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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); | |
d9fcf2fb | 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 | |
c2d11a7d | 107 | static void remote_send (char *buf, long sizeof_buf); |
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 | |
c2d11a7d | 135 | static long read_frame (char *buf, long sizeof_buf); |
c906108c | 136 | |
5a168c78 | 137 | static int remote_insert_breakpoint (CORE_ADDR, bfd_byte *); |
c906108c | 138 | |
5a168c78 | 139 | static int remote_remove_breakpoint (CORE_ADDR, bfd_byte *); |
c906108c | 140 | |
a14ed312 | 141 | static int hexnumlen (ULONGEST num); |
c906108c | 142 | |
a14ed312 | 143 | static void init_remote_ops (void); |
c906108c | 144 | |
a14ed312 | 145 | static void init_extended_remote_ops (void); |
c906108c | 146 | |
a14ed312 | 147 | static void remote_stop (void); |
c906108c | 148 | |
a14ed312 | 149 | static int ishex (int ch, int *val); |
c906108c | 150 | |
a14ed312 | 151 | static int stubhex (int ch); |
c906108c | 152 | |
a14ed312 | 153 | static int hexnumstr (char *, ULONGEST); |
c906108c | 154 | |
a14ed312 | 155 | static int hexnumnstr (char *, ULONGEST, int); |
2df3850c | 156 | |
a14ed312 | 157 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
c906108c | 158 | |
a14ed312 | 159 | static void print_packet (char *); |
c906108c | 160 | |
a14ed312 | 161 | static unsigned long crc32 (unsigned char *, int, unsigned int); |
c906108c | 162 | |
a14ed312 | 163 | static void compare_sections_command (char *, int); |
c906108c | 164 | |
a14ed312 | 165 | static void packet_command (char *, int); |
c906108c | 166 | |
a14ed312 | 167 | static int stub_unpack_int (char *buff, int fieldlength); |
c906108c | 168 | |
39f77062 | 169 | static ptid_t remote_current_thread (ptid_t oldptid); |
c906108c | 170 | |
a14ed312 | 171 | static void remote_find_new_threads (void); |
c906108c | 172 | |
a14ed312 | 173 | static void record_currthread (int currthread); |
c906108c | 174 | |
30559e10 | 175 | static int fromhex (int a); |
c906108c | 176 | |
cfd77fa1 | 177 | static int hex2bin (const char *hex, gdb_byte *bin, int count); |
c906108c | 178 | |
cfd77fa1 | 179 | static int bin2hex (const gdb_byte *bin, char *hex, int count); |
234fa6d1 | 180 | |
a14ed312 | 181 | static int putpkt_binary (char *buf, int cnt); |
c906108c | 182 | |
a14ed312 | 183 | static void check_binary_download (CORE_ADDR addr); |
c906108c | 184 | |
5a2468f5 | 185 | struct packet_config; |
5a2468f5 | 186 | |
a14ed312 | 187 | static void show_packet_config_cmd (struct packet_config *config); |
5a2468f5 | 188 | |
d471ea57 | 189 | static void update_packet_config (struct packet_config *config); |
5a2468f5 | 190 | |
a14ed312 | 191 | void _initialize_remote (void); |
c906108c | 192 | |
694f61fb | 193 | /* Description of the remote protocol. Strictly speaking, when the |
d01949b6 AC |
194 | target is open()ed, remote.c should create a per-target description |
195 | of the remote protocol using that target's architecture. | |
ce2826aa | 196 | Unfortunately, the target stack doesn't include local state. For |
d01949b6 AC |
197 | the moment keep the information in the target's architecture |
198 | object. Sigh.. */ | |
199 | ||
ad10f812 AC |
200 | struct packet_reg |
201 | { | |
202 | long offset; /* Offset into G packet. */ | |
203 | long regnum; /* GDB's internal register number. */ | |
204 | LONGEST pnum; /* Remote protocol register number. */ | |
b323314b | 205 | int in_g_packet; /* Always part of G packet. */ |
23860348 MS |
206 | /* long size in bytes; == register_size (current_gdbarch, regnum); |
207 | at present. */ | |
ad10f812 AC |
208 | /* char *name; == REGISTER_NAME (regnum); at present. */ |
209 | }; | |
210 | ||
d01949b6 AC |
211 | struct remote_state |
212 | { | |
ad10f812 AC |
213 | /* Description of the remote protocol registers. */ |
214 | long sizeof_g_packet; | |
b323314b AC |
215 | |
216 | /* Description of the remote protocol registers indexed by REGNUM | |
217 | (making an array of NUM_REGS + NUM_PSEUDO_REGS in size). */ | |
218 | struct packet_reg *regs; | |
ad10f812 | 219 | |
d01949b6 AC |
220 | /* This is the size (in chars) of the first response to the ``g'' |
221 | packet. It is used as a heuristic when determining the maximum | |
222 | size of memory-read and memory-write packets. A target will | |
223 | typically only reserve a buffer large enough to hold the ``g'' | |
224 | packet. The size does not include packet overhead (headers and | |
23860348 | 225 | trailers). */ |
d01949b6 AC |
226 | long actual_register_packet_size; |
227 | ||
228 | /* This is the maximum size (in chars) of a non read/write packet. | |
23860348 | 229 | It is also used as a cap on the size of read/write packets. */ |
d01949b6 AC |
230 | long remote_packet_size; |
231 | }; | |
232 | ||
3c3bea1c | 233 | |
d01949b6 AC |
234 | /* Handle for retreving the remote protocol data from gdbarch. */ |
235 | static struct gdbarch_data *remote_gdbarch_data_handle; | |
236 | ||
237 | static struct remote_state * | |
5ae5f592 | 238 | get_remote_state (void) |
d01949b6 | 239 | { |
451fbdda | 240 | return gdbarch_data (current_gdbarch, remote_gdbarch_data_handle); |
d01949b6 AC |
241 | } |
242 | ||
243 | static void * | |
244 | init_remote_state (struct gdbarch *gdbarch) | |
245 | { | |
246 | int regnum; | |
e5e78edc | 247 | struct remote_state *rs = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct remote_state); |
d01949b6 | 248 | |
46845f5e | 249 | rs->sizeof_g_packet = 0; |
ad10f812 | 250 | |
b323314b | 251 | /* Assume a 1:1 regnum<->pnum table. */ |
e5e78edc AC |
252 | rs->regs = GDBARCH_OBSTACK_CALLOC (gdbarch, NUM_REGS + NUM_PSEUDO_REGS, |
253 | struct packet_reg); | |
b323314b | 254 | for (regnum = 0; regnum < NUM_REGS + NUM_PSEUDO_REGS; regnum++) |
ad10f812 | 255 | { |
b323314b AC |
256 | struct packet_reg *r = &rs->regs[regnum]; |
257 | r->pnum = regnum; | |
258 | r->regnum = regnum; | |
62700349 | 259 | r->offset = DEPRECATED_REGISTER_BYTE (regnum); |
b323314b | 260 | r->in_g_packet = (regnum < NUM_REGS); |
ad10f812 | 261 | /* ...name = REGISTER_NAME (regnum); */ |
7d58c67d | 262 | |
23860348 | 263 | /* Compute packet size by accumulating the size of all registers. */ |
46845f5e KB |
264 | if (regnum < NUM_REGS) |
265 | rs->sizeof_g_packet += register_size (current_gdbarch, regnum); | |
ad10f812 AC |
266 | } |
267 | ||
d01949b6 AC |
268 | /* Default maximum number of characters in a packet body. Many |
269 | remote stubs have a hardwired buffer size of 400 bytes | |
270 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
271 | as the maximum packet-size to ensure that the packet and an extra | |
272 | NUL character can always fit in the buffer. This stops GDB | |
273 | trashing stubs that try to squeeze an extra NUL into what is | |
23860348 | 274 | already a full buffer (As of 1999-12-04 that was most stubs. */ |
d01949b6 AC |
275 | rs->remote_packet_size = 400 - 1; |
276 | ||
ad10f812 AC |
277 | /* Should rs->sizeof_g_packet needs more space than the |
278 | default, adjust the size accordingly. Remember that each byte is | |
279 | encoded as two characters. 32 is the overhead for the packet | |
280 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 281 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 282 | little. */ |
ad10f812 AC |
283 | if (rs->sizeof_g_packet > ((rs->remote_packet_size - 32) / 2)) |
284 | rs->remote_packet_size = (rs->sizeof_g_packet * 2 + 32); | |
802188a7 | 285 | |
23860348 | 286 | /* This one is filled in when a ``g'' packet is received. */ |
d01949b6 AC |
287 | rs->actual_register_packet_size = 0; |
288 | ||
289 | return rs; | |
290 | } | |
291 | ||
ad10f812 AC |
292 | static struct packet_reg * |
293 | packet_reg_from_regnum (struct remote_state *rs, long regnum) | |
294 | { | |
b323314b AC |
295 | if (regnum < 0 && regnum >= NUM_REGS + NUM_PSEUDO_REGS) |
296 | return NULL; | |
297 | else | |
ad10f812 | 298 | { |
b323314b AC |
299 | struct packet_reg *r = &rs->regs[regnum]; |
300 | gdb_assert (r->regnum == regnum); | |
301 | return r; | |
ad10f812 | 302 | } |
ad10f812 AC |
303 | } |
304 | ||
305 | static struct packet_reg * | |
306 | packet_reg_from_pnum (struct remote_state *rs, LONGEST pnum) | |
307 | { | |
b323314b AC |
308 | int i; |
309 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) | |
ad10f812 | 310 | { |
b323314b AC |
311 | struct packet_reg *r = &rs->regs[i]; |
312 | if (r->pnum == pnum) | |
313 | return r; | |
ad10f812 AC |
314 | } |
315 | return NULL; | |
d01949b6 AC |
316 | } |
317 | ||
3c3bea1c GS |
318 | /* FIXME: graces/2002-08-08: These variables should eventually be |
319 | bound to an instance of the target object (as in gdbarch-tdep()), | |
320 | when such a thing exists. */ | |
321 | ||
322 | /* This is set to the data address of the access causing the target | |
323 | to stop for a watchpoint. */ | |
324 | static CORE_ADDR remote_watch_data_address; | |
325 | ||
94e08568 | 326 | /* This is non-zero if target stopped for a watchpoint. */ |
3c3bea1c GS |
327 | static int remote_stopped_by_watchpoint_p; |
328 | ||
c906108c SS |
329 | static struct target_ops remote_ops; |
330 | ||
331 | static struct target_ops extended_remote_ops; | |
332 | ||
43ff13b4 | 333 | /* Temporary target ops. Just like the remote_ops and |
23860348 | 334 | extended_remote_ops, but with asynchronous support. */ |
43ff13b4 JM |
335 | static struct target_ops remote_async_ops; |
336 | ||
337 | static struct target_ops extended_async_remote_ops; | |
338 | ||
6426a772 JM |
339 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
340 | ``forever'' still use the normal timeout mechanism. This is | |
341 | currently used by the ASYNC code to guarentee that target reads | |
342 | during the initial connect always time-out. Once getpkt has been | |
343 | modified to return a timeout indication and, in turn | |
344 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
23860348 | 345 | this can go away. */ |
6426a772 JM |
346 | static int wait_forever_enabled_p = 1; |
347 | ||
348 | ||
c906108c SS |
349 | /* This variable chooses whether to send a ^C or a break when the user |
350 | requests program interruption. Although ^C is usually what remote | |
351 | systems expect, and that is the default here, sometimes a break is | |
352 | preferable instead. */ | |
353 | ||
354 | static int remote_break; | |
355 | ||
c906108c SS |
356 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
357 | remote_open knows that we don't have a file open when the program | |
358 | starts. */ | |
819cc324 | 359 | static struct serial *remote_desc = NULL; |
c906108c | 360 | |
c906108c SS |
361 | /* This variable sets the number of bits in an address that are to be |
362 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
363 | leading zeros, the entire address would be sent. This variable | |
364 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The | |
365 | initial implementation of remote.c restricted the address sent in | |
366 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
367 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
368 | address was never sent. Since fixing this bug may cause a break in | |
369 | some remote targets this variable is principly provided to | |
23860348 | 370 | facilitate backward compatibility. */ |
c906108c SS |
371 | |
372 | static int remote_address_size; | |
373 | ||
6426a772 JM |
374 | /* Tempoary to track who currently owns the terminal. See |
375 | target_async_terminal_* for more details. */ | |
376 | ||
377 | static int remote_async_terminal_ours_p; | |
378 | ||
11cf8741 | 379 | \f |
11cf8741 | 380 | /* User configurable variables for the number of characters in a |
24b06219 | 381 | memory read/write packet. MIN (rs->remote_packet_size, |
ad10f812 | 382 | rs->sizeof_g_packet) is the default. Some targets need smaller |
24b06219 | 383 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
384 | (speed up transfers). The variables ``preferred_*'' (the user |
385 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 386 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
387 | |
388 | struct memory_packet_config | |
389 | { | |
390 | char *name; | |
391 | long size; | |
392 | int fixed_p; | |
393 | }; | |
394 | ||
395 | /* Compute the current size of a read/write packet. Since this makes | |
396 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
397 | ||
398 | static long | |
399 | get_memory_packet_size (struct memory_packet_config *config) | |
400 | { | |
d01949b6 | 401 | struct remote_state *rs = get_remote_state (); |
11cf8741 JM |
402 | /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk |
403 | law?) that some hosts don't cope very well with large alloca() | |
404 | calls. Eventually the alloca() code will be replaced by calls to | |
405 | xmalloc() and make_cleanups() allowing this restriction to either | |
23860348 | 406 | be lifted or removed. */ |
11cf8741 JM |
407 | #ifndef MAX_REMOTE_PACKET_SIZE |
408 | #define MAX_REMOTE_PACKET_SIZE 16384 | |
409 | #endif | |
3de11b2e | 410 | /* NOTE: 20 ensures we can write at least one byte. */ |
11cf8741 | 411 | #ifndef MIN_REMOTE_PACKET_SIZE |
3de11b2e | 412 | #define MIN_REMOTE_PACKET_SIZE 20 |
11cf8741 JM |
413 | #endif |
414 | long what_they_get; | |
415 | if (config->fixed_p) | |
416 | { | |
417 | if (config->size <= 0) | |
418 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
419 | else | |
420 | what_they_get = config->size; | |
421 | } | |
422 | else | |
423 | { | |
24b06219 | 424 | what_they_get = rs->remote_packet_size; |
23860348 | 425 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
426 | if (config->size > 0 |
427 | && what_they_get > config->size) | |
428 | what_they_get = config->size; | |
23860348 | 429 | /* Limit it to the size of the targets ``g'' response. */ |
d01949b6 AC |
430 | if ((rs->actual_register_packet_size) > 0 |
431 | && what_they_get > (rs->actual_register_packet_size)) | |
432 | what_they_get = (rs->actual_register_packet_size); | |
11cf8741 JM |
433 | } |
434 | if (what_they_get > MAX_REMOTE_PACKET_SIZE) | |
435 | what_they_get = MAX_REMOTE_PACKET_SIZE; | |
436 | if (what_they_get < MIN_REMOTE_PACKET_SIZE) | |
437 | what_they_get = MIN_REMOTE_PACKET_SIZE; | |
438 | return what_they_get; | |
439 | } | |
440 | ||
441 | /* Update the size of a read/write packet. If they user wants | |
23860348 | 442 | something really big then do a sanity check. */ |
11cf8741 JM |
443 | |
444 | static void | |
445 | set_memory_packet_size (char *args, struct memory_packet_config *config) | |
446 | { | |
447 | int fixed_p = config->fixed_p; | |
448 | long size = config->size; | |
449 | if (args == NULL) | |
8a3fe4f8 | 450 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
451 | else if (strcmp (args, "hard") == 0 |
452 | || strcmp (args, "fixed") == 0) | |
453 | fixed_p = 1; | |
454 | else if (strcmp (args, "soft") == 0 | |
455 | || strcmp (args, "limit") == 0) | |
456 | fixed_p = 0; | |
457 | else | |
458 | { | |
459 | char *end; | |
460 | size = strtoul (args, &end, 0); | |
461 | if (args == end) | |
8a3fe4f8 | 462 | error (_("Invalid %s (bad syntax)."), config->name); |
11cf8741 JM |
463 | #if 0 |
464 | /* Instead of explicitly capping the size of a packet to | |
465 | MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is | |
466 | instead allowed to set the size to something arbitrarily | |
23860348 | 467 | large. */ |
11cf8741 | 468 | if (size > MAX_REMOTE_PACKET_SIZE) |
8a3fe4f8 | 469 | error (_("Invalid %s (too large)."), config->name); |
11cf8741 JM |
470 | #endif |
471 | } | |
23860348 | 472 | /* Extra checks? */ |
11cf8741 JM |
473 | if (fixed_p && !config->fixed_p) |
474 | { | |
e2e0b3e5 AC |
475 | if (! query (_("The target may not be able to correctly handle a %s\n" |
476 | "of %ld bytes. Change the packet size? "), | |
11cf8741 | 477 | config->name, size)) |
8a3fe4f8 | 478 | error (_("Packet size not changed.")); |
11cf8741 | 479 | } |
23860348 | 480 | /* Update the config. */ |
11cf8741 JM |
481 | config->fixed_p = fixed_p; |
482 | config->size = size; | |
483 | } | |
484 | ||
485 | static void | |
486 | show_memory_packet_size (struct memory_packet_config *config) | |
487 | { | |
a3f17187 | 488 | printf_filtered (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 489 | if (config->fixed_p) |
a3f17187 | 490 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
11cf8741 JM |
491 | get_memory_packet_size (config)); |
492 | else | |
a3f17187 | 493 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
11cf8741 JM |
494 | get_memory_packet_size (config)); |
495 | } | |
496 | ||
497 | static struct memory_packet_config memory_write_packet_config = | |
498 | { | |
499 | "memory-write-packet-size", | |
500 | }; | |
501 | ||
502 | static void | |
503 | set_memory_write_packet_size (char *args, int from_tty) | |
504 | { | |
505 | set_memory_packet_size (args, &memory_write_packet_config); | |
506 | } | |
507 | ||
508 | static void | |
509 | show_memory_write_packet_size (char *args, int from_tty) | |
510 | { | |
511 | show_memory_packet_size (&memory_write_packet_config); | |
512 | } | |
513 | ||
514 | static long | |
515 | get_memory_write_packet_size (void) | |
516 | { | |
517 | return get_memory_packet_size (&memory_write_packet_config); | |
518 | } | |
519 | ||
520 | static struct memory_packet_config memory_read_packet_config = | |
521 | { | |
522 | "memory-read-packet-size", | |
523 | }; | |
524 | ||
525 | static void | |
526 | set_memory_read_packet_size (char *args, int from_tty) | |
527 | { | |
528 | set_memory_packet_size (args, &memory_read_packet_config); | |
529 | } | |
530 | ||
531 | static void | |
532 | show_memory_read_packet_size (char *args, int from_tty) | |
533 | { | |
534 | show_memory_packet_size (&memory_read_packet_config); | |
535 | } | |
536 | ||
537 | static long | |
538 | get_memory_read_packet_size (void) | |
539 | { | |
d01949b6 | 540 | struct remote_state *rs = get_remote_state (); |
11cf8741 JM |
541 | long size = get_memory_packet_size (&memory_read_packet_config); |
542 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an | |
543 | extra buffer size argument before the memory read size can be | |
24b06219 MK |
544 | increased beyond RS->remote_packet_size. */ |
545 | if (size > rs->remote_packet_size) | |
546 | size = rs->remote_packet_size; | |
11cf8741 JM |
547 | return size; |
548 | } | |
549 | ||
11cf8741 | 550 | \f |
5a2468f5 JM |
551 | /* Generic configuration support for packets the stub optionally |
552 | supports. Allows the user to specify the use of the packet as well | |
23860348 | 553 | as allowing GDB to auto-detect support in the remote stub. */ |
5a2468f5 JM |
554 | |
555 | enum packet_support | |
556 | { | |
557 | PACKET_SUPPORT_UNKNOWN = 0, | |
558 | PACKET_ENABLE, | |
559 | PACKET_DISABLE | |
560 | }; | |
561 | ||
5a2468f5 JM |
562 | struct packet_config |
563 | { | |
5a2468f5 JM |
564 | char *name; |
565 | char *title; | |
7f19b9a2 | 566 | enum auto_boolean detect; |
5a2468f5 JM |
567 | enum packet_support support; |
568 | }; | |
569 | ||
d471ea57 | 570 | /* Analyze a packet's return value and update the packet config |
23860348 | 571 | accordingly. */ |
d471ea57 AC |
572 | |
573 | enum packet_result | |
574 | { | |
575 | PACKET_ERROR, | |
576 | PACKET_OK, | |
577 | PACKET_UNKNOWN | |
578 | }; | |
579 | ||
5a2468f5 | 580 | static void |
d471ea57 | 581 | update_packet_config (struct packet_config *config) |
5a2468f5 | 582 | { |
d471ea57 AC |
583 | switch (config->detect) |
584 | { | |
7f19b9a2 | 585 | case AUTO_BOOLEAN_TRUE: |
d471ea57 AC |
586 | config->support = PACKET_ENABLE; |
587 | break; | |
7f19b9a2 | 588 | case AUTO_BOOLEAN_FALSE: |
d471ea57 AC |
589 | config->support = PACKET_DISABLE; |
590 | break; | |
7f19b9a2 | 591 | case AUTO_BOOLEAN_AUTO: |
d471ea57 AC |
592 | config->support = PACKET_SUPPORT_UNKNOWN; |
593 | break; | |
594 | } | |
5a2468f5 JM |
595 | } |
596 | ||
597 | static void | |
fba45db2 | 598 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 JM |
599 | { |
600 | char *support = "internal-error"; | |
601 | switch (config->support) | |
602 | { | |
603 | case PACKET_ENABLE: | |
604 | support = "enabled"; | |
605 | break; | |
606 | case PACKET_DISABLE: | |
607 | support = "disabled"; | |
608 | break; | |
609 | case PACKET_SUPPORT_UNKNOWN: | |
610 | support = "unknown"; | |
611 | break; | |
612 | } | |
613 | switch (config->detect) | |
614 | { | |
7f19b9a2 | 615 | case AUTO_BOOLEAN_AUTO: |
37a105a1 DJ |
616 | printf_filtered (_("Support for the `%s' packet is auto-detected, currently %s.\n"), |
617 | config->name, support); | |
5a2468f5 | 618 | break; |
7f19b9a2 AC |
619 | case AUTO_BOOLEAN_TRUE: |
620 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
621 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
622 | config->name, support); | |
8e248173 | 623 | break; |
5a2468f5 JM |
624 | } |
625 | } | |
626 | ||
627 | static void | |
d471ea57 AC |
628 | add_packet_config_cmd (struct packet_config *config, |
629 | char *name, | |
630 | char *title, | |
e9e68a56 | 631 | cmd_sfunc_ftype *set_func, |
08546159 | 632 | show_value_ftype *show_func, |
d471ea57 AC |
633 | struct cmd_list_element **set_remote_list, |
634 | struct cmd_list_element **show_remote_list, | |
635 | int legacy) | |
636 | { | |
5a2468f5 JM |
637 | char *set_doc; |
638 | char *show_doc; | |
d471ea57 | 639 | char *cmd_name; |
3ed07be4 | 640 | |
5a2468f5 JM |
641 | config->name = name; |
642 | config->title = title; | |
7f19b9a2 | 643 | config->detect = AUTO_BOOLEAN_AUTO; |
8e248173 | 644 | config->support = PACKET_SUPPORT_UNKNOWN; |
b435e160 AC |
645 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet", |
646 | name, title); | |
647 | show_doc = xstrprintf ("Show current use of remote protocol `%s' (%s) packet", | |
648 | name, title); | |
d471ea57 | 649 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 650 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 651 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
2c5b56ce | 652 | &config->detect, set_doc, show_doc, NULL, /* help_doc */ |
e9e68a56 AC |
653 | set_func, show_func, |
654 | set_remote_list, show_remote_list); | |
23860348 | 655 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
656 | if (legacy) |
657 | { | |
658 | char *legacy_name; | |
b435e160 | 659 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 AC |
660 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
661 | set_remote_list); | |
662 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, | |
663 | show_remote_list); | |
664 | } | |
5a2468f5 JM |
665 | } |
666 | ||
d471ea57 AC |
667 | static enum packet_result |
668 | packet_ok (const char *buf, struct packet_config *config) | |
5a2468f5 | 669 | { |
d471ea57 | 670 | if (buf[0] != '\0') |
5a2468f5 | 671 | { |
d471ea57 | 672 | /* The stub recognized the packet request. Check that the |
23860348 | 673 | operation succeeded. */ |
d471ea57 AC |
674 | switch (config->support) |
675 | { | |
676 | case PACKET_SUPPORT_UNKNOWN: | |
677 | if (remote_debug) | |
678 | fprintf_unfiltered (gdb_stdlog, | |
679 | "Packet %s (%s) is supported\n", | |
680 | config->name, config->title); | |
681 | config->support = PACKET_ENABLE; | |
682 | break; | |
683 | case PACKET_DISABLE: | |
8e65ff28 | 684 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 685 | _("packet_ok: attempt to use a disabled packet")); |
d471ea57 AC |
686 | break; |
687 | case PACKET_ENABLE: | |
688 | break; | |
689 | } | |
690 | if (buf[0] == 'O' && buf[1] == 'K' && buf[2] == '\0') | |
23860348 | 691 | /* "OK" - definitly OK. */ |
d471ea57 AC |
692 | return PACKET_OK; |
693 | if (buf[0] == 'E' | |
694 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
695 | && buf[3] == '\0') | |
23860348 | 696 | /* "Enn" - definitly an error. */ |
d471ea57 | 697 | return PACKET_ERROR; |
23860348 | 698 | /* The packet may or may not be OK. Just assume it is. */ |
d471ea57 AC |
699 | return PACKET_OK; |
700 | } | |
701 | else | |
702 | { | |
23860348 | 703 | /* The stub does not support the packet. */ |
d471ea57 AC |
704 | switch (config->support) |
705 | { | |
706 | case PACKET_ENABLE: | |
7f19b9a2 | 707 | if (config->detect == AUTO_BOOLEAN_AUTO) |
d471ea57 | 708 | /* If the stub previously indicated that the packet was |
23860348 | 709 | supported then there is a protocol error.. */ |
8a3fe4f8 | 710 | error (_("Protocol error: %s (%s) conflicting enabled responses."), |
d471ea57 AC |
711 | config->name, config->title); |
712 | else | |
23860348 | 713 | /* The user set it wrong. */ |
8a3fe4f8 | 714 | error (_("Enabled packet %s (%s) not recognized by stub"), |
d471ea57 AC |
715 | config->name, config->title); |
716 | break; | |
717 | case PACKET_SUPPORT_UNKNOWN: | |
718 | if (remote_debug) | |
719 | fprintf_unfiltered (gdb_stdlog, | |
720 | "Packet %s (%s) is NOT supported\n", | |
721 | config->name, config->title); | |
722 | config->support = PACKET_DISABLE; | |
723 | break; | |
724 | case PACKET_DISABLE: | |
725 | break; | |
726 | } | |
727 | return PACKET_UNKNOWN; | |
5a2468f5 JM |
728 | } |
729 | } | |
730 | ||
444abaca DJ |
731 | enum { |
732 | PACKET_vCont = 0, | |
733 | PACKET_X, | |
734 | PACKET_qSymbol, | |
735 | PACKET_P, | |
736 | PACKET_p, | |
737 | PACKET_Z0, | |
738 | PACKET_Z1, | |
739 | PACKET_Z2, | |
740 | PACKET_Z3, | |
741 | PACKET_Z4, | |
742 | PACKET_qPart_auxv, | |
743 | PACKET_qGetTLSAddr, | |
744 | PACKET_MAX | |
745 | }; | |
506fb367 | 746 | |
444abaca | 747 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 MS |
748 | |
749 | static void | |
444abaca DJ |
750 | set_remote_protocol_packet_cmd (char *args, int from_tty, |
751 | struct cmd_list_element *c) | |
dc8acb97 | 752 | { |
444abaca | 753 | struct packet_config *packet; |
dc8acb97 | 754 | |
444abaca DJ |
755 | for (packet = remote_protocol_packets; |
756 | packet < &remote_protocol_packets[PACKET_MAX]; | |
757 | packet++) | |
758 | { | |
759 | if (&packet->detect == c->var) | |
760 | { | |
761 | update_packet_config (packet); | |
762 | return; | |
763 | } | |
764 | } | |
765 | internal_error (__FILE__, __LINE__, "Could not find config for %s", | |
766 | c->name); | |
dc8acb97 MS |
767 | } |
768 | ||
5a2468f5 | 769 | static void |
444abaca DJ |
770 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
771 | struct cmd_list_element *c, | |
772 | const char *value) | |
5a2468f5 | 773 | { |
444abaca | 774 | struct packet_config *packet; |
5a2468f5 | 775 | |
444abaca DJ |
776 | for (packet = remote_protocol_packets; |
777 | packet < &remote_protocol_packets[PACKET_MAX]; | |
778 | packet++) | |
779 | { | |
780 | if (&packet->detect == c->var) | |
781 | { | |
782 | show_packet_config_cmd (packet); | |
783 | return; | |
784 | } | |
785 | } | |
786 | internal_error (__FILE__, __LINE__, "Could not find config for %s", | |
787 | c->name); | |
5a2468f5 JM |
788 | } |
789 | ||
d471ea57 AC |
790 | /* Should we try one of the 'Z' requests? */ |
791 | ||
792 | enum Z_packet_type | |
793 | { | |
794 | Z_PACKET_SOFTWARE_BP, | |
795 | Z_PACKET_HARDWARE_BP, | |
796 | Z_PACKET_WRITE_WP, | |
797 | Z_PACKET_READ_WP, | |
798 | Z_PACKET_ACCESS_WP, | |
799 | NR_Z_PACKET_TYPES | |
800 | }; | |
96baa820 | 801 | |
d471ea57 | 802 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 803 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 804 | |
7f19b9a2 | 805 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
806 | |
807 | static void | |
fba45db2 KB |
808 | set_remote_protocol_Z_packet_cmd (char *args, int from_tty, |
809 | struct cmd_list_element *c) | |
96baa820 | 810 | { |
d471ea57 AC |
811 | int i; |
812 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
813 | { | |
444abaca DJ |
814 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
815 | update_packet_config (&remote_protocol_packets[PACKET_Z0 + i]); | |
d471ea57 | 816 | } |
96baa820 JM |
817 | } |
818 | ||
819 | static void | |
08546159 AC |
820 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
821 | struct cmd_list_element *c, | |
822 | const char *value) | |
96baa820 | 823 | { |
d471ea57 AC |
824 | int i; |
825 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) | |
826 | { | |
444abaca | 827 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 828 | } |
96baa820 JM |
829 | } |
830 | ||
9d1f7ab2 MS |
831 | /* Should we try the 'ThreadInfo' query packet? |
832 | ||
833 | This variable (NOT available to the user: auto-detect only!) | |
834 | determines whether GDB will use the new, simpler "ThreadInfo" | |
835 | query or the older, more complex syntax for thread queries. | |
802188a7 | 836 | This is an auto-detect variable (set to true at each connect, |
9d1f7ab2 MS |
837 | and set to false when the target fails to recognize it). */ |
838 | ||
839 | static int use_threadinfo_query; | |
840 | static int use_threadextra_query; | |
841 | ||
23860348 | 842 | /* Tokens for use by the asynchronous signal handlers for SIGINT. */ |
ae44c0c4 AC |
843 | static void *sigint_remote_twice_token; |
844 | static void *sigint_remote_token; | |
43ff13b4 | 845 | |
c906108c SS |
846 | /* These are pointers to hook functions that may be set in order to |
847 | modify resume/wait behavior for a particular architecture. */ | |
848 | ||
9a4105ab AC |
849 | void (*deprecated_target_resume_hook) (void); |
850 | void (*deprecated_target_wait_loop_hook) (void); | |
c906108c SS |
851 | \f |
852 | ||
c5aa993b | 853 | |
c906108c SS |
854 | /* These are the threads which we last sent to the remote system. |
855 | -1 for all or -2 for not sent yet. */ | |
856 | static int general_thread; | |
cce74817 | 857 | static int continue_thread; |
c906108c SS |
858 | |
859 | /* Call this function as a result of | |
860 | 1) A halt indication (T packet) containing a thread id | |
861 | 2) A direct query of currthread | |
862 | 3) Successful execution of set thread | |
863 | */ | |
864 | ||
865 | static void | |
fba45db2 | 866 | record_currthread (int currthread) |
c906108c | 867 | { |
c906108c | 868 | general_thread = currthread; |
cce74817 | 869 | |
c906108c SS |
870 | /* If this is a new thread, add it to GDB's thread list. |
871 | If we leave it up to WFI to do this, bad things will happen. */ | |
39f77062 | 872 | if (!in_thread_list (pid_to_ptid (currthread))) |
0f71a2f6 | 873 | { |
39f77062 | 874 | add_thread (pid_to_ptid (currthread)); |
8b93c638 | 875 | ui_out_text (uiout, "[New "); |
39f77062 | 876 | ui_out_text (uiout, target_pid_to_str (pid_to_ptid (currthread))); |
8b93c638 | 877 | ui_out_text (uiout, "]\n"); |
0f71a2f6 | 878 | } |
c906108c SS |
879 | } |
880 | ||
881 | #define MAGIC_NULL_PID 42000 | |
882 | ||
883 | static void | |
fba45db2 | 884 | set_thread (int th, int gen) |
c906108c | 885 | { |
d01949b6 AC |
886 | struct remote_state *rs = get_remote_state (); |
887 | char *buf = alloca (rs->remote_packet_size); | |
cce74817 | 888 | int state = gen ? general_thread : continue_thread; |
c906108c SS |
889 | |
890 | if (state == th) | |
891 | return; | |
892 | ||
893 | buf[0] = 'H'; | |
894 | buf[1] = gen ? 'g' : 'c'; | |
895 | if (th == MAGIC_NULL_PID) | |
896 | { | |
897 | buf[2] = '0'; | |
898 | buf[3] = '\0'; | |
899 | } | |
900 | else if (th < 0) | |
ecbc58df | 901 | xsnprintf (&buf[2], rs->remote_packet_size - 2, "-%x", -th); |
c906108c | 902 | else |
ecbc58df | 903 | xsnprintf (&buf[2], rs->remote_packet_size - 2, "%x", th); |
c906108c | 904 | putpkt (buf); |
24b06219 | 905 | getpkt (buf, rs->remote_packet_size, 0); |
c906108c | 906 | if (gen) |
c5aa993b | 907 | general_thread = th; |
c906108c | 908 | else |
cce74817 | 909 | continue_thread = th; |
c906108c SS |
910 | } |
911 | \f | |
912 | /* Return nonzero if the thread TH is still alive on the remote system. */ | |
913 | ||
914 | static int | |
39f77062 | 915 | remote_thread_alive (ptid_t ptid) |
c906108c | 916 | { |
39f77062 | 917 | int tid = PIDGET (ptid); |
cce74817 | 918 | char buf[16]; |
c906108c | 919 | |
cce74817 | 920 | if (tid < 0) |
ecbc58df | 921 | xsnprintf (buf, sizeof (buf), "T-%08x", -tid); |
c906108c | 922 | else |
ecbc58df | 923 | xsnprintf (buf, sizeof (buf), "T%08x", tid); |
c906108c | 924 | putpkt (buf); |
c2d11a7d | 925 | getpkt (buf, sizeof (buf), 0); |
c906108c SS |
926 | return (buf[0] == 'O' && buf[1] == 'K'); |
927 | } | |
928 | ||
929 | /* About these extended threadlist and threadinfo packets. They are | |
930 | variable length packets but, the fields within them are often fixed | |
931 | length. They are redundent enough to send over UDP as is the | |
932 | remote protocol in general. There is a matching unit test module | |
933 | in libstub. */ | |
934 | ||
cce74817 JM |
935 | #define OPAQUETHREADBYTES 8 |
936 | ||
937 | /* a 64 bit opaque identifier */ | |
938 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
939 | ||
23860348 MS |
940 | /* WARNING: This threadref data structure comes from the remote O.S., |
941 | libstub protocol encoding, and remote.c. it is not particularly | |
942 | changable. */ | |
cce74817 JM |
943 | |
944 | /* Right now, the internal structure is int. We want it to be bigger. | |
945 | Plan to fix this. | |
c5aa993b | 946 | */ |
cce74817 | 947 | |
23860348 | 948 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 949 | |
9d1f7ab2 | 950 | /* gdb_ext_thread_info is an internal GDB data structure which is |
23860348 | 951 | equivalint to the reply of the remote threadinfo packet. */ |
cce74817 JM |
952 | |
953 | struct gdb_ext_thread_info | |
c5aa993b | 954 | { |
23860348 MS |
955 | threadref threadid; /* External form of thread reference. */ |
956 | int active; /* Has state interesting to GDB? | |
957 | regs, stack. */ | |
958 | char display[256]; /* Brief state display, name, | |
cedea757 | 959 | blocked/suspended. */ |
23860348 MS |
960 | char shortname[32]; /* To be used to name threads. */ |
961 | char more_display[256]; /* Long info, statistics, queue depth, | |
962 | whatever. */ | |
c5aa993b | 963 | }; |
cce74817 JM |
964 | |
965 | /* The volume of remote transfers can be limited by submitting | |
966 | a mask containing bits specifying the desired information. | |
967 | Use a union of these values as the 'selection' parameter to | |
968 | get_thread_info. FIXME: Make these TAG names more thread specific. | |
c5aa993b | 969 | */ |
cce74817 JM |
970 | |
971 | #define TAG_THREADID 1 | |
972 | #define TAG_EXISTS 2 | |
973 | #define TAG_DISPLAY 4 | |
974 | #define TAG_THREADNAME 8 | |
c5aa993b | 975 | #define TAG_MOREDISPLAY 16 |
cce74817 | 976 | |
23860348 | 977 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 978 | |
b2dd6311 | 979 | char *unpack_varlen_hex (char *buff, ULONGEST *result); |
cce74817 | 980 | |
a14ed312 | 981 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 982 | |
a14ed312 | 983 | static char *pack_nibble (char *buf, int nibble); |
cce74817 | 984 | |
23860348 | 985 | static char *pack_hex_byte (char *pkt, int /* unsigned char */ byte); |
cce74817 | 986 | |
a14ed312 | 987 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 988 | |
a14ed312 | 989 | static char *pack_int (char *buf, int value); |
cce74817 | 990 | |
a14ed312 | 991 | static char *unpack_int (char *buf, int *value); |
cce74817 | 992 | |
a14ed312 | 993 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 994 | |
23860348 | 995 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 996 | |
23860348 | 997 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 998 | |
23860348 | 999 | void int_to_threadref (threadref *id, int value); |
cce74817 | 1000 | |
23860348 | 1001 | static int threadref_to_int (threadref *ref); |
cce74817 | 1002 | |
23860348 | 1003 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 1004 | |
23860348 | 1005 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 1006 | |
23860348 MS |
1007 | static char *pack_threadinfo_request (char *pkt, int mode, |
1008 | threadref *id); | |
cce74817 | 1009 | |
a14ed312 | 1010 | static int remote_unpack_thread_info_response (char *pkt, |
23860348 | 1011 | threadref *expectedref, |
a14ed312 KB |
1012 | struct gdb_ext_thread_info |
1013 | *info); | |
cce74817 JM |
1014 | |
1015 | ||
23860348 MS |
1016 | static int remote_get_threadinfo (threadref *threadid, |
1017 | int fieldset, /*TAG mask */ | |
a14ed312 | 1018 | struct gdb_ext_thread_info *info); |
cce74817 | 1019 | |
a14ed312 KB |
1020 | static char *pack_threadlist_request (char *pkt, int startflag, |
1021 | int threadcount, | |
23860348 | 1022 | threadref *nextthread); |
cce74817 | 1023 | |
a14ed312 KB |
1024 | static int parse_threadlist_response (char *pkt, |
1025 | int result_limit, | |
23860348 MS |
1026 | threadref *original_echo, |
1027 | threadref *resultlist, | |
1028 | int *doneflag); | |
cce74817 | 1029 | |
a14ed312 | 1030 | static int remote_get_threadlist (int startflag, |
23860348 | 1031 | threadref *nextthread, |
a14ed312 KB |
1032 | int result_limit, |
1033 | int *done, | |
23860348 MS |
1034 | int *result_count, |
1035 | threadref *threadlist); | |
cce74817 | 1036 | |
23860348 | 1037 | typedef int (*rmt_thread_action) (threadref *ref, void *context); |
cce74817 | 1038 | |
a14ed312 KB |
1039 | static int remote_threadlist_iterator (rmt_thread_action stepfunction, |
1040 | void *context, int looplimit); | |
cce74817 | 1041 | |
23860348 | 1042 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 1043 | |
23860348 | 1044 | /* Encode 64 bits in 16 chars of hex. */ |
c906108c SS |
1045 | |
1046 | static const char hexchars[] = "0123456789abcdef"; | |
1047 | ||
1048 | static int | |
fba45db2 | 1049 | ishex (int ch, int *val) |
c906108c SS |
1050 | { |
1051 | if ((ch >= 'a') && (ch <= 'f')) | |
1052 | { | |
1053 | *val = ch - 'a' + 10; | |
1054 | return 1; | |
1055 | } | |
1056 | if ((ch >= 'A') && (ch <= 'F')) | |
1057 | { | |
1058 | *val = ch - 'A' + 10; | |
1059 | return 1; | |
1060 | } | |
1061 | if ((ch >= '0') && (ch <= '9')) | |
1062 | { | |
1063 | *val = ch - '0'; | |
1064 | return 1; | |
1065 | } | |
1066 | return 0; | |
1067 | } | |
1068 | ||
1069 | static int | |
fba45db2 | 1070 | stubhex (int ch) |
c906108c SS |
1071 | { |
1072 | if (ch >= 'a' && ch <= 'f') | |
1073 | return ch - 'a' + 10; | |
1074 | if (ch >= '0' && ch <= '9') | |
1075 | return ch - '0'; | |
1076 | if (ch >= 'A' && ch <= 'F') | |
1077 | return ch - 'A' + 10; | |
1078 | return -1; | |
1079 | } | |
1080 | ||
1081 | static int | |
fba45db2 | 1082 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
1083 | { |
1084 | int nibble; | |
1085 | int retval = 0; | |
1086 | ||
1087 | while (fieldlength) | |
1088 | { | |
1089 | nibble = stubhex (*buff++); | |
1090 | retval |= nibble; | |
1091 | fieldlength--; | |
1092 | if (fieldlength) | |
1093 | retval = retval << 4; | |
1094 | } | |
1095 | return retval; | |
1096 | } | |
1097 | ||
1098 | char * | |
fba45db2 | 1099 | unpack_varlen_hex (char *buff, /* packet to parse */ |
b2dd6311 | 1100 | ULONGEST *result) |
c906108c SS |
1101 | { |
1102 | int nibble; | |
1103 | int retval = 0; | |
1104 | ||
1105 | while (ishex (*buff, &nibble)) | |
1106 | { | |
1107 | buff++; | |
1108 | retval = retval << 4; | |
1109 | retval |= nibble & 0x0f; | |
1110 | } | |
1111 | *result = retval; | |
1112 | return buff; | |
1113 | } | |
1114 | ||
1115 | static char * | |
fba45db2 | 1116 | unpack_nibble (char *buf, int *val) |
c906108c SS |
1117 | { |
1118 | ishex (*buf++, val); | |
1119 | return buf; | |
1120 | } | |
1121 | ||
1122 | static char * | |
fba45db2 | 1123 | pack_nibble (char *buf, int nibble) |
c906108c SS |
1124 | { |
1125 | *buf++ = hexchars[(nibble & 0x0f)]; | |
1126 | return buf; | |
1127 | } | |
1128 | ||
1129 | static char * | |
fba45db2 | 1130 | pack_hex_byte (char *pkt, int byte) |
c906108c SS |
1131 | { |
1132 | *pkt++ = hexchars[(byte >> 4) & 0xf]; | |
1133 | *pkt++ = hexchars[(byte & 0xf)]; | |
1134 | return pkt; | |
1135 | } | |
1136 | ||
1137 | static char * | |
fba45db2 | 1138 | unpack_byte (char *buf, int *value) |
c906108c SS |
1139 | { |
1140 | *value = stub_unpack_int (buf, 2); | |
1141 | return buf + 2; | |
1142 | } | |
1143 | ||
1144 | static char * | |
fba45db2 | 1145 | pack_int (char *buf, int value) |
c906108c SS |
1146 | { |
1147 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
1148 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
1149 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
1150 | buf = pack_hex_byte (buf, (value & 0xff)); | |
1151 | return buf; | |
1152 | } | |
1153 | ||
1154 | static char * | |
fba45db2 | 1155 | unpack_int (char *buf, int *value) |
c906108c SS |
1156 | { |
1157 | *value = stub_unpack_int (buf, 8); | |
1158 | return buf + 8; | |
1159 | } | |
1160 | ||
23860348 | 1161 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 1162 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
1163 | |
1164 | static char * | |
fba45db2 | 1165 | pack_string (char *pkt, char *string) |
c906108c SS |
1166 | { |
1167 | char ch; | |
1168 | int len; | |
1169 | ||
1170 | len = strlen (string); | |
1171 | if (len > 200) | |
23860348 | 1172 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
1173 | pkt = pack_hex_byte (pkt, len); |
1174 | while (len-- > 0) | |
1175 | { | |
1176 | ch = *string++; | |
1177 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 1178 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
1179 | *pkt++ = ch; |
1180 | } | |
1181 | return pkt; | |
1182 | } | |
1183 | #endif /* 0 (unused) */ | |
1184 | ||
1185 | static char * | |
fba45db2 | 1186 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
1187 | { |
1188 | while (length--) | |
1189 | *dest++ = *src++; | |
1190 | *dest = '\0'; | |
1191 | return src; | |
1192 | } | |
1193 | ||
1194 | static char * | |
fba45db2 | 1195 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
1196 | { |
1197 | char *limit; | |
1198 | unsigned char *altid; | |
1199 | ||
1200 | altid = (unsigned char *) id; | |
1201 | limit = pkt + BUF_THREAD_ID_SIZE; | |
1202 | while (pkt < limit) | |
1203 | pkt = pack_hex_byte (pkt, *altid++); | |
1204 | return pkt; | |
1205 | } | |
1206 | ||
1207 | ||
1208 | static char * | |
fba45db2 | 1209 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
1210 | { |
1211 | char *altref; | |
1212 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
1213 | int x, y; | |
1214 | ||
1215 | altref = (char *) id; | |
1216 | ||
1217 | while (inbuf < limit) | |
1218 | { | |
1219 | x = stubhex (*inbuf++); | |
1220 | y = stubhex (*inbuf++); | |
1221 | *altref++ = (x << 4) | y; | |
1222 | } | |
1223 | return inbuf; | |
1224 | } | |
1225 | ||
1226 | /* Externally, threadrefs are 64 bits but internally, they are still | |
1227 | ints. This is due to a mismatch of specifications. We would like | |
1228 | to use 64bit thread references internally. This is an adapter | |
1229 | function. */ | |
1230 | ||
1231 | void | |
fba45db2 | 1232 | int_to_threadref (threadref *id, int value) |
c906108c SS |
1233 | { |
1234 | unsigned char *scan; | |
1235 | ||
1236 | scan = (unsigned char *) id; | |
1237 | { | |
1238 | int i = 4; | |
1239 | while (i--) | |
1240 | *scan++ = 0; | |
1241 | } | |
1242 | *scan++ = (value >> 24) & 0xff; | |
1243 | *scan++ = (value >> 16) & 0xff; | |
1244 | *scan++ = (value >> 8) & 0xff; | |
1245 | *scan++ = (value & 0xff); | |
1246 | } | |
1247 | ||
1248 | static int | |
fba45db2 | 1249 | threadref_to_int (threadref *ref) |
c906108c SS |
1250 | { |
1251 | int i, value = 0; | |
1252 | unsigned char *scan; | |
1253 | ||
cfd77fa1 | 1254 | scan = *ref; |
c906108c SS |
1255 | scan += 4; |
1256 | i = 4; | |
1257 | while (i-- > 0) | |
1258 | value = (value << 8) | ((*scan++) & 0xff); | |
1259 | return value; | |
1260 | } | |
1261 | ||
1262 | static void | |
fba45db2 | 1263 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
1264 | { |
1265 | int i; | |
1266 | unsigned char *csrc, *cdest; | |
1267 | ||
1268 | csrc = (unsigned char *) src; | |
1269 | cdest = (unsigned char *) dest; | |
1270 | i = 8; | |
1271 | while (i--) | |
1272 | *cdest++ = *csrc++; | |
1273 | } | |
1274 | ||
1275 | static int | |
fba45db2 | 1276 | threadmatch (threadref *dest, threadref *src) |
c906108c | 1277 | { |
23860348 | 1278 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
1279 | #if 0 |
1280 | unsigned char *srcp, *destp; | |
1281 | int i, result; | |
1282 | srcp = (char *) src; | |
1283 | destp = (char *) dest; | |
1284 | ||
1285 | result = 1; | |
1286 | while (i-- > 0) | |
1287 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
1288 | return result; | |
1289 | #endif | |
1290 | return 1; | |
1291 | } | |
1292 | ||
1293 | /* | |
c5aa993b JM |
1294 | threadid:1, # always request threadid |
1295 | context_exists:2, | |
1296 | display:4, | |
1297 | unique_name:8, | |
1298 | more_display:16 | |
1299 | */ | |
c906108c SS |
1300 | |
1301 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
1302 | ||
1303 | static char * | |
fba45db2 | 1304 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 1305 | { |
23860348 MS |
1306 | *pkt++ = 'q'; /* Info Query */ |
1307 | *pkt++ = 'P'; /* process or thread info */ | |
1308 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 1309 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 1310 | *pkt = '\0'; /* terminate */ |
c906108c SS |
1311 | return pkt; |
1312 | } | |
1313 | ||
23860348 | 1314 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 1315 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 1316 | add more fields as time goes by. */ |
c906108c | 1317 | |
23860348 | 1318 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 1319 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 1320 | fetch registers and its stack? */ |
c5aa993b | 1321 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 1322 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 1323 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 1324 | the process. */ |
c906108c SS |
1325 | |
1326 | static int | |
fba45db2 KB |
1327 | remote_unpack_thread_info_response (char *pkt, threadref *expectedref, |
1328 | struct gdb_ext_thread_info *info) | |
c906108c | 1329 | { |
d01949b6 | 1330 | struct remote_state *rs = get_remote_state (); |
c906108c | 1331 | int mask, length; |
cfd77fa1 | 1332 | int tag; |
c906108c | 1333 | threadref ref; |
24b06219 | 1334 | char *limit = pkt + rs->remote_packet_size; /* Plausible parsing limit. */ |
c906108c SS |
1335 | int retval = 1; |
1336 | ||
23860348 | 1337 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
1338 | info->active = 0; |
1339 | info->display[0] = '\0'; | |
1340 | info->shortname[0] = '\0'; | |
1341 | info->more_display[0] = '\0'; | |
1342 | ||
23860348 MS |
1343 | /* Assume the characters indicating the packet type have been |
1344 | stripped. */ | |
c906108c SS |
1345 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
1346 | pkt = unpack_threadid (pkt, &ref); | |
1347 | ||
1348 | if (mask == 0) | |
8a3fe4f8 | 1349 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 1350 | if (!threadmatch (&ref, expectedref)) |
23860348 | 1351 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 1352 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
1353 | return 0; |
1354 | } | |
1355 | copy_threadref (&info->threadid, &ref); | |
1356 | ||
23860348 | 1357 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 1358 | |
23860348 MS |
1359 | /* Packets are terminated with nulls. */ |
1360 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
1361 | { |
1362 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
1363 | pkt = unpack_byte (pkt, &length); /* length */ |
1364 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 1365 | { |
8a3fe4f8 | 1366 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
1367 | retval = 0; |
1368 | break; | |
1369 | } | |
1370 | if (tag == TAG_THREADID) | |
1371 | { | |
1372 | if (length != 16) | |
1373 | { | |
8a3fe4f8 | 1374 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
1375 | retval = 0; |
1376 | break; | |
1377 | } | |
1378 | pkt = unpack_threadid (pkt, &ref); | |
1379 | mask = mask & ~TAG_THREADID; | |
1380 | continue; | |
1381 | } | |
1382 | if (tag == TAG_EXISTS) | |
1383 | { | |
1384 | info->active = stub_unpack_int (pkt, length); | |
1385 | pkt += length; | |
1386 | mask = mask & ~(TAG_EXISTS); | |
1387 | if (length > 8) | |
1388 | { | |
8a3fe4f8 | 1389 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
1390 | retval = 0; |
1391 | break; | |
1392 | } | |
1393 | continue; | |
1394 | } | |
1395 | if (tag == TAG_THREADNAME) | |
1396 | { | |
1397 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
1398 | mask = mask & ~TAG_THREADNAME; | |
1399 | continue; | |
1400 | } | |
1401 | if (tag == TAG_DISPLAY) | |
1402 | { | |
1403 | pkt = unpack_string (pkt, &info->display[0], length); | |
1404 | mask = mask & ~TAG_DISPLAY; | |
1405 | continue; | |
1406 | } | |
1407 | if (tag == TAG_MOREDISPLAY) | |
1408 | { | |
1409 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
1410 | mask = mask & ~TAG_MOREDISPLAY; | |
1411 | continue; | |
1412 | } | |
8a3fe4f8 | 1413 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 1414 | break; /* Not a tag we know about. */ |
c906108c SS |
1415 | } |
1416 | return retval; | |
1417 | } | |
1418 | ||
1419 | static int | |
fba45db2 KB |
1420 | remote_get_threadinfo (threadref *threadid, int fieldset, /* TAG mask */ |
1421 | struct gdb_ext_thread_info *info) | |
c906108c | 1422 | { |
d01949b6 | 1423 | struct remote_state *rs = get_remote_state (); |
c906108c | 1424 | int result; |
d01949b6 | 1425 | char *threadinfo_pkt = alloca (rs->remote_packet_size); |
c906108c SS |
1426 | |
1427 | pack_threadinfo_request (threadinfo_pkt, fieldset, threadid); | |
1428 | putpkt (threadinfo_pkt); | |
24b06219 | 1429 | getpkt (threadinfo_pkt, rs->remote_packet_size, 0); |
23860348 MS |
1430 | result = remote_unpack_thread_info_response (threadinfo_pkt + 2, |
1431 | threadid, info); | |
c906108c SS |
1432 | return result; |
1433 | } | |
1434 | ||
c906108c SS |
1435 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
1436 | ||
1437 | static char * | |
fba45db2 KB |
1438 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
1439 | threadref *nextthread) | |
c906108c SS |
1440 | { |
1441 | *pkt++ = 'q'; /* info query packet */ | |
1442 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 1443 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
1444 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
1445 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
1446 | *pkt = '\0'; | |
1447 | return pkt; | |
1448 | } | |
1449 | ||
1450 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
1451 | ||
1452 | static int | |
fba45db2 KB |
1453 | parse_threadlist_response (char *pkt, int result_limit, |
1454 | threadref *original_echo, threadref *resultlist, | |
1455 | int *doneflag) | |
c906108c | 1456 | { |
d01949b6 | 1457 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
1458 | char *limit; |
1459 | int count, resultcount, done; | |
1460 | ||
1461 | resultcount = 0; | |
1462 | /* Assume the 'q' and 'M chars have been stripped. */ | |
24b06219 | 1463 | limit = pkt + (rs->remote_packet_size - BUF_THREAD_ID_SIZE); |
23860348 | 1464 | /* done parse past here */ |
c906108c SS |
1465 | pkt = unpack_byte (pkt, &count); /* count field */ |
1466 | pkt = unpack_nibble (pkt, &done); | |
1467 | /* The first threadid is the argument threadid. */ | |
1468 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
1469 | while ((count-- > 0) && (pkt < limit)) | |
1470 | { | |
1471 | pkt = unpack_threadid (pkt, resultlist++); | |
1472 | if (resultcount++ >= result_limit) | |
1473 | break; | |
1474 | } | |
1475 | if (doneflag) | |
1476 | *doneflag = done; | |
1477 | return resultcount; | |
1478 | } | |
1479 | ||
1480 | static int | |
fba45db2 KB |
1481 | remote_get_threadlist (int startflag, threadref *nextthread, int result_limit, |
1482 | int *done, int *result_count, threadref *threadlist) | |
c906108c | 1483 | { |
d01949b6 | 1484 | struct remote_state *rs = get_remote_state (); |
c906108c | 1485 | static threadref echo_nextthread; |
d01949b6 AC |
1486 | char *threadlist_packet = alloca (rs->remote_packet_size); |
1487 | char *t_response = alloca (rs->remote_packet_size); | |
c906108c SS |
1488 | int result = 1; |
1489 | ||
23860348 | 1490 | /* Trancate result limit to be smaller than the packet size. */ |
24b06219 MK |
1491 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) >= rs->remote_packet_size) |
1492 | result_limit = (rs->remote_packet_size / BUF_THREAD_ID_SIZE) - 2; | |
c906108c SS |
1493 | |
1494 | pack_threadlist_request (threadlist_packet, | |
1495 | startflag, result_limit, nextthread); | |
1496 | putpkt (threadlist_packet); | |
24b06219 | 1497 | getpkt (t_response, rs->remote_packet_size, 0); |
c906108c SS |
1498 | |
1499 | *result_count = | |
1500 | parse_threadlist_response (t_response + 2, result_limit, &echo_nextthread, | |
1501 | threadlist, done); | |
1502 | ||
1503 | if (!threadmatch (&echo_nextthread, nextthread)) | |
1504 | { | |
23860348 MS |
1505 | /* FIXME: This is a good reason to drop the packet. */ |
1506 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
1507 | /* Possabilities : |
1508 | retransmit immediatly - race conditions | |
1509 | retransmit after timeout - yes | |
1510 | exit | |
1511 | wait for packet, then exit | |
1512 | */ | |
8a3fe4f8 | 1513 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 1514 | return 0; /* I choose simply exiting. */ |
c906108c SS |
1515 | } |
1516 | if (*result_count <= 0) | |
1517 | { | |
1518 | if (*done != 1) | |
1519 | { | |
8a3fe4f8 | 1520 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
1521 | result = 0; |
1522 | } | |
1523 | return result; /* break; */ | |
1524 | } | |
1525 | if (*result_count > result_limit) | |
1526 | { | |
1527 | *result_count = 0; | |
8a3fe4f8 | 1528 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
1529 | return 0; |
1530 | } | |
1531 | return result; | |
1532 | } | |
1533 | ||
23860348 MS |
1534 | /* This is the interface between remote and threads, remotes upper |
1535 | interface. */ | |
c906108c SS |
1536 | |
1537 | /* remote_find_new_threads retrieves the thread list and for each | |
1538 | thread in the list, looks up the thread in GDB's internal list, | |
1539 | ading the thread if it does not already exist. This involves | |
1540 | getting partial thread lists from the remote target so, polling the | |
1541 | quit_flag is required. */ | |
1542 | ||
1543 | ||
23860348 | 1544 | /* About this many threadisds fit in a packet. */ |
c906108c SS |
1545 | |
1546 | #define MAXTHREADLISTRESULTS 32 | |
1547 | ||
1548 | static int | |
fba45db2 KB |
1549 | remote_threadlist_iterator (rmt_thread_action stepfunction, void *context, |
1550 | int looplimit) | |
c906108c SS |
1551 | { |
1552 | int done, i, result_count; | |
1553 | int startflag = 1; | |
1554 | int result = 1; | |
1555 | int loopcount = 0; | |
1556 | static threadref nextthread; | |
1557 | static threadref resultthreadlist[MAXTHREADLISTRESULTS]; | |
1558 | ||
1559 | done = 0; | |
1560 | while (!done) | |
1561 | { | |
1562 | if (loopcount++ > looplimit) | |
1563 | { | |
1564 | result = 0; | |
8a3fe4f8 | 1565 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
1566 | break; |
1567 | } | |
1568 | if (!remote_get_threadlist (startflag, &nextthread, MAXTHREADLISTRESULTS, | |
1569 | &done, &result_count, resultthreadlist)) | |
1570 | { | |
1571 | result = 0; | |
1572 | break; | |
1573 | } | |
23860348 | 1574 | /* Clear for later iterations. */ |
c906108c SS |
1575 | startflag = 0; |
1576 | /* Setup to resume next batch of thread references, set nextthread. */ | |
1577 | if (result_count >= 1) | |
1578 | copy_threadref (&nextthread, &resultthreadlist[result_count - 1]); | |
1579 | i = 0; | |
1580 | while (result_count--) | |
1581 | if (!(result = (*stepfunction) (&resultthreadlist[i++], context))) | |
1582 | break; | |
1583 | } | |
1584 | return result; | |
1585 | } | |
1586 | ||
1587 | static int | |
fba45db2 | 1588 | remote_newthread_step (threadref *ref, void *context) |
c906108c | 1589 | { |
39f77062 | 1590 | ptid_t ptid; |
c906108c | 1591 | |
39f77062 KB |
1592 | ptid = pid_to_ptid (threadref_to_int (ref)); |
1593 | ||
1594 | if (!in_thread_list (ptid)) | |
1595 | add_thread (ptid); | |
c906108c SS |
1596 | return 1; /* continue iterator */ |
1597 | } | |
1598 | ||
1599 | #define CRAZY_MAX_THREADS 1000 | |
1600 | ||
39f77062 KB |
1601 | static ptid_t |
1602 | remote_current_thread (ptid_t oldpid) | |
c906108c | 1603 | { |
d01949b6 AC |
1604 | struct remote_state *rs = get_remote_state (); |
1605 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
1606 | |
1607 | putpkt ("qC"); | |
24b06219 | 1608 | getpkt (buf, rs->remote_packet_size, 0); |
c906108c | 1609 | if (buf[0] == 'Q' && buf[1] == 'C') |
c273b20f JB |
1610 | /* Use strtoul here, so we'll correctly parse values whose highest |
1611 | bit is set. The protocol carries them as a simple series of | |
1612 | hex digits; in the absence of a sign, strtol will see such | |
1613 | values as positive numbers out of range for signed 'long', and | |
1614 | return LONG_MAX to indicate an overflow. */ | |
1615 | return pid_to_ptid (strtoul (&buf[2], NULL, 16)); | |
c906108c SS |
1616 | else |
1617 | return oldpid; | |
1618 | } | |
1619 | ||
802188a7 RM |
1620 | /* Find new threads for info threads command. |
1621 | * Original version, using John Metzler's thread protocol. | |
9d1f7ab2 | 1622 | */ |
cce74817 JM |
1623 | |
1624 | static void | |
fba45db2 | 1625 | remote_find_new_threads (void) |
c906108c | 1626 | { |
c5aa993b JM |
1627 | remote_threadlist_iterator (remote_newthread_step, 0, |
1628 | CRAZY_MAX_THREADS); | |
39f77062 KB |
1629 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) /* ack ack ack */ |
1630 | inferior_ptid = remote_current_thread (inferior_ptid); | |
c906108c SS |
1631 | } |
1632 | ||
9d1f7ab2 MS |
1633 | /* |
1634 | * Find all threads for info threads command. | |
1635 | * Uses new thread protocol contributed by Cisco. | |
1636 | * Falls back and attempts to use the older method (above) | |
1637 | * if the target doesn't respond to the new method. | |
1638 | */ | |
1639 | ||
0f71a2f6 JM |
1640 | static void |
1641 | remote_threads_info (void) | |
1642 | { | |
d01949b6 AC |
1643 | struct remote_state *rs = get_remote_state (); |
1644 | char *buf = alloca (rs->remote_packet_size); | |
085dd6e6 | 1645 | char *bufp; |
0f71a2f6 JM |
1646 | int tid; |
1647 | ||
1648 | if (remote_desc == 0) /* paranoia */ | |
8a3fe4f8 | 1649 | error (_("Command can only be used when connected to the remote target.")); |
0f71a2f6 | 1650 | |
9d1f7ab2 MS |
1651 | if (use_threadinfo_query) |
1652 | { | |
1653 | putpkt ("qfThreadInfo"); | |
1654 | bufp = buf; | |
24b06219 | 1655 | getpkt (bufp, rs->remote_packet_size, 0); |
9d1f7ab2 | 1656 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 1657 | { |
9d1f7ab2 MS |
1658 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
1659 | { | |
1660 | do | |
1661 | { | |
c273b20f JB |
1662 | /* Use strtoul here, so we'll correctly parse values |
1663 | whose highest bit is set. The protocol carries | |
1664 | them as a simple series of hex digits; in the | |
1665 | absence of a sign, strtol will see such values as | |
1666 | positive numbers out of range for signed 'long', | |
1667 | and return LONG_MAX to indicate an overflow. */ | |
1668 | tid = strtoul (bufp, &bufp, 16); | |
39f77062 KB |
1669 | if (tid != 0 && !in_thread_list (pid_to_ptid (tid))) |
1670 | add_thread (pid_to_ptid (tid)); | |
9d1f7ab2 MS |
1671 | } |
1672 | while (*bufp++ == ','); /* comma-separated list */ | |
1673 | putpkt ("qsThreadInfo"); | |
1674 | bufp = buf; | |
24b06219 | 1675 | getpkt (bufp, rs->remote_packet_size, 0); |
9d1f7ab2 MS |
1676 | } |
1677 | return; /* done */ | |
1678 | } | |
1679 | } | |
1680 | ||
23860348 | 1681 | /* Else fall back to old method based on jmetzler protocol. */ |
9d1f7ab2 MS |
1682 | use_threadinfo_query = 0; |
1683 | remote_find_new_threads (); | |
1684 | return; | |
1685 | } | |
1686 | ||
802188a7 | 1687 | /* |
9d1f7ab2 MS |
1688 | * Collect a descriptive string about the given thread. |
1689 | * The target may say anything it wants to about the thread | |
1690 | * (typically info about its blocked / runnable state, name, etc.). | |
1691 | * This string will appear in the info threads display. | |
802188a7 | 1692 | * |
9d1f7ab2 MS |
1693 | * Optional: targets are not required to implement this function. |
1694 | */ | |
1695 | ||
1696 | static char * | |
1697 | remote_threads_extra_info (struct thread_info *tp) | |
1698 | { | |
d01949b6 | 1699 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
1700 | int result; |
1701 | int set; | |
1702 | threadref id; | |
1703 | struct gdb_ext_thread_info threadinfo; | |
23860348 | 1704 | static char display_buf[100]; /* arbitrary... */ |
d01949b6 | 1705 | char *bufp = alloca (rs->remote_packet_size); |
9d1f7ab2 MS |
1706 | int n = 0; /* position in display_buf */ |
1707 | ||
1708 | if (remote_desc == 0) /* paranoia */ | |
8e65ff28 | 1709 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 1710 | _("remote_threads_extra_info")); |
9d1f7ab2 MS |
1711 | |
1712 | if (use_threadextra_query) | |
1713 | { | |
ecbc58df WZ |
1714 | xsnprintf (bufp, rs->remote_packet_size, "qThreadExtraInfo,%x", |
1715 | PIDGET (tp->ptid)); | |
9d1f7ab2 | 1716 | putpkt (bufp); |
24b06219 | 1717 | getpkt (bufp, rs->remote_packet_size, 0); |
9d1f7ab2 MS |
1718 | if (bufp[0] != 0) |
1719 | { | |
30559e10 | 1720 | n = min (strlen (bufp) / 2, sizeof (display_buf)); |
cfd77fa1 | 1721 | result = hex2bin (bufp, (gdb_byte *) display_buf, n); |
30559e10 | 1722 | display_buf [result] = '\0'; |
9d1f7ab2 MS |
1723 | return display_buf; |
1724 | } | |
0f71a2f6 | 1725 | } |
9d1f7ab2 MS |
1726 | |
1727 | /* If the above query fails, fall back to the old method. */ | |
1728 | use_threadextra_query = 0; | |
1729 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
1730 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
39f77062 | 1731 | int_to_threadref (&id, PIDGET (tp->ptid)); |
9d1f7ab2 MS |
1732 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
1733 | if (threadinfo.active) | |
0f71a2f6 | 1734 | { |
9d1f7ab2 | 1735 | if (*threadinfo.shortname) |
ecbc58df WZ |
1736 | n += xsnprintf (&display_buf[0], sizeof (display_buf) - n, |
1737 | " Name: %s,", threadinfo.shortname); | |
9d1f7ab2 | 1738 | if (*threadinfo.display) |
ecbc58df WZ |
1739 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
1740 | " State: %s,", threadinfo.display); | |
9d1f7ab2 | 1741 | if (*threadinfo.more_display) |
ecbc58df WZ |
1742 | n += xsnprintf (&display_buf[n], sizeof (display_buf) - n, |
1743 | " Priority: %s", threadinfo.more_display); | |
9d1f7ab2 MS |
1744 | |
1745 | if (n > 0) | |
c5aa993b | 1746 | { |
23860348 | 1747 | /* For purely cosmetic reasons, clear up trailing commas. */ |
9d1f7ab2 MS |
1748 | if (',' == display_buf[n-1]) |
1749 | display_buf[n-1] = ' '; | |
1750 | return display_buf; | |
c5aa993b | 1751 | } |
0f71a2f6 | 1752 | } |
9d1f7ab2 | 1753 | return NULL; |
0f71a2f6 | 1754 | } |
c906108c | 1755 | \f |
c5aa993b | 1756 | |
24b06219 | 1757 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c SS |
1758 | |
1759 | static void | |
fba45db2 | 1760 | extended_remote_restart (void) |
c906108c | 1761 | { |
d01949b6 AC |
1762 | struct remote_state *rs = get_remote_state (); |
1763 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
1764 | |
1765 | /* Send the restart command; for reasons I don't understand the | |
1766 | remote side really expects a number after the "R". */ | |
c8d511af | 1767 | xsnprintf (buf, rs->remote_packet_size, "R%x", 0); |
c906108c SS |
1768 | putpkt (buf); |
1769 | ||
1770 | /* Now query for status so this looks just like we restarted | |
1771 | gdbserver from scratch. */ | |
1772 | putpkt ("?"); | |
24b06219 | 1773 | getpkt (buf, rs->remote_packet_size, 0); |
c906108c SS |
1774 | } |
1775 | \f | |
1776 | /* Clean up connection to a remote debugger. */ | |
1777 | ||
c906108c | 1778 | static void |
fba45db2 | 1779 | remote_close (int quitting) |
c906108c SS |
1780 | { |
1781 | if (remote_desc) | |
2cd58942 | 1782 | serial_close (remote_desc); |
c906108c SS |
1783 | remote_desc = NULL; |
1784 | } | |
1785 | ||
23860348 | 1786 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c SS |
1787 | |
1788 | static void | |
fba45db2 | 1789 | get_offsets (void) |
c906108c | 1790 | { |
d01949b6 AC |
1791 | struct remote_state *rs = get_remote_state (); |
1792 | char *buf = alloca (rs->remote_packet_size); | |
085dd6e6 | 1793 | char *ptr; |
c906108c SS |
1794 | int lose; |
1795 | CORE_ADDR text_addr, data_addr, bss_addr; | |
1796 | struct section_offsets *offs; | |
1797 | ||
1798 | putpkt ("qOffsets"); | |
24b06219 | 1799 | getpkt (buf, rs->remote_packet_size, 0); |
c906108c SS |
1800 | |
1801 | if (buf[0] == '\000') | |
1802 | return; /* Return silently. Stub doesn't support | |
23860348 | 1803 | this command. */ |
c906108c SS |
1804 | if (buf[0] == 'E') |
1805 | { | |
8a3fe4f8 | 1806 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
1807 | return; |
1808 | } | |
1809 | ||
1810 | /* Pick up each field in turn. This used to be done with scanf, but | |
1811 | scanf will make trouble if CORE_ADDR size doesn't match | |
1812 | conversion directives correctly. The following code will work | |
1813 | with any size of CORE_ADDR. */ | |
1814 | text_addr = data_addr = bss_addr = 0; | |
1815 | ptr = buf; | |
1816 | lose = 0; | |
1817 | ||
1818 | if (strncmp (ptr, "Text=", 5) == 0) | |
1819 | { | |
1820 | ptr += 5; | |
1821 | /* Don't use strtol, could lose on big values. */ | |
1822 | while (*ptr && *ptr != ';') | |
1823 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
1824 | } | |
1825 | else | |
1826 | lose = 1; | |
1827 | ||
1828 | if (!lose && strncmp (ptr, ";Data=", 6) == 0) | |
1829 | { | |
1830 | ptr += 6; | |
1831 | while (*ptr && *ptr != ';') | |
1832 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
1833 | } | |
1834 | else | |
1835 | lose = 1; | |
1836 | ||
1837 | if (!lose && strncmp (ptr, ";Bss=", 5) == 0) | |
1838 | { | |
1839 | ptr += 5; | |
1840 | while (*ptr && *ptr != ';') | |
1841 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
1842 | } | |
1843 | else | |
1844 | lose = 1; | |
1845 | ||
1846 | if (lose) | |
8a3fe4f8 | 1847 | error (_("Malformed response to offset query, %s"), buf); |
c906108c SS |
1848 | |
1849 | if (symfile_objfile == NULL) | |
1850 | return; | |
1851 | ||
802188a7 | 1852 | offs = ((struct section_offsets *) |
a39a16c4 | 1853 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 1854 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 1855 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 1856 | |
a4c8257b | 1857 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; |
c906108c SS |
1858 | |
1859 | /* This is a temporary kludge to force data and bss to use the same offsets | |
1860 | because that's what nlmconv does now. The real solution requires changes | |
1861 | to the stub and remote.c that I don't have time to do right now. */ | |
1862 | ||
a4c8257b EZ |
1863 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; |
1864 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
c906108c SS |
1865 | |
1866 | objfile_relocate (symfile_objfile, offs); | |
1867 | } | |
1868 | ||
1869 | /* Stub for catch_errors. */ | |
1870 | ||
0f71a2f6 | 1871 | static int |
36918e70 | 1872 | remote_start_remote_dummy (struct ui_out *uiout, void *dummy) |
0f71a2f6 | 1873 | { |
23860348 | 1874 | start_remote (); /* Initialize gdb process mechanisms. */ |
36918e70 AC |
1875 | /* NOTE: Return something >=0. A -ve value is reserved for |
1876 | catch_exceptions. */ | |
0f71a2f6 JM |
1877 | return 1; |
1878 | } | |
1879 | ||
9cbc821d | 1880 | static void |
36918e70 | 1881 | remote_start_remote (struct ui_out *uiout, void *dummy) |
c906108c | 1882 | { |
23860348 | 1883 | immediate_quit++; /* Allow user to interrupt it. */ |
c906108c SS |
1884 | |
1885 | /* Ack any packet which the remote side has already sent. */ | |
2cd58942 | 1886 | serial_write (remote_desc, "+", 1); |
c906108c SS |
1887 | |
1888 | /* Let the stub know that we want it to return the thread. */ | |
1889 | set_thread (-1, 0); | |
1890 | ||
39f77062 | 1891 | inferior_ptid = remote_current_thread (inferior_ptid); |
c906108c | 1892 | |
23860348 | 1893 | get_offsets (); /* Get text, data & bss offsets. */ |
c906108c | 1894 | |
23860348 | 1895 | putpkt ("?"); /* Initiate a query from remote machine. */ |
8edbea78 | 1896 | immediate_quit--; |
c906108c | 1897 | |
9cbc821d | 1898 | remote_start_remote_dummy (uiout, dummy); |
c906108c SS |
1899 | } |
1900 | ||
1901 | /* Open a connection to a remote debugger. | |
1902 | NAME is the filename used for communication. */ | |
1903 | ||
1904 | static void | |
fba45db2 | 1905 | remote_open (char *name, int from_tty) |
c906108c | 1906 | { |
92d1e331 | 1907 | remote_open_1 (name, from_tty, &remote_ops, 0, 0); |
c906108c SS |
1908 | } |
1909 | ||
23860348 | 1910 | /* Just like remote_open, but with asynchronous support. */ |
43ff13b4 | 1911 | static void |
fba45db2 | 1912 | remote_async_open (char *name, int from_tty) |
43ff13b4 | 1913 | { |
92d1e331 | 1914 | remote_open_1 (name, from_tty, &remote_async_ops, 0, 1); |
43ff13b4 JM |
1915 | } |
1916 | ||
c906108c SS |
1917 | /* Open a connection to a remote debugger using the extended |
1918 | remote gdb protocol. NAME is the filename used for communication. */ | |
1919 | ||
1920 | static void | |
fba45db2 | 1921 | extended_remote_open (char *name, int from_tty) |
c906108c | 1922 | { |
92d1e331 DJ |
1923 | remote_open_1 (name, from_tty, &extended_remote_ops, 1 /*extended_p */, |
1924 | 0 /* async_p */); | |
c906108c SS |
1925 | } |
1926 | ||
23860348 | 1927 | /* Just like extended_remote_open, but with asynchronous support. */ |
43ff13b4 | 1928 | static void |
fba45db2 | 1929 | extended_remote_async_open (char *name, int from_tty) |
43ff13b4 | 1930 | { |
92d1e331 DJ |
1931 | remote_open_1 (name, from_tty, &extended_async_remote_ops, |
1932 | 1 /*extended_p */, 1 /* async_p */); | |
43ff13b4 JM |
1933 | } |
1934 | ||
c906108c SS |
1935 | /* Generic code for opening a connection to a remote target. */ |
1936 | ||
d471ea57 AC |
1937 | static void |
1938 | init_all_packet_configs (void) | |
1939 | { | |
1940 | int i; | |
444abaca DJ |
1941 | for (i = 0; i < PACKET_MAX; i++) |
1942 | update_packet_config (&remote_protocol_packets[i]); | |
d471ea57 AC |
1943 | } |
1944 | ||
23860348 | 1945 | /* Symbol look-up. */ |
dc8acb97 MS |
1946 | |
1947 | static void | |
1948 | remote_check_symbols (struct objfile *objfile) | |
1949 | { | |
d01949b6 | 1950 | struct remote_state *rs = get_remote_state (); |
dc8acb97 MS |
1951 | char *msg, *reply, *tmp; |
1952 | struct minimal_symbol *sym; | |
1953 | int end; | |
1954 | ||
444abaca | 1955 | if (remote_protocol_packets[PACKET_qSymbol].support == PACKET_DISABLE) |
dc8acb97 MS |
1956 | return; |
1957 | ||
d01949b6 AC |
1958 | msg = alloca (rs->remote_packet_size); |
1959 | reply = alloca (rs->remote_packet_size); | |
dc8acb97 | 1960 | |
23860348 | 1961 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
1962 | |
1963 | putpkt ("qSymbol::"); | |
24b06219 | 1964 | getpkt (reply, rs->remote_packet_size, 0); |
444abaca | 1965 | packet_ok (reply, &remote_protocol_packets[PACKET_qSymbol]); |
dc8acb97 MS |
1966 | |
1967 | while (strncmp (reply, "qSymbol:", 8) == 0) | |
1968 | { | |
1969 | tmp = &reply[8]; | |
cfd77fa1 | 1970 | end = hex2bin (tmp, (gdb_byte *) msg, strlen (tmp) / 2); |
dc8acb97 MS |
1971 | msg[end] = '\0'; |
1972 | sym = lookup_minimal_symbol (msg, NULL, NULL); | |
1973 | if (sym == NULL) | |
ecbc58df | 1974 | xsnprintf (msg, rs->remote_packet_size, "qSymbol::%s", &reply[8]); |
dc8acb97 | 1975 | else |
ecbc58df WZ |
1976 | xsnprintf (msg, rs->remote_packet_size, "qSymbol:%s:%s", |
1977 | paddr_nz (SYMBOL_VALUE_ADDRESS (sym)), | |
1978 | &reply[8]); | |
dc8acb97 | 1979 | putpkt (msg); |
24b06219 | 1980 | getpkt (reply, rs->remote_packet_size, 0); |
dc8acb97 MS |
1981 | } |
1982 | } | |
1983 | ||
9db8d71f DJ |
1984 | static struct serial * |
1985 | remote_serial_open (char *name) | |
1986 | { | |
1987 | static int udp_warning = 0; | |
1988 | ||
1989 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
1990 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
1991 | serial connection is reliable and not the serial connection promising | |
1992 | to be. */ | |
1993 | if (!udp_warning && strncmp (name, "udp:", 4) == 0) | |
1994 | { | |
8a3fe4f8 AC |
1995 | warning (_("\ |
1996 | The remote protocol may be unreliable over UDP.\n\ | |
1997 | Some events may be lost, rendering further debugging impossible.")); | |
9db8d71f DJ |
1998 | udp_warning = 1; |
1999 | } | |
2000 | ||
2001 | return serial_open (name); | |
2002 | } | |
2003 | ||
c906108c | 2004 | static void |
fba45db2 | 2005 | remote_open_1 (char *name, int from_tty, struct target_ops *target, |
92d1e331 | 2006 | int extended_p, int async_p) |
c906108c | 2007 | { |
d01949b6 | 2008 | struct remote_state *rs = get_remote_state (); |
c906108c | 2009 | if (name == 0) |
8a3fe4f8 | 2010 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 2011 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 2012 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 2013 | |
23860348 | 2014 | /* See FIXME above. */ |
92d1e331 DJ |
2015 | if (!async_p) |
2016 | wait_forever_enabled_p = 1; | |
6426a772 | 2017 | |
00cac895 DJ |
2018 | reopen_exec_file (); |
2019 | reread_symbols (); | |
2020 | ||
c906108c SS |
2021 | target_preopen (from_tty); |
2022 | ||
2023 | unpush_target (target); | |
2024 | ||
9db8d71f | 2025 | remote_desc = remote_serial_open (name); |
c906108c SS |
2026 | if (!remote_desc) |
2027 | perror_with_name (name); | |
2028 | ||
2029 | if (baud_rate != -1) | |
2030 | { | |
2cd58942 | 2031 | if (serial_setbaudrate (remote_desc, baud_rate)) |
c906108c | 2032 | { |
9b74d5d3 KB |
2033 | /* The requested speed could not be set. Error out to |
2034 | top level after closing remote_desc. Take care to | |
2035 | set remote_desc to NULL to avoid closing remote_desc | |
2036 | more than once. */ | |
2cd58942 | 2037 | serial_close (remote_desc); |
9b74d5d3 | 2038 | remote_desc = NULL; |
c906108c SS |
2039 | perror_with_name (name); |
2040 | } | |
2041 | } | |
2042 | ||
2cd58942 | 2043 | serial_raw (remote_desc); |
c906108c SS |
2044 | |
2045 | /* If there is something sitting in the buffer we might take it as a | |
2046 | response to a command, which would be bad. */ | |
2cd58942 | 2047 | serial_flush_input (remote_desc); |
c906108c SS |
2048 | |
2049 | if (from_tty) | |
2050 | { | |
2051 | puts_filtered ("Remote debugging using "); | |
2052 | puts_filtered (name); | |
2053 | puts_filtered ("\n"); | |
2054 | } | |
23860348 | 2055 | push_target (target); /* Switch to using remote target now. */ |
c906108c | 2056 | |
d471ea57 | 2057 | init_all_packet_configs (); |
802188a7 | 2058 | |
c5aa993b | 2059 | general_thread = -2; |
cce74817 | 2060 | continue_thread = -2; |
c906108c | 2061 | |
9d1f7ab2 MS |
2062 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
2063 | use_threadinfo_query = 1; | |
2064 | use_threadextra_query = 1; | |
2065 | ||
c906108c SS |
2066 | /* Without this, some commands which require an active target (such |
2067 | as kill) won't work. This variable serves (at least) double duty | |
2068 | as both the pid of the target process (if it has such), and as a | |
2069 | flag indicating that a target is active. These functions should | |
2070 | be split out into seperate variables, especially since GDB will | |
2071 | someday have a notion of debugging several processes. */ | |
2072 | ||
39f77062 | 2073 | inferior_ptid = pid_to_ptid (MAGIC_NULL_PID); |
92d1e331 DJ |
2074 | |
2075 | if (async_p) | |
2076 | { | |
23860348 | 2077 | /* With this target we start out by owning the terminal. */ |
92d1e331 DJ |
2078 | remote_async_terminal_ours_p = 1; |
2079 | ||
2080 | /* FIXME: cagney/1999-09-23: During the initial connection it is | |
2081 | assumed that the target is already ready and able to respond to | |
2082 | requests. Unfortunately remote_start_remote() eventually calls | |
2083 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets | |
2084 | around this. Eventually a mechanism that allows | |
2085 | wait_for_inferior() to expect/get timeouts will be | |
23860348 | 2086 | implemented. */ |
92d1e331 DJ |
2087 | wait_forever_enabled_p = 0; |
2088 | } | |
2089 | ||
23860348 | 2090 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 2091 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 2092 | |
36918e70 | 2093 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
2094 | target (we'd otherwise be in an inconsistent state) and then |
2095 | propogate the error on up the exception chain. This ensures that | |
2096 | the caller doesn't stumble along blindly assuming that the | |
2097 | function succeeded. The CLI doesn't have this problem but other | |
2098 | UI's, such as MI do. | |
36918e70 AC |
2099 | |
2100 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
2101 | this function should return an error indication letting the | |
ce2826aa | 2102 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
2103 | ``target remote'' is directly wired to this function making that |
2104 | impossible. On a positive note, the CLI side of this problem has | |
2105 | been fixed - the function set_cmd_context() makes it possible for | |
2106 | all the ``target ....'' commands to share a common callback | |
2107 | function. See cli-dump.c. */ | |
109c3e39 AC |
2108 | { |
2109 | struct gdb_exception ex | |
2110 | = catch_exception (uiout, remote_start_remote, NULL, RETURN_MASK_ALL); | |
2111 | if (ex.reason < 0) | |
2112 | { | |
2113 | pop_target (); | |
2114 | if (async_p) | |
2115 | wait_forever_enabled_p = 1; | |
2116 | throw_exception (ex); | |
2117 | } | |
2118 | } | |
c906108c | 2119 | |
92d1e331 DJ |
2120 | if (async_p) |
2121 | wait_forever_enabled_p = 1; | |
6426a772 JM |
2122 | |
2123 | if (extended_p) | |
43ff13b4 | 2124 | { |
6240bebf | 2125 | /* Tell the remote that we are using the extended protocol. */ |
d01949b6 | 2126 | char *buf = alloca (rs->remote_packet_size); |
6426a772 | 2127 | putpkt ("!"); |
24b06219 | 2128 | getpkt (buf, rs->remote_packet_size, 0); |
43ff13b4 | 2129 | } |
a77053c2 | 2130 | |
9353355f | 2131 | post_create_inferior (¤t_target, from_tty); |
f78f6cf1 | 2132 | |
23860348 | 2133 | if (exec_bfd) /* No use without an exec file. */ |
9353355f | 2134 | remote_check_symbols (symfile_objfile); |
43ff13b4 JM |
2135 | } |
2136 | ||
c906108c SS |
2137 | /* This takes a program previously attached to and detaches it. After |
2138 | this is done, GDB can be used to debug some other program. We | |
2139 | better not have left any breakpoints in the target program or it'll | |
2140 | die when it hits one. */ | |
2141 | ||
2142 | static void | |
fba45db2 | 2143 | remote_detach (char *args, int from_tty) |
c906108c | 2144 | { |
d01949b6 AC |
2145 | struct remote_state *rs = get_remote_state (); |
2146 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
2147 | |
2148 | if (args) | |
8a3fe4f8 | 2149 | error (_("Argument given to \"detach\" when remotely debugging.")); |
c906108c SS |
2150 | |
2151 | /* Tell the remote target to detach. */ | |
2152 | strcpy (buf, "D"); | |
24b06219 | 2153 | remote_send (buf, rs->remote_packet_size); |
c906108c | 2154 | |
23860348 | 2155 | /* Unregister the file descriptor from the event loop. */ |
6ad8ae5c DJ |
2156 | if (target_is_async_p ()) |
2157 | serial_async (remote_desc, NULL, 0); | |
2158 | ||
cca728d0 | 2159 | target_mourn_inferior (); |
c906108c SS |
2160 | if (from_tty) |
2161 | puts_filtered ("Ending remote debugging.\n"); | |
2162 | } | |
2163 | ||
6ad8ae5c DJ |
2164 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
2165 | ||
43ff13b4 | 2166 | static void |
6ad8ae5c | 2167 | remote_disconnect (char *args, int from_tty) |
43ff13b4 | 2168 | { |
43ff13b4 | 2169 | if (args) |
8a3fe4f8 | 2170 | error (_("Argument given to \"detach\" when remotely debugging.")); |
43ff13b4 | 2171 | |
23860348 | 2172 | /* Unregister the file descriptor from the event loop. */ |
ed9a39eb | 2173 | if (target_is_async_p ()) |
2cd58942 | 2174 | serial_async (remote_desc, NULL, 0); |
43ff13b4 | 2175 | |
cca728d0 | 2176 | target_mourn_inferior (); |
43ff13b4 JM |
2177 | if (from_tty) |
2178 | puts_filtered ("Ending remote debugging.\n"); | |
2179 | } | |
2180 | ||
c906108c SS |
2181 | /* Convert hex digit A to a number. */ |
2182 | ||
30559e10 | 2183 | static int |
fba45db2 | 2184 | fromhex (int a) |
c906108c SS |
2185 | { |
2186 | if (a >= '0' && a <= '9') | |
2187 | return a - '0'; | |
2188 | else if (a >= 'a' && a <= 'f') | |
2189 | return a - 'a' + 10; | |
2190 | else if (a >= 'A' && a <= 'F') | |
2191 | return a - 'A' + 10; | |
c5aa993b | 2192 | else |
8a3fe4f8 | 2193 | error (_("Reply contains invalid hex digit %d"), a); |
c906108c SS |
2194 | } |
2195 | ||
30559e10 | 2196 | static int |
cfd77fa1 | 2197 | hex2bin (const char *hex, gdb_byte *bin, int count) |
30559e10 MS |
2198 | { |
2199 | int i; | |
2200 | ||
30559e10 MS |
2201 | for (i = 0; i < count; i++) |
2202 | { | |
2203 | if (hex[0] == 0 || hex[1] == 0) | |
2204 | { | |
2205 | /* Hex string is short, or of uneven length. | |
23860348 | 2206 | Return the count that has been converted so far. */ |
30559e10 MS |
2207 | return i; |
2208 | } | |
2209 | *bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]); | |
2210 | hex += 2; | |
2211 | } | |
2212 | return i; | |
2213 | } | |
2214 | ||
c906108c SS |
2215 | /* Convert number NIB to a hex digit. */ |
2216 | ||
2217 | static int | |
fba45db2 | 2218 | tohex (int nib) |
c906108c SS |
2219 | { |
2220 | if (nib < 10) | |
c5aa993b | 2221 | return '0' + nib; |
c906108c | 2222 | else |
c5aa993b | 2223 | return 'a' + nib - 10; |
c906108c | 2224 | } |
30559e10 MS |
2225 | |
2226 | static int | |
cfd77fa1 | 2227 | bin2hex (const gdb_byte *bin, char *hex, int count) |
30559e10 MS |
2228 | { |
2229 | int i; | |
23860348 | 2230 | /* May use a length, or a nul-terminated string as input. */ |
30559e10 | 2231 | if (count == 0) |
cfd77fa1 | 2232 | count = strlen ((char *) bin); |
30559e10 MS |
2233 | |
2234 | for (i = 0; i < count; i++) | |
2235 | { | |
2236 | *hex++ = tohex ((*bin >> 4) & 0xf); | |
2237 | *hex++ = tohex (*bin++ & 0xf); | |
2238 | } | |
2239 | *hex = 0; | |
2240 | return i; | |
2241 | } | |
c906108c | 2242 | \f |
506fb367 DJ |
2243 | /* Check for the availability of vCont. This function should also check |
2244 | the response. */ | |
c906108c SS |
2245 | |
2246 | static void | |
506fb367 | 2247 | remote_vcont_probe (struct remote_state *rs, char *buf) |
c906108c | 2248 | { |
506fb367 DJ |
2249 | strcpy (buf, "vCont?"); |
2250 | putpkt (buf); | |
2251 | getpkt (buf, rs->remote_packet_size, 0); | |
c906108c | 2252 | |
506fb367 DJ |
2253 | /* Make sure that the features we assume are supported. */ |
2254 | if (strncmp (buf, "vCont", 5) == 0) | |
2255 | { | |
2256 | char *p = &buf[5]; | |
2257 | int support_s, support_S, support_c, support_C; | |
2258 | ||
2259 | support_s = 0; | |
2260 | support_S = 0; | |
2261 | support_c = 0; | |
2262 | support_C = 0; | |
2263 | while (p && *p == ';') | |
2264 | { | |
2265 | p++; | |
2266 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2267 | support_s = 1; | |
2268 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2269 | support_S = 1; | |
2270 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2271 | support_c = 1; | |
2272 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
2273 | support_C = 1; | |
2274 | ||
2275 | p = strchr (p, ';'); | |
2276 | } | |
c906108c | 2277 | |
506fb367 DJ |
2278 | /* If s, S, c, and C are not all supported, we can't use vCont. Clearing |
2279 | BUF will make packet_ok disable the packet. */ | |
2280 | if (!support_s || !support_S || !support_c || !support_C) | |
2281 | buf[0] = 0; | |
2282 | } | |
c906108c | 2283 | |
444abaca | 2284 | packet_ok (buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 2285 | } |
c906108c | 2286 | |
506fb367 DJ |
2287 | /* Resume the remote inferior by using a "vCont" packet. The thread |
2288 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
2289 | resumed thread should be single-stepped and/or signalled. If PTID's | |
2290 | PID is -1, then all threads are resumed; the thread to be stepped and/or | |
2291 | signalled is given in the global INFERIOR_PTID. This function returns | |
2292 | non-zero iff it resumes the inferior. | |
44eaed12 | 2293 | |
506fb367 DJ |
2294 | This function issues a strict subset of all possible vCont commands at the |
2295 | moment. */ | |
44eaed12 | 2296 | |
506fb367 DJ |
2297 | static int |
2298 | remote_vcont_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
2299 | { | |
2300 | struct remote_state *rs = get_remote_state (); | |
2301 | int pid = PIDGET (ptid); | |
2963ee1d | 2302 | char *buf = NULL, *outbuf; |
506fb367 | 2303 | struct cleanup *old_cleanup; |
44eaed12 | 2304 | |
506fb367 DJ |
2305 | buf = xmalloc (rs->remote_packet_size); |
2306 | old_cleanup = make_cleanup (xfree, buf); | |
44eaed12 | 2307 | |
444abaca | 2308 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_SUPPORT_UNKNOWN) |
506fb367 | 2309 | remote_vcont_probe (rs, buf); |
44eaed12 | 2310 | |
444abaca | 2311 | if (remote_protocol_packets[PACKET_vCont].support == PACKET_DISABLE) |
506fb367 DJ |
2312 | { |
2313 | do_cleanups (old_cleanup); | |
2314 | return 0; | |
44eaed12 C |
2315 | } |
2316 | ||
506fb367 DJ |
2317 | /* If we could generate a wider range of packets, we'd have to worry |
2318 | about overflowing BUF. Should there be a generic | |
2319 | "multi-part-packet" packet? */ | |
2320 | ||
2321 | if (PIDGET (inferior_ptid) == MAGIC_NULL_PID) | |
c906108c | 2322 | { |
506fb367 DJ |
2323 | /* MAGIC_NULL_PTID means that we don't have any active threads, so we |
2324 | don't have any PID numbers the inferior will understand. Make sure | |
2325 | to only send forms that do not specify a PID. */ | |
2326 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d | 2327 | outbuf = xstrprintf ("vCont;S%02x", siggnal); |
506fb367 | 2328 | else if (step) |
2963ee1d | 2329 | outbuf = xstrprintf ("vCont;s"); |
506fb367 | 2330 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d | 2331 | outbuf = xstrprintf ("vCont;C%02x", siggnal); |
506fb367 | 2332 | else |
2963ee1d | 2333 | outbuf = xstrprintf ("vCont;c"); |
506fb367 DJ |
2334 | } |
2335 | else if (pid == -1) | |
2336 | { | |
2337 | /* Resume all threads, with preference for INFERIOR_PTID. */ | |
2338 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d DJ |
2339 | outbuf = xstrprintf ("vCont;S%02x:%x;c", siggnal, |
2340 | PIDGET (inferior_ptid)); | |
506fb367 | 2341 | else if (step) |
2963ee1d | 2342 | outbuf = xstrprintf ("vCont;s:%x;c", PIDGET (inferior_ptid)); |
506fb367 | 2343 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d DJ |
2344 | outbuf = xstrprintf ("vCont;C%02x:%x;c", siggnal, |
2345 | PIDGET (inferior_ptid)); | |
506fb367 | 2346 | else |
2963ee1d | 2347 | outbuf = xstrprintf ("vCont;c"); |
c906108c SS |
2348 | } |
2349 | else | |
506fb367 DJ |
2350 | { |
2351 | /* Scheduler locking; resume only PTID. */ | |
2352 | if (step && siggnal != TARGET_SIGNAL_0) | |
2963ee1d | 2353 | outbuf = xstrprintf ("vCont;S%02x:%x", siggnal, pid); |
506fb367 | 2354 | else if (step) |
2963ee1d | 2355 | outbuf = xstrprintf ("vCont;s:%x", pid); |
506fb367 | 2356 | else if (siggnal != TARGET_SIGNAL_0) |
2963ee1d | 2357 | outbuf = xstrprintf ("vCont;C%02x:%x", siggnal, pid); |
506fb367 | 2358 | else |
2963ee1d | 2359 | outbuf = xstrprintf ("vCont;c:%x", pid); |
506fb367 | 2360 | } |
c906108c | 2361 | |
2963ee1d DJ |
2362 | gdb_assert (outbuf && strlen (outbuf) < rs->remote_packet_size); |
2363 | make_cleanup (xfree, outbuf); | |
2364 | ||
2365 | putpkt (outbuf); | |
506fb367 DJ |
2366 | |
2367 | do_cleanups (old_cleanup); | |
2368 | ||
2369 | return 1; | |
c906108c | 2370 | } |
43ff13b4 | 2371 | |
506fb367 DJ |
2372 | /* Tell the remote machine to resume. */ |
2373 | ||
2374 | static enum target_signal last_sent_signal = TARGET_SIGNAL_0; | |
2375 | ||
2376 | static int last_sent_step; | |
2377 | ||
43ff13b4 | 2378 | static void |
506fb367 | 2379 | remote_resume (ptid_t ptid, int step, enum target_signal siggnal) |
43ff13b4 | 2380 | { |
d01949b6 AC |
2381 | struct remote_state *rs = get_remote_state (); |
2382 | char *buf = alloca (rs->remote_packet_size); | |
39f77062 | 2383 | int pid = PIDGET (ptid); |
43ff13b4 | 2384 | |
43ff13b4 JM |
2385 | last_sent_signal = siggnal; |
2386 | last_sent_step = step; | |
2387 | ||
2388 | /* A hook for when we need to do something at the last moment before | |
2389 | resumption. */ | |
9a4105ab AC |
2390 | if (deprecated_target_resume_hook) |
2391 | (*deprecated_target_resume_hook) (); | |
43ff13b4 | 2392 | |
506fb367 DJ |
2393 | /* The vCont packet doesn't need to specify threads via Hc. */ |
2394 | if (remote_vcont_resume (ptid, step, siggnal)) | |
2395 | return; | |
2396 | ||
2397 | /* All other supported resume packets do use Hc, so call set_thread. */ | |
2398 | if (pid == -1) | |
23860348 | 2399 | set_thread (0, 0); /* Run any thread. */ |
506fb367 | 2400 | else |
23860348 | 2401 | set_thread (pid, 0); /* Run this thread. */ |
506fb367 | 2402 | |
43ff13b4 JM |
2403 | if (siggnal != TARGET_SIGNAL_0) |
2404 | { | |
2405 | buf[0] = step ? 'S' : 'C'; | |
c5aa993b | 2406 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); |
506fb367 | 2407 | buf[2] = tohex (((int) siggnal) & 0xf); |
43ff13b4 JM |
2408 | buf[3] = '\0'; |
2409 | } | |
2410 | else | |
c5aa993b | 2411 | strcpy (buf, step ? "s" : "c"); |
506fb367 | 2412 | |
44eaed12 | 2413 | putpkt (buf); |
506fb367 DJ |
2414 | } |
2415 | ||
23860348 | 2416 | /* Same as remote_resume, but with async support. */ |
506fb367 DJ |
2417 | static void |
2418 | remote_async_resume (ptid_t ptid, int step, enum target_signal siggnal) | |
2419 | { | |
2420 | remote_resume (ptid, step, siggnal); | |
43ff13b4 | 2421 | |
2acceee2 JM |
2422 | /* We are about to start executing the inferior, let's register it |
2423 | with the event loop. NOTE: this is the one place where all the | |
2424 | execution commands end up. We could alternatively do this in each | |
23860348 | 2425 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
2426 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
2427 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 2428 | NOT asynchronously. */ |
362646f5 | 2429 | if (target_can_async_p ()) |
2acceee2 | 2430 | target_async (inferior_event_handler, 0); |
23860348 | 2431 | /* Tell the world that the target is now executing. */ |
2acceee2 JM |
2432 | /* FIXME: cagney/1999-09-23: Is it the targets responsibility to set |
2433 | this? Instead, should the client of target just assume (for | |
2434 | async targets) that the target is going to start executing? Is | |
2435 | this information already found in the continuation block? */ | |
ed9a39eb | 2436 | if (target_is_async_p ()) |
2acceee2 | 2437 | target_executing = 1; |
43ff13b4 | 2438 | } |
c906108c | 2439 | \f |
43ff13b4 JM |
2440 | |
2441 | /* Set up the signal handler for SIGINT, while the target is | |
23860348 | 2442 | executing, ovewriting the 'regular' SIGINT signal handler. */ |
43ff13b4 | 2443 | static void |
fba45db2 | 2444 | initialize_sigint_signal_handler (void) |
43ff13b4 | 2445 | { |
c5aa993b | 2446 | sigint_remote_token = |
43ff13b4 JM |
2447 | create_async_signal_handler (async_remote_interrupt, NULL); |
2448 | signal (SIGINT, handle_remote_sigint); | |
2449 | } | |
2450 | ||
23860348 | 2451 | /* Signal handler for SIGINT, while the target is executing. */ |
43ff13b4 | 2452 | static void |
fba45db2 | 2453 | handle_remote_sigint (int sig) |
43ff13b4 JM |
2454 | { |
2455 | signal (sig, handle_remote_sigint_twice); | |
c5aa993b | 2456 | sigint_remote_twice_token = |
43ff13b4 JM |
2457 | create_async_signal_handler (async_remote_interrupt_twice, NULL); |
2458 | mark_async_signal_handler_wrapper (sigint_remote_token); | |
2459 | } | |
2460 | ||
2461 | /* Signal handler for SIGINT, installed after SIGINT has already been | |
2462 | sent once. It will take effect the second time that the user sends | |
23860348 | 2463 | a ^C. */ |
43ff13b4 | 2464 | static void |
fba45db2 | 2465 | handle_remote_sigint_twice (int sig) |
43ff13b4 JM |
2466 | { |
2467 | signal (sig, handle_sigint); | |
c5aa993b | 2468 | sigint_remote_twice_token = |
2df3850c | 2469 | create_async_signal_handler (inferior_event_handler_wrapper, NULL); |
43ff13b4 JM |
2470 | mark_async_signal_handler_wrapper (sigint_remote_twice_token); |
2471 | } | |
2472 | ||
6426a772 | 2473 | /* Perform the real interruption of the target execution, in response |
23860348 | 2474 | to a ^C. */ |
c5aa993b | 2475 | static void |
fba45db2 | 2476 | async_remote_interrupt (gdb_client_data arg) |
43ff13b4 JM |
2477 | { |
2478 | if (remote_debug) | |
2479 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
2480 | ||
2481 | target_stop (); | |
2482 | } | |
2483 | ||
2484 | /* Perform interrupt, if the first attempt did not succeed. Just give | |
23860348 | 2485 | up on the target alltogether. */ |
2df3850c | 2486 | void |
fba45db2 | 2487 | async_remote_interrupt_twice (gdb_client_data arg) |
43ff13b4 | 2488 | { |
2df3850c JM |
2489 | if (remote_debug) |
2490 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt_twice called\n"); | |
6426a772 | 2491 | /* Do something only if the target was not killed by the previous |
23860348 | 2492 | cntl-C. */ |
6426a772 JM |
2493 | if (target_executing) |
2494 | { | |
2495 | interrupt_query (); | |
2496 | signal (SIGINT, handle_remote_sigint); | |
2497 | } | |
43ff13b4 JM |
2498 | } |
2499 | ||
2500 | /* Reinstall the usual SIGINT handlers, after the target has | |
23860348 | 2501 | stopped. */ |
6426a772 JM |
2502 | static void |
2503 | cleanup_sigint_signal_handler (void *dummy) | |
43ff13b4 JM |
2504 | { |
2505 | signal (SIGINT, handle_sigint); | |
2506 | if (sigint_remote_twice_token) | |
23860348 MS |
2507 | delete_async_signal_handler ((struct async_signal_handler **) |
2508 | &sigint_remote_twice_token); | |
43ff13b4 | 2509 | if (sigint_remote_token) |
23860348 MS |
2510 | delete_async_signal_handler ((struct async_signal_handler **) |
2511 | &sigint_remote_token); | |
43ff13b4 JM |
2512 | } |
2513 | ||
c906108c SS |
2514 | /* Send ^C to target to halt it. Target will respond, and send us a |
2515 | packet. */ | |
507f3c78 | 2516 | static void (*ofunc) (int); |
c906108c | 2517 | |
7a292a7a SS |
2518 | /* The command line interface's stop routine. This function is installed |
2519 | as a signal handler for SIGINT. The first time a user requests a | |
2520 | stop, we call remote_stop to send a break or ^C. If there is no | |
2521 | response from the target (it didn't stop when the user requested it), | |
23860348 | 2522 | we ask the user if he'd like to detach from the target. */ |
c906108c | 2523 | static void |
fba45db2 | 2524 | remote_interrupt (int signo) |
c906108c | 2525 | { |
23860348 | 2526 | /* If this doesn't work, try more severe steps. */ |
7a292a7a SS |
2527 | signal (signo, remote_interrupt_twice); |
2528 | ||
2529 | if (remote_debug) | |
0f71a2f6 | 2530 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); |
7a292a7a SS |
2531 | |
2532 | target_stop (); | |
2533 | } | |
2534 | ||
2535 | /* The user typed ^C twice. */ | |
2536 | ||
2537 | static void | |
fba45db2 | 2538 | remote_interrupt_twice (int signo) |
7a292a7a SS |
2539 | { |
2540 | signal (signo, ofunc); | |
2541 | interrupt_query (); | |
c906108c SS |
2542 | signal (signo, remote_interrupt); |
2543 | } | |
7a292a7a SS |
2544 | |
2545 | /* This is the generic stop called via the target vector. When a target | |
2546 | interrupt is requested, either by the command line or the GUI, we | |
23860348 | 2547 | will eventually end up here. */ |
c906108c | 2548 | static void |
fba45db2 | 2549 | remote_stop (void) |
c906108c | 2550 | { |
7a292a7a SS |
2551 | /* Send a break or a ^C, depending on user preference. */ |
2552 | if (remote_debug) | |
0f71a2f6 | 2553 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 2554 | |
7a292a7a | 2555 | if (remote_break) |
2cd58942 | 2556 | serial_send_break (remote_desc); |
c906108c | 2557 | else |
2cd58942 | 2558 | serial_write (remote_desc, "\003", 1); |
c906108c SS |
2559 | } |
2560 | ||
2561 | /* Ask the user what to do when an interrupt is received. */ | |
2562 | ||
2563 | static void | |
fba45db2 | 2564 | interrupt_query (void) |
c906108c SS |
2565 | { |
2566 | target_terminal_ours (); | |
2567 | ||
2568 | if (query ("Interrupted while waiting for the program.\n\ | |
2569 | Give up (and stop debugging it)? ")) | |
2570 | { | |
2571 | target_mourn_inferior (); | |
315a522e | 2572 | deprecated_throw_reason (RETURN_QUIT); |
c906108c SS |
2573 | } |
2574 | ||
2575 | target_terminal_inferior (); | |
2576 | } | |
2577 | ||
6426a772 JM |
2578 | /* Enable/disable target terminal ownership. Most targets can use |
2579 | terminal groups to control terminal ownership. Remote targets are | |
2580 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 2581 | is required. */ |
6426a772 JM |
2582 | |
2583 | static void | |
2584 | remote_async_terminal_inferior (void) | |
2585 | { | |
2586 | /* FIXME: cagney/1999-09-27: Shouldn't need to test for | |
2587 | sync_execution here. This function should only be called when | |
2588 | GDB is resuming the inferior in the forground. A background | |
2589 | resume (``run&'') should leave GDB in control of the terminal and | |
23860348 | 2590 | consequently should not call this code. */ |
6426a772 JM |
2591 | if (!sync_execution) |
2592 | return; | |
2593 | /* FIXME: cagney/1999-09-27: Closely related to the above. Make | |
2594 | calls target_terminal_*() idenpotent. The event-loop GDB talking | |
2595 | to an asynchronous target with a synchronous command calls this | |
2596 | function from both event-top.c and infrun.c/infcmd.c. Once GDB | |
2597 | stops trying to transfer the terminal to the target when it | |
2598 | shouldn't this guard can go away. */ | |
2599 | if (!remote_async_terminal_ours_p) | |
2600 | return; | |
2601 | delete_file_handler (input_fd); | |
2602 | remote_async_terminal_ours_p = 0; | |
2603 | initialize_sigint_signal_handler (); | |
2604 | /* NOTE: At this point we could also register our selves as the | |
2605 | recipient of all input. Any characters typed could then be | |
23860348 | 2606 | passed on down to the target. */ |
6426a772 JM |
2607 | } |
2608 | ||
2609 | static void | |
2610 | remote_async_terminal_ours (void) | |
2611 | { | |
23860348 | 2612 | /* See FIXME in remote_async_terminal_inferior. */ |
6426a772 JM |
2613 | if (!sync_execution) |
2614 | return; | |
23860348 | 2615 | /* See FIXME in remote_async_terminal_inferior. */ |
6426a772 JM |
2616 | if (remote_async_terminal_ours_p) |
2617 | return; | |
2618 | cleanup_sigint_signal_handler (NULL); | |
2619 | add_file_handler (input_fd, stdin_event_handler, 0); | |
2620 | remote_async_terminal_ours_p = 1; | |
2621 | } | |
2622 | ||
c906108c SS |
2623 | /* If nonzero, ignore the next kill. */ |
2624 | ||
2625 | int kill_kludge; | |
2626 | ||
2627 | void | |
917317f4 | 2628 | remote_console_output (char *msg) |
c906108c SS |
2629 | { |
2630 | char *p; | |
2631 | ||
c5aa993b | 2632 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
2633 | { |
2634 | char tb[2]; | |
2635 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
2636 | tb[0] = c; | |
2637 | tb[1] = 0; | |
43ff13b4 | 2638 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 2639 | } |
917317f4 | 2640 | gdb_flush (gdb_stdtarg); |
c906108c SS |
2641 | } |
2642 | ||
0f71a2f6 JM |
2643 | /* Wait until the remote machine stops, then return, |
2644 | storing status in STATUS just as `wait' would. | |
802188a7 | 2645 | Returns "pid", which in the case of a multi-threaded |
0f71a2f6 | 2646 | remote OS, is the thread-id. */ |
c906108c | 2647 | |
39f77062 KB |
2648 | static ptid_t |
2649 | remote_wait (ptid_t ptid, struct target_waitstatus *status) | |
c906108c | 2650 | { |
d01949b6 | 2651 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 2652 | char *buf = alloca (rs->remote_packet_size); |
b2dd6311 | 2653 | ULONGEST thread_num = -1; |
3c3bea1c | 2654 | ULONGEST addr; |
c906108c SS |
2655 | |
2656 | status->kind = TARGET_WAITKIND_EXITED; | |
2657 | status->value.integer = 0; | |
2658 | ||
2659 | while (1) | |
2660 | { | |
cfd77fa1 | 2661 | char *p; |
c906108c | 2662 | |
c906108c | 2663 | ofunc = signal (SIGINT, remote_interrupt); |
24b06219 | 2664 | getpkt (buf, rs->remote_packet_size, 1); |
c906108c SS |
2665 | signal (SIGINT, ofunc); |
2666 | ||
2667 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 2668 | collection of trace data) every time the target stops. */ |
9a4105ab AC |
2669 | if (deprecated_target_wait_loop_hook) |
2670 | (*deprecated_target_wait_loop_hook) (); | |
c906108c | 2671 | |
3c3bea1c GS |
2672 | remote_stopped_by_watchpoint_p = 0; |
2673 | ||
c906108c SS |
2674 | switch (buf[0]) |
2675 | { | |
23860348 | 2676 | case 'E': /* Error of some sort. */ |
8a3fe4f8 | 2677 | warning (_("Remote failure reply: %s"), buf); |
c906108c | 2678 | continue; |
23860348 | 2679 | case 'F': /* File-I/O request. */ |
449092f6 CV |
2680 | remote_fileio_request (buf); |
2681 | continue; | |
23860348 | 2682 | case 'T': /* Status with PC, SP, FP, ... */ |
c906108c | 2683 | { |
cfd77fa1 | 2684 | gdb_byte regs[MAX_REGISTER_SIZE]; |
c906108c | 2685 | |
23860348 | 2686 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
c906108c | 2687 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where |
c5aa993b JM |
2688 | ss = signal number |
2689 | n... = register number | |
2690 | r... = register contents | |
2691 | */ | |
c906108c SS |
2692 | p = &buf[3]; /* after Txx */ |
2693 | ||
2694 | while (*p) | |
2695 | { | |
cfd77fa1 | 2696 | char *p1; |
c906108c | 2697 | char *p_temp; |
97345198 | 2698 | int fieldsize; |
3c3bea1c GS |
2699 | LONGEST pnum = 0; |
2700 | ||
23860348 MS |
2701 | /* If the packet contains a register number save it in |
2702 | pnum and set p1 to point to the character following | |
2703 | it. Otherwise p1 points to p. */ | |
c906108c | 2704 | |
23860348 MS |
2705 | /* If this packet is an awatch packet, don't parse the |
2706 | 'a' as a register number. */ | |
3c3bea1c GS |
2707 | |
2708 | if (strncmp (p, "awatch", strlen("awatch")) != 0) | |
2709 | { | |
2710 | /* Read the ``P'' register number. */ | |
2711 | pnum = strtol (p, &p_temp, 16); | |
cfd77fa1 | 2712 | p1 = p_temp; |
3c3bea1c | 2713 | } |
802188a7 | 2714 | else |
3c3bea1c | 2715 | p1 = p; |
c906108c | 2716 | |
23860348 | 2717 | if (p1 == p) /* No register number present here. */ |
c906108c | 2718 | { |
cfd77fa1 | 2719 | p1 = strchr (p, ':'); |
c906108c | 2720 | if (p1 == NULL) |
8a3fe4f8 AC |
2721 | warning (_("Malformed packet(a) (missing colon): %s\n\ |
2722 | Packet: '%s'\n"), | |
c906108c | 2723 | p, buf); |
3c3bea1c | 2724 | if (strncmp (p, "thread", p1 - p) == 0) |
c906108c SS |
2725 | { |
2726 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
2727 | record_currthread (thread_num); | |
cfd77fa1 | 2728 | p = p_temp; |
c906108c | 2729 | } |
3c3bea1c GS |
2730 | else if ((strncmp (p, "watch", p1 - p) == 0) |
2731 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
2732 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
2733 | { | |
2734 | remote_stopped_by_watchpoint_p = 1; | |
2735 | p = unpack_varlen_hex (++p1, &addr); | |
2736 | remote_watch_data_address = (CORE_ADDR)addr; | |
2737 | } | |
2738 | else | |
2739 | { | |
2740 | /* Silently skip unknown optional info. */ | |
2741 | p_temp = strchr (p1 + 1, ';'); | |
2742 | if (p_temp) | |
cfd77fa1 | 2743 | p = p_temp; |
3c3bea1c | 2744 | } |
c906108c SS |
2745 | } |
2746 | else | |
2747 | { | |
ad10f812 | 2748 | struct packet_reg *reg = packet_reg_from_pnum (rs, pnum); |
c906108c SS |
2749 | p = p1; |
2750 | ||
2751 | if (*p++ != ':') | |
8a3fe4f8 AC |
2752 | error (_("Malformed packet(b) (missing colon): %s\n\ |
2753 | Packet: '%s'\n"), | |
3fcb8548 | 2754 | p, buf); |
c906108c | 2755 | |
ad10f812 | 2756 | if (reg == NULL) |
8a3fe4f8 AC |
2757 | error (_("Remote sent bad register number %s: %s\n\ |
2758 | Packet: '%s'\n"), | |
3fcb8548 | 2759 | phex_nz (pnum, 0), p, buf); |
c906108c | 2760 | |
cfd77fa1 | 2761 | fieldsize = hex2bin (p, regs, |
23860348 MS |
2762 | register_size (current_gdbarch, |
2763 | reg->regnum)); | |
97345198 | 2764 | p += 2 * fieldsize; |
23860348 MS |
2765 | if (fieldsize < register_size (current_gdbarch, |
2766 | reg->regnum)) | |
8a3fe4f8 | 2767 | warning (_("Remote reply is too short: %s"), buf); |
23860348 MS |
2768 | regcache_raw_supply (current_regcache, |
2769 | reg->regnum, regs); | |
c906108c SS |
2770 | } |
2771 | ||
2772 | if (*p++ != ';') | |
8a3fe4f8 | 2773 | error (_("Remote register badly formatted: %s\nhere: %s"), |
23860348 | 2774 | buf, p); |
c906108c SS |
2775 | } |
2776 | } | |
2777 | /* fall through */ | |
23860348 | 2778 | case 'S': /* Old style status, just signal only. */ |
c906108c SS |
2779 | status->kind = TARGET_WAITKIND_STOPPED; |
2780 | status->value.sig = (enum target_signal) | |
2781 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2782 | ||
0f71a2f6 JM |
2783 | if (buf[3] == 'p') |
2784 | { | |
0f71a2f6 JM |
2785 | thread_num = strtol ((const char *) &buf[4], NULL, 16); |
2786 | record_currthread (thread_num); | |
2787 | } | |
c906108c | 2788 | goto got_status; |
23860348 | 2789 | case 'W': /* Target exited. */ |
c906108c SS |
2790 | { |
2791 | /* The remote process exited. */ | |
2792 | status->kind = TARGET_WAITKIND_EXITED; | |
2793 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
2794 | goto got_status; | |
2795 | } | |
2796 | case 'X': | |
2797 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
2798 | status->value.sig = (enum target_signal) | |
2799 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2800 | kill_kludge = 1; | |
2801 | ||
2802 | goto got_status; | |
23860348 | 2803 | case 'O': /* Console output. */ |
c906108c SS |
2804 | remote_console_output (buf + 1); |
2805 | continue; | |
2806 | case '\0': | |
2807 | if (last_sent_signal != TARGET_SIGNAL_0) | |
2808 | { | |
2809 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 2810 | the remote system doesn't support it. */ |
c906108c SS |
2811 | target_terminal_ours_for_output (); |
2812 | printf_filtered | |
2813 | ("Can't send signals to this remote system. %s not sent.\n", | |
2814 | target_signal_to_name (last_sent_signal)); | |
2815 | last_sent_signal = TARGET_SIGNAL_0; | |
2816 | target_terminal_inferior (); | |
2817 | ||
2818 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
2819 | putpkt ((char *) buf); | |
2820 | continue; | |
2821 | } | |
2822 | /* else fallthrough */ | |
2823 | default: | |
8a3fe4f8 | 2824 | warning (_("Invalid remote reply: %s"), buf); |
c906108c SS |
2825 | continue; |
2826 | } | |
2827 | } | |
c5aa993b | 2828 | got_status: |
c906108c SS |
2829 | if (thread_num != -1) |
2830 | { | |
39f77062 | 2831 | return pid_to_ptid (thread_num); |
c906108c | 2832 | } |
39f77062 | 2833 | return inferior_ptid; |
c906108c SS |
2834 | } |
2835 | ||
23860348 | 2836 | /* Async version of remote_wait. */ |
39f77062 KB |
2837 | static ptid_t |
2838 | remote_async_wait (ptid_t ptid, struct target_waitstatus *status) | |
43ff13b4 | 2839 | { |
d01949b6 | 2840 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 2841 | char *buf = alloca (rs->remote_packet_size); |
b2dd6311 | 2842 | ULONGEST thread_num = -1; |
3c3bea1c | 2843 | ULONGEST addr; |
43ff13b4 JM |
2844 | |
2845 | status->kind = TARGET_WAITKIND_EXITED; | |
2846 | status->value.integer = 0; | |
2847 | ||
3c3bea1c GS |
2848 | remote_stopped_by_watchpoint_p = 0; |
2849 | ||
43ff13b4 JM |
2850 | while (1) |
2851 | { | |
cfd77fa1 | 2852 | char *p; |
c5aa993b | 2853 | |
ed9a39eb | 2854 | if (!target_is_async_p ()) |
43ff13b4 | 2855 | ofunc = signal (SIGINT, remote_interrupt); |
6426a772 JM |
2856 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
2857 | _never_ wait for ever -> test on target_is_async_p(). | |
2858 | However, before we do that we need to ensure that the caller | |
23860348 | 2859 | knows how to take the target into/out of async mode. */ |
24b06219 | 2860 | getpkt (buf, rs->remote_packet_size, wait_forever_enabled_p); |
ed9a39eb | 2861 | if (!target_is_async_p ()) |
43ff13b4 JM |
2862 | signal (SIGINT, ofunc); |
2863 | ||
2864 | /* This is a hook for when we need to do something (perhaps the | |
c5aa993b | 2865 | collection of trace data) every time the target stops. */ |
9a4105ab AC |
2866 | if (deprecated_target_wait_loop_hook) |
2867 | (*deprecated_target_wait_loop_hook) (); | |
43ff13b4 JM |
2868 | |
2869 | switch (buf[0]) | |
2870 | { | |
23860348 | 2871 | case 'E': /* Error of some sort. */ |
8a3fe4f8 | 2872 | warning (_("Remote failure reply: %s"), buf); |
43ff13b4 | 2873 | continue; |
23860348 | 2874 | case 'F': /* File-I/O request. */ |
449092f6 CV |
2875 | remote_fileio_request (buf); |
2876 | continue; | |
23860348 | 2877 | case 'T': /* Status with PC, SP, FP, ... */ |
43ff13b4 | 2878 | { |
cfd77fa1 | 2879 | gdb_byte regs[MAX_REGISTER_SIZE]; |
43ff13b4 | 2880 | |
23860348 | 2881 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
43ff13b4 | 2882 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where |
c5aa993b JM |
2883 | ss = signal number |
2884 | n... = register number | |
2885 | r... = register contents | |
2886 | */ | |
43ff13b4 JM |
2887 | p = &buf[3]; /* after Txx */ |
2888 | ||
2889 | while (*p) | |
2890 | { | |
cfd77fa1 | 2891 | char *p1; |
43ff13b4 | 2892 | char *p_temp; |
6c3f2dbf | 2893 | int fieldsize; |
3c3bea1c | 2894 | long pnum = 0; |
43ff13b4 | 2895 | |
23860348 MS |
2896 | /* If the packet contains a register number, save it |
2897 | in pnum and set p1 to point to the character | |
2898 | following it. Otherwise p1 points to p. */ | |
3c3bea1c GS |
2899 | |
2900 | /* If this packet is an awatch packet, don't parse the 'a' | |
2901 | as a register number. */ | |
802188a7 | 2902 | |
3c3bea1c GS |
2903 | if (!strncmp (p, "awatch", strlen ("awatch")) != 0) |
2904 | { | |
2905 | /* Read the register number. */ | |
2906 | pnum = strtol (p, &p_temp, 16); | |
cfd77fa1 | 2907 | p1 = p_temp; |
3c3bea1c | 2908 | } |
802188a7 | 2909 | else |
3c3bea1c | 2910 | p1 = p; |
43ff13b4 | 2911 | |
23860348 | 2912 | if (p1 == p) /* No register number present here. */ |
43ff13b4 | 2913 | { |
cfd77fa1 | 2914 | p1 = strchr (p, ':'); |
43ff13b4 | 2915 | if (p1 == NULL) |
8a3fe4f8 AC |
2916 | error (_("Malformed packet(a) (missing colon): %s\n\ |
2917 | Packet: '%s'\n"), | |
3fcb8548 | 2918 | p, buf); |
3c3bea1c | 2919 | if (strncmp (p, "thread", p1 - p) == 0) |
43ff13b4 JM |
2920 | { |
2921 | p_temp = unpack_varlen_hex (++p1, &thread_num); | |
2922 | record_currthread (thread_num); | |
cfd77fa1 | 2923 | p = p_temp; |
43ff13b4 | 2924 | } |
3c3bea1c GS |
2925 | else if ((strncmp (p, "watch", p1 - p) == 0) |
2926 | || (strncmp (p, "rwatch", p1 - p) == 0) | |
2927 | || (strncmp (p, "awatch", p1 - p) == 0)) | |
2928 | { | |
2929 | remote_stopped_by_watchpoint_p = 1; | |
2930 | p = unpack_varlen_hex (++p1, &addr); | |
2931 | remote_watch_data_address = (CORE_ADDR)addr; | |
2932 | } | |
2933 | else | |
2934 | { | |
2935 | /* Silently skip unknown optional info. */ | |
cfd77fa1 | 2936 | p_temp = strchr (p1 + 1, ';'); |
3c3bea1c GS |
2937 | if (p_temp) |
2938 | p = p_temp; | |
2939 | } | |
43ff13b4 | 2940 | } |
802188a7 | 2941 | |
43ff13b4 JM |
2942 | else |
2943 | { | |
ad10f812 | 2944 | struct packet_reg *reg = packet_reg_from_pnum (rs, pnum); |
43ff13b4 | 2945 | p = p1; |
43ff13b4 | 2946 | if (*p++ != ':') |
8a3fe4f8 AC |
2947 | error (_("Malformed packet(b) (missing colon): %s\n\ |
2948 | Packet: '%s'\n"), | |
3fcb8548 | 2949 | p, buf); |
43ff13b4 | 2950 | |
ad10f812 | 2951 | if (reg == NULL) |
8a3fe4f8 AC |
2952 | error (_("Remote sent bad register number %ld: %s\n\ |
2953 | Packet: '%s'\n"), | |
3fcb8548 | 2954 | pnum, p, buf); |
43ff13b4 | 2955 | |
cfd77fa1 | 2956 | fieldsize = hex2bin (p, regs, |
23860348 MS |
2957 | register_size (current_gdbarch, |
2958 | reg->regnum)); | |
6c3f2dbf | 2959 | p += 2 * fieldsize; |
23860348 MS |
2960 | if (fieldsize < register_size (current_gdbarch, |
2961 | reg->regnum)) | |
8a3fe4f8 | 2962 | warning (_("Remote reply is too short: %s"), buf); |
23a6d369 | 2963 | regcache_raw_supply (current_regcache, reg->regnum, regs); |
43ff13b4 JM |
2964 | } |
2965 | ||
2966 | if (*p++ != ';') | |
8a3fe4f8 | 2967 | error (_("Remote register badly formatted: %s\nhere: %s"), |
0a2cfde4 | 2968 | buf, p); |
43ff13b4 JM |
2969 | } |
2970 | } | |
2971 | /* fall through */ | |
23860348 | 2972 | case 'S': /* Old style status, just signal only. */ |
43ff13b4 JM |
2973 | status->kind = TARGET_WAITKIND_STOPPED; |
2974 | status->value.sig = (enum target_signal) | |
2975 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2976 | ||
2977 | if (buf[3] == 'p') | |
2978 | { | |
43ff13b4 JM |
2979 | thread_num = strtol ((const char *) &buf[4], NULL, 16); |
2980 | record_currthread (thread_num); | |
2981 | } | |
43ff13b4 | 2982 | goto got_status; |
23860348 | 2983 | case 'W': /* Target exited. */ |
43ff13b4 JM |
2984 | { |
2985 | /* The remote process exited. */ | |
2986 | status->kind = TARGET_WAITKIND_EXITED; | |
2987 | status->value.integer = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
2988 | goto got_status; | |
2989 | } | |
2990 | case 'X': | |
2991 | status->kind = TARGET_WAITKIND_SIGNALLED; | |
2992 | status->value.sig = (enum target_signal) | |
2993 | (((fromhex (buf[1])) << 4) + (fromhex (buf[2]))); | |
2994 | kill_kludge = 1; | |
2995 | ||
2996 | goto got_status; | |
23860348 | 2997 | case 'O': /* Console output. */ |
43ff13b4 | 2998 | remote_console_output (buf + 1); |
c4093a6a | 2999 | /* Return immediately to the event loop. The event loop will |
23860348 | 3000 | still be waiting on the inferior afterwards. */ |
c4093a6a JM |
3001 | status->kind = TARGET_WAITKIND_IGNORE; |
3002 | goto got_status; | |
43ff13b4 JM |
3003 | case '\0': |
3004 | if (last_sent_signal != TARGET_SIGNAL_0) | |
3005 | { | |
3006 | /* Zero length reply means that we tried 'S' or 'C' and | |
c5aa993b | 3007 | the remote system doesn't support it. */ |
43ff13b4 JM |
3008 | target_terminal_ours_for_output (); |
3009 | printf_filtered | |
3010 | ("Can't send signals to this remote system. %s not sent.\n", | |
3011 | target_signal_to_name (last_sent_signal)); | |
3012 | last_sent_signal = TARGET_SIGNAL_0; | |
3013 | target_terminal_inferior (); | |
3014 | ||
3015 | strcpy ((char *) buf, last_sent_step ? "s" : "c"); | |
3016 | putpkt ((char *) buf); | |
3017 | continue; | |
3018 | } | |
3019 | /* else fallthrough */ | |
3020 | default: | |
8a3fe4f8 | 3021 | warning (_("Invalid remote reply: %s"), buf); |
43ff13b4 JM |
3022 | continue; |
3023 | } | |
3024 | } | |
c5aa993b | 3025 | got_status: |
43ff13b4 JM |
3026 | if (thread_num != -1) |
3027 | { | |
39f77062 | 3028 | return pid_to_ptid (thread_num); |
43ff13b4 | 3029 | } |
39f77062 | 3030 | return inferior_ptid; |
43ff13b4 JM |
3031 | } |
3032 | ||
c906108c SS |
3033 | /* Number of bytes of registers this stub implements. */ |
3034 | ||
3035 | static int register_bytes_found; | |
3036 | ||
3037 | /* Read the remote registers into the block REGS. */ | |
ad10f812 | 3038 | /* Currently we just read all the registers, so we don't use regnum. */ |
c906108c | 3039 | |
b96ec7ac AC |
3040 | static int |
3041 | fetch_register_using_p (int regnum) | |
3042 | { | |
3043 | struct remote_state *rs = get_remote_state (); | |
3044 | char *buf = alloca (rs->remote_packet_size), *p; | |
3045 | char regp[MAX_REGISTER_SIZE]; | |
3046 | int i; | |
3047 | ||
fcad0fa4 JB |
3048 | p = buf; |
3049 | *p++ = 'p'; | |
3050 | p += hexnumstr (p, regnum); | |
3051 | *p++ = '\0'; | |
b96ec7ac | 3052 | remote_send (buf, rs->remote_packet_size); |
3f9a994c JB |
3053 | |
3054 | /* If the stub didn't recognize the packet, or if we got an error, | |
3055 | tell our caller. */ | |
3056 | if (buf[0] == '\0' || buf[0] == 'E') | |
3057 | return 0; | |
3058 | ||
3059 | /* If this register is unfetchable, tell the regcache. */ | |
3060 | if (buf[0] == 'x') | |
8480adf2 | 3061 | { |
3f9a994c JB |
3062 | regcache_raw_supply (current_regcache, regnum, NULL); |
3063 | set_register_cached (regnum, -1); | |
8480adf2 | 3064 | return 1; |
b96ec7ac | 3065 | } |
b96ec7ac | 3066 | |
3f9a994c JB |
3067 | /* Otherwise, parse and supply the value. */ |
3068 | p = buf; | |
3069 | i = 0; | |
3070 | while (p[0] != 0) | |
3071 | { | |
3072 | if (p[1] == 0) | |
3073 | { | |
8a3fe4f8 | 3074 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
3075 | return 0; |
3076 | } | |
3077 | ||
3078 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3079 | p += 2; | |
3080 | } | |
3081 | regcache_raw_supply (current_regcache, regnum, regp); | |
3082 | return 1; | |
b96ec7ac AC |
3083 | } |
3084 | ||
c906108c | 3085 | static void |
ad10f812 | 3086 | remote_fetch_registers (int regnum) |
c906108c | 3087 | { |
d01949b6 AC |
3088 | struct remote_state *rs = get_remote_state (); |
3089 | char *buf = alloca (rs->remote_packet_size); | |
c906108c SS |
3090 | int i; |
3091 | char *p; | |
ad10f812 | 3092 | char *regs = alloca (rs->sizeof_g_packet); |
c906108c | 3093 | |
39f77062 | 3094 | set_thread (PIDGET (inferior_ptid), 1); |
c906108c | 3095 | |
b323314b AC |
3096 | if (regnum >= 0) |
3097 | { | |
3098 | struct packet_reg *reg = packet_reg_from_regnum (rs, regnum); | |
3099 | gdb_assert (reg != NULL); | |
3100 | if (!reg->in_g_packet) | |
3101 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 AC |
3102 | _("Attempt to fetch a non G-packet register when this " |
3103 | "remote.c does not support the p-packet.")); | |
b323314b | 3104 | } |
444abaca | 3105 | switch (remote_protocol_packets[PACKET_p].support) |
b96ec7ac AC |
3106 | { |
3107 | case PACKET_DISABLE: | |
3108 | break; | |
3109 | case PACKET_ENABLE: | |
3110 | if (fetch_register_using_p (regnum)) | |
3111 | return; | |
3112 | else | |
8a3fe4f8 | 3113 | error (_("Protocol error: p packet not recognized by stub")); |
b96ec7ac AC |
3114 | case PACKET_SUPPORT_UNKNOWN: |
3115 | if (fetch_register_using_p (regnum)) | |
3116 | { | |
3117 | /* The stub recognized the 'p' packet. Remember this. */ | |
444abaca | 3118 | remote_protocol_packets[PACKET_p].support = PACKET_ENABLE; |
b96ec7ac AC |
3119 | return; |
3120 | } | |
3121 | else | |
3122 | { | |
3123 | /* The stub does not support the 'P' packet. Use 'G' | |
3124 | instead, and don't try using 'P' in the future (it | |
3125 | will just waste our time). */ | |
444abaca | 3126 | remote_protocol_packets[PACKET_p].support = PACKET_DISABLE; |
b96ec7ac AC |
3127 | break; |
3128 | } | |
3129 | } | |
b323314b | 3130 | |
c906108c | 3131 | sprintf (buf, "g"); |
24b06219 | 3132 | remote_send (buf, rs->remote_packet_size); |
c906108c | 3133 | |
11cf8741 JM |
3134 | /* Save the size of the packet sent to us by the target. Its used |
3135 | as a heuristic when determining the max size of packets that the | |
23860348 | 3136 | target can safely receive. */ |
d01949b6 AC |
3137 | if ((rs->actual_register_packet_size) == 0) |
3138 | (rs->actual_register_packet_size) = strlen (buf); | |
c906108c SS |
3139 | |
3140 | /* Unimplemented registers read as all bits zero. */ | |
ad10f812 | 3141 | memset (regs, 0, rs->sizeof_g_packet); |
c906108c SS |
3142 | |
3143 | /* We can get out of synch in various cases. If the first character | |
3144 | in the buffer is not a hex character, assume that has happened | |
3145 | and try to fetch another packet to read. */ | |
3146 | while ((buf[0] < '0' || buf[0] > '9') | |
3de11b2e | 3147 | && (buf[0] < 'A' || buf[0] > 'F') |
c906108c | 3148 | && (buf[0] < 'a' || buf[0] > 'f') |
23860348 | 3149 | && buf[0] != 'x') /* New: unavailable register value. */ |
c906108c SS |
3150 | { |
3151 | if (remote_debug) | |
0f71a2f6 JM |
3152 | fprintf_unfiltered (gdb_stdlog, |
3153 | "Bad register packet; fetching a new packet\n"); | |
24b06219 | 3154 | getpkt (buf, rs->remote_packet_size, 0); |
c906108c SS |
3155 | } |
3156 | ||
3157 | /* Reply describes registers byte by byte, each byte encoded as two | |
3158 | hex characters. Suck them all up, then supply them to the | |
3159 | register cacheing/storage mechanism. */ | |
3160 | ||
3161 | p = buf; | |
ad10f812 | 3162 | for (i = 0; i < rs->sizeof_g_packet; i++) |
c906108c SS |
3163 | { |
3164 | if (p[0] == 0) | |
3165 | break; | |
3166 | if (p[1] == 0) | |
3167 | { | |
8a3fe4f8 | 3168 | warning (_("Remote reply is of odd length: %s"), buf); |
c906108c SS |
3169 | /* Don't change register_bytes_found in this case, and don't |
3170 | print a second warning. */ | |
3171 | goto supply_them; | |
3172 | } | |
3173 | if (p[0] == 'x' && p[1] == 'x') | |
c5aa993b | 3174 | regs[i] = 0; /* 'x' */ |
c906108c SS |
3175 | else |
3176 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
3177 | p += 2; | |
3178 | } | |
3179 | ||
3180 | if (i != register_bytes_found) | |
3181 | { | |
3182 | register_bytes_found = i; | |
2649061d AC |
3183 | if (REGISTER_BYTES_OK_P () |
3184 | && !REGISTER_BYTES_OK (i)) | |
8a3fe4f8 | 3185 | warning (_("Remote reply is too short: %s"), buf); |
c906108c | 3186 | } |
c5aa993b | 3187 | |
b323314b | 3188 | supply_them: |
ad10f812 | 3189 | { |
b323314b AC |
3190 | int i; |
3191 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) | |
ad10f812 | 3192 | { |
b323314b AC |
3193 | struct packet_reg *r = &rs->regs[i]; |
3194 | if (r->in_g_packet) | |
3195 | { | |
8ccc1287 AC |
3196 | if (r->offset * 2 >= strlen (buf)) |
3197 | /* A short packet that didn't include the register's | |
3198 | value, this implies that the register is zero (and | |
3199 | not that the register is unavailable). Supply that | |
3200 | zero value. */ | |
3201 | regcache_raw_supply (current_regcache, r->regnum, NULL); | |
3202 | else if (buf[r->offset * 2] == 'x') | |
3203 | { | |
3204 | gdb_assert (r->offset * 2 < strlen (buf)); | |
3205 | /* The register isn't available, mark it as such (at | |
3206 | the same time setting the value to zero). */ | |
3207 | regcache_raw_supply (current_regcache, r->regnum, NULL); | |
3208 | set_register_cached (i, -1); | |
3209 | } | |
3210 | else | |
3211 | regcache_raw_supply (current_regcache, r->regnum, | |
3212 | regs + r->offset); | |
b323314b | 3213 | } |
ad10f812 AC |
3214 | } |
3215 | } | |
c906108c SS |
3216 | } |
3217 | ||
3218 | /* Prepare to store registers. Since we may send them all (using a | |
3219 | 'G' request), we have to read out the ones we don't want to change | |
3220 | first. */ | |
3221 | ||
c5aa993b | 3222 | static void |
fba45db2 | 3223 | remote_prepare_to_store (void) |
c906108c | 3224 | { |
cf0e1e0d DJ |
3225 | struct remote_state *rs = get_remote_state (); |
3226 | int i; | |
cfd77fa1 | 3227 | gdb_byte buf[MAX_REGISTER_SIZE]; |
cf0e1e0d | 3228 | |
c906108c | 3229 | /* Make sure the entire registers array is valid. */ |
444abaca | 3230 | switch (remote_protocol_packets[PACKET_P].support) |
5a2468f5 JM |
3231 | { |
3232 | case PACKET_DISABLE: | |
3233 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d DJ |
3234 | /* Make sure all the necessary registers are cached. */ |
3235 | for (i = 0; i < NUM_REGS; i++) | |
3236 | if (rs->regs[i].in_g_packet) | |
3237 | regcache_raw_read (current_regcache, rs->regs[i].regnum, buf); | |
5a2468f5 JM |
3238 | break; |
3239 | case PACKET_ENABLE: | |
3240 | break; | |
3241 | } | |
3242 | } | |
3243 | ||
ad10f812 | 3244 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 3245 | packet was not recognized. */ |
5a2468f5 JM |
3246 | |
3247 | static int | |
ad10f812 | 3248 | store_register_using_P (int regnum) |
5a2468f5 | 3249 | { |
d01949b6 | 3250 | struct remote_state *rs = get_remote_state (); |
ad10f812 | 3251 | struct packet_reg *reg = packet_reg_from_regnum (rs, regnum); |
5a2468f5 | 3252 | /* Try storing a single register. */ |
d01949b6 | 3253 | char *buf = alloca (rs->remote_packet_size); |
cfd77fa1 | 3254 | gdb_byte regp[MAX_REGISTER_SIZE]; |
5a2468f5 | 3255 | char *p; |
5a2468f5 | 3256 | |
ecbc58df | 3257 | xsnprintf (buf, rs->remote_packet_size, "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 3258 | p = buf + strlen (buf); |
822c9732 | 3259 | regcache_raw_collect (current_regcache, reg->regnum, regp); |
3acba339 | 3260 | bin2hex (regp, p, register_size (current_gdbarch, reg->regnum)); |
ad10f812 | 3261 | remote_send (buf, rs->remote_packet_size); |
5a2468f5 JM |
3262 | |
3263 | return buf[0] != '\0'; | |
c906108c SS |
3264 | } |
3265 | ||
5a2468f5 | 3266 | |
23860348 MS |
3267 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
3268 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c SS |
3269 | |
3270 | static void | |
ad10f812 | 3271 | remote_store_registers (int regnum) |
c906108c | 3272 | { |
d01949b6 | 3273 | struct remote_state *rs = get_remote_state (); |
193cb69f | 3274 | char *buf; |
cfd77fa1 | 3275 | gdb_byte *regs; |
c906108c SS |
3276 | char *p; |
3277 | ||
39f77062 | 3278 | set_thread (PIDGET (inferior_ptid), 1); |
c906108c | 3279 | |
ad10f812 | 3280 | if (regnum >= 0) |
c906108c | 3281 | { |
444abaca | 3282 | switch (remote_protocol_packets[PACKET_P].support) |
c906108c | 3283 | { |
5a2468f5 JM |
3284 | case PACKET_DISABLE: |
3285 | break; | |
3286 | case PACKET_ENABLE: | |
ad10f812 | 3287 | if (store_register_using_P (regnum)) |
5a2468f5 JM |
3288 | return; |
3289 | else | |
8a3fe4f8 | 3290 | error (_("Protocol error: P packet not recognized by stub")); |
5a2468f5 | 3291 | case PACKET_SUPPORT_UNKNOWN: |
ad10f812 | 3292 | if (store_register_using_P (regnum)) |
5a2468f5 JM |
3293 | { |
3294 | /* The stub recognized the 'P' packet. Remember this. */ | |
444abaca | 3295 | remote_protocol_packets[PACKET_P].support = PACKET_ENABLE; |
5a2468f5 JM |
3296 | return; |
3297 | } | |
3298 | else | |
3299 | { | |
3300 | /* The stub does not support the 'P' packet. Use 'G' | |
3301 | instead, and don't try using 'P' in the future (it | |
3302 | will just waste our time). */ | |
444abaca | 3303 | remote_protocol_packets[PACKET_P].support = PACKET_DISABLE; |
5a2468f5 JM |
3304 | break; |
3305 | } | |
c906108c | 3306 | } |
c906108c SS |
3307 | } |
3308 | ||
193cb69f AC |
3309 | /* Extract all the registers in the regcache copying them into a |
3310 | local buffer. */ | |
3311 | { | |
b323314b | 3312 | int i; |
ad10f812 | 3313 | regs = alloca (rs->sizeof_g_packet); |
170cd118 | 3314 | memset (regs, 0, rs->sizeof_g_packet); |
b323314b | 3315 | for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++) |
193cb69f | 3316 | { |
b323314b AC |
3317 | struct packet_reg *r = &rs->regs[i]; |
3318 | if (r->in_g_packet) | |
822c9732 | 3319 | regcache_raw_collect (current_regcache, r->regnum, regs + r->offset); |
193cb69f AC |
3320 | } |
3321 | } | |
c906108c SS |
3322 | |
3323 | /* Command describes registers byte by byte, | |
3324 | each byte encoded as two hex characters. */ | |
193cb69f AC |
3325 | buf = alloca (rs->remote_packet_size); |
3326 | p = buf; | |
3327 | *p++ = 'G'; | |
c906108c | 3328 | /* remote_prepare_to_store insures that register_bytes_found gets set. */ |
30559e10 | 3329 | bin2hex (regs, p, register_bytes_found); |
24b06219 | 3330 | remote_send (buf, rs->remote_packet_size); |
c906108c | 3331 | } |
c906108c SS |
3332 | \f |
3333 | ||
3334 | /* Return the number of hex digits in num. */ | |
3335 | ||
3336 | static int | |
fba45db2 | 3337 | hexnumlen (ULONGEST num) |
c906108c SS |
3338 | { |
3339 | int i; | |
3340 | ||
3341 | for (i = 0; num != 0; i++) | |
3342 | num >>= 4; | |
3343 | ||
3344 | return max (i, 1); | |
3345 | } | |
3346 | ||
2df3850c | 3347 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
3348 | |
3349 | static int | |
fba45db2 | 3350 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 3351 | { |
c906108c | 3352 | int len = hexnumlen (num); |
2df3850c JM |
3353 | return hexnumnstr (buf, num, len); |
3354 | } | |
3355 | ||
c906108c | 3356 | |
2df3850c | 3357 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 3358 | |
2df3850c | 3359 | static int |
fba45db2 | 3360 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
3361 | { |
3362 | int i; | |
3363 | ||
3364 | buf[width] = '\0'; | |
3365 | ||
3366 | for (i = width - 1; i >= 0; i--) | |
c906108c | 3367 | { |
c5aa993b | 3368 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
3369 | num >>= 4; |
3370 | } | |
3371 | ||
2df3850c | 3372 | return width; |
c906108c SS |
3373 | } |
3374 | ||
23860348 | 3375 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
3376 | |
3377 | static CORE_ADDR | |
fba45db2 | 3378 | remote_address_masked (CORE_ADDR addr) |
c906108c SS |
3379 | { |
3380 | if (remote_address_size > 0 | |
3381 | && remote_address_size < (sizeof (ULONGEST) * 8)) | |
3382 | { | |
3383 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 3384 | in a ULONGEST variable. */ |
c906108c SS |
3385 | ULONGEST mask = 1; |
3386 | mask = (mask << remote_address_size) - 1; | |
3387 | addr &= mask; | |
3388 | } | |
3389 | return addr; | |
3390 | } | |
3391 | ||
3392 | /* Determine whether the remote target supports binary downloading. | |
3393 | This is accomplished by sending a no-op memory write of zero length | |
3394 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
3395 | the whole packet, since many stubs strip the eighth bit and |
3396 | subsequently compute a wrong checksum, which causes real havoc with | |
3397 | remote_write_bytes. | |
7a292a7a | 3398 | |
96baa820 JM |
3399 | NOTE: This can still lose if the serial line is not eight-bit |
3400 | clean. In cases like this, the user should clear "remote | |
23860348 | 3401 | X-packet". */ |
96baa820 | 3402 | |
c906108c | 3403 | static void |
fba45db2 | 3404 | check_binary_download (CORE_ADDR addr) |
c906108c | 3405 | { |
d01949b6 | 3406 | struct remote_state *rs = get_remote_state (); |
24b06219 | 3407 | |
444abaca | 3408 | switch (remote_protocol_packets[PACKET_X].support) |
c906108c | 3409 | { |
96baa820 JM |
3410 | case PACKET_DISABLE: |
3411 | break; | |
3412 | case PACKET_ENABLE: | |
3413 | break; | |
3414 | case PACKET_SUPPORT_UNKNOWN: | |
3415 | { | |
d01949b6 | 3416 | char *buf = alloca (rs->remote_packet_size); |
96baa820 | 3417 | char *p; |
802188a7 | 3418 | |
96baa820 JM |
3419 | p = buf; |
3420 | *p++ = 'X'; | |
3421 | p += hexnumstr (p, (ULONGEST) addr); | |
3422 | *p++ = ','; | |
3423 | p += hexnumstr (p, (ULONGEST) 0); | |
3424 | *p++ = ':'; | |
3425 | *p = '\0'; | |
802188a7 | 3426 | |
96baa820 | 3427 | putpkt_binary (buf, (int) (p - buf)); |
24b06219 | 3428 | getpkt (buf, rs->remote_packet_size, 0); |
c906108c | 3429 | |
96baa820 JM |
3430 | if (buf[0] == '\0') |
3431 | { | |
3432 | if (remote_debug) | |
3433 | fprintf_unfiltered (gdb_stdlog, | |
3434 | "binary downloading NOT suppported by target\n"); | |
444abaca | 3435 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
3436 | } |
3437 | else | |
3438 | { | |
3439 | if (remote_debug) | |
3440 | fprintf_unfiltered (gdb_stdlog, | |
3441 | "binary downloading suppported by target\n"); | |
444abaca | 3442 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
3443 | } |
3444 | break; | |
3445 | } | |
c906108c SS |
3446 | } |
3447 | } | |
3448 | ||
3449 | /* Write memory data directly to the remote machine. | |
3450 | This does not inform the data cache; the data cache uses this. | |
3451 | MEMADDR is the address in the remote memory space. | |
3452 | MYADDR is the address of the buffer in our space. | |
3453 | LEN is the number of bytes. | |
3454 | ||
917317f4 | 3455 | Returns number of bytes transferred, or 0 (setting errno) for |
23860348 | 3456 | error. Only transfer a single packet. */ |
c906108c | 3457 | |
449092f6 | 3458 | int |
cfd77fa1 | 3459 | remote_write_bytes (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
c906108c | 3460 | { |
cfd77fa1 DJ |
3461 | char *buf; |
3462 | char *p; | |
3463 | char *plen; | |
c2d11a7d | 3464 | long sizeof_buf; |
917317f4 JM |
3465 | int plenlen; |
3466 | int todo; | |
3467 | int nr_bytes; | |
a257b5bb | 3468 | int payload_size; |
cfd77fa1 | 3469 | char *payload_start; |
c906108c | 3470 | |
a257b5bb | 3471 | /* Verify that the target can support a binary download. */ |
c906108c SS |
3472 | check_binary_download (memaddr); |
3473 | ||
3de11b2e NS |
3474 | payload_size = get_memory_write_packet_size (); |
3475 | ||
a257b5bb | 3476 | /* Compute the size, and then allocate space for the largest |
3de11b2e NS |
3477 | possible packet. Include space for an extra trailing NUL. */ |
3478 | sizeof_buf = payload_size + 1; | |
c2d11a7d | 3479 | buf = alloca (sizeof_buf); |
c906108c | 3480 | |
a257b5bb | 3481 | /* Compute the size of the actual payload by subtracting out the |
3de11b2e NS |
3482 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". |
3483 | */ | |
3484 | payload_size -= strlen ("$M,:#NN"); | |
3485 | payload_size -= hexnumlen (memaddr); | |
c906108c | 3486 | |
a257b5bb | 3487 | /* Construct the packet header: "[MX]<memaddr>,<len>:". */ |
917317f4 | 3488 | |
a257b5bb | 3489 | /* Append "[XM]". Compute a best guess of the number of bytes |
23860348 | 3490 | actually transfered. */ |
a257b5bb | 3491 | p = buf; |
444abaca | 3492 | switch (remote_protocol_packets[PACKET_X].support) |
c906108c | 3493 | { |
917317f4 JM |
3494 | case PACKET_ENABLE: |
3495 | *p++ = 'X'; | |
23860348 | 3496 | /* Best guess at number of bytes that will fit. */ |
a257b5bb | 3497 | todo = min (len, payload_size); |
3de11b2e NS |
3498 | payload_size -= hexnumlen (todo); |
3499 | todo = min (todo, payload_size); | |
917317f4 JM |
3500 | break; |
3501 | case PACKET_DISABLE: | |
3502 | *p++ = 'M'; | |
23860348 | 3503 | /* Num bytes that will fit. */ |
a257b5bb | 3504 | todo = min (len, payload_size / 2); |
3de11b2e NS |
3505 | payload_size -= hexnumlen (todo); |
3506 | todo = min (todo, payload_size / 2); | |
917317f4 JM |
3507 | break; |
3508 | case PACKET_SUPPORT_UNKNOWN: | |
8e65ff28 | 3509 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3510 | _("remote_write_bytes: bad internal state")); |
7f7e9482 | 3511 | default: |
e2e0b3e5 | 3512 | internal_error (__FILE__, __LINE__, _("bad switch")); |
917317f4 | 3513 | } |
3de11b2e NS |
3514 | if (todo <= 0) |
3515 | internal_error (__FILE__, __LINE__, | |
3516 | _("minumum packet size too small to write data")); | |
802188a7 | 3517 | |
a257b5bb | 3518 | /* Append "<memaddr>". */ |
917317f4 JM |
3519 | memaddr = remote_address_masked (memaddr); |
3520 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb AC |
3521 | |
3522 | /* Append ",". */ | |
917317f4 | 3523 | *p++ = ','; |
802188a7 | 3524 | |
a257b5bb AC |
3525 | /* Append <len>. Retain the location/size of <len>. It may need to |
3526 | be adjusted once the packet body has been created. */ | |
917317f4 JM |
3527 | plen = p; |
3528 | plenlen = hexnumstr (p, (ULONGEST) todo); | |
3529 | p += plenlen; | |
a257b5bb AC |
3530 | |
3531 | /* Append ":". */ | |
917317f4 JM |
3532 | *p++ = ':'; |
3533 | *p = '\0'; | |
802188a7 | 3534 | |
a257b5bb AC |
3535 | /* Append the packet body. */ |
3536 | payload_start = p; | |
444abaca | 3537 | switch (remote_protocol_packets[PACKET_X].support) |
917317f4 JM |
3538 | { |
3539 | case PACKET_ENABLE: | |
3540 | /* Binary mode. Send target system values byte by byte, in | |
3541 | increasing byte addresses. Only escape certain critical | |
3542 | characters. */ | |
3543 | for (nr_bytes = 0; | |
a257b5bb | 3544 | (nr_bytes < todo) && (p - payload_start) < payload_size; |
917317f4 | 3545 | nr_bytes++) |
c906108c | 3546 | { |
917317f4 JM |
3547 | switch (myaddr[nr_bytes] & 0xff) |
3548 | { | |
3549 | case '$': | |
3550 | case '#': | |
3551 | case 0x7d: | |
23860348 | 3552 | /* These must be escaped. */ |
917317f4 JM |
3553 | *p++ = 0x7d; |
3554 | *p++ = (myaddr[nr_bytes] & 0xff) ^ 0x20; | |
3555 | break; | |
3556 | default: | |
3557 | *p++ = myaddr[nr_bytes] & 0xff; | |
3558 | break; | |
3559 | } | |
c906108c | 3560 | } |
917317f4 | 3561 | if (nr_bytes < todo) |
c906108c | 3562 | { |
802188a7 | 3563 | /* Escape chars have filled up the buffer prematurely, |
917317f4 JM |
3564 | and we have actually sent fewer bytes than planned. |
3565 | Fix-up the length field of the packet. Use the same | |
3566 | number of characters as before. */ | |
917317f4 JM |
3567 | plen += hexnumnstr (plen, (ULONGEST) nr_bytes, plenlen); |
3568 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ | |
c906108c | 3569 | } |
917317f4 JM |
3570 | break; |
3571 | case PACKET_DISABLE: | |
3572 | /* Normal mode: Send target system values byte by byte, in | |
3573 | increasing byte addresses. Each byte is encoded as a two hex | |
3574 | value. */ | |
2644f393 | 3575 | nr_bytes = bin2hex (myaddr, p, todo); |
aa6c0017 | 3576 | p += 2 * nr_bytes; |
917317f4 JM |
3577 | break; |
3578 | case PACKET_SUPPORT_UNKNOWN: | |
8e65ff28 | 3579 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3580 | _("remote_write_bytes: bad internal state")); |
7f7e9482 | 3581 | default: |
e2e0b3e5 | 3582 | internal_error (__FILE__, __LINE__, _("bad switch")); |
c906108c | 3583 | } |
802188a7 | 3584 | |
917317f4 | 3585 | putpkt_binary (buf, (int) (p - buf)); |
c2d11a7d | 3586 | getpkt (buf, sizeof_buf, 0); |
802188a7 | 3587 | |
917317f4 JM |
3588 | if (buf[0] == 'E') |
3589 | { | |
3590 | /* There is no correspondance between what the remote protocol | |
3591 | uses for errors and errno codes. We would like a cleaner way | |
3592 | of representing errors (big enough to include errno codes, | |
3593 | bfd_error codes, and others). But for now just return EIO. */ | |
3594 | errno = EIO; | |
3595 | return 0; | |
3596 | } | |
802188a7 | 3597 | |
23860348 MS |
3598 | /* Return NR_BYTES, not TODO, in case escape chars caused us to send |
3599 | fewer bytes than we'd planned. */ | |
917317f4 | 3600 | return nr_bytes; |
c906108c SS |
3601 | } |
3602 | ||
3603 | /* Read memory data directly from the remote machine. | |
3604 | This does not use the data cache; the data cache uses this. | |
3605 | MEMADDR is the address in the remote memory space. | |
3606 | MYADDR is the address of the buffer in our space. | |
3607 | LEN is the number of bytes. | |
3608 | ||
3609 | Returns number of bytes transferred, or 0 for error. */ | |
3610 | ||
917317f4 JM |
3611 | /* NOTE: cagney/1999-10-18: This function (and its siblings in other |
3612 | remote targets) shouldn't attempt to read the entire buffer. | |
3613 | Instead it should read a single packet worth of data and then | |
3614 | return the byte size of that packet to the caller. The caller (its | |
3615 | caller and its callers caller ;-) already contains code for | |
23860348 | 3616 | handling partial reads. */ |
917317f4 | 3617 | |
449092f6 | 3618 | int |
cfd77fa1 | 3619 | remote_read_bytes (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
c906108c | 3620 | { |
11cf8741 | 3621 | char *buf; |
23860348 | 3622 | int max_buf_size; /* Max size of packet output buffer. */ |
c2d11a7d | 3623 | long sizeof_buf; |
c906108c SS |
3624 | int origlen; |
3625 | ||
23860348 | 3626 | /* Create a buffer big enough for this packet. */ |
11cf8741 | 3627 | max_buf_size = get_memory_read_packet_size (); |
23860348 | 3628 | sizeof_buf = max_buf_size + 1; /* Space for trailing NULL. */ |
c2d11a7d | 3629 | buf = alloca (sizeof_buf); |
c906108c SS |
3630 | |
3631 | origlen = len; | |
3632 | while (len > 0) | |
3633 | { | |
c906108c SS |
3634 | char *p; |
3635 | int todo; | |
3636 | int i; | |
3637 | ||
c5aa993b | 3638 | todo = min (len, max_buf_size / 2); /* num bytes that will fit */ |
c906108c SS |
3639 | |
3640 | /* construct "m"<memaddr>","<len>" */ | |
3641 | /* sprintf (buf, "m%lx,%x", (unsigned long) memaddr, todo); */ | |
3642 | memaddr = remote_address_masked (memaddr); | |
3643 | p = buf; | |
3644 | *p++ = 'm'; | |
3645 | p += hexnumstr (p, (ULONGEST) memaddr); | |
3646 | *p++ = ','; | |
3647 | p += hexnumstr (p, (ULONGEST) todo); | |
3648 | *p = '\0'; | |
3649 | ||
3650 | putpkt (buf); | |
c2d11a7d | 3651 | getpkt (buf, sizeof_buf, 0); |
c906108c | 3652 | |
66504d44 MS |
3653 | if (buf[0] == 'E' |
3654 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
3655 | && buf[3] == '\0') | |
c906108c | 3656 | { |
23860348 MS |
3657 | /* There is no correspondance between what the remote |
3658 | protocol uses for errors and errno codes. We would like | |
3659 | a cleaner way of representing errors (big enough to | |
3660 | include errno codes, bfd_error codes, and others). But | |
3661 | for now just return EIO. */ | |
c906108c SS |
3662 | errno = EIO; |
3663 | return 0; | |
3664 | } | |
3665 | ||
c5aa993b JM |
3666 | /* Reply describes memory byte by byte, |
3667 | each byte encoded as two hex characters. */ | |
c906108c SS |
3668 | |
3669 | p = buf; | |
30559e10 | 3670 | if ((i = hex2bin (p, myaddr, todo)) < todo) |
c906108c | 3671 | { |
30559e10 | 3672 | /* Reply is short. This means that we were able to read |
23860348 | 3673 | only part of what we wanted to. */ |
30559e10 | 3674 | return i + (origlen - len); |
c906108c SS |
3675 | } |
3676 | myaddr += todo; | |
3677 | memaddr += todo; | |
3678 | len -= todo; | |
3679 | } | |
3680 | return origlen; | |
3681 | } | |
3682 | \f | |
3683 | /* Read or write LEN bytes from inferior memory at MEMADDR, | |
23860348 MS |
3684 | transferring to or from debugger address BUFFER. Write to inferior |
3685 | if SHOULD_WRITE is nonzero. Returns length of data written or | |
3686 | read; 0 for error. TARGET is unused. */ | |
392a587b | 3687 | |
c906108c | 3688 | static int |
961cb7b5 | 3689 | remote_xfer_memory (CORE_ADDR mem_addr, gdb_byte *buffer, int mem_len, |
0a65a603 | 3690 | int should_write, struct mem_attrib *attrib, |
29e57380 | 3691 | struct target_ops *target) |
c906108c | 3692 | { |
392a587b JM |
3693 | CORE_ADDR targ_addr; |
3694 | int targ_len; | |
4930751a C |
3695 | int res; |
3696 | ||
f6684c31 | 3697 | /* Should this be the selected frame? */ |
23860348 MS |
3698 | gdbarch_remote_translate_xfer_address (current_gdbarch, |
3699 | current_regcache, | |
f6684c31 AC |
3700 | mem_addr, mem_len, |
3701 | &targ_addr, &targ_len); | |
392a587b | 3702 | if (targ_len <= 0) |
c906108c | 3703 | return 0; |
c906108c | 3704 | |
4930751a C |
3705 | if (should_write) |
3706 | res = remote_write_bytes (targ_addr, buffer, targ_len); | |
3707 | else | |
3708 | res = remote_read_bytes (targ_addr, buffer, targ_len); | |
3709 | ||
3710 | return res; | |
c906108c SS |
3711 | } |
3712 | ||
c906108c | 3713 | static void |
fba45db2 | 3714 | remote_files_info (struct target_ops *ignore) |
c906108c SS |
3715 | { |
3716 | puts_filtered ("Debugging a target over a serial line.\n"); | |
3717 | } | |
3718 | \f | |
3719 | /* Stuff for dealing with the packets which are part of this protocol. | |
3720 | See comment at top of file for details. */ | |
3721 | ||
23860348 MS |
3722 | /* Read a single character from the remote end, masking it down to 7 |
3723 | bits. */ | |
c906108c SS |
3724 | |
3725 | static int | |
fba45db2 | 3726 | readchar (int timeout) |
c906108c SS |
3727 | { |
3728 | int ch; | |
3729 | ||
2cd58942 | 3730 | ch = serial_readchar (remote_desc, timeout); |
c906108c | 3731 | |
2acceee2 JM |
3732 | if (ch >= 0) |
3733 | return (ch & 0x7f); | |
3734 | ||
3735 | switch ((enum serial_rc) ch) | |
c906108c SS |
3736 | { |
3737 | case SERIAL_EOF: | |
2acceee2 | 3738 | target_mourn_inferior (); |
8a3fe4f8 | 3739 | error (_("Remote connection closed")); |
2acceee2 | 3740 | /* no return */ |
c906108c | 3741 | case SERIAL_ERROR: |
e2e0b3e5 | 3742 | perror_with_name (_("Remote communication error")); |
2acceee2 | 3743 | /* no return */ |
c906108c | 3744 | case SERIAL_TIMEOUT: |
2acceee2 | 3745 | break; |
c906108c | 3746 | } |
2acceee2 | 3747 | return ch; |
c906108c SS |
3748 | } |
3749 | ||
3750 | /* Send the command in BUF to the remote machine, and read the reply | |
3751 | into BUF. Report an error if we get an error reply. */ | |
3752 | ||
3753 | static void | |
c2d11a7d JM |
3754 | remote_send (char *buf, |
3755 | long sizeof_buf) | |
c906108c SS |
3756 | { |
3757 | putpkt (buf); | |
c2d11a7d | 3758 | getpkt (buf, sizeof_buf, 0); |
c906108c SS |
3759 | |
3760 | if (buf[0] == 'E') | |
8a3fe4f8 | 3761 | error (_("Remote failure reply: %s"), buf); |
c906108c SS |
3762 | } |
3763 | ||
3764 | /* Display a null-terminated packet on stdout, for debugging, using C | |
3765 | string notation. */ | |
3766 | ||
3767 | static void | |
fba45db2 | 3768 | print_packet (char *buf) |
c906108c SS |
3769 | { |
3770 | puts_filtered ("\""); | |
43e526b9 | 3771 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
3772 | puts_filtered ("\""); |
3773 | } | |
3774 | ||
3775 | int | |
fba45db2 | 3776 | putpkt (char *buf) |
c906108c SS |
3777 | { |
3778 | return putpkt_binary (buf, strlen (buf)); | |
3779 | } | |
3780 | ||
3781 | /* Send a packet to the remote machine, with error checking. The data | |
23860348 | 3782 | of the packet is in BUF. The string in BUF can be at most |
24b06219 | 3783 | RS->remote_packet_size - 5 to account for the $, # and checksum, |
23860348 MS |
3784 | and for a possible /0 if we are debugging (remote_debug) and want |
3785 | to print the sent packet as a string. */ | |
c906108c SS |
3786 | |
3787 | static int | |
fba45db2 | 3788 | putpkt_binary (char *buf, int cnt) |
c906108c | 3789 | { |
d01949b6 | 3790 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3791 | int i; |
3792 | unsigned char csum = 0; | |
11cf8741 | 3793 | char *buf2 = alloca (cnt + 6); |
24b06219 | 3794 | long sizeof_junkbuf = rs->remote_packet_size; |
c2d11a7d | 3795 | char *junkbuf = alloca (sizeof_junkbuf); |
085dd6e6 | 3796 | |
c906108c SS |
3797 | int ch; |
3798 | int tcount = 0; | |
3799 | char *p; | |
3800 | ||
3801 | /* Copy the packet into buffer BUF2, encapsulating it | |
3802 | and giving it a checksum. */ | |
3803 | ||
c906108c SS |
3804 | p = buf2; |
3805 | *p++ = '$'; | |
3806 | ||
3807 | for (i = 0; i < cnt; i++) | |
3808 | { | |
3809 | csum += buf[i]; | |
3810 | *p++ = buf[i]; | |
3811 | } | |
3812 | *p++ = '#'; | |
3813 | *p++ = tohex ((csum >> 4) & 0xf); | |
3814 | *p++ = tohex (csum & 0xf); | |
3815 | ||
3816 | /* Send it over and over until we get a positive ack. */ | |
3817 | ||
3818 | while (1) | |
3819 | { | |
3820 | int started_error_output = 0; | |
3821 | ||
3822 | if (remote_debug) | |
3823 | { | |
3824 | *p = '\0'; | |
43e526b9 JM |
3825 | fprintf_unfiltered (gdb_stdlog, "Sending packet: "); |
3826 | fputstrn_unfiltered (buf2, p - buf2, 0, gdb_stdlog); | |
d4f3574e | 3827 | fprintf_unfiltered (gdb_stdlog, "..."); |
0f71a2f6 | 3828 | gdb_flush (gdb_stdlog); |
c906108c | 3829 | } |
2cd58942 | 3830 | if (serial_write (remote_desc, buf2, p - buf2)) |
e2e0b3e5 | 3831 | perror_with_name (_("putpkt: write failed")); |
c906108c | 3832 | |
23860348 | 3833 | /* Read until either a timeout occurs (-2) or '+' is read. */ |
c906108c SS |
3834 | while (1) |
3835 | { | |
3836 | ch = readchar (remote_timeout); | |
3837 | ||
c5aa993b | 3838 | if (remote_debug) |
c906108c SS |
3839 | { |
3840 | switch (ch) | |
3841 | { | |
3842 | case '+': | |
1216fa2c | 3843 | case '-': |
c906108c SS |
3844 | case SERIAL_TIMEOUT: |
3845 | case '$': | |
3846 | if (started_error_output) | |
3847 | { | |
3848 | putchar_unfiltered ('\n'); | |
3849 | started_error_output = 0; | |
3850 | } | |
3851 | } | |
3852 | } | |
3853 | ||
3854 | switch (ch) | |
3855 | { | |
3856 | case '+': | |
3857 | if (remote_debug) | |
0f71a2f6 | 3858 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 3859 | return 1; |
1216fa2c AC |
3860 | case '-': |
3861 | if (remote_debug) | |
3862 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
c906108c | 3863 | case SERIAL_TIMEOUT: |
c5aa993b | 3864 | tcount++; |
c906108c SS |
3865 | if (tcount > 3) |
3866 | return 0; | |
23860348 | 3867 | break; /* Retransmit buffer. */ |
c906108c SS |
3868 | case '$': |
3869 | { | |
40e3f985 | 3870 | if (remote_debug) |
23860348 MS |
3871 | fprintf_unfiltered (gdb_stdlog, |
3872 | "Packet instead of Ack, ignoring it\n"); | |
d6f7abdf AC |
3873 | /* It's probably an old response sent because an ACK |
3874 | was lost. Gobble up the packet and ack it so it | |
3875 | doesn't get retransmitted when we resend this | |
3876 | packet. */ | |
40e3f985 | 3877 | read_frame (junkbuf, sizeof_junkbuf); |
d6f7abdf | 3878 | serial_write (remote_desc, "+", 1); |
23860348 | 3879 | continue; /* Now, go look for +. */ |
c906108c SS |
3880 | } |
3881 | default: | |
3882 | if (remote_debug) | |
3883 | { | |
3884 | if (!started_error_output) | |
3885 | { | |
3886 | started_error_output = 1; | |
0f71a2f6 | 3887 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 3888 | } |
0f71a2f6 | 3889 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
3890 | } |
3891 | continue; | |
3892 | } | |
23860348 | 3893 | break; /* Here to retransmit. */ |
c906108c SS |
3894 | } |
3895 | ||
3896 | #if 0 | |
3897 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
3898 | able to get out next time we call QUIT, without anything as |
3899 | violent as interrupt_query. If we want to provide a way out of | |
3900 | here without getting to the next QUIT, it should be based on | |
3901 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
3902 | if (quit_flag) |
3903 | { | |
3904 | quit_flag = 0; | |
3905 | interrupt_query (); | |
3906 | } | |
3907 | #endif | |
3908 | } | |
3909 | } | |
3910 | ||
3911 | /* Come here after finding the start of the frame. Collect the rest | |
3912 | into BUF, verifying the checksum, length, and handling run-length | |
c2d11a7d JM |
3913 | compression. No more than sizeof_buf-1 characters are read so that |
3914 | the buffer can be NUL terminated. | |
c906108c | 3915 | |
c2d11a7d JM |
3916 | Returns -1 on error, number of characters in buffer (ignoring the |
3917 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 3918 | SERIAL status indications). */ |
c2d11a7d JM |
3919 | |
3920 | static long | |
3921 | read_frame (char *buf, | |
3922 | long sizeof_buf) | |
c906108c SS |
3923 | { |
3924 | unsigned char csum; | |
c2d11a7d | 3925 | long bc; |
c906108c SS |
3926 | int c; |
3927 | ||
3928 | csum = 0; | |
c2d11a7d | 3929 | bc = 0; |
c906108c SS |
3930 | |
3931 | while (1) | |
3932 | { | |
23860348 | 3933 | /* ASSERT (bc < sizeof_buf - 1) - space for trailing NULL. */ |
c906108c | 3934 | c = readchar (remote_timeout); |
c906108c SS |
3935 | switch (c) |
3936 | { | |
3937 | case SERIAL_TIMEOUT: | |
3938 | if (remote_debug) | |
0f71a2f6 | 3939 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 3940 | return -1; |
c906108c SS |
3941 | case '$': |
3942 | if (remote_debug) | |
0f71a2f6 JM |
3943 | fputs_filtered ("Saw new packet start in middle of old one\n", |
3944 | gdb_stdlog); | |
23860348 | 3945 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
3946 | case '#': |
3947 | { | |
3948 | unsigned char pktcsum; | |
e1b09194 AC |
3949 | int check_0 = 0; |
3950 | int check_1 = 0; | |
c906108c | 3951 | |
c2d11a7d | 3952 | buf[bc] = '\0'; |
c906108c | 3953 | |
e1b09194 AC |
3954 | check_0 = readchar (remote_timeout); |
3955 | if (check_0 >= 0) | |
3956 | check_1 = readchar (remote_timeout); | |
802188a7 | 3957 | |
e1b09194 AC |
3958 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
3959 | { | |
3960 | if (remote_debug) | |
23860348 MS |
3961 | fputs_filtered ("Timeout in checksum, retrying\n", |
3962 | gdb_stdlog); | |
e1b09194 AC |
3963 | return -1; |
3964 | } | |
3965 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
3966 | { |
3967 | if (remote_debug) | |
23860348 MS |
3968 | fputs_filtered ("Communication error in checksum\n", |
3969 | gdb_stdlog); | |
40e3f985 FN |
3970 | return -1; |
3971 | } | |
c906108c | 3972 | |
e1b09194 | 3973 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 3974 | if (csum == pktcsum) |
c2d11a7d | 3975 | return bc; |
c906108c | 3976 | |
c5aa993b | 3977 | if (remote_debug) |
c906108c | 3978 | { |
0f71a2f6 | 3979 | fprintf_filtered (gdb_stdlog, |
c5aa993b | 3980 | "Bad checksum, sentsum=0x%x, csum=0x%x, buf=", |
0f71a2f6 JM |
3981 | pktcsum, csum); |
3982 | fputs_filtered (buf, gdb_stdlog); | |
3983 | fputs_filtered ("\n", gdb_stdlog); | |
c906108c | 3984 | } |
c2d11a7d | 3985 | /* Number of characters in buffer ignoring trailing |
23860348 | 3986 | NULL. */ |
c2d11a7d | 3987 | return -1; |
c906108c | 3988 | } |
23860348 | 3989 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
3990 | { |
3991 | int repeat; | |
3992 | csum += c; | |
c906108c | 3993 | |
b4501125 AC |
3994 | c = readchar (remote_timeout); |
3995 | csum += c; | |
23860348 | 3996 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 3997 | |
23860348 | 3998 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 3999 | |
802188a7 | 4000 | if (repeat > 0 && repeat <= 255 |
c2d11a7d | 4001 | && bc > 0 |
fb6e5c55 | 4002 | && bc + repeat - 1 < sizeof_buf - 1) |
c2c6d25f | 4003 | { |
c2d11a7d JM |
4004 | memset (&buf[bc], buf[bc - 1], repeat); |
4005 | bc += repeat; | |
c2c6d25f JM |
4006 | continue; |
4007 | } | |
4008 | ||
c2d11a7d | 4009 | buf[bc] = '\0'; |
a3f17187 | 4010 | printf_filtered (_("Repeat count %d too large for buffer: "), |
23860348 | 4011 | repeat); |
c2c6d25f JM |
4012 | puts_filtered (buf); |
4013 | puts_filtered ("\n"); | |
c2d11a7d | 4014 | return -1; |
c2c6d25f | 4015 | } |
c906108c | 4016 | default: |
c2d11a7d | 4017 | if (bc < sizeof_buf - 1) |
c906108c | 4018 | { |
c2d11a7d | 4019 | buf[bc++] = c; |
c906108c SS |
4020 | csum += c; |
4021 | continue; | |
4022 | } | |
4023 | ||
c2d11a7d | 4024 | buf[bc] = '\0'; |
c906108c SS |
4025 | puts_filtered ("Remote packet too long: "); |
4026 | puts_filtered (buf); | |
4027 | puts_filtered ("\n"); | |
4028 | ||
c2d11a7d | 4029 | return -1; |
c906108c SS |
4030 | } |
4031 | } | |
4032 | } | |
4033 | ||
4034 | /* Read a packet from the remote machine, with error checking, and | |
c2d11a7d JM |
4035 | store it in BUF. If FOREVER, wait forever rather than timing out; |
4036 | this is used (in synchronous mode) to wait for a target that is is | |
4037 | executing user code to stop. */ | |
d9fcf2fb JM |
4038 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
4039 | don't have to change all the calls to getpkt to deal with the | |
4040 | return value, because at the moment I don't know what the right | |
23860348 | 4041 | thing to do it for those. */ |
c906108c | 4042 | void |
c2d11a7d JM |
4043 | getpkt (char *buf, |
4044 | long sizeof_buf, | |
4045 | int forever) | |
d9fcf2fb JM |
4046 | { |
4047 | int timed_out; | |
4048 | ||
4049 | timed_out = getpkt_sane (buf, sizeof_buf, forever); | |
4050 | } | |
4051 | ||
4052 | ||
4053 | /* Read a packet from the remote machine, with error checking, and | |
4054 | store it in BUF. If FOREVER, wait forever rather than timing out; | |
4055 | this is used (in synchronous mode) to wait for a target that is is | |
4056 | executing user code to stop. If FOREVER == 0, this function is | |
4057 | allowed to time out gracefully and return an indication of this to | |
23860348 | 4058 | the caller. */ |
3172dc30 | 4059 | static int |
d9fcf2fb JM |
4060 | getpkt_sane (char *buf, |
4061 | long sizeof_buf, | |
4062 | int forever) | |
c906108c SS |
4063 | { |
4064 | int c; | |
4065 | int tries; | |
4066 | int timeout; | |
4067 | int val; | |
4068 | ||
c5aa993b | 4069 | strcpy (buf, "timeout"); |
c906108c SS |
4070 | |
4071 | if (forever) | |
4072 | { | |
c906108c | 4073 | timeout = watchdog > 0 ? watchdog : -1; |
c906108c SS |
4074 | } |
4075 | ||
4076 | else | |
4077 | timeout = remote_timeout; | |
4078 | ||
4079 | #define MAX_TRIES 3 | |
4080 | ||
4081 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
4082 | { | |
4083 | /* This can loop forever if the remote side sends us characters | |
23860348 MS |
4084 | continuously, but if it pauses, we'll get a zero from |
4085 | readchar because of timeout. Then we'll count that as a | |
4086 | retry. */ | |
c906108c | 4087 | |
23860348 MS |
4088 | /* Note that we will only wait forever prior to the start of a |
4089 | packet. After that, we expect characters to arrive at a | |
4090 | brisk pace. They should show up within remote_timeout | |
4091 | intervals. */ | |
c906108c SS |
4092 | |
4093 | do | |
4094 | { | |
4095 | c = readchar (timeout); | |
4096 | ||
4097 | if (c == SERIAL_TIMEOUT) | |
4098 | { | |
23860348 | 4099 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 4100 | { |
2acceee2 | 4101 | QUIT; |
c906108c | 4102 | target_mourn_inferior (); |
8a3fe4f8 | 4103 | error (_("Watchdog has expired. Target detached.")); |
c906108c | 4104 | } |
c906108c | 4105 | if (remote_debug) |
0f71a2f6 | 4106 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c SS |
4107 | goto retry; |
4108 | } | |
4109 | } | |
4110 | while (c != '$'); | |
4111 | ||
4112 | /* We've found the start of a packet, now collect the data. */ | |
4113 | ||
c2d11a7d | 4114 | val = read_frame (buf, sizeof_buf); |
c906108c | 4115 | |
c2d11a7d | 4116 | if (val >= 0) |
c906108c SS |
4117 | { |
4118 | if (remote_debug) | |
43e526b9 JM |
4119 | { |
4120 | fprintf_unfiltered (gdb_stdlog, "Packet received: "); | |
4121 | fputstr_unfiltered (buf, 0, gdb_stdlog); | |
4122 | fprintf_unfiltered (gdb_stdlog, "\n"); | |
4123 | } | |
2cd58942 | 4124 | serial_write (remote_desc, "+", 1); |
d9fcf2fb | 4125 | return 0; |
c906108c SS |
4126 | } |
4127 | ||
4128 | /* Try the whole thing again. */ | |
4129 | retry: | |
2cd58942 | 4130 | serial_write (remote_desc, "-", 1); |
c906108c SS |
4131 | } |
4132 | ||
23860348 MS |
4133 | /* We have tried hard enough, and just can't receive the packet. |
4134 | Give up. */ | |
c906108c | 4135 | |
a3f17187 | 4136 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); |
2cd58942 | 4137 | serial_write (remote_desc, "+", 1); |
d9fcf2fb | 4138 | return 1; |
c906108c SS |
4139 | } |
4140 | \f | |
4141 | static void | |
fba45db2 | 4142 | remote_kill (void) |
c906108c SS |
4143 | { |
4144 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4145 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4146 | if (kill_kludge) | |
4147 | { | |
4148 | kill_kludge = 0; | |
4149 | target_mourn_inferior (); | |
4150 | return; | |
4151 | } | |
4152 | ||
4153 | /* Use catch_errors so the user can quit from gdb even when we aren't on | |
4154 | speaking terms with the remote system. */ | |
c5aa993b | 4155 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
c906108c SS |
4156 | |
4157 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4158 | we do or not. For the existing stubs, kill is a noop. */ | |
4159 | target_mourn_inferior (); | |
4160 | } | |
4161 | ||
23860348 | 4162 | /* Async version of remote_kill. */ |
43ff13b4 | 4163 | static void |
fba45db2 | 4164 | remote_async_kill (void) |
43ff13b4 | 4165 | { |
23860348 | 4166 | /* Unregister the file descriptor from the event loop. */ |
ed9a39eb | 4167 | if (target_is_async_p ()) |
2cd58942 | 4168 | serial_async (remote_desc, NULL, 0); |
43ff13b4 JM |
4169 | |
4170 | /* For some mysterious reason, wait_for_inferior calls kill instead of | |
4171 | mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */ | |
4172 | if (kill_kludge) | |
4173 | { | |
4174 | kill_kludge = 0; | |
4175 | target_mourn_inferior (); | |
4176 | return; | |
4177 | } | |
4178 | ||
23860348 MS |
4179 | /* Use catch_errors so the user can quit from gdb even when we |
4180 | aren't on speaking terms with the remote system. */ | |
c5aa993b | 4181 | catch_errors ((catch_errors_ftype *) putpkt, "k", "", RETURN_MASK_ERROR); |
43ff13b4 JM |
4182 | |
4183 | /* Don't wait for it to die. I'm not really sure it matters whether | |
4184 | we do or not. For the existing stubs, kill is a noop. */ | |
4185 | target_mourn_inferior (); | |
4186 | } | |
4187 | ||
c906108c | 4188 | static void |
fba45db2 | 4189 | remote_mourn (void) |
c906108c SS |
4190 | { |
4191 | remote_mourn_1 (&remote_ops); | |
4192 | } | |
4193 | ||
53a5351d | 4194 | static void |
fba45db2 | 4195 | remote_async_mourn (void) |
53a5351d JM |
4196 | { |
4197 | remote_mourn_1 (&remote_async_ops); | |
4198 | } | |
4199 | ||
c906108c | 4200 | static void |
fba45db2 | 4201 | extended_remote_mourn (void) |
c906108c SS |
4202 | { |
4203 | /* We do _not_ want to mourn the target like this; this will | |
4204 | remove the extended remote target from the target stack, | |
802188a7 | 4205 | and the next time the user says "run" it'll fail. |
c906108c SS |
4206 | |
4207 | FIXME: What is the right thing to do here? */ | |
4208 | #if 0 | |
4209 | remote_mourn_1 (&extended_remote_ops); | |
4210 | #endif | |
4211 | } | |
4212 | ||
4213 | /* Worker function for remote_mourn. */ | |
4214 | static void | |
fba45db2 | 4215 | remote_mourn_1 (struct target_ops *target) |
c906108c SS |
4216 | { |
4217 | unpush_target (target); | |
4218 | generic_mourn_inferior (); | |
4219 | } | |
4220 | ||
4221 | /* In the extended protocol we want to be able to do things like | |
4222 | "run" and have them basically work as expected. So we need | |
802188a7 | 4223 | a special create_inferior function. |
c906108c SS |
4224 | |
4225 | FIXME: One day add support for changing the exec file | |
4226 | we're debugging, arguments and an environment. */ | |
4227 | ||
4228 | static void | |
23860348 MS |
4229 | extended_remote_create_inferior (char *exec_file, char *args, |
4230 | char **env, int from_tty) | |
c906108c SS |
4231 | { |
4232 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4233 | the remote server. */ | |
4234 | remove_breakpoints (); | |
4235 | ||
4236 | /* Now restart the remote server. */ | |
4237 | extended_remote_restart (); | |
4238 | ||
4239 | /* Now put the breakpoints back in. This way we're safe if the | |
4240 | restart function works via a unix fork on the remote side. */ | |
4241 | insert_breakpoints (); | |
4242 | ||
4243 | /* Clean up from the last time we were running. */ | |
4244 | clear_proceed_status (); | |
c906108c SS |
4245 | } |
4246 | ||
23860348 | 4247 | /* Async version of extended_remote_create_inferior. */ |
43ff13b4 | 4248 | static void |
23860348 MS |
4249 | extended_remote_async_create_inferior (char *exec_file, char *args, |
4250 | char **env, int from_tty) | |
43ff13b4 JM |
4251 | { |
4252 | /* Rip out the breakpoints; we'll reinsert them after restarting | |
4253 | the remote server. */ | |
4254 | remove_breakpoints (); | |
4255 | ||
4256 | /* If running asynchronously, register the target file descriptor | |
23860348 | 4257 | with the event loop. */ |
362646f5 | 4258 | if (target_can_async_p ()) |
2acceee2 | 4259 | target_async (inferior_event_handler, 0); |
43ff13b4 JM |
4260 | |
4261 | /* Now restart the remote server. */ | |
4262 | extended_remote_restart (); | |
4263 | ||
4264 | /* Now put the breakpoints back in. This way we're safe if the | |
4265 | restart function works via a unix fork on the remote side. */ | |
4266 | insert_breakpoints (); | |
4267 | ||
4268 | /* Clean up from the last time we were running. */ | |
4269 | clear_proceed_status (); | |
43ff13b4 | 4270 | } |
c906108c | 4271 | \f |
c5aa993b | 4272 | |
aaab4dba | 4273 | /* On some machines, e.g. 68k, we may use a different breakpoint |
7fec2c59 AC |
4274 | instruction than other targets; in those use |
4275 | DEPRECATED_REMOTE_BREAKPOINT instead of just BREAKPOINT_FROM_PC. | |
4276 | Also, bi-endian targets may define | |
4277 | DEPRECATED_LITTLE_REMOTE_BREAKPOINT and | |
4278 | DEPRECATED_BIG_REMOTE_BREAKPOINT. If none of these are defined, we | |
4279 | just call the standard routines that are in mem-break.c. */ | |
4280 | ||
4281 | /* NOTE: cagney/2003-06-08: This is silly. A remote and simulator | |
4282 | target should use an identical BREAKPOINT_FROM_PC. As for native, | |
4283 | the ARCH-OS-tdep.c code can override the default. */ | |
4284 | ||
4285 | #if defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) && !defined(DEPRECATED_REMOTE_BREAKPOINT) | |
4286 | #define DEPRECATED_REMOTE_BREAKPOINT | |
c906108c SS |
4287 | #endif |
4288 | ||
7fec2c59 | 4289 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c SS |
4290 | |
4291 | /* If the target isn't bi-endian, just pretend it is. */ | |
7fec2c59 AC |
4292 | #if !defined (DEPRECATED_LITTLE_REMOTE_BREAKPOINT) && !defined (DEPRECATED_BIG_REMOTE_BREAKPOINT) |
4293 | #define DEPRECATED_LITTLE_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT | |
4294 | #define DEPRECATED_BIG_REMOTE_BREAKPOINT DEPRECATED_REMOTE_BREAKPOINT | |
c906108c SS |
4295 | #endif |
4296 | ||
7fec2c59 AC |
4297 | static unsigned char big_break_insn[] = DEPRECATED_BIG_REMOTE_BREAKPOINT; |
4298 | static unsigned char little_break_insn[] = DEPRECATED_LITTLE_REMOTE_BREAKPOINT; | |
c906108c | 4299 | |
7fec2c59 | 4300 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c | 4301 | |
aaab4dba AC |
4302 | /* Insert a breakpoint on targets that don't have any better |
4303 | breakpoint support. We read the contents of the target location | |
4304 | and stash it, then overwrite it with a breakpoint instruction. | |
4305 | ADDR is the target location in the target machine. CONTENTS_CACHE | |
4306 | is a pointer to memory allocated for saving the target contents. | |
4307 | It is guaranteed by the caller to be long enough to save the number | |
4308 | of bytes returned by BREAKPOINT_FROM_PC. */ | |
c906108c SS |
4309 | |
4310 | static int | |
5a168c78 | 4311 | remote_insert_breakpoint (CORE_ADDR addr, bfd_byte *contents_cache) |
c906108c | 4312 | { |
d01949b6 | 4313 | struct remote_state *rs = get_remote_state (); |
7fec2c59 | 4314 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c | 4315 | int val; |
802188a7 | 4316 | #endif |
96baa820 JM |
4317 | int bp_size; |
4318 | ||
d471ea57 AC |
4319 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
4320 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
4321 | fails, and the user has explicitly requested the Z support then | |
23860348 | 4322 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 4323 | |
444abaca | 4324 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 4325 | { |
d01949b6 | 4326 | char *buf = alloca (rs->remote_packet_size); |
e514a9d6 | 4327 | char *p = buf; |
802188a7 | 4328 | |
0caabb7e | 4329 | addr = remote_address_masked (addr); |
96baa820 JM |
4330 | *(p++) = 'Z'; |
4331 | *(p++) = '0'; | |
4332 | *(p++) = ','; | |
0caabb7e AC |
4333 | p += hexnumstr (p, (ULONGEST) addr); |
4334 | BREAKPOINT_FROM_PC (&addr, &bp_size); | |
96baa820 | 4335 | sprintf (p, ",%d", bp_size); |
802188a7 | 4336 | |
96baa820 | 4337 | putpkt (buf); |
24b06219 | 4338 | getpkt (buf, rs->remote_packet_size, 0); |
96baa820 | 4339 | |
444abaca | 4340 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 4341 | { |
d471ea57 AC |
4342 | case PACKET_ERROR: |
4343 | return -1; | |
4344 | case PACKET_OK: | |
4345 | return 0; | |
4346 | case PACKET_UNKNOWN: | |
4347 | break; | |
96baa820 JM |
4348 | } |
4349 | } | |
c906108c | 4350 | |
802188a7 | 4351 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c SS |
4352 | val = target_read_memory (addr, contents_cache, sizeof big_break_insn); |
4353 | ||
4354 | if (val == 0) | |
4355 | { | |
d7449b42 | 4356 | if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) |
c906108c SS |
4357 | val = target_write_memory (addr, (char *) big_break_insn, |
4358 | sizeof big_break_insn); | |
4359 | else | |
4360 | val = target_write_memory (addr, (char *) little_break_insn, | |
4361 | sizeof little_break_insn); | |
4362 | } | |
4363 | ||
4364 | return val; | |
4365 | #else | |
4366 | return memory_insert_breakpoint (addr, contents_cache); | |
7fec2c59 | 4367 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c SS |
4368 | } |
4369 | ||
4370 | static int | |
5a168c78 | 4371 | remote_remove_breakpoint (CORE_ADDR addr, bfd_byte *contents_cache) |
c906108c | 4372 | { |
d01949b6 | 4373 | struct remote_state *rs = get_remote_state (); |
96baa820 JM |
4374 | int bp_size; |
4375 | ||
444abaca | 4376 | if (remote_protocol_packets[PACKET_Z0].support != PACKET_DISABLE) |
96baa820 | 4377 | { |
d01949b6 | 4378 | char *buf = alloca (rs->remote_packet_size); |
e514a9d6 | 4379 | char *p = buf; |
802188a7 | 4380 | |
96baa820 JM |
4381 | *(p++) = 'z'; |
4382 | *(p++) = '0'; | |
4383 | *(p++) = ','; | |
4384 | ||
0caabb7e AC |
4385 | addr = remote_address_masked (addr); |
4386 | p += hexnumstr (p, (ULONGEST) addr); | |
4387 | BREAKPOINT_FROM_PC (&addr, &bp_size); | |
96baa820 | 4388 | sprintf (p, ",%d", bp_size); |
802188a7 | 4389 | |
96baa820 | 4390 | putpkt (buf); |
24b06219 | 4391 | getpkt (buf, rs->remote_packet_size, 0); |
96baa820 JM |
4392 | |
4393 | return (buf[0] == 'E'); | |
4394 | } | |
4395 | ||
7fec2c59 | 4396 | #ifdef DEPRECATED_REMOTE_BREAKPOINT |
c906108c SS |
4397 | return target_write_memory (addr, contents_cache, sizeof big_break_insn); |
4398 | #else | |
4399 | return memory_remove_breakpoint (addr, contents_cache); | |
7fec2c59 | 4400 | #endif /* DEPRECATED_REMOTE_BREAKPOINT */ |
c906108c SS |
4401 | } |
4402 | ||
d471ea57 AC |
4403 | static int |
4404 | watchpoint_to_Z_packet (int type) | |
4405 | { | |
4406 | switch (type) | |
4407 | { | |
4408 | case hw_write: | |
4409 | return 2; | |
4410 | break; | |
4411 | case hw_read: | |
4412 | return 3; | |
4413 | break; | |
4414 | case hw_access: | |
4415 | return 4; | |
4416 | break; | |
4417 | default: | |
8e65ff28 | 4418 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4419 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
4420 | } |
4421 | } | |
4422 | ||
3c3bea1c | 4423 | static int |
fba45db2 | 4424 | remote_insert_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 4425 | { |
d01949b6 AC |
4426 | struct remote_state *rs = get_remote_state (); |
4427 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4428 | char *p; |
d471ea57 | 4429 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 4430 | |
444abaca | 4431 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
8a3fe4f8 | 4432 | error (_("Can't set hardware watchpoints without the '%s' (%s) packet."), |
444abaca DJ |
4433 | remote_protocol_packets[PACKET_Z0 + packet].name, |
4434 | remote_protocol_packets[PACKET_Z0 + packet].title); | |
802188a7 | 4435 | |
d471ea57 | 4436 | sprintf (buf, "Z%x,", packet); |
96baa820 JM |
4437 | p = strchr (buf, '\0'); |
4438 | addr = remote_address_masked (addr); | |
4439 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4440 | sprintf (p, ",%x", len); |
802188a7 | 4441 | |
96baa820 | 4442 | putpkt (buf); |
24b06219 | 4443 | getpkt (buf, rs->remote_packet_size, 0); |
96baa820 | 4444 | |
444abaca | 4445 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
4446 | { |
4447 | case PACKET_ERROR: | |
4448 | case PACKET_UNKNOWN: | |
4449 | return -1; | |
4450 | case PACKET_OK: | |
4451 | return 0; | |
4452 | } | |
8e65ff28 | 4453 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4454 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
4455 | } |
4456 | ||
d471ea57 | 4457 | |
3c3bea1c | 4458 | static int |
fba45db2 | 4459 | remote_remove_watchpoint (CORE_ADDR addr, int len, int type) |
96baa820 | 4460 | { |
d01949b6 AC |
4461 | struct remote_state *rs = get_remote_state (); |
4462 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4463 | char *p; |
d471ea57 AC |
4464 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
4465 | ||
444abaca | 4466 | if (remote_protocol_packets[PACKET_Z0 + packet].support == PACKET_DISABLE) |
8a3fe4f8 | 4467 | error (_("Can't clear hardware watchpoints without the '%s' (%s) packet."), |
444abaca DJ |
4468 | remote_protocol_packets[PACKET_Z0 + packet].name, |
4469 | remote_protocol_packets[PACKET_Z0 + packet].title); | |
802188a7 | 4470 | |
d471ea57 | 4471 | sprintf (buf, "z%x,", packet); |
96baa820 JM |
4472 | p = strchr (buf, '\0'); |
4473 | addr = remote_address_masked (addr); | |
4474 | p += hexnumstr (p, (ULONGEST) addr); | |
d4f3574e | 4475 | sprintf (p, ",%x", len); |
96baa820 | 4476 | putpkt (buf); |
24b06219 | 4477 | getpkt (buf, rs->remote_packet_size, 0); |
96baa820 | 4478 | |
444abaca | 4479 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
4480 | { |
4481 | case PACKET_ERROR: | |
4482 | case PACKET_UNKNOWN: | |
4483 | return -1; | |
4484 | case PACKET_OK: | |
4485 | return 0; | |
4486 | } | |
8e65ff28 | 4487 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4488 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
4489 | } |
4490 | ||
3c3bea1c | 4491 | |
501eef12 AC |
4492 | int remote_hw_watchpoint_limit = -1; |
4493 | int remote_hw_breakpoint_limit = -1; | |
d471ea57 | 4494 | |
b9362cc7 | 4495 | static int |
3c3bea1c | 4496 | remote_check_watch_resources (int type, int cnt, int ot) |
96baa820 | 4497 | { |
3c3bea1c GS |
4498 | if (type == bp_hardware_breakpoint) |
4499 | { | |
4500 | if (remote_hw_breakpoint_limit == 0) | |
4501 | return 0; | |
501eef12 AC |
4502 | else if (remote_hw_breakpoint_limit < 0) |
4503 | return 1; | |
3c3bea1c GS |
4504 | else if (cnt <= remote_hw_breakpoint_limit) |
4505 | return 1; | |
4506 | } | |
4507 | else | |
4508 | { | |
4509 | if (remote_hw_watchpoint_limit == 0) | |
4510 | return 0; | |
501eef12 AC |
4511 | else if (remote_hw_watchpoint_limit < 0) |
4512 | return 1; | |
3c3bea1c GS |
4513 | else if (ot) |
4514 | return -1; | |
4515 | else if (cnt <= remote_hw_watchpoint_limit) | |
4516 | return 1; | |
4517 | } | |
4518 | return -1; | |
4519 | } | |
4520 | ||
b9362cc7 | 4521 | static int |
3c3bea1c GS |
4522 | remote_stopped_by_watchpoint (void) |
4523 | { | |
4524 | return remote_stopped_by_watchpoint_p; | |
4525 | } | |
4526 | ||
7270d8f2 OF |
4527 | extern int stepped_after_stopped_by_watchpoint; |
4528 | ||
4aa7a7f5 JJ |
4529 | static int |
4530 | remote_stopped_data_address (struct target_ops *target, CORE_ADDR *addr_p) | |
3c3bea1c | 4531 | { |
4aa7a7f5 | 4532 | int rc = 0; |
7270d8f2 OF |
4533 | if (remote_stopped_by_watchpoint () |
4534 | || stepped_after_stopped_by_watchpoint) | |
4aa7a7f5 JJ |
4535 | { |
4536 | *addr_p = remote_watch_data_address; | |
4537 | rc = 1; | |
4538 | } | |
4539 | ||
4540 | return rc; | |
3c3bea1c GS |
4541 | } |
4542 | ||
4543 | ||
4544 | static int | |
c6826062 | 4545 | remote_insert_hw_breakpoint (CORE_ADDR addr, gdb_byte *shadow) |
3c3bea1c GS |
4546 | { |
4547 | int len = 0; | |
d01949b6 AC |
4548 | struct remote_state *rs = get_remote_state (); |
4549 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4550 | char *p = buf; |
802188a7 | 4551 | |
c8189ed1 GS |
4552 | /* The length field should be set to the size of a breakpoint |
4553 | instruction. */ | |
4554 | ||
802188a7 | 4555 | BREAKPOINT_FROM_PC (&addr, &len); |
3c3bea1c | 4556 | |
444abaca | 4557 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
8a3fe4f8 | 4558 | error (_("Can't set hardware breakpoint without the '%s' (%s) packet."), |
444abaca DJ |
4559 | remote_protocol_packets[PACKET_Z1].name, |
4560 | remote_protocol_packets[PACKET_Z1].title); | |
802188a7 | 4561 | |
96baa820 JM |
4562 | *(p++) = 'Z'; |
4563 | *(p++) = '1'; | |
4564 | *(p++) = ','; | |
802188a7 | 4565 | |
96baa820 JM |
4566 | addr = remote_address_masked (addr); |
4567 | p += hexnumstr (p, (ULONGEST) addr); | |
ad6525fc | 4568 | sprintf (p, ",%x", len); |
96baa820 JM |
4569 | |
4570 | putpkt (buf); | |
24b06219 | 4571 | getpkt (buf, rs->remote_packet_size, 0); |
96baa820 | 4572 | |
444abaca | 4573 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
4574 | { |
4575 | case PACKET_ERROR: | |
4576 | case PACKET_UNKNOWN: | |
4577 | return -1; | |
4578 | case PACKET_OK: | |
4579 | return 0; | |
4580 | } | |
8e65ff28 | 4581 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4582 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
4583 | } |
4584 | ||
d471ea57 | 4585 | |
802188a7 | 4586 | static int |
c6826062 | 4587 | remote_remove_hw_breakpoint (CORE_ADDR addr, gdb_byte *shadow) |
96baa820 | 4588 | { |
3c3bea1c | 4589 | int len; |
d01949b6 AC |
4590 | struct remote_state *rs = get_remote_state (); |
4591 | char *buf = alloca (rs->remote_packet_size); | |
e514a9d6 | 4592 | char *p = buf; |
c8189ed1 GS |
4593 | |
4594 | /* The length field should be set to the size of a breakpoint | |
4595 | instruction. */ | |
4596 | ||
4597 | BREAKPOINT_FROM_PC (&addr, &len); | |
4598 | ||
444abaca | 4599 | if (remote_protocol_packets[PACKET_Z1].support == PACKET_DISABLE) |
8a3fe4f8 | 4600 | error (_("Can't clear hardware breakpoint without the '%s' (%s) packet."), |
444abaca DJ |
4601 | remote_protocol_packets[PACKET_Z1].name, |
4602 | remote_protocol_packets[PACKET_Z1].title); | |
802188a7 | 4603 | |
96baa820 JM |
4604 | *(p++) = 'z'; |
4605 | *(p++) = '1'; | |
4606 | *(p++) = ','; | |
802188a7 | 4607 | |
96baa820 JM |
4608 | addr = remote_address_masked (addr); |
4609 | p += hexnumstr (p, (ULONGEST) addr); | |
ad6525fc | 4610 | sprintf (p, ",%x", len); |
96baa820 JM |
4611 | |
4612 | putpkt(buf); | |
24b06219 | 4613 | getpkt (buf, rs->remote_packet_size, 0); |
802188a7 | 4614 | |
444abaca | 4615 | switch (packet_ok (buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
4616 | { |
4617 | case PACKET_ERROR: | |
4618 | case PACKET_UNKNOWN: | |
4619 | return -1; | |
4620 | case PACKET_OK: | |
4621 | return 0; | |
4622 | } | |
8e65ff28 | 4623 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4624 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 4625 | } |
96baa820 | 4626 | |
c906108c SS |
4627 | /* Some targets are only capable of doing downloads, and afterwards |
4628 | they switch to the remote serial protocol. This function provides | |
4629 | a clean way to get from the download target to the remote target. | |
4630 | It's basically just a wrapper so that we don't have to expose any | |
4631 | of the internal workings of remote.c. | |
4632 | ||
4633 | Prior to calling this routine, you should shutdown the current | |
4634 | target code, else you will get the "A program is being debugged | |
4635 | already..." message. Usually a call to pop_target() suffices. */ | |
4636 | ||
4637 | void | |
fba45db2 | 4638 | push_remote_target (char *name, int from_tty) |
c906108c | 4639 | { |
a3f17187 | 4640 | printf_filtered (_("Switching to remote protocol\n")); |
c906108c SS |
4641 | remote_open (name, from_tty); |
4642 | } | |
4643 | ||
23860348 | 4644 | /* Table used by the crc32 function to calcuate the checksum. */ |
c906108c | 4645 | |
c5aa993b JM |
4646 | static unsigned long crc32_table[256] = |
4647 | {0, 0}; | |
c906108c SS |
4648 | |
4649 | static unsigned long | |
fba45db2 | 4650 | crc32 (unsigned char *buf, int len, unsigned int crc) |
c906108c | 4651 | { |
c5aa993b | 4652 | if (!crc32_table[1]) |
c906108c | 4653 | { |
23860348 | 4654 | /* Initialize the CRC table and the decoding table. */ |
c906108c SS |
4655 | int i, j; |
4656 | unsigned int c; | |
4657 | ||
4658 | for (i = 0; i < 256; i++) | |
c5aa993b JM |
4659 | { |
4660 | for (c = i << 24, j = 8; j > 0; --j) | |
4661 | c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); | |
4662 | crc32_table[i] = c; | |
4663 | } | |
c906108c SS |
4664 | } |
4665 | ||
4666 | while (len--) | |
4667 | { | |
4668 | crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; | |
4669 | buf++; | |
4670 | } | |
4671 | return crc; | |
4672 | } | |
4673 | ||
4674 | /* compare-sections command | |
4675 | ||
4676 | With no arguments, compares each loadable section in the exec bfd | |
4677 | with the same memory range on the target, and reports mismatches. | |
4678 | Useful for verifying the image on the target against the exec file. | |
4679 | Depends on the target understanding the new "qCRC:" request. */ | |
4680 | ||
e514a9d6 JM |
4681 | /* FIXME: cagney/1999-10-26: This command should be broken down into a |
4682 | target method (target verify memory) and generic version of the | |
4683 | actual command. This will allow other high-level code (especially | |
23860348 | 4684 | generic_load()) to make use of this target functionality. */ |
e514a9d6 | 4685 | |
c906108c | 4686 | static void |
fba45db2 | 4687 | compare_sections_command (char *args, int from_tty) |
c906108c | 4688 | { |
d01949b6 | 4689 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4690 | asection *s; |
4691 | unsigned long host_crc, target_crc; | |
4692 | extern bfd *exec_bfd; | |
4693 | struct cleanup *old_chain; | |
085dd6e6 JM |
4694 | char *tmp; |
4695 | char *sectdata; | |
ce359b09 | 4696 | const char *sectname; |
d01949b6 | 4697 | char *buf = alloca (rs->remote_packet_size); |
c906108c SS |
4698 | bfd_size_type size; |
4699 | bfd_vma lma; | |
4700 | int matched = 0; | |
4701 | int mismatched = 0; | |
4702 | ||
4703 | if (!exec_bfd) | |
8a3fe4f8 | 4704 | error (_("command cannot be used without an exec file")); |
c906108c SS |
4705 | if (!current_target.to_shortname || |
4706 | strcmp (current_target.to_shortname, "remote") != 0) | |
8a3fe4f8 | 4707 | error (_("command can only be used with remote target")); |
c906108c | 4708 | |
c5aa993b | 4709 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
4710 | { |
4711 | if (!(s->flags & SEC_LOAD)) | |
c5aa993b | 4712 | continue; /* skip non-loadable section */ |
c906108c | 4713 | |
2c500098 | 4714 | size = bfd_get_section_size (s); |
c906108c | 4715 | if (size == 0) |
c5aa993b | 4716 | continue; /* skip zero-length section */ |
c906108c | 4717 | |
ce359b09 | 4718 | sectname = bfd_get_section_name (exec_bfd, s); |
c906108c | 4719 | if (args && strcmp (args, sectname) != 0) |
c5aa993b | 4720 | continue; /* not the section selected by user */ |
c906108c | 4721 | |
c5aa993b | 4722 | matched = 1; /* do this section */ |
c906108c | 4723 | lma = s->lma; |
23860348 | 4724 | /* FIXME: assumes lma can fit into long. */ |
ecbc58df WZ |
4725 | xsnprintf (buf, rs->remote_packet_size, "qCRC:%lx,%lx", |
4726 | (long) lma, (long) size); | |
c906108c SS |
4727 | putpkt (buf); |
4728 | ||
23860348 MS |
4729 | /* Be clever; compute the host_crc before waiting for target |
4730 | reply. */ | |
c906108c | 4731 | sectdata = xmalloc (size); |
b8c9b27d | 4732 | old_chain = make_cleanup (xfree, sectdata); |
c906108c SS |
4733 | bfd_get_section_contents (exec_bfd, s, sectdata, 0, size); |
4734 | host_crc = crc32 ((unsigned char *) sectdata, size, 0xffffffff); | |
4735 | ||
24b06219 | 4736 | getpkt (buf, rs->remote_packet_size, 0); |
c906108c | 4737 | if (buf[0] == 'E') |
8a3fe4f8 | 4738 | error (_("target memory fault, section %s, range 0x%s -- 0x%s"), |
823ca731 | 4739 | sectname, paddr (lma), paddr (lma + size)); |
c906108c | 4740 | if (buf[0] != 'C') |
8a3fe4f8 | 4741 | error (_("remote target does not support this operation")); |
c906108c SS |
4742 | |
4743 | for (target_crc = 0, tmp = &buf[1]; *tmp; tmp++) | |
4744 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4745 | ||
d4f3574e SS |
4746 | printf_filtered ("Section %s, range 0x%s -- 0x%s: ", |
4747 | sectname, paddr (lma), paddr (lma + size)); | |
c906108c SS |
4748 | if (host_crc == target_crc) |
4749 | printf_filtered ("matched.\n"); | |
4750 | else | |
c5aa993b JM |
4751 | { |
4752 | printf_filtered ("MIS-MATCHED!\n"); | |
4753 | mismatched++; | |
4754 | } | |
c906108c SS |
4755 | |
4756 | do_cleanups (old_chain); | |
4757 | } | |
4758 | if (mismatched > 0) | |
8a3fe4f8 AC |
4759 | warning (_("One or more sections of the remote executable does not match\n\ |
4760 | the loaded file\n")); | |
c906108c | 4761 | if (args && !matched) |
a3f17187 | 4762 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
4763 | } |
4764 | ||
1e3ff5ad | 4765 | static LONGEST |
4b8a223f | 4766 | remote_xfer_partial (struct target_ops *ops, enum target_object object, |
961cb7b5 MK |
4767 | const char *annex, gdb_byte *readbuf, |
4768 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
c906108c | 4769 | { |
d01949b6 | 4770 | struct remote_state *rs = get_remote_state (); |
c906108c | 4771 | int i; |
d01949b6 | 4772 | char *buf2 = alloca (rs->remote_packet_size); |
c906108c | 4773 | char *p2 = &buf2[0]; |
1e3ff5ad | 4774 | char query_type; |
c906108c | 4775 | |
21e3b9b9 DJ |
4776 | /* Handle memory using remote_xfer_memory. */ |
4777 | if (object == TARGET_OBJECT_MEMORY) | |
4778 | { | |
4779 | int xfered; | |
4780 | errno = 0; | |
4781 | ||
4782 | if (writebuf != NULL) | |
4783 | { | |
4784 | void *buffer = xmalloc (len); | |
4785 | struct cleanup *cleanup = make_cleanup (xfree, buffer); | |
4786 | memcpy (buffer, writebuf, len); | |
4787 | xfered = remote_xfer_memory (offset, buffer, len, 1, NULL, ops); | |
4788 | do_cleanups (cleanup); | |
4789 | } | |
4790 | else | |
4791 | xfered = remote_xfer_memory (offset, readbuf, len, 0, NULL, ops); | |
4792 | ||
4793 | if (xfered > 0) | |
4794 | return xfered; | |
4795 | else if (xfered == 0 && errno == 0) | |
4796 | return 0; | |
4797 | else | |
4798 | return -1; | |
4799 | } | |
4800 | ||
4b8a223f AC |
4801 | /* Only handle reads. */ |
4802 | if (writebuf != NULL || readbuf == NULL) | |
4803 | return -1; | |
4804 | ||
1e3ff5ad AC |
4805 | /* Map pre-existing objects onto letters. DO NOT do this for new |
4806 | objects!!! Instead specify new query packets. */ | |
4807 | switch (object) | |
c906108c | 4808 | { |
1e3ff5ad AC |
4809 | case TARGET_OBJECT_KOD: |
4810 | query_type = 'K'; | |
4811 | break; | |
4812 | case TARGET_OBJECT_AVR: | |
4813 | query_type = 'R'; | |
4814 | break; | |
802188a7 RM |
4815 | |
4816 | case TARGET_OBJECT_AUXV: | |
444abaca | 4817 | if (remote_protocol_packets[PACKET_qPart_auxv].support != PACKET_DISABLE) |
802188a7 RM |
4818 | { |
4819 | unsigned int total = 0; | |
4820 | while (len > 0) | |
4821 | { | |
4822 | LONGEST n = min ((rs->remote_packet_size - 2) / 2, len); | |
4823 | snprintf (buf2, rs->remote_packet_size, | |
4824 | "qPart:auxv:read::%s,%s", | |
4825 | phex_nz (offset, sizeof offset), | |
4826 | phex_nz (n, sizeof n)); | |
4827 | i = putpkt (buf2); | |
4828 | if (i < 0) | |
4829 | return total > 0 ? total : i; | |
4830 | buf2[0] = '\0'; | |
4831 | getpkt (buf2, rs->remote_packet_size, 0); | |
444abaca DJ |
4832 | if (packet_ok (buf2, &remote_protocol_packets[PACKET_qPart_auxv]) |
4833 | != PACKET_OK) | |
802188a7 RM |
4834 | return total > 0 ? total : -1; |
4835 | if (buf2[0] == 'O' && buf2[1] == 'K' && buf2[2] == '\0') | |
4836 | break; /* Got EOF indicator. */ | |
4837 | /* Got some data. */ | |
4838 | i = hex2bin (buf2, readbuf, len); | |
4839 | if (i > 0) | |
4840 | { | |
4841 | readbuf = (void *) ((char *) readbuf + i); | |
4842 | offset += i; | |
4843 | len -= i; | |
4844 | total += i; | |
4845 | } | |
4846 | } | |
4847 | return total; | |
4848 | } | |
4849 | return -1; | |
4850 | ||
1e3ff5ad | 4851 | default: |
c906108c SS |
4852 | return -1; |
4853 | } | |
4854 | ||
4b8a223f | 4855 | /* Note: a zero OFFSET and LEN can be used to query the minimum |
1e3ff5ad | 4856 | buffer size. */ |
4b8a223f | 4857 | if (offset == 0 && len == 0) |
1e3ff5ad | 4858 | return (rs->remote_packet_size); |
24b06219 MK |
4859 | /* Minimum outbuf size is RS->remote_packet_size. If LEN is not |
4860 | large enough let the caller deal with it. */ | |
4861 | if (len < rs->remote_packet_size) | |
1e3ff5ad AC |
4862 | return -1; |
4863 | len = rs->remote_packet_size; | |
4864 | ||
23860348 | 4865 | /* Except for querying the minimum buffer size, target must be open. */ |
c5aa993b | 4866 | if (!remote_desc) |
8a3fe4f8 | 4867 | error (_("remote query is only available after target open")); |
c906108c | 4868 | |
1e3ff5ad | 4869 | gdb_assert (annex != NULL); |
4b8a223f | 4870 | gdb_assert (readbuf != NULL); |
c906108c SS |
4871 | |
4872 | *p2++ = 'q'; | |
4873 | *p2++ = query_type; | |
4874 | ||
23860348 MS |
4875 | /* We used one buffer char for the remote protocol q command and |
4876 | another for the query type. As the remote protocol encapsulation | |
4877 | uses 4 chars plus one extra in case we are debugging | |
4878 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
4879 | string. */ | |
c906108c | 4880 | i = 0; |
24b06219 | 4881 | while (annex[i] && (i < (rs->remote_packet_size - 8))) |
c906108c | 4882 | { |
1e3ff5ad AC |
4883 | /* Bad caller may have sent forbidden characters. */ |
4884 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
4885 | *p2++ = annex[i]; | |
c906108c SS |
4886 | i++; |
4887 | } | |
1e3ff5ad AC |
4888 | *p2 = '\0'; |
4889 | gdb_assert (annex[i] == '\0'); | |
c906108c SS |
4890 | |
4891 | i = putpkt (buf2); | |
c5aa993b JM |
4892 | if (i < 0) |
4893 | return i; | |
c906108c | 4894 | |
cfd77fa1 | 4895 | getpkt ((char *) readbuf, len, 0); |
c906108c | 4896 | |
cfd77fa1 | 4897 | return strlen ((char *) readbuf); |
c906108c SS |
4898 | } |
4899 | ||
96baa820 JM |
4900 | static void |
4901 | remote_rcmd (char *command, | |
d9fcf2fb | 4902 | struct ui_file *outbuf) |
96baa820 | 4903 | { |
d01949b6 | 4904 | struct remote_state *rs = get_remote_state (); |
d01949b6 | 4905 | char *buf = alloca (rs->remote_packet_size); |
96baa820 JM |
4906 | char *p = buf; |
4907 | ||
4908 | if (!remote_desc) | |
8a3fe4f8 | 4909 | error (_("remote rcmd is only available after target open")); |
96baa820 | 4910 | |
23860348 | 4911 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
4912 | if (command == NULL) |
4913 | command = ""; | |
4914 | ||
23860348 | 4915 | /* The query prefix. */ |
96baa820 JM |
4916 | strcpy (buf, "qRcmd,"); |
4917 | p = strchr (buf, '\0'); | |
4918 | ||
24b06219 | 4919 | if ((strlen (buf) + strlen (command) * 2 + 8/*misc*/) > rs->remote_packet_size) |
8a3fe4f8 | 4920 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 4921 | |
23860348 | 4922 | /* Encode the actual command. */ |
cfd77fa1 | 4923 | bin2hex ((gdb_byte *) command, p, 0); |
96baa820 JM |
4924 | |
4925 | if (putpkt (buf) < 0) | |
8a3fe4f8 | 4926 | error (_("Communication problem with target.")); |
96baa820 JM |
4927 | |
4928 | /* get/display the response */ | |
4929 | while (1) | |
4930 | { | |
23860348 | 4931 | /* XXX - see also tracepoint.c:remote_get_noisy_reply(). */ |
96baa820 | 4932 | buf[0] = '\0'; |
24b06219 | 4933 | getpkt (buf, rs->remote_packet_size, 0); |
96baa820 | 4934 | if (buf[0] == '\0') |
8a3fe4f8 | 4935 | error (_("Target does not support this command.")); |
96baa820 JM |
4936 | if (buf[0] == 'O' && buf[1] != 'K') |
4937 | { | |
23860348 | 4938 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
4939 | continue; |
4940 | } | |
4941 | if (strcmp (buf, "OK") == 0) | |
4942 | break; | |
7be570e7 JM |
4943 | if (strlen (buf) == 3 && buf[0] == 'E' |
4944 | && isdigit (buf[1]) && isdigit (buf[2])) | |
4945 | { | |
8a3fe4f8 | 4946 | error (_("Protocol error with Rcmd")); |
7be570e7 | 4947 | } |
96baa820 JM |
4948 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
4949 | { | |
4950 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
4951 | fputc_unfiltered (c, outbuf); | |
4952 | } | |
4953 | break; | |
4954 | } | |
4955 | } | |
4956 | ||
c906108c | 4957 | static void |
fba45db2 | 4958 | packet_command (char *args, int from_tty) |
c906108c | 4959 | { |
d01949b6 AC |
4960 | struct remote_state *rs = get_remote_state (); |
4961 | char *buf = alloca (rs->remote_packet_size); | |
c906108c | 4962 | |
c5aa993b | 4963 | if (!remote_desc) |
8a3fe4f8 | 4964 | error (_("command can only be used with remote target")); |
c906108c | 4965 | |
c5aa993b | 4966 | if (!args) |
8a3fe4f8 | 4967 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
4968 | |
4969 | puts_filtered ("sending: "); | |
4970 | print_packet (args); | |
4971 | puts_filtered ("\n"); | |
4972 | putpkt (args); | |
4973 | ||
24b06219 | 4974 | getpkt (buf, rs->remote_packet_size, 0); |
c906108c SS |
4975 | puts_filtered ("received: "); |
4976 | print_packet (buf); | |
4977 | puts_filtered ("\n"); | |
4978 | } | |
4979 | ||
4980 | #if 0 | |
23860348 | 4981 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 4982 | |
a14ed312 | 4983 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 4984 | |
a14ed312 | 4985 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 4986 | |
a14ed312 | 4987 | static void threadalive_test (char *cmd, int tty); |
c906108c | 4988 | |
a14ed312 | 4989 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 4990 | |
23860348 | 4991 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 4992 | |
a14ed312 | 4993 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 4994 | |
23860348 | 4995 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 4996 | |
a14ed312 | 4997 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 4998 | |
a14ed312 | 4999 | static void init_remote_threadtests (void); |
c906108c | 5000 | |
23860348 | 5001 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
5002 | |
5003 | static void | |
fba45db2 | 5004 | threadset_test_cmd (char *cmd, int tty) |
c906108c SS |
5005 | { |
5006 | int sample_thread = SAMPLE_THREAD; | |
5007 | ||
a3f17187 | 5008 | printf_filtered (_("Remote threadset test\n")); |
c906108c SS |
5009 | set_thread (sample_thread, 1); |
5010 | } | |
5011 | ||
5012 | ||
5013 | static void | |
fba45db2 | 5014 | threadalive_test (char *cmd, int tty) |
c906108c SS |
5015 | { |
5016 | int sample_thread = SAMPLE_THREAD; | |
5017 | ||
39f77062 | 5018 | if (remote_thread_alive (pid_to_ptid (sample_thread))) |
c906108c SS |
5019 | printf_filtered ("PASS: Thread alive test\n"); |
5020 | else | |
5021 | printf_filtered ("FAIL: Thread alive test\n"); | |
5022 | } | |
5023 | ||
23860348 | 5024 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
5025 | |
5026 | void | |
fba45db2 | 5027 | output_threadid (char *title, threadref *ref) |
c906108c SS |
5028 | { |
5029 | char hexid[20]; | |
5030 | ||
23860348 | 5031 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
5032 | hexid[16] = 0; |
5033 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
5034 | } | |
5035 | ||
5036 | static void | |
fba45db2 | 5037 | threadlist_test_cmd (char *cmd, int tty) |
c906108c SS |
5038 | { |
5039 | int startflag = 1; | |
5040 | threadref nextthread; | |
5041 | int done, result_count; | |
5042 | threadref threadlist[3]; | |
5043 | ||
5044 | printf_filtered ("Remote Threadlist test\n"); | |
5045 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
5046 | &result_count, &threadlist[0])) | |
5047 | printf_filtered ("FAIL: threadlist test\n"); | |
5048 | else | |
5049 | { | |
5050 | threadref *scan = threadlist; | |
5051 | threadref *limit = scan + result_count; | |
5052 | ||
5053 | while (scan < limit) | |
5054 | output_threadid (" thread ", scan++); | |
5055 | } | |
5056 | } | |
5057 | ||
5058 | void | |
fba45db2 | 5059 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
5060 | { |
5061 | output_threadid ("Threadid: ", &info->threadid); | |
5062 | printf_filtered ("Name: %s\n ", info->shortname); | |
5063 | printf_filtered ("State: %s\n", info->display); | |
5064 | printf_filtered ("other: %s\n\n", info->more_display); | |
5065 | } | |
5066 | ||
5067 | int | |
fba45db2 | 5068 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
5069 | { |
5070 | int result; | |
5071 | int set; | |
5072 | struct gdb_ext_thread_info threadinfo; | |
5073 | ||
5074 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
5075 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
5076 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
5077 | display_thread_info (&threadinfo); | |
5078 | return result; | |
5079 | } | |
5080 | ||
5081 | static void | |
fba45db2 | 5082 | threadinfo_test_cmd (char *cmd, int tty) |
c906108c SS |
5083 | { |
5084 | int athread = SAMPLE_THREAD; | |
5085 | threadref thread; | |
5086 | int set; | |
5087 | ||
5088 | int_to_threadref (&thread, athread); | |
5089 | printf_filtered ("Remote Threadinfo test\n"); | |
5090 | if (!get_and_display_threadinfo (&thread)) | |
5091 | printf_filtered ("FAIL cannot get thread info\n"); | |
5092 | } | |
5093 | ||
5094 | static int | |
fba45db2 | 5095 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
5096 | { |
5097 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
5098 | return get_and_display_threadinfo (ref); | |
5099 | } | |
5100 | ||
5101 | static void | |
fba45db2 | 5102 | threadlist_update_test_cmd (char *cmd, int tty) |
c906108c SS |
5103 | { |
5104 | printf_filtered ("Remote Threadlist update test\n"); | |
5105 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
5106 | } | |
5107 | ||
5108 | static void | |
5109 | init_remote_threadtests (void) | |
5110 | { | |
1bedd215 AC |
5111 | add_com ("tlist", class_obscure, threadlist_test_cmd, _("\ |
5112 | Fetch and print the remote list of thread identifiers, one pkt only")); | |
c906108c | 5113 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
1bedd215 | 5114 | _("Fetch and display info about one thread")); |
c906108c | 5115 | add_com ("tset", class_obscure, threadset_test_cmd, |
1bedd215 | 5116 | _("Test setting to a different thread")); |
c906108c | 5117 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
1bedd215 | 5118 | _("Iterate through updating all remote thread info")); |
c906108c | 5119 | add_com ("talive", class_obscure, threadalive_test, |
1bedd215 | 5120 | _(" Remote thread alive test ")); |
c906108c SS |
5121 | } |
5122 | ||
5123 | #endif /* 0 */ | |
5124 | ||
f3fb8c85 MS |
5125 | /* Convert a thread ID to a string. Returns the string in a static |
5126 | buffer. */ | |
5127 | ||
5128 | static char * | |
39f77062 | 5129 | remote_pid_to_str (ptid_t ptid) |
f3fb8c85 | 5130 | { |
fd0a2a6f | 5131 | static char buf[32]; |
f3fb8c85 | 5132 | |
6c76e4a1 | 5133 | xsnprintf (buf, sizeof buf, "thread %d", ptid_get_pid (ptid)); |
f3fb8c85 MS |
5134 | return buf; |
5135 | } | |
5136 | ||
38691318 KB |
5137 | /* Get the address of the thread local variable in OBJFILE which is |
5138 | stored at OFFSET within the thread local storage for thread PTID. */ | |
5139 | ||
5140 | static CORE_ADDR | |
5141 | remote_get_thread_local_address (ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset) | |
5142 | { | |
444abaca | 5143 | if (remote_protocol_packets[PACKET_qGetTLSAddr].support != PACKET_DISABLE) |
38691318 KB |
5144 | { |
5145 | struct remote_state *rs = get_remote_state (); | |
5146 | char *buf = alloca (rs->remote_packet_size); | |
5147 | char *p = buf; | |
571dd617 | 5148 | enum packet_result result; |
38691318 KB |
5149 | |
5150 | strcpy (p, "qGetTLSAddr:"); | |
5151 | p += strlen (p); | |
5152 | p += hexnumstr (p, PIDGET (ptid)); | |
5153 | *p++ = ','; | |
5154 | p += hexnumstr (p, offset); | |
5155 | *p++ = ','; | |
5156 | p += hexnumstr (p, lm); | |
5157 | *p++ = '\0'; | |
5158 | ||
5159 | putpkt (buf); | |
5160 | getpkt (buf, rs->remote_packet_size, 0); | |
444abaca | 5161 | result = packet_ok (buf, &remote_protocol_packets[PACKET_qGetTLSAddr]); |
571dd617 | 5162 | if (result == PACKET_OK) |
38691318 KB |
5163 | { |
5164 | ULONGEST result; | |
5165 | ||
5166 | unpack_varlen_hex (buf, &result); | |
5167 | return result; | |
5168 | } | |
571dd617 | 5169 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
5170 | throw_error (TLS_GENERIC_ERROR, |
5171 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 5172 | else |
109c3e39 AC |
5173 | throw_error (TLS_GENERIC_ERROR, |
5174 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
5175 | } |
5176 | else | |
109c3e39 AC |
5177 | throw_error (TLS_GENERIC_ERROR, |
5178 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
5179 | /* Not reached. */ |
5180 | return 0; | |
5181 | } | |
5182 | ||
c906108c | 5183 | static void |
fba45db2 | 5184 | init_remote_ops (void) |
c906108c | 5185 | { |
c5aa993b | 5186 | remote_ops.to_shortname = "remote"; |
c906108c | 5187 | remote_ops.to_longname = "Remote serial target in gdb-specific protocol"; |
c5aa993b | 5188 | remote_ops.to_doc = |
c906108c | 5189 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
0d06e24b JM |
5190 | Specify the serial device it is connected to\n\ |
5191 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."; | |
c5aa993b JM |
5192 | remote_ops.to_open = remote_open; |
5193 | remote_ops.to_close = remote_close; | |
c906108c | 5194 | remote_ops.to_detach = remote_detach; |
6ad8ae5c | 5195 | remote_ops.to_disconnect = remote_disconnect; |
c5aa993b | 5196 | remote_ops.to_resume = remote_resume; |
c906108c SS |
5197 | remote_ops.to_wait = remote_wait; |
5198 | remote_ops.to_fetch_registers = remote_fetch_registers; | |
5199 | remote_ops.to_store_registers = remote_store_registers; | |
5200 | remote_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 5201 | remote_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 5202 | remote_ops.to_files_info = remote_files_info; |
c906108c SS |
5203 | remote_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5204 | remote_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
5205 | remote_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; |
5206 | remote_ops.to_stopped_data_address = remote_stopped_data_address; | |
5207 | remote_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; | |
5208 | remote_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
5209 | remote_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
5210 | remote_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
5211 | remote_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
c5aa993b JM |
5212 | remote_ops.to_kill = remote_kill; |
5213 | remote_ops.to_load = generic_load; | |
c906108c SS |
5214 | remote_ops.to_mourn_inferior = remote_mourn; |
5215 | remote_ops.to_thread_alive = remote_thread_alive; | |
0f71a2f6 | 5216 | remote_ops.to_find_new_threads = remote_threads_info; |
0caabb7e | 5217 | remote_ops.to_pid_to_str = remote_pid_to_str; |
cf759d3b | 5218 | remote_ops.to_extra_thread_info = remote_threads_extra_info; |
c906108c | 5219 | remote_ops.to_stop = remote_stop; |
4b8a223f | 5220 | remote_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 5221 | remote_ops.to_rcmd = remote_rcmd; |
38691318 | 5222 | remote_ops.to_get_thread_local_address = remote_get_thread_local_address; |
c906108c | 5223 | remote_ops.to_stratum = process_stratum; |
c5aa993b JM |
5224 | remote_ops.to_has_all_memory = 1; |
5225 | remote_ops.to_has_memory = 1; | |
5226 | remote_ops.to_has_stack = 1; | |
5227 | remote_ops.to_has_registers = 1; | |
5228 | remote_ops.to_has_execution = 1; | |
5229 | remote_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
5230 | remote_ops.to_magic = OPS_MAGIC; | |
c906108c SS |
5231 | } |
5232 | ||
5233 | /* Set up the extended remote vector by making a copy of the standard | |
5234 | remote vector and adding to it. */ | |
5235 | ||
5236 | static void | |
fba45db2 | 5237 | init_extended_remote_ops (void) |
c906108c SS |
5238 | { |
5239 | extended_remote_ops = remote_ops; | |
5240 | ||
0f71a2f6 | 5241 | extended_remote_ops.to_shortname = "extended-remote"; |
c5aa993b | 5242 | extended_remote_ops.to_longname = |
c906108c | 5243 | "Extended remote serial target in gdb-specific protocol"; |
c5aa993b | 5244 | extended_remote_ops.to_doc = |
c906108c SS |
5245 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
5246 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 5247 | extended_remote_ops.to_open = extended_remote_open; |
c906108c SS |
5248 | extended_remote_ops.to_create_inferior = extended_remote_create_inferior; |
5249 | extended_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
0f71a2f6 JM |
5250 | } |
5251 | ||
6426a772 JM |
5252 | static int |
5253 | remote_can_async_p (void) | |
5254 | { | |
23860348 | 5255 | /* We're async whenever the serial device is. */ |
2cd58942 | 5256 | return (current_target.to_async_mask_value) && serial_can_async_p (remote_desc); |
6426a772 JM |
5257 | } |
5258 | ||
5259 | static int | |
5260 | remote_is_async_p (void) | |
5261 | { | |
23860348 | 5262 | /* We're async whenever the serial device is. */ |
2cd58942 | 5263 | return (current_target.to_async_mask_value) && serial_is_async_p (remote_desc); |
6426a772 JM |
5264 | } |
5265 | ||
2acceee2 JM |
5266 | /* Pass the SERIAL event on and up to the client. One day this code |
5267 | will be able to delay notifying the client of an event until the | |
23860348 | 5268 | point where an entire packet has been received. */ |
2acceee2 | 5269 | |
23860348 MS |
5270 | static void (*async_client_callback) (enum inferior_event_type event_type, |
5271 | void *context); | |
2acceee2 JM |
5272 | static void *async_client_context; |
5273 | static serial_event_ftype remote_async_serial_handler; | |
5274 | ||
6426a772 | 5275 | static void |
819cc324 | 5276 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 5277 | { |
2acceee2 JM |
5278 | /* Don't propogate error information up to the client. Instead let |
5279 | the client find out about the error by querying the target. */ | |
5280 | async_client_callback (INF_REG_EVENT, async_client_context); | |
5281 | } | |
5282 | ||
5283 | static void | |
23860348 MS |
5284 | remote_async (void (*callback) (enum inferior_event_type event_type, |
5285 | void *context), void *context) | |
2acceee2 | 5286 | { |
ed9a39eb | 5287 | if (current_target.to_async_mask_value == 0) |
8e65ff28 | 5288 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5289 | _("Calling remote_async when async is masked")); |
ed9a39eb | 5290 | |
2acceee2 JM |
5291 | if (callback != NULL) |
5292 | { | |
2cd58942 | 5293 | serial_async (remote_desc, remote_async_serial_handler, NULL); |
2acceee2 JM |
5294 | async_client_callback = callback; |
5295 | async_client_context = context; | |
5296 | } | |
5297 | else | |
2cd58942 | 5298 | serial_async (remote_desc, NULL, NULL); |
6426a772 JM |
5299 | } |
5300 | ||
43ff13b4 JM |
5301 | /* Target async and target extended-async. |
5302 | ||
5303 | This are temporary targets, until it is all tested. Eventually | |
5304 | async support will be incorporated int the usual 'remote' | |
23860348 | 5305 | target. */ |
43ff13b4 JM |
5306 | |
5307 | static void | |
c2d11a7d | 5308 | init_remote_async_ops (void) |
43ff13b4 JM |
5309 | { |
5310 | remote_async_ops.to_shortname = "async"; | |
23860348 MS |
5311 | remote_async_ops.to_longname = |
5312 | "Remote serial target in async version of the gdb-specific protocol"; | |
c5aa993b | 5313 | remote_async_ops.to_doc = |
43ff13b4 JM |
5314 | "Use a remote computer via a serial line, using a gdb-specific protocol.\n\ |
5315 | Specify the serial device it is connected to (e.g. /dev/ttya)."; | |
c5aa993b JM |
5316 | remote_async_ops.to_open = remote_async_open; |
5317 | remote_async_ops.to_close = remote_close; | |
6ad8ae5c DJ |
5318 | remote_async_ops.to_detach = remote_detach; |
5319 | remote_async_ops.to_disconnect = remote_disconnect; | |
c5aa993b JM |
5320 | remote_async_ops.to_resume = remote_async_resume; |
5321 | remote_async_ops.to_wait = remote_async_wait; | |
5322 | remote_async_ops.to_fetch_registers = remote_fetch_registers; | |
5323 | remote_async_ops.to_store_registers = remote_store_registers; | |
5324 | remote_async_ops.to_prepare_to_store = remote_prepare_to_store; | |
c8e73a31 | 5325 | remote_async_ops.deprecated_xfer_memory = remote_xfer_memory; |
c5aa993b | 5326 | remote_async_ops.to_files_info = remote_files_info; |
43ff13b4 JM |
5327 | remote_async_ops.to_insert_breakpoint = remote_insert_breakpoint; |
5328 | remote_async_ops.to_remove_breakpoint = remote_remove_breakpoint; | |
3c3bea1c GS |
5329 | remote_async_ops.to_can_use_hw_breakpoint = remote_check_watch_resources; |
5330 | remote_async_ops.to_insert_hw_breakpoint = remote_insert_hw_breakpoint; | |
5331 | remote_async_ops.to_remove_hw_breakpoint = remote_remove_hw_breakpoint; | |
5332 | remote_async_ops.to_insert_watchpoint = remote_insert_watchpoint; | |
5333 | remote_async_ops.to_remove_watchpoint = remote_remove_watchpoint; | |
5334 | remote_async_ops.to_stopped_by_watchpoint = remote_stopped_by_watchpoint; | |
5335 | remote_async_ops.to_stopped_data_address = remote_stopped_data_address; | |
6426a772 JM |
5336 | remote_async_ops.to_terminal_inferior = remote_async_terminal_inferior; |
5337 | remote_async_ops.to_terminal_ours = remote_async_terminal_ours; | |
c5aa993b JM |
5338 | remote_async_ops.to_kill = remote_async_kill; |
5339 | remote_async_ops.to_load = generic_load; | |
53a5351d | 5340 | remote_async_ops.to_mourn_inferior = remote_async_mourn; |
c5aa993b JM |
5341 | remote_async_ops.to_thread_alive = remote_thread_alive; |
5342 | remote_async_ops.to_find_new_threads = remote_threads_info; | |
cf759d3b ND |
5343 | remote_async_ops.to_pid_to_str = remote_pid_to_str; |
5344 | remote_async_ops.to_extra_thread_info = remote_threads_extra_info; | |
43ff13b4 | 5345 | remote_async_ops.to_stop = remote_stop; |
4b8a223f | 5346 | remote_async_ops.to_xfer_partial = remote_xfer_partial; |
96baa820 | 5347 | remote_async_ops.to_rcmd = remote_rcmd; |
c5aa993b JM |
5348 | remote_async_ops.to_stratum = process_stratum; |
5349 | remote_async_ops.to_has_all_memory = 1; | |
5350 | remote_async_ops.to_has_memory = 1; | |
5351 | remote_async_ops.to_has_stack = 1; | |
5352 | remote_async_ops.to_has_registers = 1; | |
5353 | remote_async_ops.to_has_execution = 1; | |
5354 | remote_async_ops.to_has_thread_control = tc_schedlock; /* can lock scheduler */ | |
6426a772 JM |
5355 | remote_async_ops.to_can_async_p = remote_can_async_p; |
5356 | remote_async_ops.to_is_async_p = remote_is_async_p; | |
5357 | remote_async_ops.to_async = remote_async; | |
ed9a39eb | 5358 | remote_async_ops.to_async_mask_value = 1; |
c5aa993b | 5359 | remote_async_ops.to_magic = OPS_MAGIC; |
43ff13b4 JM |
5360 | } |
5361 | ||
5362 | /* Set up the async extended remote vector by making a copy of the standard | |
5363 | remote vector and adding to it. */ | |
5364 | ||
5365 | static void | |
c2d11a7d | 5366 | init_extended_async_remote_ops (void) |
43ff13b4 JM |
5367 | { |
5368 | extended_async_remote_ops = remote_async_ops; | |
5369 | ||
5370 | extended_async_remote_ops.to_shortname = "extended-async"; | |
c5aa993b | 5371 | extended_async_remote_ops.to_longname = |
43ff13b4 | 5372 | "Extended remote serial target in async gdb-specific protocol"; |
c5aa993b | 5373 | extended_async_remote_ops.to_doc = |
43ff13b4 JM |
5374 | "Use a remote computer via a serial line, using an async gdb-specific protocol.\n\ |
5375 | Specify the serial device it is connected to (e.g. /dev/ttya).", | |
c5aa993b | 5376 | extended_async_remote_ops.to_open = extended_remote_async_open; |
43ff13b4 JM |
5377 | extended_async_remote_ops.to_create_inferior = extended_remote_async_create_inferior; |
5378 | extended_async_remote_ops.to_mourn_inferior = extended_remote_mourn; | |
5379 | } | |
5380 | ||
37a105a1 DJ |
5381 | static struct cmd_list_element *remote_set_cmdlist; |
5382 | static struct cmd_list_element *remote_show_cmdlist; | |
5383 | ||
5a2468f5 | 5384 | static void |
c2d11a7d | 5385 | set_remote_cmd (char *args, int from_tty) |
5a2468f5 | 5386 | { |
5a2468f5 JM |
5387 | } |
5388 | ||
d471ea57 AC |
5389 | static void |
5390 | show_remote_cmd (char *args, int from_tty) | |
5391 | { | |
37a105a1 DJ |
5392 | /* We can't just use cmd_show_list here, because we want to skip |
5393 | the redundant "show remote Z-packet". */ | |
5394 | struct cleanup *showlist_chain; | |
5395 | struct cmd_list_element *list = remote_show_cmdlist; | |
5396 | ||
5397 | showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist"); | |
5398 | for (; list != NULL; list = list->next) | |
5399 | if (strcmp (list->name, "Z-packet") == 0) | |
5400 | continue; | |
5401 | else if (list->type == show_cmd) | |
5402 | { | |
5403 | struct cleanup *option_chain | |
5404 | = make_cleanup_ui_out_tuple_begin_end (uiout, "option"); | |
5405 | ui_out_field_string (uiout, "name", list->name); | |
5406 | ui_out_text (uiout, ": "); | |
5407 | do_setshow_command ((char *) NULL, from_tty, list); | |
5408 | /* Close the tuple. */ | |
5409 | do_cleanups (option_chain); | |
5410 | } | |
d471ea57 | 5411 | } |
5a2468f5 | 5412 | |
0f71a2f6 | 5413 | static void |
fba45db2 | 5414 | build_remote_gdbarch_data (void) |
0f71a2f6 | 5415 | { |
d696208f | 5416 | remote_address_size = TARGET_ADDR_BIT; |
0f71a2f6 JM |
5417 | } |
5418 | ||
23860348 | 5419 | /* Saved pointer to previous owner of the new_objfile event. */ |
dc8acb97 MS |
5420 | static void (*remote_new_objfile_chain) (struct objfile *); |
5421 | ||
23860348 | 5422 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
5423 | static void |
5424 | remote_new_objfile (struct objfile *objfile) | |
5425 | { | |
23860348 | 5426 | if (remote_desc != 0) /* Have a remote connection. */ |
dc8acb97 MS |
5427 | { |
5428 | remote_check_symbols (objfile); | |
5429 | } | |
23860348 | 5430 | /* Call predecessor on chain, if any. */ |
dc8acb97 MS |
5431 | if (remote_new_objfile_chain != 0 && |
5432 | remote_desc == 0) | |
5433 | remote_new_objfile_chain (objfile); | |
5434 | } | |
5435 | ||
c906108c | 5436 | void |
fba45db2 | 5437 | _initialize_remote (void) |
c906108c | 5438 | { |
0f71a2f6 | 5439 | /* architecture specific data */ |
23860348 MS |
5440 | remote_gdbarch_data_handle = |
5441 | gdbarch_data_register_post_init (init_remote_state); | |
d01949b6 AC |
5442 | |
5443 | /* Old tacky stuff. NOTE: This comes after the remote protocol so | |
5444 | that the remote protocol has been initialized. */ | |
046a4708 AC |
5445 | DEPRECATED_REGISTER_GDBARCH_SWAP (remote_address_size); |
5446 | deprecated_register_gdbarch_swap (NULL, 0, build_remote_gdbarch_data); | |
0f71a2f6 | 5447 | |
c906108c SS |
5448 | init_remote_ops (); |
5449 | add_target (&remote_ops); | |
5450 | ||
5451 | init_extended_remote_ops (); | |
5452 | add_target (&extended_remote_ops); | |
cce74817 | 5453 | |
43ff13b4 JM |
5454 | init_remote_async_ops (); |
5455 | add_target (&remote_async_ops); | |
5456 | ||
5457 | init_extended_async_remote_ops (); | |
5458 | add_target (&extended_async_remote_ops); | |
5459 | ||
dc8acb97 | 5460 | /* Hook into new objfile notification. */ |
9a4105ab AC |
5461 | remote_new_objfile_chain = deprecated_target_new_objfile_hook; |
5462 | deprecated_target_new_objfile_hook = remote_new_objfile; | |
dc8acb97 | 5463 | |
c906108c SS |
5464 | #if 0 |
5465 | init_remote_threadtests (); | |
5466 | #endif | |
5467 | ||
23860348 | 5468 | /* set/show remote ... */ |
d471ea57 | 5469 | |
1bedd215 | 5470 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
5a2468f5 JM |
5471 | Remote protocol specific variables\n\ |
5472 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 5473 | the packets being used"), |
cff3e48b | 5474 | &remote_set_cmdlist, "set remote ", |
23860348 | 5475 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 5476 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
5a2468f5 JM |
5477 | Remote protocol specific variables\n\ |
5478 | Configure various remote-protocol specific variables such as\n\ | |
1bedd215 | 5479 | the packets being used"), |
cff3e48b | 5480 | &remote_show_cmdlist, "show remote ", |
23860348 | 5481 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 5482 | |
1a966eab AC |
5483 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
5484 | Compare section data on target to the exec file.\n\ | |
5485 | Argument is a single section name (default: all loaded sections)."), | |
c906108c SS |
5486 | &cmdlist); |
5487 | ||
1a966eab AC |
5488 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
5489 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
5490 | maintenance packet TEXT\n\ |
5491 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
5492 | this command sends the string TEXT to the inferior, and displays the\n\ | |
5493 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 5494 | terminating `#' character and checksum."), |
c906108c SS |
5495 | &maintenancelist); |
5496 | ||
7915a72c AC |
5497 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
5498 | Set whether to send break if interrupted."), _("\ | |
5499 | Show whether to send break if interrupted."), _("\ | |
5500 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
2c5b56ce | 5501 | NULL, NULL, /* FIXME: i18n: Whether to send break if interrupted is %s. */ |
e707bbc2 | 5502 | &setlist, &showlist); |
c906108c | 5503 | |
23860348 | 5504 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 5505 | |
1a966eab AC |
5506 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
5507 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 5508 | &setlist); |
1a966eab AC |
5509 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
5510 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
5511 | &showlist); |
5512 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
5513 | set_memory_write_packet_size, _("\ |
5514 | Set the maximum number of bytes per memory-write packet.\n\ | |
5515 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
5516 | default packet size. The actual limit is further reduced\n\ | |
5517 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
5518 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
5519 | &remote_set_cmdlist); |
5520 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
5521 | set_memory_read_packet_size, _("\ |
5522 | Set the maximum number of bytes per memory-read packet.\n\ | |
5523 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
5524 | default packet size. The actual limit is further reduced\n\ | |
5525 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
5526 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
5527 | &remote_set_cmdlist); |
5528 | add_cmd ("memory-write-packet-size", no_class, | |
5529 | show_memory_write_packet_size, | |
1a966eab | 5530 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
5531 | &remote_show_cmdlist); |
5532 | add_cmd ("memory-read-packet-size", no_class, | |
5533 | show_memory_read_packet_size, | |
1a966eab | 5534 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 5535 | &remote_show_cmdlist); |
c906108c | 5536 | |
b3f42336 | 5537 | add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
5538 | &remote_hw_watchpoint_limit, _("\ |
5539 | Set the maximum number of target hardware watchpoints."), _("\ | |
5540 | Show the maximum number of target hardware watchpoints."), _("\ | |
5541 | Specify a negative limit for unlimited."), | |
2c5b56ce | 5542 | NULL, NULL, /* FIXME: i18n: The maximum number of target hardware watchpoints is %s. */ |
b3f42336 AC |
5543 | &remote_set_cmdlist, &remote_show_cmdlist); |
5544 | add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class, | |
7915a72c AC |
5545 | &remote_hw_breakpoint_limit, _("\ |
5546 | Set the maximum number of target hardware breakpoints."), _("\ | |
5547 | Show the maximum number of target hardware breakpoints."), _("\ | |
5548 | Specify a negative limit for unlimited."), | |
2c5b56ce | 5549 | NULL, NULL, /* FIXME: i18n: The maximum number of target hardware breakpoints is %s. */ |
b3f42336 | 5550 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 5551 | |
4d28ad1e AC |
5552 | add_setshow_integer_cmd ("remoteaddresssize", class_obscure, |
5553 | &remote_address_size, _("\ | |
5554 | Set the maximum size of the address (in bits) in a memory packet."), _("\ | |
5555 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
5556 | NULL, | |
5557 | NULL, /* FIXME: i18n: */ | |
5558 | &setlist, &showlist); | |
c906108c | 5559 | |
444abaca | 5560 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
96baa820 | 5561 | "X", "binary-download", |
444abaca DJ |
5562 | set_remote_protocol_packet_cmd, |
5563 | show_remote_protocol_packet_cmd, | |
d471ea57 AC |
5564 | &remote_set_cmdlist, &remote_show_cmdlist, |
5565 | 1); | |
0f71a2f6 | 5566 | |
444abaca | 5567 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
506fb367 | 5568 | "vCont", "verbose-resume", |
444abaca DJ |
5569 | set_remote_protocol_packet_cmd, |
5570 | show_remote_protocol_packet_cmd, | |
506fb367 DJ |
5571 | &remote_set_cmdlist, &remote_show_cmdlist, |
5572 | 0); | |
5573 | ||
444abaca | 5574 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
dc8acb97 | 5575 | "qSymbol", "symbol-lookup", |
444abaca DJ |
5576 | set_remote_protocol_packet_cmd, |
5577 | show_remote_protocol_packet_cmd, | |
dc8acb97 MS |
5578 | &remote_set_cmdlist, &remote_show_cmdlist, |
5579 | 0); | |
5580 | ||
444abaca | 5581 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
d471ea57 | 5582 | "P", "set-register", |
444abaca DJ |
5583 | set_remote_protocol_packet_cmd, |
5584 | show_remote_protocol_packet_cmd, | |
d471ea57 AC |
5585 | &remote_set_cmdlist, &remote_show_cmdlist, |
5586 | 1); | |
5587 | ||
444abaca | 5588 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
b96ec7ac | 5589 | "p", "fetch-register", |
444abaca DJ |
5590 | set_remote_protocol_packet_cmd, |
5591 | show_remote_protocol_packet_cmd, | |
b96ec7ac AC |
5592 | &remote_set_cmdlist, &remote_show_cmdlist, |
5593 | 1); | |
5594 | ||
444abaca | 5595 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
d471ea57 | 5596 | "Z0", "software-breakpoint", |
444abaca DJ |
5597 | set_remote_protocol_packet_cmd, |
5598 | show_remote_protocol_packet_cmd, | |
d471ea57 AC |
5599 | &remote_set_cmdlist, &remote_show_cmdlist, |
5600 | 0); | |
5601 | ||
444abaca | 5602 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
d471ea57 | 5603 | "Z1", "hardware-breakpoint", |
444abaca DJ |
5604 | set_remote_protocol_packet_cmd, |
5605 | show_remote_protocol_packet_cmd, | |
d471ea57 AC |
5606 | &remote_set_cmdlist, &remote_show_cmdlist, |
5607 | 0); | |
5608 | ||
444abaca | 5609 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
d471ea57 | 5610 | "Z2", "write-watchpoint", |
444abaca DJ |
5611 | set_remote_protocol_packet_cmd, |
5612 | show_remote_protocol_packet_cmd, | |
d471ea57 AC |
5613 | &remote_set_cmdlist, &remote_show_cmdlist, |
5614 | 0); | |
5615 | ||
444abaca | 5616 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
d471ea57 | 5617 | "Z3", "read-watchpoint", |
444abaca DJ |
5618 | set_remote_protocol_packet_cmd, |
5619 | show_remote_protocol_packet_cmd, | |
d471ea57 AC |
5620 | &remote_set_cmdlist, &remote_show_cmdlist, |
5621 | 0); | |
5622 | ||
444abaca | 5623 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
d471ea57 | 5624 | "Z4", "access-watchpoint", |
444abaca DJ |
5625 | set_remote_protocol_packet_cmd, |
5626 | show_remote_protocol_packet_cmd, | |
d471ea57 AC |
5627 | &remote_set_cmdlist, &remote_show_cmdlist, |
5628 | 0); | |
5629 | ||
444abaca | 5630 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qPart_auxv], |
802188a7 | 5631 | "qPart_auxv", "read-aux-vector", |
444abaca DJ |
5632 | set_remote_protocol_packet_cmd, |
5633 | show_remote_protocol_packet_cmd, | |
802188a7 RM |
5634 | &remote_set_cmdlist, &remote_show_cmdlist, |
5635 | 0); | |
5636 | ||
444abaca | 5637 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 5638 | "qGetTLSAddr", "get-thread-local-storage-address", |
444abaca DJ |
5639 | set_remote_protocol_packet_cmd, |
5640 | show_remote_protocol_packet_cmd, | |
38691318 KB |
5641 | &remote_set_cmdlist, &remote_show_cmdlist, |
5642 | 0); | |
5643 | ||
37a105a1 DJ |
5644 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
5645 | Z sub-packet has its own set and show commands, but users may | |
5646 | have sets to this variable in their .gdbinit files (or in their | |
5647 | documentation). */ | |
e9e68a56 | 5648 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c AC |
5649 | &remote_Z_packet_detect, _("\ |
5650 | Set use of remote protocol `Z' packets"), _("\ | |
5651 | Show use of remote protocol `Z' packets "), _("\ | |
3b64bf98 | 5652 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 5653 | packets."), |
e9e68a56 | 5654 | set_remote_protocol_Z_packet_cmd, |
2c5b56ce | 5655 | show_remote_protocol_Z_packet_cmd, /* FIXME: i18n: Use of remote protocol `Z' packets is %s. */ |
e9e68a56 | 5656 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 CV |
5657 | |
5658 | /* Eventually initialize fileio. See fileio.c */ | |
5659 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
c906108c | 5660 | } |