Commit | Line | Data |
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c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c | 2 | |
197e01b6 | 3 | Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, |
24b06219 | 4 | 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 |
29182b13 | 5 | Free Software Foundation, Inc. |
c906108c | 6 | |
c5aa993b JM |
7 | This file is part of GDB. |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2 of the License, or | |
12 | (at your option) any later version. | |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with this program; if not, write to the Free Software | |
197e01b6 EZ |
21 | Foundation, Inc., 51 Franklin Street, Fifth Floor, |
22 | Boston, MA 02110-1301, USA. */ | |
c5aa993b | 23 | |
23860348 | 24 | /* See the GDB User Guide for details of the GDB remote protocol. */ |
c5aa993b | 25 | |
c906108c SS |
26 | #include "defs.h" |
27 | #include "gdb_string.h" | |
28 | #include <ctype.h> | |
29 | #include <fcntl.h> | |
c906108c SS |
30 | #include "inferior.h" |
31 | #include "bfd.h" | |
32 | #include "symfile.h" | |
60250e8b | 33 | #include "exceptions.h" |
c906108c | 34 | #include "target.h" |
c5aa993b | 35 | /*#include "terminal.h" */ |
c906108c SS |
36 | #include "gdbcmd.h" |
37 | #include "objfiles.h" | |
38 | #include "gdb-stabs.h" | |
39 | #include "gdbthread.h" | |
c2c6d25f | 40 | #include "remote.h" |
4e052eda | 41 | #include "regcache.h" |
fd0407d6 | 42 | #include "value.h" |
1ff9c3d6 | 43 | #include "gdb_assert.h" |
6867ae3e | 44 | #include "observer.h" |
a77053c2 | 45 | #include "solib.h" |
37a105a1 DJ |
46 | #include "cli/cli-decode.h" |
47 | #include "cli/cli-setshow.h" | |
c906108c | 48 | |
7a292a7a | 49 | #include <ctype.h> |
9846de1b | 50 | #include <sys/time.h> |
c906108c | 51 | |
43ff13b4 | 52 | #include "event-loop.h" |
c2c6d25f | 53 | #include "event-top.h" |
2acceee2 | 54 | #include "inf-loop.h" |
43ff13b4 | 55 | |
c906108c SS |
56 | #include <signal.h> |
57 | #include "serial.h" | |
58 | ||
6240bebf MS |
59 | #include "gdbcore.h" /* for exec_bfd */ |
60 | ||
449092f6 CV |
61 | #include "remote-fileio.h" |
62 | ||
23860348 | 63 | /* Prototypes for local functions. */ |
6426a772 JM |
64 | static void cleanup_sigint_signal_handler (void *dummy); |
65 | static void initialize_sigint_signal_handler (void); | |
6d820c5c | 66 | static int getpkt_sane (char **buf, long *sizeof_buf, int forever); |
6426a772 | 67 | |
a14ed312 KB |
68 | static void handle_remote_sigint (int); |
69 | static void handle_remote_sigint_twice (int); | |
70 | static void async_remote_interrupt (gdb_client_data); | |
71 | void async_remote_interrupt_twice (gdb_client_data); | |
43ff13b4 | 72 | |
a14ed312 | 73 | static void build_remote_gdbarch_data (void); |
0f71a2f6 | 74 | |
a14ed312 | 75 | static void remote_files_info (struct target_ops *ignore); |
c906108c | 76 | |
a14ed312 | 77 | static void remote_prepare_to_store (void); |
c906108c | 78 | |
a14ed312 | 79 | static void remote_fetch_registers (int regno); |
c906108c | 80 | |
39f77062 KB |
81 | static void remote_resume (ptid_t ptid, int step, |
82 | enum target_signal siggnal); | |
83 | static void remote_async_resume (ptid_t ptid, int step, | |
a14ed312 | 84 | enum target_signal siggnal); |
a14ed312 KB |
85 | static void remote_open (char *name, int from_tty); |
86 | static void remote_async_open (char *name, int from_tty); | |
c906108c | 87 | |
a14ed312 KB |
88 | static void extended_remote_open (char *name, int from_tty); |
89 | static void extended_remote_async_open (char *name, int from_tty); | |
c906108c | 90 | |
92d1e331 DJ |
91 | static void remote_open_1 (char *, int, struct target_ops *, int extended_p, |
92 | int async_p); | |
c906108c | 93 | |
a14ed312 | 94 | static void remote_close (int quitting); |
c906108c | 95 | |
a14ed312 | 96 | static void remote_store_registers (int regno); |
c906108c | 97 | |
a14ed312 KB |
98 | static void remote_mourn (void); |
99 | static void remote_async_mourn (void); | |
c906108c | 100 | |
a14ed312 | 101 | static void extended_remote_restart (void); |
c906108c | 102 | |
a14ed312 | 103 | static void extended_remote_mourn (void); |
c906108c | 104 | |
a14ed312 | 105 | static void remote_mourn_1 (struct target_ops *); |
c906108c | 106 | |
6d820c5c | 107 | static void remote_send (char **buf, long *sizeof_buf_p); |
c906108c | 108 | |
a14ed312 | 109 | static int readchar (int timeout); |
c906108c | 110 | |
39f77062 KB |
111 | static ptid_t remote_wait (ptid_t ptid, |
112 | struct target_waitstatus *status); | |
113 | static ptid_t remote_async_wait (ptid_t ptid, | |
114 | struct target_waitstatus *status); | |
c906108c | 115 | |
a14ed312 KB |
116 | static void remote_kill (void); |
117 | static void remote_async_kill (void); | |
c906108c | 118 | |
a14ed312 | 119 | static int tohex (int nib); |
c906108c | 120 | |
a14ed312 | 121 | static void remote_detach (char *args, int from_tty); |
c906108c | 122 | |
a14ed312 | 123 | static void remote_interrupt (int signo); |
c906108c | 124 | |
a14ed312 | 125 | static void remote_interrupt_twice (int signo); |
7a292a7a | 126 | |
a14ed312 | 127 | static void interrupt_query (void); |
c906108c | 128 | |
a14ed312 | 129 | static void set_thread (int, int); |
c906108c | 130 | |
39f77062 | 131 | static int remote_thread_alive (ptid_t); |
c906108c | 132 | |
a14ed312 | 133 | static void get_offsets (void); |
c906108c | 134 | |
6d820c5c DJ |
135 | static void skip_frame (void); |
136 | ||
137 | static long read_frame (char **buf_p, long *sizeof_buf); | |
c906108c | 138 | |
a14ed312 | 139 | static int hexnumlen (ULONGEST num); |
c906108c | 140 | |
a14ed312 | 141 | static void init_remote_ops (void); |
c906108c | 142 | |
a14ed312 | 143 | static void init_extended_remote_ops (void); |
c906108c | 144 | |
a14ed312 | 145 | static void remote_stop (void); |
c906108c | 146 | |
a14ed312 | 147 | static int ishex (int ch, int *val); |
c906108c | 148 | |
a14ed312 | 149 | static int stubhex (int ch); |
c906108c | 150 | |
a14ed312 | 151 | static int hexnumstr (char *, ULONGEST); |
c906108c | 152 | |
a14ed312 | 153 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 154 | |
a14ed312 | 155 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 156 | |
a14ed312 | 157 | static void print_packet (char *); |
c906108c | 158 | |
a14ed312 | 159 | static unsigned long crc32 (unsigned char *, int, unsigned int); |
c906108c | 160 | |
a14ed312 | 161 | static void compare_sections_command (char *, int); |
c906108c | 162 | |
a14ed312 | 163 | static void packet_command (char *, int); |
c906108c | 164 | |
a14ed312 | 165 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 166 | |
39f77062 | 167 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 168 | |
a14ed312 | 169 | static void remote_find_new_threads (void); |
c906108c | 170 | |
a14ed312 | 171 | static void record_currthread (int currthread); |
c906108c | 172 | |
30559e10 | 173 | static int fromhex (int a); |
c906108c | 174 | |
cfd77fa1 | 175 | static int hex2bin (const char *hex, gdb_byte *bin, int count); |
c906108c | 176 | |
cfd77fa1 | 177 | static int bin2hex (const gdb_byte *bin, char *hex, int count); |
234fa6d1 | 178 | |
a14ed312 | 179 | static int putpkt_binary (char *buf, int cnt); |
c906108c | 180 | |
a14ed312 | 181 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 182 | |
5a2468f5 | 183 | struct packet_config; |
5a2468f5 | 184 | |
a14ed312 | 185 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 186 | |
d471ea57 | 187 | static void update_packet_config (struct packet_config *config); |
5a2468f5 | 188 | |
bb572ddd DJ |
189 | static void set_remote_protocol_packet_cmd (char *args, int from_tty, |
190 | struct cmd_list_element *c); | |
191 | ||
192 | static void show_remote_protocol_packet_cmd (struct ui_file *file, | |
193 | int from_tty, | |
194 | struct cmd_list_element *c, | |
195 | const char *value); | |
196 | ||
a14ed312 | 197 | void _initialize_remote (void); |
c906108c | 198 | |
bb572ddd DJ |
199 | /* For "set remote" and "show remote". */ |
200 | ||
201 | static struct cmd_list_element *remote_set_cmdlist; | |
202 | static struct cmd_list_element *remote_show_cmdlist; | |
203 | ||
ea9c271d DJ |
204 | /* Description of the remote protocol state for the currently |
205 | connected target. This is per-target state, and independent of the | |
206 | selected architecture. */ | |
207 | ||
208 | struct remote_state | |
209 | { | |
210 | /* A buffer to use for incoming packets, and its current size. The | |
211 | buffer is grown dynamically for larger incoming packets. | |
212 | Outgoing packets may also be constructed in this buffer. | |
213 | BUF_SIZE is always at least REMOTE_PACKET_SIZE; | |
214 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing | |
215 | packets. */ | |
216 | char *buf; | |
217 | long buf_size; | |
218 | }; | |
219 | ||
220 | /* This data could be associated with a target, but we do not always | |
221 | have access to the current target when we need it, so for now it is | |
222 | static. This will be fine for as long as only one target is in use | |
223 | at a time. */ | |
224 | static struct remote_state remote_state; | |
225 | ||
226 | static struct remote_state * | |
227 | get_remote_state (void) | |
228 | { | |
229 | return &remote_state; | |
230 | } | |
231 | ||
232 | /* Description of the remote protocol for a given architecture. */ | |
d01949b6 | 233 | |
ad10f812 AC |
234 | struct packet_reg |
235 | { | |
236 | long offset; /* Offset into G packet. */ | |
237 | long regnum; /* GDB's internal register number. */ | |
238 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 239 | int in_g_packet; /* Always part of G packet. */ |
23860348 MS |
240 | /* long size in bytes; == register_size (current_gdbarch, regnum); |
241 | at present. */ | |
ad10f812 AC |
242 | /* char *name; == REGISTER_NAME (regnum); at present. */ |
243 | }; | |
244 | ||
ea9c271d | 245 | struct remote_arch_state |
d01949b6 | 246 | { |
ad10f812 AC |
247 | /* Description of the remote protocol registers. */ |
248 | long sizeof_g_packet; | |
b323314b AC |
249 | |
250 | /* Description of the remote protocol registers indexed by REGNUM | |
251 | (making an array of NUM_REGS + NUM_PSEUDO_REGS in size). */ | |
252 | struct packet_reg *regs; | |
ad10f812 | 253 | |
d01949b6 AC |
254 | /* This is the size (in chars) of the first response to the ``g'' |
255 | packet. It is used as a heuristic when determining the maximum | |
256 | size of memory-read and memory-write packets. A target will | |
257 | typically only reserve a buffer large enough to hold the ``g'' | |
258 | packet. The size does not include packet overhead (headers and | |
23860348 | 259 | trailers). */ |
d01949b6 AC |
260 | long actual_register_packet_size; |
261 | ||
262 | /* This is the maximum size (in chars) of a non read/write packet. | |
23860348 | 263 | It is also used as a cap on the size of read/write packets. */ |
d01949b6 AC |
264 | long remote_packet_size; |
265 | }; | |
266 | ||
3c3bea1c | 267 | |
d01949b6 AC |
268 | /* Handle for retreving the remote protocol data from gdbarch. */ |
269 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
270 | ||
ea9c271d DJ |
271 | static struct remote_arch_state * |
272 | get_remote_arch_state (void) | |
d01949b6 | 273 | { |
451fbdda | 274 | return gdbarch_data (current_gdbarch, remote_gdbarch_data_handle); |
d01949b6 AC |
275 | } |
276 | ||
277 | static void * | |
278 | init_remote_state (struct gdbarch *gdbarch) | |
279 | { | |
280 | int regnum; | |
ea9c271d DJ |
281 | struct remote_state *rs = get_remote_state (); |
282 | struct remote_arch_state *rsa; | |
283 | ||
284 | rsa = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_arch_state); | |
d01949b6 | 285 | |
ea9c271d | 286 | rsa->sizeof_g_packet = 0; |
ad10f812 | 287 | |
b323314b | 288 | /* Assume a 1:1 regnum<->pnum table. */ |
ea9c271d DJ |
289 | rsa->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, NUM_REGS + NUM_PSEUDO_REGS, |
290 | struct packet_reg); | |
b323314b | 291 | for (regnum = 0; regnum < NUM_REGS + NUM_PSEUDO_REGS; regnum++) |
ad10f812 | 292 | { |
ea9c271d | 293 | struct packet_reg *r = &rsa->regs[regnum]; |
b323314b AC |
294 | r->pnum = regnum; |
295 | r->regnum = regnum; | |
62700349 | 296 | r->offset = DEPRECATED_REGISTER_BYTE (regnum); |
b323314b | 297 | r->in_g_packet = (regnum < NUM_REGS); |
ad10f812 | 298 | /* ...name = REGISTER_NAME (regnum); */ |
7d58c67d | 299 | |
23860348 | 300 | /* Compute packet size by accumulating the size of all registers. */ |
46845f5e | 301 | if (regnum < NUM_REGS) |
ea9c271d | 302 | rsa->sizeof_g_packet += register_size (current_gdbarch, regnum); |
ad10f812 AC |
303 | } |
304 | ||
d01949b6 AC |
305 | /* Default maximum number of characters in a packet body. Many |
306 | remote stubs have a hardwired buffer size of 400 bytes | |
307 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
308 | as the maximum packet-size to ensure that the packet and an extra | |
309 | NUL character can always fit in the buffer. This stops GDB | |
310 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d DJ |
311 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
312 | rsa->remote_packet_size = 400 - 1; | |
d01949b6 | 313 | |
ea9c271d DJ |
314 | /* This one is filled in when a ``g'' packet is received. */ |
315 | rsa->actual_register_packet_size = 0; | |
316 | ||
317 | /* Should rsa->sizeof_g_packet needs more space than the | |
ad10f812 AC |
318 | default, adjust the size accordingly. Remember that each byte is |
319 | encoded as two characters. 32 is the overhead for the packet | |
320 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 321 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 322 | little. */ |
ea9c271d DJ |
323 | if (rsa->sizeof_g_packet > ((rsa->remote_packet_size - 32) / 2)) |
324 | rsa->remote_packet_size = (rsa->sizeof_g_packet * 2 + 32); | |
802188a7 | 325 | |
ea9c271d DJ |
326 | /* Make sure that the packet buffer is plenty big enough for |
327 | this architecture. */ | |
328 | if (rs->buf_size < rsa->remote_packet_size) | |
329 | { | |
330 | rs->buf_size = 2 * rsa->remote_packet_size; | |
331 | rs->buf = xmalloc (rs->buf_size); | |
332 | } | |
6d820c5c | 333 | |
ea9c271d DJ |
334 | return rsa; |
335 | } | |
336 | ||
337 | /* Return the current allowed size of a remote packet. This is | |
338 | inferred from the current architecture, and should be used to | |
339 | limit the length of outgoing packets. */ | |
340 | static long | |
341 | get_remote_packet_size (void) | |
342 | { | |
343 | struct remote_arch_state *rsa = get_remote_arch_state (); | |
344 | ||
345 | return rsa->remote_packet_size; | |
d01949b6 AC |
346 | } |
347 | ||
ad10f812 | 348 | static struct packet_reg * |
ea9c271d | 349 | packet_reg_from_regnum (struct remote_arch_state *rsa, long regnum) |
ad10f812 | 350 | { |
b323314b AC |
351 | if (regnum < 0 && regnum >= NUM_REGS + NUM_PSEUDO_REGS) |
352 | return NULL; | |
353 | else | |
ad10f812 | 354 | { |
ea9c271d | 355 | struct packet_reg *r = &rsa->regs[regnum]; |
b323314b AC |
356 | gdb_assert (r->regnum == regnum); |
357 | return r; | |
ad10f812 | 358 | } |
ad10f812 AC |
359 | } |
360 | ||
361 | static struct packet_reg * | |
ea9c271d | 362 | packet_reg_from_pnum (struct remote_arch_state *rsa, LONGEST pnum) |
ad10f812 | 363 | { |
b323314b AC |
364 | int i; |
365 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) | |
ad10f812 | 366 | { |
ea9c271d | 367 | struct packet_reg *r = &rsa->regs[i]; |
b323314b AC |
368 | if (r->pnum == pnum) |
369 | return r; | |
ad10f812 AC |
370 | } |
371 | return NULL; | |
d01949b6 AC |
372 | } |
373 | ||
3c3bea1c GS |
374 | /* FIXME: graces/2002-08-08: These variables should eventually be |
375 | bound to an instance of the target object (as in gdbarch-tdep()), | |
376 | when such a thing exists. */ | |
377 | ||
378 | /* This is set to the data address of the access causing the target | |
379 | to stop for a watchpoint. */ | |
380 | static CORE_ADDR remote_watch_data_address; | |
381 | ||
94e08568 | 382 | /* This is non-zero if target stopped for a watchpoint. */ |
3c3bea1c GS |
383 | static int remote_stopped_by_watchpoint_p; |
384 | ||
c906108c SS |
385 | static struct target_ops remote_ops; |
386 | ||
387 | static struct target_ops extended_remote_ops; | |
388 | ||
43ff13b4 | 389 | /* Temporary target ops. Just like the remote_ops and |
23860348 | 390 | extended_remote_ops, but with asynchronous support. */ |
43ff13b4 JM |
391 | static struct target_ops remote_async_ops; |
392 | ||
393 | static struct target_ops extended_async_remote_ops; | |
394 | ||
6426a772 JM |
395 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
396 | ``forever'' still use the normal timeout mechanism. This is | |
397 | currently used by the ASYNC code to guarentee that target reads | |
398 | during the initial connect always time-out. Once getpkt has been | |
399 | modified to return a timeout indication and, in turn | |
400 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 401 | this can go away. */ |
6426a772 JM |
402 | static int wait_forever_enabled_p = 1; |
403 | ||
404 | ||
c906108c SS |
405 | /* This variable chooses whether to send a ^C or a break when the user |
406 | requests program interruption. Although ^C is usually what remote | |
407 | systems expect, and that is the default here, sometimes a break is | |
408 | preferable instead. */ | |
409 | ||
410 | static int remote_break; | |
411 | ||
c906108c SS |
412 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
413 | remote_open knows that we don't have a file open when the program | |
414 | starts. */ | |
819cc324 | 415 | static struct serial *remote_desc = NULL; |
c906108c | 416 | |
c906108c SS |
417 | /* This variable sets the number of bits in an address that are to be |
418 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
419 | leading zeros, the entire address would be sent. This variable | |
420 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The | |
421 | initial implementation of remote.c restricted the address sent in | |
422 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
423 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
424 | address was never sent. Since fixing this bug may cause a break in | |
425 | some remote targets this variable is principly provided to | |
23860348 | 426 | facilitate backward compatibility. */ |
c906108c SS |
427 | |
428 | static int remote_address_size; | |
429 | ||
6426a772 JM |
430 | /* Tempoary to track who currently owns the terminal. See |
431 | target_async_terminal_* for more details. */ | |
432 | ||
433 | static int remote_async_terminal_ours_p; | |
434 | ||
11cf8741 | 435 | \f |
11cf8741 | 436 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
437 | memory read/write packet. MIN (rsa->remote_packet_size, |
438 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 439 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
440 | (speed up transfers). The variables ``preferred_*'' (the user |
441 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 442 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
443 | |
444 | struct memory_packet_config | |
445 | { | |
446 | char *name; | |
447 | long size; | |
448 | int fixed_p; | |
449 | }; | |
450 | ||
451 | /* Compute the current size of a read/write packet. Since this makes | |
452 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
453 | ||
454 | static long | |
455 | get_memory_packet_size (struct memory_packet_config *config) | |
456 | { | |
d01949b6 | 457 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
458 | struct remote_arch_state *rsa = get_remote_arch_state (); |
459 | ||
11cf8741 JM |
460 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk |
461 | law?) that some hosts don't cope very well with large alloca() | |
462 | calls. Eventually the alloca() code will be replaced by calls to | |
463 | xmalloc() and make_cleanups() allowing this restriction to either | |
23860348 | 464 | be lifted or removed. */ |
11cf8741 JM |
465 | #ifndef MAX_REMOTE_PACKET_SIZE |
466 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
467 | #endif | |
3de11b2e | 468 | /* NOTE: 20 ensures we can write at least one byte. */ |
11cf8741 | 469 | #ifndef MIN_REMOTE_PACKET_SIZE |
3de11b2e | 470 | #define MIN_REMOTE_PACKET_SIZE 20 |
11cf8741 JM |
471 | #endif |
472 | long what_they_get; | |
473 | if (config->fixed_p) | |
474 | { | |
475 | if (config->size <= 0) | |
476 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
477 | else | |
478 | what_they_get = config->size; | |
479 | } | |
480 | else | |
481 | { | |
ea9c271d | 482 | what_they_get = get_remote_packet_size (); |
23860348 | 483 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
484 | if (config->size > 0 |
485 | && what_they_get > config->size) | |
486 | what_they_get = config->size; | |
23860348 | 487 | /* Limit it to the size of the targets ``g'' response. */ |
ea9c271d DJ |
488 | if ((rsa->actual_register_packet_size) > 0 |
489 | && what_they_get > (rsa->actual_register_packet_size)) | |
490 | what_they_get = (rsa->actual_register_packet_size); | |
11cf8741 JM |
491 | } |
492 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
493 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
494 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
495 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
6d820c5c DJ |
496 | |
497 | /* Make sure there is room in the global buffer for this packet | |
498 | (including its trailing NUL byte). */ | |
499 | if (rs->buf_size < what_they_get + 1) | |
500 | { | |
501 | rs->buf_size = 2 * what_they_get; | |
502 | rs->buf = xrealloc (rs->buf, 2 * what_they_get); | |
503 | } | |
504 | ||
11cf8741 JM |
505 | return what_they_get; |
506 | } | |
507 | ||
508 | /* Update the size of a read/write packet. If they user wants | |
23860348 | 509 | something really big then do a sanity check. */ |
11cf8741 JM |
510 | |
511 | static void | |
512 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
513 | { | |
514 | int fixed_p = config->fixed_p; | |
515 | long size = config->size; | |
516 | if (args == NULL) | |
8a3fe4f8 | 517 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
518 | else if (strcmp (args, "hard") == 0 |
519 | || strcmp (args, "fixed") == 0) | |
520 | fixed_p = 1; | |
521 | else if (strcmp (args, "soft") == 0 | |
522 | || strcmp (args, "limit") == 0) | |
523 | fixed_p = 0; | |
524 | else | |
525 | { | |
526 | char *end; | |
527 | size = strtoul (args, &end, 0); | |
528 | if (args == end) | |
8a3fe4f8 | 529 | error (_("Invalid %s (bad syntax)."), config->name); |
11cf8741 JM |
530 | #if 0 |
531 | /* Instead of explicitly capping the size of a packet to | |
532 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
533 | instead allowed to set the size to something arbitrarily | |
23860348 | 534 | large. */ |
11cf8741 | 535 | if (size > MAX_REMOTE_PACKET_SIZE) |
8a3fe4f8 | 536 | error (_("Invalid %s (too large)."), config->name); |
11cf8741 JM |
537 | #endif |
538 | } | |
23860348 | 539 | /* Extra checks? */ |
11cf8741 JM |
540 | if (fixed_p && !config->fixed_p) |
541 | { | |
e2e0b3e5 AC |
542 | if (! query (_("The target may not be able to correctly handle a %s\n" |
543 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 544 | config->name, size)) |
8a3fe4f8 | 545 | error (_("Packet size not changed.")); |
11cf8741 | 546 | } |
23860348 | 547 | /* Update the config. */ |
11cf8741 JM |
548 | config->fixed_p = fixed_p; |
549 | config->size = size; | |
550 | } | |
551 | ||
552 | static void | |
553 | show_memory_packet_size (struct memory_packet_config *config) | |
554 | { | |
a3f17187 | 555 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 556 | if (config->fixed_p) |
a3f17187 | 557 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
558 | get_memory_packet_size (config)); |
559 | else | |
a3f17187 | 560 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
561 | get_memory_packet_size (config)); |
562 | } | |
563 | ||
564 | static struct memory_packet_config memory_write_packet_config = | |
565 | { | |
566 | "memory-write-packet-size", | |
567 | }; | |
568 | ||
569 | static void | |
570 | set_memory_write_packet_size (char *args, int from_tty) | |
571 | { | |
572 | set_memory_packet_size (args, &memory_write_packet_config); | |
573 | } | |
574 | ||
575 | static void | |
576 | show_memory_write_packet_size (char *args, int from_tty) | |
577 | { | |
578 | show_memory_packet_size (&memory_write_packet_config); | |
579 | } | |
580 | ||
581 | static long | |
582 | get_memory_write_packet_size (void) | |
583 | { | |
584 | return get_memory_packet_size (&memory_write_packet_config); | |
585 | } | |
586 | ||
587 | static struct memory_packet_config memory_read_packet_config = | |
588 | { | |
589 | "memory-read-packet-size", | |
590 | }; | |
591 | ||
592 | static void | |
593 | set_memory_read_packet_size (char *args, int from_tty) | |
594 | { | |
595 | set_memory_packet_size (args, &memory_read_packet_config); | |
596 | } | |
597 | ||
598 | static void | |
599 | show_memory_read_packet_size (char *args, int from_tty) | |
600 | { | |
601 | show_memory_packet_size (&memory_read_packet_config); | |
602 | } | |
603 | ||
604 | static long | |
605 | get_memory_read_packet_size (void) | |
606 | { | |
607 | long size = get_memory_packet_size (&memory_read_packet_config); | |
608 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an | |
609 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
610 | increased beyond this. */ |
611 | if (size > get_remote_packet_size ()) | |
612 | size = get_remote_packet_size (); | |
11cf8741 JM |
613 | return size; |
614 | } | |
615 | ||
11cf8741 | 616 | \f |
5a2468f5 JM |
617 | /* Generic configuration support for packets the stub optionally |
618 | supports. Allows the user to specify the use of the packet as well | |
23860348 | 619 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
620 | |
621 | enum packet_support | |
622 | { | |
623 | PACKET_SUPPORT_UNKNOWN = 0, | |
624 | PACKET_ENABLE, | |
625 | PACKET_DISABLE | |
626 | }; | |
627 | ||
5a2468f5 JM |
628 | struct packet_config |
629 | { | |
bb572ddd DJ |
630 | const char *name; |
631 | const char *title; | |
7f19b9a2 | 632 | enum auto_boolean detect; |
5a2468f5 JM |
633 | enum packet_support support; |
634 | }; | |
635 | ||
d471ea57 | 636 | /* Analyze a packet's return value and update the packet config |
23860348 | 637 | accordingly. */ |
d471ea57 AC |
638 | |
639 | enum packet_result | |
640 | { | |
641 | PACKET_ERROR, | |
642 | PACKET_OK, | |
643 | PACKET_UNKNOWN | |
644 | }; | |
645 | ||
5a2468f5 | 646 | static void |
d471ea57 | 647 | update_packet_config (struct packet_config *config) |
5a2468f5 | 648 | { |
d471ea57 AC |
649 | switch (config->detect) |
650 | { | |
7f19b9a2 | 651 | case AUTO_BOOLEAN_TRUE: |
d471ea57 AC |
652 | config->support = PACKET_ENABLE; |
653 | break; | |
7f19b9a2 | 654 | case AUTO_BOOLEAN_FALSE: |
d471ea57 AC |
655 | config->support = PACKET_DISABLE; |
656 | break; | |
7f19b9a2 | 657 | case AUTO_BOOLEAN_AUTO: |
d471ea57 AC |
658 | config->support = PACKET_SUPPORT_UNKNOWN; |
659 | break; | |
660 | } | |
5a2468f5 JM |
661 | } |
662 | ||
663 | static void | |
fba45db2 | 664 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
665 | { |
666 | char *support = "internal-error"; | |
667 | switch (config->support) | |
668 | { | |
669 | case PACKET_ENABLE: | |
670 | support = "enabled"; | |
671 | break; | |
672 | case PACKET_DISABLE: | |
673 | support = "disabled"; | |
674 | break; | |
675 | case PACKET_SUPPORT_UNKNOWN: | |
676 | support = "unknown"; | |
677 | break; | |
678 | } | |
679 | switch (config->detect) | |
680 | { | |
7f19b9a2 | 681 | case AUTO_BOOLEAN_AUTO: |
37a105a1 DJ |
682 | printf_filtered (_("Support for the `%s' packet is auto-detected, currently %s.\n"), |
683 | config->name, support); | |
5a2468f5 | 684 | break; |
7f19b9a2 AC |
685 | case AUTO_BOOLEAN_TRUE: |
686 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
687 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
688 | config->name, support); | |
8e248173 | 689 | break; |
5a2468f5 JM |
690 | } |
691 | } | |
692 | ||
693 | static void | |
bb572ddd DJ |
694 | add_packet_config_cmd (struct packet_config *config, const char *name, |
695 | const char *title, int legacy) | |
d471ea57 | 696 | { |
5a2468f5 JM |
697 | char *set_doc; |
698 | char *show_doc; | |
d471ea57 | 699 | char *cmd_name; |
3ed07be4 | 700 | |
5a2468f5 JM |
701 | config->name = name; |
702 | config->title = title; | |
7f19b9a2 | 703 | config->detect = AUTO_BOOLEAN_AUTO; |
8e248173 | 704 | config->support = PACKET_SUPPORT_UNKNOWN; |
b435e160 AC |
705 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
706 | name, title); | |
707 | show_doc = xstrprintf ("Show current use of remote protocol `%s' (%s) packet", | |
708 | name, title); | |
d471ea57 | 709 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 710 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 711 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
2c5b56ce | 712 | &config->detect, set_doc, show_doc, NULL, /* help_doc */ |
bb572ddd DJ |
713 | set_remote_protocol_packet_cmd, |
714 | show_remote_protocol_packet_cmd, | |
715 | &remote_set_cmdlist, &remote_show_cmdlist); | |
23860348 | 716 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
717 | if (legacy) |
718 | { | |
719 | char *legacy_name; | |
b435e160 | 720 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 721 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 722 | &remote_set_cmdlist); |
d471ea57 | 723 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 724 | &remote_show_cmdlist); |
d471ea57 | 725 | } |
5a2468f5 JM |
726 | } |
727 | ||
d471ea57 AC |
728 | static enum packet_result |
729 | packet_ok (const char *buf, struct packet_config *config) | |
5a2468f5 | 730 | { |
d471ea57 | 731 | if (buf[0] != '\0') |
5a2468f5 | 732 | { |
d471ea57 | 733 | /* The stub recognized the packet request. Check that the |
23860348 | 734 | operation succeeded. */ |
d471ea57 AC |
735 | switch (config->support) |
736 | { | |
737 | case PACKET_SUPPORT_UNKNOWN: | |
738 | if (remote_debug) | |
739 | fprintf_unfiltered (gdb_stdlog, | |
740 | "Packet %s (%s) is supported\n", | |
741 | config->name, config->title); | |
742 | config->support = PACKET_ENABLE; | |
743 | break; | |
744 | case PACKET_DISABLE: | |
8e65ff28 | 745 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 746 | _("packet_ok: attempt to use a disabled packet")); |
d471ea57 AC |
747 | break; |
748 | case PACKET_ENABLE: | |
749 | break; | |
750 | } | |
751 | if (buf[0] == 'O' && buf[1] == 'K' && buf[2] == '\0') | |
23860348 | 752 | /* "OK" - definitly OK. */ |
d471ea57 AC |
753 | return PACKET_OK; |
754 | if (buf[0] == 'E' | |
755 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
756 | && buf[3] == '\0') | |
23860348 | 757 | /* "Enn" - definitly an error. */ |
d471ea57 | 758 | return PACKET_ERROR; |
23860348 | 759 | /* The packet may or may not be OK. Just assume it is. */ |
d471ea57 AC |
760 | return PACKET_OK; |
761 | } | |
762 | else | |
763 | { | |
23860348 | 764 | /* The stub does not support the packet. */ |
d471ea57 AC |
765 | switch (config->support) |
766 | { | |
767 | case PACKET_ENABLE: | |
7f19b9a2 | 768 | if (config->detect == AUTO_BOOLEAN_AUTO) |
d471ea57 | 769 | /* If the stub previously indicated that the packet was |
23860348 | 770 | supported then there is a protocol error.. */ |
8a3fe4f8 | 771 | error (_("Protocol error: %s (%s) conflicting enabled responses."), |
d471ea57 AC |
772 | config->name, config->title); |
773 | else | |
23860348 | 774 | /* The user set it wrong. */ |
8a3fe4f8 | 775 | error (_("Enabled packet %s (%s) not recognized by stub"), |
d471ea57 AC |
776 | config->name, config->title); |
777 | break; | |
778 | case PACKET_SUPPORT_UNKNOWN: | |
779 | if (remote_debug) | |
780 | fprintf_unfiltered (gdb_stdlog, | |
781 | "Packet %s (%s) is NOT supported\n", | |
782 | config->name, config->title); | |
783 | config->support = PACKET_DISABLE; | |
784 | break; | |
785 | case PACKET_DISABLE: | |
786 | break; | |
787 | } | |
788 | return PACKET_UNKNOWN; | |
5a2468f5 JM |
789 | } |
790 | } | |
791 | ||
444abaca DJ |
792 | enum { |
793 | PACKET_vCont = 0, | |
794 | PACKET_X, | |
795 | PACKET_qSymbol, | |
796 | PACKET_P, | |
797 | PACKET_p, | |
798 | PACKET_Z0, | |
799 | PACKET_Z1, | |
800 | PACKET_Z2, | |
801 | PACKET_Z3, | |
802 | PACKET_Z4, | |
803 | PACKET_qPart_auxv, | |
804 | PACKET_qGetTLSAddr, | |
805 | PACKET_MAX | |
806 | }; | |
506fb367 | 807 | |
444abaca | 808 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 MS |
809 | |
810 | static void | |
444abaca DJ |
811 | set_remote_protocol_packet_cmd (char *args, int from_tty, |
812 | struct cmd_list_element *c) | |
dc8acb97 | 813 | { |
444abaca | 814 | struct packet_config *packet; |
dc8acb97 | 815 | |
444abaca DJ |
816 | for (packet = remote_protocol_packets; |
817 | packet < &remote_protocol_packets[PACKET_MAX]; | |
818 | packet++) | |
819 | { | |
820 | if (&packet->detect == c->var) | |
821 | { | |
822 | update_packet_config (packet); | |
823 | return; | |
824 | } | |
825 | } | |
826 | internal_error (__FILE__, __LINE__, "Could not find config for %s", | |
827 | c->name); | |
dc8acb97 MS |
828 | } |
829 | ||
5a2468f5 | 830 | static void |
444abaca DJ |
831 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
832 | struct cmd_list_element *c, | |
833 | const char *value) | |
5a2468f5 | 834 | { |
444abaca | 835 | struct packet_config *packet; |
5a2468f5 | 836 | |
444abaca DJ |
837 | for (packet = remote_protocol_packets; |
838 | packet < &remote_protocol_packets[PACKET_MAX]; | |
839 | packet++) | |
840 | { | |
841 | if (&packet->detect == c->var) | |
842 | { | |
843 | show_packet_config_cmd (packet); | |
844 | return; | |
845 | } | |
846 | } | |
847 | internal_error (__FILE__, __LINE__, "Could not find config for %s", | |
848 | c->name); | |
5a2468f5 JM |
849 | } |
850 | ||
d471ea57 AC |
851 | /* Should we try one of the 'Z' requests? */ |
852 | ||
853 | enum Z_packet_type | |
854 | { | |
855 | Z_PACKET_SOFTWARE_BP, | |
856 | Z_PACKET_HARDWARE_BP, | |
857 | Z_PACKET_WRITE_WP, | |
858 | Z_PACKET_READ_WP, | |
859 | Z_PACKET_ACCESS_WP, | |
860 | NR_Z_PACKET_TYPES | |
861 | }; | |
96baa820 | 862 | |
d471ea57 | 863 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 864 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 865 | |
7f19b9a2 | 866 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
867 | |
868 | static void | |
fba45db2 KB |
869 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
870 | struct cmd_list_element *c) | |
96baa820 | 871 | { |
d471ea57 AC |
872 | int i; |
873 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
874 | { | |
444abaca DJ |
875 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
876 | update_packet_config (&remote_protocol_packets[PACKET_Z0 + i]); | |
d471ea57 | 877 | } |
96baa820 JM |
878 | } |
879 | ||
880 | static void | |
08546159 AC |
881 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
882 | struct cmd_list_element *c, | |
883 | const char *value) | |
96baa820 | 884 | { |
d471ea57 AC |
885 | int i; |
886 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
887 | { | |
444abaca | 888 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 889 | } |
96baa820 JM |
890 | } |
891 | ||
9d1f7ab2 MS |
892 | /* Should we try the 'ThreadInfo' query packet? |
893 | ||
894 | This variable (NOT available to the user: auto-detect only!) | |
895 | determines whether GDB will use the new, simpler "ThreadInfo" | |
896 | query or the older, more complex syntax for thread queries. | |
802188a7 | 897 | This is an auto-detect variable (set to true at each connect, |
9d1f7ab2 MS |
898 | and set to false when the target fails to recognize it). */ |
899 | ||
900 | static int use_threadinfo_query; | |
901 | static int use_threadextra_query; | |
902 | ||
23860348 | 903 | /* Tokens for use by the asynchronous signal handlers for SIGINT. */ |
ae44c0c4 AC |
904 | static void *sigint_remote_twice_token; |
905 | static void *sigint_remote_token; | |
43ff13b4 | 906 | |
c906108c SS |
907 | /* These are pointers to hook functions that may be set in order to |
908 | modify resume/wait behavior for a particular architecture. */ | |
909 | ||
9a4105ab AC |
910 | void (*deprecated_target_resume_hook) (void); |
911 | void (*deprecated_target_wait_loop_hook) (void); | |
c906108c SS |
912 | \f |
913 | ||
c5aa993b | 914 | |
c906108c SS |
915 | /* These are the threads which we last sent to the remote system. |
916 | -1 for all or -2 for not sent yet. */ | |
917 | static int general_thread; | |
cce74817 | 918 | static int continue_thread; |
c906108c SS |
919 | |
920 | /* Call this function as a result of | |
921 | 1) A halt indication (T packet) containing a thread id | |
922 | 2) A direct query of currthread | |
923 | 3) Successful execution of set thread | |
924 | */ | |
925 | ||
926 | static void | |
fba45db2 | 927 | record_currthread (int currthread) |
c906108c | 928 | { |
c906108c | 929 | general_thread = currthread; |
cce74817 | 930 | |
c906108c SS |
931 | /* If this is a new thread, add it to GDB's thread list. |
932 | If we leave it up to WFI to do this, bad things will happen. */ | |
39f77062 | 933 | if (!in_thread_list (pid_to_ptid (currthread))) |
0f71a2f6 | 934 | { |
39f77062 | 935 | add_thread (pid_to_ptid (currthread)); |
8b93c638 | 936 | ui_out_text (uiout, "[New "); |
39f77062 | 937 | ui_out_text (uiout, target_pid_to_str (pid_to_ptid (currthread))); |
8b93c638 | 938 | ui_out_text (uiout, "]\n"); |
0f71a2f6 | 939 | } |
c906108c SS |
940 | } |
941 | ||
942 | #define MAGIC_NULL_PID 42000 | |
943 | ||
944 | static void | |
fba45db2 | 945 | set_thread (int th, int gen) |
c906108c | 946 | { |
d01949b6 | 947 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 948 | char *buf = rs->buf; |
cce74817 | 949 | int state = gen ? general_thread : continue_thread; |
c906108c SS |
950 | |
951 | if (state == th) | |
952 | return; | |
953 | ||
954 | buf[0] = 'H'; | |
955 | buf[1] = gen ? 'g' : 'c'; | |
956 | if (th == MAGIC_NULL_PID) | |
957 | { | |
958 | buf[2] = '0'; | |
959 | buf[3] = '\0'; | |
960 | } | |
961 | else if (th < 0) | |
ea9c271d | 962 | xsnprintf (&buf[2], get_remote_packet_size () - 2, "-%x", -th); |
c906108c | 963 | else |
ea9c271d | 964 | xsnprintf (&buf[2], get_remote_packet_size () - 2, "%x", th); |
c906108c | 965 | putpkt (buf); |
6d820c5c | 966 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 967 | if (gen) |
c5aa993b | 968 | general_thread = th; |
c906108c | 969 | else |
cce74817 | 970 | continue_thread = th; |
c906108c SS |
971 | } |
972 | \f | |
973 | /* Return nonzero if the thread TH is still alive on the remote system. */ | |
974 | ||
975 | static int | |
39f77062 | 976 | remote_thread_alive (ptid_t ptid) |
c906108c | 977 | { |
6d820c5c | 978 | struct remote_state *rs = get_remote_state (); |
39f77062 | 979 | int tid = PIDGET (ptid); |
6d820c5c | 980 | char *buf = rs->buf; |
c906108c | 981 | |
cce74817 | 982 | if (tid < 0) |
ea9c271d | 983 | xsnprintf (buf, get_remote_packet_size (), "T-%08x", -tid); |
c906108c | 984 | else |
ea9c271d | 985 | xsnprintf (buf, get_remote_packet_size (), "T%08x", tid); |
c906108c | 986 | putpkt (buf); |
6d820c5c | 987 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c SS |
988 | return (buf[0] == 'O' && buf[1] == 'K'); |
989 | } | |
990 | ||
991 | /* About these extended threadlist and threadinfo packets. They are | |
992 | variable length packets but, the fields within them are often fixed | |
993 | length. They are redundent enough to send over UDP as is the | |
994 | remote protocol in general. There is a matching unit test module | |
995 | in libstub. */ | |
996 | ||
cce74817 JM |
997 | #define OPAQUETHREADBYTES 8 |
998 | ||
999 | /* a 64 bit opaque identifier */ | |
1000 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
1001 | ||
23860348 MS |
1002 | /* WARNING: This threadref data structure comes from the remote O.S., |
1003 | libstub protocol encoding, and remote.c. it is not particularly | |
1004 | changable. */ | |
cce74817 JM |
1005 | |
1006 | /* Right now, the internal structure is int. We want it to be bigger. | |
1007 | Plan to fix this. | |
c5aa993b | 1008 | */ |
cce74817 | 1009 | |
23860348 | 1010 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 1011 | |
9d1f7ab2 | 1012 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 1013 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
1014 | |
1015 | struct gdb_ext_thread_info | |
c5aa993b | 1016 | { |
23860348 MS |
1017 | threadref threadid; /* External form of thread reference. */ |
1018 | int active; /* Has state interesting to GDB? | |
1019 | regs, stack. */ | |
1020 | char display[256]; /* Brief state display, name, | |
cedea757 | 1021 | blocked/suspended. */ |
23860348 MS |
1022 | char shortname[32]; /* To be used to name threads. */ |
1023 | char more_display[256]; /* Long info, statistics, queue depth, | |
1024 | whatever. */ | |
c5aa993b | 1025 | }; |
cce74817 JM |
1026 | |
1027 | /* The volume of remote transfers can be limited by submitting | |
1028 | a mask containing bits specifying the desired information. | |
1029 | Use a union of these values as the 'selection' parameter to | |
1030 | get_thread_info. FIXME: Make these TAG names more thread specific. | |
c5aa993b | 1031 | */ |
cce74817 JM |
1032 | |
1033 | #define TAG_THREADID 1 | |
1034 | #define TAG_EXISTS 2 | |
1035 | #define TAG_DISPLAY 4 | |
1036 | #define TAG_THREADNAME 8 | |
c5aa993b | 1037 | #define TAG_MOREDISPLAY 16 |
cce74817 | 1038 | |
23860348 | 1039 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 1040 | |
b2dd6311 | 1041 | char *unpack_varlen_hex (char *buff, ULONGEST *result); |
cce74817 | 1042 | |
a14ed312 | 1043 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 1044 | |
a14ed312 | 1045 | static char *pack_nibble (char *buf, int nibble); |
cce74817 | 1046 | |
23860348 | 1047 | static char *pack_hex_byte (char *pkt, int /* unsigned char */ byte); |
cce74817 | 1048 | |
a14ed312 | 1049 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 1050 | |
a14ed312 | 1051 | static char *pack_int (char *buf, int value); |
cce74817 | 1052 | |
a14ed312 | 1053 | static char *unpack_int (char *buf, int *value); |
cce74817 | 1054 | |
a14ed312 | 1055 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 1056 | |
23860348 | 1057 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 1058 | |
23860348 | 1059 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 1060 | |
23860348 | 1061 | void int_to_threadref (threadref *id, int value); |
cce74817 | 1062 | |
23860348 | 1063 | static int threadref_to_int (threadref *ref); |
cce74817 | 1064 | |
23860348 | 1065 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 1066 | |
23860348 | 1067 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 1068 | |
23860348 MS |
1069 | static char *pack_threadinfo_request (char *pkt, int mode, |
1070 | threadref *id); | |
cce74817 | 1071 | |
a14ed312 | 1072 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 1073 | threadref *expectedref, |
a14ed312 KB |
1074 | struct gdb_ext_thread_info |
1075 | *info); | |
cce74817 JM |
1076 | |
1077 | ||
23860348 MS |
1078 | static int remote_get_threadinfo (threadref *threadid, |
1079 | int fieldset, /*TAG mask */ | |
a14ed312 | 1080 | struct gdb_ext_thread_info *info); |
cce74817 | 1081 | |
a14ed312 KB |
1082 | static char *pack_threadlist_request (char *pkt, int startflag, |
1083 | int threadcount, | |
23860348 | 1084 | threadref *nextthread); |
cce74817 | 1085 | |
a14ed312 KB |
1086 | static int parse_threadlist_response (char *pkt, |
1087 | int result_limit, | |
23860348 MS |
1088 | threadref *original_echo, |
1089 | threadref *resultlist, | |
1090 | int *doneflag); | |
cce74817 | 1091 | |
a14ed312 | 1092 | static int remote_get_threadlist (int startflag, |
23860348 | 1093 | threadref *nextthread, |
a14ed312 KB |
1094 | int result_limit, |
1095 | int *done, | |
23860348 MS |
1096 | int *result_count, |
1097 | threadref *threadlist); | |
cce74817 | 1098 | |
23860348 | 1099 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 1100 | |
a14ed312 KB |
1101 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
1102 | void *context, int looplimit); | |
cce74817 | 1103 | |
23860348 | 1104 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 1105 | |
23860348 | 1106 | /* Encode 64 bits in 16 chars of hex. */ |
c906108c SS |
1107 | |
1108 | static const char hexchars[] = "0123456789abcdef"; | |
1109 | ||
1110 | static int | |
fba45db2 | 1111 | ishex (int ch, int *val) |
c906108c SS |
1112 | { |
1113 | if ((ch >= 'a') && (ch <= 'f')) | |
1114 | { | |
1115 | *val = ch - 'a' + 10; | |
1116 | return 1; | |
1117 | } | |
1118 | if ((ch >= 'A') && (ch <= 'F')) | |
1119 | { | |
1120 | *val = ch - 'A' + 10; | |
1121 | return 1; | |
1122 | } | |
1123 | if ((ch >= '0') && (ch <= '9')) | |
1124 | { | |
1125 | *val = ch - '0'; | |
1126 | return 1; | |
1127 | } | |
1128 | return 0; | |
1129 | } | |
1130 | ||
1131 | static int | |
fba45db2 | 1132 | stubhex (int ch) |
c906108c SS |
1133 | { |
1134 | if (ch >= 'a' && ch <= 'f') | |
1135 | return ch - 'a' + 10; | |
1136 | if (ch >= '0' && ch <= '9') | |
1137 | return ch - '0'; | |
1138 | if (ch >= 'A' && ch <= 'F') | |
1139 | return ch - 'A' + 10; | |
1140 | return -1; | |
1141 | } | |
1142 | ||
1143 | static int | |
fba45db2 | 1144 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
1145 | { |
1146 | int nibble; | |
1147 | int retval = 0; | |
1148 | ||
1149 | while (fieldlength) | |
1150 | { | |
1151 | nibble = stubhex (*buff++); | |
1152 | retval |= nibble; | |
1153 | fieldlength--; | |
1154 | if (fieldlength) | |
1155 | retval = retval << 4; | |
1156 | } | |
1157 | return retval; | |
1158 | } | |
1159 | ||
1160 | char * | |
fba45db2 | 1161 | unpack_varlen_hex (char *buff, /* packet to parse */ |
b2dd6311 | 1162 | ULONGEST *result) |
c906108c SS |
1163 | { |
1164 | int nibble; | |
1165 | int retval = 0; | |
1166 | ||
1167 | while (ishex (*buff, &nibble)) | |
1168 | { | |
1169 | buff++; | |
1170 | retval = retval << 4; | |
1171 | retval |= nibble & 0x0f; | |
1172 | } | |
1173 | *result = retval; | |
1174 | return buff; | |
1175 | } | |
1176 | ||
1177 | static char * | |
fba45db2 | 1178 | unpack_nibble (char *buf, int *val) |
c906108c SS |
1179 | { |
1180 | ishex (*buf++, val); | |
1181 | return buf; | |
1182 | } | |
1183 | ||
1184 | static char * | |
fba45db2 | 1185 | pack_nibble (char *buf, int nibble) |
c906108c SS |
1186 | { |
1187 | *buf++ = hexchars[(nibble & 0x0f)]; | |
1188 | return buf; | |
1189 | } | |
1190 | ||
1191 | static char * | |
fba45db2 | 1192 | pack_hex_byte (char *pkt, int byte) |
c906108c SS |
1193 | { |
1194 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
1195 | *pkt++ = hexchars[(byte & 0xf)]; | |
1196 | return pkt; | |
1197 | } | |
1198 | ||
1199 | static char * | |
fba45db2 | 1200 | unpack_byte (char *buf, int *value) |
c906108c SS |
1201 | { |
1202 | *value = stub_unpack_int (buf, 2); | |
1203 | return buf + 2; | |
1204 | } | |
1205 | ||
1206 | static char * | |
fba45db2 | 1207 | pack_int (char *buf, int value) |
c906108c SS |
1208 | { |
1209 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
1210 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
1211 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
1212 | buf = pack_hex_byte (buf, (value & 0xff)); | |
1213 | return buf; | |
1214 | } | |
1215 | ||
1216 | static char * | |
fba45db2 | 1217 | unpack_int (char *buf, int *value) |
c906108c SS |
1218 | { |
1219 | *value = stub_unpack_int (buf, 8); | |
1220 | return buf + 8; | |
1221 | } | |
1222 | ||
23860348 | 1223 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 1224 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
1225 | |
1226 | static char * | |
fba45db2 | 1227 | pack_string (char *pkt, char *string) |
c906108c SS |
1228 | { |
1229 | char ch; | |
1230 | int len; | |
1231 | ||
1232 | len = strlen (string); | |
1233 | if (len > 200) | |
23860348 | 1234 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
1235 | pkt = pack_hex_byte (pkt, len); |
1236 | while (len-- > 0) | |
1237 | { | |
1238 | ch = *string++; | |
1239 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 1240 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
1241 | *pkt++ = ch; |
1242 | } | |
1243 | return pkt; | |
1244 | } | |
1245 | #endif /* 0 (unused) */ | |
1246 | ||
1247 | static char * | |
fba45db2 | 1248 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
1249 | { |
1250 | while (length--) | |
1251 | *dest++ = *src++; | |
1252 | *dest = '\0'; | |
1253 | return src; | |
1254 | } | |
1255 | ||
1256 | static char * | |
fba45db2 | 1257 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
1258 | { |
1259 | char *limit; | |
1260 | unsigned char *altid; | |
1261 | ||
1262 | altid = (unsigned char *) id; | |
1263 | limit = pkt + BUF_THREAD_ID_SIZE; | |
1264 | while (pkt < limit) | |
1265 | pkt = pack_hex_byte (pkt, *altid++); | |
1266 | return pkt; | |
1267 | } | |
1268 | ||
1269 | ||
1270 | static char * | |
fba45db2 | 1271 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
1272 | { |
1273 | char *altref; | |
1274 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
1275 | int x, y; | |
1276 | ||
1277 | altref = (char *) id; | |
1278 | ||
1279 | while (inbuf < limit) | |
1280 | { | |
1281 | x = stubhex (*inbuf++); | |
1282 | y = stubhex (*inbuf++); | |
1283 | *altref++ = (x << 4) | y; | |
1284 | } | |
1285 | return inbuf; | |
1286 | } | |
1287 | ||
1288 | /* Externally, threadrefs are 64 bits but internally, they are still | |
1289 | ints. This is due to a mismatch of specifications. We would like | |
1290 | to use 64bit thread references internally. This is an adapter | |
1291 | function. */ | |
1292 | ||
1293 | void | |
fba45db2 | 1294 | int_to_threadref (threadref *id, int value) |
c906108c SS |
1295 | { |
1296 | unsigned char *scan; | |
1297 | ||
1298 | scan = (unsigned char *) id; | |
1299 | { | |
1300 | int i = 4; | |
1301 | while (i--) | |
1302 | *scan++ = 0; | |
1303 | } | |
1304 | *scan++ = (value >> 24) & 0xff; | |
1305 | *scan++ = (value >> 16) & 0xff; | |
1306 | *scan++ = (value >> 8) & 0xff; | |
1307 | *scan++ = (value & 0xff); | |
1308 | } | |
1309 | ||
1310 | static int | |
fba45db2 | 1311 | threadref_to_int (threadref *ref) |
c906108c SS |
1312 | { |
1313 | int i, value = 0; | |
1314 | unsigned char *scan; | |
1315 | ||
cfd77fa1 | 1316 | scan = *ref; |
c906108c SS |
1317 | scan += 4; |
1318 | i = 4; | |
1319 | while (i-- > 0) | |
1320 | value = (value << 8) | ((*scan++) & 0xff); | |
1321 | return value; | |
1322 | } | |
1323 | ||
1324 | static void | |
fba45db2 | 1325 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
1326 | { |
1327 | int i; | |
1328 | unsigned char *csrc, *cdest; | |
1329 | ||
1330 | csrc = (unsigned char *) src; | |
1331 | cdest = (unsigned char *) dest; | |
1332 | i = 8; | |
1333 | while (i--) | |
1334 | *cdest++ = *csrc++; | |
1335 | } | |
1336 | ||
1337 | static int | |
fba45db2 | 1338 | threadmatch (threadref *dest, threadref *src) |
c906108c | 1339 | { |
23860348 | 1340 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
1341 | #if 0 |
1342 | unsigned char *srcp, *destp; | |
1343 | int i, result; | |
1344 | srcp = (char *) src; | |
1345 | destp = (char *) dest; | |
1346 | ||
1347 | result = 1; | |
1348 | while (i-- > 0) | |
1349 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
1350 | return result; | |
1351 | #endif | |
1352 | return 1; | |
1353 | } | |
1354 | ||
1355 | /* | |
c5aa993b JM |
1356 | threadid:1, # always request threadid |
1357 | context_exists:2, | |
1358 | display:4, | |
1359 | unique_name:8, | |
1360 | more_display:16 | |
1361 | */ | |
c906108c SS |
1362 | |
1363 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
1364 | ||
1365 | static char * | |
fba45db2 | 1366 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 1367 | { |
23860348 MS |
1368 | *pkt++ = 'q'; /* Info Query */ |
1369 | *pkt++ = 'P'; /* process or thread info */ | |
1370 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 1371 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 1372 | *pkt = '\0'; /* terminate */ |
c906108c SS |
1373 | return pkt; |
1374 | } | |
1375 | ||
23860348 | 1376 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 1377 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 1378 | add more fields as time goes by. */ |
c906108c | 1379 | |
23860348 | 1380 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 1381 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 1382 | fetch registers and its stack? */ |
c5aa993b | 1383 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 1384 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 1385 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 1386 | the process. */ |
c906108c SS |
1387 | |
1388 | static int | |
fba45db2 KB |
1389 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
1390 | struct gdb_ext_thread_info *info) | |
c906108c | 1391 | { |
d01949b6 | 1392 | struct remote_state *rs = get_remote_state (); |
c906108c | 1393 | int mask, length; |
cfd77fa1 | 1394 | int tag; |
c906108c | 1395 | threadref ref; |
6d820c5c | 1396 | char *limit = pkt + rs->buf_size; /* Plausible parsing limit. */ |
c906108c SS |
1397 | int retval = 1; |
1398 | ||
23860348 | 1399 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
1400 | info->active = 0; |
1401 | info->display[0] = '\0'; | |
1402 | info->shortname[0] = '\0'; | |
1403 | info->more_display[0] = '\0'; | |
1404 | ||
23860348 MS |
1405 | /* Assume the characters indicating the packet type have been |
1406 | stripped. */ | |
c906108c SS |
1407 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
1408 | pkt = unpack_threadid (pkt, &ref); | |
1409 | ||
1410 | if (mask == 0) | |
8a3fe4f8 | 1411 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 1412 | if (!threadmatch (&ref, expectedref)) |
23860348 | 1413 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 1414 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
1415 | return 0; |
1416 | } | |
1417 | copy_threadref (&info->threadid, &ref); | |
1418 | ||
23860348 | 1419 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 1420 | |
23860348 MS |
1421 | /* Packets are terminated with nulls. */ |
1422 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
1423 | { |
1424 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
1425 | pkt = unpack_byte (pkt, &length); /* length */ |
1426 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 1427 | { |
8a3fe4f8 | 1428 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
1429 | retval = 0; |
1430 | break; | |
1431 | } | |
1432 | if (tag == TAG_THREADID) | |
1433 | { | |
1434 | if (length != 16) | |
1435 | { | |
8a3fe4f8 | 1436 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
1437 | retval = 0; |
1438 | break; | |
1439 | } | |
1440 | pkt = unpack_threadid (pkt, &ref); | |
1441 | mask = mask & ~TAG_THREADID; | |
1442 | continue; | |
1443 | } | |
1444 | if (tag == TAG_EXISTS) | |
1445 | { | |
1446 | info->active = stub_unpack_int (pkt, length); | |
1447 | pkt += length; | |
1448 | mask = mask & ~(TAG_EXISTS); | |
1449 | if (length > 8) | |
1450 | { | |
8a3fe4f8 | 1451 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
1452 | retval = 0; |
1453 | break; | |
1454 | } | |
1455 | continue; | |
1456 | } | |
1457 | if (tag == TAG_THREADNAME) | |
1458 | { | |
1459 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
1460 | mask = mask & ~TAG_THREADNAME; | |
1461 | continue; | |
1462 | } | |
1463 | if (tag == TAG_DISPLAY) | |
1464 | { | |
1465 | pkt = unpack_string (pkt, &info->display[0], length); | |
1466 | mask = mask & ~TAG_DISPLAY; | |
1467 | continue; | |
1468 | } | |
1469 | if (tag == TAG_MOREDISPLAY) | |
1470 | { | |
1471 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
1472 | mask = mask & ~TAG_MOREDISPLAY; | |
1473 | continue; | |
1474 | } | |
8a3fe4f8 | 1475 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 1476 | break; /* Not a tag we know about. */ |
c906108c SS |
1477 | } |
1478 | return retval; | |
1479 | } | |
1480 | ||
1481 | static int | |
fba45db2 KB |
1482 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
1483 | struct gdb_ext_thread_info *info) | |
c906108c | 1484 | { |
d01949b6 | 1485 | struct remote_state *rs = get_remote_state (); |
c906108c | 1486 | int result; |
6d820c5c | 1487 | char *threadinfo_pkt = rs->buf; |
c906108c SS |
1488 | |
1489 | pack_threadinfo_request (threadinfo_pkt, fieldset, threadid); | |
1490 | putpkt (threadinfo_pkt); | |
6d820c5c | 1491 | getpkt (&rs->buf, &rs->buf_size, 0); |
23860348 MS |
1492 | result = remote_unpack_thread_info_response (threadinfo_pkt + 2, |
1493 | threadid, info); | |
c906108c SS |
1494 | return result; |
1495 | } | |
1496 | ||
c906108c SS |
1497 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
1498 | ||
1499 | static char * | |
fba45db2 KB |
1500 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
1501 | threadref *nextthread) | |
c906108c SS |
1502 | { |
1503 | *pkt++ = 'q'; /* info query packet */ | |
1504 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 1505 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
1506 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
1507 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
1508 | *pkt = '\0'; | |
1509 | return pkt; | |
1510 | } | |
1511 | ||
1512 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
1513 | ||
1514 | static int | |
fba45db2 KB |
1515 | parse_threadlist_response (char *pkt, int result_limit, |
1516 | threadref *original_echo, threadref *resultlist, | |
1517 | int *doneflag) | |
c906108c | 1518 | { |
d01949b6 | 1519 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1520 | char *limit; |
1521 | int count, resultcount, done; | |
1522 | ||
1523 | resultcount = 0; | |
1524 | /* Assume the 'q' and 'M chars have been stripped. */ | |
6d820c5c | 1525 | limit = pkt + (rs->buf_size - BUF_THREAD_ID_SIZE); |
23860348 | 1526 | /* done parse past here */ |
c906108c SS |
1527 | pkt = unpack_byte (pkt, &count); /* count field */ |
1528 | pkt = unpack_nibble (pkt, &done); | |
1529 | /* The first threadid is the argument threadid. */ | |
1530 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
1531 | while ((count-- > 0) && (pkt < limit)) | |
1532 | { | |
1533 | pkt = unpack_threadid (pkt, resultlist++); | |
1534 | if (resultcount++ >= result_limit) | |
1535 | break; | |
1536 | } | |
1537 | if (doneflag) | |
1538 | *doneflag = done; | |
1539 | return resultcount; | |
1540 | } | |
1541 | ||
1542 | static int | |
fba45db2 KB |
1543 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
1544 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 1545 | { |
d01949b6 | 1546 | struct remote_state *rs = get_remote_state (); |
c906108c | 1547 | static threadref echo_nextthread; |
6d820c5c | 1548 | char *threadlist_packet = rs->buf; |
c906108c SS |
1549 | int result = 1; |
1550 | ||
23860348 | 1551 | /* Trancate result limit to be smaller than the packet size. */ |
ea9c271d DJ |
1552 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) >= get_remote_packet_size ()) |
1553 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; | |
c906108c | 1554 | |
6d820c5c DJ |
1555 | pack_threadlist_request (rs->buf, startflag, result_limit, nextthread); |
1556 | putpkt (rs->buf); | |
1557 | getpkt (&rs->buf, &rs->buf_size, 0); | |
c906108c SS |
1558 | |
1559 | *result_count = | |
6d820c5c | 1560 | parse_threadlist_response (rs->buf + 2, result_limit, &echo_nextthread, |
c906108c SS |
1561 | threadlist, done); |
1562 | ||
1563 | if (!threadmatch (&echo_nextthread, nextthread)) | |
1564 | { | |
23860348 MS |
1565 | /* FIXME: This is a good reason to drop the packet. */ |
1566 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
1567 | /* Possabilities : |
1568 | retransmit immediatly - race conditions | |
1569 | retransmit after timeout - yes | |
1570 | exit | |
1571 | wait for packet, then exit | |
1572 | */ | |
8a3fe4f8 | 1573 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 1574 | return 0; /* I choose simply exiting. */ |
c906108c SS |
1575 | } |
1576 | if (*result_count <= 0) | |
1577 | { | |
1578 | if (*done != 1) | |
1579 | { | |
8a3fe4f8 | 1580 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
1581 | result = 0; |
1582 | } | |
1583 | return result; /* break; */ | |
1584 | } | |
1585 | if (*result_count > result_limit) | |
1586 | { | |
1587 | *result_count = 0; | |
8a3fe4f8 | 1588 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
1589 | return 0; |
1590 | } | |
1591 | return result; | |
1592 | } | |
1593 | ||
23860348 MS |
1594 | /* This is the interface between remote and threads, remotes upper |
1595 | interface. */ | |
c906108c SS |
1596 | |
1597 | /* remote_find_new_threads retrieves the thread list and for each | |
1598 | thread in the list, looks up the thread in GDB's internal list, | |
1599 | ading the thread if it does not already exist. This involves | |
1600 | getting partial thread lists from the remote target so, polling the | |
1601 | quit_flag is required. */ | |
1602 | ||
1603 | ||
23860348 | 1604 | /* About this many threadisds fit in a packet. */ |
c906108c SS |
1605 | |
1606 | #define MAXTHREADLISTRESULTS 32 | |
1607 | ||
1608 | static int | |
fba45db2 KB |
1609 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
1610 | int looplimit) | |
c906108c SS |
1611 | { |
1612 | int done, i, result_count; | |
1613 | int startflag = 1; | |
1614 | int result = 1; | |
1615 | int loopcount = 0; | |
1616 | static threadref nextthread; | |
1617 | static threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
1618 | ||
1619 | done = 0; | |
1620 | while (!done) | |
1621 | { | |
1622 | if (loopcount++ > looplimit) | |
1623 | { | |
1624 | result = 0; | |
8a3fe4f8 | 1625 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
1626 | break; |
1627 | } | |
1628 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS, | |
1629 | &done, &result_count, resultthreadlist)) | |
1630 | { | |
1631 | result = 0; | |
1632 | break; | |
1633 | } | |
23860348 | 1634 | /* Clear for later iterations. */ |
c906108c SS |
1635 | startflag = 0; |
1636 | /* Setup to resume next batch of thread references, set nextthread. */ | |
1637 | if (result_count >= 1) | |
1638 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |
1639 | i = 0; | |
1640 | while (result_count--) | |
1641 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |
1642 | break; | |
1643 | } | |
1644 | return result; | |
1645 | } | |
1646 | ||
1647 | static int | |
fba45db2 | 1648 | remote_newthread_step (threadref *ref, void *context) |
c906108c | 1649 | { |
39f77062 | 1650 | ptid_t ptid; |
c906108c | 1651 | |
39f77062 KB |
1652 | ptid = pid_to_ptid (threadref_to_int (ref)); |
1653 | ||
1654 | if (!in_thread_list (ptid)) | |
1655 | add_thread (ptid); | |
c906108c SS |
1656 | return 1; /* continue iterator */ |
1657 | } | |
1658 | ||
1659 | #define CRAZY_MAX_THREADS 1000 | |
1660 | ||
39f77062 KB |
1661 | static ptid_t |
1662 | remote_current_thread (ptid_t oldpid) | |
c906108c | 1663 | { |
d01949b6 | 1664 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 1665 | char *buf = rs->buf; |
c906108c SS |
1666 | |
1667 | putpkt ("qC"); | |
6d820c5c | 1668 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 1669 | if (buf[0] == 'Q' && buf[1] == 'C') |
c273b20f JB |
1670 | /* Use strtoul here, so we'll correctly parse values whose highest |
1671 | bit is set. The protocol carries them as a simple series of | |
1672 | hex digits; in the absence of a sign, strtol will see such | |
1673 | values as positive numbers out of range for signed 'long', and | |
1674 | return LONG_MAX to indicate an overflow. */ | |
1675 | return pid_to_ptid (strtoul (&buf[2], NULL, 16)); | |
c906108c SS |
1676 | else |
1677 | return oldpid; | |
1678 | } | |
1679 | ||
802188a7 RM |
1680 | /* Find new threads for info threads command. |
1681 | * Original version, using John Metzler's thread protocol. | |
9d1f7ab2 | 1682 | */ |
cce74817 JM |
1683 | |
1684 | static void | |
fba45db2 | 1685 | remote_find_new_threads (void) |
c906108c | 1686 | { |
c5aa993b JM |
1687 | remote_threadlist_iterator (remote_newthread_step, 0, |
1688 | CRAZY_MAX_THREADS); | |
39f77062 KB |
1689 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) /* ack ack ack */ |
1690 | inferior_ptid = remote_current_thread (inferior_ptid); | |
c906108c SS |
1691 | } |
1692 | ||
9d1f7ab2 MS |
1693 | /* |
1694 | * Find all threads for info threads command. | |
1695 | * Uses new thread protocol contributed by Cisco. | |
1696 | * Falls back and attempts to use the older method (above) | |
1697 | * if the target doesn't respond to the new method. | |
1698 | */ | |
1699 | ||
0f71a2f6 JM |
1700 | static void |
1701 | remote_threads_info (void) | |
1702 | { | |
d01949b6 | 1703 | struct remote_state *rs = get_remote_state (); |
085dd6e6 | 1704 | char *bufp; |
0f71a2f6 JM |
1705 | int tid; |
1706 | ||
1707 | if (remote_desc == 0) /* paranoia */ | |
8a3fe4f8 | 1708 | error (_("Command can only be used when connected to the remote target.")); |
0f71a2f6 | 1709 | |
9d1f7ab2 MS |
1710 | if (use_threadinfo_query) |
1711 | { | |
1712 | putpkt ("qfThreadInfo"); | |
6d820c5c DJ |
1713 | bufp = rs->buf; |
1714 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9d1f7ab2 | 1715 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 1716 | { |
9d1f7ab2 MS |
1717 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
1718 | { | |
1719 | do | |
1720 | { | |
c273b20f JB |
1721 | /* Use strtoul here, so we'll correctly parse values |
1722 | whose highest bit is set. The protocol carries | |
1723 | them as a simple series of hex digits; in the | |
1724 | absence of a sign, strtol will see such values as | |
1725 | positive numbers out of range for signed 'long', | |
1726 | and return LONG_MAX to indicate an overflow. */ | |
1727 | tid = strtoul (bufp, &bufp, 16); | |
39f77062 KB |
1728 | if (tid != 0 && !in_thread_list (pid_to_ptid (tid))) |
1729 | add_thread (pid_to_ptid (tid)); | |
9d1f7ab2 MS |
1730 | } |
1731 | while (*bufp++ == ','); /* comma-separated list */ | |
1732 | putpkt ("qsThreadInfo"); | |
6d820c5c DJ |
1733 | bufp = rs->buf; |
1734 | getpkt (&rs->buf, &rs->buf_size, 0); | |
9d1f7ab2 MS |
1735 | } |
1736 | return; /* done */ | |
1737 | } | |
1738 | } | |
1739 | ||
23860348 | 1740 | /* Else fall back to old method based on jmetzler protocol. */ |
9d1f7ab2 MS |
1741 | use_threadinfo_query = 0; |
1742 | remote_find_new_threads (); | |
1743 | return; | |
1744 | } | |
1745 | ||
802188a7 | 1746 | /* |
9d1f7ab2 MS |
1747 | * Collect a descriptive string about the given thread. |
1748 | * The target may say anything it wants to about the thread | |
1749 | * (typically info about its blocked / runnable state, name, etc.). | |
1750 | * This string will appear in the info threads display. | |
802188a7 | 1751 | * |
9d1f7ab2 MS |
1752 | * Optional: targets are not required to implement this function. |
1753 | */ | |
1754 | ||
1755 | static char * | |
1756 | remote_threads_extra_info (struct thread_info *tp) | |
1757 | { | |
d01949b6 | 1758 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
1759 | int result; |
1760 | int set; | |
1761 | threadref id; | |
1762 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 1763 | static char display_buf[100]; /* arbitrary... */ |
9d1f7ab2 MS |
1764 | int n = 0; /* position in display_buf */ |
1765 | ||
1766 | if (remote_desc == 0) /* paranoia */ | |
8e65ff28 | 1767 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 1768 | _("remote_threads_extra_info")); |
9d1f7ab2 MS |
1769 | |
1770 | if (use_threadextra_query) | |
1771 | { | |
6d820c5c DJ |
1772 | char *bufp = rs->buf; |
1773 | ||
ea9c271d | 1774 | xsnprintf (bufp, get_remote_packet_size (), "qThreadExtraInfo,%x", |
ecbc58df | 1775 | PIDGET (tp->ptid)); |
9d1f7ab2 | 1776 | putpkt (bufp); |
6d820c5c | 1777 | getpkt (&rs->buf, &rs->buf_size, 0); |
9d1f7ab2 MS |
1778 | if (bufp[0] != 0) |
1779 | { | |
30559e10 | 1780 | n = min (strlen (bufp) / 2, sizeof (display_buf)); |
cfd77fa1 | 1781 | result = hex2bin (bufp, (gdb_byte *) display_buf, n); |
30559e10 | 1782 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
1783 | return display_buf; |
1784 | } | |
0f71a2f6 | 1785 | } |
9d1f7ab2 MS |
1786 | |
1787 | /* If the above query fails, fall back to the old method. */ | |
1788 | use_threadextra_query = 0; | |
1789 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
1790 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
39f77062 | 1791 | int_to_threadref (&id, PIDGET (tp->ptid)); |
9d1f7ab2 MS |
1792 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
1793 | if (threadinfo.active) | |
0f71a2f6 | 1794 | { |
9d1f7ab2 | 1795 | if (*threadinfo.shortname) |
ecbc58df WZ |
1796 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
1797 | " Name: %s,", threadinfo.shortname); | |
9d1f7ab2 | 1798 | if (*threadinfo.display) |
ecbc58df WZ |
1799 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
1800 | " State: %s,", threadinfo.display); | |
9d1f7ab2 | 1801 | if (*threadinfo.more_display) |
ecbc58df WZ |
1802 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
1803 | " Priority: %s", threadinfo.more_display); | |
9d1f7ab2 MS |
1804 | |
1805 | if (n > 0) | |
c5aa993b | 1806 | { |
23860348 | 1807 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
1808 | if (',' == display_buf[n-1]) |
1809 | display_buf[n-1] = ' '; | |
1810 | return display_buf; | |
c5aa993b | 1811 | } |
0f71a2f6 | 1812 | } |
9d1f7ab2 | 1813 | return NULL; |
0f71a2f6 | 1814 | } |
c906108c | 1815 | \f |
c5aa993b | 1816 | |
24b06219 | 1817 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
1818 | |
1819 | static void | |
fba45db2 | 1820 | extended_remote_restart (void) |
c906108c | 1821 | { |
d01949b6 | 1822 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1823 | |
1824 | /* Send the restart command; for reasons I don't understand the | |
1825 | remote side really expects a number after the "R". */ | |
ea9c271d | 1826 | xsnprintf (rs->buf, get_remote_packet_size (), "R%x", 0); |
6d820c5c | 1827 | putpkt (rs->buf); |
c906108c | 1828 | |
ad9a8f3f NS |
1829 | remote_fileio_reset (); |
1830 | ||
c906108c SS |
1831 | /* Now query for status so this looks just like we restarted |
1832 | gdbserver from scratch. */ | |
1833 | putpkt ("?"); | |
01d3a6ce | 1834 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c SS |
1835 | } |
1836 | \f | |
1837 | /* Clean up connection to a remote debugger. */ | |
1838 | ||
c906108c | 1839 | static void |
fba45db2 | 1840 | remote_close (int quitting) |
c906108c SS |
1841 | { |
1842 | if (remote_desc) | |
2cd58942 | 1843 | serial_close (remote_desc); |
c906108c SS |
1844 | remote_desc = NULL; |
1845 | } | |
1846 | ||
23860348 | 1847 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
1848 | |
1849 | static void | |
fba45db2 | 1850 | get_offsets (void) |
c906108c | 1851 | { |
d01949b6 | 1852 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 1853 | char *buf = rs->buf; |
085dd6e6 | 1854 | char *ptr; |
c906108c SS |
1855 | int lose; |
1856 | CORE_ADDR text_addr, data_addr, bss_addr; | |
1857 | struct section_offsets *offs; | |
1858 | ||
1859 | putpkt ("qOffsets"); | |
6d820c5c | 1860 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c SS |
1861 | |
1862 | if (buf[0] == '\000') | |
1863 | return; /* Return silently. Stub doesn't support | |
23860348 | 1864 | this command. */ |
c906108c SS |
1865 | if (buf[0] == 'E') |
1866 | { | |
8a3fe4f8 | 1867 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
1868 | return; |
1869 | } | |
1870 | ||
1871 | /* Pick up each field in turn. This used to be done with scanf, but | |
1872 | scanf will make trouble if CORE_ADDR size doesn't match | |
1873 | conversion directives correctly. The following code will work | |
1874 | with any size of CORE_ADDR. */ | |
1875 | text_addr = data_addr = bss_addr = 0; | |
1876 | ptr = buf; | |
1877 | lose = 0; | |
1878 | ||
1879 | if (strncmp (ptr, "Text=", 5) == 0) | |
1880 | { | |
1881 | ptr += 5; | |
1882 | /* Don't use strtol, could lose on big values. */ | |
1883 | while (*ptr && *ptr != ';') | |
1884 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
1885 | } | |
1886 | else | |
1887 | lose = 1; | |
1888 | ||
1889 | if (!lose && strncmp (ptr, ";Data=", 6) == 0) | |
1890 | { | |
1891 | ptr += 6; | |
1892 | while (*ptr && *ptr != ';') | |
1893 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
1894 | } | |
1895 | else | |
1896 | lose = 1; | |
1897 | ||
1898 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
1899 | { | |
1900 | ptr += 5; | |
1901 | while (*ptr && *ptr != ';') | |
1902 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
1903 | } | |
1904 | else | |
1905 | lose = 1; | |
1906 | ||
1907 | if (lose) | |
8a3fe4f8 | 1908 | error (_("Malformed response to offset query, %s"), buf); |
c906108c SS |
1909 | |
1910 | if (symfile_objfile == NULL) | |
1911 | return; | |
1912 | ||
802188a7 | 1913 | offs = ((struct section_offsets *) |
a39a16c4 | 1914 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 1915 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 1916 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 1917 | |
a4c8257b | 1918 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; |
c906108c SS |
1919 | |
1920 | /* This is a temporary kludge to force data and bss to use the same offsets | |
1921 | because that's what nlmconv does now. The real solution requires changes | |
1922 | to the stub and remote.c that I don't have time to do right now. */ | |
1923 | ||
a4c8257b EZ |
1924 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; |
1925 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
c906108c SS |
1926 | |
1927 | objfile_relocate (symfile_objfile, offs); | |
1928 | } | |
1929 | ||
1930 | /* Stub for catch_errors. */ | |
1931 | ||
0f71a2f6 | 1932 | static int |
36918e70 | 1933 | remote_start_remote_dummy (struct ui_out *uiout, void *dummy) |
0f71a2f6 | 1934 | { |
23860348 | 1935 | start_remote (); /* Initialize gdb process mechanisms. */ |
36918e70 AC |
1936 | /* NOTE: Return something >=0. A -ve value is reserved for |
1937 | catch_exceptions. */ | |
0f71a2f6 JM |
1938 | return 1; |
1939 | } | |
1940 | ||
9cbc821d | 1941 | static void |
36918e70 | 1942 | remote_start_remote (struct ui_out *uiout, void *dummy) |
c906108c | 1943 | { |
23860348 | 1944 | immediate_quit++; /* Allow user to interrupt it. */ |
c906108c SS |
1945 | |
1946 | /* Ack any packet which the remote side has already sent. */ | |
2cd58942 | 1947 | serial_write (remote_desc, "+", 1); |
c906108c SS |
1948 | |
1949 | /* Let the stub know that we want it to return the thread. */ | |
1950 | set_thread (-1, 0); | |
1951 | ||
39f77062 | 1952 | inferior_ptid = remote_current_thread (inferior_ptid); |
c906108c | 1953 | |
23860348 | 1954 | get_offsets (); /* Get text, data & bss offsets. */ |
c906108c | 1955 | |
23860348 | 1956 | putpkt ("?"); /* Initiate a query from remote machine. */ |
8edbea78 | 1957 | immediate_quit--; |
c906108c | 1958 | |
9cbc821d | 1959 | remote_start_remote_dummy (uiout, dummy); |
c906108c SS |
1960 | } |
1961 | ||
1962 | /* Open a connection to a remote debugger. | |
1963 | NAME is the filename used for communication. */ | |
1964 | ||
1965 | static void | |
fba45db2 | 1966 | remote_open (char *name, int from_tty) |
c906108c | 1967 | { |
92d1e331 | 1968 | remote_open_1 (name, from_tty, &remote_ops, 0, 0); |
c906108c SS |
1969 | } |
1970 | ||
23860348 | 1971 | /* Just like remote_open, but with asynchronous support. */ |
43ff13b4 | 1972 | static void |
fba45db2 | 1973 | remote_async_open (char *name, int from_tty) |
43ff13b4 | 1974 | { |
92d1e331 | 1975 | remote_open_1 (name, from_tty, &remote_async_ops, 0, 1); |
43ff13b4 JM |
1976 | } |
1977 | ||
c906108c SS |
1978 | /* Open a connection to a remote debugger using the extended |
1979 | remote gdb protocol. NAME is the filename used for communication. */ | |
1980 | ||
1981 | static void | |
fba45db2 | 1982 | extended_remote_open (char *name, int from_tty) |
c906108c | 1983 | { |
92d1e331 DJ |
1984 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */, |
1985 | 0 /* async_p */); | |
c906108c SS |
1986 | } |
1987 | ||
23860348 | 1988 | /* Just like extended_remote_open, but with asynchronous support. */ |
43ff13b4 | 1989 | static void |
fba45db2 | 1990 | extended_remote_async_open (char *name, int from_tty) |
43ff13b4 | 1991 | { |
92d1e331 DJ |
1992 | remote_open_1 (name, from_tty, &extended_async_remote_ops, |
1993 | 1 /*extended_p */, 1 /* async_p */); | |
43ff13b4 JM |
1994 | } |
1995 | ||
c906108c SS |
1996 | /* Generic code for opening a connection to a remote target. */ |
1997 | ||
d471ea57 AC |
1998 | static void |
1999 | init_all_packet_configs (void) | |
2000 | { | |
2001 | int i; | |
444abaca DJ |
2002 | for (i = 0; i < PACKET_MAX; i++) |
2003 | update_packet_config (&remote_protocol_packets[i]); | |
d471ea57 AC |
2004 | } |
2005 | ||
23860348 | 2006 | /* Symbol look-up. */ |
dc8acb97 MS |
2007 | |
2008 | static void | |
2009 | remote_check_symbols (struct objfile *objfile) | |
2010 | { | |
d01949b6 | 2011 | struct remote_state *rs = get_remote_state (); |
dc8acb97 MS |
2012 | char *msg, *reply, *tmp; |
2013 | struct minimal_symbol *sym; | |
2014 | int end; | |
2015 | ||
444abaca | 2016 | if (remote_protocol_packets[PACKET_qSymbol].support == PACKET_DISABLE) |
dc8acb97 MS |
2017 | return; |
2018 | ||
6d820c5c DJ |
2019 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
2020 | because we need both at the same time. */ | |
ea9c271d | 2021 | msg = alloca (get_remote_packet_size ()); |
6d820c5c DJ |
2022 | |
2023 | reply = rs->buf; | |
dc8acb97 | 2024 | |
23860348 | 2025 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
2026 | |
2027 | putpkt ("qSymbol::"); | |
6d820c5c DJ |
2028 | getpkt (&rs->buf, &rs->buf_size, 0); |
2029 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSymbol]); | |
dc8acb97 MS |
2030 | |
2031 | while (strncmp (reply, "qSymbol:", 8) == 0) | |
2032 | { | |
2033 | tmp = &reply[8]; | |
cfd77fa1 | 2034 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
2035 | msg[end] = '\0'; |
2036 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
2037 | if (sym == NULL) | |
ea9c271d | 2038 | xsnprintf (msg, get_remote_packet_size (), "qSymbol::%s", &reply[8]); |
dc8acb97 | 2039 | else |
ea9c271d | 2040 | xsnprintf (msg, get_remote_packet_size (), "qSymbol:%s:%s", |
ecbc58df WZ |
2041 | paddr_nz (SYMBOL_VALUE_ADDRESS (sym)), |
2042 | &reply[8]); | |
dc8acb97 | 2043 | putpkt (msg); |
6d820c5c | 2044 | getpkt (&rs->buf, &rs->buf_size, 0); |
dc8acb97 MS |
2045 | } |
2046 | } | |
2047 | ||
9db8d71f DJ |
2048 | static struct serial * |
2049 | remote_serial_open (char *name) | |
2050 | { | |
2051 | static int udp_warning = 0; | |
2052 | ||
2053 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
2054 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
2055 | serial connection is reliable and not the serial connection promising | |
2056 | to be. */ | |
2057 | if (!udp_warning && strncmp (name, "udp:", 4) == 0) | |
2058 | { | |
8a3fe4f8 AC |
2059 | warning (_("\ |
2060 | The remote protocol may be unreliable over UDP.\n\ | |
2061 | Some events may be lost, rendering further debugging impossible.")); | |
9db8d71f DJ |
2062 | udp_warning = 1; |
2063 | } | |
2064 | ||
2065 | return serial_open (name); | |
2066 | } | |
2067 | ||
c906108c | 2068 | static void |
fba45db2 | 2069 | remote_open_1 (char *name, int from_tty, struct target_ops *target, |
92d1e331 | 2070 | int extended_p, int async_p) |
c906108c | 2071 | { |
d01949b6 | 2072 | struct remote_state *rs = get_remote_state (); |
c906108c | 2073 | if (name == 0) |
8a3fe4f8 | 2074 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 2075 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 2076 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 2077 | |
23860348 | 2078 | /* See FIXME above. */ |
92d1e331 DJ |
2079 | if (!async_p) |
2080 | wait_forever_enabled_p = 1; | |
6426a772 | 2081 | |
c906108c SS |
2082 | target_preopen (from_tty); |
2083 | ||
2084 | unpush_target (target); | |
2085 | ||
ad9a8f3f | 2086 | remote_fileio_reset (); |
1dd41f16 NS |
2087 | reopen_exec_file (); |
2088 | reread_symbols (); | |
2089 | ||
9db8d71f | 2090 | remote_desc = remote_serial_open (name); |
c906108c SS |
2091 | if (!remote_desc) |
2092 | perror_with_name (name); | |
2093 | ||
2094 | if (baud_rate != -1) | |
2095 | { | |
2cd58942 | 2096 | if (serial_setbaudrate (remote_desc, baud_rate)) |
c906108c | 2097 | { |
9b74d5d3 KB |
2098 | /* The requested speed could not be set. Error out to |
2099 | top level after closing remote_desc. Take care to | |
2100 | set remote_desc to NULL to avoid closing remote_desc | |
2101 | more than once. */ | |
2cd58942 | 2102 | serial_close (remote_desc); |
9b74d5d3 | 2103 | remote_desc = NULL; |
c906108c SS |
2104 | perror_with_name (name); |
2105 | } | |
2106 | } | |
2107 | ||
2cd58942 | 2108 | serial_raw (remote_desc); |
c906108c SS |
2109 | |
2110 | /* If there is something sitting in the buffer we might take it as a | |
2111 | response to a command, which would be bad. */ | |
2cd58942 | 2112 | serial_flush_input (remote_desc); |
c906108c SS |
2113 | |
2114 | if (from_tty) | |
2115 | { | |
2116 | puts_filtered ("Remote debugging using "); | |
2117 | puts_filtered (name); | |
2118 | puts_filtered ("\n"); | |
2119 | } | |
23860348 | 2120 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 2121 | |
d471ea57 | 2122 | init_all_packet_configs (); |
802188a7 | 2123 | |
c5aa993b | 2124 | general_thread = -2; |
cce74817 | 2125 | continue_thread = -2; |
c906108c | 2126 | |
9d1f7ab2 MS |
2127 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
2128 | use_threadinfo_query = 1; | |
2129 | use_threadextra_query = 1; | |
2130 | ||
c906108c SS |
2131 | /* Without this, some commands which require an active target (such |
2132 | as kill) won't work. This variable serves (at least) double duty | |
2133 | as both the pid of the target process (if it has such), and as a | |
2134 | flag indicating that a target is active. These functions should | |
2135 | be split out into seperate variables, especially since GDB will | |
2136 | someday have a notion of debugging several processes. */ | |
2137 | ||
39f77062 | 2138 | inferior_ptid = pid_to_ptid (MAGIC_NULL_PID); |
92d1e331 DJ |
2139 | |
2140 | if (async_p) | |
2141 | { | |
23860348 | 2142 | /* With this target we start out by owning the terminal. */ |
92d1e331 DJ |
2143 | remote_async_terminal_ours_p = 1; |
2144 | ||
2145 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
2146 | assumed that the target is already ready and able to respond to | |
2147 | requests. Unfortunately remote_start_remote() eventually calls | |
2148 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets | |
2149 | around this. Eventually a mechanism that allows | |
2150 | wait_for_inferior() to expect/get timeouts will be | |
23860348 | 2151 | implemented. */ |
92d1e331 DJ |
2152 | wait_forever_enabled_p = 0; |
2153 | } | |
2154 | ||
23860348 | 2155 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 2156 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 2157 | |
36918e70 | 2158 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
2159 | target (we'd otherwise be in an inconsistent state) and then |
2160 | propogate the error on up the exception chain. This ensures that | |
2161 | the caller doesn't stumble along blindly assuming that the | |
2162 | function succeeded. The CLI doesn't have this problem but other | |
2163 | UI's, such as MI do. | |
36918e70 AC |
2164 | |
2165 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
2166 | this function should return an error indication letting the | |
ce2826aa | 2167 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
2168 | ``target remote'' is directly wired to this function making that |
2169 | impossible. On a positive note, the CLI side of this problem has | |
2170 | been fixed - the function set_cmd_context() makes it possible for | |
2171 | all the ``target ....'' commands to share a common callback | |
2172 | function. See cli-dump.c. */ | |
109c3e39 AC |
2173 | { |
2174 | struct gdb_exception ex | |
2175 | = catch_exception (uiout, remote_start_remote, NULL, RETURN_MASK_ALL); | |
2176 | if (ex.reason < 0) | |
2177 | { | |
2178 | pop_target (); | |
2179 | if (async_p) | |
2180 | wait_forever_enabled_p = 1; | |
2181 | throw_exception (ex); | |
2182 | } | |
2183 | } | |
c906108c | 2184 | |
92d1e331 DJ |
2185 | if (async_p) |
2186 | wait_forever_enabled_p = 1; | |
6426a772 JM |
2187 | |
2188 | if (extended_p) | |
43ff13b4 | 2189 | { |
6240bebf | 2190 | /* Tell the remote that we are using the extended protocol. */ |
6426a772 | 2191 | putpkt ("!"); |
6d820c5c | 2192 | getpkt (&rs->buf, &rs->buf_size, 0); |
43ff13b4 | 2193 | } |
a77053c2 | 2194 | |
9353355f | 2195 | post_create_inferior (¤t_target, from_tty); |
f78f6cf1 | 2196 | |
23860348 | 2197 | if (exec_bfd) /* No use without an exec file. */ |
9353355f | 2198 | remote_check_symbols (symfile_objfile); |
43ff13b4 JM |
2199 | } |
2200 | ||
c906108c SS |
2201 | /* This takes a program previously attached to and detaches it. After |
2202 | this is done, GDB can be used to debug some other program. We | |
2203 | better not have left any breakpoints in the target program or it'll | |
2204 | die when it hits one. */ | |
2205 | ||
2206 | static void | |
fba45db2 | 2207 | remote_detach (char *args, int from_tty) |
c906108c | 2208 | { |
d01949b6 | 2209 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
2210 | |
2211 | if (args) | |
8a3fe4f8 | 2212 | error (_("Argument given to \"detach\" when remotely debugging.")); |
c906108c SS |
2213 | |
2214 | /* Tell the remote target to detach. */ | |
6d820c5c DJ |
2215 | strcpy (rs->buf, "D"); |
2216 | remote_send (&rs->buf, &rs->buf_size); | |
c906108c | 2217 | |
23860348 | 2218 | /* Unregister the file descriptor from the event loop. */ |
6ad8ae5c DJ |
2219 | if (target_is_async_p ()) |
2220 | serial_async (remote_desc, NULL, 0); | |
2221 | ||
cca728d0 | 2222 | target_mourn_inferior (); |
c906108c SS |
2223 | if (from_tty) |
2224 | puts_filtered ("Ending remote debugging.\n"); | |
2225 | } | |
2226 | ||
6ad8ae5c DJ |
2227 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
2228 | ||
43ff13b4 | 2229 | static void |
597320e7 | 2230 | remote_disconnect (struct target_ops *target, char *args, int from_tty) |
43ff13b4 | 2231 | { |
43ff13b4 | 2232 | if (args) |
8a3fe4f8 | 2233 | error (_("Argument given to \"detach\" when remotely debugging.")); |
43ff13b4 | 2234 | |
23860348 | 2235 | /* Unregister the file descriptor from the event loop. */ |
ed9a39eb | 2236 | if (target_is_async_p ()) |
2cd58942 | 2237 | serial_async (remote_desc, NULL, 0); |
43ff13b4 | 2238 | |
cca728d0 | 2239 | target_mourn_inferior (); |
43ff13b4 JM |
2240 | if (from_tty) |
2241 | puts_filtered ("Ending remote debugging.\n"); | |
2242 | } | |
2243 | ||
c906108c SS |
2244 | /* Convert hex digit A to a number. */ |
2245 | ||
30559e10 | 2246 | static int |
fba45db2 | 2247 | fromhex (int a) |
c906108c SS |
2248 | { |
2249 | if (a >= '0' && a <= '9') | |
2250 | return a - '0'; | |
2251 | else if (a >= 'a' && a <= 'f') | |
2252 | return a - 'a' + 10; | |
2253 | else if (a >= 'A' && a <= 'F') | |
2254 | return a - 'A' + 10; | |
c5aa993b | 2255 | else |
8a3fe4f8 | 2256 | error (_("Reply contains invalid hex digit %d"), a); |
c906108c SS |
2257 | } |
2258 | ||
30559e10 | 2259 | static int |
cfd77fa1 | 2260 | hex2bin (const char *hex, gdb_byte *bin, int count) |
30559e10 MS |
2261 | { |
2262 | int i; | |
2263 | ||
30559e10 MS |
2264 | for (i = 0; i < count; i++) |
2265 | { | |
2266 | if (hex[0] == 0 || hex[1] == 0) | |
2267 | { | |
2268 | /* Hex string is short, or of uneven length. | |
23860348 | 2269 | Return the count that has been converted so far. */ |
30559e10 MS |
2270 | return i; |
2271 | } | |
2272 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); | |
2273 | hex += 2; | |
2274 | } | |
2275 | return i; | |
2276 | } | |
2277 | ||
c906108c SS |
2278 | /* Convert number NIB to a hex digit. */ |
2279 | ||
2280 | static int | |
fba45db2 | 2281 | tohex (int nib) |
c906108c SS |
2282 | { |
2283 | if (nib < 10) | |
c5aa993b | 2284 | return '0' + nib; |
c906108c | 2285 | else |
c5aa993b | 2286 | return 'a' + nib - 10; |
c906108c | 2287 | } |
30559e10 MS |
2288 | |
2289 | static int | |
cfd77fa1 | 2290 | bin2hex (const gdb_byte *bin, char *hex, int count) |
30559e10 MS |
2291 | { |
2292 | int i; | |
23860348 | 2293 | /* May use a length, or a nul-terminated string as input. */ |
30559e10 | 2294 | if (count == 0) |
cfd77fa1 | 2295 | count = strlen ((char *) bin); |
30559e10 MS |
2296 | |
2297 | for (i = 0; i < count; i++) | |
2298 | { | |
2299 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
2300 | *hex++ = tohex (*bin++ & 0xf); | |
2301 | } | |
2302 | *hex = 0; | |
2303 | return i; | |
2304 | } | |
c906108c | 2305 | \f |
506fb367 DJ |
2306 | /* Check for the availability of vCont. This function should also check |
2307 | the response. */ | |
c906108c SS |
2308 | |
2309 | static void | |
6d820c5c | 2310 | remote_vcont_probe (struct remote_state *rs) |
c906108c | 2311 | { |
6d820c5c DJ |
2312 | char *buf = rs->buf; |
2313 | ||
506fb367 DJ |
2314 | strcpy (buf, "vCont?"); |
2315 | putpkt (buf); | |
6d820c5c | 2316 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 2317 | |
506fb367 DJ |
2318 | /* Make sure that the features we assume are supported. */ |
2319 | if (strncmp (buf, "vCont", 5) == 0) | |
2320 | { | |
2321 | char *p = &buf[5]; | |
2322 | int support_s, support_S, support_c, support_C; | |
2323 | ||
2324 | support_s = 0; | |
2325 | support_S = 0; | |
2326 | support_c = 0; | |
2327 | support_C = 0; | |
2328 | while (p && *p == ';') | |
2329 | { | |
2330 | p++; | |
2331 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2332 | support_s = 1; | |
2333 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2334 | support_S = 1; | |
2335 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2336 | support_c = 1; | |
2337 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2338 | support_C = 1; | |
2339 | ||
2340 | p = strchr (p, ';'); | |
2341 | } | |
c906108c | 2342 | |
506fb367 DJ |
2343 | /* If s, S, c, and C are not all supported, we can't use vCont. Clearing |
2344 | BUF will make packet_ok disable the packet. */ | |
2345 | if (!support_s || !support_S || !support_c || !support_C) | |
2346 | buf[0] = 0; | |
2347 | } | |
c906108c | 2348 | |
444abaca | 2349 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 2350 | } |
c906108c | 2351 | |
506fb367 DJ |
2352 | /* Resume the remote inferior by using a "vCont" packet. The thread |
2353 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
2354 | resumed thread should be single-stepped and/or signalled. If PTID's | |
2355 | PID is -1, then all threads are resumed; the thread to be stepped and/or | |
2356 | signalled is given in the global INFERIOR_PTID. This function returns | |
2357 | non-zero iff it resumes the inferior. | |
44eaed12 | 2358 | |
506fb367 DJ |
2359 | This function issues a strict subset of all possible vCont commands at the |
2360 | moment. */ | |
44eaed12 | 2361 | |
506fb367 DJ |
2362 | static int |
2363 | remote_vcont_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
2364 | { | |
2365 | struct remote_state *rs = get_remote_state (); | |
2366 | int pid = PIDGET (ptid); | |
2963ee1d | 2367 | char *buf = NULL, *outbuf; |
506fb367 | 2368 | struct cleanup *old_cleanup; |
44eaed12 | 2369 | |
444abaca | 2370 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN) |
6d820c5c | 2371 | remote_vcont_probe (rs); |
44eaed12 | 2372 | |
444abaca | 2373 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_DISABLE) |
6d820c5c | 2374 | return 0; |
44eaed12 | 2375 | |
506fb367 DJ |
2376 | /* If we could generate a wider range of packets, we'd have to worry |
2377 | about overflowing BUF. Should there be a generic | |
2378 | "multi-part-packet" packet? */ | |
2379 | ||
2380 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) | |
c906108c | 2381 | { |
506fb367 DJ |
2382 | /* MAGIC_NULL_PTID means that we don't have any active threads, so we |
2383 | don't have any PID numbers the inferior will understand. Make sure | |
2384 | to only send forms that do not specify a PID. */ | |
2385 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d | 2386 | outbuf = xstrprintf ("vCont;S%02x", siggnal); |
506fb367 | 2387 | else if (step) |
2963ee1d | 2388 | outbuf = xstrprintf ("vCont;s"); |
506fb367 | 2389 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d | 2390 | outbuf = xstrprintf ("vCont;C%02x", siggnal); |
506fb367 | 2391 | else |
2963ee1d | 2392 | outbuf = xstrprintf ("vCont;c"); |
506fb367 DJ |
2393 | } |
2394 | else if (pid == -1) | |
2395 | { | |
2396 | /* Resume all threads, with preference for INFERIOR_PTID. */ | |
2397 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d DJ |
2398 | outbuf = xstrprintf ("vCont;S%02x:%x;c", siggnal, |
2399 | PIDGET (inferior_ptid)); | |
506fb367 | 2400 | else if (step) |
2963ee1d | 2401 | outbuf = xstrprintf ("vCont;s:%x;c", PIDGET (inferior_ptid)); |
506fb367 | 2402 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d DJ |
2403 | outbuf = xstrprintf ("vCont;C%02x:%x;c", siggnal, |
2404 | PIDGET (inferior_ptid)); | |
506fb367 | 2405 | else |
2963ee1d | 2406 | outbuf = xstrprintf ("vCont;c"); |
c906108c SS |
2407 | } |
2408 | else | |
506fb367 DJ |
2409 | { |
2410 | /* Scheduler locking; resume only PTID. */ | |
2411 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d | 2412 | outbuf = xstrprintf ("vCont;S%02x:%x", siggnal, pid); |
506fb367 | 2413 | else if (step) |
2963ee1d | 2414 | outbuf = xstrprintf ("vCont;s:%x", pid); |
506fb367 | 2415 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d | 2416 | outbuf = xstrprintf ("vCont;C%02x:%x", siggnal, pid); |
506fb367 | 2417 | else |
2963ee1d | 2418 | outbuf = xstrprintf ("vCont;c:%x", pid); |
506fb367 | 2419 | } |
c906108c | 2420 | |
ea9c271d | 2421 | gdb_assert (outbuf && strlen (outbuf) < get_remote_packet_size ()); |
6d820c5c | 2422 | old_cleanup = make_cleanup (xfree, outbuf); |
2963ee1d DJ |
2423 | |
2424 | putpkt (outbuf); | |
506fb367 DJ |
2425 | |
2426 | do_cleanups (old_cleanup); | |
2427 | ||
2428 | return 1; | |
c906108c | 2429 | } |
43ff13b4 | 2430 | |
506fb367 DJ |
2431 | /* Tell the remote machine to resume. */ |
2432 | ||
2433 | static enum target_signal last_sent_signal = TARGET_SIGNAL_0; | |
2434 | ||
2435 | static int last_sent_step; | |
2436 | ||
43ff13b4 | 2437 | static void |
506fb367 | 2438 | remote_resume (ptid_t ptid, int step, enum target_signal siggnal) |
43ff13b4 | 2439 | { |
d01949b6 | 2440 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 2441 | char *buf = rs->buf; |
39f77062 | 2442 | int pid = PIDGET (ptid); |
43ff13b4 | 2443 | |
43ff13b4 JM |
2444 | last_sent_signal = siggnal; |
2445 | last_sent_step = step; | |
2446 | ||
2447 | /* A hook for when we need to do something at the last moment before | |
2448 | resumption. */ | |
9a4105ab AC |
2449 | if (deprecated_target_resume_hook) |
2450 | (*deprecated_target_resume_hook) (); | |
43ff13b4 | 2451 | |
506fb367 DJ |
2452 | /* The vCont packet doesn't need to specify threads via Hc. */ |
2453 | if (remote_vcont_resume (ptid, step, siggnal)) | |
2454 | return; | |
2455 | ||
2456 | /* All other supported resume packets do use Hc, so call set_thread. */ | |
2457 | if (pid == -1) | |
23860348 | 2458 | set_thread (0, 0); /* Run any thread. */ |
506fb367 | 2459 | else |
23860348 | 2460 | set_thread (pid, 0); /* Run this thread. */ |
506fb367 | 2461 | |
43ff13b4 JM |
2462 | if (siggnal != TARGET_SIGNAL_0) |
2463 | { | |
2464 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 2465 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 2466 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
2467 | buf[3] = '\0'; |
2468 | } | |
2469 | else | |
c5aa993b | 2470 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 2471 | |
44eaed12 | 2472 | putpkt (buf); |
506fb367 DJ |
2473 | } |
2474 | ||
23860348 | 2475 | /* Same as remote_resume, but with async support. */ |
506fb367 DJ |
2476 | static void |
2477 | remote_async_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
2478 | { | |
2479 | remote_resume (ptid, step, siggnal); | |
43ff13b4 | 2480 | |
2acceee2 JM |
2481 | /* We are about to start executing the inferior, let's register it |
2482 | with the event loop. NOTE: this is the one place where all the | |
2483 | execution commands end up. We could alternatively do this in each | |
23860348 | 2484 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
2485 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
2486 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 2487 | NOT asynchronously. */ |
362646f5 | 2488 | if (target_can_async_p ()) |
2acceee2 | 2489 | target_async (inferior_event_handler, 0); |
23860348 | 2490 | /* Tell the world that the target is now executing. */ |
2acceee2 JM |
2491 | /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set |
2492 | this? Instead, should the client of target just assume (for | |
2493 | async targets) that the target is going to start executing? Is | |
2494 | this information already found in the continuation block? */ | |
ed9a39eb | 2495 | if (target_is_async_p ()) |
2acceee2 | 2496 | target_executing = 1; |
43ff13b4 | 2497 | } |
c906108c | 2498 | \f |
43ff13b4 JM |
2499 | |
2500 | /* Set up the signal handler for SIGINT, while the target is | |
23860348 | 2501 | executing, ovewriting the 'regular' SIGINT signal handler. */ |
43ff13b4 | 2502 | static void |
fba45db2 | 2503 | initialize_sigint_signal_handler (void) |
43ff13b4 | 2504 | { |
c5aa993b | 2505 | sigint_remote_token = |
43ff13b4 JM |
2506 | create_async_signal_handler (async_remote_interrupt, NULL); |
2507 | signal (SIGINT, handle_remote_sigint); | |
2508 | } | |
2509 | ||
23860348 | 2510 | /* Signal handler for SIGINT, while the target is executing. */ |
43ff13b4 | 2511 | static void |
fba45db2 | 2512 | handle_remote_sigint (int sig) |
43ff13b4 JM |
2513 | { |
2514 | signal (sig, handle_remote_sigint_twice); | |
c5aa993b | 2515 | sigint_remote_twice_token = |
43ff13b4 JM |
2516 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
2517 | mark_async_signal_handler_wrapper (sigint_remote_token); | |
2518 | } | |
2519 | ||
2520 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
2521 | sent once. It will take effect the second time that the user sends | |
23860348 | 2522 | a ^C. */ |
43ff13b4 | 2523 | static void |
fba45db2 | 2524 | handle_remote_sigint_twice (int sig) |
43ff13b4 JM |
2525 | { |
2526 | signal (sig, handle_sigint); | |
c5aa993b | 2527 | sigint_remote_twice_token = |
2df3850c | 2528 | create_async_signal_handler (inferior_event_handler_wrapper, NULL); |
43ff13b4 JM |
2529 | mark_async_signal_handler_wrapper (sigint_remote_twice_token); |
2530 | } | |
2531 | ||
6426a772 | 2532 | /* Perform the real interruption of the target execution, in response |
23860348 | 2533 | to a ^C. */ |
c5aa993b | 2534 | static void |
fba45db2 | 2535 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
2536 | { |
2537 | if (remote_debug) | |
2538 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
2539 | ||
2540 | target_stop (); | |
2541 | } | |
2542 | ||
2543 | /* Perform interrupt, if the first attempt did not succeed. Just give | |
23860348 | 2544 | up on the target alltogether. */ |
2df3850c | 2545 | void |
fba45db2 | 2546 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 2547 | { |
2df3850c JM |
2548 | if (remote_debug) |
2549 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt_twice called\n"); | |
6426a772 | 2550 | /* Do something only if the target was not killed by the previous |
23860348 | 2551 | cntl-C. */ |
6426a772 JM |
2552 | if (target_executing) |
2553 | { | |
2554 | interrupt_query (); | |
2555 | signal (SIGINT, handle_remote_sigint); | |
2556 | } | |
43ff13b4 JM |
2557 | } |
2558 | ||
2559 | /* Reinstall the usual SIGINT handlers, after the target has | |
23860348 | 2560 | stopped. */ |
6426a772 JM |
2561 | static void |
2562 | cleanup_sigint_signal_handler (void *dummy) | |
43ff13b4 JM |
2563 | { |
2564 | signal (SIGINT, handle_sigint); | |
2565 | if (sigint_remote_twice_token) | |
23860348 MS |
2566 | delete_async_signal_handler ((struct async_signal_handler **) |
2567 | &sigint_remote_twice_token); | |
43ff13b4 | 2568 | if (sigint_remote_token) |
23860348 MS |
2569 | delete_async_signal_handler ((struct async_signal_handler **) |
2570 | &sigint_remote_token); | |
43ff13b4 JM |
2571 | } |
2572 | ||
c906108c SS |
2573 | /* Send ^C to target to halt it. Target will respond, and send us a |
2574 | packet. */ | |
507f3c78 | 2575 | static void (*ofunc) (int); |
c906108c | 2576 | |
7a292a7a SS |
2577 | /* The command line interface's stop routine. This function is installed |
2578 | as a signal handler for SIGINT. The first time a user requests a | |
2579 | stop, we call remote_stop to send a break or ^C. If there is no | |
2580 | response from the target (it didn't stop when the user requested it), | |
23860348 | 2581 | we ask the user if he'd like to detach from the target. */ |
c906108c | 2582 | static void |
fba45db2 | 2583 | remote_interrupt (int signo) |
c906108c | 2584 | { |
23860348 | 2585 | /* If this doesn't work, try more severe steps. */ |
7a292a7a SS |
2586 | signal (signo, remote_interrupt_twice); |
2587 | ||
2588 | if (remote_debug) | |
0f71a2f6 | 2589 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); |
7a292a7a SS |
2590 | |
2591 | target_stop (); | |
2592 | } | |
2593 | ||
2594 | /* The user typed ^C twice. */ | |
2595 | ||
2596 | static void | |
fba45db2 | 2597 | remote_interrupt_twice (int signo) |
7a292a7a SS |
2598 | { |
2599 | signal (signo, ofunc); | |
2600 | interrupt_query (); | |
c906108c SS |
2601 | signal (signo, remote_interrupt); |
2602 | } | |
7a292a7a SS |
2603 | |
2604 | /* This is the generic stop called via the target vector. When a target | |
2605 | interrupt is requested, either by the command line or the GUI, we | |
23860348 | 2606 | will eventually end up here. */ |
c906108c | 2607 | static void |
fba45db2 | 2608 | remote_stop (void) |
c906108c | 2609 | { |
7a292a7a SS |
2610 | /* Send a break or a ^C, depending on user preference. */ |
2611 | if (remote_debug) | |
0f71a2f6 | 2612 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 2613 | |
7a292a7a | 2614 | if (remote_break) |
2cd58942 | 2615 | serial_send_break (remote_desc); |
c906108c | 2616 | else |
2cd58942 | 2617 | serial_write (remote_desc, "\003", 1); |
c906108c SS |
2618 | } |
2619 | ||
2620 | /* Ask the user what to do when an interrupt is received. */ | |
2621 | ||
2622 | static void | |
fba45db2 | 2623 | interrupt_query (void) |
c906108c SS |
2624 | { |
2625 | target_terminal_ours (); | |
2626 | ||
2627 | if (query ("Interrupted while waiting for the program.\n\ | |
2628 | Give up (and stop debugging it)? ")) | |
2629 | { | |
2630 | target_mourn_inferior (); | |
315a522e | 2631 | deprecated_throw_reason (RETURN_QUIT); |
c906108c SS |
2632 | } |
2633 | ||
2634 | target_terminal_inferior (); | |
2635 | } | |
2636 | ||
6426a772 JM |
2637 | /* Enable/disable target terminal ownership. Most targets can use |
2638 | terminal groups to control terminal ownership. Remote targets are | |
2639 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 2640 | is required. */ |
6426a772 JM |
2641 | |
2642 | static void | |
2643 | remote_async_terminal_inferior (void) | |
2644 | { | |
2645 | /* FIXME: cagney/1999-09-27: Shouldn't need to test for | |
2646 | sync_execution here. This function should only be called when | |
2647 | GDB is resuming the inferior in the forground. A background | |
2648 | resume (``run&'') should leave GDB in control of the terminal and | |
23860348 | 2649 | consequently should not call this code. */ |
6426a772 JM |
2650 | if (!sync_execution) |
2651 | return; | |
2652 | /* FIXME: cagney/1999-09-27: Closely related to the above. Make | |
2653 | calls target_terminal_*() idenpotent. The event-loop GDB talking | |
2654 | to an asynchronous target with a synchronous command calls this | |
2655 | function from both event-top.c and infrun.c/infcmd.c. Once GDB | |
2656 | stops trying to transfer the terminal to the target when it | |
2657 | shouldn't this guard can go away. */ | |
2658 | if (!remote_async_terminal_ours_p) | |
2659 | return; | |
2660 | delete_file_handler (input_fd); | |
2661 | remote_async_terminal_ours_p = 0; | |
2662 | initialize_sigint_signal_handler (); | |
2663 | /* NOTE: At this point we could also register our selves as the | |
2664 | recipient of all input. Any characters typed could then be | |
23860348 | 2665 | passed on down to the target. */ |
6426a772 JM |
2666 | } |
2667 | ||
2668 | static void | |
2669 | remote_async_terminal_ours (void) | |
2670 | { | |
23860348 | 2671 | /* See FIXME in remote_async_terminal_inferior. */ |
6426a772 JM |
2672 | if (!sync_execution) |
2673 | return; | |
23860348 | 2674 | /* See FIXME in remote_async_terminal_inferior. */ |
6426a772 JM |
2675 | if (remote_async_terminal_ours_p) |
2676 | return; | |
2677 | cleanup_sigint_signal_handler (NULL); | |
2678 | add_file_handler (input_fd, stdin_event_handler, 0); | |
2679 | remote_async_terminal_ours_p = 1; | |
2680 | } | |
2681 | ||
c906108c SS |
2682 | /* If nonzero, ignore the next kill. */ |
2683 | ||
2684 | int kill_kludge; | |
2685 | ||
2686 | void | |
917317f4 | 2687 | remote_console_output (char *msg) |
c906108c SS |
2688 | { |
2689 | char *p; | |
2690 | ||
c5aa993b | 2691 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
2692 | { |
2693 | char tb[2]; | |
2694 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
2695 | tb[0] = c; | |
2696 | tb[1] = 0; | |
43ff13b4 | 2697 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 2698 | } |
917317f4 | 2699 | gdb_flush (gdb_stdtarg); |
c906108c SS |
2700 | } |
2701 | ||
0f71a2f6 JM |
2702 | /* Wait until the remote machine stops, then return, |
2703 | storing status in STATUS just as `wait' would. | |
802188a7 | 2704 | Returns "pid", which in the case of a multi-threaded |
0f71a2f6 | 2705 | remote OS, is the thread-id. */ |
c906108c | 2706 | |
39f77062 KB |
2707 | static ptid_t |
2708 | remote_wait (ptid_t ptid, struct target_waitstatus *status) | |
c906108c | 2709 | { |
d01949b6 | 2710 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 2711 | struct remote_arch_state *rsa = get_remote_arch_state (); |
6d820c5c | 2712 | char *buf = rs->buf; |
b2dd6311 | 2713 | ULONGEST thread_num = -1; |
3c3bea1c | 2714 | ULONGEST addr; |
c906108c SS |
2715 | |
2716 | status->kind = TARGET_WAITKIND_EXITED; | |
2717 | status->value.integer = 0; | |
2718 | ||
2719 | while (1) | |
2720 | { | |
cfd77fa1 | 2721 | char *p; |
c906108c | 2722 | |
c906108c | 2723 | ofunc = signal (SIGINT, remote_interrupt); |
6d820c5c | 2724 | getpkt (&rs->buf, &rs->buf_size, 1); |
c906108c SS |
2725 | signal (SIGINT, ofunc); |
2726 | ||
2727 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 2728 | collection of trace data) every time the target stops. */ |
9a4105ab AC |
2729 | if (deprecated_target_wait_loop_hook) |
2730 | (*deprecated_target_wait_loop_hook) (); | |
c906108c | 2731 | |
3c3bea1c GS |
2732 | remote_stopped_by_watchpoint_p = 0; |
2733 | ||
c906108c SS |
2734 | switch (buf[0]) |
2735 | { | |
23860348 | 2736 | case 'E': /* Error of some sort. */ |
8a3fe4f8 | 2737 | warning (_("Remote failure reply: %s"), buf); |
c906108c | 2738 | continue; |
23860348 | 2739 | case 'F': /* File-I/O request. */ |
449092f6 CV |
2740 | remote_fileio_request (buf); |
2741 | continue; | |
23860348 | 2742 | case 'T': /* Status with PC, SP, FP, ... */ |
c906108c | 2743 | { |
cfd77fa1 | 2744 | gdb_byte regs[MAX_REGISTER_SIZE]; |
c906108c | 2745 | |
23860348 | 2746 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
c906108c | 2747 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where |
c5aa993b JM |
2748 | ss = signal number |
2749 | n... = register number | |
2750 | r... = register contents | |
2751 | */ | |
c906108c SS |
2752 | p = &buf[3]; /* after Txx */ |
2753 | ||
2754 | while (*p) | |
2755 | { | |
cfd77fa1 | 2756 | char *p1; |
c906108c | 2757 | char *p_temp; |
97345198 | 2758 | int fieldsize; |
3c3bea1c GS |
2759 | LONGEST pnum = 0; |
2760 | ||
23860348 MS |
2761 | /* If the packet contains a register number save it in |
2762 | pnum and set p1 to point to the character following | |
2763 | it. Otherwise p1 points to p. */ | |
c906108c | 2764 | |
23860348 MS |
2765 | /* If this packet is an awatch packet, don't parse the |
2766 | 'a' as a register number. */ | |
3c3bea1c GS |
2767 | |
2768 | if (strncmp (p, "awatch", strlen("awatch")) != 0) | |
2769 | { | |
2770 | /* Read the ``P'' register number. */ | |
2771 | pnum = strtol (p, &p_temp, 16); | |
cfd77fa1 | 2772 | p1 = p_temp; |
3c3bea1c | 2773 | } |
802188a7 | 2774 | else |
3c3bea1c | 2775 | p1 = p; |
c906108c | 2776 | |
23860348 | 2777 | if (p1 == p) /* No register number present here. */ |
c906108c | 2778 | { |
cfd77fa1 | 2779 | p1 = strchr (p, ':'); |
c906108c | 2780 | if (p1 == NULL) |
670aa98f | 2781 | error (_("Malformed packet(a) (missing colon): %s\n\ |
8a3fe4f8 | 2782 | Packet: '%s'\n"), |
670aa98f | 2783 | p, buf); |
3c3bea1c | 2784 | if (strncmp (p, "thread", p1 - p) == 0) |
c906108c SS |
2785 | { |
2786 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
2787 | record_currthread (thread_num); | |
cfd77fa1 | 2788 | p = p_temp; |
c906108c | 2789 | } |
3c3bea1c GS |
2790 | else if ((strncmp (p, "watch", p1 - p) == 0) |
2791 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
2792 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
2793 | { | |
2794 | remote_stopped_by_watchpoint_p = 1; | |
2795 | p = unpack_varlen_hex (++p1, &addr); | |
2796 | remote_watch_data_address = (CORE_ADDR)addr; | |
2797 | } | |
2798 | else | |
2799 | { | |
2800 | /* Silently skip unknown optional info. */ | |
2801 | p_temp = strchr (p1 + 1, ';'); | |
2802 | if (p_temp) | |
cfd77fa1 | 2803 | p = p_temp; |
3c3bea1c | 2804 | } |
c906108c SS |
2805 | } |
2806 | else | |
2807 | { | |
ea9c271d | 2808 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); |
c906108c SS |
2809 | p = p1; |
2810 | ||
2811 | if (*p++ != ':') | |
8a3fe4f8 AC |
2812 | error (_("Malformed packet(b) (missing colon): %s\n\ |
2813 | Packet: '%s'\n"), | |
3fcb8548 | 2814 | p, buf); |
c906108c | 2815 | |
ad10f812 | 2816 | if (reg == NULL) |
8a3fe4f8 AC |
2817 | error (_("Remote sent bad register number %s: %s\n\ |
2818 | Packet: '%s'\n"), | |
3fcb8548 | 2819 | phex_nz (pnum, 0), p, buf); |
c906108c | 2820 | |
cfd77fa1 | 2821 | fieldsize = hex2bin (p, regs, |
23860348 MS |
2822 | register_size (current_gdbarch, |
2823 | reg->regnum)); | |
97345198 | 2824 | p += 2 * fieldsize; |
23860348 MS |
2825 | if (fieldsize < register_size (current_gdbarch, |
2826 | reg->regnum)) | |
8a3fe4f8 | 2827 | warning (_("Remote reply is too short: %s"), buf); |
23860348 MS |
2828 | regcache_raw_supply (current_regcache, |
2829 | reg->regnum, regs); | |
c906108c SS |
2830 | } |
2831 | ||
2832 | if (*p++ != ';') | |
8a3fe4f8 | 2833 | error (_("Remote register badly formatted: %s\nhere: %s"), |
23860348 | 2834 | buf, p); |
c906108c SS |
2835 | } |
2836 | } | |
2837 | /* fall through */ | |
23860348 | 2838 | case 'S': /* Old style status, just signal only. */ |
c906108c SS |
2839 | status->kind = TARGET_WAITKIND_STOPPED; |
2840 | status->value.sig = (enum target_signal) | |
2841 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2842 | ||
0f71a2f6 JM |
2843 | if (buf[3] == 'p') |
2844 | { | |
0f71a2f6 JM |
2845 | thread_num = strtol ((const char *) &buf[4], NULL, 16); |
2846 | record_currthread (thread_num); | |
2847 | } | |
c906108c | 2848 | goto got_status; |
23860348 | 2849 | case 'W': /* Target exited. */ |
c906108c SS |
2850 | { |
2851 | /* The remote process exited. */ | |
2852 | status->kind = TARGET_WAITKIND_EXITED; | |
2853 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
2854 | goto got_status; | |
2855 | } | |
2856 | case 'X': | |
2857 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
2858 | status->value.sig = (enum target_signal) | |
2859 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2860 | kill_kludge = 1; | |
2861 | ||
2862 | goto got_status; | |
23860348 | 2863 | case 'O': /* Console output. */ |
c906108c SS |
2864 | remote_console_output (buf + 1); |
2865 | continue; | |
2866 | case '\0': | |
2867 | if (last_sent_signal != TARGET_SIGNAL_0) | |
2868 | { | |
2869 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 2870 | the remote system doesn't support it. */ |
c906108c SS |
2871 | target_terminal_ours_for_output (); |
2872 | printf_filtered | |
2873 | ("Can't send signals to this remote system. %s not sent.\n", | |
2874 | target_signal_to_name (last_sent_signal)); | |
2875 | last_sent_signal = TARGET_SIGNAL_0; | |
2876 | target_terminal_inferior (); | |
2877 | ||
2878 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
2879 | putpkt ((char *) buf); | |
2880 | continue; | |
2881 | } | |
2882 | /* else fallthrough */ | |
2883 | default: | |
8a3fe4f8 | 2884 | warning (_("Invalid remote reply: %s"), buf); |
c906108c SS |
2885 | continue; |
2886 | } | |
2887 | } | |
c5aa993b | 2888 | got_status: |
c906108c SS |
2889 | if (thread_num != -1) |
2890 | { | |
39f77062 | 2891 | return pid_to_ptid (thread_num); |
c906108c | 2892 | } |
39f77062 | 2893 | return inferior_ptid; |
c906108c SS |
2894 | } |
2895 | ||
23860348 | 2896 | /* Async version of remote_wait. */ |
39f77062 KB |
2897 | static ptid_t |
2898 | remote_async_wait (ptid_t ptid, struct target_waitstatus *status) | |
43ff13b4 | 2899 | { |
d01949b6 | 2900 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 2901 | struct remote_arch_state *rsa = get_remote_arch_state (); |
6d820c5c | 2902 | char *buf = rs->buf; |
b2dd6311 | 2903 | ULONGEST thread_num = -1; |
3c3bea1c | 2904 | ULONGEST addr; |
43ff13b4 JM |
2905 | |
2906 | status->kind = TARGET_WAITKIND_EXITED; | |
2907 | status->value.integer = 0; | |
2908 | ||
3c3bea1c GS |
2909 | remote_stopped_by_watchpoint_p = 0; |
2910 | ||
43ff13b4 JM |
2911 | while (1) |
2912 | { | |
cfd77fa1 | 2913 | char *p; |
c5aa993b | 2914 | |
ed9a39eb | 2915 | if (!target_is_async_p ()) |
43ff13b4 | 2916 | ofunc = signal (SIGINT, remote_interrupt); |
6426a772 JM |
2917 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
2918 | _never_ wait for ever -> test on target_is_async_p(). | |
2919 | However, before we do that we need to ensure that the caller | |
23860348 | 2920 | knows how to take the target into/out of async mode. */ |
6d820c5c | 2921 | getpkt (&rs->buf, &rs->buf_size, wait_forever_enabled_p); |
ed9a39eb | 2922 | if (!target_is_async_p ()) |
43ff13b4 JM |
2923 | signal (SIGINT, ofunc); |
2924 | ||
2925 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 2926 | collection of trace data) every time the target stops. */ |
9a4105ab AC |
2927 | if (deprecated_target_wait_loop_hook) |
2928 | (*deprecated_target_wait_loop_hook) (); | |
43ff13b4 JM |
2929 | |
2930 | switch (buf[0]) | |
2931 | { | |
23860348 | 2932 | case 'E': /* Error of some sort. */ |
8a3fe4f8 | 2933 | warning (_("Remote failure reply: %s"), buf); |
43ff13b4 | 2934 | continue; |
23860348 | 2935 | case 'F': /* File-I/O request. */ |
449092f6 CV |
2936 | remote_fileio_request (buf); |
2937 | continue; | |
23860348 | 2938 | case 'T': /* Status with PC, SP, FP, ... */ |
43ff13b4 | 2939 | { |
cfd77fa1 | 2940 | gdb_byte regs[MAX_REGISTER_SIZE]; |
43ff13b4 | 2941 | |
23860348 | 2942 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
43ff13b4 | 2943 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where |
c5aa993b JM |
2944 | ss = signal number |
2945 | n... = register number | |
2946 | r... = register contents | |
2947 | */ | |
43ff13b4 JM |
2948 | p = &buf[3]; /* after Txx */ |
2949 | ||
2950 | while (*p) | |
2951 | { | |
cfd77fa1 | 2952 | char *p1; |
43ff13b4 | 2953 | char *p_temp; |
6c3f2dbf | 2954 | int fieldsize; |
3c3bea1c | 2955 | long pnum = 0; |
43ff13b4 | 2956 | |
23860348 MS |
2957 | /* If the packet contains a register number, save it |
2958 | in pnum and set p1 to point to the character | |
2959 | following it. Otherwise p1 points to p. */ | |
3c3bea1c GS |
2960 | |
2961 | /* If this packet is an awatch packet, don't parse the 'a' | |
2962 | as a register number. */ | |
802188a7 | 2963 | |
3c3bea1c GS |
2964 | if (!strncmp (p, "awatch", strlen ("awatch")) != 0) |
2965 | { | |
2966 | /* Read the register number. */ | |
2967 | pnum = strtol (p, &p_temp, 16); | |
cfd77fa1 | 2968 | p1 = p_temp; |
3c3bea1c | 2969 | } |
802188a7 | 2970 | else |
3c3bea1c | 2971 | p1 = p; |
43ff13b4 | 2972 | |
23860348 | 2973 | if (p1 == p) /* No register number present here. */ |
43ff13b4 | 2974 | { |
cfd77fa1 | 2975 | p1 = strchr (p, ':'); |
43ff13b4 | 2976 | if (p1 == NULL) |
8a3fe4f8 AC |
2977 | error (_("Malformed packet(a) (missing colon): %s\n\ |
2978 | Packet: '%s'\n"), | |
3fcb8548 | 2979 | p, buf); |
3c3bea1c | 2980 | if (strncmp (p, "thread", p1 - p) == 0) |
43ff13b4 JM |
2981 | { |
2982 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
2983 | record_currthread (thread_num); | |
cfd77fa1 | 2984 | p = p_temp; |
43ff13b4 | 2985 | } |
3c3bea1c GS |
2986 | else if ((strncmp (p, "watch", p1 - p) == 0) |
2987 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
2988 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
2989 | { | |
2990 | remote_stopped_by_watchpoint_p = 1; | |
2991 | p = unpack_varlen_hex (++p1, &addr); | |
2992 | remote_watch_data_address = (CORE_ADDR)addr; | |
2993 | } | |
2994 | else | |
2995 | { | |
2996 | /* Silently skip unknown optional info. */ | |
cfd77fa1 | 2997 | p_temp = strchr (p1 + 1, ';'); |
3c3bea1c GS |
2998 | if (p_temp) |
2999 | p = p_temp; | |
3000 | } | |
43ff13b4 | 3001 | } |
802188a7 | 3002 | |
43ff13b4 JM |
3003 | else |
3004 | { | |
ea9c271d | 3005 | struct packet_reg *reg = packet_reg_from_pnum (rsa, pnum); |
43ff13b4 | 3006 | p = p1; |
43ff13b4 | 3007 | if (*p++ != ':') |
8a3fe4f8 AC |
3008 | error (_("Malformed packet(b) (missing colon): %s\n\ |
3009 | Packet: '%s'\n"), | |
3fcb8548 | 3010 | p, buf); |
43ff13b4 | 3011 | |
ad10f812 | 3012 | if (reg == NULL) |
8a3fe4f8 AC |
3013 | error (_("Remote sent bad register number %ld: %s\n\ |
3014 | Packet: '%s'\n"), | |
3fcb8548 | 3015 | pnum, p, buf); |
43ff13b4 | 3016 | |
cfd77fa1 | 3017 | fieldsize = hex2bin (p, regs, |
23860348 MS |
3018 | register_size (current_gdbarch, |
3019 | reg->regnum)); | |
6c3f2dbf | 3020 | p += 2 * fieldsize; |
23860348 MS |
3021 | if (fieldsize < register_size (current_gdbarch, |
3022 | reg->regnum)) | |
8a3fe4f8 | 3023 | warning (_("Remote reply is too short: %s"), buf); |
23a6d369 | 3024 | regcache_raw_supply (current_regcache, reg->regnum, regs); |
43ff13b4 JM |
3025 | } |
3026 | ||
3027 | if (*p++ != ';') | |
8a3fe4f8 | 3028 | error (_("Remote register badly formatted: %s\nhere: %s"), |
0a2cfde4 | 3029 | buf, p); |
43ff13b4 JM |
3030 | } |
3031 | } | |
3032 | /* fall through */ | |
23860348 | 3033 | case 'S': /* Old style status, just signal only. */ |
43ff13b4 JM |
3034 | status->kind = TARGET_WAITKIND_STOPPED; |
3035 | status->value.sig = (enum target_signal) | |
3036 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3037 | ||
3038 | if (buf[3] == 'p') | |
3039 | { | |
43ff13b4 JM |
3040 | thread_num = strtol ((const char *) &buf[4], NULL, 16); |
3041 | record_currthread (thread_num); | |
3042 | } | |
43ff13b4 | 3043 | goto got_status; |
23860348 | 3044 | case 'W': /* Target exited. */ |
43ff13b4 JM |
3045 | { |
3046 | /* The remote process exited. */ | |
3047 | status->kind = TARGET_WAITKIND_EXITED; | |
3048 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
3049 | goto got_status; | |
3050 | } | |
3051 | case 'X': | |
3052 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
3053 | status->value.sig = (enum target_signal) | |
3054 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
3055 | kill_kludge = 1; | |
3056 | ||
3057 | goto got_status; | |
23860348 | 3058 | case 'O': /* Console output. */ |
43ff13b4 | 3059 | remote_console_output (buf + 1); |
c4093a6a | 3060 | /* Return immediately to the event loop. The event loop will |
23860348 | 3061 | still be waiting on the inferior afterwards. */ |
c4093a6a JM |
3062 | status->kind = TARGET_WAITKIND_IGNORE; |
3063 | goto got_status; | |
43ff13b4 JM |
3064 | case '\0': |
3065 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3066 | { | |
3067 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3068 | the remote system doesn't support it. */ |
43ff13b4 JM |
3069 | target_terminal_ours_for_output (); |
3070 | printf_filtered | |
3071 | ("Can't send signals to this remote system. %s not sent.\n", | |
3072 | target_signal_to_name (last_sent_signal)); | |
3073 | last_sent_signal = TARGET_SIGNAL_0; | |
3074 | target_terminal_inferior (); | |
3075 | ||
3076 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3077 | putpkt ((char *) buf); | |
3078 | continue; | |
3079 | } | |
3080 | /* else fallthrough */ | |
3081 | default: | |
8a3fe4f8 | 3082 | warning (_("Invalid remote reply: %s"), buf); |
43ff13b4 JM |
3083 | continue; |
3084 | } | |
3085 | } | |
c5aa993b | 3086 | got_status: |
43ff13b4 JM |
3087 | if (thread_num != -1) |
3088 | { | |
39f77062 | 3089 | return pid_to_ptid (thread_num); |
43ff13b4 | 3090 | } |
39f77062 | 3091 | return inferior_ptid; |
43ff13b4 JM |
3092 | } |
3093 | ||
c906108c SS |
3094 | /* Number of bytes of registers this stub implements. */ |
3095 | ||
3096 | static int register_bytes_found; | |
3097 | ||
3098 | /* Read the remote registers into the block REGS. */ | |
ad10f812 | 3099 | /* Currently we just read all the registers, so we don't use regnum. */ |
c906108c | 3100 | |
b96ec7ac AC |
3101 | static int |
3102 | fetch_register_using_p (int regnum) | |
3103 | { | |
3104 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 3105 | char *buf = rs->buf, *p; |
b96ec7ac AC |
3106 | char regp[MAX_REGISTER_SIZE]; |
3107 | int i; | |
3108 | ||
fcad0fa4 JB |
3109 | p = buf; |
3110 | *p++ = 'p'; | |
3111 | p += hexnumstr (p, regnum); | |
3112 | *p++ = '\0'; | |
6d820c5c | 3113 | remote_send (&rs->buf, &rs->buf_size); |
3f9a994c JB |
3114 | |
3115 | /* If the stub didn't recognize the packet, or if we got an error, | |
3116 | tell our caller. */ | |
3117 | if (buf[0] == '\0' || buf[0] == 'E') | |
3118 | return 0; | |
3119 | ||
3120 | /* If this register is unfetchable, tell the regcache. */ | |
3121 | if (buf[0] == 'x') | |
8480adf2 | 3122 | { |
3f9a994c JB |
3123 | regcache_raw_supply (current_regcache, regnum, NULL); |
3124 | set_register_cached (regnum, -1); | |
8480adf2 | 3125 | return 1; |
b96ec7ac | 3126 | } |
b96ec7ac | 3127 | |
3f9a994c JB |
3128 | /* Otherwise, parse and supply the value. */ |
3129 | p = buf; | |
3130 | i = 0; | |
3131 | while (p[0] != 0) | |
3132 | { | |
3133 | if (p[1] == 0) | |
3134 | { | |
8a3fe4f8 | 3135 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
3136 | return 0; |
3137 | } | |
3138 | ||
3139 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3140 | p += 2; | |
3141 | } | |
3142 | regcache_raw_supply (current_regcache, regnum, regp); | |
3143 | return 1; | |
b96ec7ac AC |
3144 | } |
3145 | ||
c906108c | 3146 | static void |
ad10f812 | 3147 | remote_fetch_registers (int regnum) |
c906108c | 3148 | { |
d01949b6 | 3149 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 3150 | struct remote_arch_state *rsa = get_remote_arch_state (); |
6d820c5c | 3151 | char *buf = rs->buf; |
c906108c SS |
3152 | int i; |
3153 | char *p; | |
ea9c271d | 3154 | char *regs = alloca (rsa->sizeof_g_packet); |
c906108c | 3155 | |
39f77062 | 3156 | set_thread (PIDGET (inferior_ptid), 1); |
c906108c | 3157 | |
b323314b AC |
3158 | if (regnum >= 0) |
3159 | { | |
ea9c271d | 3160 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); |
b323314b AC |
3161 | gdb_assert (reg != NULL); |
3162 | if (!reg->in_g_packet) | |
3163 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 AC |
3164 | _("Attempt to fetch a non G-packet register when this " |
3165 | "remote.c does not support the p-packet.")); | |
b323314b | 3166 | } |
444abaca | 3167 | switch (remote_protocol_packets[PACKET_p].support) |
b96ec7ac AC |
3168 | { |
3169 | case PACKET_DISABLE: | |
3170 | break; | |
3171 | case PACKET_ENABLE: | |
3172 | if (fetch_register_using_p (regnum)) | |
3173 | return; | |
3174 | else | |
8a3fe4f8 | 3175 | error (_("Protocol error: p packet not recognized by stub")); |
b96ec7ac AC |
3176 | case PACKET_SUPPORT_UNKNOWN: |
3177 | if (fetch_register_using_p (regnum)) | |
3178 | { | |
3179 | /* The stub recognized the 'p' packet. Remember this. */ | |
444abaca | 3180 | remote_protocol_packets[PACKET_p].support = PACKET_ENABLE; |
b96ec7ac AC |
3181 | return; |
3182 | } | |
3183 | else | |
3184 | { | |
3185 | /* The stub does not support the 'P' packet. Use 'G' | |
3186 | instead, and don't try using 'P' in the future (it | |
3187 | will just waste our time). */ | |
444abaca | 3188 | remote_protocol_packets[PACKET_p].support = PACKET_DISABLE; |
b96ec7ac AC |
3189 | break; |
3190 | } | |
3191 | } | |
b323314b | 3192 | |
c906108c | 3193 | sprintf (buf, "g"); |
6d820c5c | 3194 | remote_send (&rs->buf, &rs->buf_size); |
c906108c | 3195 | |
11cf8741 JM |
3196 | /* Save the size of the packet sent to us by the target. Its used |
3197 | as a heuristic when determining the max size of packets that the | |
23860348 | 3198 | target can safely receive. */ |
ea9c271d DJ |
3199 | if ((rsa->actual_register_packet_size) == 0) |
3200 | (rsa->actual_register_packet_size) = strlen (buf); | |
c906108c SS |
3201 | |
3202 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 3203 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c SS |
3204 | |
3205 | /* We can get out of synch in various cases. If the first character | |
3206 | in the buffer is not a hex character, assume that has happened | |
3207 | and try to fetch another packet to read. */ | |
3208 | while ((buf[0] < '0' || buf[0] > '9') | |
3de11b2e | 3209 | && (buf[0] < 'A' || buf[0] > 'F') |
c906108c | 3210 | && (buf[0] < 'a' || buf[0] > 'f') |
23860348 | 3211 | && buf[0] != 'x') /* New: unavailable register value. */ |
c906108c SS |
3212 | { |
3213 | if (remote_debug) | |
0f71a2f6 JM |
3214 | fprintf_unfiltered (gdb_stdlog, |
3215 | "Bad register packet; fetching a new packet\n"); | |
6d820c5c | 3216 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c SS |
3217 | } |
3218 | ||
3219 | /* Reply describes registers byte by byte, each byte encoded as two | |
3220 | hex characters. Suck them all up, then supply them to the | |
3221 | register cacheing/storage mechanism. */ | |
3222 | ||
3223 | p = buf; | |
ea9c271d | 3224 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c SS |
3225 | { |
3226 | if (p[0] == 0) | |
3227 | break; | |
3228 | if (p[1] == 0) | |
3229 | { | |
8a3fe4f8 | 3230 | warning (_("Remote reply is of odd length: %s"), buf); |
c906108c SS |
3231 | /* Don't change register_bytes_found in this case, and don't |
3232 | print a second warning. */ | |
3233 | goto supply_them; | |
3234 | } | |
3235 | if (p[0] == 'x' && p[1] == 'x') | |
c5aa993b | 3236 | regs[i] = 0; /* 'x' */ |
c906108c SS |
3237 | else |
3238 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3239 | p += 2; | |
3240 | } | |
3241 | ||
3242 | if (i != register_bytes_found) | |
3243 | { | |
3244 | register_bytes_found = i; | |
2649061d AC |
3245 | if (REGISTER_BYTES_OK_P () |
3246 | && !REGISTER_BYTES_OK (i)) | |
8a3fe4f8 | 3247 | warning (_("Remote reply is too short: %s"), buf); |
c906108c | 3248 | } |
c5aa993b | 3249 | |
b323314b | 3250 | supply_them: |
ad10f812 | 3251 | { |
b323314b AC |
3252 | int i; |
3253 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) | |
ad10f812 | 3254 | { |
ea9c271d | 3255 | struct packet_reg *r = &rsa->regs[i]; |
b323314b AC |
3256 | if (r->in_g_packet) |
3257 | { | |
8ccc1287 AC |
3258 | if (r->offset * 2 >= strlen (buf)) |
3259 | /* A short packet that didn't include the register's | |
3260 | value, this implies that the register is zero (and | |
3261 | not that the register is unavailable). Supply that | |
3262 | zero value. */ | |
3263 | regcache_raw_supply (current_regcache, r->regnum, NULL); | |
3264 | else if (buf[r->offset * 2] == 'x') | |
3265 | { | |
3266 | gdb_assert (r->offset * 2 < strlen (buf)); | |
3267 | /* The register isn't available, mark it as such (at | |
3268 | the same time setting the value to zero). */ | |
3269 | regcache_raw_supply (current_regcache, r->regnum, NULL); | |
3270 | set_register_cached (i, -1); | |
3271 | } | |
3272 | else | |
3273 | regcache_raw_supply (current_regcache, r->regnum, | |
3274 | regs + r->offset); | |
b323314b | 3275 | } |
ad10f812 AC |
3276 | } |
3277 | } | |
c906108c SS |
3278 | } |
3279 | ||
3280 | /* Prepare to store registers. Since we may send them all (using a | |
3281 | 'G' request), we have to read out the ones we don't want to change | |
3282 | first. */ | |
3283 | ||
c5aa993b | 3284 | static void |
fba45db2 | 3285 | remote_prepare_to_store (void) |
c906108c | 3286 | { |
ea9c271d | 3287 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cf0e1e0d | 3288 | int i; |
cfd77fa1 | 3289 | gdb_byte buf[MAX_REGISTER_SIZE]; |
cf0e1e0d | 3290 | |
c906108c | 3291 | /* Make sure the entire registers array is valid. */ |
444abaca | 3292 | switch (remote_protocol_packets[PACKET_P].support) |
5a2468f5 JM |
3293 | { |
3294 | case PACKET_DISABLE: | |
3295 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d DJ |
3296 | /* Make sure all the necessary registers are cached. */ |
3297 | for (i = 0; i < NUM_REGS; i++) | |
ea9c271d DJ |
3298 | if (rsa->regs[i].in_g_packet) |
3299 | regcache_raw_read (current_regcache, rsa->regs[i].regnum, buf); | |
5a2468f5 JM |
3300 | break; |
3301 | case PACKET_ENABLE: | |
3302 | break; | |
3303 | } | |
3304 | } | |
3305 | ||
ad10f812 | 3306 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 3307 | packet was not recognized. */ |
5a2468f5 JM |
3308 | |
3309 | static int | |
ad10f812 | 3310 | store_register_using_P (int regnum) |
5a2468f5 | 3311 | { |
d01949b6 | 3312 | struct remote_state *rs = get_remote_state (); |
ea9c271d DJ |
3313 | struct remote_arch_state *rsa = get_remote_arch_state (); |
3314 | struct packet_reg *reg = packet_reg_from_regnum (rsa, regnum); | |
5a2468f5 | 3315 | /* Try storing a single register. */ |
6d820c5c | 3316 | char *buf = rs->buf; |
cfd77fa1 | 3317 | gdb_byte regp[MAX_REGISTER_SIZE]; |
5a2468f5 | 3318 | char *p; |
5a2468f5 | 3319 | |
ea9c271d | 3320 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 3321 | p = buf + strlen (buf); |
822c9732 | 3322 | regcache_raw_collect (current_regcache, reg->regnum, regp); |
3acba339 | 3323 | bin2hex (regp, p, register_size (current_gdbarch, reg->regnum)); |
6d820c5c | 3324 | remote_send (&rs->buf, &rs->buf_size); |
5a2468f5 JM |
3325 | |
3326 | return buf[0] != '\0'; | |
c906108c SS |
3327 | } |
3328 | ||
5a2468f5 | 3329 | |
23860348 MS |
3330 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
3331 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
3332 | |
3333 | static void | |
ad10f812 | 3334 | remote_store_registers (int regnum) |
c906108c | 3335 | { |
d01949b6 | 3336 | struct remote_state *rs = get_remote_state (); |
ea9c271d | 3337 | struct remote_arch_state *rsa = get_remote_arch_state (); |
cfd77fa1 | 3338 | gdb_byte *regs; |
c906108c SS |
3339 | char *p; |
3340 | ||
39f77062 | 3341 | set_thread (PIDGET (inferior_ptid), 1); |
c906108c | 3342 | |
ad10f812 | 3343 | if (regnum >= 0) |
c906108c | 3344 | { |
444abaca | 3345 | switch (remote_protocol_packets[PACKET_P].support) |
c906108c | 3346 | { |
5a2468f5 JM |
3347 | case PACKET_DISABLE: |
3348 | break; | |
3349 | case PACKET_ENABLE: | |
ad10f812 | 3350 | if (store_register_using_P (regnum)) |
5a2468f5 JM |
3351 | return; |
3352 | else | |
8a3fe4f8 | 3353 | error (_("Protocol error: P packet not recognized by stub")); |
5a2468f5 | 3354 | case PACKET_SUPPORT_UNKNOWN: |
ad10f812 | 3355 | if (store_register_using_P (regnum)) |
5a2468f5 JM |
3356 | { |
3357 | /* The stub recognized the 'P' packet. Remember this. */ | |
444abaca | 3358 | remote_protocol_packets[PACKET_P].support = PACKET_ENABLE; |
5a2468f5 JM |
3359 | return; |
3360 | } | |
3361 | else | |
3362 | { | |
3363 | /* The stub does not support the 'P' packet. Use 'G' | |
3364 | instead, and don't try using 'P' in the future (it | |
3365 | will just waste our time). */ | |
444abaca | 3366 | remote_protocol_packets[PACKET_P].support = PACKET_DISABLE; |
5a2468f5 JM |
3367 | break; |
3368 | } | |
c906108c | 3369 | } |
c906108c SS |
3370 | } |
3371 | ||
193cb69f AC |
3372 | /* Extract all the registers in the regcache copying them into a |
3373 | local buffer. */ | |
3374 | { | |
b323314b | 3375 | int i; |
ea9c271d DJ |
3376 | regs = alloca (rsa->sizeof_g_packet); |
3377 | memset (regs, 0, rsa->sizeof_g_packet); | |
b323314b | 3378 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) |
193cb69f | 3379 | { |
ea9c271d | 3380 | struct packet_reg *r = &rsa->regs[i]; |
b323314b | 3381 | if (r->in_g_packet) |
822c9732 | 3382 | regcache_raw_collect (current_regcache, r->regnum, regs + r->offset); |
193cb69f AC |
3383 | } |
3384 | } | |
c906108c SS |
3385 | |
3386 | /* Command describes registers byte by byte, | |
3387 | each byte encoded as two hex characters. */ | |
6d820c5c | 3388 | p = rs->buf; |
193cb69f | 3389 | *p++ = 'G'; |
c906108c | 3390 | /* remote_prepare_to_store insures that register_bytes_found gets set. */ |
30559e10 | 3391 | bin2hex (regs, p, register_bytes_found); |
6d820c5c | 3392 | remote_send (&rs->buf, &rs->buf_size); |
c906108c | 3393 | } |
c906108c SS |
3394 | \f |
3395 | ||
3396 | /* Return the number of hex digits in num. */ | |
3397 | ||
3398 | static int | |
fba45db2 | 3399 | hexnumlen (ULONGEST num) |
c906108c SS |
3400 | { |
3401 | int i; | |
3402 | ||
3403 | for (i = 0; num != 0; i++) | |
3404 | num >>= 4; | |
3405 | ||
3406 | return max (i, 1); | |
3407 | } | |
3408 | ||
2df3850c | 3409 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
3410 | |
3411 | static int | |
fba45db2 | 3412 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 3413 | { |
c906108c | 3414 | int len = hexnumlen (num); |
2df3850c JM |
3415 | return hexnumnstr (buf, num, len); |
3416 | } | |
3417 | ||
c906108c | 3418 | |
2df3850c | 3419 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 3420 | |
2df3850c | 3421 | static int |
fba45db2 | 3422 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
3423 | { |
3424 | int i; | |
3425 | ||
3426 | buf[width] = '\0'; | |
3427 | ||
3428 | for (i = width - 1; i >= 0; i--) | |
c906108c | 3429 | { |
c5aa993b | 3430 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
3431 | num >>= 4; |
3432 | } | |
3433 | ||
2df3850c | 3434 | return width; |
c906108c SS |
3435 | } |
3436 | ||
23860348 | 3437 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
3438 | |
3439 | static CORE_ADDR | |
fba45db2 | 3440 | remote_address_masked (CORE_ADDR addr) |
c906108c SS |
3441 | { |
3442 | if (remote_address_size > 0 | |
3443 | && remote_address_size < (sizeof (ULONGEST) * 8)) | |
3444 | { | |
3445 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 3446 | in a ULONGEST variable. */ |
c906108c SS |
3447 | ULONGEST mask = 1; |
3448 | mask = (mask << remote_address_size) - 1; | |
3449 | addr &= mask; | |
3450 | } | |
3451 | return addr; | |
3452 | } | |
3453 | ||
3454 | /* Determine whether the remote target supports binary downloading. | |
3455 | This is accomplished by sending a no-op memory write of zero length | |
3456 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
3457 | the whole packet, since many stubs strip the eighth bit and |
3458 | subsequently compute a wrong checksum, which causes real havoc with | |
3459 | remote_write_bytes. | |
7a292a7a | 3460 | |
96baa820 JM |
3461 | NOTE: This can still lose if the serial line is not eight-bit |
3462 | clean. In cases like this, the user should clear "remote | |
23860348 | 3463 | X-packet". */ |
96baa820 | 3464 | |
c906108c | 3465 | static void |
fba45db2 | 3466 | check_binary_download (CORE_ADDR addr) |
c906108c | 3467 | { |
d01949b6 | 3468 | struct remote_state *rs = get_remote_state (); |
24b06219 | 3469 | |
444abaca | 3470 | switch (remote_protocol_packets[PACKET_X].support) |
c906108c | 3471 | { |
96baa820 JM |
3472 | case PACKET_DISABLE: |
3473 | break; | |
3474 | case PACKET_ENABLE: | |
3475 | break; | |
3476 | case PACKET_SUPPORT_UNKNOWN: | |
3477 | { | |
6d820c5c | 3478 | char *buf = rs->buf; |
96baa820 | 3479 | char *p; |
802188a7 | 3480 | |
96baa820 JM |
3481 | p = buf; |
3482 | *p++ = 'X'; | |
3483 | p += hexnumstr (p, (ULONGEST) addr); | |
3484 | *p++ = ','; | |
3485 | p += hexnumstr (p, (ULONGEST) 0); | |
3486 | *p++ = ':'; | |
3487 | *p = '\0'; | |
802188a7 | 3488 | |
96baa820 | 3489 | putpkt_binary (buf, (int) (p - buf)); |
6d820c5c | 3490 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 3491 | |
96baa820 JM |
3492 | if (buf[0] == '\0') |
3493 | { | |
3494 | if (remote_debug) | |
3495 | fprintf_unfiltered (gdb_stdlog, | |
3496 | "binary downloading NOT suppported by target\n"); | |
444abaca | 3497 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
3498 | } |
3499 | else | |
3500 | { | |
3501 | if (remote_debug) | |
3502 | fprintf_unfiltered (gdb_stdlog, | |
3503 | "binary downloading suppported by target\n"); | |
444abaca | 3504 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
3505 | } |
3506 | break; | |
3507 | } | |
c906108c SS |
3508 | } |
3509 | } | |
3510 | ||
3511 | /* Write memory data directly to the remote machine. | |
3512 | This does not inform the data cache; the data cache uses this. | |
3513 | MEMADDR is the address in the remote memory space. | |
3514 | MYADDR is the address of the buffer in our space. | |
3515 | LEN is the number of bytes. | |
3516 | ||
917317f4 | 3517 | Returns number of bytes transferred, or 0 (setting errno) for |
23860348 | 3518 | error. Only transfer a single packet. */ |
c906108c | 3519 | |
449092f6 | 3520 | int |
cfd77fa1 | 3521 | remote_write_bytes (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
c906108c | 3522 | { |
6d820c5c | 3523 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 DJ |
3524 | char *buf; |
3525 | char *p; | |
3526 | char *plen; | |
917317f4 JM |
3527 | int plenlen; |
3528 | int todo; | |
3529 | int nr_bytes; | |
a257b5bb | 3530 | int payload_size; |
cfd77fa1 | 3531 | char *payload_start; |
c906108c | 3532 | |
a257b5bb | 3533 | /* Verify that the target can support a binary download. */ |
c906108c SS |
3534 | check_binary_download (memaddr); |
3535 | ||
3de11b2e NS |
3536 | payload_size = get_memory_write_packet_size (); |
3537 | ||
6d820c5c DJ |
3538 | /* The packet buffer will be large enough for the payload; |
3539 | get_memory_packet_size ensures this. */ | |
3540 | buf = rs->buf; | |
c906108c | 3541 | |
a257b5bb | 3542 | /* Compute the size of the actual payload by subtracting out the |
3de11b2e NS |
3543 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". |
3544 | */ | |
3545 | payload_size -= strlen ("$M,:#NN"); | |
3546 | payload_size -= hexnumlen (memaddr); | |
c906108c | 3547 | |
a257b5bb | 3548 | /* Construct the packet header: "[MX]<memaddr>,<len>:". */ |
917317f4 | 3549 | |
a257b5bb | 3550 | /* Append "[XM]". Compute a best guess of the number of bytes |
23860348 | 3551 | actually transfered. */ |
a257b5bb | 3552 | p = buf; |
444abaca | 3553 | switch (remote_protocol_packets[PACKET_X].support) |
c906108c | 3554 | { |
917317f4 JM |
3555 | case PACKET_ENABLE: |
3556 | *p++ = 'X'; | |
23860348 | 3557 | /* Best guess at number of bytes that will fit. */ |
a257b5bb | 3558 | todo = min (len, payload_size); |
3de11b2e NS |
3559 | payload_size -= hexnumlen (todo); |
3560 | todo = min (todo, payload_size); | |
917317f4 JM |
3561 | break; |
3562 | case PACKET_DISABLE: | |
3563 | *p++ = 'M'; | |
23860348 | 3564 | /* Num bytes that will fit. */ |
a257b5bb | 3565 | todo = min (len, payload_size / 2); |
3de11b2e NS |
3566 | payload_size -= hexnumlen (todo); |
3567 | todo = min (todo, payload_size / 2); | |
917317f4 JM |
3568 | break; |
3569 | case PACKET_SUPPORT_UNKNOWN: | |
8e65ff28 | 3570 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3571 | _("remote_write_bytes: bad internal state")); |
7f7e9482 | 3572 | default: |
e2e0b3e5 | 3573 | internal_error (__FILE__, __LINE__, _("bad switch")); |
917317f4 | 3574 | } |
3de11b2e NS |
3575 | if (todo <= 0) |
3576 | internal_error (__FILE__, __LINE__, | |
3577 | _("minumum packet size too small to write data")); | |
802188a7 | 3578 | |
a257b5bb | 3579 | /* Append "<memaddr>". */ |
917317f4 JM |
3580 | memaddr = remote_address_masked (memaddr); |
3581 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb AC |
3582 | |
3583 | /* Append ",". */ | |
917317f4 | 3584 | *p++ = ','; |
802188a7 | 3585 | |
a257b5bb AC |
3586 | /* Append <len>. Retain the location/size of <len>. It may need to |
3587 | be adjusted once the packet body has been created. */ | |
917317f4 JM |
3588 | plen = p; |
3589 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
3590 | p += plenlen; | |
a257b5bb AC |
3591 | |
3592 | /* Append ":". */ | |
917317f4 JM |
3593 | *p++ = ':'; |
3594 | *p = '\0'; | |
802188a7 | 3595 | |
a257b5bb AC |
3596 | /* Append the packet body. */ |
3597 | payload_start = p; | |
444abaca | 3598 | switch (remote_protocol_packets[PACKET_X].support) |
917317f4 JM |
3599 | { |
3600 | case PACKET_ENABLE: | |
3601 | /* Binary mode. Send target system values byte by byte, in | |
3602 | increasing byte addresses. Only escape certain critical | |
3603 | characters. */ | |
3604 | for (nr_bytes = 0; | |
a257b5bb | 3605 | (nr_bytes < todo) && (p - payload_start) < payload_size; |
917317f4 | 3606 | nr_bytes++) |
c906108c | 3607 | { |
917317f4 JM |
3608 | switch (myaddr[nr_bytes] & 0xff) |
3609 | { | |
3610 | case '$': | |
3611 | case '#': | |
3612 | case 0x7d: | |
23860348 | 3613 | /* These must be escaped. */ |
917317f4 JM |
3614 | *p++ = 0x7d; |
3615 | *p++ = (myaddr[nr_bytes] & 0xff) ^ 0x20; | |
3616 | break; | |
3617 | default: | |
3618 | *p++ = myaddr[nr_bytes] & 0xff; | |
3619 | break; | |
3620 | } | |
c906108c | 3621 | } |
917317f4 | 3622 | if (nr_bytes < todo) |
c906108c | 3623 | { |
802188a7 | 3624 | /* Escape chars have filled up the buffer prematurely, |
917317f4 JM |
3625 | and we have actually sent fewer bytes than planned. |
3626 | Fix-up the length field of the packet. Use the same | |
3627 | number of characters as before. */ | |
917317f4 JM |
3628 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); |
3629 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 3630 | } |
917317f4 JM |
3631 | break; |
3632 | case PACKET_DISABLE: | |
3633 | /* Normal mode: Send target system values byte by byte, in | |
3634 | increasing byte addresses. Each byte is encoded as a two hex | |
3635 | value. */ | |
2644f393 | 3636 | nr_bytes = bin2hex (myaddr, p, todo); |
aa6c0017 | 3637 | p += 2 * nr_bytes; |
917317f4 JM |
3638 | break; |
3639 | case PACKET_SUPPORT_UNKNOWN: | |
8e65ff28 | 3640 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3641 | _("remote_write_bytes: bad internal state")); |
7f7e9482 | 3642 | default: |
e2e0b3e5 | 3643 | internal_error (__FILE__, __LINE__, _("bad switch")); |
c906108c | 3644 | } |
802188a7 | 3645 | |
917317f4 | 3646 | putpkt_binary (buf, (int) (p - buf)); |
6d820c5c | 3647 | getpkt (&rs->buf, &rs->buf_size, 0); |
802188a7 | 3648 | |
917317f4 JM |
3649 | if (buf[0] == 'E') |
3650 | { | |
3651 | /* There is no correspondance between what the remote protocol | |
3652 | uses for errors and errno codes. We would like a cleaner way | |
3653 | of representing errors (big enough to include errno codes, | |
3654 | bfd_error codes, and others). But for now just return EIO. */ | |
3655 | errno = EIO; | |
3656 | return 0; | |
3657 | } | |
802188a7 | 3658 | |
23860348 MS |
3659 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send |
3660 | fewer bytes than we'd planned. */ | |
917317f4 | 3661 | return nr_bytes; |
c906108c SS |
3662 | } |
3663 | ||
3664 | /* Read memory data directly from the remote machine. | |
3665 | This does not use the data cache; the data cache uses this. | |
3666 | MEMADDR is the address in the remote memory space. | |
3667 | MYADDR is the address of the buffer in our space. | |
3668 | LEN is the number of bytes. | |
3669 | ||
3670 | Returns number of bytes transferred, or 0 for error. */ | |
3671 | ||
917317f4 JM |
3672 | /* NOTE: cagney/1999-10-18: This function (and its siblings in other |
3673 | remote targets) shouldn't attempt to read the entire buffer. | |
3674 | Instead it should read a single packet worth of data and then | |
3675 | return the byte size of that packet to the caller. The caller (its | |
3676 | caller and its callers caller ;-) already contains code for | |
23860348 | 3677 | handling partial reads. */ |
917317f4 | 3678 | |
449092f6 | 3679 | int |
cfd77fa1 | 3680 | remote_read_bytes (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
c906108c | 3681 | { |
6d820c5c | 3682 | struct remote_state *rs = get_remote_state (); |
11cf8741 | 3683 | char *buf; |
23860348 | 3684 | int max_buf_size; /* Max size of packet output buffer. */ |
c906108c SS |
3685 | int origlen; |
3686 | ||
11cf8741 | 3687 | max_buf_size = get_memory_read_packet_size (); |
6d820c5c DJ |
3688 | /* The packet buffer will be large enough for the payload; |
3689 | get_memory_packet_size ensures this. */ | |
3690 | buf = rs->buf; | |
c906108c SS |
3691 | |
3692 | origlen = len; | |
3693 | while (len > 0) | |
3694 | { | |
c906108c SS |
3695 | char *p; |
3696 | int todo; | |
3697 | int i; | |
3698 | ||
c5aa993b | 3699 | todo = min (len, max_buf_size / 2); /* num bytes that will fit */ |
c906108c SS |
3700 | |
3701 | /* construct "m"<memaddr>","<len>" */ | |
3702 | /* sprintf (buf, "m%lx,%x", (unsigned long) memaddr, todo); */ | |
3703 | memaddr = remote_address_masked (memaddr); | |
3704 | p = buf; | |
3705 | *p++ = 'm'; | |
3706 | p += hexnumstr (p, (ULONGEST) memaddr); | |
3707 | *p++ = ','; | |
3708 | p += hexnumstr (p, (ULONGEST) todo); | |
3709 | *p = '\0'; | |
3710 | ||
3711 | putpkt (buf); | |
6d820c5c | 3712 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 3713 | |
66504d44 MS |
3714 | if (buf[0] == 'E' |
3715 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
3716 | && buf[3] == '\0') | |
c906108c | 3717 | { |
23860348 MS |
3718 | /* There is no correspondance between what the remote |
3719 | protocol uses for errors and errno codes. We would like | |
3720 | a cleaner way of representing errors (big enough to | |
3721 | include errno codes, bfd_error codes, and others). But | |
3722 | for now just return EIO. */ | |
c906108c SS |
3723 | errno = EIO; |
3724 | return 0; | |
3725 | } | |
3726 | ||
c5aa993b JM |
3727 | /* Reply describes memory byte by byte, |
3728 | each byte encoded as two hex characters. */ | |
c906108c SS |
3729 | |
3730 | p = buf; | |
30559e10 | 3731 | if ((i = hex2bin (p, myaddr, todo)) < todo) |
c906108c | 3732 | { |
30559e10 | 3733 | /* Reply is short. This means that we were able to read |
23860348 | 3734 | only part of what we wanted to. */ |
30559e10 | 3735 | return i + (origlen - len); |
c906108c SS |
3736 | } |
3737 | myaddr += todo; | |
3738 | memaddr += todo; | |
3739 | len -= todo; | |
3740 | } | |
3741 | return origlen; | |
3742 | } | |
3743 | \f | |
3744 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
23860348 MS |
3745 | transferring to or from debugger address BUFFER. Write to inferior |
3746 | if SHOULD_WRITE is nonzero. Returns length of data written or | |
3747 | read; 0 for error. TARGET is unused. */ | |
392a587b | 3748 | |
c906108c | 3749 | static int |
961cb7b5 | 3750 | remote_xfer_memory (CORE_ADDR mem_addr, gdb_byte *buffer, int mem_len, |
0a65a603 | 3751 | int should_write, struct mem_attrib *attrib, |
29e57380 | 3752 | struct target_ops *target) |
c906108c | 3753 | { |
392a587b JM |
3754 | CORE_ADDR targ_addr; |
3755 | int targ_len; | |
4930751a C |
3756 | int res; |
3757 | ||
f6684c31 | 3758 | /* Should this be the selected frame? */ |
23860348 MS |
3759 | gdbarch_remote_translate_xfer_address (current_gdbarch, |
3760 | current_regcache, | |
f6684c31 AC |
3761 | mem_addr, mem_len, |
3762 | &targ_addr, &targ_len); | |
392a587b | 3763 | if (targ_len <= 0) |
c906108c | 3764 | return 0; |
c906108c | 3765 | |
4930751a C |
3766 | if (should_write) |
3767 | res = remote_write_bytes (targ_addr, buffer, targ_len); | |
3768 | else | |
3769 | res = remote_read_bytes (targ_addr, buffer, targ_len); | |
3770 | ||
3771 | return res; | |
c906108c SS |
3772 | } |
3773 | ||
c906108c | 3774 | static void |
fba45db2 | 3775 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
3776 | { |
3777 | puts_filtered ("Debugging a target over a serial line.\n"); | |
3778 | } | |
3779 | \f | |
3780 | /* Stuff for dealing with the packets which are part of this protocol. | |
3781 | See comment at top of file for details. */ | |
3782 | ||
23860348 MS |
3783 | /* Read a single character from the remote end, masking it down to 7 |
3784 | bits. */ | |
c906108c SS |
3785 | |
3786 | static int | |
fba45db2 | 3787 | readchar (int timeout) |
c906108c SS |
3788 | { |
3789 | int ch; | |
3790 | ||
2cd58942 | 3791 | ch = serial_readchar (remote_desc, timeout); |
c906108c | 3792 | |
2acceee2 JM |
3793 | if (ch >= 0) |
3794 | return (ch & 0x7f); | |
3795 | ||
3796 | switch ((enum serial_rc) ch) | |
c906108c SS |
3797 | { |
3798 | case SERIAL_EOF: | |
2acceee2 | 3799 | target_mourn_inferior (); |
8a3fe4f8 | 3800 | error (_("Remote connection closed")); |
2acceee2 | 3801 | /* no return */ |
c906108c | 3802 | case SERIAL_ERROR: |
e2e0b3e5 | 3803 | perror_with_name (_("Remote communication error")); |
2acceee2 | 3804 | /* no return */ |
c906108c | 3805 | case SERIAL_TIMEOUT: |
2acceee2 | 3806 | break; |
c906108c | 3807 | } |
2acceee2 | 3808 | return ch; |
c906108c SS |
3809 | } |
3810 | ||
6d820c5c DJ |
3811 | /* Send the command in *BUF to the remote machine, and read the reply |
3812 | into *BUF. Report an error if we get an error reply. Resize | |
3813 | *BUF using xrealloc if necessary to hold the result, and update | |
3814 | *SIZEOF_BUF. */ | |
c906108c SS |
3815 | |
3816 | static void | |
6d820c5c DJ |
3817 | remote_send (char **buf, |
3818 | long *sizeof_buf) | |
c906108c | 3819 | { |
6d820c5c | 3820 | putpkt (*buf); |
c2d11a7d | 3821 | getpkt (buf, sizeof_buf, 0); |
c906108c | 3822 | |
6d820c5c DJ |
3823 | if ((*buf)[0] == 'E') |
3824 | error (_("Remote failure reply: %s"), *buf); | |
c906108c SS |
3825 | } |
3826 | ||
3827 | /* Display a null-terminated packet on stdout, for debugging, using C | |
3828 | string notation. */ | |
3829 | ||
3830 | static void | |
fba45db2 | 3831 | print_packet (char *buf) |
c906108c SS |
3832 | { |
3833 | puts_filtered ("\""); | |
43e526b9 | 3834 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
3835 | puts_filtered ("\""); |
3836 | } | |
3837 | ||
3838 | int | |
fba45db2 | 3839 | putpkt (char *buf) |
c906108c SS |
3840 | { |
3841 | return putpkt_binary (buf, strlen (buf)); | |
3842 | } | |
3843 | ||
3844 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 3845 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 3846 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
3847 | and for a possible /0 if we are debugging (remote_debug) and want |
3848 | to print the sent packet as a string. */ | |
c906108c SS |
3849 | |
3850 | static int | |
fba45db2 | 3851 | putpkt_binary (char *buf, int cnt) |
c906108c SS |
3852 | { |
3853 | int i; | |
3854 | unsigned char csum = 0; | |
11cf8741 | 3855 | char *buf2 = alloca (cnt + 6); |
085dd6e6 | 3856 | |
c906108c SS |
3857 | int ch; |
3858 | int tcount = 0; | |
3859 | char *p; | |
3860 | ||
3861 | /* Copy the packet into buffer BUF2, encapsulating it | |
3862 | and giving it a checksum. */ | |
3863 | ||
c906108c SS |
3864 | p = buf2; |
3865 | *p++ = '$'; | |
3866 | ||
3867 | for (i = 0; i < cnt; i++) | |
3868 | { | |
3869 | csum += buf[i]; | |
3870 | *p++ = buf[i]; | |
3871 | } | |
3872 | *p++ = '#'; | |
3873 | *p++ = tohex ((csum >> 4) & 0xf); | |
3874 | *p++ = tohex (csum & 0xf); | |
3875 | ||
3876 | /* Send it over and over until we get a positive ack. */ | |
3877 | ||
3878 | while (1) | |
3879 | { | |
3880 | int started_error_output = 0; | |
3881 | ||
3882 | if (remote_debug) | |
3883 | { | |
3884 | *p = '\0'; | |
43e526b9 JM |
3885 | fprintf_unfiltered (gdb_stdlog, "Sending packet: "); |
3886 | fputstrn_unfiltered (buf2, p - buf2, 0, gdb_stdlog); | |
d4f3574e | 3887 | fprintf_unfiltered (gdb_stdlog, "..."); |
0f71a2f6 | 3888 | gdb_flush (gdb_stdlog); |
c906108c | 3889 | } |
2cd58942 | 3890 | if (serial_write (remote_desc, buf2, p - buf2)) |
e2e0b3e5 | 3891 | perror_with_name (_("putpkt: write failed")); |
c906108c | 3892 | |
23860348 | 3893 | /* Read until either a timeout occurs (-2) or '+' is read. */ |
c906108c SS |
3894 | while (1) |
3895 | { | |
3896 | ch = readchar (remote_timeout); | |
3897 | ||
c5aa993b | 3898 | if (remote_debug) |
c906108c SS |
3899 | { |
3900 | switch (ch) | |
3901 | { | |
3902 | case '+': | |
1216fa2c | 3903 | case '-': |
c906108c SS |
3904 | case SERIAL_TIMEOUT: |
3905 | case '$': | |
3906 | if (started_error_output) | |
3907 | { | |
3908 | putchar_unfiltered ('\n'); | |
3909 | started_error_output = 0; | |
3910 | } | |
3911 | } | |
3912 | } | |
3913 | ||
3914 | switch (ch) | |
3915 | { | |
3916 | case '+': | |
3917 | if (remote_debug) | |
0f71a2f6 | 3918 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 3919 | return 1; |
1216fa2c AC |
3920 | case '-': |
3921 | if (remote_debug) | |
3922 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
c906108c | 3923 | case SERIAL_TIMEOUT: |
c5aa993b | 3924 | tcount++; |
c906108c SS |
3925 | if (tcount > 3) |
3926 | return 0; | |
23860348 | 3927 | break; /* Retransmit buffer. */ |
c906108c SS |
3928 | case '$': |
3929 | { | |
40e3f985 | 3930 | if (remote_debug) |
23860348 MS |
3931 | fprintf_unfiltered (gdb_stdlog, |
3932 | "Packet instead of Ack, ignoring it\n"); | |
d6f7abdf AC |
3933 | /* It's probably an old response sent because an ACK |
3934 | was lost. Gobble up the packet and ack it so it | |
3935 | doesn't get retransmitted when we resend this | |
3936 | packet. */ | |
6d820c5c | 3937 | skip_frame (); |
d6f7abdf | 3938 | serial_write (remote_desc, "+", 1); |
23860348 | 3939 | continue; /* Now, go look for +. */ |
c906108c SS |
3940 | } |
3941 | default: | |
3942 | if (remote_debug) | |
3943 | { | |
3944 | if (!started_error_output) | |
3945 | { | |
3946 | started_error_output = 1; | |
0f71a2f6 | 3947 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 3948 | } |
0f71a2f6 | 3949 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
3950 | } |
3951 | continue; | |
3952 | } | |
23860348 | 3953 | break; /* Here to retransmit. */ |
c906108c SS |
3954 | } |
3955 | ||
3956 | #if 0 | |
3957 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
3958 | able to get out next time we call QUIT, without anything as |
3959 | violent as interrupt_query. If we want to provide a way out of | |
3960 | here without getting to the next QUIT, it should be based on | |
3961 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
3962 | if (quit_flag) |
3963 | { | |
3964 | quit_flag = 0; | |
3965 | interrupt_query (); | |
3966 | } | |
3967 | #endif | |
3968 | } | |
3969 | } | |
3970 | ||
6d820c5c DJ |
3971 | /* Come here after finding the start of a frame when we expected an |
3972 | ack. Do our best to discard the rest of this packet. */ | |
3973 | ||
3974 | static void | |
3975 | skip_frame (void) | |
3976 | { | |
3977 | int c; | |
3978 | ||
3979 | while (1) | |
3980 | { | |
3981 | c = readchar (remote_timeout); | |
3982 | switch (c) | |
3983 | { | |
3984 | case SERIAL_TIMEOUT: | |
3985 | /* Nothing we can do. */ | |
3986 | return; | |
3987 | case '#': | |
3988 | /* Discard the two bytes of checksum and stop. */ | |
3989 | c = readchar (remote_timeout); | |
3990 | if (c >= 0) | |
3991 | c = readchar (remote_timeout); | |
3992 | ||
3993 | return; | |
3994 | case '*': /* Run length encoding. */ | |
3995 | /* Discard the repeat count. */ | |
3996 | c = readchar (remote_timeout); | |
3997 | if (c < 0) | |
3998 | return; | |
3999 | break; | |
4000 | default: | |
4001 | /* A regular character. */ | |
4002 | break; | |
4003 | } | |
4004 | } | |
4005 | } | |
4006 | ||
c906108c | 4007 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
4008 | into *BUF, verifying the checksum, length, and handling run-length |
4009 | compression. NUL terminate the buffer. If there is not enough room, | |
4010 | expand *BUF using xrealloc. | |
c906108c | 4011 | |
c2d11a7d JM |
4012 | Returns -1 on error, number of characters in buffer (ignoring the |
4013 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 4014 | SERIAL status indications). */ |
c2d11a7d JM |
4015 | |
4016 | static long | |
6d820c5c DJ |
4017 | read_frame (char **buf_p, |
4018 | long *sizeof_buf) | |
c906108c SS |
4019 | { |
4020 | unsigned char csum; | |
c2d11a7d | 4021 | long bc; |
c906108c | 4022 | int c; |
6d820c5c | 4023 | char *buf = *buf_p; |
c906108c SS |
4024 | |
4025 | csum = 0; | |
c2d11a7d | 4026 | bc = 0; |
c906108c SS |
4027 | |
4028 | while (1) | |
4029 | { | |
4030 | c = readchar (remote_timeout); | |
c906108c SS |
4031 | switch (c) |
4032 | { | |
4033 | case SERIAL_TIMEOUT: | |
4034 | if (remote_debug) | |
0f71a2f6 | 4035 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 4036 | return -1; |
c906108c SS |
4037 | case '$': |
4038 | if (remote_debug) | |
0f71a2f6 JM |
4039 | fputs_filtered ("Saw new packet start in middle of old one\n", |
4040 | gdb_stdlog); | |
23860348 | 4041 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
4042 | case '#': |
4043 | { | |
4044 | unsigned char pktcsum; | |
e1b09194 AC |
4045 | int check_0 = 0; |
4046 | int check_1 = 0; | |
c906108c | 4047 | |
c2d11a7d | 4048 | buf[bc] = '\0'; |
c906108c | 4049 | |
e1b09194 AC |
4050 | check_0 = readchar (remote_timeout); |
4051 | if (check_0 >= 0) | |
4052 | check_1 = readchar (remote_timeout); | |
802188a7 | 4053 | |
e1b09194 AC |
4054 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
4055 | { | |
4056 | if (remote_debug) | |
23860348 MS |
4057 | fputs_filtered ("Timeout in checksum, retrying\n", |
4058 | gdb_stdlog); | |
e1b09194 AC |
4059 | return -1; |
4060 | } | |
4061 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
4062 | { |
4063 | if (remote_debug) | |
23860348 MS |
4064 | fputs_filtered ("Communication error in checksum\n", |
4065 | gdb_stdlog); | |
40e3f985 FN |
4066 | return -1; |
4067 | } | |
c906108c | 4068 | |
e1b09194 | 4069 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 4070 | if (csum == pktcsum) |
c2d11a7d | 4071 | return bc; |
c906108c | 4072 | |
c5aa993b | 4073 | if (remote_debug) |
c906108c | 4074 | { |
0f71a2f6 | 4075 | fprintf_filtered (gdb_stdlog, |
c5aa993b | 4076 | "Bad checksum, sentsum=0x%x, csum=0x%x, buf=", |
0f71a2f6 JM |
4077 | pktcsum, csum); |
4078 | fputs_filtered (buf, gdb_stdlog); | |
4079 | fputs_filtered ("\n", gdb_stdlog); | |
c906108c | 4080 | } |
c2d11a7d | 4081 | /* Number of characters in buffer ignoring trailing |
23860348 | 4082 | NULL. */ |
c2d11a7d | 4083 | return -1; |
c906108c | 4084 | } |
23860348 | 4085 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
4086 | { |
4087 | int repeat; | |
4088 | csum += c; | |
c906108c | 4089 | |
b4501125 AC |
4090 | c = readchar (remote_timeout); |
4091 | csum += c; | |
23860348 | 4092 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 4093 | |
23860348 | 4094 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 4095 | |
6d820c5c | 4096 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 4097 | { |
6d820c5c DJ |
4098 | if (bc + repeat - 1 >= *sizeof_buf - 1) |
4099 | { | |
4100 | /* Make some more room in the buffer. */ | |
4101 | *sizeof_buf += repeat; | |
4102 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
4103 | buf = *buf_p; | |
4104 | } | |
4105 | ||
c2d11a7d JM |
4106 | memset (&buf[bc], buf[bc - 1], repeat); |
4107 | bc += repeat; | |
c2c6d25f JM |
4108 | continue; |
4109 | } | |
4110 | ||
c2d11a7d | 4111 | buf[bc] = '\0'; |
6d820c5c | 4112 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 4113 | return -1; |
c2c6d25f | 4114 | } |
c906108c | 4115 | default: |
6d820c5c | 4116 | if (bc >= *sizeof_buf - 1) |
c906108c | 4117 | { |
6d820c5c DJ |
4118 | /* Make some more room in the buffer. */ |
4119 | *sizeof_buf *= 2; | |
4120 | *buf_p = xrealloc (*buf_p, *sizeof_buf); | |
4121 | buf = *buf_p; | |
c906108c SS |
4122 | } |
4123 | ||
6d820c5c DJ |
4124 | buf[bc++] = c; |
4125 | csum += c; | |
4126 | continue; | |
c906108c SS |
4127 | } |
4128 | } | |
4129 | } | |
4130 | ||
4131 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
4132 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
4133 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
4134 | rather than timing out; this is used (in synchronous mode) to wait | |
4135 | for a target that is is executing user code to stop. */ | |
d9fcf2fb JM |
4136 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
4137 | don't have to change all the calls to getpkt to deal with the | |
4138 | return value, because at the moment I don't know what the right | |
23860348 | 4139 | thing to do it for those. */ |
c906108c | 4140 | void |
6d820c5c DJ |
4141 | getpkt (char **buf, |
4142 | long *sizeof_buf, | |
c2d11a7d | 4143 | int forever) |
d9fcf2fb JM |
4144 | { |
4145 | int timed_out; | |
4146 | ||
4147 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
4148 | } | |
4149 | ||
4150 | ||
4151 | /* Read a packet from the remote machine, with error checking, and | |
6d820c5c DJ |
4152 | store it in *BUF. Resize *BUF using xrealloc if necessary to hold |
4153 | the result, and update *SIZEOF_BUF. If FOREVER, wait forever | |
4154 | rather than timing out; this is used (in synchronous mode) to wait | |
4155 | for a target that is is executing user code to stop. If FOREVER == | |
4156 | 0, this function is allowed to time out gracefully and return an | |
4157 | indication of this to the caller. */ | |
3172dc30 | 4158 | static int |
6d820c5c | 4159 | getpkt_sane (char **buf, long *sizeof_buf, int forever) |
c906108c SS |
4160 | { |
4161 | int c; | |
4162 | int tries; | |
4163 | int timeout; | |
4164 | int val; | |
4165 | ||
6d820c5c | 4166 | strcpy (*buf, "timeout"); |
c906108c SS |
4167 | |
4168 | if (forever) | |
4169 | { | |
c906108c | 4170 | timeout = watchdog > 0 ? watchdog : -1; |
c906108c SS |
4171 | } |
4172 | ||
4173 | else | |
4174 | timeout = remote_timeout; | |
4175 | ||
4176 | #define MAX_TRIES 3 | |
4177 | ||
4178 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
4179 | { | |
4180 | /* This can loop forever if the remote side sends us characters | |
23860348 MS |
4181 | continuously, but if it pauses, we'll get a zero from |
4182 | readchar because of timeout. Then we'll count that as a | |
4183 | retry. */ | |
c906108c | 4184 | |
23860348 MS |
4185 | /* Note that we will only wait forever prior to the start of a |
4186 | packet. After that, we expect characters to arrive at a | |
4187 | brisk pace. They should show up within remote_timeout | |
4188 | intervals. */ | |
c906108c SS |
4189 | |
4190 | do | |
4191 | { | |
4192 | c = readchar (timeout); | |
4193 | ||
4194 | if (c == SERIAL_TIMEOUT) | |
4195 | { | |
23860348 | 4196 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 4197 | { |
2acceee2 | 4198 | QUIT; |
c906108c | 4199 | target_mourn_inferior (); |
8a3fe4f8 | 4200 | error (_("Watchdog has expired. Target detached.")); |
c906108c | 4201 | } |
c906108c | 4202 | if (remote_debug) |
0f71a2f6 | 4203 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c SS |
4204 | goto retry; |
4205 | } | |
4206 | } | |
4207 | while (c != '$'); | |
4208 | ||
4209 | /* We've found the start of a packet, now collect the data. */ | |
4210 | ||
c2d11a7d | 4211 | val = read_frame (buf, sizeof_buf); |
c906108c | 4212 | |
c2d11a7d | 4213 | if (val >= 0) |
c906108c SS |
4214 | { |
4215 | if (remote_debug) | |
43e526b9 JM |
4216 | { |
4217 | fprintf_unfiltered (gdb_stdlog, "Packet received: "); | |
6d820c5c | 4218 | fputstr_unfiltered (*buf, 0, gdb_stdlog); |
43e526b9 JM |
4219 | fprintf_unfiltered (gdb_stdlog, "\n"); |
4220 | } | |
2cd58942 | 4221 | serial_write (remote_desc, "+", 1); |
d9fcf2fb | 4222 | return 0; |
c906108c SS |
4223 | } |
4224 | ||
4225 | /* Try the whole thing again. */ | |
4226 | retry: | |
2cd58942 | 4227 | serial_write (remote_desc, "-", 1); |
c906108c SS |
4228 | } |
4229 | ||
23860348 MS |
4230 | /* We have tried hard enough, and just can't receive the packet. |
4231 | Give up. */ | |
c906108c | 4232 | |
a3f17187 | 4233 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); |
2cd58942 | 4234 | serial_write (remote_desc, "+", 1); |
d9fcf2fb | 4235 | return 1; |
c906108c SS |
4236 | } |
4237 | \f | |
4238 | static void | |
fba45db2 | 4239 | remote_kill (void) |
c906108c SS |
4240 | { |
4241 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4242 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4243 | if (kill_kludge) | |
4244 | { | |
4245 | kill_kludge = 0; | |
4246 | target_mourn_inferior (); | |
4247 | return; | |
4248 | } | |
4249 | ||
4250 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
4251 | speaking terms with the remote system. */ | |
c5aa993b | 4252 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
c906108c SS |
4253 | |
4254 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4255 | we do or not. For the existing stubs, kill is a noop. */ | |
4256 | target_mourn_inferior (); | |
4257 | } | |
4258 | ||
23860348 | 4259 | /* Async version of remote_kill. */ |
43ff13b4 | 4260 | static void |
fba45db2 | 4261 | remote_async_kill (void) |
43ff13b4 | 4262 | { |
23860348 | 4263 | /* Unregister the file descriptor from the event loop. */ |
ed9a39eb | 4264 | if (target_is_async_p ()) |
2cd58942 | 4265 | serial_async (remote_desc, NULL, 0); |
43ff13b4 JM |
4266 | |
4267 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4268 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4269 | if (kill_kludge) | |
4270 | { | |
4271 | kill_kludge = 0; | |
4272 | target_mourn_inferior (); | |
4273 | return; | |
4274 | } | |
4275 | ||
23860348 MS |
4276 | /* Use catch_errors so the user can quit from gdb even when we |
4277 | aren't on speaking terms with the remote system. */ | |
c5aa993b | 4278 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
4279 | |
4280 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4281 | we do or not. For the existing stubs, kill is a noop. */ | |
4282 | target_mourn_inferior (); | |
4283 | } | |
4284 | ||
c906108c | 4285 | static void |
fba45db2 | 4286 | remote_mourn (void) |
c906108c SS |
4287 | { |
4288 | remote_mourn_1 (&remote_ops); | |
4289 | } | |
4290 | ||
53a5351d | 4291 | static void |
fba45db2 | 4292 | remote_async_mourn (void) |
53a5351d JM |
4293 | { |
4294 | remote_mourn_1 (&remote_async_ops); | |
4295 | } | |
4296 | ||
c906108c | 4297 | static void |
fba45db2 | 4298 | extended_remote_mourn (void) |
c906108c SS |
4299 | { |
4300 | /* We do _not_ want to mourn the target like this; this will | |
4301 | remove the extended remote target from the target stack, | |
802188a7 | 4302 | and the next time the user says "run" it'll fail. |
c906108c SS |
4303 | |
4304 | FIXME: What is the right thing to do here? */ | |
4305 | #if 0 | |
4306 | remote_mourn_1 (&extended_remote_ops); | |
4307 | #endif | |
4308 | } | |
4309 | ||
4310 | /* Worker function for remote_mourn. */ | |
4311 | static void | |
fba45db2 | 4312 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
4313 | { |
4314 | unpush_target (target); | |
4315 | generic_mourn_inferior (); | |
4316 | } | |
4317 | ||
4318 | /* In the extended protocol we want to be able to do things like | |
4319 | "run" and have them basically work as expected. So we need | |
802188a7 | 4320 | a special create_inferior function. |
c906108c SS |
4321 | |
4322 | FIXME: One day add support for changing the exec file | |
4323 | we're debugging, arguments and an environment. */ | |
4324 | ||
4325 | static void | |
23860348 MS |
4326 | extended_remote_create_inferior (char *exec_file, char *args, |
4327 | char **env, int from_tty) | |
c906108c SS |
4328 | { |
4329 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4330 | the remote server. */ | |
4331 | remove_breakpoints (); | |
4332 | ||
4333 | /* Now restart the remote server. */ | |
4334 | extended_remote_restart (); | |
4335 | ||
4336 | /* Now put the breakpoints back in. This way we're safe if the | |
4337 | restart function works via a unix fork on the remote side. */ | |
4338 | insert_breakpoints (); | |
4339 | ||
4340 | /* Clean up from the last time we were running. */ | |
4341 | clear_proceed_status (); | |
c906108c SS |
4342 | } |
4343 | ||
23860348 | 4344 | /* Async version of extended_remote_create_inferior. */ |
43ff13b4 | 4345 | static void |
23860348 MS |
4346 | extended_remote_async_create_inferior (char *exec_file, char *args, |
4347 | char **env, int from_tty) | |
43ff13b4 JM |
4348 | { |
4349 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4350 | the remote server. */ | |
4351 | remove_breakpoints (); | |
4352 | ||
4353 | /* If running asynchronously, register the target file descriptor | |
23860348 | 4354 | with the event loop. */ |
362646f5 | 4355 | if (target_can_async_p ()) |
2acceee2 | 4356 | target_async (inferior_event_handler, 0); |
43ff13b4 JM |
4357 | |
4358 | /* Now restart the remote server. */ | |
4359 | extended_remote_restart (); | |
4360 | ||
4361 | /* Now put the breakpoints back in. This way we're safe if the | |
4362 | restart function works via a unix fork on the remote side. */ | |
4363 | insert_breakpoints (); | |
4364 | ||
4365 | /* Clean up from the last time we were running. */ | |
4366 | clear_proceed_status (); | |
43ff13b4 | 4367 | } |
c906108c | 4368 | \f |
c5aa993b | 4369 | |
aaab4dba | 4370 | /* On some machines, e.g. 68k, we may use a different breakpoint |
7fec2c59 AC |
4371 | instruction than other targets; in those use |
4372 | DEPRECATED_REMOTE_BREAKPOINT instead of just BREAKPOINT_FROM_PC. | |
4373 | Also, bi-endian targets may define | |
4374 | DEPRECATED_LITTLE_REMOTE_BREAKPOINT and | |
4375 | DEPRECATED_BIG_REMOTE_BREAKPOINT. If none of these are defined, we | |
4376 | just call the standard routines that are in mem-break.c. */ | |
4377 | ||
4378 | /* NOTE: cagney/2003-06-08: This is silly. A remote and simulator | |
4379 | target should use an identical BREAKPOINT_FROM_PC. As for native, | |
4380 | the ARCH-OS-tdep.c code can override the default. */ | |
4381 | ||
4382 | #if defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) && !defined(DEPRECATED_REMOTE_BREAKPOINT) | |
4383 | #define DEPRECATED_REMOTE_BREAKPOINT | |
c906108c SS |
4384 | #endif |
4385 | ||
7fec2c59 | 4386 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c SS |
4387 | |
4388 | /* If the target isn't bi-endian, just pretend it is. */ | |
7fec2c59 AC |
4389 | #if !defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && !defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) |
4390 | #define DEPRECATED_LITTLE_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT | |
4391 | #define DEPRECATED_BIG_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT | |
c906108c SS |
4392 | #endif |
4393 | ||
7fec2c59 AC |
4394 | static unsigned char big_break_insn[] = DEPRECATED_BIG_REMOTE_BREAKPOINT; |
4395 | static unsigned char little_break_insn[] = DEPRECATED_LITTLE_REMOTE_BREAKPOINT; | |
c906108c | 4396 | |
7fec2c59 | 4397 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c | 4398 | |
8181d85f DJ |
4399 | /* Insert a breakpoint. On targets that have software breakpoint |
4400 | support, we ask the remote target to do the work; on targets | |
4401 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c SS |
4402 | |
4403 | static int | |
8181d85f | 4404 | remote_insert_breakpoint (struct bp_target_info *bp_tgt) |
c906108c | 4405 | { |
8181d85f | 4406 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 4407 | struct remote_state *rs = get_remote_state (); |
7fec2c59 | 4408 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c | 4409 | int val; |
802188a7 | 4410 | #endif |
96baa820 | 4411 | |
d471ea57 AC |
4412 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
4413 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
4414 | fails, and the user has explicitly requested the Z support then | |
23860348 | 4415 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 4416 | |
444abaca | 4417 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 4418 | { |
6d820c5c | 4419 | char *p = rs->buf; |
802188a7 | 4420 | |
96baa820 JM |
4421 | *(p++) = 'Z'; |
4422 | *(p++) = '0'; | |
4423 | *(p++) = ','; | |
8181d85f DJ |
4424 | BREAKPOINT_FROM_PC (&bp_tgt->placed_address, &bp_tgt->placed_size); |
4425 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); | |
4426 | p += hexnumstr (p, addr); | |
4427 | sprintf (p, ",%d", bp_tgt->placed_size); | |
802188a7 | 4428 | |
6d820c5c DJ |
4429 | putpkt (rs->buf); |
4430 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 4431 | |
6d820c5c | 4432 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 4433 | { |
d471ea57 AC |
4434 | case PACKET_ERROR: |
4435 | return -1; | |
4436 | case PACKET_OK: | |
4437 | return 0; | |
4438 | case PACKET_UNKNOWN: | |
4439 | break; | |
96baa820 JM |
4440 | } |
4441 | } | |
c906108c | 4442 | |
802188a7 | 4443 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
8181d85f DJ |
4444 | bp_tgt->placed_size = bp_tgt->shadow_len = sizeof big_break_insn; |
4445 | val = target_read_memory (addr, bp_tgt->shadow_contents, bp_tgt->shadow_len); | |
c906108c SS |
4446 | |
4447 | if (val == 0) | |
4448 | { | |
d7449b42 | 4449 | if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) |
c906108c SS |
4450 | val = target_write_memory (addr, (char *) big_break_insn, |
4451 | sizeof big_break_insn); | |
4452 | else | |
4453 | val = target_write_memory (addr, (char *) little_break_insn, | |
4454 | sizeof little_break_insn); | |
4455 | } | |
4456 | ||
4457 | return val; | |
4458 | #else | |
8181d85f | 4459 | return memory_insert_breakpoint (bp_tgt); |
7fec2c59 | 4460 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c SS |
4461 | } |
4462 | ||
4463 | static int | |
8181d85f | 4464 | remote_remove_breakpoint (struct bp_target_info *bp_tgt) |
c906108c | 4465 | { |
8181d85f | 4466 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 4467 | struct remote_state *rs = get_remote_state (); |
96baa820 JM |
4468 | int bp_size; |
4469 | ||
444abaca | 4470 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 4471 | { |
6d820c5c | 4472 | char *p = rs->buf; |
802188a7 | 4473 | |
96baa820 JM |
4474 | *(p++) = 'z'; |
4475 | *(p++) = '0'; | |
4476 | *(p++) = ','; | |
4477 | ||
8181d85f DJ |
4478 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
4479 | p += hexnumstr (p, addr); | |
4480 | sprintf (p, ",%d", bp_tgt->placed_size); | |
802188a7 | 4481 | |
6d820c5c DJ |
4482 | putpkt (rs->buf); |
4483 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 4484 | |
6d820c5c | 4485 | return (rs->buf[0] == 'E'); |
96baa820 JM |
4486 | } |
4487 | ||
7fec2c59 | 4488 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
8181d85f DJ |
4489 | return target_write_memory (bp_tgt->placed_address, bp_tgt->shadow_contents, |
4490 | bp_tgt->shadow_len); | |
c906108c | 4491 | #else |
8181d85f | 4492 | return memory_remove_breakpoint (bp_tgt); |
7fec2c59 | 4493 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c SS |
4494 | } |
4495 | ||
d471ea57 AC |
4496 | static int |
4497 | watchpoint_to_Z_packet (int type) | |
4498 | { | |
4499 | switch (type) | |
4500 | { | |
4501 | case hw_write: | |
bb858e6a | 4502 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
4503 | break; |
4504 | case hw_read: | |
bb858e6a | 4505 | return Z_PACKET_READ_WP; |
d471ea57 AC |
4506 | break; |
4507 | case hw_access: | |
bb858e6a | 4508 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
4509 | break; |
4510 | default: | |
8e65ff28 | 4511 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4512 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
4513 | } |
4514 | } | |
4515 | ||
3c3bea1c | 4516 | static int |
fba45db2 | 4517 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 4518 | { |
d01949b6 | 4519 | struct remote_state *rs = get_remote_state (); |
e514a9d6 | 4520 | char *p; |
d471ea57 | 4521 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 4522 | |
444abaca | 4523 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
5cffb350 | 4524 | return -1; |
802188a7 | 4525 | |
6d820c5c DJ |
4526 | sprintf (rs->buf, "Z%x,", packet); |
4527 | p = strchr (rs->buf, '\0'); | |
96baa820 JM |
4528 | addr = remote_address_masked (addr); |
4529 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4530 | sprintf (p, ",%x", len); |
802188a7 | 4531 | |
6d820c5c DJ |
4532 | putpkt (rs->buf); |
4533 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 4534 | |
6d820c5c | 4535 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
4536 | { |
4537 | case PACKET_ERROR: | |
4538 | case PACKET_UNKNOWN: | |
4539 | return -1; | |
4540 | case PACKET_OK: | |
4541 | return 0; | |
4542 | } | |
8e65ff28 | 4543 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4544 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
4545 | } |
4546 | ||
d471ea57 | 4547 | |
3c3bea1c | 4548 | static int |
fba45db2 | 4549 | remote_remove_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 4550 | { |
d01949b6 | 4551 | struct remote_state *rs = get_remote_state (); |
e514a9d6 | 4552 | char *p; |
d471ea57 AC |
4553 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
4554 | ||
444abaca | 4555 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
5cffb350 | 4556 | return -1; |
802188a7 | 4557 | |
6d820c5c DJ |
4558 | sprintf (rs->buf, "z%x,", packet); |
4559 | p = strchr (rs->buf, '\0'); | |
96baa820 JM |
4560 | addr = remote_address_masked (addr); |
4561 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4562 | sprintf (p, ",%x", len); |
6d820c5c DJ |
4563 | putpkt (rs->buf); |
4564 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 4565 | |
6d820c5c | 4566 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
4567 | { |
4568 | case PACKET_ERROR: | |
4569 | case PACKET_UNKNOWN: | |
4570 | return -1; | |
4571 | case PACKET_OK: | |
4572 | return 0; | |
4573 | } | |
8e65ff28 | 4574 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4575 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
4576 | } |
4577 | ||
3c3bea1c | 4578 | |
501eef12 AC |
4579 | int remote_hw_watchpoint_limit = -1; |
4580 | int remote_hw_breakpoint_limit = -1; | |
d471ea57 | 4581 | |
b9362cc7 | 4582 | static int |
3c3bea1c | 4583 | remote_check_watch_resources (int type, int cnt, int ot) |
96baa820 | 4584 | { |
3c3bea1c GS |
4585 | if (type == bp_hardware_breakpoint) |
4586 | { | |
4587 | if (remote_hw_breakpoint_limit == 0) | |
4588 | return 0; | |
501eef12 AC |
4589 | else if (remote_hw_breakpoint_limit < 0) |
4590 | return 1; | |
3c3bea1c GS |
4591 | else if (cnt <= remote_hw_breakpoint_limit) |
4592 | return 1; | |
4593 | } | |
4594 | else | |
4595 | { | |
4596 | if (remote_hw_watchpoint_limit == 0) | |
4597 | return 0; | |
501eef12 AC |
4598 | else if (remote_hw_watchpoint_limit < 0) |
4599 | return 1; | |
3c3bea1c GS |
4600 | else if (ot) |
4601 | return -1; | |
4602 | else if (cnt <= remote_hw_watchpoint_limit) | |
4603 | return 1; | |
4604 | } | |
4605 | return -1; | |
4606 | } | |
4607 | ||
b9362cc7 | 4608 | static int |
3c3bea1c GS |
4609 | remote_stopped_by_watchpoint (void) |
4610 | { | |
4611 | return remote_stopped_by_watchpoint_p; | |
4612 | } | |
4613 | ||
7270d8f2 OF |
4614 | extern int stepped_after_stopped_by_watchpoint; |
4615 | ||
4aa7a7f5 JJ |
4616 | static int |
4617 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 4618 | { |
4aa7a7f5 | 4619 | int rc = 0; |
7270d8f2 OF |
4620 | if (remote_stopped_by_watchpoint () |
4621 | || stepped_after_stopped_by_watchpoint) | |
4aa7a7f5 JJ |
4622 | { |
4623 | *addr_p = remote_watch_data_address; | |
4624 | rc = 1; | |
4625 | } | |
4626 | ||
4627 | return rc; | |
3c3bea1c GS |
4628 | } |
4629 | ||
4630 | ||
4631 | static int | |
8181d85f | 4632 | remote_insert_hw_breakpoint (struct bp_target_info *bp_tgt) |
3c3bea1c | 4633 | { |
8181d85f | 4634 | CORE_ADDR addr; |
d01949b6 | 4635 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 4636 | char *p = rs->buf; |
802188a7 | 4637 | |
c8189ed1 | 4638 | /* The length field should be set to the size of a breakpoint |
8181d85f | 4639 | instruction, even though we aren't inserting one ourselves. */ |
c8189ed1 | 4640 | |
8181d85f | 4641 | BREAKPOINT_FROM_PC (&bp_tgt->placed_address, &bp_tgt->placed_size); |
3c3bea1c | 4642 | |
444abaca | 4643 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 NS |
4644 | return -1; |
4645 | ||
96baa820 JM |
4646 | *(p++) = 'Z'; |
4647 | *(p++) = '1'; | |
4648 | *(p++) = ','; | |
802188a7 | 4649 | |
8181d85f | 4650 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 4651 | p += hexnumstr (p, (ULONGEST) addr); |
8181d85f | 4652 | sprintf (p, ",%x", bp_tgt->placed_size); |
96baa820 | 4653 | |
6d820c5c DJ |
4654 | putpkt (rs->buf); |
4655 | getpkt (&rs->buf, &rs->buf_size, 0); | |
96baa820 | 4656 | |
6d820c5c | 4657 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
4658 | { |
4659 | case PACKET_ERROR: | |
4660 | case PACKET_UNKNOWN: | |
4661 | return -1; | |
4662 | case PACKET_OK: | |
4663 | return 0; | |
4664 | } | |
8e65ff28 | 4665 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4666 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
4667 | } |
4668 | ||
d471ea57 | 4669 | |
802188a7 | 4670 | static int |
8181d85f | 4671 | remote_remove_hw_breakpoint (struct bp_target_info *bp_tgt) |
96baa820 | 4672 | { |
8181d85f | 4673 | CORE_ADDR addr; |
d01949b6 | 4674 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 4675 | char *p = rs->buf; |
c8189ed1 | 4676 | |
444abaca | 4677 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
5cffb350 | 4678 | return -1; |
802188a7 | 4679 | |
96baa820 JM |
4680 | *(p++) = 'z'; |
4681 | *(p++) = '1'; | |
4682 | *(p++) = ','; | |
802188a7 | 4683 | |
8181d85f | 4684 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 4685 | p += hexnumstr (p, (ULONGEST) addr); |
8181d85f | 4686 | sprintf (p, ",%x", bp_tgt->placed_size); |
96baa820 | 4687 | |
6d820c5c DJ |
4688 | putpkt (rs->buf); |
4689 | getpkt (&rs->buf, &rs->buf_size, 0); | |
802188a7 | 4690 | |
6d820c5c | 4691 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
4692 | { |
4693 | case PACKET_ERROR: | |
4694 | case PACKET_UNKNOWN: | |
4695 | return -1; | |
4696 | case PACKET_OK: | |
4697 | return 0; | |
4698 | } | |
8e65ff28 | 4699 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4700 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 4701 | } |
96baa820 | 4702 | |
c906108c SS |
4703 | /* Some targets are only capable of doing downloads, and afterwards |
4704 | they switch to the remote serial protocol. This function provides | |
4705 | a clean way to get from the download target to the remote target. | |
4706 | It's basically just a wrapper so that we don't have to expose any | |
4707 | of the internal workings of remote.c. | |
4708 | ||
4709 | Prior to calling this routine, you should shutdown the current | |
4710 | target code, else you will get the "A program is being debugged | |
4711 | already..." message. Usually a call to pop_target() suffices. */ | |
4712 | ||
4713 | void | |
fba45db2 | 4714 | push_remote_target (char *name, int from_tty) |
c906108c | 4715 | { |
a3f17187 | 4716 | printf_filtered (_("Switching to remote protocol\n")); |
c906108c SS |
4717 | remote_open (name, from_tty); |
4718 | } | |
4719 | ||
23860348 | 4720 | /* Table used by the crc32 function to calcuate the checksum. */ |
c906108c | 4721 | |
c5aa993b JM |
4722 | static unsigned long crc32_table[256] = |
4723 | {0, 0}; | |
c906108c SS |
4724 | |
4725 | static unsigned long | |
fba45db2 | 4726 | crc32 (unsigned char *buf, int len, unsigned int crc) |
c906108c | 4727 | { |
c5aa993b | 4728 | if (!crc32_table[1]) |
c906108c | 4729 | { |
23860348 | 4730 | /* Initialize the CRC table and the decoding table. */ |
c906108c SS |
4731 | int i, j; |
4732 | unsigned int c; | |
4733 | ||
4734 | for (i = 0; i < 256; i++) | |
c5aa993b JM |
4735 | { |
4736 | for (c = i << 24, j = 8; j > 0; --j) | |
4737 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
4738 | crc32_table[i] = c; | |
4739 | } | |
c906108c SS |
4740 | } |
4741 | ||
4742 | while (len--) | |
4743 | { | |
4744 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |
4745 | buf++; | |
4746 | } | |
4747 | return crc; | |
4748 | } | |
4749 | ||
4750 | /* compare-sections command | |
4751 | ||
4752 | With no arguments, compares each loadable section in the exec bfd | |
4753 | with the same memory range on the target, and reports mismatches. | |
4754 | Useful for verifying the image on the target against the exec file. | |
4755 | Depends on the target understanding the new "qCRC:" request. */ | |
4756 | ||
e514a9d6 JM |
4757 | /* FIXME: cagney/1999-10-26: This command should be broken down into a |
4758 | target method (target verify memory) and generic version of the | |
4759 | actual command. This will allow other high-level code (especially | |
23860348 | 4760 | generic_load()) to make use of this target functionality. */ |
e514a9d6 | 4761 | |
c906108c | 4762 | static void |
fba45db2 | 4763 | compare_sections_command (char *args, int from_tty) |
c906108c | 4764 | { |
d01949b6 | 4765 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4766 | asection *s; |
4767 | unsigned long host_crc, target_crc; | |
4768 | extern bfd *exec_bfd; | |
4769 | struct cleanup *old_chain; | |
085dd6e6 JM |
4770 | char *tmp; |
4771 | char *sectdata; | |
ce359b09 | 4772 | const char *sectname; |
c906108c SS |
4773 | bfd_size_type size; |
4774 | bfd_vma lma; | |
4775 | int matched = 0; | |
4776 | int mismatched = 0; | |
4777 | ||
4778 | if (!exec_bfd) | |
8a3fe4f8 | 4779 | error (_("command cannot be used without an exec file")); |
c906108c SS |
4780 | if (!current_target.to_shortname || |
4781 | strcmp (current_target.to_shortname, "remote") != 0) | |
8a3fe4f8 | 4782 | error (_("command can only be used with remote target")); |
c906108c | 4783 | |
c5aa993b | 4784 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
4785 | { |
4786 | if (!(s->flags & SEC_LOAD)) | |
c5aa993b | 4787 | continue; /* skip non-loadable section */ |
c906108c | 4788 | |
2c500098 | 4789 | size = bfd_get_section_size (s); |
c906108c | 4790 | if (size == 0) |
c5aa993b | 4791 | continue; /* skip zero-length section */ |
c906108c | 4792 | |
ce359b09 | 4793 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 4794 | if (args && strcmp (args, sectname) != 0) |
c5aa993b | 4795 | continue; /* not the section selected by user */ |
c906108c | 4796 | |
c5aa993b | 4797 | matched = 1; /* do this section */ |
c906108c | 4798 | lma = s->lma; |
23860348 | 4799 | /* FIXME: assumes lma can fit into long. */ |
ea9c271d | 4800 | xsnprintf (rs->buf, get_remote_packet_size (), "qCRC:%lx,%lx", |
ecbc58df | 4801 | (long) lma, (long) size); |
6d820c5c | 4802 | putpkt (rs->buf); |
c906108c | 4803 | |
23860348 MS |
4804 | /* Be clever; compute the host_crc before waiting for target |
4805 | reply. */ | |
c906108c | 4806 | sectdata = xmalloc (size); |
b8c9b27d | 4807 | old_chain = make_cleanup (xfree, sectdata); |
c906108c SS |
4808 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
4809 | host_crc = crc32 ((unsigned char *) sectdata, size, 0xffffffff); | |
4810 | ||
6d820c5c DJ |
4811 | getpkt (&rs->buf, &rs->buf_size, 0); |
4812 | if (rs->buf[0] == 'E') | |
8a3fe4f8 | 4813 | error (_("target memory fault, section %s, range 0x%s -- 0x%s"), |
823ca731 | 4814 | sectname, paddr (lma), paddr (lma + size)); |
6d820c5c | 4815 | if (rs->buf[0] != 'C') |
8a3fe4f8 | 4816 | error (_("remote target does not support this operation")); |
c906108c | 4817 | |
6d820c5c | 4818 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) |
c906108c SS |
4819 | target_crc = target_crc * 16 + fromhex (*tmp); |
4820 | ||
d4f3574e SS |
4821 | printf_filtered ("Section %s, range 0x%s -- 0x%s: ", |
4822 | sectname, paddr (lma), paddr (lma + size)); | |
c906108c SS |
4823 | if (host_crc == target_crc) |
4824 | printf_filtered ("matched.\n"); | |
4825 | else | |
c5aa993b JM |
4826 | { |
4827 | printf_filtered ("MIS-MATCHED!\n"); | |
4828 | mismatched++; | |
4829 | } | |
c906108c SS |
4830 | |
4831 | do_cleanups (old_chain); | |
4832 | } | |
4833 | if (mismatched > 0) | |
8a3fe4f8 AC |
4834 | warning (_("One or more sections of the remote executable does not match\n\ |
4835 | the loaded file\n")); | |
c906108c | 4836 | if (args && !matched) |
a3f17187 | 4837 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
4838 | } |
4839 | ||
1e3ff5ad | 4840 | static LONGEST |
4b8a223f | 4841 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
961cb7b5 MK |
4842 | const char *annex, gdb_byte *readbuf, |
4843 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
c906108c | 4844 | { |
d01949b6 | 4845 | struct remote_state *rs = get_remote_state (); |
c906108c | 4846 | int i; |
6d820c5c | 4847 | char *p2; |
1e3ff5ad | 4848 | char query_type; |
c906108c | 4849 | |
21e3b9b9 DJ |
4850 | /* Handle memory using remote_xfer_memory. */ |
4851 | if (object == TARGET_OBJECT_MEMORY) | |
4852 | { | |
4853 | int xfered; | |
4854 | errno = 0; | |
4855 | ||
4856 | if (writebuf != NULL) | |
4857 | { | |
4858 | void *buffer = xmalloc (len); | |
4859 | struct cleanup *cleanup = make_cleanup (xfree, buffer); | |
4860 | memcpy (buffer, writebuf, len); | |
4861 | xfered = remote_xfer_memory (offset, buffer, len, 1, NULL, ops); | |
4862 | do_cleanups (cleanup); | |
4863 | } | |
4864 | else | |
4865 | xfered = remote_xfer_memory (offset, readbuf, len, 0, NULL, ops); | |
4866 | ||
4867 | if (xfered > 0) | |
4868 | return xfered; | |
4869 | else if (xfered == 0 && errno == 0) | |
4870 | return 0; | |
4871 | else | |
4872 | return -1; | |
4873 | } | |
4874 | ||
4b8a223f AC |
4875 | /* Only handle reads. */ |
4876 | if (writebuf != NULL || readbuf == NULL) | |
4877 | return -1; | |
4878 | ||
1e3ff5ad AC |
4879 | /* Map pre-existing objects onto letters. DO NOT do this for new |
4880 | objects!!! Instead specify new query packets. */ | |
4881 | switch (object) | |
c906108c | 4882 | { |
1e3ff5ad AC |
4883 | case TARGET_OBJECT_KOD: |
4884 | query_type = 'K'; | |
4885 | break; | |
4886 | case TARGET_OBJECT_AVR: | |
4887 | query_type = 'R'; | |
4888 | break; | |
802188a7 RM |
4889 | |
4890 | case TARGET_OBJECT_AUXV: | |
444abaca | 4891 | if (remote_protocol_packets[PACKET_qPart_auxv].support != PACKET_DISABLE) |
802188a7 RM |
4892 | { |
4893 | unsigned int total = 0; | |
4894 | while (len > 0) | |
4895 | { | |
ea9c271d DJ |
4896 | LONGEST n = min ((get_remote_packet_size () - 2) / 2, len); |
4897 | snprintf (rs->buf, get_remote_packet_size (), | |
802188a7 RM |
4898 | "qPart:auxv:read::%s,%s", |
4899 | phex_nz (offset, sizeof offset), | |
4900 | phex_nz (n, sizeof n)); | |
6d820c5c | 4901 | i = putpkt (rs->buf); |
802188a7 RM |
4902 | if (i < 0) |
4903 | return total > 0 ? total : i; | |
6d820c5c DJ |
4904 | rs->buf[0] = '\0'; |
4905 | getpkt (&rs->buf, &rs->buf_size, 0); | |
4906 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qPart_auxv]) | |
444abaca | 4907 | != PACKET_OK) |
802188a7 | 4908 | return total > 0 ? total : -1; |
6d820c5c | 4909 | if (strcmp (rs->buf, "OK") == 0) |
802188a7 RM |
4910 | break; /* Got EOF indicator. */ |
4911 | /* Got some data. */ | |
6d820c5c | 4912 | i = hex2bin (rs->buf, readbuf, len); |
802188a7 RM |
4913 | if (i > 0) |
4914 | { | |
4915 | readbuf = (void *) ((char *) readbuf + i); | |
4916 | offset += i; | |
4917 | len -= i; | |
4918 | total += i; | |
4919 | } | |
4920 | } | |
4921 | return total; | |
4922 | } | |
4923 | return -1; | |
4924 | ||
1e3ff5ad | 4925 | default: |
c906108c SS |
4926 | return -1; |
4927 | } | |
4928 | ||
4b8a223f | 4929 | /* Note: a zero OFFSET and LEN can be used to query the minimum |
1e3ff5ad | 4930 | buffer size. */ |
4b8a223f | 4931 | if (offset == 0 && len == 0) |
ea9c271d DJ |
4932 | return (get_remote_packet_size ()); |
4933 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not | |
24b06219 | 4934 | large enough let the caller deal with it. */ |
ea9c271d | 4935 | if (len < get_remote_packet_size ()) |
1e3ff5ad | 4936 | return -1; |
ea9c271d | 4937 | len = get_remote_packet_size (); |
1e3ff5ad | 4938 | |
23860348 | 4939 | /* Except for querying the minimum buffer size, target must be open. */ |
c5aa993b | 4940 | if (!remote_desc) |
8a3fe4f8 | 4941 | error (_("remote query is only available after target open")); |
c906108c | 4942 | |
1e3ff5ad | 4943 | gdb_assert (annex != NULL); |
4b8a223f | 4944 | gdb_assert (readbuf != NULL); |
c906108c | 4945 | |
6d820c5c | 4946 | p2 = rs->buf; |
c906108c SS |
4947 | *p2++ = 'q'; |
4948 | *p2++ = query_type; | |
4949 | ||
23860348 MS |
4950 | /* We used one buffer char for the remote protocol q command and |
4951 | another for the query type. As the remote protocol encapsulation | |
4952 | uses 4 chars plus one extra in case we are debugging | |
4953 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
4954 | string. */ | |
c906108c | 4955 | i = 0; |
ea9c271d | 4956 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 4957 | { |
1e3ff5ad AC |
4958 | /* Bad caller may have sent forbidden characters. */ |
4959 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
4960 | *p2++ = annex[i]; | |
c906108c SS |
4961 | i++; |
4962 | } | |
1e3ff5ad AC |
4963 | *p2 = '\0'; |
4964 | gdb_assert (annex[i] == '\0'); | |
c906108c | 4965 | |
6d820c5c | 4966 | i = putpkt (rs->buf); |
c5aa993b JM |
4967 | if (i < 0) |
4968 | return i; | |
c906108c | 4969 | |
6d820c5c DJ |
4970 | getpkt (&rs->buf, &rs->buf_size, 0); |
4971 | strcpy ((char *) readbuf, rs->buf); | |
c906108c | 4972 | |
cfd77fa1 | 4973 | return strlen ((char *) readbuf); |
c906108c SS |
4974 | } |
4975 | ||
96baa820 JM |
4976 | static void |
4977 | remote_rcmd (char *command, | |
d9fcf2fb | 4978 | struct ui_file *outbuf) |
96baa820 | 4979 | { |
d01949b6 | 4980 | struct remote_state *rs = get_remote_state (); |
6d820c5c | 4981 | char *buf = rs->buf; |
96baa820 JM |
4982 | char *p = buf; |
4983 | ||
4984 | if (!remote_desc) | |
8a3fe4f8 | 4985 | error (_("remote rcmd is only available after target open")); |
96baa820 | 4986 | |
23860348 | 4987 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
4988 | if (command == NULL) |
4989 | command = ""; | |
4990 | ||
23860348 | 4991 | /* The query prefix. */ |
96baa820 JM |
4992 | strcpy (buf, "qRcmd,"); |
4993 | p = strchr (buf, '\0'); | |
4994 | ||
ea9c271d | 4995 | if ((strlen (buf) + strlen (command) * 2 + 8/*misc*/) > get_remote_packet_size ()) |
8a3fe4f8 | 4996 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 4997 | |
23860348 | 4998 | /* Encode the actual command. */ |
cfd77fa1 | 4999 | bin2hex ((gdb_byte *) command, p, 0); |
96baa820 | 5000 | |
6d820c5c | 5001 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 5002 | error (_("Communication problem with target.")); |
96baa820 JM |
5003 | |
5004 | /* get/display the response */ | |
5005 | while (1) | |
5006 | { | |
23860348 | 5007 | /* XXX - see also tracepoint.c:remote_get_noisy_reply(). */ |
96baa820 | 5008 | buf[0] = '\0'; |
6d820c5c | 5009 | getpkt (&rs->buf, &rs->buf_size, 0); |
96baa820 | 5010 | if (buf[0] == '\0') |
8a3fe4f8 | 5011 | error (_("Target does not support this command.")); |
96baa820 JM |
5012 | if (buf[0] == 'O' && buf[1] != 'K') |
5013 | { | |
23860348 | 5014 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
5015 | continue; |
5016 | } | |
5017 | if (strcmp (buf, "OK") == 0) | |
5018 | break; | |
7be570e7 JM |
5019 | if (strlen (buf) == 3 && buf[0] == 'E' |
5020 | && isdigit (buf[1]) && isdigit (buf[2])) | |
5021 | { | |
8a3fe4f8 | 5022 | error (_("Protocol error with Rcmd")); |
7be570e7 | 5023 | } |
96baa820 JM |
5024 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
5025 | { | |
5026 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
5027 | fputc_unfiltered (c, outbuf); | |
5028 | } | |
5029 | break; | |
5030 | } | |
5031 | } | |
5032 | ||
c906108c | 5033 | static void |
fba45db2 | 5034 | packet_command (char *args, int from_tty) |
c906108c | 5035 | { |
d01949b6 | 5036 | struct remote_state *rs = get_remote_state (); |
c906108c | 5037 | |
c5aa993b | 5038 | if (!remote_desc) |
8a3fe4f8 | 5039 | error (_("command can only be used with remote target")); |
c906108c | 5040 | |
c5aa993b | 5041 | if (!args) |
8a3fe4f8 | 5042 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
5043 | |
5044 | puts_filtered ("sending: "); | |
5045 | print_packet (args); | |
5046 | puts_filtered ("\n"); | |
5047 | putpkt (args); | |
5048 | ||
6d820c5c | 5049 | getpkt (&rs->buf, &rs->buf_size, 0); |
c906108c | 5050 | puts_filtered ("received: "); |
6d820c5c | 5051 | print_packet (rs->buf); |
c906108c SS |
5052 | puts_filtered ("\n"); |
5053 | } | |
5054 | ||
5055 | #if 0 | |
23860348 | 5056 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 5057 | |
a14ed312 | 5058 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 5059 | |
a14ed312 | 5060 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 5061 | |
a14ed312 | 5062 | static void threadalive_test (char *cmd, int tty); |
c906108c | 5063 | |
a14ed312 | 5064 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 5065 | |
23860348 | 5066 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 5067 | |
a14ed312 | 5068 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 5069 | |
23860348 | 5070 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 5071 | |
a14ed312 | 5072 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 5073 | |
a14ed312 | 5074 | static void init_remote_threadtests (void); |
c906108c | 5075 | |
23860348 | 5076 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
5077 | |
5078 | static void | |
fba45db2 | 5079 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
5080 | { |
5081 | int sample_thread = SAMPLE_THREAD; | |
5082 | ||
a3f17187 | 5083 | printf_filtered (_("Remote threadset test\n")); |
c906108c SS |
5084 | set_thread (sample_thread, 1); |
5085 | } | |
5086 | ||
5087 | ||
5088 | static void | |
fba45db2 | 5089 | threadalive_test (char *cmd, int tty) |
c906108c SS |
5090 | { |
5091 | int sample_thread = SAMPLE_THREAD; | |
5092 | ||
39f77062 | 5093 | if (remote_thread_alive (pid_to_ptid (sample_thread))) |
c906108c SS |
5094 | printf_filtered ("PASS: Thread alive test\n"); |
5095 | else | |
5096 | printf_filtered ("FAIL: Thread alive test\n"); | |
5097 | } | |
5098 | ||
23860348 | 5099 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
5100 | |
5101 | void | |
fba45db2 | 5102 | output_threadid (char *title, threadref *ref) |
c906108c SS |
5103 | { |
5104 | char hexid[20]; | |
5105 | ||
23860348 | 5106 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
5107 | hexid[16] = 0; |
5108 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
5109 | } | |
5110 | ||
5111 | static void | |
fba45db2 | 5112 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
5113 | { |
5114 | int startflag = 1; | |
5115 | threadref nextthread; | |
5116 | int done, result_count; | |
5117 | threadref threadlist[3]; | |
5118 | ||
5119 | printf_filtered ("Remote Threadlist test\n"); | |
5120 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
5121 | &result_count, &threadlist[0])) | |
5122 | printf_filtered ("FAIL: threadlist test\n"); | |
5123 | else | |
5124 | { | |
5125 | threadref *scan = threadlist; | |
5126 | threadref *limit = scan + result_count; | |
5127 | ||
5128 | while (scan < limit) | |
5129 | output_threadid (" thread ", scan++); | |
5130 | } | |
5131 | } | |
5132 | ||
5133 | void | |
fba45db2 | 5134 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
5135 | { |
5136 | output_threadid ("Threadid: ", &info->threadid); | |
5137 | printf_filtered ("Name: %s\n ", info->shortname); | |
5138 | printf_filtered ("State: %s\n", info->display); | |
5139 | printf_filtered ("other: %s\n\n", info->more_display); | |
5140 | } | |
5141 | ||
5142 | int | |
fba45db2 | 5143 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
5144 | { |
5145 | int result; | |
5146 | int set; | |
5147 | struct gdb_ext_thread_info threadinfo; | |
5148 | ||
5149 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
5150 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
5151 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
5152 | display_thread_info (&threadinfo); | |
5153 | return result; | |
5154 | } | |
5155 | ||
5156 | static void | |
fba45db2 | 5157 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
5158 | { |
5159 | int athread = SAMPLE_THREAD; | |
5160 | threadref thread; | |
5161 | int set; | |
5162 | ||
5163 | int_to_threadref (&thread, athread); | |
5164 | printf_filtered ("Remote Threadinfo test\n"); | |
5165 | if (!get_and_display_threadinfo (&thread)) | |
5166 | printf_filtered ("FAIL cannot get thread info\n"); | |
5167 | } | |
5168 | ||
5169 | static int | |
fba45db2 | 5170 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
5171 | { |
5172 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
5173 | return get_and_display_threadinfo (ref); | |
5174 | } | |
5175 | ||
5176 | static void | |
fba45db2 | 5177 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
5178 | { |
5179 | printf_filtered ("Remote Threadlist update test\n"); | |
5180 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
5181 | } | |
5182 | ||
5183 | static void | |
5184 | init_remote_threadtests (void) | |
5185 | { | |
1bedd215 AC |
5186 | add_com ("tlist", class_obscure, threadlist_test_cmd, _("\ |
5187 | Fetch and print the remote list of thread identifiers, one pkt only")); | |
c906108c | 5188 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 5189 | _("Fetch and display info about one thread")); |
c906108c | 5190 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 5191 | _("Test setting to a different thread")); |
c906108c | 5192 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 5193 | _("Iterate through updating all remote thread info")); |
c906108c | 5194 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 5195 | _(" Remote thread alive test ")); |
c906108c SS |
5196 | } |
5197 | ||
5198 | #endif /* 0 */ | |
5199 | ||
f3fb8c85 MS |
5200 | /* Convert a thread ID to a string. Returns the string in a static |
5201 | buffer. */ | |
5202 | ||
5203 | static char * | |
39f77062 | 5204 | remote_pid_to_str (ptid_t ptid) |
f3fb8c85 | 5205 | { |
fd0a2a6f | 5206 | static char buf[32]; |
f3fb8c85 | 5207 | |
6c76e4a1 | 5208 | xsnprintf (buf, sizeof buf, "thread %d", ptid_get_pid (ptid)); |
f3fb8c85 MS |
5209 | return buf; |
5210 | } | |
5211 | ||
38691318 KB |
5212 | /* Get the address of the thread local variable in OBJFILE which is |
5213 | stored at OFFSET within the thread local storage for thread PTID. */ | |
5214 | ||
5215 | static CORE_ADDR | |
5216 | remote_get_thread_local_address (ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
5217 | { | |
444abaca | 5218 | if (remote_protocol_packets[PACKET_qGetTLSAddr].support != PACKET_DISABLE) |
38691318 KB |
5219 | { |
5220 | struct remote_state *rs = get_remote_state (); | |
6d820c5c | 5221 | char *p = rs->buf; |
571dd617 | 5222 | enum packet_result result; |
38691318 KB |
5223 | |
5224 | strcpy (p, "qGetTLSAddr:"); | |
5225 | p += strlen (p); | |
5226 | p += hexnumstr (p, PIDGET (ptid)); | |
5227 | *p++ = ','; | |
5228 | p += hexnumstr (p, offset); | |
5229 | *p++ = ','; | |
5230 | p += hexnumstr (p, lm); | |
5231 | *p++ = '\0'; | |
5232 | ||
6d820c5c DJ |
5233 | putpkt (rs->buf); |
5234 | getpkt (&rs->buf, &rs->buf_size, 0); | |
5235 | result = packet_ok (rs->buf, &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 5236 | if (result == PACKET_OK) |
38691318 KB |
5237 | { |
5238 | ULONGEST result; | |
5239 | ||
6d820c5c | 5240 | unpack_varlen_hex (rs->buf, &result); |
38691318 KB |
5241 | return result; |
5242 | } | |
571dd617 | 5243 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
5244 | throw_error (TLS_GENERIC_ERROR, |
5245 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 5246 | else |
109c3e39 AC |
5247 | throw_error (TLS_GENERIC_ERROR, |
5248 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
5249 | } |
5250 | else | |
109c3e39 AC |
5251 | throw_error (TLS_GENERIC_ERROR, |
5252 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
5253 | /* Not reached. */ |
5254 | return 0; | |
5255 | } | |
5256 | ||
c906108c | 5257 | static void |
fba45db2 | 5258 | init_remote_ops (void) |
c906108c | 5259 | { |
c5aa993b | 5260 | remote_ops.to_shortname = "remote"; |
c906108c | 5261 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 5262 | remote_ops.to_doc = |
c906108c | 5263 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
5264 | Specify the serial device it is connected to\n\ |
5265 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
5266 | remote_ops.to_open = remote_open; |
5267 | remote_ops.to_close = remote_close; | |
c906108c | 5268 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 5269 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 5270 | remote_ops.to_resume = remote_resume; |
c906108c SS |
5271 | remote_ops.to_wait = remote_wait; |
5272 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
5273 | remote_ops.to_store_registers = remote_store_registers; | |
5274 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 5275 | remote_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 5276 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
5277 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5278 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
5279 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
5280 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
5281 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; | |
5282 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
5283 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
5284 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
5285 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b JM |
5286 | remote_ops.to_kill = remote_kill; |
5287 | remote_ops.to_load = generic_load; | |
c906108c SS |
5288 | remote_ops.to_mourn_inferior = remote_mourn; |
5289 | remote_ops.to_thread_alive = remote_thread_alive; | |
0f71a2f6 | 5290 | remote_ops.to_find_new_threads = remote_threads_info; |
0caabb7e | 5291 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 5292 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
c906108c | 5293 | remote_ops.to_stop = remote_stop; |
4b8a223f | 5294 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 5295 | remote_ops.to_rcmd = remote_rcmd; |
38691318 | 5296 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; |
c906108c | 5297 | remote_ops.to_stratum = process_stratum; |
c5aa993b JM |
5298 | remote_ops.to_has_all_memory = 1; |
5299 | remote_ops.to_has_memory = 1; | |
5300 | remote_ops.to_has_stack = 1; | |
5301 | remote_ops.to_has_registers = 1; | |
5302 | remote_ops.to_has_execution = 1; | |
5303 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
5304 | remote_ops.to_magic = OPS_MAGIC; | |
c906108c SS |
5305 | } |
5306 | ||
5307 | /* Set up the extended remote vector by making a copy of the standard | |
5308 | remote vector and adding to it. */ | |
5309 | ||
5310 | static void | |
fba45db2 | 5311 | init_extended_remote_ops (void) |
c906108c SS |
5312 | { |
5313 | extended_remote_ops = remote_ops; | |
5314 | ||
0f71a2f6 | 5315 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 5316 | extended_remote_ops.to_longname = |
c906108c | 5317 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 5318 | extended_remote_ops.to_doc = |
c906108c SS |
5319 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
5320 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 5321 | extended_remote_ops.to_open = extended_remote_open; |
c906108c SS |
5322 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
5323 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
0f71a2f6 JM |
5324 | } |
5325 | ||
6426a772 JM |
5326 | static int |
5327 | remote_can_async_p (void) | |
5328 | { | |
23860348 | 5329 | /* We're async whenever the serial device is. */ |
2cd58942 | 5330 | return (current_target.to_async_mask_value) && serial_can_async_p (remote_desc); |
6426a772 JM |
5331 | } |
5332 | ||
5333 | static int | |
5334 | remote_is_async_p (void) | |
5335 | { | |
23860348 | 5336 | /* We're async whenever the serial device is. */ |
2cd58942 | 5337 | return (current_target.to_async_mask_value) && serial_is_async_p (remote_desc); |
6426a772 JM |
5338 | } |
5339 | ||
2acceee2 JM |
5340 | /* Pass the SERIAL event on and up to the client. One day this code |
5341 | will be able to delay notifying the client of an event until the | |
23860348 | 5342 | point where an entire packet has been received. */ |
2acceee2 | 5343 | |
23860348 MS |
5344 | static void (*async_client_callback) (enum inferior_event_type event_type, |
5345 | void *context); | |
2acceee2 JM |
5346 | static void *async_client_context; |
5347 | static serial_event_ftype remote_async_serial_handler; | |
5348 | ||
6426a772 | 5349 | static void |
819cc324 | 5350 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 5351 | { |
2acceee2 JM |
5352 | /* Don't propogate error information up to the client. Instead let |
5353 | the client find out about the error by querying the target. */ | |
5354 | async_client_callback (INF_REG_EVENT, async_client_context); | |
5355 | } | |
5356 | ||
5357 | static void | |
23860348 MS |
5358 | remote_async (void (*callback) (enum inferior_event_type event_type, |
5359 | void *context), void *context) | |
2acceee2 | 5360 | { |
ed9a39eb | 5361 | if (current_target.to_async_mask_value == 0) |
8e65ff28 | 5362 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5363 | _("Calling remote_async when async is masked")); |
ed9a39eb | 5364 | |
2acceee2 JM |
5365 | if (callback != NULL) |
5366 | { | |
2cd58942 | 5367 | serial_async (remote_desc, remote_async_serial_handler, NULL); |
2acceee2 JM |
5368 | async_client_callback = callback; |
5369 | async_client_context = context; | |
5370 | } | |
5371 | else | |
2cd58942 | 5372 | serial_async (remote_desc, NULL, NULL); |
6426a772 JM |
5373 | } |
5374 | ||
43ff13b4 JM |
5375 | /* Target async and target extended-async. |
5376 | ||
5377 | This are temporary targets, until it is all tested. Eventually | |
5378 | async support will be incorporated int the usual 'remote' | |
23860348 | 5379 | target. */ |
43ff13b4 JM |
5380 | |
5381 | static void | |
c2d11a7d | 5382 | init_remote_async_ops (void) |
43ff13b4 JM |
5383 | { |
5384 | remote_async_ops.to_shortname = "async"; | |
23860348 MS |
5385 | remote_async_ops.to_longname = |
5386 | "Remote serial target in async version of the gdb-specific protocol"; | |
c5aa993b | 5387 | remote_async_ops.to_doc = |
43ff13b4 JM |
5388 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
5389 | Specify the serial device it is connected to (e.g. /dev/ttya)."; | |
c5aa993b JM |
5390 | remote_async_ops.to_open = remote_async_open; |
5391 | remote_async_ops.to_close = remote_close; | |
6ad8ae5c DJ |
5392 | remote_async_ops.to_detach = remote_detach; |
5393 | remote_async_ops.to_disconnect = remote_disconnect; | |
c5aa993b JM |
5394 | remote_async_ops.to_resume = remote_async_resume; |
5395 | remote_async_ops.to_wait = remote_async_wait; | |
5396 | remote_async_ops.to_fetch_registers = remote_fetch_registers; | |
5397 | remote_async_ops.to_store_registers = remote_store_registers; | |
5398 | remote_async_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 5399 | remote_async_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 5400 | remote_async_ops.to_files_info = remote_files_info; |
43ff13b4 JM |
5401 | remote_async_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5402 | remote_async_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
5403 | remote_async_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
5404 | remote_async_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
5405 | remote_async_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
5406 | remote_async_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
5407 | remote_async_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
5408 | remote_async_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; | |
5409 | remote_async_ops.to_stopped_data_address = remote_stopped_data_address; | |
6426a772 JM |
5410 | remote_async_ops.to_terminal_inferior = remote_async_terminal_inferior; |
5411 | remote_async_ops.to_terminal_ours = remote_async_terminal_ours; | |
c5aa993b JM |
5412 | remote_async_ops.to_kill = remote_async_kill; |
5413 | remote_async_ops.to_load = generic_load; | |
53a5351d | 5414 | remote_async_ops.to_mourn_inferior = remote_async_mourn; |
c5aa993b JM |
5415 | remote_async_ops.to_thread_alive = remote_thread_alive; |
5416 | remote_async_ops.to_find_new_threads = remote_threads_info; | |
cf759d3b ND |
5417 | remote_async_ops.to_pid_to_str = remote_pid_to_str; |
5418 | remote_async_ops.to_extra_thread_info = remote_threads_extra_info; | |
43ff13b4 | 5419 | remote_async_ops.to_stop = remote_stop; |
4b8a223f | 5420 | remote_async_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 5421 | remote_async_ops.to_rcmd = remote_rcmd; |
c5aa993b JM |
5422 | remote_async_ops.to_stratum = process_stratum; |
5423 | remote_async_ops.to_has_all_memory = 1; | |
5424 | remote_async_ops.to_has_memory = 1; | |
5425 | remote_async_ops.to_has_stack = 1; | |
5426 | remote_async_ops.to_has_registers = 1; | |
5427 | remote_async_ops.to_has_execution = 1; | |
5428 | remote_async_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
6426a772 JM |
5429 | remote_async_ops.to_can_async_p = remote_can_async_p; |
5430 | remote_async_ops.to_is_async_p = remote_is_async_p; | |
5431 | remote_async_ops.to_async = remote_async; | |
ed9a39eb | 5432 | remote_async_ops.to_async_mask_value = 1; |
c5aa993b | 5433 | remote_async_ops.to_magic = OPS_MAGIC; |
43ff13b4 JM |
5434 | } |
5435 | ||
5436 | /* Set up the async extended remote vector by making a copy of the standard | |
5437 | remote vector and adding to it. */ | |
5438 | ||
5439 | static void | |
c2d11a7d | 5440 | init_extended_async_remote_ops (void) |
43ff13b4 JM |
5441 | { |
5442 | extended_async_remote_ops = remote_async_ops; | |
5443 | ||
5444 | extended_async_remote_ops.to_shortname = "extended-async"; | |
c5aa993b | 5445 | extended_async_remote_ops.to_longname = |
43ff13b4 | 5446 | "Extended remote serial target in async gdb-specific protocol"; |
c5aa993b | 5447 | extended_async_remote_ops.to_doc = |
43ff13b4 JM |
5448 | "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\ |
5449 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 5450 | extended_async_remote_ops.to_open = extended_remote_async_open; |
43ff13b4 JM |
5451 | extended_async_remote_ops.to_create_inferior = extended_remote_async_create_inferior; |
5452 | extended_async_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
5453 | } | |
5454 | ||
5a2468f5 | 5455 | static void |
c2d11a7d | 5456 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 5457 | { |
5a2468f5 JM |
5458 | } |
5459 | ||
d471ea57 AC |
5460 | static void |
5461 | show_remote_cmd (char *args, int from_tty) | |
5462 | { | |
37a105a1 DJ |
5463 | /* We can't just use cmd_show_list here, because we want to skip |
5464 | the redundant "show remote Z-packet". */ | |
5465 | struct cleanup *showlist_chain; | |
5466 | struct cmd_list_element *list = remote_show_cmdlist; | |
5467 | ||
5468 | showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist"); | |
5469 | for (; list != NULL; list = list->next) | |
5470 | if (strcmp (list->name, "Z-packet") == 0) | |
5471 | continue; | |
5472 | else if (list->type == show_cmd) | |
5473 | { | |
5474 | struct cleanup *option_chain | |
5475 | = make_cleanup_ui_out_tuple_begin_end (uiout, "option"); | |
5476 | ui_out_field_string (uiout, "name", list->name); | |
5477 | ui_out_text (uiout, ": "); | |
5478 | do_setshow_command ((char *) NULL, from_tty, list); | |
5479 | /* Close the tuple. */ | |
5480 | do_cleanups (option_chain); | |
5481 | } | |
d471ea57 | 5482 | } |
5a2468f5 | 5483 | |
0f71a2f6 | 5484 | static void |
fba45db2 | 5485 | build_remote_gdbarch_data (void) |
0f71a2f6 | 5486 | { |
d696208f | 5487 | remote_address_size = TARGET_ADDR_BIT; |
0f71a2f6 JM |
5488 | } |
5489 | ||
23860348 | 5490 | /* Saved pointer to previous owner of the new_objfile event. */ |
dc8acb97 MS |
5491 | static void (*remote_new_objfile_chain) (struct objfile *); |
5492 | ||
23860348 | 5493 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
5494 | static void |
5495 | remote_new_objfile (struct objfile *objfile) | |
5496 | { | |
23860348 | 5497 | if (remote_desc != 0) /* Have a remote connection. */ |
dc8acb97 MS |
5498 | { |
5499 | remote_check_symbols (objfile); | |
5500 | } | |
23860348 | 5501 | /* Call predecessor on chain, if any. */ |
dc8acb97 MS |
5502 | if (remote_new_objfile_chain != 0 && |
5503 | remote_desc == 0) | |
5504 | remote_new_objfile_chain (objfile); | |
5505 | } | |
5506 | ||
c906108c | 5507 | void |
fba45db2 | 5508 | _initialize_remote (void) |
c906108c | 5509 | { |
ea9c271d DJ |
5510 | struct remote_state *rs; |
5511 | ||
0f71a2f6 | 5512 | /* architecture specific data */ |
23860348 MS |
5513 | remote_gdbarch_data_handle = |
5514 | gdbarch_data_register_post_init (init_remote_state); | |
d01949b6 AC |
5515 | |
5516 | /* Old tacky stuff. NOTE: This comes after the remote protocol so | |
5517 | that the remote protocol has been initialized. */ | |
046a4708 AC |
5518 | DEPRECATED_REGISTER_GDBARCH_SWAP (remote_address_size); |
5519 | deprecated_register_gdbarch_swap (NULL, 0, build_remote_gdbarch_data); | |
0f71a2f6 | 5520 | |
ea9c271d DJ |
5521 | /* Initialize the per-target state. At the moment there is only one |
5522 | of these, not one per target. Only one target is active at a | |
5523 | time. The default buffer size is unimportant; it will be expanded | |
5524 | whenever a larger buffer is needed. */ | |
5525 | rs = get_remote_state (); | |
5526 | rs->buf_size = 400; | |
5527 | rs->buf = xmalloc (rs->buf_size); | |
5528 | ||
c906108c SS |
5529 | init_remote_ops (); |
5530 | add_target (&remote_ops); | |
5531 | ||
5532 | init_extended_remote_ops (); | |
5533 | add_target (&extended_remote_ops); | |
cce74817 | 5534 | |
43ff13b4 JM |
5535 | init_remote_async_ops (); |
5536 | add_target (&remote_async_ops); | |
5537 | ||
5538 | init_extended_async_remote_ops (); | |
5539 | add_target (&extended_async_remote_ops); | |
5540 | ||
dc8acb97 | 5541 | /* Hook into new objfile notification. */ |
9a4105ab AC |
5542 | remote_new_objfile_chain = deprecated_target_new_objfile_hook; |
5543 | deprecated_target_new_objfile_hook = remote_new_objfile; | |
dc8acb97 | 5544 | |
c906108c SS |
5545 | #if 0 |
5546 | init_remote_threadtests (); | |
5547 | #endif | |
5548 | ||
23860348 | 5549 | /* set/show remote ... */ |
d471ea57 | 5550 | |
1bedd215 | 5551 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
5552 | Remote protocol specific variables\n\ |
5553 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 5554 | the packets being used"), |
cff3e48b | 5555 | &remote_set_cmdlist, "set remote ", |
23860348 | 5556 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 5557 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
5558 | Remote protocol specific variables\n\ |
5559 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 5560 | the packets being used"), |
cff3e48b | 5561 | &remote_show_cmdlist, "show remote ", |
23860348 | 5562 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 5563 | |
1a966eab AC |
5564 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
5565 | Compare section data on target to the exec file.\n\ | |
5566 | Argument is a single section name (default: all loaded sections)."), | |
c906108c SS |
5567 | &cmdlist); |
5568 | ||
1a966eab AC |
5569 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
5570 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
5571 | maintenance packet TEXT\n\ |
5572 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
5573 | this command sends the string TEXT to the inferior, and displays the\n\ | |
5574 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 5575 | terminating `#' character and checksum."), |
c906108c SS |
5576 | &maintenancelist); |
5577 | ||
7915a72c AC |
5578 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
5579 | Set whether to send break if interrupted."), _("\ | |
5580 | Show whether to send break if interrupted."), _("\ | |
5581 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
2c5b56ce | 5582 | NULL, NULL, /* FIXME: i18n: Whether to send break if interrupted is %s. */ |
e707bbc2 | 5583 | &setlist, &showlist); |
c906108c | 5584 | |
23860348 | 5585 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 5586 | |
1a966eab AC |
5587 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
5588 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 5589 | &setlist); |
1a966eab AC |
5590 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
5591 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
5592 | &showlist); |
5593 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
5594 | set_memory_write_packet_size, _("\ |
5595 | Set the maximum number of bytes per memory-write packet.\n\ | |
5596 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
5597 | default packet size. The actual limit is further reduced\n\ | |
5598 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
5599 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
5600 | &remote_set_cmdlist); |
5601 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
5602 | set_memory_read_packet_size, _("\ |
5603 | Set the maximum number of bytes per memory-read packet.\n\ | |
5604 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
5605 | default packet size. The actual limit is further reduced\n\ | |
5606 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
5607 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
5608 | &remote_set_cmdlist); |
5609 | add_cmd ("memory-write-packet-size", no_class, | |
5610 | show_memory_write_packet_size, | |
1a966eab | 5611 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
5612 | &remote_show_cmdlist); |
5613 | add_cmd ("memory-read-packet-size", no_class, | |
5614 | show_memory_read_packet_size, | |
1a966eab | 5615 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 5616 | &remote_show_cmdlist); |
c906108c | 5617 | |
b3f42336 | 5618 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
5619 | &remote_hw_watchpoint_limit, _("\ |
5620 | Set the maximum number of target hardware watchpoints."), _("\ | |
5621 | Show the maximum number of target hardware watchpoints."), _("\ | |
5622 | Specify a negative limit for unlimited."), | |
2c5b56ce | 5623 | NULL, NULL, /* FIXME: i18n: The maximum number of target hardware watchpoints is %s. */ |
b3f42336 AC |
5624 | &remote_set_cmdlist, &remote_show_cmdlist); |
5625 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, | |
7915a72c AC |
5626 | &remote_hw_breakpoint_limit, _("\ |
5627 | Set the maximum number of target hardware breakpoints."), _("\ | |
5628 | Show the maximum number of target hardware breakpoints."), _("\ | |
5629 | Specify a negative limit for unlimited."), | |
2c5b56ce | 5630 | NULL, NULL, /* FIXME: i18n: The maximum number of target hardware breakpoints is %s. */ |
b3f42336 | 5631 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 5632 | |
4d28ad1e AC |
5633 | add_setshow_integer_cmd ("remoteaddresssize", class_obscure, |
5634 | &remote_address_size, _("\ | |
5635 | Set the maximum size of the address (in bits) in a memory packet."), _("\ | |
5636 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
5637 | NULL, | |
5638 | NULL, /* FIXME: i18n: */ | |
5639 | &setlist, &showlist); | |
c906108c | 5640 | |
444abaca | 5641 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 5642 | "X", "binary-download", 1); |
0f71a2f6 | 5643 | |
444abaca | 5644 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 5645 | "vCont", "verbose-resume", 0); |
506fb367 | 5646 | |
444abaca | 5647 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 5648 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 5649 | |
444abaca | 5650 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 5651 | "P", "set-register", 1); |
d471ea57 | 5652 | |
444abaca | 5653 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 5654 | "p", "fetch-register", 1); |
b96ec7ac | 5655 | |
444abaca | 5656 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 5657 | "Z0", "software-breakpoint", 0); |
d471ea57 | 5658 | |
444abaca | 5659 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 5660 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 5661 | |
444abaca | 5662 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 5663 | "Z2", "write-watchpoint", 0); |
d471ea57 | 5664 | |
444abaca | 5665 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 5666 | "Z3", "read-watchpoint", 0); |
d471ea57 | 5667 | |
444abaca | 5668 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 5669 | "Z4", "access-watchpoint", 0); |
d471ea57 | 5670 | |
444abaca | 5671 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qPart_auxv], |
bb572ddd | 5672 | "qPart:auxv", "read-aux-vector", 0); |
802188a7 | 5673 | |
444abaca | 5674 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 5675 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
5676 | 0); |
5677 | ||
37a105a1 DJ |
5678 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
5679 | Z sub-packet has its own set and show commands, but users may | |
5680 | have sets to this variable in their .gdbinit files (or in their | |
5681 | documentation). */ | |
e9e68a56 | 5682 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
5683 | &remote_Z_packet_detect, _("\ |
5684 | Set use of remote protocol `Z' packets"), _("\ | |
5685 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 5686 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 5687 | packets."), |
e9e68a56 | 5688 | set_remote_protocol_Z_packet_cmd, |
2c5b56ce | 5689 | show_remote_protocol_Z_packet_cmd, /* FIXME: i18n: Use of remote protocol `Z' packets is %s. */ |
e9e68a56 | 5690 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 CV |
5691 | |
5692 | /* Eventually initialize fileio. See fileio.c */ | |
5693 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
c906108c | 5694 | } |