_error (__FILE__, __LINE__, "Could not find config for %s", | |
922 | c->name); | |
dc8acb97 MS |
923 | } |
924 | ||
5a2468f5 | 925 | static void |
444abaca DJ |
926 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
927 | struct cmd_list_element *c, | |
928 | const char *value) | |
5a2468f5 | 929 | { |
444abaca | 930 | struct packet_config *packet; |
5a2468f5 | 931 | |
444abaca DJ |
932 | for (packet = remote_protocol_packets; |
933 | packet < &remote_protocol_packets[PACKET_MAX]; | |
934 | packet++) | |
935 | { | |
936 | if (&packet->detect == c->var) | |
937 | { | |
938 | show_packet_config_cmd (packet); | |
939 | return; | |
940 | } | |
941 | } | |
942 | internal_error (__FILE__, __LINE__, "Could not find config for %s", | |
943 | c->name); | |
5a2468f5 JM |
944 | } |
945 | ||
d471ea57 AC |
946 | /* Should we try one of the 'Z' requests? */ |
947 | ||
948 | enum Z_packet_type | |
949 | { | |
950 | Z_PACKET_SOFTWARE_BP, | |
951 | Z_PACKET_HARDWARE_BP, | |
952 | Z_PACKET_WRITE_WP, | |
953 | Z_PACKET_READ_WP, | |
954 | Z_PACKET_ACCESS_WP, | |
955 | NR_Z_PACKET_TYPES | |
956 | }; | |
96baa820 | 957 | |
d471ea57 | 958 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 959 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 960 | |
7f19b9a2 | 961 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
962 | |
963 | static void | |
fba45db2 KB |
964 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
965 | struct cmd_list_element *c) | |
96baa820 | 966 | { |
d471ea57 AC |
967 | int i; |
968 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
969 | { | |
444abaca DJ |
970 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
971 | update_packet_config (&remote_protocol_packets[PACKET_Z0 + i]); | |
d471ea57 | 972 | } |
96baa820 JM |
973 | } |
974 | ||
975 | static void | |
08546159 AC |
976 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
977 | struct cmd_list_element *c, | |
978 | const char *value) | |
96baa820 | 979 | { |
d471ea57 AC |
980 | int i; |
981 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
982 | { | |
444abaca | 983 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 984 | } |
96baa820 JM |
985 | } |
986 | ||
9d1f7ab2 MS |
987 | /* Should we try the 'ThreadInfo' query packet? |
988 | ||
989 | This variable (NOT available to the user: auto-detect only!) | |
990 | determines whether GDB will use the new, simpler "ThreadInfo" | |
991 | query or the older, more complex syntax for thread queries. | |
802188a7 | 992 | This is an auto-detect variable (set to true at each connect, |
9d1f7ab2 MS |
993 | and set to false when the target fails to recognize it). */ |
994 | ||
995 | static int use_threadinfo_query; | |
996 | static int use_threadextra_query; | |
997 | ||
23860348 | 998 | /* Tokens for use by the asynchronous signal handlers for SIGINT. */ |
d5d6fca5 DJ |
999 | static struct async_signal_handler *sigint_remote_twice_token; |
1000 | static struct async_signal_handler *sigint_remote_token; | |
43ff13b4 | 1001 | |
c906108c SS |
1002 | /* These are pointers to hook functions that may be set in order to |
1003 | modify resume/wait behavior for a particular architecture. */ | |
1004 | ||
9a4105ab AC |
1005 | void (*deprecated_target_resume_hook) (void); |
1006 | void (*deprecated_target_wait_loop_hook) (void); | |
c906108c SS |
1007 | \f |
1008 | ||
c5aa993b | 1009 | |
c906108c SS |
1010 | /* These are the threads which we last sent to the remote system. |
1011 | -1 for all or -2 for not sent yet. */ | |
1012 | static int general_thread; | |
cce74817 | 1013 | static int continue_thread; |
c906108c SS |
1014 | |
1015 | /* Call this function as a result of | |
1016 | 1) A halt indication (T packet) containing a thread id | |
1017 | 2) A direct query of currthread | |
1018 | 3) Successful execution of set thread | |
1019 | */ | |
1020 | ||
1021 | static void | |
fba45db2 | 1022 | record_currthread (int currthread) |
c906108c | 1023 | { |
c906108c | 1024 | general_thread = currthread; |
cce74817 | 1025 | |
c906108c SS |
1026 | /* If this is a new thread, add it to GDB's thread list. |
1027 | If we leave it up to WFI to do this, bad things will happen. */ | |
39f77062 | 1028 | if (!in_thread_list (pid_to_ptid (currthread))) |
0f71a2f6 | 1029 | { |
39f77062 | 1030 | add_thread (pid_to_ptid (currthread)); |
8b93c638 | 1031 | ui_out_text (uiout, "[New "); |
39f77062 | 1032 | ui_out_text (uiout, target_pid_to_str (pid_to_ptid (currthread))); |
8b93c638 | 1033 | ui_out_text (uiout, "]\n"); |
0f71a2f6 | 1034 | } |
c906108c SS |
1035 | } |
1036 | ||
89be2091 DJ |
1037 | static char *last_pass_packet; |
1038 | ||
1039 | /* If 'QPassSignals' is supported, tell the remote stub what signals | |
1040 | it can simply pass through to the inferior without reporting. */ | |
1041 | ||
1042 | static void | |
1043 | remote_pass_signals (void) | |
1044 | { | |
1045 | if (remote_protocol_packets[PACKET_QPassSignals].support != PACKET_DISABLE) | |
1046 | { | |
1047 | char *pass_packet, *p; | |
1048 | int numsigs = (int) TARGET_SIGNAL_LAST; | |
1049 | int count = 0, i; | |
1050 | ||
1051 | gdb_assert (numsigs < 256); | |
1052 | for (i = 0; i < numsigs; i++) | |
1053 | { | |
1054 | if (signal_stop_state (i) == 0 | |
1055 | && signal_print_state (i) == 0 | |
1056 | && signal_pass_state (i) == 1) | |
1057 | count++; | |
1058 | } | |
1059 | pass_packet = xmalloc (count * 3 + strlen ("QPassSignals:") + 1); | |
1060 | strcpy (pass_packet, "QPassSignals:"); | |
1061 | p = pass_packet + strlen (pass_packet); | |
1062 | for (i = 0; i < numsigs; i++) | |
1063 | { | |
1064 | if (signal_stop_state (i) == 0 | |
1065 | && signal_print_state (i) == 0 | |
1066 | && signal_pass_state (i) == 1) | |
1067 | { | |
1068 | if (i >= 16) | |
1069 | *p++ = tohex (i >> 4); | |
1070 | *p++ = tohex (i & 15); | |
1071 | if (count) | |
1072 | *p++ = ';'; | |
1073 | else | |
1074 | break; | |
1075 | count--; | |
1076 | } | |
1077 | } | |
1078 | *p = 0; | |
1079 | if (!last_pass_packet || strcmp (last_pass_packet, pass_packet)) | |
1080 | { | |
1081 | struct remote_state *rs = get_remote_state (); | |
1082 | char *buf = rs->buf; | |
1083 | ||
1084 | putpkt (pass_packet); | |
1085 | getpkt (&rs->buf, &rs->buf_size, 0); | |
1086 | packet_ok (buf, &remote_protocol_packets[PACKET_QPassSignals]); | |
1087 | if (last_pass_packet) | |
1088 | xfree (last_pass_packet); | |
1089 | last_pass_packet = pass_packet; | |
1090 | } | |
1091 | else | |
1092 | xfree (pass_packet); | |
1093 | } | |
1094 | } | |
1095 | ||
c906108c SS |
1096 | #define MAGIC_NULL_PID 42000 |
1097 | ||
1098 | static void | |
fba45db2 | 1099 | set_thread (int th, int gen) |
c906108c | 1100 | { |
d01949b6 | 1101 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 1102 | char *buf = rs->buf; |
cce74817 | 1103 | int state = gen ? general_thread : continue_thread; |
c906108c SS |
1104 | |
1105 | if (state == th) | |
1106 | return; | |
1107 | ||
1108 | buf[0] = 'H'; | |
1109 | buf[1] = gen ? 'g' : 'c'; | |
1110 | if (th == MAGIC_NULL_PID) | |
1111 | { | |
1112 | buf[2] = '0'; | |
1113 | buf[3] = '\0'; | |
1114 | } | |
1115 | else if (th < 0) | |
ea9c271d | 1116 | xsnprintf (&buf[2], get_remote_packet_size () - 2, "-%x", -th); |
c906108c | 1117 | else |
ea9c271d | 1118 | xsnprintf (&buf[2], get_remote_packet_size () - 2, "%x", th); |
c906108c | 1119 | putpkt (buf); |
6d820c5c | 1120 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 1121 | if (gen) |
c5aa993b | 1122 | general_thread = th; |
c906108c | 1123 | else |
cce74817 | 1124 | continue_thread = th; |
c906108c SS |
1125 | } |
1126 | \f | |
1127 | /* Return nonzero if the thread TH is still alive on the remote system. */ | |
1128 | ||
1129 | static int | |
39f77062 | 1130 | remote_thread_alive (ptid_t ptid) |
c906108c | 1131 | { |
6d820c5c | 1132 | struct remote_state *rs = get_remote_state (); |
39f77062 | 1133 | int tid = PIDGET (ptid); |
c906108c | 1134 | |
cce74817 | 1135 | if (tid < 0) |
2e9f7625 | 1136 | xsnprintf (rs->buf, get_remote_packet_size (), "T-%08x", -tid); |
c906108c | 1137 | else |
2e9f7625 DJ |
1138 | xsnprintf (rs->buf, get_remote_packet_size (), "T%08x", tid); |
1139 | putpkt (rs->buf); | |
6d820c5c | 1140 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1141 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
1142 | } |
1143 | ||
1144 | /* About these extended threadlist and threadinfo packets. They are | |
1145 | variable length packets but, the fields within them are often fixed | |
1146 | length. They are redundent enough to send over UDP as is the | |
1147 | remote protocol in general. There is a matching unit test module | |
1148 | in libstub. */ | |
1149 | ||
cce74817 JM |
1150 | #define OPAQUETHREADBYTES 8 |
1151 | ||
1152 | /* a 64 bit opaque identifier */ | |
1153 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
1154 | ||
23860348 MS |
1155 | /* WARNING: This threadref data structure comes from the remote O.S., |
1156 | libstub protocol encoding, and remote.c. it is not particularly | |
1157 | changable. */ | |
cce74817 JM |
1158 | |
1159 | /* Right now, the internal structure is int. We want it to be bigger. | |
1160 | Plan to fix this. | |
c5aa993b | 1161 | */ |
cce74817 | 1162 | |
23860348 | 1163 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 1164 | |
9d1f7ab2 | 1165 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 1166 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
1167 | |
1168 | struct gdb_ext_thread_info | |
c5aa993b | 1169 | { |
23860348 | 1170 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 1171 | int active; /* Has state interesting to GDB? |
23860348 | 1172 | regs, stack. */ |
2bc416ba | 1173 | char display[256]; /* Brief state display, name, |
cedea757 | 1174 | blocked/suspended. */ |
23860348 | 1175 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 1176 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 1177 | whatever. */ |
c5aa993b | 1178 | }; |
cce74817 JM |
1179 | |
1180 | /* The volume of remote transfers can be limited by submitting | |
1181 | a mask containing bits specifying the desired information. | |
1182 | Use a union of these values as the 'selection' parameter to | |
1183 | get_thread_info. FIXME: Make these TAG names more thread specific. | |
c5aa993b | 1184 | */ |
cce74817 JM |
1185 | |
1186 | #define TAG_THREADID 1 | |
1187 | #define TAG_EXISTS 2 | |
1188 | #define TAG_DISPLAY 4 | |
1189 | #define TAG_THREADNAME 8 | |
c5aa993b | 1190 | #define TAG_MOREDISPLAY 16 |
cce74817 | 1191 | |
23860348 | 1192 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 1193 | |
b2dd6311 | 1194 | char *unpack_varlen_hex (char *buff, ULONGEST *result); |
cce74817 | 1195 | |
a14ed312 | 1196 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 1197 | |
a14ed312 | 1198 | static char *pack_nibble (char *buf, int nibble); |
cce74817 | 1199 | |
23860348 | 1200 | static char *pack_hex_byte (char *pkt, int /* unsigned char */ byte); |
cce74817 | 1201 | |
a14ed312 | 1202 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 1203 | |
a14ed312 | 1204 | static char *pack_int (char *buf, int value); |
cce74817 | 1205 | |
a14ed312 | 1206 | static char *unpack_int (char *buf, int *value); |
cce74817 | 1207 | |
a14ed312 | 1208 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 1209 | |
23860348 | 1210 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 1211 | |
23860348 | 1212 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 1213 | |
23860348 | 1214 | void int_to_threadref (threadref *id, int value); |
cce74817 | 1215 | |
23860348 | 1216 | static int threadref_to_int (threadref *ref); |
cce74817 | 1217 | |
23860348 | 1218 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 1219 | |
23860348 | 1220 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 1221 | |
2bc416ba | 1222 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 1223 | threadref *id); |
cce74817 | 1224 | |
a14ed312 | 1225 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 1226 | threadref *expectedref, |
a14ed312 KB |
1227 | struct gdb_ext_thread_info |
1228 | *info); | |
cce74817 JM |
1229 | |
1230 | ||
2bc416ba | 1231 | static int remote_get_threadinfo (threadref *threadid, |
23860348 | 1232 | int fieldset, /*TAG mask */ |
a14ed312 | 1233 | struct gdb_ext_thread_info *info); |
cce74817 | 1234 | |
a14ed312 KB |
1235 | static char *pack_threadlist_request (char *pkt, int startflag, |
1236 | int threadcount, | |
23860348 | 1237 | threadref *nextthread); |
cce74817 | 1238 | |
a14ed312 KB |
1239 | static int parse_threadlist_response (char *pkt, |
1240 | int result_limit, | |
23860348 | 1241 | threadref *original_echo, |
2bc416ba | 1242 | threadref *resultlist, |
23860348 | 1243 | int *doneflag); |
cce74817 | 1244 | |
a14ed312 | 1245 | static int remote_get_threadlist (int startflag, |
23860348 | 1246 | threadref *nextthread, |
a14ed312 KB |
1247 | int result_limit, |
1248 | int *done, | |
2bc416ba | 1249 | int *result_count, |
23860348 | 1250 | threadref *threadlist); |
cce74817 | 1251 | |
23860348 | 1252 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 1253 | |
a14ed312 KB |
1254 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
1255 | void *context, int looplimit); | |
cce74817 | 1256 | |
23860348 | 1257 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 1258 | |
23860348 | 1259 | /* Encode 64 bits in 16 chars of hex. */ |
c906108c SS |
1260 | |
1261 | static const char hexchars[] = "0123456789abcdef"; | |
1262 | ||
1263 | static int | |
fba45db2 | 1264 | ishex (int ch, int *val) |
c906108c SS |
1265 | { |
1266 | if ((ch >= 'a') && (ch <= 'f')) | |
1267 | { | |
1268 | *val = ch - 'a' + 10; | |
1269 | return 1; | |
1270 | } | |
1271 | if ((ch >= 'A') && (ch <= 'F')) | |
1272 | { | |
1273 | *val = ch - 'A' + 10; | |
1274 | return 1; | |
1275 | } | |
1276 | if ((ch >= '0') && (ch <= '9')) | |
1277 | { | |
1278 | *val = ch - '0'; | |
1279 | return 1; | |
1280 | } | |
1281 | return 0; | |
1282 | } | |
1283 | ||
1284 | static int | |
fba45db2 | 1285 | stubhex (int ch) |
c906108c SS |
1286 | { |
1287 | if (ch >= 'a' && ch <= 'f') | |
1288 | return ch - 'a' + 10; | |
1289 | if (ch >= '0' && ch <= '9') | |
1290 | return ch - '0'; | |
1291 | if (ch >= 'A' && ch <= 'F') | |
1292 | return ch - 'A' + 10; | |
1293 | return -1; | |
1294 | } | |
1295 | ||
1296 | static int | |
fba45db2 | 1297 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
1298 | { |
1299 | int nibble; | |
1300 | int retval = 0; | |
1301 | ||
1302 | while (fieldlength) | |
1303 | { | |
1304 | nibble = stubhex (*buff++); | |
1305 | retval |= nibble; | |
1306 | fieldlength--; | |
1307 | if (fieldlength) | |
1308 | retval = retval << 4; | |
1309 | } | |
1310 | return retval; | |
1311 | } | |
1312 | ||
1313 | char * | |
fba45db2 | 1314 | unpack_varlen_hex (char *buff, /* packet to parse */ |
b2dd6311 | 1315 | ULONGEST *result) |
c906108c SS |
1316 | { |
1317 | int nibble; | |
d49c44d5 | 1318 | ULONGEST retval = 0; |
c906108c SS |
1319 | |
1320 | while (ishex (*buff, &nibble)) | |
1321 | { | |
1322 | buff++; | |
1323 | retval = retval << 4; | |
1324 | retval |= nibble & 0x0f; | |
1325 | } | |
1326 | *result = retval; | |
1327 | return buff; | |
1328 | } | |
1329 | ||
1330 | static char * | |
fba45db2 | 1331 | unpack_nibble (char *buf, int *val) |
c906108c SS |
1332 | { |
1333 | ishex (*buf++, val); | |
1334 | return buf; | |
1335 | } | |
1336 | ||
1337 | static char * | |
fba45db2 | 1338 | pack_nibble (char *buf, int nibble) |
c906108c SS |
1339 | { |
1340 | *buf++ = hexchars[(nibble & 0x0f)]; | |
1341 | return buf; | |
1342 | } | |
1343 | ||
1344 | static char * | |
fba45db2 | 1345 | pack_hex_byte (char *pkt, int byte) |
c906108c SS |
1346 | { |
1347 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
1348 | *pkt++ = hexchars[(byte & 0xf)]; | |
1349 | return pkt; | |
1350 | } | |
1351 | ||
1352 | static char * | |
fba45db2 | 1353 | unpack_byte (char *buf, int *value) |
c906108c SS |
1354 | { |
1355 | *value = stub_unpack_int (buf, 2); | |
1356 | return buf + 2; | |
1357 | } | |
1358 | ||
1359 | static char * | |
fba45db2 | 1360 | pack_int (char *buf, int value) |
c906108c SS |
1361 | { |
1362 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
1363 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
1364 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
1365 | buf = pack_hex_byte (buf, (value & 0xff)); | |
1366 | return buf; | |
1367 | } | |
1368 | ||
1369 | static char * | |
fba45db2 | 1370 | unpack_int (char *buf, int *value) |
c906108c SS |
1371 | { |
1372 | *value = stub_unpack_int (buf, 8); | |
1373 | return buf + 8; | |
1374 | } | |
1375 | ||
23860348 | 1376 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 1377 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
1378 | |
1379 | static char * | |
fba45db2 | 1380 | pack_string (char *pkt, char *string) |
c906108c SS |
1381 | { |
1382 | char ch; | |
1383 | int len; | |
1384 | ||
1385 | len = strlen (string); | |
1386 | if (len > 200) | |
23860348 | 1387 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
1388 | pkt = pack_hex_byte (pkt, len); |
1389 | while (len-- > 0) | |
1390 | { | |
1391 | ch = *string++; | |
1392 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 1393 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
1394 | *pkt++ = ch; |
1395 | } | |
1396 | return pkt; | |
1397 | } | |
1398 | #endif /* 0 (unused) */ | |
1399 | ||
1400 | static char * | |
fba45db2 | 1401 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
1402 | { |
1403 | while (length--) | |
1404 | *dest++ = *src++; | |
1405 | *dest = '\0'; | |
1406 | return src; | |
1407 | } | |
1408 | ||
1409 | static char * | |
fba45db2 | 1410 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
1411 | { |
1412 | char *limit; | |
1413 | unsigned char *altid; | |
1414 | ||
1415 | altid = (unsigned char *) id; | |
1416 | limit = pkt + BUF_THREAD_ID_SIZE; | |
1417 | while (pkt < limit) | |
1418 | pkt = pack_hex_byte (pkt, *altid++); | |
1419 | return pkt; | |
1420 | } | |
1421 | ||
1422 | ||
1423 | static char * | |
fba45db2 | 1424 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
1425 | { |
1426 | char *altref; | |
1427 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
1428 | int x, y; | |
1429 | ||
1430 | altref = (char *) id; | |
1431 | ||
1432 | while (inbuf < limit) | |
1433 | { | |
1434 | x = stubhex (*inbuf++); | |
1435 | y = stubhex (*inbuf++); | |
1436 | *altref++ = (x << 4) | y; | |
1437 | } | |
1438 | return inbuf; | |
1439 | } | |
1440 | ||
1441 | /* Externally, threadrefs are 64 bits but internally, they are still | |
1442 | ints. This is due to a mismatch of specifications. We would like | |
1443 | to use 64bit thread references internally. This is an adapter | |
1444 | function. */ | |
1445 | ||
1446 | void | |
fba45db2 | 1447 | int_to_threadref (threadref *id, int value) |
c906108c SS |
1448 | { |
1449 | unsigned char *scan; | |
1450 | ||
1451 | scan = (unsigned char *) id; | |
1452 | { | |
1453 | int i = 4; | |
1454 | while (i--) | |
1455 | *scan++ = 0; | |
1456 | } | |
1457 | *scan++ = (value >> 24) & 0xff; | |
1458 | *scan++ = (value >> 16) & 0xff; | |
1459 | *scan++ = (value >> 8) & 0xff; | |
1460 | *scan++ = (value & 0xff); | |
1461 | } | |
1462 | ||
1463 | static int | |
fba45db2 | 1464 | threadref_to_int (threadref *ref) |
c906108c SS |
1465 | { |
1466 | int i, value = 0; | |
1467 | unsigned char *scan; | |
1468 | ||
cfd77fa1 | 1469 | scan = *ref; |
c906108c SS |
1470 | scan += 4; |
1471 | i = 4; | |
1472 | while (i-- > 0) | |
1473 | value = (value << 8) | ((*scan++) & 0xff); | |
1474 | return value; | |
1475 | } | |
1476 | ||
1477 | static void | |
fba45db2 | 1478 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
1479 | { |
1480 | int i; | |
1481 | unsigned char *csrc, *cdest; | |
1482 | ||
1483 | csrc = (unsigned char *) src; | |
1484 | cdest = (unsigned char *) dest; | |
1485 | i = 8; | |
1486 | while (i--) | |
1487 | *cdest++ = *csrc++; | |
1488 | } | |
1489 | ||
1490 | static int | |
fba45db2 | 1491 | threadmatch (threadref *dest, threadref *src) |
c906108c | 1492 | { |
23860348 | 1493 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
1494 | #if 0 |
1495 | unsigned char *srcp, *destp; | |
1496 | int i, result; | |
1497 | srcp = (char *) src; | |
1498 | destp = (char *) dest; | |
1499 | ||
1500 | result = 1; | |
1501 | while (i-- > 0) | |
1502 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
1503 | return result; | |
1504 | #endif | |
1505 | return 1; | |
1506 | } | |
1507 | ||
1508 | /* | |
c5aa993b JM |
1509 | threadid:1, # always request threadid |
1510 | context_exists:2, | |
1511 | display:4, | |
1512 | unique_name:8, | |
1513 | more_display:16 | |
1514 | */ | |
c906108c SS |
1515 | |
1516 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
1517 | ||
1518 | static char * | |
fba45db2 | 1519 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 1520 | { |
23860348 MS |
1521 | *pkt++ = 'q'; /* Info Query */ |
1522 | *pkt++ = 'P'; /* process or thread info */ | |
1523 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 1524 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 1525 | *pkt = '\0'; /* terminate */ |
c906108c SS |
1526 | return pkt; |
1527 | } | |
1528 | ||
23860348 | 1529 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 1530 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 1531 | add more fields as time goes by. */ |
c906108c | 1532 | |
23860348 | 1533 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 1534 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 1535 | fetch registers and its stack? */ |
c5aa993b | 1536 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 1537 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 1538 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 1539 | the process. */ |
c906108c SS |
1540 | |
1541 | static int | |
fba45db2 KB |
1542 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
1543 | struct gdb_ext_thread_info *info) | |
c906108c | 1544 | { |
d01949b6 | 1545 | struct remote_state *rs = get_remote_state (); |
c906108c | 1546 | int mask, length; |
cfd77fa1 | 1547 | int tag; |
c906108c | 1548 | threadref ref; |
6d820c5c | 1549 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
1550 | int retval = 1; |
1551 | ||
23860348 | 1552 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
1553 | info->active = 0; |
1554 | info->display[0] = '\0'; | |
1555 | info->shortname[0] = '\0'; | |
1556 | info->more_display[0] = '\0'; | |
1557 | ||
23860348 MS |
1558 | /* Assume the characters indicating the packet type have been |
1559 | stripped. */ | |
c906108c SS |
1560 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
1561 | pkt = unpack_threadid (pkt, &ref); | |
1562 | ||
1563 | if (mask == 0) | |
8a3fe4f8 | 1564 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 1565 | if (!threadmatch (&ref, expectedref)) |
23860348 | 1566 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 1567 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
1568 | return 0; |
1569 | } | |
1570 | copy_threadref (&info->threadid, &ref); | |
1571 | ||
23860348 | 1572 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 1573 | |
23860348 MS |
1574 | /* Packets are terminated with nulls. */ |
1575 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
1576 | { |
1577 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
1578 | pkt = unpack_byte (pkt, &length); /* length */ |
1579 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 1580 | { |
8a3fe4f8 | 1581 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
1582 | retval = 0; |
1583 | break; | |
1584 | } | |
1585 | if (tag == TAG_THREADID) | |
1586 | { | |
1587 | if (length != 16) | |
1588 | { | |
8a3fe4f8 | 1589 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
1590 | retval = 0; |
1591 | break; | |
1592 | } | |
1593 | pkt = unpack_threadid (pkt, &ref); | |
1594 | mask = mask & ~TAG_THREADID; | |
1595 | continue; | |
1596 | } | |
1597 | if (tag == TAG_EXISTS) | |
1598 | { | |
1599 | info->active = stub_unpack_int (pkt, length); | |
1600 | pkt += length; | |
1601 | mask = mask & ~(TAG_EXISTS); | |
1602 | if (length > 8) | |
1603 | { | |
8a3fe4f8 | 1604 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
1605 | retval = 0; |
1606 | break; | |
1607 | } | |
1608 | continue; | |
1609 | } | |
1610 | if (tag == TAG_THREADNAME) | |
1611 | { | |
1612 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
1613 | mask = mask & ~TAG_THREADNAME; | |
1614 | continue; | |
1615 | } | |
1616 | if (tag == TAG_DISPLAY) | |
1617 | { | |
1618 | pkt = unpack_string (pkt, &info->display[0], length); | |
1619 | mask = mask & ~TAG_DISPLAY; | |
1620 | continue; | |
1621 | } | |
1622 | if (tag == TAG_MOREDISPLAY) | |
1623 | { | |
1624 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
1625 | mask = mask & ~TAG_MOREDISPLAY; | |
1626 | continue; | |
1627 | } | |
8a3fe4f8 | 1628 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 1629 | break; /* Not a tag we know about. */ |
c906108c SS |
1630 | } |
1631 | return retval; | |
1632 | } | |
1633 | ||
1634 | static int | |
fba45db2 KB |
1635 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
1636 | struct gdb_ext_thread_info *info) | |
c906108c | 1637 | { |
d01949b6 | 1638 | struct remote_state *rs = get_remote_state (); |
c906108c | 1639 | int result; |
c906108c | 1640 | |
2e9f7625 DJ |
1641 | pack_threadinfo_request (rs->buf, fieldset, threadid); |
1642 | putpkt (rs->buf); | |
6d820c5c | 1643 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1644 | result = remote_unpack_thread_info_response (rs->buf + 2, |
23860348 | 1645 | threadid, info); |
c906108c SS |
1646 | return result; |
1647 | } | |
1648 | ||
c906108c SS |
1649 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
1650 | ||
1651 | static char * | |
fba45db2 KB |
1652 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
1653 | threadref *nextthread) | |
c906108c SS |
1654 | { |
1655 | *pkt++ = 'q'; /* info query packet */ | |
1656 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 1657 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
1658 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
1659 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
1660 | *pkt = '\0'; | |
1661 | return pkt; | |
1662 | } | |
1663 | ||
1664 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
1665 | ||
1666 | static int | |
fba45db2 KB |
1667 | parse_threadlist_response (char *pkt, int result_limit, |
1668 | threadref *original_echo, threadref *resultlist, | |
1669 | int *doneflag) | |
c906108c | 1670 | { |
d01949b6 | 1671 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1672 | char *limit; |
1673 | int count, resultcount, done; | |
1674 | ||
1675 | resultcount = 0; | |
1676 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 1677 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 1678 | /* done parse past here */ |
c906108c SS |
1679 | pkt = unpack_byte (pkt, &count); /* count field */ |
1680 | pkt = unpack_nibble (pkt, &done); | |
1681 | /* The first threadid is the argument threadid. */ | |
1682 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
1683 | while ((count-- > 0) && (pkt < limit)) | |
1684 | { | |
1685 | pkt = unpack_threadid (pkt, resultlist++); | |
1686 | if (resultcount++ >= result_limit) | |
1687 | break; | |
1688 | } | |
1689 | if (doneflag) | |
1690 | *doneflag = done; | |
1691 | return resultcount; | |
1692 | } | |
1693 | ||
1694 | static int | |
fba45db2 KB |
1695 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
1696 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 1697 | { |
d01949b6 | 1698 | struct remote_state *rs = get_remote_state (); |
c906108c | 1699 | static threadref echo_nextthread; |
c906108c SS |
1700 | int result = 1; |
1701 | ||
23860348 | 1702 | /* Trancate result limit to be smaller than the packet size. */ |
ea9c271d DJ |
1703 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) >= get_remote_packet_size ()) |
1704 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; | |
c906108c | 1705 | |
6d820c5c DJ |
1706 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
1707 | putpkt (rs->buf); | |
1708 | getpkt (&rs->buf, &rs->buf_size, 0); | |
c906108c SS |
1709 | |
1710 | *result_count = | |
6d820c5c | 1711 | parse_threadlist_response (rs->buf + 2, result_limit, &echo_nextthread, |
c906108c SS |
1712 | threadlist, done); |
1713 | ||
1714 | if (!threadmatch (&echo_nextthread, nextthread)) | |
1715 | { | |
23860348 MS |
1716 | /* FIXME: This is a good reason to drop the packet. */ |
1717 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
1718 | /* Possabilities : |
1719 | retransmit immediatly - race conditions | |
1720 | retransmit after timeout - yes | |
1721 | exit | |
1722 | wait for packet, then exit | |
1723 | */ | |
8a3fe4f8 | 1724 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 1725 | return 0; /* I choose simply exiting. */ |
c906108c SS |
1726 | } |
1727 | if (*result_count <= 0) | |
1728 | { | |
1729 | if (*done != 1) | |
1730 | { | |
8a3fe4f8 | 1731 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
1732 | result = 0; |
1733 | } | |
1734 | return result; /* break; */ | |
1735 | } | |
1736 | if (*result_count > result_limit) | |
1737 | { | |
1738 | *result_count = 0; | |
8a3fe4f8 | 1739 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
1740 | return 0; |
1741 | } | |
1742 | return result; | |
1743 | } | |
1744 | ||
23860348 MS |
1745 | /* This is the interface between remote and threads, remotes upper |
1746 | interface. */ | |
c906108c SS |
1747 | |
1748 | /* remote_find_new_threads retrieves the thread list and for each | |
1749 | thread in the list, looks up the thread in GDB's internal list, | |
1750 | ading the thread if it does not already exist. This involves | |
1751 | getting partial thread lists from the remote target so, polling the | |
1752 | quit_flag is required. */ | |
1753 | ||
1754 | ||
23860348 | 1755 | /* About this many threadisds fit in a packet. */ |
c906108c SS |
1756 | |
1757 | #define MAXTHREADLISTRESULTS 32 | |
1758 | ||
1759 | static int | |
fba45db2 KB |
1760 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
1761 | int looplimit) | |
c906108c SS |
1762 | { |
1763 | int done, i, result_count; | |
1764 | int startflag = 1; | |
1765 | int result = 1; | |
1766 | int loopcount = 0; | |
1767 | static threadref nextthread; | |
1768 | static threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
1769 | ||
1770 | done = 0; | |
1771 | while (!done) | |
1772 | { | |
1773 | if (loopcount++ > looplimit) | |
1774 | { | |
1775 | result = 0; | |
8a3fe4f8 | 1776 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
1777 | break; |
1778 | } | |
1779 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS, | |
1780 | &done, &result_count, resultthreadlist)) | |
1781 | { | |
1782 | result = 0; | |
1783 | break; | |
1784 | } | |
23860348 | 1785 | /* Clear for later iterations. */ |
c906108c SS |
1786 | startflag = 0; |
1787 | /* Setup to resume next batch of thread references, set nextthread. */ | |
1788 | if (result_count >= 1) | |
1789 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |
1790 | i = 0; | |
1791 | while (result_count--) | |
1792 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |
1793 | break; | |
1794 | } | |
1795 | return result; | |
1796 | } | |
1797 | ||
1798 | static int | |
fba45db2 | 1799 | remote_newthread_step (threadref *ref, void *context) |
c906108c | 1800 | { |
39f77062 | 1801 | ptid_t ptid; |
c906108c | 1802 | |
39f77062 KB |
1803 | ptid = pid_to_ptid (threadref_to_int (ref)); |
1804 | ||
1805 | if (!in_thread_list (ptid)) | |
1806 | add_thread (ptid); | |
c906108c SS |
1807 | return 1; /* continue iterator */ |
1808 | } | |
1809 | ||
1810 | #define CRAZY_MAX_THREADS 1000 | |
1811 | ||
39f77062 KB |
1812 | static ptid_t |
1813 | remote_current_thread (ptid_t oldpid) | |
c906108c | 1814 | { |
d01949b6 | 1815 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1816 | |
1817 | putpkt ("qC"); | |
6d820c5c | 1818 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1819 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
c273b20f JB |
1820 | /* Use strtoul here, so we'll correctly parse values whose highest |
1821 | bit is set. The protocol carries them as a simple series of | |
1822 | hex digits; in the absence of a sign, strtol will see such | |
1823 | values as positive numbers out of range for signed 'long', and | |
1824 | return LONG_MAX to indicate an overflow. */ | |
2e9f7625 | 1825 | return pid_to_ptid (strtoul (&rs->buf[2], NULL, 16)); |
c906108c SS |
1826 | else |
1827 | return oldpid; | |
1828 | } | |
1829 | ||
802188a7 RM |
1830 | /* Find new threads for info threads command. |
1831 | * Original version, using John Metzler's thread protocol. | |
9d1f7ab2 | 1832 | */ |
cce74817 JM |
1833 | |
1834 | static void | |
fba45db2 | 1835 | remote_find_new_threads (void) |
c906108c | 1836 | { |
c5aa993b JM |
1837 | remote_threadlist_iterator (remote_newthread_step, 0, |
1838 | CRAZY_MAX_THREADS); | |
39f77062 KB |
1839 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) /* ack ack ack */ |
1840 | inferior_ptid = remote_current_thread (inferior_ptid); | |
c906108c SS |
1841 | } |
1842 | ||
9d1f7ab2 MS |
1843 | /* |
1844 | * Find all threads for info threads command. | |
1845 | * Uses new thread protocol contributed by Cisco. | |
1846 | * Falls back and attempts to use the older method (above) | |
1847 | * if the target doesn't respond to the new method. | |
1848 | */ | |
1849 | ||
0f71a2f6 JM |
1850 | static void |
1851 | remote_threads_info (void) | |
1852 | { | |
d01949b6 | 1853 | struct remote_state *rs = get_remote_state (); |
085dd6e6 | 1854 | char *bufp; |
0f71a2f6 JM |
1855 | int tid; |
1856 | ||
1857 | if (remote_desc == 0) /* paranoia */ | |
8a3fe4f8 | 1858 | error (_("Command can only be used when connected to the remote target.")); |
0f71a2f6 | 1859 | |
9d1f7ab2 MS |
1860 | if (use_threadinfo_query) |
1861 | { | |
1862 | putpkt ("qfThreadInfo"); | |
6d820c5c | 1863 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1864 | bufp = rs->buf; |
9d1f7ab2 | 1865 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 1866 | { |
9d1f7ab2 MS |
1867 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
1868 | { | |
1869 | do | |
1870 | { | |
c273b20f JB |
1871 | /* Use strtoul here, so we'll correctly parse values |
1872 | whose highest bit is set. The protocol carries | |
1873 | them as a simple series of hex digits; in the | |
1874 | absence of a sign, strtol will see such values as | |
1875 | positive numbers out of range for signed 'long', | |
1876 | and return LONG_MAX to indicate an overflow. */ | |
1877 | tid = strtoul (bufp, &bufp, 16); | |
39f77062 KB |
1878 | if (tid != 0 && !in_thread_list (pid_to_ptid (tid))) |
1879 | add_thread (pid_to_ptid (tid)); | |
9d1f7ab2 MS |
1880 | } |
1881 | while (*bufp++ == ','); /* comma-separated list */ | |
1882 | putpkt ("qsThreadInfo"); | |
6d820c5c | 1883 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1884 | bufp = rs->buf; |
9d1f7ab2 MS |
1885 | } |
1886 | return; /* done */ | |
1887 | } | |
1888 | } | |
1889 | ||
23860348 | 1890 | /* Else fall back to old method based on jmetzler protocol. */ |
9d1f7ab2 MS |
1891 | use_threadinfo_query = 0; |
1892 | remote_find_new_threads (); | |
1893 | return; | |
1894 | } | |
1895 | ||
802188a7 | 1896 | /* |
9d1f7ab2 MS |
1897 | * Collect a descriptive string about the given thread. |
1898 | * The target may say anything it wants to about the thread | |
1899 | * (typically info about its blocked / runnable state, name, etc.). | |
1900 | * This string will appear in the info threads display. | |
802188a7 | 1901 | * |
9d1f7ab2 MS |
1902 | * Optional: targets are not required to implement this function. |
1903 | */ | |
1904 | ||
1905 | static char * | |
1906 | remote_threads_extra_info (struct thread_info *tp) | |
1907 | { | |
d01949b6 | 1908 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
1909 | int result; |
1910 | int set; | |
1911 | threadref id; | |
1912 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 1913 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
1914 | int n = 0; /* position in display_buf */ |
1915 | ||
1916 | if (remote_desc == 0) /* paranoia */ | |
8e65ff28 | 1917 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 1918 | _("remote_threads_extra_info")); |
9d1f7ab2 MS |
1919 | |
1920 | if (use_threadextra_query) | |
1921 | { | |
2e9f7625 | 1922 | xsnprintf (rs->buf, get_remote_packet_size (), "qThreadExtraInfo,%x", |
ecbc58df | 1923 | PIDGET (tp->ptid)); |
2e9f7625 | 1924 | putpkt (rs->buf); |
6d820c5c | 1925 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1926 | if (rs->buf[0] != 0) |
9d1f7ab2 | 1927 | { |
2e9f7625 DJ |
1928 | n = min (strlen (rs->buf) / 2, sizeof (display_buf)); |
1929 | result = hex2bin (rs->buf, (gdb_byte *) display_buf, n); | |
30559e10 | 1930 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
1931 | return display_buf; |
1932 | } | |
0f71a2f6 | 1933 | } |
9d1f7ab2 MS |
1934 | |
1935 | /* If the above query fails, fall back to the old method. */ | |
1936 | use_threadextra_query = 0; | |
1937 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
1938 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
39f77062 | 1939 | int_to_threadref (&id, PIDGET (tp->ptid)); |
9d1f7ab2 MS |
1940 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
1941 | if (threadinfo.active) | |
0f71a2f6 | 1942 | { |
9d1f7ab2 | 1943 | if (*threadinfo.shortname) |
2bc416ba | 1944 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
ecbc58df | 1945 | " Name: %s,", threadinfo.shortname); |
9d1f7ab2 | 1946 | if (*threadinfo.display) |
2bc416ba | 1947 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 1948 | " State: %s,", threadinfo.display); |
9d1f7ab2 | 1949 | if (*threadinfo.more_display) |
2bc416ba | 1950 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 1951 | " Priority: %s", threadinfo.more_display); |
9d1f7ab2 MS |
1952 | |
1953 | if (n > 0) | |
c5aa993b | 1954 | { |
23860348 | 1955 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
1956 | if (',' == display_buf[n-1]) |
1957 | display_buf[n-1] = ' '; | |
1958 | return display_buf; | |
c5aa993b | 1959 | } |
0f71a2f6 | 1960 | } |
9d1f7ab2 | 1961 | return NULL; |
0f71a2f6 | 1962 | } |
c906108c | 1963 | \f |
c5aa993b | 1964 | |
24b06219 | 1965 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
1966 | |
1967 | static void | |
fba45db2 | 1968 | extended_remote_restart (void) |
c906108c | 1969 | { |
d01949b6 | 1970 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1971 | |
1972 | /* Send the restart command; for reasons I don't understand the | |
1973 | remote side really expects a number after the "R". */ | |
ea9c271d | 1974 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); |
6d820c5c | 1975 | putpkt (rs->buf); |
c906108c | 1976 | |
ad9a8f3f | 1977 | remote_fileio_reset (); |
2bc416ba | 1978 | |
c906108c SS |
1979 | /* Now query for status so this looks just like we restarted |
1980 | gdbserver from scratch. */ | |
1981 | putpkt ("?"); | |
01d3a6ce | 1982 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c SS |
1983 | } |
1984 | \f | |
1985 | /* Clean up connection to a remote debugger. */ | |
1986 | ||
c906108c | 1987 | static void |
fba45db2 | 1988 | remote_close (int quitting) |
c906108c SS |
1989 | { |
1990 | if (remote_desc) | |
2cd58942 | 1991 | serial_close (remote_desc); |
c906108c SS |
1992 | remote_desc = NULL; |
1993 | } | |
1994 | ||
23860348 | 1995 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
1996 | |
1997 | static void | |
fba45db2 | 1998 | get_offsets (void) |
c906108c | 1999 | { |
d01949b6 | 2000 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 2001 | char *buf; |
085dd6e6 | 2002 | char *ptr; |
c906108c SS |
2003 | int lose; |
2004 | CORE_ADDR text_addr, data_addr, bss_addr; | |
2005 | struct section_offsets *offs; | |
2006 | ||
2007 | putpkt ("qOffsets"); | |
6d820c5c | 2008 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2009 | buf = rs->buf; |
c906108c SS |
2010 | |
2011 | if (buf[0] == '\000') | |
2012 | return; /* Return silently. Stub doesn't support | |
23860348 | 2013 | this command. */ |
c906108c SS |
2014 | if (buf[0] == 'E') |
2015 | { | |
8a3fe4f8 | 2016 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
2017 | return; |
2018 | } | |
2019 | ||
2020 | /* Pick up each field in turn. This used to be done with scanf, but | |
2021 | scanf will make trouble if CORE_ADDR size doesn't match | |
2022 | conversion directives correctly. The following code will work | |
2023 | with any size of CORE_ADDR. */ | |
2024 | text_addr = data_addr = bss_addr = 0; | |
2025 | ptr = buf; | |
2026 | lose = 0; | |
2027 | ||
2028 | if (strncmp (ptr, "Text=", 5) == 0) | |
2029 | { | |
2030 | ptr += 5; | |
2031 | /* Don't use strtol, could lose on big values. */ | |
2032 | while (*ptr && *ptr != ';') | |
2033 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
2034 | } | |
2035 | else | |
2036 | lose = 1; | |
2037 | ||
2038 | if (!lose && strncmp (ptr, ";Data=", 6) == 0) | |
2039 | { | |
2040 | ptr += 6; | |
2041 | while (*ptr && *ptr != ';') | |
2042 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
2043 | } | |
2044 | else | |
2045 | lose = 1; | |
2046 | ||
2047 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
2048 | { | |
2049 | ptr += 5; | |
2050 | while (*ptr && *ptr != ';') | |
2051 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
2052 | } | |
2053 | else | |
2054 | lose = 1; | |
2055 | ||
2056 | if (lose) | |
8a3fe4f8 | 2057 | error (_("Malformed response to offset query, %s"), buf); |
c906108c SS |
2058 | |
2059 | if (symfile_objfile == NULL) | |
2060 | return; | |
2061 | ||
802188a7 | 2062 | offs = ((struct section_offsets *) |
a39a16c4 | 2063 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 2064 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 2065 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 2066 | |
a4c8257b | 2067 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; |
c906108c SS |
2068 | |
2069 | /* This is a temporary kludge to force data and bss to use the same offsets | |
2070 | because that's what nlmconv does now. The real solution requires changes | |
2071 | to the stub and remote.c that I don't have time to do right now. */ | |
2072 | ||
a4c8257b EZ |
2073 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; |
2074 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
c906108c SS |
2075 | |
2076 | objfile_relocate (symfile_objfile, offs); | |
2077 | } | |
2078 | ||
8621d6a9 | 2079 | /* Stub for catch_exception. */ |
0f71a2f6 | 2080 | |
9cbc821d | 2081 | static void |
8621d6a9 | 2082 | remote_start_remote (struct ui_out *uiout, void *from_tty_p) |
c906108c | 2083 | { |
8621d6a9 DJ |
2084 | int from_tty = * (int *) from_tty_p; |
2085 | ||
23860348 | 2086 | immediate_quit++; /* Allow user to interrupt it. */ |
c906108c SS |
2087 | |
2088 | /* Ack any packet which the remote side has already sent. */ | |
2cd58942 | 2089 | serial_write (remote_desc, "+", 1); |
c906108c SS |
2090 | |
2091 | /* Let the stub know that we want it to return the thread. */ | |
2092 | set_thread (-1, 0); | |
2093 | ||
39f77062 | 2094 | inferior_ptid = remote_current_thread (inferior_ptid); |
c906108c | 2095 | |
23860348 | 2096 | get_offsets (); /* Get text, data & bss offsets. */ |
c906108c | 2097 | |
23860348 | 2098 | putpkt ("?"); /* Initiate a query from remote machine. */ |
8edbea78 | 2099 | immediate_quit--; |
c906108c | 2100 | |
8621d6a9 | 2101 | start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
c906108c SS |
2102 | } |
2103 | ||
2104 | /* Open a connection to a remote debugger. | |
2105 | NAME is the filename used for communication. */ | |
2106 | ||
2107 | static void | |
fba45db2 | 2108 | remote_open (char *name, int from_tty) |
c906108c | 2109 | { |
92d1e331 | 2110 | remote_open_1 (name, from_tty, &remote_ops, 0, 0); |
c906108c SS |
2111 | } |
2112 | ||
23860348 | 2113 | /* Just like remote_open, but with asynchronous support. */ |
43ff13b4 | 2114 | static void |
fba45db2 | 2115 | remote_async_open (char *name, int from_tty) |
43ff13b4 | 2116 | { |
92d1e331 | 2117 | remote_open_1 (name, from_tty, &remote_async_ops, 0, 1); |
43ff13b4 JM |
2118 | } |
2119 | ||
c906108c SS |
2120 | /* Open a connection to a remote debugger using the extended |
2121 | remote gdb protocol. NAME is the filename used for communication. */ | |
2122 | ||
2123 | static void | |
fba45db2 | 2124 | extended_remote_open (char *name, int from_tty) |
c906108c | 2125 | { |
92d1e331 DJ |
2126 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */, |
2127 | 0 /* async_p */); | |
c906108c SS |
2128 | } |
2129 | ||
23860348 | 2130 | /* Just like extended_remote_open, but with asynchronous support. */ |
43ff13b4 | 2131 | static void |
fba45db2 | 2132 | extended_remote_async_open (char *name, int from_tty) |
43ff13b4 | 2133 | { |
92d1e331 DJ |
2134 | remote_open_1 (name, from_tty, &extended_async_remote_ops, |
2135 | 1 /*extended_p */, 1 /* async_p */); | |
43ff13b4 JM |
2136 | } |
2137 | ||
c906108c SS |
2138 | /* Generic code for opening a connection to a remote target. */ |
2139 | ||
d471ea57 AC |
2140 | static void |
2141 | init_all_packet_configs (void) | |
2142 | { | |
2143 | int i; | |
444abaca DJ |
2144 | for (i = 0; i < PACKET_MAX; i++) |
2145 | update_packet_config (&remote_protocol_packets[i]); | |
d471ea57 AC |
2146 | } |
2147 | ||
23860348 | 2148 | /* Symbol look-up. */ |
dc8acb97 MS |
2149 | |
2150 | static void | |
2151 | remote_check_symbols (struct objfile *objfile) | |
2152 | { | |
d01949b6 | 2153 | struct remote_state *rs = get_remote_state (); |
dc8acb97 MS |
2154 | char *msg, *reply, *tmp; |
2155 | struct minimal_symbol *sym; | |
2156 | int end; | |
2157 | ||
444abaca | 2158 | if (remote_protocol_packets[PACKET_qSymbol].support == PACKET_DISABLE) |
dc8acb97 MS |
2159 | return; |
2160 | ||
6d820c5c DJ |
2161 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
2162 | because we need both at the same time. */ | |
ea9c271d | 2163 | msg = alloca (get_remote_packet_size ()); |
6d820c5c | 2164 | |
23860348 | 2165 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
2166 | |
2167 | putpkt ("qSymbol::"); | |
6d820c5c DJ |
2168 | getpkt (&rs->buf, &rs->buf_size, 0); |
2169 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSymbol]); | |
2e9f7625 | 2170 | reply = rs->buf; |
dc8acb97 MS |
2171 | |
2172 | while (strncmp (reply, "qSymbol:", 8) == 0) | |
2173 | { | |
2174 | tmp = &reply[8]; | |
cfd77fa1 | 2175 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
2176 | msg[end] = '\0'; |
2177 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
2178 | if (sym == NULL) | |
ea9c271d | 2179 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
dc8acb97 | 2180 | else |
ea9c271d | 2181 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", |
ecbc58df WZ |
2182 | paddr_nz (SYMBOL_VALUE_ADDRESS (sym)), |
2183 | &reply[8]); | |
dc8acb97 | 2184 | putpkt (msg); |
6d820c5c | 2185 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2186 | reply = rs->buf; |
dc8acb97 MS |
2187 | } |
2188 | } | |
2189 | ||
9db8d71f DJ |
2190 | static struct serial * |
2191 | remote_serial_open (char *name) | |
2192 | { | |
2193 | static int udp_warning = 0; | |
2194 | ||
2195 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
2196 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
2197 | serial connection is reliable and not the serial connection promising | |
2198 | to be. */ | |
2199 | if (!udp_warning && strncmp (name, "udp:", 4) == 0) | |
2200 | { | |
8a3fe4f8 AC |
2201 | warning (_("\ |
2202 | The remote protocol may be unreliable over UDP.\n\ | |
2203 | Some events may be lost, rendering further debugging impossible.")); | |
9db8d71f DJ |
2204 | udp_warning = 1; |
2205 | } | |
2206 | ||
2207 | return serial_open (name); | |
2208 | } | |
2209 | ||
be2a5f71 DJ |
2210 | /* This type describes each known response to the qSupported |
2211 | packet. */ | |
2212 | struct protocol_feature | |
2213 | { | |
2214 | /* The name of this protocol feature. */ | |
2215 | const char *name; | |
2216 | ||
2217 | /* The default for this protocol feature. */ | |
2218 | enum packet_support default_support; | |
2219 | ||
2220 | /* The function to call when this feature is reported, or after | |
2221 | qSupported processing if the feature is not supported. | |
2222 | The first argument points to this structure. The second | |
2223 | argument indicates whether the packet requested support be | |
2224 | enabled, disabled, or probed (or the default, if this function | |
2225 | is being called at the end of processing and this feature was | |
2226 | not reported). The third argument may be NULL; if not NULL, it | |
2227 | is a NUL-terminated string taken from the packet following | |
2228 | this feature's name and an equals sign. */ | |
2229 | void (*func) (const struct protocol_feature *, enum packet_support, | |
2230 | const char *); | |
2231 | ||
2232 | /* The corresponding packet for this feature. Only used if | |
2233 | FUNC is remote_supported_packet. */ | |
2234 | int packet; | |
2235 | }; | |
2236 | ||
be2a5f71 DJ |
2237 | static void |
2238 | remote_supported_packet (const struct protocol_feature *feature, | |
2239 | enum packet_support support, | |
2240 | const char *argument) | |
2241 | { | |
2242 | if (argument) | |
2243 | { | |
2244 | warning (_("Remote qSupported response supplied an unexpected value for" | |
2245 | " \"%s\"."), feature->name); | |
2246 | return; | |
2247 | } | |
2248 | ||
2249 | if (remote_protocol_packets[feature->packet].support | |
2250 | == PACKET_SUPPORT_UNKNOWN) | |
2251 | remote_protocol_packets[feature->packet].support = support; | |
2252 | } | |
be2a5f71 DJ |
2253 | |
2254 | static void | |
2255 | remote_packet_size (const struct protocol_feature *feature, | |
2256 | enum packet_support support, const char *value) | |
2257 | { | |
2258 | struct remote_state *rs = get_remote_state (); | |
2259 | ||
2260 | int packet_size; | |
2261 | char *value_end; | |
2262 | ||
2263 | if (support != PACKET_ENABLE) | |
2264 | return; | |
2265 | ||
2266 | if (value == NULL || *value == '\0') | |
2267 | { | |
2268 | warning (_("Remote target reported \"%s\" without a size."), | |
2269 | feature->name); | |
2270 | return; | |
2271 | } | |
2272 | ||
2273 | errno = 0; | |
2274 | packet_size = strtol (value, &value_end, 16); | |
2275 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
2276 | { | |
2277 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
2278 | feature->name, value); | |
2279 | return; | |
2280 | } | |
2281 | ||
2282 | if (packet_size > MAX_REMOTE_PACKET_SIZE) | |
2283 | { | |
2284 | warning (_("limiting remote suggested packet size (%d bytes) to %d"), | |
2285 | packet_size, MAX_REMOTE_PACKET_SIZE); | |
2286 | packet_size = MAX_REMOTE_PACKET_SIZE; | |
2287 | } | |
2288 | ||
2289 | /* Record the new maximum packet size. */ | |
2290 | rs->explicit_packet_size = packet_size; | |
2291 | } | |
2292 | ||
2293 | static struct protocol_feature remote_protocol_features[] = { | |
0876f84a | 2294 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 2295 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee DJ |
2296 | PACKET_qXfer_auxv }, |
2297 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, | |
89be2091 DJ |
2298 | PACKET_qXfer_memory_map }, |
2299 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, | |
2300 | PACKET_QPassSignals }, | |
be2a5f71 DJ |
2301 | }; |
2302 | ||
2303 | static void | |
2304 | remote_query_supported (void) | |
2305 | { | |
2306 | struct remote_state *rs = get_remote_state (); | |
2307 | char *next; | |
2308 | int i; | |
2309 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
2310 | ||
2311 | /* The packet support flags are handled differently for this packet | |
2312 | than for most others. We treat an error, a disabled packet, and | |
2313 | an empty response identically: any features which must be reported | |
2314 | to be used will be automatically disabled. An empty buffer | |
2315 | accomplishes this, since that is also the representation for a list | |
2316 | containing no features. */ | |
2317 | ||
2318 | rs->buf[0] = 0; | |
2319 | if (remote_protocol_packets[PACKET_qSupported].support != PACKET_DISABLE) | |
2320 | { | |
2321 | putpkt ("qSupported"); | |
2322 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2323 | ||
2324 | /* If an error occured, warn, but do not return - just reset the | |
2325 | buffer to empty and go on to disable features. */ | |
2326 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
2327 | == PACKET_ERROR) | |
2328 | { | |
2329 | warning (_("Remote failure reply: %s"), rs->buf); | |
2330 | rs->buf[0] = 0; | |
2331 | } | |
2332 | } | |
2333 | ||
2334 | memset (seen, 0, sizeof (seen)); | |
2335 | ||
2336 | next = rs->buf; | |
2337 | while (*next) | |
2338 | { | |
2339 | enum packet_support is_supported; | |
2340 | char *p, *end, *name_end, *value; | |
2341 | ||
2342 | /* First separate out this item from the rest of the packet. If | |
2343 | there's another item after this, we overwrite the separator | |
2344 | (terminated strings are much easier to work with). */ | |
2345 | p = next; | |
2346 | end = strchr (p, ';'); | |
2347 | if (end == NULL) | |
2348 | { | |
2349 | end = p + strlen (p); | |
2350 | next = end; | |
2351 | } | |
2352 | else | |
2353 | { | |
89be2091 DJ |
2354 | *end = '\0'; |
2355 | next = end + 1; | |
2356 | ||
be2a5f71 DJ |
2357 | if (end == p) |
2358 | { | |
2359 | warning (_("empty item in \"qSupported\" response")); | |
2360 | continue; | |
2361 | } | |
be2a5f71 DJ |
2362 | } |
2363 | ||
2364 | name_end = strchr (p, '='); | |
2365 | if (name_end) | |
2366 | { | |
2367 | /* This is a name=value entry. */ | |
2368 | is_supported = PACKET_ENABLE; | |
2369 | value = name_end + 1; | |
2370 | *name_end = '\0'; | |
2371 | } | |
2372 | else | |
2373 | { | |
2374 | value = NULL; | |
2375 | switch (end[-1]) | |
2376 | { | |
2377 | case '+': | |
2378 | is_supported = PACKET_ENABLE; | |
2379 | break; | |
2380 | ||
2381 | case '-': | |
2382 | is_supported = PACKET_DISABLE; | |
2383 | break; | |
2384 | ||
2385 | case '?': | |
2386 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
2387 | break; | |
2388 | ||
2389 | default: | |
2390 | warning (_("unrecognized item \"%s\" in \"qSupported\" response"), p); | |
2391 | continue; | |
2392 | } | |
2393 | end[-1] = '\0'; | |
2394 | } | |
2395 | ||
2396 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
2397 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
2398 | { | |
2399 | const struct protocol_feature *feature; | |
2400 | ||
2401 | seen[i] = 1; | |
2402 | feature = &remote_protocol_features[i]; | |
2403 | feature->func (feature, is_supported, value); | |
2404 | break; | |
2405 | } | |
2406 | } | |
2407 | ||
2408 | /* If we increased the packet size, make sure to increase the global | |
2409 | buffer size also. We delay this until after parsing the entire | |
2410 | qSupported packet, because this is the same buffer we were | |
2411 | parsing. */ | |
2412 | if (rs->buf_size < rs->explicit_packet_size) | |
2413 | { | |
2414 | rs->buf_size = rs->explicit_packet_size; | |
2415 | rs->buf = xrealloc (rs->buf, rs->buf_size); | |
2416 | } | |
2417 | ||
2418 | /* Handle the defaults for unmentioned features. */ | |
2419 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
2420 | if (!seen[i]) | |
2421 | { | |
2422 | const struct protocol_feature *feature; | |
2423 | ||
2424 | feature = &remote_protocol_features[i]; | |
2425 | feature->func (feature, feature->default_support, NULL); | |
2426 | } | |
2427 | } | |
2428 | ||
2429 | ||
c906108c | 2430 | static void |
fba45db2 | 2431 | remote_open_1 (char *name, int from_tty, struct target_ops *target, |
92d1e331 | 2432 | int extended_p, int async_p) |
c906108c | 2433 | { |
d01949b6 | 2434 | struct remote_state *rs = get_remote_state (); |
c906108c | 2435 | if (name == 0) |
8a3fe4f8 | 2436 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 2437 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 2438 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 2439 | |
23860348 | 2440 | /* See FIXME above. */ |
92d1e331 DJ |
2441 | if (!async_p) |
2442 | wait_forever_enabled_p = 1; | |
6426a772 | 2443 | |
c906108c SS |
2444 | target_preopen (from_tty); |
2445 | ||
2446 | unpush_target (target); | |
2447 | ||
89be2091 DJ |
2448 | /* Make sure we send the passed signals list the next time we resume. */ |
2449 | xfree (last_pass_packet); | |
2450 | last_pass_packet = NULL; | |
2451 | ||
ad9a8f3f | 2452 | remote_fileio_reset (); |
1dd41f16 NS |
2453 | reopen_exec_file (); |
2454 | reread_symbols (); | |
2455 | ||
9db8d71f | 2456 | remote_desc = remote_serial_open (name); |
c906108c SS |
2457 | if (!remote_desc) |
2458 | perror_with_name (name); | |
2459 | ||
2460 | if (baud_rate != -1) | |
2461 | { | |
2cd58942 | 2462 | if (serial_setbaudrate (remote_desc, baud_rate)) |
c906108c | 2463 | { |
9b74d5d3 KB |
2464 | /* The requested speed could not be set. Error out to |
2465 | top level after closing remote_desc. Take care to | |
2466 | set remote_desc to NULL to avoid closing remote_desc | |
2467 | more than once. */ | |
2cd58942 | 2468 | serial_close (remote_desc); |
9b74d5d3 | 2469 | remote_desc = NULL; |
c906108c SS |
2470 | perror_with_name (name); |
2471 | } | |
2472 | } | |
2473 | ||
2cd58942 | 2474 | serial_raw (remote_desc); |
c906108c SS |
2475 | |
2476 | /* If there is something sitting in the buffer we might take it as a | |
2477 | response to a command, which would be bad. */ | |
2cd58942 | 2478 | serial_flush_input (remote_desc); |
c906108c SS |
2479 | |
2480 | if (from_tty) | |
2481 | { | |
2482 | puts_filtered ("Remote debugging using "); | |
2483 | puts_filtered (name); | |
2484 | puts_filtered ("\n"); | |
2485 | } | |
23860348 | 2486 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 2487 | |
be2a5f71 DJ |
2488 | /* Reset the target state; these things will be queried either by |
2489 | remote_query_supported or as they are needed. */ | |
d471ea57 | 2490 | init_all_packet_configs (); |
be2a5f71 | 2491 | rs->explicit_packet_size = 0; |
802188a7 | 2492 | |
c5aa993b | 2493 | general_thread = -2; |
cce74817 | 2494 | continue_thread = -2; |
c906108c | 2495 | |
9d1f7ab2 MS |
2496 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
2497 | use_threadinfo_query = 1; | |
2498 | use_threadextra_query = 1; | |
2499 | ||
be2a5f71 DJ |
2500 | /* The first packet we send to the target is the optional "supported |
2501 | packets" request. If the target can answer this, it will tell us | |
2502 | which later probes to skip. */ | |
2503 | remote_query_supported (); | |
2504 | ||
424163ea DJ |
2505 | /* Next, if the target can specify a description, read it. We do |
2506 | this before anything involving memory or registers. */ | |
2507 | target_find_description (); | |
2508 | ||
c906108c SS |
2509 | /* Without this, some commands which require an active target (such |
2510 | as kill) won't work. This variable serves (at least) double duty | |
2511 | as both the pid of the target process (if it has such), and as a | |
2512 | flag indicating that a target is active. These functions should | |
2513 | be split out into seperate variables, especially since GDB will | |
2514 | someday have a notion of debugging several processes. */ | |
2515 | ||
39f77062 | 2516 | inferior_ptid = pid_to_ptid (MAGIC_NULL_PID); |
92d1e331 DJ |
2517 | |
2518 | if (async_p) | |
2519 | { | |
23860348 | 2520 | /* With this target we start out by owning the terminal. */ |
92d1e331 DJ |
2521 | remote_async_terminal_ours_p = 1; |
2522 | ||
2523 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
2524 | assumed that the target is already ready and able to respond to | |
2525 | requests. Unfortunately remote_start_remote() eventually calls | |
2526 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets | |
2527 | around this. Eventually a mechanism that allows | |
2528 | wait_for_inferior() to expect/get timeouts will be | |
23860348 | 2529 | implemented. */ |
92d1e331 DJ |
2530 | wait_forever_enabled_p = 0; |
2531 | } | |
2532 | ||
23860348 | 2533 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 2534 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 2535 | |
36918e70 | 2536 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
2537 | target (we'd otherwise be in an inconsistent state) and then |
2538 | propogate the error on up the exception chain. This ensures that | |
2539 | the caller doesn't stumble along blindly assuming that the | |
2540 | function succeeded. The CLI doesn't have this problem but other | |
2541 | UI's, such as MI do. | |
36918e70 AC |
2542 | |
2543 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
2544 | this function should return an error indication letting the | |
ce2826aa | 2545 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
2546 | ``target remote'' is directly wired to this function making that |
2547 | impossible. On a positive note, the CLI side of this problem has | |
2548 | been fixed - the function set_cmd_context() makes it possible for | |
2549 | all the ``target ....'' commands to share a common callback | |
2550 | function. See cli-dump.c. */ | |
109c3e39 AC |
2551 | { |
2552 | struct gdb_exception ex | |
8621d6a9 DJ |
2553 | = catch_exception (uiout, remote_start_remote, &from_tty, |
2554 | RETURN_MASK_ALL); | |
109c3e39 AC |
2555 | if (ex.reason < 0) |
2556 | { | |
2557 | pop_target (); | |
2558 | if (async_p) | |
2559 | wait_forever_enabled_p = 1; | |
2560 | throw_exception (ex); | |
2561 | } | |
2562 | } | |
c906108c | 2563 | |
92d1e331 DJ |
2564 | if (async_p) |
2565 | wait_forever_enabled_p = 1; | |
6426a772 JM |
2566 | |
2567 | if (extended_p) | |
43ff13b4 | 2568 | { |
6240bebf | 2569 | /* Tell the remote that we are using the extended protocol. */ |
6426a772 | 2570 | putpkt ("!"); |
6d820c5c | 2571 | getpkt (&rs->buf, &rs->buf_size, 0); |
43ff13b4 | 2572 | } |
a77053c2 | 2573 | |
23860348 | 2574 | if (exec_bfd) /* No use without an exec file. */ |
9353355f | 2575 | remote_check_symbols (symfile_objfile); |
43ff13b4 JM |
2576 | } |
2577 | ||
c906108c SS |
2578 | /* This takes a program previously attached to and detaches it. After |
2579 | this is done, GDB can be used to debug some other program. We | |
2580 | better not have left any breakpoints in the target program or it'll | |
2581 | die when it hits one. */ | |
2582 | ||
2583 | static void | |
fba45db2 | 2584 | remote_detach (char *args, int from_tty) |
c906108c | 2585 | { |
d01949b6 | 2586 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2587 | |
2588 | if (args) | |
8a3fe4f8 | 2589 | error (_("Argument given to \"detach\" when remotely debugging.")); |
c906108c SS |
2590 | |
2591 | /* Tell the remote target to detach. */ | |
6d820c5c DJ |
2592 | strcpy (rs->buf, "D"); |
2593 | remote_send (&rs->buf, &rs->buf_size); | |
c906108c | 2594 | |
23860348 | 2595 | /* Unregister the file descriptor from the event loop. */ |
6ad8ae5c DJ |
2596 | if (target_is_async_p ()) |
2597 | serial_async (remote_desc, NULL, 0); | |
2598 | ||
cca728d0 | 2599 | target_mourn_inferior (); |
c906108c SS |
2600 | if (from_tty) |
2601 | puts_filtered ("Ending remote debugging.\n"); | |
2602 | } | |
2603 | ||
6ad8ae5c DJ |
2604 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
2605 | ||
43ff13b4 | 2606 | static void |
597320e7 | 2607 | remote_disconnect (struct target_ops *target, char *args, int from_tty) |
43ff13b4 | 2608 | { |
43ff13b4 | 2609 | if (args) |
8a3fe4f8 | 2610 | error (_("Argument given to \"detach\" when remotely debugging.")); |
43ff13b4 | 2611 | |
23860348 | 2612 | /* Unregister the file descriptor from the event loop. */ |
ed9a39eb | 2613 | if (target_is_async_p ()) |
2cd58942 | 2614 | serial_async (remote_desc, NULL, 0); |
43ff13b4 | 2615 | |
cca728d0 | 2616 | target_mourn_inferior (); |
43ff13b4 JM |
2617 | if (from_tty) |
2618 | puts_filtered ("Ending remote debugging.\n"); | |
2619 | } | |
2620 | ||
c906108c SS |
2621 | /* Convert hex digit A to a number. */ |
2622 | ||
30559e10 | 2623 | static int |
fba45db2 | 2624 | fromhex (int a) |
c906108c SS |
2625 | { |
2626 | if (a >= '0' && a <= '9') | |
2627 | return a - '0'; | |
2628 | else if (a >= 'a' && a <= 'f') | |
2629 | return a - 'a' + 10; | |
2630 | else if (a >= 'A' && a <= 'F') | |
2631 | return a - 'A' + 10; | |
c5aa993b | 2632 | else |
8a3fe4f8 | 2633 | error (_("Reply contains invalid hex digit %d"), a); |
c906108c SS |
2634 | } |
2635 | ||
30559e10 | 2636 | static int |
cfd77fa1 | 2637 | hex2bin (const char *hex, gdb_byte *bin, int count) |
30559e10 MS |
2638 | { |
2639 | int i; | |
2640 | ||
30559e10 MS |
2641 | for (i = 0; i < count; i++) |
2642 | { | |
2643 | if (hex[0] == 0 || hex[1] == 0) | |
2644 | { | |
2645 | /* Hex string is short, or of uneven length. | |
23860348 | 2646 | Return the count that has been converted so far. */ |
30559e10 MS |
2647 | return i; |
2648 | } | |
2649 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); | |
2650 | hex += 2; | |
2651 | } | |
2652 | return i; | |
2653 | } | |
2654 | ||
c906108c SS |
2655 | /* Convert number NIB to a hex digit. */ |
2656 | ||
2657 | static int | |
fba45db2 | 2658 | tohex (int nib) |
c906108c SS |
2659 | { |
2660 | if (nib < 10) | |
c5aa993b | 2661 | return '0' + nib; |
c906108c | 2662 | else |
c5aa993b | 2663 | return 'a' + nib - 10; |
c906108c | 2664 | } |
30559e10 MS |
2665 | |
2666 | static int | |
cfd77fa1 | 2667 | bin2hex (const gdb_byte *bin, char *hex, int count) |
30559e10 MS |
2668 | { |
2669 | int i; | |
23860348 | 2670 | /* May use a length, or a nul-terminated string as input. */ |
30559e10 | 2671 | if (count == 0) |
cfd77fa1 | 2672 | count = strlen ((char *) bin); |
30559e10 MS |
2673 | |
2674 | for (i = 0; i < count; i++) | |
2675 | { | |
2676 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
2677 | *hex++ = tohex (*bin++ & 0xf); | |
2678 | } | |
2679 | *hex = 0; | |
2680 | return i; | |
2681 | } | |
c906108c | 2682 | \f |
506fb367 DJ |
2683 | /* Check for the availability of vCont. This function should also check |
2684 | the response. */ | |
c906108c SS |
2685 | |
2686 | static void | |
6d820c5c | 2687 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 2688 | { |
2e9f7625 | 2689 | char *buf; |
6d820c5c | 2690 | |
2e9f7625 DJ |
2691 | strcpy (rs->buf, "vCont?"); |
2692 | putpkt (rs->buf); | |
6d820c5c | 2693 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2694 | buf = rs->buf; |
c906108c | 2695 | |
506fb367 DJ |
2696 | /* Make sure that the features we assume are supported. */ |
2697 | if (strncmp (buf, "vCont", 5) == 0) | |
2698 | { | |
2699 | char *p = &buf[5]; | |
2700 | int support_s, support_S, support_c, support_C; | |
2701 | ||
2702 | support_s = 0; | |
2703 | support_S = 0; | |
2704 | support_c = 0; | |
2705 | support_C = 0; | |
2706 | while (p && *p == ';') | |
2707 | { | |
2708 | p++; | |
2709 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2710 | support_s = 1; | |
2711 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2712 | support_S = 1; | |
2713 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2714 | support_c = 1; | |
2715 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2716 | support_C = 1; | |
2717 | ||
2718 | p = strchr (p, ';'); | |
2719 | } | |
c906108c | 2720 | |
506fb367 DJ |
2721 | /* If s, S, c, and C are not all supported, we can't use vCont. Clearing |
2722 | BUF will make packet_ok disable the packet. */ | |
2723 | if (!support_s || !support_S || !support_c || !support_C) | |
2724 | buf[0] = 0; | |
2725 | } | |
c906108c | 2726 | |
444abaca | 2727 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 2728 | } |
c906108c | 2729 | |
506fb367 DJ |
2730 | /* Resume the remote inferior by using a "vCont" packet. The thread |
2731 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
2732 | resumed thread should be single-stepped and/or signalled. If PTID's | |
2733 | PID is -1, then all threads are resumed; the thread to be stepped and/or | |
2734 | signalled is given in the global INFERIOR_PTID. This function returns | |
2735 | non-zero iff it resumes the inferior. | |
44eaed12 | 2736 | |
506fb367 DJ |
2737 | This function issues a strict subset of all possible vCont commands at the |
2738 | moment. */ | |
44eaed12 | 2739 | |
506fb367 DJ |
2740 | static int |
2741 | remote_vcont_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
2742 | { | |
2743 | struct remote_state *rs = get_remote_state (); | |
2744 | int pid = PIDGET (ptid); | |
2963ee1d | 2745 | char *buf = NULL, *outbuf; |
506fb367 | 2746 | struct cleanup *old_cleanup; |
44eaed12 | 2747 | |
444abaca | 2748 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 2749 | remote_vcont_probe (rs); |
44eaed12 | 2750 | |
444abaca | 2751 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_DISABLE) |
6d820c5c | 2752 | return 0; |
44eaed12 | 2753 | |
506fb367 DJ |
2754 | /* If we could generate a wider range of packets, we'd have to worry |
2755 | about overflowing BUF. Should there be a generic | |
2756 | "multi-part-packet" packet? */ | |
2757 | ||
2758 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) | |
c906108c | 2759 | { |
506fb367 DJ |
2760 | /* MAGIC_NULL_PTID means that we don't have any active threads, so we |
2761 | don't have any PID numbers the inferior will understand. Make sure | |
2762 | to only send forms that do not specify a PID. */ | |
2763 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d | 2764 | outbuf = xstrprintf ("vCont;S%02x", siggnal); |
506fb367 | 2765 | else if (step) |
2963ee1d | 2766 | outbuf = xstrprintf ("vCont;s"); |
506fb367 | 2767 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d | 2768 | outbuf = xstrprintf ("vCont;C%02x", siggnal); |
506fb367 | 2769 | else |
2963ee1d | 2770 | outbuf = xstrprintf ("vCont;c"); |
506fb367 DJ |
2771 | } |
2772 | else if (pid == -1) | |
2773 | { | |
2774 | /* Resume all threads, with preference for INFERIOR_PTID. */ | |
2775 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d DJ |
2776 | outbuf = xstrprintf ("vCont;S%02x:%x;c", siggnal, |
2777 | PIDGET (inferior_ptid)); | |
506fb367 | 2778 | else if (step) |
2963ee1d | 2779 | outbuf = xstrprintf ("vCont;s:%x;c", PIDGET (inferior_ptid)); |
506fb367 | 2780 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d DJ |
2781 | outbuf = xstrprintf ("vCont;C%02x:%x;c", siggnal, |
2782 | PIDGET (inferior_ptid)); | |
506fb367 | 2783 | else |
2963ee1d | 2784 | outbuf = xstrprintf ("vCont;c"); |
c906108c SS |
2785 | } |
2786 | else | |
506fb367 DJ |
2787 | { |
2788 | /* Scheduler locking; resume only PTID. */ | |
2789 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d | 2790 | outbuf = xstrprintf ("vCont;S%02x:%x", siggnal, pid); |
506fb367 | 2791 | else if (step) |
2963ee1d | 2792 | outbuf = xstrprintf ("vCont;s:%x", pid); |
506fb367 | 2793 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d | 2794 | outbuf = xstrprintf ("vCont;C%02x:%x", siggnal, pid); |
506fb367 | 2795 | else |
2963ee1d | 2796 | outbuf = xstrprintf ("vCont;c:%x", pid); |
506fb367 | 2797 | } |
c906108c | 2798 | |
ea9c271d | 2799 | gdb_assert (outbuf && strlen (outbuf) < get_remote_packet_size ()); |
6d820c5c | 2800 | old_cleanup = make_cleanup (xfree, outbuf); |
2963ee1d DJ |
2801 | |
2802 | putpkt (outbuf); | |
506fb367 DJ |
2803 | |
2804 | do_cleanups (old_cleanup); | |
2805 | ||
2806 | return 1; | |
c906108c | 2807 | } |
43ff13b4 | 2808 | |
506fb367 DJ |
2809 | /* Tell the remote machine to resume. */ |
2810 | ||
2811 | static enum target_signal last_sent_signal = TARGET_SIGNAL_0; | |
2812 | ||
2813 | static int last_sent_step; | |
2814 | ||
43ff13b4 | 2815 | static void |
506fb367 | 2816 | remote_resume (ptid_t ptid, int step, enum target_signal siggnal) |
43ff13b4 | 2817 | { |
d01949b6 | 2818 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 2819 | char *buf; |
39f77062 | 2820 | int pid = PIDGET (ptid); |
43ff13b4 | 2821 | |
43ff13b4 JM |
2822 | last_sent_signal = siggnal; |
2823 | last_sent_step = step; | |
2824 | ||
2825 | /* A hook for when we need to do something at the last moment before | |
2826 | resumption. */ | |
9a4105ab AC |
2827 | if (deprecated_target_resume_hook) |
2828 | (*deprecated_target_resume_hook) (); | |
43ff13b4 | 2829 | |
89be2091 DJ |
2830 | /* Update the inferior on signals to silently pass, if they've changed. */ |
2831 | remote_pass_signals (); | |
2832 | ||
506fb367 DJ |
2833 | /* The vCont packet doesn't need to specify threads via Hc. */ |
2834 | if (remote_vcont_resume (ptid, step, siggnal)) | |
2835 | return; | |
2836 | ||
2837 | /* All other supported resume packets do use Hc, so call set_thread. */ | |
2838 | if (pid == -1) | |
23860348 | 2839 | set_thread (0, 0); /* Run any thread. */ |
506fb367 | 2840 | else |
23860348 | 2841 | set_thread (pid, 0); /* Run this thread. */ |
506fb367 | 2842 | |
2e9f7625 | 2843 | buf = rs->buf; |
43ff13b4 JM |
2844 | if (siggnal != TARGET_SIGNAL_0) |
2845 | { | |
2846 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 2847 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 2848 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
2849 | buf[3] = '\0'; |
2850 | } | |
2851 | else | |
c5aa993b | 2852 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 2853 | |
44eaed12 | 2854 | putpkt (buf); |
506fb367 DJ |
2855 | } |
2856 | ||
23860348 | 2857 | /* Same as remote_resume, but with async support. */ |
506fb367 DJ |
2858 | static void |
2859 | remote_async_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
2860 | { | |
2861 | remote_resume (ptid, step, siggnal); | |
43ff13b4 | 2862 | |
2acceee2 JM |
2863 | /* We are about to start executing the inferior, let's register it |
2864 | with the event loop. NOTE: this is the one place where all the | |
2865 | execution commands end up. We could alternatively do this in each | |
23860348 | 2866 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
2867 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
2868 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 2869 | NOT asynchronously. */ |
362646f5 | 2870 | if (target_can_async_p ()) |
2acceee2 | 2871 | target_async (inferior_event_handler, 0); |
23860348 | 2872 | /* Tell the world that the target is now executing. */ |
2acceee2 JM |
2873 | /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set |
2874 | this? Instead, should the client of target just assume (for | |
2875 | async targets) that the target is going to start executing? Is | |
2876 | this information already found in the continuation block? */ | |
ed9a39eb | 2877 | if (target_is_async_p ()) |
2acceee2 | 2878 | target_executing = 1; |
43ff13b4 | 2879 | } |
c906108c | 2880 | \f |
43ff13b4 JM |
2881 | |
2882 | /* Set up the signal handler for SIGINT, while the target is | |
23860348 | 2883 | executing, ovewriting the 'regular' SIGINT signal handler. */ |
43ff13b4 | 2884 | static void |
fba45db2 | 2885 | initialize_sigint_signal_handler (void) |
43ff13b4 | 2886 | { |
c5aa993b | 2887 | sigint_remote_token = |
43ff13b4 JM |
2888 | create_async_signal_handler (async_remote_interrupt, NULL); |
2889 | signal (SIGINT, handle_remote_sigint); | |
2890 | } | |
2891 | ||
23860348 | 2892 | /* Signal handler for SIGINT, while the target is executing. */ |
43ff13b4 | 2893 | static void |
fba45db2 | 2894 | handle_remote_sigint (int sig) |
43ff13b4 JM |
2895 | { |
2896 | signal (sig, handle_remote_sigint_twice); | |
c5aa993b | 2897 | sigint_remote_twice_token = |
43ff13b4 JM |
2898 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
2899 | mark_async_signal_handler_wrapper (sigint_remote_token); | |
2900 | } | |
2901 | ||
2902 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
2903 | sent once. It will take effect the second time that the user sends | |
23860348 | 2904 | a ^C. */ |
43ff13b4 | 2905 | static void |
fba45db2 | 2906 | handle_remote_sigint_twice (int sig) |
43ff13b4 JM |
2907 | { |
2908 | signal (sig, handle_sigint); | |
c5aa993b | 2909 | sigint_remote_twice_token = |
2df3850c | 2910 | create_async_signal_handler (inferior_event_handler_wrapper, NULL); |
43ff13b4 JM |
2911 | mark_async_signal_handler_wrapper (sigint_remote_twice_token); |
2912 | } | |
2913 | ||
6426a772 | 2914 | /* Perform the real interruption of the target execution, in response |
23860348 | 2915 | to a ^C. */ |
c5aa993b | 2916 | static void |
fba45db2 | 2917 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
2918 | { |
2919 | if (remote_debug) | |
2920 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
2921 | ||
2922 | target_stop (); | |
2923 | } | |
2924 | ||
2925 | /* Perform interrupt, if the first attempt did not succeed. Just give | |
23860348 | 2926 | up on the target alltogether. */ |
2df3850c | 2927 | void |
fba45db2 | 2928 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 2929 | { |
2df3850c JM |
2930 | if (remote_debug) |
2931 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt_twice called\n"); | |
6426a772 | 2932 | /* Do something only if the target was not killed by the previous |
23860348 | 2933 | cntl-C. */ |
6426a772 JM |
2934 | if (target_executing) |
2935 | { | |
2936 | interrupt_query (); | |
2937 | signal (SIGINT, handle_remote_sigint); | |
2938 | } | |
43ff13b4 JM |
2939 | } |
2940 | ||
2941 | /* Reinstall the usual SIGINT handlers, after the target has | |
23860348 | 2942 | stopped. */ |
6426a772 JM |
2943 | static void |
2944 | cleanup_sigint_signal_handler (void *dummy) | |
43ff13b4 JM |
2945 | { |
2946 | signal (SIGINT, handle_sigint); | |
2947 | if (sigint_remote_twice_token) | |
d5d6fca5 | 2948 | delete_async_signal_handler (&sigint_remote_twice_token); |
43ff13b4 | 2949 | if (sigint_remote_token) |
d5d6fca5 | 2950 | delete_async_signal_handler (&sigint_remote_token); |
43ff13b4 JM |
2951 | } |
2952 | ||
c906108c SS |
2953 | /* Send ^C to target to halt it. Target will respond, and send us a |
2954 | packet. */ | |
507f3c78 | 2955 | static void (*ofunc) (int); |
c906108c | 2956 | |
7a292a7a SS |
2957 | /* The command line interface's stop routine. This function is installed |
2958 | as a signal handler for SIGINT. The first time a user requests a | |
2959 | stop, we call remote_stop to send a break or ^C. If there is no | |
2960 | response from the target (it didn't stop when the user requested it), | |
23860348 | 2961 | we ask the user if he'd like to detach from the target. */ |
c906108c | 2962 | static void |
fba45db2 | 2963 | remote_interrupt (int signo) |
c906108c | 2964 | { |
23860348 | 2965 | /* If this doesn't work, try more severe steps. */ |
7a292a7a SS |
2966 | signal (signo, remote_interrupt_twice); |
2967 | ||
2968 | if (remote_debug) | |
0f71a2f6 | 2969 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); |
7a292a7a SS |
2970 | |
2971 | target_stop (); | |
2972 | } | |
2973 | ||
2974 | /* The user typed ^C twice. */ | |
2975 | ||
2976 | static void | |
fba45db2 | 2977 | remote_interrupt_twice (int signo) |
7a292a7a SS |
2978 | { |
2979 | signal (signo, ofunc); | |
2980 | interrupt_query (); | |
c906108c SS |
2981 | signal (signo, remote_interrupt); |
2982 | } | |
7a292a7a SS |
2983 | |
2984 | /* This is the generic stop called via the target vector. When a target | |
2985 | interrupt is requested, either by the command line or the GUI, we | |
23860348 | 2986 | will eventually end up here. */ |
c906108c | 2987 | static void |
fba45db2 | 2988 | remote_stop (void) |
c906108c | 2989 | { |
7a292a7a SS |
2990 | /* Send a break or a ^C, depending on user preference. */ |
2991 | if (remote_debug) | |
0f71a2f6 | 2992 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 2993 | |
7a292a7a | 2994 | if (remote_break) |
2cd58942 | 2995 | serial_send_break (remote_desc); |
c906108c | 2996 | else |
2cd58942 | 2997 | serial_write (remote_desc, "\003", 1); |
c906108c SS |
2998 | } |
2999 | ||
3000 | /* Ask the user what to do when an interrupt is received. */ | |
3001 | ||
3002 | static void | |
fba45db2 | 3003 | interrupt_query (void) |
c906108c SS |
3004 | { |
3005 | target_terminal_ours (); | |
3006 | ||
3007 | if (query ("Interrupted while waiting for the program.\n\ | |
3008 | Give up (and stop debugging it)? ")) | |
3009 | { | |
3010 | target_mourn_inferior (); | |
315a522e | 3011 | deprecated_throw_reason (RETURN_QUIT); |
c906108c SS |
3012 | } |
3013 | ||
3014 | target_terminal_inferior (); | |
3015 | } | |
3016 | ||
6426a772 JM |
3017 | /* Enable/disable target terminal ownership. Most targets can use |
3018 | terminal groups to control terminal ownership. Remote targets are | |
3019 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 3020 | is required. */ |
6426a772 JM |
3021 | |
3022 | static void | |
3023 | remote_async_terminal_inferior (void) | |
3024 | { | |
3025 | /* FIXME: cagney/1999-09-27: Shouldn't need to test for | |
3026 | sync_execution here. This function should only be called when | |
3027 | GDB is resuming the inferior in the forground. A background | |
3028 | resume (``run&'') should leave GDB in control of the terminal and | |
23860348 | 3029 | consequently should not call this code. */ |
6426a772 JM |
3030 | if (!sync_execution) |
3031 | return; | |
3032 | /* FIXME: cagney/1999-09-27: Closely related to the above. Make | |
3033 | calls target_terminal_*() idenpotent. The event-loop GDB talking | |
3034 | to an asynchronous target with a synchronous command calls this | |
3035 | function from both event-top.c and infrun.c/infcmd.c. Once GDB | |
3036 | stops trying to transfer the terminal to the target when it | |
3037 | shouldn't this guard can go away. */ | |
3038 | if (!remote_async_terminal_ours_p) | |
3039 | return; | |
3040 | delete_file_handler (input_fd); | |
3041 | remote_async_terminal_ours_p = 0; | |
3042 | initialize_sigint_signal_handler (); | |
3043 | /* NOTE: At this point we could also register our selves as the | |
3044 | recipient of all input. Any characters typed could then be | |
23860348 | 3045 | passed on down to the target. */ |
6426a772 JM |
3046 | } |
3047 | ||
3048 | static void | |
3049 | remote_async_terminal_ours (void) | |
3050 | { | |
23860348 | 3051 | /* See FIXME in remote_async_terminal_inferior. */ |
6426a772 JM |
3052 | if (!sync_execution) |
3053 | return; | |
23860348 | 3054 | /* See FIXME in remote_async_terminal_inferior. */ |
6426a772 JM |
3055 | if (remote_async_terminal_ours_p) |
3056 | return; | |
3057 | cleanup_sigint_signal_handler (NULL); | |
3058 | add_file_handler (input_fd, stdin_event_handler, 0); | |
3059 | remote_async_terminal_ours_p = 1; | |
3060 | } | |
3061 | ||
c906108c SS |
3062 | /* If nonzero, ignore the next kill. */ |
3063 | ||
3064 | int kill_kludge; | |
3065 | ||
3066 | void | |
917317f4 | 3067 | remote_console_output (char *msg) |
c906108c SS |
3068 | { |
3069 | char *p; | |
3070 | ||
c5aa993b | 3071 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
3072 | { |
3073 | char tb[2]; | |
3074 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3075 | tb[0] = c; | |
3076 | tb[1] = 0; | |
43ff13b4 | 3077 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 3078 | } |
917317f4 | 3079 | gdb_flush (gdb_stdtarg); |
c906108c SS |
3080 | } |
3081 | ||
0f71a2f6 JM |
3082 | /* Wait until the remote machine stops, then return, |
3083 | storing status in STATUS just as `wait' would. | |
802188a7 | 3084 | Returns "pid", which in the case of a multi-threaded |
0f71a2f6 | 3085 | remote OS, is the thread-id. */ |
c906108c | 3086 | |
39f77062 KB |
3087 | static ptid_t |
3088 | remote_wait (ptid_t ptid, struct target_waitstatus *status) | |
c906108c | 3089 | { |
d01949b6 | 3090 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 3091 | struct remote_arch_state *rsa = get_remote_arch_state (); |
b2dd6311 | 3092 | ULONGEST thread_num = -1; |
3c3bea1c | 3093 | ULONGEST addr; |
c906108c SS |
3094 | |
3095 | status->kind = TARGET_WAITKIND_EXITED; | |
3096 | status->value.integer = 0; | |
3097 | ||
3098 | while (1) | |
3099 | { | |
2e9f7625 | 3100 | char *buf, *p; |
c906108c | 3101 | |
c906108c | 3102 | ofunc = signal (SIGINT, remote_interrupt); |
6d820c5c | 3103 | getpkt (&rs->buf, &rs->buf_size, 1); |
c906108c SS |
3104 | signal (SIGINT, ofunc); |
3105 | ||
2e9f7625 DJ |
3106 | buf = rs->buf; |
3107 | ||
c906108c | 3108 | /* This is a hook for when we need to do something (perhaps the |
c5aa993b | 3109 | collection of trace data) every time the target stops. */ |
9a4105ab AC |
3110 | if (deprecated_target_wait_loop_hook) |
3111 | (*deprecated_target_wait_loop_hook) (); | |
c906108c | 3112 | |
3c3bea1c GS |
3113 | remote_stopped_by_watchpoint_p = 0; |
3114 | ||
c906108c SS |
3115 | switch (buf[0]) |
3116 | { | |
23860348 | 3117 | case 'E': /* Error of some sort. */ |
8a3fe4f8 | 3118 | warning (_("Remote failure reply: %s"), buf); |
c906108c | 3119 | continue; |
23860348 | 3120 | case 'F': /* File-I/O request. */ |
449092f6 CV |
3121 | remote_fileio_request (buf); |
3122 | continue; | |
23860348 | 3123 | case 'T': /* Status with PC, SP, FP, ... */ |
c906108c | 3124 | { |
cfd77fa1 | 3125 | gdb_byte regs[MAX_REGISTER_SIZE]; |
c906108c | 3126 | |
23860348 | 3127 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
c906108c | 3128 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where |
c5aa993b JM |
3129 | ss = signal number |
3130 | n... = register number | |
3131 | r... = register contents | |
3132 | */ | |
c906108c SS |
3133 | p = &buf[3]; /* after Txx */ |
3134 | ||
3135 | while (*p) | |
3136 | { | |
cfd77fa1 | 3137 | char *p1; |
c906108c | 3138 | char *p_temp; |
97345198 | 3139 | int fieldsize; |
3c3bea1c GS |
3140 | LONGEST pnum = 0; |
3141 | ||
23860348 MS |
3142 | /* If the packet contains a register number save it in |
3143 | pnum and set p1 to point to the character following | |
3144 | it. Otherwise p1 points to p. */ | |
c906108c | 3145 | |
23860348 MS |
3146 | /* If this packet is an awatch packet, don't parse the |
3147 | 'a' as a register number. */ | |
3c3bea1c GS |
3148 | |
3149 | if (strncmp (p, "awatch", strlen("awatch")) != 0) | |
3150 | { | |
3151 | /* Read the ``P'' register number. */ | |
3152 | pnum = strtol (p, &p_temp, 16); | |
cfd77fa1 | 3153 | p1 = p_temp; |
3c3bea1c | 3154 | } |
802188a7 | 3155 | else |
3c3bea1c | 3156 | p1 = p; |
c906108c | 3157 | |
23860348 | 3158 | if (p1 == p) /* No register number present here. */ |
c906108c | 3159 | { |
cfd77fa1 | 3160 | p1 = strchr (p, ':'); |
c906108c | 3161 | if (p1 == NULL) |
670aa98f | 3162 | error (_("Malformed packet(a) (missing colon): %s\n\ |
8a3fe4f8 | 3163 | Packet: '%s'\n"), |
670aa98f | 3164 | p, buf); |
3c3bea1c | 3165 | if (strncmp (p, "thread", p1 - p) == 0) |
c906108c SS |
3166 | { |
3167 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
3168 | record_currthread (thread_num); | |
cfd77fa1 | 3169 | p = p_temp; |
c906108c | 3170 | } |
3c3bea1c GS |
3171 | else if ((strncmp (p, "watch", p1 - p) == 0) |
3172 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
3173 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
3174 | { | |
3175 | remote_stopped_by_watchpoint_p = 1; | |
3176 | p = unpack_varlen_hex (++p1, &addr); | |
3177 | remote_watch_data_address = (CORE_ADDR)addr; | |
3178 | } | |
3179 | else | |
3180 | { | |
3181 | /* Silently skip unknown optional info. */ | |
3182 | p_temp = strchr (p1 + 1, ';'); | |
3183 | if (p_temp) | |
cfd77fa1 | 3184 | p = p_temp; |
3c3bea1c | 3185 | } |
c906108c SS |
3186 | } |
3187 | else | |
3188 | { | |
ea9c271d | 3189 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); |
c906108c SS |
3190 | p = p1; |
3191 | ||
3192 | if (*p++ != ':') | |
8a3fe4f8 AC |
3193 | error (_("Malformed packet(b) (missing colon): %s\n\ |
3194 | Packet: '%s'\n"), | |
3fcb8548 | 3195 | p, buf); |
c906108c | 3196 | |
ad10f812 | 3197 | if (reg == NULL) |
8a3fe4f8 AC |
3198 | error (_("Remote sent bad register number %s: %s\n\ |
3199 | Packet: '%s'\n"), | |
3fcb8548 | 3200 | phex_nz (pnum, 0), p, buf); |
c906108c | 3201 | |
cfd77fa1 | 3202 | fieldsize = hex2bin (p, regs, |
2bc416ba | 3203 | register_size (current_gdbarch, |
23860348 | 3204 | reg->regnum)); |
97345198 | 3205 | p += 2 * fieldsize; |
2bc416ba | 3206 | if (fieldsize < register_size (current_gdbarch, |
23860348 | 3207 | reg->regnum)) |
8a3fe4f8 | 3208 | warning (_("Remote reply is too short: %s"), buf); |
2bc416ba | 3209 | regcache_raw_supply (current_regcache, |
23860348 | 3210 | reg->regnum, regs); |
c906108c SS |
3211 | } |
3212 | ||
3213 | if (*p++ != ';') | |
2bc416ba | 3214 | error (_("Remote register badly formatted: %s\nhere: %s"), |
23860348 | 3215 | buf, p); |
c906108c SS |
3216 | } |
3217 | } | |
3218 | /* fall through */ | |
23860348 | 3219 | case 'S': /* Old style status, just signal only. */ |
c906108c SS |
3220 | status->kind = TARGET_WAITKIND_STOPPED; |
3221 | status->value.sig = (enum target_signal) | |
3222 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3223 | ||
0f71a2f6 JM |
3224 | if (buf[3] == 'p') |
3225 | { | |
0f71a2f6 JM |
3226 | thread_num = strtol ((const char *) &buf[4], NULL, 16); |
3227 | record_currthread (thread_num); | |
3228 | } | |
c906108c | 3229 | goto got_status; |
23860348 | 3230 | case 'W': /* Target exited. */ |
c906108c SS |
3231 | { |
3232 | /* The remote process exited. */ | |
3233 | status->kind = TARGET_WAITKIND_EXITED; | |
3234 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
3235 | goto got_status; | |
3236 | } | |
3237 | case 'X': | |
3238 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
3239 | status->value.sig = (enum target_signal) | |
3240 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3241 | kill_kludge = 1; | |
3242 | ||
3243 | goto got_status; | |
23860348 | 3244 | case 'O': /* Console output. */ |
c906108c SS |
3245 | remote_console_output (buf + 1); |
3246 | continue; | |
3247 | case '\0': | |
3248 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3249 | { | |
3250 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3251 | the remote system doesn't support it. */ |
c906108c SS |
3252 | target_terminal_ours_for_output (); |
3253 | printf_filtered | |
3254 | ("Can't send signals to this remote system. %s not sent.\n", | |
3255 | target_signal_to_name (last_sent_signal)); | |
3256 | last_sent_signal = TARGET_SIGNAL_0; | |
3257 | target_terminal_inferior (); | |
3258 | ||
3259 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3260 | putpkt ((char *) buf); | |
3261 | continue; | |
3262 | } | |
3263 | /* else fallthrough */ | |
3264 | default: | |
8a3fe4f8 | 3265 | warning (_("Invalid remote reply: %s"), buf); |
c906108c SS |
3266 | continue; |
3267 | } | |
3268 | } | |
c5aa993b | 3269 | got_status: |
c906108c SS |
3270 | if (thread_num != -1) |
3271 | { | |
39f77062 | 3272 | return pid_to_ptid (thread_num); |
c906108c | 3273 | } |
39f77062 | 3274 | return inferior_ptid; |
c906108c SS |
3275 | } |
3276 | ||
23860348 | 3277 | /* Async version of remote_wait. */ |
39f77062 KB |
3278 | static ptid_t |
3279 | remote_async_wait (ptid_t ptid, struct target_waitstatus *status) | |
43ff13b4 | 3280 | { |
d01949b6 | 3281 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 3282 | struct remote_arch_state *rsa = get_remote_arch_state (); |
b2dd6311 | 3283 | ULONGEST thread_num = -1; |
3c3bea1c | 3284 | ULONGEST addr; |
43ff13b4 JM |
3285 | |
3286 | status->kind = TARGET_WAITKIND_EXITED; | |
3287 | status->value.integer = 0; | |
3288 | ||
3c3bea1c GS |
3289 | remote_stopped_by_watchpoint_p = 0; |
3290 | ||
43ff13b4 JM |
3291 | while (1) |
3292 | { | |
2e9f7625 | 3293 | char *buf, *p; |
c5aa993b | 3294 | |
ed9a39eb | 3295 | if (!target_is_async_p ()) |
43ff13b4 | 3296 | ofunc = signal (SIGINT, remote_interrupt); |
6426a772 JM |
3297 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
3298 | _never_ wait for ever -> test on target_is_async_p(). | |
3299 | However, before we do that we need to ensure that the caller | |
23860348 | 3300 | knows how to take the target into/out of async mode. */ |
6d820c5c | 3301 | getpkt (&rs->buf, &rs->buf_size, wait_forever_enabled_p); |
ed9a39eb | 3302 | if (!target_is_async_p ()) |
43ff13b4 JM |
3303 | signal (SIGINT, ofunc); |
3304 | ||
2e9f7625 DJ |
3305 | buf = rs->buf; |
3306 | ||
43ff13b4 | 3307 | /* This is a hook for when we need to do something (perhaps the |
c5aa993b | 3308 | collection of trace data) every time the target stops. */ |
9a4105ab AC |
3309 | if (deprecated_target_wait_loop_hook) |
3310 | (*deprecated_target_wait_loop_hook) (); | |
43ff13b4 JM |
3311 | |
3312 | switch (buf[0]) | |
3313 | { | |
23860348 | 3314 | case 'E': /* Error of some sort. */ |
8a3fe4f8 | 3315 | warning (_("Remote failure reply: %s"), buf); |
43ff13b4 | 3316 | continue; |
23860348 | 3317 | case 'F': /* File-I/O request. */ |
449092f6 CV |
3318 | remote_fileio_request (buf); |
3319 | continue; | |
23860348 | 3320 | case 'T': /* Status with PC, SP, FP, ... */ |
43ff13b4 | 3321 | { |
cfd77fa1 | 3322 | gdb_byte regs[MAX_REGISTER_SIZE]; |
43ff13b4 | 3323 | |
23860348 | 3324 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
43ff13b4 | 3325 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where |
c5aa993b JM |
3326 | ss = signal number |
3327 | n... = register number | |
3328 | r... = register contents | |
3329 | */ | |
43ff13b4 JM |
3330 | p = &buf[3]; /* after Txx */ |
3331 | ||
3332 | while (*p) | |
3333 | { | |
cfd77fa1 | 3334 | char *p1; |
43ff13b4 | 3335 | char *p_temp; |
6c3f2dbf | 3336 | int fieldsize; |
3c3bea1c | 3337 | long pnum = 0; |
43ff13b4 | 3338 | |
23860348 MS |
3339 | /* If the packet contains a register number, save it |
3340 | in pnum and set p1 to point to the character | |
3341 | following it. Otherwise p1 points to p. */ | |
3c3bea1c GS |
3342 | |
3343 | /* If this packet is an awatch packet, don't parse the 'a' | |
3344 | as a register number. */ | |
802188a7 | 3345 | |
3c3bea1c GS |
3346 | if (!strncmp (p, "awatch", strlen ("awatch")) != 0) |
3347 | { | |
3348 | /* Read the register number. */ | |
3349 | pnum = strtol (p, &p_temp, 16); | |
cfd77fa1 | 3350 | p1 = p_temp; |
3c3bea1c | 3351 | } |
802188a7 | 3352 | else |
3c3bea1c | 3353 | p1 = p; |
43ff13b4 | 3354 | |
23860348 | 3355 | if (p1 == p) /* No register number present here. */ |
43ff13b4 | 3356 | { |
cfd77fa1 | 3357 | p1 = strchr (p, ':'); |
43ff13b4 | 3358 | if (p1 == NULL) |
8a3fe4f8 AC |
3359 | error (_("Malformed packet(a) (missing colon): %s\n\ |
3360 | Packet: '%s'\n"), | |
3fcb8548 | 3361 | p, buf); |
3c3bea1c | 3362 | if (strncmp (p, "thread", p1 - p) == 0) |
43ff13b4 JM |
3363 | { |
3364 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
3365 | record_currthread (thread_num); | |
cfd77fa1 | 3366 | p = p_temp; |
43ff13b4 | 3367 | } |
3c3bea1c GS |
3368 | else if ((strncmp (p, "watch", p1 - p) == 0) |
3369 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
3370 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
3371 | { | |
3372 | remote_stopped_by_watchpoint_p = 1; | |
3373 | p = unpack_varlen_hex (++p1, &addr); | |
3374 | remote_watch_data_address = (CORE_ADDR)addr; | |
3375 | } | |
3376 | else | |
3377 | { | |
3378 | /* Silently skip unknown optional info. */ | |
cfd77fa1 | 3379 | p_temp = strchr (p1 + 1, ';'); |
3c3bea1c GS |
3380 | if (p_temp) |
3381 | p = p_temp; | |
3382 | } | |
43ff13b4 | 3383 | } |
802188a7 | 3384 | |
43ff13b4 JM |
3385 | else |
3386 | { | |
ea9c271d | 3387 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); |
43ff13b4 | 3388 | p = p1; |
43ff13b4 | 3389 | if (*p++ != ':') |
8a3fe4f8 AC |
3390 | error (_("Malformed packet(b) (missing colon): %s\n\ |
3391 | Packet: '%s'\n"), | |
3fcb8548 | 3392 | p, buf); |
43ff13b4 | 3393 | |
ad10f812 | 3394 | if (reg == NULL) |
8a3fe4f8 AC |
3395 | error (_("Remote sent bad register number %ld: %s\n\ |
3396 | Packet: '%s'\n"), | |
3fcb8548 | 3397 | pnum, p, buf); |
43ff13b4 | 3398 | |
cfd77fa1 | 3399 | fieldsize = hex2bin (p, regs, |
2bc416ba | 3400 | register_size (current_gdbarch, |
23860348 | 3401 | reg->regnum)); |
6c3f2dbf | 3402 | p += 2 * fieldsize; |
2bc416ba | 3403 | if (fieldsize < register_size (current_gdbarch, |
23860348 | 3404 | reg->regnum)) |
8a3fe4f8 | 3405 | warning (_("Remote reply is too short: %s"), buf); |
23a6d369 | 3406 | regcache_raw_supply (current_regcache, reg->regnum, regs); |
43ff13b4 JM |
3407 | } |
3408 | ||
3409 | if (*p++ != ';') | |
8a3fe4f8 | 3410 | error (_("Remote register badly formatted: %s\nhere: %s"), |
0a2cfde4 | 3411 | buf, p); |
43ff13b4 JM |
3412 | } |
3413 | } | |
3414 | /* fall through */ | |
23860348 | 3415 | case 'S': /* Old style status, just signal only. */ |
43ff13b4 JM |
3416 | status->kind = TARGET_WAITKIND_STOPPED; |
3417 | status->value.sig = (enum target_signal) | |
3418 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3419 | ||
3420 | if (buf[3] == 'p') | |
3421 | { | |
43ff13b4 JM |
3422 | thread_num = strtol ((const char *) &buf[4], NULL, 16); |
3423 | record_currthread (thread_num); | |
3424 | } | |
43ff13b4 | 3425 | goto got_status; |
23860348 | 3426 | case 'W': /* Target exited. */ |
43ff13b4 JM |
3427 | { |
3428 | /* The remote process exited. */ | |
3429 | status->kind = TARGET_WAITKIND_EXITED; | |
3430 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
3431 | goto got_status; | |
3432 | } | |
3433 | case 'X': | |
3434 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
3435 | status->value.sig = (enum target_signal) | |
3436 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3437 | kill_kludge = 1; | |
3438 | ||
3439 | goto got_status; | |
23860348 | 3440 | case 'O': /* Console output. */ |
43ff13b4 | 3441 | remote_console_output (buf + 1); |
c4093a6a | 3442 | /* Return immediately to the event loop. The event loop will |
23860348 | 3443 | still be waiting on the inferior afterwards. */ |
c4093a6a JM |
3444 | status->kind = TARGET_WAITKIND_IGNORE; |
3445 | goto got_status; | |
43ff13b4 JM |
3446 | case '\0': |
3447 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3448 | { | |
3449 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3450 | the remote system doesn't support it. */ |
43ff13b4 JM |
3451 | target_terminal_ours_for_output (); |
3452 | printf_filtered | |
3453 | ("Can't send signals to this remote system. %s not sent.\n", | |
3454 | target_signal_to_name (last_sent_signal)); | |
3455 | last_sent_signal = TARGET_SIGNAL_0; | |
3456 | target_terminal_inferior (); | |
3457 | ||
3458 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3459 | putpkt ((char *) buf); | |
3460 | continue; | |
3461 | } | |
3462 | /* else fallthrough */ | |
3463 | default: | |
8a3fe4f8 | 3464 | warning (_("Invalid remote reply: %s"), buf); |
43ff13b4 JM |
3465 | continue; |
3466 | } | |
3467 | } | |
c5aa993b | 3468 | got_status: |
43ff13b4 JM |
3469 | if (thread_num != -1) |
3470 | { | |
39f77062 | 3471 | return pid_to_ptid (thread_num); |
43ff13b4 | 3472 | } |
39f77062 | 3473 | return inferior_ptid; |
43ff13b4 JM |
3474 | } |
3475 | ||
74ca34ce | 3476 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 3477 | |
b96ec7ac | 3478 | static int |
74ca34ce | 3479 | fetch_register_using_p (struct packet_reg *reg) |
b96ec7ac AC |
3480 | { |
3481 | struct remote_state *rs = get_remote_state (); | |
2e9f7625 | 3482 | char *buf, *p; |
b96ec7ac AC |
3483 | char regp[MAX_REGISTER_SIZE]; |
3484 | int i; | |
3485 | ||
74ca34ce DJ |
3486 | if (remote_protocol_packets[PACKET_p].support == PACKET_DISABLE) |
3487 | return 0; | |
3488 | ||
3489 | if (reg->pnum == -1) | |
3490 | return 0; | |
3491 | ||
2e9f7625 | 3492 | p = rs->buf; |
fcad0fa4 | 3493 | *p++ = 'p'; |
74ca34ce | 3494 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 3495 | *p++ = '\0'; |
6d820c5c | 3496 | remote_send (&rs->buf, &rs->buf_size); |
3f9a994c | 3497 | |
2e9f7625 DJ |
3498 | buf = rs->buf; |
3499 | ||
74ca34ce DJ |
3500 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_p])) |
3501 | { | |
3502 | case PACKET_OK: | |
3503 | break; | |
3504 | case PACKET_UNKNOWN: | |
3505 | return 0; | |
3506 | case PACKET_ERROR: | |
3507 | error (_("Could not fetch register \"%s\""), | |
3508 | gdbarch_register_name (current_gdbarch, reg->regnum)); | |
3509 | } | |
3f9a994c JB |
3510 | |
3511 | /* If this register is unfetchable, tell the regcache. */ | |
3512 | if (buf[0] == 'x') | |
8480adf2 | 3513 | { |
74ca34ce DJ |
3514 | regcache_raw_supply (current_regcache, reg->regnum, NULL); |
3515 | set_register_cached (reg->regnum, -1); | |
8480adf2 | 3516 | return 1; |
b96ec7ac | 3517 | } |
b96ec7ac | 3518 | |
3f9a994c JB |
3519 | /* Otherwise, parse and supply the value. */ |
3520 | p = buf; | |
3521 | i = 0; | |
3522 | while (p[0] != 0) | |
3523 | { | |
3524 | if (p[1] == 0) | |
74ca34ce | 3525 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
3526 | |
3527 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3528 | p += 2; | |
3529 | } | |
74ca34ce | 3530 | regcache_raw_supply (current_regcache, reg->regnum, regp); |
3f9a994c | 3531 | return 1; |
b96ec7ac AC |
3532 | } |
3533 | ||
74ca34ce DJ |
3534 | /* Fetch the registers included in the target's 'g' packet. */ |
3535 | ||
29709017 DJ |
3536 | static int |
3537 | send_g_packet (void) | |
c906108c | 3538 | { |
d01949b6 | 3539 | struct remote_state *rs = get_remote_state (); |
74ca34ce | 3540 | int i, buf_len; |
c906108c | 3541 | char *p; |
74ca34ce | 3542 | char *regs; |
c906108c | 3543 | |
74ca34ce DJ |
3544 | sprintf (rs->buf, "g"); |
3545 | remote_send (&rs->buf, &rs->buf_size); | |
c906108c | 3546 | |
29709017 DJ |
3547 | /* We can get out of synch in various cases. If the first character |
3548 | in the buffer is not a hex character, assume that has happened | |
3549 | and try to fetch another packet to read. */ | |
3550 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
3551 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
3552 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
3553 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
3554 | { | |
3555 | if (remote_debug) | |
3556 | fprintf_unfiltered (gdb_stdlog, | |
3557 | "Bad register packet; fetching a new packet\n"); | |
3558 | getpkt (&rs->buf, &rs->buf_size, 0); | |
3559 | } | |
3560 | ||
74ca34ce DJ |
3561 | buf_len = strlen (rs->buf); |
3562 | ||
3563 | /* Sanity check the received packet. */ | |
3564 | if (buf_len % 2 != 0) | |
3565 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf); | |
29709017 DJ |
3566 | |
3567 | return buf_len / 2; | |
3568 | } | |
3569 | ||
3570 | static void | |
3571 | process_g_packet (void) | |
3572 | { | |
3573 | struct remote_state *rs = get_remote_state (); | |
3574 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
3575 | int i, buf_len; | |
3576 | char *p; | |
3577 | char *regs; | |
3578 | ||
3579 | buf_len = strlen (rs->buf); | |
3580 | ||
3581 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce DJ |
3582 | if (REGISTER_BYTES_OK_P () && !REGISTER_BYTES_OK (buf_len / 2)) |
3583 | error (_("Remote 'g' packet reply is wrong length: %s"), rs->buf); | |
3584 | if (buf_len > 2 * rsa->sizeof_g_packet) | |
3585 | error (_("Remote 'g' packet reply is too long: %s"), rs->buf); | |
3586 | ||
3587 | /* Save the size of the packet sent to us by the target. It is used | |
3588 | as a heuristic when determining the max size of packets that the | |
3589 | target can safely receive. */ | |
3590 | if (rsa->actual_register_packet_size == 0) | |
3591 | rsa->actual_register_packet_size = buf_len; | |
3592 | ||
3593 | /* If this is smaller than we guessed the 'g' packet would be, | |
3594 | update our records. A 'g' reply that doesn't include a register's | |
3595 | value implies either that the register is not available, or that | |
3596 | the 'p' packet must be used. */ | |
3597 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 3598 | { |
74ca34ce DJ |
3599 | rsa->sizeof_g_packet = buf_len / 2; |
3600 | ||
3601 | for (i = 0; i < NUM_REGS; i++) | |
b96ec7ac | 3602 | { |
74ca34ce DJ |
3603 | if (rsa->regs[i].pnum == -1) |
3604 | continue; | |
3605 | ||
3606 | if (rsa->regs[i].offset >= rsa->sizeof_g_packet) | |
3607 | rsa->regs[i].in_g_packet = 0; | |
b96ec7ac | 3608 | else |
74ca34ce | 3609 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 3610 | } |
74ca34ce | 3611 | } |
b323314b | 3612 | |
74ca34ce | 3613 | regs = alloca (rsa->sizeof_g_packet); |
c906108c SS |
3614 | |
3615 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 3616 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 3617 | |
c906108c SS |
3618 | /* Reply describes registers byte by byte, each byte encoded as two |
3619 | hex characters. Suck them all up, then supply them to the | |
3620 | register cacheing/storage mechanism. */ | |
3621 | ||
74ca34ce | 3622 | p = rs->buf; |
ea9c271d | 3623 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 3624 | { |
74ca34ce DJ |
3625 | if (p[0] == 0 || p[1] == 0) |
3626 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
3627 | internal_error (__FILE__, __LINE__, | |
3628 | "unexpected end of 'g' packet reply"); | |
3629 | ||
c906108c | 3630 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 3631 | regs[i] = 0; /* 'x' */ |
c906108c SS |
3632 | else |
3633 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3634 | p += 2; | |
3635 | } | |
3636 | ||
ad10f812 | 3637 | { |
b323314b | 3638 | int i; |
74ca34ce | 3639 | for (i = 0; i < NUM_REGS; i++) |
ad10f812 | 3640 | { |
ea9c271d | 3641 | struct packet_reg *r = &rsa->regs[i]; |
b323314b AC |
3642 | if (r->in_g_packet) |
3643 | { | |
74ca34ce DJ |
3644 | if (r->offset * 2 >= strlen (rs->buf)) |
3645 | /* This shouldn't happen - we adjusted in_g_packet above. */ | |
3646 | internal_error (__FILE__, __LINE__, | |
3647 | "unexpected end of 'g' packet reply"); | |
3648 | else if (rs->buf[r->offset * 2] == 'x') | |
8ccc1287 | 3649 | { |
74ca34ce | 3650 | gdb_assert (r->offset * 2 < strlen (rs->buf)); |
8ccc1287 AC |
3651 | /* The register isn't available, mark it as such (at |
3652 | the same time setting the value to zero). */ | |
3653 | regcache_raw_supply (current_regcache, r->regnum, NULL); | |
3654 | set_register_cached (i, -1); | |
3655 | } | |
3656 | else | |
3657 | regcache_raw_supply (current_regcache, r->regnum, | |
3658 | regs + r->offset); | |
b323314b | 3659 | } |
ad10f812 AC |
3660 | } |
3661 | } | |
c906108c SS |
3662 | } |
3663 | ||
29709017 DJ |
3664 | static void |
3665 | fetch_registers_using_g (void) | |
3666 | { | |
3667 | send_g_packet (); | |
3668 | process_g_packet (); | |
3669 | } | |
3670 | ||
74ca34ce DJ |
3671 | static void |
3672 | remote_fetch_registers (int regnum) | |
3673 | { | |
3674 | struct remote_state *rs = get_remote_state (); | |
3675 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
3676 | int i; | |
3677 | ||
3678 | set_thread (PIDGET (inferior_ptid), 1); | |
3679 | ||
3680 | if (regnum >= 0) | |
3681 | { | |
3682 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
3683 | gdb_assert (reg != NULL); | |
3684 | ||
3685 | /* If this register might be in the 'g' packet, try that first - | |
3686 | we are likely to read more than one register. If this is the | |
3687 | first 'g' packet, we might be overly optimistic about its | |
3688 | contents, so fall back to 'p'. */ | |
3689 | if (reg->in_g_packet) | |
3690 | { | |
3691 | fetch_registers_using_g (); | |
3692 | if (reg->in_g_packet) | |
3693 | return; | |
3694 | } | |
3695 | ||
3696 | if (fetch_register_using_p (reg)) | |
3697 | return; | |
3698 | ||
3699 | /* This register is not available. */ | |
3700 | regcache_raw_supply (current_regcache, reg->regnum, NULL); | |
3701 | set_register_cached (reg->regnum, -1); | |
3702 | ||
3703 | return; | |
3704 | } | |
3705 | ||
3706 | fetch_registers_using_g (); | |
3707 | ||
3708 | for (i = 0; i < NUM_REGS; i++) | |
3709 | if (!rsa->regs[i].in_g_packet) | |
3710 | if (!fetch_register_using_p (&rsa->regs[i])) | |
3711 | { | |
3712 | /* This register is not available. */ | |
3713 | regcache_raw_supply (current_regcache, i, NULL); | |
3714 | set_register_cached (i, -1); | |
3715 | } | |
3716 | } | |
3717 | ||
c906108c SS |
3718 | /* Prepare to store registers. Since we may send them all (using a |
3719 | 'G' request), we have to read out the ones we don't want to change | |
3720 | first. */ | |
3721 | ||
c5aa993b | 3722 | static void |
fba45db2 | 3723 | remote_prepare_to_store (void) |
c906108c | 3724 | { |
ea9c271d | 3725 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cf0e1e0d | 3726 | int i; |
cfd77fa1 | 3727 | gdb_byte buf[MAX_REGISTER_SIZE]; |
cf0e1e0d | 3728 | |
c906108c | 3729 | /* Make sure the entire registers array is valid. */ |
444abaca | 3730 | switch (remote_protocol_packets[PACKET_P].support) |
5a2468f5 JM |
3731 | { |
3732 | case PACKET_DISABLE: | |
3733 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d DJ |
3734 | /* Make sure all the necessary registers are cached. */ |
3735 | for (i = 0; i < NUM_REGS; i++) | |
ea9c271d DJ |
3736 | if (rsa->regs[i].in_g_packet) |
3737 | regcache_raw_read (current_regcache, rsa->regs[i].regnum, buf); | |
5a2468f5 JM |
3738 | break; |
3739 | case PACKET_ENABLE: | |
3740 | break; | |
3741 | } | |
3742 | } | |
3743 | ||
ad10f812 | 3744 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 3745 | packet was not recognized. */ |
5a2468f5 JM |
3746 | |
3747 | static int | |
74ca34ce | 3748 | store_register_using_P (struct packet_reg *reg) |
5a2468f5 | 3749 | { |
d01949b6 | 3750 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 3751 | struct remote_arch_state *rsa = get_remote_arch_state (); |
5a2468f5 | 3752 | /* Try storing a single register. */ |
6d820c5c | 3753 | char *buf = rs->buf; |
cfd77fa1 | 3754 | gdb_byte regp[MAX_REGISTER_SIZE]; |
5a2468f5 | 3755 | char *p; |
5a2468f5 | 3756 | |
74ca34ce DJ |
3757 | if (remote_protocol_packets[PACKET_P].support == PACKET_DISABLE) |
3758 | return 0; | |
3759 | ||
3760 | if (reg->pnum == -1) | |
3761 | return 0; | |
3762 | ||
ea9c271d | 3763 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 3764 | p = buf + strlen (buf); |
822c9732 | 3765 | regcache_raw_collect (current_regcache, reg->regnum, regp); |
3acba339 | 3766 | bin2hex (regp, p, register_size (current_gdbarch, reg->regnum)); |
6d820c5c | 3767 | remote_send (&rs->buf, &rs->buf_size); |
5a2468f5 | 3768 | |
74ca34ce DJ |
3769 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
3770 | { | |
3771 | case PACKET_OK: | |
3772 | return 1; | |
3773 | case PACKET_ERROR: | |
3774 | error (_("Could not write register \"%s\""), | |
3775 | gdbarch_register_name (current_gdbarch, reg->regnum)); | |
3776 | case PACKET_UNKNOWN: | |
3777 | return 0; | |
3778 | default: | |
3779 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
3780 | } | |
c906108c SS |
3781 | } |
3782 | ||
23860348 MS |
3783 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
3784 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
3785 | |
3786 | static void | |
74ca34ce | 3787 | store_registers_using_G (void) |
c906108c | 3788 | { |
d01949b6 | 3789 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 3790 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cfd77fa1 | 3791 | gdb_byte *regs; |
c906108c SS |
3792 | char *p; |
3793 | ||
193cb69f AC |
3794 | /* Extract all the registers in the regcache copying them into a |
3795 | local buffer. */ | |
3796 | { | |
b323314b | 3797 | int i; |
ea9c271d DJ |
3798 | regs = alloca (rsa->sizeof_g_packet); |
3799 | memset (regs, 0, rsa->sizeof_g_packet); | |
74ca34ce | 3800 | for (i = 0; i < NUM_REGS; i++) |
193cb69f | 3801 | { |
ea9c271d | 3802 | struct packet_reg *r = &rsa->regs[i]; |
b323314b | 3803 | if (r->in_g_packet) |
822c9732 | 3804 | regcache_raw_collect (current_regcache, r->regnum, regs + r->offset); |
193cb69f AC |
3805 | } |
3806 | } | |
c906108c SS |
3807 | |
3808 | /* Command describes registers byte by byte, | |
3809 | each byte encoded as two hex characters. */ | |
6d820c5c | 3810 | p = rs->buf; |
193cb69f | 3811 | *p++ = 'G'; |
74ca34ce DJ |
3812 | /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets |
3813 | updated. */ | |
3814 | bin2hex (regs, p, rsa->sizeof_g_packet); | |
6d820c5c | 3815 | remote_send (&rs->buf, &rs->buf_size); |
c906108c | 3816 | } |
74ca34ce DJ |
3817 | |
3818 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
3819 | of the register cache buffer. FIXME: ignores errors. */ | |
3820 | ||
3821 | static void | |
3822 | remote_store_registers (int regnum) | |
3823 | { | |
3824 | struct remote_state *rs = get_remote_state (); | |
3825 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
3826 | int i; | |
3827 | ||
3828 | set_thread (PIDGET (inferior_ptid), 1); | |
3829 | ||
3830 | if (regnum >= 0) | |
3831 | { | |
3832 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
3833 | gdb_assert (reg != NULL); | |
3834 | ||
3835 | /* Always prefer to store registers using the 'P' packet if | |
3836 | possible; we often change only a small number of registers. | |
3837 | Sometimes we change a larger number; we'd need help from a | |
3838 | higher layer to know to use 'G'. */ | |
3839 | if (store_register_using_P (reg)) | |
3840 | return; | |
3841 | ||
3842 | /* For now, don't complain if we have no way to write the | |
3843 | register. GDB loses track of unavailable registers too | |
3844 | easily. Some day, this may be an error. We don't have | |
3845 | any way to read the register, either... */ | |
3846 | if (!reg->in_g_packet) | |
3847 | return; | |
3848 | ||
3849 | store_registers_using_G (); | |
3850 | return; | |
3851 | } | |
3852 | ||
3853 | store_registers_using_G (); | |
3854 | ||
3855 | for (i = 0; i < NUM_REGS; i++) | |
3856 | if (!rsa->regs[i].in_g_packet) | |
3857 | if (!store_register_using_P (&rsa->regs[i])) | |
3858 | /* See above for why we do not issue an error here. */ | |
3859 | continue; | |
3860 | } | |
c906108c SS |
3861 | \f |
3862 | ||
3863 | /* Return the number of hex digits in num. */ | |
3864 | ||
3865 | static int | |
fba45db2 | 3866 | hexnumlen (ULONGEST num) |
c906108c SS |
3867 | { |
3868 | int i; | |
3869 | ||
3870 | for (i = 0; num != 0; i++) | |
3871 | num >>= 4; | |
3872 | ||
3873 | return max (i, 1); | |
3874 | } | |
3875 | ||
2df3850c | 3876 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
3877 | |
3878 | static int | |
fba45db2 | 3879 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 3880 | { |
c906108c | 3881 | int len = hexnumlen (num); |
2df3850c JM |
3882 | return hexnumnstr (buf, num, len); |
3883 | } | |
3884 | ||
c906108c | 3885 | |
2df3850c | 3886 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 3887 | |
2df3850c | 3888 | static int |
fba45db2 | 3889 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
3890 | { |
3891 | int i; | |
3892 | ||
3893 | buf[width] = '\0'; | |
3894 | ||
3895 | for (i = width - 1; i >= 0; i--) | |
c906108c | 3896 | { |
c5aa993b | 3897 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
3898 | num >>= 4; |
3899 | } | |
3900 | ||
2df3850c | 3901 | return width; |
c906108c SS |
3902 | } |
3903 | ||
23860348 | 3904 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
3905 | |
3906 | static CORE_ADDR | |
fba45db2 | 3907 | remote_address_masked (CORE_ADDR addr) |
c906108c SS |
3908 | { |
3909 | if (remote_address_size > 0 | |
3910 | && remote_address_size < (sizeof (ULONGEST) * 8)) | |
3911 | { | |
3912 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 3913 | in a ULONGEST variable. */ |
c906108c SS |
3914 | ULONGEST mask = 1; |
3915 | mask = (mask << remote_address_size) - 1; | |
3916 | addr &= mask; | |
3917 | } | |
3918 | return addr; | |
3919 | } | |
3920 | ||
a31ea83d DJ |
3921 | /* Convert BUFFER, binary data at least LEN bytes long, into escaped |
3922 | binary data in OUT_BUF. Set *OUT_LEN to the length of the data | |
3923 | encoded in OUT_BUF, and return the number of bytes in OUT_BUF | |
3924 | (which may be more than *OUT_LEN due to escape characters). The | |
3925 | total number of bytes in the output buffer will be at most | |
3926 | OUT_MAXLEN. */ | |
3927 | ||
3928 | static int | |
3929 | remote_escape_output (const gdb_byte *buffer, int len, | |
3930 | gdb_byte *out_buf, int *out_len, | |
3931 | int out_maxlen) | |
3932 | { | |
3933 | int input_index, output_index; | |
3934 | ||
3935 | output_index = 0; | |
3936 | for (input_index = 0; input_index < len; input_index++) | |
3937 | { | |
3938 | gdb_byte b = buffer[input_index]; | |
3939 | ||
3940 | if (b == '$' || b == '#' || b == '}') | |
3941 | { | |
3942 | /* These must be escaped. */ | |
3943 | if (output_index + 2 > out_maxlen) | |
3944 | break; | |
3945 | out_buf[output_index++] = '}'; | |
3946 | out_buf[output_index++] = b ^ 0x20; | |
3947 | } | |
3948 | else | |
3949 | { | |
3950 | if (output_index + 1 > out_maxlen) | |
3951 | break; | |
3952 | out_buf[output_index++] = b; | |
3953 | } | |
3954 | } | |
3955 | ||
3956 | *out_len = input_index; | |
3957 | return output_index; | |
3958 | } | |
3959 | ||
0876f84a DJ |
3960 | /* Convert BUFFER, escaped data LEN bytes long, into binary data |
3961 | in OUT_BUF. Return the number of bytes written to OUT_BUF. | |
3962 | Raise an error if the total number of bytes exceeds OUT_MAXLEN. | |
3963 | ||
3964 | This function reverses remote_escape_output. It allows more | |
3965 | escaped characters than that function does, in particular because | |
3966 | '*' must be escaped to avoid the run-length encoding processing | |
3967 | in reading packets. */ | |
3968 | ||
3969 | static int | |
3970 | remote_unescape_input (const gdb_byte *buffer, int len, | |
3971 | gdb_byte *out_buf, int out_maxlen) | |
3972 | { | |
3973 | int input_index, output_index; | |
3974 | int escaped; | |
3975 | ||
3976 | output_index = 0; | |
3977 | escaped = 0; | |
3978 | for (input_index = 0; input_index < len; input_index++) | |
3979 | { | |
3980 | gdb_byte b = buffer[input_index]; | |
3981 | ||
3982 | if (output_index + 1 > out_maxlen) | |
3983 | { | |
3984 | warning (_("Received too much data from remote target;" | |
3985 | " ignoring overflow.")); | |
3986 | return output_index; | |
3987 | } | |
3988 | ||
3989 | if (escaped) | |
3990 | { | |
3991 | out_buf[output_index++] = b ^ 0x20; | |
3992 | escaped = 0; | |
3993 | } | |
3994 | else if (b == '}') | |
3995 | escaped = 1; | |
3996 | else | |
3997 | out_buf[output_index++] = b; | |
3998 | } | |
3999 | ||
4000 | if (escaped) | |
4001 | error (_("Unmatched escape character in target response.")); | |
4002 | ||
4003 | return output_index; | |
4004 | } | |
4005 | ||
c906108c SS |
4006 | /* Determine whether the remote target supports binary downloading. |
4007 | This is accomplished by sending a no-op memory write of zero length | |
4008 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
4009 | the whole packet, since many stubs strip the eighth bit and |
4010 | subsequently compute a wrong checksum, which causes real havoc with | |
4011 | remote_write_bytes. | |
7a292a7a | 4012 | |
96baa820 JM |
4013 | NOTE: This can still lose if the serial line is not eight-bit |
4014 | clean. In cases like this, the user should clear "remote | |
23860348 | 4015 | X-packet". */ |
96baa820 | 4016 | |
c906108c | 4017 | static void |
fba45db2 | 4018 | check_binary_download (CORE_ADDR addr) |
c906108c | 4019 | { |
d01949b6 | 4020 | struct remote_state *rs = get_remote_state (); |
24b06219 | 4021 | |
444abaca | 4022 | switch (remote_protocol_packets[PACKET_X].support) |
c906108c | 4023 | { |
96baa820 JM |
4024 | case PACKET_DISABLE: |
4025 | break; | |
4026 | case PACKET_ENABLE: | |
4027 | break; | |
4028 | case PACKET_SUPPORT_UNKNOWN: | |
4029 | { | |
96baa820 | 4030 | char *p; |
802188a7 | 4031 | |
2e9f7625 | 4032 | p = rs->buf; |
96baa820 JM |
4033 | *p++ = 'X'; |
4034 | p += hexnumstr (p, (ULONGEST) addr); | |
4035 | *p++ = ','; | |
4036 | p += hexnumstr (p, (ULONGEST) 0); | |
4037 | *p++ = ':'; | |
4038 | *p = '\0'; | |
802188a7 | 4039 | |
2e9f7625 | 4040 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 4041 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 4042 | |
2e9f7625 | 4043 | if (rs->buf[0] == '\0') |
96baa820 JM |
4044 | { |
4045 | if (remote_debug) | |
4046 | fprintf_unfiltered (gdb_stdlog, | |
4047 | "binary downloading NOT suppported by target\n"); | |
444abaca | 4048 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
4049 | } |
4050 | else | |
4051 | { | |
4052 | if (remote_debug) | |
4053 | fprintf_unfiltered (gdb_stdlog, | |
4054 | "binary downloading suppported by target\n"); | |
444abaca | 4055 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
4056 | } |
4057 | break; | |
4058 | } | |
c906108c SS |
4059 | } |
4060 | } | |
4061 | ||
4062 | /* Write memory data directly to the remote machine. | |
4063 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 4064 | HEADER is the starting part of the packet. |
c906108c SS |
4065 | MEMADDR is the address in the remote memory space. |
4066 | MYADDR is the address of the buffer in our space. | |
4067 | LEN is the number of bytes. | |
a76d924d DJ |
4068 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
4069 | should send data as binary ('X'), or hex-encoded ('M'). | |
4070 | ||
4071 | The function creates packet of the form | |
4072 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
4073 | ||
4074 | where encoding of <DATA> is termined by PACKET_FORMAT. | |
4075 | ||
4076 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
4077 | are omitted. | |
4078 | ||
4079 | Returns the number of bytes transferred, or 0 (setting errno) for | |
23860348 | 4080 | error. Only transfer a single packet. */ |
c906108c | 4081 | |
a76d924d DJ |
4082 | static int |
4083 | remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, | |
4084 | const gdb_byte *myaddr, int len, | |
4085 | char packet_format, int use_length) | |
c906108c | 4086 | { |
6d820c5c | 4087 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 4088 | char *p; |
a76d924d DJ |
4089 | char *plen = NULL; |
4090 | int plenlen = 0; | |
917317f4 JM |
4091 | int todo; |
4092 | int nr_bytes; | |
a257b5bb | 4093 | int payload_size; |
6765f3e5 | 4094 | int payload_length; |
a76d924d DJ |
4095 | int header_length; |
4096 | ||
4097 | if (packet_format != 'X' && packet_format != 'M') | |
4098 | internal_error (__FILE__, __LINE__, | |
4099 | "remote_write_bytes_aux: bad packet format"); | |
c906108c | 4100 | |
b2182ed2 DJ |
4101 | /* Should this be the selected frame? */ |
4102 | gdbarch_remote_translate_xfer_address (current_gdbarch, | |
4103 | current_regcache, | |
4104 | memaddr, len, | |
4105 | &memaddr, &len); | |
4106 | ||
4107 | if (len <= 0) | |
4108 | return 0; | |
4109 | ||
3de11b2e | 4110 | payload_size = get_memory_write_packet_size (); |
2bc416ba | 4111 | |
6d820c5c DJ |
4112 | /* The packet buffer will be large enough for the payload; |
4113 | get_memory_packet_size ensures this. */ | |
a76d924d | 4114 | rs->buf[0] = '\0'; |
c906108c | 4115 | |
a257b5bb | 4116 | /* Compute the size of the actual payload by subtracting out the |
3de11b2e NS |
4117 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". |
4118 | */ | |
a76d924d DJ |
4119 | payload_size -= strlen ("$,:#NN"); |
4120 | if (!use_length) | |
4121 | /* The comma won't be used. */ | |
4122 | payload_size += 1; | |
4123 | header_length = strlen (header); | |
4124 | payload_size -= header_length; | |
3de11b2e | 4125 | payload_size -= hexnumlen (memaddr); |
c906108c | 4126 | |
a76d924d | 4127 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 4128 | |
a76d924d DJ |
4129 | strcat (rs->buf, header); |
4130 | p = rs->buf + strlen (header); | |
4131 | ||
4132 | /* Compute a best guess of the number of bytes actually transfered. */ | |
4133 | if (packet_format == 'X') | |
c906108c | 4134 | { |
23860348 | 4135 | /* Best guess at number of bytes that will fit. */ |
a257b5bb | 4136 | todo = min (len, payload_size); |
a76d924d DJ |
4137 | if (use_length) |
4138 | payload_size -= hexnumlen (todo); | |
3de11b2e | 4139 | todo = min (todo, payload_size); |
a76d924d DJ |
4140 | } |
4141 | else | |
4142 | { | |
23860348 | 4143 | /* Num bytes that will fit. */ |
a257b5bb | 4144 | todo = min (len, payload_size / 2); |
a76d924d DJ |
4145 | if (use_length) |
4146 | payload_size -= hexnumlen (todo); | |
3de11b2e | 4147 | todo = min (todo, payload_size / 2); |
917317f4 | 4148 | } |
a76d924d | 4149 | |
3de11b2e NS |
4150 | if (todo <= 0) |
4151 | internal_error (__FILE__, __LINE__, | |
4152 | _("minumum packet size too small to write data")); | |
802188a7 | 4153 | |
6765f3e5 DJ |
4154 | /* If we already need another packet, then try to align the end |
4155 | of this packet to a useful boundary. */ | |
4156 | if (todo > 2 * REMOTE_ALIGN_WRITES && todo < len) | |
4157 | todo = ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
4158 | ||
a257b5bb | 4159 | /* Append "<memaddr>". */ |
917317f4 JM |
4160 | memaddr = remote_address_masked (memaddr); |
4161 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 4162 | |
a76d924d DJ |
4163 | if (use_length) |
4164 | { | |
4165 | /* Append ",". */ | |
4166 | *p++ = ','; | |
802188a7 | 4167 | |
a76d924d DJ |
4168 | /* Append <len>. Retain the location/size of <len>. It may need to |
4169 | be adjusted once the packet body has been created. */ | |
4170 | plen = p; | |
4171 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
4172 | p += plenlen; | |
4173 | } | |
a257b5bb AC |
4174 | |
4175 | /* Append ":". */ | |
917317f4 JM |
4176 | *p++ = ':'; |
4177 | *p = '\0'; | |
802188a7 | 4178 | |
a257b5bb | 4179 | /* Append the packet body. */ |
a76d924d | 4180 | if (packet_format == 'X') |
917317f4 | 4181 | { |
917317f4 JM |
4182 | /* Binary mode. Send target system values byte by byte, in |
4183 | increasing byte addresses. Only escape certain critical | |
4184 | characters. */ | |
6765f3e5 DJ |
4185 | payload_length = remote_escape_output (myaddr, todo, p, &nr_bytes, |
4186 | payload_size); | |
4187 | ||
4188 | /* If not all TODO bytes fit, then we'll need another packet. Make | |
9b7194bc DJ |
4189 | a second try to keep the end of the packet aligned. Don't do |
4190 | this if the packet is tiny. */ | |
4191 | if (nr_bytes < todo && nr_bytes > 2 * REMOTE_ALIGN_WRITES) | |
6765f3e5 DJ |
4192 | { |
4193 | int new_nr_bytes; | |
4194 | ||
4195 | new_nr_bytes = (((memaddr + nr_bytes) & ~(REMOTE_ALIGN_WRITES - 1)) | |
4196 | - memaddr); | |
4197 | if (new_nr_bytes != nr_bytes) | |
4198 | payload_length = remote_escape_output (myaddr, new_nr_bytes, | |
4199 | p, &nr_bytes, | |
4200 | payload_size); | |
4201 | } | |
4202 | ||
4203 | p += payload_length; | |
a76d924d | 4204 | if (use_length && nr_bytes < todo) |
c906108c | 4205 | { |
802188a7 | 4206 | /* Escape chars have filled up the buffer prematurely, |
917317f4 JM |
4207 | and we have actually sent fewer bytes than planned. |
4208 | Fix-up the length field of the packet. Use the same | |
4209 | number of characters as before. */ | |
917317f4 JM |
4210 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); |
4211 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 4212 | } |
a76d924d DJ |
4213 | } |
4214 | else | |
4215 | { | |
917317f4 JM |
4216 | /* Normal mode: Send target system values byte by byte, in |
4217 | increasing byte addresses. Each byte is encoded as a two hex | |
4218 | value. */ | |
2644f393 | 4219 | nr_bytes = bin2hex (myaddr, p, todo); |
aa6c0017 | 4220 | p += 2 * nr_bytes; |
c906108c | 4221 | } |
802188a7 | 4222 | |
2e9f7625 | 4223 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 4224 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 4225 | |
2e9f7625 | 4226 | if (rs->buf[0] == 'E') |
917317f4 JM |
4227 | { |
4228 | /* There is no correspondance between what the remote protocol | |
4229 | uses for errors and errno codes. We would like a cleaner way | |
4230 | of representing errors (big enough to include errno codes, | |
4231 | bfd_error codes, and others). But for now just return EIO. */ | |
4232 | errno = EIO; | |
4233 | return 0; | |
4234 | } | |
802188a7 | 4235 | |
23860348 MS |
4236 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send |
4237 | fewer bytes than we'd planned. */ | |
917317f4 | 4238 | return nr_bytes; |
c906108c SS |
4239 | } |
4240 | ||
a76d924d DJ |
4241 | /* Write memory data directly to the remote machine. |
4242 | This does not inform the data cache; the data cache uses this. | |
4243 | MEMADDR is the address in the remote memory space. | |
4244 | MYADDR is the address of the buffer in our space. | |
4245 | LEN is the number of bytes. | |
4246 | ||
4247 | Returns number of bytes transferred, or 0 (setting errno) for | |
4248 | error. Only transfer a single packet. */ | |
4249 | ||
4250 | int | |
4251 | remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, int len) | |
4252 | { | |
4253 | char *packet_format = 0; | |
4254 | ||
4255 | /* Check whether the target supports binary download. */ | |
4256 | check_binary_download (memaddr); | |
4257 | ||
4258 | switch (remote_protocol_packets[PACKET_X].support) | |
4259 | { | |
4260 | case PACKET_ENABLE: | |
4261 | packet_format = "X"; | |
4262 | break; | |
4263 | case PACKET_DISABLE: | |
4264 | packet_format = "M"; | |
4265 | break; | |
4266 | case PACKET_SUPPORT_UNKNOWN: | |
4267 | internal_error (__FILE__, __LINE__, | |
4268 | _("remote_write_bytes: bad internal state")); | |
4269 | default: | |
4270 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
4271 | } | |
4272 | ||
4273 | return remote_write_bytes_aux (packet_format, | |
4274 | memaddr, myaddr, len, packet_format[0], 1); | |
4275 | } | |
4276 | ||
c906108c SS |
4277 | /* Read memory data directly from the remote machine. |
4278 | This does not use the data cache; the data cache uses this. | |
4279 | MEMADDR is the address in the remote memory space. | |
4280 | MYADDR is the address of the buffer in our space. | |
4281 | LEN is the number of bytes. | |
4282 | ||
4283 | Returns number of bytes transferred, or 0 for error. */ | |
4284 | ||
917317f4 JM |
4285 | /* NOTE: cagney/1999-10-18: This function (and its siblings in other |
4286 | remote targets) shouldn't attempt to read the entire buffer. | |
4287 | Instead it should read a single packet worth of data and then | |
4288 | return the byte size of that packet to the caller. The caller (its | |
4289 | caller and its callers caller ;-) already contains code for | |
23860348 | 4290 | handling partial reads. */ |
917317f4 | 4291 | |
449092f6 | 4292 | int |
cfd77fa1 | 4293 | remote_read_bytes (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
c906108c | 4294 | { |
6d820c5c | 4295 | struct remote_state *rs = get_remote_state (); |
23860348 | 4296 | int max_buf_size; /* Max size of packet output buffer. */ |
c906108c SS |
4297 | int origlen; |
4298 | ||
b2182ed2 DJ |
4299 | /* Should this be the selected frame? */ |
4300 | gdbarch_remote_translate_xfer_address (current_gdbarch, | |
4301 | current_regcache, | |
4302 | memaddr, len, | |
4303 | &memaddr, &len); | |
4304 | ||
4305 | if (len <= 0) | |
4306 | return 0; | |
4307 | ||
11cf8741 | 4308 | max_buf_size = get_memory_read_packet_size (); |
6d820c5c DJ |
4309 | /* The packet buffer will be large enough for the payload; |
4310 | get_memory_packet_size ensures this. */ | |
c906108c SS |
4311 | |
4312 | origlen = len; | |
4313 | while (len > 0) | |
4314 | { | |
c906108c SS |
4315 | char *p; |
4316 | int todo; | |
4317 | int i; | |
4318 | ||
c5aa993b | 4319 | todo = min (len, max_buf_size / 2); /* num bytes that will fit */ |
c906108c SS |
4320 | |
4321 | /* construct "m"<memaddr>","<len>" */ | |
2e9f7625 | 4322 | /* sprintf (rs->buf, "m%lx,%x", (unsigned long) memaddr, todo); */ |
c906108c | 4323 | memaddr = remote_address_masked (memaddr); |
2e9f7625 | 4324 | p = rs->buf; |
c906108c SS |
4325 | *p++ = 'm'; |
4326 | p += hexnumstr (p, (ULONGEST) memaddr); | |
4327 | *p++ = ','; | |
4328 | p += hexnumstr (p, (ULONGEST) todo); | |
4329 | *p = '\0'; | |
4330 | ||
2e9f7625 | 4331 | putpkt (rs->buf); |
6d820c5c | 4332 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 4333 | |
2e9f7625 DJ |
4334 | if (rs->buf[0] == 'E' |
4335 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
4336 | && rs->buf[3] == '\0') | |
c906108c | 4337 | { |
23860348 MS |
4338 | /* There is no correspondance between what the remote |
4339 | protocol uses for errors and errno codes. We would like | |
4340 | a cleaner way of representing errors (big enough to | |
4341 | include errno codes, bfd_error codes, and others). But | |
4342 | for now just return EIO. */ | |
c906108c SS |
4343 | errno = EIO; |
4344 | return 0; | |
4345 | } | |
4346 | ||
c5aa993b JM |
4347 | /* Reply describes memory byte by byte, |
4348 | each byte encoded as two hex characters. */ | |
c906108c | 4349 | |
2e9f7625 | 4350 | p = rs->buf; |
30559e10 | 4351 | if ((i = hex2bin (p, myaddr, todo)) < todo) |
c906108c | 4352 | { |
30559e10 | 4353 | /* Reply is short. This means that we were able to read |
23860348 | 4354 | only part of what we wanted to. */ |
30559e10 | 4355 | return i + (origlen - len); |
c906108c SS |
4356 | } |
4357 | myaddr += todo; | |
4358 | memaddr += todo; | |
4359 | len -= todo; | |
4360 | } | |
4361 | return origlen; | |
4362 | } | |
4363 | \f | |
4364 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
23860348 MS |
4365 | transferring to or from debugger address BUFFER. Write to inferior |
4366 | if SHOULD_WRITE is nonzero. Returns length of data written or | |
4367 | read; 0 for error. TARGET is unused. */ | |
392a587b | 4368 | |
c906108c | 4369 | static int |
961cb7b5 | 4370 | remote_xfer_memory (CORE_ADDR mem_addr, gdb_byte *buffer, int mem_len, |
0a65a603 | 4371 | int should_write, struct mem_attrib *attrib, |
29e57380 | 4372 | struct target_ops *target) |
c906108c | 4373 | { |
4930751a C |
4374 | int res; |
4375 | ||
4930751a | 4376 | if (should_write) |
b2182ed2 | 4377 | res = remote_write_bytes (mem_addr, buffer, mem_len); |
4930751a | 4378 | else |
b2182ed2 | 4379 | res = remote_read_bytes (mem_addr, buffer, mem_len); |
4930751a C |
4380 | |
4381 | return res; | |
c906108c SS |
4382 | } |
4383 | ||
a76d924d DJ |
4384 | /* Sends a packet with content determined by the printf format string |
4385 | FORMAT and the remaining arguments, then gets the reply. Returns | |
4386 | whether the packet was a success, a failure, or unknown. */ | |
4387 | ||
4388 | enum packet_result | |
4389 | remote_send_printf (const char *format, ...) | |
4390 | { | |
4391 | struct remote_state *rs = get_remote_state (); | |
4392 | int max_size = get_remote_packet_size (); | |
4393 | ||
4394 | va_list ap; | |
4395 | va_start (ap, format); | |
4396 | ||
4397 | rs->buf[0] = '\0'; | |
4398 | if (vsnprintf (rs->buf, max_size, format, ap) >= max_size) | |
4399 | internal_error (__FILE__, __LINE__, "Too long remote packet."); | |
4400 | ||
4401 | if (putpkt (rs->buf) < 0) | |
4402 | error (_("Communication problem with target.")); | |
4403 | ||
4404 | rs->buf[0] = '\0'; | |
4405 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4406 | ||
4407 | return packet_check_result (rs->buf); | |
4408 | } | |
4409 | ||
4410 | static void | |
4411 | restore_remote_timeout (void *p) | |
4412 | { | |
4413 | int value = *(int *)p; | |
4414 | remote_timeout = value; | |
4415 | } | |
4416 | ||
4417 | /* Flash writing can take quite some time. We'll set | |
4418 | effectively infinite timeout for flash operations. | |
4419 | In future, we'll need to decide on a better approach. */ | |
4420 | static const int remote_flash_timeout = 1000; | |
4421 | ||
4422 | static void | |
4423 | remote_flash_erase (struct target_ops *ops, | |
4424 | ULONGEST address, LONGEST length) | |
4425 | { | |
4426 | int saved_remote_timeout = remote_timeout; | |
4427 | enum packet_result ret; | |
4428 | ||
4429 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
4430 | &saved_remote_timeout); | |
4431 | remote_timeout = remote_flash_timeout; | |
4432 | ||
4433 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
4434 | paddr (address), | |
4435 | phex (length, 4)); | |
4436 | switch (ret) | |
4437 | { | |
4438 | case PACKET_UNKNOWN: | |
4439 | error (_("Remote target does not support flash erase")); | |
4440 | case PACKET_ERROR: | |
4441 | error (_("Error erasing flash with vFlashErase packet")); | |
4442 | default: | |
4443 | break; | |
4444 | } | |
4445 | ||
4446 | do_cleanups (back_to); | |
4447 | } | |
4448 | ||
4449 | static LONGEST | |
4450 | remote_flash_write (struct target_ops *ops, | |
4451 | ULONGEST address, LONGEST length, | |
4452 | const gdb_byte *data) | |
4453 | { | |
4454 | int saved_remote_timeout = remote_timeout; | |
4455 | int ret; | |
4456 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
4457 | &saved_remote_timeout); | |
4458 | ||
4459 | remote_timeout = remote_flash_timeout; | |
4460 | ret = remote_write_bytes_aux ("vFlashWrite:", address, data, length, 'X', 0); | |
4461 | do_cleanups (back_to); | |
4462 | ||
4463 | return ret; | |
4464 | } | |
4465 | ||
4466 | static void | |
4467 | remote_flash_done (struct target_ops *ops) | |
4468 | { | |
4469 | int saved_remote_timeout = remote_timeout; | |
4470 | int ret; | |
4471 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
4472 | &saved_remote_timeout); | |
4473 | ||
4474 | remote_timeout = remote_flash_timeout; | |
4475 | ret = remote_send_printf ("vFlashDone"); | |
4476 | do_cleanups (back_to); | |
4477 | ||
4478 | switch (ret) | |
4479 | { | |
4480 | case PACKET_UNKNOWN: | |
4481 | error (_("Remote target does not support vFlashDone")); | |
4482 | case PACKET_ERROR: | |
4483 | error (_("Error finishing flash operation")); | |
4484 | default: | |
4485 | break; | |
4486 | } | |
4487 | } | |
4488 | ||
c906108c | 4489 | static void |
fba45db2 | 4490 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
4491 | { |
4492 | puts_filtered ("Debugging a target over a serial line.\n"); | |
4493 | } | |
4494 | \f | |
4495 | /* Stuff for dealing with the packets which are part of this protocol. | |
4496 | See comment at top of file for details. */ | |
4497 | ||
0876f84a | 4498 | /* Read a single character from the remote end. */ |
c906108c SS |
4499 | |
4500 | static int | |
fba45db2 | 4501 | readchar (int timeout) |
c906108c SS |
4502 | { |
4503 | int ch; | |
4504 | ||
2cd58942 | 4505 | ch = serial_readchar (remote_desc, timeout); |
c906108c | 4506 | |
2acceee2 | 4507 | if (ch >= 0) |
0876f84a | 4508 | return ch; |
2acceee2 JM |
4509 | |
4510 | switch ((enum serial_rc) ch) | |
c906108c SS |
4511 | { |
4512 | case SERIAL_EOF: | |
2acceee2 | 4513 | target_mourn_inferior (); |
8a3fe4f8 | 4514 | error (_("Remote connection closed")); |
2acceee2 | 4515 | /* no return */ |
c906108c | 4516 | case SERIAL_ERROR: |
e2e0b3e5 | 4517 | perror_with_name (_("Remote communication error")); |
2acceee2 | 4518 | /* no return */ |
c906108c | 4519 | case SERIAL_TIMEOUT: |
2acceee2 | 4520 | break; |
c906108c | 4521 | } |
2acceee2 | 4522 | return ch; |
c906108c SS |
4523 | } |
4524 | ||
6d820c5c DJ |
4525 | /* Send the command in *BUF to the remote machine, and read the reply |
4526 | into *BUF. Report an error if we get an error reply. Resize | |
4527 | *BUF using xrealloc if necessary to hold the result, and update | |
4528 | *SIZEOF_BUF. */ | |
c906108c SS |
4529 | |
4530 | static void | |
6d820c5c DJ |
4531 | remote_send (char **buf, |
4532 | long *sizeof_buf) | |
c906108c | 4533 | { |
6d820c5c | 4534 | putpkt (*buf); |
c2d11a7d | 4535 | getpkt (buf, sizeof_buf, 0); |
c906108c | 4536 | |
6d820c5c DJ |
4537 | if ((*buf)[0] == 'E') |
4538 | error (_("Remote failure reply: %s"), *buf); | |
c906108c SS |
4539 | } |
4540 | ||
4541 | /* Display a null-terminated packet on stdout, for debugging, using C | |
4542 | string notation. */ | |
4543 | ||
4544 | static void | |
fba45db2 | 4545 | print_packet (char *buf) |
c906108c SS |
4546 | { |
4547 | puts_filtered ("\""); | |
43e526b9 | 4548 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
4549 | puts_filtered ("\""); |
4550 | } | |
4551 | ||
4552 | int | |
fba45db2 | 4553 | putpkt (char *buf) |
c906108c SS |
4554 | { |
4555 | return putpkt_binary (buf, strlen (buf)); | |
4556 | } | |
4557 | ||
4558 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 4559 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 4560 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
4561 | and for a possible /0 if we are debugging (remote_debug) and want |
4562 | to print the sent packet as a string. */ | |
c906108c SS |
4563 | |
4564 | static int | |
fba45db2 | 4565 | putpkt_binary (char *buf, int cnt) |
c906108c SS |
4566 | { |
4567 | int i; | |
4568 | unsigned char csum = 0; | |
11cf8741 | 4569 | char *buf2 = alloca (cnt + 6); |
085dd6e6 | 4570 | |
c906108c SS |
4571 | int ch; |
4572 | int tcount = 0; | |
4573 | char *p; | |
4574 | ||
4575 | /* Copy the packet into buffer BUF2, encapsulating it | |
4576 | and giving it a checksum. */ | |
4577 | ||
c906108c SS |
4578 | p = buf2; |
4579 | *p++ = '$'; | |
4580 | ||
4581 | for (i = 0; i < cnt; i++) | |
4582 | { | |
4583 | csum += buf[i]; | |
4584 | *p++ = buf[i]; | |
4585 | } | |
4586 | *p++ = '#'; | |
4587 | *p++ = tohex ((csum >> 4) & 0xf); | |
4588 | *p++ = tohex (csum & 0xf); | |
4589 | ||
4590 | /* Send it over and over until we get a positive ack. */ | |
4591 | ||
4592 | while (1) | |
4593 | { | |
4594 | int started_error_output = 0; | |
4595 | ||
4596 | if (remote_debug) | |
4597 | { | |
4598 | *p = '\0'; | |
43e526b9 JM |
4599 | fprintf_unfiltered (gdb_stdlog, "Sending packet: "); |
4600 | fputstrn_unfiltered (buf2, p - buf2, 0, gdb_stdlog); | |
d4f3574e | 4601 | fprintf_unfiltered (gdb_stdlog, "..."); |
0f71a2f6 | 4602 | gdb_flush (gdb_stdlog); |
c906108c | 4603 | } |
2cd58942 | 4604 | if (serial_write (remote_desc, buf2, p - buf2)) |
e2e0b3e5 | 4605 | perror_with_name (_("putpkt: write failed")); |
c906108c | 4606 | |
23860348 | 4607 | /* Read until either a timeout occurs (-2) or '+' is read. */ |
c906108c SS |
4608 | while (1) |
4609 | { | |
4610 | ch = readchar (remote_timeout); | |
4611 | ||
c5aa993b | 4612 | if (remote_debug) |
c906108c SS |
4613 | { |
4614 | switch (ch) | |
4615 | { | |
4616 | case '+': | |
1216fa2c | 4617 | case '-': |
c906108c SS |
4618 | case SERIAL_TIMEOUT: |
4619 | case '$': | |
4620 | if (started_error_output) | |
4621 | { | |
4622 | putchar_unfiltered ('\n'); | |
4623 | started_error_output = 0; | |
4624 | } | |
4625 | } | |
4626 | } | |
4627 | ||
4628 | switch (ch) | |
4629 | { | |
4630 | case '+': | |
4631 | if (remote_debug) | |
0f71a2f6 | 4632 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 4633 | return 1; |
1216fa2c AC |
4634 | case '-': |
4635 | if (remote_debug) | |
4636 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
c906108c | 4637 | case SERIAL_TIMEOUT: |
c5aa993b | 4638 | tcount++; |
c906108c SS |
4639 | if (tcount > 3) |
4640 | return 0; | |
23860348 | 4641 | break; /* Retransmit buffer. */ |
c906108c SS |
4642 | case '$': |
4643 | { | |
40e3f985 | 4644 | if (remote_debug) |
2bc416ba | 4645 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 4646 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
4647 | /* It's probably an old response sent because an ACK |
4648 | was lost. Gobble up the packet and ack it so it | |
4649 | doesn't get retransmitted when we resend this | |
4650 | packet. */ | |
6d820c5c | 4651 | skip_frame (); |
d6f7abdf | 4652 | serial_write (remote_desc, "+", 1); |
23860348 | 4653 | continue; /* Now, go look for +. */ |
c906108c SS |
4654 | } |
4655 | default: | |
4656 | if (remote_debug) | |
4657 | { | |
4658 | if (!started_error_output) | |
4659 | { | |
4660 | started_error_output = 1; | |
0f71a2f6 | 4661 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 4662 | } |
0f71a2f6 | 4663 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
4664 | } |
4665 | continue; | |
4666 | } | |
23860348 | 4667 | break; /* Here to retransmit. */ |
c906108c SS |
4668 | } |
4669 | ||
4670 | #if 0 | |
4671 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
4672 | able to get out next time we call QUIT, without anything as |
4673 | violent as interrupt_query. If we want to provide a way out of | |
4674 | here without getting to the next QUIT, it should be based on | |
4675 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
4676 | if (quit_flag) |
4677 | { | |
4678 | quit_flag = 0; | |
4679 | interrupt_query (); | |
4680 | } | |
4681 | #endif | |
4682 | } | |
4683 | } | |
4684 | ||
6d820c5c DJ |
4685 | /* Come here after finding the start of a frame when we expected an |
4686 | ack. Do our best to discard the rest of this packet. */ | |
4687 | ||
4688 | static void | |
4689 | skip_frame (void) | |
4690 | { | |
4691 | int c; | |
4692 | ||
4693 | while (1) | |
4694 | { | |
4695 | c = readchar (remote_timeout); | |
4696 | switch (c) | |
4697 | { | |
4698 | case SERIAL_TIMEOUT: | |
4699 | /* Nothing we can do. */ | |
4700 | return; | |
4701 | case '#': | |
4702 | /* Discard the two bytes of checksum and stop. */ | |
4703 | c = readchar (remote_timeout); | |
4704 | if (c >= 0) | |
4705 | c = readchar (remote_timeout); | |
4706 | ||
4707 | return; | |
4708 | case '*': /* Run length encoding. */ | |
4709 | /* Discard the repeat count. */ | |
4710 | c = readchar (remote_timeout); | |
4711 | if (c < 0) | |
4712 | return; | |
4713 | break; | |
4714 | default: | |
4715 | /* A regular character. */ | |
4716 | break; | |
4717 | } | |
4718 | } | |
4719 | } | |
4720 | ||
c906108c | 4721 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
4722 | into *BUF, verifying the checksum, length, and handling run-length |
4723 | compression. NUL terminate the buffer. If there is not enough room, | |
4724 | expand *BUF using xrealloc. | |
c906108c | 4725 | |
c2d11a7d JM |
4726 | Returns -1 on error, number of characters in buffer (ignoring the |
4727 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 4728 | SERIAL status indications). */ |
c2d11a7d JM |
4729 | |
4730 | static long | |
6d820c5c DJ |
4731 | read_frame (char **buf_p, |
4732 | long *sizeof_buf) | |
c906108c SS |
4733 | { |
4734 | unsigned char csum; | |
c2d11a7d | 4735 | long bc; |
c906108c | 4736 | int c; |
6d820c5c | 4737 | char *buf = *buf_p; |
c906108c SS |
4738 | |
4739 | csum = 0; | |
c2d11a7d | 4740 | bc = 0; |
c906108c SS |
4741 | |
4742 | while (1) | |
4743 | { | |
4744 | c = readchar (remote_timeout); | |
c906108c SS |
4745 | switch (c) |
4746 | { | |
4747 | case SERIAL_TIMEOUT: | |
4748 | if (remote_debug) | |
0f71a2f6 | 4749 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 4750 | return -1; |
c906108c SS |
4751 | case '$': |
4752 | if (remote_debug) | |
0f71a2f6 JM |
4753 | fputs_filtered ("Saw new packet start in middle of old one\n", |
4754 | gdb_stdlog); | |
23860348 | 4755 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
4756 | case '#': |
4757 | { | |
4758 | unsigned char pktcsum; | |
e1b09194 AC |
4759 | int check_0 = 0; |
4760 | int check_1 = 0; | |
c906108c | 4761 | |
c2d11a7d | 4762 | buf[bc] = '\0'; |
c906108c | 4763 | |
e1b09194 AC |
4764 | check_0 = readchar (remote_timeout); |
4765 | if (check_0 >= 0) | |
4766 | check_1 = readchar (remote_timeout); | |
802188a7 | 4767 | |
e1b09194 AC |
4768 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
4769 | { | |
4770 | if (remote_debug) | |
2bc416ba | 4771 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 4772 | gdb_stdlog); |
e1b09194 AC |
4773 | return -1; |
4774 | } | |
4775 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
4776 | { |
4777 | if (remote_debug) | |
2bc416ba | 4778 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 4779 | gdb_stdlog); |
40e3f985 FN |
4780 | return -1; |
4781 | } | |
c906108c | 4782 | |
e1b09194 | 4783 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 4784 | if (csum == pktcsum) |
c2d11a7d | 4785 | return bc; |
c906108c | 4786 | |
c5aa993b | 4787 | if (remote_debug) |
c906108c | 4788 | { |
0f71a2f6 | 4789 | fprintf_filtered (gdb_stdlog, |
c5aa993b | 4790 | "Bad checksum, sentsum=0x%x, csum=0x%x, buf=", |
0f71a2f6 | 4791 | pktcsum, csum); |
0876f84a | 4792 | fputstrn_filtered (buf, bc, 0, gdb_stdlog); |
0f71a2f6 | 4793 | fputs_filtered ("\n", gdb_stdlog); |
c906108c | 4794 | } |
c2d11a7d | 4795 | /* Number of characters in buffer ignoring trailing |
23860348 | 4796 | NULL. */ |
c2d11a7d | 4797 | return -1; |
c906108c | 4798 | } |
23860348 | 4799 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
4800 | { |
4801 | int repeat; | |
4802 | csum += c; | |
c906108c | 4803 | |
b4501125 AC |
4804 | c = readchar (remote_timeout); |
4805 | csum += c; | |
23860348 | 4806 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 4807 | |
23860348 | 4808 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 4809 | |
6d820c5c | 4810 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 4811 | { |
6d820c5c DJ |
4812 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
4813 | { | |
4814 | /* Make some more room in the buffer. */ | |
4815 | *sizeof_buf += repeat; | |
4816 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
4817 | buf = *buf_p; | |
4818 | } | |
4819 | ||
c2d11a7d JM |
4820 | memset (&buf[bc], buf[bc - 1], repeat); |
4821 | bc += repeat; | |
c2c6d25f JM |
4822 | continue; |
4823 | } | |
4824 | ||
c2d11a7d | 4825 | buf[bc] = '\0'; |
6d820c5c | 4826 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 4827 | return -1; |
c2c6d25f | 4828 | } |
c906108c | 4829 | default: |
6d820c5c | 4830 | if (bc >= *sizeof_buf - 1) |
c906108c | 4831 | { |
6d820c5c DJ |
4832 | /* Make some more room in the buffer. */ |
4833 | *sizeof_buf *= 2; | |
4834 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
4835 | buf = *buf_p; | |
c906108c SS |
4836 | } |
4837 | ||
6d820c5c DJ |
4838 | buf[bc++] = c; |
4839 | csum += c; | |
4840 | continue; | |
c906108c SS |
4841 | } |
4842 | } | |
4843 | } | |
4844 | ||
4845 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
4846 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
4847 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
4848 | rather than timing out; this is used (in synchronous mode) to wait | |
4849 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
4850 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
4851 | don't have to change all the calls to getpkt to deal with the | |
4852 | return value, because at the moment I don't know what the right | |
23860348 | 4853 | thing to do it for those. */ |
c906108c | 4854 | void |
6d820c5c DJ |
4855 | getpkt (char **buf, |
4856 | long *sizeof_buf, | |
c2d11a7d | 4857 | int forever) |
d9fcf2fb JM |
4858 | { |
4859 | int timed_out; | |
4860 | ||
4861 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
4862 | } | |
4863 | ||
4864 | ||
4865 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
4866 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
4867 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
4868 | rather than timing out; this is used (in synchronous mode) to wait | |
4869 | for a target that is is executing user code to stop. If FOREVER == | |
4870 | 0, this function is allowed to time out gracefully and return an | |
0876f84a DJ |
4871 | indication of this to the caller. Otherwise return the number |
4872 | of bytes read. */ | |
3172dc30 | 4873 | static int |
6d820c5c | 4874 | getpkt_sane (char **buf, long *sizeof_buf, int forever) |
c906108c SS |
4875 | { |
4876 | int c; | |
4877 | int tries; | |
4878 | int timeout; | |
4879 | int val; | |
4880 | ||
6d820c5c | 4881 | strcpy (*buf, "timeout"); |
c906108c SS |
4882 | |
4883 | if (forever) | |
4884 | { | |
c906108c | 4885 | timeout = watchdog > 0 ? watchdog : -1; |
c906108c SS |
4886 | } |
4887 | ||
4888 | else | |
4889 | timeout = remote_timeout; | |
4890 | ||
4891 | #define MAX_TRIES 3 | |
4892 | ||
4893 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
4894 | { | |
4895 | /* This can loop forever if the remote side sends us characters | |
23860348 MS |
4896 | continuously, but if it pauses, we'll get a zero from |
4897 | readchar because of timeout. Then we'll count that as a | |
4898 | retry. */ | |
c906108c | 4899 | |
23860348 MS |
4900 | /* Note that we will only wait forever prior to the start of a |
4901 | packet. After that, we expect characters to arrive at a | |
4902 | brisk pace. They should show up within remote_timeout | |
4903 | intervals. */ | |
c906108c SS |
4904 | |
4905 | do | |
4906 | { | |
4907 | c = readchar (timeout); | |
4908 | ||
4909 | if (c == SERIAL_TIMEOUT) | |
4910 | { | |
23860348 | 4911 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 4912 | { |
2acceee2 | 4913 | QUIT; |
c906108c | 4914 | target_mourn_inferior (); |
8a3fe4f8 | 4915 | error (_("Watchdog has expired. Target detached.")); |
c906108c | 4916 | } |
c906108c | 4917 | if (remote_debug) |
0f71a2f6 | 4918 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c SS |
4919 | goto retry; |
4920 | } | |
4921 | } | |
4922 | while (c != '$'); | |
4923 | ||
4924 | /* We've found the start of a packet, now collect the data. */ | |
4925 | ||
c2d11a7d | 4926 | val = read_frame (buf, sizeof_buf); |
c906108c | 4927 | |
c2d11a7d | 4928 | if (val >= 0) |
c906108c SS |
4929 | { |
4930 | if (remote_debug) | |
43e526b9 JM |
4931 | { |
4932 | fprintf_unfiltered (gdb_stdlog, "Packet received: "); | |
0876f84a | 4933 | fputstrn_unfiltered (*buf, val, 0, gdb_stdlog); |
43e526b9 JM |
4934 | fprintf_unfiltered (gdb_stdlog, "\n"); |
4935 | } | |
2cd58942 | 4936 | serial_write (remote_desc, "+", 1); |
0876f84a | 4937 | return val; |
c906108c SS |
4938 | } |
4939 | ||
4940 | /* Try the whole thing again. */ | |
4941 | retry: | |
2cd58942 | 4942 | serial_write (remote_desc, "-", 1); |
c906108c SS |
4943 | } |
4944 | ||
2bc416ba | 4945 | /* We have tried hard enough, and just can't receive the packet. |
23860348 | 4946 | Give up. */ |
c906108c | 4947 | |
a3f17187 | 4948 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); |
2cd58942 | 4949 | serial_write (remote_desc, "+", 1); |
0876f84a | 4950 | return -1; |
c906108c SS |
4951 | } |
4952 | \f | |
4953 | static void | |
fba45db2 | 4954 | remote_kill (void) |
c906108c SS |
4955 | { |
4956 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4957 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4958 | if (kill_kludge) | |
4959 | { | |
4960 | kill_kludge = 0; | |
4961 | target_mourn_inferior (); | |
4962 | return; | |
4963 | } | |
4964 | ||
4965 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
4966 | speaking terms with the remote system. */ | |
c5aa993b | 4967 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
c906108c SS |
4968 | |
4969 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4970 | we do or not. For the existing stubs, kill is a noop. */ | |
4971 | target_mourn_inferior (); | |
4972 | } | |
4973 | ||
23860348 | 4974 | /* Async version of remote_kill. */ |
43ff13b4 | 4975 | static void |
fba45db2 | 4976 | remote_async_kill (void) |
43ff13b4 | 4977 | { |
23860348 | 4978 | /* Unregister the file descriptor from the event loop. */ |
ed9a39eb | 4979 | if (target_is_async_p ()) |
2cd58942 | 4980 | serial_async (remote_desc, NULL, 0); |
43ff13b4 JM |
4981 | |
4982 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4983 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4984 | if (kill_kludge) | |
4985 | { | |
4986 | kill_kludge = 0; | |
4987 | target_mourn_inferior (); | |
4988 | return; | |
4989 | } | |
4990 | ||
23860348 MS |
4991 | /* Use catch_errors so the user can quit from gdb even when we |
4992 | aren't on speaking terms with the remote system. */ | |
c5aa993b | 4993 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
4994 | |
4995 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4996 | we do or not. For the existing stubs, kill is a noop. */ | |
4997 | target_mourn_inferior (); | |
4998 | } | |
4999 | ||
c906108c | 5000 | static void |
fba45db2 | 5001 | remote_mourn (void) |
c906108c SS |
5002 | { |
5003 | remote_mourn_1 (&remote_ops); | |
5004 | } | |
5005 | ||
53a5351d | 5006 | static void |
fba45db2 | 5007 | remote_async_mourn (void) |
53a5351d JM |
5008 | { |
5009 | remote_mourn_1 (&remote_async_ops); | |
5010 | } | |
5011 | ||
c906108c | 5012 | static void |
fba45db2 | 5013 | extended_remote_mourn (void) |
c906108c SS |
5014 | { |
5015 | /* We do _not_ want to mourn the target like this; this will | |
5016 | remove the extended remote target from the target stack, | |
802188a7 | 5017 | and the next time the user says "run" it'll fail. |
c906108c SS |
5018 | |
5019 | FIXME: What is the right thing to do here? */ | |
5020 | #if 0 | |
5021 | remote_mourn_1 (&extended_remote_ops); | |
5022 | #endif | |
5023 | } | |
5024 | ||
5025 | /* Worker function for remote_mourn. */ | |
5026 | static void | |
fba45db2 | 5027 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
5028 | { |
5029 | unpush_target (target); | |
5030 | generic_mourn_inferior (); | |
5031 | } | |
5032 | ||
5033 | /* In the extended protocol we want to be able to do things like | |
5034 | "run" and have them basically work as expected. So we need | |
802188a7 | 5035 | a special create_inferior function. |
c906108c SS |
5036 | |
5037 | FIXME: One day add support for changing the exec file | |
5038 | we're debugging, arguments and an environment. */ | |
5039 | ||
5040 | static void | |
23860348 MS |
5041 | extended_remote_create_inferior (char *exec_file, char *args, |
5042 | char **env, int from_tty) | |
c906108c SS |
5043 | { |
5044 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
5045 | the remote server. */ | |
5046 | remove_breakpoints (); | |
5047 | ||
5048 | /* Now restart the remote server. */ | |
5049 | extended_remote_restart (); | |
5050 | ||
424163ea DJ |
5051 | /* NOTE: We don't need to recheck for a target description here; but |
5052 | if we gain the ability to switch the remote executable we may | |
5053 | need to, if for instance we are running a process which requested | |
5054 | different emulated hardware from the operating system. A | |
5055 | concrete example of this is ARM GNU/Linux, where some binaries | |
5056 | will have a legacy FPA coprocessor emulated and others may have | |
5057 | access to a hardware VFP unit. */ | |
5058 | ||
c906108c SS |
5059 | /* Now put the breakpoints back in. This way we're safe if the |
5060 | restart function works via a unix fork on the remote side. */ | |
5061 | insert_breakpoints (); | |
5062 | ||
5063 | /* Clean up from the last time we were running. */ | |
5064 | clear_proceed_status (); | |
c906108c SS |
5065 | } |
5066 | ||
23860348 | 5067 | /* Async version of extended_remote_create_inferior. */ |
43ff13b4 | 5068 | static void |
23860348 MS |
5069 | extended_remote_async_create_inferior (char *exec_file, char *args, |
5070 | char **env, int from_tty) | |
43ff13b4 JM |
5071 | { |
5072 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
5073 | the remote server. */ | |
5074 | remove_breakpoints (); | |
5075 | ||
5076 | /* If running asynchronously, register the target file descriptor | |
23860348 | 5077 | with the event loop. */ |
362646f5 | 5078 | if (target_can_async_p ()) |
2acceee2 | 5079 | target_async (inferior_event_handler, 0); |
43ff13b4 JM |
5080 | |
5081 | /* Now restart the remote server. */ | |
5082 | extended_remote_restart (); | |
5083 | ||
424163ea DJ |
5084 | /* NOTE: We don't need to recheck for a target description here; but |
5085 | if we gain the ability to switch the remote executable we may | |
5086 | need to, if for instance we are running a process which requested | |
5087 | different emulated hardware from the operating system. A | |
5088 | concrete example of this is ARM GNU/Linux, where some binaries | |
5089 | will have a legacy FPA coprocessor emulated and others may have | |
5090 | access to a hardware VFP unit. */ | |
5091 | ||
43ff13b4 JM |
5092 | /* Now put the breakpoints back in. This way we're safe if the |
5093 | restart function works via a unix fork on the remote side. */ | |
5094 | insert_breakpoints (); | |
5095 | ||
5096 | /* Clean up from the last time we were running. */ | |
5097 | clear_proceed_status (); | |
43ff13b4 | 5098 | } |
c906108c | 5099 | \f |
c5aa993b | 5100 | |
aaab4dba | 5101 | /* On some machines, e.g. 68k, we may use a different breakpoint |
7fec2c59 AC |
5102 | instruction than other targets; in those use |
5103 | DEPRECATED_REMOTE_BREAKPOINT instead of just BREAKPOINT_FROM_PC. | |
5104 | Also, bi-endian targets may define | |
5105 | DEPRECATED_LITTLE_REMOTE_BREAKPOINT and | |
5106 | DEPRECATED_BIG_REMOTE_BREAKPOINT. If none of these are defined, we | |
5107 | just call the standard routines that are in mem-break.c. */ | |
5108 | ||
5109 | /* NOTE: cagney/2003-06-08: This is silly. A remote and simulator | |
5110 | target should use an identical BREAKPOINT_FROM_PC. As for native, | |
5111 | the ARCH-OS-tdep.c code can override the default. */ | |
5112 | ||
5113 | #if defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) && !defined(DEPRECATED_REMOTE_BREAKPOINT) | |
5114 | #define DEPRECATED_REMOTE_BREAKPOINT | |
c906108c SS |
5115 | #endif |
5116 | ||
7fec2c59 | 5117 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c SS |
5118 | |
5119 | /* If the target isn't bi-endian, just pretend it is. */ | |
7fec2c59 AC |
5120 | #if !defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && !defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) |
5121 | #define DEPRECATED_LITTLE_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT | |
5122 | #define DEPRECATED_BIG_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT | |
c906108c SS |
5123 | #endif |
5124 | ||
7fec2c59 AC |
5125 | static unsigned char big_break_insn[] = DEPRECATED_BIG_REMOTE_BREAKPOINT; |
5126 | static unsigned char little_break_insn[] = DEPRECATED_LITTLE_REMOTE_BREAKPOINT; | |
c906108c | 5127 | |
7fec2c59 | 5128 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c | 5129 | |
8181d85f DJ |
5130 | /* Insert a breakpoint. On targets that have software breakpoint |
5131 | support, we ask the remote target to do the work; on targets | |
5132 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c SS |
5133 | |
5134 | static int | |
8181d85f | 5135 | remote_insert_breakpoint (struct bp_target_info *bp_tgt) |
c906108c | 5136 | { |
8181d85f | 5137 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 5138 | struct remote_state *rs = get_remote_state (); |
7fec2c59 | 5139 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c | 5140 | int val; |
802188a7 | 5141 | #endif |
96baa820 | 5142 | |
d471ea57 AC |
5143 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
5144 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
5145 | fails, and the user has explicitly requested the Z support then | |
23860348 | 5146 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 5147 | |
444abaca | 5148 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 5149 | { |
6d820c5c | 5150 | char *p = rs->buf; |
802188a7 | 5151 | |
96baa820 JM |
5152 | *(p++) = 'Z'; |
5153 | *(p++) = '0'; | |
5154 | *(p++) = ','; | |
8181d85f DJ |
5155 | BREAKPOINT_FROM_PC (&bp_tgt->placed_address, &bp_tgt->placed_size); |
5156 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); | |
5157 | p += hexnumstr (p, addr); | |
5158 | sprintf (p, ",%d", bp_tgt->placed_size); | |
802188a7 | 5159 | |
6d820c5c DJ |
5160 | putpkt (rs->buf); |
5161 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5162 | |
6d820c5c | 5163 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 5164 | { |
d471ea57 AC |
5165 | case PACKET_ERROR: |
5166 | return -1; | |
5167 | case PACKET_OK: | |
5168 | return 0; | |
5169 | case PACKET_UNKNOWN: | |
5170 | break; | |
96baa820 JM |
5171 | } |
5172 | } | |
c906108c | 5173 | |
802188a7 | 5174 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
8181d85f DJ |
5175 | bp_tgt->placed_size = bp_tgt->shadow_len = sizeof big_break_insn; |
5176 | val = target_read_memory (addr, bp_tgt->shadow_contents, bp_tgt->shadow_len); | |
c906108c SS |
5177 | |
5178 | if (val == 0) | |
5179 | { | |
d7449b42 | 5180 | if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) |
c906108c SS |
5181 | val = target_write_memory (addr, (char *) big_break_insn, |
5182 | sizeof big_break_insn); | |
5183 | else | |
5184 | val = target_write_memory (addr, (char *) little_break_insn, | |
5185 | sizeof little_break_insn); | |
5186 | } | |
5187 | ||
5188 | return val; | |
5189 | #else | |
8181d85f | 5190 | return memory_insert_breakpoint (bp_tgt); |
7fec2c59 | 5191 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c SS |
5192 | } |
5193 | ||
5194 | static int | |
8181d85f | 5195 | remote_remove_breakpoint (struct bp_target_info *bp_tgt) |
c906108c | 5196 | { |
8181d85f | 5197 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 5198 | struct remote_state *rs = get_remote_state (); |
96baa820 JM |
5199 | int bp_size; |
5200 | ||
444abaca | 5201 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 5202 | { |
6d820c5c | 5203 | char *p = rs->buf; |
802188a7 | 5204 | |
96baa820 JM |
5205 | *(p++) = 'z'; |
5206 | *(p++) = '0'; | |
5207 | *(p++) = ','; | |
5208 | ||
8181d85f DJ |
5209 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
5210 | p += hexnumstr (p, addr); | |
5211 | sprintf (p, ",%d", bp_tgt->placed_size); | |
802188a7 | 5212 | |
6d820c5c DJ |
5213 | putpkt (rs->buf); |
5214 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5215 | |
6d820c5c | 5216 | return (rs->buf[0] == 'E'); |
96baa820 JM |
5217 | } |
5218 | ||
7fec2c59 | 5219 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
8181d85f DJ |
5220 | return target_write_memory (bp_tgt->placed_address, bp_tgt->shadow_contents, |
5221 | bp_tgt->shadow_len); | |
c906108c | 5222 | #else |
8181d85f | 5223 | return memory_remove_breakpoint (bp_tgt); |
7fec2c59 | 5224 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c SS |
5225 | } |
5226 | ||
d471ea57 AC |
5227 | static int |
5228 | watchpoint_to_Z_packet (int type) | |
5229 | { | |
5230 | switch (type) | |
5231 | { | |
5232 | case hw_write: | |
bb858e6a | 5233 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
5234 | break; |
5235 | case hw_read: | |
bb858e6a | 5236 | return Z_PACKET_READ_WP; |
d471ea57 AC |
5237 | break; |
5238 | case hw_access: | |
bb858e6a | 5239 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
5240 | break; |
5241 | default: | |
8e65ff28 | 5242 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5243 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
5244 | } |
5245 | } | |
5246 | ||
3c3bea1c | 5247 | static int |
fba45db2 | 5248 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 5249 | { |
d01949b6 | 5250 | struct remote_state *rs = get_remote_state (); |
e514a9d6 | 5251 | char *p; |
d471ea57 | 5252 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 5253 | |
444abaca | 5254 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
5cffb350 | 5255 | return -1; |
802188a7 | 5256 | |
6d820c5c DJ |
5257 | sprintf (rs->buf, "Z%x,", packet); |
5258 | p = strchr (rs->buf, '\0'); | |
96baa820 JM |
5259 | addr = remote_address_masked (addr); |
5260 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 5261 | sprintf (p, ",%x", len); |
802188a7 | 5262 | |
6d820c5c DJ |
5263 | putpkt (rs->buf); |
5264 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5265 | |
6d820c5c | 5266 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
5267 | { |
5268 | case PACKET_ERROR: | |
5269 | case PACKET_UNKNOWN: | |
5270 | return -1; | |
5271 | case PACKET_OK: | |
5272 | return 0; | |
5273 | } | |
8e65ff28 | 5274 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5275 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
5276 | } |
5277 | ||
d471ea57 | 5278 | |
3c3bea1c | 5279 | static int |
fba45db2 | 5280 | remote_remove_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 5281 | { |
d01949b6 | 5282 | struct remote_state *rs = get_remote_state (); |
e514a9d6 | 5283 | char *p; |
d471ea57 AC |
5284 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
5285 | ||
444abaca | 5286 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
5cffb350 | 5287 | return -1; |
802188a7 | 5288 | |
6d820c5c DJ |
5289 | sprintf (rs->buf, "z%x,", packet); |
5290 | p = strchr (rs->buf, '\0'); | |
96baa820 JM |
5291 | addr = remote_address_masked (addr); |
5292 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 5293 | sprintf (p, ",%x", len); |
6d820c5c DJ |
5294 | putpkt (rs->buf); |
5295 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5296 | |
6d820c5c | 5297 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
5298 | { |
5299 | case PACKET_ERROR: | |
5300 | case PACKET_UNKNOWN: | |
5301 | return -1; | |
5302 | case PACKET_OK: | |
5303 | return 0; | |
5304 | } | |
8e65ff28 | 5305 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5306 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
5307 | } |
5308 | ||
3c3bea1c | 5309 | |
501eef12 AC |
5310 | int remote_hw_watchpoint_limit = -1; |
5311 | int remote_hw_breakpoint_limit = -1; | |
d471ea57 | 5312 | |
b9362cc7 | 5313 | static int |
3c3bea1c | 5314 | remote_check_watch_resources (int type, int cnt, int ot) |
96baa820 | 5315 | { |
3c3bea1c GS |
5316 | if (type == bp_hardware_breakpoint) |
5317 | { | |
5318 | if (remote_hw_breakpoint_limit == 0) | |
5319 | return 0; | |
501eef12 AC |
5320 | else if (remote_hw_breakpoint_limit < 0) |
5321 | return 1; | |
3c3bea1c GS |
5322 | else if (cnt <= remote_hw_breakpoint_limit) |
5323 | return 1; | |
5324 | } | |
5325 | else | |
5326 | { | |
5327 | if (remote_hw_watchpoint_limit == 0) | |
5328 | return 0; | |
501eef12 AC |
5329 | else if (remote_hw_watchpoint_limit < 0) |
5330 | return 1; | |
3c3bea1c GS |
5331 | else if (ot) |
5332 | return -1; | |
5333 | else if (cnt <= remote_hw_watchpoint_limit) | |
5334 | return 1; | |
5335 | } | |
5336 | return -1; | |
5337 | } | |
5338 | ||
b9362cc7 | 5339 | static int |
3c3bea1c GS |
5340 | remote_stopped_by_watchpoint (void) |
5341 | { | |
5342 | return remote_stopped_by_watchpoint_p; | |
5343 | } | |
5344 | ||
7270d8f2 OF |
5345 | extern int stepped_after_stopped_by_watchpoint; |
5346 | ||
4aa7a7f5 JJ |
5347 | static int |
5348 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 5349 | { |
4aa7a7f5 | 5350 | int rc = 0; |
7270d8f2 OF |
5351 | if (remote_stopped_by_watchpoint () |
5352 | || stepped_after_stopped_by_watchpoint) | |
4aa7a7f5 JJ |
5353 | { |
5354 | *addr_p = remote_watch_data_address; | |
5355 | rc = 1; | |
5356 | } | |
5357 | ||
5358 | return rc; | |
3c3bea1c GS |
5359 | } |
5360 | ||
5361 | ||
5362 | static int | |
8181d85f | 5363 | remote_insert_hw_breakpoint (struct bp_target_info *bp_tgt) |
3c3bea1c | 5364 | { |
8181d85f | 5365 | CORE_ADDR addr; |
d01949b6 | 5366 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 5367 | char *p = rs->buf; |
802188a7 | 5368 | |
c8189ed1 | 5369 | /* The length field should be set to the size of a breakpoint |
8181d85f | 5370 | instruction, even though we aren't inserting one ourselves. */ |
c8189ed1 | 5371 | |
8181d85f | 5372 | BREAKPOINT_FROM_PC (&bp_tgt->placed_address, &bp_tgt->placed_size); |
3c3bea1c | 5373 | |
444abaca | 5374 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 5375 | return -1; |
2bc416ba | 5376 | |
96baa820 JM |
5377 | *(p++) = 'Z'; |
5378 | *(p++) = '1'; | |
5379 | *(p++) = ','; | |
802188a7 | 5380 | |
8181d85f | 5381 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 5382 | p += hexnumstr (p, (ULONGEST) addr); |
8181d85f | 5383 | sprintf (p, ",%x", bp_tgt->placed_size); |
96baa820 | 5384 | |
6d820c5c DJ |
5385 | putpkt (rs->buf); |
5386 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5387 | |
6d820c5c | 5388 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
5389 | { |
5390 | case PACKET_ERROR: | |
5391 | case PACKET_UNKNOWN: | |
5392 | return -1; | |
5393 | case PACKET_OK: | |
5394 | return 0; | |
5395 | } | |
8e65ff28 | 5396 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5397 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
5398 | } |
5399 | ||
d471ea57 | 5400 | |
802188a7 | 5401 | static int |
8181d85f | 5402 | remote_remove_hw_breakpoint (struct bp_target_info *bp_tgt) |
96baa820 | 5403 | { |
8181d85f | 5404 | CORE_ADDR addr; |
d01949b6 | 5405 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 5406 | char *p = rs->buf; |
c8189ed1 | 5407 | |
444abaca | 5408 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 5409 | return -1; |
802188a7 | 5410 | |
96baa820 JM |
5411 | *(p++) = 'z'; |
5412 | *(p++) = '1'; | |
5413 | *(p++) = ','; | |
802188a7 | 5414 | |
8181d85f | 5415 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 5416 | p += hexnumstr (p, (ULONGEST) addr); |
8181d85f | 5417 | sprintf (p, ",%x", bp_tgt->placed_size); |
96baa820 | 5418 | |
6d820c5c DJ |
5419 | putpkt (rs->buf); |
5420 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 5421 | |
6d820c5c | 5422 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
5423 | { |
5424 | case PACKET_ERROR: | |
5425 | case PACKET_UNKNOWN: | |
5426 | return -1; | |
5427 | case PACKET_OK: | |
5428 | return 0; | |
5429 | } | |
8e65ff28 | 5430 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5431 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 5432 | } |
96baa820 | 5433 | |
c906108c SS |
5434 | /* Some targets are only capable of doing downloads, and afterwards |
5435 | they switch to the remote serial protocol. This function provides | |
5436 | a clean way to get from the download target to the remote target. | |
5437 | It's basically just a wrapper so that we don't have to expose any | |
5438 | of the internal workings of remote.c. | |
5439 | ||
5440 | Prior to calling this routine, you should shutdown the current | |
5441 | target code, else you will get the "A program is being debugged | |
5442 | already..." message. Usually a call to pop_target() suffices. */ | |
5443 | ||
5444 | void | |
fba45db2 | 5445 | push_remote_target (char *name, int from_tty) |
c906108c | 5446 | { |
a3f17187 | 5447 | printf_filtered (_("Switching to remote protocol\n")); |
c906108c SS |
5448 | remote_open (name, from_tty); |
5449 | } | |
5450 | ||
23860348 | 5451 | /* Table used by the crc32 function to calcuate the checksum. */ |
c906108c | 5452 | |
c5aa993b JM |
5453 | static unsigned long crc32_table[256] = |
5454 | {0, 0}; | |
c906108c SS |
5455 | |
5456 | static unsigned long | |
fba45db2 | 5457 | crc32 (unsigned char *buf, int len, unsigned int crc) |
c906108c | 5458 | { |
c5aa993b | 5459 | if (!crc32_table[1]) |
c906108c | 5460 | { |
23860348 | 5461 | /* Initialize the CRC table and the decoding table. */ |
c906108c SS |
5462 | int i, j; |
5463 | unsigned int c; | |
5464 | ||
5465 | for (i = 0; i < 256; i++) | |
c5aa993b JM |
5466 | { |
5467 | for (c = i << 24, j = 8; j > 0; --j) | |
5468 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
5469 | crc32_table[i] = c; | |
5470 | } | |
c906108c SS |
5471 | } |
5472 | ||
5473 | while (len--) | |
5474 | { | |
5475 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |
5476 | buf++; | |
5477 | } | |
5478 | return crc; | |
5479 | } | |
5480 | ||
5481 | /* compare-sections command | |
5482 | ||
5483 | With no arguments, compares each loadable section in the exec bfd | |
5484 | with the same memory range on the target, and reports mismatches. | |
5485 | Useful for verifying the image on the target against the exec file. | |
5486 | Depends on the target understanding the new "qCRC:" request. */ | |
5487 | ||
e514a9d6 JM |
5488 | /* FIXME: cagney/1999-10-26: This command should be broken down into a |
5489 | target method (target verify memory) and generic version of the | |
5490 | actual command. This will allow other high-level code (especially | |
23860348 | 5491 | generic_load()) to make use of this target functionality. */ |
e514a9d6 | 5492 | |
c906108c | 5493 | static void |
fba45db2 | 5494 | compare_sections_command (char *args, int from_tty) |
c906108c | 5495 | { |
d01949b6 | 5496 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
5497 | asection *s; |
5498 | unsigned long host_crc, target_crc; | |
5499 | extern bfd *exec_bfd; | |
5500 | struct cleanup *old_chain; | |
085dd6e6 JM |
5501 | char *tmp; |
5502 | char *sectdata; | |
ce359b09 | 5503 | const char *sectname; |
c906108c SS |
5504 | bfd_size_type size; |
5505 | bfd_vma lma; | |
5506 | int matched = 0; | |
5507 | int mismatched = 0; | |
5508 | ||
5509 | if (!exec_bfd) | |
8a3fe4f8 | 5510 | error (_("command cannot be used without an exec file")); |
c906108c SS |
5511 | if (!current_target.to_shortname || |
5512 | strcmp (current_target.to_shortname, "remote") != 0) | |
8a3fe4f8 | 5513 | error (_("command can only be used with remote target")); |
c906108c | 5514 | |
c5aa993b | 5515 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
5516 | { |
5517 | if (!(s->flags & SEC_LOAD)) | |
c5aa993b | 5518 | continue; /* skip non-loadable section */ |
c906108c | 5519 | |
2c500098 | 5520 | size = bfd_get_section_size (s); |
c906108c | 5521 | if (size == 0) |
c5aa993b | 5522 | continue; /* skip zero-length section */ |
c906108c | 5523 | |
ce359b09 | 5524 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 5525 | if (args && strcmp (args, sectname) != 0) |
c5aa993b | 5526 | continue; /* not the section selected by user */ |
c906108c | 5527 | |
c5aa993b | 5528 | matched = 1; /* do this section */ |
c906108c | 5529 | lma = s->lma; |
23860348 | 5530 | /* FIXME: assumes lma can fit into long. */ |
ea9c271d | 5531 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", |
ecbc58df | 5532 | (long) lma, (long) size); |
6d820c5c | 5533 | putpkt (rs->buf); |
c906108c | 5534 | |
23860348 MS |
5535 | /* Be clever; compute the host_crc before waiting for target |
5536 | reply. */ | |
c906108c | 5537 | sectdata = xmalloc (size); |
b8c9b27d | 5538 | old_chain = make_cleanup (xfree, sectdata); |
c906108c SS |
5539 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
5540 | host_crc = crc32 ((unsigned char *) sectdata, size, 0xffffffff); | |
5541 | ||
6d820c5c DJ |
5542 | getpkt (&rs->buf, &rs->buf_size, 0); |
5543 | if (rs->buf[0] == 'E') | |
8a3fe4f8 | 5544 | error (_("target memory fault, section %s, range 0x%s -- 0x%s"), |
823ca731 | 5545 | sectname, paddr (lma), paddr (lma + size)); |
6d820c5c | 5546 | if (rs->buf[0] != 'C') |
8a3fe4f8 | 5547 | error (_("remote target does not support this operation")); |
c906108c | 5548 | |
6d820c5c | 5549 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) |
c906108c SS |
5550 | target_crc = target_crc * 16 + fromhex (*tmp); |
5551 | ||
d4f3574e SS |
5552 | printf_filtered ("Section %s, range 0x%s -- 0x%s: ", |
5553 | sectname, paddr (lma), paddr (lma + size)); | |
c906108c SS |
5554 | if (host_crc == target_crc) |
5555 | printf_filtered ("matched.\n"); | |
5556 | else | |
c5aa993b JM |
5557 | { |
5558 | printf_filtered ("MIS-MATCHED!\n"); | |
5559 | mismatched++; | |
5560 | } | |
c906108c SS |
5561 | |
5562 | do_cleanups (old_chain); | |
5563 | } | |
5564 | if (mismatched > 0) | |
8a3fe4f8 AC |
5565 | warning (_("One or more sections of the remote executable does not match\n\ |
5566 | the loaded file\n")); | |
c906108c | 5567 | if (args && !matched) |
a3f17187 | 5568 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
5569 | } |
5570 | ||
0876f84a DJ |
5571 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
5572 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
5573 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
5574 | The number of bytes read may be less than LEN without indicating an | |
5575 | EOF. PACKET is checked and updated to indicate whether the remote | |
5576 | target supports this object. */ | |
5577 | ||
5578 | static LONGEST | |
5579 | remote_read_qxfer (struct target_ops *ops, const char *object_name, | |
5580 | const char *annex, | |
5581 | gdb_byte *readbuf, ULONGEST offset, LONGEST len, | |
5582 | struct packet_config *packet) | |
5583 | { | |
5584 | static char *finished_object; | |
5585 | static char *finished_annex; | |
5586 | static ULONGEST finished_offset; | |
5587 | ||
5588 | struct remote_state *rs = get_remote_state (); | |
5589 | unsigned int total = 0; | |
5590 | LONGEST i, n, packet_len; | |
5591 | ||
5592 | if (packet->support == PACKET_DISABLE) | |
5593 | return -1; | |
5594 | ||
5595 | /* Check whether we've cached an end-of-object packet that matches | |
5596 | this request. */ | |
5597 | if (finished_object) | |
5598 | { | |
5599 | if (strcmp (object_name, finished_object) == 0 | |
5600 | && strcmp (annex ? annex : "", finished_annex) == 0 | |
5601 | && offset == finished_offset) | |
5602 | return 0; | |
5603 | ||
5604 | /* Otherwise, we're now reading something different. Discard | |
5605 | the cache. */ | |
5606 | xfree (finished_object); | |
5607 | xfree (finished_annex); | |
5608 | finished_object = NULL; | |
5609 | finished_annex = NULL; | |
5610 | } | |
5611 | ||
5612 | /* Request only enough to fit in a single packet. The actual data | |
5613 | may not, since we don't know how much of it will need to be escaped; | |
5614 | the target is free to respond with slightly less data. We subtract | |
5615 | five to account for the response type and the protocol frame. */ | |
5616 | n = min (get_remote_packet_size () - 5, len); | |
5617 | snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s", | |
5618 | object_name, annex ? annex : "", | |
5619 | phex_nz (offset, sizeof offset), | |
5620 | phex_nz (n, sizeof n)); | |
5621 | i = putpkt (rs->buf); | |
5622 | if (i < 0) | |
5623 | return -1; | |
5624 | ||
5625 | rs->buf[0] = '\0'; | |
5626 | packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
5627 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) | |
5628 | return -1; | |
5629 | ||
5630 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
5631 | error (_("Unknown remote qXfer reply: %s"), rs->buf); | |
5632 | ||
5633 | /* 'm' means there is (or at least might be) more data after this | |
5634 | batch. That does not make sense unless there's at least one byte | |
5635 | of data in this reply. */ | |
5636 | if (rs->buf[0] == 'm' && packet_len == 1) | |
5637 | error (_("Remote qXfer reply contained no data.")); | |
5638 | ||
5639 | /* Got some data. */ | |
5640 | i = remote_unescape_input (rs->buf + 1, packet_len - 1, readbuf, n); | |
5641 | ||
5642 | /* 'l' is an EOF marker, possibly including a final block of data, | |
5643 | or possibly empty. Record it to bypass the next read, if one is | |
5644 | issued. */ | |
5645 | if (rs->buf[0] == 'l') | |
5646 | { | |
5647 | finished_object = xstrdup (object_name); | |
5648 | finished_annex = xstrdup (annex ? annex : ""); | |
5649 | finished_offset = offset + i; | |
5650 | } | |
5651 | ||
5652 | return i; | |
5653 | } | |
5654 | ||
1e3ff5ad | 5655 | static LONGEST |
4b8a223f | 5656 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
961cb7b5 MK |
5657 | const char *annex, gdb_byte *readbuf, |
5658 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
c906108c | 5659 | { |
d01949b6 | 5660 | struct remote_state *rs = get_remote_state (); |
c906108c | 5661 | int i; |
6d820c5c | 5662 | char *p2; |
1e3ff5ad | 5663 | char query_type; |
c906108c | 5664 | |
b2182ed2 | 5665 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
5666 | if (object == TARGET_OBJECT_MEMORY) |
5667 | { | |
5668 | int xfered; | |
5669 | errno = 0; | |
5670 | ||
5671 | if (writebuf != NULL) | |
b2182ed2 | 5672 | xfered = remote_write_bytes (offset, writebuf, len); |
21e3b9b9 | 5673 | else |
b2182ed2 | 5674 | xfered = remote_read_bytes (offset, readbuf, len); |
21e3b9b9 DJ |
5675 | |
5676 | if (xfered > 0) | |
5677 | return xfered; | |
5678 | else if (xfered == 0 && errno == 0) | |
5679 | return 0; | |
5680 | else | |
5681 | return -1; | |
5682 | } | |
5683 | ||
a76d924d DJ |
5684 | /* Only handle flash writes. */ |
5685 | if (writebuf != NULL) | |
5686 | { | |
5687 | LONGEST xfered; | |
5688 | ||
5689 | switch (object) | |
5690 | { | |
5691 | case TARGET_OBJECT_FLASH: | |
5692 | xfered = remote_flash_write (ops, offset, len, writebuf); | |
5693 | ||
5694 | if (xfered > 0) | |
5695 | return xfered; | |
5696 | else if (xfered == 0 && errno == 0) | |
5697 | return 0; | |
5698 | else | |
5699 | return -1; | |
5700 | ||
5701 | default: | |
5702 | return -1; | |
5703 | } | |
5704 | } | |
4b8a223f | 5705 | |
1e3ff5ad AC |
5706 | /* Map pre-existing objects onto letters. DO NOT do this for new |
5707 | objects!!! Instead specify new query packets. */ | |
5708 | switch (object) | |
c906108c | 5709 | { |
1e3ff5ad AC |
5710 | case TARGET_OBJECT_AVR: |
5711 | query_type = 'R'; | |
5712 | break; | |
802188a7 RM |
5713 | |
5714 | case TARGET_OBJECT_AUXV: | |
0876f84a DJ |
5715 | gdb_assert (annex == NULL); |
5716 | return remote_read_qxfer (ops, "auxv", annex, readbuf, offset, len, | |
5717 | &remote_protocol_packets[PACKET_qXfer_auxv]); | |
802188a7 | 5718 | |
fd79ecee DJ |
5719 | case TARGET_OBJECT_MEMORY_MAP: |
5720 | gdb_assert (annex == NULL); | |
5721 | return remote_read_qxfer (ops, "memory-map", annex, readbuf, offset, len, | |
5722 | &remote_protocol_packets[PACKET_qXfer_memory_map]); | |
5723 | ||
1e3ff5ad | 5724 | default: |
c906108c SS |
5725 | return -1; |
5726 | } | |
5727 | ||
4b8a223f | 5728 | /* Note: a zero OFFSET and LEN can be used to query the minimum |
1e3ff5ad | 5729 | buffer size. */ |
4b8a223f | 5730 | if (offset == 0 && len == 0) |
ea9c271d DJ |
5731 | return (get_remote_packet_size ()); |
5732 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not | |
24b06219 | 5733 | large enough let the caller deal with it. */ |
ea9c271d | 5734 | if (len < get_remote_packet_size ()) |
1e3ff5ad | 5735 | return -1; |
ea9c271d | 5736 | len = get_remote_packet_size (); |
1e3ff5ad | 5737 | |
23860348 | 5738 | /* Except for querying the minimum buffer size, target must be open. */ |
c5aa993b | 5739 | if (!remote_desc) |
8a3fe4f8 | 5740 | error (_("remote query is only available after target open")); |
c906108c | 5741 | |
1e3ff5ad | 5742 | gdb_assert (annex != NULL); |
4b8a223f | 5743 | gdb_assert (readbuf != NULL); |
c906108c | 5744 | |
6d820c5c | 5745 | p2 = rs->buf; |
c906108c SS |
5746 | *p2++ = 'q'; |
5747 | *p2++ = query_type; | |
5748 | ||
23860348 MS |
5749 | /* We used one buffer char for the remote protocol q command and |
5750 | another for the query type. As the remote protocol encapsulation | |
5751 | uses 4 chars plus one extra in case we are debugging | |
5752 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
5753 | string. */ | |
c906108c | 5754 | i = 0; |
ea9c271d | 5755 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 5756 | { |
1e3ff5ad AC |
5757 | /* Bad caller may have sent forbidden characters. */ |
5758 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
5759 | *p2++ = annex[i]; | |
c906108c SS |
5760 | i++; |
5761 | } | |
1e3ff5ad AC |
5762 | *p2 = '\0'; |
5763 | gdb_assert (annex[i] == '\0'); | |
c906108c | 5764 | |
6d820c5c | 5765 | i = putpkt (rs->buf); |
c5aa993b JM |
5766 | if (i < 0) |
5767 | return i; | |
c906108c | 5768 | |
6d820c5c DJ |
5769 | getpkt (&rs->buf, &rs->buf_size, 0); |
5770 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 5771 | |
cfd77fa1 | 5772 | return strlen ((char *) readbuf); |
c906108c SS |
5773 | } |
5774 | ||
96baa820 JM |
5775 | static void |
5776 | remote_rcmd (char *command, | |
d9fcf2fb | 5777 | struct ui_file *outbuf) |
96baa820 | 5778 | { |
d01949b6 | 5779 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 5780 | char *p = rs->buf; |
96baa820 JM |
5781 | |
5782 | if (!remote_desc) | |
8a3fe4f8 | 5783 | error (_("remote rcmd is only available after target open")); |
96baa820 | 5784 | |
23860348 | 5785 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
5786 | if (command == NULL) |
5787 | command = ""; | |
5788 | ||
23860348 | 5789 | /* The query prefix. */ |
2e9f7625 DJ |
5790 | strcpy (rs->buf, "qRcmd,"); |
5791 | p = strchr (rs->buf, '\0'); | |
96baa820 | 5792 | |
2e9f7625 | 5793 | if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/) > get_remote_packet_size ()) |
8a3fe4f8 | 5794 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 5795 | |
23860348 | 5796 | /* Encode the actual command. */ |
cfd77fa1 | 5797 | bin2hex ((gdb_byte *) command, p, 0); |
96baa820 | 5798 | |
6d820c5c | 5799 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 5800 | error (_("Communication problem with target.")); |
96baa820 JM |
5801 | |
5802 | /* get/display the response */ | |
5803 | while (1) | |
5804 | { | |
2e9f7625 DJ |
5805 | char *buf; |
5806 | ||
23860348 | 5807 | /* XXX - see also tracepoint.c:remote_get_noisy_reply(). */ |
2e9f7625 | 5808 | rs->buf[0] = '\0'; |
6d820c5c | 5809 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 5810 | buf = rs->buf; |
96baa820 | 5811 | if (buf[0] == '\0') |
8a3fe4f8 | 5812 | error (_("Target does not support this command.")); |
96baa820 JM |
5813 | if (buf[0] == 'O' && buf[1] != 'K') |
5814 | { | |
23860348 | 5815 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
5816 | continue; |
5817 | } | |
5818 | if (strcmp (buf, "OK") == 0) | |
5819 | break; | |
7be570e7 JM |
5820 | if (strlen (buf) == 3 && buf[0] == 'E' |
5821 | && isdigit (buf[1]) && isdigit (buf[2])) | |
5822 | { | |
8a3fe4f8 | 5823 | error (_("Protocol error with Rcmd")); |
7be570e7 | 5824 | } |
96baa820 JM |
5825 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
5826 | { | |
5827 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
5828 | fputc_unfiltered (c, outbuf); | |
5829 | } | |
5830 | break; | |
5831 | } | |
5832 | } | |
5833 | ||
fd79ecee DJ |
5834 | static VEC(mem_region_s) * |
5835 | remote_memory_map (struct target_ops *ops) | |
5836 | { | |
5837 | VEC(mem_region_s) *result = NULL; | |
5838 | char *text = target_read_stralloc (¤t_target, | |
5839 | TARGET_OBJECT_MEMORY_MAP, NULL); | |
5840 | ||
5841 | if (text) | |
5842 | { | |
5843 | struct cleanup *back_to = make_cleanup (xfree, text); | |
5844 | result = parse_memory_map (text); | |
5845 | do_cleanups (back_to); | |
5846 | } | |
5847 | ||
5848 | return result; | |
5849 | } | |
5850 | ||
c906108c | 5851 | static void |
fba45db2 | 5852 | packet_command (char *args, int from_tty) |
c906108c | 5853 | { |
d01949b6 | 5854 | struct remote_state *rs = get_remote_state (); |
c906108c | 5855 | |
c5aa993b | 5856 | if (!remote_desc) |
8a3fe4f8 | 5857 | error (_("command can only be used with remote target")); |
c906108c | 5858 | |
c5aa993b | 5859 | if (!args) |
8a3fe4f8 | 5860 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
5861 | |
5862 | puts_filtered ("sending: "); | |
5863 | print_packet (args); | |
5864 | puts_filtered ("\n"); | |
5865 | putpkt (args); | |
5866 | ||
6d820c5c | 5867 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 5868 | puts_filtered ("received: "); |
6d820c5c | 5869 | print_packet (rs->buf); |
c906108c SS |
5870 | puts_filtered ("\n"); |
5871 | } | |
5872 | ||
5873 | #if 0 | |
23860348 | 5874 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 5875 | |
a14ed312 | 5876 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 5877 | |
a14ed312 | 5878 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 5879 | |
a14ed312 | 5880 | static void threadalive_test (char *cmd, int tty); |
c906108c | 5881 | |
a14ed312 | 5882 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 5883 | |
23860348 | 5884 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 5885 | |
a14ed312 | 5886 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 5887 | |
23860348 | 5888 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 5889 | |
a14ed312 | 5890 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 5891 | |
a14ed312 | 5892 | static void init_remote_threadtests (void); |
c906108c | 5893 | |
23860348 | 5894 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
5895 | |
5896 | static void | |
fba45db2 | 5897 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
5898 | { |
5899 | int sample_thread = SAMPLE_THREAD; | |
5900 | ||
a3f17187 | 5901 | printf_filtered (_("Remote threadset test\n")); |
c906108c SS |
5902 | set_thread (sample_thread, 1); |
5903 | } | |
5904 | ||
5905 | ||
5906 | static void | |
fba45db2 | 5907 | threadalive_test (char *cmd, int tty) |
c906108c SS |
5908 | { |
5909 | int sample_thread = SAMPLE_THREAD; | |
5910 | ||
39f77062 | 5911 | if (remote_thread_alive (pid_to_ptid (sample_thread))) |
c906108c SS |
5912 | printf_filtered ("PASS: Thread alive test\n"); |
5913 | else | |
5914 | printf_filtered ("FAIL: Thread alive test\n"); | |
5915 | } | |
5916 | ||
23860348 | 5917 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
5918 | |
5919 | void | |
fba45db2 | 5920 | output_threadid (char *title, threadref *ref) |
c906108c SS |
5921 | { |
5922 | char hexid[20]; | |
5923 | ||
23860348 | 5924 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
5925 | hexid[16] = 0; |
5926 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
5927 | } | |
5928 | ||
5929 | static void | |
fba45db2 | 5930 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
5931 | { |
5932 | int startflag = 1; | |
5933 | threadref nextthread; | |
5934 | int done, result_count; | |
5935 | threadref threadlist[3]; | |
5936 | ||
5937 | printf_filtered ("Remote Threadlist test\n"); | |
5938 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
5939 | &result_count, &threadlist[0])) | |
5940 | printf_filtered ("FAIL: threadlist test\n"); | |
5941 | else | |
5942 | { | |
5943 | threadref *scan = threadlist; | |
5944 | threadref *limit = scan + result_count; | |
5945 | ||
5946 | while (scan < limit) | |
5947 | output_threadid (" thread ", scan++); | |
5948 | } | |
5949 | } | |
5950 | ||
5951 | void | |
fba45db2 | 5952 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
5953 | { |
5954 | output_threadid ("Threadid: ", &info->threadid); | |
5955 | printf_filtered ("Name: %s\n ", info->shortname); | |
5956 | printf_filtered ("State: %s\n", info->display); | |
5957 | printf_filtered ("other: %s\n\n", info->more_display); | |
5958 | } | |
5959 | ||
5960 | int | |
fba45db2 | 5961 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
5962 | { |
5963 | int result; | |
5964 | int set; | |
5965 | struct gdb_ext_thread_info threadinfo; | |
5966 | ||
5967 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
5968 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
5969 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
5970 | display_thread_info (&threadinfo); | |
5971 | return result; | |
5972 | } | |
5973 | ||
5974 | static void | |
fba45db2 | 5975 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
5976 | { |
5977 | int athread = SAMPLE_THREAD; | |
5978 | threadref thread; | |
5979 | int set; | |
5980 | ||
5981 | int_to_threadref (&thread, athread); | |
5982 | printf_filtered ("Remote Threadinfo test\n"); | |
5983 | if (!get_and_display_threadinfo (&thread)) | |
5984 | printf_filtered ("FAIL cannot get thread info\n"); | |
5985 | } | |
5986 | ||
5987 | static int | |
fba45db2 | 5988 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
5989 | { |
5990 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
5991 | return get_and_display_threadinfo (ref); | |
5992 | } | |
5993 | ||
5994 | static void | |
fba45db2 | 5995 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
5996 | { |
5997 | printf_filtered ("Remote Threadlist update test\n"); | |
5998 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
5999 | } | |
6000 | ||
6001 | static void | |
6002 | init_remote_threadtests (void) | |
6003 | { | |
1bedd215 AC |
6004 | add_com ("tlist", class_obscure, threadlist_test_cmd, _("\ |
6005 | Fetch and print the remote list of thread identifiers, one pkt only")); | |
c906108c | 6006 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 6007 | _("Fetch and display info about one thread")); |
c906108c | 6008 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 6009 | _("Test setting to a different thread")); |
c906108c | 6010 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 6011 | _("Iterate through updating all remote thread info")); |
c906108c | 6012 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 6013 | _(" Remote thread alive test ")); |
c906108c SS |
6014 | } |
6015 | ||
6016 | #endif /* 0 */ | |
6017 | ||
f3fb8c85 MS |
6018 | /* Convert a thread ID to a string. Returns the string in a static |
6019 | buffer. */ | |
6020 | ||
6021 | static char * | |
39f77062 | 6022 | remote_pid_to_str (ptid_t ptid) |
f3fb8c85 | 6023 | { |
fd0a2a6f | 6024 | static char buf[32]; |
f3fb8c85 | 6025 | |
32a5b2f1 | 6026 | xsnprintf (buf, sizeof buf, "Thread %d", ptid_get_pid (ptid)); |
f3fb8c85 MS |
6027 | return buf; |
6028 | } | |
6029 | ||
38691318 KB |
6030 | /* Get the address of the thread local variable in OBJFILE which is |
6031 | stored at OFFSET within the thread local storage for thread PTID. */ | |
6032 | ||
6033 | static CORE_ADDR | |
6034 | remote_get_thread_local_address (ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
6035 | { | |
444abaca | 6036 | if (remote_protocol_packets[PACKET_qGetTLSAddr].support != PACKET_DISABLE) |
38691318 KB |
6037 | { |
6038 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 6039 | char *p = rs->buf; |
571dd617 | 6040 | enum packet_result result; |
38691318 KB |
6041 | |
6042 | strcpy (p, "qGetTLSAddr:"); | |
6043 | p += strlen (p); | |
6044 | p += hexnumstr (p, PIDGET (ptid)); | |
6045 | *p++ = ','; | |
6046 | p += hexnumstr (p, offset); | |
6047 | *p++ = ','; | |
6048 | p += hexnumstr (p, lm); | |
6049 | *p++ = '\0'; | |
6050 | ||
6d820c5c DJ |
6051 | putpkt (rs->buf); |
6052 | getpkt (&rs->buf, &rs->buf_size, 0); | |
6053 | result = packet_ok (rs->buf, &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 6054 | if (result == PACKET_OK) |
38691318 KB |
6055 | { |
6056 | ULONGEST result; | |
6057 | ||
6d820c5c | 6058 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
6059 | return result; |
6060 | } | |
571dd617 | 6061 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
6062 | throw_error (TLS_GENERIC_ERROR, |
6063 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 6064 | else |
109c3e39 AC |
6065 | throw_error (TLS_GENERIC_ERROR, |
6066 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
6067 | } |
6068 | else | |
109c3e39 AC |
6069 | throw_error (TLS_GENERIC_ERROR, |
6070 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
6071 | /* Not reached. */ |
6072 | return 0; | |
6073 | } | |
6074 | ||
29709017 DJ |
6075 | /* Support for inferring a target description based on the current |
6076 | architecture and the size of a 'g' packet. While the 'g' packet | |
6077 | can have any size (since optional registers can be left off the | |
6078 | end), some sizes are easily recognizable given knowledge of the | |
6079 | approximate architecture. */ | |
6080 | ||
6081 | struct remote_g_packet_guess | |
6082 | { | |
6083 | int bytes; | |
6084 | const struct target_desc *tdesc; | |
6085 | }; | |
6086 | typedef struct remote_g_packet_guess remote_g_packet_guess_s; | |
6087 | DEF_VEC_O(remote_g_packet_guess_s); | |
6088 | ||
6089 | struct remote_g_packet_data | |
6090 | { | |
6091 | VEC(remote_g_packet_guess_s) *guesses; | |
6092 | }; | |
6093 | ||
6094 | static struct gdbarch_data *remote_g_packet_data_handle; | |
6095 | ||
6096 | static void * | |
6097 | remote_g_packet_data_init (struct obstack *obstack) | |
6098 | { | |
6099 | return OBSTACK_ZALLOC (obstack, struct remote_g_packet_data); | |
6100 | } | |
6101 | ||
6102 | void | |
6103 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
6104 | const struct target_desc *tdesc) | |
6105 | { | |
6106 | struct remote_g_packet_data *data | |
6107 | = gdbarch_data (gdbarch, remote_g_packet_data_handle); | |
6108 | struct remote_g_packet_guess new_guess, *guess; | |
6109 | int ix; | |
6110 | ||
6111 | gdb_assert (tdesc != NULL); | |
6112 | ||
6113 | for (ix = 0; | |
6114 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
6115 | ix++) | |
6116 | if (guess->bytes == bytes) | |
6117 | internal_error (__FILE__, __LINE__, | |
6118 | "Duplicate g packet description added for size %d", | |
6119 | bytes); | |
6120 | ||
6121 | new_guess.bytes = bytes; | |
6122 | new_guess.tdesc = tdesc; | |
6123 | VEC_safe_push (remote_g_packet_guess_s, data->guesses, &new_guess); | |
6124 | } | |
6125 | ||
6126 | static const struct target_desc * | |
6127 | remote_read_description (struct target_ops *target) | |
6128 | { | |
6129 | struct remote_g_packet_data *data | |
6130 | = gdbarch_data (current_gdbarch, remote_g_packet_data_handle); | |
6131 | ||
6132 | if (!VEC_empty (remote_g_packet_guess_s, data->guesses)) | |
6133 | { | |
6134 | struct remote_g_packet_guess *guess; | |
6135 | int ix; | |
6136 | int bytes = send_g_packet (); | |
6137 | ||
6138 | for (ix = 0; | |
6139 | VEC_iterate (remote_g_packet_guess_s, data->guesses, ix, guess); | |
6140 | ix++) | |
6141 | if (guess->bytes == bytes) | |
6142 | return guess->tdesc; | |
6143 | ||
6144 | /* We discard the g packet. A minor optimization would be to | |
6145 | hold on to it, and fill the register cache once we have selected | |
6146 | an architecture, but it's too tricky to do safely. */ | |
6147 | } | |
6148 | ||
6149 | return NULL; | |
6150 | } | |
6151 | ||
c906108c | 6152 | static void |
fba45db2 | 6153 | init_remote_ops (void) |
c906108c | 6154 | { |
c5aa993b | 6155 | remote_ops.to_shortname = "remote"; |
c906108c | 6156 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 6157 | remote_ops.to_doc = |
c906108c | 6158 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
6159 | Specify the serial device it is connected to\n\ |
6160 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
6161 | remote_ops.to_open = remote_open; |
6162 | remote_ops.to_close = remote_close; | |
c906108c | 6163 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 6164 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 6165 | remote_ops.to_resume = remote_resume; |
c906108c SS |
6166 | remote_ops.to_wait = remote_wait; |
6167 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
6168 | remote_ops.to_store_registers = remote_store_registers; | |
6169 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 6170 | remote_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 6171 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
6172 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
6173 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
6174 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
6175 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
6176 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; | |
6177 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
6178 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
6179 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
6180 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b JM |
6181 | remote_ops.to_kill = remote_kill; |
6182 | remote_ops.to_load = generic_load; | |
c906108c SS |
6183 | remote_ops.to_mourn_inferior = remote_mourn; |
6184 | remote_ops.to_thread_alive = remote_thread_alive; | |
0f71a2f6 | 6185 | remote_ops.to_find_new_threads = remote_threads_info; |
0caabb7e | 6186 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 6187 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
c906108c | 6188 | remote_ops.to_stop = remote_stop; |
4b8a223f | 6189 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 6190 | remote_ops.to_rcmd = remote_rcmd; |
38691318 | 6191 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; |
c906108c | 6192 | remote_ops.to_stratum = process_stratum; |
c5aa993b JM |
6193 | remote_ops.to_has_all_memory = 1; |
6194 | remote_ops.to_has_memory = 1; | |
6195 | remote_ops.to_has_stack = 1; | |
6196 | remote_ops.to_has_registers = 1; | |
6197 | remote_ops.to_has_execution = 1; | |
6198 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
6199 | remote_ops.to_magic = OPS_MAGIC; | |
fd79ecee | 6200 | remote_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
6201 | remote_ops.to_flash_erase = remote_flash_erase; |
6202 | remote_ops.to_flash_done = remote_flash_done; | |
29709017 | 6203 | remote_ops.to_read_description = remote_read_description; |
c906108c SS |
6204 | } |
6205 | ||
6206 | /* Set up the extended remote vector by making a copy of the standard | |
6207 | remote vector and adding to it. */ | |
6208 | ||
6209 | static void | |
fba45db2 | 6210 | init_extended_remote_ops (void) |
c906108c SS |
6211 | { |
6212 | extended_remote_ops = remote_ops; | |
6213 | ||
0f71a2f6 | 6214 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 6215 | extended_remote_ops.to_longname = |
c906108c | 6216 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 6217 | extended_remote_ops.to_doc = |
c906108c SS |
6218 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
6219 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 6220 | extended_remote_ops.to_open = extended_remote_open; |
c906108c SS |
6221 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
6222 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
0f71a2f6 JM |
6223 | } |
6224 | ||
6426a772 JM |
6225 | static int |
6226 | remote_can_async_p (void) | |
6227 | { | |
23860348 | 6228 | /* We're async whenever the serial device is. */ |
2cd58942 | 6229 | return (current_target.to_async_mask_value) && serial_can_async_p (remote_desc); |
6426a772 JM |
6230 | } |
6231 | ||
6232 | static int | |
6233 | remote_is_async_p (void) | |
6234 | { | |
23860348 | 6235 | /* We're async whenever the serial device is. */ |
2cd58942 | 6236 | return (current_target.to_async_mask_value) && serial_is_async_p (remote_desc); |
6426a772 JM |
6237 | } |
6238 | ||
2acceee2 JM |
6239 | /* Pass the SERIAL event on and up to the client. One day this code |
6240 | will be able to delay notifying the client of an event until the | |
23860348 | 6241 | point where an entire packet has been received. */ |
2acceee2 | 6242 | |
2bc416ba | 6243 | static void (*async_client_callback) (enum inferior_event_type event_type, |
23860348 | 6244 | void *context); |
2acceee2 JM |
6245 | static void *async_client_context; |
6246 | static serial_event_ftype remote_async_serial_handler; | |
6247 | ||
6426a772 | 6248 | static void |
819cc324 | 6249 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 6250 | { |
2acceee2 JM |
6251 | /* Don't propogate error information up to the client. Instead let |
6252 | the client find out about the error by querying the target. */ | |
6253 | async_client_callback (INF_REG_EVENT, async_client_context); | |
6254 | } | |
6255 | ||
6256 | static void | |
2bc416ba | 6257 | remote_async (void (*callback) (enum inferior_event_type event_type, |
23860348 | 6258 | void *context), void *context) |
2acceee2 | 6259 | { |
ed9a39eb | 6260 | if (current_target.to_async_mask_value == 0) |
8e65ff28 | 6261 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 6262 | _("Calling remote_async when async is masked")); |
ed9a39eb | 6263 | |
2acceee2 JM |
6264 | if (callback != NULL) |
6265 | { | |
2cd58942 | 6266 | serial_async (remote_desc, remote_async_serial_handler, NULL); |
2acceee2 JM |
6267 | async_client_callback = callback; |
6268 | async_client_context = context; | |
6269 | } | |
6270 | else | |
2cd58942 | 6271 | serial_async (remote_desc, NULL, NULL); |
6426a772 JM |
6272 | } |
6273 | ||
43ff13b4 JM |
6274 | /* Target async and target extended-async. |
6275 | ||
6276 | This are temporary targets, until it is all tested. Eventually | |
6277 | async support will be incorporated int the usual 'remote' | |
23860348 | 6278 | target. */ |
43ff13b4 JM |
6279 | |
6280 | static void | |
c2d11a7d | 6281 | init_remote_async_ops (void) |
43ff13b4 JM |
6282 | { |
6283 | remote_async_ops.to_shortname = "async"; | |
2bc416ba | 6284 | remote_async_ops.to_longname = |
23860348 | 6285 | "Remote serial target in async version of the gdb-specific protocol"; |
c5aa993b | 6286 | remote_async_ops.to_doc = |
43ff13b4 JM |
6287 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
6288 | Specify the serial device it is connected to (e.g. /dev/ttya)."; | |
c5aa993b JM |
6289 | remote_async_ops.to_open = remote_async_open; |
6290 | remote_async_ops.to_close = remote_close; | |
6ad8ae5c DJ |
6291 | remote_async_ops.to_detach = remote_detach; |
6292 | remote_async_ops.to_disconnect = remote_disconnect; | |
c5aa993b JM |
6293 | remote_async_ops.to_resume = remote_async_resume; |
6294 | remote_async_ops.to_wait = remote_async_wait; | |
6295 | remote_async_ops.to_fetch_registers = remote_fetch_registers; | |
6296 | remote_async_ops.to_store_registers = remote_store_registers; | |
6297 | remote_async_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 6298 | remote_async_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 6299 | remote_async_ops.to_files_info = remote_files_info; |
43ff13b4 JM |
6300 | remote_async_ops.to_insert_breakpoint = remote_insert_breakpoint; |
6301 | remote_async_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
6302 | remote_async_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
6303 | remote_async_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
6304 | remote_async_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
6305 | remote_async_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
6306 | remote_async_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
6307 | remote_async_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; | |
6308 | remote_async_ops.to_stopped_data_address = remote_stopped_data_address; | |
6426a772 JM |
6309 | remote_async_ops.to_terminal_inferior = remote_async_terminal_inferior; |
6310 | remote_async_ops.to_terminal_ours = remote_async_terminal_ours; | |
c5aa993b JM |
6311 | remote_async_ops.to_kill = remote_async_kill; |
6312 | remote_async_ops.to_load = generic_load; | |
53a5351d | 6313 | remote_async_ops.to_mourn_inferior = remote_async_mourn; |
c5aa993b JM |
6314 | remote_async_ops.to_thread_alive = remote_thread_alive; |
6315 | remote_async_ops.to_find_new_threads = remote_threads_info; | |
cf759d3b ND |
6316 | remote_async_ops.to_pid_to_str = remote_pid_to_str; |
6317 | remote_async_ops.to_extra_thread_info = remote_threads_extra_info; | |
43ff13b4 | 6318 | remote_async_ops.to_stop = remote_stop; |
4b8a223f | 6319 | remote_async_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 6320 | remote_async_ops.to_rcmd = remote_rcmd; |
c5aa993b JM |
6321 | remote_async_ops.to_stratum = process_stratum; |
6322 | remote_async_ops.to_has_all_memory = 1; | |
6323 | remote_async_ops.to_has_memory = 1; | |
6324 | remote_async_ops.to_has_stack = 1; | |
6325 | remote_async_ops.to_has_registers = 1; | |
6326 | remote_async_ops.to_has_execution = 1; | |
6327 | remote_async_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
6426a772 JM |
6328 | remote_async_ops.to_can_async_p = remote_can_async_p; |
6329 | remote_async_ops.to_is_async_p = remote_is_async_p; | |
6330 | remote_async_ops.to_async = remote_async; | |
ed9a39eb | 6331 | remote_async_ops.to_async_mask_value = 1; |
c5aa993b | 6332 | remote_async_ops.to_magic = OPS_MAGIC; |
fd79ecee | 6333 | remote_async_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
6334 | remote_async_ops.to_flash_erase = remote_flash_erase; |
6335 | remote_async_ops.to_flash_done = remote_flash_done; | |
29709017 | 6336 | remote_ops.to_read_description = remote_read_description; |
43ff13b4 JM |
6337 | } |
6338 | ||
6339 | /* Set up the async extended remote vector by making a copy of the standard | |
6340 | remote vector and adding to it. */ | |
6341 | ||
6342 | static void | |
c2d11a7d | 6343 | init_extended_async_remote_ops (void) |
43ff13b4 JM |
6344 | { |
6345 | extended_async_remote_ops = remote_async_ops; | |
6346 | ||
6347 | extended_async_remote_ops.to_shortname = "extended-async"; | |
c5aa993b | 6348 | extended_async_remote_ops.to_longname = |
43ff13b4 | 6349 | "Extended remote serial target in async gdb-specific protocol"; |
c5aa993b | 6350 | extended_async_remote_ops.to_doc = |
43ff13b4 JM |
6351 | "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\ |
6352 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 6353 | extended_async_remote_ops.to_open = extended_remote_async_open; |
43ff13b4 JM |
6354 | extended_async_remote_ops.to_create_inferior = extended_remote_async_create_inferior; |
6355 | extended_async_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
6356 | } | |
6357 | ||
5a2468f5 | 6358 | static void |
c2d11a7d | 6359 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 6360 | { |
427c3a89 | 6361 | help_list (remote_set_cmdlist, "set remote ", -1, gdb_stdout); |
5a2468f5 JM |
6362 | } |
6363 | ||
d471ea57 AC |
6364 | static void |
6365 | show_remote_cmd (char *args, int from_tty) | |
6366 | { | |
37a105a1 | 6367 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 6368 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 DJ |
6369 | struct cleanup *showlist_chain; |
6370 | struct cmd_list_element *list = remote_show_cmdlist; | |
6371 | ||
6372 | showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist"); | |
6373 | for (; list != NULL; list = list->next) | |
6374 | if (strcmp (list->name, "Z-packet") == 0) | |
6375 | continue; | |
427c3a89 DJ |
6376 | else if (list->type == not_set_cmd) |
6377 | /* Alias commands are exactly like the original, except they | |
6378 | don't have the normal type. */ | |
6379 | continue; | |
6380 | else | |
37a105a1 DJ |
6381 | { |
6382 | struct cleanup *option_chain | |
6383 | = make_cleanup_ui_out_tuple_begin_end (uiout, "option"); | |
6384 | ui_out_field_string (uiout, "name", list->name); | |
6385 | ui_out_text (uiout, ": "); | |
427c3a89 DJ |
6386 | if (list->type == show_cmd) |
6387 | do_setshow_command ((char *) NULL, from_tty, list); | |
6388 | else | |
6389 | cmd_func (list, NULL, from_tty); | |
37a105a1 DJ |
6390 | /* Close the tuple. */ |
6391 | do_cleanups (option_chain); | |
6392 | } | |
427c3a89 DJ |
6393 | |
6394 | /* Close the tuple. */ | |
6395 | do_cleanups (showlist_chain); | |
d471ea57 | 6396 | } |
5a2468f5 | 6397 | |
0f71a2f6 | 6398 | static void |
fba45db2 | 6399 | build_remote_gdbarch_data (void) |
0f71a2f6 | 6400 | { |
d696208f | 6401 | remote_address_size = TARGET_ADDR_BIT; |
0f71a2f6 JM |
6402 | } |
6403 | ||
23860348 | 6404 | /* Saved pointer to previous owner of the new_objfile event. */ |
dc8acb97 MS |
6405 | static void (*remote_new_objfile_chain) (struct objfile *); |
6406 | ||
23860348 | 6407 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
6408 | static void |
6409 | remote_new_objfile (struct objfile *objfile) | |
6410 | { | |
23860348 | 6411 | if (remote_desc != 0) /* Have a remote connection. */ |
dc8acb97 MS |
6412 | { |
6413 | remote_check_symbols (objfile); | |
6414 | } | |
23860348 | 6415 | /* Call predecessor on chain, if any. */ |
f86172a5 | 6416 | if (remote_new_objfile_chain) |
dc8acb97 MS |
6417 | remote_new_objfile_chain (objfile); |
6418 | } | |
6419 | ||
c906108c | 6420 | void |
fba45db2 | 6421 | _initialize_remote (void) |
c906108c | 6422 | { |
ea9c271d DJ |
6423 | struct remote_state *rs; |
6424 | ||
0f71a2f6 | 6425 | /* architecture specific data */ |
2bc416ba | 6426 | remote_gdbarch_data_handle = |
23860348 | 6427 | gdbarch_data_register_post_init (init_remote_state); |
29709017 DJ |
6428 | remote_g_packet_data_handle = |
6429 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 AC |
6430 | |
6431 | /* Old tacky stuff. NOTE: This comes after the remote protocol so | |
6432 | that the remote protocol has been initialized. */ | |
046a4708 AC |
6433 | DEPRECATED_REGISTER_GDBARCH_SWAP (remote_address_size); |
6434 | deprecated_register_gdbarch_swap (NULL, 0, build_remote_gdbarch_data); | |
0f71a2f6 | 6435 | |
ea9c271d DJ |
6436 | /* Initialize the per-target state. At the moment there is only one |
6437 | of these, not one per target. Only one target is active at a | |
6438 | time. The default buffer size is unimportant; it will be expanded | |
6439 | whenever a larger buffer is needed. */ | |
0b83947e | 6440 | rs = get_remote_state_raw (); |
ea9c271d DJ |
6441 | rs->buf_size = 400; |
6442 | rs->buf = xmalloc (rs->buf_size); | |
6443 | ||
c906108c SS |
6444 | init_remote_ops (); |
6445 | add_target (&remote_ops); | |
6446 | ||
6447 | init_extended_remote_ops (); | |
6448 | add_target (&extended_remote_ops); | |
cce74817 | 6449 | |
43ff13b4 JM |
6450 | init_remote_async_ops (); |
6451 | add_target (&remote_async_ops); | |
6452 | ||
6453 | init_extended_async_remote_ops (); | |
6454 | add_target (&extended_async_remote_ops); | |
6455 | ||
dc8acb97 | 6456 | /* Hook into new objfile notification. */ |
9a4105ab AC |
6457 | remote_new_objfile_chain = deprecated_target_new_objfile_hook; |
6458 | deprecated_target_new_objfile_hook = remote_new_objfile; | |
dc8acb97 | 6459 | |
c906108c SS |
6460 | #if 0 |
6461 | init_remote_threadtests (); | |
6462 | #endif | |
6463 | ||
23860348 | 6464 | /* set/show remote ... */ |
d471ea57 | 6465 | |
1bedd215 | 6466 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
6467 | Remote protocol specific variables\n\ |
6468 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 6469 | the packets being used"), |
cff3e48b | 6470 | &remote_set_cmdlist, "set remote ", |
23860348 | 6471 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 6472 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
6473 | Remote protocol specific variables\n\ |
6474 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 6475 | the packets being used"), |
cff3e48b | 6476 | &remote_show_cmdlist, "show remote ", |
23860348 | 6477 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 6478 | |
1a966eab AC |
6479 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
6480 | Compare section data on target to the exec file.\n\ | |
6481 | Argument is a single section name (default: all loaded sections)."), | |
c906108c SS |
6482 | &cmdlist); |
6483 | ||
1a966eab AC |
6484 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
6485 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
6486 | maintenance packet TEXT\n\ |
6487 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
6488 | this command sends the string TEXT to the inferior, and displays the\n\ | |
6489 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 6490 | terminating `#' character and checksum."), |
c906108c SS |
6491 | &maintenancelist); |
6492 | ||
7915a72c AC |
6493 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
6494 | Set whether to send break if interrupted."), _("\ | |
6495 | Show whether to send break if interrupted."), _("\ | |
6496 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
2c5b56ce | 6497 | NULL, NULL, /* FIXME: i18n: Whether to send break if interrupted is %s. */ |
e707bbc2 | 6498 | &setlist, &showlist); |
c906108c | 6499 | |
23860348 | 6500 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 6501 | |
1a966eab AC |
6502 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
6503 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 6504 | &setlist); |
1a966eab AC |
6505 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
6506 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
6507 | &showlist); |
6508 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
6509 | set_memory_write_packet_size, _("\ |
6510 | Set the maximum number of bytes per memory-write packet.\n\ | |
6511 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
6512 | default packet size. The actual limit is further reduced\n\ | |
6513 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
6514 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
6515 | &remote_set_cmdlist); |
6516 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
6517 | set_memory_read_packet_size, _("\ |
6518 | Set the maximum number of bytes per memory-read packet.\n\ | |
6519 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
6520 | default packet size. The actual limit is further reduced\n\ | |
6521 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
6522 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
6523 | &remote_set_cmdlist); |
6524 | add_cmd ("memory-write-packet-size", no_class, | |
6525 | show_memory_write_packet_size, | |
1a966eab | 6526 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
6527 | &remote_show_cmdlist); |
6528 | add_cmd ("memory-read-packet-size", no_class, | |
6529 | show_memory_read_packet_size, | |
1a966eab | 6530 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 6531 | &remote_show_cmdlist); |
c906108c | 6532 | |
b3f42336 | 6533 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
6534 | &remote_hw_watchpoint_limit, _("\ |
6535 | Set the maximum number of target hardware watchpoints."), _("\ | |
6536 | Show the maximum number of target hardware watchpoints."), _("\ | |
6537 | Specify a negative limit for unlimited."), | |
2c5b56ce | 6538 | NULL, NULL, /* FIXME: i18n: The maximum number of target hardware watchpoints is %s. */ |
b3f42336 AC |
6539 | &remote_set_cmdlist, &remote_show_cmdlist); |
6540 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, | |
7915a72c AC |
6541 | &remote_hw_breakpoint_limit, _("\ |
6542 | Set the maximum number of target hardware breakpoints."), _("\ | |
6543 | Show the maximum number of target hardware breakpoints."), _("\ | |
6544 | Specify a negative limit for unlimited."), | |
2c5b56ce | 6545 | NULL, NULL, /* FIXME: i18n: The maximum number of target hardware breakpoints is %s. */ |
b3f42336 | 6546 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 6547 | |
4d28ad1e AC |
6548 | add_setshow_integer_cmd ("remoteaddresssize", class_obscure, |
6549 | &remote_address_size, _("\ | |
6550 | Set the maximum size of the address (in bits) in a memory packet."), _("\ | |
6551 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
6552 | NULL, | |
6553 | NULL, /* FIXME: i18n: */ | |
6554 | &setlist, &showlist); | |
c906108c | 6555 | |
444abaca | 6556 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 6557 | "X", "binary-download", 1); |
0f71a2f6 | 6558 | |
444abaca | 6559 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 6560 | "vCont", "verbose-resume", 0); |
506fb367 | 6561 | |
89be2091 DJ |
6562 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
6563 | "QPassSignals", "pass-signals", 0); | |
6564 | ||
444abaca | 6565 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 6566 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 6567 | |
444abaca | 6568 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 6569 | "P", "set-register", 1); |
d471ea57 | 6570 | |
444abaca | 6571 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 6572 | "p", "fetch-register", 1); |
b96ec7ac | 6573 | |
444abaca | 6574 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 6575 | "Z0", "software-breakpoint", 0); |
d471ea57 | 6576 | |
444abaca | 6577 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 6578 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 6579 | |
444abaca | 6580 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 6581 | "Z2", "write-watchpoint", 0); |
d471ea57 | 6582 | |
444abaca | 6583 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 6584 | "Z3", "read-watchpoint", 0); |
d471ea57 | 6585 | |
444abaca | 6586 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 6587 | "Z4", "access-watchpoint", 0); |
d471ea57 | 6588 | |
0876f84a DJ |
6589 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
6590 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 6591 | |
fd79ecee DJ |
6592 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
6593 | "qXfer:memory-map:read", "memory-map", 0); | |
6594 | ||
444abaca | 6595 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 6596 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
6597 | 0); |
6598 | ||
be2a5f71 DJ |
6599 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
6600 | "qSupported", "supported-packets", 0); | |
6601 | ||
37a105a1 DJ |
6602 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
6603 | Z sub-packet has its own set and show commands, but users may | |
6604 | have sets to this variable in their .gdbinit files (or in their | |
6605 | documentation). */ | |
e9e68a56 | 6606 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
6607 | &remote_Z_packet_detect, _("\ |
6608 | Set use of remote protocol `Z' packets"), _("\ | |
6609 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 6610 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 6611 | packets."), |
e9e68a56 | 6612 | set_remote_protocol_Z_packet_cmd, |
2c5b56ce | 6613 | show_remote_protocol_Z_packet_cmd, /* FIXME: i18n: Use of remote protocol `Z' packets is %s. */ |
e9e68a56 | 6614 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 CV |
6615 | |
6616 | /* Eventually initialize fileio. See fileio.c */ | |
6617 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
c906108c | 6618 | } |