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 | ||
fd79ecee DJ |
63 | #include "memory-map.h" |
64 | ||
6765f3e5 DJ |
65 | /* The size to align memory write packets, when practical. The protocol |
66 | does not guarantee any alignment, and gdb will generate short | |
67 | writes and unaligned writes, but even as a best-effort attempt this | |
68 | can improve bulk transfers. For instance, if a write is misaligned | |
69 | relative to the target's data bus, the stub may need to make an extra | |
70 | round trip fetching data from the target. This doesn't make a | |
71 | huge difference, but it's easy to do, so we try to be helpful. | |
72 | ||
73 | The alignment chosen is arbitrary; usually data bus width is | |
74 | important here, not the possibly larger cache line size. */ | |
75 | enum { REMOTE_ALIGN_WRITES = 16 }; | |
76 | ||
23860348 | 77 | /* Prototypes for local functions. */ |
6426a772 JM |
78 | static void cleanup_sigint_signal_handler (void *dummy); |
79 | static void initialize_sigint_signal_handler (void); | |
6d820c5c | 80 | static int getpkt_sane (char **buf, long *sizeof_buf, int forever); |
6426a772 | 81 | |
a14ed312 KB |
82 | static void handle_remote_sigint (int); |
83 | static void handle_remote_sigint_twice (int); | |
84 | static void async_remote_interrupt (gdb_client_data); | |
85 | void async_remote_interrupt_twice (gdb_client_data); | |
43ff13b4 | 86 | |
a14ed312 | 87 | static void build_remote_gdbarch_data (void); |
0f71a2f6 | 88 | |
a14ed312 | 89 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 90 | |
a14ed312 | 91 | static void remote_prepare_to_store (void); |
c906108c | 92 | |
a14ed312 | 93 | static void remote_fetch_registers (int regno); |
c906108c | 94 | |
39f77062 KB |
95 | static void remote_resume (ptid_t ptid, int step, |
96 | enum target_signal siggnal); | |
97 | static void remote_async_resume (ptid_t ptid, int step, | |
a14ed312 | 98 | enum target_signal siggnal); |
a14ed312 KB |
99 | static void remote_open (char *name, int from_tty); |
100 | static void remote_async_open (char *name, int from_tty); | |
c906108c | 101 | |
a14ed312 KB |
102 | static void extended_remote_open (char *name, int from_tty); |
103 | static void extended_remote_async_open (char *name, int from_tty); | |
c906108c | 104 | |
92d1e331 DJ |
105 | static void remote_open_1 (char *, int, struct target_ops *, int extended_p, |
106 | int async_p); | |
c906108c | 107 | |
a14ed312 | 108 | static void remote_close (int quitting); |
c906108c | 109 | |
a14ed312 | 110 | static void remote_store_registers (int regno); |
c906108c | 111 | |
a14ed312 KB |
112 | static void remote_mourn (void); |
113 | static void remote_async_mourn (void); | |
c906108c | 114 | |
a14ed312 | 115 | static void extended_remote_restart (void); |
c906108c | 116 | |
a14ed312 | 117 | static void extended_remote_mourn (void); |
c906108c | 118 | |
a14ed312 | 119 | static void remote_mourn_1 (struct target_ops *); |
c906108c | 120 | |
6d820c5c | 121 | static void remote_send (char **buf, long *sizeof_buf_p); |
c906108c | 122 | |
a14ed312 | 123 | static int readchar (int timeout); |
c906108c | 124 | |
39f77062 KB |
125 | static ptid_t remote_wait (ptid_t ptid, |
126 | struct target_waitstatus *status); | |
127 | static ptid_t remote_async_wait (ptid_t ptid, | |
128 | struct target_waitstatus *status); | |
c906108c | 129 | |
a14ed312 KB |
130 | static void remote_kill (void); |
131 | static void remote_async_kill (void); | |
c906108c | 132 | |
a14ed312 | 133 | static int tohex (int nib); |
c906108c | 134 | |
a14ed312 | 135 | static void remote_detach (char *args, int from_tty); |
c906108c | 136 | |
a14ed312 | 137 | static void remote_interrupt (int signo); |
c906108c | 138 | |
a14ed312 | 139 | static void remote_interrupt_twice (int signo); |
7a292a7a | 140 | |
a14ed312 | 141 | static void interrupt_query (void); |
c906108c | 142 | |
a14ed312 | 143 | static void set_thread (int, int); |
c906108c | 144 | |
39f77062 | 145 | static int remote_thread_alive (ptid_t); |
c906108c | 146 | |
a14ed312 | 147 | static void get_offsets (void); |
c906108c | 148 | |
6d820c5c DJ |
149 | static void skip_frame (void); |
150 | ||
151 | static long read_frame (char **buf_p, long *sizeof_buf); | |
c906108c | 152 | |
a14ed312 | 153 | static int hexnumlen (ULONGEST num); |
c906108c | 154 | |
a14ed312 | 155 | static void init_remote_ops (void); |
c906108c | 156 | |
a14ed312 | 157 | static void init_extended_remote_ops (void); |
c906108c | 158 | |
a14ed312 | 159 | static void remote_stop (void); |
c906108c | 160 | |
a14ed312 | 161 | static int ishex (int ch, int *val); |
c906108c | 162 | |
a14ed312 | 163 | static int stubhex (int ch); |
c906108c | 164 | |
a14ed312 | 165 | static int hexnumstr (char *, ULONGEST); |
c906108c | 166 | |
a14ed312 | 167 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 168 | |
a14ed312 | 169 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 170 | |
a14ed312 | 171 | static void print_packet (char *); |
c906108c | 172 | |
a14ed312 | 173 | static unsigned long crc32 (unsigned char *, int, unsigned int); |
c906108c | 174 | |
a14ed312 | 175 | static void compare_sections_command (char *, int); |
c906108c | 176 | |
a14ed312 | 177 | static void packet_command (char *, int); |
c906108c | 178 | |
a14ed312 | 179 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 180 | |
39f77062 | 181 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 182 | |
a14ed312 | 183 | static void remote_find_new_threads (void); |
c906108c | 184 | |
a14ed312 | 185 | static void record_currthread (int currthread); |
c906108c | 186 | |
30559e10 | 187 | static int fromhex (int a); |
c906108c | 188 | |
cfd77fa1 | 189 | static int hex2bin (const char *hex, gdb_byte *bin, int count); |
c906108c | 190 | |
cfd77fa1 | 191 | static int bin2hex (const gdb_byte *bin, char *hex, int count); |
234fa6d1 | 192 | |
a14ed312 | 193 | static int putpkt_binary (char *buf, int cnt); |
c906108c | 194 | |
a14ed312 | 195 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 196 | |
5a2468f5 | 197 | struct packet_config; |
5a2468f5 | 198 | |
a14ed312 | 199 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 200 | |
d471ea57 | 201 | static void update_packet_config (struct packet_config *config); |
5a2468f5 | 202 | |
bb572ddd DJ |
203 | static void set_remote_protocol_packet_cmd (char *args, int from_tty, |
204 | struct cmd_list_element *c); | |
205 | ||
206 | static void show_remote_protocol_packet_cmd (struct ui_file *file, | |
207 | int from_tty, | |
208 | struct cmd_list_element *c, | |
209 | const char *value); | |
210 | ||
a14ed312 | 211 | void _initialize_remote (void); |
c906108c | 212 | |
bb572ddd DJ |
213 | /* For "set remote" and "show remote". */ |
214 | ||
215 | static struct cmd_list_element *remote_set_cmdlist; | |
216 | static struct cmd_list_element *remote_show_cmdlist; | |
217 | ||
ea9c271d DJ |
218 | /* Description of the remote protocol state for the currently |
219 | connected target. This is per-target state, and independent of the | |
220 | selected architecture. */ | |
221 | ||
222 | struct remote_state | |
223 | { | |
224 | /* A buffer to use for incoming packets, and its current size. The | |
225 | buffer is grown dynamically for larger incoming packets. | |
226 | Outgoing packets may also be constructed in this buffer. | |
227 | BUF_SIZE is always at least REMOTE_PACKET_SIZE; | |
228 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing | |
229 | packets. */ | |
230 | char *buf; | |
231 | long buf_size; | |
be2a5f71 DJ |
232 | |
233 | /* If we negotiated packet size explicitly (and thus can bypass | |
234 | heuristics for the largest packet size that will not overflow | |
235 | a buffer in the stub), this will be set to that packet size. | |
236 | Otherwise zero, meaning to use the guessed size. */ | |
237 | long explicit_packet_size; | |
ea9c271d DJ |
238 | }; |
239 | ||
240 | /* This data could be associated with a target, but we do not always | |
241 | have access to the current target when we need it, so for now it is | |
242 | static. This will be fine for as long as only one target is in use | |
243 | at a time. */ | |
244 | static struct remote_state remote_state; | |
245 | ||
246 | static struct remote_state * | |
0b83947e | 247 | get_remote_state_raw (void) |
ea9c271d DJ |
248 | { |
249 | return &remote_state; | |
250 | } | |
251 | ||
252 | /* Description of the remote protocol for a given architecture. */ | |
d01949b6 | 253 | |
ad10f812 AC |
254 | struct packet_reg |
255 | { | |
256 | long offset; /* Offset into G packet. */ | |
257 | long regnum; /* GDB's internal register number. */ | |
258 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 259 | int in_g_packet; /* Always part of G packet. */ |
2bc416ba | 260 | /* long size in bytes; == register_size (current_gdbarch, regnum); |
23860348 | 261 | at present. */ |
ad10f812 AC |
262 | /* char *name; == REGISTER_NAME (regnum); at present. */ |
263 | }; | |
264 | ||
ea9c271d | 265 | struct remote_arch_state |
d01949b6 | 266 | { |
ad10f812 AC |
267 | /* Description of the remote protocol registers. */ |
268 | long sizeof_g_packet; | |
b323314b AC |
269 | |
270 | /* Description of the remote protocol registers indexed by REGNUM | |
271 | (making an array of NUM_REGS + NUM_PSEUDO_REGS in size). */ | |
272 | struct packet_reg *regs; | |
ad10f812 | 273 | |
d01949b6 AC |
274 | /* This is the size (in chars) of the first response to the ``g'' |
275 | packet. It is used as a heuristic when determining the maximum | |
276 | size of memory-read and memory-write packets. A target will | |
277 | typically only reserve a buffer large enough to hold the ``g'' | |
278 | packet. The size does not include packet overhead (headers and | |
23860348 | 279 | trailers). */ |
d01949b6 AC |
280 | long actual_register_packet_size; |
281 | ||
282 | /* This is the maximum size (in chars) of a non read/write packet. | |
23860348 | 283 | It is also used as a cap on the size of read/write packets. */ |
d01949b6 AC |
284 | long remote_packet_size; |
285 | }; | |
286 | ||
3c3bea1c | 287 | |
d01949b6 AC |
288 | /* Handle for retreving the remote protocol data from gdbarch. */ |
289 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
290 | ||
ea9c271d DJ |
291 | static struct remote_arch_state * |
292 | get_remote_arch_state (void) | |
d01949b6 | 293 | { |
451fbdda | 294 | return gdbarch_data (current_gdbarch, remote_gdbarch_data_handle); |
d01949b6 AC |
295 | } |
296 | ||
0b83947e DJ |
297 | /* Fetch the global remote target state. */ |
298 | ||
299 | static struct remote_state * | |
300 | get_remote_state (void) | |
301 | { | |
302 | /* Make sure that the remote architecture state has been | |
303 | initialized, because doing so might reallocate rs->buf. Any | |
304 | function which calls getpkt also needs to be mindful of changes | |
305 | to rs->buf, but this call limits the number of places which run | |
306 | into trouble. */ | |
307 | get_remote_arch_state (); | |
308 | ||
309 | return get_remote_state_raw (); | |
310 | } | |
311 | ||
d01949b6 AC |
312 | static void * |
313 | init_remote_state (struct gdbarch *gdbarch) | |
314 | { | |
315 | int regnum; | |
0b83947e | 316 | struct remote_state *rs = get_remote_state_raw (); |
ea9c271d DJ |
317 | struct remote_arch_state *rsa; |
318 | ||
319 | rsa = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_arch_state); | |
d01949b6 | 320 | |
ea9c271d | 321 | rsa->sizeof_g_packet = 0; |
ad10f812 | 322 | |
b323314b | 323 | /* Assume a 1:1 regnum<->pnum table. */ |
ea9c271d DJ |
324 | rsa->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, NUM_REGS + NUM_PSEUDO_REGS, |
325 | struct packet_reg); | |
b323314b | 326 | for (regnum = 0; regnum < NUM_REGS + NUM_PSEUDO_REGS; regnum++) |
ad10f812 | 327 | { |
ea9c271d | 328 | struct packet_reg *r = &rsa->regs[regnum]; |
b323314b AC |
329 | r->pnum = regnum; |
330 | r->regnum = regnum; | |
62700349 | 331 | r->offset = DEPRECATED_REGISTER_BYTE (regnum); |
b323314b | 332 | r->in_g_packet = (regnum < NUM_REGS); |
ad10f812 | 333 | /* ...name = REGISTER_NAME (regnum); */ |
7d58c67d | 334 | |
23860348 | 335 | /* Compute packet size by accumulating the size of all registers. */ |
46845f5e | 336 | if (regnum < NUM_REGS) |
ea9c271d | 337 | rsa->sizeof_g_packet += register_size (current_gdbarch, regnum); |
ad10f812 AC |
338 | } |
339 | ||
d01949b6 AC |
340 | /* Default maximum number of characters in a packet body. Many |
341 | remote stubs have a hardwired buffer size of 400 bytes | |
342 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
343 | as the maximum packet-size to ensure that the packet and an extra | |
344 | NUL character can always fit in the buffer. This stops GDB | |
345 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d DJ |
346 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
347 | rsa->remote_packet_size = 400 - 1; | |
d01949b6 | 348 | |
ea9c271d DJ |
349 | /* This one is filled in when a ``g'' packet is received. */ |
350 | rsa->actual_register_packet_size = 0; | |
351 | ||
352 | /* Should rsa->sizeof_g_packet needs more space than the | |
ad10f812 AC |
353 | default, adjust the size accordingly. Remember that each byte is |
354 | encoded as two characters. 32 is the overhead for the packet | |
355 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 356 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 357 | little. */ |
ea9c271d DJ |
358 | if (rsa->sizeof_g_packet > ((rsa->remote_packet_size - 32) / 2)) |
359 | rsa->remote_packet_size = (rsa->sizeof_g_packet * 2 + 32); | |
802188a7 | 360 | |
ea9c271d DJ |
361 | /* Make sure that the packet buffer is plenty big enough for |
362 | this architecture. */ | |
363 | if (rs->buf_size < rsa->remote_packet_size) | |
364 | { | |
365 | rs->buf_size = 2 * rsa->remote_packet_size; | |
7fca722e | 366 | rs->buf = xrealloc (rs->buf, rs->buf_size); |
ea9c271d | 367 | } |
6d820c5c | 368 | |
ea9c271d DJ |
369 | return rsa; |
370 | } | |
371 | ||
372 | /* Return the current allowed size of a remote packet. This is | |
373 | inferred from the current architecture, and should be used to | |
374 | limit the length of outgoing packets. */ | |
375 | static long | |
376 | get_remote_packet_size (void) | |
377 | { | |
be2a5f71 | 378 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
379 | struct remote_arch_state *rsa = get_remote_arch_state (); |
380 | ||
be2a5f71 DJ |
381 | if (rs->explicit_packet_size) |
382 | return rs->explicit_packet_size; | |
383 | ||
ea9c271d | 384 | return rsa->remote_packet_size; |
d01949b6 AC |
385 | } |
386 | ||
ad10f812 | 387 | static struct packet_reg * |
ea9c271d | 388 | packet_reg_from_regnum (struct remote_arch_state *rsa, long regnum) |
ad10f812 | 389 | { |
b323314b AC |
390 | if (regnum < 0 && regnum >= NUM_REGS + NUM_PSEUDO_REGS) |
391 | return NULL; | |
392 | else | |
ad10f812 | 393 | { |
ea9c271d | 394 | struct packet_reg *r = &rsa->regs[regnum]; |
b323314b AC |
395 | gdb_assert (r->regnum == regnum); |
396 | return r; | |
ad10f812 | 397 | } |
ad10f812 AC |
398 | } |
399 | ||
400 | static struct packet_reg * | |
ea9c271d | 401 | packet_reg_from_pnum (struct remote_arch_state *rsa, LONGEST pnum) |
ad10f812 | 402 | { |
b323314b AC |
403 | int i; |
404 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) | |
ad10f812 | 405 | { |
ea9c271d | 406 | struct packet_reg *r = &rsa->regs[i]; |
b323314b AC |
407 | if (r->pnum == pnum) |
408 | return r; | |
ad10f812 AC |
409 | } |
410 | return NULL; | |
d01949b6 AC |
411 | } |
412 | ||
3c3bea1c GS |
413 | /* FIXME: graces/2002-08-08: These variables should eventually be |
414 | bound to an instance of the target object (as in gdbarch-tdep()), | |
415 | when such a thing exists. */ | |
416 | ||
417 | /* This is set to the data address of the access causing the target | |
418 | to stop for a watchpoint. */ | |
419 | static CORE_ADDR remote_watch_data_address; | |
420 | ||
94e08568 | 421 | /* This is non-zero if target stopped for a watchpoint. */ |
3c3bea1c GS |
422 | static int remote_stopped_by_watchpoint_p; |
423 | ||
c906108c SS |
424 | static struct target_ops remote_ops; |
425 | ||
426 | static struct target_ops extended_remote_ops; | |
427 | ||
43ff13b4 | 428 | /* Temporary target ops. Just like the remote_ops and |
23860348 | 429 | extended_remote_ops, but with asynchronous support. */ |
43ff13b4 JM |
430 | static struct target_ops remote_async_ops; |
431 | ||
432 | static struct target_ops extended_async_remote_ops; | |
433 | ||
6426a772 JM |
434 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
435 | ``forever'' still use the normal timeout mechanism. This is | |
436 | currently used by the ASYNC code to guarentee that target reads | |
437 | during the initial connect always time-out. Once getpkt has been | |
438 | modified to return a timeout indication and, in turn | |
439 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 440 | this can go away. */ |
6426a772 JM |
441 | static int wait_forever_enabled_p = 1; |
442 | ||
443 | ||
c906108c SS |
444 | /* This variable chooses whether to send a ^C or a break when the user |
445 | requests program interruption. Although ^C is usually what remote | |
446 | systems expect, and that is the default here, sometimes a break is | |
447 | preferable instead. */ | |
448 | ||
449 | static int remote_break; | |
450 | ||
c906108c SS |
451 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
452 | remote_open knows that we don't have a file open when the program | |
453 | starts. */ | |
819cc324 | 454 | static struct serial *remote_desc = NULL; |
c906108c | 455 | |
c906108c SS |
456 | /* This variable sets the number of bits in an address that are to be |
457 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
458 | leading zeros, the entire address would be sent. This variable | |
459 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The | |
460 | initial implementation of remote.c restricted the address sent in | |
461 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
462 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
463 | address was never sent. Since fixing this bug may cause a break in | |
464 | some remote targets this variable is principly provided to | |
23860348 | 465 | facilitate backward compatibility. */ |
c906108c SS |
466 | |
467 | static int remote_address_size; | |
468 | ||
6426a772 JM |
469 | /* Tempoary to track who currently owns the terminal. See |
470 | target_async_terminal_* for more details. */ | |
471 | ||
472 | static int remote_async_terminal_ours_p; | |
473 | ||
11cf8741 | 474 | \f |
11cf8741 | 475 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
476 | memory read/write packet. MIN (rsa->remote_packet_size, |
477 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 478 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
479 | (speed up transfers). The variables ``preferred_*'' (the user |
480 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 481 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
482 | |
483 | struct memory_packet_config | |
484 | { | |
485 | char *name; | |
486 | long size; | |
487 | int fixed_p; | |
488 | }; | |
489 | ||
490 | /* Compute the current size of a read/write packet. Since this makes | |
491 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
492 | ||
493 | static long | |
494 | get_memory_packet_size (struct memory_packet_config *config) | |
495 | { | |
d01949b6 | 496 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
497 | struct remote_arch_state *rsa = get_remote_arch_state (); |
498 | ||
11cf8741 JM |
499 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk |
500 | law?) that some hosts don't cope very well with large alloca() | |
501 | calls. Eventually the alloca() code will be replaced by calls to | |
502 | xmalloc() and make_cleanups() allowing this restriction to either | |
23860348 | 503 | be lifted or removed. */ |
11cf8741 JM |
504 | #ifndef MAX_REMOTE_PACKET_SIZE |
505 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
506 | #endif | |
3de11b2e | 507 | /* NOTE: 20 ensures we can write at least one byte. */ |
11cf8741 | 508 | #ifndef MIN_REMOTE_PACKET_SIZE |
3de11b2e | 509 | #define MIN_REMOTE_PACKET_SIZE 20 |
11cf8741 JM |
510 | #endif |
511 | long what_they_get; | |
512 | if (config->fixed_p) | |
513 | { | |
514 | if (config->size <= 0) | |
515 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
516 | else | |
517 | what_they_get = config->size; | |
518 | } | |
519 | else | |
520 | { | |
ea9c271d | 521 | what_they_get = get_remote_packet_size (); |
23860348 | 522 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
523 | if (config->size > 0 |
524 | && what_they_get > config->size) | |
525 | what_they_get = config->size; | |
be2a5f71 DJ |
526 | |
527 | /* Limit it to the size of the targets ``g'' response unless we have | |
528 | permission from the stub to use a larger packet size. */ | |
529 | if (rs->explicit_packet_size == 0 | |
530 | && rsa->actual_register_packet_size > 0 | |
531 | && what_they_get > rsa->actual_register_packet_size) | |
532 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 JM |
533 | } |
534 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
535 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
536 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
537 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
6d820c5c DJ |
538 | |
539 | /* Make sure there is room in the global buffer for this packet | |
540 | (including its trailing NUL byte). */ | |
541 | if (rs->buf_size < what_they_get + 1) | |
542 | { | |
543 | rs->buf_size = 2 * what_they_get; | |
544 | rs->buf = xrealloc (rs->buf, 2 * what_they_get); | |
545 | } | |
546 | ||
11cf8741 JM |
547 | return what_they_get; |
548 | } | |
549 | ||
550 | /* Update the size of a read/write packet. If they user wants | |
23860348 | 551 | something really big then do a sanity check. */ |
11cf8741 JM |
552 | |
553 | static void | |
554 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
555 | { | |
556 | int fixed_p = config->fixed_p; | |
557 | long size = config->size; | |
558 | if (args == NULL) | |
8a3fe4f8 | 559 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
560 | else if (strcmp (args, "hard") == 0 |
561 | || strcmp (args, "fixed") == 0) | |
562 | fixed_p = 1; | |
563 | else if (strcmp (args, "soft") == 0 | |
564 | || strcmp (args, "limit") == 0) | |
565 | fixed_p = 0; | |
566 | else | |
567 | { | |
568 | char *end; | |
569 | size = strtoul (args, &end, 0); | |
570 | if (args == end) | |
8a3fe4f8 | 571 | error (_("Invalid %s (bad syntax)."), config->name); |
11cf8741 JM |
572 | #if 0 |
573 | /* Instead of explicitly capping the size of a packet to | |
574 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
575 | instead allowed to set the size to something arbitrarily | |
23860348 | 576 | large. */ |
11cf8741 | 577 | if (size > MAX_REMOTE_PACKET_SIZE) |
8a3fe4f8 | 578 | error (_("Invalid %s (too large)."), config->name); |
11cf8741 JM |
579 | #endif |
580 | } | |
23860348 | 581 | /* Extra checks? */ |
11cf8741 JM |
582 | if (fixed_p && !config->fixed_p) |
583 | { | |
e2e0b3e5 AC |
584 | if (! query (_("The target may not be able to correctly handle a %s\n" |
585 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 586 | config->name, size)) |
8a3fe4f8 | 587 | error (_("Packet size not changed.")); |
11cf8741 | 588 | } |
23860348 | 589 | /* Update the config. */ |
11cf8741 JM |
590 | config->fixed_p = fixed_p; |
591 | config->size = size; | |
592 | } | |
593 | ||
594 | static void | |
595 | show_memory_packet_size (struct memory_packet_config *config) | |
596 | { | |
a3f17187 | 597 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 598 | if (config->fixed_p) |
a3f17187 | 599 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
600 | get_memory_packet_size (config)); |
601 | else | |
a3f17187 | 602 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
603 | get_memory_packet_size (config)); |
604 | } | |
605 | ||
606 | static struct memory_packet_config memory_write_packet_config = | |
607 | { | |
608 | "memory-write-packet-size", | |
609 | }; | |
610 | ||
611 | static void | |
612 | set_memory_write_packet_size (char *args, int from_tty) | |
613 | { | |
614 | set_memory_packet_size (args, &memory_write_packet_config); | |
615 | } | |
616 | ||
617 | static void | |
618 | show_memory_write_packet_size (char *args, int from_tty) | |
619 | { | |
620 | show_memory_packet_size (&memory_write_packet_config); | |
621 | } | |
622 | ||
623 | static long | |
624 | get_memory_write_packet_size (void) | |
625 | { | |
626 | return get_memory_packet_size (&memory_write_packet_config); | |
627 | } | |
628 | ||
629 | static struct memory_packet_config memory_read_packet_config = | |
630 | { | |
631 | "memory-read-packet-size", | |
632 | }; | |
633 | ||
634 | static void | |
635 | set_memory_read_packet_size (char *args, int from_tty) | |
636 | { | |
637 | set_memory_packet_size (args, &memory_read_packet_config); | |
638 | } | |
639 | ||
640 | static void | |
641 | show_memory_read_packet_size (char *args, int from_tty) | |
642 | { | |
643 | show_memory_packet_size (&memory_read_packet_config); | |
644 | } | |
645 | ||
646 | static long | |
647 | get_memory_read_packet_size (void) | |
648 | { | |
649 | long size = get_memory_packet_size (&memory_read_packet_config); | |
650 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an | |
651 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
652 | increased beyond this. */ |
653 | if (size > get_remote_packet_size ()) | |
654 | size = get_remote_packet_size (); | |
11cf8741 JM |
655 | return size; |
656 | } | |
657 | ||
11cf8741 | 658 | \f |
5a2468f5 JM |
659 | /* Generic configuration support for packets the stub optionally |
660 | supports. Allows the user to specify the use of the packet as well | |
23860348 | 661 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
662 | |
663 | enum packet_support | |
664 | { | |
665 | PACKET_SUPPORT_UNKNOWN = 0, | |
666 | PACKET_ENABLE, | |
667 | PACKET_DISABLE | |
668 | }; | |
669 | ||
5a2468f5 JM |
670 | struct packet_config |
671 | { | |
bb572ddd DJ |
672 | const char *name; |
673 | const char *title; | |
7f19b9a2 | 674 | enum auto_boolean detect; |
5a2468f5 JM |
675 | enum packet_support support; |
676 | }; | |
677 | ||
d471ea57 | 678 | /* Analyze a packet's return value and update the packet config |
23860348 | 679 | accordingly. */ |
d471ea57 AC |
680 | |
681 | enum packet_result | |
682 | { | |
683 | PACKET_ERROR, | |
684 | PACKET_OK, | |
685 | PACKET_UNKNOWN | |
686 | }; | |
687 | ||
5a2468f5 | 688 | static void |
d471ea57 | 689 | update_packet_config (struct packet_config *config) |
5a2468f5 | 690 | { |
d471ea57 AC |
691 | switch (config->detect) |
692 | { | |
7f19b9a2 | 693 | case AUTO_BOOLEAN_TRUE: |
d471ea57 AC |
694 | config->support = PACKET_ENABLE; |
695 | break; | |
7f19b9a2 | 696 | case AUTO_BOOLEAN_FALSE: |
d471ea57 AC |
697 | config->support = PACKET_DISABLE; |
698 | break; | |
7f19b9a2 | 699 | case AUTO_BOOLEAN_AUTO: |
d471ea57 AC |
700 | config->support = PACKET_SUPPORT_UNKNOWN; |
701 | break; | |
702 | } | |
5a2468f5 JM |
703 | } |
704 | ||
705 | static void | |
fba45db2 | 706 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
707 | { |
708 | char *support = "internal-error"; | |
709 | switch (config->support) | |
710 | { | |
711 | case PACKET_ENABLE: | |
712 | support = "enabled"; | |
713 | break; | |
714 | case PACKET_DISABLE: | |
715 | support = "disabled"; | |
716 | break; | |
717 | case PACKET_SUPPORT_UNKNOWN: | |
718 | support = "unknown"; | |
719 | break; | |
720 | } | |
721 | switch (config->detect) | |
722 | { | |
7f19b9a2 | 723 | case AUTO_BOOLEAN_AUTO: |
37a105a1 DJ |
724 | printf_filtered (_("Support for the `%s' packet is auto-detected, currently %s.\n"), |
725 | config->name, support); | |
5a2468f5 | 726 | break; |
7f19b9a2 AC |
727 | case AUTO_BOOLEAN_TRUE: |
728 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
729 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
730 | config->name, support); | |
8e248173 | 731 | break; |
5a2468f5 JM |
732 | } |
733 | } | |
734 | ||
735 | static void | |
bb572ddd DJ |
736 | add_packet_config_cmd (struct packet_config *config, const char *name, |
737 | const char *title, int legacy) | |
d471ea57 | 738 | { |
5a2468f5 JM |
739 | char *set_doc; |
740 | char *show_doc; | |
d471ea57 | 741 | char *cmd_name; |
3ed07be4 | 742 | |
5a2468f5 JM |
743 | config->name = name; |
744 | config->title = title; | |
7f19b9a2 | 745 | config->detect = AUTO_BOOLEAN_AUTO; |
8e248173 | 746 | config->support = PACKET_SUPPORT_UNKNOWN; |
b435e160 AC |
747 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
748 | name, title); | |
749 | show_doc = xstrprintf ("Show current use of remote protocol `%s' (%s) packet", | |
750 | name, title); | |
d471ea57 | 751 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 752 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 753 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
2c5b56ce | 754 | &config->detect, set_doc, show_doc, NULL, /* help_doc */ |
bb572ddd DJ |
755 | set_remote_protocol_packet_cmd, |
756 | show_remote_protocol_packet_cmd, | |
757 | &remote_set_cmdlist, &remote_show_cmdlist); | |
23860348 | 758 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
759 | if (legacy) |
760 | { | |
761 | char *legacy_name; | |
b435e160 | 762 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 763 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 764 | &remote_set_cmdlist); |
d471ea57 | 765 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 766 | &remote_show_cmdlist); |
d471ea57 | 767 | } |
5a2468f5 JM |
768 | } |
769 | ||
d471ea57 | 770 | static enum packet_result |
a76d924d | 771 | packet_check_result (const char *buf) |
5a2468f5 | 772 | { |
d471ea57 | 773 | if (buf[0] != '\0') |
5a2468f5 | 774 | { |
d471ea57 | 775 | /* The stub recognized the packet request. Check that the |
23860348 | 776 | operation succeeded. */ |
a76d924d DJ |
777 | if (buf[0] == 'E' |
778 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
779 | && buf[3] == '\0') | |
780 | /* "Enn" - definitly an error. */ | |
781 | return PACKET_ERROR; | |
782 | ||
783 | /* Always treat "E." as an error. This will be used for | |
784 | more verbose error messages, such as E.memtypes. */ | |
785 | if (buf[0] == 'E' && buf[1] == '.') | |
786 | return PACKET_ERROR; | |
787 | ||
788 | /* The packet may or may not be OK. Just assume it is. */ | |
789 | return PACKET_OK; | |
790 | } | |
791 | else | |
792 | /* The stub does not support the packet. */ | |
793 | return PACKET_UNKNOWN; | |
794 | } | |
795 | ||
796 | static enum packet_result | |
797 | packet_ok (const char *buf, struct packet_config *config) | |
798 | { | |
799 | enum packet_result result; | |
800 | ||
801 | result = packet_check_result (buf); | |
802 | switch (result) | |
803 | { | |
804 | case PACKET_OK: | |
805 | case PACKET_ERROR: | |
806 | /* The stub recognized the packet request. */ | |
d471ea57 AC |
807 | switch (config->support) |
808 | { | |
809 | case PACKET_SUPPORT_UNKNOWN: | |
810 | if (remote_debug) | |
811 | fprintf_unfiltered (gdb_stdlog, | |
812 | "Packet %s (%s) is supported\n", | |
813 | config->name, config->title); | |
814 | config->support = PACKET_ENABLE; | |
815 | break; | |
816 | case PACKET_DISABLE: | |
8e65ff28 | 817 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 818 | _("packet_ok: attempt to use a disabled packet")); |
d471ea57 AC |
819 | break; |
820 | case PACKET_ENABLE: | |
821 | break; | |
822 | } | |
a76d924d DJ |
823 | break; |
824 | case PACKET_UNKNOWN: | |
23860348 | 825 | /* The stub does not support the packet. */ |
d471ea57 AC |
826 | switch (config->support) |
827 | { | |
828 | case PACKET_ENABLE: | |
7f19b9a2 | 829 | if (config->detect == AUTO_BOOLEAN_AUTO) |
d471ea57 | 830 | /* If the stub previously indicated that the packet was |
23860348 | 831 | supported then there is a protocol error.. */ |
8a3fe4f8 | 832 | error (_("Protocol error: %s (%s) conflicting enabled responses."), |
d471ea57 AC |
833 | config->name, config->title); |
834 | else | |
23860348 | 835 | /* The user set it wrong. */ |
8a3fe4f8 | 836 | error (_("Enabled packet %s (%s) not recognized by stub"), |
d471ea57 AC |
837 | config->name, config->title); |
838 | break; | |
839 | case PACKET_SUPPORT_UNKNOWN: | |
840 | if (remote_debug) | |
841 | fprintf_unfiltered (gdb_stdlog, | |
842 | "Packet %s (%s) is NOT supported\n", | |
843 | config->name, config->title); | |
844 | config->support = PACKET_DISABLE; | |
845 | break; | |
846 | case PACKET_DISABLE: | |
847 | break; | |
848 | } | |
a76d924d | 849 | break; |
5a2468f5 | 850 | } |
a76d924d DJ |
851 | |
852 | return result; | |
5a2468f5 JM |
853 | } |
854 | ||
444abaca DJ |
855 | enum { |
856 | PACKET_vCont = 0, | |
857 | PACKET_X, | |
858 | PACKET_qSymbol, | |
859 | PACKET_P, | |
860 | PACKET_p, | |
861 | PACKET_Z0, | |
862 | PACKET_Z1, | |
863 | PACKET_Z2, | |
864 | PACKET_Z3, | |
865 | PACKET_Z4, | |
0876f84a | 866 | PACKET_qXfer_auxv, |
fd79ecee | 867 | PACKET_qXfer_memory_map, |
444abaca | 868 | PACKET_qGetTLSAddr, |
be2a5f71 | 869 | PACKET_qSupported, |
444abaca DJ |
870 | PACKET_MAX |
871 | }; | |
506fb367 | 872 | |
444abaca | 873 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 MS |
874 | |
875 | static void | |
444abaca DJ |
876 | set_remote_protocol_packet_cmd (char *args, int from_tty, |
877 | struct cmd_list_element *c) | |
dc8acb97 | 878 | { |
444abaca | 879 | struct packet_config *packet; |
dc8acb97 | 880 | |
444abaca DJ |
881 | for (packet = remote_protocol_packets; |
882 | packet < &remote_protocol_packets[PACKET_MAX]; | |
883 | packet++) | |
884 | { | |
885 | if (&packet->detect == c->var) | |
886 | { | |
887 | update_packet_config (packet); | |
888 | return; | |
889 | } | |
890 | } | |
891 | internal_error (__FILE__, __LINE__, "Could not find config for %s", | |
892 | c->name); | |
dc8acb97 MS |
893 | } |
894 | ||
5a2468f5 | 895 | static void |
444abaca DJ |
896 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
897 | struct cmd_list_element *c, | |
898 | const char *value) | |
5a2468f5 | 899 | { |
444abaca | 900 | struct packet_config *packet; |
5a2468f5 | 901 | |
444abaca DJ |
902 | for (packet = remote_protocol_packets; |
903 | packet < &remote_protocol_packets[PACKET_MAX]; | |
904 | packet++) | |
905 | { | |
906 | if (&packet->detect == c->var) | |
907 | { | |
908 | show_packet_config_cmd (packet); | |
909 | return; | |
910 | } | |
911 | } | |
912 | internal_error (__FILE__, __LINE__, "Could not find config for %s", | |
913 | c->name); | |
5a2468f5 JM |
914 | } |
915 | ||
d471ea57 AC |
916 | /* Should we try one of the 'Z' requests? */ |
917 | ||
918 | enum Z_packet_type | |
919 | { | |
920 | Z_PACKET_SOFTWARE_BP, | |
921 | Z_PACKET_HARDWARE_BP, | |
922 | Z_PACKET_WRITE_WP, | |
923 | Z_PACKET_READ_WP, | |
924 | Z_PACKET_ACCESS_WP, | |
925 | NR_Z_PACKET_TYPES | |
926 | }; | |
96baa820 | 927 | |
d471ea57 | 928 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 929 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 930 | |
7f19b9a2 | 931 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
932 | |
933 | static void | |
fba45db2 KB |
934 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
935 | struct cmd_list_element *c) | |
96baa820 | 936 | { |
d471ea57 AC |
937 | int i; |
938 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
939 | { | |
444abaca DJ |
940 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
941 | update_packet_config (&remote_protocol_packets[PACKET_Z0 + i]); | |
d471ea57 | 942 | } |
96baa820 JM |
943 | } |
944 | ||
945 | static void | |
08546159 AC |
946 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
947 | struct cmd_list_element *c, | |
948 | const char *value) | |
96baa820 | 949 | { |
d471ea57 AC |
950 | int i; |
951 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
952 | { | |
444abaca | 953 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 954 | } |
96baa820 JM |
955 | } |
956 | ||
9d1f7ab2 MS |
957 | /* Should we try the 'ThreadInfo' query packet? |
958 | ||
959 | This variable (NOT available to the user: auto-detect only!) | |
960 | determines whether GDB will use the new, simpler "ThreadInfo" | |
961 | query or the older, more complex syntax for thread queries. | |
802188a7 | 962 | This is an auto-detect variable (set to true at each connect, |
9d1f7ab2 MS |
963 | and set to false when the target fails to recognize it). */ |
964 | ||
965 | static int use_threadinfo_query; | |
966 | static int use_threadextra_query; | |
967 | ||
23860348 | 968 | /* Tokens for use by the asynchronous signal handlers for SIGINT. */ |
ae44c0c4 AC |
969 | static void *sigint_remote_twice_token; |
970 | static void *sigint_remote_token; | |
43ff13b4 | 971 | |
c906108c SS |
972 | /* These are pointers to hook functions that may be set in order to |
973 | modify resume/wait behavior for a particular architecture. */ | |
974 | ||
9a4105ab AC |
975 | void (*deprecated_target_resume_hook) (void); |
976 | void (*deprecated_target_wait_loop_hook) (void); | |
c906108c SS |
977 | \f |
978 | ||
c5aa993b | 979 | |
c906108c SS |
980 | /* These are the threads which we last sent to the remote system. |
981 | -1 for all or -2 for not sent yet. */ | |
982 | static int general_thread; | |
cce74817 | 983 | static int continue_thread; |
c906108c SS |
984 | |
985 | /* Call this function as a result of | |
986 | 1) A halt indication (T packet) containing a thread id | |
987 | 2) A direct query of currthread | |
988 | 3) Successful execution of set thread | |
989 | */ | |
990 | ||
991 | static void | |
fba45db2 | 992 | record_currthread (int currthread) |
c906108c | 993 | { |
c906108c | 994 | general_thread = currthread; |
cce74817 | 995 | |
c906108c SS |
996 | /* If this is a new thread, add it to GDB's thread list. |
997 | If we leave it up to WFI to do this, bad things will happen. */ | |
39f77062 | 998 | if (!in_thread_list (pid_to_ptid (currthread))) |
0f71a2f6 | 999 | { |
39f77062 | 1000 | add_thread (pid_to_ptid (currthread)); |
8b93c638 | 1001 | ui_out_text (uiout, "[New "); |
39f77062 | 1002 | ui_out_text (uiout, target_pid_to_str (pid_to_ptid (currthread))); |
8b93c638 | 1003 | ui_out_text (uiout, "]\n"); |
0f71a2f6 | 1004 | } |
c906108c SS |
1005 | } |
1006 | ||
1007 | #define MAGIC_NULL_PID 42000 | |
1008 | ||
1009 | static void | |
fba45db2 | 1010 | set_thread (int th, int gen) |
c906108c | 1011 | { |
d01949b6 | 1012 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 1013 | char *buf = rs->buf; |
cce74817 | 1014 | int state = gen ? general_thread : continue_thread; |
c906108c SS |
1015 | |
1016 | if (state == th) | |
1017 | return; | |
1018 | ||
1019 | buf[0] = 'H'; | |
1020 | buf[1] = gen ? 'g' : 'c'; | |
1021 | if (th == MAGIC_NULL_PID) | |
1022 | { | |
1023 | buf[2] = '0'; | |
1024 | buf[3] = '\0'; | |
1025 | } | |
1026 | else if (th < 0) | |
ea9c271d | 1027 | xsnprintf (&buf[2], get_remote_packet_size () - 2, "-%x", -th); |
c906108c | 1028 | else |
ea9c271d | 1029 | xsnprintf (&buf[2], get_remote_packet_size () - 2, "%x", th); |
c906108c | 1030 | putpkt (buf); |
6d820c5c | 1031 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 1032 | if (gen) |
c5aa993b | 1033 | general_thread = th; |
c906108c | 1034 | else |
cce74817 | 1035 | continue_thread = th; |
c906108c SS |
1036 | } |
1037 | \f | |
1038 | /* Return nonzero if the thread TH is still alive on the remote system. */ | |
1039 | ||
1040 | static int | |
39f77062 | 1041 | remote_thread_alive (ptid_t ptid) |
c906108c | 1042 | { |
6d820c5c | 1043 | struct remote_state *rs = get_remote_state (); |
39f77062 | 1044 | int tid = PIDGET (ptid); |
c906108c | 1045 | |
cce74817 | 1046 | if (tid < 0) |
2e9f7625 | 1047 | xsnprintf (rs->buf, get_remote_packet_size (), "T-%08x", -tid); |
c906108c | 1048 | else |
2e9f7625 DJ |
1049 | xsnprintf (rs->buf, get_remote_packet_size (), "T%08x", tid); |
1050 | putpkt (rs->buf); | |
6d820c5c | 1051 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1052 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
1053 | } |
1054 | ||
1055 | /* About these extended threadlist and threadinfo packets. They are | |
1056 | variable length packets but, the fields within them are often fixed | |
1057 | length. They are redundent enough to send over UDP as is the | |
1058 | remote protocol in general. There is a matching unit test module | |
1059 | in libstub. */ | |
1060 | ||
cce74817 JM |
1061 | #define OPAQUETHREADBYTES 8 |
1062 | ||
1063 | /* a 64 bit opaque identifier */ | |
1064 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
1065 | ||
23860348 MS |
1066 | /* WARNING: This threadref data structure comes from the remote O.S., |
1067 | libstub protocol encoding, and remote.c. it is not particularly | |
1068 | changable. */ | |
cce74817 JM |
1069 | |
1070 | /* Right now, the internal structure is int. We want it to be bigger. | |
1071 | Plan to fix this. | |
c5aa993b | 1072 | */ |
cce74817 | 1073 | |
23860348 | 1074 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 1075 | |
9d1f7ab2 | 1076 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 1077 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
1078 | |
1079 | struct gdb_ext_thread_info | |
c5aa993b | 1080 | { |
23860348 | 1081 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 1082 | int active; /* Has state interesting to GDB? |
23860348 | 1083 | regs, stack. */ |
2bc416ba | 1084 | char display[256]; /* Brief state display, name, |
cedea757 | 1085 | blocked/suspended. */ |
23860348 | 1086 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 1087 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 1088 | whatever. */ |
c5aa993b | 1089 | }; |
cce74817 JM |
1090 | |
1091 | /* The volume of remote transfers can be limited by submitting | |
1092 | a mask containing bits specifying the desired information. | |
1093 | Use a union of these values as the 'selection' parameter to | |
1094 | get_thread_info. FIXME: Make these TAG names more thread specific. | |
c5aa993b | 1095 | */ |
cce74817 JM |
1096 | |
1097 | #define TAG_THREADID 1 | |
1098 | #define TAG_EXISTS 2 | |
1099 | #define TAG_DISPLAY 4 | |
1100 | #define TAG_THREADNAME 8 | |
c5aa993b | 1101 | #define TAG_MOREDISPLAY 16 |
cce74817 | 1102 | |
23860348 | 1103 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 1104 | |
b2dd6311 | 1105 | char *unpack_varlen_hex (char *buff, ULONGEST *result); |
cce74817 | 1106 | |
a14ed312 | 1107 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 1108 | |
a14ed312 | 1109 | static char *pack_nibble (char *buf, int nibble); |
cce74817 | 1110 | |
23860348 | 1111 | static char *pack_hex_byte (char *pkt, int /* unsigned char */ byte); |
cce74817 | 1112 | |
a14ed312 | 1113 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 1114 | |
a14ed312 | 1115 | static char *pack_int (char *buf, int value); |
cce74817 | 1116 | |
a14ed312 | 1117 | static char *unpack_int (char *buf, int *value); |
cce74817 | 1118 | |
a14ed312 | 1119 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 1120 | |
23860348 | 1121 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 1122 | |
23860348 | 1123 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 1124 | |
23860348 | 1125 | void int_to_threadref (threadref *id, int value); |
cce74817 | 1126 | |
23860348 | 1127 | static int threadref_to_int (threadref *ref); |
cce74817 | 1128 | |
23860348 | 1129 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 1130 | |
23860348 | 1131 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 1132 | |
2bc416ba | 1133 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 1134 | threadref *id); |
cce74817 | 1135 | |
a14ed312 | 1136 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 1137 | threadref *expectedref, |
a14ed312 KB |
1138 | struct gdb_ext_thread_info |
1139 | *info); | |
cce74817 JM |
1140 | |
1141 | ||
2bc416ba | 1142 | static int remote_get_threadinfo (threadref *threadid, |
23860348 | 1143 | int fieldset, /*TAG mask */ |
a14ed312 | 1144 | struct gdb_ext_thread_info *info); |
cce74817 | 1145 | |
a14ed312 KB |
1146 | static char *pack_threadlist_request (char *pkt, int startflag, |
1147 | int threadcount, | |
23860348 | 1148 | threadref *nextthread); |
cce74817 | 1149 | |
a14ed312 KB |
1150 | static int parse_threadlist_response (char *pkt, |
1151 | int result_limit, | |
23860348 | 1152 | threadref *original_echo, |
2bc416ba | 1153 | threadref *resultlist, |
23860348 | 1154 | int *doneflag); |
cce74817 | 1155 | |
a14ed312 | 1156 | static int remote_get_threadlist (int startflag, |
23860348 | 1157 | threadref *nextthread, |
a14ed312 KB |
1158 | int result_limit, |
1159 | int *done, | |
2bc416ba | 1160 | int *result_count, |
23860348 | 1161 | threadref *threadlist); |
cce74817 | 1162 | |
23860348 | 1163 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 1164 | |
a14ed312 KB |
1165 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
1166 | void *context, int looplimit); | |
cce74817 | 1167 | |
23860348 | 1168 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 1169 | |
23860348 | 1170 | /* Encode 64 bits in 16 chars of hex. */ |
c906108c SS |
1171 | |
1172 | static const char hexchars[] = "0123456789abcdef"; | |
1173 | ||
1174 | static int | |
fba45db2 | 1175 | ishex (int ch, int *val) |
c906108c SS |
1176 | { |
1177 | if ((ch >= 'a') && (ch <= 'f')) | |
1178 | { | |
1179 | *val = ch - 'a' + 10; | |
1180 | return 1; | |
1181 | } | |
1182 | if ((ch >= 'A') && (ch <= 'F')) | |
1183 | { | |
1184 | *val = ch - 'A' + 10; | |
1185 | return 1; | |
1186 | } | |
1187 | if ((ch >= '0') && (ch <= '9')) | |
1188 | { | |
1189 | *val = ch - '0'; | |
1190 | return 1; | |
1191 | } | |
1192 | return 0; | |
1193 | } | |
1194 | ||
1195 | static int | |
fba45db2 | 1196 | stubhex (int ch) |
c906108c SS |
1197 | { |
1198 | if (ch >= 'a' && ch <= 'f') | |
1199 | return ch - 'a' + 10; | |
1200 | if (ch >= '0' && ch <= '9') | |
1201 | return ch - '0'; | |
1202 | if (ch >= 'A' && ch <= 'F') | |
1203 | return ch - 'A' + 10; | |
1204 | return -1; | |
1205 | } | |
1206 | ||
1207 | static int | |
fba45db2 | 1208 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
1209 | { |
1210 | int nibble; | |
1211 | int retval = 0; | |
1212 | ||
1213 | while (fieldlength) | |
1214 | { | |
1215 | nibble = stubhex (*buff++); | |
1216 | retval |= nibble; | |
1217 | fieldlength--; | |
1218 | if (fieldlength) | |
1219 | retval = retval << 4; | |
1220 | } | |
1221 | return retval; | |
1222 | } | |
1223 | ||
1224 | char * | |
fba45db2 | 1225 | unpack_varlen_hex (char *buff, /* packet to parse */ |
b2dd6311 | 1226 | ULONGEST *result) |
c906108c SS |
1227 | { |
1228 | int nibble; | |
d49c44d5 | 1229 | ULONGEST retval = 0; |
c906108c SS |
1230 | |
1231 | while (ishex (*buff, &nibble)) | |
1232 | { | |
1233 | buff++; | |
1234 | retval = retval << 4; | |
1235 | retval |= nibble & 0x0f; | |
1236 | } | |
1237 | *result = retval; | |
1238 | return buff; | |
1239 | } | |
1240 | ||
1241 | static char * | |
fba45db2 | 1242 | unpack_nibble (char *buf, int *val) |
c906108c SS |
1243 | { |
1244 | ishex (*buf++, val); | |
1245 | return buf; | |
1246 | } | |
1247 | ||
1248 | static char * | |
fba45db2 | 1249 | pack_nibble (char *buf, int nibble) |
c906108c SS |
1250 | { |
1251 | *buf++ = hexchars[(nibble & 0x0f)]; | |
1252 | return buf; | |
1253 | } | |
1254 | ||
1255 | static char * | |
fba45db2 | 1256 | pack_hex_byte (char *pkt, int byte) |
c906108c SS |
1257 | { |
1258 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
1259 | *pkt++ = hexchars[(byte & 0xf)]; | |
1260 | return pkt; | |
1261 | } | |
1262 | ||
1263 | static char * | |
fba45db2 | 1264 | unpack_byte (char *buf, int *value) |
c906108c SS |
1265 | { |
1266 | *value = stub_unpack_int (buf, 2); | |
1267 | return buf + 2; | |
1268 | } | |
1269 | ||
1270 | static char * | |
fba45db2 | 1271 | pack_int (char *buf, int value) |
c906108c SS |
1272 | { |
1273 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
1274 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
1275 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
1276 | buf = pack_hex_byte (buf, (value & 0xff)); | |
1277 | return buf; | |
1278 | } | |
1279 | ||
1280 | static char * | |
fba45db2 | 1281 | unpack_int (char *buf, int *value) |
c906108c SS |
1282 | { |
1283 | *value = stub_unpack_int (buf, 8); | |
1284 | return buf + 8; | |
1285 | } | |
1286 | ||
23860348 | 1287 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 1288 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
1289 | |
1290 | static char * | |
fba45db2 | 1291 | pack_string (char *pkt, char *string) |
c906108c SS |
1292 | { |
1293 | char ch; | |
1294 | int len; | |
1295 | ||
1296 | len = strlen (string); | |
1297 | if (len > 200) | |
23860348 | 1298 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
1299 | pkt = pack_hex_byte (pkt, len); |
1300 | while (len-- > 0) | |
1301 | { | |
1302 | ch = *string++; | |
1303 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 1304 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
1305 | *pkt++ = ch; |
1306 | } | |
1307 | return pkt; | |
1308 | } | |
1309 | #endif /* 0 (unused) */ | |
1310 | ||
1311 | static char * | |
fba45db2 | 1312 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
1313 | { |
1314 | while (length--) | |
1315 | *dest++ = *src++; | |
1316 | *dest = '\0'; | |
1317 | return src; | |
1318 | } | |
1319 | ||
1320 | static char * | |
fba45db2 | 1321 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
1322 | { |
1323 | char *limit; | |
1324 | unsigned char *altid; | |
1325 | ||
1326 | altid = (unsigned char *) id; | |
1327 | limit = pkt + BUF_THREAD_ID_SIZE; | |
1328 | while (pkt < limit) | |
1329 | pkt = pack_hex_byte (pkt, *altid++); | |
1330 | return pkt; | |
1331 | } | |
1332 | ||
1333 | ||
1334 | static char * | |
fba45db2 | 1335 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
1336 | { |
1337 | char *altref; | |
1338 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
1339 | int x, y; | |
1340 | ||
1341 | altref = (char *) id; | |
1342 | ||
1343 | while (inbuf < limit) | |
1344 | { | |
1345 | x = stubhex (*inbuf++); | |
1346 | y = stubhex (*inbuf++); | |
1347 | *altref++ = (x << 4) | y; | |
1348 | } | |
1349 | return inbuf; | |
1350 | } | |
1351 | ||
1352 | /* Externally, threadrefs are 64 bits but internally, they are still | |
1353 | ints. This is due to a mismatch of specifications. We would like | |
1354 | to use 64bit thread references internally. This is an adapter | |
1355 | function. */ | |
1356 | ||
1357 | void | |
fba45db2 | 1358 | int_to_threadref (threadref *id, int value) |
c906108c SS |
1359 | { |
1360 | unsigned char *scan; | |
1361 | ||
1362 | scan = (unsigned char *) id; | |
1363 | { | |
1364 | int i = 4; | |
1365 | while (i--) | |
1366 | *scan++ = 0; | |
1367 | } | |
1368 | *scan++ = (value >> 24) & 0xff; | |
1369 | *scan++ = (value >> 16) & 0xff; | |
1370 | *scan++ = (value >> 8) & 0xff; | |
1371 | *scan++ = (value & 0xff); | |
1372 | } | |
1373 | ||
1374 | static int | |
fba45db2 | 1375 | threadref_to_int (threadref *ref) |
c906108c SS |
1376 | { |
1377 | int i, value = 0; | |
1378 | unsigned char *scan; | |
1379 | ||
cfd77fa1 | 1380 | scan = *ref; |
c906108c SS |
1381 | scan += 4; |
1382 | i = 4; | |
1383 | while (i-- > 0) | |
1384 | value = (value << 8) | ((*scan++) & 0xff); | |
1385 | return value; | |
1386 | } | |
1387 | ||
1388 | static void | |
fba45db2 | 1389 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
1390 | { |
1391 | int i; | |
1392 | unsigned char *csrc, *cdest; | |
1393 | ||
1394 | csrc = (unsigned char *) src; | |
1395 | cdest = (unsigned char *) dest; | |
1396 | i = 8; | |
1397 | while (i--) | |
1398 | *cdest++ = *csrc++; | |
1399 | } | |
1400 | ||
1401 | static int | |
fba45db2 | 1402 | threadmatch (threadref *dest, threadref *src) |
c906108c | 1403 | { |
23860348 | 1404 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
1405 | #if 0 |
1406 | unsigned char *srcp, *destp; | |
1407 | int i, result; | |
1408 | srcp = (char *) src; | |
1409 | destp = (char *) dest; | |
1410 | ||
1411 | result = 1; | |
1412 | while (i-- > 0) | |
1413 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
1414 | return result; | |
1415 | #endif | |
1416 | return 1; | |
1417 | } | |
1418 | ||
1419 | /* | |
c5aa993b JM |
1420 | threadid:1, # always request threadid |
1421 | context_exists:2, | |
1422 | display:4, | |
1423 | unique_name:8, | |
1424 | more_display:16 | |
1425 | */ | |
c906108c SS |
1426 | |
1427 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
1428 | ||
1429 | static char * | |
fba45db2 | 1430 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 1431 | { |
23860348 MS |
1432 | *pkt++ = 'q'; /* Info Query */ |
1433 | *pkt++ = 'P'; /* process or thread info */ | |
1434 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 1435 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 1436 | *pkt = '\0'; /* terminate */ |
c906108c SS |
1437 | return pkt; |
1438 | } | |
1439 | ||
23860348 | 1440 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 1441 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 1442 | add more fields as time goes by. */ |
c906108c | 1443 | |
23860348 | 1444 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 1445 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 1446 | fetch registers and its stack? */ |
c5aa993b | 1447 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 1448 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 1449 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 1450 | the process. */ |
c906108c SS |
1451 | |
1452 | static int | |
fba45db2 KB |
1453 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
1454 | struct gdb_ext_thread_info *info) | |
c906108c | 1455 | { |
d01949b6 | 1456 | struct remote_state *rs = get_remote_state (); |
c906108c | 1457 | int mask, length; |
cfd77fa1 | 1458 | int tag; |
c906108c | 1459 | threadref ref; |
6d820c5c | 1460 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
1461 | int retval = 1; |
1462 | ||
23860348 | 1463 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
1464 | info->active = 0; |
1465 | info->display[0] = '\0'; | |
1466 | info->shortname[0] = '\0'; | |
1467 | info->more_display[0] = '\0'; | |
1468 | ||
23860348 MS |
1469 | /* Assume the characters indicating the packet type have been |
1470 | stripped. */ | |
c906108c SS |
1471 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
1472 | pkt = unpack_threadid (pkt, &ref); | |
1473 | ||
1474 | if (mask == 0) | |
8a3fe4f8 | 1475 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 1476 | if (!threadmatch (&ref, expectedref)) |
23860348 | 1477 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 1478 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
1479 | return 0; |
1480 | } | |
1481 | copy_threadref (&info->threadid, &ref); | |
1482 | ||
23860348 | 1483 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 1484 | |
23860348 MS |
1485 | /* Packets are terminated with nulls. */ |
1486 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
1487 | { |
1488 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
1489 | pkt = unpack_byte (pkt, &length); /* length */ |
1490 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 1491 | { |
8a3fe4f8 | 1492 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
1493 | retval = 0; |
1494 | break; | |
1495 | } | |
1496 | if (tag == TAG_THREADID) | |
1497 | { | |
1498 | if (length != 16) | |
1499 | { | |
8a3fe4f8 | 1500 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
1501 | retval = 0; |
1502 | break; | |
1503 | } | |
1504 | pkt = unpack_threadid (pkt, &ref); | |
1505 | mask = mask & ~TAG_THREADID; | |
1506 | continue; | |
1507 | } | |
1508 | if (tag == TAG_EXISTS) | |
1509 | { | |
1510 | info->active = stub_unpack_int (pkt, length); | |
1511 | pkt += length; | |
1512 | mask = mask & ~(TAG_EXISTS); | |
1513 | if (length > 8) | |
1514 | { | |
8a3fe4f8 | 1515 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
1516 | retval = 0; |
1517 | break; | |
1518 | } | |
1519 | continue; | |
1520 | } | |
1521 | if (tag == TAG_THREADNAME) | |
1522 | { | |
1523 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
1524 | mask = mask & ~TAG_THREADNAME; | |
1525 | continue; | |
1526 | } | |
1527 | if (tag == TAG_DISPLAY) | |
1528 | { | |
1529 | pkt = unpack_string (pkt, &info->display[0], length); | |
1530 | mask = mask & ~TAG_DISPLAY; | |
1531 | continue; | |
1532 | } | |
1533 | if (tag == TAG_MOREDISPLAY) | |
1534 | { | |
1535 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
1536 | mask = mask & ~TAG_MOREDISPLAY; | |
1537 | continue; | |
1538 | } | |
8a3fe4f8 | 1539 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 1540 | break; /* Not a tag we know about. */ |
c906108c SS |
1541 | } |
1542 | return retval; | |
1543 | } | |
1544 | ||
1545 | static int | |
fba45db2 KB |
1546 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
1547 | struct gdb_ext_thread_info *info) | |
c906108c | 1548 | { |
d01949b6 | 1549 | struct remote_state *rs = get_remote_state (); |
c906108c | 1550 | int result; |
c906108c | 1551 | |
2e9f7625 DJ |
1552 | pack_threadinfo_request (rs->buf, fieldset, threadid); |
1553 | putpkt (rs->buf); | |
6d820c5c | 1554 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1555 | result = remote_unpack_thread_info_response (rs->buf + 2, |
23860348 | 1556 | threadid, info); |
c906108c SS |
1557 | return result; |
1558 | } | |
1559 | ||
c906108c SS |
1560 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
1561 | ||
1562 | static char * | |
fba45db2 KB |
1563 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
1564 | threadref *nextthread) | |
c906108c SS |
1565 | { |
1566 | *pkt++ = 'q'; /* info query packet */ | |
1567 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 1568 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
1569 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
1570 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
1571 | *pkt = '\0'; | |
1572 | return pkt; | |
1573 | } | |
1574 | ||
1575 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
1576 | ||
1577 | static int | |
fba45db2 KB |
1578 | parse_threadlist_response (char *pkt, int result_limit, |
1579 | threadref *original_echo, threadref *resultlist, | |
1580 | int *doneflag) | |
c906108c | 1581 | { |
d01949b6 | 1582 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1583 | char *limit; |
1584 | int count, resultcount, done; | |
1585 | ||
1586 | resultcount = 0; | |
1587 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 1588 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 1589 | /* done parse past here */ |
c906108c SS |
1590 | pkt = unpack_byte (pkt, &count); /* count field */ |
1591 | pkt = unpack_nibble (pkt, &done); | |
1592 | /* The first threadid is the argument threadid. */ | |
1593 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
1594 | while ((count-- > 0) && (pkt < limit)) | |
1595 | { | |
1596 | pkt = unpack_threadid (pkt, resultlist++); | |
1597 | if (resultcount++ >= result_limit) | |
1598 | break; | |
1599 | } | |
1600 | if (doneflag) | |
1601 | *doneflag = done; | |
1602 | return resultcount; | |
1603 | } | |
1604 | ||
1605 | static int | |
fba45db2 KB |
1606 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
1607 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 1608 | { |
d01949b6 | 1609 | struct remote_state *rs = get_remote_state (); |
c906108c | 1610 | static threadref echo_nextthread; |
c906108c SS |
1611 | int result = 1; |
1612 | ||
23860348 | 1613 | /* Trancate result limit to be smaller than the packet size. */ |
ea9c271d DJ |
1614 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) >= get_remote_packet_size ()) |
1615 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; | |
c906108c | 1616 | |
6d820c5c DJ |
1617 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
1618 | putpkt (rs->buf); | |
1619 | getpkt (&rs->buf, &rs->buf_size, 0); | |
c906108c SS |
1620 | |
1621 | *result_count = | |
6d820c5c | 1622 | parse_threadlist_response (rs->buf + 2, result_limit, &echo_nextthread, |
c906108c SS |
1623 | threadlist, done); |
1624 | ||
1625 | if (!threadmatch (&echo_nextthread, nextthread)) | |
1626 | { | |
23860348 MS |
1627 | /* FIXME: This is a good reason to drop the packet. */ |
1628 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
1629 | /* Possabilities : |
1630 | retransmit immediatly - race conditions | |
1631 | retransmit after timeout - yes | |
1632 | exit | |
1633 | wait for packet, then exit | |
1634 | */ | |
8a3fe4f8 | 1635 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 1636 | return 0; /* I choose simply exiting. */ |
c906108c SS |
1637 | } |
1638 | if (*result_count <= 0) | |
1639 | { | |
1640 | if (*done != 1) | |
1641 | { | |
8a3fe4f8 | 1642 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
1643 | result = 0; |
1644 | } | |
1645 | return result; /* break; */ | |
1646 | } | |
1647 | if (*result_count > result_limit) | |
1648 | { | |
1649 | *result_count = 0; | |
8a3fe4f8 | 1650 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
1651 | return 0; |
1652 | } | |
1653 | return result; | |
1654 | } | |
1655 | ||
23860348 MS |
1656 | /* This is the interface between remote and threads, remotes upper |
1657 | interface. */ | |
c906108c SS |
1658 | |
1659 | /* remote_find_new_threads retrieves the thread list and for each | |
1660 | thread in the list, looks up the thread in GDB's internal list, | |
1661 | ading the thread if it does not already exist. This involves | |
1662 | getting partial thread lists from the remote target so, polling the | |
1663 | quit_flag is required. */ | |
1664 | ||
1665 | ||
23860348 | 1666 | /* About this many threadisds fit in a packet. */ |
c906108c SS |
1667 | |
1668 | #define MAXTHREADLISTRESULTS 32 | |
1669 | ||
1670 | static int | |
fba45db2 KB |
1671 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
1672 | int looplimit) | |
c906108c SS |
1673 | { |
1674 | int done, i, result_count; | |
1675 | int startflag = 1; | |
1676 | int result = 1; | |
1677 | int loopcount = 0; | |
1678 | static threadref nextthread; | |
1679 | static threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
1680 | ||
1681 | done = 0; | |
1682 | while (!done) | |
1683 | { | |
1684 | if (loopcount++ > looplimit) | |
1685 | { | |
1686 | result = 0; | |
8a3fe4f8 | 1687 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
1688 | break; |
1689 | } | |
1690 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS, | |
1691 | &done, &result_count, resultthreadlist)) | |
1692 | { | |
1693 | result = 0; | |
1694 | break; | |
1695 | } | |
23860348 | 1696 | /* Clear for later iterations. */ |
c906108c SS |
1697 | startflag = 0; |
1698 | /* Setup to resume next batch of thread references, set nextthread. */ | |
1699 | if (result_count >= 1) | |
1700 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |
1701 | i = 0; | |
1702 | while (result_count--) | |
1703 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |
1704 | break; | |
1705 | } | |
1706 | return result; | |
1707 | } | |
1708 | ||
1709 | static int | |
fba45db2 | 1710 | remote_newthread_step (threadref *ref, void *context) |
c906108c | 1711 | { |
39f77062 | 1712 | ptid_t ptid; |
c906108c | 1713 | |
39f77062 KB |
1714 | ptid = pid_to_ptid (threadref_to_int (ref)); |
1715 | ||
1716 | if (!in_thread_list (ptid)) | |
1717 | add_thread (ptid); | |
c906108c SS |
1718 | return 1; /* continue iterator */ |
1719 | } | |
1720 | ||
1721 | #define CRAZY_MAX_THREADS 1000 | |
1722 | ||
39f77062 KB |
1723 | static ptid_t |
1724 | remote_current_thread (ptid_t oldpid) | |
c906108c | 1725 | { |
d01949b6 | 1726 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1727 | |
1728 | putpkt ("qC"); | |
6d820c5c | 1729 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1730 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
c273b20f JB |
1731 | /* Use strtoul here, so we'll correctly parse values whose highest |
1732 | bit is set. The protocol carries them as a simple series of | |
1733 | hex digits; in the absence of a sign, strtol will see such | |
1734 | values as positive numbers out of range for signed 'long', and | |
1735 | return LONG_MAX to indicate an overflow. */ | |
2e9f7625 | 1736 | return pid_to_ptid (strtoul (&rs->buf[2], NULL, 16)); |
c906108c SS |
1737 | else |
1738 | return oldpid; | |
1739 | } | |
1740 | ||
802188a7 RM |
1741 | /* Find new threads for info threads command. |
1742 | * Original version, using John Metzler's thread protocol. | |
9d1f7ab2 | 1743 | */ |
cce74817 JM |
1744 | |
1745 | static void | |
fba45db2 | 1746 | remote_find_new_threads (void) |
c906108c | 1747 | { |
c5aa993b JM |
1748 | remote_threadlist_iterator (remote_newthread_step, 0, |
1749 | CRAZY_MAX_THREADS); | |
39f77062 KB |
1750 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) /* ack ack ack */ |
1751 | inferior_ptid = remote_current_thread (inferior_ptid); | |
c906108c SS |
1752 | } |
1753 | ||
9d1f7ab2 MS |
1754 | /* |
1755 | * Find all threads for info threads command. | |
1756 | * Uses new thread protocol contributed by Cisco. | |
1757 | * Falls back and attempts to use the older method (above) | |
1758 | * if the target doesn't respond to the new method. | |
1759 | */ | |
1760 | ||
0f71a2f6 JM |
1761 | static void |
1762 | remote_threads_info (void) | |
1763 | { | |
d01949b6 | 1764 | struct remote_state *rs = get_remote_state (); |
085dd6e6 | 1765 | char *bufp; |
0f71a2f6 JM |
1766 | int tid; |
1767 | ||
1768 | if (remote_desc == 0) /* paranoia */ | |
8a3fe4f8 | 1769 | error (_("Command can only be used when connected to the remote target.")); |
0f71a2f6 | 1770 | |
9d1f7ab2 MS |
1771 | if (use_threadinfo_query) |
1772 | { | |
1773 | putpkt ("qfThreadInfo"); | |
6d820c5c | 1774 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1775 | bufp = rs->buf; |
9d1f7ab2 | 1776 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 1777 | { |
9d1f7ab2 MS |
1778 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
1779 | { | |
1780 | do | |
1781 | { | |
c273b20f JB |
1782 | /* Use strtoul here, so we'll correctly parse values |
1783 | whose highest bit is set. The protocol carries | |
1784 | them as a simple series of hex digits; in the | |
1785 | absence of a sign, strtol will see such values as | |
1786 | positive numbers out of range for signed 'long', | |
1787 | and return LONG_MAX to indicate an overflow. */ | |
1788 | tid = strtoul (bufp, &bufp, 16); | |
39f77062 KB |
1789 | if (tid != 0 && !in_thread_list (pid_to_ptid (tid))) |
1790 | add_thread (pid_to_ptid (tid)); | |
9d1f7ab2 MS |
1791 | } |
1792 | while (*bufp++ == ','); /* comma-separated list */ | |
1793 | putpkt ("qsThreadInfo"); | |
6d820c5c | 1794 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1795 | bufp = rs->buf; |
9d1f7ab2 MS |
1796 | } |
1797 | return; /* done */ | |
1798 | } | |
1799 | } | |
1800 | ||
23860348 | 1801 | /* Else fall back to old method based on jmetzler protocol. */ |
9d1f7ab2 MS |
1802 | use_threadinfo_query = 0; |
1803 | remote_find_new_threads (); | |
1804 | return; | |
1805 | } | |
1806 | ||
802188a7 | 1807 | /* |
9d1f7ab2 MS |
1808 | * Collect a descriptive string about the given thread. |
1809 | * The target may say anything it wants to about the thread | |
1810 | * (typically info about its blocked / runnable state, name, etc.). | |
1811 | * This string will appear in the info threads display. | |
802188a7 | 1812 | * |
9d1f7ab2 MS |
1813 | * Optional: targets are not required to implement this function. |
1814 | */ | |
1815 | ||
1816 | static char * | |
1817 | remote_threads_extra_info (struct thread_info *tp) | |
1818 | { | |
d01949b6 | 1819 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
1820 | int result; |
1821 | int set; | |
1822 | threadref id; | |
1823 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 1824 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
1825 | int n = 0; /* position in display_buf */ |
1826 | ||
1827 | if (remote_desc == 0) /* paranoia */ | |
8e65ff28 | 1828 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 1829 | _("remote_threads_extra_info")); |
9d1f7ab2 MS |
1830 | |
1831 | if (use_threadextra_query) | |
1832 | { | |
2e9f7625 | 1833 | xsnprintf (rs->buf, get_remote_packet_size (), "qThreadExtraInfo,%x", |
ecbc58df | 1834 | PIDGET (tp->ptid)); |
2e9f7625 | 1835 | putpkt (rs->buf); |
6d820c5c | 1836 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1837 | if (rs->buf[0] != 0) |
9d1f7ab2 | 1838 | { |
2e9f7625 DJ |
1839 | n = min (strlen (rs->buf) / 2, sizeof (display_buf)); |
1840 | result = hex2bin (rs->buf, (gdb_byte *) display_buf, n); | |
30559e10 | 1841 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
1842 | return display_buf; |
1843 | } | |
0f71a2f6 | 1844 | } |
9d1f7ab2 MS |
1845 | |
1846 | /* If the above query fails, fall back to the old method. */ | |
1847 | use_threadextra_query = 0; | |
1848 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
1849 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
39f77062 | 1850 | int_to_threadref (&id, PIDGET (tp->ptid)); |
9d1f7ab2 MS |
1851 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
1852 | if (threadinfo.active) | |
0f71a2f6 | 1853 | { |
9d1f7ab2 | 1854 | if (*threadinfo.shortname) |
2bc416ba | 1855 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
ecbc58df | 1856 | " Name: %s,", threadinfo.shortname); |
9d1f7ab2 | 1857 | if (*threadinfo.display) |
2bc416ba | 1858 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 1859 | " State: %s,", threadinfo.display); |
9d1f7ab2 | 1860 | if (*threadinfo.more_display) |
2bc416ba | 1861 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
ecbc58df | 1862 | " Priority: %s", threadinfo.more_display); |
9d1f7ab2 MS |
1863 | |
1864 | if (n > 0) | |
c5aa993b | 1865 | { |
23860348 | 1866 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
1867 | if (',' == display_buf[n-1]) |
1868 | display_buf[n-1] = ' '; | |
1869 | return display_buf; | |
c5aa993b | 1870 | } |
0f71a2f6 | 1871 | } |
9d1f7ab2 | 1872 | return NULL; |
0f71a2f6 | 1873 | } |
c906108c | 1874 | \f |
c5aa993b | 1875 | |
24b06219 | 1876 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
1877 | |
1878 | static void | |
fba45db2 | 1879 | extended_remote_restart (void) |
c906108c | 1880 | { |
d01949b6 | 1881 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1882 | |
1883 | /* Send the restart command; for reasons I don't understand the | |
1884 | remote side really expects a number after the "R". */ | |
ea9c271d | 1885 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); |
6d820c5c | 1886 | putpkt (rs->buf); |
c906108c | 1887 | |
ad9a8f3f | 1888 | remote_fileio_reset (); |
2bc416ba | 1889 | |
c906108c SS |
1890 | /* Now query for status so this looks just like we restarted |
1891 | gdbserver from scratch. */ | |
1892 | putpkt ("?"); | |
01d3a6ce | 1893 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c SS |
1894 | } |
1895 | \f | |
1896 | /* Clean up connection to a remote debugger. */ | |
1897 | ||
c906108c | 1898 | static void |
fba45db2 | 1899 | remote_close (int quitting) |
c906108c SS |
1900 | { |
1901 | if (remote_desc) | |
2cd58942 | 1902 | serial_close (remote_desc); |
c906108c SS |
1903 | remote_desc = NULL; |
1904 | } | |
1905 | ||
23860348 | 1906 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
1907 | |
1908 | static void | |
fba45db2 | 1909 | get_offsets (void) |
c906108c | 1910 | { |
d01949b6 | 1911 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 1912 | char *buf; |
085dd6e6 | 1913 | char *ptr; |
c906108c SS |
1914 | int lose; |
1915 | CORE_ADDR text_addr, data_addr, bss_addr; | |
1916 | struct section_offsets *offs; | |
1917 | ||
1918 | putpkt ("qOffsets"); | |
6d820c5c | 1919 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 1920 | buf = rs->buf; |
c906108c SS |
1921 | |
1922 | if (buf[0] == '\000') | |
1923 | return; /* Return silently. Stub doesn't support | |
23860348 | 1924 | this command. */ |
c906108c SS |
1925 | if (buf[0] == 'E') |
1926 | { | |
8a3fe4f8 | 1927 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
1928 | return; |
1929 | } | |
1930 | ||
1931 | /* Pick up each field in turn. This used to be done with scanf, but | |
1932 | scanf will make trouble if CORE_ADDR size doesn't match | |
1933 | conversion directives correctly. The following code will work | |
1934 | with any size of CORE_ADDR. */ | |
1935 | text_addr = data_addr = bss_addr = 0; | |
1936 | ptr = buf; | |
1937 | lose = 0; | |
1938 | ||
1939 | if (strncmp (ptr, "Text=", 5) == 0) | |
1940 | { | |
1941 | ptr += 5; | |
1942 | /* Don't use strtol, could lose on big values. */ | |
1943 | while (*ptr && *ptr != ';') | |
1944 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
1945 | } | |
1946 | else | |
1947 | lose = 1; | |
1948 | ||
1949 | if (!lose && strncmp (ptr, ";Data=", 6) == 0) | |
1950 | { | |
1951 | ptr += 6; | |
1952 | while (*ptr && *ptr != ';') | |
1953 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
1954 | } | |
1955 | else | |
1956 | lose = 1; | |
1957 | ||
1958 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
1959 | { | |
1960 | ptr += 5; | |
1961 | while (*ptr && *ptr != ';') | |
1962 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
1963 | } | |
1964 | else | |
1965 | lose = 1; | |
1966 | ||
1967 | if (lose) | |
8a3fe4f8 | 1968 | error (_("Malformed response to offset query, %s"), buf); |
c906108c SS |
1969 | |
1970 | if (symfile_objfile == NULL) | |
1971 | return; | |
1972 | ||
802188a7 | 1973 | offs = ((struct section_offsets *) |
a39a16c4 | 1974 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 1975 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 1976 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 1977 | |
a4c8257b | 1978 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; |
c906108c SS |
1979 | |
1980 | /* This is a temporary kludge to force data and bss to use the same offsets | |
1981 | because that's what nlmconv does now. The real solution requires changes | |
1982 | to the stub and remote.c that I don't have time to do right now. */ | |
1983 | ||
a4c8257b EZ |
1984 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; |
1985 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
c906108c SS |
1986 | |
1987 | objfile_relocate (symfile_objfile, offs); | |
1988 | } | |
1989 | ||
1990 | /* Stub for catch_errors. */ | |
1991 | ||
0f71a2f6 | 1992 | static int |
36918e70 | 1993 | remote_start_remote_dummy (struct ui_out *uiout, void *dummy) |
0f71a2f6 | 1994 | { |
23860348 | 1995 | start_remote (); /* Initialize gdb process mechanisms. */ |
36918e70 AC |
1996 | /* NOTE: Return something >=0. A -ve value is reserved for |
1997 | catch_exceptions. */ | |
0f71a2f6 JM |
1998 | return 1; |
1999 | } | |
2000 | ||
9cbc821d | 2001 | static void |
36918e70 | 2002 | remote_start_remote (struct ui_out *uiout, void *dummy) |
c906108c | 2003 | { |
23860348 | 2004 | immediate_quit++; /* Allow user to interrupt it. */ |
c906108c SS |
2005 | |
2006 | /* Ack any packet which the remote side has already sent. */ | |
2cd58942 | 2007 | serial_write (remote_desc, "+", 1); |
c906108c SS |
2008 | |
2009 | /* Let the stub know that we want it to return the thread. */ | |
2010 | set_thread (-1, 0); | |
2011 | ||
39f77062 | 2012 | inferior_ptid = remote_current_thread (inferior_ptid); |
c906108c | 2013 | |
23860348 | 2014 | get_offsets (); /* Get text, data & bss offsets. */ |
c906108c | 2015 | |
23860348 | 2016 | putpkt ("?"); /* Initiate a query from remote machine. */ |
8edbea78 | 2017 | immediate_quit--; |
c906108c | 2018 | |
9cbc821d | 2019 | remote_start_remote_dummy (uiout, dummy); |
c906108c SS |
2020 | } |
2021 | ||
2022 | /* Open a connection to a remote debugger. | |
2023 | NAME is the filename used for communication. */ | |
2024 | ||
2025 | static void | |
fba45db2 | 2026 | remote_open (char *name, int from_tty) |
c906108c | 2027 | { |
92d1e331 | 2028 | remote_open_1 (name, from_tty, &remote_ops, 0, 0); |
c906108c SS |
2029 | } |
2030 | ||
23860348 | 2031 | /* Just like remote_open, but with asynchronous support. */ |
43ff13b4 | 2032 | static void |
fba45db2 | 2033 | remote_async_open (char *name, int from_tty) |
43ff13b4 | 2034 | { |
92d1e331 | 2035 | remote_open_1 (name, from_tty, &remote_async_ops, 0, 1); |
43ff13b4 JM |
2036 | } |
2037 | ||
c906108c SS |
2038 | /* Open a connection to a remote debugger using the extended |
2039 | remote gdb protocol. NAME is the filename used for communication. */ | |
2040 | ||
2041 | static void | |
fba45db2 | 2042 | extended_remote_open (char *name, int from_tty) |
c906108c | 2043 | { |
92d1e331 DJ |
2044 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */, |
2045 | 0 /* async_p */); | |
c906108c SS |
2046 | } |
2047 | ||
23860348 | 2048 | /* Just like extended_remote_open, but with asynchronous support. */ |
43ff13b4 | 2049 | static void |
fba45db2 | 2050 | extended_remote_async_open (char *name, int from_tty) |
43ff13b4 | 2051 | { |
92d1e331 DJ |
2052 | remote_open_1 (name, from_tty, &extended_async_remote_ops, |
2053 | 1 /*extended_p */, 1 /* async_p */); | |
43ff13b4 JM |
2054 | } |
2055 | ||
c906108c SS |
2056 | /* Generic code for opening a connection to a remote target. */ |
2057 | ||
d471ea57 AC |
2058 | static void |
2059 | init_all_packet_configs (void) | |
2060 | { | |
2061 | int i; | |
444abaca DJ |
2062 | for (i = 0; i < PACKET_MAX; i++) |
2063 | update_packet_config (&remote_protocol_packets[i]); | |
d471ea57 AC |
2064 | } |
2065 | ||
23860348 | 2066 | /* Symbol look-up. */ |
dc8acb97 MS |
2067 | |
2068 | static void | |
2069 | remote_check_symbols (struct objfile *objfile) | |
2070 | { | |
d01949b6 | 2071 | struct remote_state *rs = get_remote_state (); |
dc8acb97 MS |
2072 | char *msg, *reply, *tmp; |
2073 | struct minimal_symbol *sym; | |
2074 | int end; | |
2075 | ||
444abaca | 2076 | if (remote_protocol_packets[PACKET_qSymbol].support == PACKET_DISABLE) |
dc8acb97 MS |
2077 | return; |
2078 | ||
6d820c5c DJ |
2079 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
2080 | because we need both at the same time. */ | |
ea9c271d | 2081 | msg = alloca (get_remote_packet_size ()); |
6d820c5c | 2082 | |
23860348 | 2083 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
2084 | |
2085 | putpkt ("qSymbol::"); | |
6d820c5c DJ |
2086 | getpkt (&rs->buf, &rs->buf_size, 0); |
2087 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSymbol]); | |
2e9f7625 | 2088 | reply = rs->buf; |
dc8acb97 MS |
2089 | |
2090 | while (strncmp (reply, "qSymbol:", 8) == 0) | |
2091 | { | |
2092 | tmp = &reply[8]; | |
cfd77fa1 | 2093 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
2094 | msg[end] = '\0'; |
2095 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
2096 | if (sym == NULL) | |
ea9c271d | 2097 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
dc8acb97 | 2098 | else |
ea9c271d | 2099 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", |
ecbc58df WZ |
2100 | paddr_nz (SYMBOL_VALUE_ADDRESS (sym)), |
2101 | &reply[8]); | |
dc8acb97 | 2102 | putpkt (msg); |
6d820c5c | 2103 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2104 | reply = rs->buf; |
dc8acb97 MS |
2105 | } |
2106 | } | |
2107 | ||
9db8d71f DJ |
2108 | static struct serial * |
2109 | remote_serial_open (char *name) | |
2110 | { | |
2111 | static int udp_warning = 0; | |
2112 | ||
2113 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
2114 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
2115 | serial connection is reliable and not the serial connection promising | |
2116 | to be. */ | |
2117 | if (!udp_warning && strncmp (name, "udp:", 4) == 0) | |
2118 | { | |
8a3fe4f8 AC |
2119 | warning (_("\ |
2120 | The remote protocol may be unreliable over UDP.\n\ | |
2121 | Some events may be lost, rendering further debugging impossible.")); | |
9db8d71f DJ |
2122 | udp_warning = 1; |
2123 | } | |
2124 | ||
2125 | return serial_open (name); | |
2126 | } | |
2127 | ||
be2a5f71 DJ |
2128 | /* This type describes each known response to the qSupported |
2129 | packet. */ | |
2130 | struct protocol_feature | |
2131 | { | |
2132 | /* The name of this protocol feature. */ | |
2133 | const char *name; | |
2134 | ||
2135 | /* The default for this protocol feature. */ | |
2136 | enum packet_support default_support; | |
2137 | ||
2138 | /* The function to call when this feature is reported, or after | |
2139 | qSupported processing if the feature is not supported. | |
2140 | The first argument points to this structure. The second | |
2141 | argument indicates whether the packet requested support be | |
2142 | enabled, disabled, or probed (or the default, if this function | |
2143 | is being called at the end of processing and this feature was | |
2144 | not reported). The third argument may be NULL; if not NULL, it | |
2145 | is a NUL-terminated string taken from the packet following | |
2146 | this feature's name and an equals sign. */ | |
2147 | void (*func) (const struct protocol_feature *, enum packet_support, | |
2148 | const char *); | |
2149 | ||
2150 | /* The corresponding packet for this feature. Only used if | |
2151 | FUNC is remote_supported_packet. */ | |
2152 | int packet; | |
2153 | }; | |
2154 | ||
be2a5f71 DJ |
2155 | static void |
2156 | remote_supported_packet (const struct protocol_feature *feature, | |
2157 | enum packet_support support, | |
2158 | const char *argument) | |
2159 | { | |
2160 | if (argument) | |
2161 | { | |
2162 | warning (_("Remote qSupported response supplied an unexpected value for" | |
2163 | " \"%s\"."), feature->name); | |
2164 | return; | |
2165 | } | |
2166 | ||
2167 | if (remote_protocol_packets[feature->packet].support | |
2168 | == PACKET_SUPPORT_UNKNOWN) | |
2169 | remote_protocol_packets[feature->packet].support = support; | |
2170 | } | |
be2a5f71 DJ |
2171 | |
2172 | static void | |
2173 | remote_packet_size (const struct protocol_feature *feature, | |
2174 | enum packet_support support, const char *value) | |
2175 | { | |
2176 | struct remote_state *rs = get_remote_state (); | |
2177 | ||
2178 | int packet_size; | |
2179 | char *value_end; | |
2180 | ||
2181 | if (support != PACKET_ENABLE) | |
2182 | return; | |
2183 | ||
2184 | if (value == NULL || *value == '\0') | |
2185 | { | |
2186 | warning (_("Remote target reported \"%s\" without a size."), | |
2187 | feature->name); | |
2188 | return; | |
2189 | } | |
2190 | ||
2191 | errno = 0; | |
2192 | packet_size = strtol (value, &value_end, 16); | |
2193 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
2194 | { | |
2195 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
2196 | feature->name, value); | |
2197 | return; | |
2198 | } | |
2199 | ||
2200 | if (packet_size > MAX_REMOTE_PACKET_SIZE) | |
2201 | { | |
2202 | warning (_("limiting remote suggested packet size (%d bytes) to %d"), | |
2203 | packet_size, MAX_REMOTE_PACKET_SIZE); | |
2204 | packet_size = MAX_REMOTE_PACKET_SIZE; | |
2205 | } | |
2206 | ||
2207 | /* Record the new maximum packet size. */ | |
2208 | rs->explicit_packet_size = packet_size; | |
2209 | } | |
2210 | ||
2211 | static struct protocol_feature remote_protocol_features[] = { | |
0876f84a | 2212 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 2213 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee DJ |
2214 | PACKET_qXfer_auxv }, |
2215 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, | |
2216 | PACKET_qXfer_memory_map } | |
be2a5f71 DJ |
2217 | }; |
2218 | ||
2219 | static void | |
2220 | remote_query_supported (void) | |
2221 | { | |
2222 | struct remote_state *rs = get_remote_state (); | |
2223 | char *next; | |
2224 | int i; | |
2225 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
2226 | ||
2227 | /* The packet support flags are handled differently for this packet | |
2228 | than for most others. We treat an error, a disabled packet, and | |
2229 | an empty response identically: any features which must be reported | |
2230 | to be used will be automatically disabled. An empty buffer | |
2231 | accomplishes this, since that is also the representation for a list | |
2232 | containing no features. */ | |
2233 | ||
2234 | rs->buf[0] = 0; | |
2235 | if (remote_protocol_packets[PACKET_qSupported].support != PACKET_DISABLE) | |
2236 | { | |
2237 | putpkt ("qSupported"); | |
2238 | getpkt (&rs->buf, &rs->buf_size, 0); | |
2239 | ||
2240 | /* If an error occured, warn, but do not return - just reset the | |
2241 | buffer to empty and go on to disable features. */ | |
2242 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
2243 | == PACKET_ERROR) | |
2244 | { | |
2245 | warning (_("Remote failure reply: %s"), rs->buf); | |
2246 | rs->buf[0] = 0; | |
2247 | } | |
2248 | } | |
2249 | ||
2250 | memset (seen, 0, sizeof (seen)); | |
2251 | ||
2252 | next = rs->buf; | |
2253 | while (*next) | |
2254 | { | |
2255 | enum packet_support is_supported; | |
2256 | char *p, *end, *name_end, *value; | |
2257 | ||
2258 | /* First separate out this item from the rest of the packet. If | |
2259 | there's another item after this, we overwrite the separator | |
2260 | (terminated strings are much easier to work with). */ | |
2261 | p = next; | |
2262 | end = strchr (p, ';'); | |
2263 | if (end == NULL) | |
2264 | { | |
2265 | end = p + strlen (p); | |
2266 | next = end; | |
2267 | } | |
2268 | else | |
2269 | { | |
2270 | if (end == p) | |
2271 | { | |
2272 | warning (_("empty item in \"qSupported\" response")); | |
2273 | continue; | |
2274 | } | |
2275 | ||
2276 | *end = '\0'; | |
2277 | next = end + 1; | |
2278 | } | |
2279 | ||
2280 | name_end = strchr (p, '='); | |
2281 | if (name_end) | |
2282 | { | |
2283 | /* This is a name=value entry. */ | |
2284 | is_supported = PACKET_ENABLE; | |
2285 | value = name_end + 1; | |
2286 | *name_end = '\0'; | |
2287 | } | |
2288 | else | |
2289 | { | |
2290 | value = NULL; | |
2291 | switch (end[-1]) | |
2292 | { | |
2293 | case '+': | |
2294 | is_supported = PACKET_ENABLE; | |
2295 | break; | |
2296 | ||
2297 | case '-': | |
2298 | is_supported = PACKET_DISABLE; | |
2299 | break; | |
2300 | ||
2301 | case '?': | |
2302 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
2303 | break; | |
2304 | ||
2305 | default: | |
2306 | warning (_("unrecognized item \"%s\" in \"qSupported\" response"), p); | |
2307 | continue; | |
2308 | } | |
2309 | end[-1] = '\0'; | |
2310 | } | |
2311 | ||
2312 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
2313 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
2314 | { | |
2315 | const struct protocol_feature *feature; | |
2316 | ||
2317 | seen[i] = 1; | |
2318 | feature = &remote_protocol_features[i]; | |
2319 | feature->func (feature, is_supported, value); | |
2320 | break; | |
2321 | } | |
2322 | } | |
2323 | ||
2324 | /* If we increased the packet size, make sure to increase the global | |
2325 | buffer size also. We delay this until after parsing the entire | |
2326 | qSupported packet, because this is the same buffer we were | |
2327 | parsing. */ | |
2328 | if (rs->buf_size < rs->explicit_packet_size) | |
2329 | { | |
2330 | rs->buf_size = rs->explicit_packet_size; | |
2331 | rs->buf = xrealloc (rs->buf, rs->buf_size); | |
2332 | } | |
2333 | ||
2334 | /* Handle the defaults for unmentioned features. */ | |
2335 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
2336 | if (!seen[i]) | |
2337 | { | |
2338 | const struct protocol_feature *feature; | |
2339 | ||
2340 | feature = &remote_protocol_features[i]; | |
2341 | feature->func (feature, feature->default_support, NULL); | |
2342 | } | |
2343 | } | |
2344 | ||
2345 | ||
c906108c | 2346 | static void |
fba45db2 | 2347 | remote_open_1 (char *name, int from_tty, struct target_ops *target, |
92d1e331 | 2348 | int extended_p, int async_p) |
c906108c | 2349 | { |
d01949b6 | 2350 | struct remote_state *rs = get_remote_state (); |
c906108c | 2351 | if (name == 0) |
8a3fe4f8 | 2352 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 2353 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 2354 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 2355 | |
23860348 | 2356 | /* See FIXME above. */ |
92d1e331 DJ |
2357 | if (!async_p) |
2358 | wait_forever_enabled_p = 1; | |
6426a772 | 2359 | |
c906108c SS |
2360 | target_preopen (from_tty); |
2361 | ||
2362 | unpush_target (target); | |
2363 | ||
ad9a8f3f | 2364 | remote_fileio_reset (); |
1dd41f16 NS |
2365 | reopen_exec_file (); |
2366 | reread_symbols (); | |
2367 | ||
9db8d71f | 2368 | remote_desc = remote_serial_open (name); |
c906108c SS |
2369 | if (!remote_desc) |
2370 | perror_with_name (name); | |
2371 | ||
2372 | if (baud_rate != -1) | |
2373 | { | |
2cd58942 | 2374 | if (serial_setbaudrate (remote_desc, baud_rate)) |
c906108c | 2375 | { |
9b74d5d3 KB |
2376 | /* The requested speed could not be set. Error out to |
2377 | top level after closing remote_desc. Take care to | |
2378 | set remote_desc to NULL to avoid closing remote_desc | |
2379 | more than once. */ | |
2cd58942 | 2380 | serial_close (remote_desc); |
9b74d5d3 | 2381 | remote_desc = NULL; |
c906108c SS |
2382 | perror_with_name (name); |
2383 | } | |
2384 | } | |
2385 | ||
2cd58942 | 2386 | serial_raw (remote_desc); |
c906108c SS |
2387 | |
2388 | /* If there is something sitting in the buffer we might take it as a | |
2389 | response to a command, which would be bad. */ | |
2cd58942 | 2390 | serial_flush_input (remote_desc); |
c906108c SS |
2391 | |
2392 | if (from_tty) | |
2393 | { | |
2394 | puts_filtered ("Remote debugging using "); | |
2395 | puts_filtered (name); | |
2396 | puts_filtered ("\n"); | |
2397 | } | |
23860348 | 2398 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 2399 | |
be2a5f71 DJ |
2400 | /* Reset the target state; these things will be queried either by |
2401 | remote_query_supported or as they are needed. */ | |
d471ea57 | 2402 | init_all_packet_configs (); |
be2a5f71 | 2403 | rs->explicit_packet_size = 0; |
802188a7 | 2404 | |
c5aa993b | 2405 | general_thread = -2; |
cce74817 | 2406 | continue_thread = -2; |
c906108c | 2407 | |
9d1f7ab2 MS |
2408 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
2409 | use_threadinfo_query = 1; | |
2410 | use_threadextra_query = 1; | |
2411 | ||
be2a5f71 DJ |
2412 | /* The first packet we send to the target is the optional "supported |
2413 | packets" request. If the target can answer this, it will tell us | |
2414 | which later probes to skip. */ | |
2415 | remote_query_supported (); | |
2416 | ||
c906108c SS |
2417 | /* Without this, some commands which require an active target (such |
2418 | as kill) won't work. This variable serves (at least) double duty | |
2419 | as both the pid of the target process (if it has such), and as a | |
2420 | flag indicating that a target is active. These functions should | |
2421 | be split out into seperate variables, especially since GDB will | |
2422 | someday have a notion of debugging several processes. */ | |
2423 | ||
39f77062 | 2424 | inferior_ptid = pid_to_ptid (MAGIC_NULL_PID); |
92d1e331 DJ |
2425 | |
2426 | if (async_p) | |
2427 | { | |
23860348 | 2428 | /* With this target we start out by owning the terminal. */ |
92d1e331 DJ |
2429 | remote_async_terminal_ours_p = 1; |
2430 | ||
2431 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
2432 | assumed that the target is already ready and able to respond to | |
2433 | requests. Unfortunately remote_start_remote() eventually calls | |
2434 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets | |
2435 | around this. Eventually a mechanism that allows | |
2436 | wait_for_inferior() to expect/get timeouts will be | |
23860348 | 2437 | implemented. */ |
92d1e331 DJ |
2438 | wait_forever_enabled_p = 0; |
2439 | } | |
2440 | ||
23860348 | 2441 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 2442 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 2443 | |
36918e70 | 2444 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
2445 | target (we'd otherwise be in an inconsistent state) and then |
2446 | propogate the error on up the exception chain. This ensures that | |
2447 | the caller doesn't stumble along blindly assuming that the | |
2448 | function succeeded. The CLI doesn't have this problem but other | |
2449 | UI's, such as MI do. | |
36918e70 AC |
2450 | |
2451 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
2452 | this function should return an error indication letting the | |
ce2826aa | 2453 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
2454 | ``target remote'' is directly wired to this function making that |
2455 | impossible. On a positive note, the CLI side of this problem has | |
2456 | been fixed - the function set_cmd_context() makes it possible for | |
2457 | all the ``target ....'' commands to share a common callback | |
2458 | function. See cli-dump.c. */ | |
109c3e39 AC |
2459 | { |
2460 | struct gdb_exception ex | |
2461 | = catch_exception (uiout, remote_start_remote, NULL, RETURN_MASK_ALL); | |
2462 | if (ex.reason < 0) | |
2463 | { | |
2464 | pop_target (); | |
2465 | if (async_p) | |
2466 | wait_forever_enabled_p = 1; | |
2467 | throw_exception (ex); | |
2468 | } | |
2469 | } | |
c906108c | 2470 | |
92d1e331 DJ |
2471 | if (async_p) |
2472 | wait_forever_enabled_p = 1; | |
6426a772 JM |
2473 | |
2474 | if (extended_p) | |
43ff13b4 | 2475 | { |
6240bebf | 2476 | /* Tell the remote that we are using the extended protocol. */ |
6426a772 | 2477 | putpkt ("!"); |
6d820c5c | 2478 | getpkt (&rs->buf, &rs->buf_size, 0); |
43ff13b4 | 2479 | } |
a77053c2 | 2480 | |
9353355f | 2481 | post_create_inferior (¤t_target, from_tty); |
f78f6cf1 | 2482 | |
23860348 | 2483 | if (exec_bfd) /* No use without an exec file. */ |
9353355f | 2484 | remote_check_symbols (symfile_objfile); |
43ff13b4 JM |
2485 | } |
2486 | ||
c906108c SS |
2487 | /* This takes a program previously attached to and detaches it. After |
2488 | this is done, GDB can be used to debug some other program. We | |
2489 | better not have left any breakpoints in the target program or it'll | |
2490 | die when it hits one. */ | |
2491 | ||
2492 | static void | |
fba45db2 | 2493 | remote_detach (char *args, int from_tty) |
c906108c | 2494 | { |
d01949b6 | 2495 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2496 | |
2497 | if (args) | |
8a3fe4f8 | 2498 | error (_("Argument given to \"detach\" when remotely debugging.")); |
c906108c SS |
2499 | |
2500 | /* Tell the remote target to detach. */ | |
6d820c5c DJ |
2501 | strcpy (rs->buf, "D"); |
2502 | remote_send (&rs->buf, &rs->buf_size); | |
c906108c | 2503 | |
23860348 | 2504 | /* Unregister the file descriptor from the event loop. */ |
6ad8ae5c DJ |
2505 | if (target_is_async_p ()) |
2506 | serial_async (remote_desc, NULL, 0); | |
2507 | ||
cca728d0 | 2508 | target_mourn_inferior (); |
c906108c SS |
2509 | if (from_tty) |
2510 | puts_filtered ("Ending remote debugging.\n"); | |
2511 | } | |
2512 | ||
6ad8ae5c DJ |
2513 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
2514 | ||
43ff13b4 | 2515 | static void |
597320e7 | 2516 | remote_disconnect (struct target_ops *target, char *args, int from_tty) |
43ff13b4 | 2517 | { |
43ff13b4 | 2518 | if (args) |
8a3fe4f8 | 2519 | error (_("Argument given to \"detach\" when remotely debugging.")); |
43ff13b4 | 2520 | |
23860348 | 2521 | /* Unregister the file descriptor from the event loop. */ |
ed9a39eb | 2522 | if (target_is_async_p ()) |
2cd58942 | 2523 | serial_async (remote_desc, NULL, 0); |
43ff13b4 | 2524 | |
cca728d0 | 2525 | target_mourn_inferior (); |
43ff13b4 JM |
2526 | if (from_tty) |
2527 | puts_filtered ("Ending remote debugging.\n"); | |
2528 | } | |
2529 | ||
c906108c SS |
2530 | /* Convert hex digit A to a number. */ |
2531 | ||
30559e10 | 2532 | static int |
fba45db2 | 2533 | fromhex (int a) |
c906108c SS |
2534 | { |
2535 | if (a >= '0' && a <= '9') | |
2536 | return a - '0'; | |
2537 | else if (a >= 'a' && a <= 'f') | |
2538 | return a - 'a' + 10; | |
2539 | else if (a >= 'A' && a <= 'F') | |
2540 | return a - 'A' + 10; | |
c5aa993b | 2541 | else |
8a3fe4f8 | 2542 | error (_("Reply contains invalid hex digit %d"), a); |
c906108c SS |
2543 | } |
2544 | ||
30559e10 | 2545 | static int |
cfd77fa1 | 2546 | hex2bin (const char *hex, gdb_byte *bin, int count) |
30559e10 MS |
2547 | { |
2548 | int i; | |
2549 | ||
30559e10 MS |
2550 | for (i = 0; i < count; i++) |
2551 | { | |
2552 | if (hex[0] == 0 || hex[1] == 0) | |
2553 | { | |
2554 | /* Hex string is short, or of uneven length. | |
23860348 | 2555 | Return the count that has been converted so far. */ |
30559e10 MS |
2556 | return i; |
2557 | } | |
2558 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); | |
2559 | hex += 2; | |
2560 | } | |
2561 | return i; | |
2562 | } | |
2563 | ||
c906108c SS |
2564 | /* Convert number NIB to a hex digit. */ |
2565 | ||
2566 | static int | |
fba45db2 | 2567 | tohex (int nib) |
c906108c SS |
2568 | { |
2569 | if (nib < 10) | |
c5aa993b | 2570 | return '0' + nib; |
c906108c | 2571 | else |
c5aa993b | 2572 | return 'a' + nib - 10; |
c906108c | 2573 | } |
30559e10 MS |
2574 | |
2575 | static int | |
cfd77fa1 | 2576 | bin2hex (const gdb_byte *bin, char *hex, int count) |
30559e10 MS |
2577 | { |
2578 | int i; | |
23860348 | 2579 | /* May use a length, or a nul-terminated string as input. */ |
30559e10 | 2580 | if (count == 0) |
cfd77fa1 | 2581 | count = strlen ((char *) bin); |
30559e10 MS |
2582 | |
2583 | for (i = 0; i < count; i++) | |
2584 | { | |
2585 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
2586 | *hex++ = tohex (*bin++ & 0xf); | |
2587 | } | |
2588 | *hex = 0; | |
2589 | return i; | |
2590 | } | |
c906108c | 2591 | \f |
506fb367 DJ |
2592 | /* Check for the availability of vCont. This function should also check |
2593 | the response. */ | |
c906108c SS |
2594 | |
2595 | static void | |
6d820c5c | 2596 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 2597 | { |
2e9f7625 | 2598 | char *buf; |
6d820c5c | 2599 | |
2e9f7625 DJ |
2600 | strcpy (rs->buf, "vCont?"); |
2601 | putpkt (rs->buf); | |
6d820c5c | 2602 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 2603 | buf = rs->buf; |
c906108c | 2604 | |
506fb367 DJ |
2605 | /* Make sure that the features we assume are supported. */ |
2606 | if (strncmp (buf, "vCont", 5) == 0) | |
2607 | { | |
2608 | char *p = &buf[5]; | |
2609 | int support_s, support_S, support_c, support_C; | |
2610 | ||
2611 | support_s = 0; | |
2612 | support_S = 0; | |
2613 | support_c = 0; | |
2614 | support_C = 0; | |
2615 | while (p && *p == ';') | |
2616 | { | |
2617 | p++; | |
2618 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2619 | support_s = 1; | |
2620 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2621 | support_S = 1; | |
2622 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2623 | support_c = 1; | |
2624 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2625 | support_C = 1; | |
2626 | ||
2627 | p = strchr (p, ';'); | |
2628 | } | |
c906108c | 2629 | |
506fb367 DJ |
2630 | /* If s, S, c, and C are not all supported, we can't use vCont. Clearing |
2631 | BUF will make packet_ok disable the packet. */ | |
2632 | if (!support_s || !support_S || !support_c || !support_C) | |
2633 | buf[0] = 0; | |
2634 | } | |
c906108c | 2635 | |
444abaca | 2636 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 2637 | } |
c906108c | 2638 | |
506fb367 DJ |
2639 | /* Resume the remote inferior by using a "vCont" packet. The thread |
2640 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
2641 | resumed thread should be single-stepped and/or signalled. If PTID's | |
2642 | PID is -1, then all threads are resumed; the thread to be stepped and/or | |
2643 | signalled is given in the global INFERIOR_PTID. This function returns | |
2644 | non-zero iff it resumes the inferior. | |
44eaed12 | 2645 | |
506fb367 DJ |
2646 | This function issues a strict subset of all possible vCont commands at the |
2647 | moment. */ | |
44eaed12 | 2648 | |
506fb367 DJ |
2649 | static int |
2650 | remote_vcont_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
2651 | { | |
2652 | struct remote_state *rs = get_remote_state (); | |
2653 | int pid = PIDGET (ptid); | |
2963ee1d | 2654 | char *buf = NULL, *outbuf; |
506fb367 | 2655 | struct cleanup *old_cleanup; |
44eaed12 | 2656 | |
444abaca | 2657 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 2658 | remote_vcont_probe (rs); |
44eaed12 | 2659 | |
444abaca | 2660 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_DISABLE) |
6d820c5c | 2661 | return 0; |
44eaed12 | 2662 | |
506fb367 DJ |
2663 | /* If we could generate a wider range of packets, we'd have to worry |
2664 | about overflowing BUF. Should there be a generic | |
2665 | "multi-part-packet" packet? */ | |
2666 | ||
2667 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) | |
c906108c | 2668 | { |
506fb367 DJ |
2669 | /* MAGIC_NULL_PTID means that we don't have any active threads, so we |
2670 | don't have any PID numbers the inferior will understand. Make sure | |
2671 | to only send forms that do not specify a PID. */ | |
2672 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d | 2673 | outbuf = xstrprintf ("vCont;S%02x", siggnal); |
506fb367 | 2674 | else if (step) |
2963ee1d | 2675 | outbuf = xstrprintf ("vCont;s"); |
506fb367 | 2676 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d | 2677 | outbuf = xstrprintf ("vCont;C%02x", siggnal); |
506fb367 | 2678 | else |
2963ee1d | 2679 | outbuf = xstrprintf ("vCont;c"); |
506fb367 DJ |
2680 | } |
2681 | else if (pid == -1) | |
2682 | { | |
2683 | /* Resume all threads, with preference for INFERIOR_PTID. */ | |
2684 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d DJ |
2685 | outbuf = xstrprintf ("vCont;S%02x:%x;c", siggnal, |
2686 | PIDGET (inferior_ptid)); | |
506fb367 | 2687 | else if (step) |
2963ee1d | 2688 | outbuf = xstrprintf ("vCont;s:%x;c", PIDGET (inferior_ptid)); |
506fb367 | 2689 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d DJ |
2690 | outbuf = xstrprintf ("vCont;C%02x:%x;c", siggnal, |
2691 | PIDGET (inferior_ptid)); | |
506fb367 | 2692 | else |
2963ee1d | 2693 | outbuf = xstrprintf ("vCont;c"); |
c906108c SS |
2694 | } |
2695 | else | |
506fb367 DJ |
2696 | { |
2697 | /* Scheduler locking; resume only PTID. */ | |
2698 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d | 2699 | outbuf = xstrprintf ("vCont;S%02x:%x", siggnal, pid); |
506fb367 | 2700 | else if (step) |
2963ee1d | 2701 | outbuf = xstrprintf ("vCont;s:%x", pid); |
506fb367 | 2702 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d | 2703 | outbuf = xstrprintf ("vCont;C%02x:%x", siggnal, pid); |
506fb367 | 2704 | else |
2963ee1d | 2705 | outbuf = xstrprintf ("vCont;c:%x", pid); |
506fb367 | 2706 | } |
c906108c | 2707 | |
ea9c271d | 2708 | gdb_assert (outbuf && strlen (outbuf) < get_remote_packet_size ()); |
6d820c5c | 2709 | old_cleanup = make_cleanup (xfree, outbuf); |
2963ee1d DJ |
2710 | |
2711 | putpkt (outbuf); | |
506fb367 DJ |
2712 | |
2713 | do_cleanups (old_cleanup); | |
2714 | ||
2715 | return 1; | |
c906108c | 2716 | } |
43ff13b4 | 2717 | |
506fb367 DJ |
2718 | /* Tell the remote machine to resume. */ |
2719 | ||
2720 | static enum target_signal last_sent_signal = TARGET_SIGNAL_0; | |
2721 | ||
2722 | static int last_sent_step; | |
2723 | ||
43ff13b4 | 2724 | static void |
506fb367 | 2725 | remote_resume (ptid_t ptid, int step, enum target_signal siggnal) |
43ff13b4 | 2726 | { |
d01949b6 | 2727 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 2728 | char *buf; |
39f77062 | 2729 | int pid = PIDGET (ptid); |
43ff13b4 | 2730 | |
43ff13b4 JM |
2731 | last_sent_signal = siggnal; |
2732 | last_sent_step = step; | |
2733 | ||
2734 | /* A hook for when we need to do something at the last moment before | |
2735 | resumption. */ | |
9a4105ab AC |
2736 | if (deprecated_target_resume_hook) |
2737 | (*deprecated_target_resume_hook) (); | |
43ff13b4 | 2738 | |
506fb367 DJ |
2739 | /* The vCont packet doesn't need to specify threads via Hc. */ |
2740 | if (remote_vcont_resume (ptid, step, siggnal)) | |
2741 | return; | |
2742 | ||
2743 | /* All other supported resume packets do use Hc, so call set_thread. */ | |
2744 | if (pid == -1) | |
23860348 | 2745 | set_thread (0, 0); /* Run any thread. */ |
506fb367 | 2746 | else |
23860348 | 2747 | set_thread (pid, 0); /* Run this thread. */ |
506fb367 | 2748 | |
2e9f7625 | 2749 | buf = rs->buf; |
43ff13b4 JM |
2750 | if (siggnal != TARGET_SIGNAL_0) |
2751 | { | |
2752 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 2753 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 2754 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
2755 | buf[3] = '\0'; |
2756 | } | |
2757 | else | |
c5aa993b | 2758 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 2759 | |
44eaed12 | 2760 | putpkt (buf); |
506fb367 DJ |
2761 | } |
2762 | ||
23860348 | 2763 | /* Same as remote_resume, but with async support. */ |
506fb367 DJ |
2764 | static void |
2765 | remote_async_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
2766 | { | |
2767 | remote_resume (ptid, step, siggnal); | |
43ff13b4 | 2768 | |
2acceee2 JM |
2769 | /* We are about to start executing the inferior, let's register it |
2770 | with the event loop. NOTE: this is the one place where all the | |
2771 | execution commands end up. We could alternatively do this in each | |
23860348 | 2772 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
2773 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
2774 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 2775 | NOT asynchronously. */ |
362646f5 | 2776 | if (target_can_async_p ()) |
2acceee2 | 2777 | target_async (inferior_event_handler, 0); |
23860348 | 2778 | /* Tell the world that the target is now executing. */ |
2acceee2 JM |
2779 | /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set |
2780 | this? Instead, should the client of target just assume (for | |
2781 | async targets) that the target is going to start executing? Is | |
2782 | this information already found in the continuation block? */ | |
ed9a39eb | 2783 | if (target_is_async_p ()) |
2acceee2 | 2784 | target_executing = 1; |
43ff13b4 | 2785 | } |
c906108c | 2786 | \f |
43ff13b4 JM |
2787 | |
2788 | /* Set up the signal handler for SIGINT, while the target is | |
23860348 | 2789 | executing, ovewriting the 'regular' SIGINT signal handler. */ |
43ff13b4 | 2790 | static void |
fba45db2 | 2791 | initialize_sigint_signal_handler (void) |
43ff13b4 | 2792 | { |
c5aa993b | 2793 | sigint_remote_token = |
43ff13b4 JM |
2794 | create_async_signal_handler (async_remote_interrupt, NULL); |
2795 | signal (SIGINT, handle_remote_sigint); | |
2796 | } | |
2797 | ||
23860348 | 2798 | /* Signal handler for SIGINT, while the target is executing. */ |
43ff13b4 | 2799 | static void |
fba45db2 | 2800 | handle_remote_sigint (int sig) |
43ff13b4 JM |
2801 | { |
2802 | signal (sig, handle_remote_sigint_twice); | |
c5aa993b | 2803 | sigint_remote_twice_token = |
43ff13b4 JM |
2804 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
2805 | mark_async_signal_handler_wrapper (sigint_remote_token); | |
2806 | } | |
2807 | ||
2808 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
2809 | sent once. It will take effect the second time that the user sends | |
23860348 | 2810 | a ^C. */ |
43ff13b4 | 2811 | static void |
fba45db2 | 2812 | handle_remote_sigint_twice (int sig) |
43ff13b4 JM |
2813 | { |
2814 | signal (sig, handle_sigint); | |
c5aa993b | 2815 | sigint_remote_twice_token = |
2df3850c | 2816 | create_async_signal_handler (inferior_event_handler_wrapper, NULL); |
43ff13b4 JM |
2817 | mark_async_signal_handler_wrapper (sigint_remote_twice_token); |
2818 | } | |
2819 | ||
6426a772 | 2820 | /* Perform the real interruption of the target execution, in response |
23860348 | 2821 | to a ^C. */ |
c5aa993b | 2822 | static void |
fba45db2 | 2823 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
2824 | { |
2825 | if (remote_debug) | |
2826 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
2827 | ||
2828 | target_stop (); | |
2829 | } | |
2830 | ||
2831 | /* Perform interrupt, if the first attempt did not succeed. Just give | |
23860348 | 2832 | up on the target alltogether. */ |
2df3850c | 2833 | void |
fba45db2 | 2834 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 2835 | { |
2df3850c JM |
2836 | if (remote_debug) |
2837 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt_twice called\n"); | |
6426a772 | 2838 | /* Do something only if the target was not killed by the previous |
23860348 | 2839 | cntl-C. */ |
6426a772 JM |
2840 | if (target_executing) |
2841 | { | |
2842 | interrupt_query (); | |
2843 | signal (SIGINT, handle_remote_sigint); | |
2844 | } | |
43ff13b4 JM |
2845 | } |
2846 | ||
2847 | /* Reinstall the usual SIGINT handlers, after the target has | |
23860348 | 2848 | stopped. */ |
6426a772 JM |
2849 | static void |
2850 | cleanup_sigint_signal_handler (void *dummy) | |
43ff13b4 JM |
2851 | { |
2852 | signal (SIGINT, handle_sigint); | |
2853 | if (sigint_remote_twice_token) | |
2bc416ba | 2854 | delete_async_signal_handler ((struct async_signal_handler **) |
23860348 | 2855 | &sigint_remote_twice_token); |
43ff13b4 | 2856 | if (sigint_remote_token) |
2bc416ba | 2857 | delete_async_signal_handler ((struct async_signal_handler **) |
23860348 | 2858 | &sigint_remote_token); |
43ff13b4 JM |
2859 | } |
2860 | ||
c906108c SS |
2861 | /* Send ^C to target to halt it. Target will respond, and send us a |
2862 | packet. */ | |
507f3c78 | 2863 | static void (*ofunc) (int); |
c906108c | 2864 | |
7a292a7a SS |
2865 | /* The command line interface's stop routine. This function is installed |
2866 | as a signal handler for SIGINT. The first time a user requests a | |
2867 | stop, we call remote_stop to send a break or ^C. If there is no | |
2868 | response from the target (it didn't stop when the user requested it), | |
23860348 | 2869 | we ask the user if he'd like to detach from the target. */ |
c906108c | 2870 | static void |
fba45db2 | 2871 | remote_interrupt (int signo) |
c906108c | 2872 | { |
23860348 | 2873 | /* If this doesn't work, try more severe steps. */ |
7a292a7a SS |
2874 | signal (signo, remote_interrupt_twice); |
2875 | ||
2876 | if (remote_debug) | |
0f71a2f6 | 2877 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); |
7a292a7a SS |
2878 | |
2879 | target_stop (); | |
2880 | } | |
2881 | ||
2882 | /* The user typed ^C twice. */ | |
2883 | ||
2884 | static void | |
fba45db2 | 2885 | remote_interrupt_twice (int signo) |
7a292a7a SS |
2886 | { |
2887 | signal (signo, ofunc); | |
2888 | interrupt_query (); | |
c906108c SS |
2889 | signal (signo, remote_interrupt); |
2890 | } | |
7a292a7a SS |
2891 | |
2892 | /* This is the generic stop called via the target vector. When a target | |
2893 | interrupt is requested, either by the command line or the GUI, we | |
23860348 | 2894 | will eventually end up here. */ |
c906108c | 2895 | static void |
fba45db2 | 2896 | remote_stop (void) |
c906108c | 2897 | { |
7a292a7a SS |
2898 | /* Send a break or a ^C, depending on user preference. */ |
2899 | if (remote_debug) | |
0f71a2f6 | 2900 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 2901 | |
7a292a7a | 2902 | if (remote_break) |
2cd58942 | 2903 | serial_send_break (remote_desc); |
c906108c | 2904 | else |
2cd58942 | 2905 | serial_write (remote_desc, "\003", 1); |
c906108c SS |
2906 | } |
2907 | ||
2908 | /* Ask the user what to do when an interrupt is received. */ | |
2909 | ||
2910 | static void | |
fba45db2 | 2911 | interrupt_query (void) |
c906108c SS |
2912 | { |
2913 | target_terminal_ours (); | |
2914 | ||
2915 | if (query ("Interrupted while waiting for the program.\n\ | |
2916 | Give up (and stop debugging it)? ")) | |
2917 | { | |
2918 | target_mourn_inferior (); | |
315a522e | 2919 | deprecated_throw_reason (RETURN_QUIT); |
c906108c SS |
2920 | } |
2921 | ||
2922 | target_terminal_inferior (); | |
2923 | } | |
2924 | ||
6426a772 JM |
2925 | /* Enable/disable target terminal ownership. Most targets can use |
2926 | terminal groups to control terminal ownership. Remote targets are | |
2927 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 2928 | is required. */ |
6426a772 JM |
2929 | |
2930 | static void | |
2931 | remote_async_terminal_inferior (void) | |
2932 | { | |
2933 | /* FIXME: cagney/1999-09-27: Shouldn't need to test for | |
2934 | sync_execution here. This function should only be called when | |
2935 | GDB is resuming the inferior in the forground. A background | |
2936 | resume (``run&'') should leave GDB in control of the terminal and | |
23860348 | 2937 | consequently should not call this code. */ |
6426a772 JM |
2938 | if (!sync_execution) |
2939 | return; | |
2940 | /* FIXME: cagney/1999-09-27: Closely related to the above. Make | |
2941 | calls target_terminal_*() idenpotent. The event-loop GDB talking | |
2942 | to an asynchronous target with a synchronous command calls this | |
2943 | function from both event-top.c and infrun.c/infcmd.c. Once GDB | |
2944 | stops trying to transfer the terminal to the target when it | |
2945 | shouldn't this guard can go away. */ | |
2946 | if (!remote_async_terminal_ours_p) | |
2947 | return; | |
2948 | delete_file_handler (input_fd); | |
2949 | remote_async_terminal_ours_p = 0; | |
2950 | initialize_sigint_signal_handler (); | |
2951 | /* NOTE: At this point we could also register our selves as the | |
2952 | recipient of all input. Any characters typed could then be | |
23860348 | 2953 | passed on down to the target. */ |
6426a772 JM |
2954 | } |
2955 | ||
2956 | static void | |
2957 | remote_async_terminal_ours (void) | |
2958 | { | |
23860348 | 2959 | /* See FIXME in remote_async_terminal_inferior. */ |
6426a772 JM |
2960 | if (!sync_execution) |
2961 | return; | |
23860348 | 2962 | /* See FIXME in remote_async_terminal_inferior. */ |
6426a772 JM |
2963 | if (remote_async_terminal_ours_p) |
2964 | return; | |
2965 | cleanup_sigint_signal_handler (NULL); | |
2966 | add_file_handler (input_fd, stdin_event_handler, 0); | |
2967 | remote_async_terminal_ours_p = 1; | |
2968 | } | |
2969 | ||
c906108c SS |
2970 | /* If nonzero, ignore the next kill. */ |
2971 | ||
2972 | int kill_kludge; | |
2973 | ||
2974 | void | |
917317f4 | 2975 | remote_console_output (char *msg) |
c906108c SS |
2976 | { |
2977 | char *p; | |
2978 | ||
c5aa993b | 2979 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
2980 | { |
2981 | char tb[2]; | |
2982 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
2983 | tb[0] = c; | |
2984 | tb[1] = 0; | |
43ff13b4 | 2985 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 2986 | } |
917317f4 | 2987 | gdb_flush (gdb_stdtarg); |
c906108c SS |
2988 | } |
2989 | ||
0f71a2f6 JM |
2990 | /* Wait until the remote machine stops, then return, |
2991 | storing status in STATUS just as `wait' would. | |
802188a7 | 2992 | Returns "pid", which in the case of a multi-threaded |
0f71a2f6 | 2993 | remote OS, is the thread-id. */ |
c906108c | 2994 | |
39f77062 KB |
2995 | static ptid_t |
2996 | remote_wait (ptid_t ptid, struct target_waitstatus *status) | |
c906108c | 2997 | { |
d01949b6 | 2998 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 2999 | struct remote_arch_state *rsa = get_remote_arch_state (); |
b2dd6311 | 3000 | ULONGEST thread_num = -1; |
3c3bea1c | 3001 | ULONGEST addr; |
c906108c SS |
3002 | |
3003 | status->kind = TARGET_WAITKIND_EXITED; | |
3004 | status->value.integer = 0; | |
3005 | ||
3006 | while (1) | |
3007 | { | |
2e9f7625 | 3008 | char *buf, *p; |
c906108c | 3009 | |
c906108c | 3010 | ofunc = signal (SIGINT, remote_interrupt); |
6d820c5c | 3011 | getpkt (&rs->buf, &rs->buf_size, 1); |
c906108c SS |
3012 | signal (SIGINT, ofunc); |
3013 | ||
2e9f7625 DJ |
3014 | buf = rs->buf; |
3015 | ||
c906108c | 3016 | /* This is a hook for when we need to do something (perhaps the |
c5aa993b | 3017 | collection of trace data) every time the target stops. */ |
9a4105ab AC |
3018 | if (deprecated_target_wait_loop_hook) |
3019 | (*deprecated_target_wait_loop_hook) (); | |
c906108c | 3020 | |
3c3bea1c GS |
3021 | remote_stopped_by_watchpoint_p = 0; |
3022 | ||
c906108c SS |
3023 | switch (buf[0]) |
3024 | { | |
23860348 | 3025 | case 'E': /* Error of some sort. */ |
8a3fe4f8 | 3026 | warning (_("Remote failure reply: %s"), buf); |
c906108c | 3027 | continue; |
23860348 | 3028 | case 'F': /* File-I/O request. */ |
449092f6 CV |
3029 | remote_fileio_request (buf); |
3030 | continue; | |
23860348 | 3031 | case 'T': /* Status with PC, SP, FP, ... */ |
c906108c | 3032 | { |
cfd77fa1 | 3033 | gdb_byte regs[MAX_REGISTER_SIZE]; |
c906108c | 3034 | |
23860348 | 3035 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
c906108c | 3036 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where |
c5aa993b JM |
3037 | ss = signal number |
3038 | n... = register number | |
3039 | r... = register contents | |
3040 | */ | |
c906108c SS |
3041 | p = &buf[3]; /* after Txx */ |
3042 | ||
3043 | while (*p) | |
3044 | { | |
cfd77fa1 | 3045 | char *p1; |
c906108c | 3046 | char *p_temp; |
97345198 | 3047 | int fieldsize; |
3c3bea1c GS |
3048 | LONGEST pnum = 0; |
3049 | ||
23860348 MS |
3050 | /* If the packet contains a register number save it in |
3051 | pnum and set p1 to point to the character following | |
3052 | it. Otherwise p1 points to p. */ | |
c906108c | 3053 | |
23860348 MS |
3054 | /* If this packet is an awatch packet, don't parse the |
3055 | 'a' as a register number. */ | |
3c3bea1c GS |
3056 | |
3057 | if (strncmp (p, "awatch", strlen("awatch")) != 0) | |
3058 | { | |
3059 | /* Read the ``P'' register number. */ | |
3060 | pnum = strtol (p, &p_temp, 16); | |
cfd77fa1 | 3061 | p1 = p_temp; |
3c3bea1c | 3062 | } |
802188a7 | 3063 | else |
3c3bea1c | 3064 | p1 = p; |
c906108c | 3065 | |
23860348 | 3066 | if (p1 == p) /* No register number present here. */ |
c906108c | 3067 | { |
cfd77fa1 | 3068 | p1 = strchr (p, ':'); |
c906108c | 3069 | if (p1 == NULL) |
670aa98f | 3070 | error (_("Malformed packet(a) (missing colon): %s\n\ |
8a3fe4f8 | 3071 | Packet: '%s'\n"), |
670aa98f | 3072 | p, buf); |
3c3bea1c | 3073 | if (strncmp (p, "thread", p1 - p) == 0) |
c906108c SS |
3074 | { |
3075 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
3076 | record_currthread (thread_num); | |
cfd77fa1 | 3077 | p = p_temp; |
c906108c | 3078 | } |
3c3bea1c GS |
3079 | else if ((strncmp (p, "watch", p1 - p) == 0) |
3080 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
3081 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
3082 | { | |
3083 | remote_stopped_by_watchpoint_p = 1; | |
3084 | p = unpack_varlen_hex (++p1, &addr); | |
3085 | remote_watch_data_address = (CORE_ADDR)addr; | |
3086 | } | |
3087 | else | |
3088 | { | |
3089 | /* Silently skip unknown optional info. */ | |
3090 | p_temp = strchr (p1 + 1, ';'); | |
3091 | if (p_temp) | |
cfd77fa1 | 3092 | p = p_temp; |
3c3bea1c | 3093 | } |
c906108c SS |
3094 | } |
3095 | else | |
3096 | { | |
ea9c271d | 3097 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); |
c906108c SS |
3098 | p = p1; |
3099 | ||
3100 | if (*p++ != ':') | |
8a3fe4f8 AC |
3101 | error (_("Malformed packet(b) (missing colon): %s\n\ |
3102 | Packet: '%s'\n"), | |
3fcb8548 | 3103 | p, buf); |
c906108c | 3104 | |
ad10f812 | 3105 | if (reg == NULL) |
8a3fe4f8 AC |
3106 | error (_("Remote sent bad register number %s: %s\n\ |
3107 | Packet: '%s'\n"), | |
3fcb8548 | 3108 | phex_nz (pnum, 0), p, buf); |
c906108c | 3109 | |
cfd77fa1 | 3110 | fieldsize = hex2bin (p, regs, |
2bc416ba | 3111 | register_size (current_gdbarch, |
23860348 | 3112 | reg->regnum)); |
97345198 | 3113 | p += 2 * fieldsize; |
2bc416ba | 3114 | if (fieldsize < register_size (current_gdbarch, |
23860348 | 3115 | reg->regnum)) |
8a3fe4f8 | 3116 | warning (_("Remote reply is too short: %s"), buf); |
2bc416ba | 3117 | regcache_raw_supply (current_regcache, |
23860348 | 3118 | reg->regnum, regs); |
c906108c SS |
3119 | } |
3120 | ||
3121 | if (*p++ != ';') | |
2bc416ba | 3122 | error (_("Remote register badly formatted: %s\nhere: %s"), |
23860348 | 3123 | buf, p); |
c906108c SS |
3124 | } |
3125 | } | |
3126 | /* fall through */ | |
23860348 | 3127 | case 'S': /* Old style status, just signal only. */ |
c906108c SS |
3128 | status->kind = TARGET_WAITKIND_STOPPED; |
3129 | status->value.sig = (enum target_signal) | |
3130 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3131 | ||
0f71a2f6 JM |
3132 | if (buf[3] == 'p') |
3133 | { | |
0f71a2f6 JM |
3134 | thread_num = strtol ((const char *) &buf[4], NULL, 16); |
3135 | record_currthread (thread_num); | |
3136 | } | |
c906108c | 3137 | goto got_status; |
23860348 | 3138 | case 'W': /* Target exited. */ |
c906108c SS |
3139 | { |
3140 | /* The remote process exited. */ | |
3141 | status->kind = TARGET_WAITKIND_EXITED; | |
3142 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
3143 | goto got_status; | |
3144 | } | |
3145 | case 'X': | |
3146 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
3147 | status->value.sig = (enum target_signal) | |
3148 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3149 | kill_kludge = 1; | |
3150 | ||
3151 | goto got_status; | |
23860348 | 3152 | case 'O': /* Console output. */ |
c906108c SS |
3153 | remote_console_output (buf + 1); |
3154 | continue; | |
3155 | case '\0': | |
3156 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3157 | { | |
3158 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3159 | the remote system doesn't support it. */ |
c906108c SS |
3160 | target_terminal_ours_for_output (); |
3161 | printf_filtered | |
3162 | ("Can't send signals to this remote system. %s not sent.\n", | |
3163 | target_signal_to_name (last_sent_signal)); | |
3164 | last_sent_signal = TARGET_SIGNAL_0; | |
3165 | target_terminal_inferior (); | |
3166 | ||
3167 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3168 | putpkt ((char *) buf); | |
3169 | continue; | |
3170 | } | |
3171 | /* else fallthrough */ | |
3172 | default: | |
8a3fe4f8 | 3173 | warning (_("Invalid remote reply: %s"), buf); |
c906108c SS |
3174 | continue; |
3175 | } | |
3176 | } | |
c5aa993b | 3177 | got_status: |
c906108c SS |
3178 | if (thread_num != -1) |
3179 | { | |
39f77062 | 3180 | return pid_to_ptid (thread_num); |
c906108c | 3181 | } |
39f77062 | 3182 | return inferior_ptid; |
c906108c SS |
3183 | } |
3184 | ||
23860348 | 3185 | /* Async version of remote_wait. */ |
39f77062 KB |
3186 | static ptid_t |
3187 | remote_async_wait (ptid_t ptid, struct target_waitstatus *status) | |
43ff13b4 | 3188 | { |
d01949b6 | 3189 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 3190 | struct remote_arch_state *rsa = get_remote_arch_state (); |
b2dd6311 | 3191 | ULONGEST thread_num = -1; |
3c3bea1c | 3192 | ULONGEST addr; |
43ff13b4 JM |
3193 | |
3194 | status->kind = TARGET_WAITKIND_EXITED; | |
3195 | status->value.integer = 0; | |
3196 | ||
3c3bea1c GS |
3197 | remote_stopped_by_watchpoint_p = 0; |
3198 | ||
43ff13b4 JM |
3199 | while (1) |
3200 | { | |
2e9f7625 | 3201 | char *buf, *p; |
c5aa993b | 3202 | |
ed9a39eb | 3203 | if (!target_is_async_p ()) |
43ff13b4 | 3204 | ofunc = signal (SIGINT, remote_interrupt); |
6426a772 JM |
3205 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
3206 | _never_ wait for ever -> test on target_is_async_p(). | |
3207 | However, before we do that we need to ensure that the caller | |
23860348 | 3208 | knows how to take the target into/out of async mode. */ |
6d820c5c | 3209 | getpkt (&rs->buf, &rs->buf_size, wait_forever_enabled_p); |
ed9a39eb | 3210 | if (!target_is_async_p ()) |
43ff13b4 JM |
3211 | signal (SIGINT, ofunc); |
3212 | ||
2e9f7625 DJ |
3213 | buf = rs->buf; |
3214 | ||
43ff13b4 | 3215 | /* This is a hook for when we need to do something (perhaps the |
c5aa993b | 3216 | collection of trace data) every time the target stops. */ |
9a4105ab AC |
3217 | if (deprecated_target_wait_loop_hook) |
3218 | (*deprecated_target_wait_loop_hook) (); | |
43ff13b4 JM |
3219 | |
3220 | switch (buf[0]) | |
3221 | { | |
23860348 | 3222 | case 'E': /* Error of some sort. */ |
8a3fe4f8 | 3223 | warning (_("Remote failure reply: %s"), buf); |
43ff13b4 | 3224 | continue; |
23860348 | 3225 | case 'F': /* File-I/O request. */ |
449092f6 CV |
3226 | remote_fileio_request (buf); |
3227 | continue; | |
23860348 | 3228 | case 'T': /* Status with PC, SP, FP, ... */ |
43ff13b4 | 3229 | { |
cfd77fa1 | 3230 | gdb_byte regs[MAX_REGISTER_SIZE]; |
43ff13b4 | 3231 | |
23860348 | 3232 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
43ff13b4 | 3233 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where |
c5aa993b JM |
3234 | ss = signal number |
3235 | n... = register number | |
3236 | r... = register contents | |
3237 | */ | |
43ff13b4 JM |
3238 | p = &buf[3]; /* after Txx */ |
3239 | ||
3240 | while (*p) | |
3241 | { | |
cfd77fa1 | 3242 | char *p1; |
43ff13b4 | 3243 | char *p_temp; |
6c3f2dbf | 3244 | int fieldsize; |
3c3bea1c | 3245 | long pnum = 0; |
43ff13b4 | 3246 | |
23860348 MS |
3247 | /* If the packet contains a register number, save it |
3248 | in pnum and set p1 to point to the character | |
3249 | following it. Otherwise p1 points to p. */ | |
3c3bea1c GS |
3250 | |
3251 | /* If this packet is an awatch packet, don't parse the 'a' | |
3252 | as a register number. */ | |
802188a7 | 3253 | |
3c3bea1c GS |
3254 | if (!strncmp (p, "awatch", strlen ("awatch")) != 0) |
3255 | { | |
3256 | /* Read the register number. */ | |
3257 | pnum = strtol (p, &p_temp, 16); | |
cfd77fa1 | 3258 | p1 = p_temp; |
3c3bea1c | 3259 | } |
802188a7 | 3260 | else |
3c3bea1c | 3261 | p1 = p; |
43ff13b4 | 3262 | |
23860348 | 3263 | if (p1 == p) /* No register number present here. */ |
43ff13b4 | 3264 | { |
cfd77fa1 | 3265 | p1 = strchr (p, ':'); |
43ff13b4 | 3266 | if (p1 == NULL) |
8a3fe4f8 AC |
3267 | error (_("Malformed packet(a) (missing colon): %s\n\ |
3268 | Packet: '%s'\n"), | |
3fcb8548 | 3269 | p, buf); |
3c3bea1c | 3270 | if (strncmp (p, "thread", p1 - p) == 0) |
43ff13b4 JM |
3271 | { |
3272 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
3273 | record_currthread (thread_num); | |
cfd77fa1 | 3274 | p = p_temp; |
43ff13b4 | 3275 | } |
3c3bea1c GS |
3276 | else if ((strncmp (p, "watch", p1 - p) == 0) |
3277 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
3278 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
3279 | { | |
3280 | remote_stopped_by_watchpoint_p = 1; | |
3281 | p = unpack_varlen_hex (++p1, &addr); | |
3282 | remote_watch_data_address = (CORE_ADDR)addr; | |
3283 | } | |
3284 | else | |
3285 | { | |
3286 | /* Silently skip unknown optional info. */ | |
cfd77fa1 | 3287 | p_temp = strchr (p1 + 1, ';'); |
3c3bea1c GS |
3288 | if (p_temp) |
3289 | p = p_temp; | |
3290 | } | |
43ff13b4 | 3291 | } |
802188a7 | 3292 | |
43ff13b4 JM |
3293 | else |
3294 | { | |
ea9c271d | 3295 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); |
43ff13b4 | 3296 | p = p1; |
43ff13b4 | 3297 | if (*p++ != ':') |
8a3fe4f8 AC |
3298 | error (_("Malformed packet(b) (missing colon): %s\n\ |
3299 | Packet: '%s'\n"), | |
3fcb8548 | 3300 | p, buf); |
43ff13b4 | 3301 | |
ad10f812 | 3302 | if (reg == NULL) |
8a3fe4f8 AC |
3303 | error (_("Remote sent bad register number %ld: %s\n\ |
3304 | Packet: '%s'\n"), | |
3fcb8548 | 3305 | pnum, p, buf); |
43ff13b4 | 3306 | |
cfd77fa1 | 3307 | fieldsize = hex2bin (p, regs, |
2bc416ba | 3308 | register_size (current_gdbarch, |
23860348 | 3309 | reg->regnum)); |
6c3f2dbf | 3310 | p += 2 * fieldsize; |
2bc416ba | 3311 | if (fieldsize < register_size (current_gdbarch, |
23860348 | 3312 | reg->regnum)) |
8a3fe4f8 | 3313 | warning (_("Remote reply is too short: %s"), buf); |
23a6d369 | 3314 | regcache_raw_supply (current_regcache, reg->regnum, regs); |
43ff13b4 JM |
3315 | } |
3316 | ||
3317 | if (*p++ != ';') | |
8a3fe4f8 | 3318 | error (_("Remote register badly formatted: %s\nhere: %s"), |
0a2cfde4 | 3319 | buf, p); |
43ff13b4 JM |
3320 | } |
3321 | } | |
3322 | /* fall through */ | |
23860348 | 3323 | case 'S': /* Old style status, just signal only. */ |
43ff13b4 JM |
3324 | status->kind = TARGET_WAITKIND_STOPPED; |
3325 | status->value.sig = (enum target_signal) | |
3326 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3327 | ||
3328 | if (buf[3] == 'p') | |
3329 | { | |
43ff13b4 JM |
3330 | thread_num = strtol ((const char *) &buf[4], NULL, 16); |
3331 | record_currthread (thread_num); | |
3332 | } | |
43ff13b4 | 3333 | goto got_status; |
23860348 | 3334 | case 'W': /* Target exited. */ |
43ff13b4 JM |
3335 | { |
3336 | /* The remote process exited. */ | |
3337 | status->kind = TARGET_WAITKIND_EXITED; | |
3338 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
3339 | goto got_status; | |
3340 | } | |
3341 | case 'X': | |
3342 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
3343 | status->value.sig = (enum target_signal) | |
3344 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3345 | kill_kludge = 1; | |
3346 | ||
3347 | goto got_status; | |
23860348 | 3348 | case 'O': /* Console output. */ |
43ff13b4 | 3349 | remote_console_output (buf + 1); |
c4093a6a | 3350 | /* Return immediately to the event loop. The event loop will |
23860348 | 3351 | still be waiting on the inferior afterwards. */ |
c4093a6a JM |
3352 | status->kind = TARGET_WAITKIND_IGNORE; |
3353 | goto got_status; | |
43ff13b4 JM |
3354 | case '\0': |
3355 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3356 | { | |
3357 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3358 | the remote system doesn't support it. */ |
43ff13b4 JM |
3359 | target_terminal_ours_for_output (); |
3360 | printf_filtered | |
3361 | ("Can't send signals to this remote system. %s not sent.\n", | |
3362 | target_signal_to_name (last_sent_signal)); | |
3363 | last_sent_signal = TARGET_SIGNAL_0; | |
3364 | target_terminal_inferior (); | |
3365 | ||
3366 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3367 | putpkt ((char *) buf); | |
3368 | continue; | |
3369 | } | |
3370 | /* else fallthrough */ | |
3371 | default: | |
8a3fe4f8 | 3372 | warning (_("Invalid remote reply: %s"), buf); |
43ff13b4 JM |
3373 | continue; |
3374 | } | |
3375 | } | |
c5aa993b | 3376 | got_status: |
43ff13b4 JM |
3377 | if (thread_num != -1) |
3378 | { | |
39f77062 | 3379 | return pid_to_ptid (thread_num); |
43ff13b4 | 3380 | } |
39f77062 | 3381 | return inferior_ptid; |
43ff13b4 JM |
3382 | } |
3383 | ||
c906108c SS |
3384 | /* Number of bytes of registers this stub implements. */ |
3385 | ||
3386 | static int register_bytes_found; | |
3387 | ||
3388 | /* Read the remote registers into the block REGS. */ | |
ad10f812 | 3389 | /* Currently we just read all the registers, so we don't use regnum. */ |
c906108c | 3390 | |
b96ec7ac AC |
3391 | static int |
3392 | fetch_register_using_p (int regnum) | |
3393 | { | |
3394 | struct remote_state *rs = get_remote_state (); | |
2e9f7625 | 3395 | char *buf, *p; |
b96ec7ac AC |
3396 | char regp[MAX_REGISTER_SIZE]; |
3397 | int i; | |
3398 | ||
2e9f7625 | 3399 | p = rs->buf; |
fcad0fa4 JB |
3400 | *p++ = 'p'; |
3401 | p += hexnumstr (p, regnum); | |
3402 | *p++ = '\0'; | |
6d820c5c | 3403 | remote_send (&rs->buf, &rs->buf_size); |
3f9a994c | 3404 | |
2e9f7625 DJ |
3405 | buf = rs->buf; |
3406 | ||
3f9a994c JB |
3407 | /* If the stub didn't recognize the packet, or if we got an error, |
3408 | tell our caller. */ | |
3409 | if (buf[0] == '\0' || buf[0] == 'E') | |
3410 | return 0; | |
3411 | ||
3412 | /* If this register is unfetchable, tell the regcache. */ | |
3413 | if (buf[0] == 'x') | |
8480adf2 | 3414 | { |
3f9a994c JB |
3415 | regcache_raw_supply (current_regcache, regnum, NULL); |
3416 | set_register_cached (regnum, -1); | |
8480adf2 | 3417 | return 1; |
b96ec7ac | 3418 | } |
b96ec7ac | 3419 | |
3f9a994c JB |
3420 | /* Otherwise, parse and supply the value. */ |
3421 | p = buf; | |
3422 | i = 0; | |
3423 | while (p[0] != 0) | |
3424 | { | |
3425 | if (p[1] == 0) | |
3426 | { | |
8a3fe4f8 | 3427 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
3428 | return 0; |
3429 | } | |
3430 | ||
3431 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3432 | p += 2; | |
3433 | } | |
3434 | regcache_raw_supply (current_regcache, regnum, regp); | |
3435 | return 1; | |
b96ec7ac AC |
3436 | } |
3437 | ||
c906108c | 3438 | static void |
ad10f812 | 3439 | remote_fetch_registers (int regnum) |
c906108c | 3440 | { |
d01949b6 | 3441 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 3442 | struct remote_arch_state *rsa = get_remote_arch_state (); |
2e9f7625 | 3443 | char *buf; |
c906108c SS |
3444 | int i; |
3445 | char *p; | |
ea9c271d | 3446 | char *regs = alloca (rsa->sizeof_g_packet); |
c906108c | 3447 | |
39f77062 | 3448 | set_thread (PIDGET (inferior_ptid), 1); |
c906108c | 3449 | |
b323314b AC |
3450 | if (regnum >= 0) |
3451 | { | |
ea9c271d | 3452 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); |
b323314b AC |
3453 | gdb_assert (reg != NULL); |
3454 | if (!reg->in_g_packet) | |
3455 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 AC |
3456 | _("Attempt to fetch a non G-packet register when this " |
3457 | "remote.c does not support the p-packet.")); | |
b323314b | 3458 | } |
444abaca | 3459 | switch (remote_protocol_packets[PACKET_p].support) |
b96ec7ac AC |
3460 | { |
3461 | case PACKET_DISABLE: | |
3462 | break; | |
3463 | case PACKET_ENABLE: | |
3464 | if (fetch_register_using_p (regnum)) | |
3465 | return; | |
3466 | else | |
8a3fe4f8 | 3467 | error (_("Protocol error: p packet not recognized by stub")); |
b96ec7ac AC |
3468 | case PACKET_SUPPORT_UNKNOWN: |
3469 | if (fetch_register_using_p (regnum)) | |
3470 | { | |
3471 | /* The stub recognized the 'p' packet. Remember this. */ | |
444abaca | 3472 | remote_protocol_packets[PACKET_p].support = PACKET_ENABLE; |
b96ec7ac AC |
3473 | return; |
3474 | } | |
3475 | else | |
3476 | { | |
3477 | /* The stub does not support the 'P' packet. Use 'G' | |
3478 | instead, and don't try using 'P' in the future (it | |
3479 | will just waste our time). */ | |
444abaca | 3480 | remote_protocol_packets[PACKET_p].support = PACKET_DISABLE; |
b96ec7ac AC |
3481 | break; |
3482 | } | |
3483 | } | |
b323314b | 3484 | |
2e9f7625 | 3485 | sprintf (rs->buf, "g"); |
6d820c5c | 3486 | remote_send (&rs->buf, &rs->buf_size); |
2e9f7625 | 3487 | buf = rs->buf; |
c906108c | 3488 | |
11cf8741 JM |
3489 | /* Save the size of the packet sent to us by the target. Its used |
3490 | as a heuristic when determining the max size of packets that the | |
23860348 | 3491 | target can safely receive. */ |
ea9c271d DJ |
3492 | if ((rsa->actual_register_packet_size) == 0) |
3493 | (rsa->actual_register_packet_size) = strlen (buf); | |
c906108c SS |
3494 | |
3495 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 3496 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c SS |
3497 | |
3498 | /* We can get out of synch in various cases. If the first character | |
3499 | in the buffer is not a hex character, assume that has happened | |
3500 | and try to fetch another packet to read. */ | |
3501 | while ((buf[0] < '0' || buf[0] > '9') | |
3de11b2e | 3502 | && (buf[0] < 'A' || buf[0] > 'F') |
c906108c | 3503 | && (buf[0] < 'a' || buf[0] > 'f') |
23860348 | 3504 | && buf[0] != 'x') /* New: unavailable register value. */ |
c906108c SS |
3505 | { |
3506 | if (remote_debug) | |
0f71a2f6 JM |
3507 | fprintf_unfiltered (gdb_stdlog, |
3508 | "Bad register packet; fetching a new packet\n"); | |
6d820c5c | 3509 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 3510 | buf = rs->buf; |
c906108c SS |
3511 | } |
3512 | ||
3513 | /* Reply describes registers byte by byte, each byte encoded as two | |
3514 | hex characters. Suck them all up, then supply them to the | |
3515 | register cacheing/storage mechanism. */ | |
3516 | ||
3517 | p = buf; | |
ea9c271d | 3518 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c SS |
3519 | { |
3520 | if (p[0] == 0) | |
3521 | break; | |
3522 | if (p[1] == 0) | |
3523 | { | |
8a3fe4f8 | 3524 | warning (_("Remote reply is of odd length: %s"), buf); |
c906108c SS |
3525 | /* Don't change register_bytes_found in this case, and don't |
3526 | print a second warning. */ | |
3527 | goto supply_them; | |
3528 | } | |
3529 | if (p[0] == 'x' && p[1] == 'x') | |
c5aa993b | 3530 | regs[i] = 0; /* 'x' */ |
c906108c SS |
3531 | else |
3532 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3533 | p += 2; | |
3534 | } | |
3535 | ||
3536 | if (i != register_bytes_found) | |
3537 | { | |
3538 | register_bytes_found = i; | |
2649061d AC |
3539 | if (REGISTER_BYTES_OK_P () |
3540 | && !REGISTER_BYTES_OK (i)) | |
8a3fe4f8 | 3541 | warning (_("Remote reply is too short: %s"), buf); |
c906108c | 3542 | } |
c5aa993b | 3543 | |
b323314b | 3544 | supply_them: |
ad10f812 | 3545 | { |
b323314b AC |
3546 | int i; |
3547 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) | |
ad10f812 | 3548 | { |
ea9c271d | 3549 | struct packet_reg *r = &rsa->regs[i]; |
b323314b AC |
3550 | if (r->in_g_packet) |
3551 | { | |
8ccc1287 AC |
3552 | if (r->offset * 2 >= strlen (buf)) |
3553 | /* A short packet that didn't include the register's | |
3554 | value, this implies that the register is zero (and | |
3555 | not that the register is unavailable). Supply that | |
3556 | zero value. */ | |
3557 | regcache_raw_supply (current_regcache, r->regnum, NULL); | |
3558 | else if (buf[r->offset * 2] == 'x') | |
3559 | { | |
3560 | gdb_assert (r->offset * 2 < strlen (buf)); | |
3561 | /* The register isn't available, mark it as such (at | |
3562 | the same time setting the value to zero). */ | |
3563 | regcache_raw_supply (current_regcache, r->regnum, NULL); | |
3564 | set_register_cached (i, -1); | |
3565 | } | |
3566 | else | |
3567 | regcache_raw_supply (current_regcache, r->regnum, | |
3568 | regs + r->offset); | |
b323314b | 3569 | } |
ad10f812 AC |
3570 | } |
3571 | } | |
c906108c SS |
3572 | } |
3573 | ||
3574 | /* Prepare to store registers. Since we may send them all (using a | |
3575 | 'G' request), we have to read out the ones we don't want to change | |
3576 | first. */ | |
3577 | ||
c5aa993b | 3578 | static void |
fba45db2 | 3579 | remote_prepare_to_store (void) |
c906108c | 3580 | { |
ea9c271d | 3581 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cf0e1e0d | 3582 | int i; |
cfd77fa1 | 3583 | gdb_byte buf[MAX_REGISTER_SIZE]; |
cf0e1e0d | 3584 | |
c906108c | 3585 | /* Make sure the entire registers array is valid. */ |
444abaca | 3586 | switch (remote_protocol_packets[PACKET_P].support) |
5a2468f5 JM |
3587 | { |
3588 | case PACKET_DISABLE: | |
3589 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d DJ |
3590 | /* Make sure all the necessary registers are cached. */ |
3591 | for (i = 0; i < NUM_REGS; i++) | |
ea9c271d DJ |
3592 | if (rsa->regs[i].in_g_packet) |
3593 | regcache_raw_read (current_regcache, rsa->regs[i].regnum, buf); | |
5a2468f5 JM |
3594 | break; |
3595 | case PACKET_ENABLE: | |
3596 | break; | |
3597 | } | |
3598 | } | |
3599 | ||
ad10f812 | 3600 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 3601 | packet was not recognized. */ |
5a2468f5 JM |
3602 | |
3603 | static int | |
ad10f812 | 3604 | store_register_using_P (int regnum) |
5a2468f5 | 3605 | { |
d01949b6 | 3606 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
3607 | struct remote_arch_state *rsa = get_remote_arch_state (); |
3608 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
5a2468f5 | 3609 | /* Try storing a single register. */ |
6d820c5c | 3610 | char *buf = rs->buf; |
cfd77fa1 | 3611 | gdb_byte regp[MAX_REGISTER_SIZE]; |
5a2468f5 | 3612 | char *p; |
5a2468f5 | 3613 | |
ea9c271d | 3614 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 3615 | p = buf + strlen (buf); |
822c9732 | 3616 | regcache_raw_collect (current_regcache, reg->regnum, regp); |
3acba339 | 3617 | bin2hex (regp, p, register_size (current_gdbarch, reg->regnum)); |
6d820c5c | 3618 | remote_send (&rs->buf, &rs->buf_size); |
5a2468f5 | 3619 | |
2e9f7625 | 3620 | return rs->buf[0] != '\0'; |
c906108c SS |
3621 | } |
3622 | ||
5a2468f5 | 3623 | |
23860348 MS |
3624 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
3625 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
3626 | |
3627 | static void | |
ad10f812 | 3628 | remote_store_registers (int regnum) |
c906108c | 3629 | { |
d01949b6 | 3630 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 3631 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cfd77fa1 | 3632 | gdb_byte *regs; |
c906108c SS |
3633 | char *p; |
3634 | ||
39f77062 | 3635 | set_thread (PIDGET (inferior_ptid), 1); |
c906108c | 3636 | |
ad10f812 | 3637 | if (regnum >= 0) |
c906108c | 3638 | { |
444abaca | 3639 | switch (remote_protocol_packets[PACKET_P].support) |
c906108c | 3640 | { |
5a2468f5 JM |
3641 | case PACKET_DISABLE: |
3642 | break; | |
3643 | case PACKET_ENABLE: | |
ad10f812 | 3644 | if (store_register_using_P (regnum)) |
5a2468f5 JM |
3645 | return; |
3646 | else | |
8a3fe4f8 | 3647 | error (_("Protocol error: P packet not recognized by stub")); |
5a2468f5 | 3648 | case PACKET_SUPPORT_UNKNOWN: |
ad10f812 | 3649 | if (store_register_using_P (regnum)) |
5a2468f5 JM |
3650 | { |
3651 | /* The stub recognized the 'P' packet. Remember this. */ | |
444abaca | 3652 | remote_protocol_packets[PACKET_P].support = PACKET_ENABLE; |
5a2468f5 JM |
3653 | return; |
3654 | } | |
3655 | else | |
3656 | { | |
3657 | /* The stub does not support the 'P' packet. Use 'G' | |
3658 | instead, and don't try using 'P' in the future (it | |
3659 | will just waste our time). */ | |
444abaca | 3660 | remote_protocol_packets[PACKET_P].support = PACKET_DISABLE; |
5a2468f5 JM |
3661 | break; |
3662 | } | |
c906108c | 3663 | } |
c906108c SS |
3664 | } |
3665 | ||
193cb69f AC |
3666 | /* Extract all the registers in the regcache copying them into a |
3667 | local buffer. */ | |
3668 | { | |
b323314b | 3669 | int i; |
ea9c271d DJ |
3670 | regs = alloca (rsa->sizeof_g_packet); |
3671 | memset (regs, 0, rsa->sizeof_g_packet); | |
b323314b | 3672 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) |
193cb69f | 3673 | { |
ea9c271d | 3674 | struct packet_reg *r = &rsa->regs[i]; |
b323314b | 3675 | if (r->in_g_packet) |
822c9732 | 3676 | regcache_raw_collect (current_regcache, r->regnum, regs + r->offset); |
193cb69f AC |
3677 | } |
3678 | } | |
c906108c SS |
3679 | |
3680 | /* Command describes registers byte by byte, | |
3681 | each byte encoded as two hex characters. */ | |
6d820c5c | 3682 | p = rs->buf; |
193cb69f | 3683 | *p++ = 'G'; |
c906108c | 3684 | /* remote_prepare_to_store insures that register_bytes_found gets set. */ |
30559e10 | 3685 | bin2hex (regs, p, register_bytes_found); |
6d820c5c | 3686 | remote_send (&rs->buf, &rs->buf_size); |
c906108c | 3687 | } |
c906108c SS |
3688 | \f |
3689 | ||
3690 | /* Return the number of hex digits in num. */ | |
3691 | ||
3692 | static int | |
fba45db2 | 3693 | hexnumlen (ULONGEST num) |
c906108c SS |
3694 | { |
3695 | int i; | |
3696 | ||
3697 | for (i = 0; num != 0; i++) | |
3698 | num >>= 4; | |
3699 | ||
3700 | return max (i, 1); | |
3701 | } | |
3702 | ||
2df3850c | 3703 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
3704 | |
3705 | static int | |
fba45db2 | 3706 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 3707 | { |
c906108c | 3708 | int len = hexnumlen (num); |
2df3850c JM |
3709 | return hexnumnstr (buf, num, len); |
3710 | } | |
3711 | ||
c906108c | 3712 | |
2df3850c | 3713 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 3714 | |
2df3850c | 3715 | static int |
fba45db2 | 3716 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
3717 | { |
3718 | int i; | |
3719 | ||
3720 | buf[width] = '\0'; | |
3721 | ||
3722 | for (i = width - 1; i >= 0; i--) | |
c906108c | 3723 | { |
c5aa993b | 3724 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
3725 | num >>= 4; |
3726 | } | |
3727 | ||
2df3850c | 3728 | return width; |
c906108c SS |
3729 | } |
3730 | ||
23860348 | 3731 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
3732 | |
3733 | static CORE_ADDR | |
fba45db2 | 3734 | remote_address_masked (CORE_ADDR addr) |
c906108c SS |
3735 | { |
3736 | if (remote_address_size > 0 | |
3737 | && remote_address_size < (sizeof (ULONGEST) * 8)) | |
3738 | { | |
3739 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 3740 | in a ULONGEST variable. */ |
c906108c SS |
3741 | ULONGEST mask = 1; |
3742 | mask = (mask << remote_address_size) - 1; | |
3743 | addr &= mask; | |
3744 | } | |
3745 | return addr; | |
3746 | } | |
3747 | ||
a31ea83d DJ |
3748 | /* Convert BUFFER, binary data at least LEN bytes long, into escaped |
3749 | binary data in OUT_BUF. Set *OUT_LEN to the length of the data | |
3750 | encoded in OUT_BUF, and return the number of bytes in OUT_BUF | |
3751 | (which may be more than *OUT_LEN due to escape characters). The | |
3752 | total number of bytes in the output buffer will be at most | |
3753 | OUT_MAXLEN. */ | |
3754 | ||
3755 | static int | |
3756 | remote_escape_output (const gdb_byte *buffer, int len, | |
3757 | gdb_byte *out_buf, int *out_len, | |
3758 | int out_maxlen) | |
3759 | { | |
3760 | int input_index, output_index; | |
3761 | ||
3762 | output_index = 0; | |
3763 | for (input_index = 0; input_index < len; input_index++) | |
3764 | { | |
3765 | gdb_byte b = buffer[input_index]; | |
3766 | ||
3767 | if (b == '$' || b == '#' || b == '}') | |
3768 | { | |
3769 | /* These must be escaped. */ | |
3770 | if (output_index + 2 > out_maxlen) | |
3771 | break; | |
3772 | out_buf[output_index++] = '}'; | |
3773 | out_buf[output_index++] = b ^ 0x20; | |
3774 | } | |
3775 | else | |
3776 | { | |
3777 | if (output_index + 1 > out_maxlen) | |
3778 | break; | |
3779 | out_buf[output_index++] = b; | |
3780 | } | |
3781 | } | |
3782 | ||
3783 | *out_len = input_index; | |
3784 | return output_index; | |
3785 | } | |
3786 | ||
0876f84a DJ |
3787 | /* Convert BUFFER, escaped data LEN bytes long, into binary data |
3788 | in OUT_BUF. Return the number of bytes written to OUT_BUF. | |
3789 | Raise an error if the total number of bytes exceeds OUT_MAXLEN. | |
3790 | ||
3791 | This function reverses remote_escape_output. It allows more | |
3792 | escaped characters than that function does, in particular because | |
3793 | '*' must be escaped to avoid the run-length encoding processing | |
3794 | in reading packets. */ | |
3795 | ||
3796 | static int | |
3797 | remote_unescape_input (const gdb_byte *buffer, int len, | |
3798 | gdb_byte *out_buf, int out_maxlen) | |
3799 | { | |
3800 | int input_index, output_index; | |
3801 | int escaped; | |
3802 | ||
3803 | output_index = 0; | |
3804 | escaped = 0; | |
3805 | for (input_index = 0; input_index < len; input_index++) | |
3806 | { | |
3807 | gdb_byte b = buffer[input_index]; | |
3808 | ||
3809 | if (output_index + 1 > out_maxlen) | |
3810 | { | |
3811 | warning (_("Received too much data from remote target;" | |
3812 | " ignoring overflow.")); | |
3813 | return output_index; | |
3814 | } | |
3815 | ||
3816 | if (escaped) | |
3817 | { | |
3818 | out_buf[output_index++] = b ^ 0x20; | |
3819 | escaped = 0; | |
3820 | } | |
3821 | else if (b == '}') | |
3822 | escaped = 1; | |
3823 | else | |
3824 | out_buf[output_index++] = b; | |
3825 | } | |
3826 | ||
3827 | if (escaped) | |
3828 | error (_("Unmatched escape character in target response.")); | |
3829 | ||
3830 | return output_index; | |
3831 | } | |
3832 | ||
c906108c SS |
3833 | /* Determine whether the remote target supports binary downloading. |
3834 | This is accomplished by sending a no-op memory write of zero length | |
3835 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
3836 | the whole packet, since many stubs strip the eighth bit and |
3837 | subsequently compute a wrong checksum, which causes real havoc with | |
3838 | remote_write_bytes. | |
7a292a7a | 3839 | |
96baa820 JM |
3840 | NOTE: This can still lose if the serial line is not eight-bit |
3841 | clean. In cases like this, the user should clear "remote | |
23860348 | 3842 | X-packet". */ |
96baa820 | 3843 | |
c906108c | 3844 | static void |
fba45db2 | 3845 | check_binary_download (CORE_ADDR addr) |
c906108c | 3846 | { |
d01949b6 | 3847 | struct remote_state *rs = get_remote_state (); |
24b06219 | 3848 | |
444abaca | 3849 | switch (remote_protocol_packets[PACKET_X].support) |
c906108c | 3850 | { |
96baa820 JM |
3851 | case PACKET_DISABLE: |
3852 | break; | |
3853 | case PACKET_ENABLE: | |
3854 | break; | |
3855 | case PACKET_SUPPORT_UNKNOWN: | |
3856 | { | |
96baa820 | 3857 | char *p; |
802188a7 | 3858 | |
2e9f7625 | 3859 | p = rs->buf; |
96baa820 JM |
3860 | *p++ = 'X'; |
3861 | p += hexnumstr (p, (ULONGEST) addr); | |
3862 | *p++ = ','; | |
3863 | p += hexnumstr (p, (ULONGEST) 0); | |
3864 | *p++ = ':'; | |
3865 | *p = '\0'; | |
802188a7 | 3866 | |
2e9f7625 | 3867 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 3868 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 3869 | |
2e9f7625 | 3870 | if (rs->buf[0] == '\0') |
96baa820 JM |
3871 | { |
3872 | if (remote_debug) | |
3873 | fprintf_unfiltered (gdb_stdlog, | |
3874 | "binary downloading NOT suppported by target\n"); | |
444abaca | 3875 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
3876 | } |
3877 | else | |
3878 | { | |
3879 | if (remote_debug) | |
3880 | fprintf_unfiltered (gdb_stdlog, | |
3881 | "binary downloading suppported by target\n"); | |
444abaca | 3882 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
3883 | } |
3884 | break; | |
3885 | } | |
c906108c SS |
3886 | } |
3887 | } | |
3888 | ||
3889 | /* Write memory data directly to the remote machine. | |
3890 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 3891 | HEADER is the starting part of the packet. |
c906108c SS |
3892 | MEMADDR is the address in the remote memory space. |
3893 | MYADDR is the address of the buffer in our space. | |
3894 | LEN is the number of bytes. | |
a76d924d DJ |
3895 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
3896 | should send data as binary ('X'), or hex-encoded ('M'). | |
3897 | ||
3898 | The function creates packet of the form | |
3899 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
3900 | ||
3901 | where encoding of <DATA> is termined by PACKET_FORMAT. | |
3902 | ||
3903 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
3904 | are omitted. | |
3905 | ||
3906 | Returns the number of bytes transferred, or 0 (setting errno) for | |
23860348 | 3907 | error. Only transfer a single packet. */ |
c906108c | 3908 | |
a76d924d DJ |
3909 | static int |
3910 | remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, | |
3911 | const gdb_byte *myaddr, int len, | |
3912 | char packet_format, int use_length) | |
c906108c | 3913 | { |
6d820c5c | 3914 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 3915 | char *p; |
a76d924d DJ |
3916 | char *plen = NULL; |
3917 | int plenlen = 0; | |
917317f4 JM |
3918 | int todo; |
3919 | int nr_bytes; | |
a257b5bb | 3920 | int payload_size; |
6765f3e5 | 3921 | int payload_length; |
a76d924d DJ |
3922 | int header_length; |
3923 | ||
3924 | if (packet_format != 'X' && packet_format != 'M') | |
3925 | internal_error (__FILE__, __LINE__, | |
3926 | "remote_write_bytes_aux: bad packet format"); | |
c906108c | 3927 | |
b2182ed2 DJ |
3928 | /* Should this be the selected frame? */ |
3929 | gdbarch_remote_translate_xfer_address (current_gdbarch, | |
3930 | current_regcache, | |
3931 | memaddr, len, | |
3932 | &memaddr, &len); | |
3933 | ||
3934 | if (len <= 0) | |
3935 | return 0; | |
3936 | ||
3de11b2e | 3937 | payload_size = get_memory_write_packet_size (); |
2bc416ba | 3938 | |
6d820c5c DJ |
3939 | /* The packet buffer will be large enough for the payload; |
3940 | get_memory_packet_size ensures this. */ | |
a76d924d | 3941 | rs->buf[0] = '\0'; |
c906108c | 3942 | |
a257b5bb | 3943 | /* Compute the size of the actual payload by subtracting out the |
3de11b2e NS |
3944 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". |
3945 | */ | |
a76d924d DJ |
3946 | payload_size -= strlen ("$,:#NN"); |
3947 | if (!use_length) | |
3948 | /* The comma won't be used. */ | |
3949 | payload_size += 1; | |
3950 | header_length = strlen (header); | |
3951 | payload_size -= header_length; | |
3de11b2e | 3952 | payload_size -= hexnumlen (memaddr); |
c906108c | 3953 | |
a76d924d | 3954 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 3955 | |
a76d924d DJ |
3956 | strcat (rs->buf, header); |
3957 | p = rs->buf + strlen (header); | |
3958 | ||
3959 | /* Compute a best guess of the number of bytes actually transfered. */ | |
3960 | if (packet_format == 'X') | |
c906108c | 3961 | { |
23860348 | 3962 | /* Best guess at number of bytes that will fit. */ |
a257b5bb | 3963 | todo = min (len, payload_size); |
a76d924d DJ |
3964 | if (use_length) |
3965 | payload_size -= hexnumlen (todo); | |
3de11b2e | 3966 | todo = min (todo, payload_size); |
a76d924d DJ |
3967 | } |
3968 | else | |
3969 | { | |
23860348 | 3970 | /* Num bytes that will fit. */ |
a257b5bb | 3971 | todo = min (len, payload_size / 2); |
a76d924d DJ |
3972 | if (use_length) |
3973 | payload_size -= hexnumlen (todo); | |
3de11b2e | 3974 | todo = min (todo, payload_size / 2); |
917317f4 | 3975 | } |
a76d924d | 3976 | |
3de11b2e NS |
3977 | if (todo <= 0) |
3978 | internal_error (__FILE__, __LINE__, | |
3979 | _("minumum packet size too small to write data")); | |
802188a7 | 3980 | |
6765f3e5 DJ |
3981 | /* If we already need another packet, then try to align the end |
3982 | of this packet to a useful boundary. */ | |
3983 | if (todo > 2 * REMOTE_ALIGN_WRITES && todo < len) | |
3984 | todo = ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
3985 | ||
a257b5bb | 3986 | /* Append "<memaddr>". */ |
917317f4 JM |
3987 | memaddr = remote_address_masked (memaddr); |
3988 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 3989 | |
a76d924d DJ |
3990 | if (use_length) |
3991 | { | |
3992 | /* Append ",". */ | |
3993 | *p++ = ','; | |
802188a7 | 3994 | |
a76d924d DJ |
3995 | /* Append <len>. Retain the location/size of <len>. It may need to |
3996 | be adjusted once the packet body has been created. */ | |
3997 | plen = p; | |
3998 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
3999 | p += plenlen; | |
4000 | } | |
a257b5bb AC |
4001 | |
4002 | /* Append ":". */ | |
917317f4 JM |
4003 | *p++ = ':'; |
4004 | *p = '\0'; | |
802188a7 | 4005 | |
a257b5bb | 4006 | /* Append the packet body. */ |
a76d924d | 4007 | if (packet_format == 'X') |
917317f4 | 4008 | { |
917317f4 JM |
4009 | /* Binary mode. Send target system values byte by byte, in |
4010 | increasing byte addresses. Only escape certain critical | |
4011 | characters. */ | |
6765f3e5 DJ |
4012 | payload_length = remote_escape_output (myaddr, todo, p, &nr_bytes, |
4013 | payload_size); | |
4014 | ||
4015 | /* If not all TODO bytes fit, then we'll need another packet. Make | |
9b7194bc DJ |
4016 | a second try to keep the end of the packet aligned. Don't do |
4017 | this if the packet is tiny. */ | |
4018 | if (nr_bytes < todo && nr_bytes > 2 * REMOTE_ALIGN_WRITES) | |
6765f3e5 DJ |
4019 | { |
4020 | int new_nr_bytes; | |
4021 | ||
4022 | new_nr_bytes = (((memaddr + nr_bytes) & ~(REMOTE_ALIGN_WRITES - 1)) | |
4023 | - memaddr); | |
4024 | if (new_nr_bytes != nr_bytes) | |
4025 | payload_length = remote_escape_output (myaddr, new_nr_bytes, | |
4026 | p, &nr_bytes, | |
4027 | payload_size); | |
4028 | } | |
4029 | ||
4030 | p += payload_length; | |
a76d924d | 4031 | if (use_length && nr_bytes < todo) |
c906108c | 4032 | { |
802188a7 | 4033 | /* Escape chars have filled up the buffer prematurely, |
917317f4 JM |
4034 | and we have actually sent fewer bytes than planned. |
4035 | Fix-up the length field of the packet. Use the same | |
4036 | number of characters as before. */ | |
917317f4 JM |
4037 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); |
4038 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 4039 | } |
a76d924d DJ |
4040 | } |
4041 | else | |
4042 | { | |
917317f4 JM |
4043 | /* Normal mode: Send target system values byte by byte, in |
4044 | increasing byte addresses. Each byte is encoded as a two hex | |
4045 | value. */ | |
2644f393 | 4046 | nr_bytes = bin2hex (myaddr, p, todo); |
aa6c0017 | 4047 | p += 2 * nr_bytes; |
c906108c | 4048 | } |
802188a7 | 4049 | |
2e9f7625 | 4050 | putpkt_binary (rs->buf, (int) (p - rs->buf)); |
6d820c5c | 4051 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 4052 | |
2e9f7625 | 4053 | if (rs->buf[0] == 'E') |
917317f4 JM |
4054 | { |
4055 | /* There is no correspondance between what the remote protocol | |
4056 | uses for errors and errno codes. We would like a cleaner way | |
4057 | of representing errors (big enough to include errno codes, | |
4058 | bfd_error codes, and others). But for now just return EIO. */ | |
4059 | errno = EIO; | |
4060 | return 0; | |
4061 | } | |
802188a7 | 4062 | |
23860348 MS |
4063 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send |
4064 | fewer bytes than we'd planned. */ | |
917317f4 | 4065 | return nr_bytes; |
c906108c SS |
4066 | } |
4067 | ||
a76d924d DJ |
4068 | /* Write memory data directly to the remote machine. |
4069 | This does not inform the data cache; the data cache uses this. | |
4070 | MEMADDR is the address in the remote memory space. | |
4071 | MYADDR is the address of the buffer in our space. | |
4072 | LEN is the number of bytes. | |
4073 | ||
4074 | Returns number of bytes transferred, or 0 (setting errno) for | |
4075 | error. Only transfer a single packet. */ | |
4076 | ||
4077 | int | |
4078 | remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, int len) | |
4079 | { | |
4080 | char *packet_format = 0; | |
4081 | ||
4082 | /* Check whether the target supports binary download. */ | |
4083 | check_binary_download (memaddr); | |
4084 | ||
4085 | switch (remote_protocol_packets[PACKET_X].support) | |
4086 | { | |
4087 | case PACKET_ENABLE: | |
4088 | packet_format = "X"; | |
4089 | break; | |
4090 | case PACKET_DISABLE: | |
4091 | packet_format = "M"; | |
4092 | break; | |
4093 | case PACKET_SUPPORT_UNKNOWN: | |
4094 | internal_error (__FILE__, __LINE__, | |
4095 | _("remote_write_bytes: bad internal state")); | |
4096 | default: | |
4097 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
4098 | } | |
4099 | ||
4100 | return remote_write_bytes_aux (packet_format, | |
4101 | memaddr, myaddr, len, packet_format[0], 1); | |
4102 | } | |
4103 | ||
c906108c SS |
4104 | /* Read memory data directly from the remote machine. |
4105 | This does not use the data cache; the data cache uses this. | |
4106 | MEMADDR is the address in the remote memory space. | |
4107 | MYADDR is the address of the buffer in our space. | |
4108 | LEN is the number of bytes. | |
4109 | ||
4110 | Returns number of bytes transferred, or 0 for error. */ | |
4111 | ||
917317f4 JM |
4112 | /* NOTE: cagney/1999-10-18: This function (and its siblings in other |
4113 | remote targets) shouldn't attempt to read the entire buffer. | |
4114 | Instead it should read a single packet worth of data and then | |
4115 | return the byte size of that packet to the caller. The caller (its | |
4116 | caller and its callers caller ;-) already contains code for | |
23860348 | 4117 | handling partial reads. */ |
917317f4 | 4118 | |
449092f6 | 4119 | int |
cfd77fa1 | 4120 | remote_read_bytes (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
c906108c | 4121 | { |
6d820c5c | 4122 | struct remote_state *rs = get_remote_state (); |
23860348 | 4123 | int max_buf_size; /* Max size of packet output buffer. */ |
c906108c SS |
4124 | int origlen; |
4125 | ||
b2182ed2 DJ |
4126 | /* Should this be the selected frame? */ |
4127 | gdbarch_remote_translate_xfer_address (current_gdbarch, | |
4128 | current_regcache, | |
4129 | memaddr, len, | |
4130 | &memaddr, &len); | |
4131 | ||
4132 | if (len <= 0) | |
4133 | return 0; | |
4134 | ||
11cf8741 | 4135 | max_buf_size = get_memory_read_packet_size (); |
6d820c5c DJ |
4136 | /* The packet buffer will be large enough for the payload; |
4137 | get_memory_packet_size ensures this. */ | |
c906108c SS |
4138 | |
4139 | origlen = len; | |
4140 | while (len > 0) | |
4141 | { | |
c906108c SS |
4142 | char *p; |
4143 | int todo; | |
4144 | int i; | |
4145 | ||
c5aa993b | 4146 | todo = min (len, max_buf_size / 2); /* num bytes that will fit */ |
c906108c SS |
4147 | |
4148 | /* construct "m"<memaddr>","<len>" */ | |
2e9f7625 | 4149 | /* sprintf (rs->buf, "m%lx,%x", (unsigned long) memaddr, todo); */ |
c906108c | 4150 | memaddr = remote_address_masked (memaddr); |
2e9f7625 | 4151 | p = rs->buf; |
c906108c SS |
4152 | *p++ = 'm'; |
4153 | p += hexnumstr (p, (ULONGEST) memaddr); | |
4154 | *p++ = ','; | |
4155 | p += hexnumstr (p, (ULONGEST) todo); | |
4156 | *p = '\0'; | |
4157 | ||
2e9f7625 | 4158 | putpkt (rs->buf); |
6d820c5c | 4159 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 4160 | |
2e9f7625 DJ |
4161 | if (rs->buf[0] == 'E' |
4162 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
4163 | && rs->buf[3] == '\0') | |
c906108c | 4164 | { |
23860348 MS |
4165 | /* There is no correspondance between what the remote |
4166 | protocol uses for errors and errno codes. We would like | |
4167 | a cleaner way of representing errors (big enough to | |
4168 | include errno codes, bfd_error codes, and others). But | |
4169 | for now just return EIO. */ | |
c906108c SS |
4170 | errno = EIO; |
4171 | return 0; | |
4172 | } | |
4173 | ||
c5aa993b JM |
4174 | /* Reply describes memory byte by byte, |
4175 | each byte encoded as two hex characters. */ | |
c906108c | 4176 | |
2e9f7625 | 4177 | p = rs->buf; |
30559e10 | 4178 | if ((i = hex2bin (p, myaddr, todo)) < todo) |
c906108c | 4179 | { |
30559e10 | 4180 | /* Reply is short. This means that we were able to read |
23860348 | 4181 | only part of what we wanted to. */ |
30559e10 | 4182 | return i + (origlen - len); |
c906108c SS |
4183 | } |
4184 | myaddr += todo; | |
4185 | memaddr += todo; | |
4186 | len -= todo; | |
4187 | } | |
4188 | return origlen; | |
4189 | } | |
4190 | \f | |
4191 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
23860348 MS |
4192 | transferring to or from debugger address BUFFER. Write to inferior |
4193 | if SHOULD_WRITE is nonzero. Returns length of data written or | |
4194 | read; 0 for error. TARGET is unused. */ | |
392a587b | 4195 | |
c906108c | 4196 | static int |
961cb7b5 | 4197 | remote_xfer_memory (CORE_ADDR mem_addr, gdb_byte *buffer, int mem_len, |
0a65a603 | 4198 | int should_write, struct mem_attrib *attrib, |
29e57380 | 4199 | struct target_ops *target) |
c906108c | 4200 | { |
4930751a C |
4201 | int res; |
4202 | ||
4930751a | 4203 | if (should_write) |
b2182ed2 | 4204 | res = remote_write_bytes (mem_addr, buffer, mem_len); |
4930751a | 4205 | else |
b2182ed2 | 4206 | res = remote_read_bytes (mem_addr, buffer, mem_len); |
4930751a C |
4207 | |
4208 | return res; | |
c906108c SS |
4209 | } |
4210 | ||
a76d924d DJ |
4211 | /* Sends a packet with content determined by the printf format string |
4212 | FORMAT and the remaining arguments, then gets the reply. Returns | |
4213 | whether the packet was a success, a failure, or unknown. */ | |
4214 | ||
4215 | enum packet_result | |
4216 | remote_send_printf (const char *format, ...) | |
4217 | { | |
4218 | struct remote_state *rs = get_remote_state (); | |
4219 | int max_size = get_remote_packet_size (); | |
4220 | ||
4221 | va_list ap; | |
4222 | va_start (ap, format); | |
4223 | ||
4224 | rs->buf[0] = '\0'; | |
4225 | if (vsnprintf (rs->buf, max_size, format, ap) >= max_size) | |
4226 | internal_error (__FILE__, __LINE__, "Too long remote packet."); | |
4227 | ||
4228 | if (putpkt (rs->buf) < 0) | |
4229 | error (_("Communication problem with target.")); | |
4230 | ||
4231 | rs->buf[0] = '\0'; | |
4232 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4233 | ||
4234 | return packet_check_result (rs->buf); | |
4235 | } | |
4236 | ||
4237 | static void | |
4238 | restore_remote_timeout (void *p) | |
4239 | { | |
4240 | int value = *(int *)p; | |
4241 | remote_timeout = value; | |
4242 | } | |
4243 | ||
4244 | /* Flash writing can take quite some time. We'll set | |
4245 | effectively infinite timeout for flash operations. | |
4246 | In future, we'll need to decide on a better approach. */ | |
4247 | static const int remote_flash_timeout = 1000; | |
4248 | ||
4249 | static void | |
4250 | remote_flash_erase (struct target_ops *ops, | |
4251 | ULONGEST address, LONGEST length) | |
4252 | { | |
4253 | int saved_remote_timeout = remote_timeout; | |
4254 | enum packet_result ret; | |
4255 | ||
4256 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
4257 | &saved_remote_timeout); | |
4258 | remote_timeout = remote_flash_timeout; | |
4259 | ||
4260 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
4261 | paddr (address), | |
4262 | phex (length, 4)); | |
4263 | switch (ret) | |
4264 | { | |
4265 | case PACKET_UNKNOWN: | |
4266 | error (_("Remote target does not support flash erase")); | |
4267 | case PACKET_ERROR: | |
4268 | error (_("Error erasing flash with vFlashErase packet")); | |
4269 | default: | |
4270 | break; | |
4271 | } | |
4272 | ||
4273 | do_cleanups (back_to); | |
4274 | } | |
4275 | ||
4276 | static LONGEST | |
4277 | remote_flash_write (struct target_ops *ops, | |
4278 | ULONGEST address, LONGEST length, | |
4279 | const gdb_byte *data) | |
4280 | { | |
4281 | int saved_remote_timeout = remote_timeout; | |
4282 | int ret; | |
4283 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
4284 | &saved_remote_timeout); | |
4285 | ||
4286 | remote_timeout = remote_flash_timeout; | |
4287 | ret = remote_write_bytes_aux ("vFlashWrite:", address, data, length, 'X', 0); | |
4288 | do_cleanups (back_to); | |
4289 | ||
4290 | return ret; | |
4291 | } | |
4292 | ||
4293 | static void | |
4294 | remote_flash_done (struct target_ops *ops) | |
4295 | { | |
4296 | int saved_remote_timeout = remote_timeout; | |
4297 | int ret; | |
4298 | struct cleanup *back_to = make_cleanup (restore_remote_timeout, | |
4299 | &saved_remote_timeout); | |
4300 | ||
4301 | remote_timeout = remote_flash_timeout; | |
4302 | ret = remote_send_printf ("vFlashDone"); | |
4303 | do_cleanups (back_to); | |
4304 | ||
4305 | switch (ret) | |
4306 | { | |
4307 | case PACKET_UNKNOWN: | |
4308 | error (_("Remote target does not support vFlashDone")); | |
4309 | case PACKET_ERROR: | |
4310 | error (_("Error finishing flash operation")); | |
4311 | default: | |
4312 | break; | |
4313 | } | |
4314 | } | |
4315 | ||
c906108c | 4316 | static void |
fba45db2 | 4317 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
4318 | { |
4319 | puts_filtered ("Debugging a target over a serial line.\n"); | |
4320 | } | |
4321 | \f | |
4322 | /* Stuff for dealing with the packets which are part of this protocol. | |
4323 | See comment at top of file for details. */ | |
4324 | ||
0876f84a | 4325 | /* Read a single character from the remote end. */ |
c906108c SS |
4326 | |
4327 | static int | |
fba45db2 | 4328 | readchar (int timeout) |
c906108c SS |
4329 | { |
4330 | int ch; | |
4331 | ||
2cd58942 | 4332 | ch = serial_readchar (remote_desc, timeout); |
c906108c | 4333 | |
2acceee2 | 4334 | if (ch >= 0) |
0876f84a | 4335 | return ch; |
2acceee2 JM |
4336 | |
4337 | switch ((enum serial_rc) ch) | |
c906108c SS |
4338 | { |
4339 | case SERIAL_EOF: | |
2acceee2 | 4340 | target_mourn_inferior (); |
8a3fe4f8 | 4341 | error (_("Remote connection closed")); |
2acceee2 | 4342 | /* no return */ |
c906108c | 4343 | case SERIAL_ERROR: |
e2e0b3e5 | 4344 | perror_with_name (_("Remote communication error")); |
2acceee2 | 4345 | /* no return */ |
c906108c | 4346 | case SERIAL_TIMEOUT: |
2acceee2 | 4347 | break; |
c906108c | 4348 | } |
2acceee2 | 4349 | return ch; |
c906108c SS |
4350 | } |
4351 | ||
6d820c5c DJ |
4352 | /* Send the command in *BUF to the remote machine, and read the reply |
4353 | into *BUF. Report an error if we get an error reply. Resize | |
4354 | *BUF using xrealloc if necessary to hold the result, and update | |
4355 | *SIZEOF_BUF. */ | |
c906108c SS |
4356 | |
4357 | static void | |
6d820c5c DJ |
4358 | remote_send (char **buf, |
4359 | long *sizeof_buf) | |
c906108c | 4360 | { |
6d820c5c | 4361 | putpkt (*buf); |
c2d11a7d | 4362 | getpkt (buf, sizeof_buf, 0); |
c906108c | 4363 | |
6d820c5c DJ |
4364 | if ((*buf)[0] == 'E') |
4365 | error (_("Remote failure reply: %s"), *buf); | |
c906108c SS |
4366 | } |
4367 | ||
4368 | /* Display a null-terminated packet on stdout, for debugging, using C | |
4369 | string notation. */ | |
4370 | ||
4371 | static void | |
fba45db2 | 4372 | print_packet (char *buf) |
c906108c SS |
4373 | { |
4374 | puts_filtered ("\""); | |
43e526b9 | 4375 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
4376 | puts_filtered ("\""); |
4377 | } | |
4378 | ||
4379 | int | |
fba45db2 | 4380 | putpkt (char *buf) |
c906108c SS |
4381 | { |
4382 | return putpkt_binary (buf, strlen (buf)); | |
4383 | } | |
4384 | ||
4385 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 4386 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 4387 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
4388 | and for a possible /0 if we are debugging (remote_debug) and want |
4389 | to print the sent packet as a string. */ | |
c906108c SS |
4390 | |
4391 | static int | |
fba45db2 | 4392 | putpkt_binary (char *buf, int cnt) |
c906108c SS |
4393 | { |
4394 | int i; | |
4395 | unsigned char csum = 0; | |
11cf8741 | 4396 | char *buf2 = alloca (cnt + 6); |
085dd6e6 | 4397 | |
c906108c SS |
4398 | int ch; |
4399 | int tcount = 0; | |
4400 | char *p; | |
4401 | ||
4402 | /* Copy the packet into buffer BUF2, encapsulating it | |
4403 | and giving it a checksum. */ | |
4404 | ||
c906108c SS |
4405 | p = buf2; |
4406 | *p++ = '$'; | |
4407 | ||
4408 | for (i = 0; i < cnt; i++) | |
4409 | { | |
4410 | csum += buf[i]; | |
4411 | *p++ = buf[i]; | |
4412 | } | |
4413 | *p++ = '#'; | |
4414 | *p++ = tohex ((csum >> 4) & 0xf); | |
4415 | *p++ = tohex (csum & 0xf); | |
4416 | ||
4417 | /* Send it over and over until we get a positive ack. */ | |
4418 | ||
4419 | while (1) | |
4420 | { | |
4421 | int started_error_output = 0; | |
4422 | ||
4423 | if (remote_debug) | |
4424 | { | |
4425 | *p = '\0'; | |
43e526b9 JM |
4426 | fprintf_unfiltered (gdb_stdlog, "Sending packet: "); |
4427 | fputstrn_unfiltered (buf2, p - buf2, 0, gdb_stdlog); | |
d4f3574e | 4428 | fprintf_unfiltered (gdb_stdlog, "..."); |
0f71a2f6 | 4429 | gdb_flush (gdb_stdlog); |
c906108c | 4430 | } |
2cd58942 | 4431 | if (serial_write (remote_desc, buf2, p - buf2)) |
e2e0b3e5 | 4432 | perror_with_name (_("putpkt: write failed")); |
c906108c | 4433 | |
23860348 | 4434 | /* Read until either a timeout occurs (-2) or '+' is read. */ |
c906108c SS |
4435 | while (1) |
4436 | { | |
4437 | ch = readchar (remote_timeout); | |
4438 | ||
c5aa993b | 4439 | if (remote_debug) |
c906108c SS |
4440 | { |
4441 | switch (ch) | |
4442 | { | |
4443 | case '+': | |
1216fa2c | 4444 | case '-': |
c906108c SS |
4445 | case SERIAL_TIMEOUT: |
4446 | case '$': | |
4447 | if (started_error_output) | |
4448 | { | |
4449 | putchar_unfiltered ('\n'); | |
4450 | started_error_output = 0; | |
4451 | } | |
4452 | } | |
4453 | } | |
4454 | ||
4455 | switch (ch) | |
4456 | { | |
4457 | case '+': | |
4458 | if (remote_debug) | |
0f71a2f6 | 4459 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 4460 | return 1; |
1216fa2c AC |
4461 | case '-': |
4462 | if (remote_debug) | |
4463 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
c906108c | 4464 | case SERIAL_TIMEOUT: |
c5aa993b | 4465 | tcount++; |
c906108c SS |
4466 | if (tcount > 3) |
4467 | return 0; | |
23860348 | 4468 | break; /* Retransmit buffer. */ |
c906108c SS |
4469 | case '$': |
4470 | { | |
40e3f985 | 4471 | if (remote_debug) |
2bc416ba | 4472 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 4473 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
4474 | /* It's probably an old response sent because an ACK |
4475 | was lost. Gobble up the packet and ack it so it | |
4476 | doesn't get retransmitted when we resend this | |
4477 | packet. */ | |
6d820c5c | 4478 | skip_frame (); |
d6f7abdf | 4479 | serial_write (remote_desc, "+", 1); |
23860348 | 4480 | continue; /* Now, go look for +. */ |
c906108c SS |
4481 | } |
4482 | default: | |
4483 | if (remote_debug) | |
4484 | { | |
4485 | if (!started_error_output) | |
4486 | { | |
4487 | started_error_output = 1; | |
0f71a2f6 | 4488 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 4489 | } |
0f71a2f6 | 4490 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
4491 | } |
4492 | continue; | |
4493 | } | |
23860348 | 4494 | break; /* Here to retransmit. */ |
c906108c SS |
4495 | } |
4496 | ||
4497 | #if 0 | |
4498 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
4499 | able to get out next time we call QUIT, without anything as |
4500 | violent as interrupt_query. If we want to provide a way out of | |
4501 | here without getting to the next QUIT, it should be based on | |
4502 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
4503 | if (quit_flag) |
4504 | { | |
4505 | quit_flag = 0; | |
4506 | interrupt_query (); | |
4507 | } | |
4508 | #endif | |
4509 | } | |
4510 | } | |
4511 | ||
6d820c5c DJ |
4512 | /* Come here after finding the start of a frame when we expected an |
4513 | ack. Do our best to discard the rest of this packet. */ | |
4514 | ||
4515 | static void | |
4516 | skip_frame (void) | |
4517 | { | |
4518 | int c; | |
4519 | ||
4520 | while (1) | |
4521 | { | |
4522 | c = readchar (remote_timeout); | |
4523 | switch (c) | |
4524 | { | |
4525 | case SERIAL_TIMEOUT: | |
4526 | /* Nothing we can do. */ | |
4527 | return; | |
4528 | case '#': | |
4529 | /* Discard the two bytes of checksum and stop. */ | |
4530 | c = readchar (remote_timeout); | |
4531 | if (c >= 0) | |
4532 | c = readchar (remote_timeout); | |
4533 | ||
4534 | return; | |
4535 | case '*': /* Run length encoding. */ | |
4536 | /* Discard the repeat count. */ | |
4537 | c = readchar (remote_timeout); | |
4538 | if (c < 0) | |
4539 | return; | |
4540 | break; | |
4541 | default: | |
4542 | /* A regular character. */ | |
4543 | break; | |
4544 | } | |
4545 | } | |
4546 | } | |
4547 | ||
c906108c | 4548 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
4549 | into *BUF, verifying the checksum, length, and handling run-length |
4550 | compression. NUL terminate the buffer. If there is not enough room, | |
4551 | expand *BUF using xrealloc. | |
c906108c | 4552 | |
c2d11a7d JM |
4553 | Returns -1 on error, number of characters in buffer (ignoring the |
4554 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 4555 | SERIAL status indications). */ |
c2d11a7d JM |
4556 | |
4557 | static long | |
6d820c5c DJ |
4558 | read_frame (char **buf_p, |
4559 | long *sizeof_buf) | |
c906108c SS |
4560 | { |
4561 | unsigned char csum; | |
c2d11a7d | 4562 | long bc; |
c906108c | 4563 | int c; |
6d820c5c | 4564 | char *buf = *buf_p; |
c906108c SS |
4565 | |
4566 | csum = 0; | |
c2d11a7d | 4567 | bc = 0; |
c906108c SS |
4568 | |
4569 | while (1) | |
4570 | { | |
4571 | c = readchar (remote_timeout); | |
c906108c SS |
4572 | switch (c) |
4573 | { | |
4574 | case SERIAL_TIMEOUT: | |
4575 | if (remote_debug) | |
0f71a2f6 | 4576 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 4577 | return -1; |
c906108c SS |
4578 | case '$': |
4579 | if (remote_debug) | |
0f71a2f6 JM |
4580 | fputs_filtered ("Saw new packet start in middle of old one\n", |
4581 | gdb_stdlog); | |
23860348 | 4582 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
4583 | case '#': |
4584 | { | |
4585 | unsigned char pktcsum; | |
e1b09194 AC |
4586 | int check_0 = 0; |
4587 | int check_1 = 0; | |
c906108c | 4588 | |
c2d11a7d | 4589 | buf[bc] = '\0'; |
c906108c | 4590 | |
e1b09194 AC |
4591 | check_0 = readchar (remote_timeout); |
4592 | if (check_0 >= 0) | |
4593 | check_1 = readchar (remote_timeout); | |
802188a7 | 4594 | |
e1b09194 AC |
4595 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
4596 | { | |
4597 | if (remote_debug) | |
2bc416ba | 4598 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 4599 | gdb_stdlog); |
e1b09194 AC |
4600 | return -1; |
4601 | } | |
4602 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
4603 | { |
4604 | if (remote_debug) | |
2bc416ba | 4605 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 4606 | gdb_stdlog); |
40e3f985 FN |
4607 | return -1; |
4608 | } | |
c906108c | 4609 | |
e1b09194 | 4610 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 4611 | if (csum == pktcsum) |
c2d11a7d | 4612 | return bc; |
c906108c | 4613 | |
c5aa993b | 4614 | if (remote_debug) |
c906108c | 4615 | { |
0f71a2f6 | 4616 | fprintf_filtered (gdb_stdlog, |
c5aa993b | 4617 | "Bad checksum, sentsum=0x%x, csum=0x%x, buf=", |
0f71a2f6 | 4618 | pktcsum, csum); |
0876f84a | 4619 | fputstrn_filtered (buf, bc, 0, gdb_stdlog); |
0f71a2f6 | 4620 | fputs_filtered ("\n", gdb_stdlog); |
c906108c | 4621 | } |
c2d11a7d | 4622 | /* Number of characters in buffer ignoring trailing |
23860348 | 4623 | NULL. */ |
c2d11a7d | 4624 | return -1; |
c906108c | 4625 | } |
23860348 | 4626 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
4627 | { |
4628 | int repeat; | |
4629 | csum += c; | |
c906108c | 4630 | |
b4501125 AC |
4631 | c = readchar (remote_timeout); |
4632 | csum += c; | |
23860348 | 4633 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 4634 | |
23860348 | 4635 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 4636 | |
6d820c5c | 4637 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 4638 | { |
6d820c5c DJ |
4639 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
4640 | { | |
4641 | /* Make some more room in the buffer. */ | |
4642 | *sizeof_buf += repeat; | |
4643 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
4644 | buf = *buf_p; | |
4645 | } | |
4646 | ||
c2d11a7d JM |
4647 | memset (&buf[bc], buf[bc - 1], repeat); |
4648 | bc += repeat; | |
c2c6d25f JM |
4649 | continue; |
4650 | } | |
4651 | ||
c2d11a7d | 4652 | buf[bc] = '\0'; |
6d820c5c | 4653 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 4654 | return -1; |
c2c6d25f | 4655 | } |
c906108c | 4656 | default: |
6d820c5c | 4657 | if (bc >= *sizeof_buf - 1) |
c906108c | 4658 | { |
6d820c5c DJ |
4659 | /* Make some more room in the buffer. */ |
4660 | *sizeof_buf *= 2; | |
4661 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
4662 | buf = *buf_p; | |
c906108c SS |
4663 | } |
4664 | ||
6d820c5c DJ |
4665 | buf[bc++] = c; |
4666 | csum += c; | |
4667 | continue; | |
c906108c SS |
4668 | } |
4669 | } | |
4670 | } | |
4671 | ||
4672 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
4673 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
4674 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
4675 | rather than timing out; this is used (in synchronous mode) to wait | |
4676 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
4677 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
4678 | don't have to change all the calls to getpkt to deal with the | |
4679 | return value, because at the moment I don't know what the right | |
23860348 | 4680 | thing to do it for those. */ |
c906108c | 4681 | void |
6d820c5c DJ |
4682 | getpkt (char **buf, |
4683 | long *sizeof_buf, | |
c2d11a7d | 4684 | int forever) |
d9fcf2fb JM |
4685 | { |
4686 | int timed_out; | |
4687 | ||
4688 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
4689 | } | |
4690 | ||
4691 | ||
4692 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
4693 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
4694 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
4695 | rather than timing out; this is used (in synchronous mode) to wait | |
4696 | for a target that is is executing user code to stop. If FOREVER == | |
4697 | 0, this function is allowed to time out gracefully and return an | |
0876f84a DJ |
4698 | indication of this to the caller. Otherwise return the number |
4699 | of bytes read. */ | |
3172dc30 | 4700 | static int |
6d820c5c | 4701 | getpkt_sane (char **buf, long *sizeof_buf, int forever) |
c906108c SS |
4702 | { |
4703 | int c; | |
4704 | int tries; | |
4705 | int timeout; | |
4706 | int val; | |
4707 | ||
6d820c5c | 4708 | strcpy (*buf, "timeout"); |
c906108c SS |
4709 | |
4710 | if (forever) | |
4711 | { | |
c906108c | 4712 | timeout = watchdog > 0 ? watchdog : -1; |
c906108c SS |
4713 | } |
4714 | ||
4715 | else | |
4716 | timeout = remote_timeout; | |
4717 | ||
4718 | #define MAX_TRIES 3 | |
4719 | ||
4720 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
4721 | { | |
4722 | /* This can loop forever if the remote side sends us characters | |
23860348 MS |
4723 | continuously, but if it pauses, we'll get a zero from |
4724 | readchar because of timeout. Then we'll count that as a | |
4725 | retry. */ | |
c906108c | 4726 | |
23860348 MS |
4727 | /* Note that we will only wait forever prior to the start of a |
4728 | packet. After that, we expect characters to arrive at a | |
4729 | brisk pace. They should show up within remote_timeout | |
4730 | intervals. */ | |
c906108c SS |
4731 | |
4732 | do | |
4733 | { | |
4734 | c = readchar (timeout); | |
4735 | ||
4736 | if (c == SERIAL_TIMEOUT) | |
4737 | { | |
23860348 | 4738 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 4739 | { |
2acceee2 | 4740 | QUIT; |
c906108c | 4741 | target_mourn_inferior (); |
8a3fe4f8 | 4742 | error (_("Watchdog has expired. Target detached.")); |
c906108c | 4743 | } |
c906108c | 4744 | if (remote_debug) |
0f71a2f6 | 4745 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c SS |
4746 | goto retry; |
4747 | } | |
4748 | } | |
4749 | while (c != '$'); | |
4750 | ||
4751 | /* We've found the start of a packet, now collect the data. */ | |
4752 | ||
c2d11a7d | 4753 | val = read_frame (buf, sizeof_buf); |
c906108c | 4754 | |
c2d11a7d | 4755 | if (val >= 0) |
c906108c SS |
4756 | { |
4757 | if (remote_debug) | |
43e526b9 JM |
4758 | { |
4759 | fprintf_unfiltered (gdb_stdlog, "Packet received: "); | |
0876f84a | 4760 | fputstrn_unfiltered (*buf, val, 0, gdb_stdlog); |
43e526b9 JM |
4761 | fprintf_unfiltered (gdb_stdlog, "\n"); |
4762 | } | |
2cd58942 | 4763 | serial_write (remote_desc, "+", 1); |
0876f84a | 4764 | return val; |
c906108c SS |
4765 | } |
4766 | ||
4767 | /* Try the whole thing again. */ | |
4768 | retry: | |
2cd58942 | 4769 | serial_write (remote_desc, "-", 1); |
c906108c SS |
4770 | } |
4771 | ||
2bc416ba | 4772 | /* We have tried hard enough, and just can't receive the packet. |
23860348 | 4773 | Give up. */ |
c906108c | 4774 | |
a3f17187 | 4775 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); |
2cd58942 | 4776 | serial_write (remote_desc, "+", 1); |
0876f84a | 4777 | return -1; |
c906108c SS |
4778 | } |
4779 | \f | |
4780 | static void | |
fba45db2 | 4781 | remote_kill (void) |
c906108c SS |
4782 | { |
4783 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4784 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4785 | if (kill_kludge) | |
4786 | { | |
4787 | kill_kludge = 0; | |
4788 | target_mourn_inferior (); | |
4789 | return; | |
4790 | } | |
4791 | ||
4792 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
4793 | speaking terms with the remote system. */ | |
c5aa993b | 4794 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
c906108c SS |
4795 | |
4796 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4797 | we do or not. For the existing stubs, kill is a noop. */ | |
4798 | target_mourn_inferior (); | |
4799 | } | |
4800 | ||
23860348 | 4801 | /* Async version of remote_kill. */ |
43ff13b4 | 4802 | static void |
fba45db2 | 4803 | remote_async_kill (void) |
43ff13b4 | 4804 | { |
23860348 | 4805 | /* Unregister the file descriptor from the event loop. */ |
ed9a39eb | 4806 | if (target_is_async_p ()) |
2cd58942 | 4807 | serial_async (remote_desc, NULL, 0); |
43ff13b4 JM |
4808 | |
4809 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4810 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4811 | if (kill_kludge) | |
4812 | { | |
4813 | kill_kludge = 0; | |
4814 | target_mourn_inferior (); | |
4815 | return; | |
4816 | } | |
4817 | ||
23860348 MS |
4818 | /* Use catch_errors so the user can quit from gdb even when we |
4819 | aren't on speaking terms with the remote system. */ | |
c5aa993b | 4820 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
4821 | |
4822 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4823 | we do or not. For the existing stubs, kill is a noop. */ | |
4824 | target_mourn_inferior (); | |
4825 | } | |
4826 | ||
c906108c | 4827 | static void |
fba45db2 | 4828 | remote_mourn (void) |
c906108c SS |
4829 | { |
4830 | remote_mourn_1 (&remote_ops); | |
4831 | } | |
4832 | ||
53a5351d | 4833 | static void |
fba45db2 | 4834 | remote_async_mourn (void) |
53a5351d JM |
4835 | { |
4836 | remote_mourn_1 (&remote_async_ops); | |
4837 | } | |
4838 | ||
c906108c | 4839 | static void |
fba45db2 | 4840 | extended_remote_mourn (void) |
c906108c SS |
4841 | { |
4842 | /* We do _not_ want to mourn the target like this; this will | |
4843 | remove the extended remote target from the target stack, | |
802188a7 | 4844 | and the next time the user says "run" it'll fail. |
c906108c SS |
4845 | |
4846 | FIXME: What is the right thing to do here? */ | |
4847 | #if 0 | |
4848 | remote_mourn_1 (&extended_remote_ops); | |
4849 | #endif | |
4850 | } | |
4851 | ||
4852 | /* Worker function for remote_mourn. */ | |
4853 | static void | |
fba45db2 | 4854 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
4855 | { |
4856 | unpush_target (target); | |
4857 | generic_mourn_inferior (); | |
4858 | } | |
4859 | ||
4860 | /* In the extended protocol we want to be able to do things like | |
4861 | "run" and have them basically work as expected. So we need | |
802188a7 | 4862 | a special create_inferior function. |
c906108c SS |
4863 | |
4864 | FIXME: One day add support for changing the exec file | |
4865 | we're debugging, arguments and an environment. */ | |
4866 | ||
4867 | static void | |
23860348 MS |
4868 | extended_remote_create_inferior (char *exec_file, char *args, |
4869 | char **env, int from_tty) | |
c906108c SS |
4870 | { |
4871 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4872 | the remote server. */ | |
4873 | remove_breakpoints (); | |
4874 | ||
4875 | /* Now restart the remote server. */ | |
4876 | extended_remote_restart (); | |
4877 | ||
4878 | /* Now put the breakpoints back in. This way we're safe if the | |
4879 | restart function works via a unix fork on the remote side. */ | |
4880 | insert_breakpoints (); | |
4881 | ||
4882 | /* Clean up from the last time we were running. */ | |
4883 | clear_proceed_status (); | |
c906108c SS |
4884 | } |
4885 | ||
23860348 | 4886 | /* Async version of extended_remote_create_inferior. */ |
43ff13b4 | 4887 | static void |
23860348 MS |
4888 | extended_remote_async_create_inferior (char *exec_file, char *args, |
4889 | char **env, int from_tty) | |
43ff13b4 JM |
4890 | { |
4891 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4892 | the remote server. */ | |
4893 | remove_breakpoints (); | |
4894 | ||
4895 | /* If running asynchronously, register the target file descriptor | |
23860348 | 4896 | with the event loop. */ |
362646f5 | 4897 | if (target_can_async_p ()) |
2acceee2 | 4898 | target_async (inferior_event_handler, 0); |
43ff13b4 JM |
4899 | |
4900 | /* Now restart the remote server. */ | |
4901 | extended_remote_restart (); | |
4902 | ||
4903 | /* Now put the breakpoints back in. This way we're safe if the | |
4904 | restart function works via a unix fork on the remote side. */ | |
4905 | insert_breakpoints (); | |
4906 | ||
4907 | /* Clean up from the last time we were running. */ | |
4908 | clear_proceed_status (); | |
43ff13b4 | 4909 | } |
c906108c | 4910 | \f |
c5aa993b | 4911 | |
aaab4dba | 4912 | /* On some machines, e.g. 68k, we may use a different breakpoint |
7fec2c59 AC |
4913 | instruction than other targets; in those use |
4914 | DEPRECATED_REMOTE_BREAKPOINT instead of just BREAKPOINT_FROM_PC. | |
4915 | Also, bi-endian targets may define | |
4916 | DEPRECATED_LITTLE_REMOTE_BREAKPOINT and | |
4917 | DEPRECATED_BIG_REMOTE_BREAKPOINT. If none of these are defined, we | |
4918 | just call the standard routines that are in mem-break.c. */ | |
4919 | ||
4920 | /* NOTE: cagney/2003-06-08: This is silly. A remote and simulator | |
4921 | target should use an identical BREAKPOINT_FROM_PC. As for native, | |
4922 | the ARCH-OS-tdep.c code can override the default. */ | |
4923 | ||
4924 | #if defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) && !defined(DEPRECATED_REMOTE_BREAKPOINT) | |
4925 | #define DEPRECATED_REMOTE_BREAKPOINT | |
c906108c SS |
4926 | #endif |
4927 | ||
7fec2c59 | 4928 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c SS |
4929 | |
4930 | /* If the target isn't bi-endian, just pretend it is. */ | |
7fec2c59 AC |
4931 | #if !defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && !defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) |
4932 | #define DEPRECATED_LITTLE_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT | |
4933 | #define DEPRECATED_BIG_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT | |
c906108c SS |
4934 | #endif |
4935 | ||
7fec2c59 AC |
4936 | static unsigned char big_break_insn[] = DEPRECATED_BIG_REMOTE_BREAKPOINT; |
4937 | static unsigned char little_break_insn[] = DEPRECATED_LITTLE_REMOTE_BREAKPOINT; | |
c906108c | 4938 | |
7fec2c59 | 4939 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c | 4940 | |
8181d85f DJ |
4941 | /* Insert a breakpoint. On targets that have software breakpoint |
4942 | support, we ask the remote target to do the work; on targets | |
4943 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c SS |
4944 | |
4945 | static int | |
8181d85f | 4946 | remote_insert_breakpoint (struct bp_target_info *bp_tgt) |
c906108c | 4947 | { |
8181d85f | 4948 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 4949 | struct remote_state *rs = get_remote_state (); |
7fec2c59 | 4950 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c | 4951 | int val; |
802188a7 | 4952 | #endif |
96baa820 | 4953 | |
d471ea57 AC |
4954 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
4955 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
4956 | fails, and the user has explicitly requested the Z support then | |
23860348 | 4957 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 4958 | |
444abaca | 4959 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 4960 | { |
6d820c5c | 4961 | char *p = rs->buf; |
802188a7 | 4962 | |
96baa820 JM |
4963 | *(p++) = 'Z'; |
4964 | *(p++) = '0'; | |
4965 | *(p++) = ','; | |
8181d85f DJ |
4966 | BREAKPOINT_FROM_PC (&bp_tgt->placed_address, &bp_tgt->placed_size); |
4967 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); | |
4968 | p += hexnumstr (p, addr); | |
4969 | sprintf (p, ",%d", bp_tgt->placed_size); | |
802188a7 | 4970 | |
6d820c5c DJ |
4971 | putpkt (rs->buf); |
4972 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 4973 | |
6d820c5c | 4974 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 4975 | { |
d471ea57 AC |
4976 | case PACKET_ERROR: |
4977 | return -1; | |
4978 | case PACKET_OK: | |
4979 | return 0; | |
4980 | case PACKET_UNKNOWN: | |
4981 | break; | |
96baa820 JM |
4982 | } |
4983 | } | |
c906108c | 4984 | |
802188a7 | 4985 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
8181d85f DJ |
4986 | bp_tgt->placed_size = bp_tgt->shadow_len = sizeof big_break_insn; |
4987 | val = target_read_memory (addr, bp_tgt->shadow_contents, bp_tgt->shadow_len); | |
c906108c SS |
4988 | |
4989 | if (val == 0) | |
4990 | { | |
d7449b42 | 4991 | if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) |
c906108c SS |
4992 | val = target_write_memory (addr, (char *) big_break_insn, |
4993 | sizeof big_break_insn); | |
4994 | else | |
4995 | val = target_write_memory (addr, (char *) little_break_insn, | |
4996 | sizeof little_break_insn); | |
4997 | } | |
4998 | ||
4999 | return val; | |
5000 | #else | |
8181d85f | 5001 | return memory_insert_breakpoint (bp_tgt); |
7fec2c59 | 5002 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c SS |
5003 | } |
5004 | ||
5005 | static int | |
8181d85f | 5006 | remote_remove_breakpoint (struct bp_target_info *bp_tgt) |
c906108c | 5007 | { |
8181d85f | 5008 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 5009 | struct remote_state *rs = get_remote_state (); |
96baa820 JM |
5010 | int bp_size; |
5011 | ||
444abaca | 5012 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 5013 | { |
6d820c5c | 5014 | char *p = rs->buf; |
802188a7 | 5015 | |
96baa820 JM |
5016 | *(p++) = 'z'; |
5017 | *(p++) = '0'; | |
5018 | *(p++) = ','; | |
5019 | ||
8181d85f DJ |
5020 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
5021 | p += hexnumstr (p, addr); | |
5022 | sprintf (p, ",%d", bp_tgt->placed_size); | |
802188a7 | 5023 | |
6d820c5c DJ |
5024 | putpkt (rs->buf); |
5025 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5026 | |
6d820c5c | 5027 | return (rs->buf[0] == 'E'); |
96baa820 JM |
5028 | } |
5029 | ||
7fec2c59 | 5030 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
8181d85f DJ |
5031 | return target_write_memory (bp_tgt->placed_address, bp_tgt->shadow_contents, |
5032 | bp_tgt->shadow_len); | |
c906108c | 5033 | #else |
8181d85f | 5034 | return memory_remove_breakpoint (bp_tgt); |
7fec2c59 | 5035 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c SS |
5036 | } |
5037 | ||
d471ea57 AC |
5038 | static int |
5039 | watchpoint_to_Z_packet (int type) | |
5040 | { | |
5041 | switch (type) | |
5042 | { | |
5043 | case hw_write: | |
bb858e6a | 5044 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
5045 | break; |
5046 | case hw_read: | |
bb858e6a | 5047 | return Z_PACKET_READ_WP; |
d471ea57 AC |
5048 | break; |
5049 | case hw_access: | |
bb858e6a | 5050 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
5051 | break; |
5052 | default: | |
8e65ff28 | 5053 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5054 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
5055 | } |
5056 | } | |
5057 | ||
3c3bea1c | 5058 | static int |
fba45db2 | 5059 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 5060 | { |
d01949b6 | 5061 | struct remote_state *rs = get_remote_state (); |
e514a9d6 | 5062 | char *p; |
d471ea57 | 5063 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 5064 | |
444abaca | 5065 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
5cffb350 | 5066 | return -1; |
802188a7 | 5067 | |
6d820c5c DJ |
5068 | sprintf (rs->buf, "Z%x,", packet); |
5069 | p = strchr (rs->buf, '\0'); | |
96baa820 JM |
5070 | addr = remote_address_masked (addr); |
5071 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 5072 | sprintf (p, ",%x", len); |
802188a7 | 5073 | |
6d820c5c DJ |
5074 | putpkt (rs->buf); |
5075 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5076 | |
6d820c5c | 5077 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
5078 | { |
5079 | case PACKET_ERROR: | |
5080 | case PACKET_UNKNOWN: | |
5081 | return -1; | |
5082 | case PACKET_OK: | |
5083 | return 0; | |
5084 | } | |
8e65ff28 | 5085 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5086 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
5087 | } |
5088 | ||
d471ea57 | 5089 | |
3c3bea1c | 5090 | static int |
fba45db2 | 5091 | remote_remove_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 5092 | { |
d01949b6 | 5093 | struct remote_state *rs = get_remote_state (); |
e514a9d6 | 5094 | char *p; |
d471ea57 AC |
5095 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
5096 | ||
444abaca | 5097 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
5cffb350 | 5098 | return -1; |
802188a7 | 5099 | |
6d820c5c DJ |
5100 | sprintf (rs->buf, "z%x,", packet); |
5101 | p = strchr (rs->buf, '\0'); | |
96baa820 JM |
5102 | addr = remote_address_masked (addr); |
5103 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 5104 | sprintf (p, ",%x", len); |
6d820c5c DJ |
5105 | putpkt (rs->buf); |
5106 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5107 | |
6d820c5c | 5108 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
5109 | { |
5110 | case PACKET_ERROR: | |
5111 | case PACKET_UNKNOWN: | |
5112 | return -1; | |
5113 | case PACKET_OK: | |
5114 | return 0; | |
5115 | } | |
8e65ff28 | 5116 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5117 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
5118 | } |
5119 | ||
3c3bea1c | 5120 | |
501eef12 AC |
5121 | int remote_hw_watchpoint_limit = -1; |
5122 | int remote_hw_breakpoint_limit = -1; | |
d471ea57 | 5123 | |
b9362cc7 | 5124 | static int |
3c3bea1c | 5125 | remote_check_watch_resources (int type, int cnt, int ot) |
96baa820 | 5126 | { |
3c3bea1c GS |
5127 | if (type == bp_hardware_breakpoint) |
5128 | { | |
5129 | if (remote_hw_breakpoint_limit == 0) | |
5130 | return 0; | |
501eef12 AC |
5131 | else if (remote_hw_breakpoint_limit < 0) |
5132 | return 1; | |
3c3bea1c GS |
5133 | else if (cnt <= remote_hw_breakpoint_limit) |
5134 | return 1; | |
5135 | } | |
5136 | else | |
5137 | { | |
5138 | if (remote_hw_watchpoint_limit == 0) | |
5139 | return 0; | |
501eef12 AC |
5140 | else if (remote_hw_watchpoint_limit < 0) |
5141 | return 1; | |
3c3bea1c GS |
5142 | else if (ot) |
5143 | return -1; | |
5144 | else if (cnt <= remote_hw_watchpoint_limit) | |
5145 | return 1; | |
5146 | } | |
5147 | return -1; | |
5148 | } | |
5149 | ||
b9362cc7 | 5150 | static int |
3c3bea1c GS |
5151 | remote_stopped_by_watchpoint (void) |
5152 | { | |
5153 | return remote_stopped_by_watchpoint_p; | |
5154 | } | |
5155 | ||
7270d8f2 OF |
5156 | extern int stepped_after_stopped_by_watchpoint; |
5157 | ||
4aa7a7f5 JJ |
5158 | static int |
5159 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 5160 | { |
4aa7a7f5 | 5161 | int rc = 0; |
7270d8f2 OF |
5162 | if (remote_stopped_by_watchpoint () |
5163 | || stepped_after_stopped_by_watchpoint) | |
4aa7a7f5 JJ |
5164 | { |
5165 | *addr_p = remote_watch_data_address; | |
5166 | rc = 1; | |
5167 | } | |
5168 | ||
5169 | return rc; | |
3c3bea1c GS |
5170 | } |
5171 | ||
5172 | ||
5173 | static int | |
8181d85f | 5174 | remote_insert_hw_breakpoint (struct bp_target_info *bp_tgt) |
3c3bea1c | 5175 | { |
8181d85f | 5176 | CORE_ADDR addr; |
d01949b6 | 5177 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 5178 | char *p = rs->buf; |
802188a7 | 5179 | |
c8189ed1 | 5180 | /* The length field should be set to the size of a breakpoint |
8181d85f | 5181 | instruction, even though we aren't inserting one ourselves. */ |
c8189ed1 | 5182 | |
8181d85f | 5183 | BREAKPOINT_FROM_PC (&bp_tgt->placed_address, &bp_tgt->placed_size); |
3c3bea1c | 5184 | |
444abaca | 5185 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 5186 | return -1; |
2bc416ba | 5187 | |
96baa820 JM |
5188 | *(p++) = 'Z'; |
5189 | *(p++) = '1'; | |
5190 | *(p++) = ','; | |
802188a7 | 5191 | |
8181d85f | 5192 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 5193 | p += hexnumstr (p, (ULONGEST) addr); |
8181d85f | 5194 | sprintf (p, ",%x", bp_tgt->placed_size); |
96baa820 | 5195 | |
6d820c5c DJ |
5196 | putpkt (rs->buf); |
5197 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 5198 | |
6d820c5c | 5199 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
5200 | { |
5201 | case PACKET_ERROR: | |
5202 | case PACKET_UNKNOWN: | |
5203 | return -1; | |
5204 | case PACKET_OK: | |
5205 | return 0; | |
5206 | } | |
8e65ff28 | 5207 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5208 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
5209 | } |
5210 | ||
d471ea57 | 5211 | |
802188a7 | 5212 | static int |
8181d85f | 5213 | remote_remove_hw_breakpoint (struct bp_target_info *bp_tgt) |
96baa820 | 5214 | { |
8181d85f | 5215 | CORE_ADDR addr; |
d01949b6 | 5216 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 5217 | char *p = rs->buf; |
c8189ed1 | 5218 | |
444abaca | 5219 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 5220 | return -1; |
802188a7 | 5221 | |
96baa820 JM |
5222 | *(p++) = 'z'; |
5223 | *(p++) = '1'; | |
5224 | *(p++) = ','; | |
802188a7 | 5225 | |
8181d85f | 5226 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 5227 | p += hexnumstr (p, (ULONGEST) addr); |
8181d85f | 5228 | sprintf (p, ",%x", bp_tgt->placed_size); |
96baa820 | 5229 | |
6d820c5c DJ |
5230 | putpkt (rs->buf); |
5231 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 5232 | |
6d820c5c | 5233 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
5234 | { |
5235 | case PACKET_ERROR: | |
5236 | case PACKET_UNKNOWN: | |
5237 | return -1; | |
5238 | case PACKET_OK: | |
5239 | return 0; | |
5240 | } | |
8e65ff28 | 5241 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5242 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 5243 | } |
96baa820 | 5244 | |
c906108c SS |
5245 | /* Some targets are only capable of doing downloads, and afterwards |
5246 | they switch to the remote serial protocol. This function provides | |
5247 | a clean way to get from the download target to the remote target. | |
5248 | It's basically just a wrapper so that we don't have to expose any | |
5249 | of the internal workings of remote.c. | |
5250 | ||
5251 | Prior to calling this routine, you should shutdown the current | |
5252 | target code, else you will get the "A program is being debugged | |
5253 | already..." message. Usually a call to pop_target() suffices. */ | |
5254 | ||
5255 | void | |
fba45db2 | 5256 | push_remote_target (char *name, int from_tty) |
c906108c | 5257 | { |
a3f17187 | 5258 | printf_filtered (_("Switching to remote protocol\n")); |
c906108c SS |
5259 | remote_open (name, from_tty); |
5260 | } | |
5261 | ||
23860348 | 5262 | /* Table used by the crc32 function to calcuate the checksum. */ |
c906108c | 5263 | |
c5aa993b JM |
5264 | static unsigned long crc32_table[256] = |
5265 | {0, 0}; | |
c906108c SS |
5266 | |
5267 | static unsigned long | |
fba45db2 | 5268 | crc32 (unsigned char *buf, int len, unsigned int crc) |
c906108c | 5269 | { |
c5aa993b | 5270 | if (!crc32_table[1]) |
c906108c | 5271 | { |
23860348 | 5272 | /* Initialize the CRC table and the decoding table. */ |
c906108c SS |
5273 | int i, j; |
5274 | unsigned int c; | |
5275 | ||
5276 | for (i = 0; i < 256; i++) | |
c5aa993b JM |
5277 | { |
5278 | for (c = i << 24, j = 8; j > 0; --j) | |
5279 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
5280 | crc32_table[i] = c; | |
5281 | } | |
c906108c SS |
5282 | } |
5283 | ||
5284 | while (len--) | |
5285 | { | |
5286 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |
5287 | buf++; | |
5288 | } | |
5289 | return crc; | |
5290 | } | |
5291 | ||
5292 | /* compare-sections command | |
5293 | ||
5294 | With no arguments, compares each loadable section in the exec bfd | |
5295 | with the same memory range on the target, and reports mismatches. | |
5296 | Useful for verifying the image on the target against the exec file. | |
5297 | Depends on the target understanding the new "qCRC:" request. */ | |
5298 | ||
e514a9d6 JM |
5299 | /* FIXME: cagney/1999-10-26: This command should be broken down into a |
5300 | target method (target verify memory) and generic version of the | |
5301 | actual command. This will allow other high-level code (especially | |
23860348 | 5302 | generic_load()) to make use of this target functionality. */ |
e514a9d6 | 5303 | |
c906108c | 5304 | static void |
fba45db2 | 5305 | compare_sections_command (char *args, int from_tty) |
c906108c | 5306 | { |
d01949b6 | 5307 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
5308 | asection *s; |
5309 | unsigned long host_crc, target_crc; | |
5310 | extern bfd *exec_bfd; | |
5311 | struct cleanup *old_chain; | |
085dd6e6 JM |
5312 | char *tmp; |
5313 | char *sectdata; | |
ce359b09 | 5314 | const char *sectname; |
c906108c SS |
5315 | bfd_size_type size; |
5316 | bfd_vma lma; | |
5317 | int matched = 0; | |
5318 | int mismatched = 0; | |
5319 | ||
5320 | if (!exec_bfd) | |
8a3fe4f8 | 5321 | error (_("command cannot be used without an exec file")); |
c906108c SS |
5322 | if (!current_target.to_shortname || |
5323 | strcmp (current_target.to_shortname, "remote") != 0) | |
8a3fe4f8 | 5324 | error (_("command can only be used with remote target")); |
c906108c | 5325 | |
c5aa993b | 5326 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
5327 | { |
5328 | if (!(s->flags & SEC_LOAD)) | |
c5aa993b | 5329 | continue; /* skip non-loadable section */ |
c906108c | 5330 | |
2c500098 | 5331 | size = bfd_get_section_size (s); |
c906108c | 5332 | if (size == 0) |
c5aa993b | 5333 | continue; /* skip zero-length section */ |
c906108c | 5334 | |
ce359b09 | 5335 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 5336 | if (args && strcmp (args, sectname) != 0) |
c5aa993b | 5337 | continue; /* not the section selected by user */ |
c906108c | 5338 | |
c5aa993b | 5339 | matched = 1; /* do this section */ |
c906108c | 5340 | lma = s->lma; |
23860348 | 5341 | /* FIXME: assumes lma can fit into long. */ |
ea9c271d | 5342 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", |
ecbc58df | 5343 | (long) lma, (long) size); |
6d820c5c | 5344 | putpkt (rs->buf); |
c906108c | 5345 | |
23860348 MS |
5346 | /* Be clever; compute the host_crc before waiting for target |
5347 | reply. */ | |
c906108c | 5348 | sectdata = xmalloc (size); |
b8c9b27d | 5349 | old_chain = make_cleanup (xfree, sectdata); |
c906108c SS |
5350 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
5351 | host_crc = crc32 ((unsigned char *) sectdata, size, 0xffffffff); | |
5352 | ||
6d820c5c DJ |
5353 | getpkt (&rs->buf, &rs->buf_size, 0); |
5354 | if (rs->buf[0] == 'E') | |
8a3fe4f8 | 5355 | error (_("target memory fault, section %s, range 0x%s -- 0x%s"), |
823ca731 | 5356 | sectname, paddr (lma), paddr (lma + size)); |
6d820c5c | 5357 | if (rs->buf[0] != 'C') |
8a3fe4f8 | 5358 | error (_("remote target does not support this operation")); |
c906108c | 5359 | |
6d820c5c | 5360 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) |
c906108c SS |
5361 | target_crc = target_crc * 16 + fromhex (*tmp); |
5362 | ||
d4f3574e SS |
5363 | printf_filtered ("Section %s, range 0x%s -- 0x%s: ", |
5364 | sectname, paddr (lma), paddr (lma + size)); | |
c906108c SS |
5365 | if (host_crc == target_crc) |
5366 | printf_filtered ("matched.\n"); | |
5367 | else | |
c5aa993b JM |
5368 | { |
5369 | printf_filtered ("MIS-MATCHED!\n"); | |
5370 | mismatched++; | |
5371 | } | |
c906108c SS |
5372 | |
5373 | do_cleanups (old_chain); | |
5374 | } | |
5375 | if (mismatched > 0) | |
8a3fe4f8 AC |
5376 | warning (_("One or more sections of the remote executable does not match\n\ |
5377 | the loaded file\n")); | |
c906108c | 5378 | if (args && !matched) |
a3f17187 | 5379 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
5380 | } |
5381 | ||
0876f84a DJ |
5382 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
5383 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
5384 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
5385 | The number of bytes read may be less than LEN without indicating an | |
5386 | EOF. PACKET is checked and updated to indicate whether the remote | |
5387 | target supports this object. */ | |
5388 | ||
5389 | static LONGEST | |
5390 | remote_read_qxfer (struct target_ops *ops, const char *object_name, | |
5391 | const char *annex, | |
5392 | gdb_byte *readbuf, ULONGEST offset, LONGEST len, | |
5393 | struct packet_config *packet) | |
5394 | { | |
5395 | static char *finished_object; | |
5396 | static char *finished_annex; | |
5397 | static ULONGEST finished_offset; | |
5398 | ||
5399 | struct remote_state *rs = get_remote_state (); | |
5400 | unsigned int total = 0; | |
5401 | LONGEST i, n, packet_len; | |
5402 | ||
5403 | if (packet->support == PACKET_DISABLE) | |
5404 | return -1; | |
5405 | ||
5406 | /* Check whether we've cached an end-of-object packet that matches | |
5407 | this request. */ | |
5408 | if (finished_object) | |
5409 | { | |
5410 | if (strcmp (object_name, finished_object) == 0 | |
5411 | && strcmp (annex ? annex : "", finished_annex) == 0 | |
5412 | && offset == finished_offset) | |
5413 | return 0; | |
5414 | ||
5415 | /* Otherwise, we're now reading something different. Discard | |
5416 | the cache. */ | |
5417 | xfree (finished_object); | |
5418 | xfree (finished_annex); | |
5419 | finished_object = NULL; | |
5420 | finished_annex = NULL; | |
5421 | } | |
5422 | ||
5423 | /* Request only enough to fit in a single packet. The actual data | |
5424 | may not, since we don't know how much of it will need to be escaped; | |
5425 | the target is free to respond with slightly less data. We subtract | |
5426 | five to account for the response type and the protocol frame. */ | |
5427 | n = min (get_remote_packet_size () - 5, len); | |
5428 | snprintf (rs->buf, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s", | |
5429 | object_name, annex ? annex : "", | |
5430 | phex_nz (offset, sizeof offset), | |
5431 | phex_nz (n, sizeof n)); | |
5432 | i = putpkt (rs->buf); | |
5433 | if (i < 0) | |
5434 | return -1; | |
5435 | ||
5436 | rs->buf[0] = '\0'; | |
5437 | packet_len = getpkt_sane (&rs->buf, &rs->buf_size, 0); | |
5438 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) | |
5439 | return -1; | |
5440 | ||
5441 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
5442 | error (_("Unknown remote qXfer reply: %s"), rs->buf); | |
5443 | ||
5444 | /* 'm' means there is (or at least might be) more data after this | |
5445 | batch. That does not make sense unless there's at least one byte | |
5446 | of data in this reply. */ | |
5447 | if (rs->buf[0] == 'm' && packet_len == 1) | |
5448 | error (_("Remote qXfer reply contained no data.")); | |
5449 | ||
5450 | /* Got some data. */ | |
5451 | i = remote_unescape_input (rs->buf + 1, packet_len - 1, readbuf, n); | |
5452 | ||
5453 | /* 'l' is an EOF marker, possibly including a final block of data, | |
5454 | or possibly empty. Record it to bypass the next read, if one is | |
5455 | issued. */ | |
5456 | if (rs->buf[0] == 'l') | |
5457 | { | |
5458 | finished_object = xstrdup (object_name); | |
5459 | finished_annex = xstrdup (annex ? annex : ""); | |
5460 | finished_offset = offset + i; | |
5461 | } | |
5462 | ||
5463 | return i; | |
5464 | } | |
5465 | ||
1e3ff5ad | 5466 | static LONGEST |
4b8a223f | 5467 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
961cb7b5 MK |
5468 | const char *annex, gdb_byte *readbuf, |
5469 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
c906108c | 5470 | { |
d01949b6 | 5471 | struct remote_state *rs = get_remote_state (); |
c906108c | 5472 | int i; |
6d820c5c | 5473 | char *p2; |
1e3ff5ad | 5474 | char query_type; |
c906108c | 5475 | |
b2182ed2 | 5476 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
5477 | if (object == TARGET_OBJECT_MEMORY) |
5478 | { | |
5479 | int xfered; | |
5480 | errno = 0; | |
5481 | ||
5482 | if (writebuf != NULL) | |
b2182ed2 | 5483 | xfered = remote_write_bytes (offset, writebuf, len); |
21e3b9b9 | 5484 | else |
b2182ed2 | 5485 | xfered = remote_read_bytes (offset, readbuf, len); |
21e3b9b9 DJ |
5486 | |
5487 | if (xfered > 0) | |
5488 | return xfered; | |
5489 | else if (xfered == 0 && errno == 0) | |
5490 | return 0; | |
5491 | else | |
5492 | return -1; | |
5493 | } | |
5494 | ||
a76d924d DJ |
5495 | /* Only handle flash writes. */ |
5496 | if (writebuf != NULL) | |
5497 | { | |
5498 | LONGEST xfered; | |
5499 | ||
5500 | switch (object) | |
5501 | { | |
5502 | case TARGET_OBJECT_FLASH: | |
5503 | xfered = remote_flash_write (ops, offset, len, writebuf); | |
5504 | ||
5505 | if (xfered > 0) | |
5506 | return xfered; | |
5507 | else if (xfered == 0 && errno == 0) | |
5508 | return 0; | |
5509 | else | |
5510 | return -1; | |
5511 | ||
5512 | default: | |
5513 | return -1; | |
5514 | } | |
5515 | } | |
4b8a223f | 5516 | |
1e3ff5ad AC |
5517 | /* Map pre-existing objects onto letters. DO NOT do this for new |
5518 | objects!!! Instead specify new query packets. */ | |
5519 | switch (object) | |
c906108c | 5520 | { |
1e3ff5ad AC |
5521 | case TARGET_OBJECT_AVR: |
5522 | query_type = 'R'; | |
5523 | break; | |
802188a7 RM |
5524 | |
5525 | case TARGET_OBJECT_AUXV: | |
0876f84a DJ |
5526 | gdb_assert (annex == NULL); |
5527 | return remote_read_qxfer (ops, "auxv", annex, readbuf, offset, len, | |
5528 | &remote_protocol_packets[PACKET_qXfer_auxv]); | |
802188a7 | 5529 | |
fd79ecee DJ |
5530 | case TARGET_OBJECT_MEMORY_MAP: |
5531 | gdb_assert (annex == NULL); | |
5532 | return remote_read_qxfer (ops, "memory-map", annex, readbuf, offset, len, | |
5533 | &remote_protocol_packets[PACKET_qXfer_memory_map]); | |
5534 | ||
1e3ff5ad | 5535 | default: |
c906108c SS |
5536 | return -1; |
5537 | } | |
5538 | ||
4b8a223f | 5539 | /* Note: a zero OFFSET and LEN can be used to query the minimum |
1e3ff5ad | 5540 | buffer size. */ |
4b8a223f | 5541 | if (offset == 0 && len == 0) |
ea9c271d DJ |
5542 | return (get_remote_packet_size ()); |
5543 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not | |
24b06219 | 5544 | large enough let the caller deal with it. */ |
ea9c271d | 5545 | if (len < get_remote_packet_size ()) |
1e3ff5ad | 5546 | return -1; |
ea9c271d | 5547 | len = get_remote_packet_size (); |
1e3ff5ad | 5548 | |
23860348 | 5549 | /* Except for querying the minimum buffer size, target must be open. */ |
c5aa993b | 5550 | if (!remote_desc) |
8a3fe4f8 | 5551 | error (_("remote query is only available after target open")); |
c906108c | 5552 | |
1e3ff5ad | 5553 | gdb_assert (annex != NULL); |
4b8a223f | 5554 | gdb_assert (readbuf != NULL); |
c906108c | 5555 | |
6d820c5c | 5556 | p2 = rs->buf; |
c906108c SS |
5557 | *p2++ = 'q'; |
5558 | *p2++ = query_type; | |
5559 | ||
23860348 MS |
5560 | /* We used one buffer char for the remote protocol q command and |
5561 | another for the query type. As the remote protocol encapsulation | |
5562 | uses 4 chars plus one extra in case we are debugging | |
5563 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
5564 | string. */ | |
c906108c | 5565 | i = 0; |
ea9c271d | 5566 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 5567 | { |
1e3ff5ad AC |
5568 | /* Bad caller may have sent forbidden characters. */ |
5569 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
5570 | *p2++ = annex[i]; | |
c906108c SS |
5571 | i++; |
5572 | } | |
1e3ff5ad AC |
5573 | *p2 = '\0'; |
5574 | gdb_assert (annex[i] == '\0'); | |
c906108c | 5575 | |
6d820c5c | 5576 | i = putpkt (rs->buf); |
c5aa993b JM |
5577 | if (i < 0) |
5578 | return i; | |
c906108c | 5579 | |
6d820c5c DJ |
5580 | getpkt (&rs->buf, &rs->buf_size, 0); |
5581 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 5582 | |
cfd77fa1 | 5583 | return strlen ((char *) readbuf); |
c906108c SS |
5584 | } |
5585 | ||
96baa820 JM |
5586 | static void |
5587 | remote_rcmd (char *command, | |
d9fcf2fb | 5588 | struct ui_file *outbuf) |
96baa820 | 5589 | { |
d01949b6 | 5590 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 5591 | char *p = rs->buf; |
96baa820 JM |
5592 | |
5593 | if (!remote_desc) | |
8a3fe4f8 | 5594 | error (_("remote rcmd is only available after target open")); |
96baa820 | 5595 | |
23860348 | 5596 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
5597 | if (command == NULL) |
5598 | command = ""; | |
5599 | ||
23860348 | 5600 | /* The query prefix. */ |
2e9f7625 DJ |
5601 | strcpy (rs->buf, "qRcmd,"); |
5602 | p = strchr (rs->buf, '\0'); | |
96baa820 | 5603 | |
2e9f7625 | 5604 | if ((strlen (rs->buf) + strlen (command) * 2 + 8/*misc*/) > get_remote_packet_size ()) |
8a3fe4f8 | 5605 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 5606 | |
23860348 | 5607 | /* Encode the actual command. */ |
cfd77fa1 | 5608 | bin2hex ((gdb_byte *) command, p, 0); |
96baa820 | 5609 | |
6d820c5c | 5610 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 5611 | error (_("Communication problem with target.")); |
96baa820 JM |
5612 | |
5613 | /* get/display the response */ | |
5614 | while (1) | |
5615 | { | |
2e9f7625 DJ |
5616 | char *buf; |
5617 | ||
23860348 | 5618 | /* XXX - see also tracepoint.c:remote_get_noisy_reply(). */ |
2e9f7625 | 5619 | rs->buf[0] = '\0'; |
6d820c5c | 5620 | getpkt (&rs->buf, &rs->buf_size, 0); |
2e9f7625 | 5621 | buf = rs->buf; |
96baa820 | 5622 | if (buf[0] == '\0') |
8a3fe4f8 | 5623 | error (_("Target does not support this command.")); |
96baa820 JM |
5624 | if (buf[0] == 'O' && buf[1] != 'K') |
5625 | { | |
23860348 | 5626 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
5627 | continue; |
5628 | } | |
5629 | if (strcmp (buf, "OK") == 0) | |
5630 | break; | |
7be570e7 JM |
5631 | if (strlen (buf) == 3 && buf[0] == 'E' |
5632 | && isdigit (buf[1]) && isdigit (buf[2])) | |
5633 | { | |
8a3fe4f8 | 5634 | error (_("Protocol error with Rcmd")); |
7be570e7 | 5635 | } |
96baa820 JM |
5636 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
5637 | { | |
5638 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
5639 | fputc_unfiltered (c, outbuf); | |
5640 | } | |
5641 | break; | |
5642 | } | |
5643 | } | |
5644 | ||
fd79ecee DJ |
5645 | static VEC(mem_region_s) * |
5646 | remote_memory_map (struct target_ops *ops) | |
5647 | { | |
5648 | VEC(mem_region_s) *result = NULL; | |
5649 | char *text = target_read_stralloc (¤t_target, | |
5650 | TARGET_OBJECT_MEMORY_MAP, NULL); | |
5651 | ||
5652 | if (text) | |
5653 | { | |
5654 | struct cleanup *back_to = make_cleanup (xfree, text); | |
5655 | result = parse_memory_map (text); | |
5656 | do_cleanups (back_to); | |
5657 | } | |
5658 | ||
5659 | return result; | |
5660 | } | |
5661 | ||
c906108c | 5662 | static void |
fba45db2 | 5663 | packet_command (char *args, int from_tty) |
c906108c | 5664 | { |
d01949b6 | 5665 | struct remote_state *rs = get_remote_state (); |
c906108c | 5666 | |
c5aa993b | 5667 | if (!remote_desc) |
8a3fe4f8 | 5668 | error (_("command can only be used with remote target")); |
c906108c | 5669 | |
c5aa993b | 5670 | if (!args) |
8a3fe4f8 | 5671 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
5672 | |
5673 | puts_filtered ("sending: "); | |
5674 | print_packet (args); | |
5675 | puts_filtered ("\n"); | |
5676 | putpkt (args); | |
5677 | ||
6d820c5c | 5678 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 5679 | puts_filtered ("received: "); |
6d820c5c | 5680 | print_packet (rs->buf); |
c906108c SS |
5681 | puts_filtered ("\n"); |
5682 | } | |
5683 | ||
5684 | #if 0 | |
23860348 | 5685 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 5686 | |
a14ed312 | 5687 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 5688 | |
a14ed312 | 5689 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 5690 | |
a14ed312 | 5691 | static void threadalive_test (char *cmd, int tty); |
c906108c | 5692 | |
a14ed312 | 5693 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 5694 | |
23860348 | 5695 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 5696 | |
a14ed312 | 5697 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 5698 | |
23860348 | 5699 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 5700 | |
a14ed312 | 5701 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 5702 | |
a14ed312 | 5703 | static void init_remote_threadtests (void); |
c906108c | 5704 | |
23860348 | 5705 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
5706 | |
5707 | static void | |
fba45db2 | 5708 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
5709 | { |
5710 | int sample_thread = SAMPLE_THREAD; | |
5711 | ||
a3f17187 | 5712 | printf_filtered (_("Remote threadset test\n")); |
c906108c SS |
5713 | set_thread (sample_thread, 1); |
5714 | } | |
5715 | ||
5716 | ||
5717 | static void | |
fba45db2 | 5718 | threadalive_test (char *cmd, int tty) |
c906108c SS |
5719 | { |
5720 | int sample_thread = SAMPLE_THREAD; | |
5721 | ||
39f77062 | 5722 | if (remote_thread_alive (pid_to_ptid (sample_thread))) |
c906108c SS |
5723 | printf_filtered ("PASS: Thread alive test\n"); |
5724 | else | |
5725 | printf_filtered ("FAIL: Thread alive test\n"); | |
5726 | } | |
5727 | ||
23860348 | 5728 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
5729 | |
5730 | void | |
fba45db2 | 5731 | output_threadid (char *title, threadref *ref) |
c906108c SS |
5732 | { |
5733 | char hexid[20]; | |
5734 | ||
23860348 | 5735 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
5736 | hexid[16] = 0; |
5737 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
5738 | } | |
5739 | ||
5740 | static void | |
fba45db2 | 5741 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
5742 | { |
5743 | int startflag = 1; | |
5744 | threadref nextthread; | |
5745 | int done, result_count; | |
5746 | threadref threadlist[3]; | |
5747 | ||
5748 | printf_filtered ("Remote Threadlist test\n"); | |
5749 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
5750 | &result_count, &threadlist[0])) | |
5751 | printf_filtered ("FAIL: threadlist test\n"); | |
5752 | else | |
5753 | { | |
5754 | threadref *scan = threadlist; | |
5755 | threadref *limit = scan + result_count; | |
5756 | ||
5757 | while (scan < limit) | |
5758 | output_threadid (" thread ", scan++); | |
5759 | } | |
5760 | } | |
5761 | ||
5762 | void | |
fba45db2 | 5763 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
5764 | { |
5765 | output_threadid ("Threadid: ", &info->threadid); | |
5766 | printf_filtered ("Name: %s\n ", info->shortname); | |
5767 | printf_filtered ("State: %s\n", info->display); | |
5768 | printf_filtered ("other: %s\n\n", info->more_display); | |
5769 | } | |
5770 | ||
5771 | int | |
fba45db2 | 5772 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
5773 | { |
5774 | int result; | |
5775 | int set; | |
5776 | struct gdb_ext_thread_info threadinfo; | |
5777 | ||
5778 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
5779 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
5780 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
5781 | display_thread_info (&threadinfo); | |
5782 | return result; | |
5783 | } | |
5784 | ||
5785 | static void | |
fba45db2 | 5786 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
5787 | { |
5788 | int athread = SAMPLE_THREAD; | |
5789 | threadref thread; | |
5790 | int set; | |
5791 | ||
5792 | int_to_threadref (&thread, athread); | |
5793 | printf_filtered ("Remote Threadinfo test\n"); | |
5794 | if (!get_and_display_threadinfo (&thread)) | |
5795 | printf_filtered ("FAIL cannot get thread info\n"); | |
5796 | } | |
5797 | ||
5798 | static int | |
fba45db2 | 5799 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
5800 | { |
5801 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
5802 | return get_and_display_threadinfo (ref); | |
5803 | } | |
5804 | ||
5805 | static void | |
fba45db2 | 5806 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
5807 | { |
5808 | printf_filtered ("Remote Threadlist update test\n"); | |
5809 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
5810 | } | |
5811 | ||
5812 | static void | |
5813 | init_remote_threadtests (void) | |
5814 | { | |
1bedd215 AC |
5815 | add_com ("tlist", class_obscure, threadlist_test_cmd, _("\ |
5816 | Fetch and print the remote list of thread identifiers, one pkt only")); | |
c906108c | 5817 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 5818 | _("Fetch and display info about one thread")); |
c906108c | 5819 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 5820 | _("Test setting to a different thread")); |
c906108c | 5821 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 5822 | _("Iterate through updating all remote thread info")); |
c906108c | 5823 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 5824 | _(" Remote thread alive test ")); |
c906108c SS |
5825 | } |
5826 | ||
5827 | #endif /* 0 */ | |
5828 | ||
f3fb8c85 MS |
5829 | /* Convert a thread ID to a string. Returns the string in a static |
5830 | buffer. */ | |
5831 | ||
5832 | static char * | |
39f77062 | 5833 | remote_pid_to_str (ptid_t ptid) |
f3fb8c85 | 5834 | { |
fd0a2a6f | 5835 | static char buf[32]; |
f3fb8c85 | 5836 | |
32a5b2f1 | 5837 | xsnprintf (buf, sizeof buf, "Thread %d", ptid_get_pid (ptid)); |
f3fb8c85 MS |
5838 | return buf; |
5839 | } | |
5840 | ||
38691318 KB |
5841 | /* Get the address of the thread local variable in OBJFILE which is |
5842 | stored at OFFSET within the thread local storage for thread PTID. */ | |
5843 | ||
5844 | static CORE_ADDR | |
5845 | remote_get_thread_local_address (ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
5846 | { | |
444abaca | 5847 | if (remote_protocol_packets[PACKET_qGetTLSAddr].support != PACKET_DISABLE) |
38691318 KB |
5848 | { |
5849 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 5850 | char *p = rs->buf; |
571dd617 | 5851 | enum packet_result result; |
38691318 KB |
5852 | |
5853 | strcpy (p, "qGetTLSAddr:"); | |
5854 | p += strlen (p); | |
5855 | p += hexnumstr (p, PIDGET (ptid)); | |
5856 | *p++ = ','; | |
5857 | p += hexnumstr (p, offset); | |
5858 | *p++ = ','; | |
5859 | p += hexnumstr (p, lm); | |
5860 | *p++ = '\0'; | |
5861 | ||
6d820c5c DJ |
5862 | putpkt (rs->buf); |
5863 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5864 | result = packet_ok (rs->buf, &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 5865 | if (result == PACKET_OK) |
38691318 KB |
5866 | { |
5867 | ULONGEST result; | |
5868 | ||
6d820c5c | 5869 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
5870 | return result; |
5871 | } | |
571dd617 | 5872 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
5873 | throw_error (TLS_GENERIC_ERROR, |
5874 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 5875 | else |
109c3e39 AC |
5876 | throw_error (TLS_GENERIC_ERROR, |
5877 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
5878 | } |
5879 | else | |
109c3e39 AC |
5880 | throw_error (TLS_GENERIC_ERROR, |
5881 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
5882 | /* Not reached. */ |
5883 | return 0; | |
5884 | } | |
5885 | ||
c906108c | 5886 | static void |
fba45db2 | 5887 | init_remote_ops (void) |
c906108c | 5888 | { |
c5aa993b | 5889 | remote_ops.to_shortname = "remote"; |
c906108c | 5890 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 5891 | remote_ops.to_doc = |
c906108c | 5892 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
5893 | Specify the serial device it is connected to\n\ |
5894 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
5895 | remote_ops.to_open = remote_open; |
5896 | remote_ops.to_close = remote_close; | |
c906108c | 5897 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 5898 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 5899 | remote_ops.to_resume = remote_resume; |
c906108c SS |
5900 | remote_ops.to_wait = remote_wait; |
5901 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
5902 | remote_ops.to_store_registers = remote_store_registers; | |
5903 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 5904 | remote_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 5905 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
5906 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5907 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
5908 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
5909 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
5910 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; | |
5911 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
5912 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
5913 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
5914 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b JM |
5915 | remote_ops.to_kill = remote_kill; |
5916 | remote_ops.to_load = generic_load; | |
c906108c SS |
5917 | remote_ops.to_mourn_inferior = remote_mourn; |
5918 | remote_ops.to_thread_alive = remote_thread_alive; | |
0f71a2f6 | 5919 | remote_ops.to_find_new_threads = remote_threads_info; |
0caabb7e | 5920 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 5921 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
c906108c | 5922 | remote_ops.to_stop = remote_stop; |
4b8a223f | 5923 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 5924 | remote_ops.to_rcmd = remote_rcmd; |
38691318 | 5925 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; |
c906108c | 5926 | remote_ops.to_stratum = process_stratum; |
c5aa993b JM |
5927 | remote_ops.to_has_all_memory = 1; |
5928 | remote_ops.to_has_memory = 1; | |
5929 | remote_ops.to_has_stack = 1; | |
5930 | remote_ops.to_has_registers = 1; | |
5931 | remote_ops.to_has_execution = 1; | |
5932 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
5933 | remote_ops.to_magic = OPS_MAGIC; | |
fd79ecee | 5934 | remote_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
5935 | remote_ops.to_flash_erase = remote_flash_erase; |
5936 | remote_ops.to_flash_done = remote_flash_done; | |
c906108c SS |
5937 | } |
5938 | ||
5939 | /* Set up the extended remote vector by making a copy of the standard | |
5940 | remote vector and adding to it. */ | |
5941 | ||
5942 | static void | |
fba45db2 | 5943 | init_extended_remote_ops (void) |
c906108c SS |
5944 | { |
5945 | extended_remote_ops = remote_ops; | |
5946 | ||
0f71a2f6 | 5947 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 5948 | extended_remote_ops.to_longname = |
c906108c | 5949 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 5950 | extended_remote_ops.to_doc = |
c906108c SS |
5951 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
5952 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 5953 | extended_remote_ops.to_open = extended_remote_open; |
c906108c SS |
5954 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
5955 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
0f71a2f6 JM |
5956 | } |
5957 | ||
6426a772 JM |
5958 | static int |
5959 | remote_can_async_p (void) | |
5960 | { | |
23860348 | 5961 | /* We're async whenever the serial device is. */ |
2cd58942 | 5962 | return (current_target.to_async_mask_value) && serial_can_async_p (remote_desc); |
6426a772 JM |
5963 | } |
5964 | ||
5965 | static int | |
5966 | remote_is_async_p (void) | |
5967 | { | |
23860348 | 5968 | /* We're async whenever the serial device is. */ |
2cd58942 | 5969 | return (current_target.to_async_mask_value) && serial_is_async_p (remote_desc); |
6426a772 JM |
5970 | } |
5971 | ||
2acceee2 JM |
5972 | /* Pass the SERIAL event on and up to the client. One day this code |
5973 | will be able to delay notifying the client of an event until the | |
23860348 | 5974 | point where an entire packet has been received. */ |
2acceee2 | 5975 | |
2bc416ba | 5976 | static void (*async_client_callback) (enum inferior_event_type event_type, |
23860348 | 5977 | void *context); |
2acceee2 JM |
5978 | static void *async_client_context; |
5979 | static serial_event_ftype remote_async_serial_handler; | |
5980 | ||
6426a772 | 5981 | static void |
819cc324 | 5982 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 5983 | { |
2acceee2 JM |
5984 | /* Don't propogate error information up to the client. Instead let |
5985 | the client find out about the error by querying the target. */ | |
5986 | async_client_callback (INF_REG_EVENT, async_client_context); | |
5987 | } | |
5988 | ||
5989 | static void | |
2bc416ba | 5990 | remote_async (void (*callback) (enum inferior_event_type event_type, |
23860348 | 5991 | void *context), void *context) |
2acceee2 | 5992 | { |
ed9a39eb | 5993 | if (current_target.to_async_mask_value == 0) |
8e65ff28 | 5994 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5995 | _("Calling remote_async when async is masked")); |
ed9a39eb | 5996 | |
2acceee2 JM |
5997 | if (callback != NULL) |
5998 | { | |
2cd58942 | 5999 | serial_async (remote_desc, remote_async_serial_handler, NULL); |
2acceee2 JM |
6000 | async_client_callback = callback; |
6001 | async_client_context = context; | |
6002 | } | |
6003 | else | |
2cd58942 | 6004 | serial_async (remote_desc, NULL, NULL); |
6426a772 JM |
6005 | } |
6006 | ||
43ff13b4 JM |
6007 | /* Target async and target extended-async. |
6008 | ||
6009 | This are temporary targets, until it is all tested. Eventually | |
6010 | async support will be incorporated int the usual 'remote' | |
23860348 | 6011 | target. */ |
43ff13b4 JM |
6012 | |
6013 | static void | |
c2d11a7d | 6014 | init_remote_async_ops (void) |
43ff13b4 JM |
6015 | { |
6016 | remote_async_ops.to_shortname = "async"; | |
2bc416ba | 6017 | remote_async_ops.to_longname = |
23860348 | 6018 | "Remote serial target in async version of the gdb-specific protocol"; |
c5aa993b | 6019 | remote_async_ops.to_doc = |
43ff13b4 JM |
6020 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
6021 | Specify the serial device it is connected to (e.g. /dev/ttya)."; | |
c5aa993b JM |
6022 | remote_async_ops.to_open = remote_async_open; |
6023 | remote_async_ops.to_close = remote_close; | |
6ad8ae5c DJ |
6024 | remote_async_ops.to_detach = remote_detach; |
6025 | remote_async_ops.to_disconnect = remote_disconnect; | |
c5aa993b JM |
6026 | remote_async_ops.to_resume = remote_async_resume; |
6027 | remote_async_ops.to_wait = remote_async_wait; | |
6028 | remote_async_ops.to_fetch_registers = remote_fetch_registers; | |
6029 | remote_async_ops.to_store_registers = remote_store_registers; | |
6030 | remote_async_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 6031 | remote_async_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 6032 | remote_async_ops.to_files_info = remote_files_info; |
43ff13b4 JM |
6033 | remote_async_ops.to_insert_breakpoint = remote_insert_breakpoint; |
6034 | remote_async_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
6035 | remote_async_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
6036 | remote_async_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
6037 | remote_async_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
6038 | remote_async_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
6039 | remote_async_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
6040 | remote_async_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; | |
6041 | remote_async_ops.to_stopped_data_address = remote_stopped_data_address; | |
6426a772 JM |
6042 | remote_async_ops.to_terminal_inferior = remote_async_terminal_inferior; |
6043 | remote_async_ops.to_terminal_ours = remote_async_terminal_ours; | |
c5aa993b JM |
6044 | remote_async_ops.to_kill = remote_async_kill; |
6045 | remote_async_ops.to_load = generic_load; | |
53a5351d | 6046 | remote_async_ops.to_mourn_inferior = remote_async_mourn; |
c5aa993b JM |
6047 | remote_async_ops.to_thread_alive = remote_thread_alive; |
6048 | remote_async_ops.to_find_new_threads = remote_threads_info; | |
cf759d3b ND |
6049 | remote_async_ops.to_pid_to_str = remote_pid_to_str; |
6050 | remote_async_ops.to_extra_thread_info = remote_threads_extra_info; | |
43ff13b4 | 6051 | remote_async_ops.to_stop = remote_stop; |
4b8a223f | 6052 | remote_async_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 6053 | remote_async_ops.to_rcmd = remote_rcmd; |
c5aa993b JM |
6054 | remote_async_ops.to_stratum = process_stratum; |
6055 | remote_async_ops.to_has_all_memory = 1; | |
6056 | remote_async_ops.to_has_memory = 1; | |
6057 | remote_async_ops.to_has_stack = 1; | |
6058 | remote_async_ops.to_has_registers = 1; | |
6059 | remote_async_ops.to_has_execution = 1; | |
6060 | remote_async_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
6426a772 JM |
6061 | remote_async_ops.to_can_async_p = remote_can_async_p; |
6062 | remote_async_ops.to_is_async_p = remote_is_async_p; | |
6063 | remote_async_ops.to_async = remote_async; | |
ed9a39eb | 6064 | remote_async_ops.to_async_mask_value = 1; |
c5aa993b | 6065 | remote_async_ops.to_magic = OPS_MAGIC; |
fd79ecee | 6066 | remote_async_ops.to_memory_map = remote_memory_map; |
a76d924d DJ |
6067 | remote_async_ops.to_flash_erase = remote_flash_erase; |
6068 | remote_async_ops.to_flash_done = remote_flash_done; | |
43ff13b4 JM |
6069 | } |
6070 | ||
6071 | /* Set up the async extended remote vector by making a copy of the standard | |
6072 | remote vector and adding to it. */ | |
6073 | ||
6074 | static void | |
c2d11a7d | 6075 | init_extended_async_remote_ops (void) |
43ff13b4 JM |
6076 | { |
6077 | extended_async_remote_ops = remote_async_ops; | |
6078 | ||
6079 | extended_async_remote_ops.to_shortname = "extended-async"; | |
c5aa993b | 6080 | extended_async_remote_ops.to_longname = |
43ff13b4 | 6081 | "Extended remote serial target in async gdb-specific protocol"; |
c5aa993b | 6082 | extended_async_remote_ops.to_doc = |
43ff13b4 JM |
6083 | "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\ |
6084 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 6085 | extended_async_remote_ops.to_open = extended_remote_async_open; |
43ff13b4 JM |
6086 | extended_async_remote_ops.to_create_inferior = extended_remote_async_create_inferior; |
6087 | extended_async_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
6088 | } | |
6089 | ||
5a2468f5 | 6090 | static void |
c2d11a7d | 6091 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 6092 | { |
5a2468f5 JM |
6093 | } |
6094 | ||
d471ea57 AC |
6095 | static void |
6096 | show_remote_cmd (char *args, int from_tty) | |
6097 | { | |
37a105a1 DJ |
6098 | /* We can't just use cmd_show_list here, because we want to skip |
6099 | the redundant "show remote Z-packet". */ | |
6100 | struct cleanup *showlist_chain; | |
6101 | struct cmd_list_element *list = remote_show_cmdlist; | |
6102 | ||
6103 | showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist"); | |
6104 | for (; list != NULL; list = list->next) | |
6105 | if (strcmp (list->name, "Z-packet") == 0) | |
6106 | continue; | |
6107 | else if (list->type == show_cmd) | |
6108 | { | |
6109 | struct cleanup *option_chain | |
6110 | = make_cleanup_ui_out_tuple_begin_end (uiout, "option"); | |
6111 | ui_out_field_string (uiout, "name", list->name); | |
6112 | ui_out_text (uiout, ": "); | |
6113 | do_setshow_command ((char *) NULL, from_tty, list); | |
6114 | /* Close the tuple. */ | |
6115 | do_cleanups (option_chain); | |
6116 | } | |
d471ea57 | 6117 | } |
5a2468f5 | 6118 | |
0f71a2f6 | 6119 | static void |
fba45db2 | 6120 | build_remote_gdbarch_data (void) |
0f71a2f6 | 6121 | { |
d696208f | 6122 | remote_address_size = TARGET_ADDR_BIT; |
0f71a2f6 JM |
6123 | } |
6124 | ||
23860348 | 6125 | /* Saved pointer to previous owner of the new_objfile event. */ |
dc8acb97 MS |
6126 | static void (*remote_new_objfile_chain) (struct objfile *); |
6127 | ||
23860348 | 6128 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
6129 | static void |
6130 | remote_new_objfile (struct objfile *objfile) | |
6131 | { | |
23860348 | 6132 | if (remote_desc != 0) /* Have a remote connection. */ |
dc8acb97 MS |
6133 | { |
6134 | remote_check_symbols (objfile); | |
6135 | } | |
23860348 | 6136 | /* Call predecessor on chain, if any. */ |
dc8acb97 MS |
6137 | if (remote_new_objfile_chain != 0 && |
6138 | remote_desc == 0) | |
6139 | remote_new_objfile_chain (objfile); | |
6140 | } | |
6141 | ||
c906108c | 6142 | void |
fba45db2 | 6143 | _initialize_remote (void) |
c906108c | 6144 | { |
ea9c271d DJ |
6145 | struct remote_state *rs; |
6146 | ||
0f71a2f6 | 6147 | /* architecture specific data */ |
2bc416ba | 6148 | remote_gdbarch_data_handle = |
23860348 | 6149 | gdbarch_data_register_post_init (init_remote_state); |
d01949b6 AC |
6150 | |
6151 | /* Old tacky stuff. NOTE: This comes after the remote protocol so | |
6152 | that the remote protocol has been initialized. */ | |
046a4708 AC |
6153 | DEPRECATED_REGISTER_GDBARCH_SWAP (remote_address_size); |
6154 | deprecated_register_gdbarch_swap (NULL, 0, build_remote_gdbarch_data); | |
0f71a2f6 | 6155 | |
ea9c271d DJ |
6156 | /* Initialize the per-target state. At the moment there is only one |
6157 | of these, not one per target. Only one target is active at a | |
6158 | time. The default buffer size is unimportant; it will be expanded | |
6159 | whenever a larger buffer is needed. */ | |
0b83947e | 6160 | rs = get_remote_state_raw (); |
ea9c271d DJ |
6161 | rs->buf_size = 400; |
6162 | rs->buf = xmalloc (rs->buf_size); | |
6163 | ||
c906108c SS |
6164 | init_remote_ops (); |
6165 | add_target (&remote_ops); | |
6166 | ||
6167 | init_extended_remote_ops (); | |
6168 | add_target (&extended_remote_ops); | |
cce74817 | 6169 | |
43ff13b4 JM |
6170 | init_remote_async_ops (); |
6171 | add_target (&remote_async_ops); | |
6172 | ||
6173 | init_extended_async_remote_ops (); | |
6174 | add_target (&extended_async_remote_ops); | |
6175 | ||
dc8acb97 | 6176 | /* Hook into new objfile notification. */ |
9a4105ab AC |
6177 | remote_new_objfile_chain = deprecated_target_new_objfile_hook; |
6178 | deprecated_target_new_objfile_hook = remote_new_objfile; | |
dc8acb97 | 6179 | |
c906108c SS |
6180 | #if 0 |
6181 | init_remote_threadtests (); | |
6182 | #endif | |
6183 | ||
23860348 | 6184 | /* set/show remote ... */ |
d471ea57 | 6185 | |
1bedd215 | 6186 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
6187 | Remote protocol specific variables\n\ |
6188 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 6189 | the packets being used"), |
cff3e48b | 6190 | &remote_set_cmdlist, "set remote ", |
23860348 | 6191 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 6192 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
6193 | Remote protocol specific variables\n\ |
6194 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 6195 | the packets being used"), |
cff3e48b | 6196 | &remote_show_cmdlist, "show remote ", |
23860348 | 6197 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 6198 | |
1a966eab AC |
6199 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
6200 | Compare section data on target to the exec file.\n\ | |
6201 | Argument is a single section name (default: all loaded sections)."), | |
c906108c SS |
6202 | &cmdlist); |
6203 | ||
1a966eab AC |
6204 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
6205 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
6206 | maintenance packet TEXT\n\ |
6207 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
6208 | this command sends the string TEXT to the inferior, and displays the\n\ | |
6209 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 6210 | terminating `#' character and checksum."), |
c906108c SS |
6211 | &maintenancelist); |
6212 | ||
7915a72c AC |
6213 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
6214 | Set whether to send break if interrupted."), _("\ | |
6215 | Show whether to send break if interrupted."), _("\ | |
6216 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
2c5b56ce | 6217 | NULL, NULL, /* FIXME: i18n: Whether to send break if interrupted is %s. */ |
e707bbc2 | 6218 | &setlist, &showlist); |
c906108c | 6219 | |
23860348 | 6220 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 6221 | |
1a966eab AC |
6222 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
6223 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 6224 | &setlist); |
1a966eab AC |
6225 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
6226 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
6227 | &showlist); |
6228 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
6229 | set_memory_write_packet_size, _("\ |
6230 | Set the maximum number of bytes per memory-write packet.\n\ | |
6231 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
6232 | default packet size. The actual limit is further reduced\n\ | |
6233 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
6234 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
6235 | &remote_set_cmdlist); |
6236 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
6237 | set_memory_read_packet_size, _("\ |
6238 | Set the maximum number of bytes per memory-read packet.\n\ | |
6239 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
6240 | default packet size. The actual limit is further reduced\n\ | |
6241 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
6242 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
6243 | &remote_set_cmdlist); |
6244 | add_cmd ("memory-write-packet-size", no_class, | |
6245 | show_memory_write_packet_size, | |
1a966eab | 6246 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
6247 | &remote_show_cmdlist); |
6248 | add_cmd ("memory-read-packet-size", no_class, | |
6249 | show_memory_read_packet_size, | |
1a966eab | 6250 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 6251 | &remote_show_cmdlist); |
c906108c | 6252 | |
b3f42336 | 6253 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
6254 | &remote_hw_watchpoint_limit, _("\ |
6255 | Set the maximum number of target hardware watchpoints."), _("\ | |
6256 | Show the maximum number of target hardware watchpoints."), _("\ | |
6257 | Specify a negative limit for unlimited."), | |
2c5b56ce | 6258 | NULL, NULL, /* FIXME: i18n: The maximum number of target hardware watchpoints is %s. */ |
b3f42336 AC |
6259 | &remote_set_cmdlist, &remote_show_cmdlist); |
6260 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, | |
7915a72c AC |
6261 | &remote_hw_breakpoint_limit, _("\ |
6262 | Set the maximum number of target hardware breakpoints."), _("\ | |
6263 | Show the maximum number of target hardware breakpoints."), _("\ | |
6264 | Specify a negative limit for unlimited."), | |
2c5b56ce | 6265 | NULL, NULL, /* FIXME: i18n: The maximum number of target hardware breakpoints is %s. */ |
b3f42336 | 6266 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 6267 | |
4d28ad1e AC |
6268 | add_setshow_integer_cmd ("remoteaddresssize", class_obscure, |
6269 | &remote_address_size, _("\ | |
6270 | Set the maximum size of the address (in bits) in a memory packet."), _("\ | |
6271 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
6272 | NULL, | |
6273 | NULL, /* FIXME: i18n: */ | |
6274 | &setlist, &showlist); | |
c906108c | 6275 | |
444abaca | 6276 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 6277 | "X", "binary-download", 1); |
0f71a2f6 | 6278 | |
444abaca | 6279 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 6280 | "vCont", "verbose-resume", 0); |
506fb367 | 6281 | |
444abaca | 6282 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 6283 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 6284 | |
444abaca | 6285 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 6286 | "P", "set-register", 1); |
d471ea57 | 6287 | |
444abaca | 6288 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 6289 | "p", "fetch-register", 1); |
b96ec7ac | 6290 | |
444abaca | 6291 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 6292 | "Z0", "software-breakpoint", 0); |
d471ea57 | 6293 | |
444abaca | 6294 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 6295 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 6296 | |
444abaca | 6297 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 6298 | "Z2", "write-watchpoint", 0); |
d471ea57 | 6299 | |
444abaca | 6300 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 6301 | "Z3", "read-watchpoint", 0); |
d471ea57 | 6302 | |
444abaca | 6303 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 6304 | "Z4", "access-watchpoint", 0); |
d471ea57 | 6305 | |
0876f84a DJ |
6306 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
6307 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 6308 | |
fd79ecee DJ |
6309 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
6310 | "qXfer:memory-map:read", "memory-map", 0); | |
6311 | ||
444abaca | 6312 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 6313 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
6314 | 0); |
6315 | ||
be2a5f71 DJ |
6316 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
6317 | "qSupported", "supported-packets", 0); | |
6318 | ||
37a105a1 DJ |
6319 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
6320 | Z sub-packet has its own set and show commands, but users may | |
6321 | have sets to this variable in their .gdbinit files (or in their | |
6322 | documentation). */ | |
e9e68a56 | 6323 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
6324 | &remote_Z_packet_detect, _("\ |
6325 | Set use of remote protocol `Z' packets"), _("\ | |
6326 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 6327 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 6328 | packets."), |
e9e68a56 | 6329 | set_remote_protocol_Z_packet_cmd, |
2c5b56ce | 6330 | show_remote_protocol_Z_packet_cmd, /* FIXME: i18n: Use of remote protocol `Z' packets is %s. */ |
e9e68a56 | 6331 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 CV |
6332 | |
6333 | /* Eventually initialize fileio. See fileio.c */ | |
6334 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
c906108c | 6335 | } |