Commit | Line | Data |
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c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c | 2 | |
197e01b6 | 3 | Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, |
24b06219 | 4 | 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 |
29182b13 | 5 | Free Software Foundation, Inc. |
c906108c | 6 | |
c5aa993b JM |
7 | This file is part of GDB. |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2 of the License, or | |
12 | (at your option) any later version. | |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with this program; if not, write to the Free Software | |
197e01b6 EZ |
21 | Foundation, Inc., 51 Franklin Street, Fifth Floor, |
22 | Boston, MA 02110-1301, USA. */ | |
c5aa993b | 23 | |
23860348 | 24 | /* See the GDB User Guide for details of the GDB remote protocol. */ |
c5aa993b | 25 | |
c906108c SS |
26 | #include "defs.h" |
27 | #include "gdb_string.h" | |
28 | #include <ctype.h> | |
29 | #include <fcntl.h> | |
c906108c SS |
30 | #include "inferior.h" |
31 | #include "bfd.h" | |
32 | #include "symfile.h" | |
60250e8b | 33 | #include "exceptions.h" |
c906108c | 34 | #include "target.h" |
c5aa993b | 35 | /*#include "terminal.h" */ |
c906108c SS |
36 | #include "gdbcmd.h" |
37 | #include "objfiles.h" | |
38 | #include "gdb-stabs.h" | |
39 | #include "gdbthread.h" | |
c2c6d25f | 40 | #include "remote.h" |
4e052eda | 41 | #include "regcache.h" |
fd0407d6 | 42 | #include "value.h" |
1ff9c3d6 | 43 | #include "gdb_assert.h" |
6867ae3e | 44 | #include "observer.h" |
a77053c2 | 45 | #include "solib.h" |
37a105a1 DJ |
46 | #include "cli/cli-decode.h" |
47 | #include "cli/cli-setshow.h" | |
c906108c | 48 | |
7a292a7a | 49 | #include <ctype.h> |
9846de1b | 50 | #include <sys/time.h> |
c906108c | 51 | |
43ff13b4 | 52 | #include "event-loop.h" |
c2c6d25f | 53 | #include "event-top.h" |
2acceee2 | 54 | #include "inf-loop.h" |
43ff13b4 | 55 | |
c906108c SS |
56 | #include <signal.h> |
57 | #include "serial.h" | |
58 | ||
6240bebf MS |
59 | #include "gdbcore.h" /* for exec_bfd */ |
60 | ||
449092f6 CV |
61 | #include "remote-fileio.h" |
62 | ||
23860348 | 63 | /* Prototypes for local functions. */ |
6426a772 JM |
64 | static void cleanup_sigint_signal_handler (void *dummy); |
65 | static void initialize_sigint_signal_handler (void); | |
6d820c5c | 66 | static int getpkt_sane (char **buf, long *sizeof_buf, int forever); |
6426a772 | 67 | |
a14ed312 KB |
68 | static void handle_remote_sigint (int); |
69 | static void handle_remote_sigint_twice (int); | |
70 | static void async_remote_interrupt (gdb_client_data); | |
71 | void async_remote_interrupt_twice (gdb_client_data); | |
43ff13b4 | 72 | |
a14ed312 | 73 | static void build_remote_gdbarch_data (void); |
0f71a2f6 | 74 | |
a14ed312 | 75 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 76 | |
a14ed312 | 77 | static void remote_prepare_to_store (void); |
c906108c | 78 | |
a14ed312 | 79 | static void remote_fetch_registers (int regno); |
c906108c | 80 | |
39f77062 KB |
81 | static void remote_resume (ptid_t ptid, int step, |
82 | enum target_signal siggnal); | |
83 | static void remote_async_resume (ptid_t ptid, int step, | |
a14ed312 | 84 | enum target_signal siggnal); |
a14ed312 KB |
85 | static void remote_open (char *name, int from_tty); |
86 | static void remote_async_open (char *name, int from_tty); | |
c906108c | 87 | |
a14ed312 KB |
88 | static void extended_remote_open (char *name, int from_tty); |
89 | static void extended_remote_async_open (char *name, int from_tty); | |
c906108c | 90 | |
92d1e331 DJ |
91 | static void remote_open_1 (char *, int, struct target_ops *, int extended_p, |
92 | int async_p); | |
c906108c | 93 | |
a14ed312 | 94 | static void remote_close (int quitting); |
c906108c | 95 | |
a14ed312 | 96 | static void remote_store_registers (int regno); |
c906108c | 97 | |
a14ed312 KB |
98 | static void remote_mourn (void); |
99 | static void remote_async_mourn (void); | |
c906108c | 100 | |
a14ed312 | 101 | static void extended_remote_restart (void); |
c906108c | 102 | |
a14ed312 | 103 | static void extended_remote_mourn (void); |
c906108c | 104 | |
a14ed312 | 105 | static void remote_mourn_1 (struct target_ops *); |
c906108c | 106 | |
6d820c5c | 107 | static void remote_send (char **buf, long *sizeof_buf_p); |
c906108c | 108 | |
a14ed312 | 109 | static int readchar (int timeout); |
c906108c | 110 | |
39f77062 KB |
111 | static ptid_t remote_wait (ptid_t ptid, |
112 | struct target_waitstatus *status); | |
113 | static ptid_t remote_async_wait (ptid_t ptid, | |
114 | struct target_waitstatus *status); | |
c906108c | 115 | |
a14ed312 KB |
116 | static void remote_kill (void); |
117 | static void remote_async_kill (void); | |
c906108c | 118 | |
a14ed312 | 119 | static int tohex (int nib); |
c906108c | 120 | |
a14ed312 | 121 | static void remote_detach (char *args, int from_tty); |
c906108c | 122 | |
a14ed312 | 123 | static void remote_interrupt (int signo); |
c906108c | 124 | |
a14ed312 | 125 | static void remote_interrupt_twice (int signo); |
7a292a7a | 126 | |
a14ed312 | 127 | static void interrupt_query (void); |
c906108c | 128 | |
a14ed312 | 129 | static void set_thread (int, int); |
c906108c | 130 | |
39f77062 | 131 | static int remote_thread_alive (ptid_t); |
c906108c | 132 | |
a14ed312 | 133 | static void get_offsets (void); |
c906108c | 134 | |
6d820c5c DJ |
135 | static void skip_frame (void); |
136 | ||
137 | static long read_frame (char **buf_p, long *sizeof_buf); | |
c906108c | 138 | |
a14ed312 | 139 | static int hexnumlen (ULONGEST num); |
c906108c | 140 | |
a14ed312 | 141 | static void init_remote_ops (void); |
c906108c | 142 | |
a14ed312 | 143 | static void init_extended_remote_ops (void); |
c906108c | 144 | |
a14ed312 | 145 | static void remote_stop (void); |
c906108c | 146 | |
a14ed312 | 147 | static int ishex (int ch, int *val); |
c906108c | 148 | |
a14ed312 | 149 | static int stubhex (int ch); |
c906108c | 150 | |
a14ed312 | 151 | static int hexnumstr (char *, ULONGEST); |
c906108c | 152 | |
a14ed312 | 153 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 154 | |
a14ed312 | 155 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 156 | |
a14ed312 | 157 | static void print_packet (char *); |
c906108c | 158 | |
a14ed312 | 159 | static unsigned long crc32 (unsigned char *, int, unsigned int); |
c906108c | 160 | |
a14ed312 | 161 | static void compare_sections_command (char *, int); |
c906108c | 162 | |
a14ed312 | 163 | static void packet_command (char *, int); |
c906108c | 164 | |
a14ed312 | 165 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 166 | |
39f77062 | 167 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 168 | |
a14ed312 | 169 | static void remote_find_new_threads (void); |
c906108c | 170 | |
a14ed312 | 171 | static void record_currthread (int currthread); |
c906108c | 172 | |
30559e10 | 173 | static int fromhex (int a); |
c906108c | 174 | |
cfd77fa1 | 175 | static int hex2bin (const char *hex, gdb_byte *bin, int count); |
c906108c | 176 | |
cfd77fa1 | 177 | static int bin2hex (const gdb_byte *bin, char *hex, int count); |
234fa6d1 | 178 | |
a14ed312 | 179 | static int putpkt_binary (char *buf, int cnt); |
c906108c | 180 | |
a14ed312 | 181 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 182 | |
5a2468f5 | 183 | struct packet_config; |
5a2468f5 | 184 | |
a14ed312 | 185 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 186 | |
d471ea57 | 187 | static void update_packet_config (struct packet_config *config); |
5a2468f5 | 188 | |
a14ed312 | 189 | void _initialize_remote (void); |
c906108c | 190 | |
ea9c271d DJ |
191 | /* Description of the remote protocol state for the currently |
192 | connected target. This is per-target state, and independent of the | |
193 | selected architecture. */ | |
194 | ||
195 | struct remote_state | |
196 | { | |
197 | /* A buffer to use for incoming packets, and its current size. The | |
198 | buffer is grown dynamically for larger incoming packets. | |
199 | Outgoing packets may also be constructed in this buffer. | |
200 | BUF_SIZE is always at least REMOTE_PACKET_SIZE; | |
201 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing | |
202 | packets. */ | |
203 | char *buf; | |
204 | long buf_size; | |
205 | }; | |
206 | ||
207 | /* This data could be associated with a target, but we do not always | |
208 | have access to the current target when we need it, so for now it is | |
209 | static. This will be fine for as long as only one target is in use | |
210 | at a time. */ | |
211 | static struct remote_state remote_state; | |
212 | ||
213 | static struct remote_state * | |
214 | get_remote_state (void) | |
215 | { | |
216 | return &remote_state; | |
217 | } | |
218 | ||
219 | /* Description of the remote protocol for a given architecture. */ | |
d01949b6 | 220 | |
ad10f812 AC |
221 | struct packet_reg |
222 | { | |
223 | long offset; /* Offset into G packet. */ | |
224 | long regnum; /* GDB's internal register number. */ | |
225 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 226 | int in_g_packet; /* Always part of G packet. */ |
23860348 MS |
227 | /* long size in bytes; == register_size (current_gdbarch, regnum); |
228 | at present. */ | |
ad10f812 AC |
229 | /* char *name; == REGISTER_NAME (regnum); at present. */ |
230 | }; | |
231 | ||
ea9c271d | 232 | struct remote_arch_state |
d01949b6 | 233 | { |
ad10f812 AC |
234 | /* Description of the remote protocol registers. */ |
235 | long sizeof_g_packet; | |
b323314b AC |
236 | |
237 | /* Description of the remote protocol registers indexed by REGNUM | |
238 | (making an array of NUM_REGS + NUM_PSEUDO_REGS in size). */ | |
239 | struct packet_reg *regs; | |
ad10f812 | 240 | |
d01949b6 AC |
241 | /* This is the size (in chars) of the first response to the ``g'' |
242 | packet. It is used as a heuristic when determining the maximum | |
243 | size of memory-read and memory-write packets. A target will | |
244 | typically only reserve a buffer large enough to hold the ``g'' | |
245 | packet. The size does not include packet overhead (headers and | |
23860348 | 246 | trailers). */ |
d01949b6 AC |
247 | long actual_register_packet_size; |
248 | ||
249 | /* This is the maximum size (in chars) of a non read/write packet. | |
23860348 | 250 | It is also used as a cap on the size of read/write packets. */ |
d01949b6 AC |
251 | long remote_packet_size; |
252 | }; | |
253 | ||
3c3bea1c | 254 | |
d01949b6 AC |
255 | /* Handle for retreving the remote protocol data from gdbarch. */ |
256 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
257 | ||
ea9c271d DJ |
258 | static struct remote_arch_state * |
259 | get_remote_arch_state (void) | |
d01949b6 | 260 | { |
451fbdda | 261 | return gdbarch_data (current_gdbarch, remote_gdbarch_data_handle); |
d01949b6 AC |
262 | } |
263 | ||
264 | static void * | |
265 | init_remote_state (struct gdbarch *gdbarch) | |
266 | { | |
267 | int regnum; | |
ea9c271d DJ |
268 | struct remote_state *rs = get_remote_state (); |
269 | struct remote_arch_state *rsa; | |
270 | ||
271 | rsa = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_arch_state); | |
d01949b6 | 272 | |
ea9c271d | 273 | rsa->sizeof_g_packet = 0; |
ad10f812 | 274 | |
b323314b | 275 | /* Assume a 1:1 regnum<->pnum table. */ |
ea9c271d DJ |
276 | rsa->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, NUM_REGS + NUM_PSEUDO_REGS, |
277 | struct packet_reg); | |
b323314b | 278 | for (regnum = 0; regnum < NUM_REGS + NUM_PSEUDO_REGS; regnum++) |
ad10f812 | 279 | { |
ea9c271d | 280 | struct packet_reg *r = &rsa->regs[regnum]; |
b323314b AC |
281 | r->pnum = regnum; |
282 | r->regnum = regnum; | |
62700349 | 283 | r->offset = DEPRECATED_REGISTER_BYTE (regnum); |
b323314b | 284 | r->in_g_packet = (regnum < NUM_REGS); |
ad10f812 | 285 | /* ...name = REGISTER_NAME (regnum); */ |
7d58c67d | 286 | |
23860348 | 287 | /* Compute packet size by accumulating the size of all registers. */ |
46845f5e | 288 | if (regnum < NUM_REGS) |
ea9c271d | 289 | rsa->sizeof_g_packet += register_size (current_gdbarch, regnum); |
ad10f812 AC |
290 | } |
291 | ||
d01949b6 AC |
292 | /* Default maximum number of characters in a packet body. Many |
293 | remote stubs have a hardwired buffer size of 400 bytes | |
294 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
295 | as the maximum packet-size to ensure that the packet and an extra | |
296 | NUL character can always fit in the buffer. This stops GDB | |
297 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d DJ |
298 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
299 | rsa->remote_packet_size = 400 - 1; | |
d01949b6 | 300 | |
ea9c271d DJ |
301 | /* This one is filled in when a ``g'' packet is received. */ |
302 | rsa->actual_register_packet_size = 0; | |
303 | ||
304 | /* Should rsa->sizeof_g_packet needs more space than the | |
ad10f812 AC |
305 | default, adjust the size accordingly. Remember that each byte is |
306 | encoded as two characters. 32 is the overhead for the packet | |
307 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 308 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 309 | little. */ |
ea9c271d DJ |
310 | if (rsa->sizeof_g_packet > ((rsa->remote_packet_size - 32) / 2)) |
311 | rsa->remote_packet_size = (rsa->sizeof_g_packet * 2 + 32); | |
802188a7 | 312 | |
ea9c271d DJ |
313 | /* Make sure that the packet buffer is plenty big enough for |
314 | this architecture. */ | |
315 | if (rs->buf_size < rsa->remote_packet_size) | |
316 | { | |
317 | rs->buf_size = 2 * rsa->remote_packet_size; | |
318 | rs->buf = xmalloc (rs->buf_size); | |
319 | } | |
6d820c5c | 320 | |
ea9c271d DJ |
321 | return rsa; |
322 | } | |
323 | ||
324 | /* Return the current allowed size of a remote packet. This is | |
325 | inferred from the current architecture, and should be used to | |
326 | limit the length of outgoing packets. */ | |
327 | static long | |
328 | get_remote_packet_size (void) | |
329 | { | |
330 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
331 | ||
332 | return rsa->remote_packet_size; | |
d01949b6 AC |
333 | } |
334 | ||
ad10f812 | 335 | static struct packet_reg * |
ea9c271d | 336 | packet_reg_from_regnum (struct remote_arch_state *rsa, long regnum) |
ad10f812 | 337 | { |
b323314b AC |
338 | if (regnum < 0 && regnum >= NUM_REGS + NUM_PSEUDO_REGS) |
339 | return NULL; | |
340 | else | |
ad10f812 | 341 | { |
ea9c271d | 342 | struct packet_reg *r = &rsa->regs[regnum]; |
b323314b AC |
343 | gdb_assert (r->regnum == regnum); |
344 | return r; | |
ad10f812 | 345 | } |
ad10f812 AC |
346 | } |
347 | ||
348 | static struct packet_reg * | |
ea9c271d | 349 | packet_reg_from_pnum (struct remote_arch_state *rsa, LONGEST pnum) |
ad10f812 | 350 | { |
b323314b AC |
351 | int i; |
352 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) | |
ad10f812 | 353 | { |
ea9c271d | 354 | struct packet_reg *r = &rsa->regs[i]; |
b323314b AC |
355 | if (r->pnum == pnum) |
356 | return r; | |
ad10f812 AC |
357 | } |
358 | return NULL; | |
d01949b6 AC |
359 | } |
360 | ||
3c3bea1c GS |
361 | /* FIXME: graces/2002-08-08: These variables should eventually be |
362 | bound to an instance of the target object (as in gdbarch-tdep()), | |
363 | when such a thing exists. */ | |
364 | ||
365 | /* This is set to the data address of the access causing the target | |
366 | to stop for a watchpoint. */ | |
367 | static CORE_ADDR remote_watch_data_address; | |
368 | ||
94e08568 | 369 | /* This is non-zero if target stopped for a watchpoint. */ |
3c3bea1c GS |
370 | static int remote_stopped_by_watchpoint_p; |
371 | ||
c906108c SS |
372 | static struct target_ops remote_ops; |
373 | ||
374 | static struct target_ops extended_remote_ops; | |
375 | ||
43ff13b4 | 376 | /* Temporary target ops. Just like the remote_ops and |
23860348 | 377 | extended_remote_ops, but with asynchronous support. */ |
43ff13b4 JM |
378 | static struct target_ops remote_async_ops; |
379 | ||
380 | static struct target_ops extended_async_remote_ops; | |
381 | ||
6426a772 JM |
382 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
383 | ``forever'' still use the normal timeout mechanism. This is | |
384 | currently used by the ASYNC code to guarentee that target reads | |
385 | during the initial connect always time-out. Once getpkt has been | |
386 | modified to return a timeout indication and, in turn | |
387 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 388 | this can go away. */ |
6426a772 JM |
389 | static int wait_forever_enabled_p = 1; |
390 | ||
391 | ||
c906108c SS |
392 | /* This variable chooses whether to send a ^C or a break when the user |
393 | requests program interruption. Although ^C is usually what remote | |
394 | systems expect, and that is the default here, sometimes a break is | |
395 | preferable instead. */ | |
396 | ||
397 | static int remote_break; | |
398 | ||
c906108c SS |
399 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
400 | remote_open knows that we don't have a file open when the program | |
401 | starts. */ | |
819cc324 | 402 | static struct serial *remote_desc = NULL; |
c906108c | 403 | |
c906108c SS |
404 | /* This variable sets the number of bits in an address that are to be |
405 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
406 | leading zeros, the entire address would be sent. This variable | |
407 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The | |
408 | initial implementation of remote.c restricted the address sent in | |
409 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
410 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
411 | address was never sent. Since fixing this bug may cause a break in | |
412 | some remote targets this variable is principly provided to | |
23860348 | 413 | facilitate backward compatibility. */ |
c906108c SS |
414 | |
415 | static int remote_address_size; | |
416 | ||
6426a772 JM |
417 | /* Tempoary to track who currently owns the terminal. See |
418 | target_async_terminal_* for more details. */ | |
419 | ||
420 | static int remote_async_terminal_ours_p; | |
421 | ||
11cf8741 | 422 | \f |
11cf8741 | 423 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
424 | memory read/write packet. MIN (rsa->remote_packet_size, |
425 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 426 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
427 | (speed up transfers). The variables ``preferred_*'' (the user |
428 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 429 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
430 | |
431 | struct memory_packet_config | |
432 | { | |
433 | char *name; | |
434 | long size; | |
435 | int fixed_p; | |
436 | }; | |
437 | ||
438 | /* Compute the current size of a read/write packet. Since this makes | |
439 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
440 | ||
441 | static long | |
442 | get_memory_packet_size (struct memory_packet_config *config) | |
443 | { | |
d01949b6 | 444 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
445 | struct remote_arch_state *rsa = get_remote_arch_state (); |
446 | ||
11cf8741 JM |
447 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk |
448 | law?) that some hosts don't cope very well with large alloca() | |
449 | calls. Eventually the alloca() code will be replaced by calls to | |
450 | xmalloc() and make_cleanups() allowing this restriction to either | |
23860348 | 451 | be lifted or removed. */ |
11cf8741 JM |
452 | #ifndef MAX_REMOTE_PACKET_SIZE |
453 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
454 | #endif | |
3de11b2e | 455 | /* NOTE: 20 ensures we can write at least one byte. */ |
11cf8741 | 456 | #ifndef MIN_REMOTE_PACKET_SIZE |
3de11b2e | 457 | #define MIN_REMOTE_PACKET_SIZE 20 |
11cf8741 JM |
458 | #endif |
459 | long what_they_get; | |
460 | if (config->fixed_p) | |
461 | { | |
462 | if (config->size <= 0) | |
463 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
464 | else | |
465 | what_they_get = config->size; | |
466 | } | |
467 | else | |
468 | { | |
ea9c271d | 469 | what_they_get = get_remote_packet_size (); |
23860348 | 470 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
471 | if (config->size > 0 |
472 | && what_they_get > config->size) | |
473 | what_they_get = config->size; | |
23860348 | 474 | /* Limit it to the size of the targets ``g'' response. */ |
ea9c271d DJ |
475 | if ((rsa->actual_register_packet_size) > 0 |
476 | && what_they_get > (rsa->actual_register_packet_size)) | |
477 | what_they_get = (rsa->actual_register_packet_size); | |
11cf8741 JM |
478 | } |
479 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
480 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
481 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
482 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
6d820c5c DJ |
483 | |
484 | /* Make sure there is room in the global buffer for this packet | |
485 | (including its trailing NUL byte). */ | |
486 | if (rs->buf_size < what_they_get + 1) | |
487 | { | |
488 | rs->buf_size = 2 * what_they_get; | |
489 | rs->buf = xrealloc (rs->buf, 2 * what_they_get); | |
490 | } | |
491 | ||
11cf8741 JM |
492 | return what_they_get; |
493 | } | |
494 | ||
495 | /* Update the size of a read/write packet. If they user wants | |
23860348 | 496 | something really big then do a sanity check. */ |
11cf8741 JM |
497 | |
498 | static void | |
499 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
500 | { | |
501 | int fixed_p = config->fixed_p; | |
502 | long size = config->size; | |
503 | if (args == NULL) | |
8a3fe4f8 | 504 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
505 | else if (strcmp (args, "hard") == 0 |
506 | || strcmp (args, "fixed") == 0) | |
507 | fixed_p = 1; | |
508 | else if (strcmp (args, "soft") == 0 | |
509 | || strcmp (args, "limit") == 0) | |
510 | fixed_p = 0; | |
511 | else | |
512 | { | |
513 | char *end; | |
514 | size = strtoul (args, &end, 0); | |
515 | if (args == end) | |
8a3fe4f8 | 516 | error (_("Invalid %s (bad syntax)."), config->name); |
11cf8741 JM |
517 | #if 0 |
518 | /* Instead of explicitly capping the size of a packet to | |
519 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
520 | instead allowed to set the size to something arbitrarily | |
23860348 | 521 | large. */ |
11cf8741 | 522 | if (size > MAX_REMOTE_PACKET_SIZE) |
8a3fe4f8 | 523 | error (_("Invalid %s (too large)."), config->name); |
11cf8741 JM |
524 | #endif |
525 | } | |
23860348 | 526 | /* Extra checks? */ |
11cf8741 JM |
527 | if (fixed_p && !config->fixed_p) |
528 | { | |
e2e0b3e5 AC |
529 | if (! query (_("The target may not be able to correctly handle a %s\n" |
530 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 531 | config->name, size)) |
8a3fe4f8 | 532 | error (_("Packet size not changed.")); |
11cf8741 | 533 | } |
23860348 | 534 | /* Update the config. */ |
11cf8741 JM |
535 | config->fixed_p = fixed_p; |
536 | config->size = size; | |
537 | } | |
538 | ||
539 | static void | |
540 | show_memory_packet_size (struct memory_packet_config *config) | |
541 | { | |
a3f17187 | 542 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 543 | if (config->fixed_p) |
a3f17187 | 544 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
545 | get_memory_packet_size (config)); |
546 | else | |
a3f17187 | 547 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
548 | get_memory_packet_size (config)); |
549 | } | |
550 | ||
551 | static struct memory_packet_config memory_write_packet_config = | |
552 | { | |
553 | "memory-write-packet-size", | |
554 | }; | |
555 | ||
556 | static void | |
557 | set_memory_write_packet_size (char *args, int from_tty) | |
558 | { | |
559 | set_memory_packet_size (args, &memory_write_packet_config); | |
560 | } | |
561 | ||
562 | static void | |
563 | show_memory_write_packet_size (char *args, int from_tty) | |
564 | { | |
565 | show_memory_packet_size (&memory_write_packet_config); | |
566 | } | |
567 | ||
568 | static long | |
569 | get_memory_write_packet_size (void) | |
570 | { | |
571 | return get_memory_packet_size (&memory_write_packet_config); | |
572 | } | |
573 | ||
574 | static struct memory_packet_config memory_read_packet_config = | |
575 | { | |
576 | "memory-read-packet-size", | |
577 | }; | |
578 | ||
579 | static void | |
580 | set_memory_read_packet_size (char *args, int from_tty) | |
581 | { | |
582 | set_memory_packet_size (args, &memory_read_packet_config); | |
583 | } | |
584 | ||
585 | static void | |
586 | show_memory_read_packet_size (char *args, int from_tty) | |
587 | { | |
588 | show_memory_packet_size (&memory_read_packet_config); | |
589 | } | |
590 | ||
591 | static long | |
592 | get_memory_read_packet_size (void) | |
593 | { | |
594 | long size = get_memory_packet_size (&memory_read_packet_config); | |
595 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an | |
596 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
597 | increased beyond this. */ |
598 | if (size > get_remote_packet_size ()) | |
599 | size = get_remote_packet_size (); | |
11cf8741 JM |
600 | return size; |
601 | } | |
602 | ||
11cf8741 | 603 | \f |
5a2468f5 JM |
604 | /* Generic configuration support for packets the stub optionally |
605 | supports. Allows the user to specify the use of the packet as well | |
23860348 | 606 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
607 | |
608 | enum packet_support | |
609 | { | |
610 | PACKET_SUPPORT_UNKNOWN = 0, | |
611 | PACKET_ENABLE, | |
612 | PACKET_DISABLE | |
613 | }; | |
614 | ||
5a2468f5 JM |
615 | struct packet_config |
616 | { | |
5a2468f5 JM |
617 | char *name; |
618 | char *title; | |
7f19b9a2 | 619 | enum auto_boolean detect; |
5a2468f5 JM |
620 | enum packet_support support; |
621 | }; | |
622 | ||
d471ea57 | 623 | /* Analyze a packet's return value and update the packet config |
23860348 | 624 | accordingly. */ |
d471ea57 AC |
625 | |
626 | enum packet_result | |
627 | { | |
628 | PACKET_ERROR, | |
629 | PACKET_OK, | |
630 | PACKET_UNKNOWN | |
631 | }; | |
632 | ||
5a2468f5 | 633 | static void |
d471ea57 | 634 | update_packet_config (struct packet_config *config) |
5a2468f5 | 635 | { |
d471ea57 AC |
636 | switch (config->detect) |
637 | { | |
7f19b9a2 | 638 | case AUTO_BOOLEAN_TRUE: |
d471ea57 AC |
639 | config->support = PACKET_ENABLE; |
640 | break; | |
7f19b9a2 | 641 | case AUTO_BOOLEAN_FALSE: |
d471ea57 AC |
642 | config->support = PACKET_DISABLE; |
643 | break; | |
7f19b9a2 | 644 | case AUTO_BOOLEAN_AUTO: |
d471ea57 AC |
645 | config->support = PACKET_SUPPORT_UNKNOWN; |
646 | break; | |
647 | } | |
5a2468f5 JM |
648 | } |
649 | ||
650 | static void | |
fba45db2 | 651 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
652 | { |
653 | char *support = "internal-error"; | |
654 | switch (config->support) | |
655 | { | |
656 | case PACKET_ENABLE: | |
657 | support = "enabled"; | |
658 | break; | |
659 | case PACKET_DISABLE: | |
660 | support = "disabled"; | |
661 | break; | |
662 | case PACKET_SUPPORT_UNKNOWN: | |
663 | support = "unknown"; | |
664 | break; | |
665 | } | |
666 | switch (config->detect) | |
667 | { | |
7f19b9a2 | 668 | case AUTO_BOOLEAN_AUTO: |
37a105a1 DJ |
669 | printf_filtered (_("Support for the `%s' packet is auto-detected, currently %s.\n"), |
670 | config->name, support); | |
5a2468f5 | 671 | break; |
7f19b9a2 AC |
672 | case AUTO_BOOLEAN_TRUE: |
673 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
674 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
675 | config->name, support); | |
8e248173 | 676 | break; |
5a2468f5 JM |
677 | } |
678 | } | |
679 | ||
680 | static void | |
d471ea57 AC |
681 | add_packet_config_cmd (struct packet_config *config, |
682 | char *name, | |
683 | char *title, | |
e9e68a56 | 684 | cmd_sfunc_ftype *set_func, |
08546159 | 685 | show_value_ftype *show_func, |
d471ea57 AC |
686 | struct cmd_list_element **set_remote_list, |
687 | struct cmd_list_element **show_remote_list, | |
688 | int legacy) | |
689 | { | |
5a2468f5 JM |
690 | char *set_doc; |
691 | char *show_doc; | |
d471ea57 | 692 | char *cmd_name; |
3ed07be4 | 693 | |
5a2468f5 JM |
694 | config->name = name; |
695 | config->title = title; | |
7f19b9a2 | 696 | config->detect = AUTO_BOOLEAN_AUTO; |
8e248173 | 697 | config->support = PACKET_SUPPORT_UNKNOWN; |
b435e160 AC |
698 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
699 | name, title); | |
700 | show_doc = xstrprintf ("Show current use of remote protocol `%s' (%s) packet", | |
701 | name, title); | |
d471ea57 | 702 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 703 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 704 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
2c5b56ce | 705 | &config->detect, set_doc, show_doc, NULL, /* help_doc */ |
e9e68a56 AC |
706 | set_func, show_func, |
707 | set_remote_list, show_remote_list); | |
23860348 | 708 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
709 | if (legacy) |
710 | { | |
711 | char *legacy_name; | |
b435e160 | 712 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 AC |
713 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
714 | set_remote_list); | |
715 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, | |
716 | show_remote_list); | |
717 | } | |
5a2468f5 JM |
718 | } |
719 | ||
d471ea57 AC |
720 | static enum packet_result |
721 | packet_ok (const char *buf, struct packet_config *config) | |
5a2468f5 | 722 | { |
d471ea57 | 723 | if (buf[0] != '\0') |
5a2468f5 | 724 | { |
d471ea57 | 725 | /* The stub recognized the packet request. Check that the |
23860348 | 726 | operation succeeded. */ |
d471ea57 AC |
727 | switch (config->support) |
728 | { | |
729 | case PACKET_SUPPORT_UNKNOWN: | |
730 | if (remote_debug) | |
731 | fprintf_unfiltered (gdb_stdlog, | |
732 | "Packet %s (%s) is supported\n", | |
733 | config->name, config->title); | |
734 | config->support = PACKET_ENABLE; | |
735 | break; | |
736 | case PACKET_DISABLE: | |
8e65ff28 | 737 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 738 | _("packet_ok: attempt to use a disabled packet")); |
d471ea57 AC |
739 | break; |
740 | case PACKET_ENABLE: | |
741 | break; | |
742 | } | |
743 | if (buf[0] == 'O' && buf[1] == 'K' && buf[2] == '\0') | |
23860348 | 744 | /* "OK" - definitly OK. */ |
d471ea57 AC |
745 | return PACKET_OK; |
746 | if (buf[0] == 'E' | |
747 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
748 | && buf[3] == '\0') | |
23860348 | 749 | /* "Enn" - definitly an error. */ |
d471ea57 | 750 | return PACKET_ERROR; |
23860348 | 751 | /* The packet may or may not be OK. Just assume it is. */ |
d471ea57 AC |
752 | return PACKET_OK; |
753 | } | |
754 | else | |
755 | { | |
23860348 | 756 | /* The stub does not support the packet. */ |
d471ea57 AC |
757 | switch (config->support) |
758 | { | |
759 | case PACKET_ENABLE: | |
7f19b9a2 | 760 | if (config->detect == AUTO_BOOLEAN_AUTO) |
d471ea57 | 761 | /* If the stub previously indicated that the packet was |
23860348 | 762 | supported then there is a protocol error.. */ |
8a3fe4f8 | 763 | error (_("Protocol error: %s (%s) conflicting enabled responses."), |
d471ea57 AC |
764 | config->name, config->title); |
765 | else | |
23860348 | 766 | /* The user set it wrong. */ |
8a3fe4f8 | 767 | error (_("Enabled packet %s (%s) not recognized by stub"), |
d471ea57 AC |
768 | config->name, config->title); |
769 | break; | |
770 | case PACKET_SUPPORT_UNKNOWN: | |
771 | if (remote_debug) | |
772 | fprintf_unfiltered (gdb_stdlog, | |
773 | "Packet %s (%s) is NOT supported\n", | |
774 | config->name, config->title); | |
775 | config->support = PACKET_DISABLE; | |
776 | break; | |
777 | case PACKET_DISABLE: | |
778 | break; | |
779 | } | |
780 | return PACKET_UNKNOWN; | |
5a2468f5 JM |
781 | } |
782 | } | |
783 | ||
444abaca DJ |
784 | enum { |
785 | PACKET_vCont = 0, | |
786 | PACKET_X, | |
787 | PACKET_qSymbol, | |
788 | PACKET_P, | |
789 | PACKET_p, | |
790 | PACKET_Z0, | |
791 | PACKET_Z1, | |
792 | PACKET_Z2, | |
793 | PACKET_Z3, | |
794 | PACKET_Z4, | |
795 | PACKET_qPart_auxv, | |
796 | PACKET_qGetTLSAddr, | |
797 | PACKET_MAX | |
798 | }; | |
506fb367 | 799 | |
444abaca | 800 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 MS |
801 | |
802 | static void | |
444abaca DJ |
803 | set_remote_protocol_packet_cmd (char *args, int from_tty, |
804 | struct cmd_list_element *c) | |
dc8acb97 | 805 | { |
444abaca | 806 | struct packet_config *packet; |
dc8acb97 | 807 | |
444abaca DJ |
808 | for (packet = remote_protocol_packets; |
809 | packet < &remote_protocol_packets[PACKET_MAX]; | |
810 | packet++) | |
811 | { | |
812 | if (&packet->detect == c->var) | |
813 | { | |
814 | update_packet_config (packet); | |
815 | return; | |
816 | } | |
817 | } | |
818 | internal_error (__FILE__, __LINE__, "Could not find config for %s", | |
819 | c->name); | |
dc8acb97 MS |
820 | } |
821 | ||
5a2468f5 | 822 | static void |
444abaca DJ |
823 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
824 | struct cmd_list_element *c, | |
825 | const char *value) | |
5a2468f5 | 826 | { |
444abaca | 827 | struct packet_config *packet; |
5a2468f5 | 828 | |
444abaca DJ |
829 | for (packet = remote_protocol_packets; |
830 | packet < &remote_protocol_packets[PACKET_MAX]; | |
831 | packet++) | |
832 | { | |
833 | if (&packet->detect == c->var) | |
834 | { | |
835 | show_packet_config_cmd (packet); | |
836 | return; | |
837 | } | |
838 | } | |
839 | internal_error (__FILE__, __LINE__, "Could not find config for %s", | |
840 | c->name); | |
5a2468f5 JM |
841 | } |
842 | ||
d471ea57 AC |
843 | /* Should we try one of the 'Z' requests? */ |
844 | ||
845 | enum Z_packet_type | |
846 | { | |
847 | Z_PACKET_SOFTWARE_BP, | |
848 | Z_PACKET_HARDWARE_BP, | |
849 | Z_PACKET_WRITE_WP, | |
850 | Z_PACKET_READ_WP, | |
851 | Z_PACKET_ACCESS_WP, | |
852 | NR_Z_PACKET_TYPES | |
853 | }; | |
96baa820 | 854 | |
d471ea57 | 855 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 856 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 857 | |
7f19b9a2 | 858 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
859 | |
860 | static void | |
fba45db2 KB |
861 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
862 | struct cmd_list_element *c) | |
96baa820 | 863 | { |
d471ea57 AC |
864 | int i; |
865 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
866 | { | |
444abaca DJ |
867 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
868 | update_packet_config (&remote_protocol_packets[PACKET_Z0 + i]); | |
d471ea57 | 869 | } |
96baa820 JM |
870 | } |
871 | ||
872 | static void | |
08546159 AC |
873 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
874 | struct cmd_list_element *c, | |
875 | const char *value) | |
96baa820 | 876 | { |
d471ea57 AC |
877 | int i; |
878 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
879 | { | |
444abaca | 880 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 881 | } |
96baa820 JM |
882 | } |
883 | ||
9d1f7ab2 MS |
884 | /* Should we try the 'ThreadInfo' query packet? |
885 | ||
886 | This variable (NOT available to the user: auto-detect only!) | |
887 | determines whether GDB will use the new, simpler "ThreadInfo" | |
888 | query or the older, more complex syntax for thread queries. | |
802188a7 | 889 | This is an auto-detect variable (set to true at each connect, |
9d1f7ab2 MS |
890 | and set to false when the target fails to recognize it). */ |
891 | ||
892 | static int use_threadinfo_query; | |
893 | static int use_threadextra_query; | |
894 | ||
23860348 | 895 | /* Tokens for use by the asynchronous signal handlers for SIGINT. */ |
ae44c0c4 AC |
896 | static void *sigint_remote_twice_token; |
897 | static void *sigint_remote_token; | |
43ff13b4 | 898 | |
c906108c SS |
899 | /* These are pointers to hook functions that may be set in order to |
900 | modify resume/wait behavior for a particular architecture. */ | |
901 | ||
9a4105ab AC |
902 | void (*deprecated_target_resume_hook) (void); |
903 | void (*deprecated_target_wait_loop_hook) (void); | |
c906108c SS |
904 | \f |
905 | ||
c5aa993b | 906 | |
c906108c SS |
907 | /* These are the threads which we last sent to the remote system. |
908 | -1 for all or -2 for not sent yet. */ | |
909 | static int general_thread; | |
cce74817 | 910 | static int continue_thread; |
c906108c SS |
911 | |
912 | /* Call this function as a result of | |
913 | 1) A halt indication (T packet) containing a thread id | |
914 | 2) A direct query of currthread | |
915 | 3) Successful execution of set thread | |
916 | */ | |
917 | ||
918 | static void | |
fba45db2 | 919 | record_currthread (int currthread) |
c906108c | 920 | { |
c906108c | 921 | general_thread = currthread; |
cce74817 | 922 | |
c906108c SS |
923 | /* If this is a new thread, add it to GDB's thread list. |
924 | If we leave it up to WFI to do this, bad things will happen. */ | |
39f77062 | 925 | if (!in_thread_list (pid_to_ptid (currthread))) |
0f71a2f6 | 926 | { |
39f77062 | 927 | add_thread (pid_to_ptid (currthread)); |
8b93c638 | 928 | ui_out_text (uiout, "[New "); |
39f77062 | 929 | ui_out_text (uiout, target_pid_to_str (pid_to_ptid (currthread))); |
8b93c638 | 930 | ui_out_text (uiout, "]\n"); |
0f71a2f6 | 931 | } |
c906108c SS |
932 | } |
933 | ||
934 | #define MAGIC_NULL_PID 42000 | |
935 | ||
936 | static void | |
fba45db2 | 937 | set_thread (int th, int gen) |
c906108c | 938 | { |
d01949b6 | 939 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 940 | char *buf = rs->buf; |
cce74817 | 941 | int state = gen ? general_thread : continue_thread; |
c906108c SS |
942 | |
943 | if (state == th) | |
944 | return; | |
945 | ||
946 | buf[0] = 'H'; | |
947 | buf[1] = gen ? 'g' : 'c'; | |
948 | if (th == MAGIC_NULL_PID) | |
949 | { | |
950 | buf[2] = '0'; | |
951 | buf[3] = '\0'; | |
952 | } | |
953 | else if (th < 0) | |
ea9c271d | 954 | xsnprintf (&buf[2], get_remote_packet_size () - 2, "-%x", -th); |
c906108c | 955 | else |
ea9c271d | 956 | xsnprintf (&buf[2], get_remote_packet_size () - 2, "%x", th); |
c906108c | 957 | putpkt (buf); |
6d820c5c | 958 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 959 | if (gen) |
c5aa993b | 960 | general_thread = th; |
c906108c | 961 | else |
cce74817 | 962 | continue_thread = th; |
c906108c SS |
963 | } |
964 | \f | |
965 | /* Return nonzero if the thread TH is still alive on the remote system. */ | |
966 | ||
967 | static int | |
39f77062 | 968 | remote_thread_alive (ptid_t ptid) |
c906108c | 969 | { |
6d820c5c | 970 | struct remote_state *rs = get_remote_state (); |
39f77062 | 971 | int tid = PIDGET (ptid); |
6d820c5c | 972 | char *buf = rs->buf; |
c906108c | 973 | |
cce74817 | 974 | if (tid < 0) |
ea9c271d | 975 | xsnprintf (buf, get_remote_packet_size (), "T-%08x", -tid); |
c906108c | 976 | else |
ea9c271d | 977 | xsnprintf (buf, get_remote_packet_size (), "T%08x", tid); |
c906108c | 978 | putpkt (buf); |
6d820c5c | 979 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c SS |
980 | return (buf[0] == 'O' && buf[1] == 'K'); |
981 | } | |
982 | ||
983 | /* About these extended threadlist and threadinfo packets. They are | |
984 | variable length packets but, the fields within them are often fixed | |
985 | length. They are redundent enough to send over UDP as is the | |
986 | remote protocol in general. There is a matching unit test module | |
987 | in libstub. */ | |
988 | ||
cce74817 JM |
989 | #define OPAQUETHREADBYTES 8 |
990 | ||
991 | /* a 64 bit opaque identifier */ | |
992 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
993 | ||
23860348 MS |
994 | /* WARNING: This threadref data structure comes from the remote O.S., |
995 | libstub protocol encoding, and remote.c. it is not particularly | |
996 | changable. */ | |
cce74817 JM |
997 | |
998 | /* Right now, the internal structure is int. We want it to be bigger. | |
999 | Plan to fix this. | |
c5aa993b | 1000 | */ |
cce74817 | 1001 | |
23860348 | 1002 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 1003 | |
9d1f7ab2 | 1004 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 1005 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
1006 | |
1007 | struct gdb_ext_thread_info | |
c5aa993b | 1008 | { |
23860348 MS |
1009 | threadref threadid; /* External form of thread reference. */ |
1010 | int active; /* Has state interesting to GDB? | |
1011 | regs, stack. */ | |
1012 | char display[256]; /* Brief state display, name, | |
cedea757 | 1013 | blocked/suspended. */ |
23860348 MS |
1014 | char shortname[32]; /* To be used to name threads. */ |
1015 | char more_display[256]; /* Long info, statistics, queue depth, | |
1016 | whatever. */ | |
c5aa993b | 1017 | }; |
cce74817 JM |
1018 | |
1019 | /* The volume of remote transfers can be limited by submitting | |
1020 | a mask containing bits specifying the desired information. | |
1021 | Use a union of these values as the 'selection' parameter to | |
1022 | get_thread_info. FIXME: Make these TAG names more thread specific. | |
c5aa993b | 1023 | */ |
cce74817 JM |
1024 | |
1025 | #define TAG_THREADID 1 | |
1026 | #define TAG_EXISTS 2 | |
1027 | #define TAG_DISPLAY 4 | |
1028 | #define TAG_THREADNAME 8 | |
c5aa993b | 1029 | #define TAG_MOREDISPLAY 16 |
cce74817 | 1030 | |
23860348 | 1031 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 1032 | |
b2dd6311 | 1033 | char *unpack_varlen_hex (char *buff, ULONGEST *result); |
cce74817 | 1034 | |
a14ed312 | 1035 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 1036 | |
a14ed312 | 1037 | static char *pack_nibble (char *buf, int nibble); |
cce74817 | 1038 | |
23860348 | 1039 | static char *pack_hex_byte (char *pkt, int /* unsigned char */ byte); |
cce74817 | 1040 | |
a14ed312 | 1041 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 1042 | |
a14ed312 | 1043 | static char *pack_int (char *buf, int value); |
cce74817 | 1044 | |
a14ed312 | 1045 | static char *unpack_int (char *buf, int *value); |
cce74817 | 1046 | |
a14ed312 | 1047 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 1048 | |
23860348 | 1049 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 1050 | |
23860348 | 1051 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 1052 | |
23860348 | 1053 | void int_to_threadref (threadref *id, int value); |
cce74817 | 1054 | |
23860348 | 1055 | static int threadref_to_int (threadref *ref); |
cce74817 | 1056 | |
23860348 | 1057 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 1058 | |
23860348 | 1059 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 1060 | |
23860348 MS |
1061 | static char *pack_threadinfo_request (char *pkt, int mode, |
1062 | threadref *id); | |
cce74817 | 1063 | |
a14ed312 | 1064 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 1065 | threadref *expectedref, |
a14ed312 KB |
1066 | struct gdb_ext_thread_info |
1067 | *info); | |
cce74817 JM |
1068 | |
1069 | ||
23860348 MS |
1070 | static int remote_get_threadinfo (threadref *threadid, |
1071 | int fieldset, /*TAG mask */ | |
a14ed312 | 1072 | struct gdb_ext_thread_info *info); |
cce74817 | 1073 | |
a14ed312 KB |
1074 | static char *pack_threadlist_request (char *pkt, int startflag, |
1075 | int threadcount, | |
23860348 | 1076 | threadref *nextthread); |
cce74817 | 1077 | |
a14ed312 KB |
1078 | static int parse_threadlist_response (char *pkt, |
1079 | int result_limit, | |
23860348 MS |
1080 | threadref *original_echo, |
1081 | threadref *resultlist, | |
1082 | int *doneflag); | |
cce74817 | 1083 | |
a14ed312 | 1084 | static int remote_get_threadlist (int startflag, |
23860348 | 1085 | threadref *nextthread, |
a14ed312 KB |
1086 | int result_limit, |
1087 | int *done, | |
23860348 MS |
1088 | int *result_count, |
1089 | threadref *threadlist); | |
cce74817 | 1090 | |
23860348 | 1091 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 1092 | |
a14ed312 KB |
1093 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
1094 | void *context, int looplimit); | |
cce74817 | 1095 | |
23860348 | 1096 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 1097 | |
23860348 | 1098 | /* Encode 64 bits in 16 chars of hex. */ |
c906108c SS |
1099 | |
1100 | static const char hexchars[] = "0123456789abcdef"; | |
1101 | ||
1102 | static int | |
fba45db2 | 1103 | ishex (int ch, int *val) |
c906108c SS |
1104 | { |
1105 | if ((ch >= 'a') && (ch <= 'f')) | |
1106 | { | |
1107 | *val = ch - 'a' + 10; | |
1108 | return 1; | |
1109 | } | |
1110 | if ((ch >= 'A') && (ch <= 'F')) | |
1111 | { | |
1112 | *val = ch - 'A' + 10; | |
1113 | return 1; | |
1114 | } | |
1115 | if ((ch >= '0') && (ch <= '9')) | |
1116 | { | |
1117 | *val = ch - '0'; | |
1118 | return 1; | |
1119 | } | |
1120 | return 0; | |
1121 | } | |
1122 | ||
1123 | static int | |
fba45db2 | 1124 | stubhex (int ch) |
c906108c SS |
1125 | { |
1126 | if (ch >= 'a' && ch <= 'f') | |
1127 | return ch - 'a' + 10; | |
1128 | if (ch >= '0' && ch <= '9') | |
1129 | return ch - '0'; | |
1130 | if (ch >= 'A' && ch <= 'F') | |
1131 | return ch - 'A' + 10; | |
1132 | return -1; | |
1133 | } | |
1134 | ||
1135 | static int | |
fba45db2 | 1136 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
1137 | { |
1138 | int nibble; | |
1139 | int retval = 0; | |
1140 | ||
1141 | while (fieldlength) | |
1142 | { | |
1143 | nibble = stubhex (*buff++); | |
1144 | retval |= nibble; | |
1145 | fieldlength--; | |
1146 | if (fieldlength) | |
1147 | retval = retval << 4; | |
1148 | } | |
1149 | return retval; | |
1150 | } | |
1151 | ||
1152 | char * | |
fba45db2 | 1153 | unpack_varlen_hex (char *buff, /* packet to parse */ |
b2dd6311 | 1154 | ULONGEST *result) |
c906108c SS |
1155 | { |
1156 | int nibble; | |
1157 | int retval = 0; | |
1158 | ||
1159 | while (ishex (*buff, &nibble)) | |
1160 | { | |
1161 | buff++; | |
1162 | retval = retval << 4; | |
1163 | retval |= nibble & 0x0f; | |
1164 | } | |
1165 | *result = retval; | |
1166 | return buff; | |
1167 | } | |
1168 | ||
1169 | static char * | |
fba45db2 | 1170 | unpack_nibble (char *buf, int *val) |
c906108c SS |
1171 | { |
1172 | ishex (*buf++, val); | |
1173 | return buf; | |
1174 | } | |
1175 | ||
1176 | static char * | |
fba45db2 | 1177 | pack_nibble (char *buf, int nibble) |
c906108c SS |
1178 | { |
1179 | *buf++ = hexchars[(nibble & 0x0f)]; | |
1180 | return buf; | |
1181 | } | |
1182 | ||
1183 | static char * | |
fba45db2 | 1184 | pack_hex_byte (char *pkt, int byte) |
c906108c SS |
1185 | { |
1186 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
1187 | *pkt++ = hexchars[(byte & 0xf)]; | |
1188 | return pkt; | |
1189 | } | |
1190 | ||
1191 | static char * | |
fba45db2 | 1192 | unpack_byte (char *buf, int *value) |
c906108c SS |
1193 | { |
1194 | *value = stub_unpack_int (buf, 2); | |
1195 | return buf + 2; | |
1196 | } | |
1197 | ||
1198 | static char * | |
fba45db2 | 1199 | pack_int (char *buf, int value) |
c906108c SS |
1200 | { |
1201 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
1202 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
1203 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
1204 | buf = pack_hex_byte (buf, (value & 0xff)); | |
1205 | return buf; | |
1206 | } | |
1207 | ||
1208 | static char * | |
fba45db2 | 1209 | unpack_int (char *buf, int *value) |
c906108c SS |
1210 | { |
1211 | *value = stub_unpack_int (buf, 8); | |
1212 | return buf + 8; | |
1213 | } | |
1214 | ||
23860348 | 1215 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 1216 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
1217 | |
1218 | static char * | |
fba45db2 | 1219 | pack_string (char *pkt, char *string) |
c906108c SS |
1220 | { |
1221 | char ch; | |
1222 | int len; | |
1223 | ||
1224 | len = strlen (string); | |
1225 | if (len > 200) | |
23860348 | 1226 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
1227 | pkt = pack_hex_byte (pkt, len); |
1228 | while (len-- > 0) | |
1229 | { | |
1230 | ch = *string++; | |
1231 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 1232 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
1233 | *pkt++ = ch; |
1234 | } | |
1235 | return pkt; | |
1236 | } | |
1237 | #endif /* 0 (unused) */ | |
1238 | ||
1239 | static char * | |
fba45db2 | 1240 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
1241 | { |
1242 | while (length--) | |
1243 | *dest++ = *src++; | |
1244 | *dest = '\0'; | |
1245 | return src; | |
1246 | } | |
1247 | ||
1248 | static char * | |
fba45db2 | 1249 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
1250 | { |
1251 | char *limit; | |
1252 | unsigned char *altid; | |
1253 | ||
1254 | altid = (unsigned char *) id; | |
1255 | limit = pkt + BUF_THREAD_ID_SIZE; | |
1256 | while (pkt < limit) | |
1257 | pkt = pack_hex_byte (pkt, *altid++); | |
1258 | return pkt; | |
1259 | } | |
1260 | ||
1261 | ||
1262 | static char * | |
fba45db2 | 1263 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
1264 | { |
1265 | char *altref; | |
1266 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
1267 | int x, y; | |
1268 | ||
1269 | altref = (char *) id; | |
1270 | ||
1271 | while (inbuf < limit) | |
1272 | { | |
1273 | x = stubhex (*inbuf++); | |
1274 | y = stubhex (*inbuf++); | |
1275 | *altref++ = (x << 4) | y; | |
1276 | } | |
1277 | return inbuf; | |
1278 | } | |
1279 | ||
1280 | /* Externally, threadrefs are 64 bits but internally, they are still | |
1281 | ints. This is due to a mismatch of specifications. We would like | |
1282 | to use 64bit thread references internally. This is an adapter | |
1283 | function. */ | |
1284 | ||
1285 | void | |
fba45db2 | 1286 | int_to_threadref (threadref *id, int value) |
c906108c SS |
1287 | { |
1288 | unsigned char *scan; | |
1289 | ||
1290 | scan = (unsigned char *) id; | |
1291 | { | |
1292 | int i = 4; | |
1293 | while (i--) | |
1294 | *scan++ = 0; | |
1295 | } | |
1296 | *scan++ = (value >> 24) & 0xff; | |
1297 | *scan++ = (value >> 16) & 0xff; | |
1298 | *scan++ = (value >> 8) & 0xff; | |
1299 | *scan++ = (value & 0xff); | |
1300 | } | |
1301 | ||
1302 | static int | |
fba45db2 | 1303 | threadref_to_int (threadref *ref) |
c906108c SS |
1304 | { |
1305 | int i, value = 0; | |
1306 | unsigned char *scan; | |
1307 | ||
cfd77fa1 | 1308 | scan = *ref; |
c906108c SS |
1309 | scan += 4; |
1310 | i = 4; | |
1311 | while (i-- > 0) | |
1312 | value = (value << 8) | ((*scan++) & 0xff); | |
1313 | return value; | |
1314 | } | |
1315 | ||
1316 | static void | |
fba45db2 | 1317 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
1318 | { |
1319 | int i; | |
1320 | unsigned char *csrc, *cdest; | |
1321 | ||
1322 | csrc = (unsigned char *) src; | |
1323 | cdest = (unsigned char *) dest; | |
1324 | i = 8; | |
1325 | while (i--) | |
1326 | *cdest++ = *csrc++; | |
1327 | } | |
1328 | ||
1329 | static int | |
fba45db2 | 1330 | threadmatch (threadref *dest, threadref *src) |
c906108c | 1331 | { |
23860348 | 1332 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
1333 | #if 0 |
1334 | unsigned char *srcp, *destp; | |
1335 | int i, result; | |
1336 | srcp = (char *) src; | |
1337 | destp = (char *) dest; | |
1338 | ||
1339 | result = 1; | |
1340 | while (i-- > 0) | |
1341 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
1342 | return result; | |
1343 | #endif | |
1344 | return 1; | |
1345 | } | |
1346 | ||
1347 | /* | |
c5aa993b JM |
1348 | threadid:1, # always request threadid |
1349 | context_exists:2, | |
1350 | display:4, | |
1351 | unique_name:8, | |
1352 | more_display:16 | |
1353 | */ | |
c906108c SS |
1354 | |
1355 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
1356 | ||
1357 | static char * | |
fba45db2 | 1358 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 1359 | { |
23860348 MS |
1360 | *pkt++ = 'q'; /* Info Query */ |
1361 | *pkt++ = 'P'; /* process or thread info */ | |
1362 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 1363 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 1364 | *pkt = '\0'; /* terminate */ |
c906108c SS |
1365 | return pkt; |
1366 | } | |
1367 | ||
23860348 | 1368 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 1369 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 1370 | add more fields as time goes by. */ |
c906108c | 1371 | |
23860348 | 1372 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 1373 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 1374 | fetch registers and its stack? */ |
c5aa993b | 1375 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 1376 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 1377 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 1378 | the process. */ |
c906108c SS |
1379 | |
1380 | static int | |
fba45db2 KB |
1381 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
1382 | struct gdb_ext_thread_info *info) | |
c906108c | 1383 | { |
d01949b6 | 1384 | struct remote_state *rs = get_remote_state (); |
c906108c | 1385 | int mask, length; |
cfd77fa1 | 1386 | int tag; |
c906108c | 1387 | threadref ref; |
6d820c5c | 1388 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
1389 | int retval = 1; |
1390 | ||
23860348 | 1391 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
1392 | info->active = 0; |
1393 | info->display[0] = '\0'; | |
1394 | info->shortname[0] = '\0'; | |
1395 | info->more_display[0] = '\0'; | |
1396 | ||
23860348 MS |
1397 | /* Assume the characters indicating the packet type have been |
1398 | stripped. */ | |
c906108c SS |
1399 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
1400 | pkt = unpack_threadid (pkt, &ref); | |
1401 | ||
1402 | if (mask == 0) | |
8a3fe4f8 | 1403 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 1404 | if (!threadmatch (&ref, expectedref)) |
23860348 | 1405 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 1406 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
1407 | return 0; |
1408 | } | |
1409 | copy_threadref (&info->threadid, &ref); | |
1410 | ||
23860348 | 1411 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 1412 | |
23860348 MS |
1413 | /* Packets are terminated with nulls. */ |
1414 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
1415 | { |
1416 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
1417 | pkt = unpack_byte (pkt, &length); /* length */ |
1418 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 1419 | { |
8a3fe4f8 | 1420 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
1421 | retval = 0; |
1422 | break; | |
1423 | } | |
1424 | if (tag == TAG_THREADID) | |
1425 | { | |
1426 | if (length != 16) | |
1427 | { | |
8a3fe4f8 | 1428 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
1429 | retval = 0; |
1430 | break; | |
1431 | } | |
1432 | pkt = unpack_threadid (pkt, &ref); | |
1433 | mask = mask & ~TAG_THREADID; | |
1434 | continue; | |
1435 | } | |
1436 | if (tag == TAG_EXISTS) | |
1437 | { | |
1438 | info->active = stub_unpack_int (pkt, length); | |
1439 | pkt += length; | |
1440 | mask = mask & ~(TAG_EXISTS); | |
1441 | if (length > 8) | |
1442 | { | |
8a3fe4f8 | 1443 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
1444 | retval = 0; |
1445 | break; | |
1446 | } | |
1447 | continue; | |
1448 | } | |
1449 | if (tag == TAG_THREADNAME) | |
1450 | { | |
1451 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
1452 | mask = mask & ~TAG_THREADNAME; | |
1453 | continue; | |
1454 | } | |
1455 | if (tag == TAG_DISPLAY) | |
1456 | { | |
1457 | pkt = unpack_string (pkt, &info->display[0], length); | |
1458 | mask = mask & ~TAG_DISPLAY; | |
1459 | continue; | |
1460 | } | |
1461 | if (tag == TAG_MOREDISPLAY) | |
1462 | { | |
1463 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
1464 | mask = mask & ~TAG_MOREDISPLAY; | |
1465 | continue; | |
1466 | } | |
8a3fe4f8 | 1467 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 1468 | break; /* Not a tag we know about. */ |
c906108c SS |
1469 | } |
1470 | return retval; | |
1471 | } | |
1472 | ||
1473 | static int | |
fba45db2 KB |
1474 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
1475 | struct gdb_ext_thread_info *info) | |
c906108c | 1476 | { |
d01949b6 | 1477 | struct remote_state *rs = get_remote_state (); |
c906108c | 1478 | int result; |
6d820c5c | 1479 | char *threadinfo_pkt = rs->buf; |
c906108c SS |
1480 | |
1481 | pack_threadinfo_request (threadinfo_pkt, fieldset, threadid); | |
1482 | putpkt (threadinfo_pkt); | |
6d820c5c | 1483 | getpkt (&rs->buf, &rs->buf_size, 0); |
23860348 MS |
1484 | result = remote_unpack_thread_info_response (threadinfo_pkt + 2, |
1485 | threadid, info); | |
c906108c SS |
1486 | return result; |
1487 | } | |
1488 | ||
c906108c SS |
1489 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
1490 | ||
1491 | static char * | |
fba45db2 KB |
1492 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
1493 | threadref *nextthread) | |
c906108c SS |
1494 | { |
1495 | *pkt++ = 'q'; /* info query packet */ | |
1496 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 1497 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
1498 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
1499 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
1500 | *pkt = '\0'; | |
1501 | return pkt; | |
1502 | } | |
1503 | ||
1504 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
1505 | ||
1506 | static int | |
fba45db2 KB |
1507 | parse_threadlist_response (char *pkt, int result_limit, |
1508 | threadref *original_echo, threadref *resultlist, | |
1509 | int *doneflag) | |
c906108c | 1510 | { |
d01949b6 | 1511 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1512 | char *limit; |
1513 | int count, resultcount, done; | |
1514 | ||
1515 | resultcount = 0; | |
1516 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 1517 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 1518 | /* done parse past here */ |
c906108c SS |
1519 | pkt = unpack_byte (pkt, &count); /* count field */ |
1520 | pkt = unpack_nibble (pkt, &done); | |
1521 | /* The first threadid is the argument threadid. */ | |
1522 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
1523 | while ((count-- > 0) && (pkt < limit)) | |
1524 | { | |
1525 | pkt = unpack_threadid (pkt, resultlist++); | |
1526 | if (resultcount++ >= result_limit) | |
1527 | break; | |
1528 | } | |
1529 | if (doneflag) | |
1530 | *doneflag = done; | |
1531 | return resultcount; | |
1532 | } | |
1533 | ||
1534 | static int | |
fba45db2 KB |
1535 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
1536 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 1537 | { |
d01949b6 | 1538 | struct remote_state *rs = get_remote_state (); |
c906108c | 1539 | static threadref echo_nextthread; |
6d820c5c | 1540 | char *threadlist_packet = rs->buf; |
c906108c SS |
1541 | int result = 1; |
1542 | ||
23860348 | 1543 | /* Trancate result limit to be smaller than the packet size. */ |
ea9c271d DJ |
1544 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) >= get_remote_packet_size ()) |
1545 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; | |
c906108c | 1546 | |
6d820c5c DJ |
1547 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
1548 | putpkt (rs->buf); | |
1549 | getpkt (&rs->buf, &rs->buf_size, 0); | |
c906108c SS |
1550 | |
1551 | *result_count = | |
6d820c5c | 1552 | parse_threadlist_response (rs->buf + 2, result_limit, &echo_nextthread, |
c906108c SS |
1553 | threadlist, done); |
1554 | ||
1555 | if (!threadmatch (&echo_nextthread, nextthread)) | |
1556 | { | |
23860348 MS |
1557 | /* FIXME: This is a good reason to drop the packet. */ |
1558 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
1559 | /* Possabilities : |
1560 | retransmit immediatly - race conditions | |
1561 | retransmit after timeout - yes | |
1562 | exit | |
1563 | wait for packet, then exit | |
1564 | */ | |
8a3fe4f8 | 1565 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 1566 | return 0; /* I choose simply exiting. */ |
c906108c SS |
1567 | } |
1568 | if (*result_count <= 0) | |
1569 | { | |
1570 | if (*done != 1) | |
1571 | { | |
8a3fe4f8 | 1572 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
1573 | result = 0; |
1574 | } | |
1575 | return result; /* break; */ | |
1576 | } | |
1577 | if (*result_count > result_limit) | |
1578 | { | |
1579 | *result_count = 0; | |
8a3fe4f8 | 1580 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
1581 | return 0; |
1582 | } | |
1583 | return result; | |
1584 | } | |
1585 | ||
23860348 MS |
1586 | /* This is the interface between remote and threads, remotes upper |
1587 | interface. */ | |
c906108c SS |
1588 | |
1589 | /* remote_find_new_threads retrieves the thread list and for each | |
1590 | thread in the list, looks up the thread in GDB's internal list, | |
1591 | ading the thread if it does not already exist. This involves | |
1592 | getting partial thread lists from the remote target so, polling the | |
1593 | quit_flag is required. */ | |
1594 | ||
1595 | ||
23860348 | 1596 | /* About this many threadisds fit in a packet. */ |
c906108c SS |
1597 | |
1598 | #define MAXTHREADLISTRESULTS 32 | |
1599 | ||
1600 | static int | |
fba45db2 KB |
1601 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
1602 | int looplimit) | |
c906108c SS |
1603 | { |
1604 | int done, i, result_count; | |
1605 | int startflag = 1; | |
1606 | int result = 1; | |
1607 | int loopcount = 0; | |
1608 | static threadref nextthread; | |
1609 | static threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
1610 | ||
1611 | done = 0; | |
1612 | while (!done) | |
1613 | { | |
1614 | if (loopcount++ > looplimit) | |
1615 | { | |
1616 | result = 0; | |
8a3fe4f8 | 1617 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
1618 | break; |
1619 | } | |
1620 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS, | |
1621 | &done, &result_count, resultthreadlist)) | |
1622 | { | |
1623 | result = 0; | |
1624 | break; | |
1625 | } | |
23860348 | 1626 | /* Clear for later iterations. */ |
c906108c SS |
1627 | startflag = 0; |
1628 | /* Setup to resume next batch of thread references, set nextthread. */ | |
1629 | if (result_count >= 1) | |
1630 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |
1631 | i = 0; | |
1632 | while (result_count--) | |
1633 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |
1634 | break; | |
1635 | } | |
1636 | return result; | |
1637 | } | |
1638 | ||
1639 | static int | |
fba45db2 | 1640 | remote_newthread_step (threadref *ref, void *context) |
c906108c | 1641 | { |
39f77062 | 1642 | ptid_t ptid; |
c906108c | 1643 | |
39f77062 KB |
1644 | ptid = pid_to_ptid (threadref_to_int (ref)); |
1645 | ||
1646 | if (!in_thread_list (ptid)) | |
1647 | add_thread (ptid); | |
c906108c SS |
1648 | return 1; /* continue iterator */ |
1649 | } | |
1650 | ||
1651 | #define CRAZY_MAX_THREADS 1000 | |
1652 | ||
39f77062 KB |
1653 | static ptid_t |
1654 | remote_current_thread (ptid_t oldpid) | |
c906108c | 1655 | { |
d01949b6 | 1656 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 1657 | char *buf = rs->buf; |
c906108c SS |
1658 | |
1659 | putpkt ("qC"); | |
6d820c5c | 1660 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 1661 | if (buf[0] == 'Q' && buf[1] == 'C') |
c273b20f JB |
1662 | /* Use strtoul here, so we'll correctly parse values whose highest |
1663 | bit is set. The protocol carries them as a simple series of | |
1664 | hex digits; in the absence of a sign, strtol will see such | |
1665 | values as positive numbers out of range for signed 'long', and | |
1666 | return LONG_MAX to indicate an overflow. */ | |
1667 | return pid_to_ptid (strtoul (&buf[2], NULL, 16)); | |
c906108c SS |
1668 | else |
1669 | return oldpid; | |
1670 | } | |
1671 | ||
802188a7 RM |
1672 | /* Find new threads for info threads command. |
1673 | * Original version, using John Metzler's thread protocol. | |
9d1f7ab2 | 1674 | */ |
cce74817 JM |
1675 | |
1676 | static void | |
fba45db2 | 1677 | remote_find_new_threads (void) |
c906108c | 1678 | { |
c5aa993b JM |
1679 | remote_threadlist_iterator (remote_newthread_step, 0, |
1680 | CRAZY_MAX_THREADS); | |
39f77062 KB |
1681 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) /* ack ack ack */ |
1682 | inferior_ptid = remote_current_thread (inferior_ptid); | |
c906108c SS |
1683 | } |
1684 | ||
9d1f7ab2 MS |
1685 | /* |
1686 | * Find all threads for info threads command. | |
1687 | * Uses new thread protocol contributed by Cisco. | |
1688 | * Falls back and attempts to use the older method (above) | |
1689 | * if the target doesn't respond to the new method. | |
1690 | */ | |
1691 | ||
0f71a2f6 JM |
1692 | static void |
1693 | remote_threads_info (void) | |
1694 | { | |
d01949b6 | 1695 | struct remote_state *rs = get_remote_state (); |
085dd6e6 | 1696 | char *bufp; |
0f71a2f6 JM |
1697 | int tid; |
1698 | ||
1699 | if (remote_desc == 0) /* paranoia */ | |
8a3fe4f8 | 1700 | error (_("Command can only be used when connected to the remote target.")); |
0f71a2f6 | 1701 | |
9d1f7ab2 MS |
1702 | if (use_threadinfo_query) |
1703 | { | |
1704 | putpkt ("qfThreadInfo"); | |
6d820c5c DJ |
1705 | bufp = rs->buf; |
1706 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9d1f7ab2 | 1707 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 1708 | { |
9d1f7ab2 MS |
1709 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
1710 | { | |
1711 | do | |
1712 | { | |
c273b20f JB |
1713 | /* Use strtoul here, so we'll correctly parse values |
1714 | whose highest bit is set. The protocol carries | |
1715 | them as a simple series of hex digits; in the | |
1716 | absence of a sign, strtol will see such values as | |
1717 | positive numbers out of range for signed 'long', | |
1718 | and return LONG_MAX to indicate an overflow. */ | |
1719 | tid = strtoul (bufp, &bufp, 16); | |
39f77062 KB |
1720 | if (tid != 0 && !in_thread_list (pid_to_ptid (tid))) |
1721 | add_thread (pid_to_ptid (tid)); | |
9d1f7ab2 MS |
1722 | } |
1723 | while (*bufp++ == ','); /* comma-separated list */ | |
1724 | putpkt ("qsThreadInfo"); | |
6d820c5c DJ |
1725 | bufp = rs->buf; |
1726 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9d1f7ab2 MS |
1727 | } |
1728 | return; /* done */ | |
1729 | } | |
1730 | } | |
1731 | ||
23860348 | 1732 | /* Else fall back to old method based on jmetzler protocol. */ |
9d1f7ab2 MS |
1733 | use_threadinfo_query = 0; |
1734 | remote_find_new_threads (); | |
1735 | return; | |
1736 | } | |
1737 | ||
802188a7 | 1738 | /* |
9d1f7ab2 MS |
1739 | * Collect a descriptive string about the given thread. |
1740 | * The target may say anything it wants to about the thread | |
1741 | * (typically info about its blocked / runnable state, name, etc.). | |
1742 | * This string will appear in the info threads display. | |
802188a7 | 1743 | * |
9d1f7ab2 MS |
1744 | * Optional: targets are not required to implement this function. |
1745 | */ | |
1746 | ||
1747 | static char * | |
1748 | remote_threads_extra_info (struct thread_info *tp) | |
1749 | { | |
d01949b6 | 1750 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
1751 | int result; |
1752 | int set; | |
1753 | threadref id; | |
1754 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 1755 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
1756 | int n = 0; /* position in display_buf */ |
1757 | ||
1758 | if (remote_desc == 0) /* paranoia */ | |
8e65ff28 | 1759 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 1760 | _("remote_threads_extra_info")); |
9d1f7ab2 MS |
1761 | |
1762 | if (use_threadextra_query) | |
1763 | { | |
6d820c5c DJ |
1764 | char *bufp = rs->buf; |
1765 | ||
ea9c271d | 1766 | xsnprintf (bufp, get_remote_packet_size (), "qThreadExtraInfo,%x", |
ecbc58df | 1767 | PIDGET (tp->ptid)); |
9d1f7ab2 | 1768 | putpkt (bufp); |
6d820c5c | 1769 | getpkt (&rs->buf, &rs->buf_size, 0); |
9d1f7ab2 MS |
1770 | if (bufp[0] != 0) |
1771 | { | |
30559e10 | 1772 | n = min (strlen (bufp) / 2, sizeof (display_buf)); |
cfd77fa1 | 1773 | result = hex2bin (bufp, (gdb_byte *) display_buf, n); |
30559e10 | 1774 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
1775 | return display_buf; |
1776 | } | |
0f71a2f6 | 1777 | } |
9d1f7ab2 MS |
1778 | |
1779 | /* If the above query fails, fall back to the old method. */ | |
1780 | use_threadextra_query = 0; | |
1781 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
1782 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
39f77062 | 1783 | int_to_threadref (&id, PIDGET (tp->ptid)); |
9d1f7ab2 MS |
1784 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
1785 | if (threadinfo.active) | |
0f71a2f6 | 1786 | { |
9d1f7ab2 | 1787 | if (*threadinfo.shortname) |
ecbc58df WZ |
1788 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
1789 | " Name: %s,", threadinfo.shortname); | |
9d1f7ab2 | 1790 | if (*threadinfo.display) |
ecbc58df WZ |
1791 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
1792 | " State: %s,", threadinfo.display); | |
9d1f7ab2 | 1793 | if (*threadinfo.more_display) |
ecbc58df WZ |
1794 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
1795 | " Priority: %s", threadinfo.more_display); | |
9d1f7ab2 MS |
1796 | |
1797 | if (n > 0) | |
c5aa993b | 1798 | { |
23860348 | 1799 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
1800 | if (',' == display_buf[n-1]) |
1801 | display_buf[n-1] = ' '; | |
1802 | return display_buf; | |
c5aa993b | 1803 | } |
0f71a2f6 | 1804 | } |
9d1f7ab2 | 1805 | return NULL; |
0f71a2f6 | 1806 | } |
c906108c | 1807 | \f |
c5aa993b | 1808 | |
24b06219 | 1809 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
1810 | |
1811 | static void | |
fba45db2 | 1812 | extended_remote_restart (void) |
c906108c | 1813 | { |
d01949b6 | 1814 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1815 | |
1816 | /* Send the restart command; for reasons I don't understand the | |
1817 | remote side really expects a number after the "R". */ | |
ea9c271d | 1818 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); |
6d820c5c | 1819 | putpkt (rs->buf); |
c906108c | 1820 | |
ad9a8f3f NS |
1821 | remote_fileio_reset (); |
1822 | ||
c906108c SS |
1823 | /* Now query for status so this looks just like we restarted |
1824 | gdbserver from scratch. */ | |
1825 | putpkt ("?"); | |
01d3a6ce | 1826 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c SS |
1827 | } |
1828 | \f | |
1829 | /* Clean up connection to a remote debugger. */ | |
1830 | ||
c906108c | 1831 | static void |
fba45db2 | 1832 | remote_close (int quitting) |
c906108c SS |
1833 | { |
1834 | if (remote_desc) | |
2cd58942 | 1835 | serial_close (remote_desc); |
c906108c SS |
1836 | remote_desc = NULL; |
1837 | } | |
1838 | ||
23860348 | 1839 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
1840 | |
1841 | static void | |
fba45db2 | 1842 | get_offsets (void) |
c906108c | 1843 | { |
d01949b6 | 1844 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 1845 | char *buf = rs->buf; |
085dd6e6 | 1846 | char *ptr; |
c906108c SS |
1847 | int lose; |
1848 | CORE_ADDR text_addr, data_addr, bss_addr; | |
1849 | struct section_offsets *offs; | |
1850 | ||
1851 | putpkt ("qOffsets"); | |
6d820c5c | 1852 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c SS |
1853 | |
1854 | if (buf[0] == '\000') | |
1855 | return; /* Return silently. Stub doesn't support | |
23860348 | 1856 | this command. */ |
c906108c SS |
1857 | if (buf[0] == 'E') |
1858 | { | |
8a3fe4f8 | 1859 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
1860 | return; |
1861 | } | |
1862 | ||
1863 | /* Pick up each field in turn. This used to be done with scanf, but | |
1864 | scanf will make trouble if CORE_ADDR size doesn't match | |
1865 | conversion directives correctly. The following code will work | |
1866 | with any size of CORE_ADDR. */ | |
1867 | text_addr = data_addr = bss_addr = 0; | |
1868 | ptr = buf; | |
1869 | lose = 0; | |
1870 | ||
1871 | if (strncmp (ptr, "Text=", 5) == 0) | |
1872 | { | |
1873 | ptr += 5; | |
1874 | /* Don't use strtol, could lose on big values. */ | |
1875 | while (*ptr && *ptr != ';') | |
1876 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
1877 | } | |
1878 | else | |
1879 | lose = 1; | |
1880 | ||
1881 | if (!lose && strncmp (ptr, ";Data=", 6) == 0) | |
1882 | { | |
1883 | ptr += 6; | |
1884 | while (*ptr && *ptr != ';') | |
1885 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
1886 | } | |
1887 | else | |
1888 | lose = 1; | |
1889 | ||
1890 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
1891 | { | |
1892 | ptr += 5; | |
1893 | while (*ptr && *ptr != ';') | |
1894 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
1895 | } | |
1896 | else | |
1897 | lose = 1; | |
1898 | ||
1899 | if (lose) | |
8a3fe4f8 | 1900 | error (_("Malformed response to offset query, %s"), buf); |
c906108c SS |
1901 | |
1902 | if (symfile_objfile == NULL) | |
1903 | return; | |
1904 | ||
802188a7 | 1905 | offs = ((struct section_offsets *) |
a39a16c4 | 1906 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 1907 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 1908 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 1909 | |
a4c8257b | 1910 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; |
c906108c SS |
1911 | |
1912 | /* This is a temporary kludge to force data and bss to use the same offsets | |
1913 | because that's what nlmconv does now. The real solution requires changes | |
1914 | to the stub and remote.c that I don't have time to do right now. */ | |
1915 | ||
a4c8257b EZ |
1916 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; |
1917 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
c906108c SS |
1918 | |
1919 | objfile_relocate (symfile_objfile, offs); | |
1920 | } | |
1921 | ||
1922 | /* Stub for catch_errors. */ | |
1923 | ||
0f71a2f6 | 1924 | static int |
36918e70 | 1925 | remote_start_remote_dummy (struct ui_out *uiout, void *dummy) |
0f71a2f6 | 1926 | { |
23860348 | 1927 | start_remote (); /* Initialize gdb process mechanisms. */ |
36918e70 AC |
1928 | /* NOTE: Return something >=0. A -ve value is reserved for |
1929 | catch_exceptions. */ | |
0f71a2f6 JM |
1930 | return 1; |
1931 | } | |
1932 | ||
9cbc821d | 1933 | static void |
36918e70 | 1934 | remote_start_remote (struct ui_out *uiout, void *dummy) |
c906108c | 1935 | { |
23860348 | 1936 | immediate_quit++; /* Allow user to interrupt it. */ |
c906108c SS |
1937 | |
1938 | /* Ack any packet which the remote side has already sent. */ | |
2cd58942 | 1939 | serial_write (remote_desc, "+", 1); |
c906108c SS |
1940 | |
1941 | /* Let the stub know that we want it to return the thread. */ | |
1942 | set_thread (-1, 0); | |
1943 | ||
39f77062 | 1944 | inferior_ptid = remote_current_thread (inferior_ptid); |
c906108c | 1945 | |
23860348 | 1946 | get_offsets (); /* Get text, data & bss offsets. */ |
c906108c | 1947 | |
23860348 | 1948 | putpkt ("?"); /* Initiate a query from remote machine. */ |
8edbea78 | 1949 | immediate_quit--; |
c906108c | 1950 | |
9cbc821d | 1951 | remote_start_remote_dummy (uiout, dummy); |
c906108c SS |
1952 | } |
1953 | ||
1954 | /* Open a connection to a remote debugger. | |
1955 | NAME is the filename used for communication. */ | |
1956 | ||
1957 | static void | |
fba45db2 | 1958 | remote_open (char *name, int from_tty) |
c906108c | 1959 | { |
92d1e331 | 1960 | remote_open_1 (name, from_tty, &remote_ops, 0, 0); |
c906108c SS |
1961 | } |
1962 | ||
23860348 | 1963 | /* Just like remote_open, but with asynchronous support. */ |
43ff13b4 | 1964 | static void |
fba45db2 | 1965 | remote_async_open (char *name, int from_tty) |
43ff13b4 | 1966 | { |
92d1e331 | 1967 | remote_open_1 (name, from_tty, &remote_async_ops, 0, 1); |
43ff13b4 JM |
1968 | } |
1969 | ||
c906108c SS |
1970 | /* Open a connection to a remote debugger using the extended |
1971 | remote gdb protocol. NAME is the filename used for communication. */ | |
1972 | ||
1973 | static void | |
fba45db2 | 1974 | extended_remote_open (char *name, int from_tty) |
c906108c | 1975 | { |
92d1e331 DJ |
1976 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */, |
1977 | 0 /* async_p */); | |
c906108c SS |
1978 | } |
1979 | ||
23860348 | 1980 | /* Just like extended_remote_open, but with asynchronous support. */ |
43ff13b4 | 1981 | static void |
fba45db2 | 1982 | extended_remote_async_open (char *name, int from_tty) |
43ff13b4 | 1983 | { |
92d1e331 DJ |
1984 | remote_open_1 (name, from_tty, &extended_async_remote_ops, |
1985 | 1 /*extended_p */, 1 /* async_p */); | |
43ff13b4 JM |
1986 | } |
1987 | ||
c906108c SS |
1988 | /* Generic code for opening a connection to a remote target. */ |
1989 | ||
d471ea57 AC |
1990 | static void |
1991 | init_all_packet_configs (void) | |
1992 | { | |
1993 | int i; | |
444abaca DJ |
1994 | for (i = 0; i < PACKET_MAX; i++) |
1995 | update_packet_config (&remote_protocol_packets[i]); | |
d471ea57 AC |
1996 | } |
1997 | ||
23860348 | 1998 | /* Symbol look-up. */ |
dc8acb97 MS |
1999 | |
2000 | static void | |
2001 | remote_check_symbols (struct objfile *objfile) | |
2002 | { | |
d01949b6 | 2003 | struct remote_state *rs = get_remote_state (); |
dc8acb97 MS |
2004 | char *msg, *reply, *tmp; |
2005 | struct minimal_symbol *sym; | |
2006 | int end; | |
2007 | ||
444abaca | 2008 | if (remote_protocol_packets[PACKET_qSymbol].support == PACKET_DISABLE) |
dc8acb97 MS |
2009 | return; |
2010 | ||
6d820c5c DJ |
2011 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
2012 | because we need both at the same time. */ | |
ea9c271d | 2013 | msg = alloca (get_remote_packet_size ()); |
6d820c5c DJ |
2014 | |
2015 | reply = rs->buf; | |
dc8acb97 | 2016 | |
23860348 | 2017 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
2018 | |
2019 | putpkt ("qSymbol::"); | |
6d820c5c DJ |
2020 | getpkt (&rs->buf, &rs->buf_size, 0); |
2021 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSymbol]); | |
dc8acb97 MS |
2022 | |
2023 | while (strncmp (reply, "qSymbol:", 8) == 0) | |
2024 | { | |
2025 | tmp = &reply[8]; | |
cfd77fa1 | 2026 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
2027 | msg[end] = '\0'; |
2028 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
2029 | if (sym == NULL) | |
ea9c271d | 2030 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
dc8acb97 | 2031 | else |
ea9c271d | 2032 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", |
ecbc58df WZ |
2033 | paddr_nz (SYMBOL_VALUE_ADDRESS (sym)), |
2034 | &reply[8]); | |
dc8acb97 | 2035 | putpkt (msg); |
6d820c5c | 2036 | getpkt (&rs->buf, &rs->buf_size, 0); |
dc8acb97 MS |
2037 | } |
2038 | } | |
2039 | ||
9db8d71f DJ |
2040 | static struct serial * |
2041 | remote_serial_open (char *name) | |
2042 | { | |
2043 | static int udp_warning = 0; | |
2044 | ||
2045 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
2046 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
2047 | serial connection is reliable and not the serial connection promising | |
2048 | to be. */ | |
2049 | if (!udp_warning && strncmp (name, "udp:", 4) == 0) | |
2050 | { | |
8a3fe4f8 AC |
2051 | warning (_("\ |
2052 | The remote protocol may be unreliable over UDP.\n\ | |
2053 | Some events may be lost, rendering further debugging impossible.")); | |
9db8d71f DJ |
2054 | udp_warning = 1; |
2055 | } | |
2056 | ||
2057 | return serial_open (name); | |
2058 | } | |
2059 | ||
c906108c | 2060 | static void |
fba45db2 | 2061 | remote_open_1 (char *name, int from_tty, struct target_ops *target, |
92d1e331 | 2062 | int extended_p, int async_p) |
c906108c | 2063 | { |
d01949b6 | 2064 | struct remote_state *rs = get_remote_state (); |
c906108c | 2065 | if (name == 0) |
8a3fe4f8 | 2066 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 2067 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 2068 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 2069 | |
23860348 | 2070 | /* See FIXME above. */ |
92d1e331 DJ |
2071 | if (!async_p) |
2072 | wait_forever_enabled_p = 1; | |
6426a772 | 2073 | |
c906108c SS |
2074 | target_preopen (from_tty); |
2075 | ||
2076 | unpush_target (target); | |
2077 | ||
ad9a8f3f | 2078 | remote_fileio_reset (); |
1dd41f16 NS |
2079 | reopen_exec_file (); |
2080 | reread_symbols (); | |
2081 | ||
9db8d71f | 2082 | remote_desc = remote_serial_open (name); |
c906108c SS |
2083 | if (!remote_desc) |
2084 | perror_with_name (name); | |
2085 | ||
2086 | if (baud_rate != -1) | |
2087 | { | |
2cd58942 | 2088 | if (serial_setbaudrate (remote_desc, baud_rate)) |
c906108c | 2089 | { |
9b74d5d3 KB |
2090 | /* The requested speed could not be set. Error out to |
2091 | top level after closing remote_desc. Take care to | |
2092 | set remote_desc to NULL to avoid closing remote_desc | |
2093 | more than once. */ | |
2cd58942 | 2094 | serial_close (remote_desc); |
9b74d5d3 | 2095 | remote_desc = NULL; |
c906108c SS |
2096 | perror_with_name (name); |
2097 | } | |
2098 | } | |
2099 | ||
2cd58942 | 2100 | serial_raw (remote_desc); |
c906108c SS |
2101 | |
2102 | /* If there is something sitting in the buffer we might take it as a | |
2103 | response to a command, which would be bad. */ | |
2cd58942 | 2104 | serial_flush_input (remote_desc); |
c906108c SS |
2105 | |
2106 | if (from_tty) | |
2107 | { | |
2108 | puts_filtered ("Remote debugging using "); | |
2109 | puts_filtered (name); | |
2110 | puts_filtered ("\n"); | |
2111 | } | |
23860348 | 2112 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 2113 | |
d471ea57 | 2114 | init_all_packet_configs (); |
802188a7 | 2115 | |
c5aa993b | 2116 | general_thread = -2; |
cce74817 | 2117 | continue_thread = -2; |
c906108c | 2118 | |
9d1f7ab2 MS |
2119 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
2120 | use_threadinfo_query = 1; | |
2121 | use_threadextra_query = 1; | |
2122 | ||
c906108c SS |
2123 | /* Without this, some commands which require an active target (such |
2124 | as kill) won't work. This variable serves (at least) double duty | |
2125 | as both the pid of the target process (if it has such), and as a | |
2126 | flag indicating that a target is active. These functions should | |
2127 | be split out into seperate variables, especially since GDB will | |
2128 | someday have a notion of debugging several processes. */ | |
2129 | ||
39f77062 | 2130 | inferior_ptid = pid_to_ptid (MAGIC_NULL_PID); |
92d1e331 DJ |
2131 | |
2132 | if (async_p) | |
2133 | { | |
23860348 | 2134 | /* With this target we start out by owning the terminal. */ |
92d1e331 DJ |
2135 | remote_async_terminal_ours_p = 1; |
2136 | ||
2137 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
2138 | assumed that the target is already ready and able to respond to | |
2139 | requests. Unfortunately remote_start_remote() eventually calls | |
2140 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets | |
2141 | around this. Eventually a mechanism that allows | |
2142 | wait_for_inferior() to expect/get timeouts will be | |
23860348 | 2143 | implemented. */ |
92d1e331 DJ |
2144 | wait_forever_enabled_p = 0; |
2145 | } | |
2146 | ||
23860348 | 2147 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 2148 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 2149 | |
36918e70 | 2150 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
2151 | target (we'd otherwise be in an inconsistent state) and then |
2152 | propogate the error on up the exception chain. This ensures that | |
2153 | the caller doesn't stumble along blindly assuming that the | |
2154 | function succeeded. The CLI doesn't have this problem but other | |
2155 | UI's, such as MI do. | |
36918e70 AC |
2156 | |
2157 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
2158 | this function should return an error indication letting the | |
ce2826aa | 2159 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
2160 | ``target remote'' is directly wired to this function making that |
2161 | impossible. On a positive note, the CLI side of this problem has | |
2162 | been fixed - the function set_cmd_context() makes it possible for | |
2163 | all the ``target ....'' commands to share a common callback | |
2164 | function. See cli-dump.c. */ | |
109c3e39 AC |
2165 | { |
2166 | struct gdb_exception ex | |
2167 | = catch_exception (uiout, remote_start_remote, NULL, RETURN_MASK_ALL); | |
2168 | if (ex.reason < 0) | |
2169 | { | |
2170 | pop_target (); | |
2171 | if (async_p) | |
2172 | wait_forever_enabled_p = 1; | |
2173 | throw_exception (ex); | |
2174 | } | |
2175 | } | |
c906108c | 2176 | |
92d1e331 DJ |
2177 | if (async_p) |
2178 | wait_forever_enabled_p = 1; | |
6426a772 JM |
2179 | |
2180 | if (extended_p) | |
43ff13b4 | 2181 | { |
6240bebf | 2182 | /* Tell the remote that we are using the extended protocol. */ |
6426a772 | 2183 | putpkt ("!"); |
6d820c5c | 2184 | getpkt (&rs->buf, &rs->buf_size, 0); |
43ff13b4 | 2185 | } |
a77053c2 | 2186 | |
9353355f | 2187 | post_create_inferior (¤t_target, from_tty); |
f78f6cf1 | 2188 | |
23860348 | 2189 | if (exec_bfd) /* No use without an exec file. */ |
9353355f | 2190 | remote_check_symbols (symfile_objfile); |
43ff13b4 JM |
2191 | } |
2192 | ||
c906108c SS |
2193 | /* This takes a program previously attached to and detaches it. After |
2194 | this is done, GDB can be used to debug some other program. We | |
2195 | better not have left any breakpoints in the target program or it'll | |
2196 | die when it hits one. */ | |
2197 | ||
2198 | static void | |
fba45db2 | 2199 | remote_detach (char *args, int from_tty) |
c906108c | 2200 | { |
d01949b6 | 2201 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2202 | |
2203 | if (args) | |
8a3fe4f8 | 2204 | error (_("Argument given to \"detach\" when remotely debugging.")); |
c906108c SS |
2205 | |
2206 | /* Tell the remote target to detach. */ | |
6d820c5c DJ |
2207 | strcpy (rs->buf, "D"); |
2208 | remote_send (&rs->buf, &rs->buf_size); | |
c906108c | 2209 | |
23860348 | 2210 | /* Unregister the file descriptor from the event loop. */ |
6ad8ae5c DJ |
2211 | if (target_is_async_p ()) |
2212 | serial_async (remote_desc, NULL, 0); | |
2213 | ||
cca728d0 | 2214 | target_mourn_inferior (); |
c906108c SS |
2215 | if (from_tty) |
2216 | puts_filtered ("Ending remote debugging.\n"); | |
2217 | } | |
2218 | ||
6ad8ae5c DJ |
2219 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
2220 | ||
43ff13b4 | 2221 | static void |
597320e7 | 2222 | remote_disconnect (struct target_ops *target, char *args, int from_tty) |
43ff13b4 | 2223 | { |
43ff13b4 | 2224 | if (args) |
8a3fe4f8 | 2225 | error (_("Argument given to \"detach\" when remotely debugging.")); |
43ff13b4 | 2226 | |
23860348 | 2227 | /* Unregister the file descriptor from the event loop. */ |
ed9a39eb | 2228 | if (target_is_async_p ()) |
2cd58942 | 2229 | serial_async (remote_desc, NULL, 0); |
43ff13b4 | 2230 | |
cca728d0 | 2231 | target_mourn_inferior (); |
43ff13b4 JM |
2232 | if (from_tty) |
2233 | puts_filtered ("Ending remote debugging.\n"); | |
2234 | } | |
2235 | ||
c906108c SS |
2236 | /* Convert hex digit A to a number. */ |
2237 | ||
30559e10 | 2238 | static int |
fba45db2 | 2239 | fromhex (int a) |
c906108c SS |
2240 | { |
2241 | if (a >= '0' && a <= '9') | |
2242 | return a - '0'; | |
2243 | else if (a >= 'a' && a <= 'f') | |
2244 | return a - 'a' + 10; | |
2245 | else if (a >= 'A' && a <= 'F') | |
2246 | return a - 'A' + 10; | |
c5aa993b | 2247 | else |
8a3fe4f8 | 2248 | error (_("Reply contains invalid hex digit %d"), a); |
c906108c SS |
2249 | } |
2250 | ||
30559e10 | 2251 | static int |
cfd77fa1 | 2252 | hex2bin (const char *hex, gdb_byte *bin, int count) |
30559e10 MS |
2253 | { |
2254 | int i; | |
2255 | ||
30559e10 MS |
2256 | for (i = 0; i < count; i++) |
2257 | { | |
2258 | if (hex[0] == 0 || hex[1] == 0) | |
2259 | { | |
2260 | /* Hex string is short, or of uneven length. | |
23860348 | 2261 | Return the count that has been converted so far. */ |
30559e10 MS |
2262 | return i; |
2263 | } | |
2264 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); | |
2265 | hex += 2; | |
2266 | } | |
2267 | return i; | |
2268 | } | |
2269 | ||
c906108c SS |
2270 | /* Convert number NIB to a hex digit. */ |
2271 | ||
2272 | static int | |
fba45db2 | 2273 | tohex (int nib) |
c906108c SS |
2274 | { |
2275 | if (nib < 10) | |
c5aa993b | 2276 | return '0' + nib; |
c906108c | 2277 | else |
c5aa993b | 2278 | return 'a' + nib - 10; |
c906108c | 2279 | } |
30559e10 MS |
2280 | |
2281 | static int | |
cfd77fa1 | 2282 | bin2hex (const gdb_byte *bin, char *hex, int count) |
30559e10 MS |
2283 | { |
2284 | int i; | |
23860348 | 2285 | /* May use a length, or a nul-terminated string as input. */ |
30559e10 | 2286 | if (count == 0) |
cfd77fa1 | 2287 | count = strlen ((char *) bin); |
30559e10 MS |
2288 | |
2289 | for (i = 0; i < count; i++) | |
2290 | { | |
2291 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
2292 | *hex++ = tohex (*bin++ & 0xf); | |
2293 | } | |
2294 | *hex = 0; | |
2295 | return i; | |
2296 | } | |
c906108c | 2297 | \f |
506fb367 DJ |
2298 | /* Check for the availability of vCont. This function should also check |
2299 | the response. */ | |
c906108c SS |
2300 | |
2301 | static void | |
6d820c5c | 2302 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 2303 | { |
6d820c5c DJ |
2304 | char *buf = rs->buf; |
2305 | ||
506fb367 DJ |
2306 | strcpy (buf, "vCont?"); |
2307 | putpkt (buf); | |
6d820c5c | 2308 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 2309 | |
506fb367 DJ |
2310 | /* Make sure that the features we assume are supported. */ |
2311 | if (strncmp (buf, "vCont", 5) == 0) | |
2312 | { | |
2313 | char *p = &buf[5]; | |
2314 | int support_s, support_S, support_c, support_C; | |
2315 | ||
2316 | support_s = 0; | |
2317 | support_S = 0; | |
2318 | support_c = 0; | |
2319 | support_C = 0; | |
2320 | while (p && *p == ';') | |
2321 | { | |
2322 | p++; | |
2323 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2324 | support_s = 1; | |
2325 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2326 | support_S = 1; | |
2327 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2328 | support_c = 1; | |
2329 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2330 | support_C = 1; | |
2331 | ||
2332 | p = strchr (p, ';'); | |
2333 | } | |
c906108c | 2334 | |
506fb367 DJ |
2335 | /* If s, S, c, and C are not all supported, we can't use vCont. Clearing |
2336 | BUF will make packet_ok disable the packet. */ | |
2337 | if (!support_s || !support_S || !support_c || !support_C) | |
2338 | buf[0] = 0; | |
2339 | } | |
c906108c | 2340 | |
444abaca | 2341 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 2342 | } |
c906108c | 2343 | |
506fb367 DJ |
2344 | /* Resume the remote inferior by using a "vCont" packet. The thread |
2345 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
2346 | resumed thread should be single-stepped and/or signalled. If PTID's | |
2347 | PID is -1, then all threads are resumed; the thread to be stepped and/or | |
2348 | signalled is given in the global INFERIOR_PTID. This function returns | |
2349 | non-zero iff it resumes the inferior. | |
44eaed12 | 2350 | |
506fb367 DJ |
2351 | This function issues a strict subset of all possible vCont commands at the |
2352 | moment. */ | |
44eaed12 | 2353 | |
506fb367 DJ |
2354 | static int |
2355 | remote_vcont_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
2356 | { | |
2357 | struct remote_state *rs = get_remote_state (); | |
2358 | int pid = PIDGET (ptid); | |
2963ee1d | 2359 | char *buf = NULL, *outbuf; |
506fb367 | 2360 | struct cleanup *old_cleanup; |
44eaed12 | 2361 | |
444abaca | 2362 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 2363 | remote_vcont_probe (rs); |
44eaed12 | 2364 | |
444abaca | 2365 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_DISABLE) |
6d820c5c | 2366 | return 0; |
44eaed12 | 2367 | |
506fb367 DJ |
2368 | /* If we could generate a wider range of packets, we'd have to worry |
2369 | about overflowing BUF. Should there be a generic | |
2370 | "multi-part-packet" packet? */ | |
2371 | ||
2372 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) | |
c906108c | 2373 | { |
506fb367 DJ |
2374 | /* MAGIC_NULL_PTID means that we don't have any active threads, so we |
2375 | don't have any PID numbers the inferior will understand. Make sure | |
2376 | to only send forms that do not specify a PID. */ | |
2377 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d | 2378 | outbuf = xstrprintf ("vCont;S%02x", siggnal); |
506fb367 | 2379 | else if (step) |
2963ee1d | 2380 | outbuf = xstrprintf ("vCont;s"); |
506fb367 | 2381 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d | 2382 | outbuf = xstrprintf ("vCont;C%02x", siggnal); |
506fb367 | 2383 | else |
2963ee1d | 2384 | outbuf = xstrprintf ("vCont;c"); |
506fb367 DJ |
2385 | } |
2386 | else if (pid == -1) | |
2387 | { | |
2388 | /* Resume all threads, with preference for INFERIOR_PTID. */ | |
2389 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d DJ |
2390 | outbuf = xstrprintf ("vCont;S%02x:%x;c", siggnal, |
2391 | PIDGET (inferior_ptid)); | |
506fb367 | 2392 | else if (step) |
2963ee1d | 2393 | outbuf = xstrprintf ("vCont;s:%x;c", PIDGET (inferior_ptid)); |
506fb367 | 2394 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d DJ |
2395 | outbuf = xstrprintf ("vCont;C%02x:%x;c", siggnal, |
2396 | PIDGET (inferior_ptid)); | |
506fb367 | 2397 | else |
2963ee1d | 2398 | outbuf = xstrprintf ("vCont;c"); |
c906108c SS |
2399 | } |
2400 | else | |
506fb367 DJ |
2401 | { |
2402 | /* Scheduler locking; resume only PTID. */ | |
2403 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d | 2404 | outbuf = xstrprintf ("vCont;S%02x:%x", siggnal, pid); |
506fb367 | 2405 | else if (step) |
2963ee1d | 2406 | outbuf = xstrprintf ("vCont;s:%x", pid); |
506fb367 | 2407 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d | 2408 | outbuf = xstrprintf ("vCont;C%02x:%x", siggnal, pid); |
506fb367 | 2409 | else |
2963ee1d | 2410 | outbuf = xstrprintf ("vCont;c:%x", pid); |
506fb367 | 2411 | } |
c906108c | 2412 | |
ea9c271d | 2413 | gdb_assert (outbuf && strlen (outbuf) < get_remote_packet_size ()); |
6d820c5c | 2414 | old_cleanup = make_cleanup (xfree, outbuf); |
2963ee1d DJ |
2415 | |
2416 | putpkt (outbuf); | |
506fb367 DJ |
2417 | |
2418 | do_cleanups (old_cleanup); | |
2419 | ||
2420 | return 1; | |
c906108c | 2421 | } |
43ff13b4 | 2422 | |
506fb367 DJ |
2423 | /* Tell the remote machine to resume. */ |
2424 | ||
2425 | static enum target_signal last_sent_signal = TARGET_SIGNAL_0; | |
2426 | ||
2427 | static int last_sent_step; | |
2428 | ||
43ff13b4 | 2429 | static void |
506fb367 | 2430 | remote_resume (ptid_t ptid, int step, enum target_signal siggnal) |
43ff13b4 | 2431 | { |
d01949b6 | 2432 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 2433 | char *buf = rs->buf; |
39f77062 | 2434 | int pid = PIDGET (ptid); |
43ff13b4 | 2435 | |
43ff13b4 JM |
2436 | last_sent_signal = siggnal; |
2437 | last_sent_step = step; | |
2438 | ||
2439 | /* A hook for when we need to do something at the last moment before | |
2440 | resumption. */ | |
9a4105ab AC |
2441 | if (deprecated_target_resume_hook) |
2442 | (*deprecated_target_resume_hook) (); | |
43ff13b4 | 2443 | |
506fb367 DJ |
2444 | /* The vCont packet doesn't need to specify threads via Hc. */ |
2445 | if (remote_vcont_resume (ptid, step, siggnal)) | |
2446 | return; | |
2447 | ||
2448 | /* All other supported resume packets do use Hc, so call set_thread. */ | |
2449 | if (pid == -1) | |
23860348 | 2450 | set_thread (0, 0); /* Run any thread. */ |
506fb367 | 2451 | else |
23860348 | 2452 | set_thread (pid, 0); /* Run this thread. */ |
506fb367 | 2453 | |
43ff13b4 JM |
2454 | if (siggnal != TARGET_SIGNAL_0) |
2455 | { | |
2456 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 2457 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 2458 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
2459 | buf[3] = '\0'; |
2460 | } | |
2461 | else | |
c5aa993b | 2462 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 2463 | |
44eaed12 | 2464 | putpkt (buf); |
506fb367 DJ |
2465 | } |
2466 | ||
23860348 | 2467 | /* Same as remote_resume, but with async support. */ |
506fb367 DJ |
2468 | static void |
2469 | remote_async_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
2470 | { | |
2471 | remote_resume (ptid, step, siggnal); | |
43ff13b4 | 2472 | |
2acceee2 JM |
2473 | /* We are about to start executing the inferior, let's register it |
2474 | with the event loop. NOTE: this is the one place where all the | |
2475 | execution commands end up. We could alternatively do this in each | |
23860348 | 2476 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
2477 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
2478 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 2479 | NOT asynchronously. */ |
362646f5 | 2480 | if (target_can_async_p ()) |
2acceee2 | 2481 | target_async (inferior_event_handler, 0); |
23860348 | 2482 | /* Tell the world that the target is now executing. */ |
2acceee2 JM |
2483 | /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set |
2484 | this? Instead, should the client of target just assume (for | |
2485 | async targets) that the target is going to start executing? Is | |
2486 | this information already found in the continuation block? */ | |
ed9a39eb | 2487 | if (target_is_async_p ()) |
2acceee2 | 2488 | target_executing = 1; |
43ff13b4 | 2489 | } |
c906108c | 2490 | \f |
43ff13b4 JM |
2491 | |
2492 | /* Set up the signal handler for SIGINT, while the target is | |
23860348 | 2493 | executing, ovewriting the 'regular' SIGINT signal handler. */ |
43ff13b4 | 2494 | static void |
fba45db2 | 2495 | initialize_sigint_signal_handler (void) |
43ff13b4 | 2496 | { |
c5aa993b | 2497 | sigint_remote_token = |
43ff13b4 JM |
2498 | create_async_signal_handler (async_remote_interrupt, NULL); |
2499 | signal (SIGINT, handle_remote_sigint); | |
2500 | } | |
2501 | ||
23860348 | 2502 | /* Signal handler for SIGINT, while the target is executing. */ |
43ff13b4 | 2503 | static void |
fba45db2 | 2504 | handle_remote_sigint (int sig) |
43ff13b4 JM |
2505 | { |
2506 | signal (sig, handle_remote_sigint_twice); | |
c5aa993b | 2507 | sigint_remote_twice_token = |
43ff13b4 JM |
2508 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
2509 | mark_async_signal_handler_wrapper (sigint_remote_token); | |
2510 | } | |
2511 | ||
2512 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
2513 | sent once. It will take effect the second time that the user sends | |
23860348 | 2514 | a ^C. */ |
43ff13b4 | 2515 | static void |
fba45db2 | 2516 | handle_remote_sigint_twice (int sig) |
43ff13b4 JM |
2517 | { |
2518 | signal (sig, handle_sigint); | |
c5aa993b | 2519 | sigint_remote_twice_token = |
2df3850c | 2520 | create_async_signal_handler (inferior_event_handler_wrapper, NULL); |
43ff13b4 JM |
2521 | mark_async_signal_handler_wrapper (sigint_remote_twice_token); |
2522 | } | |
2523 | ||
6426a772 | 2524 | /* Perform the real interruption of the target execution, in response |
23860348 | 2525 | to a ^C. */ |
c5aa993b | 2526 | static void |
fba45db2 | 2527 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
2528 | { |
2529 | if (remote_debug) | |
2530 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
2531 | ||
2532 | target_stop (); | |
2533 | } | |
2534 | ||
2535 | /* Perform interrupt, if the first attempt did not succeed. Just give | |
23860348 | 2536 | up on the target alltogether. */ |
2df3850c | 2537 | void |
fba45db2 | 2538 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 2539 | { |
2df3850c JM |
2540 | if (remote_debug) |
2541 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt_twice called\n"); | |
6426a772 | 2542 | /* Do something only if the target was not killed by the previous |
23860348 | 2543 | cntl-C. */ |
6426a772 JM |
2544 | if (target_executing) |
2545 | { | |
2546 | interrupt_query (); | |
2547 | signal (SIGINT, handle_remote_sigint); | |
2548 | } | |
43ff13b4 JM |
2549 | } |
2550 | ||
2551 | /* Reinstall the usual SIGINT handlers, after the target has | |
23860348 | 2552 | stopped. */ |
6426a772 JM |
2553 | static void |
2554 | cleanup_sigint_signal_handler (void *dummy) | |
43ff13b4 JM |
2555 | { |
2556 | signal (SIGINT, handle_sigint); | |
2557 | if (sigint_remote_twice_token) | |
23860348 MS |
2558 | delete_async_signal_handler ((struct async_signal_handler **) |
2559 | &sigint_remote_twice_token); | |
43ff13b4 | 2560 | if (sigint_remote_token) |
23860348 MS |
2561 | delete_async_signal_handler ((struct async_signal_handler **) |
2562 | &sigint_remote_token); | |
43ff13b4 JM |
2563 | } |
2564 | ||
c906108c SS |
2565 | /* Send ^C to target to halt it. Target will respond, and send us a |
2566 | packet. */ | |
507f3c78 | 2567 | static void (*ofunc) (int); |
c906108c | 2568 | |
7a292a7a SS |
2569 | /* The command line interface's stop routine. This function is installed |
2570 | as a signal handler for SIGINT. The first time a user requests a | |
2571 | stop, we call remote_stop to send a break or ^C. If there is no | |
2572 | response from the target (it didn't stop when the user requested it), | |
23860348 | 2573 | we ask the user if he'd like to detach from the target. */ |
c906108c | 2574 | static void |
fba45db2 | 2575 | remote_interrupt (int signo) |
c906108c | 2576 | { |
23860348 | 2577 | /* If this doesn't work, try more severe steps. */ |
7a292a7a SS |
2578 | signal (signo, remote_interrupt_twice); |
2579 | ||
2580 | if (remote_debug) | |
0f71a2f6 | 2581 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); |
7a292a7a SS |
2582 | |
2583 | target_stop (); | |
2584 | } | |
2585 | ||
2586 | /* The user typed ^C twice. */ | |
2587 | ||
2588 | static void | |
fba45db2 | 2589 | remote_interrupt_twice (int signo) |
7a292a7a SS |
2590 | { |
2591 | signal (signo, ofunc); | |
2592 | interrupt_query (); | |
c906108c SS |
2593 | signal (signo, remote_interrupt); |
2594 | } | |
7a292a7a SS |
2595 | |
2596 | /* This is the generic stop called via the target vector. When a target | |
2597 | interrupt is requested, either by the command line or the GUI, we | |
23860348 | 2598 | will eventually end up here. */ |
c906108c | 2599 | static void |
fba45db2 | 2600 | remote_stop (void) |
c906108c | 2601 | { |
7a292a7a SS |
2602 | /* Send a break or a ^C, depending on user preference. */ |
2603 | if (remote_debug) | |
0f71a2f6 | 2604 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 2605 | |
7a292a7a | 2606 | if (remote_break) |
2cd58942 | 2607 | serial_send_break (remote_desc); |
c906108c | 2608 | else |
2cd58942 | 2609 | serial_write (remote_desc, "\003", 1); |
c906108c SS |
2610 | } |
2611 | ||
2612 | /* Ask the user what to do when an interrupt is received. */ | |
2613 | ||
2614 | static void | |
fba45db2 | 2615 | interrupt_query (void) |
c906108c SS |
2616 | { |
2617 | target_terminal_ours (); | |
2618 | ||
2619 | if (query ("Interrupted while waiting for the program.\n\ | |
2620 | Give up (and stop debugging it)? ")) | |
2621 | { | |
2622 | target_mourn_inferior (); | |
315a522e | 2623 | deprecated_throw_reason (RETURN_QUIT); |
c906108c SS |
2624 | } |
2625 | ||
2626 | target_terminal_inferior (); | |
2627 | } | |
2628 | ||
6426a772 JM |
2629 | /* Enable/disable target terminal ownership. Most targets can use |
2630 | terminal groups to control terminal ownership. Remote targets are | |
2631 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 2632 | is required. */ |
6426a772 JM |
2633 | |
2634 | static void | |
2635 | remote_async_terminal_inferior (void) | |
2636 | { | |
2637 | /* FIXME: cagney/1999-09-27: Shouldn't need to test for | |
2638 | sync_execution here. This function should only be called when | |
2639 | GDB is resuming the inferior in the forground. A background | |
2640 | resume (``run&'') should leave GDB in control of the terminal and | |
23860348 | 2641 | consequently should not call this code. */ |
6426a772 JM |
2642 | if (!sync_execution) |
2643 | return; | |
2644 | /* FIXME: cagney/1999-09-27: Closely related to the above. Make | |
2645 | calls target_terminal_*() idenpotent. The event-loop GDB talking | |
2646 | to an asynchronous target with a synchronous command calls this | |
2647 | function from both event-top.c and infrun.c/infcmd.c. Once GDB | |
2648 | stops trying to transfer the terminal to the target when it | |
2649 | shouldn't this guard can go away. */ | |
2650 | if (!remote_async_terminal_ours_p) | |
2651 | return; | |
2652 | delete_file_handler (input_fd); | |
2653 | remote_async_terminal_ours_p = 0; | |
2654 | initialize_sigint_signal_handler (); | |
2655 | /* NOTE: At this point we could also register our selves as the | |
2656 | recipient of all input. Any characters typed could then be | |
23860348 | 2657 | passed on down to the target. */ |
6426a772 JM |
2658 | } |
2659 | ||
2660 | static void | |
2661 | remote_async_terminal_ours (void) | |
2662 | { | |
23860348 | 2663 | /* See FIXME in remote_async_terminal_inferior. */ |
6426a772 JM |
2664 | if (!sync_execution) |
2665 | return; | |
23860348 | 2666 | /* See FIXME in remote_async_terminal_inferior. */ |
6426a772 JM |
2667 | if (remote_async_terminal_ours_p) |
2668 | return; | |
2669 | cleanup_sigint_signal_handler (NULL); | |
2670 | add_file_handler (input_fd, stdin_event_handler, 0); | |
2671 | remote_async_terminal_ours_p = 1; | |
2672 | } | |
2673 | ||
c906108c SS |
2674 | /* If nonzero, ignore the next kill. */ |
2675 | ||
2676 | int kill_kludge; | |
2677 | ||
2678 | void | |
917317f4 | 2679 | remote_console_output (char *msg) |
c906108c SS |
2680 | { |
2681 | char *p; | |
2682 | ||
c5aa993b | 2683 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
2684 | { |
2685 | char tb[2]; | |
2686 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
2687 | tb[0] = c; | |
2688 | tb[1] = 0; | |
43ff13b4 | 2689 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 2690 | } |
917317f4 | 2691 | gdb_flush (gdb_stdtarg); |
c906108c SS |
2692 | } |
2693 | ||
0f71a2f6 JM |
2694 | /* Wait until the remote machine stops, then return, |
2695 | storing status in STATUS just as `wait' would. | |
802188a7 | 2696 | Returns "pid", which in the case of a multi-threaded |
0f71a2f6 | 2697 | remote OS, is the thread-id. */ |
c906108c | 2698 | |
39f77062 KB |
2699 | static ptid_t |
2700 | remote_wait (ptid_t ptid, struct target_waitstatus *status) | |
c906108c | 2701 | { |
d01949b6 | 2702 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 2703 | struct remote_arch_state *rsa = get_remote_arch_state (); |
6d820c5c | 2704 | char *buf = rs->buf; |
b2dd6311 | 2705 | ULONGEST thread_num = -1; |
3c3bea1c | 2706 | ULONGEST addr; |
c906108c SS |
2707 | |
2708 | status->kind = TARGET_WAITKIND_EXITED; | |
2709 | status->value.integer = 0; | |
2710 | ||
2711 | while (1) | |
2712 | { | |
cfd77fa1 | 2713 | char *p; |
c906108c | 2714 | |
c906108c | 2715 | ofunc = signal (SIGINT, remote_interrupt); |
6d820c5c | 2716 | getpkt (&rs->buf, &rs->buf_size, 1); |
c906108c SS |
2717 | signal (SIGINT, ofunc); |
2718 | ||
2719 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 2720 | collection of trace data) every time the target stops. */ |
9a4105ab AC |
2721 | if (deprecated_target_wait_loop_hook) |
2722 | (*deprecated_target_wait_loop_hook) (); | |
c906108c | 2723 | |
3c3bea1c GS |
2724 | remote_stopped_by_watchpoint_p = 0; |
2725 | ||
c906108c SS |
2726 | switch (buf[0]) |
2727 | { | |
23860348 | 2728 | case 'E': /* Error of some sort. */ |
8a3fe4f8 | 2729 | warning (_("Remote failure reply: %s"), buf); |
c906108c | 2730 | continue; |
23860348 | 2731 | case 'F': /* File-I/O request. */ |
449092f6 CV |
2732 | remote_fileio_request (buf); |
2733 | continue; | |
23860348 | 2734 | case 'T': /* Status with PC, SP, FP, ... */ |
c906108c | 2735 | { |
cfd77fa1 | 2736 | gdb_byte regs[MAX_REGISTER_SIZE]; |
c906108c | 2737 | |
23860348 | 2738 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
c906108c | 2739 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where |
c5aa993b JM |
2740 | ss = signal number |
2741 | n... = register number | |
2742 | r... = register contents | |
2743 | */ | |
c906108c SS |
2744 | p = &buf[3]; /* after Txx */ |
2745 | ||
2746 | while (*p) | |
2747 | { | |
cfd77fa1 | 2748 | char *p1; |
c906108c | 2749 | char *p_temp; |
97345198 | 2750 | int fieldsize; |
3c3bea1c GS |
2751 | LONGEST pnum = 0; |
2752 | ||
23860348 MS |
2753 | /* If the packet contains a register number save it in |
2754 | pnum and set p1 to point to the character following | |
2755 | it. Otherwise p1 points to p. */ | |
c906108c | 2756 | |
23860348 MS |
2757 | /* If this packet is an awatch packet, don't parse the |
2758 | 'a' as a register number. */ | |
3c3bea1c GS |
2759 | |
2760 | if (strncmp (p, "awatch", strlen("awatch")) != 0) | |
2761 | { | |
2762 | /* Read the ``P'' register number. */ | |
2763 | pnum = strtol (p, &p_temp, 16); | |
cfd77fa1 | 2764 | p1 = p_temp; |
3c3bea1c | 2765 | } |
802188a7 | 2766 | else |
3c3bea1c | 2767 | p1 = p; |
c906108c | 2768 | |
23860348 | 2769 | if (p1 == p) /* No register number present here. */ |
c906108c | 2770 | { |
cfd77fa1 | 2771 | p1 = strchr (p, ':'); |
c906108c | 2772 | if (p1 == NULL) |
670aa98f | 2773 | error (_("Malformed packet(a) (missing colon): %s\n\ |
8a3fe4f8 | 2774 | Packet: '%s'\n"), |
670aa98f | 2775 | p, buf); |
3c3bea1c | 2776 | if (strncmp (p, "thread", p1 - p) == 0) |
c906108c SS |
2777 | { |
2778 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
2779 | record_currthread (thread_num); | |
cfd77fa1 | 2780 | p = p_temp; |
c906108c | 2781 | } |
3c3bea1c GS |
2782 | else if ((strncmp (p, "watch", p1 - p) == 0) |
2783 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
2784 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
2785 | { | |
2786 | remote_stopped_by_watchpoint_p = 1; | |
2787 | p = unpack_varlen_hex (++p1, &addr); | |
2788 | remote_watch_data_address = (CORE_ADDR)addr; | |
2789 | } | |
2790 | else | |
2791 | { | |
2792 | /* Silently skip unknown optional info. */ | |
2793 | p_temp = strchr (p1 + 1, ';'); | |
2794 | if (p_temp) | |
cfd77fa1 | 2795 | p = p_temp; |
3c3bea1c | 2796 | } |
c906108c SS |
2797 | } |
2798 | else | |
2799 | { | |
ea9c271d | 2800 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); |
c906108c SS |
2801 | p = p1; |
2802 | ||
2803 | if (*p++ != ':') | |
8a3fe4f8 AC |
2804 | error (_("Malformed packet(b) (missing colon): %s\n\ |
2805 | Packet: '%s'\n"), | |
3fcb8548 | 2806 | p, buf); |
c906108c | 2807 | |
ad10f812 | 2808 | if (reg == NULL) |
8a3fe4f8 AC |
2809 | error (_("Remote sent bad register number %s: %s\n\ |
2810 | Packet: '%s'\n"), | |
3fcb8548 | 2811 | phex_nz (pnum, 0), p, buf); |
c906108c | 2812 | |
cfd77fa1 | 2813 | fieldsize = hex2bin (p, regs, |
23860348 MS |
2814 | register_size (current_gdbarch, |
2815 | reg->regnum)); | |
97345198 | 2816 | p += 2 * fieldsize; |
23860348 MS |
2817 | if (fieldsize < register_size (current_gdbarch, |
2818 | reg->regnum)) | |
8a3fe4f8 | 2819 | warning (_("Remote reply is too short: %s"), buf); |
23860348 MS |
2820 | regcache_raw_supply (current_regcache, |
2821 | reg->regnum, regs); | |
c906108c SS |
2822 | } |
2823 | ||
2824 | if (*p++ != ';') | |
8a3fe4f8 | 2825 | error (_("Remote register badly formatted: %s\nhere: %s"), |
23860348 | 2826 | buf, p); |
c906108c SS |
2827 | } |
2828 | } | |
2829 | /* fall through */ | |
23860348 | 2830 | case 'S': /* Old style status, just signal only. */ |
c906108c SS |
2831 | status->kind = TARGET_WAITKIND_STOPPED; |
2832 | status->value.sig = (enum target_signal) | |
2833 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2834 | ||
0f71a2f6 JM |
2835 | if (buf[3] == 'p') |
2836 | { | |
0f71a2f6 JM |
2837 | thread_num = strtol ((const char *) &buf[4], NULL, 16); |
2838 | record_currthread (thread_num); | |
2839 | } | |
c906108c | 2840 | goto got_status; |
23860348 | 2841 | case 'W': /* Target exited. */ |
c906108c SS |
2842 | { |
2843 | /* The remote process exited. */ | |
2844 | status->kind = TARGET_WAITKIND_EXITED; | |
2845 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
2846 | goto got_status; | |
2847 | } | |
2848 | case 'X': | |
2849 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
2850 | status->value.sig = (enum target_signal) | |
2851 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2852 | kill_kludge = 1; | |
2853 | ||
2854 | goto got_status; | |
23860348 | 2855 | case 'O': /* Console output. */ |
c906108c SS |
2856 | remote_console_output (buf + 1); |
2857 | continue; | |
2858 | case '\0': | |
2859 | if (last_sent_signal != TARGET_SIGNAL_0) | |
2860 | { | |
2861 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 2862 | the remote system doesn't support it. */ |
c906108c SS |
2863 | target_terminal_ours_for_output (); |
2864 | printf_filtered | |
2865 | ("Can't send signals to this remote system. %s not sent.\n", | |
2866 | target_signal_to_name (last_sent_signal)); | |
2867 | last_sent_signal = TARGET_SIGNAL_0; | |
2868 | target_terminal_inferior (); | |
2869 | ||
2870 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
2871 | putpkt ((char *) buf); | |
2872 | continue; | |
2873 | } | |
2874 | /* else fallthrough */ | |
2875 | default: | |
8a3fe4f8 | 2876 | warning (_("Invalid remote reply: %s"), buf); |
c906108c SS |
2877 | continue; |
2878 | } | |
2879 | } | |
c5aa993b | 2880 | got_status: |
c906108c SS |
2881 | if (thread_num != -1) |
2882 | { | |
39f77062 | 2883 | return pid_to_ptid (thread_num); |
c906108c | 2884 | } |
39f77062 | 2885 | return inferior_ptid; |
c906108c SS |
2886 | } |
2887 | ||
23860348 | 2888 | /* Async version of remote_wait. */ |
39f77062 KB |
2889 | static ptid_t |
2890 | remote_async_wait (ptid_t ptid, struct target_waitstatus *status) | |
43ff13b4 | 2891 | { |
d01949b6 | 2892 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 2893 | struct remote_arch_state *rsa = get_remote_arch_state (); |
6d820c5c | 2894 | char *buf = rs->buf; |
b2dd6311 | 2895 | ULONGEST thread_num = -1; |
3c3bea1c | 2896 | ULONGEST addr; |
43ff13b4 JM |
2897 | |
2898 | status->kind = TARGET_WAITKIND_EXITED; | |
2899 | status->value.integer = 0; | |
2900 | ||
3c3bea1c GS |
2901 | remote_stopped_by_watchpoint_p = 0; |
2902 | ||
43ff13b4 JM |
2903 | while (1) |
2904 | { | |
cfd77fa1 | 2905 | char *p; |
c5aa993b | 2906 | |
ed9a39eb | 2907 | if (!target_is_async_p ()) |
43ff13b4 | 2908 | ofunc = signal (SIGINT, remote_interrupt); |
6426a772 JM |
2909 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
2910 | _never_ wait for ever -> test on target_is_async_p(). | |
2911 | However, before we do that we need to ensure that the caller | |
23860348 | 2912 | knows how to take the target into/out of async mode. */ |
6d820c5c | 2913 | getpkt (&rs->buf, &rs->buf_size, wait_forever_enabled_p); |
ed9a39eb | 2914 | if (!target_is_async_p ()) |
43ff13b4 JM |
2915 | signal (SIGINT, ofunc); |
2916 | ||
2917 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 2918 | collection of trace data) every time the target stops. */ |
9a4105ab AC |
2919 | if (deprecated_target_wait_loop_hook) |
2920 | (*deprecated_target_wait_loop_hook) (); | |
43ff13b4 JM |
2921 | |
2922 | switch (buf[0]) | |
2923 | { | |
23860348 | 2924 | case 'E': /* Error of some sort. */ |
8a3fe4f8 | 2925 | warning (_("Remote failure reply: %s"), buf); |
43ff13b4 | 2926 | continue; |
23860348 | 2927 | case 'F': /* File-I/O request. */ |
449092f6 CV |
2928 | remote_fileio_request (buf); |
2929 | continue; | |
23860348 | 2930 | case 'T': /* Status with PC, SP, FP, ... */ |
43ff13b4 | 2931 | { |
cfd77fa1 | 2932 | gdb_byte regs[MAX_REGISTER_SIZE]; |
43ff13b4 | 2933 | |
23860348 | 2934 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
43ff13b4 | 2935 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where |
c5aa993b JM |
2936 | ss = signal number |
2937 | n... = register number | |
2938 | r... = register contents | |
2939 | */ | |
43ff13b4 JM |
2940 | p = &buf[3]; /* after Txx */ |
2941 | ||
2942 | while (*p) | |
2943 | { | |
cfd77fa1 | 2944 | char *p1; |
43ff13b4 | 2945 | char *p_temp; |
6c3f2dbf | 2946 | int fieldsize; |
3c3bea1c | 2947 | long pnum = 0; |
43ff13b4 | 2948 | |
23860348 MS |
2949 | /* If the packet contains a register number, save it |
2950 | in pnum and set p1 to point to the character | |
2951 | following it. Otherwise p1 points to p. */ | |
3c3bea1c GS |
2952 | |
2953 | /* If this packet is an awatch packet, don't parse the 'a' | |
2954 | as a register number. */ | |
802188a7 | 2955 | |
3c3bea1c GS |
2956 | if (!strncmp (p, "awatch", strlen ("awatch")) != 0) |
2957 | { | |
2958 | /* Read the register number. */ | |
2959 | pnum = strtol (p, &p_temp, 16); | |
cfd77fa1 | 2960 | p1 = p_temp; |
3c3bea1c | 2961 | } |
802188a7 | 2962 | else |
3c3bea1c | 2963 | p1 = p; |
43ff13b4 | 2964 | |
23860348 | 2965 | if (p1 == p) /* No register number present here. */ |
43ff13b4 | 2966 | { |
cfd77fa1 | 2967 | p1 = strchr (p, ':'); |
43ff13b4 | 2968 | if (p1 == NULL) |
8a3fe4f8 AC |
2969 | error (_("Malformed packet(a) (missing colon): %s\n\ |
2970 | Packet: '%s'\n"), | |
3fcb8548 | 2971 | p, buf); |
3c3bea1c | 2972 | if (strncmp (p, "thread", p1 - p) == 0) |
43ff13b4 JM |
2973 | { |
2974 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
2975 | record_currthread (thread_num); | |
cfd77fa1 | 2976 | p = p_temp; |
43ff13b4 | 2977 | } |
3c3bea1c GS |
2978 | else if ((strncmp (p, "watch", p1 - p) == 0) |
2979 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
2980 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
2981 | { | |
2982 | remote_stopped_by_watchpoint_p = 1; | |
2983 | p = unpack_varlen_hex (++p1, &addr); | |
2984 | remote_watch_data_address = (CORE_ADDR)addr; | |
2985 | } | |
2986 | else | |
2987 | { | |
2988 | /* Silently skip unknown optional info. */ | |
cfd77fa1 | 2989 | p_temp = strchr (p1 + 1, ';'); |
3c3bea1c GS |
2990 | if (p_temp) |
2991 | p = p_temp; | |
2992 | } | |
43ff13b4 | 2993 | } |
802188a7 | 2994 | |
43ff13b4 JM |
2995 | else |
2996 | { | |
ea9c271d | 2997 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); |
43ff13b4 | 2998 | p = p1; |
43ff13b4 | 2999 | if (*p++ != ':') |
8a3fe4f8 AC |
3000 | error (_("Malformed packet(b) (missing colon): %s\n\ |
3001 | Packet: '%s'\n"), | |
3fcb8548 | 3002 | p, buf); |
43ff13b4 | 3003 | |
ad10f812 | 3004 | if (reg == NULL) |
8a3fe4f8 AC |
3005 | error (_("Remote sent bad register number %ld: %s\n\ |
3006 | Packet: '%s'\n"), | |
3fcb8548 | 3007 | pnum, p, buf); |
43ff13b4 | 3008 | |
cfd77fa1 | 3009 | fieldsize = hex2bin (p, regs, |
23860348 MS |
3010 | register_size (current_gdbarch, |
3011 | reg->regnum)); | |
6c3f2dbf | 3012 | p += 2 * fieldsize; |
23860348 MS |
3013 | if (fieldsize < register_size (current_gdbarch, |
3014 | reg->regnum)) | |
8a3fe4f8 | 3015 | warning (_("Remote reply is too short: %s"), buf); |
23a6d369 | 3016 | regcache_raw_supply (current_regcache, reg->regnum, regs); |
43ff13b4 JM |
3017 | } |
3018 | ||
3019 | if (*p++ != ';') | |
8a3fe4f8 | 3020 | error (_("Remote register badly formatted: %s\nhere: %s"), |
0a2cfde4 | 3021 | buf, p); |
43ff13b4 JM |
3022 | } |
3023 | } | |
3024 | /* fall through */ | |
23860348 | 3025 | case 'S': /* Old style status, just signal only. */ |
43ff13b4 JM |
3026 | status->kind = TARGET_WAITKIND_STOPPED; |
3027 | status->value.sig = (enum target_signal) | |
3028 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3029 | ||
3030 | if (buf[3] == 'p') | |
3031 | { | |
43ff13b4 JM |
3032 | thread_num = strtol ((const char *) &buf[4], NULL, 16); |
3033 | record_currthread (thread_num); | |
3034 | } | |
43ff13b4 | 3035 | goto got_status; |
23860348 | 3036 | case 'W': /* Target exited. */ |
43ff13b4 JM |
3037 | { |
3038 | /* The remote process exited. */ | |
3039 | status->kind = TARGET_WAITKIND_EXITED; | |
3040 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
3041 | goto got_status; | |
3042 | } | |
3043 | case 'X': | |
3044 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
3045 | status->value.sig = (enum target_signal) | |
3046 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3047 | kill_kludge = 1; | |
3048 | ||
3049 | goto got_status; | |
23860348 | 3050 | case 'O': /* Console output. */ |
43ff13b4 | 3051 | remote_console_output (buf + 1); |
c4093a6a | 3052 | /* Return immediately to the event loop. The event loop will |
23860348 | 3053 | still be waiting on the inferior afterwards. */ |
c4093a6a JM |
3054 | status->kind = TARGET_WAITKIND_IGNORE; |
3055 | goto got_status; | |
43ff13b4 JM |
3056 | case '\0': |
3057 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3058 | { | |
3059 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3060 | the remote system doesn't support it. */ |
43ff13b4 JM |
3061 | target_terminal_ours_for_output (); |
3062 | printf_filtered | |
3063 | ("Can't send signals to this remote system. %s not sent.\n", | |
3064 | target_signal_to_name (last_sent_signal)); | |
3065 | last_sent_signal = TARGET_SIGNAL_0; | |
3066 | target_terminal_inferior (); | |
3067 | ||
3068 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3069 | putpkt ((char *) buf); | |
3070 | continue; | |
3071 | } | |
3072 | /* else fallthrough */ | |
3073 | default: | |
8a3fe4f8 | 3074 | warning (_("Invalid remote reply: %s"), buf); |
43ff13b4 JM |
3075 | continue; |
3076 | } | |
3077 | } | |
c5aa993b | 3078 | got_status: |
43ff13b4 JM |
3079 | if (thread_num != -1) |
3080 | { | |
39f77062 | 3081 | return pid_to_ptid (thread_num); |
43ff13b4 | 3082 | } |
39f77062 | 3083 | return inferior_ptid; |
43ff13b4 JM |
3084 | } |
3085 | ||
c906108c SS |
3086 | /* Number of bytes of registers this stub implements. */ |
3087 | ||
3088 | static int register_bytes_found; | |
3089 | ||
3090 | /* Read the remote registers into the block REGS. */ | |
ad10f812 | 3091 | /* Currently we just read all the registers, so we don't use regnum. */ |
c906108c | 3092 | |
b96ec7ac AC |
3093 | static int |
3094 | fetch_register_using_p (int regnum) | |
3095 | { | |
3096 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 3097 | char *buf = rs->buf, *p; |
b96ec7ac AC |
3098 | char regp[MAX_REGISTER_SIZE]; |
3099 | int i; | |
3100 | ||
fcad0fa4 JB |
3101 | p = buf; |
3102 | *p++ = 'p'; | |
3103 | p += hexnumstr (p, regnum); | |
3104 | *p++ = '\0'; | |
6d820c5c | 3105 | remote_send (&rs->buf, &rs->buf_size); |
3f9a994c JB |
3106 | |
3107 | /* If the stub didn't recognize the packet, or if we got an error, | |
3108 | tell our caller. */ | |
3109 | if (buf[0] == '\0' || buf[0] == 'E') | |
3110 | return 0; | |
3111 | ||
3112 | /* If this register is unfetchable, tell the regcache. */ | |
3113 | if (buf[0] == 'x') | |
8480adf2 | 3114 | { |
3f9a994c JB |
3115 | regcache_raw_supply (current_regcache, regnum, NULL); |
3116 | set_register_cached (regnum, -1); | |
8480adf2 | 3117 | return 1; |
b96ec7ac | 3118 | } |
b96ec7ac | 3119 | |
3f9a994c JB |
3120 | /* Otherwise, parse and supply the value. */ |
3121 | p = buf; | |
3122 | i = 0; | |
3123 | while (p[0] != 0) | |
3124 | { | |
3125 | if (p[1] == 0) | |
3126 | { | |
8a3fe4f8 | 3127 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
3128 | return 0; |
3129 | } | |
3130 | ||
3131 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3132 | p += 2; | |
3133 | } | |
3134 | regcache_raw_supply (current_regcache, regnum, regp); | |
3135 | return 1; | |
b96ec7ac AC |
3136 | } |
3137 | ||
c906108c | 3138 | static void |
ad10f812 | 3139 | remote_fetch_registers (int regnum) |
c906108c | 3140 | { |
d01949b6 | 3141 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 3142 | struct remote_arch_state *rsa = get_remote_arch_state (); |
6d820c5c | 3143 | char *buf = rs->buf; |
c906108c SS |
3144 | int i; |
3145 | char *p; | |
ea9c271d | 3146 | char *regs = alloca (rsa->sizeof_g_packet); |
c906108c | 3147 | |
39f77062 | 3148 | set_thread (PIDGET (inferior_ptid), 1); |
c906108c | 3149 | |
b323314b AC |
3150 | if (regnum >= 0) |
3151 | { | |
ea9c271d | 3152 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); |
b323314b AC |
3153 | gdb_assert (reg != NULL); |
3154 | if (!reg->in_g_packet) | |
3155 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 AC |
3156 | _("Attempt to fetch a non G-packet register when this " |
3157 | "remote.c does not support the p-packet.")); | |
b323314b | 3158 | } |
444abaca | 3159 | switch (remote_protocol_packets[PACKET_p].support) |
b96ec7ac AC |
3160 | { |
3161 | case PACKET_DISABLE: | |
3162 | break; | |
3163 | case PACKET_ENABLE: | |
3164 | if (fetch_register_using_p (regnum)) | |
3165 | return; | |
3166 | else | |
8a3fe4f8 | 3167 | error (_("Protocol error: p packet not recognized by stub")); |
b96ec7ac AC |
3168 | case PACKET_SUPPORT_UNKNOWN: |
3169 | if (fetch_register_using_p (regnum)) | |
3170 | { | |
3171 | /* The stub recognized the 'p' packet. Remember this. */ | |
444abaca | 3172 | remote_protocol_packets[PACKET_p].support = PACKET_ENABLE; |
b96ec7ac AC |
3173 | return; |
3174 | } | |
3175 | else | |
3176 | { | |
3177 | /* The stub does not support the 'P' packet. Use 'G' | |
3178 | instead, and don't try using 'P' in the future (it | |
3179 | will just waste our time). */ | |
444abaca | 3180 | remote_protocol_packets[PACKET_p].support = PACKET_DISABLE; |
b96ec7ac AC |
3181 | break; |
3182 | } | |
3183 | } | |
b323314b | 3184 | |
c906108c | 3185 | sprintf (buf, "g"); |
6d820c5c | 3186 | remote_send (&rs->buf, &rs->buf_size); |
c906108c | 3187 | |
11cf8741 JM |
3188 | /* Save the size of the packet sent to us by the target. Its used |
3189 | as a heuristic when determining the max size of packets that the | |
23860348 | 3190 | target can safely receive. */ |
ea9c271d DJ |
3191 | if ((rsa->actual_register_packet_size) == 0) |
3192 | (rsa->actual_register_packet_size) = strlen (buf); | |
c906108c SS |
3193 | |
3194 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 3195 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c SS |
3196 | |
3197 | /* We can get out of synch in various cases. If the first character | |
3198 | in the buffer is not a hex character, assume that has happened | |
3199 | and try to fetch another packet to read. */ | |
3200 | while ((buf[0] < '0' || buf[0] > '9') | |
3de11b2e | 3201 | && (buf[0] < 'A' || buf[0] > 'F') |
c906108c | 3202 | && (buf[0] < 'a' || buf[0] > 'f') |
23860348 | 3203 | && buf[0] != 'x') /* New: unavailable register value. */ |
c906108c SS |
3204 | { |
3205 | if (remote_debug) | |
0f71a2f6 JM |
3206 | fprintf_unfiltered (gdb_stdlog, |
3207 | "Bad register packet; fetching a new packet\n"); | |
6d820c5c | 3208 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c SS |
3209 | } |
3210 | ||
3211 | /* Reply describes registers byte by byte, each byte encoded as two | |
3212 | hex characters. Suck them all up, then supply them to the | |
3213 | register cacheing/storage mechanism. */ | |
3214 | ||
3215 | p = buf; | |
ea9c271d | 3216 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c SS |
3217 | { |
3218 | if (p[0] == 0) | |
3219 | break; | |
3220 | if (p[1] == 0) | |
3221 | { | |
8a3fe4f8 | 3222 | warning (_("Remote reply is of odd length: %s"), buf); |
c906108c SS |
3223 | /* Don't change register_bytes_found in this case, and don't |
3224 | print a second warning. */ | |
3225 | goto supply_them; | |
3226 | } | |
3227 | if (p[0] == 'x' && p[1] == 'x') | |
c5aa993b | 3228 | regs[i] = 0; /* 'x' */ |
c906108c SS |
3229 | else |
3230 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3231 | p += 2; | |
3232 | } | |
3233 | ||
3234 | if (i != register_bytes_found) | |
3235 | { | |
3236 | register_bytes_found = i; | |
2649061d AC |
3237 | if (REGISTER_BYTES_OK_P () |
3238 | && !REGISTER_BYTES_OK (i)) | |
8a3fe4f8 | 3239 | warning (_("Remote reply is too short: %s"), buf); |
c906108c | 3240 | } |
c5aa993b | 3241 | |
b323314b | 3242 | supply_them: |
ad10f812 | 3243 | { |
b323314b AC |
3244 | int i; |
3245 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) | |
ad10f812 | 3246 | { |
ea9c271d | 3247 | struct packet_reg *r = &rsa->regs[i]; |
b323314b AC |
3248 | if (r->in_g_packet) |
3249 | { | |
8ccc1287 AC |
3250 | if (r->offset * 2 >= strlen (buf)) |
3251 | /* A short packet that didn't include the register's | |
3252 | value, this implies that the register is zero (and | |
3253 | not that the register is unavailable). Supply that | |
3254 | zero value. */ | |
3255 | regcache_raw_supply (current_regcache, r->regnum, NULL); | |
3256 | else if (buf[r->offset * 2] == 'x') | |
3257 | { | |
3258 | gdb_assert (r->offset * 2 < strlen (buf)); | |
3259 | /* The register isn't available, mark it as such (at | |
3260 | the same time setting the value to zero). */ | |
3261 | regcache_raw_supply (current_regcache, r->regnum, NULL); | |
3262 | set_register_cached (i, -1); | |
3263 | } | |
3264 | else | |
3265 | regcache_raw_supply (current_regcache, r->regnum, | |
3266 | regs + r->offset); | |
b323314b | 3267 | } |
ad10f812 AC |
3268 | } |
3269 | } | |
c906108c SS |
3270 | } |
3271 | ||
3272 | /* Prepare to store registers. Since we may send them all (using a | |
3273 | 'G' request), we have to read out the ones we don't want to change | |
3274 | first. */ | |
3275 | ||
c5aa993b | 3276 | static void |
fba45db2 | 3277 | remote_prepare_to_store (void) |
c906108c | 3278 | { |
ea9c271d | 3279 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cf0e1e0d | 3280 | int i; |
cfd77fa1 | 3281 | gdb_byte buf[MAX_REGISTER_SIZE]; |
cf0e1e0d | 3282 | |
c906108c | 3283 | /* Make sure the entire registers array is valid. */ |
444abaca | 3284 | switch (remote_protocol_packets[PACKET_P].support) |
5a2468f5 JM |
3285 | { |
3286 | case PACKET_DISABLE: | |
3287 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d DJ |
3288 | /* Make sure all the necessary registers are cached. */ |
3289 | for (i = 0; i < NUM_REGS; i++) | |
ea9c271d DJ |
3290 | if (rsa->regs[i].in_g_packet) |
3291 | regcache_raw_read (current_regcache, rsa->regs[i].regnum, buf); | |
5a2468f5 JM |
3292 | break; |
3293 | case PACKET_ENABLE: | |
3294 | break; | |
3295 | } | |
3296 | } | |
3297 | ||
ad10f812 | 3298 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 3299 | packet was not recognized. */ |
5a2468f5 JM |
3300 | |
3301 | static int | |
ad10f812 | 3302 | store_register_using_P (int regnum) |
5a2468f5 | 3303 | { |
d01949b6 | 3304 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
3305 | struct remote_arch_state *rsa = get_remote_arch_state (); |
3306 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
5a2468f5 | 3307 | /* Try storing a single register. */ |
6d820c5c | 3308 | char *buf = rs->buf; |
cfd77fa1 | 3309 | gdb_byte regp[MAX_REGISTER_SIZE]; |
5a2468f5 | 3310 | char *p; |
5a2468f5 | 3311 | |
ea9c271d | 3312 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 3313 | p = buf + strlen (buf); |
822c9732 | 3314 | regcache_raw_collect (current_regcache, reg->regnum, regp); |
3acba339 | 3315 | bin2hex (regp, p, register_size (current_gdbarch, reg->regnum)); |
6d820c5c | 3316 | remote_send (&rs->buf, &rs->buf_size); |
5a2468f5 JM |
3317 | |
3318 | return buf[0] != '\0'; | |
c906108c SS |
3319 | } |
3320 | ||
5a2468f5 | 3321 | |
23860348 MS |
3322 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
3323 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
3324 | |
3325 | static void | |
ad10f812 | 3326 | remote_store_registers (int regnum) |
c906108c | 3327 | { |
d01949b6 | 3328 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 3329 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cfd77fa1 | 3330 | gdb_byte *regs; |
c906108c SS |
3331 | char *p; |
3332 | ||
39f77062 | 3333 | set_thread (PIDGET (inferior_ptid), 1); |
c906108c | 3334 | |
ad10f812 | 3335 | if (regnum >= 0) |
c906108c | 3336 | { |
444abaca | 3337 | switch (remote_protocol_packets[PACKET_P].support) |
c906108c | 3338 | { |
5a2468f5 JM |
3339 | case PACKET_DISABLE: |
3340 | break; | |
3341 | case PACKET_ENABLE: | |
ad10f812 | 3342 | if (store_register_using_P (regnum)) |
5a2468f5 JM |
3343 | return; |
3344 | else | |
8a3fe4f8 | 3345 | error (_("Protocol error: P packet not recognized by stub")); |
5a2468f5 | 3346 | case PACKET_SUPPORT_UNKNOWN: |
ad10f812 | 3347 | if (store_register_using_P (regnum)) |
5a2468f5 JM |
3348 | { |
3349 | /* The stub recognized the 'P' packet. Remember this. */ | |
444abaca | 3350 | remote_protocol_packets[PACKET_P].support = PACKET_ENABLE; |
5a2468f5 JM |
3351 | return; |
3352 | } | |
3353 | else | |
3354 | { | |
3355 | /* The stub does not support the 'P' packet. Use 'G' | |
3356 | instead, and don't try using 'P' in the future (it | |
3357 | will just waste our time). */ | |
444abaca | 3358 | remote_protocol_packets[PACKET_P].support = PACKET_DISABLE; |
5a2468f5 JM |
3359 | break; |
3360 | } | |
c906108c | 3361 | } |
c906108c SS |
3362 | } |
3363 | ||
193cb69f AC |
3364 | /* Extract all the registers in the regcache copying them into a |
3365 | local buffer. */ | |
3366 | { | |
b323314b | 3367 | int i; |
ea9c271d DJ |
3368 | regs = alloca (rsa->sizeof_g_packet); |
3369 | memset (regs, 0, rsa->sizeof_g_packet); | |
b323314b | 3370 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) |
193cb69f | 3371 | { |
ea9c271d | 3372 | struct packet_reg *r = &rsa->regs[i]; |
b323314b | 3373 | if (r->in_g_packet) |
822c9732 | 3374 | regcache_raw_collect (current_regcache, r->regnum, regs + r->offset); |
193cb69f AC |
3375 | } |
3376 | } | |
c906108c SS |
3377 | |
3378 | /* Command describes registers byte by byte, | |
3379 | each byte encoded as two hex characters. */ | |
6d820c5c | 3380 | p = rs->buf; |
193cb69f | 3381 | *p++ = 'G'; |
c906108c | 3382 | /* remote_prepare_to_store insures that register_bytes_found gets set. */ |
30559e10 | 3383 | bin2hex (regs, p, register_bytes_found); |
6d820c5c | 3384 | remote_send (&rs->buf, &rs->buf_size); |
c906108c | 3385 | } |
c906108c SS |
3386 | \f |
3387 | ||
3388 | /* Return the number of hex digits in num. */ | |
3389 | ||
3390 | static int | |
fba45db2 | 3391 | hexnumlen (ULONGEST num) |
c906108c SS |
3392 | { |
3393 | int i; | |
3394 | ||
3395 | for (i = 0; num != 0; i++) | |
3396 | num >>= 4; | |
3397 | ||
3398 | return max (i, 1); | |
3399 | } | |
3400 | ||
2df3850c | 3401 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
3402 | |
3403 | static int | |
fba45db2 | 3404 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 3405 | { |
c906108c | 3406 | int len = hexnumlen (num); |
2df3850c JM |
3407 | return hexnumnstr (buf, num, len); |
3408 | } | |
3409 | ||
c906108c | 3410 | |
2df3850c | 3411 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 3412 | |
2df3850c | 3413 | static int |
fba45db2 | 3414 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
3415 | { |
3416 | int i; | |
3417 | ||
3418 | buf[width] = '\0'; | |
3419 | ||
3420 | for (i = width - 1; i >= 0; i--) | |
c906108c | 3421 | { |
c5aa993b | 3422 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
3423 | num >>= 4; |
3424 | } | |
3425 | ||
2df3850c | 3426 | return width; |
c906108c SS |
3427 | } |
3428 | ||
23860348 | 3429 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
3430 | |
3431 | static CORE_ADDR | |
fba45db2 | 3432 | remote_address_masked (CORE_ADDR addr) |
c906108c SS |
3433 | { |
3434 | if (remote_address_size > 0 | |
3435 | && remote_address_size < (sizeof (ULONGEST) * 8)) | |
3436 | { | |
3437 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 3438 | in a ULONGEST variable. */ |
c906108c SS |
3439 | ULONGEST mask = 1; |
3440 | mask = (mask << remote_address_size) - 1; | |
3441 | addr &= mask; | |
3442 | } | |
3443 | return addr; | |
3444 | } | |
3445 | ||
3446 | /* Determine whether the remote target supports binary downloading. | |
3447 | This is accomplished by sending a no-op memory write of zero length | |
3448 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
3449 | the whole packet, since many stubs strip the eighth bit and |
3450 | subsequently compute a wrong checksum, which causes real havoc with | |
3451 | remote_write_bytes. | |
7a292a7a | 3452 | |
96baa820 JM |
3453 | NOTE: This can still lose if the serial line is not eight-bit |
3454 | clean. In cases like this, the user should clear "remote | |
23860348 | 3455 | X-packet". */ |
96baa820 | 3456 | |
c906108c | 3457 | static void |
fba45db2 | 3458 | check_binary_download (CORE_ADDR addr) |
c906108c | 3459 | { |
d01949b6 | 3460 | struct remote_state *rs = get_remote_state (); |
24b06219 | 3461 | |
444abaca | 3462 | switch (remote_protocol_packets[PACKET_X].support) |
c906108c | 3463 | { |
96baa820 JM |
3464 | case PACKET_DISABLE: |
3465 | break; | |
3466 | case PACKET_ENABLE: | |
3467 | break; | |
3468 | case PACKET_SUPPORT_UNKNOWN: | |
3469 | { | |
6d820c5c | 3470 | char *buf = rs->buf; |
96baa820 | 3471 | char *p; |
802188a7 | 3472 | |
96baa820 JM |
3473 | p = buf; |
3474 | *p++ = 'X'; | |
3475 | p += hexnumstr (p, (ULONGEST) addr); | |
3476 | *p++ = ','; | |
3477 | p += hexnumstr (p, (ULONGEST) 0); | |
3478 | *p++ = ':'; | |
3479 | *p = '\0'; | |
802188a7 | 3480 | |
96baa820 | 3481 | putpkt_binary (buf, (int) (p - buf)); |
6d820c5c | 3482 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 3483 | |
96baa820 JM |
3484 | if (buf[0] == '\0') |
3485 | { | |
3486 | if (remote_debug) | |
3487 | fprintf_unfiltered (gdb_stdlog, | |
3488 | "binary downloading NOT suppported by target\n"); | |
444abaca | 3489 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
3490 | } |
3491 | else | |
3492 | { | |
3493 | if (remote_debug) | |
3494 | fprintf_unfiltered (gdb_stdlog, | |
3495 | "binary downloading suppported by target\n"); | |
444abaca | 3496 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
3497 | } |
3498 | break; | |
3499 | } | |
c906108c SS |
3500 | } |
3501 | } | |
3502 | ||
3503 | /* Write memory data directly to the remote machine. | |
3504 | This does not inform the data cache; the data cache uses this. | |
3505 | MEMADDR is the address in the remote memory space. | |
3506 | MYADDR is the address of the buffer in our space. | |
3507 | LEN is the number of bytes. | |
3508 | ||
917317f4 | 3509 | Returns number of bytes transferred, or 0 (setting errno) for |
23860348 | 3510 | error. Only transfer a single packet. */ |
c906108c | 3511 | |
449092f6 | 3512 | int |
cfd77fa1 | 3513 | remote_write_bytes (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
c906108c | 3514 | { |
6d820c5c | 3515 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 DJ |
3516 | char *buf; |
3517 | char *p; | |
3518 | char *plen; | |
917317f4 JM |
3519 | int plenlen; |
3520 | int todo; | |
3521 | int nr_bytes; | |
a257b5bb | 3522 | int payload_size; |
cfd77fa1 | 3523 | char *payload_start; |
c906108c | 3524 | |
a257b5bb | 3525 | /* Verify that the target can support a binary download. */ |
c906108c SS |
3526 | check_binary_download (memaddr); |
3527 | ||
3de11b2e NS |
3528 | payload_size = get_memory_write_packet_size (); |
3529 | ||
6d820c5c DJ |
3530 | /* The packet buffer will be large enough for the payload; |
3531 | get_memory_packet_size ensures this. */ | |
3532 | buf = rs->buf; | |
c906108c | 3533 | |
a257b5bb | 3534 | /* Compute the size of the actual payload by subtracting out the |
3de11b2e NS |
3535 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". |
3536 | */ | |
3537 | payload_size -= strlen ("$M,:#NN"); | |
3538 | payload_size -= hexnumlen (memaddr); | |
c906108c | 3539 | |
a257b5bb | 3540 | /* Construct the packet header: "[MX]<memaddr>,<len>:". */ |
917317f4 | 3541 | |
a257b5bb | 3542 | /* Append "[XM]". Compute a best guess of the number of bytes |
23860348 | 3543 | actually transfered. */ |
a257b5bb | 3544 | p = buf; |
444abaca | 3545 | switch (remote_protocol_packets[PACKET_X].support) |
c906108c | 3546 | { |
917317f4 JM |
3547 | case PACKET_ENABLE: |
3548 | *p++ = 'X'; | |
23860348 | 3549 | /* Best guess at number of bytes that will fit. */ |
a257b5bb | 3550 | todo = min (len, payload_size); |
3de11b2e NS |
3551 | payload_size -= hexnumlen (todo); |
3552 | todo = min (todo, payload_size); | |
917317f4 JM |
3553 | break; |
3554 | case PACKET_DISABLE: | |
3555 | *p++ = 'M'; | |
23860348 | 3556 | /* Num bytes that will fit. */ |
a257b5bb | 3557 | todo = min (len, payload_size / 2); |
3de11b2e NS |
3558 | payload_size -= hexnumlen (todo); |
3559 | todo = min (todo, payload_size / 2); | |
917317f4 JM |
3560 | break; |
3561 | case PACKET_SUPPORT_UNKNOWN: | |
8e65ff28 | 3562 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3563 | _("remote_write_bytes: bad internal state")); |
7f7e9482 | 3564 | default: |
e2e0b3e5 | 3565 | internal_error (__FILE__, __LINE__, _("bad switch")); |
917317f4 | 3566 | } |
3de11b2e NS |
3567 | if (todo <= 0) |
3568 | internal_error (__FILE__, __LINE__, | |
3569 | _("minumum packet size too small to write data")); | |
802188a7 | 3570 | |
a257b5bb | 3571 | /* Append "<memaddr>". */ |
917317f4 JM |
3572 | memaddr = remote_address_masked (memaddr); |
3573 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb AC |
3574 | |
3575 | /* Append ",". */ | |
917317f4 | 3576 | *p++ = ','; |
802188a7 | 3577 | |
a257b5bb AC |
3578 | /* Append <len>. Retain the location/size of <len>. It may need to |
3579 | be adjusted once the packet body has been created. */ | |
917317f4 JM |
3580 | plen = p; |
3581 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
3582 | p += plenlen; | |
a257b5bb AC |
3583 | |
3584 | /* Append ":". */ | |
917317f4 JM |
3585 | *p++ = ':'; |
3586 | *p = '\0'; | |
802188a7 | 3587 | |
a257b5bb AC |
3588 | /* Append the packet body. */ |
3589 | payload_start = p; | |
444abaca | 3590 | switch (remote_protocol_packets[PACKET_X].support) |
917317f4 JM |
3591 | { |
3592 | case PACKET_ENABLE: | |
3593 | /* Binary mode. Send target system values byte by byte, in | |
3594 | increasing byte addresses. Only escape certain critical | |
3595 | characters. */ | |
3596 | for (nr_bytes = 0; | |
a257b5bb | 3597 | (nr_bytes < todo) && (p - payload_start) < payload_size; |
917317f4 | 3598 | nr_bytes++) |
c906108c | 3599 | { |
917317f4 JM |
3600 | switch (myaddr[nr_bytes] & 0xff) |
3601 | { | |
3602 | case '$': | |
3603 | case '#': | |
3604 | case 0x7d: | |
23860348 | 3605 | /* These must be escaped. */ |
917317f4 JM |
3606 | *p++ = 0x7d; |
3607 | *p++ = (myaddr[nr_bytes] & 0xff) ^ 0x20; | |
3608 | break; | |
3609 | default: | |
3610 | *p++ = myaddr[nr_bytes] & 0xff; | |
3611 | break; | |
3612 | } | |
c906108c | 3613 | } |
917317f4 | 3614 | if (nr_bytes < todo) |
c906108c | 3615 | { |
802188a7 | 3616 | /* Escape chars have filled up the buffer prematurely, |
917317f4 JM |
3617 | and we have actually sent fewer bytes than planned. |
3618 | Fix-up the length field of the packet. Use the same | |
3619 | number of characters as before. */ | |
917317f4 JM |
3620 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); |
3621 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 3622 | } |
917317f4 JM |
3623 | break; |
3624 | case PACKET_DISABLE: | |
3625 | /* Normal mode: Send target system values byte by byte, in | |
3626 | increasing byte addresses. Each byte is encoded as a two hex | |
3627 | value. */ | |
2644f393 | 3628 | nr_bytes = bin2hex (myaddr, p, todo); |
aa6c0017 | 3629 | p += 2 * nr_bytes; |
917317f4 JM |
3630 | break; |
3631 | case PACKET_SUPPORT_UNKNOWN: | |
8e65ff28 | 3632 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3633 | _("remote_write_bytes: bad internal state")); |
7f7e9482 | 3634 | default: |
e2e0b3e5 | 3635 | internal_error (__FILE__, __LINE__, _("bad switch")); |
c906108c | 3636 | } |
802188a7 | 3637 | |
917317f4 | 3638 | putpkt_binary (buf, (int) (p - buf)); |
6d820c5c | 3639 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 3640 | |
917317f4 JM |
3641 | if (buf[0] == 'E') |
3642 | { | |
3643 | /* There is no correspondance between what the remote protocol | |
3644 | uses for errors and errno codes. We would like a cleaner way | |
3645 | of representing errors (big enough to include errno codes, | |
3646 | bfd_error codes, and others). But for now just return EIO. */ | |
3647 | errno = EIO; | |
3648 | return 0; | |
3649 | } | |
802188a7 | 3650 | |
23860348 MS |
3651 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send |
3652 | fewer bytes than we'd planned. */ | |
917317f4 | 3653 | return nr_bytes; |
c906108c SS |
3654 | } |
3655 | ||
3656 | /* Read memory data directly from the remote machine. | |
3657 | This does not use the data cache; the data cache uses this. | |
3658 | MEMADDR is the address in the remote memory space. | |
3659 | MYADDR is the address of the buffer in our space. | |
3660 | LEN is the number of bytes. | |
3661 | ||
3662 | Returns number of bytes transferred, or 0 for error. */ | |
3663 | ||
917317f4 JM |
3664 | /* NOTE: cagney/1999-10-18: This function (and its siblings in other |
3665 | remote targets) shouldn't attempt to read the entire buffer. | |
3666 | Instead it should read a single packet worth of data and then | |
3667 | return the byte size of that packet to the caller. The caller (its | |
3668 | caller and its callers caller ;-) already contains code for | |
23860348 | 3669 | handling partial reads. */ |
917317f4 | 3670 | |
449092f6 | 3671 | int |
cfd77fa1 | 3672 | remote_read_bytes (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
c906108c | 3673 | { |
6d820c5c | 3674 | struct remote_state *rs = get_remote_state (); |
11cf8741 | 3675 | char *buf; |
23860348 | 3676 | int max_buf_size; /* Max size of packet output buffer. */ |
c906108c SS |
3677 | int origlen; |
3678 | ||
11cf8741 | 3679 | max_buf_size = get_memory_read_packet_size (); |
6d820c5c DJ |
3680 | /* The packet buffer will be large enough for the payload; |
3681 | get_memory_packet_size ensures this. */ | |
3682 | buf = rs->buf; | |
c906108c SS |
3683 | |
3684 | origlen = len; | |
3685 | while (len > 0) | |
3686 | { | |
c906108c SS |
3687 | char *p; |
3688 | int todo; | |
3689 | int i; | |
3690 | ||
c5aa993b | 3691 | todo = min (len, max_buf_size / 2); /* num bytes that will fit */ |
c906108c SS |
3692 | |
3693 | /* construct "m"<memaddr>","<len>" */ | |
3694 | /* sprintf (buf, "m%lx,%x", (unsigned long) memaddr, todo); */ | |
3695 | memaddr = remote_address_masked (memaddr); | |
3696 | p = buf; | |
3697 | *p++ = 'm'; | |
3698 | p += hexnumstr (p, (ULONGEST) memaddr); | |
3699 | *p++ = ','; | |
3700 | p += hexnumstr (p, (ULONGEST) todo); | |
3701 | *p = '\0'; | |
3702 | ||
3703 | putpkt (buf); | |
6d820c5c | 3704 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 3705 | |
66504d44 MS |
3706 | if (buf[0] == 'E' |
3707 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
3708 | && buf[3] == '\0') | |
c906108c | 3709 | { |
23860348 MS |
3710 | /* There is no correspondance between what the remote |
3711 | protocol uses for errors and errno codes. We would like | |
3712 | a cleaner way of representing errors (big enough to | |
3713 | include errno codes, bfd_error codes, and others). But | |
3714 | for now just return EIO. */ | |
c906108c SS |
3715 | errno = EIO; |
3716 | return 0; | |
3717 | } | |
3718 | ||
c5aa993b JM |
3719 | /* Reply describes memory byte by byte, |
3720 | each byte encoded as two hex characters. */ | |
c906108c SS |
3721 | |
3722 | p = buf; | |
30559e10 | 3723 | if ((i = hex2bin (p, myaddr, todo)) < todo) |
c906108c | 3724 | { |
30559e10 | 3725 | /* Reply is short. This means that we were able to read |
23860348 | 3726 | only part of what we wanted to. */ |
30559e10 | 3727 | return i + (origlen - len); |
c906108c SS |
3728 | } |
3729 | myaddr += todo; | |
3730 | memaddr += todo; | |
3731 | len -= todo; | |
3732 | } | |
3733 | return origlen; | |
3734 | } | |
3735 | \f | |
3736 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
23860348 MS |
3737 | transferring to or from debugger address BUFFER. Write to inferior |
3738 | if SHOULD_WRITE is nonzero. Returns length of data written or | |
3739 | read; 0 for error. TARGET is unused. */ | |
392a587b | 3740 | |
c906108c | 3741 | static int |
961cb7b5 | 3742 | remote_xfer_memory (CORE_ADDR mem_addr, gdb_byte *buffer, int mem_len, |
0a65a603 | 3743 | int should_write, struct mem_attrib *attrib, |
29e57380 | 3744 | struct target_ops *target) |
c906108c | 3745 | { |
392a587b JM |
3746 | CORE_ADDR targ_addr; |
3747 | int targ_len; | |
4930751a C |
3748 | int res; |
3749 | ||
f6684c31 | 3750 | /* Should this be the selected frame? */ |
23860348 MS |
3751 | gdbarch_remote_translate_xfer_address (current_gdbarch, |
3752 | current_regcache, | |
f6684c31 AC |
3753 | mem_addr, mem_len, |
3754 | &targ_addr, &targ_len); | |
392a587b | 3755 | if (targ_len <= 0) |
c906108c | 3756 | return 0; |
c906108c | 3757 | |
4930751a C |
3758 | if (should_write) |
3759 | res = remote_write_bytes (targ_addr, buffer, targ_len); | |
3760 | else | |
3761 | res = remote_read_bytes (targ_addr, buffer, targ_len); | |
3762 | ||
3763 | return res; | |
c906108c SS |
3764 | } |
3765 | ||
c906108c | 3766 | static void |
fba45db2 | 3767 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
3768 | { |
3769 | puts_filtered ("Debugging a target over a serial line.\n"); | |
3770 | } | |
3771 | \f | |
3772 | /* Stuff for dealing with the packets which are part of this protocol. | |
3773 | See comment at top of file for details. */ | |
3774 | ||
23860348 MS |
3775 | /* Read a single character from the remote end, masking it down to 7 |
3776 | bits. */ | |
c906108c SS |
3777 | |
3778 | static int | |
fba45db2 | 3779 | readchar (int timeout) |
c906108c SS |
3780 | { |
3781 | int ch; | |
3782 | ||
2cd58942 | 3783 | ch = serial_readchar (remote_desc, timeout); |
c906108c | 3784 | |
2acceee2 JM |
3785 | if (ch >= 0) |
3786 | return (ch & 0x7f); | |
3787 | ||
3788 | switch ((enum serial_rc) ch) | |
c906108c SS |
3789 | { |
3790 | case SERIAL_EOF: | |
2acceee2 | 3791 | target_mourn_inferior (); |
8a3fe4f8 | 3792 | error (_("Remote connection closed")); |
2acceee2 | 3793 | /* no return */ |
c906108c | 3794 | case SERIAL_ERROR: |
e2e0b3e5 | 3795 | perror_with_name (_("Remote communication error")); |
2acceee2 | 3796 | /* no return */ |
c906108c | 3797 | case SERIAL_TIMEOUT: |
2acceee2 | 3798 | break; |
c906108c | 3799 | } |
2acceee2 | 3800 | return ch; |
c906108c SS |
3801 | } |
3802 | ||
6d820c5c DJ |
3803 | /* Send the command in *BUF to the remote machine, and read the reply |
3804 | into *BUF. Report an error if we get an error reply. Resize | |
3805 | *BUF using xrealloc if necessary to hold the result, and update | |
3806 | *SIZEOF_BUF. */ | |
c906108c SS |
3807 | |
3808 | static void | |
6d820c5c DJ |
3809 | remote_send (char **buf, |
3810 | long *sizeof_buf) | |
c906108c | 3811 | { |
6d820c5c | 3812 | putpkt (*buf); |
c2d11a7d | 3813 | getpkt (buf, sizeof_buf, 0); |
c906108c | 3814 | |
6d820c5c DJ |
3815 | if ((*buf)[0] == 'E') |
3816 | error (_("Remote failure reply: %s"), *buf); | |
c906108c SS |
3817 | } |
3818 | ||
3819 | /* Display a null-terminated packet on stdout, for debugging, using C | |
3820 | string notation. */ | |
3821 | ||
3822 | static void | |
fba45db2 | 3823 | print_packet (char *buf) |
c906108c SS |
3824 | { |
3825 | puts_filtered ("\""); | |
43e526b9 | 3826 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
3827 | puts_filtered ("\""); |
3828 | } | |
3829 | ||
3830 | int | |
fba45db2 | 3831 | putpkt (char *buf) |
c906108c SS |
3832 | { |
3833 | return putpkt_binary (buf, strlen (buf)); | |
3834 | } | |
3835 | ||
3836 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 3837 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 3838 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
3839 | and for a possible /0 if we are debugging (remote_debug) and want |
3840 | to print the sent packet as a string. */ | |
c906108c SS |
3841 | |
3842 | static int | |
fba45db2 | 3843 | putpkt_binary (char *buf, int cnt) |
c906108c SS |
3844 | { |
3845 | int i; | |
3846 | unsigned char csum = 0; | |
11cf8741 | 3847 | char *buf2 = alloca (cnt + 6); |
085dd6e6 | 3848 | |
c906108c SS |
3849 | int ch; |
3850 | int tcount = 0; | |
3851 | char *p; | |
3852 | ||
3853 | /* Copy the packet into buffer BUF2, encapsulating it | |
3854 | and giving it a checksum. */ | |
3855 | ||
c906108c SS |
3856 | p = buf2; |
3857 | *p++ = '$'; | |
3858 | ||
3859 | for (i = 0; i < cnt; i++) | |
3860 | { | |
3861 | csum += buf[i]; | |
3862 | *p++ = buf[i]; | |
3863 | } | |
3864 | *p++ = '#'; | |
3865 | *p++ = tohex ((csum >> 4) & 0xf); | |
3866 | *p++ = tohex (csum & 0xf); | |
3867 | ||
3868 | /* Send it over and over until we get a positive ack. */ | |
3869 | ||
3870 | while (1) | |
3871 | { | |
3872 | int started_error_output = 0; | |
3873 | ||
3874 | if (remote_debug) | |
3875 | { | |
3876 | *p = '\0'; | |
43e526b9 JM |
3877 | fprintf_unfiltered (gdb_stdlog, "Sending packet: "); |
3878 | fputstrn_unfiltered (buf2, p - buf2, 0, gdb_stdlog); | |
d4f3574e | 3879 | fprintf_unfiltered (gdb_stdlog, "..."); |
0f71a2f6 | 3880 | gdb_flush (gdb_stdlog); |
c906108c | 3881 | } |
2cd58942 | 3882 | if (serial_write (remote_desc, buf2, p - buf2)) |
e2e0b3e5 | 3883 | perror_with_name (_("putpkt: write failed")); |
c906108c | 3884 | |
23860348 | 3885 | /* Read until either a timeout occurs (-2) or '+' is read. */ |
c906108c SS |
3886 | while (1) |
3887 | { | |
3888 | ch = readchar (remote_timeout); | |
3889 | ||
c5aa993b | 3890 | if (remote_debug) |
c906108c SS |
3891 | { |
3892 | switch (ch) | |
3893 | { | |
3894 | case '+': | |
1216fa2c | 3895 | case '-': |
c906108c SS |
3896 | case SERIAL_TIMEOUT: |
3897 | case '$': | |
3898 | if (started_error_output) | |
3899 | { | |
3900 | putchar_unfiltered ('\n'); | |
3901 | started_error_output = 0; | |
3902 | } | |
3903 | } | |
3904 | } | |
3905 | ||
3906 | switch (ch) | |
3907 | { | |
3908 | case '+': | |
3909 | if (remote_debug) | |
0f71a2f6 | 3910 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 3911 | return 1; |
1216fa2c AC |
3912 | case '-': |
3913 | if (remote_debug) | |
3914 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
c906108c | 3915 | case SERIAL_TIMEOUT: |
c5aa993b | 3916 | tcount++; |
c906108c SS |
3917 | if (tcount > 3) |
3918 | return 0; | |
23860348 | 3919 | break; /* Retransmit buffer. */ |
c906108c SS |
3920 | case '$': |
3921 | { | |
40e3f985 | 3922 | if (remote_debug) |
23860348 MS |
3923 | fprintf_unfiltered (gdb_stdlog, |
3924 | "Packet instead of Ack, ignoring it\n"); | |
d6f7abdf AC |
3925 | /* It's probably an old response sent because an ACK |
3926 | was lost. Gobble up the packet and ack it so it | |
3927 | doesn't get retransmitted when we resend this | |
3928 | packet. */ | |
6d820c5c | 3929 | skip_frame (); |
d6f7abdf | 3930 | serial_write (remote_desc, "+", 1); |
23860348 | 3931 | continue; /* Now, go look for +. */ |
c906108c SS |
3932 | } |
3933 | default: | |
3934 | if (remote_debug) | |
3935 | { | |
3936 | if (!started_error_output) | |
3937 | { | |
3938 | started_error_output = 1; | |
0f71a2f6 | 3939 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 3940 | } |
0f71a2f6 | 3941 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
3942 | } |
3943 | continue; | |
3944 | } | |
23860348 | 3945 | break; /* Here to retransmit. */ |
c906108c SS |
3946 | } |
3947 | ||
3948 | #if 0 | |
3949 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
3950 | able to get out next time we call QUIT, without anything as |
3951 | violent as interrupt_query. If we want to provide a way out of | |
3952 | here without getting to the next QUIT, it should be based on | |
3953 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
3954 | if (quit_flag) |
3955 | { | |
3956 | quit_flag = 0; | |
3957 | interrupt_query (); | |
3958 | } | |
3959 | #endif | |
3960 | } | |
3961 | } | |
3962 | ||
6d820c5c DJ |
3963 | /* Come here after finding the start of a frame when we expected an |
3964 | ack. Do our best to discard the rest of this packet. */ | |
3965 | ||
3966 | static void | |
3967 | skip_frame (void) | |
3968 | { | |
3969 | int c; | |
3970 | ||
3971 | while (1) | |
3972 | { | |
3973 | c = readchar (remote_timeout); | |
3974 | switch (c) | |
3975 | { | |
3976 | case SERIAL_TIMEOUT: | |
3977 | /* Nothing we can do. */ | |
3978 | return; | |
3979 | case '#': | |
3980 | /* Discard the two bytes of checksum and stop. */ | |
3981 | c = readchar (remote_timeout); | |
3982 | if (c >= 0) | |
3983 | c = readchar (remote_timeout); | |
3984 | ||
3985 | return; | |
3986 | case '*': /* Run length encoding. */ | |
3987 | /* Discard the repeat count. */ | |
3988 | c = readchar (remote_timeout); | |
3989 | if (c < 0) | |
3990 | return; | |
3991 | break; | |
3992 | default: | |
3993 | /* A regular character. */ | |
3994 | break; | |
3995 | } | |
3996 | } | |
3997 | } | |
3998 | ||
c906108c | 3999 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
4000 | into *BUF, verifying the checksum, length, and handling run-length |
4001 | compression. NUL terminate the buffer. If there is not enough room, | |
4002 | expand *BUF using xrealloc. | |
c906108c | 4003 | |
c2d11a7d JM |
4004 | Returns -1 on error, number of characters in buffer (ignoring the |
4005 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 4006 | SERIAL status indications). */ |
c2d11a7d JM |
4007 | |
4008 | static long | |
6d820c5c DJ |
4009 | read_frame (char **buf_p, |
4010 | long *sizeof_buf) | |
c906108c SS |
4011 | { |
4012 | unsigned char csum; | |
c2d11a7d | 4013 | long bc; |
c906108c | 4014 | int c; |
6d820c5c | 4015 | char *buf = *buf_p; |
c906108c SS |
4016 | |
4017 | csum = 0; | |
c2d11a7d | 4018 | bc = 0; |
c906108c SS |
4019 | |
4020 | while (1) | |
4021 | { | |
4022 | c = readchar (remote_timeout); | |
c906108c SS |
4023 | switch (c) |
4024 | { | |
4025 | case SERIAL_TIMEOUT: | |
4026 | if (remote_debug) | |
0f71a2f6 | 4027 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 4028 | return -1; |
c906108c SS |
4029 | case '$': |
4030 | if (remote_debug) | |
0f71a2f6 JM |
4031 | fputs_filtered ("Saw new packet start in middle of old one\n", |
4032 | gdb_stdlog); | |
23860348 | 4033 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
4034 | case '#': |
4035 | { | |
4036 | unsigned char pktcsum; | |
e1b09194 AC |
4037 | int check_0 = 0; |
4038 | int check_1 = 0; | |
c906108c | 4039 | |
c2d11a7d | 4040 | buf[bc] = '\0'; |
c906108c | 4041 | |
e1b09194 AC |
4042 | check_0 = readchar (remote_timeout); |
4043 | if (check_0 >= 0) | |
4044 | check_1 = readchar (remote_timeout); | |
802188a7 | 4045 | |
e1b09194 AC |
4046 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
4047 | { | |
4048 | if (remote_debug) | |
23860348 MS |
4049 | fputs_filtered ("Timeout in checksum, retrying\n", |
4050 | gdb_stdlog); | |
e1b09194 AC |
4051 | return -1; |
4052 | } | |
4053 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
4054 | { |
4055 | if (remote_debug) | |
23860348 MS |
4056 | fputs_filtered ("Communication error in checksum\n", |
4057 | gdb_stdlog); | |
40e3f985 FN |
4058 | return -1; |
4059 | } | |
c906108c | 4060 | |
e1b09194 | 4061 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 4062 | if (csum == pktcsum) |
c2d11a7d | 4063 | return bc; |
c906108c | 4064 | |
c5aa993b | 4065 | if (remote_debug) |
c906108c | 4066 | { |
0f71a2f6 | 4067 | fprintf_filtered (gdb_stdlog, |
c5aa993b | 4068 | "Bad checksum, sentsum=0x%x, csum=0x%x, buf=", |
0f71a2f6 JM |
4069 | pktcsum, csum); |
4070 | fputs_filtered (buf, gdb_stdlog); | |
4071 | fputs_filtered ("\n", gdb_stdlog); | |
c906108c | 4072 | } |
c2d11a7d | 4073 | /* Number of characters in buffer ignoring trailing |
23860348 | 4074 | NULL. */ |
c2d11a7d | 4075 | return -1; |
c906108c | 4076 | } |
23860348 | 4077 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
4078 | { |
4079 | int repeat; | |
4080 | csum += c; | |
c906108c | 4081 | |
b4501125 AC |
4082 | c = readchar (remote_timeout); |
4083 | csum += c; | |
23860348 | 4084 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 4085 | |
23860348 | 4086 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 4087 | |
6d820c5c | 4088 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 4089 | { |
6d820c5c DJ |
4090 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
4091 | { | |
4092 | /* Make some more room in the buffer. */ | |
4093 | *sizeof_buf += repeat; | |
4094 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
4095 | buf = *buf_p; | |
4096 | } | |
4097 | ||
c2d11a7d JM |
4098 | memset (&buf[bc], buf[bc - 1], repeat); |
4099 | bc += repeat; | |
c2c6d25f JM |
4100 | continue; |
4101 | } | |
4102 | ||
c2d11a7d | 4103 | buf[bc] = '\0'; |
6d820c5c | 4104 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 4105 | return -1; |
c2c6d25f | 4106 | } |
c906108c | 4107 | default: |
6d820c5c | 4108 | if (bc >= *sizeof_buf - 1) |
c906108c | 4109 | { |
6d820c5c DJ |
4110 | /* Make some more room in the buffer. */ |
4111 | *sizeof_buf *= 2; | |
4112 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
4113 | buf = *buf_p; | |
c906108c SS |
4114 | } |
4115 | ||
6d820c5c DJ |
4116 | buf[bc++] = c; |
4117 | csum += c; | |
4118 | continue; | |
c906108c SS |
4119 | } |
4120 | } | |
4121 | } | |
4122 | ||
4123 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
4124 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
4125 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
4126 | rather than timing out; this is used (in synchronous mode) to wait | |
4127 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
4128 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
4129 | don't have to change all the calls to getpkt to deal with the | |
4130 | return value, because at the moment I don't know what the right | |
23860348 | 4131 | thing to do it for those. */ |
c906108c | 4132 | void |
6d820c5c DJ |
4133 | getpkt (char **buf, |
4134 | long *sizeof_buf, | |
c2d11a7d | 4135 | int forever) |
d9fcf2fb JM |
4136 | { |
4137 | int timed_out; | |
4138 | ||
4139 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
4140 | } | |
4141 | ||
4142 | ||
4143 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
4144 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
4145 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
4146 | rather than timing out; this is used (in synchronous mode) to wait | |
4147 | for a target that is is executing user code to stop. If FOREVER == | |
4148 | 0, this function is allowed to time out gracefully and return an | |
4149 | indication of this to the caller. */ | |
3172dc30 | 4150 | static int |
6d820c5c | 4151 | getpkt_sane (char **buf, long *sizeof_buf, int forever) |
c906108c SS |
4152 | { |
4153 | int c; | |
4154 | int tries; | |
4155 | int timeout; | |
4156 | int val; | |
4157 | ||
6d820c5c | 4158 | strcpy (*buf, "timeout"); |
c906108c SS |
4159 | |
4160 | if (forever) | |
4161 | { | |
c906108c | 4162 | timeout = watchdog > 0 ? watchdog : -1; |
c906108c SS |
4163 | } |
4164 | ||
4165 | else | |
4166 | timeout = remote_timeout; | |
4167 | ||
4168 | #define MAX_TRIES 3 | |
4169 | ||
4170 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
4171 | { | |
4172 | /* This can loop forever if the remote side sends us characters | |
23860348 MS |
4173 | continuously, but if it pauses, we'll get a zero from |
4174 | readchar because of timeout. Then we'll count that as a | |
4175 | retry. */ | |
c906108c | 4176 | |
23860348 MS |
4177 | /* Note that we will only wait forever prior to the start of a |
4178 | packet. After that, we expect characters to arrive at a | |
4179 | brisk pace. They should show up within remote_timeout | |
4180 | intervals. */ | |
c906108c SS |
4181 | |
4182 | do | |
4183 | { | |
4184 | c = readchar (timeout); | |
4185 | ||
4186 | if (c == SERIAL_TIMEOUT) | |
4187 | { | |
23860348 | 4188 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 4189 | { |
2acceee2 | 4190 | QUIT; |
c906108c | 4191 | target_mourn_inferior (); |
8a3fe4f8 | 4192 | error (_("Watchdog has expired. Target detached.")); |
c906108c | 4193 | } |
c906108c | 4194 | if (remote_debug) |
0f71a2f6 | 4195 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c SS |
4196 | goto retry; |
4197 | } | |
4198 | } | |
4199 | while (c != '$'); | |
4200 | ||
4201 | /* We've found the start of a packet, now collect the data. */ | |
4202 | ||
c2d11a7d | 4203 | val = read_frame (buf, sizeof_buf); |
c906108c | 4204 | |
c2d11a7d | 4205 | if (val >= 0) |
c906108c SS |
4206 | { |
4207 | if (remote_debug) | |
43e526b9 JM |
4208 | { |
4209 | fprintf_unfiltered (gdb_stdlog, "Packet received: "); | |
6d820c5c | 4210 | fputstr_unfiltered (*buf, 0, gdb_stdlog); |
43e526b9 JM |
4211 | fprintf_unfiltered (gdb_stdlog, "\n"); |
4212 | } | |
2cd58942 | 4213 | serial_write (remote_desc, "+", 1); |
d9fcf2fb | 4214 | return 0; |
c906108c SS |
4215 | } |
4216 | ||
4217 | /* Try the whole thing again. */ | |
4218 | retry: | |
2cd58942 | 4219 | serial_write (remote_desc, "-", 1); |
c906108c SS |
4220 | } |
4221 | ||
23860348 MS |
4222 | /* We have tried hard enough, and just can't receive the packet. |
4223 | Give up. */ | |
c906108c | 4224 | |
a3f17187 | 4225 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); |
2cd58942 | 4226 | serial_write (remote_desc, "+", 1); |
d9fcf2fb | 4227 | return 1; |
c906108c SS |
4228 | } |
4229 | \f | |
4230 | static void | |
fba45db2 | 4231 | remote_kill (void) |
c906108c SS |
4232 | { |
4233 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4234 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4235 | if (kill_kludge) | |
4236 | { | |
4237 | kill_kludge = 0; | |
4238 | target_mourn_inferior (); | |
4239 | return; | |
4240 | } | |
4241 | ||
4242 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
4243 | speaking terms with the remote system. */ | |
c5aa993b | 4244 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
c906108c SS |
4245 | |
4246 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4247 | we do or not. For the existing stubs, kill is a noop. */ | |
4248 | target_mourn_inferior (); | |
4249 | } | |
4250 | ||
23860348 | 4251 | /* Async version of remote_kill. */ |
43ff13b4 | 4252 | static void |
fba45db2 | 4253 | remote_async_kill (void) |
43ff13b4 | 4254 | { |
23860348 | 4255 | /* Unregister the file descriptor from the event loop. */ |
ed9a39eb | 4256 | if (target_is_async_p ()) |
2cd58942 | 4257 | serial_async (remote_desc, NULL, 0); |
43ff13b4 JM |
4258 | |
4259 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4260 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4261 | if (kill_kludge) | |
4262 | { | |
4263 | kill_kludge = 0; | |
4264 | target_mourn_inferior (); | |
4265 | return; | |
4266 | } | |
4267 | ||
23860348 MS |
4268 | /* Use catch_errors so the user can quit from gdb even when we |
4269 | aren't on speaking terms with the remote system. */ | |
c5aa993b | 4270 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
4271 | |
4272 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4273 | we do or not. For the existing stubs, kill is a noop. */ | |
4274 | target_mourn_inferior (); | |
4275 | } | |
4276 | ||
c906108c | 4277 | static void |
fba45db2 | 4278 | remote_mourn (void) |
c906108c SS |
4279 | { |
4280 | remote_mourn_1 (&remote_ops); | |
4281 | } | |
4282 | ||
53a5351d | 4283 | static void |
fba45db2 | 4284 | remote_async_mourn (void) |
53a5351d JM |
4285 | { |
4286 | remote_mourn_1 (&remote_async_ops); | |
4287 | } | |
4288 | ||
c906108c | 4289 | static void |
fba45db2 | 4290 | extended_remote_mourn (void) |
c906108c SS |
4291 | { |
4292 | /* We do _not_ want to mourn the target like this; this will | |
4293 | remove the extended remote target from the target stack, | |
802188a7 | 4294 | and the next time the user says "run" it'll fail. |
c906108c SS |
4295 | |
4296 | FIXME: What is the right thing to do here? */ | |
4297 | #if 0 | |
4298 | remote_mourn_1 (&extended_remote_ops); | |
4299 | #endif | |
4300 | } | |
4301 | ||
4302 | /* Worker function for remote_mourn. */ | |
4303 | static void | |
fba45db2 | 4304 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
4305 | { |
4306 | unpush_target (target); | |
4307 | generic_mourn_inferior (); | |
4308 | } | |
4309 | ||
4310 | /* In the extended protocol we want to be able to do things like | |
4311 | "run" and have them basically work as expected. So we need | |
802188a7 | 4312 | a special create_inferior function. |
c906108c SS |
4313 | |
4314 | FIXME: One day add support for changing the exec file | |
4315 | we're debugging, arguments and an environment. */ | |
4316 | ||
4317 | static void | |
23860348 MS |
4318 | extended_remote_create_inferior (char *exec_file, char *args, |
4319 | char **env, int from_tty) | |
c906108c SS |
4320 | { |
4321 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4322 | the remote server. */ | |
4323 | remove_breakpoints (); | |
4324 | ||
4325 | /* Now restart the remote server. */ | |
4326 | extended_remote_restart (); | |
4327 | ||
4328 | /* Now put the breakpoints back in. This way we're safe if the | |
4329 | restart function works via a unix fork on the remote side. */ | |
4330 | insert_breakpoints (); | |
4331 | ||
4332 | /* Clean up from the last time we were running. */ | |
4333 | clear_proceed_status (); | |
c906108c SS |
4334 | } |
4335 | ||
23860348 | 4336 | /* Async version of extended_remote_create_inferior. */ |
43ff13b4 | 4337 | static void |
23860348 MS |
4338 | extended_remote_async_create_inferior (char *exec_file, char *args, |
4339 | char **env, int from_tty) | |
43ff13b4 JM |
4340 | { |
4341 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4342 | the remote server. */ | |
4343 | remove_breakpoints (); | |
4344 | ||
4345 | /* If running asynchronously, register the target file descriptor | |
23860348 | 4346 | with the event loop. */ |
362646f5 | 4347 | if (target_can_async_p ()) |
2acceee2 | 4348 | target_async (inferior_event_handler, 0); |
43ff13b4 JM |
4349 | |
4350 | /* Now restart the remote server. */ | |
4351 | extended_remote_restart (); | |
4352 | ||
4353 | /* Now put the breakpoints back in. This way we're safe if the | |
4354 | restart function works via a unix fork on the remote side. */ | |
4355 | insert_breakpoints (); | |
4356 | ||
4357 | /* Clean up from the last time we were running. */ | |
4358 | clear_proceed_status (); | |
43ff13b4 | 4359 | } |
c906108c | 4360 | \f |
c5aa993b | 4361 | |
aaab4dba | 4362 | /* On some machines, e.g. 68k, we may use a different breakpoint |
7fec2c59 AC |
4363 | instruction than other targets; in those use |
4364 | DEPRECATED_REMOTE_BREAKPOINT instead of just BREAKPOINT_FROM_PC. | |
4365 | Also, bi-endian targets may define | |
4366 | DEPRECATED_LITTLE_REMOTE_BREAKPOINT and | |
4367 | DEPRECATED_BIG_REMOTE_BREAKPOINT. If none of these are defined, we | |
4368 | just call the standard routines that are in mem-break.c. */ | |
4369 | ||
4370 | /* NOTE: cagney/2003-06-08: This is silly. A remote and simulator | |
4371 | target should use an identical BREAKPOINT_FROM_PC. As for native, | |
4372 | the ARCH-OS-tdep.c code can override the default. */ | |
4373 | ||
4374 | #if defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) && !defined(DEPRECATED_REMOTE_BREAKPOINT) | |
4375 | #define DEPRECATED_REMOTE_BREAKPOINT | |
c906108c SS |
4376 | #endif |
4377 | ||
7fec2c59 | 4378 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c SS |
4379 | |
4380 | /* If the target isn't bi-endian, just pretend it is. */ | |
7fec2c59 AC |
4381 | #if !defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && !defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) |
4382 | #define DEPRECATED_LITTLE_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT | |
4383 | #define DEPRECATED_BIG_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT | |
c906108c SS |
4384 | #endif |
4385 | ||
7fec2c59 AC |
4386 | static unsigned char big_break_insn[] = DEPRECATED_BIG_REMOTE_BREAKPOINT; |
4387 | static unsigned char little_break_insn[] = DEPRECATED_LITTLE_REMOTE_BREAKPOINT; | |
c906108c | 4388 | |
7fec2c59 | 4389 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c | 4390 | |
8181d85f DJ |
4391 | /* Insert a breakpoint. On targets that have software breakpoint |
4392 | support, we ask the remote target to do the work; on targets | |
4393 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c SS |
4394 | |
4395 | static int | |
8181d85f | 4396 | remote_insert_breakpoint (struct bp_target_info *bp_tgt) |
c906108c | 4397 | { |
8181d85f | 4398 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 4399 | struct remote_state *rs = get_remote_state (); |
7fec2c59 | 4400 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c | 4401 | int val; |
802188a7 | 4402 | #endif |
96baa820 | 4403 | |
d471ea57 AC |
4404 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
4405 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
4406 | fails, and the user has explicitly requested the Z support then | |
23860348 | 4407 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 4408 | |
444abaca | 4409 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 4410 | { |
6d820c5c | 4411 | char *p = rs->buf; |
802188a7 | 4412 | |
96baa820 JM |
4413 | *(p++) = 'Z'; |
4414 | *(p++) = '0'; | |
4415 | *(p++) = ','; | |
8181d85f DJ |
4416 | BREAKPOINT_FROM_PC (&bp_tgt->placed_address, &bp_tgt->placed_size); |
4417 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); | |
4418 | p += hexnumstr (p, addr); | |
4419 | sprintf (p, ",%d", bp_tgt->placed_size); | |
802188a7 | 4420 | |
6d820c5c DJ |
4421 | putpkt (rs->buf); |
4422 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 4423 | |
6d820c5c | 4424 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 4425 | { |
d471ea57 AC |
4426 | case PACKET_ERROR: |
4427 | return -1; | |
4428 | case PACKET_OK: | |
4429 | return 0; | |
4430 | case PACKET_UNKNOWN: | |
4431 | break; | |
96baa820 JM |
4432 | } |
4433 | } | |
c906108c | 4434 | |
802188a7 | 4435 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
8181d85f DJ |
4436 | bp_tgt->placed_size = bp_tgt->shadow_len = sizeof big_break_insn; |
4437 | val = target_read_memory (addr, bp_tgt->shadow_contents, bp_tgt->shadow_len); | |
c906108c SS |
4438 | |
4439 | if (val == 0) | |
4440 | { | |
d7449b42 | 4441 | if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) |
c906108c SS |
4442 | val = target_write_memory (addr, (char *) big_break_insn, |
4443 | sizeof big_break_insn); | |
4444 | else | |
4445 | val = target_write_memory (addr, (char *) little_break_insn, | |
4446 | sizeof little_break_insn); | |
4447 | } | |
4448 | ||
4449 | return val; | |
4450 | #else | |
8181d85f | 4451 | return memory_insert_breakpoint (bp_tgt); |
7fec2c59 | 4452 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c SS |
4453 | } |
4454 | ||
4455 | static int | |
8181d85f | 4456 | remote_remove_breakpoint (struct bp_target_info *bp_tgt) |
c906108c | 4457 | { |
8181d85f | 4458 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 4459 | struct remote_state *rs = get_remote_state (); |
96baa820 JM |
4460 | int bp_size; |
4461 | ||
444abaca | 4462 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 4463 | { |
6d820c5c | 4464 | char *p = rs->buf; |
802188a7 | 4465 | |
96baa820 JM |
4466 | *(p++) = 'z'; |
4467 | *(p++) = '0'; | |
4468 | *(p++) = ','; | |
4469 | ||
8181d85f DJ |
4470 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
4471 | p += hexnumstr (p, addr); | |
4472 | sprintf (p, ",%d", bp_tgt->placed_size); | |
802188a7 | 4473 | |
6d820c5c DJ |
4474 | putpkt (rs->buf); |
4475 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 4476 | |
6d820c5c | 4477 | return (rs->buf[0] == 'E'); |
96baa820 JM |
4478 | } |
4479 | ||
7fec2c59 | 4480 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
8181d85f DJ |
4481 | return target_write_memory (bp_tgt->placed_address, bp_tgt->shadow_contents, |
4482 | bp_tgt->shadow_len); | |
c906108c | 4483 | #else |
8181d85f | 4484 | return memory_remove_breakpoint (bp_tgt); |
7fec2c59 | 4485 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c SS |
4486 | } |
4487 | ||
d471ea57 AC |
4488 | static int |
4489 | watchpoint_to_Z_packet (int type) | |
4490 | { | |
4491 | switch (type) | |
4492 | { | |
4493 | case hw_write: | |
bb858e6a | 4494 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
4495 | break; |
4496 | case hw_read: | |
bb858e6a | 4497 | return Z_PACKET_READ_WP; |
d471ea57 AC |
4498 | break; |
4499 | case hw_access: | |
bb858e6a | 4500 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
4501 | break; |
4502 | default: | |
8e65ff28 | 4503 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4504 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
4505 | } |
4506 | } | |
4507 | ||
3c3bea1c | 4508 | static int |
fba45db2 | 4509 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 4510 | { |
d01949b6 | 4511 | struct remote_state *rs = get_remote_state (); |
e514a9d6 | 4512 | char *p; |
d471ea57 | 4513 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 4514 | |
444abaca | 4515 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
5cffb350 | 4516 | return -1; |
802188a7 | 4517 | |
6d820c5c DJ |
4518 | sprintf (rs->buf, "Z%x,", packet); |
4519 | p = strchr (rs->buf, '\0'); | |
96baa820 JM |
4520 | addr = remote_address_masked (addr); |
4521 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4522 | sprintf (p, ",%x", len); |
802188a7 | 4523 | |
6d820c5c DJ |
4524 | putpkt (rs->buf); |
4525 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 4526 | |
6d820c5c | 4527 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
4528 | { |
4529 | case PACKET_ERROR: | |
4530 | case PACKET_UNKNOWN: | |
4531 | return -1; | |
4532 | case PACKET_OK: | |
4533 | return 0; | |
4534 | } | |
8e65ff28 | 4535 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4536 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
4537 | } |
4538 | ||
d471ea57 | 4539 | |
3c3bea1c | 4540 | static int |
fba45db2 | 4541 | remote_remove_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 4542 | { |
d01949b6 | 4543 | struct remote_state *rs = get_remote_state (); |
e514a9d6 | 4544 | char *p; |
d471ea57 AC |
4545 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
4546 | ||
444abaca | 4547 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
5cffb350 | 4548 | return -1; |
802188a7 | 4549 | |
6d820c5c DJ |
4550 | sprintf (rs->buf, "z%x,", packet); |
4551 | p = strchr (rs->buf, '\0'); | |
96baa820 JM |
4552 | addr = remote_address_masked (addr); |
4553 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4554 | sprintf (p, ",%x", len); |
6d820c5c DJ |
4555 | putpkt (rs->buf); |
4556 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 4557 | |
6d820c5c | 4558 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
4559 | { |
4560 | case PACKET_ERROR: | |
4561 | case PACKET_UNKNOWN: | |
4562 | return -1; | |
4563 | case PACKET_OK: | |
4564 | return 0; | |
4565 | } | |
8e65ff28 | 4566 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4567 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
4568 | } |
4569 | ||
3c3bea1c | 4570 | |
501eef12 AC |
4571 | int remote_hw_watchpoint_limit = -1; |
4572 | int remote_hw_breakpoint_limit = -1; | |
d471ea57 | 4573 | |
b9362cc7 | 4574 | static int |
3c3bea1c | 4575 | remote_check_watch_resources (int type, int cnt, int ot) |
96baa820 | 4576 | { |
3c3bea1c GS |
4577 | if (type == bp_hardware_breakpoint) |
4578 | { | |
4579 | if (remote_hw_breakpoint_limit == 0) | |
4580 | return 0; | |
501eef12 AC |
4581 | else if (remote_hw_breakpoint_limit < 0) |
4582 | return 1; | |
3c3bea1c GS |
4583 | else if (cnt <= remote_hw_breakpoint_limit) |
4584 | return 1; | |
4585 | } | |
4586 | else | |
4587 | { | |
4588 | if (remote_hw_watchpoint_limit == 0) | |
4589 | return 0; | |
501eef12 AC |
4590 | else if (remote_hw_watchpoint_limit < 0) |
4591 | return 1; | |
3c3bea1c GS |
4592 | else if (ot) |
4593 | return -1; | |
4594 | else if (cnt <= remote_hw_watchpoint_limit) | |
4595 | return 1; | |
4596 | } | |
4597 | return -1; | |
4598 | } | |
4599 | ||
b9362cc7 | 4600 | static int |
3c3bea1c GS |
4601 | remote_stopped_by_watchpoint (void) |
4602 | { | |
4603 | return remote_stopped_by_watchpoint_p; | |
4604 | } | |
4605 | ||
7270d8f2 OF |
4606 | extern int stepped_after_stopped_by_watchpoint; |
4607 | ||
4aa7a7f5 JJ |
4608 | static int |
4609 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 4610 | { |
4aa7a7f5 | 4611 | int rc = 0; |
7270d8f2 OF |
4612 | if (remote_stopped_by_watchpoint () |
4613 | || stepped_after_stopped_by_watchpoint) | |
4aa7a7f5 JJ |
4614 | { |
4615 | *addr_p = remote_watch_data_address; | |
4616 | rc = 1; | |
4617 | } | |
4618 | ||
4619 | return rc; | |
3c3bea1c GS |
4620 | } |
4621 | ||
4622 | ||
4623 | static int | |
8181d85f | 4624 | remote_insert_hw_breakpoint (struct bp_target_info *bp_tgt) |
3c3bea1c | 4625 | { |
8181d85f | 4626 | CORE_ADDR addr; |
d01949b6 | 4627 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 4628 | char *p = rs->buf; |
802188a7 | 4629 | |
c8189ed1 | 4630 | /* The length field should be set to the size of a breakpoint |
8181d85f | 4631 | instruction, even though we aren't inserting one ourselves. */ |
c8189ed1 | 4632 | |
8181d85f | 4633 | BREAKPOINT_FROM_PC (&bp_tgt->placed_address, &bp_tgt->placed_size); |
3c3bea1c | 4634 | |
444abaca | 4635 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 NS |
4636 | return -1; |
4637 | ||
96baa820 JM |
4638 | *(p++) = 'Z'; |
4639 | *(p++) = '1'; | |
4640 | *(p++) = ','; | |
802188a7 | 4641 | |
8181d85f | 4642 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 4643 | p += hexnumstr (p, (ULONGEST) addr); |
8181d85f | 4644 | sprintf (p, ",%x", bp_tgt->placed_size); |
96baa820 | 4645 | |
6d820c5c DJ |
4646 | putpkt (rs->buf); |
4647 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 4648 | |
6d820c5c | 4649 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
4650 | { |
4651 | case PACKET_ERROR: | |
4652 | case PACKET_UNKNOWN: | |
4653 | return -1; | |
4654 | case PACKET_OK: | |
4655 | return 0; | |
4656 | } | |
8e65ff28 | 4657 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4658 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
4659 | } |
4660 | ||
d471ea57 | 4661 | |
802188a7 | 4662 | static int |
8181d85f | 4663 | remote_remove_hw_breakpoint (struct bp_target_info *bp_tgt) |
96baa820 | 4664 | { |
8181d85f | 4665 | CORE_ADDR addr; |
d01949b6 | 4666 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 4667 | char *p = rs->buf; |
c8189ed1 | 4668 | |
444abaca | 4669 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 4670 | return -1; |
802188a7 | 4671 | |
96baa820 JM |
4672 | *(p++) = 'z'; |
4673 | *(p++) = '1'; | |
4674 | *(p++) = ','; | |
802188a7 | 4675 | |
8181d85f | 4676 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 4677 | p += hexnumstr (p, (ULONGEST) addr); |
8181d85f | 4678 | sprintf (p, ",%x", bp_tgt->placed_size); |
96baa820 | 4679 | |
6d820c5c DJ |
4680 | putpkt (rs->buf); |
4681 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 4682 | |
6d820c5c | 4683 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
4684 | { |
4685 | case PACKET_ERROR: | |
4686 | case PACKET_UNKNOWN: | |
4687 | return -1; | |
4688 | case PACKET_OK: | |
4689 | return 0; | |
4690 | } | |
8e65ff28 | 4691 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4692 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 4693 | } |
96baa820 | 4694 | |
c906108c SS |
4695 | /* Some targets are only capable of doing downloads, and afterwards |
4696 | they switch to the remote serial protocol. This function provides | |
4697 | a clean way to get from the download target to the remote target. | |
4698 | It's basically just a wrapper so that we don't have to expose any | |
4699 | of the internal workings of remote.c. | |
4700 | ||
4701 | Prior to calling this routine, you should shutdown the current | |
4702 | target code, else you will get the "A program is being debugged | |
4703 | already..." message. Usually a call to pop_target() suffices. */ | |
4704 | ||
4705 | void | |
fba45db2 | 4706 | push_remote_target (char *name, int from_tty) |
c906108c | 4707 | { |
a3f17187 | 4708 | printf_filtered (_("Switching to remote protocol\n")); |
c906108c SS |
4709 | remote_open (name, from_tty); |
4710 | } | |
4711 | ||
23860348 | 4712 | /* Table used by the crc32 function to calcuate the checksum. */ |
c906108c | 4713 | |
c5aa993b JM |
4714 | static unsigned long crc32_table[256] = |
4715 | {0, 0}; | |
c906108c SS |
4716 | |
4717 | static unsigned long | |
fba45db2 | 4718 | crc32 (unsigned char *buf, int len, unsigned int crc) |
c906108c | 4719 | { |
c5aa993b | 4720 | if (!crc32_table[1]) |
c906108c | 4721 | { |
23860348 | 4722 | /* Initialize the CRC table and the decoding table. */ |
c906108c SS |
4723 | int i, j; |
4724 | unsigned int c; | |
4725 | ||
4726 | for (i = 0; i < 256; i++) | |
c5aa993b JM |
4727 | { |
4728 | for (c = i << 24, j = 8; j > 0; --j) | |
4729 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
4730 | crc32_table[i] = c; | |
4731 | } | |
c906108c SS |
4732 | } |
4733 | ||
4734 | while (len--) | |
4735 | { | |
4736 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |
4737 | buf++; | |
4738 | } | |
4739 | return crc; | |
4740 | } | |
4741 | ||
4742 | /* compare-sections command | |
4743 | ||
4744 | With no arguments, compares each loadable section in the exec bfd | |
4745 | with the same memory range on the target, and reports mismatches. | |
4746 | Useful for verifying the image on the target against the exec file. | |
4747 | Depends on the target understanding the new "qCRC:" request. */ | |
4748 | ||
e514a9d6 JM |
4749 | /* FIXME: cagney/1999-10-26: This command should be broken down into a |
4750 | target method (target verify memory) and generic version of the | |
4751 | actual command. This will allow other high-level code (especially | |
23860348 | 4752 | generic_load()) to make use of this target functionality. */ |
e514a9d6 | 4753 | |
c906108c | 4754 | static void |
fba45db2 | 4755 | compare_sections_command (char *args, int from_tty) |
c906108c | 4756 | { |
d01949b6 | 4757 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4758 | asection *s; |
4759 | unsigned long host_crc, target_crc; | |
4760 | extern bfd *exec_bfd; | |
4761 | struct cleanup *old_chain; | |
085dd6e6 JM |
4762 | char *tmp; |
4763 | char *sectdata; | |
ce359b09 | 4764 | const char *sectname; |
c906108c SS |
4765 | bfd_size_type size; |
4766 | bfd_vma lma; | |
4767 | int matched = 0; | |
4768 | int mismatched = 0; | |
4769 | ||
4770 | if (!exec_bfd) | |
8a3fe4f8 | 4771 | error (_("command cannot be used without an exec file")); |
c906108c SS |
4772 | if (!current_target.to_shortname || |
4773 | strcmp (current_target.to_shortname, "remote") != 0) | |
8a3fe4f8 | 4774 | error (_("command can only be used with remote target")); |
c906108c | 4775 | |
c5aa993b | 4776 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
4777 | { |
4778 | if (!(s->flags & SEC_LOAD)) | |
c5aa993b | 4779 | continue; /* skip non-loadable section */ |
c906108c | 4780 | |
2c500098 | 4781 | size = bfd_get_section_size (s); |
c906108c | 4782 | if (size == 0) |
c5aa993b | 4783 | continue; /* skip zero-length section */ |
c906108c | 4784 | |
ce359b09 | 4785 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 4786 | if (args && strcmp (args, sectname) != 0) |
c5aa993b | 4787 | continue; /* not the section selected by user */ |
c906108c | 4788 | |
c5aa993b | 4789 | matched = 1; /* do this section */ |
c906108c | 4790 | lma = s->lma; |
23860348 | 4791 | /* FIXME: assumes lma can fit into long. */ |
ea9c271d | 4792 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", |
ecbc58df | 4793 | (long) lma, (long) size); |
6d820c5c | 4794 | putpkt (rs->buf); |
c906108c | 4795 | |
23860348 MS |
4796 | /* Be clever; compute the host_crc before waiting for target |
4797 | reply. */ | |
c906108c | 4798 | sectdata = xmalloc (size); |
b8c9b27d | 4799 | old_chain = make_cleanup (xfree, sectdata); |
c906108c SS |
4800 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
4801 | host_crc = crc32 ((unsigned char *) sectdata, size, 0xffffffff); | |
4802 | ||
6d820c5c DJ |
4803 | getpkt (&rs->buf, &rs->buf_size, 0); |
4804 | if (rs->buf[0] == 'E') | |
8a3fe4f8 | 4805 | error (_("target memory fault, section %s, range 0x%s -- 0x%s"), |
823ca731 | 4806 | sectname, paddr (lma), paddr (lma + size)); |
6d820c5c | 4807 | if (rs->buf[0] != 'C') |
8a3fe4f8 | 4808 | error (_("remote target does not support this operation")); |
c906108c | 4809 | |
6d820c5c | 4810 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) |
c906108c SS |
4811 | target_crc = target_crc * 16 + fromhex (*tmp); |
4812 | ||
d4f3574e SS |
4813 | printf_filtered ("Section %s, range 0x%s -- 0x%s: ", |
4814 | sectname, paddr (lma), paddr (lma + size)); | |
c906108c SS |
4815 | if (host_crc == target_crc) |
4816 | printf_filtered ("matched.\n"); | |
4817 | else | |
c5aa993b JM |
4818 | { |
4819 | printf_filtered ("MIS-MATCHED!\n"); | |
4820 | mismatched++; | |
4821 | } | |
c906108c SS |
4822 | |
4823 | do_cleanups (old_chain); | |
4824 | } | |
4825 | if (mismatched > 0) | |
8a3fe4f8 AC |
4826 | warning (_("One or more sections of the remote executable does not match\n\ |
4827 | the loaded file\n")); | |
c906108c | 4828 | if (args && !matched) |
a3f17187 | 4829 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
4830 | } |
4831 | ||
1e3ff5ad | 4832 | static LONGEST |
4b8a223f | 4833 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
961cb7b5 MK |
4834 | const char *annex, gdb_byte *readbuf, |
4835 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
c906108c | 4836 | { |
d01949b6 | 4837 | struct remote_state *rs = get_remote_state (); |
c906108c | 4838 | int i; |
6d820c5c | 4839 | char *p2; |
1e3ff5ad | 4840 | char query_type; |
c906108c | 4841 | |
21e3b9b9 DJ |
4842 | /* Handle memory using remote_xfer_memory. */ |
4843 | if (object == TARGET_OBJECT_MEMORY) | |
4844 | { | |
4845 | int xfered; | |
4846 | errno = 0; | |
4847 | ||
4848 | if (writebuf != NULL) | |
4849 | { | |
4850 | void *buffer = xmalloc (len); | |
4851 | struct cleanup *cleanup = make_cleanup (xfree, buffer); | |
4852 | memcpy (buffer, writebuf, len); | |
4853 | xfered = remote_xfer_memory (offset, buffer, len, 1, NULL, ops); | |
4854 | do_cleanups (cleanup); | |
4855 | } | |
4856 | else | |
4857 | xfered = remote_xfer_memory (offset, readbuf, len, 0, NULL, ops); | |
4858 | ||
4859 | if (xfered > 0) | |
4860 | return xfered; | |
4861 | else if (xfered == 0 && errno == 0) | |
4862 | return 0; | |
4863 | else | |
4864 | return -1; | |
4865 | } | |
4866 | ||
4b8a223f AC |
4867 | /* Only handle reads. */ |
4868 | if (writebuf != NULL || readbuf == NULL) | |
4869 | return -1; | |
4870 | ||
1e3ff5ad AC |
4871 | /* Map pre-existing objects onto letters. DO NOT do this for new |
4872 | objects!!! Instead specify new query packets. */ | |
4873 | switch (object) | |
c906108c | 4874 | { |
1e3ff5ad AC |
4875 | case TARGET_OBJECT_KOD: |
4876 | query_type = 'K'; | |
4877 | break; | |
4878 | case TARGET_OBJECT_AVR: | |
4879 | query_type = 'R'; | |
4880 | break; | |
802188a7 RM |
4881 | |
4882 | case TARGET_OBJECT_AUXV: | |
444abaca | 4883 | if (remote_protocol_packets[PACKET_qPart_auxv].support != PACKET_DISABLE) |
802188a7 RM |
4884 | { |
4885 | unsigned int total = 0; | |
4886 | while (len > 0) | |
4887 | { | |
ea9c271d DJ |
4888 | LONGEST n = min ((get_remote_packet_size () - 2) / 2, len); |
4889 | snprintf (rs->buf, get_remote_packet_size (), | |
802188a7 RM |
4890 | "qPart:auxv:read::%s,%s", |
4891 | phex_nz (offset, sizeof offset), | |
4892 | phex_nz (n, sizeof n)); | |
6d820c5c | 4893 | i = putpkt (rs->buf); |
802188a7 RM |
4894 | if (i < 0) |
4895 | return total > 0 ? total : i; | |
6d820c5c DJ |
4896 | rs->buf[0] = '\0'; |
4897 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4898 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qPart_auxv]) | |
444abaca | 4899 | != PACKET_OK) |
802188a7 | 4900 | return total > 0 ? total : -1; |
6d820c5c | 4901 | if (strcmp (rs->buf, "OK") == 0) |
802188a7 RM |
4902 | break; /* Got EOF indicator. */ |
4903 | /* Got some data. */ | |
6d820c5c | 4904 | i = hex2bin (rs->buf, readbuf, len); |
802188a7 RM |
4905 | if (i > 0) |
4906 | { | |
4907 | readbuf = (void *) ((char *) readbuf + i); | |
4908 | offset += i; | |
4909 | len -= i; | |
4910 | total += i; | |
4911 | } | |
4912 | } | |
4913 | return total; | |
4914 | } | |
4915 | return -1; | |
4916 | ||
1e3ff5ad | 4917 | default: |
c906108c SS |
4918 | return -1; |
4919 | } | |
4920 | ||
4b8a223f | 4921 | /* Note: a zero OFFSET and LEN can be used to query the minimum |
1e3ff5ad | 4922 | buffer size. */ |
4b8a223f | 4923 | if (offset == 0 && len == 0) |
ea9c271d DJ |
4924 | return (get_remote_packet_size ()); |
4925 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not | |
24b06219 | 4926 | large enough let the caller deal with it. */ |
ea9c271d | 4927 | if (len < get_remote_packet_size ()) |
1e3ff5ad | 4928 | return -1; |
ea9c271d | 4929 | len = get_remote_packet_size (); |
1e3ff5ad | 4930 | |
23860348 | 4931 | /* Except for querying the minimum buffer size, target must be open. */ |
c5aa993b | 4932 | if (!remote_desc) |
8a3fe4f8 | 4933 | error (_("remote query is only available after target open")); |
c906108c | 4934 | |
1e3ff5ad | 4935 | gdb_assert (annex != NULL); |
4b8a223f | 4936 | gdb_assert (readbuf != NULL); |
c906108c | 4937 | |
6d820c5c | 4938 | p2 = rs->buf; |
c906108c SS |
4939 | *p2++ = 'q'; |
4940 | *p2++ = query_type; | |
4941 | ||
23860348 MS |
4942 | /* We used one buffer char for the remote protocol q command and |
4943 | another for the query type. As the remote protocol encapsulation | |
4944 | uses 4 chars plus one extra in case we are debugging | |
4945 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
4946 | string. */ | |
c906108c | 4947 | i = 0; |
ea9c271d | 4948 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 4949 | { |
1e3ff5ad AC |
4950 | /* Bad caller may have sent forbidden characters. */ |
4951 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
4952 | *p2++ = annex[i]; | |
c906108c SS |
4953 | i++; |
4954 | } | |
1e3ff5ad AC |
4955 | *p2 = '\0'; |
4956 | gdb_assert (annex[i] == '\0'); | |
c906108c | 4957 | |
6d820c5c | 4958 | i = putpkt (rs->buf); |
c5aa993b JM |
4959 | if (i < 0) |
4960 | return i; | |
c906108c | 4961 | |
6d820c5c DJ |
4962 | getpkt (&rs->buf, &rs->buf_size, 0); |
4963 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 4964 | |
cfd77fa1 | 4965 | return strlen ((char *) readbuf); |
c906108c SS |
4966 | } |
4967 | ||
96baa820 JM |
4968 | static void |
4969 | remote_rcmd (char *command, | |
d9fcf2fb | 4970 | struct ui_file *outbuf) |
96baa820 | 4971 | { |
d01949b6 | 4972 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 4973 | char *buf = rs->buf; |
96baa820 JM |
4974 | char *p = buf; |
4975 | ||
4976 | if (!remote_desc) | |
8a3fe4f8 | 4977 | error (_("remote rcmd is only available after target open")); |
96baa820 | 4978 | |
23860348 | 4979 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
4980 | if (command == NULL) |
4981 | command = ""; | |
4982 | ||
23860348 | 4983 | /* The query prefix. */ |
96baa820 JM |
4984 | strcpy (buf, "qRcmd,"); |
4985 | p = strchr (buf, '\0'); | |
4986 | ||
ea9c271d | 4987 | if ((strlen (buf) + strlen (command) * 2 + 8/*misc*/) > get_remote_packet_size ()) |
8a3fe4f8 | 4988 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 4989 | |
23860348 | 4990 | /* Encode the actual command. */ |
cfd77fa1 | 4991 | bin2hex ((gdb_byte *) command, p, 0); |
96baa820 | 4992 | |
6d820c5c | 4993 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 4994 | error (_("Communication problem with target.")); |
96baa820 JM |
4995 | |
4996 | /* get/display the response */ | |
4997 | while (1) | |
4998 | { | |
23860348 | 4999 | /* XXX - see also tracepoint.c:remote_get_noisy_reply(). */ |
96baa820 | 5000 | buf[0] = '\0'; |
6d820c5c | 5001 | getpkt (&rs->buf, &rs->buf_size, 0); |
96baa820 | 5002 | if (buf[0] == '\0') |
8a3fe4f8 | 5003 | error (_("Target does not support this command.")); |
96baa820 JM |
5004 | if (buf[0] == 'O' && buf[1] != 'K') |
5005 | { | |
23860348 | 5006 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
5007 | continue; |
5008 | } | |
5009 | if (strcmp (buf, "OK") == 0) | |
5010 | break; | |
7be570e7 JM |
5011 | if (strlen (buf) == 3 && buf[0] == 'E' |
5012 | && isdigit (buf[1]) && isdigit (buf[2])) | |
5013 | { | |
8a3fe4f8 | 5014 | error (_("Protocol error with Rcmd")); |
7be570e7 | 5015 | } |
96baa820 JM |
5016 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
5017 | { | |
5018 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
5019 | fputc_unfiltered (c, outbuf); | |
5020 | } | |
5021 | break; | |
5022 | } | |
5023 | } | |
5024 | ||
c906108c | 5025 | static void |
fba45db2 | 5026 | packet_command (char *args, int from_tty) |
c906108c | 5027 | { |
d01949b6 | 5028 | struct remote_state *rs = get_remote_state (); |
c906108c | 5029 | |
c5aa993b | 5030 | if (!remote_desc) |
8a3fe4f8 | 5031 | error (_("command can only be used with remote target")); |
c906108c | 5032 | |
c5aa993b | 5033 | if (!args) |
8a3fe4f8 | 5034 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
5035 | |
5036 | puts_filtered ("sending: "); | |
5037 | print_packet (args); | |
5038 | puts_filtered ("\n"); | |
5039 | putpkt (args); | |
5040 | ||
6d820c5c | 5041 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 5042 | puts_filtered ("received: "); |
6d820c5c | 5043 | print_packet (rs->buf); |
c906108c SS |
5044 | puts_filtered ("\n"); |
5045 | } | |
5046 | ||
5047 | #if 0 | |
23860348 | 5048 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 5049 | |
a14ed312 | 5050 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 5051 | |
a14ed312 | 5052 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 5053 | |
a14ed312 | 5054 | static void threadalive_test (char *cmd, int tty); |
c906108c | 5055 | |
a14ed312 | 5056 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 5057 | |
23860348 | 5058 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 5059 | |
a14ed312 | 5060 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 5061 | |
23860348 | 5062 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 5063 | |
a14ed312 | 5064 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 5065 | |
a14ed312 | 5066 | static void init_remote_threadtests (void); |
c906108c | 5067 | |
23860348 | 5068 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
5069 | |
5070 | static void | |
fba45db2 | 5071 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
5072 | { |
5073 | int sample_thread = SAMPLE_THREAD; | |
5074 | ||
a3f17187 | 5075 | printf_filtered (_("Remote threadset test\n")); |
c906108c SS |
5076 | set_thread (sample_thread, 1); |
5077 | } | |
5078 | ||
5079 | ||
5080 | static void | |
fba45db2 | 5081 | threadalive_test (char *cmd, int tty) |
c906108c SS |
5082 | { |
5083 | int sample_thread = SAMPLE_THREAD; | |
5084 | ||
39f77062 | 5085 | if (remote_thread_alive (pid_to_ptid (sample_thread))) |
c906108c SS |
5086 | printf_filtered ("PASS: Thread alive test\n"); |
5087 | else | |
5088 | printf_filtered ("FAIL: Thread alive test\n"); | |
5089 | } | |
5090 | ||
23860348 | 5091 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
5092 | |
5093 | void | |
fba45db2 | 5094 | output_threadid (char *title, threadref *ref) |
c906108c SS |
5095 | { |
5096 | char hexid[20]; | |
5097 | ||
23860348 | 5098 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
5099 | hexid[16] = 0; |
5100 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
5101 | } | |
5102 | ||
5103 | static void | |
fba45db2 | 5104 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
5105 | { |
5106 | int startflag = 1; | |
5107 | threadref nextthread; | |
5108 | int done, result_count; | |
5109 | threadref threadlist[3]; | |
5110 | ||
5111 | printf_filtered ("Remote Threadlist test\n"); | |
5112 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
5113 | &result_count, &threadlist[0])) | |
5114 | printf_filtered ("FAIL: threadlist test\n"); | |
5115 | else | |
5116 | { | |
5117 | threadref *scan = threadlist; | |
5118 | threadref *limit = scan + result_count; | |
5119 | ||
5120 | while (scan < limit) | |
5121 | output_threadid (" thread ", scan++); | |
5122 | } | |
5123 | } | |
5124 | ||
5125 | void | |
fba45db2 | 5126 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
5127 | { |
5128 | output_threadid ("Threadid: ", &info->threadid); | |
5129 | printf_filtered ("Name: %s\n ", info->shortname); | |
5130 | printf_filtered ("State: %s\n", info->display); | |
5131 | printf_filtered ("other: %s\n\n", info->more_display); | |
5132 | } | |
5133 | ||
5134 | int | |
fba45db2 | 5135 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
5136 | { |
5137 | int result; | |
5138 | int set; | |
5139 | struct gdb_ext_thread_info threadinfo; | |
5140 | ||
5141 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
5142 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
5143 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
5144 | display_thread_info (&threadinfo); | |
5145 | return result; | |
5146 | } | |
5147 | ||
5148 | static void | |
fba45db2 | 5149 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
5150 | { |
5151 | int athread = SAMPLE_THREAD; | |
5152 | threadref thread; | |
5153 | int set; | |
5154 | ||
5155 | int_to_threadref (&thread, athread); | |
5156 | printf_filtered ("Remote Threadinfo test\n"); | |
5157 | if (!get_and_display_threadinfo (&thread)) | |
5158 | printf_filtered ("FAIL cannot get thread info\n"); | |
5159 | } | |
5160 | ||
5161 | static int | |
fba45db2 | 5162 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
5163 | { |
5164 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
5165 | return get_and_display_threadinfo (ref); | |
5166 | } | |
5167 | ||
5168 | static void | |
fba45db2 | 5169 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
5170 | { |
5171 | printf_filtered ("Remote Threadlist update test\n"); | |
5172 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
5173 | } | |
5174 | ||
5175 | static void | |
5176 | init_remote_threadtests (void) | |
5177 | { | |
1bedd215 AC |
5178 | add_com ("tlist", class_obscure, threadlist_test_cmd, _("\ |
5179 | Fetch and print the remote list of thread identifiers, one pkt only")); | |
c906108c | 5180 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 5181 | _("Fetch and display info about one thread")); |
c906108c | 5182 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 5183 | _("Test setting to a different thread")); |
c906108c | 5184 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 5185 | _("Iterate through updating all remote thread info")); |
c906108c | 5186 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 5187 | _(" Remote thread alive test ")); |
c906108c SS |
5188 | } |
5189 | ||
5190 | #endif /* 0 */ | |
5191 | ||
f3fb8c85 MS |
5192 | /* Convert a thread ID to a string. Returns the string in a static |
5193 | buffer. */ | |
5194 | ||
5195 | static char * | |
39f77062 | 5196 | remote_pid_to_str (ptid_t ptid) |
f3fb8c85 | 5197 | { |
fd0a2a6f | 5198 | static char buf[32]; |
f3fb8c85 | 5199 | |
6c76e4a1 | 5200 | xsnprintf (buf, sizeof buf, "thread %d", ptid_get_pid (ptid)); |
f3fb8c85 MS |
5201 | return buf; |
5202 | } | |
5203 | ||
38691318 KB |
5204 | /* Get the address of the thread local variable in OBJFILE which is |
5205 | stored at OFFSET within the thread local storage for thread PTID. */ | |
5206 | ||
5207 | static CORE_ADDR | |
5208 | remote_get_thread_local_address (ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
5209 | { | |
444abaca | 5210 | if (remote_protocol_packets[PACKET_qGetTLSAddr].support != PACKET_DISABLE) |
38691318 KB |
5211 | { |
5212 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 5213 | char *p = rs->buf; |
571dd617 | 5214 | enum packet_result result; |
38691318 KB |
5215 | |
5216 | strcpy (p, "qGetTLSAddr:"); | |
5217 | p += strlen (p); | |
5218 | p += hexnumstr (p, PIDGET (ptid)); | |
5219 | *p++ = ','; | |
5220 | p += hexnumstr (p, offset); | |
5221 | *p++ = ','; | |
5222 | p += hexnumstr (p, lm); | |
5223 | *p++ = '\0'; | |
5224 | ||
6d820c5c DJ |
5225 | putpkt (rs->buf); |
5226 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5227 | result = packet_ok (rs->buf, &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 5228 | if (result == PACKET_OK) |
38691318 KB |
5229 | { |
5230 | ULONGEST result; | |
5231 | ||
6d820c5c | 5232 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
5233 | return result; |
5234 | } | |
571dd617 | 5235 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
5236 | throw_error (TLS_GENERIC_ERROR, |
5237 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 5238 | else |
109c3e39 AC |
5239 | throw_error (TLS_GENERIC_ERROR, |
5240 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
5241 | } |
5242 | else | |
109c3e39 AC |
5243 | throw_error (TLS_GENERIC_ERROR, |
5244 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
5245 | /* Not reached. */ |
5246 | return 0; | |
5247 | } | |
5248 | ||
c906108c | 5249 | static void |
fba45db2 | 5250 | init_remote_ops (void) |
c906108c | 5251 | { |
c5aa993b | 5252 | remote_ops.to_shortname = "remote"; |
c906108c | 5253 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 5254 | remote_ops.to_doc = |
c906108c | 5255 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
5256 | Specify the serial device it is connected to\n\ |
5257 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
5258 | remote_ops.to_open = remote_open; |
5259 | remote_ops.to_close = remote_close; | |
c906108c | 5260 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 5261 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 5262 | remote_ops.to_resume = remote_resume; |
c906108c SS |
5263 | remote_ops.to_wait = remote_wait; |
5264 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
5265 | remote_ops.to_store_registers = remote_store_registers; | |
5266 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 5267 | remote_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 5268 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
5269 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5270 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
5271 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
5272 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
5273 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; | |
5274 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
5275 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
5276 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
5277 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b JM |
5278 | remote_ops.to_kill = remote_kill; |
5279 | remote_ops.to_load = generic_load; | |
c906108c SS |
5280 | remote_ops.to_mourn_inferior = remote_mourn; |
5281 | remote_ops.to_thread_alive = remote_thread_alive; | |
0f71a2f6 | 5282 | remote_ops.to_find_new_threads = remote_threads_info; |
0caabb7e | 5283 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 5284 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
c906108c | 5285 | remote_ops.to_stop = remote_stop; |
4b8a223f | 5286 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 5287 | remote_ops.to_rcmd = remote_rcmd; |
38691318 | 5288 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; |
c906108c | 5289 | remote_ops.to_stratum = process_stratum; |
c5aa993b JM |
5290 | remote_ops.to_has_all_memory = 1; |
5291 | remote_ops.to_has_memory = 1; | |
5292 | remote_ops.to_has_stack = 1; | |
5293 | remote_ops.to_has_registers = 1; | |
5294 | remote_ops.to_has_execution = 1; | |
5295 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
5296 | remote_ops.to_magic = OPS_MAGIC; | |
c906108c SS |
5297 | } |
5298 | ||
5299 | /* Set up the extended remote vector by making a copy of the standard | |
5300 | remote vector and adding to it. */ | |
5301 | ||
5302 | static void | |
fba45db2 | 5303 | init_extended_remote_ops (void) |
c906108c SS |
5304 | { |
5305 | extended_remote_ops = remote_ops; | |
5306 | ||
0f71a2f6 | 5307 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 5308 | extended_remote_ops.to_longname = |
c906108c | 5309 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 5310 | extended_remote_ops.to_doc = |
c906108c SS |
5311 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
5312 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 5313 | extended_remote_ops.to_open = extended_remote_open; |
c906108c SS |
5314 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
5315 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
0f71a2f6 JM |
5316 | } |
5317 | ||
6426a772 JM |
5318 | static int |
5319 | remote_can_async_p (void) | |
5320 | { | |
23860348 | 5321 | /* We're async whenever the serial device is. */ |
2cd58942 | 5322 | return (current_target.to_async_mask_value) && serial_can_async_p (remote_desc); |
6426a772 JM |
5323 | } |
5324 | ||
5325 | static int | |
5326 | remote_is_async_p (void) | |
5327 | { | |
23860348 | 5328 | /* We're async whenever the serial device is. */ |
2cd58942 | 5329 | return (current_target.to_async_mask_value) && serial_is_async_p (remote_desc); |
6426a772 JM |
5330 | } |
5331 | ||
2acceee2 JM |
5332 | /* Pass the SERIAL event on and up to the client. One day this code |
5333 | will be able to delay notifying the client of an event until the | |
23860348 | 5334 | point where an entire packet has been received. */ |
2acceee2 | 5335 | |
23860348 MS |
5336 | static void (*async_client_callback) (enum inferior_event_type event_type, |
5337 | void *context); | |
2acceee2 JM |
5338 | static void *async_client_context; |
5339 | static serial_event_ftype remote_async_serial_handler; | |
5340 | ||
6426a772 | 5341 | static void |
819cc324 | 5342 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 5343 | { |
2acceee2 JM |
5344 | /* Don't propogate error information up to the client. Instead let |
5345 | the client find out about the error by querying the target. */ | |
5346 | async_client_callback (INF_REG_EVENT, async_client_context); | |
5347 | } | |
5348 | ||
5349 | static void | |
23860348 MS |
5350 | remote_async (void (*callback) (enum inferior_event_type event_type, |
5351 | void *context), void *context) | |
2acceee2 | 5352 | { |
ed9a39eb | 5353 | if (current_target.to_async_mask_value == 0) |
8e65ff28 | 5354 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5355 | _("Calling remote_async when async is masked")); |
ed9a39eb | 5356 | |
2acceee2 JM |
5357 | if (callback != NULL) |
5358 | { | |
2cd58942 | 5359 | serial_async (remote_desc, remote_async_serial_handler, NULL); |
2acceee2 JM |
5360 | async_client_callback = callback; |
5361 | async_client_context = context; | |
5362 | } | |
5363 | else | |
2cd58942 | 5364 | serial_async (remote_desc, NULL, NULL); |
6426a772 JM |
5365 | } |
5366 | ||
43ff13b4 JM |
5367 | /* Target async and target extended-async. |
5368 | ||
5369 | This are temporary targets, until it is all tested. Eventually | |
5370 | async support will be incorporated int the usual 'remote' | |
23860348 | 5371 | target. */ |
43ff13b4 JM |
5372 | |
5373 | static void | |
c2d11a7d | 5374 | init_remote_async_ops (void) |
43ff13b4 JM |
5375 | { |
5376 | remote_async_ops.to_shortname = "async"; | |
23860348 MS |
5377 | remote_async_ops.to_longname = |
5378 | "Remote serial target in async version of the gdb-specific protocol"; | |
c5aa993b | 5379 | remote_async_ops.to_doc = |
43ff13b4 JM |
5380 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
5381 | Specify the serial device it is connected to (e.g. /dev/ttya)."; | |
c5aa993b JM |
5382 | remote_async_ops.to_open = remote_async_open; |
5383 | remote_async_ops.to_close = remote_close; | |
6ad8ae5c DJ |
5384 | remote_async_ops.to_detach = remote_detach; |
5385 | remote_async_ops.to_disconnect = remote_disconnect; | |
c5aa993b JM |
5386 | remote_async_ops.to_resume = remote_async_resume; |
5387 | remote_async_ops.to_wait = remote_async_wait; | |
5388 | remote_async_ops.to_fetch_registers = remote_fetch_registers; | |
5389 | remote_async_ops.to_store_registers = remote_store_registers; | |
5390 | remote_async_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 5391 | remote_async_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 5392 | remote_async_ops.to_files_info = remote_files_info; |
43ff13b4 JM |
5393 | remote_async_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5394 | remote_async_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
5395 | remote_async_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
5396 | remote_async_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
5397 | remote_async_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
5398 | remote_async_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
5399 | remote_async_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
5400 | remote_async_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; | |
5401 | remote_async_ops.to_stopped_data_address = remote_stopped_data_address; | |
6426a772 JM |
5402 | remote_async_ops.to_terminal_inferior = remote_async_terminal_inferior; |
5403 | remote_async_ops.to_terminal_ours = remote_async_terminal_ours; | |
c5aa993b JM |
5404 | remote_async_ops.to_kill = remote_async_kill; |
5405 | remote_async_ops.to_load = generic_load; | |
53a5351d | 5406 | remote_async_ops.to_mourn_inferior = remote_async_mourn; |
c5aa993b JM |
5407 | remote_async_ops.to_thread_alive = remote_thread_alive; |
5408 | remote_async_ops.to_find_new_threads = remote_threads_info; | |
cf759d3b ND |
5409 | remote_async_ops.to_pid_to_str = remote_pid_to_str; |
5410 | remote_async_ops.to_extra_thread_info = remote_threads_extra_info; | |
43ff13b4 | 5411 | remote_async_ops.to_stop = remote_stop; |
4b8a223f | 5412 | remote_async_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 5413 | remote_async_ops.to_rcmd = remote_rcmd; |
c5aa993b JM |
5414 | remote_async_ops.to_stratum = process_stratum; |
5415 | remote_async_ops.to_has_all_memory = 1; | |
5416 | remote_async_ops.to_has_memory = 1; | |
5417 | remote_async_ops.to_has_stack = 1; | |
5418 | remote_async_ops.to_has_registers = 1; | |
5419 | remote_async_ops.to_has_execution = 1; | |
5420 | remote_async_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
6426a772 JM |
5421 | remote_async_ops.to_can_async_p = remote_can_async_p; |
5422 | remote_async_ops.to_is_async_p = remote_is_async_p; | |
5423 | remote_async_ops.to_async = remote_async; | |
ed9a39eb | 5424 | remote_async_ops.to_async_mask_value = 1; |
c5aa993b | 5425 | remote_async_ops.to_magic = OPS_MAGIC; |
43ff13b4 JM |
5426 | } |
5427 | ||
5428 | /* Set up the async extended remote vector by making a copy of the standard | |
5429 | remote vector and adding to it. */ | |
5430 | ||
5431 | static void | |
c2d11a7d | 5432 | init_extended_async_remote_ops (void) |
43ff13b4 JM |
5433 | { |
5434 | extended_async_remote_ops = remote_async_ops; | |
5435 | ||
5436 | extended_async_remote_ops.to_shortname = "extended-async"; | |
c5aa993b | 5437 | extended_async_remote_ops.to_longname = |
43ff13b4 | 5438 | "Extended remote serial target in async gdb-specific protocol"; |
c5aa993b | 5439 | extended_async_remote_ops.to_doc = |
43ff13b4 JM |
5440 | "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\ |
5441 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 5442 | extended_async_remote_ops.to_open = extended_remote_async_open; |
43ff13b4 JM |
5443 | extended_async_remote_ops.to_create_inferior = extended_remote_async_create_inferior; |
5444 | extended_async_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
5445 | } | |
5446 | ||
37a105a1 DJ |
5447 | static struct cmd_list_element *remote_set_cmdlist; |
5448 | static struct cmd_list_element *remote_show_cmdlist; | |
5449 | ||
5a2468f5 | 5450 | static void |
c2d11a7d | 5451 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 5452 | { |
5a2468f5 JM |
5453 | } |
5454 | ||
d471ea57 AC |
5455 | static void |
5456 | show_remote_cmd (char *args, int from_tty) | |
5457 | { | |
37a105a1 DJ |
5458 | /* We can't just use cmd_show_list here, because we want to skip |
5459 | the redundant "show remote Z-packet". */ | |
5460 | struct cleanup *showlist_chain; | |
5461 | struct cmd_list_element *list = remote_show_cmdlist; | |
5462 | ||
5463 | showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist"); | |
5464 | for (; list != NULL; list = list->next) | |
5465 | if (strcmp (list->name, "Z-packet") == 0) | |
5466 | continue; | |
5467 | else if (list->type == show_cmd) | |
5468 | { | |
5469 | struct cleanup *option_chain | |
5470 | = make_cleanup_ui_out_tuple_begin_end (uiout, "option"); | |
5471 | ui_out_field_string (uiout, "name", list->name); | |
5472 | ui_out_text (uiout, ": "); | |
5473 | do_setshow_command ((char *) NULL, from_tty, list); | |
5474 | /* Close the tuple. */ | |
5475 | do_cleanups (option_chain); | |
5476 | } | |
d471ea57 | 5477 | } |
5a2468f5 | 5478 | |
0f71a2f6 | 5479 | static void |
fba45db2 | 5480 | build_remote_gdbarch_data (void) |
0f71a2f6 | 5481 | { |
d696208f | 5482 | remote_address_size = TARGET_ADDR_BIT; |
0f71a2f6 JM |
5483 | } |
5484 | ||
23860348 | 5485 | /* Saved pointer to previous owner of the new_objfile event. */ |
dc8acb97 MS |
5486 | static void (*remote_new_objfile_chain) (struct objfile *); |
5487 | ||
23860348 | 5488 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
5489 | static void |
5490 | remote_new_objfile (struct objfile *objfile) | |
5491 | { | |
23860348 | 5492 | if (remote_desc != 0) /* Have a remote connection. */ |
dc8acb97 MS |
5493 | { |
5494 | remote_check_symbols (objfile); | |
5495 | } | |
23860348 | 5496 | /* Call predecessor on chain, if any. */ |
dc8acb97 MS |
5497 | if (remote_new_objfile_chain != 0 && |
5498 | remote_desc == 0) | |
5499 | remote_new_objfile_chain (objfile); | |
5500 | } | |
5501 | ||
c906108c | 5502 | void |
fba45db2 | 5503 | _initialize_remote (void) |
c906108c | 5504 | { |
ea9c271d DJ |
5505 | struct remote_state *rs; |
5506 | ||
0f71a2f6 | 5507 | /* architecture specific data */ |
23860348 MS |
5508 | remote_gdbarch_data_handle = |
5509 | gdbarch_data_register_post_init (init_remote_state); | |
d01949b6 AC |
5510 | |
5511 | /* Old tacky stuff. NOTE: This comes after the remote protocol so | |
5512 | that the remote protocol has been initialized. */ | |
046a4708 AC |
5513 | DEPRECATED_REGISTER_GDBARCH_SWAP (remote_address_size); |
5514 | deprecated_register_gdbarch_swap (NULL, 0, build_remote_gdbarch_data); | |
0f71a2f6 | 5515 | |
ea9c271d DJ |
5516 | /* Initialize the per-target state. At the moment there is only one |
5517 | of these, not one per target. Only one target is active at a | |
5518 | time. The default buffer size is unimportant; it will be expanded | |
5519 | whenever a larger buffer is needed. */ | |
5520 | rs = get_remote_state (); | |
5521 | rs->buf_size = 400; | |
5522 | rs->buf = xmalloc (rs->buf_size); | |
5523 | ||
c906108c SS |
5524 | init_remote_ops (); |
5525 | add_target (&remote_ops); | |
5526 | ||
5527 | init_extended_remote_ops (); | |
5528 | add_target (&extended_remote_ops); | |
cce74817 | 5529 | |
43ff13b4 JM |
5530 | init_remote_async_ops (); |
5531 | add_target (&remote_async_ops); | |
5532 | ||
5533 | init_extended_async_remote_ops (); | |
5534 | add_target (&extended_async_remote_ops); | |
5535 | ||
dc8acb97 | 5536 | /* Hook into new objfile notification. */ |
9a4105ab AC |
5537 | remote_new_objfile_chain = deprecated_target_new_objfile_hook; |
5538 | deprecated_target_new_objfile_hook = remote_new_objfile; | |
dc8acb97 | 5539 | |
c906108c SS |
5540 | #if 0 |
5541 | init_remote_threadtests (); | |
5542 | #endif | |
5543 | ||
23860348 | 5544 | /* set/show remote ... */ |
d471ea57 | 5545 | |
1bedd215 | 5546 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
5547 | Remote protocol specific variables\n\ |
5548 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 5549 | the packets being used"), |
cff3e48b | 5550 | &remote_set_cmdlist, "set remote ", |
23860348 | 5551 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 5552 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
5553 | Remote protocol specific variables\n\ |
5554 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 5555 | the packets being used"), |
cff3e48b | 5556 | &remote_show_cmdlist, "show remote ", |
23860348 | 5557 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 5558 | |
1a966eab AC |
5559 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
5560 | Compare section data on target to the exec file.\n\ | |
5561 | Argument is a single section name (default: all loaded sections)."), | |
c906108c SS |
5562 | &cmdlist); |
5563 | ||
1a966eab AC |
5564 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
5565 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
5566 | maintenance packet TEXT\n\ |
5567 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
5568 | this command sends the string TEXT to the inferior, and displays the\n\ | |
5569 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 5570 | terminating `#' character and checksum."), |
c906108c SS |
5571 | &maintenancelist); |
5572 | ||
7915a72c AC |
5573 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
5574 | Set whether to send break if interrupted."), _("\ | |
5575 | Show whether to send break if interrupted."), _("\ | |
5576 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
2c5b56ce | 5577 | NULL, NULL, /* FIXME: i18n: Whether to send break if interrupted is %s. */ |
e707bbc2 | 5578 | &setlist, &showlist); |
c906108c | 5579 | |
23860348 | 5580 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 5581 | |
1a966eab AC |
5582 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
5583 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 5584 | &setlist); |
1a966eab AC |
5585 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
5586 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
5587 | &showlist); |
5588 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
5589 | set_memory_write_packet_size, _("\ |
5590 | Set the maximum number of bytes per memory-write packet.\n\ | |
5591 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
5592 | default packet size. The actual limit is further reduced\n\ | |
5593 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
5594 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
5595 | &remote_set_cmdlist); |
5596 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
5597 | set_memory_read_packet_size, _("\ |
5598 | Set the maximum number of bytes per memory-read packet.\n\ | |
5599 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
5600 | default packet size. The actual limit is further reduced\n\ | |
5601 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
5602 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
5603 | &remote_set_cmdlist); |
5604 | add_cmd ("memory-write-packet-size", no_class, | |
5605 | show_memory_write_packet_size, | |
1a966eab | 5606 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
5607 | &remote_show_cmdlist); |
5608 | add_cmd ("memory-read-packet-size", no_class, | |
5609 | show_memory_read_packet_size, | |
1a966eab | 5610 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 5611 | &remote_show_cmdlist); |
c906108c | 5612 | |
b3f42336 | 5613 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
5614 | &remote_hw_watchpoint_limit, _("\ |
5615 | Set the maximum number of target hardware watchpoints."), _("\ | |
5616 | Show the maximum number of target hardware watchpoints."), _("\ | |
5617 | Specify a negative limit for unlimited."), | |
2c5b56ce | 5618 | NULL, NULL, /* FIXME: i18n: The maximum number of target hardware watchpoints is %s. */ |
b3f42336 AC |
5619 | &remote_set_cmdlist, &remote_show_cmdlist); |
5620 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, | |
7915a72c AC |
5621 | &remote_hw_breakpoint_limit, _("\ |
5622 | Set the maximum number of target hardware breakpoints."), _("\ | |
5623 | Show the maximum number of target hardware breakpoints."), _("\ | |
5624 | Specify a negative limit for unlimited."), | |
2c5b56ce | 5625 | NULL, NULL, /* FIXME: i18n: The maximum number of target hardware breakpoints is %s. */ |
b3f42336 | 5626 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 5627 | |
4d28ad1e AC |
5628 | add_setshow_integer_cmd ("remoteaddresssize", class_obscure, |
5629 | &remote_address_size, _("\ | |
5630 | Set the maximum size of the address (in bits) in a memory packet."), _("\ | |
5631 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
5632 | NULL, | |
5633 | NULL, /* FIXME: i18n: */ | |
5634 | &setlist, &showlist); | |
c906108c | 5635 | |
444abaca | 5636 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
96baa820 | 5637 | "X", "binary-download", |
444abaca DJ |
5638 | set_remote_protocol_packet_cmd, |
5639 | show_remote_protocol_packet_cmd, | |
d471ea57 AC |
5640 | &remote_set_cmdlist, &remote_show_cmdlist, |
5641 | 1); | |
0f71a2f6 | 5642 | |
444abaca | 5643 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
506fb367 | 5644 | "vCont", "verbose-resume", |
444abaca DJ |
5645 | set_remote_protocol_packet_cmd, |
5646 | show_remote_protocol_packet_cmd, | |
506fb367 DJ |
5647 | &remote_set_cmdlist, &remote_show_cmdlist, |
5648 | 0); | |
5649 | ||
444abaca | 5650 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
dc8acb97 | 5651 | "qSymbol", "symbol-lookup", |
444abaca DJ |
5652 | set_remote_protocol_packet_cmd, |
5653 | show_remote_protocol_packet_cmd, | |
dc8acb97 MS |
5654 | &remote_set_cmdlist, &remote_show_cmdlist, |
5655 | 0); | |
5656 | ||
444abaca | 5657 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
d471ea57 | 5658 | "P", "set-register", |
444abaca DJ |
5659 | set_remote_protocol_packet_cmd, |
5660 | show_remote_protocol_packet_cmd, | |
d471ea57 AC |
5661 | &remote_set_cmdlist, &remote_show_cmdlist, |
5662 | 1); | |
5663 | ||
444abaca | 5664 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
b96ec7ac | 5665 | "p", "fetch-register", |
444abaca DJ |
5666 | set_remote_protocol_packet_cmd, |
5667 | show_remote_protocol_packet_cmd, | |
b96ec7ac AC |
5668 | &remote_set_cmdlist, &remote_show_cmdlist, |
5669 | 1); | |
5670 | ||
444abaca | 5671 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
d471ea57 | 5672 | "Z0", "software-breakpoint", |
444abaca DJ |
5673 | set_remote_protocol_packet_cmd, |
5674 | show_remote_protocol_packet_cmd, | |
d471ea57 AC |
5675 | &remote_set_cmdlist, &remote_show_cmdlist, |
5676 | 0); | |
5677 | ||
444abaca | 5678 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
d471ea57 | 5679 | "Z1", "hardware-breakpoint", |
444abaca DJ |
5680 | set_remote_protocol_packet_cmd, |
5681 | show_remote_protocol_packet_cmd, | |
d471ea57 AC |
5682 | &remote_set_cmdlist, &remote_show_cmdlist, |
5683 | 0); | |
5684 | ||
444abaca | 5685 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
d471ea57 | 5686 | "Z2", "write-watchpoint", |
444abaca DJ |
5687 | set_remote_protocol_packet_cmd, |
5688 | show_remote_protocol_packet_cmd, | |
d471ea57 AC |
5689 | &remote_set_cmdlist, &remote_show_cmdlist, |
5690 | 0); | |
5691 | ||
444abaca | 5692 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
d471ea57 | 5693 | "Z3", "read-watchpoint", |
444abaca DJ |
5694 | set_remote_protocol_packet_cmd, |
5695 | show_remote_protocol_packet_cmd, | |
d471ea57 AC |
5696 | &remote_set_cmdlist, &remote_show_cmdlist, |
5697 | 0); | |
5698 | ||
444abaca | 5699 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
d471ea57 | 5700 | "Z4", "access-watchpoint", |
444abaca DJ |
5701 | set_remote_protocol_packet_cmd, |
5702 | show_remote_protocol_packet_cmd, | |
d471ea57 AC |
5703 | &remote_set_cmdlist, &remote_show_cmdlist, |
5704 | 0); | |
5705 | ||
444abaca | 5706 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qPart_auxv], |
802188a7 | 5707 | "qPart_auxv", "read-aux-vector", |
444abaca DJ |
5708 | set_remote_protocol_packet_cmd, |
5709 | show_remote_protocol_packet_cmd, | |
802188a7 RM |
5710 | &remote_set_cmdlist, &remote_show_cmdlist, |
5711 | 0); | |
5712 | ||
444abaca | 5713 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 5714 | "qGetTLSAddr", "get-thread-local-storage-address", |
444abaca DJ |
5715 | set_remote_protocol_packet_cmd, |
5716 | show_remote_protocol_packet_cmd, | |
38691318 KB |
5717 | &remote_set_cmdlist, &remote_show_cmdlist, |
5718 | 0); | |
5719 | ||
37a105a1 DJ |
5720 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
5721 | Z sub-packet has its own set and show commands, but users may | |
5722 | have sets to this variable in their .gdbinit files (or in their | |
5723 | documentation). */ | |
e9e68a56 | 5724 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
5725 | &remote_Z_packet_detect, _("\ |
5726 | Set use of remote protocol `Z' packets"), _("\ | |
5727 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 5728 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 5729 | packets."), |
e9e68a56 | 5730 | set_remote_protocol_Z_packet_cmd, |
2c5b56ce | 5731 | show_remote_protocol_Z_packet_cmd, /* FIXME: i18n: Use of remote protocol `Z' packets is %s. */ |
e9e68a56 | 5732 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 CV |
5733 | |
5734 | /* Eventually initialize fileio. See fileio.c */ | |
5735 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
c906108c | 5736 | } |