Commit | Line | Data |
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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" | |
c906108c | 48 | |
7a292a7a | 49 | #include <ctype.h> |
9846de1b | 50 | #include <sys/time.h> |
c906108c | 51 | |
43ff13b4 | 52 | #include "event-loop.h" |
c2c6d25f | 53 | #include "event-top.h" |
2acceee2 | 54 | #include "inf-loop.h" |
43ff13b4 | 55 | |
c906108c SS |
56 | #include <signal.h> |
57 | #include "serial.h" | |
58 | ||
6240bebf MS |
59 | #include "gdbcore.h" /* for exec_bfd */ |
60 | ||
449092f6 CV |
61 | #include "remote-fileio.h" |
62 | ||
23860348 | 63 | /* Prototypes for local functions. */ |
6426a772 JM |
64 | static void cleanup_sigint_signal_handler (void *dummy); |
65 | static void initialize_sigint_signal_handler (void); | |
6d820c5c | 66 | static int getpkt_sane (char **buf, long *sizeof_buf, int forever); |
6426a772 | 67 | |
a14ed312 KB |
68 | static void handle_remote_sigint (int); |
69 | static void handle_remote_sigint_twice (int); | |
70 | static void async_remote_interrupt (gdb_client_data); | |
71 | void async_remote_interrupt_twice (gdb_client_data); | |
43ff13b4 | 72 | |
a14ed312 | 73 | static void build_remote_gdbarch_data (void); |
0f71a2f6 | 74 | |
a14ed312 | 75 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 76 | |
a14ed312 | 77 | static void remote_prepare_to_store (void); |
c906108c | 78 | |
a14ed312 | 79 | static void remote_fetch_registers (int regno); |
c906108c | 80 | |
39f77062 KB |
81 | static void remote_resume (ptid_t ptid, int step, |
82 | enum target_signal siggnal); | |
83 | static void remote_async_resume (ptid_t ptid, int step, | |
a14ed312 | 84 | enum target_signal siggnal); |
a14ed312 KB |
85 | static void remote_open (char *name, int from_tty); |
86 | static void remote_async_open (char *name, int from_tty); | |
c906108c | 87 | |
a14ed312 KB |
88 | static void extended_remote_open (char *name, int from_tty); |
89 | static void extended_remote_async_open (char *name, int from_tty); | |
c906108c | 90 | |
92d1e331 DJ |
91 | static void remote_open_1 (char *, int, struct target_ops *, int extended_p, |
92 | int async_p); | |
c906108c | 93 | |
a14ed312 | 94 | static void remote_close (int quitting); |
c906108c | 95 | |
a14ed312 | 96 | static void remote_store_registers (int regno); |
c906108c | 97 | |
a14ed312 KB |
98 | static void remote_mourn (void); |
99 | static void remote_async_mourn (void); | |
c906108c | 100 | |
a14ed312 | 101 | static void extended_remote_restart (void); |
c906108c | 102 | |
a14ed312 | 103 | static void extended_remote_mourn (void); |
c906108c | 104 | |
a14ed312 | 105 | static void remote_mourn_1 (struct target_ops *); |
c906108c | 106 | |
6d820c5c | 107 | static void remote_send (char **buf, long *sizeof_buf_p); |
c906108c | 108 | |
a14ed312 | 109 | static int readchar (int timeout); |
c906108c | 110 | |
39f77062 KB |
111 | static ptid_t remote_wait (ptid_t ptid, |
112 | struct target_waitstatus *status); | |
113 | static ptid_t remote_async_wait (ptid_t ptid, | |
114 | struct target_waitstatus *status); | |
c906108c | 115 | |
a14ed312 KB |
116 | static void remote_kill (void); |
117 | static void remote_async_kill (void); | |
c906108c | 118 | |
a14ed312 | 119 | static int tohex (int nib); |
c906108c | 120 | |
a14ed312 | 121 | static void remote_detach (char *args, int from_tty); |
c906108c | 122 | |
a14ed312 | 123 | static void remote_interrupt (int signo); |
c906108c | 124 | |
a14ed312 | 125 | static void remote_interrupt_twice (int signo); |
7a292a7a | 126 | |
a14ed312 | 127 | static void interrupt_query (void); |
c906108c | 128 | |
a14ed312 | 129 | static void set_thread (int, int); |
c906108c | 130 | |
39f77062 | 131 | static int remote_thread_alive (ptid_t); |
c906108c | 132 | |
a14ed312 | 133 | static void get_offsets (void); |
c906108c | 134 | |
6d820c5c DJ |
135 | static void skip_frame (void); |
136 | ||
137 | static long read_frame (char **buf_p, long *sizeof_buf); | |
c906108c | 138 | |
a14ed312 | 139 | static int hexnumlen (ULONGEST num); |
c906108c | 140 | |
a14ed312 | 141 | static void init_remote_ops (void); |
c906108c | 142 | |
a14ed312 | 143 | static void init_extended_remote_ops (void); |
c906108c | 144 | |
a14ed312 | 145 | static void remote_stop (void); |
c906108c | 146 | |
a14ed312 | 147 | static int ishex (int ch, int *val); |
c906108c | 148 | |
a14ed312 | 149 | static int stubhex (int ch); |
c906108c | 150 | |
a14ed312 | 151 | static int hexnumstr (char *, ULONGEST); |
c906108c | 152 | |
a14ed312 | 153 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 154 | |
a14ed312 | 155 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 156 | |
a14ed312 | 157 | static void print_packet (char *); |
c906108c | 158 | |
a14ed312 | 159 | static unsigned long crc32 (unsigned char *, int, unsigned int); |
c906108c | 160 | |
a14ed312 | 161 | static void compare_sections_command (char *, int); |
c906108c | 162 | |
a14ed312 | 163 | static void packet_command (char *, int); |
c906108c | 164 | |
a14ed312 | 165 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 166 | |
39f77062 | 167 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 168 | |
a14ed312 | 169 | static void remote_find_new_threads (void); |
c906108c | 170 | |
a14ed312 | 171 | static void record_currthread (int currthread); |
c906108c | 172 | |
30559e10 | 173 | static int fromhex (int a); |
c906108c | 174 | |
cfd77fa1 | 175 | static int hex2bin (const char *hex, gdb_byte *bin, int count); |
c906108c | 176 | |
cfd77fa1 | 177 | static int bin2hex (const gdb_byte *bin, char *hex, int count); |
234fa6d1 | 178 | |
a14ed312 | 179 | static int putpkt_binary (char *buf, int cnt); |
c906108c | 180 | |
a14ed312 | 181 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 182 | |
5a2468f5 | 183 | struct packet_config; |
5a2468f5 | 184 | |
a14ed312 | 185 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 186 | |
d471ea57 | 187 | static void update_packet_config (struct packet_config *config); |
5a2468f5 | 188 | |
bb572ddd DJ |
189 | static void set_remote_protocol_packet_cmd (char *args, int from_tty, |
190 | struct cmd_list_element *c); | |
191 | ||
192 | static void show_remote_protocol_packet_cmd (struct ui_file *file, | |
193 | int from_tty, | |
194 | struct cmd_list_element *c, | |
195 | const char *value); | |
196 | ||
a14ed312 | 197 | void _initialize_remote (void); |
c906108c | 198 | |
bb572ddd DJ |
199 | /* For "set remote" and "show remote". */ |
200 | ||
201 | static struct cmd_list_element *remote_set_cmdlist; | |
202 | static struct cmd_list_element *remote_show_cmdlist; | |
203 | ||
ea9c271d DJ |
204 | /* Description of the remote protocol state for the currently |
205 | connected target. This is per-target state, and independent of the | |
206 | selected architecture. */ | |
207 | ||
208 | struct remote_state | |
209 | { | |
210 | /* A buffer to use for incoming packets, and its current size. The | |
211 | buffer is grown dynamically for larger incoming packets. | |
212 | Outgoing packets may also be constructed in this buffer. | |
213 | BUF_SIZE is always at least REMOTE_PACKET_SIZE; | |
214 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing | |
215 | packets. */ | |
216 | char *buf; | |
217 | long buf_size; | |
be2a5f71 DJ |
218 | |
219 | /* If we negotiated packet size explicitly (and thus can bypass | |
220 | heuristics for the largest packet size that will not overflow | |
221 | a buffer in the stub), this will be set to that packet size. | |
222 | Otherwise zero, meaning to use the guessed size. */ | |
223 | long explicit_packet_size; | |
ea9c271d DJ |
224 | }; |
225 | ||
226 | /* This data could be associated with a target, but we do not always | |
227 | have access to the current target when we need it, so for now it is | |
228 | static. This will be fine for as long as only one target is in use | |
229 | at a time. */ | |
230 | static struct remote_state remote_state; | |
231 | ||
232 | static struct remote_state * | |
233 | get_remote_state (void) | |
234 | { | |
235 | return &remote_state; | |
236 | } | |
237 | ||
238 | /* Description of the remote protocol for a given architecture. */ | |
d01949b6 | 239 | |
ad10f812 AC |
240 | struct packet_reg |
241 | { | |
242 | long offset; /* Offset into G packet. */ | |
243 | long regnum; /* GDB's internal register number. */ | |
244 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 245 | int in_g_packet; /* Always part of G packet. */ |
23860348 MS |
246 | /* long size in bytes; == register_size (current_gdbarch, regnum); |
247 | at present. */ | |
ad10f812 AC |
248 | /* char *name; == REGISTER_NAME (regnum); at present. */ |
249 | }; | |
250 | ||
ea9c271d | 251 | struct remote_arch_state |
d01949b6 | 252 | { |
ad10f812 AC |
253 | /* Description of the remote protocol registers. */ |
254 | long sizeof_g_packet; | |
b323314b AC |
255 | |
256 | /* Description of the remote protocol registers indexed by REGNUM | |
257 | (making an array of NUM_REGS + NUM_PSEUDO_REGS in size). */ | |
258 | struct packet_reg *regs; | |
ad10f812 | 259 | |
d01949b6 AC |
260 | /* This is the size (in chars) of the first response to the ``g'' |
261 | packet. It is used as a heuristic when determining the maximum | |
262 | size of memory-read and memory-write packets. A target will | |
263 | typically only reserve a buffer large enough to hold the ``g'' | |
264 | packet. The size does not include packet overhead (headers and | |
23860348 | 265 | trailers). */ |
d01949b6 AC |
266 | long actual_register_packet_size; |
267 | ||
268 | /* This is the maximum size (in chars) of a non read/write packet. | |
23860348 | 269 | It is also used as a cap on the size of read/write packets. */ |
d01949b6 AC |
270 | long remote_packet_size; |
271 | }; | |
272 | ||
3c3bea1c | 273 | |
d01949b6 AC |
274 | /* Handle for retreving the remote protocol data from gdbarch. */ |
275 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
276 | ||
ea9c271d DJ |
277 | static struct remote_arch_state * |
278 | get_remote_arch_state (void) | |
d01949b6 | 279 | { |
451fbdda | 280 | return gdbarch_data (current_gdbarch, remote_gdbarch_data_handle); |
d01949b6 AC |
281 | } |
282 | ||
283 | static void * | |
284 | init_remote_state (struct gdbarch *gdbarch) | |
285 | { | |
286 | int regnum; | |
ea9c271d DJ |
287 | struct remote_state *rs = get_remote_state (); |
288 | struct remote_arch_state *rsa; | |
289 | ||
290 | rsa = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_arch_state); | |
d01949b6 | 291 | |
ea9c271d | 292 | rsa->sizeof_g_packet = 0; |
ad10f812 | 293 | |
b323314b | 294 | /* Assume a 1:1 regnum<->pnum table. */ |
ea9c271d DJ |
295 | rsa->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, NUM_REGS + NUM_PSEUDO_REGS, |
296 | struct packet_reg); | |
b323314b | 297 | for (regnum = 0; regnum < NUM_REGS + NUM_PSEUDO_REGS; regnum++) |
ad10f812 | 298 | { |
ea9c271d | 299 | struct packet_reg *r = &rsa->regs[regnum]; |
b323314b AC |
300 | r->pnum = regnum; |
301 | r->regnum = regnum; | |
62700349 | 302 | r->offset = DEPRECATED_REGISTER_BYTE (regnum); |
b323314b | 303 | r->in_g_packet = (regnum < NUM_REGS); |
ad10f812 | 304 | /* ...name = REGISTER_NAME (regnum); */ |
7d58c67d | 305 | |
23860348 | 306 | /* Compute packet size by accumulating the size of all registers. */ |
46845f5e | 307 | if (regnum < NUM_REGS) |
ea9c271d | 308 | rsa->sizeof_g_packet += register_size (current_gdbarch, regnum); |
ad10f812 AC |
309 | } |
310 | ||
d01949b6 AC |
311 | /* Default maximum number of characters in a packet body. Many |
312 | remote stubs have a hardwired buffer size of 400 bytes | |
313 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
314 | as the maximum packet-size to ensure that the packet and an extra | |
315 | NUL character can always fit in the buffer. This stops GDB | |
316 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d DJ |
317 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
318 | rsa->remote_packet_size = 400 - 1; | |
d01949b6 | 319 | |
ea9c271d DJ |
320 | /* This one is filled in when a ``g'' packet is received. */ |
321 | rsa->actual_register_packet_size = 0; | |
322 | ||
323 | /* Should rsa->sizeof_g_packet needs more space than the | |
ad10f812 AC |
324 | default, adjust the size accordingly. Remember that each byte is |
325 | encoded as two characters. 32 is the overhead for the packet | |
326 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 327 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 328 | little. */ |
ea9c271d DJ |
329 | if (rsa->sizeof_g_packet > ((rsa->remote_packet_size - 32) / 2)) |
330 | rsa->remote_packet_size = (rsa->sizeof_g_packet * 2 + 32); | |
802188a7 | 331 | |
ea9c271d DJ |
332 | /* Make sure that the packet buffer is plenty big enough for |
333 | this architecture. */ | |
334 | if (rs->buf_size < rsa->remote_packet_size) | |
335 | { | |
336 | rs->buf_size = 2 * rsa->remote_packet_size; | |
337 | rs->buf = xmalloc (rs->buf_size); | |
338 | } | |
6d820c5c | 339 | |
ea9c271d DJ |
340 | return rsa; |
341 | } | |
342 | ||
343 | /* Return the current allowed size of a remote packet. This is | |
344 | inferred from the current architecture, and should be used to | |
345 | limit the length of outgoing packets. */ | |
346 | static long | |
347 | get_remote_packet_size (void) | |
348 | { | |
be2a5f71 | 349 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
350 | struct remote_arch_state *rsa = get_remote_arch_state (); |
351 | ||
be2a5f71 DJ |
352 | if (rs->explicit_packet_size) |
353 | return rs->explicit_packet_size; | |
354 | ||
ea9c271d | 355 | return rsa->remote_packet_size; |
d01949b6 AC |
356 | } |
357 | ||
ad10f812 | 358 | static struct packet_reg * |
ea9c271d | 359 | packet_reg_from_regnum (struct remote_arch_state *rsa, long regnum) |
ad10f812 | 360 | { |
b323314b AC |
361 | if (regnum < 0 && regnum >= NUM_REGS + NUM_PSEUDO_REGS) |
362 | return NULL; | |
363 | else | |
ad10f812 | 364 | { |
ea9c271d | 365 | struct packet_reg *r = &rsa->regs[regnum]; |
b323314b AC |
366 | gdb_assert (r->regnum == regnum); |
367 | return r; | |
ad10f812 | 368 | } |
ad10f812 AC |
369 | } |
370 | ||
371 | static struct packet_reg * | |
ea9c271d | 372 | packet_reg_from_pnum (struct remote_arch_state *rsa, LONGEST pnum) |
ad10f812 | 373 | { |
b323314b AC |
374 | int i; |
375 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) | |
ad10f812 | 376 | { |
ea9c271d | 377 | struct packet_reg *r = &rsa->regs[i]; |
b323314b AC |
378 | if (r->pnum == pnum) |
379 | return r; | |
ad10f812 AC |
380 | } |
381 | return NULL; | |
d01949b6 AC |
382 | } |
383 | ||
3c3bea1c GS |
384 | /* FIXME: graces/2002-08-08: These variables should eventually be |
385 | bound to an instance of the target object (as in gdbarch-tdep()), | |
386 | when such a thing exists. */ | |
387 | ||
388 | /* This is set to the data address of the access causing the target | |
389 | to stop for a watchpoint. */ | |
390 | static CORE_ADDR remote_watch_data_address; | |
391 | ||
94e08568 | 392 | /* This is non-zero if target stopped for a watchpoint. */ |
3c3bea1c GS |
393 | static int remote_stopped_by_watchpoint_p; |
394 | ||
c906108c SS |
395 | static struct target_ops remote_ops; |
396 | ||
397 | static struct target_ops extended_remote_ops; | |
398 | ||
43ff13b4 | 399 | /* Temporary target ops. Just like the remote_ops and |
23860348 | 400 | extended_remote_ops, but with asynchronous support. */ |
43ff13b4 JM |
401 | static struct target_ops remote_async_ops; |
402 | ||
403 | static struct target_ops extended_async_remote_ops; | |
404 | ||
6426a772 JM |
405 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
406 | ``forever'' still use the normal timeout mechanism. This is | |
407 | currently used by the ASYNC code to guarentee that target reads | |
408 | during the initial connect always time-out. Once getpkt has been | |
409 | modified to return a timeout indication and, in turn | |
410 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 411 | this can go away. */ |
6426a772 JM |
412 | static int wait_forever_enabled_p = 1; |
413 | ||
414 | ||
c906108c SS |
415 | /* This variable chooses whether to send a ^C or a break when the user |
416 | requests program interruption. Although ^C is usually what remote | |
417 | systems expect, and that is the default here, sometimes a break is | |
418 | preferable instead. */ | |
419 | ||
420 | static int remote_break; | |
421 | ||
c906108c SS |
422 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
423 | remote_open knows that we don't have a file open when the program | |
424 | starts. */ | |
819cc324 | 425 | static struct serial *remote_desc = NULL; |
c906108c | 426 | |
c906108c SS |
427 | /* This variable sets the number of bits in an address that are to be |
428 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
429 | leading zeros, the entire address would be sent. This variable | |
430 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The | |
431 | initial implementation of remote.c restricted the address sent in | |
432 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
433 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
434 | address was never sent. Since fixing this bug may cause a break in | |
435 | some remote targets this variable is principly provided to | |
23860348 | 436 | facilitate backward compatibility. */ |
c906108c SS |
437 | |
438 | static int remote_address_size; | |
439 | ||
6426a772 JM |
440 | /* Tempoary to track who currently owns the terminal. See |
441 | target_async_terminal_* for more details. */ | |
442 | ||
443 | static int remote_async_terminal_ours_p; | |
444 | ||
11cf8741 | 445 | \f |
11cf8741 | 446 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
447 | memory read/write packet. MIN (rsa->remote_packet_size, |
448 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 449 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
450 | (speed up transfers). The variables ``preferred_*'' (the user |
451 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 452 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
453 | |
454 | struct memory_packet_config | |
455 | { | |
456 | char *name; | |
457 | long size; | |
458 | int fixed_p; | |
459 | }; | |
460 | ||
461 | /* Compute the current size of a read/write packet. Since this makes | |
462 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
463 | ||
464 | static long | |
465 | get_memory_packet_size (struct memory_packet_config *config) | |
466 | { | |
d01949b6 | 467 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
468 | struct remote_arch_state *rsa = get_remote_arch_state (); |
469 | ||
11cf8741 JM |
470 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk |
471 | law?) that some hosts don't cope very well with large alloca() | |
472 | calls. Eventually the alloca() code will be replaced by calls to | |
473 | xmalloc() and make_cleanups() allowing this restriction to either | |
23860348 | 474 | be lifted or removed. */ |
11cf8741 JM |
475 | #ifndef MAX_REMOTE_PACKET_SIZE |
476 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
477 | #endif | |
3de11b2e | 478 | /* NOTE: 20 ensures we can write at least one byte. */ |
11cf8741 | 479 | #ifndef MIN_REMOTE_PACKET_SIZE |
3de11b2e | 480 | #define MIN_REMOTE_PACKET_SIZE 20 |
11cf8741 JM |
481 | #endif |
482 | long what_they_get; | |
483 | if (config->fixed_p) | |
484 | { | |
485 | if (config->size <= 0) | |
486 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
487 | else | |
488 | what_they_get = config->size; | |
489 | } | |
490 | else | |
491 | { | |
ea9c271d | 492 | what_they_get = get_remote_packet_size (); |
23860348 | 493 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
494 | if (config->size > 0 |
495 | && what_they_get > config->size) | |
496 | what_they_get = config->size; | |
be2a5f71 DJ |
497 | |
498 | /* Limit it to the size of the targets ``g'' response unless we have | |
499 | permission from the stub to use a larger packet size. */ | |
500 | if (rs->explicit_packet_size == 0 | |
501 | && rsa->actual_register_packet_size > 0 | |
502 | && what_they_get > rsa->actual_register_packet_size) | |
503 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 JM |
504 | } |
505 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
506 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
507 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
508 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
6d820c5c DJ |
509 | |
510 | /* Make sure there is room in the global buffer for this packet | |
511 | (including its trailing NUL byte). */ | |
512 | if (rs->buf_size < what_they_get + 1) | |
513 | { | |
514 | rs->buf_size = 2 * what_they_get; | |
515 | rs->buf = xrealloc (rs->buf, 2 * what_they_get); | |
516 | } | |
517 | ||
11cf8741 JM |
518 | return what_they_get; |
519 | } | |
520 | ||
521 | /* Update the size of a read/write packet. If they user wants | |
23860348 | 522 | something really big then do a sanity check. */ |
11cf8741 JM |
523 | |
524 | static void | |
525 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
526 | { | |
527 | int fixed_p = config->fixed_p; | |
528 | long size = config->size; | |
529 | if (args == NULL) | |
8a3fe4f8 | 530 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
531 | else if (strcmp (args, "hard") == 0 |
532 | || strcmp (args, "fixed") == 0) | |
533 | fixed_p = 1; | |
534 | else if (strcmp (args, "soft") == 0 | |
535 | || strcmp (args, "limit") == 0) | |
536 | fixed_p = 0; | |
537 | else | |
538 | { | |
539 | char *end; | |
540 | size = strtoul (args, &end, 0); | |
541 | if (args == end) | |
8a3fe4f8 | 542 | error (_("Invalid %s (bad syntax)."), config->name); |
11cf8741 JM |
543 | #if 0 |
544 | /* Instead of explicitly capping the size of a packet to | |
545 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
546 | instead allowed to set the size to something arbitrarily | |
23860348 | 547 | large. */ |
11cf8741 | 548 | if (size > MAX_REMOTE_PACKET_SIZE) |
8a3fe4f8 | 549 | error (_("Invalid %s (too large)."), config->name); |
11cf8741 JM |
550 | #endif |
551 | } | |
23860348 | 552 | /* Extra checks? */ |
11cf8741 JM |
553 | if (fixed_p && !config->fixed_p) |
554 | { | |
e2e0b3e5 AC |
555 | if (! query (_("The target may not be able to correctly handle a %s\n" |
556 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 557 | config->name, size)) |
8a3fe4f8 | 558 | error (_("Packet size not changed.")); |
11cf8741 | 559 | } |
23860348 | 560 | /* Update the config. */ |
11cf8741 JM |
561 | config->fixed_p = fixed_p; |
562 | config->size = size; | |
563 | } | |
564 | ||
565 | static void | |
566 | show_memory_packet_size (struct memory_packet_config *config) | |
567 | { | |
a3f17187 | 568 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 569 | if (config->fixed_p) |
a3f17187 | 570 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
571 | get_memory_packet_size (config)); |
572 | else | |
a3f17187 | 573 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
574 | get_memory_packet_size (config)); |
575 | } | |
576 | ||
577 | static struct memory_packet_config memory_write_packet_config = | |
578 | { | |
579 | "memory-write-packet-size", | |
580 | }; | |
581 | ||
582 | static void | |
583 | set_memory_write_packet_size (char *args, int from_tty) | |
584 | { | |
585 | set_memory_packet_size (args, &memory_write_packet_config); | |
586 | } | |
587 | ||
588 | static void | |
589 | show_memory_write_packet_size (char *args, int from_tty) | |
590 | { | |
591 | show_memory_packet_size (&memory_write_packet_config); | |
592 | } | |
593 | ||
594 | static long | |
595 | get_memory_write_packet_size (void) | |
596 | { | |
597 | return get_memory_packet_size (&memory_write_packet_config); | |
598 | } | |
599 | ||
600 | static struct memory_packet_config memory_read_packet_config = | |
601 | { | |
602 | "memory-read-packet-size", | |
603 | }; | |
604 | ||
605 | static void | |
606 | set_memory_read_packet_size (char *args, int from_tty) | |
607 | { | |
608 | set_memory_packet_size (args, &memory_read_packet_config); | |
609 | } | |
610 | ||
611 | static void | |
612 | show_memory_read_packet_size (char *args, int from_tty) | |
613 | { | |
614 | show_memory_packet_size (&memory_read_packet_config); | |
615 | } | |
616 | ||
617 | static long | |
618 | get_memory_read_packet_size (void) | |
619 | { | |
620 | long size = get_memory_packet_size (&memory_read_packet_config); | |
621 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an | |
622 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
623 | increased beyond this. */ |
624 | if (size > get_remote_packet_size ()) | |
625 | size = get_remote_packet_size (); | |
11cf8741 JM |
626 | return size; |
627 | } | |
628 | ||
11cf8741 | 629 | \f |
5a2468f5 JM |
630 | /* Generic configuration support for packets the stub optionally |
631 | supports. Allows the user to specify the use of the packet as well | |
23860348 | 632 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
633 | |
634 | enum packet_support | |
635 | { | |
636 | PACKET_SUPPORT_UNKNOWN = 0, | |
637 | PACKET_ENABLE, | |
638 | PACKET_DISABLE | |
639 | }; | |
640 | ||
5a2468f5 JM |
641 | struct packet_config |
642 | { | |
bb572ddd DJ |
643 | const char *name; |
644 | const char *title; | |
7f19b9a2 | 645 | enum auto_boolean detect; |
5a2468f5 JM |
646 | enum packet_support support; |
647 | }; | |
648 | ||
d471ea57 | 649 | /* Analyze a packet's return value and update the packet config |
23860348 | 650 | accordingly. */ |
d471ea57 AC |
651 | |
652 | enum packet_result | |
653 | { | |
654 | PACKET_ERROR, | |
655 | PACKET_OK, | |
656 | PACKET_UNKNOWN | |
657 | }; | |
658 | ||
5a2468f5 | 659 | static void |
d471ea57 | 660 | update_packet_config (struct packet_config *config) |
5a2468f5 | 661 | { |
d471ea57 AC |
662 | switch (config->detect) |
663 | { | |
7f19b9a2 | 664 | case AUTO_BOOLEAN_TRUE: |
d471ea57 AC |
665 | config->support = PACKET_ENABLE; |
666 | break; | |
7f19b9a2 | 667 | case AUTO_BOOLEAN_FALSE: |
d471ea57 AC |
668 | config->support = PACKET_DISABLE; |
669 | break; | |
7f19b9a2 | 670 | case AUTO_BOOLEAN_AUTO: |
d471ea57 AC |
671 | config->support = PACKET_SUPPORT_UNKNOWN; |
672 | break; | |
673 | } | |
5a2468f5 JM |
674 | } |
675 | ||
676 | static void | |
fba45db2 | 677 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
678 | { |
679 | char *support = "internal-error"; | |
680 | switch (config->support) | |
681 | { | |
682 | case PACKET_ENABLE: | |
683 | support = "enabled"; | |
684 | break; | |
685 | case PACKET_DISABLE: | |
686 | support = "disabled"; | |
687 | break; | |
688 | case PACKET_SUPPORT_UNKNOWN: | |
689 | support = "unknown"; | |
690 | break; | |
691 | } | |
692 | switch (config->detect) | |
693 | { | |
7f19b9a2 | 694 | case AUTO_BOOLEAN_AUTO: |
37a105a1 DJ |
695 | printf_filtered (_("Support for the `%s' packet is auto-detected, currently %s.\n"), |
696 | config->name, support); | |
5a2468f5 | 697 | break; |
7f19b9a2 AC |
698 | case AUTO_BOOLEAN_TRUE: |
699 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
700 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
701 | config->name, support); | |
8e248173 | 702 | break; |
5a2468f5 JM |
703 | } |
704 | } | |
705 | ||
706 | static void | |
bb572ddd DJ |
707 | add_packet_config_cmd (struct packet_config *config, const char *name, |
708 | const char *title, int legacy) | |
d471ea57 | 709 | { |
5a2468f5 JM |
710 | char *set_doc; |
711 | char *show_doc; | |
d471ea57 | 712 | char *cmd_name; |
3ed07be4 | 713 | |
5a2468f5 JM |
714 | config->name = name; |
715 | config->title = title; | |
7f19b9a2 | 716 | config->detect = AUTO_BOOLEAN_AUTO; |
8e248173 | 717 | config->support = PACKET_SUPPORT_UNKNOWN; |
b435e160 AC |
718 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
719 | name, title); | |
720 | show_doc = xstrprintf ("Show current use of remote protocol `%s' (%s) packet", | |
721 | name, title); | |
d471ea57 | 722 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 723 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 724 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
2c5b56ce | 725 | &config->detect, set_doc, show_doc, NULL, /* help_doc */ |
bb572ddd DJ |
726 | set_remote_protocol_packet_cmd, |
727 | show_remote_protocol_packet_cmd, | |
728 | &remote_set_cmdlist, &remote_show_cmdlist); | |
23860348 | 729 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
730 | if (legacy) |
731 | { | |
732 | char *legacy_name; | |
b435e160 | 733 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 734 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 735 | &remote_set_cmdlist); |
d471ea57 | 736 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 737 | &remote_show_cmdlist); |
d471ea57 | 738 | } |
5a2468f5 JM |
739 | } |
740 | ||
d471ea57 AC |
741 | static enum packet_result |
742 | packet_ok (const char *buf, struct packet_config *config) | |
5a2468f5 | 743 | { |
d471ea57 | 744 | if (buf[0] != '\0') |
5a2468f5 | 745 | { |
d471ea57 | 746 | /* The stub recognized the packet request. Check that the |
23860348 | 747 | operation succeeded. */ |
d471ea57 AC |
748 | switch (config->support) |
749 | { | |
750 | case PACKET_SUPPORT_UNKNOWN: | |
751 | if (remote_debug) | |
752 | fprintf_unfiltered (gdb_stdlog, | |
753 | "Packet %s (%s) is supported\n", | |
754 | config->name, config->title); | |
755 | config->support = PACKET_ENABLE; | |
756 | break; | |
757 | case PACKET_DISABLE: | |
8e65ff28 | 758 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 759 | _("packet_ok: attempt to use a disabled packet")); |
d471ea57 AC |
760 | break; |
761 | case PACKET_ENABLE: | |
762 | break; | |
763 | } | |
764 | if (buf[0] == 'O' && buf[1] == 'K' && buf[2] == '\0') | |
23860348 | 765 | /* "OK" - definitly OK. */ |
d471ea57 AC |
766 | return PACKET_OK; |
767 | if (buf[0] == 'E' | |
768 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
769 | && buf[3] == '\0') | |
23860348 | 770 | /* "Enn" - definitly an error. */ |
d471ea57 | 771 | return PACKET_ERROR; |
23860348 | 772 | /* The packet may or may not be OK. Just assume it is. */ |
d471ea57 AC |
773 | return PACKET_OK; |
774 | } | |
775 | else | |
776 | { | |
23860348 | 777 | /* The stub does not support the packet. */ |
d471ea57 AC |
778 | switch (config->support) |
779 | { | |
780 | case PACKET_ENABLE: | |
7f19b9a2 | 781 | if (config->detect == AUTO_BOOLEAN_AUTO) |
d471ea57 | 782 | /* If the stub previously indicated that the packet was |
23860348 | 783 | supported then there is a protocol error.. */ |
8a3fe4f8 | 784 | error (_("Protocol error: %s (%s) conflicting enabled responses."), |
d471ea57 AC |
785 | config->name, config->title); |
786 | else | |
23860348 | 787 | /* The user set it wrong. */ |
8a3fe4f8 | 788 | error (_("Enabled packet %s (%s) not recognized by stub"), |
d471ea57 AC |
789 | config->name, config->title); |
790 | break; | |
791 | case PACKET_SUPPORT_UNKNOWN: | |
792 | if (remote_debug) | |
793 | fprintf_unfiltered (gdb_stdlog, | |
794 | "Packet %s (%s) is NOT supported\n", | |
795 | config->name, config->title); | |
796 | config->support = PACKET_DISABLE; | |
797 | break; | |
798 | case PACKET_DISABLE: | |
799 | break; | |
800 | } | |
801 | return PACKET_UNKNOWN; | |
5a2468f5 JM |
802 | } |
803 | } | |
804 | ||
444abaca DJ |
805 | enum { |
806 | PACKET_vCont = 0, | |
807 | PACKET_X, | |
808 | PACKET_qSymbol, | |
809 | PACKET_P, | |
810 | PACKET_p, | |
811 | PACKET_Z0, | |
812 | PACKET_Z1, | |
813 | PACKET_Z2, | |
814 | PACKET_Z3, | |
815 | PACKET_Z4, | |
816 | PACKET_qPart_auxv, | |
817 | PACKET_qGetTLSAddr, | |
be2a5f71 | 818 | PACKET_qSupported, |
444abaca DJ |
819 | PACKET_MAX |
820 | }; | |
506fb367 | 821 | |
444abaca | 822 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 MS |
823 | |
824 | static void | |
444abaca DJ |
825 | set_remote_protocol_packet_cmd (char *args, int from_tty, |
826 | struct cmd_list_element *c) | |
dc8acb97 | 827 | { |
444abaca | 828 | struct packet_config *packet; |
dc8acb97 | 829 | |
444abaca DJ |
830 | for (packet = remote_protocol_packets; |
831 | packet < &remote_protocol_packets[PACKET_MAX]; | |
832 | packet++) | |
833 | { | |
834 | if (&packet->detect == c->var) | |
835 | { | |
836 | update_packet_config (packet); | |
837 | return; | |
838 | } | |
839 | } | |
840 | internal_error (__FILE__, __LINE__, "Could not find config for %s", | |
841 | c->name); | |
dc8acb97 MS |
842 | } |
843 | ||
5a2468f5 | 844 | static void |
444abaca DJ |
845 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
846 | struct cmd_list_element *c, | |
847 | const char *value) | |
5a2468f5 | 848 | { |
444abaca | 849 | struct packet_config *packet; |
5a2468f5 | 850 | |
444abaca DJ |
851 | for (packet = remote_protocol_packets; |
852 | packet < &remote_protocol_packets[PACKET_MAX]; | |
853 | packet++) | |
854 | { | |
855 | if (&packet->detect == c->var) | |
856 | { | |
857 | show_packet_config_cmd (packet); | |
858 | return; | |
859 | } | |
860 | } | |
861 | internal_error (__FILE__, __LINE__, "Could not find config for %s", | |
862 | c->name); | |
5a2468f5 JM |
863 | } |
864 | ||
d471ea57 AC |
865 | /* Should we try one of the 'Z' requests? */ |
866 | ||
867 | enum Z_packet_type | |
868 | { | |
869 | Z_PACKET_SOFTWARE_BP, | |
870 | Z_PACKET_HARDWARE_BP, | |
871 | Z_PACKET_WRITE_WP, | |
872 | Z_PACKET_READ_WP, | |
873 | Z_PACKET_ACCESS_WP, | |
874 | NR_Z_PACKET_TYPES | |
875 | }; | |
96baa820 | 876 | |
d471ea57 | 877 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 878 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 879 | |
7f19b9a2 | 880 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
881 | |
882 | static void | |
fba45db2 KB |
883 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
884 | struct cmd_list_element *c) | |
96baa820 | 885 | { |
d471ea57 AC |
886 | int i; |
887 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
888 | { | |
444abaca DJ |
889 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
890 | update_packet_config (&remote_protocol_packets[PACKET_Z0 + i]); | |
d471ea57 | 891 | } |
96baa820 JM |
892 | } |
893 | ||
894 | static void | |
08546159 AC |
895 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
896 | struct cmd_list_element *c, | |
897 | const char *value) | |
96baa820 | 898 | { |
d471ea57 AC |
899 | int i; |
900 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
901 | { | |
444abaca | 902 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 903 | } |
96baa820 JM |
904 | } |
905 | ||
9d1f7ab2 MS |
906 | /* Should we try the 'ThreadInfo' query packet? |
907 | ||
908 | This variable (NOT available to the user: auto-detect only!) | |
909 | determines whether GDB will use the new, simpler "ThreadInfo" | |
910 | query or the older, more complex syntax for thread queries. | |
802188a7 | 911 | This is an auto-detect variable (set to true at each connect, |
9d1f7ab2 MS |
912 | and set to false when the target fails to recognize it). */ |
913 | ||
914 | static int use_threadinfo_query; | |
915 | static int use_threadextra_query; | |
916 | ||
23860348 | 917 | /* Tokens for use by the asynchronous signal handlers for SIGINT. */ |
ae44c0c4 AC |
918 | static void *sigint_remote_twice_token; |
919 | static void *sigint_remote_token; | |
43ff13b4 | 920 | |
c906108c SS |
921 | /* These are pointers to hook functions that may be set in order to |
922 | modify resume/wait behavior for a particular architecture. */ | |
923 | ||
9a4105ab AC |
924 | void (*deprecated_target_resume_hook) (void); |
925 | void (*deprecated_target_wait_loop_hook) (void); | |
c906108c SS |
926 | \f |
927 | ||
c5aa993b | 928 | |
c906108c SS |
929 | /* These are the threads which we last sent to the remote system. |
930 | -1 for all or -2 for not sent yet. */ | |
931 | static int general_thread; | |
cce74817 | 932 | static int continue_thread; |
c906108c SS |
933 | |
934 | /* Call this function as a result of | |
935 | 1) A halt indication (T packet) containing a thread id | |
936 | 2) A direct query of currthread | |
937 | 3) Successful execution of set thread | |
938 | */ | |
939 | ||
940 | static void | |
fba45db2 | 941 | record_currthread (int currthread) |
c906108c | 942 | { |
c906108c | 943 | general_thread = currthread; |
cce74817 | 944 | |
c906108c SS |
945 | /* If this is a new thread, add it to GDB's thread list. |
946 | If we leave it up to WFI to do this, bad things will happen. */ | |
39f77062 | 947 | if (!in_thread_list (pid_to_ptid (currthread))) |
0f71a2f6 | 948 | { |
39f77062 | 949 | add_thread (pid_to_ptid (currthread)); |
8b93c638 | 950 | ui_out_text (uiout, "[New "); |
39f77062 | 951 | ui_out_text (uiout, target_pid_to_str (pid_to_ptid (currthread))); |
8b93c638 | 952 | ui_out_text (uiout, "]\n"); |
0f71a2f6 | 953 | } |
c906108c SS |
954 | } |
955 | ||
956 | #define MAGIC_NULL_PID 42000 | |
957 | ||
958 | static void | |
fba45db2 | 959 | set_thread (int th, int gen) |
c906108c | 960 | { |
d01949b6 | 961 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 962 | char *buf = rs->buf; |
cce74817 | 963 | int state = gen ? general_thread : continue_thread; |
c906108c SS |
964 | |
965 | if (state == th) | |
966 | return; | |
967 | ||
968 | buf[0] = 'H'; | |
969 | buf[1] = gen ? 'g' : 'c'; | |
970 | if (th == MAGIC_NULL_PID) | |
971 | { | |
972 | buf[2] = '0'; | |
973 | buf[3] = '\0'; | |
974 | } | |
975 | else if (th < 0) | |
ea9c271d | 976 | xsnprintf (&buf[2], get_remote_packet_size () - 2, "-%x", -th); |
c906108c | 977 | else |
ea9c271d | 978 | xsnprintf (&buf[2], get_remote_packet_size () - 2, "%x", th); |
c906108c | 979 | putpkt (buf); |
6d820c5c | 980 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 981 | if (gen) |
c5aa993b | 982 | general_thread = th; |
c906108c | 983 | else |
cce74817 | 984 | continue_thread = th; |
c906108c SS |
985 | } |
986 | \f | |
987 | /* Return nonzero if the thread TH is still alive on the remote system. */ | |
988 | ||
989 | static int | |
39f77062 | 990 | remote_thread_alive (ptid_t ptid) |
c906108c | 991 | { |
6d820c5c | 992 | struct remote_state *rs = get_remote_state (); |
39f77062 | 993 | int tid = PIDGET (ptid); |
6d820c5c | 994 | char *buf = rs->buf; |
c906108c | 995 | |
cce74817 | 996 | if (tid < 0) |
ea9c271d | 997 | xsnprintf (buf, get_remote_packet_size (), "T-%08x", -tid); |
c906108c | 998 | else |
ea9c271d | 999 | xsnprintf (buf, get_remote_packet_size (), "T%08x", tid); |
c906108c | 1000 | putpkt (buf); |
6d820c5c | 1001 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c SS |
1002 | return (buf[0] == 'O' && buf[1] == 'K'); |
1003 | } | |
1004 | ||
1005 | /* About these extended threadlist and threadinfo packets. They are | |
1006 | variable length packets but, the fields within them are often fixed | |
1007 | length. They are redundent enough to send over UDP as is the | |
1008 | remote protocol in general. There is a matching unit test module | |
1009 | in libstub. */ | |
1010 | ||
cce74817 JM |
1011 | #define OPAQUETHREADBYTES 8 |
1012 | ||
1013 | /* a 64 bit opaque identifier */ | |
1014 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
1015 | ||
23860348 MS |
1016 | /* WARNING: This threadref data structure comes from the remote O.S., |
1017 | libstub protocol encoding, and remote.c. it is not particularly | |
1018 | changable. */ | |
cce74817 JM |
1019 | |
1020 | /* Right now, the internal structure is int. We want it to be bigger. | |
1021 | Plan to fix this. | |
c5aa993b | 1022 | */ |
cce74817 | 1023 | |
23860348 | 1024 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 1025 | |
9d1f7ab2 | 1026 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 1027 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
1028 | |
1029 | struct gdb_ext_thread_info | |
c5aa993b | 1030 | { |
23860348 MS |
1031 | threadref threadid; /* External form of thread reference. */ |
1032 | int active; /* Has state interesting to GDB? | |
1033 | regs, stack. */ | |
1034 | char display[256]; /* Brief state display, name, | |
cedea757 | 1035 | blocked/suspended. */ |
23860348 MS |
1036 | char shortname[32]; /* To be used to name threads. */ |
1037 | char more_display[256]; /* Long info, statistics, queue depth, | |
1038 | whatever. */ | |
c5aa993b | 1039 | }; |
cce74817 JM |
1040 | |
1041 | /* The volume of remote transfers can be limited by submitting | |
1042 | a mask containing bits specifying the desired information. | |
1043 | Use a union of these values as the 'selection' parameter to | |
1044 | get_thread_info. FIXME: Make these TAG names more thread specific. | |
c5aa993b | 1045 | */ |
cce74817 JM |
1046 | |
1047 | #define TAG_THREADID 1 | |
1048 | #define TAG_EXISTS 2 | |
1049 | #define TAG_DISPLAY 4 | |
1050 | #define TAG_THREADNAME 8 | |
c5aa993b | 1051 | #define TAG_MOREDISPLAY 16 |
cce74817 | 1052 | |
23860348 | 1053 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 1054 | |
b2dd6311 | 1055 | char *unpack_varlen_hex (char *buff, ULONGEST *result); |
cce74817 | 1056 | |
a14ed312 | 1057 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 1058 | |
a14ed312 | 1059 | static char *pack_nibble (char *buf, int nibble); |
cce74817 | 1060 | |
23860348 | 1061 | static char *pack_hex_byte (char *pkt, int /* unsigned char */ byte); |
cce74817 | 1062 | |
a14ed312 | 1063 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 1064 | |
a14ed312 | 1065 | static char *pack_int (char *buf, int value); |
cce74817 | 1066 | |
a14ed312 | 1067 | static char *unpack_int (char *buf, int *value); |
cce74817 | 1068 | |
a14ed312 | 1069 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 1070 | |
23860348 | 1071 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 1072 | |
23860348 | 1073 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 1074 | |
23860348 | 1075 | void int_to_threadref (threadref *id, int value); |
cce74817 | 1076 | |
23860348 | 1077 | static int threadref_to_int (threadref *ref); |
cce74817 | 1078 | |
23860348 | 1079 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 1080 | |
23860348 | 1081 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 1082 | |
23860348 MS |
1083 | static char *pack_threadinfo_request (char *pkt, int mode, |
1084 | threadref *id); | |
cce74817 | 1085 | |
a14ed312 | 1086 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 1087 | threadref *expectedref, |
a14ed312 KB |
1088 | struct gdb_ext_thread_info |
1089 | *info); | |
cce74817 JM |
1090 | |
1091 | ||
23860348 MS |
1092 | static int remote_get_threadinfo (threadref *threadid, |
1093 | int fieldset, /*TAG mask */ | |
a14ed312 | 1094 | struct gdb_ext_thread_info *info); |
cce74817 | 1095 | |
a14ed312 KB |
1096 | static char *pack_threadlist_request (char *pkt, int startflag, |
1097 | int threadcount, | |
23860348 | 1098 | threadref *nextthread); |
cce74817 | 1099 | |
a14ed312 KB |
1100 | static int parse_threadlist_response (char *pkt, |
1101 | int result_limit, | |
23860348 MS |
1102 | threadref *original_echo, |
1103 | threadref *resultlist, | |
1104 | int *doneflag); | |
cce74817 | 1105 | |
a14ed312 | 1106 | static int remote_get_threadlist (int startflag, |
23860348 | 1107 | threadref *nextthread, |
a14ed312 KB |
1108 | int result_limit, |
1109 | int *done, | |
23860348 MS |
1110 | int *result_count, |
1111 | threadref *threadlist); | |
cce74817 | 1112 | |
23860348 | 1113 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 1114 | |
a14ed312 KB |
1115 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
1116 | void *context, int looplimit); | |
cce74817 | 1117 | |
23860348 | 1118 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 1119 | |
23860348 | 1120 | /* Encode 64 bits in 16 chars of hex. */ |
c906108c SS |
1121 | |
1122 | static const char hexchars[] = "0123456789abcdef"; | |
1123 | ||
1124 | static int | |
fba45db2 | 1125 | ishex (int ch, int *val) |
c906108c SS |
1126 | { |
1127 | if ((ch >= 'a') && (ch <= 'f')) | |
1128 | { | |
1129 | *val = ch - 'a' + 10; | |
1130 | return 1; | |
1131 | } | |
1132 | if ((ch >= 'A') && (ch <= 'F')) | |
1133 | { | |
1134 | *val = ch - 'A' + 10; | |
1135 | return 1; | |
1136 | } | |
1137 | if ((ch >= '0') && (ch <= '9')) | |
1138 | { | |
1139 | *val = ch - '0'; | |
1140 | return 1; | |
1141 | } | |
1142 | return 0; | |
1143 | } | |
1144 | ||
1145 | static int | |
fba45db2 | 1146 | stubhex (int ch) |
c906108c SS |
1147 | { |
1148 | if (ch >= 'a' && ch <= 'f') | |
1149 | return ch - 'a' + 10; | |
1150 | if (ch >= '0' && ch <= '9') | |
1151 | return ch - '0'; | |
1152 | if (ch >= 'A' && ch <= 'F') | |
1153 | return ch - 'A' + 10; | |
1154 | return -1; | |
1155 | } | |
1156 | ||
1157 | static int | |
fba45db2 | 1158 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
1159 | { |
1160 | int nibble; | |
1161 | int retval = 0; | |
1162 | ||
1163 | while (fieldlength) | |
1164 | { | |
1165 | nibble = stubhex (*buff++); | |
1166 | retval |= nibble; | |
1167 | fieldlength--; | |
1168 | if (fieldlength) | |
1169 | retval = retval << 4; | |
1170 | } | |
1171 | return retval; | |
1172 | } | |
1173 | ||
1174 | char * | |
fba45db2 | 1175 | unpack_varlen_hex (char *buff, /* packet to parse */ |
b2dd6311 | 1176 | ULONGEST *result) |
c906108c SS |
1177 | { |
1178 | int nibble; | |
1179 | int retval = 0; | |
1180 | ||
1181 | while (ishex (*buff, &nibble)) | |
1182 | { | |
1183 | buff++; | |
1184 | retval = retval << 4; | |
1185 | retval |= nibble & 0x0f; | |
1186 | } | |
1187 | *result = retval; | |
1188 | return buff; | |
1189 | } | |
1190 | ||
1191 | static char * | |
fba45db2 | 1192 | unpack_nibble (char *buf, int *val) |
c906108c SS |
1193 | { |
1194 | ishex (*buf++, val); | |
1195 | return buf; | |
1196 | } | |
1197 | ||
1198 | static char * | |
fba45db2 | 1199 | pack_nibble (char *buf, int nibble) |
c906108c SS |
1200 | { |
1201 | *buf++ = hexchars[(nibble & 0x0f)]; | |
1202 | return buf; | |
1203 | } | |
1204 | ||
1205 | static char * | |
fba45db2 | 1206 | pack_hex_byte (char *pkt, int byte) |
c906108c SS |
1207 | { |
1208 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
1209 | *pkt++ = hexchars[(byte & 0xf)]; | |
1210 | return pkt; | |
1211 | } | |
1212 | ||
1213 | static char * | |
fba45db2 | 1214 | unpack_byte (char *buf, int *value) |
c906108c SS |
1215 | { |
1216 | *value = stub_unpack_int (buf, 2); | |
1217 | return buf + 2; | |
1218 | } | |
1219 | ||
1220 | static char * | |
fba45db2 | 1221 | pack_int (char *buf, int value) |
c906108c SS |
1222 | { |
1223 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
1224 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
1225 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
1226 | buf = pack_hex_byte (buf, (value & 0xff)); | |
1227 | return buf; | |
1228 | } | |
1229 | ||
1230 | static char * | |
fba45db2 | 1231 | unpack_int (char *buf, int *value) |
c906108c SS |
1232 | { |
1233 | *value = stub_unpack_int (buf, 8); | |
1234 | return buf + 8; | |
1235 | } | |
1236 | ||
23860348 | 1237 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 1238 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
1239 | |
1240 | static char * | |
fba45db2 | 1241 | pack_string (char *pkt, char *string) |
c906108c SS |
1242 | { |
1243 | char ch; | |
1244 | int len; | |
1245 | ||
1246 | len = strlen (string); | |
1247 | if (len > 200) | |
23860348 | 1248 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
1249 | pkt = pack_hex_byte (pkt, len); |
1250 | while (len-- > 0) | |
1251 | { | |
1252 | ch = *string++; | |
1253 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 1254 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
1255 | *pkt++ = ch; |
1256 | } | |
1257 | return pkt; | |
1258 | } | |
1259 | #endif /* 0 (unused) */ | |
1260 | ||
1261 | static char * | |
fba45db2 | 1262 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
1263 | { |
1264 | while (length--) | |
1265 | *dest++ = *src++; | |
1266 | *dest = '\0'; | |
1267 | return src; | |
1268 | } | |
1269 | ||
1270 | static char * | |
fba45db2 | 1271 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
1272 | { |
1273 | char *limit; | |
1274 | unsigned char *altid; | |
1275 | ||
1276 | altid = (unsigned char *) id; | |
1277 | limit = pkt + BUF_THREAD_ID_SIZE; | |
1278 | while (pkt < limit) | |
1279 | pkt = pack_hex_byte (pkt, *altid++); | |
1280 | return pkt; | |
1281 | } | |
1282 | ||
1283 | ||
1284 | static char * | |
fba45db2 | 1285 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
1286 | { |
1287 | char *altref; | |
1288 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
1289 | int x, y; | |
1290 | ||
1291 | altref = (char *) id; | |
1292 | ||
1293 | while (inbuf < limit) | |
1294 | { | |
1295 | x = stubhex (*inbuf++); | |
1296 | y = stubhex (*inbuf++); | |
1297 | *altref++ = (x << 4) | y; | |
1298 | } | |
1299 | return inbuf; | |
1300 | } | |
1301 | ||
1302 | /* Externally, threadrefs are 64 bits but internally, they are still | |
1303 | ints. This is due to a mismatch of specifications. We would like | |
1304 | to use 64bit thread references internally. This is an adapter | |
1305 | function. */ | |
1306 | ||
1307 | void | |
fba45db2 | 1308 | int_to_threadref (threadref *id, int value) |
c906108c SS |
1309 | { |
1310 | unsigned char *scan; | |
1311 | ||
1312 | scan = (unsigned char *) id; | |
1313 | { | |
1314 | int i = 4; | |
1315 | while (i--) | |
1316 | *scan++ = 0; | |
1317 | } | |
1318 | *scan++ = (value >> 24) & 0xff; | |
1319 | *scan++ = (value >> 16) & 0xff; | |
1320 | *scan++ = (value >> 8) & 0xff; | |
1321 | *scan++ = (value & 0xff); | |
1322 | } | |
1323 | ||
1324 | static int | |
fba45db2 | 1325 | threadref_to_int (threadref *ref) |
c906108c SS |
1326 | { |
1327 | int i, value = 0; | |
1328 | unsigned char *scan; | |
1329 | ||
cfd77fa1 | 1330 | scan = *ref; |
c906108c SS |
1331 | scan += 4; |
1332 | i = 4; | |
1333 | while (i-- > 0) | |
1334 | value = (value << 8) | ((*scan++) & 0xff); | |
1335 | return value; | |
1336 | } | |
1337 | ||
1338 | static void | |
fba45db2 | 1339 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
1340 | { |
1341 | int i; | |
1342 | unsigned char *csrc, *cdest; | |
1343 | ||
1344 | csrc = (unsigned char *) src; | |
1345 | cdest = (unsigned char *) dest; | |
1346 | i = 8; | |
1347 | while (i--) | |
1348 | *cdest++ = *csrc++; | |
1349 | } | |
1350 | ||
1351 | static int | |
fba45db2 | 1352 | threadmatch (threadref *dest, threadref *src) |
c906108c | 1353 | { |
23860348 | 1354 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
1355 | #if 0 |
1356 | unsigned char *srcp, *destp; | |
1357 | int i, result; | |
1358 | srcp = (char *) src; | |
1359 | destp = (char *) dest; | |
1360 | ||
1361 | result = 1; | |
1362 | while (i-- > 0) | |
1363 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
1364 | return result; | |
1365 | #endif | |
1366 | return 1; | |
1367 | } | |
1368 | ||
1369 | /* | |
c5aa993b JM |
1370 | threadid:1, # always request threadid |
1371 | context_exists:2, | |
1372 | display:4, | |
1373 | unique_name:8, | |
1374 | more_display:16 | |
1375 | */ | |
c906108c SS |
1376 | |
1377 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
1378 | ||
1379 | static char * | |
fba45db2 | 1380 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 1381 | { |
23860348 MS |
1382 | *pkt++ = 'q'; /* Info Query */ |
1383 | *pkt++ = 'P'; /* process or thread info */ | |
1384 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 1385 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 1386 | *pkt = '\0'; /* terminate */ |
c906108c SS |
1387 | return pkt; |
1388 | } | |
1389 | ||
23860348 | 1390 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 1391 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 1392 | add more fields as time goes by. */ |
c906108c | 1393 | |
23860348 | 1394 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 1395 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 1396 | fetch registers and its stack? */ |
c5aa993b | 1397 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 1398 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 1399 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 1400 | the process. */ |
c906108c SS |
1401 | |
1402 | static int | |
fba45db2 KB |
1403 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
1404 | struct gdb_ext_thread_info *info) | |
c906108c | 1405 | { |
d01949b6 | 1406 | struct remote_state *rs = get_remote_state (); |
c906108c | 1407 | int mask, length; |
cfd77fa1 | 1408 | int tag; |
c906108c | 1409 | threadref ref; |
6d820c5c | 1410 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
1411 | int retval = 1; |
1412 | ||
23860348 | 1413 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
1414 | info->active = 0; |
1415 | info->display[0] = '\0'; | |
1416 | info->shortname[0] = '\0'; | |
1417 | info->more_display[0] = '\0'; | |
1418 | ||
23860348 MS |
1419 | /* Assume the characters indicating the packet type have been |
1420 | stripped. */ | |
c906108c SS |
1421 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
1422 | pkt = unpack_threadid (pkt, &ref); | |
1423 | ||
1424 | if (mask == 0) | |
8a3fe4f8 | 1425 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 1426 | if (!threadmatch (&ref, expectedref)) |
23860348 | 1427 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 1428 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
1429 | return 0; |
1430 | } | |
1431 | copy_threadref (&info->threadid, &ref); | |
1432 | ||
23860348 | 1433 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 1434 | |
23860348 MS |
1435 | /* Packets are terminated with nulls. */ |
1436 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
1437 | { |
1438 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
1439 | pkt = unpack_byte (pkt, &length); /* length */ |
1440 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 1441 | { |
8a3fe4f8 | 1442 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
1443 | retval = 0; |
1444 | break; | |
1445 | } | |
1446 | if (tag == TAG_THREADID) | |
1447 | { | |
1448 | if (length != 16) | |
1449 | { | |
8a3fe4f8 | 1450 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
1451 | retval = 0; |
1452 | break; | |
1453 | } | |
1454 | pkt = unpack_threadid (pkt, &ref); | |
1455 | mask = mask & ~TAG_THREADID; | |
1456 | continue; | |
1457 | } | |
1458 | if (tag == TAG_EXISTS) | |
1459 | { | |
1460 | info->active = stub_unpack_int (pkt, length); | |
1461 | pkt += length; | |
1462 | mask = mask & ~(TAG_EXISTS); | |
1463 | if (length > 8) | |
1464 | { | |
8a3fe4f8 | 1465 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
1466 | retval = 0; |
1467 | break; | |
1468 | } | |
1469 | continue; | |
1470 | } | |
1471 | if (tag == TAG_THREADNAME) | |
1472 | { | |
1473 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
1474 | mask = mask & ~TAG_THREADNAME; | |
1475 | continue; | |
1476 | } | |
1477 | if (tag == TAG_DISPLAY) | |
1478 | { | |
1479 | pkt = unpack_string (pkt, &info->display[0], length); | |
1480 | mask = mask & ~TAG_DISPLAY; | |
1481 | continue; | |
1482 | } | |
1483 | if (tag == TAG_MOREDISPLAY) | |
1484 | { | |
1485 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
1486 | mask = mask & ~TAG_MOREDISPLAY; | |
1487 | continue; | |
1488 | } | |
8a3fe4f8 | 1489 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 1490 | break; /* Not a tag we know about. */ |
c906108c SS |
1491 | } |
1492 | return retval; | |
1493 | } | |
1494 | ||
1495 | static int | |
fba45db2 KB |
1496 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
1497 | struct gdb_ext_thread_info *info) | |
c906108c | 1498 | { |
d01949b6 | 1499 | struct remote_state *rs = get_remote_state (); |
c906108c | 1500 | int result; |
6d820c5c | 1501 | char *threadinfo_pkt = rs->buf; |
c906108c SS |
1502 | |
1503 | pack_threadinfo_request (threadinfo_pkt, fieldset, threadid); | |
1504 | putpkt (threadinfo_pkt); | |
6d820c5c | 1505 | getpkt (&rs->buf, &rs->buf_size, 0); |
23860348 MS |
1506 | result = remote_unpack_thread_info_response (threadinfo_pkt + 2, |
1507 | threadid, info); | |
c906108c SS |
1508 | return result; |
1509 | } | |
1510 | ||
c906108c SS |
1511 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
1512 | ||
1513 | static char * | |
fba45db2 KB |
1514 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
1515 | threadref *nextthread) | |
c906108c SS |
1516 | { |
1517 | *pkt++ = 'q'; /* info query packet */ | |
1518 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 1519 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
1520 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
1521 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
1522 | *pkt = '\0'; | |
1523 | return pkt; | |
1524 | } | |
1525 | ||
1526 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
1527 | ||
1528 | static int | |
fba45db2 KB |
1529 | parse_threadlist_response (char *pkt, int result_limit, |
1530 | threadref *original_echo, threadref *resultlist, | |
1531 | int *doneflag) | |
c906108c | 1532 | { |
d01949b6 | 1533 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1534 | char *limit; |
1535 | int count, resultcount, done; | |
1536 | ||
1537 | resultcount = 0; | |
1538 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 1539 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 1540 | /* done parse past here */ |
c906108c SS |
1541 | pkt = unpack_byte (pkt, &count); /* count field */ |
1542 | pkt = unpack_nibble (pkt, &done); | |
1543 | /* The first threadid is the argument threadid. */ | |
1544 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
1545 | while ((count-- > 0) && (pkt < limit)) | |
1546 | { | |
1547 | pkt = unpack_threadid (pkt, resultlist++); | |
1548 | if (resultcount++ >= result_limit) | |
1549 | break; | |
1550 | } | |
1551 | if (doneflag) | |
1552 | *doneflag = done; | |
1553 | return resultcount; | |
1554 | } | |
1555 | ||
1556 | static int | |
fba45db2 KB |
1557 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
1558 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 1559 | { |
d01949b6 | 1560 | struct remote_state *rs = get_remote_state (); |
c906108c | 1561 | static threadref echo_nextthread; |
6d820c5c | 1562 | char *threadlist_packet = rs->buf; |
c906108c SS |
1563 | int result = 1; |
1564 | ||
23860348 | 1565 | /* Trancate result limit to be smaller than the packet size. */ |
ea9c271d DJ |
1566 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) >= get_remote_packet_size ()) |
1567 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; | |
c906108c | 1568 | |
6d820c5c DJ |
1569 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
1570 | putpkt (rs->buf); | |
1571 | getpkt (&rs->buf, &rs->buf_size, 0); | |
c906108c SS |
1572 | |
1573 | *result_count = | |
6d820c5c | 1574 | parse_threadlist_response (rs->buf + 2, result_limit, &echo_nextthread, |
c906108c SS |
1575 | threadlist, done); |
1576 | ||
1577 | if (!threadmatch (&echo_nextthread, nextthread)) | |
1578 | { | |
23860348 MS |
1579 | /* FIXME: This is a good reason to drop the packet. */ |
1580 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
1581 | /* Possabilities : |
1582 | retransmit immediatly - race conditions | |
1583 | retransmit after timeout - yes | |
1584 | exit | |
1585 | wait for packet, then exit | |
1586 | */ | |
8a3fe4f8 | 1587 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 1588 | return 0; /* I choose simply exiting. */ |
c906108c SS |
1589 | } |
1590 | if (*result_count <= 0) | |
1591 | { | |
1592 | if (*done != 1) | |
1593 | { | |
8a3fe4f8 | 1594 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
1595 | result = 0; |
1596 | } | |
1597 | return result; /* break; */ | |
1598 | } | |
1599 | if (*result_count > result_limit) | |
1600 | { | |
1601 | *result_count = 0; | |
8a3fe4f8 | 1602 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
1603 | return 0; |
1604 | } | |
1605 | return result; | |
1606 | } | |
1607 | ||
23860348 MS |
1608 | /* This is the interface between remote and threads, remotes upper |
1609 | interface. */ | |
c906108c SS |
1610 | |
1611 | /* remote_find_new_threads retrieves the thread list and for each | |
1612 | thread in the list, looks up the thread in GDB's internal list, | |
1613 | ading the thread if it does not already exist. This involves | |
1614 | getting partial thread lists from the remote target so, polling the | |
1615 | quit_flag is required. */ | |
1616 | ||
1617 | ||
23860348 | 1618 | /* About this many threadisds fit in a packet. */ |
c906108c SS |
1619 | |
1620 | #define MAXTHREADLISTRESULTS 32 | |
1621 | ||
1622 | static int | |
fba45db2 KB |
1623 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
1624 | int looplimit) | |
c906108c SS |
1625 | { |
1626 | int done, i, result_count; | |
1627 | int startflag = 1; | |
1628 | int result = 1; | |
1629 | int loopcount = 0; | |
1630 | static threadref nextthread; | |
1631 | static threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
1632 | ||
1633 | done = 0; | |
1634 | while (!done) | |
1635 | { | |
1636 | if (loopcount++ > looplimit) | |
1637 | { | |
1638 | result = 0; | |
8a3fe4f8 | 1639 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
1640 | break; |
1641 | } | |
1642 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS, | |
1643 | &done, &result_count, resultthreadlist)) | |
1644 | { | |
1645 | result = 0; | |
1646 | break; | |
1647 | } | |
23860348 | 1648 | /* Clear for later iterations. */ |
c906108c SS |
1649 | startflag = 0; |
1650 | /* Setup to resume next batch of thread references, set nextthread. */ | |
1651 | if (result_count >= 1) | |
1652 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |
1653 | i = 0; | |
1654 | while (result_count--) | |
1655 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |
1656 | break; | |
1657 | } | |
1658 | return result; | |
1659 | } | |
1660 | ||
1661 | static int | |
fba45db2 | 1662 | remote_newthread_step (threadref *ref, void *context) |
c906108c | 1663 | { |
39f77062 | 1664 | ptid_t ptid; |
c906108c | 1665 | |
39f77062 KB |
1666 | ptid = pid_to_ptid (threadref_to_int (ref)); |
1667 | ||
1668 | if (!in_thread_list (ptid)) | |
1669 | add_thread (ptid); | |
c906108c SS |
1670 | return 1; /* continue iterator */ |
1671 | } | |
1672 | ||
1673 | #define CRAZY_MAX_THREADS 1000 | |
1674 | ||
39f77062 KB |
1675 | static ptid_t |
1676 | remote_current_thread (ptid_t oldpid) | |
c906108c | 1677 | { |
d01949b6 | 1678 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 1679 | char *buf = rs->buf; |
c906108c SS |
1680 | |
1681 | putpkt ("qC"); | |
6d820c5c | 1682 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 1683 | if (buf[0] == 'Q' && buf[1] == 'C') |
c273b20f JB |
1684 | /* Use strtoul here, so we'll correctly parse values whose highest |
1685 | bit is set. The protocol carries them as a simple series of | |
1686 | hex digits; in the absence of a sign, strtol will see such | |
1687 | values as positive numbers out of range for signed 'long', and | |
1688 | return LONG_MAX to indicate an overflow. */ | |
1689 | return pid_to_ptid (strtoul (&buf[2], NULL, 16)); | |
c906108c SS |
1690 | else |
1691 | return oldpid; | |
1692 | } | |
1693 | ||
802188a7 RM |
1694 | /* Find new threads for info threads command. |
1695 | * Original version, using John Metzler's thread protocol. | |
9d1f7ab2 | 1696 | */ |
cce74817 JM |
1697 | |
1698 | static void | |
fba45db2 | 1699 | remote_find_new_threads (void) |
c906108c | 1700 | { |
c5aa993b JM |
1701 | remote_threadlist_iterator (remote_newthread_step, 0, |
1702 | CRAZY_MAX_THREADS); | |
39f77062 KB |
1703 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) /* ack ack ack */ |
1704 | inferior_ptid = remote_current_thread (inferior_ptid); | |
c906108c SS |
1705 | } |
1706 | ||
9d1f7ab2 MS |
1707 | /* |
1708 | * Find all threads for info threads command. | |
1709 | * Uses new thread protocol contributed by Cisco. | |
1710 | * Falls back and attempts to use the older method (above) | |
1711 | * if the target doesn't respond to the new method. | |
1712 | */ | |
1713 | ||
0f71a2f6 JM |
1714 | static void |
1715 | remote_threads_info (void) | |
1716 | { | |
d01949b6 | 1717 | struct remote_state *rs = get_remote_state (); |
085dd6e6 | 1718 | char *bufp; |
0f71a2f6 JM |
1719 | int tid; |
1720 | ||
1721 | if (remote_desc == 0) /* paranoia */ | |
8a3fe4f8 | 1722 | error (_("Command can only be used when connected to the remote target.")); |
0f71a2f6 | 1723 | |
9d1f7ab2 MS |
1724 | if (use_threadinfo_query) |
1725 | { | |
1726 | putpkt ("qfThreadInfo"); | |
6d820c5c DJ |
1727 | bufp = rs->buf; |
1728 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9d1f7ab2 | 1729 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 1730 | { |
9d1f7ab2 MS |
1731 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
1732 | { | |
1733 | do | |
1734 | { | |
c273b20f JB |
1735 | /* Use strtoul here, so we'll correctly parse values |
1736 | whose highest bit is set. The protocol carries | |
1737 | them as a simple series of hex digits; in the | |
1738 | absence of a sign, strtol will see such values as | |
1739 | positive numbers out of range for signed 'long', | |
1740 | and return LONG_MAX to indicate an overflow. */ | |
1741 | tid = strtoul (bufp, &bufp, 16); | |
39f77062 KB |
1742 | if (tid != 0 && !in_thread_list (pid_to_ptid (tid))) |
1743 | add_thread (pid_to_ptid (tid)); | |
9d1f7ab2 MS |
1744 | } |
1745 | while (*bufp++ == ','); /* comma-separated list */ | |
1746 | putpkt ("qsThreadInfo"); | |
6d820c5c DJ |
1747 | bufp = rs->buf; |
1748 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9d1f7ab2 MS |
1749 | } |
1750 | return; /* done */ | |
1751 | } | |
1752 | } | |
1753 | ||
23860348 | 1754 | /* Else fall back to old method based on jmetzler protocol. */ |
9d1f7ab2 MS |
1755 | use_threadinfo_query = 0; |
1756 | remote_find_new_threads (); | |
1757 | return; | |
1758 | } | |
1759 | ||
802188a7 | 1760 | /* |
9d1f7ab2 MS |
1761 | * Collect a descriptive string about the given thread. |
1762 | * The target may say anything it wants to about the thread | |
1763 | * (typically info about its blocked / runnable state, name, etc.). | |
1764 | * This string will appear in the info threads display. | |
802188a7 | 1765 | * |
9d1f7ab2 MS |
1766 | * Optional: targets are not required to implement this function. |
1767 | */ | |
1768 | ||
1769 | static char * | |
1770 | remote_threads_extra_info (struct thread_info *tp) | |
1771 | { | |
d01949b6 | 1772 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
1773 | int result; |
1774 | int set; | |
1775 | threadref id; | |
1776 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 1777 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
1778 | int n = 0; /* position in display_buf */ |
1779 | ||
1780 | if (remote_desc == 0) /* paranoia */ | |
8e65ff28 | 1781 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 1782 | _("remote_threads_extra_info")); |
9d1f7ab2 MS |
1783 | |
1784 | if (use_threadextra_query) | |
1785 | { | |
6d820c5c DJ |
1786 | char *bufp = rs->buf; |
1787 | ||
ea9c271d | 1788 | xsnprintf (bufp, get_remote_packet_size (), "qThreadExtraInfo,%x", |
ecbc58df | 1789 | PIDGET (tp->ptid)); |
9d1f7ab2 | 1790 | putpkt (bufp); |
6d820c5c | 1791 | getpkt (&rs->buf, &rs->buf_size, 0); |
9d1f7ab2 MS |
1792 | if (bufp[0] != 0) |
1793 | { | |
30559e10 | 1794 | n = min (strlen (bufp) / 2, sizeof (display_buf)); |
cfd77fa1 | 1795 | result = hex2bin (bufp, (gdb_byte *) display_buf, n); |
30559e10 | 1796 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
1797 | return display_buf; |
1798 | } | |
0f71a2f6 | 1799 | } |
9d1f7ab2 MS |
1800 | |
1801 | /* If the above query fails, fall back to the old method. */ | |
1802 | use_threadextra_query = 0; | |
1803 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
1804 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
39f77062 | 1805 | int_to_threadref (&id, PIDGET (tp->ptid)); |
9d1f7ab2 MS |
1806 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
1807 | if (threadinfo.active) | |
0f71a2f6 | 1808 | { |
9d1f7ab2 | 1809 | if (*threadinfo.shortname) |
ecbc58df WZ |
1810 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
1811 | " Name: %s,", threadinfo.shortname); | |
9d1f7ab2 | 1812 | if (*threadinfo.display) |
ecbc58df WZ |
1813 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
1814 | " State: %s,", threadinfo.display); | |
9d1f7ab2 | 1815 | if (*threadinfo.more_display) |
ecbc58df WZ |
1816 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
1817 | " Priority: %s", threadinfo.more_display); | |
9d1f7ab2 MS |
1818 | |
1819 | if (n > 0) | |
c5aa993b | 1820 | { |
23860348 | 1821 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
1822 | if (',' == display_buf[n-1]) |
1823 | display_buf[n-1] = ' '; | |
1824 | return display_buf; | |
c5aa993b | 1825 | } |
0f71a2f6 | 1826 | } |
9d1f7ab2 | 1827 | return NULL; |
0f71a2f6 | 1828 | } |
c906108c | 1829 | \f |
c5aa993b | 1830 | |
24b06219 | 1831 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
1832 | |
1833 | static void | |
fba45db2 | 1834 | extended_remote_restart (void) |
c906108c | 1835 | { |
d01949b6 | 1836 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1837 | |
1838 | /* Send the restart command; for reasons I don't understand the | |
1839 | remote side really expects a number after the "R". */ | |
ea9c271d | 1840 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); |
6d820c5c | 1841 | putpkt (rs->buf); |
c906108c | 1842 | |
ad9a8f3f NS |
1843 | remote_fileio_reset (); |
1844 | ||
c906108c SS |
1845 | /* Now query for status so this looks just like we restarted |
1846 | gdbserver from scratch. */ | |
1847 | putpkt ("?"); | |
01d3a6ce | 1848 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c SS |
1849 | } |
1850 | \f | |
1851 | /* Clean up connection to a remote debugger. */ | |
1852 | ||
c906108c | 1853 | static void |
fba45db2 | 1854 | remote_close (int quitting) |
c906108c SS |
1855 | { |
1856 | if (remote_desc) | |
2cd58942 | 1857 | serial_close (remote_desc); |
c906108c SS |
1858 | remote_desc = NULL; |
1859 | } | |
1860 | ||
23860348 | 1861 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
1862 | |
1863 | static void | |
fba45db2 | 1864 | get_offsets (void) |
c906108c | 1865 | { |
d01949b6 | 1866 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 1867 | char *buf = rs->buf; |
085dd6e6 | 1868 | char *ptr; |
c906108c SS |
1869 | int lose; |
1870 | CORE_ADDR text_addr, data_addr, bss_addr; | |
1871 | struct section_offsets *offs; | |
1872 | ||
1873 | putpkt ("qOffsets"); | |
6d820c5c | 1874 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c SS |
1875 | |
1876 | if (buf[0] == '\000') | |
1877 | return; /* Return silently. Stub doesn't support | |
23860348 | 1878 | this command. */ |
c906108c SS |
1879 | if (buf[0] == 'E') |
1880 | { | |
8a3fe4f8 | 1881 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
1882 | return; |
1883 | } | |
1884 | ||
1885 | /* Pick up each field in turn. This used to be done with scanf, but | |
1886 | scanf will make trouble if CORE_ADDR size doesn't match | |
1887 | conversion directives correctly. The following code will work | |
1888 | with any size of CORE_ADDR. */ | |
1889 | text_addr = data_addr = bss_addr = 0; | |
1890 | ptr = buf; | |
1891 | lose = 0; | |
1892 | ||
1893 | if (strncmp (ptr, "Text=", 5) == 0) | |
1894 | { | |
1895 | ptr += 5; | |
1896 | /* Don't use strtol, could lose on big values. */ | |
1897 | while (*ptr && *ptr != ';') | |
1898 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
1899 | } | |
1900 | else | |
1901 | lose = 1; | |
1902 | ||
1903 | if (!lose && strncmp (ptr, ";Data=", 6) == 0) | |
1904 | { | |
1905 | ptr += 6; | |
1906 | while (*ptr && *ptr != ';') | |
1907 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
1908 | } | |
1909 | else | |
1910 | lose = 1; | |
1911 | ||
1912 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
1913 | { | |
1914 | ptr += 5; | |
1915 | while (*ptr && *ptr != ';') | |
1916 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
1917 | } | |
1918 | else | |
1919 | lose = 1; | |
1920 | ||
1921 | if (lose) | |
8a3fe4f8 | 1922 | error (_("Malformed response to offset query, %s"), buf); |
c906108c SS |
1923 | |
1924 | if (symfile_objfile == NULL) | |
1925 | return; | |
1926 | ||
802188a7 | 1927 | offs = ((struct section_offsets *) |
a39a16c4 | 1928 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 1929 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 1930 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 1931 | |
a4c8257b | 1932 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; |
c906108c SS |
1933 | |
1934 | /* This is a temporary kludge to force data and bss to use the same offsets | |
1935 | because that's what nlmconv does now. The real solution requires changes | |
1936 | to the stub and remote.c that I don't have time to do right now. */ | |
1937 | ||
a4c8257b EZ |
1938 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; |
1939 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
c906108c SS |
1940 | |
1941 | objfile_relocate (symfile_objfile, offs); | |
1942 | } | |
1943 | ||
1944 | /* Stub for catch_errors. */ | |
1945 | ||
0f71a2f6 | 1946 | static int |
36918e70 | 1947 | remote_start_remote_dummy (struct ui_out *uiout, void *dummy) |
0f71a2f6 | 1948 | { |
23860348 | 1949 | start_remote (); /* Initialize gdb process mechanisms. */ |
36918e70 AC |
1950 | /* NOTE: Return something >=0. A -ve value is reserved for |
1951 | catch_exceptions. */ | |
0f71a2f6 JM |
1952 | return 1; |
1953 | } | |
1954 | ||
9cbc821d | 1955 | static void |
36918e70 | 1956 | remote_start_remote (struct ui_out *uiout, void *dummy) |
c906108c | 1957 | { |
23860348 | 1958 | immediate_quit++; /* Allow user to interrupt it. */ |
c906108c SS |
1959 | |
1960 | /* Ack any packet which the remote side has already sent. */ | |
2cd58942 | 1961 | serial_write (remote_desc, "+", 1); |
c906108c SS |
1962 | |
1963 | /* Let the stub know that we want it to return the thread. */ | |
1964 | set_thread (-1, 0); | |
1965 | ||
39f77062 | 1966 | inferior_ptid = remote_current_thread (inferior_ptid); |
c906108c | 1967 | |
23860348 | 1968 | get_offsets (); /* Get text, data & bss offsets. */ |
c906108c | 1969 | |
23860348 | 1970 | putpkt ("?"); /* Initiate a query from remote machine. */ |
8edbea78 | 1971 | immediate_quit--; |
c906108c | 1972 | |
9cbc821d | 1973 | remote_start_remote_dummy (uiout, dummy); |
c906108c SS |
1974 | } |
1975 | ||
1976 | /* Open a connection to a remote debugger. | |
1977 | NAME is the filename used for communication. */ | |
1978 | ||
1979 | static void | |
fba45db2 | 1980 | remote_open (char *name, int from_tty) |
c906108c | 1981 | { |
92d1e331 | 1982 | remote_open_1 (name, from_tty, &remote_ops, 0, 0); |
c906108c SS |
1983 | } |
1984 | ||
23860348 | 1985 | /* Just like remote_open, but with asynchronous support. */ |
43ff13b4 | 1986 | static void |
fba45db2 | 1987 | remote_async_open (char *name, int from_tty) |
43ff13b4 | 1988 | { |
92d1e331 | 1989 | remote_open_1 (name, from_tty, &remote_async_ops, 0, 1); |
43ff13b4 JM |
1990 | } |
1991 | ||
c906108c SS |
1992 | /* Open a connection to a remote debugger using the extended |
1993 | remote gdb protocol. NAME is the filename used for communication. */ | |
1994 | ||
1995 | static void | |
fba45db2 | 1996 | extended_remote_open (char *name, int from_tty) |
c906108c | 1997 | { |
92d1e331 DJ |
1998 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */, |
1999 | 0 /* async_p */); | |
c906108c SS |
2000 | } |
2001 | ||
23860348 | 2002 | /* Just like extended_remote_open, but with asynchronous support. */ |
43ff13b4 | 2003 | static void |
fba45db2 | 2004 | extended_remote_async_open (char *name, int from_tty) |
43ff13b4 | 2005 | { |
92d1e331 DJ |
2006 | remote_open_1 (name, from_tty, &extended_async_remote_ops, |
2007 | 1 /*extended_p */, 1 /* async_p */); | |
43ff13b4 JM |
2008 | } |
2009 | ||
c906108c SS |
2010 | /* Generic code for opening a connection to a remote target. */ |
2011 | ||
d471ea57 AC |
2012 | static void |
2013 | init_all_packet_configs (void) | |
2014 | { | |
2015 | int i; | |
444abaca DJ |
2016 | for (i = 0; i < PACKET_MAX; i++) |
2017 | update_packet_config (&remote_protocol_packets[i]); | |
d471ea57 AC |
2018 | } |
2019 | ||
23860348 | 2020 | /* Symbol look-up. */ |
dc8acb97 MS |
2021 | |
2022 | static void | |
2023 | remote_check_symbols (struct objfile *objfile) | |
2024 | { | |
d01949b6 | 2025 | struct remote_state *rs = get_remote_state (); |
dc8acb97 MS |
2026 | char *msg, *reply, *tmp; |
2027 | struct minimal_symbol *sym; | |
2028 | int end; | |
2029 | ||
444abaca | 2030 | if (remote_protocol_packets[PACKET_qSymbol].support == PACKET_DISABLE) |
dc8acb97 MS |
2031 | return; |
2032 | ||
6d820c5c DJ |
2033 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
2034 | because we need both at the same time. */ | |
ea9c271d | 2035 | msg = alloca (get_remote_packet_size ()); |
6d820c5c DJ |
2036 | |
2037 | reply = rs->buf; | |
dc8acb97 | 2038 | |
23860348 | 2039 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
2040 | |
2041 | putpkt ("qSymbol::"); | |
6d820c5c DJ |
2042 | getpkt (&rs->buf, &rs->buf_size, 0); |
2043 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSymbol]); | |
dc8acb97 MS |
2044 | |
2045 | while (strncmp (reply, "qSymbol:", 8) == 0) | |
2046 | { | |
2047 | tmp = &reply[8]; | |
cfd77fa1 | 2048 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
2049 | msg[end] = '\0'; |
2050 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
2051 | if (sym == NULL) | |
ea9c271d | 2052 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
dc8acb97 | 2053 | else |
ea9c271d | 2054 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", |
ecbc58df WZ |
2055 | paddr_nz (SYMBOL_VALUE_ADDRESS (sym)), |
2056 | &reply[8]); | |
dc8acb97 | 2057 | putpkt (msg); |
6d820c5c | 2058 | getpkt (&rs->buf, &rs->buf_size, 0); |
dc8acb97 MS |
2059 | } |
2060 | } | |
2061 | ||
9db8d71f DJ |
2062 | static struct serial * |
2063 | remote_serial_open (char *name) | |
2064 | { | |
2065 | static int udp_warning = 0; | |
2066 | ||
2067 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
2068 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
2069 | serial connection is reliable and not the serial connection promising | |
2070 | to be. */ | |
2071 | if (!udp_warning && strncmp (name, "udp:", 4) == 0) | |
2072 | { | |
8a3fe4f8 AC |
2073 | warning (_("\ |
2074 | The remote protocol may be unreliable over UDP.\n\ | |
2075 | Some events may be lost, rendering further debugging impossible.")); | |
9db8d71f DJ |
2076 | udp_warning = 1; |
2077 | } | |
2078 | ||
2079 | return serial_open (name); | |
2080 | } | |
2081 | ||
be2a5f71 DJ |
2082 | /* This type describes each known response to the qSupported |
2083 | packet. */ | |
2084 | struct protocol_feature | |
2085 | { | |
2086 | /* The name of this protocol feature. */ | |
2087 | const char *name; | |
2088 | ||
2089 | /* The default for this protocol feature. */ | |
2090 | enum packet_support default_support; | |
2091 | ||
2092 | /* The function to call when this feature is reported, or after | |
2093 | qSupported processing if the feature is not supported. | |
2094 | The first argument points to this structure. The second | |
2095 | argument indicates whether the packet requested support be | |
2096 | enabled, disabled, or probed (or the default, if this function | |
2097 | is being called at the end of processing and this feature was | |
2098 | not reported). The third argument may be NULL; if not NULL, it | |
2099 | is a NUL-terminated string taken from the packet following | |
2100 | this feature's name and an equals sign. */ | |
2101 | void (*func) (const struct protocol_feature *, enum packet_support, | |
2102 | const char *); | |
2103 | ||
2104 | /* The corresponding packet for this feature. Only used if | |
2105 | FUNC is remote_supported_packet. */ | |
2106 | int packet; | |
2107 | }; | |
2108 | ||
2109 | #if 0 | |
2110 | static void | |
2111 | remote_supported_packet (const struct protocol_feature *feature, | |
2112 | enum packet_support support, | |
2113 | const char *argument) | |
2114 | { | |
2115 | if (argument) | |
2116 | { | |
2117 | warning (_("Remote qSupported response supplied an unexpected value for" | |
2118 | " \"%s\"."), feature->name); | |
2119 | return; | |
2120 | } | |
2121 | ||
2122 | if (remote_protocol_packets[feature->packet].support | |
2123 | == PACKET_SUPPORT_UNKNOWN) | |
2124 | remote_protocol_packets[feature->packet].support = support; | |
2125 | } | |
2126 | #endif | |
2127 | ||
2128 | static void | |
2129 | remote_packet_size (const struct protocol_feature *feature, | |
2130 | enum packet_support support, const char *value) | |
2131 | { | |
2132 | struct remote_state *rs = get_remote_state (); | |
2133 | ||
2134 | int packet_size; | |
2135 | char *value_end; | |
2136 | ||
2137 | if (support != PACKET_ENABLE) | |
2138 | return; | |
2139 | ||
2140 | if (value == NULL || *value == '\0') | |
2141 | { | |
2142 | warning (_("Remote target reported \"%s\" without a size."), | |
2143 | feature->name); | |
2144 | return; | |
2145 | } | |
2146 | ||
2147 | errno = 0; | |
2148 | packet_size = strtol (value, &value_end, 16); | |
2149 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
2150 | { | |
2151 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
2152 | feature->name, value); | |
2153 | return; | |
2154 | } | |
2155 | ||
2156 | if (packet_size > MAX_REMOTE_PACKET_SIZE) | |
2157 | { | |
2158 | warning (_("limiting remote suggested packet size (%d bytes) to %d"), | |
2159 | packet_size, MAX_REMOTE_PACKET_SIZE); | |
2160 | packet_size = MAX_REMOTE_PACKET_SIZE; | |
2161 | } | |
2162 | ||
2163 | /* Record the new maximum packet size. */ | |
2164 | rs->explicit_packet_size = packet_size; | |
2165 | } | |
2166 | ||
2167 | static struct protocol_feature remote_protocol_features[] = { | |
2168 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 } | |
2169 | }; | |
2170 | ||
2171 | static void | |
2172 | remote_query_supported (void) | |
2173 | { | |
2174 | struct remote_state *rs = get_remote_state (); | |
2175 | char *next; | |
2176 | int i; | |
2177 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
2178 | ||
2179 | /* The packet support flags are handled differently for this packet | |
2180 | than for most others. We treat an error, a disabled packet, and | |
2181 | an empty response identically: any features which must be reported | |
2182 | to be used will be automatically disabled. An empty buffer | |
2183 | accomplishes this, since that is also the representation for a list | |
2184 | containing no features. */ | |
2185 | ||
2186 | rs->buf[0] = 0; | |
2187 | if (remote_protocol_packets[PACKET_qSupported].support != PACKET_DISABLE) | |
2188 | { | |
2189 | putpkt ("qSupported"); | |
2190 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2191 | ||
2192 | /* If an error occured, warn, but do not return - just reset the | |
2193 | buffer to empty and go on to disable features. */ | |
2194 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
2195 | == PACKET_ERROR) | |
2196 | { | |
2197 | warning (_("Remote failure reply: %s"), rs->buf); | |
2198 | rs->buf[0] = 0; | |
2199 | } | |
2200 | } | |
2201 | ||
2202 | memset (seen, 0, sizeof (seen)); | |
2203 | ||
2204 | next = rs->buf; | |
2205 | while (*next) | |
2206 | { | |
2207 | enum packet_support is_supported; | |
2208 | char *p, *end, *name_end, *value; | |
2209 | ||
2210 | /* First separate out this item from the rest of the packet. If | |
2211 | there's another item after this, we overwrite the separator | |
2212 | (terminated strings are much easier to work with). */ | |
2213 | p = next; | |
2214 | end = strchr (p, ';'); | |
2215 | if (end == NULL) | |
2216 | { | |
2217 | end = p + strlen (p); | |
2218 | next = end; | |
2219 | } | |
2220 | else | |
2221 | { | |
2222 | if (end == p) | |
2223 | { | |
2224 | warning (_("empty item in \"qSupported\" response")); | |
2225 | continue; | |
2226 | } | |
2227 | ||
2228 | *end = '\0'; | |
2229 | next = end + 1; | |
2230 | } | |
2231 | ||
2232 | name_end = strchr (p, '='); | |
2233 | if (name_end) | |
2234 | { | |
2235 | /* This is a name=value entry. */ | |
2236 | is_supported = PACKET_ENABLE; | |
2237 | value = name_end + 1; | |
2238 | *name_end = '\0'; | |
2239 | } | |
2240 | else | |
2241 | { | |
2242 | value = NULL; | |
2243 | switch (end[-1]) | |
2244 | { | |
2245 | case '+': | |
2246 | is_supported = PACKET_ENABLE; | |
2247 | break; | |
2248 | ||
2249 | case '-': | |
2250 | is_supported = PACKET_DISABLE; | |
2251 | break; | |
2252 | ||
2253 | case '?': | |
2254 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
2255 | break; | |
2256 | ||
2257 | default: | |
2258 | warning (_("unrecognized item \"%s\" in \"qSupported\" response"), p); | |
2259 | continue; | |
2260 | } | |
2261 | end[-1] = '\0'; | |
2262 | } | |
2263 | ||
2264 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
2265 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
2266 | { | |
2267 | const struct protocol_feature *feature; | |
2268 | ||
2269 | seen[i] = 1; | |
2270 | feature = &remote_protocol_features[i]; | |
2271 | feature->func (feature, is_supported, value); | |
2272 | break; | |
2273 | } | |
2274 | } | |
2275 | ||
2276 | /* If we increased the packet size, make sure to increase the global | |
2277 | buffer size also. We delay this until after parsing the entire | |
2278 | qSupported packet, because this is the same buffer we were | |
2279 | parsing. */ | |
2280 | if (rs->buf_size < rs->explicit_packet_size) | |
2281 | { | |
2282 | rs->buf_size = rs->explicit_packet_size; | |
2283 | rs->buf = xrealloc (rs->buf, rs->buf_size); | |
2284 | } | |
2285 | ||
2286 | /* Handle the defaults for unmentioned features. */ | |
2287 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
2288 | if (!seen[i]) | |
2289 | { | |
2290 | const struct protocol_feature *feature; | |
2291 | ||
2292 | feature = &remote_protocol_features[i]; | |
2293 | feature->func (feature, feature->default_support, NULL); | |
2294 | } | |
2295 | } | |
2296 | ||
2297 | ||
c906108c | 2298 | static void |
fba45db2 | 2299 | remote_open_1 (char *name, int from_tty, struct target_ops *target, |
92d1e331 | 2300 | int extended_p, int async_p) |
c906108c | 2301 | { |
d01949b6 | 2302 | struct remote_state *rs = get_remote_state (); |
c906108c | 2303 | if (name == 0) |
8a3fe4f8 | 2304 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 2305 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 2306 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 2307 | |
23860348 | 2308 | /* See FIXME above. */ |
92d1e331 DJ |
2309 | if (!async_p) |
2310 | wait_forever_enabled_p = 1; | |
6426a772 | 2311 | |
c906108c SS |
2312 | target_preopen (from_tty); |
2313 | ||
2314 | unpush_target (target); | |
2315 | ||
ad9a8f3f | 2316 | remote_fileio_reset (); |
1dd41f16 NS |
2317 | reopen_exec_file (); |
2318 | reread_symbols (); | |
2319 | ||
9db8d71f | 2320 | remote_desc = remote_serial_open (name); |
c906108c SS |
2321 | if (!remote_desc) |
2322 | perror_with_name (name); | |
2323 | ||
2324 | if (baud_rate != -1) | |
2325 | { | |
2cd58942 | 2326 | if (serial_setbaudrate (remote_desc, baud_rate)) |
c906108c | 2327 | { |
9b74d5d3 KB |
2328 | /* The requested speed could not be set. Error out to |
2329 | top level after closing remote_desc. Take care to | |
2330 | set remote_desc to NULL to avoid closing remote_desc | |
2331 | more than once. */ | |
2cd58942 | 2332 | serial_close (remote_desc); |
9b74d5d3 | 2333 | remote_desc = NULL; |
c906108c SS |
2334 | perror_with_name (name); |
2335 | } | |
2336 | } | |
2337 | ||
2cd58942 | 2338 | serial_raw (remote_desc); |
c906108c SS |
2339 | |
2340 | /* If there is something sitting in the buffer we might take it as a | |
2341 | response to a command, which would be bad. */ | |
2cd58942 | 2342 | serial_flush_input (remote_desc); |
c906108c SS |
2343 | |
2344 | if (from_tty) | |
2345 | { | |
2346 | puts_filtered ("Remote debugging using "); | |
2347 | puts_filtered (name); | |
2348 | puts_filtered ("\n"); | |
2349 | } | |
23860348 | 2350 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 2351 | |
be2a5f71 DJ |
2352 | /* Reset the target state; these things will be queried either by |
2353 | remote_query_supported or as they are needed. */ | |
d471ea57 | 2354 | init_all_packet_configs (); |
be2a5f71 | 2355 | rs->explicit_packet_size = 0; |
802188a7 | 2356 | |
c5aa993b | 2357 | general_thread = -2; |
cce74817 | 2358 | continue_thread = -2; |
c906108c | 2359 | |
9d1f7ab2 MS |
2360 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
2361 | use_threadinfo_query = 1; | |
2362 | use_threadextra_query = 1; | |
2363 | ||
be2a5f71 DJ |
2364 | /* The first packet we send to the target is the optional "supported |
2365 | packets" request. If the target can answer this, it will tell us | |
2366 | which later probes to skip. */ | |
2367 | remote_query_supported (); | |
2368 | ||
c906108c SS |
2369 | /* Without this, some commands which require an active target (such |
2370 | as kill) won't work. This variable serves (at least) double duty | |
2371 | as both the pid of the target process (if it has such), and as a | |
2372 | flag indicating that a target is active. These functions should | |
2373 | be split out into seperate variables, especially since GDB will | |
2374 | someday have a notion of debugging several processes. */ | |
2375 | ||
39f77062 | 2376 | inferior_ptid = pid_to_ptid (MAGIC_NULL_PID); |
92d1e331 DJ |
2377 | |
2378 | if (async_p) | |
2379 | { | |
23860348 | 2380 | /* With this target we start out by owning the terminal. */ |
92d1e331 DJ |
2381 | remote_async_terminal_ours_p = 1; |
2382 | ||
2383 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
2384 | assumed that the target is already ready and able to respond to | |
2385 | requests. Unfortunately remote_start_remote() eventually calls | |
2386 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets | |
2387 | around this. Eventually a mechanism that allows | |
2388 | wait_for_inferior() to expect/get timeouts will be | |
23860348 | 2389 | implemented. */ |
92d1e331 DJ |
2390 | wait_forever_enabled_p = 0; |
2391 | } | |
2392 | ||
23860348 | 2393 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 2394 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 2395 | |
36918e70 | 2396 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
2397 | target (we'd otherwise be in an inconsistent state) and then |
2398 | propogate the error on up the exception chain. This ensures that | |
2399 | the caller doesn't stumble along blindly assuming that the | |
2400 | function succeeded. The CLI doesn't have this problem but other | |
2401 | UI's, such as MI do. | |
36918e70 AC |
2402 | |
2403 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
2404 | this function should return an error indication letting the | |
ce2826aa | 2405 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
2406 | ``target remote'' is directly wired to this function making that |
2407 | impossible. On a positive note, the CLI side of this problem has | |
2408 | been fixed - the function set_cmd_context() makes it possible for | |
2409 | all the ``target ....'' commands to share a common callback | |
2410 | function. See cli-dump.c. */ | |
109c3e39 AC |
2411 | { |
2412 | struct gdb_exception ex | |
2413 | = catch_exception (uiout, remote_start_remote, NULL, RETURN_MASK_ALL); | |
2414 | if (ex.reason < 0) | |
2415 | { | |
2416 | pop_target (); | |
2417 | if (async_p) | |
2418 | wait_forever_enabled_p = 1; | |
2419 | throw_exception (ex); | |
2420 | } | |
2421 | } | |
c906108c | 2422 | |
92d1e331 DJ |
2423 | if (async_p) |
2424 | wait_forever_enabled_p = 1; | |
6426a772 JM |
2425 | |
2426 | if (extended_p) | |
43ff13b4 | 2427 | { |
6240bebf | 2428 | /* Tell the remote that we are using the extended protocol. */ |
6426a772 | 2429 | putpkt ("!"); |
6d820c5c | 2430 | getpkt (&rs->buf, &rs->buf_size, 0); |
43ff13b4 | 2431 | } |
a77053c2 | 2432 | |
9353355f | 2433 | post_create_inferior (¤t_target, from_tty); |
f78f6cf1 | 2434 | |
23860348 | 2435 | if (exec_bfd) /* No use without an exec file. */ |
9353355f | 2436 | remote_check_symbols (symfile_objfile); |
43ff13b4 JM |
2437 | } |
2438 | ||
c906108c SS |
2439 | /* This takes a program previously attached to and detaches it. After |
2440 | this is done, GDB can be used to debug some other program. We | |
2441 | better not have left any breakpoints in the target program or it'll | |
2442 | die when it hits one. */ | |
2443 | ||
2444 | static void | |
fba45db2 | 2445 | remote_detach (char *args, int from_tty) |
c906108c | 2446 | { |
d01949b6 | 2447 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2448 | |
2449 | if (args) | |
8a3fe4f8 | 2450 | error (_("Argument given to \"detach\" when remotely debugging.")); |
c906108c SS |
2451 | |
2452 | /* Tell the remote target to detach. */ | |
6d820c5c DJ |
2453 | strcpy (rs->buf, "D"); |
2454 | remote_send (&rs->buf, &rs->buf_size); | |
c906108c | 2455 | |
23860348 | 2456 | /* Unregister the file descriptor from the event loop. */ |
6ad8ae5c DJ |
2457 | if (target_is_async_p ()) |
2458 | serial_async (remote_desc, NULL, 0); | |
2459 | ||
cca728d0 | 2460 | target_mourn_inferior (); |
c906108c SS |
2461 | if (from_tty) |
2462 | puts_filtered ("Ending remote debugging.\n"); | |
2463 | } | |
2464 | ||
6ad8ae5c DJ |
2465 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
2466 | ||
43ff13b4 | 2467 | static void |
597320e7 | 2468 | remote_disconnect (struct target_ops *target, char *args, int from_tty) |
43ff13b4 | 2469 | { |
43ff13b4 | 2470 | if (args) |
8a3fe4f8 | 2471 | error (_("Argument given to \"detach\" when remotely debugging.")); |
43ff13b4 | 2472 | |
23860348 | 2473 | /* Unregister the file descriptor from the event loop. */ |
ed9a39eb | 2474 | if (target_is_async_p ()) |
2cd58942 | 2475 | serial_async (remote_desc, NULL, 0); |
43ff13b4 | 2476 | |
cca728d0 | 2477 | target_mourn_inferior (); |
43ff13b4 JM |
2478 | if (from_tty) |
2479 | puts_filtered ("Ending remote debugging.\n"); | |
2480 | } | |
2481 | ||
c906108c SS |
2482 | /* Convert hex digit A to a number. */ |
2483 | ||
30559e10 | 2484 | static int |
fba45db2 | 2485 | fromhex (int a) |
c906108c SS |
2486 | { |
2487 | if (a >= '0' && a <= '9') | |
2488 | return a - '0'; | |
2489 | else if (a >= 'a' && a <= 'f') | |
2490 | return a - 'a' + 10; | |
2491 | else if (a >= 'A' && a <= 'F') | |
2492 | return a - 'A' + 10; | |
c5aa993b | 2493 | else |
8a3fe4f8 | 2494 | error (_("Reply contains invalid hex digit %d"), a); |
c906108c SS |
2495 | } |
2496 | ||
30559e10 | 2497 | static int |
cfd77fa1 | 2498 | hex2bin (const char *hex, gdb_byte *bin, int count) |
30559e10 MS |
2499 | { |
2500 | int i; | |
2501 | ||
30559e10 MS |
2502 | for (i = 0; i < count; i++) |
2503 | { | |
2504 | if (hex[0] == 0 || hex[1] == 0) | |
2505 | { | |
2506 | /* Hex string is short, or of uneven length. | |
23860348 | 2507 | Return the count that has been converted so far. */ |
30559e10 MS |
2508 | return i; |
2509 | } | |
2510 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); | |
2511 | hex += 2; | |
2512 | } | |
2513 | return i; | |
2514 | } | |
2515 | ||
c906108c SS |
2516 | /* Convert number NIB to a hex digit. */ |
2517 | ||
2518 | static int | |
fba45db2 | 2519 | tohex (int nib) |
c906108c SS |
2520 | { |
2521 | if (nib < 10) | |
c5aa993b | 2522 | return '0' + nib; |
c906108c | 2523 | else |
c5aa993b | 2524 | return 'a' + nib - 10; |
c906108c | 2525 | } |
30559e10 MS |
2526 | |
2527 | static int | |
cfd77fa1 | 2528 | bin2hex (const gdb_byte *bin, char *hex, int count) |
30559e10 MS |
2529 | { |
2530 | int i; | |
23860348 | 2531 | /* May use a length, or a nul-terminated string as input. */ |
30559e10 | 2532 | if (count == 0) |
cfd77fa1 | 2533 | count = strlen ((char *) bin); |
30559e10 MS |
2534 | |
2535 | for (i = 0; i < count; i++) | |
2536 | { | |
2537 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
2538 | *hex++ = tohex (*bin++ & 0xf); | |
2539 | } | |
2540 | *hex = 0; | |
2541 | return i; | |
2542 | } | |
c906108c | 2543 | \f |
506fb367 DJ |
2544 | /* Check for the availability of vCont. This function should also check |
2545 | the response. */ | |
c906108c SS |
2546 | |
2547 | static void | |
6d820c5c | 2548 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 2549 | { |
6d820c5c DJ |
2550 | char *buf = rs->buf; |
2551 | ||
506fb367 DJ |
2552 | strcpy (buf, "vCont?"); |
2553 | putpkt (buf); | |
6d820c5c | 2554 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 2555 | |
506fb367 DJ |
2556 | /* Make sure that the features we assume are supported. */ |
2557 | if (strncmp (buf, "vCont", 5) == 0) | |
2558 | { | |
2559 | char *p = &buf[5]; | |
2560 | int support_s, support_S, support_c, support_C; | |
2561 | ||
2562 | support_s = 0; | |
2563 | support_S = 0; | |
2564 | support_c = 0; | |
2565 | support_C = 0; | |
2566 | while (p && *p == ';') | |
2567 | { | |
2568 | p++; | |
2569 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2570 | support_s = 1; | |
2571 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2572 | support_S = 1; | |
2573 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2574 | support_c = 1; | |
2575 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2576 | support_C = 1; | |
2577 | ||
2578 | p = strchr (p, ';'); | |
2579 | } | |
c906108c | 2580 | |
506fb367 DJ |
2581 | /* If s, S, c, and C are not all supported, we can't use vCont. Clearing |
2582 | BUF will make packet_ok disable the packet. */ | |
2583 | if (!support_s || !support_S || !support_c || !support_C) | |
2584 | buf[0] = 0; | |
2585 | } | |
c906108c | 2586 | |
444abaca | 2587 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 2588 | } |
c906108c | 2589 | |
506fb367 DJ |
2590 | /* Resume the remote inferior by using a "vCont" packet. The thread |
2591 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
2592 | resumed thread should be single-stepped and/or signalled. If PTID's | |
2593 | PID is -1, then all threads are resumed; the thread to be stepped and/or | |
2594 | signalled is given in the global INFERIOR_PTID. This function returns | |
2595 | non-zero iff it resumes the inferior. | |
44eaed12 | 2596 | |
506fb367 DJ |
2597 | This function issues a strict subset of all possible vCont commands at the |
2598 | moment. */ | |
44eaed12 | 2599 | |
506fb367 DJ |
2600 | static int |
2601 | remote_vcont_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
2602 | { | |
2603 | struct remote_state *rs = get_remote_state (); | |
2604 | int pid = PIDGET (ptid); | |
2963ee1d | 2605 | char *buf = NULL, *outbuf; |
506fb367 | 2606 | struct cleanup *old_cleanup; |
44eaed12 | 2607 | |
444abaca | 2608 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 2609 | remote_vcont_probe (rs); |
44eaed12 | 2610 | |
444abaca | 2611 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_DISABLE) |
6d820c5c | 2612 | return 0; |
44eaed12 | 2613 | |
506fb367 DJ |
2614 | /* If we could generate a wider range of packets, we'd have to worry |
2615 | about overflowing BUF. Should there be a generic | |
2616 | "multi-part-packet" packet? */ | |
2617 | ||
2618 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) | |
c906108c | 2619 | { |
506fb367 DJ |
2620 | /* MAGIC_NULL_PTID means that we don't have any active threads, so we |
2621 | don't have any PID numbers the inferior will understand. Make sure | |
2622 | to only send forms that do not specify a PID. */ | |
2623 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d | 2624 | outbuf = xstrprintf ("vCont;S%02x", siggnal); |
506fb367 | 2625 | else if (step) |
2963ee1d | 2626 | outbuf = xstrprintf ("vCont;s"); |
506fb367 | 2627 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d | 2628 | outbuf = xstrprintf ("vCont;C%02x", siggnal); |
506fb367 | 2629 | else |
2963ee1d | 2630 | outbuf = xstrprintf ("vCont;c"); |
506fb367 DJ |
2631 | } |
2632 | else if (pid == -1) | |
2633 | { | |
2634 | /* Resume all threads, with preference for INFERIOR_PTID. */ | |
2635 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d DJ |
2636 | outbuf = xstrprintf ("vCont;S%02x:%x;c", siggnal, |
2637 | PIDGET (inferior_ptid)); | |
506fb367 | 2638 | else if (step) |
2963ee1d | 2639 | outbuf = xstrprintf ("vCont;s:%x;c", PIDGET (inferior_ptid)); |
506fb367 | 2640 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d DJ |
2641 | outbuf = xstrprintf ("vCont;C%02x:%x;c", siggnal, |
2642 | PIDGET (inferior_ptid)); | |
506fb367 | 2643 | else |
2963ee1d | 2644 | outbuf = xstrprintf ("vCont;c"); |
c906108c SS |
2645 | } |
2646 | else | |
506fb367 DJ |
2647 | { |
2648 | /* Scheduler locking; resume only PTID. */ | |
2649 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d | 2650 | outbuf = xstrprintf ("vCont;S%02x:%x", siggnal, pid); |
506fb367 | 2651 | else if (step) |
2963ee1d | 2652 | outbuf = xstrprintf ("vCont;s:%x", pid); |
506fb367 | 2653 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d | 2654 | outbuf = xstrprintf ("vCont;C%02x:%x", siggnal, pid); |
506fb367 | 2655 | else |
2963ee1d | 2656 | outbuf = xstrprintf ("vCont;c:%x", pid); |
506fb367 | 2657 | } |
c906108c | 2658 | |
ea9c271d | 2659 | gdb_assert (outbuf && strlen (outbuf) < get_remote_packet_size ()); |
6d820c5c | 2660 | old_cleanup = make_cleanup (xfree, outbuf); |
2963ee1d DJ |
2661 | |
2662 | putpkt (outbuf); | |
506fb367 DJ |
2663 | |
2664 | do_cleanups (old_cleanup); | |
2665 | ||
2666 | return 1; | |
c906108c | 2667 | } |
43ff13b4 | 2668 | |
506fb367 DJ |
2669 | /* Tell the remote machine to resume. */ |
2670 | ||
2671 | static enum target_signal last_sent_signal = TARGET_SIGNAL_0; | |
2672 | ||
2673 | static int last_sent_step; | |
2674 | ||
43ff13b4 | 2675 | static void |
506fb367 | 2676 | remote_resume (ptid_t ptid, int step, enum target_signal siggnal) |
43ff13b4 | 2677 | { |
d01949b6 | 2678 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 2679 | char *buf = rs->buf; |
39f77062 | 2680 | int pid = PIDGET (ptid); |
43ff13b4 | 2681 | |
43ff13b4 JM |
2682 | last_sent_signal = siggnal; |
2683 | last_sent_step = step; | |
2684 | ||
2685 | /* A hook for when we need to do something at the last moment before | |
2686 | resumption. */ | |
9a4105ab AC |
2687 | if (deprecated_target_resume_hook) |
2688 | (*deprecated_target_resume_hook) (); | |
43ff13b4 | 2689 | |
506fb367 DJ |
2690 | /* The vCont packet doesn't need to specify threads via Hc. */ |
2691 | if (remote_vcont_resume (ptid, step, siggnal)) | |
2692 | return; | |
2693 | ||
2694 | /* All other supported resume packets do use Hc, so call set_thread. */ | |
2695 | if (pid == -1) | |
23860348 | 2696 | set_thread (0, 0); /* Run any thread. */ |
506fb367 | 2697 | else |
23860348 | 2698 | set_thread (pid, 0); /* Run this thread. */ |
506fb367 | 2699 | |
43ff13b4 JM |
2700 | if (siggnal != TARGET_SIGNAL_0) |
2701 | { | |
2702 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 2703 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 2704 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
2705 | buf[3] = '\0'; |
2706 | } | |
2707 | else | |
c5aa993b | 2708 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 2709 | |
44eaed12 | 2710 | putpkt (buf); |
506fb367 DJ |
2711 | } |
2712 | ||
23860348 | 2713 | /* Same as remote_resume, but with async support. */ |
506fb367 DJ |
2714 | static void |
2715 | remote_async_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
2716 | { | |
2717 | remote_resume (ptid, step, siggnal); | |
43ff13b4 | 2718 | |
2acceee2 JM |
2719 | /* We are about to start executing the inferior, let's register it |
2720 | with the event loop. NOTE: this is the one place where all the | |
2721 | execution commands end up. We could alternatively do this in each | |
23860348 | 2722 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
2723 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
2724 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 2725 | NOT asynchronously. */ |
362646f5 | 2726 | if (target_can_async_p ()) |
2acceee2 | 2727 | target_async (inferior_event_handler, 0); |
23860348 | 2728 | /* Tell the world that the target is now executing. */ |
2acceee2 JM |
2729 | /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set |
2730 | this? Instead, should the client of target just assume (for | |
2731 | async targets) that the target is going to start executing? Is | |
2732 | this information already found in the continuation block? */ | |
ed9a39eb | 2733 | if (target_is_async_p ()) |
2acceee2 | 2734 | target_executing = 1; |
43ff13b4 | 2735 | } |
c906108c | 2736 | \f |
43ff13b4 JM |
2737 | |
2738 | /* Set up the signal handler for SIGINT, while the target is | |
23860348 | 2739 | executing, ovewriting the 'regular' SIGINT signal handler. */ |
43ff13b4 | 2740 | static void |
fba45db2 | 2741 | initialize_sigint_signal_handler (void) |
43ff13b4 | 2742 | { |
c5aa993b | 2743 | sigint_remote_token = |
43ff13b4 JM |
2744 | create_async_signal_handler (async_remote_interrupt, NULL); |
2745 | signal (SIGINT, handle_remote_sigint); | |
2746 | } | |
2747 | ||
23860348 | 2748 | /* Signal handler for SIGINT, while the target is executing. */ |
43ff13b4 | 2749 | static void |
fba45db2 | 2750 | handle_remote_sigint (int sig) |
43ff13b4 JM |
2751 | { |
2752 | signal (sig, handle_remote_sigint_twice); | |
c5aa993b | 2753 | sigint_remote_twice_token = |
43ff13b4 JM |
2754 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
2755 | mark_async_signal_handler_wrapper (sigint_remote_token); | |
2756 | } | |
2757 | ||
2758 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
2759 | sent once. It will take effect the second time that the user sends | |
23860348 | 2760 | a ^C. */ |
43ff13b4 | 2761 | static void |
fba45db2 | 2762 | handle_remote_sigint_twice (int sig) |
43ff13b4 JM |
2763 | { |
2764 | signal (sig, handle_sigint); | |
c5aa993b | 2765 | sigint_remote_twice_token = |
2df3850c | 2766 | create_async_signal_handler (inferior_event_handler_wrapper, NULL); |
43ff13b4 JM |
2767 | mark_async_signal_handler_wrapper (sigint_remote_twice_token); |
2768 | } | |
2769 | ||
6426a772 | 2770 | /* Perform the real interruption of the target execution, in response |
23860348 | 2771 | to a ^C. */ |
c5aa993b | 2772 | static void |
fba45db2 | 2773 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
2774 | { |
2775 | if (remote_debug) | |
2776 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
2777 | ||
2778 | target_stop (); | |
2779 | } | |
2780 | ||
2781 | /* Perform interrupt, if the first attempt did not succeed. Just give | |
23860348 | 2782 | up on the target alltogether. */ |
2df3850c | 2783 | void |
fba45db2 | 2784 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 2785 | { |
2df3850c JM |
2786 | if (remote_debug) |
2787 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt_twice called\n"); | |
6426a772 | 2788 | /* Do something only if the target was not killed by the previous |
23860348 | 2789 | cntl-C. */ |
6426a772 JM |
2790 | if (target_executing) |
2791 | { | |
2792 | interrupt_query (); | |
2793 | signal (SIGINT, handle_remote_sigint); | |
2794 | } | |
43ff13b4 JM |
2795 | } |
2796 | ||
2797 | /* Reinstall the usual SIGINT handlers, after the target has | |
23860348 | 2798 | stopped. */ |
6426a772 JM |
2799 | static void |
2800 | cleanup_sigint_signal_handler (void *dummy) | |
43ff13b4 JM |
2801 | { |
2802 | signal (SIGINT, handle_sigint); | |
2803 | if (sigint_remote_twice_token) | |
23860348 MS |
2804 | delete_async_signal_handler ((struct async_signal_handler **) |
2805 | &sigint_remote_twice_token); | |
43ff13b4 | 2806 | if (sigint_remote_token) |
23860348 MS |
2807 | delete_async_signal_handler ((struct async_signal_handler **) |
2808 | &sigint_remote_token); | |
43ff13b4 JM |
2809 | } |
2810 | ||
c906108c SS |
2811 | /* Send ^C to target to halt it. Target will respond, and send us a |
2812 | packet. */ | |
507f3c78 | 2813 | static void (*ofunc) (int); |
c906108c | 2814 | |
7a292a7a SS |
2815 | /* The command line interface's stop routine. This function is installed |
2816 | as a signal handler for SIGINT. The first time a user requests a | |
2817 | stop, we call remote_stop to send a break or ^C. If there is no | |
2818 | response from the target (it didn't stop when the user requested it), | |
23860348 | 2819 | we ask the user if he'd like to detach from the target. */ |
c906108c | 2820 | static void |
fba45db2 | 2821 | remote_interrupt (int signo) |
c906108c | 2822 | { |
23860348 | 2823 | /* If this doesn't work, try more severe steps. */ |
7a292a7a SS |
2824 | signal (signo, remote_interrupt_twice); |
2825 | ||
2826 | if (remote_debug) | |
0f71a2f6 | 2827 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); |
7a292a7a SS |
2828 | |
2829 | target_stop (); | |
2830 | } | |
2831 | ||
2832 | /* The user typed ^C twice. */ | |
2833 | ||
2834 | static void | |
fba45db2 | 2835 | remote_interrupt_twice (int signo) |
7a292a7a SS |
2836 | { |
2837 | signal (signo, ofunc); | |
2838 | interrupt_query (); | |
c906108c SS |
2839 | signal (signo, remote_interrupt); |
2840 | } | |
7a292a7a SS |
2841 | |
2842 | /* This is the generic stop called via the target vector. When a target | |
2843 | interrupt is requested, either by the command line or the GUI, we | |
23860348 | 2844 | will eventually end up here. */ |
c906108c | 2845 | static void |
fba45db2 | 2846 | remote_stop (void) |
c906108c | 2847 | { |
7a292a7a SS |
2848 | /* Send a break or a ^C, depending on user preference. */ |
2849 | if (remote_debug) | |
0f71a2f6 | 2850 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 2851 | |
7a292a7a | 2852 | if (remote_break) |
2cd58942 | 2853 | serial_send_break (remote_desc); |
c906108c | 2854 | else |
2cd58942 | 2855 | serial_write (remote_desc, "\003", 1); |
c906108c SS |
2856 | } |
2857 | ||
2858 | /* Ask the user what to do when an interrupt is received. */ | |
2859 | ||
2860 | static void | |
fba45db2 | 2861 | interrupt_query (void) |
c906108c SS |
2862 | { |
2863 | target_terminal_ours (); | |
2864 | ||
2865 | if (query ("Interrupted while waiting for the program.\n\ | |
2866 | Give up (and stop debugging it)? ")) | |
2867 | { | |
2868 | target_mourn_inferior (); | |
315a522e | 2869 | deprecated_throw_reason (RETURN_QUIT); |
c906108c SS |
2870 | } |
2871 | ||
2872 | target_terminal_inferior (); | |
2873 | } | |
2874 | ||
6426a772 JM |
2875 | /* Enable/disable target terminal ownership. Most targets can use |
2876 | terminal groups to control terminal ownership. Remote targets are | |
2877 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 2878 | is required. */ |
6426a772 JM |
2879 | |
2880 | static void | |
2881 | remote_async_terminal_inferior (void) | |
2882 | { | |
2883 | /* FIXME: cagney/1999-09-27: Shouldn't need to test for | |
2884 | sync_execution here. This function should only be called when | |
2885 | GDB is resuming the inferior in the forground. A background | |
2886 | resume (``run&'') should leave GDB in control of the terminal and | |
23860348 | 2887 | consequently should not call this code. */ |
6426a772 JM |
2888 | if (!sync_execution) |
2889 | return; | |
2890 | /* FIXME: cagney/1999-09-27: Closely related to the above. Make | |
2891 | calls target_terminal_*() idenpotent. The event-loop GDB talking | |
2892 | to an asynchronous target with a synchronous command calls this | |
2893 | function from both event-top.c and infrun.c/infcmd.c. Once GDB | |
2894 | stops trying to transfer the terminal to the target when it | |
2895 | shouldn't this guard can go away. */ | |
2896 | if (!remote_async_terminal_ours_p) | |
2897 | return; | |
2898 | delete_file_handler (input_fd); | |
2899 | remote_async_terminal_ours_p = 0; | |
2900 | initialize_sigint_signal_handler (); | |
2901 | /* NOTE: At this point we could also register our selves as the | |
2902 | recipient of all input. Any characters typed could then be | |
23860348 | 2903 | passed on down to the target. */ |
6426a772 JM |
2904 | } |
2905 | ||
2906 | static void | |
2907 | remote_async_terminal_ours (void) | |
2908 | { | |
23860348 | 2909 | /* See FIXME in remote_async_terminal_inferior. */ |
6426a772 JM |
2910 | if (!sync_execution) |
2911 | return; | |
23860348 | 2912 | /* See FIXME in remote_async_terminal_inferior. */ |
6426a772 JM |
2913 | if (remote_async_terminal_ours_p) |
2914 | return; | |
2915 | cleanup_sigint_signal_handler (NULL); | |
2916 | add_file_handler (input_fd, stdin_event_handler, 0); | |
2917 | remote_async_terminal_ours_p = 1; | |
2918 | } | |
2919 | ||
c906108c SS |
2920 | /* If nonzero, ignore the next kill. */ |
2921 | ||
2922 | int kill_kludge; | |
2923 | ||
2924 | void | |
917317f4 | 2925 | remote_console_output (char *msg) |
c906108c SS |
2926 | { |
2927 | char *p; | |
2928 | ||
c5aa993b | 2929 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
2930 | { |
2931 | char tb[2]; | |
2932 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
2933 | tb[0] = c; | |
2934 | tb[1] = 0; | |
43ff13b4 | 2935 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 2936 | } |
917317f4 | 2937 | gdb_flush (gdb_stdtarg); |
c906108c SS |
2938 | } |
2939 | ||
0f71a2f6 JM |
2940 | /* Wait until the remote machine stops, then return, |
2941 | storing status in STATUS just as `wait' would. | |
802188a7 | 2942 | Returns "pid", which in the case of a multi-threaded |
0f71a2f6 | 2943 | remote OS, is the thread-id. */ |
c906108c | 2944 | |
39f77062 KB |
2945 | static ptid_t |
2946 | remote_wait (ptid_t ptid, struct target_waitstatus *status) | |
c906108c | 2947 | { |
d01949b6 | 2948 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 2949 | struct remote_arch_state *rsa = get_remote_arch_state (); |
6d820c5c | 2950 | char *buf = rs->buf; |
b2dd6311 | 2951 | ULONGEST thread_num = -1; |
3c3bea1c | 2952 | ULONGEST addr; |
c906108c SS |
2953 | |
2954 | status->kind = TARGET_WAITKIND_EXITED; | |
2955 | status->value.integer = 0; | |
2956 | ||
2957 | while (1) | |
2958 | { | |
cfd77fa1 | 2959 | char *p; |
c906108c | 2960 | |
c906108c | 2961 | ofunc = signal (SIGINT, remote_interrupt); |
6d820c5c | 2962 | getpkt (&rs->buf, &rs->buf_size, 1); |
c906108c SS |
2963 | signal (SIGINT, ofunc); |
2964 | ||
2965 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 2966 | collection of trace data) every time the target stops. */ |
9a4105ab AC |
2967 | if (deprecated_target_wait_loop_hook) |
2968 | (*deprecated_target_wait_loop_hook) (); | |
c906108c | 2969 | |
3c3bea1c GS |
2970 | remote_stopped_by_watchpoint_p = 0; |
2971 | ||
c906108c SS |
2972 | switch (buf[0]) |
2973 | { | |
23860348 | 2974 | case 'E': /* Error of some sort. */ |
8a3fe4f8 | 2975 | warning (_("Remote failure reply: %s"), buf); |
c906108c | 2976 | continue; |
23860348 | 2977 | case 'F': /* File-I/O request. */ |
449092f6 CV |
2978 | remote_fileio_request (buf); |
2979 | continue; | |
23860348 | 2980 | case 'T': /* Status with PC, SP, FP, ... */ |
c906108c | 2981 | { |
cfd77fa1 | 2982 | gdb_byte regs[MAX_REGISTER_SIZE]; |
c906108c | 2983 | |
23860348 | 2984 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
c906108c | 2985 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where |
c5aa993b JM |
2986 | ss = signal number |
2987 | n... = register number | |
2988 | r... = register contents | |
2989 | */ | |
c906108c SS |
2990 | p = &buf[3]; /* after Txx */ |
2991 | ||
2992 | while (*p) | |
2993 | { | |
cfd77fa1 | 2994 | char *p1; |
c906108c | 2995 | char *p_temp; |
97345198 | 2996 | int fieldsize; |
3c3bea1c GS |
2997 | LONGEST pnum = 0; |
2998 | ||
23860348 MS |
2999 | /* If the packet contains a register number save it in |
3000 | pnum and set p1 to point to the character following | |
3001 | it. Otherwise p1 points to p. */ | |
c906108c | 3002 | |
23860348 MS |
3003 | /* If this packet is an awatch packet, don't parse the |
3004 | 'a' as a register number. */ | |
3c3bea1c GS |
3005 | |
3006 | if (strncmp (p, "awatch", strlen("awatch")) != 0) | |
3007 | { | |
3008 | /* Read the ``P'' register number. */ | |
3009 | pnum = strtol (p, &p_temp, 16); | |
cfd77fa1 | 3010 | p1 = p_temp; |
3c3bea1c | 3011 | } |
802188a7 | 3012 | else |
3c3bea1c | 3013 | p1 = p; |
c906108c | 3014 | |
23860348 | 3015 | if (p1 == p) /* No register number present here. */ |
c906108c | 3016 | { |
cfd77fa1 | 3017 | p1 = strchr (p, ':'); |
c906108c | 3018 | if (p1 == NULL) |
670aa98f | 3019 | error (_("Malformed packet(a) (missing colon): %s\n\ |
8a3fe4f8 | 3020 | Packet: '%s'\n"), |
670aa98f | 3021 | p, buf); |
3c3bea1c | 3022 | if (strncmp (p, "thread", p1 - p) == 0) |
c906108c SS |
3023 | { |
3024 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
3025 | record_currthread (thread_num); | |
cfd77fa1 | 3026 | p = p_temp; |
c906108c | 3027 | } |
3c3bea1c GS |
3028 | else if ((strncmp (p, "watch", p1 - p) == 0) |
3029 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
3030 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
3031 | { | |
3032 | remote_stopped_by_watchpoint_p = 1; | |
3033 | p = unpack_varlen_hex (++p1, &addr); | |
3034 | remote_watch_data_address = (CORE_ADDR)addr; | |
3035 | } | |
3036 | else | |
3037 | { | |
3038 | /* Silently skip unknown optional info. */ | |
3039 | p_temp = strchr (p1 + 1, ';'); | |
3040 | if (p_temp) | |
cfd77fa1 | 3041 | p = p_temp; |
3c3bea1c | 3042 | } |
c906108c SS |
3043 | } |
3044 | else | |
3045 | { | |
ea9c271d | 3046 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); |
c906108c SS |
3047 | p = p1; |
3048 | ||
3049 | if (*p++ != ':') | |
8a3fe4f8 AC |
3050 | error (_("Malformed packet(b) (missing colon): %s\n\ |
3051 | Packet: '%s'\n"), | |
3fcb8548 | 3052 | p, buf); |
c906108c | 3053 | |
ad10f812 | 3054 | if (reg == NULL) |
8a3fe4f8 AC |
3055 | error (_("Remote sent bad register number %s: %s\n\ |
3056 | Packet: '%s'\n"), | |
3fcb8548 | 3057 | phex_nz (pnum, 0), p, buf); |
c906108c | 3058 | |
cfd77fa1 | 3059 | fieldsize = hex2bin (p, regs, |
23860348 MS |
3060 | register_size (current_gdbarch, |
3061 | reg->regnum)); | |
97345198 | 3062 | p += 2 * fieldsize; |
23860348 MS |
3063 | if (fieldsize < register_size (current_gdbarch, |
3064 | reg->regnum)) | |
8a3fe4f8 | 3065 | warning (_("Remote reply is too short: %s"), buf); |
23860348 MS |
3066 | regcache_raw_supply (current_regcache, |
3067 | reg->regnum, regs); | |
c906108c SS |
3068 | } |
3069 | ||
3070 | if (*p++ != ';') | |
8a3fe4f8 | 3071 | error (_("Remote register badly formatted: %s\nhere: %s"), |
23860348 | 3072 | buf, p); |
c906108c SS |
3073 | } |
3074 | } | |
3075 | /* fall through */ | |
23860348 | 3076 | case 'S': /* Old style status, just signal only. */ |
c906108c SS |
3077 | status->kind = TARGET_WAITKIND_STOPPED; |
3078 | status->value.sig = (enum target_signal) | |
3079 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3080 | ||
0f71a2f6 JM |
3081 | if (buf[3] == 'p') |
3082 | { | |
0f71a2f6 JM |
3083 | thread_num = strtol ((const char *) &buf[4], NULL, 16); |
3084 | record_currthread (thread_num); | |
3085 | } | |
c906108c | 3086 | goto got_status; |
23860348 | 3087 | case 'W': /* Target exited. */ |
c906108c SS |
3088 | { |
3089 | /* The remote process exited. */ | |
3090 | status->kind = TARGET_WAITKIND_EXITED; | |
3091 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
3092 | goto got_status; | |
3093 | } | |
3094 | case 'X': | |
3095 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
3096 | status->value.sig = (enum target_signal) | |
3097 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3098 | kill_kludge = 1; | |
3099 | ||
3100 | goto got_status; | |
23860348 | 3101 | case 'O': /* Console output. */ |
c906108c SS |
3102 | remote_console_output (buf + 1); |
3103 | continue; | |
3104 | case '\0': | |
3105 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3106 | { | |
3107 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3108 | the remote system doesn't support it. */ |
c906108c SS |
3109 | target_terminal_ours_for_output (); |
3110 | printf_filtered | |
3111 | ("Can't send signals to this remote system. %s not sent.\n", | |
3112 | target_signal_to_name (last_sent_signal)); | |
3113 | last_sent_signal = TARGET_SIGNAL_0; | |
3114 | target_terminal_inferior (); | |
3115 | ||
3116 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3117 | putpkt ((char *) buf); | |
3118 | continue; | |
3119 | } | |
3120 | /* else fallthrough */ | |
3121 | default: | |
8a3fe4f8 | 3122 | warning (_("Invalid remote reply: %s"), buf); |
c906108c SS |
3123 | continue; |
3124 | } | |
3125 | } | |
c5aa993b | 3126 | got_status: |
c906108c SS |
3127 | if (thread_num != -1) |
3128 | { | |
39f77062 | 3129 | return pid_to_ptid (thread_num); |
c906108c | 3130 | } |
39f77062 | 3131 | return inferior_ptid; |
c906108c SS |
3132 | } |
3133 | ||
23860348 | 3134 | /* Async version of remote_wait. */ |
39f77062 KB |
3135 | static ptid_t |
3136 | remote_async_wait (ptid_t ptid, struct target_waitstatus *status) | |
43ff13b4 | 3137 | { |
d01949b6 | 3138 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 3139 | struct remote_arch_state *rsa = get_remote_arch_state (); |
6d820c5c | 3140 | char *buf = rs->buf; |
b2dd6311 | 3141 | ULONGEST thread_num = -1; |
3c3bea1c | 3142 | ULONGEST addr; |
43ff13b4 JM |
3143 | |
3144 | status->kind = TARGET_WAITKIND_EXITED; | |
3145 | status->value.integer = 0; | |
3146 | ||
3c3bea1c GS |
3147 | remote_stopped_by_watchpoint_p = 0; |
3148 | ||
43ff13b4 JM |
3149 | while (1) |
3150 | { | |
cfd77fa1 | 3151 | char *p; |
c5aa993b | 3152 | |
ed9a39eb | 3153 | if (!target_is_async_p ()) |
43ff13b4 | 3154 | ofunc = signal (SIGINT, remote_interrupt); |
6426a772 JM |
3155 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
3156 | _never_ wait for ever -> test on target_is_async_p(). | |
3157 | However, before we do that we need to ensure that the caller | |
23860348 | 3158 | knows how to take the target into/out of async mode. */ |
6d820c5c | 3159 | getpkt (&rs->buf, &rs->buf_size, wait_forever_enabled_p); |
ed9a39eb | 3160 | if (!target_is_async_p ()) |
43ff13b4 JM |
3161 | signal (SIGINT, ofunc); |
3162 | ||
3163 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 3164 | collection of trace data) every time the target stops. */ |
9a4105ab AC |
3165 | if (deprecated_target_wait_loop_hook) |
3166 | (*deprecated_target_wait_loop_hook) (); | |
43ff13b4 JM |
3167 | |
3168 | switch (buf[0]) | |
3169 | { | |
23860348 | 3170 | case 'E': /* Error of some sort. */ |
8a3fe4f8 | 3171 | warning (_("Remote failure reply: %s"), buf); |
43ff13b4 | 3172 | continue; |
23860348 | 3173 | case 'F': /* File-I/O request. */ |
449092f6 CV |
3174 | remote_fileio_request (buf); |
3175 | continue; | |
23860348 | 3176 | case 'T': /* Status with PC, SP, FP, ... */ |
43ff13b4 | 3177 | { |
cfd77fa1 | 3178 | gdb_byte regs[MAX_REGISTER_SIZE]; |
43ff13b4 | 3179 | |
23860348 | 3180 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
43ff13b4 | 3181 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where |
c5aa993b JM |
3182 | ss = signal number |
3183 | n... = register number | |
3184 | r... = register contents | |
3185 | */ | |
43ff13b4 JM |
3186 | p = &buf[3]; /* after Txx */ |
3187 | ||
3188 | while (*p) | |
3189 | { | |
cfd77fa1 | 3190 | char *p1; |
43ff13b4 | 3191 | char *p_temp; |
6c3f2dbf | 3192 | int fieldsize; |
3c3bea1c | 3193 | long pnum = 0; |
43ff13b4 | 3194 | |
23860348 MS |
3195 | /* If the packet contains a register number, save it |
3196 | in pnum and set p1 to point to the character | |
3197 | following it. Otherwise p1 points to p. */ | |
3c3bea1c GS |
3198 | |
3199 | /* If this packet is an awatch packet, don't parse the 'a' | |
3200 | as a register number. */ | |
802188a7 | 3201 | |
3c3bea1c GS |
3202 | if (!strncmp (p, "awatch", strlen ("awatch")) != 0) |
3203 | { | |
3204 | /* Read the register number. */ | |
3205 | pnum = strtol (p, &p_temp, 16); | |
cfd77fa1 | 3206 | p1 = p_temp; |
3c3bea1c | 3207 | } |
802188a7 | 3208 | else |
3c3bea1c | 3209 | p1 = p; |
43ff13b4 | 3210 | |
23860348 | 3211 | if (p1 == p) /* No register number present here. */ |
43ff13b4 | 3212 | { |
cfd77fa1 | 3213 | p1 = strchr (p, ':'); |
43ff13b4 | 3214 | if (p1 == NULL) |
8a3fe4f8 AC |
3215 | error (_("Malformed packet(a) (missing colon): %s\n\ |
3216 | Packet: '%s'\n"), | |
3fcb8548 | 3217 | p, buf); |
3c3bea1c | 3218 | if (strncmp (p, "thread", p1 - p) == 0) |
43ff13b4 JM |
3219 | { |
3220 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
3221 | record_currthread (thread_num); | |
cfd77fa1 | 3222 | p = p_temp; |
43ff13b4 | 3223 | } |
3c3bea1c GS |
3224 | else if ((strncmp (p, "watch", p1 - p) == 0) |
3225 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
3226 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
3227 | { | |
3228 | remote_stopped_by_watchpoint_p = 1; | |
3229 | p = unpack_varlen_hex (++p1, &addr); | |
3230 | remote_watch_data_address = (CORE_ADDR)addr; | |
3231 | } | |
3232 | else | |
3233 | { | |
3234 | /* Silently skip unknown optional info. */ | |
cfd77fa1 | 3235 | p_temp = strchr (p1 + 1, ';'); |
3c3bea1c GS |
3236 | if (p_temp) |
3237 | p = p_temp; | |
3238 | } | |
43ff13b4 | 3239 | } |
802188a7 | 3240 | |
43ff13b4 JM |
3241 | else |
3242 | { | |
ea9c271d | 3243 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); |
43ff13b4 | 3244 | p = p1; |
43ff13b4 | 3245 | if (*p++ != ':') |
8a3fe4f8 AC |
3246 | error (_("Malformed packet(b) (missing colon): %s\n\ |
3247 | Packet: '%s'\n"), | |
3fcb8548 | 3248 | p, buf); |
43ff13b4 | 3249 | |
ad10f812 | 3250 | if (reg == NULL) |
8a3fe4f8 AC |
3251 | error (_("Remote sent bad register number %ld: %s\n\ |
3252 | Packet: '%s'\n"), | |
3fcb8548 | 3253 | pnum, p, buf); |
43ff13b4 | 3254 | |
cfd77fa1 | 3255 | fieldsize = hex2bin (p, regs, |
23860348 MS |
3256 | register_size (current_gdbarch, |
3257 | reg->regnum)); | |
6c3f2dbf | 3258 | p += 2 * fieldsize; |
23860348 MS |
3259 | if (fieldsize < register_size (current_gdbarch, |
3260 | reg->regnum)) | |
8a3fe4f8 | 3261 | warning (_("Remote reply is too short: %s"), buf); |
23a6d369 | 3262 | regcache_raw_supply (current_regcache, reg->regnum, regs); |
43ff13b4 JM |
3263 | } |
3264 | ||
3265 | if (*p++ != ';') | |
8a3fe4f8 | 3266 | error (_("Remote register badly formatted: %s\nhere: %s"), |
0a2cfde4 | 3267 | buf, p); |
43ff13b4 JM |
3268 | } |
3269 | } | |
3270 | /* fall through */ | |
23860348 | 3271 | case 'S': /* Old style status, just signal only. */ |
43ff13b4 JM |
3272 | status->kind = TARGET_WAITKIND_STOPPED; |
3273 | status->value.sig = (enum target_signal) | |
3274 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3275 | ||
3276 | if (buf[3] == 'p') | |
3277 | { | |
43ff13b4 JM |
3278 | thread_num = strtol ((const char *) &buf[4], NULL, 16); |
3279 | record_currthread (thread_num); | |
3280 | } | |
43ff13b4 | 3281 | goto got_status; |
23860348 | 3282 | case 'W': /* Target exited. */ |
43ff13b4 JM |
3283 | { |
3284 | /* The remote process exited. */ | |
3285 | status->kind = TARGET_WAITKIND_EXITED; | |
3286 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
3287 | goto got_status; | |
3288 | } | |
3289 | case 'X': | |
3290 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
3291 | status->value.sig = (enum target_signal) | |
3292 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3293 | kill_kludge = 1; | |
3294 | ||
3295 | goto got_status; | |
23860348 | 3296 | case 'O': /* Console output. */ |
43ff13b4 | 3297 | remote_console_output (buf + 1); |
c4093a6a | 3298 | /* Return immediately to the event loop. The event loop will |
23860348 | 3299 | still be waiting on the inferior afterwards. */ |
c4093a6a JM |
3300 | status->kind = TARGET_WAITKIND_IGNORE; |
3301 | goto got_status; | |
43ff13b4 JM |
3302 | case '\0': |
3303 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3304 | { | |
3305 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3306 | the remote system doesn't support it. */ |
43ff13b4 JM |
3307 | target_terminal_ours_for_output (); |
3308 | printf_filtered | |
3309 | ("Can't send signals to this remote system. %s not sent.\n", | |
3310 | target_signal_to_name (last_sent_signal)); | |
3311 | last_sent_signal = TARGET_SIGNAL_0; | |
3312 | target_terminal_inferior (); | |
3313 | ||
3314 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3315 | putpkt ((char *) buf); | |
3316 | continue; | |
3317 | } | |
3318 | /* else fallthrough */ | |
3319 | default: | |
8a3fe4f8 | 3320 | warning (_("Invalid remote reply: %s"), buf); |
43ff13b4 JM |
3321 | continue; |
3322 | } | |
3323 | } | |
c5aa993b | 3324 | got_status: |
43ff13b4 JM |
3325 | if (thread_num != -1) |
3326 | { | |
39f77062 | 3327 | return pid_to_ptid (thread_num); |
43ff13b4 | 3328 | } |
39f77062 | 3329 | return inferior_ptid; |
43ff13b4 JM |
3330 | } |
3331 | ||
c906108c SS |
3332 | /* Number of bytes of registers this stub implements. */ |
3333 | ||
3334 | static int register_bytes_found; | |
3335 | ||
3336 | /* Read the remote registers into the block REGS. */ | |
ad10f812 | 3337 | /* Currently we just read all the registers, so we don't use regnum. */ |
c906108c | 3338 | |
b96ec7ac AC |
3339 | static int |
3340 | fetch_register_using_p (int regnum) | |
3341 | { | |
3342 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 3343 | char *buf = rs->buf, *p; |
b96ec7ac AC |
3344 | char regp[MAX_REGISTER_SIZE]; |
3345 | int i; | |
3346 | ||
fcad0fa4 JB |
3347 | p = buf; |
3348 | *p++ = 'p'; | |
3349 | p += hexnumstr (p, regnum); | |
3350 | *p++ = '\0'; | |
6d820c5c | 3351 | remote_send (&rs->buf, &rs->buf_size); |
3f9a994c JB |
3352 | |
3353 | /* If the stub didn't recognize the packet, or if we got an error, | |
3354 | tell our caller. */ | |
3355 | if (buf[0] == '\0' || buf[0] == 'E') | |
3356 | return 0; | |
3357 | ||
3358 | /* If this register is unfetchable, tell the regcache. */ | |
3359 | if (buf[0] == 'x') | |
8480adf2 | 3360 | { |
3f9a994c JB |
3361 | regcache_raw_supply (current_regcache, regnum, NULL); |
3362 | set_register_cached (regnum, -1); | |
8480adf2 | 3363 | return 1; |
b96ec7ac | 3364 | } |
b96ec7ac | 3365 | |
3f9a994c JB |
3366 | /* Otherwise, parse and supply the value. */ |
3367 | p = buf; | |
3368 | i = 0; | |
3369 | while (p[0] != 0) | |
3370 | { | |
3371 | if (p[1] == 0) | |
3372 | { | |
8a3fe4f8 | 3373 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
3374 | return 0; |
3375 | } | |
3376 | ||
3377 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3378 | p += 2; | |
3379 | } | |
3380 | regcache_raw_supply (current_regcache, regnum, regp); | |
3381 | return 1; | |
b96ec7ac AC |
3382 | } |
3383 | ||
c906108c | 3384 | static void |
ad10f812 | 3385 | remote_fetch_registers (int regnum) |
c906108c | 3386 | { |
d01949b6 | 3387 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 3388 | struct remote_arch_state *rsa = get_remote_arch_state (); |
6d820c5c | 3389 | char *buf = rs->buf; |
c906108c SS |
3390 | int i; |
3391 | char *p; | |
ea9c271d | 3392 | char *regs = alloca (rsa->sizeof_g_packet); |
c906108c | 3393 | |
39f77062 | 3394 | set_thread (PIDGET (inferior_ptid), 1); |
c906108c | 3395 | |
b323314b AC |
3396 | if (regnum >= 0) |
3397 | { | |
ea9c271d | 3398 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); |
b323314b AC |
3399 | gdb_assert (reg != NULL); |
3400 | if (!reg->in_g_packet) | |
3401 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 AC |
3402 | _("Attempt to fetch a non G-packet register when this " |
3403 | "remote.c does not support the p-packet.")); | |
b323314b | 3404 | } |
444abaca | 3405 | switch (remote_protocol_packets[PACKET_p].support) |
b96ec7ac AC |
3406 | { |
3407 | case PACKET_DISABLE: | |
3408 | break; | |
3409 | case PACKET_ENABLE: | |
3410 | if (fetch_register_using_p (regnum)) | |
3411 | return; | |
3412 | else | |
8a3fe4f8 | 3413 | error (_("Protocol error: p packet not recognized by stub")); |
b96ec7ac AC |
3414 | case PACKET_SUPPORT_UNKNOWN: |
3415 | if (fetch_register_using_p (regnum)) | |
3416 | { | |
3417 | /* The stub recognized the 'p' packet. Remember this. */ | |
444abaca | 3418 | remote_protocol_packets[PACKET_p].support = PACKET_ENABLE; |
b96ec7ac AC |
3419 | return; |
3420 | } | |
3421 | else | |
3422 | { | |
3423 | /* The stub does not support the 'P' packet. Use 'G' | |
3424 | instead, and don't try using 'P' in the future (it | |
3425 | will just waste our time). */ | |
444abaca | 3426 | remote_protocol_packets[PACKET_p].support = PACKET_DISABLE; |
b96ec7ac AC |
3427 | break; |
3428 | } | |
3429 | } | |
b323314b | 3430 | |
c906108c | 3431 | sprintf (buf, "g"); |
6d820c5c | 3432 | remote_send (&rs->buf, &rs->buf_size); |
c906108c | 3433 | |
11cf8741 JM |
3434 | /* Save the size of the packet sent to us by the target. Its used |
3435 | as a heuristic when determining the max size of packets that the | |
23860348 | 3436 | target can safely receive. */ |
ea9c271d DJ |
3437 | if ((rsa->actual_register_packet_size) == 0) |
3438 | (rsa->actual_register_packet_size) = strlen (buf); | |
c906108c SS |
3439 | |
3440 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 3441 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c SS |
3442 | |
3443 | /* We can get out of synch in various cases. If the first character | |
3444 | in the buffer is not a hex character, assume that has happened | |
3445 | and try to fetch another packet to read. */ | |
3446 | while ((buf[0] < '0' || buf[0] > '9') | |
3de11b2e | 3447 | && (buf[0] < 'A' || buf[0] > 'F') |
c906108c | 3448 | && (buf[0] < 'a' || buf[0] > 'f') |
23860348 | 3449 | && buf[0] != 'x') /* New: unavailable register value. */ |
c906108c SS |
3450 | { |
3451 | if (remote_debug) | |
0f71a2f6 JM |
3452 | fprintf_unfiltered (gdb_stdlog, |
3453 | "Bad register packet; fetching a new packet\n"); | |
6d820c5c | 3454 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c SS |
3455 | } |
3456 | ||
3457 | /* Reply describes registers byte by byte, each byte encoded as two | |
3458 | hex characters. Suck them all up, then supply them to the | |
3459 | register cacheing/storage mechanism. */ | |
3460 | ||
3461 | p = buf; | |
ea9c271d | 3462 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c SS |
3463 | { |
3464 | if (p[0] == 0) | |
3465 | break; | |
3466 | if (p[1] == 0) | |
3467 | { | |
8a3fe4f8 | 3468 | warning (_("Remote reply is of odd length: %s"), buf); |
c906108c SS |
3469 | /* Don't change register_bytes_found in this case, and don't |
3470 | print a second warning. */ | |
3471 | goto supply_them; | |
3472 | } | |
3473 | if (p[0] == 'x' && p[1] == 'x') | |
c5aa993b | 3474 | regs[i] = 0; /* 'x' */ |
c906108c SS |
3475 | else |
3476 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3477 | p += 2; | |
3478 | } | |
3479 | ||
3480 | if (i != register_bytes_found) | |
3481 | { | |
3482 | register_bytes_found = i; | |
2649061d AC |
3483 | if (REGISTER_BYTES_OK_P () |
3484 | && !REGISTER_BYTES_OK (i)) | |
8a3fe4f8 | 3485 | warning (_("Remote reply is too short: %s"), buf); |
c906108c | 3486 | } |
c5aa993b | 3487 | |
b323314b | 3488 | supply_them: |
ad10f812 | 3489 | { |
b323314b AC |
3490 | int i; |
3491 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) | |
ad10f812 | 3492 | { |
ea9c271d | 3493 | struct packet_reg *r = &rsa->regs[i]; |
b323314b AC |
3494 | if (r->in_g_packet) |
3495 | { | |
8ccc1287 AC |
3496 | if (r->offset * 2 >= strlen (buf)) |
3497 | /* A short packet that didn't include the register's | |
3498 | value, this implies that the register is zero (and | |
3499 | not that the register is unavailable). Supply that | |
3500 | zero value. */ | |
3501 | regcache_raw_supply (current_regcache, r->regnum, NULL); | |
3502 | else if (buf[r->offset * 2] == 'x') | |
3503 | { | |
3504 | gdb_assert (r->offset * 2 < strlen (buf)); | |
3505 | /* The register isn't available, mark it as such (at | |
3506 | the same time setting the value to zero). */ | |
3507 | regcache_raw_supply (current_regcache, r->regnum, NULL); | |
3508 | set_register_cached (i, -1); | |
3509 | } | |
3510 | else | |
3511 | regcache_raw_supply (current_regcache, r->regnum, | |
3512 | regs + r->offset); | |
b323314b | 3513 | } |
ad10f812 AC |
3514 | } |
3515 | } | |
c906108c SS |
3516 | } |
3517 | ||
3518 | /* Prepare to store registers. Since we may send them all (using a | |
3519 | 'G' request), we have to read out the ones we don't want to change | |
3520 | first. */ | |
3521 | ||
c5aa993b | 3522 | static void |
fba45db2 | 3523 | remote_prepare_to_store (void) |
c906108c | 3524 | { |
ea9c271d | 3525 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cf0e1e0d | 3526 | int i; |
cfd77fa1 | 3527 | gdb_byte buf[MAX_REGISTER_SIZE]; |
cf0e1e0d | 3528 | |
c906108c | 3529 | /* Make sure the entire registers array is valid. */ |
444abaca | 3530 | switch (remote_protocol_packets[PACKET_P].support) |
5a2468f5 JM |
3531 | { |
3532 | case PACKET_DISABLE: | |
3533 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d DJ |
3534 | /* Make sure all the necessary registers are cached. */ |
3535 | for (i = 0; i < NUM_REGS; i++) | |
ea9c271d DJ |
3536 | if (rsa->regs[i].in_g_packet) |
3537 | regcache_raw_read (current_regcache, rsa->regs[i].regnum, buf); | |
5a2468f5 JM |
3538 | break; |
3539 | case PACKET_ENABLE: | |
3540 | break; | |
3541 | } | |
3542 | } | |
3543 | ||
ad10f812 | 3544 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 3545 | packet was not recognized. */ |
5a2468f5 JM |
3546 | |
3547 | static int | |
ad10f812 | 3548 | store_register_using_P (int regnum) |
5a2468f5 | 3549 | { |
d01949b6 | 3550 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
3551 | struct remote_arch_state *rsa = get_remote_arch_state (); |
3552 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
5a2468f5 | 3553 | /* Try storing a single register. */ |
6d820c5c | 3554 | char *buf = rs->buf; |
cfd77fa1 | 3555 | gdb_byte regp[MAX_REGISTER_SIZE]; |
5a2468f5 | 3556 | char *p; |
5a2468f5 | 3557 | |
ea9c271d | 3558 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 3559 | p = buf + strlen (buf); |
822c9732 | 3560 | regcache_raw_collect (current_regcache, reg->regnum, regp); |
3acba339 | 3561 | bin2hex (regp, p, register_size (current_gdbarch, reg->regnum)); |
6d820c5c | 3562 | remote_send (&rs->buf, &rs->buf_size); |
5a2468f5 JM |
3563 | |
3564 | return buf[0] != '\0'; | |
c906108c SS |
3565 | } |
3566 | ||
5a2468f5 | 3567 | |
23860348 MS |
3568 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
3569 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
3570 | |
3571 | static void | |
ad10f812 | 3572 | remote_store_registers (int regnum) |
c906108c | 3573 | { |
d01949b6 | 3574 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 3575 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cfd77fa1 | 3576 | gdb_byte *regs; |
c906108c SS |
3577 | char *p; |
3578 | ||
39f77062 | 3579 | set_thread (PIDGET (inferior_ptid), 1); |
c906108c | 3580 | |
ad10f812 | 3581 | if (regnum >= 0) |
c906108c | 3582 | { |
444abaca | 3583 | switch (remote_protocol_packets[PACKET_P].support) |
c906108c | 3584 | { |
5a2468f5 JM |
3585 | case PACKET_DISABLE: |
3586 | break; | |
3587 | case PACKET_ENABLE: | |
ad10f812 | 3588 | if (store_register_using_P (regnum)) |
5a2468f5 JM |
3589 | return; |
3590 | else | |
8a3fe4f8 | 3591 | error (_("Protocol error: P packet not recognized by stub")); |
5a2468f5 | 3592 | case PACKET_SUPPORT_UNKNOWN: |
ad10f812 | 3593 | if (store_register_using_P (regnum)) |
5a2468f5 JM |
3594 | { |
3595 | /* The stub recognized the 'P' packet. Remember this. */ | |
444abaca | 3596 | remote_protocol_packets[PACKET_P].support = PACKET_ENABLE; |
5a2468f5 JM |
3597 | return; |
3598 | } | |
3599 | else | |
3600 | { | |
3601 | /* The stub does not support the 'P' packet. Use 'G' | |
3602 | instead, and don't try using 'P' in the future (it | |
3603 | will just waste our time). */ | |
444abaca | 3604 | remote_protocol_packets[PACKET_P].support = PACKET_DISABLE; |
5a2468f5 JM |
3605 | break; |
3606 | } | |
c906108c | 3607 | } |
c906108c SS |
3608 | } |
3609 | ||
193cb69f AC |
3610 | /* Extract all the registers in the regcache copying them into a |
3611 | local buffer. */ | |
3612 | { | |
b323314b | 3613 | int i; |
ea9c271d DJ |
3614 | regs = alloca (rsa->sizeof_g_packet); |
3615 | memset (regs, 0, rsa->sizeof_g_packet); | |
b323314b | 3616 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) |
193cb69f | 3617 | { |
ea9c271d | 3618 | struct packet_reg *r = &rsa->regs[i]; |
b323314b | 3619 | if (r->in_g_packet) |
822c9732 | 3620 | regcache_raw_collect (current_regcache, r->regnum, regs + r->offset); |
193cb69f AC |
3621 | } |
3622 | } | |
c906108c SS |
3623 | |
3624 | /* Command describes registers byte by byte, | |
3625 | each byte encoded as two hex characters. */ | |
6d820c5c | 3626 | p = rs->buf; |
193cb69f | 3627 | *p++ = 'G'; |
c906108c | 3628 | /* remote_prepare_to_store insures that register_bytes_found gets set. */ |
30559e10 | 3629 | bin2hex (regs, p, register_bytes_found); |
6d820c5c | 3630 | remote_send (&rs->buf, &rs->buf_size); |
c906108c | 3631 | } |
c906108c SS |
3632 | \f |
3633 | ||
3634 | /* Return the number of hex digits in num. */ | |
3635 | ||
3636 | static int | |
fba45db2 | 3637 | hexnumlen (ULONGEST num) |
c906108c SS |
3638 | { |
3639 | int i; | |
3640 | ||
3641 | for (i = 0; num != 0; i++) | |
3642 | num >>= 4; | |
3643 | ||
3644 | return max (i, 1); | |
3645 | } | |
3646 | ||
2df3850c | 3647 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
3648 | |
3649 | static int | |
fba45db2 | 3650 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 3651 | { |
c906108c | 3652 | int len = hexnumlen (num); |
2df3850c JM |
3653 | return hexnumnstr (buf, num, len); |
3654 | } | |
3655 | ||
c906108c | 3656 | |
2df3850c | 3657 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 3658 | |
2df3850c | 3659 | static int |
fba45db2 | 3660 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
3661 | { |
3662 | int i; | |
3663 | ||
3664 | buf[width] = '\0'; | |
3665 | ||
3666 | for (i = width - 1; i >= 0; i--) | |
c906108c | 3667 | { |
c5aa993b | 3668 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
3669 | num >>= 4; |
3670 | } | |
3671 | ||
2df3850c | 3672 | return width; |
c906108c SS |
3673 | } |
3674 | ||
23860348 | 3675 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
3676 | |
3677 | static CORE_ADDR | |
fba45db2 | 3678 | remote_address_masked (CORE_ADDR addr) |
c906108c SS |
3679 | { |
3680 | if (remote_address_size > 0 | |
3681 | && remote_address_size < (sizeof (ULONGEST) * 8)) | |
3682 | { | |
3683 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 3684 | in a ULONGEST variable. */ |
c906108c SS |
3685 | ULONGEST mask = 1; |
3686 | mask = (mask << remote_address_size) - 1; | |
3687 | addr &= mask; | |
3688 | } | |
3689 | return addr; | |
3690 | } | |
3691 | ||
3692 | /* Determine whether the remote target supports binary downloading. | |
3693 | This is accomplished by sending a no-op memory write of zero length | |
3694 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
3695 | the whole packet, since many stubs strip the eighth bit and |
3696 | subsequently compute a wrong checksum, which causes real havoc with | |
3697 | remote_write_bytes. | |
7a292a7a | 3698 | |
96baa820 JM |
3699 | NOTE: This can still lose if the serial line is not eight-bit |
3700 | clean. In cases like this, the user should clear "remote | |
23860348 | 3701 | X-packet". */ |
96baa820 | 3702 | |
c906108c | 3703 | static void |
fba45db2 | 3704 | check_binary_download (CORE_ADDR addr) |
c906108c | 3705 | { |
d01949b6 | 3706 | struct remote_state *rs = get_remote_state (); |
24b06219 | 3707 | |
444abaca | 3708 | switch (remote_protocol_packets[PACKET_X].support) |
c906108c | 3709 | { |
96baa820 JM |
3710 | case PACKET_DISABLE: |
3711 | break; | |
3712 | case PACKET_ENABLE: | |
3713 | break; | |
3714 | case PACKET_SUPPORT_UNKNOWN: | |
3715 | { | |
6d820c5c | 3716 | char *buf = rs->buf; |
96baa820 | 3717 | char *p; |
802188a7 | 3718 | |
96baa820 JM |
3719 | p = buf; |
3720 | *p++ = 'X'; | |
3721 | p += hexnumstr (p, (ULONGEST) addr); | |
3722 | *p++ = ','; | |
3723 | p += hexnumstr (p, (ULONGEST) 0); | |
3724 | *p++ = ':'; | |
3725 | *p = '\0'; | |
802188a7 | 3726 | |
96baa820 | 3727 | putpkt_binary (buf, (int) (p - buf)); |
6d820c5c | 3728 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 3729 | |
96baa820 JM |
3730 | if (buf[0] == '\0') |
3731 | { | |
3732 | if (remote_debug) | |
3733 | fprintf_unfiltered (gdb_stdlog, | |
3734 | "binary downloading NOT suppported by target\n"); | |
444abaca | 3735 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
3736 | } |
3737 | else | |
3738 | { | |
3739 | if (remote_debug) | |
3740 | fprintf_unfiltered (gdb_stdlog, | |
3741 | "binary downloading suppported by target\n"); | |
444abaca | 3742 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
3743 | } |
3744 | break; | |
3745 | } | |
c906108c SS |
3746 | } |
3747 | } | |
3748 | ||
3749 | /* Write memory data directly to the remote machine. | |
3750 | This does not inform the data cache; the data cache uses this. | |
3751 | MEMADDR is the address in the remote memory space. | |
3752 | MYADDR is the address of the buffer in our space. | |
3753 | LEN is the number of bytes. | |
3754 | ||
917317f4 | 3755 | Returns number of bytes transferred, or 0 (setting errno) for |
23860348 | 3756 | error. Only transfer a single packet. */ |
c906108c | 3757 | |
449092f6 | 3758 | int |
cfd77fa1 | 3759 | remote_write_bytes (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
c906108c | 3760 | { |
6d820c5c | 3761 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 DJ |
3762 | char *buf; |
3763 | char *p; | |
3764 | char *plen; | |
917317f4 JM |
3765 | int plenlen; |
3766 | int todo; | |
3767 | int nr_bytes; | |
a257b5bb | 3768 | int payload_size; |
cfd77fa1 | 3769 | char *payload_start; |
c906108c | 3770 | |
a257b5bb | 3771 | /* Verify that the target can support a binary download. */ |
c906108c SS |
3772 | check_binary_download (memaddr); |
3773 | ||
3de11b2e NS |
3774 | payload_size = get_memory_write_packet_size (); |
3775 | ||
6d820c5c DJ |
3776 | /* The packet buffer will be large enough for the payload; |
3777 | get_memory_packet_size ensures this. */ | |
3778 | buf = rs->buf; | |
c906108c | 3779 | |
a257b5bb | 3780 | /* Compute the size of the actual payload by subtracting out the |
3de11b2e NS |
3781 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". |
3782 | */ | |
3783 | payload_size -= strlen ("$M,:#NN"); | |
3784 | payload_size -= hexnumlen (memaddr); | |
c906108c | 3785 | |
a257b5bb | 3786 | /* Construct the packet header: "[MX]<memaddr>,<len>:". */ |
917317f4 | 3787 | |
a257b5bb | 3788 | /* Append "[XM]". Compute a best guess of the number of bytes |
23860348 | 3789 | actually transfered. */ |
a257b5bb | 3790 | p = buf; |
444abaca | 3791 | switch (remote_protocol_packets[PACKET_X].support) |
c906108c | 3792 | { |
917317f4 JM |
3793 | case PACKET_ENABLE: |
3794 | *p++ = 'X'; | |
23860348 | 3795 | /* Best guess at number of bytes that will fit. */ |
a257b5bb | 3796 | todo = min (len, payload_size); |
3de11b2e NS |
3797 | payload_size -= hexnumlen (todo); |
3798 | todo = min (todo, payload_size); | |
917317f4 JM |
3799 | break; |
3800 | case PACKET_DISABLE: | |
3801 | *p++ = 'M'; | |
23860348 | 3802 | /* Num bytes that will fit. */ |
a257b5bb | 3803 | todo = min (len, payload_size / 2); |
3de11b2e NS |
3804 | payload_size -= hexnumlen (todo); |
3805 | todo = min (todo, payload_size / 2); | |
917317f4 JM |
3806 | break; |
3807 | case PACKET_SUPPORT_UNKNOWN: | |
8e65ff28 | 3808 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3809 | _("remote_write_bytes: bad internal state")); |
7f7e9482 | 3810 | default: |
e2e0b3e5 | 3811 | internal_error (__FILE__, __LINE__, _("bad switch")); |
917317f4 | 3812 | } |
3de11b2e NS |
3813 | if (todo <= 0) |
3814 | internal_error (__FILE__, __LINE__, | |
3815 | _("minumum packet size too small to write data")); | |
802188a7 | 3816 | |
a257b5bb | 3817 | /* Append "<memaddr>". */ |
917317f4 JM |
3818 | memaddr = remote_address_masked (memaddr); |
3819 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb AC |
3820 | |
3821 | /* Append ",". */ | |
917317f4 | 3822 | *p++ = ','; |
802188a7 | 3823 | |
a257b5bb AC |
3824 | /* Append <len>. Retain the location/size of <len>. It may need to |
3825 | be adjusted once the packet body has been created. */ | |
917317f4 JM |
3826 | plen = p; |
3827 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
3828 | p += plenlen; | |
a257b5bb AC |
3829 | |
3830 | /* Append ":". */ | |
917317f4 JM |
3831 | *p++ = ':'; |
3832 | *p = '\0'; | |
802188a7 | 3833 | |
a257b5bb AC |
3834 | /* Append the packet body. */ |
3835 | payload_start = p; | |
444abaca | 3836 | switch (remote_protocol_packets[PACKET_X].support) |
917317f4 JM |
3837 | { |
3838 | case PACKET_ENABLE: | |
3839 | /* Binary mode. Send target system values byte by byte, in | |
3840 | increasing byte addresses. Only escape certain critical | |
3841 | characters. */ | |
3842 | for (nr_bytes = 0; | |
a257b5bb | 3843 | (nr_bytes < todo) && (p - payload_start) < payload_size; |
917317f4 | 3844 | nr_bytes++) |
c906108c | 3845 | { |
917317f4 JM |
3846 | switch (myaddr[nr_bytes] & 0xff) |
3847 | { | |
3848 | case '$': | |
3849 | case '#': | |
3850 | case 0x7d: | |
23860348 | 3851 | /* These must be escaped. */ |
917317f4 JM |
3852 | *p++ = 0x7d; |
3853 | *p++ = (myaddr[nr_bytes] & 0xff) ^ 0x20; | |
3854 | break; | |
3855 | default: | |
3856 | *p++ = myaddr[nr_bytes] & 0xff; | |
3857 | break; | |
3858 | } | |
c906108c | 3859 | } |
917317f4 | 3860 | if (nr_bytes < todo) |
c906108c | 3861 | { |
802188a7 | 3862 | /* Escape chars have filled up the buffer prematurely, |
917317f4 JM |
3863 | and we have actually sent fewer bytes than planned. |
3864 | Fix-up the length field of the packet. Use the same | |
3865 | number of characters as before. */ | |
917317f4 JM |
3866 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); |
3867 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 3868 | } |
917317f4 JM |
3869 | break; |
3870 | case PACKET_DISABLE: | |
3871 | /* Normal mode: Send target system values byte by byte, in | |
3872 | increasing byte addresses. Each byte is encoded as a two hex | |
3873 | value. */ | |
2644f393 | 3874 | nr_bytes = bin2hex (myaddr, p, todo); |
aa6c0017 | 3875 | p += 2 * nr_bytes; |
917317f4 JM |
3876 | break; |
3877 | case PACKET_SUPPORT_UNKNOWN: | |
8e65ff28 | 3878 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3879 | _("remote_write_bytes: bad internal state")); |
7f7e9482 | 3880 | default: |
e2e0b3e5 | 3881 | internal_error (__FILE__, __LINE__, _("bad switch")); |
c906108c | 3882 | } |
802188a7 | 3883 | |
917317f4 | 3884 | putpkt_binary (buf, (int) (p - buf)); |
6d820c5c | 3885 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 3886 | |
917317f4 JM |
3887 | if (buf[0] == 'E') |
3888 | { | |
3889 | /* There is no correspondance between what the remote protocol | |
3890 | uses for errors and errno codes. We would like a cleaner way | |
3891 | of representing errors (big enough to include errno codes, | |
3892 | bfd_error codes, and others). But for now just return EIO. */ | |
3893 | errno = EIO; | |
3894 | return 0; | |
3895 | } | |
802188a7 | 3896 | |
23860348 MS |
3897 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send |
3898 | fewer bytes than we'd planned. */ | |
917317f4 | 3899 | return nr_bytes; |
c906108c SS |
3900 | } |
3901 | ||
3902 | /* Read memory data directly from the remote machine. | |
3903 | This does not use the data cache; the data cache uses this. | |
3904 | MEMADDR is the address in the remote memory space. | |
3905 | MYADDR is the address of the buffer in our space. | |
3906 | LEN is the number of bytes. | |
3907 | ||
3908 | Returns number of bytes transferred, or 0 for error. */ | |
3909 | ||
917317f4 JM |
3910 | /* NOTE: cagney/1999-10-18: This function (and its siblings in other |
3911 | remote targets) shouldn't attempt to read the entire buffer. | |
3912 | Instead it should read a single packet worth of data and then | |
3913 | return the byte size of that packet to the caller. The caller (its | |
3914 | caller and its callers caller ;-) already contains code for | |
23860348 | 3915 | handling partial reads. */ |
917317f4 | 3916 | |
449092f6 | 3917 | int |
cfd77fa1 | 3918 | remote_read_bytes (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
c906108c | 3919 | { |
6d820c5c | 3920 | struct remote_state *rs = get_remote_state (); |
11cf8741 | 3921 | char *buf; |
23860348 | 3922 | int max_buf_size; /* Max size of packet output buffer. */ |
c906108c SS |
3923 | int origlen; |
3924 | ||
11cf8741 | 3925 | max_buf_size = get_memory_read_packet_size (); |
6d820c5c DJ |
3926 | /* The packet buffer will be large enough for the payload; |
3927 | get_memory_packet_size ensures this. */ | |
3928 | buf = rs->buf; | |
c906108c SS |
3929 | |
3930 | origlen = len; | |
3931 | while (len > 0) | |
3932 | { | |
c906108c SS |
3933 | char *p; |
3934 | int todo; | |
3935 | int i; | |
3936 | ||
c5aa993b | 3937 | todo = min (len, max_buf_size / 2); /* num bytes that will fit */ |
c906108c SS |
3938 | |
3939 | /* construct "m"<memaddr>","<len>" */ | |
3940 | /* sprintf (buf, "m%lx,%x", (unsigned long) memaddr, todo); */ | |
3941 | memaddr = remote_address_masked (memaddr); | |
3942 | p = buf; | |
3943 | *p++ = 'm'; | |
3944 | p += hexnumstr (p, (ULONGEST) memaddr); | |
3945 | *p++ = ','; | |
3946 | p += hexnumstr (p, (ULONGEST) todo); | |
3947 | *p = '\0'; | |
3948 | ||
3949 | putpkt (buf); | |
6d820c5c | 3950 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 3951 | |
66504d44 MS |
3952 | if (buf[0] == 'E' |
3953 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
3954 | && buf[3] == '\0') | |
c906108c | 3955 | { |
23860348 MS |
3956 | /* There is no correspondance between what the remote |
3957 | protocol uses for errors and errno codes. We would like | |
3958 | a cleaner way of representing errors (big enough to | |
3959 | include errno codes, bfd_error codes, and others). But | |
3960 | for now just return EIO. */ | |
c906108c SS |
3961 | errno = EIO; |
3962 | return 0; | |
3963 | } | |
3964 | ||
c5aa993b JM |
3965 | /* Reply describes memory byte by byte, |
3966 | each byte encoded as two hex characters. */ | |
c906108c SS |
3967 | |
3968 | p = buf; | |
30559e10 | 3969 | if ((i = hex2bin (p, myaddr, todo)) < todo) |
c906108c | 3970 | { |
30559e10 | 3971 | /* Reply is short. This means that we were able to read |
23860348 | 3972 | only part of what we wanted to. */ |
30559e10 | 3973 | return i + (origlen - len); |
c906108c SS |
3974 | } |
3975 | myaddr += todo; | |
3976 | memaddr += todo; | |
3977 | len -= todo; | |
3978 | } | |
3979 | return origlen; | |
3980 | } | |
3981 | \f | |
3982 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
23860348 MS |
3983 | transferring to or from debugger address BUFFER. Write to inferior |
3984 | if SHOULD_WRITE is nonzero. Returns length of data written or | |
3985 | read; 0 for error. TARGET is unused. */ | |
392a587b | 3986 | |
c906108c | 3987 | static int |
961cb7b5 | 3988 | remote_xfer_memory (CORE_ADDR mem_addr, gdb_byte *buffer, int mem_len, |
0a65a603 | 3989 | int should_write, struct mem_attrib *attrib, |
29e57380 | 3990 | struct target_ops *target) |
c906108c | 3991 | { |
392a587b JM |
3992 | CORE_ADDR targ_addr; |
3993 | int targ_len; | |
4930751a C |
3994 | int res; |
3995 | ||
f6684c31 | 3996 | /* Should this be the selected frame? */ |
23860348 MS |
3997 | gdbarch_remote_translate_xfer_address (current_gdbarch, |
3998 | current_regcache, | |
f6684c31 AC |
3999 | mem_addr, mem_len, |
4000 | &targ_addr, &targ_len); | |
392a587b | 4001 | if (targ_len <= 0) |
c906108c | 4002 | return 0; |
c906108c | 4003 | |
4930751a C |
4004 | if (should_write) |
4005 | res = remote_write_bytes (targ_addr, buffer, targ_len); | |
4006 | else | |
4007 | res = remote_read_bytes (targ_addr, buffer, targ_len); | |
4008 | ||
4009 | return res; | |
c906108c SS |
4010 | } |
4011 | ||
c906108c | 4012 | static void |
fba45db2 | 4013 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
4014 | { |
4015 | puts_filtered ("Debugging a target over a serial line.\n"); | |
4016 | } | |
4017 | \f | |
4018 | /* Stuff for dealing with the packets which are part of this protocol. | |
4019 | See comment at top of file for details. */ | |
4020 | ||
23860348 MS |
4021 | /* Read a single character from the remote end, masking it down to 7 |
4022 | bits. */ | |
c906108c SS |
4023 | |
4024 | static int | |
fba45db2 | 4025 | readchar (int timeout) |
c906108c SS |
4026 | { |
4027 | int ch; | |
4028 | ||
2cd58942 | 4029 | ch = serial_readchar (remote_desc, timeout); |
c906108c | 4030 | |
2acceee2 JM |
4031 | if (ch >= 0) |
4032 | return (ch & 0x7f); | |
4033 | ||
4034 | switch ((enum serial_rc) ch) | |
c906108c SS |
4035 | { |
4036 | case SERIAL_EOF: | |
2acceee2 | 4037 | target_mourn_inferior (); |
8a3fe4f8 | 4038 | error (_("Remote connection closed")); |
2acceee2 | 4039 | /* no return */ |
c906108c | 4040 | case SERIAL_ERROR: |
e2e0b3e5 | 4041 | perror_with_name (_("Remote communication error")); |
2acceee2 | 4042 | /* no return */ |
c906108c | 4043 | case SERIAL_TIMEOUT: |
2acceee2 | 4044 | break; |
c906108c | 4045 | } |
2acceee2 | 4046 | return ch; |
c906108c SS |
4047 | } |
4048 | ||
6d820c5c DJ |
4049 | /* Send the command in *BUF to the remote machine, and read the reply |
4050 | into *BUF. Report an error if we get an error reply. Resize | |
4051 | *BUF using xrealloc if necessary to hold the result, and update | |
4052 | *SIZEOF_BUF. */ | |
c906108c SS |
4053 | |
4054 | static void | |
6d820c5c DJ |
4055 | remote_send (char **buf, |
4056 | long *sizeof_buf) | |
c906108c | 4057 | { |
6d820c5c | 4058 | putpkt (*buf); |
c2d11a7d | 4059 | getpkt (buf, sizeof_buf, 0); |
c906108c | 4060 | |
6d820c5c DJ |
4061 | if ((*buf)[0] == 'E') |
4062 | error (_("Remote failure reply: %s"), *buf); | |
c906108c SS |
4063 | } |
4064 | ||
4065 | /* Display a null-terminated packet on stdout, for debugging, using C | |
4066 | string notation. */ | |
4067 | ||
4068 | static void | |
fba45db2 | 4069 | print_packet (char *buf) |
c906108c SS |
4070 | { |
4071 | puts_filtered ("\""); | |
43e526b9 | 4072 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
4073 | puts_filtered ("\""); |
4074 | } | |
4075 | ||
4076 | int | |
fba45db2 | 4077 | putpkt (char *buf) |
c906108c SS |
4078 | { |
4079 | return putpkt_binary (buf, strlen (buf)); | |
4080 | } | |
4081 | ||
4082 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 4083 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 4084 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
4085 | and for a possible /0 if we are debugging (remote_debug) and want |
4086 | to print the sent packet as a string. */ | |
c906108c SS |
4087 | |
4088 | static int | |
fba45db2 | 4089 | putpkt_binary (char *buf, int cnt) |
c906108c SS |
4090 | { |
4091 | int i; | |
4092 | unsigned char csum = 0; | |
11cf8741 | 4093 | char *buf2 = alloca (cnt + 6); |
085dd6e6 | 4094 | |
c906108c SS |
4095 | int ch; |
4096 | int tcount = 0; | |
4097 | char *p; | |
4098 | ||
4099 | /* Copy the packet into buffer BUF2, encapsulating it | |
4100 | and giving it a checksum. */ | |
4101 | ||
c906108c SS |
4102 | p = buf2; |
4103 | *p++ = '$'; | |
4104 | ||
4105 | for (i = 0; i < cnt; i++) | |
4106 | { | |
4107 | csum += buf[i]; | |
4108 | *p++ = buf[i]; | |
4109 | } | |
4110 | *p++ = '#'; | |
4111 | *p++ = tohex ((csum >> 4) & 0xf); | |
4112 | *p++ = tohex (csum & 0xf); | |
4113 | ||
4114 | /* Send it over and over until we get a positive ack. */ | |
4115 | ||
4116 | while (1) | |
4117 | { | |
4118 | int started_error_output = 0; | |
4119 | ||
4120 | if (remote_debug) | |
4121 | { | |
4122 | *p = '\0'; | |
43e526b9 JM |
4123 | fprintf_unfiltered (gdb_stdlog, "Sending packet: "); |
4124 | fputstrn_unfiltered (buf2, p - buf2, 0, gdb_stdlog); | |
d4f3574e | 4125 | fprintf_unfiltered (gdb_stdlog, "..."); |
0f71a2f6 | 4126 | gdb_flush (gdb_stdlog); |
c906108c | 4127 | } |
2cd58942 | 4128 | if (serial_write (remote_desc, buf2, p - buf2)) |
e2e0b3e5 | 4129 | perror_with_name (_("putpkt: write failed")); |
c906108c | 4130 | |
23860348 | 4131 | /* Read until either a timeout occurs (-2) or '+' is read. */ |
c906108c SS |
4132 | while (1) |
4133 | { | |
4134 | ch = readchar (remote_timeout); | |
4135 | ||
c5aa993b | 4136 | if (remote_debug) |
c906108c SS |
4137 | { |
4138 | switch (ch) | |
4139 | { | |
4140 | case '+': | |
1216fa2c | 4141 | case '-': |
c906108c SS |
4142 | case SERIAL_TIMEOUT: |
4143 | case '$': | |
4144 | if (started_error_output) | |
4145 | { | |
4146 | putchar_unfiltered ('\n'); | |
4147 | started_error_output = 0; | |
4148 | } | |
4149 | } | |
4150 | } | |
4151 | ||
4152 | switch (ch) | |
4153 | { | |
4154 | case '+': | |
4155 | if (remote_debug) | |
0f71a2f6 | 4156 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 4157 | return 1; |
1216fa2c AC |
4158 | case '-': |
4159 | if (remote_debug) | |
4160 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
c906108c | 4161 | case SERIAL_TIMEOUT: |
c5aa993b | 4162 | tcount++; |
c906108c SS |
4163 | if (tcount > 3) |
4164 | return 0; | |
23860348 | 4165 | break; /* Retransmit buffer. */ |
c906108c SS |
4166 | case '$': |
4167 | { | |
40e3f985 | 4168 | if (remote_debug) |
23860348 MS |
4169 | fprintf_unfiltered (gdb_stdlog, |
4170 | "Packet instead of Ack, ignoring it\n"); | |
d6f7abdf AC |
4171 | /* It's probably an old response sent because an ACK |
4172 | was lost. Gobble up the packet and ack it so it | |
4173 | doesn't get retransmitted when we resend this | |
4174 | packet. */ | |
6d820c5c | 4175 | skip_frame (); |
d6f7abdf | 4176 | serial_write (remote_desc, "+", 1); |
23860348 | 4177 | continue; /* Now, go look for +. */ |
c906108c SS |
4178 | } |
4179 | default: | |
4180 | if (remote_debug) | |
4181 | { | |
4182 | if (!started_error_output) | |
4183 | { | |
4184 | started_error_output = 1; | |
0f71a2f6 | 4185 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 4186 | } |
0f71a2f6 | 4187 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
4188 | } |
4189 | continue; | |
4190 | } | |
23860348 | 4191 | break; /* Here to retransmit. */ |
c906108c SS |
4192 | } |
4193 | ||
4194 | #if 0 | |
4195 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
4196 | able to get out next time we call QUIT, without anything as |
4197 | violent as interrupt_query. If we want to provide a way out of | |
4198 | here without getting to the next QUIT, it should be based on | |
4199 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
4200 | if (quit_flag) |
4201 | { | |
4202 | quit_flag = 0; | |
4203 | interrupt_query (); | |
4204 | } | |
4205 | #endif | |
4206 | } | |
4207 | } | |
4208 | ||
6d820c5c DJ |
4209 | /* Come here after finding the start of a frame when we expected an |
4210 | ack. Do our best to discard the rest of this packet. */ | |
4211 | ||
4212 | static void | |
4213 | skip_frame (void) | |
4214 | { | |
4215 | int c; | |
4216 | ||
4217 | while (1) | |
4218 | { | |
4219 | c = readchar (remote_timeout); | |
4220 | switch (c) | |
4221 | { | |
4222 | case SERIAL_TIMEOUT: | |
4223 | /* Nothing we can do. */ | |
4224 | return; | |
4225 | case '#': | |
4226 | /* Discard the two bytes of checksum and stop. */ | |
4227 | c = readchar (remote_timeout); | |
4228 | if (c >= 0) | |
4229 | c = readchar (remote_timeout); | |
4230 | ||
4231 | return; | |
4232 | case '*': /* Run length encoding. */ | |
4233 | /* Discard the repeat count. */ | |
4234 | c = readchar (remote_timeout); | |
4235 | if (c < 0) | |
4236 | return; | |
4237 | break; | |
4238 | default: | |
4239 | /* A regular character. */ | |
4240 | break; | |
4241 | } | |
4242 | } | |
4243 | } | |
4244 | ||
c906108c | 4245 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
4246 | into *BUF, verifying the checksum, length, and handling run-length |
4247 | compression. NUL terminate the buffer. If there is not enough room, | |
4248 | expand *BUF using xrealloc. | |
c906108c | 4249 | |
c2d11a7d JM |
4250 | Returns -1 on error, number of characters in buffer (ignoring the |
4251 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 4252 | SERIAL status indications). */ |
c2d11a7d JM |
4253 | |
4254 | static long | |
6d820c5c DJ |
4255 | read_frame (char **buf_p, |
4256 | long *sizeof_buf) | |
c906108c SS |
4257 | { |
4258 | unsigned char csum; | |
c2d11a7d | 4259 | long bc; |
c906108c | 4260 | int c; |
6d820c5c | 4261 | char *buf = *buf_p; |
c906108c SS |
4262 | |
4263 | csum = 0; | |
c2d11a7d | 4264 | bc = 0; |
c906108c SS |
4265 | |
4266 | while (1) | |
4267 | { | |
4268 | c = readchar (remote_timeout); | |
c906108c SS |
4269 | switch (c) |
4270 | { | |
4271 | case SERIAL_TIMEOUT: | |
4272 | if (remote_debug) | |
0f71a2f6 | 4273 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 4274 | return -1; |
c906108c SS |
4275 | case '$': |
4276 | if (remote_debug) | |
0f71a2f6 JM |
4277 | fputs_filtered ("Saw new packet start in middle of old one\n", |
4278 | gdb_stdlog); | |
23860348 | 4279 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
4280 | case '#': |
4281 | { | |
4282 | unsigned char pktcsum; | |
e1b09194 AC |
4283 | int check_0 = 0; |
4284 | int check_1 = 0; | |
c906108c | 4285 | |
c2d11a7d | 4286 | buf[bc] = '\0'; |
c906108c | 4287 | |
e1b09194 AC |
4288 | check_0 = readchar (remote_timeout); |
4289 | if (check_0 >= 0) | |
4290 | check_1 = readchar (remote_timeout); | |
802188a7 | 4291 | |
e1b09194 AC |
4292 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
4293 | { | |
4294 | if (remote_debug) | |
23860348 MS |
4295 | fputs_filtered ("Timeout in checksum, retrying\n", |
4296 | gdb_stdlog); | |
e1b09194 AC |
4297 | return -1; |
4298 | } | |
4299 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
4300 | { |
4301 | if (remote_debug) | |
23860348 MS |
4302 | fputs_filtered ("Communication error in checksum\n", |
4303 | gdb_stdlog); | |
40e3f985 FN |
4304 | return -1; |
4305 | } | |
c906108c | 4306 | |
e1b09194 | 4307 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 4308 | if (csum == pktcsum) |
c2d11a7d | 4309 | return bc; |
c906108c | 4310 | |
c5aa993b | 4311 | if (remote_debug) |
c906108c | 4312 | { |
0f71a2f6 | 4313 | fprintf_filtered (gdb_stdlog, |
c5aa993b | 4314 | "Bad checksum, sentsum=0x%x, csum=0x%x, buf=", |
0f71a2f6 JM |
4315 | pktcsum, csum); |
4316 | fputs_filtered (buf, gdb_stdlog); | |
4317 | fputs_filtered ("\n", gdb_stdlog); | |
c906108c | 4318 | } |
c2d11a7d | 4319 | /* Number of characters in buffer ignoring trailing |
23860348 | 4320 | NULL. */ |
c2d11a7d | 4321 | return -1; |
c906108c | 4322 | } |
23860348 | 4323 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
4324 | { |
4325 | int repeat; | |
4326 | csum += c; | |
c906108c | 4327 | |
b4501125 AC |
4328 | c = readchar (remote_timeout); |
4329 | csum += c; | |
23860348 | 4330 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 4331 | |
23860348 | 4332 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 4333 | |
6d820c5c | 4334 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 4335 | { |
6d820c5c DJ |
4336 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
4337 | { | |
4338 | /* Make some more room in the buffer. */ | |
4339 | *sizeof_buf += repeat; | |
4340 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
4341 | buf = *buf_p; | |
4342 | } | |
4343 | ||
c2d11a7d JM |
4344 | memset (&buf[bc], buf[bc - 1], repeat); |
4345 | bc += repeat; | |
c2c6d25f JM |
4346 | continue; |
4347 | } | |
4348 | ||
c2d11a7d | 4349 | buf[bc] = '\0'; |
6d820c5c | 4350 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 4351 | return -1; |
c2c6d25f | 4352 | } |
c906108c | 4353 | default: |
6d820c5c | 4354 | if (bc >= *sizeof_buf - 1) |
c906108c | 4355 | { |
6d820c5c DJ |
4356 | /* Make some more room in the buffer. */ |
4357 | *sizeof_buf *= 2; | |
4358 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
4359 | buf = *buf_p; | |
c906108c SS |
4360 | } |
4361 | ||
6d820c5c DJ |
4362 | buf[bc++] = c; |
4363 | csum += c; | |
4364 | continue; | |
c906108c SS |
4365 | } |
4366 | } | |
4367 | } | |
4368 | ||
4369 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
4370 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
4371 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
4372 | rather than timing out; this is used (in synchronous mode) to wait | |
4373 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
4374 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
4375 | don't have to change all the calls to getpkt to deal with the | |
4376 | return value, because at the moment I don't know what the right | |
23860348 | 4377 | thing to do it for those. */ |
c906108c | 4378 | void |
6d820c5c DJ |
4379 | getpkt (char **buf, |
4380 | long *sizeof_buf, | |
c2d11a7d | 4381 | int forever) |
d9fcf2fb JM |
4382 | { |
4383 | int timed_out; | |
4384 | ||
4385 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
4386 | } | |
4387 | ||
4388 | ||
4389 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
4390 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
4391 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
4392 | rather than timing out; this is used (in synchronous mode) to wait | |
4393 | for a target that is is executing user code to stop. If FOREVER == | |
4394 | 0, this function is allowed to time out gracefully and return an | |
4395 | indication of this to the caller. */ | |
3172dc30 | 4396 | static int |
6d820c5c | 4397 | getpkt_sane (char **buf, long *sizeof_buf, int forever) |
c906108c SS |
4398 | { |
4399 | int c; | |
4400 | int tries; | |
4401 | int timeout; | |
4402 | int val; | |
4403 | ||
6d820c5c | 4404 | strcpy (*buf, "timeout"); |
c906108c SS |
4405 | |
4406 | if (forever) | |
4407 | { | |
c906108c | 4408 | timeout = watchdog > 0 ? watchdog : -1; |
c906108c SS |
4409 | } |
4410 | ||
4411 | else | |
4412 | timeout = remote_timeout; | |
4413 | ||
4414 | #define MAX_TRIES 3 | |
4415 | ||
4416 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
4417 | { | |
4418 | /* This can loop forever if the remote side sends us characters | |
23860348 MS |
4419 | continuously, but if it pauses, we'll get a zero from |
4420 | readchar because of timeout. Then we'll count that as a | |
4421 | retry. */ | |
c906108c | 4422 | |
23860348 MS |
4423 | /* Note that we will only wait forever prior to the start of a |
4424 | packet. After that, we expect characters to arrive at a | |
4425 | brisk pace. They should show up within remote_timeout | |
4426 | intervals. */ | |
c906108c SS |
4427 | |
4428 | do | |
4429 | { | |
4430 | c = readchar (timeout); | |
4431 | ||
4432 | if (c == SERIAL_TIMEOUT) | |
4433 | { | |
23860348 | 4434 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 4435 | { |
2acceee2 | 4436 | QUIT; |
c906108c | 4437 | target_mourn_inferior (); |
8a3fe4f8 | 4438 | error (_("Watchdog has expired. Target detached.")); |
c906108c | 4439 | } |
c906108c | 4440 | if (remote_debug) |
0f71a2f6 | 4441 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c SS |
4442 | goto retry; |
4443 | } | |
4444 | } | |
4445 | while (c != '$'); | |
4446 | ||
4447 | /* We've found the start of a packet, now collect the data. */ | |
4448 | ||
c2d11a7d | 4449 | val = read_frame (buf, sizeof_buf); |
c906108c | 4450 | |
c2d11a7d | 4451 | if (val >= 0) |
c906108c SS |
4452 | { |
4453 | if (remote_debug) | |
43e526b9 JM |
4454 | { |
4455 | fprintf_unfiltered (gdb_stdlog, "Packet received: "); | |
6d820c5c | 4456 | fputstr_unfiltered (*buf, 0, gdb_stdlog); |
43e526b9 JM |
4457 | fprintf_unfiltered (gdb_stdlog, "\n"); |
4458 | } | |
2cd58942 | 4459 | serial_write (remote_desc, "+", 1); |
d9fcf2fb | 4460 | return 0; |
c906108c SS |
4461 | } |
4462 | ||
4463 | /* Try the whole thing again. */ | |
4464 | retry: | |
2cd58942 | 4465 | serial_write (remote_desc, "-", 1); |
c906108c SS |
4466 | } |
4467 | ||
23860348 MS |
4468 | /* We have tried hard enough, and just can't receive the packet. |
4469 | Give up. */ | |
c906108c | 4470 | |
a3f17187 | 4471 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); |
2cd58942 | 4472 | serial_write (remote_desc, "+", 1); |
d9fcf2fb | 4473 | return 1; |
c906108c SS |
4474 | } |
4475 | \f | |
4476 | static void | |
fba45db2 | 4477 | remote_kill (void) |
c906108c SS |
4478 | { |
4479 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4480 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4481 | if (kill_kludge) | |
4482 | { | |
4483 | kill_kludge = 0; | |
4484 | target_mourn_inferior (); | |
4485 | return; | |
4486 | } | |
4487 | ||
4488 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
4489 | speaking terms with the remote system. */ | |
c5aa993b | 4490 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
c906108c SS |
4491 | |
4492 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4493 | we do or not. For the existing stubs, kill is a noop. */ | |
4494 | target_mourn_inferior (); | |
4495 | } | |
4496 | ||
23860348 | 4497 | /* Async version of remote_kill. */ |
43ff13b4 | 4498 | static void |
fba45db2 | 4499 | remote_async_kill (void) |
43ff13b4 | 4500 | { |
23860348 | 4501 | /* Unregister the file descriptor from the event loop. */ |
ed9a39eb | 4502 | if (target_is_async_p ()) |
2cd58942 | 4503 | serial_async (remote_desc, NULL, 0); |
43ff13b4 JM |
4504 | |
4505 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4506 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4507 | if (kill_kludge) | |
4508 | { | |
4509 | kill_kludge = 0; | |
4510 | target_mourn_inferior (); | |
4511 | return; | |
4512 | } | |
4513 | ||
23860348 MS |
4514 | /* Use catch_errors so the user can quit from gdb even when we |
4515 | aren't on speaking terms with the remote system. */ | |
c5aa993b | 4516 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
4517 | |
4518 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4519 | we do or not. For the existing stubs, kill is a noop. */ | |
4520 | target_mourn_inferior (); | |
4521 | } | |
4522 | ||
c906108c | 4523 | static void |
fba45db2 | 4524 | remote_mourn (void) |
c906108c SS |
4525 | { |
4526 | remote_mourn_1 (&remote_ops); | |
4527 | } | |
4528 | ||
53a5351d | 4529 | static void |
fba45db2 | 4530 | remote_async_mourn (void) |
53a5351d JM |
4531 | { |
4532 | remote_mourn_1 (&remote_async_ops); | |
4533 | } | |
4534 | ||
c906108c | 4535 | static void |
fba45db2 | 4536 | extended_remote_mourn (void) |
c906108c SS |
4537 | { |
4538 | /* We do _not_ want to mourn the target like this; this will | |
4539 | remove the extended remote target from the target stack, | |
802188a7 | 4540 | and the next time the user says "run" it'll fail. |
c906108c SS |
4541 | |
4542 | FIXME: What is the right thing to do here? */ | |
4543 | #if 0 | |
4544 | remote_mourn_1 (&extended_remote_ops); | |
4545 | #endif | |
4546 | } | |
4547 | ||
4548 | /* Worker function for remote_mourn. */ | |
4549 | static void | |
fba45db2 | 4550 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
4551 | { |
4552 | unpush_target (target); | |
4553 | generic_mourn_inferior (); | |
4554 | } | |
4555 | ||
4556 | /* In the extended protocol we want to be able to do things like | |
4557 | "run" and have them basically work as expected. So we need | |
802188a7 | 4558 | a special create_inferior function. |
c906108c SS |
4559 | |
4560 | FIXME: One day add support for changing the exec file | |
4561 | we're debugging, arguments and an environment. */ | |
4562 | ||
4563 | static void | |
23860348 MS |
4564 | extended_remote_create_inferior (char *exec_file, char *args, |
4565 | char **env, int from_tty) | |
c906108c SS |
4566 | { |
4567 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4568 | the remote server. */ | |
4569 | remove_breakpoints (); | |
4570 | ||
4571 | /* Now restart the remote server. */ | |
4572 | extended_remote_restart (); | |
4573 | ||
4574 | /* Now put the breakpoints back in. This way we're safe if the | |
4575 | restart function works via a unix fork on the remote side. */ | |
4576 | insert_breakpoints (); | |
4577 | ||
4578 | /* Clean up from the last time we were running. */ | |
4579 | clear_proceed_status (); | |
c906108c SS |
4580 | } |
4581 | ||
23860348 | 4582 | /* Async version of extended_remote_create_inferior. */ |
43ff13b4 | 4583 | static void |
23860348 MS |
4584 | extended_remote_async_create_inferior (char *exec_file, char *args, |
4585 | char **env, int from_tty) | |
43ff13b4 JM |
4586 | { |
4587 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4588 | the remote server. */ | |
4589 | remove_breakpoints (); | |
4590 | ||
4591 | /* If running asynchronously, register the target file descriptor | |
23860348 | 4592 | with the event loop. */ |
362646f5 | 4593 | if (target_can_async_p ()) |
2acceee2 | 4594 | target_async (inferior_event_handler, 0); |
43ff13b4 JM |
4595 | |
4596 | /* Now restart the remote server. */ | |
4597 | extended_remote_restart (); | |
4598 | ||
4599 | /* Now put the breakpoints back in. This way we're safe if the | |
4600 | restart function works via a unix fork on the remote side. */ | |
4601 | insert_breakpoints (); | |
4602 | ||
4603 | /* Clean up from the last time we were running. */ | |
4604 | clear_proceed_status (); | |
43ff13b4 | 4605 | } |
c906108c | 4606 | \f |
c5aa993b | 4607 | |
aaab4dba | 4608 | /* On some machines, e.g. 68k, we may use a different breakpoint |
7fec2c59 AC |
4609 | instruction than other targets; in those use |
4610 | DEPRECATED_REMOTE_BREAKPOINT instead of just BREAKPOINT_FROM_PC. | |
4611 | Also, bi-endian targets may define | |
4612 | DEPRECATED_LITTLE_REMOTE_BREAKPOINT and | |
4613 | DEPRECATED_BIG_REMOTE_BREAKPOINT. If none of these are defined, we | |
4614 | just call the standard routines that are in mem-break.c. */ | |
4615 | ||
4616 | /* NOTE: cagney/2003-06-08: This is silly. A remote and simulator | |
4617 | target should use an identical BREAKPOINT_FROM_PC. As for native, | |
4618 | the ARCH-OS-tdep.c code can override the default. */ | |
4619 | ||
4620 | #if defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) && !defined(DEPRECATED_REMOTE_BREAKPOINT) | |
4621 | #define DEPRECATED_REMOTE_BREAKPOINT | |
c906108c SS |
4622 | #endif |
4623 | ||
7fec2c59 | 4624 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c SS |
4625 | |
4626 | /* If the target isn't bi-endian, just pretend it is. */ | |
7fec2c59 AC |
4627 | #if !defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && !defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) |
4628 | #define DEPRECATED_LITTLE_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT | |
4629 | #define DEPRECATED_BIG_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT | |
c906108c SS |
4630 | #endif |
4631 | ||
7fec2c59 AC |
4632 | static unsigned char big_break_insn[] = DEPRECATED_BIG_REMOTE_BREAKPOINT; |
4633 | static unsigned char little_break_insn[] = DEPRECATED_LITTLE_REMOTE_BREAKPOINT; | |
c906108c | 4634 | |
7fec2c59 | 4635 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c | 4636 | |
8181d85f DJ |
4637 | /* Insert a breakpoint. On targets that have software breakpoint |
4638 | support, we ask the remote target to do the work; on targets | |
4639 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c SS |
4640 | |
4641 | static int | |
8181d85f | 4642 | remote_insert_breakpoint (struct bp_target_info *bp_tgt) |
c906108c | 4643 | { |
8181d85f | 4644 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 4645 | struct remote_state *rs = get_remote_state (); |
7fec2c59 | 4646 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c | 4647 | int val; |
802188a7 | 4648 | #endif |
96baa820 | 4649 | |
d471ea57 AC |
4650 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
4651 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
4652 | fails, and the user has explicitly requested the Z support then | |
23860348 | 4653 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 4654 | |
444abaca | 4655 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 4656 | { |
6d820c5c | 4657 | char *p = rs->buf; |
802188a7 | 4658 | |
96baa820 JM |
4659 | *(p++) = 'Z'; |
4660 | *(p++) = '0'; | |
4661 | *(p++) = ','; | |
8181d85f DJ |
4662 | BREAKPOINT_FROM_PC (&bp_tgt->placed_address, &bp_tgt->placed_size); |
4663 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); | |
4664 | p += hexnumstr (p, addr); | |
4665 | sprintf (p, ",%d", bp_tgt->placed_size); | |
802188a7 | 4666 | |
6d820c5c DJ |
4667 | putpkt (rs->buf); |
4668 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 4669 | |
6d820c5c | 4670 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 4671 | { |
d471ea57 AC |
4672 | case PACKET_ERROR: |
4673 | return -1; | |
4674 | case PACKET_OK: | |
4675 | return 0; | |
4676 | case PACKET_UNKNOWN: | |
4677 | break; | |
96baa820 JM |
4678 | } |
4679 | } | |
c906108c | 4680 | |
802188a7 | 4681 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
8181d85f DJ |
4682 | bp_tgt->placed_size = bp_tgt->shadow_len = sizeof big_break_insn; |
4683 | val = target_read_memory (addr, bp_tgt->shadow_contents, bp_tgt->shadow_len); | |
c906108c SS |
4684 | |
4685 | if (val == 0) | |
4686 | { | |
d7449b42 | 4687 | if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) |
c906108c SS |
4688 | val = target_write_memory (addr, (char *) big_break_insn, |
4689 | sizeof big_break_insn); | |
4690 | else | |
4691 | val = target_write_memory (addr, (char *) little_break_insn, | |
4692 | sizeof little_break_insn); | |
4693 | } | |
4694 | ||
4695 | return val; | |
4696 | #else | |
8181d85f | 4697 | return memory_insert_breakpoint (bp_tgt); |
7fec2c59 | 4698 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c SS |
4699 | } |
4700 | ||
4701 | static int | |
8181d85f | 4702 | remote_remove_breakpoint (struct bp_target_info *bp_tgt) |
c906108c | 4703 | { |
8181d85f | 4704 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 4705 | struct remote_state *rs = get_remote_state (); |
96baa820 JM |
4706 | int bp_size; |
4707 | ||
444abaca | 4708 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 4709 | { |
6d820c5c | 4710 | char *p = rs->buf; |
802188a7 | 4711 | |
96baa820 JM |
4712 | *(p++) = 'z'; |
4713 | *(p++) = '0'; | |
4714 | *(p++) = ','; | |
4715 | ||
8181d85f DJ |
4716 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
4717 | p += hexnumstr (p, addr); | |
4718 | sprintf (p, ",%d", bp_tgt->placed_size); | |
802188a7 | 4719 | |
6d820c5c DJ |
4720 | putpkt (rs->buf); |
4721 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 4722 | |
6d820c5c | 4723 | return (rs->buf[0] == 'E'); |
96baa820 JM |
4724 | } |
4725 | ||
7fec2c59 | 4726 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
8181d85f DJ |
4727 | return target_write_memory (bp_tgt->placed_address, bp_tgt->shadow_contents, |
4728 | bp_tgt->shadow_len); | |
c906108c | 4729 | #else |
8181d85f | 4730 | return memory_remove_breakpoint (bp_tgt); |
7fec2c59 | 4731 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c SS |
4732 | } |
4733 | ||
d471ea57 AC |
4734 | static int |
4735 | watchpoint_to_Z_packet (int type) | |
4736 | { | |
4737 | switch (type) | |
4738 | { | |
4739 | case hw_write: | |
bb858e6a | 4740 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
4741 | break; |
4742 | case hw_read: | |
bb858e6a | 4743 | return Z_PACKET_READ_WP; |
d471ea57 AC |
4744 | break; |
4745 | case hw_access: | |
bb858e6a | 4746 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
4747 | break; |
4748 | default: | |
8e65ff28 | 4749 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4750 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
4751 | } |
4752 | } | |
4753 | ||
3c3bea1c | 4754 | static int |
fba45db2 | 4755 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 4756 | { |
d01949b6 | 4757 | struct remote_state *rs = get_remote_state (); |
e514a9d6 | 4758 | char *p; |
d471ea57 | 4759 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 4760 | |
444abaca | 4761 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
5cffb350 | 4762 | return -1; |
802188a7 | 4763 | |
6d820c5c DJ |
4764 | sprintf (rs->buf, "Z%x,", packet); |
4765 | p = strchr (rs->buf, '\0'); | |
96baa820 JM |
4766 | addr = remote_address_masked (addr); |
4767 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4768 | sprintf (p, ",%x", len); |
802188a7 | 4769 | |
6d820c5c DJ |
4770 | putpkt (rs->buf); |
4771 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 4772 | |
6d820c5c | 4773 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
4774 | { |
4775 | case PACKET_ERROR: | |
4776 | case PACKET_UNKNOWN: | |
4777 | return -1; | |
4778 | case PACKET_OK: | |
4779 | return 0; | |
4780 | } | |
8e65ff28 | 4781 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4782 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
4783 | } |
4784 | ||
d471ea57 | 4785 | |
3c3bea1c | 4786 | static int |
fba45db2 | 4787 | remote_remove_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 4788 | { |
d01949b6 | 4789 | struct remote_state *rs = get_remote_state (); |
e514a9d6 | 4790 | char *p; |
d471ea57 AC |
4791 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
4792 | ||
444abaca | 4793 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
5cffb350 | 4794 | return -1; |
802188a7 | 4795 | |
6d820c5c DJ |
4796 | sprintf (rs->buf, "z%x,", packet); |
4797 | p = strchr (rs->buf, '\0'); | |
96baa820 JM |
4798 | addr = remote_address_masked (addr); |
4799 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4800 | sprintf (p, ",%x", len); |
6d820c5c DJ |
4801 | putpkt (rs->buf); |
4802 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 4803 | |
6d820c5c | 4804 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
4805 | { |
4806 | case PACKET_ERROR: | |
4807 | case PACKET_UNKNOWN: | |
4808 | return -1; | |
4809 | case PACKET_OK: | |
4810 | return 0; | |
4811 | } | |
8e65ff28 | 4812 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4813 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
4814 | } |
4815 | ||
3c3bea1c | 4816 | |
501eef12 AC |
4817 | int remote_hw_watchpoint_limit = -1; |
4818 | int remote_hw_breakpoint_limit = -1; | |
d471ea57 | 4819 | |
b9362cc7 | 4820 | static int |
3c3bea1c | 4821 | remote_check_watch_resources (int type, int cnt, int ot) |
96baa820 | 4822 | { |
3c3bea1c GS |
4823 | if (type == bp_hardware_breakpoint) |
4824 | { | |
4825 | if (remote_hw_breakpoint_limit == 0) | |
4826 | return 0; | |
501eef12 AC |
4827 | else if (remote_hw_breakpoint_limit < 0) |
4828 | return 1; | |
3c3bea1c GS |
4829 | else if (cnt <= remote_hw_breakpoint_limit) |
4830 | return 1; | |
4831 | } | |
4832 | else | |
4833 | { | |
4834 | if (remote_hw_watchpoint_limit == 0) | |
4835 | return 0; | |
501eef12 AC |
4836 | else if (remote_hw_watchpoint_limit < 0) |
4837 | return 1; | |
3c3bea1c GS |
4838 | else if (ot) |
4839 | return -1; | |
4840 | else if (cnt <= remote_hw_watchpoint_limit) | |
4841 | return 1; | |
4842 | } | |
4843 | return -1; | |
4844 | } | |
4845 | ||
b9362cc7 | 4846 | static int |
3c3bea1c GS |
4847 | remote_stopped_by_watchpoint (void) |
4848 | { | |
4849 | return remote_stopped_by_watchpoint_p; | |
4850 | } | |
4851 | ||
7270d8f2 OF |
4852 | extern int stepped_after_stopped_by_watchpoint; |
4853 | ||
4aa7a7f5 JJ |
4854 | static int |
4855 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 4856 | { |
4aa7a7f5 | 4857 | int rc = 0; |
7270d8f2 OF |
4858 | if (remote_stopped_by_watchpoint () |
4859 | || stepped_after_stopped_by_watchpoint) | |
4aa7a7f5 JJ |
4860 | { |
4861 | *addr_p = remote_watch_data_address; | |
4862 | rc = 1; | |
4863 | } | |
4864 | ||
4865 | return rc; | |
3c3bea1c GS |
4866 | } |
4867 | ||
4868 | ||
4869 | static int | |
8181d85f | 4870 | remote_insert_hw_breakpoint (struct bp_target_info *bp_tgt) |
3c3bea1c | 4871 | { |
8181d85f | 4872 | CORE_ADDR addr; |
d01949b6 | 4873 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 4874 | char *p = rs->buf; |
802188a7 | 4875 | |
c8189ed1 | 4876 | /* The length field should be set to the size of a breakpoint |
8181d85f | 4877 | instruction, even though we aren't inserting one ourselves. */ |
c8189ed1 | 4878 | |
8181d85f | 4879 | BREAKPOINT_FROM_PC (&bp_tgt->placed_address, &bp_tgt->placed_size); |
3c3bea1c | 4880 | |
444abaca | 4881 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 NS |
4882 | return -1; |
4883 | ||
96baa820 JM |
4884 | *(p++) = 'Z'; |
4885 | *(p++) = '1'; | |
4886 | *(p++) = ','; | |
802188a7 | 4887 | |
8181d85f | 4888 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 4889 | p += hexnumstr (p, (ULONGEST) addr); |
8181d85f | 4890 | sprintf (p, ",%x", bp_tgt->placed_size); |
96baa820 | 4891 | |
6d820c5c DJ |
4892 | putpkt (rs->buf); |
4893 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 4894 | |
6d820c5c | 4895 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
4896 | { |
4897 | case PACKET_ERROR: | |
4898 | case PACKET_UNKNOWN: | |
4899 | return -1; | |
4900 | case PACKET_OK: | |
4901 | return 0; | |
4902 | } | |
8e65ff28 | 4903 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4904 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
4905 | } |
4906 | ||
d471ea57 | 4907 | |
802188a7 | 4908 | static int |
8181d85f | 4909 | remote_remove_hw_breakpoint (struct bp_target_info *bp_tgt) |
96baa820 | 4910 | { |
8181d85f | 4911 | CORE_ADDR addr; |
d01949b6 | 4912 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 4913 | char *p = rs->buf; |
c8189ed1 | 4914 | |
444abaca | 4915 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 4916 | return -1; |
802188a7 | 4917 | |
96baa820 JM |
4918 | *(p++) = 'z'; |
4919 | *(p++) = '1'; | |
4920 | *(p++) = ','; | |
802188a7 | 4921 | |
8181d85f | 4922 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 4923 | p += hexnumstr (p, (ULONGEST) addr); |
8181d85f | 4924 | sprintf (p, ",%x", bp_tgt->placed_size); |
96baa820 | 4925 | |
6d820c5c DJ |
4926 | putpkt (rs->buf); |
4927 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 4928 | |
6d820c5c | 4929 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
4930 | { |
4931 | case PACKET_ERROR: | |
4932 | case PACKET_UNKNOWN: | |
4933 | return -1; | |
4934 | case PACKET_OK: | |
4935 | return 0; | |
4936 | } | |
8e65ff28 | 4937 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4938 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 4939 | } |
96baa820 | 4940 | |
c906108c SS |
4941 | /* Some targets are only capable of doing downloads, and afterwards |
4942 | they switch to the remote serial protocol. This function provides | |
4943 | a clean way to get from the download target to the remote target. | |
4944 | It's basically just a wrapper so that we don't have to expose any | |
4945 | of the internal workings of remote.c. | |
4946 | ||
4947 | Prior to calling this routine, you should shutdown the current | |
4948 | target code, else you will get the "A program is being debugged | |
4949 | already..." message. Usually a call to pop_target() suffices. */ | |
4950 | ||
4951 | void | |
fba45db2 | 4952 | push_remote_target (char *name, int from_tty) |
c906108c | 4953 | { |
a3f17187 | 4954 | printf_filtered (_("Switching to remote protocol\n")); |
c906108c SS |
4955 | remote_open (name, from_tty); |
4956 | } | |
4957 | ||
23860348 | 4958 | /* Table used by the crc32 function to calcuate the checksum. */ |
c906108c | 4959 | |
c5aa993b JM |
4960 | static unsigned long crc32_table[256] = |
4961 | {0, 0}; | |
c906108c SS |
4962 | |
4963 | static unsigned long | |
fba45db2 | 4964 | crc32 (unsigned char *buf, int len, unsigned int crc) |
c906108c | 4965 | { |
c5aa993b | 4966 | if (!crc32_table[1]) |
c906108c | 4967 | { |
23860348 | 4968 | /* Initialize the CRC table and the decoding table. */ |
c906108c SS |
4969 | int i, j; |
4970 | unsigned int c; | |
4971 | ||
4972 | for (i = 0; i < 256; i++) | |
c5aa993b JM |
4973 | { |
4974 | for (c = i << 24, j = 8; j > 0; --j) | |
4975 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
4976 | crc32_table[i] = c; | |
4977 | } | |
c906108c SS |
4978 | } |
4979 | ||
4980 | while (len--) | |
4981 | { | |
4982 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |
4983 | buf++; | |
4984 | } | |
4985 | return crc; | |
4986 | } | |
4987 | ||
4988 | /* compare-sections command | |
4989 | ||
4990 | With no arguments, compares each loadable section in the exec bfd | |
4991 | with the same memory range on the target, and reports mismatches. | |
4992 | Useful for verifying the image on the target against the exec file. | |
4993 | Depends on the target understanding the new "qCRC:" request. */ | |
4994 | ||
e514a9d6 JM |
4995 | /* FIXME: cagney/1999-10-26: This command should be broken down into a |
4996 | target method (target verify memory) and generic version of the | |
4997 | actual command. This will allow other high-level code (especially | |
23860348 | 4998 | generic_load()) to make use of this target functionality. */ |
e514a9d6 | 4999 | |
c906108c | 5000 | static void |
fba45db2 | 5001 | compare_sections_command (char *args, int from_tty) |
c906108c | 5002 | { |
d01949b6 | 5003 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
5004 | asection *s; |
5005 | unsigned long host_crc, target_crc; | |
5006 | extern bfd *exec_bfd; | |
5007 | struct cleanup *old_chain; | |
085dd6e6 JM |
5008 | char *tmp; |
5009 | char *sectdata; | |
ce359b09 | 5010 | const char *sectname; |
c906108c SS |
5011 | bfd_size_type size; |
5012 | bfd_vma lma; | |
5013 | int matched = 0; | |
5014 | int mismatched = 0; | |
5015 | ||
5016 | if (!exec_bfd) | |
8a3fe4f8 | 5017 | error (_("command cannot be used without an exec file")); |
c906108c SS |
5018 | if (!current_target.to_shortname || |
5019 | strcmp (current_target.to_shortname, "remote") != 0) | |
8a3fe4f8 | 5020 | error (_("command can only be used with remote target")); |
c906108c | 5021 | |
c5aa993b | 5022 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
5023 | { |
5024 | if (!(s->flags & SEC_LOAD)) | |
c5aa993b | 5025 | continue; /* skip non-loadable section */ |
c906108c | 5026 | |
2c500098 | 5027 | size = bfd_get_section_size (s); |
c906108c | 5028 | if (size == 0) |
c5aa993b | 5029 | continue; /* skip zero-length section */ |
c906108c | 5030 | |
ce359b09 | 5031 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 5032 | if (args && strcmp (args, sectname) != 0) |
c5aa993b | 5033 | continue; /* not the section selected by user */ |
c906108c | 5034 | |
c5aa993b | 5035 | matched = 1; /* do this section */ |
c906108c | 5036 | lma = s->lma; |
23860348 | 5037 | /* FIXME: assumes lma can fit into long. */ |
ea9c271d | 5038 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", |
ecbc58df | 5039 | (long) lma, (long) size); |
6d820c5c | 5040 | putpkt (rs->buf); |
c906108c | 5041 | |
23860348 MS |
5042 | /* Be clever; compute the host_crc before waiting for target |
5043 | reply. */ | |
c906108c | 5044 | sectdata = xmalloc (size); |
b8c9b27d | 5045 | old_chain = make_cleanup (xfree, sectdata); |
c906108c SS |
5046 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
5047 | host_crc = crc32 ((unsigned char *) sectdata, size, 0xffffffff); | |
5048 | ||
6d820c5c DJ |
5049 | getpkt (&rs->buf, &rs->buf_size, 0); |
5050 | if (rs->buf[0] == 'E') | |
8a3fe4f8 | 5051 | error (_("target memory fault, section %s, range 0x%s -- 0x%s"), |
823ca731 | 5052 | sectname, paddr (lma), paddr (lma + size)); |
6d820c5c | 5053 | if (rs->buf[0] != 'C') |
8a3fe4f8 | 5054 | error (_("remote target does not support this operation")); |
c906108c | 5055 | |
6d820c5c | 5056 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) |
c906108c SS |
5057 | target_crc = target_crc * 16 + fromhex (*tmp); |
5058 | ||
d4f3574e SS |
5059 | printf_filtered ("Section %s, range 0x%s -- 0x%s: ", |
5060 | sectname, paddr (lma), paddr (lma + size)); | |
c906108c SS |
5061 | if (host_crc == target_crc) |
5062 | printf_filtered ("matched.\n"); | |
5063 | else | |
c5aa993b JM |
5064 | { |
5065 | printf_filtered ("MIS-MATCHED!\n"); | |
5066 | mismatched++; | |
5067 | } | |
c906108c SS |
5068 | |
5069 | do_cleanups (old_chain); | |
5070 | } | |
5071 | if (mismatched > 0) | |
8a3fe4f8 AC |
5072 | warning (_("One or more sections of the remote executable does not match\n\ |
5073 | the loaded file\n")); | |
c906108c | 5074 | if (args && !matched) |
a3f17187 | 5075 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
5076 | } |
5077 | ||
1e3ff5ad | 5078 | static LONGEST |
4b8a223f | 5079 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
961cb7b5 MK |
5080 | const char *annex, gdb_byte *readbuf, |
5081 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
c906108c | 5082 | { |
d01949b6 | 5083 | struct remote_state *rs = get_remote_state (); |
c906108c | 5084 | int i; |
6d820c5c | 5085 | char *p2; |
1e3ff5ad | 5086 | char query_type; |
c906108c | 5087 | |
21e3b9b9 DJ |
5088 | /* Handle memory using remote_xfer_memory. */ |
5089 | if (object == TARGET_OBJECT_MEMORY) | |
5090 | { | |
5091 | int xfered; | |
5092 | errno = 0; | |
5093 | ||
5094 | if (writebuf != NULL) | |
5095 | { | |
5096 | void *buffer = xmalloc (len); | |
5097 | struct cleanup *cleanup = make_cleanup (xfree, buffer); | |
5098 | memcpy (buffer, writebuf, len); | |
5099 | xfered = remote_xfer_memory (offset, buffer, len, 1, NULL, ops); | |
5100 | do_cleanups (cleanup); | |
5101 | } | |
5102 | else | |
5103 | xfered = remote_xfer_memory (offset, readbuf, len, 0, NULL, ops); | |
5104 | ||
5105 | if (xfered > 0) | |
5106 | return xfered; | |
5107 | else if (xfered == 0 && errno == 0) | |
5108 | return 0; | |
5109 | else | |
5110 | return -1; | |
5111 | } | |
5112 | ||
4b8a223f AC |
5113 | /* Only handle reads. */ |
5114 | if (writebuf != NULL || readbuf == NULL) | |
5115 | return -1; | |
5116 | ||
1e3ff5ad AC |
5117 | /* Map pre-existing objects onto letters. DO NOT do this for new |
5118 | objects!!! Instead specify new query packets. */ | |
5119 | switch (object) | |
c906108c | 5120 | { |
1e3ff5ad AC |
5121 | case TARGET_OBJECT_KOD: |
5122 | query_type = 'K'; | |
5123 | break; | |
5124 | case TARGET_OBJECT_AVR: | |
5125 | query_type = 'R'; | |
5126 | break; | |
802188a7 RM |
5127 | |
5128 | case TARGET_OBJECT_AUXV: | |
444abaca | 5129 | if (remote_protocol_packets[PACKET_qPart_auxv].support != PACKET_DISABLE) |
802188a7 RM |
5130 | { |
5131 | unsigned int total = 0; | |
5132 | while (len > 0) | |
5133 | { | |
ea9c271d DJ |
5134 | LONGEST n = min ((get_remote_packet_size () - 2) / 2, len); |
5135 | snprintf (rs->buf, get_remote_packet_size (), | |
802188a7 RM |
5136 | "qPart:auxv:read::%s,%s", |
5137 | phex_nz (offset, sizeof offset), | |
5138 | phex_nz (n, sizeof n)); | |
6d820c5c | 5139 | i = putpkt (rs->buf); |
802188a7 RM |
5140 | if (i < 0) |
5141 | return total > 0 ? total : i; | |
6d820c5c DJ |
5142 | rs->buf[0] = '\0'; |
5143 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5144 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qPart_auxv]) | |
444abaca | 5145 | != PACKET_OK) |
802188a7 | 5146 | return total > 0 ? total : -1; |
6d820c5c | 5147 | if (strcmp (rs->buf, "OK") == 0) |
802188a7 RM |
5148 | break; /* Got EOF indicator. */ |
5149 | /* Got some data. */ | |
6d820c5c | 5150 | i = hex2bin (rs->buf, readbuf, len); |
802188a7 RM |
5151 | if (i > 0) |
5152 | { | |
5153 | readbuf = (void *) ((char *) readbuf + i); | |
5154 | offset += i; | |
5155 | len -= i; | |
5156 | total += i; | |
5157 | } | |
5158 | } | |
5159 | return total; | |
5160 | } | |
5161 | return -1; | |
5162 | ||
1e3ff5ad | 5163 | default: |
c906108c SS |
5164 | return -1; |
5165 | } | |
5166 | ||
4b8a223f | 5167 | /* Note: a zero OFFSET and LEN can be used to query the minimum |
1e3ff5ad | 5168 | buffer size. */ |
4b8a223f | 5169 | if (offset == 0 && len == 0) |
ea9c271d DJ |
5170 | return (get_remote_packet_size ()); |
5171 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not | |
24b06219 | 5172 | large enough let the caller deal with it. */ |
ea9c271d | 5173 | if (len < get_remote_packet_size ()) |
1e3ff5ad | 5174 | return -1; |
ea9c271d | 5175 | len = get_remote_packet_size (); |
1e3ff5ad | 5176 | |
23860348 | 5177 | /* Except for querying the minimum buffer size, target must be open. */ |
c5aa993b | 5178 | if (!remote_desc) |
8a3fe4f8 | 5179 | error (_("remote query is only available after target open")); |
c906108c | 5180 | |
1e3ff5ad | 5181 | gdb_assert (annex != NULL); |
4b8a223f | 5182 | gdb_assert (readbuf != NULL); |
c906108c | 5183 | |
6d820c5c | 5184 | p2 = rs->buf; |
c906108c SS |
5185 | *p2++ = 'q'; |
5186 | *p2++ = query_type; | |
5187 | ||
23860348 MS |
5188 | /* We used one buffer char for the remote protocol q command and |
5189 | another for the query type. As the remote protocol encapsulation | |
5190 | uses 4 chars plus one extra in case we are debugging | |
5191 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
5192 | string. */ | |
c906108c | 5193 | i = 0; |
ea9c271d | 5194 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 5195 | { |
1e3ff5ad AC |
5196 | /* Bad caller may have sent forbidden characters. */ |
5197 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
5198 | *p2++ = annex[i]; | |
c906108c SS |
5199 | i++; |
5200 | } | |
1e3ff5ad AC |
5201 | *p2 = '\0'; |
5202 | gdb_assert (annex[i] == '\0'); | |
c906108c | 5203 | |
6d820c5c | 5204 | i = putpkt (rs->buf); |
c5aa993b JM |
5205 | if (i < 0) |
5206 | return i; | |
c906108c | 5207 | |
6d820c5c DJ |
5208 | getpkt (&rs->buf, &rs->buf_size, 0); |
5209 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 5210 | |
cfd77fa1 | 5211 | return strlen ((char *) readbuf); |
c906108c SS |
5212 | } |
5213 | ||
96baa820 JM |
5214 | static void |
5215 | remote_rcmd (char *command, | |
d9fcf2fb | 5216 | struct ui_file *outbuf) |
96baa820 | 5217 | { |
d01949b6 | 5218 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 5219 | char *buf = rs->buf; |
96baa820 JM |
5220 | char *p = buf; |
5221 | ||
5222 | if (!remote_desc) | |
8a3fe4f8 | 5223 | error (_("remote rcmd is only available after target open")); |
96baa820 | 5224 | |
23860348 | 5225 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
5226 | if (command == NULL) |
5227 | command = ""; | |
5228 | ||
23860348 | 5229 | /* The query prefix. */ |
96baa820 JM |
5230 | strcpy (buf, "qRcmd,"); |
5231 | p = strchr (buf, '\0'); | |
5232 | ||
ea9c271d | 5233 | if ((strlen (buf) + strlen (command) * 2 + 8/*misc*/) > get_remote_packet_size ()) |
8a3fe4f8 | 5234 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 5235 | |
23860348 | 5236 | /* Encode the actual command. */ |
cfd77fa1 | 5237 | bin2hex ((gdb_byte *) command, p, 0); |
96baa820 | 5238 | |
6d820c5c | 5239 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 5240 | error (_("Communication problem with target.")); |
96baa820 JM |
5241 | |
5242 | /* get/display the response */ | |
5243 | while (1) | |
5244 | { | |
23860348 | 5245 | /* XXX - see also tracepoint.c:remote_get_noisy_reply(). */ |
96baa820 | 5246 | buf[0] = '\0'; |
6d820c5c | 5247 | getpkt (&rs->buf, &rs->buf_size, 0); |
96baa820 | 5248 | if (buf[0] == '\0') |
8a3fe4f8 | 5249 | error (_("Target does not support this command.")); |
96baa820 JM |
5250 | if (buf[0] == 'O' && buf[1] != 'K') |
5251 | { | |
23860348 | 5252 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
5253 | continue; |
5254 | } | |
5255 | if (strcmp (buf, "OK") == 0) | |
5256 | break; | |
7be570e7 JM |
5257 | if (strlen (buf) == 3 && buf[0] == 'E' |
5258 | && isdigit (buf[1]) && isdigit (buf[2])) | |
5259 | { | |
8a3fe4f8 | 5260 | error (_("Protocol error with Rcmd")); |
7be570e7 | 5261 | } |
96baa820 JM |
5262 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
5263 | { | |
5264 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
5265 | fputc_unfiltered (c, outbuf); | |
5266 | } | |
5267 | break; | |
5268 | } | |
5269 | } | |
5270 | ||
c906108c | 5271 | static void |
fba45db2 | 5272 | packet_command (char *args, int from_tty) |
c906108c | 5273 | { |
d01949b6 | 5274 | struct remote_state *rs = get_remote_state (); |
c906108c | 5275 | |
c5aa993b | 5276 | if (!remote_desc) |
8a3fe4f8 | 5277 | error (_("command can only be used with remote target")); |
c906108c | 5278 | |
c5aa993b | 5279 | if (!args) |
8a3fe4f8 | 5280 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
5281 | |
5282 | puts_filtered ("sending: "); | |
5283 | print_packet (args); | |
5284 | puts_filtered ("\n"); | |
5285 | putpkt (args); | |
5286 | ||
6d820c5c | 5287 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 5288 | puts_filtered ("received: "); |
6d820c5c | 5289 | print_packet (rs->buf); |
c906108c SS |
5290 | puts_filtered ("\n"); |
5291 | } | |
5292 | ||
5293 | #if 0 | |
23860348 | 5294 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 5295 | |
a14ed312 | 5296 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 5297 | |
a14ed312 | 5298 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 5299 | |
a14ed312 | 5300 | static void threadalive_test (char *cmd, int tty); |
c906108c | 5301 | |
a14ed312 | 5302 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 5303 | |
23860348 | 5304 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 5305 | |
a14ed312 | 5306 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 5307 | |
23860348 | 5308 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 5309 | |
a14ed312 | 5310 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 5311 | |
a14ed312 | 5312 | static void init_remote_threadtests (void); |
c906108c | 5313 | |
23860348 | 5314 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
5315 | |
5316 | static void | |
fba45db2 | 5317 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
5318 | { |
5319 | int sample_thread = SAMPLE_THREAD; | |
5320 | ||
a3f17187 | 5321 | printf_filtered (_("Remote threadset test\n")); |
c906108c SS |
5322 | set_thread (sample_thread, 1); |
5323 | } | |
5324 | ||
5325 | ||
5326 | static void | |
fba45db2 | 5327 | threadalive_test (char *cmd, int tty) |
c906108c SS |
5328 | { |
5329 | int sample_thread = SAMPLE_THREAD; | |
5330 | ||
39f77062 | 5331 | if (remote_thread_alive (pid_to_ptid (sample_thread))) |
c906108c SS |
5332 | printf_filtered ("PASS: Thread alive test\n"); |
5333 | else | |
5334 | printf_filtered ("FAIL: Thread alive test\n"); | |
5335 | } | |
5336 | ||
23860348 | 5337 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
5338 | |
5339 | void | |
fba45db2 | 5340 | output_threadid (char *title, threadref *ref) |
c906108c SS |
5341 | { |
5342 | char hexid[20]; | |
5343 | ||
23860348 | 5344 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
5345 | hexid[16] = 0; |
5346 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
5347 | } | |
5348 | ||
5349 | static void | |
fba45db2 | 5350 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
5351 | { |
5352 | int startflag = 1; | |
5353 | threadref nextthread; | |
5354 | int done, result_count; | |
5355 | threadref threadlist[3]; | |
5356 | ||
5357 | printf_filtered ("Remote Threadlist test\n"); | |
5358 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
5359 | &result_count, &threadlist[0])) | |
5360 | printf_filtered ("FAIL: threadlist test\n"); | |
5361 | else | |
5362 | { | |
5363 | threadref *scan = threadlist; | |
5364 | threadref *limit = scan + result_count; | |
5365 | ||
5366 | while (scan < limit) | |
5367 | output_threadid (" thread ", scan++); | |
5368 | } | |
5369 | } | |
5370 | ||
5371 | void | |
fba45db2 | 5372 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
5373 | { |
5374 | output_threadid ("Threadid: ", &info->threadid); | |
5375 | printf_filtered ("Name: %s\n ", info->shortname); | |
5376 | printf_filtered ("State: %s\n", info->display); | |
5377 | printf_filtered ("other: %s\n\n", info->more_display); | |
5378 | } | |
5379 | ||
5380 | int | |
fba45db2 | 5381 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
5382 | { |
5383 | int result; | |
5384 | int set; | |
5385 | struct gdb_ext_thread_info threadinfo; | |
5386 | ||
5387 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
5388 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
5389 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
5390 | display_thread_info (&threadinfo); | |
5391 | return result; | |
5392 | } | |
5393 | ||
5394 | static void | |
fba45db2 | 5395 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
5396 | { |
5397 | int athread = SAMPLE_THREAD; | |
5398 | threadref thread; | |
5399 | int set; | |
5400 | ||
5401 | int_to_threadref (&thread, athread); | |
5402 | printf_filtered ("Remote Threadinfo test\n"); | |
5403 | if (!get_and_display_threadinfo (&thread)) | |
5404 | printf_filtered ("FAIL cannot get thread info\n"); | |
5405 | } | |
5406 | ||
5407 | static int | |
fba45db2 | 5408 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
5409 | { |
5410 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
5411 | return get_and_display_threadinfo (ref); | |
5412 | } | |
5413 | ||
5414 | static void | |
fba45db2 | 5415 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
5416 | { |
5417 | printf_filtered ("Remote Threadlist update test\n"); | |
5418 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
5419 | } | |
5420 | ||
5421 | static void | |
5422 | init_remote_threadtests (void) | |
5423 | { | |
1bedd215 AC |
5424 | add_com ("tlist", class_obscure, threadlist_test_cmd, _("\ |
5425 | Fetch and print the remote list of thread identifiers, one pkt only")); | |
c906108c | 5426 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 5427 | _("Fetch and display info about one thread")); |
c906108c | 5428 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 5429 | _("Test setting to a different thread")); |
c906108c | 5430 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 5431 | _("Iterate through updating all remote thread info")); |
c906108c | 5432 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 5433 | _(" Remote thread alive test ")); |
c906108c SS |
5434 | } |
5435 | ||
5436 | #endif /* 0 */ | |
5437 | ||
f3fb8c85 MS |
5438 | /* Convert a thread ID to a string. Returns the string in a static |
5439 | buffer. */ | |
5440 | ||
5441 | static char * | |
39f77062 | 5442 | remote_pid_to_str (ptid_t ptid) |
f3fb8c85 | 5443 | { |
fd0a2a6f | 5444 | static char buf[32]; |
f3fb8c85 | 5445 | |
6c76e4a1 | 5446 | xsnprintf (buf, sizeof buf, "thread %d", ptid_get_pid (ptid)); |
f3fb8c85 MS |
5447 | return buf; |
5448 | } | |
5449 | ||
38691318 KB |
5450 | /* Get the address of the thread local variable in OBJFILE which is |
5451 | stored at OFFSET within the thread local storage for thread PTID. */ | |
5452 | ||
5453 | static CORE_ADDR | |
5454 | remote_get_thread_local_address (ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
5455 | { | |
444abaca | 5456 | if (remote_protocol_packets[PACKET_qGetTLSAddr].support != PACKET_DISABLE) |
38691318 KB |
5457 | { |
5458 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 5459 | char *p = rs->buf; |
571dd617 | 5460 | enum packet_result result; |
38691318 KB |
5461 | |
5462 | strcpy (p, "qGetTLSAddr:"); | |
5463 | p += strlen (p); | |
5464 | p += hexnumstr (p, PIDGET (ptid)); | |
5465 | *p++ = ','; | |
5466 | p += hexnumstr (p, offset); | |
5467 | *p++ = ','; | |
5468 | p += hexnumstr (p, lm); | |
5469 | *p++ = '\0'; | |
5470 | ||
6d820c5c DJ |
5471 | putpkt (rs->buf); |
5472 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5473 | result = packet_ok (rs->buf, &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 5474 | if (result == PACKET_OK) |
38691318 KB |
5475 | { |
5476 | ULONGEST result; | |
5477 | ||
6d820c5c | 5478 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
5479 | return result; |
5480 | } | |
571dd617 | 5481 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
5482 | throw_error (TLS_GENERIC_ERROR, |
5483 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 5484 | else |
109c3e39 AC |
5485 | throw_error (TLS_GENERIC_ERROR, |
5486 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
5487 | } |
5488 | else | |
109c3e39 AC |
5489 | throw_error (TLS_GENERIC_ERROR, |
5490 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
5491 | /* Not reached. */ |
5492 | return 0; | |
5493 | } | |
5494 | ||
c906108c | 5495 | static void |
fba45db2 | 5496 | init_remote_ops (void) |
c906108c | 5497 | { |
c5aa993b | 5498 | remote_ops.to_shortname = "remote"; |
c906108c | 5499 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 5500 | remote_ops.to_doc = |
c906108c | 5501 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
5502 | Specify the serial device it is connected to\n\ |
5503 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
5504 | remote_ops.to_open = remote_open; |
5505 | remote_ops.to_close = remote_close; | |
c906108c | 5506 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 5507 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 5508 | remote_ops.to_resume = remote_resume; |
c906108c SS |
5509 | remote_ops.to_wait = remote_wait; |
5510 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
5511 | remote_ops.to_store_registers = remote_store_registers; | |
5512 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 5513 | remote_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 5514 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
5515 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5516 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
5517 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
5518 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
5519 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; | |
5520 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
5521 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
5522 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
5523 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b JM |
5524 | remote_ops.to_kill = remote_kill; |
5525 | remote_ops.to_load = generic_load; | |
c906108c SS |
5526 | remote_ops.to_mourn_inferior = remote_mourn; |
5527 | remote_ops.to_thread_alive = remote_thread_alive; | |
0f71a2f6 | 5528 | remote_ops.to_find_new_threads = remote_threads_info; |
0caabb7e | 5529 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 5530 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
c906108c | 5531 | remote_ops.to_stop = remote_stop; |
4b8a223f | 5532 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 5533 | remote_ops.to_rcmd = remote_rcmd; |
38691318 | 5534 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; |
c906108c | 5535 | remote_ops.to_stratum = process_stratum; |
c5aa993b JM |
5536 | remote_ops.to_has_all_memory = 1; |
5537 | remote_ops.to_has_memory = 1; | |
5538 | remote_ops.to_has_stack = 1; | |
5539 | remote_ops.to_has_registers = 1; | |
5540 | remote_ops.to_has_execution = 1; | |
5541 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
5542 | remote_ops.to_magic = OPS_MAGIC; | |
c906108c SS |
5543 | } |
5544 | ||
5545 | /* Set up the extended remote vector by making a copy of the standard | |
5546 | remote vector and adding to it. */ | |
5547 | ||
5548 | static void | |
fba45db2 | 5549 | init_extended_remote_ops (void) |
c906108c SS |
5550 | { |
5551 | extended_remote_ops = remote_ops; | |
5552 | ||
0f71a2f6 | 5553 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 5554 | extended_remote_ops.to_longname = |
c906108c | 5555 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 5556 | extended_remote_ops.to_doc = |
c906108c SS |
5557 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
5558 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 5559 | extended_remote_ops.to_open = extended_remote_open; |
c906108c SS |
5560 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
5561 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
0f71a2f6 JM |
5562 | } |
5563 | ||
6426a772 JM |
5564 | static int |
5565 | remote_can_async_p (void) | |
5566 | { | |
23860348 | 5567 | /* We're async whenever the serial device is. */ |
2cd58942 | 5568 | return (current_target.to_async_mask_value) && serial_can_async_p (remote_desc); |
6426a772 JM |
5569 | } |
5570 | ||
5571 | static int | |
5572 | remote_is_async_p (void) | |
5573 | { | |
23860348 | 5574 | /* We're async whenever the serial device is. */ |
2cd58942 | 5575 | return (current_target.to_async_mask_value) && serial_is_async_p (remote_desc); |
6426a772 JM |
5576 | } |
5577 | ||
2acceee2 JM |
5578 | /* Pass the SERIAL event on and up to the client. One day this code |
5579 | will be able to delay notifying the client of an event until the | |
23860348 | 5580 | point where an entire packet has been received. */ |
2acceee2 | 5581 | |
23860348 MS |
5582 | static void (*async_client_callback) (enum inferior_event_type event_type, |
5583 | void *context); | |
2acceee2 JM |
5584 | static void *async_client_context; |
5585 | static serial_event_ftype remote_async_serial_handler; | |
5586 | ||
6426a772 | 5587 | static void |
819cc324 | 5588 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 5589 | { |
2acceee2 JM |
5590 | /* Don't propogate error information up to the client. Instead let |
5591 | the client find out about the error by querying the target. */ | |
5592 | async_client_callback (INF_REG_EVENT, async_client_context); | |
5593 | } | |
5594 | ||
5595 | static void | |
23860348 MS |
5596 | remote_async (void (*callback) (enum inferior_event_type event_type, |
5597 | void *context), void *context) | |
2acceee2 | 5598 | { |
ed9a39eb | 5599 | if (current_target.to_async_mask_value == 0) |
8e65ff28 | 5600 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5601 | _("Calling remote_async when async is masked")); |
ed9a39eb | 5602 | |
2acceee2 JM |
5603 | if (callback != NULL) |
5604 | { | |
2cd58942 | 5605 | serial_async (remote_desc, remote_async_serial_handler, NULL); |
2acceee2 JM |
5606 | async_client_callback = callback; |
5607 | async_client_context = context; | |
5608 | } | |
5609 | else | |
2cd58942 | 5610 | serial_async (remote_desc, NULL, NULL); |
6426a772 JM |
5611 | } |
5612 | ||
43ff13b4 JM |
5613 | /* Target async and target extended-async. |
5614 | ||
5615 | This are temporary targets, until it is all tested. Eventually | |
5616 | async support will be incorporated int the usual 'remote' | |
23860348 | 5617 | target. */ |
43ff13b4 JM |
5618 | |
5619 | static void | |
c2d11a7d | 5620 | init_remote_async_ops (void) |
43ff13b4 JM |
5621 | { |
5622 | remote_async_ops.to_shortname = "async"; | |
23860348 MS |
5623 | remote_async_ops.to_longname = |
5624 | "Remote serial target in async version of the gdb-specific protocol"; | |
c5aa993b | 5625 | remote_async_ops.to_doc = |
43ff13b4 JM |
5626 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
5627 | Specify the serial device it is connected to (e.g. /dev/ttya)."; | |
c5aa993b JM |
5628 | remote_async_ops.to_open = remote_async_open; |
5629 | remote_async_ops.to_close = remote_close; | |
6ad8ae5c DJ |
5630 | remote_async_ops.to_detach = remote_detach; |
5631 | remote_async_ops.to_disconnect = remote_disconnect; | |
c5aa993b JM |
5632 | remote_async_ops.to_resume = remote_async_resume; |
5633 | remote_async_ops.to_wait = remote_async_wait; | |
5634 | remote_async_ops.to_fetch_registers = remote_fetch_registers; | |
5635 | remote_async_ops.to_store_registers = remote_store_registers; | |
5636 | remote_async_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 5637 | remote_async_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 5638 | remote_async_ops.to_files_info = remote_files_info; |
43ff13b4 JM |
5639 | remote_async_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5640 | remote_async_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
5641 | remote_async_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
5642 | remote_async_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
5643 | remote_async_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
5644 | remote_async_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
5645 | remote_async_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
5646 | remote_async_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; | |
5647 | remote_async_ops.to_stopped_data_address = remote_stopped_data_address; | |
6426a772 JM |
5648 | remote_async_ops.to_terminal_inferior = remote_async_terminal_inferior; |
5649 | remote_async_ops.to_terminal_ours = remote_async_terminal_ours; | |
c5aa993b JM |
5650 | remote_async_ops.to_kill = remote_async_kill; |
5651 | remote_async_ops.to_load = generic_load; | |
53a5351d | 5652 | remote_async_ops.to_mourn_inferior = remote_async_mourn; |
c5aa993b JM |
5653 | remote_async_ops.to_thread_alive = remote_thread_alive; |
5654 | remote_async_ops.to_find_new_threads = remote_threads_info; | |
cf759d3b ND |
5655 | remote_async_ops.to_pid_to_str = remote_pid_to_str; |
5656 | remote_async_ops.to_extra_thread_info = remote_threads_extra_info; | |
43ff13b4 | 5657 | remote_async_ops.to_stop = remote_stop; |
4b8a223f | 5658 | remote_async_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 5659 | remote_async_ops.to_rcmd = remote_rcmd; |
c5aa993b JM |
5660 | remote_async_ops.to_stratum = process_stratum; |
5661 | remote_async_ops.to_has_all_memory = 1; | |
5662 | remote_async_ops.to_has_memory = 1; | |
5663 | remote_async_ops.to_has_stack = 1; | |
5664 | remote_async_ops.to_has_registers = 1; | |
5665 | remote_async_ops.to_has_execution = 1; | |
5666 | remote_async_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
6426a772 JM |
5667 | remote_async_ops.to_can_async_p = remote_can_async_p; |
5668 | remote_async_ops.to_is_async_p = remote_is_async_p; | |
5669 | remote_async_ops.to_async = remote_async; | |
ed9a39eb | 5670 | remote_async_ops.to_async_mask_value = 1; |
c5aa993b | 5671 | remote_async_ops.to_magic = OPS_MAGIC; |
43ff13b4 JM |
5672 | } |
5673 | ||
5674 | /* Set up the async extended remote vector by making a copy of the standard | |
5675 | remote vector and adding to it. */ | |
5676 | ||
5677 | static void | |
c2d11a7d | 5678 | init_extended_async_remote_ops (void) |
43ff13b4 JM |
5679 | { |
5680 | extended_async_remote_ops = remote_async_ops; | |
5681 | ||
5682 | extended_async_remote_ops.to_shortname = "extended-async"; | |
c5aa993b | 5683 | extended_async_remote_ops.to_longname = |
43ff13b4 | 5684 | "Extended remote serial target in async gdb-specific protocol"; |
c5aa993b | 5685 | extended_async_remote_ops.to_doc = |
43ff13b4 JM |
5686 | "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\ |
5687 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 5688 | extended_async_remote_ops.to_open = extended_remote_async_open; |
43ff13b4 JM |
5689 | extended_async_remote_ops.to_create_inferior = extended_remote_async_create_inferior; |
5690 | extended_async_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
5691 | } | |
5692 | ||
5a2468f5 | 5693 | static void |
c2d11a7d | 5694 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 5695 | { |
5a2468f5 JM |
5696 | } |
5697 | ||
d471ea57 AC |
5698 | static void |
5699 | show_remote_cmd (char *args, int from_tty) | |
5700 | { | |
37a105a1 DJ |
5701 | /* We can't just use cmd_show_list here, because we want to skip |
5702 | the redundant "show remote Z-packet". */ | |
5703 | struct cleanup *showlist_chain; | |
5704 | struct cmd_list_element *list = remote_show_cmdlist; | |
5705 | ||
5706 | showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist"); | |
5707 | for (; list != NULL; list = list->next) | |
5708 | if (strcmp (list->name, "Z-packet") == 0) | |
5709 | continue; | |
5710 | else if (list->type == show_cmd) | |
5711 | { | |
5712 | struct cleanup *option_chain | |
5713 | = make_cleanup_ui_out_tuple_begin_end (uiout, "option"); | |
5714 | ui_out_field_string (uiout, "name", list->name); | |
5715 | ui_out_text (uiout, ": "); | |
5716 | do_setshow_command ((char *) NULL, from_tty, list); | |
5717 | /* Close the tuple. */ | |
5718 | do_cleanups (option_chain); | |
5719 | } | |
d471ea57 | 5720 | } |
5a2468f5 | 5721 | |
0f71a2f6 | 5722 | static void |
fba45db2 | 5723 | build_remote_gdbarch_data (void) |
0f71a2f6 | 5724 | { |
d696208f | 5725 | remote_address_size = TARGET_ADDR_BIT; |
0f71a2f6 JM |
5726 | } |
5727 | ||
23860348 | 5728 | /* Saved pointer to previous owner of the new_objfile event. */ |
dc8acb97 MS |
5729 | static void (*remote_new_objfile_chain) (struct objfile *); |
5730 | ||
23860348 | 5731 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
5732 | static void |
5733 | remote_new_objfile (struct objfile *objfile) | |
5734 | { | |
23860348 | 5735 | if (remote_desc != 0) /* Have a remote connection. */ |
dc8acb97 MS |
5736 | { |
5737 | remote_check_symbols (objfile); | |
5738 | } | |
23860348 | 5739 | /* Call predecessor on chain, if any. */ |
dc8acb97 MS |
5740 | if (remote_new_objfile_chain != 0 && |
5741 | remote_desc == 0) | |
5742 | remote_new_objfile_chain (objfile); | |
5743 | } | |
5744 | ||
c906108c | 5745 | void |
fba45db2 | 5746 | _initialize_remote (void) |
c906108c | 5747 | { |
ea9c271d DJ |
5748 | struct remote_state *rs; |
5749 | ||
0f71a2f6 | 5750 | /* architecture specific data */ |
23860348 MS |
5751 | remote_gdbarch_data_handle = |
5752 | gdbarch_data_register_post_init (init_remote_state); | |
d01949b6 AC |
5753 | |
5754 | /* Old tacky stuff. NOTE: This comes after the remote protocol so | |
5755 | that the remote protocol has been initialized. */ | |
046a4708 AC |
5756 | DEPRECATED_REGISTER_GDBARCH_SWAP (remote_address_size); |
5757 | deprecated_register_gdbarch_swap (NULL, 0, build_remote_gdbarch_data); | |
0f71a2f6 | 5758 | |
ea9c271d DJ |
5759 | /* Initialize the per-target state. At the moment there is only one |
5760 | of these, not one per target. Only one target is active at a | |
5761 | time. The default buffer size is unimportant; it will be expanded | |
5762 | whenever a larger buffer is needed. */ | |
5763 | rs = get_remote_state (); | |
5764 | rs->buf_size = 400; | |
5765 | rs->buf = xmalloc (rs->buf_size); | |
5766 | ||
c906108c SS |
5767 | init_remote_ops (); |
5768 | add_target (&remote_ops); | |
5769 | ||
5770 | init_extended_remote_ops (); | |
5771 | add_target (&extended_remote_ops); | |
cce74817 | 5772 | |
43ff13b4 JM |
5773 | init_remote_async_ops (); |
5774 | add_target (&remote_async_ops); | |
5775 | ||
5776 | init_extended_async_remote_ops (); | |
5777 | add_target (&extended_async_remote_ops); | |
5778 | ||
dc8acb97 | 5779 | /* Hook into new objfile notification. */ |
9a4105ab AC |
5780 | remote_new_objfile_chain = deprecated_target_new_objfile_hook; |
5781 | deprecated_target_new_objfile_hook = remote_new_objfile; | |
dc8acb97 | 5782 | |
c906108c SS |
5783 | #if 0 |
5784 | init_remote_threadtests (); | |
5785 | #endif | |
5786 | ||
23860348 | 5787 | /* set/show remote ... */ |
d471ea57 | 5788 | |
1bedd215 | 5789 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
5790 | Remote protocol specific variables\n\ |
5791 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 5792 | the packets being used"), |
cff3e48b | 5793 | &remote_set_cmdlist, "set remote ", |
23860348 | 5794 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 5795 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
5796 | Remote protocol specific variables\n\ |
5797 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 5798 | the packets being used"), |
cff3e48b | 5799 | &remote_show_cmdlist, "show remote ", |
23860348 | 5800 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 5801 | |
1a966eab AC |
5802 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
5803 | Compare section data on target to the exec file.\n\ | |
5804 | Argument is a single section name (default: all loaded sections)."), | |
c906108c SS |
5805 | &cmdlist); |
5806 | ||
1a966eab AC |
5807 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
5808 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
5809 | maintenance packet TEXT\n\ |
5810 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
5811 | this command sends the string TEXT to the inferior, and displays the\n\ | |
5812 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 5813 | terminating `#' character and checksum."), |
c906108c SS |
5814 | &maintenancelist); |
5815 | ||
7915a72c AC |
5816 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
5817 | Set whether to send break if interrupted."), _("\ | |
5818 | Show whether to send break if interrupted."), _("\ | |
5819 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
2c5b56ce | 5820 | NULL, NULL, /* FIXME: i18n: Whether to send break if interrupted is %s. */ |
e707bbc2 | 5821 | &setlist, &showlist); |
c906108c | 5822 | |
23860348 | 5823 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 5824 | |
1a966eab AC |
5825 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
5826 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 5827 | &setlist); |
1a966eab AC |
5828 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
5829 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
5830 | &showlist); |
5831 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
5832 | set_memory_write_packet_size, _("\ |
5833 | Set the maximum number of bytes per memory-write packet.\n\ | |
5834 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
5835 | default packet size. The actual limit is further reduced\n\ | |
5836 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
5837 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
5838 | &remote_set_cmdlist); |
5839 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
5840 | set_memory_read_packet_size, _("\ |
5841 | Set the maximum number of bytes per memory-read packet.\n\ | |
5842 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
5843 | default packet size. The actual limit is further reduced\n\ | |
5844 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
5845 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
5846 | &remote_set_cmdlist); |
5847 | add_cmd ("memory-write-packet-size", no_class, | |
5848 | show_memory_write_packet_size, | |
1a966eab | 5849 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
5850 | &remote_show_cmdlist); |
5851 | add_cmd ("memory-read-packet-size", no_class, | |
5852 | show_memory_read_packet_size, | |
1a966eab | 5853 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 5854 | &remote_show_cmdlist); |
c906108c | 5855 | |
b3f42336 | 5856 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
5857 | &remote_hw_watchpoint_limit, _("\ |
5858 | Set the maximum number of target hardware watchpoints."), _("\ | |
5859 | Show the maximum number of target hardware watchpoints."), _("\ | |
5860 | Specify a negative limit for unlimited."), | |
2c5b56ce | 5861 | NULL, NULL, /* FIXME: i18n: The maximum number of target hardware watchpoints is %s. */ |
b3f42336 AC |
5862 | &remote_set_cmdlist, &remote_show_cmdlist); |
5863 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, | |
7915a72c AC |
5864 | &remote_hw_breakpoint_limit, _("\ |
5865 | Set the maximum number of target hardware breakpoints."), _("\ | |
5866 | Show the maximum number of target hardware breakpoints."), _("\ | |
5867 | Specify a negative limit for unlimited."), | |
2c5b56ce | 5868 | NULL, NULL, /* FIXME: i18n: The maximum number of target hardware breakpoints is %s. */ |
b3f42336 | 5869 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 5870 | |
4d28ad1e AC |
5871 | add_setshow_integer_cmd ("remoteaddresssize", class_obscure, |
5872 | &remote_address_size, _("\ | |
5873 | Set the maximum size of the address (in bits) in a memory packet."), _("\ | |
5874 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
5875 | NULL, | |
5876 | NULL, /* FIXME: i18n: */ | |
5877 | &setlist, &showlist); | |
c906108c | 5878 | |
444abaca | 5879 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 5880 | "X", "binary-download", 1); |
0f71a2f6 | 5881 | |
444abaca | 5882 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 5883 | "vCont", "verbose-resume", 0); |
506fb367 | 5884 | |
444abaca | 5885 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 5886 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 5887 | |
444abaca | 5888 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 5889 | "P", "set-register", 1); |
d471ea57 | 5890 | |
444abaca | 5891 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 5892 | "p", "fetch-register", 1); |
b96ec7ac | 5893 | |
444abaca | 5894 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 5895 | "Z0", "software-breakpoint", 0); |
d471ea57 | 5896 | |
444abaca | 5897 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 5898 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 5899 | |
444abaca | 5900 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 5901 | "Z2", "write-watchpoint", 0); |
d471ea57 | 5902 | |
444abaca | 5903 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 5904 | "Z3", "read-watchpoint", 0); |
d471ea57 | 5905 | |
444abaca | 5906 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 5907 | "Z4", "access-watchpoint", 0); |
d471ea57 | 5908 | |
444abaca | 5909 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qPart_auxv], |
bb572ddd | 5910 | "qPart:auxv", "read-aux-vector", 0); |
802188a7 | 5911 | |
444abaca | 5912 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 5913 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
5914 | 0); |
5915 | ||
be2a5f71 DJ |
5916 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
5917 | "qSupported", "supported-packets", 0); | |
5918 | ||
37a105a1 DJ |
5919 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
5920 | Z sub-packet has its own set and show commands, but users may | |
5921 | have sets to this variable in their .gdbinit files (or in their | |
5922 | documentation). */ | |
e9e68a56 | 5923 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
5924 | &remote_Z_packet_detect, _("\ |
5925 | Set use of remote protocol `Z' packets"), _("\ | |
5926 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 5927 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 5928 | packets."), |
e9e68a56 | 5929 | set_remote_protocol_Z_packet_cmd, |
2c5b56ce | 5930 | show_remote_protocol_Z_packet_cmd, /* FIXME: i18n: Use of remote protocol `Z' packets is %s. */ |
e9e68a56 | 5931 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 CV |
5932 | |
5933 | /* Eventually initialize fileio. See fileio.c */ | |
5934 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
c906108c | 5935 | } |